1 // SPDX-License-Identifier: GPL-2.0-only 2 /* 3 * This is the new netlink-based wireless configuration interface. 4 * 5 * Copyright 2006-2010 Johannes Berg <johannes@sipsolutions.net> 6 * Copyright 2013-2014 Intel Mobile Communications GmbH 7 * Copyright 2015-2017 Intel Deutschland GmbH 8 * Copyright (C) 2018-2025 Intel Corporation 9 */ 10 11 #include <linux/if.h> 12 #include <linux/module.h> 13 #include <linux/err.h> 14 #include <linux/slab.h> 15 #include <linux/list.h> 16 #include <linux/if_ether.h> 17 #include <linux/ieee80211.h> 18 #include <linux/nl80211.h> 19 #include <linux/rtnetlink.h> 20 #include <linux/netlink.h> 21 #include <linux/nospec.h> 22 #include <linux/etherdevice.h> 23 #include <linux/if_vlan.h> 24 #include <net/net_namespace.h> 25 #include <net/genetlink.h> 26 #include <net/cfg80211.h> 27 #include <net/sock.h> 28 #include <net/inet_connection_sock.h> 29 #include "core.h" 30 #include "nl80211.h" 31 #include "reg.h" 32 #include "rdev-ops.h" 33 34 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev, 35 struct genl_info *info, 36 struct cfg80211_crypto_settings *settings, 37 int cipher_limit); 38 39 /* the netlink family */ 40 static struct genl_family nl80211_fam; 41 42 /* multicast groups */ 43 enum nl80211_multicast_groups { 44 NL80211_MCGRP_CONFIG, 45 NL80211_MCGRP_SCAN, 46 NL80211_MCGRP_REGULATORY, 47 NL80211_MCGRP_MLME, 48 NL80211_MCGRP_VENDOR, 49 NL80211_MCGRP_NAN, 50 NL80211_MCGRP_TESTMODE /* keep last - ifdef! */ 51 }; 52 53 static const struct genl_multicast_group nl80211_mcgrps[] = { 54 [NL80211_MCGRP_CONFIG] = { .name = NL80211_MULTICAST_GROUP_CONFIG }, 55 [NL80211_MCGRP_SCAN] = { .name = NL80211_MULTICAST_GROUP_SCAN }, 56 [NL80211_MCGRP_REGULATORY] = { .name = NL80211_MULTICAST_GROUP_REG }, 57 [NL80211_MCGRP_MLME] = { .name = NL80211_MULTICAST_GROUP_MLME }, 58 [NL80211_MCGRP_VENDOR] = { .name = NL80211_MULTICAST_GROUP_VENDOR }, 59 [NL80211_MCGRP_NAN] = { .name = NL80211_MULTICAST_GROUP_NAN }, 60 #ifdef CONFIG_NL80211_TESTMODE 61 [NL80211_MCGRP_TESTMODE] = { .name = NL80211_MULTICAST_GROUP_TESTMODE } 62 #endif 63 }; 64 65 /* returns ERR_PTR values */ 66 static struct wireless_dev * 67 __cfg80211_wdev_from_attrs(struct cfg80211_registered_device *rdev, 68 struct net *netns, struct nlattr **attrs) 69 { 70 struct wireless_dev *result = NULL; 71 bool have_ifidx = attrs[NL80211_ATTR_IFINDEX]; 72 bool have_wdev_id = attrs[NL80211_ATTR_WDEV]; 73 u64 wdev_id = 0; 74 int wiphy_idx = -1; 75 int ifidx = -1; 76 77 if (!have_ifidx && !have_wdev_id) 78 return ERR_PTR(-EINVAL); 79 80 if (have_ifidx) 81 ifidx = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]); 82 if (have_wdev_id) { 83 wdev_id = nla_get_u64(attrs[NL80211_ATTR_WDEV]); 84 wiphy_idx = wdev_id >> 32; 85 } 86 87 if (rdev) { 88 struct wireless_dev *wdev; 89 90 lockdep_assert_held(&rdev->wiphy.mtx); 91 92 list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) { 93 if (have_ifidx && wdev->netdev && 94 wdev->netdev->ifindex == ifidx) { 95 result = wdev; 96 break; 97 } 98 if (have_wdev_id && wdev->identifier == (u32)wdev_id) { 99 result = wdev; 100 break; 101 } 102 } 103 104 return result ?: ERR_PTR(-ENODEV); 105 } 106 107 ASSERT_RTNL(); 108 109 for_each_rdev(rdev) { 110 struct wireless_dev *wdev; 111 112 if (wiphy_net(&rdev->wiphy) != netns) 113 continue; 114 115 if (have_wdev_id && rdev->wiphy_idx != wiphy_idx) 116 continue; 117 118 list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) { 119 if (have_ifidx && wdev->netdev && 120 wdev->netdev->ifindex == ifidx) { 121 result = wdev; 122 break; 123 } 124 if (have_wdev_id && wdev->identifier == (u32)wdev_id) { 125 result = wdev; 126 break; 127 } 128 } 129 130 if (result) 131 break; 132 } 133 134 if (result) 135 return result; 136 return ERR_PTR(-ENODEV); 137 } 138 139 static struct cfg80211_registered_device * 140 __cfg80211_rdev_from_attrs(struct net *netns, struct nlattr **attrs) 141 { 142 struct cfg80211_registered_device *rdev = NULL, *tmp; 143 struct net_device *netdev; 144 145 ASSERT_RTNL(); 146 147 if (!attrs[NL80211_ATTR_WIPHY] && 148 !attrs[NL80211_ATTR_IFINDEX] && 149 !attrs[NL80211_ATTR_WDEV]) 150 return ERR_PTR(-EINVAL); 151 152 if (attrs[NL80211_ATTR_WIPHY]) 153 rdev = cfg80211_rdev_by_wiphy_idx( 154 nla_get_u32(attrs[NL80211_ATTR_WIPHY])); 155 156 if (attrs[NL80211_ATTR_WDEV]) { 157 u64 wdev_id = nla_get_u64(attrs[NL80211_ATTR_WDEV]); 158 struct wireless_dev *wdev; 159 bool found = false; 160 161 tmp = cfg80211_rdev_by_wiphy_idx(wdev_id >> 32); 162 if (tmp) { 163 /* make sure wdev exists */ 164 list_for_each_entry(wdev, &tmp->wiphy.wdev_list, list) { 165 if (wdev->identifier != (u32)wdev_id) 166 continue; 167 found = true; 168 break; 169 } 170 171 if (!found) 172 tmp = NULL; 173 174 if (rdev && tmp != rdev) 175 return ERR_PTR(-EINVAL); 176 rdev = tmp; 177 } 178 } 179 180 if (attrs[NL80211_ATTR_IFINDEX]) { 181 int ifindex = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]); 182 183 netdev = __dev_get_by_index(netns, ifindex); 184 if (netdev) { 185 if (netdev->ieee80211_ptr) 186 tmp = wiphy_to_rdev( 187 netdev->ieee80211_ptr->wiphy); 188 else 189 tmp = NULL; 190 191 /* not wireless device -- return error */ 192 if (!tmp) 193 return ERR_PTR(-EINVAL); 194 195 /* mismatch -- return error */ 196 if (rdev && tmp != rdev) 197 return ERR_PTR(-EINVAL); 198 199 rdev = tmp; 200 } 201 } 202 203 if (!rdev) 204 return ERR_PTR(-ENODEV); 205 206 if (netns != wiphy_net(&rdev->wiphy)) 207 return ERR_PTR(-ENODEV); 208 209 return rdev; 210 } 211 212 /* 213 * This function returns a pointer to the driver 214 * that the genl_info item that is passed refers to. 215 * 216 * The result of this can be a PTR_ERR and hence must 217 * be checked with IS_ERR() for errors. 218 */ 219 static struct cfg80211_registered_device * 220 cfg80211_get_dev_from_info(struct net *netns, struct genl_info *info) 221 { 222 return __cfg80211_rdev_from_attrs(netns, info->attrs); 223 } 224 225 static int validate_beacon_head(const struct nlattr *attr, 226 struct netlink_ext_ack *extack) 227 { 228 const u8 *data = nla_data(attr); 229 unsigned int len = nla_len(attr); 230 const struct element *elem; 231 const struct ieee80211_mgmt *mgmt = (void *)data; 232 const struct ieee80211_ext *ext; 233 unsigned int fixedlen, hdrlen; 234 bool s1g_bcn; 235 236 if (len < offsetofend(typeof(*mgmt), frame_control)) 237 goto err; 238 239 s1g_bcn = ieee80211_is_s1g_beacon(mgmt->frame_control); 240 if (s1g_bcn) { 241 ext = (struct ieee80211_ext *)mgmt; 242 fixedlen = 243 offsetof(struct ieee80211_ext, u.s1g_beacon.variable) + 244 ieee80211_s1g_optional_len(ext->frame_control); 245 hdrlen = offsetof(struct ieee80211_ext, u.s1g_beacon); 246 } else { 247 fixedlen = offsetof(struct ieee80211_mgmt, 248 u.beacon.variable); 249 hdrlen = offsetof(struct ieee80211_mgmt, u.beacon); 250 } 251 252 if (len < fixedlen) 253 goto err; 254 255 if (ieee80211_hdrlen(mgmt->frame_control) != hdrlen) 256 goto err; 257 258 data += fixedlen; 259 len -= fixedlen; 260 261 for_each_element(elem, data, len) { 262 /* nothing */ 263 } 264 265 if (for_each_element_completed(elem, data, len)) 266 return 0; 267 268 err: 269 NL_SET_ERR_MSG_ATTR(extack, attr, "malformed beacon head"); 270 return -EINVAL; 271 } 272 273 static int validate_ie_attr(const struct nlattr *attr, 274 struct netlink_ext_ack *extack) 275 { 276 const u8 *data = nla_data(attr); 277 unsigned int len = nla_len(attr); 278 const struct element *elem; 279 280 for_each_element(elem, data, len) { 281 /* nothing */ 282 } 283 284 if (for_each_element_completed(elem, data, len)) 285 return 0; 286 287 NL_SET_ERR_MSG_ATTR(extack, attr, "malformed information elements"); 288 return -EINVAL; 289 } 290 291 static int validate_he_capa(const struct nlattr *attr, 292 struct netlink_ext_ack *extack) 293 { 294 if (!ieee80211_he_capa_size_ok(nla_data(attr), nla_len(attr))) 295 return -EINVAL; 296 297 return 0; 298 } 299 300 static int validate_supported_selectors(const struct nlattr *attr, 301 struct netlink_ext_ack *extack) 302 { 303 const u8 *supported_selectors = nla_data(attr); 304 u8 supported_selectors_len = nla_len(attr); 305 306 /* The top bit must not be set as it is not part of the selector */ 307 for (int i = 0; i < supported_selectors_len; i++) { 308 if (supported_selectors[i] & 0x80) 309 return -EINVAL; 310 } 311 312 return 0; 313 } 314 315 static int validate_nan_cluster_id(const struct nlattr *attr, 316 struct netlink_ext_ack *extack) 317 { 318 const u8 *data = nla_data(attr); 319 unsigned int len = nla_len(attr); 320 static const u8 cluster_id_prefix[4] = {0x50, 0x6f, 0x9a, 0x1}; 321 322 if (len != ETH_ALEN) { 323 NL_SET_ERR_MSG_ATTR(extack, attr, "bad cluster id length"); 324 return -EINVAL; 325 } 326 327 if (memcmp(data, cluster_id_prefix, sizeof(cluster_id_prefix))) { 328 NL_SET_ERR_MSG_ATTR(extack, attr, "invalid cluster id prefix"); 329 return -EINVAL; 330 } 331 332 return 0; 333 } 334 335 /* policy for the attributes */ 336 static const struct nla_policy nl80211_policy[NUM_NL80211_ATTR]; 337 338 static const struct nla_policy 339 nl80211_ftm_responder_policy[NL80211_FTM_RESP_ATTR_MAX + 1] = { 340 [NL80211_FTM_RESP_ATTR_ENABLED] = { .type = NLA_FLAG, }, 341 [NL80211_FTM_RESP_ATTR_LCI] = { .type = NLA_BINARY, 342 .len = U8_MAX }, 343 [NL80211_FTM_RESP_ATTR_CIVICLOC] = { .type = NLA_BINARY, 344 .len = U8_MAX }, 345 }; 346 347 static const struct nla_policy 348 nl80211_pmsr_ftm_req_attr_policy[NL80211_PMSR_FTM_REQ_ATTR_MAX + 1] = { 349 [NL80211_PMSR_FTM_REQ_ATTR_ASAP] = { .type = NLA_FLAG }, 350 [NL80211_PMSR_FTM_REQ_ATTR_PREAMBLE] = { .type = NLA_U32 }, 351 [NL80211_PMSR_FTM_REQ_ATTR_NUM_BURSTS_EXP] = 352 NLA_POLICY_MAX(NLA_U8, 15), 353 [NL80211_PMSR_FTM_REQ_ATTR_BURST_PERIOD] = { .type = NLA_U16 }, 354 [NL80211_PMSR_FTM_REQ_ATTR_BURST_DURATION] = 355 NLA_POLICY_MAX(NLA_U8, 15), 356 [NL80211_PMSR_FTM_REQ_ATTR_FTMS_PER_BURST] = { .type = NLA_U8 }, 357 [NL80211_PMSR_FTM_REQ_ATTR_NUM_FTMR_RETRIES] = { .type = NLA_U8 }, 358 [NL80211_PMSR_FTM_REQ_ATTR_REQUEST_LCI] = { .type = NLA_FLAG }, 359 [NL80211_PMSR_FTM_REQ_ATTR_REQUEST_CIVICLOC] = { .type = NLA_FLAG }, 360 [NL80211_PMSR_FTM_REQ_ATTR_TRIGGER_BASED] = { .type = NLA_FLAG }, 361 [NL80211_PMSR_FTM_REQ_ATTR_NON_TRIGGER_BASED] = { .type = NLA_FLAG }, 362 [NL80211_PMSR_FTM_REQ_ATTR_LMR_FEEDBACK] = { .type = NLA_FLAG }, 363 [NL80211_PMSR_FTM_REQ_ATTR_BSS_COLOR] = { .type = NLA_U8 }, 364 }; 365 366 static const struct nla_policy 367 nl80211_pmsr_req_data_policy[NL80211_PMSR_TYPE_MAX + 1] = { 368 [NL80211_PMSR_TYPE_FTM] = 369 NLA_POLICY_NESTED(nl80211_pmsr_ftm_req_attr_policy), 370 }; 371 372 static const struct nla_policy 373 nl80211_pmsr_req_attr_policy[NL80211_PMSR_REQ_ATTR_MAX + 1] = { 374 [NL80211_PMSR_REQ_ATTR_DATA] = 375 NLA_POLICY_NESTED(nl80211_pmsr_req_data_policy), 376 [NL80211_PMSR_REQ_ATTR_GET_AP_TSF] = { .type = NLA_FLAG }, 377 }; 378 379 static const struct nla_policy 380 nl80211_pmsr_peer_attr_policy[NL80211_PMSR_PEER_ATTR_MAX + 1] = { 381 [NL80211_PMSR_PEER_ATTR_ADDR] = NLA_POLICY_ETH_ADDR, 382 [NL80211_PMSR_PEER_ATTR_CHAN] = NLA_POLICY_NESTED(nl80211_policy), 383 [NL80211_PMSR_PEER_ATTR_REQ] = 384 NLA_POLICY_NESTED(nl80211_pmsr_req_attr_policy), 385 [NL80211_PMSR_PEER_ATTR_RESP] = { .type = NLA_REJECT }, 386 }; 387 388 static const struct nla_policy 389 nl80211_pmsr_attr_policy[NL80211_PMSR_ATTR_MAX + 1] = { 390 [NL80211_PMSR_ATTR_MAX_PEERS] = { .type = NLA_REJECT }, 391 [NL80211_PMSR_ATTR_REPORT_AP_TSF] = { .type = NLA_REJECT }, 392 [NL80211_PMSR_ATTR_RANDOMIZE_MAC_ADDR] = { .type = NLA_REJECT }, 393 [NL80211_PMSR_ATTR_TYPE_CAPA] = { .type = NLA_REJECT }, 394 [NL80211_PMSR_ATTR_PEERS] = 395 NLA_POLICY_NESTED_ARRAY(nl80211_pmsr_peer_attr_policy), 396 }; 397 398 static const struct nla_policy 399 he_obss_pd_policy[NL80211_HE_OBSS_PD_ATTR_MAX + 1] = { 400 [NL80211_HE_OBSS_PD_ATTR_MIN_OFFSET] = 401 NLA_POLICY_RANGE(NLA_U8, 1, 20), 402 [NL80211_HE_OBSS_PD_ATTR_MAX_OFFSET] = 403 NLA_POLICY_RANGE(NLA_U8, 1, 20), 404 [NL80211_HE_OBSS_PD_ATTR_NON_SRG_MAX_OFFSET] = 405 NLA_POLICY_RANGE(NLA_U8, 1, 20), 406 [NL80211_HE_OBSS_PD_ATTR_BSS_COLOR_BITMAP] = 407 NLA_POLICY_EXACT_LEN(8), 408 [NL80211_HE_OBSS_PD_ATTR_PARTIAL_BSSID_BITMAP] = 409 NLA_POLICY_EXACT_LEN(8), 410 [NL80211_HE_OBSS_PD_ATTR_SR_CTRL] = { .type = NLA_U8 }, 411 }; 412 413 static const struct nla_policy 414 he_bss_color_policy[NL80211_HE_BSS_COLOR_ATTR_MAX + 1] = { 415 [NL80211_HE_BSS_COLOR_ATTR_COLOR] = NLA_POLICY_RANGE(NLA_U8, 1, 63), 416 [NL80211_HE_BSS_COLOR_ATTR_DISABLED] = { .type = NLA_FLAG }, 417 [NL80211_HE_BSS_COLOR_ATTR_PARTIAL] = { .type = NLA_FLAG }, 418 }; 419 420 static const struct nla_policy nl80211_txattr_policy[NL80211_TXRATE_MAX + 1] = { 421 [NL80211_TXRATE_LEGACY] = { .type = NLA_BINARY, 422 .len = NL80211_MAX_SUPP_RATES }, 423 [NL80211_TXRATE_HT] = { .type = NLA_BINARY, 424 .len = NL80211_MAX_SUPP_HT_RATES }, 425 [NL80211_TXRATE_VHT] = NLA_POLICY_EXACT_LEN_WARN(sizeof(struct nl80211_txrate_vht)), 426 [NL80211_TXRATE_GI] = { .type = NLA_U8 }, 427 [NL80211_TXRATE_HE] = NLA_POLICY_EXACT_LEN(sizeof(struct nl80211_txrate_he)), 428 [NL80211_TXRATE_HE_GI] = NLA_POLICY_RANGE(NLA_U8, 429 NL80211_RATE_INFO_HE_GI_0_8, 430 NL80211_RATE_INFO_HE_GI_3_2), 431 [NL80211_TXRATE_HE_LTF] = NLA_POLICY_RANGE(NLA_U8, 432 NL80211_RATE_INFO_HE_1XLTF, 433 NL80211_RATE_INFO_HE_4XLTF), 434 [NL80211_TXRATE_EHT] = NLA_POLICY_EXACT_LEN(sizeof(struct nl80211_txrate_eht)), 435 [NL80211_TXRATE_EHT_GI] = NLA_POLICY_RANGE(NLA_U8, 436 NL80211_RATE_INFO_EHT_GI_0_8, 437 NL80211_RATE_INFO_EHT_GI_3_2), 438 [NL80211_TXRATE_EHT_LTF] = NLA_POLICY_RANGE(NLA_U8, 439 NL80211_RATE_INFO_EHT_1XLTF, 440 NL80211_RATE_INFO_EHT_8XLTF), 441 442 }; 443 444 static const struct nla_policy 445 nl80211_tid_config_attr_policy[NL80211_TID_CONFIG_ATTR_MAX + 1] = { 446 [NL80211_TID_CONFIG_ATTR_VIF_SUPP] = { .type = NLA_U64 }, 447 [NL80211_TID_CONFIG_ATTR_PEER_SUPP] = { .type = NLA_U64 }, 448 [NL80211_TID_CONFIG_ATTR_OVERRIDE] = { .type = NLA_FLAG }, 449 [NL80211_TID_CONFIG_ATTR_TIDS] = NLA_POLICY_RANGE(NLA_U16, 1, 0xff), 450 [NL80211_TID_CONFIG_ATTR_NOACK] = 451 NLA_POLICY_MAX(NLA_U8, NL80211_TID_CONFIG_DISABLE), 452 [NL80211_TID_CONFIG_ATTR_RETRY_SHORT] = NLA_POLICY_MIN(NLA_U8, 1), 453 [NL80211_TID_CONFIG_ATTR_RETRY_LONG] = NLA_POLICY_MIN(NLA_U8, 1), 454 [NL80211_TID_CONFIG_ATTR_AMPDU_CTRL] = 455 NLA_POLICY_MAX(NLA_U8, NL80211_TID_CONFIG_DISABLE), 456 [NL80211_TID_CONFIG_ATTR_RTSCTS_CTRL] = 457 NLA_POLICY_MAX(NLA_U8, NL80211_TID_CONFIG_DISABLE), 458 [NL80211_TID_CONFIG_ATTR_AMSDU_CTRL] = 459 NLA_POLICY_MAX(NLA_U8, NL80211_TID_CONFIG_DISABLE), 460 [NL80211_TID_CONFIG_ATTR_TX_RATE_TYPE] = 461 NLA_POLICY_MAX(NLA_U8, NL80211_TX_RATE_FIXED), 462 [NL80211_TID_CONFIG_ATTR_TX_RATE] = 463 NLA_POLICY_NESTED(nl80211_txattr_policy), 464 }; 465 466 static const struct nla_policy 467 nl80211_fils_discovery_policy[NL80211_FILS_DISCOVERY_ATTR_MAX + 1] = { 468 [NL80211_FILS_DISCOVERY_ATTR_INT_MIN] = NLA_POLICY_MAX(NLA_U32, 10000), 469 [NL80211_FILS_DISCOVERY_ATTR_INT_MAX] = NLA_POLICY_MAX(NLA_U32, 10000), 470 [NL80211_FILS_DISCOVERY_ATTR_TMPL] = 471 NLA_POLICY_RANGE(NLA_BINARY, 472 NL80211_FILS_DISCOVERY_TMPL_MIN_LEN, 473 IEEE80211_MAX_DATA_LEN), 474 }; 475 476 static const struct nla_policy 477 nl80211_unsol_bcast_probe_resp_policy[NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_MAX + 1] = { 478 [NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_INT] = NLA_POLICY_MAX(NLA_U32, 20), 479 [NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_TMPL] = { .type = NLA_BINARY, 480 .len = IEEE80211_MAX_DATA_LEN } 481 }; 482 483 static const struct nla_policy 484 sar_specs_policy[NL80211_SAR_ATTR_SPECS_MAX + 1] = { 485 [NL80211_SAR_ATTR_SPECS_POWER] = { .type = NLA_S32 }, 486 [NL80211_SAR_ATTR_SPECS_RANGE_INDEX] = {.type = NLA_U32 }, 487 }; 488 489 static const struct nla_policy 490 sar_policy[NL80211_SAR_ATTR_MAX + 1] = { 491 [NL80211_SAR_ATTR_TYPE] = NLA_POLICY_MAX(NLA_U32, NUM_NL80211_SAR_TYPE), 492 [NL80211_SAR_ATTR_SPECS] = NLA_POLICY_NESTED_ARRAY(sar_specs_policy), 493 }; 494 495 static const struct nla_policy 496 nl80211_mbssid_config_policy[NL80211_MBSSID_CONFIG_ATTR_MAX + 1] = { 497 [NL80211_MBSSID_CONFIG_ATTR_MAX_INTERFACES] = NLA_POLICY_MIN(NLA_U8, 2), 498 [NL80211_MBSSID_CONFIG_ATTR_MAX_EMA_PROFILE_PERIODICITY] = 499 NLA_POLICY_MIN(NLA_U8, 1), 500 [NL80211_MBSSID_CONFIG_ATTR_INDEX] = { .type = NLA_U8 }, 501 [NL80211_MBSSID_CONFIG_ATTR_TX_IFINDEX] = { .type = NLA_U32 }, 502 [NL80211_MBSSID_CONFIG_ATTR_EMA] = { .type = NLA_FLAG }, 503 [NL80211_MBSSID_CONFIG_ATTR_TX_LINK_ID] = 504 NLA_POLICY_MAX(NLA_U8, IEEE80211_MLD_MAX_NUM_LINKS), 505 }; 506 507 static const struct nla_policy 508 nl80211_sta_wme_policy[NL80211_STA_WME_MAX + 1] = { 509 [NL80211_STA_WME_UAPSD_QUEUES] = { .type = NLA_U8 }, 510 [NL80211_STA_WME_MAX_SP] = { .type = NLA_U8 }, 511 }; 512 513 static const struct nla_policy 514 nl80211_s1g_short_beacon[NL80211_S1G_SHORT_BEACON_ATTR_MAX + 1] = { 515 [NL80211_S1G_SHORT_BEACON_ATTR_HEAD] = 516 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_beacon_head, 517 IEEE80211_MAX_DATA_LEN), 518 [NL80211_S1G_SHORT_BEACON_ATTR_TAIL] = 519 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_ie_attr, 520 IEEE80211_MAX_DATA_LEN), 521 }; 522 523 static const struct nla_policy 524 nl80211_nan_band_conf_policy[NL80211_NAN_BAND_CONF_ATTR_MAX + 1] = { 525 [NL80211_NAN_BAND_CONF_BAND] = NLA_POLICY_MAX(NLA_U8, 526 NUM_NL80211_BANDS - 1), 527 [NL80211_NAN_BAND_CONF_FREQ] = { .type = NLA_U16 }, 528 [NL80211_NAN_BAND_CONF_RSSI_CLOSE] = NLA_POLICY_MIN(NLA_S8, -59), 529 [NL80211_NAN_BAND_CONF_RSSI_MIDDLE] = NLA_POLICY_MIN(NLA_S8, -74), 530 [NL80211_NAN_BAND_CONF_WAKE_DW] = NLA_POLICY_MAX(NLA_U8, 5), 531 [NL80211_NAN_BAND_CONF_DISABLE_SCAN] = { .type = NLA_FLAG }, 532 }; 533 534 static const struct nla_policy 535 nl80211_nan_conf_policy[NL80211_NAN_CONF_ATTR_MAX + 1] = { 536 [NL80211_NAN_CONF_CLUSTER_ID] = 537 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_nan_cluster_id, 538 ETH_ALEN), 539 [NL80211_NAN_CONF_EXTRA_ATTRS] = { .type = NLA_BINARY, 540 .len = IEEE80211_MAX_DATA_LEN}, 541 [NL80211_NAN_CONF_VENDOR_ELEMS] = 542 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_ie_attr, 543 IEEE80211_MAX_DATA_LEN), 544 [NL80211_NAN_CONF_BAND_CONFIGS] = 545 NLA_POLICY_NESTED_ARRAY(nl80211_nan_band_conf_policy), 546 [NL80211_NAN_CONF_SCAN_PERIOD] = { .type = NLA_U16 }, 547 [NL80211_NAN_CONF_SCAN_DWELL_TIME] = NLA_POLICY_RANGE(NLA_U16, 50, 512), 548 [NL80211_NAN_CONF_DISCOVERY_BEACON_INTERVAL] = 549 NLA_POLICY_RANGE(NLA_U8, 50, 200), 550 [NL80211_NAN_CONF_NOTIFY_DW] = { .type = NLA_FLAG }, 551 }; 552 553 static const struct netlink_range_validation nl80211_punct_bitmap_range = { 554 .min = 0, 555 .max = 0xffff, 556 }; 557 558 static const struct netlink_range_validation q_range = { 559 .max = INT_MAX, 560 }; 561 562 static const struct nla_policy nl80211_policy[NUM_NL80211_ATTR] = { 563 [0] = { .strict_start_type = NL80211_ATTR_HE_OBSS_PD }, 564 [NL80211_ATTR_WIPHY] = { .type = NLA_U32 }, 565 [NL80211_ATTR_WIPHY_NAME] = { .type = NLA_NUL_STRING, 566 .len = 20-1 }, 567 [NL80211_ATTR_WIPHY_TXQ_PARAMS] = { .type = NLA_NESTED }, 568 569 [NL80211_ATTR_WIPHY_FREQ] = { .type = NLA_U32 }, 570 [NL80211_ATTR_WIPHY_CHANNEL_TYPE] = { .type = NLA_U32 }, 571 [NL80211_ATTR_WIPHY_EDMG_CHANNELS] = NLA_POLICY_RANGE(NLA_U8, 572 NL80211_EDMG_CHANNELS_MIN, 573 NL80211_EDMG_CHANNELS_MAX), 574 [NL80211_ATTR_WIPHY_EDMG_BW_CONFIG] = NLA_POLICY_RANGE(NLA_U8, 575 NL80211_EDMG_BW_CONFIG_MIN, 576 NL80211_EDMG_BW_CONFIG_MAX), 577 578 [NL80211_ATTR_CHANNEL_WIDTH] = { .type = NLA_U32 }, 579 [NL80211_ATTR_CENTER_FREQ1] = { .type = NLA_U32 }, 580 [NL80211_ATTR_CENTER_FREQ1_OFFSET] = NLA_POLICY_RANGE(NLA_U32, 0, 999), 581 [NL80211_ATTR_CENTER_FREQ2] = { .type = NLA_U32 }, 582 583 [NL80211_ATTR_WIPHY_RETRY_SHORT] = NLA_POLICY_MIN(NLA_U8, 1), 584 [NL80211_ATTR_WIPHY_RETRY_LONG] = NLA_POLICY_MIN(NLA_U8, 1), 585 [NL80211_ATTR_WIPHY_FRAG_THRESHOLD] = { .type = NLA_U32 }, 586 [NL80211_ATTR_WIPHY_RTS_THRESHOLD] = { .type = NLA_U32 }, 587 [NL80211_ATTR_WIPHY_COVERAGE_CLASS] = { .type = NLA_U8 }, 588 [NL80211_ATTR_WIPHY_DYN_ACK] = { .type = NLA_FLAG }, 589 590 [NL80211_ATTR_IFTYPE] = NLA_POLICY_MAX(NLA_U32, NL80211_IFTYPE_MAX), 591 [NL80211_ATTR_IFINDEX] = { .type = NLA_U32 }, 592 [NL80211_ATTR_IFNAME] = { .type = NLA_NUL_STRING, .len = IFNAMSIZ-1 }, 593 594 [NL80211_ATTR_MAC] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN), 595 [NL80211_ATTR_PREV_BSSID] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN), 596 597 [NL80211_ATTR_KEY] = { .type = NLA_NESTED, }, 598 [NL80211_ATTR_KEY_DATA] = { .type = NLA_BINARY, 599 .len = WLAN_MAX_KEY_LEN }, 600 [NL80211_ATTR_KEY_IDX] = NLA_POLICY_MAX(NLA_U8, 7), 601 [NL80211_ATTR_KEY_CIPHER] = { .type = NLA_U32 }, 602 [NL80211_ATTR_KEY_DEFAULT] = { .type = NLA_FLAG }, 603 [NL80211_ATTR_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 }, 604 [NL80211_ATTR_KEY_TYPE] = 605 NLA_POLICY_MAX(NLA_U32, NUM_NL80211_KEYTYPES), 606 607 [NL80211_ATTR_BEACON_INTERVAL] = { .type = NLA_U32 }, 608 [NL80211_ATTR_DTIM_PERIOD] = { .type = NLA_U32 }, 609 [NL80211_ATTR_BEACON_HEAD] = 610 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_beacon_head, 611 IEEE80211_MAX_DATA_LEN), 612 [NL80211_ATTR_BEACON_TAIL] = 613 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_ie_attr, 614 IEEE80211_MAX_DATA_LEN), 615 [NL80211_ATTR_STA_AID] = 616 NLA_POLICY_RANGE(NLA_U16, 1, IEEE80211_MAX_AID), 617 [NL80211_ATTR_STA_FLAGS] = { .type = NLA_NESTED }, 618 [NL80211_ATTR_STA_LISTEN_INTERVAL] = { .type = NLA_U16 }, 619 [NL80211_ATTR_STA_SUPPORTED_RATES] = { .type = NLA_BINARY, 620 .len = NL80211_MAX_SUPP_RATES }, 621 [NL80211_ATTR_STA_PLINK_ACTION] = 622 NLA_POLICY_MAX(NLA_U8, NUM_NL80211_PLINK_ACTIONS - 1), 623 [NL80211_ATTR_STA_TX_POWER_SETTING] = 624 NLA_POLICY_RANGE(NLA_U8, 625 NL80211_TX_POWER_AUTOMATIC, 626 NL80211_TX_POWER_FIXED), 627 [NL80211_ATTR_STA_TX_POWER] = { .type = NLA_S16 }, 628 [NL80211_ATTR_STA_VLAN] = { .type = NLA_U32 }, 629 [NL80211_ATTR_MNTR_FLAGS] = { /* NLA_NESTED can't be empty */ }, 630 [NL80211_ATTR_MESH_ID] = { .type = NLA_BINARY, 631 .len = IEEE80211_MAX_MESH_ID_LEN }, 632 [NL80211_ATTR_MPATH_NEXT_HOP] = NLA_POLICY_ETH_ADDR_COMPAT, 633 634 /* allow 3 for NUL-termination, we used to declare this NLA_STRING */ 635 [NL80211_ATTR_REG_ALPHA2] = NLA_POLICY_RANGE(NLA_BINARY, 2, 3), 636 [NL80211_ATTR_REG_RULES] = { .type = NLA_NESTED }, 637 638 [NL80211_ATTR_BSS_CTS_PROT] = { .type = NLA_U8 }, 639 [NL80211_ATTR_BSS_SHORT_PREAMBLE] = { .type = NLA_U8 }, 640 [NL80211_ATTR_BSS_SHORT_SLOT_TIME] = { .type = NLA_U8 }, 641 [NL80211_ATTR_BSS_BASIC_RATES] = { .type = NLA_BINARY, 642 .len = NL80211_MAX_SUPP_RATES }, 643 [NL80211_ATTR_BSS_HT_OPMODE] = { .type = NLA_U16 }, 644 645 [NL80211_ATTR_MESH_CONFIG] = { .type = NLA_NESTED }, 646 [NL80211_ATTR_SUPPORT_MESH_AUTH] = { .type = NLA_FLAG }, 647 648 [NL80211_ATTR_HT_CAPABILITY] = NLA_POLICY_EXACT_LEN_WARN(NL80211_HT_CAPABILITY_LEN), 649 650 [NL80211_ATTR_MGMT_SUBTYPE] = { .type = NLA_U8 }, 651 [NL80211_ATTR_IE] = NLA_POLICY_VALIDATE_FN(NLA_BINARY, 652 validate_ie_attr, 653 IEEE80211_MAX_DATA_LEN), 654 [NL80211_ATTR_SCAN_FREQUENCIES] = { .type = NLA_NESTED }, 655 [NL80211_ATTR_SCAN_SSIDS] = { .type = NLA_NESTED }, 656 657 [NL80211_ATTR_SSID] = { .type = NLA_BINARY, 658 .len = IEEE80211_MAX_SSID_LEN }, 659 [NL80211_ATTR_AUTH_TYPE] = { .type = NLA_U32 }, 660 [NL80211_ATTR_REASON_CODE] = { .type = NLA_U16 }, 661 [NL80211_ATTR_FREQ_FIXED] = { .type = NLA_FLAG }, 662 [NL80211_ATTR_TIMED_OUT] = { .type = NLA_FLAG }, 663 [NL80211_ATTR_USE_MFP] = NLA_POLICY_RANGE(NLA_U32, 664 NL80211_MFP_NO, 665 NL80211_MFP_OPTIONAL), 666 [NL80211_ATTR_STA_FLAGS2] = 667 NLA_POLICY_EXACT_LEN_WARN(sizeof(struct nl80211_sta_flag_update)), 668 [NL80211_ATTR_CONTROL_PORT] = { .type = NLA_FLAG }, 669 [NL80211_ATTR_CONTROL_PORT_ETHERTYPE] = { .type = NLA_U16 }, 670 [NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT] = { .type = NLA_FLAG }, 671 [NL80211_ATTR_CONTROL_PORT_OVER_NL80211] = { .type = NLA_FLAG }, 672 [NL80211_ATTR_PRIVACY] = { .type = NLA_FLAG }, 673 [NL80211_ATTR_STATUS_CODE] = { .type = NLA_U16 }, 674 [NL80211_ATTR_CIPHER_SUITE_GROUP] = { .type = NLA_U32 }, 675 [NL80211_ATTR_WPA_VERSIONS] = 676 NLA_POLICY_RANGE(NLA_U32, 0, 677 NL80211_WPA_VERSION_1 | 678 NL80211_WPA_VERSION_2 | 679 NL80211_WPA_VERSION_3), 680 [NL80211_ATTR_PID] = { .type = NLA_U32 }, 681 [NL80211_ATTR_4ADDR] = { .type = NLA_U8 }, 682 [NL80211_ATTR_PMKID] = NLA_POLICY_EXACT_LEN_WARN(WLAN_PMKID_LEN), 683 [NL80211_ATTR_DURATION] = { .type = NLA_U32 }, 684 [NL80211_ATTR_COOKIE] = { .type = NLA_U64 }, 685 [NL80211_ATTR_TX_RATES] = { .type = NLA_NESTED }, 686 [NL80211_ATTR_FRAME] = { .type = NLA_BINARY, 687 .len = IEEE80211_MAX_DATA_LEN }, 688 [NL80211_ATTR_FRAME_MATCH] = { .type = NLA_BINARY, }, 689 [NL80211_ATTR_PS_STATE] = NLA_POLICY_RANGE(NLA_U32, 690 NL80211_PS_DISABLED, 691 NL80211_PS_ENABLED), 692 [NL80211_ATTR_CQM] = { .type = NLA_NESTED, }, 693 [NL80211_ATTR_LOCAL_STATE_CHANGE] = { .type = NLA_FLAG }, 694 [NL80211_ATTR_AP_ISOLATE] = { .type = NLA_U8 }, 695 [NL80211_ATTR_WIPHY_TX_POWER_SETTING] = { .type = NLA_U32 }, 696 [NL80211_ATTR_WIPHY_TX_POWER_LEVEL] = { .type = NLA_U32 }, 697 [NL80211_ATTR_FRAME_TYPE] = { .type = NLA_U16 }, 698 [NL80211_ATTR_WIPHY_ANTENNA_TX] = { .type = NLA_U32 }, 699 [NL80211_ATTR_WIPHY_ANTENNA_RX] = { .type = NLA_U32 }, 700 [NL80211_ATTR_MCAST_RATE] = { .type = NLA_U32 }, 701 [NL80211_ATTR_OFFCHANNEL_TX_OK] = { .type = NLA_FLAG }, 702 [NL80211_ATTR_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED }, 703 [NL80211_ATTR_WOWLAN_TRIGGERS] = { .type = NLA_NESTED }, 704 [NL80211_ATTR_STA_PLINK_STATE] = 705 NLA_POLICY_MAX(NLA_U8, NUM_NL80211_PLINK_STATES - 1), 706 [NL80211_ATTR_MEASUREMENT_DURATION] = { .type = NLA_U16 }, 707 [NL80211_ATTR_MEASUREMENT_DURATION_MANDATORY] = { .type = NLA_FLAG }, 708 [NL80211_ATTR_MESH_PEER_AID] = 709 NLA_POLICY_RANGE(NLA_U16, 1, IEEE80211_MAX_AID), 710 [NL80211_ATTR_SCHED_SCAN_INTERVAL] = { .type = NLA_U32 }, 711 [NL80211_ATTR_REKEY_DATA] = { .type = NLA_NESTED }, 712 [NL80211_ATTR_SCAN_SUPP_RATES] = { .type = NLA_NESTED }, 713 [NL80211_ATTR_HIDDEN_SSID] = 714 NLA_POLICY_RANGE(NLA_U32, 715 NL80211_HIDDEN_SSID_NOT_IN_USE, 716 NL80211_HIDDEN_SSID_ZERO_CONTENTS), 717 [NL80211_ATTR_IE_PROBE_RESP] = 718 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_ie_attr, 719 IEEE80211_MAX_DATA_LEN), 720 [NL80211_ATTR_IE_ASSOC_RESP] = 721 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_ie_attr, 722 IEEE80211_MAX_DATA_LEN), 723 [NL80211_ATTR_ROAM_SUPPORT] = { .type = NLA_FLAG }, 724 [NL80211_ATTR_STA_WME] = NLA_POLICY_NESTED(nl80211_sta_wme_policy), 725 [NL80211_ATTR_SCHED_SCAN_MATCH] = { .type = NLA_NESTED }, 726 [NL80211_ATTR_TX_NO_CCK_RATE] = { .type = NLA_FLAG }, 727 [NL80211_ATTR_TDLS_ACTION] = { .type = NLA_U8 }, 728 [NL80211_ATTR_TDLS_DIALOG_TOKEN] = { .type = NLA_U8 }, 729 [NL80211_ATTR_TDLS_OPERATION] = { .type = NLA_U8 }, 730 [NL80211_ATTR_TDLS_SUPPORT] = { .type = NLA_FLAG }, 731 [NL80211_ATTR_TDLS_EXTERNAL_SETUP] = { .type = NLA_FLAG }, 732 [NL80211_ATTR_TDLS_INITIATOR] = { .type = NLA_FLAG }, 733 [NL80211_ATTR_DONT_WAIT_FOR_ACK] = { .type = NLA_FLAG }, 734 [NL80211_ATTR_PROBE_RESP] = { .type = NLA_BINARY, 735 .len = IEEE80211_MAX_DATA_LEN }, 736 [NL80211_ATTR_DFS_REGION] = { .type = NLA_U8 }, 737 [NL80211_ATTR_DISABLE_HT] = { .type = NLA_FLAG }, 738 [NL80211_ATTR_HT_CAPABILITY_MASK] = { 739 .len = NL80211_HT_CAPABILITY_LEN 740 }, 741 [NL80211_ATTR_NOACK_MAP] = { .type = NLA_U16 }, 742 [NL80211_ATTR_INACTIVITY_TIMEOUT] = { .type = NLA_U16 }, 743 [NL80211_ATTR_BG_SCAN_PERIOD] = { .type = NLA_U16 }, 744 [NL80211_ATTR_WDEV] = { .type = NLA_U64 }, 745 [NL80211_ATTR_USER_REG_HINT_TYPE] = { .type = NLA_U32 }, 746 747 /* need to include at least Auth Transaction and Status Code */ 748 [NL80211_ATTR_AUTH_DATA] = NLA_POLICY_MIN_LEN(4), 749 750 [NL80211_ATTR_VHT_CAPABILITY] = NLA_POLICY_EXACT_LEN_WARN(NL80211_VHT_CAPABILITY_LEN), 751 [NL80211_ATTR_SCAN_FLAGS] = { .type = NLA_U32 }, 752 [NL80211_ATTR_P2P_CTWINDOW] = NLA_POLICY_MAX(NLA_U8, 127), 753 [NL80211_ATTR_P2P_OPPPS] = NLA_POLICY_MAX(NLA_U8, 1), 754 [NL80211_ATTR_LOCAL_MESH_POWER_MODE] = 755 NLA_POLICY_RANGE(NLA_U32, 756 NL80211_MESH_POWER_UNKNOWN + 1, 757 NL80211_MESH_POWER_MAX), 758 [NL80211_ATTR_ACL_POLICY] = {. type = NLA_U32 }, 759 [NL80211_ATTR_MAC_ADDRS] = { .type = NLA_NESTED }, 760 [NL80211_ATTR_STA_CAPABILITY] = { .type = NLA_U16 }, 761 [NL80211_ATTR_STA_EXT_CAPABILITY] = { .type = NLA_BINARY, }, 762 [NL80211_ATTR_SPLIT_WIPHY_DUMP] = { .type = NLA_FLAG, }, 763 [NL80211_ATTR_DISABLE_VHT] = { .type = NLA_FLAG }, 764 [NL80211_ATTR_VHT_CAPABILITY_MASK] = { 765 .len = NL80211_VHT_CAPABILITY_LEN, 766 }, 767 [NL80211_ATTR_MDID] = { .type = NLA_U16 }, 768 [NL80211_ATTR_IE_RIC] = { .type = NLA_BINARY, 769 .len = IEEE80211_MAX_DATA_LEN }, 770 [NL80211_ATTR_CRIT_PROT_ID] = { .type = NLA_U16 }, 771 [NL80211_ATTR_MAX_CRIT_PROT_DURATION] = 772 NLA_POLICY_MAX(NLA_U16, NL80211_CRIT_PROTO_MAX_DURATION), 773 [NL80211_ATTR_PEER_AID] = 774 NLA_POLICY_RANGE(NLA_U16, 1, IEEE80211_MAX_AID), 775 [NL80211_ATTR_CH_SWITCH_COUNT] = { .type = NLA_U32 }, 776 [NL80211_ATTR_CH_SWITCH_BLOCK_TX] = { .type = NLA_FLAG }, 777 [NL80211_ATTR_CSA_IES] = { .type = NLA_NESTED }, 778 [NL80211_ATTR_CNTDWN_OFFS_BEACON] = { .type = NLA_BINARY }, 779 [NL80211_ATTR_CNTDWN_OFFS_PRESP] = { .type = NLA_BINARY }, 780 [NL80211_ATTR_STA_SUPPORTED_CHANNELS] = NLA_POLICY_MIN_LEN(2), 781 /* 782 * The value of the Length field of the Supported Operating 783 * Classes element is between 2 and 253. 784 */ 785 [NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES] = 786 NLA_POLICY_RANGE(NLA_BINARY, 2, 253), 787 [NL80211_ATTR_HANDLE_DFS] = { .type = NLA_FLAG }, 788 [NL80211_ATTR_OPMODE_NOTIF] = { .type = NLA_U8 }, 789 [NL80211_ATTR_VENDOR_ID] = { .type = NLA_U32 }, 790 [NL80211_ATTR_VENDOR_SUBCMD] = { .type = NLA_U32 }, 791 [NL80211_ATTR_VENDOR_DATA] = { .type = NLA_BINARY }, 792 [NL80211_ATTR_QOS_MAP] = NLA_POLICY_RANGE(NLA_BINARY, 793 IEEE80211_QOS_MAP_LEN_MIN, 794 IEEE80211_QOS_MAP_LEN_MAX), 795 [NL80211_ATTR_MAC_HINT] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN), 796 [NL80211_ATTR_WIPHY_FREQ_HINT] = { .type = NLA_U32 }, 797 [NL80211_ATTR_TDLS_PEER_CAPABILITY] = { .type = NLA_U32 }, 798 [NL80211_ATTR_SOCKET_OWNER] = { .type = NLA_FLAG }, 799 [NL80211_ATTR_CSA_C_OFFSETS_TX] = { .type = NLA_BINARY }, 800 [NL80211_ATTR_USE_RRM] = { .type = NLA_FLAG }, 801 [NL80211_ATTR_TSID] = NLA_POLICY_MAX(NLA_U8, IEEE80211_NUM_TIDS - 1), 802 [NL80211_ATTR_USER_PRIO] = 803 NLA_POLICY_MAX(NLA_U8, IEEE80211_NUM_UPS - 1), 804 [NL80211_ATTR_ADMITTED_TIME] = { .type = NLA_U16 }, 805 [NL80211_ATTR_SMPS_MODE] = { .type = NLA_U8 }, 806 [NL80211_ATTR_OPER_CLASS] = { .type = NLA_U8 }, 807 [NL80211_ATTR_MAC_MASK] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN), 808 [NL80211_ATTR_WIPHY_SELF_MANAGED_REG] = { .type = NLA_FLAG }, 809 [NL80211_ATTR_NETNS_FD] = { .type = NLA_U32 }, 810 [NL80211_ATTR_SCHED_SCAN_DELAY] = { .type = NLA_U32 }, 811 [NL80211_ATTR_REG_INDOOR] = { .type = NLA_FLAG }, 812 [NL80211_ATTR_PBSS] = { .type = NLA_FLAG }, 813 [NL80211_ATTR_BSS_SELECT] = { .type = NLA_NESTED }, 814 [NL80211_ATTR_STA_SUPPORT_P2P_PS] = 815 NLA_POLICY_MAX(NLA_U8, NUM_NL80211_P2P_PS_STATUS - 1), 816 [NL80211_ATTR_MU_MIMO_GROUP_DATA] = { 817 .len = VHT_MUMIMO_GROUPS_DATA_LEN 818 }, 819 [NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN), 820 [NL80211_ATTR_NAN_MASTER_PREF] = NLA_POLICY_MIN(NLA_U8, 1), 821 [NL80211_ATTR_BANDS] = { .type = NLA_U32 }, 822 [NL80211_ATTR_NAN_CONFIG] = NLA_POLICY_NESTED(nl80211_nan_conf_policy), 823 [NL80211_ATTR_NAN_FUNC] = { .type = NLA_NESTED }, 824 [NL80211_ATTR_FILS_KEK] = { .type = NLA_BINARY, 825 .len = FILS_MAX_KEK_LEN }, 826 [NL80211_ATTR_FILS_NONCES] = NLA_POLICY_EXACT_LEN_WARN(2 * FILS_NONCE_LEN), 827 [NL80211_ATTR_MULTICAST_TO_UNICAST_ENABLED] = { .type = NLA_FLAG, }, 828 [NL80211_ATTR_BSSID] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN), 829 [NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI] = { .type = NLA_S8 }, 830 [NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST] = { 831 .len = sizeof(struct nl80211_bss_select_rssi_adjust) 832 }, 833 [NL80211_ATTR_TIMEOUT_REASON] = { .type = NLA_U32 }, 834 [NL80211_ATTR_FILS_ERP_USERNAME] = { .type = NLA_BINARY, 835 .len = FILS_ERP_MAX_USERNAME_LEN }, 836 [NL80211_ATTR_FILS_ERP_REALM] = { .type = NLA_BINARY, 837 .len = FILS_ERP_MAX_REALM_LEN }, 838 [NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] = { .type = NLA_U16 }, 839 [NL80211_ATTR_FILS_ERP_RRK] = { .type = NLA_BINARY, 840 .len = FILS_ERP_MAX_RRK_LEN }, 841 [NL80211_ATTR_FILS_CACHE_ID] = NLA_POLICY_EXACT_LEN_WARN(2), 842 [NL80211_ATTR_PMK] = { .type = NLA_BINARY, .len = PMK_MAX_LEN }, 843 [NL80211_ATTR_PMKR0_NAME] = NLA_POLICY_EXACT_LEN(WLAN_PMK_NAME_LEN), 844 [NL80211_ATTR_SCHED_SCAN_MULTI] = { .type = NLA_FLAG }, 845 [NL80211_ATTR_EXTERNAL_AUTH_SUPPORT] = { .type = NLA_FLAG }, 846 847 [NL80211_ATTR_TXQ_LIMIT] = { .type = NLA_U32 }, 848 [NL80211_ATTR_TXQ_MEMORY_LIMIT] = { .type = NLA_U32 }, 849 [NL80211_ATTR_TXQ_QUANTUM] = NLA_POLICY_FULL_RANGE(NLA_U32, &q_range), 850 [NL80211_ATTR_HE_CAPABILITY] = 851 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_he_capa, 852 NL80211_HE_MAX_CAPABILITY_LEN), 853 [NL80211_ATTR_FTM_RESPONDER] = 854 NLA_POLICY_NESTED(nl80211_ftm_responder_policy), 855 [NL80211_ATTR_TIMEOUT] = NLA_POLICY_MIN(NLA_U32, 1), 856 [NL80211_ATTR_PEER_MEASUREMENTS] = 857 NLA_POLICY_NESTED(nl80211_pmsr_attr_policy), 858 [NL80211_ATTR_AIRTIME_WEIGHT] = NLA_POLICY_MIN(NLA_U16, 1), 859 [NL80211_ATTR_SAE_PASSWORD] = { .type = NLA_BINARY, 860 .len = SAE_PASSWORD_MAX_LEN }, 861 [NL80211_ATTR_TWT_RESPONDER] = { .type = NLA_FLAG }, 862 [NL80211_ATTR_HE_OBSS_PD] = NLA_POLICY_NESTED(he_obss_pd_policy), 863 [NL80211_ATTR_VLAN_ID] = NLA_POLICY_RANGE(NLA_U16, 1, VLAN_N_VID - 2), 864 [NL80211_ATTR_HE_BSS_COLOR] = NLA_POLICY_NESTED(he_bss_color_policy), 865 [NL80211_ATTR_TID_CONFIG] = 866 NLA_POLICY_NESTED_ARRAY(nl80211_tid_config_attr_policy), 867 [NL80211_ATTR_CONTROL_PORT_NO_PREAUTH] = { .type = NLA_FLAG }, 868 [NL80211_ATTR_PMK_LIFETIME] = NLA_POLICY_MIN(NLA_U32, 1), 869 [NL80211_ATTR_PMK_REAUTH_THRESHOLD] = NLA_POLICY_RANGE(NLA_U8, 1, 100), 870 [NL80211_ATTR_RECEIVE_MULTICAST] = { .type = NLA_FLAG }, 871 [NL80211_ATTR_WIPHY_FREQ_OFFSET] = NLA_POLICY_RANGE(NLA_U32, 0, 999), 872 [NL80211_ATTR_SCAN_FREQ_KHZ] = { .type = NLA_NESTED }, 873 [NL80211_ATTR_HE_6GHZ_CAPABILITY] = 874 NLA_POLICY_EXACT_LEN(sizeof(struct ieee80211_he_6ghz_capa)), 875 [NL80211_ATTR_FILS_DISCOVERY] = 876 NLA_POLICY_NESTED(nl80211_fils_discovery_policy), 877 [NL80211_ATTR_UNSOL_BCAST_PROBE_RESP] = 878 NLA_POLICY_NESTED(nl80211_unsol_bcast_probe_resp_policy), 879 [NL80211_ATTR_S1G_CAPABILITY] = 880 NLA_POLICY_EXACT_LEN(IEEE80211_S1G_CAPABILITY_LEN), 881 [NL80211_ATTR_S1G_CAPABILITY_MASK] = 882 NLA_POLICY_EXACT_LEN(IEEE80211_S1G_CAPABILITY_LEN), 883 [NL80211_ATTR_SAE_PWE] = 884 NLA_POLICY_RANGE(NLA_U8, NL80211_SAE_PWE_HUNT_AND_PECK, 885 NL80211_SAE_PWE_BOTH), 886 [NL80211_ATTR_RECONNECT_REQUESTED] = { .type = NLA_REJECT }, 887 [NL80211_ATTR_SAR_SPEC] = NLA_POLICY_NESTED(sar_policy), 888 [NL80211_ATTR_DISABLE_HE] = { .type = NLA_FLAG }, 889 [NL80211_ATTR_OBSS_COLOR_BITMAP] = { .type = NLA_U64 }, 890 [NL80211_ATTR_COLOR_CHANGE_COUNT] = { .type = NLA_U8 }, 891 [NL80211_ATTR_COLOR_CHANGE_COLOR] = { .type = NLA_U8 }, 892 [NL80211_ATTR_COLOR_CHANGE_ELEMS] = NLA_POLICY_NESTED(nl80211_policy), 893 [NL80211_ATTR_MBSSID_CONFIG] = 894 NLA_POLICY_NESTED(nl80211_mbssid_config_policy), 895 [NL80211_ATTR_MBSSID_ELEMS] = { .type = NLA_NESTED }, 896 [NL80211_ATTR_RADAR_BACKGROUND] = { .type = NLA_FLAG }, 897 [NL80211_ATTR_AP_SETTINGS_FLAGS] = { .type = NLA_U32 }, 898 [NL80211_ATTR_EHT_CAPABILITY] = 899 NLA_POLICY_RANGE(NLA_BINARY, 900 NL80211_EHT_MIN_CAPABILITY_LEN, 901 NL80211_EHT_MAX_CAPABILITY_LEN), 902 [NL80211_ATTR_DISABLE_EHT] = { .type = NLA_FLAG }, 903 [NL80211_ATTR_MLO_LINKS] = 904 NLA_POLICY_NESTED_ARRAY(nl80211_policy), 905 [NL80211_ATTR_MLO_LINK_ID] = 906 NLA_POLICY_RANGE(NLA_U8, 0, IEEE80211_MLD_MAX_NUM_LINKS - 1), 907 [NL80211_ATTR_MLD_ADDR] = NLA_POLICY_EXACT_LEN(ETH_ALEN), 908 [NL80211_ATTR_MLO_SUPPORT] = { .type = NLA_FLAG }, 909 [NL80211_ATTR_MAX_NUM_AKM_SUITES] = { .type = NLA_REJECT }, 910 [NL80211_ATTR_EML_CAPABILITY] = { .type = NLA_U16 }, 911 [NL80211_ATTR_PUNCT_BITMAP] = 912 NLA_POLICY_FULL_RANGE(NLA_U32, &nl80211_punct_bitmap_range), 913 914 [NL80211_ATTR_MAX_HW_TIMESTAMP_PEERS] = { .type = NLA_U16 }, 915 [NL80211_ATTR_HW_TIMESTAMP_ENABLED] = { .type = NLA_FLAG }, 916 [NL80211_ATTR_EMA_RNR_ELEMS] = { .type = NLA_NESTED }, 917 [NL80211_ATTR_MLO_LINK_DISABLED] = { .type = NLA_FLAG }, 918 [NL80211_ATTR_BSS_DUMP_INCLUDE_USE_DATA] = { .type = NLA_FLAG }, 919 [NL80211_ATTR_MLO_TTLM_DLINK] = NLA_POLICY_EXACT_LEN(sizeof(u16) * 8), 920 [NL80211_ATTR_MLO_TTLM_ULINK] = NLA_POLICY_EXACT_LEN(sizeof(u16) * 8), 921 [NL80211_ATTR_ASSOC_SPP_AMSDU] = { .type = NLA_FLAG }, 922 [NL80211_ATTR_VIF_RADIO_MASK] = { .type = NLA_U32 }, 923 [NL80211_ATTR_SUPPORTED_SELECTORS] = 924 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_supported_selectors, 925 NL80211_MAX_SUPP_SELECTORS), 926 [NL80211_ATTR_MLO_RECONF_REM_LINKS] = { .type = NLA_U16 }, 927 [NL80211_ATTR_EPCS] = { .type = NLA_FLAG }, 928 [NL80211_ATTR_ASSOC_MLD_EXT_CAPA_OPS] = { .type = NLA_U16 }, 929 [NL80211_ATTR_WIPHY_RADIO_INDEX] = { .type = NLA_U8 }, 930 [NL80211_ATTR_S1G_LONG_BEACON_PERIOD] = NLA_POLICY_MIN(NLA_U8, 2), 931 [NL80211_ATTR_S1G_SHORT_BEACON] = 932 NLA_POLICY_NESTED(nl80211_s1g_short_beacon), 933 [NL80211_ATTR_BSS_PARAM] = { .type = NLA_FLAG }, 934 [NL80211_ATTR_S1G_PRIMARY_2MHZ] = { .type = NLA_FLAG }, 935 }; 936 937 /* policy for the key attributes */ 938 static const struct nla_policy nl80211_key_policy[NL80211_KEY_MAX + 1] = { 939 [NL80211_KEY_DATA] = { .type = NLA_BINARY, .len = WLAN_MAX_KEY_LEN }, 940 [NL80211_KEY_IDX] = { .type = NLA_U8 }, 941 [NL80211_KEY_CIPHER] = { .type = NLA_U32 }, 942 [NL80211_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 }, 943 [NL80211_KEY_DEFAULT] = { .type = NLA_FLAG }, 944 [NL80211_KEY_DEFAULT_MGMT] = { .type = NLA_FLAG }, 945 [NL80211_KEY_TYPE] = NLA_POLICY_MAX(NLA_U32, NUM_NL80211_KEYTYPES - 1), 946 [NL80211_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED }, 947 [NL80211_KEY_MODE] = NLA_POLICY_RANGE(NLA_U8, 0, NL80211_KEY_SET_TX), 948 }; 949 950 /* policy for the key default flags */ 951 static const struct nla_policy 952 nl80211_key_default_policy[NUM_NL80211_KEY_DEFAULT_TYPES] = { 953 [NL80211_KEY_DEFAULT_TYPE_UNICAST] = { .type = NLA_FLAG }, 954 [NL80211_KEY_DEFAULT_TYPE_MULTICAST] = { .type = NLA_FLAG }, 955 }; 956 957 #ifdef CONFIG_PM 958 /* policy for WoWLAN attributes */ 959 static const struct nla_policy 960 nl80211_wowlan_policy[NUM_NL80211_WOWLAN_TRIG] = { 961 [NL80211_WOWLAN_TRIG_ANY] = { .type = NLA_FLAG }, 962 [NL80211_WOWLAN_TRIG_DISCONNECT] = { .type = NLA_FLAG }, 963 [NL80211_WOWLAN_TRIG_MAGIC_PKT] = { .type = NLA_FLAG }, 964 [NL80211_WOWLAN_TRIG_PKT_PATTERN] = { .type = NLA_NESTED }, 965 [NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE] = { .type = NLA_FLAG }, 966 [NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST] = { .type = NLA_FLAG }, 967 [NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE] = { .type = NLA_FLAG }, 968 [NL80211_WOWLAN_TRIG_RFKILL_RELEASE] = { .type = NLA_FLAG }, 969 [NL80211_WOWLAN_TRIG_TCP_CONNECTION] = { .type = NLA_NESTED }, 970 [NL80211_WOWLAN_TRIG_NET_DETECT] = { .type = NLA_NESTED }, 971 }; 972 973 static const struct nla_policy 974 nl80211_wowlan_tcp_policy[NUM_NL80211_WOWLAN_TCP] = { 975 [NL80211_WOWLAN_TCP_SRC_IPV4] = { .type = NLA_U32 }, 976 [NL80211_WOWLAN_TCP_DST_IPV4] = { .type = NLA_U32 }, 977 [NL80211_WOWLAN_TCP_DST_MAC] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN), 978 [NL80211_WOWLAN_TCP_SRC_PORT] = { .type = NLA_U16 }, 979 [NL80211_WOWLAN_TCP_DST_PORT] = { .type = NLA_U16 }, 980 [NL80211_WOWLAN_TCP_DATA_PAYLOAD] = NLA_POLICY_MIN_LEN(1), 981 [NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ] = { 982 .len = sizeof(struct nl80211_wowlan_tcp_data_seq) 983 }, 984 [NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN] = { 985 .len = sizeof(struct nl80211_wowlan_tcp_data_token) 986 }, 987 [NL80211_WOWLAN_TCP_DATA_INTERVAL] = { .type = NLA_U32 }, 988 [NL80211_WOWLAN_TCP_WAKE_PAYLOAD] = NLA_POLICY_MIN_LEN(1), 989 [NL80211_WOWLAN_TCP_WAKE_MASK] = NLA_POLICY_MIN_LEN(1), 990 }; 991 #endif /* CONFIG_PM */ 992 993 /* policy for coalesce rule attributes */ 994 static const struct nla_policy 995 nl80211_coalesce_policy[NUM_NL80211_ATTR_COALESCE_RULE] = { 996 [NL80211_ATTR_COALESCE_RULE_DELAY] = { .type = NLA_U32 }, 997 [NL80211_ATTR_COALESCE_RULE_CONDITION] = 998 NLA_POLICY_RANGE(NLA_U32, 999 NL80211_COALESCE_CONDITION_MATCH, 1000 NL80211_COALESCE_CONDITION_NO_MATCH), 1001 [NL80211_ATTR_COALESCE_RULE_PKT_PATTERN] = { .type = NLA_NESTED }, 1002 }; 1003 1004 /* policy for GTK rekey offload attributes */ 1005 static const struct nla_policy 1006 nl80211_rekey_policy[NUM_NL80211_REKEY_DATA] = { 1007 [NL80211_REKEY_DATA_KEK] = { 1008 .type = NLA_BINARY, 1009 .len = NL80211_KEK_EXT_LEN 1010 }, 1011 [NL80211_REKEY_DATA_KCK] = { 1012 .type = NLA_BINARY, 1013 .len = NL80211_KCK_EXT_LEN_32 1014 }, 1015 [NL80211_REKEY_DATA_REPLAY_CTR] = NLA_POLICY_EXACT_LEN(NL80211_REPLAY_CTR_LEN), 1016 [NL80211_REKEY_DATA_AKM] = { .type = NLA_U32 }, 1017 }; 1018 1019 static const struct nla_policy 1020 nl80211_match_policy[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1] = { 1021 [NL80211_SCHED_SCAN_MATCH_ATTR_SSID] = { .type = NLA_BINARY, 1022 .len = IEEE80211_MAX_SSID_LEN }, 1023 [NL80211_SCHED_SCAN_MATCH_ATTR_BSSID] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN), 1024 [NL80211_SCHED_SCAN_MATCH_ATTR_RSSI] = { .type = NLA_U32 }, 1025 }; 1026 1027 static const struct nla_policy 1028 nl80211_plan_policy[NL80211_SCHED_SCAN_PLAN_MAX + 1] = { 1029 [NL80211_SCHED_SCAN_PLAN_INTERVAL] = { .type = NLA_U32 }, 1030 [NL80211_SCHED_SCAN_PLAN_ITERATIONS] = { .type = NLA_U32 }, 1031 }; 1032 1033 static const struct nla_policy 1034 nl80211_bss_select_policy[NL80211_BSS_SELECT_ATTR_MAX + 1] = { 1035 [NL80211_BSS_SELECT_ATTR_RSSI] = { .type = NLA_FLAG }, 1036 [NL80211_BSS_SELECT_ATTR_BAND_PREF] = { .type = NLA_U32 }, 1037 [NL80211_BSS_SELECT_ATTR_RSSI_ADJUST] = { 1038 .len = sizeof(struct nl80211_bss_select_rssi_adjust) 1039 }, 1040 }; 1041 1042 /* policy for NAN function attributes */ 1043 static const struct nla_policy 1044 nl80211_nan_func_policy[NL80211_NAN_FUNC_ATTR_MAX + 1] = { 1045 [NL80211_NAN_FUNC_TYPE] = 1046 NLA_POLICY_MAX(NLA_U8, NL80211_NAN_FUNC_MAX_TYPE), 1047 [NL80211_NAN_FUNC_SERVICE_ID] = { 1048 .len = NL80211_NAN_FUNC_SERVICE_ID_LEN }, 1049 [NL80211_NAN_FUNC_PUBLISH_TYPE] = { .type = NLA_U8 }, 1050 [NL80211_NAN_FUNC_PUBLISH_BCAST] = { .type = NLA_FLAG }, 1051 [NL80211_NAN_FUNC_SUBSCRIBE_ACTIVE] = { .type = NLA_FLAG }, 1052 [NL80211_NAN_FUNC_FOLLOW_UP_ID] = { .type = NLA_U8 }, 1053 [NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID] = { .type = NLA_U8 }, 1054 [NL80211_NAN_FUNC_FOLLOW_UP_DEST] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN), 1055 [NL80211_NAN_FUNC_CLOSE_RANGE] = { .type = NLA_FLAG }, 1056 [NL80211_NAN_FUNC_TTL] = { .type = NLA_U32 }, 1057 [NL80211_NAN_FUNC_SERVICE_INFO] = { .type = NLA_BINARY, 1058 .len = NL80211_NAN_FUNC_SERVICE_SPEC_INFO_MAX_LEN }, 1059 [NL80211_NAN_FUNC_SRF] = { .type = NLA_NESTED }, 1060 [NL80211_NAN_FUNC_RX_MATCH_FILTER] = { .type = NLA_NESTED }, 1061 [NL80211_NAN_FUNC_TX_MATCH_FILTER] = { .type = NLA_NESTED }, 1062 [NL80211_NAN_FUNC_INSTANCE_ID] = { .type = NLA_U8 }, 1063 [NL80211_NAN_FUNC_TERM_REASON] = { .type = NLA_U8 }, 1064 }; 1065 1066 /* policy for Service Response Filter attributes */ 1067 static const struct nla_policy 1068 nl80211_nan_srf_policy[NL80211_NAN_SRF_ATTR_MAX + 1] = { 1069 [NL80211_NAN_SRF_INCLUDE] = { .type = NLA_FLAG }, 1070 [NL80211_NAN_SRF_BF] = { .type = NLA_BINARY, 1071 .len = NL80211_NAN_FUNC_SRF_MAX_LEN }, 1072 [NL80211_NAN_SRF_BF_IDX] = { .type = NLA_U8 }, 1073 [NL80211_NAN_SRF_MAC_ADDRS] = { .type = NLA_NESTED }, 1074 }; 1075 1076 /* policy for packet pattern attributes */ 1077 static const struct nla_policy 1078 nl80211_packet_pattern_policy[MAX_NL80211_PKTPAT + 1] = { 1079 [NL80211_PKTPAT_MASK] = { .type = NLA_BINARY, }, 1080 [NL80211_PKTPAT_PATTERN] = { .type = NLA_BINARY, }, 1081 [NL80211_PKTPAT_OFFSET] = { .type = NLA_U32 }, 1082 }; 1083 1084 static int nl80211_prepare_wdev_dump(struct netlink_callback *cb, 1085 struct cfg80211_registered_device **rdev, 1086 struct wireless_dev **wdev, 1087 struct nlattr **attrbuf) 1088 { 1089 int err; 1090 1091 if (!cb->args[0]) { 1092 struct nlattr **attrbuf_free = NULL; 1093 1094 if (!attrbuf) { 1095 attrbuf = kcalloc(NUM_NL80211_ATTR, sizeof(*attrbuf), 1096 GFP_KERNEL); 1097 if (!attrbuf) 1098 return -ENOMEM; 1099 attrbuf_free = attrbuf; 1100 } 1101 1102 err = nlmsg_parse_deprecated(cb->nlh, 1103 GENL_HDRLEN + nl80211_fam.hdrsize, 1104 attrbuf, nl80211_fam.maxattr, 1105 nl80211_policy, NULL); 1106 if (err) { 1107 kfree(attrbuf_free); 1108 return err; 1109 } 1110 1111 rtnl_lock(); 1112 *wdev = __cfg80211_wdev_from_attrs(NULL, sock_net(cb->skb->sk), 1113 attrbuf); 1114 kfree(attrbuf_free); 1115 if (IS_ERR(*wdev)) { 1116 rtnl_unlock(); 1117 return PTR_ERR(*wdev); 1118 } 1119 *rdev = wiphy_to_rdev((*wdev)->wiphy); 1120 mutex_lock(&(*rdev)->wiphy.mtx); 1121 rtnl_unlock(); 1122 /* 0 is the first index - add 1 to parse only once */ 1123 cb->args[0] = (*rdev)->wiphy_idx + 1; 1124 cb->args[1] = (*wdev)->identifier; 1125 } else { 1126 /* subtract the 1 again here */ 1127 struct wiphy *wiphy; 1128 struct wireless_dev *tmp; 1129 1130 rtnl_lock(); 1131 wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1); 1132 if (!wiphy) { 1133 rtnl_unlock(); 1134 return -ENODEV; 1135 } 1136 *rdev = wiphy_to_rdev(wiphy); 1137 *wdev = NULL; 1138 1139 list_for_each_entry(tmp, &(*rdev)->wiphy.wdev_list, list) { 1140 if (tmp->identifier == cb->args[1]) { 1141 *wdev = tmp; 1142 break; 1143 } 1144 } 1145 1146 if (!*wdev) { 1147 rtnl_unlock(); 1148 return -ENODEV; 1149 } 1150 mutex_lock(&(*rdev)->wiphy.mtx); 1151 rtnl_unlock(); 1152 } 1153 1154 return 0; 1155 } 1156 1157 /* message building helper */ 1158 void *nl80211hdr_put(struct sk_buff *skb, u32 portid, u32 seq, 1159 int flags, u8 cmd) 1160 { 1161 /* since there is no private header just add the generic one */ 1162 return genlmsg_put(skb, portid, seq, &nl80211_fam, flags, cmd); 1163 } 1164 1165 static int nl80211_msg_put_wmm_rules(struct sk_buff *msg, 1166 const struct ieee80211_reg_rule *rule) 1167 { 1168 int j; 1169 struct nlattr *nl_wmm_rules = 1170 nla_nest_start_noflag(msg, NL80211_FREQUENCY_ATTR_WMM); 1171 1172 if (!nl_wmm_rules) 1173 goto nla_put_failure; 1174 1175 for (j = 0; j < IEEE80211_NUM_ACS; j++) { 1176 struct nlattr *nl_wmm_rule = nla_nest_start_noflag(msg, j); 1177 1178 if (!nl_wmm_rule) 1179 goto nla_put_failure; 1180 1181 if (nla_put_u16(msg, NL80211_WMMR_CW_MIN, 1182 rule->wmm_rule.client[j].cw_min) || 1183 nla_put_u16(msg, NL80211_WMMR_CW_MAX, 1184 rule->wmm_rule.client[j].cw_max) || 1185 nla_put_u8(msg, NL80211_WMMR_AIFSN, 1186 rule->wmm_rule.client[j].aifsn) || 1187 nla_put_u16(msg, NL80211_WMMR_TXOP, 1188 rule->wmm_rule.client[j].cot)) 1189 goto nla_put_failure; 1190 1191 nla_nest_end(msg, nl_wmm_rule); 1192 } 1193 nla_nest_end(msg, nl_wmm_rules); 1194 1195 return 0; 1196 1197 nla_put_failure: 1198 return -ENOBUFS; 1199 } 1200 1201 static int nl80211_msg_put_channel(struct sk_buff *msg, struct wiphy *wiphy, 1202 struct ieee80211_channel *chan, 1203 bool large) 1204 { 1205 /* Some channels must be completely excluded from the 1206 * list to protect old user-space tools from breaking 1207 */ 1208 if (!large && chan->flags & 1209 (IEEE80211_CHAN_NO_10MHZ | IEEE80211_CHAN_NO_20MHZ)) 1210 return 0; 1211 if (!large && chan->freq_offset) 1212 return 0; 1213 1214 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_FREQ, 1215 chan->center_freq)) 1216 goto nla_put_failure; 1217 1218 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_OFFSET, chan->freq_offset)) 1219 goto nla_put_failure; 1220 1221 if ((chan->flags & IEEE80211_CHAN_PSD) && 1222 nla_put_s8(msg, NL80211_FREQUENCY_ATTR_PSD, chan->psd)) 1223 goto nla_put_failure; 1224 1225 if ((chan->flags & IEEE80211_CHAN_DISABLED) && 1226 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_DISABLED)) 1227 goto nla_put_failure; 1228 if (chan->flags & IEEE80211_CHAN_NO_IR) { 1229 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_IR)) 1230 goto nla_put_failure; 1231 if (nla_put_flag(msg, __NL80211_FREQUENCY_ATTR_NO_IBSS)) 1232 goto nla_put_failure; 1233 } 1234 if (chan->flags & IEEE80211_CHAN_RADAR) { 1235 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_RADAR)) 1236 goto nla_put_failure; 1237 if (large) { 1238 u32 time; 1239 1240 time = elapsed_jiffies_msecs(chan->dfs_state_entered); 1241 1242 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_STATE, 1243 chan->dfs_state)) 1244 goto nla_put_failure; 1245 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_TIME, 1246 time)) 1247 goto nla_put_failure; 1248 if (nla_put_u32(msg, 1249 NL80211_FREQUENCY_ATTR_DFS_CAC_TIME, 1250 chan->dfs_cac_ms)) 1251 goto nla_put_failure; 1252 } 1253 } 1254 1255 if (large) { 1256 if ((chan->flags & IEEE80211_CHAN_NO_HT40MINUS) && 1257 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_MINUS)) 1258 goto nla_put_failure; 1259 if ((chan->flags & IEEE80211_CHAN_NO_HT40PLUS) && 1260 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_PLUS)) 1261 goto nla_put_failure; 1262 if ((chan->flags & IEEE80211_CHAN_NO_80MHZ) && 1263 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_80MHZ)) 1264 goto nla_put_failure; 1265 if ((chan->flags & IEEE80211_CHAN_NO_160MHZ) && 1266 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_160MHZ)) 1267 goto nla_put_failure; 1268 if ((chan->flags & IEEE80211_CHAN_INDOOR_ONLY) && 1269 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_INDOOR_ONLY)) 1270 goto nla_put_failure; 1271 if ((chan->flags & IEEE80211_CHAN_IR_CONCURRENT) && 1272 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_IR_CONCURRENT)) 1273 goto nla_put_failure; 1274 if ((chan->flags & IEEE80211_CHAN_NO_20MHZ) && 1275 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_20MHZ)) 1276 goto nla_put_failure; 1277 if ((chan->flags & IEEE80211_CHAN_NO_10MHZ) && 1278 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_10MHZ)) 1279 goto nla_put_failure; 1280 if ((chan->flags & IEEE80211_CHAN_NO_HE) && 1281 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HE)) 1282 goto nla_put_failure; 1283 if ((chan->flags & IEEE80211_CHAN_NO_320MHZ) && 1284 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_320MHZ)) 1285 goto nla_put_failure; 1286 if ((chan->flags & IEEE80211_CHAN_NO_EHT) && 1287 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_EHT)) 1288 goto nla_put_failure; 1289 if ((chan->flags & IEEE80211_CHAN_DFS_CONCURRENT) && 1290 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_DFS_CONCURRENT)) 1291 goto nla_put_failure; 1292 if ((chan->flags & IEEE80211_CHAN_NO_6GHZ_VLP_CLIENT) && 1293 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_6GHZ_VLP_CLIENT)) 1294 goto nla_put_failure; 1295 if ((chan->flags & IEEE80211_CHAN_NO_6GHZ_AFC_CLIENT) && 1296 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_6GHZ_AFC_CLIENT)) 1297 goto nla_put_failure; 1298 if ((chan->flags & IEEE80211_CHAN_CAN_MONITOR) && 1299 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_CAN_MONITOR)) 1300 goto nla_put_failure; 1301 if ((chan->flags & IEEE80211_CHAN_ALLOW_6GHZ_VLP_AP) && 1302 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_ALLOW_6GHZ_VLP_AP)) 1303 goto nla_put_failure; 1304 if ((chan->flags & IEEE80211_CHAN_ALLOW_20MHZ_ACTIVITY) && 1305 nla_put_flag(msg, 1306 NL80211_FREQUENCY_ATTR_ALLOW_20MHZ_ACTIVITY)) 1307 goto nla_put_failure; 1308 if ((chan->flags & IEEE80211_CHAN_NO_4MHZ) && 1309 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_4MHZ)) 1310 goto nla_put_failure; 1311 if ((chan->flags & IEEE80211_CHAN_NO_8MHZ) && 1312 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_8MHZ)) 1313 goto nla_put_failure; 1314 if ((chan->flags & IEEE80211_CHAN_NO_16MHZ) && 1315 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_16MHZ)) 1316 goto nla_put_failure; 1317 } 1318 1319 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_MAX_TX_POWER, 1320 DBM_TO_MBM(chan->max_power))) 1321 goto nla_put_failure; 1322 1323 if (large) { 1324 const struct ieee80211_reg_rule *rule = 1325 freq_reg_info(wiphy, MHZ_TO_KHZ(chan->center_freq)); 1326 1327 if (!IS_ERR_OR_NULL(rule) && rule->has_wmm) { 1328 if (nl80211_msg_put_wmm_rules(msg, rule)) 1329 goto nla_put_failure; 1330 } 1331 } 1332 1333 return 0; 1334 1335 nla_put_failure: 1336 return -ENOBUFS; 1337 } 1338 1339 static bool nl80211_put_txq_stats(struct sk_buff *msg, 1340 struct cfg80211_txq_stats *txqstats, 1341 int attrtype) 1342 { 1343 struct nlattr *txqattr; 1344 1345 #define PUT_TXQVAL_U32(attr, memb) do { \ 1346 if (txqstats->filled & BIT(NL80211_TXQ_STATS_ ## attr) && \ 1347 nla_put_u32(msg, NL80211_TXQ_STATS_ ## attr, txqstats->memb)) \ 1348 return false; \ 1349 } while (0) 1350 1351 txqattr = nla_nest_start_noflag(msg, attrtype); 1352 if (!txqattr) 1353 return false; 1354 1355 PUT_TXQVAL_U32(BACKLOG_BYTES, backlog_bytes); 1356 PUT_TXQVAL_U32(BACKLOG_PACKETS, backlog_packets); 1357 PUT_TXQVAL_U32(FLOWS, flows); 1358 PUT_TXQVAL_U32(DROPS, drops); 1359 PUT_TXQVAL_U32(ECN_MARKS, ecn_marks); 1360 PUT_TXQVAL_U32(OVERLIMIT, overlimit); 1361 PUT_TXQVAL_U32(OVERMEMORY, overmemory); 1362 PUT_TXQVAL_U32(COLLISIONS, collisions); 1363 PUT_TXQVAL_U32(TX_BYTES, tx_bytes); 1364 PUT_TXQVAL_U32(TX_PACKETS, tx_packets); 1365 PUT_TXQVAL_U32(MAX_FLOWS, max_flows); 1366 nla_nest_end(msg, txqattr); 1367 1368 #undef PUT_TXQVAL_U32 1369 return true; 1370 } 1371 1372 /* netlink command implementations */ 1373 1374 /** 1375 * nl80211_link_id - return link ID 1376 * @attrs: attributes to look at 1377 * 1378 * Returns: the link ID or 0 if not given 1379 * 1380 * Note this function doesn't do any validation of the link 1381 * ID validity wrt. links that were actually added, so it must 1382 * be called only from ops with %NL80211_FLAG_MLO_VALID_LINK_ID 1383 * or if additional validation is done. 1384 */ 1385 static unsigned int nl80211_link_id(struct nlattr **attrs) 1386 { 1387 struct nlattr *linkid = attrs[NL80211_ATTR_MLO_LINK_ID]; 1388 1389 return nla_get_u8_default(linkid, 0); 1390 } 1391 1392 static int nl80211_link_id_or_invalid(struct nlattr **attrs) 1393 { 1394 struct nlattr *linkid = attrs[NL80211_ATTR_MLO_LINK_ID]; 1395 1396 if (!linkid) 1397 return -1; 1398 1399 return nla_get_u8(linkid); 1400 } 1401 1402 struct key_parse { 1403 struct key_params p; 1404 int idx; 1405 int type; 1406 bool def, defmgmt, defbeacon; 1407 bool def_uni, def_multi; 1408 }; 1409 1410 static int nl80211_parse_key_new(struct genl_info *info, struct nlattr *key, 1411 struct key_parse *k) 1412 { 1413 struct nlattr *tb[NL80211_KEY_MAX + 1]; 1414 int err = nla_parse_nested_deprecated(tb, NL80211_KEY_MAX, key, 1415 nl80211_key_policy, 1416 info->extack); 1417 if (err) 1418 return err; 1419 1420 k->def = !!tb[NL80211_KEY_DEFAULT]; 1421 k->defmgmt = !!tb[NL80211_KEY_DEFAULT_MGMT]; 1422 k->defbeacon = !!tb[NL80211_KEY_DEFAULT_BEACON]; 1423 1424 if (k->def) { 1425 k->def_uni = true; 1426 k->def_multi = true; 1427 } 1428 if (k->defmgmt || k->defbeacon) 1429 k->def_multi = true; 1430 1431 if (tb[NL80211_KEY_IDX]) 1432 k->idx = nla_get_u8(tb[NL80211_KEY_IDX]); 1433 1434 if (tb[NL80211_KEY_DATA]) { 1435 k->p.key = nla_data(tb[NL80211_KEY_DATA]); 1436 k->p.key_len = nla_len(tb[NL80211_KEY_DATA]); 1437 } 1438 1439 if (tb[NL80211_KEY_SEQ]) { 1440 k->p.seq = nla_data(tb[NL80211_KEY_SEQ]); 1441 k->p.seq_len = nla_len(tb[NL80211_KEY_SEQ]); 1442 } 1443 1444 if (tb[NL80211_KEY_CIPHER]) 1445 k->p.cipher = nla_get_u32(tb[NL80211_KEY_CIPHER]); 1446 1447 if (tb[NL80211_KEY_TYPE]) 1448 k->type = nla_get_u32(tb[NL80211_KEY_TYPE]); 1449 1450 if (tb[NL80211_KEY_DEFAULT_TYPES]) { 1451 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES]; 1452 1453 err = nla_parse_nested_deprecated(kdt, 1454 NUM_NL80211_KEY_DEFAULT_TYPES - 1, 1455 tb[NL80211_KEY_DEFAULT_TYPES], 1456 nl80211_key_default_policy, 1457 info->extack); 1458 if (err) 1459 return err; 1460 1461 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST]; 1462 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST]; 1463 } 1464 1465 if (tb[NL80211_KEY_MODE]) 1466 k->p.mode = nla_get_u8(tb[NL80211_KEY_MODE]); 1467 1468 return 0; 1469 } 1470 1471 static int nl80211_parse_key_old(struct genl_info *info, struct key_parse *k) 1472 { 1473 if (info->attrs[NL80211_ATTR_KEY_DATA]) { 1474 k->p.key = nla_data(info->attrs[NL80211_ATTR_KEY_DATA]); 1475 k->p.key_len = nla_len(info->attrs[NL80211_ATTR_KEY_DATA]); 1476 } 1477 1478 if (info->attrs[NL80211_ATTR_KEY_SEQ]) { 1479 k->p.seq = nla_data(info->attrs[NL80211_ATTR_KEY_SEQ]); 1480 k->p.seq_len = nla_len(info->attrs[NL80211_ATTR_KEY_SEQ]); 1481 } 1482 1483 if (info->attrs[NL80211_ATTR_KEY_IDX]) 1484 k->idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]); 1485 1486 if (info->attrs[NL80211_ATTR_KEY_CIPHER]) 1487 k->p.cipher = nla_get_u32(info->attrs[NL80211_ATTR_KEY_CIPHER]); 1488 1489 k->def = !!info->attrs[NL80211_ATTR_KEY_DEFAULT]; 1490 k->defmgmt = !!info->attrs[NL80211_ATTR_KEY_DEFAULT_MGMT]; 1491 1492 if (k->def) { 1493 k->def_uni = true; 1494 k->def_multi = true; 1495 } 1496 if (k->defmgmt) 1497 k->def_multi = true; 1498 1499 if (info->attrs[NL80211_ATTR_KEY_TYPE]) 1500 k->type = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]); 1501 1502 if (info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES]) { 1503 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES]; 1504 int err = nla_parse_nested_deprecated(kdt, 1505 NUM_NL80211_KEY_DEFAULT_TYPES - 1, 1506 info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES], 1507 nl80211_key_default_policy, 1508 info->extack); 1509 if (err) 1510 return err; 1511 1512 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST]; 1513 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST]; 1514 } 1515 1516 return 0; 1517 } 1518 1519 static int nl80211_parse_key(struct genl_info *info, struct key_parse *k) 1520 { 1521 int err; 1522 1523 memset(k, 0, sizeof(*k)); 1524 k->idx = -1; 1525 k->type = -1; 1526 1527 if (info->attrs[NL80211_ATTR_KEY]) 1528 err = nl80211_parse_key_new(info, info->attrs[NL80211_ATTR_KEY], k); 1529 else 1530 err = nl80211_parse_key_old(info, k); 1531 1532 if (err) 1533 return err; 1534 1535 if ((k->def ? 1 : 0) + (k->defmgmt ? 1 : 0) + 1536 (k->defbeacon ? 1 : 0) > 1) { 1537 GENL_SET_ERR_MSG(info, 1538 "key with multiple default flags is invalid"); 1539 return -EINVAL; 1540 } 1541 1542 if (k->defmgmt || k->defbeacon) { 1543 if (k->def_uni || !k->def_multi) { 1544 GENL_SET_ERR_MSG(info, 1545 "defmgmt/defbeacon key must be mcast"); 1546 return -EINVAL; 1547 } 1548 } 1549 1550 if (k->idx != -1) { 1551 if (k->defmgmt) { 1552 if (k->idx < 4 || k->idx > 5) { 1553 GENL_SET_ERR_MSG(info, 1554 "defmgmt key idx not 4 or 5"); 1555 return -EINVAL; 1556 } 1557 } else if (k->defbeacon) { 1558 if (k->idx < 6 || k->idx > 7) { 1559 GENL_SET_ERR_MSG(info, 1560 "defbeacon key idx not 6 or 7"); 1561 return -EINVAL; 1562 } 1563 } else if (k->def) { 1564 if (k->idx < 0 || k->idx > 3) { 1565 GENL_SET_ERR_MSG(info, "def key idx not 0-3"); 1566 return -EINVAL; 1567 } 1568 } else { 1569 if (k->idx < 0 || k->idx > 7) { 1570 GENL_SET_ERR_MSG(info, "key idx not 0-7"); 1571 return -EINVAL; 1572 } 1573 } 1574 } 1575 1576 return 0; 1577 } 1578 1579 static struct cfg80211_cached_keys * 1580 nl80211_parse_connkeys(struct cfg80211_registered_device *rdev, 1581 struct genl_info *info, bool *no_ht) 1582 { 1583 struct nlattr *keys = info->attrs[NL80211_ATTR_KEYS]; 1584 struct key_parse parse; 1585 struct nlattr *key; 1586 struct cfg80211_cached_keys *result; 1587 int rem, err, def = 0; 1588 bool have_key = false; 1589 1590 nla_for_each_nested(key, keys, rem) { 1591 have_key = true; 1592 break; 1593 } 1594 1595 if (!have_key) 1596 return NULL; 1597 1598 result = kzalloc(sizeof(*result), GFP_KERNEL); 1599 if (!result) 1600 return ERR_PTR(-ENOMEM); 1601 1602 result->def = -1; 1603 1604 nla_for_each_nested(key, keys, rem) { 1605 memset(&parse, 0, sizeof(parse)); 1606 parse.idx = -1; 1607 1608 err = nl80211_parse_key_new(info, key, &parse); 1609 if (err) 1610 goto error; 1611 err = -EINVAL; 1612 if (!parse.p.key) 1613 goto error; 1614 if (parse.idx < 0 || parse.idx > 3) { 1615 GENL_SET_ERR_MSG(info, "key index out of range [0-3]"); 1616 goto error; 1617 } 1618 if (parse.def) { 1619 if (def) { 1620 GENL_SET_ERR_MSG(info, 1621 "only one key can be default"); 1622 goto error; 1623 } 1624 def = 1; 1625 result->def = parse.idx; 1626 if (!parse.def_uni || !parse.def_multi) 1627 goto error; 1628 } else if (parse.defmgmt) 1629 goto error; 1630 err = cfg80211_validate_key_settings(rdev, &parse.p, 1631 parse.idx, false, NULL); 1632 if (err) 1633 goto error; 1634 if (parse.p.cipher != WLAN_CIPHER_SUITE_WEP40 && 1635 parse.p.cipher != WLAN_CIPHER_SUITE_WEP104) { 1636 GENL_SET_ERR_MSG(info, "connect key must be WEP"); 1637 err = -EINVAL; 1638 goto error; 1639 } 1640 result->params[parse.idx].cipher = parse.p.cipher; 1641 result->params[parse.idx].key_len = parse.p.key_len; 1642 result->params[parse.idx].key = result->data[parse.idx]; 1643 memcpy(result->data[parse.idx], parse.p.key, parse.p.key_len); 1644 1645 /* must be WEP key if we got here */ 1646 if (no_ht) 1647 *no_ht = true; 1648 } 1649 1650 if (result->def < 0) { 1651 err = -EINVAL; 1652 GENL_SET_ERR_MSG(info, "need a default/TX key"); 1653 goto error; 1654 } 1655 1656 return result; 1657 error: 1658 kfree_sensitive(result); 1659 return ERR_PTR(err); 1660 } 1661 1662 static int nl80211_key_allowed(struct wireless_dev *wdev) 1663 { 1664 lockdep_assert_wiphy(wdev->wiphy); 1665 1666 switch (wdev->iftype) { 1667 case NL80211_IFTYPE_AP: 1668 case NL80211_IFTYPE_AP_VLAN: 1669 case NL80211_IFTYPE_P2P_GO: 1670 case NL80211_IFTYPE_MESH_POINT: 1671 break; 1672 case NL80211_IFTYPE_ADHOC: 1673 if (wdev->u.ibss.current_bss) 1674 return 0; 1675 return -ENOLINK; 1676 case NL80211_IFTYPE_STATION: 1677 case NL80211_IFTYPE_P2P_CLIENT: 1678 if (wdev->connected) 1679 return 0; 1680 return -ENOLINK; 1681 case NL80211_IFTYPE_NAN: 1682 if (wiphy_ext_feature_isset(wdev->wiphy, 1683 NL80211_EXT_FEATURE_SECURE_NAN)) 1684 return 0; 1685 return -EINVAL; 1686 case NL80211_IFTYPE_UNSPECIFIED: 1687 case NL80211_IFTYPE_OCB: 1688 case NL80211_IFTYPE_MONITOR: 1689 case NL80211_IFTYPE_P2P_DEVICE: 1690 case NL80211_IFTYPE_WDS: 1691 case NUM_NL80211_IFTYPES: 1692 return -EINVAL; 1693 } 1694 1695 return 0; 1696 } 1697 1698 static struct ieee80211_channel *nl80211_get_valid_chan(struct wiphy *wiphy, 1699 u32 freq) 1700 { 1701 struct ieee80211_channel *chan; 1702 1703 chan = ieee80211_get_channel_khz(wiphy, freq); 1704 if (!chan || chan->flags & IEEE80211_CHAN_DISABLED) 1705 return NULL; 1706 return chan; 1707 } 1708 1709 static int nl80211_put_iftypes(struct sk_buff *msg, u32 attr, u16 ifmodes) 1710 { 1711 struct nlattr *nl_modes = nla_nest_start_noflag(msg, attr); 1712 int i; 1713 1714 if (!nl_modes) 1715 goto nla_put_failure; 1716 1717 i = 0; 1718 while (ifmodes) { 1719 if ((ifmodes & 1) && nla_put_flag(msg, i)) 1720 goto nla_put_failure; 1721 ifmodes >>= 1; 1722 i++; 1723 } 1724 1725 nla_nest_end(msg, nl_modes); 1726 return 0; 1727 1728 nla_put_failure: 1729 return -ENOBUFS; 1730 } 1731 1732 static int nl80211_put_ifcomb_data(struct sk_buff *msg, bool large, int idx, 1733 const struct ieee80211_iface_combination *c, 1734 u16 nested) 1735 { 1736 struct nlattr *nl_combi, *nl_limits; 1737 int i; 1738 1739 nl_combi = nla_nest_start_noflag(msg, idx | nested); 1740 if (!nl_combi) 1741 goto nla_put_failure; 1742 1743 nl_limits = nla_nest_start_noflag(msg, NL80211_IFACE_COMB_LIMITS | 1744 nested); 1745 if (!nl_limits) 1746 goto nla_put_failure; 1747 1748 for (i = 0; i < c->n_limits; i++) { 1749 struct nlattr *nl_limit; 1750 1751 nl_limit = nla_nest_start_noflag(msg, i + 1); 1752 if (!nl_limit) 1753 goto nla_put_failure; 1754 if (nla_put_u32(msg, NL80211_IFACE_LIMIT_MAX, c->limits[i].max)) 1755 goto nla_put_failure; 1756 if (nl80211_put_iftypes(msg, NL80211_IFACE_LIMIT_TYPES, 1757 c->limits[i].types)) 1758 goto nla_put_failure; 1759 nla_nest_end(msg, nl_limit); 1760 } 1761 1762 nla_nest_end(msg, nl_limits); 1763 1764 if (c->beacon_int_infra_match && 1765 nla_put_flag(msg, NL80211_IFACE_COMB_STA_AP_BI_MATCH)) 1766 goto nla_put_failure; 1767 if (nla_put_u32(msg, NL80211_IFACE_COMB_NUM_CHANNELS, 1768 c->num_different_channels) || 1769 nla_put_u32(msg, NL80211_IFACE_COMB_MAXNUM, 1770 c->max_interfaces)) 1771 goto nla_put_failure; 1772 if (large && 1773 (nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_WIDTHS, 1774 c->radar_detect_widths) || 1775 nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_REGIONS, 1776 c->radar_detect_regions))) 1777 goto nla_put_failure; 1778 if (c->beacon_int_min_gcd && 1779 nla_put_u32(msg, NL80211_IFACE_COMB_BI_MIN_GCD, 1780 c->beacon_int_min_gcd)) 1781 goto nla_put_failure; 1782 1783 nla_nest_end(msg, nl_combi); 1784 1785 return 0; 1786 nla_put_failure: 1787 return -ENOBUFS; 1788 } 1789 1790 static int nl80211_put_iface_combinations(struct wiphy *wiphy, 1791 struct sk_buff *msg, 1792 int attr, int radio, 1793 bool large, u16 nested) 1794 { 1795 const struct ieee80211_iface_combination *c; 1796 struct nlattr *nl_combis; 1797 int i, n; 1798 1799 nl_combis = nla_nest_start_noflag(msg, attr | nested); 1800 if (!nl_combis) 1801 goto nla_put_failure; 1802 1803 if (radio >= 0) { 1804 c = wiphy->radio[0].iface_combinations; 1805 n = wiphy->radio[0].n_iface_combinations; 1806 } else { 1807 c = wiphy->iface_combinations; 1808 n = wiphy->n_iface_combinations; 1809 } 1810 for (i = 0; i < n; i++) 1811 if (nl80211_put_ifcomb_data(msg, large, i + 1, &c[i], nested)) 1812 goto nla_put_failure; 1813 1814 nla_nest_end(msg, nl_combis); 1815 1816 return 0; 1817 nla_put_failure: 1818 return -ENOBUFS; 1819 } 1820 1821 #ifdef CONFIG_PM 1822 static int nl80211_send_wowlan_tcp_caps(struct cfg80211_registered_device *rdev, 1823 struct sk_buff *msg) 1824 { 1825 const struct wiphy_wowlan_tcp_support *tcp = rdev->wiphy.wowlan->tcp; 1826 struct nlattr *nl_tcp; 1827 1828 if (!tcp) 1829 return 0; 1830 1831 nl_tcp = nla_nest_start_noflag(msg, 1832 NL80211_WOWLAN_TRIG_TCP_CONNECTION); 1833 if (!nl_tcp) 1834 return -ENOBUFS; 1835 1836 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD, 1837 tcp->data_payload_max)) 1838 return -ENOBUFS; 1839 1840 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD, 1841 tcp->data_payload_max)) 1842 return -ENOBUFS; 1843 1844 if (tcp->seq && nla_put_flag(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ)) 1845 return -ENOBUFS; 1846 1847 if (tcp->tok && nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN, 1848 sizeof(*tcp->tok), tcp->tok)) 1849 return -ENOBUFS; 1850 1851 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL, 1852 tcp->data_interval_max)) 1853 return -ENOBUFS; 1854 1855 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD, 1856 tcp->wake_payload_max)) 1857 return -ENOBUFS; 1858 1859 nla_nest_end(msg, nl_tcp); 1860 return 0; 1861 } 1862 1863 static int nl80211_send_wowlan(struct sk_buff *msg, 1864 struct cfg80211_registered_device *rdev, 1865 bool large) 1866 { 1867 struct nlattr *nl_wowlan; 1868 1869 if (!rdev->wiphy.wowlan) 1870 return 0; 1871 1872 nl_wowlan = nla_nest_start_noflag(msg, 1873 NL80211_ATTR_WOWLAN_TRIGGERS_SUPPORTED); 1874 if (!nl_wowlan) 1875 return -ENOBUFS; 1876 1877 if (((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_ANY) && 1878 nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) || 1879 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_DISCONNECT) && 1880 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) || 1881 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT) && 1882 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) || 1883 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_SUPPORTS_GTK_REKEY) && 1884 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED)) || 1885 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE) && 1886 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) || 1887 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ) && 1888 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) || 1889 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE) && 1890 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) || 1891 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE) && 1892 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE))) 1893 return -ENOBUFS; 1894 1895 if (rdev->wiphy.wowlan->n_patterns) { 1896 struct nl80211_pattern_support pat = { 1897 .max_patterns = rdev->wiphy.wowlan->n_patterns, 1898 .min_pattern_len = rdev->wiphy.wowlan->pattern_min_len, 1899 .max_pattern_len = rdev->wiphy.wowlan->pattern_max_len, 1900 .max_pkt_offset = rdev->wiphy.wowlan->max_pkt_offset, 1901 }; 1902 1903 if (nla_put(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN, 1904 sizeof(pat), &pat)) 1905 return -ENOBUFS; 1906 } 1907 1908 if ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_NET_DETECT) && 1909 nla_put_u32(msg, NL80211_WOWLAN_TRIG_NET_DETECT, 1910 rdev->wiphy.wowlan->max_nd_match_sets)) 1911 return -ENOBUFS; 1912 1913 if (large && nl80211_send_wowlan_tcp_caps(rdev, msg)) 1914 return -ENOBUFS; 1915 1916 nla_nest_end(msg, nl_wowlan); 1917 1918 return 0; 1919 } 1920 #endif 1921 1922 static int nl80211_send_coalesce(struct sk_buff *msg, 1923 struct cfg80211_registered_device *rdev) 1924 { 1925 struct nl80211_coalesce_rule_support rule; 1926 1927 if (!rdev->wiphy.coalesce) 1928 return 0; 1929 1930 rule.max_rules = rdev->wiphy.coalesce->n_rules; 1931 rule.max_delay = rdev->wiphy.coalesce->max_delay; 1932 rule.pat.max_patterns = rdev->wiphy.coalesce->n_patterns; 1933 rule.pat.min_pattern_len = rdev->wiphy.coalesce->pattern_min_len; 1934 rule.pat.max_pattern_len = rdev->wiphy.coalesce->pattern_max_len; 1935 rule.pat.max_pkt_offset = rdev->wiphy.coalesce->max_pkt_offset; 1936 1937 if (nla_put(msg, NL80211_ATTR_COALESCE_RULE, sizeof(rule), &rule)) 1938 return -ENOBUFS; 1939 1940 return 0; 1941 } 1942 1943 static int 1944 nl80211_send_iftype_data(struct sk_buff *msg, 1945 const struct ieee80211_supported_band *sband, 1946 const struct ieee80211_sband_iftype_data *iftdata) 1947 { 1948 const struct ieee80211_sta_he_cap *he_cap = &iftdata->he_cap; 1949 const struct ieee80211_sta_eht_cap *eht_cap = &iftdata->eht_cap; 1950 1951 if (nl80211_put_iftypes(msg, NL80211_BAND_IFTYPE_ATTR_IFTYPES, 1952 iftdata->types_mask)) 1953 return -ENOBUFS; 1954 1955 if (he_cap->has_he) { 1956 if (nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_CAP_MAC, 1957 sizeof(he_cap->he_cap_elem.mac_cap_info), 1958 he_cap->he_cap_elem.mac_cap_info) || 1959 nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_CAP_PHY, 1960 sizeof(he_cap->he_cap_elem.phy_cap_info), 1961 he_cap->he_cap_elem.phy_cap_info) || 1962 nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_CAP_MCS_SET, 1963 sizeof(he_cap->he_mcs_nss_supp), 1964 &he_cap->he_mcs_nss_supp) || 1965 nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_CAP_PPE, 1966 sizeof(he_cap->ppe_thres), he_cap->ppe_thres)) 1967 return -ENOBUFS; 1968 } 1969 1970 if (eht_cap->has_eht && he_cap->has_he) { 1971 u8 mcs_nss_size, ppe_thresh_size; 1972 u16 ppe_thres_hdr; 1973 bool is_ap; 1974 1975 is_ap = iftdata->types_mask & BIT(NL80211_IFTYPE_AP) || 1976 iftdata->types_mask & BIT(NL80211_IFTYPE_P2P_GO); 1977 1978 mcs_nss_size = 1979 ieee80211_eht_mcs_nss_size(&he_cap->he_cap_elem, 1980 &eht_cap->eht_cap_elem, 1981 is_ap); 1982 1983 ppe_thres_hdr = get_unaligned_le16(&eht_cap->eht_ppe_thres[0]); 1984 ppe_thresh_size = 1985 ieee80211_eht_ppe_size(ppe_thres_hdr, 1986 eht_cap->eht_cap_elem.phy_cap_info); 1987 1988 if (nla_put(msg, NL80211_BAND_IFTYPE_ATTR_EHT_CAP_MAC, 1989 sizeof(eht_cap->eht_cap_elem.mac_cap_info), 1990 eht_cap->eht_cap_elem.mac_cap_info) || 1991 nla_put(msg, NL80211_BAND_IFTYPE_ATTR_EHT_CAP_PHY, 1992 sizeof(eht_cap->eht_cap_elem.phy_cap_info), 1993 eht_cap->eht_cap_elem.phy_cap_info) || 1994 nla_put(msg, NL80211_BAND_IFTYPE_ATTR_EHT_CAP_MCS_SET, 1995 mcs_nss_size, &eht_cap->eht_mcs_nss_supp) || 1996 nla_put(msg, NL80211_BAND_IFTYPE_ATTR_EHT_CAP_PPE, 1997 ppe_thresh_size, eht_cap->eht_ppe_thres)) 1998 return -ENOBUFS; 1999 } 2000 2001 if (sband->band == NL80211_BAND_6GHZ && 2002 nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_6GHZ_CAPA, 2003 sizeof(iftdata->he_6ghz_capa), 2004 &iftdata->he_6ghz_capa)) 2005 return -ENOBUFS; 2006 2007 if (iftdata->vendor_elems.data && iftdata->vendor_elems.len && 2008 nla_put(msg, NL80211_BAND_IFTYPE_ATTR_VENDOR_ELEMS, 2009 iftdata->vendor_elems.len, iftdata->vendor_elems.data)) 2010 return -ENOBUFS; 2011 2012 return 0; 2013 } 2014 2015 static int nl80211_send_band_rateinfo(struct sk_buff *msg, 2016 struct ieee80211_supported_band *sband, 2017 bool large) 2018 { 2019 struct nlattr *nl_rates, *nl_rate; 2020 struct ieee80211_rate *rate; 2021 int i; 2022 2023 /* add HT info */ 2024 if (sband->ht_cap.ht_supported && 2025 (nla_put(msg, NL80211_BAND_ATTR_HT_MCS_SET, 2026 sizeof(sband->ht_cap.mcs), 2027 &sband->ht_cap.mcs) || 2028 nla_put_u16(msg, NL80211_BAND_ATTR_HT_CAPA, 2029 sband->ht_cap.cap) || 2030 nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_FACTOR, 2031 sband->ht_cap.ampdu_factor) || 2032 nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_DENSITY, 2033 sband->ht_cap.ampdu_density))) 2034 return -ENOBUFS; 2035 2036 /* add VHT info */ 2037 if (sband->vht_cap.vht_supported && 2038 (nla_put(msg, NL80211_BAND_ATTR_VHT_MCS_SET, 2039 sizeof(sband->vht_cap.vht_mcs), 2040 &sband->vht_cap.vht_mcs) || 2041 nla_put_u32(msg, NL80211_BAND_ATTR_VHT_CAPA, 2042 sband->vht_cap.cap))) 2043 return -ENOBUFS; 2044 2045 if (large && sband->n_iftype_data) { 2046 struct nlattr *nl_iftype_data = 2047 nla_nest_start_noflag(msg, 2048 NL80211_BAND_ATTR_IFTYPE_DATA); 2049 const struct ieee80211_sband_iftype_data *iftd; 2050 int err; 2051 2052 if (!nl_iftype_data) 2053 return -ENOBUFS; 2054 2055 for_each_sband_iftype_data(sband, i, iftd) { 2056 struct nlattr *iftdata; 2057 2058 iftdata = nla_nest_start_noflag(msg, i + 1); 2059 if (!iftdata) 2060 return -ENOBUFS; 2061 2062 err = nl80211_send_iftype_data(msg, sband, iftd); 2063 if (err) 2064 return err; 2065 2066 nla_nest_end(msg, iftdata); 2067 } 2068 2069 nla_nest_end(msg, nl_iftype_data); 2070 } 2071 2072 /* add EDMG info */ 2073 if (large && sband->edmg_cap.channels && 2074 (nla_put_u8(msg, NL80211_BAND_ATTR_EDMG_CHANNELS, 2075 sband->edmg_cap.channels) || 2076 nla_put_u8(msg, NL80211_BAND_ATTR_EDMG_BW_CONFIG, 2077 sband->edmg_cap.bw_config))) 2078 2079 return -ENOBUFS; 2080 2081 /* add bitrates */ 2082 nl_rates = nla_nest_start_noflag(msg, NL80211_BAND_ATTR_RATES); 2083 if (!nl_rates) 2084 return -ENOBUFS; 2085 2086 for (i = 0; i < sband->n_bitrates; i++) { 2087 nl_rate = nla_nest_start_noflag(msg, i); 2088 if (!nl_rate) 2089 return -ENOBUFS; 2090 2091 rate = &sband->bitrates[i]; 2092 if (nla_put_u32(msg, NL80211_BITRATE_ATTR_RATE, 2093 rate->bitrate)) 2094 return -ENOBUFS; 2095 if ((rate->flags & IEEE80211_RATE_SHORT_PREAMBLE) && 2096 nla_put_flag(msg, 2097 NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE)) 2098 return -ENOBUFS; 2099 2100 nla_nest_end(msg, nl_rate); 2101 } 2102 2103 nla_nest_end(msg, nl_rates); 2104 2105 /* S1G capabilities */ 2106 if (sband->band == NL80211_BAND_S1GHZ && sband->s1g_cap.s1g && 2107 (nla_put(msg, NL80211_BAND_ATTR_S1G_CAPA, 2108 sizeof(sband->s1g_cap.cap), 2109 sband->s1g_cap.cap) || 2110 nla_put(msg, NL80211_BAND_ATTR_S1G_MCS_NSS_SET, 2111 sizeof(sband->s1g_cap.nss_mcs), 2112 sband->s1g_cap.nss_mcs))) 2113 return -ENOBUFS; 2114 2115 return 0; 2116 } 2117 2118 static int 2119 nl80211_send_mgmt_stypes(struct sk_buff *msg, 2120 const struct ieee80211_txrx_stypes *mgmt_stypes) 2121 { 2122 u16 stypes; 2123 struct nlattr *nl_ftypes, *nl_ifs; 2124 enum nl80211_iftype ift; 2125 int i; 2126 2127 if (!mgmt_stypes) 2128 return 0; 2129 2130 nl_ifs = nla_nest_start_noflag(msg, NL80211_ATTR_TX_FRAME_TYPES); 2131 if (!nl_ifs) 2132 return -ENOBUFS; 2133 2134 for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) { 2135 nl_ftypes = nla_nest_start_noflag(msg, ift); 2136 if (!nl_ftypes) 2137 return -ENOBUFS; 2138 i = 0; 2139 stypes = mgmt_stypes[ift].tx; 2140 while (stypes) { 2141 if ((stypes & 1) && 2142 nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE, 2143 (i << 4) | IEEE80211_FTYPE_MGMT)) 2144 return -ENOBUFS; 2145 stypes >>= 1; 2146 i++; 2147 } 2148 nla_nest_end(msg, nl_ftypes); 2149 } 2150 2151 nla_nest_end(msg, nl_ifs); 2152 2153 nl_ifs = nla_nest_start_noflag(msg, NL80211_ATTR_RX_FRAME_TYPES); 2154 if (!nl_ifs) 2155 return -ENOBUFS; 2156 2157 for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) { 2158 nl_ftypes = nla_nest_start_noflag(msg, ift); 2159 if (!nl_ftypes) 2160 return -ENOBUFS; 2161 i = 0; 2162 stypes = mgmt_stypes[ift].rx; 2163 while (stypes) { 2164 if ((stypes & 1) && 2165 nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE, 2166 (i << 4) | IEEE80211_FTYPE_MGMT)) 2167 return -ENOBUFS; 2168 stypes >>= 1; 2169 i++; 2170 } 2171 nla_nest_end(msg, nl_ftypes); 2172 } 2173 nla_nest_end(msg, nl_ifs); 2174 2175 return 0; 2176 } 2177 2178 #define CMD(op, n) \ 2179 do { \ 2180 if (rdev->ops->op) { \ 2181 i++; \ 2182 if (nla_put_u32(msg, i, NL80211_CMD_ ## n)) \ 2183 goto nla_put_failure; \ 2184 } \ 2185 } while (0) 2186 2187 static int nl80211_add_commands_unsplit(struct cfg80211_registered_device *rdev, 2188 struct sk_buff *msg) 2189 { 2190 int i = 0; 2191 2192 /* 2193 * do *NOT* add anything into this function, new things need to be 2194 * advertised only to new versions of userspace that can deal with 2195 * the split (and they can't possibly care about new features... 2196 */ 2197 CMD(add_virtual_intf, NEW_INTERFACE); 2198 CMD(change_virtual_intf, SET_INTERFACE); 2199 CMD(add_key, NEW_KEY); 2200 CMD(start_ap, START_AP); 2201 CMD(add_station, NEW_STATION); 2202 CMD(add_mpath, NEW_MPATH); 2203 CMD(update_mesh_config, SET_MESH_CONFIG); 2204 CMD(change_bss, SET_BSS); 2205 CMD(auth, AUTHENTICATE); 2206 CMD(assoc, ASSOCIATE); 2207 CMD(deauth, DEAUTHENTICATE); 2208 CMD(disassoc, DISASSOCIATE); 2209 CMD(join_ibss, JOIN_IBSS); 2210 CMD(join_mesh, JOIN_MESH); 2211 CMD(set_pmksa, SET_PMKSA); 2212 CMD(del_pmksa, DEL_PMKSA); 2213 CMD(flush_pmksa, FLUSH_PMKSA); 2214 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL) 2215 CMD(remain_on_channel, REMAIN_ON_CHANNEL); 2216 CMD(set_bitrate_mask, SET_TX_BITRATE_MASK); 2217 CMD(mgmt_tx, FRAME); 2218 CMD(mgmt_tx_cancel_wait, FRAME_WAIT_CANCEL); 2219 if (rdev->wiphy.flags & WIPHY_FLAG_NETNS_OK) { 2220 i++; 2221 if (nla_put_u32(msg, i, NL80211_CMD_SET_WIPHY_NETNS)) 2222 goto nla_put_failure; 2223 } 2224 if (rdev->ops->set_monitor_channel || rdev->ops->start_ap || 2225 rdev->ops->join_mesh) { 2226 i++; 2227 if (nla_put_u32(msg, i, NL80211_CMD_SET_CHANNEL)) 2228 goto nla_put_failure; 2229 } 2230 if (rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) { 2231 CMD(tdls_mgmt, TDLS_MGMT); 2232 CMD(tdls_oper, TDLS_OPER); 2233 } 2234 if (rdev->wiphy.max_sched_scan_reqs) 2235 CMD(sched_scan_start, START_SCHED_SCAN); 2236 CMD(probe_client, PROBE_CLIENT); 2237 CMD(set_noack_map, SET_NOACK_MAP); 2238 if (rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS) { 2239 i++; 2240 if (nla_put_u32(msg, i, NL80211_CMD_REGISTER_BEACONS)) 2241 goto nla_put_failure; 2242 } 2243 CMD(start_p2p_device, START_P2P_DEVICE); 2244 CMD(set_mcast_rate, SET_MCAST_RATE); 2245 #ifdef CONFIG_NL80211_TESTMODE 2246 CMD(testmode_cmd, TESTMODE); 2247 #endif 2248 2249 if (rdev->ops->connect || rdev->ops->auth) { 2250 i++; 2251 if (nla_put_u32(msg, i, NL80211_CMD_CONNECT)) 2252 goto nla_put_failure; 2253 } 2254 2255 if (rdev->ops->disconnect || rdev->ops->deauth) { 2256 i++; 2257 if (nla_put_u32(msg, i, NL80211_CMD_DISCONNECT)) 2258 goto nla_put_failure; 2259 } 2260 2261 return i; 2262 nla_put_failure: 2263 return -ENOBUFS; 2264 } 2265 2266 static int 2267 nl80211_send_pmsr_ftm_capa(const struct cfg80211_pmsr_capabilities *cap, 2268 struct sk_buff *msg) 2269 { 2270 struct nlattr *ftm; 2271 2272 if (!cap->ftm.supported) 2273 return 0; 2274 2275 ftm = nla_nest_start_noflag(msg, NL80211_PMSR_TYPE_FTM); 2276 if (!ftm) 2277 return -ENOBUFS; 2278 2279 if (cap->ftm.asap && nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_ASAP)) 2280 return -ENOBUFS; 2281 if (cap->ftm.non_asap && 2282 nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_NON_ASAP)) 2283 return -ENOBUFS; 2284 if (cap->ftm.request_lci && 2285 nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_REQ_LCI)) 2286 return -ENOBUFS; 2287 if (cap->ftm.request_civicloc && 2288 nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_REQ_CIVICLOC)) 2289 return -ENOBUFS; 2290 if (nla_put_u32(msg, NL80211_PMSR_FTM_CAPA_ATTR_PREAMBLES, 2291 cap->ftm.preambles)) 2292 return -ENOBUFS; 2293 if (nla_put_u32(msg, NL80211_PMSR_FTM_CAPA_ATTR_BANDWIDTHS, 2294 cap->ftm.bandwidths)) 2295 return -ENOBUFS; 2296 if (cap->ftm.max_bursts_exponent >= 0 && 2297 nla_put_u32(msg, NL80211_PMSR_FTM_CAPA_ATTR_MAX_BURSTS_EXPONENT, 2298 cap->ftm.max_bursts_exponent)) 2299 return -ENOBUFS; 2300 if (cap->ftm.max_ftms_per_burst && 2301 nla_put_u32(msg, NL80211_PMSR_FTM_CAPA_ATTR_MAX_FTMS_PER_BURST, 2302 cap->ftm.max_ftms_per_burst)) 2303 return -ENOBUFS; 2304 if (cap->ftm.trigger_based && 2305 nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_TRIGGER_BASED)) 2306 return -ENOBUFS; 2307 if (cap->ftm.non_trigger_based && 2308 nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_NON_TRIGGER_BASED)) 2309 return -ENOBUFS; 2310 2311 nla_nest_end(msg, ftm); 2312 return 0; 2313 } 2314 2315 static int nl80211_send_pmsr_capa(struct cfg80211_registered_device *rdev, 2316 struct sk_buff *msg) 2317 { 2318 const struct cfg80211_pmsr_capabilities *cap = rdev->wiphy.pmsr_capa; 2319 struct nlattr *pmsr, *caps; 2320 2321 if (!cap) 2322 return 0; 2323 2324 /* 2325 * we don't need to clean up anything here since the caller 2326 * will genlmsg_cancel() if we fail 2327 */ 2328 2329 pmsr = nla_nest_start_noflag(msg, NL80211_ATTR_PEER_MEASUREMENTS); 2330 if (!pmsr) 2331 return -ENOBUFS; 2332 2333 if (nla_put_u32(msg, NL80211_PMSR_ATTR_MAX_PEERS, cap->max_peers)) 2334 return -ENOBUFS; 2335 2336 if (cap->report_ap_tsf && 2337 nla_put_flag(msg, NL80211_PMSR_ATTR_REPORT_AP_TSF)) 2338 return -ENOBUFS; 2339 2340 if (cap->randomize_mac_addr && 2341 nla_put_flag(msg, NL80211_PMSR_ATTR_RANDOMIZE_MAC_ADDR)) 2342 return -ENOBUFS; 2343 2344 caps = nla_nest_start_noflag(msg, NL80211_PMSR_ATTR_TYPE_CAPA); 2345 if (!caps) 2346 return -ENOBUFS; 2347 2348 if (nl80211_send_pmsr_ftm_capa(cap, msg)) 2349 return -ENOBUFS; 2350 2351 nla_nest_end(msg, caps); 2352 nla_nest_end(msg, pmsr); 2353 2354 return 0; 2355 } 2356 2357 static int 2358 nl80211_put_iftype_akm_suites(struct cfg80211_registered_device *rdev, 2359 struct sk_buff *msg) 2360 { 2361 int i; 2362 struct nlattr *nested, *nested_akms; 2363 const struct wiphy_iftype_akm_suites *iftype_akms; 2364 2365 if (!rdev->wiphy.num_iftype_akm_suites || 2366 !rdev->wiphy.iftype_akm_suites) 2367 return 0; 2368 2369 nested = nla_nest_start(msg, NL80211_ATTR_IFTYPE_AKM_SUITES); 2370 if (!nested) 2371 return -ENOBUFS; 2372 2373 for (i = 0; i < rdev->wiphy.num_iftype_akm_suites; i++) { 2374 nested_akms = nla_nest_start(msg, i + 1); 2375 if (!nested_akms) 2376 return -ENOBUFS; 2377 2378 iftype_akms = &rdev->wiphy.iftype_akm_suites[i]; 2379 2380 if (nl80211_put_iftypes(msg, NL80211_IFTYPE_AKM_ATTR_IFTYPES, 2381 iftype_akms->iftypes_mask)) 2382 return -ENOBUFS; 2383 2384 if (nla_put(msg, NL80211_IFTYPE_AKM_ATTR_SUITES, 2385 sizeof(u32) * iftype_akms->n_akm_suites, 2386 iftype_akms->akm_suites)) { 2387 return -ENOBUFS; 2388 } 2389 nla_nest_end(msg, nested_akms); 2390 } 2391 2392 nla_nest_end(msg, nested); 2393 2394 return 0; 2395 } 2396 2397 static int 2398 nl80211_put_tid_config_support(struct cfg80211_registered_device *rdev, 2399 struct sk_buff *msg) 2400 { 2401 struct nlattr *supp; 2402 2403 if (!rdev->wiphy.tid_config_support.vif && 2404 !rdev->wiphy.tid_config_support.peer) 2405 return 0; 2406 2407 supp = nla_nest_start(msg, NL80211_ATTR_TID_CONFIG); 2408 if (!supp) 2409 return -ENOSPC; 2410 2411 if (rdev->wiphy.tid_config_support.vif && 2412 nla_put_u64_64bit(msg, NL80211_TID_CONFIG_ATTR_VIF_SUPP, 2413 rdev->wiphy.tid_config_support.vif, 2414 NL80211_TID_CONFIG_ATTR_PAD)) 2415 goto fail; 2416 2417 if (rdev->wiphy.tid_config_support.peer && 2418 nla_put_u64_64bit(msg, NL80211_TID_CONFIG_ATTR_PEER_SUPP, 2419 rdev->wiphy.tid_config_support.peer, 2420 NL80211_TID_CONFIG_ATTR_PAD)) 2421 goto fail; 2422 2423 /* for now we just use the same value ... makes more sense */ 2424 if (nla_put_u8(msg, NL80211_TID_CONFIG_ATTR_RETRY_SHORT, 2425 rdev->wiphy.tid_config_support.max_retry)) 2426 goto fail; 2427 if (nla_put_u8(msg, NL80211_TID_CONFIG_ATTR_RETRY_LONG, 2428 rdev->wiphy.tid_config_support.max_retry)) 2429 goto fail; 2430 2431 nla_nest_end(msg, supp); 2432 2433 return 0; 2434 fail: 2435 nla_nest_cancel(msg, supp); 2436 return -ENOBUFS; 2437 } 2438 2439 static int 2440 nl80211_put_sar_specs(struct cfg80211_registered_device *rdev, 2441 struct sk_buff *msg) 2442 { 2443 struct nlattr *sar_capa, *specs, *sub_freq_range; 2444 u8 num_freq_ranges; 2445 int i; 2446 2447 if (!rdev->wiphy.sar_capa) 2448 return 0; 2449 2450 num_freq_ranges = rdev->wiphy.sar_capa->num_freq_ranges; 2451 2452 sar_capa = nla_nest_start(msg, NL80211_ATTR_SAR_SPEC); 2453 if (!sar_capa) 2454 return -ENOSPC; 2455 2456 if (nla_put_u32(msg, NL80211_SAR_ATTR_TYPE, rdev->wiphy.sar_capa->type)) 2457 goto fail; 2458 2459 specs = nla_nest_start(msg, NL80211_SAR_ATTR_SPECS); 2460 if (!specs) 2461 goto fail; 2462 2463 /* report supported freq_ranges */ 2464 for (i = 0; i < num_freq_ranges; i++) { 2465 sub_freq_range = nla_nest_start(msg, i + 1); 2466 if (!sub_freq_range) 2467 goto fail; 2468 2469 if (nla_put_u32(msg, NL80211_SAR_ATTR_SPECS_START_FREQ, 2470 rdev->wiphy.sar_capa->freq_ranges[i].start_freq)) 2471 goto fail; 2472 2473 if (nla_put_u32(msg, NL80211_SAR_ATTR_SPECS_END_FREQ, 2474 rdev->wiphy.sar_capa->freq_ranges[i].end_freq)) 2475 goto fail; 2476 2477 nla_nest_end(msg, sub_freq_range); 2478 } 2479 2480 nla_nest_end(msg, specs); 2481 nla_nest_end(msg, sar_capa); 2482 2483 return 0; 2484 fail: 2485 nla_nest_cancel(msg, sar_capa); 2486 return -ENOBUFS; 2487 } 2488 2489 static int nl80211_put_mbssid_support(struct wiphy *wiphy, struct sk_buff *msg) 2490 { 2491 struct nlattr *config; 2492 2493 if (!wiphy->mbssid_max_interfaces) 2494 return 0; 2495 2496 config = nla_nest_start(msg, NL80211_ATTR_MBSSID_CONFIG); 2497 if (!config) 2498 return -ENOBUFS; 2499 2500 if (nla_put_u8(msg, NL80211_MBSSID_CONFIG_ATTR_MAX_INTERFACES, 2501 wiphy->mbssid_max_interfaces)) 2502 goto fail; 2503 2504 if (wiphy->ema_max_profile_periodicity && 2505 nla_put_u8(msg, 2506 NL80211_MBSSID_CONFIG_ATTR_MAX_EMA_PROFILE_PERIODICITY, 2507 wiphy->ema_max_profile_periodicity)) 2508 goto fail; 2509 2510 nla_nest_end(msg, config); 2511 return 0; 2512 2513 fail: 2514 nla_nest_cancel(msg, config); 2515 return -ENOBUFS; 2516 } 2517 2518 static int nl80211_put_radio(struct wiphy *wiphy, struct sk_buff *msg, int idx) 2519 { 2520 const struct wiphy_radio *r = &wiphy->radio[idx]; 2521 const struct wiphy_radio_cfg *rcfg = &wiphy->radio_cfg[idx]; 2522 struct nlattr *radio, *freq; 2523 int i; 2524 2525 radio = nla_nest_start(msg, idx); 2526 if (!radio) 2527 return -ENOBUFS; 2528 2529 if (nla_put_u32(msg, NL80211_WIPHY_RADIO_ATTR_INDEX, idx)) 2530 goto nla_put_failure; 2531 2532 if (rcfg->rts_threshold && 2533 nla_put_u32(msg, NL80211_WIPHY_RADIO_ATTR_RTS_THRESHOLD, 2534 rcfg->rts_threshold)) 2535 goto nla_put_failure; 2536 2537 if (r->antenna_mask && 2538 nla_put_u32(msg, NL80211_WIPHY_RADIO_ATTR_ANTENNA_MASK, 2539 r->antenna_mask)) 2540 goto nla_put_failure; 2541 2542 for (i = 0; i < r->n_freq_range; i++) { 2543 const struct wiphy_radio_freq_range *range = &r->freq_range[i]; 2544 2545 freq = nla_nest_start(msg, NL80211_WIPHY_RADIO_ATTR_FREQ_RANGE); 2546 if (!freq) 2547 goto nla_put_failure; 2548 2549 if (nla_put_u32(msg, NL80211_WIPHY_RADIO_FREQ_ATTR_START, 2550 range->start_freq) || 2551 nla_put_u32(msg, NL80211_WIPHY_RADIO_FREQ_ATTR_END, 2552 range->end_freq)) 2553 goto nla_put_failure; 2554 2555 nla_nest_end(msg, freq); 2556 } 2557 2558 for (i = 0; i < r->n_iface_combinations; i++) 2559 if (nl80211_put_ifcomb_data(msg, true, 2560 NL80211_WIPHY_RADIO_ATTR_INTERFACE_COMBINATION, 2561 &r->iface_combinations[i], 2562 NLA_F_NESTED)) 2563 goto nla_put_failure; 2564 2565 nla_nest_end(msg, radio); 2566 2567 return 0; 2568 2569 nla_put_failure: 2570 return -ENOBUFS; 2571 } 2572 2573 static int nl80211_put_radios(struct wiphy *wiphy, struct sk_buff *msg) 2574 { 2575 struct nlattr *radios; 2576 int i; 2577 2578 if (!wiphy->n_radio) 2579 return 0; 2580 2581 radios = nla_nest_start(msg, NL80211_ATTR_WIPHY_RADIOS); 2582 if (!radios) 2583 return -ENOBUFS; 2584 2585 for (i = 0; i < wiphy->n_radio; i++) 2586 if (nl80211_put_radio(wiphy, msg, i)) 2587 goto fail; 2588 2589 nla_nest_end(msg, radios); 2590 2591 if (nl80211_put_iface_combinations(wiphy, msg, 2592 NL80211_ATTR_WIPHY_INTERFACE_COMBINATIONS, 2593 -1, true, NLA_F_NESTED)) 2594 return -ENOBUFS; 2595 2596 return 0; 2597 2598 fail: 2599 nla_nest_cancel(msg, radios); 2600 return -ENOBUFS; 2601 } 2602 2603 static int nl80211_put_nan_capa(struct wiphy *wiphy, struct sk_buff *msg) 2604 { 2605 struct nlattr *nan_caps; 2606 2607 nan_caps = nla_nest_start(msg, NL80211_ATTR_NAN_CAPABILITIES); 2608 if (!nan_caps) 2609 return -ENOBUFS; 2610 2611 if (wiphy->nan_capa.flags & WIPHY_NAN_FLAGS_CONFIGURABLE_SYNC && 2612 nla_put_flag(msg, NL80211_NAN_CAPA_CONFIGURABLE_SYNC)) 2613 goto fail; 2614 2615 if ((wiphy->nan_capa.flags & WIPHY_NAN_FLAGS_USERSPACE_DE) && 2616 nla_put_flag(msg, NL80211_NAN_CAPA_USERSPACE_DE)) 2617 goto fail; 2618 2619 if (nla_put_u8(msg, NL80211_NAN_CAPA_OP_MODE, 2620 wiphy->nan_capa.op_mode) || 2621 nla_put_u8(msg, NL80211_NAN_CAPA_NUM_ANTENNAS, 2622 wiphy->nan_capa.n_antennas) || 2623 nla_put_u16(msg, NL80211_NAN_CAPA_MAX_CHANNEL_SWITCH_TIME, 2624 wiphy->nan_capa.max_channel_switch_time) || 2625 nla_put_u8(msg, NL80211_NAN_CAPA_CAPABILITIES, 2626 wiphy->nan_capa.dev_capabilities)) 2627 goto fail; 2628 2629 nla_nest_end(msg, nan_caps); 2630 2631 return 0; 2632 2633 fail: 2634 nla_nest_cancel(msg, nan_caps); 2635 return -ENOBUFS; 2636 } 2637 2638 struct nl80211_dump_wiphy_state { 2639 s64 filter_wiphy; 2640 long start; 2641 long split_start, band_start, chan_start, capa_start; 2642 bool split; 2643 }; 2644 2645 static int nl80211_send_wiphy(struct cfg80211_registered_device *rdev, 2646 enum nl80211_commands cmd, 2647 struct sk_buff *msg, u32 portid, u32 seq, 2648 int flags, struct nl80211_dump_wiphy_state *state) 2649 { 2650 void *hdr; 2651 struct nlattr *nl_bands, *nl_band; 2652 struct nlattr *nl_freqs, *nl_freq; 2653 struct nlattr *nl_cmds; 2654 enum nl80211_band band; 2655 struct ieee80211_channel *chan; 2656 int i; 2657 const struct ieee80211_txrx_stypes *mgmt_stypes = 2658 rdev->wiphy.mgmt_stypes; 2659 u32 features; 2660 2661 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd); 2662 if (!hdr) 2663 return -ENOBUFS; 2664 2665 if (WARN_ON(!state)) 2666 return -EINVAL; 2667 2668 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 2669 nla_put_string(msg, NL80211_ATTR_WIPHY_NAME, 2670 wiphy_name(&rdev->wiphy)) || 2671 nla_put_u32(msg, NL80211_ATTR_GENERATION, 2672 cfg80211_rdev_list_generation)) 2673 goto nla_put_failure; 2674 2675 if (cmd != NL80211_CMD_NEW_WIPHY) 2676 goto finish; 2677 2678 switch (state->split_start) { 2679 case 0: 2680 if (nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_SHORT, 2681 rdev->wiphy.retry_short) || 2682 nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_LONG, 2683 rdev->wiphy.retry_long) || 2684 nla_put_u32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD, 2685 rdev->wiphy.frag_threshold) || 2686 nla_put_u32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD, 2687 rdev->wiphy.rts_threshold) || 2688 nla_put_u8(msg, NL80211_ATTR_WIPHY_COVERAGE_CLASS, 2689 rdev->wiphy.coverage_class) || 2690 nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCAN_SSIDS, 2691 rdev->wiphy.max_scan_ssids) || 2692 nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS, 2693 rdev->wiphy.max_sched_scan_ssids) || 2694 nla_put_u16(msg, NL80211_ATTR_MAX_SCAN_IE_LEN, 2695 rdev->wiphy.max_scan_ie_len) || 2696 nla_put_u16(msg, NL80211_ATTR_MAX_SCHED_SCAN_IE_LEN, 2697 rdev->wiphy.max_sched_scan_ie_len) || 2698 nla_put_u8(msg, NL80211_ATTR_MAX_MATCH_SETS, 2699 rdev->wiphy.max_match_sets)) 2700 goto nla_put_failure; 2701 2702 if ((rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN) && 2703 nla_put_flag(msg, NL80211_ATTR_SUPPORT_IBSS_RSN)) 2704 goto nla_put_failure; 2705 if ((rdev->wiphy.flags & WIPHY_FLAG_MESH_AUTH) && 2706 nla_put_flag(msg, NL80211_ATTR_SUPPORT_MESH_AUTH)) 2707 goto nla_put_failure; 2708 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) && 2709 nla_put_flag(msg, NL80211_ATTR_SUPPORT_AP_UAPSD)) 2710 goto nla_put_failure; 2711 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_FW_ROAM) && 2712 nla_put_flag(msg, NL80211_ATTR_ROAM_SUPPORT)) 2713 goto nla_put_failure; 2714 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) && 2715 nla_put_flag(msg, NL80211_ATTR_TDLS_SUPPORT)) 2716 goto nla_put_failure; 2717 if ((rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP) && 2718 nla_put_flag(msg, NL80211_ATTR_TDLS_EXTERNAL_SETUP)) 2719 goto nla_put_failure; 2720 state->split_start++; 2721 if (state->split) 2722 break; 2723 fallthrough; 2724 case 1: 2725 if (nla_put(msg, NL80211_ATTR_CIPHER_SUITES, 2726 sizeof(u32) * rdev->wiphy.n_cipher_suites, 2727 rdev->wiphy.cipher_suites)) 2728 goto nla_put_failure; 2729 2730 if (nla_put_u8(msg, NL80211_ATTR_MAX_NUM_PMKIDS, 2731 rdev->wiphy.max_num_pmkids)) 2732 goto nla_put_failure; 2733 2734 if ((rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) && 2735 nla_put_flag(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE)) 2736 goto nla_put_failure; 2737 2738 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_TX, 2739 rdev->wiphy.available_antennas_tx) || 2740 nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_RX, 2741 rdev->wiphy.available_antennas_rx)) 2742 goto nla_put_failure; 2743 2744 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD) && 2745 nla_put_u32(msg, NL80211_ATTR_PROBE_RESP_OFFLOAD, 2746 rdev->wiphy.probe_resp_offload)) 2747 goto nla_put_failure; 2748 2749 if ((rdev->wiphy.available_antennas_tx || 2750 rdev->wiphy.available_antennas_rx) && 2751 rdev->ops->get_antenna) { 2752 u32 tx_ant = 0, rx_ant = 0; 2753 int res; 2754 2755 res = rdev_get_antenna(rdev, -1, &tx_ant, &rx_ant); 2756 if (!res) { 2757 if (nla_put_u32(msg, 2758 NL80211_ATTR_WIPHY_ANTENNA_TX, 2759 tx_ant) || 2760 nla_put_u32(msg, 2761 NL80211_ATTR_WIPHY_ANTENNA_RX, 2762 rx_ant)) 2763 goto nla_put_failure; 2764 } 2765 } 2766 2767 state->split_start++; 2768 if (state->split) 2769 break; 2770 fallthrough; 2771 case 2: 2772 if (nl80211_put_iftypes(msg, NL80211_ATTR_SUPPORTED_IFTYPES, 2773 rdev->wiphy.interface_modes)) 2774 goto nla_put_failure; 2775 state->split_start++; 2776 if (state->split) 2777 break; 2778 fallthrough; 2779 case 3: 2780 nl_bands = nla_nest_start_noflag(msg, 2781 NL80211_ATTR_WIPHY_BANDS); 2782 if (!nl_bands) 2783 goto nla_put_failure; 2784 2785 for (band = state->band_start; 2786 band < (state->split ? 2787 NUM_NL80211_BANDS : 2788 NL80211_BAND_60GHZ + 1); 2789 band++) { 2790 struct ieee80211_supported_band *sband; 2791 2792 /* omit higher bands for ancient software */ 2793 if (band > NL80211_BAND_5GHZ && !state->split) 2794 break; 2795 2796 sband = rdev->wiphy.bands[band]; 2797 2798 if (!sband) 2799 continue; 2800 2801 nl_band = nla_nest_start_noflag(msg, band); 2802 if (!nl_band) 2803 goto nla_put_failure; 2804 2805 switch (state->chan_start) { 2806 case 0: 2807 if (nl80211_send_band_rateinfo(msg, sband, 2808 state->split)) 2809 goto nla_put_failure; 2810 state->chan_start++; 2811 if (state->split) 2812 break; 2813 fallthrough; 2814 default: 2815 /* add frequencies */ 2816 nl_freqs = nla_nest_start_noflag(msg, 2817 NL80211_BAND_ATTR_FREQS); 2818 if (!nl_freqs) 2819 goto nla_put_failure; 2820 2821 for (i = state->chan_start - 1; 2822 i < sband->n_channels; 2823 i++) { 2824 nl_freq = nla_nest_start_noflag(msg, 2825 i); 2826 if (!nl_freq) 2827 goto nla_put_failure; 2828 2829 chan = &sband->channels[i]; 2830 2831 if (nl80211_msg_put_channel( 2832 msg, &rdev->wiphy, chan, 2833 state->split)) 2834 goto nla_put_failure; 2835 2836 nla_nest_end(msg, nl_freq); 2837 if (state->split) 2838 break; 2839 } 2840 if (i < sband->n_channels) 2841 state->chan_start = i + 2; 2842 else 2843 state->chan_start = 0; 2844 nla_nest_end(msg, nl_freqs); 2845 } 2846 2847 nla_nest_end(msg, nl_band); 2848 2849 if (state->split) { 2850 /* start again here */ 2851 if (state->chan_start) 2852 band--; 2853 break; 2854 } 2855 } 2856 nla_nest_end(msg, nl_bands); 2857 2858 if (band < NUM_NL80211_BANDS) 2859 state->band_start = band + 1; 2860 else 2861 state->band_start = 0; 2862 2863 /* if bands & channels are done, continue outside */ 2864 if (state->band_start == 0 && state->chan_start == 0) 2865 state->split_start++; 2866 if (state->split) 2867 break; 2868 fallthrough; 2869 case 4: 2870 nl_cmds = nla_nest_start_noflag(msg, 2871 NL80211_ATTR_SUPPORTED_COMMANDS); 2872 if (!nl_cmds) 2873 goto nla_put_failure; 2874 2875 i = nl80211_add_commands_unsplit(rdev, msg); 2876 if (i < 0) 2877 goto nla_put_failure; 2878 if (state->split) { 2879 CMD(crit_proto_start, CRIT_PROTOCOL_START); 2880 CMD(crit_proto_stop, CRIT_PROTOCOL_STOP); 2881 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH) 2882 CMD(channel_switch, CHANNEL_SWITCH); 2883 CMD(set_qos_map, SET_QOS_MAP); 2884 if (rdev->wiphy.features & 2885 NL80211_FEATURE_SUPPORTS_WMM_ADMISSION) 2886 CMD(add_tx_ts, ADD_TX_TS); 2887 CMD(set_multicast_to_unicast, SET_MULTICAST_TO_UNICAST); 2888 CMD(update_connect_params, UPDATE_CONNECT_PARAMS); 2889 CMD(update_ft_ies, UPDATE_FT_IES); 2890 if (rdev->wiphy.sar_capa) 2891 CMD(set_sar_specs, SET_SAR_SPECS); 2892 CMD(assoc_ml_reconf, ASSOC_MLO_RECONF); 2893 } 2894 #undef CMD 2895 2896 nla_nest_end(msg, nl_cmds); 2897 state->split_start++; 2898 if (state->split) 2899 break; 2900 fallthrough; 2901 case 5: 2902 if (rdev->ops->remain_on_channel && 2903 (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL) && 2904 nla_put_u32(msg, 2905 NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION, 2906 rdev->wiphy.max_remain_on_channel_duration)) 2907 goto nla_put_failure; 2908 2909 if ((rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX) && 2910 nla_put_flag(msg, NL80211_ATTR_OFFCHANNEL_TX_OK)) 2911 goto nla_put_failure; 2912 2913 state->split_start++; 2914 if (state->split) 2915 break; 2916 fallthrough; 2917 case 6: 2918 #ifdef CONFIG_PM 2919 if (nl80211_send_wowlan(msg, rdev, state->split)) 2920 goto nla_put_failure; 2921 state->split_start++; 2922 if (state->split) 2923 break; 2924 #else 2925 state->split_start++; 2926 #endif 2927 fallthrough; 2928 case 7: 2929 if (nl80211_put_iftypes(msg, NL80211_ATTR_SOFTWARE_IFTYPES, 2930 rdev->wiphy.software_iftypes)) 2931 goto nla_put_failure; 2932 2933 if (nl80211_put_iface_combinations(&rdev->wiphy, msg, 2934 NL80211_ATTR_INTERFACE_COMBINATIONS, 2935 rdev->wiphy.n_radio ? 0 : -1, 2936 state->split, 0)) 2937 goto nla_put_failure; 2938 2939 state->split_start++; 2940 if (state->split) 2941 break; 2942 fallthrough; 2943 case 8: 2944 if ((rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME) && 2945 nla_put_u32(msg, NL80211_ATTR_DEVICE_AP_SME, 2946 rdev->wiphy.ap_sme_capa)) 2947 goto nla_put_failure; 2948 2949 features = rdev->wiphy.features; 2950 /* 2951 * We can only add the per-channel limit information if the 2952 * dump is split, otherwise it makes it too big. Therefore 2953 * only advertise it in that case. 2954 */ 2955 if (state->split) 2956 features |= NL80211_FEATURE_ADVERTISE_CHAN_LIMITS; 2957 if (nla_put_u32(msg, NL80211_ATTR_FEATURE_FLAGS, features)) 2958 goto nla_put_failure; 2959 2960 if (rdev->wiphy.ht_capa_mod_mask && 2961 nla_put(msg, NL80211_ATTR_HT_CAPABILITY_MASK, 2962 sizeof(*rdev->wiphy.ht_capa_mod_mask), 2963 rdev->wiphy.ht_capa_mod_mask)) 2964 goto nla_put_failure; 2965 2966 if (rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME && 2967 rdev->wiphy.max_acl_mac_addrs && 2968 nla_put_u32(msg, NL80211_ATTR_MAC_ACL_MAX, 2969 rdev->wiphy.max_acl_mac_addrs)) 2970 goto nla_put_failure; 2971 2972 /* 2973 * Any information below this point is only available to 2974 * applications that can deal with it being split. This 2975 * helps ensure that newly added capabilities don't break 2976 * older tools by overrunning their buffers. 2977 * 2978 * We still increment split_start so that in the split 2979 * case we'll continue with more data in the next round, 2980 * but break unconditionally so unsplit data stops here. 2981 */ 2982 if (state->split) 2983 state->split_start++; 2984 else 2985 state->split_start = 0; 2986 break; 2987 case 9: 2988 if (nl80211_send_mgmt_stypes(msg, mgmt_stypes)) 2989 goto nla_put_failure; 2990 2991 if (nla_put_u32(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_PLANS, 2992 rdev->wiphy.max_sched_scan_plans) || 2993 nla_put_u32(msg, NL80211_ATTR_MAX_SCAN_PLAN_INTERVAL, 2994 rdev->wiphy.max_sched_scan_plan_interval) || 2995 nla_put_u32(msg, NL80211_ATTR_MAX_SCAN_PLAN_ITERATIONS, 2996 rdev->wiphy.max_sched_scan_plan_iterations)) 2997 goto nla_put_failure; 2998 2999 if (rdev->wiphy.extended_capabilities && 3000 (nla_put(msg, NL80211_ATTR_EXT_CAPA, 3001 rdev->wiphy.extended_capabilities_len, 3002 rdev->wiphy.extended_capabilities) || 3003 nla_put(msg, NL80211_ATTR_EXT_CAPA_MASK, 3004 rdev->wiphy.extended_capabilities_len, 3005 rdev->wiphy.extended_capabilities_mask))) 3006 goto nla_put_failure; 3007 3008 if (rdev->wiphy.vht_capa_mod_mask && 3009 nla_put(msg, NL80211_ATTR_VHT_CAPABILITY_MASK, 3010 sizeof(*rdev->wiphy.vht_capa_mod_mask), 3011 rdev->wiphy.vht_capa_mod_mask)) 3012 goto nla_put_failure; 3013 3014 if (nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, 3015 rdev->wiphy.perm_addr)) 3016 goto nla_put_failure; 3017 3018 if (!is_zero_ether_addr(rdev->wiphy.addr_mask) && 3019 nla_put(msg, NL80211_ATTR_MAC_MASK, ETH_ALEN, 3020 rdev->wiphy.addr_mask)) 3021 goto nla_put_failure; 3022 3023 if (rdev->wiphy.n_addresses > 1) { 3024 void *attr; 3025 3026 attr = nla_nest_start(msg, NL80211_ATTR_MAC_ADDRS); 3027 if (!attr) 3028 goto nla_put_failure; 3029 3030 for (i = 0; i < rdev->wiphy.n_addresses; i++) 3031 if (nla_put(msg, i + 1, ETH_ALEN, 3032 rdev->wiphy.addresses[i].addr)) 3033 goto nla_put_failure; 3034 3035 nla_nest_end(msg, attr); 3036 } 3037 3038 state->split_start++; 3039 break; 3040 case 10: 3041 if (nl80211_send_coalesce(msg, rdev)) 3042 goto nla_put_failure; 3043 3044 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ) && 3045 (nla_put_flag(msg, NL80211_ATTR_SUPPORT_5_MHZ) || 3046 nla_put_flag(msg, NL80211_ATTR_SUPPORT_10_MHZ))) 3047 goto nla_put_failure; 3048 3049 if (rdev->wiphy.max_ap_assoc_sta && 3050 nla_put_u32(msg, NL80211_ATTR_MAX_AP_ASSOC_STA, 3051 rdev->wiphy.max_ap_assoc_sta)) 3052 goto nla_put_failure; 3053 3054 state->split_start++; 3055 break; 3056 case 11: 3057 if (rdev->wiphy.n_vendor_commands) { 3058 const struct nl80211_vendor_cmd_info *info; 3059 struct nlattr *nested; 3060 3061 nested = nla_nest_start_noflag(msg, 3062 NL80211_ATTR_VENDOR_DATA); 3063 if (!nested) 3064 goto nla_put_failure; 3065 3066 for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) { 3067 info = &rdev->wiphy.vendor_commands[i].info; 3068 if (nla_put(msg, i + 1, sizeof(*info), info)) 3069 goto nla_put_failure; 3070 } 3071 nla_nest_end(msg, nested); 3072 } 3073 3074 if (rdev->wiphy.n_vendor_events) { 3075 const struct nl80211_vendor_cmd_info *info; 3076 struct nlattr *nested; 3077 3078 nested = nla_nest_start_noflag(msg, 3079 NL80211_ATTR_VENDOR_EVENTS); 3080 if (!nested) 3081 goto nla_put_failure; 3082 3083 for (i = 0; i < rdev->wiphy.n_vendor_events; i++) { 3084 info = &rdev->wiphy.vendor_events[i]; 3085 if (nla_put(msg, i + 1, sizeof(*info), info)) 3086 goto nla_put_failure; 3087 } 3088 nla_nest_end(msg, nested); 3089 } 3090 state->split_start++; 3091 break; 3092 case 12: 3093 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH && 3094 nla_put_u8(msg, NL80211_ATTR_MAX_CSA_COUNTERS, 3095 rdev->wiphy.max_num_csa_counters)) 3096 goto nla_put_failure; 3097 3098 if (rdev->wiphy.regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED && 3099 nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG)) 3100 goto nla_put_failure; 3101 3102 if (rdev->wiphy.max_sched_scan_reqs && 3103 nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_MAX_REQS, 3104 rdev->wiphy.max_sched_scan_reqs)) 3105 goto nla_put_failure; 3106 3107 if (nla_put(msg, NL80211_ATTR_EXT_FEATURES, 3108 sizeof(rdev->wiphy.ext_features), 3109 rdev->wiphy.ext_features)) 3110 goto nla_put_failure; 3111 3112 if (rdev->wiphy.bss_param_support) { 3113 struct nlattr *nested; 3114 u32 parsup = rdev->wiphy.bss_param_support; 3115 3116 nested = nla_nest_start(msg, NL80211_ATTR_BSS_PARAM); 3117 if (!nested) 3118 goto nla_put_failure; 3119 3120 if ((parsup & WIPHY_BSS_PARAM_CTS_PROT) && 3121 nla_put_flag(msg, NL80211_ATTR_BSS_CTS_PROT)) 3122 goto nla_put_failure; 3123 if ((parsup & WIPHY_BSS_PARAM_SHORT_PREAMBLE) && 3124 nla_put_flag(msg, NL80211_ATTR_BSS_SHORT_PREAMBLE)) 3125 goto nla_put_failure; 3126 if ((parsup & WIPHY_BSS_PARAM_SHORT_SLOT_TIME) && 3127 nla_put_flag(msg, NL80211_ATTR_BSS_SHORT_SLOT_TIME)) 3128 goto nla_put_failure; 3129 if ((parsup & WIPHY_BSS_PARAM_BASIC_RATES) && 3130 nla_put_flag(msg, NL80211_ATTR_BSS_BASIC_RATES)) 3131 goto nla_put_failure; 3132 if ((parsup & WIPHY_BSS_PARAM_AP_ISOLATE) && 3133 nla_put_flag(msg, NL80211_ATTR_AP_ISOLATE)) 3134 goto nla_put_failure; 3135 if ((parsup & WIPHY_BSS_PARAM_HT_OPMODE) && 3136 nla_put_flag(msg, NL80211_ATTR_BSS_HT_OPMODE)) 3137 goto nla_put_failure; 3138 if ((parsup & WIPHY_BSS_PARAM_P2P_CTWINDOW) && 3139 nla_put_flag(msg, NL80211_ATTR_P2P_CTWINDOW)) 3140 goto nla_put_failure; 3141 if ((parsup & WIPHY_BSS_PARAM_P2P_OPPPS) && 3142 nla_put_flag(msg, NL80211_ATTR_P2P_OPPPS)) 3143 goto nla_put_failure; 3144 nla_nest_end(msg, nested); 3145 } 3146 if (rdev->wiphy.bss_select_support) { 3147 struct nlattr *nested; 3148 u32 bss_select_support = rdev->wiphy.bss_select_support; 3149 3150 nested = nla_nest_start_noflag(msg, 3151 NL80211_ATTR_BSS_SELECT); 3152 if (!nested) 3153 goto nla_put_failure; 3154 3155 i = 0; 3156 while (bss_select_support) { 3157 if ((bss_select_support & 1) && 3158 nla_put_flag(msg, i)) 3159 goto nla_put_failure; 3160 i++; 3161 bss_select_support >>= 1; 3162 } 3163 nla_nest_end(msg, nested); 3164 } 3165 3166 state->split_start++; 3167 break; 3168 case 13: 3169 if (rdev->wiphy.num_iftype_ext_capab && 3170 rdev->wiphy.iftype_ext_capab) { 3171 struct nlattr *nested_ext_capab, *nested; 3172 3173 nested = nla_nest_start_noflag(msg, 3174 NL80211_ATTR_IFTYPE_EXT_CAPA); 3175 if (!nested) 3176 goto nla_put_failure; 3177 3178 for (i = state->capa_start; 3179 i < rdev->wiphy.num_iftype_ext_capab; i++) { 3180 const struct wiphy_iftype_ext_capab *capab; 3181 3182 capab = &rdev->wiphy.iftype_ext_capab[i]; 3183 3184 nested_ext_capab = nla_nest_start_noflag(msg, 3185 i); 3186 if (!nested_ext_capab || 3187 nla_put_u32(msg, NL80211_ATTR_IFTYPE, 3188 capab->iftype) || 3189 nla_put(msg, NL80211_ATTR_EXT_CAPA, 3190 capab->extended_capabilities_len, 3191 capab->extended_capabilities) || 3192 nla_put(msg, NL80211_ATTR_EXT_CAPA_MASK, 3193 capab->extended_capabilities_len, 3194 capab->extended_capabilities_mask)) 3195 goto nla_put_failure; 3196 3197 if (rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_MLO && 3198 (nla_put_u16(msg, 3199 NL80211_ATTR_EML_CAPABILITY, 3200 capab->eml_capabilities) || 3201 nla_put_u16(msg, 3202 NL80211_ATTR_MLD_CAPA_AND_OPS, 3203 capab->mld_capa_and_ops))) 3204 goto nla_put_failure; 3205 3206 nla_nest_end(msg, nested_ext_capab); 3207 if (state->split) 3208 break; 3209 } 3210 nla_nest_end(msg, nested); 3211 if (i < rdev->wiphy.num_iftype_ext_capab) { 3212 state->capa_start = i + 1; 3213 break; 3214 } 3215 } 3216 3217 if (nla_put_u32(msg, NL80211_ATTR_BANDS, 3218 rdev->wiphy.nan_supported_bands)) 3219 goto nla_put_failure; 3220 3221 if (wiphy_ext_feature_isset(&rdev->wiphy, 3222 NL80211_EXT_FEATURE_TXQS)) { 3223 struct cfg80211_txq_stats txqstats = {}; 3224 int res; 3225 3226 res = rdev_get_txq_stats(rdev, NULL, &txqstats); 3227 if (!res && 3228 !nl80211_put_txq_stats(msg, &txqstats, 3229 NL80211_ATTR_TXQ_STATS)) 3230 goto nla_put_failure; 3231 3232 if (nla_put_u32(msg, NL80211_ATTR_TXQ_LIMIT, 3233 rdev->wiphy.txq_limit)) 3234 goto nla_put_failure; 3235 if (nla_put_u32(msg, NL80211_ATTR_TXQ_MEMORY_LIMIT, 3236 rdev->wiphy.txq_memory_limit)) 3237 goto nla_put_failure; 3238 if (nla_put_u32(msg, NL80211_ATTR_TXQ_QUANTUM, 3239 rdev->wiphy.txq_quantum)) 3240 goto nla_put_failure; 3241 } 3242 3243 state->split_start++; 3244 break; 3245 case 14: 3246 if (nl80211_send_pmsr_capa(rdev, msg)) 3247 goto nla_put_failure; 3248 3249 state->split_start++; 3250 break; 3251 case 15: 3252 if (rdev->wiphy.akm_suites && 3253 nla_put(msg, NL80211_ATTR_AKM_SUITES, 3254 sizeof(u32) * rdev->wiphy.n_akm_suites, 3255 rdev->wiphy.akm_suites)) 3256 goto nla_put_failure; 3257 3258 if (nl80211_put_iftype_akm_suites(rdev, msg)) 3259 goto nla_put_failure; 3260 3261 if (nl80211_put_tid_config_support(rdev, msg)) 3262 goto nla_put_failure; 3263 state->split_start++; 3264 break; 3265 case 16: 3266 if (nl80211_put_sar_specs(rdev, msg)) 3267 goto nla_put_failure; 3268 3269 if (nl80211_put_mbssid_support(&rdev->wiphy, msg)) 3270 goto nla_put_failure; 3271 3272 if (nla_put_u16(msg, NL80211_ATTR_MAX_NUM_AKM_SUITES, 3273 rdev->wiphy.max_num_akm_suites)) 3274 goto nla_put_failure; 3275 3276 if (rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_MLO) 3277 nla_put_flag(msg, NL80211_ATTR_MLO_SUPPORT); 3278 3279 if (rdev->wiphy.hw_timestamp_max_peers && 3280 nla_put_u16(msg, NL80211_ATTR_MAX_HW_TIMESTAMP_PEERS, 3281 rdev->wiphy.hw_timestamp_max_peers)) 3282 goto nla_put_failure; 3283 3284 state->split_start++; 3285 break; 3286 case 17: 3287 if (nl80211_put_radios(&rdev->wiphy, msg)) 3288 goto nla_put_failure; 3289 3290 state->split_start++; 3291 break; 3292 case 18: 3293 if (nl80211_put_nan_capa(&rdev->wiphy, msg)) 3294 goto nla_put_failure; 3295 3296 /* done */ 3297 state->split_start = 0; 3298 break; 3299 } 3300 finish: 3301 genlmsg_end(msg, hdr); 3302 return 0; 3303 3304 nla_put_failure: 3305 genlmsg_cancel(msg, hdr); 3306 return -EMSGSIZE; 3307 } 3308 3309 static int nl80211_dump_wiphy_parse(struct sk_buff *skb, 3310 struct netlink_callback *cb, 3311 struct nl80211_dump_wiphy_state *state) 3312 { 3313 struct nlattr **tb = kcalloc(NUM_NL80211_ATTR, sizeof(*tb), GFP_KERNEL); 3314 int ret; 3315 3316 if (!tb) 3317 return -ENOMEM; 3318 3319 ret = nlmsg_parse_deprecated(cb->nlh, 3320 GENL_HDRLEN + nl80211_fam.hdrsize, 3321 tb, nl80211_fam.maxattr, 3322 nl80211_policy, NULL); 3323 /* ignore parse errors for backward compatibility */ 3324 if (ret) { 3325 ret = 0; 3326 goto out; 3327 } 3328 3329 state->split = tb[NL80211_ATTR_SPLIT_WIPHY_DUMP]; 3330 if (tb[NL80211_ATTR_WIPHY]) 3331 state->filter_wiphy = nla_get_u32(tb[NL80211_ATTR_WIPHY]); 3332 if (tb[NL80211_ATTR_WDEV]) 3333 state->filter_wiphy = nla_get_u64(tb[NL80211_ATTR_WDEV]) >> 32; 3334 if (tb[NL80211_ATTR_IFINDEX]) { 3335 struct net_device *netdev; 3336 struct cfg80211_registered_device *rdev; 3337 int ifidx = nla_get_u32(tb[NL80211_ATTR_IFINDEX]); 3338 3339 netdev = __dev_get_by_index(sock_net(skb->sk), ifidx); 3340 if (!netdev) { 3341 ret = -ENODEV; 3342 goto out; 3343 } 3344 if (netdev->ieee80211_ptr) { 3345 rdev = wiphy_to_rdev( 3346 netdev->ieee80211_ptr->wiphy); 3347 state->filter_wiphy = rdev->wiphy_idx; 3348 } 3349 } 3350 3351 ret = 0; 3352 out: 3353 kfree(tb); 3354 return ret; 3355 } 3356 3357 static int nl80211_dump_wiphy(struct sk_buff *skb, struct netlink_callback *cb) 3358 { 3359 int idx = 0, ret; 3360 struct nl80211_dump_wiphy_state *state = (void *)cb->args[0]; 3361 struct cfg80211_registered_device *rdev; 3362 3363 rtnl_lock(); 3364 if (!state) { 3365 state = kzalloc(sizeof(*state), GFP_KERNEL); 3366 if (!state) { 3367 rtnl_unlock(); 3368 return -ENOMEM; 3369 } 3370 state->filter_wiphy = -1; 3371 ret = nl80211_dump_wiphy_parse(skb, cb, state); 3372 if (ret) { 3373 kfree(state); 3374 rtnl_unlock(); 3375 return ret; 3376 } 3377 cb->args[0] = (long)state; 3378 } 3379 3380 for_each_rdev(rdev) { 3381 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk))) 3382 continue; 3383 if (++idx <= state->start) 3384 continue; 3385 if (state->filter_wiphy != -1 && 3386 state->filter_wiphy != rdev->wiphy_idx) 3387 continue; 3388 wiphy_lock(&rdev->wiphy); 3389 /* attempt to fit multiple wiphy data chunks into the skb */ 3390 do { 3391 ret = nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY, 3392 skb, 3393 NETLINK_CB(cb->skb).portid, 3394 cb->nlh->nlmsg_seq, 3395 NLM_F_MULTI, state); 3396 if (ret < 0) { 3397 /* 3398 * If sending the wiphy data didn't fit (ENOBUFS 3399 * or EMSGSIZE returned), this SKB is still 3400 * empty (so it's not too big because another 3401 * wiphy dataset is already in the skb) and 3402 * we've not tried to adjust the dump allocation 3403 * yet ... then adjust the alloc size to be 3404 * bigger, and return 1 but with the empty skb. 3405 * This results in an empty message being RX'ed 3406 * in userspace, but that is ignored. 3407 * 3408 * We can then retry with the larger buffer. 3409 */ 3410 if ((ret == -ENOBUFS || ret == -EMSGSIZE) && 3411 !skb->len && !state->split && 3412 cb->min_dump_alloc < 4096) { 3413 cb->min_dump_alloc = 4096; 3414 state->split_start = 0; 3415 wiphy_unlock(&rdev->wiphy); 3416 rtnl_unlock(); 3417 return 1; 3418 } 3419 idx--; 3420 break; 3421 } 3422 } while (state->split_start > 0); 3423 wiphy_unlock(&rdev->wiphy); 3424 break; 3425 } 3426 rtnl_unlock(); 3427 3428 state->start = idx; 3429 3430 return skb->len; 3431 } 3432 3433 static int nl80211_dump_wiphy_done(struct netlink_callback *cb) 3434 { 3435 kfree((void *)cb->args[0]); 3436 return 0; 3437 } 3438 3439 static int nl80211_get_wiphy(struct sk_buff *skb, struct genl_info *info) 3440 { 3441 struct sk_buff *msg; 3442 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 3443 struct nl80211_dump_wiphy_state state = {}; 3444 3445 msg = nlmsg_new(4096, GFP_KERNEL); 3446 if (!msg) 3447 return -ENOMEM; 3448 3449 if (nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY, msg, 3450 info->snd_portid, info->snd_seq, 0, 3451 &state) < 0) { 3452 nlmsg_free(msg); 3453 return -ENOBUFS; 3454 } 3455 3456 return genlmsg_reply(msg, info); 3457 } 3458 3459 static const struct nla_policy txq_params_policy[NL80211_TXQ_ATTR_MAX + 1] = { 3460 [NL80211_TXQ_ATTR_QUEUE] = { .type = NLA_U8 }, 3461 [NL80211_TXQ_ATTR_TXOP] = { .type = NLA_U16 }, 3462 [NL80211_TXQ_ATTR_CWMIN] = { .type = NLA_U16 }, 3463 [NL80211_TXQ_ATTR_CWMAX] = { .type = NLA_U16 }, 3464 [NL80211_TXQ_ATTR_AIFS] = { .type = NLA_U8 }, 3465 }; 3466 3467 static int parse_txq_params(struct nlattr *tb[], 3468 struct ieee80211_txq_params *txq_params) 3469 { 3470 u8 ac; 3471 3472 if (!tb[NL80211_TXQ_ATTR_AC] || !tb[NL80211_TXQ_ATTR_TXOP] || 3473 !tb[NL80211_TXQ_ATTR_CWMIN] || !tb[NL80211_TXQ_ATTR_CWMAX] || 3474 !tb[NL80211_TXQ_ATTR_AIFS]) 3475 return -EINVAL; 3476 3477 ac = nla_get_u8(tb[NL80211_TXQ_ATTR_AC]); 3478 txq_params->txop = nla_get_u16(tb[NL80211_TXQ_ATTR_TXOP]); 3479 txq_params->cwmin = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMIN]); 3480 txq_params->cwmax = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMAX]); 3481 txq_params->aifs = nla_get_u8(tb[NL80211_TXQ_ATTR_AIFS]); 3482 3483 if (ac >= NL80211_NUM_ACS) 3484 return -EINVAL; 3485 txq_params->ac = array_index_nospec(ac, NL80211_NUM_ACS); 3486 return 0; 3487 } 3488 3489 static bool nl80211_can_set_dev_channel(struct wireless_dev *wdev) 3490 { 3491 /* 3492 * You can only set the channel explicitly for some interfaces, 3493 * most have their channel managed via their respective 3494 * "establish a connection" command (connect, join, ...) 3495 * 3496 * For AP/GO and mesh mode, the channel can be set with the 3497 * channel userspace API, but is only stored and passed to the 3498 * low-level driver when the AP starts or the mesh is joined. 3499 * This is for backward compatibility, userspace can also give 3500 * the channel in the start-ap or join-mesh commands instead. 3501 * 3502 * Monitors are special as they are normally slaved to 3503 * whatever else is going on, so they have their own special 3504 * operation to set the monitor channel if possible. 3505 */ 3506 return !wdev || 3507 wdev->iftype == NL80211_IFTYPE_AP || 3508 wdev->iftype == NL80211_IFTYPE_MESH_POINT || 3509 wdev->iftype == NL80211_IFTYPE_MONITOR || 3510 wdev->iftype == NL80211_IFTYPE_P2P_GO; 3511 } 3512 3513 static int _nl80211_parse_chandef(struct cfg80211_registered_device *rdev, 3514 struct genl_info *info, bool monitor, 3515 struct cfg80211_chan_def *chandef) 3516 { 3517 struct netlink_ext_ack *extack = info->extack; 3518 struct nlattr **attrs = info->attrs; 3519 u32 control_freq; 3520 3521 if (!attrs[NL80211_ATTR_WIPHY_FREQ]) { 3522 NL_SET_ERR_MSG_ATTR(extack, attrs[NL80211_ATTR_WIPHY_FREQ], 3523 "Frequency is missing"); 3524 return -EINVAL; 3525 } 3526 3527 control_freq = MHZ_TO_KHZ( 3528 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ])); 3529 if (info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET]) 3530 control_freq += 3531 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET]); 3532 3533 memset(chandef, 0, sizeof(*chandef)); 3534 chandef->chan = ieee80211_get_channel_khz(&rdev->wiphy, control_freq); 3535 chandef->width = NL80211_CHAN_WIDTH_20_NOHT; 3536 chandef->center_freq1 = KHZ_TO_MHZ(control_freq); 3537 chandef->freq1_offset = control_freq % 1000; 3538 chandef->center_freq2 = 0; 3539 chandef->s1g_primary_2mhz = false; 3540 3541 if (!chandef->chan) { 3542 NL_SET_ERR_MSG_ATTR(extack, attrs[NL80211_ATTR_WIPHY_FREQ], 3543 "Unknown channel"); 3544 return -EINVAL; 3545 } 3546 3547 if (attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) { 3548 enum nl80211_channel_type chantype; 3549 3550 chantype = nla_get_u32(attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]); 3551 3552 switch (chantype) { 3553 case NL80211_CHAN_NO_HT: 3554 case NL80211_CHAN_HT20: 3555 case NL80211_CHAN_HT40PLUS: 3556 case NL80211_CHAN_HT40MINUS: 3557 cfg80211_chandef_create(chandef, chandef->chan, 3558 chantype); 3559 /* user input for center_freq is incorrect */ 3560 if (attrs[NL80211_ATTR_CENTER_FREQ1] && 3561 chandef->center_freq1 != nla_get_u32(attrs[NL80211_ATTR_CENTER_FREQ1])) { 3562 NL_SET_ERR_MSG_ATTR(extack, 3563 attrs[NL80211_ATTR_CENTER_FREQ1], 3564 "bad center frequency 1"); 3565 return -EINVAL; 3566 } 3567 /* center_freq2 must be zero */ 3568 if (attrs[NL80211_ATTR_CENTER_FREQ2] && 3569 nla_get_u32(attrs[NL80211_ATTR_CENTER_FREQ2])) { 3570 NL_SET_ERR_MSG_ATTR(extack, 3571 attrs[NL80211_ATTR_CENTER_FREQ2], 3572 "center frequency 2 can't be used"); 3573 return -EINVAL; 3574 } 3575 break; 3576 default: 3577 NL_SET_ERR_MSG_ATTR(extack, 3578 attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE], 3579 "invalid channel type"); 3580 return -EINVAL; 3581 } 3582 } else if (attrs[NL80211_ATTR_CHANNEL_WIDTH]) { 3583 chandef->width = nla_get_u32(attrs[NL80211_ATTR_CHANNEL_WIDTH]); 3584 if (attrs[NL80211_ATTR_CENTER_FREQ1]) { 3585 chandef->center_freq1 = 3586 nla_get_u32(attrs[NL80211_ATTR_CENTER_FREQ1]); 3587 chandef->freq1_offset = nla_get_u32_default( 3588 attrs[NL80211_ATTR_CENTER_FREQ1_OFFSET], 0); 3589 } 3590 3591 if (attrs[NL80211_ATTR_CENTER_FREQ2]) 3592 chandef->center_freq2 = 3593 nla_get_u32(attrs[NL80211_ATTR_CENTER_FREQ2]); 3594 3595 chandef->s1g_primary_2mhz = nla_get_flag( 3596 attrs[NL80211_ATTR_S1G_PRIMARY_2MHZ]); 3597 } 3598 3599 if (info->attrs[NL80211_ATTR_WIPHY_EDMG_CHANNELS]) { 3600 chandef->edmg.channels = 3601 nla_get_u8(info->attrs[NL80211_ATTR_WIPHY_EDMG_CHANNELS]); 3602 3603 if (info->attrs[NL80211_ATTR_WIPHY_EDMG_BW_CONFIG]) 3604 chandef->edmg.bw_config = 3605 nla_get_u8(info->attrs[NL80211_ATTR_WIPHY_EDMG_BW_CONFIG]); 3606 } else { 3607 chandef->edmg.bw_config = 0; 3608 chandef->edmg.channels = 0; 3609 } 3610 3611 if (info->attrs[NL80211_ATTR_PUNCT_BITMAP]) { 3612 chandef->punctured = 3613 nla_get_u32(info->attrs[NL80211_ATTR_PUNCT_BITMAP]); 3614 3615 if (chandef->punctured && 3616 !wiphy_ext_feature_isset(&rdev->wiphy, 3617 NL80211_EXT_FEATURE_PUNCT)) { 3618 NL_SET_ERR_MSG(extack, 3619 "driver doesn't support puncturing"); 3620 return -EINVAL; 3621 } 3622 } 3623 3624 if (!cfg80211_chandef_valid(chandef)) { 3625 NL_SET_ERR_MSG(extack, "invalid channel definition"); 3626 return -EINVAL; 3627 } 3628 3629 if (!_cfg80211_chandef_usable(&rdev->wiphy, chandef, 3630 IEEE80211_CHAN_DISABLED, 3631 monitor ? IEEE80211_CHAN_CAN_MONITOR : 0)) { 3632 NL_SET_ERR_MSG(extack, "(extension) channel is disabled"); 3633 return -EINVAL; 3634 } 3635 3636 if ((chandef->width == NL80211_CHAN_WIDTH_5 || 3637 chandef->width == NL80211_CHAN_WIDTH_10) && 3638 !(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ)) { 3639 NL_SET_ERR_MSG(extack, "5/10 MHz not supported"); 3640 return -EINVAL; 3641 } 3642 3643 return 0; 3644 } 3645 3646 int nl80211_parse_chandef(struct cfg80211_registered_device *rdev, 3647 struct genl_info *info, 3648 struct cfg80211_chan_def *chandef) 3649 { 3650 return _nl80211_parse_chandef(rdev, info, false, chandef); 3651 } 3652 3653 static int __nl80211_set_channel(struct cfg80211_registered_device *rdev, 3654 struct net_device *dev, 3655 struct genl_info *info, 3656 int _link_id) 3657 { 3658 struct cfg80211_chan_def chandef; 3659 int result; 3660 enum nl80211_iftype iftype = NL80211_IFTYPE_MONITOR; 3661 struct wireless_dev *wdev = NULL; 3662 int link_id = _link_id; 3663 3664 if (dev) 3665 wdev = dev->ieee80211_ptr; 3666 if (!nl80211_can_set_dev_channel(wdev)) 3667 return -EOPNOTSUPP; 3668 if (wdev) 3669 iftype = wdev->iftype; 3670 3671 if (link_id < 0) { 3672 if (wdev && wdev->valid_links) 3673 return -EINVAL; 3674 link_id = 0; 3675 } 3676 3677 result = _nl80211_parse_chandef(rdev, info, 3678 iftype == NL80211_IFTYPE_MONITOR, 3679 &chandef); 3680 if (result) 3681 return result; 3682 3683 switch (iftype) { 3684 case NL80211_IFTYPE_AP: 3685 case NL80211_IFTYPE_P2P_GO: 3686 if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &chandef, 3687 iftype)) 3688 return -EINVAL; 3689 if (wdev->links[link_id].ap.beacon_interval) { 3690 struct ieee80211_channel *cur_chan; 3691 3692 if (!dev || !rdev->ops->set_ap_chanwidth || 3693 !(rdev->wiphy.features & 3694 NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE)) 3695 return -EBUSY; 3696 3697 /* Only allow dynamic channel width changes */ 3698 cur_chan = wdev->links[link_id].ap.chandef.chan; 3699 if (chandef.chan != cur_chan) 3700 return -EBUSY; 3701 3702 /* only allow this for regular channel widths */ 3703 switch (wdev->links[link_id].ap.chandef.width) { 3704 case NL80211_CHAN_WIDTH_20_NOHT: 3705 case NL80211_CHAN_WIDTH_20: 3706 case NL80211_CHAN_WIDTH_40: 3707 case NL80211_CHAN_WIDTH_80: 3708 case NL80211_CHAN_WIDTH_80P80: 3709 case NL80211_CHAN_WIDTH_160: 3710 case NL80211_CHAN_WIDTH_320: 3711 break; 3712 default: 3713 return -EINVAL; 3714 } 3715 3716 switch (chandef.width) { 3717 case NL80211_CHAN_WIDTH_20_NOHT: 3718 case NL80211_CHAN_WIDTH_20: 3719 case NL80211_CHAN_WIDTH_40: 3720 case NL80211_CHAN_WIDTH_80: 3721 case NL80211_CHAN_WIDTH_80P80: 3722 case NL80211_CHAN_WIDTH_160: 3723 case NL80211_CHAN_WIDTH_320: 3724 break; 3725 default: 3726 return -EINVAL; 3727 } 3728 3729 result = rdev_set_ap_chanwidth(rdev, dev, link_id, 3730 &chandef); 3731 if (result) 3732 return result; 3733 wdev->links[link_id].ap.chandef = chandef; 3734 } else { 3735 wdev->u.ap.preset_chandef = chandef; 3736 } 3737 return 0; 3738 case NL80211_IFTYPE_MESH_POINT: 3739 return cfg80211_set_mesh_channel(rdev, wdev, &chandef); 3740 case NL80211_IFTYPE_MONITOR: 3741 return cfg80211_set_monitor_channel(rdev, dev, &chandef); 3742 default: 3743 break; 3744 } 3745 3746 return -EINVAL; 3747 } 3748 3749 static int nl80211_set_channel(struct sk_buff *skb, struct genl_info *info) 3750 { 3751 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 3752 int link_id = nl80211_link_id_or_invalid(info->attrs); 3753 struct net_device *netdev = info->user_ptr[1]; 3754 3755 return __nl80211_set_channel(rdev, netdev, info, link_id); 3756 } 3757 3758 static int nl80211_set_wiphy_radio(struct genl_info *info, 3759 struct cfg80211_registered_device *rdev, 3760 int radio_idx) 3761 { 3762 u32 rts_threshold = 0, old_rts, changed = 0; 3763 int result; 3764 3765 if (!rdev->ops->set_wiphy_params) 3766 return -EOPNOTSUPP; 3767 3768 if (info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]) { 3769 rts_threshold = nla_get_u32( 3770 info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]); 3771 changed |= WIPHY_PARAM_RTS_THRESHOLD; 3772 } 3773 3774 old_rts = rdev->wiphy.radio_cfg[radio_idx].rts_threshold; 3775 3776 rdev->wiphy.radio_cfg[radio_idx].rts_threshold = rts_threshold; 3777 3778 result = rdev_set_wiphy_params(rdev, radio_idx, changed); 3779 if (result) 3780 rdev->wiphy.radio_cfg[radio_idx].rts_threshold = old_rts; 3781 3782 return 0; 3783 } 3784 3785 static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info) 3786 { 3787 struct cfg80211_registered_device *rdev = NULL; 3788 struct net_device *netdev = NULL; 3789 struct wireless_dev *wdev; 3790 int result = 0, rem_txq_params = 0; 3791 struct nlattr *nl_txq_params; 3792 u32 changed; 3793 u8 retry_short = 0, retry_long = 0; 3794 u32 frag_threshold = 0, rts_threshold = 0; 3795 u8 coverage_class = 0; 3796 u32 txq_limit = 0, txq_memory_limit = 0, txq_quantum = 0; 3797 int radio_idx = -1; 3798 3799 rtnl_lock(); 3800 /* 3801 * Try to find the wiphy and netdev. Normally this 3802 * function shouldn't need the netdev, but this is 3803 * done for backward compatibility -- previously 3804 * setting the channel was done per wiphy, but now 3805 * it is per netdev. Previous userland like hostapd 3806 * also passed a netdev to set_wiphy, so that it is 3807 * possible to let that go to the right netdev! 3808 */ 3809 3810 if (info->attrs[NL80211_ATTR_IFINDEX]) { 3811 int ifindex = nla_get_u32(info->attrs[NL80211_ATTR_IFINDEX]); 3812 3813 netdev = __dev_get_by_index(genl_info_net(info), ifindex); 3814 if (netdev && netdev->ieee80211_ptr) 3815 rdev = wiphy_to_rdev(netdev->ieee80211_ptr->wiphy); 3816 else 3817 netdev = NULL; 3818 } 3819 3820 if (!netdev) { 3821 rdev = __cfg80211_rdev_from_attrs(genl_info_net(info), 3822 info->attrs); 3823 if (IS_ERR(rdev)) { 3824 rtnl_unlock(); 3825 return PTR_ERR(rdev); 3826 } 3827 wdev = NULL; 3828 netdev = NULL; 3829 result = 0; 3830 } else 3831 wdev = netdev->ieee80211_ptr; 3832 3833 guard(wiphy)(&rdev->wiphy); 3834 3835 /* 3836 * end workaround code, by now the rdev is available 3837 * and locked, and wdev may or may not be NULL. 3838 */ 3839 3840 if (info->attrs[NL80211_ATTR_WIPHY_NAME]) 3841 result = cfg80211_dev_rename( 3842 rdev, nla_data(info->attrs[NL80211_ATTR_WIPHY_NAME])); 3843 rtnl_unlock(); 3844 3845 if (result) 3846 return result; 3847 3848 if (info->attrs[NL80211_ATTR_WIPHY_RADIO_INDEX]) { 3849 /* Radio idx is not expected for non-multi radio wiphy */ 3850 if (rdev->wiphy.n_radio <= 0) 3851 return -EINVAL; 3852 3853 radio_idx = nla_get_u8( 3854 info->attrs[NL80211_ATTR_WIPHY_RADIO_INDEX]); 3855 if (radio_idx >= rdev->wiphy.n_radio) 3856 return -EINVAL; 3857 3858 return nl80211_set_wiphy_radio(info, rdev, radio_idx); 3859 } 3860 3861 if (info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS]) { 3862 struct ieee80211_txq_params txq_params; 3863 struct nlattr *tb[NL80211_TXQ_ATTR_MAX + 1]; 3864 3865 if (!rdev->ops->set_txq_params) 3866 return -EOPNOTSUPP; 3867 3868 if (!netdev) 3869 return -EINVAL; 3870 3871 if (netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP && 3872 netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) 3873 return -EINVAL; 3874 3875 if (!netif_running(netdev)) 3876 return -ENETDOWN; 3877 3878 nla_for_each_nested(nl_txq_params, 3879 info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS], 3880 rem_txq_params) { 3881 result = nla_parse_nested_deprecated(tb, 3882 NL80211_TXQ_ATTR_MAX, 3883 nl_txq_params, 3884 txq_params_policy, 3885 info->extack); 3886 if (result) 3887 return result; 3888 3889 result = parse_txq_params(tb, &txq_params); 3890 if (result) 3891 return result; 3892 3893 txq_params.link_id = 3894 nl80211_link_id_or_invalid(info->attrs); 3895 3896 if (txq_params.link_id >= 0 && 3897 !(netdev->ieee80211_ptr->valid_links & 3898 BIT(txq_params.link_id))) 3899 result = -ENOLINK; 3900 else if (txq_params.link_id >= 0 && 3901 !netdev->ieee80211_ptr->valid_links) 3902 result = -EINVAL; 3903 else 3904 result = rdev_set_txq_params(rdev, netdev, 3905 &txq_params); 3906 if (result) 3907 return result; 3908 } 3909 } 3910 3911 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) { 3912 int link_id = nl80211_link_id_or_invalid(info->attrs); 3913 3914 if (wdev) { 3915 result = __nl80211_set_channel( 3916 rdev, 3917 nl80211_can_set_dev_channel(wdev) ? netdev : NULL, 3918 info, link_id); 3919 } else { 3920 result = __nl80211_set_channel(rdev, netdev, info, link_id); 3921 } 3922 3923 if (result) 3924 return result; 3925 } 3926 3927 if (info->attrs[NL80211_ATTR_WIPHY_TX_POWER_SETTING]) { 3928 struct wireless_dev *txp_wdev = wdev; 3929 enum nl80211_tx_power_setting type; 3930 int idx, mbm = 0; 3931 3932 if (!(rdev->wiphy.features & NL80211_FEATURE_VIF_TXPOWER)) 3933 txp_wdev = NULL; 3934 3935 if (!rdev->ops->set_tx_power) 3936 return -EOPNOTSUPP; 3937 3938 idx = NL80211_ATTR_WIPHY_TX_POWER_SETTING; 3939 type = nla_get_u32(info->attrs[idx]); 3940 3941 if (!info->attrs[NL80211_ATTR_WIPHY_TX_POWER_LEVEL] && 3942 (type != NL80211_TX_POWER_AUTOMATIC)) 3943 return -EINVAL; 3944 3945 if (type != NL80211_TX_POWER_AUTOMATIC) { 3946 idx = NL80211_ATTR_WIPHY_TX_POWER_LEVEL; 3947 mbm = nla_get_u32(info->attrs[idx]); 3948 } 3949 3950 result = rdev_set_tx_power(rdev, txp_wdev, radio_idx, type, 3951 mbm); 3952 if (result) 3953 return result; 3954 } 3955 3956 if (info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX] && 3957 info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]) { 3958 u32 tx_ant, rx_ant; 3959 3960 if ((!rdev->wiphy.available_antennas_tx && 3961 !rdev->wiphy.available_antennas_rx) || 3962 !rdev->ops->set_antenna) 3963 return -EOPNOTSUPP; 3964 3965 tx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX]); 3966 rx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]); 3967 3968 /* reject antenna configurations which don't match the 3969 * available antenna masks, except for the "all" mask */ 3970 if ((~tx_ant && (tx_ant & ~rdev->wiphy.available_antennas_tx)) || 3971 (~rx_ant && (rx_ant & ~rdev->wiphy.available_antennas_rx))) 3972 return -EINVAL; 3973 3974 tx_ant = tx_ant & rdev->wiphy.available_antennas_tx; 3975 rx_ant = rx_ant & rdev->wiphy.available_antennas_rx; 3976 3977 result = rdev_set_antenna(rdev, radio_idx, tx_ant, rx_ant); 3978 if (result) 3979 return result; 3980 } 3981 3982 changed = 0; 3983 3984 if (info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]) { 3985 retry_short = nla_get_u8( 3986 info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]); 3987 3988 changed |= WIPHY_PARAM_RETRY_SHORT; 3989 } 3990 3991 if (info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]) { 3992 retry_long = nla_get_u8( 3993 info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]); 3994 3995 changed |= WIPHY_PARAM_RETRY_LONG; 3996 } 3997 3998 if (info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]) { 3999 frag_threshold = nla_get_u32( 4000 info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]); 4001 if (frag_threshold < 256) 4002 return -EINVAL; 4003 4004 if (frag_threshold != (u32) -1) { 4005 /* 4006 * Fragments (apart from the last one) are required to 4007 * have even length. Make the fragmentation code 4008 * simpler by stripping LSB should someone try to use 4009 * odd threshold value. 4010 */ 4011 frag_threshold &= ~0x1; 4012 } 4013 changed |= WIPHY_PARAM_FRAG_THRESHOLD; 4014 } 4015 4016 if (info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]) { 4017 rts_threshold = nla_get_u32( 4018 info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]); 4019 changed |= WIPHY_PARAM_RTS_THRESHOLD; 4020 } 4021 4022 if (info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]) { 4023 if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK]) 4024 return -EINVAL; 4025 4026 coverage_class = nla_get_u8( 4027 info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]); 4028 changed |= WIPHY_PARAM_COVERAGE_CLASS; 4029 } 4030 4031 if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK]) { 4032 if (!(rdev->wiphy.features & NL80211_FEATURE_ACKTO_ESTIMATION)) 4033 return -EOPNOTSUPP; 4034 4035 changed |= WIPHY_PARAM_DYN_ACK; 4036 } 4037 4038 if (info->attrs[NL80211_ATTR_TXQ_LIMIT]) { 4039 if (!wiphy_ext_feature_isset(&rdev->wiphy, 4040 NL80211_EXT_FEATURE_TXQS)) 4041 return -EOPNOTSUPP; 4042 4043 txq_limit = nla_get_u32( 4044 info->attrs[NL80211_ATTR_TXQ_LIMIT]); 4045 changed |= WIPHY_PARAM_TXQ_LIMIT; 4046 } 4047 4048 if (info->attrs[NL80211_ATTR_TXQ_MEMORY_LIMIT]) { 4049 if (!wiphy_ext_feature_isset(&rdev->wiphy, 4050 NL80211_EXT_FEATURE_TXQS)) 4051 return -EOPNOTSUPP; 4052 4053 txq_memory_limit = nla_get_u32( 4054 info->attrs[NL80211_ATTR_TXQ_MEMORY_LIMIT]); 4055 changed |= WIPHY_PARAM_TXQ_MEMORY_LIMIT; 4056 } 4057 4058 if (info->attrs[NL80211_ATTR_TXQ_QUANTUM]) { 4059 if (!wiphy_ext_feature_isset(&rdev->wiphy, 4060 NL80211_EXT_FEATURE_TXQS)) 4061 return -EOPNOTSUPP; 4062 4063 txq_quantum = nla_get_u32( 4064 info->attrs[NL80211_ATTR_TXQ_QUANTUM]); 4065 changed |= WIPHY_PARAM_TXQ_QUANTUM; 4066 } 4067 4068 if (changed) { 4069 u8 old_retry_short, old_retry_long; 4070 u32 old_frag_threshold, old_rts_threshold; 4071 u8 old_coverage_class, i; 4072 u32 old_txq_limit, old_txq_memory_limit, old_txq_quantum; 4073 u32 *old_radio_rts_threshold = NULL; 4074 4075 if (!rdev->ops->set_wiphy_params) 4076 return -EOPNOTSUPP; 4077 4078 if (rdev->wiphy.n_radio) { 4079 old_radio_rts_threshold = kcalloc(rdev->wiphy.n_radio, 4080 sizeof(u32), 4081 GFP_KERNEL); 4082 if (!old_radio_rts_threshold) 4083 return -ENOMEM; 4084 } 4085 4086 old_retry_short = rdev->wiphy.retry_short; 4087 old_retry_long = rdev->wiphy.retry_long; 4088 old_frag_threshold = rdev->wiphy.frag_threshold; 4089 old_rts_threshold = rdev->wiphy.rts_threshold; 4090 if (old_radio_rts_threshold) { 4091 for (i = 0 ; i < rdev->wiphy.n_radio; i++) 4092 old_radio_rts_threshold[i] = 4093 rdev->wiphy.radio_cfg[i].rts_threshold; 4094 } 4095 old_coverage_class = rdev->wiphy.coverage_class; 4096 old_txq_limit = rdev->wiphy.txq_limit; 4097 old_txq_memory_limit = rdev->wiphy.txq_memory_limit; 4098 old_txq_quantum = rdev->wiphy.txq_quantum; 4099 4100 if (changed & WIPHY_PARAM_RETRY_SHORT) 4101 rdev->wiphy.retry_short = retry_short; 4102 if (changed & WIPHY_PARAM_RETRY_LONG) 4103 rdev->wiphy.retry_long = retry_long; 4104 if (changed & WIPHY_PARAM_FRAG_THRESHOLD) 4105 rdev->wiphy.frag_threshold = frag_threshold; 4106 if ((changed & WIPHY_PARAM_RTS_THRESHOLD) && 4107 old_radio_rts_threshold) { 4108 rdev->wiphy.rts_threshold = rts_threshold; 4109 for (i = 0 ; i < rdev->wiphy.n_radio; i++) 4110 rdev->wiphy.radio_cfg[i].rts_threshold = 4111 rdev->wiphy.rts_threshold; 4112 } 4113 if (changed & WIPHY_PARAM_COVERAGE_CLASS) 4114 rdev->wiphy.coverage_class = coverage_class; 4115 if (changed & WIPHY_PARAM_TXQ_LIMIT) 4116 rdev->wiphy.txq_limit = txq_limit; 4117 if (changed & WIPHY_PARAM_TXQ_MEMORY_LIMIT) 4118 rdev->wiphy.txq_memory_limit = txq_memory_limit; 4119 if (changed & WIPHY_PARAM_TXQ_QUANTUM) 4120 rdev->wiphy.txq_quantum = txq_quantum; 4121 4122 result = rdev_set_wiphy_params(rdev, radio_idx, changed); 4123 if (result) { 4124 rdev->wiphy.retry_short = old_retry_short; 4125 rdev->wiphy.retry_long = old_retry_long; 4126 rdev->wiphy.frag_threshold = old_frag_threshold; 4127 rdev->wiphy.rts_threshold = old_rts_threshold; 4128 if (old_radio_rts_threshold) { 4129 for (i = 0 ; i < rdev->wiphy.n_radio; i++) 4130 rdev->wiphy.radio_cfg[i].rts_threshold = 4131 old_radio_rts_threshold[i]; 4132 } 4133 rdev->wiphy.coverage_class = old_coverage_class; 4134 rdev->wiphy.txq_limit = old_txq_limit; 4135 rdev->wiphy.txq_memory_limit = old_txq_memory_limit; 4136 rdev->wiphy.txq_quantum = old_txq_quantum; 4137 } 4138 4139 if (old_rts_threshold) 4140 kfree(old_radio_rts_threshold); 4141 return result; 4142 } 4143 4144 return 0; 4145 } 4146 4147 int nl80211_send_chandef(struct sk_buff *msg, const struct cfg80211_chan_def *chandef) 4148 { 4149 if (WARN_ON(!cfg80211_chandef_valid(chandef))) 4150 return -EINVAL; 4151 4152 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, 4153 chandef->chan->center_freq)) 4154 return -ENOBUFS; 4155 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ_OFFSET, 4156 chandef->chan->freq_offset)) 4157 return -ENOBUFS; 4158 switch (chandef->width) { 4159 case NL80211_CHAN_WIDTH_20_NOHT: 4160 case NL80211_CHAN_WIDTH_20: 4161 case NL80211_CHAN_WIDTH_40: 4162 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE, 4163 cfg80211_get_chandef_type(chandef))) 4164 return -ENOBUFS; 4165 break; 4166 default: 4167 break; 4168 } 4169 if (nla_put_u32(msg, NL80211_ATTR_CHANNEL_WIDTH, chandef->width)) 4170 return -ENOBUFS; 4171 if (nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ1, chandef->center_freq1)) 4172 return -ENOBUFS; 4173 if (chandef->center_freq2 && 4174 nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ2, chandef->center_freq2)) 4175 return -ENOBUFS; 4176 if (chandef->punctured && 4177 nla_put_u32(msg, NL80211_ATTR_PUNCT_BITMAP, chandef->punctured)) 4178 return -ENOBUFS; 4179 4180 return 0; 4181 } 4182 EXPORT_SYMBOL(nl80211_send_chandef); 4183 4184 static int nl80211_send_iface(struct sk_buff *msg, u32 portid, u32 seq, int flags, 4185 struct cfg80211_registered_device *rdev, 4186 struct wireless_dev *wdev, 4187 enum nl80211_commands cmd) 4188 { 4189 struct net_device *dev = wdev->netdev; 4190 void *hdr; 4191 4192 lockdep_assert_wiphy(&rdev->wiphy); 4193 4194 WARN_ON(cmd != NL80211_CMD_NEW_INTERFACE && 4195 cmd != NL80211_CMD_DEL_INTERFACE && 4196 cmd != NL80211_CMD_SET_INTERFACE); 4197 4198 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd); 4199 if (!hdr) 4200 return -1; 4201 4202 if (dev && 4203 (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) || 4204 nla_put_string(msg, NL80211_ATTR_IFNAME, dev->name))) 4205 goto nla_put_failure; 4206 4207 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 4208 nla_put_u32(msg, NL80211_ATTR_IFTYPE, wdev->iftype) || 4209 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev), 4210 NL80211_ATTR_PAD) || 4211 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, wdev_address(wdev)) || 4212 nla_put_u32(msg, NL80211_ATTR_GENERATION, 4213 rdev->devlist_generation ^ 4214 (cfg80211_rdev_list_generation << 2)) || 4215 nla_put_u8(msg, NL80211_ATTR_4ADDR, wdev->use_4addr) || 4216 nla_put_u32(msg, NL80211_ATTR_VIF_RADIO_MASK, wdev->radio_mask)) 4217 goto nla_put_failure; 4218 4219 if (rdev->ops->get_channel && !wdev->valid_links) { 4220 struct cfg80211_chan_def chandef = {}; 4221 int ret; 4222 4223 ret = rdev_get_channel(rdev, wdev, 0, &chandef); 4224 if (ret == 0 && nl80211_send_chandef(msg, &chandef)) 4225 goto nla_put_failure; 4226 } 4227 4228 if (rdev->ops->get_tx_power && !wdev->valid_links) { 4229 int dbm, ret; 4230 4231 ret = rdev_get_tx_power(rdev, wdev, -1, 0, &dbm); 4232 if (ret == 0 && 4233 nla_put_u32(msg, NL80211_ATTR_WIPHY_TX_POWER_LEVEL, 4234 DBM_TO_MBM(dbm))) 4235 goto nla_put_failure; 4236 } 4237 4238 switch (wdev->iftype) { 4239 case NL80211_IFTYPE_AP: 4240 case NL80211_IFTYPE_P2P_GO: 4241 if (wdev->u.ap.ssid_len && 4242 nla_put(msg, NL80211_ATTR_SSID, wdev->u.ap.ssid_len, 4243 wdev->u.ap.ssid)) 4244 goto nla_put_failure; 4245 break; 4246 case NL80211_IFTYPE_STATION: 4247 case NL80211_IFTYPE_P2P_CLIENT: 4248 if (wdev->u.client.ssid_len && 4249 nla_put(msg, NL80211_ATTR_SSID, wdev->u.client.ssid_len, 4250 wdev->u.client.ssid)) 4251 goto nla_put_failure; 4252 break; 4253 case NL80211_IFTYPE_ADHOC: 4254 if (wdev->u.ibss.ssid_len && 4255 nla_put(msg, NL80211_ATTR_SSID, wdev->u.ibss.ssid_len, 4256 wdev->u.ibss.ssid)) 4257 goto nla_put_failure; 4258 break; 4259 default: 4260 /* nothing */ 4261 break; 4262 } 4263 4264 if (rdev->ops->get_txq_stats) { 4265 struct cfg80211_txq_stats txqstats = {}; 4266 int ret = rdev_get_txq_stats(rdev, wdev, &txqstats); 4267 4268 if (ret == 0 && 4269 !nl80211_put_txq_stats(msg, &txqstats, 4270 NL80211_ATTR_TXQ_STATS)) 4271 goto nla_put_failure; 4272 } 4273 4274 if (wdev->valid_links) { 4275 unsigned int link_id; 4276 struct nlattr *links = nla_nest_start(msg, 4277 NL80211_ATTR_MLO_LINKS); 4278 4279 if (!links) 4280 goto nla_put_failure; 4281 4282 for_each_valid_link(wdev, link_id) { 4283 struct nlattr *link = nla_nest_start(msg, link_id + 1); 4284 struct cfg80211_chan_def chandef = {}; 4285 int ret; 4286 4287 if (!link) 4288 goto nla_put_failure; 4289 4290 if (nla_put_u8(msg, NL80211_ATTR_MLO_LINK_ID, link_id)) 4291 goto nla_put_failure; 4292 if (nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, 4293 wdev->links[link_id].addr)) 4294 goto nla_put_failure; 4295 4296 ret = rdev_get_channel(rdev, wdev, link_id, &chandef); 4297 if (ret == 0 && nl80211_send_chandef(msg, &chandef)) 4298 goto nla_put_failure; 4299 4300 if (rdev->ops->get_tx_power) { 4301 int dbm, ret; 4302 4303 ret = rdev_get_tx_power(rdev, wdev, -1, link_id, &dbm); 4304 if (ret == 0 && 4305 nla_put_u32(msg, NL80211_ATTR_WIPHY_TX_POWER_LEVEL, 4306 DBM_TO_MBM(dbm))) 4307 goto nla_put_failure; 4308 } 4309 nla_nest_end(msg, link); 4310 } 4311 4312 nla_nest_end(msg, links); 4313 } 4314 4315 genlmsg_end(msg, hdr); 4316 return 0; 4317 4318 nla_put_failure: 4319 genlmsg_cancel(msg, hdr); 4320 return -EMSGSIZE; 4321 } 4322 4323 static int nl80211_dump_interface(struct sk_buff *skb, struct netlink_callback *cb) 4324 { 4325 int wp_idx = 0; 4326 int if_idx = 0; 4327 int wp_start = cb->args[0]; 4328 int if_start = cb->args[1]; 4329 int filter_wiphy = -1; 4330 struct cfg80211_registered_device *rdev; 4331 struct wireless_dev *wdev; 4332 int ret; 4333 4334 rtnl_lock(); 4335 if (!cb->args[2]) { 4336 struct nl80211_dump_wiphy_state state = { 4337 .filter_wiphy = -1, 4338 }; 4339 4340 ret = nl80211_dump_wiphy_parse(skb, cb, &state); 4341 if (ret) 4342 goto out_unlock; 4343 4344 filter_wiphy = state.filter_wiphy; 4345 4346 /* 4347 * if filtering, set cb->args[2] to +1 since 0 is the default 4348 * value needed to determine that parsing is necessary. 4349 */ 4350 if (filter_wiphy >= 0) 4351 cb->args[2] = filter_wiphy + 1; 4352 else 4353 cb->args[2] = -1; 4354 } else if (cb->args[2] > 0) { 4355 filter_wiphy = cb->args[2] - 1; 4356 } 4357 4358 for_each_rdev(rdev) { 4359 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk))) 4360 continue; 4361 if (wp_idx < wp_start) { 4362 wp_idx++; 4363 continue; 4364 } 4365 4366 if (filter_wiphy >= 0 && filter_wiphy != rdev->wiphy_idx) 4367 continue; 4368 4369 if_idx = 0; 4370 4371 guard(wiphy)(&rdev->wiphy); 4372 4373 list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) { 4374 if (if_idx < if_start) { 4375 if_idx++; 4376 continue; 4377 } 4378 4379 if (nl80211_send_iface(skb, NETLINK_CB(cb->skb).portid, 4380 cb->nlh->nlmsg_seq, NLM_F_MULTI, 4381 rdev, wdev, 4382 NL80211_CMD_NEW_INTERFACE) < 0) 4383 goto out; 4384 4385 if_idx++; 4386 } 4387 4388 if_start = 0; 4389 wp_idx++; 4390 } 4391 out: 4392 cb->args[0] = wp_idx; 4393 cb->args[1] = if_idx; 4394 4395 ret = skb->len; 4396 out_unlock: 4397 rtnl_unlock(); 4398 4399 return ret; 4400 } 4401 4402 static int nl80211_get_interface(struct sk_buff *skb, struct genl_info *info) 4403 { 4404 struct sk_buff *msg; 4405 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 4406 struct wireless_dev *wdev = info->user_ptr[1]; 4407 4408 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 4409 if (!msg) 4410 return -ENOMEM; 4411 4412 if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0, 4413 rdev, wdev, NL80211_CMD_NEW_INTERFACE) < 0) { 4414 nlmsg_free(msg); 4415 return -ENOBUFS; 4416 } 4417 4418 return genlmsg_reply(msg, info); 4419 } 4420 4421 static const struct nla_policy mntr_flags_policy[NL80211_MNTR_FLAG_MAX + 1] = { 4422 [NL80211_MNTR_FLAG_FCSFAIL] = { .type = NLA_FLAG }, 4423 [NL80211_MNTR_FLAG_PLCPFAIL] = { .type = NLA_FLAG }, 4424 [NL80211_MNTR_FLAG_CONTROL] = { .type = NLA_FLAG }, 4425 [NL80211_MNTR_FLAG_OTHER_BSS] = { .type = NLA_FLAG }, 4426 [NL80211_MNTR_FLAG_COOK_FRAMES] = { .type = NLA_FLAG }, 4427 [NL80211_MNTR_FLAG_ACTIVE] = { .type = NLA_FLAG }, 4428 [NL80211_MNTR_FLAG_SKIP_TX] = { .type = NLA_FLAG }, 4429 }; 4430 4431 static int parse_monitor_flags(struct nlattr *nla, u32 *mntrflags) 4432 { 4433 struct nlattr *flags[NL80211_MNTR_FLAG_MAX + 1]; 4434 int flag; 4435 4436 *mntrflags = 0; 4437 4438 if (!nla) 4439 return -EINVAL; 4440 4441 if (nla_parse_nested_deprecated(flags, NL80211_MNTR_FLAG_MAX, nla, mntr_flags_policy, NULL)) 4442 return -EINVAL; 4443 4444 for (flag = 1; flag <= NL80211_MNTR_FLAG_MAX; flag++) 4445 if (flags[flag]) 4446 *mntrflags |= (1<<flag); 4447 4448 /* cooked monitor mode is incompatible with other modes */ 4449 if (*mntrflags & MONITOR_FLAG_COOK_FRAMES && 4450 *mntrflags != MONITOR_FLAG_COOK_FRAMES) 4451 return -EOPNOTSUPP; 4452 4453 *mntrflags |= MONITOR_FLAG_CHANGED; 4454 4455 return 0; 4456 } 4457 4458 static int nl80211_parse_mon_options(struct cfg80211_registered_device *rdev, 4459 enum nl80211_iftype type, 4460 struct genl_info *info, 4461 struct vif_params *params) 4462 { 4463 bool change = false; 4464 int err; 4465 4466 if (info->attrs[NL80211_ATTR_MNTR_FLAGS]) { 4467 if (type != NL80211_IFTYPE_MONITOR) 4468 return -EINVAL; 4469 4470 err = parse_monitor_flags(info->attrs[NL80211_ATTR_MNTR_FLAGS], 4471 ¶ms->flags); 4472 if (err) 4473 return err; 4474 4475 change = true; 4476 } 4477 4478 /* MONITOR_FLAG_COOK_FRAMES is deprecated, refuse cooperation */ 4479 if (params->flags & MONITOR_FLAG_COOK_FRAMES) 4480 return -EOPNOTSUPP; 4481 4482 if (params->flags & MONITOR_FLAG_ACTIVE && 4483 !(rdev->wiphy.features & NL80211_FEATURE_ACTIVE_MONITOR)) 4484 return -EOPNOTSUPP; 4485 4486 if (info->attrs[NL80211_ATTR_MU_MIMO_GROUP_DATA]) { 4487 const u8 *mumimo_groups; 4488 u32 cap_flag = NL80211_EXT_FEATURE_MU_MIMO_AIR_SNIFFER; 4489 4490 if (type != NL80211_IFTYPE_MONITOR) 4491 return -EINVAL; 4492 4493 if (!wiphy_ext_feature_isset(&rdev->wiphy, cap_flag)) 4494 return -EOPNOTSUPP; 4495 4496 mumimo_groups = 4497 nla_data(info->attrs[NL80211_ATTR_MU_MIMO_GROUP_DATA]); 4498 4499 /* bits 0 and 63 are reserved and must be zero */ 4500 if ((mumimo_groups[0] & BIT(0)) || 4501 (mumimo_groups[VHT_MUMIMO_GROUPS_DATA_LEN - 1] & BIT(7))) 4502 return -EINVAL; 4503 4504 params->vht_mumimo_groups = mumimo_groups; 4505 change = true; 4506 } 4507 4508 if (info->attrs[NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR]) { 4509 u32 cap_flag = NL80211_EXT_FEATURE_MU_MIMO_AIR_SNIFFER; 4510 4511 if (type != NL80211_IFTYPE_MONITOR) 4512 return -EINVAL; 4513 4514 if (!wiphy_ext_feature_isset(&rdev->wiphy, cap_flag)) 4515 return -EOPNOTSUPP; 4516 4517 params->vht_mumimo_follow_addr = 4518 nla_data(info->attrs[NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR]); 4519 change = true; 4520 } 4521 4522 return change ? 1 : 0; 4523 } 4524 4525 static int nl80211_valid_4addr(struct cfg80211_registered_device *rdev, 4526 struct net_device *netdev, u8 use_4addr, 4527 enum nl80211_iftype iftype) 4528 { 4529 if (!use_4addr) { 4530 if (netdev && netif_is_bridge_port(netdev)) 4531 return -EBUSY; 4532 return 0; 4533 } 4534 4535 switch (iftype) { 4536 case NL80211_IFTYPE_AP_VLAN: 4537 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_AP) 4538 return 0; 4539 break; 4540 case NL80211_IFTYPE_STATION: 4541 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_STATION) 4542 return 0; 4543 break; 4544 default: 4545 break; 4546 } 4547 4548 return -EOPNOTSUPP; 4549 } 4550 4551 static int nl80211_parse_vif_radio_mask(struct genl_info *info, 4552 u32 *radio_mask) 4553 { 4554 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 4555 struct nlattr *attr = info->attrs[NL80211_ATTR_VIF_RADIO_MASK]; 4556 u32 mask, allowed; 4557 4558 if (!attr) { 4559 *radio_mask = 0; 4560 return 0; 4561 } 4562 4563 allowed = BIT(rdev->wiphy.n_radio) - 1; 4564 mask = nla_get_u32(attr); 4565 if (mask & ~allowed) 4566 return -EINVAL; 4567 if (!mask) 4568 mask = allowed; 4569 *radio_mask = mask; 4570 4571 return 1; 4572 } 4573 4574 static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info) 4575 { 4576 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 4577 struct vif_params params; 4578 int err; 4579 enum nl80211_iftype otype, ntype; 4580 struct net_device *dev = info->user_ptr[1]; 4581 struct wireless_dev *wdev = dev->ieee80211_ptr; 4582 u32 radio_mask = 0; 4583 bool change = false; 4584 4585 memset(¶ms, 0, sizeof(params)); 4586 4587 otype = ntype = dev->ieee80211_ptr->iftype; 4588 4589 if (info->attrs[NL80211_ATTR_IFTYPE]) { 4590 ntype = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]); 4591 if (otype != ntype) 4592 change = true; 4593 } 4594 4595 if (info->attrs[NL80211_ATTR_MESH_ID]) { 4596 if (ntype != NL80211_IFTYPE_MESH_POINT) 4597 return -EINVAL; 4598 if (otype != NL80211_IFTYPE_MESH_POINT) 4599 return -EINVAL; 4600 if (netif_running(dev)) 4601 return -EBUSY; 4602 4603 wdev->u.mesh.id_up_len = 4604 nla_len(info->attrs[NL80211_ATTR_MESH_ID]); 4605 memcpy(wdev->u.mesh.id, 4606 nla_data(info->attrs[NL80211_ATTR_MESH_ID]), 4607 wdev->u.mesh.id_up_len); 4608 } 4609 4610 if (info->attrs[NL80211_ATTR_4ADDR]) { 4611 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]); 4612 change = true; 4613 err = nl80211_valid_4addr(rdev, dev, params.use_4addr, ntype); 4614 if (err) 4615 return err; 4616 } else { 4617 params.use_4addr = -1; 4618 } 4619 4620 err = nl80211_parse_mon_options(rdev, ntype, info, ¶ms); 4621 if (err < 0) 4622 return err; 4623 if (err > 0) 4624 change = true; 4625 4626 err = nl80211_parse_vif_radio_mask(info, &radio_mask); 4627 if (err < 0) 4628 return err; 4629 if (err && netif_running(dev)) 4630 return -EBUSY; 4631 4632 if (change) 4633 err = cfg80211_change_iface(rdev, dev, ntype, ¶ms); 4634 else 4635 err = 0; 4636 4637 if (!err && params.use_4addr != -1) 4638 dev->ieee80211_ptr->use_4addr = params.use_4addr; 4639 4640 if (radio_mask) 4641 wdev->radio_mask = radio_mask; 4642 4643 if (change && !err) 4644 nl80211_notify_iface(rdev, wdev, NL80211_CMD_SET_INTERFACE); 4645 4646 return err; 4647 } 4648 4649 static int _nl80211_new_interface(struct sk_buff *skb, struct genl_info *info) 4650 { 4651 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 4652 struct vif_params params; 4653 struct wireless_dev *wdev; 4654 struct sk_buff *msg; 4655 u32 radio_mask; 4656 int err; 4657 enum nl80211_iftype type = NL80211_IFTYPE_UNSPECIFIED; 4658 4659 memset(¶ms, 0, sizeof(params)); 4660 4661 if (!info->attrs[NL80211_ATTR_IFNAME]) 4662 return -EINVAL; 4663 4664 if (info->attrs[NL80211_ATTR_IFTYPE]) 4665 type = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]); 4666 4667 if (!rdev->ops->add_virtual_intf) 4668 return -EOPNOTSUPP; 4669 4670 if ((type == NL80211_IFTYPE_P2P_DEVICE || type == NL80211_IFTYPE_NAN || 4671 rdev->wiphy.features & NL80211_FEATURE_MAC_ON_CREATE) && 4672 info->attrs[NL80211_ATTR_MAC]) { 4673 nla_memcpy(params.macaddr, info->attrs[NL80211_ATTR_MAC], 4674 ETH_ALEN); 4675 if (!is_valid_ether_addr(params.macaddr)) 4676 return -EADDRNOTAVAIL; 4677 } 4678 4679 if (info->attrs[NL80211_ATTR_4ADDR]) { 4680 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]); 4681 err = nl80211_valid_4addr(rdev, NULL, params.use_4addr, type); 4682 if (err) 4683 return err; 4684 } 4685 4686 if (!cfg80211_iftype_allowed(&rdev->wiphy, type, params.use_4addr, 0)) 4687 return -EOPNOTSUPP; 4688 4689 err = nl80211_parse_mon_options(rdev, type, info, ¶ms); 4690 if (err < 0) 4691 return err; 4692 4693 err = nl80211_parse_vif_radio_mask(info, &radio_mask); 4694 if (err < 0) 4695 return err; 4696 4697 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 4698 if (!msg) 4699 return -ENOMEM; 4700 4701 wdev = rdev_add_virtual_intf(rdev, 4702 nla_data(info->attrs[NL80211_ATTR_IFNAME]), 4703 NET_NAME_USER, type, ¶ms); 4704 if (WARN_ON(!wdev)) { 4705 nlmsg_free(msg); 4706 return -EPROTO; 4707 } else if (IS_ERR(wdev)) { 4708 nlmsg_free(msg); 4709 return PTR_ERR(wdev); 4710 } 4711 4712 if (info->attrs[NL80211_ATTR_SOCKET_OWNER]) 4713 wdev->owner_nlportid = info->snd_portid; 4714 4715 switch (type) { 4716 case NL80211_IFTYPE_MESH_POINT: 4717 if (!info->attrs[NL80211_ATTR_MESH_ID]) 4718 break; 4719 wdev->u.mesh.id_up_len = 4720 nla_len(info->attrs[NL80211_ATTR_MESH_ID]); 4721 memcpy(wdev->u.mesh.id, 4722 nla_data(info->attrs[NL80211_ATTR_MESH_ID]), 4723 wdev->u.mesh.id_up_len); 4724 break; 4725 case NL80211_IFTYPE_NAN: 4726 case NL80211_IFTYPE_P2P_DEVICE: 4727 /* 4728 * P2P Device and NAN do not have a netdev, so don't go 4729 * through the netdev notifier and must be added here 4730 */ 4731 cfg80211_init_wdev(wdev); 4732 cfg80211_register_wdev(rdev, wdev); 4733 break; 4734 default: 4735 break; 4736 } 4737 4738 if (radio_mask) 4739 wdev->radio_mask = radio_mask; 4740 4741 if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0, 4742 rdev, wdev, NL80211_CMD_NEW_INTERFACE) < 0) { 4743 nlmsg_free(msg); 4744 return -ENOBUFS; 4745 } 4746 4747 return genlmsg_reply(msg, info); 4748 } 4749 4750 static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info) 4751 { 4752 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 4753 4754 /* to avoid failing a new interface creation due to pending removal */ 4755 cfg80211_destroy_ifaces(rdev); 4756 4757 guard(wiphy)(&rdev->wiphy); 4758 4759 return _nl80211_new_interface(skb, info); 4760 } 4761 4762 static int nl80211_del_interface(struct sk_buff *skb, struct genl_info *info) 4763 { 4764 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 4765 struct wireless_dev *wdev = info->user_ptr[1]; 4766 4767 if (!rdev->ops->del_virtual_intf) 4768 return -EOPNOTSUPP; 4769 4770 /* 4771 * We hold RTNL, so this is safe, without RTNL opencount cannot 4772 * reach 0, and thus the rdev cannot be deleted. 4773 * 4774 * We need to do it for the dev_close(), since that will call 4775 * the netdev notifiers, and we need to acquire the mutex there 4776 * but don't know if we get there from here or from some other 4777 * place (e.g. "ip link set ... down"). 4778 */ 4779 mutex_unlock(&rdev->wiphy.mtx); 4780 4781 /* 4782 * If we remove a wireless device without a netdev then clear 4783 * user_ptr[1] so that nl80211_post_doit won't dereference it 4784 * to check if it needs to do dev_put(). Otherwise it crashes 4785 * since the wdev has been freed, unlike with a netdev where 4786 * we need the dev_put() for the netdev to really be freed. 4787 */ 4788 if (!wdev->netdev) 4789 info->user_ptr[1] = NULL; 4790 else 4791 dev_close(wdev->netdev); 4792 4793 mutex_lock(&rdev->wiphy.mtx); 4794 4795 return cfg80211_remove_virtual_intf(rdev, wdev); 4796 } 4797 4798 static int nl80211_set_noack_map(struct sk_buff *skb, struct genl_info *info) 4799 { 4800 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 4801 struct net_device *dev = info->user_ptr[1]; 4802 u16 noack_map; 4803 4804 if (!info->attrs[NL80211_ATTR_NOACK_MAP]) 4805 return -EINVAL; 4806 4807 if (!rdev->ops->set_noack_map) 4808 return -EOPNOTSUPP; 4809 4810 noack_map = nla_get_u16(info->attrs[NL80211_ATTR_NOACK_MAP]); 4811 4812 return rdev_set_noack_map(rdev, dev, noack_map); 4813 } 4814 4815 static int nl80211_validate_key_link_id(struct genl_info *info, 4816 struct wireless_dev *wdev, 4817 int link_id, bool pairwise) 4818 { 4819 if (pairwise) { 4820 if (link_id != -1) { 4821 GENL_SET_ERR_MSG(info, 4822 "link ID not allowed for pairwise key"); 4823 return -EINVAL; 4824 } 4825 4826 return 0; 4827 } 4828 4829 if (wdev->valid_links) { 4830 if (link_id == -1) { 4831 GENL_SET_ERR_MSG(info, 4832 "link ID must for MLO group key"); 4833 return -EINVAL; 4834 } 4835 if (!(wdev->valid_links & BIT(link_id))) { 4836 GENL_SET_ERR_MSG(info, "invalid link ID for MLO group key"); 4837 return -EINVAL; 4838 } 4839 } else if (link_id != -1) { 4840 GENL_SET_ERR_MSG(info, "link ID not allowed for non-MLO group key"); 4841 return -EINVAL; 4842 } 4843 4844 return 0; 4845 } 4846 4847 struct get_key_cookie { 4848 struct sk_buff *msg; 4849 int error; 4850 int idx; 4851 }; 4852 4853 static void get_key_callback(void *c, struct key_params *params) 4854 { 4855 struct nlattr *key; 4856 struct get_key_cookie *cookie = c; 4857 4858 if ((params->seq && 4859 nla_put(cookie->msg, NL80211_ATTR_KEY_SEQ, 4860 params->seq_len, params->seq)) || 4861 (params->cipher && 4862 nla_put_u32(cookie->msg, NL80211_ATTR_KEY_CIPHER, 4863 params->cipher))) 4864 goto nla_put_failure; 4865 4866 key = nla_nest_start_noflag(cookie->msg, NL80211_ATTR_KEY); 4867 if (!key) 4868 goto nla_put_failure; 4869 4870 if ((params->seq && 4871 nla_put(cookie->msg, NL80211_KEY_SEQ, 4872 params->seq_len, params->seq)) || 4873 (params->cipher && 4874 nla_put_u32(cookie->msg, NL80211_KEY_CIPHER, 4875 params->cipher))) 4876 goto nla_put_failure; 4877 4878 if (nla_put_u8(cookie->msg, NL80211_KEY_IDX, cookie->idx)) 4879 goto nla_put_failure; 4880 4881 nla_nest_end(cookie->msg, key); 4882 4883 return; 4884 nla_put_failure: 4885 cookie->error = 1; 4886 } 4887 4888 static int nl80211_get_key(struct sk_buff *skb, struct genl_info *info) 4889 { 4890 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 4891 int err; 4892 struct net_device *dev = info->user_ptr[1]; 4893 u8 key_idx = 0; 4894 const u8 *mac_addr = NULL; 4895 bool pairwise; 4896 struct get_key_cookie cookie = { 4897 .error = 0, 4898 }; 4899 void *hdr; 4900 struct sk_buff *msg; 4901 bool bigtk_support = false; 4902 int link_id = nl80211_link_id_or_invalid(info->attrs); 4903 struct wireless_dev *wdev = dev->ieee80211_ptr; 4904 4905 if (wiphy_ext_feature_isset(&rdev->wiphy, 4906 NL80211_EXT_FEATURE_BEACON_PROTECTION)) 4907 bigtk_support = true; 4908 4909 if ((wdev->iftype == NL80211_IFTYPE_STATION || 4910 wdev->iftype == NL80211_IFTYPE_P2P_CLIENT) && 4911 wiphy_ext_feature_isset(&rdev->wiphy, 4912 NL80211_EXT_FEATURE_BEACON_PROTECTION_CLIENT)) 4913 bigtk_support = true; 4914 4915 if (info->attrs[NL80211_ATTR_KEY_IDX]) { 4916 key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]); 4917 4918 if (key_idx >= 6 && key_idx <= 7 && !bigtk_support) { 4919 GENL_SET_ERR_MSG(info, "BIGTK not supported"); 4920 return -EINVAL; 4921 } 4922 } 4923 4924 if (info->attrs[NL80211_ATTR_MAC]) 4925 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]); 4926 4927 pairwise = !!mac_addr; 4928 if (info->attrs[NL80211_ATTR_KEY_TYPE]) { 4929 u32 kt = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]); 4930 4931 if (kt != NL80211_KEYTYPE_GROUP && 4932 kt != NL80211_KEYTYPE_PAIRWISE) 4933 return -EINVAL; 4934 pairwise = kt == NL80211_KEYTYPE_PAIRWISE; 4935 } 4936 4937 if (!rdev->ops->get_key) 4938 return -EOPNOTSUPP; 4939 4940 if (!pairwise && mac_addr && !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN)) 4941 return -ENOENT; 4942 4943 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 4944 if (!msg) 4945 return -ENOMEM; 4946 4947 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0, 4948 NL80211_CMD_NEW_KEY); 4949 if (!hdr) 4950 goto nla_put_failure; 4951 4952 cookie.msg = msg; 4953 cookie.idx = key_idx; 4954 4955 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) || 4956 nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_idx)) 4957 goto nla_put_failure; 4958 if (mac_addr && 4959 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr)) 4960 goto nla_put_failure; 4961 4962 err = nl80211_validate_key_link_id(info, wdev, link_id, pairwise); 4963 if (err) 4964 goto free_msg; 4965 4966 err = rdev_get_key(rdev, dev, link_id, key_idx, pairwise, mac_addr, 4967 &cookie, get_key_callback); 4968 4969 if (err) 4970 goto free_msg; 4971 4972 if (cookie.error) 4973 goto nla_put_failure; 4974 4975 genlmsg_end(msg, hdr); 4976 return genlmsg_reply(msg, info); 4977 4978 nla_put_failure: 4979 err = -ENOBUFS; 4980 free_msg: 4981 nlmsg_free(msg); 4982 return err; 4983 } 4984 4985 static int nl80211_set_key(struct sk_buff *skb, struct genl_info *info) 4986 { 4987 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 4988 struct key_parse key; 4989 int err; 4990 struct net_device *dev = info->user_ptr[1]; 4991 int link_id = nl80211_link_id_or_invalid(info->attrs); 4992 struct wireless_dev *wdev = dev->ieee80211_ptr; 4993 4994 err = nl80211_parse_key(info, &key); 4995 if (err) 4996 return err; 4997 4998 if (key.idx < 0) 4999 return -EINVAL; 5000 5001 /* Only support setting default key and 5002 * Extended Key ID action NL80211_KEY_SET_TX. 5003 */ 5004 if (!key.def && !key.defmgmt && !key.defbeacon && 5005 !(key.p.mode == NL80211_KEY_SET_TX)) 5006 return -EINVAL; 5007 5008 if (key.def) { 5009 if (!rdev->ops->set_default_key) 5010 return -EOPNOTSUPP; 5011 5012 err = nl80211_key_allowed(wdev); 5013 if (err) 5014 return err; 5015 5016 err = nl80211_validate_key_link_id(info, wdev, link_id, false); 5017 if (err) 5018 return err; 5019 5020 err = rdev_set_default_key(rdev, dev, link_id, key.idx, 5021 key.def_uni, key.def_multi); 5022 5023 if (err) 5024 return err; 5025 5026 #ifdef CONFIG_CFG80211_WEXT 5027 wdev->wext.default_key = key.idx; 5028 #endif 5029 return 0; 5030 } else if (key.defmgmt) { 5031 if (key.def_uni || !key.def_multi) 5032 return -EINVAL; 5033 5034 if (!rdev->ops->set_default_mgmt_key) 5035 return -EOPNOTSUPP; 5036 5037 err = nl80211_key_allowed(wdev); 5038 if (err) 5039 return err; 5040 5041 err = nl80211_validate_key_link_id(info, wdev, link_id, false); 5042 if (err) 5043 return err; 5044 5045 err = rdev_set_default_mgmt_key(rdev, dev, link_id, key.idx); 5046 if (err) 5047 return err; 5048 5049 #ifdef CONFIG_CFG80211_WEXT 5050 wdev->wext.default_mgmt_key = key.idx; 5051 #endif 5052 return 0; 5053 } else if (key.defbeacon) { 5054 if (key.def_uni || !key.def_multi) 5055 return -EINVAL; 5056 5057 if (!rdev->ops->set_default_beacon_key) 5058 return -EOPNOTSUPP; 5059 5060 err = nl80211_key_allowed(wdev); 5061 if (err) 5062 return err; 5063 5064 err = nl80211_validate_key_link_id(info, wdev, link_id, false); 5065 if (err) 5066 return err; 5067 5068 return rdev_set_default_beacon_key(rdev, dev, link_id, key.idx); 5069 } else if (key.p.mode == NL80211_KEY_SET_TX && 5070 wiphy_ext_feature_isset(&rdev->wiphy, 5071 NL80211_EXT_FEATURE_EXT_KEY_ID)) { 5072 u8 *mac_addr = NULL; 5073 5074 if (info->attrs[NL80211_ATTR_MAC]) 5075 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]); 5076 5077 if (!mac_addr || key.idx < 0 || key.idx > 1) 5078 return -EINVAL; 5079 5080 err = nl80211_validate_key_link_id(info, wdev, link_id, true); 5081 if (err) 5082 return err; 5083 5084 return rdev_add_key(rdev, dev, link_id, key.idx, 5085 NL80211_KEYTYPE_PAIRWISE, 5086 mac_addr, &key.p); 5087 } 5088 5089 return -EINVAL; 5090 } 5091 5092 static int nl80211_new_key(struct sk_buff *skb, struct genl_info *info) 5093 { 5094 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 5095 int err; 5096 struct net_device *dev = info->user_ptr[1]; 5097 struct key_parse key; 5098 const u8 *mac_addr = NULL; 5099 int link_id = nl80211_link_id_or_invalid(info->attrs); 5100 struct wireless_dev *wdev = dev->ieee80211_ptr; 5101 5102 err = nl80211_parse_key(info, &key); 5103 if (err) 5104 return err; 5105 5106 if (!key.p.key) { 5107 GENL_SET_ERR_MSG(info, "no key"); 5108 return -EINVAL; 5109 } 5110 5111 if (info->attrs[NL80211_ATTR_MAC]) 5112 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]); 5113 5114 if (key.type == -1) { 5115 if (mac_addr) 5116 key.type = NL80211_KEYTYPE_PAIRWISE; 5117 else 5118 key.type = NL80211_KEYTYPE_GROUP; 5119 } 5120 5121 /* for now */ 5122 if (key.type != NL80211_KEYTYPE_PAIRWISE && 5123 key.type != NL80211_KEYTYPE_GROUP) { 5124 GENL_SET_ERR_MSG(info, "key type not pairwise or group"); 5125 return -EINVAL; 5126 } 5127 5128 if (key.type == NL80211_KEYTYPE_GROUP && 5129 info->attrs[NL80211_ATTR_VLAN_ID]) 5130 key.p.vlan_id = nla_get_u16(info->attrs[NL80211_ATTR_VLAN_ID]); 5131 5132 if (!rdev->ops->add_key) 5133 return -EOPNOTSUPP; 5134 5135 if (cfg80211_validate_key_settings(rdev, &key.p, key.idx, 5136 key.type == NL80211_KEYTYPE_PAIRWISE, 5137 mac_addr)) { 5138 GENL_SET_ERR_MSG(info, "key setting validation failed"); 5139 return -EINVAL; 5140 } 5141 5142 err = nl80211_key_allowed(wdev); 5143 if (err) 5144 GENL_SET_ERR_MSG(info, "key not allowed"); 5145 5146 if (!err) 5147 err = nl80211_validate_key_link_id(info, wdev, link_id, 5148 key.type == NL80211_KEYTYPE_PAIRWISE); 5149 5150 if (!err) { 5151 err = rdev_add_key(rdev, dev, link_id, key.idx, 5152 key.type == NL80211_KEYTYPE_PAIRWISE, 5153 mac_addr, &key.p); 5154 if (err) 5155 GENL_SET_ERR_MSG(info, "key addition failed"); 5156 } 5157 5158 return err; 5159 } 5160 5161 static int nl80211_del_key(struct sk_buff *skb, struct genl_info *info) 5162 { 5163 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 5164 int err; 5165 struct net_device *dev = info->user_ptr[1]; 5166 u8 *mac_addr = NULL; 5167 struct key_parse key; 5168 int link_id = nl80211_link_id_or_invalid(info->attrs); 5169 struct wireless_dev *wdev = dev->ieee80211_ptr; 5170 5171 err = nl80211_parse_key(info, &key); 5172 if (err) 5173 return err; 5174 5175 if (info->attrs[NL80211_ATTR_MAC]) 5176 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]); 5177 5178 if (key.type == -1) { 5179 if (mac_addr) 5180 key.type = NL80211_KEYTYPE_PAIRWISE; 5181 else 5182 key.type = NL80211_KEYTYPE_GROUP; 5183 } 5184 5185 /* for now */ 5186 if (key.type != NL80211_KEYTYPE_PAIRWISE && 5187 key.type != NL80211_KEYTYPE_GROUP) 5188 return -EINVAL; 5189 5190 if (!cfg80211_valid_key_idx(rdev, key.idx, 5191 key.type == NL80211_KEYTYPE_PAIRWISE)) 5192 return -EINVAL; 5193 5194 if (!rdev->ops->del_key) 5195 return -EOPNOTSUPP; 5196 5197 err = nl80211_key_allowed(wdev); 5198 5199 if (key.type == NL80211_KEYTYPE_GROUP && mac_addr && 5200 !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN)) 5201 err = -ENOENT; 5202 5203 if (!err) 5204 err = nl80211_validate_key_link_id(info, wdev, link_id, 5205 key.type == NL80211_KEYTYPE_PAIRWISE); 5206 5207 if (!err) 5208 err = rdev_del_key(rdev, dev, link_id, key.idx, 5209 key.type == NL80211_KEYTYPE_PAIRWISE, 5210 mac_addr); 5211 5212 #ifdef CONFIG_CFG80211_WEXT 5213 if (!err) { 5214 if (key.idx == wdev->wext.default_key) 5215 wdev->wext.default_key = -1; 5216 else if (key.idx == wdev->wext.default_mgmt_key) 5217 wdev->wext.default_mgmt_key = -1; 5218 } 5219 #endif 5220 5221 return err; 5222 } 5223 5224 /* This function returns an error or the number of nested attributes */ 5225 static int validate_acl_mac_addrs(struct nlattr *nl_attr) 5226 { 5227 struct nlattr *attr; 5228 int n_entries = 0, tmp; 5229 5230 nla_for_each_nested(attr, nl_attr, tmp) { 5231 if (nla_len(attr) != ETH_ALEN) 5232 return -EINVAL; 5233 5234 n_entries++; 5235 } 5236 5237 return n_entries; 5238 } 5239 5240 /* 5241 * This function parses ACL information and allocates memory for ACL data. 5242 * On successful return, the calling function is responsible to free the 5243 * ACL buffer returned by this function. 5244 */ 5245 static struct cfg80211_acl_data *parse_acl_data(struct wiphy *wiphy, 5246 struct genl_info *info) 5247 { 5248 enum nl80211_acl_policy acl_policy; 5249 struct nlattr *attr; 5250 struct cfg80211_acl_data *acl; 5251 int i = 0, n_entries, tmp; 5252 5253 if (!wiphy->max_acl_mac_addrs) 5254 return ERR_PTR(-EOPNOTSUPP); 5255 5256 if (!info->attrs[NL80211_ATTR_ACL_POLICY]) 5257 return ERR_PTR(-EINVAL); 5258 5259 acl_policy = nla_get_u32(info->attrs[NL80211_ATTR_ACL_POLICY]); 5260 if (acl_policy != NL80211_ACL_POLICY_ACCEPT_UNLESS_LISTED && 5261 acl_policy != NL80211_ACL_POLICY_DENY_UNLESS_LISTED) 5262 return ERR_PTR(-EINVAL); 5263 5264 if (!info->attrs[NL80211_ATTR_MAC_ADDRS]) 5265 return ERR_PTR(-EINVAL); 5266 5267 n_entries = validate_acl_mac_addrs(info->attrs[NL80211_ATTR_MAC_ADDRS]); 5268 if (n_entries < 0) 5269 return ERR_PTR(n_entries); 5270 5271 if (n_entries > wiphy->max_acl_mac_addrs) 5272 return ERR_PTR(-EOPNOTSUPP); 5273 5274 acl = kzalloc(struct_size(acl, mac_addrs, n_entries), GFP_KERNEL); 5275 if (!acl) 5276 return ERR_PTR(-ENOMEM); 5277 acl->n_acl_entries = n_entries; 5278 5279 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_MAC_ADDRS], tmp) { 5280 memcpy(acl->mac_addrs[i].addr, nla_data(attr), ETH_ALEN); 5281 i++; 5282 } 5283 acl->acl_policy = acl_policy; 5284 5285 return acl; 5286 } 5287 5288 static int nl80211_set_mac_acl(struct sk_buff *skb, struct genl_info *info) 5289 { 5290 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 5291 struct net_device *dev = info->user_ptr[1]; 5292 struct cfg80211_acl_data *acl; 5293 int err; 5294 5295 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP && 5296 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) 5297 return -EOPNOTSUPP; 5298 5299 if (!dev->ieee80211_ptr->links[0].ap.beacon_interval) 5300 return -EINVAL; 5301 5302 acl = parse_acl_data(&rdev->wiphy, info); 5303 if (IS_ERR(acl)) 5304 return PTR_ERR(acl); 5305 5306 err = rdev_set_mac_acl(rdev, dev, acl); 5307 5308 kfree(acl); 5309 5310 return err; 5311 } 5312 5313 static u32 rateset_to_mask(struct ieee80211_supported_band *sband, 5314 u8 *rates, u8 rates_len) 5315 { 5316 u8 i; 5317 u32 mask = 0; 5318 5319 for (i = 0; i < rates_len; i++) { 5320 int rate = (rates[i] & 0x7f) * 5; 5321 int ridx; 5322 5323 for (ridx = 0; ridx < sband->n_bitrates; ridx++) { 5324 struct ieee80211_rate *srate = 5325 &sband->bitrates[ridx]; 5326 if (rate == srate->bitrate) { 5327 mask |= 1 << ridx; 5328 break; 5329 } 5330 } 5331 if (ridx == sband->n_bitrates) 5332 return 0; /* rate not found */ 5333 } 5334 5335 return mask; 5336 } 5337 5338 static bool ht_rateset_to_mask(struct ieee80211_supported_band *sband, 5339 u8 *rates, u8 rates_len, 5340 u8 mcs[IEEE80211_HT_MCS_MASK_LEN]) 5341 { 5342 u8 i; 5343 5344 memset(mcs, 0, IEEE80211_HT_MCS_MASK_LEN); 5345 5346 for (i = 0; i < rates_len; i++) { 5347 int ridx, rbit; 5348 5349 ridx = rates[i] / 8; 5350 rbit = BIT(rates[i] % 8); 5351 5352 /* check validity */ 5353 if ((ridx < 0) || (ridx >= IEEE80211_HT_MCS_MASK_LEN)) 5354 return false; 5355 5356 /* check availability */ 5357 ridx = array_index_nospec(ridx, IEEE80211_HT_MCS_MASK_LEN); 5358 if (sband->ht_cap.mcs.rx_mask[ridx] & rbit) 5359 mcs[ridx] |= rbit; 5360 else 5361 return false; 5362 } 5363 5364 return true; 5365 } 5366 5367 static u16 vht_mcs_map_to_mcs_mask(u8 vht_mcs_map) 5368 { 5369 u16 mcs_mask = 0; 5370 5371 switch (vht_mcs_map) { 5372 case IEEE80211_VHT_MCS_NOT_SUPPORTED: 5373 break; 5374 case IEEE80211_VHT_MCS_SUPPORT_0_7: 5375 mcs_mask = 0x00FF; 5376 break; 5377 case IEEE80211_VHT_MCS_SUPPORT_0_8: 5378 mcs_mask = 0x01FF; 5379 break; 5380 case IEEE80211_VHT_MCS_SUPPORT_0_9: 5381 mcs_mask = 0x03FF; 5382 break; 5383 default: 5384 break; 5385 } 5386 5387 return mcs_mask; 5388 } 5389 5390 static void vht_build_mcs_mask(u16 vht_mcs_map, 5391 u16 vht_mcs_mask[NL80211_VHT_NSS_MAX]) 5392 { 5393 u8 nss; 5394 5395 for (nss = 0; nss < NL80211_VHT_NSS_MAX; nss++) { 5396 vht_mcs_mask[nss] = vht_mcs_map_to_mcs_mask(vht_mcs_map & 0x03); 5397 vht_mcs_map >>= 2; 5398 } 5399 } 5400 5401 static bool vht_set_mcs_mask(struct ieee80211_supported_band *sband, 5402 struct nl80211_txrate_vht *txrate, 5403 u16 mcs[NL80211_VHT_NSS_MAX]) 5404 { 5405 u16 tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map); 5406 u16 tx_mcs_mask[NL80211_VHT_NSS_MAX] = {}; 5407 u8 i; 5408 5409 if (!sband->vht_cap.vht_supported) 5410 return false; 5411 5412 memset(mcs, 0, sizeof(u16) * NL80211_VHT_NSS_MAX); 5413 5414 /* Build vht_mcs_mask from VHT capabilities */ 5415 vht_build_mcs_mask(tx_mcs_map, tx_mcs_mask); 5416 5417 for (i = 0; i < NL80211_VHT_NSS_MAX; i++) { 5418 if ((tx_mcs_mask[i] & txrate->mcs[i]) == txrate->mcs[i]) 5419 mcs[i] = txrate->mcs[i]; 5420 else 5421 return false; 5422 } 5423 5424 return true; 5425 } 5426 5427 static u16 he_mcs_map_to_mcs_mask(u8 he_mcs_map) 5428 { 5429 switch (he_mcs_map) { 5430 case IEEE80211_HE_MCS_NOT_SUPPORTED: 5431 return 0; 5432 case IEEE80211_HE_MCS_SUPPORT_0_7: 5433 return 0x00FF; 5434 case IEEE80211_HE_MCS_SUPPORT_0_9: 5435 return 0x03FF; 5436 case IEEE80211_HE_MCS_SUPPORT_0_11: 5437 return 0xFFF; 5438 default: 5439 break; 5440 } 5441 return 0; 5442 } 5443 5444 static void he_build_mcs_mask(u16 he_mcs_map, 5445 u16 he_mcs_mask[NL80211_HE_NSS_MAX]) 5446 { 5447 u8 nss; 5448 5449 for (nss = 0; nss < NL80211_HE_NSS_MAX; nss++) { 5450 he_mcs_mask[nss] = he_mcs_map_to_mcs_mask(he_mcs_map & 0x03); 5451 he_mcs_map >>= 2; 5452 } 5453 } 5454 5455 static u16 he_get_txmcsmap(struct genl_info *info, unsigned int link_id, 5456 const struct ieee80211_sta_he_cap *he_cap) 5457 { 5458 struct net_device *dev = info->user_ptr[1]; 5459 struct wireless_dev *wdev = dev->ieee80211_ptr; 5460 struct cfg80211_chan_def *chandef; 5461 __le16 tx_mcs; 5462 5463 chandef = wdev_chandef(wdev, link_id); 5464 if (!chandef) { 5465 /* 5466 * This is probably broken, but we never maintained 5467 * a chandef in these cases, so it always was. 5468 */ 5469 return le16_to_cpu(he_cap->he_mcs_nss_supp.tx_mcs_80); 5470 } 5471 5472 switch (chandef->width) { 5473 case NL80211_CHAN_WIDTH_80P80: 5474 tx_mcs = he_cap->he_mcs_nss_supp.tx_mcs_80p80; 5475 break; 5476 case NL80211_CHAN_WIDTH_160: 5477 tx_mcs = he_cap->he_mcs_nss_supp.tx_mcs_160; 5478 break; 5479 default: 5480 tx_mcs = he_cap->he_mcs_nss_supp.tx_mcs_80; 5481 break; 5482 } 5483 5484 return le16_to_cpu(tx_mcs); 5485 } 5486 5487 static bool he_set_mcs_mask(struct genl_info *info, 5488 struct wireless_dev *wdev, 5489 struct ieee80211_supported_band *sband, 5490 struct nl80211_txrate_he *txrate, 5491 u16 mcs[NL80211_HE_NSS_MAX], 5492 unsigned int link_id) 5493 { 5494 const struct ieee80211_sta_he_cap *he_cap; 5495 u16 tx_mcs_mask[NL80211_HE_NSS_MAX] = {}; 5496 u16 tx_mcs_map = 0; 5497 u8 i; 5498 5499 he_cap = ieee80211_get_he_iftype_cap(sband, wdev->iftype); 5500 if (!he_cap) 5501 return false; 5502 5503 memset(mcs, 0, sizeof(u16) * NL80211_HE_NSS_MAX); 5504 5505 tx_mcs_map = he_get_txmcsmap(info, link_id, he_cap); 5506 5507 /* Build he_mcs_mask from HE capabilities */ 5508 he_build_mcs_mask(tx_mcs_map, tx_mcs_mask); 5509 5510 for (i = 0; i < NL80211_HE_NSS_MAX; i++) { 5511 if ((tx_mcs_mask[i] & txrate->mcs[i]) == txrate->mcs[i]) 5512 mcs[i] = txrate->mcs[i]; 5513 else 5514 return false; 5515 } 5516 5517 return true; 5518 } 5519 5520 static void eht_build_mcs_mask(struct genl_info *info, 5521 const struct ieee80211_sta_eht_cap *eht_cap, 5522 u8 mcs_nss_len, u16 *mcs_mask) 5523 { 5524 struct net_device *dev = info->user_ptr[1]; 5525 struct wireless_dev *wdev = dev->ieee80211_ptr; 5526 u8 nss, mcs_7 = 0, mcs_9 = 0, mcs_11 = 0, mcs_13 = 0; 5527 unsigned int link_id = nl80211_link_id(info->attrs); 5528 5529 if (mcs_nss_len == 4) { 5530 const struct ieee80211_eht_mcs_nss_supp_20mhz_only *mcs = 5531 &eht_cap->eht_mcs_nss_supp.only_20mhz; 5532 5533 mcs_7 = u8_get_bits(mcs->rx_tx_mcs7_max_nss, 5534 IEEE80211_EHT_MCS_NSS_TX); 5535 mcs_9 = u8_get_bits(mcs->rx_tx_mcs9_max_nss, 5536 IEEE80211_EHT_MCS_NSS_TX); 5537 mcs_11 = u8_get_bits(mcs->rx_tx_mcs11_max_nss, 5538 IEEE80211_EHT_MCS_NSS_TX); 5539 mcs_13 = u8_get_bits(mcs->rx_tx_mcs13_max_nss, 5540 IEEE80211_EHT_MCS_NSS_TX); 5541 5542 } else { 5543 const struct ieee80211_eht_mcs_nss_supp_bw *mcs; 5544 enum nl80211_chan_width width; 5545 5546 switch (wdev->iftype) { 5547 case NL80211_IFTYPE_ADHOC: 5548 width = wdev->u.ibss.chandef.width; 5549 break; 5550 case NL80211_IFTYPE_MESH_POINT: 5551 width = wdev->u.mesh.chandef.width; 5552 break; 5553 case NL80211_IFTYPE_OCB: 5554 width = wdev->u.ocb.chandef.width; 5555 break; 5556 default: 5557 if (wdev->valid_links) 5558 width = wdev->links[link_id].ap.chandef.width; 5559 else 5560 width = wdev->u.ap.preset_chandef.width; 5561 break; 5562 } 5563 5564 switch (width) { 5565 case NL80211_CHAN_WIDTH_320: 5566 mcs = &eht_cap->eht_mcs_nss_supp.bw._320; 5567 break; 5568 case NL80211_CHAN_WIDTH_160: 5569 mcs = &eht_cap->eht_mcs_nss_supp.bw._160; 5570 break; 5571 default: 5572 mcs = &eht_cap->eht_mcs_nss_supp.bw._80; 5573 break; 5574 } 5575 5576 mcs_7 = u8_get_bits(mcs->rx_tx_mcs9_max_nss, 5577 IEEE80211_EHT_MCS_NSS_TX); 5578 mcs_9 = u8_get_bits(mcs->rx_tx_mcs9_max_nss, 5579 IEEE80211_EHT_MCS_NSS_TX); 5580 mcs_11 = u8_get_bits(mcs->rx_tx_mcs11_max_nss, 5581 IEEE80211_EHT_MCS_NSS_TX); 5582 mcs_13 = u8_get_bits(mcs->rx_tx_mcs13_max_nss, 5583 IEEE80211_EHT_MCS_NSS_TX); 5584 } 5585 5586 /* Enable MCS 14 for NSS 0 */ 5587 if (eht_cap->eht_cap_elem.phy_cap_info[6] & 5588 IEEE80211_EHT_PHY_CAP6_EHT_DUP_6GHZ_SUPP) 5589 mcs_mask[0] |= 0x4000; 5590 5591 /* Enable MCS 15 for NSS 0 */ 5592 mcs_mask[0] |= 0x8000; 5593 5594 for (nss = 0; nss < NL80211_EHT_NSS_MAX; nss++) { 5595 if (!mcs_7) 5596 continue; 5597 mcs_mask[nss] |= 0x00FF; 5598 mcs_7--; 5599 5600 if (!mcs_9) 5601 continue; 5602 mcs_mask[nss] |= 0x0300; 5603 mcs_9--; 5604 5605 if (!mcs_11) 5606 continue; 5607 mcs_mask[nss] |= 0x0C00; 5608 mcs_11--; 5609 5610 if (!mcs_13) 5611 continue; 5612 mcs_mask[nss] |= 0x3000; 5613 mcs_13--; 5614 } 5615 } 5616 5617 static bool eht_set_mcs_mask(struct genl_info *info, struct wireless_dev *wdev, 5618 struct ieee80211_supported_band *sband, 5619 struct nl80211_txrate_eht *txrate, 5620 u16 mcs[NL80211_EHT_NSS_MAX]) 5621 { 5622 const struct ieee80211_sta_he_cap *he_cap; 5623 const struct ieee80211_sta_eht_cap *eht_cap; 5624 u16 tx_mcs_mask[NL80211_EHT_NSS_MAX] = { 0 }; 5625 u8 i, mcs_nss_len; 5626 5627 he_cap = ieee80211_get_he_iftype_cap(sband, wdev->iftype); 5628 if (!he_cap) 5629 return false; 5630 5631 eht_cap = ieee80211_get_eht_iftype_cap(sband, wdev->iftype); 5632 if (!eht_cap) 5633 return false; 5634 5635 /* Checks for MCS 14 */ 5636 if (txrate->mcs[0] & 0x4000) { 5637 if (sband->band != NL80211_BAND_6GHZ) 5638 return false; 5639 5640 if (!(eht_cap->eht_cap_elem.phy_cap_info[6] & 5641 IEEE80211_EHT_PHY_CAP6_EHT_DUP_6GHZ_SUPP)) 5642 return false; 5643 } 5644 5645 mcs_nss_len = ieee80211_eht_mcs_nss_size(&he_cap->he_cap_elem, 5646 &eht_cap->eht_cap_elem, 5647 wdev->iftype == 5648 NL80211_IFTYPE_STATION); 5649 5650 if (mcs_nss_len == 3) { 5651 /* Supported iftypes for setting non-20 MHZ only EHT MCS */ 5652 switch (wdev->iftype) { 5653 case NL80211_IFTYPE_ADHOC: 5654 case NL80211_IFTYPE_AP: 5655 case NL80211_IFTYPE_P2P_GO: 5656 case NL80211_IFTYPE_MESH_POINT: 5657 case NL80211_IFTYPE_OCB: 5658 break; 5659 default: 5660 return false; 5661 } 5662 } 5663 5664 /* Build eht_mcs_mask from EHT and HE capabilities */ 5665 eht_build_mcs_mask(info, eht_cap, mcs_nss_len, tx_mcs_mask); 5666 5667 memset(mcs, 0, sizeof(u16) * NL80211_EHT_NSS_MAX); 5668 for (i = 0; i < NL80211_EHT_NSS_MAX; i++) { 5669 if ((tx_mcs_mask[i] & txrate->mcs[i]) == txrate->mcs[i]) 5670 mcs[i] = txrate->mcs[i]; 5671 else 5672 return false; 5673 } 5674 5675 return true; 5676 } 5677 5678 static int nl80211_parse_tx_bitrate_mask(struct genl_info *info, 5679 struct nlattr *attrs[], 5680 enum nl80211_attrs attr, 5681 struct cfg80211_bitrate_mask *mask, 5682 struct net_device *dev, 5683 bool default_all_enabled, 5684 unsigned int link_id) 5685 { 5686 struct nlattr *tb[NL80211_TXRATE_MAX + 1]; 5687 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 5688 struct wireless_dev *wdev = dev->ieee80211_ptr; 5689 int rem, i; 5690 struct nlattr *tx_rates; 5691 struct ieee80211_supported_band *sband; 5692 u16 vht_tx_mcs_map, he_tx_mcs_map; 5693 5694 memset(mask, 0, sizeof(*mask)); 5695 /* Default to all rates enabled */ 5696 for (i = 0; i < NUM_NL80211_BANDS; i++) { 5697 const struct ieee80211_sta_he_cap *he_cap; 5698 const struct ieee80211_sta_eht_cap *eht_cap; 5699 u8 mcs_nss_len; 5700 5701 if (!default_all_enabled) 5702 break; 5703 5704 sband = rdev->wiphy.bands[i]; 5705 5706 if (!sband) 5707 continue; 5708 5709 mask->control[i].legacy = (1 << sband->n_bitrates) - 1; 5710 memcpy(mask->control[i].ht_mcs, 5711 sband->ht_cap.mcs.rx_mask, 5712 sizeof(mask->control[i].ht_mcs)); 5713 5714 if (sband->vht_cap.vht_supported) { 5715 vht_tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map); 5716 vht_build_mcs_mask(vht_tx_mcs_map, mask->control[i].vht_mcs); 5717 } 5718 5719 he_cap = ieee80211_get_he_iftype_cap(sband, wdev->iftype); 5720 if (!he_cap) 5721 continue; 5722 5723 he_tx_mcs_map = he_get_txmcsmap(info, link_id, he_cap); 5724 he_build_mcs_mask(he_tx_mcs_map, mask->control[i].he_mcs); 5725 5726 mask->control[i].he_gi = 0xFF; 5727 mask->control[i].he_ltf = 0xFF; 5728 5729 eht_cap = ieee80211_get_eht_iftype_cap(sband, wdev->iftype); 5730 if (!eht_cap) 5731 continue; 5732 5733 mcs_nss_len = ieee80211_eht_mcs_nss_size(&he_cap->he_cap_elem, 5734 &eht_cap->eht_cap_elem, 5735 wdev->iftype == 5736 NL80211_IFTYPE_STATION); 5737 5738 eht_build_mcs_mask(info, eht_cap, mcs_nss_len, 5739 mask->control[i].eht_mcs); 5740 5741 mask->control[i].eht_gi = 0xFF; 5742 mask->control[i].eht_ltf = 0xFF; 5743 } 5744 5745 /* if no rates are given set it back to the defaults */ 5746 if (!attrs[attr]) 5747 goto out; 5748 5749 /* The nested attribute uses enum nl80211_band as the index. This maps 5750 * directly to the enum nl80211_band values used in cfg80211. 5751 */ 5752 BUILD_BUG_ON(NL80211_MAX_SUPP_HT_RATES > IEEE80211_HT_MCS_MASK_LEN * 8); 5753 nla_for_each_nested(tx_rates, attrs[attr], rem) { 5754 enum nl80211_band band = nla_type(tx_rates); 5755 int err; 5756 5757 if (band < 0 || band >= NUM_NL80211_BANDS) 5758 return -EINVAL; 5759 sband = rdev->wiphy.bands[band]; 5760 if (sband == NULL) 5761 return -EINVAL; 5762 err = nla_parse_nested_deprecated(tb, NL80211_TXRATE_MAX, 5763 tx_rates, 5764 nl80211_txattr_policy, 5765 info->extack); 5766 if (err) 5767 return err; 5768 if (tb[NL80211_TXRATE_LEGACY]) { 5769 mask->control[band].legacy = rateset_to_mask( 5770 sband, 5771 nla_data(tb[NL80211_TXRATE_LEGACY]), 5772 nla_len(tb[NL80211_TXRATE_LEGACY])); 5773 if ((mask->control[band].legacy == 0) && 5774 nla_len(tb[NL80211_TXRATE_LEGACY])) 5775 return -EINVAL; 5776 } 5777 if (tb[NL80211_TXRATE_HT]) { 5778 if (!ht_rateset_to_mask( 5779 sband, 5780 nla_data(tb[NL80211_TXRATE_HT]), 5781 nla_len(tb[NL80211_TXRATE_HT]), 5782 mask->control[band].ht_mcs)) 5783 return -EINVAL; 5784 } 5785 5786 if (tb[NL80211_TXRATE_VHT]) { 5787 if (!vht_set_mcs_mask( 5788 sband, 5789 nla_data(tb[NL80211_TXRATE_VHT]), 5790 mask->control[band].vht_mcs)) 5791 return -EINVAL; 5792 } 5793 5794 if (tb[NL80211_TXRATE_GI]) { 5795 mask->control[band].gi = 5796 nla_get_u8(tb[NL80211_TXRATE_GI]); 5797 if (mask->control[band].gi > NL80211_TXRATE_FORCE_LGI) 5798 return -EINVAL; 5799 } 5800 if (tb[NL80211_TXRATE_HE] && 5801 !he_set_mcs_mask(info, wdev, sband, 5802 nla_data(tb[NL80211_TXRATE_HE]), 5803 mask->control[band].he_mcs, 5804 link_id)) 5805 return -EINVAL; 5806 5807 if (tb[NL80211_TXRATE_HE_GI]) 5808 mask->control[band].he_gi = 5809 nla_get_u8(tb[NL80211_TXRATE_HE_GI]); 5810 if (tb[NL80211_TXRATE_HE_LTF]) 5811 mask->control[band].he_ltf = 5812 nla_get_u8(tb[NL80211_TXRATE_HE_LTF]); 5813 5814 if (tb[NL80211_TXRATE_EHT] && 5815 !eht_set_mcs_mask(info, wdev, sband, 5816 nla_data(tb[NL80211_TXRATE_EHT]), 5817 mask->control[band].eht_mcs)) 5818 return -EINVAL; 5819 5820 if (tb[NL80211_TXRATE_EHT_GI]) 5821 mask->control[band].eht_gi = 5822 nla_get_u8(tb[NL80211_TXRATE_EHT_GI]); 5823 if (tb[NL80211_TXRATE_EHT_LTF]) 5824 mask->control[band].eht_ltf = 5825 nla_get_u8(tb[NL80211_TXRATE_EHT_LTF]); 5826 5827 if (mask->control[band].legacy == 0) { 5828 /* don't allow empty legacy rates if HT, VHT, HE or EHT 5829 * are not even supported. 5830 */ 5831 if (!(rdev->wiphy.bands[band]->ht_cap.ht_supported || 5832 rdev->wiphy.bands[band]->vht_cap.vht_supported || 5833 ieee80211_get_he_iftype_cap(sband, wdev->iftype) || 5834 ieee80211_get_eht_iftype_cap(sband, wdev->iftype))) 5835 return -EINVAL; 5836 5837 for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++) 5838 if (mask->control[band].ht_mcs[i]) 5839 goto out; 5840 5841 for (i = 0; i < NL80211_VHT_NSS_MAX; i++) 5842 if (mask->control[band].vht_mcs[i]) 5843 goto out; 5844 5845 for (i = 0; i < NL80211_HE_NSS_MAX; i++) 5846 if (mask->control[band].he_mcs[i]) 5847 goto out; 5848 5849 for (i = 0; i < NL80211_EHT_NSS_MAX; i++) 5850 if (mask->control[band].eht_mcs[i]) 5851 goto out; 5852 5853 /* legacy and mcs rates may not be both empty */ 5854 return -EINVAL; 5855 } 5856 } 5857 5858 out: 5859 return 0; 5860 } 5861 5862 static int validate_beacon_tx_rate(struct cfg80211_registered_device *rdev, 5863 enum nl80211_band band, 5864 struct cfg80211_bitrate_mask *beacon_rate) 5865 { 5866 u32 count_ht, count_vht, count_he, count_eht, i; 5867 u32 rate = beacon_rate->control[band].legacy; 5868 5869 /* Allow only one rate */ 5870 if (hweight32(rate) > 1) 5871 return -EINVAL; 5872 5873 count_ht = 0; 5874 for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++) { 5875 if (hweight8(beacon_rate->control[band].ht_mcs[i]) > 1) { 5876 return -EINVAL; 5877 } else if (beacon_rate->control[band].ht_mcs[i]) { 5878 count_ht++; 5879 if (count_ht > 1) 5880 return -EINVAL; 5881 } 5882 if (count_ht && rate) 5883 return -EINVAL; 5884 } 5885 5886 count_vht = 0; 5887 for (i = 0; i < NL80211_VHT_NSS_MAX; i++) { 5888 if (hweight16(beacon_rate->control[band].vht_mcs[i]) > 1) { 5889 return -EINVAL; 5890 } else if (beacon_rate->control[band].vht_mcs[i]) { 5891 count_vht++; 5892 if (count_vht > 1) 5893 return -EINVAL; 5894 } 5895 if (count_vht && rate) 5896 return -EINVAL; 5897 } 5898 5899 count_he = 0; 5900 for (i = 0; i < NL80211_HE_NSS_MAX; i++) { 5901 if (hweight16(beacon_rate->control[band].he_mcs[i]) > 1) { 5902 return -EINVAL; 5903 } else if (beacon_rate->control[band].he_mcs[i]) { 5904 count_he++; 5905 if (count_he > 1) 5906 return -EINVAL; 5907 } 5908 if (count_he && rate) 5909 return -EINVAL; 5910 } 5911 5912 count_eht = 0; 5913 for (i = 0; i < NL80211_EHT_NSS_MAX; i++) { 5914 if (hweight16(beacon_rate->control[band].eht_mcs[i]) > 1) { 5915 return -EINVAL; 5916 } else if (beacon_rate->control[band].eht_mcs[i]) { 5917 count_eht++; 5918 if (count_eht > 1) 5919 return -EINVAL; 5920 } 5921 if (count_eht && rate) 5922 return -EINVAL; 5923 } 5924 5925 if ((count_ht && count_vht && count_he && count_eht) || 5926 (!rate && !count_ht && !count_vht && !count_he && !count_eht)) 5927 return -EINVAL; 5928 5929 if (rate && 5930 !wiphy_ext_feature_isset(&rdev->wiphy, 5931 NL80211_EXT_FEATURE_BEACON_RATE_LEGACY)) 5932 return -EINVAL; 5933 if (count_ht && 5934 !wiphy_ext_feature_isset(&rdev->wiphy, 5935 NL80211_EXT_FEATURE_BEACON_RATE_HT)) 5936 return -EINVAL; 5937 if (count_vht && 5938 !wiphy_ext_feature_isset(&rdev->wiphy, 5939 NL80211_EXT_FEATURE_BEACON_RATE_VHT)) 5940 return -EINVAL; 5941 if (count_he && 5942 !wiphy_ext_feature_isset(&rdev->wiphy, 5943 NL80211_EXT_FEATURE_BEACON_RATE_HE)) 5944 return -EINVAL; 5945 5946 if (count_eht && 5947 !wiphy_ext_feature_isset(&rdev->wiphy, 5948 NL80211_EXT_FEATURE_BEACON_RATE_EHT)) 5949 return -EINVAL; 5950 5951 return 0; 5952 } 5953 5954 static int nl80211_parse_mbssid_config(struct wiphy *wiphy, 5955 struct net_device *dev, 5956 unsigned int link_id, 5957 struct nlattr *attrs, 5958 struct cfg80211_mbssid_config *config, 5959 u8 num_elems) 5960 { 5961 struct nlattr *tb[NL80211_MBSSID_CONFIG_ATTR_MAX + 1]; 5962 int tx_link_id = -1; 5963 5964 if (!wiphy->mbssid_max_interfaces) 5965 return -EOPNOTSUPP; 5966 5967 if (nla_parse_nested(tb, NL80211_MBSSID_CONFIG_ATTR_MAX, attrs, NULL, 5968 NULL) || 5969 !tb[NL80211_MBSSID_CONFIG_ATTR_INDEX]) 5970 return -EINVAL; 5971 5972 config->ema = nla_get_flag(tb[NL80211_MBSSID_CONFIG_ATTR_EMA]); 5973 if (config->ema) { 5974 if (!wiphy->ema_max_profile_periodicity) 5975 return -EOPNOTSUPP; 5976 5977 if (num_elems > wiphy->ema_max_profile_periodicity) 5978 return -EINVAL; 5979 } 5980 5981 config->index = nla_get_u8(tb[NL80211_MBSSID_CONFIG_ATTR_INDEX]); 5982 if (config->index >= wiphy->mbssid_max_interfaces || 5983 (!config->index && !num_elems)) 5984 return -EINVAL; 5985 5986 if (tb[NL80211_MBSSID_CONFIG_ATTR_TX_LINK_ID]) 5987 tx_link_id = nla_get_u8(tb[NL80211_MBSSID_CONFIG_ATTR_TX_LINK_ID]); 5988 5989 if (tb[NL80211_MBSSID_CONFIG_ATTR_TX_IFINDEX]) { 5990 u32 tx_ifindex = 5991 nla_get_u32(tb[NL80211_MBSSID_CONFIG_ATTR_TX_IFINDEX]); 5992 5993 if ((!config->index && tx_ifindex != dev->ifindex) || 5994 (config->index && tx_ifindex == dev->ifindex)) 5995 return -EINVAL; 5996 5997 if (tx_ifindex != dev->ifindex) { 5998 struct net_device *tx_netdev = 5999 dev_get_by_index(wiphy_net(wiphy), tx_ifindex); 6000 6001 if (!tx_netdev || !tx_netdev->ieee80211_ptr || 6002 tx_netdev->ieee80211_ptr->wiphy != wiphy || 6003 tx_netdev->ieee80211_ptr->iftype != 6004 NL80211_IFTYPE_AP) { 6005 dev_put(tx_netdev); 6006 return -EINVAL; 6007 } 6008 6009 config->tx_wdev = tx_netdev->ieee80211_ptr; 6010 /* Caller should call dev_put(config->tx_wdev) from this point */ 6011 6012 if (config->tx_wdev->valid_links) { 6013 if (tx_link_id == -1 || 6014 !(config->tx_wdev->valid_links & BIT(tx_link_id))) 6015 return -ENOLINK; 6016 6017 config->tx_link_id = tx_link_id; 6018 } 6019 } else { 6020 if (tx_link_id >= 0 && tx_link_id != link_id) 6021 return -EINVAL; 6022 6023 config->tx_wdev = dev->ieee80211_ptr; 6024 } 6025 } else if (!config->index) { 6026 if (tx_link_id >= 0 && tx_link_id != link_id) 6027 return -EINVAL; 6028 6029 config->tx_wdev = dev->ieee80211_ptr; 6030 } else { 6031 return -EINVAL; 6032 } 6033 6034 return 0; 6035 } 6036 6037 static struct cfg80211_mbssid_elems * 6038 nl80211_parse_mbssid_elems(struct wiphy *wiphy, struct nlattr *attrs) 6039 { 6040 struct nlattr *nl_elems; 6041 struct cfg80211_mbssid_elems *elems; 6042 int rem_elems; 6043 u8 i = 0, num_elems = 0; 6044 6045 if (!wiphy->mbssid_max_interfaces) 6046 return ERR_PTR(-EINVAL); 6047 6048 nla_for_each_nested(nl_elems, attrs, rem_elems) { 6049 if (num_elems >= 255) 6050 return ERR_PTR(-EINVAL); 6051 num_elems++; 6052 } 6053 6054 elems = kzalloc(struct_size(elems, elem, num_elems), GFP_KERNEL); 6055 if (!elems) 6056 return ERR_PTR(-ENOMEM); 6057 elems->cnt = num_elems; 6058 6059 nla_for_each_nested(nl_elems, attrs, rem_elems) { 6060 elems->elem[i].data = nla_data(nl_elems); 6061 elems->elem[i].len = nla_len(nl_elems); 6062 i++; 6063 } 6064 return elems; 6065 } 6066 6067 static struct cfg80211_rnr_elems * 6068 nl80211_parse_rnr_elems(struct wiphy *wiphy, struct nlattr *attrs, 6069 struct netlink_ext_ack *extack) 6070 { 6071 struct nlattr *nl_elems; 6072 struct cfg80211_rnr_elems *elems; 6073 int rem_elems; 6074 u8 i = 0, num_elems = 0; 6075 6076 nla_for_each_nested(nl_elems, attrs, rem_elems) { 6077 int ret; 6078 6079 ret = validate_ie_attr(nl_elems, extack); 6080 if (ret) 6081 return ERR_PTR(ret); 6082 6083 num_elems++; 6084 } 6085 6086 elems = kzalloc(struct_size(elems, elem, num_elems), GFP_KERNEL); 6087 if (!elems) 6088 return ERR_PTR(-ENOMEM); 6089 elems->cnt = num_elems; 6090 6091 nla_for_each_nested(nl_elems, attrs, rem_elems) { 6092 elems->elem[i].data = nla_data(nl_elems); 6093 elems->elem[i].len = nla_len(nl_elems); 6094 i++; 6095 } 6096 return elems; 6097 } 6098 6099 static int nl80211_parse_he_bss_color(struct nlattr *attrs, 6100 struct cfg80211_he_bss_color *he_bss_color) 6101 { 6102 struct nlattr *tb[NL80211_HE_BSS_COLOR_ATTR_MAX + 1]; 6103 int err; 6104 6105 err = nla_parse_nested(tb, NL80211_HE_BSS_COLOR_ATTR_MAX, attrs, 6106 he_bss_color_policy, NULL); 6107 if (err) 6108 return err; 6109 6110 if (!tb[NL80211_HE_BSS_COLOR_ATTR_COLOR]) 6111 return -EINVAL; 6112 6113 he_bss_color->color = 6114 nla_get_u8(tb[NL80211_HE_BSS_COLOR_ATTR_COLOR]); 6115 he_bss_color->enabled = 6116 !nla_get_flag(tb[NL80211_HE_BSS_COLOR_ATTR_DISABLED]); 6117 he_bss_color->partial = 6118 nla_get_flag(tb[NL80211_HE_BSS_COLOR_ATTR_PARTIAL]); 6119 6120 return 0; 6121 } 6122 6123 static int nl80211_parse_beacon(struct cfg80211_registered_device *rdev, 6124 struct nlattr *attrs[], 6125 struct cfg80211_beacon_data *bcn, 6126 struct netlink_ext_ack *extack) 6127 { 6128 bool haveinfo = false; 6129 int err; 6130 6131 memset(bcn, 0, sizeof(*bcn)); 6132 6133 bcn->link_id = nl80211_link_id(attrs); 6134 6135 if (attrs[NL80211_ATTR_BEACON_HEAD]) { 6136 bcn->head = nla_data(attrs[NL80211_ATTR_BEACON_HEAD]); 6137 bcn->head_len = nla_len(attrs[NL80211_ATTR_BEACON_HEAD]); 6138 if (!bcn->head_len) 6139 return -EINVAL; 6140 haveinfo = true; 6141 } 6142 6143 if (attrs[NL80211_ATTR_BEACON_TAIL]) { 6144 bcn->tail = nla_data(attrs[NL80211_ATTR_BEACON_TAIL]); 6145 bcn->tail_len = nla_len(attrs[NL80211_ATTR_BEACON_TAIL]); 6146 haveinfo = true; 6147 } 6148 6149 if (!haveinfo) 6150 return -EINVAL; 6151 6152 if (attrs[NL80211_ATTR_IE]) { 6153 bcn->beacon_ies = nla_data(attrs[NL80211_ATTR_IE]); 6154 bcn->beacon_ies_len = nla_len(attrs[NL80211_ATTR_IE]); 6155 } 6156 6157 if (attrs[NL80211_ATTR_IE_PROBE_RESP]) { 6158 bcn->proberesp_ies = 6159 nla_data(attrs[NL80211_ATTR_IE_PROBE_RESP]); 6160 bcn->proberesp_ies_len = 6161 nla_len(attrs[NL80211_ATTR_IE_PROBE_RESP]); 6162 } 6163 6164 if (attrs[NL80211_ATTR_IE_ASSOC_RESP]) { 6165 bcn->assocresp_ies = 6166 nla_data(attrs[NL80211_ATTR_IE_ASSOC_RESP]); 6167 bcn->assocresp_ies_len = 6168 nla_len(attrs[NL80211_ATTR_IE_ASSOC_RESP]); 6169 } 6170 6171 if (attrs[NL80211_ATTR_PROBE_RESP]) { 6172 bcn->probe_resp = nla_data(attrs[NL80211_ATTR_PROBE_RESP]); 6173 bcn->probe_resp_len = nla_len(attrs[NL80211_ATTR_PROBE_RESP]); 6174 } 6175 6176 if (attrs[NL80211_ATTR_FTM_RESPONDER]) { 6177 struct nlattr *tb[NL80211_FTM_RESP_ATTR_MAX + 1]; 6178 6179 err = nla_parse_nested_deprecated(tb, 6180 NL80211_FTM_RESP_ATTR_MAX, 6181 attrs[NL80211_ATTR_FTM_RESPONDER], 6182 NULL, NULL); 6183 if (err) 6184 return err; 6185 6186 if (tb[NL80211_FTM_RESP_ATTR_ENABLED] && 6187 wiphy_ext_feature_isset(&rdev->wiphy, 6188 NL80211_EXT_FEATURE_ENABLE_FTM_RESPONDER)) 6189 bcn->ftm_responder = 1; 6190 else 6191 return -EOPNOTSUPP; 6192 6193 if (tb[NL80211_FTM_RESP_ATTR_LCI]) { 6194 bcn->lci = nla_data(tb[NL80211_FTM_RESP_ATTR_LCI]); 6195 bcn->lci_len = nla_len(tb[NL80211_FTM_RESP_ATTR_LCI]); 6196 } 6197 6198 if (tb[NL80211_FTM_RESP_ATTR_CIVICLOC]) { 6199 bcn->civicloc = nla_data(tb[NL80211_FTM_RESP_ATTR_CIVICLOC]); 6200 bcn->civicloc_len = nla_len(tb[NL80211_FTM_RESP_ATTR_CIVICLOC]); 6201 } 6202 } else { 6203 bcn->ftm_responder = -1; 6204 } 6205 6206 if (attrs[NL80211_ATTR_HE_BSS_COLOR]) { 6207 err = nl80211_parse_he_bss_color(attrs[NL80211_ATTR_HE_BSS_COLOR], 6208 &bcn->he_bss_color); 6209 if (err) 6210 return err; 6211 bcn->he_bss_color_valid = true; 6212 } 6213 6214 if (attrs[NL80211_ATTR_MBSSID_ELEMS]) { 6215 struct cfg80211_mbssid_elems *mbssid = 6216 nl80211_parse_mbssid_elems(&rdev->wiphy, 6217 attrs[NL80211_ATTR_MBSSID_ELEMS]); 6218 6219 if (IS_ERR(mbssid)) 6220 return PTR_ERR(mbssid); 6221 6222 bcn->mbssid_ies = mbssid; 6223 6224 if (bcn->mbssid_ies && attrs[NL80211_ATTR_EMA_RNR_ELEMS]) { 6225 struct cfg80211_rnr_elems *rnr = 6226 nl80211_parse_rnr_elems(&rdev->wiphy, 6227 attrs[NL80211_ATTR_EMA_RNR_ELEMS], 6228 extack); 6229 6230 if (IS_ERR(rnr)) 6231 return PTR_ERR(rnr); 6232 6233 if (rnr && rnr->cnt < bcn->mbssid_ies->cnt) 6234 return -EINVAL; 6235 6236 bcn->rnr_ies = rnr; 6237 } 6238 } 6239 6240 return 0; 6241 } 6242 6243 static int nl80211_parse_he_obss_pd(struct nlattr *attrs, 6244 struct ieee80211_he_obss_pd *he_obss_pd) 6245 { 6246 struct nlattr *tb[NL80211_HE_OBSS_PD_ATTR_MAX + 1]; 6247 int err; 6248 6249 err = nla_parse_nested(tb, NL80211_HE_OBSS_PD_ATTR_MAX, attrs, 6250 he_obss_pd_policy, NULL); 6251 if (err) 6252 return err; 6253 6254 if (!tb[NL80211_HE_OBSS_PD_ATTR_SR_CTRL]) 6255 return -EINVAL; 6256 6257 he_obss_pd->sr_ctrl = nla_get_u8(tb[NL80211_HE_OBSS_PD_ATTR_SR_CTRL]); 6258 6259 if (tb[NL80211_HE_OBSS_PD_ATTR_MIN_OFFSET]) 6260 he_obss_pd->min_offset = 6261 nla_get_u8(tb[NL80211_HE_OBSS_PD_ATTR_MIN_OFFSET]); 6262 if (tb[NL80211_HE_OBSS_PD_ATTR_MAX_OFFSET]) 6263 he_obss_pd->max_offset = 6264 nla_get_u8(tb[NL80211_HE_OBSS_PD_ATTR_MAX_OFFSET]); 6265 if (tb[NL80211_HE_OBSS_PD_ATTR_NON_SRG_MAX_OFFSET]) 6266 he_obss_pd->non_srg_max_offset = 6267 nla_get_u8(tb[NL80211_HE_OBSS_PD_ATTR_NON_SRG_MAX_OFFSET]); 6268 6269 if (he_obss_pd->min_offset > he_obss_pd->max_offset) 6270 return -EINVAL; 6271 6272 if (tb[NL80211_HE_OBSS_PD_ATTR_BSS_COLOR_BITMAP]) 6273 memcpy(he_obss_pd->bss_color_bitmap, 6274 nla_data(tb[NL80211_HE_OBSS_PD_ATTR_BSS_COLOR_BITMAP]), 6275 sizeof(he_obss_pd->bss_color_bitmap)); 6276 6277 if (tb[NL80211_HE_OBSS_PD_ATTR_PARTIAL_BSSID_BITMAP]) 6278 memcpy(he_obss_pd->partial_bssid_bitmap, 6279 nla_data(tb[NL80211_HE_OBSS_PD_ATTR_PARTIAL_BSSID_BITMAP]), 6280 sizeof(he_obss_pd->partial_bssid_bitmap)); 6281 6282 he_obss_pd->enable = true; 6283 6284 return 0; 6285 } 6286 6287 static int nl80211_parse_fils_discovery(struct cfg80211_registered_device *rdev, 6288 struct nlattr *attrs, 6289 struct cfg80211_fils_discovery *fd) 6290 { 6291 struct nlattr *tb[NL80211_FILS_DISCOVERY_ATTR_MAX + 1]; 6292 int ret; 6293 6294 if (!wiphy_ext_feature_isset(&rdev->wiphy, 6295 NL80211_EXT_FEATURE_FILS_DISCOVERY)) 6296 return -EINVAL; 6297 6298 ret = nla_parse_nested(tb, NL80211_FILS_DISCOVERY_ATTR_MAX, attrs, 6299 NULL, NULL); 6300 if (ret) 6301 return ret; 6302 6303 if (!tb[NL80211_FILS_DISCOVERY_ATTR_INT_MIN] && 6304 !tb[NL80211_FILS_DISCOVERY_ATTR_INT_MAX] && 6305 !tb[NL80211_FILS_DISCOVERY_ATTR_TMPL]) { 6306 fd->update = true; 6307 return 0; 6308 } 6309 6310 if (!tb[NL80211_FILS_DISCOVERY_ATTR_INT_MIN] || 6311 !tb[NL80211_FILS_DISCOVERY_ATTR_INT_MAX] || 6312 !tb[NL80211_FILS_DISCOVERY_ATTR_TMPL]) 6313 return -EINVAL; 6314 6315 fd->tmpl_len = nla_len(tb[NL80211_FILS_DISCOVERY_ATTR_TMPL]); 6316 fd->tmpl = nla_data(tb[NL80211_FILS_DISCOVERY_ATTR_TMPL]); 6317 fd->min_interval = nla_get_u32(tb[NL80211_FILS_DISCOVERY_ATTR_INT_MIN]); 6318 fd->max_interval = nla_get_u32(tb[NL80211_FILS_DISCOVERY_ATTR_INT_MAX]); 6319 fd->update = true; 6320 return 0; 6321 } 6322 6323 static int 6324 nl80211_parse_unsol_bcast_probe_resp(struct cfg80211_registered_device *rdev, 6325 struct nlattr *attrs, 6326 struct cfg80211_unsol_bcast_probe_resp *presp) 6327 { 6328 struct nlattr *tb[NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_MAX + 1]; 6329 int ret; 6330 6331 if (!wiphy_ext_feature_isset(&rdev->wiphy, 6332 NL80211_EXT_FEATURE_UNSOL_BCAST_PROBE_RESP)) 6333 return -EINVAL; 6334 6335 ret = nla_parse_nested(tb, NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_MAX, 6336 attrs, NULL, NULL); 6337 if (ret) 6338 return ret; 6339 6340 if (!tb[NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_INT] && 6341 !tb[NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_TMPL]) { 6342 presp->update = true; 6343 return 0; 6344 } 6345 6346 if (!tb[NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_INT] || 6347 !tb[NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_TMPL]) 6348 return -EINVAL; 6349 6350 presp->tmpl = nla_data(tb[NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_TMPL]); 6351 presp->tmpl_len = nla_len(tb[NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_TMPL]); 6352 presp->interval = nla_get_u32(tb[NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_INT]); 6353 presp->update = true; 6354 return 0; 6355 } 6356 6357 static void nl80211_check_ap_rate_selectors(struct cfg80211_ap_settings *params, 6358 const struct element *rates) 6359 { 6360 int i; 6361 6362 if (!rates) 6363 return; 6364 6365 for (i = 0; i < rates->datalen; i++) { 6366 if (rates->data[i] == BSS_MEMBERSHIP_SELECTOR_HT_PHY) 6367 params->ht_required = true; 6368 if (rates->data[i] == BSS_MEMBERSHIP_SELECTOR_VHT_PHY) 6369 params->vht_required = true; 6370 if (rates->data[i] == BSS_MEMBERSHIP_SELECTOR_HE_PHY) 6371 params->he_required = true; 6372 if (rates->data[i] == BSS_MEMBERSHIP_SELECTOR_SAE_H2E) 6373 params->sae_h2e_required = true; 6374 } 6375 } 6376 6377 /* 6378 * Since the nl80211 API didn't include, from the beginning, attributes about 6379 * HT/VHT requirements/capabilities, we parse them out of the IEs for the 6380 * benefit of drivers that rebuild IEs in the firmware. 6381 */ 6382 static int nl80211_calculate_ap_params(struct cfg80211_ap_settings *params) 6383 { 6384 const struct cfg80211_beacon_data *bcn = ¶ms->beacon; 6385 size_t ies_len = bcn->tail_len; 6386 const u8 *ies = bcn->tail; 6387 const struct element *rates; 6388 const struct element *cap; 6389 6390 rates = cfg80211_find_elem(WLAN_EID_SUPP_RATES, ies, ies_len); 6391 nl80211_check_ap_rate_selectors(params, rates); 6392 6393 rates = cfg80211_find_elem(WLAN_EID_EXT_SUPP_RATES, ies, ies_len); 6394 nl80211_check_ap_rate_selectors(params, rates); 6395 6396 cap = cfg80211_find_elem(WLAN_EID_HT_CAPABILITY, ies, ies_len); 6397 if (cap && cap->datalen >= sizeof(*params->ht_cap)) 6398 params->ht_cap = (void *)cap->data; 6399 cap = cfg80211_find_elem(WLAN_EID_VHT_CAPABILITY, ies, ies_len); 6400 if (cap && cap->datalen >= sizeof(*params->vht_cap)) 6401 params->vht_cap = (void *)cap->data; 6402 cap = cfg80211_find_ext_elem(WLAN_EID_EXT_HE_CAPABILITY, ies, ies_len); 6403 if (cap && cap->datalen >= sizeof(*params->he_cap) + 1) 6404 params->he_cap = (void *)(cap->data + 1); 6405 cap = cfg80211_find_ext_elem(WLAN_EID_EXT_HE_OPERATION, ies, ies_len); 6406 if (cap && cap->datalen >= sizeof(*params->he_oper) + 1) 6407 params->he_oper = (void *)(cap->data + 1); 6408 cap = cfg80211_find_ext_elem(WLAN_EID_EXT_EHT_CAPABILITY, ies, ies_len); 6409 if (cap) { 6410 if (!cap->datalen) 6411 return -EINVAL; 6412 params->eht_cap = (void *)(cap->data + 1); 6413 if (!ieee80211_eht_capa_size_ok((const u8 *)params->he_cap, 6414 (const u8 *)params->eht_cap, 6415 cap->datalen - 1, true)) 6416 return -EINVAL; 6417 } 6418 cap = cfg80211_find_ext_elem(WLAN_EID_EXT_EHT_OPERATION, ies, ies_len); 6419 if (cap) { 6420 if (!cap->datalen) 6421 return -EINVAL; 6422 params->eht_oper = (void *)(cap->data + 1); 6423 if (!ieee80211_eht_oper_size_ok((const u8 *)params->eht_oper, 6424 cap->datalen - 1)) 6425 return -EINVAL; 6426 } 6427 return 0; 6428 } 6429 6430 static bool nl80211_get_ap_channel(struct cfg80211_registered_device *rdev, 6431 struct cfg80211_ap_settings *params) 6432 { 6433 struct wireless_dev *wdev; 6434 6435 list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) { 6436 if (wdev->iftype != NL80211_IFTYPE_AP && 6437 wdev->iftype != NL80211_IFTYPE_P2P_GO) 6438 continue; 6439 6440 if (!wdev->u.ap.preset_chandef.chan) 6441 continue; 6442 6443 params->chandef = wdev->u.ap.preset_chandef; 6444 return true; 6445 } 6446 6447 return false; 6448 } 6449 6450 static bool nl80211_valid_auth_type(struct cfg80211_registered_device *rdev, 6451 enum nl80211_auth_type auth_type, 6452 enum nl80211_commands cmd) 6453 { 6454 if (auth_type > NL80211_AUTHTYPE_MAX) 6455 return false; 6456 6457 switch (cmd) { 6458 case NL80211_CMD_AUTHENTICATE: 6459 if (!(rdev->wiphy.features & NL80211_FEATURE_SAE) && 6460 auth_type == NL80211_AUTHTYPE_SAE) 6461 return false; 6462 if (!wiphy_ext_feature_isset(&rdev->wiphy, 6463 NL80211_EXT_FEATURE_FILS_STA) && 6464 (auth_type == NL80211_AUTHTYPE_FILS_SK || 6465 auth_type == NL80211_AUTHTYPE_FILS_SK_PFS || 6466 auth_type == NL80211_AUTHTYPE_FILS_PK)) 6467 return false; 6468 return true; 6469 case NL80211_CMD_CONNECT: 6470 if (!(rdev->wiphy.features & NL80211_FEATURE_SAE) && 6471 !wiphy_ext_feature_isset(&rdev->wiphy, 6472 NL80211_EXT_FEATURE_SAE_OFFLOAD) && 6473 auth_type == NL80211_AUTHTYPE_SAE) 6474 return false; 6475 6476 /* FILS with SK PFS or PK not supported yet */ 6477 if (auth_type == NL80211_AUTHTYPE_FILS_SK_PFS || 6478 auth_type == NL80211_AUTHTYPE_FILS_PK) 6479 return false; 6480 if (!wiphy_ext_feature_isset( 6481 &rdev->wiphy, 6482 NL80211_EXT_FEATURE_FILS_SK_OFFLOAD) && 6483 auth_type == NL80211_AUTHTYPE_FILS_SK) 6484 return false; 6485 return true; 6486 case NL80211_CMD_START_AP: 6487 if (!wiphy_ext_feature_isset(&rdev->wiphy, 6488 NL80211_EXT_FEATURE_SAE_OFFLOAD_AP) && 6489 auth_type == NL80211_AUTHTYPE_SAE) 6490 return false; 6491 /* FILS not supported yet */ 6492 if (auth_type == NL80211_AUTHTYPE_FILS_SK || 6493 auth_type == NL80211_AUTHTYPE_FILS_SK_PFS || 6494 auth_type == NL80211_AUTHTYPE_FILS_PK) 6495 return false; 6496 return true; 6497 default: 6498 return false; 6499 } 6500 } 6501 6502 static void nl80211_send_ap_started(struct wireless_dev *wdev, 6503 unsigned int link_id) 6504 { 6505 struct wiphy *wiphy = wdev->wiphy; 6506 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 6507 struct sk_buff *msg; 6508 void *hdr; 6509 6510 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 6511 if (!msg) 6512 return; 6513 6514 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_START_AP); 6515 if (!hdr) 6516 goto out; 6517 6518 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 6519 nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex) || 6520 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev), 6521 NL80211_ATTR_PAD) || 6522 (wdev->u.ap.ssid_len && 6523 nla_put(msg, NL80211_ATTR_SSID, wdev->u.ap.ssid_len, 6524 wdev->u.ap.ssid)) || 6525 (wdev->valid_links && 6526 nla_put_u8(msg, NL80211_ATTR_MLO_LINK_ID, link_id))) 6527 goto out; 6528 6529 genlmsg_end(msg, hdr); 6530 6531 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(wiphy), msg, 0, 6532 NL80211_MCGRP_MLME, GFP_KERNEL); 6533 return; 6534 out: 6535 nlmsg_free(msg); 6536 } 6537 6538 static int nl80211_validate_ap_phy_operation(struct cfg80211_ap_settings *params) 6539 { 6540 struct ieee80211_channel *channel = params->chandef.chan; 6541 6542 if ((params->he_cap || params->he_oper) && 6543 (channel->flags & IEEE80211_CHAN_NO_HE)) 6544 return -EOPNOTSUPP; 6545 6546 if ((params->eht_cap || params->eht_oper) && 6547 (channel->flags & IEEE80211_CHAN_NO_EHT)) 6548 return -EOPNOTSUPP; 6549 6550 return 0; 6551 } 6552 6553 static int 6554 nl80211_parse_s1g_short_beacon(struct cfg80211_registered_device *rdev, 6555 struct nlattr *attrs, 6556 struct cfg80211_s1g_short_beacon *sb) 6557 { 6558 struct nlattr *tb[NL80211_S1G_SHORT_BEACON_ATTR_MAX + 1]; 6559 int ret; 6560 6561 if (!rdev->wiphy.bands[NL80211_BAND_S1GHZ]) 6562 return -EINVAL; 6563 6564 ret = nla_parse_nested(tb, NL80211_S1G_SHORT_BEACON_ATTR_MAX, attrs, 6565 NULL, NULL); 6566 if (ret) 6567 return ret; 6568 6569 /* Short beacon tail is optional (i.e might only include the TIM) */ 6570 if (!tb[NL80211_S1G_SHORT_BEACON_ATTR_HEAD]) 6571 return -EINVAL; 6572 6573 sb->short_head = nla_data(tb[NL80211_S1G_SHORT_BEACON_ATTR_HEAD]); 6574 sb->short_head_len = nla_len(tb[NL80211_S1G_SHORT_BEACON_ATTR_HEAD]); 6575 sb->short_tail_len = 0; 6576 6577 if (tb[NL80211_S1G_SHORT_BEACON_ATTR_TAIL]) { 6578 sb->short_tail = 6579 nla_data(tb[NL80211_S1G_SHORT_BEACON_ATTR_TAIL]); 6580 sb->short_tail_len = 6581 nla_len(tb[NL80211_S1G_SHORT_BEACON_ATTR_TAIL]); 6582 } 6583 6584 sb->update = true; 6585 return 0; 6586 } 6587 6588 static int nl80211_start_ap(struct sk_buff *skb, struct genl_info *info) 6589 { 6590 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 6591 struct cfg80211_beaconing_check_config beacon_check = {}; 6592 unsigned int link_id = nl80211_link_id(info->attrs); 6593 struct net_device *dev = info->user_ptr[1]; 6594 struct wireless_dev *wdev = dev->ieee80211_ptr; 6595 struct cfg80211_ap_settings *params; 6596 int err; 6597 6598 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP && 6599 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) 6600 return -EOPNOTSUPP; 6601 6602 if (!rdev->ops->start_ap) 6603 return -EOPNOTSUPP; 6604 6605 if (wdev->links[link_id].cac_started) 6606 return -EBUSY; 6607 6608 if (wdev->links[link_id].ap.beacon_interval) 6609 return -EALREADY; 6610 6611 /* these are required for START_AP */ 6612 if (!info->attrs[NL80211_ATTR_BEACON_INTERVAL] || 6613 !info->attrs[NL80211_ATTR_DTIM_PERIOD] || 6614 !info->attrs[NL80211_ATTR_BEACON_HEAD]) 6615 return -EINVAL; 6616 6617 if (info->attrs[NL80211_ATTR_SMPS_MODE] && 6618 nla_get_u8(info->attrs[NL80211_ATTR_SMPS_MODE]) != NL80211_SMPS_OFF) 6619 return -EOPNOTSUPP; 6620 6621 params = kzalloc(sizeof(*params), GFP_KERNEL); 6622 if (!params) 6623 return -ENOMEM; 6624 6625 err = nl80211_parse_beacon(rdev, info->attrs, ¶ms->beacon, 6626 info->extack); 6627 if (err) 6628 goto out; 6629 6630 params->beacon_interval = 6631 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]); 6632 params->dtim_period = 6633 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]); 6634 6635 err = cfg80211_validate_beacon_int(rdev, dev->ieee80211_ptr->iftype, 6636 params->beacon_interval); 6637 if (err) 6638 goto out; 6639 6640 /* 6641 * In theory, some of these attributes should be required here 6642 * but since they were not used when the command was originally 6643 * added, keep them optional for old user space programs to let 6644 * them continue to work with drivers that do not need the 6645 * additional information -- drivers must check! 6646 */ 6647 if (info->attrs[NL80211_ATTR_SSID]) { 6648 params->ssid = nla_data(info->attrs[NL80211_ATTR_SSID]); 6649 params->ssid_len = 6650 nla_len(info->attrs[NL80211_ATTR_SSID]); 6651 if (params->ssid_len == 0) { 6652 err = -EINVAL; 6653 goto out; 6654 } 6655 6656 if (wdev->u.ap.ssid_len && 6657 (wdev->u.ap.ssid_len != params->ssid_len || 6658 memcmp(wdev->u.ap.ssid, params->ssid, params->ssid_len))) { 6659 /* require identical SSID for MLO */ 6660 err = -EINVAL; 6661 goto out; 6662 } 6663 } else if (wdev->valid_links) { 6664 /* require SSID for MLO */ 6665 err = -EINVAL; 6666 goto out; 6667 } 6668 6669 if (info->attrs[NL80211_ATTR_HIDDEN_SSID]) 6670 params->hidden_ssid = nla_get_u32( 6671 info->attrs[NL80211_ATTR_HIDDEN_SSID]); 6672 6673 params->privacy = !!info->attrs[NL80211_ATTR_PRIVACY]; 6674 6675 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) { 6676 params->auth_type = nla_get_u32( 6677 info->attrs[NL80211_ATTR_AUTH_TYPE]); 6678 if (!nl80211_valid_auth_type(rdev, params->auth_type, 6679 NL80211_CMD_START_AP)) { 6680 err = -EINVAL; 6681 goto out; 6682 } 6683 } else 6684 params->auth_type = NL80211_AUTHTYPE_AUTOMATIC; 6685 6686 err = nl80211_crypto_settings(rdev, info, ¶ms->crypto, 6687 NL80211_MAX_NR_CIPHER_SUITES); 6688 if (err) 6689 goto out; 6690 6691 if (info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]) { 6692 if (!(rdev->wiphy.features & NL80211_FEATURE_INACTIVITY_TIMER)) { 6693 err = -EOPNOTSUPP; 6694 goto out; 6695 } 6696 params->inactivity_timeout = nla_get_u16( 6697 info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]); 6698 } 6699 6700 if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) { 6701 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) { 6702 err = -EINVAL; 6703 goto out; 6704 } 6705 params->p2p_ctwindow = 6706 nla_get_u8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]); 6707 if (params->p2p_ctwindow != 0 && 6708 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN)) { 6709 err = -EINVAL; 6710 goto out; 6711 } 6712 } 6713 6714 if (info->attrs[NL80211_ATTR_P2P_OPPPS]) { 6715 u8 tmp; 6716 6717 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) { 6718 err = -EINVAL; 6719 goto out; 6720 } 6721 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]); 6722 params->p2p_opp_ps = tmp; 6723 if (params->p2p_opp_ps != 0 && 6724 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS)) { 6725 err = -EINVAL; 6726 goto out; 6727 } 6728 } 6729 6730 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) { 6731 err = nl80211_parse_chandef(rdev, info, ¶ms->chandef); 6732 if (err) 6733 goto out; 6734 } else if (wdev->valid_links) { 6735 /* with MLD need to specify the channel configuration */ 6736 err = -EINVAL; 6737 goto out; 6738 } else if (wdev->u.ap.preset_chandef.chan) { 6739 params->chandef = wdev->u.ap.preset_chandef; 6740 } else if (!nl80211_get_ap_channel(rdev, params)) { 6741 err = -EINVAL; 6742 goto out; 6743 } 6744 6745 beacon_check.iftype = wdev->iftype; 6746 beacon_check.relax = true; 6747 beacon_check.reg_power = 6748 cfg80211_get_6ghz_power_type(params->beacon.tail, 6749 params->beacon.tail_len); 6750 if (!cfg80211_reg_check_beaconing(&rdev->wiphy, ¶ms->chandef, 6751 &beacon_check)) { 6752 err = -EINVAL; 6753 goto out; 6754 } 6755 6756 if (info->attrs[NL80211_ATTR_TX_RATES]) { 6757 err = nl80211_parse_tx_bitrate_mask(info, info->attrs, 6758 NL80211_ATTR_TX_RATES, 6759 ¶ms->beacon_rate, 6760 dev, false, link_id); 6761 if (err) 6762 goto out; 6763 6764 err = validate_beacon_tx_rate(rdev, params->chandef.chan->band, 6765 ¶ms->beacon_rate); 6766 if (err) 6767 goto out; 6768 } 6769 6770 params->pbss = nla_get_flag(info->attrs[NL80211_ATTR_PBSS]); 6771 if (params->pbss && !rdev->wiphy.bands[NL80211_BAND_60GHZ]) { 6772 err = -EOPNOTSUPP; 6773 goto out; 6774 } 6775 6776 if (info->attrs[NL80211_ATTR_ACL_POLICY]) { 6777 params->acl = parse_acl_data(&rdev->wiphy, info); 6778 if (IS_ERR(params->acl)) { 6779 err = PTR_ERR(params->acl); 6780 params->acl = NULL; 6781 goto out; 6782 } 6783 } 6784 6785 params->twt_responder = 6786 nla_get_flag(info->attrs[NL80211_ATTR_TWT_RESPONDER]); 6787 6788 if (info->attrs[NL80211_ATTR_HE_OBSS_PD]) { 6789 err = nl80211_parse_he_obss_pd( 6790 info->attrs[NL80211_ATTR_HE_OBSS_PD], 6791 ¶ms->he_obss_pd); 6792 if (err) 6793 goto out; 6794 } 6795 6796 if (info->attrs[NL80211_ATTR_FILS_DISCOVERY]) { 6797 err = nl80211_parse_fils_discovery(rdev, 6798 info->attrs[NL80211_ATTR_FILS_DISCOVERY], 6799 ¶ms->fils_discovery); 6800 if (err) 6801 goto out; 6802 } 6803 6804 if (info->attrs[NL80211_ATTR_UNSOL_BCAST_PROBE_RESP]) { 6805 err = nl80211_parse_unsol_bcast_probe_resp( 6806 rdev, info->attrs[NL80211_ATTR_UNSOL_BCAST_PROBE_RESP], 6807 ¶ms->unsol_bcast_probe_resp); 6808 if (err) 6809 goto out; 6810 } 6811 6812 if (info->attrs[NL80211_ATTR_MBSSID_CONFIG]) { 6813 err = nl80211_parse_mbssid_config(&rdev->wiphy, dev, link_id, 6814 info->attrs[NL80211_ATTR_MBSSID_CONFIG], 6815 ¶ms->mbssid_config, 6816 params->beacon.mbssid_ies ? 6817 params->beacon.mbssid_ies->cnt : 6818 0); 6819 if (err) 6820 goto out; 6821 } 6822 6823 if (!params->mbssid_config.ema && params->beacon.rnr_ies) { 6824 err = -EINVAL; 6825 goto out; 6826 } 6827 6828 if (info->attrs[NL80211_ATTR_S1G_SHORT_BEACON]) { 6829 if (!info->attrs[NL80211_ATTR_S1G_LONG_BEACON_PERIOD]) { 6830 err = -EINVAL; 6831 goto out; 6832 } 6833 6834 params->s1g_long_beacon_period = nla_get_u8( 6835 info->attrs[NL80211_ATTR_S1G_LONG_BEACON_PERIOD]); 6836 6837 err = nl80211_parse_s1g_short_beacon( 6838 rdev, info->attrs[NL80211_ATTR_S1G_SHORT_BEACON], 6839 ¶ms->s1g_short_beacon); 6840 if (err) 6841 goto out; 6842 } 6843 6844 err = nl80211_calculate_ap_params(params); 6845 if (err) 6846 goto out; 6847 6848 err = nl80211_validate_ap_phy_operation(params); 6849 if (err) 6850 goto out; 6851 6852 if (info->attrs[NL80211_ATTR_AP_SETTINGS_FLAGS]) 6853 params->flags = nla_get_u32( 6854 info->attrs[NL80211_ATTR_AP_SETTINGS_FLAGS]); 6855 else if (info->attrs[NL80211_ATTR_EXTERNAL_AUTH_SUPPORT]) 6856 params->flags |= NL80211_AP_SETTINGS_EXTERNAL_AUTH_SUPPORT; 6857 6858 if (wdev->conn_owner_nlportid && 6859 info->attrs[NL80211_ATTR_SOCKET_OWNER] && 6860 wdev->conn_owner_nlportid != info->snd_portid) { 6861 err = -EINVAL; 6862 goto out; 6863 } 6864 6865 /* FIXME: validate MLO/link-id against driver capabilities */ 6866 6867 err = rdev_start_ap(rdev, dev, params); 6868 if (!err) { 6869 wdev->links[link_id].ap.beacon_interval = params->beacon_interval; 6870 wdev->links[link_id].ap.chandef = params->chandef; 6871 wdev->u.ap.ssid_len = params->ssid_len; 6872 memcpy(wdev->u.ap.ssid, params->ssid, 6873 params->ssid_len); 6874 6875 if (info->attrs[NL80211_ATTR_SOCKET_OWNER]) 6876 wdev->conn_owner_nlportid = info->snd_portid; 6877 6878 nl80211_send_ap_started(wdev, link_id); 6879 } 6880 out: 6881 kfree(params->acl); 6882 kfree(params->beacon.mbssid_ies); 6883 if (params->mbssid_config.tx_wdev && 6884 params->mbssid_config.tx_wdev->netdev && 6885 params->mbssid_config.tx_wdev->netdev != dev) 6886 dev_put(params->mbssid_config.tx_wdev->netdev); 6887 kfree(params->beacon.rnr_ies); 6888 kfree(params); 6889 6890 return err; 6891 } 6892 6893 static int nl80211_set_beacon(struct sk_buff *skb, struct genl_info *info) 6894 { 6895 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 6896 struct cfg80211_beaconing_check_config beacon_check = {}; 6897 unsigned int link_id = nl80211_link_id(info->attrs); 6898 struct net_device *dev = info->user_ptr[1]; 6899 struct wireless_dev *wdev = dev->ieee80211_ptr; 6900 struct cfg80211_ap_update *params; 6901 struct nlattr *attr; 6902 int err; 6903 6904 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP && 6905 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) 6906 return -EOPNOTSUPP; 6907 6908 if (!rdev->ops->change_beacon) 6909 return -EOPNOTSUPP; 6910 6911 if (!wdev->links[link_id].ap.beacon_interval) 6912 return -EINVAL; 6913 6914 params = kzalloc(sizeof(*params), GFP_KERNEL); 6915 if (!params) 6916 return -ENOMEM; 6917 6918 err = nl80211_parse_beacon(rdev, info->attrs, ¶ms->beacon, 6919 info->extack); 6920 if (err) 6921 goto out; 6922 6923 /* recheck beaconing is permitted with possibly changed power type */ 6924 beacon_check.iftype = wdev->iftype; 6925 beacon_check.relax = true; 6926 beacon_check.reg_power = 6927 cfg80211_get_6ghz_power_type(params->beacon.tail, 6928 params->beacon.tail_len); 6929 if (!cfg80211_reg_check_beaconing(&rdev->wiphy, 6930 &wdev->links[link_id].ap.chandef, 6931 &beacon_check)) { 6932 err = -EINVAL; 6933 goto out; 6934 } 6935 6936 attr = info->attrs[NL80211_ATTR_FILS_DISCOVERY]; 6937 if (attr) { 6938 err = nl80211_parse_fils_discovery(rdev, attr, 6939 ¶ms->fils_discovery); 6940 if (err) 6941 goto out; 6942 } 6943 6944 attr = info->attrs[NL80211_ATTR_UNSOL_BCAST_PROBE_RESP]; 6945 if (attr) { 6946 err = nl80211_parse_unsol_bcast_probe_resp(rdev, attr, 6947 ¶ms->unsol_bcast_probe_resp); 6948 if (err) 6949 goto out; 6950 } 6951 6952 attr = info->attrs[NL80211_ATTR_S1G_SHORT_BEACON]; 6953 if (attr) { 6954 err = nl80211_parse_s1g_short_beacon(rdev, attr, 6955 ¶ms->s1g_short_beacon); 6956 if (err) 6957 goto out; 6958 } 6959 6960 err = rdev_change_beacon(rdev, dev, params); 6961 6962 out: 6963 kfree(params->beacon.mbssid_ies); 6964 kfree(params->beacon.rnr_ies); 6965 kfree(params); 6966 return err; 6967 } 6968 6969 static int nl80211_stop_ap(struct sk_buff *skb, struct genl_info *info) 6970 { 6971 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 6972 unsigned int link_id = nl80211_link_id(info->attrs); 6973 struct net_device *dev = info->user_ptr[1]; 6974 6975 return cfg80211_stop_ap(rdev, dev, link_id, false); 6976 } 6977 6978 static const struct nla_policy sta_flags_policy[NL80211_STA_FLAG_MAX + 1] = { 6979 [NL80211_STA_FLAG_AUTHORIZED] = { .type = NLA_FLAG }, 6980 [NL80211_STA_FLAG_SHORT_PREAMBLE] = { .type = NLA_FLAG }, 6981 [NL80211_STA_FLAG_WME] = { .type = NLA_FLAG }, 6982 [NL80211_STA_FLAG_MFP] = { .type = NLA_FLAG }, 6983 [NL80211_STA_FLAG_AUTHENTICATED] = { .type = NLA_FLAG }, 6984 [NL80211_STA_FLAG_TDLS_PEER] = { .type = NLA_FLAG }, 6985 }; 6986 6987 static int parse_station_flags(struct genl_info *info, 6988 enum nl80211_iftype iftype, 6989 struct station_parameters *params) 6990 { 6991 struct nlattr *flags[NL80211_STA_FLAG_MAX + 1]; 6992 struct nlattr *nla; 6993 int flag; 6994 6995 /* 6996 * Try parsing the new attribute first so userspace 6997 * can specify both for older kernels. 6998 */ 6999 nla = info->attrs[NL80211_ATTR_STA_FLAGS2]; 7000 if (nla) { 7001 struct nl80211_sta_flag_update *sta_flags; 7002 7003 sta_flags = nla_data(nla); 7004 params->sta_flags_mask = sta_flags->mask; 7005 params->sta_flags_set = sta_flags->set; 7006 params->sta_flags_set &= params->sta_flags_mask; 7007 if ((params->sta_flags_mask | 7008 params->sta_flags_set) & BIT(__NL80211_STA_FLAG_INVALID)) 7009 return -EINVAL; 7010 return 0; 7011 } 7012 7013 /* if present, parse the old attribute */ 7014 7015 nla = info->attrs[NL80211_ATTR_STA_FLAGS]; 7016 if (!nla) 7017 return 0; 7018 7019 if (nla_parse_nested_deprecated(flags, NL80211_STA_FLAG_MAX, nla, sta_flags_policy, info->extack)) 7020 return -EINVAL; 7021 7022 /* 7023 * Only allow certain flags for interface types so that 7024 * other attributes are silently ignored. Remember that 7025 * this is backward compatibility code with old userspace 7026 * and shouldn't be hit in other cases anyway. 7027 */ 7028 switch (iftype) { 7029 case NL80211_IFTYPE_AP: 7030 case NL80211_IFTYPE_AP_VLAN: 7031 case NL80211_IFTYPE_P2P_GO: 7032 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) | 7033 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) | 7034 BIT(NL80211_STA_FLAG_WME) | 7035 BIT(NL80211_STA_FLAG_MFP); 7036 break; 7037 case NL80211_IFTYPE_P2P_CLIENT: 7038 case NL80211_IFTYPE_STATION: 7039 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) | 7040 BIT(NL80211_STA_FLAG_TDLS_PEER); 7041 break; 7042 case NL80211_IFTYPE_MESH_POINT: 7043 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHENTICATED) | 7044 BIT(NL80211_STA_FLAG_MFP) | 7045 BIT(NL80211_STA_FLAG_AUTHORIZED); 7046 break; 7047 default: 7048 return -EINVAL; 7049 } 7050 7051 for (flag = 1; flag <= NL80211_STA_FLAG_MAX; flag++) { 7052 if (flags[flag]) { 7053 params->sta_flags_set |= (1<<flag); 7054 7055 /* no longer support new API additions in old API */ 7056 if (flag > NL80211_STA_FLAG_MAX_OLD_API) 7057 return -EINVAL; 7058 } 7059 } 7060 7061 return 0; 7062 } 7063 7064 bool nl80211_put_sta_rate(struct sk_buff *msg, struct rate_info *info, int attr) 7065 { 7066 struct nlattr *rate; 7067 u32 bitrate; 7068 u16 bitrate_compat; 7069 enum nl80211_rate_info rate_flg; 7070 7071 rate = nla_nest_start_noflag(msg, attr); 7072 if (!rate) 7073 return false; 7074 7075 /* cfg80211_calculate_bitrate will return 0 for mcs >= 32 */ 7076 bitrate = cfg80211_calculate_bitrate(info); 7077 /* report 16-bit bitrate only if we can */ 7078 bitrate_compat = bitrate < (1UL << 16) ? bitrate : 0; 7079 if (bitrate > 0 && 7080 nla_put_u32(msg, NL80211_RATE_INFO_BITRATE32, bitrate)) 7081 return false; 7082 if (bitrate_compat > 0 && 7083 nla_put_u16(msg, NL80211_RATE_INFO_BITRATE, bitrate_compat)) 7084 return false; 7085 7086 switch (info->bw) { 7087 case RATE_INFO_BW_1: 7088 rate_flg = NL80211_RATE_INFO_1_MHZ_WIDTH; 7089 break; 7090 case RATE_INFO_BW_2: 7091 rate_flg = NL80211_RATE_INFO_2_MHZ_WIDTH; 7092 break; 7093 case RATE_INFO_BW_4: 7094 rate_flg = NL80211_RATE_INFO_4_MHZ_WIDTH; 7095 break; 7096 case RATE_INFO_BW_5: 7097 rate_flg = NL80211_RATE_INFO_5_MHZ_WIDTH; 7098 break; 7099 case RATE_INFO_BW_8: 7100 rate_flg = NL80211_RATE_INFO_8_MHZ_WIDTH; 7101 break; 7102 case RATE_INFO_BW_10: 7103 rate_flg = NL80211_RATE_INFO_10_MHZ_WIDTH; 7104 break; 7105 case RATE_INFO_BW_16: 7106 rate_flg = NL80211_RATE_INFO_16_MHZ_WIDTH; 7107 break; 7108 default: 7109 WARN_ON(1); 7110 fallthrough; 7111 case RATE_INFO_BW_20: 7112 rate_flg = 0; 7113 break; 7114 case RATE_INFO_BW_40: 7115 rate_flg = NL80211_RATE_INFO_40_MHZ_WIDTH; 7116 break; 7117 case RATE_INFO_BW_80: 7118 rate_flg = NL80211_RATE_INFO_80_MHZ_WIDTH; 7119 break; 7120 case RATE_INFO_BW_160: 7121 rate_flg = NL80211_RATE_INFO_160_MHZ_WIDTH; 7122 break; 7123 case RATE_INFO_BW_HE_RU: 7124 rate_flg = 0; 7125 WARN_ON(!(info->flags & RATE_INFO_FLAGS_HE_MCS)); 7126 break; 7127 case RATE_INFO_BW_320: 7128 rate_flg = NL80211_RATE_INFO_320_MHZ_WIDTH; 7129 break; 7130 case RATE_INFO_BW_EHT_RU: 7131 rate_flg = 0; 7132 WARN_ON(!(info->flags & RATE_INFO_FLAGS_EHT_MCS)); 7133 break; 7134 } 7135 7136 if (rate_flg && nla_put_flag(msg, rate_flg)) 7137 return false; 7138 7139 if (info->flags & RATE_INFO_FLAGS_MCS) { 7140 if (nla_put_u8(msg, NL80211_RATE_INFO_MCS, info->mcs)) 7141 return false; 7142 if (info->flags & RATE_INFO_FLAGS_SHORT_GI && 7143 nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI)) 7144 return false; 7145 } else if (info->flags & RATE_INFO_FLAGS_VHT_MCS) { 7146 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_MCS, info->mcs)) 7147 return false; 7148 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_NSS, info->nss)) 7149 return false; 7150 if (info->flags & RATE_INFO_FLAGS_SHORT_GI && 7151 nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI)) 7152 return false; 7153 } else if (info->flags & RATE_INFO_FLAGS_HE_MCS) { 7154 if (nla_put_u8(msg, NL80211_RATE_INFO_HE_MCS, info->mcs)) 7155 return false; 7156 if (nla_put_u8(msg, NL80211_RATE_INFO_HE_NSS, info->nss)) 7157 return false; 7158 if (nla_put_u8(msg, NL80211_RATE_INFO_HE_GI, info->he_gi)) 7159 return false; 7160 if (nla_put_u8(msg, NL80211_RATE_INFO_HE_DCM, info->he_dcm)) 7161 return false; 7162 if (info->bw == RATE_INFO_BW_HE_RU && 7163 nla_put_u8(msg, NL80211_RATE_INFO_HE_RU_ALLOC, 7164 info->he_ru_alloc)) 7165 return false; 7166 } else if (info->flags & RATE_INFO_FLAGS_S1G_MCS) { 7167 if (nla_put_u8(msg, NL80211_RATE_INFO_S1G_MCS, info->mcs)) 7168 return false; 7169 if (nla_put_u8(msg, NL80211_RATE_INFO_S1G_NSS, info->nss)) 7170 return false; 7171 if (info->flags & RATE_INFO_FLAGS_SHORT_GI && 7172 nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI)) 7173 return false; 7174 } else if (info->flags & RATE_INFO_FLAGS_EHT_MCS) { 7175 if (nla_put_u8(msg, NL80211_RATE_INFO_EHT_MCS, info->mcs)) 7176 return false; 7177 if (nla_put_u8(msg, NL80211_RATE_INFO_EHT_NSS, info->nss)) 7178 return false; 7179 if (nla_put_u8(msg, NL80211_RATE_INFO_EHT_GI, info->eht_gi)) 7180 return false; 7181 if (info->bw == RATE_INFO_BW_EHT_RU && 7182 nla_put_u8(msg, NL80211_RATE_INFO_EHT_RU_ALLOC, 7183 info->eht_ru_alloc)) 7184 return false; 7185 } 7186 7187 nla_nest_end(msg, rate); 7188 return true; 7189 } 7190 7191 static bool nl80211_put_signal(struct sk_buff *msg, u8 mask, s8 *signal, 7192 int id) 7193 { 7194 void *attr; 7195 int i = 0; 7196 7197 if (!mask) 7198 return true; 7199 7200 attr = nla_nest_start_noflag(msg, id); 7201 if (!attr) 7202 return false; 7203 7204 for (i = 0; i < IEEE80211_MAX_CHAINS; i++) { 7205 if (!(mask & BIT(i))) 7206 continue; 7207 7208 if (nla_put_u8(msg, i, signal[i])) 7209 return false; 7210 } 7211 7212 nla_nest_end(msg, attr); 7213 7214 return true; 7215 } 7216 7217 static int nl80211_fill_link_station(struct sk_buff *msg, 7218 struct cfg80211_registered_device *rdev, 7219 struct link_station_info *link_sinfo) 7220 { 7221 struct nlattr *bss_param, *link_sinfoattr; 7222 7223 #define PUT_LINK_SINFO(attr, memb, type) do { \ 7224 BUILD_BUG_ON(sizeof(type) == sizeof(u64)); \ 7225 if (link_sinfo->filled & BIT_ULL(NL80211_STA_INFO_ ## attr) && \ 7226 nla_put_ ## type(msg, NL80211_STA_INFO_ ## attr, \ 7227 link_sinfo->memb)) \ 7228 goto nla_put_failure; \ 7229 } while (0) 7230 #define PUT_LINK_SINFO_U64(attr, memb) do { \ 7231 if (link_sinfo->filled & BIT_ULL(NL80211_STA_INFO_ ## attr) && \ 7232 nla_put_u64_64bit(msg, NL80211_STA_INFO_ ## attr, \ 7233 link_sinfo->memb, NL80211_STA_INFO_PAD)) \ 7234 goto nla_put_failure; \ 7235 } while (0) 7236 7237 link_sinfoattr = nla_nest_start_noflag(msg, NL80211_ATTR_STA_INFO); 7238 if (!link_sinfoattr) 7239 goto nla_put_failure; 7240 7241 PUT_LINK_SINFO(INACTIVE_TIME, inactive_time, u32); 7242 7243 if (link_sinfo->filled & (BIT_ULL(NL80211_STA_INFO_RX_BYTES) | 7244 BIT_ULL(NL80211_STA_INFO_RX_BYTES64)) && 7245 nla_put_u32(msg, NL80211_STA_INFO_RX_BYTES, 7246 (u32)link_sinfo->rx_bytes)) 7247 goto nla_put_failure; 7248 7249 if (link_sinfo->filled & (BIT_ULL(NL80211_STA_INFO_TX_BYTES) | 7250 BIT_ULL(NL80211_STA_INFO_TX_BYTES64)) && 7251 nla_put_u32(msg, NL80211_STA_INFO_TX_BYTES, 7252 (u32)link_sinfo->tx_bytes)) 7253 goto nla_put_failure; 7254 7255 PUT_LINK_SINFO_U64(RX_BYTES64, rx_bytes); 7256 PUT_LINK_SINFO_U64(TX_BYTES64, tx_bytes); 7257 PUT_LINK_SINFO_U64(RX_DURATION, rx_duration); 7258 PUT_LINK_SINFO_U64(TX_DURATION, tx_duration); 7259 7260 if (wiphy_ext_feature_isset(&rdev->wiphy, 7261 NL80211_EXT_FEATURE_AIRTIME_FAIRNESS)) 7262 PUT_LINK_SINFO(AIRTIME_WEIGHT, airtime_weight, u16); 7263 7264 switch (rdev->wiphy.signal_type) { 7265 case CFG80211_SIGNAL_TYPE_MBM: 7266 PUT_LINK_SINFO(SIGNAL, signal, u8); 7267 PUT_LINK_SINFO(SIGNAL_AVG, signal_avg, u8); 7268 break; 7269 default: 7270 break; 7271 } 7272 if (link_sinfo->filled & BIT_ULL(NL80211_STA_INFO_CHAIN_SIGNAL)) { 7273 if (!nl80211_put_signal(msg, link_sinfo->chains, 7274 link_sinfo->chain_signal, 7275 NL80211_STA_INFO_CHAIN_SIGNAL)) 7276 goto nla_put_failure; 7277 } 7278 if (link_sinfo->filled & BIT_ULL(NL80211_STA_INFO_CHAIN_SIGNAL_AVG)) { 7279 if (!nl80211_put_signal(msg, link_sinfo->chains, 7280 link_sinfo->chain_signal_avg, 7281 NL80211_STA_INFO_CHAIN_SIGNAL_AVG)) 7282 goto nla_put_failure; 7283 } 7284 if (link_sinfo->filled & BIT_ULL(NL80211_STA_INFO_TX_BITRATE)) { 7285 if (!nl80211_put_sta_rate(msg, &link_sinfo->txrate, 7286 NL80211_STA_INFO_TX_BITRATE)) 7287 goto nla_put_failure; 7288 } 7289 if (link_sinfo->filled & BIT_ULL(NL80211_STA_INFO_RX_BITRATE)) { 7290 if (!nl80211_put_sta_rate(msg, &link_sinfo->rxrate, 7291 NL80211_STA_INFO_RX_BITRATE)) 7292 goto nla_put_failure; 7293 } 7294 7295 PUT_LINK_SINFO(RX_PACKETS, rx_packets, u32); 7296 PUT_LINK_SINFO(TX_PACKETS, tx_packets, u32); 7297 PUT_LINK_SINFO(TX_RETRIES, tx_retries, u32); 7298 PUT_LINK_SINFO(TX_FAILED, tx_failed, u32); 7299 PUT_LINK_SINFO(EXPECTED_THROUGHPUT, expected_throughput, u32); 7300 PUT_LINK_SINFO(BEACON_LOSS, beacon_loss_count, u32); 7301 7302 if (link_sinfo->filled & BIT_ULL(NL80211_STA_INFO_BSS_PARAM)) { 7303 bss_param = nla_nest_start_noflag(msg, 7304 NL80211_STA_INFO_BSS_PARAM); 7305 if (!bss_param) 7306 goto nla_put_failure; 7307 7308 if (((link_sinfo->bss_param.flags & 7309 BSS_PARAM_FLAGS_CTS_PROT) && 7310 nla_put_flag(msg, NL80211_STA_BSS_PARAM_CTS_PROT)) || 7311 ((link_sinfo->bss_param.flags & 7312 BSS_PARAM_FLAGS_SHORT_PREAMBLE) && 7313 nla_put_flag(msg, 7314 NL80211_STA_BSS_PARAM_SHORT_PREAMBLE)) || 7315 ((link_sinfo->bss_param.flags & 7316 BSS_PARAM_FLAGS_SHORT_SLOT_TIME) && 7317 nla_put_flag(msg, 7318 NL80211_STA_BSS_PARAM_SHORT_SLOT_TIME)) || 7319 nla_put_u8(msg, NL80211_STA_BSS_PARAM_DTIM_PERIOD, 7320 link_sinfo->bss_param.dtim_period) || 7321 nla_put_u16(msg, NL80211_STA_BSS_PARAM_BEACON_INTERVAL, 7322 link_sinfo->bss_param.beacon_interval)) 7323 goto nla_put_failure; 7324 7325 nla_nest_end(msg, bss_param); 7326 } 7327 7328 PUT_LINK_SINFO_U64(RX_DROP_MISC, rx_dropped_misc); 7329 PUT_LINK_SINFO_U64(BEACON_RX, rx_beacon); 7330 PUT_LINK_SINFO(BEACON_SIGNAL_AVG, rx_beacon_signal_avg, u8); 7331 PUT_LINK_SINFO(RX_MPDUS, rx_mpdu_count, u32); 7332 PUT_LINK_SINFO(FCS_ERROR_COUNT, fcs_err_count, u32); 7333 if (wiphy_ext_feature_isset(&rdev->wiphy, 7334 NL80211_EXT_FEATURE_ACK_SIGNAL_SUPPORT)) { 7335 PUT_LINK_SINFO(ACK_SIGNAL, ack_signal, u8); 7336 PUT_LINK_SINFO(ACK_SIGNAL_AVG, avg_ack_signal, s8); 7337 } 7338 7339 #undef PUT_LINK_SINFO 7340 #undef PUT_LINK_SINFO_U64 7341 7342 if (link_sinfo->pertid) { 7343 struct nlattr *tidsattr; 7344 int tid; 7345 7346 tidsattr = nla_nest_start_noflag(msg, 7347 NL80211_STA_INFO_TID_STATS); 7348 if (!tidsattr) 7349 goto nla_put_failure; 7350 7351 for (tid = 0; tid < IEEE80211_NUM_TIDS + 1; tid++) { 7352 struct cfg80211_tid_stats *tidstats; 7353 struct nlattr *tidattr; 7354 7355 tidstats = &link_sinfo->pertid[tid]; 7356 7357 if (!tidstats->filled) 7358 continue; 7359 7360 tidattr = nla_nest_start_noflag(msg, tid + 1); 7361 if (!tidattr) 7362 goto nla_put_failure; 7363 7364 #define PUT_TIDVAL_U64(attr, memb) do { \ 7365 if (tidstats->filled & BIT(NL80211_TID_STATS_ ## attr) && \ 7366 nla_put_u64_64bit(msg, NL80211_TID_STATS_ ## attr, \ 7367 tidstats->memb, NL80211_TID_STATS_PAD)) \ 7368 goto nla_put_failure; \ 7369 } while (0) 7370 7371 PUT_TIDVAL_U64(RX_MSDU, rx_msdu); 7372 PUT_TIDVAL_U64(TX_MSDU, tx_msdu); 7373 PUT_TIDVAL_U64(TX_MSDU_RETRIES, tx_msdu_retries); 7374 PUT_TIDVAL_U64(TX_MSDU_FAILED, tx_msdu_failed); 7375 7376 #undef PUT_TIDVAL_U64 7377 if ((tidstats->filled & 7378 BIT(NL80211_TID_STATS_TXQ_STATS)) && 7379 !nl80211_put_txq_stats(msg, &tidstats->txq_stats, 7380 NL80211_TID_STATS_TXQ_STATS)) 7381 goto nla_put_failure; 7382 7383 nla_nest_end(msg, tidattr); 7384 } 7385 7386 nla_nest_end(msg, tidsattr); 7387 } 7388 7389 nla_nest_end(msg, link_sinfoattr); 7390 return 0; 7391 7392 nla_put_failure: 7393 return -EMSGSIZE; 7394 } 7395 7396 static int nl80211_send_station(struct sk_buff *msg, u32 cmd, u32 portid, 7397 u32 seq, int flags, 7398 struct cfg80211_registered_device *rdev, 7399 struct net_device *dev, 7400 const u8 *mac_addr, struct station_info *sinfo, 7401 bool link_stats) 7402 { 7403 void *hdr; 7404 struct nlattr *sinfoattr, *bss_param; 7405 struct link_station_info *link_sinfo; 7406 struct nlattr *links, *link; 7407 int link_id; 7408 7409 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd); 7410 if (!hdr) { 7411 cfg80211_sinfo_release_content(sinfo); 7412 return -1; 7413 } 7414 7415 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) || 7416 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) || 7417 nla_put_u32(msg, NL80211_ATTR_GENERATION, sinfo->generation)) 7418 goto nla_put_failure; 7419 7420 sinfoattr = nla_nest_start_noflag(msg, NL80211_ATTR_STA_INFO); 7421 if (!sinfoattr) 7422 goto nla_put_failure; 7423 7424 #define PUT_SINFO(attr, memb, type) do { \ 7425 BUILD_BUG_ON(sizeof(type) == sizeof(u64)); \ 7426 if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_ ## attr) && \ 7427 nla_put_ ## type(msg, NL80211_STA_INFO_ ## attr, \ 7428 sinfo->memb)) \ 7429 goto nla_put_failure; \ 7430 } while (0) 7431 #define PUT_SINFO_U64(attr, memb) do { \ 7432 if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_ ## attr) && \ 7433 nla_put_u64_64bit(msg, NL80211_STA_INFO_ ## attr, \ 7434 sinfo->memb, NL80211_STA_INFO_PAD)) \ 7435 goto nla_put_failure; \ 7436 } while (0) 7437 7438 PUT_SINFO(CONNECTED_TIME, connected_time, u32); 7439 PUT_SINFO(INACTIVE_TIME, inactive_time, u32); 7440 PUT_SINFO_U64(ASSOC_AT_BOOTTIME, assoc_at); 7441 7442 if (sinfo->filled & (BIT_ULL(NL80211_STA_INFO_RX_BYTES) | 7443 BIT_ULL(NL80211_STA_INFO_RX_BYTES64)) && 7444 nla_put_u32(msg, NL80211_STA_INFO_RX_BYTES, 7445 (u32)sinfo->rx_bytes)) 7446 goto nla_put_failure; 7447 7448 if (sinfo->filled & (BIT_ULL(NL80211_STA_INFO_TX_BYTES) | 7449 BIT_ULL(NL80211_STA_INFO_TX_BYTES64)) && 7450 nla_put_u32(msg, NL80211_STA_INFO_TX_BYTES, 7451 (u32)sinfo->tx_bytes)) 7452 goto nla_put_failure; 7453 7454 PUT_SINFO_U64(RX_BYTES64, rx_bytes); 7455 PUT_SINFO_U64(TX_BYTES64, tx_bytes); 7456 PUT_SINFO_U64(RX_DURATION, rx_duration); 7457 PUT_SINFO_U64(TX_DURATION, tx_duration); 7458 7459 if (wiphy_ext_feature_isset(&rdev->wiphy, 7460 NL80211_EXT_FEATURE_AIRTIME_FAIRNESS)) 7461 PUT_SINFO(AIRTIME_WEIGHT, airtime_weight, u16); 7462 7463 switch (rdev->wiphy.signal_type) { 7464 case CFG80211_SIGNAL_TYPE_MBM: 7465 PUT_SINFO(SIGNAL, signal, u8); 7466 PUT_SINFO(SIGNAL_AVG, signal_avg, u8); 7467 break; 7468 default: 7469 break; 7470 } 7471 if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_CHAIN_SIGNAL)) { 7472 if (!nl80211_put_signal(msg, sinfo->chains, 7473 sinfo->chain_signal, 7474 NL80211_STA_INFO_CHAIN_SIGNAL)) 7475 goto nla_put_failure; 7476 } 7477 if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_CHAIN_SIGNAL_AVG)) { 7478 if (!nl80211_put_signal(msg, sinfo->chains, 7479 sinfo->chain_signal_avg, 7480 NL80211_STA_INFO_CHAIN_SIGNAL_AVG)) 7481 goto nla_put_failure; 7482 } 7483 if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_TX_BITRATE)) { 7484 if (!nl80211_put_sta_rate(msg, &sinfo->txrate, 7485 NL80211_STA_INFO_TX_BITRATE)) 7486 goto nla_put_failure; 7487 } 7488 if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_RX_BITRATE)) { 7489 if (!nl80211_put_sta_rate(msg, &sinfo->rxrate, 7490 NL80211_STA_INFO_RX_BITRATE)) 7491 goto nla_put_failure; 7492 } 7493 7494 PUT_SINFO(RX_PACKETS, rx_packets, u32); 7495 PUT_SINFO(TX_PACKETS, tx_packets, u32); 7496 PUT_SINFO(TX_RETRIES, tx_retries, u32); 7497 PUT_SINFO(TX_FAILED, tx_failed, u32); 7498 PUT_SINFO(EXPECTED_THROUGHPUT, expected_throughput, u32); 7499 PUT_SINFO(BEACON_LOSS, beacon_loss_count, u32); 7500 7501 PUT_SINFO(LLID, llid, u16); 7502 PUT_SINFO(PLID, plid, u16); 7503 PUT_SINFO(PLINK_STATE, plink_state, u8); 7504 PUT_SINFO(AIRTIME_LINK_METRIC, airtime_link_metric, u32); 7505 PUT_SINFO(LOCAL_PM, local_pm, u32); 7506 PUT_SINFO(PEER_PM, peer_pm, u32); 7507 PUT_SINFO(NONPEER_PM, nonpeer_pm, u32); 7508 PUT_SINFO(CONNECTED_TO_GATE, connected_to_gate, u8); 7509 PUT_SINFO(CONNECTED_TO_AS, connected_to_as, u8); 7510 PUT_SINFO_U64(T_OFFSET, t_offset); 7511 7512 if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_BSS_PARAM)) { 7513 bss_param = nla_nest_start_noflag(msg, 7514 NL80211_STA_INFO_BSS_PARAM); 7515 if (!bss_param) 7516 goto nla_put_failure; 7517 7518 if (((sinfo->bss_param.flags & BSS_PARAM_FLAGS_CTS_PROT) && 7519 nla_put_flag(msg, NL80211_STA_BSS_PARAM_CTS_PROT)) || 7520 ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_PREAMBLE) && 7521 nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_PREAMBLE)) || 7522 ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_SLOT_TIME) && 7523 nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_SLOT_TIME)) || 7524 nla_put_u8(msg, NL80211_STA_BSS_PARAM_DTIM_PERIOD, 7525 sinfo->bss_param.dtim_period) || 7526 nla_put_u16(msg, NL80211_STA_BSS_PARAM_BEACON_INTERVAL, 7527 sinfo->bss_param.beacon_interval)) 7528 goto nla_put_failure; 7529 7530 nla_nest_end(msg, bss_param); 7531 } 7532 if ((sinfo->filled & BIT_ULL(NL80211_STA_INFO_STA_FLAGS)) && 7533 nla_put(msg, NL80211_STA_INFO_STA_FLAGS, 7534 sizeof(struct nl80211_sta_flag_update), 7535 &sinfo->sta_flags)) 7536 goto nla_put_failure; 7537 7538 PUT_SINFO_U64(RX_DROP_MISC, rx_dropped_misc); 7539 PUT_SINFO_U64(BEACON_RX, rx_beacon); 7540 PUT_SINFO(BEACON_SIGNAL_AVG, rx_beacon_signal_avg, u8); 7541 PUT_SINFO(RX_MPDUS, rx_mpdu_count, u32); 7542 PUT_SINFO(FCS_ERROR_COUNT, fcs_err_count, u32); 7543 if (wiphy_ext_feature_isset(&rdev->wiphy, 7544 NL80211_EXT_FEATURE_ACK_SIGNAL_SUPPORT)) { 7545 PUT_SINFO(ACK_SIGNAL, ack_signal, u8); 7546 PUT_SINFO(ACK_SIGNAL_AVG, avg_ack_signal, s8); 7547 } 7548 7549 #undef PUT_SINFO 7550 #undef PUT_SINFO_U64 7551 7552 if (sinfo->pertid) { 7553 struct nlattr *tidsattr; 7554 int tid; 7555 7556 tidsattr = nla_nest_start_noflag(msg, 7557 NL80211_STA_INFO_TID_STATS); 7558 if (!tidsattr) 7559 goto nla_put_failure; 7560 7561 for (tid = 0; tid < IEEE80211_NUM_TIDS + 1; tid++) { 7562 struct cfg80211_tid_stats *tidstats; 7563 struct nlattr *tidattr; 7564 7565 tidstats = &sinfo->pertid[tid]; 7566 7567 if (!tidstats->filled) 7568 continue; 7569 7570 tidattr = nla_nest_start_noflag(msg, tid + 1); 7571 if (!tidattr) 7572 goto nla_put_failure; 7573 7574 #define PUT_TIDVAL_U64(attr, memb) do { \ 7575 if (tidstats->filled & BIT(NL80211_TID_STATS_ ## attr) && \ 7576 nla_put_u64_64bit(msg, NL80211_TID_STATS_ ## attr, \ 7577 tidstats->memb, NL80211_TID_STATS_PAD)) \ 7578 goto nla_put_failure; \ 7579 } while (0) 7580 7581 PUT_TIDVAL_U64(RX_MSDU, rx_msdu); 7582 PUT_TIDVAL_U64(TX_MSDU, tx_msdu); 7583 PUT_TIDVAL_U64(TX_MSDU_RETRIES, tx_msdu_retries); 7584 PUT_TIDVAL_U64(TX_MSDU_FAILED, tx_msdu_failed); 7585 7586 #undef PUT_TIDVAL_U64 7587 if ((tidstats->filled & 7588 BIT(NL80211_TID_STATS_TXQ_STATS)) && 7589 !nl80211_put_txq_stats(msg, &tidstats->txq_stats, 7590 NL80211_TID_STATS_TXQ_STATS)) 7591 goto nla_put_failure; 7592 7593 nla_nest_end(msg, tidattr); 7594 } 7595 7596 nla_nest_end(msg, tidsattr); 7597 } 7598 7599 nla_nest_end(msg, sinfoattr); 7600 7601 if (sinfo->assoc_req_ies_len && 7602 nla_put(msg, NL80211_ATTR_IE, sinfo->assoc_req_ies_len, 7603 sinfo->assoc_req_ies)) 7604 goto nla_put_failure; 7605 7606 if (sinfo->assoc_resp_ies_len && 7607 nla_put(msg, NL80211_ATTR_RESP_IE, sinfo->assoc_resp_ies_len, 7608 sinfo->assoc_resp_ies)) 7609 goto nla_put_failure; 7610 7611 if (sinfo->mlo_params_valid) { 7612 if (nla_put_u8(msg, NL80211_ATTR_MLO_LINK_ID, 7613 sinfo->assoc_link_id)) 7614 goto nla_put_failure; 7615 7616 if (!is_zero_ether_addr(sinfo->mld_addr) && 7617 nla_put(msg, NL80211_ATTR_MLD_ADDR, ETH_ALEN, 7618 sinfo->mld_addr)) 7619 goto nla_put_failure; 7620 } 7621 7622 if (link_stats && sinfo->valid_links) { 7623 links = nla_nest_start(msg, NL80211_ATTR_MLO_LINKS); 7624 if (!links) 7625 goto nla_put_failure; 7626 7627 for_each_valid_link(sinfo, link_id) { 7628 link_sinfo = sinfo->links[link_id]; 7629 7630 if (WARN_ON_ONCE(!link_sinfo)) 7631 continue; 7632 7633 if (!is_valid_ether_addr(link_sinfo->addr)) 7634 continue; 7635 7636 link = nla_nest_start(msg, link_id + 1); 7637 if (!link) 7638 goto nla_put_failure; 7639 7640 if (nla_put_u8(msg, NL80211_ATTR_MLO_LINK_ID, 7641 link_id)) 7642 goto nla_put_failure; 7643 7644 if (nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, 7645 link_sinfo->addr)) 7646 goto nla_put_failure; 7647 7648 if (nl80211_fill_link_station(msg, rdev, link_sinfo)) 7649 goto nla_put_failure; 7650 7651 nla_nest_end(msg, link); 7652 } 7653 nla_nest_end(msg, links); 7654 } 7655 7656 cfg80211_sinfo_release_content(sinfo); 7657 genlmsg_end(msg, hdr); 7658 return 0; 7659 7660 nla_put_failure: 7661 cfg80211_sinfo_release_content(sinfo); 7662 genlmsg_cancel(msg, hdr); 7663 return -EMSGSIZE; 7664 } 7665 7666 static void cfg80211_sta_set_mld_sinfo(struct station_info *sinfo) 7667 { 7668 struct link_station_info *link_sinfo; 7669 int link_id, init = 0; 7670 u32 link_inactive_time; 7671 7672 sinfo->signal = -99; 7673 7674 for_each_valid_link(sinfo, link_id) { 7675 link_sinfo = sinfo->links[link_id]; 7676 if (!link_sinfo) 7677 continue; 7678 7679 if ((link_sinfo->filled & 7680 BIT_ULL(NL80211_STA_INFO_TX_PACKETS))) { 7681 sinfo->tx_packets += link_sinfo->tx_packets; 7682 sinfo->filled |= BIT_ULL(NL80211_STA_INFO_TX_PACKETS); 7683 } 7684 7685 if ((link_sinfo->filled & 7686 BIT_ULL(NL80211_STA_INFO_RX_PACKETS))) { 7687 sinfo->rx_packets += link_sinfo->rx_packets; 7688 sinfo->filled |= BIT_ULL(NL80211_STA_INFO_RX_PACKETS); 7689 } 7690 7691 if (link_sinfo->filled & 7692 (BIT_ULL(NL80211_STA_INFO_TX_BYTES) | 7693 BIT_ULL(NL80211_STA_INFO_TX_BYTES64))) { 7694 sinfo->tx_bytes += link_sinfo->tx_bytes; 7695 sinfo->filled |= BIT_ULL(NL80211_STA_INFO_TX_BYTES); 7696 } 7697 7698 if (link_sinfo->filled & 7699 (BIT_ULL(NL80211_STA_INFO_RX_BYTES) | 7700 BIT_ULL(NL80211_STA_INFO_TX_BYTES64))) { 7701 sinfo->rx_bytes += link_sinfo->rx_bytes; 7702 sinfo->filled |= BIT_ULL(NL80211_STA_INFO_RX_BYTES); 7703 } 7704 7705 if (link_sinfo->filled & 7706 BIT_ULL(NL80211_STA_INFO_TX_RETRIES)) { 7707 sinfo->tx_retries += link_sinfo->tx_retries; 7708 sinfo->filled |= BIT_ULL(NL80211_STA_INFO_TX_RETRIES); 7709 } 7710 7711 if (link_sinfo->filled & BIT_ULL(NL80211_STA_INFO_TX_FAILED)) { 7712 sinfo->tx_failed += link_sinfo->tx_failed; 7713 sinfo->filled |= BIT_ULL(NL80211_STA_INFO_TX_FAILED); 7714 } 7715 7716 if (link_sinfo->filled & 7717 BIT_ULL(NL80211_STA_INFO_RX_DROP_MISC)) { 7718 sinfo->rx_dropped_misc += link_sinfo->rx_dropped_misc; 7719 sinfo->filled |= 7720 BIT_ULL(NL80211_STA_INFO_RX_DROP_MISC); 7721 } 7722 7723 if (link_sinfo->filled & 7724 BIT_ULL(NL80211_STA_INFO_BEACON_LOSS)) { 7725 sinfo->beacon_loss_count += 7726 link_sinfo->beacon_loss_count; 7727 sinfo->filled |= BIT_ULL(NL80211_STA_INFO_BEACON_LOSS); 7728 } 7729 7730 if (link_sinfo->filled & 7731 BIT_ULL(NL80211_STA_INFO_EXPECTED_THROUGHPUT)) { 7732 sinfo->expected_throughput += 7733 link_sinfo->expected_throughput; 7734 sinfo->filled |= 7735 BIT_ULL(NL80211_STA_INFO_EXPECTED_THROUGHPUT); 7736 } 7737 7738 if (link_sinfo->filled & BIT_ULL(NL80211_STA_INFO_RX_MPDUS)) { 7739 sinfo->rx_mpdu_count += link_sinfo->rx_mpdu_count; 7740 sinfo->filled |= BIT_ULL(NL80211_STA_INFO_RX_MPDUS); 7741 } 7742 7743 if (link_sinfo->filled & 7744 BIT_ULL(NL80211_STA_INFO_FCS_ERROR_COUNT)) { 7745 sinfo->fcs_err_count += link_sinfo->fcs_err_count; 7746 sinfo->filled |= 7747 BIT_ULL(NL80211_STA_INFO_FCS_ERROR_COUNT); 7748 } 7749 7750 if (link_sinfo->filled & 7751 BIT_ULL(NL80211_STA_INFO_BEACON_RX)) { 7752 sinfo->rx_beacon += link_sinfo->rx_beacon; 7753 sinfo->filled |= BIT_ULL(NL80211_STA_INFO_BEACON_RX); 7754 } 7755 7756 /* Update MLO signal, signal_avg as best among links */ 7757 if ((link_sinfo->filled & BIT_ULL(NL80211_STA_INFO_SIGNAL)) && 7758 link_sinfo->signal > sinfo->signal) { 7759 sinfo->signal = link_sinfo->signal; 7760 sinfo->filled |= BIT_ULL(NL80211_STA_INFO_SIGNAL); 7761 } 7762 7763 if ((link_sinfo->filled & 7764 BIT_ULL(NL80211_STA_INFO_SIGNAL_AVG)) && 7765 link_sinfo->signal_avg > sinfo->signal_avg) { 7766 sinfo->signal_avg = link_sinfo->signal_avg; 7767 sinfo->filled |= BIT_ULL(NL80211_STA_INFO_SIGNAL_AVG); 7768 } 7769 7770 /* Update MLO inactive_time, bss_param based on least 7771 * value for corresponding field of link. 7772 */ 7773 if ((link_sinfo->filled & 7774 BIT_ULL(NL80211_STA_INFO_INACTIVE_TIME)) && 7775 (!init || 7776 link_inactive_time > link_sinfo->inactive_time)) { 7777 link_inactive_time = link_sinfo->inactive_time; 7778 sinfo->inactive_time = link_sinfo->inactive_time; 7779 sinfo->filled |= NL80211_STA_INFO_INACTIVE_TIME; 7780 } 7781 7782 if (link_sinfo->filled & BIT_ULL(NL80211_STA_INFO_BSS_PARAM) && 7783 (!init || 7784 sinfo->bss_param.dtim_period > 7785 link_sinfo->bss_param.dtim_period)) { 7786 sinfo->bss_param.dtim_period = 7787 link_sinfo->bss_param.dtim_period; 7788 sinfo->filled |= NL80211_STA_BSS_PARAM_DTIM_PERIOD; 7789 sinfo->bss_param.beacon_interval = 7790 link_sinfo->bss_param.beacon_interval; 7791 sinfo->filled |= NL80211_STA_BSS_PARAM_BEACON_INTERVAL; 7792 } 7793 7794 /* Update MLO rates as per last updated link rate */ 7795 if ((link_sinfo->filled & 7796 BIT_ULL(NL80211_STA_INFO_TX_BITRATE)) && 7797 (!init || 7798 link_inactive_time > link_sinfo->inactive_time)) { 7799 sinfo->txrate = link_sinfo->txrate; 7800 sinfo->filled |= BIT_ULL(NL80211_STA_INFO_TX_BITRATE); 7801 } 7802 if ((link_sinfo->filled & 7803 BIT_ULL(NL80211_STA_INFO_RX_BITRATE)) && 7804 (!init || 7805 link_inactive_time > link_sinfo->inactive_time)) { 7806 sinfo->rxrate = link_sinfo->rxrate; 7807 sinfo->filled |= BIT_ULL(NL80211_STA_INFO_RX_BITRATE); 7808 } 7809 7810 if (link_sinfo->filled & 7811 BIT_ULL(NL80211_STA_INFO_TX_DURATION) && 7812 (!init || 7813 link_inactive_time > link_sinfo->inactive_time)) { 7814 sinfo->tx_duration += link_sinfo->tx_duration; 7815 sinfo->filled |= 7816 BIT_ULL(NL80211_STA_INFO_TX_DURATION); 7817 } 7818 if (link_sinfo->filled & 7819 BIT_ULL(NL80211_STA_INFO_RX_DURATION) && 7820 (!init || 7821 link_inactive_time > link_sinfo->inactive_time)) { 7822 sinfo->rx_duration += link_sinfo->rx_duration; 7823 sinfo->filled |= 7824 BIT_ULL(NL80211_STA_INFO_RX_DURATION); 7825 } 7826 init++; 7827 7828 /* pertid stats accumulate for rx/tx fields */ 7829 if (sinfo->pertid) { 7830 sinfo->pertid->rx_msdu += 7831 link_sinfo->pertid->rx_msdu; 7832 sinfo->pertid->tx_msdu += 7833 link_sinfo->pertid->tx_msdu; 7834 sinfo->pertid->tx_msdu_retries += 7835 link_sinfo->pertid->tx_msdu_retries; 7836 sinfo->pertid->tx_msdu_failed += 7837 link_sinfo->pertid->tx_msdu_failed; 7838 7839 sinfo->pertid->filled |= 7840 BIT(NL80211_TID_STATS_RX_MSDU) | 7841 BIT(NL80211_TID_STATS_TX_MSDU) | 7842 BIT(NL80211_TID_STATS_TX_MSDU_RETRIES) | 7843 BIT(NL80211_TID_STATS_TX_MSDU_FAILED); 7844 } 7845 } 7846 7847 /* Reset sinfo->filled bits to exclude fields which don't make 7848 * much sense at the MLO level. 7849 */ 7850 sinfo->filled &= ~BIT_ULL(NL80211_STA_INFO_CHAIN_SIGNAL); 7851 sinfo->filled &= ~BIT_ULL(NL80211_STA_INFO_CHAIN_SIGNAL_AVG); 7852 } 7853 7854 static int nl80211_dump_station(struct sk_buff *skb, 7855 struct netlink_callback *cb) 7856 { 7857 struct station_info sinfo; 7858 struct cfg80211_registered_device *rdev; 7859 struct wireless_dev *wdev; 7860 u8 mac_addr[ETH_ALEN]; 7861 int sta_idx = cb->args[2]; 7862 bool sinfo_alloc = false; 7863 int err, i; 7864 7865 err = nl80211_prepare_wdev_dump(cb, &rdev, &wdev, NULL); 7866 if (err) 7867 return err; 7868 /* nl80211_prepare_wdev_dump acquired it in the successful case */ 7869 __acquire(&rdev->wiphy.mtx); 7870 7871 if (!wdev->netdev) { 7872 err = -EINVAL; 7873 goto out_err; 7874 } 7875 7876 if (!rdev->ops->dump_station) { 7877 err = -EOPNOTSUPP; 7878 goto out_err; 7879 } 7880 7881 while (1) { 7882 memset(&sinfo, 0, sizeof(sinfo)); 7883 7884 for (i = 0; i < IEEE80211_MLD_MAX_NUM_LINKS; i++) { 7885 sinfo.links[i] = 7886 kzalloc(sizeof(*sinfo.links[0]), GFP_KERNEL); 7887 if (!sinfo.links[i]) { 7888 err = -ENOMEM; 7889 goto out_err; 7890 } 7891 sinfo_alloc = true; 7892 } 7893 7894 err = rdev_dump_station(rdev, wdev->netdev, sta_idx, 7895 mac_addr, &sinfo); 7896 if (err == -ENOENT) 7897 break; 7898 if (err) 7899 goto out_err; 7900 7901 if (sinfo.valid_links) 7902 cfg80211_sta_set_mld_sinfo(&sinfo); 7903 7904 /* reset the sinfo_alloc flag as nl80211_send_station() 7905 * always releases sinfo 7906 */ 7907 sinfo_alloc = false; 7908 7909 if (nl80211_send_station(skb, NL80211_CMD_NEW_STATION, 7910 NETLINK_CB(cb->skb).portid, 7911 cb->nlh->nlmsg_seq, NLM_F_MULTI, 7912 rdev, wdev->netdev, mac_addr, 7913 &sinfo, false) < 0) 7914 goto out; 7915 7916 sta_idx++; 7917 } 7918 7919 out: 7920 cb->args[2] = sta_idx; 7921 err = skb->len; 7922 out_err: 7923 if (sinfo_alloc) 7924 cfg80211_sinfo_release_content(&sinfo); 7925 wiphy_unlock(&rdev->wiphy); 7926 7927 return err; 7928 } 7929 7930 static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info) 7931 { 7932 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 7933 struct net_device *dev = info->user_ptr[1]; 7934 struct station_info sinfo; 7935 struct sk_buff *msg; 7936 u8 *mac_addr = NULL; 7937 int err, i; 7938 7939 memset(&sinfo, 0, sizeof(sinfo)); 7940 7941 if (!info->attrs[NL80211_ATTR_MAC]) 7942 return -EINVAL; 7943 7944 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]); 7945 7946 if (!rdev->ops->get_station) 7947 return -EOPNOTSUPP; 7948 7949 for (i = 0; i < IEEE80211_MLD_MAX_NUM_LINKS; i++) { 7950 sinfo.links[i] = kzalloc(sizeof(*sinfo.links[0]), GFP_KERNEL); 7951 if (!sinfo.links[i]) { 7952 cfg80211_sinfo_release_content(&sinfo); 7953 return -ENOMEM; 7954 } 7955 } 7956 7957 err = rdev_get_station(rdev, dev, mac_addr, &sinfo); 7958 if (err) { 7959 cfg80211_sinfo_release_content(&sinfo); 7960 return err; 7961 } 7962 7963 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 7964 if (!msg) { 7965 cfg80211_sinfo_release_content(&sinfo); 7966 return -ENOMEM; 7967 } 7968 7969 if (sinfo.valid_links) 7970 cfg80211_sta_set_mld_sinfo(&sinfo); 7971 7972 if (nl80211_send_station(msg, NL80211_CMD_NEW_STATION, 7973 info->snd_portid, info->snd_seq, 0, 7974 rdev, dev, mac_addr, &sinfo, false) < 0) { 7975 nlmsg_free(msg); 7976 return -ENOBUFS; 7977 } 7978 7979 return genlmsg_reply(msg, info); 7980 } 7981 7982 int cfg80211_check_station_change(struct wiphy *wiphy, 7983 struct station_parameters *params, 7984 enum cfg80211_station_type statype) 7985 { 7986 if (params->listen_interval != -1 && 7987 statype != CFG80211_STA_AP_CLIENT_UNASSOC) 7988 return -EINVAL; 7989 7990 if (params->support_p2p_ps != -1 && 7991 statype != CFG80211_STA_AP_CLIENT_UNASSOC) 7992 return -EINVAL; 7993 7994 if (params->aid && 7995 !(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) && 7996 statype != CFG80211_STA_AP_CLIENT_UNASSOC) 7997 return -EINVAL; 7998 7999 /* When you run into this, adjust the code below for the new flag */ 8000 BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 8); 8001 8002 switch (statype) { 8003 case CFG80211_STA_MESH_PEER_KERNEL: 8004 case CFG80211_STA_MESH_PEER_USER: 8005 /* 8006 * No ignoring the TDLS flag here -- the userspace mesh 8007 * code doesn't have the bug of including TDLS in the 8008 * mask everywhere. 8009 */ 8010 if (params->sta_flags_mask & 8011 ~(BIT(NL80211_STA_FLAG_AUTHENTICATED) | 8012 BIT(NL80211_STA_FLAG_MFP) | 8013 BIT(NL80211_STA_FLAG_AUTHORIZED))) 8014 return -EINVAL; 8015 break; 8016 case CFG80211_STA_TDLS_PEER_SETUP: 8017 case CFG80211_STA_TDLS_PEER_ACTIVE: 8018 if (!(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))) 8019 return -EINVAL; 8020 /* ignore since it can't change */ 8021 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER); 8022 break; 8023 default: 8024 /* disallow mesh-specific things */ 8025 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION) 8026 return -EINVAL; 8027 if (params->local_pm) 8028 return -EINVAL; 8029 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE) 8030 return -EINVAL; 8031 } 8032 8033 if (statype != CFG80211_STA_TDLS_PEER_SETUP && 8034 statype != CFG80211_STA_TDLS_PEER_ACTIVE) { 8035 /* TDLS can't be set, ... */ 8036 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) 8037 return -EINVAL; 8038 /* 8039 * ... but don't bother the driver with it. This works around 8040 * a hostapd/wpa_supplicant issue -- it always includes the 8041 * TLDS_PEER flag in the mask even for AP mode. 8042 */ 8043 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER); 8044 } 8045 8046 if (statype != CFG80211_STA_TDLS_PEER_SETUP && 8047 statype != CFG80211_STA_AP_CLIENT_UNASSOC) { 8048 /* reject other things that can't change */ 8049 if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD) 8050 return -EINVAL; 8051 if (params->sta_modify_mask & STATION_PARAM_APPLY_CAPABILITY) 8052 return -EINVAL; 8053 if (params->link_sta_params.supported_rates) 8054 return -EINVAL; 8055 if (params->ext_capab || params->link_sta_params.ht_capa || 8056 params->link_sta_params.vht_capa || 8057 params->link_sta_params.he_capa || 8058 params->link_sta_params.eht_capa) 8059 return -EINVAL; 8060 if (params->sta_flags_mask & BIT(NL80211_STA_FLAG_SPP_AMSDU)) 8061 return -EINVAL; 8062 } 8063 8064 if (statype != CFG80211_STA_AP_CLIENT && 8065 statype != CFG80211_STA_AP_CLIENT_UNASSOC) { 8066 if (params->vlan) 8067 return -EINVAL; 8068 } 8069 8070 /* Accept EMLSR capabilities only for AP client before association */ 8071 if (statype != CFG80211_STA_AP_CLIENT_UNASSOC && 8072 params->eml_cap_present) 8073 return -EINVAL; 8074 8075 switch (statype) { 8076 case CFG80211_STA_AP_MLME_CLIENT: 8077 /* Use this only for authorizing/unauthorizing a station */ 8078 if (!(params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED))) 8079 return -EOPNOTSUPP; 8080 break; 8081 case CFG80211_STA_AP_CLIENT: 8082 case CFG80211_STA_AP_CLIENT_UNASSOC: 8083 /* accept only the listed bits */ 8084 if (params->sta_flags_mask & 8085 ~(BIT(NL80211_STA_FLAG_AUTHORIZED) | 8086 BIT(NL80211_STA_FLAG_AUTHENTICATED) | 8087 BIT(NL80211_STA_FLAG_ASSOCIATED) | 8088 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) | 8089 BIT(NL80211_STA_FLAG_WME) | 8090 BIT(NL80211_STA_FLAG_MFP) | 8091 BIT(NL80211_STA_FLAG_SPP_AMSDU))) 8092 return -EINVAL; 8093 8094 /* but authenticated/associated only if driver handles it */ 8095 if (!(wiphy->features & NL80211_FEATURE_FULL_AP_CLIENT_STATE) && 8096 params->sta_flags_mask & 8097 (BIT(NL80211_STA_FLAG_AUTHENTICATED) | 8098 BIT(NL80211_STA_FLAG_ASSOCIATED))) 8099 return -EINVAL; 8100 break; 8101 case CFG80211_STA_IBSS: 8102 case CFG80211_STA_AP_STA: 8103 /* reject any changes other than AUTHORIZED */ 8104 if (params->sta_flags_mask & ~BIT(NL80211_STA_FLAG_AUTHORIZED)) 8105 return -EINVAL; 8106 break; 8107 case CFG80211_STA_TDLS_PEER_SETUP: 8108 /* reject any changes other than AUTHORIZED or WME */ 8109 if (params->sta_flags_mask & ~(BIT(NL80211_STA_FLAG_AUTHORIZED) | 8110 BIT(NL80211_STA_FLAG_WME))) 8111 return -EINVAL; 8112 /* force (at least) rates when authorizing */ 8113 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_AUTHORIZED) && 8114 !params->link_sta_params.supported_rates) 8115 return -EINVAL; 8116 break; 8117 case CFG80211_STA_TDLS_PEER_ACTIVE: 8118 /* reject any changes */ 8119 return -EINVAL; 8120 case CFG80211_STA_MESH_PEER_KERNEL: 8121 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE) 8122 return -EINVAL; 8123 break; 8124 case CFG80211_STA_MESH_PEER_USER: 8125 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION && 8126 params->plink_action != NL80211_PLINK_ACTION_BLOCK) 8127 return -EINVAL; 8128 break; 8129 } 8130 8131 /* 8132 * Older kernel versions ignored this attribute entirely, so don't 8133 * reject attempts to update it but mark it as unused instead so the 8134 * driver won't look at the data. 8135 */ 8136 if (statype != CFG80211_STA_AP_CLIENT_UNASSOC && 8137 statype != CFG80211_STA_TDLS_PEER_SETUP) 8138 params->link_sta_params.opmode_notif_used = false; 8139 8140 return 0; 8141 } 8142 EXPORT_SYMBOL(cfg80211_check_station_change); 8143 8144 /* 8145 * Get vlan interface making sure it is running and on the right wiphy. 8146 */ 8147 static struct net_device *get_vlan(struct genl_info *info, 8148 struct cfg80211_registered_device *rdev) 8149 { 8150 struct nlattr *vlanattr = info->attrs[NL80211_ATTR_STA_VLAN]; 8151 struct net_device *v; 8152 int ret; 8153 8154 if (!vlanattr) 8155 return NULL; 8156 8157 v = dev_get_by_index(genl_info_net(info), nla_get_u32(vlanattr)); 8158 if (!v) 8159 return ERR_PTR(-ENODEV); 8160 8161 if (!v->ieee80211_ptr || v->ieee80211_ptr->wiphy != &rdev->wiphy) { 8162 ret = -EINVAL; 8163 goto error; 8164 } 8165 8166 if (v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN && 8167 v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP && 8168 v->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) { 8169 ret = -EINVAL; 8170 goto error; 8171 } 8172 8173 if (!netif_running(v)) { 8174 ret = -ENETDOWN; 8175 goto error; 8176 } 8177 8178 return v; 8179 error: 8180 dev_put(v); 8181 return ERR_PTR(ret); 8182 } 8183 8184 static int nl80211_parse_sta_wme(struct genl_info *info, 8185 struct station_parameters *params) 8186 { 8187 struct nlattr *tb[NL80211_STA_WME_MAX + 1]; 8188 struct nlattr *nla; 8189 int err; 8190 8191 /* parse WME attributes if present */ 8192 if (!info->attrs[NL80211_ATTR_STA_WME]) 8193 return 0; 8194 8195 nla = info->attrs[NL80211_ATTR_STA_WME]; 8196 err = nla_parse_nested_deprecated(tb, NL80211_STA_WME_MAX, nla, 8197 nl80211_sta_wme_policy, 8198 info->extack); 8199 if (err) 8200 return err; 8201 8202 if (tb[NL80211_STA_WME_UAPSD_QUEUES]) 8203 params->uapsd_queues = nla_get_u8( 8204 tb[NL80211_STA_WME_UAPSD_QUEUES]); 8205 if (params->uapsd_queues & ~IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK) 8206 return -EINVAL; 8207 8208 if (tb[NL80211_STA_WME_MAX_SP]) 8209 params->max_sp = nla_get_u8(tb[NL80211_STA_WME_MAX_SP]); 8210 8211 if (params->max_sp & ~IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK) 8212 return -EINVAL; 8213 8214 params->sta_modify_mask |= STATION_PARAM_APPLY_UAPSD; 8215 8216 return 0; 8217 } 8218 8219 static int nl80211_parse_sta_channel_info(struct genl_info *info, 8220 struct station_parameters *params) 8221 { 8222 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]) { 8223 params->supported_channels = 8224 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]); 8225 params->supported_channels_len = 8226 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]); 8227 /* 8228 * Need to include at least one (first channel, number of 8229 * channels) tuple for each subband (checked in policy), 8230 * and must have proper tuples for the rest of the data as well. 8231 */ 8232 if (params->supported_channels_len % 2) 8233 return -EINVAL; 8234 } 8235 8236 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]) { 8237 params->supported_oper_classes = 8238 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]); 8239 params->supported_oper_classes_len = 8240 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]); 8241 } 8242 return 0; 8243 } 8244 8245 static int nl80211_set_station_tdls(struct genl_info *info, 8246 struct station_parameters *params) 8247 { 8248 int err; 8249 /* Dummy STA entry gets updated once the peer capabilities are known */ 8250 if (info->attrs[NL80211_ATTR_PEER_AID]) 8251 params->aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]); 8252 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) 8253 params->link_sta_params.ht_capa = 8254 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]); 8255 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) 8256 params->link_sta_params.vht_capa = 8257 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]); 8258 if (info->attrs[NL80211_ATTR_HE_CAPABILITY]) { 8259 params->link_sta_params.he_capa = 8260 nla_data(info->attrs[NL80211_ATTR_HE_CAPABILITY]); 8261 params->link_sta_params.he_capa_len = 8262 nla_len(info->attrs[NL80211_ATTR_HE_CAPABILITY]); 8263 8264 if (info->attrs[NL80211_ATTR_EHT_CAPABILITY]) { 8265 params->link_sta_params.eht_capa = 8266 nla_data(info->attrs[NL80211_ATTR_EHT_CAPABILITY]); 8267 params->link_sta_params.eht_capa_len = 8268 nla_len(info->attrs[NL80211_ATTR_EHT_CAPABILITY]); 8269 8270 if (!ieee80211_eht_capa_size_ok((const u8 *)params->link_sta_params.he_capa, 8271 (const u8 *)params->link_sta_params.eht_capa, 8272 params->link_sta_params.eht_capa_len, 8273 false)) 8274 return -EINVAL; 8275 } 8276 } 8277 8278 if (info->attrs[NL80211_ATTR_S1G_CAPABILITY]) 8279 params->link_sta_params.s1g_capa = 8280 nla_data(info->attrs[NL80211_ATTR_S1G_CAPABILITY]); 8281 8282 err = nl80211_parse_sta_channel_info(info, params); 8283 if (err) 8284 return err; 8285 8286 return nl80211_parse_sta_wme(info, params); 8287 } 8288 8289 static int nl80211_parse_sta_txpower_setting(struct genl_info *info, 8290 struct sta_txpwr *txpwr, 8291 bool *txpwr_set) 8292 { 8293 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 8294 int idx; 8295 8296 if (info->attrs[NL80211_ATTR_STA_TX_POWER_SETTING]) { 8297 if (!rdev->ops->set_tx_power || 8298 !wiphy_ext_feature_isset(&rdev->wiphy, 8299 NL80211_EXT_FEATURE_STA_TX_PWR)) 8300 return -EOPNOTSUPP; 8301 8302 idx = NL80211_ATTR_STA_TX_POWER_SETTING; 8303 txpwr->type = nla_get_u8(info->attrs[idx]); 8304 8305 if (txpwr->type == NL80211_TX_POWER_LIMITED) { 8306 idx = NL80211_ATTR_STA_TX_POWER; 8307 8308 if (info->attrs[idx]) 8309 txpwr->power = nla_get_s16(info->attrs[idx]); 8310 else 8311 return -EINVAL; 8312 } 8313 8314 *txpwr_set = true; 8315 } else { 8316 *txpwr_set = false; 8317 } 8318 8319 return 0; 8320 } 8321 8322 static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info) 8323 { 8324 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 8325 struct net_device *dev = info->user_ptr[1]; 8326 struct station_parameters params; 8327 u8 *mac_addr; 8328 int err; 8329 8330 memset(¶ms, 0, sizeof(params)); 8331 8332 if (!rdev->ops->change_station) 8333 return -EOPNOTSUPP; 8334 8335 /* 8336 * AID and listen_interval properties can be set only for unassociated 8337 * station. Include these parameters here and will check them in 8338 * cfg80211_check_station_change(). 8339 */ 8340 if (info->attrs[NL80211_ATTR_STA_AID]) 8341 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]); 8342 8343 if (info->attrs[NL80211_ATTR_VLAN_ID]) 8344 params.vlan_id = nla_get_u16(info->attrs[NL80211_ATTR_VLAN_ID]); 8345 8346 if (info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]) 8347 params.listen_interval = 8348 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]); 8349 else 8350 params.listen_interval = -1; 8351 8352 if (info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]) 8353 params.support_p2p_ps = 8354 nla_get_u8(info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]); 8355 else 8356 params.support_p2p_ps = -1; 8357 8358 if (!info->attrs[NL80211_ATTR_MAC]) 8359 return -EINVAL; 8360 8361 params.link_sta_params.link_id = 8362 nl80211_link_id_or_invalid(info->attrs); 8363 8364 if (info->attrs[NL80211_ATTR_MLD_ADDR]) { 8365 /* If MLD_ADDR attribute is set then this is an MLD station 8366 * and the MLD_ADDR attribute holds the MLD address and the 8367 * MAC attribute holds for the LINK address. 8368 * In that case, the link_id is also expected to be valid. 8369 */ 8370 if (params.link_sta_params.link_id < 0) 8371 return -EINVAL; 8372 8373 mac_addr = nla_data(info->attrs[NL80211_ATTR_MLD_ADDR]); 8374 params.link_sta_params.mld_mac = mac_addr; 8375 params.link_sta_params.link_mac = 8376 nla_data(info->attrs[NL80211_ATTR_MAC]); 8377 if (!is_valid_ether_addr(params.link_sta_params.link_mac)) 8378 return -EINVAL; 8379 } else { 8380 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]); 8381 } 8382 8383 8384 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) { 8385 params.link_sta_params.supported_rates = 8386 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]); 8387 params.link_sta_params.supported_rates_len = 8388 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]); 8389 } 8390 8391 if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) { 8392 params.capability = 8393 nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]); 8394 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY; 8395 } 8396 8397 if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) { 8398 params.ext_capab = 8399 nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]); 8400 params.ext_capab_len = 8401 nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]); 8402 } 8403 8404 if (parse_station_flags(info, dev->ieee80211_ptr->iftype, ¶ms)) 8405 return -EINVAL; 8406 8407 if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION]) 8408 params.plink_action = 8409 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]); 8410 8411 if (info->attrs[NL80211_ATTR_STA_PLINK_STATE]) { 8412 params.plink_state = 8413 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_STATE]); 8414 if (info->attrs[NL80211_ATTR_MESH_PEER_AID]) 8415 params.peer_aid = nla_get_u16( 8416 info->attrs[NL80211_ATTR_MESH_PEER_AID]); 8417 params.sta_modify_mask |= STATION_PARAM_APPLY_PLINK_STATE; 8418 } 8419 8420 if (info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]) 8421 params.local_pm = nla_get_u32( 8422 info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]); 8423 8424 if (info->attrs[NL80211_ATTR_OPMODE_NOTIF]) { 8425 params.link_sta_params.opmode_notif_used = true; 8426 params.link_sta_params.opmode_notif = 8427 nla_get_u8(info->attrs[NL80211_ATTR_OPMODE_NOTIF]); 8428 } 8429 8430 if (info->attrs[NL80211_ATTR_HE_6GHZ_CAPABILITY]) 8431 params.link_sta_params.he_6ghz_capa = 8432 nla_data(info->attrs[NL80211_ATTR_HE_6GHZ_CAPABILITY]); 8433 8434 if (info->attrs[NL80211_ATTR_EML_CAPABILITY]) { 8435 params.eml_cap_present = true; 8436 params.eml_cap = 8437 nla_get_u16(info->attrs[NL80211_ATTR_EML_CAPABILITY]); 8438 } 8439 8440 if (info->attrs[NL80211_ATTR_AIRTIME_WEIGHT]) 8441 params.airtime_weight = 8442 nla_get_u16(info->attrs[NL80211_ATTR_AIRTIME_WEIGHT]); 8443 8444 if (params.airtime_weight && 8445 !wiphy_ext_feature_isset(&rdev->wiphy, 8446 NL80211_EXT_FEATURE_AIRTIME_FAIRNESS)) 8447 return -EOPNOTSUPP; 8448 8449 err = nl80211_parse_sta_txpower_setting(info, 8450 ¶ms.link_sta_params.txpwr, 8451 ¶ms.link_sta_params.txpwr_set); 8452 if (err) 8453 return err; 8454 8455 /* Include parameters for TDLS peer (will check later) */ 8456 err = nl80211_set_station_tdls(info, ¶ms); 8457 if (err) 8458 return err; 8459 8460 params.vlan = get_vlan(info, rdev); 8461 if (IS_ERR(params.vlan)) 8462 return PTR_ERR(params.vlan); 8463 8464 switch (dev->ieee80211_ptr->iftype) { 8465 case NL80211_IFTYPE_AP: 8466 case NL80211_IFTYPE_AP_VLAN: 8467 case NL80211_IFTYPE_P2P_GO: 8468 case NL80211_IFTYPE_P2P_CLIENT: 8469 case NL80211_IFTYPE_STATION: 8470 case NL80211_IFTYPE_ADHOC: 8471 case NL80211_IFTYPE_MESH_POINT: 8472 break; 8473 default: 8474 err = -EOPNOTSUPP; 8475 goto out_put_vlan; 8476 } 8477 8478 /* driver will call cfg80211_check_station_change() */ 8479 err = rdev_change_station(rdev, dev, mac_addr, ¶ms); 8480 8481 out_put_vlan: 8482 dev_put(params.vlan); 8483 8484 return err; 8485 } 8486 8487 static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info) 8488 { 8489 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 8490 int err; 8491 struct net_device *dev = info->user_ptr[1]; 8492 struct wireless_dev *wdev = dev->ieee80211_ptr; 8493 struct station_parameters params; 8494 u8 *mac_addr = NULL; 8495 u32 auth_assoc = BIT(NL80211_STA_FLAG_AUTHENTICATED) | 8496 BIT(NL80211_STA_FLAG_ASSOCIATED); 8497 8498 memset(¶ms, 0, sizeof(params)); 8499 8500 if (!rdev->ops->add_station) 8501 return -EOPNOTSUPP; 8502 8503 if (!info->attrs[NL80211_ATTR_MAC]) 8504 return -EINVAL; 8505 8506 if (!info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]) 8507 return -EINVAL; 8508 8509 if (!info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) 8510 return -EINVAL; 8511 8512 if (!info->attrs[NL80211_ATTR_STA_AID] && 8513 !info->attrs[NL80211_ATTR_PEER_AID]) 8514 return -EINVAL; 8515 8516 params.link_sta_params.link_id = 8517 nl80211_link_id_or_invalid(info->attrs); 8518 8519 if (info->attrs[NL80211_ATTR_MLD_ADDR]) { 8520 mac_addr = nla_data(info->attrs[NL80211_ATTR_MLD_ADDR]); 8521 params.link_sta_params.mld_mac = mac_addr; 8522 params.link_sta_params.link_mac = 8523 nla_data(info->attrs[NL80211_ATTR_MAC]); 8524 if (!is_valid_ether_addr(params.link_sta_params.link_mac)) 8525 return -EINVAL; 8526 } else { 8527 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]); 8528 } 8529 8530 params.link_sta_params.supported_rates = 8531 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]); 8532 params.link_sta_params.supported_rates_len = 8533 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]); 8534 params.listen_interval = 8535 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]); 8536 8537 if (info->attrs[NL80211_ATTR_VLAN_ID]) 8538 params.vlan_id = nla_get_u16(info->attrs[NL80211_ATTR_VLAN_ID]); 8539 8540 if (info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]) { 8541 params.support_p2p_ps = 8542 nla_get_u8(info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]); 8543 } else { 8544 /* 8545 * if not specified, assume it's supported for P2P GO interface, 8546 * and is NOT supported for AP interface 8547 */ 8548 params.support_p2p_ps = 8549 dev->ieee80211_ptr->iftype == NL80211_IFTYPE_P2P_GO; 8550 } 8551 8552 if (info->attrs[NL80211_ATTR_PEER_AID]) 8553 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]); 8554 else 8555 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]); 8556 8557 if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) { 8558 params.capability = 8559 nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]); 8560 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY; 8561 } 8562 8563 if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) { 8564 params.ext_capab = 8565 nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]); 8566 params.ext_capab_len = 8567 nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]); 8568 } 8569 8570 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) 8571 params.link_sta_params.ht_capa = 8572 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]); 8573 8574 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) 8575 params.link_sta_params.vht_capa = 8576 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]); 8577 8578 if (info->attrs[NL80211_ATTR_HE_CAPABILITY]) { 8579 params.link_sta_params.he_capa = 8580 nla_data(info->attrs[NL80211_ATTR_HE_CAPABILITY]); 8581 params.link_sta_params.he_capa_len = 8582 nla_len(info->attrs[NL80211_ATTR_HE_CAPABILITY]); 8583 8584 if (info->attrs[NL80211_ATTR_EHT_CAPABILITY]) { 8585 params.link_sta_params.eht_capa = 8586 nla_data(info->attrs[NL80211_ATTR_EHT_CAPABILITY]); 8587 params.link_sta_params.eht_capa_len = 8588 nla_len(info->attrs[NL80211_ATTR_EHT_CAPABILITY]); 8589 8590 if (!ieee80211_eht_capa_size_ok((const u8 *)params.link_sta_params.he_capa, 8591 (const u8 *)params.link_sta_params.eht_capa, 8592 params.link_sta_params.eht_capa_len, 8593 false)) 8594 return -EINVAL; 8595 } 8596 } 8597 8598 if (info->attrs[NL80211_ATTR_EML_CAPABILITY]) { 8599 params.eml_cap_present = true; 8600 params.eml_cap = 8601 nla_get_u16(info->attrs[NL80211_ATTR_EML_CAPABILITY]); 8602 } 8603 8604 if (info->attrs[NL80211_ATTR_HE_6GHZ_CAPABILITY]) 8605 params.link_sta_params.he_6ghz_capa = 8606 nla_data(info->attrs[NL80211_ATTR_HE_6GHZ_CAPABILITY]); 8607 8608 if (info->attrs[NL80211_ATTR_S1G_CAPABILITY]) 8609 params.link_sta_params.s1g_capa = 8610 nla_data(info->attrs[NL80211_ATTR_S1G_CAPABILITY]); 8611 8612 if (info->attrs[NL80211_ATTR_OPMODE_NOTIF]) { 8613 params.link_sta_params.opmode_notif_used = true; 8614 params.link_sta_params.opmode_notif = 8615 nla_get_u8(info->attrs[NL80211_ATTR_OPMODE_NOTIF]); 8616 } 8617 8618 if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION]) 8619 params.plink_action = 8620 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]); 8621 8622 if (info->attrs[NL80211_ATTR_AIRTIME_WEIGHT]) 8623 params.airtime_weight = 8624 nla_get_u16(info->attrs[NL80211_ATTR_AIRTIME_WEIGHT]); 8625 8626 if (params.airtime_weight && 8627 !wiphy_ext_feature_isset(&rdev->wiphy, 8628 NL80211_EXT_FEATURE_AIRTIME_FAIRNESS)) 8629 return -EOPNOTSUPP; 8630 8631 err = nl80211_parse_sta_txpower_setting(info, 8632 ¶ms.link_sta_params.txpwr, 8633 ¶ms.link_sta_params.txpwr_set); 8634 if (err) 8635 return err; 8636 8637 err = nl80211_parse_sta_channel_info(info, ¶ms); 8638 if (err) 8639 return err; 8640 8641 err = nl80211_parse_sta_wme(info, ¶ms); 8642 if (err) 8643 return err; 8644 8645 if (parse_station_flags(info, dev->ieee80211_ptr->iftype, ¶ms)) 8646 return -EINVAL; 8647 8648 /* HT/VHT requires QoS, but if we don't have that just ignore HT/VHT 8649 * as userspace might just pass through the capabilities from the IEs 8650 * directly, rather than enforcing this restriction and returning an 8651 * error in this case. 8652 */ 8653 if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME))) { 8654 params.link_sta_params.ht_capa = NULL; 8655 params.link_sta_params.vht_capa = NULL; 8656 8657 /* HE and EHT require WME */ 8658 if (params.link_sta_params.he_capa_len || 8659 params.link_sta_params.he_6ghz_capa || 8660 params.link_sta_params.eht_capa_len) 8661 return -EINVAL; 8662 } 8663 8664 /* Ensure that HT/VHT capabilities are not set for 6 GHz HE STA */ 8665 if (params.link_sta_params.he_6ghz_capa && 8666 (params.link_sta_params.ht_capa || params.link_sta_params.vht_capa)) 8667 return -EINVAL; 8668 8669 /* When you run into this, adjust the code below for the new flag */ 8670 BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 8); 8671 8672 switch (dev->ieee80211_ptr->iftype) { 8673 case NL80211_IFTYPE_AP: 8674 case NL80211_IFTYPE_AP_VLAN: 8675 case NL80211_IFTYPE_P2P_GO: 8676 /* ignore WME attributes if iface/sta is not capable */ 8677 if (!(rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) || 8678 !(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME))) 8679 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD; 8680 8681 /* TDLS peers cannot be added */ 8682 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) || 8683 info->attrs[NL80211_ATTR_PEER_AID]) 8684 return -EINVAL; 8685 /* but don't bother the driver with it */ 8686 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER); 8687 8688 /* allow authenticated/associated only if driver handles it */ 8689 if (!(rdev->wiphy.features & 8690 NL80211_FEATURE_FULL_AP_CLIENT_STATE) && 8691 params.sta_flags_mask & auth_assoc) 8692 return -EINVAL; 8693 8694 if (!wiphy_ext_feature_isset(&rdev->wiphy, 8695 NL80211_EXT_FEATURE_SPP_AMSDU_SUPPORT) && 8696 params.sta_flags_mask & BIT(NL80211_STA_FLAG_SPP_AMSDU)) 8697 return -EINVAL; 8698 8699 /* Older userspace, or userspace wanting to be compatible with 8700 * !NL80211_FEATURE_FULL_AP_CLIENT_STATE, will not set the auth 8701 * and assoc flags in the mask, but assumes the station will be 8702 * added as associated anyway since this was the required driver 8703 * behaviour before NL80211_FEATURE_FULL_AP_CLIENT_STATE was 8704 * introduced. 8705 * In order to not bother drivers with this quirk in the API 8706 * set the flags in both the mask and set for new stations in 8707 * this case. 8708 */ 8709 if (!(params.sta_flags_mask & auth_assoc)) { 8710 params.sta_flags_mask |= auth_assoc; 8711 params.sta_flags_set |= auth_assoc; 8712 } 8713 8714 /* must be last in here for error handling */ 8715 params.vlan = get_vlan(info, rdev); 8716 if (IS_ERR(params.vlan)) 8717 return PTR_ERR(params.vlan); 8718 break; 8719 case NL80211_IFTYPE_MESH_POINT: 8720 /* ignore uAPSD data */ 8721 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD; 8722 8723 /* associated is disallowed */ 8724 if (params.sta_flags_mask & BIT(NL80211_STA_FLAG_ASSOCIATED)) 8725 return -EINVAL; 8726 /* TDLS peers cannot be added */ 8727 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) || 8728 info->attrs[NL80211_ATTR_PEER_AID]) 8729 return -EINVAL; 8730 break; 8731 case NL80211_IFTYPE_STATION: 8732 case NL80211_IFTYPE_P2P_CLIENT: 8733 /* ignore uAPSD data */ 8734 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD; 8735 8736 /* these are disallowed */ 8737 if (params.sta_flags_mask & 8738 (BIT(NL80211_STA_FLAG_ASSOCIATED) | 8739 BIT(NL80211_STA_FLAG_AUTHENTICATED))) 8740 return -EINVAL; 8741 /* Only TDLS peers can be added */ 8742 if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))) 8743 return -EINVAL; 8744 /* Can only add if TDLS ... */ 8745 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS)) 8746 return -EOPNOTSUPP; 8747 /* ... with external setup is supported */ 8748 if (!(rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP)) 8749 return -EOPNOTSUPP; 8750 /* 8751 * Older wpa_supplicant versions always mark the TDLS peer 8752 * as authorized, but it shouldn't yet be. 8753 */ 8754 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_AUTHORIZED); 8755 break; 8756 default: 8757 return -EOPNOTSUPP; 8758 } 8759 8760 /* be aware of params.vlan when changing code here */ 8761 8762 if (wdev->valid_links) { 8763 if (params.link_sta_params.link_id < 0) { 8764 err = -EINVAL; 8765 goto out; 8766 } 8767 if (!(wdev->valid_links & BIT(params.link_sta_params.link_id))) { 8768 err = -ENOLINK; 8769 goto out; 8770 } 8771 } else { 8772 if (params.link_sta_params.link_id >= 0) { 8773 err = -EINVAL; 8774 goto out; 8775 } 8776 } 8777 err = rdev_add_station(rdev, dev, mac_addr, ¶ms); 8778 out: 8779 dev_put(params.vlan); 8780 return err; 8781 } 8782 8783 static int nl80211_del_station(struct sk_buff *skb, struct genl_info *info) 8784 { 8785 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 8786 struct net_device *dev = info->user_ptr[1]; 8787 struct wireless_dev *wdev = dev->ieee80211_ptr; 8788 struct station_del_parameters params; 8789 int link_id = nl80211_link_id_or_invalid(info->attrs); 8790 8791 memset(¶ms, 0, sizeof(params)); 8792 8793 if (info->attrs[NL80211_ATTR_MAC]) 8794 params.mac = nla_data(info->attrs[NL80211_ATTR_MAC]); 8795 8796 switch (wdev->iftype) { 8797 case NL80211_IFTYPE_AP: 8798 case NL80211_IFTYPE_AP_VLAN: 8799 case NL80211_IFTYPE_MESH_POINT: 8800 case NL80211_IFTYPE_P2P_GO: 8801 /* always accept these */ 8802 break; 8803 case NL80211_IFTYPE_ADHOC: 8804 /* conditionally accept */ 8805 if (wiphy_ext_feature_isset(&rdev->wiphy, 8806 NL80211_EXT_FEATURE_DEL_IBSS_STA)) 8807 break; 8808 return -EINVAL; 8809 default: 8810 return -EINVAL; 8811 } 8812 8813 if (!rdev->ops->del_station) 8814 return -EOPNOTSUPP; 8815 8816 if (info->attrs[NL80211_ATTR_MGMT_SUBTYPE]) { 8817 params.subtype = 8818 nla_get_u8(info->attrs[NL80211_ATTR_MGMT_SUBTYPE]); 8819 if (params.subtype != IEEE80211_STYPE_DISASSOC >> 4 && 8820 params.subtype != IEEE80211_STYPE_DEAUTH >> 4) 8821 return -EINVAL; 8822 } else { 8823 /* Default to Deauthentication frame */ 8824 params.subtype = IEEE80211_STYPE_DEAUTH >> 4; 8825 } 8826 8827 if (info->attrs[NL80211_ATTR_REASON_CODE]) { 8828 params.reason_code = 8829 nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]); 8830 if (params.reason_code == 0) 8831 return -EINVAL; /* 0 is reserved */ 8832 } else { 8833 /* Default to reason code 2 */ 8834 params.reason_code = WLAN_REASON_PREV_AUTH_NOT_VALID; 8835 } 8836 8837 /* Link ID not expected in case of non-ML operation */ 8838 if (!wdev->valid_links && link_id != -1) 8839 return -EINVAL; 8840 8841 /* If given, a valid link ID should be passed during MLO */ 8842 if (wdev->valid_links && link_id >= 0 && 8843 !(wdev->valid_links & BIT(link_id))) 8844 return -EINVAL; 8845 8846 params.link_id = link_id; 8847 8848 return rdev_del_station(rdev, dev, ¶ms); 8849 } 8850 8851 static int nl80211_send_mpath(struct sk_buff *msg, u32 portid, u32 seq, 8852 int flags, struct net_device *dev, 8853 u8 *dst, u8 *next_hop, 8854 struct mpath_info *pinfo) 8855 { 8856 void *hdr; 8857 struct nlattr *pinfoattr; 8858 8859 hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_MPATH); 8860 if (!hdr) 8861 return -1; 8862 8863 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) || 8864 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, dst) || 8865 nla_put(msg, NL80211_ATTR_MPATH_NEXT_HOP, ETH_ALEN, next_hop) || 8866 nla_put_u32(msg, NL80211_ATTR_GENERATION, pinfo->generation)) 8867 goto nla_put_failure; 8868 8869 pinfoattr = nla_nest_start_noflag(msg, NL80211_ATTR_MPATH_INFO); 8870 if (!pinfoattr) 8871 goto nla_put_failure; 8872 if ((pinfo->filled & MPATH_INFO_FRAME_QLEN) && 8873 nla_put_u32(msg, NL80211_MPATH_INFO_FRAME_QLEN, 8874 pinfo->frame_qlen)) 8875 goto nla_put_failure; 8876 if (((pinfo->filled & MPATH_INFO_SN) && 8877 nla_put_u32(msg, NL80211_MPATH_INFO_SN, pinfo->sn)) || 8878 ((pinfo->filled & MPATH_INFO_METRIC) && 8879 nla_put_u32(msg, NL80211_MPATH_INFO_METRIC, 8880 pinfo->metric)) || 8881 ((pinfo->filled & MPATH_INFO_EXPTIME) && 8882 nla_put_u32(msg, NL80211_MPATH_INFO_EXPTIME, 8883 pinfo->exptime)) || 8884 ((pinfo->filled & MPATH_INFO_FLAGS) && 8885 nla_put_u8(msg, NL80211_MPATH_INFO_FLAGS, 8886 pinfo->flags)) || 8887 ((pinfo->filled & MPATH_INFO_DISCOVERY_TIMEOUT) && 8888 nla_put_u32(msg, NL80211_MPATH_INFO_DISCOVERY_TIMEOUT, 8889 pinfo->discovery_timeout)) || 8890 ((pinfo->filled & MPATH_INFO_DISCOVERY_RETRIES) && 8891 nla_put_u8(msg, NL80211_MPATH_INFO_DISCOVERY_RETRIES, 8892 pinfo->discovery_retries)) || 8893 ((pinfo->filled & MPATH_INFO_HOP_COUNT) && 8894 nla_put_u8(msg, NL80211_MPATH_INFO_HOP_COUNT, 8895 pinfo->hop_count)) || 8896 ((pinfo->filled & MPATH_INFO_PATH_CHANGE) && 8897 nla_put_u32(msg, NL80211_MPATH_INFO_PATH_CHANGE, 8898 pinfo->path_change_count))) 8899 goto nla_put_failure; 8900 8901 nla_nest_end(msg, pinfoattr); 8902 8903 genlmsg_end(msg, hdr); 8904 return 0; 8905 8906 nla_put_failure: 8907 genlmsg_cancel(msg, hdr); 8908 return -EMSGSIZE; 8909 } 8910 8911 static int nl80211_dump_mpath(struct sk_buff *skb, 8912 struct netlink_callback *cb) 8913 { 8914 struct mpath_info pinfo; 8915 struct cfg80211_registered_device *rdev; 8916 struct wireless_dev *wdev; 8917 u8 dst[ETH_ALEN]; 8918 u8 next_hop[ETH_ALEN]; 8919 int path_idx = cb->args[2]; 8920 int err; 8921 8922 err = nl80211_prepare_wdev_dump(cb, &rdev, &wdev, NULL); 8923 if (err) 8924 return err; 8925 /* nl80211_prepare_wdev_dump acquired it in the successful case */ 8926 __acquire(&rdev->wiphy.mtx); 8927 8928 if (!rdev->ops->dump_mpath) { 8929 err = -EOPNOTSUPP; 8930 goto out_err; 8931 } 8932 8933 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) { 8934 err = -EOPNOTSUPP; 8935 goto out_err; 8936 } 8937 8938 while (1) { 8939 err = rdev_dump_mpath(rdev, wdev->netdev, path_idx, dst, 8940 next_hop, &pinfo); 8941 if (err == -ENOENT) 8942 break; 8943 if (err) 8944 goto out_err; 8945 8946 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid, 8947 cb->nlh->nlmsg_seq, NLM_F_MULTI, 8948 wdev->netdev, dst, next_hop, 8949 &pinfo) < 0) 8950 goto out; 8951 8952 path_idx++; 8953 } 8954 8955 out: 8956 cb->args[2] = path_idx; 8957 err = skb->len; 8958 out_err: 8959 wiphy_unlock(&rdev->wiphy); 8960 return err; 8961 } 8962 8963 static int nl80211_get_mpath(struct sk_buff *skb, struct genl_info *info) 8964 { 8965 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 8966 int err; 8967 struct net_device *dev = info->user_ptr[1]; 8968 struct mpath_info pinfo; 8969 struct sk_buff *msg; 8970 u8 *dst = NULL; 8971 u8 next_hop[ETH_ALEN]; 8972 8973 memset(&pinfo, 0, sizeof(pinfo)); 8974 8975 if (!info->attrs[NL80211_ATTR_MAC]) 8976 return -EINVAL; 8977 8978 dst = nla_data(info->attrs[NL80211_ATTR_MAC]); 8979 8980 if (!rdev->ops->get_mpath) 8981 return -EOPNOTSUPP; 8982 8983 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT) 8984 return -EOPNOTSUPP; 8985 8986 err = rdev_get_mpath(rdev, dev, dst, next_hop, &pinfo); 8987 if (err) 8988 return err; 8989 8990 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 8991 if (!msg) 8992 return -ENOMEM; 8993 8994 if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0, 8995 dev, dst, next_hop, &pinfo) < 0) { 8996 nlmsg_free(msg); 8997 return -ENOBUFS; 8998 } 8999 9000 return genlmsg_reply(msg, info); 9001 } 9002 9003 static int nl80211_set_mpath(struct sk_buff *skb, struct genl_info *info) 9004 { 9005 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 9006 struct net_device *dev = info->user_ptr[1]; 9007 u8 *dst = NULL; 9008 u8 *next_hop = NULL; 9009 9010 if (!info->attrs[NL80211_ATTR_MAC]) 9011 return -EINVAL; 9012 9013 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]) 9014 return -EINVAL; 9015 9016 dst = nla_data(info->attrs[NL80211_ATTR_MAC]); 9017 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]); 9018 9019 if (!rdev->ops->change_mpath) 9020 return -EOPNOTSUPP; 9021 9022 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT) 9023 return -EOPNOTSUPP; 9024 9025 return rdev_change_mpath(rdev, dev, dst, next_hop); 9026 } 9027 9028 static int nl80211_new_mpath(struct sk_buff *skb, struct genl_info *info) 9029 { 9030 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 9031 struct net_device *dev = info->user_ptr[1]; 9032 u8 *dst = NULL; 9033 u8 *next_hop = NULL; 9034 9035 if (!info->attrs[NL80211_ATTR_MAC]) 9036 return -EINVAL; 9037 9038 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]) 9039 return -EINVAL; 9040 9041 dst = nla_data(info->attrs[NL80211_ATTR_MAC]); 9042 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]); 9043 9044 if (!rdev->ops->add_mpath) 9045 return -EOPNOTSUPP; 9046 9047 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT) 9048 return -EOPNOTSUPP; 9049 9050 return rdev_add_mpath(rdev, dev, dst, next_hop); 9051 } 9052 9053 static int nl80211_del_mpath(struct sk_buff *skb, struct genl_info *info) 9054 { 9055 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 9056 struct net_device *dev = info->user_ptr[1]; 9057 u8 *dst = NULL; 9058 9059 if (info->attrs[NL80211_ATTR_MAC]) 9060 dst = nla_data(info->attrs[NL80211_ATTR_MAC]); 9061 9062 if (!rdev->ops->del_mpath) 9063 return -EOPNOTSUPP; 9064 9065 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT) 9066 return -EOPNOTSUPP; 9067 9068 return rdev_del_mpath(rdev, dev, dst); 9069 } 9070 9071 static int nl80211_get_mpp(struct sk_buff *skb, struct genl_info *info) 9072 { 9073 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 9074 int err; 9075 struct net_device *dev = info->user_ptr[1]; 9076 struct mpath_info pinfo; 9077 struct sk_buff *msg; 9078 u8 *dst = NULL; 9079 u8 mpp[ETH_ALEN]; 9080 9081 memset(&pinfo, 0, sizeof(pinfo)); 9082 9083 if (!info->attrs[NL80211_ATTR_MAC]) 9084 return -EINVAL; 9085 9086 dst = nla_data(info->attrs[NL80211_ATTR_MAC]); 9087 9088 if (!rdev->ops->get_mpp) 9089 return -EOPNOTSUPP; 9090 9091 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT) 9092 return -EOPNOTSUPP; 9093 9094 err = rdev_get_mpp(rdev, dev, dst, mpp, &pinfo); 9095 if (err) 9096 return err; 9097 9098 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 9099 if (!msg) 9100 return -ENOMEM; 9101 9102 if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0, 9103 dev, dst, mpp, &pinfo) < 0) { 9104 nlmsg_free(msg); 9105 return -ENOBUFS; 9106 } 9107 9108 return genlmsg_reply(msg, info); 9109 } 9110 9111 static int nl80211_dump_mpp(struct sk_buff *skb, 9112 struct netlink_callback *cb) 9113 { 9114 struct mpath_info pinfo; 9115 struct cfg80211_registered_device *rdev; 9116 struct wireless_dev *wdev; 9117 u8 dst[ETH_ALEN]; 9118 u8 mpp[ETH_ALEN]; 9119 int path_idx = cb->args[2]; 9120 int err; 9121 9122 err = nl80211_prepare_wdev_dump(cb, &rdev, &wdev, NULL); 9123 if (err) 9124 return err; 9125 /* nl80211_prepare_wdev_dump acquired it in the successful case */ 9126 __acquire(&rdev->wiphy.mtx); 9127 9128 if (!rdev->ops->dump_mpp) { 9129 err = -EOPNOTSUPP; 9130 goto out_err; 9131 } 9132 9133 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) { 9134 err = -EOPNOTSUPP; 9135 goto out_err; 9136 } 9137 9138 while (1) { 9139 err = rdev_dump_mpp(rdev, wdev->netdev, path_idx, dst, 9140 mpp, &pinfo); 9141 if (err == -ENOENT) 9142 break; 9143 if (err) 9144 goto out_err; 9145 9146 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid, 9147 cb->nlh->nlmsg_seq, NLM_F_MULTI, 9148 wdev->netdev, dst, mpp, 9149 &pinfo) < 0) 9150 goto out; 9151 9152 path_idx++; 9153 } 9154 9155 out: 9156 cb->args[2] = path_idx; 9157 err = skb->len; 9158 out_err: 9159 wiphy_unlock(&rdev->wiphy); 9160 return err; 9161 } 9162 9163 static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info) 9164 { 9165 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 9166 struct net_device *dev = info->user_ptr[1]; 9167 struct bss_parameters params; 9168 u32 bss_param_support = rdev->wiphy.bss_param_support; 9169 u32 changed = 0; 9170 bool strict; 9171 9172 memset(¶ms, 0, sizeof(params)); 9173 params.link_id = nl80211_link_id_or_invalid(info->attrs); 9174 /* default to not changing parameters */ 9175 params.use_cts_prot = -1; 9176 params.use_short_preamble = -1; 9177 params.use_short_slot_time = -1; 9178 params.ap_isolate = -1; 9179 params.ht_opmode = -1; 9180 params.p2p_ctwindow = -1; 9181 params.p2p_opp_ps = -1; 9182 9183 strict = nla_get_flag(info->attrs[NL80211_ATTR_BSS_PARAM]); 9184 if (info->attrs[NL80211_ATTR_BSS_CTS_PROT]) { 9185 if (strict && !(bss_param_support & WIPHY_BSS_PARAM_CTS_PROT)) 9186 return -EINVAL; 9187 params.use_cts_prot = 9188 nla_get_u8(info->attrs[NL80211_ATTR_BSS_CTS_PROT]); 9189 changed |= WIPHY_BSS_PARAM_CTS_PROT; 9190 } 9191 if (info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]) { 9192 if (strict && 9193 !(bss_param_support & WIPHY_BSS_PARAM_SHORT_PREAMBLE)) 9194 return -EINVAL; 9195 params.use_short_preamble = 9196 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]); 9197 changed |= WIPHY_BSS_PARAM_SHORT_PREAMBLE; 9198 } 9199 if (info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]) { 9200 if (strict && 9201 !(bss_param_support & WIPHY_BSS_PARAM_SHORT_SLOT_TIME)) 9202 return -EINVAL; 9203 params.use_short_slot_time = 9204 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]); 9205 changed |= WIPHY_BSS_PARAM_SHORT_SLOT_TIME; 9206 } 9207 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) { 9208 if (strict && 9209 !(bss_param_support & WIPHY_BSS_PARAM_BASIC_RATES)) 9210 return -EINVAL; 9211 params.basic_rates = 9212 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]); 9213 params.basic_rates_len = 9214 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]); 9215 changed |= WIPHY_BSS_PARAM_BASIC_RATES; 9216 } 9217 if (info->attrs[NL80211_ATTR_AP_ISOLATE]) { 9218 if (strict && !(bss_param_support & WIPHY_BSS_PARAM_AP_ISOLATE)) 9219 return -EINVAL; 9220 params.ap_isolate = 9221 !!nla_get_u8(info->attrs[NL80211_ATTR_AP_ISOLATE]); 9222 changed |= WIPHY_BSS_PARAM_AP_ISOLATE; 9223 } 9224 if (info->attrs[NL80211_ATTR_BSS_HT_OPMODE]) { 9225 if (strict && !(bss_param_support & WIPHY_BSS_PARAM_HT_OPMODE)) 9226 return -EINVAL; 9227 params.ht_opmode = 9228 nla_get_u16(info->attrs[NL80211_ATTR_BSS_HT_OPMODE]); 9229 changed |= WIPHY_BSS_PARAM_HT_OPMODE; 9230 } 9231 9232 if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) { 9233 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) 9234 return -EINVAL; 9235 params.p2p_ctwindow = 9236 nla_get_u8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]); 9237 if (params.p2p_ctwindow != 0 && 9238 !(bss_param_support & WIPHY_BSS_PARAM_P2P_CTWINDOW)) 9239 return -EINVAL; 9240 changed |= WIPHY_BSS_PARAM_P2P_CTWINDOW; 9241 } 9242 9243 if (info->attrs[NL80211_ATTR_P2P_OPPPS]) { 9244 u8 tmp; 9245 9246 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) 9247 return -EINVAL; 9248 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]); 9249 if (tmp && !(bss_param_support & WIPHY_BSS_PARAM_P2P_OPPPS)) 9250 return -EINVAL; 9251 params.p2p_opp_ps = tmp; 9252 if (params.p2p_opp_ps && 9253 !(rdev->wiphy.bss_param_support & WIPHY_BSS_PARAM_P2P_OPPPS)) 9254 return -EINVAL; 9255 } 9256 9257 if (!rdev->ops->change_bss) 9258 return -EOPNOTSUPP; 9259 9260 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP && 9261 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) 9262 return -EOPNOTSUPP; 9263 9264 changed &= rdev->wiphy.bss_param_support; 9265 if (!changed) 9266 return 0; 9267 9268 return rdev_change_bss(rdev, dev, ¶ms); 9269 } 9270 9271 static int nl80211_req_set_reg(struct sk_buff *skb, struct genl_info *info) 9272 { 9273 char *data = NULL; 9274 bool is_indoor; 9275 enum nl80211_user_reg_hint_type user_reg_hint_type; 9276 u32 owner_nlportid; 9277 9278 /* 9279 * You should only get this when cfg80211 hasn't yet initialized 9280 * completely when built-in to the kernel right between the time 9281 * window between nl80211_init() and regulatory_init(), if that is 9282 * even possible. 9283 */ 9284 if (unlikely(!rcu_access_pointer(cfg80211_regdomain))) 9285 return -EINPROGRESS; 9286 9287 user_reg_hint_type = 9288 nla_get_u32_default(info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE], 9289 NL80211_USER_REG_HINT_USER); 9290 9291 switch (user_reg_hint_type) { 9292 case NL80211_USER_REG_HINT_USER: 9293 case NL80211_USER_REG_HINT_CELL_BASE: 9294 if (!info->attrs[NL80211_ATTR_REG_ALPHA2]) 9295 return -EINVAL; 9296 9297 data = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]); 9298 return regulatory_hint_user(data, user_reg_hint_type); 9299 case NL80211_USER_REG_HINT_INDOOR: 9300 if (info->attrs[NL80211_ATTR_SOCKET_OWNER]) { 9301 owner_nlportid = info->snd_portid; 9302 is_indoor = !!info->attrs[NL80211_ATTR_REG_INDOOR]; 9303 } else { 9304 owner_nlportid = 0; 9305 is_indoor = true; 9306 } 9307 9308 regulatory_hint_indoor(is_indoor, owner_nlportid); 9309 return 0; 9310 default: 9311 return -EINVAL; 9312 } 9313 } 9314 9315 static int nl80211_reload_regdb(struct sk_buff *skb, struct genl_info *info) 9316 { 9317 return reg_reload_regdb(); 9318 } 9319 9320 static int nl80211_get_mesh_config(struct sk_buff *skb, 9321 struct genl_info *info) 9322 { 9323 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 9324 struct net_device *dev = info->user_ptr[1]; 9325 struct wireless_dev *wdev = dev->ieee80211_ptr; 9326 struct mesh_config cur_params; 9327 int err = 0; 9328 void *hdr; 9329 struct nlattr *pinfoattr; 9330 struct sk_buff *msg; 9331 9332 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) 9333 return -EOPNOTSUPP; 9334 9335 if (!rdev->ops->get_mesh_config) 9336 return -EOPNOTSUPP; 9337 9338 /* If not connected, get default parameters */ 9339 if (!wdev->u.mesh.id_len) 9340 memcpy(&cur_params, &default_mesh_config, sizeof(cur_params)); 9341 else 9342 err = rdev_get_mesh_config(rdev, dev, &cur_params); 9343 9344 if (err) 9345 return err; 9346 9347 /* Draw up a netlink message to send back */ 9348 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 9349 if (!msg) 9350 return -ENOMEM; 9351 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0, 9352 NL80211_CMD_GET_MESH_CONFIG); 9353 if (!hdr) 9354 goto out; 9355 pinfoattr = nla_nest_start_noflag(msg, NL80211_ATTR_MESH_CONFIG); 9356 if (!pinfoattr) 9357 goto nla_put_failure; 9358 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) || 9359 nla_put_u16(msg, NL80211_MESHCONF_RETRY_TIMEOUT, 9360 cur_params.dot11MeshRetryTimeout) || 9361 nla_put_u16(msg, NL80211_MESHCONF_CONFIRM_TIMEOUT, 9362 cur_params.dot11MeshConfirmTimeout) || 9363 nla_put_u16(msg, NL80211_MESHCONF_HOLDING_TIMEOUT, 9364 cur_params.dot11MeshHoldingTimeout) || 9365 nla_put_u16(msg, NL80211_MESHCONF_MAX_PEER_LINKS, 9366 cur_params.dot11MeshMaxPeerLinks) || 9367 nla_put_u8(msg, NL80211_MESHCONF_MAX_RETRIES, 9368 cur_params.dot11MeshMaxRetries) || 9369 nla_put_u8(msg, NL80211_MESHCONF_TTL, 9370 cur_params.dot11MeshTTL) || 9371 nla_put_u8(msg, NL80211_MESHCONF_ELEMENT_TTL, 9372 cur_params.element_ttl) || 9373 nla_put_u8(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS, 9374 cur_params.auto_open_plinks) || 9375 nla_put_u32(msg, NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR, 9376 cur_params.dot11MeshNbrOffsetMaxNeighbor) || 9377 nla_put_u8(msg, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES, 9378 cur_params.dot11MeshHWMPmaxPREQretries) || 9379 nla_put_u32(msg, NL80211_MESHCONF_PATH_REFRESH_TIME, 9380 cur_params.path_refresh_time) || 9381 nla_put_u16(msg, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT, 9382 cur_params.min_discovery_timeout) || 9383 nla_put_u32(msg, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT, 9384 cur_params.dot11MeshHWMPactivePathTimeout) || 9385 nla_put_u16(msg, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL, 9386 cur_params.dot11MeshHWMPpreqMinInterval) || 9387 nla_put_u16(msg, NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL, 9388 cur_params.dot11MeshHWMPperrMinInterval) || 9389 nla_put_u16(msg, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME, 9390 cur_params.dot11MeshHWMPnetDiameterTraversalTime) || 9391 nla_put_u8(msg, NL80211_MESHCONF_HWMP_ROOTMODE, 9392 cur_params.dot11MeshHWMPRootMode) || 9393 nla_put_u16(msg, NL80211_MESHCONF_HWMP_RANN_INTERVAL, 9394 cur_params.dot11MeshHWMPRannInterval) || 9395 nla_put_u8(msg, NL80211_MESHCONF_GATE_ANNOUNCEMENTS, 9396 cur_params.dot11MeshGateAnnouncementProtocol) || 9397 nla_put_u8(msg, NL80211_MESHCONF_FORWARDING, 9398 cur_params.dot11MeshForwarding) || 9399 nla_put_s32(msg, NL80211_MESHCONF_RSSI_THRESHOLD, 9400 cur_params.rssi_threshold) || 9401 nla_put_u32(msg, NL80211_MESHCONF_HT_OPMODE, 9402 cur_params.ht_opmode) || 9403 nla_put_u32(msg, NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT, 9404 cur_params.dot11MeshHWMPactivePathToRootTimeout) || 9405 nla_put_u16(msg, NL80211_MESHCONF_HWMP_ROOT_INTERVAL, 9406 cur_params.dot11MeshHWMProotInterval) || 9407 nla_put_u16(msg, NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL, 9408 cur_params.dot11MeshHWMPconfirmationInterval) || 9409 nla_put_u32(msg, NL80211_MESHCONF_POWER_MODE, 9410 cur_params.power_mode) || 9411 nla_put_u16(msg, NL80211_MESHCONF_AWAKE_WINDOW, 9412 cur_params.dot11MeshAwakeWindowDuration) || 9413 nla_put_u32(msg, NL80211_MESHCONF_PLINK_TIMEOUT, 9414 cur_params.plink_timeout) || 9415 nla_put_u8(msg, NL80211_MESHCONF_CONNECTED_TO_GATE, 9416 cur_params.dot11MeshConnectedToMeshGate) || 9417 nla_put_u8(msg, NL80211_MESHCONF_NOLEARN, 9418 cur_params.dot11MeshNolearn) || 9419 nla_put_u8(msg, NL80211_MESHCONF_CONNECTED_TO_AS, 9420 cur_params.dot11MeshConnectedToAuthServer)) 9421 goto nla_put_failure; 9422 nla_nest_end(msg, pinfoattr); 9423 genlmsg_end(msg, hdr); 9424 return genlmsg_reply(msg, info); 9425 9426 nla_put_failure: 9427 out: 9428 nlmsg_free(msg); 9429 return -ENOBUFS; 9430 } 9431 9432 static const struct nla_policy 9433 nl80211_meshconf_params_policy[NL80211_MESHCONF_ATTR_MAX+1] = { 9434 [NL80211_MESHCONF_RETRY_TIMEOUT] = 9435 NLA_POLICY_RANGE(NLA_U16, 1, 255), 9436 [NL80211_MESHCONF_CONFIRM_TIMEOUT] = 9437 NLA_POLICY_RANGE(NLA_U16, 1, 255), 9438 [NL80211_MESHCONF_HOLDING_TIMEOUT] = 9439 NLA_POLICY_RANGE(NLA_U16, 1, 255), 9440 [NL80211_MESHCONF_MAX_PEER_LINKS] = 9441 NLA_POLICY_RANGE(NLA_U16, 0, 255), 9442 [NL80211_MESHCONF_MAX_RETRIES] = NLA_POLICY_MAX(NLA_U8, 16), 9443 [NL80211_MESHCONF_TTL] = NLA_POLICY_MIN(NLA_U8, 1), 9444 [NL80211_MESHCONF_ELEMENT_TTL] = NLA_POLICY_MIN(NLA_U8, 1), 9445 [NL80211_MESHCONF_AUTO_OPEN_PLINKS] = NLA_POLICY_MAX(NLA_U8, 1), 9446 [NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR] = 9447 NLA_POLICY_RANGE(NLA_U32, 1, 255), 9448 [NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES] = { .type = NLA_U8 }, 9449 [NL80211_MESHCONF_PATH_REFRESH_TIME] = { .type = NLA_U32 }, 9450 [NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT] = NLA_POLICY_MIN(NLA_U16, 1), 9451 [NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT] = { .type = NLA_U32 }, 9452 [NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL] = 9453 NLA_POLICY_MIN(NLA_U16, 1), 9454 [NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL] = 9455 NLA_POLICY_MIN(NLA_U16, 1), 9456 [NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME] = 9457 NLA_POLICY_MIN(NLA_U16, 1), 9458 [NL80211_MESHCONF_HWMP_ROOTMODE] = NLA_POLICY_MAX(NLA_U8, 4), 9459 [NL80211_MESHCONF_HWMP_RANN_INTERVAL] = 9460 NLA_POLICY_MIN(NLA_U16, 1), 9461 [NL80211_MESHCONF_GATE_ANNOUNCEMENTS] = NLA_POLICY_MAX(NLA_U8, 1), 9462 [NL80211_MESHCONF_FORWARDING] = NLA_POLICY_MAX(NLA_U8, 1), 9463 [NL80211_MESHCONF_RSSI_THRESHOLD] = 9464 NLA_POLICY_RANGE(NLA_S32, -255, 0), 9465 [NL80211_MESHCONF_HT_OPMODE] = { .type = NLA_U16 }, 9466 [NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT] = { .type = NLA_U32 }, 9467 [NL80211_MESHCONF_HWMP_ROOT_INTERVAL] = 9468 NLA_POLICY_MIN(NLA_U16, 1), 9469 [NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL] = 9470 NLA_POLICY_MIN(NLA_U16, 1), 9471 [NL80211_MESHCONF_POWER_MODE] = 9472 NLA_POLICY_RANGE(NLA_U32, 9473 NL80211_MESH_POWER_ACTIVE, 9474 NL80211_MESH_POWER_MAX), 9475 [NL80211_MESHCONF_AWAKE_WINDOW] = { .type = NLA_U16 }, 9476 [NL80211_MESHCONF_PLINK_TIMEOUT] = { .type = NLA_U32 }, 9477 [NL80211_MESHCONF_CONNECTED_TO_GATE] = NLA_POLICY_RANGE(NLA_U8, 0, 1), 9478 [NL80211_MESHCONF_NOLEARN] = NLA_POLICY_RANGE(NLA_U8, 0, 1), 9479 [NL80211_MESHCONF_CONNECTED_TO_AS] = NLA_POLICY_RANGE(NLA_U8, 0, 1), 9480 }; 9481 9482 static const struct nla_policy 9483 nl80211_mesh_setup_params_policy[NL80211_MESH_SETUP_ATTR_MAX+1] = { 9484 [NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC] = { .type = NLA_U8 }, 9485 [NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL] = { .type = NLA_U8 }, 9486 [NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC] = { .type = NLA_U8 }, 9487 [NL80211_MESH_SETUP_USERSPACE_AUTH] = { .type = NLA_FLAG }, 9488 [NL80211_MESH_SETUP_AUTH_PROTOCOL] = { .type = NLA_U8 }, 9489 [NL80211_MESH_SETUP_USERSPACE_MPM] = { .type = NLA_FLAG }, 9490 [NL80211_MESH_SETUP_IE] = 9491 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_ie_attr, 9492 IEEE80211_MAX_DATA_LEN), 9493 [NL80211_MESH_SETUP_USERSPACE_AMPE] = { .type = NLA_FLAG }, 9494 }; 9495 9496 static int nl80211_parse_mesh_config(struct genl_info *info, 9497 struct mesh_config *cfg, 9498 u32 *mask_out) 9499 { 9500 struct nlattr *tb[NL80211_MESHCONF_ATTR_MAX + 1]; 9501 u32 mask = 0; 9502 u16 ht_opmode; 9503 9504 #define FILL_IN_MESH_PARAM_IF_SET(tb, cfg, param, mask, attr, fn) \ 9505 do { \ 9506 if (tb[attr]) { \ 9507 cfg->param = fn(tb[attr]); \ 9508 mask |= BIT((attr) - 1); \ 9509 } \ 9510 } while (0) 9511 9512 if (!info->attrs[NL80211_ATTR_MESH_CONFIG]) 9513 return -EINVAL; 9514 if (nla_parse_nested_deprecated(tb, NL80211_MESHCONF_ATTR_MAX, info->attrs[NL80211_ATTR_MESH_CONFIG], nl80211_meshconf_params_policy, info->extack)) 9515 return -EINVAL; 9516 9517 /* This makes sure that there aren't more than 32 mesh config 9518 * parameters (otherwise our bitfield scheme would not work.) */ 9519 BUILD_BUG_ON(NL80211_MESHCONF_ATTR_MAX > 32); 9520 9521 /* Fill in the params struct */ 9522 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshRetryTimeout, mask, 9523 NL80211_MESHCONF_RETRY_TIMEOUT, nla_get_u16); 9524 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConfirmTimeout, mask, 9525 NL80211_MESHCONF_CONFIRM_TIMEOUT, 9526 nla_get_u16); 9527 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHoldingTimeout, mask, 9528 NL80211_MESHCONF_HOLDING_TIMEOUT, 9529 nla_get_u16); 9530 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxPeerLinks, mask, 9531 NL80211_MESHCONF_MAX_PEER_LINKS, 9532 nla_get_u16); 9533 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxRetries, mask, 9534 NL80211_MESHCONF_MAX_RETRIES, nla_get_u8); 9535 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshTTL, mask, 9536 NL80211_MESHCONF_TTL, nla_get_u8); 9537 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, element_ttl, mask, 9538 NL80211_MESHCONF_ELEMENT_TTL, nla_get_u8); 9539 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, auto_open_plinks, mask, 9540 NL80211_MESHCONF_AUTO_OPEN_PLINKS, 9541 nla_get_u8); 9542 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshNbrOffsetMaxNeighbor, 9543 mask, 9544 NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR, 9545 nla_get_u32); 9546 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPmaxPREQretries, mask, 9547 NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES, 9548 nla_get_u8); 9549 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, path_refresh_time, mask, 9550 NL80211_MESHCONF_PATH_REFRESH_TIME, 9551 nla_get_u32); 9552 if (mask & BIT(NL80211_MESHCONF_PATH_REFRESH_TIME) && 9553 (cfg->path_refresh_time < 1 || cfg->path_refresh_time > 65535)) 9554 return -EINVAL; 9555 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, min_discovery_timeout, mask, 9556 NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT, 9557 nla_get_u16); 9558 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathTimeout, 9559 mask, 9560 NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT, 9561 nla_get_u32); 9562 if (mask & BIT(NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT) && 9563 (cfg->dot11MeshHWMPactivePathTimeout < 1 || 9564 cfg->dot11MeshHWMPactivePathTimeout > 65535)) 9565 return -EINVAL; 9566 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPpreqMinInterval, mask, 9567 NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL, 9568 nla_get_u16); 9569 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPperrMinInterval, mask, 9570 NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL, 9571 nla_get_u16); 9572 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, 9573 dot11MeshHWMPnetDiameterTraversalTime, mask, 9574 NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME, 9575 nla_get_u16); 9576 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRootMode, mask, 9577 NL80211_MESHCONF_HWMP_ROOTMODE, nla_get_u8); 9578 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRannInterval, mask, 9579 NL80211_MESHCONF_HWMP_RANN_INTERVAL, 9580 nla_get_u16); 9581 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshGateAnnouncementProtocol, 9582 mask, NL80211_MESHCONF_GATE_ANNOUNCEMENTS, 9583 nla_get_u8); 9584 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshForwarding, mask, 9585 NL80211_MESHCONF_FORWARDING, nla_get_u8); 9586 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, rssi_threshold, mask, 9587 NL80211_MESHCONF_RSSI_THRESHOLD, 9588 nla_get_s32); 9589 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConnectedToMeshGate, mask, 9590 NL80211_MESHCONF_CONNECTED_TO_GATE, 9591 nla_get_u8); 9592 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConnectedToAuthServer, mask, 9593 NL80211_MESHCONF_CONNECTED_TO_AS, 9594 nla_get_u8); 9595 /* 9596 * Check HT operation mode based on 9597 * IEEE 802.11-2016 9.4.2.57 HT Operation element. 9598 */ 9599 if (tb[NL80211_MESHCONF_HT_OPMODE]) { 9600 ht_opmode = nla_get_u16(tb[NL80211_MESHCONF_HT_OPMODE]); 9601 9602 if (ht_opmode & ~(IEEE80211_HT_OP_MODE_PROTECTION | 9603 IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT | 9604 IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT)) 9605 return -EINVAL; 9606 9607 /* NON_HT_STA bit is reserved, but some programs set it */ 9608 ht_opmode &= ~IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT; 9609 9610 cfg->ht_opmode = ht_opmode; 9611 mask |= (1 << (NL80211_MESHCONF_HT_OPMODE - 1)); 9612 } 9613 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, 9614 dot11MeshHWMPactivePathToRootTimeout, mask, 9615 NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT, 9616 nla_get_u32); 9617 if (mask & BIT(NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT) && 9618 (cfg->dot11MeshHWMPactivePathToRootTimeout < 1 || 9619 cfg->dot11MeshHWMPactivePathToRootTimeout > 65535)) 9620 return -EINVAL; 9621 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMProotInterval, mask, 9622 NL80211_MESHCONF_HWMP_ROOT_INTERVAL, 9623 nla_get_u16); 9624 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPconfirmationInterval, 9625 mask, 9626 NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL, 9627 nla_get_u16); 9628 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, power_mode, mask, 9629 NL80211_MESHCONF_POWER_MODE, nla_get_u32); 9630 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshAwakeWindowDuration, mask, 9631 NL80211_MESHCONF_AWAKE_WINDOW, nla_get_u16); 9632 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, plink_timeout, mask, 9633 NL80211_MESHCONF_PLINK_TIMEOUT, nla_get_u32); 9634 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshNolearn, mask, 9635 NL80211_MESHCONF_NOLEARN, nla_get_u8); 9636 if (mask_out) 9637 *mask_out = mask; 9638 9639 return 0; 9640 9641 #undef FILL_IN_MESH_PARAM_IF_SET 9642 } 9643 9644 static int nl80211_parse_mesh_setup(struct genl_info *info, 9645 struct mesh_setup *setup) 9646 { 9647 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 9648 struct nlattr *tb[NL80211_MESH_SETUP_ATTR_MAX + 1]; 9649 9650 if (!info->attrs[NL80211_ATTR_MESH_SETUP]) 9651 return -EINVAL; 9652 if (nla_parse_nested_deprecated(tb, NL80211_MESH_SETUP_ATTR_MAX, info->attrs[NL80211_ATTR_MESH_SETUP], nl80211_mesh_setup_params_policy, info->extack)) 9653 return -EINVAL; 9654 9655 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC]) 9656 setup->sync_method = 9657 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])) ? 9658 IEEE80211_SYNC_METHOD_VENDOR : 9659 IEEE80211_SYNC_METHOD_NEIGHBOR_OFFSET; 9660 9661 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL]) 9662 setup->path_sel_proto = 9663 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])) ? 9664 IEEE80211_PATH_PROTOCOL_VENDOR : 9665 IEEE80211_PATH_PROTOCOL_HWMP; 9666 9667 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC]) 9668 setup->path_metric = 9669 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])) ? 9670 IEEE80211_PATH_METRIC_VENDOR : 9671 IEEE80211_PATH_METRIC_AIRTIME; 9672 9673 if (tb[NL80211_MESH_SETUP_IE]) { 9674 struct nlattr *ieattr = 9675 tb[NL80211_MESH_SETUP_IE]; 9676 setup->ie = nla_data(ieattr); 9677 setup->ie_len = nla_len(ieattr); 9678 } 9679 if (tb[NL80211_MESH_SETUP_USERSPACE_MPM] && 9680 !(rdev->wiphy.features & NL80211_FEATURE_USERSPACE_MPM)) 9681 return -EINVAL; 9682 setup->user_mpm = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_MPM]); 9683 setup->is_authenticated = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AUTH]); 9684 setup->is_secure = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AMPE]); 9685 if (setup->is_secure) 9686 setup->user_mpm = true; 9687 9688 if (tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]) { 9689 if (!setup->user_mpm) 9690 return -EINVAL; 9691 setup->auth_id = 9692 nla_get_u8(tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]); 9693 } 9694 9695 return 0; 9696 } 9697 9698 static int nl80211_update_mesh_config(struct sk_buff *skb, 9699 struct genl_info *info) 9700 { 9701 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 9702 struct net_device *dev = info->user_ptr[1]; 9703 struct wireless_dev *wdev = dev->ieee80211_ptr; 9704 struct mesh_config cfg = {}; 9705 u32 mask; 9706 int err; 9707 9708 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) 9709 return -EOPNOTSUPP; 9710 9711 if (!rdev->ops->update_mesh_config) 9712 return -EOPNOTSUPP; 9713 9714 err = nl80211_parse_mesh_config(info, &cfg, &mask); 9715 if (err) 9716 return err; 9717 9718 if (!wdev->u.mesh.id_len) 9719 err = -ENOLINK; 9720 9721 if (!err) 9722 err = rdev_update_mesh_config(rdev, dev, mask, &cfg); 9723 9724 return err; 9725 } 9726 9727 static int nl80211_put_regdom(const struct ieee80211_regdomain *regdom, 9728 struct sk_buff *msg) 9729 { 9730 struct nlattr *nl_reg_rules; 9731 unsigned int i; 9732 9733 if (nla_put_string(msg, NL80211_ATTR_REG_ALPHA2, regdom->alpha2) || 9734 (regdom->dfs_region && 9735 nla_put_u8(msg, NL80211_ATTR_DFS_REGION, regdom->dfs_region))) 9736 goto nla_put_failure; 9737 9738 nl_reg_rules = nla_nest_start_noflag(msg, NL80211_ATTR_REG_RULES); 9739 if (!nl_reg_rules) 9740 goto nla_put_failure; 9741 9742 for (i = 0; i < regdom->n_reg_rules; i++) { 9743 struct nlattr *nl_reg_rule; 9744 const struct ieee80211_reg_rule *reg_rule; 9745 const struct ieee80211_freq_range *freq_range; 9746 const struct ieee80211_power_rule *power_rule; 9747 unsigned int max_bandwidth_khz; 9748 9749 reg_rule = ®dom->reg_rules[i]; 9750 freq_range = ®_rule->freq_range; 9751 power_rule = ®_rule->power_rule; 9752 9753 nl_reg_rule = nla_nest_start_noflag(msg, i); 9754 if (!nl_reg_rule) 9755 goto nla_put_failure; 9756 9757 max_bandwidth_khz = freq_range->max_bandwidth_khz; 9758 if (!max_bandwidth_khz) 9759 max_bandwidth_khz = reg_get_max_bandwidth(regdom, 9760 reg_rule); 9761 9762 if (nla_put_u32(msg, NL80211_ATTR_REG_RULE_FLAGS, 9763 reg_rule->flags) || 9764 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_START, 9765 freq_range->start_freq_khz) || 9766 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_END, 9767 freq_range->end_freq_khz) || 9768 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_MAX_BW, 9769 max_bandwidth_khz) || 9770 nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN, 9771 power_rule->max_antenna_gain) || 9772 nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_EIRP, 9773 power_rule->max_eirp) || 9774 nla_put_u32(msg, NL80211_ATTR_DFS_CAC_TIME, 9775 reg_rule->dfs_cac_ms)) 9776 goto nla_put_failure; 9777 9778 if ((reg_rule->flags & NL80211_RRF_PSD) && 9779 nla_put_s8(msg, NL80211_ATTR_POWER_RULE_PSD, 9780 reg_rule->psd)) 9781 goto nla_put_failure; 9782 9783 nla_nest_end(msg, nl_reg_rule); 9784 } 9785 9786 nla_nest_end(msg, nl_reg_rules); 9787 return 0; 9788 9789 nla_put_failure: 9790 return -EMSGSIZE; 9791 } 9792 9793 static int nl80211_get_reg_do(struct sk_buff *skb, struct genl_info *info) 9794 { 9795 const struct ieee80211_regdomain *regdom = NULL; 9796 struct cfg80211_registered_device *rdev; 9797 struct wiphy *wiphy = NULL; 9798 struct sk_buff *msg; 9799 int err = -EMSGSIZE; 9800 void *hdr; 9801 9802 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 9803 if (!msg) 9804 return -ENOBUFS; 9805 9806 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0, 9807 NL80211_CMD_GET_REG); 9808 if (!hdr) 9809 goto put_failure; 9810 9811 rtnl_lock(); 9812 9813 if (info->attrs[NL80211_ATTR_WIPHY]) { 9814 bool self_managed; 9815 9816 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info); 9817 if (IS_ERR(rdev)) { 9818 err = PTR_ERR(rdev); 9819 goto nla_put_failure; 9820 } 9821 9822 wiphy = &rdev->wiphy; 9823 self_managed = wiphy->regulatory_flags & 9824 REGULATORY_WIPHY_SELF_MANAGED; 9825 9826 rcu_read_lock(); 9827 9828 regdom = get_wiphy_regdom(wiphy); 9829 9830 /* a self-managed-reg device must have a private regdom */ 9831 if (WARN_ON(!regdom && self_managed)) { 9832 err = -EINVAL; 9833 goto nla_put_failure_rcu; 9834 } 9835 9836 if (regdom && 9837 nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy))) 9838 goto nla_put_failure_rcu; 9839 } else { 9840 rcu_read_lock(); 9841 } 9842 9843 if (!wiphy && reg_last_request_cell_base() && 9844 nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE, 9845 NL80211_USER_REG_HINT_CELL_BASE)) 9846 goto nla_put_failure_rcu; 9847 9848 if (!regdom) 9849 regdom = rcu_dereference(cfg80211_regdomain); 9850 9851 if (nl80211_put_regdom(regdom, msg)) 9852 goto nla_put_failure_rcu; 9853 9854 rcu_read_unlock(); 9855 9856 genlmsg_end(msg, hdr); 9857 rtnl_unlock(); 9858 return genlmsg_reply(msg, info); 9859 9860 nla_put_failure_rcu: 9861 rcu_read_unlock(); 9862 nla_put_failure: 9863 rtnl_unlock(); 9864 put_failure: 9865 nlmsg_free(msg); 9866 return err; 9867 } 9868 9869 static int nl80211_send_regdom(struct sk_buff *msg, struct netlink_callback *cb, 9870 u32 seq, int flags, struct wiphy *wiphy, 9871 const struct ieee80211_regdomain *regdom) 9872 { 9873 void *hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags, 9874 NL80211_CMD_GET_REG); 9875 9876 if (!hdr) 9877 return -1; 9878 9879 genl_dump_check_consistent(cb, hdr); 9880 9881 if (nl80211_put_regdom(regdom, msg)) 9882 goto nla_put_failure; 9883 9884 if (!wiphy && reg_last_request_cell_base() && 9885 nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE, 9886 NL80211_USER_REG_HINT_CELL_BASE)) 9887 goto nla_put_failure; 9888 9889 if (wiphy && 9890 nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy))) 9891 goto nla_put_failure; 9892 9893 if (wiphy && wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED && 9894 nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG)) 9895 goto nla_put_failure; 9896 9897 genlmsg_end(msg, hdr); 9898 return 0; 9899 9900 nla_put_failure: 9901 genlmsg_cancel(msg, hdr); 9902 return -EMSGSIZE; 9903 } 9904 9905 static int nl80211_get_reg_dump(struct sk_buff *skb, 9906 struct netlink_callback *cb) 9907 { 9908 const struct ieee80211_regdomain *regdom = NULL; 9909 struct cfg80211_registered_device *rdev; 9910 int err, reg_idx, start = cb->args[2]; 9911 9912 rcu_read_lock(); 9913 9914 if (cfg80211_regdomain && start == 0) { 9915 err = nl80211_send_regdom(skb, cb, cb->nlh->nlmsg_seq, 9916 NLM_F_MULTI, NULL, 9917 rcu_dereference(cfg80211_regdomain)); 9918 if (err < 0) 9919 goto out_err; 9920 } 9921 9922 /* the global regdom is idx 0 */ 9923 reg_idx = 1; 9924 list_for_each_entry_rcu(rdev, &cfg80211_rdev_list, list) { 9925 regdom = get_wiphy_regdom(&rdev->wiphy); 9926 if (!regdom) 9927 continue; 9928 9929 if (++reg_idx <= start) 9930 continue; 9931 9932 err = nl80211_send_regdom(skb, cb, cb->nlh->nlmsg_seq, 9933 NLM_F_MULTI, &rdev->wiphy, regdom); 9934 if (err < 0) { 9935 reg_idx--; 9936 break; 9937 } 9938 } 9939 9940 cb->args[2] = reg_idx; 9941 err = skb->len; 9942 out_err: 9943 rcu_read_unlock(); 9944 return err; 9945 } 9946 9947 #ifdef CONFIG_CFG80211_CRDA_SUPPORT 9948 static const struct nla_policy reg_rule_policy[NL80211_REG_RULE_ATTR_MAX + 1] = { 9949 [NL80211_ATTR_REG_RULE_FLAGS] = { .type = NLA_U32 }, 9950 [NL80211_ATTR_FREQ_RANGE_START] = { .type = NLA_U32 }, 9951 [NL80211_ATTR_FREQ_RANGE_END] = { .type = NLA_U32 }, 9952 [NL80211_ATTR_FREQ_RANGE_MAX_BW] = { .type = NLA_U32 }, 9953 [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN] = { .type = NLA_U32 }, 9954 [NL80211_ATTR_POWER_RULE_MAX_EIRP] = { .type = NLA_U32 }, 9955 [NL80211_ATTR_DFS_CAC_TIME] = { .type = NLA_U32 }, 9956 }; 9957 9958 static int parse_reg_rule(struct nlattr *tb[], 9959 struct ieee80211_reg_rule *reg_rule) 9960 { 9961 struct ieee80211_freq_range *freq_range = ®_rule->freq_range; 9962 struct ieee80211_power_rule *power_rule = ®_rule->power_rule; 9963 9964 if (!tb[NL80211_ATTR_REG_RULE_FLAGS]) 9965 return -EINVAL; 9966 if (!tb[NL80211_ATTR_FREQ_RANGE_START]) 9967 return -EINVAL; 9968 if (!tb[NL80211_ATTR_FREQ_RANGE_END]) 9969 return -EINVAL; 9970 if (!tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]) 9971 return -EINVAL; 9972 if (!tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]) 9973 return -EINVAL; 9974 9975 reg_rule->flags = nla_get_u32(tb[NL80211_ATTR_REG_RULE_FLAGS]); 9976 9977 freq_range->start_freq_khz = 9978 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]); 9979 freq_range->end_freq_khz = 9980 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]); 9981 freq_range->max_bandwidth_khz = 9982 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]); 9983 9984 power_rule->max_eirp = 9985 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]); 9986 9987 if (tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]) 9988 power_rule->max_antenna_gain = 9989 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]); 9990 9991 if (tb[NL80211_ATTR_DFS_CAC_TIME]) 9992 reg_rule->dfs_cac_ms = 9993 nla_get_u32(tb[NL80211_ATTR_DFS_CAC_TIME]); 9994 9995 return 0; 9996 } 9997 9998 static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info) 9999 { 10000 struct nlattr *tb[NL80211_REG_RULE_ATTR_MAX + 1]; 10001 struct nlattr *nl_reg_rule; 10002 char *alpha2; 10003 int rem_reg_rules, r; 10004 u32 num_rules = 0, rule_idx = 0; 10005 enum nl80211_dfs_regions dfs_region = NL80211_DFS_UNSET; 10006 struct ieee80211_regdomain *rd; 10007 10008 if (!info->attrs[NL80211_ATTR_REG_ALPHA2]) 10009 return -EINVAL; 10010 10011 if (!info->attrs[NL80211_ATTR_REG_RULES]) 10012 return -EINVAL; 10013 10014 alpha2 = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]); 10015 10016 if (info->attrs[NL80211_ATTR_DFS_REGION]) 10017 dfs_region = nla_get_u8(info->attrs[NL80211_ATTR_DFS_REGION]); 10018 10019 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES], 10020 rem_reg_rules) { 10021 num_rules++; 10022 if (num_rules > NL80211_MAX_SUPP_REG_RULES) 10023 return -EINVAL; 10024 } 10025 10026 rtnl_lock(); 10027 if (!reg_is_valid_request(alpha2)) { 10028 r = -EINVAL; 10029 goto out; 10030 } 10031 10032 rd = kzalloc(struct_size(rd, reg_rules, num_rules), GFP_KERNEL); 10033 if (!rd) { 10034 r = -ENOMEM; 10035 goto out; 10036 } 10037 10038 rd->n_reg_rules = num_rules; 10039 rd->alpha2[0] = alpha2[0]; 10040 rd->alpha2[1] = alpha2[1]; 10041 10042 /* 10043 * Disable DFS master mode if the DFS region was 10044 * not supported or known on this kernel. 10045 */ 10046 if (reg_supported_dfs_region(dfs_region)) 10047 rd->dfs_region = dfs_region; 10048 10049 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES], 10050 rem_reg_rules) { 10051 r = nla_parse_nested_deprecated(tb, NL80211_REG_RULE_ATTR_MAX, 10052 nl_reg_rule, reg_rule_policy, 10053 info->extack); 10054 if (r) 10055 goto bad_reg; 10056 r = parse_reg_rule(tb, &rd->reg_rules[rule_idx]); 10057 if (r) 10058 goto bad_reg; 10059 10060 rule_idx++; 10061 10062 if (rule_idx > NL80211_MAX_SUPP_REG_RULES) { 10063 r = -EINVAL; 10064 goto bad_reg; 10065 } 10066 } 10067 10068 r = set_regdom(rd, REGD_SOURCE_CRDA); 10069 /* set_regdom takes ownership of rd */ 10070 rd = NULL; 10071 bad_reg: 10072 kfree(rd); 10073 out: 10074 rtnl_unlock(); 10075 return r; 10076 } 10077 #endif /* CONFIG_CFG80211_CRDA_SUPPORT */ 10078 10079 static int validate_scan_freqs(struct nlattr *freqs) 10080 { 10081 struct nlattr *attr1, *attr2; 10082 int n_channels = 0, tmp1, tmp2; 10083 10084 nla_for_each_nested(attr1, freqs, tmp1) 10085 if (nla_len(attr1) != sizeof(u32)) 10086 return 0; 10087 10088 nla_for_each_nested(attr1, freqs, tmp1) { 10089 n_channels++; 10090 /* 10091 * Some hardware has a limited channel list for 10092 * scanning, and it is pretty much nonsensical 10093 * to scan for a channel twice, so disallow that 10094 * and don't require drivers to check that the 10095 * channel list they get isn't longer than what 10096 * they can scan, as long as they can scan all 10097 * the channels they registered at once. 10098 */ 10099 nla_for_each_nested(attr2, freqs, tmp2) 10100 if (attr1 != attr2 && 10101 nla_get_u32(attr1) == nla_get_u32(attr2)) 10102 return 0; 10103 } 10104 10105 return n_channels; 10106 } 10107 10108 static bool is_band_valid(struct wiphy *wiphy, enum nl80211_band b) 10109 { 10110 return b < NUM_NL80211_BANDS && wiphy->bands[b]; 10111 } 10112 10113 static int parse_bss_select(struct nlattr *nla, struct wiphy *wiphy, 10114 struct cfg80211_bss_selection *bss_select) 10115 { 10116 struct nlattr *attr[NL80211_BSS_SELECT_ATTR_MAX + 1]; 10117 struct nlattr *nest; 10118 int err; 10119 bool found = false; 10120 int i; 10121 10122 /* only process one nested attribute */ 10123 nest = nla_data(nla); 10124 if (!nla_ok(nest, nla_len(nest))) 10125 return -EINVAL; 10126 10127 err = nla_parse_nested_deprecated(attr, NL80211_BSS_SELECT_ATTR_MAX, 10128 nest, nl80211_bss_select_policy, 10129 NULL); 10130 if (err) 10131 return err; 10132 10133 /* only one attribute may be given */ 10134 for (i = 0; i <= NL80211_BSS_SELECT_ATTR_MAX; i++) { 10135 if (attr[i]) { 10136 if (found) 10137 return -EINVAL; 10138 found = true; 10139 } 10140 } 10141 10142 bss_select->behaviour = __NL80211_BSS_SELECT_ATTR_INVALID; 10143 10144 if (attr[NL80211_BSS_SELECT_ATTR_RSSI]) 10145 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_RSSI; 10146 10147 if (attr[NL80211_BSS_SELECT_ATTR_BAND_PREF]) { 10148 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_BAND_PREF; 10149 bss_select->param.band_pref = 10150 nla_get_u32(attr[NL80211_BSS_SELECT_ATTR_BAND_PREF]); 10151 if (!is_band_valid(wiphy, bss_select->param.band_pref)) 10152 return -EINVAL; 10153 } 10154 10155 if (attr[NL80211_BSS_SELECT_ATTR_RSSI_ADJUST]) { 10156 struct nl80211_bss_select_rssi_adjust *adj_param; 10157 10158 adj_param = nla_data(attr[NL80211_BSS_SELECT_ATTR_RSSI_ADJUST]); 10159 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_RSSI_ADJUST; 10160 bss_select->param.adjust.band = adj_param->band; 10161 bss_select->param.adjust.delta = adj_param->delta; 10162 if (!is_band_valid(wiphy, bss_select->param.adjust.band)) 10163 return -EINVAL; 10164 } 10165 10166 /* user-space did not provide behaviour attribute */ 10167 if (bss_select->behaviour == __NL80211_BSS_SELECT_ATTR_INVALID) 10168 return -EINVAL; 10169 10170 if (!(wiphy->bss_select_support & BIT(bss_select->behaviour))) 10171 return -EINVAL; 10172 10173 return 0; 10174 } 10175 10176 int nl80211_parse_random_mac(struct nlattr **attrs, 10177 u8 *mac_addr, u8 *mac_addr_mask) 10178 { 10179 int i; 10180 10181 if (!attrs[NL80211_ATTR_MAC] && !attrs[NL80211_ATTR_MAC_MASK]) { 10182 eth_zero_addr(mac_addr); 10183 eth_zero_addr(mac_addr_mask); 10184 mac_addr[0] = 0x2; 10185 mac_addr_mask[0] = 0x3; 10186 10187 return 0; 10188 } 10189 10190 /* need both or none */ 10191 if (!attrs[NL80211_ATTR_MAC] || !attrs[NL80211_ATTR_MAC_MASK]) 10192 return -EINVAL; 10193 10194 memcpy(mac_addr, nla_data(attrs[NL80211_ATTR_MAC]), ETH_ALEN); 10195 memcpy(mac_addr_mask, nla_data(attrs[NL80211_ATTR_MAC_MASK]), ETH_ALEN); 10196 10197 /* don't allow or configure an mcast address */ 10198 if (!is_multicast_ether_addr(mac_addr_mask) || 10199 is_multicast_ether_addr(mac_addr)) 10200 return -EINVAL; 10201 10202 /* 10203 * allow users to pass a MAC address that has bits set outside 10204 * of the mask, but don't bother drivers with having to deal 10205 * with such bits 10206 */ 10207 for (i = 0; i < ETH_ALEN; i++) 10208 mac_addr[i] &= mac_addr_mask[i]; 10209 10210 return 0; 10211 } 10212 10213 static bool cfg80211_off_channel_oper_allowed(struct wireless_dev *wdev, 10214 struct ieee80211_channel *chan) 10215 { 10216 unsigned int link_id; 10217 bool all_ok = true; 10218 int radio_idx; 10219 10220 lockdep_assert_wiphy(wdev->wiphy); 10221 10222 if (!cfg80211_wdev_channel_allowed(wdev, chan)) 10223 return false; 10224 10225 if (!cfg80211_beaconing_iface_active(wdev)) 10226 return true; 10227 10228 radio_idx = cfg80211_get_radio_idx_by_chan(wdev->wiphy, chan); 10229 10230 /* 10231 * FIXME: check if we have a free radio/link for chan 10232 * 10233 * This, as well as the FIXME below, requires knowing the link 10234 * capabilities of the hardware. 10235 */ 10236 10237 /* we cannot leave radar channels */ 10238 for_each_valid_link(wdev, link_id) { 10239 struct cfg80211_chan_def *chandef; 10240 int link_radio_idx; 10241 10242 chandef = wdev_chandef(wdev, link_id); 10243 if (!chandef || !chandef->chan) 10244 continue; 10245 10246 if (!(chandef->chan->flags & IEEE80211_CHAN_RADAR)) 10247 continue; 10248 10249 /* 10250 * chandef->chan is a radar channel. If the radio/link onto 10251 * which this radar channel falls is the same radio/link onto 10252 * which the input 'chan' falls, off-channel operation should 10253 * not be allowed. Hence, set 'all_ok' to false. 10254 */ 10255 10256 link_radio_idx = cfg80211_get_radio_idx_by_chan(wdev->wiphy, 10257 chandef->chan); 10258 if (link_radio_idx == radio_idx) { 10259 all_ok = false; 10260 break; 10261 } 10262 } 10263 10264 if (all_ok) 10265 return true; 10266 10267 return regulatory_pre_cac_allowed(wdev->wiphy); 10268 } 10269 10270 static bool nl80211_check_scan_feat(struct wiphy *wiphy, u32 flags, u32 flag, 10271 enum nl80211_ext_feature_index feat) 10272 { 10273 if (!(flags & flag)) 10274 return true; 10275 if (wiphy_ext_feature_isset(wiphy, feat)) 10276 return true; 10277 return false; 10278 } 10279 10280 static int 10281 nl80211_check_scan_flags(struct wiphy *wiphy, struct wireless_dev *wdev, 10282 struct nlattr **attrs, u8 *mac_addr, u8 *mac_addr_mask, 10283 u32 *flags, enum nl80211_feature_flags randomness_flag) 10284 { 10285 if (!attrs[NL80211_ATTR_SCAN_FLAGS]) 10286 return 0; 10287 10288 *flags = nla_get_u32(attrs[NL80211_ATTR_SCAN_FLAGS]); 10289 10290 if (((*flags & NL80211_SCAN_FLAG_LOW_PRIORITY) && 10291 !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) || 10292 !nl80211_check_scan_feat(wiphy, *flags, 10293 NL80211_SCAN_FLAG_LOW_SPAN, 10294 NL80211_EXT_FEATURE_LOW_SPAN_SCAN) || 10295 !nl80211_check_scan_feat(wiphy, *flags, 10296 NL80211_SCAN_FLAG_LOW_POWER, 10297 NL80211_EXT_FEATURE_LOW_POWER_SCAN) || 10298 !nl80211_check_scan_feat(wiphy, *flags, 10299 NL80211_SCAN_FLAG_HIGH_ACCURACY, 10300 NL80211_EXT_FEATURE_HIGH_ACCURACY_SCAN) || 10301 !nl80211_check_scan_feat(wiphy, *flags, 10302 NL80211_SCAN_FLAG_FILS_MAX_CHANNEL_TIME, 10303 NL80211_EXT_FEATURE_FILS_MAX_CHANNEL_TIME) || 10304 !nl80211_check_scan_feat(wiphy, *flags, 10305 NL80211_SCAN_FLAG_ACCEPT_BCAST_PROBE_RESP, 10306 NL80211_EXT_FEATURE_ACCEPT_BCAST_PROBE_RESP) || 10307 !nl80211_check_scan_feat(wiphy, *flags, 10308 NL80211_SCAN_FLAG_OCE_PROBE_REQ_DEFERRAL_SUPPRESSION, 10309 NL80211_EXT_FEATURE_OCE_PROBE_REQ_DEFERRAL_SUPPRESSION) || 10310 !nl80211_check_scan_feat(wiphy, *flags, 10311 NL80211_SCAN_FLAG_OCE_PROBE_REQ_HIGH_TX_RATE, 10312 NL80211_EXT_FEATURE_OCE_PROBE_REQ_HIGH_TX_RATE) || 10313 !nl80211_check_scan_feat(wiphy, *flags, 10314 NL80211_SCAN_FLAG_RANDOM_SN, 10315 NL80211_EXT_FEATURE_SCAN_RANDOM_SN) || 10316 !nl80211_check_scan_feat(wiphy, *flags, 10317 NL80211_SCAN_FLAG_MIN_PREQ_CONTENT, 10318 NL80211_EXT_FEATURE_SCAN_MIN_PREQ_CONTENT)) 10319 return -EOPNOTSUPP; 10320 10321 if (*flags & NL80211_SCAN_FLAG_RANDOM_ADDR) { 10322 int err; 10323 10324 if (!(wiphy->features & randomness_flag) || 10325 (wdev && wdev->connected)) 10326 return -EOPNOTSUPP; 10327 10328 err = nl80211_parse_random_mac(attrs, mac_addr, mac_addr_mask); 10329 if (err) 10330 return err; 10331 } 10332 10333 return 0; 10334 } 10335 10336 static int 10337 nl80211_check_scan_flags_sched(struct wiphy *wiphy, struct wireless_dev *wdev, 10338 struct nlattr **attrs, 10339 struct cfg80211_sched_scan_request *req) 10340 { 10341 return nl80211_check_scan_flags(wiphy, wdev, attrs, 10342 req->mac_addr, req->mac_addr_mask, 10343 &req->flags, 10344 wdev ? NL80211_FEATURE_SCHED_SCAN_RANDOM_MAC_ADDR : 10345 NL80211_FEATURE_ND_RANDOM_MAC_ADDR); 10346 } 10347 10348 static int 10349 nl80211_check_scan_flags_reg(struct wiphy *wiphy, struct wireless_dev *wdev, 10350 struct nlattr **attrs, 10351 struct cfg80211_scan_request_int *req) 10352 { 10353 return nl80211_check_scan_flags(wiphy, wdev, attrs, 10354 req->req.mac_addr, 10355 req->req.mac_addr_mask, 10356 &req->req.flags, 10357 NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR); 10358 } 10359 10360 static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info) 10361 { 10362 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 10363 struct wireless_dev *wdev = info->user_ptr[1]; 10364 struct cfg80211_scan_request_int *request; 10365 struct nlattr *scan_freqs = NULL; 10366 bool scan_freqs_khz = false; 10367 struct nlattr *attr; 10368 struct wiphy *wiphy; 10369 int err, tmp, n_ssids = 0, n_channels, i; 10370 size_t ie_len, size; 10371 size_t ssids_offset, ie_offset; 10372 10373 wiphy = &rdev->wiphy; 10374 10375 if (wdev->iftype == NL80211_IFTYPE_NAN) 10376 return -EOPNOTSUPP; 10377 10378 if (!rdev->ops->scan) 10379 return -EOPNOTSUPP; 10380 10381 if (rdev->scan_req || rdev->scan_msg) 10382 return -EBUSY; 10383 10384 if (info->attrs[NL80211_ATTR_SCAN_FREQ_KHZ]) { 10385 if (!wiphy_ext_feature_isset(wiphy, 10386 NL80211_EXT_FEATURE_SCAN_FREQ_KHZ)) 10387 return -EOPNOTSUPP; 10388 scan_freqs = info->attrs[NL80211_ATTR_SCAN_FREQ_KHZ]; 10389 scan_freqs_khz = true; 10390 } else if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) 10391 scan_freqs = info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]; 10392 10393 if (scan_freqs) { 10394 n_channels = validate_scan_freqs(scan_freqs); 10395 if (!n_channels) 10396 return -EINVAL; 10397 } else { 10398 n_channels = ieee80211_get_num_supported_channels(wiphy); 10399 } 10400 10401 if (info->attrs[NL80211_ATTR_SCAN_SSIDS]) 10402 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) 10403 n_ssids++; 10404 10405 if (n_ssids > wiphy->max_scan_ssids) 10406 return -EINVAL; 10407 10408 if (info->attrs[NL80211_ATTR_IE]) 10409 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); 10410 else 10411 ie_len = 0; 10412 10413 if (ie_len > wiphy->max_scan_ie_len) 10414 return -EINVAL; 10415 10416 size = struct_size(request, req.channels, n_channels); 10417 ssids_offset = size; 10418 size = size_add(size, array_size(sizeof(*request->req.ssids), n_ssids)); 10419 ie_offset = size; 10420 size = size_add(size, ie_len); 10421 request = kzalloc(size, GFP_KERNEL); 10422 if (!request) 10423 return -ENOMEM; 10424 10425 if (n_ssids) 10426 request->req.ssids = (void *)request + ssids_offset; 10427 request->req.n_ssids = n_ssids; 10428 if (ie_len) 10429 request->req.ie = (void *)request + ie_offset; 10430 10431 i = 0; 10432 if (scan_freqs) { 10433 /* user specified, bail out if channel not found */ 10434 nla_for_each_nested(attr, scan_freqs, tmp) { 10435 struct ieee80211_channel *chan; 10436 int freq = nla_get_u32(attr); 10437 10438 if (!scan_freqs_khz) 10439 freq = MHZ_TO_KHZ(freq); 10440 10441 chan = ieee80211_get_channel_khz(wiphy, freq); 10442 if (!chan) { 10443 err = -EINVAL; 10444 goto out_free; 10445 } 10446 10447 /* Ignore disabled / no primary channels */ 10448 if (chan->flags & IEEE80211_CHAN_DISABLED || 10449 chan->flags & IEEE80211_CHAN_S1G_NO_PRIMARY || 10450 !cfg80211_wdev_channel_allowed(wdev, chan)) 10451 continue; 10452 10453 request->req.channels[i] = chan; 10454 i++; 10455 } 10456 } else { 10457 enum nl80211_band band; 10458 10459 /* all channels */ 10460 for (band = 0; band < NUM_NL80211_BANDS; band++) { 10461 int j; 10462 10463 if (!wiphy->bands[band]) 10464 continue; 10465 for (j = 0; j < wiphy->bands[band]->n_channels; j++) { 10466 struct ieee80211_channel *chan; 10467 10468 chan = &wiphy->bands[band]->channels[j]; 10469 10470 if (chan->flags & IEEE80211_CHAN_DISABLED || 10471 chan->flags & 10472 IEEE80211_CHAN_S1G_NO_PRIMARY || 10473 !cfg80211_wdev_channel_allowed(wdev, chan)) 10474 continue; 10475 10476 request->req.channels[i] = chan; 10477 i++; 10478 } 10479 } 10480 } 10481 10482 if (!i) { 10483 err = -EINVAL; 10484 goto out_free; 10485 } 10486 10487 request->req.n_channels = i; 10488 10489 for (i = 0; i < request->req.n_channels; i++) { 10490 struct ieee80211_channel *chan = request->req.channels[i]; 10491 10492 /* if we can go off-channel to the target channel we're good */ 10493 if (cfg80211_off_channel_oper_allowed(wdev, chan)) 10494 continue; 10495 10496 if (!cfg80211_wdev_on_sub_chan(wdev, chan, true)) { 10497 err = -EBUSY; 10498 goto out_free; 10499 } 10500 } 10501 10502 i = 0; 10503 if (n_ssids) { 10504 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) { 10505 if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) { 10506 err = -EINVAL; 10507 goto out_free; 10508 } 10509 request->req.ssids[i].ssid_len = nla_len(attr); 10510 memcpy(request->req.ssids[i].ssid, 10511 nla_data(attr), nla_len(attr)); 10512 i++; 10513 } 10514 } 10515 10516 if (info->attrs[NL80211_ATTR_IE]) { 10517 request->req.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); 10518 memcpy((void *)request->req.ie, 10519 nla_data(info->attrs[NL80211_ATTR_IE]), 10520 request->req.ie_len); 10521 } 10522 10523 for (i = 0; i < NUM_NL80211_BANDS; i++) 10524 if (wiphy->bands[i]) 10525 request->req.rates[i] = 10526 (1 << wiphy->bands[i]->n_bitrates) - 1; 10527 10528 if (info->attrs[NL80211_ATTR_SCAN_SUPP_RATES]) { 10529 nla_for_each_nested(attr, 10530 info->attrs[NL80211_ATTR_SCAN_SUPP_RATES], 10531 tmp) { 10532 enum nl80211_band band = nla_type(attr); 10533 10534 if (band < 0 || band >= NUM_NL80211_BANDS) { 10535 err = -EINVAL; 10536 goto out_free; 10537 } 10538 10539 if (!wiphy->bands[band]) 10540 continue; 10541 10542 err = ieee80211_get_ratemask(wiphy->bands[band], 10543 nla_data(attr), 10544 nla_len(attr), 10545 &request->req.rates[band]); 10546 if (err) 10547 goto out_free; 10548 } 10549 } 10550 10551 if (info->attrs[NL80211_ATTR_MEASUREMENT_DURATION]) { 10552 request->req.duration = 10553 nla_get_u16(info->attrs[NL80211_ATTR_MEASUREMENT_DURATION]); 10554 request->req.duration_mandatory = 10555 nla_get_flag(info->attrs[NL80211_ATTR_MEASUREMENT_DURATION_MANDATORY]); 10556 } 10557 10558 err = nl80211_check_scan_flags_reg(wiphy, wdev, info->attrs, request); 10559 if (err) 10560 goto out_free; 10561 10562 request->req.no_cck = 10563 nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]); 10564 10565 /* Initial implementation used NL80211_ATTR_MAC to set the specific 10566 * BSSID to scan for. This was problematic because that same attribute 10567 * was already used for another purpose (local random MAC address). The 10568 * NL80211_ATTR_BSSID attribute was added to fix this. For backwards 10569 * compatibility with older userspace components, also use the 10570 * NL80211_ATTR_MAC value here if it can be determined to be used for 10571 * the specific BSSID use case instead of the random MAC address 10572 * (NL80211_ATTR_SCAN_FLAGS is used to enable random MAC address use). 10573 */ 10574 if (info->attrs[NL80211_ATTR_BSSID]) 10575 memcpy(request->req.bssid, 10576 nla_data(info->attrs[NL80211_ATTR_BSSID]), ETH_ALEN); 10577 else if (!(request->req.flags & NL80211_SCAN_FLAG_RANDOM_ADDR) && 10578 info->attrs[NL80211_ATTR_MAC]) 10579 memcpy(request->req.bssid, 10580 nla_data(info->attrs[NL80211_ATTR_MAC]), 10581 ETH_ALEN); 10582 else 10583 eth_broadcast_addr(request->req.bssid); 10584 10585 request->req.tsf_report_link_id = 10586 nl80211_link_id_or_invalid(info->attrs); 10587 request->req.wdev = wdev; 10588 request->req.wiphy = &rdev->wiphy; 10589 request->req.scan_start = jiffies; 10590 10591 rdev->scan_req = request; 10592 err = cfg80211_scan(rdev); 10593 10594 if (err) 10595 goto out_free; 10596 10597 nl80211_send_scan_start(rdev, wdev); 10598 dev_hold(wdev->netdev); 10599 10600 return 0; 10601 10602 out_free: 10603 rdev->scan_req = NULL; 10604 kfree(request); 10605 10606 return err; 10607 } 10608 10609 static int nl80211_abort_scan(struct sk_buff *skb, struct genl_info *info) 10610 { 10611 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 10612 struct wireless_dev *wdev = info->user_ptr[1]; 10613 10614 if (!rdev->ops->abort_scan) 10615 return -EOPNOTSUPP; 10616 10617 if (rdev->scan_msg) 10618 return 0; 10619 10620 if (!rdev->scan_req) 10621 return -ENOENT; 10622 10623 rdev_abort_scan(rdev, wdev); 10624 return 0; 10625 } 10626 10627 static int 10628 nl80211_parse_sched_scan_plans(struct wiphy *wiphy, int n_plans, 10629 struct cfg80211_sched_scan_request *request, 10630 struct nlattr **attrs) 10631 { 10632 int tmp, err, i = 0; 10633 struct nlattr *attr; 10634 10635 if (!attrs[NL80211_ATTR_SCHED_SCAN_PLANS]) { 10636 u32 interval; 10637 10638 /* 10639 * If scan plans are not specified, 10640 * %NL80211_ATTR_SCHED_SCAN_INTERVAL will be specified. In this 10641 * case one scan plan will be set with the specified scan 10642 * interval and infinite number of iterations. 10643 */ 10644 interval = nla_get_u32(attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL]); 10645 if (!interval) 10646 return -EINVAL; 10647 10648 request->scan_plans[0].interval = 10649 DIV_ROUND_UP(interval, MSEC_PER_SEC); 10650 if (!request->scan_plans[0].interval) 10651 return -EINVAL; 10652 10653 if (request->scan_plans[0].interval > 10654 wiphy->max_sched_scan_plan_interval) 10655 request->scan_plans[0].interval = 10656 wiphy->max_sched_scan_plan_interval; 10657 10658 return 0; 10659 } 10660 10661 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCHED_SCAN_PLANS], tmp) { 10662 struct nlattr *plan[NL80211_SCHED_SCAN_PLAN_MAX + 1]; 10663 10664 if (WARN_ON(i >= n_plans)) 10665 return -EINVAL; 10666 10667 err = nla_parse_nested_deprecated(plan, 10668 NL80211_SCHED_SCAN_PLAN_MAX, 10669 attr, nl80211_plan_policy, 10670 NULL); 10671 if (err) 10672 return err; 10673 10674 if (!plan[NL80211_SCHED_SCAN_PLAN_INTERVAL]) 10675 return -EINVAL; 10676 10677 request->scan_plans[i].interval = 10678 nla_get_u32(plan[NL80211_SCHED_SCAN_PLAN_INTERVAL]); 10679 if (!request->scan_plans[i].interval || 10680 request->scan_plans[i].interval > 10681 wiphy->max_sched_scan_plan_interval) 10682 return -EINVAL; 10683 10684 if (plan[NL80211_SCHED_SCAN_PLAN_ITERATIONS]) { 10685 request->scan_plans[i].iterations = 10686 nla_get_u32(plan[NL80211_SCHED_SCAN_PLAN_ITERATIONS]); 10687 if (!request->scan_plans[i].iterations || 10688 (request->scan_plans[i].iterations > 10689 wiphy->max_sched_scan_plan_iterations)) 10690 return -EINVAL; 10691 } else if (i < n_plans - 1) { 10692 /* 10693 * All scan plans but the last one must specify 10694 * a finite number of iterations 10695 */ 10696 return -EINVAL; 10697 } 10698 10699 i++; 10700 } 10701 10702 /* 10703 * The last scan plan must not specify the number of 10704 * iterations, it is supposed to run infinitely 10705 */ 10706 if (request->scan_plans[n_plans - 1].iterations) 10707 return -EINVAL; 10708 10709 return 0; 10710 } 10711 10712 static struct cfg80211_sched_scan_request * 10713 nl80211_parse_sched_scan(struct wiphy *wiphy, struct wireless_dev *wdev, 10714 struct nlattr **attrs, int max_match_sets) 10715 { 10716 struct cfg80211_sched_scan_request *request; 10717 struct nlattr *attr; 10718 int err, tmp, n_ssids = 0, n_match_sets = 0, n_channels, i, n_plans = 0; 10719 enum nl80211_band band; 10720 size_t ie_len, size; 10721 struct nlattr *tb[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1]; 10722 s32 default_match_rssi = NL80211_SCAN_RSSI_THOLD_OFF; 10723 10724 if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) { 10725 n_channels = validate_scan_freqs( 10726 attrs[NL80211_ATTR_SCAN_FREQUENCIES]); 10727 if (!n_channels) 10728 return ERR_PTR(-EINVAL); 10729 } else { 10730 n_channels = ieee80211_get_num_supported_channels(wiphy); 10731 } 10732 10733 if (attrs[NL80211_ATTR_SCAN_SSIDS]) 10734 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS], 10735 tmp) 10736 n_ssids++; 10737 10738 if (n_ssids > wiphy->max_sched_scan_ssids) 10739 return ERR_PTR(-EINVAL); 10740 10741 /* 10742 * First, count the number of 'real' matchsets. Due to an issue with 10743 * the old implementation, matchsets containing only the RSSI attribute 10744 * (NL80211_SCHED_SCAN_MATCH_ATTR_RSSI) are considered as the 'default' 10745 * RSSI for all matchsets, rather than their own matchset for reporting 10746 * all APs with a strong RSSI. This is needed to be compatible with 10747 * older userspace that treated a matchset with only the RSSI as the 10748 * global RSSI for all other matchsets - if there are other matchsets. 10749 */ 10750 if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) { 10751 nla_for_each_nested(attr, 10752 attrs[NL80211_ATTR_SCHED_SCAN_MATCH], 10753 tmp) { 10754 struct nlattr *rssi; 10755 10756 err = nla_parse_nested_deprecated(tb, 10757 NL80211_SCHED_SCAN_MATCH_ATTR_MAX, 10758 attr, 10759 nl80211_match_policy, 10760 NULL); 10761 if (err) 10762 return ERR_PTR(err); 10763 10764 /* SSID and BSSID are mutually exclusive */ 10765 if (tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID] && 10766 tb[NL80211_SCHED_SCAN_MATCH_ATTR_BSSID]) 10767 return ERR_PTR(-EINVAL); 10768 10769 /* add other standalone attributes here */ 10770 if (tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID] || 10771 tb[NL80211_SCHED_SCAN_MATCH_ATTR_BSSID]) { 10772 n_match_sets++; 10773 continue; 10774 } 10775 rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI]; 10776 if (rssi) 10777 default_match_rssi = nla_get_s32(rssi); 10778 } 10779 } 10780 10781 /* However, if there's no other matchset, add the RSSI one */ 10782 if (!n_match_sets && default_match_rssi != NL80211_SCAN_RSSI_THOLD_OFF) 10783 n_match_sets = 1; 10784 10785 if (n_match_sets > max_match_sets) 10786 return ERR_PTR(-EINVAL); 10787 10788 if (attrs[NL80211_ATTR_IE]) 10789 ie_len = nla_len(attrs[NL80211_ATTR_IE]); 10790 else 10791 ie_len = 0; 10792 10793 if (ie_len > wiphy->max_sched_scan_ie_len) 10794 return ERR_PTR(-EINVAL); 10795 10796 if (attrs[NL80211_ATTR_SCHED_SCAN_PLANS]) { 10797 /* 10798 * NL80211_ATTR_SCHED_SCAN_INTERVAL must not be specified since 10799 * each scan plan already specifies its own interval 10800 */ 10801 if (attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL]) 10802 return ERR_PTR(-EINVAL); 10803 10804 nla_for_each_nested(attr, 10805 attrs[NL80211_ATTR_SCHED_SCAN_PLANS], tmp) 10806 n_plans++; 10807 } else { 10808 /* 10809 * The scan interval attribute is kept for backward 10810 * compatibility. If no scan plans are specified and sched scan 10811 * interval is specified, one scan plan will be set with this 10812 * scan interval and infinite number of iterations. 10813 */ 10814 if (!attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL]) 10815 return ERR_PTR(-EINVAL); 10816 10817 n_plans = 1; 10818 } 10819 10820 if (!n_plans || n_plans > wiphy->max_sched_scan_plans) 10821 return ERR_PTR(-EINVAL); 10822 10823 if (!wiphy_ext_feature_isset( 10824 wiphy, NL80211_EXT_FEATURE_SCHED_SCAN_RELATIVE_RSSI) && 10825 (attrs[NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI] || 10826 attrs[NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST])) 10827 return ERR_PTR(-EINVAL); 10828 10829 size = struct_size(request, channels, n_channels); 10830 size = size_add(size, array_size(sizeof(*request->ssids), n_ssids)); 10831 size = size_add(size, array_size(sizeof(*request->match_sets), 10832 n_match_sets)); 10833 size = size_add(size, array_size(sizeof(*request->scan_plans), 10834 n_plans)); 10835 size = size_add(size, ie_len); 10836 request = kzalloc(size, GFP_KERNEL); 10837 if (!request) 10838 return ERR_PTR(-ENOMEM); 10839 request->n_channels = n_channels; 10840 10841 if (n_ssids) 10842 request->ssids = (void *)request + 10843 struct_size(request, channels, n_channels); 10844 request->n_ssids = n_ssids; 10845 if (ie_len) { 10846 if (n_ssids) 10847 request->ie = (void *)(request->ssids + n_ssids); 10848 else 10849 request->ie = (void *)(request->channels + n_channels); 10850 } 10851 10852 if (n_match_sets) { 10853 if (request->ie) 10854 request->match_sets = (void *)(request->ie + ie_len); 10855 else if (n_ssids) 10856 request->match_sets = 10857 (void *)(request->ssids + n_ssids); 10858 else 10859 request->match_sets = 10860 (void *)(request->channels + n_channels); 10861 } 10862 request->n_match_sets = n_match_sets; 10863 10864 if (n_match_sets) 10865 request->scan_plans = (void *)(request->match_sets + 10866 n_match_sets); 10867 else if (request->ie) 10868 request->scan_plans = (void *)(request->ie + ie_len); 10869 else if (n_ssids) 10870 request->scan_plans = (void *)(request->ssids + n_ssids); 10871 else 10872 request->scan_plans = (void *)(request->channels + n_channels); 10873 10874 request->n_scan_plans = n_plans; 10875 10876 i = 0; 10877 if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) { 10878 /* user specified, bail out if channel not found */ 10879 nla_for_each_nested(attr, 10880 attrs[NL80211_ATTR_SCAN_FREQUENCIES], 10881 tmp) { 10882 struct ieee80211_channel *chan; 10883 10884 chan = ieee80211_get_channel(wiphy, nla_get_u32(attr)); 10885 10886 if (!chan) { 10887 err = -EINVAL; 10888 goto out_free; 10889 } 10890 10891 /* ignore disabled channels */ 10892 if (chan->flags & IEEE80211_CHAN_DISABLED) 10893 continue; 10894 10895 request->channels[i] = chan; 10896 i++; 10897 } 10898 } else { 10899 /* all channels */ 10900 for (band = 0; band < NUM_NL80211_BANDS; band++) { 10901 int j; 10902 10903 if (!wiphy->bands[band]) 10904 continue; 10905 for (j = 0; j < wiphy->bands[band]->n_channels; j++) { 10906 struct ieee80211_channel *chan; 10907 10908 chan = &wiphy->bands[band]->channels[j]; 10909 10910 if (chan->flags & IEEE80211_CHAN_DISABLED) 10911 continue; 10912 10913 request->channels[i] = chan; 10914 i++; 10915 } 10916 } 10917 } 10918 10919 if (!i) { 10920 err = -EINVAL; 10921 goto out_free; 10922 } 10923 10924 request->n_channels = i; 10925 10926 i = 0; 10927 if (n_ssids) { 10928 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS], 10929 tmp) { 10930 if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) { 10931 err = -EINVAL; 10932 goto out_free; 10933 } 10934 request->ssids[i].ssid_len = nla_len(attr); 10935 memcpy(request->ssids[i].ssid, nla_data(attr), 10936 nla_len(attr)); 10937 i++; 10938 } 10939 } 10940 10941 i = 0; 10942 if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) { 10943 nla_for_each_nested(attr, 10944 attrs[NL80211_ATTR_SCHED_SCAN_MATCH], 10945 tmp) { 10946 struct nlattr *ssid, *bssid, *rssi; 10947 10948 err = nla_parse_nested_deprecated(tb, 10949 NL80211_SCHED_SCAN_MATCH_ATTR_MAX, 10950 attr, 10951 nl80211_match_policy, 10952 NULL); 10953 if (err) 10954 goto out_free; 10955 ssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID]; 10956 bssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_BSSID]; 10957 10958 if (!ssid && !bssid) { 10959 i++; 10960 continue; 10961 } 10962 10963 if (WARN_ON(i >= n_match_sets)) { 10964 /* this indicates a programming error, 10965 * the loop above should have verified 10966 * things properly 10967 */ 10968 err = -EINVAL; 10969 goto out_free; 10970 } 10971 10972 if (ssid) { 10973 memcpy(request->match_sets[i].ssid.ssid, 10974 nla_data(ssid), nla_len(ssid)); 10975 request->match_sets[i].ssid.ssid_len = 10976 nla_len(ssid); 10977 } 10978 if (bssid) 10979 memcpy(request->match_sets[i].bssid, 10980 nla_data(bssid), ETH_ALEN); 10981 10982 /* special attribute - old implementation w/a */ 10983 request->match_sets[i].rssi_thold = default_match_rssi; 10984 rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI]; 10985 if (rssi) 10986 request->match_sets[i].rssi_thold = 10987 nla_get_s32(rssi); 10988 i++; 10989 } 10990 10991 /* there was no other matchset, so the RSSI one is alone */ 10992 if (i == 0 && n_match_sets) 10993 request->match_sets[0].rssi_thold = default_match_rssi; 10994 10995 request->min_rssi_thold = INT_MAX; 10996 for (i = 0; i < n_match_sets; i++) 10997 request->min_rssi_thold = 10998 min(request->match_sets[i].rssi_thold, 10999 request->min_rssi_thold); 11000 } else { 11001 request->min_rssi_thold = NL80211_SCAN_RSSI_THOLD_OFF; 11002 } 11003 11004 if (ie_len) { 11005 request->ie_len = ie_len; 11006 memcpy((void *)request->ie, 11007 nla_data(attrs[NL80211_ATTR_IE]), 11008 request->ie_len); 11009 } 11010 11011 err = nl80211_check_scan_flags_sched(wiphy, wdev, attrs, request); 11012 if (err) 11013 goto out_free; 11014 11015 if (attrs[NL80211_ATTR_SCHED_SCAN_DELAY]) 11016 request->delay = 11017 nla_get_u32(attrs[NL80211_ATTR_SCHED_SCAN_DELAY]); 11018 11019 if (attrs[NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI]) { 11020 request->relative_rssi = nla_get_s8( 11021 attrs[NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI]); 11022 request->relative_rssi_set = true; 11023 } 11024 11025 if (request->relative_rssi_set && 11026 attrs[NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST]) { 11027 struct nl80211_bss_select_rssi_adjust *rssi_adjust; 11028 11029 rssi_adjust = nla_data( 11030 attrs[NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST]); 11031 request->rssi_adjust.band = rssi_adjust->band; 11032 request->rssi_adjust.delta = rssi_adjust->delta; 11033 if (!is_band_valid(wiphy, request->rssi_adjust.band)) { 11034 err = -EINVAL; 11035 goto out_free; 11036 } 11037 } 11038 11039 err = nl80211_parse_sched_scan_plans(wiphy, n_plans, request, attrs); 11040 if (err) 11041 goto out_free; 11042 11043 request->scan_start = jiffies; 11044 11045 return request; 11046 11047 out_free: 11048 kfree(request); 11049 return ERR_PTR(err); 11050 } 11051 11052 static int nl80211_start_sched_scan(struct sk_buff *skb, 11053 struct genl_info *info) 11054 { 11055 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 11056 struct net_device *dev = info->user_ptr[1]; 11057 struct wireless_dev *wdev = dev->ieee80211_ptr; 11058 struct cfg80211_sched_scan_request *sched_scan_req; 11059 bool want_multi; 11060 int err; 11061 11062 if (!rdev->wiphy.max_sched_scan_reqs || !rdev->ops->sched_scan_start) 11063 return -EOPNOTSUPP; 11064 11065 want_multi = info->attrs[NL80211_ATTR_SCHED_SCAN_MULTI]; 11066 err = cfg80211_sched_scan_req_possible(rdev, want_multi); 11067 if (err) 11068 return err; 11069 11070 sched_scan_req = nl80211_parse_sched_scan(&rdev->wiphy, wdev, 11071 info->attrs, 11072 rdev->wiphy.max_match_sets); 11073 11074 err = PTR_ERR_OR_ZERO(sched_scan_req); 11075 if (err) 11076 goto out_err; 11077 11078 /* leave request id zero for legacy request 11079 * or if driver does not support multi-scheduled scan 11080 */ 11081 if (want_multi && rdev->wiphy.max_sched_scan_reqs > 1) 11082 sched_scan_req->reqid = cfg80211_assign_cookie(rdev); 11083 11084 err = rdev_sched_scan_start(rdev, dev, sched_scan_req); 11085 if (err) 11086 goto out_free; 11087 11088 sched_scan_req->dev = dev; 11089 sched_scan_req->wiphy = &rdev->wiphy; 11090 11091 if (info->attrs[NL80211_ATTR_SOCKET_OWNER]) 11092 sched_scan_req->owner_nlportid = info->snd_portid; 11093 11094 cfg80211_add_sched_scan_req(rdev, sched_scan_req); 11095 11096 nl80211_send_sched_scan(sched_scan_req, NL80211_CMD_START_SCHED_SCAN); 11097 return 0; 11098 11099 out_free: 11100 kfree(sched_scan_req); 11101 out_err: 11102 return err; 11103 } 11104 11105 static int nl80211_stop_sched_scan(struct sk_buff *skb, 11106 struct genl_info *info) 11107 { 11108 struct cfg80211_sched_scan_request *req; 11109 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 11110 u64 cookie; 11111 11112 if (!rdev->wiphy.max_sched_scan_reqs || !rdev->ops->sched_scan_stop) 11113 return -EOPNOTSUPP; 11114 11115 if (info->attrs[NL80211_ATTR_COOKIE]) { 11116 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]); 11117 return __cfg80211_stop_sched_scan(rdev, cookie, false); 11118 } 11119 11120 req = list_first_or_null_rcu(&rdev->sched_scan_req_list, 11121 struct cfg80211_sched_scan_request, 11122 list); 11123 if (!req || req->reqid || 11124 (req->owner_nlportid && 11125 req->owner_nlportid != info->snd_portid)) 11126 return -ENOENT; 11127 11128 return cfg80211_stop_sched_scan_req(rdev, req, false); 11129 } 11130 11131 static int nl80211_start_radar_detection(struct sk_buff *skb, 11132 struct genl_info *info) 11133 { 11134 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 11135 struct net_device *dev = info->user_ptr[1]; 11136 struct wireless_dev *wdev = dev->ieee80211_ptr; 11137 int link_id = nl80211_link_id(info->attrs); 11138 struct wiphy *wiphy = wdev->wiphy; 11139 struct cfg80211_chan_def chandef; 11140 enum nl80211_dfs_regions dfs_region; 11141 unsigned int cac_time_ms; 11142 int err; 11143 11144 flush_delayed_work(&rdev->dfs_update_channels_wk); 11145 11146 switch (wdev->iftype) { 11147 case NL80211_IFTYPE_AP: 11148 case NL80211_IFTYPE_P2P_GO: 11149 case NL80211_IFTYPE_MESH_POINT: 11150 case NL80211_IFTYPE_ADHOC: 11151 break; 11152 default: 11153 /* caution - see cfg80211_beaconing_iface_active() below */ 11154 return -EINVAL; 11155 } 11156 11157 guard(wiphy)(wiphy); 11158 11159 dfs_region = reg_get_dfs_region(wiphy); 11160 if (dfs_region == NL80211_DFS_UNSET) 11161 return -EINVAL; 11162 11163 err = nl80211_parse_chandef(rdev, info, &chandef); 11164 if (err) 11165 return err; 11166 11167 err = cfg80211_chandef_dfs_required(wiphy, &chandef, wdev->iftype); 11168 if (err < 0) 11169 return err; 11170 11171 if (err == 0) 11172 return -EINVAL; 11173 11174 if (!cfg80211_chandef_dfs_usable(wiphy, &chandef)) 11175 return -EINVAL; 11176 11177 if (nla_get_flag(info->attrs[NL80211_ATTR_RADAR_BACKGROUND])) 11178 return cfg80211_start_background_radar_detection(rdev, wdev, 11179 &chandef); 11180 11181 if (cfg80211_beaconing_iface_active(wdev)) { 11182 /* During MLO other link(s) can beacon, only the current link 11183 * can not already beacon 11184 */ 11185 if (wdev->valid_links && 11186 !wdev->links[link_id].ap.beacon_interval) { 11187 /* nothing */ 11188 } else { 11189 return -EBUSY; 11190 } 11191 } 11192 11193 if (wdev->links[link_id].cac_started) 11194 return -EBUSY; 11195 11196 /* CAC start is offloaded to HW and can't be started manually */ 11197 if (wiphy_ext_feature_isset(wiphy, NL80211_EXT_FEATURE_DFS_OFFLOAD)) 11198 return -EOPNOTSUPP; 11199 11200 if (!rdev->ops->start_radar_detection) 11201 return -EOPNOTSUPP; 11202 11203 cac_time_ms = cfg80211_chandef_dfs_cac_time(&rdev->wiphy, &chandef); 11204 if (WARN_ON(!cac_time_ms)) 11205 cac_time_ms = IEEE80211_DFS_MIN_CAC_TIME_MS; 11206 11207 err = rdev_start_radar_detection(rdev, dev, &chandef, cac_time_ms, 11208 link_id); 11209 if (err) 11210 return err; 11211 11212 switch (wdev->iftype) { 11213 case NL80211_IFTYPE_AP: 11214 case NL80211_IFTYPE_P2P_GO: 11215 wdev->links[link_id].ap.chandef = chandef; 11216 break; 11217 case NL80211_IFTYPE_ADHOC: 11218 wdev->u.ibss.chandef = chandef; 11219 break; 11220 case NL80211_IFTYPE_MESH_POINT: 11221 wdev->u.mesh.chandef = chandef; 11222 break; 11223 default: 11224 break; 11225 } 11226 wdev->links[link_id].cac_started = true; 11227 wdev->links[link_id].cac_start_time = jiffies; 11228 wdev->links[link_id].cac_time_ms = cac_time_ms; 11229 11230 return 0; 11231 } 11232 11233 static int nl80211_notify_radar_detection(struct sk_buff *skb, 11234 struct genl_info *info) 11235 { 11236 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 11237 struct net_device *dev = info->user_ptr[1]; 11238 struct wireless_dev *wdev = dev->ieee80211_ptr; 11239 struct wiphy *wiphy = wdev->wiphy; 11240 struct cfg80211_chan_def chandef; 11241 enum nl80211_dfs_regions dfs_region; 11242 int err; 11243 11244 dfs_region = reg_get_dfs_region(wiphy); 11245 if (dfs_region == NL80211_DFS_UNSET) { 11246 GENL_SET_ERR_MSG(info, 11247 "DFS Region is not set. Unexpected Radar indication"); 11248 return -EINVAL; 11249 } 11250 11251 err = nl80211_parse_chandef(rdev, info, &chandef); 11252 if (err) { 11253 GENL_SET_ERR_MSG(info, "Unable to extract chandef info"); 11254 return err; 11255 } 11256 11257 err = cfg80211_chandef_dfs_required(wiphy, &chandef, wdev->iftype); 11258 if (err < 0) { 11259 GENL_SET_ERR_MSG(info, "chandef is invalid"); 11260 return err; 11261 } 11262 11263 if (err == 0) { 11264 GENL_SET_ERR_MSG(info, 11265 "Unexpected Radar indication for chandef/iftype"); 11266 return -EINVAL; 11267 } 11268 11269 /* Do not process this notification if radar is already detected 11270 * by kernel on this channel, and return success. 11271 */ 11272 if (chandef.chan->dfs_state == NL80211_DFS_UNAVAILABLE) 11273 return 0; 11274 11275 cfg80211_set_dfs_state(wiphy, &chandef, NL80211_DFS_UNAVAILABLE); 11276 11277 cfg80211_sched_dfs_chan_update(rdev); 11278 11279 rdev->radar_chandef = chandef; 11280 11281 /* Propagate this notification to other radios as well */ 11282 queue_work(cfg80211_wq, &rdev->propagate_radar_detect_wk); 11283 11284 return 0; 11285 } 11286 11287 static int nl80211_parse_counter_offsets(struct cfg80211_registered_device *rdev, 11288 const u8 *data, size_t datalen, 11289 int first_count, struct nlattr *attr, 11290 const u16 **offsets, unsigned int *n_offsets) 11291 { 11292 int i; 11293 11294 *n_offsets = 0; 11295 11296 if (!attr) 11297 return 0; 11298 11299 if (!nla_len(attr) || (nla_len(attr) % sizeof(u16))) 11300 return -EINVAL; 11301 11302 *n_offsets = nla_len(attr) / sizeof(u16); 11303 if (rdev->wiphy.max_num_csa_counters && 11304 (*n_offsets > rdev->wiphy.max_num_csa_counters)) 11305 return -EINVAL; 11306 11307 *offsets = nla_data(attr); 11308 11309 /* sanity checks - counters should fit and be the same */ 11310 for (i = 0; i < *n_offsets; i++) { 11311 u16 offset = (*offsets)[i]; 11312 11313 if (offset >= datalen) 11314 return -EINVAL; 11315 11316 if (first_count != -1 && data[offset] != first_count) 11317 return -EINVAL; 11318 } 11319 11320 return 0; 11321 } 11322 11323 static int nl80211_channel_switch(struct sk_buff *skb, struct genl_info *info) 11324 { 11325 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 11326 unsigned int link_id = nl80211_link_id(info->attrs); 11327 struct net_device *dev = info->user_ptr[1]; 11328 struct wireless_dev *wdev = dev->ieee80211_ptr; 11329 struct cfg80211_csa_settings params; 11330 struct nlattr **csa_attrs = NULL; 11331 int err; 11332 bool need_new_beacon = false; 11333 bool need_handle_dfs_flag = true; 11334 u32 cs_count; 11335 11336 if (!rdev->ops->channel_switch || 11337 !(rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH)) 11338 return -EOPNOTSUPP; 11339 11340 switch (dev->ieee80211_ptr->iftype) { 11341 case NL80211_IFTYPE_AP: 11342 case NL80211_IFTYPE_P2P_GO: 11343 need_new_beacon = true; 11344 /* For all modes except AP the handle_dfs flag needs to be 11345 * supplied to tell the kernel that userspace will handle radar 11346 * events when they happen. Otherwise a switch to a channel 11347 * requiring DFS will be rejected. 11348 */ 11349 need_handle_dfs_flag = false; 11350 11351 /* useless if AP is not running */ 11352 if (!wdev->links[link_id].ap.beacon_interval) 11353 return -ENOTCONN; 11354 break; 11355 case NL80211_IFTYPE_ADHOC: 11356 if (!wdev->u.ibss.ssid_len) 11357 return -ENOTCONN; 11358 break; 11359 case NL80211_IFTYPE_MESH_POINT: 11360 if (!wdev->u.mesh.id_len) 11361 return -ENOTCONN; 11362 break; 11363 default: 11364 return -EOPNOTSUPP; 11365 } 11366 11367 memset(¶ms, 0, sizeof(params)); 11368 params.beacon_csa.ftm_responder = -1; 11369 11370 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] || 11371 !info->attrs[NL80211_ATTR_CH_SWITCH_COUNT]) 11372 return -EINVAL; 11373 11374 /* only important for AP, IBSS and mesh create IEs internally */ 11375 if (need_new_beacon && !info->attrs[NL80211_ATTR_CSA_IES]) 11376 return -EINVAL; 11377 11378 /* Even though the attribute is u32, the specification says 11379 * u8, so let's make sure we don't overflow. 11380 */ 11381 cs_count = nla_get_u32(info->attrs[NL80211_ATTR_CH_SWITCH_COUNT]); 11382 if (cs_count > 255) 11383 return -EINVAL; 11384 11385 params.count = cs_count; 11386 11387 if (!need_new_beacon) 11388 goto skip_beacons; 11389 11390 err = nl80211_parse_beacon(rdev, info->attrs, ¶ms.beacon_after, 11391 info->extack); 11392 if (err) 11393 goto free; 11394 11395 csa_attrs = kcalloc(NL80211_ATTR_MAX + 1, sizeof(*csa_attrs), 11396 GFP_KERNEL); 11397 if (!csa_attrs) { 11398 err = -ENOMEM; 11399 goto free; 11400 } 11401 11402 err = nla_parse_nested_deprecated(csa_attrs, NL80211_ATTR_MAX, 11403 info->attrs[NL80211_ATTR_CSA_IES], 11404 nl80211_policy, info->extack); 11405 if (err) 11406 goto free; 11407 11408 err = nl80211_parse_beacon(rdev, csa_attrs, ¶ms.beacon_csa, 11409 info->extack); 11410 if (err) 11411 goto free; 11412 11413 if (!csa_attrs[NL80211_ATTR_CNTDWN_OFFS_BEACON]) { 11414 err = -EINVAL; 11415 goto free; 11416 } 11417 11418 err = nl80211_parse_counter_offsets(rdev, params.beacon_csa.tail, 11419 params.beacon_csa.tail_len, 11420 params.count, 11421 csa_attrs[NL80211_ATTR_CNTDWN_OFFS_BEACON], 11422 ¶ms.counter_offsets_beacon, 11423 ¶ms.n_counter_offsets_beacon); 11424 if (err) 11425 goto free; 11426 11427 err = nl80211_parse_counter_offsets(rdev, params.beacon_csa.probe_resp, 11428 params.beacon_csa.probe_resp_len, 11429 params.count, 11430 csa_attrs[NL80211_ATTR_CNTDWN_OFFS_PRESP], 11431 ¶ms.counter_offsets_presp, 11432 ¶ms.n_counter_offsets_presp); 11433 if (err) 11434 goto free; 11435 11436 skip_beacons: 11437 err = nl80211_parse_chandef(rdev, info, ¶ms.chandef); 11438 if (err) 11439 goto free; 11440 11441 if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, ¶ms.chandef, 11442 wdev->iftype)) { 11443 err = -EINVAL; 11444 goto free; 11445 } 11446 11447 err = cfg80211_chandef_dfs_required(wdev->wiphy, 11448 ¶ms.chandef, 11449 wdev->iftype); 11450 if (err < 0) 11451 goto free; 11452 11453 if (err > 0) { 11454 params.radar_required = true; 11455 if (need_handle_dfs_flag && 11456 !nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS])) { 11457 err = -EINVAL; 11458 goto free; 11459 } 11460 } 11461 11462 if (info->attrs[NL80211_ATTR_CH_SWITCH_BLOCK_TX]) 11463 params.block_tx = true; 11464 11465 if ((wdev->iftype == NL80211_IFTYPE_AP || 11466 wdev->iftype == NL80211_IFTYPE_P2P_GO) && 11467 info->attrs[NL80211_ATTR_UNSOL_BCAST_PROBE_RESP]) { 11468 err = nl80211_parse_unsol_bcast_probe_resp( 11469 rdev, info->attrs[NL80211_ATTR_UNSOL_BCAST_PROBE_RESP], 11470 ¶ms.unsol_bcast_probe_resp); 11471 if (err) 11472 goto free; 11473 } 11474 11475 params.link_id = link_id; 11476 err = rdev_channel_switch(rdev, dev, ¶ms); 11477 11478 free: 11479 kfree(params.beacon_after.mbssid_ies); 11480 kfree(params.beacon_csa.mbssid_ies); 11481 kfree(params.beacon_after.rnr_ies); 11482 kfree(params.beacon_csa.rnr_ies); 11483 kfree(csa_attrs); 11484 return err; 11485 } 11486 11487 static int nl80211_send_bss(struct sk_buff *msg, struct netlink_callback *cb, 11488 u32 seq, int flags, 11489 struct cfg80211_registered_device *rdev, 11490 struct wireless_dev *wdev, 11491 struct cfg80211_internal_bss *intbss) 11492 { 11493 struct cfg80211_bss *res = &intbss->pub; 11494 const struct cfg80211_bss_ies *ies; 11495 unsigned int link_id; 11496 void *hdr; 11497 struct nlattr *bss; 11498 11499 lockdep_assert_wiphy(wdev->wiphy); 11500 11501 hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags, 11502 NL80211_CMD_NEW_SCAN_RESULTS); 11503 if (!hdr) 11504 return -1; 11505 11506 genl_dump_check_consistent(cb, hdr); 11507 11508 if (nla_put_u32(msg, NL80211_ATTR_GENERATION, rdev->bss_generation)) 11509 goto nla_put_failure; 11510 if (wdev->netdev && 11511 nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex)) 11512 goto nla_put_failure; 11513 if (nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev), 11514 NL80211_ATTR_PAD)) 11515 goto nla_put_failure; 11516 11517 bss = nla_nest_start_noflag(msg, NL80211_ATTR_BSS); 11518 if (!bss) 11519 goto nla_put_failure; 11520 if ((!is_zero_ether_addr(res->bssid) && 11521 nla_put(msg, NL80211_BSS_BSSID, ETH_ALEN, res->bssid))) 11522 goto nla_put_failure; 11523 11524 rcu_read_lock(); 11525 /* indicate whether we have probe response data or not */ 11526 if (rcu_access_pointer(res->proberesp_ies) && 11527 nla_put_flag(msg, NL80211_BSS_PRESP_DATA)) 11528 goto fail_unlock_rcu; 11529 11530 /* this pointer prefers to be pointed to probe response data 11531 * but is always valid 11532 */ 11533 ies = rcu_dereference(res->ies); 11534 if (ies) { 11535 if (nla_put_u64_64bit(msg, NL80211_BSS_TSF, ies->tsf, 11536 NL80211_BSS_PAD)) 11537 goto fail_unlock_rcu; 11538 if (ies->len && nla_put(msg, NL80211_BSS_INFORMATION_ELEMENTS, 11539 ies->len, ies->data)) 11540 goto fail_unlock_rcu; 11541 } 11542 11543 /* and this pointer is always (unless driver didn't know) beacon data */ 11544 ies = rcu_dereference(res->beacon_ies); 11545 if (ies && ies->from_beacon) { 11546 if (nla_put_u64_64bit(msg, NL80211_BSS_BEACON_TSF, ies->tsf, 11547 NL80211_BSS_PAD)) 11548 goto fail_unlock_rcu; 11549 if (ies->len && nla_put(msg, NL80211_BSS_BEACON_IES, 11550 ies->len, ies->data)) 11551 goto fail_unlock_rcu; 11552 } 11553 rcu_read_unlock(); 11554 11555 if (res->beacon_interval && 11556 nla_put_u16(msg, NL80211_BSS_BEACON_INTERVAL, res->beacon_interval)) 11557 goto nla_put_failure; 11558 if (nla_put_u16(msg, NL80211_BSS_CAPABILITY, res->capability) || 11559 nla_put_u32(msg, NL80211_BSS_FREQUENCY, res->channel->center_freq) || 11560 nla_put_u32(msg, NL80211_BSS_FREQUENCY_OFFSET, 11561 res->channel->freq_offset) || 11562 nla_put_u32(msg, NL80211_BSS_SEEN_MS_AGO, 11563 jiffies_to_msecs(jiffies - intbss->ts))) 11564 goto nla_put_failure; 11565 11566 if (intbss->parent_tsf && 11567 (nla_put_u64_64bit(msg, NL80211_BSS_PARENT_TSF, 11568 intbss->parent_tsf, NL80211_BSS_PAD) || 11569 nla_put(msg, NL80211_BSS_PARENT_BSSID, ETH_ALEN, 11570 intbss->parent_bssid))) 11571 goto nla_put_failure; 11572 11573 if (res->ts_boottime && 11574 nla_put_u64_64bit(msg, NL80211_BSS_LAST_SEEN_BOOTTIME, 11575 res->ts_boottime, NL80211_BSS_PAD)) 11576 goto nla_put_failure; 11577 11578 if (!nl80211_put_signal(msg, intbss->pub.chains, 11579 intbss->pub.chain_signal, 11580 NL80211_BSS_CHAIN_SIGNAL)) 11581 goto nla_put_failure; 11582 11583 if (intbss->bss_source != BSS_SOURCE_STA_PROFILE) { 11584 switch (rdev->wiphy.signal_type) { 11585 case CFG80211_SIGNAL_TYPE_MBM: 11586 if (nla_put_u32(msg, NL80211_BSS_SIGNAL_MBM, 11587 res->signal)) 11588 goto nla_put_failure; 11589 break; 11590 case CFG80211_SIGNAL_TYPE_UNSPEC: 11591 if (nla_put_u8(msg, NL80211_BSS_SIGNAL_UNSPEC, 11592 res->signal)) 11593 goto nla_put_failure; 11594 break; 11595 default: 11596 break; 11597 } 11598 } 11599 11600 switch (wdev->iftype) { 11601 case NL80211_IFTYPE_P2P_CLIENT: 11602 case NL80211_IFTYPE_STATION: 11603 for_each_valid_link(wdev, link_id) { 11604 if (intbss == wdev->links[link_id].client.current_bss && 11605 (nla_put_u32(msg, NL80211_BSS_STATUS, 11606 NL80211_BSS_STATUS_ASSOCIATED) || 11607 (wdev->valid_links && 11608 (nla_put_u8(msg, NL80211_BSS_MLO_LINK_ID, 11609 link_id) || 11610 nla_put(msg, NL80211_BSS_MLD_ADDR, ETH_ALEN, 11611 wdev->u.client.connected_addr))))) 11612 goto nla_put_failure; 11613 } 11614 break; 11615 case NL80211_IFTYPE_ADHOC: 11616 if (intbss == wdev->u.ibss.current_bss && 11617 nla_put_u32(msg, NL80211_BSS_STATUS, 11618 NL80211_BSS_STATUS_IBSS_JOINED)) 11619 goto nla_put_failure; 11620 break; 11621 default: 11622 break; 11623 } 11624 11625 if (nla_put_u32(msg, NL80211_BSS_USE_FOR, res->use_for)) 11626 goto nla_put_failure; 11627 11628 if (res->cannot_use_reasons && 11629 nla_put_u64_64bit(msg, NL80211_BSS_CANNOT_USE_REASONS, 11630 res->cannot_use_reasons, 11631 NL80211_BSS_PAD)) 11632 goto nla_put_failure; 11633 11634 nla_nest_end(msg, bss); 11635 11636 genlmsg_end(msg, hdr); 11637 return 0; 11638 11639 fail_unlock_rcu: 11640 rcu_read_unlock(); 11641 nla_put_failure: 11642 genlmsg_cancel(msg, hdr); 11643 return -EMSGSIZE; 11644 } 11645 11646 static int nl80211_dump_scan(struct sk_buff *skb, struct netlink_callback *cb) 11647 { 11648 struct cfg80211_registered_device *rdev; 11649 struct cfg80211_internal_bss *scan; 11650 struct wireless_dev *wdev; 11651 struct nlattr **attrbuf; 11652 int start = cb->args[2], idx = 0; 11653 bool dump_include_use_data; 11654 int err; 11655 11656 attrbuf = kcalloc(NUM_NL80211_ATTR, sizeof(*attrbuf), GFP_KERNEL); 11657 if (!attrbuf) 11658 return -ENOMEM; 11659 11660 err = nl80211_prepare_wdev_dump(cb, &rdev, &wdev, attrbuf); 11661 if (err) { 11662 kfree(attrbuf); 11663 return err; 11664 } 11665 /* nl80211_prepare_wdev_dump acquired it in the successful case */ 11666 __acquire(&rdev->wiphy.mtx); 11667 11668 dump_include_use_data = 11669 attrbuf[NL80211_ATTR_BSS_DUMP_INCLUDE_USE_DATA]; 11670 kfree(attrbuf); 11671 11672 spin_lock_bh(&rdev->bss_lock); 11673 11674 /* 11675 * dump_scan will be called multiple times to break up the scan results 11676 * into multiple messages. It is unlikely that any more bss-es will be 11677 * expired after the first call, so only call only call this on the 11678 * first dump_scan invocation. 11679 */ 11680 if (start == 0) 11681 cfg80211_bss_expire(rdev); 11682 11683 cb->seq = rdev->bss_generation; 11684 11685 list_for_each_entry(scan, &rdev->bss_list, list) { 11686 if (++idx <= start) 11687 continue; 11688 if (!dump_include_use_data && 11689 !(scan->pub.use_for & NL80211_BSS_USE_FOR_NORMAL)) 11690 continue; 11691 if (nl80211_send_bss(skb, cb, 11692 cb->nlh->nlmsg_seq, NLM_F_MULTI, 11693 rdev, wdev, scan) < 0) { 11694 idx--; 11695 break; 11696 } 11697 } 11698 11699 spin_unlock_bh(&rdev->bss_lock); 11700 11701 cb->args[2] = idx; 11702 wiphy_unlock(&rdev->wiphy); 11703 11704 return skb->len; 11705 } 11706 11707 static int nl80211_send_survey(struct sk_buff *msg, u32 portid, u32 seq, 11708 int flags, struct net_device *dev, 11709 bool allow_radio_stats, 11710 struct survey_info *survey) 11711 { 11712 void *hdr; 11713 struct nlattr *infoattr; 11714 11715 /* skip radio stats if userspace didn't request them */ 11716 if (!survey->channel && !allow_radio_stats) 11717 return 0; 11718 11719 hdr = nl80211hdr_put(msg, portid, seq, flags, 11720 NL80211_CMD_NEW_SURVEY_RESULTS); 11721 if (!hdr) 11722 return -ENOMEM; 11723 11724 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex)) 11725 goto nla_put_failure; 11726 11727 infoattr = nla_nest_start_noflag(msg, NL80211_ATTR_SURVEY_INFO); 11728 if (!infoattr) 11729 goto nla_put_failure; 11730 11731 if (survey->channel && 11732 nla_put_u32(msg, NL80211_SURVEY_INFO_FREQUENCY, 11733 survey->channel->center_freq)) 11734 goto nla_put_failure; 11735 11736 if (survey->channel && survey->channel->freq_offset && 11737 nla_put_u32(msg, NL80211_SURVEY_INFO_FREQUENCY_OFFSET, 11738 survey->channel->freq_offset)) 11739 goto nla_put_failure; 11740 11741 if ((survey->filled & SURVEY_INFO_NOISE_DBM) && 11742 nla_put_u8(msg, NL80211_SURVEY_INFO_NOISE, survey->noise)) 11743 goto nla_put_failure; 11744 if ((survey->filled & SURVEY_INFO_IN_USE) && 11745 nla_put_flag(msg, NL80211_SURVEY_INFO_IN_USE)) 11746 goto nla_put_failure; 11747 if ((survey->filled & SURVEY_INFO_TIME) && 11748 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME, 11749 survey->time, NL80211_SURVEY_INFO_PAD)) 11750 goto nla_put_failure; 11751 if ((survey->filled & SURVEY_INFO_TIME_BUSY) && 11752 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_BUSY, 11753 survey->time_busy, NL80211_SURVEY_INFO_PAD)) 11754 goto nla_put_failure; 11755 if ((survey->filled & SURVEY_INFO_TIME_EXT_BUSY) && 11756 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_EXT_BUSY, 11757 survey->time_ext_busy, NL80211_SURVEY_INFO_PAD)) 11758 goto nla_put_failure; 11759 if ((survey->filled & SURVEY_INFO_TIME_RX) && 11760 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_RX, 11761 survey->time_rx, NL80211_SURVEY_INFO_PAD)) 11762 goto nla_put_failure; 11763 if ((survey->filled & SURVEY_INFO_TIME_TX) && 11764 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_TX, 11765 survey->time_tx, NL80211_SURVEY_INFO_PAD)) 11766 goto nla_put_failure; 11767 if ((survey->filled & SURVEY_INFO_TIME_SCAN) && 11768 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_SCAN, 11769 survey->time_scan, NL80211_SURVEY_INFO_PAD)) 11770 goto nla_put_failure; 11771 if ((survey->filled & SURVEY_INFO_TIME_BSS_RX) && 11772 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_BSS_RX, 11773 survey->time_bss_rx, NL80211_SURVEY_INFO_PAD)) 11774 goto nla_put_failure; 11775 11776 nla_nest_end(msg, infoattr); 11777 11778 genlmsg_end(msg, hdr); 11779 return 0; 11780 11781 nla_put_failure: 11782 genlmsg_cancel(msg, hdr); 11783 return -EMSGSIZE; 11784 } 11785 11786 static int nl80211_dump_survey(struct sk_buff *skb, struct netlink_callback *cb) 11787 { 11788 struct nlattr **attrbuf; 11789 struct survey_info survey; 11790 struct cfg80211_registered_device *rdev; 11791 struct wireless_dev *wdev; 11792 int survey_idx = cb->args[2]; 11793 int res; 11794 bool radio_stats; 11795 11796 attrbuf = kcalloc(NUM_NL80211_ATTR, sizeof(*attrbuf), GFP_KERNEL); 11797 if (!attrbuf) 11798 return -ENOMEM; 11799 11800 res = nl80211_prepare_wdev_dump(cb, &rdev, &wdev, attrbuf); 11801 if (res) { 11802 kfree(attrbuf); 11803 return res; 11804 } 11805 /* nl80211_prepare_wdev_dump acquired it in the successful case */ 11806 __acquire(&rdev->wiphy.mtx); 11807 11808 /* prepare_wdev_dump parsed the attributes */ 11809 radio_stats = attrbuf[NL80211_ATTR_SURVEY_RADIO_STATS]; 11810 11811 if (!wdev->netdev) { 11812 res = -EINVAL; 11813 goto out_err; 11814 } 11815 11816 if (!rdev->ops->dump_survey) { 11817 res = -EOPNOTSUPP; 11818 goto out_err; 11819 } 11820 11821 while (1) { 11822 res = rdev_dump_survey(rdev, wdev->netdev, survey_idx, &survey); 11823 if (res == -ENOENT) 11824 break; 11825 if (res) 11826 goto out_err; 11827 11828 /* don't send disabled channels, but do send non-channel data */ 11829 if (survey.channel && 11830 survey.channel->flags & IEEE80211_CHAN_DISABLED) { 11831 survey_idx++; 11832 continue; 11833 } 11834 11835 if (nl80211_send_survey(skb, 11836 NETLINK_CB(cb->skb).portid, 11837 cb->nlh->nlmsg_seq, NLM_F_MULTI, 11838 wdev->netdev, radio_stats, &survey) < 0) 11839 goto out; 11840 survey_idx++; 11841 } 11842 11843 out: 11844 cb->args[2] = survey_idx; 11845 res = skb->len; 11846 out_err: 11847 kfree(attrbuf); 11848 wiphy_unlock(&rdev->wiphy); 11849 return res; 11850 } 11851 11852 static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info) 11853 { 11854 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 11855 struct net_device *dev = info->user_ptr[1]; 11856 struct ieee80211_channel *chan; 11857 const u8 *bssid, *ssid; 11858 int err, ssid_len; 11859 enum nl80211_auth_type auth_type; 11860 struct key_parse key; 11861 bool local_state_change; 11862 struct cfg80211_auth_request req = {}; 11863 u32 freq; 11864 11865 if (!info->attrs[NL80211_ATTR_MAC]) 11866 return -EINVAL; 11867 11868 if (!info->attrs[NL80211_ATTR_AUTH_TYPE]) 11869 return -EINVAL; 11870 11871 if (!info->attrs[NL80211_ATTR_SSID]) 11872 return -EINVAL; 11873 11874 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ]) 11875 return -EINVAL; 11876 11877 err = nl80211_parse_key(info, &key); 11878 if (err) 11879 return err; 11880 11881 if (key.idx >= 0) { 11882 if (key.type != -1 && key.type != NL80211_KEYTYPE_GROUP) 11883 return -EINVAL; 11884 if (!key.p.key || !key.p.key_len) 11885 return -EINVAL; 11886 if ((key.p.cipher != WLAN_CIPHER_SUITE_WEP40 || 11887 key.p.key_len != WLAN_KEY_LEN_WEP40) && 11888 (key.p.cipher != WLAN_CIPHER_SUITE_WEP104 || 11889 key.p.key_len != WLAN_KEY_LEN_WEP104)) 11890 return -EINVAL; 11891 if (key.idx > 3) 11892 return -EINVAL; 11893 } else { 11894 key.p.key_len = 0; 11895 key.p.key = NULL; 11896 } 11897 11898 if (key.idx >= 0) { 11899 int i; 11900 bool ok = false; 11901 11902 for (i = 0; i < rdev->wiphy.n_cipher_suites; i++) { 11903 if (key.p.cipher == rdev->wiphy.cipher_suites[i]) { 11904 ok = true; 11905 break; 11906 } 11907 } 11908 if (!ok) 11909 return -EINVAL; 11910 } 11911 11912 if (!rdev->ops->auth) 11913 return -EOPNOTSUPP; 11914 11915 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION && 11916 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) 11917 return -EOPNOTSUPP; 11918 11919 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]); 11920 freq = MHZ_TO_KHZ(nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ])); 11921 if (info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET]) 11922 freq += 11923 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET]); 11924 11925 chan = nl80211_get_valid_chan(&rdev->wiphy, freq); 11926 if (!chan) 11927 return -EINVAL; 11928 11929 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]); 11930 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]); 11931 11932 if (info->attrs[NL80211_ATTR_IE]) { 11933 req.ie = nla_data(info->attrs[NL80211_ATTR_IE]); 11934 req.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); 11935 } 11936 11937 if (info->attrs[NL80211_ATTR_SUPPORTED_SELECTORS]) { 11938 req.supported_selectors = 11939 nla_data(info->attrs[NL80211_ATTR_SUPPORTED_SELECTORS]); 11940 req.supported_selectors_len = 11941 nla_len(info->attrs[NL80211_ATTR_SUPPORTED_SELECTORS]); 11942 } 11943 11944 auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]); 11945 if (!nl80211_valid_auth_type(rdev, auth_type, NL80211_CMD_AUTHENTICATE)) 11946 return -EINVAL; 11947 11948 if ((auth_type == NL80211_AUTHTYPE_SAE || 11949 auth_type == NL80211_AUTHTYPE_FILS_SK || 11950 auth_type == NL80211_AUTHTYPE_FILS_SK_PFS || 11951 auth_type == NL80211_AUTHTYPE_FILS_PK) && 11952 !info->attrs[NL80211_ATTR_AUTH_DATA]) 11953 return -EINVAL; 11954 11955 if (info->attrs[NL80211_ATTR_AUTH_DATA]) { 11956 if (auth_type != NL80211_AUTHTYPE_SAE && 11957 auth_type != NL80211_AUTHTYPE_FILS_SK && 11958 auth_type != NL80211_AUTHTYPE_FILS_SK_PFS && 11959 auth_type != NL80211_AUTHTYPE_FILS_PK) 11960 return -EINVAL; 11961 req.auth_data = nla_data(info->attrs[NL80211_ATTR_AUTH_DATA]); 11962 req.auth_data_len = nla_len(info->attrs[NL80211_ATTR_AUTH_DATA]); 11963 } 11964 11965 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE]; 11966 11967 /* 11968 * Since we no longer track auth state, ignore 11969 * requests to only change local state. 11970 */ 11971 if (local_state_change) 11972 return 0; 11973 11974 req.auth_type = auth_type; 11975 req.key = key.p.key; 11976 req.key_len = key.p.key_len; 11977 req.key_idx = key.idx; 11978 req.link_id = nl80211_link_id_or_invalid(info->attrs); 11979 if (req.link_id >= 0) { 11980 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_MLO)) 11981 return -EINVAL; 11982 if (!info->attrs[NL80211_ATTR_MLD_ADDR]) 11983 return -EINVAL; 11984 req.ap_mld_addr = nla_data(info->attrs[NL80211_ATTR_MLD_ADDR]); 11985 if (!is_valid_ether_addr(req.ap_mld_addr)) 11986 return -EINVAL; 11987 } 11988 11989 req.bss = cfg80211_get_bss(&rdev->wiphy, chan, bssid, ssid, ssid_len, 11990 IEEE80211_BSS_TYPE_ESS, 11991 IEEE80211_PRIVACY_ANY); 11992 if (!req.bss) 11993 return -ENOENT; 11994 11995 err = cfg80211_mlme_auth(rdev, dev, &req); 11996 11997 cfg80211_put_bss(&rdev->wiphy, req.bss); 11998 11999 return err; 12000 } 12001 12002 static int validate_pae_over_nl80211(struct cfg80211_registered_device *rdev, 12003 struct genl_info *info) 12004 { 12005 if (!info->attrs[NL80211_ATTR_SOCKET_OWNER]) { 12006 GENL_SET_ERR_MSG(info, "SOCKET_OWNER not set"); 12007 return -EINVAL; 12008 } 12009 12010 if (!rdev->ops->tx_control_port || 12011 !wiphy_ext_feature_isset(&rdev->wiphy, 12012 NL80211_EXT_FEATURE_CONTROL_PORT_OVER_NL80211)) 12013 return -EOPNOTSUPP; 12014 12015 return 0; 12016 } 12017 12018 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev, 12019 struct genl_info *info, 12020 struct cfg80211_crypto_settings *settings, 12021 int cipher_limit) 12022 { 12023 memset(settings, 0, sizeof(*settings)); 12024 12025 settings->control_port = info->attrs[NL80211_ATTR_CONTROL_PORT]; 12026 12027 if (info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) { 12028 u16 proto; 12029 12030 proto = nla_get_u16( 12031 info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]); 12032 settings->control_port_ethertype = cpu_to_be16(proto); 12033 if (!(rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) && 12034 proto != ETH_P_PAE) 12035 return -EINVAL; 12036 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT]) 12037 settings->control_port_no_encrypt = true; 12038 } else 12039 settings->control_port_ethertype = cpu_to_be16(ETH_P_PAE); 12040 12041 if (info->attrs[NL80211_ATTR_CONTROL_PORT_OVER_NL80211]) { 12042 int r = validate_pae_over_nl80211(rdev, info); 12043 12044 if (r < 0) 12045 return r; 12046 12047 settings->control_port_over_nl80211 = true; 12048 12049 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_PREAUTH]) 12050 settings->control_port_no_preauth = true; 12051 } 12052 12053 if (info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]) { 12054 void *data; 12055 int len, i; 12056 12057 data = nla_data(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]); 12058 len = nla_len(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]); 12059 settings->n_ciphers_pairwise = len / sizeof(u32); 12060 12061 if (len % sizeof(u32)) 12062 return -EINVAL; 12063 12064 if (settings->n_ciphers_pairwise > cipher_limit) 12065 return -EINVAL; 12066 12067 memcpy(settings->ciphers_pairwise, data, len); 12068 12069 for (i = 0; i < settings->n_ciphers_pairwise; i++) 12070 if (!cfg80211_supported_cipher_suite( 12071 &rdev->wiphy, 12072 settings->ciphers_pairwise[i])) 12073 return -EINVAL; 12074 } 12075 12076 if (info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]) { 12077 settings->cipher_group = 12078 nla_get_u32(info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]); 12079 if (!cfg80211_supported_cipher_suite(&rdev->wiphy, 12080 settings->cipher_group)) 12081 return -EINVAL; 12082 } 12083 12084 if (info->attrs[NL80211_ATTR_WPA_VERSIONS]) 12085 settings->wpa_versions = 12086 nla_get_u32(info->attrs[NL80211_ATTR_WPA_VERSIONS]); 12087 12088 if (info->attrs[NL80211_ATTR_AKM_SUITES]) { 12089 void *data; 12090 int len; 12091 12092 data = nla_data(info->attrs[NL80211_ATTR_AKM_SUITES]); 12093 len = nla_len(info->attrs[NL80211_ATTR_AKM_SUITES]); 12094 settings->n_akm_suites = len / sizeof(u32); 12095 12096 if (len % sizeof(u32)) 12097 return -EINVAL; 12098 12099 if (settings->n_akm_suites > rdev->wiphy.max_num_akm_suites) 12100 return -EINVAL; 12101 12102 memcpy(settings->akm_suites, data, len); 12103 } 12104 12105 if (info->attrs[NL80211_ATTR_PMK]) { 12106 if (nla_len(info->attrs[NL80211_ATTR_PMK]) != WLAN_PMK_LEN) 12107 return -EINVAL; 12108 if (!wiphy_ext_feature_isset(&rdev->wiphy, 12109 NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_PSK) && 12110 !wiphy_ext_feature_isset(&rdev->wiphy, 12111 NL80211_EXT_FEATURE_4WAY_HANDSHAKE_AP_PSK)) 12112 return -EINVAL; 12113 settings->psk = nla_data(info->attrs[NL80211_ATTR_PMK]); 12114 } 12115 12116 if (info->attrs[NL80211_ATTR_SAE_PASSWORD]) { 12117 if (!wiphy_ext_feature_isset(&rdev->wiphy, 12118 NL80211_EXT_FEATURE_SAE_OFFLOAD) && 12119 !wiphy_ext_feature_isset(&rdev->wiphy, 12120 NL80211_EXT_FEATURE_SAE_OFFLOAD_AP)) 12121 return -EINVAL; 12122 settings->sae_pwd = 12123 nla_data(info->attrs[NL80211_ATTR_SAE_PASSWORD]); 12124 settings->sae_pwd_len = 12125 nla_len(info->attrs[NL80211_ATTR_SAE_PASSWORD]); 12126 } 12127 12128 settings->sae_pwe = 12129 nla_get_u8_default(info->attrs[NL80211_ATTR_SAE_PWE], 12130 NL80211_SAE_PWE_UNSPECIFIED); 12131 12132 return 0; 12133 } 12134 12135 static struct cfg80211_bss *nl80211_assoc_bss(struct cfg80211_registered_device *rdev, 12136 const u8 *ssid, int ssid_len, 12137 struct nlattr **attrs, 12138 int assoc_link_id, int link_id) 12139 { 12140 struct ieee80211_channel *chan; 12141 struct cfg80211_bss *bss; 12142 const u8 *bssid; 12143 u32 freq, use_for = 0; 12144 12145 if (!attrs[NL80211_ATTR_MAC] || !attrs[NL80211_ATTR_WIPHY_FREQ]) 12146 return ERR_PTR(-EINVAL); 12147 12148 bssid = nla_data(attrs[NL80211_ATTR_MAC]); 12149 12150 freq = MHZ_TO_KHZ(nla_get_u32(attrs[NL80211_ATTR_WIPHY_FREQ])); 12151 if (attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET]) 12152 freq += nla_get_u32(attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET]); 12153 12154 chan = nl80211_get_valid_chan(&rdev->wiphy, freq); 12155 if (!chan) 12156 return ERR_PTR(-EINVAL); 12157 12158 if (assoc_link_id >= 0) 12159 use_for = NL80211_BSS_USE_FOR_MLD_LINK; 12160 if (assoc_link_id == link_id) 12161 use_for |= NL80211_BSS_USE_FOR_NORMAL; 12162 12163 bss = __cfg80211_get_bss(&rdev->wiphy, chan, bssid, 12164 ssid, ssid_len, 12165 IEEE80211_BSS_TYPE_ESS, 12166 IEEE80211_PRIVACY_ANY, 12167 use_for); 12168 if (!bss) 12169 return ERR_PTR(-ENOENT); 12170 12171 return bss; 12172 } 12173 12174 static int nl80211_process_links(struct cfg80211_registered_device *rdev, 12175 struct cfg80211_assoc_link *links, 12176 int assoc_link_id, 12177 const u8 *ssid, int ssid_len, 12178 struct genl_info *info) 12179 { 12180 unsigned int attrsize = NUM_NL80211_ATTR * sizeof(struct nlattr *); 12181 struct nlattr **attrs __free(kfree) = kzalloc(attrsize, GFP_KERNEL); 12182 struct nlattr *link; 12183 unsigned int link_id; 12184 int rem, err; 12185 12186 if (!attrs) 12187 return -ENOMEM; 12188 12189 nla_for_each_nested(link, info->attrs[NL80211_ATTR_MLO_LINKS], rem) { 12190 memset(attrs, 0, attrsize); 12191 12192 nla_parse_nested(attrs, NL80211_ATTR_MAX, link, NULL, NULL); 12193 12194 if (!attrs[NL80211_ATTR_MLO_LINK_ID]) { 12195 NL_SET_BAD_ATTR(info->extack, link); 12196 return -EINVAL; 12197 } 12198 12199 link_id = nla_get_u8(attrs[NL80211_ATTR_MLO_LINK_ID]); 12200 /* cannot use the same link ID again */ 12201 if (links[link_id].bss) { 12202 NL_SET_BAD_ATTR(info->extack, link); 12203 return -EINVAL; 12204 } 12205 links[link_id].bss = 12206 nl80211_assoc_bss(rdev, ssid, ssid_len, attrs, 12207 assoc_link_id, link_id); 12208 if (IS_ERR(links[link_id].bss)) { 12209 err = PTR_ERR(links[link_id].bss); 12210 links[link_id].bss = NULL; 12211 NL_SET_ERR_MSG_ATTR(info->extack, link, 12212 "Error fetching BSS for link"); 12213 return err; 12214 } 12215 12216 if (attrs[NL80211_ATTR_IE]) { 12217 links[link_id].elems = nla_data(attrs[NL80211_ATTR_IE]); 12218 links[link_id].elems_len = 12219 nla_len(attrs[NL80211_ATTR_IE]); 12220 12221 if (cfg80211_find_elem(WLAN_EID_FRAGMENT, 12222 links[link_id].elems, 12223 links[link_id].elems_len)) { 12224 NL_SET_ERR_MSG_ATTR(info->extack, 12225 attrs[NL80211_ATTR_IE], 12226 "cannot deal with fragmentation"); 12227 return -EINVAL; 12228 } 12229 12230 if (cfg80211_find_ext_elem(WLAN_EID_EXT_NON_INHERITANCE, 12231 links[link_id].elems, 12232 links[link_id].elems_len)) { 12233 NL_SET_ERR_MSG_ATTR(info->extack, 12234 attrs[NL80211_ATTR_IE], 12235 "cannot deal with non-inheritance"); 12236 return -EINVAL; 12237 } 12238 } 12239 12240 links[link_id].disabled = 12241 nla_get_flag(attrs[NL80211_ATTR_MLO_LINK_DISABLED]); 12242 } 12243 12244 return 0; 12245 } 12246 12247 static int nl80211_associate(struct sk_buff *skb, struct genl_info *info) 12248 { 12249 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 12250 struct net_device *dev = info->user_ptr[1]; 12251 struct cfg80211_assoc_request req = {}; 12252 const u8 *ap_addr, *ssid; 12253 unsigned int link_id; 12254 int err, ssid_len; 12255 12256 if (dev->ieee80211_ptr->conn_owner_nlportid && 12257 dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid) 12258 return -EPERM; 12259 12260 if (!info->attrs[NL80211_ATTR_SSID]) 12261 return -EINVAL; 12262 12263 if (!rdev->ops->assoc) 12264 return -EOPNOTSUPP; 12265 12266 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION && 12267 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) 12268 return -EOPNOTSUPP; 12269 12270 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]); 12271 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]); 12272 12273 if (info->attrs[NL80211_ATTR_IE]) { 12274 req.ie = nla_data(info->attrs[NL80211_ATTR_IE]); 12275 req.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); 12276 12277 if (cfg80211_find_ext_elem(WLAN_EID_EXT_NON_INHERITANCE, 12278 req.ie, req.ie_len)) { 12279 NL_SET_ERR_MSG_ATTR(info->extack, 12280 info->attrs[NL80211_ATTR_IE], 12281 "non-inheritance makes no sense"); 12282 return -EINVAL; 12283 } 12284 } 12285 12286 if (info->attrs[NL80211_ATTR_USE_MFP]) { 12287 enum nl80211_mfp mfp = 12288 nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]); 12289 if (mfp == NL80211_MFP_REQUIRED) 12290 req.use_mfp = true; 12291 else if (mfp != NL80211_MFP_NO) 12292 return -EINVAL; 12293 } 12294 12295 if (info->attrs[NL80211_ATTR_PREV_BSSID]) 12296 req.prev_bssid = nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]); 12297 12298 if (info->attrs[NL80211_ATTR_SUPPORTED_SELECTORS]) { 12299 req.supported_selectors = 12300 nla_data(info->attrs[NL80211_ATTR_SUPPORTED_SELECTORS]); 12301 req.supported_selectors_len = 12302 nla_len(info->attrs[NL80211_ATTR_SUPPORTED_SELECTORS]); 12303 } 12304 12305 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT])) 12306 req.flags |= ASSOC_REQ_DISABLE_HT; 12307 12308 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) 12309 memcpy(&req.ht_capa_mask, 12310 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]), 12311 sizeof(req.ht_capa_mask)); 12312 12313 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) { 12314 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) 12315 return -EINVAL; 12316 memcpy(&req.ht_capa, 12317 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]), 12318 sizeof(req.ht_capa)); 12319 } 12320 12321 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT])) 12322 req.flags |= ASSOC_REQ_DISABLE_VHT; 12323 12324 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HE])) 12325 req.flags |= ASSOC_REQ_DISABLE_HE; 12326 12327 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_EHT])) 12328 req.flags |= ASSOC_REQ_DISABLE_EHT; 12329 12330 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]) 12331 memcpy(&req.vht_capa_mask, 12332 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]), 12333 sizeof(req.vht_capa_mask)); 12334 12335 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) { 12336 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]) 12337 return -EINVAL; 12338 memcpy(&req.vht_capa, 12339 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]), 12340 sizeof(req.vht_capa)); 12341 } 12342 12343 if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) { 12344 if (!((rdev->wiphy.features & 12345 NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) && 12346 (rdev->wiphy.features & NL80211_FEATURE_QUIET)) && 12347 !wiphy_ext_feature_isset(&rdev->wiphy, 12348 NL80211_EXT_FEATURE_RRM)) 12349 return -EINVAL; 12350 req.flags |= ASSOC_REQ_USE_RRM; 12351 } 12352 12353 if (info->attrs[NL80211_ATTR_FILS_KEK]) { 12354 req.fils_kek = nla_data(info->attrs[NL80211_ATTR_FILS_KEK]); 12355 req.fils_kek_len = nla_len(info->attrs[NL80211_ATTR_FILS_KEK]); 12356 if (!info->attrs[NL80211_ATTR_FILS_NONCES]) 12357 return -EINVAL; 12358 req.fils_nonces = 12359 nla_data(info->attrs[NL80211_ATTR_FILS_NONCES]); 12360 } 12361 12362 if (info->attrs[NL80211_ATTR_S1G_CAPABILITY_MASK]) { 12363 if (!info->attrs[NL80211_ATTR_S1G_CAPABILITY]) 12364 return -EINVAL; 12365 memcpy(&req.s1g_capa_mask, 12366 nla_data(info->attrs[NL80211_ATTR_S1G_CAPABILITY_MASK]), 12367 sizeof(req.s1g_capa_mask)); 12368 } 12369 12370 if (info->attrs[NL80211_ATTR_S1G_CAPABILITY]) { 12371 if (!info->attrs[NL80211_ATTR_S1G_CAPABILITY_MASK]) 12372 return -EINVAL; 12373 memcpy(&req.s1g_capa, 12374 nla_data(info->attrs[NL80211_ATTR_S1G_CAPABILITY]), 12375 sizeof(req.s1g_capa)); 12376 } 12377 12378 if (nla_get_flag(info->attrs[NL80211_ATTR_ASSOC_SPP_AMSDU])) { 12379 if (!wiphy_ext_feature_isset(&rdev->wiphy, 12380 NL80211_EXT_FEATURE_SPP_AMSDU_SUPPORT)) { 12381 GENL_SET_ERR_MSG(info, "SPP A-MSDUs not supported"); 12382 return -EINVAL; 12383 } 12384 req.flags |= ASSOC_REQ_SPP_AMSDU; 12385 } 12386 12387 req.link_id = nl80211_link_id_or_invalid(info->attrs); 12388 12389 if (info->attrs[NL80211_ATTR_MLO_LINKS]) { 12390 if (req.link_id < 0) 12391 return -EINVAL; 12392 12393 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_MLO)) 12394 return -EINVAL; 12395 12396 if (info->attrs[NL80211_ATTR_MAC] || 12397 info->attrs[NL80211_ATTR_WIPHY_FREQ] || 12398 !info->attrs[NL80211_ATTR_MLD_ADDR]) 12399 return -EINVAL; 12400 12401 req.ap_mld_addr = nla_data(info->attrs[NL80211_ATTR_MLD_ADDR]); 12402 ap_addr = req.ap_mld_addr; 12403 12404 err = nl80211_process_links(rdev, req.links, req.link_id, 12405 ssid, ssid_len, info); 12406 if (err) 12407 goto free; 12408 12409 if (!req.links[req.link_id].bss) { 12410 err = -EINVAL; 12411 goto free; 12412 } 12413 12414 if (req.links[req.link_id].elems_len) { 12415 GENL_SET_ERR_MSG(info, 12416 "cannot have per-link elems on assoc link"); 12417 err = -EINVAL; 12418 goto free; 12419 } 12420 12421 if (req.links[req.link_id].disabled) { 12422 GENL_SET_ERR_MSG(info, 12423 "cannot have assoc link disabled"); 12424 err = -EINVAL; 12425 goto free; 12426 } 12427 12428 if (info->attrs[NL80211_ATTR_ASSOC_MLD_EXT_CAPA_OPS]) 12429 req.ext_mld_capa_ops = 12430 nla_get_u16(info->attrs[NL80211_ATTR_ASSOC_MLD_EXT_CAPA_OPS]); 12431 } else { 12432 if (req.link_id >= 0) 12433 return -EINVAL; 12434 12435 req.bss = nl80211_assoc_bss(rdev, ssid, ssid_len, info->attrs, 12436 -1, -1); 12437 if (IS_ERR(req.bss)) 12438 return PTR_ERR(req.bss); 12439 ap_addr = req.bss->bssid; 12440 12441 if (info->attrs[NL80211_ATTR_ASSOC_MLD_EXT_CAPA_OPS]) 12442 return -EINVAL; 12443 } 12444 12445 err = nl80211_crypto_settings(rdev, info, &req.crypto, 1); 12446 if (!err) { 12447 struct nlattr *link; 12448 int rem = 0; 12449 12450 err = cfg80211_mlme_assoc(rdev, dev, &req, 12451 info->extack); 12452 12453 if (!err && info->attrs[NL80211_ATTR_SOCKET_OWNER]) { 12454 dev->ieee80211_ptr->conn_owner_nlportid = 12455 info->snd_portid; 12456 memcpy(dev->ieee80211_ptr->disconnect_bssid, 12457 ap_addr, ETH_ALEN); 12458 } 12459 12460 /* Report error from first problematic link */ 12461 if (info->attrs[NL80211_ATTR_MLO_LINKS]) { 12462 nla_for_each_nested(link, 12463 info->attrs[NL80211_ATTR_MLO_LINKS], 12464 rem) { 12465 struct nlattr *link_id_attr = 12466 nla_find_nested(link, NL80211_ATTR_MLO_LINK_ID); 12467 12468 if (!link_id_attr) 12469 continue; 12470 12471 link_id = nla_get_u8(link_id_attr); 12472 12473 if (link_id == req.link_id) 12474 continue; 12475 12476 if (!req.links[link_id].error || 12477 WARN_ON(req.links[link_id].error > 0)) 12478 continue; 12479 12480 WARN_ON(err >= 0); 12481 12482 NL_SET_BAD_ATTR(info->extack, link); 12483 err = req.links[link_id].error; 12484 break; 12485 } 12486 } 12487 } 12488 12489 free: 12490 for (link_id = 0; link_id < ARRAY_SIZE(req.links); link_id++) 12491 cfg80211_put_bss(&rdev->wiphy, req.links[link_id].bss); 12492 cfg80211_put_bss(&rdev->wiphy, req.bss); 12493 12494 return err; 12495 } 12496 12497 static int nl80211_deauthenticate(struct sk_buff *skb, struct genl_info *info) 12498 { 12499 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 12500 struct net_device *dev = info->user_ptr[1]; 12501 const u8 *ie = NULL, *bssid; 12502 int ie_len = 0; 12503 u16 reason_code; 12504 bool local_state_change; 12505 12506 if (dev->ieee80211_ptr->conn_owner_nlportid && 12507 dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid) 12508 return -EPERM; 12509 12510 if (!info->attrs[NL80211_ATTR_MAC]) 12511 return -EINVAL; 12512 12513 if (!info->attrs[NL80211_ATTR_REASON_CODE]) 12514 return -EINVAL; 12515 12516 if (!rdev->ops->deauth) 12517 return -EOPNOTSUPP; 12518 12519 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION && 12520 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) 12521 return -EOPNOTSUPP; 12522 12523 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]); 12524 12525 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]); 12526 if (reason_code == 0) { 12527 /* Reason Code 0 is reserved */ 12528 return -EINVAL; 12529 } 12530 12531 if (info->attrs[NL80211_ATTR_IE]) { 12532 ie = nla_data(info->attrs[NL80211_ATTR_IE]); 12533 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); 12534 } 12535 12536 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE]; 12537 12538 return cfg80211_mlme_deauth(rdev, dev, bssid, ie, ie_len, reason_code, 12539 local_state_change); 12540 } 12541 12542 static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info) 12543 { 12544 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 12545 struct net_device *dev = info->user_ptr[1]; 12546 const u8 *ie = NULL, *bssid; 12547 int ie_len = 0; 12548 u16 reason_code; 12549 bool local_state_change; 12550 12551 if (dev->ieee80211_ptr->conn_owner_nlportid && 12552 dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid) 12553 return -EPERM; 12554 12555 if (!info->attrs[NL80211_ATTR_MAC]) 12556 return -EINVAL; 12557 12558 if (!info->attrs[NL80211_ATTR_REASON_CODE]) 12559 return -EINVAL; 12560 12561 if (!rdev->ops->disassoc) 12562 return -EOPNOTSUPP; 12563 12564 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION && 12565 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) 12566 return -EOPNOTSUPP; 12567 12568 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]); 12569 12570 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]); 12571 if (reason_code == 0) { 12572 /* Reason Code 0 is reserved */ 12573 return -EINVAL; 12574 } 12575 12576 if (info->attrs[NL80211_ATTR_IE]) { 12577 ie = nla_data(info->attrs[NL80211_ATTR_IE]); 12578 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); 12579 } 12580 12581 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE]; 12582 12583 return cfg80211_mlme_disassoc(rdev, dev, bssid, ie, ie_len, reason_code, 12584 local_state_change); 12585 } 12586 12587 static bool 12588 nl80211_parse_mcast_rate(struct cfg80211_registered_device *rdev, 12589 int mcast_rate[NUM_NL80211_BANDS], 12590 int rateval) 12591 { 12592 struct wiphy *wiphy = &rdev->wiphy; 12593 bool found = false; 12594 int band, i; 12595 12596 for (band = 0; band < NUM_NL80211_BANDS; band++) { 12597 struct ieee80211_supported_band *sband; 12598 12599 sband = wiphy->bands[band]; 12600 if (!sband) 12601 continue; 12602 12603 for (i = 0; i < sband->n_bitrates; i++) { 12604 if (sband->bitrates[i].bitrate == rateval) { 12605 mcast_rate[band] = i + 1; 12606 found = true; 12607 break; 12608 } 12609 } 12610 } 12611 12612 return found; 12613 } 12614 12615 static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info) 12616 { 12617 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 12618 struct net_device *dev = info->user_ptr[1]; 12619 struct cfg80211_ibss_params ibss; 12620 struct wiphy *wiphy; 12621 struct cfg80211_cached_keys *connkeys = NULL; 12622 int err; 12623 12624 memset(&ibss, 0, sizeof(ibss)); 12625 12626 if (!info->attrs[NL80211_ATTR_SSID] || 12627 !nla_len(info->attrs[NL80211_ATTR_SSID])) 12628 return -EINVAL; 12629 12630 ibss.beacon_interval = 100; 12631 12632 if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) 12633 ibss.beacon_interval = 12634 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]); 12635 12636 err = cfg80211_validate_beacon_int(rdev, NL80211_IFTYPE_ADHOC, 12637 ibss.beacon_interval); 12638 if (err) 12639 return err; 12640 12641 if (!rdev->ops->join_ibss) 12642 return -EOPNOTSUPP; 12643 12644 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC) 12645 return -EOPNOTSUPP; 12646 12647 wiphy = &rdev->wiphy; 12648 12649 if (info->attrs[NL80211_ATTR_MAC]) { 12650 ibss.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]); 12651 12652 if (!is_valid_ether_addr(ibss.bssid)) 12653 return -EINVAL; 12654 } 12655 ibss.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]); 12656 ibss.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]); 12657 12658 if (info->attrs[NL80211_ATTR_IE]) { 12659 ibss.ie = nla_data(info->attrs[NL80211_ATTR_IE]); 12660 ibss.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); 12661 } 12662 12663 err = nl80211_parse_chandef(rdev, info, &ibss.chandef); 12664 if (err) 12665 return err; 12666 12667 if (!cfg80211_reg_can_beacon(&rdev->wiphy, &ibss.chandef, 12668 NL80211_IFTYPE_ADHOC)) 12669 return -EINVAL; 12670 12671 switch (ibss.chandef.width) { 12672 case NL80211_CHAN_WIDTH_5: 12673 case NL80211_CHAN_WIDTH_10: 12674 case NL80211_CHAN_WIDTH_20_NOHT: 12675 break; 12676 case NL80211_CHAN_WIDTH_20: 12677 case NL80211_CHAN_WIDTH_40: 12678 if (!(rdev->wiphy.features & NL80211_FEATURE_HT_IBSS)) 12679 return -EINVAL; 12680 break; 12681 case NL80211_CHAN_WIDTH_80: 12682 case NL80211_CHAN_WIDTH_80P80: 12683 case NL80211_CHAN_WIDTH_160: 12684 if (!(rdev->wiphy.features & NL80211_FEATURE_HT_IBSS)) 12685 return -EINVAL; 12686 if (!wiphy_ext_feature_isset(&rdev->wiphy, 12687 NL80211_EXT_FEATURE_VHT_IBSS)) 12688 return -EINVAL; 12689 break; 12690 case NL80211_CHAN_WIDTH_320: 12691 return -EINVAL; 12692 default: 12693 return -EINVAL; 12694 } 12695 12696 ibss.channel_fixed = !!info->attrs[NL80211_ATTR_FREQ_FIXED]; 12697 ibss.privacy = !!info->attrs[NL80211_ATTR_PRIVACY]; 12698 12699 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) { 12700 u8 *rates = 12701 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]); 12702 int n_rates = 12703 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]); 12704 struct ieee80211_supported_band *sband = 12705 wiphy->bands[ibss.chandef.chan->band]; 12706 12707 err = ieee80211_get_ratemask(sband, rates, n_rates, 12708 &ibss.basic_rates); 12709 if (err) 12710 return err; 12711 } 12712 12713 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) 12714 memcpy(&ibss.ht_capa_mask, 12715 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]), 12716 sizeof(ibss.ht_capa_mask)); 12717 12718 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) { 12719 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) 12720 return -EINVAL; 12721 memcpy(&ibss.ht_capa, 12722 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]), 12723 sizeof(ibss.ht_capa)); 12724 } 12725 12726 if (info->attrs[NL80211_ATTR_MCAST_RATE] && 12727 !nl80211_parse_mcast_rate(rdev, ibss.mcast_rate, 12728 nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE]))) 12729 return -EINVAL; 12730 12731 if (ibss.privacy && info->attrs[NL80211_ATTR_KEYS]) { 12732 bool no_ht = false; 12733 12734 connkeys = nl80211_parse_connkeys(rdev, info, &no_ht); 12735 if (IS_ERR(connkeys)) 12736 return PTR_ERR(connkeys); 12737 12738 if ((ibss.chandef.width != NL80211_CHAN_WIDTH_20_NOHT) && 12739 no_ht) { 12740 kfree_sensitive(connkeys); 12741 return -EINVAL; 12742 } 12743 } 12744 12745 ibss.control_port = 12746 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT]); 12747 12748 if (info->attrs[NL80211_ATTR_CONTROL_PORT_OVER_NL80211]) { 12749 int r = validate_pae_over_nl80211(rdev, info); 12750 12751 if (r < 0) { 12752 kfree_sensitive(connkeys); 12753 return r; 12754 } 12755 12756 ibss.control_port_over_nl80211 = true; 12757 } 12758 12759 ibss.userspace_handles_dfs = 12760 nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS]); 12761 12762 err = __cfg80211_join_ibss(rdev, dev, &ibss, connkeys); 12763 if (err) 12764 kfree_sensitive(connkeys); 12765 else if (info->attrs[NL80211_ATTR_SOCKET_OWNER]) 12766 dev->ieee80211_ptr->conn_owner_nlportid = info->snd_portid; 12767 12768 return err; 12769 } 12770 12771 static int nl80211_leave_ibss(struct sk_buff *skb, struct genl_info *info) 12772 { 12773 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 12774 struct net_device *dev = info->user_ptr[1]; 12775 12776 if (!rdev->ops->leave_ibss) 12777 return -EOPNOTSUPP; 12778 12779 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC) 12780 return -EOPNOTSUPP; 12781 12782 return cfg80211_leave_ibss(rdev, dev, false); 12783 } 12784 12785 static int nl80211_set_mcast_rate(struct sk_buff *skb, struct genl_info *info) 12786 { 12787 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 12788 struct net_device *dev = info->user_ptr[1]; 12789 int mcast_rate[NUM_NL80211_BANDS]; 12790 u32 nla_rate; 12791 12792 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC && 12793 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT && 12794 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_OCB) 12795 return -EOPNOTSUPP; 12796 12797 if (!rdev->ops->set_mcast_rate) 12798 return -EOPNOTSUPP; 12799 12800 memset(mcast_rate, 0, sizeof(mcast_rate)); 12801 12802 if (!info->attrs[NL80211_ATTR_MCAST_RATE]) 12803 return -EINVAL; 12804 12805 nla_rate = nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE]); 12806 if (!nl80211_parse_mcast_rate(rdev, mcast_rate, nla_rate)) 12807 return -EINVAL; 12808 12809 return rdev_set_mcast_rate(rdev, dev, mcast_rate); 12810 } 12811 12812 static struct sk_buff * 12813 __cfg80211_alloc_vendor_skb(struct cfg80211_registered_device *rdev, 12814 struct wireless_dev *wdev, int approxlen, 12815 u32 portid, u32 seq, enum nl80211_commands cmd, 12816 enum nl80211_attrs attr, 12817 const struct nl80211_vendor_cmd_info *info, 12818 gfp_t gfp) 12819 { 12820 struct sk_buff *skb; 12821 void *hdr; 12822 struct nlattr *data; 12823 12824 skb = nlmsg_new(approxlen + 100, gfp); 12825 if (!skb) 12826 return NULL; 12827 12828 hdr = nl80211hdr_put(skb, portid, seq, 0, cmd); 12829 if (!hdr) { 12830 kfree_skb(skb); 12831 return NULL; 12832 } 12833 12834 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx)) 12835 goto nla_put_failure; 12836 12837 if (info) { 12838 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_ID, 12839 info->vendor_id)) 12840 goto nla_put_failure; 12841 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_SUBCMD, 12842 info->subcmd)) 12843 goto nla_put_failure; 12844 } 12845 12846 if (wdev) { 12847 if (nla_put_u64_64bit(skb, NL80211_ATTR_WDEV, 12848 wdev_id(wdev), NL80211_ATTR_PAD)) 12849 goto nla_put_failure; 12850 if (wdev->netdev && 12851 nla_put_u32(skb, NL80211_ATTR_IFINDEX, 12852 wdev->netdev->ifindex)) 12853 goto nla_put_failure; 12854 } 12855 12856 data = nla_nest_start_noflag(skb, attr); 12857 if (!data) 12858 goto nla_put_failure; 12859 12860 ((void **)skb->cb)[0] = rdev; 12861 ((void **)skb->cb)[1] = hdr; 12862 ((void **)skb->cb)[2] = data; 12863 12864 return skb; 12865 12866 nla_put_failure: 12867 kfree_skb(skb); 12868 return NULL; 12869 } 12870 12871 struct sk_buff *__cfg80211_alloc_event_skb(struct wiphy *wiphy, 12872 struct wireless_dev *wdev, 12873 enum nl80211_commands cmd, 12874 enum nl80211_attrs attr, 12875 unsigned int portid, 12876 int vendor_event_idx, 12877 int approxlen, gfp_t gfp) 12878 { 12879 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 12880 const struct nl80211_vendor_cmd_info *info; 12881 12882 switch (cmd) { 12883 case NL80211_CMD_TESTMODE: 12884 if (WARN_ON(vendor_event_idx != -1)) 12885 return NULL; 12886 info = NULL; 12887 break; 12888 case NL80211_CMD_VENDOR: 12889 if (WARN_ON(vendor_event_idx < 0 || 12890 vendor_event_idx >= wiphy->n_vendor_events)) 12891 return NULL; 12892 info = &wiphy->vendor_events[vendor_event_idx]; 12893 break; 12894 default: 12895 WARN_ON(1); 12896 return NULL; 12897 } 12898 12899 return __cfg80211_alloc_vendor_skb(rdev, wdev, approxlen, portid, 0, 12900 cmd, attr, info, gfp); 12901 } 12902 EXPORT_SYMBOL(__cfg80211_alloc_event_skb); 12903 12904 void __cfg80211_send_event_skb(struct sk_buff *skb, gfp_t gfp) 12905 { 12906 struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0]; 12907 void *hdr = ((void **)skb->cb)[1]; 12908 struct nlmsghdr *nlhdr = nlmsg_hdr(skb); 12909 struct nlattr *data = ((void **)skb->cb)[2]; 12910 enum nl80211_multicast_groups mcgrp = NL80211_MCGRP_TESTMODE; 12911 12912 /* clear CB data for netlink core to own from now on */ 12913 memset(skb->cb, 0, sizeof(skb->cb)); 12914 12915 nla_nest_end(skb, data); 12916 genlmsg_end(skb, hdr); 12917 12918 if (nlhdr->nlmsg_pid) { 12919 genlmsg_unicast(wiphy_net(&rdev->wiphy), skb, 12920 nlhdr->nlmsg_pid); 12921 } else { 12922 if (data->nla_type == NL80211_ATTR_VENDOR_DATA) 12923 mcgrp = NL80211_MCGRP_VENDOR; 12924 12925 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), 12926 skb, 0, mcgrp, gfp); 12927 } 12928 } 12929 EXPORT_SYMBOL(__cfg80211_send_event_skb); 12930 12931 #ifdef CONFIG_NL80211_TESTMODE 12932 static int nl80211_testmode_do(struct sk_buff *skb, struct genl_info *info) 12933 { 12934 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 12935 struct wireless_dev *wdev; 12936 int err; 12937 12938 lockdep_assert_held(&rdev->wiphy.mtx); 12939 12940 wdev = __cfg80211_wdev_from_attrs(rdev, genl_info_net(info), 12941 info->attrs); 12942 12943 if (!rdev->ops->testmode_cmd) 12944 return -EOPNOTSUPP; 12945 12946 if (IS_ERR(wdev)) { 12947 err = PTR_ERR(wdev); 12948 if (err != -EINVAL) 12949 return err; 12950 wdev = NULL; 12951 } else if (wdev->wiphy != &rdev->wiphy) { 12952 return -EINVAL; 12953 } 12954 12955 if (!info->attrs[NL80211_ATTR_TESTDATA]) 12956 return -EINVAL; 12957 12958 rdev->cur_cmd_info = info; 12959 err = rdev_testmode_cmd(rdev, wdev, 12960 nla_data(info->attrs[NL80211_ATTR_TESTDATA]), 12961 nla_len(info->attrs[NL80211_ATTR_TESTDATA])); 12962 rdev->cur_cmd_info = NULL; 12963 12964 return err; 12965 } 12966 12967 static int nl80211_testmode_dump(struct sk_buff *skb, 12968 struct netlink_callback *cb) 12969 { 12970 struct cfg80211_registered_device *rdev; 12971 struct nlattr **attrbuf = NULL; 12972 int err; 12973 long phy_idx; 12974 void *data = NULL; 12975 int data_len = 0; 12976 12977 rtnl_lock(); 12978 12979 if (cb->args[0]) { 12980 /* 12981 * 0 is a valid index, but not valid for args[0], 12982 * so we need to offset by 1. 12983 */ 12984 phy_idx = cb->args[0] - 1; 12985 12986 rdev = cfg80211_rdev_by_wiphy_idx(phy_idx); 12987 if (!rdev) { 12988 err = -ENOENT; 12989 goto out_err; 12990 } 12991 } else { 12992 attrbuf = kcalloc(NUM_NL80211_ATTR, sizeof(*attrbuf), 12993 GFP_KERNEL); 12994 if (!attrbuf) { 12995 err = -ENOMEM; 12996 goto out_err; 12997 } 12998 12999 err = nlmsg_parse_deprecated(cb->nlh, 13000 GENL_HDRLEN + nl80211_fam.hdrsize, 13001 attrbuf, nl80211_fam.maxattr, 13002 nl80211_policy, NULL); 13003 if (err) 13004 goto out_err; 13005 13006 rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk), attrbuf); 13007 if (IS_ERR(rdev)) { 13008 err = PTR_ERR(rdev); 13009 goto out_err; 13010 } 13011 phy_idx = rdev->wiphy_idx; 13012 13013 if (attrbuf[NL80211_ATTR_TESTDATA]) 13014 cb->args[1] = (long)attrbuf[NL80211_ATTR_TESTDATA]; 13015 } 13016 13017 if (cb->args[1]) { 13018 data = nla_data((void *)cb->args[1]); 13019 data_len = nla_len((void *)cb->args[1]); 13020 } 13021 13022 if (!rdev->ops->testmode_dump) { 13023 err = -EOPNOTSUPP; 13024 goto out_err; 13025 } 13026 13027 while (1) { 13028 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid, 13029 cb->nlh->nlmsg_seq, NLM_F_MULTI, 13030 NL80211_CMD_TESTMODE); 13031 struct nlattr *tmdata; 13032 13033 if (!hdr) 13034 break; 13035 13036 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, phy_idx)) { 13037 genlmsg_cancel(skb, hdr); 13038 break; 13039 } 13040 13041 tmdata = nla_nest_start_noflag(skb, NL80211_ATTR_TESTDATA); 13042 if (!tmdata) { 13043 genlmsg_cancel(skb, hdr); 13044 break; 13045 } 13046 err = rdev_testmode_dump(rdev, skb, cb, data, data_len); 13047 nla_nest_end(skb, tmdata); 13048 13049 if (err == -ENOBUFS || err == -ENOENT) { 13050 genlmsg_cancel(skb, hdr); 13051 break; 13052 } else if (err) { 13053 genlmsg_cancel(skb, hdr); 13054 goto out_err; 13055 } 13056 13057 genlmsg_end(skb, hdr); 13058 } 13059 13060 err = skb->len; 13061 /* see above */ 13062 cb->args[0] = phy_idx + 1; 13063 out_err: 13064 kfree(attrbuf); 13065 rtnl_unlock(); 13066 return err; 13067 } 13068 #endif 13069 13070 static int nl80211_connect(struct sk_buff *skb, struct genl_info *info) 13071 { 13072 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 13073 struct net_device *dev = info->user_ptr[1]; 13074 struct cfg80211_connect_params connect; 13075 struct wiphy *wiphy; 13076 struct cfg80211_cached_keys *connkeys = NULL; 13077 u32 freq = 0; 13078 int err; 13079 13080 memset(&connect, 0, sizeof(connect)); 13081 13082 if (!info->attrs[NL80211_ATTR_SSID] || 13083 !nla_len(info->attrs[NL80211_ATTR_SSID])) 13084 return -EINVAL; 13085 13086 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) { 13087 connect.auth_type = 13088 nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]); 13089 if (!nl80211_valid_auth_type(rdev, connect.auth_type, 13090 NL80211_CMD_CONNECT)) 13091 return -EINVAL; 13092 } else 13093 connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC; 13094 13095 connect.privacy = info->attrs[NL80211_ATTR_PRIVACY]; 13096 13097 if (info->attrs[NL80211_ATTR_WANT_1X_4WAY_HS] && 13098 !wiphy_ext_feature_isset(&rdev->wiphy, 13099 NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_1X)) 13100 return -EINVAL; 13101 connect.want_1x = info->attrs[NL80211_ATTR_WANT_1X_4WAY_HS]; 13102 13103 err = nl80211_crypto_settings(rdev, info, &connect.crypto, 13104 NL80211_MAX_NR_CIPHER_SUITES); 13105 if (err) 13106 return err; 13107 13108 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION && 13109 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) 13110 return -EOPNOTSUPP; 13111 13112 wiphy = &rdev->wiphy; 13113 13114 connect.bg_scan_period = -1; 13115 if (info->attrs[NL80211_ATTR_BG_SCAN_PERIOD] && 13116 (wiphy->flags & WIPHY_FLAG_SUPPORTS_FW_ROAM)) { 13117 connect.bg_scan_period = 13118 nla_get_u16(info->attrs[NL80211_ATTR_BG_SCAN_PERIOD]); 13119 } 13120 13121 if (info->attrs[NL80211_ATTR_MAC]) 13122 connect.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]); 13123 else if (info->attrs[NL80211_ATTR_MAC_HINT]) 13124 connect.bssid_hint = 13125 nla_data(info->attrs[NL80211_ATTR_MAC_HINT]); 13126 connect.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]); 13127 connect.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]); 13128 13129 if (info->attrs[NL80211_ATTR_IE]) { 13130 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]); 13131 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); 13132 } 13133 13134 if (info->attrs[NL80211_ATTR_USE_MFP]) { 13135 connect.mfp = nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]); 13136 if (connect.mfp == NL80211_MFP_OPTIONAL && 13137 !wiphy_ext_feature_isset(&rdev->wiphy, 13138 NL80211_EXT_FEATURE_MFP_OPTIONAL)) 13139 return -EOPNOTSUPP; 13140 } else { 13141 connect.mfp = NL80211_MFP_NO; 13142 } 13143 13144 if (info->attrs[NL80211_ATTR_PREV_BSSID]) 13145 connect.prev_bssid = 13146 nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]); 13147 13148 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) 13149 freq = MHZ_TO_KHZ(nla_get_u32( 13150 info->attrs[NL80211_ATTR_WIPHY_FREQ])); 13151 if (info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET]) 13152 freq += 13153 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET]); 13154 13155 if (freq) { 13156 connect.channel = nl80211_get_valid_chan(wiphy, freq); 13157 if (!connect.channel) 13158 return -EINVAL; 13159 } else if (info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]) { 13160 freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]); 13161 freq = MHZ_TO_KHZ(freq); 13162 connect.channel_hint = nl80211_get_valid_chan(wiphy, freq); 13163 if (!connect.channel_hint) 13164 return -EINVAL; 13165 } 13166 13167 if (info->attrs[NL80211_ATTR_WIPHY_EDMG_CHANNELS]) { 13168 connect.edmg.channels = 13169 nla_get_u8(info->attrs[NL80211_ATTR_WIPHY_EDMG_CHANNELS]); 13170 13171 if (info->attrs[NL80211_ATTR_WIPHY_EDMG_BW_CONFIG]) 13172 connect.edmg.bw_config = 13173 nla_get_u8(info->attrs[NL80211_ATTR_WIPHY_EDMG_BW_CONFIG]); 13174 } 13175 13176 if (connect.privacy && info->attrs[NL80211_ATTR_KEYS]) { 13177 connkeys = nl80211_parse_connkeys(rdev, info, NULL); 13178 if (IS_ERR(connkeys)) 13179 return PTR_ERR(connkeys); 13180 } 13181 13182 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT])) 13183 connect.flags |= ASSOC_REQ_DISABLE_HT; 13184 13185 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) 13186 memcpy(&connect.ht_capa_mask, 13187 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]), 13188 sizeof(connect.ht_capa_mask)); 13189 13190 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) { 13191 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) { 13192 kfree_sensitive(connkeys); 13193 return -EINVAL; 13194 } 13195 memcpy(&connect.ht_capa, 13196 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]), 13197 sizeof(connect.ht_capa)); 13198 } 13199 13200 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT])) 13201 connect.flags |= ASSOC_REQ_DISABLE_VHT; 13202 13203 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HE])) 13204 connect.flags |= ASSOC_REQ_DISABLE_HE; 13205 13206 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_EHT])) 13207 connect.flags |= ASSOC_REQ_DISABLE_EHT; 13208 13209 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]) 13210 memcpy(&connect.vht_capa_mask, 13211 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]), 13212 sizeof(connect.vht_capa_mask)); 13213 13214 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) { 13215 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]) { 13216 kfree_sensitive(connkeys); 13217 return -EINVAL; 13218 } 13219 memcpy(&connect.vht_capa, 13220 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]), 13221 sizeof(connect.vht_capa)); 13222 } 13223 13224 if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) { 13225 if (!((rdev->wiphy.features & 13226 NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) && 13227 (rdev->wiphy.features & NL80211_FEATURE_QUIET)) && 13228 !wiphy_ext_feature_isset(&rdev->wiphy, 13229 NL80211_EXT_FEATURE_RRM)) { 13230 kfree_sensitive(connkeys); 13231 return -EINVAL; 13232 } 13233 connect.flags |= ASSOC_REQ_USE_RRM; 13234 } 13235 13236 connect.pbss = nla_get_flag(info->attrs[NL80211_ATTR_PBSS]); 13237 if (connect.pbss && !rdev->wiphy.bands[NL80211_BAND_60GHZ]) { 13238 kfree_sensitive(connkeys); 13239 return -EOPNOTSUPP; 13240 } 13241 13242 if (info->attrs[NL80211_ATTR_BSS_SELECT]) { 13243 /* bss selection makes no sense if bssid is set */ 13244 if (connect.bssid) { 13245 kfree_sensitive(connkeys); 13246 return -EINVAL; 13247 } 13248 13249 err = parse_bss_select(info->attrs[NL80211_ATTR_BSS_SELECT], 13250 wiphy, &connect.bss_select); 13251 if (err) { 13252 kfree_sensitive(connkeys); 13253 return err; 13254 } 13255 } 13256 13257 if (wiphy_ext_feature_isset(&rdev->wiphy, 13258 NL80211_EXT_FEATURE_FILS_SK_OFFLOAD) && 13259 info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] && 13260 info->attrs[NL80211_ATTR_FILS_ERP_REALM] && 13261 info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] && 13262 info->attrs[NL80211_ATTR_FILS_ERP_RRK]) { 13263 connect.fils_erp_username = 13264 nla_data(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]); 13265 connect.fils_erp_username_len = 13266 nla_len(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]); 13267 connect.fils_erp_realm = 13268 nla_data(info->attrs[NL80211_ATTR_FILS_ERP_REALM]); 13269 connect.fils_erp_realm_len = 13270 nla_len(info->attrs[NL80211_ATTR_FILS_ERP_REALM]); 13271 connect.fils_erp_next_seq_num = 13272 nla_get_u16( 13273 info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM]); 13274 connect.fils_erp_rrk = 13275 nla_data(info->attrs[NL80211_ATTR_FILS_ERP_RRK]); 13276 connect.fils_erp_rrk_len = 13277 nla_len(info->attrs[NL80211_ATTR_FILS_ERP_RRK]); 13278 } else if (info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] || 13279 info->attrs[NL80211_ATTR_FILS_ERP_REALM] || 13280 info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] || 13281 info->attrs[NL80211_ATTR_FILS_ERP_RRK]) { 13282 kfree_sensitive(connkeys); 13283 return -EINVAL; 13284 } 13285 13286 if (nla_get_flag(info->attrs[NL80211_ATTR_EXTERNAL_AUTH_SUPPORT])) { 13287 if (!info->attrs[NL80211_ATTR_SOCKET_OWNER]) { 13288 kfree_sensitive(connkeys); 13289 GENL_SET_ERR_MSG(info, 13290 "external auth requires connection ownership"); 13291 return -EINVAL; 13292 } 13293 connect.flags |= CONNECT_REQ_EXTERNAL_AUTH_SUPPORT; 13294 } 13295 13296 if (nla_get_flag(info->attrs[NL80211_ATTR_MLO_SUPPORT])) 13297 connect.flags |= CONNECT_REQ_MLO_SUPPORT; 13298 13299 err = cfg80211_connect(rdev, dev, &connect, connkeys, 13300 connect.prev_bssid); 13301 if (err) 13302 kfree_sensitive(connkeys); 13303 13304 if (!err && info->attrs[NL80211_ATTR_SOCKET_OWNER]) { 13305 dev->ieee80211_ptr->conn_owner_nlportid = info->snd_portid; 13306 if (connect.bssid) 13307 memcpy(dev->ieee80211_ptr->disconnect_bssid, 13308 connect.bssid, ETH_ALEN); 13309 else 13310 eth_zero_addr(dev->ieee80211_ptr->disconnect_bssid); 13311 } 13312 13313 return err; 13314 } 13315 13316 static int nl80211_update_connect_params(struct sk_buff *skb, 13317 struct genl_info *info) 13318 { 13319 struct cfg80211_connect_params connect = {}; 13320 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 13321 struct net_device *dev = info->user_ptr[1]; 13322 struct wireless_dev *wdev = dev->ieee80211_ptr; 13323 bool fils_sk_offload; 13324 u32 auth_type; 13325 u32 changed = 0; 13326 13327 if (!rdev->ops->update_connect_params) 13328 return -EOPNOTSUPP; 13329 13330 if (info->attrs[NL80211_ATTR_IE]) { 13331 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]); 13332 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); 13333 changed |= UPDATE_ASSOC_IES; 13334 } 13335 13336 fils_sk_offload = wiphy_ext_feature_isset(&rdev->wiphy, 13337 NL80211_EXT_FEATURE_FILS_SK_OFFLOAD); 13338 13339 /* 13340 * when driver supports fils-sk offload all attributes must be 13341 * provided. So the else covers "fils-sk-not-all" and 13342 * "no-fils-sk-any". 13343 */ 13344 if (fils_sk_offload && 13345 info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] && 13346 info->attrs[NL80211_ATTR_FILS_ERP_REALM] && 13347 info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] && 13348 info->attrs[NL80211_ATTR_FILS_ERP_RRK]) { 13349 connect.fils_erp_username = 13350 nla_data(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]); 13351 connect.fils_erp_username_len = 13352 nla_len(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]); 13353 connect.fils_erp_realm = 13354 nla_data(info->attrs[NL80211_ATTR_FILS_ERP_REALM]); 13355 connect.fils_erp_realm_len = 13356 nla_len(info->attrs[NL80211_ATTR_FILS_ERP_REALM]); 13357 connect.fils_erp_next_seq_num = 13358 nla_get_u16( 13359 info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM]); 13360 connect.fils_erp_rrk = 13361 nla_data(info->attrs[NL80211_ATTR_FILS_ERP_RRK]); 13362 connect.fils_erp_rrk_len = 13363 nla_len(info->attrs[NL80211_ATTR_FILS_ERP_RRK]); 13364 changed |= UPDATE_FILS_ERP_INFO; 13365 } else if (info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] || 13366 info->attrs[NL80211_ATTR_FILS_ERP_REALM] || 13367 info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] || 13368 info->attrs[NL80211_ATTR_FILS_ERP_RRK]) { 13369 return -EINVAL; 13370 } 13371 13372 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) { 13373 auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]); 13374 if (!nl80211_valid_auth_type(rdev, auth_type, 13375 NL80211_CMD_CONNECT)) 13376 return -EINVAL; 13377 13378 if (auth_type == NL80211_AUTHTYPE_FILS_SK && 13379 fils_sk_offload && !(changed & UPDATE_FILS_ERP_INFO)) 13380 return -EINVAL; 13381 13382 connect.auth_type = auth_type; 13383 changed |= UPDATE_AUTH_TYPE; 13384 } 13385 13386 if (!wdev->connected) 13387 return -ENOLINK; 13388 13389 return rdev_update_connect_params(rdev, dev, &connect, changed); 13390 } 13391 13392 static int nl80211_disconnect(struct sk_buff *skb, struct genl_info *info) 13393 { 13394 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 13395 struct net_device *dev = info->user_ptr[1]; 13396 u16 reason; 13397 13398 if (dev->ieee80211_ptr->conn_owner_nlportid && 13399 dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid) 13400 return -EPERM; 13401 13402 reason = nla_get_u16_default(info->attrs[NL80211_ATTR_REASON_CODE], 13403 WLAN_REASON_DEAUTH_LEAVING); 13404 13405 if (reason == 0) 13406 return -EINVAL; 13407 13408 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION && 13409 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) 13410 return -EOPNOTSUPP; 13411 13412 return cfg80211_disconnect(rdev, dev, reason, true); 13413 } 13414 13415 static int nl80211_wiphy_netns(struct sk_buff *skb, struct genl_info *info) 13416 { 13417 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 13418 struct net *net; 13419 int err; 13420 13421 if (info->attrs[NL80211_ATTR_PID]) { 13422 u32 pid = nla_get_u32(info->attrs[NL80211_ATTR_PID]); 13423 13424 net = get_net_ns_by_pid(pid); 13425 } else if (info->attrs[NL80211_ATTR_NETNS_FD]) { 13426 u32 fd = nla_get_u32(info->attrs[NL80211_ATTR_NETNS_FD]); 13427 13428 net = get_net_ns_by_fd(fd); 13429 } else { 13430 return -EINVAL; 13431 } 13432 13433 if (IS_ERR(net)) 13434 return PTR_ERR(net); 13435 13436 err = 0; 13437 13438 /* check if anything to do */ 13439 if (!net_eq(wiphy_net(&rdev->wiphy), net)) 13440 err = cfg80211_switch_netns(rdev, net); 13441 13442 put_net(net); 13443 return err; 13444 } 13445 13446 static int nl80211_set_pmksa(struct sk_buff *skb, struct genl_info *info) 13447 { 13448 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 13449 struct net_device *dev = info->user_ptr[1]; 13450 struct cfg80211_pmksa pmksa; 13451 bool ap_pmksa_caching_support = false; 13452 13453 memset(&pmksa, 0, sizeof(struct cfg80211_pmksa)); 13454 13455 ap_pmksa_caching_support = wiphy_ext_feature_isset(&rdev->wiphy, 13456 NL80211_EXT_FEATURE_AP_PMKSA_CACHING); 13457 13458 if (!info->attrs[NL80211_ATTR_PMKID]) 13459 return -EINVAL; 13460 13461 pmksa.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]); 13462 13463 if (info->attrs[NL80211_ATTR_MAC]) { 13464 pmksa.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]); 13465 } else if (info->attrs[NL80211_ATTR_SSID] && 13466 info->attrs[NL80211_ATTR_FILS_CACHE_ID] && 13467 info->attrs[NL80211_ATTR_PMK]) { 13468 pmksa.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]); 13469 pmksa.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]); 13470 pmksa.cache_id = nla_data(info->attrs[NL80211_ATTR_FILS_CACHE_ID]); 13471 } else { 13472 return -EINVAL; 13473 } 13474 13475 if (info->attrs[NL80211_ATTR_PMK]) { 13476 pmksa.pmk = nla_data(info->attrs[NL80211_ATTR_PMK]); 13477 pmksa.pmk_len = nla_len(info->attrs[NL80211_ATTR_PMK]); 13478 } 13479 13480 if (info->attrs[NL80211_ATTR_PMK_LIFETIME]) 13481 pmksa.pmk_lifetime = 13482 nla_get_u32(info->attrs[NL80211_ATTR_PMK_LIFETIME]); 13483 13484 if (info->attrs[NL80211_ATTR_PMK_REAUTH_THRESHOLD]) 13485 pmksa.pmk_reauth_threshold = 13486 nla_get_u8(info->attrs[NL80211_ATTR_PMK_REAUTH_THRESHOLD]); 13487 13488 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION && 13489 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT && 13490 !((dev->ieee80211_ptr->iftype == NL80211_IFTYPE_AP || 13491 dev->ieee80211_ptr->iftype == NL80211_IFTYPE_P2P_GO) && 13492 ap_pmksa_caching_support)) 13493 return -EOPNOTSUPP; 13494 13495 if (!rdev->ops->set_pmksa) 13496 return -EOPNOTSUPP; 13497 13498 return rdev_set_pmksa(rdev, dev, &pmksa); 13499 } 13500 13501 static int nl80211_del_pmksa(struct sk_buff *skb, struct genl_info *info) 13502 { 13503 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 13504 struct net_device *dev = info->user_ptr[1]; 13505 struct cfg80211_pmksa pmksa; 13506 bool sae_offload_support = false; 13507 bool owe_offload_support = false; 13508 bool ap_pmksa_caching_support = false; 13509 13510 memset(&pmksa, 0, sizeof(struct cfg80211_pmksa)); 13511 13512 sae_offload_support = wiphy_ext_feature_isset(&rdev->wiphy, 13513 NL80211_EXT_FEATURE_SAE_OFFLOAD); 13514 owe_offload_support = wiphy_ext_feature_isset(&rdev->wiphy, 13515 NL80211_EXT_FEATURE_OWE_OFFLOAD); 13516 ap_pmksa_caching_support = wiphy_ext_feature_isset(&rdev->wiphy, 13517 NL80211_EXT_FEATURE_AP_PMKSA_CACHING); 13518 13519 if (info->attrs[NL80211_ATTR_PMKID]) 13520 pmksa.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]); 13521 13522 if (info->attrs[NL80211_ATTR_MAC]) { 13523 pmksa.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]); 13524 } else if (info->attrs[NL80211_ATTR_SSID]) { 13525 /* SSID based pmksa flush supported only for FILS, 13526 * OWE/SAE OFFLOAD cases 13527 */ 13528 if (info->attrs[NL80211_ATTR_FILS_CACHE_ID] && 13529 info->attrs[NL80211_ATTR_PMK]) { 13530 pmksa.cache_id = nla_data(info->attrs[NL80211_ATTR_FILS_CACHE_ID]); 13531 } else if (!sae_offload_support && !owe_offload_support) { 13532 return -EINVAL; 13533 } 13534 pmksa.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]); 13535 pmksa.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]); 13536 } else { 13537 return -EINVAL; 13538 } 13539 13540 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION && 13541 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT && 13542 !((dev->ieee80211_ptr->iftype == NL80211_IFTYPE_AP || 13543 dev->ieee80211_ptr->iftype == NL80211_IFTYPE_P2P_GO) && 13544 ap_pmksa_caching_support)) 13545 return -EOPNOTSUPP; 13546 13547 if (!rdev->ops->del_pmksa) 13548 return -EOPNOTSUPP; 13549 13550 return rdev_del_pmksa(rdev, dev, &pmksa); 13551 } 13552 13553 static int nl80211_flush_pmksa(struct sk_buff *skb, struct genl_info *info) 13554 { 13555 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 13556 struct net_device *dev = info->user_ptr[1]; 13557 13558 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION && 13559 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) 13560 return -EOPNOTSUPP; 13561 13562 if (!rdev->ops->flush_pmksa) 13563 return -EOPNOTSUPP; 13564 13565 return rdev_flush_pmksa(rdev, dev); 13566 } 13567 13568 static int nl80211_tdls_mgmt(struct sk_buff *skb, struct genl_info *info) 13569 { 13570 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 13571 struct net_device *dev = info->user_ptr[1]; 13572 u8 action_code, dialog_token; 13573 u32 peer_capability = 0; 13574 u16 status_code; 13575 u8 *peer; 13576 int link_id; 13577 bool initiator; 13578 13579 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) || 13580 !rdev->ops->tdls_mgmt) 13581 return -EOPNOTSUPP; 13582 13583 if (!info->attrs[NL80211_ATTR_TDLS_ACTION] || 13584 !info->attrs[NL80211_ATTR_STATUS_CODE] || 13585 !info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN] || 13586 !info->attrs[NL80211_ATTR_IE] || 13587 !info->attrs[NL80211_ATTR_MAC]) 13588 return -EINVAL; 13589 13590 peer = nla_data(info->attrs[NL80211_ATTR_MAC]); 13591 action_code = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_ACTION]); 13592 status_code = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]); 13593 dialog_token = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN]); 13594 initiator = nla_get_flag(info->attrs[NL80211_ATTR_TDLS_INITIATOR]); 13595 if (info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY]) 13596 peer_capability = 13597 nla_get_u32(info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY]); 13598 link_id = nl80211_link_id_or_invalid(info->attrs); 13599 13600 return rdev_tdls_mgmt(rdev, dev, peer, link_id, action_code, 13601 dialog_token, status_code, peer_capability, 13602 initiator, 13603 nla_data(info->attrs[NL80211_ATTR_IE]), 13604 nla_len(info->attrs[NL80211_ATTR_IE])); 13605 } 13606 13607 static int nl80211_tdls_oper(struct sk_buff *skb, struct genl_info *info) 13608 { 13609 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 13610 struct net_device *dev = info->user_ptr[1]; 13611 enum nl80211_tdls_operation operation; 13612 u8 *peer; 13613 13614 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) || 13615 !rdev->ops->tdls_oper) 13616 return -EOPNOTSUPP; 13617 13618 if (!info->attrs[NL80211_ATTR_TDLS_OPERATION] || 13619 !info->attrs[NL80211_ATTR_MAC]) 13620 return -EINVAL; 13621 13622 operation = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_OPERATION]); 13623 peer = nla_data(info->attrs[NL80211_ATTR_MAC]); 13624 13625 return rdev_tdls_oper(rdev, dev, peer, operation); 13626 } 13627 13628 static int nl80211_remain_on_channel(struct sk_buff *skb, 13629 struct genl_info *info) 13630 { 13631 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 13632 unsigned int link_id = nl80211_link_id(info->attrs); 13633 struct wireless_dev *wdev = info->user_ptr[1]; 13634 struct cfg80211_chan_def chandef; 13635 struct sk_buff *msg; 13636 void *hdr; 13637 u64 cookie; 13638 u32 duration; 13639 int err; 13640 13641 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] || 13642 !info->attrs[NL80211_ATTR_DURATION]) 13643 return -EINVAL; 13644 13645 duration = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]); 13646 13647 if (!rdev->ops->remain_on_channel || 13648 !(rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL)) 13649 return -EOPNOTSUPP; 13650 13651 /* 13652 * We should be on that channel for at least a minimum amount of 13653 * time (10ms) but no longer than the driver supports. 13654 */ 13655 if (duration < NL80211_MIN_REMAIN_ON_CHANNEL_TIME || 13656 duration > rdev->wiphy.max_remain_on_channel_duration) 13657 return -EINVAL; 13658 13659 err = nl80211_parse_chandef(rdev, info, &chandef); 13660 if (err) 13661 return err; 13662 13663 if (!cfg80211_off_channel_oper_allowed(wdev, chandef.chan)) { 13664 const struct cfg80211_chan_def *oper_chandef, *compat_chandef; 13665 13666 oper_chandef = wdev_chandef(wdev, link_id); 13667 13668 if (WARN_ON(!oper_chandef)) { 13669 /* cannot happen since we must beacon to get here */ 13670 WARN_ON(1); 13671 return -EBUSY; 13672 } 13673 13674 /* note: returns first one if identical chandefs */ 13675 compat_chandef = cfg80211_chandef_compatible(&chandef, 13676 oper_chandef); 13677 13678 if (compat_chandef != &chandef) 13679 return -EBUSY; 13680 } 13681 13682 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 13683 if (!msg) 13684 return -ENOMEM; 13685 13686 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0, 13687 NL80211_CMD_REMAIN_ON_CHANNEL); 13688 if (!hdr) { 13689 err = -ENOBUFS; 13690 goto free_msg; 13691 } 13692 13693 err = rdev_remain_on_channel(rdev, wdev, chandef.chan, 13694 duration, &cookie); 13695 13696 if (err) 13697 goto free_msg; 13698 13699 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie, 13700 NL80211_ATTR_PAD)) 13701 goto nla_put_failure; 13702 13703 genlmsg_end(msg, hdr); 13704 13705 return genlmsg_reply(msg, info); 13706 13707 nla_put_failure: 13708 err = -ENOBUFS; 13709 free_msg: 13710 nlmsg_free(msg); 13711 return err; 13712 } 13713 13714 static int nl80211_cancel_remain_on_channel(struct sk_buff *skb, 13715 struct genl_info *info) 13716 { 13717 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 13718 struct wireless_dev *wdev = info->user_ptr[1]; 13719 u64 cookie; 13720 13721 if (!info->attrs[NL80211_ATTR_COOKIE]) 13722 return -EINVAL; 13723 13724 if (!rdev->ops->cancel_remain_on_channel) 13725 return -EOPNOTSUPP; 13726 13727 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]); 13728 13729 return rdev_cancel_remain_on_channel(rdev, wdev, cookie); 13730 } 13731 13732 static int nl80211_set_tx_bitrate_mask(struct sk_buff *skb, 13733 struct genl_info *info) 13734 { 13735 struct cfg80211_bitrate_mask mask; 13736 unsigned int link_id = nl80211_link_id(info->attrs); 13737 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 13738 struct net_device *dev = info->user_ptr[1]; 13739 int err; 13740 13741 if (!rdev->ops->set_bitrate_mask) 13742 return -EOPNOTSUPP; 13743 13744 err = nl80211_parse_tx_bitrate_mask(info, info->attrs, 13745 NL80211_ATTR_TX_RATES, &mask, 13746 dev, true, link_id); 13747 if (err) 13748 return err; 13749 13750 return rdev_set_bitrate_mask(rdev, dev, link_id, NULL, &mask); 13751 } 13752 13753 static int nl80211_register_mgmt(struct sk_buff *skb, struct genl_info *info) 13754 { 13755 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 13756 struct wireless_dev *wdev = info->user_ptr[1]; 13757 u16 frame_type = IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION; 13758 13759 if (!info->attrs[NL80211_ATTR_FRAME_MATCH]) 13760 return -EINVAL; 13761 13762 if (info->attrs[NL80211_ATTR_FRAME_TYPE]) 13763 frame_type = nla_get_u16(info->attrs[NL80211_ATTR_FRAME_TYPE]); 13764 13765 switch (wdev->iftype) { 13766 case NL80211_IFTYPE_STATION: 13767 case NL80211_IFTYPE_ADHOC: 13768 case NL80211_IFTYPE_P2P_CLIENT: 13769 case NL80211_IFTYPE_AP: 13770 case NL80211_IFTYPE_AP_VLAN: 13771 case NL80211_IFTYPE_MESH_POINT: 13772 case NL80211_IFTYPE_P2P_GO: 13773 case NL80211_IFTYPE_P2P_DEVICE: 13774 break; 13775 case NL80211_IFTYPE_NAN: 13776 if (!wiphy_ext_feature_isset(wdev->wiphy, 13777 NL80211_EXT_FEATURE_SECURE_NAN) && 13778 !(wdev->wiphy->nan_capa.flags & 13779 WIPHY_NAN_FLAGS_USERSPACE_DE)) 13780 return -EOPNOTSUPP; 13781 break; 13782 default: 13783 return -EOPNOTSUPP; 13784 } 13785 13786 /* not much point in registering if we can't reply */ 13787 if (!rdev->ops->mgmt_tx) 13788 return -EOPNOTSUPP; 13789 13790 if (info->attrs[NL80211_ATTR_RECEIVE_MULTICAST] && 13791 !wiphy_ext_feature_isset(&rdev->wiphy, 13792 NL80211_EXT_FEATURE_MULTICAST_REGISTRATIONS)) { 13793 GENL_SET_ERR_MSG(info, 13794 "multicast RX registrations are not supported"); 13795 return -EOPNOTSUPP; 13796 } 13797 13798 return cfg80211_mlme_register_mgmt(wdev, info->snd_portid, frame_type, 13799 nla_data(info->attrs[NL80211_ATTR_FRAME_MATCH]), 13800 nla_len(info->attrs[NL80211_ATTR_FRAME_MATCH]), 13801 info->attrs[NL80211_ATTR_RECEIVE_MULTICAST], 13802 info->extack); 13803 } 13804 13805 static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info) 13806 { 13807 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 13808 struct wireless_dev *wdev = info->user_ptr[1]; 13809 struct cfg80211_chan_def chandef; 13810 int err; 13811 void *hdr = NULL; 13812 u64 cookie; 13813 struct sk_buff *msg = NULL; 13814 struct cfg80211_mgmt_tx_params params = { 13815 .dont_wait_for_ack = 13816 info->attrs[NL80211_ATTR_DONT_WAIT_FOR_ACK], 13817 }; 13818 13819 if (!info->attrs[NL80211_ATTR_FRAME]) 13820 return -EINVAL; 13821 13822 if (!rdev->ops->mgmt_tx) 13823 return -EOPNOTSUPP; 13824 13825 switch (wdev->iftype) { 13826 case NL80211_IFTYPE_P2P_DEVICE: 13827 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ]) 13828 return -EINVAL; 13829 break; 13830 case NL80211_IFTYPE_STATION: 13831 case NL80211_IFTYPE_ADHOC: 13832 case NL80211_IFTYPE_P2P_CLIENT: 13833 case NL80211_IFTYPE_AP: 13834 case NL80211_IFTYPE_AP_VLAN: 13835 case NL80211_IFTYPE_MESH_POINT: 13836 case NL80211_IFTYPE_P2P_GO: 13837 break; 13838 case NL80211_IFTYPE_NAN: 13839 if (!wiphy_ext_feature_isset(wdev->wiphy, 13840 NL80211_EXT_FEATURE_SECURE_NAN) && 13841 !(wdev->wiphy->nan_capa.flags & 13842 WIPHY_NAN_FLAGS_USERSPACE_DE)) 13843 return -EOPNOTSUPP; 13844 break; 13845 default: 13846 return -EOPNOTSUPP; 13847 } 13848 13849 if (info->attrs[NL80211_ATTR_DURATION]) { 13850 if (!(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX)) 13851 return -EINVAL; 13852 params.wait = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]); 13853 13854 /* 13855 * We should wait on the channel for at least a minimum amount 13856 * of time (10ms) but no longer than the driver supports. 13857 */ 13858 if (params.wait < NL80211_MIN_REMAIN_ON_CHANNEL_TIME || 13859 params.wait > rdev->wiphy.max_remain_on_channel_duration) 13860 return -EINVAL; 13861 } 13862 13863 params.offchan = info->attrs[NL80211_ATTR_OFFCHANNEL_TX_OK]; 13864 13865 if (params.offchan && !(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX)) 13866 return -EINVAL; 13867 13868 params.no_cck = nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]); 13869 13870 /* get the channel if any has been specified, otherwise pass NULL to 13871 * the driver. The latter will use the current one 13872 */ 13873 chandef.chan = NULL; 13874 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) { 13875 err = nl80211_parse_chandef(rdev, info, &chandef); 13876 if (err) 13877 return err; 13878 } 13879 13880 if (!chandef.chan && params.offchan) 13881 return -EINVAL; 13882 13883 if (params.offchan && 13884 !cfg80211_off_channel_oper_allowed(wdev, chandef.chan)) 13885 return -EBUSY; 13886 13887 params.link_id = nl80211_link_id_or_invalid(info->attrs); 13888 /* 13889 * This now races due to the unlock, but we cannot check 13890 * the valid links for the _station_ anyway, so that's up 13891 * to the driver. 13892 */ 13893 if (params.link_id >= 0 && 13894 !(wdev->valid_links & BIT(params.link_id))) 13895 return -EINVAL; 13896 13897 params.buf = nla_data(info->attrs[NL80211_ATTR_FRAME]); 13898 params.len = nla_len(info->attrs[NL80211_ATTR_FRAME]); 13899 13900 err = nl80211_parse_counter_offsets(rdev, NULL, params.len, -1, 13901 info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX], 13902 ¶ms.csa_offsets, 13903 ¶ms.n_csa_offsets); 13904 if (err) 13905 return err; 13906 13907 if (!params.dont_wait_for_ack) { 13908 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 13909 if (!msg) 13910 return -ENOMEM; 13911 13912 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0, 13913 NL80211_CMD_FRAME); 13914 if (!hdr) { 13915 err = -ENOBUFS; 13916 goto free_msg; 13917 } 13918 } 13919 13920 params.chan = chandef.chan; 13921 err = cfg80211_mlme_mgmt_tx(rdev, wdev, ¶ms, &cookie); 13922 if (err) 13923 goto free_msg; 13924 13925 if (msg) { 13926 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie, 13927 NL80211_ATTR_PAD)) 13928 goto nla_put_failure; 13929 13930 genlmsg_end(msg, hdr); 13931 return genlmsg_reply(msg, info); 13932 } 13933 13934 return 0; 13935 13936 nla_put_failure: 13937 err = -ENOBUFS; 13938 free_msg: 13939 nlmsg_free(msg); 13940 return err; 13941 } 13942 13943 static int nl80211_tx_mgmt_cancel_wait(struct sk_buff *skb, struct genl_info *info) 13944 { 13945 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 13946 struct wireless_dev *wdev = info->user_ptr[1]; 13947 u64 cookie; 13948 13949 if (!info->attrs[NL80211_ATTR_COOKIE]) 13950 return -EINVAL; 13951 13952 if (!rdev->ops->mgmt_tx_cancel_wait) 13953 return -EOPNOTSUPP; 13954 13955 switch (wdev->iftype) { 13956 case NL80211_IFTYPE_STATION: 13957 case NL80211_IFTYPE_ADHOC: 13958 case NL80211_IFTYPE_P2P_CLIENT: 13959 case NL80211_IFTYPE_AP: 13960 case NL80211_IFTYPE_AP_VLAN: 13961 case NL80211_IFTYPE_P2P_GO: 13962 case NL80211_IFTYPE_P2P_DEVICE: 13963 break; 13964 case NL80211_IFTYPE_NAN: 13965 if (!wiphy_ext_feature_isset(wdev->wiphy, 13966 NL80211_EXT_FEATURE_SECURE_NAN)) 13967 return -EOPNOTSUPP; 13968 break; 13969 default: 13970 return -EOPNOTSUPP; 13971 } 13972 13973 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]); 13974 13975 return rdev_mgmt_tx_cancel_wait(rdev, wdev, cookie); 13976 } 13977 13978 static int nl80211_set_power_save(struct sk_buff *skb, struct genl_info *info) 13979 { 13980 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 13981 struct wireless_dev *wdev; 13982 struct net_device *dev = info->user_ptr[1]; 13983 u8 ps_state; 13984 bool state; 13985 int err; 13986 13987 if (!info->attrs[NL80211_ATTR_PS_STATE]) 13988 return -EINVAL; 13989 13990 ps_state = nla_get_u32(info->attrs[NL80211_ATTR_PS_STATE]); 13991 13992 wdev = dev->ieee80211_ptr; 13993 13994 if (!rdev->ops->set_power_mgmt) 13995 return -EOPNOTSUPP; 13996 13997 state = (ps_state == NL80211_PS_ENABLED) ? true : false; 13998 13999 if (state == wdev->ps) 14000 return 0; 14001 14002 err = rdev_set_power_mgmt(rdev, dev, state, wdev->ps_timeout); 14003 if (!err) 14004 wdev->ps = state; 14005 return err; 14006 } 14007 14008 static int nl80211_get_power_save(struct sk_buff *skb, struct genl_info *info) 14009 { 14010 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 14011 enum nl80211_ps_state ps_state; 14012 struct wireless_dev *wdev; 14013 struct net_device *dev = info->user_ptr[1]; 14014 struct sk_buff *msg; 14015 void *hdr; 14016 int err; 14017 14018 wdev = dev->ieee80211_ptr; 14019 14020 if (!rdev->ops->set_power_mgmt) 14021 return -EOPNOTSUPP; 14022 14023 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 14024 if (!msg) 14025 return -ENOMEM; 14026 14027 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0, 14028 NL80211_CMD_GET_POWER_SAVE); 14029 if (!hdr) { 14030 err = -ENOBUFS; 14031 goto free_msg; 14032 } 14033 14034 if (wdev->ps) 14035 ps_state = NL80211_PS_ENABLED; 14036 else 14037 ps_state = NL80211_PS_DISABLED; 14038 14039 if (nla_put_u32(msg, NL80211_ATTR_PS_STATE, ps_state)) 14040 goto nla_put_failure; 14041 14042 genlmsg_end(msg, hdr); 14043 return genlmsg_reply(msg, info); 14044 14045 nla_put_failure: 14046 err = -ENOBUFS; 14047 free_msg: 14048 nlmsg_free(msg); 14049 return err; 14050 } 14051 14052 static const struct nla_policy 14053 nl80211_attr_cqm_policy[NL80211_ATTR_CQM_MAX + 1] = { 14054 [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_BINARY }, 14055 [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U32 }, 14056 [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 }, 14057 [NL80211_ATTR_CQM_TXE_RATE] = { .type = NLA_U32 }, 14058 [NL80211_ATTR_CQM_TXE_PKTS] = { .type = NLA_U32 }, 14059 [NL80211_ATTR_CQM_TXE_INTVL] = { .type = NLA_U32 }, 14060 [NL80211_ATTR_CQM_RSSI_LEVEL] = { .type = NLA_S32 }, 14061 }; 14062 14063 static int nl80211_set_cqm_txe(struct genl_info *info, 14064 u32 rate, u32 pkts, u32 intvl) 14065 { 14066 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 14067 struct net_device *dev = info->user_ptr[1]; 14068 struct wireless_dev *wdev = dev->ieee80211_ptr; 14069 14070 if (rate > 100 || intvl > NL80211_CQM_TXE_MAX_INTVL) 14071 return -EINVAL; 14072 14073 if (!rdev->ops->set_cqm_txe_config) 14074 return -EOPNOTSUPP; 14075 14076 if (wdev->iftype != NL80211_IFTYPE_STATION && 14077 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT) 14078 return -EOPNOTSUPP; 14079 14080 return rdev_set_cqm_txe_config(rdev, dev, rate, pkts, intvl); 14081 } 14082 14083 static int cfg80211_cqm_rssi_update(struct cfg80211_registered_device *rdev, 14084 struct net_device *dev, 14085 struct cfg80211_cqm_config *cqm_config) 14086 { 14087 struct wireless_dev *wdev = dev->ieee80211_ptr; 14088 s32 last, low, high; 14089 u32 hyst; 14090 int i, n, low_index; 14091 int err; 14092 14093 /* 14094 * Obtain current RSSI value if possible, if not and no RSSI threshold 14095 * event has been received yet, we should receive an event after a 14096 * connection is established and enough beacons received to calculate 14097 * the average. 14098 */ 14099 if (!cqm_config->last_rssi_event_value && 14100 wdev->links[0].client.current_bss && 14101 rdev->ops->get_station) { 14102 struct station_info sinfo = {}; 14103 u8 *mac_addr; 14104 14105 mac_addr = wdev->links[0].client.current_bss->pub.bssid; 14106 14107 err = rdev_get_station(rdev, dev, mac_addr, &sinfo); 14108 if (err) 14109 return err; 14110 14111 cfg80211_sinfo_release_content(&sinfo); 14112 if (sinfo.filled & BIT_ULL(NL80211_STA_INFO_BEACON_SIGNAL_AVG)) 14113 cqm_config->last_rssi_event_value = 14114 (s8) sinfo.rx_beacon_signal_avg; 14115 } 14116 14117 last = cqm_config->last_rssi_event_value; 14118 hyst = cqm_config->rssi_hyst; 14119 n = cqm_config->n_rssi_thresholds; 14120 14121 for (i = 0; i < n; i++) { 14122 i = array_index_nospec(i, n); 14123 if (last < cqm_config->rssi_thresholds[i]) 14124 break; 14125 } 14126 14127 low_index = i - 1; 14128 if (low_index >= 0) { 14129 low_index = array_index_nospec(low_index, n); 14130 low = cqm_config->rssi_thresholds[low_index] - hyst; 14131 } else { 14132 low = S32_MIN; 14133 } 14134 if (i < n) { 14135 i = array_index_nospec(i, n); 14136 high = cqm_config->rssi_thresholds[i] + hyst - 1; 14137 } else { 14138 high = S32_MAX; 14139 } 14140 14141 return rdev_set_cqm_rssi_range_config(rdev, dev, low, high); 14142 } 14143 14144 static int nl80211_set_cqm_rssi(struct genl_info *info, 14145 const s32 *thresholds, int n_thresholds, 14146 u32 hysteresis) 14147 { 14148 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 14149 struct cfg80211_cqm_config *cqm_config = NULL, *old; 14150 struct net_device *dev = info->user_ptr[1]; 14151 struct wireless_dev *wdev = dev->ieee80211_ptr; 14152 s32 prev = S32_MIN; 14153 int i, err; 14154 14155 /* Check all values negative and sorted */ 14156 for (i = 0; i < n_thresholds; i++) { 14157 if (thresholds[i] > 0 || thresholds[i] <= prev) 14158 return -EINVAL; 14159 14160 prev = thresholds[i]; 14161 } 14162 14163 if (wdev->iftype != NL80211_IFTYPE_STATION && 14164 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT) 14165 return -EOPNOTSUPP; 14166 14167 if (n_thresholds == 1 && thresholds[0] == 0) /* Disabling */ 14168 n_thresholds = 0; 14169 14170 old = wiphy_dereference(wdev->wiphy, wdev->cqm_config); 14171 14172 /* if already disabled just succeed */ 14173 if (!n_thresholds && !old) 14174 return 0; 14175 14176 if (n_thresholds > 1) { 14177 if (!wiphy_ext_feature_isset(&rdev->wiphy, 14178 NL80211_EXT_FEATURE_CQM_RSSI_LIST) || 14179 !rdev->ops->set_cqm_rssi_range_config) 14180 return -EOPNOTSUPP; 14181 } else { 14182 if (!rdev->ops->set_cqm_rssi_config) 14183 return -EOPNOTSUPP; 14184 } 14185 14186 if (n_thresholds) { 14187 cqm_config = kzalloc(struct_size(cqm_config, rssi_thresholds, 14188 n_thresholds), 14189 GFP_KERNEL); 14190 if (!cqm_config) 14191 return -ENOMEM; 14192 14193 cqm_config->rssi_hyst = hysteresis; 14194 cqm_config->n_rssi_thresholds = n_thresholds; 14195 memcpy(cqm_config->rssi_thresholds, thresholds, 14196 flex_array_size(cqm_config, rssi_thresholds, 14197 n_thresholds)); 14198 cqm_config->use_range_api = n_thresholds > 1 || 14199 !rdev->ops->set_cqm_rssi_config; 14200 14201 rcu_assign_pointer(wdev->cqm_config, cqm_config); 14202 14203 if (cqm_config->use_range_api) 14204 err = cfg80211_cqm_rssi_update(rdev, dev, cqm_config); 14205 else 14206 err = rdev_set_cqm_rssi_config(rdev, dev, 14207 thresholds[0], 14208 hysteresis); 14209 } else { 14210 RCU_INIT_POINTER(wdev->cqm_config, NULL); 14211 /* if enabled as range also disable via range */ 14212 if (old->use_range_api) 14213 err = rdev_set_cqm_rssi_range_config(rdev, dev, 0, 0); 14214 else 14215 err = rdev_set_cqm_rssi_config(rdev, dev, 0, 0); 14216 } 14217 14218 if (err) { 14219 rcu_assign_pointer(wdev->cqm_config, old); 14220 kfree_rcu(cqm_config, rcu_head); 14221 } else { 14222 kfree_rcu(old, rcu_head); 14223 } 14224 14225 return err; 14226 } 14227 14228 static int nl80211_set_cqm(struct sk_buff *skb, struct genl_info *info) 14229 { 14230 struct nlattr *attrs[NL80211_ATTR_CQM_MAX + 1]; 14231 struct nlattr *cqm; 14232 int err; 14233 14234 cqm = info->attrs[NL80211_ATTR_CQM]; 14235 if (!cqm) 14236 return -EINVAL; 14237 14238 err = nla_parse_nested_deprecated(attrs, NL80211_ATTR_CQM_MAX, cqm, 14239 nl80211_attr_cqm_policy, 14240 info->extack); 14241 if (err) 14242 return err; 14243 14244 if (attrs[NL80211_ATTR_CQM_RSSI_THOLD] && 14245 attrs[NL80211_ATTR_CQM_RSSI_HYST]) { 14246 const s32 *thresholds = 14247 nla_data(attrs[NL80211_ATTR_CQM_RSSI_THOLD]); 14248 int len = nla_len(attrs[NL80211_ATTR_CQM_RSSI_THOLD]); 14249 u32 hysteresis = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_HYST]); 14250 14251 if (len % 4) 14252 return -EINVAL; 14253 14254 return nl80211_set_cqm_rssi(info, thresholds, len / 4, 14255 hysteresis); 14256 } 14257 14258 if (attrs[NL80211_ATTR_CQM_TXE_RATE] && 14259 attrs[NL80211_ATTR_CQM_TXE_PKTS] && 14260 attrs[NL80211_ATTR_CQM_TXE_INTVL]) { 14261 u32 rate = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_RATE]); 14262 u32 pkts = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_PKTS]); 14263 u32 intvl = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_INTVL]); 14264 14265 return nl80211_set_cqm_txe(info, rate, pkts, intvl); 14266 } 14267 14268 return -EINVAL; 14269 } 14270 14271 static int nl80211_join_ocb(struct sk_buff *skb, struct genl_info *info) 14272 { 14273 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 14274 struct net_device *dev = info->user_ptr[1]; 14275 struct ocb_setup setup = {}; 14276 int err; 14277 14278 err = nl80211_parse_chandef(rdev, info, &setup.chandef); 14279 if (err) 14280 return err; 14281 14282 return cfg80211_join_ocb(rdev, dev, &setup); 14283 } 14284 14285 static int nl80211_leave_ocb(struct sk_buff *skb, struct genl_info *info) 14286 { 14287 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 14288 struct net_device *dev = info->user_ptr[1]; 14289 14290 return cfg80211_leave_ocb(rdev, dev); 14291 } 14292 14293 static int nl80211_join_mesh(struct sk_buff *skb, struct genl_info *info) 14294 { 14295 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 14296 struct net_device *dev = info->user_ptr[1]; 14297 struct mesh_config cfg; 14298 struct mesh_setup setup; 14299 int err; 14300 14301 /* start with default */ 14302 memcpy(&cfg, &default_mesh_config, sizeof(cfg)); 14303 memcpy(&setup, &default_mesh_setup, sizeof(setup)); 14304 14305 if (info->attrs[NL80211_ATTR_MESH_CONFIG]) { 14306 /* and parse parameters if given */ 14307 err = nl80211_parse_mesh_config(info, &cfg, NULL); 14308 if (err) 14309 return err; 14310 } 14311 14312 if (!info->attrs[NL80211_ATTR_MESH_ID] || 14313 !nla_len(info->attrs[NL80211_ATTR_MESH_ID])) 14314 return -EINVAL; 14315 14316 setup.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]); 14317 setup.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]); 14318 14319 if (info->attrs[NL80211_ATTR_MCAST_RATE] && 14320 !nl80211_parse_mcast_rate(rdev, setup.mcast_rate, 14321 nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE]))) 14322 return -EINVAL; 14323 14324 if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) { 14325 setup.beacon_interval = 14326 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]); 14327 14328 err = cfg80211_validate_beacon_int(rdev, 14329 NL80211_IFTYPE_MESH_POINT, 14330 setup.beacon_interval); 14331 if (err) 14332 return err; 14333 } 14334 14335 if (info->attrs[NL80211_ATTR_DTIM_PERIOD]) { 14336 setup.dtim_period = 14337 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]); 14338 if (setup.dtim_period < 1 || setup.dtim_period > 100) 14339 return -EINVAL; 14340 } 14341 14342 if (info->attrs[NL80211_ATTR_MESH_SETUP]) { 14343 /* parse additional setup parameters if given */ 14344 err = nl80211_parse_mesh_setup(info, &setup); 14345 if (err) 14346 return err; 14347 } 14348 14349 if (setup.user_mpm) 14350 cfg.auto_open_plinks = false; 14351 14352 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) { 14353 err = nl80211_parse_chandef(rdev, info, &setup.chandef); 14354 if (err) 14355 return err; 14356 } else { 14357 /* __cfg80211_join_mesh() will sort it out */ 14358 setup.chandef.chan = NULL; 14359 } 14360 14361 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) { 14362 u8 *rates = nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]); 14363 int n_rates = 14364 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]); 14365 struct ieee80211_supported_band *sband; 14366 14367 if (!setup.chandef.chan) 14368 return -EINVAL; 14369 14370 sband = rdev->wiphy.bands[setup.chandef.chan->band]; 14371 14372 err = ieee80211_get_ratemask(sband, rates, n_rates, 14373 &setup.basic_rates); 14374 if (err) 14375 return err; 14376 } 14377 14378 if (info->attrs[NL80211_ATTR_TX_RATES]) { 14379 err = nl80211_parse_tx_bitrate_mask(info, info->attrs, 14380 NL80211_ATTR_TX_RATES, 14381 &setup.beacon_rate, 14382 dev, false, 0); 14383 if (err) 14384 return err; 14385 14386 if (!setup.chandef.chan) 14387 return -EINVAL; 14388 14389 err = validate_beacon_tx_rate(rdev, setup.chandef.chan->band, 14390 &setup.beacon_rate); 14391 if (err) 14392 return err; 14393 } 14394 14395 setup.userspace_handles_dfs = 14396 nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS]); 14397 14398 if (info->attrs[NL80211_ATTR_CONTROL_PORT_OVER_NL80211]) { 14399 int r = validate_pae_over_nl80211(rdev, info); 14400 14401 if (r < 0) 14402 return r; 14403 14404 setup.control_port_over_nl80211 = true; 14405 } 14406 14407 err = __cfg80211_join_mesh(rdev, dev, &setup, &cfg); 14408 if (!err && info->attrs[NL80211_ATTR_SOCKET_OWNER]) 14409 dev->ieee80211_ptr->conn_owner_nlportid = info->snd_portid; 14410 14411 return err; 14412 } 14413 14414 static int nl80211_leave_mesh(struct sk_buff *skb, struct genl_info *info) 14415 { 14416 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 14417 struct net_device *dev = info->user_ptr[1]; 14418 14419 return cfg80211_leave_mesh(rdev, dev); 14420 } 14421 14422 #ifdef CONFIG_PM 14423 static int nl80211_send_wowlan_patterns(struct sk_buff *msg, 14424 struct cfg80211_registered_device *rdev) 14425 { 14426 struct cfg80211_wowlan *wowlan = rdev->wiphy.wowlan_config; 14427 struct nlattr *nl_pats, *nl_pat; 14428 int i, pat_len; 14429 14430 if (!wowlan->n_patterns) 14431 return 0; 14432 14433 nl_pats = nla_nest_start_noflag(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN); 14434 if (!nl_pats) 14435 return -ENOBUFS; 14436 14437 for (i = 0; i < wowlan->n_patterns; i++) { 14438 nl_pat = nla_nest_start_noflag(msg, i + 1); 14439 if (!nl_pat) 14440 return -ENOBUFS; 14441 pat_len = wowlan->patterns[i].pattern_len; 14442 if (nla_put(msg, NL80211_PKTPAT_MASK, DIV_ROUND_UP(pat_len, 8), 14443 wowlan->patterns[i].mask) || 14444 nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len, 14445 wowlan->patterns[i].pattern) || 14446 nla_put_u32(msg, NL80211_PKTPAT_OFFSET, 14447 wowlan->patterns[i].pkt_offset)) 14448 return -ENOBUFS; 14449 nla_nest_end(msg, nl_pat); 14450 } 14451 nla_nest_end(msg, nl_pats); 14452 14453 return 0; 14454 } 14455 14456 static int nl80211_send_wowlan_tcp(struct sk_buff *msg, 14457 struct cfg80211_wowlan_tcp *tcp) 14458 { 14459 struct nlattr *nl_tcp; 14460 14461 if (!tcp) 14462 return 0; 14463 14464 nl_tcp = nla_nest_start_noflag(msg, 14465 NL80211_WOWLAN_TRIG_TCP_CONNECTION); 14466 if (!nl_tcp) 14467 return -ENOBUFS; 14468 14469 if (nla_put_in_addr(msg, NL80211_WOWLAN_TCP_SRC_IPV4, tcp->src) || 14470 nla_put_in_addr(msg, NL80211_WOWLAN_TCP_DST_IPV4, tcp->dst) || 14471 nla_put(msg, NL80211_WOWLAN_TCP_DST_MAC, ETH_ALEN, tcp->dst_mac) || 14472 nla_put_u16(msg, NL80211_WOWLAN_TCP_SRC_PORT, tcp->src_port) || 14473 nla_put_u16(msg, NL80211_WOWLAN_TCP_DST_PORT, tcp->dst_port) || 14474 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD, 14475 tcp->payload_len, tcp->payload) || 14476 nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL, 14477 tcp->data_interval) || 14478 nla_put(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD, 14479 tcp->wake_len, tcp->wake_data) || 14480 nla_put(msg, NL80211_WOWLAN_TCP_WAKE_MASK, 14481 DIV_ROUND_UP(tcp->wake_len, 8), tcp->wake_mask)) 14482 return -ENOBUFS; 14483 14484 if (tcp->payload_seq.len && 14485 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ, 14486 sizeof(tcp->payload_seq), &tcp->payload_seq)) 14487 return -ENOBUFS; 14488 14489 if (tcp->payload_tok.len && 14490 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN, 14491 sizeof(tcp->payload_tok) + tcp->tokens_size, 14492 &tcp->payload_tok)) 14493 return -ENOBUFS; 14494 14495 nla_nest_end(msg, nl_tcp); 14496 14497 return 0; 14498 } 14499 14500 static int nl80211_send_wowlan_nd(struct sk_buff *msg, 14501 struct cfg80211_sched_scan_request *req) 14502 { 14503 struct nlattr *nd, *freqs, *matches, *match, *scan_plans, *scan_plan; 14504 int i; 14505 14506 if (!req) 14507 return 0; 14508 14509 nd = nla_nest_start_noflag(msg, NL80211_WOWLAN_TRIG_NET_DETECT); 14510 if (!nd) 14511 return -ENOBUFS; 14512 14513 if (req->n_scan_plans == 1 && 14514 nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_INTERVAL, 14515 req->scan_plans[0].interval * 1000)) 14516 return -ENOBUFS; 14517 14518 if (nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_DELAY, req->delay)) 14519 return -ENOBUFS; 14520 14521 if (req->relative_rssi_set) { 14522 struct nl80211_bss_select_rssi_adjust rssi_adjust; 14523 14524 if (nla_put_s8(msg, NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI, 14525 req->relative_rssi)) 14526 return -ENOBUFS; 14527 14528 rssi_adjust.band = req->rssi_adjust.band; 14529 rssi_adjust.delta = req->rssi_adjust.delta; 14530 if (nla_put(msg, NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST, 14531 sizeof(rssi_adjust), &rssi_adjust)) 14532 return -ENOBUFS; 14533 } 14534 14535 freqs = nla_nest_start_noflag(msg, NL80211_ATTR_SCAN_FREQUENCIES); 14536 if (!freqs) 14537 return -ENOBUFS; 14538 14539 for (i = 0; i < req->n_channels; i++) { 14540 if (nla_put_u32(msg, i, req->channels[i]->center_freq)) 14541 return -ENOBUFS; 14542 } 14543 14544 nla_nest_end(msg, freqs); 14545 14546 if (req->n_match_sets) { 14547 matches = nla_nest_start_noflag(msg, 14548 NL80211_ATTR_SCHED_SCAN_MATCH); 14549 if (!matches) 14550 return -ENOBUFS; 14551 14552 for (i = 0; i < req->n_match_sets; i++) { 14553 match = nla_nest_start_noflag(msg, i); 14554 if (!match) 14555 return -ENOBUFS; 14556 14557 if (nla_put(msg, NL80211_SCHED_SCAN_MATCH_ATTR_SSID, 14558 req->match_sets[i].ssid.ssid_len, 14559 req->match_sets[i].ssid.ssid)) 14560 return -ENOBUFS; 14561 nla_nest_end(msg, match); 14562 } 14563 nla_nest_end(msg, matches); 14564 } 14565 14566 scan_plans = nla_nest_start_noflag(msg, NL80211_ATTR_SCHED_SCAN_PLANS); 14567 if (!scan_plans) 14568 return -ENOBUFS; 14569 14570 for (i = 0; i < req->n_scan_plans; i++) { 14571 scan_plan = nla_nest_start_noflag(msg, i + 1); 14572 if (!scan_plan) 14573 return -ENOBUFS; 14574 14575 if (nla_put_u32(msg, NL80211_SCHED_SCAN_PLAN_INTERVAL, 14576 req->scan_plans[i].interval) || 14577 (req->scan_plans[i].iterations && 14578 nla_put_u32(msg, NL80211_SCHED_SCAN_PLAN_ITERATIONS, 14579 req->scan_plans[i].iterations))) 14580 return -ENOBUFS; 14581 nla_nest_end(msg, scan_plan); 14582 } 14583 nla_nest_end(msg, scan_plans); 14584 14585 nla_nest_end(msg, nd); 14586 14587 return 0; 14588 } 14589 14590 static int nl80211_get_wowlan(struct sk_buff *skb, struct genl_info *info) 14591 { 14592 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 14593 struct sk_buff *msg; 14594 void *hdr; 14595 u32 size = NLMSG_DEFAULT_SIZE; 14596 14597 if (!rdev->wiphy.wowlan) 14598 return -EOPNOTSUPP; 14599 14600 if (rdev->wiphy.wowlan_config && rdev->wiphy.wowlan_config->tcp) { 14601 /* adjust size to have room for all the data */ 14602 size += rdev->wiphy.wowlan_config->tcp->tokens_size + 14603 rdev->wiphy.wowlan_config->tcp->payload_len + 14604 rdev->wiphy.wowlan_config->tcp->wake_len + 14605 rdev->wiphy.wowlan_config->tcp->wake_len / 8; 14606 } 14607 14608 msg = nlmsg_new(size, GFP_KERNEL); 14609 if (!msg) 14610 return -ENOMEM; 14611 14612 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0, 14613 NL80211_CMD_GET_WOWLAN); 14614 if (!hdr) 14615 goto nla_put_failure; 14616 14617 if (rdev->wiphy.wowlan_config) { 14618 struct nlattr *nl_wowlan; 14619 14620 nl_wowlan = nla_nest_start_noflag(msg, 14621 NL80211_ATTR_WOWLAN_TRIGGERS); 14622 if (!nl_wowlan) 14623 goto nla_put_failure; 14624 14625 if ((rdev->wiphy.wowlan_config->any && 14626 nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) || 14627 (rdev->wiphy.wowlan_config->disconnect && 14628 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) || 14629 (rdev->wiphy.wowlan_config->magic_pkt && 14630 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) || 14631 (rdev->wiphy.wowlan_config->gtk_rekey_failure && 14632 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) || 14633 (rdev->wiphy.wowlan_config->eap_identity_req && 14634 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) || 14635 (rdev->wiphy.wowlan_config->four_way_handshake && 14636 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) || 14637 (rdev->wiphy.wowlan_config->rfkill_release && 14638 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE))) 14639 goto nla_put_failure; 14640 14641 if (nl80211_send_wowlan_patterns(msg, rdev)) 14642 goto nla_put_failure; 14643 14644 if (nl80211_send_wowlan_tcp(msg, 14645 rdev->wiphy.wowlan_config->tcp)) 14646 goto nla_put_failure; 14647 14648 if (nl80211_send_wowlan_nd( 14649 msg, 14650 rdev->wiphy.wowlan_config->nd_config)) 14651 goto nla_put_failure; 14652 14653 nla_nest_end(msg, nl_wowlan); 14654 } 14655 14656 genlmsg_end(msg, hdr); 14657 return genlmsg_reply(msg, info); 14658 14659 nla_put_failure: 14660 nlmsg_free(msg); 14661 return -ENOBUFS; 14662 } 14663 14664 static int nl80211_parse_wowlan_tcp(struct cfg80211_registered_device *rdev, 14665 struct nlattr *attr, 14666 struct cfg80211_wowlan *trig) 14667 { 14668 struct nlattr *tb[NUM_NL80211_WOWLAN_TCP]; 14669 struct cfg80211_wowlan_tcp *cfg; 14670 struct nl80211_wowlan_tcp_data_token *tok = NULL; 14671 struct nl80211_wowlan_tcp_data_seq *seq = NULL; 14672 u32 size; 14673 u32 data_size, wake_size, tokens_size = 0, wake_mask_size; 14674 int err, port; 14675 14676 if (!rdev->wiphy.wowlan->tcp) 14677 return -EINVAL; 14678 14679 err = nla_parse_nested_deprecated(tb, MAX_NL80211_WOWLAN_TCP, attr, 14680 nl80211_wowlan_tcp_policy, NULL); 14681 if (err) 14682 return err; 14683 14684 if (!tb[NL80211_WOWLAN_TCP_SRC_IPV4] || 14685 !tb[NL80211_WOWLAN_TCP_DST_IPV4] || 14686 !tb[NL80211_WOWLAN_TCP_DST_MAC] || 14687 !tb[NL80211_WOWLAN_TCP_DST_PORT] || 14688 !tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD] || 14689 !tb[NL80211_WOWLAN_TCP_DATA_INTERVAL] || 14690 !tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD] || 14691 !tb[NL80211_WOWLAN_TCP_WAKE_MASK]) 14692 return -EINVAL; 14693 14694 data_size = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]); 14695 if (data_size > rdev->wiphy.wowlan->tcp->data_payload_max) 14696 return -EINVAL; 14697 14698 if (nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) > 14699 rdev->wiphy.wowlan->tcp->data_interval_max || 14700 nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) == 0) 14701 return -EINVAL; 14702 14703 wake_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]); 14704 if (wake_size > rdev->wiphy.wowlan->tcp->wake_payload_max) 14705 return -EINVAL; 14706 14707 wake_mask_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_MASK]); 14708 if (wake_mask_size != DIV_ROUND_UP(wake_size, 8)) 14709 return -EINVAL; 14710 14711 if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]) { 14712 u32 tokln = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]); 14713 14714 tok = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]); 14715 tokens_size = tokln - sizeof(*tok); 14716 14717 if (!tok->len || tokens_size % tok->len) 14718 return -EINVAL; 14719 if (!rdev->wiphy.wowlan->tcp->tok) 14720 return -EINVAL; 14721 if (tok->len > rdev->wiphy.wowlan->tcp->tok->max_len) 14722 return -EINVAL; 14723 if (tok->len < rdev->wiphy.wowlan->tcp->tok->min_len) 14724 return -EINVAL; 14725 if (tokens_size > rdev->wiphy.wowlan->tcp->tok->bufsize) 14726 return -EINVAL; 14727 if (tok->offset + tok->len > data_size) 14728 return -EINVAL; 14729 } 14730 14731 if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]) { 14732 seq = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]); 14733 if (!rdev->wiphy.wowlan->tcp->seq) 14734 return -EINVAL; 14735 if (seq->len == 0 || seq->len > 4) 14736 return -EINVAL; 14737 if (seq->len + seq->offset > data_size) 14738 return -EINVAL; 14739 } 14740 14741 size = sizeof(*cfg); 14742 size += data_size; 14743 size += wake_size + wake_mask_size; 14744 size += tokens_size; 14745 14746 cfg = kzalloc(size, GFP_KERNEL); 14747 if (!cfg) 14748 return -ENOMEM; 14749 cfg->src = nla_get_in_addr(tb[NL80211_WOWLAN_TCP_SRC_IPV4]); 14750 cfg->dst = nla_get_in_addr(tb[NL80211_WOWLAN_TCP_DST_IPV4]); 14751 memcpy(cfg->dst_mac, nla_data(tb[NL80211_WOWLAN_TCP_DST_MAC]), 14752 ETH_ALEN); 14753 port = nla_get_u16_default(tb[NL80211_WOWLAN_TCP_SRC_PORT], 0); 14754 #ifdef CONFIG_INET 14755 /* allocate a socket and port for it and use it */ 14756 err = __sock_create(wiphy_net(&rdev->wiphy), PF_INET, SOCK_STREAM, 14757 IPPROTO_TCP, &cfg->sock, 1); 14758 if (err) { 14759 kfree(cfg); 14760 return err; 14761 } 14762 if (inet_csk_get_port(cfg->sock->sk, port)) { 14763 sock_release(cfg->sock); 14764 kfree(cfg); 14765 return -EADDRINUSE; 14766 } 14767 cfg->src_port = inet_sk(cfg->sock->sk)->inet_num; 14768 #else 14769 if (!port) { 14770 kfree(cfg); 14771 return -EINVAL; 14772 } 14773 cfg->src_port = port; 14774 #endif 14775 14776 cfg->dst_port = nla_get_u16(tb[NL80211_WOWLAN_TCP_DST_PORT]); 14777 cfg->payload_len = data_size; 14778 cfg->payload = (u8 *)cfg + sizeof(*cfg) + tokens_size; 14779 memcpy((void *)cfg->payload, 14780 nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]), 14781 data_size); 14782 if (seq) 14783 cfg->payload_seq = *seq; 14784 cfg->data_interval = nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]); 14785 cfg->wake_len = wake_size; 14786 cfg->wake_data = (u8 *)cfg + sizeof(*cfg) + tokens_size + data_size; 14787 memcpy((void *)cfg->wake_data, 14788 nla_data(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]), 14789 wake_size); 14790 cfg->wake_mask = (u8 *)cfg + sizeof(*cfg) + tokens_size + 14791 data_size + wake_size; 14792 memcpy((void *)cfg->wake_mask, 14793 nla_data(tb[NL80211_WOWLAN_TCP_WAKE_MASK]), 14794 wake_mask_size); 14795 if (tok) { 14796 cfg->tokens_size = tokens_size; 14797 cfg->payload_tok = *tok; 14798 memcpy(cfg->payload_tok.token_stream, tok->token_stream, 14799 tokens_size); 14800 } 14801 14802 trig->tcp = cfg; 14803 14804 return 0; 14805 } 14806 14807 static int nl80211_parse_wowlan_nd(struct cfg80211_registered_device *rdev, 14808 const struct wiphy_wowlan_support *wowlan, 14809 struct nlattr *attr, 14810 struct cfg80211_wowlan *trig) 14811 { 14812 struct nlattr **tb; 14813 int err; 14814 14815 tb = kcalloc(NUM_NL80211_ATTR, sizeof(*tb), GFP_KERNEL); 14816 if (!tb) 14817 return -ENOMEM; 14818 14819 if (!(wowlan->flags & WIPHY_WOWLAN_NET_DETECT)) { 14820 err = -EOPNOTSUPP; 14821 goto out; 14822 } 14823 14824 err = nla_parse_nested_deprecated(tb, NL80211_ATTR_MAX, attr, 14825 nl80211_policy, NULL); 14826 if (err) 14827 goto out; 14828 14829 trig->nd_config = nl80211_parse_sched_scan(&rdev->wiphy, NULL, tb, 14830 wowlan->max_nd_match_sets); 14831 err = PTR_ERR_OR_ZERO(trig->nd_config); 14832 if (err) 14833 trig->nd_config = NULL; 14834 14835 out: 14836 kfree(tb); 14837 return err; 14838 } 14839 14840 static int nl80211_set_wowlan(struct sk_buff *skb, struct genl_info *info) 14841 { 14842 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 14843 struct nlattr *tb[NUM_NL80211_WOWLAN_TRIG]; 14844 struct cfg80211_wowlan new_triggers = {}; 14845 struct cfg80211_wowlan *ntrig; 14846 const struct wiphy_wowlan_support *wowlan = rdev->wiphy.wowlan; 14847 int err, i; 14848 bool prev_enabled = rdev->wiphy.wowlan_config; 14849 bool regular = false; 14850 14851 if (!wowlan) 14852 return -EOPNOTSUPP; 14853 14854 if (!info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]) { 14855 cfg80211_rdev_free_wowlan(rdev); 14856 rdev->wiphy.wowlan_config = NULL; 14857 goto set_wakeup; 14858 } 14859 14860 err = nla_parse_nested_deprecated(tb, MAX_NL80211_WOWLAN_TRIG, 14861 info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS], 14862 nl80211_wowlan_policy, info->extack); 14863 if (err) 14864 return err; 14865 14866 if (tb[NL80211_WOWLAN_TRIG_ANY]) { 14867 if (!(wowlan->flags & WIPHY_WOWLAN_ANY)) 14868 return -EINVAL; 14869 new_triggers.any = true; 14870 } 14871 14872 if (tb[NL80211_WOWLAN_TRIG_DISCONNECT]) { 14873 if (!(wowlan->flags & WIPHY_WOWLAN_DISCONNECT)) 14874 return -EINVAL; 14875 new_triggers.disconnect = true; 14876 regular = true; 14877 } 14878 14879 if (tb[NL80211_WOWLAN_TRIG_MAGIC_PKT]) { 14880 if (!(wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT)) 14881 return -EINVAL; 14882 new_triggers.magic_pkt = true; 14883 regular = true; 14884 } 14885 14886 if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED]) 14887 return -EINVAL; 14888 14889 if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE]) { 14890 if (!(wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE)) 14891 return -EINVAL; 14892 new_triggers.gtk_rekey_failure = true; 14893 regular = true; 14894 } 14895 14896 if (tb[NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST]) { 14897 if (!(wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ)) 14898 return -EINVAL; 14899 new_triggers.eap_identity_req = true; 14900 regular = true; 14901 } 14902 14903 if (tb[NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE]) { 14904 if (!(wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE)) 14905 return -EINVAL; 14906 new_triggers.four_way_handshake = true; 14907 regular = true; 14908 } 14909 14910 if (tb[NL80211_WOWLAN_TRIG_RFKILL_RELEASE]) { 14911 if (!(wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE)) 14912 return -EINVAL; 14913 new_triggers.rfkill_release = true; 14914 regular = true; 14915 } 14916 14917 if (tb[NL80211_WOWLAN_TRIG_PKT_PATTERN]) { 14918 struct nlattr *pat; 14919 int n_patterns = 0; 14920 int rem, pat_len, mask_len, pkt_offset; 14921 struct nlattr *pat_tb[NUM_NL80211_PKTPAT]; 14922 14923 regular = true; 14924 14925 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN], 14926 rem) 14927 n_patterns++; 14928 if (n_patterns > wowlan->n_patterns) 14929 return -EINVAL; 14930 14931 new_triggers.patterns = kcalloc(n_patterns, 14932 sizeof(new_triggers.patterns[0]), 14933 GFP_KERNEL); 14934 if (!new_triggers.patterns) 14935 return -ENOMEM; 14936 14937 new_triggers.n_patterns = n_patterns; 14938 i = 0; 14939 14940 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN], 14941 rem) { 14942 u8 *mask_pat; 14943 14944 err = nla_parse_nested_deprecated(pat_tb, 14945 MAX_NL80211_PKTPAT, 14946 pat, 14947 nl80211_packet_pattern_policy, 14948 info->extack); 14949 if (err) 14950 goto error; 14951 14952 err = -EINVAL; 14953 if (!pat_tb[NL80211_PKTPAT_MASK] || 14954 !pat_tb[NL80211_PKTPAT_PATTERN]) 14955 goto error; 14956 pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]); 14957 mask_len = DIV_ROUND_UP(pat_len, 8); 14958 if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len) 14959 goto error; 14960 if (pat_len > wowlan->pattern_max_len || 14961 pat_len < wowlan->pattern_min_len) 14962 goto error; 14963 14964 pkt_offset = 14965 nla_get_u32_default(pat_tb[NL80211_PKTPAT_OFFSET], 14966 0); 14967 if (pkt_offset > wowlan->max_pkt_offset) 14968 goto error; 14969 new_triggers.patterns[i].pkt_offset = pkt_offset; 14970 14971 mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL); 14972 if (!mask_pat) { 14973 err = -ENOMEM; 14974 goto error; 14975 } 14976 new_triggers.patterns[i].mask = mask_pat; 14977 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]), 14978 mask_len); 14979 mask_pat += mask_len; 14980 new_triggers.patterns[i].pattern = mask_pat; 14981 new_triggers.patterns[i].pattern_len = pat_len; 14982 memcpy(mask_pat, 14983 nla_data(pat_tb[NL80211_PKTPAT_PATTERN]), 14984 pat_len); 14985 i++; 14986 } 14987 } 14988 14989 if (tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION]) { 14990 regular = true; 14991 err = nl80211_parse_wowlan_tcp( 14992 rdev, tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION], 14993 &new_triggers); 14994 if (err) 14995 goto error; 14996 } 14997 14998 if (tb[NL80211_WOWLAN_TRIG_NET_DETECT]) { 14999 regular = true; 15000 err = nl80211_parse_wowlan_nd( 15001 rdev, wowlan, tb[NL80211_WOWLAN_TRIG_NET_DETECT], 15002 &new_triggers); 15003 if (err) 15004 goto error; 15005 } 15006 15007 /* The 'any' trigger means the device continues operating more or less 15008 * as in its normal operation mode and wakes up the host on most of the 15009 * normal interrupts (like packet RX, ...) 15010 * It therefore makes little sense to combine with the more constrained 15011 * wakeup trigger modes. 15012 */ 15013 if (new_triggers.any && regular) { 15014 err = -EINVAL; 15015 goto error; 15016 } 15017 15018 ntrig = kmemdup(&new_triggers, sizeof(new_triggers), GFP_KERNEL); 15019 if (!ntrig) { 15020 err = -ENOMEM; 15021 goto error; 15022 } 15023 cfg80211_rdev_free_wowlan(rdev); 15024 rdev->wiphy.wowlan_config = ntrig; 15025 15026 set_wakeup: 15027 if (rdev->ops->set_wakeup && 15028 prev_enabled != !!rdev->wiphy.wowlan_config) 15029 rdev_set_wakeup(rdev, rdev->wiphy.wowlan_config); 15030 15031 return 0; 15032 error: 15033 for (i = 0; i < new_triggers.n_patterns; i++) 15034 kfree(new_triggers.patterns[i].mask); 15035 kfree(new_triggers.patterns); 15036 if (new_triggers.tcp && new_triggers.tcp->sock) 15037 sock_release(new_triggers.tcp->sock); 15038 kfree(new_triggers.tcp); 15039 kfree(new_triggers.nd_config); 15040 return err; 15041 } 15042 #endif 15043 15044 static int nl80211_send_coalesce_rules(struct sk_buff *msg, 15045 struct cfg80211_registered_device *rdev) 15046 { 15047 struct nlattr *nl_pats, *nl_pat, *nl_rule, *nl_rules; 15048 int i, j, pat_len; 15049 struct cfg80211_coalesce_rules *rule; 15050 15051 if (!rdev->coalesce->n_rules) 15052 return 0; 15053 15054 nl_rules = nla_nest_start_noflag(msg, NL80211_ATTR_COALESCE_RULE); 15055 if (!nl_rules) 15056 return -ENOBUFS; 15057 15058 for (i = 0; i < rdev->coalesce->n_rules; i++) { 15059 nl_rule = nla_nest_start_noflag(msg, i + 1); 15060 if (!nl_rule) 15061 return -ENOBUFS; 15062 15063 rule = &rdev->coalesce->rules[i]; 15064 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_DELAY, 15065 rule->delay)) 15066 return -ENOBUFS; 15067 15068 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_CONDITION, 15069 rule->condition)) 15070 return -ENOBUFS; 15071 15072 nl_pats = nla_nest_start_noflag(msg, 15073 NL80211_ATTR_COALESCE_RULE_PKT_PATTERN); 15074 if (!nl_pats) 15075 return -ENOBUFS; 15076 15077 for (j = 0; j < rule->n_patterns; j++) { 15078 nl_pat = nla_nest_start_noflag(msg, j + 1); 15079 if (!nl_pat) 15080 return -ENOBUFS; 15081 pat_len = rule->patterns[j].pattern_len; 15082 if (nla_put(msg, NL80211_PKTPAT_MASK, 15083 DIV_ROUND_UP(pat_len, 8), 15084 rule->patterns[j].mask) || 15085 nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len, 15086 rule->patterns[j].pattern) || 15087 nla_put_u32(msg, NL80211_PKTPAT_OFFSET, 15088 rule->patterns[j].pkt_offset)) 15089 return -ENOBUFS; 15090 nla_nest_end(msg, nl_pat); 15091 } 15092 nla_nest_end(msg, nl_pats); 15093 nla_nest_end(msg, nl_rule); 15094 } 15095 nla_nest_end(msg, nl_rules); 15096 15097 return 0; 15098 } 15099 15100 static int nl80211_get_coalesce(struct sk_buff *skb, struct genl_info *info) 15101 { 15102 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 15103 struct sk_buff *msg; 15104 void *hdr; 15105 15106 if (!rdev->wiphy.coalesce) 15107 return -EOPNOTSUPP; 15108 15109 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 15110 if (!msg) 15111 return -ENOMEM; 15112 15113 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0, 15114 NL80211_CMD_GET_COALESCE); 15115 if (!hdr) 15116 goto nla_put_failure; 15117 15118 if (rdev->coalesce && nl80211_send_coalesce_rules(msg, rdev)) 15119 goto nla_put_failure; 15120 15121 genlmsg_end(msg, hdr); 15122 return genlmsg_reply(msg, info); 15123 15124 nla_put_failure: 15125 nlmsg_free(msg); 15126 return -ENOBUFS; 15127 } 15128 15129 void cfg80211_free_coalesce(struct cfg80211_coalesce *coalesce) 15130 { 15131 int i, j; 15132 struct cfg80211_coalesce_rules *rule; 15133 15134 if (!coalesce) 15135 return; 15136 15137 for (i = 0; i < coalesce->n_rules; i++) { 15138 rule = &coalesce->rules[i]; 15139 for (j = 0; j < rule->n_patterns; j++) 15140 kfree(rule->patterns[j].mask); 15141 kfree(rule->patterns); 15142 } 15143 kfree(coalesce); 15144 } 15145 15146 static int nl80211_parse_coalesce_rule(struct cfg80211_registered_device *rdev, 15147 struct nlattr *rule, 15148 struct cfg80211_coalesce_rules *new_rule) 15149 { 15150 int err, i; 15151 const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce; 15152 struct nlattr *tb[NUM_NL80211_ATTR_COALESCE_RULE], *pat; 15153 int rem, pat_len, mask_len, pkt_offset, n_patterns = 0; 15154 struct nlattr *pat_tb[NUM_NL80211_PKTPAT]; 15155 15156 err = nla_parse_nested_deprecated(tb, NL80211_ATTR_COALESCE_RULE_MAX, 15157 rule, nl80211_coalesce_policy, NULL); 15158 if (err) 15159 return err; 15160 15161 if (tb[NL80211_ATTR_COALESCE_RULE_DELAY]) 15162 new_rule->delay = 15163 nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_DELAY]); 15164 if (new_rule->delay > coalesce->max_delay) 15165 return -EINVAL; 15166 15167 if (tb[NL80211_ATTR_COALESCE_RULE_CONDITION]) 15168 new_rule->condition = 15169 nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_CONDITION]); 15170 15171 if (!tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN]) 15172 return -EINVAL; 15173 15174 nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN], 15175 rem) 15176 n_patterns++; 15177 if (n_patterns > coalesce->n_patterns) 15178 return -EINVAL; 15179 15180 new_rule->patterns = kcalloc(n_patterns, sizeof(new_rule->patterns[0]), 15181 GFP_KERNEL); 15182 if (!new_rule->patterns) 15183 return -ENOMEM; 15184 15185 new_rule->n_patterns = n_patterns; 15186 i = 0; 15187 15188 nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN], 15189 rem) { 15190 u8 *mask_pat; 15191 15192 err = nla_parse_nested_deprecated(pat_tb, MAX_NL80211_PKTPAT, 15193 pat, 15194 nl80211_packet_pattern_policy, 15195 NULL); 15196 if (err) 15197 return err; 15198 15199 if (!pat_tb[NL80211_PKTPAT_MASK] || 15200 !pat_tb[NL80211_PKTPAT_PATTERN]) 15201 return -EINVAL; 15202 pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]); 15203 mask_len = DIV_ROUND_UP(pat_len, 8); 15204 if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len) 15205 return -EINVAL; 15206 if (pat_len > coalesce->pattern_max_len || 15207 pat_len < coalesce->pattern_min_len) 15208 return -EINVAL; 15209 15210 pkt_offset = nla_get_u32_default(pat_tb[NL80211_PKTPAT_OFFSET], 15211 0); 15212 if (pkt_offset > coalesce->max_pkt_offset) 15213 return -EINVAL; 15214 new_rule->patterns[i].pkt_offset = pkt_offset; 15215 15216 mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL); 15217 if (!mask_pat) 15218 return -ENOMEM; 15219 15220 new_rule->patterns[i].mask = mask_pat; 15221 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]), 15222 mask_len); 15223 15224 mask_pat += mask_len; 15225 new_rule->patterns[i].pattern = mask_pat; 15226 new_rule->patterns[i].pattern_len = pat_len; 15227 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_PATTERN]), 15228 pat_len); 15229 i++; 15230 } 15231 15232 return 0; 15233 } 15234 15235 static int nl80211_set_coalesce(struct sk_buff *skb, struct genl_info *info) 15236 { 15237 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 15238 const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce; 15239 struct cfg80211_coalesce *new_coalesce; 15240 int err, rem_rule, n_rules = 0, i; 15241 struct nlattr *rule; 15242 15243 if (!rdev->wiphy.coalesce || !rdev->ops->set_coalesce) 15244 return -EOPNOTSUPP; 15245 15246 if (!info->attrs[NL80211_ATTR_COALESCE_RULE]) { 15247 cfg80211_free_coalesce(rdev->coalesce); 15248 rdev->coalesce = NULL; 15249 rdev_set_coalesce(rdev, NULL); 15250 return 0; 15251 } 15252 15253 nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE], 15254 rem_rule) 15255 n_rules++; 15256 if (n_rules > coalesce->n_rules) 15257 return -EINVAL; 15258 15259 new_coalesce = kzalloc(struct_size(new_coalesce, rules, n_rules), 15260 GFP_KERNEL); 15261 if (!new_coalesce) 15262 return -ENOMEM; 15263 15264 new_coalesce->n_rules = n_rules; 15265 i = 0; 15266 15267 nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE], 15268 rem_rule) { 15269 err = nl80211_parse_coalesce_rule(rdev, rule, 15270 &new_coalesce->rules[i]); 15271 if (err) 15272 goto error; 15273 15274 i++; 15275 } 15276 15277 err = rdev_set_coalesce(rdev, new_coalesce); 15278 if (err) 15279 goto error; 15280 15281 cfg80211_free_coalesce(rdev->coalesce); 15282 rdev->coalesce = new_coalesce; 15283 15284 return 0; 15285 error: 15286 cfg80211_free_coalesce(new_coalesce); 15287 15288 return err; 15289 } 15290 15291 static int nl80211_set_rekey_data(struct sk_buff *skb, struct genl_info *info) 15292 { 15293 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 15294 struct net_device *dev = info->user_ptr[1]; 15295 struct wireless_dev *wdev = dev->ieee80211_ptr; 15296 struct nlattr *tb[NUM_NL80211_REKEY_DATA]; 15297 struct cfg80211_gtk_rekey_data rekey_data = {}; 15298 int err; 15299 15300 if (!info->attrs[NL80211_ATTR_REKEY_DATA]) 15301 return -EINVAL; 15302 15303 err = nla_parse_nested_deprecated(tb, MAX_NL80211_REKEY_DATA, 15304 info->attrs[NL80211_ATTR_REKEY_DATA], 15305 nl80211_rekey_policy, info->extack); 15306 if (err) 15307 return err; 15308 15309 if (!tb[NL80211_REKEY_DATA_REPLAY_CTR] || !tb[NL80211_REKEY_DATA_KEK] || 15310 !tb[NL80211_REKEY_DATA_KCK]) 15311 return -EINVAL; 15312 if (nla_len(tb[NL80211_REKEY_DATA_KEK]) != NL80211_KEK_LEN && 15313 !(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_EXT_KEK_KCK && 15314 nla_len(tb[NL80211_REKEY_DATA_KEK]) == NL80211_KEK_EXT_LEN)) 15315 return -ERANGE; 15316 if (nla_len(tb[NL80211_REKEY_DATA_KCK]) != NL80211_KCK_LEN && 15317 !(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_EXT_KEK_KCK && 15318 nla_len(tb[NL80211_REKEY_DATA_KCK]) == NL80211_KCK_EXT_LEN) && 15319 !(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_EXT_KCK_32 && 15320 nla_len(tb[NL80211_REKEY_DATA_KCK]) == NL80211_KCK_EXT_LEN_32)) 15321 return -ERANGE; 15322 15323 rekey_data.kek = nla_data(tb[NL80211_REKEY_DATA_KEK]); 15324 rekey_data.kck = nla_data(tb[NL80211_REKEY_DATA_KCK]); 15325 rekey_data.replay_ctr = nla_data(tb[NL80211_REKEY_DATA_REPLAY_CTR]); 15326 rekey_data.kek_len = nla_len(tb[NL80211_REKEY_DATA_KEK]); 15327 rekey_data.kck_len = nla_len(tb[NL80211_REKEY_DATA_KCK]); 15328 if (tb[NL80211_REKEY_DATA_AKM]) 15329 rekey_data.akm = nla_get_u32(tb[NL80211_REKEY_DATA_AKM]); 15330 15331 if (!wdev->connected) 15332 return -ENOTCONN; 15333 15334 if (!rdev->ops->set_rekey_data) 15335 return -EOPNOTSUPP; 15336 15337 return rdev_set_rekey_data(rdev, dev, &rekey_data); 15338 } 15339 15340 static int nl80211_register_unexpected_frame(struct sk_buff *skb, 15341 struct genl_info *info) 15342 { 15343 struct net_device *dev = info->user_ptr[1]; 15344 struct wireless_dev *wdev = dev->ieee80211_ptr; 15345 15346 if (wdev->iftype != NL80211_IFTYPE_AP && 15347 wdev->iftype != NL80211_IFTYPE_P2P_GO) 15348 return -EINVAL; 15349 15350 if (wdev->ap_unexpected_nlportid) 15351 return -EBUSY; 15352 15353 wdev->ap_unexpected_nlportid = info->snd_portid; 15354 return 0; 15355 } 15356 15357 static int nl80211_probe_client(struct sk_buff *skb, 15358 struct genl_info *info) 15359 { 15360 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 15361 struct net_device *dev = info->user_ptr[1]; 15362 struct wireless_dev *wdev = dev->ieee80211_ptr; 15363 struct sk_buff *msg; 15364 void *hdr; 15365 const u8 *addr; 15366 u64 cookie; 15367 int err; 15368 15369 if (wdev->iftype != NL80211_IFTYPE_AP && 15370 wdev->iftype != NL80211_IFTYPE_P2P_GO) 15371 return -EOPNOTSUPP; 15372 15373 if (!info->attrs[NL80211_ATTR_MAC]) 15374 return -EINVAL; 15375 15376 if (!rdev->ops->probe_client) 15377 return -EOPNOTSUPP; 15378 15379 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 15380 if (!msg) 15381 return -ENOMEM; 15382 15383 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0, 15384 NL80211_CMD_PROBE_CLIENT); 15385 if (!hdr) { 15386 err = -ENOBUFS; 15387 goto free_msg; 15388 } 15389 15390 addr = nla_data(info->attrs[NL80211_ATTR_MAC]); 15391 15392 err = rdev_probe_client(rdev, dev, addr, &cookie); 15393 if (err) 15394 goto free_msg; 15395 15396 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie, 15397 NL80211_ATTR_PAD)) 15398 goto nla_put_failure; 15399 15400 genlmsg_end(msg, hdr); 15401 15402 return genlmsg_reply(msg, info); 15403 15404 nla_put_failure: 15405 err = -ENOBUFS; 15406 free_msg: 15407 nlmsg_free(msg); 15408 return err; 15409 } 15410 15411 static int nl80211_register_beacons(struct sk_buff *skb, struct genl_info *info) 15412 { 15413 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 15414 struct cfg80211_beacon_registration *reg, *nreg; 15415 int rv; 15416 15417 if (!(rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS)) 15418 return -EOPNOTSUPP; 15419 15420 nreg = kzalloc(sizeof(*nreg), GFP_KERNEL); 15421 if (!nreg) 15422 return -ENOMEM; 15423 15424 /* First, check if already registered. */ 15425 spin_lock_bh(&rdev->beacon_registrations_lock); 15426 list_for_each_entry(reg, &rdev->beacon_registrations, list) { 15427 if (reg->nlportid == info->snd_portid) { 15428 rv = -EALREADY; 15429 goto out_err; 15430 } 15431 } 15432 /* Add it to the list */ 15433 nreg->nlportid = info->snd_portid; 15434 list_add(&nreg->list, &rdev->beacon_registrations); 15435 15436 spin_unlock_bh(&rdev->beacon_registrations_lock); 15437 15438 return 0; 15439 out_err: 15440 spin_unlock_bh(&rdev->beacon_registrations_lock); 15441 kfree(nreg); 15442 return rv; 15443 } 15444 15445 static int nl80211_start_p2p_device(struct sk_buff *skb, struct genl_info *info) 15446 { 15447 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 15448 struct wireless_dev *wdev = info->user_ptr[1]; 15449 int err; 15450 15451 if (!rdev->ops->start_p2p_device) 15452 return -EOPNOTSUPP; 15453 15454 if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE) 15455 return -EOPNOTSUPP; 15456 15457 if (wdev_running(wdev)) 15458 return 0; 15459 15460 if (rfkill_blocked(rdev->wiphy.rfkill)) 15461 return -ERFKILL; 15462 15463 err = rdev_start_p2p_device(rdev, wdev); 15464 if (err) 15465 return err; 15466 15467 wdev->is_running = true; 15468 rdev->opencount++; 15469 15470 return 0; 15471 } 15472 15473 static int nl80211_stop_p2p_device(struct sk_buff *skb, struct genl_info *info) 15474 { 15475 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 15476 struct wireless_dev *wdev = info->user_ptr[1]; 15477 15478 if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE) 15479 return -EOPNOTSUPP; 15480 15481 if (!rdev->ops->stop_p2p_device) 15482 return -EOPNOTSUPP; 15483 15484 cfg80211_stop_p2p_device(rdev, wdev); 15485 15486 return 0; 15487 } 15488 15489 static struct ieee80211_channel *nl80211_get_nan_channel(struct wiphy *wiphy, 15490 int freq) 15491 { 15492 struct ieee80211_channel *chan; 15493 struct cfg80211_chan_def def; 15494 15495 /* Check if the frequency is valid for NAN */ 15496 if (freq != 5220 && freq != 5745 && freq != 2437) 15497 return NULL; 15498 15499 chan = ieee80211_get_channel(wiphy, freq); 15500 if (!chan) 15501 return NULL; 15502 15503 cfg80211_chandef_create(&def, chan, NL80211_CHAN_NO_HT); 15504 15505 /* Check if the channel is allowed */ 15506 if (cfg80211_reg_can_beacon(wiphy, &def, NL80211_IFTYPE_NAN)) 15507 return chan; 15508 15509 return NULL; 15510 } 15511 15512 static int nl80211_parse_nan_band_config(struct wiphy *wiphy, 15513 struct nlattr **tb, 15514 struct cfg80211_nan_band_config *cfg, 15515 enum nl80211_band band) 15516 { 15517 if (BIT(band) & ~(u32)wiphy->nan_supported_bands) 15518 return -EINVAL; 15519 15520 if (tb[NL80211_NAN_BAND_CONF_FREQ]) { 15521 u16 freq = nla_get_u16(tb[NL80211_NAN_BAND_CONF_FREQ]); 15522 15523 if (band != NL80211_BAND_5GHZ) 15524 return -EINVAL; 15525 15526 cfg->chan = nl80211_get_nan_channel(wiphy, freq); 15527 if (!cfg->chan) 15528 return -EINVAL; 15529 } 15530 15531 if (tb[NL80211_NAN_BAND_CONF_RSSI_CLOSE]) { 15532 cfg->rssi_close = 15533 nla_get_s8(tb[NL80211_NAN_BAND_CONF_RSSI_CLOSE]); 15534 if (!tb[NL80211_NAN_BAND_CONF_RSSI_MIDDLE]) 15535 return -EINVAL; 15536 } 15537 15538 if (tb[NL80211_NAN_BAND_CONF_RSSI_MIDDLE]) { 15539 cfg->rssi_middle = 15540 nla_get_s8(tb[NL80211_NAN_BAND_CONF_RSSI_MIDDLE]); 15541 if (!cfg->rssi_close || cfg->rssi_middle >= cfg->rssi_close) 15542 return -EINVAL; 15543 } 15544 15545 if (tb[NL80211_NAN_BAND_CONF_WAKE_DW]) { 15546 cfg->awake_dw_interval = 15547 nla_get_u8(tb[NL80211_NAN_BAND_CONF_WAKE_DW]); 15548 15549 if (band == NL80211_BAND_2GHZ && cfg->awake_dw_interval == 0) 15550 return -EINVAL; 15551 } 15552 15553 cfg->disable_scan = 15554 nla_get_flag(tb[NL80211_NAN_BAND_CONF_DISABLE_SCAN]); 15555 return 0; 15556 } 15557 15558 static int nl80211_parse_nan_conf(struct wiphy *wiphy, 15559 struct genl_info *info, 15560 struct cfg80211_nan_conf *conf, 15561 u32 *changed_flags) 15562 { 15563 struct nlattr *attrs[NL80211_NAN_CONF_ATTR_MAX + 1]; 15564 int err, rem; 15565 u32 changed = 0; 15566 struct nlattr *band_config; 15567 15568 if (info->attrs[NL80211_ATTR_NAN_MASTER_PREF]) { 15569 conf->master_pref = 15570 nla_get_u8(info->attrs[NL80211_ATTR_NAN_MASTER_PREF]); 15571 15572 changed |= CFG80211_NAN_CONF_CHANGED_PREF; 15573 } 15574 15575 if (info->attrs[NL80211_ATTR_BANDS]) { 15576 u32 bands = nla_get_u32(info->attrs[NL80211_ATTR_BANDS]); 15577 15578 if (bands & ~(u32)wiphy->nan_supported_bands) 15579 return -EOPNOTSUPP; 15580 15581 if (bands && !(bands & BIT(NL80211_BAND_2GHZ))) 15582 return -EINVAL; 15583 15584 conf->bands = bands; 15585 changed |= CFG80211_NAN_CONF_CHANGED_BANDS; 15586 } 15587 15588 conf->band_cfgs[NL80211_BAND_2GHZ].awake_dw_interval = 1; 15589 if (conf->bands & BIT(NL80211_BAND_5GHZ) || !conf->bands) 15590 conf->band_cfgs[NL80211_BAND_5GHZ].awake_dw_interval = 1; 15591 15592 /* On 2.4 GHz band use channel 6 */ 15593 conf->band_cfgs[NL80211_BAND_2GHZ].chan = 15594 nl80211_get_nan_channel(wiphy, 2437); 15595 if (!conf->band_cfgs[NL80211_BAND_2GHZ].chan) 15596 return -EINVAL; 15597 15598 if (!info->attrs[NL80211_ATTR_NAN_CONFIG]) 15599 goto out; 15600 15601 err = nla_parse_nested(attrs, NL80211_NAN_CONF_ATTR_MAX, 15602 info->attrs[NL80211_ATTR_NAN_CONFIG], NULL, 15603 info->extack); 15604 if (err) 15605 return err; 15606 15607 changed |= CFG80211_NAN_CONF_CHANGED_CONFIG; 15608 if (attrs[NL80211_NAN_CONF_CLUSTER_ID]) 15609 conf->cluster_id = 15610 nla_data(attrs[NL80211_NAN_CONF_CLUSTER_ID]); 15611 15612 if (attrs[NL80211_NAN_CONF_EXTRA_ATTRS]) { 15613 conf->extra_nan_attrs = 15614 nla_data(attrs[NL80211_NAN_CONF_EXTRA_ATTRS]); 15615 conf->extra_nan_attrs_len = 15616 nla_len(attrs[NL80211_NAN_CONF_EXTRA_ATTRS]); 15617 } 15618 15619 if (attrs[NL80211_NAN_CONF_VENDOR_ELEMS]) { 15620 conf->vendor_elems = 15621 nla_data(attrs[NL80211_NAN_CONF_VENDOR_ELEMS]); 15622 conf->vendor_elems_len = 15623 nla_len(attrs[NL80211_NAN_CONF_VENDOR_ELEMS]); 15624 } 15625 15626 if (attrs[NL80211_NAN_CONF_BAND_CONFIGS]) { 15627 nla_for_each_nested(band_config, 15628 attrs[NL80211_NAN_CONF_BAND_CONFIGS], 15629 rem) { 15630 enum nl80211_band band; 15631 struct cfg80211_nan_band_config *cfg; 15632 struct nlattr *tb[NL80211_NAN_BAND_CONF_ATTR_MAX + 1]; 15633 15634 err = nla_parse_nested(tb, 15635 NL80211_NAN_BAND_CONF_ATTR_MAX, 15636 band_config, NULL, 15637 info->extack); 15638 if (err) 15639 return err; 15640 15641 if (!tb[NL80211_NAN_BAND_CONF_BAND]) 15642 return -EINVAL; 15643 15644 band = nla_get_u8(tb[NL80211_NAN_BAND_CONF_BAND]); 15645 if (conf->bands && !(conf->bands & BIT(band))) 15646 return -EINVAL; 15647 15648 cfg = &conf->band_cfgs[band]; 15649 15650 err = nl80211_parse_nan_band_config(wiphy, tb, cfg, 15651 band); 15652 if (err) 15653 return err; 15654 } 15655 } 15656 15657 if (attrs[NL80211_NAN_CONF_SCAN_PERIOD]) 15658 conf->scan_period = 15659 nla_get_u16(attrs[NL80211_NAN_CONF_SCAN_PERIOD]); 15660 15661 if (attrs[NL80211_NAN_CONF_SCAN_DWELL_TIME]) 15662 conf->scan_dwell_time = 15663 nla_get_u16(attrs[NL80211_NAN_CONF_SCAN_DWELL_TIME]); 15664 15665 if (attrs[NL80211_NAN_CONF_DISCOVERY_BEACON_INTERVAL]) 15666 conf->discovery_beacon_interval = 15667 nla_get_u8(attrs[NL80211_NAN_CONF_DISCOVERY_BEACON_INTERVAL]); 15668 15669 if (attrs[NL80211_NAN_CONF_NOTIFY_DW]) 15670 conf->enable_dw_notification = 15671 nla_get_flag(attrs[NL80211_NAN_CONF_NOTIFY_DW]); 15672 15673 out: 15674 if (!conf->band_cfgs[NL80211_BAND_5GHZ].chan && 15675 (!conf->bands || conf->bands & BIT(NL80211_BAND_5GHZ))) { 15676 /* If no 5GHz channel is specified use default, if possible */ 15677 conf->band_cfgs[NL80211_BAND_5GHZ].chan = 15678 nl80211_get_nan_channel(wiphy, 5745); 15679 if (!conf->band_cfgs[NL80211_BAND_5GHZ].chan) 15680 conf->band_cfgs[NL80211_BAND_5GHZ].chan = 15681 nl80211_get_nan_channel(wiphy, 5220); 15682 15683 /* Return error if user space asked explicitly for 5 GHz */ 15684 if (!conf->band_cfgs[NL80211_BAND_5GHZ].chan && 15685 conf->bands & BIT(NL80211_BAND_5GHZ)) { 15686 NL_SET_ERR_MSG_ATTR(info->extack, 15687 info->attrs[NL80211_ATTR_BANDS], 15688 "5 GHz band operation is not allowed"); 15689 return -EINVAL; 15690 } 15691 } 15692 15693 if (changed_flags) 15694 *changed_flags = changed; 15695 15696 return 0; 15697 } 15698 15699 static int nl80211_start_nan(struct sk_buff *skb, struct genl_info *info) 15700 { 15701 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 15702 struct wireless_dev *wdev = info->user_ptr[1]; 15703 struct cfg80211_nan_conf conf = {}; 15704 int err; 15705 15706 if (wdev->iftype != NL80211_IFTYPE_NAN) 15707 return -EOPNOTSUPP; 15708 15709 if (wdev_running(wdev)) 15710 return -EEXIST; 15711 15712 if (rfkill_blocked(rdev->wiphy.rfkill)) 15713 return -ERFKILL; 15714 15715 /* Master preference is mandatory for START_NAN */ 15716 if (!info->attrs[NL80211_ATTR_NAN_MASTER_PREF]) 15717 return -EINVAL; 15718 15719 err = nl80211_parse_nan_conf(&rdev->wiphy, info, &conf, NULL); 15720 if (err) 15721 return err; 15722 15723 err = rdev_start_nan(rdev, wdev, &conf); 15724 if (err) 15725 return err; 15726 15727 wdev->is_running = true; 15728 rdev->opencount++; 15729 15730 return 0; 15731 } 15732 15733 static int nl80211_stop_nan(struct sk_buff *skb, struct genl_info *info) 15734 { 15735 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 15736 struct wireless_dev *wdev = info->user_ptr[1]; 15737 15738 if (wdev->iftype != NL80211_IFTYPE_NAN) 15739 return -EOPNOTSUPP; 15740 15741 cfg80211_stop_nan(rdev, wdev); 15742 15743 return 0; 15744 } 15745 15746 static int validate_nan_filter(struct nlattr *filter_attr) 15747 { 15748 struct nlattr *attr; 15749 int len = 0, n_entries = 0, rem; 15750 15751 nla_for_each_nested(attr, filter_attr, rem) { 15752 len += nla_len(attr); 15753 n_entries++; 15754 } 15755 15756 if (len >= U8_MAX) 15757 return -EINVAL; 15758 15759 return n_entries; 15760 } 15761 15762 static int handle_nan_filter(struct nlattr *attr_filter, 15763 struct cfg80211_nan_func *func, 15764 bool tx) 15765 { 15766 struct nlattr *attr; 15767 int n_entries, rem, i; 15768 struct cfg80211_nan_func_filter *filter; 15769 15770 n_entries = validate_nan_filter(attr_filter); 15771 if (n_entries < 0) 15772 return n_entries; 15773 15774 BUILD_BUG_ON(sizeof(*func->rx_filters) != sizeof(*func->tx_filters)); 15775 15776 filter = kcalloc(n_entries, sizeof(*func->rx_filters), GFP_KERNEL); 15777 if (!filter) 15778 return -ENOMEM; 15779 15780 i = 0; 15781 nla_for_each_nested(attr, attr_filter, rem) { 15782 filter[i].filter = nla_memdup(attr, GFP_KERNEL); 15783 if (!filter[i].filter) 15784 goto err; 15785 15786 filter[i].len = nla_len(attr); 15787 i++; 15788 } 15789 if (tx) { 15790 func->num_tx_filters = n_entries; 15791 func->tx_filters = filter; 15792 } else { 15793 func->num_rx_filters = n_entries; 15794 func->rx_filters = filter; 15795 } 15796 15797 return 0; 15798 15799 err: 15800 i = 0; 15801 nla_for_each_nested(attr, attr_filter, rem) { 15802 kfree(filter[i].filter); 15803 i++; 15804 } 15805 kfree(filter); 15806 return -ENOMEM; 15807 } 15808 15809 static int nl80211_nan_add_func(struct sk_buff *skb, 15810 struct genl_info *info) 15811 { 15812 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 15813 struct wireless_dev *wdev = info->user_ptr[1]; 15814 struct nlattr *tb[NUM_NL80211_NAN_FUNC_ATTR], *func_attr; 15815 struct cfg80211_nan_func *func; 15816 struct sk_buff *msg = NULL; 15817 void *hdr = NULL; 15818 int err = 0; 15819 15820 if (wdev->iftype != NL80211_IFTYPE_NAN) 15821 return -EOPNOTSUPP; 15822 15823 if (!wdev_running(wdev)) 15824 return -ENOTCONN; 15825 15826 if (!info->attrs[NL80211_ATTR_NAN_FUNC]) 15827 return -EINVAL; 15828 15829 err = nla_parse_nested_deprecated(tb, NL80211_NAN_FUNC_ATTR_MAX, 15830 info->attrs[NL80211_ATTR_NAN_FUNC], 15831 nl80211_nan_func_policy, 15832 info->extack); 15833 if (err) 15834 return err; 15835 15836 func = kzalloc(sizeof(*func), GFP_KERNEL); 15837 if (!func) 15838 return -ENOMEM; 15839 15840 func->cookie = cfg80211_assign_cookie(rdev); 15841 15842 if (!tb[NL80211_NAN_FUNC_TYPE]) { 15843 err = -EINVAL; 15844 goto out; 15845 } 15846 15847 15848 func->type = nla_get_u8(tb[NL80211_NAN_FUNC_TYPE]); 15849 15850 if (!tb[NL80211_NAN_FUNC_SERVICE_ID]) { 15851 err = -EINVAL; 15852 goto out; 15853 } 15854 15855 memcpy(func->service_id, nla_data(tb[NL80211_NAN_FUNC_SERVICE_ID]), 15856 sizeof(func->service_id)); 15857 15858 func->close_range = 15859 nla_get_flag(tb[NL80211_NAN_FUNC_CLOSE_RANGE]); 15860 15861 if (tb[NL80211_NAN_FUNC_SERVICE_INFO]) { 15862 func->serv_spec_info_len = 15863 nla_len(tb[NL80211_NAN_FUNC_SERVICE_INFO]); 15864 func->serv_spec_info = 15865 kmemdup(nla_data(tb[NL80211_NAN_FUNC_SERVICE_INFO]), 15866 func->serv_spec_info_len, 15867 GFP_KERNEL); 15868 if (!func->serv_spec_info) { 15869 err = -ENOMEM; 15870 goto out; 15871 } 15872 } 15873 15874 if (tb[NL80211_NAN_FUNC_TTL]) 15875 func->ttl = nla_get_u32(tb[NL80211_NAN_FUNC_TTL]); 15876 15877 switch (func->type) { 15878 case NL80211_NAN_FUNC_PUBLISH: 15879 if (!tb[NL80211_NAN_FUNC_PUBLISH_TYPE]) { 15880 err = -EINVAL; 15881 goto out; 15882 } 15883 15884 func->publish_type = 15885 nla_get_u8(tb[NL80211_NAN_FUNC_PUBLISH_TYPE]); 15886 func->publish_bcast = 15887 nla_get_flag(tb[NL80211_NAN_FUNC_PUBLISH_BCAST]); 15888 15889 if ((!(func->publish_type & NL80211_NAN_SOLICITED_PUBLISH)) && 15890 func->publish_bcast) { 15891 err = -EINVAL; 15892 goto out; 15893 } 15894 break; 15895 case NL80211_NAN_FUNC_SUBSCRIBE: 15896 func->subscribe_active = 15897 nla_get_flag(tb[NL80211_NAN_FUNC_SUBSCRIBE_ACTIVE]); 15898 break; 15899 case NL80211_NAN_FUNC_FOLLOW_UP: 15900 if (!tb[NL80211_NAN_FUNC_FOLLOW_UP_ID] || 15901 !tb[NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID] || 15902 !tb[NL80211_NAN_FUNC_FOLLOW_UP_DEST]) { 15903 err = -EINVAL; 15904 goto out; 15905 } 15906 15907 func->followup_id = 15908 nla_get_u8(tb[NL80211_NAN_FUNC_FOLLOW_UP_ID]); 15909 func->followup_reqid = 15910 nla_get_u8(tb[NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID]); 15911 memcpy(func->followup_dest.addr, 15912 nla_data(tb[NL80211_NAN_FUNC_FOLLOW_UP_DEST]), 15913 sizeof(func->followup_dest.addr)); 15914 if (func->ttl) { 15915 err = -EINVAL; 15916 goto out; 15917 } 15918 break; 15919 default: 15920 err = -EINVAL; 15921 goto out; 15922 } 15923 15924 if (tb[NL80211_NAN_FUNC_SRF]) { 15925 struct nlattr *srf_tb[NUM_NL80211_NAN_SRF_ATTR]; 15926 15927 err = nla_parse_nested_deprecated(srf_tb, 15928 NL80211_NAN_SRF_ATTR_MAX, 15929 tb[NL80211_NAN_FUNC_SRF], 15930 nl80211_nan_srf_policy, 15931 info->extack); 15932 if (err) 15933 goto out; 15934 15935 func->srf_include = 15936 nla_get_flag(srf_tb[NL80211_NAN_SRF_INCLUDE]); 15937 15938 if (srf_tb[NL80211_NAN_SRF_BF]) { 15939 if (srf_tb[NL80211_NAN_SRF_MAC_ADDRS] || 15940 !srf_tb[NL80211_NAN_SRF_BF_IDX]) { 15941 err = -EINVAL; 15942 goto out; 15943 } 15944 15945 func->srf_bf_len = 15946 nla_len(srf_tb[NL80211_NAN_SRF_BF]); 15947 func->srf_bf = 15948 kmemdup(nla_data(srf_tb[NL80211_NAN_SRF_BF]), 15949 func->srf_bf_len, GFP_KERNEL); 15950 if (!func->srf_bf) { 15951 err = -ENOMEM; 15952 goto out; 15953 } 15954 15955 func->srf_bf_idx = 15956 nla_get_u8(srf_tb[NL80211_NAN_SRF_BF_IDX]); 15957 } else { 15958 struct nlattr *attr, *mac_attr = 15959 srf_tb[NL80211_NAN_SRF_MAC_ADDRS]; 15960 int n_entries, rem, i = 0; 15961 15962 if (!mac_attr) { 15963 err = -EINVAL; 15964 goto out; 15965 } 15966 15967 n_entries = validate_acl_mac_addrs(mac_attr); 15968 if (n_entries <= 0) { 15969 err = -EINVAL; 15970 goto out; 15971 } 15972 15973 func->srf_num_macs = n_entries; 15974 func->srf_macs = 15975 kcalloc(n_entries, sizeof(*func->srf_macs), 15976 GFP_KERNEL); 15977 if (!func->srf_macs) { 15978 err = -ENOMEM; 15979 goto out; 15980 } 15981 15982 nla_for_each_nested(attr, mac_attr, rem) 15983 memcpy(func->srf_macs[i++].addr, nla_data(attr), 15984 sizeof(*func->srf_macs)); 15985 } 15986 } 15987 15988 if (tb[NL80211_NAN_FUNC_TX_MATCH_FILTER]) { 15989 err = handle_nan_filter(tb[NL80211_NAN_FUNC_TX_MATCH_FILTER], 15990 func, true); 15991 if (err) 15992 goto out; 15993 } 15994 15995 if (tb[NL80211_NAN_FUNC_RX_MATCH_FILTER]) { 15996 err = handle_nan_filter(tb[NL80211_NAN_FUNC_RX_MATCH_FILTER], 15997 func, false); 15998 if (err) 15999 goto out; 16000 } 16001 16002 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 16003 if (!msg) { 16004 err = -ENOMEM; 16005 goto out; 16006 } 16007 16008 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0, 16009 NL80211_CMD_ADD_NAN_FUNCTION); 16010 /* This can't really happen - we just allocated 4KB */ 16011 if (WARN_ON(!hdr)) { 16012 err = -ENOMEM; 16013 goto out; 16014 } 16015 16016 err = rdev_add_nan_func(rdev, wdev, func); 16017 out: 16018 if (err < 0) { 16019 cfg80211_free_nan_func(func); 16020 nlmsg_free(msg); 16021 return err; 16022 } 16023 16024 /* propagate the instance id and cookie to userspace */ 16025 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, func->cookie, 16026 NL80211_ATTR_PAD)) 16027 goto nla_put_failure; 16028 16029 func_attr = nla_nest_start_noflag(msg, NL80211_ATTR_NAN_FUNC); 16030 if (!func_attr) 16031 goto nla_put_failure; 16032 16033 if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, 16034 func->instance_id)) 16035 goto nla_put_failure; 16036 16037 nla_nest_end(msg, func_attr); 16038 16039 genlmsg_end(msg, hdr); 16040 return genlmsg_reply(msg, info); 16041 16042 nla_put_failure: 16043 nlmsg_free(msg); 16044 return -ENOBUFS; 16045 } 16046 16047 static int nl80211_nan_del_func(struct sk_buff *skb, 16048 struct genl_info *info) 16049 { 16050 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 16051 struct wireless_dev *wdev = info->user_ptr[1]; 16052 u64 cookie; 16053 16054 if (wdev->iftype != NL80211_IFTYPE_NAN) 16055 return -EOPNOTSUPP; 16056 16057 if (!wdev_running(wdev)) 16058 return -ENOTCONN; 16059 16060 if (!info->attrs[NL80211_ATTR_COOKIE]) 16061 return -EINVAL; 16062 16063 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]); 16064 16065 rdev_del_nan_func(rdev, wdev, cookie); 16066 16067 return 0; 16068 } 16069 16070 static int nl80211_nan_change_config(struct sk_buff *skb, 16071 struct genl_info *info) 16072 { 16073 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 16074 struct wireless_dev *wdev = info->user_ptr[1]; 16075 struct cfg80211_nan_conf conf = {}; 16076 u32 changed = 0; 16077 int err; 16078 16079 if (wdev->iftype != NL80211_IFTYPE_NAN) 16080 return -EOPNOTSUPP; 16081 16082 if (!wdev_running(wdev)) 16083 return -ENOTCONN; 16084 16085 err = nl80211_parse_nan_conf(&rdev->wiphy, info, &conf, &changed); 16086 if (err) 16087 return err; 16088 16089 if (!changed) 16090 return -EINVAL; 16091 16092 return rdev_nan_change_conf(rdev, wdev, &conf, changed); 16093 } 16094 16095 void cfg80211_nan_match(struct wireless_dev *wdev, 16096 struct cfg80211_nan_match_params *match, gfp_t gfp) 16097 { 16098 struct wiphy *wiphy = wdev->wiphy; 16099 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 16100 struct nlattr *match_attr, *local_func_attr, *peer_func_attr; 16101 struct sk_buff *msg; 16102 void *hdr; 16103 16104 if (WARN_ON(!match->inst_id || !match->peer_inst_id || !match->addr)) 16105 return; 16106 16107 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 16108 if (!msg) 16109 return; 16110 16111 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NAN_MATCH); 16112 if (!hdr) { 16113 nlmsg_free(msg); 16114 return; 16115 } 16116 16117 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 16118 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX, 16119 wdev->netdev->ifindex)) || 16120 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev), 16121 NL80211_ATTR_PAD)) 16122 goto nla_put_failure; 16123 16124 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, match->cookie, 16125 NL80211_ATTR_PAD) || 16126 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, match->addr)) 16127 goto nla_put_failure; 16128 16129 match_attr = nla_nest_start_noflag(msg, NL80211_ATTR_NAN_MATCH); 16130 if (!match_attr) 16131 goto nla_put_failure; 16132 16133 local_func_attr = nla_nest_start_noflag(msg, 16134 NL80211_NAN_MATCH_FUNC_LOCAL); 16135 if (!local_func_attr) 16136 goto nla_put_failure; 16137 16138 if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, match->inst_id)) 16139 goto nla_put_failure; 16140 16141 nla_nest_end(msg, local_func_attr); 16142 16143 peer_func_attr = nla_nest_start_noflag(msg, 16144 NL80211_NAN_MATCH_FUNC_PEER); 16145 if (!peer_func_attr) 16146 goto nla_put_failure; 16147 16148 if (nla_put_u8(msg, NL80211_NAN_FUNC_TYPE, match->type) || 16149 nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, match->peer_inst_id)) 16150 goto nla_put_failure; 16151 16152 if (match->info && match->info_len && 16153 nla_put(msg, NL80211_NAN_FUNC_SERVICE_INFO, match->info_len, 16154 match->info)) 16155 goto nla_put_failure; 16156 16157 nla_nest_end(msg, peer_func_attr); 16158 nla_nest_end(msg, match_attr); 16159 genlmsg_end(msg, hdr); 16160 16161 if (!wdev->owner_nlportid) 16162 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), 16163 msg, 0, NL80211_MCGRP_NAN, gfp); 16164 else 16165 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, 16166 wdev->owner_nlportid); 16167 16168 return; 16169 16170 nla_put_failure: 16171 nlmsg_free(msg); 16172 } 16173 EXPORT_SYMBOL(cfg80211_nan_match); 16174 16175 void cfg80211_nan_func_terminated(struct wireless_dev *wdev, 16176 u8 inst_id, 16177 enum nl80211_nan_func_term_reason reason, 16178 u64 cookie, gfp_t gfp) 16179 { 16180 struct wiphy *wiphy = wdev->wiphy; 16181 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 16182 struct sk_buff *msg; 16183 struct nlattr *func_attr; 16184 void *hdr; 16185 16186 if (WARN_ON(!inst_id)) 16187 return; 16188 16189 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 16190 if (!msg) 16191 return; 16192 16193 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DEL_NAN_FUNCTION); 16194 if (!hdr) { 16195 nlmsg_free(msg); 16196 return; 16197 } 16198 16199 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 16200 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX, 16201 wdev->netdev->ifindex)) || 16202 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev), 16203 NL80211_ATTR_PAD)) 16204 goto nla_put_failure; 16205 16206 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie, 16207 NL80211_ATTR_PAD)) 16208 goto nla_put_failure; 16209 16210 func_attr = nla_nest_start_noflag(msg, NL80211_ATTR_NAN_FUNC); 16211 if (!func_attr) 16212 goto nla_put_failure; 16213 16214 if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, inst_id) || 16215 nla_put_u8(msg, NL80211_NAN_FUNC_TERM_REASON, reason)) 16216 goto nla_put_failure; 16217 16218 nla_nest_end(msg, func_attr); 16219 genlmsg_end(msg, hdr); 16220 16221 if (!wdev->owner_nlportid) 16222 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), 16223 msg, 0, NL80211_MCGRP_NAN, gfp); 16224 else 16225 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, 16226 wdev->owner_nlportid); 16227 16228 return; 16229 16230 nla_put_failure: 16231 nlmsg_free(msg); 16232 } 16233 EXPORT_SYMBOL(cfg80211_nan_func_terminated); 16234 16235 static int nl80211_get_protocol_features(struct sk_buff *skb, 16236 struct genl_info *info) 16237 { 16238 void *hdr; 16239 struct sk_buff *msg; 16240 16241 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 16242 if (!msg) 16243 return -ENOMEM; 16244 16245 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0, 16246 NL80211_CMD_GET_PROTOCOL_FEATURES); 16247 if (!hdr) 16248 goto nla_put_failure; 16249 16250 if (nla_put_u32(msg, NL80211_ATTR_PROTOCOL_FEATURES, 16251 NL80211_PROTOCOL_FEATURE_SPLIT_WIPHY_DUMP)) 16252 goto nla_put_failure; 16253 16254 genlmsg_end(msg, hdr); 16255 return genlmsg_reply(msg, info); 16256 16257 nla_put_failure: 16258 kfree_skb(msg); 16259 return -ENOBUFS; 16260 } 16261 16262 static int nl80211_update_ft_ies(struct sk_buff *skb, struct genl_info *info) 16263 { 16264 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 16265 struct cfg80211_update_ft_ies_params ft_params; 16266 struct net_device *dev = info->user_ptr[1]; 16267 16268 if (!rdev->ops->update_ft_ies) 16269 return -EOPNOTSUPP; 16270 16271 if (!info->attrs[NL80211_ATTR_MDID] || 16272 !info->attrs[NL80211_ATTR_IE]) 16273 return -EINVAL; 16274 16275 memset(&ft_params, 0, sizeof(ft_params)); 16276 ft_params.md = nla_get_u16(info->attrs[NL80211_ATTR_MDID]); 16277 ft_params.ie = nla_data(info->attrs[NL80211_ATTR_IE]); 16278 ft_params.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); 16279 16280 return rdev_update_ft_ies(rdev, dev, &ft_params); 16281 } 16282 16283 static int nl80211_crit_protocol_start(struct sk_buff *skb, 16284 struct genl_info *info) 16285 { 16286 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 16287 struct wireless_dev *wdev = info->user_ptr[1]; 16288 enum nl80211_crit_proto_id proto = NL80211_CRIT_PROTO_UNSPEC; 16289 u16 duration; 16290 int ret; 16291 16292 if (!rdev->ops->crit_proto_start) 16293 return -EOPNOTSUPP; 16294 16295 if (WARN_ON(!rdev->ops->crit_proto_stop)) 16296 return -EINVAL; 16297 16298 if (rdev->crit_proto_nlportid) 16299 return -EBUSY; 16300 16301 /* determine protocol if provided */ 16302 if (info->attrs[NL80211_ATTR_CRIT_PROT_ID]) 16303 proto = nla_get_u16(info->attrs[NL80211_ATTR_CRIT_PROT_ID]); 16304 16305 if (proto >= NUM_NL80211_CRIT_PROTO) 16306 return -EINVAL; 16307 16308 /* timeout must be provided */ 16309 if (!info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION]) 16310 return -EINVAL; 16311 16312 duration = 16313 nla_get_u16(info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION]); 16314 16315 ret = rdev_crit_proto_start(rdev, wdev, proto, duration); 16316 if (!ret) 16317 rdev->crit_proto_nlportid = info->snd_portid; 16318 16319 return ret; 16320 } 16321 16322 static int nl80211_crit_protocol_stop(struct sk_buff *skb, 16323 struct genl_info *info) 16324 { 16325 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 16326 struct wireless_dev *wdev = info->user_ptr[1]; 16327 16328 if (!rdev->ops->crit_proto_stop) 16329 return -EOPNOTSUPP; 16330 16331 if (rdev->crit_proto_nlportid) { 16332 rdev->crit_proto_nlportid = 0; 16333 rdev_crit_proto_stop(rdev, wdev); 16334 } 16335 return 0; 16336 } 16337 16338 static int nl80211_vendor_check_policy(const struct wiphy_vendor_command *vcmd, 16339 struct nlattr *attr, 16340 struct netlink_ext_ack *extack) 16341 { 16342 if (vcmd->policy == VENDOR_CMD_RAW_DATA) { 16343 if (attr->nla_type & NLA_F_NESTED) { 16344 NL_SET_ERR_MSG_ATTR(extack, attr, 16345 "unexpected nested data"); 16346 return -EINVAL; 16347 } 16348 16349 return 0; 16350 } 16351 16352 if (!(attr->nla_type & NLA_F_NESTED)) { 16353 NL_SET_ERR_MSG_ATTR(extack, attr, "expected nested data"); 16354 return -EINVAL; 16355 } 16356 16357 return nla_validate_nested(attr, vcmd->maxattr, vcmd->policy, extack); 16358 } 16359 16360 static int nl80211_vendor_cmd(struct sk_buff *skb, struct genl_info *info) 16361 { 16362 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 16363 struct wireless_dev *wdev = 16364 __cfg80211_wdev_from_attrs(rdev, genl_info_net(info), 16365 info->attrs); 16366 int i, err; 16367 u32 vid, subcmd; 16368 16369 if (!rdev->wiphy.vendor_commands) 16370 return -EOPNOTSUPP; 16371 16372 if (IS_ERR(wdev)) { 16373 err = PTR_ERR(wdev); 16374 if (err != -EINVAL) 16375 return err; 16376 wdev = NULL; 16377 } else if (wdev->wiphy != &rdev->wiphy) { 16378 return -EINVAL; 16379 } 16380 16381 if (!info->attrs[NL80211_ATTR_VENDOR_ID] || 16382 !info->attrs[NL80211_ATTR_VENDOR_SUBCMD]) 16383 return -EINVAL; 16384 16385 vid = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_ID]); 16386 subcmd = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_SUBCMD]); 16387 for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) { 16388 const struct wiphy_vendor_command *vcmd; 16389 void *data = NULL; 16390 int len = 0; 16391 16392 vcmd = &rdev->wiphy.vendor_commands[i]; 16393 16394 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd) 16395 continue; 16396 16397 if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV | 16398 WIPHY_VENDOR_CMD_NEED_NETDEV)) { 16399 if (!wdev) 16400 return -EINVAL; 16401 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV && 16402 !wdev->netdev) 16403 return -EINVAL; 16404 16405 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) { 16406 if (!wdev_running(wdev)) 16407 return -ENETDOWN; 16408 } 16409 } else { 16410 wdev = NULL; 16411 } 16412 16413 if (!vcmd->doit) 16414 return -EOPNOTSUPP; 16415 16416 if (info->attrs[NL80211_ATTR_VENDOR_DATA]) { 16417 data = nla_data(info->attrs[NL80211_ATTR_VENDOR_DATA]); 16418 len = nla_len(info->attrs[NL80211_ATTR_VENDOR_DATA]); 16419 16420 err = nl80211_vendor_check_policy(vcmd, 16421 info->attrs[NL80211_ATTR_VENDOR_DATA], 16422 info->extack); 16423 if (err) 16424 return err; 16425 } 16426 16427 rdev->cur_cmd_info = info; 16428 err = vcmd->doit(&rdev->wiphy, wdev, data, len); 16429 rdev->cur_cmd_info = NULL; 16430 return err; 16431 } 16432 16433 return -EOPNOTSUPP; 16434 } 16435 16436 static int nl80211_prepare_vendor_dump(struct sk_buff *skb, 16437 struct netlink_callback *cb, 16438 struct cfg80211_registered_device **rdev, 16439 struct wireless_dev **wdev) 16440 { 16441 struct nlattr **attrbuf; 16442 u32 vid, subcmd; 16443 unsigned int i; 16444 int vcmd_idx = -1; 16445 int err; 16446 void *data = NULL; 16447 unsigned int data_len = 0; 16448 16449 if (cb->args[0]) { 16450 /* subtract the 1 again here */ 16451 struct wiphy *wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1); 16452 struct wireless_dev *tmp; 16453 16454 if (!wiphy) 16455 return -ENODEV; 16456 *rdev = wiphy_to_rdev(wiphy); 16457 *wdev = NULL; 16458 16459 if (cb->args[1]) { 16460 list_for_each_entry(tmp, &wiphy->wdev_list, list) { 16461 if (tmp->identifier == cb->args[1] - 1) { 16462 *wdev = tmp; 16463 break; 16464 } 16465 } 16466 } 16467 16468 /* keep rtnl locked in successful case */ 16469 return 0; 16470 } 16471 16472 attrbuf = kcalloc(NUM_NL80211_ATTR, sizeof(*attrbuf), GFP_KERNEL); 16473 if (!attrbuf) 16474 return -ENOMEM; 16475 16476 err = nlmsg_parse_deprecated(cb->nlh, 16477 GENL_HDRLEN + nl80211_fam.hdrsize, 16478 attrbuf, nl80211_fam.maxattr, 16479 nl80211_policy, NULL); 16480 if (err) 16481 goto out; 16482 16483 if (!attrbuf[NL80211_ATTR_VENDOR_ID] || 16484 !attrbuf[NL80211_ATTR_VENDOR_SUBCMD]) { 16485 err = -EINVAL; 16486 goto out; 16487 } 16488 16489 *wdev = __cfg80211_wdev_from_attrs(NULL, sock_net(skb->sk), attrbuf); 16490 if (IS_ERR(*wdev)) 16491 *wdev = NULL; 16492 16493 *rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk), attrbuf); 16494 if (IS_ERR(*rdev)) { 16495 err = PTR_ERR(*rdev); 16496 goto out; 16497 } 16498 16499 vid = nla_get_u32(attrbuf[NL80211_ATTR_VENDOR_ID]); 16500 subcmd = nla_get_u32(attrbuf[NL80211_ATTR_VENDOR_SUBCMD]); 16501 16502 for (i = 0; i < (*rdev)->wiphy.n_vendor_commands; i++) { 16503 const struct wiphy_vendor_command *vcmd; 16504 16505 vcmd = &(*rdev)->wiphy.vendor_commands[i]; 16506 16507 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd) 16508 continue; 16509 16510 if (!vcmd->dumpit) { 16511 err = -EOPNOTSUPP; 16512 goto out; 16513 } 16514 16515 vcmd_idx = i; 16516 break; 16517 } 16518 16519 if (vcmd_idx < 0) { 16520 err = -EOPNOTSUPP; 16521 goto out; 16522 } 16523 16524 if (attrbuf[NL80211_ATTR_VENDOR_DATA]) { 16525 data = nla_data(attrbuf[NL80211_ATTR_VENDOR_DATA]); 16526 data_len = nla_len(attrbuf[NL80211_ATTR_VENDOR_DATA]); 16527 16528 err = nl80211_vendor_check_policy( 16529 &(*rdev)->wiphy.vendor_commands[vcmd_idx], 16530 attrbuf[NL80211_ATTR_VENDOR_DATA], 16531 cb->extack); 16532 if (err) 16533 goto out; 16534 } 16535 16536 /* 0 is the first index - add 1 to parse only once */ 16537 cb->args[0] = (*rdev)->wiphy_idx + 1; 16538 /* add 1 to know if it was NULL */ 16539 cb->args[1] = *wdev ? (*wdev)->identifier + 1 : 0; 16540 cb->args[2] = vcmd_idx; 16541 cb->args[3] = (unsigned long)data; 16542 cb->args[4] = data_len; 16543 16544 /* keep rtnl locked in successful case */ 16545 err = 0; 16546 out: 16547 kfree(attrbuf); 16548 return err; 16549 } 16550 16551 static int nl80211_vendor_cmd_dump(struct sk_buff *skb, 16552 struct netlink_callback *cb) 16553 { 16554 struct cfg80211_registered_device *rdev; 16555 struct wireless_dev *wdev; 16556 unsigned int vcmd_idx; 16557 const struct wiphy_vendor_command *vcmd; 16558 void *data; 16559 int data_len; 16560 int err; 16561 struct nlattr *vendor_data; 16562 16563 rtnl_lock(); 16564 err = nl80211_prepare_vendor_dump(skb, cb, &rdev, &wdev); 16565 if (err) 16566 goto out; 16567 16568 vcmd_idx = cb->args[2]; 16569 data = (void *)cb->args[3]; 16570 data_len = cb->args[4]; 16571 vcmd = &rdev->wiphy.vendor_commands[vcmd_idx]; 16572 16573 if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV | 16574 WIPHY_VENDOR_CMD_NEED_NETDEV)) { 16575 if (!wdev) { 16576 err = -EINVAL; 16577 goto out; 16578 } 16579 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV && 16580 !wdev->netdev) { 16581 err = -EINVAL; 16582 goto out; 16583 } 16584 16585 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) { 16586 if (!wdev_running(wdev)) { 16587 err = -ENETDOWN; 16588 goto out; 16589 } 16590 } 16591 } 16592 16593 while (1) { 16594 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid, 16595 cb->nlh->nlmsg_seq, NLM_F_MULTI, 16596 NL80211_CMD_VENDOR); 16597 if (!hdr) 16598 break; 16599 16600 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 16601 (wdev && nla_put_u64_64bit(skb, NL80211_ATTR_WDEV, 16602 wdev_id(wdev), 16603 NL80211_ATTR_PAD))) { 16604 genlmsg_cancel(skb, hdr); 16605 break; 16606 } 16607 16608 vendor_data = nla_nest_start_noflag(skb, 16609 NL80211_ATTR_VENDOR_DATA); 16610 if (!vendor_data) { 16611 genlmsg_cancel(skb, hdr); 16612 break; 16613 } 16614 16615 err = vcmd->dumpit(&rdev->wiphy, wdev, skb, data, data_len, 16616 (unsigned long *)&cb->args[5]); 16617 nla_nest_end(skb, vendor_data); 16618 16619 if (err == -ENOBUFS || err == -ENOENT) { 16620 genlmsg_cancel(skb, hdr); 16621 break; 16622 } else if (err <= 0) { 16623 genlmsg_cancel(skb, hdr); 16624 goto out; 16625 } 16626 16627 genlmsg_end(skb, hdr); 16628 } 16629 16630 err = skb->len; 16631 out: 16632 rtnl_unlock(); 16633 return err; 16634 } 16635 16636 struct sk_buff *__cfg80211_alloc_reply_skb(struct wiphy *wiphy, 16637 enum nl80211_commands cmd, 16638 enum nl80211_attrs attr, 16639 int approxlen) 16640 { 16641 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 16642 16643 if (WARN_ON(!rdev->cur_cmd_info)) 16644 return NULL; 16645 16646 return __cfg80211_alloc_vendor_skb(rdev, NULL, approxlen, 16647 rdev->cur_cmd_info->snd_portid, 16648 rdev->cur_cmd_info->snd_seq, 16649 cmd, attr, NULL, GFP_KERNEL); 16650 } 16651 EXPORT_SYMBOL(__cfg80211_alloc_reply_skb); 16652 16653 int cfg80211_vendor_cmd_reply(struct sk_buff *skb) 16654 { 16655 struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0]; 16656 void *hdr = ((void **)skb->cb)[1]; 16657 struct nlattr *data = ((void **)skb->cb)[2]; 16658 16659 /* clear CB data for netlink core to own from now on */ 16660 memset(skb->cb, 0, sizeof(skb->cb)); 16661 16662 if (WARN_ON(!rdev->cur_cmd_info)) { 16663 kfree_skb(skb); 16664 return -EINVAL; 16665 } 16666 16667 nla_nest_end(skb, data); 16668 genlmsg_end(skb, hdr); 16669 return genlmsg_reply(skb, rdev->cur_cmd_info); 16670 } 16671 EXPORT_SYMBOL_GPL(cfg80211_vendor_cmd_reply); 16672 16673 unsigned int cfg80211_vendor_cmd_get_sender(struct wiphy *wiphy) 16674 { 16675 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 16676 16677 if (WARN_ON(!rdev->cur_cmd_info)) 16678 return 0; 16679 16680 return rdev->cur_cmd_info->snd_portid; 16681 } 16682 EXPORT_SYMBOL_GPL(cfg80211_vendor_cmd_get_sender); 16683 16684 static int nl80211_set_qos_map(struct sk_buff *skb, 16685 struct genl_info *info) 16686 { 16687 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 16688 struct cfg80211_qos_map *qos_map = NULL; 16689 struct net_device *dev = info->user_ptr[1]; 16690 u8 *pos, len, num_des, des_len, des; 16691 int ret; 16692 16693 if (!rdev->ops->set_qos_map) 16694 return -EOPNOTSUPP; 16695 16696 if (info->attrs[NL80211_ATTR_QOS_MAP]) { 16697 pos = nla_data(info->attrs[NL80211_ATTR_QOS_MAP]); 16698 len = nla_len(info->attrs[NL80211_ATTR_QOS_MAP]); 16699 16700 if (len % 2) 16701 return -EINVAL; 16702 16703 qos_map = kzalloc(sizeof(struct cfg80211_qos_map), GFP_KERNEL); 16704 if (!qos_map) 16705 return -ENOMEM; 16706 16707 num_des = (len - IEEE80211_QOS_MAP_LEN_MIN) >> 1; 16708 if (num_des) { 16709 des_len = num_des * 16710 sizeof(struct cfg80211_dscp_exception); 16711 memcpy(qos_map->dscp_exception, pos, des_len); 16712 qos_map->num_des = num_des; 16713 for (des = 0; des < num_des; des++) { 16714 if (qos_map->dscp_exception[des].up > 7) { 16715 kfree(qos_map); 16716 return -EINVAL; 16717 } 16718 } 16719 pos += des_len; 16720 } 16721 memcpy(qos_map->up, pos, IEEE80211_QOS_MAP_LEN_MIN); 16722 } 16723 16724 ret = nl80211_key_allowed(dev->ieee80211_ptr); 16725 if (!ret) 16726 ret = rdev_set_qos_map(rdev, dev, qos_map); 16727 16728 kfree(qos_map); 16729 return ret; 16730 } 16731 16732 static int nl80211_add_tx_ts(struct sk_buff *skb, struct genl_info *info) 16733 { 16734 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 16735 struct net_device *dev = info->user_ptr[1]; 16736 struct wireless_dev *wdev = dev->ieee80211_ptr; 16737 const u8 *peer; 16738 u8 tsid, up; 16739 u16 admitted_time = 0; 16740 16741 if (!(rdev->wiphy.features & NL80211_FEATURE_SUPPORTS_WMM_ADMISSION)) 16742 return -EOPNOTSUPP; 16743 16744 if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC] || 16745 !info->attrs[NL80211_ATTR_USER_PRIO]) 16746 return -EINVAL; 16747 16748 tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]); 16749 up = nla_get_u8(info->attrs[NL80211_ATTR_USER_PRIO]); 16750 16751 /* WMM uses TIDs 0-7 even for TSPEC */ 16752 if (tsid >= IEEE80211_FIRST_TSPEC_TSID) { 16753 /* TODO: handle 802.11 TSPEC/admission control 16754 * need more attributes for that (e.g. BA session requirement); 16755 * change the WMM admission test above to allow both then 16756 */ 16757 return -EINVAL; 16758 } 16759 16760 peer = nla_data(info->attrs[NL80211_ATTR_MAC]); 16761 16762 if (info->attrs[NL80211_ATTR_ADMITTED_TIME]) { 16763 admitted_time = 16764 nla_get_u16(info->attrs[NL80211_ATTR_ADMITTED_TIME]); 16765 if (!admitted_time) 16766 return -EINVAL; 16767 } 16768 16769 switch (wdev->iftype) { 16770 case NL80211_IFTYPE_STATION: 16771 case NL80211_IFTYPE_P2P_CLIENT: 16772 if (wdev->connected) 16773 break; 16774 return -ENOTCONN; 16775 default: 16776 return -EOPNOTSUPP; 16777 } 16778 16779 return rdev_add_tx_ts(rdev, dev, tsid, peer, up, admitted_time); 16780 } 16781 16782 static int nl80211_del_tx_ts(struct sk_buff *skb, struct genl_info *info) 16783 { 16784 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 16785 struct net_device *dev = info->user_ptr[1]; 16786 const u8 *peer; 16787 u8 tsid; 16788 16789 if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC]) 16790 return -EINVAL; 16791 16792 tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]); 16793 peer = nla_data(info->attrs[NL80211_ATTR_MAC]); 16794 16795 return rdev_del_tx_ts(rdev, dev, tsid, peer); 16796 } 16797 16798 static int nl80211_tdls_channel_switch(struct sk_buff *skb, 16799 struct genl_info *info) 16800 { 16801 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 16802 struct net_device *dev = info->user_ptr[1]; 16803 struct wireless_dev *wdev = dev->ieee80211_ptr; 16804 struct cfg80211_chan_def chandef = {}; 16805 const u8 *addr; 16806 u8 oper_class; 16807 int err; 16808 16809 if (!rdev->ops->tdls_channel_switch || 16810 !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH)) 16811 return -EOPNOTSUPP; 16812 16813 switch (dev->ieee80211_ptr->iftype) { 16814 case NL80211_IFTYPE_STATION: 16815 case NL80211_IFTYPE_P2P_CLIENT: 16816 break; 16817 default: 16818 return -EOPNOTSUPP; 16819 } 16820 16821 if (!info->attrs[NL80211_ATTR_MAC] || 16822 !info->attrs[NL80211_ATTR_OPER_CLASS]) 16823 return -EINVAL; 16824 16825 err = nl80211_parse_chandef(rdev, info, &chandef); 16826 if (err) 16827 return err; 16828 16829 /* 16830 * Don't allow wide channels on the 2.4Ghz band, as per IEEE802.11-2012 16831 * section 10.22.6.2.1. Disallow 5/10Mhz channels as well for now, the 16832 * specification is not defined for them. 16833 */ 16834 if (chandef.chan->band == NL80211_BAND_2GHZ && 16835 chandef.width != NL80211_CHAN_WIDTH_20_NOHT && 16836 chandef.width != NL80211_CHAN_WIDTH_20) 16837 return -EINVAL; 16838 16839 /* we will be active on the TDLS link */ 16840 if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &chandef, 16841 wdev->iftype)) 16842 return -EINVAL; 16843 16844 /* don't allow switching to DFS channels */ 16845 if (cfg80211_chandef_dfs_required(wdev->wiphy, &chandef, wdev->iftype)) 16846 return -EINVAL; 16847 16848 addr = nla_data(info->attrs[NL80211_ATTR_MAC]); 16849 oper_class = nla_get_u8(info->attrs[NL80211_ATTR_OPER_CLASS]); 16850 16851 return rdev_tdls_channel_switch(rdev, dev, addr, oper_class, &chandef); 16852 } 16853 16854 static int nl80211_tdls_cancel_channel_switch(struct sk_buff *skb, 16855 struct genl_info *info) 16856 { 16857 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 16858 struct net_device *dev = info->user_ptr[1]; 16859 const u8 *addr; 16860 16861 if (!rdev->ops->tdls_channel_switch || 16862 !rdev->ops->tdls_cancel_channel_switch || 16863 !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH)) 16864 return -EOPNOTSUPP; 16865 16866 switch (dev->ieee80211_ptr->iftype) { 16867 case NL80211_IFTYPE_STATION: 16868 case NL80211_IFTYPE_P2P_CLIENT: 16869 break; 16870 default: 16871 return -EOPNOTSUPP; 16872 } 16873 16874 if (!info->attrs[NL80211_ATTR_MAC]) 16875 return -EINVAL; 16876 16877 addr = nla_data(info->attrs[NL80211_ATTR_MAC]); 16878 16879 rdev_tdls_cancel_channel_switch(rdev, dev, addr); 16880 16881 return 0; 16882 } 16883 16884 static int nl80211_set_multicast_to_unicast(struct sk_buff *skb, 16885 struct genl_info *info) 16886 { 16887 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 16888 struct net_device *dev = info->user_ptr[1]; 16889 struct wireless_dev *wdev = dev->ieee80211_ptr; 16890 const struct nlattr *nla; 16891 bool enabled; 16892 16893 if (!rdev->ops->set_multicast_to_unicast) 16894 return -EOPNOTSUPP; 16895 16896 if (wdev->iftype != NL80211_IFTYPE_AP && 16897 wdev->iftype != NL80211_IFTYPE_P2P_GO) 16898 return -EOPNOTSUPP; 16899 16900 nla = info->attrs[NL80211_ATTR_MULTICAST_TO_UNICAST_ENABLED]; 16901 enabled = nla_get_flag(nla); 16902 16903 return rdev_set_multicast_to_unicast(rdev, dev, enabled); 16904 } 16905 16906 static int nl80211_set_pmk(struct sk_buff *skb, struct genl_info *info) 16907 { 16908 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 16909 struct net_device *dev = info->user_ptr[1]; 16910 struct wireless_dev *wdev = dev->ieee80211_ptr; 16911 struct cfg80211_pmk_conf pmk_conf = {}; 16912 16913 if (wdev->iftype != NL80211_IFTYPE_STATION && 16914 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT) 16915 return -EOPNOTSUPP; 16916 16917 if (!wiphy_ext_feature_isset(&rdev->wiphy, 16918 NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_1X)) 16919 return -EOPNOTSUPP; 16920 16921 if (!info->attrs[NL80211_ATTR_MAC] || !info->attrs[NL80211_ATTR_PMK]) 16922 return -EINVAL; 16923 16924 if (!wdev->connected) 16925 return -ENOTCONN; 16926 16927 pmk_conf.aa = nla_data(info->attrs[NL80211_ATTR_MAC]); 16928 if (memcmp(pmk_conf.aa, wdev->u.client.connected_addr, ETH_ALEN)) 16929 return -EINVAL; 16930 16931 pmk_conf.pmk = nla_data(info->attrs[NL80211_ATTR_PMK]); 16932 pmk_conf.pmk_len = nla_len(info->attrs[NL80211_ATTR_PMK]); 16933 if (pmk_conf.pmk_len != WLAN_PMK_LEN && 16934 pmk_conf.pmk_len != WLAN_PMK_LEN_SUITE_B_192) 16935 return -EINVAL; 16936 16937 if (info->attrs[NL80211_ATTR_PMKR0_NAME]) 16938 pmk_conf.pmk_r0_name = 16939 nla_data(info->attrs[NL80211_ATTR_PMKR0_NAME]); 16940 16941 return rdev_set_pmk(rdev, dev, &pmk_conf); 16942 } 16943 16944 static int nl80211_del_pmk(struct sk_buff *skb, struct genl_info *info) 16945 { 16946 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 16947 struct net_device *dev = info->user_ptr[1]; 16948 struct wireless_dev *wdev = dev->ieee80211_ptr; 16949 const u8 *aa; 16950 16951 if (wdev->iftype != NL80211_IFTYPE_STATION && 16952 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT) 16953 return -EOPNOTSUPP; 16954 16955 if (!wiphy_ext_feature_isset(&rdev->wiphy, 16956 NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_1X)) 16957 return -EOPNOTSUPP; 16958 16959 if (!info->attrs[NL80211_ATTR_MAC]) 16960 return -EINVAL; 16961 16962 aa = nla_data(info->attrs[NL80211_ATTR_MAC]); 16963 return rdev_del_pmk(rdev, dev, aa); 16964 } 16965 16966 static int nl80211_external_auth(struct sk_buff *skb, struct genl_info *info) 16967 { 16968 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 16969 struct net_device *dev = info->user_ptr[1]; 16970 struct cfg80211_external_auth_params params; 16971 16972 if (!rdev->ops->external_auth) 16973 return -EOPNOTSUPP; 16974 16975 if (!info->attrs[NL80211_ATTR_SSID] && 16976 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP && 16977 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) 16978 return -EINVAL; 16979 16980 if (!info->attrs[NL80211_ATTR_BSSID]) 16981 return -EINVAL; 16982 16983 if (!info->attrs[NL80211_ATTR_STATUS_CODE]) 16984 return -EINVAL; 16985 16986 memset(¶ms, 0, sizeof(params)); 16987 16988 if (info->attrs[NL80211_ATTR_SSID]) { 16989 params.ssid.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]); 16990 if (params.ssid.ssid_len == 0) 16991 return -EINVAL; 16992 memcpy(params.ssid.ssid, 16993 nla_data(info->attrs[NL80211_ATTR_SSID]), 16994 params.ssid.ssid_len); 16995 } 16996 16997 memcpy(params.bssid, nla_data(info->attrs[NL80211_ATTR_BSSID]), 16998 ETH_ALEN); 16999 17000 params.status = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]); 17001 17002 if (info->attrs[NL80211_ATTR_PMKID]) 17003 params.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]); 17004 17005 return rdev_external_auth(rdev, dev, ¶ms); 17006 } 17007 17008 static int nl80211_tx_control_port(struct sk_buff *skb, struct genl_info *info) 17009 { 17010 bool dont_wait_for_ack = info->attrs[NL80211_ATTR_DONT_WAIT_FOR_ACK]; 17011 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 17012 struct net_device *dev = info->user_ptr[1]; 17013 struct wireless_dev *wdev = dev->ieee80211_ptr; 17014 const u8 *buf; 17015 size_t len; 17016 u8 *dest; 17017 u16 proto; 17018 bool noencrypt; 17019 u64 cookie = 0; 17020 int link_id; 17021 int err; 17022 17023 if (!wiphy_ext_feature_isset(&rdev->wiphy, 17024 NL80211_EXT_FEATURE_CONTROL_PORT_OVER_NL80211)) 17025 return -EOPNOTSUPP; 17026 17027 if (!rdev->ops->tx_control_port) 17028 return -EOPNOTSUPP; 17029 17030 if (!info->attrs[NL80211_ATTR_FRAME] || 17031 !info->attrs[NL80211_ATTR_MAC] || 17032 !info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) { 17033 GENL_SET_ERR_MSG(info, "Frame, MAC or ethertype missing"); 17034 return -EINVAL; 17035 } 17036 17037 switch (wdev->iftype) { 17038 case NL80211_IFTYPE_AP: 17039 case NL80211_IFTYPE_P2P_GO: 17040 case NL80211_IFTYPE_MESH_POINT: 17041 break; 17042 case NL80211_IFTYPE_ADHOC: 17043 if (wdev->u.ibss.current_bss) 17044 break; 17045 return -ENOTCONN; 17046 case NL80211_IFTYPE_STATION: 17047 case NL80211_IFTYPE_P2P_CLIENT: 17048 if (wdev->connected) 17049 break; 17050 return -ENOTCONN; 17051 default: 17052 return -EOPNOTSUPP; 17053 } 17054 17055 buf = nla_data(info->attrs[NL80211_ATTR_FRAME]); 17056 len = nla_len(info->attrs[NL80211_ATTR_FRAME]); 17057 dest = nla_data(info->attrs[NL80211_ATTR_MAC]); 17058 proto = nla_get_u16(info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]); 17059 noencrypt = 17060 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT]); 17061 17062 link_id = nl80211_link_id_or_invalid(info->attrs); 17063 17064 err = rdev_tx_control_port(rdev, dev, buf, len, 17065 dest, cpu_to_be16(proto), noencrypt, link_id, 17066 dont_wait_for_ack ? NULL : &cookie); 17067 if (!err && !dont_wait_for_ack) 17068 nl_set_extack_cookie_u64(info->extack, cookie); 17069 return err; 17070 } 17071 17072 static int nl80211_get_ftm_responder_stats(struct sk_buff *skb, 17073 struct genl_info *info) 17074 { 17075 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 17076 struct net_device *dev = info->user_ptr[1]; 17077 struct wireless_dev *wdev = dev->ieee80211_ptr; 17078 struct cfg80211_ftm_responder_stats ftm_stats = {}; 17079 unsigned int link_id = nl80211_link_id(info->attrs); 17080 struct sk_buff *msg; 17081 void *hdr; 17082 struct nlattr *ftm_stats_attr; 17083 int err; 17084 17085 if (wdev->iftype != NL80211_IFTYPE_AP || 17086 !wdev->links[link_id].ap.beacon_interval) 17087 return -EOPNOTSUPP; 17088 17089 err = rdev_get_ftm_responder_stats(rdev, dev, &ftm_stats); 17090 if (err) 17091 return err; 17092 17093 if (!ftm_stats.filled) 17094 return -ENODATA; 17095 17096 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 17097 if (!msg) 17098 return -ENOMEM; 17099 17100 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0, 17101 NL80211_CMD_GET_FTM_RESPONDER_STATS); 17102 if (!hdr) 17103 goto nla_put_failure; 17104 17105 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex)) 17106 goto nla_put_failure; 17107 17108 ftm_stats_attr = nla_nest_start_noflag(msg, 17109 NL80211_ATTR_FTM_RESPONDER_STATS); 17110 if (!ftm_stats_attr) 17111 goto nla_put_failure; 17112 17113 #define SET_FTM(field, name, type) \ 17114 do { if ((ftm_stats.filled & BIT(NL80211_FTM_STATS_ ## name)) && \ 17115 nla_put_ ## type(msg, NL80211_FTM_STATS_ ## name, \ 17116 ftm_stats.field)) \ 17117 goto nla_put_failure; } while (0) 17118 #define SET_FTM_U64(field, name) \ 17119 do { if ((ftm_stats.filled & BIT(NL80211_FTM_STATS_ ## name)) && \ 17120 nla_put_u64_64bit(msg, NL80211_FTM_STATS_ ## name, \ 17121 ftm_stats.field, NL80211_FTM_STATS_PAD)) \ 17122 goto nla_put_failure; } while (0) 17123 17124 SET_FTM(success_num, SUCCESS_NUM, u32); 17125 SET_FTM(partial_num, PARTIAL_NUM, u32); 17126 SET_FTM(failed_num, FAILED_NUM, u32); 17127 SET_FTM(asap_num, ASAP_NUM, u32); 17128 SET_FTM(non_asap_num, NON_ASAP_NUM, u32); 17129 SET_FTM_U64(total_duration_ms, TOTAL_DURATION_MSEC); 17130 SET_FTM(unknown_triggers_num, UNKNOWN_TRIGGERS_NUM, u32); 17131 SET_FTM(reschedule_requests_num, RESCHEDULE_REQUESTS_NUM, u32); 17132 SET_FTM(out_of_window_triggers_num, OUT_OF_WINDOW_TRIGGERS_NUM, u32); 17133 #undef SET_FTM 17134 17135 nla_nest_end(msg, ftm_stats_attr); 17136 17137 genlmsg_end(msg, hdr); 17138 return genlmsg_reply(msg, info); 17139 17140 nla_put_failure: 17141 nlmsg_free(msg); 17142 return -ENOBUFS; 17143 } 17144 17145 static int nl80211_update_owe_info(struct sk_buff *skb, struct genl_info *info) 17146 { 17147 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 17148 struct cfg80211_update_owe_info owe_info; 17149 struct net_device *dev = info->user_ptr[1]; 17150 17151 if (!rdev->ops->update_owe_info) 17152 return -EOPNOTSUPP; 17153 17154 if (!info->attrs[NL80211_ATTR_STATUS_CODE] || 17155 !info->attrs[NL80211_ATTR_MAC]) 17156 return -EINVAL; 17157 17158 memset(&owe_info, 0, sizeof(owe_info)); 17159 owe_info.status = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]); 17160 nla_memcpy(owe_info.peer, info->attrs[NL80211_ATTR_MAC], ETH_ALEN); 17161 17162 if (info->attrs[NL80211_ATTR_IE]) { 17163 owe_info.ie = nla_data(info->attrs[NL80211_ATTR_IE]); 17164 owe_info.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); 17165 } 17166 17167 return rdev_update_owe_info(rdev, dev, &owe_info); 17168 } 17169 17170 static int nl80211_probe_mesh_link(struct sk_buff *skb, struct genl_info *info) 17171 { 17172 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 17173 struct net_device *dev = info->user_ptr[1]; 17174 struct wireless_dev *wdev = dev->ieee80211_ptr; 17175 struct station_info sinfo = {}; 17176 const u8 *buf; 17177 size_t len; 17178 u8 *dest; 17179 int err; 17180 17181 if (!rdev->ops->probe_mesh_link || !rdev->ops->get_station) 17182 return -EOPNOTSUPP; 17183 17184 if (!info->attrs[NL80211_ATTR_MAC] || 17185 !info->attrs[NL80211_ATTR_FRAME]) { 17186 GENL_SET_ERR_MSG(info, "Frame or MAC missing"); 17187 return -EINVAL; 17188 } 17189 17190 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) 17191 return -EOPNOTSUPP; 17192 17193 dest = nla_data(info->attrs[NL80211_ATTR_MAC]); 17194 buf = nla_data(info->attrs[NL80211_ATTR_FRAME]); 17195 len = nla_len(info->attrs[NL80211_ATTR_FRAME]); 17196 17197 if (len < sizeof(struct ethhdr)) 17198 return -EINVAL; 17199 17200 if (!ether_addr_equal(buf, dest) || is_multicast_ether_addr(buf) || 17201 !ether_addr_equal(buf + ETH_ALEN, dev->dev_addr)) 17202 return -EINVAL; 17203 17204 err = rdev_get_station(rdev, dev, dest, &sinfo); 17205 if (err) 17206 return err; 17207 17208 cfg80211_sinfo_release_content(&sinfo); 17209 17210 return rdev_probe_mesh_link(rdev, dev, dest, buf, len); 17211 } 17212 17213 static int parse_tid_conf(struct cfg80211_registered_device *rdev, 17214 struct nlattr *attrs[], struct net_device *dev, 17215 struct cfg80211_tid_cfg *tid_conf, 17216 struct genl_info *info, const u8 *peer, 17217 unsigned int link_id) 17218 { 17219 struct netlink_ext_ack *extack = info->extack; 17220 u64 mask; 17221 int err; 17222 17223 if (!attrs[NL80211_TID_CONFIG_ATTR_TIDS]) 17224 return -EINVAL; 17225 17226 tid_conf->config_override = 17227 nla_get_flag(attrs[NL80211_TID_CONFIG_ATTR_OVERRIDE]); 17228 tid_conf->tids = nla_get_u16(attrs[NL80211_TID_CONFIG_ATTR_TIDS]); 17229 17230 if (tid_conf->config_override) { 17231 if (rdev->ops->reset_tid_config) { 17232 err = rdev_reset_tid_config(rdev, dev, peer, 17233 tid_conf->tids); 17234 if (err) 17235 return err; 17236 } else { 17237 return -EINVAL; 17238 } 17239 } 17240 17241 if (attrs[NL80211_TID_CONFIG_ATTR_NOACK]) { 17242 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_NOACK); 17243 tid_conf->noack = 17244 nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_NOACK]); 17245 } 17246 17247 if (attrs[NL80211_TID_CONFIG_ATTR_RETRY_SHORT]) { 17248 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_RETRY_SHORT); 17249 tid_conf->retry_short = 17250 nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_RETRY_SHORT]); 17251 17252 if (tid_conf->retry_short > rdev->wiphy.max_data_retry_count) 17253 return -EINVAL; 17254 } 17255 17256 if (attrs[NL80211_TID_CONFIG_ATTR_RETRY_LONG]) { 17257 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_RETRY_LONG); 17258 tid_conf->retry_long = 17259 nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_RETRY_LONG]); 17260 17261 if (tid_conf->retry_long > rdev->wiphy.max_data_retry_count) 17262 return -EINVAL; 17263 } 17264 17265 if (attrs[NL80211_TID_CONFIG_ATTR_AMPDU_CTRL]) { 17266 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_AMPDU_CTRL); 17267 tid_conf->ampdu = 17268 nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_AMPDU_CTRL]); 17269 } 17270 17271 if (attrs[NL80211_TID_CONFIG_ATTR_RTSCTS_CTRL]) { 17272 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_RTSCTS_CTRL); 17273 tid_conf->rtscts = 17274 nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_RTSCTS_CTRL]); 17275 } 17276 17277 if (attrs[NL80211_TID_CONFIG_ATTR_AMSDU_CTRL]) { 17278 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_AMSDU_CTRL); 17279 tid_conf->amsdu = 17280 nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_AMSDU_CTRL]); 17281 } 17282 17283 if (attrs[NL80211_TID_CONFIG_ATTR_TX_RATE_TYPE]) { 17284 u32 idx = NL80211_TID_CONFIG_ATTR_TX_RATE_TYPE, attr; 17285 17286 tid_conf->txrate_type = nla_get_u8(attrs[idx]); 17287 17288 if (tid_conf->txrate_type != NL80211_TX_RATE_AUTOMATIC) { 17289 attr = NL80211_TID_CONFIG_ATTR_TX_RATE; 17290 err = nl80211_parse_tx_bitrate_mask(info, attrs, attr, 17291 &tid_conf->txrate_mask, dev, 17292 true, link_id); 17293 if (err) 17294 return err; 17295 17296 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_TX_RATE); 17297 } 17298 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_TX_RATE_TYPE); 17299 } 17300 17301 if (peer) 17302 mask = rdev->wiphy.tid_config_support.peer; 17303 else 17304 mask = rdev->wiphy.tid_config_support.vif; 17305 17306 if (tid_conf->mask & ~mask) { 17307 NL_SET_ERR_MSG(extack, "unsupported TID configuration"); 17308 return -EOPNOTSUPP; 17309 } 17310 17311 return 0; 17312 } 17313 17314 static int nl80211_set_tid_config(struct sk_buff *skb, 17315 struct genl_info *info) 17316 { 17317 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 17318 struct nlattr *attrs[NL80211_TID_CONFIG_ATTR_MAX + 1]; 17319 unsigned int link_id = nl80211_link_id(info->attrs); 17320 struct net_device *dev = info->user_ptr[1]; 17321 struct cfg80211_tid_config *tid_config; 17322 struct nlattr *tid; 17323 int conf_idx = 0, rem_conf; 17324 int ret = -EINVAL; 17325 u32 num_conf = 0; 17326 17327 if (!info->attrs[NL80211_ATTR_TID_CONFIG]) 17328 return -EINVAL; 17329 17330 if (!rdev->ops->set_tid_config) 17331 return -EOPNOTSUPP; 17332 17333 nla_for_each_nested(tid, info->attrs[NL80211_ATTR_TID_CONFIG], 17334 rem_conf) 17335 num_conf++; 17336 17337 tid_config = kzalloc(struct_size(tid_config, tid_conf, num_conf), 17338 GFP_KERNEL); 17339 if (!tid_config) 17340 return -ENOMEM; 17341 17342 tid_config->n_tid_conf = num_conf; 17343 17344 if (info->attrs[NL80211_ATTR_MAC]) 17345 tid_config->peer = nla_data(info->attrs[NL80211_ATTR_MAC]); 17346 17347 nla_for_each_nested(tid, info->attrs[NL80211_ATTR_TID_CONFIG], 17348 rem_conf) { 17349 ret = nla_parse_nested(attrs, NL80211_TID_CONFIG_ATTR_MAX, 17350 tid, NULL, NULL); 17351 17352 if (ret) 17353 goto bad_tid_conf; 17354 17355 ret = parse_tid_conf(rdev, attrs, dev, 17356 &tid_config->tid_conf[conf_idx], 17357 info, tid_config->peer, link_id); 17358 if (ret) 17359 goto bad_tid_conf; 17360 17361 conf_idx++; 17362 } 17363 17364 ret = rdev_set_tid_config(rdev, dev, tid_config); 17365 17366 bad_tid_conf: 17367 kfree(tid_config); 17368 return ret; 17369 } 17370 17371 static int nl80211_color_change(struct sk_buff *skb, struct genl_info *info) 17372 { 17373 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 17374 struct cfg80211_color_change_settings params = {}; 17375 struct net_device *dev = info->user_ptr[1]; 17376 struct wireless_dev *wdev = dev->ieee80211_ptr; 17377 struct nlattr **tb; 17378 u16 offset; 17379 int err; 17380 17381 if (!rdev->ops->color_change) 17382 return -EOPNOTSUPP; 17383 17384 if (!wiphy_ext_feature_isset(&rdev->wiphy, 17385 NL80211_EXT_FEATURE_BSS_COLOR)) 17386 return -EOPNOTSUPP; 17387 17388 if (wdev->iftype != NL80211_IFTYPE_AP) 17389 return -EOPNOTSUPP; 17390 17391 if (!info->attrs[NL80211_ATTR_COLOR_CHANGE_COUNT] || 17392 !info->attrs[NL80211_ATTR_COLOR_CHANGE_COLOR] || 17393 !info->attrs[NL80211_ATTR_COLOR_CHANGE_ELEMS]) 17394 return -EINVAL; 17395 17396 params.count = nla_get_u8(info->attrs[NL80211_ATTR_COLOR_CHANGE_COUNT]); 17397 params.color = nla_get_u8(info->attrs[NL80211_ATTR_COLOR_CHANGE_COLOR]); 17398 17399 err = nl80211_parse_beacon(rdev, info->attrs, ¶ms.beacon_next, 17400 info->extack); 17401 if (err) 17402 return err; 17403 17404 tb = kcalloc(NL80211_ATTR_MAX + 1, sizeof(*tb), GFP_KERNEL); 17405 if (!tb) 17406 return -ENOMEM; 17407 17408 err = nla_parse_nested(tb, NL80211_ATTR_MAX, 17409 info->attrs[NL80211_ATTR_COLOR_CHANGE_ELEMS], 17410 nl80211_policy, info->extack); 17411 if (err) 17412 goto out; 17413 17414 err = nl80211_parse_beacon(rdev, tb, ¶ms.beacon_color_change, 17415 info->extack); 17416 if (err) 17417 goto out; 17418 17419 if (!tb[NL80211_ATTR_CNTDWN_OFFS_BEACON]) { 17420 err = -EINVAL; 17421 goto out; 17422 } 17423 17424 if (nla_len(tb[NL80211_ATTR_CNTDWN_OFFS_BEACON]) != sizeof(u16)) { 17425 err = -EINVAL; 17426 goto out; 17427 } 17428 17429 offset = nla_get_u16(tb[NL80211_ATTR_CNTDWN_OFFS_BEACON]); 17430 if (offset >= params.beacon_color_change.tail_len) { 17431 err = -EINVAL; 17432 goto out; 17433 } 17434 17435 if (params.beacon_color_change.tail[offset] != params.count) { 17436 err = -EINVAL; 17437 goto out; 17438 } 17439 17440 params.counter_offset_beacon = offset; 17441 17442 if (tb[NL80211_ATTR_CNTDWN_OFFS_PRESP]) { 17443 if (nla_len(tb[NL80211_ATTR_CNTDWN_OFFS_PRESP]) != 17444 sizeof(u16)) { 17445 err = -EINVAL; 17446 goto out; 17447 } 17448 17449 offset = nla_get_u16(tb[NL80211_ATTR_CNTDWN_OFFS_PRESP]); 17450 if (offset >= params.beacon_color_change.probe_resp_len) { 17451 err = -EINVAL; 17452 goto out; 17453 } 17454 17455 if (params.beacon_color_change.probe_resp[offset] != 17456 params.count) { 17457 err = -EINVAL; 17458 goto out; 17459 } 17460 17461 params.counter_offset_presp = offset; 17462 } 17463 17464 if (info->attrs[NL80211_ATTR_UNSOL_BCAST_PROBE_RESP]) { 17465 err = nl80211_parse_unsol_bcast_probe_resp( 17466 rdev, info->attrs[NL80211_ATTR_UNSOL_BCAST_PROBE_RESP], 17467 ¶ms.unsol_bcast_probe_resp); 17468 if (err) 17469 goto out; 17470 } 17471 17472 params.link_id = nl80211_link_id(info->attrs); 17473 err = rdev_color_change(rdev, dev, ¶ms); 17474 17475 out: 17476 kfree(params.beacon_next.mbssid_ies); 17477 kfree(params.beacon_color_change.mbssid_ies); 17478 kfree(params.beacon_next.rnr_ies); 17479 kfree(params.beacon_color_change.rnr_ies); 17480 kfree(tb); 17481 return err; 17482 } 17483 17484 static int nl80211_set_fils_aad(struct sk_buff *skb, 17485 struct genl_info *info) 17486 { 17487 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 17488 struct net_device *dev = info->user_ptr[1]; 17489 struct cfg80211_fils_aad fils_aad = {}; 17490 u8 *nonces; 17491 17492 if (!info->attrs[NL80211_ATTR_MAC] || 17493 !info->attrs[NL80211_ATTR_FILS_KEK] || 17494 !info->attrs[NL80211_ATTR_FILS_NONCES]) 17495 return -EINVAL; 17496 17497 fils_aad.macaddr = nla_data(info->attrs[NL80211_ATTR_MAC]); 17498 fils_aad.kek_len = nla_len(info->attrs[NL80211_ATTR_FILS_KEK]); 17499 fils_aad.kek = nla_data(info->attrs[NL80211_ATTR_FILS_KEK]); 17500 nonces = nla_data(info->attrs[NL80211_ATTR_FILS_NONCES]); 17501 fils_aad.snonce = nonces; 17502 fils_aad.anonce = nonces + FILS_NONCE_LEN; 17503 17504 return rdev_set_fils_aad(rdev, dev, &fils_aad); 17505 } 17506 17507 static int nl80211_add_link(struct sk_buff *skb, struct genl_info *info) 17508 { 17509 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 17510 unsigned int link_id = nl80211_link_id(info->attrs); 17511 struct net_device *dev = info->user_ptr[1]; 17512 struct wireless_dev *wdev = dev->ieee80211_ptr; 17513 int ret; 17514 17515 if (!(wdev->wiphy->flags & WIPHY_FLAG_SUPPORTS_MLO)) 17516 return -EINVAL; 17517 17518 switch (wdev->iftype) { 17519 case NL80211_IFTYPE_AP: 17520 break; 17521 default: 17522 return -EINVAL; 17523 } 17524 17525 if (!info->attrs[NL80211_ATTR_MAC] || 17526 !is_valid_ether_addr(nla_data(info->attrs[NL80211_ATTR_MAC]))) 17527 return -EINVAL; 17528 17529 wdev->valid_links |= BIT(link_id); 17530 ether_addr_copy(wdev->links[link_id].addr, 17531 nla_data(info->attrs[NL80211_ATTR_MAC])); 17532 17533 ret = rdev_add_intf_link(rdev, wdev, link_id); 17534 if (ret) { 17535 wdev->valid_links &= ~BIT(link_id); 17536 eth_zero_addr(wdev->links[link_id].addr); 17537 } 17538 17539 return ret; 17540 } 17541 17542 static int nl80211_remove_link(struct sk_buff *skb, struct genl_info *info) 17543 { 17544 unsigned int link_id = nl80211_link_id(info->attrs); 17545 struct net_device *dev = info->user_ptr[1]; 17546 struct wireless_dev *wdev = dev->ieee80211_ptr; 17547 17548 /* cannot remove if there's no link */ 17549 if (!info->attrs[NL80211_ATTR_MLO_LINK_ID]) 17550 return -EINVAL; 17551 17552 switch (wdev->iftype) { 17553 case NL80211_IFTYPE_AP: 17554 break; 17555 default: 17556 return -EINVAL; 17557 } 17558 17559 cfg80211_remove_link(wdev, link_id); 17560 17561 return 0; 17562 } 17563 17564 static int 17565 nl80211_add_mod_link_station(struct sk_buff *skb, struct genl_info *info, 17566 bool add) 17567 { 17568 struct link_station_parameters params = {}; 17569 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 17570 struct net_device *dev = info->user_ptr[1]; 17571 int err; 17572 17573 if ((add && !rdev->ops->add_link_station) || 17574 (!add && !rdev->ops->mod_link_station)) 17575 return -EOPNOTSUPP; 17576 17577 if (add && !info->attrs[NL80211_ATTR_MAC]) 17578 return -EINVAL; 17579 17580 if (!info->attrs[NL80211_ATTR_MLD_ADDR]) 17581 return -EINVAL; 17582 17583 if (add && !info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) 17584 return -EINVAL; 17585 17586 params.mld_mac = nla_data(info->attrs[NL80211_ATTR_MLD_ADDR]); 17587 17588 if (info->attrs[NL80211_ATTR_MAC]) { 17589 params.link_mac = nla_data(info->attrs[NL80211_ATTR_MAC]); 17590 if (!is_valid_ether_addr(params.link_mac)) 17591 return -EINVAL; 17592 } 17593 17594 if (!info->attrs[NL80211_ATTR_MLO_LINK_ID]) 17595 return -EINVAL; 17596 17597 params.link_id = nla_get_u8(info->attrs[NL80211_ATTR_MLO_LINK_ID]); 17598 17599 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) { 17600 params.supported_rates = 17601 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]); 17602 params.supported_rates_len = 17603 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]); 17604 } 17605 17606 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) 17607 params.ht_capa = 17608 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]); 17609 17610 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) 17611 params.vht_capa = 17612 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]); 17613 17614 if (info->attrs[NL80211_ATTR_HE_CAPABILITY]) { 17615 params.he_capa = 17616 nla_data(info->attrs[NL80211_ATTR_HE_CAPABILITY]); 17617 params.he_capa_len = 17618 nla_len(info->attrs[NL80211_ATTR_HE_CAPABILITY]); 17619 17620 if (info->attrs[NL80211_ATTR_EHT_CAPABILITY]) { 17621 params.eht_capa = 17622 nla_data(info->attrs[NL80211_ATTR_EHT_CAPABILITY]); 17623 params.eht_capa_len = 17624 nla_len(info->attrs[NL80211_ATTR_EHT_CAPABILITY]); 17625 17626 if (!ieee80211_eht_capa_size_ok((const u8 *)params.he_capa, 17627 (const u8 *)params.eht_capa, 17628 params.eht_capa_len, 17629 false)) 17630 return -EINVAL; 17631 } 17632 } 17633 17634 if (info->attrs[NL80211_ATTR_HE_6GHZ_CAPABILITY]) 17635 params.he_6ghz_capa = 17636 nla_data(info->attrs[NL80211_ATTR_HE_6GHZ_CAPABILITY]); 17637 17638 if (info->attrs[NL80211_ATTR_OPMODE_NOTIF]) { 17639 params.opmode_notif_used = true; 17640 params.opmode_notif = 17641 nla_get_u8(info->attrs[NL80211_ATTR_OPMODE_NOTIF]); 17642 } 17643 17644 err = nl80211_parse_sta_txpower_setting(info, ¶ms.txpwr, 17645 ¶ms.txpwr_set); 17646 if (err) 17647 return err; 17648 17649 if (add) 17650 return rdev_add_link_station(rdev, dev, ¶ms); 17651 17652 return rdev_mod_link_station(rdev, dev, ¶ms); 17653 } 17654 17655 static int 17656 nl80211_add_link_station(struct sk_buff *skb, struct genl_info *info) 17657 { 17658 return nl80211_add_mod_link_station(skb, info, true); 17659 } 17660 17661 static int 17662 nl80211_modify_link_station(struct sk_buff *skb, struct genl_info *info) 17663 { 17664 return nl80211_add_mod_link_station(skb, info, false); 17665 } 17666 17667 static int 17668 nl80211_remove_link_station(struct sk_buff *skb, struct genl_info *info) 17669 { 17670 struct link_station_del_parameters params = {}; 17671 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 17672 struct net_device *dev = info->user_ptr[1]; 17673 17674 if (!rdev->ops->del_link_station) 17675 return -EOPNOTSUPP; 17676 17677 if (!info->attrs[NL80211_ATTR_MLD_ADDR] || 17678 !info->attrs[NL80211_ATTR_MLO_LINK_ID]) 17679 return -EINVAL; 17680 17681 params.mld_mac = nla_data(info->attrs[NL80211_ATTR_MLD_ADDR]); 17682 params.link_id = nla_get_u8(info->attrs[NL80211_ATTR_MLO_LINK_ID]); 17683 17684 return rdev_del_link_station(rdev, dev, ¶ms); 17685 } 17686 17687 static int nl80211_set_hw_timestamp(struct sk_buff *skb, 17688 struct genl_info *info) 17689 { 17690 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 17691 struct net_device *dev = info->user_ptr[1]; 17692 struct cfg80211_set_hw_timestamp hwts = {}; 17693 17694 if (!rdev->wiphy.hw_timestamp_max_peers) 17695 return -EOPNOTSUPP; 17696 17697 if (!info->attrs[NL80211_ATTR_MAC] && 17698 rdev->wiphy.hw_timestamp_max_peers != CFG80211_HW_TIMESTAMP_ALL_PEERS) 17699 return -EOPNOTSUPP; 17700 17701 if (info->attrs[NL80211_ATTR_MAC]) 17702 hwts.macaddr = nla_data(info->attrs[NL80211_ATTR_MAC]); 17703 17704 hwts.enable = 17705 nla_get_flag(info->attrs[NL80211_ATTR_HW_TIMESTAMP_ENABLED]); 17706 17707 return rdev_set_hw_timestamp(rdev, dev, &hwts); 17708 } 17709 17710 static int 17711 nl80211_set_ttlm(struct sk_buff *skb, struct genl_info *info) 17712 { 17713 struct cfg80211_ttlm_params params = {}; 17714 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 17715 struct net_device *dev = info->user_ptr[1]; 17716 struct wireless_dev *wdev = dev->ieee80211_ptr; 17717 17718 if (wdev->iftype != NL80211_IFTYPE_STATION && 17719 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT) 17720 return -EOPNOTSUPP; 17721 17722 if (!wdev->connected) 17723 return -ENOLINK; 17724 17725 if (!info->attrs[NL80211_ATTR_MLO_TTLM_DLINK] || 17726 !info->attrs[NL80211_ATTR_MLO_TTLM_ULINK]) 17727 return -EINVAL; 17728 17729 nla_memcpy(params.dlink, 17730 info->attrs[NL80211_ATTR_MLO_TTLM_DLINK], 17731 sizeof(params.dlink)); 17732 nla_memcpy(params.ulink, 17733 info->attrs[NL80211_ATTR_MLO_TTLM_ULINK], 17734 sizeof(params.ulink)); 17735 17736 return rdev_set_ttlm(rdev, dev, ¶ms); 17737 } 17738 17739 static int nl80211_assoc_ml_reconf(struct sk_buff *skb, struct genl_info *info) 17740 { 17741 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 17742 struct net_device *dev = info->user_ptr[1]; 17743 struct wireless_dev *wdev = dev->ieee80211_ptr; 17744 struct cfg80211_ml_reconf_req req = {}; 17745 unsigned int link_id; 17746 u16 add_links; 17747 int err; 17748 17749 if (!wdev->valid_links) 17750 return -EINVAL; 17751 17752 if (dev->ieee80211_ptr->conn_owner_nlportid && 17753 dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid) 17754 return -EPERM; 17755 17756 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION && 17757 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) 17758 return -EOPNOTSUPP; 17759 17760 add_links = 0; 17761 if (info->attrs[NL80211_ATTR_MLO_LINKS]) { 17762 err = nl80211_process_links(rdev, req.add_links, 17763 /* mark as MLO, but not assoc */ 17764 IEEE80211_MLD_MAX_NUM_LINKS, 17765 NULL, 0, info); 17766 if (err) 17767 return err; 17768 17769 for (link_id = 0; link_id < IEEE80211_MLD_MAX_NUM_LINKS; 17770 link_id++) { 17771 if (!req.add_links[link_id].bss) 17772 continue; 17773 add_links |= BIT(link_id); 17774 } 17775 } 17776 17777 if (info->attrs[NL80211_ATTR_MLO_RECONF_REM_LINKS]) 17778 req.rem_links = 17779 nla_get_u16(info->attrs[NL80211_ATTR_MLO_RECONF_REM_LINKS]); 17780 17781 /* Validate that existing links are not added, removed links are valid 17782 * and don't allow adding and removing the same links 17783 */ 17784 if ((add_links & req.rem_links) || !(add_links | req.rem_links) || 17785 (wdev->valid_links & add_links) || 17786 ((wdev->valid_links & req.rem_links) != req.rem_links)) { 17787 err = -EINVAL; 17788 goto out; 17789 } 17790 17791 if (info->attrs[NL80211_ATTR_ASSOC_MLD_EXT_CAPA_OPS]) 17792 req.ext_mld_capa_ops = 17793 nla_get_u16(info->attrs[NL80211_ATTR_ASSOC_MLD_EXT_CAPA_OPS]); 17794 17795 err = cfg80211_assoc_ml_reconf(rdev, dev, &req); 17796 17797 out: 17798 for (link_id = 0; link_id < ARRAY_SIZE(req.add_links); link_id++) 17799 cfg80211_put_bss(&rdev->wiphy, req.add_links[link_id].bss); 17800 17801 return err; 17802 } 17803 17804 static int 17805 nl80211_epcs_cfg(struct sk_buff *skb, struct genl_info *info) 17806 { 17807 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 17808 struct net_device *dev = info->user_ptr[1]; 17809 struct wireless_dev *wdev = dev->ieee80211_ptr; 17810 bool val; 17811 17812 if (wdev->iftype != NL80211_IFTYPE_STATION && 17813 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT) 17814 return -EOPNOTSUPP; 17815 17816 if (!wdev->connected) 17817 return -ENOLINK; 17818 17819 val = nla_get_flag(info->attrs[NL80211_ATTR_EPCS]); 17820 17821 return rdev_set_epcs(rdev, dev, val); 17822 } 17823 17824 #define NL80211_FLAG_NEED_WIPHY 0x01 17825 #define NL80211_FLAG_NEED_NETDEV 0x02 17826 #define NL80211_FLAG_NEED_RTNL 0x04 17827 #define NL80211_FLAG_CHECK_NETDEV_UP 0x08 17828 #define NL80211_FLAG_NEED_NETDEV_UP (NL80211_FLAG_NEED_NETDEV |\ 17829 NL80211_FLAG_CHECK_NETDEV_UP) 17830 #define NL80211_FLAG_NEED_WDEV 0x10 17831 /* If a netdev is associated, it must be UP, P2P must be started */ 17832 #define NL80211_FLAG_NEED_WDEV_UP (NL80211_FLAG_NEED_WDEV |\ 17833 NL80211_FLAG_CHECK_NETDEV_UP) 17834 #define NL80211_FLAG_CLEAR_SKB 0x20 17835 #define NL80211_FLAG_NO_WIPHY_MTX 0x40 17836 #define NL80211_FLAG_MLO_VALID_LINK_ID 0x80 17837 #define NL80211_FLAG_MLO_UNSUPPORTED 0x100 17838 17839 #define INTERNAL_FLAG_SELECTORS(__sel) \ 17840 SELECTOR(__sel, NONE, 0) /* must be first */ \ 17841 SELECTOR(__sel, WIPHY, \ 17842 NL80211_FLAG_NEED_WIPHY) \ 17843 SELECTOR(__sel, WDEV, \ 17844 NL80211_FLAG_NEED_WDEV) \ 17845 SELECTOR(__sel, NETDEV, \ 17846 NL80211_FLAG_NEED_NETDEV) \ 17847 SELECTOR(__sel, NETDEV_LINK, \ 17848 NL80211_FLAG_NEED_NETDEV | \ 17849 NL80211_FLAG_MLO_VALID_LINK_ID) \ 17850 SELECTOR(__sel, NETDEV_NO_MLO, \ 17851 NL80211_FLAG_NEED_NETDEV | \ 17852 NL80211_FLAG_MLO_UNSUPPORTED) \ 17853 SELECTOR(__sel, WIPHY_RTNL, \ 17854 NL80211_FLAG_NEED_WIPHY | \ 17855 NL80211_FLAG_NEED_RTNL) \ 17856 SELECTOR(__sel, WIPHY_RTNL_NOMTX, \ 17857 NL80211_FLAG_NEED_WIPHY | \ 17858 NL80211_FLAG_NEED_RTNL | \ 17859 NL80211_FLAG_NO_WIPHY_MTX) \ 17860 SELECTOR(__sel, WDEV_RTNL, \ 17861 NL80211_FLAG_NEED_WDEV | \ 17862 NL80211_FLAG_NEED_RTNL) \ 17863 SELECTOR(__sel, NETDEV_RTNL, \ 17864 NL80211_FLAG_NEED_NETDEV | \ 17865 NL80211_FLAG_NEED_RTNL) \ 17866 SELECTOR(__sel, NETDEV_UP, \ 17867 NL80211_FLAG_NEED_NETDEV_UP) \ 17868 SELECTOR(__sel, NETDEV_UP_LINK, \ 17869 NL80211_FLAG_NEED_NETDEV_UP | \ 17870 NL80211_FLAG_MLO_VALID_LINK_ID) \ 17871 SELECTOR(__sel, NETDEV_UP_NO_MLO, \ 17872 NL80211_FLAG_NEED_NETDEV_UP | \ 17873 NL80211_FLAG_MLO_UNSUPPORTED) \ 17874 SELECTOR(__sel, NETDEV_UP_NO_MLO_CLEAR, \ 17875 NL80211_FLAG_NEED_NETDEV_UP | \ 17876 NL80211_FLAG_CLEAR_SKB | \ 17877 NL80211_FLAG_MLO_UNSUPPORTED) \ 17878 SELECTOR(__sel, NETDEV_UP_NOTMX, \ 17879 NL80211_FLAG_NEED_NETDEV_UP | \ 17880 NL80211_FLAG_NO_WIPHY_MTX) \ 17881 SELECTOR(__sel, NETDEV_UP_NOTMX_MLO, \ 17882 NL80211_FLAG_NEED_NETDEV_UP | \ 17883 NL80211_FLAG_NO_WIPHY_MTX | \ 17884 NL80211_FLAG_MLO_VALID_LINK_ID) \ 17885 SELECTOR(__sel, NETDEV_UP_CLEAR, \ 17886 NL80211_FLAG_NEED_NETDEV_UP | \ 17887 NL80211_FLAG_CLEAR_SKB) \ 17888 SELECTOR(__sel, WDEV_UP, \ 17889 NL80211_FLAG_NEED_WDEV_UP) \ 17890 SELECTOR(__sel, WDEV_UP_LINK, \ 17891 NL80211_FLAG_NEED_WDEV_UP | \ 17892 NL80211_FLAG_MLO_VALID_LINK_ID) \ 17893 SELECTOR(__sel, WDEV_UP_RTNL, \ 17894 NL80211_FLAG_NEED_WDEV_UP | \ 17895 NL80211_FLAG_NEED_RTNL) \ 17896 SELECTOR(__sel, WIPHY_CLEAR, \ 17897 NL80211_FLAG_NEED_WIPHY | \ 17898 NL80211_FLAG_CLEAR_SKB) 17899 17900 enum nl80211_internal_flags_selector { 17901 #define SELECTOR(_, name, value) NL80211_IFL_SEL_##name, 17902 INTERNAL_FLAG_SELECTORS(_) 17903 #undef SELECTOR 17904 }; 17905 17906 static u32 nl80211_internal_flags[] = { 17907 #define SELECTOR(_, name, value) [NL80211_IFL_SEL_##name] = value, 17908 INTERNAL_FLAG_SELECTORS(_) 17909 #undef SELECTOR 17910 }; 17911 17912 static int nl80211_pre_doit(const struct genl_split_ops *ops, 17913 struct sk_buff *skb, 17914 struct genl_info *info) 17915 { 17916 struct cfg80211_registered_device *rdev = NULL; 17917 struct wireless_dev *wdev = NULL; 17918 struct net_device *dev = NULL; 17919 u32 internal_flags; 17920 int err; 17921 17922 if (WARN_ON(ops->internal_flags >= ARRAY_SIZE(nl80211_internal_flags))) 17923 return -EINVAL; 17924 17925 internal_flags = nl80211_internal_flags[ops->internal_flags]; 17926 17927 rtnl_lock(); 17928 if (internal_flags & NL80211_FLAG_NEED_WIPHY) { 17929 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info); 17930 if (IS_ERR(rdev)) { 17931 err = PTR_ERR(rdev); 17932 goto out_unlock; 17933 } 17934 info->user_ptr[0] = rdev; 17935 } else if (internal_flags & NL80211_FLAG_NEED_NETDEV || 17936 internal_flags & NL80211_FLAG_NEED_WDEV) { 17937 wdev = __cfg80211_wdev_from_attrs(NULL, genl_info_net(info), 17938 info->attrs); 17939 if (IS_ERR(wdev)) { 17940 err = PTR_ERR(wdev); 17941 goto out_unlock; 17942 } 17943 17944 dev = wdev->netdev; 17945 dev_hold(dev); 17946 rdev = wiphy_to_rdev(wdev->wiphy); 17947 17948 if (internal_flags & NL80211_FLAG_NEED_NETDEV) { 17949 if (!dev) { 17950 err = -EINVAL; 17951 goto out_unlock; 17952 } 17953 17954 info->user_ptr[1] = dev; 17955 } else { 17956 info->user_ptr[1] = wdev; 17957 } 17958 17959 if (internal_flags & NL80211_FLAG_CHECK_NETDEV_UP && 17960 !wdev_running(wdev)) { 17961 err = -ENETDOWN; 17962 goto out_unlock; 17963 } 17964 17965 info->user_ptr[0] = rdev; 17966 } 17967 17968 if (internal_flags & NL80211_FLAG_MLO_VALID_LINK_ID) { 17969 struct nlattr *link_id = info->attrs[NL80211_ATTR_MLO_LINK_ID]; 17970 17971 if (!wdev) { 17972 err = -EINVAL; 17973 goto out_unlock; 17974 } 17975 17976 /* MLO -> require valid link ID */ 17977 if (wdev->valid_links && 17978 (!link_id || 17979 !(wdev->valid_links & BIT(nla_get_u8(link_id))))) { 17980 err = -EINVAL; 17981 goto out_unlock; 17982 } 17983 17984 /* non-MLO -> no link ID attribute accepted */ 17985 if (!wdev->valid_links && link_id) { 17986 err = -EINVAL; 17987 goto out_unlock; 17988 } 17989 } 17990 17991 if (internal_flags & NL80211_FLAG_MLO_UNSUPPORTED) { 17992 if (info->attrs[NL80211_ATTR_MLO_LINK_ID] || 17993 (wdev && wdev->valid_links)) { 17994 err = -EINVAL; 17995 goto out_unlock; 17996 } 17997 } 17998 17999 if (rdev && !(internal_flags & NL80211_FLAG_NO_WIPHY_MTX)) { 18000 wiphy_lock(&rdev->wiphy); 18001 /* we keep the mutex locked until post_doit */ 18002 __release(&rdev->wiphy.mtx); 18003 } 18004 if (!(internal_flags & NL80211_FLAG_NEED_RTNL)) 18005 rtnl_unlock(); 18006 18007 return 0; 18008 out_unlock: 18009 rtnl_unlock(); 18010 dev_put(dev); 18011 return err; 18012 } 18013 18014 static void nl80211_post_doit(const struct genl_split_ops *ops, 18015 struct sk_buff *skb, 18016 struct genl_info *info) 18017 { 18018 u32 internal_flags = nl80211_internal_flags[ops->internal_flags]; 18019 18020 if (info->user_ptr[1]) { 18021 if (internal_flags & NL80211_FLAG_NEED_WDEV) { 18022 struct wireless_dev *wdev = info->user_ptr[1]; 18023 18024 dev_put(wdev->netdev); 18025 } else { 18026 dev_put(info->user_ptr[1]); 18027 } 18028 } 18029 18030 if (info->user_ptr[0] && 18031 !(internal_flags & NL80211_FLAG_NO_WIPHY_MTX)) { 18032 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 18033 18034 /* we kept the mutex locked since pre_doit */ 18035 __acquire(&rdev->wiphy.mtx); 18036 wiphy_unlock(&rdev->wiphy); 18037 } 18038 18039 if (internal_flags & NL80211_FLAG_NEED_RTNL) 18040 rtnl_unlock(); 18041 18042 /* If needed, clear the netlink message payload from the SKB 18043 * as it might contain key data that shouldn't stick around on 18044 * the heap after the SKB is freed. The netlink message header 18045 * is still needed for further processing, so leave it intact. 18046 */ 18047 if (internal_flags & NL80211_FLAG_CLEAR_SKB) { 18048 struct nlmsghdr *nlh = nlmsg_hdr(skb); 18049 18050 memset(nlmsg_data(nlh), 0, nlmsg_len(nlh)); 18051 } 18052 } 18053 18054 static int nl80211_set_sar_sub_specs(struct cfg80211_registered_device *rdev, 18055 struct cfg80211_sar_specs *sar_specs, 18056 struct nlattr *spec[], int index) 18057 { 18058 u32 range_index, i; 18059 18060 if (!sar_specs || !spec) 18061 return -EINVAL; 18062 18063 if (!spec[NL80211_SAR_ATTR_SPECS_POWER] || 18064 !spec[NL80211_SAR_ATTR_SPECS_RANGE_INDEX]) 18065 return -EINVAL; 18066 18067 range_index = nla_get_u32(spec[NL80211_SAR_ATTR_SPECS_RANGE_INDEX]); 18068 18069 /* check if range_index exceeds num_freq_ranges */ 18070 if (range_index >= rdev->wiphy.sar_capa->num_freq_ranges) 18071 return -EINVAL; 18072 18073 /* check if range_index duplicates */ 18074 for (i = 0; i < index; i++) { 18075 if (sar_specs->sub_specs[i].freq_range_index == range_index) 18076 return -EINVAL; 18077 } 18078 18079 sar_specs->sub_specs[index].power = 18080 nla_get_s32(spec[NL80211_SAR_ATTR_SPECS_POWER]); 18081 18082 sar_specs->sub_specs[index].freq_range_index = range_index; 18083 18084 return 0; 18085 } 18086 18087 static int nl80211_set_sar_specs(struct sk_buff *skb, struct genl_info *info) 18088 { 18089 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 18090 struct nlattr *spec[NL80211_SAR_ATTR_SPECS_MAX + 1]; 18091 struct nlattr *tb[NL80211_SAR_ATTR_MAX + 1]; 18092 struct cfg80211_sar_specs *sar_spec; 18093 enum nl80211_sar_type type; 18094 struct nlattr *spec_list; 18095 u32 specs; 18096 int rem, err; 18097 18098 if (!rdev->wiphy.sar_capa || !rdev->ops->set_sar_specs) 18099 return -EOPNOTSUPP; 18100 18101 if (!info->attrs[NL80211_ATTR_SAR_SPEC]) 18102 return -EINVAL; 18103 18104 nla_parse_nested(tb, NL80211_SAR_ATTR_MAX, 18105 info->attrs[NL80211_ATTR_SAR_SPEC], 18106 NULL, NULL); 18107 18108 if (!tb[NL80211_SAR_ATTR_TYPE] || !tb[NL80211_SAR_ATTR_SPECS]) 18109 return -EINVAL; 18110 18111 type = nla_get_u32(tb[NL80211_SAR_ATTR_TYPE]); 18112 if (type != rdev->wiphy.sar_capa->type) 18113 return -EINVAL; 18114 18115 specs = 0; 18116 nla_for_each_nested(spec_list, tb[NL80211_SAR_ATTR_SPECS], rem) 18117 specs++; 18118 18119 if (specs > rdev->wiphy.sar_capa->num_freq_ranges) 18120 return -EINVAL; 18121 18122 sar_spec = kzalloc(struct_size(sar_spec, sub_specs, specs), GFP_KERNEL); 18123 if (!sar_spec) 18124 return -ENOMEM; 18125 18126 sar_spec->num_sub_specs = specs; 18127 sar_spec->type = type; 18128 specs = 0; 18129 nla_for_each_nested(spec_list, tb[NL80211_SAR_ATTR_SPECS], rem) { 18130 nla_parse_nested(spec, NL80211_SAR_ATTR_SPECS_MAX, 18131 spec_list, NULL, NULL); 18132 18133 switch (type) { 18134 case NL80211_SAR_TYPE_POWER: 18135 if (nl80211_set_sar_sub_specs(rdev, sar_spec, 18136 spec, specs)) { 18137 err = -EINVAL; 18138 goto error; 18139 } 18140 break; 18141 default: 18142 err = -EINVAL; 18143 goto error; 18144 } 18145 specs++; 18146 } 18147 18148 sar_spec->num_sub_specs = specs; 18149 18150 rdev->cur_cmd_info = info; 18151 err = rdev_set_sar_specs(rdev, sar_spec); 18152 rdev->cur_cmd_info = NULL; 18153 error: 18154 kfree(sar_spec); 18155 return err; 18156 } 18157 18158 #define SELECTOR(__sel, name, value) \ 18159 ((__sel) == (value)) ? NL80211_IFL_SEL_##name : 18160 int __missing_selector(void); 18161 #define IFLAGS(__val) INTERNAL_FLAG_SELECTORS(__val) __missing_selector() 18162 18163 static const struct genl_ops nl80211_ops[] = { 18164 { 18165 .cmd = NL80211_CMD_GET_WIPHY, 18166 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 18167 .doit = nl80211_get_wiphy, 18168 .dumpit = nl80211_dump_wiphy, 18169 .done = nl80211_dump_wiphy_done, 18170 /* can be retrieved by unprivileged users */ 18171 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WIPHY), 18172 }, 18173 }; 18174 18175 static const struct genl_small_ops nl80211_small_ops[] = { 18176 { 18177 .cmd = NL80211_CMD_SET_WIPHY, 18178 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 18179 .doit = nl80211_set_wiphy, 18180 .flags = GENL_UNS_ADMIN_PERM, 18181 }, 18182 { 18183 .cmd = NL80211_CMD_GET_INTERFACE, 18184 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 18185 .doit = nl80211_get_interface, 18186 .dumpit = nl80211_dump_interface, 18187 /* can be retrieved by unprivileged users */ 18188 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV), 18189 }, 18190 { 18191 .cmd = NL80211_CMD_SET_INTERFACE, 18192 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 18193 .doit = nl80211_set_interface, 18194 .flags = GENL_UNS_ADMIN_PERM, 18195 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV | 18196 NL80211_FLAG_NEED_RTNL), 18197 }, 18198 { 18199 .cmd = NL80211_CMD_NEW_INTERFACE, 18200 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 18201 .doit = nl80211_new_interface, 18202 .flags = GENL_UNS_ADMIN_PERM, 18203 .internal_flags = 18204 IFLAGS(NL80211_FLAG_NEED_WIPHY | 18205 NL80211_FLAG_NEED_RTNL | 18206 /* we take the wiphy mutex later ourselves */ 18207 NL80211_FLAG_NO_WIPHY_MTX), 18208 }, 18209 { 18210 .cmd = NL80211_CMD_DEL_INTERFACE, 18211 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 18212 .doit = nl80211_del_interface, 18213 .flags = GENL_UNS_ADMIN_PERM, 18214 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV | 18215 NL80211_FLAG_NEED_RTNL), 18216 }, 18217 { 18218 .cmd = NL80211_CMD_GET_KEY, 18219 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 18220 .doit = nl80211_get_key, 18221 .flags = GENL_UNS_ADMIN_PERM, 18222 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP), 18223 }, 18224 { 18225 .cmd = NL80211_CMD_SET_KEY, 18226 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 18227 .doit = nl80211_set_key, 18228 .flags = GENL_UNS_ADMIN_PERM, 18229 /* cannot use NL80211_FLAG_MLO_VALID_LINK_ID, depends on key */ 18230 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP | 18231 NL80211_FLAG_CLEAR_SKB), 18232 }, 18233 { 18234 .cmd = NL80211_CMD_NEW_KEY, 18235 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 18236 .doit = nl80211_new_key, 18237 .flags = GENL_UNS_ADMIN_PERM, 18238 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP | 18239 NL80211_FLAG_CLEAR_SKB), 18240 }, 18241 { 18242 .cmd = NL80211_CMD_DEL_KEY, 18243 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 18244 .doit = nl80211_del_key, 18245 .flags = GENL_UNS_ADMIN_PERM, 18246 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP), 18247 }, 18248 { 18249 .cmd = NL80211_CMD_SET_BEACON, 18250 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 18251 .flags = GENL_UNS_ADMIN_PERM, 18252 .doit = nl80211_set_beacon, 18253 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP | 18254 NL80211_FLAG_MLO_VALID_LINK_ID), 18255 }, 18256 { 18257 .cmd = NL80211_CMD_START_AP, 18258 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 18259 .flags = GENL_UNS_ADMIN_PERM, 18260 .doit = nl80211_start_ap, 18261 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP | 18262 NL80211_FLAG_MLO_VALID_LINK_ID), 18263 }, 18264 { 18265 .cmd = NL80211_CMD_STOP_AP, 18266 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 18267 .flags = GENL_UNS_ADMIN_PERM, 18268 .doit = nl80211_stop_ap, 18269 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP | 18270 NL80211_FLAG_MLO_VALID_LINK_ID), 18271 }, 18272 { 18273 .cmd = NL80211_CMD_GET_STATION, 18274 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 18275 .doit = nl80211_get_station, 18276 .dumpit = nl80211_dump_station, 18277 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV), 18278 }, 18279 { 18280 .cmd = NL80211_CMD_SET_STATION, 18281 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 18282 .doit = nl80211_set_station, 18283 .flags = GENL_UNS_ADMIN_PERM, 18284 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP), 18285 }, 18286 { 18287 .cmd = NL80211_CMD_NEW_STATION, 18288 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 18289 .doit = nl80211_new_station, 18290 .flags = GENL_UNS_ADMIN_PERM, 18291 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP), 18292 }, 18293 { 18294 .cmd = NL80211_CMD_DEL_STATION, 18295 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 18296 .doit = nl80211_del_station, 18297 .flags = GENL_UNS_ADMIN_PERM, 18298 /* cannot use NL80211_FLAG_MLO_VALID_LINK_ID, depends on 18299 * whether MAC address is passed or not. If MAC address is 18300 * passed, then even during MLO, link ID is not required. 18301 */ 18302 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP), 18303 }, 18304 { 18305 .cmd = NL80211_CMD_GET_MPATH, 18306 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 18307 .doit = nl80211_get_mpath, 18308 .dumpit = nl80211_dump_mpath, 18309 .flags = GENL_UNS_ADMIN_PERM, 18310 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP), 18311 }, 18312 { 18313 .cmd = NL80211_CMD_GET_MPP, 18314 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 18315 .doit = nl80211_get_mpp, 18316 .dumpit = nl80211_dump_mpp, 18317 .flags = GENL_UNS_ADMIN_PERM, 18318 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP), 18319 }, 18320 { 18321 .cmd = NL80211_CMD_SET_MPATH, 18322 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 18323 .doit = nl80211_set_mpath, 18324 .flags = GENL_UNS_ADMIN_PERM, 18325 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP), 18326 }, 18327 { 18328 .cmd = NL80211_CMD_NEW_MPATH, 18329 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 18330 .doit = nl80211_new_mpath, 18331 .flags = GENL_UNS_ADMIN_PERM, 18332 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP), 18333 }, 18334 { 18335 .cmd = NL80211_CMD_DEL_MPATH, 18336 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 18337 .doit = nl80211_del_mpath, 18338 .flags = GENL_UNS_ADMIN_PERM, 18339 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP), 18340 }, 18341 { 18342 .cmd = NL80211_CMD_SET_BSS, 18343 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 18344 .doit = nl80211_set_bss, 18345 .flags = GENL_UNS_ADMIN_PERM, 18346 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP | 18347 NL80211_FLAG_MLO_VALID_LINK_ID), 18348 }, 18349 { 18350 .cmd = NL80211_CMD_GET_REG, 18351 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 18352 .doit = nl80211_get_reg_do, 18353 .dumpit = nl80211_get_reg_dump, 18354 /* can be retrieved by unprivileged users */ 18355 }, 18356 #ifdef CONFIG_CFG80211_CRDA_SUPPORT 18357 { 18358 .cmd = NL80211_CMD_SET_REG, 18359 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 18360 .doit = nl80211_set_reg, 18361 .flags = GENL_ADMIN_PERM, 18362 }, 18363 #endif 18364 { 18365 .cmd = NL80211_CMD_REQ_SET_REG, 18366 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 18367 .doit = nl80211_req_set_reg, 18368 .flags = GENL_ADMIN_PERM, 18369 }, 18370 { 18371 .cmd = NL80211_CMD_RELOAD_REGDB, 18372 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 18373 .doit = nl80211_reload_regdb, 18374 .flags = GENL_ADMIN_PERM, 18375 }, 18376 { 18377 .cmd = NL80211_CMD_GET_MESH_CONFIG, 18378 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 18379 .doit = nl80211_get_mesh_config, 18380 /* can be retrieved by unprivileged users */ 18381 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP), 18382 }, 18383 { 18384 .cmd = NL80211_CMD_SET_MESH_CONFIG, 18385 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 18386 .doit = nl80211_update_mesh_config, 18387 .flags = GENL_UNS_ADMIN_PERM, 18388 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP), 18389 }, 18390 { 18391 .cmd = NL80211_CMD_TRIGGER_SCAN, 18392 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 18393 .doit = nl80211_trigger_scan, 18394 .flags = GENL_UNS_ADMIN_PERM, 18395 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP), 18396 }, 18397 { 18398 .cmd = NL80211_CMD_ABORT_SCAN, 18399 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 18400 .doit = nl80211_abort_scan, 18401 .flags = GENL_UNS_ADMIN_PERM, 18402 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP), 18403 }, 18404 { 18405 .cmd = NL80211_CMD_GET_SCAN, 18406 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 18407 .dumpit = nl80211_dump_scan, 18408 }, 18409 { 18410 .cmd = NL80211_CMD_START_SCHED_SCAN, 18411 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 18412 .doit = nl80211_start_sched_scan, 18413 .flags = GENL_UNS_ADMIN_PERM, 18414 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP), 18415 }, 18416 { 18417 .cmd = NL80211_CMD_STOP_SCHED_SCAN, 18418 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 18419 .doit = nl80211_stop_sched_scan, 18420 .flags = GENL_UNS_ADMIN_PERM, 18421 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP), 18422 }, 18423 { 18424 .cmd = NL80211_CMD_AUTHENTICATE, 18425 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 18426 .doit = nl80211_authenticate, 18427 .flags = GENL_UNS_ADMIN_PERM, 18428 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP | 18429 NL80211_FLAG_CLEAR_SKB), 18430 }, 18431 { 18432 .cmd = NL80211_CMD_ASSOCIATE, 18433 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 18434 .doit = nl80211_associate, 18435 .flags = GENL_UNS_ADMIN_PERM, 18436 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP | 18437 NL80211_FLAG_CLEAR_SKB), 18438 }, 18439 { 18440 .cmd = NL80211_CMD_DEAUTHENTICATE, 18441 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 18442 .doit = nl80211_deauthenticate, 18443 .flags = GENL_UNS_ADMIN_PERM, 18444 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP), 18445 }, 18446 { 18447 .cmd = NL80211_CMD_DISASSOCIATE, 18448 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 18449 .doit = nl80211_disassociate, 18450 .flags = GENL_UNS_ADMIN_PERM, 18451 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP), 18452 }, 18453 { 18454 .cmd = NL80211_CMD_JOIN_IBSS, 18455 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 18456 .doit = nl80211_join_ibss, 18457 .flags = GENL_UNS_ADMIN_PERM, 18458 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP), 18459 }, 18460 { 18461 .cmd = NL80211_CMD_LEAVE_IBSS, 18462 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 18463 .doit = nl80211_leave_ibss, 18464 .flags = GENL_UNS_ADMIN_PERM, 18465 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP), 18466 }, 18467 #ifdef CONFIG_NL80211_TESTMODE 18468 { 18469 .cmd = NL80211_CMD_TESTMODE, 18470 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 18471 .doit = nl80211_testmode_do, 18472 .dumpit = nl80211_testmode_dump, 18473 .flags = GENL_UNS_ADMIN_PERM, 18474 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WIPHY), 18475 }, 18476 #endif 18477 { 18478 .cmd = NL80211_CMD_CONNECT, 18479 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 18480 .doit = nl80211_connect, 18481 .flags = GENL_UNS_ADMIN_PERM, 18482 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP | 18483 NL80211_FLAG_CLEAR_SKB), 18484 }, 18485 { 18486 .cmd = NL80211_CMD_UPDATE_CONNECT_PARAMS, 18487 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 18488 .doit = nl80211_update_connect_params, 18489 .flags = GENL_ADMIN_PERM, 18490 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP | 18491 NL80211_FLAG_CLEAR_SKB), 18492 }, 18493 { 18494 .cmd = NL80211_CMD_DISCONNECT, 18495 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 18496 .doit = nl80211_disconnect, 18497 .flags = GENL_UNS_ADMIN_PERM, 18498 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP), 18499 }, 18500 { 18501 .cmd = NL80211_CMD_SET_WIPHY_NETNS, 18502 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 18503 .doit = nl80211_wiphy_netns, 18504 .flags = GENL_UNS_ADMIN_PERM, 18505 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WIPHY | 18506 NL80211_FLAG_NEED_RTNL | 18507 NL80211_FLAG_NO_WIPHY_MTX), 18508 }, 18509 { 18510 .cmd = NL80211_CMD_GET_SURVEY, 18511 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 18512 .dumpit = nl80211_dump_survey, 18513 }, 18514 { 18515 .cmd = NL80211_CMD_SET_PMKSA, 18516 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 18517 .doit = nl80211_set_pmksa, 18518 .flags = GENL_UNS_ADMIN_PERM, 18519 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP | 18520 NL80211_FLAG_CLEAR_SKB), 18521 }, 18522 { 18523 .cmd = NL80211_CMD_DEL_PMKSA, 18524 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 18525 .doit = nl80211_del_pmksa, 18526 .flags = GENL_UNS_ADMIN_PERM, 18527 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP), 18528 }, 18529 { 18530 .cmd = NL80211_CMD_FLUSH_PMKSA, 18531 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 18532 .doit = nl80211_flush_pmksa, 18533 .flags = GENL_UNS_ADMIN_PERM, 18534 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP), 18535 }, 18536 { 18537 .cmd = NL80211_CMD_REMAIN_ON_CHANNEL, 18538 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 18539 .doit = nl80211_remain_on_channel, 18540 .flags = GENL_UNS_ADMIN_PERM, 18541 /* FIXME: requiring a link ID here is probably not good */ 18542 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP | 18543 NL80211_FLAG_MLO_VALID_LINK_ID), 18544 }, 18545 { 18546 .cmd = NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL, 18547 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 18548 .doit = nl80211_cancel_remain_on_channel, 18549 .flags = GENL_UNS_ADMIN_PERM, 18550 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP), 18551 }, 18552 { 18553 .cmd = NL80211_CMD_SET_TX_BITRATE_MASK, 18554 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 18555 .doit = nl80211_set_tx_bitrate_mask, 18556 .flags = GENL_UNS_ADMIN_PERM, 18557 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV | 18558 NL80211_FLAG_MLO_VALID_LINK_ID), 18559 }, 18560 { 18561 .cmd = NL80211_CMD_REGISTER_FRAME, 18562 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 18563 .doit = nl80211_register_mgmt, 18564 .flags = GENL_UNS_ADMIN_PERM, 18565 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV), 18566 }, 18567 { 18568 .cmd = NL80211_CMD_FRAME, 18569 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 18570 .doit = nl80211_tx_mgmt, 18571 .flags = GENL_UNS_ADMIN_PERM, 18572 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP), 18573 }, 18574 { 18575 .cmd = NL80211_CMD_FRAME_WAIT_CANCEL, 18576 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 18577 .doit = nl80211_tx_mgmt_cancel_wait, 18578 .flags = GENL_UNS_ADMIN_PERM, 18579 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP), 18580 }, 18581 { 18582 .cmd = NL80211_CMD_SET_POWER_SAVE, 18583 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 18584 .doit = nl80211_set_power_save, 18585 .flags = GENL_UNS_ADMIN_PERM, 18586 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV), 18587 }, 18588 { 18589 .cmd = NL80211_CMD_GET_POWER_SAVE, 18590 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 18591 .doit = nl80211_get_power_save, 18592 /* can be retrieved by unprivileged users */ 18593 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV), 18594 }, 18595 { 18596 .cmd = NL80211_CMD_SET_CQM, 18597 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 18598 .doit = nl80211_set_cqm, 18599 .flags = GENL_UNS_ADMIN_PERM, 18600 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV), 18601 }, 18602 { 18603 .cmd = NL80211_CMD_SET_CHANNEL, 18604 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 18605 .doit = nl80211_set_channel, 18606 .flags = GENL_UNS_ADMIN_PERM, 18607 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV | 18608 NL80211_FLAG_MLO_VALID_LINK_ID), 18609 }, 18610 { 18611 .cmd = NL80211_CMD_JOIN_MESH, 18612 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 18613 .doit = nl80211_join_mesh, 18614 .flags = GENL_UNS_ADMIN_PERM, 18615 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP), 18616 }, 18617 { 18618 .cmd = NL80211_CMD_LEAVE_MESH, 18619 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 18620 .doit = nl80211_leave_mesh, 18621 .flags = GENL_UNS_ADMIN_PERM, 18622 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP), 18623 }, 18624 { 18625 .cmd = NL80211_CMD_JOIN_OCB, 18626 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 18627 .doit = nl80211_join_ocb, 18628 .flags = GENL_UNS_ADMIN_PERM, 18629 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP), 18630 }, 18631 { 18632 .cmd = NL80211_CMD_LEAVE_OCB, 18633 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 18634 .doit = nl80211_leave_ocb, 18635 .flags = GENL_UNS_ADMIN_PERM, 18636 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP), 18637 }, 18638 #ifdef CONFIG_PM 18639 { 18640 .cmd = NL80211_CMD_GET_WOWLAN, 18641 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 18642 .doit = nl80211_get_wowlan, 18643 /* can be retrieved by unprivileged users */ 18644 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WIPHY), 18645 }, 18646 { 18647 .cmd = NL80211_CMD_SET_WOWLAN, 18648 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 18649 .doit = nl80211_set_wowlan, 18650 .flags = GENL_UNS_ADMIN_PERM, 18651 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WIPHY), 18652 }, 18653 #endif 18654 { 18655 .cmd = NL80211_CMD_SET_REKEY_OFFLOAD, 18656 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 18657 .doit = nl80211_set_rekey_data, 18658 .flags = GENL_UNS_ADMIN_PERM, 18659 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP | 18660 NL80211_FLAG_CLEAR_SKB), 18661 }, 18662 { 18663 .cmd = NL80211_CMD_TDLS_MGMT, 18664 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 18665 .doit = nl80211_tdls_mgmt, 18666 .flags = GENL_UNS_ADMIN_PERM, 18667 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP | 18668 NL80211_FLAG_MLO_VALID_LINK_ID), 18669 }, 18670 { 18671 .cmd = NL80211_CMD_TDLS_OPER, 18672 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 18673 .doit = nl80211_tdls_oper, 18674 .flags = GENL_UNS_ADMIN_PERM, 18675 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP), 18676 }, 18677 { 18678 .cmd = NL80211_CMD_UNEXPECTED_FRAME, 18679 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 18680 .doit = nl80211_register_unexpected_frame, 18681 .flags = GENL_UNS_ADMIN_PERM, 18682 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV), 18683 }, 18684 { 18685 .cmd = NL80211_CMD_PROBE_CLIENT, 18686 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 18687 .doit = nl80211_probe_client, 18688 .flags = GENL_UNS_ADMIN_PERM, 18689 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP), 18690 }, 18691 { 18692 .cmd = NL80211_CMD_REGISTER_BEACONS, 18693 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 18694 .doit = nl80211_register_beacons, 18695 .flags = GENL_UNS_ADMIN_PERM, 18696 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WIPHY), 18697 }, 18698 { 18699 .cmd = NL80211_CMD_SET_NOACK_MAP, 18700 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 18701 .doit = nl80211_set_noack_map, 18702 .flags = GENL_UNS_ADMIN_PERM, 18703 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV), 18704 }, 18705 { 18706 .cmd = NL80211_CMD_START_P2P_DEVICE, 18707 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 18708 .doit = nl80211_start_p2p_device, 18709 .flags = GENL_UNS_ADMIN_PERM, 18710 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV | 18711 NL80211_FLAG_NEED_RTNL), 18712 }, 18713 { 18714 .cmd = NL80211_CMD_STOP_P2P_DEVICE, 18715 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 18716 .doit = nl80211_stop_p2p_device, 18717 .flags = GENL_UNS_ADMIN_PERM, 18718 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP | 18719 NL80211_FLAG_NEED_RTNL), 18720 }, 18721 { 18722 .cmd = NL80211_CMD_START_NAN, 18723 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 18724 .doit = nl80211_start_nan, 18725 .flags = GENL_ADMIN_PERM, 18726 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV | 18727 NL80211_FLAG_NEED_RTNL), 18728 }, 18729 { 18730 .cmd = NL80211_CMD_STOP_NAN, 18731 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 18732 .doit = nl80211_stop_nan, 18733 .flags = GENL_ADMIN_PERM, 18734 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP | 18735 NL80211_FLAG_NEED_RTNL), 18736 }, 18737 { 18738 .cmd = NL80211_CMD_ADD_NAN_FUNCTION, 18739 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 18740 .doit = nl80211_nan_add_func, 18741 .flags = GENL_ADMIN_PERM, 18742 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP), 18743 }, 18744 { 18745 .cmd = NL80211_CMD_DEL_NAN_FUNCTION, 18746 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 18747 .doit = nl80211_nan_del_func, 18748 .flags = GENL_ADMIN_PERM, 18749 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP), 18750 }, 18751 { 18752 .cmd = NL80211_CMD_CHANGE_NAN_CONFIG, 18753 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 18754 .doit = nl80211_nan_change_config, 18755 .flags = GENL_ADMIN_PERM, 18756 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP), 18757 }, 18758 { 18759 .cmd = NL80211_CMD_SET_MCAST_RATE, 18760 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 18761 .doit = nl80211_set_mcast_rate, 18762 .flags = GENL_UNS_ADMIN_PERM, 18763 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV), 18764 }, 18765 { 18766 .cmd = NL80211_CMD_SET_MAC_ACL, 18767 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 18768 .doit = nl80211_set_mac_acl, 18769 .flags = GENL_UNS_ADMIN_PERM, 18770 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV | 18771 NL80211_FLAG_MLO_UNSUPPORTED), 18772 }, 18773 { 18774 .cmd = NL80211_CMD_RADAR_DETECT, 18775 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 18776 .doit = nl80211_start_radar_detection, 18777 .flags = GENL_UNS_ADMIN_PERM, 18778 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP | 18779 NL80211_FLAG_NO_WIPHY_MTX | 18780 NL80211_FLAG_MLO_VALID_LINK_ID), 18781 }, 18782 { 18783 .cmd = NL80211_CMD_GET_PROTOCOL_FEATURES, 18784 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 18785 .doit = nl80211_get_protocol_features, 18786 }, 18787 { 18788 .cmd = NL80211_CMD_UPDATE_FT_IES, 18789 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 18790 .doit = nl80211_update_ft_ies, 18791 .flags = GENL_UNS_ADMIN_PERM, 18792 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP), 18793 }, 18794 { 18795 .cmd = NL80211_CMD_CRIT_PROTOCOL_START, 18796 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 18797 .doit = nl80211_crit_protocol_start, 18798 .flags = GENL_UNS_ADMIN_PERM, 18799 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP), 18800 }, 18801 { 18802 .cmd = NL80211_CMD_CRIT_PROTOCOL_STOP, 18803 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 18804 .doit = nl80211_crit_protocol_stop, 18805 .flags = GENL_UNS_ADMIN_PERM, 18806 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP), 18807 }, 18808 { 18809 .cmd = NL80211_CMD_GET_COALESCE, 18810 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 18811 .doit = nl80211_get_coalesce, 18812 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WIPHY), 18813 }, 18814 { 18815 .cmd = NL80211_CMD_SET_COALESCE, 18816 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 18817 .doit = nl80211_set_coalesce, 18818 .flags = GENL_UNS_ADMIN_PERM, 18819 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WIPHY), 18820 }, 18821 { 18822 .cmd = NL80211_CMD_CHANNEL_SWITCH, 18823 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 18824 .doit = nl80211_channel_switch, 18825 .flags = GENL_UNS_ADMIN_PERM, 18826 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP | 18827 NL80211_FLAG_MLO_VALID_LINK_ID), 18828 }, 18829 { 18830 .cmd = NL80211_CMD_VENDOR, 18831 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 18832 .doit = nl80211_vendor_cmd, 18833 .dumpit = nl80211_vendor_cmd_dump, 18834 .flags = GENL_UNS_ADMIN_PERM, 18835 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WIPHY | 18836 NL80211_FLAG_CLEAR_SKB), 18837 }, 18838 { 18839 .cmd = NL80211_CMD_SET_QOS_MAP, 18840 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 18841 .doit = nl80211_set_qos_map, 18842 .flags = GENL_UNS_ADMIN_PERM, 18843 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP), 18844 }, 18845 { 18846 .cmd = NL80211_CMD_ADD_TX_TS, 18847 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 18848 .doit = nl80211_add_tx_ts, 18849 .flags = GENL_UNS_ADMIN_PERM, 18850 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP | 18851 NL80211_FLAG_MLO_UNSUPPORTED), 18852 }, 18853 { 18854 .cmd = NL80211_CMD_DEL_TX_TS, 18855 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 18856 .doit = nl80211_del_tx_ts, 18857 .flags = GENL_UNS_ADMIN_PERM, 18858 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP), 18859 }, 18860 { 18861 .cmd = NL80211_CMD_TDLS_CHANNEL_SWITCH, 18862 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 18863 .doit = nl80211_tdls_channel_switch, 18864 .flags = GENL_UNS_ADMIN_PERM, 18865 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP), 18866 }, 18867 { 18868 .cmd = NL80211_CMD_TDLS_CANCEL_CHANNEL_SWITCH, 18869 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 18870 .doit = nl80211_tdls_cancel_channel_switch, 18871 .flags = GENL_UNS_ADMIN_PERM, 18872 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP), 18873 }, 18874 { 18875 .cmd = NL80211_CMD_SET_MULTICAST_TO_UNICAST, 18876 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 18877 .doit = nl80211_set_multicast_to_unicast, 18878 .flags = GENL_UNS_ADMIN_PERM, 18879 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV), 18880 }, 18881 { 18882 .cmd = NL80211_CMD_SET_PMK, 18883 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 18884 .doit = nl80211_set_pmk, 18885 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP | 18886 NL80211_FLAG_CLEAR_SKB), 18887 }, 18888 { 18889 .cmd = NL80211_CMD_DEL_PMK, 18890 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 18891 .doit = nl80211_del_pmk, 18892 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP), 18893 }, 18894 { 18895 .cmd = NL80211_CMD_EXTERNAL_AUTH, 18896 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 18897 .doit = nl80211_external_auth, 18898 .flags = GENL_ADMIN_PERM, 18899 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP), 18900 }, 18901 { 18902 .cmd = NL80211_CMD_CONTROL_PORT_FRAME, 18903 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 18904 .doit = nl80211_tx_control_port, 18905 .flags = GENL_UNS_ADMIN_PERM, 18906 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP), 18907 }, 18908 { 18909 .cmd = NL80211_CMD_GET_FTM_RESPONDER_STATS, 18910 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 18911 .doit = nl80211_get_ftm_responder_stats, 18912 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV | 18913 NL80211_FLAG_MLO_VALID_LINK_ID), 18914 }, 18915 { 18916 .cmd = NL80211_CMD_PEER_MEASUREMENT_START, 18917 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 18918 .doit = nl80211_pmsr_start, 18919 .flags = GENL_UNS_ADMIN_PERM, 18920 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP), 18921 }, 18922 { 18923 .cmd = NL80211_CMD_NOTIFY_RADAR, 18924 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 18925 .doit = nl80211_notify_radar_detection, 18926 .flags = GENL_UNS_ADMIN_PERM, 18927 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP), 18928 }, 18929 { 18930 .cmd = NL80211_CMD_UPDATE_OWE_INFO, 18931 .doit = nl80211_update_owe_info, 18932 .flags = GENL_ADMIN_PERM, 18933 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP), 18934 }, 18935 { 18936 .cmd = NL80211_CMD_PROBE_MESH_LINK, 18937 .doit = nl80211_probe_mesh_link, 18938 .flags = GENL_UNS_ADMIN_PERM, 18939 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP), 18940 }, 18941 { 18942 .cmd = NL80211_CMD_SET_TID_CONFIG, 18943 .doit = nl80211_set_tid_config, 18944 .flags = GENL_UNS_ADMIN_PERM, 18945 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV | 18946 NL80211_FLAG_MLO_VALID_LINK_ID), 18947 }, 18948 { 18949 .cmd = NL80211_CMD_SET_SAR_SPECS, 18950 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 18951 .doit = nl80211_set_sar_specs, 18952 .flags = GENL_UNS_ADMIN_PERM, 18953 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WIPHY | 18954 NL80211_FLAG_NEED_RTNL), 18955 }, 18956 { 18957 .cmd = NL80211_CMD_COLOR_CHANGE_REQUEST, 18958 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 18959 .doit = nl80211_color_change, 18960 .flags = GENL_UNS_ADMIN_PERM, 18961 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP | 18962 NL80211_FLAG_MLO_VALID_LINK_ID), 18963 }, 18964 { 18965 .cmd = NL80211_CMD_SET_FILS_AAD, 18966 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 18967 .doit = nl80211_set_fils_aad, 18968 .flags = GENL_UNS_ADMIN_PERM, 18969 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP), 18970 }, 18971 { 18972 .cmd = NL80211_CMD_ADD_LINK, 18973 .doit = nl80211_add_link, 18974 .flags = GENL_UNS_ADMIN_PERM, 18975 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP), 18976 }, 18977 { 18978 .cmd = NL80211_CMD_REMOVE_LINK, 18979 .doit = nl80211_remove_link, 18980 .flags = GENL_UNS_ADMIN_PERM, 18981 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP | 18982 NL80211_FLAG_MLO_VALID_LINK_ID), 18983 }, 18984 { 18985 .cmd = NL80211_CMD_ADD_LINK_STA, 18986 .doit = nl80211_add_link_station, 18987 .flags = GENL_UNS_ADMIN_PERM, 18988 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP | 18989 NL80211_FLAG_MLO_VALID_LINK_ID), 18990 }, 18991 { 18992 .cmd = NL80211_CMD_MODIFY_LINK_STA, 18993 .doit = nl80211_modify_link_station, 18994 .flags = GENL_UNS_ADMIN_PERM, 18995 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP | 18996 NL80211_FLAG_MLO_VALID_LINK_ID), 18997 }, 18998 { 18999 .cmd = NL80211_CMD_REMOVE_LINK_STA, 19000 .doit = nl80211_remove_link_station, 19001 .flags = GENL_UNS_ADMIN_PERM, 19002 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP | 19003 NL80211_FLAG_MLO_VALID_LINK_ID), 19004 }, 19005 { 19006 .cmd = NL80211_CMD_SET_HW_TIMESTAMP, 19007 .doit = nl80211_set_hw_timestamp, 19008 .flags = GENL_UNS_ADMIN_PERM, 19009 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP), 19010 }, 19011 { 19012 .cmd = NL80211_CMD_SET_TID_TO_LINK_MAPPING, 19013 .doit = nl80211_set_ttlm, 19014 .flags = GENL_UNS_ADMIN_PERM, 19015 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP), 19016 }, 19017 { 19018 .cmd = NL80211_CMD_ASSOC_MLO_RECONF, 19019 .doit = nl80211_assoc_ml_reconf, 19020 .flags = GENL_UNS_ADMIN_PERM, 19021 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP), 19022 }, 19023 { 19024 .cmd = NL80211_CMD_EPCS_CFG, 19025 .doit = nl80211_epcs_cfg, 19026 .flags = GENL_UNS_ADMIN_PERM, 19027 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP), 19028 }, 19029 }; 19030 19031 static struct genl_family nl80211_fam __ro_after_init = { 19032 .name = NL80211_GENL_NAME, /* have users key off the name instead */ 19033 .hdrsize = 0, /* no private header */ 19034 .version = 1, /* no particular meaning now */ 19035 .maxattr = NL80211_ATTR_MAX, 19036 .policy = nl80211_policy, 19037 .netnsok = true, 19038 .pre_doit = nl80211_pre_doit, 19039 .post_doit = nl80211_post_doit, 19040 .module = THIS_MODULE, 19041 .ops = nl80211_ops, 19042 .n_ops = ARRAY_SIZE(nl80211_ops), 19043 .small_ops = nl80211_small_ops, 19044 .n_small_ops = ARRAY_SIZE(nl80211_small_ops), 19045 .resv_start_op = NL80211_CMD_REMOVE_LINK_STA + 1, 19046 .mcgrps = nl80211_mcgrps, 19047 .n_mcgrps = ARRAY_SIZE(nl80211_mcgrps), 19048 .parallel_ops = true, 19049 }; 19050 19051 /* notification functions */ 19052 19053 void nl80211_notify_wiphy(struct cfg80211_registered_device *rdev, 19054 enum nl80211_commands cmd) 19055 { 19056 struct sk_buff *msg; 19057 struct nl80211_dump_wiphy_state state = {}; 19058 19059 WARN_ON(cmd != NL80211_CMD_NEW_WIPHY && 19060 cmd != NL80211_CMD_DEL_WIPHY); 19061 19062 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 19063 if (!msg) 19064 return; 19065 19066 if (nl80211_send_wiphy(rdev, cmd, msg, 0, 0, 0, &state) < 0) { 19067 nlmsg_free(msg); 19068 return; 19069 } 19070 19071 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 19072 NL80211_MCGRP_CONFIG, GFP_KERNEL); 19073 } 19074 19075 void nl80211_notify_iface(struct cfg80211_registered_device *rdev, 19076 struct wireless_dev *wdev, 19077 enum nl80211_commands cmd) 19078 { 19079 struct sk_buff *msg; 19080 19081 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 19082 if (!msg) 19083 return; 19084 19085 if (nl80211_send_iface(msg, 0, 0, 0, rdev, wdev, cmd) < 0) { 19086 nlmsg_free(msg); 19087 return; 19088 } 19089 19090 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 19091 NL80211_MCGRP_CONFIG, GFP_KERNEL); 19092 } 19093 19094 static int nl80211_add_scan_req(struct sk_buff *msg, 19095 struct cfg80211_registered_device *rdev) 19096 { 19097 struct cfg80211_scan_request_int *req = rdev->scan_req; 19098 struct nlattr *nest; 19099 int i; 19100 struct cfg80211_scan_info *info; 19101 19102 if (WARN_ON(!req)) 19103 return 0; 19104 19105 nest = nla_nest_start_noflag(msg, NL80211_ATTR_SCAN_SSIDS); 19106 if (!nest) 19107 goto nla_put_failure; 19108 for (i = 0; i < req->req.n_ssids; i++) { 19109 if (nla_put(msg, i, req->req.ssids[i].ssid_len, 19110 req->req.ssids[i].ssid)) 19111 goto nla_put_failure; 19112 } 19113 nla_nest_end(msg, nest); 19114 19115 if (req->req.flags & NL80211_SCAN_FLAG_FREQ_KHZ) { 19116 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQ_KHZ); 19117 if (!nest) 19118 goto nla_put_failure; 19119 for (i = 0; i < req->req.n_channels; i++) { 19120 if (nla_put_u32(msg, i, 19121 ieee80211_channel_to_khz(req->req.channels[i]))) 19122 goto nla_put_failure; 19123 } 19124 nla_nest_end(msg, nest); 19125 } else { 19126 nest = nla_nest_start_noflag(msg, 19127 NL80211_ATTR_SCAN_FREQUENCIES); 19128 if (!nest) 19129 goto nla_put_failure; 19130 for (i = 0; i < req->req.n_channels; i++) { 19131 if (nla_put_u32(msg, i, 19132 req->req.channels[i]->center_freq)) 19133 goto nla_put_failure; 19134 } 19135 nla_nest_end(msg, nest); 19136 } 19137 19138 if (req->req.ie && 19139 nla_put(msg, NL80211_ATTR_IE, req->req.ie_len, req->req.ie)) 19140 goto nla_put_failure; 19141 19142 if (req->req.flags && 19143 nla_put_u32(msg, NL80211_ATTR_SCAN_FLAGS, req->req.flags)) 19144 goto nla_put_failure; 19145 19146 info = rdev->int_scan_req ? &rdev->int_scan_req->info : 19147 &rdev->scan_req->info; 19148 if (info->scan_start_tsf && 19149 (nla_put_u64_64bit(msg, NL80211_ATTR_SCAN_START_TIME_TSF, 19150 info->scan_start_tsf, NL80211_BSS_PAD) || 19151 nla_put(msg, NL80211_ATTR_SCAN_START_TIME_TSF_BSSID, ETH_ALEN, 19152 info->tsf_bssid))) 19153 goto nla_put_failure; 19154 19155 return 0; 19156 nla_put_failure: 19157 return -ENOBUFS; 19158 } 19159 19160 static int nl80211_prep_scan_msg(struct sk_buff *msg, 19161 struct cfg80211_registered_device *rdev, 19162 struct wireless_dev *wdev, 19163 u32 portid, u32 seq, int flags, 19164 u32 cmd) 19165 { 19166 void *hdr; 19167 19168 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd); 19169 if (!hdr) 19170 return -1; 19171 19172 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 19173 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX, 19174 wdev->netdev->ifindex)) || 19175 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev), 19176 NL80211_ATTR_PAD)) 19177 goto nla_put_failure; 19178 19179 /* ignore errors and send incomplete event anyway */ 19180 nl80211_add_scan_req(msg, rdev); 19181 19182 genlmsg_end(msg, hdr); 19183 return 0; 19184 19185 nla_put_failure: 19186 genlmsg_cancel(msg, hdr); 19187 return -EMSGSIZE; 19188 } 19189 19190 static int 19191 nl80211_prep_sched_scan_msg(struct sk_buff *msg, 19192 struct cfg80211_sched_scan_request *req, u32 cmd) 19193 { 19194 void *hdr; 19195 19196 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd); 19197 if (!hdr) 19198 return -1; 19199 19200 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, 19201 wiphy_to_rdev(req->wiphy)->wiphy_idx) || 19202 nla_put_u32(msg, NL80211_ATTR_IFINDEX, req->dev->ifindex) || 19203 nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, req->reqid, 19204 NL80211_ATTR_PAD)) 19205 goto nla_put_failure; 19206 19207 genlmsg_end(msg, hdr); 19208 return 0; 19209 19210 nla_put_failure: 19211 genlmsg_cancel(msg, hdr); 19212 return -EMSGSIZE; 19213 } 19214 19215 void nl80211_send_scan_start(struct cfg80211_registered_device *rdev, 19216 struct wireless_dev *wdev) 19217 { 19218 struct sk_buff *msg; 19219 19220 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 19221 if (!msg) 19222 return; 19223 19224 if (nl80211_prep_scan_msg(msg, rdev, wdev, 0, 0, 0, 19225 NL80211_CMD_TRIGGER_SCAN) < 0) { 19226 nlmsg_free(msg); 19227 return; 19228 } 19229 19230 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 19231 NL80211_MCGRP_SCAN, GFP_KERNEL); 19232 } 19233 19234 struct sk_buff *nl80211_build_scan_msg(struct cfg80211_registered_device *rdev, 19235 struct wireless_dev *wdev, bool aborted) 19236 { 19237 struct sk_buff *msg; 19238 19239 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 19240 if (!msg) 19241 return NULL; 19242 19243 if (nl80211_prep_scan_msg(msg, rdev, wdev, 0, 0, 0, 19244 aborted ? NL80211_CMD_SCAN_ABORTED : 19245 NL80211_CMD_NEW_SCAN_RESULTS) < 0) { 19246 nlmsg_free(msg); 19247 return NULL; 19248 } 19249 19250 return msg; 19251 } 19252 19253 /* send message created by nl80211_build_scan_msg() */ 19254 void nl80211_send_scan_msg(struct cfg80211_registered_device *rdev, 19255 struct sk_buff *msg) 19256 { 19257 if (!msg) 19258 return; 19259 19260 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 19261 NL80211_MCGRP_SCAN, GFP_KERNEL); 19262 } 19263 19264 void nl80211_send_sched_scan(struct cfg80211_sched_scan_request *req, u32 cmd) 19265 { 19266 struct sk_buff *msg; 19267 19268 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 19269 if (!msg) 19270 return; 19271 19272 if (nl80211_prep_sched_scan_msg(msg, req, cmd) < 0) { 19273 nlmsg_free(msg); 19274 return; 19275 } 19276 19277 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(req->wiphy), msg, 0, 19278 NL80211_MCGRP_SCAN, GFP_KERNEL); 19279 } 19280 19281 static bool nl80211_reg_change_event_fill(struct sk_buff *msg, 19282 struct regulatory_request *request) 19283 { 19284 /* Userspace can always count this one always being set */ 19285 if (nla_put_u8(msg, NL80211_ATTR_REG_INITIATOR, request->initiator)) 19286 goto nla_put_failure; 19287 19288 if (request->alpha2[0] == '0' && request->alpha2[1] == '0') { 19289 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE, 19290 NL80211_REGDOM_TYPE_WORLD)) 19291 goto nla_put_failure; 19292 } else if (request->alpha2[0] == '9' && request->alpha2[1] == '9') { 19293 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE, 19294 NL80211_REGDOM_TYPE_CUSTOM_WORLD)) 19295 goto nla_put_failure; 19296 } else if ((request->alpha2[0] == '9' && request->alpha2[1] == '8') || 19297 request->intersect) { 19298 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE, 19299 NL80211_REGDOM_TYPE_INTERSECTION)) 19300 goto nla_put_failure; 19301 } else { 19302 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE, 19303 NL80211_REGDOM_TYPE_COUNTRY) || 19304 nla_put_string(msg, NL80211_ATTR_REG_ALPHA2, 19305 request->alpha2)) 19306 goto nla_put_failure; 19307 } 19308 19309 if (request->wiphy_idx != WIPHY_IDX_INVALID) { 19310 struct wiphy *wiphy = wiphy_idx_to_wiphy(request->wiphy_idx); 19311 19312 if (wiphy && 19313 nla_put_u32(msg, NL80211_ATTR_WIPHY, request->wiphy_idx)) 19314 goto nla_put_failure; 19315 19316 if (wiphy && 19317 wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED && 19318 nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG)) 19319 goto nla_put_failure; 19320 } 19321 19322 return true; 19323 19324 nla_put_failure: 19325 return false; 19326 } 19327 19328 /* 19329 * This can happen on global regulatory changes or device specific settings 19330 * based on custom regulatory domains. 19331 */ 19332 void nl80211_common_reg_change_event(enum nl80211_commands cmd_id, 19333 struct regulatory_request *request) 19334 { 19335 struct sk_buff *msg; 19336 void *hdr; 19337 19338 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 19339 if (!msg) 19340 return; 19341 19342 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd_id); 19343 if (!hdr) 19344 goto nla_put_failure; 19345 19346 if (!nl80211_reg_change_event_fill(msg, request)) 19347 goto nla_put_failure; 19348 19349 genlmsg_end(msg, hdr); 19350 19351 genlmsg_multicast_allns(&nl80211_fam, msg, 0, 19352 NL80211_MCGRP_REGULATORY); 19353 19354 return; 19355 19356 nla_put_failure: 19357 nlmsg_free(msg); 19358 } 19359 19360 struct nl80211_mlme_event { 19361 enum nl80211_commands cmd; 19362 const u8 *buf; 19363 size_t buf_len; 19364 int uapsd_queues; 19365 const u8 *req_ies; 19366 size_t req_ies_len; 19367 bool reconnect; 19368 }; 19369 19370 static void nl80211_send_mlme_event(struct cfg80211_registered_device *rdev, 19371 struct net_device *netdev, 19372 const struct nl80211_mlme_event *event, 19373 gfp_t gfp) 19374 { 19375 struct sk_buff *msg; 19376 void *hdr; 19377 19378 msg = nlmsg_new(100 + event->buf_len + event->req_ies_len, gfp); 19379 if (!msg) 19380 return; 19381 19382 hdr = nl80211hdr_put(msg, 0, 0, 0, event->cmd); 19383 if (!hdr) { 19384 nlmsg_free(msg); 19385 return; 19386 } 19387 19388 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 19389 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) || 19390 nla_put(msg, NL80211_ATTR_FRAME, event->buf_len, event->buf) || 19391 (event->req_ies && 19392 nla_put(msg, NL80211_ATTR_REQ_IE, event->req_ies_len, 19393 event->req_ies))) 19394 goto nla_put_failure; 19395 19396 if (event->reconnect && 19397 nla_put_flag(msg, NL80211_ATTR_RECONNECT_REQUESTED)) 19398 goto nla_put_failure; 19399 19400 if (event->uapsd_queues >= 0) { 19401 struct nlattr *nla_wmm = 19402 nla_nest_start_noflag(msg, NL80211_ATTR_STA_WME); 19403 if (!nla_wmm) 19404 goto nla_put_failure; 19405 19406 if (nla_put_u8(msg, NL80211_STA_WME_UAPSD_QUEUES, 19407 event->uapsd_queues)) 19408 goto nla_put_failure; 19409 19410 nla_nest_end(msg, nla_wmm); 19411 } 19412 19413 genlmsg_end(msg, hdr); 19414 19415 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 19416 NL80211_MCGRP_MLME, gfp); 19417 return; 19418 19419 nla_put_failure: 19420 nlmsg_free(msg); 19421 } 19422 19423 void nl80211_send_rx_auth(struct cfg80211_registered_device *rdev, 19424 struct net_device *netdev, const u8 *buf, 19425 size_t len, gfp_t gfp) 19426 { 19427 struct nl80211_mlme_event event = { 19428 .cmd = NL80211_CMD_AUTHENTICATE, 19429 .buf = buf, 19430 .buf_len = len, 19431 .uapsd_queues = -1, 19432 }; 19433 19434 nl80211_send_mlme_event(rdev, netdev, &event, gfp); 19435 } 19436 19437 void nl80211_send_rx_assoc(struct cfg80211_registered_device *rdev, 19438 struct net_device *netdev, 19439 const struct cfg80211_rx_assoc_resp_data *data) 19440 { 19441 struct nl80211_mlme_event event = { 19442 .cmd = NL80211_CMD_ASSOCIATE, 19443 .buf = data->buf, 19444 .buf_len = data->len, 19445 .uapsd_queues = data->uapsd_queues, 19446 .req_ies = data->req_ies, 19447 .req_ies_len = data->req_ies_len, 19448 }; 19449 19450 nl80211_send_mlme_event(rdev, netdev, &event, GFP_KERNEL); 19451 } 19452 19453 void nl80211_send_deauth(struct cfg80211_registered_device *rdev, 19454 struct net_device *netdev, const u8 *buf, 19455 size_t len, bool reconnect, gfp_t gfp) 19456 { 19457 struct nl80211_mlme_event event = { 19458 .cmd = NL80211_CMD_DEAUTHENTICATE, 19459 .buf = buf, 19460 .buf_len = len, 19461 .reconnect = reconnect, 19462 .uapsd_queues = -1, 19463 }; 19464 19465 nl80211_send_mlme_event(rdev, netdev, &event, gfp); 19466 } 19467 19468 void nl80211_send_disassoc(struct cfg80211_registered_device *rdev, 19469 struct net_device *netdev, const u8 *buf, 19470 size_t len, bool reconnect, gfp_t gfp) 19471 { 19472 struct nl80211_mlme_event event = { 19473 .cmd = NL80211_CMD_DISASSOCIATE, 19474 .buf = buf, 19475 .buf_len = len, 19476 .reconnect = reconnect, 19477 .uapsd_queues = -1, 19478 }; 19479 19480 nl80211_send_mlme_event(rdev, netdev, &event, gfp); 19481 } 19482 19483 void cfg80211_rx_unprot_mlme_mgmt(struct net_device *dev, const u8 *buf, 19484 size_t len) 19485 { 19486 struct wireless_dev *wdev = dev->ieee80211_ptr; 19487 struct wiphy *wiphy = wdev->wiphy; 19488 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 19489 const struct ieee80211_mgmt *mgmt = (void *)buf; 19490 struct nl80211_mlme_event event = { 19491 .buf = buf, 19492 .buf_len = len, 19493 .uapsd_queues = -1, 19494 }; 19495 19496 if (WARN_ON(len < 2)) 19497 return; 19498 19499 if (ieee80211_is_deauth(mgmt->frame_control)) { 19500 event.cmd = NL80211_CMD_UNPROT_DEAUTHENTICATE; 19501 } else if (ieee80211_is_disassoc(mgmt->frame_control)) { 19502 event.cmd = NL80211_CMD_UNPROT_DISASSOCIATE; 19503 } else if (ieee80211_is_beacon(mgmt->frame_control)) { 19504 if (wdev->unprot_beacon_reported && 19505 elapsed_jiffies_msecs(wdev->unprot_beacon_reported) < 10000) 19506 return; 19507 event.cmd = NL80211_CMD_UNPROT_BEACON; 19508 wdev->unprot_beacon_reported = jiffies; 19509 } else { 19510 return; 19511 } 19512 19513 trace_cfg80211_rx_unprot_mlme_mgmt(dev, buf, len); 19514 nl80211_send_mlme_event(rdev, dev, &event, GFP_ATOMIC); 19515 } 19516 EXPORT_SYMBOL(cfg80211_rx_unprot_mlme_mgmt); 19517 19518 static void nl80211_send_mlme_timeout(struct cfg80211_registered_device *rdev, 19519 struct net_device *netdev, int cmd, 19520 const u8 *addr, gfp_t gfp) 19521 { 19522 struct sk_buff *msg; 19523 void *hdr; 19524 19525 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 19526 if (!msg) 19527 return; 19528 19529 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd); 19530 if (!hdr) { 19531 nlmsg_free(msg); 19532 return; 19533 } 19534 19535 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 19536 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) || 19537 nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) || 19538 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) 19539 goto nla_put_failure; 19540 19541 genlmsg_end(msg, hdr); 19542 19543 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 19544 NL80211_MCGRP_MLME, gfp); 19545 return; 19546 19547 nla_put_failure: 19548 nlmsg_free(msg); 19549 } 19550 19551 void nl80211_send_auth_timeout(struct cfg80211_registered_device *rdev, 19552 struct net_device *netdev, const u8 *addr, 19553 gfp_t gfp) 19554 { 19555 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_AUTHENTICATE, 19556 addr, gfp); 19557 } 19558 19559 void nl80211_send_assoc_timeout(struct cfg80211_registered_device *rdev, 19560 struct net_device *netdev, const u8 *addr, 19561 gfp_t gfp) 19562 { 19563 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_ASSOCIATE, 19564 addr, gfp); 19565 } 19566 19567 void nl80211_send_connect_result(struct cfg80211_registered_device *rdev, 19568 struct net_device *netdev, 19569 struct cfg80211_connect_resp_params *cr, 19570 gfp_t gfp) 19571 { 19572 struct sk_buff *msg; 19573 void *hdr; 19574 unsigned int link; 19575 size_t link_info_size = 0; 19576 const u8 *connected_addr = cr->valid_links ? 19577 cr->ap_mld_addr : cr->links[0].bssid; 19578 19579 if (cr->valid_links) { 19580 for_each_valid_link(cr, link) { 19581 /* Nested attribute header */ 19582 link_info_size += NLA_HDRLEN; 19583 /* Link ID */ 19584 link_info_size += nla_total_size(sizeof(u8)); 19585 link_info_size += cr->links[link].addr ? 19586 nla_total_size(ETH_ALEN) : 0; 19587 link_info_size += (cr->links[link].bssid || 19588 cr->links[link].bss) ? 19589 nla_total_size(ETH_ALEN) : 0; 19590 link_info_size += nla_total_size(sizeof(u16)); 19591 } 19592 } 19593 19594 msg = nlmsg_new(100 + cr->req_ie_len + cr->resp_ie_len + 19595 cr->fils.kek_len + cr->fils.pmk_len + 19596 (cr->fils.pmkid ? WLAN_PMKID_LEN : 0) + link_info_size, 19597 gfp); 19598 if (!msg) 19599 return; 19600 19601 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONNECT); 19602 if (!hdr) { 19603 nlmsg_free(msg); 19604 return; 19605 } 19606 19607 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 19608 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) || 19609 (connected_addr && 19610 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, connected_addr)) || 19611 nla_put_u16(msg, NL80211_ATTR_STATUS_CODE, 19612 cr->status < 0 ? WLAN_STATUS_UNSPECIFIED_FAILURE : 19613 cr->status) || 19614 (cr->status < 0 && 19615 (nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) || 19616 nla_put_u32(msg, NL80211_ATTR_TIMEOUT_REASON, 19617 cr->timeout_reason))) || 19618 (cr->req_ie && 19619 nla_put(msg, NL80211_ATTR_REQ_IE, cr->req_ie_len, cr->req_ie)) || 19620 (cr->resp_ie && 19621 nla_put(msg, NL80211_ATTR_RESP_IE, cr->resp_ie_len, 19622 cr->resp_ie)) || 19623 (cr->fils.update_erp_next_seq_num && 19624 nla_put_u16(msg, NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM, 19625 cr->fils.erp_next_seq_num)) || 19626 (cr->status == WLAN_STATUS_SUCCESS && 19627 ((cr->fils.kek && 19628 nla_put(msg, NL80211_ATTR_FILS_KEK, cr->fils.kek_len, 19629 cr->fils.kek)) || 19630 (cr->fils.pmk && 19631 nla_put(msg, NL80211_ATTR_PMK, cr->fils.pmk_len, cr->fils.pmk)) || 19632 (cr->fils.pmkid && 19633 nla_put(msg, NL80211_ATTR_PMKID, WLAN_PMKID_LEN, cr->fils.pmkid))))) 19634 goto nla_put_failure; 19635 19636 if (cr->valid_links) { 19637 int i = 1; 19638 struct nlattr *nested; 19639 19640 nested = nla_nest_start(msg, NL80211_ATTR_MLO_LINKS); 19641 if (!nested) 19642 goto nla_put_failure; 19643 19644 for_each_valid_link(cr, link) { 19645 struct nlattr *nested_mlo_links; 19646 const u8 *bssid = cr->links[link].bss ? 19647 cr->links[link].bss->bssid : 19648 cr->links[link].bssid; 19649 19650 nested_mlo_links = nla_nest_start(msg, i); 19651 if (!nested_mlo_links) 19652 goto nla_put_failure; 19653 19654 if (nla_put_u8(msg, NL80211_ATTR_MLO_LINK_ID, link) || 19655 (bssid && 19656 nla_put(msg, NL80211_ATTR_BSSID, ETH_ALEN, bssid)) || 19657 (cr->links[link].addr && 19658 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, 19659 cr->links[link].addr)) || 19660 nla_put_u16(msg, NL80211_ATTR_STATUS_CODE, 19661 cr->links[link].status)) 19662 goto nla_put_failure; 19663 19664 nla_nest_end(msg, nested_mlo_links); 19665 i++; 19666 } 19667 nla_nest_end(msg, nested); 19668 } 19669 19670 genlmsg_end(msg, hdr); 19671 19672 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 19673 NL80211_MCGRP_MLME, gfp); 19674 return; 19675 19676 nla_put_failure: 19677 nlmsg_free(msg); 19678 } 19679 19680 void nl80211_send_roamed(struct cfg80211_registered_device *rdev, 19681 struct net_device *netdev, 19682 struct cfg80211_roam_info *info, gfp_t gfp) 19683 { 19684 struct sk_buff *msg; 19685 void *hdr; 19686 size_t link_info_size = 0; 19687 unsigned int link; 19688 const u8 *connected_addr = info->ap_mld_addr ? 19689 info->ap_mld_addr : 19690 (info->links[0].bss ? 19691 info->links[0].bss->bssid : 19692 info->links[0].bssid); 19693 19694 if (info->valid_links) { 19695 for_each_valid_link(info, link) { 19696 /* Nested attribute header */ 19697 link_info_size += NLA_HDRLEN; 19698 /* Link ID */ 19699 link_info_size += nla_total_size(sizeof(u8)); 19700 link_info_size += info->links[link].addr ? 19701 nla_total_size(ETH_ALEN) : 0; 19702 link_info_size += (info->links[link].bssid || 19703 info->links[link].bss) ? 19704 nla_total_size(ETH_ALEN) : 0; 19705 } 19706 } 19707 19708 msg = nlmsg_new(100 + info->req_ie_len + info->resp_ie_len + 19709 info->fils.kek_len + info->fils.pmk_len + 19710 (info->fils.pmkid ? WLAN_PMKID_LEN : 0) + 19711 link_info_size, gfp); 19712 if (!msg) 19713 return; 19714 19715 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ROAM); 19716 if (!hdr) { 19717 nlmsg_free(msg); 19718 return; 19719 } 19720 19721 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 19722 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) || 19723 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, connected_addr) || 19724 (info->req_ie && 19725 nla_put(msg, NL80211_ATTR_REQ_IE, info->req_ie_len, 19726 info->req_ie)) || 19727 (info->resp_ie && 19728 nla_put(msg, NL80211_ATTR_RESP_IE, info->resp_ie_len, 19729 info->resp_ie)) || 19730 (info->fils.update_erp_next_seq_num && 19731 nla_put_u16(msg, NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM, 19732 info->fils.erp_next_seq_num)) || 19733 (info->fils.kek && 19734 nla_put(msg, NL80211_ATTR_FILS_KEK, info->fils.kek_len, 19735 info->fils.kek)) || 19736 (info->fils.pmk && 19737 nla_put(msg, NL80211_ATTR_PMK, info->fils.pmk_len, info->fils.pmk)) || 19738 (info->fils.pmkid && 19739 nla_put(msg, NL80211_ATTR_PMKID, WLAN_PMKID_LEN, info->fils.pmkid))) 19740 goto nla_put_failure; 19741 19742 if (info->valid_links) { 19743 int i = 1; 19744 struct nlattr *nested; 19745 19746 nested = nla_nest_start(msg, NL80211_ATTR_MLO_LINKS); 19747 if (!nested) 19748 goto nla_put_failure; 19749 19750 for_each_valid_link(info, link) { 19751 struct nlattr *nested_mlo_links; 19752 const u8 *bssid = info->links[link].bss ? 19753 info->links[link].bss->bssid : 19754 info->links[link].bssid; 19755 19756 nested_mlo_links = nla_nest_start(msg, i); 19757 if (!nested_mlo_links) 19758 goto nla_put_failure; 19759 19760 if (nla_put_u8(msg, NL80211_ATTR_MLO_LINK_ID, link) || 19761 (bssid && 19762 nla_put(msg, NL80211_ATTR_BSSID, ETH_ALEN, bssid)) || 19763 (info->links[link].addr && 19764 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, 19765 info->links[link].addr))) 19766 goto nla_put_failure; 19767 19768 nla_nest_end(msg, nested_mlo_links); 19769 i++; 19770 } 19771 nla_nest_end(msg, nested); 19772 } 19773 19774 genlmsg_end(msg, hdr); 19775 19776 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 19777 NL80211_MCGRP_MLME, gfp); 19778 return; 19779 19780 nla_put_failure: 19781 nlmsg_free(msg); 19782 } 19783 19784 void nl80211_send_port_authorized(struct cfg80211_registered_device *rdev, 19785 struct net_device *netdev, const u8 *peer_addr, 19786 const u8 *td_bitmap, u8 td_bitmap_len) 19787 { 19788 struct sk_buff *msg; 19789 void *hdr; 19790 19791 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 19792 if (!msg) 19793 return; 19794 19795 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PORT_AUTHORIZED); 19796 if (!hdr) { 19797 nlmsg_free(msg); 19798 return; 19799 } 19800 19801 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 19802 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) || 19803 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer_addr)) 19804 goto nla_put_failure; 19805 19806 if (td_bitmap_len > 0 && td_bitmap && 19807 nla_put(msg, NL80211_ATTR_TD_BITMAP, td_bitmap_len, td_bitmap)) 19808 goto nla_put_failure; 19809 19810 genlmsg_end(msg, hdr); 19811 19812 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 19813 NL80211_MCGRP_MLME, GFP_KERNEL); 19814 return; 19815 19816 nla_put_failure: 19817 nlmsg_free(msg); 19818 } 19819 19820 void nl80211_send_disconnected(struct cfg80211_registered_device *rdev, 19821 struct net_device *netdev, u16 reason, 19822 const u8 *ie, size_t ie_len, bool from_ap) 19823 { 19824 struct sk_buff *msg; 19825 void *hdr; 19826 19827 msg = nlmsg_new(100 + ie_len, GFP_KERNEL); 19828 if (!msg) 19829 return; 19830 19831 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DISCONNECT); 19832 if (!hdr) { 19833 nlmsg_free(msg); 19834 return; 19835 } 19836 19837 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 19838 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) || 19839 (reason && 19840 nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason)) || 19841 (from_ap && 19842 nla_put_flag(msg, NL80211_ATTR_DISCONNECTED_BY_AP)) || 19843 (ie && nla_put(msg, NL80211_ATTR_IE, ie_len, ie))) 19844 goto nla_put_failure; 19845 19846 genlmsg_end(msg, hdr); 19847 19848 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 19849 NL80211_MCGRP_MLME, GFP_KERNEL); 19850 return; 19851 19852 nla_put_failure: 19853 nlmsg_free(msg); 19854 } 19855 19856 void cfg80211_links_removed(struct net_device *dev, u16 link_mask) 19857 { 19858 struct wireless_dev *wdev = dev->ieee80211_ptr; 19859 struct wiphy *wiphy = wdev->wiphy; 19860 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 19861 struct sk_buff *msg; 19862 struct nlattr *links; 19863 void *hdr; 19864 19865 lockdep_assert_wiphy(wdev->wiphy); 19866 trace_cfg80211_links_removed(dev, link_mask); 19867 19868 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION && 19869 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)) 19870 return; 19871 19872 if (WARN_ON(!wdev->valid_links || !link_mask || 19873 (wdev->valid_links & link_mask) != link_mask || 19874 wdev->valid_links == link_mask)) 19875 return; 19876 19877 cfg80211_wdev_release_link_bsses(wdev, link_mask); 19878 wdev->valid_links &= ~link_mask; 19879 19880 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 19881 if (!msg) 19882 return; 19883 19884 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_LINKS_REMOVED); 19885 if (!hdr) { 19886 nlmsg_free(msg); 19887 return; 19888 } 19889 19890 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 19891 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex)) 19892 goto nla_put_failure; 19893 19894 links = nla_nest_start(msg, NL80211_ATTR_MLO_LINKS); 19895 if (!links) 19896 goto nla_put_failure; 19897 19898 while (link_mask) { 19899 struct nlattr *link; 19900 int link_id = __ffs(link_mask); 19901 19902 link = nla_nest_start(msg, link_id + 1); 19903 if (!link) 19904 goto nla_put_failure; 19905 19906 if (nla_put_u8(msg, NL80211_ATTR_MLO_LINK_ID, link_id)) 19907 goto nla_put_failure; 19908 19909 nla_nest_end(msg, link); 19910 link_mask &= ~(1 << link_id); 19911 } 19912 19913 nla_nest_end(msg, links); 19914 19915 genlmsg_end(msg, hdr); 19916 19917 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 19918 NL80211_MCGRP_MLME, GFP_KERNEL); 19919 return; 19920 19921 nla_put_failure: 19922 nlmsg_free(msg); 19923 } 19924 EXPORT_SYMBOL(cfg80211_links_removed); 19925 19926 void nl80211_mlo_reconf_add_done(struct net_device *dev, 19927 struct cfg80211_mlo_reconf_done_data *data) 19928 { 19929 struct wireless_dev *wdev = dev->ieee80211_ptr; 19930 struct wiphy *wiphy = wdev->wiphy; 19931 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 19932 struct nl80211_mlme_event event = { 19933 .cmd = NL80211_CMD_ASSOC_MLO_RECONF, 19934 .buf = data->buf, 19935 .buf_len = data->len, 19936 .uapsd_queues = -1, 19937 }; 19938 19939 nl80211_send_mlme_event(rdev, dev, &event, GFP_KERNEL); 19940 } 19941 EXPORT_SYMBOL(nl80211_mlo_reconf_add_done); 19942 19943 void nl80211_send_ibss_bssid(struct cfg80211_registered_device *rdev, 19944 struct net_device *netdev, const u8 *bssid, 19945 gfp_t gfp) 19946 { 19947 struct sk_buff *msg; 19948 void *hdr; 19949 19950 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 19951 if (!msg) 19952 return; 19953 19954 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_JOIN_IBSS); 19955 if (!hdr) { 19956 nlmsg_free(msg); 19957 return; 19958 } 19959 19960 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 19961 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) || 19962 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid)) 19963 goto nla_put_failure; 19964 19965 genlmsg_end(msg, hdr); 19966 19967 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 19968 NL80211_MCGRP_MLME, gfp); 19969 return; 19970 19971 nla_put_failure: 19972 nlmsg_free(msg); 19973 } 19974 19975 void cfg80211_notify_new_peer_candidate(struct net_device *dev, const u8 *addr, 19976 const u8 *ie, u8 ie_len, 19977 int sig_dbm, gfp_t gfp) 19978 { 19979 struct wireless_dev *wdev = dev->ieee80211_ptr; 19980 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 19981 struct sk_buff *msg; 19982 void *hdr; 19983 19984 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_MESH_POINT)) 19985 return; 19986 19987 trace_cfg80211_notify_new_peer_candidate(dev, addr); 19988 19989 msg = nlmsg_new(100 + ie_len, gfp); 19990 if (!msg) 19991 return; 19992 19993 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NEW_PEER_CANDIDATE); 19994 if (!hdr) { 19995 nlmsg_free(msg); 19996 return; 19997 } 19998 19999 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 20000 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) || 20001 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) || 20002 (ie_len && ie && 20003 nla_put(msg, NL80211_ATTR_IE, ie_len, ie)) || 20004 (sig_dbm && 20005 nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm))) 20006 goto nla_put_failure; 20007 20008 genlmsg_end(msg, hdr); 20009 20010 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 20011 NL80211_MCGRP_MLME, gfp); 20012 return; 20013 20014 nla_put_failure: 20015 nlmsg_free(msg); 20016 } 20017 EXPORT_SYMBOL(cfg80211_notify_new_peer_candidate); 20018 20019 void nl80211_michael_mic_failure(struct cfg80211_registered_device *rdev, 20020 struct net_device *netdev, const u8 *addr, 20021 enum nl80211_key_type key_type, int key_id, 20022 const u8 *tsc, gfp_t gfp) 20023 { 20024 struct sk_buff *msg; 20025 void *hdr; 20026 20027 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 20028 if (!msg) 20029 return; 20030 20031 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_MICHAEL_MIC_FAILURE); 20032 if (!hdr) { 20033 nlmsg_free(msg); 20034 return; 20035 } 20036 20037 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 20038 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) || 20039 (addr && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) || 20040 nla_put_u32(msg, NL80211_ATTR_KEY_TYPE, key_type) || 20041 (key_id != -1 && 20042 nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_id)) || 20043 (tsc && nla_put(msg, NL80211_ATTR_KEY_SEQ, 6, tsc))) 20044 goto nla_put_failure; 20045 20046 genlmsg_end(msg, hdr); 20047 20048 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 20049 NL80211_MCGRP_MLME, gfp); 20050 return; 20051 20052 nla_put_failure: 20053 nlmsg_free(msg); 20054 } 20055 20056 void nl80211_send_beacon_hint_event(struct wiphy *wiphy, 20057 struct ieee80211_channel *channel_before, 20058 struct ieee80211_channel *channel_after) 20059 { 20060 struct sk_buff *msg; 20061 void *hdr; 20062 struct nlattr *nl_freq; 20063 20064 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC); 20065 if (!msg) 20066 return; 20067 20068 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_BEACON_HINT); 20069 if (!hdr) { 20070 nlmsg_free(msg); 20071 return; 20072 } 20073 20074 /* 20075 * Since we are applying the beacon hint to a wiphy we know its 20076 * wiphy_idx is valid 20077 */ 20078 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy))) 20079 goto nla_put_failure; 20080 20081 /* Before */ 20082 nl_freq = nla_nest_start_noflag(msg, NL80211_ATTR_FREQ_BEFORE); 20083 if (!nl_freq) 20084 goto nla_put_failure; 20085 20086 if (nl80211_msg_put_channel(msg, wiphy, channel_before, false)) 20087 goto nla_put_failure; 20088 nla_nest_end(msg, nl_freq); 20089 20090 /* After */ 20091 nl_freq = nla_nest_start_noflag(msg, NL80211_ATTR_FREQ_AFTER); 20092 if (!nl_freq) 20093 goto nla_put_failure; 20094 20095 if (nl80211_msg_put_channel(msg, wiphy, channel_after, false)) 20096 goto nla_put_failure; 20097 nla_nest_end(msg, nl_freq); 20098 20099 genlmsg_end(msg, hdr); 20100 20101 genlmsg_multicast_allns(&nl80211_fam, msg, 0, 20102 NL80211_MCGRP_REGULATORY); 20103 20104 return; 20105 20106 nla_put_failure: 20107 nlmsg_free(msg); 20108 } 20109 20110 static void nl80211_send_remain_on_chan_event( 20111 int cmd, struct cfg80211_registered_device *rdev, 20112 struct wireless_dev *wdev, u64 cookie, 20113 struct ieee80211_channel *chan, 20114 unsigned int duration, gfp_t gfp) 20115 { 20116 struct sk_buff *msg; 20117 void *hdr; 20118 20119 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 20120 if (!msg) 20121 return; 20122 20123 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd); 20124 if (!hdr) { 20125 nlmsg_free(msg); 20126 return; 20127 } 20128 20129 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 20130 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX, 20131 wdev->netdev->ifindex)) || 20132 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev), 20133 NL80211_ATTR_PAD) || 20134 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, chan->center_freq) || 20135 nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE, 20136 NL80211_CHAN_NO_HT) || 20137 nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie, 20138 NL80211_ATTR_PAD)) 20139 goto nla_put_failure; 20140 20141 if (cmd == NL80211_CMD_REMAIN_ON_CHANNEL && 20142 nla_put_u32(msg, NL80211_ATTR_DURATION, duration)) 20143 goto nla_put_failure; 20144 20145 genlmsg_end(msg, hdr); 20146 20147 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 20148 NL80211_MCGRP_MLME, gfp); 20149 return; 20150 20151 nla_put_failure: 20152 nlmsg_free(msg); 20153 } 20154 20155 void cfg80211_assoc_comeback(struct net_device *netdev, 20156 const u8 *ap_addr, u32 timeout) 20157 { 20158 struct wireless_dev *wdev = netdev->ieee80211_ptr; 20159 struct wiphy *wiphy = wdev->wiphy; 20160 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 20161 struct sk_buff *msg; 20162 void *hdr; 20163 20164 trace_cfg80211_assoc_comeback(wdev, ap_addr, timeout); 20165 20166 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 20167 if (!msg) 20168 return; 20169 20170 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ASSOC_COMEBACK); 20171 if (!hdr) { 20172 nlmsg_free(msg); 20173 return; 20174 } 20175 20176 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 20177 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) || 20178 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, ap_addr) || 20179 nla_put_u32(msg, NL80211_ATTR_TIMEOUT, timeout)) 20180 goto nla_put_failure; 20181 20182 genlmsg_end(msg, hdr); 20183 20184 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 20185 NL80211_MCGRP_MLME, GFP_KERNEL); 20186 return; 20187 20188 nla_put_failure: 20189 nlmsg_free(msg); 20190 } 20191 EXPORT_SYMBOL(cfg80211_assoc_comeback); 20192 20193 void cfg80211_ready_on_channel(struct wireless_dev *wdev, u64 cookie, 20194 struct ieee80211_channel *chan, 20195 unsigned int duration, gfp_t gfp) 20196 { 20197 struct wiphy *wiphy = wdev->wiphy; 20198 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 20199 20200 trace_cfg80211_ready_on_channel(wdev, cookie, chan, duration); 20201 nl80211_send_remain_on_chan_event(NL80211_CMD_REMAIN_ON_CHANNEL, 20202 rdev, wdev, cookie, chan, 20203 duration, gfp); 20204 } 20205 EXPORT_SYMBOL(cfg80211_ready_on_channel); 20206 20207 void cfg80211_remain_on_channel_expired(struct wireless_dev *wdev, u64 cookie, 20208 struct ieee80211_channel *chan, 20209 gfp_t gfp) 20210 { 20211 struct wiphy *wiphy = wdev->wiphy; 20212 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 20213 20214 trace_cfg80211_ready_on_channel_expired(wdev, cookie, chan); 20215 nl80211_send_remain_on_chan_event(NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL, 20216 rdev, wdev, cookie, chan, 0, gfp); 20217 } 20218 EXPORT_SYMBOL(cfg80211_remain_on_channel_expired); 20219 20220 void cfg80211_tx_mgmt_expired(struct wireless_dev *wdev, u64 cookie, 20221 struct ieee80211_channel *chan, 20222 gfp_t gfp) 20223 { 20224 struct wiphy *wiphy = wdev->wiphy; 20225 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 20226 20227 trace_cfg80211_tx_mgmt_expired(wdev, cookie, chan); 20228 nl80211_send_remain_on_chan_event(NL80211_CMD_FRAME_WAIT_CANCEL, 20229 rdev, wdev, cookie, chan, 0, gfp); 20230 } 20231 EXPORT_SYMBOL(cfg80211_tx_mgmt_expired); 20232 20233 void cfg80211_new_sta(struct net_device *dev, const u8 *mac_addr, 20234 struct station_info *sinfo, gfp_t gfp) 20235 { 20236 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy; 20237 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 20238 struct sk_buff *msg; 20239 20240 trace_cfg80211_new_sta(dev, mac_addr, sinfo); 20241 20242 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 20243 if (!msg) 20244 return; 20245 20246 if (nl80211_send_station(msg, NL80211_CMD_NEW_STATION, 0, 0, 0, 20247 rdev, dev, mac_addr, sinfo, false) < 0) { 20248 nlmsg_free(msg); 20249 return; 20250 } 20251 20252 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 20253 NL80211_MCGRP_MLME, gfp); 20254 } 20255 EXPORT_SYMBOL(cfg80211_new_sta); 20256 20257 void cfg80211_del_sta_sinfo(struct net_device *dev, const u8 *mac_addr, 20258 struct station_info *sinfo, gfp_t gfp) 20259 { 20260 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy; 20261 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 20262 struct sk_buff *msg; 20263 struct station_info empty_sinfo = {}; 20264 20265 if (!sinfo) 20266 sinfo = &empty_sinfo; 20267 20268 trace_cfg80211_del_sta(dev, mac_addr); 20269 20270 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 20271 if (!msg) { 20272 cfg80211_sinfo_release_content(sinfo); 20273 return; 20274 } 20275 20276 if (nl80211_send_station(msg, NL80211_CMD_DEL_STATION, 0, 0, 0, 20277 rdev, dev, mac_addr, sinfo, false) < 0) { 20278 nlmsg_free(msg); 20279 return; 20280 } 20281 20282 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 20283 NL80211_MCGRP_MLME, gfp); 20284 } 20285 EXPORT_SYMBOL(cfg80211_del_sta_sinfo); 20286 20287 void cfg80211_conn_failed(struct net_device *dev, const u8 *mac_addr, 20288 enum nl80211_connect_failed_reason reason, 20289 gfp_t gfp) 20290 { 20291 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy; 20292 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 20293 struct sk_buff *msg; 20294 void *hdr; 20295 20296 msg = nlmsg_new(NLMSG_GOODSIZE, gfp); 20297 if (!msg) 20298 return; 20299 20300 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONN_FAILED); 20301 if (!hdr) { 20302 nlmsg_free(msg); 20303 return; 20304 } 20305 20306 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) || 20307 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) || 20308 nla_put_u32(msg, NL80211_ATTR_CONN_FAILED_REASON, reason)) 20309 goto nla_put_failure; 20310 20311 genlmsg_end(msg, hdr); 20312 20313 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 20314 NL80211_MCGRP_MLME, gfp); 20315 return; 20316 20317 nla_put_failure: 20318 nlmsg_free(msg); 20319 } 20320 EXPORT_SYMBOL(cfg80211_conn_failed); 20321 20322 static bool __nl80211_unexpected_frame(struct net_device *dev, u8 cmd, 20323 const u8 *addr, int link_id, gfp_t gfp) 20324 { 20325 struct wireless_dev *wdev = dev->ieee80211_ptr; 20326 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 20327 struct sk_buff *msg; 20328 void *hdr; 20329 u32 nlportid = READ_ONCE(wdev->ap_unexpected_nlportid); 20330 20331 if (!nlportid) 20332 return false; 20333 20334 msg = nlmsg_new(100, gfp); 20335 if (!msg) 20336 return true; 20337 20338 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd); 20339 if (!hdr) { 20340 nlmsg_free(msg); 20341 return true; 20342 } 20343 20344 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 20345 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) || 20346 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) || 20347 (link_id >= 0 && 20348 nla_put_u8(msg, NL80211_ATTR_MLO_LINK_ID, link_id))) 20349 goto nla_put_failure; 20350 20351 genlmsg_end(msg, hdr); 20352 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid); 20353 return true; 20354 20355 nla_put_failure: 20356 nlmsg_free(msg); 20357 return true; 20358 } 20359 20360 bool cfg80211_rx_spurious_frame(struct net_device *dev, const u8 *addr, 20361 int link_id, gfp_t gfp) 20362 { 20363 struct wireless_dev *wdev = dev->ieee80211_ptr; 20364 bool ret; 20365 20366 trace_cfg80211_rx_spurious_frame(dev, addr, link_id); 20367 20368 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP && 20369 wdev->iftype != NL80211_IFTYPE_P2P_GO)) { 20370 trace_cfg80211_return_bool(false); 20371 return false; 20372 } 20373 ret = __nl80211_unexpected_frame(dev, NL80211_CMD_UNEXPECTED_FRAME, 20374 addr, link_id, gfp); 20375 trace_cfg80211_return_bool(ret); 20376 return ret; 20377 } 20378 EXPORT_SYMBOL(cfg80211_rx_spurious_frame); 20379 20380 bool cfg80211_rx_unexpected_4addr_frame(struct net_device *dev, const u8 *addr, 20381 int link_id, gfp_t gfp) 20382 { 20383 struct wireless_dev *wdev = dev->ieee80211_ptr; 20384 bool ret; 20385 20386 trace_cfg80211_rx_unexpected_4addr_frame(dev, addr, link_id); 20387 20388 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP && 20389 wdev->iftype != NL80211_IFTYPE_P2P_GO && 20390 wdev->iftype != NL80211_IFTYPE_AP_VLAN)) { 20391 trace_cfg80211_return_bool(false); 20392 return false; 20393 } 20394 ret = __nl80211_unexpected_frame(dev, 20395 NL80211_CMD_UNEXPECTED_4ADDR_FRAME, 20396 addr, link_id, gfp); 20397 trace_cfg80211_return_bool(ret); 20398 return ret; 20399 } 20400 EXPORT_SYMBOL(cfg80211_rx_unexpected_4addr_frame); 20401 20402 int nl80211_send_mgmt(struct cfg80211_registered_device *rdev, 20403 struct wireless_dev *wdev, u32 nlportid, 20404 struct cfg80211_rx_info *info, gfp_t gfp) 20405 { 20406 struct net_device *netdev = wdev->netdev; 20407 struct sk_buff *msg; 20408 void *hdr; 20409 20410 msg = nlmsg_new(100 + info->len, gfp); 20411 if (!msg) 20412 return -ENOMEM; 20413 20414 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME); 20415 if (!hdr) { 20416 nlmsg_free(msg); 20417 return -ENOMEM; 20418 } 20419 20420 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 20421 (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX, 20422 netdev->ifindex)) || 20423 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev), 20424 NL80211_ATTR_PAD) || 20425 (info->have_link_id && 20426 nla_put_u8(msg, NL80211_ATTR_MLO_LINK_ID, info->link_id)) || 20427 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, KHZ_TO_MHZ(info->freq)) || 20428 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ_OFFSET, info->freq % 1000) || 20429 (info->sig_dbm && 20430 nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, info->sig_dbm)) || 20431 nla_put(msg, NL80211_ATTR_FRAME, info->len, info->buf) || 20432 (info->flags && 20433 nla_put_u32(msg, NL80211_ATTR_RXMGMT_FLAGS, info->flags)) || 20434 (info->rx_tstamp && nla_put_u64_64bit(msg, 20435 NL80211_ATTR_RX_HW_TIMESTAMP, 20436 info->rx_tstamp, 20437 NL80211_ATTR_PAD)) || 20438 (info->ack_tstamp && nla_put_u64_64bit(msg, 20439 NL80211_ATTR_TX_HW_TIMESTAMP, 20440 info->ack_tstamp, 20441 NL80211_ATTR_PAD))) 20442 goto nla_put_failure; 20443 20444 genlmsg_end(msg, hdr); 20445 20446 return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid); 20447 20448 nla_put_failure: 20449 nlmsg_free(msg); 20450 return -ENOBUFS; 20451 } 20452 20453 static void nl80211_frame_tx_status(struct wireless_dev *wdev, 20454 struct cfg80211_tx_status *status, 20455 gfp_t gfp, enum nl80211_commands command) 20456 { 20457 struct wiphy *wiphy = wdev->wiphy; 20458 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 20459 struct net_device *netdev = wdev->netdev; 20460 struct sk_buff *msg; 20461 void *hdr; 20462 20463 if (command == NL80211_CMD_FRAME_TX_STATUS) 20464 trace_cfg80211_mgmt_tx_status(wdev, status->cookie, 20465 status->ack); 20466 else 20467 trace_cfg80211_control_port_tx_status(wdev, status->cookie, 20468 status->ack); 20469 20470 msg = nlmsg_new(100 + status->len, gfp); 20471 if (!msg) 20472 return; 20473 20474 hdr = nl80211hdr_put(msg, 0, 0, 0, command); 20475 if (!hdr) { 20476 nlmsg_free(msg); 20477 return; 20478 } 20479 20480 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 20481 (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX, 20482 netdev->ifindex)) || 20483 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev), 20484 NL80211_ATTR_PAD) || 20485 nla_put(msg, NL80211_ATTR_FRAME, status->len, status->buf) || 20486 nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, status->cookie, 20487 NL80211_ATTR_PAD) || 20488 (status->ack && nla_put_flag(msg, NL80211_ATTR_ACK)) || 20489 (status->tx_tstamp && 20490 nla_put_u64_64bit(msg, NL80211_ATTR_TX_HW_TIMESTAMP, 20491 status->tx_tstamp, NL80211_ATTR_PAD)) || 20492 (status->ack_tstamp && 20493 nla_put_u64_64bit(msg, NL80211_ATTR_RX_HW_TIMESTAMP, 20494 status->ack_tstamp, NL80211_ATTR_PAD))) 20495 goto nla_put_failure; 20496 20497 genlmsg_end(msg, hdr); 20498 20499 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 20500 NL80211_MCGRP_MLME, gfp); 20501 return; 20502 20503 nla_put_failure: 20504 nlmsg_free(msg); 20505 } 20506 20507 void cfg80211_control_port_tx_status(struct wireless_dev *wdev, u64 cookie, 20508 const u8 *buf, size_t len, bool ack, 20509 gfp_t gfp) 20510 { 20511 struct cfg80211_tx_status status = { 20512 .cookie = cookie, 20513 .buf = buf, 20514 .len = len, 20515 .ack = ack 20516 }; 20517 20518 nl80211_frame_tx_status(wdev, &status, gfp, 20519 NL80211_CMD_CONTROL_PORT_FRAME_TX_STATUS); 20520 } 20521 EXPORT_SYMBOL(cfg80211_control_port_tx_status); 20522 20523 void cfg80211_mgmt_tx_status_ext(struct wireless_dev *wdev, 20524 struct cfg80211_tx_status *status, gfp_t gfp) 20525 { 20526 nl80211_frame_tx_status(wdev, status, gfp, NL80211_CMD_FRAME_TX_STATUS); 20527 } 20528 EXPORT_SYMBOL(cfg80211_mgmt_tx_status_ext); 20529 20530 static int __nl80211_rx_control_port(struct net_device *dev, 20531 struct sk_buff *skb, 20532 bool unencrypted, 20533 int link_id, 20534 gfp_t gfp) 20535 { 20536 struct wireless_dev *wdev = dev->ieee80211_ptr; 20537 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 20538 struct ethhdr *ehdr = eth_hdr(skb); 20539 const u8 *addr = ehdr->h_source; 20540 u16 proto = be16_to_cpu(skb->protocol); 20541 struct sk_buff *msg; 20542 void *hdr; 20543 struct nlattr *frame; 20544 20545 u32 nlportid = READ_ONCE(wdev->conn_owner_nlportid); 20546 20547 if (!nlportid) 20548 return -ENOENT; 20549 20550 msg = nlmsg_new(100 + skb->len, gfp); 20551 if (!msg) 20552 return -ENOMEM; 20553 20554 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONTROL_PORT_FRAME); 20555 if (!hdr) { 20556 nlmsg_free(msg); 20557 return -ENOBUFS; 20558 } 20559 20560 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 20561 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) || 20562 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev), 20563 NL80211_ATTR_PAD) || 20564 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) || 20565 nla_put_u16(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE, proto) || 20566 (link_id >= 0 && 20567 nla_put_u8(msg, NL80211_ATTR_MLO_LINK_ID, link_id)) || 20568 (unencrypted && nla_put_flag(msg, 20569 NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT))) 20570 goto nla_put_failure; 20571 20572 frame = nla_reserve(msg, NL80211_ATTR_FRAME, skb->len); 20573 if (!frame) 20574 goto nla_put_failure; 20575 20576 skb_copy_bits(skb, 0, nla_data(frame), skb->len); 20577 genlmsg_end(msg, hdr); 20578 20579 return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid); 20580 20581 nla_put_failure: 20582 nlmsg_free(msg); 20583 return -ENOBUFS; 20584 } 20585 20586 bool cfg80211_rx_control_port(struct net_device *dev, struct sk_buff *skb, 20587 bool unencrypted, int link_id) 20588 { 20589 int ret; 20590 20591 trace_cfg80211_rx_control_port(dev, skb, unencrypted, link_id); 20592 ret = __nl80211_rx_control_port(dev, skb, unencrypted, link_id, 20593 GFP_ATOMIC); 20594 trace_cfg80211_return_bool(ret == 0); 20595 return ret == 0; 20596 } 20597 EXPORT_SYMBOL(cfg80211_rx_control_port); 20598 20599 static struct sk_buff *cfg80211_prepare_cqm(struct net_device *dev, 20600 const char *mac, gfp_t gfp) 20601 { 20602 struct wireless_dev *wdev = dev->ieee80211_ptr; 20603 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 20604 struct sk_buff *msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 20605 void **cb; 20606 20607 if (!msg) 20608 return NULL; 20609 20610 cb = (void **)msg->cb; 20611 20612 cb[0] = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM); 20613 if (!cb[0]) { 20614 nlmsg_free(msg); 20615 return NULL; 20616 } 20617 20618 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 20619 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex)) 20620 goto nla_put_failure; 20621 20622 if (mac && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac)) 20623 goto nla_put_failure; 20624 20625 cb[1] = nla_nest_start_noflag(msg, NL80211_ATTR_CQM); 20626 if (!cb[1]) 20627 goto nla_put_failure; 20628 20629 cb[2] = rdev; 20630 20631 return msg; 20632 nla_put_failure: 20633 nlmsg_free(msg); 20634 return NULL; 20635 } 20636 20637 static void cfg80211_send_cqm(struct sk_buff *msg, gfp_t gfp) 20638 { 20639 void **cb = (void **)msg->cb; 20640 struct cfg80211_registered_device *rdev = cb[2]; 20641 20642 nla_nest_end(msg, cb[1]); 20643 genlmsg_end(msg, cb[0]); 20644 20645 memset(msg->cb, 0, sizeof(msg->cb)); 20646 20647 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 20648 NL80211_MCGRP_MLME, gfp); 20649 } 20650 20651 void cfg80211_cqm_rssi_notify(struct net_device *dev, 20652 enum nl80211_cqm_rssi_threshold_event rssi_event, 20653 s32 rssi_level, gfp_t gfp) 20654 { 20655 struct wireless_dev *wdev = dev->ieee80211_ptr; 20656 struct cfg80211_cqm_config *cqm_config; 20657 20658 trace_cfg80211_cqm_rssi_notify(dev, rssi_event, rssi_level); 20659 20660 if (WARN_ON(rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW && 20661 rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH)) 20662 return; 20663 20664 rcu_read_lock(); 20665 cqm_config = rcu_dereference(wdev->cqm_config); 20666 if (cqm_config) { 20667 cqm_config->last_rssi_event_value = rssi_level; 20668 cqm_config->last_rssi_event_type = rssi_event; 20669 wiphy_work_queue(wdev->wiphy, &wdev->cqm_rssi_work); 20670 } 20671 rcu_read_unlock(); 20672 } 20673 EXPORT_SYMBOL(cfg80211_cqm_rssi_notify); 20674 20675 void cfg80211_cqm_rssi_notify_work(struct wiphy *wiphy, struct wiphy_work *work) 20676 { 20677 struct wireless_dev *wdev = container_of(work, struct wireless_dev, 20678 cqm_rssi_work); 20679 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 20680 enum nl80211_cqm_rssi_threshold_event rssi_event; 20681 struct cfg80211_cqm_config *cqm_config; 20682 struct sk_buff *msg; 20683 s32 rssi_level; 20684 20685 cqm_config = wiphy_dereference(wdev->wiphy, wdev->cqm_config); 20686 if (!cqm_config) 20687 return; 20688 20689 if (cqm_config->use_range_api) 20690 cfg80211_cqm_rssi_update(rdev, wdev->netdev, cqm_config); 20691 20692 rssi_level = cqm_config->last_rssi_event_value; 20693 rssi_event = cqm_config->last_rssi_event_type; 20694 20695 msg = cfg80211_prepare_cqm(wdev->netdev, NULL, GFP_KERNEL); 20696 if (!msg) 20697 return; 20698 20699 if (nla_put_u32(msg, NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT, 20700 rssi_event)) 20701 goto nla_put_failure; 20702 20703 if (rssi_level && nla_put_s32(msg, NL80211_ATTR_CQM_RSSI_LEVEL, 20704 rssi_level)) 20705 goto nla_put_failure; 20706 20707 cfg80211_send_cqm(msg, GFP_KERNEL); 20708 20709 return; 20710 20711 nla_put_failure: 20712 nlmsg_free(msg); 20713 } 20714 20715 void cfg80211_cqm_txe_notify(struct net_device *dev, 20716 const u8 *peer, u32 num_packets, 20717 u32 rate, u32 intvl, gfp_t gfp) 20718 { 20719 struct sk_buff *msg; 20720 20721 msg = cfg80211_prepare_cqm(dev, peer, gfp); 20722 if (!msg) 20723 return; 20724 20725 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_PKTS, num_packets)) 20726 goto nla_put_failure; 20727 20728 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_RATE, rate)) 20729 goto nla_put_failure; 20730 20731 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_INTVL, intvl)) 20732 goto nla_put_failure; 20733 20734 cfg80211_send_cqm(msg, gfp); 20735 return; 20736 20737 nla_put_failure: 20738 nlmsg_free(msg); 20739 } 20740 EXPORT_SYMBOL(cfg80211_cqm_txe_notify); 20741 20742 void cfg80211_cqm_pktloss_notify(struct net_device *dev, 20743 const u8 *peer, u32 num_packets, gfp_t gfp) 20744 { 20745 struct sk_buff *msg; 20746 20747 trace_cfg80211_cqm_pktloss_notify(dev, peer, num_packets); 20748 20749 msg = cfg80211_prepare_cqm(dev, peer, gfp); 20750 if (!msg) 20751 return; 20752 20753 if (nla_put_u32(msg, NL80211_ATTR_CQM_PKT_LOSS_EVENT, num_packets)) 20754 goto nla_put_failure; 20755 20756 cfg80211_send_cqm(msg, gfp); 20757 return; 20758 20759 nla_put_failure: 20760 nlmsg_free(msg); 20761 } 20762 EXPORT_SYMBOL(cfg80211_cqm_pktloss_notify); 20763 20764 void cfg80211_cqm_beacon_loss_notify(struct net_device *dev, gfp_t gfp) 20765 { 20766 struct sk_buff *msg; 20767 20768 msg = cfg80211_prepare_cqm(dev, NULL, gfp); 20769 if (!msg) 20770 return; 20771 20772 if (nla_put_flag(msg, NL80211_ATTR_CQM_BEACON_LOSS_EVENT)) 20773 goto nla_put_failure; 20774 20775 cfg80211_send_cqm(msg, gfp); 20776 return; 20777 20778 nla_put_failure: 20779 nlmsg_free(msg); 20780 } 20781 EXPORT_SYMBOL(cfg80211_cqm_beacon_loss_notify); 20782 20783 static void nl80211_gtk_rekey_notify(struct cfg80211_registered_device *rdev, 20784 struct net_device *netdev, const u8 *bssid, 20785 const u8 *replay_ctr, gfp_t gfp) 20786 { 20787 struct sk_buff *msg; 20788 struct nlattr *rekey_attr; 20789 void *hdr; 20790 20791 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 20792 if (!msg) 20793 return; 20794 20795 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_REKEY_OFFLOAD); 20796 if (!hdr) { 20797 nlmsg_free(msg); 20798 return; 20799 } 20800 20801 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 20802 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) || 20803 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid)) 20804 goto nla_put_failure; 20805 20806 rekey_attr = nla_nest_start_noflag(msg, NL80211_ATTR_REKEY_DATA); 20807 if (!rekey_attr) 20808 goto nla_put_failure; 20809 20810 if (nla_put(msg, NL80211_REKEY_DATA_REPLAY_CTR, 20811 NL80211_REPLAY_CTR_LEN, replay_ctr)) 20812 goto nla_put_failure; 20813 20814 nla_nest_end(msg, rekey_attr); 20815 20816 genlmsg_end(msg, hdr); 20817 20818 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 20819 NL80211_MCGRP_MLME, gfp); 20820 return; 20821 20822 nla_put_failure: 20823 nlmsg_free(msg); 20824 } 20825 20826 void cfg80211_gtk_rekey_notify(struct net_device *dev, const u8 *bssid, 20827 const u8 *replay_ctr, gfp_t gfp) 20828 { 20829 struct wireless_dev *wdev = dev->ieee80211_ptr; 20830 struct wiphy *wiphy = wdev->wiphy; 20831 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 20832 20833 trace_cfg80211_gtk_rekey_notify(dev, bssid); 20834 nl80211_gtk_rekey_notify(rdev, dev, bssid, replay_ctr, gfp); 20835 } 20836 EXPORT_SYMBOL(cfg80211_gtk_rekey_notify); 20837 20838 static void 20839 nl80211_pmksa_candidate_notify(struct cfg80211_registered_device *rdev, 20840 struct net_device *netdev, int index, 20841 const u8 *bssid, bool preauth, gfp_t gfp) 20842 { 20843 struct sk_buff *msg; 20844 struct nlattr *attr; 20845 void *hdr; 20846 20847 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 20848 if (!msg) 20849 return; 20850 20851 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PMKSA_CANDIDATE); 20852 if (!hdr) { 20853 nlmsg_free(msg); 20854 return; 20855 } 20856 20857 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 20858 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex)) 20859 goto nla_put_failure; 20860 20861 attr = nla_nest_start_noflag(msg, NL80211_ATTR_PMKSA_CANDIDATE); 20862 if (!attr) 20863 goto nla_put_failure; 20864 20865 if (nla_put_u32(msg, NL80211_PMKSA_CANDIDATE_INDEX, index) || 20866 nla_put(msg, NL80211_PMKSA_CANDIDATE_BSSID, ETH_ALEN, bssid) || 20867 (preauth && 20868 nla_put_flag(msg, NL80211_PMKSA_CANDIDATE_PREAUTH))) 20869 goto nla_put_failure; 20870 20871 nla_nest_end(msg, attr); 20872 20873 genlmsg_end(msg, hdr); 20874 20875 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 20876 NL80211_MCGRP_MLME, gfp); 20877 return; 20878 20879 nla_put_failure: 20880 nlmsg_free(msg); 20881 } 20882 20883 void cfg80211_pmksa_candidate_notify(struct net_device *dev, int index, 20884 const u8 *bssid, bool preauth, gfp_t gfp) 20885 { 20886 struct wireless_dev *wdev = dev->ieee80211_ptr; 20887 struct wiphy *wiphy = wdev->wiphy; 20888 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 20889 20890 trace_cfg80211_pmksa_candidate_notify(dev, index, bssid, preauth); 20891 nl80211_pmksa_candidate_notify(rdev, dev, index, bssid, preauth, gfp); 20892 } 20893 EXPORT_SYMBOL(cfg80211_pmksa_candidate_notify); 20894 20895 static void nl80211_ch_switch_notify(struct cfg80211_registered_device *rdev, 20896 struct net_device *netdev, 20897 unsigned int link_id, 20898 struct cfg80211_chan_def *chandef, 20899 gfp_t gfp, 20900 enum nl80211_commands notif, 20901 u8 count, bool quiet) 20902 { 20903 struct wireless_dev *wdev = netdev->ieee80211_ptr; 20904 struct sk_buff *msg; 20905 void *hdr; 20906 20907 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 20908 if (!msg) 20909 return; 20910 20911 hdr = nl80211hdr_put(msg, 0, 0, 0, notif); 20912 if (!hdr) { 20913 nlmsg_free(msg); 20914 return; 20915 } 20916 20917 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex)) 20918 goto nla_put_failure; 20919 20920 if (wdev->valid_links && 20921 nla_put_u8(msg, NL80211_ATTR_MLO_LINK_ID, link_id)) 20922 goto nla_put_failure; 20923 20924 if (nl80211_send_chandef(msg, chandef)) 20925 goto nla_put_failure; 20926 20927 if (notif == NL80211_CMD_CH_SWITCH_STARTED_NOTIFY) { 20928 if (nla_put_u32(msg, NL80211_ATTR_CH_SWITCH_COUNT, count)) 20929 goto nla_put_failure; 20930 if (quiet && 20931 nla_put_flag(msg, NL80211_ATTR_CH_SWITCH_BLOCK_TX)) 20932 goto nla_put_failure; 20933 } 20934 20935 genlmsg_end(msg, hdr); 20936 20937 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 20938 NL80211_MCGRP_MLME, gfp); 20939 return; 20940 20941 nla_put_failure: 20942 nlmsg_free(msg); 20943 } 20944 20945 void cfg80211_ch_switch_notify(struct net_device *dev, 20946 struct cfg80211_chan_def *chandef, 20947 unsigned int link_id) 20948 { 20949 struct wireless_dev *wdev = dev->ieee80211_ptr; 20950 struct wiphy *wiphy = wdev->wiphy; 20951 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 20952 20953 lockdep_assert_wiphy(wdev->wiphy); 20954 WARN_INVALID_LINK_ID(wdev, link_id); 20955 20956 trace_cfg80211_ch_switch_notify(dev, chandef, link_id); 20957 20958 switch (wdev->iftype) { 20959 case NL80211_IFTYPE_STATION: 20960 case NL80211_IFTYPE_P2P_CLIENT: 20961 if (!WARN_ON(!wdev->links[link_id].client.current_bss)) 20962 cfg80211_update_assoc_bss_entry(wdev, link_id, 20963 chandef->chan); 20964 break; 20965 case NL80211_IFTYPE_MESH_POINT: 20966 wdev->u.mesh.chandef = *chandef; 20967 wdev->u.mesh.preset_chandef = *chandef; 20968 break; 20969 case NL80211_IFTYPE_AP: 20970 case NL80211_IFTYPE_P2P_GO: 20971 wdev->links[link_id].ap.chandef = *chandef; 20972 break; 20973 case NL80211_IFTYPE_ADHOC: 20974 wdev->u.ibss.chandef = *chandef; 20975 break; 20976 default: 20977 WARN_ON(1); 20978 break; 20979 } 20980 20981 cfg80211_schedule_channels_check(wdev); 20982 cfg80211_sched_dfs_chan_update(rdev); 20983 20984 nl80211_ch_switch_notify(rdev, dev, link_id, chandef, GFP_KERNEL, 20985 NL80211_CMD_CH_SWITCH_NOTIFY, 0, false); 20986 } 20987 EXPORT_SYMBOL(cfg80211_ch_switch_notify); 20988 20989 void cfg80211_ch_switch_started_notify(struct net_device *dev, 20990 struct cfg80211_chan_def *chandef, 20991 unsigned int link_id, u8 count, 20992 bool quiet) 20993 { 20994 struct wireless_dev *wdev = dev->ieee80211_ptr; 20995 struct wiphy *wiphy = wdev->wiphy; 20996 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 20997 20998 lockdep_assert_wiphy(wdev->wiphy); 20999 WARN_INVALID_LINK_ID(wdev, link_id); 21000 21001 trace_cfg80211_ch_switch_started_notify(dev, chandef, link_id); 21002 21003 21004 nl80211_ch_switch_notify(rdev, dev, link_id, chandef, GFP_KERNEL, 21005 NL80211_CMD_CH_SWITCH_STARTED_NOTIFY, 21006 count, quiet); 21007 } 21008 EXPORT_SYMBOL(cfg80211_ch_switch_started_notify); 21009 21010 int cfg80211_bss_color_notify(struct net_device *dev, 21011 enum nl80211_commands cmd, u8 count, 21012 u64 color_bitmap, u8 link_id) 21013 { 21014 struct wireless_dev *wdev = dev->ieee80211_ptr; 21015 struct wiphy *wiphy = wdev->wiphy; 21016 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 21017 struct sk_buff *msg; 21018 void *hdr; 21019 21020 lockdep_assert_wiphy(wdev->wiphy); 21021 21022 trace_cfg80211_bss_color_notify(dev, cmd, count, color_bitmap); 21023 21024 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 21025 if (!msg) 21026 return -ENOMEM; 21027 21028 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd); 21029 if (!hdr) 21030 goto nla_put_failure; 21031 21032 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex)) 21033 goto nla_put_failure; 21034 21035 if (wdev->valid_links && 21036 nla_put_u8(msg, NL80211_ATTR_MLO_LINK_ID, link_id)) 21037 goto nla_put_failure; 21038 21039 if (cmd == NL80211_CMD_COLOR_CHANGE_STARTED && 21040 nla_put_u32(msg, NL80211_ATTR_COLOR_CHANGE_COUNT, count)) 21041 goto nla_put_failure; 21042 21043 if (cmd == NL80211_CMD_OBSS_COLOR_COLLISION && 21044 nla_put_u64_64bit(msg, NL80211_ATTR_OBSS_COLOR_BITMAP, 21045 color_bitmap, NL80211_ATTR_PAD)) 21046 goto nla_put_failure; 21047 21048 genlmsg_end(msg, hdr); 21049 21050 return genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), 21051 msg, 0, NL80211_MCGRP_MLME, GFP_KERNEL); 21052 21053 nla_put_failure: 21054 nlmsg_free(msg); 21055 return -EINVAL; 21056 } 21057 EXPORT_SYMBOL(cfg80211_bss_color_notify); 21058 21059 void 21060 nl80211_radar_notify(struct cfg80211_registered_device *rdev, 21061 const struct cfg80211_chan_def *chandef, 21062 enum nl80211_radar_event event, 21063 struct net_device *netdev, gfp_t gfp) 21064 { 21065 struct sk_buff *msg; 21066 void *hdr; 21067 21068 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 21069 if (!msg) 21070 return; 21071 21072 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_RADAR_DETECT); 21073 if (!hdr) { 21074 nlmsg_free(msg); 21075 return; 21076 } 21077 21078 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx)) 21079 goto nla_put_failure; 21080 21081 /* NOP and radar events don't need a netdev parameter */ 21082 if (netdev) { 21083 struct wireless_dev *wdev = netdev->ieee80211_ptr; 21084 21085 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) || 21086 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev), 21087 NL80211_ATTR_PAD)) 21088 goto nla_put_failure; 21089 } 21090 21091 if (nla_put_u32(msg, NL80211_ATTR_RADAR_EVENT, event)) 21092 goto nla_put_failure; 21093 21094 if (nl80211_send_chandef(msg, chandef)) 21095 goto nla_put_failure; 21096 21097 genlmsg_end(msg, hdr); 21098 21099 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 21100 NL80211_MCGRP_MLME, gfp); 21101 return; 21102 21103 nla_put_failure: 21104 nlmsg_free(msg); 21105 } 21106 21107 void cfg80211_sta_opmode_change_notify(struct net_device *dev, const u8 *mac, 21108 struct sta_opmode_info *sta_opmode, 21109 gfp_t gfp) 21110 { 21111 struct sk_buff *msg; 21112 struct wireless_dev *wdev = dev->ieee80211_ptr; 21113 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 21114 void *hdr; 21115 21116 if (WARN_ON(!mac)) 21117 return; 21118 21119 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 21120 if (!msg) 21121 return; 21122 21123 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_STA_OPMODE_CHANGED); 21124 if (!hdr) { 21125 nlmsg_free(msg); 21126 return; 21127 } 21128 21129 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx)) 21130 goto nla_put_failure; 21131 21132 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex)) 21133 goto nla_put_failure; 21134 21135 if (nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac)) 21136 goto nla_put_failure; 21137 21138 if ((sta_opmode->changed & STA_OPMODE_SMPS_MODE_CHANGED) && 21139 nla_put_u8(msg, NL80211_ATTR_SMPS_MODE, sta_opmode->smps_mode)) 21140 goto nla_put_failure; 21141 21142 if ((sta_opmode->changed & STA_OPMODE_MAX_BW_CHANGED) && 21143 nla_put_u32(msg, NL80211_ATTR_CHANNEL_WIDTH, sta_opmode->bw)) 21144 goto nla_put_failure; 21145 21146 if ((sta_opmode->changed & STA_OPMODE_N_SS_CHANGED) && 21147 nla_put_u8(msg, NL80211_ATTR_NSS, sta_opmode->rx_nss)) 21148 goto nla_put_failure; 21149 21150 genlmsg_end(msg, hdr); 21151 21152 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 21153 NL80211_MCGRP_MLME, gfp); 21154 21155 return; 21156 21157 nla_put_failure: 21158 nlmsg_free(msg); 21159 } 21160 EXPORT_SYMBOL(cfg80211_sta_opmode_change_notify); 21161 21162 void cfg80211_probe_status(struct net_device *dev, const u8 *addr, 21163 u64 cookie, bool acked, s32 ack_signal, 21164 bool is_valid_ack_signal, gfp_t gfp) 21165 { 21166 struct wireless_dev *wdev = dev->ieee80211_ptr; 21167 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 21168 struct sk_buff *msg; 21169 void *hdr; 21170 21171 trace_cfg80211_probe_status(dev, addr, cookie, acked); 21172 21173 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 21174 21175 if (!msg) 21176 return; 21177 21178 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PROBE_CLIENT); 21179 if (!hdr) { 21180 nlmsg_free(msg); 21181 return; 21182 } 21183 21184 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 21185 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) || 21186 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) || 21187 nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie, 21188 NL80211_ATTR_PAD) || 21189 (acked && nla_put_flag(msg, NL80211_ATTR_ACK)) || 21190 (is_valid_ack_signal && nla_put_s32(msg, NL80211_ATTR_ACK_SIGNAL, 21191 ack_signal))) 21192 goto nla_put_failure; 21193 21194 genlmsg_end(msg, hdr); 21195 21196 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 21197 NL80211_MCGRP_MLME, gfp); 21198 return; 21199 21200 nla_put_failure: 21201 nlmsg_free(msg); 21202 } 21203 EXPORT_SYMBOL(cfg80211_probe_status); 21204 21205 void cfg80211_report_obss_beacon_khz(struct wiphy *wiphy, const u8 *frame, 21206 size_t len, int freq, int sig_dbm) 21207 { 21208 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 21209 struct sk_buff *msg; 21210 void *hdr; 21211 struct cfg80211_beacon_registration *reg; 21212 21213 trace_cfg80211_report_obss_beacon(wiphy, frame, len, freq, sig_dbm); 21214 21215 spin_lock_bh(&rdev->beacon_registrations_lock); 21216 list_for_each_entry(reg, &rdev->beacon_registrations, list) { 21217 msg = nlmsg_new(len + 100, GFP_ATOMIC); 21218 if (!msg) { 21219 spin_unlock_bh(&rdev->beacon_registrations_lock); 21220 return; 21221 } 21222 21223 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME); 21224 if (!hdr) 21225 goto nla_put_failure; 21226 21227 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 21228 (freq && 21229 (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, 21230 KHZ_TO_MHZ(freq)) || 21231 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ_OFFSET, 21232 freq % 1000))) || 21233 (sig_dbm && 21234 nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) || 21235 nla_put(msg, NL80211_ATTR_FRAME, len, frame)) 21236 goto nla_put_failure; 21237 21238 genlmsg_end(msg, hdr); 21239 21240 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, reg->nlportid); 21241 } 21242 spin_unlock_bh(&rdev->beacon_registrations_lock); 21243 return; 21244 21245 nla_put_failure: 21246 spin_unlock_bh(&rdev->beacon_registrations_lock); 21247 nlmsg_free(msg); 21248 } 21249 EXPORT_SYMBOL(cfg80211_report_obss_beacon_khz); 21250 21251 #ifdef CONFIG_PM 21252 static int cfg80211_net_detect_results(struct sk_buff *msg, 21253 struct cfg80211_wowlan_wakeup *wakeup) 21254 { 21255 struct cfg80211_wowlan_nd_info *nd = wakeup->net_detect; 21256 struct nlattr *nl_results, *nl_match, *nl_freqs; 21257 int i, j; 21258 21259 nl_results = nla_nest_start_noflag(msg, 21260 NL80211_WOWLAN_TRIG_NET_DETECT_RESULTS); 21261 if (!nl_results) 21262 return -EMSGSIZE; 21263 21264 for (i = 0; i < nd->n_matches; i++) { 21265 struct cfg80211_wowlan_nd_match *match = nd->matches[i]; 21266 21267 nl_match = nla_nest_start_noflag(msg, i); 21268 if (!nl_match) 21269 break; 21270 21271 /* The SSID attribute is optional in nl80211, but for 21272 * simplicity reasons it's always present in the 21273 * cfg80211 structure. If a driver can't pass the 21274 * SSID, that needs to be changed. A zero length SSID 21275 * is still a valid SSID (wildcard), so it cannot be 21276 * used for this purpose. 21277 */ 21278 if (nla_put(msg, NL80211_ATTR_SSID, match->ssid.ssid_len, 21279 match->ssid.ssid)) { 21280 nla_nest_cancel(msg, nl_match); 21281 goto out; 21282 } 21283 21284 if (match->n_channels) { 21285 nl_freqs = nla_nest_start_noflag(msg, 21286 NL80211_ATTR_SCAN_FREQUENCIES); 21287 if (!nl_freqs) { 21288 nla_nest_cancel(msg, nl_match); 21289 goto out; 21290 } 21291 21292 for (j = 0; j < match->n_channels; j++) { 21293 if (nla_put_u32(msg, j, match->channels[j])) { 21294 nla_nest_cancel(msg, nl_freqs); 21295 nla_nest_cancel(msg, nl_match); 21296 goto out; 21297 } 21298 } 21299 21300 nla_nest_end(msg, nl_freqs); 21301 } 21302 21303 nla_nest_end(msg, nl_match); 21304 } 21305 21306 out: 21307 nla_nest_end(msg, nl_results); 21308 return 0; 21309 } 21310 21311 void cfg80211_report_wowlan_wakeup(struct wireless_dev *wdev, 21312 struct cfg80211_wowlan_wakeup *wakeup, 21313 gfp_t gfp) 21314 { 21315 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 21316 struct sk_buff *msg; 21317 void *hdr; 21318 int size = 200; 21319 21320 trace_cfg80211_report_wowlan_wakeup(wdev->wiphy, wdev, wakeup); 21321 21322 if (wakeup) 21323 size += wakeup->packet_present_len; 21324 21325 msg = nlmsg_new(size, gfp); 21326 if (!msg) 21327 return; 21328 21329 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_WOWLAN); 21330 if (!hdr) 21331 goto free_msg; 21332 21333 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 21334 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev), 21335 NL80211_ATTR_PAD)) 21336 goto free_msg; 21337 21338 if (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX, 21339 wdev->netdev->ifindex)) 21340 goto free_msg; 21341 21342 if (wakeup) { 21343 struct nlattr *reasons; 21344 21345 reasons = nla_nest_start_noflag(msg, 21346 NL80211_ATTR_WOWLAN_TRIGGERS); 21347 if (!reasons) 21348 goto free_msg; 21349 21350 if (wakeup->disconnect && 21351 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) 21352 goto free_msg; 21353 if (wakeup->magic_pkt && 21354 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) 21355 goto free_msg; 21356 if (wakeup->gtk_rekey_failure && 21357 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) 21358 goto free_msg; 21359 if (wakeup->eap_identity_req && 21360 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) 21361 goto free_msg; 21362 if (wakeup->four_way_handshake && 21363 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) 21364 goto free_msg; 21365 if (wakeup->rfkill_release && 21366 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)) 21367 goto free_msg; 21368 21369 if (wakeup->pattern_idx >= 0 && 21370 nla_put_u32(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN, 21371 wakeup->pattern_idx)) 21372 goto free_msg; 21373 21374 if (wakeup->tcp_match && 21375 nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_MATCH)) 21376 goto free_msg; 21377 21378 if (wakeup->tcp_connlost && 21379 nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_CONNLOST)) 21380 goto free_msg; 21381 21382 if (wakeup->tcp_nomoretokens && 21383 nla_put_flag(msg, 21384 NL80211_WOWLAN_TRIG_WAKEUP_TCP_NOMORETOKENS)) 21385 goto free_msg; 21386 21387 if (wakeup->unprot_deauth_disassoc && 21388 nla_put_flag(msg, 21389 NL80211_WOWLAN_TRIG_UNPROTECTED_DEAUTH_DISASSOC)) 21390 goto free_msg; 21391 21392 if (wakeup->packet) { 21393 u32 pkt_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211; 21394 u32 len_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211_LEN; 21395 21396 if (!wakeup->packet_80211) { 21397 pkt_attr = 21398 NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023; 21399 len_attr = 21400 NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023_LEN; 21401 } 21402 21403 if (wakeup->packet_len && 21404 nla_put_u32(msg, len_attr, wakeup->packet_len)) 21405 goto free_msg; 21406 21407 if (nla_put(msg, pkt_attr, wakeup->packet_present_len, 21408 wakeup->packet)) 21409 goto free_msg; 21410 } 21411 21412 if (wakeup->net_detect && 21413 cfg80211_net_detect_results(msg, wakeup)) 21414 goto free_msg; 21415 21416 nla_nest_end(msg, reasons); 21417 } 21418 21419 genlmsg_end(msg, hdr); 21420 21421 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 21422 NL80211_MCGRP_MLME, gfp); 21423 return; 21424 21425 free_msg: 21426 nlmsg_free(msg); 21427 } 21428 EXPORT_SYMBOL(cfg80211_report_wowlan_wakeup); 21429 #endif 21430 21431 void cfg80211_tdls_oper_request(struct net_device *dev, const u8 *peer, 21432 enum nl80211_tdls_operation oper, 21433 u16 reason_code, gfp_t gfp) 21434 { 21435 struct wireless_dev *wdev = dev->ieee80211_ptr; 21436 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 21437 struct sk_buff *msg; 21438 void *hdr; 21439 21440 trace_cfg80211_tdls_oper_request(wdev->wiphy, dev, peer, oper, 21441 reason_code); 21442 21443 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 21444 if (!msg) 21445 return; 21446 21447 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_TDLS_OPER); 21448 if (!hdr) { 21449 nlmsg_free(msg); 21450 return; 21451 } 21452 21453 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 21454 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) || 21455 nla_put_u8(msg, NL80211_ATTR_TDLS_OPERATION, oper) || 21456 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer) || 21457 (reason_code > 0 && 21458 nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason_code))) 21459 goto nla_put_failure; 21460 21461 genlmsg_end(msg, hdr); 21462 21463 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 21464 NL80211_MCGRP_MLME, gfp); 21465 return; 21466 21467 nla_put_failure: 21468 nlmsg_free(msg); 21469 } 21470 EXPORT_SYMBOL(cfg80211_tdls_oper_request); 21471 21472 static int nl80211_netlink_notify(struct notifier_block * nb, 21473 unsigned long state, 21474 void *_notify) 21475 { 21476 struct netlink_notify *notify = _notify; 21477 struct cfg80211_registered_device *rdev; 21478 struct wireless_dev *wdev; 21479 struct cfg80211_beacon_registration *reg, *tmp; 21480 21481 if (state != NETLINK_URELEASE || notify->protocol != NETLINK_GENERIC) 21482 return NOTIFY_DONE; 21483 21484 rcu_read_lock(); 21485 21486 list_for_each_entry_rcu(rdev, &cfg80211_rdev_list, list) { 21487 struct cfg80211_sched_scan_request *sched_scan_req; 21488 21489 list_for_each_entry_rcu(sched_scan_req, 21490 &rdev->sched_scan_req_list, 21491 list) { 21492 if (sched_scan_req->owner_nlportid == notify->portid) { 21493 sched_scan_req->nl_owner_dead = true; 21494 wiphy_work_queue(&rdev->wiphy, 21495 &rdev->sched_scan_stop_wk); 21496 } 21497 } 21498 21499 list_for_each_entry_rcu(wdev, &rdev->wiphy.wdev_list, list) { 21500 cfg80211_mlme_unregister_socket(wdev, notify->portid); 21501 21502 if (wdev->owner_nlportid == notify->portid) { 21503 wdev->nl_owner_dead = true; 21504 schedule_work(&rdev->destroy_work); 21505 } else if (wdev->conn_owner_nlportid == notify->portid) { 21506 schedule_work(&wdev->disconnect_wk); 21507 } 21508 21509 cfg80211_release_pmsr(wdev, notify->portid); 21510 } 21511 21512 spin_lock_bh(&rdev->beacon_registrations_lock); 21513 list_for_each_entry_safe(reg, tmp, &rdev->beacon_registrations, 21514 list) { 21515 if (reg->nlportid == notify->portid) { 21516 list_del(®->list); 21517 kfree(reg); 21518 break; 21519 } 21520 } 21521 spin_unlock_bh(&rdev->beacon_registrations_lock); 21522 } 21523 21524 rcu_read_unlock(); 21525 21526 /* 21527 * It is possible that the user space process that is controlling the 21528 * indoor setting disappeared, so notify the regulatory core. 21529 */ 21530 regulatory_netlink_notify(notify->portid); 21531 return NOTIFY_OK; 21532 } 21533 21534 static struct notifier_block nl80211_netlink_notifier = { 21535 .notifier_call = nl80211_netlink_notify, 21536 }; 21537 21538 void cfg80211_ft_event(struct net_device *netdev, 21539 struct cfg80211_ft_event_params *ft_event) 21540 { 21541 struct wiphy *wiphy = netdev->ieee80211_ptr->wiphy; 21542 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 21543 struct sk_buff *msg; 21544 void *hdr; 21545 21546 trace_cfg80211_ft_event(wiphy, netdev, ft_event); 21547 21548 if (!ft_event->target_ap) 21549 return; 21550 21551 msg = nlmsg_new(100 + ft_event->ies_len + ft_event->ric_ies_len, 21552 GFP_KERNEL); 21553 if (!msg) 21554 return; 21555 21556 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FT_EVENT); 21557 if (!hdr) 21558 goto out; 21559 21560 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 21561 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) || 21562 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, ft_event->target_ap)) 21563 goto out; 21564 21565 if (ft_event->ies && 21566 nla_put(msg, NL80211_ATTR_IE, ft_event->ies_len, ft_event->ies)) 21567 goto out; 21568 if (ft_event->ric_ies && 21569 nla_put(msg, NL80211_ATTR_IE_RIC, ft_event->ric_ies_len, 21570 ft_event->ric_ies)) 21571 goto out; 21572 21573 genlmsg_end(msg, hdr); 21574 21575 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 21576 NL80211_MCGRP_MLME, GFP_KERNEL); 21577 return; 21578 out: 21579 nlmsg_free(msg); 21580 } 21581 EXPORT_SYMBOL(cfg80211_ft_event); 21582 21583 void cfg80211_crit_proto_stopped(struct wireless_dev *wdev, gfp_t gfp) 21584 { 21585 struct cfg80211_registered_device *rdev; 21586 struct sk_buff *msg; 21587 void *hdr; 21588 u32 nlportid; 21589 21590 rdev = wiphy_to_rdev(wdev->wiphy); 21591 if (!rdev->crit_proto_nlportid) 21592 return; 21593 21594 nlportid = rdev->crit_proto_nlportid; 21595 rdev->crit_proto_nlportid = 0; 21596 21597 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 21598 if (!msg) 21599 return; 21600 21601 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CRIT_PROTOCOL_STOP); 21602 if (!hdr) 21603 goto nla_put_failure; 21604 21605 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 21606 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev), 21607 NL80211_ATTR_PAD)) 21608 goto nla_put_failure; 21609 21610 genlmsg_end(msg, hdr); 21611 21612 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid); 21613 return; 21614 21615 nla_put_failure: 21616 nlmsg_free(msg); 21617 } 21618 EXPORT_SYMBOL(cfg80211_crit_proto_stopped); 21619 21620 void nl80211_send_ap_stopped(struct wireless_dev *wdev, unsigned int link_id) 21621 { 21622 struct wiphy *wiphy = wdev->wiphy; 21623 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 21624 struct sk_buff *msg; 21625 void *hdr; 21626 21627 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 21628 if (!msg) 21629 return; 21630 21631 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_STOP_AP); 21632 if (!hdr) 21633 goto out; 21634 21635 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 21636 nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex) || 21637 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev), 21638 NL80211_ATTR_PAD) || 21639 (wdev->valid_links && 21640 nla_put_u8(msg, NL80211_ATTR_MLO_LINK_ID, link_id))) 21641 goto out; 21642 21643 genlmsg_end(msg, hdr); 21644 21645 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(wiphy), msg, 0, 21646 NL80211_MCGRP_MLME, GFP_KERNEL); 21647 return; 21648 out: 21649 nlmsg_free(msg); 21650 } 21651 21652 int cfg80211_external_auth_request(struct net_device *dev, 21653 struct cfg80211_external_auth_params *params, 21654 gfp_t gfp) 21655 { 21656 struct wireless_dev *wdev = dev->ieee80211_ptr; 21657 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 21658 struct sk_buff *msg; 21659 void *hdr; 21660 21661 if (!wdev->conn_owner_nlportid) 21662 return -EINVAL; 21663 21664 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 21665 if (!msg) 21666 return -ENOMEM; 21667 21668 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_EXTERNAL_AUTH); 21669 if (!hdr) 21670 goto nla_put_failure; 21671 21672 /* Some historical mistakes in drivers <-> userspace interface (notably 21673 * between drivers and wpa_supplicant) led to a big-endian conversion 21674 * being needed on NL80211_ATTR_AKM_SUITES _only_ when its value is 21675 * WLAN_AKM_SUITE_SAE. This is now fixed on userspace side, but for the 21676 * benefit of older wpa_supplicant versions, send this particular value 21677 * in big-endian. Note that newer wpa_supplicant will also detect this 21678 * particular value in big endian still, so it all continues to work. 21679 */ 21680 if (params->key_mgmt_suite == WLAN_AKM_SUITE_SAE) { 21681 if (nla_put_be32(msg, NL80211_ATTR_AKM_SUITES, 21682 cpu_to_be32(WLAN_AKM_SUITE_SAE))) 21683 goto nla_put_failure; 21684 } else { 21685 if (nla_put_u32(msg, NL80211_ATTR_AKM_SUITES, 21686 params->key_mgmt_suite)) 21687 goto nla_put_failure; 21688 } 21689 21690 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 21691 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) || 21692 nla_put_u32(msg, NL80211_ATTR_EXTERNAL_AUTH_ACTION, 21693 params->action) || 21694 nla_put(msg, NL80211_ATTR_BSSID, ETH_ALEN, params->bssid) || 21695 nla_put(msg, NL80211_ATTR_SSID, params->ssid.ssid_len, 21696 params->ssid.ssid) || 21697 (!is_zero_ether_addr(params->mld_addr) && 21698 nla_put(msg, NL80211_ATTR_MLD_ADDR, ETH_ALEN, params->mld_addr))) 21699 goto nla_put_failure; 21700 21701 genlmsg_end(msg, hdr); 21702 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, 21703 wdev->conn_owner_nlportid); 21704 return 0; 21705 21706 nla_put_failure: 21707 nlmsg_free(msg); 21708 return -ENOBUFS; 21709 } 21710 EXPORT_SYMBOL(cfg80211_external_auth_request); 21711 21712 void cfg80211_update_owe_info_event(struct net_device *netdev, 21713 struct cfg80211_update_owe_info *owe_info, 21714 gfp_t gfp) 21715 { 21716 struct wiphy *wiphy = netdev->ieee80211_ptr->wiphy; 21717 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 21718 struct sk_buff *msg; 21719 void *hdr; 21720 21721 trace_cfg80211_update_owe_info_event(wiphy, netdev, owe_info); 21722 21723 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 21724 if (!msg) 21725 return; 21726 21727 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_UPDATE_OWE_INFO); 21728 if (!hdr) 21729 goto nla_put_failure; 21730 21731 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 21732 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) || 21733 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, owe_info->peer)) 21734 goto nla_put_failure; 21735 21736 if (!owe_info->ie_len || 21737 nla_put(msg, NL80211_ATTR_IE, owe_info->ie_len, owe_info->ie)) 21738 goto nla_put_failure; 21739 21740 if (owe_info->assoc_link_id != -1) { 21741 if (nla_put_u8(msg, NL80211_ATTR_MLO_LINK_ID, 21742 owe_info->assoc_link_id)) 21743 goto nla_put_failure; 21744 21745 if (!is_zero_ether_addr(owe_info->peer_mld_addr) && 21746 nla_put(msg, NL80211_ATTR_MLD_ADDR, ETH_ALEN, 21747 owe_info->peer_mld_addr)) 21748 goto nla_put_failure; 21749 } 21750 21751 genlmsg_end(msg, hdr); 21752 21753 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 21754 NL80211_MCGRP_MLME, gfp); 21755 return; 21756 21757 nla_put_failure: 21758 genlmsg_cancel(msg, hdr); 21759 nlmsg_free(msg); 21760 } 21761 EXPORT_SYMBOL(cfg80211_update_owe_info_event); 21762 21763 void cfg80211_schedule_channels_check(struct wireless_dev *wdev) 21764 { 21765 struct wiphy *wiphy = wdev->wiphy; 21766 21767 /* Schedule channels check if NO_IR or DFS relaxations are supported */ 21768 if (wdev->iftype == NL80211_IFTYPE_STATION && 21769 (wiphy_ext_feature_isset(wiphy, 21770 NL80211_EXT_FEATURE_DFS_CONCURRENT) || 21771 (IS_ENABLED(CONFIG_CFG80211_REG_RELAX_NO_IR) && 21772 wiphy->regulatory_flags & REGULATORY_ENABLE_RELAX_NO_IR))) 21773 reg_check_channels(); 21774 } 21775 EXPORT_SYMBOL(cfg80211_schedule_channels_check); 21776 21777 void cfg80211_epcs_changed(struct net_device *netdev, bool enabled) 21778 { 21779 struct wireless_dev *wdev = netdev->ieee80211_ptr; 21780 struct wiphy *wiphy = wdev->wiphy; 21781 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 21782 struct sk_buff *msg; 21783 void *hdr; 21784 21785 trace_cfg80211_epcs_changed(wdev, enabled); 21786 21787 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 21788 if (!msg) 21789 return; 21790 21791 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_EPCS_CFG); 21792 if (!hdr) { 21793 nlmsg_free(msg); 21794 return; 21795 } 21796 21797 if (enabled && nla_put_flag(msg, NL80211_ATTR_EPCS)) 21798 goto nla_put_failure; 21799 21800 genlmsg_end(msg, hdr); 21801 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 21802 NL80211_MCGRP_MLME, GFP_KERNEL); 21803 return; 21804 21805 nla_put_failure: 21806 nlmsg_free(msg); 21807 } 21808 EXPORT_SYMBOL(cfg80211_epcs_changed); 21809 21810 void cfg80211_next_nan_dw_notif(struct wireless_dev *wdev, 21811 struct ieee80211_channel *chan, gfp_t gfp) 21812 { 21813 struct wiphy *wiphy = wdev->wiphy; 21814 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 21815 struct sk_buff *msg; 21816 void *hdr; 21817 21818 trace_cfg80211_next_nan_dw_notif(wdev, chan); 21819 21820 if (!wdev->owner_nlportid) 21821 return; 21822 21823 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 21824 if (!msg) 21825 return; 21826 21827 hdr = nl80211hdr_put(msg, 0, 0, 0, 21828 NL80211_CMD_NAN_NEXT_DW_NOTIFICATION); 21829 if (!hdr) 21830 goto nla_put_failure; 21831 21832 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 21833 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev), 21834 NL80211_ATTR_PAD) || 21835 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, chan->center_freq)) 21836 goto nla_put_failure; 21837 21838 genlmsg_end(msg, hdr); 21839 21840 genlmsg_unicast(wiphy_net(wiphy), msg, wdev->owner_nlportid); 21841 21842 return; 21843 21844 nla_put_failure: 21845 nlmsg_free(msg); 21846 } 21847 EXPORT_SYMBOL(cfg80211_next_nan_dw_notif); 21848 21849 void cfg80211_nan_cluster_joined(struct wireless_dev *wdev, 21850 const u8 *cluster_id, bool new_cluster, 21851 gfp_t gfp) 21852 { 21853 struct wiphy *wiphy = wdev->wiphy; 21854 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 21855 struct sk_buff *msg; 21856 void *hdr; 21857 21858 trace_cfg80211_nan_cluster_joined(wdev, cluster_id, new_cluster); 21859 21860 memcpy(wdev->u.nan.cluster_id, cluster_id, ETH_ALEN); 21861 21862 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 21863 if (!msg) 21864 return; 21865 21866 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NAN_CLUSTER_JOINED); 21867 if (!hdr) 21868 goto nla_put_failure; 21869 21870 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 21871 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev), 21872 NL80211_ATTR_PAD) || 21873 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, cluster_id) || 21874 (new_cluster && nla_put_flag(msg, NL80211_ATTR_NAN_NEW_CLUSTER))) 21875 goto nla_put_failure; 21876 21877 genlmsg_end(msg, hdr); 21878 21879 if (!wdev->owner_nlportid) 21880 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(wiphy), 21881 msg, 0, NL80211_MCGRP_NAN, gfp); 21882 else 21883 genlmsg_unicast(wiphy_net(wiphy), msg, 21884 wdev->owner_nlportid); 21885 return; 21886 21887 nla_put_failure: 21888 nlmsg_free(msg); 21889 } 21890 EXPORT_SYMBOL(cfg80211_nan_cluster_joined); 21891 21892 /* initialisation/exit functions */ 21893 21894 int __init nl80211_init(void) 21895 { 21896 int err; 21897 21898 err = genl_register_family(&nl80211_fam); 21899 if (err) 21900 return err; 21901 21902 err = netlink_register_notifier(&nl80211_netlink_notifier); 21903 if (err) 21904 goto err_out; 21905 21906 return 0; 21907 err_out: 21908 genl_unregister_family(&nl80211_fam); 21909 return err; 21910 } 21911 21912 void nl80211_exit(void) 21913 { 21914 netlink_unregister_notifier(&nl80211_netlink_notifier); 21915 genl_unregister_family(&nl80211_fam); 21916 } 21917