1 /* 2 * This is the new netlink-based wireless configuration interface. 3 * 4 * Copyright 2006-2010 Johannes Berg <johannes@sipsolutions.net> 5 * Copyright 2013-2014 Intel Mobile Communications GmbH 6 */ 7 8 #include <linux/if.h> 9 #include <linux/module.h> 10 #include <linux/err.h> 11 #include <linux/slab.h> 12 #include <linux/list.h> 13 #include <linux/if_ether.h> 14 #include <linux/ieee80211.h> 15 #include <linux/nl80211.h> 16 #include <linux/rtnetlink.h> 17 #include <linux/netlink.h> 18 #include <linux/etherdevice.h> 19 #include <net/net_namespace.h> 20 #include <net/genetlink.h> 21 #include <net/cfg80211.h> 22 #include <net/sock.h> 23 #include <net/inet_connection_sock.h> 24 #include "core.h" 25 #include "nl80211.h" 26 #include "reg.h" 27 #include "rdev-ops.h" 28 29 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev, 30 struct genl_info *info, 31 struct cfg80211_crypto_settings *settings, 32 int cipher_limit); 33 34 static int nl80211_pre_doit(const struct genl_ops *ops, struct sk_buff *skb, 35 struct genl_info *info); 36 static void nl80211_post_doit(const struct genl_ops *ops, struct sk_buff *skb, 37 struct genl_info *info); 38 39 /* the netlink family */ 40 static struct genl_family nl80211_fam = { 41 .id = GENL_ID_GENERATE, /* don't bother with a hardcoded ID */ 42 .name = NL80211_GENL_NAME, /* have users key off the name instead */ 43 .hdrsize = 0, /* no private header */ 44 .version = 1, /* no particular meaning now */ 45 .maxattr = NL80211_ATTR_MAX, 46 .netnsok = true, 47 .pre_doit = nl80211_pre_doit, 48 .post_doit = nl80211_post_doit, 49 }; 50 51 /* multicast groups */ 52 enum nl80211_multicast_groups { 53 NL80211_MCGRP_CONFIG, 54 NL80211_MCGRP_SCAN, 55 NL80211_MCGRP_REGULATORY, 56 NL80211_MCGRP_MLME, 57 NL80211_MCGRP_VENDOR, 58 NL80211_MCGRP_TESTMODE /* keep last - ifdef! */ 59 }; 60 61 static const struct genl_multicast_group nl80211_mcgrps[] = { 62 [NL80211_MCGRP_CONFIG] = { .name = NL80211_MULTICAST_GROUP_CONFIG }, 63 [NL80211_MCGRP_SCAN] = { .name = NL80211_MULTICAST_GROUP_SCAN }, 64 [NL80211_MCGRP_REGULATORY] = { .name = NL80211_MULTICAST_GROUP_REG }, 65 [NL80211_MCGRP_MLME] = { .name = NL80211_MULTICAST_GROUP_MLME }, 66 [NL80211_MCGRP_VENDOR] = { .name = NL80211_MULTICAST_GROUP_VENDOR }, 67 #ifdef CONFIG_NL80211_TESTMODE 68 [NL80211_MCGRP_TESTMODE] = { .name = NL80211_MULTICAST_GROUP_TESTMODE } 69 #endif 70 }; 71 72 /* returns ERR_PTR values */ 73 static struct wireless_dev * 74 __cfg80211_wdev_from_attrs(struct net *netns, struct nlattr **attrs) 75 { 76 struct cfg80211_registered_device *rdev; 77 struct wireless_dev *result = NULL; 78 bool have_ifidx = attrs[NL80211_ATTR_IFINDEX]; 79 bool have_wdev_id = attrs[NL80211_ATTR_WDEV]; 80 u64 wdev_id; 81 int wiphy_idx = -1; 82 int ifidx = -1; 83 84 ASSERT_RTNL(); 85 86 if (!have_ifidx && !have_wdev_id) 87 return ERR_PTR(-EINVAL); 88 89 if (have_ifidx) 90 ifidx = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]); 91 if (have_wdev_id) { 92 wdev_id = nla_get_u64(attrs[NL80211_ATTR_WDEV]); 93 wiphy_idx = wdev_id >> 32; 94 } 95 96 list_for_each_entry(rdev, &cfg80211_rdev_list, list) { 97 struct wireless_dev *wdev; 98 99 if (wiphy_net(&rdev->wiphy) != netns) 100 continue; 101 102 if (have_wdev_id && rdev->wiphy_idx != wiphy_idx) 103 continue; 104 105 list_for_each_entry(wdev, &rdev->wdev_list, list) { 106 if (have_ifidx && wdev->netdev && 107 wdev->netdev->ifindex == ifidx) { 108 result = wdev; 109 break; 110 } 111 if (have_wdev_id && wdev->identifier == (u32)wdev_id) { 112 result = wdev; 113 break; 114 } 115 } 116 117 if (result) 118 break; 119 } 120 121 if (result) 122 return result; 123 return ERR_PTR(-ENODEV); 124 } 125 126 static struct cfg80211_registered_device * 127 __cfg80211_rdev_from_attrs(struct net *netns, struct nlattr **attrs) 128 { 129 struct cfg80211_registered_device *rdev = NULL, *tmp; 130 struct net_device *netdev; 131 132 ASSERT_RTNL(); 133 134 if (!attrs[NL80211_ATTR_WIPHY] && 135 !attrs[NL80211_ATTR_IFINDEX] && 136 !attrs[NL80211_ATTR_WDEV]) 137 return ERR_PTR(-EINVAL); 138 139 if (attrs[NL80211_ATTR_WIPHY]) 140 rdev = cfg80211_rdev_by_wiphy_idx( 141 nla_get_u32(attrs[NL80211_ATTR_WIPHY])); 142 143 if (attrs[NL80211_ATTR_WDEV]) { 144 u64 wdev_id = nla_get_u64(attrs[NL80211_ATTR_WDEV]); 145 struct wireless_dev *wdev; 146 bool found = false; 147 148 tmp = cfg80211_rdev_by_wiphy_idx(wdev_id >> 32); 149 if (tmp) { 150 /* make sure wdev exists */ 151 list_for_each_entry(wdev, &tmp->wdev_list, list) { 152 if (wdev->identifier != (u32)wdev_id) 153 continue; 154 found = true; 155 break; 156 } 157 158 if (!found) 159 tmp = NULL; 160 161 if (rdev && tmp != rdev) 162 return ERR_PTR(-EINVAL); 163 rdev = tmp; 164 } 165 } 166 167 if (attrs[NL80211_ATTR_IFINDEX]) { 168 int ifindex = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]); 169 netdev = __dev_get_by_index(netns, ifindex); 170 if (netdev) { 171 if (netdev->ieee80211_ptr) 172 tmp = wiphy_to_rdev( 173 netdev->ieee80211_ptr->wiphy); 174 else 175 tmp = NULL; 176 177 /* not wireless device -- return error */ 178 if (!tmp) 179 return ERR_PTR(-EINVAL); 180 181 /* mismatch -- return error */ 182 if (rdev && tmp != rdev) 183 return ERR_PTR(-EINVAL); 184 185 rdev = tmp; 186 } 187 } 188 189 if (!rdev) 190 return ERR_PTR(-ENODEV); 191 192 if (netns != wiphy_net(&rdev->wiphy)) 193 return ERR_PTR(-ENODEV); 194 195 return rdev; 196 } 197 198 /* 199 * This function returns a pointer to the driver 200 * that the genl_info item that is passed refers to. 201 * 202 * The result of this can be a PTR_ERR and hence must 203 * be checked with IS_ERR() for errors. 204 */ 205 static struct cfg80211_registered_device * 206 cfg80211_get_dev_from_info(struct net *netns, struct genl_info *info) 207 { 208 return __cfg80211_rdev_from_attrs(netns, info->attrs); 209 } 210 211 /* policy for the attributes */ 212 static const struct nla_policy nl80211_policy[NUM_NL80211_ATTR] = { 213 [NL80211_ATTR_WIPHY] = { .type = NLA_U32 }, 214 [NL80211_ATTR_WIPHY_NAME] = { .type = NLA_NUL_STRING, 215 .len = 20-1 }, 216 [NL80211_ATTR_WIPHY_TXQ_PARAMS] = { .type = NLA_NESTED }, 217 218 [NL80211_ATTR_WIPHY_FREQ] = { .type = NLA_U32 }, 219 [NL80211_ATTR_WIPHY_CHANNEL_TYPE] = { .type = NLA_U32 }, 220 [NL80211_ATTR_CHANNEL_WIDTH] = { .type = NLA_U32 }, 221 [NL80211_ATTR_CENTER_FREQ1] = { .type = NLA_U32 }, 222 [NL80211_ATTR_CENTER_FREQ2] = { .type = NLA_U32 }, 223 224 [NL80211_ATTR_WIPHY_RETRY_SHORT] = { .type = NLA_U8 }, 225 [NL80211_ATTR_WIPHY_RETRY_LONG] = { .type = NLA_U8 }, 226 [NL80211_ATTR_WIPHY_FRAG_THRESHOLD] = { .type = NLA_U32 }, 227 [NL80211_ATTR_WIPHY_RTS_THRESHOLD] = { .type = NLA_U32 }, 228 [NL80211_ATTR_WIPHY_COVERAGE_CLASS] = { .type = NLA_U8 }, 229 [NL80211_ATTR_WIPHY_DYN_ACK] = { .type = NLA_FLAG }, 230 231 [NL80211_ATTR_IFTYPE] = { .type = NLA_U32 }, 232 [NL80211_ATTR_IFINDEX] = { .type = NLA_U32 }, 233 [NL80211_ATTR_IFNAME] = { .type = NLA_NUL_STRING, .len = IFNAMSIZ-1 }, 234 235 [NL80211_ATTR_MAC] = { .len = ETH_ALEN }, 236 [NL80211_ATTR_PREV_BSSID] = { .len = ETH_ALEN }, 237 238 [NL80211_ATTR_KEY] = { .type = NLA_NESTED, }, 239 [NL80211_ATTR_KEY_DATA] = { .type = NLA_BINARY, 240 .len = WLAN_MAX_KEY_LEN }, 241 [NL80211_ATTR_KEY_IDX] = { .type = NLA_U8 }, 242 [NL80211_ATTR_KEY_CIPHER] = { .type = NLA_U32 }, 243 [NL80211_ATTR_KEY_DEFAULT] = { .type = NLA_FLAG }, 244 [NL80211_ATTR_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 }, 245 [NL80211_ATTR_KEY_TYPE] = { .type = NLA_U32 }, 246 247 [NL80211_ATTR_BEACON_INTERVAL] = { .type = NLA_U32 }, 248 [NL80211_ATTR_DTIM_PERIOD] = { .type = NLA_U32 }, 249 [NL80211_ATTR_BEACON_HEAD] = { .type = NLA_BINARY, 250 .len = IEEE80211_MAX_DATA_LEN }, 251 [NL80211_ATTR_BEACON_TAIL] = { .type = NLA_BINARY, 252 .len = IEEE80211_MAX_DATA_LEN }, 253 [NL80211_ATTR_STA_AID] = { .type = NLA_U16 }, 254 [NL80211_ATTR_STA_FLAGS] = { .type = NLA_NESTED }, 255 [NL80211_ATTR_STA_LISTEN_INTERVAL] = { .type = NLA_U16 }, 256 [NL80211_ATTR_STA_SUPPORTED_RATES] = { .type = NLA_BINARY, 257 .len = NL80211_MAX_SUPP_RATES }, 258 [NL80211_ATTR_STA_PLINK_ACTION] = { .type = NLA_U8 }, 259 [NL80211_ATTR_STA_VLAN] = { .type = NLA_U32 }, 260 [NL80211_ATTR_MNTR_FLAGS] = { /* NLA_NESTED can't be empty */ }, 261 [NL80211_ATTR_MESH_ID] = { .type = NLA_BINARY, 262 .len = IEEE80211_MAX_MESH_ID_LEN }, 263 [NL80211_ATTR_MPATH_NEXT_HOP] = { .type = NLA_U32 }, 264 265 [NL80211_ATTR_REG_ALPHA2] = { .type = NLA_STRING, .len = 2 }, 266 [NL80211_ATTR_REG_RULES] = { .type = NLA_NESTED }, 267 268 [NL80211_ATTR_BSS_CTS_PROT] = { .type = NLA_U8 }, 269 [NL80211_ATTR_BSS_SHORT_PREAMBLE] = { .type = NLA_U8 }, 270 [NL80211_ATTR_BSS_SHORT_SLOT_TIME] = { .type = NLA_U8 }, 271 [NL80211_ATTR_BSS_BASIC_RATES] = { .type = NLA_BINARY, 272 .len = NL80211_MAX_SUPP_RATES }, 273 [NL80211_ATTR_BSS_HT_OPMODE] = { .type = NLA_U16 }, 274 275 [NL80211_ATTR_MESH_CONFIG] = { .type = NLA_NESTED }, 276 [NL80211_ATTR_SUPPORT_MESH_AUTH] = { .type = NLA_FLAG }, 277 278 [NL80211_ATTR_HT_CAPABILITY] = { .len = NL80211_HT_CAPABILITY_LEN }, 279 280 [NL80211_ATTR_MGMT_SUBTYPE] = { .type = NLA_U8 }, 281 [NL80211_ATTR_IE] = { .type = NLA_BINARY, 282 .len = IEEE80211_MAX_DATA_LEN }, 283 [NL80211_ATTR_SCAN_FREQUENCIES] = { .type = NLA_NESTED }, 284 [NL80211_ATTR_SCAN_SSIDS] = { .type = NLA_NESTED }, 285 286 [NL80211_ATTR_SSID] = { .type = NLA_BINARY, 287 .len = IEEE80211_MAX_SSID_LEN }, 288 [NL80211_ATTR_AUTH_TYPE] = { .type = NLA_U32 }, 289 [NL80211_ATTR_REASON_CODE] = { .type = NLA_U16 }, 290 [NL80211_ATTR_FREQ_FIXED] = { .type = NLA_FLAG }, 291 [NL80211_ATTR_TIMED_OUT] = { .type = NLA_FLAG }, 292 [NL80211_ATTR_USE_MFP] = { .type = NLA_U32 }, 293 [NL80211_ATTR_STA_FLAGS2] = { 294 .len = sizeof(struct nl80211_sta_flag_update), 295 }, 296 [NL80211_ATTR_CONTROL_PORT] = { .type = NLA_FLAG }, 297 [NL80211_ATTR_CONTROL_PORT_ETHERTYPE] = { .type = NLA_U16 }, 298 [NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT] = { .type = NLA_FLAG }, 299 [NL80211_ATTR_PRIVACY] = { .type = NLA_FLAG }, 300 [NL80211_ATTR_CIPHER_SUITE_GROUP] = { .type = NLA_U32 }, 301 [NL80211_ATTR_WPA_VERSIONS] = { .type = NLA_U32 }, 302 [NL80211_ATTR_PID] = { .type = NLA_U32 }, 303 [NL80211_ATTR_4ADDR] = { .type = NLA_U8 }, 304 [NL80211_ATTR_PMKID] = { .type = NLA_BINARY, 305 .len = WLAN_PMKID_LEN }, 306 [NL80211_ATTR_DURATION] = { .type = NLA_U32 }, 307 [NL80211_ATTR_COOKIE] = { .type = NLA_U64 }, 308 [NL80211_ATTR_TX_RATES] = { .type = NLA_NESTED }, 309 [NL80211_ATTR_FRAME] = { .type = NLA_BINARY, 310 .len = IEEE80211_MAX_DATA_LEN }, 311 [NL80211_ATTR_FRAME_MATCH] = { .type = NLA_BINARY, }, 312 [NL80211_ATTR_PS_STATE] = { .type = NLA_U32 }, 313 [NL80211_ATTR_CQM] = { .type = NLA_NESTED, }, 314 [NL80211_ATTR_LOCAL_STATE_CHANGE] = { .type = NLA_FLAG }, 315 [NL80211_ATTR_AP_ISOLATE] = { .type = NLA_U8 }, 316 [NL80211_ATTR_WIPHY_TX_POWER_SETTING] = { .type = NLA_U32 }, 317 [NL80211_ATTR_WIPHY_TX_POWER_LEVEL] = { .type = NLA_U32 }, 318 [NL80211_ATTR_FRAME_TYPE] = { .type = NLA_U16 }, 319 [NL80211_ATTR_WIPHY_ANTENNA_TX] = { .type = NLA_U32 }, 320 [NL80211_ATTR_WIPHY_ANTENNA_RX] = { .type = NLA_U32 }, 321 [NL80211_ATTR_MCAST_RATE] = { .type = NLA_U32 }, 322 [NL80211_ATTR_OFFCHANNEL_TX_OK] = { .type = NLA_FLAG }, 323 [NL80211_ATTR_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED }, 324 [NL80211_ATTR_WOWLAN_TRIGGERS] = { .type = NLA_NESTED }, 325 [NL80211_ATTR_STA_PLINK_STATE] = { .type = NLA_U8 }, 326 [NL80211_ATTR_SCHED_SCAN_INTERVAL] = { .type = NLA_U32 }, 327 [NL80211_ATTR_REKEY_DATA] = { .type = NLA_NESTED }, 328 [NL80211_ATTR_SCAN_SUPP_RATES] = { .type = NLA_NESTED }, 329 [NL80211_ATTR_HIDDEN_SSID] = { .type = NLA_U32 }, 330 [NL80211_ATTR_IE_PROBE_RESP] = { .type = NLA_BINARY, 331 .len = IEEE80211_MAX_DATA_LEN }, 332 [NL80211_ATTR_IE_ASSOC_RESP] = { .type = NLA_BINARY, 333 .len = IEEE80211_MAX_DATA_LEN }, 334 [NL80211_ATTR_ROAM_SUPPORT] = { .type = NLA_FLAG }, 335 [NL80211_ATTR_SCHED_SCAN_MATCH] = { .type = NLA_NESTED }, 336 [NL80211_ATTR_TX_NO_CCK_RATE] = { .type = NLA_FLAG }, 337 [NL80211_ATTR_TDLS_ACTION] = { .type = NLA_U8 }, 338 [NL80211_ATTR_TDLS_DIALOG_TOKEN] = { .type = NLA_U8 }, 339 [NL80211_ATTR_TDLS_OPERATION] = { .type = NLA_U8 }, 340 [NL80211_ATTR_TDLS_SUPPORT] = { .type = NLA_FLAG }, 341 [NL80211_ATTR_TDLS_EXTERNAL_SETUP] = { .type = NLA_FLAG }, 342 [NL80211_ATTR_TDLS_INITIATOR] = { .type = NLA_FLAG }, 343 [NL80211_ATTR_DONT_WAIT_FOR_ACK] = { .type = NLA_FLAG }, 344 [NL80211_ATTR_PROBE_RESP] = { .type = NLA_BINARY, 345 .len = IEEE80211_MAX_DATA_LEN }, 346 [NL80211_ATTR_DFS_REGION] = { .type = NLA_U8 }, 347 [NL80211_ATTR_DISABLE_HT] = { .type = NLA_FLAG }, 348 [NL80211_ATTR_HT_CAPABILITY_MASK] = { 349 .len = NL80211_HT_CAPABILITY_LEN 350 }, 351 [NL80211_ATTR_NOACK_MAP] = { .type = NLA_U16 }, 352 [NL80211_ATTR_INACTIVITY_TIMEOUT] = { .type = NLA_U16 }, 353 [NL80211_ATTR_BG_SCAN_PERIOD] = { .type = NLA_U16 }, 354 [NL80211_ATTR_WDEV] = { .type = NLA_U64 }, 355 [NL80211_ATTR_USER_REG_HINT_TYPE] = { .type = NLA_U32 }, 356 [NL80211_ATTR_SAE_DATA] = { .type = NLA_BINARY, }, 357 [NL80211_ATTR_VHT_CAPABILITY] = { .len = NL80211_VHT_CAPABILITY_LEN }, 358 [NL80211_ATTR_SCAN_FLAGS] = { .type = NLA_U32 }, 359 [NL80211_ATTR_P2P_CTWINDOW] = { .type = NLA_U8 }, 360 [NL80211_ATTR_P2P_OPPPS] = { .type = NLA_U8 }, 361 [NL80211_ATTR_ACL_POLICY] = {. type = NLA_U32 }, 362 [NL80211_ATTR_MAC_ADDRS] = { .type = NLA_NESTED }, 363 [NL80211_ATTR_STA_CAPABILITY] = { .type = NLA_U16 }, 364 [NL80211_ATTR_STA_EXT_CAPABILITY] = { .type = NLA_BINARY, }, 365 [NL80211_ATTR_SPLIT_WIPHY_DUMP] = { .type = NLA_FLAG, }, 366 [NL80211_ATTR_DISABLE_VHT] = { .type = NLA_FLAG }, 367 [NL80211_ATTR_VHT_CAPABILITY_MASK] = { 368 .len = NL80211_VHT_CAPABILITY_LEN, 369 }, 370 [NL80211_ATTR_MDID] = { .type = NLA_U16 }, 371 [NL80211_ATTR_IE_RIC] = { .type = NLA_BINARY, 372 .len = IEEE80211_MAX_DATA_LEN }, 373 [NL80211_ATTR_PEER_AID] = { .type = NLA_U16 }, 374 [NL80211_ATTR_CH_SWITCH_COUNT] = { .type = NLA_U32 }, 375 [NL80211_ATTR_CH_SWITCH_BLOCK_TX] = { .type = NLA_FLAG }, 376 [NL80211_ATTR_CSA_IES] = { .type = NLA_NESTED }, 377 [NL80211_ATTR_CSA_C_OFF_BEACON] = { .type = NLA_BINARY }, 378 [NL80211_ATTR_CSA_C_OFF_PRESP] = { .type = NLA_BINARY }, 379 [NL80211_ATTR_STA_SUPPORTED_CHANNELS] = { .type = NLA_BINARY }, 380 [NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES] = { .type = NLA_BINARY }, 381 [NL80211_ATTR_HANDLE_DFS] = { .type = NLA_FLAG }, 382 [NL80211_ATTR_OPMODE_NOTIF] = { .type = NLA_U8 }, 383 [NL80211_ATTR_VENDOR_ID] = { .type = NLA_U32 }, 384 [NL80211_ATTR_VENDOR_SUBCMD] = { .type = NLA_U32 }, 385 [NL80211_ATTR_VENDOR_DATA] = { .type = NLA_BINARY }, 386 [NL80211_ATTR_QOS_MAP] = { .type = NLA_BINARY, 387 .len = IEEE80211_QOS_MAP_LEN_MAX }, 388 [NL80211_ATTR_MAC_HINT] = { .len = ETH_ALEN }, 389 [NL80211_ATTR_WIPHY_FREQ_HINT] = { .type = NLA_U32 }, 390 [NL80211_ATTR_TDLS_PEER_CAPABILITY] = { .type = NLA_U32 }, 391 [NL80211_ATTR_SOCKET_OWNER] = { .type = NLA_FLAG }, 392 [NL80211_ATTR_CSA_C_OFFSETS_TX] = { .type = NLA_BINARY }, 393 [NL80211_ATTR_USE_RRM] = { .type = NLA_FLAG }, 394 [NL80211_ATTR_TSID] = { .type = NLA_U8 }, 395 [NL80211_ATTR_USER_PRIO] = { .type = NLA_U8 }, 396 [NL80211_ATTR_ADMITTED_TIME] = { .type = NLA_U16 }, 397 [NL80211_ATTR_SMPS_MODE] = { .type = NLA_U8 }, 398 [NL80211_ATTR_MAC_MASK] = { .len = ETH_ALEN }, 399 [NL80211_ATTR_WIPHY_SELF_MANAGED_REG] = { .type = NLA_FLAG }, 400 [NL80211_ATTR_NETNS_FD] = { .type = NLA_U32 }, 401 [NL80211_ATTR_SCHED_SCAN_DELAY] = { .type = NLA_U32 }, 402 }; 403 404 /* policy for the key attributes */ 405 static const struct nla_policy nl80211_key_policy[NL80211_KEY_MAX + 1] = { 406 [NL80211_KEY_DATA] = { .type = NLA_BINARY, .len = WLAN_MAX_KEY_LEN }, 407 [NL80211_KEY_IDX] = { .type = NLA_U8 }, 408 [NL80211_KEY_CIPHER] = { .type = NLA_U32 }, 409 [NL80211_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 }, 410 [NL80211_KEY_DEFAULT] = { .type = NLA_FLAG }, 411 [NL80211_KEY_DEFAULT_MGMT] = { .type = NLA_FLAG }, 412 [NL80211_KEY_TYPE] = { .type = NLA_U32 }, 413 [NL80211_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED }, 414 }; 415 416 /* policy for the key default flags */ 417 static const struct nla_policy 418 nl80211_key_default_policy[NUM_NL80211_KEY_DEFAULT_TYPES] = { 419 [NL80211_KEY_DEFAULT_TYPE_UNICAST] = { .type = NLA_FLAG }, 420 [NL80211_KEY_DEFAULT_TYPE_MULTICAST] = { .type = NLA_FLAG }, 421 }; 422 423 /* policy for WoWLAN attributes */ 424 static const struct nla_policy 425 nl80211_wowlan_policy[NUM_NL80211_WOWLAN_TRIG] = { 426 [NL80211_WOWLAN_TRIG_ANY] = { .type = NLA_FLAG }, 427 [NL80211_WOWLAN_TRIG_DISCONNECT] = { .type = NLA_FLAG }, 428 [NL80211_WOWLAN_TRIG_MAGIC_PKT] = { .type = NLA_FLAG }, 429 [NL80211_WOWLAN_TRIG_PKT_PATTERN] = { .type = NLA_NESTED }, 430 [NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE] = { .type = NLA_FLAG }, 431 [NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST] = { .type = NLA_FLAG }, 432 [NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE] = { .type = NLA_FLAG }, 433 [NL80211_WOWLAN_TRIG_RFKILL_RELEASE] = { .type = NLA_FLAG }, 434 [NL80211_WOWLAN_TRIG_TCP_CONNECTION] = { .type = NLA_NESTED }, 435 [NL80211_WOWLAN_TRIG_NET_DETECT] = { .type = NLA_NESTED }, 436 }; 437 438 static const struct nla_policy 439 nl80211_wowlan_tcp_policy[NUM_NL80211_WOWLAN_TCP] = { 440 [NL80211_WOWLAN_TCP_SRC_IPV4] = { .type = NLA_U32 }, 441 [NL80211_WOWLAN_TCP_DST_IPV4] = { .type = NLA_U32 }, 442 [NL80211_WOWLAN_TCP_DST_MAC] = { .len = ETH_ALEN }, 443 [NL80211_WOWLAN_TCP_SRC_PORT] = { .type = NLA_U16 }, 444 [NL80211_WOWLAN_TCP_DST_PORT] = { .type = NLA_U16 }, 445 [NL80211_WOWLAN_TCP_DATA_PAYLOAD] = { .len = 1 }, 446 [NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ] = { 447 .len = sizeof(struct nl80211_wowlan_tcp_data_seq) 448 }, 449 [NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN] = { 450 .len = sizeof(struct nl80211_wowlan_tcp_data_token) 451 }, 452 [NL80211_WOWLAN_TCP_DATA_INTERVAL] = { .type = NLA_U32 }, 453 [NL80211_WOWLAN_TCP_WAKE_PAYLOAD] = { .len = 1 }, 454 [NL80211_WOWLAN_TCP_WAKE_MASK] = { .len = 1 }, 455 }; 456 457 /* policy for coalesce rule attributes */ 458 static const struct nla_policy 459 nl80211_coalesce_policy[NUM_NL80211_ATTR_COALESCE_RULE] = { 460 [NL80211_ATTR_COALESCE_RULE_DELAY] = { .type = NLA_U32 }, 461 [NL80211_ATTR_COALESCE_RULE_CONDITION] = { .type = NLA_U32 }, 462 [NL80211_ATTR_COALESCE_RULE_PKT_PATTERN] = { .type = NLA_NESTED }, 463 }; 464 465 /* policy for GTK rekey offload attributes */ 466 static const struct nla_policy 467 nl80211_rekey_policy[NUM_NL80211_REKEY_DATA] = { 468 [NL80211_REKEY_DATA_KEK] = { .len = NL80211_KEK_LEN }, 469 [NL80211_REKEY_DATA_KCK] = { .len = NL80211_KCK_LEN }, 470 [NL80211_REKEY_DATA_REPLAY_CTR] = { .len = NL80211_REPLAY_CTR_LEN }, 471 }; 472 473 static const struct nla_policy 474 nl80211_match_policy[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1] = { 475 [NL80211_SCHED_SCAN_MATCH_ATTR_SSID] = { .type = NLA_BINARY, 476 .len = IEEE80211_MAX_SSID_LEN }, 477 [NL80211_SCHED_SCAN_MATCH_ATTR_RSSI] = { .type = NLA_U32 }, 478 }; 479 480 static int nl80211_prepare_wdev_dump(struct sk_buff *skb, 481 struct netlink_callback *cb, 482 struct cfg80211_registered_device **rdev, 483 struct wireless_dev **wdev) 484 { 485 int err; 486 487 rtnl_lock(); 488 489 if (!cb->args[0]) { 490 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize, 491 nl80211_fam.attrbuf, nl80211_fam.maxattr, 492 nl80211_policy); 493 if (err) 494 goto out_unlock; 495 496 *wdev = __cfg80211_wdev_from_attrs(sock_net(skb->sk), 497 nl80211_fam.attrbuf); 498 if (IS_ERR(*wdev)) { 499 err = PTR_ERR(*wdev); 500 goto out_unlock; 501 } 502 *rdev = wiphy_to_rdev((*wdev)->wiphy); 503 /* 0 is the first index - add 1 to parse only once */ 504 cb->args[0] = (*rdev)->wiphy_idx + 1; 505 cb->args[1] = (*wdev)->identifier; 506 } else { 507 /* subtract the 1 again here */ 508 struct wiphy *wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1); 509 struct wireless_dev *tmp; 510 511 if (!wiphy) { 512 err = -ENODEV; 513 goto out_unlock; 514 } 515 *rdev = wiphy_to_rdev(wiphy); 516 *wdev = NULL; 517 518 list_for_each_entry(tmp, &(*rdev)->wdev_list, list) { 519 if (tmp->identifier == cb->args[1]) { 520 *wdev = tmp; 521 break; 522 } 523 } 524 525 if (!*wdev) { 526 err = -ENODEV; 527 goto out_unlock; 528 } 529 } 530 531 return 0; 532 out_unlock: 533 rtnl_unlock(); 534 return err; 535 } 536 537 static void nl80211_finish_wdev_dump(struct cfg80211_registered_device *rdev) 538 { 539 rtnl_unlock(); 540 } 541 542 /* IE validation */ 543 static bool is_valid_ie_attr(const struct nlattr *attr) 544 { 545 const u8 *pos; 546 int len; 547 548 if (!attr) 549 return true; 550 551 pos = nla_data(attr); 552 len = nla_len(attr); 553 554 while (len) { 555 u8 elemlen; 556 557 if (len < 2) 558 return false; 559 len -= 2; 560 561 elemlen = pos[1]; 562 if (elemlen > len) 563 return false; 564 565 len -= elemlen; 566 pos += 2 + elemlen; 567 } 568 569 return true; 570 } 571 572 /* message building helper */ 573 static inline void *nl80211hdr_put(struct sk_buff *skb, u32 portid, u32 seq, 574 int flags, u8 cmd) 575 { 576 /* since there is no private header just add the generic one */ 577 return genlmsg_put(skb, portid, seq, &nl80211_fam, flags, cmd); 578 } 579 580 static int nl80211_msg_put_channel(struct sk_buff *msg, 581 struct ieee80211_channel *chan, 582 bool large) 583 { 584 /* Some channels must be completely excluded from the 585 * list to protect old user-space tools from breaking 586 */ 587 if (!large && chan->flags & 588 (IEEE80211_CHAN_NO_10MHZ | IEEE80211_CHAN_NO_20MHZ)) 589 return 0; 590 591 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_FREQ, 592 chan->center_freq)) 593 goto nla_put_failure; 594 595 if ((chan->flags & IEEE80211_CHAN_DISABLED) && 596 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_DISABLED)) 597 goto nla_put_failure; 598 if (chan->flags & IEEE80211_CHAN_NO_IR) { 599 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_IR)) 600 goto nla_put_failure; 601 if (nla_put_flag(msg, __NL80211_FREQUENCY_ATTR_NO_IBSS)) 602 goto nla_put_failure; 603 } 604 if (chan->flags & IEEE80211_CHAN_RADAR) { 605 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_RADAR)) 606 goto nla_put_failure; 607 if (large) { 608 u32 time; 609 610 time = elapsed_jiffies_msecs(chan->dfs_state_entered); 611 612 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_STATE, 613 chan->dfs_state)) 614 goto nla_put_failure; 615 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_TIME, 616 time)) 617 goto nla_put_failure; 618 if (nla_put_u32(msg, 619 NL80211_FREQUENCY_ATTR_DFS_CAC_TIME, 620 chan->dfs_cac_ms)) 621 goto nla_put_failure; 622 } 623 } 624 625 if (large) { 626 if ((chan->flags & IEEE80211_CHAN_NO_HT40MINUS) && 627 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_MINUS)) 628 goto nla_put_failure; 629 if ((chan->flags & IEEE80211_CHAN_NO_HT40PLUS) && 630 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_PLUS)) 631 goto nla_put_failure; 632 if ((chan->flags & IEEE80211_CHAN_NO_80MHZ) && 633 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_80MHZ)) 634 goto nla_put_failure; 635 if ((chan->flags & IEEE80211_CHAN_NO_160MHZ) && 636 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_160MHZ)) 637 goto nla_put_failure; 638 if ((chan->flags & IEEE80211_CHAN_INDOOR_ONLY) && 639 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_INDOOR_ONLY)) 640 goto nla_put_failure; 641 if ((chan->flags & IEEE80211_CHAN_GO_CONCURRENT) && 642 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_GO_CONCURRENT)) 643 goto nla_put_failure; 644 if ((chan->flags & IEEE80211_CHAN_NO_20MHZ) && 645 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_20MHZ)) 646 goto nla_put_failure; 647 if ((chan->flags & IEEE80211_CHAN_NO_10MHZ) && 648 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_10MHZ)) 649 goto nla_put_failure; 650 } 651 652 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_MAX_TX_POWER, 653 DBM_TO_MBM(chan->max_power))) 654 goto nla_put_failure; 655 656 return 0; 657 658 nla_put_failure: 659 return -ENOBUFS; 660 } 661 662 /* netlink command implementations */ 663 664 struct key_parse { 665 struct key_params p; 666 int idx; 667 int type; 668 bool def, defmgmt; 669 bool def_uni, def_multi; 670 }; 671 672 static int nl80211_parse_key_new(struct nlattr *key, struct key_parse *k) 673 { 674 struct nlattr *tb[NL80211_KEY_MAX + 1]; 675 int err = nla_parse_nested(tb, NL80211_KEY_MAX, key, 676 nl80211_key_policy); 677 if (err) 678 return err; 679 680 k->def = !!tb[NL80211_KEY_DEFAULT]; 681 k->defmgmt = !!tb[NL80211_KEY_DEFAULT_MGMT]; 682 683 if (k->def) { 684 k->def_uni = true; 685 k->def_multi = true; 686 } 687 if (k->defmgmt) 688 k->def_multi = true; 689 690 if (tb[NL80211_KEY_IDX]) 691 k->idx = nla_get_u8(tb[NL80211_KEY_IDX]); 692 693 if (tb[NL80211_KEY_DATA]) { 694 k->p.key = nla_data(tb[NL80211_KEY_DATA]); 695 k->p.key_len = nla_len(tb[NL80211_KEY_DATA]); 696 } 697 698 if (tb[NL80211_KEY_SEQ]) { 699 k->p.seq = nla_data(tb[NL80211_KEY_SEQ]); 700 k->p.seq_len = nla_len(tb[NL80211_KEY_SEQ]); 701 } 702 703 if (tb[NL80211_KEY_CIPHER]) 704 k->p.cipher = nla_get_u32(tb[NL80211_KEY_CIPHER]); 705 706 if (tb[NL80211_KEY_TYPE]) { 707 k->type = nla_get_u32(tb[NL80211_KEY_TYPE]); 708 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES) 709 return -EINVAL; 710 } 711 712 if (tb[NL80211_KEY_DEFAULT_TYPES]) { 713 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES]; 714 err = nla_parse_nested(kdt, NUM_NL80211_KEY_DEFAULT_TYPES - 1, 715 tb[NL80211_KEY_DEFAULT_TYPES], 716 nl80211_key_default_policy); 717 if (err) 718 return err; 719 720 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST]; 721 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST]; 722 } 723 724 return 0; 725 } 726 727 static int nl80211_parse_key_old(struct genl_info *info, struct key_parse *k) 728 { 729 if (info->attrs[NL80211_ATTR_KEY_DATA]) { 730 k->p.key = nla_data(info->attrs[NL80211_ATTR_KEY_DATA]); 731 k->p.key_len = nla_len(info->attrs[NL80211_ATTR_KEY_DATA]); 732 } 733 734 if (info->attrs[NL80211_ATTR_KEY_SEQ]) { 735 k->p.seq = nla_data(info->attrs[NL80211_ATTR_KEY_SEQ]); 736 k->p.seq_len = nla_len(info->attrs[NL80211_ATTR_KEY_SEQ]); 737 } 738 739 if (info->attrs[NL80211_ATTR_KEY_IDX]) 740 k->idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]); 741 742 if (info->attrs[NL80211_ATTR_KEY_CIPHER]) 743 k->p.cipher = nla_get_u32(info->attrs[NL80211_ATTR_KEY_CIPHER]); 744 745 k->def = !!info->attrs[NL80211_ATTR_KEY_DEFAULT]; 746 k->defmgmt = !!info->attrs[NL80211_ATTR_KEY_DEFAULT_MGMT]; 747 748 if (k->def) { 749 k->def_uni = true; 750 k->def_multi = true; 751 } 752 if (k->defmgmt) 753 k->def_multi = true; 754 755 if (info->attrs[NL80211_ATTR_KEY_TYPE]) { 756 k->type = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]); 757 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES) 758 return -EINVAL; 759 } 760 761 if (info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES]) { 762 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES]; 763 int err = nla_parse_nested( 764 kdt, NUM_NL80211_KEY_DEFAULT_TYPES - 1, 765 info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES], 766 nl80211_key_default_policy); 767 if (err) 768 return err; 769 770 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST]; 771 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST]; 772 } 773 774 return 0; 775 } 776 777 static int nl80211_parse_key(struct genl_info *info, struct key_parse *k) 778 { 779 int err; 780 781 memset(k, 0, sizeof(*k)); 782 k->idx = -1; 783 k->type = -1; 784 785 if (info->attrs[NL80211_ATTR_KEY]) 786 err = nl80211_parse_key_new(info->attrs[NL80211_ATTR_KEY], k); 787 else 788 err = nl80211_parse_key_old(info, k); 789 790 if (err) 791 return err; 792 793 if (k->def && k->defmgmt) 794 return -EINVAL; 795 796 if (k->defmgmt) { 797 if (k->def_uni || !k->def_multi) 798 return -EINVAL; 799 } 800 801 if (k->idx != -1) { 802 if (k->defmgmt) { 803 if (k->idx < 4 || k->idx > 5) 804 return -EINVAL; 805 } else if (k->def) { 806 if (k->idx < 0 || k->idx > 3) 807 return -EINVAL; 808 } else { 809 if (k->idx < 0 || k->idx > 5) 810 return -EINVAL; 811 } 812 } 813 814 return 0; 815 } 816 817 static struct cfg80211_cached_keys * 818 nl80211_parse_connkeys(struct cfg80211_registered_device *rdev, 819 struct nlattr *keys, bool *no_ht) 820 { 821 struct key_parse parse; 822 struct nlattr *key; 823 struct cfg80211_cached_keys *result; 824 int rem, err, def = 0; 825 826 result = kzalloc(sizeof(*result), GFP_KERNEL); 827 if (!result) 828 return ERR_PTR(-ENOMEM); 829 830 result->def = -1; 831 result->defmgmt = -1; 832 833 nla_for_each_nested(key, keys, rem) { 834 memset(&parse, 0, sizeof(parse)); 835 parse.idx = -1; 836 837 err = nl80211_parse_key_new(key, &parse); 838 if (err) 839 goto error; 840 err = -EINVAL; 841 if (!parse.p.key) 842 goto error; 843 if (parse.idx < 0 || parse.idx > 4) 844 goto error; 845 if (parse.def) { 846 if (def) 847 goto error; 848 def = 1; 849 result->def = parse.idx; 850 if (!parse.def_uni || !parse.def_multi) 851 goto error; 852 } else if (parse.defmgmt) 853 goto error; 854 err = cfg80211_validate_key_settings(rdev, &parse.p, 855 parse.idx, false, NULL); 856 if (err) 857 goto error; 858 result->params[parse.idx].cipher = parse.p.cipher; 859 result->params[parse.idx].key_len = parse.p.key_len; 860 result->params[parse.idx].key = result->data[parse.idx]; 861 memcpy(result->data[parse.idx], parse.p.key, parse.p.key_len); 862 863 if (parse.p.cipher == WLAN_CIPHER_SUITE_WEP40 || 864 parse.p.cipher == WLAN_CIPHER_SUITE_WEP104) { 865 if (no_ht) 866 *no_ht = true; 867 } 868 } 869 870 return result; 871 error: 872 kfree(result); 873 return ERR_PTR(err); 874 } 875 876 static int nl80211_key_allowed(struct wireless_dev *wdev) 877 { 878 ASSERT_WDEV_LOCK(wdev); 879 880 switch (wdev->iftype) { 881 case NL80211_IFTYPE_AP: 882 case NL80211_IFTYPE_AP_VLAN: 883 case NL80211_IFTYPE_P2P_GO: 884 case NL80211_IFTYPE_MESH_POINT: 885 break; 886 case NL80211_IFTYPE_ADHOC: 887 case NL80211_IFTYPE_STATION: 888 case NL80211_IFTYPE_P2P_CLIENT: 889 if (!wdev->current_bss) 890 return -ENOLINK; 891 break; 892 case NL80211_IFTYPE_UNSPECIFIED: 893 case NL80211_IFTYPE_OCB: 894 case NL80211_IFTYPE_MONITOR: 895 case NL80211_IFTYPE_P2P_DEVICE: 896 case NL80211_IFTYPE_WDS: 897 case NUM_NL80211_IFTYPES: 898 return -EINVAL; 899 } 900 901 return 0; 902 } 903 904 static struct ieee80211_channel *nl80211_get_valid_chan(struct wiphy *wiphy, 905 struct nlattr *tb) 906 { 907 struct ieee80211_channel *chan; 908 909 if (tb == NULL) 910 return NULL; 911 chan = ieee80211_get_channel(wiphy, nla_get_u32(tb)); 912 if (!chan || chan->flags & IEEE80211_CHAN_DISABLED) 913 return NULL; 914 return chan; 915 } 916 917 static int nl80211_put_iftypes(struct sk_buff *msg, u32 attr, u16 ifmodes) 918 { 919 struct nlattr *nl_modes = nla_nest_start(msg, attr); 920 int i; 921 922 if (!nl_modes) 923 goto nla_put_failure; 924 925 i = 0; 926 while (ifmodes) { 927 if ((ifmodes & 1) && nla_put_flag(msg, i)) 928 goto nla_put_failure; 929 ifmodes >>= 1; 930 i++; 931 } 932 933 nla_nest_end(msg, nl_modes); 934 return 0; 935 936 nla_put_failure: 937 return -ENOBUFS; 938 } 939 940 static int nl80211_put_iface_combinations(struct wiphy *wiphy, 941 struct sk_buff *msg, 942 bool large) 943 { 944 struct nlattr *nl_combis; 945 int i, j; 946 947 nl_combis = nla_nest_start(msg, 948 NL80211_ATTR_INTERFACE_COMBINATIONS); 949 if (!nl_combis) 950 goto nla_put_failure; 951 952 for (i = 0; i < wiphy->n_iface_combinations; i++) { 953 const struct ieee80211_iface_combination *c; 954 struct nlattr *nl_combi, *nl_limits; 955 956 c = &wiphy->iface_combinations[i]; 957 958 nl_combi = nla_nest_start(msg, i + 1); 959 if (!nl_combi) 960 goto nla_put_failure; 961 962 nl_limits = nla_nest_start(msg, NL80211_IFACE_COMB_LIMITS); 963 if (!nl_limits) 964 goto nla_put_failure; 965 966 for (j = 0; j < c->n_limits; j++) { 967 struct nlattr *nl_limit; 968 969 nl_limit = nla_nest_start(msg, j + 1); 970 if (!nl_limit) 971 goto nla_put_failure; 972 if (nla_put_u32(msg, NL80211_IFACE_LIMIT_MAX, 973 c->limits[j].max)) 974 goto nla_put_failure; 975 if (nl80211_put_iftypes(msg, NL80211_IFACE_LIMIT_TYPES, 976 c->limits[j].types)) 977 goto nla_put_failure; 978 nla_nest_end(msg, nl_limit); 979 } 980 981 nla_nest_end(msg, nl_limits); 982 983 if (c->beacon_int_infra_match && 984 nla_put_flag(msg, NL80211_IFACE_COMB_STA_AP_BI_MATCH)) 985 goto nla_put_failure; 986 if (nla_put_u32(msg, NL80211_IFACE_COMB_NUM_CHANNELS, 987 c->num_different_channels) || 988 nla_put_u32(msg, NL80211_IFACE_COMB_MAXNUM, 989 c->max_interfaces)) 990 goto nla_put_failure; 991 if (large && 992 (nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_WIDTHS, 993 c->radar_detect_widths) || 994 nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_REGIONS, 995 c->radar_detect_regions))) 996 goto nla_put_failure; 997 998 nla_nest_end(msg, nl_combi); 999 } 1000 1001 nla_nest_end(msg, nl_combis); 1002 1003 return 0; 1004 nla_put_failure: 1005 return -ENOBUFS; 1006 } 1007 1008 #ifdef CONFIG_PM 1009 static int nl80211_send_wowlan_tcp_caps(struct cfg80211_registered_device *rdev, 1010 struct sk_buff *msg) 1011 { 1012 const struct wiphy_wowlan_tcp_support *tcp = rdev->wiphy.wowlan->tcp; 1013 struct nlattr *nl_tcp; 1014 1015 if (!tcp) 1016 return 0; 1017 1018 nl_tcp = nla_nest_start(msg, NL80211_WOWLAN_TRIG_TCP_CONNECTION); 1019 if (!nl_tcp) 1020 return -ENOBUFS; 1021 1022 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD, 1023 tcp->data_payload_max)) 1024 return -ENOBUFS; 1025 1026 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD, 1027 tcp->data_payload_max)) 1028 return -ENOBUFS; 1029 1030 if (tcp->seq && nla_put_flag(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ)) 1031 return -ENOBUFS; 1032 1033 if (tcp->tok && nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN, 1034 sizeof(*tcp->tok), tcp->tok)) 1035 return -ENOBUFS; 1036 1037 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL, 1038 tcp->data_interval_max)) 1039 return -ENOBUFS; 1040 1041 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD, 1042 tcp->wake_payload_max)) 1043 return -ENOBUFS; 1044 1045 nla_nest_end(msg, nl_tcp); 1046 return 0; 1047 } 1048 1049 static int nl80211_send_wowlan(struct sk_buff *msg, 1050 struct cfg80211_registered_device *rdev, 1051 bool large) 1052 { 1053 struct nlattr *nl_wowlan; 1054 1055 if (!rdev->wiphy.wowlan) 1056 return 0; 1057 1058 nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS_SUPPORTED); 1059 if (!nl_wowlan) 1060 return -ENOBUFS; 1061 1062 if (((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_ANY) && 1063 nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) || 1064 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_DISCONNECT) && 1065 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) || 1066 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT) && 1067 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) || 1068 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_SUPPORTS_GTK_REKEY) && 1069 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED)) || 1070 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE) && 1071 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) || 1072 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ) && 1073 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) || 1074 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE) && 1075 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) || 1076 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE) && 1077 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE))) 1078 return -ENOBUFS; 1079 1080 if (rdev->wiphy.wowlan->n_patterns) { 1081 struct nl80211_pattern_support pat = { 1082 .max_patterns = rdev->wiphy.wowlan->n_patterns, 1083 .min_pattern_len = rdev->wiphy.wowlan->pattern_min_len, 1084 .max_pattern_len = rdev->wiphy.wowlan->pattern_max_len, 1085 .max_pkt_offset = rdev->wiphy.wowlan->max_pkt_offset, 1086 }; 1087 1088 if (nla_put(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN, 1089 sizeof(pat), &pat)) 1090 return -ENOBUFS; 1091 } 1092 1093 if ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_NET_DETECT) && 1094 nla_put_u32(msg, NL80211_WOWLAN_TRIG_NET_DETECT, 1095 rdev->wiphy.wowlan->max_nd_match_sets)) 1096 return -ENOBUFS; 1097 1098 if (large && nl80211_send_wowlan_tcp_caps(rdev, msg)) 1099 return -ENOBUFS; 1100 1101 /* TODO: send wowlan net detect */ 1102 1103 nla_nest_end(msg, nl_wowlan); 1104 1105 return 0; 1106 } 1107 #endif 1108 1109 static int nl80211_send_coalesce(struct sk_buff *msg, 1110 struct cfg80211_registered_device *rdev) 1111 { 1112 struct nl80211_coalesce_rule_support rule; 1113 1114 if (!rdev->wiphy.coalesce) 1115 return 0; 1116 1117 rule.max_rules = rdev->wiphy.coalesce->n_rules; 1118 rule.max_delay = rdev->wiphy.coalesce->max_delay; 1119 rule.pat.max_patterns = rdev->wiphy.coalesce->n_patterns; 1120 rule.pat.min_pattern_len = rdev->wiphy.coalesce->pattern_min_len; 1121 rule.pat.max_pattern_len = rdev->wiphy.coalesce->pattern_max_len; 1122 rule.pat.max_pkt_offset = rdev->wiphy.coalesce->max_pkt_offset; 1123 1124 if (nla_put(msg, NL80211_ATTR_COALESCE_RULE, sizeof(rule), &rule)) 1125 return -ENOBUFS; 1126 1127 return 0; 1128 } 1129 1130 static int nl80211_send_band_rateinfo(struct sk_buff *msg, 1131 struct ieee80211_supported_band *sband) 1132 { 1133 struct nlattr *nl_rates, *nl_rate; 1134 struct ieee80211_rate *rate; 1135 int i; 1136 1137 /* add HT info */ 1138 if (sband->ht_cap.ht_supported && 1139 (nla_put(msg, NL80211_BAND_ATTR_HT_MCS_SET, 1140 sizeof(sband->ht_cap.mcs), 1141 &sband->ht_cap.mcs) || 1142 nla_put_u16(msg, NL80211_BAND_ATTR_HT_CAPA, 1143 sband->ht_cap.cap) || 1144 nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_FACTOR, 1145 sband->ht_cap.ampdu_factor) || 1146 nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_DENSITY, 1147 sband->ht_cap.ampdu_density))) 1148 return -ENOBUFS; 1149 1150 /* add VHT info */ 1151 if (sband->vht_cap.vht_supported && 1152 (nla_put(msg, NL80211_BAND_ATTR_VHT_MCS_SET, 1153 sizeof(sband->vht_cap.vht_mcs), 1154 &sband->vht_cap.vht_mcs) || 1155 nla_put_u32(msg, NL80211_BAND_ATTR_VHT_CAPA, 1156 sband->vht_cap.cap))) 1157 return -ENOBUFS; 1158 1159 /* add bitrates */ 1160 nl_rates = nla_nest_start(msg, NL80211_BAND_ATTR_RATES); 1161 if (!nl_rates) 1162 return -ENOBUFS; 1163 1164 for (i = 0; i < sband->n_bitrates; i++) { 1165 nl_rate = nla_nest_start(msg, i); 1166 if (!nl_rate) 1167 return -ENOBUFS; 1168 1169 rate = &sband->bitrates[i]; 1170 if (nla_put_u32(msg, NL80211_BITRATE_ATTR_RATE, 1171 rate->bitrate)) 1172 return -ENOBUFS; 1173 if ((rate->flags & IEEE80211_RATE_SHORT_PREAMBLE) && 1174 nla_put_flag(msg, 1175 NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE)) 1176 return -ENOBUFS; 1177 1178 nla_nest_end(msg, nl_rate); 1179 } 1180 1181 nla_nest_end(msg, nl_rates); 1182 1183 return 0; 1184 } 1185 1186 static int 1187 nl80211_send_mgmt_stypes(struct sk_buff *msg, 1188 const struct ieee80211_txrx_stypes *mgmt_stypes) 1189 { 1190 u16 stypes; 1191 struct nlattr *nl_ftypes, *nl_ifs; 1192 enum nl80211_iftype ift; 1193 int i; 1194 1195 if (!mgmt_stypes) 1196 return 0; 1197 1198 nl_ifs = nla_nest_start(msg, NL80211_ATTR_TX_FRAME_TYPES); 1199 if (!nl_ifs) 1200 return -ENOBUFS; 1201 1202 for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) { 1203 nl_ftypes = nla_nest_start(msg, ift); 1204 if (!nl_ftypes) 1205 return -ENOBUFS; 1206 i = 0; 1207 stypes = mgmt_stypes[ift].tx; 1208 while (stypes) { 1209 if ((stypes & 1) && 1210 nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE, 1211 (i << 4) | IEEE80211_FTYPE_MGMT)) 1212 return -ENOBUFS; 1213 stypes >>= 1; 1214 i++; 1215 } 1216 nla_nest_end(msg, nl_ftypes); 1217 } 1218 1219 nla_nest_end(msg, nl_ifs); 1220 1221 nl_ifs = nla_nest_start(msg, NL80211_ATTR_RX_FRAME_TYPES); 1222 if (!nl_ifs) 1223 return -ENOBUFS; 1224 1225 for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) { 1226 nl_ftypes = nla_nest_start(msg, ift); 1227 if (!nl_ftypes) 1228 return -ENOBUFS; 1229 i = 0; 1230 stypes = mgmt_stypes[ift].rx; 1231 while (stypes) { 1232 if ((stypes & 1) && 1233 nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE, 1234 (i << 4) | IEEE80211_FTYPE_MGMT)) 1235 return -ENOBUFS; 1236 stypes >>= 1; 1237 i++; 1238 } 1239 nla_nest_end(msg, nl_ftypes); 1240 } 1241 nla_nest_end(msg, nl_ifs); 1242 1243 return 0; 1244 } 1245 1246 struct nl80211_dump_wiphy_state { 1247 s64 filter_wiphy; 1248 long start; 1249 long split_start, band_start, chan_start; 1250 bool split; 1251 }; 1252 1253 static int nl80211_send_wiphy(struct cfg80211_registered_device *rdev, 1254 enum nl80211_commands cmd, 1255 struct sk_buff *msg, u32 portid, u32 seq, 1256 int flags, struct nl80211_dump_wiphy_state *state) 1257 { 1258 void *hdr; 1259 struct nlattr *nl_bands, *nl_band; 1260 struct nlattr *nl_freqs, *nl_freq; 1261 struct nlattr *nl_cmds; 1262 enum ieee80211_band band; 1263 struct ieee80211_channel *chan; 1264 int i; 1265 const struct ieee80211_txrx_stypes *mgmt_stypes = 1266 rdev->wiphy.mgmt_stypes; 1267 u32 features; 1268 1269 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd); 1270 if (!hdr) 1271 return -ENOBUFS; 1272 1273 if (WARN_ON(!state)) 1274 return -EINVAL; 1275 1276 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 1277 nla_put_string(msg, NL80211_ATTR_WIPHY_NAME, 1278 wiphy_name(&rdev->wiphy)) || 1279 nla_put_u32(msg, NL80211_ATTR_GENERATION, 1280 cfg80211_rdev_list_generation)) 1281 goto nla_put_failure; 1282 1283 if (cmd != NL80211_CMD_NEW_WIPHY) 1284 goto finish; 1285 1286 switch (state->split_start) { 1287 case 0: 1288 if (nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_SHORT, 1289 rdev->wiphy.retry_short) || 1290 nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_LONG, 1291 rdev->wiphy.retry_long) || 1292 nla_put_u32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD, 1293 rdev->wiphy.frag_threshold) || 1294 nla_put_u32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD, 1295 rdev->wiphy.rts_threshold) || 1296 nla_put_u8(msg, NL80211_ATTR_WIPHY_COVERAGE_CLASS, 1297 rdev->wiphy.coverage_class) || 1298 nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCAN_SSIDS, 1299 rdev->wiphy.max_scan_ssids) || 1300 nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS, 1301 rdev->wiphy.max_sched_scan_ssids) || 1302 nla_put_u16(msg, NL80211_ATTR_MAX_SCAN_IE_LEN, 1303 rdev->wiphy.max_scan_ie_len) || 1304 nla_put_u16(msg, NL80211_ATTR_MAX_SCHED_SCAN_IE_LEN, 1305 rdev->wiphy.max_sched_scan_ie_len) || 1306 nla_put_u8(msg, NL80211_ATTR_MAX_MATCH_SETS, 1307 rdev->wiphy.max_match_sets)) 1308 goto nla_put_failure; 1309 1310 if ((rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN) && 1311 nla_put_flag(msg, NL80211_ATTR_SUPPORT_IBSS_RSN)) 1312 goto nla_put_failure; 1313 if ((rdev->wiphy.flags & WIPHY_FLAG_MESH_AUTH) && 1314 nla_put_flag(msg, NL80211_ATTR_SUPPORT_MESH_AUTH)) 1315 goto nla_put_failure; 1316 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) && 1317 nla_put_flag(msg, NL80211_ATTR_SUPPORT_AP_UAPSD)) 1318 goto nla_put_failure; 1319 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_FW_ROAM) && 1320 nla_put_flag(msg, NL80211_ATTR_ROAM_SUPPORT)) 1321 goto nla_put_failure; 1322 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) && 1323 nla_put_flag(msg, NL80211_ATTR_TDLS_SUPPORT)) 1324 goto nla_put_failure; 1325 if ((rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP) && 1326 nla_put_flag(msg, NL80211_ATTR_TDLS_EXTERNAL_SETUP)) 1327 goto nla_put_failure; 1328 state->split_start++; 1329 if (state->split) 1330 break; 1331 case 1: 1332 if (nla_put(msg, NL80211_ATTR_CIPHER_SUITES, 1333 sizeof(u32) * rdev->wiphy.n_cipher_suites, 1334 rdev->wiphy.cipher_suites)) 1335 goto nla_put_failure; 1336 1337 if (nla_put_u8(msg, NL80211_ATTR_MAX_NUM_PMKIDS, 1338 rdev->wiphy.max_num_pmkids)) 1339 goto nla_put_failure; 1340 1341 if ((rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) && 1342 nla_put_flag(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE)) 1343 goto nla_put_failure; 1344 1345 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_TX, 1346 rdev->wiphy.available_antennas_tx) || 1347 nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_RX, 1348 rdev->wiphy.available_antennas_rx)) 1349 goto nla_put_failure; 1350 1351 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD) && 1352 nla_put_u32(msg, NL80211_ATTR_PROBE_RESP_OFFLOAD, 1353 rdev->wiphy.probe_resp_offload)) 1354 goto nla_put_failure; 1355 1356 if ((rdev->wiphy.available_antennas_tx || 1357 rdev->wiphy.available_antennas_rx) && 1358 rdev->ops->get_antenna) { 1359 u32 tx_ant = 0, rx_ant = 0; 1360 int res; 1361 res = rdev_get_antenna(rdev, &tx_ant, &rx_ant); 1362 if (!res) { 1363 if (nla_put_u32(msg, 1364 NL80211_ATTR_WIPHY_ANTENNA_TX, 1365 tx_ant) || 1366 nla_put_u32(msg, 1367 NL80211_ATTR_WIPHY_ANTENNA_RX, 1368 rx_ant)) 1369 goto nla_put_failure; 1370 } 1371 } 1372 1373 state->split_start++; 1374 if (state->split) 1375 break; 1376 case 2: 1377 if (nl80211_put_iftypes(msg, NL80211_ATTR_SUPPORTED_IFTYPES, 1378 rdev->wiphy.interface_modes)) 1379 goto nla_put_failure; 1380 state->split_start++; 1381 if (state->split) 1382 break; 1383 case 3: 1384 nl_bands = nla_nest_start(msg, NL80211_ATTR_WIPHY_BANDS); 1385 if (!nl_bands) 1386 goto nla_put_failure; 1387 1388 for (band = state->band_start; 1389 band < IEEE80211_NUM_BANDS; band++) { 1390 struct ieee80211_supported_band *sband; 1391 1392 sband = rdev->wiphy.bands[band]; 1393 1394 if (!sband) 1395 continue; 1396 1397 nl_band = nla_nest_start(msg, band); 1398 if (!nl_band) 1399 goto nla_put_failure; 1400 1401 switch (state->chan_start) { 1402 case 0: 1403 if (nl80211_send_band_rateinfo(msg, sband)) 1404 goto nla_put_failure; 1405 state->chan_start++; 1406 if (state->split) 1407 break; 1408 default: 1409 /* add frequencies */ 1410 nl_freqs = nla_nest_start( 1411 msg, NL80211_BAND_ATTR_FREQS); 1412 if (!nl_freqs) 1413 goto nla_put_failure; 1414 1415 for (i = state->chan_start - 1; 1416 i < sband->n_channels; 1417 i++) { 1418 nl_freq = nla_nest_start(msg, i); 1419 if (!nl_freq) 1420 goto nla_put_failure; 1421 1422 chan = &sband->channels[i]; 1423 1424 if (nl80211_msg_put_channel( 1425 msg, chan, 1426 state->split)) 1427 goto nla_put_failure; 1428 1429 nla_nest_end(msg, nl_freq); 1430 if (state->split) 1431 break; 1432 } 1433 if (i < sband->n_channels) 1434 state->chan_start = i + 2; 1435 else 1436 state->chan_start = 0; 1437 nla_nest_end(msg, nl_freqs); 1438 } 1439 1440 nla_nest_end(msg, nl_band); 1441 1442 if (state->split) { 1443 /* start again here */ 1444 if (state->chan_start) 1445 band--; 1446 break; 1447 } 1448 } 1449 nla_nest_end(msg, nl_bands); 1450 1451 if (band < IEEE80211_NUM_BANDS) 1452 state->band_start = band + 1; 1453 else 1454 state->band_start = 0; 1455 1456 /* if bands & channels are done, continue outside */ 1457 if (state->band_start == 0 && state->chan_start == 0) 1458 state->split_start++; 1459 if (state->split) 1460 break; 1461 case 4: 1462 nl_cmds = nla_nest_start(msg, NL80211_ATTR_SUPPORTED_COMMANDS); 1463 if (!nl_cmds) 1464 goto nla_put_failure; 1465 1466 i = 0; 1467 #define CMD(op, n) \ 1468 do { \ 1469 if (rdev->ops->op) { \ 1470 i++; \ 1471 if (nla_put_u32(msg, i, NL80211_CMD_ ## n)) \ 1472 goto nla_put_failure; \ 1473 } \ 1474 } while (0) 1475 1476 CMD(add_virtual_intf, NEW_INTERFACE); 1477 CMD(change_virtual_intf, SET_INTERFACE); 1478 CMD(add_key, NEW_KEY); 1479 CMD(start_ap, START_AP); 1480 CMD(add_station, NEW_STATION); 1481 CMD(add_mpath, NEW_MPATH); 1482 CMD(update_mesh_config, SET_MESH_CONFIG); 1483 CMD(change_bss, SET_BSS); 1484 CMD(auth, AUTHENTICATE); 1485 CMD(assoc, ASSOCIATE); 1486 CMD(deauth, DEAUTHENTICATE); 1487 CMD(disassoc, DISASSOCIATE); 1488 CMD(join_ibss, JOIN_IBSS); 1489 CMD(join_mesh, JOIN_MESH); 1490 CMD(set_pmksa, SET_PMKSA); 1491 CMD(del_pmksa, DEL_PMKSA); 1492 CMD(flush_pmksa, FLUSH_PMKSA); 1493 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL) 1494 CMD(remain_on_channel, REMAIN_ON_CHANNEL); 1495 CMD(set_bitrate_mask, SET_TX_BITRATE_MASK); 1496 CMD(mgmt_tx, FRAME); 1497 CMD(mgmt_tx_cancel_wait, FRAME_WAIT_CANCEL); 1498 if (rdev->wiphy.flags & WIPHY_FLAG_NETNS_OK) { 1499 i++; 1500 if (nla_put_u32(msg, i, NL80211_CMD_SET_WIPHY_NETNS)) 1501 goto nla_put_failure; 1502 } 1503 if (rdev->ops->set_monitor_channel || rdev->ops->start_ap || 1504 rdev->ops->join_mesh) { 1505 i++; 1506 if (nla_put_u32(msg, i, NL80211_CMD_SET_CHANNEL)) 1507 goto nla_put_failure; 1508 } 1509 CMD(set_wds_peer, SET_WDS_PEER); 1510 if (rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) { 1511 CMD(tdls_mgmt, TDLS_MGMT); 1512 CMD(tdls_oper, TDLS_OPER); 1513 } 1514 if (rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) 1515 CMD(sched_scan_start, START_SCHED_SCAN); 1516 CMD(probe_client, PROBE_CLIENT); 1517 CMD(set_noack_map, SET_NOACK_MAP); 1518 if (rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS) { 1519 i++; 1520 if (nla_put_u32(msg, i, NL80211_CMD_REGISTER_BEACONS)) 1521 goto nla_put_failure; 1522 } 1523 CMD(start_p2p_device, START_P2P_DEVICE); 1524 CMD(set_mcast_rate, SET_MCAST_RATE); 1525 #ifdef CONFIG_NL80211_TESTMODE 1526 CMD(testmode_cmd, TESTMODE); 1527 #endif 1528 if (state->split) { 1529 CMD(crit_proto_start, CRIT_PROTOCOL_START); 1530 CMD(crit_proto_stop, CRIT_PROTOCOL_STOP); 1531 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH) 1532 CMD(channel_switch, CHANNEL_SWITCH); 1533 CMD(set_qos_map, SET_QOS_MAP); 1534 if (rdev->wiphy.features & 1535 NL80211_FEATURE_SUPPORTS_WMM_ADMISSION) 1536 CMD(add_tx_ts, ADD_TX_TS); 1537 } 1538 /* add into the if now */ 1539 #undef CMD 1540 1541 if (rdev->ops->connect || rdev->ops->auth) { 1542 i++; 1543 if (nla_put_u32(msg, i, NL80211_CMD_CONNECT)) 1544 goto nla_put_failure; 1545 } 1546 1547 if (rdev->ops->disconnect || rdev->ops->deauth) { 1548 i++; 1549 if (nla_put_u32(msg, i, NL80211_CMD_DISCONNECT)) 1550 goto nla_put_failure; 1551 } 1552 1553 nla_nest_end(msg, nl_cmds); 1554 state->split_start++; 1555 if (state->split) 1556 break; 1557 case 5: 1558 if (rdev->ops->remain_on_channel && 1559 (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL) && 1560 nla_put_u32(msg, 1561 NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION, 1562 rdev->wiphy.max_remain_on_channel_duration)) 1563 goto nla_put_failure; 1564 1565 if ((rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX) && 1566 nla_put_flag(msg, NL80211_ATTR_OFFCHANNEL_TX_OK)) 1567 goto nla_put_failure; 1568 1569 if (nl80211_send_mgmt_stypes(msg, mgmt_stypes)) 1570 goto nla_put_failure; 1571 state->split_start++; 1572 if (state->split) 1573 break; 1574 case 6: 1575 #ifdef CONFIG_PM 1576 if (nl80211_send_wowlan(msg, rdev, state->split)) 1577 goto nla_put_failure; 1578 state->split_start++; 1579 if (state->split) 1580 break; 1581 #else 1582 state->split_start++; 1583 #endif 1584 case 7: 1585 if (nl80211_put_iftypes(msg, NL80211_ATTR_SOFTWARE_IFTYPES, 1586 rdev->wiphy.software_iftypes)) 1587 goto nla_put_failure; 1588 1589 if (nl80211_put_iface_combinations(&rdev->wiphy, msg, 1590 state->split)) 1591 goto nla_put_failure; 1592 1593 state->split_start++; 1594 if (state->split) 1595 break; 1596 case 8: 1597 if ((rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME) && 1598 nla_put_u32(msg, NL80211_ATTR_DEVICE_AP_SME, 1599 rdev->wiphy.ap_sme_capa)) 1600 goto nla_put_failure; 1601 1602 features = rdev->wiphy.features; 1603 /* 1604 * We can only add the per-channel limit information if the 1605 * dump is split, otherwise it makes it too big. Therefore 1606 * only advertise it in that case. 1607 */ 1608 if (state->split) 1609 features |= NL80211_FEATURE_ADVERTISE_CHAN_LIMITS; 1610 if (nla_put_u32(msg, NL80211_ATTR_FEATURE_FLAGS, features)) 1611 goto nla_put_failure; 1612 1613 if (rdev->wiphy.ht_capa_mod_mask && 1614 nla_put(msg, NL80211_ATTR_HT_CAPABILITY_MASK, 1615 sizeof(*rdev->wiphy.ht_capa_mod_mask), 1616 rdev->wiphy.ht_capa_mod_mask)) 1617 goto nla_put_failure; 1618 1619 if (rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME && 1620 rdev->wiphy.max_acl_mac_addrs && 1621 nla_put_u32(msg, NL80211_ATTR_MAC_ACL_MAX, 1622 rdev->wiphy.max_acl_mac_addrs)) 1623 goto nla_put_failure; 1624 1625 /* 1626 * Any information below this point is only available to 1627 * applications that can deal with it being split. This 1628 * helps ensure that newly added capabilities don't break 1629 * older tools by overrunning their buffers. 1630 * 1631 * We still increment split_start so that in the split 1632 * case we'll continue with more data in the next round, 1633 * but break unconditionally so unsplit data stops here. 1634 */ 1635 state->split_start++; 1636 break; 1637 case 9: 1638 if (rdev->wiphy.extended_capabilities && 1639 (nla_put(msg, NL80211_ATTR_EXT_CAPA, 1640 rdev->wiphy.extended_capabilities_len, 1641 rdev->wiphy.extended_capabilities) || 1642 nla_put(msg, NL80211_ATTR_EXT_CAPA_MASK, 1643 rdev->wiphy.extended_capabilities_len, 1644 rdev->wiphy.extended_capabilities_mask))) 1645 goto nla_put_failure; 1646 1647 if (rdev->wiphy.vht_capa_mod_mask && 1648 nla_put(msg, NL80211_ATTR_VHT_CAPABILITY_MASK, 1649 sizeof(*rdev->wiphy.vht_capa_mod_mask), 1650 rdev->wiphy.vht_capa_mod_mask)) 1651 goto nla_put_failure; 1652 1653 state->split_start++; 1654 break; 1655 case 10: 1656 if (nl80211_send_coalesce(msg, rdev)) 1657 goto nla_put_failure; 1658 1659 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ) && 1660 (nla_put_flag(msg, NL80211_ATTR_SUPPORT_5_MHZ) || 1661 nla_put_flag(msg, NL80211_ATTR_SUPPORT_10_MHZ))) 1662 goto nla_put_failure; 1663 1664 if (rdev->wiphy.max_ap_assoc_sta && 1665 nla_put_u32(msg, NL80211_ATTR_MAX_AP_ASSOC_STA, 1666 rdev->wiphy.max_ap_assoc_sta)) 1667 goto nla_put_failure; 1668 1669 state->split_start++; 1670 break; 1671 case 11: 1672 if (rdev->wiphy.n_vendor_commands) { 1673 const struct nl80211_vendor_cmd_info *info; 1674 struct nlattr *nested; 1675 1676 nested = nla_nest_start(msg, NL80211_ATTR_VENDOR_DATA); 1677 if (!nested) 1678 goto nla_put_failure; 1679 1680 for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) { 1681 info = &rdev->wiphy.vendor_commands[i].info; 1682 if (nla_put(msg, i + 1, sizeof(*info), info)) 1683 goto nla_put_failure; 1684 } 1685 nla_nest_end(msg, nested); 1686 } 1687 1688 if (rdev->wiphy.n_vendor_events) { 1689 const struct nl80211_vendor_cmd_info *info; 1690 struct nlattr *nested; 1691 1692 nested = nla_nest_start(msg, 1693 NL80211_ATTR_VENDOR_EVENTS); 1694 if (!nested) 1695 goto nla_put_failure; 1696 1697 for (i = 0; i < rdev->wiphy.n_vendor_events; i++) { 1698 info = &rdev->wiphy.vendor_events[i]; 1699 if (nla_put(msg, i + 1, sizeof(*info), info)) 1700 goto nla_put_failure; 1701 } 1702 nla_nest_end(msg, nested); 1703 } 1704 state->split_start++; 1705 break; 1706 case 12: 1707 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH && 1708 nla_put_u8(msg, NL80211_ATTR_MAX_CSA_COUNTERS, 1709 rdev->wiphy.max_num_csa_counters)) 1710 goto nla_put_failure; 1711 1712 if (rdev->wiphy.regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED && 1713 nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG)) 1714 goto nla_put_failure; 1715 1716 if (nla_put(msg, NL80211_ATTR_EXT_FEATURES, 1717 sizeof(rdev->wiphy.ext_features), 1718 rdev->wiphy.ext_features)) 1719 goto nla_put_failure; 1720 1721 /* done */ 1722 state->split_start = 0; 1723 break; 1724 } 1725 finish: 1726 genlmsg_end(msg, hdr); 1727 return 0; 1728 1729 nla_put_failure: 1730 genlmsg_cancel(msg, hdr); 1731 return -EMSGSIZE; 1732 } 1733 1734 static int nl80211_dump_wiphy_parse(struct sk_buff *skb, 1735 struct netlink_callback *cb, 1736 struct nl80211_dump_wiphy_state *state) 1737 { 1738 struct nlattr **tb = nl80211_fam.attrbuf; 1739 int ret = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize, 1740 tb, nl80211_fam.maxattr, nl80211_policy); 1741 /* ignore parse errors for backward compatibility */ 1742 if (ret) 1743 return 0; 1744 1745 state->split = tb[NL80211_ATTR_SPLIT_WIPHY_DUMP]; 1746 if (tb[NL80211_ATTR_WIPHY]) 1747 state->filter_wiphy = nla_get_u32(tb[NL80211_ATTR_WIPHY]); 1748 if (tb[NL80211_ATTR_WDEV]) 1749 state->filter_wiphy = nla_get_u64(tb[NL80211_ATTR_WDEV]) >> 32; 1750 if (tb[NL80211_ATTR_IFINDEX]) { 1751 struct net_device *netdev; 1752 struct cfg80211_registered_device *rdev; 1753 int ifidx = nla_get_u32(tb[NL80211_ATTR_IFINDEX]); 1754 1755 netdev = __dev_get_by_index(sock_net(skb->sk), ifidx); 1756 if (!netdev) 1757 return -ENODEV; 1758 if (netdev->ieee80211_ptr) { 1759 rdev = wiphy_to_rdev( 1760 netdev->ieee80211_ptr->wiphy); 1761 state->filter_wiphy = rdev->wiphy_idx; 1762 } 1763 } 1764 1765 return 0; 1766 } 1767 1768 static int nl80211_dump_wiphy(struct sk_buff *skb, struct netlink_callback *cb) 1769 { 1770 int idx = 0, ret; 1771 struct nl80211_dump_wiphy_state *state = (void *)cb->args[0]; 1772 struct cfg80211_registered_device *rdev; 1773 1774 rtnl_lock(); 1775 if (!state) { 1776 state = kzalloc(sizeof(*state), GFP_KERNEL); 1777 if (!state) { 1778 rtnl_unlock(); 1779 return -ENOMEM; 1780 } 1781 state->filter_wiphy = -1; 1782 ret = nl80211_dump_wiphy_parse(skb, cb, state); 1783 if (ret) { 1784 kfree(state); 1785 rtnl_unlock(); 1786 return ret; 1787 } 1788 cb->args[0] = (long)state; 1789 } 1790 1791 list_for_each_entry(rdev, &cfg80211_rdev_list, list) { 1792 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk))) 1793 continue; 1794 if (++idx <= state->start) 1795 continue; 1796 if (state->filter_wiphy != -1 && 1797 state->filter_wiphy != rdev->wiphy_idx) 1798 continue; 1799 /* attempt to fit multiple wiphy data chunks into the skb */ 1800 do { 1801 ret = nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY, 1802 skb, 1803 NETLINK_CB(cb->skb).portid, 1804 cb->nlh->nlmsg_seq, 1805 NLM_F_MULTI, state); 1806 if (ret < 0) { 1807 /* 1808 * If sending the wiphy data didn't fit (ENOBUFS 1809 * or EMSGSIZE returned), this SKB is still 1810 * empty (so it's not too big because another 1811 * wiphy dataset is already in the skb) and 1812 * we've not tried to adjust the dump allocation 1813 * yet ... then adjust the alloc size to be 1814 * bigger, and return 1 but with the empty skb. 1815 * This results in an empty message being RX'ed 1816 * in userspace, but that is ignored. 1817 * 1818 * We can then retry with the larger buffer. 1819 */ 1820 if ((ret == -ENOBUFS || ret == -EMSGSIZE) && 1821 !skb->len && !state->split && 1822 cb->min_dump_alloc < 4096) { 1823 cb->min_dump_alloc = 4096; 1824 state->split_start = 0; 1825 rtnl_unlock(); 1826 return 1; 1827 } 1828 idx--; 1829 break; 1830 } 1831 } while (state->split_start > 0); 1832 break; 1833 } 1834 rtnl_unlock(); 1835 1836 state->start = idx; 1837 1838 return skb->len; 1839 } 1840 1841 static int nl80211_dump_wiphy_done(struct netlink_callback *cb) 1842 { 1843 kfree((void *)cb->args[0]); 1844 return 0; 1845 } 1846 1847 static int nl80211_get_wiphy(struct sk_buff *skb, struct genl_info *info) 1848 { 1849 struct sk_buff *msg; 1850 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 1851 struct nl80211_dump_wiphy_state state = {}; 1852 1853 msg = nlmsg_new(4096, GFP_KERNEL); 1854 if (!msg) 1855 return -ENOMEM; 1856 1857 if (nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY, msg, 1858 info->snd_portid, info->snd_seq, 0, 1859 &state) < 0) { 1860 nlmsg_free(msg); 1861 return -ENOBUFS; 1862 } 1863 1864 return genlmsg_reply(msg, info); 1865 } 1866 1867 static const struct nla_policy txq_params_policy[NL80211_TXQ_ATTR_MAX + 1] = { 1868 [NL80211_TXQ_ATTR_QUEUE] = { .type = NLA_U8 }, 1869 [NL80211_TXQ_ATTR_TXOP] = { .type = NLA_U16 }, 1870 [NL80211_TXQ_ATTR_CWMIN] = { .type = NLA_U16 }, 1871 [NL80211_TXQ_ATTR_CWMAX] = { .type = NLA_U16 }, 1872 [NL80211_TXQ_ATTR_AIFS] = { .type = NLA_U8 }, 1873 }; 1874 1875 static int parse_txq_params(struct nlattr *tb[], 1876 struct ieee80211_txq_params *txq_params) 1877 { 1878 if (!tb[NL80211_TXQ_ATTR_AC] || !tb[NL80211_TXQ_ATTR_TXOP] || 1879 !tb[NL80211_TXQ_ATTR_CWMIN] || !tb[NL80211_TXQ_ATTR_CWMAX] || 1880 !tb[NL80211_TXQ_ATTR_AIFS]) 1881 return -EINVAL; 1882 1883 txq_params->ac = nla_get_u8(tb[NL80211_TXQ_ATTR_AC]); 1884 txq_params->txop = nla_get_u16(tb[NL80211_TXQ_ATTR_TXOP]); 1885 txq_params->cwmin = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMIN]); 1886 txq_params->cwmax = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMAX]); 1887 txq_params->aifs = nla_get_u8(tb[NL80211_TXQ_ATTR_AIFS]); 1888 1889 if (txq_params->ac >= NL80211_NUM_ACS) 1890 return -EINVAL; 1891 1892 return 0; 1893 } 1894 1895 static bool nl80211_can_set_dev_channel(struct wireless_dev *wdev) 1896 { 1897 /* 1898 * You can only set the channel explicitly for WDS interfaces, 1899 * all others have their channel managed via their respective 1900 * "establish a connection" command (connect, join, ...) 1901 * 1902 * For AP/GO and mesh mode, the channel can be set with the 1903 * channel userspace API, but is only stored and passed to the 1904 * low-level driver when the AP starts or the mesh is joined. 1905 * This is for backward compatibility, userspace can also give 1906 * the channel in the start-ap or join-mesh commands instead. 1907 * 1908 * Monitors are special as they are normally slaved to 1909 * whatever else is going on, so they have their own special 1910 * operation to set the monitor channel if possible. 1911 */ 1912 return !wdev || 1913 wdev->iftype == NL80211_IFTYPE_AP || 1914 wdev->iftype == NL80211_IFTYPE_MESH_POINT || 1915 wdev->iftype == NL80211_IFTYPE_MONITOR || 1916 wdev->iftype == NL80211_IFTYPE_P2P_GO; 1917 } 1918 1919 static int nl80211_parse_chandef(struct cfg80211_registered_device *rdev, 1920 struct genl_info *info, 1921 struct cfg80211_chan_def *chandef) 1922 { 1923 u32 control_freq; 1924 1925 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ]) 1926 return -EINVAL; 1927 1928 control_freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]); 1929 1930 chandef->chan = ieee80211_get_channel(&rdev->wiphy, control_freq); 1931 chandef->width = NL80211_CHAN_WIDTH_20_NOHT; 1932 chandef->center_freq1 = control_freq; 1933 chandef->center_freq2 = 0; 1934 1935 /* Primary channel not allowed */ 1936 if (!chandef->chan || chandef->chan->flags & IEEE80211_CHAN_DISABLED) 1937 return -EINVAL; 1938 1939 if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) { 1940 enum nl80211_channel_type chantype; 1941 1942 chantype = nla_get_u32( 1943 info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]); 1944 1945 switch (chantype) { 1946 case NL80211_CHAN_NO_HT: 1947 case NL80211_CHAN_HT20: 1948 case NL80211_CHAN_HT40PLUS: 1949 case NL80211_CHAN_HT40MINUS: 1950 cfg80211_chandef_create(chandef, chandef->chan, 1951 chantype); 1952 break; 1953 default: 1954 return -EINVAL; 1955 } 1956 } else if (info->attrs[NL80211_ATTR_CHANNEL_WIDTH]) { 1957 chandef->width = 1958 nla_get_u32(info->attrs[NL80211_ATTR_CHANNEL_WIDTH]); 1959 if (info->attrs[NL80211_ATTR_CENTER_FREQ1]) 1960 chandef->center_freq1 = 1961 nla_get_u32( 1962 info->attrs[NL80211_ATTR_CENTER_FREQ1]); 1963 if (info->attrs[NL80211_ATTR_CENTER_FREQ2]) 1964 chandef->center_freq2 = 1965 nla_get_u32( 1966 info->attrs[NL80211_ATTR_CENTER_FREQ2]); 1967 } 1968 1969 if (!cfg80211_chandef_valid(chandef)) 1970 return -EINVAL; 1971 1972 if (!cfg80211_chandef_usable(&rdev->wiphy, chandef, 1973 IEEE80211_CHAN_DISABLED)) 1974 return -EINVAL; 1975 1976 if ((chandef->width == NL80211_CHAN_WIDTH_5 || 1977 chandef->width == NL80211_CHAN_WIDTH_10) && 1978 !(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ)) 1979 return -EINVAL; 1980 1981 return 0; 1982 } 1983 1984 static int __nl80211_set_channel(struct cfg80211_registered_device *rdev, 1985 struct net_device *dev, 1986 struct genl_info *info) 1987 { 1988 struct cfg80211_chan_def chandef; 1989 int result; 1990 enum nl80211_iftype iftype = NL80211_IFTYPE_MONITOR; 1991 struct wireless_dev *wdev = NULL; 1992 1993 if (dev) 1994 wdev = dev->ieee80211_ptr; 1995 if (!nl80211_can_set_dev_channel(wdev)) 1996 return -EOPNOTSUPP; 1997 if (wdev) 1998 iftype = wdev->iftype; 1999 2000 result = nl80211_parse_chandef(rdev, info, &chandef); 2001 if (result) 2002 return result; 2003 2004 switch (iftype) { 2005 case NL80211_IFTYPE_AP: 2006 case NL80211_IFTYPE_P2P_GO: 2007 if (!cfg80211_reg_can_beacon(&rdev->wiphy, &chandef, iftype)) { 2008 result = -EINVAL; 2009 break; 2010 } 2011 if (wdev->beacon_interval) { 2012 if (!dev || !rdev->ops->set_ap_chanwidth || 2013 !(rdev->wiphy.features & 2014 NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE)) { 2015 result = -EBUSY; 2016 break; 2017 } 2018 2019 /* Only allow dynamic channel width changes */ 2020 if (chandef.chan != wdev->preset_chandef.chan) { 2021 result = -EBUSY; 2022 break; 2023 } 2024 result = rdev_set_ap_chanwidth(rdev, dev, &chandef); 2025 if (result) 2026 break; 2027 } 2028 wdev->preset_chandef = chandef; 2029 result = 0; 2030 break; 2031 case NL80211_IFTYPE_MESH_POINT: 2032 result = cfg80211_set_mesh_channel(rdev, wdev, &chandef); 2033 break; 2034 case NL80211_IFTYPE_MONITOR: 2035 result = cfg80211_set_monitor_channel(rdev, &chandef); 2036 break; 2037 default: 2038 result = -EINVAL; 2039 } 2040 2041 return result; 2042 } 2043 2044 static int nl80211_set_channel(struct sk_buff *skb, struct genl_info *info) 2045 { 2046 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 2047 struct net_device *netdev = info->user_ptr[1]; 2048 2049 return __nl80211_set_channel(rdev, netdev, info); 2050 } 2051 2052 static int nl80211_set_wds_peer(struct sk_buff *skb, struct genl_info *info) 2053 { 2054 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 2055 struct net_device *dev = info->user_ptr[1]; 2056 struct wireless_dev *wdev = dev->ieee80211_ptr; 2057 const u8 *bssid; 2058 2059 if (!info->attrs[NL80211_ATTR_MAC]) 2060 return -EINVAL; 2061 2062 if (netif_running(dev)) 2063 return -EBUSY; 2064 2065 if (!rdev->ops->set_wds_peer) 2066 return -EOPNOTSUPP; 2067 2068 if (wdev->iftype != NL80211_IFTYPE_WDS) 2069 return -EOPNOTSUPP; 2070 2071 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]); 2072 return rdev_set_wds_peer(rdev, dev, bssid); 2073 } 2074 2075 2076 static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info) 2077 { 2078 struct cfg80211_registered_device *rdev; 2079 struct net_device *netdev = NULL; 2080 struct wireless_dev *wdev; 2081 int result = 0, rem_txq_params = 0; 2082 struct nlattr *nl_txq_params; 2083 u32 changed; 2084 u8 retry_short = 0, retry_long = 0; 2085 u32 frag_threshold = 0, rts_threshold = 0; 2086 u8 coverage_class = 0; 2087 2088 ASSERT_RTNL(); 2089 2090 /* 2091 * Try to find the wiphy and netdev. Normally this 2092 * function shouldn't need the netdev, but this is 2093 * done for backward compatibility -- previously 2094 * setting the channel was done per wiphy, but now 2095 * it is per netdev. Previous userland like hostapd 2096 * also passed a netdev to set_wiphy, so that it is 2097 * possible to let that go to the right netdev! 2098 */ 2099 2100 if (info->attrs[NL80211_ATTR_IFINDEX]) { 2101 int ifindex = nla_get_u32(info->attrs[NL80211_ATTR_IFINDEX]); 2102 2103 netdev = __dev_get_by_index(genl_info_net(info), ifindex); 2104 if (netdev && netdev->ieee80211_ptr) 2105 rdev = wiphy_to_rdev(netdev->ieee80211_ptr->wiphy); 2106 else 2107 netdev = NULL; 2108 } 2109 2110 if (!netdev) { 2111 rdev = __cfg80211_rdev_from_attrs(genl_info_net(info), 2112 info->attrs); 2113 if (IS_ERR(rdev)) 2114 return PTR_ERR(rdev); 2115 wdev = NULL; 2116 netdev = NULL; 2117 result = 0; 2118 } else 2119 wdev = netdev->ieee80211_ptr; 2120 2121 /* 2122 * end workaround code, by now the rdev is available 2123 * and locked, and wdev may or may not be NULL. 2124 */ 2125 2126 if (info->attrs[NL80211_ATTR_WIPHY_NAME]) 2127 result = cfg80211_dev_rename( 2128 rdev, nla_data(info->attrs[NL80211_ATTR_WIPHY_NAME])); 2129 2130 if (result) 2131 return result; 2132 2133 if (info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS]) { 2134 struct ieee80211_txq_params txq_params; 2135 struct nlattr *tb[NL80211_TXQ_ATTR_MAX + 1]; 2136 2137 if (!rdev->ops->set_txq_params) 2138 return -EOPNOTSUPP; 2139 2140 if (!netdev) 2141 return -EINVAL; 2142 2143 if (netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP && 2144 netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) 2145 return -EINVAL; 2146 2147 if (!netif_running(netdev)) 2148 return -ENETDOWN; 2149 2150 nla_for_each_nested(nl_txq_params, 2151 info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS], 2152 rem_txq_params) { 2153 result = nla_parse(tb, NL80211_TXQ_ATTR_MAX, 2154 nla_data(nl_txq_params), 2155 nla_len(nl_txq_params), 2156 txq_params_policy); 2157 if (result) 2158 return result; 2159 result = parse_txq_params(tb, &txq_params); 2160 if (result) 2161 return result; 2162 2163 result = rdev_set_txq_params(rdev, netdev, 2164 &txq_params); 2165 if (result) 2166 return result; 2167 } 2168 } 2169 2170 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) { 2171 result = __nl80211_set_channel( 2172 rdev, 2173 nl80211_can_set_dev_channel(wdev) ? netdev : NULL, 2174 info); 2175 if (result) 2176 return result; 2177 } 2178 2179 if (info->attrs[NL80211_ATTR_WIPHY_TX_POWER_SETTING]) { 2180 struct wireless_dev *txp_wdev = wdev; 2181 enum nl80211_tx_power_setting type; 2182 int idx, mbm = 0; 2183 2184 if (!(rdev->wiphy.features & NL80211_FEATURE_VIF_TXPOWER)) 2185 txp_wdev = NULL; 2186 2187 if (!rdev->ops->set_tx_power) 2188 return -EOPNOTSUPP; 2189 2190 idx = NL80211_ATTR_WIPHY_TX_POWER_SETTING; 2191 type = nla_get_u32(info->attrs[idx]); 2192 2193 if (!info->attrs[NL80211_ATTR_WIPHY_TX_POWER_LEVEL] && 2194 (type != NL80211_TX_POWER_AUTOMATIC)) 2195 return -EINVAL; 2196 2197 if (type != NL80211_TX_POWER_AUTOMATIC) { 2198 idx = NL80211_ATTR_WIPHY_TX_POWER_LEVEL; 2199 mbm = nla_get_u32(info->attrs[idx]); 2200 } 2201 2202 result = rdev_set_tx_power(rdev, txp_wdev, type, mbm); 2203 if (result) 2204 return result; 2205 } 2206 2207 if (info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX] && 2208 info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]) { 2209 u32 tx_ant, rx_ant; 2210 if ((!rdev->wiphy.available_antennas_tx && 2211 !rdev->wiphy.available_antennas_rx) || 2212 !rdev->ops->set_antenna) 2213 return -EOPNOTSUPP; 2214 2215 tx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX]); 2216 rx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]); 2217 2218 /* reject antenna configurations which don't match the 2219 * available antenna masks, except for the "all" mask */ 2220 if ((~tx_ant && (tx_ant & ~rdev->wiphy.available_antennas_tx)) || 2221 (~rx_ant && (rx_ant & ~rdev->wiphy.available_antennas_rx))) 2222 return -EINVAL; 2223 2224 tx_ant = tx_ant & rdev->wiphy.available_antennas_tx; 2225 rx_ant = rx_ant & rdev->wiphy.available_antennas_rx; 2226 2227 result = rdev_set_antenna(rdev, tx_ant, rx_ant); 2228 if (result) 2229 return result; 2230 } 2231 2232 changed = 0; 2233 2234 if (info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]) { 2235 retry_short = nla_get_u8( 2236 info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]); 2237 if (retry_short == 0) 2238 return -EINVAL; 2239 2240 changed |= WIPHY_PARAM_RETRY_SHORT; 2241 } 2242 2243 if (info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]) { 2244 retry_long = nla_get_u8( 2245 info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]); 2246 if (retry_long == 0) 2247 return -EINVAL; 2248 2249 changed |= WIPHY_PARAM_RETRY_LONG; 2250 } 2251 2252 if (info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]) { 2253 frag_threshold = nla_get_u32( 2254 info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]); 2255 if (frag_threshold < 256) 2256 return -EINVAL; 2257 2258 if (frag_threshold != (u32) -1) { 2259 /* 2260 * Fragments (apart from the last one) are required to 2261 * have even length. Make the fragmentation code 2262 * simpler by stripping LSB should someone try to use 2263 * odd threshold value. 2264 */ 2265 frag_threshold &= ~0x1; 2266 } 2267 changed |= WIPHY_PARAM_FRAG_THRESHOLD; 2268 } 2269 2270 if (info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]) { 2271 rts_threshold = nla_get_u32( 2272 info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]); 2273 changed |= WIPHY_PARAM_RTS_THRESHOLD; 2274 } 2275 2276 if (info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]) { 2277 if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK]) 2278 return -EINVAL; 2279 2280 coverage_class = nla_get_u8( 2281 info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]); 2282 changed |= WIPHY_PARAM_COVERAGE_CLASS; 2283 } 2284 2285 if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK]) { 2286 if (!(rdev->wiphy.features & NL80211_FEATURE_ACKTO_ESTIMATION)) 2287 return -EOPNOTSUPP; 2288 2289 changed |= WIPHY_PARAM_DYN_ACK; 2290 } 2291 2292 if (changed) { 2293 u8 old_retry_short, old_retry_long; 2294 u32 old_frag_threshold, old_rts_threshold; 2295 u8 old_coverage_class; 2296 2297 if (!rdev->ops->set_wiphy_params) 2298 return -EOPNOTSUPP; 2299 2300 old_retry_short = rdev->wiphy.retry_short; 2301 old_retry_long = rdev->wiphy.retry_long; 2302 old_frag_threshold = rdev->wiphy.frag_threshold; 2303 old_rts_threshold = rdev->wiphy.rts_threshold; 2304 old_coverage_class = rdev->wiphy.coverage_class; 2305 2306 if (changed & WIPHY_PARAM_RETRY_SHORT) 2307 rdev->wiphy.retry_short = retry_short; 2308 if (changed & WIPHY_PARAM_RETRY_LONG) 2309 rdev->wiphy.retry_long = retry_long; 2310 if (changed & WIPHY_PARAM_FRAG_THRESHOLD) 2311 rdev->wiphy.frag_threshold = frag_threshold; 2312 if (changed & WIPHY_PARAM_RTS_THRESHOLD) 2313 rdev->wiphy.rts_threshold = rts_threshold; 2314 if (changed & WIPHY_PARAM_COVERAGE_CLASS) 2315 rdev->wiphy.coverage_class = coverage_class; 2316 2317 result = rdev_set_wiphy_params(rdev, changed); 2318 if (result) { 2319 rdev->wiphy.retry_short = old_retry_short; 2320 rdev->wiphy.retry_long = old_retry_long; 2321 rdev->wiphy.frag_threshold = old_frag_threshold; 2322 rdev->wiphy.rts_threshold = old_rts_threshold; 2323 rdev->wiphy.coverage_class = old_coverage_class; 2324 } 2325 } 2326 return 0; 2327 } 2328 2329 static inline u64 wdev_id(struct wireless_dev *wdev) 2330 { 2331 return (u64)wdev->identifier | 2332 ((u64)wiphy_to_rdev(wdev->wiphy)->wiphy_idx << 32); 2333 } 2334 2335 static int nl80211_send_chandef(struct sk_buff *msg, 2336 const struct cfg80211_chan_def *chandef) 2337 { 2338 if (WARN_ON(!cfg80211_chandef_valid(chandef))) 2339 return -EINVAL; 2340 2341 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, 2342 chandef->chan->center_freq)) 2343 return -ENOBUFS; 2344 switch (chandef->width) { 2345 case NL80211_CHAN_WIDTH_20_NOHT: 2346 case NL80211_CHAN_WIDTH_20: 2347 case NL80211_CHAN_WIDTH_40: 2348 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE, 2349 cfg80211_get_chandef_type(chandef))) 2350 return -ENOBUFS; 2351 break; 2352 default: 2353 break; 2354 } 2355 if (nla_put_u32(msg, NL80211_ATTR_CHANNEL_WIDTH, chandef->width)) 2356 return -ENOBUFS; 2357 if (nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ1, chandef->center_freq1)) 2358 return -ENOBUFS; 2359 if (chandef->center_freq2 && 2360 nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ2, chandef->center_freq2)) 2361 return -ENOBUFS; 2362 return 0; 2363 } 2364 2365 static int nl80211_send_iface(struct sk_buff *msg, u32 portid, u32 seq, int flags, 2366 struct cfg80211_registered_device *rdev, 2367 struct wireless_dev *wdev, bool removal) 2368 { 2369 struct net_device *dev = wdev->netdev; 2370 u8 cmd = NL80211_CMD_NEW_INTERFACE; 2371 void *hdr; 2372 2373 if (removal) 2374 cmd = NL80211_CMD_DEL_INTERFACE; 2375 2376 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd); 2377 if (!hdr) 2378 return -1; 2379 2380 if (dev && 2381 (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) || 2382 nla_put_string(msg, NL80211_ATTR_IFNAME, dev->name))) 2383 goto nla_put_failure; 2384 2385 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 2386 nla_put_u32(msg, NL80211_ATTR_IFTYPE, wdev->iftype) || 2387 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) || 2388 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, wdev_address(wdev)) || 2389 nla_put_u32(msg, NL80211_ATTR_GENERATION, 2390 rdev->devlist_generation ^ 2391 (cfg80211_rdev_list_generation << 2))) 2392 goto nla_put_failure; 2393 2394 if (rdev->ops->get_channel) { 2395 int ret; 2396 struct cfg80211_chan_def chandef; 2397 2398 ret = rdev_get_channel(rdev, wdev, &chandef); 2399 if (ret == 0) { 2400 if (nl80211_send_chandef(msg, &chandef)) 2401 goto nla_put_failure; 2402 } 2403 } 2404 2405 if (wdev->ssid_len) { 2406 if (nla_put(msg, NL80211_ATTR_SSID, wdev->ssid_len, wdev->ssid)) 2407 goto nla_put_failure; 2408 } 2409 2410 genlmsg_end(msg, hdr); 2411 return 0; 2412 2413 nla_put_failure: 2414 genlmsg_cancel(msg, hdr); 2415 return -EMSGSIZE; 2416 } 2417 2418 static int nl80211_dump_interface(struct sk_buff *skb, struct netlink_callback *cb) 2419 { 2420 int wp_idx = 0; 2421 int if_idx = 0; 2422 int wp_start = cb->args[0]; 2423 int if_start = cb->args[1]; 2424 struct cfg80211_registered_device *rdev; 2425 struct wireless_dev *wdev; 2426 2427 rtnl_lock(); 2428 list_for_each_entry(rdev, &cfg80211_rdev_list, list) { 2429 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk))) 2430 continue; 2431 if (wp_idx < wp_start) { 2432 wp_idx++; 2433 continue; 2434 } 2435 if_idx = 0; 2436 2437 list_for_each_entry(wdev, &rdev->wdev_list, list) { 2438 if (if_idx < if_start) { 2439 if_idx++; 2440 continue; 2441 } 2442 if (nl80211_send_iface(skb, NETLINK_CB(cb->skb).portid, 2443 cb->nlh->nlmsg_seq, NLM_F_MULTI, 2444 rdev, wdev, false) < 0) { 2445 goto out; 2446 } 2447 if_idx++; 2448 } 2449 2450 wp_idx++; 2451 } 2452 out: 2453 rtnl_unlock(); 2454 2455 cb->args[0] = wp_idx; 2456 cb->args[1] = if_idx; 2457 2458 return skb->len; 2459 } 2460 2461 static int nl80211_get_interface(struct sk_buff *skb, struct genl_info *info) 2462 { 2463 struct sk_buff *msg; 2464 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 2465 struct wireless_dev *wdev = info->user_ptr[1]; 2466 2467 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 2468 if (!msg) 2469 return -ENOMEM; 2470 2471 if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0, 2472 rdev, wdev, false) < 0) { 2473 nlmsg_free(msg); 2474 return -ENOBUFS; 2475 } 2476 2477 return genlmsg_reply(msg, info); 2478 } 2479 2480 static const struct nla_policy mntr_flags_policy[NL80211_MNTR_FLAG_MAX + 1] = { 2481 [NL80211_MNTR_FLAG_FCSFAIL] = { .type = NLA_FLAG }, 2482 [NL80211_MNTR_FLAG_PLCPFAIL] = { .type = NLA_FLAG }, 2483 [NL80211_MNTR_FLAG_CONTROL] = { .type = NLA_FLAG }, 2484 [NL80211_MNTR_FLAG_OTHER_BSS] = { .type = NLA_FLAG }, 2485 [NL80211_MNTR_FLAG_COOK_FRAMES] = { .type = NLA_FLAG }, 2486 [NL80211_MNTR_FLAG_ACTIVE] = { .type = NLA_FLAG }, 2487 }; 2488 2489 static int parse_monitor_flags(struct nlattr *nla, u32 *mntrflags) 2490 { 2491 struct nlattr *flags[NL80211_MNTR_FLAG_MAX + 1]; 2492 int flag; 2493 2494 *mntrflags = 0; 2495 2496 if (!nla) 2497 return -EINVAL; 2498 2499 if (nla_parse_nested(flags, NL80211_MNTR_FLAG_MAX, 2500 nla, mntr_flags_policy)) 2501 return -EINVAL; 2502 2503 for (flag = 1; flag <= NL80211_MNTR_FLAG_MAX; flag++) 2504 if (flags[flag]) 2505 *mntrflags |= (1<<flag); 2506 2507 return 0; 2508 } 2509 2510 static int nl80211_valid_4addr(struct cfg80211_registered_device *rdev, 2511 struct net_device *netdev, u8 use_4addr, 2512 enum nl80211_iftype iftype) 2513 { 2514 if (!use_4addr) { 2515 if (netdev && (netdev->priv_flags & IFF_BRIDGE_PORT)) 2516 return -EBUSY; 2517 return 0; 2518 } 2519 2520 switch (iftype) { 2521 case NL80211_IFTYPE_AP_VLAN: 2522 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_AP) 2523 return 0; 2524 break; 2525 case NL80211_IFTYPE_STATION: 2526 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_STATION) 2527 return 0; 2528 break; 2529 default: 2530 break; 2531 } 2532 2533 return -EOPNOTSUPP; 2534 } 2535 2536 static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info) 2537 { 2538 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 2539 struct vif_params params; 2540 int err; 2541 enum nl80211_iftype otype, ntype; 2542 struct net_device *dev = info->user_ptr[1]; 2543 u32 _flags, *flags = NULL; 2544 bool change = false; 2545 2546 memset(¶ms, 0, sizeof(params)); 2547 2548 otype = ntype = dev->ieee80211_ptr->iftype; 2549 2550 if (info->attrs[NL80211_ATTR_IFTYPE]) { 2551 ntype = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]); 2552 if (otype != ntype) 2553 change = true; 2554 if (ntype > NL80211_IFTYPE_MAX) 2555 return -EINVAL; 2556 } 2557 2558 if (info->attrs[NL80211_ATTR_MESH_ID]) { 2559 struct wireless_dev *wdev = dev->ieee80211_ptr; 2560 2561 if (ntype != NL80211_IFTYPE_MESH_POINT) 2562 return -EINVAL; 2563 if (netif_running(dev)) 2564 return -EBUSY; 2565 2566 wdev_lock(wdev); 2567 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN != 2568 IEEE80211_MAX_MESH_ID_LEN); 2569 wdev->mesh_id_up_len = 2570 nla_len(info->attrs[NL80211_ATTR_MESH_ID]); 2571 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]), 2572 wdev->mesh_id_up_len); 2573 wdev_unlock(wdev); 2574 } 2575 2576 if (info->attrs[NL80211_ATTR_4ADDR]) { 2577 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]); 2578 change = true; 2579 err = nl80211_valid_4addr(rdev, dev, params.use_4addr, ntype); 2580 if (err) 2581 return err; 2582 } else { 2583 params.use_4addr = -1; 2584 } 2585 2586 if (info->attrs[NL80211_ATTR_MNTR_FLAGS]) { 2587 if (ntype != NL80211_IFTYPE_MONITOR) 2588 return -EINVAL; 2589 err = parse_monitor_flags(info->attrs[NL80211_ATTR_MNTR_FLAGS], 2590 &_flags); 2591 if (err) 2592 return err; 2593 2594 flags = &_flags; 2595 change = true; 2596 } 2597 2598 if (flags && (*flags & MONITOR_FLAG_ACTIVE) && 2599 !(rdev->wiphy.features & NL80211_FEATURE_ACTIVE_MONITOR)) 2600 return -EOPNOTSUPP; 2601 2602 if (change) 2603 err = cfg80211_change_iface(rdev, dev, ntype, flags, ¶ms); 2604 else 2605 err = 0; 2606 2607 if (!err && params.use_4addr != -1) 2608 dev->ieee80211_ptr->use_4addr = params.use_4addr; 2609 2610 return err; 2611 } 2612 2613 static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info) 2614 { 2615 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 2616 struct vif_params params; 2617 struct wireless_dev *wdev; 2618 struct sk_buff *msg, *event; 2619 int err; 2620 enum nl80211_iftype type = NL80211_IFTYPE_UNSPECIFIED; 2621 u32 flags; 2622 2623 /* to avoid failing a new interface creation due to pending removal */ 2624 cfg80211_destroy_ifaces(rdev); 2625 2626 memset(¶ms, 0, sizeof(params)); 2627 2628 if (!info->attrs[NL80211_ATTR_IFNAME]) 2629 return -EINVAL; 2630 2631 if (info->attrs[NL80211_ATTR_IFTYPE]) { 2632 type = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]); 2633 if (type > NL80211_IFTYPE_MAX) 2634 return -EINVAL; 2635 } 2636 2637 if (!rdev->ops->add_virtual_intf || 2638 !(rdev->wiphy.interface_modes & (1 << type))) 2639 return -EOPNOTSUPP; 2640 2641 if ((type == NL80211_IFTYPE_P2P_DEVICE || 2642 rdev->wiphy.features & NL80211_FEATURE_MAC_ON_CREATE) && 2643 info->attrs[NL80211_ATTR_MAC]) { 2644 nla_memcpy(params.macaddr, info->attrs[NL80211_ATTR_MAC], 2645 ETH_ALEN); 2646 if (!is_valid_ether_addr(params.macaddr)) 2647 return -EADDRNOTAVAIL; 2648 } 2649 2650 if (info->attrs[NL80211_ATTR_4ADDR]) { 2651 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]); 2652 err = nl80211_valid_4addr(rdev, NULL, params.use_4addr, type); 2653 if (err) 2654 return err; 2655 } 2656 2657 err = parse_monitor_flags(type == NL80211_IFTYPE_MONITOR ? 2658 info->attrs[NL80211_ATTR_MNTR_FLAGS] : NULL, 2659 &flags); 2660 2661 if (!err && (flags & MONITOR_FLAG_ACTIVE) && 2662 !(rdev->wiphy.features & NL80211_FEATURE_ACTIVE_MONITOR)) 2663 return -EOPNOTSUPP; 2664 2665 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 2666 if (!msg) 2667 return -ENOMEM; 2668 2669 wdev = rdev_add_virtual_intf(rdev, 2670 nla_data(info->attrs[NL80211_ATTR_IFNAME]), 2671 type, err ? NULL : &flags, ¶ms); 2672 if (WARN_ON(!wdev)) { 2673 nlmsg_free(msg); 2674 return -EPROTO; 2675 } else if (IS_ERR(wdev)) { 2676 nlmsg_free(msg); 2677 return PTR_ERR(wdev); 2678 } 2679 2680 if (info->attrs[NL80211_ATTR_SOCKET_OWNER]) 2681 wdev->owner_nlportid = info->snd_portid; 2682 2683 switch (type) { 2684 case NL80211_IFTYPE_MESH_POINT: 2685 if (!info->attrs[NL80211_ATTR_MESH_ID]) 2686 break; 2687 wdev_lock(wdev); 2688 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN != 2689 IEEE80211_MAX_MESH_ID_LEN); 2690 wdev->mesh_id_up_len = 2691 nla_len(info->attrs[NL80211_ATTR_MESH_ID]); 2692 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]), 2693 wdev->mesh_id_up_len); 2694 wdev_unlock(wdev); 2695 break; 2696 case NL80211_IFTYPE_P2P_DEVICE: 2697 /* 2698 * P2P Device doesn't have a netdev, so doesn't go 2699 * through the netdev notifier and must be added here 2700 */ 2701 mutex_init(&wdev->mtx); 2702 INIT_LIST_HEAD(&wdev->event_list); 2703 spin_lock_init(&wdev->event_lock); 2704 INIT_LIST_HEAD(&wdev->mgmt_registrations); 2705 spin_lock_init(&wdev->mgmt_registrations_lock); 2706 2707 wdev->identifier = ++rdev->wdev_id; 2708 list_add_rcu(&wdev->list, &rdev->wdev_list); 2709 rdev->devlist_generation++; 2710 break; 2711 default: 2712 break; 2713 } 2714 2715 if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0, 2716 rdev, wdev, false) < 0) { 2717 nlmsg_free(msg); 2718 return -ENOBUFS; 2719 } 2720 2721 event = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 2722 if (event) { 2723 if (nl80211_send_iface(event, 0, 0, 0, 2724 rdev, wdev, false) < 0) { 2725 nlmsg_free(event); 2726 goto out; 2727 } 2728 2729 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), 2730 event, 0, NL80211_MCGRP_CONFIG, 2731 GFP_KERNEL); 2732 } 2733 2734 out: 2735 return genlmsg_reply(msg, info); 2736 } 2737 2738 static int nl80211_del_interface(struct sk_buff *skb, struct genl_info *info) 2739 { 2740 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 2741 struct wireless_dev *wdev = info->user_ptr[1]; 2742 struct sk_buff *msg; 2743 int status; 2744 2745 if (!rdev->ops->del_virtual_intf) 2746 return -EOPNOTSUPP; 2747 2748 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 2749 if (msg && nl80211_send_iface(msg, 0, 0, 0, rdev, wdev, true) < 0) { 2750 nlmsg_free(msg); 2751 msg = NULL; 2752 } 2753 2754 /* 2755 * If we remove a wireless device without a netdev then clear 2756 * user_ptr[1] so that nl80211_post_doit won't dereference it 2757 * to check if it needs to do dev_put(). Otherwise it crashes 2758 * since the wdev has been freed, unlike with a netdev where 2759 * we need the dev_put() for the netdev to really be freed. 2760 */ 2761 if (!wdev->netdev) 2762 info->user_ptr[1] = NULL; 2763 2764 status = rdev_del_virtual_intf(rdev, wdev); 2765 if (status >= 0 && msg) 2766 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), 2767 msg, 0, NL80211_MCGRP_CONFIG, 2768 GFP_KERNEL); 2769 else 2770 nlmsg_free(msg); 2771 2772 return status; 2773 } 2774 2775 static int nl80211_set_noack_map(struct sk_buff *skb, struct genl_info *info) 2776 { 2777 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 2778 struct net_device *dev = info->user_ptr[1]; 2779 u16 noack_map; 2780 2781 if (!info->attrs[NL80211_ATTR_NOACK_MAP]) 2782 return -EINVAL; 2783 2784 if (!rdev->ops->set_noack_map) 2785 return -EOPNOTSUPP; 2786 2787 noack_map = nla_get_u16(info->attrs[NL80211_ATTR_NOACK_MAP]); 2788 2789 return rdev_set_noack_map(rdev, dev, noack_map); 2790 } 2791 2792 struct get_key_cookie { 2793 struct sk_buff *msg; 2794 int error; 2795 int idx; 2796 }; 2797 2798 static void get_key_callback(void *c, struct key_params *params) 2799 { 2800 struct nlattr *key; 2801 struct get_key_cookie *cookie = c; 2802 2803 if ((params->key && 2804 nla_put(cookie->msg, NL80211_ATTR_KEY_DATA, 2805 params->key_len, params->key)) || 2806 (params->seq && 2807 nla_put(cookie->msg, NL80211_ATTR_KEY_SEQ, 2808 params->seq_len, params->seq)) || 2809 (params->cipher && 2810 nla_put_u32(cookie->msg, NL80211_ATTR_KEY_CIPHER, 2811 params->cipher))) 2812 goto nla_put_failure; 2813 2814 key = nla_nest_start(cookie->msg, NL80211_ATTR_KEY); 2815 if (!key) 2816 goto nla_put_failure; 2817 2818 if ((params->key && 2819 nla_put(cookie->msg, NL80211_KEY_DATA, 2820 params->key_len, params->key)) || 2821 (params->seq && 2822 nla_put(cookie->msg, NL80211_KEY_SEQ, 2823 params->seq_len, params->seq)) || 2824 (params->cipher && 2825 nla_put_u32(cookie->msg, NL80211_KEY_CIPHER, 2826 params->cipher))) 2827 goto nla_put_failure; 2828 2829 if (nla_put_u8(cookie->msg, NL80211_ATTR_KEY_IDX, cookie->idx)) 2830 goto nla_put_failure; 2831 2832 nla_nest_end(cookie->msg, key); 2833 2834 return; 2835 nla_put_failure: 2836 cookie->error = 1; 2837 } 2838 2839 static int nl80211_get_key(struct sk_buff *skb, struct genl_info *info) 2840 { 2841 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 2842 int err; 2843 struct net_device *dev = info->user_ptr[1]; 2844 u8 key_idx = 0; 2845 const u8 *mac_addr = NULL; 2846 bool pairwise; 2847 struct get_key_cookie cookie = { 2848 .error = 0, 2849 }; 2850 void *hdr; 2851 struct sk_buff *msg; 2852 2853 if (info->attrs[NL80211_ATTR_KEY_IDX]) 2854 key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]); 2855 2856 if (key_idx > 5) 2857 return -EINVAL; 2858 2859 if (info->attrs[NL80211_ATTR_MAC]) 2860 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]); 2861 2862 pairwise = !!mac_addr; 2863 if (info->attrs[NL80211_ATTR_KEY_TYPE]) { 2864 u32 kt = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]); 2865 if (kt >= NUM_NL80211_KEYTYPES) 2866 return -EINVAL; 2867 if (kt != NL80211_KEYTYPE_GROUP && 2868 kt != NL80211_KEYTYPE_PAIRWISE) 2869 return -EINVAL; 2870 pairwise = kt == NL80211_KEYTYPE_PAIRWISE; 2871 } 2872 2873 if (!rdev->ops->get_key) 2874 return -EOPNOTSUPP; 2875 2876 if (!pairwise && mac_addr && !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN)) 2877 return -ENOENT; 2878 2879 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 2880 if (!msg) 2881 return -ENOMEM; 2882 2883 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0, 2884 NL80211_CMD_NEW_KEY); 2885 if (!hdr) 2886 goto nla_put_failure; 2887 2888 cookie.msg = msg; 2889 cookie.idx = key_idx; 2890 2891 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) || 2892 nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_idx)) 2893 goto nla_put_failure; 2894 if (mac_addr && 2895 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr)) 2896 goto nla_put_failure; 2897 2898 err = rdev_get_key(rdev, dev, key_idx, pairwise, mac_addr, &cookie, 2899 get_key_callback); 2900 2901 if (err) 2902 goto free_msg; 2903 2904 if (cookie.error) 2905 goto nla_put_failure; 2906 2907 genlmsg_end(msg, hdr); 2908 return genlmsg_reply(msg, info); 2909 2910 nla_put_failure: 2911 err = -ENOBUFS; 2912 free_msg: 2913 nlmsg_free(msg); 2914 return err; 2915 } 2916 2917 static int nl80211_set_key(struct sk_buff *skb, struct genl_info *info) 2918 { 2919 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 2920 struct key_parse key; 2921 int err; 2922 struct net_device *dev = info->user_ptr[1]; 2923 2924 err = nl80211_parse_key(info, &key); 2925 if (err) 2926 return err; 2927 2928 if (key.idx < 0) 2929 return -EINVAL; 2930 2931 /* only support setting default key */ 2932 if (!key.def && !key.defmgmt) 2933 return -EINVAL; 2934 2935 wdev_lock(dev->ieee80211_ptr); 2936 2937 if (key.def) { 2938 if (!rdev->ops->set_default_key) { 2939 err = -EOPNOTSUPP; 2940 goto out; 2941 } 2942 2943 err = nl80211_key_allowed(dev->ieee80211_ptr); 2944 if (err) 2945 goto out; 2946 2947 err = rdev_set_default_key(rdev, dev, key.idx, 2948 key.def_uni, key.def_multi); 2949 2950 if (err) 2951 goto out; 2952 2953 #ifdef CONFIG_CFG80211_WEXT 2954 dev->ieee80211_ptr->wext.default_key = key.idx; 2955 #endif 2956 } else { 2957 if (key.def_uni || !key.def_multi) { 2958 err = -EINVAL; 2959 goto out; 2960 } 2961 2962 if (!rdev->ops->set_default_mgmt_key) { 2963 err = -EOPNOTSUPP; 2964 goto out; 2965 } 2966 2967 err = nl80211_key_allowed(dev->ieee80211_ptr); 2968 if (err) 2969 goto out; 2970 2971 err = rdev_set_default_mgmt_key(rdev, dev, key.idx); 2972 if (err) 2973 goto out; 2974 2975 #ifdef CONFIG_CFG80211_WEXT 2976 dev->ieee80211_ptr->wext.default_mgmt_key = key.idx; 2977 #endif 2978 } 2979 2980 out: 2981 wdev_unlock(dev->ieee80211_ptr); 2982 2983 return err; 2984 } 2985 2986 static int nl80211_new_key(struct sk_buff *skb, struct genl_info *info) 2987 { 2988 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 2989 int err; 2990 struct net_device *dev = info->user_ptr[1]; 2991 struct key_parse key; 2992 const u8 *mac_addr = NULL; 2993 2994 err = nl80211_parse_key(info, &key); 2995 if (err) 2996 return err; 2997 2998 if (!key.p.key) 2999 return -EINVAL; 3000 3001 if (info->attrs[NL80211_ATTR_MAC]) 3002 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]); 3003 3004 if (key.type == -1) { 3005 if (mac_addr) 3006 key.type = NL80211_KEYTYPE_PAIRWISE; 3007 else 3008 key.type = NL80211_KEYTYPE_GROUP; 3009 } 3010 3011 /* for now */ 3012 if (key.type != NL80211_KEYTYPE_PAIRWISE && 3013 key.type != NL80211_KEYTYPE_GROUP) 3014 return -EINVAL; 3015 3016 if (!rdev->ops->add_key) 3017 return -EOPNOTSUPP; 3018 3019 if (cfg80211_validate_key_settings(rdev, &key.p, key.idx, 3020 key.type == NL80211_KEYTYPE_PAIRWISE, 3021 mac_addr)) 3022 return -EINVAL; 3023 3024 wdev_lock(dev->ieee80211_ptr); 3025 err = nl80211_key_allowed(dev->ieee80211_ptr); 3026 if (!err) 3027 err = rdev_add_key(rdev, dev, key.idx, 3028 key.type == NL80211_KEYTYPE_PAIRWISE, 3029 mac_addr, &key.p); 3030 wdev_unlock(dev->ieee80211_ptr); 3031 3032 return err; 3033 } 3034 3035 static int nl80211_del_key(struct sk_buff *skb, struct genl_info *info) 3036 { 3037 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 3038 int err; 3039 struct net_device *dev = info->user_ptr[1]; 3040 u8 *mac_addr = NULL; 3041 struct key_parse key; 3042 3043 err = nl80211_parse_key(info, &key); 3044 if (err) 3045 return err; 3046 3047 if (info->attrs[NL80211_ATTR_MAC]) 3048 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]); 3049 3050 if (key.type == -1) { 3051 if (mac_addr) 3052 key.type = NL80211_KEYTYPE_PAIRWISE; 3053 else 3054 key.type = NL80211_KEYTYPE_GROUP; 3055 } 3056 3057 /* for now */ 3058 if (key.type != NL80211_KEYTYPE_PAIRWISE && 3059 key.type != NL80211_KEYTYPE_GROUP) 3060 return -EINVAL; 3061 3062 if (!rdev->ops->del_key) 3063 return -EOPNOTSUPP; 3064 3065 wdev_lock(dev->ieee80211_ptr); 3066 err = nl80211_key_allowed(dev->ieee80211_ptr); 3067 3068 if (key.type == NL80211_KEYTYPE_GROUP && mac_addr && 3069 !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN)) 3070 err = -ENOENT; 3071 3072 if (!err) 3073 err = rdev_del_key(rdev, dev, key.idx, 3074 key.type == NL80211_KEYTYPE_PAIRWISE, 3075 mac_addr); 3076 3077 #ifdef CONFIG_CFG80211_WEXT 3078 if (!err) { 3079 if (key.idx == dev->ieee80211_ptr->wext.default_key) 3080 dev->ieee80211_ptr->wext.default_key = -1; 3081 else if (key.idx == dev->ieee80211_ptr->wext.default_mgmt_key) 3082 dev->ieee80211_ptr->wext.default_mgmt_key = -1; 3083 } 3084 #endif 3085 wdev_unlock(dev->ieee80211_ptr); 3086 3087 return err; 3088 } 3089 3090 /* This function returns an error or the number of nested attributes */ 3091 static int validate_acl_mac_addrs(struct nlattr *nl_attr) 3092 { 3093 struct nlattr *attr; 3094 int n_entries = 0, tmp; 3095 3096 nla_for_each_nested(attr, nl_attr, tmp) { 3097 if (nla_len(attr) != ETH_ALEN) 3098 return -EINVAL; 3099 3100 n_entries++; 3101 } 3102 3103 return n_entries; 3104 } 3105 3106 /* 3107 * This function parses ACL information and allocates memory for ACL data. 3108 * On successful return, the calling function is responsible to free the 3109 * ACL buffer returned by this function. 3110 */ 3111 static struct cfg80211_acl_data *parse_acl_data(struct wiphy *wiphy, 3112 struct genl_info *info) 3113 { 3114 enum nl80211_acl_policy acl_policy; 3115 struct nlattr *attr; 3116 struct cfg80211_acl_data *acl; 3117 int i = 0, n_entries, tmp; 3118 3119 if (!wiphy->max_acl_mac_addrs) 3120 return ERR_PTR(-EOPNOTSUPP); 3121 3122 if (!info->attrs[NL80211_ATTR_ACL_POLICY]) 3123 return ERR_PTR(-EINVAL); 3124 3125 acl_policy = nla_get_u32(info->attrs[NL80211_ATTR_ACL_POLICY]); 3126 if (acl_policy != NL80211_ACL_POLICY_ACCEPT_UNLESS_LISTED && 3127 acl_policy != NL80211_ACL_POLICY_DENY_UNLESS_LISTED) 3128 return ERR_PTR(-EINVAL); 3129 3130 if (!info->attrs[NL80211_ATTR_MAC_ADDRS]) 3131 return ERR_PTR(-EINVAL); 3132 3133 n_entries = validate_acl_mac_addrs(info->attrs[NL80211_ATTR_MAC_ADDRS]); 3134 if (n_entries < 0) 3135 return ERR_PTR(n_entries); 3136 3137 if (n_entries > wiphy->max_acl_mac_addrs) 3138 return ERR_PTR(-ENOTSUPP); 3139 3140 acl = kzalloc(sizeof(*acl) + (sizeof(struct mac_address) * n_entries), 3141 GFP_KERNEL); 3142 if (!acl) 3143 return ERR_PTR(-ENOMEM); 3144 3145 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_MAC_ADDRS], tmp) { 3146 memcpy(acl->mac_addrs[i].addr, nla_data(attr), ETH_ALEN); 3147 i++; 3148 } 3149 3150 acl->n_acl_entries = n_entries; 3151 acl->acl_policy = acl_policy; 3152 3153 return acl; 3154 } 3155 3156 static int nl80211_set_mac_acl(struct sk_buff *skb, struct genl_info *info) 3157 { 3158 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 3159 struct net_device *dev = info->user_ptr[1]; 3160 struct cfg80211_acl_data *acl; 3161 int err; 3162 3163 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP && 3164 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) 3165 return -EOPNOTSUPP; 3166 3167 if (!dev->ieee80211_ptr->beacon_interval) 3168 return -EINVAL; 3169 3170 acl = parse_acl_data(&rdev->wiphy, info); 3171 if (IS_ERR(acl)) 3172 return PTR_ERR(acl); 3173 3174 err = rdev_set_mac_acl(rdev, dev, acl); 3175 3176 kfree(acl); 3177 3178 return err; 3179 } 3180 3181 static int nl80211_parse_beacon(struct nlattr *attrs[], 3182 struct cfg80211_beacon_data *bcn) 3183 { 3184 bool haveinfo = false; 3185 3186 if (!is_valid_ie_attr(attrs[NL80211_ATTR_BEACON_TAIL]) || 3187 !is_valid_ie_attr(attrs[NL80211_ATTR_IE]) || 3188 !is_valid_ie_attr(attrs[NL80211_ATTR_IE_PROBE_RESP]) || 3189 !is_valid_ie_attr(attrs[NL80211_ATTR_IE_ASSOC_RESP])) 3190 return -EINVAL; 3191 3192 memset(bcn, 0, sizeof(*bcn)); 3193 3194 if (attrs[NL80211_ATTR_BEACON_HEAD]) { 3195 bcn->head = nla_data(attrs[NL80211_ATTR_BEACON_HEAD]); 3196 bcn->head_len = nla_len(attrs[NL80211_ATTR_BEACON_HEAD]); 3197 if (!bcn->head_len) 3198 return -EINVAL; 3199 haveinfo = true; 3200 } 3201 3202 if (attrs[NL80211_ATTR_BEACON_TAIL]) { 3203 bcn->tail = nla_data(attrs[NL80211_ATTR_BEACON_TAIL]); 3204 bcn->tail_len = nla_len(attrs[NL80211_ATTR_BEACON_TAIL]); 3205 haveinfo = true; 3206 } 3207 3208 if (!haveinfo) 3209 return -EINVAL; 3210 3211 if (attrs[NL80211_ATTR_IE]) { 3212 bcn->beacon_ies = nla_data(attrs[NL80211_ATTR_IE]); 3213 bcn->beacon_ies_len = nla_len(attrs[NL80211_ATTR_IE]); 3214 } 3215 3216 if (attrs[NL80211_ATTR_IE_PROBE_RESP]) { 3217 bcn->proberesp_ies = 3218 nla_data(attrs[NL80211_ATTR_IE_PROBE_RESP]); 3219 bcn->proberesp_ies_len = 3220 nla_len(attrs[NL80211_ATTR_IE_PROBE_RESP]); 3221 } 3222 3223 if (attrs[NL80211_ATTR_IE_ASSOC_RESP]) { 3224 bcn->assocresp_ies = 3225 nla_data(attrs[NL80211_ATTR_IE_ASSOC_RESP]); 3226 bcn->assocresp_ies_len = 3227 nla_len(attrs[NL80211_ATTR_IE_ASSOC_RESP]); 3228 } 3229 3230 if (attrs[NL80211_ATTR_PROBE_RESP]) { 3231 bcn->probe_resp = nla_data(attrs[NL80211_ATTR_PROBE_RESP]); 3232 bcn->probe_resp_len = nla_len(attrs[NL80211_ATTR_PROBE_RESP]); 3233 } 3234 3235 return 0; 3236 } 3237 3238 static bool nl80211_get_ap_channel(struct cfg80211_registered_device *rdev, 3239 struct cfg80211_ap_settings *params) 3240 { 3241 struct wireless_dev *wdev; 3242 bool ret = false; 3243 3244 list_for_each_entry(wdev, &rdev->wdev_list, list) { 3245 if (wdev->iftype != NL80211_IFTYPE_AP && 3246 wdev->iftype != NL80211_IFTYPE_P2P_GO) 3247 continue; 3248 3249 if (!wdev->preset_chandef.chan) 3250 continue; 3251 3252 params->chandef = wdev->preset_chandef; 3253 ret = true; 3254 break; 3255 } 3256 3257 return ret; 3258 } 3259 3260 static bool nl80211_valid_auth_type(struct cfg80211_registered_device *rdev, 3261 enum nl80211_auth_type auth_type, 3262 enum nl80211_commands cmd) 3263 { 3264 if (auth_type > NL80211_AUTHTYPE_MAX) 3265 return false; 3266 3267 switch (cmd) { 3268 case NL80211_CMD_AUTHENTICATE: 3269 if (!(rdev->wiphy.features & NL80211_FEATURE_SAE) && 3270 auth_type == NL80211_AUTHTYPE_SAE) 3271 return false; 3272 return true; 3273 case NL80211_CMD_CONNECT: 3274 case NL80211_CMD_START_AP: 3275 /* SAE not supported yet */ 3276 if (auth_type == NL80211_AUTHTYPE_SAE) 3277 return false; 3278 return true; 3279 default: 3280 return false; 3281 } 3282 } 3283 3284 static int nl80211_start_ap(struct sk_buff *skb, struct genl_info *info) 3285 { 3286 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 3287 struct net_device *dev = info->user_ptr[1]; 3288 struct wireless_dev *wdev = dev->ieee80211_ptr; 3289 struct cfg80211_ap_settings params; 3290 int err; 3291 3292 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP && 3293 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) 3294 return -EOPNOTSUPP; 3295 3296 if (!rdev->ops->start_ap) 3297 return -EOPNOTSUPP; 3298 3299 if (wdev->beacon_interval) 3300 return -EALREADY; 3301 3302 memset(¶ms, 0, sizeof(params)); 3303 3304 /* these are required for START_AP */ 3305 if (!info->attrs[NL80211_ATTR_BEACON_INTERVAL] || 3306 !info->attrs[NL80211_ATTR_DTIM_PERIOD] || 3307 !info->attrs[NL80211_ATTR_BEACON_HEAD]) 3308 return -EINVAL; 3309 3310 err = nl80211_parse_beacon(info->attrs, ¶ms.beacon); 3311 if (err) 3312 return err; 3313 3314 params.beacon_interval = 3315 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]); 3316 params.dtim_period = 3317 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]); 3318 3319 err = cfg80211_validate_beacon_int(rdev, params.beacon_interval); 3320 if (err) 3321 return err; 3322 3323 /* 3324 * In theory, some of these attributes should be required here 3325 * but since they were not used when the command was originally 3326 * added, keep them optional for old user space programs to let 3327 * them continue to work with drivers that do not need the 3328 * additional information -- drivers must check! 3329 */ 3330 if (info->attrs[NL80211_ATTR_SSID]) { 3331 params.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]); 3332 params.ssid_len = 3333 nla_len(info->attrs[NL80211_ATTR_SSID]); 3334 if (params.ssid_len == 0 || 3335 params.ssid_len > IEEE80211_MAX_SSID_LEN) 3336 return -EINVAL; 3337 } 3338 3339 if (info->attrs[NL80211_ATTR_HIDDEN_SSID]) { 3340 params.hidden_ssid = nla_get_u32( 3341 info->attrs[NL80211_ATTR_HIDDEN_SSID]); 3342 if (params.hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE && 3343 params.hidden_ssid != NL80211_HIDDEN_SSID_ZERO_LEN && 3344 params.hidden_ssid != NL80211_HIDDEN_SSID_ZERO_CONTENTS) 3345 return -EINVAL; 3346 } 3347 3348 params.privacy = !!info->attrs[NL80211_ATTR_PRIVACY]; 3349 3350 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) { 3351 params.auth_type = nla_get_u32( 3352 info->attrs[NL80211_ATTR_AUTH_TYPE]); 3353 if (!nl80211_valid_auth_type(rdev, params.auth_type, 3354 NL80211_CMD_START_AP)) 3355 return -EINVAL; 3356 } else 3357 params.auth_type = NL80211_AUTHTYPE_AUTOMATIC; 3358 3359 err = nl80211_crypto_settings(rdev, info, ¶ms.crypto, 3360 NL80211_MAX_NR_CIPHER_SUITES); 3361 if (err) 3362 return err; 3363 3364 if (info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]) { 3365 if (!(rdev->wiphy.features & NL80211_FEATURE_INACTIVITY_TIMER)) 3366 return -EOPNOTSUPP; 3367 params.inactivity_timeout = nla_get_u16( 3368 info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]); 3369 } 3370 3371 if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) { 3372 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) 3373 return -EINVAL; 3374 params.p2p_ctwindow = 3375 nla_get_u8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]); 3376 if (params.p2p_ctwindow > 127) 3377 return -EINVAL; 3378 if (params.p2p_ctwindow != 0 && 3379 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN)) 3380 return -EINVAL; 3381 } 3382 3383 if (info->attrs[NL80211_ATTR_P2P_OPPPS]) { 3384 u8 tmp; 3385 3386 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) 3387 return -EINVAL; 3388 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]); 3389 if (tmp > 1) 3390 return -EINVAL; 3391 params.p2p_opp_ps = tmp; 3392 if (params.p2p_opp_ps != 0 && 3393 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS)) 3394 return -EINVAL; 3395 } 3396 3397 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) { 3398 err = nl80211_parse_chandef(rdev, info, ¶ms.chandef); 3399 if (err) 3400 return err; 3401 } else if (wdev->preset_chandef.chan) { 3402 params.chandef = wdev->preset_chandef; 3403 } else if (!nl80211_get_ap_channel(rdev, ¶ms)) 3404 return -EINVAL; 3405 3406 if (!cfg80211_reg_can_beacon(&rdev->wiphy, ¶ms.chandef, 3407 wdev->iftype)) 3408 return -EINVAL; 3409 3410 if (info->attrs[NL80211_ATTR_ACL_POLICY]) { 3411 params.acl = parse_acl_data(&rdev->wiphy, info); 3412 if (IS_ERR(params.acl)) 3413 return PTR_ERR(params.acl); 3414 } 3415 3416 if (info->attrs[NL80211_ATTR_SMPS_MODE]) { 3417 params.smps_mode = 3418 nla_get_u8(info->attrs[NL80211_ATTR_SMPS_MODE]); 3419 switch (params.smps_mode) { 3420 case NL80211_SMPS_OFF: 3421 break; 3422 case NL80211_SMPS_STATIC: 3423 if (!(rdev->wiphy.features & 3424 NL80211_FEATURE_STATIC_SMPS)) 3425 return -EINVAL; 3426 break; 3427 case NL80211_SMPS_DYNAMIC: 3428 if (!(rdev->wiphy.features & 3429 NL80211_FEATURE_DYNAMIC_SMPS)) 3430 return -EINVAL; 3431 break; 3432 default: 3433 return -EINVAL; 3434 } 3435 } else { 3436 params.smps_mode = NL80211_SMPS_OFF; 3437 } 3438 3439 wdev_lock(wdev); 3440 err = rdev_start_ap(rdev, dev, ¶ms); 3441 if (!err) { 3442 wdev->preset_chandef = params.chandef; 3443 wdev->beacon_interval = params.beacon_interval; 3444 wdev->chandef = params.chandef; 3445 wdev->ssid_len = params.ssid_len; 3446 memcpy(wdev->ssid, params.ssid, wdev->ssid_len); 3447 } 3448 wdev_unlock(wdev); 3449 3450 kfree(params.acl); 3451 3452 return err; 3453 } 3454 3455 static int nl80211_set_beacon(struct sk_buff *skb, struct genl_info *info) 3456 { 3457 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 3458 struct net_device *dev = info->user_ptr[1]; 3459 struct wireless_dev *wdev = dev->ieee80211_ptr; 3460 struct cfg80211_beacon_data params; 3461 int err; 3462 3463 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP && 3464 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) 3465 return -EOPNOTSUPP; 3466 3467 if (!rdev->ops->change_beacon) 3468 return -EOPNOTSUPP; 3469 3470 if (!wdev->beacon_interval) 3471 return -EINVAL; 3472 3473 err = nl80211_parse_beacon(info->attrs, ¶ms); 3474 if (err) 3475 return err; 3476 3477 wdev_lock(wdev); 3478 err = rdev_change_beacon(rdev, dev, ¶ms); 3479 wdev_unlock(wdev); 3480 3481 return err; 3482 } 3483 3484 static int nl80211_stop_ap(struct sk_buff *skb, struct genl_info *info) 3485 { 3486 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 3487 struct net_device *dev = info->user_ptr[1]; 3488 3489 return cfg80211_stop_ap(rdev, dev, false); 3490 } 3491 3492 static const struct nla_policy sta_flags_policy[NL80211_STA_FLAG_MAX + 1] = { 3493 [NL80211_STA_FLAG_AUTHORIZED] = { .type = NLA_FLAG }, 3494 [NL80211_STA_FLAG_SHORT_PREAMBLE] = { .type = NLA_FLAG }, 3495 [NL80211_STA_FLAG_WME] = { .type = NLA_FLAG }, 3496 [NL80211_STA_FLAG_MFP] = { .type = NLA_FLAG }, 3497 [NL80211_STA_FLAG_AUTHENTICATED] = { .type = NLA_FLAG }, 3498 [NL80211_STA_FLAG_TDLS_PEER] = { .type = NLA_FLAG }, 3499 }; 3500 3501 static int parse_station_flags(struct genl_info *info, 3502 enum nl80211_iftype iftype, 3503 struct station_parameters *params) 3504 { 3505 struct nlattr *flags[NL80211_STA_FLAG_MAX + 1]; 3506 struct nlattr *nla; 3507 int flag; 3508 3509 /* 3510 * Try parsing the new attribute first so userspace 3511 * can specify both for older kernels. 3512 */ 3513 nla = info->attrs[NL80211_ATTR_STA_FLAGS2]; 3514 if (nla) { 3515 struct nl80211_sta_flag_update *sta_flags; 3516 3517 sta_flags = nla_data(nla); 3518 params->sta_flags_mask = sta_flags->mask; 3519 params->sta_flags_set = sta_flags->set; 3520 params->sta_flags_set &= params->sta_flags_mask; 3521 if ((params->sta_flags_mask | 3522 params->sta_flags_set) & BIT(__NL80211_STA_FLAG_INVALID)) 3523 return -EINVAL; 3524 return 0; 3525 } 3526 3527 /* if present, parse the old attribute */ 3528 3529 nla = info->attrs[NL80211_ATTR_STA_FLAGS]; 3530 if (!nla) 3531 return 0; 3532 3533 if (nla_parse_nested(flags, NL80211_STA_FLAG_MAX, 3534 nla, sta_flags_policy)) 3535 return -EINVAL; 3536 3537 /* 3538 * Only allow certain flags for interface types so that 3539 * other attributes are silently ignored. Remember that 3540 * this is backward compatibility code with old userspace 3541 * and shouldn't be hit in other cases anyway. 3542 */ 3543 switch (iftype) { 3544 case NL80211_IFTYPE_AP: 3545 case NL80211_IFTYPE_AP_VLAN: 3546 case NL80211_IFTYPE_P2P_GO: 3547 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) | 3548 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) | 3549 BIT(NL80211_STA_FLAG_WME) | 3550 BIT(NL80211_STA_FLAG_MFP); 3551 break; 3552 case NL80211_IFTYPE_P2P_CLIENT: 3553 case NL80211_IFTYPE_STATION: 3554 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) | 3555 BIT(NL80211_STA_FLAG_TDLS_PEER); 3556 break; 3557 case NL80211_IFTYPE_MESH_POINT: 3558 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHENTICATED) | 3559 BIT(NL80211_STA_FLAG_MFP) | 3560 BIT(NL80211_STA_FLAG_AUTHORIZED); 3561 default: 3562 return -EINVAL; 3563 } 3564 3565 for (flag = 1; flag <= NL80211_STA_FLAG_MAX; flag++) { 3566 if (flags[flag]) { 3567 params->sta_flags_set |= (1<<flag); 3568 3569 /* no longer support new API additions in old API */ 3570 if (flag > NL80211_STA_FLAG_MAX_OLD_API) 3571 return -EINVAL; 3572 } 3573 } 3574 3575 return 0; 3576 } 3577 3578 static bool nl80211_put_sta_rate(struct sk_buff *msg, struct rate_info *info, 3579 int attr) 3580 { 3581 struct nlattr *rate; 3582 u32 bitrate; 3583 u16 bitrate_compat; 3584 enum nl80211_attrs rate_flg; 3585 3586 rate = nla_nest_start(msg, attr); 3587 if (!rate) 3588 return false; 3589 3590 /* cfg80211_calculate_bitrate will return 0 for mcs >= 32 */ 3591 bitrate = cfg80211_calculate_bitrate(info); 3592 /* report 16-bit bitrate only if we can */ 3593 bitrate_compat = bitrate < (1UL << 16) ? bitrate : 0; 3594 if (bitrate > 0 && 3595 nla_put_u32(msg, NL80211_RATE_INFO_BITRATE32, bitrate)) 3596 return false; 3597 if (bitrate_compat > 0 && 3598 nla_put_u16(msg, NL80211_RATE_INFO_BITRATE, bitrate_compat)) 3599 return false; 3600 3601 switch (info->bw) { 3602 case RATE_INFO_BW_5: 3603 rate_flg = NL80211_RATE_INFO_5_MHZ_WIDTH; 3604 break; 3605 case RATE_INFO_BW_10: 3606 rate_flg = NL80211_RATE_INFO_10_MHZ_WIDTH; 3607 break; 3608 default: 3609 WARN_ON(1); 3610 /* fall through */ 3611 case RATE_INFO_BW_20: 3612 rate_flg = 0; 3613 break; 3614 case RATE_INFO_BW_40: 3615 rate_flg = NL80211_RATE_INFO_40_MHZ_WIDTH; 3616 break; 3617 case RATE_INFO_BW_80: 3618 rate_flg = NL80211_RATE_INFO_80_MHZ_WIDTH; 3619 break; 3620 case RATE_INFO_BW_160: 3621 rate_flg = NL80211_RATE_INFO_160_MHZ_WIDTH; 3622 break; 3623 } 3624 3625 if (rate_flg && nla_put_flag(msg, rate_flg)) 3626 return false; 3627 3628 if (info->flags & RATE_INFO_FLAGS_MCS) { 3629 if (nla_put_u8(msg, NL80211_RATE_INFO_MCS, info->mcs)) 3630 return false; 3631 if (info->flags & RATE_INFO_FLAGS_SHORT_GI && 3632 nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI)) 3633 return false; 3634 } else if (info->flags & RATE_INFO_FLAGS_VHT_MCS) { 3635 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_MCS, info->mcs)) 3636 return false; 3637 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_NSS, info->nss)) 3638 return false; 3639 if (info->flags & RATE_INFO_FLAGS_SHORT_GI && 3640 nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI)) 3641 return false; 3642 } 3643 3644 nla_nest_end(msg, rate); 3645 return true; 3646 } 3647 3648 static bool nl80211_put_signal(struct sk_buff *msg, u8 mask, s8 *signal, 3649 int id) 3650 { 3651 void *attr; 3652 int i = 0; 3653 3654 if (!mask) 3655 return true; 3656 3657 attr = nla_nest_start(msg, id); 3658 if (!attr) 3659 return false; 3660 3661 for (i = 0; i < IEEE80211_MAX_CHAINS; i++) { 3662 if (!(mask & BIT(i))) 3663 continue; 3664 3665 if (nla_put_u8(msg, i, signal[i])) 3666 return false; 3667 } 3668 3669 nla_nest_end(msg, attr); 3670 3671 return true; 3672 } 3673 3674 static int nl80211_send_station(struct sk_buff *msg, u32 cmd, u32 portid, 3675 u32 seq, int flags, 3676 struct cfg80211_registered_device *rdev, 3677 struct net_device *dev, 3678 const u8 *mac_addr, struct station_info *sinfo) 3679 { 3680 void *hdr; 3681 struct nlattr *sinfoattr, *bss_param; 3682 3683 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd); 3684 if (!hdr) 3685 return -1; 3686 3687 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) || 3688 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) || 3689 nla_put_u32(msg, NL80211_ATTR_GENERATION, sinfo->generation)) 3690 goto nla_put_failure; 3691 3692 sinfoattr = nla_nest_start(msg, NL80211_ATTR_STA_INFO); 3693 if (!sinfoattr) 3694 goto nla_put_failure; 3695 3696 #define PUT_SINFO(attr, memb, type) do { \ 3697 if (sinfo->filled & BIT(NL80211_STA_INFO_ ## attr) && \ 3698 nla_put_ ## type(msg, NL80211_STA_INFO_ ## attr, \ 3699 sinfo->memb)) \ 3700 goto nla_put_failure; \ 3701 } while (0) 3702 3703 PUT_SINFO(CONNECTED_TIME, connected_time, u32); 3704 PUT_SINFO(INACTIVE_TIME, inactive_time, u32); 3705 3706 if (sinfo->filled & (BIT(NL80211_STA_INFO_RX_BYTES) | 3707 BIT(NL80211_STA_INFO_RX_BYTES64)) && 3708 nla_put_u32(msg, NL80211_STA_INFO_RX_BYTES, 3709 (u32)sinfo->rx_bytes)) 3710 goto nla_put_failure; 3711 3712 if (sinfo->filled & (BIT(NL80211_STA_INFO_TX_BYTES) | 3713 BIT(NL80211_STA_INFO_TX_BYTES64)) && 3714 nla_put_u32(msg, NL80211_STA_INFO_TX_BYTES, 3715 (u32)sinfo->tx_bytes)) 3716 goto nla_put_failure; 3717 3718 PUT_SINFO(RX_BYTES64, rx_bytes, u64); 3719 PUT_SINFO(TX_BYTES64, tx_bytes, u64); 3720 PUT_SINFO(LLID, llid, u16); 3721 PUT_SINFO(PLID, plid, u16); 3722 PUT_SINFO(PLINK_STATE, plink_state, u8); 3723 3724 switch (rdev->wiphy.signal_type) { 3725 case CFG80211_SIGNAL_TYPE_MBM: 3726 PUT_SINFO(SIGNAL, signal, u8); 3727 PUT_SINFO(SIGNAL_AVG, signal_avg, u8); 3728 break; 3729 default: 3730 break; 3731 } 3732 if (sinfo->filled & BIT(NL80211_STA_INFO_CHAIN_SIGNAL)) { 3733 if (!nl80211_put_signal(msg, sinfo->chains, 3734 sinfo->chain_signal, 3735 NL80211_STA_INFO_CHAIN_SIGNAL)) 3736 goto nla_put_failure; 3737 } 3738 if (sinfo->filled & BIT(NL80211_STA_INFO_CHAIN_SIGNAL_AVG)) { 3739 if (!nl80211_put_signal(msg, sinfo->chains, 3740 sinfo->chain_signal_avg, 3741 NL80211_STA_INFO_CHAIN_SIGNAL_AVG)) 3742 goto nla_put_failure; 3743 } 3744 if (sinfo->filled & BIT(NL80211_STA_INFO_TX_BITRATE)) { 3745 if (!nl80211_put_sta_rate(msg, &sinfo->txrate, 3746 NL80211_STA_INFO_TX_BITRATE)) 3747 goto nla_put_failure; 3748 } 3749 if (sinfo->filled & BIT(NL80211_STA_INFO_RX_BITRATE)) { 3750 if (!nl80211_put_sta_rate(msg, &sinfo->rxrate, 3751 NL80211_STA_INFO_RX_BITRATE)) 3752 goto nla_put_failure; 3753 } 3754 3755 PUT_SINFO(RX_PACKETS, rx_packets, u32); 3756 PUT_SINFO(TX_PACKETS, tx_packets, u32); 3757 PUT_SINFO(TX_RETRIES, tx_retries, u32); 3758 PUT_SINFO(TX_FAILED, tx_failed, u32); 3759 PUT_SINFO(EXPECTED_THROUGHPUT, expected_throughput, u32); 3760 PUT_SINFO(BEACON_LOSS, beacon_loss_count, u32); 3761 PUT_SINFO(LOCAL_PM, local_pm, u32); 3762 PUT_SINFO(PEER_PM, peer_pm, u32); 3763 PUT_SINFO(NONPEER_PM, nonpeer_pm, u32); 3764 3765 if (sinfo->filled & BIT(NL80211_STA_INFO_BSS_PARAM)) { 3766 bss_param = nla_nest_start(msg, NL80211_STA_INFO_BSS_PARAM); 3767 if (!bss_param) 3768 goto nla_put_failure; 3769 3770 if (((sinfo->bss_param.flags & BSS_PARAM_FLAGS_CTS_PROT) && 3771 nla_put_flag(msg, NL80211_STA_BSS_PARAM_CTS_PROT)) || 3772 ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_PREAMBLE) && 3773 nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_PREAMBLE)) || 3774 ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_SLOT_TIME) && 3775 nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_SLOT_TIME)) || 3776 nla_put_u8(msg, NL80211_STA_BSS_PARAM_DTIM_PERIOD, 3777 sinfo->bss_param.dtim_period) || 3778 nla_put_u16(msg, NL80211_STA_BSS_PARAM_BEACON_INTERVAL, 3779 sinfo->bss_param.beacon_interval)) 3780 goto nla_put_failure; 3781 3782 nla_nest_end(msg, bss_param); 3783 } 3784 if ((sinfo->filled & BIT(NL80211_STA_INFO_STA_FLAGS)) && 3785 nla_put(msg, NL80211_STA_INFO_STA_FLAGS, 3786 sizeof(struct nl80211_sta_flag_update), 3787 &sinfo->sta_flags)) 3788 goto nla_put_failure; 3789 3790 PUT_SINFO(T_OFFSET, t_offset, u64); 3791 PUT_SINFO(RX_DROP_MISC, rx_dropped_misc, u64); 3792 PUT_SINFO(BEACON_RX, rx_beacon, u64); 3793 PUT_SINFO(BEACON_SIGNAL_AVG, rx_beacon_signal_avg, u8); 3794 3795 #undef PUT_SINFO 3796 3797 if (sinfo->filled & BIT(NL80211_STA_INFO_TID_STATS)) { 3798 struct nlattr *tidsattr; 3799 int tid; 3800 3801 tidsattr = nla_nest_start(msg, NL80211_STA_INFO_TID_STATS); 3802 if (!tidsattr) 3803 goto nla_put_failure; 3804 3805 for (tid = 0; tid < IEEE80211_NUM_TIDS + 1; tid++) { 3806 struct cfg80211_tid_stats *tidstats; 3807 struct nlattr *tidattr; 3808 3809 tidstats = &sinfo->pertid[tid]; 3810 3811 if (!tidstats->filled) 3812 continue; 3813 3814 tidattr = nla_nest_start(msg, tid + 1); 3815 if (!tidattr) 3816 goto nla_put_failure; 3817 3818 #define PUT_TIDVAL(attr, memb, type) do { \ 3819 if (tidstats->filled & BIT(NL80211_TID_STATS_ ## attr) && \ 3820 nla_put_ ## type(msg, NL80211_TID_STATS_ ## attr, \ 3821 tidstats->memb)) \ 3822 goto nla_put_failure; \ 3823 } while (0) 3824 3825 PUT_TIDVAL(RX_MSDU, rx_msdu, u64); 3826 PUT_TIDVAL(TX_MSDU, tx_msdu, u64); 3827 PUT_TIDVAL(TX_MSDU_RETRIES, tx_msdu_retries, u64); 3828 PUT_TIDVAL(TX_MSDU_FAILED, tx_msdu_failed, u64); 3829 3830 #undef PUT_TIDVAL 3831 nla_nest_end(msg, tidattr); 3832 } 3833 3834 nla_nest_end(msg, tidsattr); 3835 } 3836 3837 nla_nest_end(msg, sinfoattr); 3838 3839 if (sinfo->assoc_req_ies_len && 3840 nla_put(msg, NL80211_ATTR_IE, sinfo->assoc_req_ies_len, 3841 sinfo->assoc_req_ies)) 3842 goto nla_put_failure; 3843 3844 genlmsg_end(msg, hdr); 3845 return 0; 3846 3847 nla_put_failure: 3848 genlmsg_cancel(msg, hdr); 3849 return -EMSGSIZE; 3850 } 3851 3852 static int nl80211_dump_station(struct sk_buff *skb, 3853 struct netlink_callback *cb) 3854 { 3855 struct station_info sinfo; 3856 struct cfg80211_registered_device *rdev; 3857 struct wireless_dev *wdev; 3858 u8 mac_addr[ETH_ALEN]; 3859 int sta_idx = cb->args[2]; 3860 int err; 3861 3862 err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev); 3863 if (err) 3864 return err; 3865 3866 if (!wdev->netdev) { 3867 err = -EINVAL; 3868 goto out_err; 3869 } 3870 3871 if (!rdev->ops->dump_station) { 3872 err = -EOPNOTSUPP; 3873 goto out_err; 3874 } 3875 3876 while (1) { 3877 memset(&sinfo, 0, sizeof(sinfo)); 3878 err = rdev_dump_station(rdev, wdev->netdev, sta_idx, 3879 mac_addr, &sinfo); 3880 if (err == -ENOENT) 3881 break; 3882 if (err) 3883 goto out_err; 3884 3885 if (nl80211_send_station(skb, NL80211_CMD_NEW_STATION, 3886 NETLINK_CB(cb->skb).portid, 3887 cb->nlh->nlmsg_seq, NLM_F_MULTI, 3888 rdev, wdev->netdev, mac_addr, 3889 &sinfo) < 0) 3890 goto out; 3891 3892 sta_idx++; 3893 } 3894 3895 3896 out: 3897 cb->args[2] = sta_idx; 3898 err = skb->len; 3899 out_err: 3900 nl80211_finish_wdev_dump(rdev); 3901 3902 return err; 3903 } 3904 3905 static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info) 3906 { 3907 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 3908 struct net_device *dev = info->user_ptr[1]; 3909 struct station_info sinfo; 3910 struct sk_buff *msg; 3911 u8 *mac_addr = NULL; 3912 int err; 3913 3914 memset(&sinfo, 0, sizeof(sinfo)); 3915 3916 if (!info->attrs[NL80211_ATTR_MAC]) 3917 return -EINVAL; 3918 3919 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]); 3920 3921 if (!rdev->ops->get_station) 3922 return -EOPNOTSUPP; 3923 3924 err = rdev_get_station(rdev, dev, mac_addr, &sinfo); 3925 if (err) 3926 return err; 3927 3928 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 3929 if (!msg) 3930 return -ENOMEM; 3931 3932 if (nl80211_send_station(msg, NL80211_CMD_NEW_STATION, 3933 info->snd_portid, info->snd_seq, 0, 3934 rdev, dev, mac_addr, &sinfo) < 0) { 3935 nlmsg_free(msg); 3936 return -ENOBUFS; 3937 } 3938 3939 return genlmsg_reply(msg, info); 3940 } 3941 3942 int cfg80211_check_station_change(struct wiphy *wiphy, 3943 struct station_parameters *params, 3944 enum cfg80211_station_type statype) 3945 { 3946 if (params->listen_interval != -1) 3947 return -EINVAL; 3948 if (params->aid && 3949 !(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))) 3950 return -EINVAL; 3951 3952 /* When you run into this, adjust the code below for the new flag */ 3953 BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7); 3954 3955 switch (statype) { 3956 case CFG80211_STA_MESH_PEER_KERNEL: 3957 case CFG80211_STA_MESH_PEER_USER: 3958 /* 3959 * No ignoring the TDLS flag here -- the userspace mesh 3960 * code doesn't have the bug of including TDLS in the 3961 * mask everywhere. 3962 */ 3963 if (params->sta_flags_mask & 3964 ~(BIT(NL80211_STA_FLAG_AUTHENTICATED) | 3965 BIT(NL80211_STA_FLAG_MFP) | 3966 BIT(NL80211_STA_FLAG_AUTHORIZED))) 3967 return -EINVAL; 3968 break; 3969 case CFG80211_STA_TDLS_PEER_SETUP: 3970 case CFG80211_STA_TDLS_PEER_ACTIVE: 3971 if (!(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))) 3972 return -EINVAL; 3973 /* ignore since it can't change */ 3974 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER); 3975 break; 3976 default: 3977 /* disallow mesh-specific things */ 3978 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION) 3979 return -EINVAL; 3980 if (params->local_pm) 3981 return -EINVAL; 3982 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE) 3983 return -EINVAL; 3984 } 3985 3986 if (statype != CFG80211_STA_TDLS_PEER_SETUP && 3987 statype != CFG80211_STA_TDLS_PEER_ACTIVE) { 3988 /* TDLS can't be set, ... */ 3989 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) 3990 return -EINVAL; 3991 /* 3992 * ... but don't bother the driver with it. This works around 3993 * a hostapd/wpa_supplicant issue -- it always includes the 3994 * TLDS_PEER flag in the mask even for AP mode. 3995 */ 3996 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER); 3997 } 3998 3999 if (statype != CFG80211_STA_TDLS_PEER_SETUP) { 4000 /* reject other things that can't change */ 4001 if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD) 4002 return -EINVAL; 4003 if (params->sta_modify_mask & STATION_PARAM_APPLY_CAPABILITY) 4004 return -EINVAL; 4005 if (params->supported_rates) 4006 return -EINVAL; 4007 if (params->ext_capab || params->ht_capa || params->vht_capa) 4008 return -EINVAL; 4009 } 4010 4011 if (statype != CFG80211_STA_AP_CLIENT) { 4012 if (params->vlan) 4013 return -EINVAL; 4014 } 4015 4016 switch (statype) { 4017 case CFG80211_STA_AP_MLME_CLIENT: 4018 /* Use this only for authorizing/unauthorizing a station */ 4019 if (!(params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED))) 4020 return -EOPNOTSUPP; 4021 break; 4022 case CFG80211_STA_AP_CLIENT: 4023 /* accept only the listed bits */ 4024 if (params->sta_flags_mask & 4025 ~(BIT(NL80211_STA_FLAG_AUTHORIZED) | 4026 BIT(NL80211_STA_FLAG_AUTHENTICATED) | 4027 BIT(NL80211_STA_FLAG_ASSOCIATED) | 4028 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) | 4029 BIT(NL80211_STA_FLAG_WME) | 4030 BIT(NL80211_STA_FLAG_MFP))) 4031 return -EINVAL; 4032 4033 /* but authenticated/associated only if driver handles it */ 4034 if (!(wiphy->features & NL80211_FEATURE_FULL_AP_CLIENT_STATE) && 4035 params->sta_flags_mask & 4036 (BIT(NL80211_STA_FLAG_AUTHENTICATED) | 4037 BIT(NL80211_STA_FLAG_ASSOCIATED))) 4038 return -EINVAL; 4039 break; 4040 case CFG80211_STA_IBSS: 4041 case CFG80211_STA_AP_STA: 4042 /* reject any changes other than AUTHORIZED */ 4043 if (params->sta_flags_mask & ~BIT(NL80211_STA_FLAG_AUTHORIZED)) 4044 return -EINVAL; 4045 break; 4046 case CFG80211_STA_TDLS_PEER_SETUP: 4047 /* reject any changes other than AUTHORIZED or WME */ 4048 if (params->sta_flags_mask & ~(BIT(NL80211_STA_FLAG_AUTHORIZED) | 4049 BIT(NL80211_STA_FLAG_WME))) 4050 return -EINVAL; 4051 /* force (at least) rates when authorizing */ 4052 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_AUTHORIZED) && 4053 !params->supported_rates) 4054 return -EINVAL; 4055 break; 4056 case CFG80211_STA_TDLS_PEER_ACTIVE: 4057 /* reject any changes */ 4058 return -EINVAL; 4059 case CFG80211_STA_MESH_PEER_KERNEL: 4060 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE) 4061 return -EINVAL; 4062 break; 4063 case CFG80211_STA_MESH_PEER_USER: 4064 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION) 4065 return -EINVAL; 4066 break; 4067 } 4068 4069 return 0; 4070 } 4071 EXPORT_SYMBOL(cfg80211_check_station_change); 4072 4073 /* 4074 * Get vlan interface making sure it is running and on the right wiphy. 4075 */ 4076 static struct net_device *get_vlan(struct genl_info *info, 4077 struct cfg80211_registered_device *rdev) 4078 { 4079 struct nlattr *vlanattr = info->attrs[NL80211_ATTR_STA_VLAN]; 4080 struct net_device *v; 4081 int ret; 4082 4083 if (!vlanattr) 4084 return NULL; 4085 4086 v = dev_get_by_index(genl_info_net(info), nla_get_u32(vlanattr)); 4087 if (!v) 4088 return ERR_PTR(-ENODEV); 4089 4090 if (!v->ieee80211_ptr || v->ieee80211_ptr->wiphy != &rdev->wiphy) { 4091 ret = -EINVAL; 4092 goto error; 4093 } 4094 4095 if (v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN && 4096 v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP && 4097 v->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) { 4098 ret = -EINVAL; 4099 goto error; 4100 } 4101 4102 if (!netif_running(v)) { 4103 ret = -ENETDOWN; 4104 goto error; 4105 } 4106 4107 return v; 4108 error: 4109 dev_put(v); 4110 return ERR_PTR(ret); 4111 } 4112 4113 static const struct nla_policy 4114 nl80211_sta_wme_policy[NL80211_STA_WME_MAX + 1] = { 4115 [NL80211_STA_WME_UAPSD_QUEUES] = { .type = NLA_U8 }, 4116 [NL80211_STA_WME_MAX_SP] = { .type = NLA_U8 }, 4117 }; 4118 4119 static int nl80211_parse_sta_wme(struct genl_info *info, 4120 struct station_parameters *params) 4121 { 4122 struct nlattr *tb[NL80211_STA_WME_MAX + 1]; 4123 struct nlattr *nla; 4124 int err; 4125 4126 /* parse WME attributes if present */ 4127 if (!info->attrs[NL80211_ATTR_STA_WME]) 4128 return 0; 4129 4130 nla = info->attrs[NL80211_ATTR_STA_WME]; 4131 err = nla_parse_nested(tb, NL80211_STA_WME_MAX, nla, 4132 nl80211_sta_wme_policy); 4133 if (err) 4134 return err; 4135 4136 if (tb[NL80211_STA_WME_UAPSD_QUEUES]) 4137 params->uapsd_queues = nla_get_u8( 4138 tb[NL80211_STA_WME_UAPSD_QUEUES]); 4139 if (params->uapsd_queues & ~IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK) 4140 return -EINVAL; 4141 4142 if (tb[NL80211_STA_WME_MAX_SP]) 4143 params->max_sp = nla_get_u8(tb[NL80211_STA_WME_MAX_SP]); 4144 4145 if (params->max_sp & ~IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK) 4146 return -EINVAL; 4147 4148 params->sta_modify_mask |= STATION_PARAM_APPLY_UAPSD; 4149 4150 return 0; 4151 } 4152 4153 static int nl80211_parse_sta_channel_info(struct genl_info *info, 4154 struct station_parameters *params) 4155 { 4156 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]) { 4157 params->supported_channels = 4158 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]); 4159 params->supported_channels_len = 4160 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]); 4161 /* 4162 * Need to include at least one (first channel, number of 4163 * channels) tuple for each subband, and must have proper 4164 * tuples for the rest of the data as well. 4165 */ 4166 if (params->supported_channels_len < 2) 4167 return -EINVAL; 4168 if (params->supported_channels_len % 2) 4169 return -EINVAL; 4170 } 4171 4172 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]) { 4173 params->supported_oper_classes = 4174 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]); 4175 params->supported_oper_classes_len = 4176 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]); 4177 /* 4178 * The value of the Length field of the Supported Operating 4179 * Classes element is between 2 and 253. 4180 */ 4181 if (params->supported_oper_classes_len < 2 || 4182 params->supported_oper_classes_len > 253) 4183 return -EINVAL; 4184 } 4185 return 0; 4186 } 4187 4188 static int nl80211_set_station_tdls(struct genl_info *info, 4189 struct station_parameters *params) 4190 { 4191 int err; 4192 /* Dummy STA entry gets updated once the peer capabilities are known */ 4193 if (info->attrs[NL80211_ATTR_PEER_AID]) 4194 params->aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]); 4195 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) 4196 params->ht_capa = 4197 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]); 4198 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) 4199 params->vht_capa = 4200 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]); 4201 4202 err = nl80211_parse_sta_channel_info(info, params); 4203 if (err) 4204 return err; 4205 4206 return nl80211_parse_sta_wme(info, params); 4207 } 4208 4209 static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info) 4210 { 4211 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 4212 struct net_device *dev = info->user_ptr[1]; 4213 struct station_parameters params; 4214 u8 *mac_addr; 4215 int err; 4216 4217 memset(¶ms, 0, sizeof(params)); 4218 4219 params.listen_interval = -1; 4220 4221 if (!rdev->ops->change_station) 4222 return -EOPNOTSUPP; 4223 4224 if (info->attrs[NL80211_ATTR_STA_AID]) 4225 return -EINVAL; 4226 4227 if (!info->attrs[NL80211_ATTR_MAC]) 4228 return -EINVAL; 4229 4230 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]); 4231 4232 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) { 4233 params.supported_rates = 4234 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]); 4235 params.supported_rates_len = 4236 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]); 4237 } 4238 4239 if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) { 4240 params.capability = 4241 nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]); 4242 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY; 4243 } 4244 4245 if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) { 4246 params.ext_capab = 4247 nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]); 4248 params.ext_capab_len = 4249 nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]); 4250 } 4251 4252 if (info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]) 4253 return -EINVAL; 4254 4255 if (parse_station_flags(info, dev->ieee80211_ptr->iftype, ¶ms)) 4256 return -EINVAL; 4257 4258 if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION]) { 4259 params.plink_action = 4260 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]); 4261 if (params.plink_action >= NUM_NL80211_PLINK_ACTIONS) 4262 return -EINVAL; 4263 } 4264 4265 if (info->attrs[NL80211_ATTR_STA_PLINK_STATE]) { 4266 params.plink_state = 4267 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_STATE]); 4268 if (params.plink_state >= NUM_NL80211_PLINK_STATES) 4269 return -EINVAL; 4270 params.sta_modify_mask |= STATION_PARAM_APPLY_PLINK_STATE; 4271 } 4272 4273 if (info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]) { 4274 enum nl80211_mesh_power_mode pm = nla_get_u32( 4275 info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]); 4276 4277 if (pm <= NL80211_MESH_POWER_UNKNOWN || 4278 pm > NL80211_MESH_POWER_MAX) 4279 return -EINVAL; 4280 4281 params.local_pm = pm; 4282 } 4283 4284 /* Include parameters for TDLS peer (will check later) */ 4285 err = nl80211_set_station_tdls(info, ¶ms); 4286 if (err) 4287 return err; 4288 4289 params.vlan = get_vlan(info, rdev); 4290 if (IS_ERR(params.vlan)) 4291 return PTR_ERR(params.vlan); 4292 4293 switch (dev->ieee80211_ptr->iftype) { 4294 case NL80211_IFTYPE_AP: 4295 case NL80211_IFTYPE_AP_VLAN: 4296 case NL80211_IFTYPE_P2P_GO: 4297 case NL80211_IFTYPE_P2P_CLIENT: 4298 case NL80211_IFTYPE_STATION: 4299 case NL80211_IFTYPE_ADHOC: 4300 case NL80211_IFTYPE_MESH_POINT: 4301 break; 4302 default: 4303 err = -EOPNOTSUPP; 4304 goto out_put_vlan; 4305 } 4306 4307 /* driver will call cfg80211_check_station_change() */ 4308 err = rdev_change_station(rdev, dev, mac_addr, ¶ms); 4309 4310 out_put_vlan: 4311 if (params.vlan) 4312 dev_put(params.vlan); 4313 4314 return err; 4315 } 4316 4317 static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info) 4318 { 4319 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 4320 int err; 4321 struct net_device *dev = info->user_ptr[1]; 4322 struct station_parameters params; 4323 u8 *mac_addr = NULL; 4324 4325 memset(¶ms, 0, sizeof(params)); 4326 4327 if (!rdev->ops->add_station) 4328 return -EOPNOTSUPP; 4329 4330 if (!info->attrs[NL80211_ATTR_MAC]) 4331 return -EINVAL; 4332 4333 if (!info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]) 4334 return -EINVAL; 4335 4336 if (!info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) 4337 return -EINVAL; 4338 4339 if (!info->attrs[NL80211_ATTR_STA_AID] && 4340 !info->attrs[NL80211_ATTR_PEER_AID]) 4341 return -EINVAL; 4342 4343 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]); 4344 params.supported_rates = 4345 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]); 4346 params.supported_rates_len = 4347 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]); 4348 params.listen_interval = 4349 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]); 4350 4351 if (info->attrs[NL80211_ATTR_PEER_AID]) 4352 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]); 4353 else 4354 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]); 4355 if (!params.aid || params.aid > IEEE80211_MAX_AID) 4356 return -EINVAL; 4357 4358 if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) { 4359 params.capability = 4360 nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]); 4361 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY; 4362 } 4363 4364 if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) { 4365 params.ext_capab = 4366 nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]); 4367 params.ext_capab_len = 4368 nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]); 4369 } 4370 4371 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) 4372 params.ht_capa = 4373 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]); 4374 4375 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) 4376 params.vht_capa = 4377 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]); 4378 4379 if (info->attrs[NL80211_ATTR_OPMODE_NOTIF]) { 4380 params.opmode_notif_used = true; 4381 params.opmode_notif = 4382 nla_get_u8(info->attrs[NL80211_ATTR_OPMODE_NOTIF]); 4383 } 4384 4385 if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION]) { 4386 params.plink_action = 4387 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]); 4388 if (params.plink_action >= NUM_NL80211_PLINK_ACTIONS) 4389 return -EINVAL; 4390 } 4391 4392 err = nl80211_parse_sta_channel_info(info, ¶ms); 4393 if (err) 4394 return err; 4395 4396 err = nl80211_parse_sta_wme(info, ¶ms); 4397 if (err) 4398 return err; 4399 4400 if (parse_station_flags(info, dev->ieee80211_ptr->iftype, ¶ms)) 4401 return -EINVAL; 4402 4403 /* HT/VHT requires QoS, but if we don't have that just ignore HT/VHT 4404 * as userspace might just pass through the capabilities from the IEs 4405 * directly, rather than enforcing this restriction and returning an 4406 * error in this case. 4407 */ 4408 if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME))) { 4409 params.ht_capa = NULL; 4410 params.vht_capa = NULL; 4411 } 4412 4413 /* When you run into this, adjust the code below for the new flag */ 4414 BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7); 4415 4416 switch (dev->ieee80211_ptr->iftype) { 4417 case NL80211_IFTYPE_AP: 4418 case NL80211_IFTYPE_AP_VLAN: 4419 case NL80211_IFTYPE_P2P_GO: 4420 /* ignore WME attributes if iface/sta is not capable */ 4421 if (!(rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) || 4422 !(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME))) 4423 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD; 4424 4425 /* TDLS peers cannot be added */ 4426 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) || 4427 info->attrs[NL80211_ATTR_PEER_AID]) 4428 return -EINVAL; 4429 /* but don't bother the driver with it */ 4430 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER); 4431 4432 /* allow authenticated/associated only if driver handles it */ 4433 if (!(rdev->wiphy.features & 4434 NL80211_FEATURE_FULL_AP_CLIENT_STATE) && 4435 params.sta_flags_mask & 4436 (BIT(NL80211_STA_FLAG_AUTHENTICATED) | 4437 BIT(NL80211_STA_FLAG_ASSOCIATED))) 4438 return -EINVAL; 4439 4440 /* must be last in here for error handling */ 4441 params.vlan = get_vlan(info, rdev); 4442 if (IS_ERR(params.vlan)) 4443 return PTR_ERR(params.vlan); 4444 break; 4445 case NL80211_IFTYPE_MESH_POINT: 4446 /* ignore uAPSD data */ 4447 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD; 4448 4449 /* associated is disallowed */ 4450 if (params.sta_flags_mask & BIT(NL80211_STA_FLAG_ASSOCIATED)) 4451 return -EINVAL; 4452 /* TDLS peers cannot be added */ 4453 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) || 4454 info->attrs[NL80211_ATTR_PEER_AID]) 4455 return -EINVAL; 4456 break; 4457 case NL80211_IFTYPE_STATION: 4458 case NL80211_IFTYPE_P2P_CLIENT: 4459 /* ignore uAPSD data */ 4460 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD; 4461 4462 /* these are disallowed */ 4463 if (params.sta_flags_mask & 4464 (BIT(NL80211_STA_FLAG_ASSOCIATED) | 4465 BIT(NL80211_STA_FLAG_AUTHENTICATED))) 4466 return -EINVAL; 4467 /* Only TDLS peers can be added */ 4468 if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))) 4469 return -EINVAL; 4470 /* Can only add if TDLS ... */ 4471 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS)) 4472 return -EOPNOTSUPP; 4473 /* ... with external setup is supported */ 4474 if (!(rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP)) 4475 return -EOPNOTSUPP; 4476 /* 4477 * Older wpa_supplicant versions always mark the TDLS peer 4478 * as authorized, but it shouldn't yet be. 4479 */ 4480 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_AUTHORIZED); 4481 break; 4482 default: 4483 return -EOPNOTSUPP; 4484 } 4485 4486 /* be aware of params.vlan when changing code here */ 4487 4488 err = rdev_add_station(rdev, dev, mac_addr, ¶ms); 4489 4490 if (params.vlan) 4491 dev_put(params.vlan); 4492 return err; 4493 } 4494 4495 static int nl80211_del_station(struct sk_buff *skb, struct genl_info *info) 4496 { 4497 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 4498 struct net_device *dev = info->user_ptr[1]; 4499 struct station_del_parameters params; 4500 4501 memset(¶ms, 0, sizeof(params)); 4502 4503 if (info->attrs[NL80211_ATTR_MAC]) 4504 params.mac = nla_data(info->attrs[NL80211_ATTR_MAC]); 4505 4506 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP && 4507 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN && 4508 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT && 4509 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) 4510 return -EINVAL; 4511 4512 if (!rdev->ops->del_station) 4513 return -EOPNOTSUPP; 4514 4515 if (info->attrs[NL80211_ATTR_MGMT_SUBTYPE]) { 4516 params.subtype = 4517 nla_get_u8(info->attrs[NL80211_ATTR_MGMT_SUBTYPE]); 4518 if (params.subtype != IEEE80211_STYPE_DISASSOC >> 4 && 4519 params.subtype != IEEE80211_STYPE_DEAUTH >> 4) 4520 return -EINVAL; 4521 } else { 4522 /* Default to Deauthentication frame */ 4523 params.subtype = IEEE80211_STYPE_DEAUTH >> 4; 4524 } 4525 4526 if (info->attrs[NL80211_ATTR_REASON_CODE]) { 4527 params.reason_code = 4528 nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]); 4529 if (params.reason_code == 0) 4530 return -EINVAL; /* 0 is reserved */ 4531 } else { 4532 /* Default to reason code 2 */ 4533 params.reason_code = WLAN_REASON_PREV_AUTH_NOT_VALID; 4534 } 4535 4536 return rdev_del_station(rdev, dev, ¶ms); 4537 } 4538 4539 static int nl80211_send_mpath(struct sk_buff *msg, u32 portid, u32 seq, 4540 int flags, struct net_device *dev, 4541 u8 *dst, u8 *next_hop, 4542 struct mpath_info *pinfo) 4543 { 4544 void *hdr; 4545 struct nlattr *pinfoattr; 4546 4547 hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_MPATH); 4548 if (!hdr) 4549 return -1; 4550 4551 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) || 4552 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, dst) || 4553 nla_put(msg, NL80211_ATTR_MPATH_NEXT_HOP, ETH_ALEN, next_hop) || 4554 nla_put_u32(msg, NL80211_ATTR_GENERATION, pinfo->generation)) 4555 goto nla_put_failure; 4556 4557 pinfoattr = nla_nest_start(msg, NL80211_ATTR_MPATH_INFO); 4558 if (!pinfoattr) 4559 goto nla_put_failure; 4560 if ((pinfo->filled & MPATH_INFO_FRAME_QLEN) && 4561 nla_put_u32(msg, NL80211_MPATH_INFO_FRAME_QLEN, 4562 pinfo->frame_qlen)) 4563 goto nla_put_failure; 4564 if (((pinfo->filled & MPATH_INFO_SN) && 4565 nla_put_u32(msg, NL80211_MPATH_INFO_SN, pinfo->sn)) || 4566 ((pinfo->filled & MPATH_INFO_METRIC) && 4567 nla_put_u32(msg, NL80211_MPATH_INFO_METRIC, 4568 pinfo->metric)) || 4569 ((pinfo->filled & MPATH_INFO_EXPTIME) && 4570 nla_put_u32(msg, NL80211_MPATH_INFO_EXPTIME, 4571 pinfo->exptime)) || 4572 ((pinfo->filled & MPATH_INFO_FLAGS) && 4573 nla_put_u8(msg, NL80211_MPATH_INFO_FLAGS, 4574 pinfo->flags)) || 4575 ((pinfo->filled & MPATH_INFO_DISCOVERY_TIMEOUT) && 4576 nla_put_u32(msg, NL80211_MPATH_INFO_DISCOVERY_TIMEOUT, 4577 pinfo->discovery_timeout)) || 4578 ((pinfo->filled & MPATH_INFO_DISCOVERY_RETRIES) && 4579 nla_put_u8(msg, NL80211_MPATH_INFO_DISCOVERY_RETRIES, 4580 pinfo->discovery_retries))) 4581 goto nla_put_failure; 4582 4583 nla_nest_end(msg, pinfoattr); 4584 4585 genlmsg_end(msg, hdr); 4586 return 0; 4587 4588 nla_put_failure: 4589 genlmsg_cancel(msg, hdr); 4590 return -EMSGSIZE; 4591 } 4592 4593 static int nl80211_dump_mpath(struct sk_buff *skb, 4594 struct netlink_callback *cb) 4595 { 4596 struct mpath_info pinfo; 4597 struct cfg80211_registered_device *rdev; 4598 struct wireless_dev *wdev; 4599 u8 dst[ETH_ALEN]; 4600 u8 next_hop[ETH_ALEN]; 4601 int path_idx = cb->args[2]; 4602 int err; 4603 4604 err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev); 4605 if (err) 4606 return err; 4607 4608 if (!rdev->ops->dump_mpath) { 4609 err = -EOPNOTSUPP; 4610 goto out_err; 4611 } 4612 4613 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) { 4614 err = -EOPNOTSUPP; 4615 goto out_err; 4616 } 4617 4618 while (1) { 4619 err = rdev_dump_mpath(rdev, wdev->netdev, path_idx, dst, 4620 next_hop, &pinfo); 4621 if (err == -ENOENT) 4622 break; 4623 if (err) 4624 goto out_err; 4625 4626 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid, 4627 cb->nlh->nlmsg_seq, NLM_F_MULTI, 4628 wdev->netdev, dst, next_hop, 4629 &pinfo) < 0) 4630 goto out; 4631 4632 path_idx++; 4633 } 4634 4635 4636 out: 4637 cb->args[2] = path_idx; 4638 err = skb->len; 4639 out_err: 4640 nl80211_finish_wdev_dump(rdev); 4641 return err; 4642 } 4643 4644 static int nl80211_get_mpath(struct sk_buff *skb, struct genl_info *info) 4645 { 4646 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 4647 int err; 4648 struct net_device *dev = info->user_ptr[1]; 4649 struct mpath_info pinfo; 4650 struct sk_buff *msg; 4651 u8 *dst = NULL; 4652 u8 next_hop[ETH_ALEN]; 4653 4654 memset(&pinfo, 0, sizeof(pinfo)); 4655 4656 if (!info->attrs[NL80211_ATTR_MAC]) 4657 return -EINVAL; 4658 4659 dst = nla_data(info->attrs[NL80211_ATTR_MAC]); 4660 4661 if (!rdev->ops->get_mpath) 4662 return -EOPNOTSUPP; 4663 4664 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT) 4665 return -EOPNOTSUPP; 4666 4667 err = rdev_get_mpath(rdev, dev, dst, next_hop, &pinfo); 4668 if (err) 4669 return err; 4670 4671 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 4672 if (!msg) 4673 return -ENOMEM; 4674 4675 if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0, 4676 dev, dst, next_hop, &pinfo) < 0) { 4677 nlmsg_free(msg); 4678 return -ENOBUFS; 4679 } 4680 4681 return genlmsg_reply(msg, info); 4682 } 4683 4684 static int nl80211_set_mpath(struct sk_buff *skb, struct genl_info *info) 4685 { 4686 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 4687 struct net_device *dev = info->user_ptr[1]; 4688 u8 *dst = NULL; 4689 u8 *next_hop = NULL; 4690 4691 if (!info->attrs[NL80211_ATTR_MAC]) 4692 return -EINVAL; 4693 4694 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]) 4695 return -EINVAL; 4696 4697 dst = nla_data(info->attrs[NL80211_ATTR_MAC]); 4698 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]); 4699 4700 if (!rdev->ops->change_mpath) 4701 return -EOPNOTSUPP; 4702 4703 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT) 4704 return -EOPNOTSUPP; 4705 4706 return rdev_change_mpath(rdev, dev, dst, next_hop); 4707 } 4708 4709 static int nl80211_new_mpath(struct sk_buff *skb, struct genl_info *info) 4710 { 4711 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 4712 struct net_device *dev = info->user_ptr[1]; 4713 u8 *dst = NULL; 4714 u8 *next_hop = NULL; 4715 4716 if (!info->attrs[NL80211_ATTR_MAC]) 4717 return -EINVAL; 4718 4719 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]) 4720 return -EINVAL; 4721 4722 dst = nla_data(info->attrs[NL80211_ATTR_MAC]); 4723 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]); 4724 4725 if (!rdev->ops->add_mpath) 4726 return -EOPNOTSUPP; 4727 4728 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT) 4729 return -EOPNOTSUPP; 4730 4731 return rdev_add_mpath(rdev, dev, dst, next_hop); 4732 } 4733 4734 static int nl80211_del_mpath(struct sk_buff *skb, struct genl_info *info) 4735 { 4736 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 4737 struct net_device *dev = info->user_ptr[1]; 4738 u8 *dst = NULL; 4739 4740 if (info->attrs[NL80211_ATTR_MAC]) 4741 dst = nla_data(info->attrs[NL80211_ATTR_MAC]); 4742 4743 if (!rdev->ops->del_mpath) 4744 return -EOPNOTSUPP; 4745 4746 return rdev_del_mpath(rdev, dev, dst); 4747 } 4748 4749 static int nl80211_get_mpp(struct sk_buff *skb, struct genl_info *info) 4750 { 4751 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 4752 int err; 4753 struct net_device *dev = info->user_ptr[1]; 4754 struct mpath_info pinfo; 4755 struct sk_buff *msg; 4756 u8 *dst = NULL; 4757 u8 mpp[ETH_ALEN]; 4758 4759 memset(&pinfo, 0, sizeof(pinfo)); 4760 4761 if (!info->attrs[NL80211_ATTR_MAC]) 4762 return -EINVAL; 4763 4764 dst = nla_data(info->attrs[NL80211_ATTR_MAC]); 4765 4766 if (!rdev->ops->get_mpp) 4767 return -EOPNOTSUPP; 4768 4769 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT) 4770 return -EOPNOTSUPP; 4771 4772 err = rdev_get_mpp(rdev, dev, dst, mpp, &pinfo); 4773 if (err) 4774 return err; 4775 4776 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 4777 if (!msg) 4778 return -ENOMEM; 4779 4780 if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0, 4781 dev, dst, mpp, &pinfo) < 0) { 4782 nlmsg_free(msg); 4783 return -ENOBUFS; 4784 } 4785 4786 return genlmsg_reply(msg, info); 4787 } 4788 4789 static int nl80211_dump_mpp(struct sk_buff *skb, 4790 struct netlink_callback *cb) 4791 { 4792 struct mpath_info pinfo; 4793 struct cfg80211_registered_device *rdev; 4794 struct wireless_dev *wdev; 4795 u8 dst[ETH_ALEN]; 4796 u8 mpp[ETH_ALEN]; 4797 int path_idx = cb->args[2]; 4798 int err; 4799 4800 err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev); 4801 if (err) 4802 return err; 4803 4804 if (!rdev->ops->dump_mpp) { 4805 err = -EOPNOTSUPP; 4806 goto out_err; 4807 } 4808 4809 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) { 4810 err = -EOPNOTSUPP; 4811 goto out_err; 4812 } 4813 4814 while (1) { 4815 err = rdev_dump_mpp(rdev, wdev->netdev, path_idx, dst, 4816 mpp, &pinfo); 4817 if (err == -ENOENT) 4818 break; 4819 if (err) 4820 goto out_err; 4821 4822 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid, 4823 cb->nlh->nlmsg_seq, NLM_F_MULTI, 4824 wdev->netdev, dst, mpp, 4825 &pinfo) < 0) 4826 goto out; 4827 4828 path_idx++; 4829 } 4830 4831 out: 4832 cb->args[2] = path_idx; 4833 err = skb->len; 4834 out_err: 4835 nl80211_finish_wdev_dump(rdev); 4836 return err; 4837 } 4838 4839 static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info) 4840 { 4841 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 4842 struct net_device *dev = info->user_ptr[1]; 4843 struct wireless_dev *wdev = dev->ieee80211_ptr; 4844 struct bss_parameters params; 4845 int err; 4846 4847 memset(¶ms, 0, sizeof(params)); 4848 /* default to not changing parameters */ 4849 params.use_cts_prot = -1; 4850 params.use_short_preamble = -1; 4851 params.use_short_slot_time = -1; 4852 params.ap_isolate = -1; 4853 params.ht_opmode = -1; 4854 params.p2p_ctwindow = -1; 4855 params.p2p_opp_ps = -1; 4856 4857 if (info->attrs[NL80211_ATTR_BSS_CTS_PROT]) 4858 params.use_cts_prot = 4859 nla_get_u8(info->attrs[NL80211_ATTR_BSS_CTS_PROT]); 4860 if (info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]) 4861 params.use_short_preamble = 4862 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]); 4863 if (info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]) 4864 params.use_short_slot_time = 4865 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]); 4866 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) { 4867 params.basic_rates = 4868 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]); 4869 params.basic_rates_len = 4870 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]); 4871 } 4872 if (info->attrs[NL80211_ATTR_AP_ISOLATE]) 4873 params.ap_isolate = !!nla_get_u8(info->attrs[NL80211_ATTR_AP_ISOLATE]); 4874 if (info->attrs[NL80211_ATTR_BSS_HT_OPMODE]) 4875 params.ht_opmode = 4876 nla_get_u16(info->attrs[NL80211_ATTR_BSS_HT_OPMODE]); 4877 4878 if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) { 4879 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) 4880 return -EINVAL; 4881 params.p2p_ctwindow = 4882 nla_get_s8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]); 4883 if (params.p2p_ctwindow < 0) 4884 return -EINVAL; 4885 if (params.p2p_ctwindow != 0 && 4886 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN)) 4887 return -EINVAL; 4888 } 4889 4890 if (info->attrs[NL80211_ATTR_P2P_OPPPS]) { 4891 u8 tmp; 4892 4893 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) 4894 return -EINVAL; 4895 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]); 4896 if (tmp > 1) 4897 return -EINVAL; 4898 params.p2p_opp_ps = tmp; 4899 if (params.p2p_opp_ps && 4900 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS)) 4901 return -EINVAL; 4902 } 4903 4904 if (!rdev->ops->change_bss) 4905 return -EOPNOTSUPP; 4906 4907 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP && 4908 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) 4909 return -EOPNOTSUPP; 4910 4911 wdev_lock(wdev); 4912 err = rdev_change_bss(rdev, dev, ¶ms); 4913 wdev_unlock(wdev); 4914 4915 return err; 4916 } 4917 4918 static const struct nla_policy reg_rule_policy[NL80211_REG_RULE_ATTR_MAX + 1] = { 4919 [NL80211_ATTR_REG_RULE_FLAGS] = { .type = NLA_U32 }, 4920 [NL80211_ATTR_FREQ_RANGE_START] = { .type = NLA_U32 }, 4921 [NL80211_ATTR_FREQ_RANGE_END] = { .type = NLA_U32 }, 4922 [NL80211_ATTR_FREQ_RANGE_MAX_BW] = { .type = NLA_U32 }, 4923 [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN] = { .type = NLA_U32 }, 4924 [NL80211_ATTR_POWER_RULE_MAX_EIRP] = { .type = NLA_U32 }, 4925 [NL80211_ATTR_DFS_CAC_TIME] = { .type = NLA_U32 }, 4926 }; 4927 4928 static int parse_reg_rule(struct nlattr *tb[], 4929 struct ieee80211_reg_rule *reg_rule) 4930 { 4931 struct ieee80211_freq_range *freq_range = ®_rule->freq_range; 4932 struct ieee80211_power_rule *power_rule = ®_rule->power_rule; 4933 4934 if (!tb[NL80211_ATTR_REG_RULE_FLAGS]) 4935 return -EINVAL; 4936 if (!tb[NL80211_ATTR_FREQ_RANGE_START]) 4937 return -EINVAL; 4938 if (!tb[NL80211_ATTR_FREQ_RANGE_END]) 4939 return -EINVAL; 4940 if (!tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]) 4941 return -EINVAL; 4942 if (!tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]) 4943 return -EINVAL; 4944 4945 reg_rule->flags = nla_get_u32(tb[NL80211_ATTR_REG_RULE_FLAGS]); 4946 4947 freq_range->start_freq_khz = 4948 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]); 4949 freq_range->end_freq_khz = 4950 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]); 4951 freq_range->max_bandwidth_khz = 4952 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]); 4953 4954 power_rule->max_eirp = 4955 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]); 4956 4957 if (tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]) 4958 power_rule->max_antenna_gain = 4959 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]); 4960 4961 if (tb[NL80211_ATTR_DFS_CAC_TIME]) 4962 reg_rule->dfs_cac_ms = 4963 nla_get_u32(tb[NL80211_ATTR_DFS_CAC_TIME]); 4964 4965 return 0; 4966 } 4967 4968 static int nl80211_req_set_reg(struct sk_buff *skb, struct genl_info *info) 4969 { 4970 char *data = NULL; 4971 enum nl80211_user_reg_hint_type user_reg_hint_type; 4972 4973 /* 4974 * You should only get this when cfg80211 hasn't yet initialized 4975 * completely when built-in to the kernel right between the time 4976 * window between nl80211_init() and regulatory_init(), if that is 4977 * even possible. 4978 */ 4979 if (unlikely(!rcu_access_pointer(cfg80211_regdomain))) 4980 return -EINPROGRESS; 4981 4982 if (info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE]) 4983 user_reg_hint_type = 4984 nla_get_u32(info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE]); 4985 else 4986 user_reg_hint_type = NL80211_USER_REG_HINT_USER; 4987 4988 switch (user_reg_hint_type) { 4989 case NL80211_USER_REG_HINT_USER: 4990 case NL80211_USER_REG_HINT_CELL_BASE: 4991 if (!info->attrs[NL80211_ATTR_REG_ALPHA2]) 4992 return -EINVAL; 4993 4994 data = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]); 4995 return regulatory_hint_user(data, user_reg_hint_type); 4996 case NL80211_USER_REG_HINT_INDOOR: 4997 return regulatory_hint_indoor_user(); 4998 default: 4999 return -EINVAL; 5000 } 5001 } 5002 5003 static int nl80211_get_mesh_config(struct sk_buff *skb, 5004 struct genl_info *info) 5005 { 5006 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 5007 struct net_device *dev = info->user_ptr[1]; 5008 struct wireless_dev *wdev = dev->ieee80211_ptr; 5009 struct mesh_config cur_params; 5010 int err = 0; 5011 void *hdr; 5012 struct nlattr *pinfoattr; 5013 struct sk_buff *msg; 5014 5015 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) 5016 return -EOPNOTSUPP; 5017 5018 if (!rdev->ops->get_mesh_config) 5019 return -EOPNOTSUPP; 5020 5021 wdev_lock(wdev); 5022 /* If not connected, get default parameters */ 5023 if (!wdev->mesh_id_len) 5024 memcpy(&cur_params, &default_mesh_config, sizeof(cur_params)); 5025 else 5026 err = rdev_get_mesh_config(rdev, dev, &cur_params); 5027 wdev_unlock(wdev); 5028 5029 if (err) 5030 return err; 5031 5032 /* Draw up a netlink message to send back */ 5033 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 5034 if (!msg) 5035 return -ENOMEM; 5036 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0, 5037 NL80211_CMD_GET_MESH_CONFIG); 5038 if (!hdr) 5039 goto out; 5040 pinfoattr = nla_nest_start(msg, NL80211_ATTR_MESH_CONFIG); 5041 if (!pinfoattr) 5042 goto nla_put_failure; 5043 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) || 5044 nla_put_u16(msg, NL80211_MESHCONF_RETRY_TIMEOUT, 5045 cur_params.dot11MeshRetryTimeout) || 5046 nla_put_u16(msg, NL80211_MESHCONF_CONFIRM_TIMEOUT, 5047 cur_params.dot11MeshConfirmTimeout) || 5048 nla_put_u16(msg, NL80211_MESHCONF_HOLDING_TIMEOUT, 5049 cur_params.dot11MeshHoldingTimeout) || 5050 nla_put_u16(msg, NL80211_MESHCONF_MAX_PEER_LINKS, 5051 cur_params.dot11MeshMaxPeerLinks) || 5052 nla_put_u8(msg, NL80211_MESHCONF_MAX_RETRIES, 5053 cur_params.dot11MeshMaxRetries) || 5054 nla_put_u8(msg, NL80211_MESHCONF_TTL, 5055 cur_params.dot11MeshTTL) || 5056 nla_put_u8(msg, NL80211_MESHCONF_ELEMENT_TTL, 5057 cur_params.element_ttl) || 5058 nla_put_u8(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS, 5059 cur_params.auto_open_plinks) || 5060 nla_put_u32(msg, NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR, 5061 cur_params.dot11MeshNbrOffsetMaxNeighbor) || 5062 nla_put_u8(msg, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES, 5063 cur_params.dot11MeshHWMPmaxPREQretries) || 5064 nla_put_u32(msg, NL80211_MESHCONF_PATH_REFRESH_TIME, 5065 cur_params.path_refresh_time) || 5066 nla_put_u16(msg, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT, 5067 cur_params.min_discovery_timeout) || 5068 nla_put_u32(msg, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT, 5069 cur_params.dot11MeshHWMPactivePathTimeout) || 5070 nla_put_u16(msg, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL, 5071 cur_params.dot11MeshHWMPpreqMinInterval) || 5072 nla_put_u16(msg, NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL, 5073 cur_params.dot11MeshHWMPperrMinInterval) || 5074 nla_put_u16(msg, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME, 5075 cur_params.dot11MeshHWMPnetDiameterTraversalTime) || 5076 nla_put_u8(msg, NL80211_MESHCONF_HWMP_ROOTMODE, 5077 cur_params.dot11MeshHWMPRootMode) || 5078 nla_put_u16(msg, NL80211_MESHCONF_HWMP_RANN_INTERVAL, 5079 cur_params.dot11MeshHWMPRannInterval) || 5080 nla_put_u8(msg, NL80211_MESHCONF_GATE_ANNOUNCEMENTS, 5081 cur_params.dot11MeshGateAnnouncementProtocol) || 5082 nla_put_u8(msg, NL80211_MESHCONF_FORWARDING, 5083 cur_params.dot11MeshForwarding) || 5084 nla_put_u32(msg, NL80211_MESHCONF_RSSI_THRESHOLD, 5085 cur_params.rssi_threshold) || 5086 nla_put_u32(msg, NL80211_MESHCONF_HT_OPMODE, 5087 cur_params.ht_opmode) || 5088 nla_put_u32(msg, NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT, 5089 cur_params.dot11MeshHWMPactivePathToRootTimeout) || 5090 nla_put_u16(msg, NL80211_MESHCONF_HWMP_ROOT_INTERVAL, 5091 cur_params.dot11MeshHWMProotInterval) || 5092 nla_put_u16(msg, NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL, 5093 cur_params.dot11MeshHWMPconfirmationInterval) || 5094 nla_put_u32(msg, NL80211_MESHCONF_POWER_MODE, 5095 cur_params.power_mode) || 5096 nla_put_u16(msg, NL80211_MESHCONF_AWAKE_WINDOW, 5097 cur_params.dot11MeshAwakeWindowDuration) || 5098 nla_put_u32(msg, NL80211_MESHCONF_PLINK_TIMEOUT, 5099 cur_params.plink_timeout)) 5100 goto nla_put_failure; 5101 nla_nest_end(msg, pinfoattr); 5102 genlmsg_end(msg, hdr); 5103 return genlmsg_reply(msg, info); 5104 5105 nla_put_failure: 5106 genlmsg_cancel(msg, hdr); 5107 out: 5108 nlmsg_free(msg); 5109 return -ENOBUFS; 5110 } 5111 5112 static const struct nla_policy nl80211_meshconf_params_policy[NL80211_MESHCONF_ATTR_MAX+1] = { 5113 [NL80211_MESHCONF_RETRY_TIMEOUT] = { .type = NLA_U16 }, 5114 [NL80211_MESHCONF_CONFIRM_TIMEOUT] = { .type = NLA_U16 }, 5115 [NL80211_MESHCONF_HOLDING_TIMEOUT] = { .type = NLA_U16 }, 5116 [NL80211_MESHCONF_MAX_PEER_LINKS] = { .type = NLA_U16 }, 5117 [NL80211_MESHCONF_MAX_RETRIES] = { .type = NLA_U8 }, 5118 [NL80211_MESHCONF_TTL] = { .type = NLA_U8 }, 5119 [NL80211_MESHCONF_ELEMENT_TTL] = { .type = NLA_U8 }, 5120 [NL80211_MESHCONF_AUTO_OPEN_PLINKS] = { .type = NLA_U8 }, 5121 [NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR] = { .type = NLA_U32 }, 5122 [NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES] = { .type = NLA_U8 }, 5123 [NL80211_MESHCONF_PATH_REFRESH_TIME] = { .type = NLA_U32 }, 5124 [NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT] = { .type = NLA_U16 }, 5125 [NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT] = { .type = NLA_U32 }, 5126 [NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL] = { .type = NLA_U16 }, 5127 [NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL] = { .type = NLA_U16 }, 5128 [NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME] = { .type = NLA_U16 }, 5129 [NL80211_MESHCONF_HWMP_ROOTMODE] = { .type = NLA_U8 }, 5130 [NL80211_MESHCONF_HWMP_RANN_INTERVAL] = { .type = NLA_U16 }, 5131 [NL80211_MESHCONF_GATE_ANNOUNCEMENTS] = { .type = NLA_U8 }, 5132 [NL80211_MESHCONF_FORWARDING] = { .type = NLA_U8 }, 5133 [NL80211_MESHCONF_RSSI_THRESHOLD] = { .type = NLA_U32 }, 5134 [NL80211_MESHCONF_HT_OPMODE] = { .type = NLA_U16 }, 5135 [NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT] = { .type = NLA_U32 }, 5136 [NL80211_MESHCONF_HWMP_ROOT_INTERVAL] = { .type = NLA_U16 }, 5137 [NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL] = { .type = NLA_U16 }, 5138 [NL80211_MESHCONF_POWER_MODE] = { .type = NLA_U32 }, 5139 [NL80211_MESHCONF_AWAKE_WINDOW] = { .type = NLA_U16 }, 5140 [NL80211_MESHCONF_PLINK_TIMEOUT] = { .type = NLA_U32 }, 5141 }; 5142 5143 static const struct nla_policy 5144 nl80211_mesh_setup_params_policy[NL80211_MESH_SETUP_ATTR_MAX+1] = { 5145 [NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC] = { .type = NLA_U8 }, 5146 [NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL] = { .type = NLA_U8 }, 5147 [NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC] = { .type = NLA_U8 }, 5148 [NL80211_MESH_SETUP_USERSPACE_AUTH] = { .type = NLA_FLAG }, 5149 [NL80211_MESH_SETUP_AUTH_PROTOCOL] = { .type = NLA_U8 }, 5150 [NL80211_MESH_SETUP_USERSPACE_MPM] = { .type = NLA_FLAG }, 5151 [NL80211_MESH_SETUP_IE] = { .type = NLA_BINARY, 5152 .len = IEEE80211_MAX_DATA_LEN }, 5153 [NL80211_MESH_SETUP_USERSPACE_AMPE] = { .type = NLA_FLAG }, 5154 }; 5155 5156 static int nl80211_parse_mesh_config(struct genl_info *info, 5157 struct mesh_config *cfg, 5158 u32 *mask_out) 5159 { 5160 struct nlattr *tb[NL80211_MESHCONF_ATTR_MAX + 1]; 5161 u32 mask = 0; 5162 5163 #define FILL_IN_MESH_PARAM_IF_SET(tb, cfg, param, min, max, mask, attr, fn) \ 5164 do { \ 5165 if (tb[attr]) { \ 5166 if (fn(tb[attr]) < min || fn(tb[attr]) > max) \ 5167 return -EINVAL; \ 5168 cfg->param = fn(tb[attr]); \ 5169 mask |= (1 << (attr - 1)); \ 5170 } \ 5171 } while (0) 5172 5173 5174 if (!info->attrs[NL80211_ATTR_MESH_CONFIG]) 5175 return -EINVAL; 5176 if (nla_parse_nested(tb, NL80211_MESHCONF_ATTR_MAX, 5177 info->attrs[NL80211_ATTR_MESH_CONFIG], 5178 nl80211_meshconf_params_policy)) 5179 return -EINVAL; 5180 5181 /* This makes sure that there aren't more than 32 mesh config 5182 * parameters (otherwise our bitfield scheme would not work.) */ 5183 BUILD_BUG_ON(NL80211_MESHCONF_ATTR_MAX > 32); 5184 5185 /* Fill in the params struct */ 5186 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshRetryTimeout, 1, 255, 5187 mask, NL80211_MESHCONF_RETRY_TIMEOUT, 5188 nla_get_u16); 5189 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConfirmTimeout, 1, 255, 5190 mask, NL80211_MESHCONF_CONFIRM_TIMEOUT, 5191 nla_get_u16); 5192 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHoldingTimeout, 1, 255, 5193 mask, NL80211_MESHCONF_HOLDING_TIMEOUT, 5194 nla_get_u16); 5195 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxPeerLinks, 0, 255, 5196 mask, NL80211_MESHCONF_MAX_PEER_LINKS, 5197 nla_get_u16); 5198 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxRetries, 0, 16, 5199 mask, NL80211_MESHCONF_MAX_RETRIES, 5200 nla_get_u8); 5201 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshTTL, 1, 255, 5202 mask, NL80211_MESHCONF_TTL, nla_get_u8); 5203 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, element_ttl, 1, 255, 5204 mask, NL80211_MESHCONF_ELEMENT_TTL, 5205 nla_get_u8); 5206 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, auto_open_plinks, 0, 1, 5207 mask, NL80211_MESHCONF_AUTO_OPEN_PLINKS, 5208 nla_get_u8); 5209 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshNbrOffsetMaxNeighbor, 5210 1, 255, mask, 5211 NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR, 5212 nla_get_u32); 5213 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPmaxPREQretries, 0, 255, 5214 mask, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES, 5215 nla_get_u8); 5216 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, path_refresh_time, 1, 65535, 5217 mask, NL80211_MESHCONF_PATH_REFRESH_TIME, 5218 nla_get_u32); 5219 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, min_discovery_timeout, 1, 65535, 5220 mask, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT, 5221 nla_get_u16); 5222 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathTimeout, 5223 1, 65535, mask, 5224 NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT, 5225 nla_get_u32); 5226 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPpreqMinInterval, 5227 1, 65535, mask, 5228 NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL, 5229 nla_get_u16); 5230 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPperrMinInterval, 5231 1, 65535, mask, 5232 NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL, 5233 nla_get_u16); 5234 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, 5235 dot11MeshHWMPnetDiameterTraversalTime, 5236 1, 65535, mask, 5237 NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME, 5238 nla_get_u16); 5239 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRootMode, 0, 4, 5240 mask, NL80211_MESHCONF_HWMP_ROOTMODE, 5241 nla_get_u8); 5242 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRannInterval, 1, 65535, 5243 mask, NL80211_MESHCONF_HWMP_RANN_INTERVAL, 5244 nla_get_u16); 5245 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, 5246 dot11MeshGateAnnouncementProtocol, 0, 1, 5247 mask, NL80211_MESHCONF_GATE_ANNOUNCEMENTS, 5248 nla_get_u8); 5249 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshForwarding, 0, 1, 5250 mask, NL80211_MESHCONF_FORWARDING, 5251 nla_get_u8); 5252 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, rssi_threshold, -255, 0, 5253 mask, NL80211_MESHCONF_RSSI_THRESHOLD, 5254 nla_get_s32); 5255 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, ht_opmode, 0, 16, 5256 mask, NL80211_MESHCONF_HT_OPMODE, 5257 nla_get_u16); 5258 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathToRootTimeout, 5259 1, 65535, mask, 5260 NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT, 5261 nla_get_u32); 5262 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMProotInterval, 1, 65535, 5263 mask, NL80211_MESHCONF_HWMP_ROOT_INTERVAL, 5264 nla_get_u16); 5265 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, 5266 dot11MeshHWMPconfirmationInterval, 5267 1, 65535, mask, 5268 NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL, 5269 nla_get_u16); 5270 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, power_mode, 5271 NL80211_MESH_POWER_ACTIVE, 5272 NL80211_MESH_POWER_MAX, 5273 mask, NL80211_MESHCONF_POWER_MODE, 5274 nla_get_u32); 5275 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshAwakeWindowDuration, 5276 0, 65535, mask, 5277 NL80211_MESHCONF_AWAKE_WINDOW, nla_get_u16); 5278 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, plink_timeout, 1, 0xffffffff, 5279 mask, NL80211_MESHCONF_PLINK_TIMEOUT, 5280 nla_get_u32); 5281 if (mask_out) 5282 *mask_out = mask; 5283 5284 return 0; 5285 5286 #undef FILL_IN_MESH_PARAM_IF_SET 5287 } 5288 5289 static int nl80211_parse_mesh_setup(struct genl_info *info, 5290 struct mesh_setup *setup) 5291 { 5292 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 5293 struct nlattr *tb[NL80211_MESH_SETUP_ATTR_MAX + 1]; 5294 5295 if (!info->attrs[NL80211_ATTR_MESH_SETUP]) 5296 return -EINVAL; 5297 if (nla_parse_nested(tb, NL80211_MESH_SETUP_ATTR_MAX, 5298 info->attrs[NL80211_ATTR_MESH_SETUP], 5299 nl80211_mesh_setup_params_policy)) 5300 return -EINVAL; 5301 5302 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC]) 5303 setup->sync_method = 5304 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])) ? 5305 IEEE80211_SYNC_METHOD_VENDOR : 5306 IEEE80211_SYNC_METHOD_NEIGHBOR_OFFSET; 5307 5308 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL]) 5309 setup->path_sel_proto = 5310 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])) ? 5311 IEEE80211_PATH_PROTOCOL_VENDOR : 5312 IEEE80211_PATH_PROTOCOL_HWMP; 5313 5314 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC]) 5315 setup->path_metric = 5316 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])) ? 5317 IEEE80211_PATH_METRIC_VENDOR : 5318 IEEE80211_PATH_METRIC_AIRTIME; 5319 5320 5321 if (tb[NL80211_MESH_SETUP_IE]) { 5322 struct nlattr *ieattr = 5323 tb[NL80211_MESH_SETUP_IE]; 5324 if (!is_valid_ie_attr(ieattr)) 5325 return -EINVAL; 5326 setup->ie = nla_data(ieattr); 5327 setup->ie_len = nla_len(ieattr); 5328 } 5329 if (tb[NL80211_MESH_SETUP_USERSPACE_MPM] && 5330 !(rdev->wiphy.features & NL80211_FEATURE_USERSPACE_MPM)) 5331 return -EINVAL; 5332 setup->user_mpm = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_MPM]); 5333 setup->is_authenticated = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AUTH]); 5334 setup->is_secure = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AMPE]); 5335 if (setup->is_secure) 5336 setup->user_mpm = true; 5337 5338 if (tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]) { 5339 if (!setup->user_mpm) 5340 return -EINVAL; 5341 setup->auth_id = 5342 nla_get_u8(tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]); 5343 } 5344 5345 return 0; 5346 } 5347 5348 static int nl80211_update_mesh_config(struct sk_buff *skb, 5349 struct genl_info *info) 5350 { 5351 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 5352 struct net_device *dev = info->user_ptr[1]; 5353 struct wireless_dev *wdev = dev->ieee80211_ptr; 5354 struct mesh_config cfg; 5355 u32 mask; 5356 int err; 5357 5358 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) 5359 return -EOPNOTSUPP; 5360 5361 if (!rdev->ops->update_mesh_config) 5362 return -EOPNOTSUPP; 5363 5364 err = nl80211_parse_mesh_config(info, &cfg, &mask); 5365 if (err) 5366 return err; 5367 5368 wdev_lock(wdev); 5369 if (!wdev->mesh_id_len) 5370 err = -ENOLINK; 5371 5372 if (!err) 5373 err = rdev_update_mesh_config(rdev, dev, mask, &cfg); 5374 5375 wdev_unlock(wdev); 5376 5377 return err; 5378 } 5379 5380 static int nl80211_put_regdom(const struct ieee80211_regdomain *regdom, 5381 struct sk_buff *msg) 5382 { 5383 struct nlattr *nl_reg_rules; 5384 unsigned int i; 5385 5386 if (nla_put_string(msg, NL80211_ATTR_REG_ALPHA2, regdom->alpha2) || 5387 (regdom->dfs_region && 5388 nla_put_u8(msg, NL80211_ATTR_DFS_REGION, regdom->dfs_region))) 5389 goto nla_put_failure; 5390 5391 nl_reg_rules = nla_nest_start(msg, NL80211_ATTR_REG_RULES); 5392 if (!nl_reg_rules) 5393 goto nla_put_failure; 5394 5395 for (i = 0; i < regdom->n_reg_rules; i++) { 5396 struct nlattr *nl_reg_rule; 5397 const struct ieee80211_reg_rule *reg_rule; 5398 const struct ieee80211_freq_range *freq_range; 5399 const struct ieee80211_power_rule *power_rule; 5400 unsigned int max_bandwidth_khz; 5401 5402 reg_rule = ®dom->reg_rules[i]; 5403 freq_range = ®_rule->freq_range; 5404 power_rule = ®_rule->power_rule; 5405 5406 nl_reg_rule = nla_nest_start(msg, i); 5407 if (!nl_reg_rule) 5408 goto nla_put_failure; 5409 5410 max_bandwidth_khz = freq_range->max_bandwidth_khz; 5411 if (!max_bandwidth_khz) 5412 max_bandwidth_khz = reg_get_max_bandwidth(regdom, 5413 reg_rule); 5414 5415 if (nla_put_u32(msg, NL80211_ATTR_REG_RULE_FLAGS, 5416 reg_rule->flags) || 5417 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_START, 5418 freq_range->start_freq_khz) || 5419 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_END, 5420 freq_range->end_freq_khz) || 5421 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_MAX_BW, 5422 max_bandwidth_khz) || 5423 nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN, 5424 power_rule->max_antenna_gain) || 5425 nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_EIRP, 5426 power_rule->max_eirp) || 5427 nla_put_u32(msg, NL80211_ATTR_DFS_CAC_TIME, 5428 reg_rule->dfs_cac_ms)) 5429 goto nla_put_failure; 5430 5431 nla_nest_end(msg, nl_reg_rule); 5432 } 5433 5434 nla_nest_end(msg, nl_reg_rules); 5435 return 0; 5436 5437 nla_put_failure: 5438 return -EMSGSIZE; 5439 } 5440 5441 static int nl80211_get_reg_do(struct sk_buff *skb, struct genl_info *info) 5442 { 5443 const struct ieee80211_regdomain *regdom = NULL; 5444 struct cfg80211_registered_device *rdev; 5445 struct wiphy *wiphy = NULL; 5446 struct sk_buff *msg; 5447 void *hdr; 5448 5449 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 5450 if (!msg) 5451 return -ENOBUFS; 5452 5453 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0, 5454 NL80211_CMD_GET_REG); 5455 if (!hdr) 5456 goto put_failure; 5457 5458 if (info->attrs[NL80211_ATTR_WIPHY]) { 5459 bool self_managed; 5460 5461 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info); 5462 if (IS_ERR(rdev)) { 5463 nlmsg_free(msg); 5464 return PTR_ERR(rdev); 5465 } 5466 5467 wiphy = &rdev->wiphy; 5468 self_managed = wiphy->regulatory_flags & 5469 REGULATORY_WIPHY_SELF_MANAGED; 5470 regdom = get_wiphy_regdom(wiphy); 5471 5472 /* a self-managed-reg device must have a private regdom */ 5473 if (WARN_ON(!regdom && self_managed)) { 5474 nlmsg_free(msg); 5475 return -EINVAL; 5476 } 5477 5478 if (regdom && 5479 nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy))) 5480 goto nla_put_failure; 5481 } 5482 5483 if (!wiphy && reg_last_request_cell_base() && 5484 nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE, 5485 NL80211_USER_REG_HINT_CELL_BASE)) 5486 goto nla_put_failure; 5487 5488 rcu_read_lock(); 5489 5490 if (!regdom) 5491 regdom = rcu_dereference(cfg80211_regdomain); 5492 5493 if (nl80211_put_regdom(regdom, msg)) 5494 goto nla_put_failure_rcu; 5495 5496 rcu_read_unlock(); 5497 5498 genlmsg_end(msg, hdr); 5499 return genlmsg_reply(msg, info); 5500 5501 nla_put_failure_rcu: 5502 rcu_read_unlock(); 5503 nla_put_failure: 5504 genlmsg_cancel(msg, hdr); 5505 put_failure: 5506 nlmsg_free(msg); 5507 return -EMSGSIZE; 5508 } 5509 5510 static int nl80211_send_regdom(struct sk_buff *msg, struct netlink_callback *cb, 5511 u32 seq, int flags, struct wiphy *wiphy, 5512 const struct ieee80211_regdomain *regdom) 5513 { 5514 void *hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags, 5515 NL80211_CMD_GET_REG); 5516 5517 if (!hdr) 5518 return -1; 5519 5520 genl_dump_check_consistent(cb, hdr, &nl80211_fam); 5521 5522 if (nl80211_put_regdom(regdom, msg)) 5523 goto nla_put_failure; 5524 5525 if (!wiphy && reg_last_request_cell_base() && 5526 nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE, 5527 NL80211_USER_REG_HINT_CELL_BASE)) 5528 goto nla_put_failure; 5529 5530 if (wiphy && 5531 nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy))) 5532 goto nla_put_failure; 5533 5534 if (wiphy && wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED && 5535 nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG)) 5536 goto nla_put_failure; 5537 5538 genlmsg_end(msg, hdr); 5539 return 0; 5540 5541 nla_put_failure: 5542 genlmsg_cancel(msg, hdr); 5543 return -EMSGSIZE; 5544 } 5545 5546 static int nl80211_get_reg_dump(struct sk_buff *skb, 5547 struct netlink_callback *cb) 5548 { 5549 const struct ieee80211_regdomain *regdom = NULL; 5550 struct cfg80211_registered_device *rdev; 5551 int err, reg_idx, start = cb->args[2]; 5552 5553 rtnl_lock(); 5554 5555 if (cfg80211_regdomain && start == 0) { 5556 err = nl80211_send_regdom(skb, cb, cb->nlh->nlmsg_seq, 5557 NLM_F_MULTI, NULL, 5558 rtnl_dereference(cfg80211_regdomain)); 5559 if (err < 0) 5560 goto out_err; 5561 } 5562 5563 /* the global regdom is idx 0 */ 5564 reg_idx = 1; 5565 list_for_each_entry(rdev, &cfg80211_rdev_list, list) { 5566 regdom = get_wiphy_regdom(&rdev->wiphy); 5567 if (!regdom) 5568 continue; 5569 5570 if (++reg_idx <= start) 5571 continue; 5572 5573 err = nl80211_send_regdom(skb, cb, cb->nlh->nlmsg_seq, 5574 NLM_F_MULTI, &rdev->wiphy, regdom); 5575 if (err < 0) { 5576 reg_idx--; 5577 break; 5578 } 5579 } 5580 5581 cb->args[2] = reg_idx; 5582 err = skb->len; 5583 out_err: 5584 rtnl_unlock(); 5585 return err; 5586 } 5587 5588 static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info) 5589 { 5590 struct nlattr *tb[NL80211_REG_RULE_ATTR_MAX + 1]; 5591 struct nlattr *nl_reg_rule; 5592 char *alpha2; 5593 int rem_reg_rules, r; 5594 u32 num_rules = 0, rule_idx = 0, size_of_regd; 5595 enum nl80211_dfs_regions dfs_region = NL80211_DFS_UNSET; 5596 struct ieee80211_regdomain *rd; 5597 5598 if (!info->attrs[NL80211_ATTR_REG_ALPHA2]) 5599 return -EINVAL; 5600 5601 if (!info->attrs[NL80211_ATTR_REG_RULES]) 5602 return -EINVAL; 5603 5604 alpha2 = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]); 5605 5606 if (info->attrs[NL80211_ATTR_DFS_REGION]) 5607 dfs_region = nla_get_u8(info->attrs[NL80211_ATTR_DFS_REGION]); 5608 5609 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES], 5610 rem_reg_rules) { 5611 num_rules++; 5612 if (num_rules > NL80211_MAX_SUPP_REG_RULES) 5613 return -EINVAL; 5614 } 5615 5616 if (!reg_is_valid_request(alpha2)) 5617 return -EINVAL; 5618 5619 size_of_regd = sizeof(struct ieee80211_regdomain) + 5620 num_rules * sizeof(struct ieee80211_reg_rule); 5621 5622 rd = kzalloc(size_of_regd, GFP_KERNEL); 5623 if (!rd) 5624 return -ENOMEM; 5625 5626 rd->n_reg_rules = num_rules; 5627 rd->alpha2[0] = alpha2[0]; 5628 rd->alpha2[1] = alpha2[1]; 5629 5630 /* 5631 * Disable DFS master mode if the DFS region was 5632 * not supported or known on this kernel. 5633 */ 5634 if (reg_supported_dfs_region(dfs_region)) 5635 rd->dfs_region = dfs_region; 5636 5637 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES], 5638 rem_reg_rules) { 5639 r = nla_parse(tb, NL80211_REG_RULE_ATTR_MAX, 5640 nla_data(nl_reg_rule), nla_len(nl_reg_rule), 5641 reg_rule_policy); 5642 if (r) 5643 goto bad_reg; 5644 r = parse_reg_rule(tb, &rd->reg_rules[rule_idx]); 5645 if (r) 5646 goto bad_reg; 5647 5648 rule_idx++; 5649 5650 if (rule_idx > NL80211_MAX_SUPP_REG_RULES) { 5651 r = -EINVAL; 5652 goto bad_reg; 5653 } 5654 } 5655 5656 r = set_regdom(rd); 5657 /* set_regdom took ownership */ 5658 rd = NULL; 5659 5660 bad_reg: 5661 kfree(rd); 5662 return r; 5663 } 5664 5665 static int validate_scan_freqs(struct nlattr *freqs) 5666 { 5667 struct nlattr *attr1, *attr2; 5668 int n_channels = 0, tmp1, tmp2; 5669 5670 nla_for_each_nested(attr1, freqs, tmp1) { 5671 n_channels++; 5672 /* 5673 * Some hardware has a limited channel list for 5674 * scanning, and it is pretty much nonsensical 5675 * to scan for a channel twice, so disallow that 5676 * and don't require drivers to check that the 5677 * channel list they get isn't longer than what 5678 * they can scan, as long as they can scan all 5679 * the channels they registered at once. 5680 */ 5681 nla_for_each_nested(attr2, freqs, tmp2) 5682 if (attr1 != attr2 && 5683 nla_get_u32(attr1) == nla_get_u32(attr2)) 5684 return 0; 5685 } 5686 5687 return n_channels; 5688 } 5689 5690 static int nl80211_parse_random_mac(struct nlattr **attrs, 5691 u8 *mac_addr, u8 *mac_addr_mask) 5692 { 5693 int i; 5694 5695 if (!attrs[NL80211_ATTR_MAC] && !attrs[NL80211_ATTR_MAC_MASK]) { 5696 memset(mac_addr, 0, ETH_ALEN); 5697 memset(mac_addr_mask, 0, ETH_ALEN); 5698 mac_addr[0] = 0x2; 5699 mac_addr_mask[0] = 0x3; 5700 5701 return 0; 5702 } 5703 5704 /* need both or none */ 5705 if (!attrs[NL80211_ATTR_MAC] || !attrs[NL80211_ATTR_MAC_MASK]) 5706 return -EINVAL; 5707 5708 memcpy(mac_addr, nla_data(attrs[NL80211_ATTR_MAC]), ETH_ALEN); 5709 memcpy(mac_addr_mask, nla_data(attrs[NL80211_ATTR_MAC_MASK]), ETH_ALEN); 5710 5711 /* don't allow or configure an mcast address */ 5712 if (!is_multicast_ether_addr(mac_addr_mask) || 5713 is_multicast_ether_addr(mac_addr)) 5714 return -EINVAL; 5715 5716 /* 5717 * allow users to pass a MAC address that has bits set outside 5718 * of the mask, but don't bother drivers with having to deal 5719 * with such bits 5720 */ 5721 for (i = 0; i < ETH_ALEN; i++) 5722 mac_addr[i] &= mac_addr_mask[i]; 5723 5724 return 0; 5725 } 5726 5727 static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info) 5728 { 5729 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 5730 struct wireless_dev *wdev = info->user_ptr[1]; 5731 struct cfg80211_scan_request *request; 5732 struct nlattr *attr; 5733 struct wiphy *wiphy; 5734 int err, tmp, n_ssids = 0, n_channels, i; 5735 size_t ie_len; 5736 5737 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE])) 5738 return -EINVAL; 5739 5740 wiphy = &rdev->wiphy; 5741 5742 if (!rdev->ops->scan) 5743 return -EOPNOTSUPP; 5744 5745 if (rdev->scan_req || rdev->scan_msg) { 5746 err = -EBUSY; 5747 goto unlock; 5748 } 5749 5750 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) { 5751 n_channels = validate_scan_freqs( 5752 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]); 5753 if (!n_channels) { 5754 err = -EINVAL; 5755 goto unlock; 5756 } 5757 } else { 5758 n_channels = ieee80211_get_num_supported_channels(wiphy); 5759 } 5760 5761 if (info->attrs[NL80211_ATTR_SCAN_SSIDS]) 5762 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) 5763 n_ssids++; 5764 5765 if (n_ssids > wiphy->max_scan_ssids) { 5766 err = -EINVAL; 5767 goto unlock; 5768 } 5769 5770 if (info->attrs[NL80211_ATTR_IE]) 5771 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); 5772 else 5773 ie_len = 0; 5774 5775 if (ie_len > wiphy->max_scan_ie_len) { 5776 err = -EINVAL; 5777 goto unlock; 5778 } 5779 5780 request = kzalloc(sizeof(*request) 5781 + sizeof(*request->ssids) * n_ssids 5782 + sizeof(*request->channels) * n_channels 5783 + ie_len, GFP_KERNEL); 5784 if (!request) { 5785 err = -ENOMEM; 5786 goto unlock; 5787 } 5788 5789 if (n_ssids) 5790 request->ssids = (void *)&request->channels[n_channels]; 5791 request->n_ssids = n_ssids; 5792 if (ie_len) { 5793 if (n_ssids) 5794 request->ie = (void *)(request->ssids + n_ssids); 5795 else 5796 request->ie = (void *)(request->channels + n_channels); 5797 } 5798 5799 i = 0; 5800 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) { 5801 /* user specified, bail out if channel not found */ 5802 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_FREQUENCIES], tmp) { 5803 struct ieee80211_channel *chan; 5804 5805 chan = ieee80211_get_channel(wiphy, nla_get_u32(attr)); 5806 5807 if (!chan) { 5808 err = -EINVAL; 5809 goto out_free; 5810 } 5811 5812 /* ignore disabled channels */ 5813 if (chan->flags & IEEE80211_CHAN_DISABLED) 5814 continue; 5815 5816 request->channels[i] = chan; 5817 i++; 5818 } 5819 } else { 5820 enum ieee80211_band band; 5821 5822 /* all channels */ 5823 for (band = 0; band < IEEE80211_NUM_BANDS; band++) { 5824 int j; 5825 if (!wiphy->bands[band]) 5826 continue; 5827 for (j = 0; j < wiphy->bands[band]->n_channels; j++) { 5828 struct ieee80211_channel *chan; 5829 5830 chan = &wiphy->bands[band]->channels[j]; 5831 5832 if (chan->flags & IEEE80211_CHAN_DISABLED) 5833 continue; 5834 5835 request->channels[i] = chan; 5836 i++; 5837 } 5838 } 5839 } 5840 5841 if (!i) { 5842 err = -EINVAL; 5843 goto out_free; 5844 } 5845 5846 request->n_channels = i; 5847 5848 i = 0; 5849 if (n_ssids) { 5850 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) { 5851 if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) { 5852 err = -EINVAL; 5853 goto out_free; 5854 } 5855 request->ssids[i].ssid_len = nla_len(attr); 5856 memcpy(request->ssids[i].ssid, nla_data(attr), nla_len(attr)); 5857 i++; 5858 } 5859 } 5860 5861 if (info->attrs[NL80211_ATTR_IE]) { 5862 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); 5863 memcpy((void *)request->ie, 5864 nla_data(info->attrs[NL80211_ATTR_IE]), 5865 request->ie_len); 5866 } 5867 5868 for (i = 0; i < IEEE80211_NUM_BANDS; i++) 5869 if (wiphy->bands[i]) 5870 request->rates[i] = 5871 (1 << wiphy->bands[i]->n_bitrates) - 1; 5872 5873 if (info->attrs[NL80211_ATTR_SCAN_SUPP_RATES]) { 5874 nla_for_each_nested(attr, 5875 info->attrs[NL80211_ATTR_SCAN_SUPP_RATES], 5876 tmp) { 5877 enum ieee80211_band band = nla_type(attr); 5878 5879 if (band < 0 || band >= IEEE80211_NUM_BANDS) { 5880 err = -EINVAL; 5881 goto out_free; 5882 } 5883 5884 if (!wiphy->bands[band]) 5885 continue; 5886 5887 err = ieee80211_get_ratemask(wiphy->bands[band], 5888 nla_data(attr), 5889 nla_len(attr), 5890 &request->rates[band]); 5891 if (err) 5892 goto out_free; 5893 } 5894 } 5895 5896 if (info->attrs[NL80211_ATTR_SCAN_FLAGS]) { 5897 request->flags = nla_get_u32( 5898 info->attrs[NL80211_ATTR_SCAN_FLAGS]); 5899 if ((request->flags & NL80211_SCAN_FLAG_LOW_PRIORITY) && 5900 !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) { 5901 err = -EOPNOTSUPP; 5902 goto out_free; 5903 } 5904 5905 if (request->flags & NL80211_SCAN_FLAG_RANDOM_ADDR) { 5906 if (!(wiphy->features & 5907 NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR)) { 5908 err = -EOPNOTSUPP; 5909 goto out_free; 5910 } 5911 5912 if (wdev->current_bss) { 5913 err = -EOPNOTSUPP; 5914 goto out_free; 5915 } 5916 5917 err = nl80211_parse_random_mac(info->attrs, 5918 request->mac_addr, 5919 request->mac_addr_mask); 5920 if (err) 5921 goto out_free; 5922 } 5923 } 5924 5925 request->no_cck = 5926 nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]); 5927 5928 request->wdev = wdev; 5929 request->wiphy = &rdev->wiphy; 5930 request->scan_start = jiffies; 5931 5932 rdev->scan_req = request; 5933 err = rdev_scan(rdev, request); 5934 5935 if (!err) { 5936 nl80211_send_scan_start(rdev, wdev); 5937 if (wdev->netdev) 5938 dev_hold(wdev->netdev); 5939 } else { 5940 out_free: 5941 rdev->scan_req = NULL; 5942 kfree(request); 5943 } 5944 5945 unlock: 5946 return err; 5947 } 5948 5949 static struct cfg80211_sched_scan_request * 5950 nl80211_parse_sched_scan(struct wiphy *wiphy, struct wireless_dev *wdev, 5951 struct nlattr **attrs) 5952 { 5953 struct cfg80211_sched_scan_request *request; 5954 struct nlattr *attr; 5955 int err, tmp, n_ssids = 0, n_match_sets = 0, n_channels, i; 5956 u32 interval; 5957 enum ieee80211_band band; 5958 size_t ie_len; 5959 struct nlattr *tb[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1]; 5960 s32 default_match_rssi = NL80211_SCAN_RSSI_THOLD_OFF; 5961 5962 if (!is_valid_ie_attr(attrs[NL80211_ATTR_IE])) 5963 return ERR_PTR(-EINVAL); 5964 5965 if (!attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL]) 5966 return ERR_PTR(-EINVAL); 5967 5968 interval = nla_get_u32(attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL]); 5969 if (interval == 0) 5970 return ERR_PTR(-EINVAL); 5971 5972 if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) { 5973 n_channels = validate_scan_freqs( 5974 attrs[NL80211_ATTR_SCAN_FREQUENCIES]); 5975 if (!n_channels) 5976 return ERR_PTR(-EINVAL); 5977 } else { 5978 n_channels = ieee80211_get_num_supported_channels(wiphy); 5979 } 5980 5981 if (attrs[NL80211_ATTR_SCAN_SSIDS]) 5982 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS], 5983 tmp) 5984 n_ssids++; 5985 5986 if (n_ssids > wiphy->max_sched_scan_ssids) 5987 return ERR_PTR(-EINVAL); 5988 5989 /* 5990 * First, count the number of 'real' matchsets. Due to an issue with 5991 * the old implementation, matchsets containing only the RSSI attribute 5992 * (NL80211_SCHED_SCAN_MATCH_ATTR_RSSI) are considered as the 'default' 5993 * RSSI for all matchsets, rather than their own matchset for reporting 5994 * all APs with a strong RSSI. This is needed to be compatible with 5995 * older userspace that treated a matchset with only the RSSI as the 5996 * global RSSI for all other matchsets - if there are other matchsets. 5997 */ 5998 if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) { 5999 nla_for_each_nested(attr, 6000 attrs[NL80211_ATTR_SCHED_SCAN_MATCH], 6001 tmp) { 6002 struct nlattr *rssi; 6003 6004 err = nla_parse(tb, NL80211_SCHED_SCAN_MATCH_ATTR_MAX, 6005 nla_data(attr), nla_len(attr), 6006 nl80211_match_policy); 6007 if (err) 6008 return ERR_PTR(err); 6009 /* add other standalone attributes here */ 6010 if (tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID]) { 6011 n_match_sets++; 6012 continue; 6013 } 6014 rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI]; 6015 if (rssi) 6016 default_match_rssi = nla_get_s32(rssi); 6017 } 6018 } 6019 6020 /* However, if there's no other matchset, add the RSSI one */ 6021 if (!n_match_sets && default_match_rssi != NL80211_SCAN_RSSI_THOLD_OFF) 6022 n_match_sets = 1; 6023 6024 if (n_match_sets > wiphy->max_match_sets) 6025 return ERR_PTR(-EINVAL); 6026 6027 if (attrs[NL80211_ATTR_IE]) 6028 ie_len = nla_len(attrs[NL80211_ATTR_IE]); 6029 else 6030 ie_len = 0; 6031 6032 if (ie_len > wiphy->max_sched_scan_ie_len) 6033 return ERR_PTR(-EINVAL); 6034 6035 request = kzalloc(sizeof(*request) 6036 + sizeof(*request->ssids) * n_ssids 6037 + sizeof(*request->match_sets) * n_match_sets 6038 + sizeof(*request->channels) * n_channels 6039 + ie_len, GFP_KERNEL); 6040 if (!request) 6041 return ERR_PTR(-ENOMEM); 6042 6043 if (n_ssids) 6044 request->ssids = (void *)&request->channels[n_channels]; 6045 request->n_ssids = n_ssids; 6046 if (ie_len) { 6047 if (n_ssids) 6048 request->ie = (void *)(request->ssids + n_ssids); 6049 else 6050 request->ie = (void *)(request->channels + n_channels); 6051 } 6052 6053 if (n_match_sets) { 6054 if (request->ie) 6055 request->match_sets = (void *)(request->ie + ie_len); 6056 else if (n_ssids) 6057 request->match_sets = 6058 (void *)(request->ssids + n_ssids); 6059 else 6060 request->match_sets = 6061 (void *)(request->channels + n_channels); 6062 } 6063 request->n_match_sets = n_match_sets; 6064 6065 i = 0; 6066 if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) { 6067 /* user specified, bail out if channel not found */ 6068 nla_for_each_nested(attr, 6069 attrs[NL80211_ATTR_SCAN_FREQUENCIES], 6070 tmp) { 6071 struct ieee80211_channel *chan; 6072 6073 chan = ieee80211_get_channel(wiphy, nla_get_u32(attr)); 6074 6075 if (!chan) { 6076 err = -EINVAL; 6077 goto out_free; 6078 } 6079 6080 /* ignore disabled channels */ 6081 if (chan->flags & IEEE80211_CHAN_DISABLED) 6082 continue; 6083 6084 request->channels[i] = chan; 6085 i++; 6086 } 6087 } else { 6088 /* all channels */ 6089 for (band = 0; band < IEEE80211_NUM_BANDS; band++) { 6090 int j; 6091 if (!wiphy->bands[band]) 6092 continue; 6093 for (j = 0; j < wiphy->bands[band]->n_channels; j++) { 6094 struct ieee80211_channel *chan; 6095 6096 chan = &wiphy->bands[band]->channels[j]; 6097 6098 if (chan->flags & IEEE80211_CHAN_DISABLED) 6099 continue; 6100 6101 request->channels[i] = chan; 6102 i++; 6103 } 6104 } 6105 } 6106 6107 if (!i) { 6108 err = -EINVAL; 6109 goto out_free; 6110 } 6111 6112 request->n_channels = i; 6113 6114 i = 0; 6115 if (n_ssids) { 6116 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS], 6117 tmp) { 6118 if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) { 6119 err = -EINVAL; 6120 goto out_free; 6121 } 6122 request->ssids[i].ssid_len = nla_len(attr); 6123 memcpy(request->ssids[i].ssid, nla_data(attr), 6124 nla_len(attr)); 6125 i++; 6126 } 6127 } 6128 6129 i = 0; 6130 if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) { 6131 nla_for_each_nested(attr, 6132 attrs[NL80211_ATTR_SCHED_SCAN_MATCH], 6133 tmp) { 6134 struct nlattr *ssid, *rssi; 6135 6136 err = nla_parse(tb, NL80211_SCHED_SCAN_MATCH_ATTR_MAX, 6137 nla_data(attr), nla_len(attr), 6138 nl80211_match_policy); 6139 if (err) 6140 goto out_free; 6141 ssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID]; 6142 if (ssid) { 6143 if (WARN_ON(i >= n_match_sets)) { 6144 /* this indicates a programming error, 6145 * the loop above should have verified 6146 * things properly 6147 */ 6148 err = -EINVAL; 6149 goto out_free; 6150 } 6151 6152 if (nla_len(ssid) > IEEE80211_MAX_SSID_LEN) { 6153 err = -EINVAL; 6154 goto out_free; 6155 } 6156 memcpy(request->match_sets[i].ssid.ssid, 6157 nla_data(ssid), nla_len(ssid)); 6158 request->match_sets[i].ssid.ssid_len = 6159 nla_len(ssid); 6160 /* special attribute - old implemenation w/a */ 6161 request->match_sets[i].rssi_thold = 6162 default_match_rssi; 6163 rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI]; 6164 if (rssi) 6165 request->match_sets[i].rssi_thold = 6166 nla_get_s32(rssi); 6167 } 6168 i++; 6169 } 6170 6171 /* there was no other matchset, so the RSSI one is alone */ 6172 if (i == 0 && n_match_sets) 6173 request->match_sets[0].rssi_thold = default_match_rssi; 6174 6175 request->min_rssi_thold = INT_MAX; 6176 for (i = 0; i < n_match_sets; i++) 6177 request->min_rssi_thold = 6178 min(request->match_sets[i].rssi_thold, 6179 request->min_rssi_thold); 6180 } else { 6181 request->min_rssi_thold = NL80211_SCAN_RSSI_THOLD_OFF; 6182 } 6183 6184 if (ie_len) { 6185 request->ie_len = ie_len; 6186 memcpy((void *)request->ie, 6187 nla_data(attrs[NL80211_ATTR_IE]), 6188 request->ie_len); 6189 } 6190 6191 if (attrs[NL80211_ATTR_SCAN_FLAGS]) { 6192 request->flags = nla_get_u32( 6193 attrs[NL80211_ATTR_SCAN_FLAGS]); 6194 if ((request->flags & NL80211_SCAN_FLAG_LOW_PRIORITY) && 6195 !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) { 6196 err = -EOPNOTSUPP; 6197 goto out_free; 6198 } 6199 6200 if (request->flags & NL80211_SCAN_FLAG_RANDOM_ADDR) { 6201 u32 flg = NL80211_FEATURE_SCHED_SCAN_RANDOM_MAC_ADDR; 6202 6203 if (!wdev) /* must be net-detect */ 6204 flg = NL80211_FEATURE_ND_RANDOM_MAC_ADDR; 6205 6206 if (!(wiphy->features & flg)) { 6207 err = -EOPNOTSUPP; 6208 goto out_free; 6209 } 6210 6211 if (wdev && wdev->current_bss) { 6212 err = -EOPNOTSUPP; 6213 goto out_free; 6214 } 6215 6216 err = nl80211_parse_random_mac(attrs, request->mac_addr, 6217 request->mac_addr_mask); 6218 if (err) 6219 goto out_free; 6220 } 6221 } 6222 6223 if (attrs[NL80211_ATTR_SCHED_SCAN_DELAY]) 6224 request->delay = 6225 nla_get_u32(attrs[NL80211_ATTR_SCHED_SCAN_DELAY]); 6226 6227 request->interval = interval; 6228 request->scan_start = jiffies; 6229 6230 return request; 6231 6232 out_free: 6233 kfree(request); 6234 return ERR_PTR(err); 6235 } 6236 6237 static int nl80211_start_sched_scan(struct sk_buff *skb, 6238 struct genl_info *info) 6239 { 6240 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 6241 struct net_device *dev = info->user_ptr[1]; 6242 struct wireless_dev *wdev = dev->ieee80211_ptr; 6243 struct cfg80211_sched_scan_request *sched_scan_req; 6244 int err; 6245 6246 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) || 6247 !rdev->ops->sched_scan_start) 6248 return -EOPNOTSUPP; 6249 6250 if (rdev->sched_scan_req) 6251 return -EINPROGRESS; 6252 6253 sched_scan_req = nl80211_parse_sched_scan(&rdev->wiphy, wdev, 6254 info->attrs); 6255 6256 err = PTR_ERR_OR_ZERO(sched_scan_req); 6257 if (err) 6258 goto out_err; 6259 6260 err = rdev_sched_scan_start(rdev, dev, sched_scan_req); 6261 if (err) 6262 goto out_free; 6263 6264 sched_scan_req->dev = dev; 6265 sched_scan_req->wiphy = &rdev->wiphy; 6266 6267 if (info->attrs[NL80211_ATTR_SOCKET_OWNER]) 6268 sched_scan_req->owner_nlportid = info->snd_portid; 6269 6270 rcu_assign_pointer(rdev->sched_scan_req, sched_scan_req); 6271 6272 nl80211_send_sched_scan(rdev, dev, 6273 NL80211_CMD_START_SCHED_SCAN); 6274 return 0; 6275 6276 out_free: 6277 kfree(sched_scan_req); 6278 out_err: 6279 return err; 6280 } 6281 6282 static int nl80211_stop_sched_scan(struct sk_buff *skb, 6283 struct genl_info *info) 6284 { 6285 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 6286 6287 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) || 6288 !rdev->ops->sched_scan_stop) 6289 return -EOPNOTSUPP; 6290 6291 return __cfg80211_stop_sched_scan(rdev, false); 6292 } 6293 6294 static int nl80211_start_radar_detection(struct sk_buff *skb, 6295 struct genl_info *info) 6296 { 6297 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 6298 struct net_device *dev = info->user_ptr[1]; 6299 struct wireless_dev *wdev = dev->ieee80211_ptr; 6300 struct cfg80211_chan_def chandef; 6301 enum nl80211_dfs_regions dfs_region; 6302 unsigned int cac_time_ms; 6303 int err; 6304 6305 dfs_region = reg_get_dfs_region(wdev->wiphy); 6306 if (dfs_region == NL80211_DFS_UNSET) 6307 return -EINVAL; 6308 6309 err = nl80211_parse_chandef(rdev, info, &chandef); 6310 if (err) 6311 return err; 6312 6313 if (netif_carrier_ok(dev)) 6314 return -EBUSY; 6315 6316 if (wdev->cac_started) 6317 return -EBUSY; 6318 6319 err = cfg80211_chandef_dfs_required(wdev->wiphy, &chandef, 6320 wdev->iftype); 6321 if (err < 0) 6322 return err; 6323 6324 if (err == 0) 6325 return -EINVAL; 6326 6327 if (!cfg80211_chandef_dfs_usable(wdev->wiphy, &chandef)) 6328 return -EINVAL; 6329 6330 if (!rdev->ops->start_radar_detection) 6331 return -EOPNOTSUPP; 6332 6333 cac_time_ms = cfg80211_chandef_dfs_cac_time(&rdev->wiphy, &chandef); 6334 if (WARN_ON(!cac_time_ms)) 6335 cac_time_ms = IEEE80211_DFS_MIN_CAC_TIME_MS; 6336 6337 err = rdev->ops->start_radar_detection(&rdev->wiphy, dev, &chandef, 6338 cac_time_ms); 6339 if (!err) { 6340 wdev->chandef = chandef; 6341 wdev->cac_started = true; 6342 wdev->cac_start_time = jiffies; 6343 wdev->cac_time_ms = cac_time_ms; 6344 } 6345 return err; 6346 } 6347 6348 static int nl80211_channel_switch(struct sk_buff *skb, struct genl_info *info) 6349 { 6350 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 6351 struct net_device *dev = info->user_ptr[1]; 6352 struct wireless_dev *wdev = dev->ieee80211_ptr; 6353 struct cfg80211_csa_settings params; 6354 /* csa_attrs is defined static to avoid waste of stack size - this 6355 * function is called under RTNL lock, so this should not be a problem. 6356 */ 6357 static struct nlattr *csa_attrs[NL80211_ATTR_MAX+1]; 6358 int err; 6359 bool need_new_beacon = false; 6360 int len, i; 6361 u32 cs_count; 6362 6363 if (!rdev->ops->channel_switch || 6364 !(rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH)) 6365 return -EOPNOTSUPP; 6366 6367 switch (dev->ieee80211_ptr->iftype) { 6368 case NL80211_IFTYPE_AP: 6369 case NL80211_IFTYPE_P2P_GO: 6370 need_new_beacon = true; 6371 6372 /* useless if AP is not running */ 6373 if (!wdev->beacon_interval) 6374 return -ENOTCONN; 6375 break; 6376 case NL80211_IFTYPE_ADHOC: 6377 if (!wdev->ssid_len) 6378 return -ENOTCONN; 6379 break; 6380 case NL80211_IFTYPE_MESH_POINT: 6381 if (!wdev->mesh_id_len) 6382 return -ENOTCONN; 6383 break; 6384 default: 6385 return -EOPNOTSUPP; 6386 } 6387 6388 memset(¶ms, 0, sizeof(params)); 6389 6390 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] || 6391 !info->attrs[NL80211_ATTR_CH_SWITCH_COUNT]) 6392 return -EINVAL; 6393 6394 /* only important for AP, IBSS and mesh create IEs internally */ 6395 if (need_new_beacon && !info->attrs[NL80211_ATTR_CSA_IES]) 6396 return -EINVAL; 6397 6398 /* Even though the attribute is u32, the specification says 6399 * u8, so let's make sure we don't overflow. 6400 */ 6401 cs_count = nla_get_u32(info->attrs[NL80211_ATTR_CH_SWITCH_COUNT]); 6402 if (cs_count > 255) 6403 return -EINVAL; 6404 6405 params.count = cs_count; 6406 6407 if (!need_new_beacon) 6408 goto skip_beacons; 6409 6410 err = nl80211_parse_beacon(info->attrs, ¶ms.beacon_after); 6411 if (err) 6412 return err; 6413 6414 err = nla_parse_nested(csa_attrs, NL80211_ATTR_MAX, 6415 info->attrs[NL80211_ATTR_CSA_IES], 6416 nl80211_policy); 6417 if (err) 6418 return err; 6419 6420 err = nl80211_parse_beacon(csa_attrs, ¶ms.beacon_csa); 6421 if (err) 6422 return err; 6423 6424 if (!csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]) 6425 return -EINVAL; 6426 6427 len = nla_len(csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]); 6428 if (!len || (len % sizeof(u16))) 6429 return -EINVAL; 6430 6431 params.n_counter_offsets_beacon = len / sizeof(u16); 6432 if (rdev->wiphy.max_num_csa_counters && 6433 (params.n_counter_offsets_beacon > 6434 rdev->wiphy.max_num_csa_counters)) 6435 return -EINVAL; 6436 6437 params.counter_offsets_beacon = 6438 nla_data(csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]); 6439 6440 /* sanity checks - counters should fit and be the same */ 6441 for (i = 0; i < params.n_counter_offsets_beacon; i++) { 6442 u16 offset = params.counter_offsets_beacon[i]; 6443 6444 if (offset >= params.beacon_csa.tail_len) 6445 return -EINVAL; 6446 6447 if (params.beacon_csa.tail[offset] != params.count) 6448 return -EINVAL; 6449 } 6450 6451 if (csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]) { 6452 len = nla_len(csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]); 6453 if (!len || (len % sizeof(u16))) 6454 return -EINVAL; 6455 6456 params.n_counter_offsets_presp = len / sizeof(u16); 6457 if (rdev->wiphy.max_num_csa_counters && 6458 (params.n_counter_offsets_beacon > 6459 rdev->wiphy.max_num_csa_counters)) 6460 return -EINVAL; 6461 6462 params.counter_offsets_presp = 6463 nla_data(csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]); 6464 6465 /* sanity checks - counters should fit and be the same */ 6466 for (i = 0; i < params.n_counter_offsets_presp; i++) { 6467 u16 offset = params.counter_offsets_presp[i]; 6468 6469 if (offset >= params.beacon_csa.probe_resp_len) 6470 return -EINVAL; 6471 6472 if (params.beacon_csa.probe_resp[offset] != 6473 params.count) 6474 return -EINVAL; 6475 } 6476 } 6477 6478 skip_beacons: 6479 err = nl80211_parse_chandef(rdev, info, ¶ms.chandef); 6480 if (err) 6481 return err; 6482 6483 if (!cfg80211_reg_can_beacon(&rdev->wiphy, ¶ms.chandef, 6484 wdev->iftype)) 6485 return -EINVAL; 6486 6487 err = cfg80211_chandef_dfs_required(wdev->wiphy, 6488 ¶ms.chandef, 6489 wdev->iftype); 6490 if (err < 0) 6491 return err; 6492 6493 if (err > 0) 6494 params.radar_required = true; 6495 6496 if (info->attrs[NL80211_ATTR_CH_SWITCH_BLOCK_TX]) 6497 params.block_tx = true; 6498 6499 wdev_lock(wdev); 6500 err = rdev_channel_switch(rdev, dev, ¶ms); 6501 wdev_unlock(wdev); 6502 6503 return err; 6504 } 6505 6506 static int nl80211_send_bss(struct sk_buff *msg, struct netlink_callback *cb, 6507 u32 seq, int flags, 6508 struct cfg80211_registered_device *rdev, 6509 struct wireless_dev *wdev, 6510 struct cfg80211_internal_bss *intbss) 6511 { 6512 struct cfg80211_bss *res = &intbss->pub; 6513 const struct cfg80211_bss_ies *ies; 6514 void *hdr; 6515 struct nlattr *bss; 6516 6517 ASSERT_WDEV_LOCK(wdev); 6518 6519 hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags, 6520 NL80211_CMD_NEW_SCAN_RESULTS); 6521 if (!hdr) 6522 return -1; 6523 6524 genl_dump_check_consistent(cb, hdr, &nl80211_fam); 6525 6526 if (nla_put_u32(msg, NL80211_ATTR_GENERATION, rdev->bss_generation)) 6527 goto nla_put_failure; 6528 if (wdev->netdev && 6529 nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex)) 6530 goto nla_put_failure; 6531 if (nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev))) 6532 goto nla_put_failure; 6533 6534 bss = nla_nest_start(msg, NL80211_ATTR_BSS); 6535 if (!bss) 6536 goto nla_put_failure; 6537 if ((!is_zero_ether_addr(res->bssid) && 6538 nla_put(msg, NL80211_BSS_BSSID, ETH_ALEN, res->bssid))) 6539 goto nla_put_failure; 6540 6541 rcu_read_lock(); 6542 /* indicate whether we have probe response data or not */ 6543 if (rcu_access_pointer(res->proberesp_ies) && 6544 nla_put_flag(msg, NL80211_BSS_PRESP_DATA)) 6545 goto fail_unlock_rcu; 6546 6547 /* this pointer prefers to be pointed to probe response data 6548 * but is always valid 6549 */ 6550 ies = rcu_dereference(res->ies); 6551 if (ies) { 6552 if (nla_put_u64(msg, NL80211_BSS_TSF, ies->tsf)) 6553 goto fail_unlock_rcu; 6554 if (ies->len && nla_put(msg, NL80211_BSS_INFORMATION_ELEMENTS, 6555 ies->len, ies->data)) 6556 goto fail_unlock_rcu; 6557 } 6558 6559 /* and this pointer is always (unless driver didn't know) beacon data */ 6560 ies = rcu_dereference(res->beacon_ies); 6561 if (ies && ies->from_beacon) { 6562 if (nla_put_u64(msg, NL80211_BSS_BEACON_TSF, ies->tsf)) 6563 goto fail_unlock_rcu; 6564 if (ies->len && nla_put(msg, NL80211_BSS_BEACON_IES, 6565 ies->len, ies->data)) 6566 goto fail_unlock_rcu; 6567 } 6568 rcu_read_unlock(); 6569 6570 if (res->beacon_interval && 6571 nla_put_u16(msg, NL80211_BSS_BEACON_INTERVAL, res->beacon_interval)) 6572 goto nla_put_failure; 6573 if (nla_put_u16(msg, NL80211_BSS_CAPABILITY, res->capability) || 6574 nla_put_u32(msg, NL80211_BSS_FREQUENCY, res->channel->center_freq) || 6575 nla_put_u32(msg, NL80211_BSS_CHAN_WIDTH, res->scan_width) || 6576 nla_put_u32(msg, NL80211_BSS_SEEN_MS_AGO, 6577 jiffies_to_msecs(jiffies - intbss->ts))) 6578 goto nla_put_failure; 6579 6580 switch (rdev->wiphy.signal_type) { 6581 case CFG80211_SIGNAL_TYPE_MBM: 6582 if (nla_put_u32(msg, NL80211_BSS_SIGNAL_MBM, res->signal)) 6583 goto nla_put_failure; 6584 break; 6585 case CFG80211_SIGNAL_TYPE_UNSPEC: 6586 if (nla_put_u8(msg, NL80211_BSS_SIGNAL_UNSPEC, res->signal)) 6587 goto nla_put_failure; 6588 break; 6589 default: 6590 break; 6591 } 6592 6593 switch (wdev->iftype) { 6594 case NL80211_IFTYPE_P2P_CLIENT: 6595 case NL80211_IFTYPE_STATION: 6596 if (intbss == wdev->current_bss && 6597 nla_put_u32(msg, NL80211_BSS_STATUS, 6598 NL80211_BSS_STATUS_ASSOCIATED)) 6599 goto nla_put_failure; 6600 break; 6601 case NL80211_IFTYPE_ADHOC: 6602 if (intbss == wdev->current_bss && 6603 nla_put_u32(msg, NL80211_BSS_STATUS, 6604 NL80211_BSS_STATUS_IBSS_JOINED)) 6605 goto nla_put_failure; 6606 break; 6607 default: 6608 break; 6609 } 6610 6611 nla_nest_end(msg, bss); 6612 6613 genlmsg_end(msg, hdr); 6614 return 0; 6615 6616 fail_unlock_rcu: 6617 rcu_read_unlock(); 6618 nla_put_failure: 6619 genlmsg_cancel(msg, hdr); 6620 return -EMSGSIZE; 6621 } 6622 6623 static int nl80211_dump_scan(struct sk_buff *skb, struct netlink_callback *cb) 6624 { 6625 struct cfg80211_registered_device *rdev; 6626 struct cfg80211_internal_bss *scan; 6627 struct wireless_dev *wdev; 6628 int start = cb->args[2], idx = 0; 6629 int err; 6630 6631 err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev); 6632 if (err) 6633 return err; 6634 6635 wdev_lock(wdev); 6636 spin_lock_bh(&rdev->bss_lock); 6637 cfg80211_bss_expire(rdev); 6638 6639 cb->seq = rdev->bss_generation; 6640 6641 list_for_each_entry(scan, &rdev->bss_list, list) { 6642 if (++idx <= start) 6643 continue; 6644 if (nl80211_send_bss(skb, cb, 6645 cb->nlh->nlmsg_seq, NLM_F_MULTI, 6646 rdev, wdev, scan) < 0) { 6647 idx--; 6648 break; 6649 } 6650 } 6651 6652 spin_unlock_bh(&rdev->bss_lock); 6653 wdev_unlock(wdev); 6654 6655 cb->args[2] = idx; 6656 nl80211_finish_wdev_dump(rdev); 6657 6658 return skb->len; 6659 } 6660 6661 static int nl80211_send_survey(struct sk_buff *msg, u32 portid, u32 seq, 6662 int flags, struct net_device *dev, 6663 bool allow_radio_stats, 6664 struct survey_info *survey) 6665 { 6666 void *hdr; 6667 struct nlattr *infoattr; 6668 6669 /* skip radio stats if userspace didn't request them */ 6670 if (!survey->channel && !allow_radio_stats) 6671 return 0; 6672 6673 hdr = nl80211hdr_put(msg, portid, seq, flags, 6674 NL80211_CMD_NEW_SURVEY_RESULTS); 6675 if (!hdr) 6676 return -ENOMEM; 6677 6678 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex)) 6679 goto nla_put_failure; 6680 6681 infoattr = nla_nest_start(msg, NL80211_ATTR_SURVEY_INFO); 6682 if (!infoattr) 6683 goto nla_put_failure; 6684 6685 if (survey->channel && 6686 nla_put_u32(msg, NL80211_SURVEY_INFO_FREQUENCY, 6687 survey->channel->center_freq)) 6688 goto nla_put_failure; 6689 6690 if ((survey->filled & SURVEY_INFO_NOISE_DBM) && 6691 nla_put_u8(msg, NL80211_SURVEY_INFO_NOISE, survey->noise)) 6692 goto nla_put_failure; 6693 if ((survey->filled & SURVEY_INFO_IN_USE) && 6694 nla_put_flag(msg, NL80211_SURVEY_INFO_IN_USE)) 6695 goto nla_put_failure; 6696 if ((survey->filled & SURVEY_INFO_TIME) && 6697 nla_put_u64(msg, NL80211_SURVEY_INFO_TIME, 6698 survey->time)) 6699 goto nla_put_failure; 6700 if ((survey->filled & SURVEY_INFO_TIME_BUSY) && 6701 nla_put_u64(msg, NL80211_SURVEY_INFO_TIME_BUSY, 6702 survey->time_busy)) 6703 goto nla_put_failure; 6704 if ((survey->filled & SURVEY_INFO_TIME_EXT_BUSY) && 6705 nla_put_u64(msg, NL80211_SURVEY_INFO_TIME_EXT_BUSY, 6706 survey->time_ext_busy)) 6707 goto nla_put_failure; 6708 if ((survey->filled & SURVEY_INFO_TIME_RX) && 6709 nla_put_u64(msg, NL80211_SURVEY_INFO_TIME_RX, 6710 survey->time_rx)) 6711 goto nla_put_failure; 6712 if ((survey->filled & SURVEY_INFO_TIME_TX) && 6713 nla_put_u64(msg, NL80211_SURVEY_INFO_TIME_TX, 6714 survey->time_tx)) 6715 goto nla_put_failure; 6716 if ((survey->filled & SURVEY_INFO_TIME_SCAN) && 6717 nla_put_u64(msg, NL80211_SURVEY_INFO_TIME_SCAN, 6718 survey->time_scan)) 6719 goto nla_put_failure; 6720 6721 nla_nest_end(msg, infoattr); 6722 6723 genlmsg_end(msg, hdr); 6724 return 0; 6725 6726 nla_put_failure: 6727 genlmsg_cancel(msg, hdr); 6728 return -EMSGSIZE; 6729 } 6730 6731 static int nl80211_dump_survey(struct sk_buff *skb, struct netlink_callback *cb) 6732 { 6733 struct survey_info survey; 6734 struct cfg80211_registered_device *rdev; 6735 struct wireless_dev *wdev; 6736 int survey_idx = cb->args[2]; 6737 int res; 6738 bool radio_stats; 6739 6740 res = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev); 6741 if (res) 6742 return res; 6743 6744 /* prepare_wdev_dump parsed the attributes */ 6745 radio_stats = nl80211_fam.attrbuf[NL80211_ATTR_SURVEY_RADIO_STATS]; 6746 6747 if (!wdev->netdev) { 6748 res = -EINVAL; 6749 goto out_err; 6750 } 6751 6752 if (!rdev->ops->dump_survey) { 6753 res = -EOPNOTSUPP; 6754 goto out_err; 6755 } 6756 6757 while (1) { 6758 res = rdev_dump_survey(rdev, wdev->netdev, survey_idx, &survey); 6759 if (res == -ENOENT) 6760 break; 6761 if (res) 6762 goto out_err; 6763 6764 /* don't send disabled channels, but do send non-channel data */ 6765 if (survey.channel && 6766 survey.channel->flags & IEEE80211_CHAN_DISABLED) { 6767 survey_idx++; 6768 continue; 6769 } 6770 6771 if (nl80211_send_survey(skb, 6772 NETLINK_CB(cb->skb).portid, 6773 cb->nlh->nlmsg_seq, NLM_F_MULTI, 6774 wdev->netdev, radio_stats, &survey) < 0) 6775 goto out; 6776 survey_idx++; 6777 } 6778 6779 out: 6780 cb->args[2] = survey_idx; 6781 res = skb->len; 6782 out_err: 6783 nl80211_finish_wdev_dump(rdev); 6784 return res; 6785 } 6786 6787 static bool nl80211_valid_wpa_versions(u32 wpa_versions) 6788 { 6789 return !(wpa_versions & ~(NL80211_WPA_VERSION_1 | 6790 NL80211_WPA_VERSION_2)); 6791 } 6792 6793 static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info) 6794 { 6795 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 6796 struct net_device *dev = info->user_ptr[1]; 6797 struct ieee80211_channel *chan; 6798 const u8 *bssid, *ssid, *ie = NULL, *sae_data = NULL; 6799 int err, ssid_len, ie_len = 0, sae_data_len = 0; 6800 enum nl80211_auth_type auth_type; 6801 struct key_parse key; 6802 bool local_state_change; 6803 6804 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE])) 6805 return -EINVAL; 6806 6807 if (!info->attrs[NL80211_ATTR_MAC]) 6808 return -EINVAL; 6809 6810 if (!info->attrs[NL80211_ATTR_AUTH_TYPE]) 6811 return -EINVAL; 6812 6813 if (!info->attrs[NL80211_ATTR_SSID]) 6814 return -EINVAL; 6815 6816 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ]) 6817 return -EINVAL; 6818 6819 err = nl80211_parse_key(info, &key); 6820 if (err) 6821 return err; 6822 6823 if (key.idx >= 0) { 6824 if (key.type != -1 && key.type != NL80211_KEYTYPE_GROUP) 6825 return -EINVAL; 6826 if (!key.p.key || !key.p.key_len) 6827 return -EINVAL; 6828 if ((key.p.cipher != WLAN_CIPHER_SUITE_WEP40 || 6829 key.p.key_len != WLAN_KEY_LEN_WEP40) && 6830 (key.p.cipher != WLAN_CIPHER_SUITE_WEP104 || 6831 key.p.key_len != WLAN_KEY_LEN_WEP104)) 6832 return -EINVAL; 6833 if (key.idx > 4) 6834 return -EINVAL; 6835 } else { 6836 key.p.key_len = 0; 6837 key.p.key = NULL; 6838 } 6839 6840 if (key.idx >= 0) { 6841 int i; 6842 bool ok = false; 6843 for (i = 0; i < rdev->wiphy.n_cipher_suites; i++) { 6844 if (key.p.cipher == rdev->wiphy.cipher_suites[i]) { 6845 ok = true; 6846 break; 6847 } 6848 } 6849 if (!ok) 6850 return -EINVAL; 6851 } 6852 6853 if (!rdev->ops->auth) 6854 return -EOPNOTSUPP; 6855 6856 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION && 6857 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) 6858 return -EOPNOTSUPP; 6859 6860 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]); 6861 chan = nl80211_get_valid_chan(&rdev->wiphy, 6862 info->attrs[NL80211_ATTR_WIPHY_FREQ]); 6863 if (!chan) 6864 return -EINVAL; 6865 6866 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]); 6867 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]); 6868 6869 if (info->attrs[NL80211_ATTR_IE]) { 6870 ie = nla_data(info->attrs[NL80211_ATTR_IE]); 6871 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); 6872 } 6873 6874 auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]); 6875 if (!nl80211_valid_auth_type(rdev, auth_type, NL80211_CMD_AUTHENTICATE)) 6876 return -EINVAL; 6877 6878 if (auth_type == NL80211_AUTHTYPE_SAE && 6879 !info->attrs[NL80211_ATTR_SAE_DATA]) 6880 return -EINVAL; 6881 6882 if (info->attrs[NL80211_ATTR_SAE_DATA]) { 6883 if (auth_type != NL80211_AUTHTYPE_SAE) 6884 return -EINVAL; 6885 sae_data = nla_data(info->attrs[NL80211_ATTR_SAE_DATA]); 6886 sae_data_len = nla_len(info->attrs[NL80211_ATTR_SAE_DATA]); 6887 /* need to include at least Auth Transaction and Status Code */ 6888 if (sae_data_len < 4) 6889 return -EINVAL; 6890 } 6891 6892 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE]; 6893 6894 /* 6895 * Since we no longer track auth state, ignore 6896 * requests to only change local state. 6897 */ 6898 if (local_state_change) 6899 return 0; 6900 6901 wdev_lock(dev->ieee80211_ptr); 6902 err = cfg80211_mlme_auth(rdev, dev, chan, auth_type, bssid, 6903 ssid, ssid_len, ie, ie_len, 6904 key.p.key, key.p.key_len, key.idx, 6905 sae_data, sae_data_len); 6906 wdev_unlock(dev->ieee80211_ptr); 6907 return err; 6908 } 6909 6910 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev, 6911 struct genl_info *info, 6912 struct cfg80211_crypto_settings *settings, 6913 int cipher_limit) 6914 { 6915 memset(settings, 0, sizeof(*settings)); 6916 6917 settings->control_port = info->attrs[NL80211_ATTR_CONTROL_PORT]; 6918 6919 if (info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) { 6920 u16 proto; 6921 proto = nla_get_u16( 6922 info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]); 6923 settings->control_port_ethertype = cpu_to_be16(proto); 6924 if (!(rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) && 6925 proto != ETH_P_PAE) 6926 return -EINVAL; 6927 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT]) 6928 settings->control_port_no_encrypt = true; 6929 } else 6930 settings->control_port_ethertype = cpu_to_be16(ETH_P_PAE); 6931 6932 if (info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]) { 6933 void *data; 6934 int len, i; 6935 6936 data = nla_data(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]); 6937 len = nla_len(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]); 6938 settings->n_ciphers_pairwise = len / sizeof(u32); 6939 6940 if (len % sizeof(u32)) 6941 return -EINVAL; 6942 6943 if (settings->n_ciphers_pairwise > cipher_limit) 6944 return -EINVAL; 6945 6946 memcpy(settings->ciphers_pairwise, data, len); 6947 6948 for (i = 0; i < settings->n_ciphers_pairwise; i++) 6949 if (!cfg80211_supported_cipher_suite( 6950 &rdev->wiphy, 6951 settings->ciphers_pairwise[i])) 6952 return -EINVAL; 6953 } 6954 6955 if (info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]) { 6956 settings->cipher_group = 6957 nla_get_u32(info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]); 6958 if (!cfg80211_supported_cipher_suite(&rdev->wiphy, 6959 settings->cipher_group)) 6960 return -EINVAL; 6961 } 6962 6963 if (info->attrs[NL80211_ATTR_WPA_VERSIONS]) { 6964 settings->wpa_versions = 6965 nla_get_u32(info->attrs[NL80211_ATTR_WPA_VERSIONS]); 6966 if (!nl80211_valid_wpa_versions(settings->wpa_versions)) 6967 return -EINVAL; 6968 } 6969 6970 if (info->attrs[NL80211_ATTR_AKM_SUITES]) { 6971 void *data; 6972 int len; 6973 6974 data = nla_data(info->attrs[NL80211_ATTR_AKM_SUITES]); 6975 len = nla_len(info->attrs[NL80211_ATTR_AKM_SUITES]); 6976 settings->n_akm_suites = len / sizeof(u32); 6977 6978 if (len % sizeof(u32)) 6979 return -EINVAL; 6980 6981 if (settings->n_akm_suites > NL80211_MAX_NR_AKM_SUITES) 6982 return -EINVAL; 6983 6984 memcpy(settings->akm_suites, data, len); 6985 } 6986 6987 return 0; 6988 } 6989 6990 static int nl80211_associate(struct sk_buff *skb, struct genl_info *info) 6991 { 6992 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 6993 struct net_device *dev = info->user_ptr[1]; 6994 struct ieee80211_channel *chan; 6995 struct cfg80211_assoc_request req = {}; 6996 const u8 *bssid, *ssid; 6997 int err, ssid_len = 0; 6998 6999 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE])) 7000 return -EINVAL; 7001 7002 if (!info->attrs[NL80211_ATTR_MAC] || 7003 !info->attrs[NL80211_ATTR_SSID] || 7004 !info->attrs[NL80211_ATTR_WIPHY_FREQ]) 7005 return -EINVAL; 7006 7007 if (!rdev->ops->assoc) 7008 return -EOPNOTSUPP; 7009 7010 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION && 7011 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) 7012 return -EOPNOTSUPP; 7013 7014 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]); 7015 7016 chan = nl80211_get_valid_chan(&rdev->wiphy, 7017 info->attrs[NL80211_ATTR_WIPHY_FREQ]); 7018 if (!chan) 7019 return -EINVAL; 7020 7021 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]); 7022 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]); 7023 7024 if (info->attrs[NL80211_ATTR_IE]) { 7025 req.ie = nla_data(info->attrs[NL80211_ATTR_IE]); 7026 req.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); 7027 } 7028 7029 if (info->attrs[NL80211_ATTR_USE_MFP]) { 7030 enum nl80211_mfp mfp = 7031 nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]); 7032 if (mfp == NL80211_MFP_REQUIRED) 7033 req.use_mfp = true; 7034 else if (mfp != NL80211_MFP_NO) 7035 return -EINVAL; 7036 } 7037 7038 if (info->attrs[NL80211_ATTR_PREV_BSSID]) 7039 req.prev_bssid = nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]); 7040 7041 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT])) 7042 req.flags |= ASSOC_REQ_DISABLE_HT; 7043 7044 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) 7045 memcpy(&req.ht_capa_mask, 7046 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]), 7047 sizeof(req.ht_capa_mask)); 7048 7049 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) { 7050 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) 7051 return -EINVAL; 7052 memcpy(&req.ht_capa, 7053 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]), 7054 sizeof(req.ht_capa)); 7055 } 7056 7057 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT])) 7058 req.flags |= ASSOC_REQ_DISABLE_VHT; 7059 7060 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]) 7061 memcpy(&req.vht_capa_mask, 7062 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]), 7063 sizeof(req.vht_capa_mask)); 7064 7065 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) { 7066 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]) 7067 return -EINVAL; 7068 memcpy(&req.vht_capa, 7069 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]), 7070 sizeof(req.vht_capa)); 7071 } 7072 7073 if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) { 7074 if (!(rdev->wiphy.features & 7075 NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) || 7076 !(rdev->wiphy.features & NL80211_FEATURE_QUIET)) 7077 return -EINVAL; 7078 req.flags |= ASSOC_REQ_USE_RRM; 7079 } 7080 7081 err = nl80211_crypto_settings(rdev, info, &req.crypto, 1); 7082 if (!err) { 7083 wdev_lock(dev->ieee80211_ptr); 7084 err = cfg80211_mlme_assoc(rdev, dev, chan, bssid, 7085 ssid, ssid_len, &req); 7086 wdev_unlock(dev->ieee80211_ptr); 7087 } 7088 7089 return err; 7090 } 7091 7092 static int nl80211_deauthenticate(struct sk_buff *skb, struct genl_info *info) 7093 { 7094 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 7095 struct net_device *dev = info->user_ptr[1]; 7096 const u8 *ie = NULL, *bssid; 7097 int ie_len = 0, err; 7098 u16 reason_code; 7099 bool local_state_change; 7100 7101 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE])) 7102 return -EINVAL; 7103 7104 if (!info->attrs[NL80211_ATTR_MAC]) 7105 return -EINVAL; 7106 7107 if (!info->attrs[NL80211_ATTR_REASON_CODE]) 7108 return -EINVAL; 7109 7110 if (!rdev->ops->deauth) 7111 return -EOPNOTSUPP; 7112 7113 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION && 7114 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) 7115 return -EOPNOTSUPP; 7116 7117 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]); 7118 7119 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]); 7120 if (reason_code == 0) { 7121 /* Reason Code 0 is reserved */ 7122 return -EINVAL; 7123 } 7124 7125 if (info->attrs[NL80211_ATTR_IE]) { 7126 ie = nla_data(info->attrs[NL80211_ATTR_IE]); 7127 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); 7128 } 7129 7130 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE]; 7131 7132 wdev_lock(dev->ieee80211_ptr); 7133 err = cfg80211_mlme_deauth(rdev, dev, bssid, ie, ie_len, reason_code, 7134 local_state_change); 7135 wdev_unlock(dev->ieee80211_ptr); 7136 return err; 7137 } 7138 7139 static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info) 7140 { 7141 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 7142 struct net_device *dev = info->user_ptr[1]; 7143 const u8 *ie = NULL, *bssid; 7144 int ie_len = 0, err; 7145 u16 reason_code; 7146 bool local_state_change; 7147 7148 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE])) 7149 return -EINVAL; 7150 7151 if (!info->attrs[NL80211_ATTR_MAC]) 7152 return -EINVAL; 7153 7154 if (!info->attrs[NL80211_ATTR_REASON_CODE]) 7155 return -EINVAL; 7156 7157 if (!rdev->ops->disassoc) 7158 return -EOPNOTSUPP; 7159 7160 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION && 7161 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) 7162 return -EOPNOTSUPP; 7163 7164 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]); 7165 7166 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]); 7167 if (reason_code == 0) { 7168 /* Reason Code 0 is reserved */ 7169 return -EINVAL; 7170 } 7171 7172 if (info->attrs[NL80211_ATTR_IE]) { 7173 ie = nla_data(info->attrs[NL80211_ATTR_IE]); 7174 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); 7175 } 7176 7177 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE]; 7178 7179 wdev_lock(dev->ieee80211_ptr); 7180 err = cfg80211_mlme_disassoc(rdev, dev, bssid, ie, ie_len, reason_code, 7181 local_state_change); 7182 wdev_unlock(dev->ieee80211_ptr); 7183 return err; 7184 } 7185 7186 static bool 7187 nl80211_parse_mcast_rate(struct cfg80211_registered_device *rdev, 7188 int mcast_rate[IEEE80211_NUM_BANDS], 7189 int rateval) 7190 { 7191 struct wiphy *wiphy = &rdev->wiphy; 7192 bool found = false; 7193 int band, i; 7194 7195 for (band = 0; band < IEEE80211_NUM_BANDS; band++) { 7196 struct ieee80211_supported_band *sband; 7197 7198 sband = wiphy->bands[band]; 7199 if (!sband) 7200 continue; 7201 7202 for (i = 0; i < sband->n_bitrates; i++) { 7203 if (sband->bitrates[i].bitrate == rateval) { 7204 mcast_rate[band] = i + 1; 7205 found = true; 7206 break; 7207 } 7208 } 7209 } 7210 7211 return found; 7212 } 7213 7214 static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info) 7215 { 7216 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 7217 struct net_device *dev = info->user_ptr[1]; 7218 struct cfg80211_ibss_params ibss; 7219 struct wiphy *wiphy; 7220 struct cfg80211_cached_keys *connkeys = NULL; 7221 int err; 7222 7223 memset(&ibss, 0, sizeof(ibss)); 7224 7225 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE])) 7226 return -EINVAL; 7227 7228 if (!info->attrs[NL80211_ATTR_SSID] || 7229 !nla_len(info->attrs[NL80211_ATTR_SSID])) 7230 return -EINVAL; 7231 7232 ibss.beacon_interval = 100; 7233 7234 if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) { 7235 ibss.beacon_interval = 7236 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]); 7237 if (ibss.beacon_interval < 1 || ibss.beacon_interval > 10000) 7238 return -EINVAL; 7239 } 7240 7241 if (!rdev->ops->join_ibss) 7242 return -EOPNOTSUPP; 7243 7244 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC) 7245 return -EOPNOTSUPP; 7246 7247 wiphy = &rdev->wiphy; 7248 7249 if (info->attrs[NL80211_ATTR_MAC]) { 7250 ibss.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]); 7251 7252 if (!is_valid_ether_addr(ibss.bssid)) 7253 return -EINVAL; 7254 } 7255 ibss.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]); 7256 ibss.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]); 7257 7258 if (info->attrs[NL80211_ATTR_IE]) { 7259 ibss.ie = nla_data(info->attrs[NL80211_ATTR_IE]); 7260 ibss.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); 7261 } 7262 7263 err = nl80211_parse_chandef(rdev, info, &ibss.chandef); 7264 if (err) 7265 return err; 7266 7267 if (!cfg80211_reg_can_beacon(&rdev->wiphy, &ibss.chandef, 7268 NL80211_IFTYPE_ADHOC)) 7269 return -EINVAL; 7270 7271 switch (ibss.chandef.width) { 7272 case NL80211_CHAN_WIDTH_5: 7273 case NL80211_CHAN_WIDTH_10: 7274 case NL80211_CHAN_WIDTH_20_NOHT: 7275 break; 7276 case NL80211_CHAN_WIDTH_20: 7277 case NL80211_CHAN_WIDTH_40: 7278 if (rdev->wiphy.features & NL80211_FEATURE_HT_IBSS) 7279 break; 7280 default: 7281 return -EINVAL; 7282 } 7283 7284 ibss.channel_fixed = !!info->attrs[NL80211_ATTR_FREQ_FIXED]; 7285 ibss.privacy = !!info->attrs[NL80211_ATTR_PRIVACY]; 7286 7287 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) { 7288 u8 *rates = 7289 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]); 7290 int n_rates = 7291 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]); 7292 struct ieee80211_supported_band *sband = 7293 wiphy->bands[ibss.chandef.chan->band]; 7294 7295 err = ieee80211_get_ratemask(sband, rates, n_rates, 7296 &ibss.basic_rates); 7297 if (err) 7298 return err; 7299 } 7300 7301 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) 7302 memcpy(&ibss.ht_capa_mask, 7303 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]), 7304 sizeof(ibss.ht_capa_mask)); 7305 7306 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) { 7307 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) 7308 return -EINVAL; 7309 memcpy(&ibss.ht_capa, 7310 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]), 7311 sizeof(ibss.ht_capa)); 7312 } 7313 7314 if (info->attrs[NL80211_ATTR_MCAST_RATE] && 7315 !nl80211_parse_mcast_rate(rdev, ibss.mcast_rate, 7316 nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE]))) 7317 return -EINVAL; 7318 7319 if (ibss.privacy && info->attrs[NL80211_ATTR_KEYS]) { 7320 bool no_ht = false; 7321 7322 connkeys = nl80211_parse_connkeys(rdev, 7323 info->attrs[NL80211_ATTR_KEYS], 7324 &no_ht); 7325 if (IS_ERR(connkeys)) 7326 return PTR_ERR(connkeys); 7327 7328 if ((ibss.chandef.width != NL80211_CHAN_WIDTH_20_NOHT) && 7329 no_ht) { 7330 kfree(connkeys); 7331 return -EINVAL; 7332 } 7333 } 7334 7335 ibss.control_port = 7336 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT]); 7337 7338 ibss.userspace_handles_dfs = 7339 nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS]); 7340 7341 err = cfg80211_join_ibss(rdev, dev, &ibss, connkeys); 7342 if (err) 7343 kzfree(connkeys); 7344 return err; 7345 } 7346 7347 static int nl80211_leave_ibss(struct sk_buff *skb, struct genl_info *info) 7348 { 7349 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 7350 struct net_device *dev = info->user_ptr[1]; 7351 7352 if (!rdev->ops->leave_ibss) 7353 return -EOPNOTSUPP; 7354 7355 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC) 7356 return -EOPNOTSUPP; 7357 7358 return cfg80211_leave_ibss(rdev, dev, false); 7359 } 7360 7361 static int nl80211_set_mcast_rate(struct sk_buff *skb, struct genl_info *info) 7362 { 7363 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 7364 struct net_device *dev = info->user_ptr[1]; 7365 int mcast_rate[IEEE80211_NUM_BANDS]; 7366 u32 nla_rate; 7367 int err; 7368 7369 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC && 7370 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT) 7371 return -EOPNOTSUPP; 7372 7373 if (!rdev->ops->set_mcast_rate) 7374 return -EOPNOTSUPP; 7375 7376 memset(mcast_rate, 0, sizeof(mcast_rate)); 7377 7378 if (!info->attrs[NL80211_ATTR_MCAST_RATE]) 7379 return -EINVAL; 7380 7381 nla_rate = nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE]); 7382 if (!nl80211_parse_mcast_rate(rdev, mcast_rate, nla_rate)) 7383 return -EINVAL; 7384 7385 err = rdev->ops->set_mcast_rate(&rdev->wiphy, dev, mcast_rate); 7386 7387 return err; 7388 } 7389 7390 static struct sk_buff * 7391 __cfg80211_alloc_vendor_skb(struct cfg80211_registered_device *rdev, 7392 int approxlen, u32 portid, u32 seq, 7393 enum nl80211_commands cmd, 7394 enum nl80211_attrs attr, 7395 const struct nl80211_vendor_cmd_info *info, 7396 gfp_t gfp) 7397 { 7398 struct sk_buff *skb; 7399 void *hdr; 7400 struct nlattr *data; 7401 7402 skb = nlmsg_new(approxlen + 100, gfp); 7403 if (!skb) 7404 return NULL; 7405 7406 hdr = nl80211hdr_put(skb, portid, seq, 0, cmd); 7407 if (!hdr) { 7408 kfree_skb(skb); 7409 return NULL; 7410 } 7411 7412 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx)) 7413 goto nla_put_failure; 7414 7415 if (info) { 7416 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_ID, 7417 info->vendor_id)) 7418 goto nla_put_failure; 7419 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_SUBCMD, 7420 info->subcmd)) 7421 goto nla_put_failure; 7422 } 7423 7424 data = nla_nest_start(skb, attr); 7425 7426 ((void **)skb->cb)[0] = rdev; 7427 ((void **)skb->cb)[1] = hdr; 7428 ((void **)skb->cb)[2] = data; 7429 7430 return skb; 7431 7432 nla_put_failure: 7433 kfree_skb(skb); 7434 return NULL; 7435 } 7436 7437 struct sk_buff *__cfg80211_alloc_event_skb(struct wiphy *wiphy, 7438 enum nl80211_commands cmd, 7439 enum nl80211_attrs attr, 7440 int vendor_event_idx, 7441 int approxlen, gfp_t gfp) 7442 { 7443 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 7444 const struct nl80211_vendor_cmd_info *info; 7445 7446 switch (cmd) { 7447 case NL80211_CMD_TESTMODE: 7448 if (WARN_ON(vendor_event_idx != -1)) 7449 return NULL; 7450 info = NULL; 7451 break; 7452 case NL80211_CMD_VENDOR: 7453 if (WARN_ON(vendor_event_idx < 0 || 7454 vendor_event_idx >= wiphy->n_vendor_events)) 7455 return NULL; 7456 info = &wiphy->vendor_events[vendor_event_idx]; 7457 break; 7458 default: 7459 WARN_ON(1); 7460 return NULL; 7461 } 7462 7463 return __cfg80211_alloc_vendor_skb(rdev, approxlen, 0, 0, 7464 cmd, attr, info, gfp); 7465 } 7466 EXPORT_SYMBOL(__cfg80211_alloc_event_skb); 7467 7468 void __cfg80211_send_event_skb(struct sk_buff *skb, gfp_t gfp) 7469 { 7470 struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0]; 7471 void *hdr = ((void **)skb->cb)[1]; 7472 struct nlattr *data = ((void **)skb->cb)[2]; 7473 enum nl80211_multicast_groups mcgrp = NL80211_MCGRP_TESTMODE; 7474 7475 /* clear CB data for netlink core to own from now on */ 7476 memset(skb->cb, 0, sizeof(skb->cb)); 7477 7478 nla_nest_end(skb, data); 7479 genlmsg_end(skb, hdr); 7480 7481 if (data->nla_type == NL80211_ATTR_VENDOR_DATA) 7482 mcgrp = NL80211_MCGRP_VENDOR; 7483 7484 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), skb, 0, 7485 mcgrp, gfp); 7486 } 7487 EXPORT_SYMBOL(__cfg80211_send_event_skb); 7488 7489 #ifdef CONFIG_NL80211_TESTMODE 7490 static int nl80211_testmode_do(struct sk_buff *skb, struct genl_info *info) 7491 { 7492 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 7493 struct wireless_dev *wdev = 7494 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs); 7495 int err; 7496 7497 if (!rdev->ops->testmode_cmd) 7498 return -EOPNOTSUPP; 7499 7500 if (IS_ERR(wdev)) { 7501 err = PTR_ERR(wdev); 7502 if (err != -EINVAL) 7503 return err; 7504 wdev = NULL; 7505 } else if (wdev->wiphy != &rdev->wiphy) { 7506 return -EINVAL; 7507 } 7508 7509 if (!info->attrs[NL80211_ATTR_TESTDATA]) 7510 return -EINVAL; 7511 7512 rdev->cur_cmd_info = info; 7513 err = rdev_testmode_cmd(rdev, wdev, 7514 nla_data(info->attrs[NL80211_ATTR_TESTDATA]), 7515 nla_len(info->attrs[NL80211_ATTR_TESTDATA])); 7516 rdev->cur_cmd_info = NULL; 7517 7518 return err; 7519 } 7520 7521 static int nl80211_testmode_dump(struct sk_buff *skb, 7522 struct netlink_callback *cb) 7523 { 7524 struct cfg80211_registered_device *rdev; 7525 int err; 7526 long phy_idx; 7527 void *data = NULL; 7528 int data_len = 0; 7529 7530 rtnl_lock(); 7531 7532 if (cb->args[0]) { 7533 /* 7534 * 0 is a valid index, but not valid for args[0], 7535 * so we need to offset by 1. 7536 */ 7537 phy_idx = cb->args[0] - 1; 7538 } else { 7539 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize, 7540 nl80211_fam.attrbuf, nl80211_fam.maxattr, 7541 nl80211_policy); 7542 if (err) 7543 goto out_err; 7544 7545 rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk), 7546 nl80211_fam.attrbuf); 7547 if (IS_ERR(rdev)) { 7548 err = PTR_ERR(rdev); 7549 goto out_err; 7550 } 7551 phy_idx = rdev->wiphy_idx; 7552 rdev = NULL; 7553 7554 if (nl80211_fam.attrbuf[NL80211_ATTR_TESTDATA]) 7555 cb->args[1] = 7556 (long)nl80211_fam.attrbuf[NL80211_ATTR_TESTDATA]; 7557 } 7558 7559 if (cb->args[1]) { 7560 data = nla_data((void *)cb->args[1]); 7561 data_len = nla_len((void *)cb->args[1]); 7562 } 7563 7564 rdev = cfg80211_rdev_by_wiphy_idx(phy_idx); 7565 if (!rdev) { 7566 err = -ENOENT; 7567 goto out_err; 7568 } 7569 7570 if (!rdev->ops->testmode_dump) { 7571 err = -EOPNOTSUPP; 7572 goto out_err; 7573 } 7574 7575 while (1) { 7576 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid, 7577 cb->nlh->nlmsg_seq, NLM_F_MULTI, 7578 NL80211_CMD_TESTMODE); 7579 struct nlattr *tmdata; 7580 7581 if (!hdr) 7582 break; 7583 7584 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, phy_idx)) { 7585 genlmsg_cancel(skb, hdr); 7586 break; 7587 } 7588 7589 tmdata = nla_nest_start(skb, NL80211_ATTR_TESTDATA); 7590 if (!tmdata) { 7591 genlmsg_cancel(skb, hdr); 7592 break; 7593 } 7594 err = rdev_testmode_dump(rdev, skb, cb, data, data_len); 7595 nla_nest_end(skb, tmdata); 7596 7597 if (err == -ENOBUFS || err == -ENOENT) { 7598 genlmsg_cancel(skb, hdr); 7599 break; 7600 } else if (err) { 7601 genlmsg_cancel(skb, hdr); 7602 goto out_err; 7603 } 7604 7605 genlmsg_end(skb, hdr); 7606 } 7607 7608 err = skb->len; 7609 /* see above */ 7610 cb->args[0] = phy_idx + 1; 7611 out_err: 7612 rtnl_unlock(); 7613 return err; 7614 } 7615 #endif 7616 7617 static int nl80211_connect(struct sk_buff *skb, struct genl_info *info) 7618 { 7619 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 7620 struct net_device *dev = info->user_ptr[1]; 7621 struct cfg80211_connect_params connect; 7622 struct wiphy *wiphy; 7623 struct cfg80211_cached_keys *connkeys = NULL; 7624 int err; 7625 7626 memset(&connect, 0, sizeof(connect)); 7627 7628 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE])) 7629 return -EINVAL; 7630 7631 if (!info->attrs[NL80211_ATTR_SSID] || 7632 !nla_len(info->attrs[NL80211_ATTR_SSID])) 7633 return -EINVAL; 7634 7635 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) { 7636 connect.auth_type = 7637 nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]); 7638 if (!nl80211_valid_auth_type(rdev, connect.auth_type, 7639 NL80211_CMD_CONNECT)) 7640 return -EINVAL; 7641 } else 7642 connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC; 7643 7644 connect.privacy = info->attrs[NL80211_ATTR_PRIVACY]; 7645 7646 err = nl80211_crypto_settings(rdev, info, &connect.crypto, 7647 NL80211_MAX_NR_CIPHER_SUITES); 7648 if (err) 7649 return err; 7650 7651 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION && 7652 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) 7653 return -EOPNOTSUPP; 7654 7655 wiphy = &rdev->wiphy; 7656 7657 connect.bg_scan_period = -1; 7658 if (info->attrs[NL80211_ATTR_BG_SCAN_PERIOD] && 7659 (wiphy->flags & WIPHY_FLAG_SUPPORTS_FW_ROAM)) { 7660 connect.bg_scan_period = 7661 nla_get_u16(info->attrs[NL80211_ATTR_BG_SCAN_PERIOD]); 7662 } 7663 7664 if (info->attrs[NL80211_ATTR_MAC]) 7665 connect.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]); 7666 else if (info->attrs[NL80211_ATTR_MAC_HINT]) 7667 connect.bssid_hint = 7668 nla_data(info->attrs[NL80211_ATTR_MAC_HINT]); 7669 connect.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]); 7670 connect.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]); 7671 7672 if (info->attrs[NL80211_ATTR_IE]) { 7673 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]); 7674 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); 7675 } 7676 7677 if (info->attrs[NL80211_ATTR_USE_MFP]) { 7678 connect.mfp = nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]); 7679 if (connect.mfp != NL80211_MFP_REQUIRED && 7680 connect.mfp != NL80211_MFP_NO) 7681 return -EINVAL; 7682 } else { 7683 connect.mfp = NL80211_MFP_NO; 7684 } 7685 7686 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) { 7687 connect.channel = nl80211_get_valid_chan( 7688 wiphy, info->attrs[NL80211_ATTR_WIPHY_FREQ]); 7689 if (!connect.channel) 7690 return -EINVAL; 7691 } else if (info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]) { 7692 connect.channel_hint = nl80211_get_valid_chan( 7693 wiphy, info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]); 7694 if (!connect.channel_hint) 7695 return -EINVAL; 7696 } 7697 7698 if (connect.privacy && info->attrs[NL80211_ATTR_KEYS]) { 7699 connkeys = nl80211_parse_connkeys(rdev, 7700 info->attrs[NL80211_ATTR_KEYS], NULL); 7701 if (IS_ERR(connkeys)) 7702 return PTR_ERR(connkeys); 7703 } 7704 7705 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT])) 7706 connect.flags |= ASSOC_REQ_DISABLE_HT; 7707 7708 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) 7709 memcpy(&connect.ht_capa_mask, 7710 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]), 7711 sizeof(connect.ht_capa_mask)); 7712 7713 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) { 7714 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) { 7715 kzfree(connkeys); 7716 return -EINVAL; 7717 } 7718 memcpy(&connect.ht_capa, 7719 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]), 7720 sizeof(connect.ht_capa)); 7721 } 7722 7723 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT])) 7724 connect.flags |= ASSOC_REQ_DISABLE_VHT; 7725 7726 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]) 7727 memcpy(&connect.vht_capa_mask, 7728 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]), 7729 sizeof(connect.vht_capa_mask)); 7730 7731 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) { 7732 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]) { 7733 kzfree(connkeys); 7734 return -EINVAL; 7735 } 7736 memcpy(&connect.vht_capa, 7737 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]), 7738 sizeof(connect.vht_capa)); 7739 } 7740 7741 if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) { 7742 if (!(rdev->wiphy.features & 7743 NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) || 7744 !(rdev->wiphy.features & NL80211_FEATURE_QUIET)) 7745 return -EINVAL; 7746 connect.flags |= ASSOC_REQ_USE_RRM; 7747 } 7748 7749 wdev_lock(dev->ieee80211_ptr); 7750 err = cfg80211_connect(rdev, dev, &connect, connkeys, NULL); 7751 wdev_unlock(dev->ieee80211_ptr); 7752 if (err) 7753 kzfree(connkeys); 7754 return err; 7755 } 7756 7757 static int nl80211_disconnect(struct sk_buff *skb, struct genl_info *info) 7758 { 7759 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 7760 struct net_device *dev = info->user_ptr[1]; 7761 u16 reason; 7762 int ret; 7763 7764 if (!info->attrs[NL80211_ATTR_REASON_CODE]) 7765 reason = WLAN_REASON_DEAUTH_LEAVING; 7766 else 7767 reason = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]); 7768 7769 if (reason == 0) 7770 return -EINVAL; 7771 7772 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION && 7773 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) 7774 return -EOPNOTSUPP; 7775 7776 wdev_lock(dev->ieee80211_ptr); 7777 ret = cfg80211_disconnect(rdev, dev, reason, true); 7778 wdev_unlock(dev->ieee80211_ptr); 7779 return ret; 7780 } 7781 7782 static int nl80211_wiphy_netns(struct sk_buff *skb, struct genl_info *info) 7783 { 7784 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 7785 struct net *net; 7786 int err; 7787 7788 if (info->attrs[NL80211_ATTR_PID]) { 7789 u32 pid = nla_get_u32(info->attrs[NL80211_ATTR_PID]); 7790 7791 net = get_net_ns_by_pid(pid); 7792 } else if (info->attrs[NL80211_ATTR_NETNS_FD]) { 7793 u32 fd = nla_get_u32(info->attrs[NL80211_ATTR_NETNS_FD]); 7794 7795 net = get_net_ns_by_fd(fd); 7796 } else { 7797 return -EINVAL; 7798 } 7799 7800 if (IS_ERR(net)) 7801 return PTR_ERR(net); 7802 7803 err = 0; 7804 7805 /* check if anything to do */ 7806 if (!net_eq(wiphy_net(&rdev->wiphy), net)) 7807 err = cfg80211_switch_netns(rdev, net); 7808 7809 put_net(net); 7810 return err; 7811 } 7812 7813 static int nl80211_setdel_pmksa(struct sk_buff *skb, struct genl_info *info) 7814 { 7815 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 7816 int (*rdev_ops)(struct wiphy *wiphy, struct net_device *dev, 7817 struct cfg80211_pmksa *pmksa) = NULL; 7818 struct net_device *dev = info->user_ptr[1]; 7819 struct cfg80211_pmksa pmksa; 7820 7821 memset(&pmksa, 0, sizeof(struct cfg80211_pmksa)); 7822 7823 if (!info->attrs[NL80211_ATTR_MAC]) 7824 return -EINVAL; 7825 7826 if (!info->attrs[NL80211_ATTR_PMKID]) 7827 return -EINVAL; 7828 7829 pmksa.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]); 7830 pmksa.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]); 7831 7832 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION && 7833 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) 7834 return -EOPNOTSUPP; 7835 7836 switch (info->genlhdr->cmd) { 7837 case NL80211_CMD_SET_PMKSA: 7838 rdev_ops = rdev->ops->set_pmksa; 7839 break; 7840 case NL80211_CMD_DEL_PMKSA: 7841 rdev_ops = rdev->ops->del_pmksa; 7842 break; 7843 default: 7844 WARN_ON(1); 7845 break; 7846 } 7847 7848 if (!rdev_ops) 7849 return -EOPNOTSUPP; 7850 7851 return rdev_ops(&rdev->wiphy, dev, &pmksa); 7852 } 7853 7854 static int nl80211_flush_pmksa(struct sk_buff *skb, struct genl_info *info) 7855 { 7856 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 7857 struct net_device *dev = info->user_ptr[1]; 7858 7859 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION && 7860 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) 7861 return -EOPNOTSUPP; 7862 7863 if (!rdev->ops->flush_pmksa) 7864 return -EOPNOTSUPP; 7865 7866 return rdev_flush_pmksa(rdev, dev); 7867 } 7868 7869 static int nl80211_tdls_mgmt(struct sk_buff *skb, struct genl_info *info) 7870 { 7871 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 7872 struct net_device *dev = info->user_ptr[1]; 7873 u8 action_code, dialog_token; 7874 u32 peer_capability = 0; 7875 u16 status_code; 7876 u8 *peer; 7877 bool initiator; 7878 7879 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) || 7880 !rdev->ops->tdls_mgmt) 7881 return -EOPNOTSUPP; 7882 7883 if (!info->attrs[NL80211_ATTR_TDLS_ACTION] || 7884 !info->attrs[NL80211_ATTR_STATUS_CODE] || 7885 !info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN] || 7886 !info->attrs[NL80211_ATTR_IE] || 7887 !info->attrs[NL80211_ATTR_MAC]) 7888 return -EINVAL; 7889 7890 peer = nla_data(info->attrs[NL80211_ATTR_MAC]); 7891 action_code = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_ACTION]); 7892 status_code = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]); 7893 dialog_token = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN]); 7894 initiator = nla_get_flag(info->attrs[NL80211_ATTR_TDLS_INITIATOR]); 7895 if (info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY]) 7896 peer_capability = 7897 nla_get_u32(info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY]); 7898 7899 return rdev_tdls_mgmt(rdev, dev, peer, action_code, 7900 dialog_token, status_code, peer_capability, 7901 initiator, 7902 nla_data(info->attrs[NL80211_ATTR_IE]), 7903 nla_len(info->attrs[NL80211_ATTR_IE])); 7904 } 7905 7906 static int nl80211_tdls_oper(struct sk_buff *skb, struct genl_info *info) 7907 { 7908 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 7909 struct net_device *dev = info->user_ptr[1]; 7910 enum nl80211_tdls_operation operation; 7911 u8 *peer; 7912 7913 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) || 7914 !rdev->ops->tdls_oper) 7915 return -EOPNOTSUPP; 7916 7917 if (!info->attrs[NL80211_ATTR_TDLS_OPERATION] || 7918 !info->attrs[NL80211_ATTR_MAC]) 7919 return -EINVAL; 7920 7921 operation = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_OPERATION]); 7922 peer = nla_data(info->attrs[NL80211_ATTR_MAC]); 7923 7924 return rdev_tdls_oper(rdev, dev, peer, operation); 7925 } 7926 7927 static int nl80211_remain_on_channel(struct sk_buff *skb, 7928 struct genl_info *info) 7929 { 7930 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 7931 struct wireless_dev *wdev = info->user_ptr[1]; 7932 struct cfg80211_chan_def chandef; 7933 struct sk_buff *msg; 7934 void *hdr; 7935 u64 cookie; 7936 u32 duration; 7937 int err; 7938 7939 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] || 7940 !info->attrs[NL80211_ATTR_DURATION]) 7941 return -EINVAL; 7942 7943 duration = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]); 7944 7945 if (!rdev->ops->remain_on_channel || 7946 !(rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL)) 7947 return -EOPNOTSUPP; 7948 7949 /* 7950 * We should be on that channel for at least a minimum amount of 7951 * time (10ms) but no longer than the driver supports. 7952 */ 7953 if (duration < NL80211_MIN_REMAIN_ON_CHANNEL_TIME || 7954 duration > rdev->wiphy.max_remain_on_channel_duration) 7955 return -EINVAL; 7956 7957 err = nl80211_parse_chandef(rdev, info, &chandef); 7958 if (err) 7959 return err; 7960 7961 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 7962 if (!msg) 7963 return -ENOMEM; 7964 7965 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0, 7966 NL80211_CMD_REMAIN_ON_CHANNEL); 7967 if (!hdr) { 7968 err = -ENOBUFS; 7969 goto free_msg; 7970 } 7971 7972 err = rdev_remain_on_channel(rdev, wdev, chandef.chan, 7973 duration, &cookie); 7974 7975 if (err) 7976 goto free_msg; 7977 7978 if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie)) 7979 goto nla_put_failure; 7980 7981 genlmsg_end(msg, hdr); 7982 7983 return genlmsg_reply(msg, info); 7984 7985 nla_put_failure: 7986 err = -ENOBUFS; 7987 free_msg: 7988 nlmsg_free(msg); 7989 return err; 7990 } 7991 7992 static int nl80211_cancel_remain_on_channel(struct sk_buff *skb, 7993 struct genl_info *info) 7994 { 7995 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 7996 struct wireless_dev *wdev = info->user_ptr[1]; 7997 u64 cookie; 7998 7999 if (!info->attrs[NL80211_ATTR_COOKIE]) 8000 return -EINVAL; 8001 8002 if (!rdev->ops->cancel_remain_on_channel) 8003 return -EOPNOTSUPP; 8004 8005 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]); 8006 8007 return rdev_cancel_remain_on_channel(rdev, wdev, cookie); 8008 } 8009 8010 static u32 rateset_to_mask(struct ieee80211_supported_band *sband, 8011 u8 *rates, u8 rates_len) 8012 { 8013 u8 i; 8014 u32 mask = 0; 8015 8016 for (i = 0; i < rates_len; i++) { 8017 int rate = (rates[i] & 0x7f) * 5; 8018 int ridx; 8019 for (ridx = 0; ridx < sband->n_bitrates; ridx++) { 8020 struct ieee80211_rate *srate = 8021 &sband->bitrates[ridx]; 8022 if (rate == srate->bitrate) { 8023 mask |= 1 << ridx; 8024 break; 8025 } 8026 } 8027 if (ridx == sband->n_bitrates) 8028 return 0; /* rate not found */ 8029 } 8030 8031 return mask; 8032 } 8033 8034 static bool ht_rateset_to_mask(struct ieee80211_supported_band *sband, 8035 u8 *rates, u8 rates_len, 8036 u8 mcs[IEEE80211_HT_MCS_MASK_LEN]) 8037 { 8038 u8 i; 8039 8040 memset(mcs, 0, IEEE80211_HT_MCS_MASK_LEN); 8041 8042 for (i = 0; i < rates_len; i++) { 8043 int ridx, rbit; 8044 8045 ridx = rates[i] / 8; 8046 rbit = BIT(rates[i] % 8); 8047 8048 /* check validity */ 8049 if ((ridx < 0) || (ridx >= IEEE80211_HT_MCS_MASK_LEN)) 8050 return false; 8051 8052 /* check availability */ 8053 if (sband->ht_cap.mcs.rx_mask[ridx] & rbit) 8054 mcs[ridx] |= rbit; 8055 else 8056 return false; 8057 } 8058 8059 return true; 8060 } 8061 8062 static u16 vht_mcs_map_to_mcs_mask(u8 vht_mcs_map) 8063 { 8064 u16 mcs_mask = 0; 8065 8066 switch (vht_mcs_map) { 8067 case IEEE80211_VHT_MCS_NOT_SUPPORTED: 8068 break; 8069 case IEEE80211_VHT_MCS_SUPPORT_0_7: 8070 mcs_mask = 0x00FF; 8071 break; 8072 case IEEE80211_VHT_MCS_SUPPORT_0_8: 8073 mcs_mask = 0x01FF; 8074 break; 8075 case IEEE80211_VHT_MCS_SUPPORT_0_9: 8076 mcs_mask = 0x03FF; 8077 break; 8078 default: 8079 break; 8080 } 8081 8082 return mcs_mask; 8083 } 8084 8085 static void vht_build_mcs_mask(u16 vht_mcs_map, 8086 u16 vht_mcs_mask[NL80211_VHT_NSS_MAX]) 8087 { 8088 u8 nss; 8089 8090 for (nss = 0; nss < NL80211_VHT_NSS_MAX; nss++) { 8091 vht_mcs_mask[nss] = vht_mcs_map_to_mcs_mask(vht_mcs_map & 0x03); 8092 vht_mcs_map >>= 2; 8093 } 8094 } 8095 8096 static bool vht_set_mcs_mask(struct ieee80211_supported_band *sband, 8097 struct nl80211_txrate_vht *txrate, 8098 u16 mcs[NL80211_VHT_NSS_MAX]) 8099 { 8100 u16 tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map); 8101 u16 tx_mcs_mask[NL80211_VHT_NSS_MAX] = {}; 8102 u8 i; 8103 8104 if (!sband->vht_cap.vht_supported) 8105 return false; 8106 8107 memset(mcs, 0, sizeof(u16) * NL80211_VHT_NSS_MAX); 8108 8109 /* Build vht_mcs_mask from VHT capabilities */ 8110 vht_build_mcs_mask(tx_mcs_map, tx_mcs_mask); 8111 8112 for (i = 0; i < NL80211_VHT_NSS_MAX; i++) { 8113 if ((tx_mcs_mask[i] & txrate->mcs[i]) == txrate->mcs[i]) 8114 mcs[i] = txrate->mcs[i]; 8115 else 8116 return false; 8117 } 8118 8119 return true; 8120 } 8121 8122 static const struct nla_policy nl80211_txattr_policy[NL80211_TXRATE_MAX + 1] = { 8123 [NL80211_TXRATE_LEGACY] = { .type = NLA_BINARY, 8124 .len = NL80211_MAX_SUPP_RATES }, 8125 [NL80211_TXRATE_HT] = { .type = NLA_BINARY, 8126 .len = NL80211_MAX_SUPP_HT_RATES }, 8127 [NL80211_TXRATE_VHT] = { .len = sizeof(struct nl80211_txrate_vht)}, 8128 [NL80211_TXRATE_GI] = { .type = NLA_U8 }, 8129 }; 8130 8131 static int nl80211_set_tx_bitrate_mask(struct sk_buff *skb, 8132 struct genl_info *info) 8133 { 8134 struct nlattr *tb[NL80211_TXRATE_MAX + 1]; 8135 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 8136 struct cfg80211_bitrate_mask mask; 8137 int rem, i; 8138 struct net_device *dev = info->user_ptr[1]; 8139 struct nlattr *tx_rates; 8140 struct ieee80211_supported_band *sband; 8141 u16 vht_tx_mcs_map; 8142 8143 if (!rdev->ops->set_bitrate_mask) 8144 return -EOPNOTSUPP; 8145 8146 memset(&mask, 0, sizeof(mask)); 8147 /* Default to all rates enabled */ 8148 for (i = 0; i < IEEE80211_NUM_BANDS; i++) { 8149 sband = rdev->wiphy.bands[i]; 8150 8151 if (!sband) 8152 continue; 8153 8154 mask.control[i].legacy = (1 << sband->n_bitrates) - 1; 8155 memcpy(mask.control[i].ht_mcs, 8156 sband->ht_cap.mcs.rx_mask, 8157 sizeof(mask.control[i].ht_mcs)); 8158 8159 if (!sband->vht_cap.vht_supported) 8160 continue; 8161 8162 vht_tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map); 8163 vht_build_mcs_mask(vht_tx_mcs_map, mask.control[i].vht_mcs); 8164 } 8165 8166 /* if no rates are given set it back to the defaults */ 8167 if (!info->attrs[NL80211_ATTR_TX_RATES]) 8168 goto out; 8169 8170 /* 8171 * The nested attribute uses enum nl80211_band as the index. This maps 8172 * directly to the enum ieee80211_band values used in cfg80211. 8173 */ 8174 BUILD_BUG_ON(NL80211_MAX_SUPP_HT_RATES > IEEE80211_HT_MCS_MASK_LEN * 8); 8175 nla_for_each_nested(tx_rates, info->attrs[NL80211_ATTR_TX_RATES], rem) { 8176 enum ieee80211_band band = nla_type(tx_rates); 8177 int err; 8178 8179 if (band < 0 || band >= IEEE80211_NUM_BANDS) 8180 return -EINVAL; 8181 sband = rdev->wiphy.bands[band]; 8182 if (sband == NULL) 8183 return -EINVAL; 8184 err = nla_parse(tb, NL80211_TXRATE_MAX, nla_data(tx_rates), 8185 nla_len(tx_rates), nl80211_txattr_policy); 8186 if (err) 8187 return err; 8188 if (tb[NL80211_TXRATE_LEGACY]) { 8189 mask.control[band].legacy = rateset_to_mask( 8190 sband, 8191 nla_data(tb[NL80211_TXRATE_LEGACY]), 8192 nla_len(tb[NL80211_TXRATE_LEGACY])); 8193 if ((mask.control[band].legacy == 0) && 8194 nla_len(tb[NL80211_TXRATE_LEGACY])) 8195 return -EINVAL; 8196 } 8197 if (tb[NL80211_TXRATE_HT]) { 8198 if (!ht_rateset_to_mask( 8199 sband, 8200 nla_data(tb[NL80211_TXRATE_HT]), 8201 nla_len(tb[NL80211_TXRATE_HT]), 8202 mask.control[band].ht_mcs)) 8203 return -EINVAL; 8204 } 8205 if (tb[NL80211_TXRATE_VHT]) { 8206 if (!vht_set_mcs_mask( 8207 sband, 8208 nla_data(tb[NL80211_TXRATE_VHT]), 8209 mask.control[band].vht_mcs)) 8210 return -EINVAL; 8211 } 8212 if (tb[NL80211_TXRATE_GI]) { 8213 mask.control[band].gi = 8214 nla_get_u8(tb[NL80211_TXRATE_GI]); 8215 if (mask.control[band].gi > NL80211_TXRATE_FORCE_LGI) 8216 return -EINVAL; 8217 } 8218 8219 if (mask.control[band].legacy == 0) { 8220 /* don't allow empty legacy rates if HT or VHT 8221 * are not even supported. 8222 */ 8223 if (!(rdev->wiphy.bands[band]->ht_cap.ht_supported || 8224 rdev->wiphy.bands[band]->vht_cap.vht_supported)) 8225 return -EINVAL; 8226 8227 for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++) 8228 if (mask.control[band].ht_mcs[i]) 8229 goto out; 8230 8231 for (i = 0; i < NL80211_VHT_NSS_MAX; i++) 8232 if (mask.control[band].vht_mcs[i]) 8233 goto out; 8234 8235 /* legacy and mcs rates may not be both empty */ 8236 return -EINVAL; 8237 } 8238 } 8239 8240 out: 8241 return rdev_set_bitrate_mask(rdev, dev, NULL, &mask); 8242 } 8243 8244 static int nl80211_register_mgmt(struct sk_buff *skb, struct genl_info *info) 8245 { 8246 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 8247 struct wireless_dev *wdev = info->user_ptr[1]; 8248 u16 frame_type = IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION; 8249 8250 if (!info->attrs[NL80211_ATTR_FRAME_MATCH]) 8251 return -EINVAL; 8252 8253 if (info->attrs[NL80211_ATTR_FRAME_TYPE]) 8254 frame_type = nla_get_u16(info->attrs[NL80211_ATTR_FRAME_TYPE]); 8255 8256 switch (wdev->iftype) { 8257 case NL80211_IFTYPE_STATION: 8258 case NL80211_IFTYPE_ADHOC: 8259 case NL80211_IFTYPE_P2P_CLIENT: 8260 case NL80211_IFTYPE_AP: 8261 case NL80211_IFTYPE_AP_VLAN: 8262 case NL80211_IFTYPE_MESH_POINT: 8263 case NL80211_IFTYPE_P2P_GO: 8264 case NL80211_IFTYPE_P2P_DEVICE: 8265 break; 8266 default: 8267 return -EOPNOTSUPP; 8268 } 8269 8270 /* not much point in registering if we can't reply */ 8271 if (!rdev->ops->mgmt_tx) 8272 return -EOPNOTSUPP; 8273 8274 return cfg80211_mlme_register_mgmt(wdev, info->snd_portid, frame_type, 8275 nla_data(info->attrs[NL80211_ATTR_FRAME_MATCH]), 8276 nla_len(info->attrs[NL80211_ATTR_FRAME_MATCH])); 8277 } 8278 8279 static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info) 8280 { 8281 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 8282 struct wireless_dev *wdev = info->user_ptr[1]; 8283 struct cfg80211_chan_def chandef; 8284 int err; 8285 void *hdr = NULL; 8286 u64 cookie; 8287 struct sk_buff *msg = NULL; 8288 struct cfg80211_mgmt_tx_params params = { 8289 .dont_wait_for_ack = 8290 info->attrs[NL80211_ATTR_DONT_WAIT_FOR_ACK], 8291 }; 8292 8293 if (!info->attrs[NL80211_ATTR_FRAME]) 8294 return -EINVAL; 8295 8296 if (!rdev->ops->mgmt_tx) 8297 return -EOPNOTSUPP; 8298 8299 switch (wdev->iftype) { 8300 case NL80211_IFTYPE_P2P_DEVICE: 8301 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ]) 8302 return -EINVAL; 8303 case NL80211_IFTYPE_STATION: 8304 case NL80211_IFTYPE_ADHOC: 8305 case NL80211_IFTYPE_P2P_CLIENT: 8306 case NL80211_IFTYPE_AP: 8307 case NL80211_IFTYPE_AP_VLAN: 8308 case NL80211_IFTYPE_MESH_POINT: 8309 case NL80211_IFTYPE_P2P_GO: 8310 break; 8311 default: 8312 return -EOPNOTSUPP; 8313 } 8314 8315 if (info->attrs[NL80211_ATTR_DURATION]) { 8316 if (!(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX)) 8317 return -EINVAL; 8318 params.wait = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]); 8319 8320 /* 8321 * We should wait on the channel for at least a minimum amount 8322 * of time (10ms) but no longer than the driver supports. 8323 */ 8324 if (params.wait < NL80211_MIN_REMAIN_ON_CHANNEL_TIME || 8325 params.wait > rdev->wiphy.max_remain_on_channel_duration) 8326 return -EINVAL; 8327 8328 } 8329 8330 params.offchan = info->attrs[NL80211_ATTR_OFFCHANNEL_TX_OK]; 8331 8332 if (params.offchan && !(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX)) 8333 return -EINVAL; 8334 8335 params.no_cck = nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]); 8336 8337 /* get the channel if any has been specified, otherwise pass NULL to 8338 * the driver. The latter will use the current one 8339 */ 8340 chandef.chan = NULL; 8341 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) { 8342 err = nl80211_parse_chandef(rdev, info, &chandef); 8343 if (err) 8344 return err; 8345 } 8346 8347 if (!chandef.chan && params.offchan) 8348 return -EINVAL; 8349 8350 params.buf = nla_data(info->attrs[NL80211_ATTR_FRAME]); 8351 params.len = nla_len(info->attrs[NL80211_ATTR_FRAME]); 8352 8353 if (info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]) { 8354 int len = nla_len(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]); 8355 int i; 8356 8357 if (len % sizeof(u16)) 8358 return -EINVAL; 8359 8360 params.n_csa_offsets = len / sizeof(u16); 8361 params.csa_offsets = 8362 nla_data(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]); 8363 8364 /* check that all the offsets fit the frame */ 8365 for (i = 0; i < params.n_csa_offsets; i++) { 8366 if (params.csa_offsets[i] >= params.len) 8367 return -EINVAL; 8368 } 8369 } 8370 8371 if (!params.dont_wait_for_ack) { 8372 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 8373 if (!msg) 8374 return -ENOMEM; 8375 8376 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0, 8377 NL80211_CMD_FRAME); 8378 if (!hdr) { 8379 err = -ENOBUFS; 8380 goto free_msg; 8381 } 8382 } 8383 8384 params.chan = chandef.chan; 8385 err = cfg80211_mlme_mgmt_tx(rdev, wdev, ¶ms, &cookie); 8386 if (err) 8387 goto free_msg; 8388 8389 if (msg) { 8390 if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie)) 8391 goto nla_put_failure; 8392 8393 genlmsg_end(msg, hdr); 8394 return genlmsg_reply(msg, info); 8395 } 8396 8397 return 0; 8398 8399 nla_put_failure: 8400 err = -ENOBUFS; 8401 free_msg: 8402 nlmsg_free(msg); 8403 return err; 8404 } 8405 8406 static int nl80211_tx_mgmt_cancel_wait(struct sk_buff *skb, struct genl_info *info) 8407 { 8408 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 8409 struct wireless_dev *wdev = info->user_ptr[1]; 8410 u64 cookie; 8411 8412 if (!info->attrs[NL80211_ATTR_COOKIE]) 8413 return -EINVAL; 8414 8415 if (!rdev->ops->mgmt_tx_cancel_wait) 8416 return -EOPNOTSUPP; 8417 8418 switch (wdev->iftype) { 8419 case NL80211_IFTYPE_STATION: 8420 case NL80211_IFTYPE_ADHOC: 8421 case NL80211_IFTYPE_P2P_CLIENT: 8422 case NL80211_IFTYPE_AP: 8423 case NL80211_IFTYPE_AP_VLAN: 8424 case NL80211_IFTYPE_P2P_GO: 8425 case NL80211_IFTYPE_P2P_DEVICE: 8426 break; 8427 default: 8428 return -EOPNOTSUPP; 8429 } 8430 8431 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]); 8432 8433 return rdev_mgmt_tx_cancel_wait(rdev, wdev, cookie); 8434 } 8435 8436 static int nl80211_set_power_save(struct sk_buff *skb, struct genl_info *info) 8437 { 8438 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 8439 struct wireless_dev *wdev; 8440 struct net_device *dev = info->user_ptr[1]; 8441 u8 ps_state; 8442 bool state; 8443 int err; 8444 8445 if (!info->attrs[NL80211_ATTR_PS_STATE]) 8446 return -EINVAL; 8447 8448 ps_state = nla_get_u32(info->attrs[NL80211_ATTR_PS_STATE]); 8449 8450 if (ps_state != NL80211_PS_DISABLED && ps_state != NL80211_PS_ENABLED) 8451 return -EINVAL; 8452 8453 wdev = dev->ieee80211_ptr; 8454 8455 if (!rdev->ops->set_power_mgmt) 8456 return -EOPNOTSUPP; 8457 8458 state = (ps_state == NL80211_PS_ENABLED) ? true : false; 8459 8460 if (state == wdev->ps) 8461 return 0; 8462 8463 err = rdev_set_power_mgmt(rdev, dev, state, wdev->ps_timeout); 8464 if (!err) 8465 wdev->ps = state; 8466 return err; 8467 } 8468 8469 static int nl80211_get_power_save(struct sk_buff *skb, struct genl_info *info) 8470 { 8471 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 8472 enum nl80211_ps_state ps_state; 8473 struct wireless_dev *wdev; 8474 struct net_device *dev = info->user_ptr[1]; 8475 struct sk_buff *msg; 8476 void *hdr; 8477 int err; 8478 8479 wdev = dev->ieee80211_ptr; 8480 8481 if (!rdev->ops->set_power_mgmt) 8482 return -EOPNOTSUPP; 8483 8484 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 8485 if (!msg) 8486 return -ENOMEM; 8487 8488 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0, 8489 NL80211_CMD_GET_POWER_SAVE); 8490 if (!hdr) { 8491 err = -ENOBUFS; 8492 goto free_msg; 8493 } 8494 8495 if (wdev->ps) 8496 ps_state = NL80211_PS_ENABLED; 8497 else 8498 ps_state = NL80211_PS_DISABLED; 8499 8500 if (nla_put_u32(msg, NL80211_ATTR_PS_STATE, ps_state)) 8501 goto nla_put_failure; 8502 8503 genlmsg_end(msg, hdr); 8504 return genlmsg_reply(msg, info); 8505 8506 nla_put_failure: 8507 err = -ENOBUFS; 8508 free_msg: 8509 nlmsg_free(msg); 8510 return err; 8511 } 8512 8513 static const struct nla_policy 8514 nl80211_attr_cqm_policy[NL80211_ATTR_CQM_MAX + 1] = { 8515 [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_U32 }, 8516 [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U32 }, 8517 [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 }, 8518 [NL80211_ATTR_CQM_TXE_RATE] = { .type = NLA_U32 }, 8519 [NL80211_ATTR_CQM_TXE_PKTS] = { .type = NLA_U32 }, 8520 [NL80211_ATTR_CQM_TXE_INTVL] = { .type = NLA_U32 }, 8521 }; 8522 8523 static int nl80211_set_cqm_txe(struct genl_info *info, 8524 u32 rate, u32 pkts, u32 intvl) 8525 { 8526 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 8527 struct net_device *dev = info->user_ptr[1]; 8528 struct wireless_dev *wdev = dev->ieee80211_ptr; 8529 8530 if (rate > 100 || intvl > NL80211_CQM_TXE_MAX_INTVL) 8531 return -EINVAL; 8532 8533 if (!rdev->ops->set_cqm_txe_config) 8534 return -EOPNOTSUPP; 8535 8536 if (wdev->iftype != NL80211_IFTYPE_STATION && 8537 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT) 8538 return -EOPNOTSUPP; 8539 8540 return rdev_set_cqm_txe_config(rdev, dev, rate, pkts, intvl); 8541 } 8542 8543 static int nl80211_set_cqm_rssi(struct genl_info *info, 8544 s32 threshold, u32 hysteresis) 8545 { 8546 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 8547 struct net_device *dev = info->user_ptr[1]; 8548 struct wireless_dev *wdev = dev->ieee80211_ptr; 8549 8550 if (threshold > 0) 8551 return -EINVAL; 8552 8553 /* disabling - hysteresis should also be zero then */ 8554 if (threshold == 0) 8555 hysteresis = 0; 8556 8557 if (!rdev->ops->set_cqm_rssi_config) 8558 return -EOPNOTSUPP; 8559 8560 if (wdev->iftype != NL80211_IFTYPE_STATION && 8561 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT) 8562 return -EOPNOTSUPP; 8563 8564 return rdev_set_cqm_rssi_config(rdev, dev, threshold, hysteresis); 8565 } 8566 8567 static int nl80211_set_cqm(struct sk_buff *skb, struct genl_info *info) 8568 { 8569 struct nlattr *attrs[NL80211_ATTR_CQM_MAX + 1]; 8570 struct nlattr *cqm; 8571 int err; 8572 8573 cqm = info->attrs[NL80211_ATTR_CQM]; 8574 if (!cqm) 8575 return -EINVAL; 8576 8577 err = nla_parse_nested(attrs, NL80211_ATTR_CQM_MAX, cqm, 8578 nl80211_attr_cqm_policy); 8579 if (err) 8580 return err; 8581 8582 if (attrs[NL80211_ATTR_CQM_RSSI_THOLD] && 8583 attrs[NL80211_ATTR_CQM_RSSI_HYST]) { 8584 s32 threshold = nla_get_s32(attrs[NL80211_ATTR_CQM_RSSI_THOLD]); 8585 u32 hysteresis = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_HYST]); 8586 8587 return nl80211_set_cqm_rssi(info, threshold, hysteresis); 8588 } 8589 8590 if (attrs[NL80211_ATTR_CQM_TXE_RATE] && 8591 attrs[NL80211_ATTR_CQM_TXE_PKTS] && 8592 attrs[NL80211_ATTR_CQM_TXE_INTVL]) { 8593 u32 rate = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_RATE]); 8594 u32 pkts = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_PKTS]); 8595 u32 intvl = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_INTVL]); 8596 8597 return nl80211_set_cqm_txe(info, rate, pkts, intvl); 8598 } 8599 8600 return -EINVAL; 8601 } 8602 8603 static int nl80211_join_ocb(struct sk_buff *skb, struct genl_info *info) 8604 { 8605 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 8606 struct net_device *dev = info->user_ptr[1]; 8607 struct ocb_setup setup = {}; 8608 int err; 8609 8610 err = nl80211_parse_chandef(rdev, info, &setup.chandef); 8611 if (err) 8612 return err; 8613 8614 return cfg80211_join_ocb(rdev, dev, &setup); 8615 } 8616 8617 static int nl80211_leave_ocb(struct sk_buff *skb, struct genl_info *info) 8618 { 8619 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 8620 struct net_device *dev = info->user_ptr[1]; 8621 8622 return cfg80211_leave_ocb(rdev, dev); 8623 } 8624 8625 static int nl80211_join_mesh(struct sk_buff *skb, struct genl_info *info) 8626 { 8627 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 8628 struct net_device *dev = info->user_ptr[1]; 8629 struct mesh_config cfg; 8630 struct mesh_setup setup; 8631 int err; 8632 8633 /* start with default */ 8634 memcpy(&cfg, &default_mesh_config, sizeof(cfg)); 8635 memcpy(&setup, &default_mesh_setup, sizeof(setup)); 8636 8637 if (info->attrs[NL80211_ATTR_MESH_CONFIG]) { 8638 /* and parse parameters if given */ 8639 err = nl80211_parse_mesh_config(info, &cfg, NULL); 8640 if (err) 8641 return err; 8642 } 8643 8644 if (!info->attrs[NL80211_ATTR_MESH_ID] || 8645 !nla_len(info->attrs[NL80211_ATTR_MESH_ID])) 8646 return -EINVAL; 8647 8648 setup.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]); 8649 setup.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]); 8650 8651 if (info->attrs[NL80211_ATTR_MCAST_RATE] && 8652 !nl80211_parse_mcast_rate(rdev, setup.mcast_rate, 8653 nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE]))) 8654 return -EINVAL; 8655 8656 if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) { 8657 setup.beacon_interval = 8658 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]); 8659 if (setup.beacon_interval < 10 || 8660 setup.beacon_interval > 10000) 8661 return -EINVAL; 8662 } 8663 8664 if (info->attrs[NL80211_ATTR_DTIM_PERIOD]) { 8665 setup.dtim_period = 8666 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]); 8667 if (setup.dtim_period < 1 || setup.dtim_period > 100) 8668 return -EINVAL; 8669 } 8670 8671 if (info->attrs[NL80211_ATTR_MESH_SETUP]) { 8672 /* parse additional setup parameters if given */ 8673 err = nl80211_parse_mesh_setup(info, &setup); 8674 if (err) 8675 return err; 8676 } 8677 8678 if (setup.user_mpm) 8679 cfg.auto_open_plinks = false; 8680 8681 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) { 8682 err = nl80211_parse_chandef(rdev, info, &setup.chandef); 8683 if (err) 8684 return err; 8685 } else { 8686 /* cfg80211_join_mesh() will sort it out */ 8687 setup.chandef.chan = NULL; 8688 } 8689 8690 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) { 8691 u8 *rates = nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]); 8692 int n_rates = 8693 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]); 8694 struct ieee80211_supported_band *sband; 8695 8696 if (!setup.chandef.chan) 8697 return -EINVAL; 8698 8699 sband = rdev->wiphy.bands[setup.chandef.chan->band]; 8700 8701 err = ieee80211_get_ratemask(sband, rates, n_rates, 8702 &setup.basic_rates); 8703 if (err) 8704 return err; 8705 } 8706 8707 return cfg80211_join_mesh(rdev, dev, &setup, &cfg); 8708 } 8709 8710 static int nl80211_leave_mesh(struct sk_buff *skb, struct genl_info *info) 8711 { 8712 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 8713 struct net_device *dev = info->user_ptr[1]; 8714 8715 return cfg80211_leave_mesh(rdev, dev); 8716 } 8717 8718 #ifdef CONFIG_PM 8719 static int nl80211_send_wowlan_patterns(struct sk_buff *msg, 8720 struct cfg80211_registered_device *rdev) 8721 { 8722 struct cfg80211_wowlan *wowlan = rdev->wiphy.wowlan_config; 8723 struct nlattr *nl_pats, *nl_pat; 8724 int i, pat_len; 8725 8726 if (!wowlan->n_patterns) 8727 return 0; 8728 8729 nl_pats = nla_nest_start(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN); 8730 if (!nl_pats) 8731 return -ENOBUFS; 8732 8733 for (i = 0; i < wowlan->n_patterns; i++) { 8734 nl_pat = nla_nest_start(msg, i + 1); 8735 if (!nl_pat) 8736 return -ENOBUFS; 8737 pat_len = wowlan->patterns[i].pattern_len; 8738 if (nla_put(msg, NL80211_PKTPAT_MASK, DIV_ROUND_UP(pat_len, 8), 8739 wowlan->patterns[i].mask) || 8740 nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len, 8741 wowlan->patterns[i].pattern) || 8742 nla_put_u32(msg, NL80211_PKTPAT_OFFSET, 8743 wowlan->patterns[i].pkt_offset)) 8744 return -ENOBUFS; 8745 nla_nest_end(msg, nl_pat); 8746 } 8747 nla_nest_end(msg, nl_pats); 8748 8749 return 0; 8750 } 8751 8752 static int nl80211_send_wowlan_tcp(struct sk_buff *msg, 8753 struct cfg80211_wowlan_tcp *tcp) 8754 { 8755 struct nlattr *nl_tcp; 8756 8757 if (!tcp) 8758 return 0; 8759 8760 nl_tcp = nla_nest_start(msg, NL80211_WOWLAN_TRIG_TCP_CONNECTION); 8761 if (!nl_tcp) 8762 return -ENOBUFS; 8763 8764 if (nla_put_be32(msg, NL80211_WOWLAN_TCP_SRC_IPV4, tcp->src) || 8765 nla_put_be32(msg, NL80211_WOWLAN_TCP_DST_IPV4, tcp->dst) || 8766 nla_put(msg, NL80211_WOWLAN_TCP_DST_MAC, ETH_ALEN, tcp->dst_mac) || 8767 nla_put_u16(msg, NL80211_WOWLAN_TCP_SRC_PORT, tcp->src_port) || 8768 nla_put_u16(msg, NL80211_WOWLAN_TCP_DST_PORT, tcp->dst_port) || 8769 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD, 8770 tcp->payload_len, tcp->payload) || 8771 nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL, 8772 tcp->data_interval) || 8773 nla_put(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD, 8774 tcp->wake_len, tcp->wake_data) || 8775 nla_put(msg, NL80211_WOWLAN_TCP_WAKE_MASK, 8776 DIV_ROUND_UP(tcp->wake_len, 8), tcp->wake_mask)) 8777 return -ENOBUFS; 8778 8779 if (tcp->payload_seq.len && 8780 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ, 8781 sizeof(tcp->payload_seq), &tcp->payload_seq)) 8782 return -ENOBUFS; 8783 8784 if (tcp->payload_tok.len && 8785 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN, 8786 sizeof(tcp->payload_tok) + tcp->tokens_size, 8787 &tcp->payload_tok)) 8788 return -ENOBUFS; 8789 8790 nla_nest_end(msg, nl_tcp); 8791 8792 return 0; 8793 } 8794 8795 static int nl80211_send_wowlan_nd(struct sk_buff *msg, 8796 struct cfg80211_sched_scan_request *req) 8797 { 8798 struct nlattr *nd, *freqs, *matches, *match; 8799 int i; 8800 8801 if (!req) 8802 return 0; 8803 8804 nd = nla_nest_start(msg, NL80211_WOWLAN_TRIG_NET_DETECT); 8805 if (!nd) 8806 return -ENOBUFS; 8807 8808 if (nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_INTERVAL, req->interval)) 8809 return -ENOBUFS; 8810 8811 freqs = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES); 8812 if (!freqs) 8813 return -ENOBUFS; 8814 8815 for (i = 0; i < req->n_channels; i++) 8816 nla_put_u32(msg, i, req->channels[i]->center_freq); 8817 8818 nla_nest_end(msg, freqs); 8819 8820 if (req->n_match_sets) { 8821 matches = nla_nest_start(msg, NL80211_ATTR_SCHED_SCAN_MATCH); 8822 for (i = 0; i < req->n_match_sets; i++) { 8823 match = nla_nest_start(msg, i); 8824 nla_put(msg, NL80211_SCHED_SCAN_MATCH_ATTR_SSID, 8825 req->match_sets[i].ssid.ssid_len, 8826 req->match_sets[i].ssid.ssid); 8827 nla_nest_end(msg, match); 8828 } 8829 nla_nest_end(msg, matches); 8830 } 8831 8832 nla_nest_end(msg, nd); 8833 8834 return 0; 8835 } 8836 8837 static int nl80211_get_wowlan(struct sk_buff *skb, struct genl_info *info) 8838 { 8839 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 8840 struct sk_buff *msg; 8841 void *hdr; 8842 u32 size = NLMSG_DEFAULT_SIZE; 8843 8844 if (!rdev->wiphy.wowlan) 8845 return -EOPNOTSUPP; 8846 8847 if (rdev->wiphy.wowlan_config && rdev->wiphy.wowlan_config->tcp) { 8848 /* adjust size to have room for all the data */ 8849 size += rdev->wiphy.wowlan_config->tcp->tokens_size + 8850 rdev->wiphy.wowlan_config->tcp->payload_len + 8851 rdev->wiphy.wowlan_config->tcp->wake_len + 8852 rdev->wiphy.wowlan_config->tcp->wake_len / 8; 8853 } 8854 8855 msg = nlmsg_new(size, GFP_KERNEL); 8856 if (!msg) 8857 return -ENOMEM; 8858 8859 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0, 8860 NL80211_CMD_GET_WOWLAN); 8861 if (!hdr) 8862 goto nla_put_failure; 8863 8864 if (rdev->wiphy.wowlan_config) { 8865 struct nlattr *nl_wowlan; 8866 8867 nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS); 8868 if (!nl_wowlan) 8869 goto nla_put_failure; 8870 8871 if ((rdev->wiphy.wowlan_config->any && 8872 nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) || 8873 (rdev->wiphy.wowlan_config->disconnect && 8874 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) || 8875 (rdev->wiphy.wowlan_config->magic_pkt && 8876 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) || 8877 (rdev->wiphy.wowlan_config->gtk_rekey_failure && 8878 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) || 8879 (rdev->wiphy.wowlan_config->eap_identity_req && 8880 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) || 8881 (rdev->wiphy.wowlan_config->four_way_handshake && 8882 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) || 8883 (rdev->wiphy.wowlan_config->rfkill_release && 8884 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE))) 8885 goto nla_put_failure; 8886 8887 if (nl80211_send_wowlan_patterns(msg, rdev)) 8888 goto nla_put_failure; 8889 8890 if (nl80211_send_wowlan_tcp(msg, 8891 rdev->wiphy.wowlan_config->tcp)) 8892 goto nla_put_failure; 8893 8894 if (nl80211_send_wowlan_nd( 8895 msg, 8896 rdev->wiphy.wowlan_config->nd_config)) 8897 goto nla_put_failure; 8898 8899 nla_nest_end(msg, nl_wowlan); 8900 } 8901 8902 genlmsg_end(msg, hdr); 8903 return genlmsg_reply(msg, info); 8904 8905 nla_put_failure: 8906 nlmsg_free(msg); 8907 return -ENOBUFS; 8908 } 8909 8910 static int nl80211_parse_wowlan_tcp(struct cfg80211_registered_device *rdev, 8911 struct nlattr *attr, 8912 struct cfg80211_wowlan *trig) 8913 { 8914 struct nlattr *tb[NUM_NL80211_WOWLAN_TCP]; 8915 struct cfg80211_wowlan_tcp *cfg; 8916 struct nl80211_wowlan_tcp_data_token *tok = NULL; 8917 struct nl80211_wowlan_tcp_data_seq *seq = NULL; 8918 u32 size; 8919 u32 data_size, wake_size, tokens_size = 0, wake_mask_size; 8920 int err, port; 8921 8922 if (!rdev->wiphy.wowlan->tcp) 8923 return -EINVAL; 8924 8925 err = nla_parse(tb, MAX_NL80211_WOWLAN_TCP, 8926 nla_data(attr), nla_len(attr), 8927 nl80211_wowlan_tcp_policy); 8928 if (err) 8929 return err; 8930 8931 if (!tb[NL80211_WOWLAN_TCP_SRC_IPV4] || 8932 !tb[NL80211_WOWLAN_TCP_DST_IPV4] || 8933 !tb[NL80211_WOWLAN_TCP_DST_MAC] || 8934 !tb[NL80211_WOWLAN_TCP_DST_PORT] || 8935 !tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD] || 8936 !tb[NL80211_WOWLAN_TCP_DATA_INTERVAL] || 8937 !tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD] || 8938 !tb[NL80211_WOWLAN_TCP_WAKE_MASK]) 8939 return -EINVAL; 8940 8941 data_size = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]); 8942 if (data_size > rdev->wiphy.wowlan->tcp->data_payload_max) 8943 return -EINVAL; 8944 8945 if (nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) > 8946 rdev->wiphy.wowlan->tcp->data_interval_max || 8947 nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) == 0) 8948 return -EINVAL; 8949 8950 wake_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]); 8951 if (wake_size > rdev->wiphy.wowlan->tcp->wake_payload_max) 8952 return -EINVAL; 8953 8954 wake_mask_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_MASK]); 8955 if (wake_mask_size != DIV_ROUND_UP(wake_size, 8)) 8956 return -EINVAL; 8957 8958 if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]) { 8959 u32 tokln = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]); 8960 8961 tok = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]); 8962 tokens_size = tokln - sizeof(*tok); 8963 8964 if (!tok->len || tokens_size % tok->len) 8965 return -EINVAL; 8966 if (!rdev->wiphy.wowlan->tcp->tok) 8967 return -EINVAL; 8968 if (tok->len > rdev->wiphy.wowlan->tcp->tok->max_len) 8969 return -EINVAL; 8970 if (tok->len < rdev->wiphy.wowlan->tcp->tok->min_len) 8971 return -EINVAL; 8972 if (tokens_size > rdev->wiphy.wowlan->tcp->tok->bufsize) 8973 return -EINVAL; 8974 if (tok->offset + tok->len > data_size) 8975 return -EINVAL; 8976 } 8977 8978 if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]) { 8979 seq = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]); 8980 if (!rdev->wiphy.wowlan->tcp->seq) 8981 return -EINVAL; 8982 if (seq->len == 0 || seq->len > 4) 8983 return -EINVAL; 8984 if (seq->len + seq->offset > data_size) 8985 return -EINVAL; 8986 } 8987 8988 size = sizeof(*cfg); 8989 size += data_size; 8990 size += wake_size + wake_mask_size; 8991 size += tokens_size; 8992 8993 cfg = kzalloc(size, GFP_KERNEL); 8994 if (!cfg) 8995 return -ENOMEM; 8996 cfg->src = nla_get_be32(tb[NL80211_WOWLAN_TCP_SRC_IPV4]); 8997 cfg->dst = nla_get_be32(tb[NL80211_WOWLAN_TCP_DST_IPV4]); 8998 memcpy(cfg->dst_mac, nla_data(tb[NL80211_WOWLAN_TCP_DST_MAC]), 8999 ETH_ALEN); 9000 if (tb[NL80211_WOWLAN_TCP_SRC_PORT]) 9001 port = nla_get_u16(tb[NL80211_WOWLAN_TCP_SRC_PORT]); 9002 else 9003 port = 0; 9004 #ifdef CONFIG_INET 9005 /* allocate a socket and port for it and use it */ 9006 err = __sock_create(wiphy_net(&rdev->wiphy), PF_INET, SOCK_STREAM, 9007 IPPROTO_TCP, &cfg->sock, 1); 9008 if (err) { 9009 kfree(cfg); 9010 return err; 9011 } 9012 if (inet_csk_get_port(cfg->sock->sk, port)) { 9013 sock_release(cfg->sock); 9014 kfree(cfg); 9015 return -EADDRINUSE; 9016 } 9017 cfg->src_port = inet_sk(cfg->sock->sk)->inet_num; 9018 #else 9019 if (!port) { 9020 kfree(cfg); 9021 return -EINVAL; 9022 } 9023 cfg->src_port = port; 9024 #endif 9025 9026 cfg->dst_port = nla_get_u16(tb[NL80211_WOWLAN_TCP_DST_PORT]); 9027 cfg->payload_len = data_size; 9028 cfg->payload = (u8 *)cfg + sizeof(*cfg) + tokens_size; 9029 memcpy((void *)cfg->payload, 9030 nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]), 9031 data_size); 9032 if (seq) 9033 cfg->payload_seq = *seq; 9034 cfg->data_interval = nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]); 9035 cfg->wake_len = wake_size; 9036 cfg->wake_data = (u8 *)cfg + sizeof(*cfg) + tokens_size + data_size; 9037 memcpy((void *)cfg->wake_data, 9038 nla_data(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]), 9039 wake_size); 9040 cfg->wake_mask = (u8 *)cfg + sizeof(*cfg) + tokens_size + 9041 data_size + wake_size; 9042 memcpy((void *)cfg->wake_mask, 9043 nla_data(tb[NL80211_WOWLAN_TCP_WAKE_MASK]), 9044 wake_mask_size); 9045 if (tok) { 9046 cfg->tokens_size = tokens_size; 9047 memcpy(&cfg->payload_tok, tok, sizeof(*tok) + tokens_size); 9048 } 9049 9050 trig->tcp = cfg; 9051 9052 return 0; 9053 } 9054 9055 static int nl80211_parse_wowlan_nd(struct cfg80211_registered_device *rdev, 9056 const struct wiphy_wowlan_support *wowlan, 9057 struct nlattr *attr, 9058 struct cfg80211_wowlan *trig) 9059 { 9060 struct nlattr **tb; 9061 int err; 9062 9063 tb = kzalloc(NUM_NL80211_ATTR * sizeof(*tb), GFP_KERNEL); 9064 if (!tb) 9065 return -ENOMEM; 9066 9067 if (!(wowlan->flags & WIPHY_WOWLAN_NET_DETECT)) { 9068 err = -EOPNOTSUPP; 9069 goto out; 9070 } 9071 9072 err = nla_parse(tb, NL80211_ATTR_MAX, 9073 nla_data(attr), nla_len(attr), 9074 nl80211_policy); 9075 if (err) 9076 goto out; 9077 9078 trig->nd_config = nl80211_parse_sched_scan(&rdev->wiphy, NULL, tb); 9079 err = PTR_ERR_OR_ZERO(trig->nd_config); 9080 if (err) 9081 trig->nd_config = NULL; 9082 9083 out: 9084 kfree(tb); 9085 return err; 9086 } 9087 9088 static int nl80211_set_wowlan(struct sk_buff *skb, struct genl_info *info) 9089 { 9090 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 9091 struct nlattr *tb[NUM_NL80211_WOWLAN_TRIG]; 9092 struct cfg80211_wowlan new_triggers = {}; 9093 struct cfg80211_wowlan *ntrig; 9094 const struct wiphy_wowlan_support *wowlan = rdev->wiphy.wowlan; 9095 int err, i; 9096 bool prev_enabled = rdev->wiphy.wowlan_config; 9097 9098 if (!wowlan) 9099 return -EOPNOTSUPP; 9100 9101 if (!info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]) { 9102 cfg80211_rdev_free_wowlan(rdev); 9103 rdev->wiphy.wowlan_config = NULL; 9104 goto set_wakeup; 9105 } 9106 9107 err = nla_parse(tb, MAX_NL80211_WOWLAN_TRIG, 9108 nla_data(info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]), 9109 nla_len(info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]), 9110 nl80211_wowlan_policy); 9111 if (err) 9112 return err; 9113 9114 if (tb[NL80211_WOWLAN_TRIG_ANY]) { 9115 if (!(wowlan->flags & WIPHY_WOWLAN_ANY)) 9116 return -EINVAL; 9117 new_triggers.any = true; 9118 } 9119 9120 if (tb[NL80211_WOWLAN_TRIG_DISCONNECT]) { 9121 if (!(wowlan->flags & WIPHY_WOWLAN_DISCONNECT)) 9122 return -EINVAL; 9123 new_triggers.disconnect = true; 9124 } 9125 9126 if (tb[NL80211_WOWLAN_TRIG_MAGIC_PKT]) { 9127 if (!(wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT)) 9128 return -EINVAL; 9129 new_triggers.magic_pkt = true; 9130 } 9131 9132 if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED]) 9133 return -EINVAL; 9134 9135 if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE]) { 9136 if (!(wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE)) 9137 return -EINVAL; 9138 new_triggers.gtk_rekey_failure = true; 9139 } 9140 9141 if (tb[NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST]) { 9142 if (!(wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ)) 9143 return -EINVAL; 9144 new_triggers.eap_identity_req = true; 9145 } 9146 9147 if (tb[NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE]) { 9148 if (!(wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE)) 9149 return -EINVAL; 9150 new_triggers.four_way_handshake = true; 9151 } 9152 9153 if (tb[NL80211_WOWLAN_TRIG_RFKILL_RELEASE]) { 9154 if (!(wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE)) 9155 return -EINVAL; 9156 new_triggers.rfkill_release = true; 9157 } 9158 9159 if (tb[NL80211_WOWLAN_TRIG_PKT_PATTERN]) { 9160 struct nlattr *pat; 9161 int n_patterns = 0; 9162 int rem, pat_len, mask_len, pkt_offset; 9163 struct nlattr *pat_tb[NUM_NL80211_PKTPAT]; 9164 9165 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN], 9166 rem) 9167 n_patterns++; 9168 if (n_patterns > wowlan->n_patterns) 9169 return -EINVAL; 9170 9171 new_triggers.patterns = kcalloc(n_patterns, 9172 sizeof(new_triggers.patterns[0]), 9173 GFP_KERNEL); 9174 if (!new_triggers.patterns) 9175 return -ENOMEM; 9176 9177 new_triggers.n_patterns = n_patterns; 9178 i = 0; 9179 9180 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN], 9181 rem) { 9182 u8 *mask_pat; 9183 9184 nla_parse(pat_tb, MAX_NL80211_PKTPAT, nla_data(pat), 9185 nla_len(pat), NULL); 9186 err = -EINVAL; 9187 if (!pat_tb[NL80211_PKTPAT_MASK] || 9188 !pat_tb[NL80211_PKTPAT_PATTERN]) 9189 goto error; 9190 pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]); 9191 mask_len = DIV_ROUND_UP(pat_len, 8); 9192 if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len) 9193 goto error; 9194 if (pat_len > wowlan->pattern_max_len || 9195 pat_len < wowlan->pattern_min_len) 9196 goto error; 9197 9198 if (!pat_tb[NL80211_PKTPAT_OFFSET]) 9199 pkt_offset = 0; 9200 else 9201 pkt_offset = nla_get_u32( 9202 pat_tb[NL80211_PKTPAT_OFFSET]); 9203 if (pkt_offset > wowlan->max_pkt_offset) 9204 goto error; 9205 new_triggers.patterns[i].pkt_offset = pkt_offset; 9206 9207 mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL); 9208 if (!mask_pat) { 9209 err = -ENOMEM; 9210 goto error; 9211 } 9212 new_triggers.patterns[i].mask = mask_pat; 9213 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]), 9214 mask_len); 9215 mask_pat += mask_len; 9216 new_triggers.patterns[i].pattern = mask_pat; 9217 new_triggers.patterns[i].pattern_len = pat_len; 9218 memcpy(mask_pat, 9219 nla_data(pat_tb[NL80211_PKTPAT_PATTERN]), 9220 pat_len); 9221 i++; 9222 } 9223 } 9224 9225 if (tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION]) { 9226 err = nl80211_parse_wowlan_tcp( 9227 rdev, tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION], 9228 &new_triggers); 9229 if (err) 9230 goto error; 9231 } 9232 9233 if (tb[NL80211_WOWLAN_TRIG_NET_DETECT]) { 9234 err = nl80211_parse_wowlan_nd( 9235 rdev, wowlan, tb[NL80211_WOWLAN_TRIG_NET_DETECT], 9236 &new_triggers); 9237 if (err) 9238 goto error; 9239 } 9240 9241 ntrig = kmemdup(&new_triggers, sizeof(new_triggers), GFP_KERNEL); 9242 if (!ntrig) { 9243 err = -ENOMEM; 9244 goto error; 9245 } 9246 cfg80211_rdev_free_wowlan(rdev); 9247 rdev->wiphy.wowlan_config = ntrig; 9248 9249 set_wakeup: 9250 if (rdev->ops->set_wakeup && 9251 prev_enabled != !!rdev->wiphy.wowlan_config) 9252 rdev_set_wakeup(rdev, rdev->wiphy.wowlan_config); 9253 9254 return 0; 9255 error: 9256 for (i = 0; i < new_triggers.n_patterns; i++) 9257 kfree(new_triggers.patterns[i].mask); 9258 kfree(new_triggers.patterns); 9259 if (new_triggers.tcp && new_triggers.tcp->sock) 9260 sock_release(new_triggers.tcp->sock); 9261 kfree(new_triggers.tcp); 9262 return err; 9263 } 9264 #endif 9265 9266 static int nl80211_send_coalesce_rules(struct sk_buff *msg, 9267 struct cfg80211_registered_device *rdev) 9268 { 9269 struct nlattr *nl_pats, *nl_pat, *nl_rule, *nl_rules; 9270 int i, j, pat_len; 9271 struct cfg80211_coalesce_rules *rule; 9272 9273 if (!rdev->coalesce->n_rules) 9274 return 0; 9275 9276 nl_rules = nla_nest_start(msg, NL80211_ATTR_COALESCE_RULE); 9277 if (!nl_rules) 9278 return -ENOBUFS; 9279 9280 for (i = 0; i < rdev->coalesce->n_rules; i++) { 9281 nl_rule = nla_nest_start(msg, i + 1); 9282 if (!nl_rule) 9283 return -ENOBUFS; 9284 9285 rule = &rdev->coalesce->rules[i]; 9286 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_DELAY, 9287 rule->delay)) 9288 return -ENOBUFS; 9289 9290 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_CONDITION, 9291 rule->condition)) 9292 return -ENOBUFS; 9293 9294 nl_pats = nla_nest_start(msg, 9295 NL80211_ATTR_COALESCE_RULE_PKT_PATTERN); 9296 if (!nl_pats) 9297 return -ENOBUFS; 9298 9299 for (j = 0; j < rule->n_patterns; j++) { 9300 nl_pat = nla_nest_start(msg, j + 1); 9301 if (!nl_pat) 9302 return -ENOBUFS; 9303 pat_len = rule->patterns[j].pattern_len; 9304 if (nla_put(msg, NL80211_PKTPAT_MASK, 9305 DIV_ROUND_UP(pat_len, 8), 9306 rule->patterns[j].mask) || 9307 nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len, 9308 rule->patterns[j].pattern) || 9309 nla_put_u32(msg, NL80211_PKTPAT_OFFSET, 9310 rule->patterns[j].pkt_offset)) 9311 return -ENOBUFS; 9312 nla_nest_end(msg, nl_pat); 9313 } 9314 nla_nest_end(msg, nl_pats); 9315 nla_nest_end(msg, nl_rule); 9316 } 9317 nla_nest_end(msg, nl_rules); 9318 9319 return 0; 9320 } 9321 9322 static int nl80211_get_coalesce(struct sk_buff *skb, struct genl_info *info) 9323 { 9324 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 9325 struct sk_buff *msg; 9326 void *hdr; 9327 9328 if (!rdev->wiphy.coalesce) 9329 return -EOPNOTSUPP; 9330 9331 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 9332 if (!msg) 9333 return -ENOMEM; 9334 9335 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0, 9336 NL80211_CMD_GET_COALESCE); 9337 if (!hdr) 9338 goto nla_put_failure; 9339 9340 if (rdev->coalesce && nl80211_send_coalesce_rules(msg, rdev)) 9341 goto nla_put_failure; 9342 9343 genlmsg_end(msg, hdr); 9344 return genlmsg_reply(msg, info); 9345 9346 nla_put_failure: 9347 nlmsg_free(msg); 9348 return -ENOBUFS; 9349 } 9350 9351 void cfg80211_rdev_free_coalesce(struct cfg80211_registered_device *rdev) 9352 { 9353 struct cfg80211_coalesce *coalesce = rdev->coalesce; 9354 int i, j; 9355 struct cfg80211_coalesce_rules *rule; 9356 9357 if (!coalesce) 9358 return; 9359 9360 for (i = 0; i < coalesce->n_rules; i++) { 9361 rule = &coalesce->rules[i]; 9362 for (j = 0; j < rule->n_patterns; j++) 9363 kfree(rule->patterns[j].mask); 9364 kfree(rule->patterns); 9365 } 9366 kfree(coalesce->rules); 9367 kfree(coalesce); 9368 rdev->coalesce = NULL; 9369 } 9370 9371 static int nl80211_parse_coalesce_rule(struct cfg80211_registered_device *rdev, 9372 struct nlattr *rule, 9373 struct cfg80211_coalesce_rules *new_rule) 9374 { 9375 int err, i; 9376 const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce; 9377 struct nlattr *tb[NUM_NL80211_ATTR_COALESCE_RULE], *pat; 9378 int rem, pat_len, mask_len, pkt_offset, n_patterns = 0; 9379 struct nlattr *pat_tb[NUM_NL80211_PKTPAT]; 9380 9381 err = nla_parse(tb, NL80211_ATTR_COALESCE_RULE_MAX, nla_data(rule), 9382 nla_len(rule), nl80211_coalesce_policy); 9383 if (err) 9384 return err; 9385 9386 if (tb[NL80211_ATTR_COALESCE_RULE_DELAY]) 9387 new_rule->delay = 9388 nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_DELAY]); 9389 if (new_rule->delay > coalesce->max_delay) 9390 return -EINVAL; 9391 9392 if (tb[NL80211_ATTR_COALESCE_RULE_CONDITION]) 9393 new_rule->condition = 9394 nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_CONDITION]); 9395 if (new_rule->condition != NL80211_COALESCE_CONDITION_MATCH && 9396 new_rule->condition != NL80211_COALESCE_CONDITION_NO_MATCH) 9397 return -EINVAL; 9398 9399 if (!tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN]) 9400 return -EINVAL; 9401 9402 nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN], 9403 rem) 9404 n_patterns++; 9405 if (n_patterns > coalesce->n_patterns) 9406 return -EINVAL; 9407 9408 new_rule->patterns = kcalloc(n_patterns, sizeof(new_rule->patterns[0]), 9409 GFP_KERNEL); 9410 if (!new_rule->patterns) 9411 return -ENOMEM; 9412 9413 new_rule->n_patterns = n_patterns; 9414 i = 0; 9415 9416 nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN], 9417 rem) { 9418 u8 *mask_pat; 9419 9420 nla_parse(pat_tb, MAX_NL80211_PKTPAT, nla_data(pat), 9421 nla_len(pat), NULL); 9422 if (!pat_tb[NL80211_PKTPAT_MASK] || 9423 !pat_tb[NL80211_PKTPAT_PATTERN]) 9424 return -EINVAL; 9425 pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]); 9426 mask_len = DIV_ROUND_UP(pat_len, 8); 9427 if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len) 9428 return -EINVAL; 9429 if (pat_len > coalesce->pattern_max_len || 9430 pat_len < coalesce->pattern_min_len) 9431 return -EINVAL; 9432 9433 if (!pat_tb[NL80211_PKTPAT_OFFSET]) 9434 pkt_offset = 0; 9435 else 9436 pkt_offset = nla_get_u32(pat_tb[NL80211_PKTPAT_OFFSET]); 9437 if (pkt_offset > coalesce->max_pkt_offset) 9438 return -EINVAL; 9439 new_rule->patterns[i].pkt_offset = pkt_offset; 9440 9441 mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL); 9442 if (!mask_pat) 9443 return -ENOMEM; 9444 9445 new_rule->patterns[i].mask = mask_pat; 9446 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]), 9447 mask_len); 9448 9449 mask_pat += mask_len; 9450 new_rule->patterns[i].pattern = mask_pat; 9451 new_rule->patterns[i].pattern_len = pat_len; 9452 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_PATTERN]), 9453 pat_len); 9454 i++; 9455 } 9456 9457 return 0; 9458 } 9459 9460 static int nl80211_set_coalesce(struct sk_buff *skb, struct genl_info *info) 9461 { 9462 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 9463 const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce; 9464 struct cfg80211_coalesce new_coalesce = {}; 9465 struct cfg80211_coalesce *n_coalesce; 9466 int err, rem_rule, n_rules = 0, i, j; 9467 struct nlattr *rule; 9468 struct cfg80211_coalesce_rules *tmp_rule; 9469 9470 if (!rdev->wiphy.coalesce || !rdev->ops->set_coalesce) 9471 return -EOPNOTSUPP; 9472 9473 if (!info->attrs[NL80211_ATTR_COALESCE_RULE]) { 9474 cfg80211_rdev_free_coalesce(rdev); 9475 rdev->ops->set_coalesce(&rdev->wiphy, NULL); 9476 return 0; 9477 } 9478 9479 nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE], 9480 rem_rule) 9481 n_rules++; 9482 if (n_rules > coalesce->n_rules) 9483 return -EINVAL; 9484 9485 new_coalesce.rules = kcalloc(n_rules, sizeof(new_coalesce.rules[0]), 9486 GFP_KERNEL); 9487 if (!new_coalesce.rules) 9488 return -ENOMEM; 9489 9490 new_coalesce.n_rules = n_rules; 9491 i = 0; 9492 9493 nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE], 9494 rem_rule) { 9495 err = nl80211_parse_coalesce_rule(rdev, rule, 9496 &new_coalesce.rules[i]); 9497 if (err) 9498 goto error; 9499 9500 i++; 9501 } 9502 9503 err = rdev->ops->set_coalesce(&rdev->wiphy, &new_coalesce); 9504 if (err) 9505 goto error; 9506 9507 n_coalesce = kmemdup(&new_coalesce, sizeof(new_coalesce), GFP_KERNEL); 9508 if (!n_coalesce) { 9509 err = -ENOMEM; 9510 goto error; 9511 } 9512 cfg80211_rdev_free_coalesce(rdev); 9513 rdev->coalesce = n_coalesce; 9514 9515 return 0; 9516 error: 9517 for (i = 0; i < new_coalesce.n_rules; i++) { 9518 tmp_rule = &new_coalesce.rules[i]; 9519 for (j = 0; j < tmp_rule->n_patterns; j++) 9520 kfree(tmp_rule->patterns[j].mask); 9521 kfree(tmp_rule->patterns); 9522 } 9523 kfree(new_coalesce.rules); 9524 9525 return err; 9526 } 9527 9528 static int nl80211_set_rekey_data(struct sk_buff *skb, struct genl_info *info) 9529 { 9530 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 9531 struct net_device *dev = info->user_ptr[1]; 9532 struct wireless_dev *wdev = dev->ieee80211_ptr; 9533 struct nlattr *tb[NUM_NL80211_REKEY_DATA]; 9534 struct cfg80211_gtk_rekey_data rekey_data; 9535 int err; 9536 9537 if (!info->attrs[NL80211_ATTR_REKEY_DATA]) 9538 return -EINVAL; 9539 9540 err = nla_parse(tb, MAX_NL80211_REKEY_DATA, 9541 nla_data(info->attrs[NL80211_ATTR_REKEY_DATA]), 9542 nla_len(info->attrs[NL80211_ATTR_REKEY_DATA]), 9543 nl80211_rekey_policy); 9544 if (err) 9545 return err; 9546 9547 if (nla_len(tb[NL80211_REKEY_DATA_REPLAY_CTR]) != NL80211_REPLAY_CTR_LEN) 9548 return -ERANGE; 9549 if (nla_len(tb[NL80211_REKEY_DATA_KEK]) != NL80211_KEK_LEN) 9550 return -ERANGE; 9551 if (nla_len(tb[NL80211_REKEY_DATA_KCK]) != NL80211_KCK_LEN) 9552 return -ERANGE; 9553 9554 rekey_data.kek = nla_data(tb[NL80211_REKEY_DATA_KEK]); 9555 rekey_data.kck = nla_data(tb[NL80211_REKEY_DATA_KCK]); 9556 rekey_data.replay_ctr = nla_data(tb[NL80211_REKEY_DATA_REPLAY_CTR]); 9557 9558 wdev_lock(wdev); 9559 if (!wdev->current_bss) { 9560 err = -ENOTCONN; 9561 goto out; 9562 } 9563 9564 if (!rdev->ops->set_rekey_data) { 9565 err = -EOPNOTSUPP; 9566 goto out; 9567 } 9568 9569 err = rdev_set_rekey_data(rdev, dev, &rekey_data); 9570 out: 9571 wdev_unlock(wdev); 9572 return err; 9573 } 9574 9575 static int nl80211_register_unexpected_frame(struct sk_buff *skb, 9576 struct genl_info *info) 9577 { 9578 struct net_device *dev = info->user_ptr[1]; 9579 struct wireless_dev *wdev = dev->ieee80211_ptr; 9580 9581 if (wdev->iftype != NL80211_IFTYPE_AP && 9582 wdev->iftype != NL80211_IFTYPE_P2P_GO) 9583 return -EINVAL; 9584 9585 if (wdev->ap_unexpected_nlportid) 9586 return -EBUSY; 9587 9588 wdev->ap_unexpected_nlportid = info->snd_portid; 9589 return 0; 9590 } 9591 9592 static int nl80211_probe_client(struct sk_buff *skb, 9593 struct genl_info *info) 9594 { 9595 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 9596 struct net_device *dev = info->user_ptr[1]; 9597 struct wireless_dev *wdev = dev->ieee80211_ptr; 9598 struct sk_buff *msg; 9599 void *hdr; 9600 const u8 *addr; 9601 u64 cookie; 9602 int err; 9603 9604 if (wdev->iftype != NL80211_IFTYPE_AP && 9605 wdev->iftype != NL80211_IFTYPE_P2P_GO) 9606 return -EOPNOTSUPP; 9607 9608 if (!info->attrs[NL80211_ATTR_MAC]) 9609 return -EINVAL; 9610 9611 if (!rdev->ops->probe_client) 9612 return -EOPNOTSUPP; 9613 9614 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 9615 if (!msg) 9616 return -ENOMEM; 9617 9618 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0, 9619 NL80211_CMD_PROBE_CLIENT); 9620 if (!hdr) { 9621 err = -ENOBUFS; 9622 goto free_msg; 9623 } 9624 9625 addr = nla_data(info->attrs[NL80211_ATTR_MAC]); 9626 9627 err = rdev_probe_client(rdev, dev, addr, &cookie); 9628 if (err) 9629 goto free_msg; 9630 9631 if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie)) 9632 goto nla_put_failure; 9633 9634 genlmsg_end(msg, hdr); 9635 9636 return genlmsg_reply(msg, info); 9637 9638 nla_put_failure: 9639 err = -ENOBUFS; 9640 free_msg: 9641 nlmsg_free(msg); 9642 return err; 9643 } 9644 9645 static int nl80211_register_beacons(struct sk_buff *skb, struct genl_info *info) 9646 { 9647 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 9648 struct cfg80211_beacon_registration *reg, *nreg; 9649 int rv; 9650 9651 if (!(rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS)) 9652 return -EOPNOTSUPP; 9653 9654 nreg = kzalloc(sizeof(*nreg), GFP_KERNEL); 9655 if (!nreg) 9656 return -ENOMEM; 9657 9658 /* First, check if already registered. */ 9659 spin_lock_bh(&rdev->beacon_registrations_lock); 9660 list_for_each_entry(reg, &rdev->beacon_registrations, list) { 9661 if (reg->nlportid == info->snd_portid) { 9662 rv = -EALREADY; 9663 goto out_err; 9664 } 9665 } 9666 /* Add it to the list */ 9667 nreg->nlportid = info->snd_portid; 9668 list_add(&nreg->list, &rdev->beacon_registrations); 9669 9670 spin_unlock_bh(&rdev->beacon_registrations_lock); 9671 9672 return 0; 9673 out_err: 9674 spin_unlock_bh(&rdev->beacon_registrations_lock); 9675 kfree(nreg); 9676 return rv; 9677 } 9678 9679 static int nl80211_start_p2p_device(struct sk_buff *skb, struct genl_info *info) 9680 { 9681 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 9682 struct wireless_dev *wdev = info->user_ptr[1]; 9683 int err; 9684 9685 if (!rdev->ops->start_p2p_device) 9686 return -EOPNOTSUPP; 9687 9688 if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE) 9689 return -EOPNOTSUPP; 9690 9691 if (wdev->p2p_started) 9692 return 0; 9693 9694 if (rfkill_blocked(rdev->rfkill)) 9695 return -ERFKILL; 9696 9697 err = rdev_start_p2p_device(rdev, wdev); 9698 if (err) 9699 return err; 9700 9701 wdev->p2p_started = true; 9702 rdev->opencount++; 9703 9704 return 0; 9705 } 9706 9707 static int nl80211_stop_p2p_device(struct sk_buff *skb, struct genl_info *info) 9708 { 9709 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 9710 struct wireless_dev *wdev = info->user_ptr[1]; 9711 9712 if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE) 9713 return -EOPNOTSUPP; 9714 9715 if (!rdev->ops->stop_p2p_device) 9716 return -EOPNOTSUPP; 9717 9718 cfg80211_stop_p2p_device(rdev, wdev); 9719 9720 return 0; 9721 } 9722 9723 static int nl80211_get_protocol_features(struct sk_buff *skb, 9724 struct genl_info *info) 9725 { 9726 void *hdr; 9727 struct sk_buff *msg; 9728 9729 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 9730 if (!msg) 9731 return -ENOMEM; 9732 9733 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0, 9734 NL80211_CMD_GET_PROTOCOL_FEATURES); 9735 if (!hdr) 9736 goto nla_put_failure; 9737 9738 if (nla_put_u32(msg, NL80211_ATTR_PROTOCOL_FEATURES, 9739 NL80211_PROTOCOL_FEATURE_SPLIT_WIPHY_DUMP)) 9740 goto nla_put_failure; 9741 9742 genlmsg_end(msg, hdr); 9743 return genlmsg_reply(msg, info); 9744 9745 nla_put_failure: 9746 kfree_skb(msg); 9747 return -ENOBUFS; 9748 } 9749 9750 static int nl80211_update_ft_ies(struct sk_buff *skb, struct genl_info *info) 9751 { 9752 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 9753 struct cfg80211_update_ft_ies_params ft_params; 9754 struct net_device *dev = info->user_ptr[1]; 9755 9756 if (!rdev->ops->update_ft_ies) 9757 return -EOPNOTSUPP; 9758 9759 if (!info->attrs[NL80211_ATTR_MDID] || 9760 !is_valid_ie_attr(info->attrs[NL80211_ATTR_IE])) 9761 return -EINVAL; 9762 9763 memset(&ft_params, 0, sizeof(ft_params)); 9764 ft_params.md = nla_get_u16(info->attrs[NL80211_ATTR_MDID]); 9765 ft_params.ie = nla_data(info->attrs[NL80211_ATTR_IE]); 9766 ft_params.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); 9767 9768 return rdev_update_ft_ies(rdev, dev, &ft_params); 9769 } 9770 9771 static int nl80211_crit_protocol_start(struct sk_buff *skb, 9772 struct genl_info *info) 9773 { 9774 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 9775 struct wireless_dev *wdev = info->user_ptr[1]; 9776 enum nl80211_crit_proto_id proto = NL80211_CRIT_PROTO_UNSPEC; 9777 u16 duration; 9778 int ret; 9779 9780 if (!rdev->ops->crit_proto_start) 9781 return -EOPNOTSUPP; 9782 9783 if (WARN_ON(!rdev->ops->crit_proto_stop)) 9784 return -EINVAL; 9785 9786 if (rdev->crit_proto_nlportid) 9787 return -EBUSY; 9788 9789 /* determine protocol if provided */ 9790 if (info->attrs[NL80211_ATTR_CRIT_PROT_ID]) 9791 proto = nla_get_u16(info->attrs[NL80211_ATTR_CRIT_PROT_ID]); 9792 9793 if (proto >= NUM_NL80211_CRIT_PROTO) 9794 return -EINVAL; 9795 9796 /* timeout must be provided */ 9797 if (!info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION]) 9798 return -EINVAL; 9799 9800 duration = 9801 nla_get_u16(info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION]); 9802 9803 if (duration > NL80211_CRIT_PROTO_MAX_DURATION) 9804 return -ERANGE; 9805 9806 ret = rdev_crit_proto_start(rdev, wdev, proto, duration); 9807 if (!ret) 9808 rdev->crit_proto_nlportid = info->snd_portid; 9809 9810 return ret; 9811 } 9812 9813 static int nl80211_crit_protocol_stop(struct sk_buff *skb, 9814 struct genl_info *info) 9815 { 9816 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 9817 struct wireless_dev *wdev = info->user_ptr[1]; 9818 9819 if (!rdev->ops->crit_proto_stop) 9820 return -EOPNOTSUPP; 9821 9822 if (rdev->crit_proto_nlportid) { 9823 rdev->crit_proto_nlportid = 0; 9824 rdev_crit_proto_stop(rdev, wdev); 9825 } 9826 return 0; 9827 } 9828 9829 static int nl80211_vendor_cmd(struct sk_buff *skb, struct genl_info *info) 9830 { 9831 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 9832 struct wireless_dev *wdev = 9833 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs); 9834 int i, err; 9835 u32 vid, subcmd; 9836 9837 if (!rdev->wiphy.vendor_commands) 9838 return -EOPNOTSUPP; 9839 9840 if (IS_ERR(wdev)) { 9841 err = PTR_ERR(wdev); 9842 if (err != -EINVAL) 9843 return err; 9844 wdev = NULL; 9845 } else if (wdev->wiphy != &rdev->wiphy) { 9846 return -EINVAL; 9847 } 9848 9849 if (!info->attrs[NL80211_ATTR_VENDOR_ID] || 9850 !info->attrs[NL80211_ATTR_VENDOR_SUBCMD]) 9851 return -EINVAL; 9852 9853 vid = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_ID]); 9854 subcmd = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_SUBCMD]); 9855 for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) { 9856 const struct wiphy_vendor_command *vcmd; 9857 void *data = NULL; 9858 int len = 0; 9859 9860 vcmd = &rdev->wiphy.vendor_commands[i]; 9861 9862 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd) 9863 continue; 9864 9865 if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV | 9866 WIPHY_VENDOR_CMD_NEED_NETDEV)) { 9867 if (!wdev) 9868 return -EINVAL; 9869 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV && 9870 !wdev->netdev) 9871 return -EINVAL; 9872 9873 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) { 9874 if (wdev->netdev && 9875 !netif_running(wdev->netdev)) 9876 return -ENETDOWN; 9877 if (!wdev->netdev && !wdev->p2p_started) 9878 return -ENETDOWN; 9879 } 9880 } else { 9881 wdev = NULL; 9882 } 9883 9884 if (info->attrs[NL80211_ATTR_VENDOR_DATA]) { 9885 data = nla_data(info->attrs[NL80211_ATTR_VENDOR_DATA]); 9886 len = nla_len(info->attrs[NL80211_ATTR_VENDOR_DATA]); 9887 } 9888 9889 rdev->cur_cmd_info = info; 9890 err = rdev->wiphy.vendor_commands[i].doit(&rdev->wiphy, wdev, 9891 data, len); 9892 rdev->cur_cmd_info = NULL; 9893 return err; 9894 } 9895 9896 return -EOPNOTSUPP; 9897 } 9898 9899 struct sk_buff *__cfg80211_alloc_reply_skb(struct wiphy *wiphy, 9900 enum nl80211_commands cmd, 9901 enum nl80211_attrs attr, 9902 int approxlen) 9903 { 9904 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 9905 9906 if (WARN_ON(!rdev->cur_cmd_info)) 9907 return NULL; 9908 9909 return __cfg80211_alloc_vendor_skb(rdev, approxlen, 9910 rdev->cur_cmd_info->snd_portid, 9911 rdev->cur_cmd_info->snd_seq, 9912 cmd, attr, NULL, GFP_KERNEL); 9913 } 9914 EXPORT_SYMBOL(__cfg80211_alloc_reply_skb); 9915 9916 int cfg80211_vendor_cmd_reply(struct sk_buff *skb) 9917 { 9918 struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0]; 9919 void *hdr = ((void **)skb->cb)[1]; 9920 struct nlattr *data = ((void **)skb->cb)[2]; 9921 9922 /* clear CB data for netlink core to own from now on */ 9923 memset(skb->cb, 0, sizeof(skb->cb)); 9924 9925 if (WARN_ON(!rdev->cur_cmd_info)) { 9926 kfree_skb(skb); 9927 return -EINVAL; 9928 } 9929 9930 nla_nest_end(skb, data); 9931 genlmsg_end(skb, hdr); 9932 return genlmsg_reply(skb, rdev->cur_cmd_info); 9933 } 9934 EXPORT_SYMBOL_GPL(cfg80211_vendor_cmd_reply); 9935 9936 9937 static int nl80211_set_qos_map(struct sk_buff *skb, 9938 struct genl_info *info) 9939 { 9940 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 9941 struct cfg80211_qos_map *qos_map = NULL; 9942 struct net_device *dev = info->user_ptr[1]; 9943 u8 *pos, len, num_des, des_len, des; 9944 int ret; 9945 9946 if (!rdev->ops->set_qos_map) 9947 return -EOPNOTSUPP; 9948 9949 if (info->attrs[NL80211_ATTR_QOS_MAP]) { 9950 pos = nla_data(info->attrs[NL80211_ATTR_QOS_MAP]); 9951 len = nla_len(info->attrs[NL80211_ATTR_QOS_MAP]); 9952 9953 if (len % 2 || len < IEEE80211_QOS_MAP_LEN_MIN || 9954 len > IEEE80211_QOS_MAP_LEN_MAX) 9955 return -EINVAL; 9956 9957 qos_map = kzalloc(sizeof(struct cfg80211_qos_map), GFP_KERNEL); 9958 if (!qos_map) 9959 return -ENOMEM; 9960 9961 num_des = (len - IEEE80211_QOS_MAP_LEN_MIN) >> 1; 9962 if (num_des) { 9963 des_len = num_des * 9964 sizeof(struct cfg80211_dscp_exception); 9965 memcpy(qos_map->dscp_exception, pos, des_len); 9966 qos_map->num_des = num_des; 9967 for (des = 0; des < num_des; des++) { 9968 if (qos_map->dscp_exception[des].up > 7) { 9969 kfree(qos_map); 9970 return -EINVAL; 9971 } 9972 } 9973 pos += des_len; 9974 } 9975 memcpy(qos_map->up, pos, IEEE80211_QOS_MAP_LEN_MIN); 9976 } 9977 9978 wdev_lock(dev->ieee80211_ptr); 9979 ret = nl80211_key_allowed(dev->ieee80211_ptr); 9980 if (!ret) 9981 ret = rdev_set_qos_map(rdev, dev, qos_map); 9982 wdev_unlock(dev->ieee80211_ptr); 9983 9984 kfree(qos_map); 9985 return ret; 9986 } 9987 9988 static int nl80211_add_tx_ts(struct sk_buff *skb, struct genl_info *info) 9989 { 9990 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 9991 struct net_device *dev = info->user_ptr[1]; 9992 struct wireless_dev *wdev = dev->ieee80211_ptr; 9993 const u8 *peer; 9994 u8 tsid, up; 9995 u16 admitted_time = 0; 9996 int err; 9997 9998 if (!(rdev->wiphy.features & NL80211_FEATURE_SUPPORTS_WMM_ADMISSION)) 9999 return -EOPNOTSUPP; 10000 10001 if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC] || 10002 !info->attrs[NL80211_ATTR_USER_PRIO]) 10003 return -EINVAL; 10004 10005 tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]); 10006 if (tsid >= IEEE80211_NUM_TIDS) 10007 return -EINVAL; 10008 10009 up = nla_get_u8(info->attrs[NL80211_ATTR_USER_PRIO]); 10010 if (up >= IEEE80211_NUM_UPS) 10011 return -EINVAL; 10012 10013 /* WMM uses TIDs 0-7 even for TSPEC */ 10014 if (tsid >= IEEE80211_FIRST_TSPEC_TSID) { 10015 /* TODO: handle 802.11 TSPEC/admission control 10016 * need more attributes for that (e.g. BA session requirement); 10017 * change the WMM adminssion test above to allow both then 10018 */ 10019 return -EINVAL; 10020 } 10021 10022 peer = nla_data(info->attrs[NL80211_ATTR_MAC]); 10023 10024 if (info->attrs[NL80211_ATTR_ADMITTED_TIME]) { 10025 admitted_time = 10026 nla_get_u16(info->attrs[NL80211_ATTR_ADMITTED_TIME]); 10027 if (!admitted_time) 10028 return -EINVAL; 10029 } 10030 10031 wdev_lock(wdev); 10032 switch (wdev->iftype) { 10033 case NL80211_IFTYPE_STATION: 10034 case NL80211_IFTYPE_P2P_CLIENT: 10035 if (wdev->current_bss) 10036 break; 10037 err = -ENOTCONN; 10038 goto out; 10039 default: 10040 err = -EOPNOTSUPP; 10041 goto out; 10042 } 10043 10044 err = rdev_add_tx_ts(rdev, dev, tsid, peer, up, admitted_time); 10045 10046 out: 10047 wdev_unlock(wdev); 10048 return err; 10049 } 10050 10051 static int nl80211_del_tx_ts(struct sk_buff *skb, struct genl_info *info) 10052 { 10053 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 10054 struct net_device *dev = info->user_ptr[1]; 10055 struct wireless_dev *wdev = dev->ieee80211_ptr; 10056 const u8 *peer; 10057 u8 tsid; 10058 int err; 10059 10060 if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC]) 10061 return -EINVAL; 10062 10063 tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]); 10064 peer = nla_data(info->attrs[NL80211_ATTR_MAC]); 10065 10066 wdev_lock(wdev); 10067 err = rdev_del_tx_ts(rdev, dev, tsid, peer); 10068 wdev_unlock(wdev); 10069 10070 return err; 10071 } 10072 10073 static int nl80211_tdls_channel_switch(struct sk_buff *skb, 10074 struct genl_info *info) 10075 { 10076 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 10077 struct net_device *dev = info->user_ptr[1]; 10078 struct wireless_dev *wdev = dev->ieee80211_ptr; 10079 struct cfg80211_chan_def chandef = {}; 10080 const u8 *addr; 10081 u8 oper_class; 10082 int err; 10083 10084 if (!rdev->ops->tdls_channel_switch || 10085 !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH)) 10086 return -EOPNOTSUPP; 10087 10088 switch (dev->ieee80211_ptr->iftype) { 10089 case NL80211_IFTYPE_STATION: 10090 case NL80211_IFTYPE_P2P_CLIENT: 10091 break; 10092 default: 10093 return -EOPNOTSUPP; 10094 } 10095 10096 if (!info->attrs[NL80211_ATTR_MAC] || 10097 !info->attrs[NL80211_ATTR_OPER_CLASS]) 10098 return -EINVAL; 10099 10100 err = nl80211_parse_chandef(rdev, info, &chandef); 10101 if (err) 10102 return err; 10103 10104 /* 10105 * Don't allow wide channels on the 2.4Ghz band, as per IEEE802.11-2012 10106 * section 10.22.6.2.1. Disallow 5/10Mhz channels as well for now, the 10107 * specification is not defined for them. 10108 */ 10109 if (chandef.chan->band == IEEE80211_BAND_2GHZ && 10110 chandef.width != NL80211_CHAN_WIDTH_20_NOHT && 10111 chandef.width != NL80211_CHAN_WIDTH_20) 10112 return -EINVAL; 10113 10114 /* we will be active on the TDLS link */ 10115 if (!cfg80211_reg_can_beacon(&rdev->wiphy, &chandef, wdev->iftype)) 10116 return -EINVAL; 10117 10118 /* don't allow switching to DFS channels */ 10119 if (cfg80211_chandef_dfs_required(wdev->wiphy, &chandef, wdev->iftype)) 10120 return -EINVAL; 10121 10122 addr = nla_data(info->attrs[NL80211_ATTR_MAC]); 10123 oper_class = nla_get_u8(info->attrs[NL80211_ATTR_OPER_CLASS]); 10124 10125 wdev_lock(wdev); 10126 err = rdev_tdls_channel_switch(rdev, dev, addr, oper_class, &chandef); 10127 wdev_unlock(wdev); 10128 10129 return err; 10130 } 10131 10132 static int nl80211_tdls_cancel_channel_switch(struct sk_buff *skb, 10133 struct genl_info *info) 10134 { 10135 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 10136 struct net_device *dev = info->user_ptr[1]; 10137 struct wireless_dev *wdev = dev->ieee80211_ptr; 10138 const u8 *addr; 10139 10140 if (!rdev->ops->tdls_channel_switch || 10141 !rdev->ops->tdls_cancel_channel_switch || 10142 !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH)) 10143 return -EOPNOTSUPP; 10144 10145 switch (dev->ieee80211_ptr->iftype) { 10146 case NL80211_IFTYPE_STATION: 10147 case NL80211_IFTYPE_P2P_CLIENT: 10148 break; 10149 default: 10150 return -EOPNOTSUPP; 10151 } 10152 10153 if (!info->attrs[NL80211_ATTR_MAC]) 10154 return -EINVAL; 10155 10156 addr = nla_data(info->attrs[NL80211_ATTR_MAC]); 10157 10158 wdev_lock(wdev); 10159 rdev_tdls_cancel_channel_switch(rdev, dev, addr); 10160 wdev_unlock(wdev); 10161 10162 return 0; 10163 } 10164 10165 #define NL80211_FLAG_NEED_WIPHY 0x01 10166 #define NL80211_FLAG_NEED_NETDEV 0x02 10167 #define NL80211_FLAG_NEED_RTNL 0x04 10168 #define NL80211_FLAG_CHECK_NETDEV_UP 0x08 10169 #define NL80211_FLAG_NEED_NETDEV_UP (NL80211_FLAG_NEED_NETDEV |\ 10170 NL80211_FLAG_CHECK_NETDEV_UP) 10171 #define NL80211_FLAG_NEED_WDEV 0x10 10172 /* If a netdev is associated, it must be UP, P2P must be started */ 10173 #define NL80211_FLAG_NEED_WDEV_UP (NL80211_FLAG_NEED_WDEV |\ 10174 NL80211_FLAG_CHECK_NETDEV_UP) 10175 #define NL80211_FLAG_CLEAR_SKB 0x20 10176 10177 static int nl80211_pre_doit(const struct genl_ops *ops, struct sk_buff *skb, 10178 struct genl_info *info) 10179 { 10180 struct cfg80211_registered_device *rdev; 10181 struct wireless_dev *wdev; 10182 struct net_device *dev; 10183 bool rtnl = ops->internal_flags & NL80211_FLAG_NEED_RTNL; 10184 10185 if (rtnl) 10186 rtnl_lock(); 10187 10188 if (ops->internal_flags & NL80211_FLAG_NEED_WIPHY) { 10189 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info); 10190 if (IS_ERR(rdev)) { 10191 if (rtnl) 10192 rtnl_unlock(); 10193 return PTR_ERR(rdev); 10194 } 10195 info->user_ptr[0] = rdev; 10196 } else if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV || 10197 ops->internal_flags & NL80211_FLAG_NEED_WDEV) { 10198 ASSERT_RTNL(); 10199 10200 wdev = __cfg80211_wdev_from_attrs(genl_info_net(info), 10201 info->attrs); 10202 if (IS_ERR(wdev)) { 10203 if (rtnl) 10204 rtnl_unlock(); 10205 return PTR_ERR(wdev); 10206 } 10207 10208 dev = wdev->netdev; 10209 rdev = wiphy_to_rdev(wdev->wiphy); 10210 10211 if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV) { 10212 if (!dev) { 10213 if (rtnl) 10214 rtnl_unlock(); 10215 return -EINVAL; 10216 } 10217 10218 info->user_ptr[1] = dev; 10219 } else { 10220 info->user_ptr[1] = wdev; 10221 } 10222 10223 if (dev) { 10224 if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP && 10225 !netif_running(dev)) { 10226 if (rtnl) 10227 rtnl_unlock(); 10228 return -ENETDOWN; 10229 } 10230 10231 dev_hold(dev); 10232 } else if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP) { 10233 if (!wdev->p2p_started) { 10234 if (rtnl) 10235 rtnl_unlock(); 10236 return -ENETDOWN; 10237 } 10238 } 10239 10240 info->user_ptr[0] = rdev; 10241 } 10242 10243 return 0; 10244 } 10245 10246 static void nl80211_post_doit(const struct genl_ops *ops, struct sk_buff *skb, 10247 struct genl_info *info) 10248 { 10249 if (info->user_ptr[1]) { 10250 if (ops->internal_flags & NL80211_FLAG_NEED_WDEV) { 10251 struct wireless_dev *wdev = info->user_ptr[1]; 10252 10253 if (wdev->netdev) 10254 dev_put(wdev->netdev); 10255 } else { 10256 dev_put(info->user_ptr[1]); 10257 } 10258 } 10259 10260 if (ops->internal_flags & NL80211_FLAG_NEED_RTNL) 10261 rtnl_unlock(); 10262 10263 /* If needed, clear the netlink message payload from the SKB 10264 * as it might contain key data that shouldn't stick around on 10265 * the heap after the SKB is freed. The netlink message header 10266 * is still needed for further processing, so leave it intact. 10267 */ 10268 if (ops->internal_flags & NL80211_FLAG_CLEAR_SKB) { 10269 struct nlmsghdr *nlh = nlmsg_hdr(skb); 10270 10271 memset(nlmsg_data(nlh), 0, nlmsg_len(nlh)); 10272 } 10273 } 10274 10275 static const struct genl_ops nl80211_ops[] = { 10276 { 10277 .cmd = NL80211_CMD_GET_WIPHY, 10278 .doit = nl80211_get_wiphy, 10279 .dumpit = nl80211_dump_wiphy, 10280 .done = nl80211_dump_wiphy_done, 10281 .policy = nl80211_policy, 10282 /* can be retrieved by unprivileged users */ 10283 .internal_flags = NL80211_FLAG_NEED_WIPHY | 10284 NL80211_FLAG_NEED_RTNL, 10285 }, 10286 { 10287 .cmd = NL80211_CMD_SET_WIPHY, 10288 .doit = nl80211_set_wiphy, 10289 .policy = nl80211_policy, 10290 .flags = GENL_ADMIN_PERM, 10291 .internal_flags = NL80211_FLAG_NEED_RTNL, 10292 }, 10293 { 10294 .cmd = NL80211_CMD_GET_INTERFACE, 10295 .doit = nl80211_get_interface, 10296 .dumpit = nl80211_dump_interface, 10297 .policy = nl80211_policy, 10298 /* can be retrieved by unprivileged users */ 10299 .internal_flags = NL80211_FLAG_NEED_WDEV | 10300 NL80211_FLAG_NEED_RTNL, 10301 }, 10302 { 10303 .cmd = NL80211_CMD_SET_INTERFACE, 10304 .doit = nl80211_set_interface, 10305 .policy = nl80211_policy, 10306 .flags = GENL_ADMIN_PERM, 10307 .internal_flags = NL80211_FLAG_NEED_NETDEV | 10308 NL80211_FLAG_NEED_RTNL, 10309 }, 10310 { 10311 .cmd = NL80211_CMD_NEW_INTERFACE, 10312 .doit = nl80211_new_interface, 10313 .policy = nl80211_policy, 10314 .flags = GENL_ADMIN_PERM, 10315 .internal_flags = NL80211_FLAG_NEED_WIPHY | 10316 NL80211_FLAG_NEED_RTNL, 10317 }, 10318 { 10319 .cmd = NL80211_CMD_DEL_INTERFACE, 10320 .doit = nl80211_del_interface, 10321 .policy = nl80211_policy, 10322 .flags = GENL_ADMIN_PERM, 10323 .internal_flags = NL80211_FLAG_NEED_WDEV | 10324 NL80211_FLAG_NEED_RTNL, 10325 }, 10326 { 10327 .cmd = NL80211_CMD_GET_KEY, 10328 .doit = nl80211_get_key, 10329 .policy = nl80211_policy, 10330 .flags = GENL_ADMIN_PERM, 10331 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10332 NL80211_FLAG_NEED_RTNL, 10333 }, 10334 { 10335 .cmd = NL80211_CMD_SET_KEY, 10336 .doit = nl80211_set_key, 10337 .policy = nl80211_policy, 10338 .flags = GENL_ADMIN_PERM, 10339 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10340 NL80211_FLAG_NEED_RTNL | 10341 NL80211_FLAG_CLEAR_SKB, 10342 }, 10343 { 10344 .cmd = NL80211_CMD_NEW_KEY, 10345 .doit = nl80211_new_key, 10346 .policy = nl80211_policy, 10347 .flags = GENL_ADMIN_PERM, 10348 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10349 NL80211_FLAG_NEED_RTNL | 10350 NL80211_FLAG_CLEAR_SKB, 10351 }, 10352 { 10353 .cmd = NL80211_CMD_DEL_KEY, 10354 .doit = nl80211_del_key, 10355 .policy = nl80211_policy, 10356 .flags = GENL_ADMIN_PERM, 10357 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10358 NL80211_FLAG_NEED_RTNL, 10359 }, 10360 { 10361 .cmd = NL80211_CMD_SET_BEACON, 10362 .policy = nl80211_policy, 10363 .flags = GENL_ADMIN_PERM, 10364 .doit = nl80211_set_beacon, 10365 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10366 NL80211_FLAG_NEED_RTNL, 10367 }, 10368 { 10369 .cmd = NL80211_CMD_START_AP, 10370 .policy = nl80211_policy, 10371 .flags = GENL_ADMIN_PERM, 10372 .doit = nl80211_start_ap, 10373 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10374 NL80211_FLAG_NEED_RTNL, 10375 }, 10376 { 10377 .cmd = NL80211_CMD_STOP_AP, 10378 .policy = nl80211_policy, 10379 .flags = GENL_ADMIN_PERM, 10380 .doit = nl80211_stop_ap, 10381 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10382 NL80211_FLAG_NEED_RTNL, 10383 }, 10384 { 10385 .cmd = NL80211_CMD_GET_STATION, 10386 .doit = nl80211_get_station, 10387 .dumpit = nl80211_dump_station, 10388 .policy = nl80211_policy, 10389 .internal_flags = NL80211_FLAG_NEED_NETDEV | 10390 NL80211_FLAG_NEED_RTNL, 10391 }, 10392 { 10393 .cmd = NL80211_CMD_SET_STATION, 10394 .doit = nl80211_set_station, 10395 .policy = nl80211_policy, 10396 .flags = GENL_ADMIN_PERM, 10397 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10398 NL80211_FLAG_NEED_RTNL, 10399 }, 10400 { 10401 .cmd = NL80211_CMD_NEW_STATION, 10402 .doit = nl80211_new_station, 10403 .policy = nl80211_policy, 10404 .flags = GENL_ADMIN_PERM, 10405 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10406 NL80211_FLAG_NEED_RTNL, 10407 }, 10408 { 10409 .cmd = NL80211_CMD_DEL_STATION, 10410 .doit = nl80211_del_station, 10411 .policy = nl80211_policy, 10412 .flags = GENL_ADMIN_PERM, 10413 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10414 NL80211_FLAG_NEED_RTNL, 10415 }, 10416 { 10417 .cmd = NL80211_CMD_GET_MPATH, 10418 .doit = nl80211_get_mpath, 10419 .dumpit = nl80211_dump_mpath, 10420 .policy = nl80211_policy, 10421 .flags = GENL_ADMIN_PERM, 10422 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10423 NL80211_FLAG_NEED_RTNL, 10424 }, 10425 { 10426 .cmd = NL80211_CMD_GET_MPP, 10427 .doit = nl80211_get_mpp, 10428 .dumpit = nl80211_dump_mpp, 10429 .policy = nl80211_policy, 10430 .flags = GENL_ADMIN_PERM, 10431 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10432 NL80211_FLAG_NEED_RTNL, 10433 }, 10434 { 10435 .cmd = NL80211_CMD_SET_MPATH, 10436 .doit = nl80211_set_mpath, 10437 .policy = nl80211_policy, 10438 .flags = GENL_ADMIN_PERM, 10439 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10440 NL80211_FLAG_NEED_RTNL, 10441 }, 10442 { 10443 .cmd = NL80211_CMD_NEW_MPATH, 10444 .doit = nl80211_new_mpath, 10445 .policy = nl80211_policy, 10446 .flags = GENL_ADMIN_PERM, 10447 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10448 NL80211_FLAG_NEED_RTNL, 10449 }, 10450 { 10451 .cmd = NL80211_CMD_DEL_MPATH, 10452 .doit = nl80211_del_mpath, 10453 .policy = nl80211_policy, 10454 .flags = GENL_ADMIN_PERM, 10455 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10456 NL80211_FLAG_NEED_RTNL, 10457 }, 10458 { 10459 .cmd = NL80211_CMD_SET_BSS, 10460 .doit = nl80211_set_bss, 10461 .policy = nl80211_policy, 10462 .flags = GENL_ADMIN_PERM, 10463 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10464 NL80211_FLAG_NEED_RTNL, 10465 }, 10466 { 10467 .cmd = NL80211_CMD_GET_REG, 10468 .doit = nl80211_get_reg_do, 10469 .dumpit = nl80211_get_reg_dump, 10470 .policy = nl80211_policy, 10471 .internal_flags = NL80211_FLAG_NEED_RTNL, 10472 /* can be retrieved by unprivileged users */ 10473 }, 10474 { 10475 .cmd = NL80211_CMD_SET_REG, 10476 .doit = nl80211_set_reg, 10477 .policy = nl80211_policy, 10478 .flags = GENL_ADMIN_PERM, 10479 .internal_flags = NL80211_FLAG_NEED_RTNL, 10480 }, 10481 { 10482 .cmd = NL80211_CMD_REQ_SET_REG, 10483 .doit = nl80211_req_set_reg, 10484 .policy = nl80211_policy, 10485 .flags = GENL_ADMIN_PERM, 10486 }, 10487 { 10488 .cmd = NL80211_CMD_GET_MESH_CONFIG, 10489 .doit = nl80211_get_mesh_config, 10490 .policy = nl80211_policy, 10491 /* can be retrieved by unprivileged users */ 10492 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10493 NL80211_FLAG_NEED_RTNL, 10494 }, 10495 { 10496 .cmd = NL80211_CMD_SET_MESH_CONFIG, 10497 .doit = nl80211_update_mesh_config, 10498 .policy = nl80211_policy, 10499 .flags = GENL_ADMIN_PERM, 10500 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10501 NL80211_FLAG_NEED_RTNL, 10502 }, 10503 { 10504 .cmd = NL80211_CMD_TRIGGER_SCAN, 10505 .doit = nl80211_trigger_scan, 10506 .policy = nl80211_policy, 10507 .flags = GENL_ADMIN_PERM, 10508 .internal_flags = NL80211_FLAG_NEED_WDEV_UP | 10509 NL80211_FLAG_NEED_RTNL, 10510 }, 10511 { 10512 .cmd = NL80211_CMD_GET_SCAN, 10513 .policy = nl80211_policy, 10514 .dumpit = nl80211_dump_scan, 10515 }, 10516 { 10517 .cmd = NL80211_CMD_START_SCHED_SCAN, 10518 .doit = nl80211_start_sched_scan, 10519 .policy = nl80211_policy, 10520 .flags = GENL_ADMIN_PERM, 10521 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10522 NL80211_FLAG_NEED_RTNL, 10523 }, 10524 { 10525 .cmd = NL80211_CMD_STOP_SCHED_SCAN, 10526 .doit = nl80211_stop_sched_scan, 10527 .policy = nl80211_policy, 10528 .flags = GENL_ADMIN_PERM, 10529 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10530 NL80211_FLAG_NEED_RTNL, 10531 }, 10532 { 10533 .cmd = NL80211_CMD_AUTHENTICATE, 10534 .doit = nl80211_authenticate, 10535 .policy = nl80211_policy, 10536 .flags = GENL_ADMIN_PERM, 10537 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10538 NL80211_FLAG_NEED_RTNL | 10539 NL80211_FLAG_CLEAR_SKB, 10540 }, 10541 { 10542 .cmd = NL80211_CMD_ASSOCIATE, 10543 .doit = nl80211_associate, 10544 .policy = nl80211_policy, 10545 .flags = GENL_ADMIN_PERM, 10546 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10547 NL80211_FLAG_NEED_RTNL, 10548 }, 10549 { 10550 .cmd = NL80211_CMD_DEAUTHENTICATE, 10551 .doit = nl80211_deauthenticate, 10552 .policy = nl80211_policy, 10553 .flags = GENL_ADMIN_PERM, 10554 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10555 NL80211_FLAG_NEED_RTNL, 10556 }, 10557 { 10558 .cmd = NL80211_CMD_DISASSOCIATE, 10559 .doit = nl80211_disassociate, 10560 .policy = nl80211_policy, 10561 .flags = GENL_ADMIN_PERM, 10562 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10563 NL80211_FLAG_NEED_RTNL, 10564 }, 10565 { 10566 .cmd = NL80211_CMD_JOIN_IBSS, 10567 .doit = nl80211_join_ibss, 10568 .policy = nl80211_policy, 10569 .flags = GENL_ADMIN_PERM, 10570 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10571 NL80211_FLAG_NEED_RTNL, 10572 }, 10573 { 10574 .cmd = NL80211_CMD_LEAVE_IBSS, 10575 .doit = nl80211_leave_ibss, 10576 .policy = nl80211_policy, 10577 .flags = GENL_ADMIN_PERM, 10578 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10579 NL80211_FLAG_NEED_RTNL, 10580 }, 10581 #ifdef CONFIG_NL80211_TESTMODE 10582 { 10583 .cmd = NL80211_CMD_TESTMODE, 10584 .doit = nl80211_testmode_do, 10585 .dumpit = nl80211_testmode_dump, 10586 .policy = nl80211_policy, 10587 .flags = GENL_ADMIN_PERM, 10588 .internal_flags = NL80211_FLAG_NEED_WIPHY | 10589 NL80211_FLAG_NEED_RTNL, 10590 }, 10591 #endif 10592 { 10593 .cmd = NL80211_CMD_CONNECT, 10594 .doit = nl80211_connect, 10595 .policy = nl80211_policy, 10596 .flags = GENL_ADMIN_PERM, 10597 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10598 NL80211_FLAG_NEED_RTNL, 10599 }, 10600 { 10601 .cmd = NL80211_CMD_DISCONNECT, 10602 .doit = nl80211_disconnect, 10603 .policy = nl80211_policy, 10604 .flags = GENL_ADMIN_PERM, 10605 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10606 NL80211_FLAG_NEED_RTNL, 10607 }, 10608 { 10609 .cmd = NL80211_CMD_SET_WIPHY_NETNS, 10610 .doit = nl80211_wiphy_netns, 10611 .policy = nl80211_policy, 10612 .flags = GENL_ADMIN_PERM, 10613 .internal_flags = NL80211_FLAG_NEED_WIPHY | 10614 NL80211_FLAG_NEED_RTNL, 10615 }, 10616 { 10617 .cmd = NL80211_CMD_GET_SURVEY, 10618 .policy = nl80211_policy, 10619 .dumpit = nl80211_dump_survey, 10620 }, 10621 { 10622 .cmd = NL80211_CMD_SET_PMKSA, 10623 .doit = nl80211_setdel_pmksa, 10624 .policy = nl80211_policy, 10625 .flags = GENL_ADMIN_PERM, 10626 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10627 NL80211_FLAG_NEED_RTNL, 10628 }, 10629 { 10630 .cmd = NL80211_CMD_DEL_PMKSA, 10631 .doit = nl80211_setdel_pmksa, 10632 .policy = nl80211_policy, 10633 .flags = GENL_ADMIN_PERM, 10634 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10635 NL80211_FLAG_NEED_RTNL, 10636 }, 10637 { 10638 .cmd = NL80211_CMD_FLUSH_PMKSA, 10639 .doit = nl80211_flush_pmksa, 10640 .policy = nl80211_policy, 10641 .flags = GENL_ADMIN_PERM, 10642 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10643 NL80211_FLAG_NEED_RTNL, 10644 }, 10645 { 10646 .cmd = NL80211_CMD_REMAIN_ON_CHANNEL, 10647 .doit = nl80211_remain_on_channel, 10648 .policy = nl80211_policy, 10649 .flags = GENL_ADMIN_PERM, 10650 .internal_flags = NL80211_FLAG_NEED_WDEV_UP | 10651 NL80211_FLAG_NEED_RTNL, 10652 }, 10653 { 10654 .cmd = NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL, 10655 .doit = nl80211_cancel_remain_on_channel, 10656 .policy = nl80211_policy, 10657 .flags = GENL_ADMIN_PERM, 10658 .internal_flags = NL80211_FLAG_NEED_WDEV_UP | 10659 NL80211_FLAG_NEED_RTNL, 10660 }, 10661 { 10662 .cmd = NL80211_CMD_SET_TX_BITRATE_MASK, 10663 .doit = nl80211_set_tx_bitrate_mask, 10664 .policy = nl80211_policy, 10665 .flags = GENL_ADMIN_PERM, 10666 .internal_flags = NL80211_FLAG_NEED_NETDEV | 10667 NL80211_FLAG_NEED_RTNL, 10668 }, 10669 { 10670 .cmd = NL80211_CMD_REGISTER_FRAME, 10671 .doit = nl80211_register_mgmt, 10672 .policy = nl80211_policy, 10673 .flags = GENL_ADMIN_PERM, 10674 .internal_flags = NL80211_FLAG_NEED_WDEV | 10675 NL80211_FLAG_NEED_RTNL, 10676 }, 10677 { 10678 .cmd = NL80211_CMD_FRAME, 10679 .doit = nl80211_tx_mgmt, 10680 .policy = nl80211_policy, 10681 .flags = GENL_ADMIN_PERM, 10682 .internal_flags = NL80211_FLAG_NEED_WDEV_UP | 10683 NL80211_FLAG_NEED_RTNL, 10684 }, 10685 { 10686 .cmd = NL80211_CMD_FRAME_WAIT_CANCEL, 10687 .doit = nl80211_tx_mgmt_cancel_wait, 10688 .policy = nl80211_policy, 10689 .flags = GENL_ADMIN_PERM, 10690 .internal_flags = NL80211_FLAG_NEED_WDEV_UP | 10691 NL80211_FLAG_NEED_RTNL, 10692 }, 10693 { 10694 .cmd = NL80211_CMD_SET_POWER_SAVE, 10695 .doit = nl80211_set_power_save, 10696 .policy = nl80211_policy, 10697 .flags = GENL_ADMIN_PERM, 10698 .internal_flags = NL80211_FLAG_NEED_NETDEV | 10699 NL80211_FLAG_NEED_RTNL, 10700 }, 10701 { 10702 .cmd = NL80211_CMD_GET_POWER_SAVE, 10703 .doit = nl80211_get_power_save, 10704 .policy = nl80211_policy, 10705 /* can be retrieved by unprivileged users */ 10706 .internal_flags = NL80211_FLAG_NEED_NETDEV | 10707 NL80211_FLAG_NEED_RTNL, 10708 }, 10709 { 10710 .cmd = NL80211_CMD_SET_CQM, 10711 .doit = nl80211_set_cqm, 10712 .policy = nl80211_policy, 10713 .flags = GENL_ADMIN_PERM, 10714 .internal_flags = NL80211_FLAG_NEED_NETDEV | 10715 NL80211_FLAG_NEED_RTNL, 10716 }, 10717 { 10718 .cmd = NL80211_CMD_SET_CHANNEL, 10719 .doit = nl80211_set_channel, 10720 .policy = nl80211_policy, 10721 .flags = GENL_ADMIN_PERM, 10722 .internal_flags = NL80211_FLAG_NEED_NETDEV | 10723 NL80211_FLAG_NEED_RTNL, 10724 }, 10725 { 10726 .cmd = NL80211_CMD_SET_WDS_PEER, 10727 .doit = nl80211_set_wds_peer, 10728 .policy = nl80211_policy, 10729 .flags = GENL_ADMIN_PERM, 10730 .internal_flags = NL80211_FLAG_NEED_NETDEV | 10731 NL80211_FLAG_NEED_RTNL, 10732 }, 10733 { 10734 .cmd = NL80211_CMD_JOIN_MESH, 10735 .doit = nl80211_join_mesh, 10736 .policy = nl80211_policy, 10737 .flags = GENL_ADMIN_PERM, 10738 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10739 NL80211_FLAG_NEED_RTNL, 10740 }, 10741 { 10742 .cmd = NL80211_CMD_LEAVE_MESH, 10743 .doit = nl80211_leave_mesh, 10744 .policy = nl80211_policy, 10745 .flags = GENL_ADMIN_PERM, 10746 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10747 NL80211_FLAG_NEED_RTNL, 10748 }, 10749 { 10750 .cmd = NL80211_CMD_JOIN_OCB, 10751 .doit = nl80211_join_ocb, 10752 .policy = nl80211_policy, 10753 .flags = GENL_ADMIN_PERM, 10754 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10755 NL80211_FLAG_NEED_RTNL, 10756 }, 10757 { 10758 .cmd = NL80211_CMD_LEAVE_OCB, 10759 .doit = nl80211_leave_ocb, 10760 .policy = nl80211_policy, 10761 .flags = GENL_ADMIN_PERM, 10762 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10763 NL80211_FLAG_NEED_RTNL, 10764 }, 10765 #ifdef CONFIG_PM 10766 { 10767 .cmd = NL80211_CMD_GET_WOWLAN, 10768 .doit = nl80211_get_wowlan, 10769 .policy = nl80211_policy, 10770 /* can be retrieved by unprivileged users */ 10771 .internal_flags = NL80211_FLAG_NEED_WIPHY | 10772 NL80211_FLAG_NEED_RTNL, 10773 }, 10774 { 10775 .cmd = NL80211_CMD_SET_WOWLAN, 10776 .doit = nl80211_set_wowlan, 10777 .policy = nl80211_policy, 10778 .flags = GENL_ADMIN_PERM, 10779 .internal_flags = NL80211_FLAG_NEED_WIPHY | 10780 NL80211_FLAG_NEED_RTNL, 10781 }, 10782 #endif 10783 { 10784 .cmd = NL80211_CMD_SET_REKEY_OFFLOAD, 10785 .doit = nl80211_set_rekey_data, 10786 .policy = nl80211_policy, 10787 .flags = GENL_ADMIN_PERM, 10788 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10789 NL80211_FLAG_NEED_RTNL | 10790 NL80211_FLAG_CLEAR_SKB, 10791 }, 10792 { 10793 .cmd = NL80211_CMD_TDLS_MGMT, 10794 .doit = nl80211_tdls_mgmt, 10795 .policy = nl80211_policy, 10796 .flags = GENL_ADMIN_PERM, 10797 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10798 NL80211_FLAG_NEED_RTNL, 10799 }, 10800 { 10801 .cmd = NL80211_CMD_TDLS_OPER, 10802 .doit = nl80211_tdls_oper, 10803 .policy = nl80211_policy, 10804 .flags = GENL_ADMIN_PERM, 10805 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10806 NL80211_FLAG_NEED_RTNL, 10807 }, 10808 { 10809 .cmd = NL80211_CMD_UNEXPECTED_FRAME, 10810 .doit = nl80211_register_unexpected_frame, 10811 .policy = nl80211_policy, 10812 .flags = GENL_ADMIN_PERM, 10813 .internal_flags = NL80211_FLAG_NEED_NETDEV | 10814 NL80211_FLAG_NEED_RTNL, 10815 }, 10816 { 10817 .cmd = NL80211_CMD_PROBE_CLIENT, 10818 .doit = nl80211_probe_client, 10819 .policy = nl80211_policy, 10820 .flags = GENL_ADMIN_PERM, 10821 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10822 NL80211_FLAG_NEED_RTNL, 10823 }, 10824 { 10825 .cmd = NL80211_CMD_REGISTER_BEACONS, 10826 .doit = nl80211_register_beacons, 10827 .policy = nl80211_policy, 10828 .flags = GENL_ADMIN_PERM, 10829 .internal_flags = NL80211_FLAG_NEED_WIPHY | 10830 NL80211_FLAG_NEED_RTNL, 10831 }, 10832 { 10833 .cmd = NL80211_CMD_SET_NOACK_MAP, 10834 .doit = nl80211_set_noack_map, 10835 .policy = nl80211_policy, 10836 .flags = GENL_ADMIN_PERM, 10837 .internal_flags = NL80211_FLAG_NEED_NETDEV | 10838 NL80211_FLAG_NEED_RTNL, 10839 }, 10840 { 10841 .cmd = NL80211_CMD_START_P2P_DEVICE, 10842 .doit = nl80211_start_p2p_device, 10843 .policy = nl80211_policy, 10844 .flags = GENL_ADMIN_PERM, 10845 .internal_flags = NL80211_FLAG_NEED_WDEV | 10846 NL80211_FLAG_NEED_RTNL, 10847 }, 10848 { 10849 .cmd = NL80211_CMD_STOP_P2P_DEVICE, 10850 .doit = nl80211_stop_p2p_device, 10851 .policy = nl80211_policy, 10852 .flags = GENL_ADMIN_PERM, 10853 .internal_flags = NL80211_FLAG_NEED_WDEV_UP | 10854 NL80211_FLAG_NEED_RTNL, 10855 }, 10856 { 10857 .cmd = NL80211_CMD_SET_MCAST_RATE, 10858 .doit = nl80211_set_mcast_rate, 10859 .policy = nl80211_policy, 10860 .flags = GENL_ADMIN_PERM, 10861 .internal_flags = NL80211_FLAG_NEED_NETDEV | 10862 NL80211_FLAG_NEED_RTNL, 10863 }, 10864 { 10865 .cmd = NL80211_CMD_SET_MAC_ACL, 10866 .doit = nl80211_set_mac_acl, 10867 .policy = nl80211_policy, 10868 .flags = GENL_ADMIN_PERM, 10869 .internal_flags = NL80211_FLAG_NEED_NETDEV | 10870 NL80211_FLAG_NEED_RTNL, 10871 }, 10872 { 10873 .cmd = NL80211_CMD_RADAR_DETECT, 10874 .doit = nl80211_start_radar_detection, 10875 .policy = nl80211_policy, 10876 .flags = GENL_ADMIN_PERM, 10877 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10878 NL80211_FLAG_NEED_RTNL, 10879 }, 10880 { 10881 .cmd = NL80211_CMD_GET_PROTOCOL_FEATURES, 10882 .doit = nl80211_get_protocol_features, 10883 .policy = nl80211_policy, 10884 }, 10885 { 10886 .cmd = NL80211_CMD_UPDATE_FT_IES, 10887 .doit = nl80211_update_ft_ies, 10888 .policy = nl80211_policy, 10889 .flags = GENL_ADMIN_PERM, 10890 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10891 NL80211_FLAG_NEED_RTNL, 10892 }, 10893 { 10894 .cmd = NL80211_CMD_CRIT_PROTOCOL_START, 10895 .doit = nl80211_crit_protocol_start, 10896 .policy = nl80211_policy, 10897 .flags = GENL_ADMIN_PERM, 10898 .internal_flags = NL80211_FLAG_NEED_WDEV_UP | 10899 NL80211_FLAG_NEED_RTNL, 10900 }, 10901 { 10902 .cmd = NL80211_CMD_CRIT_PROTOCOL_STOP, 10903 .doit = nl80211_crit_protocol_stop, 10904 .policy = nl80211_policy, 10905 .flags = GENL_ADMIN_PERM, 10906 .internal_flags = NL80211_FLAG_NEED_WDEV_UP | 10907 NL80211_FLAG_NEED_RTNL, 10908 }, 10909 { 10910 .cmd = NL80211_CMD_GET_COALESCE, 10911 .doit = nl80211_get_coalesce, 10912 .policy = nl80211_policy, 10913 .internal_flags = NL80211_FLAG_NEED_WIPHY | 10914 NL80211_FLAG_NEED_RTNL, 10915 }, 10916 { 10917 .cmd = NL80211_CMD_SET_COALESCE, 10918 .doit = nl80211_set_coalesce, 10919 .policy = nl80211_policy, 10920 .flags = GENL_ADMIN_PERM, 10921 .internal_flags = NL80211_FLAG_NEED_WIPHY | 10922 NL80211_FLAG_NEED_RTNL, 10923 }, 10924 { 10925 .cmd = NL80211_CMD_CHANNEL_SWITCH, 10926 .doit = nl80211_channel_switch, 10927 .policy = nl80211_policy, 10928 .flags = GENL_ADMIN_PERM, 10929 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10930 NL80211_FLAG_NEED_RTNL, 10931 }, 10932 { 10933 .cmd = NL80211_CMD_VENDOR, 10934 .doit = nl80211_vendor_cmd, 10935 .policy = nl80211_policy, 10936 .flags = GENL_ADMIN_PERM, 10937 .internal_flags = NL80211_FLAG_NEED_WIPHY | 10938 NL80211_FLAG_NEED_RTNL, 10939 }, 10940 { 10941 .cmd = NL80211_CMD_SET_QOS_MAP, 10942 .doit = nl80211_set_qos_map, 10943 .policy = nl80211_policy, 10944 .flags = GENL_ADMIN_PERM, 10945 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10946 NL80211_FLAG_NEED_RTNL, 10947 }, 10948 { 10949 .cmd = NL80211_CMD_ADD_TX_TS, 10950 .doit = nl80211_add_tx_ts, 10951 .policy = nl80211_policy, 10952 .flags = GENL_ADMIN_PERM, 10953 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10954 NL80211_FLAG_NEED_RTNL, 10955 }, 10956 { 10957 .cmd = NL80211_CMD_DEL_TX_TS, 10958 .doit = nl80211_del_tx_ts, 10959 .policy = nl80211_policy, 10960 .flags = GENL_ADMIN_PERM, 10961 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10962 NL80211_FLAG_NEED_RTNL, 10963 }, 10964 { 10965 .cmd = NL80211_CMD_TDLS_CHANNEL_SWITCH, 10966 .doit = nl80211_tdls_channel_switch, 10967 .policy = nl80211_policy, 10968 .flags = GENL_ADMIN_PERM, 10969 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10970 NL80211_FLAG_NEED_RTNL, 10971 }, 10972 { 10973 .cmd = NL80211_CMD_TDLS_CANCEL_CHANNEL_SWITCH, 10974 .doit = nl80211_tdls_cancel_channel_switch, 10975 .policy = nl80211_policy, 10976 .flags = GENL_ADMIN_PERM, 10977 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10978 NL80211_FLAG_NEED_RTNL, 10979 }, 10980 }; 10981 10982 /* notification functions */ 10983 10984 void nl80211_notify_wiphy(struct cfg80211_registered_device *rdev, 10985 enum nl80211_commands cmd) 10986 { 10987 struct sk_buff *msg; 10988 struct nl80211_dump_wiphy_state state = {}; 10989 10990 WARN_ON(cmd != NL80211_CMD_NEW_WIPHY && 10991 cmd != NL80211_CMD_DEL_WIPHY); 10992 10993 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 10994 if (!msg) 10995 return; 10996 10997 if (nl80211_send_wiphy(rdev, cmd, msg, 0, 0, 0, &state) < 0) { 10998 nlmsg_free(msg); 10999 return; 11000 } 11001 11002 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 11003 NL80211_MCGRP_CONFIG, GFP_KERNEL); 11004 } 11005 11006 static int nl80211_add_scan_req(struct sk_buff *msg, 11007 struct cfg80211_registered_device *rdev) 11008 { 11009 struct cfg80211_scan_request *req = rdev->scan_req; 11010 struct nlattr *nest; 11011 int i; 11012 11013 if (WARN_ON(!req)) 11014 return 0; 11015 11016 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_SSIDS); 11017 if (!nest) 11018 goto nla_put_failure; 11019 for (i = 0; i < req->n_ssids; i++) { 11020 if (nla_put(msg, i, req->ssids[i].ssid_len, req->ssids[i].ssid)) 11021 goto nla_put_failure; 11022 } 11023 nla_nest_end(msg, nest); 11024 11025 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES); 11026 if (!nest) 11027 goto nla_put_failure; 11028 for (i = 0; i < req->n_channels; i++) { 11029 if (nla_put_u32(msg, i, req->channels[i]->center_freq)) 11030 goto nla_put_failure; 11031 } 11032 nla_nest_end(msg, nest); 11033 11034 if (req->ie && 11035 nla_put(msg, NL80211_ATTR_IE, req->ie_len, req->ie)) 11036 goto nla_put_failure; 11037 11038 if (req->flags && 11039 nla_put_u32(msg, NL80211_ATTR_SCAN_FLAGS, req->flags)) 11040 goto nla_put_failure; 11041 11042 return 0; 11043 nla_put_failure: 11044 return -ENOBUFS; 11045 } 11046 11047 static int nl80211_send_scan_msg(struct sk_buff *msg, 11048 struct cfg80211_registered_device *rdev, 11049 struct wireless_dev *wdev, 11050 u32 portid, u32 seq, int flags, 11051 u32 cmd) 11052 { 11053 void *hdr; 11054 11055 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd); 11056 if (!hdr) 11057 return -1; 11058 11059 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 11060 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX, 11061 wdev->netdev->ifindex)) || 11062 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev))) 11063 goto nla_put_failure; 11064 11065 /* ignore errors and send incomplete event anyway */ 11066 nl80211_add_scan_req(msg, rdev); 11067 11068 genlmsg_end(msg, hdr); 11069 return 0; 11070 11071 nla_put_failure: 11072 genlmsg_cancel(msg, hdr); 11073 return -EMSGSIZE; 11074 } 11075 11076 static int 11077 nl80211_send_sched_scan_msg(struct sk_buff *msg, 11078 struct cfg80211_registered_device *rdev, 11079 struct net_device *netdev, 11080 u32 portid, u32 seq, int flags, u32 cmd) 11081 { 11082 void *hdr; 11083 11084 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd); 11085 if (!hdr) 11086 return -1; 11087 11088 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 11089 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex)) 11090 goto nla_put_failure; 11091 11092 genlmsg_end(msg, hdr); 11093 return 0; 11094 11095 nla_put_failure: 11096 genlmsg_cancel(msg, hdr); 11097 return -EMSGSIZE; 11098 } 11099 11100 void nl80211_send_scan_start(struct cfg80211_registered_device *rdev, 11101 struct wireless_dev *wdev) 11102 { 11103 struct sk_buff *msg; 11104 11105 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 11106 if (!msg) 11107 return; 11108 11109 if (nl80211_send_scan_msg(msg, rdev, wdev, 0, 0, 0, 11110 NL80211_CMD_TRIGGER_SCAN) < 0) { 11111 nlmsg_free(msg); 11112 return; 11113 } 11114 11115 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 11116 NL80211_MCGRP_SCAN, GFP_KERNEL); 11117 } 11118 11119 struct sk_buff *nl80211_build_scan_msg(struct cfg80211_registered_device *rdev, 11120 struct wireless_dev *wdev, bool aborted) 11121 { 11122 struct sk_buff *msg; 11123 11124 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 11125 if (!msg) 11126 return NULL; 11127 11128 if (nl80211_send_scan_msg(msg, rdev, wdev, 0, 0, 0, 11129 aborted ? NL80211_CMD_SCAN_ABORTED : 11130 NL80211_CMD_NEW_SCAN_RESULTS) < 0) { 11131 nlmsg_free(msg); 11132 return NULL; 11133 } 11134 11135 return msg; 11136 } 11137 11138 void nl80211_send_scan_result(struct cfg80211_registered_device *rdev, 11139 struct sk_buff *msg) 11140 { 11141 if (!msg) 11142 return; 11143 11144 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 11145 NL80211_MCGRP_SCAN, GFP_KERNEL); 11146 } 11147 11148 void nl80211_send_sched_scan_results(struct cfg80211_registered_device *rdev, 11149 struct net_device *netdev) 11150 { 11151 struct sk_buff *msg; 11152 11153 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 11154 if (!msg) 11155 return; 11156 11157 if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0, 11158 NL80211_CMD_SCHED_SCAN_RESULTS) < 0) { 11159 nlmsg_free(msg); 11160 return; 11161 } 11162 11163 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 11164 NL80211_MCGRP_SCAN, GFP_KERNEL); 11165 } 11166 11167 void nl80211_send_sched_scan(struct cfg80211_registered_device *rdev, 11168 struct net_device *netdev, u32 cmd) 11169 { 11170 struct sk_buff *msg; 11171 11172 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 11173 if (!msg) 11174 return; 11175 11176 if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0, cmd) < 0) { 11177 nlmsg_free(msg); 11178 return; 11179 } 11180 11181 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 11182 NL80211_MCGRP_SCAN, GFP_KERNEL); 11183 } 11184 11185 static bool nl80211_reg_change_event_fill(struct sk_buff *msg, 11186 struct regulatory_request *request) 11187 { 11188 /* Userspace can always count this one always being set */ 11189 if (nla_put_u8(msg, NL80211_ATTR_REG_INITIATOR, request->initiator)) 11190 goto nla_put_failure; 11191 11192 if (request->alpha2[0] == '0' && request->alpha2[1] == '0') { 11193 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE, 11194 NL80211_REGDOM_TYPE_WORLD)) 11195 goto nla_put_failure; 11196 } else if (request->alpha2[0] == '9' && request->alpha2[1] == '9') { 11197 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE, 11198 NL80211_REGDOM_TYPE_CUSTOM_WORLD)) 11199 goto nla_put_failure; 11200 } else if ((request->alpha2[0] == '9' && request->alpha2[1] == '8') || 11201 request->intersect) { 11202 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE, 11203 NL80211_REGDOM_TYPE_INTERSECTION)) 11204 goto nla_put_failure; 11205 } else { 11206 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE, 11207 NL80211_REGDOM_TYPE_COUNTRY) || 11208 nla_put_string(msg, NL80211_ATTR_REG_ALPHA2, 11209 request->alpha2)) 11210 goto nla_put_failure; 11211 } 11212 11213 if (request->wiphy_idx != WIPHY_IDX_INVALID) { 11214 struct wiphy *wiphy = wiphy_idx_to_wiphy(request->wiphy_idx); 11215 11216 if (wiphy && 11217 nla_put_u32(msg, NL80211_ATTR_WIPHY, request->wiphy_idx)) 11218 goto nla_put_failure; 11219 11220 if (wiphy && 11221 wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED && 11222 nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG)) 11223 goto nla_put_failure; 11224 } 11225 11226 return true; 11227 11228 nla_put_failure: 11229 return false; 11230 } 11231 11232 /* 11233 * This can happen on global regulatory changes or device specific settings 11234 * based on custom regulatory domains. 11235 */ 11236 void nl80211_common_reg_change_event(enum nl80211_commands cmd_id, 11237 struct regulatory_request *request) 11238 { 11239 struct sk_buff *msg; 11240 void *hdr; 11241 11242 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 11243 if (!msg) 11244 return; 11245 11246 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd_id); 11247 if (!hdr) { 11248 nlmsg_free(msg); 11249 return; 11250 } 11251 11252 if (nl80211_reg_change_event_fill(msg, request) == false) 11253 goto nla_put_failure; 11254 11255 genlmsg_end(msg, hdr); 11256 11257 rcu_read_lock(); 11258 genlmsg_multicast_allns(&nl80211_fam, msg, 0, 11259 NL80211_MCGRP_REGULATORY, GFP_ATOMIC); 11260 rcu_read_unlock(); 11261 11262 return; 11263 11264 nla_put_failure: 11265 genlmsg_cancel(msg, hdr); 11266 nlmsg_free(msg); 11267 } 11268 11269 static void nl80211_send_mlme_event(struct cfg80211_registered_device *rdev, 11270 struct net_device *netdev, 11271 const u8 *buf, size_t len, 11272 enum nl80211_commands cmd, gfp_t gfp, 11273 int uapsd_queues) 11274 { 11275 struct sk_buff *msg; 11276 void *hdr; 11277 11278 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 11279 if (!msg) 11280 return; 11281 11282 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd); 11283 if (!hdr) { 11284 nlmsg_free(msg); 11285 return; 11286 } 11287 11288 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 11289 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) || 11290 nla_put(msg, NL80211_ATTR_FRAME, len, buf)) 11291 goto nla_put_failure; 11292 11293 if (uapsd_queues >= 0) { 11294 struct nlattr *nla_wmm = 11295 nla_nest_start(msg, NL80211_ATTR_STA_WME); 11296 if (!nla_wmm) 11297 goto nla_put_failure; 11298 11299 if (nla_put_u8(msg, NL80211_STA_WME_UAPSD_QUEUES, 11300 uapsd_queues)) 11301 goto nla_put_failure; 11302 11303 nla_nest_end(msg, nla_wmm); 11304 } 11305 11306 genlmsg_end(msg, hdr); 11307 11308 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 11309 NL80211_MCGRP_MLME, gfp); 11310 return; 11311 11312 nla_put_failure: 11313 genlmsg_cancel(msg, hdr); 11314 nlmsg_free(msg); 11315 } 11316 11317 void nl80211_send_rx_auth(struct cfg80211_registered_device *rdev, 11318 struct net_device *netdev, const u8 *buf, 11319 size_t len, gfp_t gfp) 11320 { 11321 nl80211_send_mlme_event(rdev, netdev, buf, len, 11322 NL80211_CMD_AUTHENTICATE, gfp, -1); 11323 } 11324 11325 void nl80211_send_rx_assoc(struct cfg80211_registered_device *rdev, 11326 struct net_device *netdev, const u8 *buf, 11327 size_t len, gfp_t gfp, int uapsd_queues) 11328 { 11329 nl80211_send_mlme_event(rdev, netdev, buf, len, 11330 NL80211_CMD_ASSOCIATE, gfp, uapsd_queues); 11331 } 11332 11333 void nl80211_send_deauth(struct cfg80211_registered_device *rdev, 11334 struct net_device *netdev, const u8 *buf, 11335 size_t len, gfp_t gfp) 11336 { 11337 nl80211_send_mlme_event(rdev, netdev, buf, len, 11338 NL80211_CMD_DEAUTHENTICATE, gfp, -1); 11339 } 11340 11341 void nl80211_send_disassoc(struct cfg80211_registered_device *rdev, 11342 struct net_device *netdev, const u8 *buf, 11343 size_t len, gfp_t gfp) 11344 { 11345 nl80211_send_mlme_event(rdev, netdev, buf, len, 11346 NL80211_CMD_DISASSOCIATE, gfp, -1); 11347 } 11348 11349 void cfg80211_rx_unprot_mlme_mgmt(struct net_device *dev, const u8 *buf, 11350 size_t len) 11351 { 11352 struct wireless_dev *wdev = dev->ieee80211_ptr; 11353 struct wiphy *wiphy = wdev->wiphy; 11354 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 11355 const struct ieee80211_mgmt *mgmt = (void *)buf; 11356 u32 cmd; 11357 11358 if (WARN_ON(len < 2)) 11359 return; 11360 11361 if (ieee80211_is_deauth(mgmt->frame_control)) 11362 cmd = NL80211_CMD_UNPROT_DEAUTHENTICATE; 11363 else 11364 cmd = NL80211_CMD_UNPROT_DISASSOCIATE; 11365 11366 trace_cfg80211_rx_unprot_mlme_mgmt(dev, buf, len); 11367 nl80211_send_mlme_event(rdev, dev, buf, len, cmd, GFP_ATOMIC, -1); 11368 } 11369 EXPORT_SYMBOL(cfg80211_rx_unprot_mlme_mgmt); 11370 11371 static void nl80211_send_mlme_timeout(struct cfg80211_registered_device *rdev, 11372 struct net_device *netdev, int cmd, 11373 const u8 *addr, gfp_t gfp) 11374 { 11375 struct sk_buff *msg; 11376 void *hdr; 11377 11378 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 11379 if (!msg) 11380 return; 11381 11382 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd); 11383 if (!hdr) { 11384 nlmsg_free(msg); 11385 return; 11386 } 11387 11388 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 11389 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) || 11390 nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) || 11391 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) 11392 goto nla_put_failure; 11393 11394 genlmsg_end(msg, hdr); 11395 11396 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 11397 NL80211_MCGRP_MLME, gfp); 11398 return; 11399 11400 nla_put_failure: 11401 genlmsg_cancel(msg, hdr); 11402 nlmsg_free(msg); 11403 } 11404 11405 void nl80211_send_auth_timeout(struct cfg80211_registered_device *rdev, 11406 struct net_device *netdev, const u8 *addr, 11407 gfp_t gfp) 11408 { 11409 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_AUTHENTICATE, 11410 addr, gfp); 11411 } 11412 11413 void nl80211_send_assoc_timeout(struct cfg80211_registered_device *rdev, 11414 struct net_device *netdev, const u8 *addr, 11415 gfp_t gfp) 11416 { 11417 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_ASSOCIATE, 11418 addr, gfp); 11419 } 11420 11421 void nl80211_send_connect_result(struct cfg80211_registered_device *rdev, 11422 struct net_device *netdev, const u8 *bssid, 11423 const u8 *req_ie, size_t req_ie_len, 11424 const u8 *resp_ie, size_t resp_ie_len, 11425 u16 status, gfp_t gfp) 11426 { 11427 struct sk_buff *msg; 11428 void *hdr; 11429 11430 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 11431 if (!msg) 11432 return; 11433 11434 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONNECT); 11435 if (!hdr) { 11436 nlmsg_free(msg); 11437 return; 11438 } 11439 11440 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 11441 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) || 11442 (bssid && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid)) || 11443 nla_put_u16(msg, NL80211_ATTR_STATUS_CODE, status) || 11444 (req_ie && 11445 nla_put(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie)) || 11446 (resp_ie && 11447 nla_put(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie))) 11448 goto nla_put_failure; 11449 11450 genlmsg_end(msg, hdr); 11451 11452 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 11453 NL80211_MCGRP_MLME, gfp); 11454 return; 11455 11456 nla_put_failure: 11457 genlmsg_cancel(msg, hdr); 11458 nlmsg_free(msg); 11459 11460 } 11461 11462 void nl80211_send_roamed(struct cfg80211_registered_device *rdev, 11463 struct net_device *netdev, const u8 *bssid, 11464 const u8 *req_ie, size_t req_ie_len, 11465 const u8 *resp_ie, size_t resp_ie_len, gfp_t gfp) 11466 { 11467 struct sk_buff *msg; 11468 void *hdr; 11469 11470 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 11471 if (!msg) 11472 return; 11473 11474 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ROAM); 11475 if (!hdr) { 11476 nlmsg_free(msg); 11477 return; 11478 } 11479 11480 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 11481 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) || 11482 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid) || 11483 (req_ie && 11484 nla_put(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie)) || 11485 (resp_ie && 11486 nla_put(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie))) 11487 goto nla_put_failure; 11488 11489 genlmsg_end(msg, hdr); 11490 11491 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 11492 NL80211_MCGRP_MLME, gfp); 11493 return; 11494 11495 nla_put_failure: 11496 genlmsg_cancel(msg, hdr); 11497 nlmsg_free(msg); 11498 11499 } 11500 11501 void nl80211_send_disconnected(struct cfg80211_registered_device *rdev, 11502 struct net_device *netdev, u16 reason, 11503 const u8 *ie, size_t ie_len, bool from_ap) 11504 { 11505 struct sk_buff *msg; 11506 void *hdr; 11507 11508 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 11509 if (!msg) 11510 return; 11511 11512 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DISCONNECT); 11513 if (!hdr) { 11514 nlmsg_free(msg); 11515 return; 11516 } 11517 11518 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 11519 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) || 11520 (from_ap && reason && 11521 nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason)) || 11522 (from_ap && 11523 nla_put_flag(msg, NL80211_ATTR_DISCONNECTED_BY_AP)) || 11524 (ie && nla_put(msg, NL80211_ATTR_IE, ie_len, ie))) 11525 goto nla_put_failure; 11526 11527 genlmsg_end(msg, hdr); 11528 11529 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 11530 NL80211_MCGRP_MLME, GFP_KERNEL); 11531 return; 11532 11533 nla_put_failure: 11534 genlmsg_cancel(msg, hdr); 11535 nlmsg_free(msg); 11536 11537 } 11538 11539 void nl80211_send_ibss_bssid(struct cfg80211_registered_device *rdev, 11540 struct net_device *netdev, const u8 *bssid, 11541 gfp_t gfp) 11542 { 11543 struct sk_buff *msg; 11544 void *hdr; 11545 11546 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 11547 if (!msg) 11548 return; 11549 11550 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_JOIN_IBSS); 11551 if (!hdr) { 11552 nlmsg_free(msg); 11553 return; 11554 } 11555 11556 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 11557 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) || 11558 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid)) 11559 goto nla_put_failure; 11560 11561 genlmsg_end(msg, hdr); 11562 11563 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 11564 NL80211_MCGRP_MLME, gfp); 11565 return; 11566 11567 nla_put_failure: 11568 genlmsg_cancel(msg, hdr); 11569 nlmsg_free(msg); 11570 } 11571 11572 void cfg80211_notify_new_peer_candidate(struct net_device *dev, const u8 *addr, 11573 const u8* ie, u8 ie_len, gfp_t gfp) 11574 { 11575 struct wireless_dev *wdev = dev->ieee80211_ptr; 11576 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 11577 struct sk_buff *msg; 11578 void *hdr; 11579 11580 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_MESH_POINT)) 11581 return; 11582 11583 trace_cfg80211_notify_new_peer_candidate(dev, addr); 11584 11585 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 11586 if (!msg) 11587 return; 11588 11589 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NEW_PEER_CANDIDATE); 11590 if (!hdr) { 11591 nlmsg_free(msg); 11592 return; 11593 } 11594 11595 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 11596 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) || 11597 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) || 11598 (ie_len && ie && 11599 nla_put(msg, NL80211_ATTR_IE, ie_len , ie))) 11600 goto nla_put_failure; 11601 11602 genlmsg_end(msg, hdr); 11603 11604 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 11605 NL80211_MCGRP_MLME, gfp); 11606 return; 11607 11608 nla_put_failure: 11609 genlmsg_cancel(msg, hdr); 11610 nlmsg_free(msg); 11611 } 11612 EXPORT_SYMBOL(cfg80211_notify_new_peer_candidate); 11613 11614 void nl80211_michael_mic_failure(struct cfg80211_registered_device *rdev, 11615 struct net_device *netdev, const u8 *addr, 11616 enum nl80211_key_type key_type, int key_id, 11617 const u8 *tsc, gfp_t gfp) 11618 { 11619 struct sk_buff *msg; 11620 void *hdr; 11621 11622 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 11623 if (!msg) 11624 return; 11625 11626 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_MICHAEL_MIC_FAILURE); 11627 if (!hdr) { 11628 nlmsg_free(msg); 11629 return; 11630 } 11631 11632 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 11633 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) || 11634 (addr && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) || 11635 nla_put_u32(msg, NL80211_ATTR_KEY_TYPE, key_type) || 11636 (key_id != -1 && 11637 nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_id)) || 11638 (tsc && nla_put(msg, NL80211_ATTR_KEY_SEQ, 6, tsc))) 11639 goto nla_put_failure; 11640 11641 genlmsg_end(msg, hdr); 11642 11643 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 11644 NL80211_MCGRP_MLME, gfp); 11645 return; 11646 11647 nla_put_failure: 11648 genlmsg_cancel(msg, hdr); 11649 nlmsg_free(msg); 11650 } 11651 11652 void nl80211_send_beacon_hint_event(struct wiphy *wiphy, 11653 struct ieee80211_channel *channel_before, 11654 struct ieee80211_channel *channel_after) 11655 { 11656 struct sk_buff *msg; 11657 void *hdr; 11658 struct nlattr *nl_freq; 11659 11660 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC); 11661 if (!msg) 11662 return; 11663 11664 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_BEACON_HINT); 11665 if (!hdr) { 11666 nlmsg_free(msg); 11667 return; 11668 } 11669 11670 /* 11671 * Since we are applying the beacon hint to a wiphy we know its 11672 * wiphy_idx is valid 11673 */ 11674 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy))) 11675 goto nla_put_failure; 11676 11677 /* Before */ 11678 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_BEFORE); 11679 if (!nl_freq) 11680 goto nla_put_failure; 11681 if (nl80211_msg_put_channel(msg, channel_before, false)) 11682 goto nla_put_failure; 11683 nla_nest_end(msg, nl_freq); 11684 11685 /* After */ 11686 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_AFTER); 11687 if (!nl_freq) 11688 goto nla_put_failure; 11689 if (nl80211_msg_put_channel(msg, channel_after, false)) 11690 goto nla_put_failure; 11691 nla_nest_end(msg, nl_freq); 11692 11693 genlmsg_end(msg, hdr); 11694 11695 rcu_read_lock(); 11696 genlmsg_multicast_allns(&nl80211_fam, msg, 0, 11697 NL80211_MCGRP_REGULATORY, GFP_ATOMIC); 11698 rcu_read_unlock(); 11699 11700 return; 11701 11702 nla_put_failure: 11703 genlmsg_cancel(msg, hdr); 11704 nlmsg_free(msg); 11705 } 11706 11707 static void nl80211_send_remain_on_chan_event( 11708 int cmd, struct cfg80211_registered_device *rdev, 11709 struct wireless_dev *wdev, u64 cookie, 11710 struct ieee80211_channel *chan, 11711 unsigned int duration, gfp_t gfp) 11712 { 11713 struct sk_buff *msg; 11714 void *hdr; 11715 11716 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 11717 if (!msg) 11718 return; 11719 11720 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd); 11721 if (!hdr) { 11722 nlmsg_free(msg); 11723 return; 11724 } 11725 11726 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 11727 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX, 11728 wdev->netdev->ifindex)) || 11729 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) || 11730 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, chan->center_freq) || 11731 nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE, 11732 NL80211_CHAN_NO_HT) || 11733 nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie)) 11734 goto nla_put_failure; 11735 11736 if (cmd == NL80211_CMD_REMAIN_ON_CHANNEL && 11737 nla_put_u32(msg, NL80211_ATTR_DURATION, duration)) 11738 goto nla_put_failure; 11739 11740 genlmsg_end(msg, hdr); 11741 11742 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 11743 NL80211_MCGRP_MLME, gfp); 11744 return; 11745 11746 nla_put_failure: 11747 genlmsg_cancel(msg, hdr); 11748 nlmsg_free(msg); 11749 } 11750 11751 void cfg80211_ready_on_channel(struct wireless_dev *wdev, u64 cookie, 11752 struct ieee80211_channel *chan, 11753 unsigned int duration, gfp_t gfp) 11754 { 11755 struct wiphy *wiphy = wdev->wiphy; 11756 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 11757 11758 trace_cfg80211_ready_on_channel(wdev, cookie, chan, duration); 11759 nl80211_send_remain_on_chan_event(NL80211_CMD_REMAIN_ON_CHANNEL, 11760 rdev, wdev, cookie, chan, 11761 duration, gfp); 11762 } 11763 EXPORT_SYMBOL(cfg80211_ready_on_channel); 11764 11765 void cfg80211_remain_on_channel_expired(struct wireless_dev *wdev, u64 cookie, 11766 struct ieee80211_channel *chan, 11767 gfp_t gfp) 11768 { 11769 struct wiphy *wiphy = wdev->wiphy; 11770 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 11771 11772 trace_cfg80211_ready_on_channel_expired(wdev, cookie, chan); 11773 nl80211_send_remain_on_chan_event(NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL, 11774 rdev, wdev, cookie, chan, 0, gfp); 11775 } 11776 EXPORT_SYMBOL(cfg80211_remain_on_channel_expired); 11777 11778 void cfg80211_new_sta(struct net_device *dev, const u8 *mac_addr, 11779 struct station_info *sinfo, gfp_t gfp) 11780 { 11781 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy; 11782 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 11783 struct sk_buff *msg; 11784 11785 trace_cfg80211_new_sta(dev, mac_addr, sinfo); 11786 11787 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 11788 if (!msg) 11789 return; 11790 11791 if (nl80211_send_station(msg, NL80211_CMD_NEW_STATION, 0, 0, 0, 11792 rdev, dev, mac_addr, sinfo) < 0) { 11793 nlmsg_free(msg); 11794 return; 11795 } 11796 11797 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 11798 NL80211_MCGRP_MLME, gfp); 11799 } 11800 EXPORT_SYMBOL(cfg80211_new_sta); 11801 11802 void cfg80211_del_sta_sinfo(struct net_device *dev, const u8 *mac_addr, 11803 struct station_info *sinfo, gfp_t gfp) 11804 { 11805 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy; 11806 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 11807 struct sk_buff *msg; 11808 struct station_info empty_sinfo = {}; 11809 11810 if (!sinfo) 11811 sinfo = &empty_sinfo; 11812 11813 trace_cfg80211_del_sta(dev, mac_addr); 11814 11815 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 11816 if (!msg) 11817 return; 11818 11819 if (nl80211_send_station(msg, NL80211_CMD_DEL_STATION, 0, 0, 0, 11820 rdev, dev, mac_addr, sinfo) < 0) { 11821 nlmsg_free(msg); 11822 return; 11823 } 11824 11825 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 11826 NL80211_MCGRP_MLME, gfp); 11827 } 11828 EXPORT_SYMBOL(cfg80211_del_sta_sinfo); 11829 11830 void cfg80211_conn_failed(struct net_device *dev, const u8 *mac_addr, 11831 enum nl80211_connect_failed_reason reason, 11832 gfp_t gfp) 11833 { 11834 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy; 11835 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 11836 struct sk_buff *msg; 11837 void *hdr; 11838 11839 msg = nlmsg_new(NLMSG_GOODSIZE, gfp); 11840 if (!msg) 11841 return; 11842 11843 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONN_FAILED); 11844 if (!hdr) { 11845 nlmsg_free(msg); 11846 return; 11847 } 11848 11849 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) || 11850 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) || 11851 nla_put_u32(msg, NL80211_ATTR_CONN_FAILED_REASON, reason)) 11852 goto nla_put_failure; 11853 11854 genlmsg_end(msg, hdr); 11855 11856 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 11857 NL80211_MCGRP_MLME, gfp); 11858 return; 11859 11860 nla_put_failure: 11861 genlmsg_cancel(msg, hdr); 11862 nlmsg_free(msg); 11863 } 11864 EXPORT_SYMBOL(cfg80211_conn_failed); 11865 11866 static bool __nl80211_unexpected_frame(struct net_device *dev, u8 cmd, 11867 const u8 *addr, gfp_t gfp) 11868 { 11869 struct wireless_dev *wdev = dev->ieee80211_ptr; 11870 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 11871 struct sk_buff *msg; 11872 void *hdr; 11873 u32 nlportid = ACCESS_ONCE(wdev->ap_unexpected_nlportid); 11874 11875 if (!nlportid) 11876 return false; 11877 11878 msg = nlmsg_new(100, gfp); 11879 if (!msg) 11880 return true; 11881 11882 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd); 11883 if (!hdr) { 11884 nlmsg_free(msg); 11885 return true; 11886 } 11887 11888 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 11889 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) || 11890 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) 11891 goto nla_put_failure; 11892 11893 genlmsg_end(msg, hdr); 11894 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid); 11895 return true; 11896 11897 nla_put_failure: 11898 genlmsg_cancel(msg, hdr); 11899 nlmsg_free(msg); 11900 return true; 11901 } 11902 11903 bool cfg80211_rx_spurious_frame(struct net_device *dev, 11904 const u8 *addr, gfp_t gfp) 11905 { 11906 struct wireless_dev *wdev = dev->ieee80211_ptr; 11907 bool ret; 11908 11909 trace_cfg80211_rx_spurious_frame(dev, addr); 11910 11911 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP && 11912 wdev->iftype != NL80211_IFTYPE_P2P_GO)) { 11913 trace_cfg80211_return_bool(false); 11914 return false; 11915 } 11916 ret = __nl80211_unexpected_frame(dev, NL80211_CMD_UNEXPECTED_FRAME, 11917 addr, gfp); 11918 trace_cfg80211_return_bool(ret); 11919 return ret; 11920 } 11921 EXPORT_SYMBOL(cfg80211_rx_spurious_frame); 11922 11923 bool cfg80211_rx_unexpected_4addr_frame(struct net_device *dev, 11924 const u8 *addr, gfp_t gfp) 11925 { 11926 struct wireless_dev *wdev = dev->ieee80211_ptr; 11927 bool ret; 11928 11929 trace_cfg80211_rx_unexpected_4addr_frame(dev, addr); 11930 11931 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP && 11932 wdev->iftype != NL80211_IFTYPE_P2P_GO && 11933 wdev->iftype != NL80211_IFTYPE_AP_VLAN)) { 11934 trace_cfg80211_return_bool(false); 11935 return false; 11936 } 11937 ret = __nl80211_unexpected_frame(dev, 11938 NL80211_CMD_UNEXPECTED_4ADDR_FRAME, 11939 addr, gfp); 11940 trace_cfg80211_return_bool(ret); 11941 return ret; 11942 } 11943 EXPORT_SYMBOL(cfg80211_rx_unexpected_4addr_frame); 11944 11945 int nl80211_send_mgmt(struct cfg80211_registered_device *rdev, 11946 struct wireless_dev *wdev, u32 nlportid, 11947 int freq, int sig_dbm, 11948 const u8 *buf, size_t len, u32 flags, gfp_t gfp) 11949 { 11950 struct net_device *netdev = wdev->netdev; 11951 struct sk_buff *msg; 11952 void *hdr; 11953 11954 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 11955 if (!msg) 11956 return -ENOMEM; 11957 11958 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME); 11959 if (!hdr) { 11960 nlmsg_free(msg); 11961 return -ENOMEM; 11962 } 11963 11964 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 11965 (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX, 11966 netdev->ifindex)) || 11967 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) || 11968 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq) || 11969 (sig_dbm && 11970 nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) || 11971 nla_put(msg, NL80211_ATTR_FRAME, len, buf) || 11972 (flags && 11973 nla_put_u32(msg, NL80211_ATTR_RXMGMT_FLAGS, flags))) 11974 goto nla_put_failure; 11975 11976 genlmsg_end(msg, hdr); 11977 11978 return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid); 11979 11980 nla_put_failure: 11981 genlmsg_cancel(msg, hdr); 11982 nlmsg_free(msg); 11983 return -ENOBUFS; 11984 } 11985 11986 void cfg80211_mgmt_tx_status(struct wireless_dev *wdev, u64 cookie, 11987 const u8 *buf, size_t len, bool ack, gfp_t gfp) 11988 { 11989 struct wiphy *wiphy = wdev->wiphy; 11990 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 11991 struct net_device *netdev = wdev->netdev; 11992 struct sk_buff *msg; 11993 void *hdr; 11994 11995 trace_cfg80211_mgmt_tx_status(wdev, cookie, ack); 11996 11997 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 11998 if (!msg) 11999 return; 12000 12001 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME_TX_STATUS); 12002 if (!hdr) { 12003 nlmsg_free(msg); 12004 return; 12005 } 12006 12007 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 12008 (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX, 12009 netdev->ifindex)) || 12010 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) || 12011 nla_put(msg, NL80211_ATTR_FRAME, len, buf) || 12012 nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie) || 12013 (ack && nla_put_flag(msg, NL80211_ATTR_ACK))) 12014 goto nla_put_failure; 12015 12016 genlmsg_end(msg, hdr); 12017 12018 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 12019 NL80211_MCGRP_MLME, gfp); 12020 return; 12021 12022 nla_put_failure: 12023 genlmsg_cancel(msg, hdr); 12024 nlmsg_free(msg); 12025 } 12026 EXPORT_SYMBOL(cfg80211_mgmt_tx_status); 12027 12028 static struct sk_buff *cfg80211_prepare_cqm(struct net_device *dev, 12029 const char *mac, gfp_t gfp) 12030 { 12031 struct wireless_dev *wdev = dev->ieee80211_ptr; 12032 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 12033 struct sk_buff *msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 12034 void **cb; 12035 12036 if (!msg) 12037 return NULL; 12038 12039 cb = (void **)msg->cb; 12040 12041 cb[0] = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM); 12042 if (!cb[0]) { 12043 nlmsg_free(msg); 12044 return NULL; 12045 } 12046 12047 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 12048 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex)) 12049 goto nla_put_failure; 12050 12051 if (mac && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac)) 12052 goto nla_put_failure; 12053 12054 cb[1] = nla_nest_start(msg, NL80211_ATTR_CQM); 12055 if (!cb[1]) 12056 goto nla_put_failure; 12057 12058 cb[2] = rdev; 12059 12060 return msg; 12061 nla_put_failure: 12062 nlmsg_free(msg); 12063 return NULL; 12064 } 12065 12066 static void cfg80211_send_cqm(struct sk_buff *msg, gfp_t gfp) 12067 { 12068 void **cb = (void **)msg->cb; 12069 struct cfg80211_registered_device *rdev = cb[2]; 12070 12071 nla_nest_end(msg, cb[1]); 12072 genlmsg_end(msg, cb[0]); 12073 12074 memset(msg->cb, 0, sizeof(msg->cb)); 12075 12076 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 12077 NL80211_MCGRP_MLME, gfp); 12078 } 12079 12080 void cfg80211_cqm_rssi_notify(struct net_device *dev, 12081 enum nl80211_cqm_rssi_threshold_event rssi_event, 12082 gfp_t gfp) 12083 { 12084 struct sk_buff *msg; 12085 12086 trace_cfg80211_cqm_rssi_notify(dev, rssi_event); 12087 12088 if (WARN_ON(rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW && 12089 rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH)) 12090 return; 12091 12092 msg = cfg80211_prepare_cqm(dev, NULL, gfp); 12093 if (!msg) 12094 return; 12095 12096 if (nla_put_u32(msg, NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT, 12097 rssi_event)) 12098 goto nla_put_failure; 12099 12100 cfg80211_send_cqm(msg, gfp); 12101 12102 return; 12103 12104 nla_put_failure: 12105 nlmsg_free(msg); 12106 } 12107 EXPORT_SYMBOL(cfg80211_cqm_rssi_notify); 12108 12109 void cfg80211_cqm_txe_notify(struct net_device *dev, 12110 const u8 *peer, u32 num_packets, 12111 u32 rate, u32 intvl, gfp_t gfp) 12112 { 12113 struct sk_buff *msg; 12114 12115 msg = cfg80211_prepare_cqm(dev, peer, gfp); 12116 if (!msg) 12117 return; 12118 12119 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_PKTS, num_packets)) 12120 goto nla_put_failure; 12121 12122 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_RATE, rate)) 12123 goto nla_put_failure; 12124 12125 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_INTVL, intvl)) 12126 goto nla_put_failure; 12127 12128 cfg80211_send_cqm(msg, gfp); 12129 return; 12130 12131 nla_put_failure: 12132 nlmsg_free(msg); 12133 } 12134 EXPORT_SYMBOL(cfg80211_cqm_txe_notify); 12135 12136 void cfg80211_cqm_pktloss_notify(struct net_device *dev, 12137 const u8 *peer, u32 num_packets, gfp_t gfp) 12138 { 12139 struct sk_buff *msg; 12140 12141 trace_cfg80211_cqm_pktloss_notify(dev, peer, num_packets); 12142 12143 msg = cfg80211_prepare_cqm(dev, peer, gfp); 12144 if (!msg) 12145 return; 12146 12147 if (nla_put_u32(msg, NL80211_ATTR_CQM_PKT_LOSS_EVENT, num_packets)) 12148 goto nla_put_failure; 12149 12150 cfg80211_send_cqm(msg, gfp); 12151 return; 12152 12153 nla_put_failure: 12154 nlmsg_free(msg); 12155 } 12156 EXPORT_SYMBOL(cfg80211_cqm_pktloss_notify); 12157 12158 void cfg80211_cqm_beacon_loss_notify(struct net_device *dev, gfp_t gfp) 12159 { 12160 struct sk_buff *msg; 12161 12162 msg = cfg80211_prepare_cqm(dev, NULL, gfp); 12163 if (!msg) 12164 return; 12165 12166 if (nla_put_flag(msg, NL80211_ATTR_CQM_BEACON_LOSS_EVENT)) 12167 goto nla_put_failure; 12168 12169 cfg80211_send_cqm(msg, gfp); 12170 return; 12171 12172 nla_put_failure: 12173 nlmsg_free(msg); 12174 } 12175 EXPORT_SYMBOL(cfg80211_cqm_beacon_loss_notify); 12176 12177 static void nl80211_gtk_rekey_notify(struct cfg80211_registered_device *rdev, 12178 struct net_device *netdev, const u8 *bssid, 12179 const u8 *replay_ctr, gfp_t gfp) 12180 { 12181 struct sk_buff *msg; 12182 struct nlattr *rekey_attr; 12183 void *hdr; 12184 12185 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 12186 if (!msg) 12187 return; 12188 12189 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_REKEY_OFFLOAD); 12190 if (!hdr) { 12191 nlmsg_free(msg); 12192 return; 12193 } 12194 12195 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 12196 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) || 12197 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid)) 12198 goto nla_put_failure; 12199 12200 rekey_attr = nla_nest_start(msg, NL80211_ATTR_REKEY_DATA); 12201 if (!rekey_attr) 12202 goto nla_put_failure; 12203 12204 if (nla_put(msg, NL80211_REKEY_DATA_REPLAY_CTR, 12205 NL80211_REPLAY_CTR_LEN, replay_ctr)) 12206 goto nla_put_failure; 12207 12208 nla_nest_end(msg, rekey_attr); 12209 12210 genlmsg_end(msg, hdr); 12211 12212 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 12213 NL80211_MCGRP_MLME, gfp); 12214 return; 12215 12216 nla_put_failure: 12217 genlmsg_cancel(msg, hdr); 12218 nlmsg_free(msg); 12219 } 12220 12221 void cfg80211_gtk_rekey_notify(struct net_device *dev, const u8 *bssid, 12222 const u8 *replay_ctr, gfp_t gfp) 12223 { 12224 struct wireless_dev *wdev = dev->ieee80211_ptr; 12225 struct wiphy *wiphy = wdev->wiphy; 12226 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 12227 12228 trace_cfg80211_gtk_rekey_notify(dev, bssid); 12229 nl80211_gtk_rekey_notify(rdev, dev, bssid, replay_ctr, gfp); 12230 } 12231 EXPORT_SYMBOL(cfg80211_gtk_rekey_notify); 12232 12233 static void 12234 nl80211_pmksa_candidate_notify(struct cfg80211_registered_device *rdev, 12235 struct net_device *netdev, int index, 12236 const u8 *bssid, bool preauth, gfp_t gfp) 12237 { 12238 struct sk_buff *msg; 12239 struct nlattr *attr; 12240 void *hdr; 12241 12242 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 12243 if (!msg) 12244 return; 12245 12246 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PMKSA_CANDIDATE); 12247 if (!hdr) { 12248 nlmsg_free(msg); 12249 return; 12250 } 12251 12252 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 12253 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex)) 12254 goto nla_put_failure; 12255 12256 attr = nla_nest_start(msg, NL80211_ATTR_PMKSA_CANDIDATE); 12257 if (!attr) 12258 goto nla_put_failure; 12259 12260 if (nla_put_u32(msg, NL80211_PMKSA_CANDIDATE_INDEX, index) || 12261 nla_put(msg, NL80211_PMKSA_CANDIDATE_BSSID, ETH_ALEN, bssid) || 12262 (preauth && 12263 nla_put_flag(msg, NL80211_PMKSA_CANDIDATE_PREAUTH))) 12264 goto nla_put_failure; 12265 12266 nla_nest_end(msg, attr); 12267 12268 genlmsg_end(msg, hdr); 12269 12270 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 12271 NL80211_MCGRP_MLME, gfp); 12272 return; 12273 12274 nla_put_failure: 12275 genlmsg_cancel(msg, hdr); 12276 nlmsg_free(msg); 12277 } 12278 12279 void cfg80211_pmksa_candidate_notify(struct net_device *dev, int index, 12280 const u8 *bssid, bool preauth, gfp_t gfp) 12281 { 12282 struct wireless_dev *wdev = dev->ieee80211_ptr; 12283 struct wiphy *wiphy = wdev->wiphy; 12284 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 12285 12286 trace_cfg80211_pmksa_candidate_notify(dev, index, bssid, preauth); 12287 nl80211_pmksa_candidate_notify(rdev, dev, index, bssid, preauth, gfp); 12288 } 12289 EXPORT_SYMBOL(cfg80211_pmksa_candidate_notify); 12290 12291 static void nl80211_ch_switch_notify(struct cfg80211_registered_device *rdev, 12292 struct net_device *netdev, 12293 struct cfg80211_chan_def *chandef, 12294 gfp_t gfp, 12295 enum nl80211_commands notif, 12296 u8 count) 12297 { 12298 struct sk_buff *msg; 12299 void *hdr; 12300 12301 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 12302 if (!msg) 12303 return; 12304 12305 hdr = nl80211hdr_put(msg, 0, 0, 0, notif); 12306 if (!hdr) { 12307 nlmsg_free(msg); 12308 return; 12309 } 12310 12311 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex)) 12312 goto nla_put_failure; 12313 12314 if (nl80211_send_chandef(msg, chandef)) 12315 goto nla_put_failure; 12316 12317 if ((notif == NL80211_CMD_CH_SWITCH_STARTED_NOTIFY) && 12318 (nla_put_u32(msg, NL80211_ATTR_CH_SWITCH_COUNT, count))) 12319 goto nla_put_failure; 12320 12321 genlmsg_end(msg, hdr); 12322 12323 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 12324 NL80211_MCGRP_MLME, gfp); 12325 return; 12326 12327 nla_put_failure: 12328 genlmsg_cancel(msg, hdr); 12329 nlmsg_free(msg); 12330 } 12331 12332 void cfg80211_ch_switch_notify(struct net_device *dev, 12333 struct cfg80211_chan_def *chandef) 12334 { 12335 struct wireless_dev *wdev = dev->ieee80211_ptr; 12336 struct wiphy *wiphy = wdev->wiphy; 12337 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 12338 12339 ASSERT_WDEV_LOCK(wdev); 12340 12341 trace_cfg80211_ch_switch_notify(dev, chandef); 12342 12343 wdev->chandef = *chandef; 12344 wdev->preset_chandef = *chandef; 12345 nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL, 12346 NL80211_CMD_CH_SWITCH_NOTIFY, 0); 12347 } 12348 EXPORT_SYMBOL(cfg80211_ch_switch_notify); 12349 12350 void cfg80211_ch_switch_started_notify(struct net_device *dev, 12351 struct cfg80211_chan_def *chandef, 12352 u8 count) 12353 { 12354 struct wireless_dev *wdev = dev->ieee80211_ptr; 12355 struct wiphy *wiphy = wdev->wiphy; 12356 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 12357 12358 trace_cfg80211_ch_switch_started_notify(dev, chandef); 12359 12360 nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL, 12361 NL80211_CMD_CH_SWITCH_STARTED_NOTIFY, count); 12362 } 12363 EXPORT_SYMBOL(cfg80211_ch_switch_started_notify); 12364 12365 void 12366 nl80211_radar_notify(struct cfg80211_registered_device *rdev, 12367 const struct cfg80211_chan_def *chandef, 12368 enum nl80211_radar_event event, 12369 struct net_device *netdev, gfp_t gfp) 12370 { 12371 struct sk_buff *msg; 12372 void *hdr; 12373 12374 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 12375 if (!msg) 12376 return; 12377 12378 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_RADAR_DETECT); 12379 if (!hdr) { 12380 nlmsg_free(msg); 12381 return; 12382 } 12383 12384 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx)) 12385 goto nla_put_failure; 12386 12387 /* NOP and radar events don't need a netdev parameter */ 12388 if (netdev) { 12389 struct wireless_dev *wdev = netdev->ieee80211_ptr; 12390 12391 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) || 12392 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev))) 12393 goto nla_put_failure; 12394 } 12395 12396 if (nla_put_u32(msg, NL80211_ATTR_RADAR_EVENT, event)) 12397 goto nla_put_failure; 12398 12399 if (nl80211_send_chandef(msg, chandef)) 12400 goto nla_put_failure; 12401 12402 genlmsg_end(msg, hdr); 12403 12404 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 12405 NL80211_MCGRP_MLME, gfp); 12406 return; 12407 12408 nla_put_failure: 12409 genlmsg_cancel(msg, hdr); 12410 nlmsg_free(msg); 12411 } 12412 12413 void cfg80211_probe_status(struct net_device *dev, const u8 *addr, 12414 u64 cookie, bool acked, gfp_t gfp) 12415 { 12416 struct wireless_dev *wdev = dev->ieee80211_ptr; 12417 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 12418 struct sk_buff *msg; 12419 void *hdr; 12420 12421 trace_cfg80211_probe_status(dev, addr, cookie, acked); 12422 12423 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 12424 12425 if (!msg) 12426 return; 12427 12428 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PROBE_CLIENT); 12429 if (!hdr) { 12430 nlmsg_free(msg); 12431 return; 12432 } 12433 12434 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 12435 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) || 12436 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) || 12437 nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie) || 12438 (acked && nla_put_flag(msg, NL80211_ATTR_ACK))) 12439 goto nla_put_failure; 12440 12441 genlmsg_end(msg, hdr); 12442 12443 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 12444 NL80211_MCGRP_MLME, gfp); 12445 return; 12446 12447 nla_put_failure: 12448 genlmsg_cancel(msg, hdr); 12449 nlmsg_free(msg); 12450 } 12451 EXPORT_SYMBOL(cfg80211_probe_status); 12452 12453 void cfg80211_report_obss_beacon(struct wiphy *wiphy, 12454 const u8 *frame, size_t len, 12455 int freq, int sig_dbm) 12456 { 12457 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 12458 struct sk_buff *msg; 12459 void *hdr; 12460 struct cfg80211_beacon_registration *reg; 12461 12462 trace_cfg80211_report_obss_beacon(wiphy, frame, len, freq, sig_dbm); 12463 12464 spin_lock_bh(&rdev->beacon_registrations_lock); 12465 list_for_each_entry(reg, &rdev->beacon_registrations, list) { 12466 msg = nlmsg_new(len + 100, GFP_ATOMIC); 12467 if (!msg) { 12468 spin_unlock_bh(&rdev->beacon_registrations_lock); 12469 return; 12470 } 12471 12472 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME); 12473 if (!hdr) 12474 goto nla_put_failure; 12475 12476 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 12477 (freq && 12478 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq)) || 12479 (sig_dbm && 12480 nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) || 12481 nla_put(msg, NL80211_ATTR_FRAME, len, frame)) 12482 goto nla_put_failure; 12483 12484 genlmsg_end(msg, hdr); 12485 12486 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, reg->nlportid); 12487 } 12488 spin_unlock_bh(&rdev->beacon_registrations_lock); 12489 return; 12490 12491 nla_put_failure: 12492 spin_unlock_bh(&rdev->beacon_registrations_lock); 12493 if (hdr) 12494 genlmsg_cancel(msg, hdr); 12495 nlmsg_free(msg); 12496 } 12497 EXPORT_SYMBOL(cfg80211_report_obss_beacon); 12498 12499 #ifdef CONFIG_PM 12500 static int cfg80211_net_detect_results(struct sk_buff *msg, 12501 struct cfg80211_wowlan_wakeup *wakeup) 12502 { 12503 struct cfg80211_wowlan_nd_info *nd = wakeup->net_detect; 12504 struct nlattr *nl_results, *nl_match, *nl_freqs; 12505 int i, j; 12506 12507 nl_results = nla_nest_start( 12508 msg, NL80211_WOWLAN_TRIG_NET_DETECT_RESULTS); 12509 if (!nl_results) 12510 return -EMSGSIZE; 12511 12512 for (i = 0; i < nd->n_matches; i++) { 12513 struct cfg80211_wowlan_nd_match *match = nd->matches[i]; 12514 12515 nl_match = nla_nest_start(msg, i); 12516 if (!nl_match) 12517 break; 12518 12519 /* The SSID attribute is optional in nl80211, but for 12520 * simplicity reasons it's always present in the 12521 * cfg80211 structure. If a driver can't pass the 12522 * SSID, that needs to be changed. A zero length SSID 12523 * is still a valid SSID (wildcard), so it cannot be 12524 * used for this purpose. 12525 */ 12526 if (nla_put(msg, NL80211_ATTR_SSID, match->ssid.ssid_len, 12527 match->ssid.ssid)) { 12528 nla_nest_cancel(msg, nl_match); 12529 goto out; 12530 } 12531 12532 if (match->n_channels) { 12533 nl_freqs = nla_nest_start( 12534 msg, NL80211_ATTR_SCAN_FREQUENCIES); 12535 if (!nl_freqs) { 12536 nla_nest_cancel(msg, nl_match); 12537 goto out; 12538 } 12539 12540 for (j = 0; j < match->n_channels; j++) { 12541 if (nla_put_u32(msg, j, match->channels[j])) { 12542 nla_nest_cancel(msg, nl_freqs); 12543 nla_nest_cancel(msg, nl_match); 12544 goto out; 12545 } 12546 } 12547 12548 nla_nest_end(msg, nl_freqs); 12549 } 12550 12551 nla_nest_end(msg, nl_match); 12552 } 12553 12554 out: 12555 nla_nest_end(msg, nl_results); 12556 return 0; 12557 } 12558 12559 void cfg80211_report_wowlan_wakeup(struct wireless_dev *wdev, 12560 struct cfg80211_wowlan_wakeup *wakeup, 12561 gfp_t gfp) 12562 { 12563 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 12564 struct sk_buff *msg; 12565 void *hdr; 12566 int size = 200; 12567 12568 trace_cfg80211_report_wowlan_wakeup(wdev->wiphy, wdev, wakeup); 12569 12570 if (wakeup) 12571 size += wakeup->packet_present_len; 12572 12573 msg = nlmsg_new(size, gfp); 12574 if (!msg) 12575 return; 12576 12577 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_WOWLAN); 12578 if (!hdr) 12579 goto free_msg; 12580 12581 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 12582 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev))) 12583 goto free_msg; 12584 12585 if (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX, 12586 wdev->netdev->ifindex)) 12587 goto free_msg; 12588 12589 if (wakeup) { 12590 struct nlattr *reasons; 12591 12592 reasons = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS); 12593 if (!reasons) 12594 goto free_msg; 12595 12596 if (wakeup->disconnect && 12597 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) 12598 goto free_msg; 12599 if (wakeup->magic_pkt && 12600 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) 12601 goto free_msg; 12602 if (wakeup->gtk_rekey_failure && 12603 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) 12604 goto free_msg; 12605 if (wakeup->eap_identity_req && 12606 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) 12607 goto free_msg; 12608 if (wakeup->four_way_handshake && 12609 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) 12610 goto free_msg; 12611 if (wakeup->rfkill_release && 12612 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)) 12613 goto free_msg; 12614 12615 if (wakeup->pattern_idx >= 0 && 12616 nla_put_u32(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN, 12617 wakeup->pattern_idx)) 12618 goto free_msg; 12619 12620 if (wakeup->tcp_match && 12621 nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_MATCH)) 12622 goto free_msg; 12623 12624 if (wakeup->tcp_connlost && 12625 nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_CONNLOST)) 12626 goto free_msg; 12627 12628 if (wakeup->tcp_nomoretokens && 12629 nla_put_flag(msg, 12630 NL80211_WOWLAN_TRIG_WAKEUP_TCP_NOMORETOKENS)) 12631 goto free_msg; 12632 12633 if (wakeup->packet) { 12634 u32 pkt_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211; 12635 u32 len_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211_LEN; 12636 12637 if (!wakeup->packet_80211) { 12638 pkt_attr = 12639 NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023; 12640 len_attr = 12641 NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023_LEN; 12642 } 12643 12644 if (wakeup->packet_len && 12645 nla_put_u32(msg, len_attr, wakeup->packet_len)) 12646 goto free_msg; 12647 12648 if (nla_put(msg, pkt_attr, wakeup->packet_present_len, 12649 wakeup->packet)) 12650 goto free_msg; 12651 } 12652 12653 if (wakeup->net_detect && 12654 cfg80211_net_detect_results(msg, wakeup)) 12655 goto free_msg; 12656 12657 nla_nest_end(msg, reasons); 12658 } 12659 12660 genlmsg_end(msg, hdr); 12661 12662 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 12663 NL80211_MCGRP_MLME, gfp); 12664 return; 12665 12666 free_msg: 12667 nlmsg_free(msg); 12668 } 12669 EXPORT_SYMBOL(cfg80211_report_wowlan_wakeup); 12670 #endif 12671 12672 void cfg80211_tdls_oper_request(struct net_device *dev, const u8 *peer, 12673 enum nl80211_tdls_operation oper, 12674 u16 reason_code, gfp_t gfp) 12675 { 12676 struct wireless_dev *wdev = dev->ieee80211_ptr; 12677 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 12678 struct sk_buff *msg; 12679 void *hdr; 12680 12681 trace_cfg80211_tdls_oper_request(wdev->wiphy, dev, peer, oper, 12682 reason_code); 12683 12684 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 12685 if (!msg) 12686 return; 12687 12688 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_TDLS_OPER); 12689 if (!hdr) { 12690 nlmsg_free(msg); 12691 return; 12692 } 12693 12694 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 12695 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) || 12696 nla_put_u8(msg, NL80211_ATTR_TDLS_OPERATION, oper) || 12697 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer) || 12698 (reason_code > 0 && 12699 nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason_code))) 12700 goto nla_put_failure; 12701 12702 genlmsg_end(msg, hdr); 12703 12704 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 12705 NL80211_MCGRP_MLME, gfp); 12706 return; 12707 12708 nla_put_failure: 12709 genlmsg_cancel(msg, hdr); 12710 nlmsg_free(msg); 12711 } 12712 EXPORT_SYMBOL(cfg80211_tdls_oper_request); 12713 12714 static int nl80211_netlink_notify(struct notifier_block * nb, 12715 unsigned long state, 12716 void *_notify) 12717 { 12718 struct netlink_notify *notify = _notify; 12719 struct cfg80211_registered_device *rdev; 12720 struct wireless_dev *wdev; 12721 struct cfg80211_beacon_registration *reg, *tmp; 12722 12723 if (state != NETLINK_URELEASE) 12724 return NOTIFY_DONE; 12725 12726 rcu_read_lock(); 12727 12728 list_for_each_entry_rcu(rdev, &cfg80211_rdev_list, list) { 12729 bool schedule_destroy_work = false; 12730 bool schedule_scan_stop = false; 12731 struct cfg80211_sched_scan_request *sched_scan_req = 12732 rcu_dereference(rdev->sched_scan_req); 12733 12734 if (sched_scan_req && notify->portid && 12735 sched_scan_req->owner_nlportid == notify->portid) 12736 schedule_scan_stop = true; 12737 12738 list_for_each_entry_rcu(wdev, &rdev->wdev_list, list) { 12739 cfg80211_mlme_unregister_socket(wdev, notify->portid); 12740 12741 if (wdev->owner_nlportid == notify->portid) 12742 schedule_destroy_work = true; 12743 } 12744 12745 spin_lock_bh(&rdev->beacon_registrations_lock); 12746 list_for_each_entry_safe(reg, tmp, &rdev->beacon_registrations, 12747 list) { 12748 if (reg->nlportid == notify->portid) { 12749 list_del(®->list); 12750 kfree(reg); 12751 break; 12752 } 12753 } 12754 spin_unlock_bh(&rdev->beacon_registrations_lock); 12755 12756 if (schedule_destroy_work) { 12757 struct cfg80211_iface_destroy *destroy; 12758 12759 destroy = kzalloc(sizeof(*destroy), GFP_ATOMIC); 12760 if (destroy) { 12761 destroy->nlportid = notify->portid; 12762 spin_lock(&rdev->destroy_list_lock); 12763 list_add(&destroy->list, &rdev->destroy_list); 12764 spin_unlock(&rdev->destroy_list_lock); 12765 schedule_work(&rdev->destroy_work); 12766 } 12767 } else if (schedule_scan_stop) { 12768 sched_scan_req->owner_nlportid = 0; 12769 12770 if (rdev->ops->sched_scan_stop && 12771 rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) 12772 schedule_work(&rdev->sched_scan_stop_wk); 12773 } 12774 } 12775 12776 rcu_read_unlock(); 12777 12778 return NOTIFY_OK; 12779 } 12780 12781 static struct notifier_block nl80211_netlink_notifier = { 12782 .notifier_call = nl80211_netlink_notify, 12783 }; 12784 12785 void cfg80211_ft_event(struct net_device *netdev, 12786 struct cfg80211_ft_event_params *ft_event) 12787 { 12788 struct wiphy *wiphy = netdev->ieee80211_ptr->wiphy; 12789 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 12790 struct sk_buff *msg; 12791 void *hdr; 12792 12793 trace_cfg80211_ft_event(wiphy, netdev, ft_event); 12794 12795 if (!ft_event->target_ap) 12796 return; 12797 12798 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 12799 if (!msg) 12800 return; 12801 12802 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FT_EVENT); 12803 if (!hdr) 12804 goto out; 12805 12806 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 12807 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) || 12808 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, ft_event->target_ap)) 12809 goto out; 12810 12811 if (ft_event->ies && 12812 nla_put(msg, NL80211_ATTR_IE, ft_event->ies_len, ft_event->ies)) 12813 goto out; 12814 if (ft_event->ric_ies && 12815 nla_put(msg, NL80211_ATTR_IE_RIC, ft_event->ric_ies_len, 12816 ft_event->ric_ies)) 12817 goto out; 12818 12819 genlmsg_end(msg, hdr); 12820 12821 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 12822 NL80211_MCGRP_MLME, GFP_KERNEL); 12823 return; 12824 out: 12825 nlmsg_free(msg); 12826 } 12827 EXPORT_SYMBOL(cfg80211_ft_event); 12828 12829 void cfg80211_crit_proto_stopped(struct wireless_dev *wdev, gfp_t gfp) 12830 { 12831 struct cfg80211_registered_device *rdev; 12832 struct sk_buff *msg; 12833 void *hdr; 12834 u32 nlportid; 12835 12836 rdev = wiphy_to_rdev(wdev->wiphy); 12837 if (!rdev->crit_proto_nlportid) 12838 return; 12839 12840 nlportid = rdev->crit_proto_nlportid; 12841 rdev->crit_proto_nlportid = 0; 12842 12843 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 12844 if (!msg) 12845 return; 12846 12847 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CRIT_PROTOCOL_STOP); 12848 if (!hdr) 12849 goto nla_put_failure; 12850 12851 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 12852 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev))) 12853 goto nla_put_failure; 12854 12855 genlmsg_end(msg, hdr); 12856 12857 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid); 12858 return; 12859 12860 nla_put_failure: 12861 if (hdr) 12862 genlmsg_cancel(msg, hdr); 12863 nlmsg_free(msg); 12864 12865 } 12866 EXPORT_SYMBOL(cfg80211_crit_proto_stopped); 12867 12868 void nl80211_send_ap_stopped(struct wireless_dev *wdev) 12869 { 12870 struct wiphy *wiphy = wdev->wiphy; 12871 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 12872 struct sk_buff *msg; 12873 void *hdr; 12874 12875 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 12876 if (!msg) 12877 return; 12878 12879 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_STOP_AP); 12880 if (!hdr) 12881 goto out; 12882 12883 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 12884 nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex) || 12885 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev))) 12886 goto out; 12887 12888 genlmsg_end(msg, hdr); 12889 12890 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(wiphy), msg, 0, 12891 NL80211_MCGRP_MLME, GFP_KERNEL); 12892 return; 12893 out: 12894 nlmsg_free(msg); 12895 } 12896 12897 /* initialisation/exit functions */ 12898 12899 int nl80211_init(void) 12900 { 12901 int err; 12902 12903 err = genl_register_family_with_ops_groups(&nl80211_fam, nl80211_ops, 12904 nl80211_mcgrps); 12905 if (err) 12906 return err; 12907 12908 err = netlink_register_notifier(&nl80211_netlink_notifier); 12909 if (err) 12910 goto err_out; 12911 12912 return 0; 12913 err_out: 12914 genl_unregister_family(&nl80211_fam); 12915 return err; 12916 } 12917 12918 void nl80211_exit(void) 12919 { 12920 netlink_unregister_notifier(&nl80211_netlink_notifier); 12921 genl_unregister_family(&nl80211_fam); 12922 } 12923