1 /* 2 * This is the new netlink-based wireless configuration interface. 3 * 4 * Copyright 2006-2010 Johannes Berg <johannes@sipsolutions.net> 5 */ 6 7 #include <linux/if.h> 8 #include <linux/module.h> 9 #include <linux/err.h> 10 #include <linux/slab.h> 11 #include <linux/list.h> 12 #include <linux/if_ether.h> 13 #include <linux/ieee80211.h> 14 #include <linux/nl80211.h> 15 #include <linux/rtnetlink.h> 16 #include <linux/netlink.h> 17 #include <linux/etherdevice.h> 18 #include <net/net_namespace.h> 19 #include <net/genetlink.h> 20 #include <net/cfg80211.h> 21 #include <net/sock.h> 22 #include <net/inet_connection_sock.h> 23 #include "core.h" 24 #include "nl80211.h" 25 #include "reg.h" 26 #include "rdev-ops.h" 27 28 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev, 29 struct genl_info *info, 30 struct cfg80211_crypto_settings *settings, 31 int cipher_limit); 32 33 static int nl80211_pre_doit(struct genl_ops *ops, struct sk_buff *skb, 34 struct genl_info *info); 35 static void nl80211_post_doit(struct genl_ops *ops, struct sk_buff *skb, 36 struct genl_info *info); 37 38 /* the netlink family */ 39 static struct genl_family nl80211_fam = { 40 .id = GENL_ID_GENERATE, /* don't bother with a hardcoded ID */ 41 .name = "nl80211", /* have users key off the name instead */ 42 .hdrsize = 0, /* no private header */ 43 .version = 1, /* no particular meaning now */ 44 .maxattr = NL80211_ATTR_MAX, 45 .netnsok = true, 46 .pre_doit = nl80211_pre_doit, 47 .post_doit = nl80211_post_doit, 48 }; 49 50 /* returns ERR_PTR values */ 51 static struct wireless_dev * 52 __cfg80211_wdev_from_attrs(struct net *netns, struct nlattr **attrs) 53 { 54 struct cfg80211_registered_device *rdev; 55 struct wireless_dev *result = NULL; 56 bool have_ifidx = attrs[NL80211_ATTR_IFINDEX]; 57 bool have_wdev_id = attrs[NL80211_ATTR_WDEV]; 58 u64 wdev_id; 59 int wiphy_idx = -1; 60 int ifidx = -1; 61 62 assert_cfg80211_lock(); 63 64 if (!have_ifidx && !have_wdev_id) 65 return ERR_PTR(-EINVAL); 66 67 if (have_ifidx) 68 ifidx = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]); 69 if (have_wdev_id) { 70 wdev_id = nla_get_u64(attrs[NL80211_ATTR_WDEV]); 71 wiphy_idx = wdev_id >> 32; 72 } 73 74 list_for_each_entry(rdev, &cfg80211_rdev_list, list) { 75 struct wireless_dev *wdev; 76 77 if (wiphy_net(&rdev->wiphy) != netns) 78 continue; 79 80 if (have_wdev_id && rdev->wiphy_idx != wiphy_idx) 81 continue; 82 83 mutex_lock(&rdev->devlist_mtx); 84 list_for_each_entry(wdev, &rdev->wdev_list, list) { 85 if (have_ifidx && wdev->netdev && 86 wdev->netdev->ifindex == ifidx) { 87 result = wdev; 88 break; 89 } 90 if (have_wdev_id && wdev->identifier == (u32)wdev_id) { 91 result = wdev; 92 break; 93 } 94 } 95 mutex_unlock(&rdev->devlist_mtx); 96 97 if (result) 98 break; 99 } 100 101 if (result) 102 return result; 103 return ERR_PTR(-ENODEV); 104 } 105 106 static struct cfg80211_registered_device * 107 __cfg80211_rdev_from_attrs(struct net *netns, struct nlattr **attrs) 108 { 109 struct cfg80211_registered_device *rdev = NULL, *tmp; 110 struct net_device *netdev; 111 112 assert_cfg80211_lock(); 113 114 if (!attrs[NL80211_ATTR_WIPHY] && 115 !attrs[NL80211_ATTR_IFINDEX] && 116 !attrs[NL80211_ATTR_WDEV]) 117 return ERR_PTR(-EINVAL); 118 119 if (attrs[NL80211_ATTR_WIPHY]) 120 rdev = cfg80211_rdev_by_wiphy_idx( 121 nla_get_u32(attrs[NL80211_ATTR_WIPHY])); 122 123 if (attrs[NL80211_ATTR_WDEV]) { 124 u64 wdev_id = nla_get_u64(attrs[NL80211_ATTR_WDEV]); 125 struct wireless_dev *wdev; 126 bool found = false; 127 128 tmp = cfg80211_rdev_by_wiphy_idx(wdev_id >> 32); 129 if (tmp) { 130 /* make sure wdev exists */ 131 mutex_lock(&tmp->devlist_mtx); 132 list_for_each_entry(wdev, &tmp->wdev_list, list) { 133 if (wdev->identifier != (u32)wdev_id) 134 continue; 135 found = true; 136 break; 137 } 138 mutex_unlock(&tmp->devlist_mtx); 139 140 if (!found) 141 tmp = NULL; 142 143 if (rdev && tmp != rdev) 144 return ERR_PTR(-EINVAL); 145 rdev = tmp; 146 } 147 } 148 149 if (attrs[NL80211_ATTR_IFINDEX]) { 150 int ifindex = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]); 151 netdev = dev_get_by_index(netns, ifindex); 152 if (netdev) { 153 if (netdev->ieee80211_ptr) 154 tmp = wiphy_to_dev( 155 netdev->ieee80211_ptr->wiphy); 156 else 157 tmp = NULL; 158 159 dev_put(netdev); 160 161 /* not wireless device -- return error */ 162 if (!tmp) 163 return ERR_PTR(-EINVAL); 164 165 /* mismatch -- return error */ 166 if (rdev && tmp != rdev) 167 return ERR_PTR(-EINVAL); 168 169 rdev = tmp; 170 } 171 } 172 173 if (!rdev) 174 return ERR_PTR(-ENODEV); 175 176 if (netns != wiphy_net(&rdev->wiphy)) 177 return ERR_PTR(-ENODEV); 178 179 return rdev; 180 } 181 182 /* 183 * This function returns a pointer to the driver 184 * that the genl_info item that is passed refers to. 185 * If successful, it returns non-NULL and also locks 186 * the driver's mutex! 187 * 188 * This means that you need to call cfg80211_unlock_rdev() 189 * before being allowed to acquire &cfg80211_mutex! 190 * 191 * This is necessary because we need to lock the global 192 * mutex to get an item off the list safely, and then 193 * we lock the rdev mutex so it doesn't go away under us. 194 * 195 * We don't want to keep cfg80211_mutex locked 196 * for all the time in order to allow requests on 197 * other interfaces to go through at the same time. 198 * 199 * The result of this can be a PTR_ERR and hence must 200 * be checked with IS_ERR() for errors. 201 */ 202 static struct cfg80211_registered_device * 203 cfg80211_get_dev_from_info(struct net *netns, struct genl_info *info) 204 { 205 struct cfg80211_registered_device *rdev; 206 207 mutex_lock(&cfg80211_mutex); 208 rdev = __cfg80211_rdev_from_attrs(netns, info->attrs); 209 210 /* if it is not an error we grab the lock on 211 * it to assure it won't be going away while 212 * we operate on it */ 213 if (!IS_ERR(rdev)) 214 mutex_lock(&rdev->mtx); 215 216 mutex_unlock(&cfg80211_mutex); 217 218 return rdev; 219 } 220 221 /* policy for the attributes */ 222 static const struct nla_policy nl80211_policy[NL80211_ATTR_MAX+1] = { 223 [NL80211_ATTR_WIPHY] = { .type = NLA_U32 }, 224 [NL80211_ATTR_WIPHY_NAME] = { .type = NLA_NUL_STRING, 225 .len = 20-1 }, 226 [NL80211_ATTR_WIPHY_TXQ_PARAMS] = { .type = NLA_NESTED }, 227 228 [NL80211_ATTR_WIPHY_FREQ] = { .type = NLA_U32 }, 229 [NL80211_ATTR_WIPHY_CHANNEL_TYPE] = { .type = NLA_U32 }, 230 [NL80211_ATTR_CHANNEL_WIDTH] = { .type = NLA_U32 }, 231 [NL80211_ATTR_CENTER_FREQ1] = { .type = NLA_U32 }, 232 [NL80211_ATTR_CENTER_FREQ2] = { .type = NLA_U32 }, 233 234 [NL80211_ATTR_WIPHY_RETRY_SHORT] = { .type = NLA_U8 }, 235 [NL80211_ATTR_WIPHY_RETRY_LONG] = { .type = NLA_U8 }, 236 [NL80211_ATTR_WIPHY_FRAG_THRESHOLD] = { .type = NLA_U32 }, 237 [NL80211_ATTR_WIPHY_RTS_THRESHOLD] = { .type = NLA_U32 }, 238 [NL80211_ATTR_WIPHY_COVERAGE_CLASS] = { .type = NLA_U8 }, 239 240 [NL80211_ATTR_IFTYPE] = { .type = NLA_U32 }, 241 [NL80211_ATTR_IFINDEX] = { .type = NLA_U32 }, 242 [NL80211_ATTR_IFNAME] = { .type = NLA_NUL_STRING, .len = IFNAMSIZ-1 }, 243 244 [NL80211_ATTR_MAC] = { .len = ETH_ALEN }, 245 [NL80211_ATTR_PREV_BSSID] = { .len = ETH_ALEN }, 246 247 [NL80211_ATTR_KEY] = { .type = NLA_NESTED, }, 248 [NL80211_ATTR_KEY_DATA] = { .type = NLA_BINARY, 249 .len = WLAN_MAX_KEY_LEN }, 250 [NL80211_ATTR_KEY_IDX] = { .type = NLA_U8 }, 251 [NL80211_ATTR_KEY_CIPHER] = { .type = NLA_U32 }, 252 [NL80211_ATTR_KEY_DEFAULT] = { .type = NLA_FLAG }, 253 [NL80211_ATTR_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 }, 254 [NL80211_ATTR_KEY_TYPE] = { .type = NLA_U32 }, 255 256 [NL80211_ATTR_BEACON_INTERVAL] = { .type = NLA_U32 }, 257 [NL80211_ATTR_DTIM_PERIOD] = { .type = NLA_U32 }, 258 [NL80211_ATTR_BEACON_HEAD] = { .type = NLA_BINARY, 259 .len = IEEE80211_MAX_DATA_LEN }, 260 [NL80211_ATTR_BEACON_TAIL] = { .type = NLA_BINARY, 261 .len = IEEE80211_MAX_DATA_LEN }, 262 [NL80211_ATTR_STA_AID] = { .type = NLA_U16 }, 263 [NL80211_ATTR_STA_FLAGS] = { .type = NLA_NESTED }, 264 [NL80211_ATTR_STA_LISTEN_INTERVAL] = { .type = NLA_U16 }, 265 [NL80211_ATTR_STA_SUPPORTED_RATES] = { .type = NLA_BINARY, 266 .len = NL80211_MAX_SUPP_RATES }, 267 [NL80211_ATTR_STA_PLINK_ACTION] = { .type = NLA_U8 }, 268 [NL80211_ATTR_STA_VLAN] = { .type = NLA_U32 }, 269 [NL80211_ATTR_MNTR_FLAGS] = { /* NLA_NESTED can't be empty */ }, 270 [NL80211_ATTR_MESH_ID] = { .type = NLA_BINARY, 271 .len = IEEE80211_MAX_MESH_ID_LEN }, 272 [NL80211_ATTR_MPATH_NEXT_HOP] = { .type = NLA_U32 }, 273 274 [NL80211_ATTR_REG_ALPHA2] = { .type = NLA_STRING, .len = 2 }, 275 [NL80211_ATTR_REG_RULES] = { .type = NLA_NESTED }, 276 277 [NL80211_ATTR_BSS_CTS_PROT] = { .type = NLA_U8 }, 278 [NL80211_ATTR_BSS_SHORT_PREAMBLE] = { .type = NLA_U8 }, 279 [NL80211_ATTR_BSS_SHORT_SLOT_TIME] = { .type = NLA_U8 }, 280 [NL80211_ATTR_BSS_BASIC_RATES] = { .type = NLA_BINARY, 281 .len = NL80211_MAX_SUPP_RATES }, 282 [NL80211_ATTR_BSS_HT_OPMODE] = { .type = NLA_U16 }, 283 284 [NL80211_ATTR_MESH_CONFIG] = { .type = NLA_NESTED }, 285 [NL80211_ATTR_SUPPORT_MESH_AUTH] = { .type = NLA_FLAG }, 286 287 [NL80211_ATTR_HT_CAPABILITY] = { .len = NL80211_HT_CAPABILITY_LEN }, 288 289 [NL80211_ATTR_MGMT_SUBTYPE] = { .type = NLA_U8 }, 290 [NL80211_ATTR_IE] = { .type = NLA_BINARY, 291 .len = IEEE80211_MAX_DATA_LEN }, 292 [NL80211_ATTR_SCAN_FREQUENCIES] = { .type = NLA_NESTED }, 293 [NL80211_ATTR_SCAN_SSIDS] = { .type = NLA_NESTED }, 294 295 [NL80211_ATTR_SSID] = { .type = NLA_BINARY, 296 .len = IEEE80211_MAX_SSID_LEN }, 297 [NL80211_ATTR_AUTH_TYPE] = { .type = NLA_U32 }, 298 [NL80211_ATTR_REASON_CODE] = { .type = NLA_U16 }, 299 [NL80211_ATTR_FREQ_FIXED] = { .type = NLA_FLAG }, 300 [NL80211_ATTR_TIMED_OUT] = { .type = NLA_FLAG }, 301 [NL80211_ATTR_USE_MFP] = { .type = NLA_U32 }, 302 [NL80211_ATTR_STA_FLAGS2] = { 303 .len = sizeof(struct nl80211_sta_flag_update), 304 }, 305 [NL80211_ATTR_CONTROL_PORT] = { .type = NLA_FLAG }, 306 [NL80211_ATTR_CONTROL_PORT_ETHERTYPE] = { .type = NLA_U16 }, 307 [NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT] = { .type = NLA_FLAG }, 308 [NL80211_ATTR_PRIVACY] = { .type = NLA_FLAG }, 309 [NL80211_ATTR_CIPHER_SUITE_GROUP] = { .type = NLA_U32 }, 310 [NL80211_ATTR_WPA_VERSIONS] = { .type = NLA_U32 }, 311 [NL80211_ATTR_PID] = { .type = NLA_U32 }, 312 [NL80211_ATTR_4ADDR] = { .type = NLA_U8 }, 313 [NL80211_ATTR_PMKID] = { .type = NLA_BINARY, 314 .len = WLAN_PMKID_LEN }, 315 [NL80211_ATTR_DURATION] = { .type = NLA_U32 }, 316 [NL80211_ATTR_COOKIE] = { .type = NLA_U64 }, 317 [NL80211_ATTR_TX_RATES] = { .type = NLA_NESTED }, 318 [NL80211_ATTR_FRAME] = { .type = NLA_BINARY, 319 .len = IEEE80211_MAX_DATA_LEN }, 320 [NL80211_ATTR_FRAME_MATCH] = { .type = NLA_BINARY, }, 321 [NL80211_ATTR_PS_STATE] = { .type = NLA_U32 }, 322 [NL80211_ATTR_CQM] = { .type = NLA_NESTED, }, 323 [NL80211_ATTR_LOCAL_STATE_CHANGE] = { .type = NLA_FLAG }, 324 [NL80211_ATTR_AP_ISOLATE] = { .type = NLA_U8 }, 325 [NL80211_ATTR_WIPHY_TX_POWER_SETTING] = { .type = NLA_U32 }, 326 [NL80211_ATTR_WIPHY_TX_POWER_LEVEL] = { .type = NLA_U32 }, 327 [NL80211_ATTR_FRAME_TYPE] = { .type = NLA_U16 }, 328 [NL80211_ATTR_WIPHY_ANTENNA_TX] = { .type = NLA_U32 }, 329 [NL80211_ATTR_WIPHY_ANTENNA_RX] = { .type = NLA_U32 }, 330 [NL80211_ATTR_MCAST_RATE] = { .type = NLA_U32 }, 331 [NL80211_ATTR_OFFCHANNEL_TX_OK] = { .type = NLA_FLAG }, 332 [NL80211_ATTR_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED }, 333 [NL80211_ATTR_WOWLAN_TRIGGERS] = { .type = NLA_NESTED }, 334 [NL80211_ATTR_STA_PLINK_STATE] = { .type = NLA_U8 }, 335 [NL80211_ATTR_SCHED_SCAN_INTERVAL] = { .type = NLA_U32 }, 336 [NL80211_ATTR_REKEY_DATA] = { .type = NLA_NESTED }, 337 [NL80211_ATTR_SCAN_SUPP_RATES] = { .type = NLA_NESTED }, 338 [NL80211_ATTR_HIDDEN_SSID] = { .type = NLA_U32 }, 339 [NL80211_ATTR_IE_PROBE_RESP] = { .type = NLA_BINARY, 340 .len = IEEE80211_MAX_DATA_LEN }, 341 [NL80211_ATTR_IE_ASSOC_RESP] = { .type = NLA_BINARY, 342 .len = IEEE80211_MAX_DATA_LEN }, 343 [NL80211_ATTR_ROAM_SUPPORT] = { .type = NLA_FLAG }, 344 [NL80211_ATTR_SCHED_SCAN_MATCH] = { .type = NLA_NESTED }, 345 [NL80211_ATTR_TX_NO_CCK_RATE] = { .type = NLA_FLAG }, 346 [NL80211_ATTR_TDLS_ACTION] = { .type = NLA_U8 }, 347 [NL80211_ATTR_TDLS_DIALOG_TOKEN] = { .type = NLA_U8 }, 348 [NL80211_ATTR_TDLS_OPERATION] = { .type = NLA_U8 }, 349 [NL80211_ATTR_TDLS_SUPPORT] = { .type = NLA_FLAG }, 350 [NL80211_ATTR_TDLS_EXTERNAL_SETUP] = { .type = NLA_FLAG }, 351 [NL80211_ATTR_DONT_WAIT_FOR_ACK] = { .type = NLA_FLAG }, 352 [NL80211_ATTR_PROBE_RESP] = { .type = NLA_BINARY, 353 .len = IEEE80211_MAX_DATA_LEN }, 354 [NL80211_ATTR_DFS_REGION] = { .type = NLA_U8 }, 355 [NL80211_ATTR_DISABLE_HT] = { .type = NLA_FLAG }, 356 [NL80211_ATTR_HT_CAPABILITY_MASK] = { 357 .len = NL80211_HT_CAPABILITY_LEN 358 }, 359 [NL80211_ATTR_NOACK_MAP] = { .type = NLA_U16 }, 360 [NL80211_ATTR_INACTIVITY_TIMEOUT] = { .type = NLA_U16 }, 361 [NL80211_ATTR_BG_SCAN_PERIOD] = { .type = NLA_U16 }, 362 [NL80211_ATTR_WDEV] = { .type = NLA_U64 }, 363 [NL80211_ATTR_USER_REG_HINT_TYPE] = { .type = NLA_U32 }, 364 [NL80211_ATTR_SAE_DATA] = { .type = NLA_BINARY, }, 365 [NL80211_ATTR_VHT_CAPABILITY] = { .len = NL80211_VHT_CAPABILITY_LEN }, 366 [NL80211_ATTR_SCAN_FLAGS] = { .type = NLA_U32 }, 367 [NL80211_ATTR_P2P_CTWINDOW] = { .type = NLA_U8 }, 368 [NL80211_ATTR_P2P_OPPPS] = { .type = NLA_U8 }, 369 [NL80211_ATTR_ACL_POLICY] = {. type = NLA_U32 }, 370 [NL80211_ATTR_MAC_ADDRS] = { .type = NLA_NESTED }, 371 [NL80211_ATTR_STA_CAPABILITY] = { .type = NLA_U16 }, 372 [NL80211_ATTR_STA_EXT_CAPABILITY] = { .type = NLA_BINARY, }, 373 [NL80211_ATTR_SPLIT_WIPHY_DUMP] = { .type = NLA_FLAG, }, 374 [NL80211_ATTR_DISABLE_VHT] = { .type = NLA_FLAG }, 375 [NL80211_ATTR_VHT_CAPABILITY_MASK] = { 376 .len = NL80211_VHT_CAPABILITY_LEN, 377 }, 378 [NL80211_ATTR_MDID] = { .type = NLA_U16 }, 379 [NL80211_ATTR_IE_RIC] = { .type = NLA_BINARY, 380 .len = IEEE80211_MAX_DATA_LEN }, 381 }; 382 383 /* policy for the key attributes */ 384 static const struct nla_policy nl80211_key_policy[NL80211_KEY_MAX + 1] = { 385 [NL80211_KEY_DATA] = { .type = NLA_BINARY, .len = WLAN_MAX_KEY_LEN }, 386 [NL80211_KEY_IDX] = { .type = NLA_U8 }, 387 [NL80211_KEY_CIPHER] = { .type = NLA_U32 }, 388 [NL80211_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 }, 389 [NL80211_KEY_DEFAULT] = { .type = NLA_FLAG }, 390 [NL80211_KEY_DEFAULT_MGMT] = { .type = NLA_FLAG }, 391 [NL80211_KEY_TYPE] = { .type = NLA_U32 }, 392 [NL80211_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED }, 393 }; 394 395 /* policy for the key default flags */ 396 static const struct nla_policy 397 nl80211_key_default_policy[NUM_NL80211_KEY_DEFAULT_TYPES] = { 398 [NL80211_KEY_DEFAULT_TYPE_UNICAST] = { .type = NLA_FLAG }, 399 [NL80211_KEY_DEFAULT_TYPE_MULTICAST] = { .type = NLA_FLAG }, 400 }; 401 402 /* policy for WoWLAN attributes */ 403 static const struct nla_policy 404 nl80211_wowlan_policy[NUM_NL80211_WOWLAN_TRIG] = { 405 [NL80211_WOWLAN_TRIG_ANY] = { .type = NLA_FLAG }, 406 [NL80211_WOWLAN_TRIG_DISCONNECT] = { .type = NLA_FLAG }, 407 [NL80211_WOWLAN_TRIG_MAGIC_PKT] = { .type = NLA_FLAG }, 408 [NL80211_WOWLAN_TRIG_PKT_PATTERN] = { .type = NLA_NESTED }, 409 [NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE] = { .type = NLA_FLAG }, 410 [NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST] = { .type = NLA_FLAG }, 411 [NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE] = { .type = NLA_FLAG }, 412 [NL80211_WOWLAN_TRIG_RFKILL_RELEASE] = { .type = NLA_FLAG }, 413 [NL80211_WOWLAN_TRIG_TCP_CONNECTION] = { .type = NLA_NESTED }, 414 }; 415 416 static const struct nla_policy 417 nl80211_wowlan_tcp_policy[NUM_NL80211_WOWLAN_TCP] = { 418 [NL80211_WOWLAN_TCP_SRC_IPV4] = { .type = NLA_U32 }, 419 [NL80211_WOWLAN_TCP_DST_IPV4] = { .type = NLA_U32 }, 420 [NL80211_WOWLAN_TCP_DST_MAC] = { .len = ETH_ALEN }, 421 [NL80211_WOWLAN_TCP_SRC_PORT] = { .type = NLA_U16 }, 422 [NL80211_WOWLAN_TCP_DST_PORT] = { .type = NLA_U16 }, 423 [NL80211_WOWLAN_TCP_DATA_PAYLOAD] = { .len = 1 }, 424 [NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ] = { 425 .len = sizeof(struct nl80211_wowlan_tcp_data_seq) 426 }, 427 [NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN] = { 428 .len = sizeof(struct nl80211_wowlan_tcp_data_token) 429 }, 430 [NL80211_WOWLAN_TCP_DATA_INTERVAL] = { .type = NLA_U32 }, 431 [NL80211_WOWLAN_TCP_WAKE_PAYLOAD] = { .len = 1 }, 432 [NL80211_WOWLAN_TCP_WAKE_MASK] = { .len = 1 }, 433 }; 434 435 /* policy for GTK rekey offload attributes */ 436 static const struct nla_policy 437 nl80211_rekey_policy[NUM_NL80211_REKEY_DATA] = { 438 [NL80211_REKEY_DATA_KEK] = { .len = NL80211_KEK_LEN }, 439 [NL80211_REKEY_DATA_KCK] = { .len = NL80211_KCK_LEN }, 440 [NL80211_REKEY_DATA_REPLAY_CTR] = { .len = NL80211_REPLAY_CTR_LEN }, 441 }; 442 443 static const struct nla_policy 444 nl80211_match_policy[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1] = { 445 [NL80211_SCHED_SCAN_MATCH_ATTR_SSID] = { .type = NLA_BINARY, 446 .len = IEEE80211_MAX_SSID_LEN }, 447 [NL80211_SCHED_SCAN_MATCH_ATTR_RSSI] = { .type = NLA_U32 }, 448 }; 449 450 /* ifidx get helper */ 451 static int nl80211_get_ifidx(struct netlink_callback *cb) 452 { 453 int res; 454 455 res = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize, 456 nl80211_fam.attrbuf, nl80211_fam.maxattr, 457 nl80211_policy); 458 if (res) 459 return res; 460 461 if (!nl80211_fam.attrbuf[NL80211_ATTR_IFINDEX]) 462 return -EINVAL; 463 464 res = nla_get_u32(nl80211_fam.attrbuf[NL80211_ATTR_IFINDEX]); 465 if (!res) 466 return -EINVAL; 467 return res; 468 } 469 470 static int nl80211_prepare_netdev_dump(struct sk_buff *skb, 471 struct netlink_callback *cb, 472 struct cfg80211_registered_device **rdev, 473 struct net_device **dev) 474 { 475 int ifidx = cb->args[0]; 476 int err; 477 478 if (!ifidx) 479 ifidx = nl80211_get_ifidx(cb); 480 if (ifidx < 0) 481 return ifidx; 482 483 cb->args[0] = ifidx; 484 485 rtnl_lock(); 486 487 *dev = __dev_get_by_index(sock_net(skb->sk), ifidx); 488 if (!*dev) { 489 err = -ENODEV; 490 goto out_rtnl; 491 } 492 493 *rdev = cfg80211_get_dev_from_ifindex(sock_net(skb->sk), ifidx); 494 if (IS_ERR(*rdev)) { 495 err = PTR_ERR(*rdev); 496 goto out_rtnl; 497 } 498 499 return 0; 500 out_rtnl: 501 rtnl_unlock(); 502 return err; 503 } 504 505 static void nl80211_finish_netdev_dump(struct cfg80211_registered_device *rdev) 506 { 507 cfg80211_unlock_rdev(rdev); 508 rtnl_unlock(); 509 } 510 511 /* IE validation */ 512 static bool is_valid_ie_attr(const struct nlattr *attr) 513 { 514 const u8 *pos; 515 int len; 516 517 if (!attr) 518 return true; 519 520 pos = nla_data(attr); 521 len = nla_len(attr); 522 523 while (len) { 524 u8 elemlen; 525 526 if (len < 2) 527 return false; 528 len -= 2; 529 530 elemlen = pos[1]; 531 if (elemlen > len) 532 return false; 533 534 len -= elemlen; 535 pos += 2 + elemlen; 536 } 537 538 return true; 539 } 540 541 /* message building helper */ 542 static inline void *nl80211hdr_put(struct sk_buff *skb, u32 portid, u32 seq, 543 int flags, u8 cmd) 544 { 545 /* since there is no private header just add the generic one */ 546 return genlmsg_put(skb, portid, seq, &nl80211_fam, flags, cmd); 547 } 548 549 static int nl80211_msg_put_channel(struct sk_buff *msg, 550 struct ieee80211_channel *chan, 551 bool large) 552 { 553 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_FREQ, 554 chan->center_freq)) 555 goto nla_put_failure; 556 557 if ((chan->flags & IEEE80211_CHAN_DISABLED) && 558 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_DISABLED)) 559 goto nla_put_failure; 560 if ((chan->flags & IEEE80211_CHAN_PASSIVE_SCAN) && 561 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_PASSIVE_SCAN)) 562 goto nla_put_failure; 563 if ((chan->flags & IEEE80211_CHAN_NO_IBSS) && 564 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_IBSS)) 565 goto nla_put_failure; 566 if (chan->flags & IEEE80211_CHAN_RADAR) { 567 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_RADAR)) 568 goto nla_put_failure; 569 if (large) { 570 u32 time; 571 572 time = elapsed_jiffies_msecs(chan->dfs_state_entered); 573 574 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_STATE, 575 chan->dfs_state)) 576 goto nla_put_failure; 577 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_TIME, 578 time)) 579 goto nla_put_failure; 580 } 581 } 582 583 if (large) { 584 if ((chan->flags & IEEE80211_CHAN_NO_HT40MINUS) && 585 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_MINUS)) 586 goto nla_put_failure; 587 if ((chan->flags & IEEE80211_CHAN_NO_HT40PLUS) && 588 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_PLUS)) 589 goto nla_put_failure; 590 if ((chan->flags & IEEE80211_CHAN_NO_80MHZ) && 591 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_80MHZ)) 592 goto nla_put_failure; 593 if ((chan->flags & IEEE80211_CHAN_NO_160MHZ) && 594 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_160MHZ)) 595 goto nla_put_failure; 596 } 597 598 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_MAX_TX_POWER, 599 DBM_TO_MBM(chan->max_power))) 600 goto nla_put_failure; 601 602 return 0; 603 604 nla_put_failure: 605 return -ENOBUFS; 606 } 607 608 /* netlink command implementations */ 609 610 struct key_parse { 611 struct key_params p; 612 int idx; 613 int type; 614 bool def, defmgmt; 615 bool def_uni, def_multi; 616 }; 617 618 static int nl80211_parse_key_new(struct nlattr *key, struct key_parse *k) 619 { 620 struct nlattr *tb[NL80211_KEY_MAX + 1]; 621 int err = nla_parse_nested(tb, NL80211_KEY_MAX, key, 622 nl80211_key_policy); 623 if (err) 624 return err; 625 626 k->def = !!tb[NL80211_KEY_DEFAULT]; 627 k->defmgmt = !!tb[NL80211_KEY_DEFAULT_MGMT]; 628 629 if (k->def) { 630 k->def_uni = true; 631 k->def_multi = true; 632 } 633 if (k->defmgmt) 634 k->def_multi = true; 635 636 if (tb[NL80211_KEY_IDX]) 637 k->idx = nla_get_u8(tb[NL80211_KEY_IDX]); 638 639 if (tb[NL80211_KEY_DATA]) { 640 k->p.key = nla_data(tb[NL80211_KEY_DATA]); 641 k->p.key_len = nla_len(tb[NL80211_KEY_DATA]); 642 } 643 644 if (tb[NL80211_KEY_SEQ]) { 645 k->p.seq = nla_data(tb[NL80211_KEY_SEQ]); 646 k->p.seq_len = nla_len(tb[NL80211_KEY_SEQ]); 647 } 648 649 if (tb[NL80211_KEY_CIPHER]) 650 k->p.cipher = nla_get_u32(tb[NL80211_KEY_CIPHER]); 651 652 if (tb[NL80211_KEY_TYPE]) { 653 k->type = nla_get_u32(tb[NL80211_KEY_TYPE]); 654 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES) 655 return -EINVAL; 656 } 657 658 if (tb[NL80211_KEY_DEFAULT_TYPES]) { 659 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES]; 660 err = nla_parse_nested(kdt, NUM_NL80211_KEY_DEFAULT_TYPES - 1, 661 tb[NL80211_KEY_DEFAULT_TYPES], 662 nl80211_key_default_policy); 663 if (err) 664 return err; 665 666 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST]; 667 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST]; 668 } 669 670 return 0; 671 } 672 673 static int nl80211_parse_key_old(struct genl_info *info, struct key_parse *k) 674 { 675 if (info->attrs[NL80211_ATTR_KEY_DATA]) { 676 k->p.key = nla_data(info->attrs[NL80211_ATTR_KEY_DATA]); 677 k->p.key_len = nla_len(info->attrs[NL80211_ATTR_KEY_DATA]); 678 } 679 680 if (info->attrs[NL80211_ATTR_KEY_SEQ]) { 681 k->p.seq = nla_data(info->attrs[NL80211_ATTR_KEY_SEQ]); 682 k->p.seq_len = nla_len(info->attrs[NL80211_ATTR_KEY_SEQ]); 683 } 684 685 if (info->attrs[NL80211_ATTR_KEY_IDX]) 686 k->idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]); 687 688 if (info->attrs[NL80211_ATTR_KEY_CIPHER]) 689 k->p.cipher = nla_get_u32(info->attrs[NL80211_ATTR_KEY_CIPHER]); 690 691 k->def = !!info->attrs[NL80211_ATTR_KEY_DEFAULT]; 692 k->defmgmt = !!info->attrs[NL80211_ATTR_KEY_DEFAULT_MGMT]; 693 694 if (k->def) { 695 k->def_uni = true; 696 k->def_multi = true; 697 } 698 if (k->defmgmt) 699 k->def_multi = true; 700 701 if (info->attrs[NL80211_ATTR_KEY_TYPE]) { 702 k->type = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]); 703 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES) 704 return -EINVAL; 705 } 706 707 if (info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES]) { 708 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES]; 709 int err = nla_parse_nested( 710 kdt, NUM_NL80211_KEY_DEFAULT_TYPES - 1, 711 info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES], 712 nl80211_key_default_policy); 713 if (err) 714 return err; 715 716 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST]; 717 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST]; 718 } 719 720 return 0; 721 } 722 723 static int nl80211_parse_key(struct genl_info *info, struct key_parse *k) 724 { 725 int err; 726 727 memset(k, 0, sizeof(*k)); 728 k->idx = -1; 729 k->type = -1; 730 731 if (info->attrs[NL80211_ATTR_KEY]) 732 err = nl80211_parse_key_new(info->attrs[NL80211_ATTR_KEY], k); 733 else 734 err = nl80211_parse_key_old(info, k); 735 736 if (err) 737 return err; 738 739 if (k->def && k->defmgmt) 740 return -EINVAL; 741 742 if (k->defmgmt) { 743 if (k->def_uni || !k->def_multi) 744 return -EINVAL; 745 } 746 747 if (k->idx != -1) { 748 if (k->defmgmt) { 749 if (k->idx < 4 || k->idx > 5) 750 return -EINVAL; 751 } else if (k->def) { 752 if (k->idx < 0 || k->idx > 3) 753 return -EINVAL; 754 } else { 755 if (k->idx < 0 || k->idx > 5) 756 return -EINVAL; 757 } 758 } 759 760 return 0; 761 } 762 763 static struct cfg80211_cached_keys * 764 nl80211_parse_connkeys(struct cfg80211_registered_device *rdev, 765 struct nlattr *keys, bool *no_ht) 766 { 767 struct key_parse parse; 768 struct nlattr *key; 769 struct cfg80211_cached_keys *result; 770 int rem, err, def = 0; 771 772 result = kzalloc(sizeof(*result), GFP_KERNEL); 773 if (!result) 774 return ERR_PTR(-ENOMEM); 775 776 result->def = -1; 777 result->defmgmt = -1; 778 779 nla_for_each_nested(key, keys, rem) { 780 memset(&parse, 0, sizeof(parse)); 781 parse.idx = -1; 782 783 err = nl80211_parse_key_new(key, &parse); 784 if (err) 785 goto error; 786 err = -EINVAL; 787 if (!parse.p.key) 788 goto error; 789 if (parse.idx < 0 || parse.idx > 4) 790 goto error; 791 if (parse.def) { 792 if (def) 793 goto error; 794 def = 1; 795 result->def = parse.idx; 796 if (!parse.def_uni || !parse.def_multi) 797 goto error; 798 } else if (parse.defmgmt) 799 goto error; 800 err = cfg80211_validate_key_settings(rdev, &parse.p, 801 parse.idx, false, NULL); 802 if (err) 803 goto error; 804 result->params[parse.idx].cipher = parse.p.cipher; 805 result->params[parse.idx].key_len = parse.p.key_len; 806 result->params[parse.idx].key = result->data[parse.idx]; 807 memcpy(result->data[parse.idx], parse.p.key, parse.p.key_len); 808 809 if (parse.p.cipher == WLAN_CIPHER_SUITE_WEP40 || 810 parse.p.cipher == WLAN_CIPHER_SUITE_WEP104) { 811 if (no_ht) 812 *no_ht = true; 813 } 814 } 815 816 return result; 817 error: 818 kfree(result); 819 return ERR_PTR(err); 820 } 821 822 static int nl80211_key_allowed(struct wireless_dev *wdev) 823 { 824 ASSERT_WDEV_LOCK(wdev); 825 826 switch (wdev->iftype) { 827 case NL80211_IFTYPE_AP: 828 case NL80211_IFTYPE_AP_VLAN: 829 case NL80211_IFTYPE_P2P_GO: 830 case NL80211_IFTYPE_MESH_POINT: 831 break; 832 case NL80211_IFTYPE_ADHOC: 833 if (!wdev->current_bss) 834 return -ENOLINK; 835 break; 836 case NL80211_IFTYPE_STATION: 837 case NL80211_IFTYPE_P2P_CLIENT: 838 if (wdev->sme_state != CFG80211_SME_CONNECTED) 839 return -ENOLINK; 840 break; 841 default: 842 return -EINVAL; 843 } 844 845 return 0; 846 } 847 848 static int nl80211_put_iftypes(struct sk_buff *msg, u32 attr, u16 ifmodes) 849 { 850 struct nlattr *nl_modes = nla_nest_start(msg, attr); 851 int i; 852 853 if (!nl_modes) 854 goto nla_put_failure; 855 856 i = 0; 857 while (ifmodes) { 858 if ((ifmodes & 1) && nla_put_flag(msg, i)) 859 goto nla_put_failure; 860 ifmodes >>= 1; 861 i++; 862 } 863 864 nla_nest_end(msg, nl_modes); 865 return 0; 866 867 nla_put_failure: 868 return -ENOBUFS; 869 } 870 871 static int nl80211_put_iface_combinations(struct wiphy *wiphy, 872 struct sk_buff *msg, 873 bool large) 874 { 875 struct nlattr *nl_combis; 876 int i, j; 877 878 nl_combis = nla_nest_start(msg, 879 NL80211_ATTR_INTERFACE_COMBINATIONS); 880 if (!nl_combis) 881 goto nla_put_failure; 882 883 for (i = 0; i < wiphy->n_iface_combinations; i++) { 884 const struct ieee80211_iface_combination *c; 885 struct nlattr *nl_combi, *nl_limits; 886 887 c = &wiphy->iface_combinations[i]; 888 889 nl_combi = nla_nest_start(msg, i + 1); 890 if (!nl_combi) 891 goto nla_put_failure; 892 893 nl_limits = nla_nest_start(msg, NL80211_IFACE_COMB_LIMITS); 894 if (!nl_limits) 895 goto nla_put_failure; 896 897 for (j = 0; j < c->n_limits; j++) { 898 struct nlattr *nl_limit; 899 900 nl_limit = nla_nest_start(msg, j + 1); 901 if (!nl_limit) 902 goto nla_put_failure; 903 if (nla_put_u32(msg, NL80211_IFACE_LIMIT_MAX, 904 c->limits[j].max)) 905 goto nla_put_failure; 906 if (nl80211_put_iftypes(msg, NL80211_IFACE_LIMIT_TYPES, 907 c->limits[j].types)) 908 goto nla_put_failure; 909 nla_nest_end(msg, nl_limit); 910 } 911 912 nla_nest_end(msg, nl_limits); 913 914 if (c->beacon_int_infra_match && 915 nla_put_flag(msg, NL80211_IFACE_COMB_STA_AP_BI_MATCH)) 916 goto nla_put_failure; 917 if (nla_put_u32(msg, NL80211_IFACE_COMB_NUM_CHANNELS, 918 c->num_different_channels) || 919 nla_put_u32(msg, NL80211_IFACE_COMB_MAXNUM, 920 c->max_interfaces)) 921 goto nla_put_failure; 922 if (large && 923 nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_WIDTHS, 924 c->radar_detect_widths)) 925 goto nla_put_failure; 926 927 nla_nest_end(msg, nl_combi); 928 } 929 930 nla_nest_end(msg, nl_combis); 931 932 return 0; 933 nla_put_failure: 934 return -ENOBUFS; 935 } 936 937 #ifdef CONFIG_PM 938 static int nl80211_send_wowlan_tcp_caps(struct cfg80211_registered_device *rdev, 939 struct sk_buff *msg) 940 { 941 const struct wiphy_wowlan_tcp_support *tcp = rdev->wiphy.wowlan.tcp; 942 struct nlattr *nl_tcp; 943 944 if (!tcp) 945 return 0; 946 947 nl_tcp = nla_nest_start(msg, NL80211_WOWLAN_TRIG_TCP_CONNECTION); 948 if (!nl_tcp) 949 return -ENOBUFS; 950 951 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD, 952 tcp->data_payload_max)) 953 return -ENOBUFS; 954 955 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD, 956 tcp->data_payload_max)) 957 return -ENOBUFS; 958 959 if (tcp->seq && nla_put_flag(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ)) 960 return -ENOBUFS; 961 962 if (tcp->tok && nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN, 963 sizeof(*tcp->tok), tcp->tok)) 964 return -ENOBUFS; 965 966 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL, 967 tcp->data_interval_max)) 968 return -ENOBUFS; 969 970 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD, 971 tcp->wake_payload_max)) 972 return -ENOBUFS; 973 974 nla_nest_end(msg, nl_tcp); 975 return 0; 976 } 977 978 static int nl80211_send_wowlan(struct sk_buff *msg, 979 struct cfg80211_registered_device *dev, 980 bool large) 981 { 982 struct nlattr *nl_wowlan; 983 984 if (!dev->wiphy.wowlan.flags && !dev->wiphy.wowlan.n_patterns) 985 return 0; 986 987 nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS_SUPPORTED); 988 if (!nl_wowlan) 989 return -ENOBUFS; 990 991 if (((dev->wiphy.wowlan.flags & WIPHY_WOWLAN_ANY) && 992 nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) || 993 ((dev->wiphy.wowlan.flags & WIPHY_WOWLAN_DISCONNECT) && 994 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) || 995 ((dev->wiphy.wowlan.flags & WIPHY_WOWLAN_MAGIC_PKT) && 996 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) || 997 ((dev->wiphy.wowlan.flags & WIPHY_WOWLAN_SUPPORTS_GTK_REKEY) && 998 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED)) || 999 ((dev->wiphy.wowlan.flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE) && 1000 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) || 1001 ((dev->wiphy.wowlan.flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ) && 1002 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) || 1003 ((dev->wiphy.wowlan.flags & WIPHY_WOWLAN_4WAY_HANDSHAKE) && 1004 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) || 1005 ((dev->wiphy.wowlan.flags & WIPHY_WOWLAN_RFKILL_RELEASE) && 1006 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE))) 1007 return -ENOBUFS; 1008 1009 if (dev->wiphy.wowlan.n_patterns) { 1010 struct nl80211_wowlan_pattern_support pat = { 1011 .max_patterns = dev->wiphy.wowlan.n_patterns, 1012 .min_pattern_len = dev->wiphy.wowlan.pattern_min_len, 1013 .max_pattern_len = dev->wiphy.wowlan.pattern_max_len, 1014 .max_pkt_offset = dev->wiphy.wowlan.max_pkt_offset, 1015 }; 1016 1017 if (nla_put(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN, 1018 sizeof(pat), &pat)) 1019 return -ENOBUFS; 1020 } 1021 1022 if (large && nl80211_send_wowlan_tcp_caps(dev, msg)) 1023 return -ENOBUFS; 1024 1025 nla_nest_end(msg, nl_wowlan); 1026 1027 return 0; 1028 } 1029 #endif 1030 1031 static int nl80211_send_band_rateinfo(struct sk_buff *msg, 1032 struct ieee80211_supported_band *sband) 1033 { 1034 struct nlattr *nl_rates, *nl_rate; 1035 struct ieee80211_rate *rate; 1036 int i; 1037 1038 /* add HT info */ 1039 if (sband->ht_cap.ht_supported && 1040 (nla_put(msg, NL80211_BAND_ATTR_HT_MCS_SET, 1041 sizeof(sband->ht_cap.mcs), 1042 &sband->ht_cap.mcs) || 1043 nla_put_u16(msg, NL80211_BAND_ATTR_HT_CAPA, 1044 sband->ht_cap.cap) || 1045 nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_FACTOR, 1046 sband->ht_cap.ampdu_factor) || 1047 nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_DENSITY, 1048 sband->ht_cap.ampdu_density))) 1049 return -ENOBUFS; 1050 1051 /* add VHT info */ 1052 if (sband->vht_cap.vht_supported && 1053 (nla_put(msg, NL80211_BAND_ATTR_VHT_MCS_SET, 1054 sizeof(sband->vht_cap.vht_mcs), 1055 &sband->vht_cap.vht_mcs) || 1056 nla_put_u32(msg, NL80211_BAND_ATTR_VHT_CAPA, 1057 sband->vht_cap.cap))) 1058 return -ENOBUFS; 1059 1060 /* add bitrates */ 1061 nl_rates = nla_nest_start(msg, NL80211_BAND_ATTR_RATES); 1062 if (!nl_rates) 1063 return -ENOBUFS; 1064 1065 for (i = 0; i < sband->n_bitrates; i++) { 1066 nl_rate = nla_nest_start(msg, i); 1067 if (!nl_rate) 1068 return -ENOBUFS; 1069 1070 rate = &sband->bitrates[i]; 1071 if (nla_put_u32(msg, NL80211_BITRATE_ATTR_RATE, 1072 rate->bitrate)) 1073 return -ENOBUFS; 1074 if ((rate->flags & IEEE80211_RATE_SHORT_PREAMBLE) && 1075 nla_put_flag(msg, 1076 NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE)) 1077 return -ENOBUFS; 1078 1079 nla_nest_end(msg, nl_rate); 1080 } 1081 1082 nla_nest_end(msg, nl_rates); 1083 1084 return 0; 1085 } 1086 1087 static int 1088 nl80211_send_mgmt_stypes(struct sk_buff *msg, 1089 const struct ieee80211_txrx_stypes *mgmt_stypes) 1090 { 1091 u16 stypes; 1092 struct nlattr *nl_ftypes, *nl_ifs; 1093 enum nl80211_iftype ift; 1094 int i; 1095 1096 if (!mgmt_stypes) 1097 return 0; 1098 1099 nl_ifs = nla_nest_start(msg, NL80211_ATTR_TX_FRAME_TYPES); 1100 if (!nl_ifs) 1101 return -ENOBUFS; 1102 1103 for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) { 1104 nl_ftypes = nla_nest_start(msg, ift); 1105 if (!nl_ftypes) 1106 return -ENOBUFS; 1107 i = 0; 1108 stypes = mgmt_stypes[ift].tx; 1109 while (stypes) { 1110 if ((stypes & 1) && 1111 nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE, 1112 (i << 4) | IEEE80211_FTYPE_MGMT)) 1113 return -ENOBUFS; 1114 stypes >>= 1; 1115 i++; 1116 } 1117 nla_nest_end(msg, nl_ftypes); 1118 } 1119 1120 nla_nest_end(msg, nl_ifs); 1121 1122 nl_ifs = nla_nest_start(msg, NL80211_ATTR_RX_FRAME_TYPES); 1123 if (!nl_ifs) 1124 return -ENOBUFS; 1125 1126 for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) { 1127 nl_ftypes = nla_nest_start(msg, ift); 1128 if (!nl_ftypes) 1129 return -ENOBUFS; 1130 i = 0; 1131 stypes = mgmt_stypes[ift].rx; 1132 while (stypes) { 1133 if ((stypes & 1) && 1134 nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE, 1135 (i << 4) | IEEE80211_FTYPE_MGMT)) 1136 return -ENOBUFS; 1137 stypes >>= 1; 1138 i++; 1139 } 1140 nla_nest_end(msg, nl_ftypes); 1141 } 1142 nla_nest_end(msg, nl_ifs); 1143 1144 return 0; 1145 } 1146 1147 static int nl80211_send_wiphy(struct cfg80211_registered_device *dev, 1148 struct sk_buff *msg, u32 portid, u32 seq, 1149 int flags, bool split, long *split_start, 1150 long *band_start, long *chan_start) 1151 { 1152 void *hdr; 1153 struct nlattr *nl_bands, *nl_band; 1154 struct nlattr *nl_freqs, *nl_freq; 1155 struct nlattr *nl_cmds; 1156 enum ieee80211_band band; 1157 struct ieee80211_channel *chan; 1158 int i; 1159 const struct ieee80211_txrx_stypes *mgmt_stypes = 1160 dev->wiphy.mgmt_stypes; 1161 long start = 0, start_chan = 0, start_band = 0; 1162 u32 features; 1163 1164 hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_WIPHY); 1165 if (!hdr) 1166 return -ENOBUFS; 1167 1168 /* allow always using the variables */ 1169 if (!split) { 1170 split_start = &start; 1171 band_start = &start_band; 1172 chan_start = &start_chan; 1173 } 1174 1175 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, dev->wiphy_idx) || 1176 nla_put_string(msg, NL80211_ATTR_WIPHY_NAME, 1177 wiphy_name(&dev->wiphy)) || 1178 nla_put_u32(msg, NL80211_ATTR_GENERATION, 1179 cfg80211_rdev_list_generation)) 1180 goto nla_put_failure; 1181 1182 switch (*split_start) { 1183 case 0: 1184 if (nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_SHORT, 1185 dev->wiphy.retry_short) || 1186 nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_LONG, 1187 dev->wiphy.retry_long) || 1188 nla_put_u32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD, 1189 dev->wiphy.frag_threshold) || 1190 nla_put_u32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD, 1191 dev->wiphy.rts_threshold) || 1192 nla_put_u8(msg, NL80211_ATTR_WIPHY_COVERAGE_CLASS, 1193 dev->wiphy.coverage_class) || 1194 nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCAN_SSIDS, 1195 dev->wiphy.max_scan_ssids) || 1196 nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS, 1197 dev->wiphy.max_sched_scan_ssids) || 1198 nla_put_u16(msg, NL80211_ATTR_MAX_SCAN_IE_LEN, 1199 dev->wiphy.max_scan_ie_len) || 1200 nla_put_u16(msg, NL80211_ATTR_MAX_SCHED_SCAN_IE_LEN, 1201 dev->wiphy.max_sched_scan_ie_len) || 1202 nla_put_u8(msg, NL80211_ATTR_MAX_MATCH_SETS, 1203 dev->wiphy.max_match_sets)) 1204 goto nla_put_failure; 1205 1206 if ((dev->wiphy.flags & WIPHY_FLAG_IBSS_RSN) && 1207 nla_put_flag(msg, NL80211_ATTR_SUPPORT_IBSS_RSN)) 1208 goto nla_put_failure; 1209 if ((dev->wiphy.flags & WIPHY_FLAG_MESH_AUTH) && 1210 nla_put_flag(msg, NL80211_ATTR_SUPPORT_MESH_AUTH)) 1211 goto nla_put_failure; 1212 if ((dev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) && 1213 nla_put_flag(msg, NL80211_ATTR_SUPPORT_AP_UAPSD)) 1214 goto nla_put_failure; 1215 if ((dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_FW_ROAM) && 1216 nla_put_flag(msg, NL80211_ATTR_ROAM_SUPPORT)) 1217 goto nla_put_failure; 1218 if ((dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) && 1219 nla_put_flag(msg, NL80211_ATTR_TDLS_SUPPORT)) 1220 goto nla_put_failure; 1221 if ((dev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP) && 1222 nla_put_flag(msg, NL80211_ATTR_TDLS_EXTERNAL_SETUP)) 1223 goto nla_put_failure; 1224 1225 (*split_start)++; 1226 if (split) 1227 break; 1228 case 1: 1229 if (nla_put(msg, NL80211_ATTR_CIPHER_SUITES, 1230 sizeof(u32) * dev->wiphy.n_cipher_suites, 1231 dev->wiphy.cipher_suites)) 1232 goto nla_put_failure; 1233 1234 if (nla_put_u8(msg, NL80211_ATTR_MAX_NUM_PMKIDS, 1235 dev->wiphy.max_num_pmkids)) 1236 goto nla_put_failure; 1237 1238 if ((dev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) && 1239 nla_put_flag(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE)) 1240 goto nla_put_failure; 1241 1242 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_TX, 1243 dev->wiphy.available_antennas_tx) || 1244 nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_RX, 1245 dev->wiphy.available_antennas_rx)) 1246 goto nla_put_failure; 1247 1248 if ((dev->wiphy.flags & WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD) && 1249 nla_put_u32(msg, NL80211_ATTR_PROBE_RESP_OFFLOAD, 1250 dev->wiphy.probe_resp_offload)) 1251 goto nla_put_failure; 1252 1253 if ((dev->wiphy.available_antennas_tx || 1254 dev->wiphy.available_antennas_rx) && 1255 dev->ops->get_antenna) { 1256 u32 tx_ant = 0, rx_ant = 0; 1257 int res; 1258 res = rdev_get_antenna(dev, &tx_ant, &rx_ant); 1259 if (!res) { 1260 if (nla_put_u32(msg, 1261 NL80211_ATTR_WIPHY_ANTENNA_TX, 1262 tx_ant) || 1263 nla_put_u32(msg, 1264 NL80211_ATTR_WIPHY_ANTENNA_RX, 1265 rx_ant)) 1266 goto nla_put_failure; 1267 } 1268 } 1269 1270 (*split_start)++; 1271 if (split) 1272 break; 1273 case 2: 1274 if (nl80211_put_iftypes(msg, NL80211_ATTR_SUPPORTED_IFTYPES, 1275 dev->wiphy.interface_modes)) 1276 goto nla_put_failure; 1277 (*split_start)++; 1278 if (split) 1279 break; 1280 case 3: 1281 nl_bands = nla_nest_start(msg, NL80211_ATTR_WIPHY_BANDS); 1282 if (!nl_bands) 1283 goto nla_put_failure; 1284 1285 for (band = *band_start; band < IEEE80211_NUM_BANDS; band++) { 1286 struct ieee80211_supported_band *sband; 1287 1288 sband = dev->wiphy.bands[band]; 1289 1290 if (!sband) 1291 continue; 1292 1293 nl_band = nla_nest_start(msg, band); 1294 if (!nl_band) 1295 goto nla_put_failure; 1296 1297 switch (*chan_start) { 1298 case 0: 1299 if (nl80211_send_band_rateinfo(msg, sband)) 1300 goto nla_put_failure; 1301 (*chan_start)++; 1302 if (split) 1303 break; 1304 default: 1305 /* add frequencies */ 1306 nl_freqs = nla_nest_start( 1307 msg, NL80211_BAND_ATTR_FREQS); 1308 if (!nl_freqs) 1309 goto nla_put_failure; 1310 1311 for (i = *chan_start - 1; 1312 i < sband->n_channels; 1313 i++) { 1314 nl_freq = nla_nest_start(msg, i); 1315 if (!nl_freq) 1316 goto nla_put_failure; 1317 1318 chan = &sband->channels[i]; 1319 1320 if (nl80211_msg_put_channel(msg, chan, 1321 split)) 1322 goto nla_put_failure; 1323 1324 nla_nest_end(msg, nl_freq); 1325 if (split) 1326 break; 1327 } 1328 if (i < sband->n_channels) 1329 *chan_start = i + 2; 1330 else 1331 *chan_start = 0; 1332 nla_nest_end(msg, nl_freqs); 1333 } 1334 1335 nla_nest_end(msg, nl_band); 1336 1337 if (split) { 1338 /* start again here */ 1339 if (*chan_start) 1340 band--; 1341 break; 1342 } 1343 } 1344 nla_nest_end(msg, nl_bands); 1345 1346 if (band < IEEE80211_NUM_BANDS) 1347 *band_start = band + 1; 1348 else 1349 *band_start = 0; 1350 1351 /* if bands & channels are done, continue outside */ 1352 if (*band_start == 0 && *chan_start == 0) 1353 (*split_start)++; 1354 if (split) 1355 break; 1356 case 4: 1357 nl_cmds = nla_nest_start(msg, NL80211_ATTR_SUPPORTED_COMMANDS); 1358 if (!nl_cmds) 1359 goto nla_put_failure; 1360 1361 i = 0; 1362 #define CMD(op, n) \ 1363 do { \ 1364 if (dev->ops->op) { \ 1365 i++; \ 1366 if (nla_put_u32(msg, i, NL80211_CMD_ ## n)) \ 1367 goto nla_put_failure; \ 1368 } \ 1369 } while (0) 1370 1371 CMD(add_virtual_intf, NEW_INTERFACE); 1372 CMD(change_virtual_intf, SET_INTERFACE); 1373 CMD(add_key, NEW_KEY); 1374 CMD(start_ap, START_AP); 1375 CMD(add_station, NEW_STATION); 1376 CMD(add_mpath, NEW_MPATH); 1377 CMD(update_mesh_config, SET_MESH_CONFIG); 1378 CMD(change_bss, SET_BSS); 1379 CMD(auth, AUTHENTICATE); 1380 CMD(assoc, ASSOCIATE); 1381 CMD(deauth, DEAUTHENTICATE); 1382 CMD(disassoc, DISASSOCIATE); 1383 CMD(join_ibss, JOIN_IBSS); 1384 CMD(join_mesh, JOIN_MESH); 1385 CMD(set_pmksa, SET_PMKSA); 1386 CMD(del_pmksa, DEL_PMKSA); 1387 CMD(flush_pmksa, FLUSH_PMKSA); 1388 if (dev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL) 1389 CMD(remain_on_channel, REMAIN_ON_CHANNEL); 1390 CMD(set_bitrate_mask, SET_TX_BITRATE_MASK); 1391 CMD(mgmt_tx, FRAME); 1392 CMD(mgmt_tx_cancel_wait, FRAME_WAIT_CANCEL); 1393 if (dev->wiphy.flags & WIPHY_FLAG_NETNS_OK) { 1394 i++; 1395 if (nla_put_u32(msg, i, NL80211_CMD_SET_WIPHY_NETNS)) 1396 goto nla_put_failure; 1397 } 1398 if (dev->ops->set_monitor_channel || dev->ops->start_ap || 1399 dev->ops->join_mesh) { 1400 i++; 1401 if (nla_put_u32(msg, i, NL80211_CMD_SET_CHANNEL)) 1402 goto nla_put_failure; 1403 } 1404 CMD(set_wds_peer, SET_WDS_PEER); 1405 if (dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) { 1406 CMD(tdls_mgmt, TDLS_MGMT); 1407 CMD(tdls_oper, TDLS_OPER); 1408 } 1409 if (dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) 1410 CMD(sched_scan_start, START_SCHED_SCAN); 1411 CMD(probe_client, PROBE_CLIENT); 1412 CMD(set_noack_map, SET_NOACK_MAP); 1413 if (dev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS) { 1414 i++; 1415 if (nla_put_u32(msg, i, NL80211_CMD_REGISTER_BEACONS)) 1416 goto nla_put_failure; 1417 } 1418 CMD(start_p2p_device, START_P2P_DEVICE); 1419 CMD(set_mcast_rate, SET_MCAST_RATE); 1420 1421 #ifdef CONFIG_NL80211_TESTMODE 1422 CMD(testmode_cmd, TESTMODE); 1423 #endif 1424 1425 #undef CMD 1426 1427 if (dev->ops->connect || dev->ops->auth) { 1428 i++; 1429 if (nla_put_u32(msg, i, NL80211_CMD_CONNECT)) 1430 goto nla_put_failure; 1431 } 1432 1433 if (dev->ops->disconnect || dev->ops->deauth) { 1434 i++; 1435 if (nla_put_u32(msg, i, NL80211_CMD_DISCONNECT)) 1436 goto nla_put_failure; 1437 } 1438 1439 nla_nest_end(msg, nl_cmds); 1440 (*split_start)++; 1441 if (split) 1442 break; 1443 case 5: 1444 if (dev->ops->remain_on_channel && 1445 (dev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL) && 1446 nla_put_u32(msg, 1447 NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION, 1448 dev->wiphy.max_remain_on_channel_duration)) 1449 goto nla_put_failure; 1450 1451 if ((dev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX) && 1452 nla_put_flag(msg, NL80211_ATTR_OFFCHANNEL_TX_OK)) 1453 goto nla_put_failure; 1454 1455 if (nl80211_send_mgmt_stypes(msg, mgmt_stypes)) 1456 goto nla_put_failure; 1457 (*split_start)++; 1458 if (split) 1459 break; 1460 case 6: 1461 #ifdef CONFIG_PM 1462 if (nl80211_send_wowlan(msg, dev, split)) 1463 goto nla_put_failure; 1464 (*split_start)++; 1465 if (split) 1466 break; 1467 #else 1468 (*split_start)++; 1469 #endif 1470 case 7: 1471 if (nl80211_put_iftypes(msg, NL80211_ATTR_SOFTWARE_IFTYPES, 1472 dev->wiphy.software_iftypes)) 1473 goto nla_put_failure; 1474 1475 if (nl80211_put_iface_combinations(&dev->wiphy, msg, split)) 1476 goto nla_put_failure; 1477 1478 (*split_start)++; 1479 if (split) 1480 break; 1481 case 8: 1482 if ((dev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME) && 1483 nla_put_u32(msg, NL80211_ATTR_DEVICE_AP_SME, 1484 dev->wiphy.ap_sme_capa)) 1485 goto nla_put_failure; 1486 1487 features = dev->wiphy.features; 1488 /* 1489 * We can only add the per-channel limit information if the 1490 * dump is split, otherwise it makes it too big. Therefore 1491 * only advertise it in that case. 1492 */ 1493 if (split) 1494 features |= NL80211_FEATURE_ADVERTISE_CHAN_LIMITS; 1495 if (nla_put_u32(msg, NL80211_ATTR_FEATURE_FLAGS, features)) 1496 goto nla_put_failure; 1497 1498 if (dev->wiphy.ht_capa_mod_mask && 1499 nla_put(msg, NL80211_ATTR_HT_CAPABILITY_MASK, 1500 sizeof(*dev->wiphy.ht_capa_mod_mask), 1501 dev->wiphy.ht_capa_mod_mask)) 1502 goto nla_put_failure; 1503 1504 if (dev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME && 1505 dev->wiphy.max_acl_mac_addrs && 1506 nla_put_u32(msg, NL80211_ATTR_MAC_ACL_MAX, 1507 dev->wiphy.max_acl_mac_addrs)) 1508 goto nla_put_failure; 1509 1510 /* 1511 * Any information below this point is only available to 1512 * applications that can deal with it being split. This 1513 * helps ensure that newly added capabilities don't break 1514 * older tools by overrunning their buffers. 1515 * 1516 * We still increment split_start so that in the split 1517 * case we'll continue with more data in the next round, 1518 * but break unconditionally so unsplit data stops here. 1519 */ 1520 (*split_start)++; 1521 break; 1522 case 9: 1523 if (dev->wiphy.extended_capabilities && 1524 (nla_put(msg, NL80211_ATTR_EXT_CAPA, 1525 dev->wiphy.extended_capabilities_len, 1526 dev->wiphy.extended_capabilities) || 1527 nla_put(msg, NL80211_ATTR_EXT_CAPA_MASK, 1528 dev->wiphy.extended_capabilities_len, 1529 dev->wiphy.extended_capabilities_mask))) 1530 goto nla_put_failure; 1531 1532 if (dev->wiphy.vht_capa_mod_mask && 1533 nla_put(msg, NL80211_ATTR_VHT_CAPABILITY_MASK, 1534 sizeof(*dev->wiphy.vht_capa_mod_mask), 1535 dev->wiphy.vht_capa_mod_mask)) 1536 goto nla_put_failure; 1537 1538 /* done */ 1539 *split_start = 0; 1540 break; 1541 } 1542 return genlmsg_end(msg, hdr); 1543 1544 nla_put_failure: 1545 genlmsg_cancel(msg, hdr); 1546 return -EMSGSIZE; 1547 } 1548 1549 static int nl80211_dump_wiphy(struct sk_buff *skb, struct netlink_callback *cb) 1550 { 1551 int idx = 0, ret; 1552 int start = cb->args[0]; 1553 struct cfg80211_registered_device *dev; 1554 s64 filter_wiphy = -1; 1555 bool split = false; 1556 struct nlattr **tb = nl80211_fam.attrbuf; 1557 int res; 1558 1559 mutex_lock(&cfg80211_mutex); 1560 res = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize, 1561 tb, nl80211_fam.maxattr, nl80211_policy); 1562 if (res == 0) { 1563 split = tb[NL80211_ATTR_SPLIT_WIPHY_DUMP]; 1564 if (tb[NL80211_ATTR_WIPHY]) 1565 filter_wiphy = nla_get_u32(tb[NL80211_ATTR_WIPHY]); 1566 if (tb[NL80211_ATTR_WDEV]) 1567 filter_wiphy = nla_get_u64(tb[NL80211_ATTR_WDEV]) >> 32; 1568 if (tb[NL80211_ATTR_IFINDEX]) { 1569 struct net_device *netdev; 1570 int ifidx = nla_get_u32(tb[NL80211_ATTR_IFINDEX]); 1571 1572 netdev = dev_get_by_index(sock_net(skb->sk), ifidx); 1573 if (!netdev) { 1574 mutex_unlock(&cfg80211_mutex); 1575 return -ENODEV; 1576 } 1577 if (netdev->ieee80211_ptr) { 1578 dev = wiphy_to_dev( 1579 netdev->ieee80211_ptr->wiphy); 1580 filter_wiphy = dev->wiphy_idx; 1581 } 1582 dev_put(netdev); 1583 } 1584 } 1585 1586 list_for_each_entry(dev, &cfg80211_rdev_list, list) { 1587 if (!net_eq(wiphy_net(&dev->wiphy), sock_net(skb->sk))) 1588 continue; 1589 if (++idx <= start) 1590 continue; 1591 if (filter_wiphy != -1 && dev->wiphy_idx != filter_wiphy) 1592 continue; 1593 /* attempt to fit multiple wiphy data chunks into the skb */ 1594 do { 1595 ret = nl80211_send_wiphy(dev, skb, 1596 NETLINK_CB(cb->skb).portid, 1597 cb->nlh->nlmsg_seq, 1598 NLM_F_MULTI, 1599 split, &cb->args[1], 1600 &cb->args[2], 1601 &cb->args[3]); 1602 if (ret < 0) { 1603 /* 1604 * If sending the wiphy data didn't fit (ENOBUFS 1605 * or EMSGSIZE returned), this SKB is still 1606 * empty (so it's not too big because another 1607 * wiphy dataset is already in the skb) and 1608 * we've not tried to adjust the dump allocation 1609 * yet ... then adjust the alloc size to be 1610 * bigger, and return 1 but with the empty skb. 1611 * This results in an empty message being RX'ed 1612 * in userspace, but that is ignored. 1613 * 1614 * We can then retry with the larger buffer. 1615 */ 1616 if ((ret == -ENOBUFS || ret == -EMSGSIZE) && 1617 !skb->len && 1618 cb->min_dump_alloc < 4096) { 1619 cb->min_dump_alloc = 4096; 1620 mutex_unlock(&cfg80211_mutex); 1621 return 1; 1622 } 1623 idx--; 1624 break; 1625 } 1626 } while (cb->args[1] > 0); 1627 break; 1628 } 1629 mutex_unlock(&cfg80211_mutex); 1630 1631 cb->args[0] = idx; 1632 1633 return skb->len; 1634 } 1635 1636 static int nl80211_get_wiphy(struct sk_buff *skb, struct genl_info *info) 1637 { 1638 struct sk_buff *msg; 1639 struct cfg80211_registered_device *dev = info->user_ptr[0]; 1640 1641 msg = nlmsg_new(4096, GFP_KERNEL); 1642 if (!msg) 1643 return -ENOMEM; 1644 1645 if (nl80211_send_wiphy(dev, msg, info->snd_portid, info->snd_seq, 0, 1646 false, NULL, NULL, NULL) < 0) { 1647 nlmsg_free(msg); 1648 return -ENOBUFS; 1649 } 1650 1651 return genlmsg_reply(msg, info); 1652 } 1653 1654 static const struct nla_policy txq_params_policy[NL80211_TXQ_ATTR_MAX + 1] = { 1655 [NL80211_TXQ_ATTR_QUEUE] = { .type = NLA_U8 }, 1656 [NL80211_TXQ_ATTR_TXOP] = { .type = NLA_U16 }, 1657 [NL80211_TXQ_ATTR_CWMIN] = { .type = NLA_U16 }, 1658 [NL80211_TXQ_ATTR_CWMAX] = { .type = NLA_U16 }, 1659 [NL80211_TXQ_ATTR_AIFS] = { .type = NLA_U8 }, 1660 }; 1661 1662 static int parse_txq_params(struct nlattr *tb[], 1663 struct ieee80211_txq_params *txq_params) 1664 { 1665 if (!tb[NL80211_TXQ_ATTR_AC] || !tb[NL80211_TXQ_ATTR_TXOP] || 1666 !tb[NL80211_TXQ_ATTR_CWMIN] || !tb[NL80211_TXQ_ATTR_CWMAX] || 1667 !tb[NL80211_TXQ_ATTR_AIFS]) 1668 return -EINVAL; 1669 1670 txq_params->ac = nla_get_u8(tb[NL80211_TXQ_ATTR_AC]); 1671 txq_params->txop = nla_get_u16(tb[NL80211_TXQ_ATTR_TXOP]); 1672 txq_params->cwmin = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMIN]); 1673 txq_params->cwmax = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMAX]); 1674 txq_params->aifs = nla_get_u8(tb[NL80211_TXQ_ATTR_AIFS]); 1675 1676 if (txq_params->ac >= NL80211_NUM_ACS) 1677 return -EINVAL; 1678 1679 return 0; 1680 } 1681 1682 static bool nl80211_can_set_dev_channel(struct wireless_dev *wdev) 1683 { 1684 /* 1685 * You can only set the channel explicitly for WDS interfaces, 1686 * all others have their channel managed via their respective 1687 * "establish a connection" command (connect, join, ...) 1688 * 1689 * For AP/GO and mesh mode, the channel can be set with the 1690 * channel userspace API, but is only stored and passed to the 1691 * low-level driver when the AP starts or the mesh is joined. 1692 * This is for backward compatibility, userspace can also give 1693 * the channel in the start-ap or join-mesh commands instead. 1694 * 1695 * Monitors are special as they are normally slaved to 1696 * whatever else is going on, so they have their own special 1697 * operation to set the monitor channel if possible. 1698 */ 1699 return !wdev || 1700 wdev->iftype == NL80211_IFTYPE_AP || 1701 wdev->iftype == NL80211_IFTYPE_MESH_POINT || 1702 wdev->iftype == NL80211_IFTYPE_MONITOR || 1703 wdev->iftype == NL80211_IFTYPE_P2P_GO; 1704 } 1705 1706 static int nl80211_parse_chandef(struct cfg80211_registered_device *rdev, 1707 struct genl_info *info, 1708 struct cfg80211_chan_def *chandef) 1709 { 1710 u32 control_freq; 1711 1712 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ]) 1713 return -EINVAL; 1714 1715 control_freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]); 1716 1717 chandef->chan = ieee80211_get_channel(&rdev->wiphy, control_freq); 1718 chandef->width = NL80211_CHAN_WIDTH_20_NOHT; 1719 chandef->center_freq1 = control_freq; 1720 chandef->center_freq2 = 0; 1721 1722 /* Primary channel not allowed */ 1723 if (!chandef->chan || chandef->chan->flags & IEEE80211_CHAN_DISABLED) 1724 return -EINVAL; 1725 1726 if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) { 1727 enum nl80211_channel_type chantype; 1728 1729 chantype = nla_get_u32( 1730 info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]); 1731 1732 switch (chantype) { 1733 case NL80211_CHAN_NO_HT: 1734 case NL80211_CHAN_HT20: 1735 case NL80211_CHAN_HT40PLUS: 1736 case NL80211_CHAN_HT40MINUS: 1737 cfg80211_chandef_create(chandef, chandef->chan, 1738 chantype); 1739 break; 1740 default: 1741 return -EINVAL; 1742 } 1743 } else if (info->attrs[NL80211_ATTR_CHANNEL_WIDTH]) { 1744 chandef->width = 1745 nla_get_u32(info->attrs[NL80211_ATTR_CHANNEL_WIDTH]); 1746 if (info->attrs[NL80211_ATTR_CENTER_FREQ1]) 1747 chandef->center_freq1 = 1748 nla_get_u32( 1749 info->attrs[NL80211_ATTR_CENTER_FREQ1]); 1750 if (info->attrs[NL80211_ATTR_CENTER_FREQ2]) 1751 chandef->center_freq2 = 1752 nla_get_u32( 1753 info->attrs[NL80211_ATTR_CENTER_FREQ2]); 1754 } 1755 1756 if (!cfg80211_chandef_valid(chandef)) 1757 return -EINVAL; 1758 1759 if (!cfg80211_chandef_usable(&rdev->wiphy, chandef, 1760 IEEE80211_CHAN_DISABLED)) 1761 return -EINVAL; 1762 1763 return 0; 1764 } 1765 1766 static int __nl80211_set_channel(struct cfg80211_registered_device *rdev, 1767 struct wireless_dev *wdev, 1768 struct genl_info *info) 1769 { 1770 struct cfg80211_chan_def chandef; 1771 int result; 1772 enum nl80211_iftype iftype = NL80211_IFTYPE_MONITOR; 1773 1774 if (wdev) 1775 iftype = wdev->iftype; 1776 1777 if (!nl80211_can_set_dev_channel(wdev)) 1778 return -EOPNOTSUPP; 1779 1780 result = nl80211_parse_chandef(rdev, info, &chandef); 1781 if (result) 1782 return result; 1783 1784 mutex_lock(&rdev->devlist_mtx); 1785 switch (iftype) { 1786 case NL80211_IFTYPE_AP: 1787 case NL80211_IFTYPE_P2P_GO: 1788 if (wdev->beacon_interval) { 1789 result = -EBUSY; 1790 break; 1791 } 1792 if (!cfg80211_reg_can_beacon(&rdev->wiphy, &chandef)) { 1793 result = -EINVAL; 1794 break; 1795 } 1796 wdev->preset_chandef = chandef; 1797 result = 0; 1798 break; 1799 case NL80211_IFTYPE_MESH_POINT: 1800 result = cfg80211_set_mesh_channel(rdev, wdev, &chandef); 1801 break; 1802 case NL80211_IFTYPE_MONITOR: 1803 result = cfg80211_set_monitor_channel(rdev, &chandef); 1804 break; 1805 default: 1806 result = -EINVAL; 1807 } 1808 mutex_unlock(&rdev->devlist_mtx); 1809 1810 return result; 1811 } 1812 1813 static int nl80211_set_channel(struct sk_buff *skb, struct genl_info *info) 1814 { 1815 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 1816 struct net_device *netdev = info->user_ptr[1]; 1817 1818 return __nl80211_set_channel(rdev, netdev->ieee80211_ptr, info); 1819 } 1820 1821 static int nl80211_set_wds_peer(struct sk_buff *skb, struct genl_info *info) 1822 { 1823 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 1824 struct net_device *dev = info->user_ptr[1]; 1825 struct wireless_dev *wdev = dev->ieee80211_ptr; 1826 const u8 *bssid; 1827 1828 if (!info->attrs[NL80211_ATTR_MAC]) 1829 return -EINVAL; 1830 1831 if (netif_running(dev)) 1832 return -EBUSY; 1833 1834 if (!rdev->ops->set_wds_peer) 1835 return -EOPNOTSUPP; 1836 1837 if (wdev->iftype != NL80211_IFTYPE_WDS) 1838 return -EOPNOTSUPP; 1839 1840 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]); 1841 return rdev_set_wds_peer(rdev, dev, bssid); 1842 } 1843 1844 1845 static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info) 1846 { 1847 struct cfg80211_registered_device *rdev; 1848 struct net_device *netdev = NULL; 1849 struct wireless_dev *wdev; 1850 int result = 0, rem_txq_params = 0; 1851 struct nlattr *nl_txq_params; 1852 u32 changed; 1853 u8 retry_short = 0, retry_long = 0; 1854 u32 frag_threshold = 0, rts_threshold = 0; 1855 u8 coverage_class = 0; 1856 1857 /* 1858 * Try to find the wiphy and netdev. Normally this 1859 * function shouldn't need the netdev, but this is 1860 * done for backward compatibility -- previously 1861 * setting the channel was done per wiphy, but now 1862 * it is per netdev. Previous userland like hostapd 1863 * also passed a netdev to set_wiphy, so that it is 1864 * possible to let that go to the right netdev! 1865 */ 1866 mutex_lock(&cfg80211_mutex); 1867 1868 if (info->attrs[NL80211_ATTR_IFINDEX]) { 1869 int ifindex = nla_get_u32(info->attrs[NL80211_ATTR_IFINDEX]); 1870 1871 netdev = dev_get_by_index(genl_info_net(info), ifindex); 1872 if (netdev && netdev->ieee80211_ptr) { 1873 rdev = wiphy_to_dev(netdev->ieee80211_ptr->wiphy); 1874 mutex_lock(&rdev->mtx); 1875 } else 1876 netdev = NULL; 1877 } 1878 1879 if (!netdev) { 1880 rdev = __cfg80211_rdev_from_attrs(genl_info_net(info), 1881 info->attrs); 1882 if (IS_ERR(rdev)) { 1883 mutex_unlock(&cfg80211_mutex); 1884 return PTR_ERR(rdev); 1885 } 1886 wdev = NULL; 1887 netdev = NULL; 1888 result = 0; 1889 1890 mutex_lock(&rdev->mtx); 1891 } else 1892 wdev = netdev->ieee80211_ptr; 1893 1894 /* 1895 * end workaround code, by now the rdev is available 1896 * and locked, and wdev may or may not be NULL. 1897 */ 1898 1899 if (info->attrs[NL80211_ATTR_WIPHY_NAME]) 1900 result = cfg80211_dev_rename( 1901 rdev, nla_data(info->attrs[NL80211_ATTR_WIPHY_NAME])); 1902 1903 mutex_unlock(&cfg80211_mutex); 1904 1905 if (result) 1906 goto bad_res; 1907 1908 if (info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS]) { 1909 struct ieee80211_txq_params txq_params; 1910 struct nlattr *tb[NL80211_TXQ_ATTR_MAX + 1]; 1911 1912 if (!rdev->ops->set_txq_params) { 1913 result = -EOPNOTSUPP; 1914 goto bad_res; 1915 } 1916 1917 if (!netdev) { 1918 result = -EINVAL; 1919 goto bad_res; 1920 } 1921 1922 if (netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP && 1923 netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) { 1924 result = -EINVAL; 1925 goto bad_res; 1926 } 1927 1928 if (!netif_running(netdev)) { 1929 result = -ENETDOWN; 1930 goto bad_res; 1931 } 1932 1933 nla_for_each_nested(nl_txq_params, 1934 info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS], 1935 rem_txq_params) { 1936 nla_parse(tb, NL80211_TXQ_ATTR_MAX, 1937 nla_data(nl_txq_params), 1938 nla_len(nl_txq_params), 1939 txq_params_policy); 1940 result = parse_txq_params(tb, &txq_params); 1941 if (result) 1942 goto bad_res; 1943 1944 result = rdev_set_txq_params(rdev, netdev, 1945 &txq_params); 1946 if (result) 1947 goto bad_res; 1948 } 1949 } 1950 1951 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) { 1952 result = __nl80211_set_channel(rdev, 1953 nl80211_can_set_dev_channel(wdev) ? wdev : NULL, 1954 info); 1955 if (result) 1956 goto bad_res; 1957 } 1958 1959 if (info->attrs[NL80211_ATTR_WIPHY_TX_POWER_SETTING]) { 1960 struct wireless_dev *txp_wdev = wdev; 1961 enum nl80211_tx_power_setting type; 1962 int idx, mbm = 0; 1963 1964 if (!(rdev->wiphy.features & NL80211_FEATURE_VIF_TXPOWER)) 1965 txp_wdev = NULL; 1966 1967 if (!rdev->ops->set_tx_power) { 1968 result = -EOPNOTSUPP; 1969 goto bad_res; 1970 } 1971 1972 idx = NL80211_ATTR_WIPHY_TX_POWER_SETTING; 1973 type = nla_get_u32(info->attrs[idx]); 1974 1975 if (!info->attrs[NL80211_ATTR_WIPHY_TX_POWER_LEVEL] && 1976 (type != NL80211_TX_POWER_AUTOMATIC)) { 1977 result = -EINVAL; 1978 goto bad_res; 1979 } 1980 1981 if (type != NL80211_TX_POWER_AUTOMATIC) { 1982 idx = NL80211_ATTR_WIPHY_TX_POWER_LEVEL; 1983 mbm = nla_get_u32(info->attrs[idx]); 1984 } 1985 1986 result = rdev_set_tx_power(rdev, txp_wdev, type, mbm); 1987 if (result) 1988 goto bad_res; 1989 } 1990 1991 if (info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX] && 1992 info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]) { 1993 u32 tx_ant, rx_ant; 1994 if ((!rdev->wiphy.available_antennas_tx && 1995 !rdev->wiphy.available_antennas_rx) || 1996 !rdev->ops->set_antenna) { 1997 result = -EOPNOTSUPP; 1998 goto bad_res; 1999 } 2000 2001 tx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX]); 2002 rx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]); 2003 2004 /* reject antenna configurations which don't match the 2005 * available antenna masks, except for the "all" mask */ 2006 if ((~tx_ant && (tx_ant & ~rdev->wiphy.available_antennas_tx)) || 2007 (~rx_ant && (rx_ant & ~rdev->wiphy.available_antennas_rx))) { 2008 result = -EINVAL; 2009 goto bad_res; 2010 } 2011 2012 tx_ant = tx_ant & rdev->wiphy.available_antennas_tx; 2013 rx_ant = rx_ant & rdev->wiphy.available_antennas_rx; 2014 2015 result = rdev_set_antenna(rdev, tx_ant, rx_ant); 2016 if (result) 2017 goto bad_res; 2018 } 2019 2020 changed = 0; 2021 2022 if (info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]) { 2023 retry_short = nla_get_u8( 2024 info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]); 2025 if (retry_short == 0) { 2026 result = -EINVAL; 2027 goto bad_res; 2028 } 2029 changed |= WIPHY_PARAM_RETRY_SHORT; 2030 } 2031 2032 if (info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]) { 2033 retry_long = nla_get_u8( 2034 info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]); 2035 if (retry_long == 0) { 2036 result = -EINVAL; 2037 goto bad_res; 2038 } 2039 changed |= WIPHY_PARAM_RETRY_LONG; 2040 } 2041 2042 if (info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]) { 2043 frag_threshold = nla_get_u32( 2044 info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]); 2045 if (frag_threshold < 256) { 2046 result = -EINVAL; 2047 goto bad_res; 2048 } 2049 if (frag_threshold != (u32) -1) { 2050 /* 2051 * Fragments (apart from the last one) are required to 2052 * have even length. Make the fragmentation code 2053 * simpler by stripping LSB should someone try to use 2054 * odd threshold value. 2055 */ 2056 frag_threshold &= ~0x1; 2057 } 2058 changed |= WIPHY_PARAM_FRAG_THRESHOLD; 2059 } 2060 2061 if (info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]) { 2062 rts_threshold = nla_get_u32( 2063 info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]); 2064 changed |= WIPHY_PARAM_RTS_THRESHOLD; 2065 } 2066 2067 if (info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]) { 2068 coverage_class = nla_get_u8( 2069 info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]); 2070 changed |= WIPHY_PARAM_COVERAGE_CLASS; 2071 } 2072 2073 if (changed) { 2074 u8 old_retry_short, old_retry_long; 2075 u32 old_frag_threshold, old_rts_threshold; 2076 u8 old_coverage_class; 2077 2078 if (!rdev->ops->set_wiphy_params) { 2079 result = -EOPNOTSUPP; 2080 goto bad_res; 2081 } 2082 2083 old_retry_short = rdev->wiphy.retry_short; 2084 old_retry_long = rdev->wiphy.retry_long; 2085 old_frag_threshold = rdev->wiphy.frag_threshold; 2086 old_rts_threshold = rdev->wiphy.rts_threshold; 2087 old_coverage_class = rdev->wiphy.coverage_class; 2088 2089 if (changed & WIPHY_PARAM_RETRY_SHORT) 2090 rdev->wiphy.retry_short = retry_short; 2091 if (changed & WIPHY_PARAM_RETRY_LONG) 2092 rdev->wiphy.retry_long = retry_long; 2093 if (changed & WIPHY_PARAM_FRAG_THRESHOLD) 2094 rdev->wiphy.frag_threshold = frag_threshold; 2095 if (changed & WIPHY_PARAM_RTS_THRESHOLD) 2096 rdev->wiphy.rts_threshold = rts_threshold; 2097 if (changed & WIPHY_PARAM_COVERAGE_CLASS) 2098 rdev->wiphy.coverage_class = coverage_class; 2099 2100 result = rdev_set_wiphy_params(rdev, changed); 2101 if (result) { 2102 rdev->wiphy.retry_short = old_retry_short; 2103 rdev->wiphy.retry_long = old_retry_long; 2104 rdev->wiphy.frag_threshold = old_frag_threshold; 2105 rdev->wiphy.rts_threshold = old_rts_threshold; 2106 rdev->wiphy.coverage_class = old_coverage_class; 2107 } 2108 } 2109 2110 bad_res: 2111 mutex_unlock(&rdev->mtx); 2112 if (netdev) 2113 dev_put(netdev); 2114 return result; 2115 } 2116 2117 static inline u64 wdev_id(struct wireless_dev *wdev) 2118 { 2119 return (u64)wdev->identifier | 2120 ((u64)wiphy_to_dev(wdev->wiphy)->wiphy_idx << 32); 2121 } 2122 2123 static int nl80211_send_chandef(struct sk_buff *msg, 2124 struct cfg80211_chan_def *chandef) 2125 { 2126 WARN_ON(!cfg80211_chandef_valid(chandef)); 2127 2128 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, 2129 chandef->chan->center_freq)) 2130 return -ENOBUFS; 2131 switch (chandef->width) { 2132 case NL80211_CHAN_WIDTH_20_NOHT: 2133 case NL80211_CHAN_WIDTH_20: 2134 case NL80211_CHAN_WIDTH_40: 2135 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE, 2136 cfg80211_get_chandef_type(chandef))) 2137 return -ENOBUFS; 2138 break; 2139 default: 2140 break; 2141 } 2142 if (nla_put_u32(msg, NL80211_ATTR_CHANNEL_WIDTH, chandef->width)) 2143 return -ENOBUFS; 2144 if (nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ1, chandef->center_freq1)) 2145 return -ENOBUFS; 2146 if (chandef->center_freq2 && 2147 nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ2, chandef->center_freq2)) 2148 return -ENOBUFS; 2149 return 0; 2150 } 2151 2152 static int nl80211_send_iface(struct sk_buff *msg, u32 portid, u32 seq, int flags, 2153 struct cfg80211_registered_device *rdev, 2154 struct wireless_dev *wdev) 2155 { 2156 struct net_device *dev = wdev->netdev; 2157 void *hdr; 2158 2159 hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_INTERFACE); 2160 if (!hdr) 2161 return -1; 2162 2163 if (dev && 2164 (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) || 2165 nla_put_string(msg, NL80211_ATTR_IFNAME, dev->name))) 2166 goto nla_put_failure; 2167 2168 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 2169 nla_put_u32(msg, NL80211_ATTR_IFTYPE, wdev->iftype) || 2170 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) || 2171 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, wdev_address(wdev)) || 2172 nla_put_u32(msg, NL80211_ATTR_GENERATION, 2173 rdev->devlist_generation ^ 2174 (cfg80211_rdev_list_generation << 2))) 2175 goto nla_put_failure; 2176 2177 if (rdev->ops->get_channel) { 2178 int ret; 2179 struct cfg80211_chan_def chandef; 2180 2181 ret = rdev_get_channel(rdev, wdev, &chandef); 2182 if (ret == 0) { 2183 if (nl80211_send_chandef(msg, &chandef)) 2184 goto nla_put_failure; 2185 } 2186 } 2187 2188 if (wdev->ssid_len) { 2189 if (nla_put(msg, NL80211_ATTR_SSID, wdev->ssid_len, wdev->ssid)) 2190 goto nla_put_failure; 2191 } 2192 2193 return genlmsg_end(msg, hdr); 2194 2195 nla_put_failure: 2196 genlmsg_cancel(msg, hdr); 2197 return -EMSGSIZE; 2198 } 2199 2200 static int nl80211_dump_interface(struct sk_buff *skb, struct netlink_callback *cb) 2201 { 2202 int wp_idx = 0; 2203 int if_idx = 0; 2204 int wp_start = cb->args[0]; 2205 int if_start = cb->args[1]; 2206 struct cfg80211_registered_device *rdev; 2207 struct wireless_dev *wdev; 2208 2209 mutex_lock(&cfg80211_mutex); 2210 list_for_each_entry(rdev, &cfg80211_rdev_list, list) { 2211 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk))) 2212 continue; 2213 if (wp_idx < wp_start) { 2214 wp_idx++; 2215 continue; 2216 } 2217 if_idx = 0; 2218 2219 mutex_lock(&rdev->devlist_mtx); 2220 list_for_each_entry(wdev, &rdev->wdev_list, list) { 2221 if (if_idx < if_start) { 2222 if_idx++; 2223 continue; 2224 } 2225 if (nl80211_send_iface(skb, NETLINK_CB(cb->skb).portid, 2226 cb->nlh->nlmsg_seq, NLM_F_MULTI, 2227 rdev, wdev) < 0) { 2228 mutex_unlock(&rdev->devlist_mtx); 2229 goto out; 2230 } 2231 if_idx++; 2232 } 2233 mutex_unlock(&rdev->devlist_mtx); 2234 2235 wp_idx++; 2236 } 2237 out: 2238 mutex_unlock(&cfg80211_mutex); 2239 2240 cb->args[0] = wp_idx; 2241 cb->args[1] = if_idx; 2242 2243 return skb->len; 2244 } 2245 2246 static int nl80211_get_interface(struct sk_buff *skb, struct genl_info *info) 2247 { 2248 struct sk_buff *msg; 2249 struct cfg80211_registered_device *dev = info->user_ptr[0]; 2250 struct wireless_dev *wdev = info->user_ptr[1]; 2251 2252 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 2253 if (!msg) 2254 return -ENOMEM; 2255 2256 if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0, 2257 dev, wdev) < 0) { 2258 nlmsg_free(msg); 2259 return -ENOBUFS; 2260 } 2261 2262 return genlmsg_reply(msg, info); 2263 } 2264 2265 static const struct nla_policy mntr_flags_policy[NL80211_MNTR_FLAG_MAX + 1] = { 2266 [NL80211_MNTR_FLAG_FCSFAIL] = { .type = NLA_FLAG }, 2267 [NL80211_MNTR_FLAG_PLCPFAIL] = { .type = NLA_FLAG }, 2268 [NL80211_MNTR_FLAG_CONTROL] = { .type = NLA_FLAG }, 2269 [NL80211_MNTR_FLAG_OTHER_BSS] = { .type = NLA_FLAG }, 2270 [NL80211_MNTR_FLAG_COOK_FRAMES] = { .type = NLA_FLAG }, 2271 }; 2272 2273 static int parse_monitor_flags(struct nlattr *nla, u32 *mntrflags) 2274 { 2275 struct nlattr *flags[NL80211_MNTR_FLAG_MAX + 1]; 2276 int flag; 2277 2278 *mntrflags = 0; 2279 2280 if (!nla) 2281 return -EINVAL; 2282 2283 if (nla_parse_nested(flags, NL80211_MNTR_FLAG_MAX, 2284 nla, mntr_flags_policy)) 2285 return -EINVAL; 2286 2287 for (flag = 1; flag <= NL80211_MNTR_FLAG_MAX; flag++) 2288 if (flags[flag]) 2289 *mntrflags |= (1<<flag); 2290 2291 return 0; 2292 } 2293 2294 static int nl80211_valid_4addr(struct cfg80211_registered_device *rdev, 2295 struct net_device *netdev, u8 use_4addr, 2296 enum nl80211_iftype iftype) 2297 { 2298 if (!use_4addr) { 2299 if (netdev && (netdev->priv_flags & IFF_BRIDGE_PORT)) 2300 return -EBUSY; 2301 return 0; 2302 } 2303 2304 switch (iftype) { 2305 case NL80211_IFTYPE_AP_VLAN: 2306 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_AP) 2307 return 0; 2308 break; 2309 case NL80211_IFTYPE_STATION: 2310 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_STATION) 2311 return 0; 2312 break; 2313 default: 2314 break; 2315 } 2316 2317 return -EOPNOTSUPP; 2318 } 2319 2320 static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info) 2321 { 2322 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 2323 struct vif_params params; 2324 int err; 2325 enum nl80211_iftype otype, ntype; 2326 struct net_device *dev = info->user_ptr[1]; 2327 u32 _flags, *flags = NULL; 2328 bool change = false; 2329 2330 memset(¶ms, 0, sizeof(params)); 2331 2332 otype = ntype = dev->ieee80211_ptr->iftype; 2333 2334 if (info->attrs[NL80211_ATTR_IFTYPE]) { 2335 ntype = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]); 2336 if (otype != ntype) 2337 change = true; 2338 if (ntype > NL80211_IFTYPE_MAX) 2339 return -EINVAL; 2340 } 2341 2342 if (info->attrs[NL80211_ATTR_MESH_ID]) { 2343 struct wireless_dev *wdev = dev->ieee80211_ptr; 2344 2345 if (ntype != NL80211_IFTYPE_MESH_POINT) 2346 return -EINVAL; 2347 if (netif_running(dev)) 2348 return -EBUSY; 2349 2350 wdev_lock(wdev); 2351 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN != 2352 IEEE80211_MAX_MESH_ID_LEN); 2353 wdev->mesh_id_up_len = 2354 nla_len(info->attrs[NL80211_ATTR_MESH_ID]); 2355 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]), 2356 wdev->mesh_id_up_len); 2357 wdev_unlock(wdev); 2358 } 2359 2360 if (info->attrs[NL80211_ATTR_4ADDR]) { 2361 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]); 2362 change = true; 2363 err = nl80211_valid_4addr(rdev, dev, params.use_4addr, ntype); 2364 if (err) 2365 return err; 2366 } else { 2367 params.use_4addr = -1; 2368 } 2369 2370 if (info->attrs[NL80211_ATTR_MNTR_FLAGS]) { 2371 if (ntype != NL80211_IFTYPE_MONITOR) 2372 return -EINVAL; 2373 err = parse_monitor_flags(info->attrs[NL80211_ATTR_MNTR_FLAGS], 2374 &_flags); 2375 if (err) 2376 return err; 2377 2378 flags = &_flags; 2379 change = true; 2380 } 2381 2382 if (change) 2383 err = cfg80211_change_iface(rdev, dev, ntype, flags, ¶ms); 2384 else 2385 err = 0; 2386 2387 if (!err && params.use_4addr != -1) 2388 dev->ieee80211_ptr->use_4addr = params.use_4addr; 2389 2390 return err; 2391 } 2392 2393 static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info) 2394 { 2395 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 2396 struct vif_params params; 2397 struct wireless_dev *wdev; 2398 struct sk_buff *msg; 2399 int err; 2400 enum nl80211_iftype type = NL80211_IFTYPE_UNSPECIFIED; 2401 u32 flags; 2402 2403 memset(¶ms, 0, sizeof(params)); 2404 2405 if (!info->attrs[NL80211_ATTR_IFNAME]) 2406 return -EINVAL; 2407 2408 if (info->attrs[NL80211_ATTR_IFTYPE]) { 2409 type = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]); 2410 if (type > NL80211_IFTYPE_MAX) 2411 return -EINVAL; 2412 } 2413 2414 if (!rdev->ops->add_virtual_intf || 2415 !(rdev->wiphy.interface_modes & (1 << type))) 2416 return -EOPNOTSUPP; 2417 2418 if (type == NL80211_IFTYPE_P2P_DEVICE && info->attrs[NL80211_ATTR_MAC]) { 2419 nla_memcpy(params.macaddr, info->attrs[NL80211_ATTR_MAC], 2420 ETH_ALEN); 2421 if (!is_valid_ether_addr(params.macaddr)) 2422 return -EADDRNOTAVAIL; 2423 } 2424 2425 if (info->attrs[NL80211_ATTR_4ADDR]) { 2426 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]); 2427 err = nl80211_valid_4addr(rdev, NULL, params.use_4addr, type); 2428 if (err) 2429 return err; 2430 } 2431 2432 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 2433 if (!msg) 2434 return -ENOMEM; 2435 2436 err = parse_monitor_flags(type == NL80211_IFTYPE_MONITOR ? 2437 info->attrs[NL80211_ATTR_MNTR_FLAGS] : NULL, 2438 &flags); 2439 wdev = rdev_add_virtual_intf(rdev, 2440 nla_data(info->attrs[NL80211_ATTR_IFNAME]), 2441 type, err ? NULL : &flags, ¶ms); 2442 if (IS_ERR(wdev)) { 2443 nlmsg_free(msg); 2444 return PTR_ERR(wdev); 2445 } 2446 2447 switch (type) { 2448 case NL80211_IFTYPE_MESH_POINT: 2449 if (!info->attrs[NL80211_ATTR_MESH_ID]) 2450 break; 2451 wdev_lock(wdev); 2452 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN != 2453 IEEE80211_MAX_MESH_ID_LEN); 2454 wdev->mesh_id_up_len = 2455 nla_len(info->attrs[NL80211_ATTR_MESH_ID]); 2456 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]), 2457 wdev->mesh_id_up_len); 2458 wdev_unlock(wdev); 2459 break; 2460 case NL80211_IFTYPE_P2P_DEVICE: 2461 /* 2462 * P2P Device doesn't have a netdev, so doesn't go 2463 * through the netdev notifier and must be added here 2464 */ 2465 mutex_init(&wdev->mtx); 2466 INIT_LIST_HEAD(&wdev->event_list); 2467 spin_lock_init(&wdev->event_lock); 2468 INIT_LIST_HEAD(&wdev->mgmt_registrations); 2469 spin_lock_init(&wdev->mgmt_registrations_lock); 2470 2471 mutex_lock(&rdev->devlist_mtx); 2472 wdev->identifier = ++rdev->wdev_id; 2473 list_add_rcu(&wdev->list, &rdev->wdev_list); 2474 rdev->devlist_generation++; 2475 mutex_unlock(&rdev->devlist_mtx); 2476 break; 2477 default: 2478 break; 2479 } 2480 2481 if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0, 2482 rdev, wdev) < 0) { 2483 nlmsg_free(msg); 2484 return -ENOBUFS; 2485 } 2486 2487 return genlmsg_reply(msg, info); 2488 } 2489 2490 static int nl80211_del_interface(struct sk_buff *skb, struct genl_info *info) 2491 { 2492 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 2493 struct wireless_dev *wdev = info->user_ptr[1]; 2494 2495 if (!rdev->ops->del_virtual_intf) 2496 return -EOPNOTSUPP; 2497 2498 /* 2499 * If we remove a wireless device without a netdev then clear 2500 * user_ptr[1] so that nl80211_post_doit won't dereference it 2501 * to check if it needs to do dev_put(). Otherwise it crashes 2502 * since the wdev has been freed, unlike with a netdev where 2503 * we need the dev_put() for the netdev to really be freed. 2504 */ 2505 if (!wdev->netdev) 2506 info->user_ptr[1] = NULL; 2507 2508 return rdev_del_virtual_intf(rdev, wdev); 2509 } 2510 2511 static int nl80211_set_noack_map(struct sk_buff *skb, struct genl_info *info) 2512 { 2513 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 2514 struct net_device *dev = info->user_ptr[1]; 2515 u16 noack_map; 2516 2517 if (!info->attrs[NL80211_ATTR_NOACK_MAP]) 2518 return -EINVAL; 2519 2520 if (!rdev->ops->set_noack_map) 2521 return -EOPNOTSUPP; 2522 2523 noack_map = nla_get_u16(info->attrs[NL80211_ATTR_NOACK_MAP]); 2524 2525 return rdev_set_noack_map(rdev, dev, noack_map); 2526 } 2527 2528 struct get_key_cookie { 2529 struct sk_buff *msg; 2530 int error; 2531 int idx; 2532 }; 2533 2534 static void get_key_callback(void *c, struct key_params *params) 2535 { 2536 struct nlattr *key; 2537 struct get_key_cookie *cookie = c; 2538 2539 if ((params->key && 2540 nla_put(cookie->msg, NL80211_ATTR_KEY_DATA, 2541 params->key_len, params->key)) || 2542 (params->seq && 2543 nla_put(cookie->msg, NL80211_ATTR_KEY_SEQ, 2544 params->seq_len, params->seq)) || 2545 (params->cipher && 2546 nla_put_u32(cookie->msg, NL80211_ATTR_KEY_CIPHER, 2547 params->cipher))) 2548 goto nla_put_failure; 2549 2550 key = nla_nest_start(cookie->msg, NL80211_ATTR_KEY); 2551 if (!key) 2552 goto nla_put_failure; 2553 2554 if ((params->key && 2555 nla_put(cookie->msg, NL80211_KEY_DATA, 2556 params->key_len, params->key)) || 2557 (params->seq && 2558 nla_put(cookie->msg, NL80211_KEY_SEQ, 2559 params->seq_len, params->seq)) || 2560 (params->cipher && 2561 nla_put_u32(cookie->msg, NL80211_KEY_CIPHER, 2562 params->cipher))) 2563 goto nla_put_failure; 2564 2565 if (nla_put_u8(cookie->msg, NL80211_ATTR_KEY_IDX, cookie->idx)) 2566 goto nla_put_failure; 2567 2568 nla_nest_end(cookie->msg, key); 2569 2570 return; 2571 nla_put_failure: 2572 cookie->error = 1; 2573 } 2574 2575 static int nl80211_get_key(struct sk_buff *skb, struct genl_info *info) 2576 { 2577 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 2578 int err; 2579 struct net_device *dev = info->user_ptr[1]; 2580 u8 key_idx = 0; 2581 const u8 *mac_addr = NULL; 2582 bool pairwise; 2583 struct get_key_cookie cookie = { 2584 .error = 0, 2585 }; 2586 void *hdr; 2587 struct sk_buff *msg; 2588 2589 if (info->attrs[NL80211_ATTR_KEY_IDX]) 2590 key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]); 2591 2592 if (key_idx > 5) 2593 return -EINVAL; 2594 2595 if (info->attrs[NL80211_ATTR_MAC]) 2596 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]); 2597 2598 pairwise = !!mac_addr; 2599 if (info->attrs[NL80211_ATTR_KEY_TYPE]) { 2600 u32 kt = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]); 2601 if (kt >= NUM_NL80211_KEYTYPES) 2602 return -EINVAL; 2603 if (kt != NL80211_KEYTYPE_GROUP && 2604 kt != NL80211_KEYTYPE_PAIRWISE) 2605 return -EINVAL; 2606 pairwise = kt == NL80211_KEYTYPE_PAIRWISE; 2607 } 2608 2609 if (!rdev->ops->get_key) 2610 return -EOPNOTSUPP; 2611 2612 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 2613 if (!msg) 2614 return -ENOMEM; 2615 2616 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0, 2617 NL80211_CMD_NEW_KEY); 2618 if (IS_ERR(hdr)) 2619 return PTR_ERR(hdr); 2620 2621 cookie.msg = msg; 2622 cookie.idx = key_idx; 2623 2624 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) || 2625 nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_idx)) 2626 goto nla_put_failure; 2627 if (mac_addr && 2628 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr)) 2629 goto nla_put_failure; 2630 2631 if (pairwise && mac_addr && 2632 !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN)) 2633 return -ENOENT; 2634 2635 err = rdev_get_key(rdev, dev, key_idx, pairwise, mac_addr, &cookie, 2636 get_key_callback); 2637 2638 if (err) 2639 goto free_msg; 2640 2641 if (cookie.error) 2642 goto nla_put_failure; 2643 2644 genlmsg_end(msg, hdr); 2645 return genlmsg_reply(msg, info); 2646 2647 nla_put_failure: 2648 err = -ENOBUFS; 2649 free_msg: 2650 nlmsg_free(msg); 2651 return err; 2652 } 2653 2654 static int nl80211_set_key(struct sk_buff *skb, struct genl_info *info) 2655 { 2656 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 2657 struct key_parse key; 2658 int err; 2659 struct net_device *dev = info->user_ptr[1]; 2660 2661 err = nl80211_parse_key(info, &key); 2662 if (err) 2663 return err; 2664 2665 if (key.idx < 0) 2666 return -EINVAL; 2667 2668 /* only support setting default key */ 2669 if (!key.def && !key.defmgmt) 2670 return -EINVAL; 2671 2672 wdev_lock(dev->ieee80211_ptr); 2673 2674 if (key.def) { 2675 if (!rdev->ops->set_default_key) { 2676 err = -EOPNOTSUPP; 2677 goto out; 2678 } 2679 2680 err = nl80211_key_allowed(dev->ieee80211_ptr); 2681 if (err) 2682 goto out; 2683 2684 err = rdev_set_default_key(rdev, dev, key.idx, 2685 key.def_uni, key.def_multi); 2686 2687 if (err) 2688 goto out; 2689 2690 #ifdef CONFIG_CFG80211_WEXT 2691 dev->ieee80211_ptr->wext.default_key = key.idx; 2692 #endif 2693 } else { 2694 if (key.def_uni || !key.def_multi) { 2695 err = -EINVAL; 2696 goto out; 2697 } 2698 2699 if (!rdev->ops->set_default_mgmt_key) { 2700 err = -EOPNOTSUPP; 2701 goto out; 2702 } 2703 2704 err = nl80211_key_allowed(dev->ieee80211_ptr); 2705 if (err) 2706 goto out; 2707 2708 err = rdev_set_default_mgmt_key(rdev, dev, key.idx); 2709 if (err) 2710 goto out; 2711 2712 #ifdef CONFIG_CFG80211_WEXT 2713 dev->ieee80211_ptr->wext.default_mgmt_key = key.idx; 2714 #endif 2715 } 2716 2717 out: 2718 wdev_unlock(dev->ieee80211_ptr); 2719 2720 return err; 2721 } 2722 2723 static int nl80211_new_key(struct sk_buff *skb, struct genl_info *info) 2724 { 2725 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 2726 int err; 2727 struct net_device *dev = info->user_ptr[1]; 2728 struct key_parse key; 2729 const u8 *mac_addr = NULL; 2730 2731 err = nl80211_parse_key(info, &key); 2732 if (err) 2733 return err; 2734 2735 if (!key.p.key) 2736 return -EINVAL; 2737 2738 if (info->attrs[NL80211_ATTR_MAC]) 2739 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]); 2740 2741 if (key.type == -1) { 2742 if (mac_addr) 2743 key.type = NL80211_KEYTYPE_PAIRWISE; 2744 else 2745 key.type = NL80211_KEYTYPE_GROUP; 2746 } 2747 2748 /* for now */ 2749 if (key.type != NL80211_KEYTYPE_PAIRWISE && 2750 key.type != NL80211_KEYTYPE_GROUP) 2751 return -EINVAL; 2752 2753 if (!rdev->ops->add_key) 2754 return -EOPNOTSUPP; 2755 2756 if (cfg80211_validate_key_settings(rdev, &key.p, key.idx, 2757 key.type == NL80211_KEYTYPE_PAIRWISE, 2758 mac_addr)) 2759 return -EINVAL; 2760 2761 wdev_lock(dev->ieee80211_ptr); 2762 err = nl80211_key_allowed(dev->ieee80211_ptr); 2763 if (!err) 2764 err = rdev_add_key(rdev, dev, key.idx, 2765 key.type == NL80211_KEYTYPE_PAIRWISE, 2766 mac_addr, &key.p); 2767 wdev_unlock(dev->ieee80211_ptr); 2768 2769 return err; 2770 } 2771 2772 static int nl80211_del_key(struct sk_buff *skb, struct genl_info *info) 2773 { 2774 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 2775 int err; 2776 struct net_device *dev = info->user_ptr[1]; 2777 u8 *mac_addr = NULL; 2778 struct key_parse key; 2779 2780 err = nl80211_parse_key(info, &key); 2781 if (err) 2782 return err; 2783 2784 if (info->attrs[NL80211_ATTR_MAC]) 2785 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]); 2786 2787 if (key.type == -1) { 2788 if (mac_addr) 2789 key.type = NL80211_KEYTYPE_PAIRWISE; 2790 else 2791 key.type = NL80211_KEYTYPE_GROUP; 2792 } 2793 2794 /* for now */ 2795 if (key.type != NL80211_KEYTYPE_PAIRWISE && 2796 key.type != NL80211_KEYTYPE_GROUP) 2797 return -EINVAL; 2798 2799 if (!rdev->ops->del_key) 2800 return -EOPNOTSUPP; 2801 2802 wdev_lock(dev->ieee80211_ptr); 2803 err = nl80211_key_allowed(dev->ieee80211_ptr); 2804 2805 if (key.type == NL80211_KEYTYPE_PAIRWISE && mac_addr && 2806 !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN)) 2807 err = -ENOENT; 2808 2809 if (!err) 2810 err = rdev_del_key(rdev, dev, key.idx, 2811 key.type == NL80211_KEYTYPE_PAIRWISE, 2812 mac_addr); 2813 2814 #ifdef CONFIG_CFG80211_WEXT 2815 if (!err) { 2816 if (key.idx == dev->ieee80211_ptr->wext.default_key) 2817 dev->ieee80211_ptr->wext.default_key = -1; 2818 else if (key.idx == dev->ieee80211_ptr->wext.default_mgmt_key) 2819 dev->ieee80211_ptr->wext.default_mgmt_key = -1; 2820 } 2821 #endif 2822 wdev_unlock(dev->ieee80211_ptr); 2823 2824 return err; 2825 } 2826 2827 /* This function returns an error or the number of nested attributes */ 2828 static int validate_acl_mac_addrs(struct nlattr *nl_attr) 2829 { 2830 struct nlattr *attr; 2831 int n_entries = 0, tmp; 2832 2833 nla_for_each_nested(attr, nl_attr, tmp) { 2834 if (nla_len(attr) != ETH_ALEN) 2835 return -EINVAL; 2836 2837 n_entries++; 2838 } 2839 2840 return n_entries; 2841 } 2842 2843 /* 2844 * This function parses ACL information and allocates memory for ACL data. 2845 * On successful return, the calling function is responsible to free the 2846 * ACL buffer returned by this function. 2847 */ 2848 static struct cfg80211_acl_data *parse_acl_data(struct wiphy *wiphy, 2849 struct genl_info *info) 2850 { 2851 enum nl80211_acl_policy acl_policy; 2852 struct nlattr *attr; 2853 struct cfg80211_acl_data *acl; 2854 int i = 0, n_entries, tmp; 2855 2856 if (!wiphy->max_acl_mac_addrs) 2857 return ERR_PTR(-EOPNOTSUPP); 2858 2859 if (!info->attrs[NL80211_ATTR_ACL_POLICY]) 2860 return ERR_PTR(-EINVAL); 2861 2862 acl_policy = nla_get_u32(info->attrs[NL80211_ATTR_ACL_POLICY]); 2863 if (acl_policy != NL80211_ACL_POLICY_ACCEPT_UNLESS_LISTED && 2864 acl_policy != NL80211_ACL_POLICY_DENY_UNLESS_LISTED) 2865 return ERR_PTR(-EINVAL); 2866 2867 if (!info->attrs[NL80211_ATTR_MAC_ADDRS]) 2868 return ERR_PTR(-EINVAL); 2869 2870 n_entries = validate_acl_mac_addrs(info->attrs[NL80211_ATTR_MAC_ADDRS]); 2871 if (n_entries < 0) 2872 return ERR_PTR(n_entries); 2873 2874 if (n_entries > wiphy->max_acl_mac_addrs) 2875 return ERR_PTR(-ENOTSUPP); 2876 2877 acl = kzalloc(sizeof(*acl) + (sizeof(struct mac_address) * n_entries), 2878 GFP_KERNEL); 2879 if (!acl) 2880 return ERR_PTR(-ENOMEM); 2881 2882 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_MAC_ADDRS], tmp) { 2883 memcpy(acl->mac_addrs[i].addr, nla_data(attr), ETH_ALEN); 2884 i++; 2885 } 2886 2887 acl->n_acl_entries = n_entries; 2888 acl->acl_policy = acl_policy; 2889 2890 return acl; 2891 } 2892 2893 static int nl80211_set_mac_acl(struct sk_buff *skb, struct genl_info *info) 2894 { 2895 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 2896 struct net_device *dev = info->user_ptr[1]; 2897 struct cfg80211_acl_data *acl; 2898 int err; 2899 2900 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP && 2901 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) 2902 return -EOPNOTSUPP; 2903 2904 if (!dev->ieee80211_ptr->beacon_interval) 2905 return -EINVAL; 2906 2907 acl = parse_acl_data(&rdev->wiphy, info); 2908 if (IS_ERR(acl)) 2909 return PTR_ERR(acl); 2910 2911 err = rdev_set_mac_acl(rdev, dev, acl); 2912 2913 kfree(acl); 2914 2915 return err; 2916 } 2917 2918 static int nl80211_parse_beacon(struct genl_info *info, 2919 struct cfg80211_beacon_data *bcn) 2920 { 2921 bool haveinfo = false; 2922 2923 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_BEACON_TAIL]) || 2924 !is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]) || 2925 !is_valid_ie_attr(info->attrs[NL80211_ATTR_IE_PROBE_RESP]) || 2926 !is_valid_ie_attr(info->attrs[NL80211_ATTR_IE_ASSOC_RESP])) 2927 return -EINVAL; 2928 2929 memset(bcn, 0, sizeof(*bcn)); 2930 2931 if (info->attrs[NL80211_ATTR_BEACON_HEAD]) { 2932 bcn->head = nla_data(info->attrs[NL80211_ATTR_BEACON_HEAD]); 2933 bcn->head_len = nla_len(info->attrs[NL80211_ATTR_BEACON_HEAD]); 2934 if (!bcn->head_len) 2935 return -EINVAL; 2936 haveinfo = true; 2937 } 2938 2939 if (info->attrs[NL80211_ATTR_BEACON_TAIL]) { 2940 bcn->tail = nla_data(info->attrs[NL80211_ATTR_BEACON_TAIL]); 2941 bcn->tail_len = 2942 nla_len(info->attrs[NL80211_ATTR_BEACON_TAIL]); 2943 haveinfo = true; 2944 } 2945 2946 if (!haveinfo) 2947 return -EINVAL; 2948 2949 if (info->attrs[NL80211_ATTR_IE]) { 2950 bcn->beacon_ies = nla_data(info->attrs[NL80211_ATTR_IE]); 2951 bcn->beacon_ies_len = nla_len(info->attrs[NL80211_ATTR_IE]); 2952 } 2953 2954 if (info->attrs[NL80211_ATTR_IE_PROBE_RESP]) { 2955 bcn->proberesp_ies = 2956 nla_data(info->attrs[NL80211_ATTR_IE_PROBE_RESP]); 2957 bcn->proberesp_ies_len = 2958 nla_len(info->attrs[NL80211_ATTR_IE_PROBE_RESP]); 2959 } 2960 2961 if (info->attrs[NL80211_ATTR_IE_ASSOC_RESP]) { 2962 bcn->assocresp_ies = 2963 nla_data(info->attrs[NL80211_ATTR_IE_ASSOC_RESP]); 2964 bcn->assocresp_ies_len = 2965 nla_len(info->attrs[NL80211_ATTR_IE_ASSOC_RESP]); 2966 } 2967 2968 if (info->attrs[NL80211_ATTR_PROBE_RESP]) { 2969 bcn->probe_resp = 2970 nla_data(info->attrs[NL80211_ATTR_PROBE_RESP]); 2971 bcn->probe_resp_len = 2972 nla_len(info->attrs[NL80211_ATTR_PROBE_RESP]); 2973 } 2974 2975 return 0; 2976 } 2977 2978 static bool nl80211_get_ap_channel(struct cfg80211_registered_device *rdev, 2979 struct cfg80211_ap_settings *params) 2980 { 2981 struct wireless_dev *wdev; 2982 bool ret = false; 2983 2984 mutex_lock(&rdev->devlist_mtx); 2985 2986 list_for_each_entry(wdev, &rdev->wdev_list, list) { 2987 if (wdev->iftype != NL80211_IFTYPE_AP && 2988 wdev->iftype != NL80211_IFTYPE_P2P_GO) 2989 continue; 2990 2991 if (!wdev->preset_chandef.chan) 2992 continue; 2993 2994 params->chandef = wdev->preset_chandef; 2995 ret = true; 2996 break; 2997 } 2998 2999 mutex_unlock(&rdev->devlist_mtx); 3000 3001 return ret; 3002 } 3003 3004 static bool nl80211_valid_auth_type(struct cfg80211_registered_device *rdev, 3005 enum nl80211_auth_type auth_type, 3006 enum nl80211_commands cmd) 3007 { 3008 if (auth_type > NL80211_AUTHTYPE_MAX) 3009 return false; 3010 3011 switch (cmd) { 3012 case NL80211_CMD_AUTHENTICATE: 3013 if (!(rdev->wiphy.features & NL80211_FEATURE_SAE) && 3014 auth_type == NL80211_AUTHTYPE_SAE) 3015 return false; 3016 return true; 3017 case NL80211_CMD_CONNECT: 3018 case NL80211_CMD_START_AP: 3019 /* SAE not supported yet */ 3020 if (auth_type == NL80211_AUTHTYPE_SAE) 3021 return false; 3022 return true; 3023 default: 3024 return false; 3025 } 3026 } 3027 3028 static int nl80211_start_ap(struct sk_buff *skb, struct genl_info *info) 3029 { 3030 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 3031 struct net_device *dev = info->user_ptr[1]; 3032 struct wireless_dev *wdev = dev->ieee80211_ptr; 3033 struct cfg80211_ap_settings params; 3034 int err; 3035 u8 radar_detect_width = 0; 3036 3037 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP && 3038 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) 3039 return -EOPNOTSUPP; 3040 3041 if (!rdev->ops->start_ap) 3042 return -EOPNOTSUPP; 3043 3044 if (wdev->beacon_interval) 3045 return -EALREADY; 3046 3047 memset(¶ms, 0, sizeof(params)); 3048 3049 /* these are required for START_AP */ 3050 if (!info->attrs[NL80211_ATTR_BEACON_INTERVAL] || 3051 !info->attrs[NL80211_ATTR_DTIM_PERIOD] || 3052 !info->attrs[NL80211_ATTR_BEACON_HEAD]) 3053 return -EINVAL; 3054 3055 err = nl80211_parse_beacon(info, ¶ms.beacon); 3056 if (err) 3057 return err; 3058 3059 params.beacon_interval = 3060 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]); 3061 params.dtim_period = 3062 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]); 3063 3064 err = cfg80211_validate_beacon_int(rdev, params.beacon_interval); 3065 if (err) 3066 return err; 3067 3068 /* 3069 * In theory, some of these attributes should be required here 3070 * but since they were not used when the command was originally 3071 * added, keep them optional for old user space programs to let 3072 * them continue to work with drivers that do not need the 3073 * additional information -- drivers must check! 3074 */ 3075 if (info->attrs[NL80211_ATTR_SSID]) { 3076 params.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]); 3077 params.ssid_len = 3078 nla_len(info->attrs[NL80211_ATTR_SSID]); 3079 if (params.ssid_len == 0 || 3080 params.ssid_len > IEEE80211_MAX_SSID_LEN) 3081 return -EINVAL; 3082 } 3083 3084 if (info->attrs[NL80211_ATTR_HIDDEN_SSID]) { 3085 params.hidden_ssid = nla_get_u32( 3086 info->attrs[NL80211_ATTR_HIDDEN_SSID]); 3087 if (params.hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE && 3088 params.hidden_ssid != NL80211_HIDDEN_SSID_ZERO_LEN && 3089 params.hidden_ssid != NL80211_HIDDEN_SSID_ZERO_CONTENTS) 3090 return -EINVAL; 3091 } 3092 3093 params.privacy = !!info->attrs[NL80211_ATTR_PRIVACY]; 3094 3095 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) { 3096 params.auth_type = nla_get_u32( 3097 info->attrs[NL80211_ATTR_AUTH_TYPE]); 3098 if (!nl80211_valid_auth_type(rdev, params.auth_type, 3099 NL80211_CMD_START_AP)) 3100 return -EINVAL; 3101 } else 3102 params.auth_type = NL80211_AUTHTYPE_AUTOMATIC; 3103 3104 err = nl80211_crypto_settings(rdev, info, ¶ms.crypto, 3105 NL80211_MAX_NR_CIPHER_SUITES); 3106 if (err) 3107 return err; 3108 3109 if (info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]) { 3110 if (!(rdev->wiphy.features & NL80211_FEATURE_INACTIVITY_TIMER)) 3111 return -EOPNOTSUPP; 3112 params.inactivity_timeout = nla_get_u16( 3113 info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]); 3114 } 3115 3116 if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) { 3117 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) 3118 return -EINVAL; 3119 params.p2p_ctwindow = 3120 nla_get_u8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]); 3121 if (params.p2p_ctwindow > 127) 3122 return -EINVAL; 3123 if (params.p2p_ctwindow != 0 && 3124 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN)) 3125 return -EINVAL; 3126 } 3127 3128 if (info->attrs[NL80211_ATTR_P2P_OPPPS]) { 3129 u8 tmp; 3130 3131 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) 3132 return -EINVAL; 3133 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]); 3134 if (tmp > 1) 3135 return -EINVAL; 3136 params.p2p_opp_ps = tmp; 3137 if (params.p2p_opp_ps != 0 && 3138 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS)) 3139 return -EINVAL; 3140 } 3141 3142 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) { 3143 err = nl80211_parse_chandef(rdev, info, ¶ms.chandef); 3144 if (err) 3145 return err; 3146 } else if (wdev->preset_chandef.chan) { 3147 params.chandef = wdev->preset_chandef; 3148 } else if (!nl80211_get_ap_channel(rdev, ¶ms)) 3149 return -EINVAL; 3150 3151 if (!cfg80211_reg_can_beacon(&rdev->wiphy, ¶ms.chandef)) 3152 return -EINVAL; 3153 3154 err = cfg80211_chandef_dfs_required(wdev->wiphy, ¶ms.chandef); 3155 if (err < 0) 3156 return err; 3157 if (err) { 3158 radar_detect_width = BIT(params.chandef.width); 3159 params.radar_required = true; 3160 } 3161 3162 mutex_lock(&rdev->devlist_mtx); 3163 err = cfg80211_can_use_iftype_chan(rdev, wdev, wdev->iftype, 3164 params.chandef.chan, 3165 CHAN_MODE_SHARED, 3166 radar_detect_width); 3167 mutex_unlock(&rdev->devlist_mtx); 3168 3169 if (err) 3170 return err; 3171 3172 if (info->attrs[NL80211_ATTR_ACL_POLICY]) { 3173 params.acl = parse_acl_data(&rdev->wiphy, info); 3174 if (IS_ERR(params.acl)) 3175 return PTR_ERR(params.acl); 3176 } 3177 3178 err = rdev_start_ap(rdev, dev, ¶ms); 3179 if (!err) { 3180 wdev->preset_chandef = params.chandef; 3181 wdev->beacon_interval = params.beacon_interval; 3182 wdev->channel = params.chandef.chan; 3183 wdev->ssid_len = params.ssid_len; 3184 memcpy(wdev->ssid, params.ssid, wdev->ssid_len); 3185 } 3186 3187 kfree(params.acl); 3188 3189 return err; 3190 } 3191 3192 static int nl80211_set_beacon(struct sk_buff *skb, struct genl_info *info) 3193 { 3194 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 3195 struct net_device *dev = info->user_ptr[1]; 3196 struct wireless_dev *wdev = dev->ieee80211_ptr; 3197 struct cfg80211_beacon_data params; 3198 int err; 3199 3200 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP && 3201 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) 3202 return -EOPNOTSUPP; 3203 3204 if (!rdev->ops->change_beacon) 3205 return -EOPNOTSUPP; 3206 3207 if (!wdev->beacon_interval) 3208 return -EINVAL; 3209 3210 err = nl80211_parse_beacon(info, ¶ms); 3211 if (err) 3212 return err; 3213 3214 return rdev_change_beacon(rdev, dev, ¶ms); 3215 } 3216 3217 static int nl80211_stop_ap(struct sk_buff *skb, struct genl_info *info) 3218 { 3219 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 3220 struct net_device *dev = info->user_ptr[1]; 3221 3222 return cfg80211_stop_ap(rdev, dev); 3223 } 3224 3225 static const struct nla_policy sta_flags_policy[NL80211_STA_FLAG_MAX + 1] = { 3226 [NL80211_STA_FLAG_AUTHORIZED] = { .type = NLA_FLAG }, 3227 [NL80211_STA_FLAG_SHORT_PREAMBLE] = { .type = NLA_FLAG }, 3228 [NL80211_STA_FLAG_WME] = { .type = NLA_FLAG }, 3229 [NL80211_STA_FLAG_MFP] = { .type = NLA_FLAG }, 3230 [NL80211_STA_FLAG_AUTHENTICATED] = { .type = NLA_FLAG }, 3231 [NL80211_STA_FLAG_TDLS_PEER] = { .type = NLA_FLAG }, 3232 }; 3233 3234 static int parse_station_flags(struct genl_info *info, 3235 enum nl80211_iftype iftype, 3236 struct station_parameters *params) 3237 { 3238 struct nlattr *flags[NL80211_STA_FLAG_MAX + 1]; 3239 struct nlattr *nla; 3240 int flag; 3241 3242 /* 3243 * Try parsing the new attribute first so userspace 3244 * can specify both for older kernels. 3245 */ 3246 nla = info->attrs[NL80211_ATTR_STA_FLAGS2]; 3247 if (nla) { 3248 struct nl80211_sta_flag_update *sta_flags; 3249 3250 sta_flags = nla_data(nla); 3251 params->sta_flags_mask = sta_flags->mask; 3252 params->sta_flags_set = sta_flags->set; 3253 params->sta_flags_set &= params->sta_flags_mask; 3254 if ((params->sta_flags_mask | 3255 params->sta_flags_set) & BIT(__NL80211_STA_FLAG_INVALID)) 3256 return -EINVAL; 3257 return 0; 3258 } 3259 3260 /* if present, parse the old attribute */ 3261 3262 nla = info->attrs[NL80211_ATTR_STA_FLAGS]; 3263 if (!nla) 3264 return 0; 3265 3266 if (nla_parse_nested(flags, NL80211_STA_FLAG_MAX, 3267 nla, sta_flags_policy)) 3268 return -EINVAL; 3269 3270 /* 3271 * Only allow certain flags for interface types so that 3272 * other attributes are silently ignored. Remember that 3273 * this is backward compatibility code with old userspace 3274 * and shouldn't be hit in other cases anyway. 3275 */ 3276 switch (iftype) { 3277 case NL80211_IFTYPE_AP: 3278 case NL80211_IFTYPE_AP_VLAN: 3279 case NL80211_IFTYPE_P2P_GO: 3280 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) | 3281 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) | 3282 BIT(NL80211_STA_FLAG_WME) | 3283 BIT(NL80211_STA_FLAG_MFP); 3284 break; 3285 case NL80211_IFTYPE_P2P_CLIENT: 3286 case NL80211_IFTYPE_STATION: 3287 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) | 3288 BIT(NL80211_STA_FLAG_TDLS_PEER); 3289 break; 3290 case NL80211_IFTYPE_MESH_POINT: 3291 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHENTICATED) | 3292 BIT(NL80211_STA_FLAG_MFP) | 3293 BIT(NL80211_STA_FLAG_AUTHORIZED); 3294 default: 3295 return -EINVAL; 3296 } 3297 3298 for (flag = 1; flag <= NL80211_STA_FLAG_MAX; flag++) { 3299 if (flags[flag]) { 3300 params->sta_flags_set |= (1<<flag); 3301 3302 /* no longer support new API additions in old API */ 3303 if (flag > NL80211_STA_FLAG_MAX_OLD_API) 3304 return -EINVAL; 3305 } 3306 } 3307 3308 return 0; 3309 } 3310 3311 static bool nl80211_put_sta_rate(struct sk_buff *msg, struct rate_info *info, 3312 int attr) 3313 { 3314 struct nlattr *rate; 3315 u32 bitrate; 3316 u16 bitrate_compat; 3317 3318 rate = nla_nest_start(msg, attr); 3319 if (!rate) 3320 return false; 3321 3322 /* cfg80211_calculate_bitrate will return 0 for mcs >= 32 */ 3323 bitrate = cfg80211_calculate_bitrate(info); 3324 /* report 16-bit bitrate only if we can */ 3325 bitrate_compat = bitrate < (1UL << 16) ? bitrate : 0; 3326 if (bitrate > 0 && 3327 nla_put_u32(msg, NL80211_RATE_INFO_BITRATE32, bitrate)) 3328 return false; 3329 if (bitrate_compat > 0 && 3330 nla_put_u16(msg, NL80211_RATE_INFO_BITRATE, bitrate_compat)) 3331 return false; 3332 3333 if (info->flags & RATE_INFO_FLAGS_MCS) { 3334 if (nla_put_u8(msg, NL80211_RATE_INFO_MCS, info->mcs)) 3335 return false; 3336 if (info->flags & RATE_INFO_FLAGS_40_MHZ_WIDTH && 3337 nla_put_flag(msg, NL80211_RATE_INFO_40_MHZ_WIDTH)) 3338 return false; 3339 if (info->flags & RATE_INFO_FLAGS_SHORT_GI && 3340 nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI)) 3341 return false; 3342 } else if (info->flags & RATE_INFO_FLAGS_VHT_MCS) { 3343 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_MCS, info->mcs)) 3344 return false; 3345 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_NSS, info->nss)) 3346 return false; 3347 if (info->flags & RATE_INFO_FLAGS_40_MHZ_WIDTH && 3348 nla_put_flag(msg, NL80211_RATE_INFO_40_MHZ_WIDTH)) 3349 return false; 3350 if (info->flags & RATE_INFO_FLAGS_80_MHZ_WIDTH && 3351 nla_put_flag(msg, NL80211_RATE_INFO_80_MHZ_WIDTH)) 3352 return false; 3353 if (info->flags & RATE_INFO_FLAGS_80P80_MHZ_WIDTH && 3354 nla_put_flag(msg, NL80211_RATE_INFO_80P80_MHZ_WIDTH)) 3355 return false; 3356 if (info->flags & RATE_INFO_FLAGS_160_MHZ_WIDTH && 3357 nla_put_flag(msg, NL80211_RATE_INFO_160_MHZ_WIDTH)) 3358 return false; 3359 if (info->flags & RATE_INFO_FLAGS_SHORT_GI && 3360 nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI)) 3361 return false; 3362 } 3363 3364 nla_nest_end(msg, rate); 3365 return true; 3366 } 3367 3368 static int nl80211_send_station(struct sk_buff *msg, u32 portid, u32 seq, 3369 int flags, 3370 struct cfg80211_registered_device *rdev, 3371 struct net_device *dev, 3372 const u8 *mac_addr, struct station_info *sinfo) 3373 { 3374 void *hdr; 3375 struct nlattr *sinfoattr, *bss_param; 3376 3377 hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_STATION); 3378 if (!hdr) 3379 return -1; 3380 3381 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) || 3382 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) || 3383 nla_put_u32(msg, NL80211_ATTR_GENERATION, sinfo->generation)) 3384 goto nla_put_failure; 3385 3386 sinfoattr = nla_nest_start(msg, NL80211_ATTR_STA_INFO); 3387 if (!sinfoattr) 3388 goto nla_put_failure; 3389 if ((sinfo->filled & STATION_INFO_CONNECTED_TIME) && 3390 nla_put_u32(msg, NL80211_STA_INFO_CONNECTED_TIME, 3391 sinfo->connected_time)) 3392 goto nla_put_failure; 3393 if ((sinfo->filled & STATION_INFO_INACTIVE_TIME) && 3394 nla_put_u32(msg, NL80211_STA_INFO_INACTIVE_TIME, 3395 sinfo->inactive_time)) 3396 goto nla_put_failure; 3397 if ((sinfo->filled & (STATION_INFO_RX_BYTES | 3398 STATION_INFO_RX_BYTES64)) && 3399 nla_put_u32(msg, NL80211_STA_INFO_RX_BYTES, 3400 (u32)sinfo->rx_bytes)) 3401 goto nla_put_failure; 3402 if ((sinfo->filled & (STATION_INFO_TX_BYTES | 3403 NL80211_STA_INFO_TX_BYTES64)) && 3404 nla_put_u32(msg, NL80211_STA_INFO_TX_BYTES, 3405 (u32)sinfo->tx_bytes)) 3406 goto nla_put_failure; 3407 if ((sinfo->filled & STATION_INFO_RX_BYTES64) && 3408 nla_put_u64(msg, NL80211_STA_INFO_RX_BYTES64, 3409 sinfo->rx_bytes)) 3410 goto nla_put_failure; 3411 if ((sinfo->filled & STATION_INFO_TX_BYTES64) && 3412 nla_put_u64(msg, NL80211_STA_INFO_TX_BYTES64, 3413 sinfo->tx_bytes)) 3414 goto nla_put_failure; 3415 if ((sinfo->filled & STATION_INFO_LLID) && 3416 nla_put_u16(msg, NL80211_STA_INFO_LLID, sinfo->llid)) 3417 goto nla_put_failure; 3418 if ((sinfo->filled & STATION_INFO_PLID) && 3419 nla_put_u16(msg, NL80211_STA_INFO_PLID, sinfo->plid)) 3420 goto nla_put_failure; 3421 if ((sinfo->filled & STATION_INFO_PLINK_STATE) && 3422 nla_put_u8(msg, NL80211_STA_INFO_PLINK_STATE, 3423 sinfo->plink_state)) 3424 goto nla_put_failure; 3425 switch (rdev->wiphy.signal_type) { 3426 case CFG80211_SIGNAL_TYPE_MBM: 3427 if ((sinfo->filled & STATION_INFO_SIGNAL) && 3428 nla_put_u8(msg, NL80211_STA_INFO_SIGNAL, 3429 sinfo->signal)) 3430 goto nla_put_failure; 3431 if ((sinfo->filled & STATION_INFO_SIGNAL_AVG) && 3432 nla_put_u8(msg, NL80211_STA_INFO_SIGNAL_AVG, 3433 sinfo->signal_avg)) 3434 goto nla_put_failure; 3435 break; 3436 default: 3437 break; 3438 } 3439 if (sinfo->filled & STATION_INFO_TX_BITRATE) { 3440 if (!nl80211_put_sta_rate(msg, &sinfo->txrate, 3441 NL80211_STA_INFO_TX_BITRATE)) 3442 goto nla_put_failure; 3443 } 3444 if (sinfo->filled & STATION_INFO_RX_BITRATE) { 3445 if (!nl80211_put_sta_rate(msg, &sinfo->rxrate, 3446 NL80211_STA_INFO_RX_BITRATE)) 3447 goto nla_put_failure; 3448 } 3449 if ((sinfo->filled & STATION_INFO_RX_PACKETS) && 3450 nla_put_u32(msg, NL80211_STA_INFO_RX_PACKETS, 3451 sinfo->rx_packets)) 3452 goto nla_put_failure; 3453 if ((sinfo->filled & STATION_INFO_TX_PACKETS) && 3454 nla_put_u32(msg, NL80211_STA_INFO_TX_PACKETS, 3455 sinfo->tx_packets)) 3456 goto nla_put_failure; 3457 if ((sinfo->filled & STATION_INFO_TX_RETRIES) && 3458 nla_put_u32(msg, NL80211_STA_INFO_TX_RETRIES, 3459 sinfo->tx_retries)) 3460 goto nla_put_failure; 3461 if ((sinfo->filled & STATION_INFO_TX_FAILED) && 3462 nla_put_u32(msg, NL80211_STA_INFO_TX_FAILED, 3463 sinfo->tx_failed)) 3464 goto nla_put_failure; 3465 if ((sinfo->filled & STATION_INFO_BEACON_LOSS_COUNT) && 3466 nla_put_u32(msg, NL80211_STA_INFO_BEACON_LOSS, 3467 sinfo->beacon_loss_count)) 3468 goto nla_put_failure; 3469 if ((sinfo->filled & STATION_INFO_LOCAL_PM) && 3470 nla_put_u32(msg, NL80211_STA_INFO_LOCAL_PM, 3471 sinfo->local_pm)) 3472 goto nla_put_failure; 3473 if ((sinfo->filled & STATION_INFO_PEER_PM) && 3474 nla_put_u32(msg, NL80211_STA_INFO_PEER_PM, 3475 sinfo->peer_pm)) 3476 goto nla_put_failure; 3477 if ((sinfo->filled & STATION_INFO_NONPEER_PM) && 3478 nla_put_u32(msg, NL80211_STA_INFO_NONPEER_PM, 3479 sinfo->nonpeer_pm)) 3480 goto nla_put_failure; 3481 if (sinfo->filled & STATION_INFO_BSS_PARAM) { 3482 bss_param = nla_nest_start(msg, NL80211_STA_INFO_BSS_PARAM); 3483 if (!bss_param) 3484 goto nla_put_failure; 3485 3486 if (((sinfo->bss_param.flags & BSS_PARAM_FLAGS_CTS_PROT) && 3487 nla_put_flag(msg, NL80211_STA_BSS_PARAM_CTS_PROT)) || 3488 ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_PREAMBLE) && 3489 nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_PREAMBLE)) || 3490 ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_SLOT_TIME) && 3491 nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_SLOT_TIME)) || 3492 nla_put_u8(msg, NL80211_STA_BSS_PARAM_DTIM_PERIOD, 3493 sinfo->bss_param.dtim_period) || 3494 nla_put_u16(msg, NL80211_STA_BSS_PARAM_BEACON_INTERVAL, 3495 sinfo->bss_param.beacon_interval)) 3496 goto nla_put_failure; 3497 3498 nla_nest_end(msg, bss_param); 3499 } 3500 if ((sinfo->filled & STATION_INFO_STA_FLAGS) && 3501 nla_put(msg, NL80211_STA_INFO_STA_FLAGS, 3502 sizeof(struct nl80211_sta_flag_update), 3503 &sinfo->sta_flags)) 3504 goto nla_put_failure; 3505 if ((sinfo->filled & STATION_INFO_T_OFFSET) && 3506 nla_put_u64(msg, NL80211_STA_INFO_T_OFFSET, 3507 sinfo->t_offset)) 3508 goto nla_put_failure; 3509 nla_nest_end(msg, sinfoattr); 3510 3511 if ((sinfo->filled & STATION_INFO_ASSOC_REQ_IES) && 3512 nla_put(msg, NL80211_ATTR_IE, sinfo->assoc_req_ies_len, 3513 sinfo->assoc_req_ies)) 3514 goto nla_put_failure; 3515 3516 return genlmsg_end(msg, hdr); 3517 3518 nla_put_failure: 3519 genlmsg_cancel(msg, hdr); 3520 return -EMSGSIZE; 3521 } 3522 3523 static int nl80211_dump_station(struct sk_buff *skb, 3524 struct netlink_callback *cb) 3525 { 3526 struct station_info sinfo; 3527 struct cfg80211_registered_device *dev; 3528 struct net_device *netdev; 3529 u8 mac_addr[ETH_ALEN]; 3530 int sta_idx = cb->args[1]; 3531 int err; 3532 3533 err = nl80211_prepare_netdev_dump(skb, cb, &dev, &netdev); 3534 if (err) 3535 return err; 3536 3537 if (!dev->ops->dump_station) { 3538 err = -EOPNOTSUPP; 3539 goto out_err; 3540 } 3541 3542 while (1) { 3543 memset(&sinfo, 0, sizeof(sinfo)); 3544 err = rdev_dump_station(dev, netdev, sta_idx, 3545 mac_addr, &sinfo); 3546 if (err == -ENOENT) 3547 break; 3548 if (err) 3549 goto out_err; 3550 3551 if (nl80211_send_station(skb, 3552 NETLINK_CB(cb->skb).portid, 3553 cb->nlh->nlmsg_seq, NLM_F_MULTI, 3554 dev, netdev, mac_addr, 3555 &sinfo) < 0) 3556 goto out; 3557 3558 sta_idx++; 3559 } 3560 3561 3562 out: 3563 cb->args[1] = sta_idx; 3564 err = skb->len; 3565 out_err: 3566 nl80211_finish_netdev_dump(dev); 3567 3568 return err; 3569 } 3570 3571 static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info) 3572 { 3573 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 3574 struct net_device *dev = info->user_ptr[1]; 3575 struct station_info sinfo; 3576 struct sk_buff *msg; 3577 u8 *mac_addr = NULL; 3578 int err; 3579 3580 memset(&sinfo, 0, sizeof(sinfo)); 3581 3582 if (!info->attrs[NL80211_ATTR_MAC]) 3583 return -EINVAL; 3584 3585 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]); 3586 3587 if (!rdev->ops->get_station) 3588 return -EOPNOTSUPP; 3589 3590 err = rdev_get_station(rdev, dev, mac_addr, &sinfo); 3591 if (err) 3592 return err; 3593 3594 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 3595 if (!msg) 3596 return -ENOMEM; 3597 3598 if (nl80211_send_station(msg, info->snd_portid, info->snd_seq, 0, 3599 rdev, dev, mac_addr, &sinfo) < 0) { 3600 nlmsg_free(msg); 3601 return -ENOBUFS; 3602 } 3603 3604 return genlmsg_reply(msg, info); 3605 } 3606 3607 int cfg80211_check_station_change(struct wiphy *wiphy, 3608 struct station_parameters *params, 3609 enum cfg80211_station_type statype) 3610 { 3611 if (params->listen_interval != -1) 3612 return -EINVAL; 3613 if (params->aid) 3614 return -EINVAL; 3615 3616 /* When you run into this, adjust the code below for the new flag */ 3617 BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7); 3618 3619 switch (statype) { 3620 case CFG80211_STA_MESH_PEER_KERNEL: 3621 case CFG80211_STA_MESH_PEER_USER: 3622 /* 3623 * No ignoring the TDLS flag here -- the userspace mesh 3624 * code doesn't have the bug of including TDLS in the 3625 * mask everywhere. 3626 */ 3627 if (params->sta_flags_mask & 3628 ~(BIT(NL80211_STA_FLAG_AUTHENTICATED) | 3629 BIT(NL80211_STA_FLAG_MFP) | 3630 BIT(NL80211_STA_FLAG_AUTHORIZED))) 3631 return -EINVAL; 3632 break; 3633 case CFG80211_STA_TDLS_PEER_SETUP: 3634 case CFG80211_STA_TDLS_PEER_ACTIVE: 3635 if (!(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))) 3636 return -EINVAL; 3637 /* ignore since it can't change */ 3638 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER); 3639 break; 3640 default: 3641 /* disallow mesh-specific things */ 3642 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION) 3643 return -EINVAL; 3644 if (params->local_pm) 3645 return -EINVAL; 3646 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE) 3647 return -EINVAL; 3648 } 3649 3650 if (statype != CFG80211_STA_TDLS_PEER_SETUP && 3651 statype != CFG80211_STA_TDLS_PEER_ACTIVE) { 3652 /* TDLS can't be set, ... */ 3653 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) 3654 return -EINVAL; 3655 /* 3656 * ... but don't bother the driver with it. This works around 3657 * a hostapd/wpa_supplicant issue -- it always includes the 3658 * TLDS_PEER flag in the mask even for AP mode. 3659 */ 3660 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER); 3661 } 3662 3663 if (statype != CFG80211_STA_TDLS_PEER_SETUP) { 3664 /* reject other things that can't change */ 3665 if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD) 3666 return -EINVAL; 3667 if (params->sta_modify_mask & STATION_PARAM_APPLY_CAPABILITY) 3668 return -EINVAL; 3669 if (params->supported_rates) 3670 return -EINVAL; 3671 if (params->ext_capab || params->ht_capa || params->vht_capa) 3672 return -EINVAL; 3673 } 3674 3675 if (statype != CFG80211_STA_AP_CLIENT) { 3676 if (params->vlan) 3677 return -EINVAL; 3678 } 3679 3680 switch (statype) { 3681 case CFG80211_STA_AP_MLME_CLIENT: 3682 /* Use this only for authorizing/unauthorizing a station */ 3683 if (!(params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED))) 3684 return -EOPNOTSUPP; 3685 break; 3686 case CFG80211_STA_AP_CLIENT: 3687 /* accept only the listed bits */ 3688 if (params->sta_flags_mask & 3689 ~(BIT(NL80211_STA_FLAG_AUTHORIZED) | 3690 BIT(NL80211_STA_FLAG_AUTHENTICATED) | 3691 BIT(NL80211_STA_FLAG_ASSOCIATED) | 3692 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) | 3693 BIT(NL80211_STA_FLAG_WME) | 3694 BIT(NL80211_STA_FLAG_MFP))) 3695 return -EINVAL; 3696 3697 /* but authenticated/associated only if driver handles it */ 3698 if (!(wiphy->features & NL80211_FEATURE_FULL_AP_CLIENT_STATE) && 3699 params->sta_flags_mask & 3700 (BIT(NL80211_STA_FLAG_AUTHENTICATED) | 3701 BIT(NL80211_STA_FLAG_ASSOCIATED))) 3702 return -EINVAL; 3703 break; 3704 case CFG80211_STA_IBSS: 3705 case CFG80211_STA_AP_STA: 3706 /* reject any changes other than AUTHORIZED */ 3707 if (params->sta_flags_mask & ~BIT(NL80211_STA_FLAG_AUTHORIZED)) 3708 return -EINVAL; 3709 break; 3710 case CFG80211_STA_TDLS_PEER_SETUP: 3711 /* reject any changes other than AUTHORIZED or WME */ 3712 if (params->sta_flags_mask & ~(BIT(NL80211_STA_FLAG_AUTHORIZED) | 3713 BIT(NL80211_STA_FLAG_WME))) 3714 return -EINVAL; 3715 /* force (at least) rates when authorizing */ 3716 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_AUTHORIZED) && 3717 !params->supported_rates) 3718 return -EINVAL; 3719 break; 3720 case CFG80211_STA_TDLS_PEER_ACTIVE: 3721 /* reject any changes */ 3722 return -EINVAL; 3723 case CFG80211_STA_MESH_PEER_KERNEL: 3724 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE) 3725 return -EINVAL; 3726 break; 3727 case CFG80211_STA_MESH_PEER_USER: 3728 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION) 3729 return -EINVAL; 3730 break; 3731 } 3732 3733 return 0; 3734 } 3735 EXPORT_SYMBOL(cfg80211_check_station_change); 3736 3737 /* 3738 * Get vlan interface making sure it is running and on the right wiphy. 3739 */ 3740 static struct net_device *get_vlan(struct genl_info *info, 3741 struct cfg80211_registered_device *rdev) 3742 { 3743 struct nlattr *vlanattr = info->attrs[NL80211_ATTR_STA_VLAN]; 3744 struct net_device *v; 3745 int ret; 3746 3747 if (!vlanattr) 3748 return NULL; 3749 3750 v = dev_get_by_index(genl_info_net(info), nla_get_u32(vlanattr)); 3751 if (!v) 3752 return ERR_PTR(-ENODEV); 3753 3754 if (!v->ieee80211_ptr || v->ieee80211_ptr->wiphy != &rdev->wiphy) { 3755 ret = -EINVAL; 3756 goto error; 3757 } 3758 3759 if (v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN && 3760 v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP && 3761 v->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) { 3762 ret = -EINVAL; 3763 goto error; 3764 } 3765 3766 if (!netif_running(v)) { 3767 ret = -ENETDOWN; 3768 goto error; 3769 } 3770 3771 return v; 3772 error: 3773 dev_put(v); 3774 return ERR_PTR(ret); 3775 } 3776 3777 static struct nla_policy 3778 nl80211_sta_wme_policy[NL80211_STA_WME_MAX + 1] __read_mostly = { 3779 [NL80211_STA_WME_UAPSD_QUEUES] = { .type = NLA_U8 }, 3780 [NL80211_STA_WME_MAX_SP] = { .type = NLA_U8 }, 3781 }; 3782 3783 static int nl80211_parse_sta_wme(struct genl_info *info, 3784 struct station_parameters *params) 3785 { 3786 struct nlattr *tb[NL80211_STA_WME_MAX + 1]; 3787 struct nlattr *nla; 3788 int err; 3789 3790 /* parse WME attributes if present */ 3791 if (!info->attrs[NL80211_ATTR_STA_WME]) 3792 return 0; 3793 3794 nla = info->attrs[NL80211_ATTR_STA_WME]; 3795 err = nla_parse_nested(tb, NL80211_STA_WME_MAX, nla, 3796 nl80211_sta_wme_policy); 3797 if (err) 3798 return err; 3799 3800 if (tb[NL80211_STA_WME_UAPSD_QUEUES]) 3801 params->uapsd_queues = nla_get_u8( 3802 tb[NL80211_STA_WME_UAPSD_QUEUES]); 3803 if (params->uapsd_queues & ~IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK) 3804 return -EINVAL; 3805 3806 if (tb[NL80211_STA_WME_MAX_SP]) 3807 params->max_sp = nla_get_u8(tb[NL80211_STA_WME_MAX_SP]); 3808 3809 if (params->max_sp & ~IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK) 3810 return -EINVAL; 3811 3812 params->sta_modify_mask |= STATION_PARAM_APPLY_UAPSD; 3813 3814 return 0; 3815 } 3816 3817 static int nl80211_set_station_tdls(struct genl_info *info, 3818 struct station_parameters *params) 3819 { 3820 /* Dummy STA entry gets updated once the peer capabilities are known */ 3821 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) 3822 params->ht_capa = 3823 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]); 3824 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) 3825 params->vht_capa = 3826 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]); 3827 3828 return nl80211_parse_sta_wme(info, params); 3829 } 3830 3831 static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info) 3832 { 3833 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 3834 struct net_device *dev = info->user_ptr[1]; 3835 struct station_parameters params; 3836 u8 *mac_addr; 3837 int err; 3838 3839 memset(¶ms, 0, sizeof(params)); 3840 3841 params.listen_interval = -1; 3842 3843 if (!rdev->ops->change_station) 3844 return -EOPNOTSUPP; 3845 3846 if (info->attrs[NL80211_ATTR_STA_AID]) 3847 return -EINVAL; 3848 3849 if (!info->attrs[NL80211_ATTR_MAC]) 3850 return -EINVAL; 3851 3852 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]); 3853 3854 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) { 3855 params.supported_rates = 3856 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]); 3857 params.supported_rates_len = 3858 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]); 3859 } 3860 3861 if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) { 3862 params.capability = 3863 nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]); 3864 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY; 3865 } 3866 3867 if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) { 3868 params.ext_capab = 3869 nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]); 3870 params.ext_capab_len = 3871 nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]); 3872 } 3873 3874 if (info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]) 3875 return -EINVAL; 3876 3877 if (parse_station_flags(info, dev->ieee80211_ptr->iftype, ¶ms)) 3878 return -EINVAL; 3879 3880 if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION]) { 3881 params.plink_action = 3882 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]); 3883 if (params.plink_action >= NUM_NL80211_PLINK_ACTIONS) 3884 return -EINVAL; 3885 } 3886 3887 if (info->attrs[NL80211_ATTR_STA_PLINK_STATE]) { 3888 params.plink_state = 3889 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_STATE]); 3890 if (params.plink_state >= NUM_NL80211_PLINK_STATES) 3891 return -EINVAL; 3892 params.sta_modify_mask |= STATION_PARAM_APPLY_PLINK_STATE; 3893 } 3894 3895 if (info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]) { 3896 enum nl80211_mesh_power_mode pm = nla_get_u32( 3897 info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]); 3898 3899 if (pm <= NL80211_MESH_POWER_UNKNOWN || 3900 pm > NL80211_MESH_POWER_MAX) 3901 return -EINVAL; 3902 3903 params.local_pm = pm; 3904 } 3905 3906 /* Include parameters for TDLS peer (will check later) */ 3907 err = nl80211_set_station_tdls(info, ¶ms); 3908 if (err) 3909 return err; 3910 3911 params.vlan = get_vlan(info, rdev); 3912 if (IS_ERR(params.vlan)) 3913 return PTR_ERR(params.vlan); 3914 3915 switch (dev->ieee80211_ptr->iftype) { 3916 case NL80211_IFTYPE_AP: 3917 case NL80211_IFTYPE_AP_VLAN: 3918 case NL80211_IFTYPE_P2P_GO: 3919 case NL80211_IFTYPE_P2P_CLIENT: 3920 case NL80211_IFTYPE_STATION: 3921 case NL80211_IFTYPE_ADHOC: 3922 case NL80211_IFTYPE_MESH_POINT: 3923 break; 3924 default: 3925 err = -EOPNOTSUPP; 3926 goto out_put_vlan; 3927 } 3928 3929 /* driver will call cfg80211_check_station_change() */ 3930 err = rdev_change_station(rdev, dev, mac_addr, ¶ms); 3931 3932 out_put_vlan: 3933 if (params.vlan) 3934 dev_put(params.vlan); 3935 3936 return err; 3937 } 3938 3939 static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info) 3940 { 3941 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 3942 int err; 3943 struct net_device *dev = info->user_ptr[1]; 3944 struct station_parameters params; 3945 u8 *mac_addr = NULL; 3946 3947 memset(¶ms, 0, sizeof(params)); 3948 3949 if (!rdev->ops->add_station) 3950 return -EOPNOTSUPP; 3951 3952 if (!info->attrs[NL80211_ATTR_MAC]) 3953 return -EINVAL; 3954 3955 if (!info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]) 3956 return -EINVAL; 3957 3958 if (!info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) 3959 return -EINVAL; 3960 3961 if (!info->attrs[NL80211_ATTR_STA_AID]) 3962 return -EINVAL; 3963 3964 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]); 3965 params.supported_rates = 3966 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]); 3967 params.supported_rates_len = 3968 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]); 3969 params.listen_interval = 3970 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]); 3971 3972 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]); 3973 if (!params.aid || params.aid > IEEE80211_MAX_AID) 3974 return -EINVAL; 3975 3976 if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) { 3977 params.capability = 3978 nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]); 3979 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY; 3980 } 3981 3982 if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) { 3983 params.ext_capab = 3984 nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]); 3985 params.ext_capab_len = 3986 nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]); 3987 } 3988 3989 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) 3990 params.ht_capa = 3991 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]); 3992 3993 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) 3994 params.vht_capa = 3995 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]); 3996 3997 if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION]) { 3998 params.plink_action = 3999 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]); 4000 if (params.plink_action >= NUM_NL80211_PLINK_ACTIONS) 4001 return -EINVAL; 4002 } 4003 4004 err = nl80211_parse_sta_wme(info, ¶ms); 4005 if (err) 4006 return err; 4007 4008 if (parse_station_flags(info, dev->ieee80211_ptr->iftype, ¶ms)) 4009 return -EINVAL; 4010 4011 /* When you run into this, adjust the code below for the new flag */ 4012 BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7); 4013 4014 switch (dev->ieee80211_ptr->iftype) { 4015 case NL80211_IFTYPE_AP: 4016 case NL80211_IFTYPE_AP_VLAN: 4017 case NL80211_IFTYPE_P2P_GO: 4018 /* ignore WME attributes if iface/sta is not capable */ 4019 if (!(rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) || 4020 !(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME))) 4021 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD; 4022 4023 /* TDLS peers cannot be added */ 4024 if (params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) 4025 return -EINVAL; 4026 /* but don't bother the driver with it */ 4027 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER); 4028 4029 /* allow authenticated/associated only if driver handles it */ 4030 if (!(rdev->wiphy.features & 4031 NL80211_FEATURE_FULL_AP_CLIENT_STATE) && 4032 params.sta_flags_mask & 4033 (BIT(NL80211_STA_FLAG_AUTHENTICATED) | 4034 BIT(NL80211_STA_FLAG_ASSOCIATED))) 4035 return -EINVAL; 4036 4037 /* must be last in here for error handling */ 4038 params.vlan = get_vlan(info, rdev); 4039 if (IS_ERR(params.vlan)) 4040 return PTR_ERR(params.vlan); 4041 break; 4042 case NL80211_IFTYPE_MESH_POINT: 4043 /* ignore uAPSD data */ 4044 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD; 4045 4046 /* associated is disallowed */ 4047 if (params.sta_flags_mask & BIT(NL80211_STA_FLAG_ASSOCIATED)) 4048 return -EINVAL; 4049 /* TDLS peers cannot be added */ 4050 if (params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) 4051 return -EINVAL; 4052 break; 4053 case NL80211_IFTYPE_STATION: 4054 case NL80211_IFTYPE_P2P_CLIENT: 4055 /* ignore uAPSD data */ 4056 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD; 4057 4058 /* these are disallowed */ 4059 if (params.sta_flags_mask & 4060 (BIT(NL80211_STA_FLAG_ASSOCIATED) | 4061 BIT(NL80211_STA_FLAG_AUTHENTICATED))) 4062 return -EINVAL; 4063 /* Only TDLS peers can be added */ 4064 if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))) 4065 return -EINVAL; 4066 /* Can only add if TDLS ... */ 4067 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS)) 4068 return -EOPNOTSUPP; 4069 /* ... with external setup is supported */ 4070 if (!(rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP)) 4071 return -EOPNOTSUPP; 4072 /* 4073 * Older wpa_supplicant versions always mark the TDLS peer 4074 * as authorized, but it shouldn't yet be. 4075 */ 4076 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_AUTHORIZED); 4077 break; 4078 default: 4079 return -EOPNOTSUPP; 4080 } 4081 4082 /* be aware of params.vlan when changing code here */ 4083 4084 err = rdev_add_station(rdev, dev, mac_addr, ¶ms); 4085 4086 if (params.vlan) 4087 dev_put(params.vlan); 4088 return err; 4089 } 4090 4091 static int nl80211_del_station(struct sk_buff *skb, struct genl_info *info) 4092 { 4093 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 4094 struct net_device *dev = info->user_ptr[1]; 4095 u8 *mac_addr = NULL; 4096 4097 if (info->attrs[NL80211_ATTR_MAC]) 4098 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]); 4099 4100 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP && 4101 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN && 4102 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT && 4103 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) 4104 return -EINVAL; 4105 4106 if (!rdev->ops->del_station) 4107 return -EOPNOTSUPP; 4108 4109 return rdev_del_station(rdev, dev, mac_addr); 4110 } 4111 4112 static int nl80211_send_mpath(struct sk_buff *msg, u32 portid, u32 seq, 4113 int flags, struct net_device *dev, 4114 u8 *dst, u8 *next_hop, 4115 struct mpath_info *pinfo) 4116 { 4117 void *hdr; 4118 struct nlattr *pinfoattr; 4119 4120 hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_STATION); 4121 if (!hdr) 4122 return -1; 4123 4124 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) || 4125 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, dst) || 4126 nla_put(msg, NL80211_ATTR_MPATH_NEXT_HOP, ETH_ALEN, next_hop) || 4127 nla_put_u32(msg, NL80211_ATTR_GENERATION, pinfo->generation)) 4128 goto nla_put_failure; 4129 4130 pinfoattr = nla_nest_start(msg, NL80211_ATTR_MPATH_INFO); 4131 if (!pinfoattr) 4132 goto nla_put_failure; 4133 if ((pinfo->filled & MPATH_INFO_FRAME_QLEN) && 4134 nla_put_u32(msg, NL80211_MPATH_INFO_FRAME_QLEN, 4135 pinfo->frame_qlen)) 4136 goto nla_put_failure; 4137 if (((pinfo->filled & MPATH_INFO_SN) && 4138 nla_put_u32(msg, NL80211_MPATH_INFO_SN, pinfo->sn)) || 4139 ((pinfo->filled & MPATH_INFO_METRIC) && 4140 nla_put_u32(msg, NL80211_MPATH_INFO_METRIC, 4141 pinfo->metric)) || 4142 ((pinfo->filled & MPATH_INFO_EXPTIME) && 4143 nla_put_u32(msg, NL80211_MPATH_INFO_EXPTIME, 4144 pinfo->exptime)) || 4145 ((pinfo->filled & MPATH_INFO_FLAGS) && 4146 nla_put_u8(msg, NL80211_MPATH_INFO_FLAGS, 4147 pinfo->flags)) || 4148 ((pinfo->filled & MPATH_INFO_DISCOVERY_TIMEOUT) && 4149 nla_put_u32(msg, NL80211_MPATH_INFO_DISCOVERY_TIMEOUT, 4150 pinfo->discovery_timeout)) || 4151 ((pinfo->filled & MPATH_INFO_DISCOVERY_RETRIES) && 4152 nla_put_u8(msg, NL80211_MPATH_INFO_DISCOVERY_RETRIES, 4153 pinfo->discovery_retries))) 4154 goto nla_put_failure; 4155 4156 nla_nest_end(msg, pinfoattr); 4157 4158 return genlmsg_end(msg, hdr); 4159 4160 nla_put_failure: 4161 genlmsg_cancel(msg, hdr); 4162 return -EMSGSIZE; 4163 } 4164 4165 static int nl80211_dump_mpath(struct sk_buff *skb, 4166 struct netlink_callback *cb) 4167 { 4168 struct mpath_info pinfo; 4169 struct cfg80211_registered_device *dev; 4170 struct net_device *netdev; 4171 u8 dst[ETH_ALEN]; 4172 u8 next_hop[ETH_ALEN]; 4173 int path_idx = cb->args[1]; 4174 int err; 4175 4176 err = nl80211_prepare_netdev_dump(skb, cb, &dev, &netdev); 4177 if (err) 4178 return err; 4179 4180 if (!dev->ops->dump_mpath) { 4181 err = -EOPNOTSUPP; 4182 goto out_err; 4183 } 4184 4185 if (netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT) { 4186 err = -EOPNOTSUPP; 4187 goto out_err; 4188 } 4189 4190 while (1) { 4191 err = rdev_dump_mpath(dev, netdev, path_idx, dst, next_hop, 4192 &pinfo); 4193 if (err == -ENOENT) 4194 break; 4195 if (err) 4196 goto out_err; 4197 4198 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid, 4199 cb->nlh->nlmsg_seq, NLM_F_MULTI, 4200 netdev, dst, next_hop, 4201 &pinfo) < 0) 4202 goto out; 4203 4204 path_idx++; 4205 } 4206 4207 4208 out: 4209 cb->args[1] = path_idx; 4210 err = skb->len; 4211 out_err: 4212 nl80211_finish_netdev_dump(dev); 4213 return err; 4214 } 4215 4216 static int nl80211_get_mpath(struct sk_buff *skb, struct genl_info *info) 4217 { 4218 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 4219 int err; 4220 struct net_device *dev = info->user_ptr[1]; 4221 struct mpath_info pinfo; 4222 struct sk_buff *msg; 4223 u8 *dst = NULL; 4224 u8 next_hop[ETH_ALEN]; 4225 4226 memset(&pinfo, 0, sizeof(pinfo)); 4227 4228 if (!info->attrs[NL80211_ATTR_MAC]) 4229 return -EINVAL; 4230 4231 dst = nla_data(info->attrs[NL80211_ATTR_MAC]); 4232 4233 if (!rdev->ops->get_mpath) 4234 return -EOPNOTSUPP; 4235 4236 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT) 4237 return -EOPNOTSUPP; 4238 4239 err = rdev_get_mpath(rdev, dev, dst, next_hop, &pinfo); 4240 if (err) 4241 return err; 4242 4243 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 4244 if (!msg) 4245 return -ENOMEM; 4246 4247 if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0, 4248 dev, dst, next_hop, &pinfo) < 0) { 4249 nlmsg_free(msg); 4250 return -ENOBUFS; 4251 } 4252 4253 return genlmsg_reply(msg, info); 4254 } 4255 4256 static int nl80211_set_mpath(struct sk_buff *skb, struct genl_info *info) 4257 { 4258 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 4259 struct net_device *dev = info->user_ptr[1]; 4260 u8 *dst = NULL; 4261 u8 *next_hop = NULL; 4262 4263 if (!info->attrs[NL80211_ATTR_MAC]) 4264 return -EINVAL; 4265 4266 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]) 4267 return -EINVAL; 4268 4269 dst = nla_data(info->attrs[NL80211_ATTR_MAC]); 4270 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]); 4271 4272 if (!rdev->ops->change_mpath) 4273 return -EOPNOTSUPP; 4274 4275 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT) 4276 return -EOPNOTSUPP; 4277 4278 return rdev_change_mpath(rdev, dev, dst, next_hop); 4279 } 4280 4281 static int nl80211_new_mpath(struct sk_buff *skb, struct genl_info *info) 4282 { 4283 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 4284 struct net_device *dev = info->user_ptr[1]; 4285 u8 *dst = NULL; 4286 u8 *next_hop = NULL; 4287 4288 if (!info->attrs[NL80211_ATTR_MAC]) 4289 return -EINVAL; 4290 4291 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]) 4292 return -EINVAL; 4293 4294 dst = nla_data(info->attrs[NL80211_ATTR_MAC]); 4295 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]); 4296 4297 if (!rdev->ops->add_mpath) 4298 return -EOPNOTSUPP; 4299 4300 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT) 4301 return -EOPNOTSUPP; 4302 4303 return rdev_add_mpath(rdev, dev, dst, next_hop); 4304 } 4305 4306 static int nl80211_del_mpath(struct sk_buff *skb, struct genl_info *info) 4307 { 4308 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 4309 struct net_device *dev = info->user_ptr[1]; 4310 u8 *dst = NULL; 4311 4312 if (info->attrs[NL80211_ATTR_MAC]) 4313 dst = nla_data(info->attrs[NL80211_ATTR_MAC]); 4314 4315 if (!rdev->ops->del_mpath) 4316 return -EOPNOTSUPP; 4317 4318 return rdev_del_mpath(rdev, dev, dst); 4319 } 4320 4321 static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info) 4322 { 4323 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 4324 struct net_device *dev = info->user_ptr[1]; 4325 struct bss_parameters params; 4326 4327 memset(¶ms, 0, sizeof(params)); 4328 /* default to not changing parameters */ 4329 params.use_cts_prot = -1; 4330 params.use_short_preamble = -1; 4331 params.use_short_slot_time = -1; 4332 params.ap_isolate = -1; 4333 params.ht_opmode = -1; 4334 params.p2p_ctwindow = -1; 4335 params.p2p_opp_ps = -1; 4336 4337 if (info->attrs[NL80211_ATTR_BSS_CTS_PROT]) 4338 params.use_cts_prot = 4339 nla_get_u8(info->attrs[NL80211_ATTR_BSS_CTS_PROT]); 4340 if (info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]) 4341 params.use_short_preamble = 4342 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]); 4343 if (info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]) 4344 params.use_short_slot_time = 4345 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]); 4346 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) { 4347 params.basic_rates = 4348 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]); 4349 params.basic_rates_len = 4350 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]); 4351 } 4352 if (info->attrs[NL80211_ATTR_AP_ISOLATE]) 4353 params.ap_isolate = !!nla_get_u8(info->attrs[NL80211_ATTR_AP_ISOLATE]); 4354 if (info->attrs[NL80211_ATTR_BSS_HT_OPMODE]) 4355 params.ht_opmode = 4356 nla_get_u16(info->attrs[NL80211_ATTR_BSS_HT_OPMODE]); 4357 4358 if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) { 4359 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) 4360 return -EINVAL; 4361 params.p2p_ctwindow = 4362 nla_get_s8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]); 4363 if (params.p2p_ctwindow < 0) 4364 return -EINVAL; 4365 if (params.p2p_ctwindow != 0 && 4366 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN)) 4367 return -EINVAL; 4368 } 4369 4370 if (info->attrs[NL80211_ATTR_P2P_OPPPS]) { 4371 u8 tmp; 4372 4373 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) 4374 return -EINVAL; 4375 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]); 4376 if (tmp > 1) 4377 return -EINVAL; 4378 params.p2p_opp_ps = tmp; 4379 if (params.p2p_opp_ps && 4380 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS)) 4381 return -EINVAL; 4382 } 4383 4384 if (!rdev->ops->change_bss) 4385 return -EOPNOTSUPP; 4386 4387 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP && 4388 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) 4389 return -EOPNOTSUPP; 4390 4391 return rdev_change_bss(rdev, dev, ¶ms); 4392 } 4393 4394 static const struct nla_policy reg_rule_policy[NL80211_REG_RULE_ATTR_MAX + 1] = { 4395 [NL80211_ATTR_REG_RULE_FLAGS] = { .type = NLA_U32 }, 4396 [NL80211_ATTR_FREQ_RANGE_START] = { .type = NLA_U32 }, 4397 [NL80211_ATTR_FREQ_RANGE_END] = { .type = NLA_U32 }, 4398 [NL80211_ATTR_FREQ_RANGE_MAX_BW] = { .type = NLA_U32 }, 4399 [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN] = { .type = NLA_U32 }, 4400 [NL80211_ATTR_POWER_RULE_MAX_EIRP] = { .type = NLA_U32 }, 4401 }; 4402 4403 static int parse_reg_rule(struct nlattr *tb[], 4404 struct ieee80211_reg_rule *reg_rule) 4405 { 4406 struct ieee80211_freq_range *freq_range = ®_rule->freq_range; 4407 struct ieee80211_power_rule *power_rule = ®_rule->power_rule; 4408 4409 if (!tb[NL80211_ATTR_REG_RULE_FLAGS]) 4410 return -EINVAL; 4411 if (!tb[NL80211_ATTR_FREQ_RANGE_START]) 4412 return -EINVAL; 4413 if (!tb[NL80211_ATTR_FREQ_RANGE_END]) 4414 return -EINVAL; 4415 if (!tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]) 4416 return -EINVAL; 4417 if (!tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]) 4418 return -EINVAL; 4419 4420 reg_rule->flags = nla_get_u32(tb[NL80211_ATTR_REG_RULE_FLAGS]); 4421 4422 freq_range->start_freq_khz = 4423 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]); 4424 freq_range->end_freq_khz = 4425 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]); 4426 freq_range->max_bandwidth_khz = 4427 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]); 4428 4429 power_rule->max_eirp = 4430 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]); 4431 4432 if (tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]) 4433 power_rule->max_antenna_gain = 4434 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]); 4435 4436 return 0; 4437 } 4438 4439 static int nl80211_req_set_reg(struct sk_buff *skb, struct genl_info *info) 4440 { 4441 int r; 4442 char *data = NULL; 4443 enum nl80211_user_reg_hint_type user_reg_hint_type; 4444 4445 /* 4446 * You should only get this when cfg80211 hasn't yet initialized 4447 * completely when built-in to the kernel right between the time 4448 * window between nl80211_init() and regulatory_init(), if that is 4449 * even possible. 4450 */ 4451 if (unlikely(!rcu_access_pointer(cfg80211_regdomain))) 4452 return -EINPROGRESS; 4453 4454 if (!info->attrs[NL80211_ATTR_REG_ALPHA2]) 4455 return -EINVAL; 4456 4457 data = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]); 4458 4459 if (info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE]) 4460 user_reg_hint_type = 4461 nla_get_u32(info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE]); 4462 else 4463 user_reg_hint_type = NL80211_USER_REG_HINT_USER; 4464 4465 switch (user_reg_hint_type) { 4466 case NL80211_USER_REG_HINT_USER: 4467 case NL80211_USER_REG_HINT_CELL_BASE: 4468 break; 4469 default: 4470 return -EINVAL; 4471 } 4472 4473 r = regulatory_hint_user(data, user_reg_hint_type); 4474 4475 return r; 4476 } 4477 4478 static int nl80211_get_mesh_config(struct sk_buff *skb, 4479 struct genl_info *info) 4480 { 4481 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 4482 struct net_device *dev = info->user_ptr[1]; 4483 struct wireless_dev *wdev = dev->ieee80211_ptr; 4484 struct mesh_config cur_params; 4485 int err = 0; 4486 void *hdr; 4487 struct nlattr *pinfoattr; 4488 struct sk_buff *msg; 4489 4490 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) 4491 return -EOPNOTSUPP; 4492 4493 if (!rdev->ops->get_mesh_config) 4494 return -EOPNOTSUPP; 4495 4496 wdev_lock(wdev); 4497 /* If not connected, get default parameters */ 4498 if (!wdev->mesh_id_len) 4499 memcpy(&cur_params, &default_mesh_config, sizeof(cur_params)); 4500 else 4501 err = rdev_get_mesh_config(rdev, dev, &cur_params); 4502 wdev_unlock(wdev); 4503 4504 if (err) 4505 return err; 4506 4507 /* Draw up a netlink message to send back */ 4508 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 4509 if (!msg) 4510 return -ENOMEM; 4511 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0, 4512 NL80211_CMD_GET_MESH_CONFIG); 4513 if (!hdr) 4514 goto out; 4515 pinfoattr = nla_nest_start(msg, NL80211_ATTR_MESH_CONFIG); 4516 if (!pinfoattr) 4517 goto nla_put_failure; 4518 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) || 4519 nla_put_u16(msg, NL80211_MESHCONF_RETRY_TIMEOUT, 4520 cur_params.dot11MeshRetryTimeout) || 4521 nla_put_u16(msg, NL80211_MESHCONF_CONFIRM_TIMEOUT, 4522 cur_params.dot11MeshConfirmTimeout) || 4523 nla_put_u16(msg, NL80211_MESHCONF_HOLDING_TIMEOUT, 4524 cur_params.dot11MeshHoldingTimeout) || 4525 nla_put_u16(msg, NL80211_MESHCONF_MAX_PEER_LINKS, 4526 cur_params.dot11MeshMaxPeerLinks) || 4527 nla_put_u8(msg, NL80211_MESHCONF_MAX_RETRIES, 4528 cur_params.dot11MeshMaxRetries) || 4529 nla_put_u8(msg, NL80211_MESHCONF_TTL, 4530 cur_params.dot11MeshTTL) || 4531 nla_put_u8(msg, NL80211_MESHCONF_ELEMENT_TTL, 4532 cur_params.element_ttl) || 4533 nla_put_u8(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS, 4534 cur_params.auto_open_plinks) || 4535 nla_put_u32(msg, NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR, 4536 cur_params.dot11MeshNbrOffsetMaxNeighbor) || 4537 nla_put_u8(msg, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES, 4538 cur_params.dot11MeshHWMPmaxPREQretries) || 4539 nla_put_u32(msg, NL80211_MESHCONF_PATH_REFRESH_TIME, 4540 cur_params.path_refresh_time) || 4541 nla_put_u16(msg, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT, 4542 cur_params.min_discovery_timeout) || 4543 nla_put_u32(msg, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT, 4544 cur_params.dot11MeshHWMPactivePathTimeout) || 4545 nla_put_u16(msg, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL, 4546 cur_params.dot11MeshHWMPpreqMinInterval) || 4547 nla_put_u16(msg, NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL, 4548 cur_params.dot11MeshHWMPperrMinInterval) || 4549 nla_put_u16(msg, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME, 4550 cur_params.dot11MeshHWMPnetDiameterTraversalTime) || 4551 nla_put_u8(msg, NL80211_MESHCONF_HWMP_ROOTMODE, 4552 cur_params.dot11MeshHWMPRootMode) || 4553 nla_put_u16(msg, NL80211_MESHCONF_HWMP_RANN_INTERVAL, 4554 cur_params.dot11MeshHWMPRannInterval) || 4555 nla_put_u8(msg, NL80211_MESHCONF_GATE_ANNOUNCEMENTS, 4556 cur_params.dot11MeshGateAnnouncementProtocol) || 4557 nla_put_u8(msg, NL80211_MESHCONF_FORWARDING, 4558 cur_params.dot11MeshForwarding) || 4559 nla_put_u32(msg, NL80211_MESHCONF_RSSI_THRESHOLD, 4560 cur_params.rssi_threshold) || 4561 nla_put_u32(msg, NL80211_MESHCONF_HT_OPMODE, 4562 cur_params.ht_opmode) || 4563 nla_put_u32(msg, NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT, 4564 cur_params.dot11MeshHWMPactivePathToRootTimeout) || 4565 nla_put_u16(msg, NL80211_MESHCONF_HWMP_ROOT_INTERVAL, 4566 cur_params.dot11MeshHWMProotInterval) || 4567 nla_put_u16(msg, NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL, 4568 cur_params.dot11MeshHWMPconfirmationInterval) || 4569 nla_put_u32(msg, NL80211_MESHCONF_POWER_MODE, 4570 cur_params.power_mode) || 4571 nla_put_u16(msg, NL80211_MESHCONF_AWAKE_WINDOW, 4572 cur_params.dot11MeshAwakeWindowDuration)) 4573 goto nla_put_failure; 4574 nla_nest_end(msg, pinfoattr); 4575 genlmsg_end(msg, hdr); 4576 return genlmsg_reply(msg, info); 4577 4578 nla_put_failure: 4579 genlmsg_cancel(msg, hdr); 4580 out: 4581 nlmsg_free(msg); 4582 return -ENOBUFS; 4583 } 4584 4585 static const struct nla_policy nl80211_meshconf_params_policy[NL80211_MESHCONF_ATTR_MAX+1] = { 4586 [NL80211_MESHCONF_RETRY_TIMEOUT] = { .type = NLA_U16 }, 4587 [NL80211_MESHCONF_CONFIRM_TIMEOUT] = { .type = NLA_U16 }, 4588 [NL80211_MESHCONF_HOLDING_TIMEOUT] = { .type = NLA_U16 }, 4589 [NL80211_MESHCONF_MAX_PEER_LINKS] = { .type = NLA_U16 }, 4590 [NL80211_MESHCONF_MAX_RETRIES] = { .type = NLA_U8 }, 4591 [NL80211_MESHCONF_TTL] = { .type = NLA_U8 }, 4592 [NL80211_MESHCONF_ELEMENT_TTL] = { .type = NLA_U8 }, 4593 [NL80211_MESHCONF_AUTO_OPEN_PLINKS] = { .type = NLA_U8 }, 4594 [NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR] = { .type = NLA_U32 }, 4595 [NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES] = { .type = NLA_U8 }, 4596 [NL80211_MESHCONF_PATH_REFRESH_TIME] = { .type = NLA_U32 }, 4597 [NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT] = { .type = NLA_U16 }, 4598 [NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT] = { .type = NLA_U32 }, 4599 [NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL] = { .type = NLA_U16 }, 4600 [NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL] = { .type = NLA_U16 }, 4601 [NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME] = { .type = NLA_U16 }, 4602 [NL80211_MESHCONF_HWMP_ROOTMODE] = { .type = NLA_U8 }, 4603 [NL80211_MESHCONF_HWMP_RANN_INTERVAL] = { .type = NLA_U16 }, 4604 [NL80211_MESHCONF_GATE_ANNOUNCEMENTS] = { .type = NLA_U8 }, 4605 [NL80211_MESHCONF_FORWARDING] = { .type = NLA_U8 }, 4606 [NL80211_MESHCONF_RSSI_THRESHOLD] = { .type = NLA_U32 }, 4607 [NL80211_MESHCONF_HT_OPMODE] = { .type = NLA_U16 }, 4608 [NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT] = { .type = NLA_U32 }, 4609 [NL80211_MESHCONF_HWMP_ROOT_INTERVAL] = { .type = NLA_U16 }, 4610 [NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL] = { .type = NLA_U16 }, 4611 [NL80211_MESHCONF_POWER_MODE] = { .type = NLA_U32 }, 4612 [NL80211_MESHCONF_AWAKE_WINDOW] = { .type = NLA_U16 }, 4613 }; 4614 4615 static const struct nla_policy 4616 nl80211_mesh_setup_params_policy[NL80211_MESH_SETUP_ATTR_MAX+1] = { 4617 [NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC] = { .type = NLA_U8 }, 4618 [NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL] = { .type = NLA_U8 }, 4619 [NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC] = { .type = NLA_U8 }, 4620 [NL80211_MESH_SETUP_USERSPACE_AUTH] = { .type = NLA_FLAG }, 4621 [NL80211_MESH_SETUP_USERSPACE_MPM] = { .type = NLA_FLAG }, 4622 [NL80211_MESH_SETUP_IE] = { .type = NLA_BINARY, 4623 .len = IEEE80211_MAX_DATA_LEN }, 4624 [NL80211_MESH_SETUP_USERSPACE_AMPE] = { .type = NLA_FLAG }, 4625 }; 4626 4627 static int nl80211_parse_mesh_config(struct genl_info *info, 4628 struct mesh_config *cfg, 4629 u32 *mask_out) 4630 { 4631 struct nlattr *tb[NL80211_MESHCONF_ATTR_MAX + 1]; 4632 u32 mask = 0; 4633 4634 #define FILL_IN_MESH_PARAM_IF_SET(tb, cfg, param, min, max, mask, attr, fn) \ 4635 do { \ 4636 if (tb[attr]) { \ 4637 if (fn(tb[attr]) < min || fn(tb[attr]) > max) \ 4638 return -EINVAL; \ 4639 cfg->param = fn(tb[attr]); \ 4640 mask |= (1 << (attr - 1)); \ 4641 } \ 4642 } while (0) 4643 4644 4645 if (!info->attrs[NL80211_ATTR_MESH_CONFIG]) 4646 return -EINVAL; 4647 if (nla_parse_nested(tb, NL80211_MESHCONF_ATTR_MAX, 4648 info->attrs[NL80211_ATTR_MESH_CONFIG], 4649 nl80211_meshconf_params_policy)) 4650 return -EINVAL; 4651 4652 /* This makes sure that there aren't more than 32 mesh config 4653 * parameters (otherwise our bitfield scheme would not work.) */ 4654 BUILD_BUG_ON(NL80211_MESHCONF_ATTR_MAX > 32); 4655 4656 /* Fill in the params struct */ 4657 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshRetryTimeout, 1, 255, 4658 mask, NL80211_MESHCONF_RETRY_TIMEOUT, 4659 nla_get_u16); 4660 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConfirmTimeout, 1, 255, 4661 mask, NL80211_MESHCONF_CONFIRM_TIMEOUT, 4662 nla_get_u16); 4663 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHoldingTimeout, 1, 255, 4664 mask, NL80211_MESHCONF_HOLDING_TIMEOUT, 4665 nla_get_u16); 4666 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxPeerLinks, 0, 255, 4667 mask, NL80211_MESHCONF_MAX_PEER_LINKS, 4668 nla_get_u16); 4669 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxRetries, 0, 16, 4670 mask, NL80211_MESHCONF_MAX_RETRIES, 4671 nla_get_u8); 4672 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshTTL, 1, 255, 4673 mask, NL80211_MESHCONF_TTL, nla_get_u8); 4674 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, element_ttl, 1, 255, 4675 mask, NL80211_MESHCONF_ELEMENT_TTL, 4676 nla_get_u8); 4677 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, auto_open_plinks, 0, 1, 4678 mask, NL80211_MESHCONF_AUTO_OPEN_PLINKS, 4679 nla_get_u8); 4680 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshNbrOffsetMaxNeighbor, 4681 1, 255, mask, 4682 NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR, 4683 nla_get_u32); 4684 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPmaxPREQretries, 0, 255, 4685 mask, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES, 4686 nla_get_u8); 4687 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, path_refresh_time, 1, 65535, 4688 mask, NL80211_MESHCONF_PATH_REFRESH_TIME, 4689 nla_get_u32); 4690 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, min_discovery_timeout, 1, 65535, 4691 mask, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT, 4692 nla_get_u16); 4693 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathTimeout, 4694 1, 65535, mask, 4695 NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT, 4696 nla_get_u32); 4697 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPpreqMinInterval, 4698 1, 65535, mask, 4699 NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL, 4700 nla_get_u16); 4701 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPperrMinInterval, 4702 1, 65535, mask, 4703 NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL, 4704 nla_get_u16); 4705 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, 4706 dot11MeshHWMPnetDiameterTraversalTime, 4707 1, 65535, mask, 4708 NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME, 4709 nla_get_u16); 4710 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRootMode, 0, 4, 4711 mask, NL80211_MESHCONF_HWMP_ROOTMODE, 4712 nla_get_u8); 4713 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRannInterval, 1, 65535, 4714 mask, NL80211_MESHCONF_HWMP_RANN_INTERVAL, 4715 nla_get_u16); 4716 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, 4717 dot11MeshGateAnnouncementProtocol, 0, 1, 4718 mask, NL80211_MESHCONF_GATE_ANNOUNCEMENTS, 4719 nla_get_u8); 4720 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshForwarding, 0, 1, 4721 mask, NL80211_MESHCONF_FORWARDING, 4722 nla_get_u8); 4723 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, rssi_threshold, 1, 255, 4724 mask, NL80211_MESHCONF_RSSI_THRESHOLD, 4725 nla_get_u32); 4726 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, ht_opmode, 0, 16, 4727 mask, NL80211_MESHCONF_HT_OPMODE, 4728 nla_get_u16); 4729 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathToRootTimeout, 4730 1, 65535, mask, 4731 NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT, 4732 nla_get_u32); 4733 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMProotInterval, 1, 65535, 4734 mask, NL80211_MESHCONF_HWMP_ROOT_INTERVAL, 4735 nla_get_u16); 4736 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, 4737 dot11MeshHWMPconfirmationInterval, 4738 1, 65535, mask, 4739 NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL, 4740 nla_get_u16); 4741 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, power_mode, 4742 NL80211_MESH_POWER_ACTIVE, 4743 NL80211_MESH_POWER_MAX, 4744 mask, NL80211_MESHCONF_POWER_MODE, 4745 nla_get_u32); 4746 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshAwakeWindowDuration, 4747 0, 65535, mask, 4748 NL80211_MESHCONF_AWAKE_WINDOW, nla_get_u16); 4749 if (mask_out) 4750 *mask_out = mask; 4751 4752 return 0; 4753 4754 #undef FILL_IN_MESH_PARAM_IF_SET 4755 } 4756 4757 static int nl80211_parse_mesh_setup(struct genl_info *info, 4758 struct mesh_setup *setup) 4759 { 4760 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 4761 struct nlattr *tb[NL80211_MESH_SETUP_ATTR_MAX + 1]; 4762 4763 if (!info->attrs[NL80211_ATTR_MESH_SETUP]) 4764 return -EINVAL; 4765 if (nla_parse_nested(tb, NL80211_MESH_SETUP_ATTR_MAX, 4766 info->attrs[NL80211_ATTR_MESH_SETUP], 4767 nl80211_mesh_setup_params_policy)) 4768 return -EINVAL; 4769 4770 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC]) 4771 setup->sync_method = 4772 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])) ? 4773 IEEE80211_SYNC_METHOD_VENDOR : 4774 IEEE80211_SYNC_METHOD_NEIGHBOR_OFFSET; 4775 4776 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL]) 4777 setup->path_sel_proto = 4778 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])) ? 4779 IEEE80211_PATH_PROTOCOL_VENDOR : 4780 IEEE80211_PATH_PROTOCOL_HWMP; 4781 4782 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC]) 4783 setup->path_metric = 4784 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])) ? 4785 IEEE80211_PATH_METRIC_VENDOR : 4786 IEEE80211_PATH_METRIC_AIRTIME; 4787 4788 4789 if (tb[NL80211_MESH_SETUP_IE]) { 4790 struct nlattr *ieattr = 4791 tb[NL80211_MESH_SETUP_IE]; 4792 if (!is_valid_ie_attr(ieattr)) 4793 return -EINVAL; 4794 setup->ie = nla_data(ieattr); 4795 setup->ie_len = nla_len(ieattr); 4796 } 4797 if (tb[NL80211_MESH_SETUP_USERSPACE_MPM] && 4798 !(rdev->wiphy.features & NL80211_FEATURE_USERSPACE_MPM)) 4799 return -EINVAL; 4800 setup->user_mpm = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_MPM]); 4801 setup->is_authenticated = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AUTH]); 4802 setup->is_secure = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AMPE]); 4803 if (setup->is_secure) 4804 setup->user_mpm = true; 4805 4806 return 0; 4807 } 4808 4809 static int nl80211_update_mesh_config(struct sk_buff *skb, 4810 struct genl_info *info) 4811 { 4812 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 4813 struct net_device *dev = info->user_ptr[1]; 4814 struct wireless_dev *wdev = dev->ieee80211_ptr; 4815 struct mesh_config cfg; 4816 u32 mask; 4817 int err; 4818 4819 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) 4820 return -EOPNOTSUPP; 4821 4822 if (!rdev->ops->update_mesh_config) 4823 return -EOPNOTSUPP; 4824 4825 err = nl80211_parse_mesh_config(info, &cfg, &mask); 4826 if (err) 4827 return err; 4828 4829 wdev_lock(wdev); 4830 if (!wdev->mesh_id_len) 4831 err = -ENOLINK; 4832 4833 if (!err) 4834 err = rdev_update_mesh_config(rdev, dev, mask, &cfg); 4835 4836 wdev_unlock(wdev); 4837 4838 return err; 4839 } 4840 4841 static int nl80211_get_reg(struct sk_buff *skb, struct genl_info *info) 4842 { 4843 const struct ieee80211_regdomain *regdom; 4844 struct sk_buff *msg; 4845 void *hdr = NULL; 4846 struct nlattr *nl_reg_rules; 4847 unsigned int i; 4848 int err = -EINVAL; 4849 4850 mutex_lock(&cfg80211_mutex); 4851 4852 if (!cfg80211_regdomain) 4853 goto out; 4854 4855 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 4856 if (!msg) { 4857 err = -ENOBUFS; 4858 goto out; 4859 } 4860 4861 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0, 4862 NL80211_CMD_GET_REG); 4863 if (!hdr) 4864 goto put_failure; 4865 4866 if (reg_last_request_cell_base() && 4867 nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE, 4868 NL80211_USER_REG_HINT_CELL_BASE)) 4869 goto nla_put_failure; 4870 4871 rcu_read_lock(); 4872 regdom = rcu_dereference(cfg80211_regdomain); 4873 4874 if (nla_put_string(msg, NL80211_ATTR_REG_ALPHA2, regdom->alpha2) || 4875 (regdom->dfs_region && 4876 nla_put_u8(msg, NL80211_ATTR_DFS_REGION, regdom->dfs_region))) 4877 goto nla_put_failure_rcu; 4878 4879 nl_reg_rules = nla_nest_start(msg, NL80211_ATTR_REG_RULES); 4880 if (!nl_reg_rules) 4881 goto nla_put_failure_rcu; 4882 4883 for (i = 0; i < regdom->n_reg_rules; i++) { 4884 struct nlattr *nl_reg_rule; 4885 const struct ieee80211_reg_rule *reg_rule; 4886 const struct ieee80211_freq_range *freq_range; 4887 const struct ieee80211_power_rule *power_rule; 4888 4889 reg_rule = ®dom->reg_rules[i]; 4890 freq_range = ®_rule->freq_range; 4891 power_rule = ®_rule->power_rule; 4892 4893 nl_reg_rule = nla_nest_start(msg, i); 4894 if (!nl_reg_rule) 4895 goto nla_put_failure_rcu; 4896 4897 if (nla_put_u32(msg, NL80211_ATTR_REG_RULE_FLAGS, 4898 reg_rule->flags) || 4899 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_START, 4900 freq_range->start_freq_khz) || 4901 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_END, 4902 freq_range->end_freq_khz) || 4903 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_MAX_BW, 4904 freq_range->max_bandwidth_khz) || 4905 nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN, 4906 power_rule->max_antenna_gain) || 4907 nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_EIRP, 4908 power_rule->max_eirp)) 4909 goto nla_put_failure_rcu; 4910 4911 nla_nest_end(msg, nl_reg_rule); 4912 } 4913 rcu_read_unlock(); 4914 4915 nla_nest_end(msg, nl_reg_rules); 4916 4917 genlmsg_end(msg, hdr); 4918 err = genlmsg_reply(msg, info); 4919 goto out; 4920 4921 nla_put_failure_rcu: 4922 rcu_read_unlock(); 4923 nla_put_failure: 4924 genlmsg_cancel(msg, hdr); 4925 put_failure: 4926 nlmsg_free(msg); 4927 err = -EMSGSIZE; 4928 out: 4929 mutex_unlock(&cfg80211_mutex); 4930 return err; 4931 } 4932 4933 static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info) 4934 { 4935 struct nlattr *tb[NL80211_REG_RULE_ATTR_MAX + 1]; 4936 struct nlattr *nl_reg_rule; 4937 char *alpha2 = NULL; 4938 int rem_reg_rules = 0, r = 0; 4939 u32 num_rules = 0, rule_idx = 0, size_of_regd; 4940 u8 dfs_region = 0; 4941 struct ieee80211_regdomain *rd = NULL; 4942 4943 if (!info->attrs[NL80211_ATTR_REG_ALPHA2]) 4944 return -EINVAL; 4945 4946 if (!info->attrs[NL80211_ATTR_REG_RULES]) 4947 return -EINVAL; 4948 4949 alpha2 = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]); 4950 4951 if (info->attrs[NL80211_ATTR_DFS_REGION]) 4952 dfs_region = nla_get_u8(info->attrs[NL80211_ATTR_DFS_REGION]); 4953 4954 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES], 4955 rem_reg_rules) { 4956 num_rules++; 4957 if (num_rules > NL80211_MAX_SUPP_REG_RULES) 4958 return -EINVAL; 4959 } 4960 4961 size_of_regd = sizeof(struct ieee80211_regdomain) + 4962 num_rules * sizeof(struct ieee80211_reg_rule); 4963 4964 rd = kzalloc(size_of_regd, GFP_KERNEL); 4965 if (!rd) 4966 return -ENOMEM; 4967 4968 rd->n_reg_rules = num_rules; 4969 rd->alpha2[0] = alpha2[0]; 4970 rd->alpha2[1] = alpha2[1]; 4971 4972 /* 4973 * Disable DFS master mode if the DFS region was 4974 * not supported or known on this kernel. 4975 */ 4976 if (reg_supported_dfs_region(dfs_region)) 4977 rd->dfs_region = dfs_region; 4978 4979 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES], 4980 rem_reg_rules) { 4981 nla_parse(tb, NL80211_REG_RULE_ATTR_MAX, 4982 nla_data(nl_reg_rule), nla_len(nl_reg_rule), 4983 reg_rule_policy); 4984 r = parse_reg_rule(tb, &rd->reg_rules[rule_idx]); 4985 if (r) 4986 goto bad_reg; 4987 4988 rule_idx++; 4989 4990 if (rule_idx > NL80211_MAX_SUPP_REG_RULES) { 4991 r = -EINVAL; 4992 goto bad_reg; 4993 } 4994 } 4995 4996 mutex_lock(&cfg80211_mutex); 4997 4998 r = set_regdom(rd); 4999 /* set_regdom took ownership */ 5000 rd = NULL; 5001 mutex_unlock(&cfg80211_mutex); 5002 5003 bad_reg: 5004 kfree(rd); 5005 return r; 5006 } 5007 5008 static int validate_scan_freqs(struct nlattr *freqs) 5009 { 5010 struct nlattr *attr1, *attr2; 5011 int n_channels = 0, tmp1, tmp2; 5012 5013 nla_for_each_nested(attr1, freqs, tmp1) { 5014 n_channels++; 5015 /* 5016 * Some hardware has a limited channel list for 5017 * scanning, and it is pretty much nonsensical 5018 * to scan for a channel twice, so disallow that 5019 * and don't require drivers to check that the 5020 * channel list they get isn't longer than what 5021 * they can scan, as long as they can scan all 5022 * the channels they registered at once. 5023 */ 5024 nla_for_each_nested(attr2, freqs, tmp2) 5025 if (attr1 != attr2 && 5026 nla_get_u32(attr1) == nla_get_u32(attr2)) 5027 return 0; 5028 } 5029 5030 return n_channels; 5031 } 5032 5033 static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info) 5034 { 5035 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 5036 struct wireless_dev *wdev = info->user_ptr[1]; 5037 struct cfg80211_scan_request *request; 5038 struct nlattr *attr; 5039 struct wiphy *wiphy; 5040 int err, tmp, n_ssids = 0, n_channels, i; 5041 size_t ie_len; 5042 5043 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE])) 5044 return -EINVAL; 5045 5046 wiphy = &rdev->wiphy; 5047 5048 if (!rdev->ops->scan) 5049 return -EOPNOTSUPP; 5050 5051 if (rdev->scan_req) 5052 return -EBUSY; 5053 5054 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) { 5055 n_channels = validate_scan_freqs( 5056 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]); 5057 if (!n_channels) 5058 return -EINVAL; 5059 } else { 5060 enum ieee80211_band band; 5061 n_channels = 0; 5062 5063 for (band = 0; band < IEEE80211_NUM_BANDS; band++) 5064 if (wiphy->bands[band]) 5065 n_channels += wiphy->bands[band]->n_channels; 5066 } 5067 5068 if (info->attrs[NL80211_ATTR_SCAN_SSIDS]) 5069 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) 5070 n_ssids++; 5071 5072 if (n_ssids > wiphy->max_scan_ssids) 5073 return -EINVAL; 5074 5075 if (info->attrs[NL80211_ATTR_IE]) 5076 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); 5077 else 5078 ie_len = 0; 5079 5080 if (ie_len > wiphy->max_scan_ie_len) 5081 return -EINVAL; 5082 5083 request = kzalloc(sizeof(*request) 5084 + sizeof(*request->ssids) * n_ssids 5085 + sizeof(*request->channels) * n_channels 5086 + ie_len, GFP_KERNEL); 5087 if (!request) 5088 return -ENOMEM; 5089 5090 if (n_ssids) 5091 request->ssids = (void *)&request->channels[n_channels]; 5092 request->n_ssids = n_ssids; 5093 if (ie_len) { 5094 if (request->ssids) 5095 request->ie = (void *)(request->ssids + n_ssids); 5096 else 5097 request->ie = (void *)(request->channels + n_channels); 5098 } 5099 5100 i = 0; 5101 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) { 5102 /* user specified, bail out if channel not found */ 5103 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_FREQUENCIES], tmp) { 5104 struct ieee80211_channel *chan; 5105 5106 chan = ieee80211_get_channel(wiphy, nla_get_u32(attr)); 5107 5108 if (!chan) { 5109 err = -EINVAL; 5110 goto out_free; 5111 } 5112 5113 /* ignore disabled channels */ 5114 if (chan->flags & IEEE80211_CHAN_DISABLED) 5115 continue; 5116 5117 request->channels[i] = chan; 5118 i++; 5119 } 5120 } else { 5121 enum ieee80211_band band; 5122 5123 /* all channels */ 5124 for (band = 0; band < IEEE80211_NUM_BANDS; band++) { 5125 int j; 5126 if (!wiphy->bands[band]) 5127 continue; 5128 for (j = 0; j < wiphy->bands[band]->n_channels; j++) { 5129 struct ieee80211_channel *chan; 5130 5131 chan = &wiphy->bands[band]->channels[j]; 5132 5133 if (chan->flags & IEEE80211_CHAN_DISABLED) 5134 continue; 5135 5136 request->channels[i] = chan; 5137 i++; 5138 } 5139 } 5140 } 5141 5142 if (!i) { 5143 err = -EINVAL; 5144 goto out_free; 5145 } 5146 5147 request->n_channels = i; 5148 5149 i = 0; 5150 if (info->attrs[NL80211_ATTR_SCAN_SSIDS]) { 5151 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) { 5152 if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) { 5153 err = -EINVAL; 5154 goto out_free; 5155 } 5156 request->ssids[i].ssid_len = nla_len(attr); 5157 memcpy(request->ssids[i].ssid, nla_data(attr), nla_len(attr)); 5158 i++; 5159 } 5160 } 5161 5162 if (info->attrs[NL80211_ATTR_IE]) { 5163 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); 5164 memcpy((void *)request->ie, 5165 nla_data(info->attrs[NL80211_ATTR_IE]), 5166 request->ie_len); 5167 } 5168 5169 for (i = 0; i < IEEE80211_NUM_BANDS; i++) 5170 if (wiphy->bands[i]) 5171 request->rates[i] = 5172 (1 << wiphy->bands[i]->n_bitrates) - 1; 5173 5174 if (info->attrs[NL80211_ATTR_SCAN_SUPP_RATES]) { 5175 nla_for_each_nested(attr, 5176 info->attrs[NL80211_ATTR_SCAN_SUPP_RATES], 5177 tmp) { 5178 enum ieee80211_band band = nla_type(attr); 5179 5180 if (band < 0 || band >= IEEE80211_NUM_BANDS) { 5181 err = -EINVAL; 5182 goto out_free; 5183 } 5184 err = ieee80211_get_ratemask(wiphy->bands[band], 5185 nla_data(attr), 5186 nla_len(attr), 5187 &request->rates[band]); 5188 if (err) 5189 goto out_free; 5190 } 5191 } 5192 5193 if (info->attrs[NL80211_ATTR_SCAN_FLAGS]) { 5194 request->flags = nla_get_u32( 5195 info->attrs[NL80211_ATTR_SCAN_FLAGS]); 5196 if (((request->flags & NL80211_SCAN_FLAG_LOW_PRIORITY) && 5197 !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) || 5198 ((request->flags & NL80211_SCAN_FLAG_FLUSH) && 5199 !(wiphy->features & NL80211_FEATURE_SCAN_FLUSH))) { 5200 err = -EOPNOTSUPP; 5201 goto out_free; 5202 } 5203 } 5204 5205 request->no_cck = 5206 nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]); 5207 5208 request->wdev = wdev; 5209 request->wiphy = &rdev->wiphy; 5210 request->scan_start = jiffies; 5211 5212 rdev->scan_req = request; 5213 err = rdev_scan(rdev, request); 5214 5215 if (!err) { 5216 nl80211_send_scan_start(rdev, wdev); 5217 if (wdev->netdev) 5218 dev_hold(wdev->netdev); 5219 } else { 5220 out_free: 5221 rdev->scan_req = NULL; 5222 kfree(request); 5223 } 5224 5225 return err; 5226 } 5227 5228 static int nl80211_start_sched_scan(struct sk_buff *skb, 5229 struct genl_info *info) 5230 { 5231 struct cfg80211_sched_scan_request *request; 5232 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 5233 struct net_device *dev = info->user_ptr[1]; 5234 struct nlattr *attr; 5235 struct wiphy *wiphy; 5236 int err, tmp, n_ssids = 0, n_match_sets = 0, n_channels, i; 5237 u32 interval; 5238 enum ieee80211_band band; 5239 size_t ie_len; 5240 struct nlattr *tb[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1]; 5241 5242 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) || 5243 !rdev->ops->sched_scan_start) 5244 return -EOPNOTSUPP; 5245 5246 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE])) 5247 return -EINVAL; 5248 5249 if (!info->attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL]) 5250 return -EINVAL; 5251 5252 interval = nla_get_u32(info->attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL]); 5253 if (interval == 0) 5254 return -EINVAL; 5255 5256 wiphy = &rdev->wiphy; 5257 5258 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) { 5259 n_channels = validate_scan_freqs( 5260 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]); 5261 if (!n_channels) 5262 return -EINVAL; 5263 } else { 5264 n_channels = 0; 5265 5266 for (band = 0; band < IEEE80211_NUM_BANDS; band++) 5267 if (wiphy->bands[band]) 5268 n_channels += wiphy->bands[band]->n_channels; 5269 } 5270 5271 if (info->attrs[NL80211_ATTR_SCAN_SSIDS]) 5272 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], 5273 tmp) 5274 n_ssids++; 5275 5276 if (n_ssids > wiphy->max_sched_scan_ssids) 5277 return -EINVAL; 5278 5279 if (info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) 5280 nla_for_each_nested(attr, 5281 info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH], 5282 tmp) 5283 n_match_sets++; 5284 5285 if (n_match_sets > wiphy->max_match_sets) 5286 return -EINVAL; 5287 5288 if (info->attrs[NL80211_ATTR_IE]) 5289 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); 5290 else 5291 ie_len = 0; 5292 5293 if (ie_len > wiphy->max_sched_scan_ie_len) 5294 return -EINVAL; 5295 5296 mutex_lock(&rdev->sched_scan_mtx); 5297 5298 if (rdev->sched_scan_req) { 5299 err = -EINPROGRESS; 5300 goto out; 5301 } 5302 5303 request = kzalloc(sizeof(*request) 5304 + sizeof(*request->ssids) * n_ssids 5305 + sizeof(*request->match_sets) * n_match_sets 5306 + sizeof(*request->channels) * n_channels 5307 + ie_len, GFP_KERNEL); 5308 if (!request) { 5309 err = -ENOMEM; 5310 goto out; 5311 } 5312 5313 if (n_ssids) 5314 request->ssids = (void *)&request->channels[n_channels]; 5315 request->n_ssids = n_ssids; 5316 if (ie_len) { 5317 if (request->ssids) 5318 request->ie = (void *)(request->ssids + n_ssids); 5319 else 5320 request->ie = (void *)(request->channels + n_channels); 5321 } 5322 5323 if (n_match_sets) { 5324 if (request->ie) 5325 request->match_sets = (void *)(request->ie + ie_len); 5326 else if (request->ssids) 5327 request->match_sets = 5328 (void *)(request->ssids + n_ssids); 5329 else 5330 request->match_sets = 5331 (void *)(request->channels + n_channels); 5332 } 5333 request->n_match_sets = n_match_sets; 5334 5335 i = 0; 5336 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) { 5337 /* user specified, bail out if channel not found */ 5338 nla_for_each_nested(attr, 5339 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES], 5340 tmp) { 5341 struct ieee80211_channel *chan; 5342 5343 chan = ieee80211_get_channel(wiphy, nla_get_u32(attr)); 5344 5345 if (!chan) { 5346 err = -EINVAL; 5347 goto out_free; 5348 } 5349 5350 /* ignore disabled channels */ 5351 if (chan->flags & IEEE80211_CHAN_DISABLED) 5352 continue; 5353 5354 request->channels[i] = chan; 5355 i++; 5356 } 5357 } else { 5358 /* all channels */ 5359 for (band = 0; band < IEEE80211_NUM_BANDS; band++) { 5360 int j; 5361 if (!wiphy->bands[band]) 5362 continue; 5363 for (j = 0; j < wiphy->bands[band]->n_channels; j++) { 5364 struct ieee80211_channel *chan; 5365 5366 chan = &wiphy->bands[band]->channels[j]; 5367 5368 if (chan->flags & IEEE80211_CHAN_DISABLED) 5369 continue; 5370 5371 request->channels[i] = chan; 5372 i++; 5373 } 5374 } 5375 } 5376 5377 if (!i) { 5378 err = -EINVAL; 5379 goto out_free; 5380 } 5381 5382 request->n_channels = i; 5383 5384 i = 0; 5385 if (info->attrs[NL80211_ATTR_SCAN_SSIDS]) { 5386 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], 5387 tmp) { 5388 if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) { 5389 err = -EINVAL; 5390 goto out_free; 5391 } 5392 request->ssids[i].ssid_len = nla_len(attr); 5393 memcpy(request->ssids[i].ssid, nla_data(attr), 5394 nla_len(attr)); 5395 i++; 5396 } 5397 } 5398 5399 i = 0; 5400 if (info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) { 5401 nla_for_each_nested(attr, 5402 info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH], 5403 tmp) { 5404 struct nlattr *ssid, *rssi; 5405 5406 nla_parse(tb, NL80211_SCHED_SCAN_MATCH_ATTR_MAX, 5407 nla_data(attr), nla_len(attr), 5408 nl80211_match_policy); 5409 ssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID]; 5410 if (ssid) { 5411 if (nla_len(ssid) > IEEE80211_MAX_SSID_LEN) { 5412 err = -EINVAL; 5413 goto out_free; 5414 } 5415 memcpy(request->match_sets[i].ssid.ssid, 5416 nla_data(ssid), nla_len(ssid)); 5417 request->match_sets[i].ssid.ssid_len = 5418 nla_len(ssid); 5419 } 5420 rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI]; 5421 if (rssi) 5422 request->rssi_thold = nla_get_u32(rssi); 5423 else 5424 request->rssi_thold = 5425 NL80211_SCAN_RSSI_THOLD_OFF; 5426 i++; 5427 } 5428 } 5429 5430 if (info->attrs[NL80211_ATTR_IE]) { 5431 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); 5432 memcpy((void *)request->ie, 5433 nla_data(info->attrs[NL80211_ATTR_IE]), 5434 request->ie_len); 5435 } 5436 5437 if (info->attrs[NL80211_ATTR_SCAN_FLAGS]) { 5438 request->flags = nla_get_u32( 5439 info->attrs[NL80211_ATTR_SCAN_FLAGS]); 5440 if (((request->flags & NL80211_SCAN_FLAG_LOW_PRIORITY) && 5441 !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) || 5442 ((request->flags & NL80211_SCAN_FLAG_FLUSH) && 5443 !(wiphy->features & NL80211_FEATURE_SCAN_FLUSH))) { 5444 err = -EOPNOTSUPP; 5445 goto out_free; 5446 } 5447 } 5448 5449 request->dev = dev; 5450 request->wiphy = &rdev->wiphy; 5451 request->interval = interval; 5452 request->scan_start = jiffies; 5453 5454 err = rdev_sched_scan_start(rdev, dev, request); 5455 if (!err) { 5456 rdev->sched_scan_req = request; 5457 nl80211_send_sched_scan(rdev, dev, 5458 NL80211_CMD_START_SCHED_SCAN); 5459 goto out; 5460 } 5461 5462 out_free: 5463 kfree(request); 5464 out: 5465 mutex_unlock(&rdev->sched_scan_mtx); 5466 return err; 5467 } 5468 5469 static int nl80211_stop_sched_scan(struct sk_buff *skb, 5470 struct genl_info *info) 5471 { 5472 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 5473 int err; 5474 5475 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) || 5476 !rdev->ops->sched_scan_stop) 5477 return -EOPNOTSUPP; 5478 5479 mutex_lock(&rdev->sched_scan_mtx); 5480 err = __cfg80211_stop_sched_scan(rdev, false); 5481 mutex_unlock(&rdev->sched_scan_mtx); 5482 5483 return err; 5484 } 5485 5486 static int nl80211_start_radar_detection(struct sk_buff *skb, 5487 struct genl_info *info) 5488 { 5489 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 5490 struct net_device *dev = info->user_ptr[1]; 5491 struct wireless_dev *wdev = dev->ieee80211_ptr; 5492 struct cfg80211_chan_def chandef; 5493 int err; 5494 5495 err = nl80211_parse_chandef(rdev, info, &chandef); 5496 if (err) 5497 return err; 5498 5499 if (wdev->cac_started) 5500 return -EBUSY; 5501 5502 err = cfg80211_chandef_dfs_required(wdev->wiphy, &chandef); 5503 if (err < 0) 5504 return err; 5505 5506 if (err == 0) 5507 return -EINVAL; 5508 5509 if (chandef.chan->dfs_state != NL80211_DFS_USABLE) 5510 return -EINVAL; 5511 5512 if (!rdev->ops->start_radar_detection) 5513 return -EOPNOTSUPP; 5514 5515 mutex_lock(&rdev->devlist_mtx); 5516 err = cfg80211_can_use_iftype_chan(rdev, wdev, wdev->iftype, 5517 chandef.chan, CHAN_MODE_SHARED, 5518 BIT(chandef.width)); 5519 if (err) 5520 goto err_locked; 5521 5522 err = rdev->ops->start_radar_detection(&rdev->wiphy, dev, &chandef); 5523 if (!err) { 5524 wdev->channel = chandef.chan; 5525 wdev->cac_started = true; 5526 wdev->cac_start_time = jiffies; 5527 } 5528 err_locked: 5529 mutex_unlock(&rdev->devlist_mtx); 5530 5531 return err; 5532 } 5533 5534 static int nl80211_send_bss(struct sk_buff *msg, struct netlink_callback *cb, 5535 u32 seq, int flags, 5536 struct cfg80211_registered_device *rdev, 5537 struct wireless_dev *wdev, 5538 struct cfg80211_internal_bss *intbss) 5539 { 5540 struct cfg80211_bss *res = &intbss->pub; 5541 const struct cfg80211_bss_ies *ies; 5542 void *hdr; 5543 struct nlattr *bss; 5544 bool tsf = false; 5545 5546 ASSERT_WDEV_LOCK(wdev); 5547 5548 hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags, 5549 NL80211_CMD_NEW_SCAN_RESULTS); 5550 if (!hdr) 5551 return -1; 5552 5553 genl_dump_check_consistent(cb, hdr, &nl80211_fam); 5554 5555 if (nla_put_u32(msg, NL80211_ATTR_GENERATION, rdev->bss_generation) || 5556 nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex)) 5557 goto nla_put_failure; 5558 5559 bss = nla_nest_start(msg, NL80211_ATTR_BSS); 5560 if (!bss) 5561 goto nla_put_failure; 5562 if ((!is_zero_ether_addr(res->bssid) && 5563 nla_put(msg, NL80211_BSS_BSSID, ETH_ALEN, res->bssid))) 5564 goto nla_put_failure; 5565 5566 rcu_read_lock(); 5567 ies = rcu_dereference(res->ies); 5568 if (ies) { 5569 if (nla_put_u64(msg, NL80211_BSS_TSF, ies->tsf)) 5570 goto fail_unlock_rcu; 5571 tsf = true; 5572 if (ies->len && nla_put(msg, NL80211_BSS_INFORMATION_ELEMENTS, 5573 ies->len, ies->data)) 5574 goto fail_unlock_rcu; 5575 } 5576 ies = rcu_dereference(res->beacon_ies); 5577 if (ies) { 5578 if (!tsf && nla_put_u64(msg, NL80211_BSS_TSF, ies->tsf)) 5579 goto fail_unlock_rcu; 5580 if (ies->len && nla_put(msg, NL80211_BSS_BEACON_IES, 5581 ies->len, ies->data)) 5582 goto fail_unlock_rcu; 5583 } 5584 rcu_read_unlock(); 5585 5586 if (res->beacon_interval && 5587 nla_put_u16(msg, NL80211_BSS_BEACON_INTERVAL, res->beacon_interval)) 5588 goto nla_put_failure; 5589 if (nla_put_u16(msg, NL80211_BSS_CAPABILITY, res->capability) || 5590 nla_put_u32(msg, NL80211_BSS_FREQUENCY, res->channel->center_freq) || 5591 nla_put_u32(msg, NL80211_BSS_SEEN_MS_AGO, 5592 jiffies_to_msecs(jiffies - intbss->ts))) 5593 goto nla_put_failure; 5594 5595 switch (rdev->wiphy.signal_type) { 5596 case CFG80211_SIGNAL_TYPE_MBM: 5597 if (nla_put_u32(msg, NL80211_BSS_SIGNAL_MBM, res->signal)) 5598 goto nla_put_failure; 5599 break; 5600 case CFG80211_SIGNAL_TYPE_UNSPEC: 5601 if (nla_put_u8(msg, NL80211_BSS_SIGNAL_UNSPEC, res->signal)) 5602 goto nla_put_failure; 5603 break; 5604 default: 5605 break; 5606 } 5607 5608 switch (wdev->iftype) { 5609 case NL80211_IFTYPE_P2P_CLIENT: 5610 case NL80211_IFTYPE_STATION: 5611 if (intbss == wdev->current_bss && 5612 nla_put_u32(msg, NL80211_BSS_STATUS, 5613 NL80211_BSS_STATUS_ASSOCIATED)) 5614 goto nla_put_failure; 5615 break; 5616 case NL80211_IFTYPE_ADHOC: 5617 if (intbss == wdev->current_bss && 5618 nla_put_u32(msg, NL80211_BSS_STATUS, 5619 NL80211_BSS_STATUS_IBSS_JOINED)) 5620 goto nla_put_failure; 5621 break; 5622 default: 5623 break; 5624 } 5625 5626 nla_nest_end(msg, bss); 5627 5628 return genlmsg_end(msg, hdr); 5629 5630 fail_unlock_rcu: 5631 rcu_read_unlock(); 5632 nla_put_failure: 5633 genlmsg_cancel(msg, hdr); 5634 return -EMSGSIZE; 5635 } 5636 5637 static int nl80211_dump_scan(struct sk_buff *skb, 5638 struct netlink_callback *cb) 5639 { 5640 struct cfg80211_registered_device *rdev; 5641 struct net_device *dev; 5642 struct cfg80211_internal_bss *scan; 5643 struct wireless_dev *wdev; 5644 int start = cb->args[1], idx = 0; 5645 int err; 5646 5647 err = nl80211_prepare_netdev_dump(skb, cb, &rdev, &dev); 5648 if (err) 5649 return err; 5650 5651 wdev = dev->ieee80211_ptr; 5652 5653 wdev_lock(wdev); 5654 spin_lock_bh(&rdev->bss_lock); 5655 cfg80211_bss_expire(rdev); 5656 5657 cb->seq = rdev->bss_generation; 5658 5659 list_for_each_entry(scan, &rdev->bss_list, list) { 5660 if (++idx <= start) 5661 continue; 5662 if (nl80211_send_bss(skb, cb, 5663 cb->nlh->nlmsg_seq, NLM_F_MULTI, 5664 rdev, wdev, scan) < 0) { 5665 idx--; 5666 break; 5667 } 5668 } 5669 5670 spin_unlock_bh(&rdev->bss_lock); 5671 wdev_unlock(wdev); 5672 5673 cb->args[1] = idx; 5674 nl80211_finish_netdev_dump(rdev); 5675 5676 return skb->len; 5677 } 5678 5679 static int nl80211_send_survey(struct sk_buff *msg, u32 portid, u32 seq, 5680 int flags, struct net_device *dev, 5681 struct survey_info *survey) 5682 { 5683 void *hdr; 5684 struct nlattr *infoattr; 5685 5686 hdr = nl80211hdr_put(msg, portid, seq, flags, 5687 NL80211_CMD_NEW_SURVEY_RESULTS); 5688 if (!hdr) 5689 return -ENOMEM; 5690 5691 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex)) 5692 goto nla_put_failure; 5693 5694 infoattr = nla_nest_start(msg, NL80211_ATTR_SURVEY_INFO); 5695 if (!infoattr) 5696 goto nla_put_failure; 5697 5698 if (nla_put_u32(msg, NL80211_SURVEY_INFO_FREQUENCY, 5699 survey->channel->center_freq)) 5700 goto nla_put_failure; 5701 5702 if ((survey->filled & SURVEY_INFO_NOISE_DBM) && 5703 nla_put_u8(msg, NL80211_SURVEY_INFO_NOISE, survey->noise)) 5704 goto nla_put_failure; 5705 if ((survey->filled & SURVEY_INFO_IN_USE) && 5706 nla_put_flag(msg, NL80211_SURVEY_INFO_IN_USE)) 5707 goto nla_put_failure; 5708 if ((survey->filled & SURVEY_INFO_CHANNEL_TIME) && 5709 nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME, 5710 survey->channel_time)) 5711 goto nla_put_failure; 5712 if ((survey->filled & SURVEY_INFO_CHANNEL_TIME_BUSY) && 5713 nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_BUSY, 5714 survey->channel_time_busy)) 5715 goto nla_put_failure; 5716 if ((survey->filled & SURVEY_INFO_CHANNEL_TIME_EXT_BUSY) && 5717 nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_EXT_BUSY, 5718 survey->channel_time_ext_busy)) 5719 goto nla_put_failure; 5720 if ((survey->filled & SURVEY_INFO_CHANNEL_TIME_RX) && 5721 nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_RX, 5722 survey->channel_time_rx)) 5723 goto nla_put_failure; 5724 if ((survey->filled & SURVEY_INFO_CHANNEL_TIME_TX) && 5725 nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_TX, 5726 survey->channel_time_tx)) 5727 goto nla_put_failure; 5728 5729 nla_nest_end(msg, infoattr); 5730 5731 return genlmsg_end(msg, hdr); 5732 5733 nla_put_failure: 5734 genlmsg_cancel(msg, hdr); 5735 return -EMSGSIZE; 5736 } 5737 5738 static int nl80211_dump_survey(struct sk_buff *skb, 5739 struct netlink_callback *cb) 5740 { 5741 struct survey_info survey; 5742 struct cfg80211_registered_device *dev; 5743 struct net_device *netdev; 5744 int survey_idx = cb->args[1]; 5745 int res; 5746 5747 res = nl80211_prepare_netdev_dump(skb, cb, &dev, &netdev); 5748 if (res) 5749 return res; 5750 5751 if (!dev->ops->dump_survey) { 5752 res = -EOPNOTSUPP; 5753 goto out_err; 5754 } 5755 5756 while (1) { 5757 struct ieee80211_channel *chan; 5758 5759 res = rdev_dump_survey(dev, netdev, survey_idx, &survey); 5760 if (res == -ENOENT) 5761 break; 5762 if (res) 5763 goto out_err; 5764 5765 /* Survey without a channel doesn't make sense */ 5766 if (!survey.channel) { 5767 res = -EINVAL; 5768 goto out; 5769 } 5770 5771 chan = ieee80211_get_channel(&dev->wiphy, 5772 survey.channel->center_freq); 5773 if (!chan || chan->flags & IEEE80211_CHAN_DISABLED) { 5774 survey_idx++; 5775 continue; 5776 } 5777 5778 if (nl80211_send_survey(skb, 5779 NETLINK_CB(cb->skb).portid, 5780 cb->nlh->nlmsg_seq, NLM_F_MULTI, 5781 netdev, 5782 &survey) < 0) 5783 goto out; 5784 survey_idx++; 5785 } 5786 5787 out: 5788 cb->args[1] = survey_idx; 5789 res = skb->len; 5790 out_err: 5791 nl80211_finish_netdev_dump(dev); 5792 return res; 5793 } 5794 5795 static bool nl80211_valid_wpa_versions(u32 wpa_versions) 5796 { 5797 return !(wpa_versions & ~(NL80211_WPA_VERSION_1 | 5798 NL80211_WPA_VERSION_2)); 5799 } 5800 5801 static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info) 5802 { 5803 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 5804 struct net_device *dev = info->user_ptr[1]; 5805 struct ieee80211_channel *chan; 5806 const u8 *bssid, *ssid, *ie = NULL, *sae_data = NULL; 5807 int err, ssid_len, ie_len = 0, sae_data_len = 0; 5808 enum nl80211_auth_type auth_type; 5809 struct key_parse key; 5810 bool local_state_change; 5811 5812 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE])) 5813 return -EINVAL; 5814 5815 if (!info->attrs[NL80211_ATTR_MAC]) 5816 return -EINVAL; 5817 5818 if (!info->attrs[NL80211_ATTR_AUTH_TYPE]) 5819 return -EINVAL; 5820 5821 if (!info->attrs[NL80211_ATTR_SSID]) 5822 return -EINVAL; 5823 5824 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ]) 5825 return -EINVAL; 5826 5827 err = nl80211_parse_key(info, &key); 5828 if (err) 5829 return err; 5830 5831 if (key.idx >= 0) { 5832 if (key.type != -1 && key.type != NL80211_KEYTYPE_GROUP) 5833 return -EINVAL; 5834 if (!key.p.key || !key.p.key_len) 5835 return -EINVAL; 5836 if ((key.p.cipher != WLAN_CIPHER_SUITE_WEP40 || 5837 key.p.key_len != WLAN_KEY_LEN_WEP40) && 5838 (key.p.cipher != WLAN_CIPHER_SUITE_WEP104 || 5839 key.p.key_len != WLAN_KEY_LEN_WEP104)) 5840 return -EINVAL; 5841 if (key.idx > 4) 5842 return -EINVAL; 5843 } else { 5844 key.p.key_len = 0; 5845 key.p.key = NULL; 5846 } 5847 5848 if (key.idx >= 0) { 5849 int i; 5850 bool ok = false; 5851 for (i = 0; i < rdev->wiphy.n_cipher_suites; i++) { 5852 if (key.p.cipher == rdev->wiphy.cipher_suites[i]) { 5853 ok = true; 5854 break; 5855 } 5856 } 5857 if (!ok) 5858 return -EINVAL; 5859 } 5860 5861 if (!rdev->ops->auth) 5862 return -EOPNOTSUPP; 5863 5864 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION && 5865 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) 5866 return -EOPNOTSUPP; 5867 5868 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]); 5869 chan = ieee80211_get_channel(&rdev->wiphy, 5870 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ])); 5871 if (!chan || (chan->flags & IEEE80211_CHAN_DISABLED)) 5872 return -EINVAL; 5873 5874 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]); 5875 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]); 5876 5877 if (info->attrs[NL80211_ATTR_IE]) { 5878 ie = nla_data(info->attrs[NL80211_ATTR_IE]); 5879 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); 5880 } 5881 5882 auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]); 5883 if (!nl80211_valid_auth_type(rdev, auth_type, NL80211_CMD_AUTHENTICATE)) 5884 return -EINVAL; 5885 5886 if (auth_type == NL80211_AUTHTYPE_SAE && 5887 !info->attrs[NL80211_ATTR_SAE_DATA]) 5888 return -EINVAL; 5889 5890 if (info->attrs[NL80211_ATTR_SAE_DATA]) { 5891 if (auth_type != NL80211_AUTHTYPE_SAE) 5892 return -EINVAL; 5893 sae_data = nla_data(info->attrs[NL80211_ATTR_SAE_DATA]); 5894 sae_data_len = nla_len(info->attrs[NL80211_ATTR_SAE_DATA]); 5895 /* need to include at least Auth Transaction and Status Code */ 5896 if (sae_data_len < 4) 5897 return -EINVAL; 5898 } 5899 5900 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE]; 5901 5902 /* 5903 * Since we no longer track auth state, ignore 5904 * requests to only change local state. 5905 */ 5906 if (local_state_change) 5907 return 0; 5908 5909 return cfg80211_mlme_auth(rdev, dev, chan, auth_type, bssid, 5910 ssid, ssid_len, ie, ie_len, 5911 key.p.key, key.p.key_len, key.idx, 5912 sae_data, sae_data_len); 5913 } 5914 5915 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev, 5916 struct genl_info *info, 5917 struct cfg80211_crypto_settings *settings, 5918 int cipher_limit) 5919 { 5920 memset(settings, 0, sizeof(*settings)); 5921 5922 settings->control_port = info->attrs[NL80211_ATTR_CONTROL_PORT]; 5923 5924 if (info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) { 5925 u16 proto; 5926 proto = nla_get_u16( 5927 info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]); 5928 settings->control_port_ethertype = cpu_to_be16(proto); 5929 if (!(rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) && 5930 proto != ETH_P_PAE) 5931 return -EINVAL; 5932 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT]) 5933 settings->control_port_no_encrypt = true; 5934 } else 5935 settings->control_port_ethertype = cpu_to_be16(ETH_P_PAE); 5936 5937 if (info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]) { 5938 void *data; 5939 int len, i; 5940 5941 data = nla_data(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]); 5942 len = nla_len(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]); 5943 settings->n_ciphers_pairwise = len / sizeof(u32); 5944 5945 if (len % sizeof(u32)) 5946 return -EINVAL; 5947 5948 if (settings->n_ciphers_pairwise > cipher_limit) 5949 return -EINVAL; 5950 5951 memcpy(settings->ciphers_pairwise, data, len); 5952 5953 for (i = 0; i < settings->n_ciphers_pairwise; i++) 5954 if (!cfg80211_supported_cipher_suite( 5955 &rdev->wiphy, 5956 settings->ciphers_pairwise[i])) 5957 return -EINVAL; 5958 } 5959 5960 if (info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]) { 5961 settings->cipher_group = 5962 nla_get_u32(info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]); 5963 if (!cfg80211_supported_cipher_suite(&rdev->wiphy, 5964 settings->cipher_group)) 5965 return -EINVAL; 5966 } 5967 5968 if (info->attrs[NL80211_ATTR_WPA_VERSIONS]) { 5969 settings->wpa_versions = 5970 nla_get_u32(info->attrs[NL80211_ATTR_WPA_VERSIONS]); 5971 if (!nl80211_valid_wpa_versions(settings->wpa_versions)) 5972 return -EINVAL; 5973 } 5974 5975 if (info->attrs[NL80211_ATTR_AKM_SUITES]) { 5976 void *data; 5977 int len; 5978 5979 data = nla_data(info->attrs[NL80211_ATTR_AKM_SUITES]); 5980 len = nla_len(info->attrs[NL80211_ATTR_AKM_SUITES]); 5981 settings->n_akm_suites = len / sizeof(u32); 5982 5983 if (len % sizeof(u32)) 5984 return -EINVAL; 5985 5986 if (settings->n_akm_suites > NL80211_MAX_NR_AKM_SUITES) 5987 return -EINVAL; 5988 5989 memcpy(settings->akm_suites, data, len); 5990 } 5991 5992 return 0; 5993 } 5994 5995 static int nl80211_associate(struct sk_buff *skb, struct genl_info *info) 5996 { 5997 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 5998 struct net_device *dev = info->user_ptr[1]; 5999 struct ieee80211_channel *chan; 6000 struct cfg80211_assoc_request req = {}; 6001 const u8 *bssid, *ssid; 6002 int err, ssid_len = 0; 6003 6004 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE])) 6005 return -EINVAL; 6006 6007 if (!info->attrs[NL80211_ATTR_MAC] || 6008 !info->attrs[NL80211_ATTR_SSID] || 6009 !info->attrs[NL80211_ATTR_WIPHY_FREQ]) 6010 return -EINVAL; 6011 6012 if (!rdev->ops->assoc) 6013 return -EOPNOTSUPP; 6014 6015 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION && 6016 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) 6017 return -EOPNOTSUPP; 6018 6019 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]); 6020 6021 chan = ieee80211_get_channel(&rdev->wiphy, 6022 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ])); 6023 if (!chan || (chan->flags & IEEE80211_CHAN_DISABLED)) 6024 return -EINVAL; 6025 6026 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]); 6027 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]); 6028 6029 if (info->attrs[NL80211_ATTR_IE]) { 6030 req.ie = nla_data(info->attrs[NL80211_ATTR_IE]); 6031 req.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); 6032 } 6033 6034 if (info->attrs[NL80211_ATTR_USE_MFP]) { 6035 enum nl80211_mfp mfp = 6036 nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]); 6037 if (mfp == NL80211_MFP_REQUIRED) 6038 req.use_mfp = true; 6039 else if (mfp != NL80211_MFP_NO) 6040 return -EINVAL; 6041 } 6042 6043 if (info->attrs[NL80211_ATTR_PREV_BSSID]) 6044 req.prev_bssid = nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]); 6045 6046 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT])) 6047 req.flags |= ASSOC_REQ_DISABLE_HT; 6048 6049 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) 6050 memcpy(&req.ht_capa_mask, 6051 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]), 6052 sizeof(req.ht_capa_mask)); 6053 6054 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) { 6055 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) 6056 return -EINVAL; 6057 memcpy(&req.ht_capa, 6058 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]), 6059 sizeof(req.ht_capa)); 6060 } 6061 6062 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT])) 6063 req.flags |= ASSOC_REQ_DISABLE_VHT; 6064 6065 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]) 6066 memcpy(&req.vht_capa_mask, 6067 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]), 6068 sizeof(req.vht_capa_mask)); 6069 6070 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) { 6071 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]) 6072 return -EINVAL; 6073 memcpy(&req.vht_capa, 6074 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]), 6075 sizeof(req.vht_capa)); 6076 } 6077 6078 err = nl80211_crypto_settings(rdev, info, &req.crypto, 1); 6079 if (!err) 6080 err = cfg80211_mlme_assoc(rdev, dev, chan, bssid, 6081 ssid, ssid_len, &req); 6082 6083 return err; 6084 } 6085 6086 static int nl80211_deauthenticate(struct sk_buff *skb, struct genl_info *info) 6087 { 6088 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 6089 struct net_device *dev = info->user_ptr[1]; 6090 const u8 *ie = NULL, *bssid; 6091 int ie_len = 0; 6092 u16 reason_code; 6093 bool local_state_change; 6094 6095 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE])) 6096 return -EINVAL; 6097 6098 if (!info->attrs[NL80211_ATTR_MAC]) 6099 return -EINVAL; 6100 6101 if (!info->attrs[NL80211_ATTR_REASON_CODE]) 6102 return -EINVAL; 6103 6104 if (!rdev->ops->deauth) 6105 return -EOPNOTSUPP; 6106 6107 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION && 6108 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) 6109 return -EOPNOTSUPP; 6110 6111 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]); 6112 6113 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]); 6114 if (reason_code == 0) { 6115 /* Reason Code 0 is reserved */ 6116 return -EINVAL; 6117 } 6118 6119 if (info->attrs[NL80211_ATTR_IE]) { 6120 ie = nla_data(info->attrs[NL80211_ATTR_IE]); 6121 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); 6122 } 6123 6124 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE]; 6125 6126 return cfg80211_mlme_deauth(rdev, dev, bssid, ie, ie_len, reason_code, 6127 local_state_change); 6128 } 6129 6130 static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info) 6131 { 6132 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 6133 struct net_device *dev = info->user_ptr[1]; 6134 const u8 *ie = NULL, *bssid; 6135 int ie_len = 0; 6136 u16 reason_code; 6137 bool local_state_change; 6138 6139 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE])) 6140 return -EINVAL; 6141 6142 if (!info->attrs[NL80211_ATTR_MAC]) 6143 return -EINVAL; 6144 6145 if (!info->attrs[NL80211_ATTR_REASON_CODE]) 6146 return -EINVAL; 6147 6148 if (!rdev->ops->disassoc) 6149 return -EOPNOTSUPP; 6150 6151 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION && 6152 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) 6153 return -EOPNOTSUPP; 6154 6155 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]); 6156 6157 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]); 6158 if (reason_code == 0) { 6159 /* Reason Code 0 is reserved */ 6160 return -EINVAL; 6161 } 6162 6163 if (info->attrs[NL80211_ATTR_IE]) { 6164 ie = nla_data(info->attrs[NL80211_ATTR_IE]); 6165 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); 6166 } 6167 6168 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE]; 6169 6170 return cfg80211_mlme_disassoc(rdev, dev, bssid, ie, ie_len, reason_code, 6171 local_state_change); 6172 } 6173 6174 static bool 6175 nl80211_parse_mcast_rate(struct cfg80211_registered_device *rdev, 6176 int mcast_rate[IEEE80211_NUM_BANDS], 6177 int rateval) 6178 { 6179 struct wiphy *wiphy = &rdev->wiphy; 6180 bool found = false; 6181 int band, i; 6182 6183 for (band = 0; band < IEEE80211_NUM_BANDS; band++) { 6184 struct ieee80211_supported_band *sband; 6185 6186 sband = wiphy->bands[band]; 6187 if (!sband) 6188 continue; 6189 6190 for (i = 0; i < sband->n_bitrates; i++) { 6191 if (sband->bitrates[i].bitrate == rateval) { 6192 mcast_rate[band] = i + 1; 6193 found = true; 6194 break; 6195 } 6196 } 6197 } 6198 6199 return found; 6200 } 6201 6202 static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info) 6203 { 6204 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 6205 struct net_device *dev = info->user_ptr[1]; 6206 struct cfg80211_ibss_params ibss; 6207 struct wiphy *wiphy; 6208 struct cfg80211_cached_keys *connkeys = NULL; 6209 int err; 6210 6211 memset(&ibss, 0, sizeof(ibss)); 6212 6213 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE])) 6214 return -EINVAL; 6215 6216 if (!info->attrs[NL80211_ATTR_SSID] || 6217 !nla_len(info->attrs[NL80211_ATTR_SSID])) 6218 return -EINVAL; 6219 6220 ibss.beacon_interval = 100; 6221 6222 if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) { 6223 ibss.beacon_interval = 6224 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]); 6225 if (ibss.beacon_interval < 1 || ibss.beacon_interval > 10000) 6226 return -EINVAL; 6227 } 6228 6229 if (!rdev->ops->join_ibss) 6230 return -EOPNOTSUPP; 6231 6232 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC) 6233 return -EOPNOTSUPP; 6234 6235 wiphy = &rdev->wiphy; 6236 6237 if (info->attrs[NL80211_ATTR_MAC]) { 6238 ibss.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]); 6239 6240 if (!is_valid_ether_addr(ibss.bssid)) 6241 return -EINVAL; 6242 } 6243 ibss.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]); 6244 ibss.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]); 6245 6246 if (info->attrs[NL80211_ATTR_IE]) { 6247 ibss.ie = nla_data(info->attrs[NL80211_ATTR_IE]); 6248 ibss.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); 6249 } 6250 6251 err = nl80211_parse_chandef(rdev, info, &ibss.chandef); 6252 if (err) 6253 return err; 6254 6255 if (!cfg80211_reg_can_beacon(&rdev->wiphy, &ibss.chandef)) 6256 return -EINVAL; 6257 6258 if (ibss.chandef.width > NL80211_CHAN_WIDTH_40) 6259 return -EINVAL; 6260 if (ibss.chandef.width != NL80211_CHAN_WIDTH_20_NOHT && 6261 !(rdev->wiphy.features & NL80211_FEATURE_HT_IBSS)) 6262 return -EINVAL; 6263 6264 ibss.channel_fixed = !!info->attrs[NL80211_ATTR_FREQ_FIXED]; 6265 ibss.privacy = !!info->attrs[NL80211_ATTR_PRIVACY]; 6266 6267 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) { 6268 u8 *rates = 6269 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]); 6270 int n_rates = 6271 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]); 6272 struct ieee80211_supported_band *sband = 6273 wiphy->bands[ibss.chandef.chan->band]; 6274 6275 err = ieee80211_get_ratemask(sband, rates, n_rates, 6276 &ibss.basic_rates); 6277 if (err) 6278 return err; 6279 } 6280 6281 if (info->attrs[NL80211_ATTR_MCAST_RATE] && 6282 !nl80211_parse_mcast_rate(rdev, ibss.mcast_rate, 6283 nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE]))) 6284 return -EINVAL; 6285 6286 if (ibss.privacy && info->attrs[NL80211_ATTR_KEYS]) { 6287 bool no_ht = false; 6288 6289 connkeys = nl80211_parse_connkeys(rdev, 6290 info->attrs[NL80211_ATTR_KEYS], 6291 &no_ht); 6292 if (IS_ERR(connkeys)) 6293 return PTR_ERR(connkeys); 6294 6295 if ((ibss.chandef.width != NL80211_CHAN_WIDTH_20_NOHT) && 6296 no_ht) { 6297 kfree(connkeys); 6298 return -EINVAL; 6299 } 6300 } 6301 6302 ibss.control_port = 6303 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT]); 6304 6305 err = cfg80211_join_ibss(rdev, dev, &ibss, connkeys); 6306 if (err) 6307 kfree(connkeys); 6308 return err; 6309 } 6310 6311 static int nl80211_leave_ibss(struct sk_buff *skb, struct genl_info *info) 6312 { 6313 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 6314 struct net_device *dev = info->user_ptr[1]; 6315 6316 if (!rdev->ops->leave_ibss) 6317 return -EOPNOTSUPP; 6318 6319 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC) 6320 return -EOPNOTSUPP; 6321 6322 return cfg80211_leave_ibss(rdev, dev, false); 6323 } 6324 6325 static int nl80211_set_mcast_rate(struct sk_buff *skb, struct genl_info *info) 6326 { 6327 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 6328 struct net_device *dev = info->user_ptr[1]; 6329 int mcast_rate[IEEE80211_NUM_BANDS]; 6330 u32 nla_rate; 6331 int err; 6332 6333 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC && 6334 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT) 6335 return -EOPNOTSUPP; 6336 6337 if (!rdev->ops->set_mcast_rate) 6338 return -EOPNOTSUPP; 6339 6340 memset(mcast_rate, 0, sizeof(mcast_rate)); 6341 6342 if (!info->attrs[NL80211_ATTR_MCAST_RATE]) 6343 return -EINVAL; 6344 6345 nla_rate = nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE]); 6346 if (!nl80211_parse_mcast_rate(rdev, mcast_rate, nla_rate)) 6347 return -EINVAL; 6348 6349 err = rdev->ops->set_mcast_rate(&rdev->wiphy, dev, mcast_rate); 6350 6351 return err; 6352 } 6353 6354 6355 #ifdef CONFIG_NL80211_TESTMODE 6356 static struct genl_multicast_group nl80211_testmode_mcgrp = { 6357 .name = "testmode", 6358 }; 6359 6360 static int nl80211_testmode_do(struct sk_buff *skb, struct genl_info *info) 6361 { 6362 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 6363 int err; 6364 6365 if (!info->attrs[NL80211_ATTR_TESTDATA]) 6366 return -EINVAL; 6367 6368 err = -EOPNOTSUPP; 6369 if (rdev->ops->testmode_cmd) { 6370 rdev->testmode_info = info; 6371 err = rdev_testmode_cmd(rdev, 6372 nla_data(info->attrs[NL80211_ATTR_TESTDATA]), 6373 nla_len(info->attrs[NL80211_ATTR_TESTDATA])); 6374 rdev->testmode_info = NULL; 6375 } 6376 6377 return err; 6378 } 6379 6380 static int nl80211_testmode_dump(struct sk_buff *skb, 6381 struct netlink_callback *cb) 6382 { 6383 struct cfg80211_registered_device *rdev; 6384 int err; 6385 long phy_idx; 6386 void *data = NULL; 6387 int data_len = 0; 6388 6389 if (cb->args[0]) { 6390 /* 6391 * 0 is a valid index, but not valid for args[0], 6392 * so we need to offset by 1. 6393 */ 6394 phy_idx = cb->args[0] - 1; 6395 } else { 6396 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize, 6397 nl80211_fam.attrbuf, nl80211_fam.maxattr, 6398 nl80211_policy); 6399 if (err) 6400 return err; 6401 6402 mutex_lock(&cfg80211_mutex); 6403 rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk), 6404 nl80211_fam.attrbuf); 6405 if (IS_ERR(rdev)) { 6406 mutex_unlock(&cfg80211_mutex); 6407 return PTR_ERR(rdev); 6408 } 6409 phy_idx = rdev->wiphy_idx; 6410 rdev = NULL; 6411 mutex_unlock(&cfg80211_mutex); 6412 6413 if (nl80211_fam.attrbuf[NL80211_ATTR_TESTDATA]) 6414 cb->args[1] = 6415 (long)nl80211_fam.attrbuf[NL80211_ATTR_TESTDATA]; 6416 } 6417 6418 if (cb->args[1]) { 6419 data = nla_data((void *)cb->args[1]); 6420 data_len = nla_len((void *)cb->args[1]); 6421 } 6422 6423 mutex_lock(&cfg80211_mutex); 6424 rdev = cfg80211_rdev_by_wiphy_idx(phy_idx); 6425 if (!rdev) { 6426 mutex_unlock(&cfg80211_mutex); 6427 return -ENOENT; 6428 } 6429 cfg80211_lock_rdev(rdev); 6430 mutex_unlock(&cfg80211_mutex); 6431 6432 if (!rdev->ops->testmode_dump) { 6433 err = -EOPNOTSUPP; 6434 goto out_err; 6435 } 6436 6437 while (1) { 6438 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid, 6439 cb->nlh->nlmsg_seq, NLM_F_MULTI, 6440 NL80211_CMD_TESTMODE); 6441 struct nlattr *tmdata; 6442 6443 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, phy_idx)) { 6444 genlmsg_cancel(skb, hdr); 6445 break; 6446 } 6447 6448 tmdata = nla_nest_start(skb, NL80211_ATTR_TESTDATA); 6449 if (!tmdata) { 6450 genlmsg_cancel(skb, hdr); 6451 break; 6452 } 6453 err = rdev_testmode_dump(rdev, skb, cb, data, data_len); 6454 nla_nest_end(skb, tmdata); 6455 6456 if (err == -ENOBUFS || err == -ENOENT) { 6457 genlmsg_cancel(skb, hdr); 6458 break; 6459 } else if (err) { 6460 genlmsg_cancel(skb, hdr); 6461 goto out_err; 6462 } 6463 6464 genlmsg_end(skb, hdr); 6465 } 6466 6467 err = skb->len; 6468 /* see above */ 6469 cb->args[0] = phy_idx + 1; 6470 out_err: 6471 cfg80211_unlock_rdev(rdev); 6472 return err; 6473 } 6474 6475 static struct sk_buff * 6476 __cfg80211_testmode_alloc_skb(struct cfg80211_registered_device *rdev, 6477 int approxlen, u32 portid, u32 seq, gfp_t gfp) 6478 { 6479 struct sk_buff *skb; 6480 void *hdr; 6481 struct nlattr *data; 6482 6483 skb = nlmsg_new(approxlen + 100, gfp); 6484 if (!skb) 6485 return NULL; 6486 6487 hdr = nl80211hdr_put(skb, portid, seq, 0, NL80211_CMD_TESTMODE); 6488 if (!hdr) { 6489 kfree_skb(skb); 6490 return NULL; 6491 } 6492 6493 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx)) 6494 goto nla_put_failure; 6495 data = nla_nest_start(skb, NL80211_ATTR_TESTDATA); 6496 6497 ((void **)skb->cb)[0] = rdev; 6498 ((void **)skb->cb)[1] = hdr; 6499 ((void **)skb->cb)[2] = data; 6500 6501 return skb; 6502 6503 nla_put_failure: 6504 kfree_skb(skb); 6505 return NULL; 6506 } 6507 6508 struct sk_buff *cfg80211_testmode_alloc_reply_skb(struct wiphy *wiphy, 6509 int approxlen) 6510 { 6511 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); 6512 6513 if (WARN_ON(!rdev->testmode_info)) 6514 return NULL; 6515 6516 return __cfg80211_testmode_alloc_skb(rdev, approxlen, 6517 rdev->testmode_info->snd_portid, 6518 rdev->testmode_info->snd_seq, 6519 GFP_KERNEL); 6520 } 6521 EXPORT_SYMBOL(cfg80211_testmode_alloc_reply_skb); 6522 6523 int cfg80211_testmode_reply(struct sk_buff *skb) 6524 { 6525 struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0]; 6526 void *hdr = ((void **)skb->cb)[1]; 6527 struct nlattr *data = ((void **)skb->cb)[2]; 6528 6529 if (WARN_ON(!rdev->testmode_info)) { 6530 kfree_skb(skb); 6531 return -EINVAL; 6532 } 6533 6534 nla_nest_end(skb, data); 6535 genlmsg_end(skb, hdr); 6536 return genlmsg_reply(skb, rdev->testmode_info); 6537 } 6538 EXPORT_SYMBOL(cfg80211_testmode_reply); 6539 6540 struct sk_buff *cfg80211_testmode_alloc_event_skb(struct wiphy *wiphy, 6541 int approxlen, gfp_t gfp) 6542 { 6543 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); 6544 6545 return __cfg80211_testmode_alloc_skb(rdev, approxlen, 0, 0, gfp); 6546 } 6547 EXPORT_SYMBOL(cfg80211_testmode_alloc_event_skb); 6548 6549 void cfg80211_testmode_event(struct sk_buff *skb, gfp_t gfp) 6550 { 6551 void *hdr = ((void **)skb->cb)[1]; 6552 struct nlattr *data = ((void **)skb->cb)[2]; 6553 6554 nla_nest_end(skb, data); 6555 genlmsg_end(skb, hdr); 6556 genlmsg_multicast(skb, 0, nl80211_testmode_mcgrp.id, gfp); 6557 } 6558 EXPORT_SYMBOL(cfg80211_testmode_event); 6559 #endif 6560 6561 static int nl80211_connect(struct sk_buff *skb, struct genl_info *info) 6562 { 6563 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 6564 struct net_device *dev = info->user_ptr[1]; 6565 struct cfg80211_connect_params connect; 6566 struct wiphy *wiphy; 6567 struct cfg80211_cached_keys *connkeys = NULL; 6568 int err; 6569 6570 memset(&connect, 0, sizeof(connect)); 6571 6572 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE])) 6573 return -EINVAL; 6574 6575 if (!info->attrs[NL80211_ATTR_SSID] || 6576 !nla_len(info->attrs[NL80211_ATTR_SSID])) 6577 return -EINVAL; 6578 6579 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) { 6580 connect.auth_type = 6581 nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]); 6582 if (!nl80211_valid_auth_type(rdev, connect.auth_type, 6583 NL80211_CMD_CONNECT)) 6584 return -EINVAL; 6585 } else 6586 connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC; 6587 6588 connect.privacy = info->attrs[NL80211_ATTR_PRIVACY]; 6589 6590 err = nl80211_crypto_settings(rdev, info, &connect.crypto, 6591 NL80211_MAX_NR_CIPHER_SUITES); 6592 if (err) 6593 return err; 6594 6595 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION && 6596 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) 6597 return -EOPNOTSUPP; 6598 6599 wiphy = &rdev->wiphy; 6600 6601 connect.bg_scan_period = -1; 6602 if (info->attrs[NL80211_ATTR_BG_SCAN_PERIOD] && 6603 (wiphy->flags & WIPHY_FLAG_SUPPORTS_FW_ROAM)) { 6604 connect.bg_scan_period = 6605 nla_get_u16(info->attrs[NL80211_ATTR_BG_SCAN_PERIOD]); 6606 } 6607 6608 if (info->attrs[NL80211_ATTR_MAC]) 6609 connect.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]); 6610 connect.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]); 6611 connect.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]); 6612 6613 if (info->attrs[NL80211_ATTR_IE]) { 6614 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]); 6615 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); 6616 } 6617 6618 if (info->attrs[NL80211_ATTR_USE_MFP]) { 6619 connect.mfp = nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]); 6620 if (connect.mfp != NL80211_MFP_REQUIRED && 6621 connect.mfp != NL80211_MFP_NO) 6622 return -EINVAL; 6623 } else { 6624 connect.mfp = NL80211_MFP_NO; 6625 } 6626 6627 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) { 6628 connect.channel = 6629 ieee80211_get_channel(wiphy, 6630 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ])); 6631 if (!connect.channel || 6632 connect.channel->flags & IEEE80211_CHAN_DISABLED) 6633 return -EINVAL; 6634 } 6635 6636 if (connect.privacy && info->attrs[NL80211_ATTR_KEYS]) { 6637 connkeys = nl80211_parse_connkeys(rdev, 6638 info->attrs[NL80211_ATTR_KEYS], NULL); 6639 if (IS_ERR(connkeys)) 6640 return PTR_ERR(connkeys); 6641 } 6642 6643 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT])) 6644 connect.flags |= ASSOC_REQ_DISABLE_HT; 6645 6646 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) 6647 memcpy(&connect.ht_capa_mask, 6648 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]), 6649 sizeof(connect.ht_capa_mask)); 6650 6651 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) { 6652 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) { 6653 kfree(connkeys); 6654 return -EINVAL; 6655 } 6656 memcpy(&connect.ht_capa, 6657 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]), 6658 sizeof(connect.ht_capa)); 6659 } 6660 6661 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT])) 6662 connect.flags |= ASSOC_REQ_DISABLE_VHT; 6663 6664 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]) 6665 memcpy(&connect.vht_capa_mask, 6666 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]), 6667 sizeof(connect.vht_capa_mask)); 6668 6669 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) { 6670 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]) { 6671 kfree(connkeys); 6672 return -EINVAL; 6673 } 6674 memcpy(&connect.vht_capa, 6675 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]), 6676 sizeof(connect.vht_capa)); 6677 } 6678 6679 err = cfg80211_connect(rdev, dev, &connect, connkeys); 6680 if (err) 6681 kfree(connkeys); 6682 return err; 6683 } 6684 6685 static int nl80211_disconnect(struct sk_buff *skb, struct genl_info *info) 6686 { 6687 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 6688 struct net_device *dev = info->user_ptr[1]; 6689 u16 reason; 6690 6691 if (!info->attrs[NL80211_ATTR_REASON_CODE]) 6692 reason = WLAN_REASON_DEAUTH_LEAVING; 6693 else 6694 reason = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]); 6695 6696 if (reason == 0) 6697 return -EINVAL; 6698 6699 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION && 6700 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) 6701 return -EOPNOTSUPP; 6702 6703 return cfg80211_disconnect(rdev, dev, reason, true); 6704 } 6705 6706 static int nl80211_wiphy_netns(struct sk_buff *skb, struct genl_info *info) 6707 { 6708 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 6709 struct net *net; 6710 int err; 6711 u32 pid; 6712 6713 if (!info->attrs[NL80211_ATTR_PID]) 6714 return -EINVAL; 6715 6716 pid = nla_get_u32(info->attrs[NL80211_ATTR_PID]); 6717 6718 net = get_net_ns_by_pid(pid); 6719 if (IS_ERR(net)) 6720 return PTR_ERR(net); 6721 6722 err = 0; 6723 6724 /* check if anything to do */ 6725 if (!net_eq(wiphy_net(&rdev->wiphy), net)) 6726 err = cfg80211_switch_netns(rdev, net); 6727 6728 put_net(net); 6729 return err; 6730 } 6731 6732 static int nl80211_setdel_pmksa(struct sk_buff *skb, struct genl_info *info) 6733 { 6734 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 6735 int (*rdev_ops)(struct wiphy *wiphy, struct net_device *dev, 6736 struct cfg80211_pmksa *pmksa) = NULL; 6737 struct net_device *dev = info->user_ptr[1]; 6738 struct cfg80211_pmksa pmksa; 6739 6740 memset(&pmksa, 0, sizeof(struct cfg80211_pmksa)); 6741 6742 if (!info->attrs[NL80211_ATTR_MAC]) 6743 return -EINVAL; 6744 6745 if (!info->attrs[NL80211_ATTR_PMKID]) 6746 return -EINVAL; 6747 6748 pmksa.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]); 6749 pmksa.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]); 6750 6751 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION && 6752 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) 6753 return -EOPNOTSUPP; 6754 6755 switch (info->genlhdr->cmd) { 6756 case NL80211_CMD_SET_PMKSA: 6757 rdev_ops = rdev->ops->set_pmksa; 6758 break; 6759 case NL80211_CMD_DEL_PMKSA: 6760 rdev_ops = rdev->ops->del_pmksa; 6761 break; 6762 default: 6763 WARN_ON(1); 6764 break; 6765 } 6766 6767 if (!rdev_ops) 6768 return -EOPNOTSUPP; 6769 6770 return rdev_ops(&rdev->wiphy, dev, &pmksa); 6771 } 6772 6773 static int nl80211_flush_pmksa(struct sk_buff *skb, struct genl_info *info) 6774 { 6775 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 6776 struct net_device *dev = info->user_ptr[1]; 6777 6778 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION && 6779 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) 6780 return -EOPNOTSUPP; 6781 6782 if (!rdev->ops->flush_pmksa) 6783 return -EOPNOTSUPP; 6784 6785 return rdev_flush_pmksa(rdev, dev); 6786 } 6787 6788 static int nl80211_tdls_mgmt(struct sk_buff *skb, struct genl_info *info) 6789 { 6790 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 6791 struct net_device *dev = info->user_ptr[1]; 6792 u8 action_code, dialog_token; 6793 u16 status_code; 6794 u8 *peer; 6795 6796 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) || 6797 !rdev->ops->tdls_mgmt) 6798 return -EOPNOTSUPP; 6799 6800 if (!info->attrs[NL80211_ATTR_TDLS_ACTION] || 6801 !info->attrs[NL80211_ATTR_STATUS_CODE] || 6802 !info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN] || 6803 !info->attrs[NL80211_ATTR_IE] || 6804 !info->attrs[NL80211_ATTR_MAC]) 6805 return -EINVAL; 6806 6807 peer = nla_data(info->attrs[NL80211_ATTR_MAC]); 6808 action_code = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_ACTION]); 6809 status_code = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]); 6810 dialog_token = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN]); 6811 6812 return rdev_tdls_mgmt(rdev, dev, peer, action_code, 6813 dialog_token, status_code, 6814 nla_data(info->attrs[NL80211_ATTR_IE]), 6815 nla_len(info->attrs[NL80211_ATTR_IE])); 6816 } 6817 6818 static int nl80211_tdls_oper(struct sk_buff *skb, struct genl_info *info) 6819 { 6820 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 6821 struct net_device *dev = info->user_ptr[1]; 6822 enum nl80211_tdls_operation operation; 6823 u8 *peer; 6824 6825 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) || 6826 !rdev->ops->tdls_oper) 6827 return -EOPNOTSUPP; 6828 6829 if (!info->attrs[NL80211_ATTR_TDLS_OPERATION] || 6830 !info->attrs[NL80211_ATTR_MAC]) 6831 return -EINVAL; 6832 6833 operation = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_OPERATION]); 6834 peer = nla_data(info->attrs[NL80211_ATTR_MAC]); 6835 6836 return rdev_tdls_oper(rdev, dev, peer, operation); 6837 } 6838 6839 static int nl80211_remain_on_channel(struct sk_buff *skb, 6840 struct genl_info *info) 6841 { 6842 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 6843 struct wireless_dev *wdev = info->user_ptr[1]; 6844 struct cfg80211_chan_def chandef; 6845 struct sk_buff *msg; 6846 void *hdr; 6847 u64 cookie; 6848 u32 duration; 6849 int err; 6850 6851 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] || 6852 !info->attrs[NL80211_ATTR_DURATION]) 6853 return -EINVAL; 6854 6855 duration = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]); 6856 6857 if (!rdev->ops->remain_on_channel || 6858 !(rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL)) 6859 return -EOPNOTSUPP; 6860 6861 /* 6862 * We should be on that channel for at least a minimum amount of 6863 * time (10ms) but no longer than the driver supports. 6864 */ 6865 if (duration < NL80211_MIN_REMAIN_ON_CHANNEL_TIME || 6866 duration > rdev->wiphy.max_remain_on_channel_duration) 6867 return -EINVAL; 6868 6869 err = nl80211_parse_chandef(rdev, info, &chandef); 6870 if (err) 6871 return err; 6872 6873 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 6874 if (!msg) 6875 return -ENOMEM; 6876 6877 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0, 6878 NL80211_CMD_REMAIN_ON_CHANNEL); 6879 6880 if (IS_ERR(hdr)) { 6881 err = PTR_ERR(hdr); 6882 goto free_msg; 6883 } 6884 6885 err = rdev_remain_on_channel(rdev, wdev, chandef.chan, 6886 duration, &cookie); 6887 6888 if (err) 6889 goto free_msg; 6890 6891 if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie)) 6892 goto nla_put_failure; 6893 6894 genlmsg_end(msg, hdr); 6895 6896 return genlmsg_reply(msg, info); 6897 6898 nla_put_failure: 6899 err = -ENOBUFS; 6900 free_msg: 6901 nlmsg_free(msg); 6902 return err; 6903 } 6904 6905 static int nl80211_cancel_remain_on_channel(struct sk_buff *skb, 6906 struct genl_info *info) 6907 { 6908 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 6909 struct wireless_dev *wdev = info->user_ptr[1]; 6910 u64 cookie; 6911 6912 if (!info->attrs[NL80211_ATTR_COOKIE]) 6913 return -EINVAL; 6914 6915 if (!rdev->ops->cancel_remain_on_channel) 6916 return -EOPNOTSUPP; 6917 6918 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]); 6919 6920 return rdev_cancel_remain_on_channel(rdev, wdev, cookie); 6921 } 6922 6923 static u32 rateset_to_mask(struct ieee80211_supported_band *sband, 6924 u8 *rates, u8 rates_len) 6925 { 6926 u8 i; 6927 u32 mask = 0; 6928 6929 for (i = 0; i < rates_len; i++) { 6930 int rate = (rates[i] & 0x7f) * 5; 6931 int ridx; 6932 for (ridx = 0; ridx < sband->n_bitrates; ridx++) { 6933 struct ieee80211_rate *srate = 6934 &sband->bitrates[ridx]; 6935 if (rate == srate->bitrate) { 6936 mask |= 1 << ridx; 6937 break; 6938 } 6939 } 6940 if (ridx == sband->n_bitrates) 6941 return 0; /* rate not found */ 6942 } 6943 6944 return mask; 6945 } 6946 6947 static bool ht_rateset_to_mask(struct ieee80211_supported_band *sband, 6948 u8 *rates, u8 rates_len, 6949 u8 mcs[IEEE80211_HT_MCS_MASK_LEN]) 6950 { 6951 u8 i; 6952 6953 memset(mcs, 0, IEEE80211_HT_MCS_MASK_LEN); 6954 6955 for (i = 0; i < rates_len; i++) { 6956 int ridx, rbit; 6957 6958 ridx = rates[i] / 8; 6959 rbit = BIT(rates[i] % 8); 6960 6961 /* check validity */ 6962 if ((ridx < 0) || (ridx >= IEEE80211_HT_MCS_MASK_LEN)) 6963 return false; 6964 6965 /* check availability */ 6966 if (sband->ht_cap.mcs.rx_mask[ridx] & rbit) 6967 mcs[ridx] |= rbit; 6968 else 6969 return false; 6970 } 6971 6972 return true; 6973 } 6974 6975 static const struct nla_policy nl80211_txattr_policy[NL80211_TXRATE_MAX + 1] = { 6976 [NL80211_TXRATE_LEGACY] = { .type = NLA_BINARY, 6977 .len = NL80211_MAX_SUPP_RATES }, 6978 [NL80211_TXRATE_MCS] = { .type = NLA_BINARY, 6979 .len = NL80211_MAX_SUPP_HT_RATES }, 6980 }; 6981 6982 static int nl80211_set_tx_bitrate_mask(struct sk_buff *skb, 6983 struct genl_info *info) 6984 { 6985 struct nlattr *tb[NL80211_TXRATE_MAX + 1]; 6986 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 6987 struct cfg80211_bitrate_mask mask; 6988 int rem, i; 6989 struct net_device *dev = info->user_ptr[1]; 6990 struct nlattr *tx_rates; 6991 struct ieee80211_supported_band *sband; 6992 6993 if (info->attrs[NL80211_ATTR_TX_RATES] == NULL) 6994 return -EINVAL; 6995 6996 if (!rdev->ops->set_bitrate_mask) 6997 return -EOPNOTSUPP; 6998 6999 memset(&mask, 0, sizeof(mask)); 7000 /* Default to all rates enabled */ 7001 for (i = 0; i < IEEE80211_NUM_BANDS; i++) { 7002 sband = rdev->wiphy.bands[i]; 7003 mask.control[i].legacy = 7004 sband ? (1 << sband->n_bitrates) - 1 : 0; 7005 if (sband) 7006 memcpy(mask.control[i].mcs, 7007 sband->ht_cap.mcs.rx_mask, 7008 sizeof(mask.control[i].mcs)); 7009 else 7010 memset(mask.control[i].mcs, 0, 7011 sizeof(mask.control[i].mcs)); 7012 } 7013 7014 /* 7015 * The nested attribute uses enum nl80211_band as the index. This maps 7016 * directly to the enum ieee80211_band values used in cfg80211. 7017 */ 7018 BUILD_BUG_ON(NL80211_MAX_SUPP_HT_RATES > IEEE80211_HT_MCS_MASK_LEN * 8); 7019 nla_for_each_nested(tx_rates, info->attrs[NL80211_ATTR_TX_RATES], rem) 7020 { 7021 enum ieee80211_band band = nla_type(tx_rates); 7022 if (band < 0 || band >= IEEE80211_NUM_BANDS) 7023 return -EINVAL; 7024 sband = rdev->wiphy.bands[band]; 7025 if (sband == NULL) 7026 return -EINVAL; 7027 nla_parse(tb, NL80211_TXRATE_MAX, nla_data(tx_rates), 7028 nla_len(tx_rates), nl80211_txattr_policy); 7029 if (tb[NL80211_TXRATE_LEGACY]) { 7030 mask.control[band].legacy = rateset_to_mask( 7031 sband, 7032 nla_data(tb[NL80211_TXRATE_LEGACY]), 7033 nla_len(tb[NL80211_TXRATE_LEGACY])); 7034 if ((mask.control[band].legacy == 0) && 7035 nla_len(tb[NL80211_TXRATE_LEGACY])) 7036 return -EINVAL; 7037 } 7038 if (tb[NL80211_TXRATE_MCS]) { 7039 if (!ht_rateset_to_mask( 7040 sband, 7041 nla_data(tb[NL80211_TXRATE_MCS]), 7042 nla_len(tb[NL80211_TXRATE_MCS]), 7043 mask.control[band].mcs)) 7044 return -EINVAL; 7045 } 7046 7047 if (mask.control[band].legacy == 0) { 7048 /* don't allow empty legacy rates if HT 7049 * is not even supported. */ 7050 if (!rdev->wiphy.bands[band]->ht_cap.ht_supported) 7051 return -EINVAL; 7052 7053 for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++) 7054 if (mask.control[band].mcs[i]) 7055 break; 7056 7057 /* legacy and mcs rates may not be both empty */ 7058 if (i == IEEE80211_HT_MCS_MASK_LEN) 7059 return -EINVAL; 7060 } 7061 } 7062 7063 return rdev_set_bitrate_mask(rdev, dev, NULL, &mask); 7064 } 7065 7066 static int nl80211_register_mgmt(struct sk_buff *skb, struct genl_info *info) 7067 { 7068 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 7069 struct wireless_dev *wdev = info->user_ptr[1]; 7070 u16 frame_type = IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION; 7071 7072 if (!info->attrs[NL80211_ATTR_FRAME_MATCH]) 7073 return -EINVAL; 7074 7075 if (info->attrs[NL80211_ATTR_FRAME_TYPE]) 7076 frame_type = nla_get_u16(info->attrs[NL80211_ATTR_FRAME_TYPE]); 7077 7078 switch (wdev->iftype) { 7079 case NL80211_IFTYPE_STATION: 7080 case NL80211_IFTYPE_ADHOC: 7081 case NL80211_IFTYPE_P2P_CLIENT: 7082 case NL80211_IFTYPE_AP: 7083 case NL80211_IFTYPE_AP_VLAN: 7084 case NL80211_IFTYPE_MESH_POINT: 7085 case NL80211_IFTYPE_P2P_GO: 7086 case NL80211_IFTYPE_P2P_DEVICE: 7087 break; 7088 default: 7089 return -EOPNOTSUPP; 7090 } 7091 7092 /* not much point in registering if we can't reply */ 7093 if (!rdev->ops->mgmt_tx) 7094 return -EOPNOTSUPP; 7095 7096 return cfg80211_mlme_register_mgmt(wdev, info->snd_portid, frame_type, 7097 nla_data(info->attrs[NL80211_ATTR_FRAME_MATCH]), 7098 nla_len(info->attrs[NL80211_ATTR_FRAME_MATCH])); 7099 } 7100 7101 static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info) 7102 { 7103 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 7104 struct wireless_dev *wdev = info->user_ptr[1]; 7105 struct cfg80211_chan_def chandef; 7106 int err; 7107 void *hdr = NULL; 7108 u64 cookie; 7109 struct sk_buff *msg = NULL; 7110 unsigned int wait = 0; 7111 bool offchan, no_cck, dont_wait_for_ack; 7112 7113 dont_wait_for_ack = info->attrs[NL80211_ATTR_DONT_WAIT_FOR_ACK]; 7114 7115 if (!info->attrs[NL80211_ATTR_FRAME]) 7116 return -EINVAL; 7117 7118 if (!rdev->ops->mgmt_tx) 7119 return -EOPNOTSUPP; 7120 7121 switch (wdev->iftype) { 7122 case NL80211_IFTYPE_STATION: 7123 case NL80211_IFTYPE_ADHOC: 7124 case NL80211_IFTYPE_P2P_CLIENT: 7125 case NL80211_IFTYPE_AP: 7126 case NL80211_IFTYPE_AP_VLAN: 7127 case NL80211_IFTYPE_MESH_POINT: 7128 case NL80211_IFTYPE_P2P_GO: 7129 case NL80211_IFTYPE_P2P_DEVICE: 7130 break; 7131 default: 7132 return -EOPNOTSUPP; 7133 } 7134 7135 if (info->attrs[NL80211_ATTR_DURATION]) { 7136 if (!(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX)) 7137 return -EINVAL; 7138 wait = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]); 7139 7140 /* 7141 * We should wait on the channel for at least a minimum amount 7142 * of time (10ms) but no longer than the driver supports. 7143 */ 7144 if (wait < NL80211_MIN_REMAIN_ON_CHANNEL_TIME || 7145 wait > rdev->wiphy.max_remain_on_channel_duration) 7146 return -EINVAL; 7147 7148 } 7149 7150 offchan = info->attrs[NL80211_ATTR_OFFCHANNEL_TX_OK]; 7151 7152 if (offchan && !(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX)) 7153 return -EINVAL; 7154 7155 no_cck = nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]); 7156 7157 err = nl80211_parse_chandef(rdev, info, &chandef); 7158 if (err) 7159 return err; 7160 7161 if (!dont_wait_for_ack) { 7162 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 7163 if (!msg) 7164 return -ENOMEM; 7165 7166 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0, 7167 NL80211_CMD_FRAME); 7168 7169 if (IS_ERR(hdr)) { 7170 err = PTR_ERR(hdr); 7171 goto free_msg; 7172 } 7173 } 7174 7175 err = cfg80211_mlme_mgmt_tx(rdev, wdev, chandef.chan, offchan, wait, 7176 nla_data(info->attrs[NL80211_ATTR_FRAME]), 7177 nla_len(info->attrs[NL80211_ATTR_FRAME]), 7178 no_cck, dont_wait_for_ack, &cookie); 7179 if (err) 7180 goto free_msg; 7181 7182 if (msg) { 7183 if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie)) 7184 goto nla_put_failure; 7185 7186 genlmsg_end(msg, hdr); 7187 return genlmsg_reply(msg, info); 7188 } 7189 7190 return 0; 7191 7192 nla_put_failure: 7193 err = -ENOBUFS; 7194 free_msg: 7195 nlmsg_free(msg); 7196 return err; 7197 } 7198 7199 static int nl80211_tx_mgmt_cancel_wait(struct sk_buff *skb, struct genl_info *info) 7200 { 7201 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 7202 struct wireless_dev *wdev = info->user_ptr[1]; 7203 u64 cookie; 7204 7205 if (!info->attrs[NL80211_ATTR_COOKIE]) 7206 return -EINVAL; 7207 7208 if (!rdev->ops->mgmt_tx_cancel_wait) 7209 return -EOPNOTSUPP; 7210 7211 switch (wdev->iftype) { 7212 case NL80211_IFTYPE_STATION: 7213 case NL80211_IFTYPE_ADHOC: 7214 case NL80211_IFTYPE_P2P_CLIENT: 7215 case NL80211_IFTYPE_AP: 7216 case NL80211_IFTYPE_AP_VLAN: 7217 case NL80211_IFTYPE_P2P_GO: 7218 case NL80211_IFTYPE_P2P_DEVICE: 7219 break; 7220 default: 7221 return -EOPNOTSUPP; 7222 } 7223 7224 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]); 7225 7226 return rdev_mgmt_tx_cancel_wait(rdev, wdev, cookie); 7227 } 7228 7229 static int nl80211_set_power_save(struct sk_buff *skb, struct genl_info *info) 7230 { 7231 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 7232 struct wireless_dev *wdev; 7233 struct net_device *dev = info->user_ptr[1]; 7234 u8 ps_state; 7235 bool state; 7236 int err; 7237 7238 if (!info->attrs[NL80211_ATTR_PS_STATE]) 7239 return -EINVAL; 7240 7241 ps_state = nla_get_u32(info->attrs[NL80211_ATTR_PS_STATE]); 7242 7243 if (ps_state != NL80211_PS_DISABLED && ps_state != NL80211_PS_ENABLED) 7244 return -EINVAL; 7245 7246 wdev = dev->ieee80211_ptr; 7247 7248 if (!rdev->ops->set_power_mgmt) 7249 return -EOPNOTSUPP; 7250 7251 state = (ps_state == NL80211_PS_ENABLED) ? true : false; 7252 7253 if (state == wdev->ps) 7254 return 0; 7255 7256 err = rdev_set_power_mgmt(rdev, dev, state, wdev->ps_timeout); 7257 if (!err) 7258 wdev->ps = state; 7259 return err; 7260 } 7261 7262 static int nl80211_get_power_save(struct sk_buff *skb, struct genl_info *info) 7263 { 7264 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 7265 enum nl80211_ps_state ps_state; 7266 struct wireless_dev *wdev; 7267 struct net_device *dev = info->user_ptr[1]; 7268 struct sk_buff *msg; 7269 void *hdr; 7270 int err; 7271 7272 wdev = dev->ieee80211_ptr; 7273 7274 if (!rdev->ops->set_power_mgmt) 7275 return -EOPNOTSUPP; 7276 7277 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 7278 if (!msg) 7279 return -ENOMEM; 7280 7281 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0, 7282 NL80211_CMD_GET_POWER_SAVE); 7283 if (!hdr) { 7284 err = -ENOBUFS; 7285 goto free_msg; 7286 } 7287 7288 if (wdev->ps) 7289 ps_state = NL80211_PS_ENABLED; 7290 else 7291 ps_state = NL80211_PS_DISABLED; 7292 7293 if (nla_put_u32(msg, NL80211_ATTR_PS_STATE, ps_state)) 7294 goto nla_put_failure; 7295 7296 genlmsg_end(msg, hdr); 7297 return genlmsg_reply(msg, info); 7298 7299 nla_put_failure: 7300 err = -ENOBUFS; 7301 free_msg: 7302 nlmsg_free(msg); 7303 return err; 7304 } 7305 7306 static struct nla_policy 7307 nl80211_attr_cqm_policy[NL80211_ATTR_CQM_MAX + 1] __read_mostly = { 7308 [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_U32 }, 7309 [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U32 }, 7310 [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 }, 7311 [NL80211_ATTR_CQM_TXE_RATE] = { .type = NLA_U32 }, 7312 [NL80211_ATTR_CQM_TXE_PKTS] = { .type = NLA_U32 }, 7313 [NL80211_ATTR_CQM_TXE_INTVL] = { .type = NLA_U32 }, 7314 }; 7315 7316 static int nl80211_set_cqm_txe(struct genl_info *info, 7317 u32 rate, u32 pkts, u32 intvl) 7318 { 7319 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 7320 struct wireless_dev *wdev; 7321 struct net_device *dev = info->user_ptr[1]; 7322 7323 if (rate > 100 || intvl > NL80211_CQM_TXE_MAX_INTVL) 7324 return -EINVAL; 7325 7326 wdev = dev->ieee80211_ptr; 7327 7328 if (!rdev->ops->set_cqm_txe_config) 7329 return -EOPNOTSUPP; 7330 7331 if (wdev->iftype != NL80211_IFTYPE_STATION && 7332 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT) 7333 return -EOPNOTSUPP; 7334 7335 return rdev_set_cqm_txe_config(rdev, dev, rate, pkts, intvl); 7336 } 7337 7338 static int nl80211_set_cqm_rssi(struct genl_info *info, 7339 s32 threshold, u32 hysteresis) 7340 { 7341 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 7342 struct wireless_dev *wdev; 7343 struct net_device *dev = info->user_ptr[1]; 7344 7345 if (threshold > 0) 7346 return -EINVAL; 7347 7348 wdev = dev->ieee80211_ptr; 7349 7350 if (!rdev->ops->set_cqm_rssi_config) 7351 return -EOPNOTSUPP; 7352 7353 if (wdev->iftype != NL80211_IFTYPE_STATION && 7354 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT) 7355 return -EOPNOTSUPP; 7356 7357 return rdev_set_cqm_rssi_config(rdev, dev, threshold, hysteresis); 7358 } 7359 7360 static int nl80211_set_cqm(struct sk_buff *skb, struct genl_info *info) 7361 { 7362 struct nlattr *attrs[NL80211_ATTR_CQM_MAX + 1]; 7363 struct nlattr *cqm; 7364 int err; 7365 7366 cqm = info->attrs[NL80211_ATTR_CQM]; 7367 if (!cqm) { 7368 err = -EINVAL; 7369 goto out; 7370 } 7371 7372 err = nla_parse_nested(attrs, NL80211_ATTR_CQM_MAX, cqm, 7373 nl80211_attr_cqm_policy); 7374 if (err) 7375 goto out; 7376 7377 if (attrs[NL80211_ATTR_CQM_RSSI_THOLD] && 7378 attrs[NL80211_ATTR_CQM_RSSI_HYST]) { 7379 s32 threshold; 7380 u32 hysteresis; 7381 threshold = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_THOLD]); 7382 hysteresis = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_HYST]); 7383 err = nl80211_set_cqm_rssi(info, threshold, hysteresis); 7384 } else if (attrs[NL80211_ATTR_CQM_TXE_RATE] && 7385 attrs[NL80211_ATTR_CQM_TXE_PKTS] && 7386 attrs[NL80211_ATTR_CQM_TXE_INTVL]) { 7387 u32 rate, pkts, intvl; 7388 rate = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_RATE]); 7389 pkts = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_PKTS]); 7390 intvl = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_INTVL]); 7391 err = nl80211_set_cqm_txe(info, rate, pkts, intvl); 7392 } else 7393 err = -EINVAL; 7394 7395 out: 7396 return err; 7397 } 7398 7399 static int nl80211_join_mesh(struct sk_buff *skb, struct genl_info *info) 7400 { 7401 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 7402 struct net_device *dev = info->user_ptr[1]; 7403 struct mesh_config cfg; 7404 struct mesh_setup setup; 7405 int err; 7406 7407 /* start with default */ 7408 memcpy(&cfg, &default_mesh_config, sizeof(cfg)); 7409 memcpy(&setup, &default_mesh_setup, sizeof(setup)); 7410 7411 if (info->attrs[NL80211_ATTR_MESH_CONFIG]) { 7412 /* and parse parameters if given */ 7413 err = nl80211_parse_mesh_config(info, &cfg, NULL); 7414 if (err) 7415 return err; 7416 } 7417 7418 if (!info->attrs[NL80211_ATTR_MESH_ID] || 7419 !nla_len(info->attrs[NL80211_ATTR_MESH_ID])) 7420 return -EINVAL; 7421 7422 setup.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]); 7423 setup.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]); 7424 7425 if (info->attrs[NL80211_ATTR_MCAST_RATE] && 7426 !nl80211_parse_mcast_rate(rdev, setup.mcast_rate, 7427 nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE]))) 7428 return -EINVAL; 7429 7430 if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) { 7431 setup.beacon_interval = 7432 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]); 7433 if (setup.beacon_interval < 10 || 7434 setup.beacon_interval > 10000) 7435 return -EINVAL; 7436 } 7437 7438 if (info->attrs[NL80211_ATTR_DTIM_PERIOD]) { 7439 setup.dtim_period = 7440 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]); 7441 if (setup.dtim_period < 1 || setup.dtim_period > 100) 7442 return -EINVAL; 7443 } 7444 7445 if (info->attrs[NL80211_ATTR_MESH_SETUP]) { 7446 /* parse additional setup parameters if given */ 7447 err = nl80211_parse_mesh_setup(info, &setup); 7448 if (err) 7449 return err; 7450 } 7451 7452 if (setup.user_mpm) 7453 cfg.auto_open_plinks = false; 7454 7455 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) { 7456 err = nl80211_parse_chandef(rdev, info, &setup.chandef); 7457 if (err) 7458 return err; 7459 } else { 7460 /* cfg80211_join_mesh() will sort it out */ 7461 setup.chandef.chan = NULL; 7462 } 7463 7464 return cfg80211_join_mesh(rdev, dev, &setup, &cfg); 7465 } 7466 7467 static int nl80211_leave_mesh(struct sk_buff *skb, struct genl_info *info) 7468 { 7469 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 7470 struct net_device *dev = info->user_ptr[1]; 7471 7472 return cfg80211_leave_mesh(rdev, dev); 7473 } 7474 7475 #ifdef CONFIG_PM 7476 static int nl80211_send_wowlan_patterns(struct sk_buff *msg, 7477 struct cfg80211_registered_device *rdev) 7478 { 7479 struct nlattr *nl_pats, *nl_pat; 7480 int i, pat_len; 7481 7482 if (!rdev->wowlan->n_patterns) 7483 return 0; 7484 7485 nl_pats = nla_nest_start(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN); 7486 if (!nl_pats) 7487 return -ENOBUFS; 7488 7489 for (i = 0; i < rdev->wowlan->n_patterns; i++) { 7490 nl_pat = nla_nest_start(msg, i + 1); 7491 if (!nl_pat) 7492 return -ENOBUFS; 7493 pat_len = rdev->wowlan->patterns[i].pattern_len; 7494 if (nla_put(msg, NL80211_WOWLAN_PKTPAT_MASK, 7495 DIV_ROUND_UP(pat_len, 8), 7496 rdev->wowlan->patterns[i].mask) || 7497 nla_put(msg, NL80211_WOWLAN_PKTPAT_PATTERN, 7498 pat_len, rdev->wowlan->patterns[i].pattern) || 7499 nla_put_u32(msg, NL80211_WOWLAN_PKTPAT_OFFSET, 7500 rdev->wowlan->patterns[i].pkt_offset)) 7501 return -ENOBUFS; 7502 nla_nest_end(msg, nl_pat); 7503 } 7504 nla_nest_end(msg, nl_pats); 7505 7506 return 0; 7507 } 7508 7509 static int nl80211_send_wowlan_tcp(struct sk_buff *msg, 7510 struct cfg80211_wowlan_tcp *tcp) 7511 { 7512 struct nlattr *nl_tcp; 7513 7514 if (!tcp) 7515 return 0; 7516 7517 nl_tcp = nla_nest_start(msg, NL80211_WOWLAN_TRIG_TCP_CONNECTION); 7518 if (!nl_tcp) 7519 return -ENOBUFS; 7520 7521 if (nla_put_be32(msg, NL80211_WOWLAN_TCP_SRC_IPV4, tcp->src) || 7522 nla_put_be32(msg, NL80211_WOWLAN_TCP_DST_IPV4, tcp->dst) || 7523 nla_put(msg, NL80211_WOWLAN_TCP_DST_MAC, ETH_ALEN, tcp->dst_mac) || 7524 nla_put_u16(msg, NL80211_WOWLAN_TCP_SRC_PORT, tcp->src_port) || 7525 nla_put_u16(msg, NL80211_WOWLAN_TCP_DST_PORT, tcp->dst_port) || 7526 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD, 7527 tcp->payload_len, tcp->payload) || 7528 nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL, 7529 tcp->data_interval) || 7530 nla_put(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD, 7531 tcp->wake_len, tcp->wake_data) || 7532 nla_put(msg, NL80211_WOWLAN_TCP_WAKE_MASK, 7533 DIV_ROUND_UP(tcp->wake_len, 8), tcp->wake_mask)) 7534 return -ENOBUFS; 7535 7536 if (tcp->payload_seq.len && 7537 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ, 7538 sizeof(tcp->payload_seq), &tcp->payload_seq)) 7539 return -ENOBUFS; 7540 7541 if (tcp->payload_tok.len && 7542 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN, 7543 sizeof(tcp->payload_tok) + tcp->tokens_size, 7544 &tcp->payload_tok)) 7545 return -ENOBUFS; 7546 7547 return 0; 7548 } 7549 7550 static int nl80211_get_wowlan(struct sk_buff *skb, struct genl_info *info) 7551 { 7552 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 7553 struct sk_buff *msg; 7554 void *hdr; 7555 u32 size = NLMSG_DEFAULT_SIZE; 7556 7557 if (!rdev->wiphy.wowlan.flags && !rdev->wiphy.wowlan.n_patterns && 7558 !rdev->wiphy.wowlan.tcp) 7559 return -EOPNOTSUPP; 7560 7561 if (rdev->wowlan && rdev->wowlan->tcp) { 7562 /* adjust size to have room for all the data */ 7563 size += rdev->wowlan->tcp->tokens_size + 7564 rdev->wowlan->tcp->payload_len + 7565 rdev->wowlan->tcp->wake_len + 7566 rdev->wowlan->tcp->wake_len / 8; 7567 } 7568 7569 msg = nlmsg_new(size, GFP_KERNEL); 7570 if (!msg) 7571 return -ENOMEM; 7572 7573 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0, 7574 NL80211_CMD_GET_WOWLAN); 7575 if (!hdr) 7576 goto nla_put_failure; 7577 7578 if (rdev->wowlan) { 7579 struct nlattr *nl_wowlan; 7580 7581 nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS); 7582 if (!nl_wowlan) 7583 goto nla_put_failure; 7584 7585 if ((rdev->wowlan->any && 7586 nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) || 7587 (rdev->wowlan->disconnect && 7588 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) || 7589 (rdev->wowlan->magic_pkt && 7590 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) || 7591 (rdev->wowlan->gtk_rekey_failure && 7592 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) || 7593 (rdev->wowlan->eap_identity_req && 7594 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) || 7595 (rdev->wowlan->four_way_handshake && 7596 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) || 7597 (rdev->wowlan->rfkill_release && 7598 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE))) 7599 goto nla_put_failure; 7600 7601 if (nl80211_send_wowlan_patterns(msg, rdev)) 7602 goto nla_put_failure; 7603 7604 if (nl80211_send_wowlan_tcp(msg, rdev->wowlan->tcp)) 7605 goto nla_put_failure; 7606 7607 nla_nest_end(msg, nl_wowlan); 7608 } 7609 7610 genlmsg_end(msg, hdr); 7611 return genlmsg_reply(msg, info); 7612 7613 nla_put_failure: 7614 nlmsg_free(msg); 7615 return -ENOBUFS; 7616 } 7617 7618 static int nl80211_parse_wowlan_tcp(struct cfg80211_registered_device *rdev, 7619 struct nlattr *attr, 7620 struct cfg80211_wowlan *trig) 7621 { 7622 struct nlattr *tb[NUM_NL80211_WOWLAN_TCP]; 7623 struct cfg80211_wowlan_tcp *cfg; 7624 struct nl80211_wowlan_tcp_data_token *tok = NULL; 7625 struct nl80211_wowlan_tcp_data_seq *seq = NULL; 7626 u32 size; 7627 u32 data_size, wake_size, tokens_size = 0, wake_mask_size; 7628 int err, port; 7629 7630 if (!rdev->wiphy.wowlan.tcp) 7631 return -EINVAL; 7632 7633 err = nla_parse(tb, MAX_NL80211_WOWLAN_TCP, 7634 nla_data(attr), nla_len(attr), 7635 nl80211_wowlan_tcp_policy); 7636 if (err) 7637 return err; 7638 7639 if (!tb[NL80211_WOWLAN_TCP_SRC_IPV4] || 7640 !tb[NL80211_WOWLAN_TCP_DST_IPV4] || 7641 !tb[NL80211_WOWLAN_TCP_DST_MAC] || 7642 !tb[NL80211_WOWLAN_TCP_DST_PORT] || 7643 !tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD] || 7644 !tb[NL80211_WOWLAN_TCP_DATA_INTERVAL] || 7645 !tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD] || 7646 !tb[NL80211_WOWLAN_TCP_WAKE_MASK]) 7647 return -EINVAL; 7648 7649 data_size = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]); 7650 if (data_size > rdev->wiphy.wowlan.tcp->data_payload_max) 7651 return -EINVAL; 7652 7653 if (nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) > 7654 rdev->wiphy.wowlan.tcp->data_interval_max || 7655 nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) == 0) 7656 return -EINVAL; 7657 7658 wake_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]); 7659 if (wake_size > rdev->wiphy.wowlan.tcp->wake_payload_max) 7660 return -EINVAL; 7661 7662 wake_mask_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_MASK]); 7663 if (wake_mask_size != DIV_ROUND_UP(wake_size, 8)) 7664 return -EINVAL; 7665 7666 if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]) { 7667 u32 tokln = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]); 7668 7669 tok = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]); 7670 tokens_size = tokln - sizeof(*tok); 7671 7672 if (!tok->len || tokens_size % tok->len) 7673 return -EINVAL; 7674 if (!rdev->wiphy.wowlan.tcp->tok) 7675 return -EINVAL; 7676 if (tok->len > rdev->wiphy.wowlan.tcp->tok->max_len) 7677 return -EINVAL; 7678 if (tok->len < rdev->wiphy.wowlan.tcp->tok->min_len) 7679 return -EINVAL; 7680 if (tokens_size > rdev->wiphy.wowlan.tcp->tok->bufsize) 7681 return -EINVAL; 7682 if (tok->offset + tok->len > data_size) 7683 return -EINVAL; 7684 } 7685 7686 if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]) { 7687 seq = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]); 7688 if (!rdev->wiphy.wowlan.tcp->seq) 7689 return -EINVAL; 7690 if (seq->len == 0 || seq->len > 4) 7691 return -EINVAL; 7692 if (seq->len + seq->offset > data_size) 7693 return -EINVAL; 7694 } 7695 7696 size = sizeof(*cfg); 7697 size += data_size; 7698 size += wake_size + wake_mask_size; 7699 size += tokens_size; 7700 7701 cfg = kzalloc(size, GFP_KERNEL); 7702 if (!cfg) 7703 return -ENOMEM; 7704 cfg->src = nla_get_be32(tb[NL80211_WOWLAN_TCP_SRC_IPV4]); 7705 cfg->dst = nla_get_be32(tb[NL80211_WOWLAN_TCP_DST_IPV4]); 7706 memcpy(cfg->dst_mac, nla_data(tb[NL80211_WOWLAN_TCP_DST_MAC]), 7707 ETH_ALEN); 7708 if (tb[NL80211_WOWLAN_TCP_SRC_PORT]) 7709 port = nla_get_u16(tb[NL80211_WOWLAN_TCP_SRC_PORT]); 7710 else 7711 port = 0; 7712 #ifdef CONFIG_INET 7713 /* allocate a socket and port for it and use it */ 7714 err = __sock_create(wiphy_net(&rdev->wiphy), PF_INET, SOCK_STREAM, 7715 IPPROTO_TCP, &cfg->sock, 1); 7716 if (err) { 7717 kfree(cfg); 7718 return err; 7719 } 7720 if (inet_csk_get_port(cfg->sock->sk, port)) { 7721 sock_release(cfg->sock); 7722 kfree(cfg); 7723 return -EADDRINUSE; 7724 } 7725 cfg->src_port = inet_sk(cfg->sock->sk)->inet_num; 7726 #else 7727 if (!port) { 7728 kfree(cfg); 7729 return -EINVAL; 7730 } 7731 cfg->src_port = port; 7732 #endif 7733 7734 cfg->dst_port = nla_get_u16(tb[NL80211_WOWLAN_TCP_DST_PORT]); 7735 cfg->payload_len = data_size; 7736 cfg->payload = (u8 *)cfg + sizeof(*cfg) + tokens_size; 7737 memcpy((void *)cfg->payload, 7738 nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]), 7739 data_size); 7740 if (seq) 7741 cfg->payload_seq = *seq; 7742 cfg->data_interval = nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]); 7743 cfg->wake_len = wake_size; 7744 cfg->wake_data = (u8 *)cfg + sizeof(*cfg) + tokens_size + data_size; 7745 memcpy((void *)cfg->wake_data, 7746 nla_data(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]), 7747 wake_size); 7748 cfg->wake_mask = (u8 *)cfg + sizeof(*cfg) + tokens_size + 7749 data_size + wake_size; 7750 memcpy((void *)cfg->wake_mask, 7751 nla_data(tb[NL80211_WOWLAN_TCP_WAKE_MASK]), 7752 wake_mask_size); 7753 if (tok) { 7754 cfg->tokens_size = tokens_size; 7755 memcpy(&cfg->payload_tok, tok, sizeof(*tok) + tokens_size); 7756 } 7757 7758 trig->tcp = cfg; 7759 7760 return 0; 7761 } 7762 7763 static int nl80211_set_wowlan(struct sk_buff *skb, struct genl_info *info) 7764 { 7765 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 7766 struct nlattr *tb[NUM_NL80211_WOWLAN_TRIG]; 7767 struct cfg80211_wowlan new_triggers = {}; 7768 struct cfg80211_wowlan *ntrig; 7769 struct wiphy_wowlan_support *wowlan = &rdev->wiphy.wowlan; 7770 int err, i; 7771 bool prev_enabled = rdev->wowlan; 7772 7773 if (!rdev->wiphy.wowlan.flags && !rdev->wiphy.wowlan.n_patterns && 7774 !rdev->wiphy.wowlan.tcp) 7775 return -EOPNOTSUPP; 7776 7777 if (!info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]) { 7778 cfg80211_rdev_free_wowlan(rdev); 7779 rdev->wowlan = NULL; 7780 goto set_wakeup; 7781 } 7782 7783 err = nla_parse(tb, MAX_NL80211_WOWLAN_TRIG, 7784 nla_data(info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]), 7785 nla_len(info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]), 7786 nl80211_wowlan_policy); 7787 if (err) 7788 return err; 7789 7790 if (tb[NL80211_WOWLAN_TRIG_ANY]) { 7791 if (!(wowlan->flags & WIPHY_WOWLAN_ANY)) 7792 return -EINVAL; 7793 new_triggers.any = true; 7794 } 7795 7796 if (tb[NL80211_WOWLAN_TRIG_DISCONNECT]) { 7797 if (!(wowlan->flags & WIPHY_WOWLAN_DISCONNECT)) 7798 return -EINVAL; 7799 new_triggers.disconnect = true; 7800 } 7801 7802 if (tb[NL80211_WOWLAN_TRIG_MAGIC_PKT]) { 7803 if (!(wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT)) 7804 return -EINVAL; 7805 new_triggers.magic_pkt = true; 7806 } 7807 7808 if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED]) 7809 return -EINVAL; 7810 7811 if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE]) { 7812 if (!(wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE)) 7813 return -EINVAL; 7814 new_triggers.gtk_rekey_failure = true; 7815 } 7816 7817 if (tb[NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST]) { 7818 if (!(wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ)) 7819 return -EINVAL; 7820 new_triggers.eap_identity_req = true; 7821 } 7822 7823 if (tb[NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE]) { 7824 if (!(wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE)) 7825 return -EINVAL; 7826 new_triggers.four_way_handshake = true; 7827 } 7828 7829 if (tb[NL80211_WOWLAN_TRIG_RFKILL_RELEASE]) { 7830 if (!(wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE)) 7831 return -EINVAL; 7832 new_triggers.rfkill_release = true; 7833 } 7834 7835 if (tb[NL80211_WOWLAN_TRIG_PKT_PATTERN]) { 7836 struct nlattr *pat; 7837 int n_patterns = 0; 7838 int rem, pat_len, mask_len, pkt_offset; 7839 struct nlattr *pat_tb[NUM_NL80211_WOWLAN_PKTPAT]; 7840 7841 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN], 7842 rem) 7843 n_patterns++; 7844 if (n_patterns > wowlan->n_patterns) 7845 return -EINVAL; 7846 7847 new_triggers.patterns = kcalloc(n_patterns, 7848 sizeof(new_triggers.patterns[0]), 7849 GFP_KERNEL); 7850 if (!new_triggers.patterns) 7851 return -ENOMEM; 7852 7853 new_triggers.n_patterns = n_patterns; 7854 i = 0; 7855 7856 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN], 7857 rem) { 7858 nla_parse(pat_tb, MAX_NL80211_WOWLAN_PKTPAT, 7859 nla_data(pat), nla_len(pat), NULL); 7860 err = -EINVAL; 7861 if (!pat_tb[NL80211_WOWLAN_PKTPAT_MASK] || 7862 !pat_tb[NL80211_WOWLAN_PKTPAT_PATTERN]) 7863 goto error; 7864 pat_len = nla_len(pat_tb[NL80211_WOWLAN_PKTPAT_PATTERN]); 7865 mask_len = DIV_ROUND_UP(pat_len, 8); 7866 if (nla_len(pat_tb[NL80211_WOWLAN_PKTPAT_MASK]) != 7867 mask_len) 7868 goto error; 7869 if (pat_len > wowlan->pattern_max_len || 7870 pat_len < wowlan->pattern_min_len) 7871 goto error; 7872 7873 if (!pat_tb[NL80211_WOWLAN_PKTPAT_OFFSET]) 7874 pkt_offset = 0; 7875 else 7876 pkt_offset = nla_get_u32( 7877 pat_tb[NL80211_WOWLAN_PKTPAT_OFFSET]); 7878 if (pkt_offset > wowlan->max_pkt_offset) 7879 goto error; 7880 new_triggers.patterns[i].pkt_offset = pkt_offset; 7881 7882 new_triggers.patterns[i].mask = 7883 kmalloc(mask_len + pat_len, GFP_KERNEL); 7884 if (!new_triggers.patterns[i].mask) { 7885 err = -ENOMEM; 7886 goto error; 7887 } 7888 new_triggers.patterns[i].pattern = 7889 new_triggers.patterns[i].mask + mask_len; 7890 memcpy(new_triggers.patterns[i].mask, 7891 nla_data(pat_tb[NL80211_WOWLAN_PKTPAT_MASK]), 7892 mask_len); 7893 new_triggers.patterns[i].pattern_len = pat_len; 7894 memcpy(new_triggers.patterns[i].pattern, 7895 nla_data(pat_tb[NL80211_WOWLAN_PKTPAT_PATTERN]), 7896 pat_len); 7897 i++; 7898 } 7899 } 7900 7901 if (tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION]) { 7902 err = nl80211_parse_wowlan_tcp( 7903 rdev, tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION], 7904 &new_triggers); 7905 if (err) 7906 goto error; 7907 } 7908 7909 ntrig = kmemdup(&new_triggers, sizeof(new_triggers), GFP_KERNEL); 7910 if (!ntrig) { 7911 err = -ENOMEM; 7912 goto error; 7913 } 7914 cfg80211_rdev_free_wowlan(rdev); 7915 rdev->wowlan = ntrig; 7916 7917 set_wakeup: 7918 if (rdev->ops->set_wakeup && prev_enabled != !!rdev->wowlan) 7919 rdev_set_wakeup(rdev, rdev->wowlan); 7920 7921 return 0; 7922 error: 7923 for (i = 0; i < new_triggers.n_patterns; i++) 7924 kfree(new_triggers.patterns[i].mask); 7925 kfree(new_triggers.patterns); 7926 if (new_triggers.tcp && new_triggers.tcp->sock) 7927 sock_release(new_triggers.tcp->sock); 7928 kfree(new_triggers.tcp); 7929 return err; 7930 } 7931 #endif 7932 7933 static int nl80211_set_rekey_data(struct sk_buff *skb, struct genl_info *info) 7934 { 7935 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 7936 struct net_device *dev = info->user_ptr[1]; 7937 struct wireless_dev *wdev = dev->ieee80211_ptr; 7938 struct nlattr *tb[NUM_NL80211_REKEY_DATA]; 7939 struct cfg80211_gtk_rekey_data rekey_data; 7940 int err; 7941 7942 if (!info->attrs[NL80211_ATTR_REKEY_DATA]) 7943 return -EINVAL; 7944 7945 err = nla_parse(tb, MAX_NL80211_REKEY_DATA, 7946 nla_data(info->attrs[NL80211_ATTR_REKEY_DATA]), 7947 nla_len(info->attrs[NL80211_ATTR_REKEY_DATA]), 7948 nl80211_rekey_policy); 7949 if (err) 7950 return err; 7951 7952 if (nla_len(tb[NL80211_REKEY_DATA_REPLAY_CTR]) != NL80211_REPLAY_CTR_LEN) 7953 return -ERANGE; 7954 if (nla_len(tb[NL80211_REKEY_DATA_KEK]) != NL80211_KEK_LEN) 7955 return -ERANGE; 7956 if (nla_len(tb[NL80211_REKEY_DATA_KCK]) != NL80211_KCK_LEN) 7957 return -ERANGE; 7958 7959 memcpy(rekey_data.kek, nla_data(tb[NL80211_REKEY_DATA_KEK]), 7960 NL80211_KEK_LEN); 7961 memcpy(rekey_data.kck, nla_data(tb[NL80211_REKEY_DATA_KCK]), 7962 NL80211_KCK_LEN); 7963 memcpy(rekey_data.replay_ctr, 7964 nla_data(tb[NL80211_REKEY_DATA_REPLAY_CTR]), 7965 NL80211_REPLAY_CTR_LEN); 7966 7967 wdev_lock(wdev); 7968 if (!wdev->current_bss) { 7969 err = -ENOTCONN; 7970 goto out; 7971 } 7972 7973 if (!rdev->ops->set_rekey_data) { 7974 err = -EOPNOTSUPP; 7975 goto out; 7976 } 7977 7978 err = rdev_set_rekey_data(rdev, dev, &rekey_data); 7979 out: 7980 wdev_unlock(wdev); 7981 return err; 7982 } 7983 7984 static int nl80211_register_unexpected_frame(struct sk_buff *skb, 7985 struct genl_info *info) 7986 { 7987 struct net_device *dev = info->user_ptr[1]; 7988 struct wireless_dev *wdev = dev->ieee80211_ptr; 7989 7990 if (wdev->iftype != NL80211_IFTYPE_AP && 7991 wdev->iftype != NL80211_IFTYPE_P2P_GO) 7992 return -EINVAL; 7993 7994 if (wdev->ap_unexpected_nlportid) 7995 return -EBUSY; 7996 7997 wdev->ap_unexpected_nlportid = info->snd_portid; 7998 return 0; 7999 } 8000 8001 static int nl80211_probe_client(struct sk_buff *skb, 8002 struct genl_info *info) 8003 { 8004 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 8005 struct net_device *dev = info->user_ptr[1]; 8006 struct wireless_dev *wdev = dev->ieee80211_ptr; 8007 struct sk_buff *msg; 8008 void *hdr; 8009 const u8 *addr; 8010 u64 cookie; 8011 int err; 8012 8013 if (wdev->iftype != NL80211_IFTYPE_AP && 8014 wdev->iftype != NL80211_IFTYPE_P2P_GO) 8015 return -EOPNOTSUPP; 8016 8017 if (!info->attrs[NL80211_ATTR_MAC]) 8018 return -EINVAL; 8019 8020 if (!rdev->ops->probe_client) 8021 return -EOPNOTSUPP; 8022 8023 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 8024 if (!msg) 8025 return -ENOMEM; 8026 8027 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0, 8028 NL80211_CMD_PROBE_CLIENT); 8029 8030 if (IS_ERR(hdr)) { 8031 err = PTR_ERR(hdr); 8032 goto free_msg; 8033 } 8034 8035 addr = nla_data(info->attrs[NL80211_ATTR_MAC]); 8036 8037 err = rdev_probe_client(rdev, dev, addr, &cookie); 8038 if (err) 8039 goto free_msg; 8040 8041 if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie)) 8042 goto nla_put_failure; 8043 8044 genlmsg_end(msg, hdr); 8045 8046 return genlmsg_reply(msg, info); 8047 8048 nla_put_failure: 8049 err = -ENOBUFS; 8050 free_msg: 8051 nlmsg_free(msg); 8052 return err; 8053 } 8054 8055 static int nl80211_register_beacons(struct sk_buff *skb, struct genl_info *info) 8056 { 8057 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 8058 struct cfg80211_beacon_registration *reg, *nreg; 8059 int rv; 8060 8061 if (!(rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS)) 8062 return -EOPNOTSUPP; 8063 8064 nreg = kzalloc(sizeof(*nreg), GFP_KERNEL); 8065 if (!nreg) 8066 return -ENOMEM; 8067 8068 /* First, check if already registered. */ 8069 spin_lock_bh(&rdev->beacon_registrations_lock); 8070 list_for_each_entry(reg, &rdev->beacon_registrations, list) { 8071 if (reg->nlportid == info->snd_portid) { 8072 rv = -EALREADY; 8073 goto out_err; 8074 } 8075 } 8076 /* Add it to the list */ 8077 nreg->nlportid = info->snd_portid; 8078 list_add(&nreg->list, &rdev->beacon_registrations); 8079 8080 spin_unlock_bh(&rdev->beacon_registrations_lock); 8081 8082 return 0; 8083 out_err: 8084 spin_unlock_bh(&rdev->beacon_registrations_lock); 8085 kfree(nreg); 8086 return rv; 8087 } 8088 8089 static int nl80211_start_p2p_device(struct sk_buff *skb, struct genl_info *info) 8090 { 8091 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 8092 struct wireless_dev *wdev = info->user_ptr[1]; 8093 int err; 8094 8095 if (!rdev->ops->start_p2p_device) 8096 return -EOPNOTSUPP; 8097 8098 if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE) 8099 return -EOPNOTSUPP; 8100 8101 if (wdev->p2p_started) 8102 return 0; 8103 8104 mutex_lock(&rdev->devlist_mtx); 8105 err = cfg80211_can_add_interface(rdev, wdev->iftype); 8106 mutex_unlock(&rdev->devlist_mtx); 8107 if (err) 8108 return err; 8109 8110 err = rdev_start_p2p_device(rdev, wdev); 8111 if (err) 8112 return err; 8113 8114 wdev->p2p_started = true; 8115 mutex_lock(&rdev->devlist_mtx); 8116 rdev->opencount++; 8117 mutex_unlock(&rdev->devlist_mtx); 8118 8119 return 0; 8120 } 8121 8122 static int nl80211_stop_p2p_device(struct sk_buff *skb, struct genl_info *info) 8123 { 8124 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 8125 struct wireless_dev *wdev = info->user_ptr[1]; 8126 8127 if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE) 8128 return -EOPNOTSUPP; 8129 8130 if (!rdev->ops->stop_p2p_device) 8131 return -EOPNOTSUPP; 8132 8133 if (!wdev->p2p_started) 8134 return 0; 8135 8136 rdev_stop_p2p_device(rdev, wdev); 8137 wdev->p2p_started = false; 8138 8139 mutex_lock(&rdev->devlist_mtx); 8140 rdev->opencount--; 8141 mutex_unlock(&rdev->devlist_mtx); 8142 8143 if (WARN_ON(rdev->scan_req && rdev->scan_req->wdev == wdev)) { 8144 rdev->scan_req->aborted = true; 8145 ___cfg80211_scan_done(rdev, true); 8146 } 8147 8148 return 0; 8149 } 8150 8151 static int nl80211_get_protocol_features(struct sk_buff *skb, 8152 struct genl_info *info) 8153 { 8154 void *hdr; 8155 struct sk_buff *msg; 8156 8157 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 8158 if (!msg) 8159 return -ENOMEM; 8160 8161 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0, 8162 NL80211_CMD_GET_PROTOCOL_FEATURES); 8163 if (!hdr) 8164 goto nla_put_failure; 8165 8166 if (nla_put_u32(msg, NL80211_ATTR_PROTOCOL_FEATURES, 8167 NL80211_PROTOCOL_FEATURE_SPLIT_WIPHY_DUMP)) 8168 goto nla_put_failure; 8169 8170 genlmsg_end(msg, hdr); 8171 return genlmsg_reply(msg, info); 8172 8173 nla_put_failure: 8174 kfree_skb(msg); 8175 return -ENOBUFS; 8176 } 8177 8178 static int nl80211_update_ft_ies(struct sk_buff *skb, struct genl_info *info) 8179 { 8180 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 8181 struct cfg80211_update_ft_ies_params ft_params; 8182 struct net_device *dev = info->user_ptr[1]; 8183 8184 if (!rdev->ops->update_ft_ies) 8185 return -EOPNOTSUPP; 8186 8187 if (!info->attrs[NL80211_ATTR_MDID] || 8188 !is_valid_ie_attr(info->attrs[NL80211_ATTR_IE])) 8189 return -EINVAL; 8190 8191 memset(&ft_params, 0, sizeof(ft_params)); 8192 ft_params.md = nla_get_u16(info->attrs[NL80211_ATTR_MDID]); 8193 ft_params.ie = nla_data(info->attrs[NL80211_ATTR_IE]); 8194 ft_params.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); 8195 8196 return rdev_update_ft_ies(rdev, dev, &ft_params); 8197 } 8198 8199 #define NL80211_FLAG_NEED_WIPHY 0x01 8200 #define NL80211_FLAG_NEED_NETDEV 0x02 8201 #define NL80211_FLAG_NEED_RTNL 0x04 8202 #define NL80211_FLAG_CHECK_NETDEV_UP 0x08 8203 #define NL80211_FLAG_NEED_NETDEV_UP (NL80211_FLAG_NEED_NETDEV |\ 8204 NL80211_FLAG_CHECK_NETDEV_UP) 8205 #define NL80211_FLAG_NEED_WDEV 0x10 8206 /* If a netdev is associated, it must be UP, P2P must be started */ 8207 #define NL80211_FLAG_NEED_WDEV_UP (NL80211_FLAG_NEED_WDEV |\ 8208 NL80211_FLAG_CHECK_NETDEV_UP) 8209 8210 static int nl80211_pre_doit(struct genl_ops *ops, struct sk_buff *skb, 8211 struct genl_info *info) 8212 { 8213 struct cfg80211_registered_device *rdev; 8214 struct wireless_dev *wdev; 8215 struct net_device *dev; 8216 bool rtnl = ops->internal_flags & NL80211_FLAG_NEED_RTNL; 8217 8218 if (rtnl) 8219 rtnl_lock(); 8220 8221 if (ops->internal_flags & NL80211_FLAG_NEED_WIPHY) { 8222 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info); 8223 if (IS_ERR(rdev)) { 8224 if (rtnl) 8225 rtnl_unlock(); 8226 return PTR_ERR(rdev); 8227 } 8228 info->user_ptr[0] = rdev; 8229 } else if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV || 8230 ops->internal_flags & NL80211_FLAG_NEED_WDEV) { 8231 mutex_lock(&cfg80211_mutex); 8232 wdev = __cfg80211_wdev_from_attrs(genl_info_net(info), 8233 info->attrs); 8234 if (IS_ERR(wdev)) { 8235 mutex_unlock(&cfg80211_mutex); 8236 if (rtnl) 8237 rtnl_unlock(); 8238 return PTR_ERR(wdev); 8239 } 8240 8241 dev = wdev->netdev; 8242 rdev = wiphy_to_dev(wdev->wiphy); 8243 8244 if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV) { 8245 if (!dev) { 8246 mutex_unlock(&cfg80211_mutex); 8247 if (rtnl) 8248 rtnl_unlock(); 8249 return -EINVAL; 8250 } 8251 8252 info->user_ptr[1] = dev; 8253 } else { 8254 info->user_ptr[1] = wdev; 8255 } 8256 8257 if (dev) { 8258 if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP && 8259 !netif_running(dev)) { 8260 mutex_unlock(&cfg80211_mutex); 8261 if (rtnl) 8262 rtnl_unlock(); 8263 return -ENETDOWN; 8264 } 8265 8266 dev_hold(dev); 8267 } else if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP) { 8268 if (!wdev->p2p_started) { 8269 mutex_unlock(&cfg80211_mutex); 8270 if (rtnl) 8271 rtnl_unlock(); 8272 return -ENETDOWN; 8273 } 8274 } 8275 8276 cfg80211_lock_rdev(rdev); 8277 8278 mutex_unlock(&cfg80211_mutex); 8279 8280 info->user_ptr[0] = rdev; 8281 } 8282 8283 return 0; 8284 } 8285 8286 static void nl80211_post_doit(struct genl_ops *ops, struct sk_buff *skb, 8287 struct genl_info *info) 8288 { 8289 if (info->user_ptr[0]) 8290 cfg80211_unlock_rdev(info->user_ptr[0]); 8291 if (info->user_ptr[1]) { 8292 if (ops->internal_flags & NL80211_FLAG_NEED_WDEV) { 8293 struct wireless_dev *wdev = info->user_ptr[1]; 8294 8295 if (wdev->netdev) 8296 dev_put(wdev->netdev); 8297 } else { 8298 dev_put(info->user_ptr[1]); 8299 } 8300 } 8301 if (ops->internal_flags & NL80211_FLAG_NEED_RTNL) 8302 rtnl_unlock(); 8303 } 8304 8305 static struct genl_ops nl80211_ops[] = { 8306 { 8307 .cmd = NL80211_CMD_GET_WIPHY, 8308 .doit = nl80211_get_wiphy, 8309 .dumpit = nl80211_dump_wiphy, 8310 .policy = nl80211_policy, 8311 /* can be retrieved by unprivileged users */ 8312 .internal_flags = NL80211_FLAG_NEED_WIPHY, 8313 }, 8314 { 8315 .cmd = NL80211_CMD_SET_WIPHY, 8316 .doit = nl80211_set_wiphy, 8317 .policy = nl80211_policy, 8318 .flags = GENL_ADMIN_PERM, 8319 .internal_flags = NL80211_FLAG_NEED_RTNL, 8320 }, 8321 { 8322 .cmd = NL80211_CMD_GET_INTERFACE, 8323 .doit = nl80211_get_interface, 8324 .dumpit = nl80211_dump_interface, 8325 .policy = nl80211_policy, 8326 /* can be retrieved by unprivileged users */ 8327 .internal_flags = NL80211_FLAG_NEED_WDEV, 8328 }, 8329 { 8330 .cmd = NL80211_CMD_SET_INTERFACE, 8331 .doit = nl80211_set_interface, 8332 .policy = nl80211_policy, 8333 .flags = GENL_ADMIN_PERM, 8334 .internal_flags = NL80211_FLAG_NEED_NETDEV | 8335 NL80211_FLAG_NEED_RTNL, 8336 }, 8337 { 8338 .cmd = NL80211_CMD_NEW_INTERFACE, 8339 .doit = nl80211_new_interface, 8340 .policy = nl80211_policy, 8341 .flags = GENL_ADMIN_PERM, 8342 .internal_flags = NL80211_FLAG_NEED_WIPHY | 8343 NL80211_FLAG_NEED_RTNL, 8344 }, 8345 { 8346 .cmd = NL80211_CMD_DEL_INTERFACE, 8347 .doit = nl80211_del_interface, 8348 .policy = nl80211_policy, 8349 .flags = GENL_ADMIN_PERM, 8350 .internal_flags = NL80211_FLAG_NEED_WDEV | 8351 NL80211_FLAG_NEED_RTNL, 8352 }, 8353 { 8354 .cmd = NL80211_CMD_GET_KEY, 8355 .doit = nl80211_get_key, 8356 .policy = nl80211_policy, 8357 .flags = GENL_ADMIN_PERM, 8358 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 8359 NL80211_FLAG_NEED_RTNL, 8360 }, 8361 { 8362 .cmd = NL80211_CMD_SET_KEY, 8363 .doit = nl80211_set_key, 8364 .policy = nl80211_policy, 8365 .flags = GENL_ADMIN_PERM, 8366 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 8367 NL80211_FLAG_NEED_RTNL, 8368 }, 8369 { 8370 .cmd = NL80211_CMD_NEW_KEY, 8371 .doit = nl80211_new_key, 8372 .policy = nl80211_policy, 8373 .flags = GENL_ADMIN_PERM, 8374 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 8375 NL80211_FLAG_NEED_RTNL, 8376 }, 8377 { 8378 .cmd = NL80211_CMD_DEL_KEY, 8379 .doit = nl80211_del_key, 8380 .policy = nl80211_policy, 8381 .flags = GENL_ADMIN_PERM, 8382 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 8383 NL80211_FLAG_NEED_RTNL, 8384 }, 8385 { 8386 .cmd = NL80211_CMD_SET_BEACON, 8387 .policy = nl80211_policy, 8388 .flags = GENL_ADMIN_PERM, 8389 .doit = nl80211_set_beacon, 8390 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 8391 NL80211_FLAG_NEED_RTNL, 8392 }, 8393 { 8394 .cmd = NL80211_CMD_START_AP, 8395 .policy = nl80211_policy, 8396 .flags = GENL_ADMIN_PERM, 8397 .doit = nl80211_start_ap, 8398 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 8399 NL80211_FLAG_NEED_RTNL, 8400 }, 8401 { 8402 .cmd = NL80211_CMD_STOP_AP, 8403 .policy = nl80211_policy, 8404 .flags = GENL_ADMIN_PERM, 8405 .doit = nl80211_stop_ap, 8406 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 8407 NL80211_FLAG_NEED_RTNL, 8408 }, 8409 { 8410 .cmd = NL80211_CMD_GET_STATION, 8411 .doit = nl80211_get_station, 8412 .dumpit = nl80211_dump_station, 8413 .policy = nl80211_policy, 8414 .internal_flags = NL80211_FLAG_NEED_NETDEV | 8415 NL80211_FLAG_NEED_RTNL, 8416 }, 8417 { 8418 .cmd = NL80211_CMD_SET_STATION, 8419 .doit = nl80211_set_station, 8420 .policy = nl80211_policy, 8421 .flags = GENL_ADMIN_PERM, 8422 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 8423 NL80211_FLAG_NEED_RTNL, 8424 }, 8425 { 8426 .cmd = NL80211_CMD_NEW_STATION, 8427 .doit = nl80211_new_station, 8428 .policy = nl80211_policy, 8429 .flags = GENL_ADMIN_PERM, 8430 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 8431 NL80211_FLAG_NEED_RTNL, 8432 }, 8433 { 8434 .cmd = NL80211_CMD_DEL_STATION, 8435 .doit = nl80211_del_station, 8436 .policy = nl80211_policy, 8437 .flags = GENL_ADMIN_PERM, 8438 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 8439 NL80211_FLAG_NEED_RTNL, 8440 }, 8441 { 8442 .cmd = NL80211_CMD_GET_MPATH, 8443 .doit = nl80211_get_mpath, 8444 .dumpit = nl80211_dump_mpath, 8445 .policy = nl80211_policy, 8446 .flags = GENL_ADMIN_PERM, 8447 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 8448 NL80211_FLAG_NEED_RTNL, 8449 }, 8450 { 8451 .cmd = NL80211_CMD_SET_MPATH, 8452 .doit = nl80211_set_mpath, 8453 .policy = nl80211_policy, 8454 .flags = GENL_ADMIN_PERM, 8455 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 8456 NL80211_FLAG_NEED_RTNL, 8457 }, 8458 { 8459 .cmd = NL80211_CMD_NEW_MPATH, 8460 .doit = nl80211_new_mpath, 8461 .policy = nl80211_policy, 8462 .flags = GENL_ADMIN_PERM, 8463 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 8464 NL80211_FLAG_NEED_RTNL, 8465 }, 8466 { 8467 .cmd = NL80211_CMD_DEL_MPATH, 8468 .doit = nl80211_del_mpath, 8469 .policy = nl80211_policy, 8470 .flags = GENL_ADMIN_PERM, 8471 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 8472 NL80211_FLAG_NEED_RTNL, 8473 }, 8474 { 8475 .cmd = NL80211_CMD_SET_BSS, 8476 .doit = nl80211_set_bss, 8477 .policy = nl80211_policy, 8478 .flags = GENL_ADMIN_PERM, 8479 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 8480 NL80211_FLAG_NEED_RTNL, 8481 }, 8482 { 8483 .cmd = NL80211_CMD_GET_REG, 8484 .doit = nl80211_get_reg, 8485 .policy = nl80211_policy, 8486 /* can be retrieved by unprivileged users */ 8487 }, 8488 { 8489 .cmd = NL80211_CMD_SET_REG, 8490 .doit = nl80211_set_reg, 8491 .policy = nl80211_policy, 8492 .flags = GENL_ADMIN_PERM, 8493 }, 8494 { 8495 .cmd = NL80211_CMD_REQ_SET_REG, 8496 .doit = nl80211_req_set_reg, 8497 .policy = nl80211_policy, 8498 .flags = GENL_ADMIN_PERM, 8499 }, 8500 { 8501 .cmd = NL80211_CMD_GET_MESH_CONFIG, 8502 .doit = nl80211_get_mesh_config, 8503 .policy = nl80211_policy, 8504 /* can be retrieved by unprivileged users */ 8505 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 8506 NL80211_FLAG_NEED_RTNL, 8507 }, 8508 { 8509 .cmd = NL80211_CMD_SET_MESH_CONFIG, 8510 .doit = nl80211_update_mesh_config, 8511 .policy = nl80211_policy, 8512 .flags = GENL_ADMIN_PERM, 8513 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 8514 NL80211_FLAG_NEED_RTNL, 8515 }, 8516 { 8517 .cmd = NL80211_CMD_TRIGGER_SCAN, 8518 .doit = nl80211_trigger_scan, 8519 .policy = nl80211_policy, 8520 .flags = GENL_ADMIN_PERM, 8521 .internal_flags = NL80211_FLAG_NEED_WDEV_UP | 8522 NL80211_FLAG_NEED_RTNL, 8523 }, 8524 { 8525 .cmd = NL80211_CMD_GET_SCAN, 8526 .policy = nl80211_policy, 8527 .dumpit = nl80211_dump_scan, 8528 }, 8529 { 8530 .cmd = NL80211_CMD_START_SCHED_SCAN, 8531 .doit = nl80211_start_sched_scan, 8532 .policy = nl80211_policy, 8533 .flags = GENL_ADMIN_PERM, 8534 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 8535 NL80211_FLAG_NEED_RTNL, 8536 }, 8537 { 8538 .cmd = NL80211_CMD_STOP_SCHED_SCAN, 8539 .doit = nl80211_stop_sched_scan, 8540 .policy = nl80211_policy, 8541 .flags = GENL_ADMIN_PERM, 8542 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 8543 NL80211_FLAG_NEED_RTNL, 8544 }, 8545 { 8546 .cmd = NL80211_CMD_AUTHENTICATE, 8547 .doit = nl80211_authenticate, 8548 .policy = nl80211_policy, 8549 .flags = GENL_ADMIN_PERM, 8550 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 8551 NL80211_FLAG_NEED_RTNL, 8552 }, 8553 { 8554 .cmd = NL80211_CMD_ASSOCIATE, 8555 .doit = nl80211_associate, 8556 .policy = nl80211_policy, 8557 .flags = GENL_ADMIN_PERM, 8558 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 8559 NL80211_FLAG_NEED_RTNL, 8560 }, 8561 { 8562 .cmd = NL80211_CMD_DEAUTHENTICATE, 8563 .doit = nl80211_deauthenticate, 8564 .policy = nl80211_policy, 8565 .flags = GENL_ADMIN_PERM, 8566 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 8567 NL80211_FLAG_NEED_RTNL, 8568 }, 8569 { 8570 .cmd = NL80211_CMD_DISASSOCIATE, 8571 .doit = nl80211_disassociate, 8572 .policy = nl80211_policy, 8573 .flags = GENL_ADMIN_PERM, 8574 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 8575 NL80211_FLAG_NEED_RTNL, 8576 }, 8577 { 8578 .cmd = NL80211_CMD_JOIN_IBSS, 8579 .doit = nl80211_join_ibss, 8580 .policy = nl80211_policy, 8581 .flags = GENL_ADMIN_PERM, 8582 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 8583 NL80211_FLAG_NEED_RTNL, 8584 }, 8585 { 8586 .cmd = NL80211_CMD_LEAVE_IBSS, 8587 .doit = nl80211_leave_ibss, 8588 .policy = nl80211_policy, 8589 .flags = GENL_ADMIN_PERM, 8590 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 8591 NL80211_FLAG_NEED_RTNL, 8592 }, 8593 #ifdef CONFIG_NL80211_TESTMODE 8594 { 8595 .cmd = NL80211_CMD_TESTMODE, 8596 .doit = nl80211_testmode_do, 8597 .dumpit = nl80211_testmode_dump, 8598 .policy = nl80211_policy, 8599 .flags = GENL_ADMIN_PERM, 8600 .internal_flags = NL80211_FLAG_NEED_WIPHY | 8601 NL80211_FLAG_NEED_RTNL, 8602 }, 8603 #endif 8604 { 8605 .cmd = NL80211_CMD_CONNECT, 8606 .doit = nl80211_connect, 8607 .policy = nl80211_policy, 8608 .flags = GENL_ADMIN_PERM, 8609 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 8610 NL80211_FLAG_NEED_RTNL, 8611 }, 8612 { 8613 .cmd = NL80211_CMD_DISCONNECT, 8614 .doit = nl80211_disconnect, 8615 .policy = nl80211_policy, 8616 .flags = GENL_ADMIN_PERM, 8617 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 8618 NL80211_FLAG_NEED_RTNL, 8619 }, 8620 { 8621 .cmd = NL80211_CMD_SET_WIPHY_NETNS, 8622 .doit = nl80211_wiphy_netns, 8623 .policy = nl80211_policy, 8624 .flags = GENL_ADMIN_PERM, 8625 .internal_flags = NL80211_FLAG_NEED_WIPHY | 8626 NL80211_FLAG_NEED_RTNL, 8627 }, 8628 { 8629 .cmd = NL80211_CMD_GET_SURVEY, 8630 .policy = nl80211_policy, 8631 .dumpit = nl80211_dump_survey, 8632 }, 8633 { 8634 .cmd = NL80211_CMD_SET_PMKSA, 8635 .doit = nl80211_setdel_pmksa, 8636 .policy = nl80211_policy, 8637 .flags = GENL_ADMIN_PERM, 8638 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 8639 NL80211_FLAG_NEED_RTNL, 8640 }, 8641 { 8642 .cmd = NL80211_CMD_DEL_PMKSA, 8643 .doit = nl80211_setdel_pmksa, 8644 .policy = nl80211_policy, 8645 .flags = GENL_ADMIN_PERM, 8646 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 8647 NL80211_FLAG_NEED_RTNL, 8648 }, 8649 { 8650 .cmd = NL80211_CMD_FLUSH_PMKSA, 8651 .doit = nl80211_flush_pmksa, 8652 .policy = nl80211_policy, 8653 .flags = GENL_ADMIN_PERM, 8654 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 8655 NL80211_FLAG_NEED_RTNL, 8656 }, 8657 { 8658 .cmd = NL80211_CMD_REMAIN_ON_CHANNEL, 8659 .doit = nl80211_remain_on_channel, 8660 .policy = nl80211_policy, 8661 .flags = GENL_ADMIN_PERM, 8662 .internal_flags = NL80211_FLAG_NEED_WDEV_UP | 8663 NL80211_FLAG_NEED_RTNL, 8664 }, 8665 { 8666 .cmd = NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL, 8667 .doit = nl80211_cancel_remain_on_channel, 8668 .policy = nl80211_policy, 8669 .flags = GENL_ADMIN_PERM, 8670 .internal_flags = NL80211_FLAG_NEED_WDEV_UP | 8671 NL80211_FLAG_NEED_RTNL, 8672 }, 8673 { 8674 .cmd = NL80211_CMD_SET_TX_BITRATE_MASK, 8675 .doit = nl80211_set_tx_bitrate_mask, 8676 .policy = nl80211_policy, 8677 .flags = GENL_ADMIN_PERM, 8678 .internal_flags = NL80211_FLAG_NEED_NETDEV | 8679 NL80211_FLAG_NEED_RTNL, 8680 }, 8681 { 8682 .cmd = NL80211_CMD_REGISTER_FRAME, 8683 .doit = nl80211_register_mgmt, 8684 .policy = nl80211_policy, 8685 .flags = GENL_ADMIN_PERM, 8686 .internal_flags = NL80211_FLAG_NEED_WDEV | 8687 NL80211_FLAG_NEED_RTNL, 8688 }, 8689 { 8690 .cmd = NL80211_CMD_FRAME, 8691 .doit = nl80211_tx_mgmt, 8692 .policy = nl80211_policy, 8693 .flags = GENL_ADMIN_PERM, 8694 .internal_flags = NL80211_FLAG_NEED_WDEV_UP | 8695 NL80211_FLAG_NEED_RTNL, 8696 }, 8697 { 8698 .cmd = NL80211_CMD_FRAME_WAIT_CANCEL, 8699 .doit = nl80211_tx_mgmt_cancel_wait, 8700 .policy = nl80211_policy, 8701 .flags = GENL_ADMIN_PERM, 8702 .internal_flags = NL80211_FLAG_NEED_WDEV_UP | 8703 NL80211_FLAG_NEED_RTNL, 8704 }, 8705 { 8706 .cmd = NL80211_CMD_SET_POWER_SAVE, 8707 .doit = nl80211_set_power_save, 8708 .policy = nl80211_policy, 8709 .flags = GENL_ADMIN_PERM, 8710 .internal_flags = NL80211_FLAG_NEED_NETDEV | 8711 NL80211_FLAG_NEED_RTNL, 8712 }, 8713 { 8714 .cmd = NL80211_CMD_GET_POWER_SAVE, 8715 .doit = nl80211_get_power_save, 8716 .policy = nl80211_policy, 8717 /* can be retrieved by unprivileged users */ 8718 .internal_flags = NL80211_FLAG_NEED_NETDEV | 8719 NL80211_FLAG_NEED_RTNL, 8720 }, 8721 { 8722 .cmd = NL80211_CMD_SET_CQM, 8723 .doit = nl80211_set_cqm, 8724 .policy = nl80211_policy, 8725 .flags = GENL_ADMIN_PERM, 8726 .internal_flags = NL80211_FLAG_NEED_NETDEV | 8727 NL80211_FLAG_NEED_RTNL, 8728 }, 8729 { 8730 .cmd = NL80211_CMD_SET_CHANNEL, 8731 .doit = nl80211_set_channel, 8732 .policy = nl80211_policy, 8733 .flags = GENL_ADMIN_PERM, 8734 .internal_flags = NL80211_FLAG_NEED_NETDEV | 8735 NL80211_FLAG_NEED_RTNL, 8736 }, 8737 { 8738 .cmd = NL80211_CMD_SET_WDS_PEER, 8739 .doit = nl80211_set_wds_peer, 8740 .policy = nl80211_policy, 8741 .flags = GENL_ADMIN_PERM, 8742 .internal_flags = NL80211_FLAG_NEED_NETDEV | 8743 NL80211_FLAG_NEED_RTNL, 8744 }, 8745 { 8746 .cmd = NL80211_CMD_JOIN_MESH, 8747 .doit = nl80211_join_mesh, 8748 .policy = nl80211_policy, 8749 .flags = GENL_ADMIN_PERM, 8750 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 8751 NL80211_FLAG_NEED_RTNL, 8752 }, 8753 { 8754 .cmd = NL80211_CMD_LEAVE_MESH, 8755 .doit = nl80211_leave_mesh, 8756 .policy = nl80211_policy, 8757 .flags = GENL_ADMIN_PERM, 8758 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 8759 NL80211_FLAG_NEED_RTNL, 8760 }, 8761 #ifdef CONFIG_PM 8762 { 8763 .cmd = NL80211_CMD_GET_WOWLAN, 8764 .doit = nl80211_get_wowlan, 8765 .policy = nl80211_policy, 8766 /* can be retrieved by unprivileged users */ 8767 .internal_flags = NL80211_FLAG_NEED_WIPHY | 8768 NL80211_FLAG_NEED_RTNL, 8769 }, 8770 { 8771 .cmd = NL80211_CMD_SET_WOWLAN, 8772 .doit = nl80211_set_wowlan, 8773 .policy = nl80211_policy, 8774 .flags = GENL_ADMIN_PERM, 8775 .internal_flags = NL80211_FLAG_NEED_WIPHY | 8776 NL80211_FLAG_NEED_RTNL, 8777 }, 8778 #endif 8779 { 8780 .cmd = NL80211_CMD_SET_REKEY_OFFLOAD, 8781 .doit = nl80211_set_rekey_data, 8782 .policy = nl80211_policy, 8783 .flags = GENL_ADMIN_PERM, 8784 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 8785 NL80211_FLAG_NEED_RTNL, 8786 }, 8787 { 8788 .cmd = NL80211_CMD_TDLS_MGMT, 8789 .doit = nl80211_tdls_mgmt, 8790 .policy = nl80211_policy, 8791 .flags = GENL_ADMIN_PERM, 8792 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 8793 NL80211_FLAG_NEED_RTNL, 8794 }, 8795 { 8796 .cmd = NL80211_CMD_TDLS_OPER, 8797 .doit = nl80211_tdls_oper, 8798 .policy = nl80211_policy, 8799 .flags = GENL_ADMIN_PERM, 8800 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 8801 NL80211_FLAG_NEED_RTNL, 8802 }, 8803 { 8804 .cmd = NL80211_CMD_UNEXPECTED_FRAME, 8805 .doit = nl80211_register_unexpected_frame, 8806 .policy = nl80211_policy, 8807 .flags = GENL_ADMIN_PERM, 8808 .internal_flags = NL80211_FLAG_NEED_NETDEV | 8809 NL80211_FLAG_NEED_RTNL, 8810 }, 8811 { 8812 .cmd = NL80211_CMD_PROBE_CLIENT, 8813 .doit = nl80211_probe_client, 8814 .policy = nl80211_policy, 8815 .flags = GENL_ADMIN_PERM, 8816 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 8817 NL80211_FLAG_NEED_RTNL, 8818 }, 8819 { 8820 .cmd = NL80211_CMD_REGISTER_BEACONS, 8821 .doit = nl80211_register_beacons, 8822 .policy = nl80211_policy, 8823 .flags = GENL_ADMIN_PERM, 8824 .internal_flags = NL80211_FLAG_NEED_WIPHY | 8825 NL80211_FLAG_NEED_RTNL, 8826 }, 8827 { 8828 .cmd = NL80211_CMD_SET_NOACK_MAP, 8829 .doit = nl80211_set_noack_map, 8830 .policy = nl80211_policy, 8831 .flags = GENL_ADMIN_PERM, 8832 .internal_flags = NL80211_FLAG_NEED_NETDEV | 8833 NL80211_FLAG_NEED_RTNL, 8834 }, 8835 { 8836 .cmd = NL80211_CMD_START_P2P_DEVICE, 8837 .doit = nl80211_start_p2p_device, 8838 .policy = nl80211_policy, 8839 .flags = GENL_ADMIN_PERM, 8840 .internal_flags = NL80211_FLAG_NEED_WDEV | 8841 NL80211_FLAG_NEED_RTNL, 8842 }, 8843 { 8844 .cmd = NL80211_CMD_STOP_P2P_DEVICE, 8845 .doit = nl80211_stop_p2p_device, 8846 .policy = nl80211_policy, 8847 .flags = GENL_ADMIN_PERM, 8848 .internal_flags = NL80211_FLAG_NEED_WDEV_UP | 8849 NL80211_FLAG_NEED_RTNL, 8850 }, 8851 { 8852 .cmd = NL80211_CMD_SET_MCAST_RATE, 8853 .doit = nl80211_set_mcast_rate, 8854 .policy = nl80211_policy, 8855 .flags = GENL_ADMIN_PERM, 8856 .internal_flags = NL80211_FLAG_NEED_NETDEV | 8857 NL80211_FLAG_NEED_RTNL, 8858 }, 8859 { 8860 .cmd = NL80211_CMD_SET_MAC_ACL, 8861 .doit = nl80211_set_mac_acl, 8862 .policy = nl80211_policy, 8863 .flags = GENL_ADMIN_PERM, 8864 .internal_flags = NL80211_FLAG_NEED_NETDEV | 8865 NL80211_FLAG_NEED_RTNL, 8866 }, 8867 { 8868 .cmd = NL80211_CMD_RADAR_DETECT, 8869 .doit = nl80211_start_radar_detection, 8870 .policy = nl80211_policy, 8871 .flags = GENL_ADMIN_PERM, 8872 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 8873 NL80211_FLAG_NEED_RTNL, 8874 }, 8875 { 8876 .cmd = NL80211_CMD_GET_PROTOCOL_FEATURES, 8877 .doit = nl80211_get_protocol_features, 8878 .policy = nl80211_policy, 8879 }, 8880 { 8881 .cmd = NL80211_CMD_UPDATE_FT_IES, 8882 .doit = nl80211_update_ft_ies, 8883 .policy = nl80211_policy, 8884 .flags = GENL_ADMIN_PERM, 8885 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 8886 NL80211_FLAG_NEED_RTNL, 8887 }, 8888 }; 8889 8890 static struct genl_multicast_group nl80211_mlme_mcgrp = { 8891 .name = "mlme", 8892 }; 8893 8894 /* multicast groups */ 8895 static struct genl_multicast_group nl80211_config_mcgrp = { 8896 .name = "config", 8897 }; 8898 static struct genl_multicast_group nl80211_scan_mcgrp = { 8899 .name = "scan", 8900 }; 8901 static struct genl_multicast_group nl80211_regulatory_mcgrp = { 8902 .name = "regulatory", 8903 }; 8904 8905 /* notification functions */ 8906 8907 void nl80211_notify_dev_rename(struct cfg80211_registered_device *rdev) 8908 { 8909 struct sk_buff *msg; 8910 8911 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 8912 if (!msg) 8913 return; 8914 8915 if (nl80211_send_wiphy(rdev, msg, 0, 0, 0, 8916 false, NULL, NULL, NULL) < 0) { 8917 nlmsg_free(msg); 8918 return; 8919 } 8920 8921 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0, 8922 nl80211_config_mcgrp.id, GFP_KERNEL); 8923 } 8924 8925 static int nl80211_add_scan_req(struct sk_buff *msg, 8926 struct cfg80211_registered_device *rdev) 8927 { 8928 struct cfg80211_scan_request *req = rdev->scan_req; 8929 struct nlattr *nest; 8930 int i; 8931 8932 ASSERT_RDEV_LOCK(rdev); 8933 8934 if (WARN_ON(!req)) 8935 return 0; 8936 8937 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_SSIDS); 8938 if (!nest) 8939 goto nla_put_failure; 8940 for (i = 0; i < req->n_ssids; i++) { 8941 if (nla_put(msg, i, req->ssids[i].ssid_len, req->ssids[i].ssid)) 8942 goto nla_put_failure; 8943 } 8944 nla_nest_end(msg, nest); 8945 8946 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES); 8947 if (!nest) 8948 goto nla_put_failure; 8949 for (i = 0; i < req->n_channels; i++) { 8950 if (nla_put_u32(msg, i, req->channels[i]->center_freq)) 8951 goto nla_put_failure; 8952 } 8953 nla_nest_end(msg, nest); 8954 8955 if (req->ie && 8956 nla_put(msg, NL80211_ATTR_IE, req->ie_len, req->ie)) 8957 goto nla_put_failure; 8958 8959 if (req->flags) 8960 nla_put_u32(msg, NL80211_ATTR_SCAN_FLAGS, req->flags); 8961 8962 return 0; 8963 nla_put_failure: 8964 return -ENOBUFS; 8965 } 8966 8967 static int nl80211_send_scan_msg(struct sk_buff *msg, 8968 struct cfg80211_registered_device *rdev, 8969 struct wireless_dev *wdev, 8970 u32 portid, u32 seq, int flags, 8971 u32 cmd) 8972 { 8973 void *hdr; 8974 8975 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd); 8976 if (!hdr) 8977 return -1; 8978 8979 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 8980 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX, 8981 wdev->netdev->ifindex)) || 8982 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev))) 8983 goto nla_put_failure; 8984 8985 /* ignore errors and send incomplete event anyway */ 8986 nl80211_add_scan_req(msg, rdev); 8987 8988 return genlmsg_end(msg, hdr); 8989 8990 nla_put_failure: 8991 genlmsg_cancel(msg, hdr); 8992 return -EMSGSIZE; 8993 } 8994 8995 static int 8996 nl80211_send_sched_scan_msg(struct sk_buff *msg, 8997 struct cfg80211_registered_device *rdev, 8998 struct net_device *netdev, 8999 u32 portid, u32 seq, int flags, u32 cmd) 9000 { 9001 void *hdr; 9002 9003 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd); 9004 if (!hdr) 9005 return -1; 9006 9007 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 9008 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex)) 9009 goto nla_put_failure; 9010 9011 return genlmsg_end(msg, hdr); 9012 9013 nla_put_failure: 9014 genlmsg_cancel(msg, hdr); 9015 return -EMSGSIZE; 9016 } 9017 9018 void nl80211_send_scan_start(struct cfg80211_registered_device *rdev, 9019 struct wireless_dev *wdev) 9020 { 9021 struct sk_buff *msg; 9022 9023 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 9024 if (!msg) 9025 return; 9026 9027 if (nl80211_send_scan_msg(msg, rdev, wdev, 0, 0, 0, 9028 NL80211_CMD_TRIGGER_SCAN) < 0) { 9029 nlmsg_free(msg); 9030 return; 9031 } 9032 9033 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0, 9034 nl80211_scan_mcgrp.id, GFP_KERNEL); 9035 } 9036 9037 void nl80211_send_scan_done(struct cfg80211_registered_device *rdev, 9038 struct wireless_dev *wdev) 9039 { 9040 struct sk_buff *msg; 9041 9042 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 9043 if (!msg) 9044 return; 9045 9046 if (nl80211_send_scan_msg(msg, rdev, wdev, 0, 0, 0, 9047 NL80211_CMD_NEW_SCAN_RESULTS) < 0) { 9048 nlmsg_free(msg); 9049 return; 9050 } 9051 9052 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0, 9053 nl80211_scan_mcgrp.id, GFP_KERNEL); 9054 } 9055 9056 void nl80211_send_scan_aborted(struct cfg80211_registered_device *rdev, 9057 struct wireless_dev *wdev) 9058 { 9059 struct sk_buff *msg; 9060 9061 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 9062 if (!msg) 9063 return; 9064 9065 if (nl80211_send_scan_msg(msg, rdev, wdev, 0, 0, 0, 9066 NL80211_CMD_SCAN_ABORTED) < 0) { 9067 nlmsg_free(msg); 9068 return; 9069 } 9070 9071 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0, 9072 nl80211_scan_mcgrp.id, GFP_KERNEL); 9073 } 9074 9075 void nl80211_send_sched_scan_results(struct cfg80211_registered_device *rdev, 9076 struct net_device *netdev) 9077 { 9078 struct sk_buff *msg; 9079 9080 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 9081 if (!msg) 9082 return; 9083 9084 if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0, 9085 NL80211_CMD_SCHED_SCAN_RESULTS) < 0) { 9086 nlmsg_free(msg); 9087 return; 9088 } 9089 9090 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0, 9091 nl80211_scan_mcgrp.id, GFP_KERNEL); 9092 } 9093 9094 void nl80211_send_sched_scan(struct cfg80211_registered_device *rdev, 9095 struct net_device *netdev, u32 cmd) 9096 { 9097 struct sk_buff *msg; 9098 9099 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 9100 if (!msg) 9101 return; 9102 9103 if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0, cmd) < 0) { 9104 nlmsg_free(msg); 9105 return; 9106 } 9107 9108 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0, 9109 nl80211_scan_mcgrp.id, GFP_KERNEL); 9110 } 9111 9112 /* 9113 * This can happen on global regulatory changes or device specific settings 9114 * based on custom world regulatory domains. 9115 */ 9116 void nl80211_send_reg_change_event(struct regulatory_request *request) 9117 { 9118 struct sk_buff *msg; 9119 void *hdr; 9120 9121 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 9122 if (!msg) 9123 return; 9124 9125 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_CHANGE); 9126 if (!hdr) { 9127 nlmsg_free(msg); 9128 return; 9129 } 9130 9131 /* Userspace can always count this one always being set */ 9132 if (nla_put_u8(msg, NL80211_ATTR_REG_INITIATOR, request->initiator)) 9133 goto nla_put_failure; 9134 9135 if (request->alpha2[0] == '0' && request->alpha2[1] == '0') { 9136 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE, 9137 NL80211_REGDOM_TYPE_WORLD)) 9138 goto nla_put_failure; 9139 } else if (request->alpha2[0] == '9' && request->alpha2[1] == '9') { 9140 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE, 9141 NL80211_REGDOM_TYPE_CUSTOM_WORLD)) 9142 goto nla_put_failure; 9143 } else if ((request->alpha2[0] == '9' && request->alpha2[1] == '8') || 9144 request->intersect) { 9145 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE, 9146 NL80211_REGDOM_TYPE_INTERSECTION)) 9147 goto nla_put_failure; 9148 } else { 9149 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE, 9150 NL80211_REGDOM_TYPE_COUNTRY) || 9151 nla_put_string(msg, NL80211_ATTR_REG_ALPHA2, 9152 request->alpha2)) 9153 goto nla_put_failure; 9154 } 9155 9156 if (request->wiphy_idx != WIPHY_IDX_INVALID && 9157 nla_put_u32(msg, NL80211_ATTR_WIPHY, request->wiphy_idx)) 9158 goto nla_put_failure; 9159 9160 genlmsg_end(msg, hdr); 9161 9162 rcu_read_lock(); 9163 genlmsg_multicast_allns(msg, 0, nl80211_regulatory_mcgrp.id, 9164 GFP_ATOMIC); 9165 rcu_read_unlock(); 9166 9167 return; 9168 9169 nla_put_failure: 9170 genlmsg_cancel(msg, hdr); 9171 nlmsg_free(msg); 9172 } 9173 9174 static void nl80211_send_mlme_event(struct cfg80211_registered_device *rdev, 9175 struct net_device *netdev, 9176 const u8 *buf, size_t len, 9177 enum nl80211_commands cmd, gfp_t gfp) 9178 { 9179 struct sk_buff *msg; 9180 void *hdr; 9181 9182 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 9183 if (!msg) 9184 return; 9185 9186 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd); 9187 if (!hdr) { 9188 nlmsg_free(msg); 9189 return; 9190 } 9191 9192 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 9193 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) || 9194 nla_put(msg, NL80211_ATTR_FRAME, len, buf)) 9195 goto nla_put_failure; 9196 9197 genlmsg_end(msg, hdr); 9198 9199 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0, 9200 nl80211_mlme_mcgrp.id, gfp); 9201 return; 9202 9203 nla_put_failure: 9204 genlmsg_cancel(msg, hdr); 9205 nlmsg_free(msg); 9206 } 9207 9208 void nl80211_send_rx_auth(struct cfg80211_registered_device *rdev, 9209 struct net_device *netdev, const u8 *buf, 9210 size_t len, gfp_t gfp) 9211 { 9212 nl80211_send_mlme_event(rdev, netdev, buf, len, 9213 NL80211_CMD_AUTHENTICATE, gfp); 9214 } 9215 9216 void nl80211_send_rx_assoc(struct cfg80211_registered_device *rdev, 9217 struct net_device *netdev, const u8 *buf, 9218 size_t len, gfp_t gfp) 9219 { 9220 nl80211_send_mlme_event(rdev, netdev, buf, len, 9221 NL80211_CMD_ASSOCIATE, gfp); 9222 } 9223 9224 void nl80211_send_deauth(struct cfg80211_registered_device *rdev, 9225 struct net_device *netdev, const u8 *buf, 9226 size_t len, gfp_t gfp) 9227 { 9228 nl80211_send_mlme_event(rdev, netdev, buf, len, 9229 NL80211_CMD_DEAUTHENTICATE, gfp); 9230 } 9231 9232 void nl80211_send_disassoc(struct cfg80211_registered_device *rdev, 9233 struct net_device *netdev, const u8 *buf, 9234 size_t len, gfp_t gfp) 9235 { 9236 nl80211_send_mlme_event(rdev, netdev, buf, len, 9237 NL80211_CMD_DISASSOCIATE, gfp); 9238 } 9239 9240 void cfg80211_send_unprot_deauth(struct net_device *dev, const u8 *buf, 9241 size_t len) 9242 { 9243 struct wireless_dev *wdev = dev->ieee80211_ptr; 9244 struct wiphy *wiphy = wdev->wiphy; 9245 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); 9246 9247 trace_cfg80211_send_unprot_deauth(dev); 9248 nl80211_send_mlme_event(rdev, dev, buf, len, 9249 NL80211_CMD_UNPROT_DEAUTHENTICATE, GFP_ATOMIC); 9250 } 9251 EXPORT_SYMBOL(cfg80211_send_unprot_deauth); 9252 9253 void cfg80211_send_unprot_disassoc(struct net_device *dev, const u8 *buf, 9254 size_t len) 9255 { 9256 struct wireless_dev *wdev = dev->ieee80211_ptr; 9257 struct wiphy *wiphy = wdev->wiphy; 9258 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); 9259 9260 trace_cfg80211_send_unprot_disassoc(dev); 9261 nl80211_send_mlme_event(rdev, dev, buf, len, 9262 NL80211_CMD_UNPROT_DISASSOCIATE, GFP_ATOMIC); 9263 } 9264 EXPORT_SYMBOL(cfg80211_send_unprot_disassoc); 9265 9266 static void nl80211_send_mlme_timeout(struct cfg80211_registered_device *rdev, 9267 struct net_device *netdev, int cmd, 9268 const u8 *addr, gfp_t gfp) 9269 { 9270 struct sk_buff *msg; 9271 void *hdr; 9272 9273 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 9274 if (!msg) 9275 return; 9276 9277 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd); 9278 if (!hdr) { 9279 nlmsg_free(msg); 9280 return; 9281 } 9282 9283 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 9284 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) || 9285 nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) || 9286 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) 9287 goto nla_put_failure; 9288 9289 genlmsg_end(msg, hdr); 9290 9291 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0, 9292 nl80211_mlme_mcgrp.id, gfp); 9293 return; 9294 9295 nla_put_failure: 9296 genlmsg_cancel(msg, hdr); 9297 nlmsg_free(msg); 9298 } 9299 9300 void nl80211_send_auth_timeout(struct cfg80211_registered_device *rdev, 9301 struct net_device *netdev, const u8 *addr, 9302 gfp_t gfp) 9303 { 9304 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_AUTHENTICATE, 9305 addr, gfp); 9306 } 9307 9308 void nl80211_send_assoc_timeout(struct cfg80211_registered_device *rdev, 9309 struct net_device *netdev, const u8 *addr, 9310 gfp_t gfp) 9311 { 9312 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_ASSOCIATE, 9313 addr, gfp); 9314 } 9315 9316 void nl80211_send_connect_result(struct cfg80211_registered_device *rdev, 9317 struct net_device *netdev, const u8 *bssid, 9318 const u8 *req_ie, size_t req_ie_len, 9319 const u8 *resp_ie, size_t resp_ie_len, 9320 u16 status, gfp_t gfp) 9321 { 9322 struct sk_buff *msg; 9323 void *hdr; 9324 9325 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 9326 if (!msg) 9327 return; 9328 9329 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONNECT); 9330 if (!hdr) { 9331 nlmsg_free(msg); 9332 return; 9333 } 9334 9335 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 9336 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) || 9337 (bssid && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid)) || 9338 nla_put_u16(msg, NL80211_ATTR_STATUS_CODE, status) || 9339 (req_ie && 9340 nla_put(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie)) || 9341 (resp_ie && 9342 nla_put(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie))) 9343 goto nla_put_failure; 9344 9345 genlmsg_end(msg, hdr); 9346 9347 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0, 9348 nl80211_mlme_mcgrp.id, gfp); 9349 return; 9350 9351 nla_put_failure: 9352 genlmsg_cancel(msg, hdr); 9353 nlmsg_free(msg); 9354 9355 } 9356 9357 void nl80211_send_roamed(struct cfg80211_registered_device *rdev, 9358 struct net_device *netdev, const u8 *bssid, 9359 const u8 *req_ie, size_t req_ie_len, 9360 const u8 *resp_ie, size_t resp_ie_len, gfp_t gfp) 9361 { 9362 struct sk_buff *msg; 9363 void *hdr; 9364 9365 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 9366 if (!msg) 9367 return; 9368 9369 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ROAM); 9370 if (!hdr) { 9371 nlmsg_free(msg); 9372 return; 9373 } 9374 9375 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 9376 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) || 9377 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid) || 9378 (req_ie && 9379 nla_put(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie)) || 9380 (resp_ie && 9381 nla_put(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie))) 9382 goto nla_put_failure; 9383 9384 genlmsg_end(msg, hdr); 9385 9386 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0, 9387 nl80211_mlme_mcgrp.id, gfp); 9388 return; 9389 9390 nla_put_failure: 9391 genlmsg_cancel(msg, hdr); 9392 nlmsg_free(msg); 9393 9394 } 9395 9396 void nl80211_send_disconnected(struct cfg80211_registered_device *rdev, 9397 struct net_device *netdev, u16 reason, 9398 const u8 *ie, size_t ie_len, bool from_ap) 9399 { 9400 struct sk_buff *msg; 9401 void *hdr; 9402 9403 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 9404 if (!msg) 9405 return; 9406 9407 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DISCONNECT); 9408 if (!hdr) { 9409 nlmsg_free(msg); 9410 return; 9411 } 9412 9413 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 9414 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) || 9415 (from_ap && reason && 9416 nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason)) || 9417 (from_ap && 9418 nla_put_flag(msg, NL80211_ATTR_DISCONNECTED_BY_AP)) || 9419 (ie && nla_put(msg, NL80211_ATTR_IE, ie_len, ie))) 9420 goto nla_put_failure; 9421 9422 genlmsg_end(msg, hdr); 9423 9424 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0, 9425 nl80211_mlme_mcgrp.id, GFP_KERNEL); 9426 return; 9427 9428 nla_put_failure: 9429 genlmsg_cancel(msg, hdr); 9430 nlmsg_free(msg); 9431 9432 } 9433 9434 void nl80211_send_ibss_bssid(struct cfg80211_registered_device *rdev, 9435 struct net_device *netdev, const u8 *bssid, 9436 gfp_t gfp) 9437 { 9438 struct sk_buff *msg; 9439 void *hdr; 9440 9441 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 9442 if (!msg) 9443 return; 9444 9445 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_JOIN_IBSS); 9446 if (!hdr) { 9447 nlmsg_free(msg); 9448 return; 9449 } 9450 9451 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 9452 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) || 9453 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid)) 9454 goto nla_put_failure; 9455 9456 genlmsg_end(msg, hdr); 9457 9458 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0, 9459 nl80211_mlme_mcgrp.id, gfp); 9460 return; 9461 9462 nla_put_failure: 9463 genlmsg_cancel(msg, hdr); 9464 nlmsg_free(msg); 9465 } 9466 9467 void cfg80211_notify_new_peer_candidate(struct net_device *dev, const u8 *addr, 9468 const u8* ie, u8 ie_len, gfp_t gfp) 9469 { 9470 struct wireless_dev *wdev = dev->ieee80211_ptr; 9471 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy); 9472 struct sk_buff *msg; 9473 void *hdr; 9474 9475 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_MESH_POINT)) 9476 return; 9477 9478 trace_cfg80211_notify_new_peer_candidate(dev, addr); 9479 9480 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 9481 if (!msg) 9482 return; 9483 9484 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NEW_PEER_CANDIDATE); 9485 if (!hdr) { 9486 nlmsg_free(msg); 9487 return; 9488 } 9489 9490 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 9491 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) || 9492 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) || 9493 (ie_len && ie && 9494 nla_put(msg, NL80211_ATTR_IE, ie_len , ie))) 9495 goto nla_put_failure; 9496 9497 genlmsg_end(msg, hdr); 9498 9499 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0, 9500 nl80211_mlme_mcgrp.id, gfp); 9501 return; 9502 9503 nla_put_failure: 9504 genlmsg_cancel(msg, hdr); 9505 nlmsg_free(msg); 9506 } 9507 EXPORT_SYMBOL(cfg80211_notify_new_peer_candidate); 9508 9509 void nl80211_michael_mic_failure(struct cfg80211_registered_device *rdev, 9510 struct net_device *netdev, const u8 *addr, 9511 enum nl80211_key_type key_type, int key_id, 9512 const u8 *tsc, gfp_t gfp) 9513 { 9514 struct sk_buff *msg; 9515 void *hdr; 9516 9517 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 9518 if (!msg) 9519 return; 9520 9521 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_MICHAEL_MIC_FAILURE); 9522 if (!hdr) { 9523 nlmsg_free(msg); 9524 return; 9525 } 9526 9527 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 9528 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) || 9529 (addr && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) || 9530 nla_put_u32(msg, NL80211_ATTR_KEY_TYPE, key_type) || 9531 (key_id != -1 && 9532 nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_id)) || 9533 (tsc && nla_put(msg, NL80211_ATTR_KEY_SEQ, 6, tsc))) 9534 goto nla_put_failure; 9535 9536 genlmsg_end(msg, hdr); 9537 9538 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0, 9539 nl80211_mlme_mcgrp.id, gfp); 9540 return; 9541 9542 nla_put_failure: 9543 genlmsg_cancel(msg, hdr); 9544 nlmsg_free(msg); 9545 } 9546 9547 void nl80211_send_beacon_hint_event(struct wiphy *wiphy, 9548 struct ieee80211_channel *channel_before, 9549 struct ieee80211_channel *channel_after) 9550 { 9551 struct sk_buff *msg; 9552 void *hdr; 9553 struct nlattr *nl_freq; 9554 9555 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC); 9556 if (!msg) 9557 return; 9558 9559 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_BEACON_HINT); 9560 if (!hdr) { 9561 nlmsg_free(msg); 9562 return; 9563 } 9564 9565 /* 9566 * Since we are applying the beacon hint to a wiphy we know its 9567 * wiphy_idx is valid 9568 */ 9569 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy))) 9570 goto nla_put_failure; 9571 9572 /* Before */ 9573 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_BEFORE); 9574 if (!nl_freq) 9575 goto nla_put_failure; 9576 if (nl80211_msg_put_channel(msg, channel_before, false)) 9577 goto nla_put_failure; 9578 nla_nest_end(msg, nl_freq); 9579 9580 /* After */ 9581 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_AFTER); 9582 if (!nl_freq) 9583 goto nla_put_failure; 9584 if (nl80211_msg_put_channel(msg, channel_after, false)) 9585 goto nla_put_failure; 9586 nla_nest_end(msg, nl_freq); 9587 9588 genlmsg_end(msg, hdr); 9589 9590 rcu_read_lock(); 9591 genlmsg_multicast_allns(msg, 0, nl80211_regulatory_mcgrp.id, 9592 GFP_ATOMIC); 9593 rcu_read_unlock(); 9594 9595 return; 9596 9597 nla_put_failure: 9598 genlmsg_cancel(msg, hdr); 9599 nlmsg_free(msg); 9600 } 9601 9602 static void nl80211_send_remain_on_chan_event( 9603 int cmd, struct cfg80211_registered_device *rdev, 9604 struct wireless_dev *wdev, u64 cookie, 9605 struct ieee80211_channel *chan, 9606 unsigned int duration, gfp_t gfp) 9607 { 9608 struct sk_buff *msg; 9609 void *hdr; 9610 9611 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 9612 if (!msg) 9613 return; 9614 9615 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd); 9616 if (!hdr) { 9617 nlmsg_free(msg); 9618 return; 9619 } 9620 9621 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 9622 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX, 9623 wdev->netdev->ifindex)) || 9624 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) || 9625 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, chan->center_freq) || 9626 nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE, 9627 NL80211_CHAN_NO_HT) || 9628 nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie)) 9629 goto nla_put_failure; 9630 9631 if (cmd == NL80211_CMD_REMAIN_ON_CHANNEL && 9632 nla_put_u32(msg, NL80211_ATTR_DURATION, duration)) 9633 goto nla_put_failure; 9634 9635 genlmsg_end(msg, hdr); 9636 9637 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0, 9638 nl80211_mlme_mcgrp.id, gfp); 9639 return; 9640 9641 nla_put_failure: 9642 genlmsg_cancel(msg, hdr); 9643 nlmsg_free(msg); 9644 } 9645 9646 void cfg80211_ready_on_channel(struct wireless_dev *wdev, u64 cookie, 9647 struct ieee80211_channel *chan, 9648 unsigned int duration, gfp_t gfp) 9649 { 9650 struct wiphy *wiphy = wdev->wiphy; 9651 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); 9652 9653 trace_cfg80211_ready_on_channel(wdev, cookie, chan, duration); 9654 nl80211_send_remain_on_chan_event(NL80211_CMD_REMAIN_ON_CHANNEL, 9655 rdev, wdev, cookie, chan, 9656 duration, gfp); 9657 } 9658 EXPORT_SYMBOL(cfg80211_ready_on_channel); 9659 9660 void cfg80211_remain_on_channel_expired(struct wireless_dev *wdev, u64 cookie, 9661 struct ieee80211_channel *chan, 9662 gfp_t gfp) 9663 { 9664 struct wiphy *wiphy = wdev->wiphy; 9665 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); 9666 9667 trace_cfg80211_ready_on_channel_expired(wdev, cookie, chan); 9668 nl80211_send_remain_on_chan_event(NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL, 9669 rdev, wdev, cookie, chan, 0, gfp); 9670 } 9671 EXPORT_SYMBOL(cfg80211_remain_on_channel_expired); 9672 9673 void cfg80211_new_sta(struct net_device *dev, const u8 *mac_addr, 9674 struct station_info *sinfo, gfp_t gfp) 9675 { 9676 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy; 9677 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); 9678 struct sk_buff *msg; 9679 9680 trace_cfg80211_new_sta(dev, mac_addr, sinfo); 9681 9682 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 9683 if (!msg) 9684 return; 9685 9686 if (nl80211_send_station(msg, 0, 0, 0, 9687 rdev, dev, mac_addr, sinfo) < 0) { 9688 nlmsg_free(msg); 9689 return; 9690 } 9691 9692 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0, 9693 nl80211_mlme_mcgrp.id, gfp); 9694 } 9695 EXPORT_SYMBOL(cfg80211_new_sta); 9696 9697 void cfg80211_del_sta(struct net_device *dev, const u8 *mac_addr, gfp_t gfp) 9698 { 9699 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy; 9700 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); 9701 struct sk_buff *msg; 9702 void *hdr; 9703 9704 trace_cfg80211_del_sta(dev, mac_addr); 9705 9706 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 9707 if (!msg) 9708 return; 9709 9710 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DEL_STATION); 9711 if (!hdr) { 9712 nlmsg_free(msg); 9713 return; 9714 } 9715 9716 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) || 9717 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr)) 9718 goto nla_put_failure; 9719 9720 genlmsg_end(msg, hdr); 9721 9722 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0, 9723 nl80211_mlme_mcgrp.id, gfp); 9724 return; 9725 9726 nla_put_failure: 9727 genlmsg_cancel(msg, hdr); 9728 nlmsg_free(msg); 9729 } 9730 EXPORT_SYMBOL(cfg80211_del_sta); 9731 9732 void cfg80211_conn_failed(struct net_device *dev, const u8 *mac_addr, 9733 enum nl80211_connect_failed_reason reason, 9734 gfp_t gfp) 9735 { 9736 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy; 9737 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); 9738 struct sk_buff *msg; 9739 void *hdr; 9740 9741 msg = nlmsg_new(NLMSG_GOODSIZE, gfp); 9742 if (!msg) 9743 return; 9744 9745 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONN_FAILED); 9746 if (!hdr) { 9747 nlmsg_free(msg); 9748 return; 9749 } 9750 9751 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) || 9752 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) || 9753 nla_put_u32(msg, NL80211_ATTR_CONN_FAILED_REASON, reason)) 9754 goto nla_put_failure; 9755 9756 genlmsg_end(msg, hdr); 9757 9758 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0, 9759 nl80211_mlme_mcgrp.id, gfp); 9760 return; 9761 9762 nla_put_failure: 9763 genlmsg_cancel(msg, hdr); 9764 nlmsg_free(msg); 9765 } 9766 EXPORT_SYMBOL(cfg80211_conn_failed); 9767 9768 static bool __nl80211_unexpected_frame(struct net_device *dev, u8 cmd, 9769 const u8 *addr, gfp_t gfp) 9770 { 9771 struct wireless_dev *wdev = dev->ieee80211_ptr; 9772 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy); 9773 struct sk_buff *msg; 9774 void *hdr; 9775 int err; 9776 u32 nlportid = ACCESS_ONCE(wdev->ap_unexpected_nlportid); 9777 9778 if (!nlportid) 9779 return false; 9780 9781 msg = nlmsg_new(100, gfp); 9782 if (!msg) 9783 return true; 9784 9785 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd); 9786 if (!hdr) { 9787 nlmsg_free(msg); 9788 return true; 9789 } 9790 9791 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 9792 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) || 9793 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) 9794 goto nla_put_failure; 9795 9796 err = genlmsg_end(msg, hdr); 9797 if (err < 0) { 9798 nlmsg_free(msg); 9799 return true; 9800 } 9801 9802 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid); 9803 return true; 9804 9805 nla_put_failure: 9806 genlmsg_cancel(msg, hdr); 9807 nlmsg_free(msg); 9808 return true; 9809 } 9810 9811 bool cfg80211_rx_spurious_frame(struct net_device *dev, 9812 const u8 *addr, gfp_t gfp) 9813 { 9814 struct wireless_dev *wdev = dev->ieee80211_ptr; 9815 bool ret; 9816 9817 trace_cfg80211_rx_spurious_frame(dev, addr); 9818 9819 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP && 9820 wdev->iftype != NL80211_IFTYPE_P2P_GO)) { 9821 trace_cfg80211_return_bool(false); 9822 return false; 9823 } 9824 ret = __nl80211_unexpected_frame(dev, NL80211_CMD_UNEXPECTED_FRAME, 9825 addr, gfp); 9826 trace_cfg80211_return_bool(ret); 9827 return ret; 9828 } 9829 EXPORT_SYMBOL(cfg80211_rx_spurious_frame); 9830 9831 bool cfg80211_rx_unexpected_4addr_frame(struct net_device *dev, 9832 const u8 *addr, gfp_t gfp) 9833 { 9834 struct wireless_dev *wdev = dev->ieee80211_ptr; 9835 bool ret; 9836 9837 trace_cfg80211_rx_unexpected_4addr_frame(dev, addr); 9838 9839 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP && 9840 wdev->iftype != NL80211_IFTYPE_P2P_GO && 9841 wdev->iftype != NL80211_IFTYPE_AP_VLAN)) { 9842 trace_cfg80211_return_bool(false); 9843 return false; 9844 } 9845 ret = __nl80211_unexpected_frame(dev, 9846 NL80211_CMD_UNEXPECTED_4ADDR_FRAME, 9847 addr, gfp); 9848 trace_cfg80211_return_bool(ret); 9849 return ret; 9850 } 9851 EXPORT_SYMBOL(cfg80211_rx_unexpected_4addr_frame); 9852 9853 int nl80211_send_mgmt(struct cfg80211_registered_device *rdev, 9854 struct wireless_dev *wdev, u32 nlportid, 9855 int freq, int sig_dbm, 9856 const u8 *buf, size_t len, gfp_t gfp) 9857 { 9858 struct net_device *netdev = wdev->netdev; 9859 struct sk_buff *msg; 9860 void *hdr; 9861 9862 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 9863 if (!msg) 9864 return -ENOMEM; 9865 9866 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME); 9867 if (!hdr) { 9868 nlmsg_free(msg); 9869 return -ENOMEM; 9870 } 9871 9872 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 9873 (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX, 9874 netdev->ifindex)) || 9875 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq) || 9876 (sig_dbm && 9877 nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) || 9878 nla_put(msg, NL80211_ATTR_FRAME, len, buf)) 9879 goto nla_put_failure; 9880 9881 genlmsg_end(msg, hdr); 9882 9883 return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid); 9884 9885 nla_put_failure: 9886 genlmsg_cancel(msg, hdr); 9887 nlmsg_free(msg); 9888 return -ENOBUFS; 9889 } 9890 9891 void cfg80211_mgmt_tx_status(struct wireless_dev *wdev, u64 cookie, 9892 const u8 *buf, size_t len, bool ack, gfp_t gfp) 9893 { 9894 struct wiphy *wiphy = wdev->wiphy; 9895 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); 9896 struct net_device *netdev = wdev->netdev; 9897 struct sk_buff *msg; 9898 void *hdr; 9899 9900 trace_cfg80211_mgmt_tx_status(wdev, cookie, ack); 9901 9902 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 9903 if (!msg) 9904 return; 9905 9906 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME_TX_STATUS); 9907 if (!hdr) { 9908 nlmsg_free(msg); 9909 return; 9910 } 9911 9912 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 9913 (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX, 9914 netdev->ifindex)) || 9915 nla_put(msg, NL80211_ATTR_FRAME, len, buf) || 9916 nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie) || 9917 (ack && nla_put_flag(msg, NL80211_ATTR_ACK))) 9918 goto nla_put_failure; 9919 9920 genlmsg_end(msg, hdr); 9921 9922 genlmsg_multicast(msg, 0, nl80211_mlme_mcgrp.id, gfp); 9923 return; 9924 9925 nla_put_failure: 9926 genlmsg_cancel(msg, hdr); 9927 nlmsg_free(msg); 9928 } 9929 EXPORT_SYMBOL(cfg80211_mgmt_tx_status); 9930 9931 void cfg80211_cqm_rssi_notify(struct net_device *dev, 9932 enum nl80211_cqm_rssi_threshold_event rssi_event, 9933 gfp_t gfp) 9934 { 9935 struct wireless_dev *wdev = dev->ieee80211_ptr; 9936 struct wiphy *wiphy = wdev->wiphy; 9937 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); 9938 struct sk_buff *msg; 9939 struct nlattr *pinfoattr; 9940 void *hdr; 9941 9942 trace_cfg80211_cqm_rssi_notify(dev, rssi_event); 9943 9944 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 9945 if (!msg) 9946 return; 9947 9948 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM); 9949 if (!hdr) { 9950 nlmsg_free(msg); 9951 return; 9952 } 9953 9954 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 9955 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex)) 9956 goto nla_put_failure; 9957 9958 pinfoattr = nla_nest_start(msg, NL80211_ATTR_CQM); 9959 if (!pinfoattr) 9960 goto nla_put_failure; 9961 9962 if (nla_put_u32(msg, NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT, 9963 rssi_event)) 9964 goto nla_put_failure; 9965 9966 nla_nest_end(msg, pinfoattr); 9967 9968 genlmsg_end(msg, hdr); 9969 9970 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0, 9971 nl80211_mlme_mcgrp.id, gfp); 9972 return; 9973 9974 nla_put_failure: 9975 genlmsg_cancel(msg, hdr); 9976 nlmsg_free(msg); 9977 } 9978 EXPORT_SYMBOL(cfg80211_cqm_rssi_notify); 9979 9980 static void nl80211_gtk_rekey_notify(struct cfg80211_registered_device *rdev, 9981 struct net_device *netdev, const u8 *bssid, 9982 const u8 *replay_ctr, gfp_t gfp) 9983 { 9984 struct sk_buff *msg; 9985 struct nlattr *rekey_attr; 9986 void *hdr; 9987 9988 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 9989 if (!msg) 9990 return; 9991 9992 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_REKEY_OFFLOAD); 9993 if (!hdr) { 9994 nlmsg_free(msg); 9995 return; 9996 } 9997 9998 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 9999 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) || 10000 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid)) 10001 goto nla_put_failure; 10002 10003 rekey_attr = nla_nest_start(msg, NL80211_ATTR_REKEY_DATA); 10004 if (!rekey_attr) 10005 goto nla_put_failure; 10006 10007 if (nla_put(msg, NL80211_REKEY_DATA_REPLAY_CTR, 10008 NL80211_REPLAY_CTR_LEN, replay_ctr)) 10009 goto nla_put_failure; 10010 10011 nla_nest_end(msg, rekey_attr); 10012 10013 genlmsg_end(msg, hdr); 10014 10015 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0, 10016 nl80211_mlme_mcgrp.id, gfp); 10017 return; 10018 10019 nla_put_failure: 10020 genlmsg_cancel(msg, hdr); 10021 nlmsg_free(msg); 10022 } 10023 10024 void cfg80211_gtk_rekey_notify(struct net_device *dev, const u8 *bssid, 10025 const u8 *replay_ctr, gfp_t gfp) 10026 { 10027 struct wireless_dev *wdev = dev->ieee80211_ptr; 10028 struct wiphy *wiphy = wdev->wiphy; 10029 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); 10030 10031 trace_cfg80211_gtk_rekey_notify(dev, bssid); 10032 nl80211_gtk_rekey_notify(rdev, dev, bssid, replay_ctr, gfp); 10033 } 10034 EXPORT_SYMBOL(cfg80211_gtk_rekey_notify); 10035 10036 static void 10037 nl80211_pmksa_candidate_notify(struct cfg80211_registered_device *rdev, 10038 struct net_device *netdev, int index, 10039 const u8 *bssid, bool preauth, gfp_t gfp) 10040 { 10041 struct sk_buff *msg; 10042 struct nlattr *attr; 10043 void *hdr; 10044 10045 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 10046 if (!msg) 10047 return; 10048 10049 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PMKSA_CANDIDATE); 10050 if (!hdr) { 10051 nlmsg_free(msg); 10052 return; 10053 } 10054 10055 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 10056 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex)) 10057 goto nla_put_failure; 10058 10059 attr = nla_nest_start(msg, NL80211_ATTR_PMKSA_CANDIDATE); 10060 if (!attr) 10061 goto nla_put_failure; 10062 10063 if (nla_put_u32(msg, NL80211_PMKSA_CANDIDATE_INDEX, index) || 10064 nla_put(msg, NL80211_PMKSA_CANDIDATE_BSSID, ETH_ALEN, bssid) || 10065 (preauth && 10066 nla_put_flag(msg, NL80211_PMKSA_CANDIDATE_PREAUTH))) 10067 goto nla_put_failure; 10068 10069 nla_nest_end(msg, attr); 10070 10071 genlmsg_end(msg, hdr); 10072 10073 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0, 10074 nl80211_mlme_mcgrp.id, gfp); 10075 return; 10076 10077 nla_put_failure: 10078 genlmsg_cancel(msg, hdr); 10079 nlmsg_free(msg); 10080 } 10081 10082 void cfg80211_pmksa_candidate_notify(struct net_device *dev, int index, 10083 const u8 *bssid, bool preauth, gfp_t gfp) 10084 { 10085 struct wireless_dev *wdev = dev->ieee80211_ptr; 10086 struct wiphy *wiphy = wdev->wiphy; 10087 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); 10088 10089 trace_cfg80211_pmksa_candidate_notify(dev, index, bssid, preauth); 10090 nl80211_pmksa_candidate_notify(rdev, dev, index, bssid, preauth, gfp); 10091 } 10092 EXPORT_SYMBOL(cfg80211_pmksa_candidate_notify); 10093 10094 static void nl80211_ch_switch_notify(struct cfg80211_registered_device *rdev, 10095 struct net_device *netdev, 10096 struct cfg80211_chan_def *chandef, 10097 gfp_t gfp) 10098 { 10099 struct sk_buff *msg; 10100 void *hdr; 10101 10102 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 10103 if (!msg) 10104 return; 10105 10106 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CH_SWITCH_NOTIFY); 10107 if (!hdr) { 10108 nlmsg_free(msg); 10109 return; 10110 } 10111 10112 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex)) 10113 goto nla_put_failure; 10114 10115 if (nl80211_send_chandef(msg, chandef)) 10116 goto nla_put_failure; 10117 10118 genlmsg_end(msg, hdr); 10119 10120 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0, 10121 nl80211_mlme_mcgrp.id, gfp); 10122 return; 10123 10124 nla_put_failure: 10125 genlmsg_cancel(msg, hdr); 10126 nlmsg_free(msg); 10127 } 10128 10129 void cfg80211_ch_switch_notify(struct net_device *dev, 10130 struct cfg80211_chan_def *chandef) 10131 { 10132 struct wireless_dev *wdev = dev->ieee80211_ptr; 10133 struct wiphy *wiphy = wdev->wiphy; 10134 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); 10135 10136 trace_cfg80211_ch_switch_notify(dev, chandef); 10137 10138 wdev_lock(wdev); 10139 10140 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP && 10141 wdev->iftype != NL80211_IFTYPE_P2P_GO)) 10142 goto out; 10143 10144 wdev->channel = chandef->chan; 10145 nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL); 10146 out: 10147 wdev_unlock(wdev); 10148 return; 10149 } 10150 EXPORT_SYMBOL(cfg80211_ch_switch_notify); 10151 10152 void cfg80211_cqm_txe_notify(struct net_device *dev, 10153 const u8 *peer, u32 num_packets, 10154 u32 rate, u32 intvl, gfp_t gfp) 10155 { 10156 struct wireless_dev *wdev = dev->ieee80211_ptr; 10157 struct wiphy *wiphy = wdev->wiphy; 10158 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); 10159 struct sk_buff *msg; 10160 struct nlattr *pinfoattr; 10161 void *hdr; 10162 10163 msg = nlmsg_new(NLMSG_GOODSIZE, gfp); 10164 if (!msg) 10165 return; 10166 10167 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM); 10168 if (!hdr) { 10169 nlmsg_free(msg); 10170 return; 10171 } 10172 10173 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 10174 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) || 10175 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer)) 10176 goto nla_put_failure; 10177 10178 pinfoattr = nla_nest_start(msg, NL80211_ATTR_CQM); 10179 if (!pinfoattr) 10180 goto nla_put_failure; 10181 10182 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_PKTS, num_packets)) 10183 goto nla_put_failure; 10184 10185 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_RATE, rate)) 10186 goto nla_put_failure; 10187 10188 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_INTVL, intvl)) 10189 goto nla_put_failure; 10190 10191 nla_nest_end(msg, pinfoattr); 10192 10193 genlmsg_end(msg, hdr); 10194 10195 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0, 10196 nl80211_mlme_mcgrp.id, gfp); 10197 return; 10198 10199 nla_put_failure: 10200 genlmsg_cancel(msg, hdr); 10201 nlmsg_free(msg); 10202 } 10203 EXPORT_SYMBOL(cfg80211_cqm_txe_notify); 10204 10205 void 10206 nl80211_radar_notify(struct cfg80211_registered_device *rdev, 10207 struct cfg80211_chan_def *chandef, 10208 enum nl80211_radar_event event, 10209 struct net_device *netdev, gfp_t gfp) 10210 { 10211 struct sk_buff *msg; 10212 void *hdr; 10213 10214 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 10215 if (!msg) 10216 return; 10217 10218 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_RADAR_DETECT); 10219 if (!hdr) { 10220 nlmsg_free(msg); 10221 return; 10222 } 10223 10224 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx)) 10225 goto nla_put_failure; 10226 10227 /* NOP and radar events don't need a netdev parameter */ 10228 if (netdev) { 10229 struct wireless_dev *wdev = netdev->ieee80211_ptr; 10230 10231 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) || 10232 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev))) 10233 goto nla_put_failure; 10234 } 10235 10236 if (nla_put_u32(msg, NL80211_ATTR_RADAR_EVENT, event)) 10237 goto nla_put_failure; 10238 10239 if (nl80211_send_chandef(msg, chandef)) 10240 goto nla_put_failure; 10241 10242 if (genlmsg_end(msg, hdr) < 0) { 10243 nlmsg_free(msg); 10244 return; 10245 } 10246 10247 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0, 10248 nl80211_mlme_mcgrp.id, gfp); 10249 return; 10250 10251 nla_put_failure: 10252 genlmsg_cancel(msg, hdr); 10253 nlmsg_free(msg); 10254 } 10255 10256 void cfg80211_cqm_pktloss_notify(struct net_device *dev, 10257 const u8 *peer, u32 num_packets, gfp_t gfp) 10258 { 10259 struct wireless_dev *wdev = dev->ieee80211_ptr; 10260 struct wiphy *wiphy = wdev->wiphy; 10261 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); 10262 struct sk_buff *msg; 10263 struct nlattr *pinfoattr; 10264 void *hdr; 10265 10266 trace_cfg80211_cqm_pktloss_notify(dev, peer, num_packets); 10267 10268 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 10269 if (!msg) 10270 return; 10271 10272 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM); 10273 if (!hdr) { 10274 nlmsg_free(msg); 10275 return; 10276 } 10277 10278 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 10279 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) || 10280 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer)) 10281 goto nla_put_failure; 10282 10283 pinfoattr = nla_nest_start(msg, NL80211_ATTR_CQM); 10284 if (!pinfoattr) 10285 goto nla_put_failure; 10286 10287 if (nla_put_u32(msg, NL80211_ATTR_CQM_PKT_LOSS_EVENT, num_packets)) 10288 goto nla_put_failure; 10289 10290 nla_nest_end(msg, pinfoattr); 10291 10292 genlmsg_end(msg, hdr); 10293 10294 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0, 10295 nl80211_mlme_mcgrp.id, gfp); 10296 return; 10297 10298 nla_put_failure: 10299 genlmsg_cancel(msg, hdr); 10300 nlmsg_free(msg); 10301 } 10302 EXPORT_SYMBOL(cfg80211_cqm_pktloss_notify); 10303 10304 void cfg80211_probe_status(struct net_device *dev, const u8 *addr, 10305 u64 cookie, bool acked, gfp_t gfp) 10306 { 10307 struct wireless_dev *wdev = dev->ieee80211_ptr; 10308 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy); 10309 struct sk_buff *msg; 10310 void *hdr; 10311 int err; 10312 10313 trace_cfg80211_probe_status(dev, addr, cookie, acked); 10314 10315 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 10316 10317 if (!msg) 10318 return; 10319 10320 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PROBE_CLIENT); 10321 if (!hdr) { 10322 nlmsg_free(msg); 10323 return; 10324 } 10325 10326 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 10327 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) || 10328 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) || 10329 nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie) || 10330 (acked && nla_put_flag(msg, NL80211_ATTR_ACK))) 10331 goto nla_put_failure; 10332 10333 err = genlmsg_end(msg, hdr); 10334 if (err < 0) { 10335 nlmsg_free(msg); 10336 return; 10337 } 10338 10339 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0, 10340 nl80211_mlme_mcgrp.id, gfp); 10341 return; 10342 10343 nla_put_failure: 10344 genlmsg_cancel(msg, hdr); 10345 nlmsg_free(msg); 10346 } 10347 EXPORT_SYMBOL(cfg80211_probe_status); 10348 10349 void cfg80211_report_obss_beacon(struct wiphy *wiphy, 10350 const u8 *frame, size_t len, 10351 int freq, int sig_dbm) 10352 { 10353 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); 10354 struct sk_buff *msg; 10355 void *hdr; 10356 struct cfg80211_beacon_registration *reg; 10357 10358 trace_cfg80211_report_obss_beacon(wiphy, frame, len, freq, sig_dbm); 10359 10360 spin_lock_bh(&rdev->beacon_registrations_lock); 10361 list_for_each_entry(reg, &rdev->beacon_registrations, list) { 10362 msg = nlmsg_new(len + 100, GFP_ATOMIC); 10363 if (!msg) { 10364 spin_unlock_bh(&rdev->beacon_registrations_lock); 10365 return; 10366 } 10367 10368 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME); 10369 if (!hdr) 10370 goto nla_put_failure; 10371 10372 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 10373 (freq && 10374 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq)) || 10375 (sig_dbm && 10376 nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) || 10377 nla_put(msg, NL80211_ATTR_FRAME, len, frame)) 10378 goto nla_put_failure; 10379 10380 genlmsg_end(msg, hdr); 10381 10382 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, reg->nlportid); 10383 } 10384 spin_unlock_bh(&rdev->beacon_registrations_lock); 10385 return; 10386 10387 nla_put_failure: 10388 spin_unlock_bh(&rdev->beacon_registrations_lock); 10389 if (hdr) 10390 genlmsg_cancel(msg, hdr); 10391 nlmsg_free(msg); 10392 } 10393 EXPORT_SYMBOL(cfg80211_report_obss_beacon); 10394 10395 #ifdef CONFIG_PM 10396 void cfg80211_report_wowlan_wakeup(struct wireless_dev *wdev, 10397 struct cfg80211_wowlan_wakeup *wakeup, 10398 gfp_t gfp) 10399 { 10400 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy); 10401 struct sk_buff *msg; 10402 void *hdr; 10403 int err, size = 200; 10404 10405 trace_cfg80211_report_wowlan_wakeup(wdev->wiphy, wdev, wakeup); 10406 10407 if (wakeup) 10408 size += wakeup->packet_present_len; 10409 10410 msg = nlmsg_new(size, gfp); 10411 if (!msg) 10412 return; 10413 10414 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_WOWLAN); 10415 if (!hdr) 10416 goto free_msg; 10417 10418 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 10419 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev))) 10420 goto free_msg; 10421 10422 if (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX, 10423 wdev->netdev->ifindex)) 10424 goto free_msg; 10425 10426 if (wakeup) { 10427 struct nlattr *reasons; 10428 10429 reasons = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS); 10430 10431 if (wakeup->disconnect && 10432 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) 10433 goto free_msg; 10434 if (wakeup->magic_pkt && 10435 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) 10436 goto free_msg; 10437 if (wakeup->gtk_rekey_failure && 10438 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) 10439 goto free_msg; 10440 if (wakeup->eap_identity_req && 10441 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) 10442 goto free_msg; 10443 if (wakeup->four_way_handshake && 10444 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) 10445 goto free_msg; 10446 if (wakeup->rfkill_release && 10447 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)) 10448 goto free_msg; 10449 10450 if (wakeup->pattern_idx >= 0 && 10451 nla_put_u32(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN, 10452 wakeup->pattern_idx)) 10453 goto free_msg; 10454 10455 if (wakeup->tcp_match) 10456 nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_MATCH); 10457 10458 if (wakeup->tcp_connlost) 10459 nla_put_flag(msg, 10460 NL80211_WOWLAN_TRIG_WAKEUP_TCP_CONNLOST); 10461 10462 if (wakeup->tcp_nomoretokens) 10463 nla_put_flag(msg, 10464 NL80211_WOWLAN_TRIG_WAKEUP_TCP_NOMORETOKENS); 10465 10466 if (wakeup->packet) { 10467 u32 pkt_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211; 10468 u32 len_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211_LEN; 10469 10470 if (!wakeup->packet_80211) { 10471 pkt_attr = 10472 NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023; 10473 len_attr = 10474 NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023_LEN; 10475 } 10476 10477 if (wakeup->packet_len && 10478 nla_put_u32(msg, len_attr, wakeup->packet_len)) 10479 goto free_msg; 10480 10481 if (nla_put(msg, pkt_attr, wakeup->packet_present_len, 10482 wakeup->packet)) 10483 goto free_msg; 10484 } 10485 10486 nla_nest_end(msg, reasons); 10487 } 10488 10489 err = genlmsg_end(msg, hdr); 10490 if (err < 0) 10491 goto free_msg; 10492 10493 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0, 10494 nl80211_mlme_mcgrp.id, gfp); 10495 return; 10496 10497 free_msg: 10498 nlmsg_free(msg); 10499 } 10500 EXPORT_SYMBOL(cfg80211_report_wowlan_wakeup); 10501 #endif 10502 10503 void cfg80211_tdls_oper_request(struct net_device *dev, const u8 *peer, 10504 enum nl80211_tdls_operation oper, 10505 u16 reason_code, gfp_t gfp) 10506 { 10507 struct wireless_dev *wdev = dev->ieee80211_ptr; 10508 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy); 10509 struct sk_buff *msg; 10510 void *hdr; 10511 int err; 10512 10513 trace_cfg80211_tdls_oper_request(wdev->wiphy, dev, peer, oper, 10514 reason_code); 10515 10516 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 10517 if (!msg) 10518 return; 10519 10520 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_TDLS_OPER); 10521 if (!hdr) { 10522 nlmsg_free(msg); 10523 return; 10524 } 10525 10526 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 10527 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) || 10528 nla_put_u8(msg, NL80211_ATTR_TDLS_OPERATION, oper) || 10529 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer) || 10530 (reason_code > 0 && 10531 nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason_code))) 10532 goto nla_put_failure; 10533 10534 err = genlmsg_end(msg, hdr); 10535 if (err < 0) { 10536 nlmsg_free(msg); 10537 return; 10538 } 10539 10540 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0, 10541 nl80211_mlme_mcgrp.id, gfp); 10542 return; 10543 10544 nla_put_failure: 10545 genlmsg_cancel(msg, hdr); 10546 nlmsg_free(msg); 10547 } 10548 EXPORT_SYMBOL(cfg80211_tdls_oper_request); 10549 10550 static int nl80211_netlink_notify(struct notifier_block * nb, 10551 unsigned long state, 10552 void *_notify) 10553 { 10554 struct netlink_notify *notify = _notify; 10555 struct cfg80211_registered_device *rdev; 10556 struct wireless_dev *wdev; 10557 struct cfg80211_beacon_registration *reg, *tmp; 10558 10559 if (state != NETLINK_URELEASE) 10560 return NOTIFY_DONE; 10561 10562 rcu_read_lock(); 10563 10564 list_for_each_entry_rcu(rdev, &cfg80211_rdev_list, list) { 10565 list_for_each_entry_rcu(wdev, &rdev->wdev_list, list) 10566 cfg80211_mlme_unregister_socket(wdev, notify->portid); 10567 10568 spin_lock_bh(&rdev->beacon_registrations_lock); 10569 list_for_each_entry_safe(reg, tmp, &rdev->beacon_registrations, 10570 list) { 10571 if (reg->nlportid == notify->portid) { 10572 list_del(®->list); 10573 kfree(reg); 10574 break; 10575 } 10576 } 10577 spin_unlock_bh(&rdev->beacon_registrations_lock); 10578 } 10579 10580 rcu_read_unlock(); 10581 10582 return NOTIFY_DONE; 10583 } 10584 10585 static struct notifier_block nl80211_netlink_notifier = { 10586 .notifier_call = nl80211_netlink_notify, 10587 }; 10588 10589 void cfg80211_ft_event(struct net_device *netdev, 10590 struct cfg80211_ft_event_params *ft_event) 10591 { 10592 struct wiphy *wiphy = netdev->ieee80211_ptr->wiphy; 10593 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); 10594 struct sk_buff *msg; 10595 void *hdr; 10596 int err; 10597 10598 trace_cfg80211_ft_event(wiphy, netdev, ft_event); 10599 10600 if (!ft_event->target_ap) 10601 return; 10602 10603 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 10604 if (!msg) 10605 return; 10606 10607 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FT_EVENT); 10608 if (!hdr) { 10609 nlmsg_free(msg); 10610 return; 10611 } 10612 10613 nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx); 10614 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex); 10615 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, ft_event->target_ap); 10616 if (ft_event->ies) 10617 nla_put(msg, NL80211_ATTR_IE, ft_event->ies_len, ft_event->ies); 10618 if (ft_event->ric_ies) 10619 nla_put(msg, NL80211_ATTR_IE_RIC, ft_event->ric_ies_len, 10620 ft_event->ric_ies); 10621 10622 err = genlmsg_end(msg, hdr); 10623 if (err < 0) { 10624 nlmsg_free(msg); 10625 return; 10626 } 10627 10628 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0, 10629 nl80211_mlme_mcgrp.id, GFP_KERNEL); 10630 } 10631 EXPORT_SYMBOL(cfg80211_ft_event); 10632 10633 /* initialisation/exit functions */ 10634 10635 int nl80211_init(void) 10636 { 10637 int err; 10638 10639 err = genl_register_family_with_ops(&nl80211_fam, 10640 nl80211_ops, ARRAY_SIZE(nl80211_ops)); 10641 if (err) 10642 return err; 10643 10644 err = genl_register_mc_group(&nl80211_fam, &nl80211_config_mcgrp); 10645 if (err) 10646 goto err_out; 10647 10648 err = genl_register_mc_group(&nl80211_fam, &nl80211_scan_mcgrp); 10649 if (err) 10650 goto err_out; 10651 10652 err = genl_register_mc_group(&nl80211_fam, &nl80211_regulatory_mcgrp); 10653 if (err) 10654 goto err_out; 10655 10656 err = genl_register_mc_group(&nl80211_fam, &nl80211_mlme_mcgrp); 10657 if (err) 10658 goto err_out; 10659 10660 #ifdef CONFIG_NL80211_TESTMODE 10661 err = genl_register_mc_group(&nl80211_fam, &nl80211_testmode_mcgrp); 10662 if (err) 10663 goto err_out; 10664 #endif 10665 10666 err = netlink_register_notifier(&nl80211_netlink_notifier); 10667 if (err) 10668 goto err_out; 10669 10670 return 0; 10671 err_out: 10672 genl_unregister_family(&nl80211_fam); 10673 return err; 10674 } 10675 10676 void nl80211_exit(void) 10677 { 10678 netlink_unregister_notifier(&nl80211_netlink_notifier); 10679 genl_unregister_family(&nl80211_fam); 10680 } 10681