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 static int nl80211_prepare_wdev_dump(struct sk_buff *skb, 451 struct netlink_callback *cb, 452 struct cfg80211_registered_device **rdev, 453 struct wireless_dev **wdev) 454 { 455 int err; 456 457 rtnl_lock(); 458 mutex_lock(&cfg80211_mutex); 459 460 if (!cb->args[0]) { 461 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize, 462 nl80211_fam.attrbuf, nl80211_fam.maxattr, 463 nl80211_policy); 464 if (err) 465 goto out_unlock; 466 467 *wdev = __cfg80211_wdev_from_attrs(sock_net(skb->sk), 468 nl80211_fam.attrbuf); 469 if (IS_ERR(*wdev)) { 470 err = PTR_ERR(*wdev); 471 goto out_unlock; 472 } 473 *rdev = wiphy_to_dev((*wdev)->wiphy); 474 cb->args[0] = (*rdev)->wiphy_idx; 475 cb->args[1] = (*wdev)->identifier; 476 } else { 477 struct wiphy *wiphy = wiphy_idx_to_wiphy(cb->args[0]); 478 struct wireless_dev *tmp; 479 480 if (!wiphy) { 481 err = -ENODEV; 482 goto out_unlock; 483 } 484 *rdev = wiphy_to_dev(wiphy); 485 *wdev = NULL; 486 487 mutex_lock(&(*rdev)->devlist_mtx); 488 list_for_each_entry(tmp, &(*rdev)->wdev_list, list) { 489 if (tmp->identifier == cb->args[1]) { 490 *wdev = tmp; 491 break; 492 } 493 } 494 mutex_unlock(&(*rdev)->devlist_mtx); 495 496 if (!*wdev) { 497 err = -ENODEV; 498 goto out_unlock; 499 } 500 } 501 502 cfg80211_lock_rdev(*rdev); 503 504 mutex_unlock(&cfg80211_mutex); 505 return 0; 506 out_unlock: 507 mutex_unlock(&cfg80211_mutex); 508 rtnl_unlock(); 509 return err; 510 } 511 512 static void nl80211_finish_wdev_dump(struct cfg80211_registered_device *rdev) 513 { 514 cfg80211_unlock_rdev(rdev); 515 rtnl_unlock(); 516 } 517 518 /* IE validation */ 519 static bool is_valid_ie_attr(const struct nlattr *attr) 520 { 521 const u8 *pos; 522 int len; 523 524 if (!attr) 525 return true; 526 527 pos = nla_data(attr); 528 len = nla_len(attr); 529 530 while (len) { 531 u8 elemlen; 532 533 if (len < 2) 534 return false; 535 len -= 2; 536 537 elemlen = pos[1]; 538 if (elemlen > len) 539 return false; 540 541 len -= elemlen; 542 pos += 2 + elemlen; 543 } 544 545 return true; 546 } 547 548 /* message building helper */ 549 static inline void *nl80211hdr_put(struct sk_buff *skb, u32 portid, u32 seq, 550 int flags, u8 cmd) 551 { 552 /* since there is no private header just add the generic one */ 553 return genlmsg_put(skb, portid, seq, &nl80211_fam, flags, cmd); 554 } 555 556 static int nl80211_msg_put_channel(struct sk_buff *msg, 557 struct ieee80211_channel *chan, 558 bool large) 559 { 560 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_FREQ, 561 chan->center_freq)) 562 goto nla_put_failure; 563 564 if ((chan->flags & IEEE80211_CHAN_DISABLED) && 565 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_DISABLED)) 566 goto nla_put_failure; 567 if ((chan->flags & IEEE80211_CHAN_PASSIVE_SCAN) && 568 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_PASSIVE_SCAN)) 569 goto nla_put_failure; 570 if ((chan->flags & IEEE80211_CHAN_NO_IBSS) && 571 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_IBSS)) 572 goto nla_put_failure; 573 if (chan->flags & IEEE80211_CHAN_RADAR) { 574 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_RADAR)) 575 goto nla_put_failure; 576 if (large) { 577 u32 time; 578 579 time = elapsed_jiffies_msecs(chan->dfs_state_entered); 580 581 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_STATE, 582 chan->dfs_state)) 583 goto nla_put_failure; 584 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_TIME, 585 time)) 586 goto nla_put_failure; 587 } 588 } 589 590 if (large) { 591 if ((chan->flags & IEEE80211_CHAN_NO_HT40MINUS) && 592 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_MINUS)) 593 goto nla_put_failure; 594 if ((chan->flags & IEEE80211_CHAN_NO_HT40PLUS) && 595 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_PLUS)) 596 goto nla_put_failure; 597 if ((chan->flags & IEEE80211_CHAN_NO_80MHZ) && 598 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_80MHZ)) 599 goto nla_put_failure; 600 if ((chan->flags & IEEE80211_CHAN_NO_160MHZ) && 601 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_160MHZ)) 602 goto nla_put_failure; 603 } 604 605 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_MAX_TX_POWER, 606 DBM_TO_MBM(chan->max_power))) 607 goto nla_put_failure; 608 609 return 0; 610 611 nla_put_failure: 612 return -ENOBUFS; 613 } 614 615 /* netlink command implementations */ 616 617 struct key_parse { 618 struct key_params p; 619 int idx; 620 int type; 621 bool def, defmgmt; 622 bool def_uni, def_multi; 623 }; 624 625 static int nl80211_parse_key_new(struct nlattr *key, struct key_parse *k) 626 { 627 struct nlattr *tb[NL80211_KEY_MAX + 1]; 628 int err = nla_parse_nested(tb, NL80211_KEY_MAX, key, 629 nl80211_key_policy); 630 if (err) 631 return err; 632 633 k->def = !!tb[NL80211_KEY_DEFAULT]; 634 k->defmgmt = !!tb[NL80211_KEY_DEFAULT_MGMT]; 635 636 if (k->def) { 637 k->def_uni = true; 638 k->def_multi = true; 639 } 640 if (k->defmgmt) 641 k->def_multi = true; 642 643 if (tb[NL80211_KEY_IDX]) 644 k->idx = nla_get_u8(tb[NL80211_KEY_IDX]); 645 646 if (tb[NL80211_KEY_DATA]) { 647 k->p.key = nla_data(tb[NL80211_KEY_DATA]); 648 k->p.key_len = nla_len(tb[NL80211_KEY_DATA]); 649 } 650 651 if (tb[NL80211_KEY_SEQ]) { 652 k->p.seq = nla_data(tb[NL80211_KEY_SEQ]); 653 k->p.seq_len = nla_len(tb[NL80211_KEY_SEQ]); 654 } 655 656 if (tb[NL80211_KEY_CIPHER]) 657 k->p.cipher = nla_get_u32(tb[NL80211_KEY_CIPHER]); 658 659 if (tb[NL80211_KEY_TYPE]) { 660 k->type = nla_get_u32(tb[NL80211_KEY_TYPE]); 661 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES) 662 return -EINVAL; 663 } 664 665 if (tb[NL80211_KEY_DEFAULT_TYPES]) { 666 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES]; 667 err = nla_parse_nested(kdt, NUM_NL80211_KEY_DEFAULT_TYPES - 1, 668 tb[NL80211_KEY_DEFAULT_TYPES], 669 nl80211_key_default_policy); 670 if (err) 671 return err; 672 673 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST]; 674 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST]; 675 } 676 677 return 0; 678 } 679 680 static int nl80211_parse_key_old(struct genl_info *info, struct key_parse *k) 681 { 682 if (info->attrs[NL80211_ATTR_KEY_DATA]) { 683 k->p.key = nla_data(info->attrs[NL80211_ATTR_KEY_DATA]); 684 k->p.key_len = nla_len(info->attrs[NL80211_ATTR_KEY_DATA]); 685 } 686 687 if (info->attrs[NL80211_ATTR_KEY_SEQ]) { 688 k->p.seq = nla_data(info->attrs[NL80211_ATTR_KEY_SEQ]); 689 k->p.seq_len = nla_len(info->attrs[NL80211_ATTR_KEY_SEQ]); 690 } 691 692 if (info->attrs[NL80211_ATTR_KEY_IDX]) 693 k->idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]); 694 695 if (info->attrs[NL80211_ATTR_KEY_CIPHER]) 696 k->p.cipher = nla_get_u32(info->attrs[NL80211_ATTR_KEY_CIPHER]); 697 698 k->def = !!info->attrs[NL80211_ATTR_KEY_DEFAULT]; 699 k->defmgmt = !!info->attrs[NL80211_ATTR_KEY_DEFAULT_MGMT]; 700 701 if (k->def) { 702 k->def_uni = true; 703 k->def_multi = true; 704 } 705 if (k->defmgmt) 706 k->def_multi = true; 707 708 if (info->attrs[NL80211_ATTR_KEY_TYPE]) { 709 k->type = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]); 710 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES) 711 return -EINVAL; 712 } 713 714 if (info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES]) { 715 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES]; 716 int err = nla_parse_nested( 717 kdt, NUM_NL80211_KEY_DEFAULT_TYPES - 1, 718 info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES], 719 nl80211_key_default_policy); 720 if (err) 721 return err; 722 723 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST]; 724 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST]; 725 } 726 727 return 0; 728 } 729 730 static int nl80211_parse_key(struct genl_info *info, struct key_parse *k) 731 { 732 int err; 733 734 memset(k, 0, sizeof(*k)); 735 k->idx = -1; 736 k->type = -1; 737 738 if (info->attrs[NL80211_ATTR_KEY]) 739 err = nl80211_parse_key_new(info->attrs[NL80211_ATTR_KEY], k); 740 else 741 err = nl80211_parse_key_old(info, k); 742 743 if (err) 744 return err; 745 746 if (k->def && k->defmgmt) 747 return -EINVAL; 748 749 if (k->defmgmt) { 750 if (k->def_uni || !k->def_multi) 751 return -EINVAL; 752 } 753 754 if (k->idx != -1) { 755 if (k->defmgmt) { 756 if (k->idx < 4 || k->idx > 5) 757 return -EINVAL; 758 } else if (k->def) { 759 if (k->idx < 0 || k->idx > 3) 760 return -EINVAL; 761 } else { 762 if (k->idx < 0 || k->idx > 5) 763 return -EINVAL; 764 } 765 } 766 767 return 0; 768 } 769 770 static struct cfg80211_cached_keys * 771 nl80211_parse_connkeys(struct cfg80211_registered_device *rdev, 772 struct nlattr *keys, bool *no_ht) 773 { 774 struct key_parse parse; 775 struct nlattr *key; 776 struct cfg80211_cached_keys *result; 777 int rem, err, def = 0; 778 779 result = kzalloc(sizeof(*result), GFP_KERNEL); 780 if (!result) 781 return ERR_PTR(-ENOMEM); 782 783 result->def = -1; 784 result->defmgmt = -1; 785 786 nla_for_each_nested(key, keys, rem) { 787 memset(&parse, 0, sizeof(parse)); 788 parse.idx = -1; 789 790 err = nl80211_parse_key_new(key, &parse); 791 if (err) 792 goto error; 793 err = -EINVAL; 794 if (!parse.p.key) 795 goto error; 796 if (parse.idx < 0 || parse.idx > 4) 797 goto error; 798 if (parse.def) { 799 if (def) 800 goto error; 801 def = 1; 802 result->def = parse.idx; 803 if (!parse.def_uni || !parse.def_multi) 804 goto error; 805 } else if (parse.defmgmt) 806 goto error; 807 err = cfg80211_validate_key_settings(rdev, &parse.p, 808 parse.idx, false, NULL); 809 if (err) 810 goto error; 811 result->params[parse.idx].cipher = parse.p.cipher; 812 result->params[parse.idx].key_len = parse.p.key_len; 813 result->params[parse.idx].key = result->data[parse.idx]; 814 memcpy(result->data[parse.idx], parse.p.key, parse.p.key_len); 815 816 if (parse.p.cipher == WLAN_CIPHER_SUITE_WEP40 || 817 parse.p.cipher == WLAN_CIPHER_SUITE_WEP104) { 818 if (no_ht) 819 *no_ht = true; 820 } 821 } 822 823 return result; 824 error: 825 kfree(result); 826 return ERR_PTR(err); 827 } 828 829 static int nl80211_key_allowed(struct wireless_dev *wdev) 830 { 831 ASSERT_WDEV_LOCK(wdev); 832 833 switch (wdev->iftype) { 834 case NL80211_IFTYPE_AP: 835 case NL80211_IFTYPE_AP_VLAN: 836 case NL80211_IFTYPE_P2P_GO: 837 case NL80211_IFTYPE_MESH_POINT: 838 break; 839 case NL80211_IFTYPE_ADHOC: 840 if (!wdev->current_bss) 841 return -ENOLINK; 842 break; 843 case NL80211_IFTYPE_STATION: 844 case NL80211_IFTYPE_P2P_CLIENT: 845 if (wdev->sme_state != CFG80211_SME_CONNECTED) 846 return -ENOLINK; 847 break; 848 default: 849 return -EINVAL; 850 } 851 852 return 0; 853 } 854 855 static int nl80211_put_iftypes(struct sk_buff *msg, u32 attr, u16 ifmodes) 856 { 857 struct nlattr *nl_modes = nla_nest_start(msg, attr); 858 int i; 859 860 if (!nl_modes) 861 goto nla_put_failure; 862 863 i = 0; 864 while (ifmodes) { 865 if ((ifmodes & 1) && nla_put_flag(msg, i)) 866 goto nla_put_failure; 867 ifmodes >>= 1; 868 i++; 869 } 870 871 nla_nest_end(msg, nl_modes); 872 return 0; 873 874 nla_put_failure: 875 return -ENOBUFS; 876 } 877 878 static int nl80211_put_iface_combinations(struct wiphy *wiphy, 879 struct sk_buff *msg, 880 bool large) 881 { 882 struct nlattr *nl_combis; 883 int i, j; 884 885 nl_combis = nla_nest_start(msg, 886 NL80211_ATTR_INTERFACE_COMBINATIONS); 887 if (!nl_combis) 888 goto nla_put_failure; 889 890 for (i = 0; i < wiphy->n_iface_combinations; i++) { 891 const struct ieee80211_iface_combination *c; 892 struct nlattr *nl_combi, *nl_limits; 893 894 c = &wiphy->iface_combinations[i]; 895 896 nl_combi = nla_nest_start(msg, i + 1); 897 if (!nl_combi) 898 goto nla_put_failure; 899 900 nl_limits = nla_nest_start(msg, NL80211_IFACE_COMB_LIMITS); 901 if (!nl_limits) 902 goto nla_put_failure; 903 904 for (j = 0; j < c->n_limits; j++) { 905 struct nlattr *nl_limit; 906 907 nl_limit = nla_nest_start(msg, j + 1); 908 if (!nl_limit) 909 goto nla_put_failure; 910 if (nla_put_u32(msg, NL80211_IFACE_LIMIT_MAX, 911 c->limits[j].max)) 912 goto nla_put_failure; 913 if (nl80211_put_iftypes(msg, NL80211_IFACE_LIMIT_TYPES, 914 c->limits[j].types)) 915 goto nla_put_failure; 916 nla_nest_end(msg, nl_limit); 917 } 918 919 nla_nest_end(msg, nl_limits); 920 921 if (c->beacon_int_infra_match && 922 nla_put_flag(msg, NL80211_IFACE_COMB_STA_AP_BI_MATCH)) 923 goto nla_put_failure; 924 if (nla_put_u32(msg, NL80211_IFACE_COMB_NUM_CHANNELS, 925 c->num_different_channels) || 926 nla_put_u32(msg, NL80211_IFACE_COMB_MAXNUM, 927 c->max_interfaces)) 928 goto nla_put_failure; 929 if (large && 930 nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_WIDTHS, 931 c->radar_detect_widths)) 932 goto nla_put_failure; 933 934 nla_nest_end(msg, nl_combi); 935 } 936 937 nla_nest_end(msg, nl_combis); 938 939 return 0; 940 nla_put_failure: 941 return -ENOBUFS; 942 } 943 944 #ifdef CONFIG_PM 945 static int nl80211_send_wowlan_tcp_caps(struct cfg80211_registered_device *rdev, 946 struct sk_buff *msg) 947 { 948 const struct wiphy_wowlan_tcp_support *tcp = rdev->wiphy.wowlan.tcp; 949 struct nlattr *nl_tcp; 950 951 if (!tcp) 952 return 0; 953 954 nl_tcp = nla_nest_start(msg, NL80211_WOWLAN_TRIG_TCP_CONNECTION); 955 if (!nl_tcp) 956 return -ENOBUFS; 957 958 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD, 959 tcp->data_payload_max)) 960 return -ENOBUFS; 961 962 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD, 963 tcp->data_payload_max)) 964 return -ENOBUFS; 965 966 if (tcp->seq && nla_put_flag(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ)) 967 return -ENOBUFS; 968 969 if (tcp->tok && nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN, 970 sizeof(*tcp->tok), tcp->tok)) 971 return -ENOBUFS; 972 973 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL, 974 tcp->data_interval_max)) 975 return -ENOBUFS; 976 977 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD, 978 tcp->wake_payload_max)) 979 return -ENOBUFS; 980 981 nla_nest_end(msg, nl_tcp); 982 return 0; 983 } 984 985 static int nl80211_send_wowlan(struct sk_buff *msg, 986 struct cfg80211_registered_device *dev, 987 bool large) 988 { 989 struct nlattr *nl_wowlan; 990 991 if (!dev->wiphy.wowlan.flags && !dev->wiphy.wowlan.n_patterns) 992 return 0; 993 994 nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS_SUPPORTED); 995 if (!nl_wowlan) 996 return -ENOBUFS; 997 998 if (((dev->wiphy.wowlan.flags & WIPHY_WOWLAN_ANY) && 999 nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) || 1000 ((dev->wiphy.wowlan.flags & WIPHY_WOWLAN_DISCONNECT) && 1001 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) || 1002 ((dev->wiphy.wowlan.flags & WIPHY_WOWLAN_MAGIC_PKT) && 1003 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) || 1004 ((dev->wiphy.wowlan.flags & WIPHY_WOWLAN_SUPPORTS_GTK_REKEY) && 1005 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED)) || 1006 ((dev->wiphy.wowlan.flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE) && 1007 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) || 1008 ((dev->wiphy.wowlan.flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ) && 1009 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) || 1010 ((dev->wiphy.wowlan.flags & WIPHY_WOWLAN_4WAY_HANDSHAKE) && 1011 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) || 1012 ((dev->wiphy.wowlan.flags & WIPHY_WOWLAN_RFKILL_RELEASE) && 1013 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE))) 1014 return -ENOBUFS; 1015 1016 if (dev->wiphy.wowlan.n_patterns) { 1017 struct nl80211_wowlan_pattern_support pat = { 1018 .max_patterns = dev->wiphy.wowlan.n_patterns, 1019 .min_pattern_len = dev->wiphy.wowlan.pattern_min_len, 1020 .max_pattern_len = dev->wiphy.wowlan.pattern_max_len, 1021 .max_pkt_offset = dev->wiphy.wowlan.max_pkt_offset, 1022 }; 1023 1024 if (nla_put(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN, 1025 sizeof(pat), &pat)) 1026 return -ENOBUFS; 1027 } 1028 1029 if (large && nl80211_send_wowlan_tcp_caps(dev, msg)) 1030 return -ENOBUFS; 1031 1032 nla_nest_end(msg, nl_wowlan); 1033 1034 return 0; 1035 } 1036 #endif 1037 1038 static int nl80211_send_band_rateinfo(struct sk_buff *msg, 1039 struct ieee80211_supported_band *sband) 1040 { 1041 struct nlattr *nl_rates, *nl_rate; 1042 struct ieee80211_rate *rate; 1043 int i; 1044 1045 /* add HT info */ 1046 if (sband->ht_cap.ht_supported && 1047 (nla_put(msg, NL80211_BAND_ATTR_HT_MCS_SET, 1048 sizeof(sband->ht_cap.mcs), 1049 &sband->ht_cap.mcs) || 1050 nla_put_u16(msg, NL80211_BAND_ATTR_HT_CAPA, 1051 sband->ht_cap.cap) || 1052 nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_FACTOR, 1053 sband->ht_cap.ampdu_factor) || 1054 nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_DENSITY, 1055 sband->ht_cap.ampdu_density))) 1056 return -ENOBUFS; 1057 1058 /* add VHT info */ 1059 if (sband->vht_cap.vht_supported && 1060 (nla_put(msg, NL80211_BAND_ATTR_VHT_MCS_SET, 1061 sizeof(sband->vht_cap.vht_mcs), 1062 &sband->vht_cap.vht_mcs) || 1063 nla_put_u32(msg, NL80211_BAND_ATTR_VHT_CAPA, 1064 sband->vht_cap.cap))) 1065 return -ENOBUFS; 1066 1067 /* add bitrates */ 1068 nl_rates = nla_nest_start(msg, NL80211_BAND_ATTR_RATES); 1069 if (!nl_rates) 1070 return -ENOBUFS; 1071 1072 for (i = 0; i < sband->n_bitrates; i++) { 1073 nl_rate = nla_nest_start(msg, i); 1074 if (!nl_rate) 1075 return -ENOBUFS; 1076 1077 rate = &sband->bitrates[i]; 1078 if (nla_put_u32(msg, NL80211_BITRATE_ATTR_RATE, 1079 rate->bitrate)) 1080 return -ENOBUFS; 1081 if ((rate->flags & IEEE80211_RATE_SHORT_PREAMBLE) && 1082 nla_put_flag(msg, 1083 NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE)) 1084 return -ENOBUFS; 1085 1086 nla_nest_end(msg, nl_rate); 1087 } 1088 1089 nla_nest_end(msg, nl_rates); 1090 1091 return 0; 1092 } 1093 1094 static int 1095 nl80211_send_mgmt_stypes(struct sk_buff *msg, 1096 const struct ieee80211_txrx_stypes *mgmt_stypes) 1097 { 1098 u16 stypes; 1099 struct nlattr *nl_ftypes, *nl_ifs; 1100 enum nl80211_iftype ift; 1101 int i; 1102 1103 if (!mgmt_stypes) 1104 return 0; 1105 1106 nl_ifs = nla_nest_start(msg, NL80211_ATTR_TX_FRAME_TYPES); 1107 if (!nl_ifs) 1108 return -ENOBUFS; 1109 1110 for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) { 1111 nl_ftypes = nla_nest_start(msg, ift); 1112 if (!nl_ftypes) 1113 return -ENOBUFS; 1114 i = 0; 1115 stypes = mgmt_stypes[ift].tx; 1116 while (stypes) { 1117 if ((stypes & 1) && 1118 nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE, 1119 (i << 4) | IEEE80211_FTYPE_MGMT)) 1120 return -ENOBUFS; 1121 stypes >>= 1; 1122 i++; 1123 } 1124 nla_nest_end(msg, nl_ftypes); 1125 } 1126 1127 nla_nest_end(msg, nl_ifs); 1128 1129 nl_ifs = nla_nest_start(msg, NL80211_ATTR_RX_FRAME_TYPES); 1130 if (!nl_ifs) 1131 return -ENOBUFS; 1132 1133 for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) { 1134 nl_ftypes = nla_nest_start(msg, ift); 1135 if (!nl_ftypes) 1136 return -ENOBUFS; 1137 i = 0; 1138 stypes = mgmt_stypes[ift].rx; 1139 while (stypes) { 1140 if ((stypes & 1) && 1141 nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE, 1142 (i << 4) | IEEE80211_FTYPE_MGMT)) 1143 return -ENOBUFS; 1144 stypes >>= 1; 1145 i++; 1146 } 1147 nla_nest_end(msg, nl_ftypes); 1148 } 1149 nla_nest_end(msg, nl_ifs); 1150 1151 return 0; 1152 } 1153 1154 static int nl80211_send_wiphy(struct cfg80211_registered_device *dev, 1155 struct sk_buff *msg, u32 portid, u32 seq, 1156 int flags, bool split, long *split_start, 1157 long *band_start, long *chan_start) 1158 { 1159 void *hdr; 1160 struct nlattr *nl_bands, *nl_band; 1161 struct nlattr *nl_freqs, *nl_freq; 1162 struct nlattr *nl_cmds; 1163 enum ieee80211_band band; 1164 struct ieee80211_channel *chan; 1165 int i; 1166 const struct ieee80211_txrx_stypes *mgmt_stypes = 1167 dev->wiphy.mgmt_stypes; 1168 long start = 0, start_chan = 0, start_band = 0; 1169 u32 features; 1170 1171 hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_WIPHY); 1172 if (!hdr) 1173 return -ENOBUFS; 1174 1175 /* allow always using the variables */ 1176 if (!split) { 1177 split_start = &start; 1178 band_start = &start_band; 1179 chan_start = &start_chan; 1180 } 1181 1182 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, dev->wiphy_idx) || 1183 nla_put_string(msg, NL80211_ATTR_WIPHY_NAME, 1184 wiphy_name(&dev->wiphy)) || 1185 nla_put_u32(msg, NL80211_ATTR_GENERATION, 1186 cfg80211_rdev_list_generation)) 1187 goto nla_put_failure; 1188 1189 switch (*split_start) { 1190 case 0: 1191 if (nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_SHORT, 1192 dev->wiphy.retry_short) || 1193 nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_LONG, 1194 dev->wiphy.retry_long) || 1195 nla_put_u32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD, 1196 dev->wiphy.frag_threshold) || 1197 nla_put_u32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD, 1198 dev->wiphy.rts_threshold) || 1199 nla_put_u8(msg, NL80211_ATTR_WIPHY_COVERAGE_CLASS, 1200 dev->wiphy.coverage_class) || 1201 nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCAN_SSIDS, 1202 dev->wiphy.max_scan_ssids) || 1203 nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS, 1204 dev->wiphy.max_sched_scan_ssids) || 1205 nla_put_u16(msg, NL80211_ATTR_MAX_SCAN_IE_LEN, 1206 dev->wiphy.max_scan_ie_len) || 1207 nla_put_u16(msg, NL80211_ATTR_MAX_SCHED_SCAN_IE_LEN, 1208 dev->wiphy.max_sched_scan_ie_len) || 1209 nla_put_u8(msg, NL80211_ATTR_MAX_MATCH_SETS, 1210 dev->wiphy.max_match_sets)) 1211 goto nla_put_failure; 1212 1213 if ((dev->wiphy.flags & WIPHY_FLAG_IBSS_RSN) && 1214 nla_put_flag(msg, NL80211_ATTR_SUPPORT_IBSS_RSN)) 1215 goto nla_put_failure; 1216 if ((dev->wiphy.flags & WIPHY_FLAG_MESH_AUTH) && 1217 nla_put_flag(msg, NL80211_ATTR_SUPPORT_MESH_AUTH)) 1218 goto nla_put_failure; 1219 if ((dev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) && 1220 nla_put_flag(msg, NL80211_ATTR_SUPPORT_AP_UAPSD)) 1221 goto nla_put_failure; 1222 if ((dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_FW_ROAM) && 1223 nla_put_flag(msg, NL80211_ATTR_ROAM_SUPPORT)) 1224 goto nla_put_failure; 1225 if ((dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) && 1226 nla_put_flag(msg, NL80211_ATTR_TDLS_SUPPORT)) 1227 goto nla_put_failure; 1228 if ((dev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP) && 1229 nla_put_flag(msg, NL80211_ATTR_TDLS_EXTERNAL_SETUP)) 1230 goto nla_put_failure; 1231 1232 (*split_start)++; 1233 if (split) 1234 break; 1235 case 1: 1236 if (nla_put(msg, NL80211_ATTR_CIPHER_SUITES, 1237 sizeof(u32) * dev->wiphy.n_cipher_suites, 1238 dev->wiphy.cipher_suites)) 1239 goto nla_put_failure; 1240 1241 if (nla_put_u8(msg, NL80211_ATTR_MAX_NUM_PMKIDS, 1242 dev->wiphy.max_num_pmkids)) 1243 goto nla_put_failure; 1244 1245 if ((dev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) && 1246 nla_put_flag(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE)) 1247 goto nla_put_failure; 1248 1249 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_TX, 1250 dev->wiphy.available_antennas_tx) || 1251 nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_RX, 1252 dev->wiphy.available_antennas_rx)) 1253 goto nla_put_failure; 1254 1255 if ((dev->wiphy.flags & WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD) && 1256 nla_put_u32(msg, NL80211_ATTR_PROBE_RESP_OFFLOAD, 1257 dev->wiphy.probe_resp_offload)) 1258 goto nla_put_failure; 1259 1260 if ((dev->wiphy.available_antennas_tx || 1261 dev->wiphy.available_antennas_rx) && 1262 dev->ops->get_antenna) { 1263 u32 tx_ant = 0, rx_ant = 0; 1264 int res; 1265 res = rdev_get_antenna(dev, &tx_ant, &rx_ant); 1266 if (!res) { 1267 if (nla_put_u32(msg, 1268 NL80211_ATTR_WIPHY_ANTENNA_TX, 1269 tx_ant) || 1270 nla_put_u32(msg, 1271 NL80211_ATTR_WIPHY_ANTENNA_RX, 1272 rx_ant)) 1273 goto nla_put_failure; 1274 } 1275 } 1276 1277 (*split_start)++; 1278 if (split) 1279 break; 1280 case 2: 1281 if (nl80211_put_iftypes(msg, NL80211_ATTR_SUPPORTED_IFTYPES, 1282 dev->wiphy.interface_modes)) 1283 goto nla_put_failure; 1284 (*split_start)++; 1285 if (split) 1286 break; 1287 case 3: 1288 nl_bands = nla_nest_start(msg, NL80211_ATTR_WIPHY_BANDS); 1289 if (!nl_bands) 1290 goto nla_put_failure; 1291 1292 for (band = *band_start; band < IEEE80211_NUM_BANDS; band++) { 1293 struct ieee80211_supported_band *sband; 1294 1295 sband = dev->wiphy.bands[band]; 1296 1297 if (!sband) 1298 continue; 1299 1300 nl_band = nla_nest_start(msg, band); 1301 if (!nl_band) 1302 goto nla_put_failure; 1303 1304 switch (*chan_start) { 1305 case 0: 1306 if (nl80211_send_band_rateinfo(msg, sband)) 1307 goto nla_put_failure; 1308 (*chan_start)++; 1309 if (split) 1310 break; 1311 default: 1312 /* add frequencies */ 1313 nl_freqs = nla_nest_start( 1314 msg, NL80211_BAND_ATTR_FREQS); 1315 if (!nl_freqs) 1316 goto nla_put_failure; 1317 1318 for (i = *chan_start - 1; 1319 i < sband->n_channels; 1320 i++) { 1321 nl_freq = nla_nest_start(msg, i); 1322 if (!nl_freq) 1323 goto nla_put_failure; 1324 1325 chan = &sband->channels[i]; 1326 1327 if (nl80211_msg_put_channel(msg, chan, 1328 split)) 1329 goto nla_put_failure; 1330 1331 nla_nest_end(msg, nl_freq); 1332 if (split) 1333 break; 1334 } 1335 if (i < sband->n_channels) 1336 *chan_start = i + 2; 1337 else 1338 *chan_start = 0; 1339 nla_nest_end(msg, nl_freqs); 1340 } 1341 1342 nla_nest_end(msg, nl_band); 1343 1344 if (split) { 1345 /* start again here */ 1346 if (*chan_start) 1347 band--; 1348 break; 1349 } 1350 } 1351 nla_nest_end(msg, nl_bands); 1352 1353 if (band < IEEE80211_NUM_BANDS) 1354 *band_start = band + 1; 1355 else 1356 *band_start = 0; 1357 1358 /* if bands & channels are done, continue outside */ 1359 if (*band_start == 0 && *chan_start == 0) 1360 (*split_start)++; 1361 if (split) 1362 break; 1363 case 4: 1364 nl_cmds = nla_nest_start(msg, NL80211_ATTR_SUPPORTED_COMMANDS); 1365 if (!nl_cmds) 1366 goto nla_put_failure; 1367 1368 i = 0; 1369 #define CMD(op, n) \ 1370 do { \ 1371 if (dev->ops->op) { \ 1372 i++; \ 1373 if (nla_put_u32(msg, i, NL80211_CMD_ ## n)) \ 1374 goto nla_put_failure; \ 1375 } \ 1376 } while (0) 1377 1378 CMD(add_virtual_intf, NEW_INTERFACE); 1379 CMD(change_virtual_intf, SET_INTERFACE); 1380 CMD(add_key, NEW_KEY); 1381 CMD(start_ap, START_AP); 1382 CMD(add_station, NEW_STATION); 1383 CMD(add_mpath, NEW_MPATH); 1384 CMD(update_mesh_config, SET_MESH_CONFIG); 1385 CMD(change_bss, SET_BSS); 1386 CMD(auth, AUTHENTICATE); 1387 CMD(assoc, ASSOCIATE); 1388 CMD(deauth, DEAUTHENTICATE); 1389 CMD(disassoc, DISASSOCIATE); 1390 CMD(join_ibss, JOIN_IBSS); 1391 CMD(join_mesh, JOIN_MESH); 1392 CMD(set_pmksa, SET_PMKSA); 1393 CMD(del_pmksa, DEL_PMKSA); 1394 CMD(flush_pmksa, FLUSH_PMKSA); 1395 if (dev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL) 1396 CMD(remain_on_channel, REMAIN_ON_CHANNEL); 1397 CMD(set_bitrate_mask, SET_TX_BITRATE_MASK); 1398 CMD(mgmt_tx, FRAME); 1399 CMD(mgmt_tx_cancel_wait, FRAME_WAIT_CANCEL); 1400 if (dev->wiphy.flags & WIPHY_FLAG_NETNS_OK) { 1401 i++; 1402 if (nla_put_u32(msg, i, NL80211_CMD_SET_WIPHY_NETNS)) 1403 goto nla_put_failure; 1404 } 1405 if (dev->ops->set_monitor_channel || dev->ops->start_ap || 1406 dev->ops->join_mesh) { 1407 i++; 1408 if (nla_put_u32(msg, i, NL80211_CMD_SET_CHANNEL)) 1409 goto nla_put_failure; 1410 } 1411 CMD(set_wds_peer, SET_WDS_PEER); 1412 if (dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) { 1413 CMD(tdls_mgmt, TDLS_MGMT); 1414 CMD(tdls_oper, TDLS_OPER); 1415 } 1416 if (dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) 1417 CMD(sched_scan_start, START_SCHED_SCAN); 1418 CMD(probe_client, PROBE_CLIENT); 1419 CMD(set_noack_map, SET_NOACK_MAP); 1420 if (dev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS) { 1421 i++; 1422 if (nla_put_u32(msg, i, NL80211_CMD_REGISTER_BEACONS)) 1423 goto nla_put_failure; 1424 } 1425 CMD(start_p2p_device, START_P2P_DEVICE); 1426 CMD(set_mcast_rate, SET_MCAST_RATE); 1427 if (split) { 1428 CMD(crit_proto_start, CRIT_PROTOCOL_START); 1429 CMD(crit_proto_stop, CRIT_PROTOCOL_STOP); 1430 } 1431 1432 #ifdef CONFIG_NL80211_TESTMODE 1433 CMD(testmode_cmd, TESTMODE); 1434 #endif 1435 1436 #undef CMD 1437 1438 if (dev->ops->connect || dev->ops->auth) { 1439 i++; 1440 if (nla_put_u32(msg, i, NL80211_CMD_CONNECT)) 1441 goto nla_put_failure; 1442 } 1443 1444 if (dev->ops->disconnect || dev->ops->deauth) { 1445 i++; 1446 if (nla_put_u32(msg, i, NL80211_CMD_DISCONNECT)) 1447 goto nla_put_failure; 1448 } 1449 1450 nla_nest_end(msg, nl_cmds); 1451 (*split_start)++; 1452 if (split) 1453 break; 1454 case 5: 1455 if (dev->ops->remain_on_channel && 1456 (dev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL) && 1457 nla_put_u32(msg, 1458 NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION, 1459 dev->wiphy.max_remain_on_channel_duration)) 1460 goto nla_put_failure; 1461 1462 if ((dev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX) && 1463 nla_put_flag(msg, NL80211_ATTR_OFFCHANNEL_TX_OK)) 1464 goto nla_put_failure; 1465 1466 if (nl80211_send_mgmt_stypes(msg, mgmt_stypes)) 1467 goto nla_put_failure; 1468 (*split_start)++; 1469 if (split) 1470 break; 1471 case 6: 1472 #ifdef CONFIG_PM 1473 if (nl80211_send_wowlan(msg, dev, split)) 1474 goto nla_put_failure; 1475 (*split_start)++; 1476 if (split) 1477 break; 1478 #else 1479 (*split_start)++; 1480 #endif 1481 case 7: 1482 if (nl80211_put_iftypes(msg, NL80211_ATTR_SOFTWARE_IFTYPES, 1483 dev->wiphy.software_iftypes)) 1484 goto nla_put_failure; 1485 1486 if (nl80211_put_iface_combinations(&dev->wiphy, msg, split)) 1487 goto nla_put_failure; 1488 1489 (*split_start)++; 1490 if (split) 1491 break; 1492 case 8: 1493 if ((dev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME) && 1494 nla_put_u32(msg, NL80211_ATTR_DEVICE_AP_SME, 1495 dev->wiphy.ap_sme_capa)) 1496 goto nla_put_failure; 1497 1498 features = dev->wiphy.features; 1499 /* 1500 * We can only add the per-channel limit information if the 1501 * dump is split, otherwise it makes it too big. Therefore 1502 * only advertise it in that case. 1503 */ 1504 if (split) 1505 features |= NL80211_FEATURE_ADVERTISE_CHAN_LIMITS; 1506 if (nla_put_u32(msg, NL80211_ATTR_FEATURE_FLAGS, features)) 1507 goto nla_put_failure; 1508 1509 if (dev->wiphy.ht_capa_mod_mask && 1510 nla_put(msg, NL80211_ATTR_HT_CAPABILITY_MASK, 1511 sizeof(*dev->wiphy.ht_capa_mod_mask), 1512 dev->wiphy.ht_capa_mod_mask)) 1513 goto nla_put_failure; 1514 1515 if (dev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME && 1516 dev->wiphy.max_acl_mac_addrs && 1517 nla_put_u32(msg, NL80211_ATTR_MAC_ACL_MAX, 1518 dev->wiphy.max_acl_mac_addrs)) 1519 goto nla_put_failure; 1520 1521 /* 1522 * Any information below this point is only available to 1523 * applications that can deal with it being split. This 1524 * helps ensure that newly added capabilities don't break 1525 * older tools by overrunning their buffers. 1526 * 1527 * We still increment split_start so that in the split 1528 * case we'll continue with more data in the next round, 1529 * but break unconditionally so unsplit data stops here. 1530 */ 1531 (*split_start)++; 1532 break; 1533 case 9: 1534 if (dev->wiphy.extended_capabilities && 1535 (nla_put(msg, NL80211_ATTR_EXT_CAPA, 1536 dev->wiphy.extended_capabilities_len, 1537 dev->wiphy.extended_capabilities) || 1538 nla_put(msg, NL80211_ATTR_EXT_CAPA_MASK, 1539 dev->wiphy.extended_capabilities_len, 1540 dev->wiphy.extended_capabilities_mask))) 1541 goto nla_put_failure; 1542 1543 if (dev->wiphy.vht_capa_mod_mask && 1544 nla_put(msg, NL80211_ATTR_VHT_CAPABILITY_MASK, 1545 sizeof(*dev->wiphy.vht_capa_mod_mask), 1546 dev->wiphy.vht_capa_mod_mask)) 1547 goto nla_put_failure; 1548 1549 /* done */ 1550 *split_start = 0; 1551 break; 1552 } 1553 return genlmsg_end(msg, hdr); 1554 1555 nla_put_failure: 1556 genlmsg_cancel(msg, hdr); 1557 return -EMSGSIZE; 1558 } 1559 1560 static int nl80211_dump_wiphy(struct sk_buff *skb, struct netlink_callback *cb) 1561 { 1562 int idx = 0, ret; 1563 int start = cb->args[0]; 1564 struct cfg80211_registered_device *dev; 1565 s64 filter_wiphy = -1; 1566 bool split = false; 1567 struct nlattr **tb = nl80211_fam.attrbuf; 1568 int res; 1569 1570 mutex_lock(&cfg80211_mutex); 1571 res = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize, 1572 tb, nl80211_fam.maxattr, nl80211_policy); 1573 if (res == 0) { 1574 split = tb[NL80211_ATTR_SPLIT_WIPHY_DUMP]; 1575 if (tb[NL80211_ATTR_WIPHY]) 1576 filter_wiphy = nla_get_u32(tb[NL80211_ATTR_WIPHY]); 1577 if (tb[NL80211_ATTR_WDEV]) 1578 filter_wiphy = nla_get_u64(tb[NL80211_ATTR_WDEV]) >> 32; 1579 if (tb[NL80211_ATTR_IFINDEX]) { 1580 struct net_device *netdev; 1581 int ifidx = nla_get_u32(tb[NL80211_ATTR_IFINDEX]); 1582 1583 netdev = dev_get_by_index(sock_net(skb->sk), ifidx); 1584 if (!netdev) { 1585 mutex_unlock(&cfg80211_mutex); 1586 return -ENODEV; 1587 } 1588 if (netdev->ieee80211_ptr) { 1589 dev = wiphy_to_dev( 1590 netdev->ieee80211_ptr->wiphy); 1591 filter_wiphy = dev->wiphy_idx; 1592 } 1593 dev_put(netdev); 1594 } 1595 } 1596 1597 list_for_each_entry(dev, &cfg80211_rdev_list, list) { 1598 if (!net_eq(wiphy_net(&dev->wiphy), sock_net(skb->sk))) 1599 continue; 1600 if (++idx <= start) 1601 continue; 1602 if (filter_wiphy != -1 && dev->wiphy_idx != filter_wiphy) 1603 continue; 1604 /* attempt to fit multiple wiphy data chunks into the skb */ 1605 do { 1606 ret = nl80211_send_wiphy(dev, skb, 1607 NETLINK_CB(cb->skb).portid, 1608 cb->nlh->nlmsg_seq, 1609 NLM_F_MULTI, 1610 split, &cb->args[1], 1611 &cb->args[2], 1612 &cb->args[3]); 1613 if (ret < 0) { 1614 /* 1615 * If sending the wiphy data didn't fit (ENOBUFS 1616 * or EMSGSIZE returned), this SKB is still 1617 * empty (so it's not too big because another 1618 * wiphy dataset is already in the skb) and 1619 * we've not tried to adjust the dump allocation 1620 * yet ... then adjust the alloc size to be 1621 * bigger, and return 1 but with the empty skb. 1622 * This results in an empty message being RX'ed 1623 * in userspace, but that is ignored. 1624 * 1625 * We can then retry with the larger buffer. 1626 */ 1627 if ((ret == -ENOBUFS || ret == -EMSGSIZE) && 1628 !skb->len && 1629 cb->min_dump_alloc < 4096) { 1630 cb->min_dump_alloc = 4096; 1631 mutex_unlock(&cfg80211_mutex); 1632 return 1; 1633 } 1634 idx--; 1635 break; 1636 } 1637 } while (cb->args[1] > 0); 1638 break; 1639 } 1640 mutex_unlock(&cfg80211_mutex); 1641 1642 cb->args[0] = idx; 1643 1644 return skb->len; 1645 } 1646 1647 static int nl80211_get_wiphy(struct sk_buff *skb, struct genl_info *info) 1648 { 1649 struct sk_buff *msg; 1650 struct cfg80211_registered_device *dev = info->user_ptr[0]; 1651 1652 msg = nlmsg_new(4096, GFP_KERNEL); 1653 if (!msg) 1654 return -ENOMEM; 1655 1656 if (nl80211_send_wiphy(dev, msg, info->snd_portid, info->snd_seq, 0, 1657 false, NULL, NULL, NULL) < 0) { 1658 nlmsg_free(msg); 1659 return -ENOBUFS; 1660 } 1661 1662 return genlmsg_reply(msg, info); 1663 } 1664 1665 static const struct nla_policy txq_params_policy[NL80211_TXQ_ATTR_MAX + 1] = { 1666 [NL80211_TXQ_ATTR_QUEUE] = { .type = NLA_U8 }, 1667 [NL80211_TXQ_ATTR_TXOP] = { .type = NLA_U16 }, 1668 [NL80211_TXQ_ATTR_CWMIN] = { .type = NLA_U16 }, 1669 [NL80211_TXQ_ATTR_CWMAX] = { .type = NLA_U16 }, 1670 [NL80211_TXQ_ATTR_AIFS] = { .type = NLA_U8 }, 1671 }; 1672 1673 static int parse_txq_params(struct nlattr *tb[], 1674 struct ieee80211_txq_params *txq_params) 1675 { 1676 if (!tb[NL80211_TXQ_ATTR_AC] || !tb[NL80211_TXQ_ATTR_TXOP] || 1677 !tb[NL80211_TXQ_ATTR_CWMIN] || !tb[NL80211_TXQ_ATTR_CWMAX] || 1678 !tb[NL80211_TXQ_ATTR_AIFS]) 1679 return -EINVAL; 1680 1681 txq_params->ac = nla_get_u8(tb[NL80211_TXQ_ATTR_AC]); 1682 txq_params->txop = nla_get_u16(tb[NL80211_TXQ_ATTR_TXOP]); 1683 txq_params->cwmin = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMIN]); 1684 txq_params->cwmax = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMAX]); 1685 txq_params->aifs = nla_get_u8(tb[NL80211_TXQ_ATTR_AIFS]); 1686 1687 if (txq_params->ac >= NL80211_NUM_ACS) 1688 return -EINVAL; 1689 1690 return 0; 1691 } 1692 1693 static bool nl80211_can_set_dev_channel(struct wireless_dev *wdev) 1694 { 1695 /* 1696 * You can only set the channel explicitly for WDS interfaces, 1697 * all others have their channel managed via their respective 1698 * "establish a connection" command (connect, join, ...) 1699 * 1700 * For AP/GO and mesh mode, the channel can be set with the 1701 * channel userspace API, but is only stored and passed to the 1702 * low-level driver when the AP starts or the mesh is joined. 1703 * This is for backward compatibility, userspace can also give 1704 * the channel in the start-ap or join-mesh commands instead. 1705 * 1706 * Monitors are special as they are normally slaved to 1707 * whatever else is going on, so they have their own special 1708 * operation to set the monitor channel if possible. 1709 */ 1710 return !wdev || 1711 wdev->iftype == NL80211_IFTYPE_AP || 1712 wdev->iftype == NL80211_IFTYPE_MESH_POINT || 1713 wdev->iftype == NL80211_IFTYPE_MONITOR || 1714 wdev->iftype == NL80211_IFTYPE_P2P_GO; 1715 } 1716 1717 static int nl80211_parse_chandef(struct cfg80211_registered_device *rdev, 1718 struct genl_info *info, 1719 struct cfg80211_chan_def *chandef) 1720 { 1721 u32 control_freq; 1722 1723 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ]) 1724 return -EINVAL; 1725 1726 control_freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]); 1727 1728 chandef->chan = ieee80211_get_channel(&rdev->wiphy, control_freq); 1729 chandef->width = NL80211_CHAN_WIDTH_20_NOHT; 1730 chandef->center_freq1 = control_freq; 1731 chandef->center_freq2 = 0; 1732 1733 /* Primary channel not allowed */ 1734 if (!chandef->chan || chandef->chan->flags & IEEE80211_CHAN_DISABLED) 1735 return -EINVAL; 1736 1737 if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) { 1738 enum nl80211_channel_type chantype; 1739 1740 chantype = nla_get_u32( 1741 info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]); 1742 1743 switch (chantype) { 1744 case NL80211_CHAN_NO_HT: 1745 case NL80211_CHAN_HT20: 1746 case NL80211_CHAN_HT40PLUS: 1747 case NL80211_CHAN_HT40MINUS: 1748 cfg80211_chandef_create(chandef, chandef->chan, 1749 chantype); 1750 break; 1751 default: 1752 return -EINVAL; 1753 } 1754 } else if (info->attrs[NL80211_ATTR_CHANNEL_WIDTH]) { 1755 chandef->width = 1756 nla_get_u32(info->attrs[NL80211_ATTR_CHANNEL_WIDTH]); 1757 if (info->attrs[NL80211_ATTR_CENTER_FREQ1]) 1758 chandef->center_freq1 = 1759 nla_get_u32( 1760 info->attrs[NL80211_ATTR_CENTER_FREQ1]); 1761 if (info->attrs[NL80211_ATTR_CENTER_FREQ2]) 1762 chandef->center_freq2 = 1763 nla_get_u32( 1764 info->attrs[NL80211_ATTR_CENTER_FREQ2]); 1765 } 1766 1767 if (!cfg80211_chandef_valid(chandef)) 1768 return -EINVAL; 1769 1770 if (!cfg80211_chandef_usable(&rdev->wiphy, chandef, 1771 IEEE80211_CHAN_DISABLED)) 1772 return -EINVAL; 1773 1774 return 0; 1775 } 1776 1777 static int __nl80211_set_channel(struct cfg80211_registered_device *rdev, 1778 struct wireless_dev *wdev, 1779 struct genl_info *info) 1780 { 1781 struct cfg80211_chan_def chandef; 1782 int result; 1783 enum nl80211_iftype iftype = NL80211_IFTYPE_MONITOR; 1784 1785 if (wdev) 1786 iftype = wdev->iftype; 1787 1788 if (!nl80211_can_set_dev_channel(wdev)) 1789 return -EOPNOTSUPP; 1790 1791 result = nl80211_parse_chandef(rdev, info, &chandef); 1792 if (result) 1793 return result; 1794 1795 mutex_lock(&rdev->devlist_mtx); 1796 switch (iftype) { 1797 case NL80211_IFTYPE_AP: 1798 case NL80211_IFTYPE_P2P_GO: 1799 if (wdev->beacon_interval) { 1800 result = -EBUSY; 1801 break; 1802 } 1803 if (!cfg80211_reg_can_beacon(&rdev->wiphy, &chandef)) { 1804 result = -EINVAL; 1805 break; 1806 } 1807 wdev->preset_chandef = chandef; 1808 result = 0; 1809 break; 1810 case NL80211_IFTYPE_MESH_POINT: 1811 result = cfg80211_set_mesh_channel(rdev, wdev, &chandef); 1812 break; 1813 case NL80211_IFTYPE_MONITOR: 1814 result = cfg80211_set_monitor_channel(rdev, &chandef); 1815 break; 1816 default: 1817 result = -EINVAL; 1818 } 1819 mutex_unlock(&rdev->devlist_mtx); 1820 1821 return result; 1822 } 1823 1824 static int nl80211_set_channel(struct sk_buff *skb, struct genl_info *info) 1825 { 1826 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 1827 struct net_device *netdev = info->user_ptr[1]; 1828 1829 return __nl80211_set_channel(rdev, netdev->ieee80211_ptr, info); 1830 } 1831 1832 static int nl80211_set_wds_peer(struct sk_buff *skb, struct genl_info *info) 1833 { 1834 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 1835 struct net_device *dev = info->user_ptr[1]; 1836 struct wireless_dev *wdev = dev->ieee80211_ptr; 1837 const u8 *bssid; 1838 1839 if (!info->attrs[NL80211_ATTR_MAC]) 1840 return -EINVAL; 1841 1842 if (netif_running(dev)) 1843 return -EBUSY; 1844 1845 if (!rdev->ops->set_wds_peer) 1846 return -EOPNOTSUPP; 1847 1848 if (wdev->iftype != NL80211_IFTYPE_WDS) 1849 return -EOPNOTSUPP; 1850 1851 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]); 1852 return rdev_set_wds_peer(rdev, dev, bssid); 1853 } 1854 1855 1856 static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info) 1857 { 1858 struct cfg80211_registered_device *rdev; 1859 struct net_device *netdev = NULL; 1860 struct wireless_dev *wdev; 1861 int result = 0, rem_txq_params = 0; 1862 struct nlattr *nl_txq_params; 1863 u32 changed; 1864 u8 retry_short = 0, retry_long = 0; 1865 u32 frag_threshold = 0, rts_threshold = 0; 1866 u8 coverage_class = 0; 1867 1868 /* 1869 * Try to find the wiphy and netdev. Normally this 1870 * function shouldn't need the netdev, but this is 1871 * done for backward compatibility -- previously 1872 * setting the channel was done per wiphy, but now 1873 * it is per netdev. Previous userland like hostapd 1874 * also passed a netdev to set_wiphy, so that it is 1875 * possible to let that go to the right netdev! 1876 */ 1877 mutex_lock(&cfg80211_mutex); 1878 1879 if (info->attrs[NL80211_ATTR_IFINDEX]) { 1880 int ifindex = nla_get_u32(info->attrs[NL80211_ATTR_IFINDEX]); 1881 1882 netdev = dev_get_by_index(genl_info_net(info), ifindex); 1883 if (netdev && netdev->ieee80211_ptr) { 1884 rdev = wiphy_to_dev(netdev->ieee80211_ptr->wiphy); 1885 mutex_lock(&rdev->mtx); 1886 } else 1887 netdev = NULL; 1888 } 1889 1890 if (!netdev) { 1891 rdev = __cfg80211_rdev_from_attrs(genl_info_net(info), 1892 info->attrs); 1893 if (IS_ERR(rdev)) { 1894 mutex_unlock(&cfg80211_mutex); 1895 return PTR_ERR(rdev); 1896 } 1897 wdev = NULL; 1898 netdev = NULL; 1899 result = 0; 1900 1901 mutex_lock(&rdev->mtx); 1902 } else 1903 wdev = netdev->ieee80211_ptr; 1904 1905 /* 1906 * end workaround code, by now the rdev is available 1907 * and locked, and wdev may or may not be NULL. 1908 */ 1909 1910 if (info->attrs[NL80211_ATTR_WIPHY_NAME]) 1911 result = cfg80211_dev_rename( 1912 rdev, nla_data(info->attrs[NL80211_ATTR_WIPHY_NAME])); 1913 1914 mutex_unlock(&cfg80211_mutex); 1915 1916 if (result) 1917 goto bad_res; 1918 1919 if (info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS]) { 1920 struct ieee80211_txq_params txq_params; 1921 struct nlattr *tb[NL80211_TXQ_ATTR_MAX + 1]; 1922 1923 if (!rdev->ops->set_txq_params) { 1924 result = -EOPNOTSUPP; 1925 goto bad_res; 1926 } 1927 1928 if (!netdev) { 1929 result = -EINVAL; 1930 goto bad_res; 1931 } 1932 1933 if (netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP && 1934 netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) { 1935 result = -EINVAL; 1936 goto bad_res; 1937 } 1938 1939 if (!netif_running(netdev)) { 1940 result = -ENETDOWN; 1941 goto bad_res; 1942 } 1943 1944 nla_for_each_nested(nl_txq_params, 1945 info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS], 1946 rem_txq_params) { 1947 nla_parse(tb, NL80211_TXQ_ATTR_MAX, 1948 nla_data(nl_txq_params), 1949 nla_len(nl_txq_params), 1950 txq_params_policy); 1951 result = parse_txq_params(tb, &txq_params); 1952 if (result) 1953 goto bad_res; 1954 1955 result = rdev_set_txq_params(rdev, netdev, 1956 &txq_params); 1957 if (result) 1958 goto bad_res; 1959 } 1960 } 1961 1962 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) { 1963 result = __nl80211_set_channel(rdev, 1964 nl80211_can_set_dev_channel(wdev) ? wdev : NULL, 1965 info); 1966 if (result) 1967 goto bad_res; 1968 } 1969 1970 if (info->attrs[NL80211_ATTR_WIPHY_TX_POWER_SETTING]) { 1971 struct wireless_dev *txp_wdev = wdev; 1972 enum nl80211_tx_power_setting type; 1973 int idx, mbm = 0; 1974 1975 if (!(rdev->wiphy.features & NL80211_FEATURE_VIF_TXPOWER)) 1976 txp_wdev = NULL; 1977 1978 if (!rdev->ops->set_tx_power) { 1979 result = -EOPNOTSUPP; 1980 goto bad_res; 1981 } 1982 1983 idx = NL80211_ATTR_WIPHY_TX_POWER_SETTING; 1984 type = nla_get_u32(info->attrs[idx]); 1985 1986 if (!info->attrs[NL80211_ATTR_WIPHY_TX_POWER_LEVEL] && 1987 (type != NL80211_TX_POWER_AUTOMATIC)) { 1988 result = -EINVAL; 1989 goto bad_res; 1990 } 1991 1992 if (type != NL80211_TX_POWER_AUTOMATIC) { 1993 idx = NL80211_ATTR_WIPHY_TX_POWER_LEVEL; 1994 mbm = nla_get_u32(info->attrs[idx]); 1995 } 1996 1997 result = rdev_set_tx_power(rdev, txp_wdev, type, mbm); 1998 if (result) 1999 goto bad_res; 2000 } 2001 2002 if (info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX] && 2003 info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]) { 2004 u32 tx_ant, rx_ant; 2005 if ((!rdev->wiphy.available_antennas_tx && 2006 !rdev->wiphy.available_antennas_rx) || 2007 !rdev->ops->set_antenna) { 2008 result = -EOPNOTSUPP; 2009 goto bad_res; 2010 } 2011 2012 tx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX]); 2013 rx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]); 2014 2015 /* reject antenna configurations which don't match the 2016 * available antenna masks, except for the "all" mask */ 2017 if ((~tx_ant && (tx_ant & ~rdev->wiphy.available_antennas_tx)) || 2018 (~rx_ant && (rx_ant & ~rdev->wiphy.available_antennas_rx))) { 2019 result = -EINVAL; 2020 goto bad_res; 2021 } 2022 2023 tx_ant = tx_ant & rdev->wiphy.available_antennas_tx; 2024 rx_ant = rx_ant & rdev->wiphy.available_antennas_rx; 2025 2026 result = rdev_set_antenna(rdev, tx_ant, rx_ant); 2027 if (result) 2028 goto bad_res; 2029 } 2030 2031 changed = 0; 2032 2033 if (info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]) { 2034 retry_short = nla_get_u8( 2035 info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]); 2036 if (retry_short == 0) { 2037 result = -EINVAL; 2038 goto bad_res; 2039 } 2040 changed |= WIPHY_PARAM_RETRY_SHORT; 2041 } 2042 2043 if (info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]) { 2044 retry_long = nla_get_u8( 2045 info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]); 2046 if (retry_long == 0) { 2047 result = -EINVAL; 2048 goto bad_res; 2049 } 2050 changed |= WIPHY_PARAM_RETRY_LONG; 2051 } 2052 2053 if (info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]) { 2054 frag_threshold = nla_get_u32( 2055 info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]); 2056 if (frag_threshold < 256) { 2057 result = -EINVAL; 2058 goto bad_res; 2059 } 2060 if (frag_threshold != (u32) -1) { 2061 /* 2062 * Fragments (apart from the last one) are required to 2063 * have even length. Make the fragmentation code 2064 * simpler by stripping LSB should someone try to use 2065 * odd threshold value. 2066 */ 2067 frag_threshold &= ~0x1; 2068 } 2069 changed |= WIPHY_PARAM_FRAG_THRESHOLD; 2070 } 2071 2072 if (info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]) { 2073 rts_threshold = nla_get_u32( 2074 info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]); 2075 changed |= WIPHY_PARAM_RTS_THRESHOLD; 2076 } 2077 2078 if (info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]) { 2079 coverage_class = nla_get_u8( 2080 info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]); 2081 changed |= WIPHY_PARAM_COVERAGE_CLASS; 2082 } 2083 2084 if (changed) { 2085 u8 old_retry_short, old_retry_long; 2086 u32 old_frag_threshold, old_rts_threshold; 2087 u8 old_coverage_class; 2088 2089 if (!rdev->ops->set_wiphy_params) { 2090 result = -EOPNOTSUPP; 2091 goto bad_res; 2092 } 2093 2094 old_retry_short = rdev->wiphy.retry_short; 2095 old_retry_long = rdev->wiphy.retry_long; 2096 old_frag_threshold = rdev->wiphy.frag_threshold; 2097 old_rts_threshold = rdev->wiphy.rts_threshold; 2098 old_coverage_class = rdev->wiphy.coverage_class; 2099 2100 if (changed & WIPHY_PARAM_RETRY_SHORT) 2101 rdev->wiphy.retry_short = retry_short; 2102 if (changed & WIPHY_PARAM_RETRY_LONG) 2103 rdev->wiphy.retry_long = retry_long; 2104 if (changed & WIPHY_PARAM_FRAG_THRESHOLD) 2105 rdev->wiphy.frag_threshold = frag_threshold; 2106 if (changed & WIPHY_PARAM_RTS_THRESHOLD) 2107 rdev->wiphy.rts_threshold = rts_threshold; 2108 if (changed & WIPHY_PARAM_COVERAGE_CLASS) 2109 rdev->wiphy.coverage_class = coverage_class; 2110 2111 result = rdev_set_wiphy_params(rdev, changed); 2112 if (result) { 2113 rdev->wiphy.retry_short = old_retry_short; 2114 rdev->wiphy.retry_long = old_retry_long; 2115 rdev->wiphy.frag_threshold = old_frag_threshold; 2116 rdev->wiphy.rts_threshold = old_rts_threshold; 2117 rdev->wiphy.coverage_class = old_coverage_class; 2118 } 2119 } 2120 2121 bad_res: 2122 mutex_unlock(&rdev->mtx); 2123 if (netdev) 2124 dev_put(netdev); 2125 return result; 2126 } 2127 2128 static inline u64 wdev_id(struct wireless_dev *wdev) 2129 { 2130 return (u64)wdev->identifier | 2131 ((u64)wiphy_to_dev(wdev->wiphy)->wiphy_idx << 32); 2132 } 2133 2134 static int nl80211_send_chandef(struct sk_buff *msg, 2135 struct cfg80211_chan_def *chandef) 2136 { 2137 WARN_ON(!cfg80211_chandef_valid(chandef)); 2138 2139 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, 2140 chandef->chan->center_freq)) 2141 return -ENOBUFS; 2142 switch (chandef->width) { 2143 case NL80211_CHAN_WIDTH_20_NOHT: 2144 case NL80211_CHAN_WIDTH_20: 2145 case NL80211_CHAN_WIDTH_40: 2146 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE, 2147 cfg80211_get_chandef_type(chandef))) 2148 return -ENOBUFS; 2149 break; 2150 default: 2151 break; 2152 } 2153 if (nla_put_u32(msg, NL80211_ATTR_CHANNEL_WIDTH, chandef->width)) 2154 return -ENOBUFS; 2155 if (nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ1, chandef->center_freq1)) 2156 return -ENOBUFS; 2157 if (chandef->center_freq2 && 2158 nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ2, chandef->center_freq2)) 2159 return -ENOBUFS; 2160 return 0; 2161 } 2162 2163 static int nl80211_send_iface(struct sk_buff *msg, u32 portid, u32 seq, int flags, 2164 struct cfg80211_registered_device *rdev, 2165 struct wireless_dev *wdev) 2166 { 2167 struct net_device *dev = wdev->netdev; 2168 void *hdr; 2169 2170 hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_INTERFACE); 2171 if (!hdr) 2172 return -1; 2173 2174 if (dev && 2175 (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) || 2176 nla_put_string(msg, NL80211_ATTR_IFNAME, dev->name))) 2177 goto nla_put_failure; 2178 2179 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 2180 nla_put_u32(msg, NL80211_ATTR_IFTYPE, wdev->iftype) || 2181 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) || 2182 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, wdev_address(wdev)) || 2183 nla_put_u32(msg, NL80211_ATTR_GENERATION, 2184 rdev->devlist_generation ^ 2185 (cfg80211_rdev_list_generation << 2))) 2186 goto nla_put_failure; 2187 2188 if (rdev->ops->get_channel) { 2189 int ret; 2190 struct cfg80211_chan_def chandef; 2191 2192 ret = rdev_get_channel(rdev, wdev, &chandef); 2193 if (ret == 0) { 2194 if (nl80211_send_chandef(msg, &chandef)) 2195 goto nla_put_failure; 2196 } 2197 } 2198 2199 if (wdev->ssid_len) { 2200 if (nla_put(msg, NL80211_ATTR_SSID, wdev->ssid_len, wdev->ssid)) 2201 goto nla_put_failure; 2202 } 2203 2204 return genlmsg_end(msg, hdr); 2205 2206 nla_put_failure: 2207 genlmsg_cancel(msg, hdr); 2208 return -EMSGSIZE; 2209 } 2210 2211 static int nl80211_dump_interface(struct sk_buff *skb, struct netlink_callback *cb) 2212 { 2213 int wp_idx = 0; 2214 int if_idx = 0; 2215 int wp_start = cb->args[0]; 2216 int if_start = cb->args[1]; 2217 struct cfg80211_registered_device *rdev; 2218 struct wireless_dev *wdev; 2219 2220 mutex_lock(&cfg80211_mutex); 2221 list_for_each_entry(rdev, &cfg80211_rdev_list, list) { 2222 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk))) 2223 continue; 2224 if (wp_idx < wp_start) { 2225 wp_idx++; 2226 continue; 2227 } 2228 if_idx = 0; 2229 2230 mutex_lock(&rdev->devlist_mtx); 2231 list_for_each_entry(wdev, &rdev->wdev_list, list) { 2232 if (if_idx < if_start) { 2233 if_idx++; 2234 continue; 2235 } 2236 if (nl80211_send_iface(skb, NETLINK_CB(cb->skb).portid, 2237 cb->nlh->nlmsg_seq, NLM_F_MULTI, 2238 rdev, wdev) < 0) { 2239 mutex_unlock(&rdev->devlist_mtx); 2240 goto out; 2241 } 2242 if_idx++; 2243 } 2244 mutex_unlock(&rdev->devlist_mtx); 2245 2246 wp_idx++; 2247 } 2248 out: 2249 mutex_unlock(&cfg80211_mutex); 2250 2251 cb->args[0] = wp_idx; 2252 cb->args[1] = if_idx; 2253 2254 return skb->len; 2255 } 2256 2257 static int nl80211_get_interface(struct sk_buff *skb, struct genl_info *info) 2258 { 2259 struct sk_buff *msg; 2260 struct cfg80211_registered_device *dev = info->user_ptr[0]; 2261 struct wireless_dev *wdev = info->user_ptr[1]; 2262 2263 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 2264 if (!msg) 2265 return -ENOMEM; 2266 2267 if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0, 2268 dev, wdev) < 0) { 2269 nlmsg_free(msg); 2270 return -ENOBUFS; 2271 } 2272 2273 return genlmsg_reply(msg, info); 2274 } 2275 2276 static const struct nla_policy mntr_flags_policy[NL80211_MNTR_FLAG_MAX + 1] = { 2277 [NL80211_MNTR_FLAG_FCSFAIL] = { .type = NLA_FLAG }, 2278 [NL80211_MNTR_FLAG_PLCPFAIL] = { .type = NLA_FLAG }, 2279 [NL80211_MNTR_FLAG_CONTROL] = { .type = NLA_FLAG }, 2280 [NL80211_MNTR_FLAG_OTHER_BSS] = { .type = NLA_FLAG }, 2281 [NL80211_MNTR_FLAG_COOK_FRAMES] = { .type = NLA_FLAG }, 2282 }; 2283 2284 static int parse_monitor_flags(struct nlattr *nla, u32 *mntrflags) 2285 { 2286 struct nlattr *flags[NL80211_MNTR_FLAG_MAX + 1]; 2287 int flag; 2288 2289 *mntrflags = 0; 2290 2291 if (!nla) 2292 return -EINVAL; 2293 2294 if (nla_parse_nested(flags, NL80211_MNTR_FLAG_MAX, 2295 nla, mntr_flags_policy)) 2296 return -EINVAL; 2297 2298 for (flag = 1; flag <= NL80211_MNTR_FLAG_MAX; flag++) 2299 if (flags[flag]) 2300 *mntrflags |= (1<<flag); 2301 2302 return 0; 2303 } 2304 2305 static int nl80211_valid_4addr(struct cfg80211_registered_device *rdev, 2306 struct net_device *netdev, u8 use_4addr, 2307 enum nl80211_iftype iftype) 2308 { 2309 if (!use_4addr) { 2310 if (netdev && (netdev->priv_flags & IFF_BRIDGE_PORT)) 2311 return -EBUSY; 2312 return 0; 2313 } 2314 2315 switch (iftype) { 2316 case NL80211_IFTYPE_AP_VLAN: 2317 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_AP) 2318 return 0; 2319 break; 2320 case NL80211_IFTYPE_STATION: 2321 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_STATION) 2322 return 0; 2323 break; 2324 default: 2325 break; 2326 } 2327 2328 return -EOPNOTSUPP; 2329 } 2330 2331 static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info) 2332 { 2333 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 2334 struct vif_params params; 2335 int err; 2336 enum nl80211_iftype otype, ntype; 2337 struct net_device *dev = info->user_ptr[1]; 2338 u32 _flags, *flags = NULL; 2339 bool change = false; 2340 2341 memset(¶ms, 0, sizeof(params)); 2342 2343 otype = ntype = dev->ieee80211_ptr->iftype; 2344 2345 if (info->attrs[NL80211_ATTR_IFTYPE]) { 2346 ntype = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]); 2347 if (otype != ntype) 2348 change = true; 2349 if (ntype > NL80211_IFTYPE_MAX) 2350 return -EINVAL; 2351 } 2352 2353 if (info->attrs[NL80211_ATTR_MESH_ID]) { 2354 struct wireless_dev *wdev = dev->ieee80211_ptr; 2355 2356 if (ntype != NL80211_IFTYPE_MESH_POINT) 2357 return -EINVAL; 2358 if (netif_running(dev)) 2359 return -EBUSY; 2360 2361 wdev_lock(wdev); 2362 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN != 2363 IEEE80211_MAX_MESH_ID_LEN); 2364 wdev->mesh_id_up_len = 2365 nla_len(info->attrs[NL80211_ATTR_MESH_ID]); 2366 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]), 2367 wdev->mesh_id_up_len); 2368 wdev_unlock(wdev); 2369 } 2370 2371 if (info->attrs[NL80211_ATTR_4ADDR]) { 2372 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]); 2373 change = true; 2374 err = nl80211_valid_4addr(rdev, dev, params.use_4addr, ntype); 2375 if (err) 2376 return err; 2377 } else { 2378 params.use_4addr = -1; 2379 } 2380 2381 if (info->attrs[NL80211_ATTR_MNTR_FLAGS]) { 2382 if (ntype != NL80211_IFTYPE_MONITOR) 2383 return -EINVAL; 2384 err = parse_monitor_flags(info->attrs[NL80211_ATTR_MNTR_FLAGS], 2385 &_flags); 2386 if (err) 2387 return err; 2388 2389 flags = &_flags; 2390 change = true; 2391 } 2392 2393 if (change) 2394 err = cfg80211_change_iface(rdev, dev, ntype, flags, ¶ms); 2395 else 2396 err = 0; 2397 2398 if (!err && params.use_4addr != -1) 2399 dev->ieee80211_ptr->use_4addr = params.use_4addr; 2400 2401 return err; 2402 } 2403 2404 static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info) 2405 { 2406 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 2407 struct vif_params params; 2408 struct wireless_dev *wdev; 2409 struct sk_buff *msg; 2410 int err; 2411 enum nl80211_iftype type = NL80211_IFTYPE_UNSPECIFIED; 2412 u32 flags; 2413 2414 memset(¶ms, 0, sizeof(params)); 2415 2416 if (!info->attrs[NL80211_ATTR_IFNAME]) 2417 return -EINVAL; 2418 2419 if (info->attrs[NL80211_ATTR_IFTYPE]) { 2420 type = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]); 2421 if (type > NL80211_IFTYPE_MAX) 2422 return -EINVAL; 2423 } 2424 2425 if (!rdev->ops->add_virtual_intf || 2426 !(rdev->wiphy.interface_modes & (1 << type))) 2427 return -EOPNOTSUPP; 2428 2429 if (type == NL80211_IFTYPE_P2P_DEVICE && info->attrs[NL80211_ATTR_MAC]) { 2430 nla_memcpy(params.macaddr, info->attrs[NL80211_ATTR_MAC], 2431 ETH_ALEN); 2432 if (!is_valid_ether_addr(params.macaddr)) 2433 return -EADDRNOTAVAIL; 2434 } 2435 2436 if (info->attrs[NL80211_ATTR_4ADDR]) { 2437 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]); 2438 err = nl80211_valid_4addr(rdev, NULL, params.use_4addr, type); 2439 if (err) 2440 return err; 2441 } 2442 2443 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 2444 if (!msg) 2445 return -ENOMEM; 2446 2447 err = parse_monitor_flags(type == NL80211_IFTYPE_MONITOR ? 2448 info->attrs[NL80211_ATTR_MNTR_FLAGS] : NULL, 2449 &flags); 2450 wdev = rdev_add_virtual_intf(rdev, 2451 nla_data(info->attrs[NL80211_ATTR_IFNAME]), 2452 type, err ? NULL : &flags, ¶ms); 2453 if (IS_ERR(wdev)) { 2454 nlmsg_free(msg); 2455 return PTR_ERR(wdev); 2456 } 2457 2458 switch (type) { 2459 case NL80211_IFTYPE_MESH_POINT: 2460 if (!info->attrs[NL80211_ATTR_MESH_ID]) 2461 break; 2462 wdev_lock(wdev); 2463 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN != 2464 IEEE80211_MAX_MESH_ID_LEN); 2465 wdev->mesh_id_up_len = 2466 nla_len(info->attrs[NL80211_ATTR_MESH_ID]); 2467 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]), 2468 wdev->mesh_id_up_len); 2469 wdev_unlock(wdev); 2470 break; 2471 case NL80211_IFTYPE_P2P_DEVICE: 2472 /* 2473 * P2P Device doesn't have a netdev, so doesn't go 2474 * through the netdev notifier and must be added here 2475 */ 2476 mutex_init(&wdev->mtx); 2477 INIT_LIST_HEAD(&wdev->event_list); 2478 spin_lock_init(&wdev->event_lock); 2479 INIT_LIST_HEAD(&wdev->mgmt_registrations); 2480 spin_lock_init(&wdev->mgmt_registrations_lock); 2481 2482 mutex_lock(&rdev->devlist_mtx); 2483 wdev->identifier = ++rdev->wdev_id; 2484 list_add_rcu(&wdev->list, &rdev->wdev_list); 2485 rdev->devlist_generation++; 2486 mutex_unlock(&rdev->devlist_mtx); 2487 break; 2488 default: 2489 break; 2490 } 2491 2492 if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0, 2493 rdev, wdev) < 0) { 2494 nlmsg_free(msg); 2495 return -ENOBUFS; 2496 } 2497 2498 return genlmsg_reply(msg, info); 2499 } 2500 2501 static int nl80211_del_interface(struct sk_buff *skb, struct genl_info *info) 2502 { 2503 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 2504 struct wireless_dev *wdev = info->user_ptr[1]; 2505 2506 if (!rdev->ops->del_virtual_intf) 2507 return -EOPNOTSUPP; 2508 2509 /* 2510 * If we remove a wireless device without a netdev then clear 2511 * user_ptr[1] so that nl80211_post_doit won't dereference it 2512 * to check if it needs to do dev_put(). Otherwise it crashes 2513 * since the wdev has been freed, unlike with a netdev where 2514 * we need the dev_put() for the netdev to really be freed. 2515 */ 2516 if (!wdev->netdev) 2517 info->user_ptr[1] = NULL; 2518 2519 return rdev_del_virtual_intf(rdev, wdev); 2520 } 2521 2522 static int nl80211_set_noack_map(struct sk_buff *skb, struct genl_info *info) 2523 { 2524 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 2525 struct net_device *dev = info->user_ptr[1]; 2526 u16 noack_map; 2527 2528 if (!info->attrs[NL80211_ATTR_NOACK_MAP]) 2529 return -EINVAL; 2530 2531 if (!rdev->ops->set_noack_map) 2532 return -EOPNOTSUPP; 2533 2534 noack_map = nla_get_u16(info->attrs[NL80211_ATTR_NOACK_MAP]); 2535 2536 return rdev_set_noack_map(rdev, dev, noack_map); 2537 } 2538 2539 struct get_key_cookie { 2540 struct sk_buff *msg; 2541 int error; 2542 int idx; 2543 }; 2544 2545 static void get_key_callback(void *c, struct key_params *params) 2546 { 2547 struct nlattr *key; 2548 struct get_key_cookie *cookie = c; 2549 2550 if ((params->key && 2551 nla_put(cookie->msg, NL80211_ATTR_KEY_DATA, 2552 params->key_len, params->key)) || 2553 (params->seq && 2554 nla_put(cookie->msg, NL80211_ATTR_KEY_SEQ, 2555 params->seq_len, params->seq)) || 2556 (params->cipher && 2557 nla_put_u32(cookie->msg, NL80211_ATTR_KEY_CIPHER, 2558 params->cipher))) 2559 goto nla_put_failure; 2560 2561 key = nla_nest_start(cookie->msg, NL80211_ATTR_KEY); 2562 if (!key) 2563 goto nla_put_failure; 2564 2565 if ((params->key && 2566 nla_put(cookie->msg, NL80211_KEY_DATA, 2567 params->key_len, params->key)) || 2568 (params->seq && 2569 nla_put(cookie->msg, NL80211_KEY_SEQ, 2570 params->seq_len, params->seq)) || 2571 (params->cipher && 2572 nla_put_u32(cookie->msg, NL80211_KEY_CIPHER, 2573 params->cipher))) 2574 goto nla_put_failure; 2575 2576 if (nla_put_u8(cookie->msg, NL80211_ATTR_KEY_IDX, cookie->idx)) 2577 goto nla_put_failure; 2578 2579 nla_nest_end(cookie->msg, key); 2580 2581 return; 2582 nla_put_failure: 2583 cookie->error = 1; 2584 } 2585 2586 static int nl80211_get_key(struct sk_buff *skb, struct genl_info *info) 2587 { 2588 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 2589 int err; 2590 struct net_device *dev = info->user_ptr[1]; 2591 u8 key_idx = 0; 2592 const u8 *mac_addr = NULL; 2593 bool pairwise; 2594 struct get_key_cookie cookie = { 2595 .error = 0, 2596 }; 2597 void *hdr; 2598 struct sk_buff *msg; 2599 2600 if (info->attrs[NL80211_ATTR_KEY_IDX]) 2601 key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]); 2602 2603 if (key_idx > 5) 2604 return -EINVAL; 2605 2606 if (info->attrs[NL80211_ATTR_MAC]) 2607 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]); 2608 2609 pairwise = !!mac_addr; 2610 if (info->attrs[NL80211_ATTR_KEY_TYPE]) { 2611 u32 kt = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]); 2612 if (kt >= NUM_NL80211_KEYTYPES) 2613 return -EINVAL; 2614 if (kt != NL80211_KEYTYPE_GROUP && 2615 kt != NL80211_KEYTYPE_PAIRWISE) 2616 return -EINVAL; 2617 pairwise = kt == NL80211_KEYTYPE_PAIRWISE; 2618 } 2619 2620 if (!rdev->ops->get_key) 2621 return -EOPNOTSUPP; 2622 2623 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 2624 if (!msg) 2625 return -ENOMEM; 2626 2627 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0, 2628 NL80211_CMD_NEW_KEY); 2629 if (IS_ERR(hdr)) 2630 return PTR_ERR(hdr); 2631 2632 cookie.msg = msg; 2633 cookie.idx = key_idx; 2634 2635 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) || 2636 nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_idx)) 2637 goto nla_put_failure; 2638 if (mac_addr && 2639 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr)) 2640 goto nla_put_failure; 2641 2642 if (pairwise && mac_addr && 2643 !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN)) 2644 return -ENOENT; 2645 2646 err = rdev_get_key(rdev, dev, key_idx, pairwise, mac_addr, &cookie, 2647 get_key_callback); 2648 2649 if (err) 2650 goto free_msg; 2651 2652 if (cookie.error) 2653 goto nla_put_failure; 2654 2655 genlmsg_end(msg, hdr); 2656 return genlmsg_reply(msg, info); 2657 2658 nla_put_failure: 2659 err = -ENOBUFS; 2660 free_msg: 2661 nlmsg_free(msg); 2662 return err; 2663 } 2664 2665 static int nl80211_set_key(struct sk_buff *skb, struct genl_info *info) 2666 { 2667 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 2668 struct key_parse key; 2669 int err; 2670 struct net_device *dev = info->user_ptr[1]; 2671 2672 err = nl80211_parse_key(info, &key); 2673 if (err) 2674 return err; 2675 2676 if (key.idx < 0) 2677 return -EINVAL; 2678 2679 /* only support setting default key */ 2680 if (!key.def && !key.defmgmt) 2681 return -EINVAL; 2682 2683 wdev_lock(dev->ieee80211_ptr); 2684 2685 if (key.def) { 2686 if (!rdev->ops->set_default_key) { 2687 err = -EOPNOTSUPP; 2688 goto out; 2689 } 2690 2691 err = nl80211_key_allowed(dev->ieee80211_ptr); 2692 if (err) 2693 goto out; 2694 2695 err = rdev_set_default_key(rdev, dev, key.idx, 2696 key.def_uni, key.def_multi); 2697 2698 if (err) 2699 goto out; 2700 2701 #ifdef CONFIG_CFG80211_WEXT 2702 dev->ieee80211_ptr->wext.default_key = key.idx; 2703 #endif 2704 } else { 2705 if (key.def_uni || !key.def_multi) { 2706 err = -EINVAL; 2707 goto out; 2708 } 2709 2710 if (!rdev->ops->set_default_mgmt_key) { 2711 err = -EOPNOTSUPP; 2712 goto out; 2713 } 2714 2715 err = nl80211_key_allowed(dev->ieee80211_ptr); 2716 if (err) 2717 goto out; 2718 2719 err = rdev_set_default_mgmt_key(rdev, dev, key.idx); 2720 if (err) 2721 goto out; 2722 2723 #ifdef CONFIG_CFG80211_WEXT 2724 dev->ieee80211_ptr->wext.default_mgmt_key = key.idx; 2725 #endif 2726 } 2727 2728 out: 2729 wdev_unlock(dev->ieee80211_ptr); 2730 2731 return err; 2732 } 2733 2734 static int nl80211_new_key(struct sk_buff *skb, struct genl_info *info) 2735 { 2736 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 2737 int err; 2738 struct net_device *dev = info->user_ptr[1]; 2739 struct key_parse key; 2740 const u8 *mac_addr = NULL; 2741 2742 err = nl80211_parse_key(info, &key); 2743 if (err) 2744 return err; 2745 2746 if (!key.p.key) 2747 return -EINVAL; 2748 2749 if (info->attrs[NL80211_ATTR_MAC]) 2750 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]); 2751 2752 if (key.type == -1) { 2753 if (mac_addr) 2754 key.type = NL80211_KEYTYPE_PAIRWISE; 2755 else 2756 key.type = NL80211_KEYTYPE_GROUP; 2757 } 2758 2759 /* for now */ 2760 if (key.type != NL80211_KEYTYPE_PAIRWISE && 2761 key.type != NL80211_KEYTYPE_GROUP) 2762 return -EINVAL; 2763 2764 if (!rdev->ops->add_key) 2765 return -EOPNOTSUPP; 2766 2767 if (cfg80211_validate_key_settings(rdev, &key.p, key.idx, 2768 key.type == NL80211_KEYTYPE_PAIRWISE, 2769 mac_addr)) 2770 return -EINVAL; 2771 2772 wdev_lock(dev->ieee80211_ptr); 2773 err = nl80211_key_allowed(dev->ieee80211_ptr); 2774 if (!err) 2775 err = rdev_add_key(rdev, dev, key.idx, 2776 key.type == NL80211_KEYTYPE_PAIRWISE, 2777 mac_addr, &key.p); 2778 wdev_unlock(dev->ieee80211_ptr); 2779 2780 return err; 2781 } 2782 2783 static int nl80211_del_key(struct sk_buff *skb, struct genl_info *info) 2784 { 2785 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 2786 int err; 2787 struct net_device *dev = info->user_ptr[1]; 2788 u8 *mac_addr = NULL; 2789 struct key_parse key; 2790 2791 err = nl80211_parse_key(info, &key); 2792 if (err) 2793 return err; 2794 2795 if (info->attrs[NL80211_ATTR_MAC]) 2796 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]); 2797 2798 if (key.type == -1) { 2799 if (mac_addr) 2800 key.type = NL80211_KEYTYPE_PAIRWISE; 2801 else 2802 key.type = NL80211_KEYTYPE_GROUP; 2803 } 2804 2805 /* for now */ 2806 if (key.type != NL80211_KEYTYPE_PAIRWISE && 2807 key.type != NL80211_KEYTYPE_GROUP) 2808 return -EINVAL; 2809 2810 if (!rdev->ops->del_key) 2811 return -EOPNOTSUPP; 2812 2813 wdev_lock(dev->ieee80211_ptr); 2814 err = nl80211_key_allowed(dev->ieee80211_ptr); 2815 2816 if (key.type == NL80211_KEYTYPE_PAIRWISE && mac_addr && 2817 !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN)) 2818 err = -ENOENT; 2819 2820 if (!err) 2821 err = rdev_del_key(rdev, dev, key.idx, 2822 key.type == NL80211_KEYTYPE_PAIRWISE, 2823 mac_addr); 2824 2825 #ifdef CONFIG_CFG80211_WEXT 2826 if (!err) { 2827 if (key.idx == dev->ieee80211_ptr->wext.default_key) 2828 dev->ieee80211_ptr->wext.default_key = -1; 2829 else if (key.idx == dev->ieee80211_ptr->wext.default_mgmt_key) 2830 dev->ieee80211_ptr->wext.default_mgmt_key = -1; 2831 } 2832 #endif 2833 wdev_unlock(dev->ieee80211_ptr); 2834 2835 return err; 2836 } 2837 2838 /* This function returns an error or the number of nested attributes */ 2839 static int validate_acl_mac_addrs(struct nlattr *nl_attr) 2840 { 2841 struct nlattr *attr; 2842 int n_entries = 0, tmp; 2843 2844 nla_for_each_nested(attr, nl_attr, tmp) { 2845 if (nla_len(attr) != ETH_ALEN) 2846 return -EINVAL; 2847 2848 n_entries++; 2849 } 2850 2851 return n_entries; 2852 } 2853 2854 /* 2855 * This function parses ACL information and allocates memory for ACL data. 2856 * On successful return, the calling function is responsible to free the 2857 * ACL buffer returned by this function. 2858 */ 2859 static struct cfg80211_acl_data *parse_acl_data(struct wiphy *wiphy, 2860 struct genl_info *info) 2861 { 2862 enum nl80211_acl_policy acl_policy; 2863 struct nlattr *attr; 2864 struct cfg80211_acl_data *acl; 2865 int i = 0, n_entries, tmp; 2866 2867 if (!wiphy->max_acl_mac_addrs) 2868 return ERR_PTR(-EOPNOTSUPP); 2869 2870 if (!info->attrs[NL80211_ATTR_ACL_POLICY]) 2871 return ERR_PTR(-EINVAL); 2872 2873 acl_policy = nla_get_u32(info->attrs[NL80211_ATTR_ACL_POLICY]); 2874 if (acl_policy != NL80211_ACL_POLICY_ACCEPT_UNLESS_LISTED && 2875 acl_policy != NL80211_ACL_POLICY_DENY_UNLESS_LISTED) 2876 return ERR_PTR(-EINVAL); 2877 2878 if (!info->attrs[NL80211_ATTR_MAC_ADDRS]) 2879 return ERR_PTR(-EINVAL); 2880 2881 n_entries = validate_acl_mac_addrs(info->attrs[NL80211_ATTR_MAC_ADDRS]); 2882 if (n_entries < 0) 2883 return ERR_PTR(n_entries); 2884 2885 if (n_entries > wiphy->max_acl_mac_addrs) 2886 return ERR_PTR(-ENOTSUPP); 2887 2888 acl = kzalloc(sizeof(*acl) + (sizeof(struct mac_address) * n_entries), 2889 GFP_KERNEL); 2890 if (!acl) 2891 return ERR_PTR(-ENOMEM); 2892 2893 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_MAC_ADDRS], tmp) { 2894 memcpy(acl->mac_addrs[i].addr, nla_data(attr), ETH_ALEN); 2895 i++; 2896 } 2897 2898 acl->n_acl_entries = n_entries; 2899 acl->acl_policy = acl_policy; 2900 2901 return acl; 2902 } 2903 2904 static int nl80211_set_mac_acl(struct sk_buff *skb, struct genl_info *info) 2905 { 2906 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 2907 struct net_device *dev = info->user_ptr[1]; 2908 struct cfg80211_acl_data *acl; 2909 int err; 2910 2911 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP && 2912 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) 2913 return -EOPNOTSUPP; 2914 2915 if (!dev->ieee80211_ptr->beacon_interval) 2916 return -EINVAL; 2917 2918 acl = parse_acl_data(&rdev->wiphy, info); 2919 if (IS_ERR(acl)) 2920 return PTR_ERR(acl); 2921 2922 err = rdev_set_mac_acl(rdev, dev, acl); 2923 2924 kfree(acl); 2925 2926 return err; 2927 } 2928 2929 static int nl80211_parse_beacon(struct genl_info *info, 2930 struct cfg80211_beacon_data *bcn) 2931 { 2932 bool haveinfo = false; 2933 2934 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_BEACON_TAIL]) || 2935 !is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]) || 2936 !is_valid_ie_attr(info->attrs[NL80211_ATTR_IE_PROBE_RESP]) || 2937 !is_valid_ie_attr(info->attrs[NL80211_ATTR_IE_ASSOC_RESP])) 2938 return -EINVAL; 2939 2940 memset(bcn, 0, sizeof(*bcn)); 2941 2942 if (info->attrs[NL80211_ATTR_BEACON_HEAD]) { 2943 bcn->head = nla_data(info->attrs[NL80211_ATTR_BEACON_HEAD]); 2944 bcn->head_len = nla_len(info->attrs[NL80211_ATTR_BEACON_HEAD]); 2945 if (!bcn->head_len) 2946 return -EINVAL; 2947 haveinfo = true; 2948 } 2949 2950 if (info->attrs[NL80211_ATTR_BEACON_TAIL]) { 2951 bcn->tail = nla_data(info->attrs[NL80211_ATTR_BEACON_TAIL]); 2952 bcn->tail_len = 2953 nla_len(info->attrs[NL80211_ATTR_BEACON_TAIL]); 2954 haveinfo = true; 2955 } 2956 2957 if (!haveinfo) 2958 return -EINVAL; 2959 2960 if (info->attrs[NL80211_ATTR_IE]) { 2961 bcn->beacon_ies = nla_data(info->attrs[NL80211_ATTR_IE]); 2962 bcn->beacon_ies_len = nla_len(info->attrs[NL80211_ATTR_IE]); 2963 } 2964 2965 if (info->attrs[NL80211_ATTR_IE_PROBE_RESP]) { 2966 bcn->proberesp_ies = 2967 nla_data(info->attrs[NL80211_ATTR_IE_PROBE_RESP]); 2968 bcn->proberesp_ies_len = 2969 nla_len(info->attrs[NL80211_ATTR_IE_PROBE_RESP]); 2970 } 2971 2972 if (info->attrs[NL80211_ATTR_IE_ASSOC_RESP]) { 2973 bcn->assocresp_ies = 2974 nla_data(info->attrs[NL80211_ATTR_IE_ASSOC_RESP]); 2975 bcn->assocresp_ies_len = 2976 nla_len(info->attrs[NL80211_ATTR_IE_ASSOC_RESP]); 2977 } 2978 2979 if (info->attrs[NL80211_ATTR_PROBE_RESP]) { 2980 bcn->probe_resp = 2981 nla_data(info->attrs[NL80211_ATTR_PROBE_RESP]); 2982 bcn->probe_resp_len = 2983 nla_len(info->attrs[NL80211_ATTR_PROBE_RESP]); 2984 } 2985 2986 return 0; 2987 } 2988 2989 static bool nl80211_get_ap_channel(struct cfg80211_registered_device *rdev, 2990 struct cfg80211_ap_settings *params) 2991 { 2992 struct wireless_dev *wdev; 2993 bool ret = false; 2994 2995 mutex_lock(&rdev->devlist_mtx); 2996 2997 list_for_each_entry(wdev, &rdev->wdev_list, list) { 2998 if (wdev->iftype != NL80211_IFTYPE_AP && 2999 wdev->iftype != NL80211_IFTYPE_P2P_GO) 3000 continue; 3001 3002 if (!wdev->preset_chandef.chan) 3003 continue; 3004 3005 params->chandef = wdev->preset_chandef; 3006 ret = true; 3007 break; 3008 } 3009 3010 mutex_unlock(&rdev->devlist_mtx); 3011 3012 return ret; 3013 } 3014 3015 static bool nl80211_valid_auth_type(struct cfg80211_registered_device *rdev, 3016 enum nl80211_auth_type auth_type, 3017 enum nl80211_commands cmd) 3018 { 3019 if (auth_type > NL80211_AUTHTYPE_MAX) 3020 return false; 3021 3022 switch (cmd) { 3023 case NL80211_CMD_AUTHENTICATE: 3024 if (!(rdev->wiphy.features & NL80211_FEATURE_SAE) && 3025 auth_type == NL80211_AUTHTYPE_SAE) 3026 return false; 3027 return true; 3028 case NL80211_CMD_CONNECT: 3029 case NL80211_CMD_START_AP: 3030 /* SAE not supported yet */ 3031 if (auth_type == NL80211_AUTHTYPE_SAE) 3032 return false; 3033 return true; 3034 default: 3035 return false; 3036 } 3037 } 3038 3039 static int nl80211_start_ap(struct sk_buff *skb, struct genl_info *info) 3040 { 3041 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 3042 struct net_device *dev = info->user_ptr[1]; 3043 struct wireless_dev *wdev = dev->ieee80211_ptr; 3044 struct cfg80211_ap_settings params; 3045 int err; 3046 u8 radar_detect_width = 0; 3047 3048 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP && 3049 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) 3050 return -EOPNOTSUPP; 3051 3052 if (!rdev->ops->start_ap) 3053 return -EOPNOTSUPP; 3054 3055 if (wdev->beacon_interval) 3056 return -EALREADY; 3057 3058 memset(¶ms, 0, sizeof(params)); 3059 3060 /* these are required for START_AP */ 3061 if (!info->attrs[NL80211_ATTR_BEACON_INTERVAL] || 3062 !info->attrs[NL80211_ATTR_DTIM_PERIOD] || 3063 !info->attrs[NL80211_ATTR_BEACON_HEAD]) 3064 return -EINVAL; 3065 3066 err = nl80211_parse_beacon(info, ¶ms.beacon); 3067 if (err) 3068 return err; 3069 3070 params.beacon_interval = 3071 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]); 3072 params.dtim_period = 3073 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]); 3074 3075 err = cfg80211_validate_beacon_int(rdev, params.beacon_interval); 3076 if (err) 3077 return err; 3078 3079 /* 3080 * In theory, some of these attributes should be required here 3081 * but since they were not used when the command was originally 3082 * added, keep them optional for old user space programs to let 3083 * them continue to work with drivers that do not need the 3084 * additional information -- drivers must check! 3085 */ 3086 if (info->attrs[NL80211_ATTR_SSID]) { 3087 params.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]); 3088 params.ssid_len = 3089 nla_len(info->attrs[NL80211_ATTR_SSID]); 3090 if (params.ssid_len == 0 || 3091 params.ssid_len > IEEE80211_MAX_SSID_LEN) 3092 return -EINVAL; 3093 } 3094 3095 if (info->attrs[NL80211_ATTR_HIDDEN_SSID]) { 3096 params.hidden_ssid = nla_get_u32( 3097 info->attrs[NL80211_ATTR_HIDDEN_SSID]); 3098 if (params.hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE && 3099 params.hidden_ssid != NL80211_HIDDEN_SSID_ZERO_LEN && 3100 params.hidden_ssid != NL80211_HIDDEN_SSID_ZERO_CONTENTS) 3101 return -EINVAL; 3102 } 3103 3104 params.privacy = !!info->attrs[NL80211_ATTR_PRIVACY]; 3105 3106 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) { 3107 params.auth_type = nla_get_u32( 3108 info->attrs[NL80211_ATTR_AUTH_TYPE]); 3109 if (!nl80211_valid_auth_type(rdev, params.auth_type, 3110 NL80211_CMD_START_AP)) 3111 return -EINVAL; 3112 } else 3113 params.auth_type = NL80211_AUTHTYPE_AUTOMATIC; 3114 3115 err = nl80211_crypto_settings(rdev, info, ¶ms.crypto, 3116 NL80211_MAX_NR_CIPHER_SUITES); 3117 if (err) 3118 return err; 3119 3120 if (info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]) { 3121 if (!(rdev->wiphy.features & NL80211_FEATURE_INACTIVITY_TIMER)) 3122 return -EOPNOTSUPP; 3123 params.inactivity_timeout = nla_get_u16( 3124 info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]); 3125 } 3126 3127 if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) { 3128 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) 3129 return -EINVAL; 3130 params.p2p_ctwindow = 3131 nla_get_u8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]); 3132 if (params.p2p_ctwindow > 127) 3133 return -EINVAL; 3134 if (params.p2p_ctwindow != 0 && 3135 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN)) 3136 return -EINVAL; 3137 } 3138 3139 if (info->attrs[NL80211_ATTR_P2P_OPPPS]) { 3140 u8 tmp; 3141 3142 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) 3143 return -EINVAL; 3144 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]); 3145 if (tmp > 1) 3146 return -EINVAL; 3147 params.p2p_opp_ps = tmp; 3148 if (params.p2p_opp_ps != 0 && 3149 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS)) 3150 return -EINVAL; 3151 } 3152 3153 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) { 3154 err = nl80211_parse_chandef(rdev, info, ¶ms.chandef); 3155 if (err) 3156 return err; 3157 } else if (wdev->preset_chandef.chan) { 3158 params.chandef = wdev->preset_chandef; 3159 } else if (!nl80211_get_ap_channel(rdev, ¶ms)) 3160 return -EINVAL; 3161 3162 if (!cfg80211_reg_can_beacon(&rdev->wiphy, ¶ms.chandef)) 3163 return -EINVAL; 3164 3165 err = cfg80211_chandef_dfs_required(wdev->wiphy, ¶ms.chandef); 3166 if (err < 0) 3167 return err; 3168 if (err) { 3169 radar_detect_width = BIT(params.chandef.width); 3170 params.radar_required = true; 3171 } 3172 3173 mutex_lock(&rdev->devlist_mtx); 3174 err = cfg80211_can_use_iftype_chan(rdev, wdev, wdev->iftype, 3175 params.chandef.chan, 3176 CHAN_MODE_SHARED, 3177 radar_detect_width); 3178 mutex_unlock(&rdev->devlist_mtx); 3179 3180 if (err) 3181 return err; 3182 3183 if (info->attrs[NL80211_ATTR_ACL_POLICY]) { 3184 params.acl = parse_acl_data(&rdev->wiphy, info); 3185 if (IS_ERR(params.acl)) 3186 return PTR_ERR(params.acl); 3187 } 3188 3189 err = rdev_start_ap(rdev, dev, ¶ms); 3190 if (!err) { 3191 wdev->preset_chandef = params.chandef; 3192 wdev->beacon_interval = params.beacon_interval; 3193 wdev->channel = params.chandef.chan; 3194 wdev->ssid_len = params.ssid_len; 3195 memcpy(wdev->ssid, params.ssid, wdev->ssid_len); 3196 } 3197 3198 kfree(params.acl); 3199 3200 return err; 3201 } 3202 3203 static int nl80211_set_beacon(struct sk_buff *skb, struct genl_info *info) 3204 { 3205 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 3206 struct net_device *dev = info->user_ptr[1]; 3207 struct wireless_dev *wdev = dev->ieee80211_ptr; 3208 struct cfg80211_beacon_data params; 3209 int err; 3210 3211 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP && 3212 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) 3213 return -EOPNOTSUPP; 3214 3215 if (!rdev->ops->change_beacon) 3216 return -EOPNOTSUPP; 3217 3218 if (!wdev->beacon_interval) 3219 return -EINVAL; 3220 3221 err = nl80211_parse_beacon(info, ¶ms); 3222 if (err) 3223 return err; 3224 3225 return rdev_change_beacon(rdev, dev, ¶ms); 3226 } 3227 3228 static int nl80211_stop_ap(struct sk_buff *skb, struct genl_info *info) 3229 { 3230 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 3231 struct net_device *dev = info->user_ptr[1]; 3232 3233 return cfg80211_stop_ap(rdev, dev); 3234 } 3235 3236 static const struct nla_policy sta_flags_policy[NL80211_STA_FLAG_MAX + 1] = { 3237 [NL80211_STA_FLAG_AUTHORIZED] = { .type = NLA_FLAG }, 3238 [NL80211_STA_FLAG_SHORT_PREAMBLE] = { .type = NLA_FLAG }, 3239 [NL80211_STA_FLAG_WME] = { .type = NLA_FLAG }, 3240 [NL80211_STA_FLAG_MFP] = { .type = NLA_FLAG }, 3241 [NL80211_STA_FLAG_AUTHENTICATED] = { .type = NLA_FLAG }, 3242 [NL80211_STA_FLAG_TDLS_PEER] = { .type = NLA_FLAG }, 3243 }; 3244 3245 static int parse_station_flags(struct genl_info *info, 3246 enum nl80211_iftype iftype, 3247 struct station_parameters *params) 3248 { 3249 struct nlattr *flags[NL80211_STA_FLAG_MAX + 1]; 3250 struct nlattr *nla; 3251 int flag; 3252 3253 /* 3254 * Try parsing the new attribute first so userspace 3255 * can specify both for older kernels. 3256 */ 3257 nla = info->attrs[NL80211_ATTR_STA_FLAGS2]; 3258 if (nla) { 3259 struct nl80211_sta_flag_update *sta_flags; 3260 3261 sta_flags = nla_data(nla); 3262 params->sta_flags_mask = sta_flags->mask; 3263 params->sta_flags_set = sta_flags->set; 3264 params->sta_flags_set &= params->sta_flags_mask; 3265 if ((params->sta_flags_mask | 3266 params->sta_flags_set) & BIT(__NL80211_STA_FLAG_INVALID)) 3267 return -EINVAL; 3268 return 0; 3269 } 3270 3271 /* if present, parse the old attribute */ 3272 3273 nla = info->attrs[NL80211_ATTR_STA_FLAGS]; 3274 if (!nla) 3275 return 0; 3276 3277 if (nla_parse_nested(flags, NL80211_STA_FLAG_MAX, 3278 nla, sta_flags_policy)) 3279 return -EINVAL; 3280 3281 /* 3282 * Only allow certain flags for interface types so that 3283 * other attributes are silently ignored. Remember that 3284 * this is backward compatibility code with old userspace 3285 * and shouldn't be hit in other cases anyway. 3286 */ 3287 switch (iftype) { 3288 case NL80211_IFTYPE_AP: 3289 case NL80211_IFTYPE_AP_VLAN: 3290 case NL80211_IFTYPE_P2P_GO: 3291 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) | 3292 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) | 3293 BIT(NL80211_STA_FLAG_WME) | 3294 BIT(NL80211_STA_FLAG_MFP); 3295 break; 3296 case NL80211_IFTYPE_P2P_CLIENT: 3297 case NL80211_IFTYPE_STATION: 3298 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) | 3299 BIT(NL80211_STA_FLAG_TDLS_PEER); 3300 break; 3301 case NL80211_IFTYPE_MESH_POINT: 3302 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHENTICATED) | 3303 BIT(NL80211_STA_FLAG_MFP) | 3304 BIT(NL80211_STA_FLAG_AUTHORIZED); 3305 default: 3306 return -EINVAL; 3307 } 3308 3309 for (flag = 1; flag <= NL80211_STA_FLAG_MAX; flag++) { 3310 if (flags[flag]) { 3311 params->sta_flags_set |= (1<<flag); 3312 3313 /* no longer support new API additions in old API */ 3314 if (flag > NL80211_STA_FLAG_MAX_OLD_API) 3315 return -EINVAL; 3316 } 3317 } 3318 3319 return 0; 3320 } 3321 3322 static bool nl80211_put_sta_rate(struct sk_buff *msg, struct rate_info *info, 3323 int attr) 3324 { 3325 struct nlattr *rate; 3326 u32 bitrate; 3327 u16 bitrate_compat; 3328 3329 rate = nla_nest_start(msg, attr); 3330 if (!rate) 3331 return false; 3332 3333 /* cfg80211_calculate_bitrate will return 0 for mcs >= 32 */ 3334 bitrate = cfg80211_calculate_bitrate(info); 3335 /* report 16-bit bitrate only if we can */ 3336 bitrate_compat = bitrate < (1UL << 16) ? bitrate : 0; 3337 if (bitrate > 0 && 3338 nla_put_u32(msg, NL80211_RATE_INFO_BITRATE32, bitrate)) 3339 return false; 3340 if (bitrate_compat > 0 && 3341 nla_put_u16(msg, NL80211_RATE_INFO_BITRATE, bitrate_compat)) 3342 return false; 3343 3344 if (info->flags & RATE_INFO_FLAGS_MCS) { 3345 if (nla_put_u8(msg, NL80211_RATE_INFO_MCS, info->mcs)) 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_SHORT_GI && 3351 nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI)) 3352 return false; 3353 } else if (info->flags & RATE_INFO_FLAGS_VHT_MCS) { 3354 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_MCS, info->mcs)) 3355 return false; 3356 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_NSS, info->nss)) 3357 return false; 3358 if (info->flags & RATE_INFO_FLAGS_40_MHZ_WIDTH && 3359 nla_put_flag(msg, NL80211_RATE_INFO_40_MHZ_WIDTH)) 3360 return false; 3361 if (info->flags & RATE_INFO_FLAGS_80_MHZ_WIDTH && 3362 nla_put_flag(msg, NL80211_RATE_INFO_80_MHZ_WIDTH)) 3363 return false; 3364 if (info->flags & RATE_INFO_FLAGS_80P80_MHZ_WIDTH && 3365 nla_put_flag(msg, NL80211_RATE_INFO_80P80_MHZ_WIDTH)) 3366 return false; 3367 if (info->flags & RATE_INFO_FLAGS_160_MHZ_WIDTH && 3368 nla_put_flag(msg, NL80211_RATE_INFO_160_MHZ_WIDTH)) 3369 return false; 3370 if (info->flags & RATE_INFO_FLAGS_SHORT_GI && 3371 nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI)) 3372 return false; 3373 } 3374 3375 nla_nest_end(msg, rate); 3376 return true; 3377 } 3378 3379 static int nl80211_send_station(struct sk_buff *msg, u32 portid, u32 seq, 3380 int flags, 3381 struct cfg80211_registered_device *rdev, 3382 struct net_device *dev, 3383 const u8 *mac_addr, struct station_info *sinfo) 3384 { 3385 void *hdr; 3386 struct nlattr *sinfoattr, *bss_param; 3387 3388 hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_STATION); 3389 if (!hdr) 3390 return -1; 3391 3392 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) || 3393 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) || 3394 nla_put_u32(msg, NL80211_ATTR_GENERATION, sinfo->generation)) 3395 goto nla_put_failure; 3396 3397 sinfoattr = nla_nest_start(msg, NL80211_ATTR_STA_INFO); 3398 if (!sinfoattr) 3399 goto nla_put_failure; 3400 if ((sinfo->filled & STATION_INFO_CONNECTED_TIME) && 3401 nla_put_u32(msg, NL80211_STA_INFO_CONNECTED_TIME, 3402 sinfo->connected_time)) 3403 goto nla_put_failure; 3404 if ((sinfo->filled & STATION_INFO_INACTIVE_TIME) && 3405 nla_put_u32(msg, NL80211_STA_INFO_INACTIVE_TIME, 3406 sinfo->inactive_time)) 3407 goto nla_put_failure; 3408 if ((sinfo->filled & (STATION_INFO_RX_BYTES | 3409 STATION_INFO_RX_BYTES64)) && 3410 nla_put_u32(msg, NL80211_STA_INFO_RX_BYTES, 3411 (u32)sinfo->rx_bytes)) 3412 goto nla_put_failure; 3413 if ((sinfo->filled & (STATION_INFO_TX_BYTES | 3414 STATION_INFO_TX_BYTES64)) && 3415 nla_put_u32(msg, NL80211_STA_INFO_TX_BYTES, 3416 (u32)sinfo->tx_bytes)) 3417 goto nla_put_failure; 3418 if ((sinfo->filled & STATION_INFO_RX_BYTES64) && 3419 nla_put_u64(msg, NL80211_STA_INFO_RX_BYTES64, 3420 sinfo->rx_bytes)) 3421 goto nla_put_failure; 3422 if ((sinfo->filled & STATION_INFO_TX_BYTES64) && 3423 nla_put_u64(msg, NL80211_STA_INFO_TX_BYTES64, 3424 sinfo->tx_bytes)) 3425 goto nla_put_failure; 3426 if ((sinfo->filled & STATION_INFO_LLID) && 3427 nla_put_u16(msg, NL80211_STA_INFO_LLID, sinfo->llid)) 3428 goto nla_put_failure; 3429 if ((sinfo->filled & STATION_INFO_PLID) && 3430 nla_put_u16(msg, NL80211_STA_INFO_PLID, sinfo->plid)) 3431 goto nla_put_failure; 3432 if ((sinfo->filled & STATION_INFO_PLINK_STATE) && 3433 nla_put_u8(msg, NL80211_STA_INFO_PLINK_STATE, 3434 sinfo->plink_state)) 3435 goto nla_put_failure; 3436 switch (rdev->wiphy.signal_type) { 3437 case CFG80211_SIGNAL_TYPE_MBM: 3438 if ((sinfo->filled & STATION_INFO_SIGNAL) && 3439 nla_put_u8(msg, NL80211_STA_INFO_SIGNAL, 3440 sinfo->signal)) 3441 goto nla_put_failure; 3442 if ((sinfo->filled & STATION_INFO_SIGNAL_AVG) && 3443 nla_put_u8(msg, NL80211_STA_INFO_SIGNAL_AVG, 3444 sinfo->signal_avg)) 3445 goto nla_put_failure; 3446 break; 3447 default: 3448 break; 3449 } 3450 if (sinfo->filled & STATION_INFO_TX_BITRATE) { 3451 if (!nl80211_put_sta_rate(msg, &sinfo->txrate, 3452 NL80211_STA_INFO_TX_BITRATE)) 3453 goto nla_put_failure; 3454 } 3455 if (sinfo->filled & STATION_INFO_RX_BITRATE) { 3456 if (!nl80211_put_sta_rate(msg, &sinfo->rxrate, 3457 NL80211_STA_INFO_RX_BITRATE)) 3458 goto nla_put_failure; 3459 } 3460 if ((sinfo->filled & STATION_INFO_RX_PACKETS) && 3461 nla_put_u32(msg, NL80211_STA_INFO_RX_PACKETS, 3462 sinfo->rx_packets)) 3463 goto nla_put_failure; 3464 if ((sinfo->filled & STATION_INFO_TX_PACKETS) && 3465 nla_put_u32(msg, NL80211_STA_INFO_TX_PACKETS, 3466 sinfo->tx_packets)) 3467 goto nla_put_failure; 3468 if ((sinfo->filled & STATION_INFO_TX_RETRIES) && 3469 nla_put_u32(msg, NL80211_STA_INFO_TX_RETRIES, 3470 sinfo->tx_retries)) 3471 goto nla_put_failure; 3472 if ((sinfo->filled & STATION_INFO_TX_FAILED) && 3473 nla_put_u32(msg, NL80211_STA_INFO_TX_FAILED, 3474 sinfo->tx_failed)) 3475 goto nla_put_failure; 3476 if ((sinfo->filled & STATION_INFO_BEACON_LOSS_COUNT) && 3477 nla_put_u32(msg, NL80211_STA_INFO_BEACON_LOSS, 3478 sinfo->beacon_loss_count)) 3479 goto nla_put_failure; 3480 if ((sinfo->filled & STATION_INFO_LOCAL_PM) && 3481 nla_put_u32(msg, NL80211_STA_INFO_LOCAL_PM, 3482 sinfo->local_pm)) 3483 goto nla_put_failure; 3484 if ((sinfo->filled & STATION_INFO_PEER_PM) && 3485 nla_put_u32(msg, NL80211_STA_INFO_PEER_PM, 3486 sinfo->peer_pm)) 3487 goto nla_put_failure; 3488 if ((sinfo->filled & STATION_INFO_NONPEER_PM) && 3489 nla_put_u32(msg, NL80211_STA_INFO_NONPEER_PM, 3490 sinfo->nonpeer_pm)) 3491 goto nla_put_failure; 3492 if (sinfo->filled & STATION_INFO_BSS_PARAM) { 3493 bss_param = nla_nest_start(msg, NL80211_STA_INFO_BSS_PARAM); 3494 if (!bss_param) 3495 goto nla_put_failure; 3496 3497 if (((sinfo->bss_param.flags & BSS_PARAM_FLAGS_CTS_PROT) && 3498 nla_put_flag(msg, NL80211_STA_BSS_PARAM_CTS_PROT)) || 3499 ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_PREAMBLE) && 3500 nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_PREAMBLE)) || 3501 ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_SLOT_TIME) && 3502 nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_SLOT_TIME)) || 3503 nla_put_u8(msg, NL80211_STA_BSS_PARAM_DTIM_PERIOD, 3504 sinfo->bss_param.dtim_period) || 3505 nla_put_u16(msg, NL80211_STA_BSS_PARAM_BEACON_INTERVAL, 3506 sinfo->bss_param.beacon_interval)) 3507 goto nla_put_failure; 3508 3509 nla_nest_end(msg, bss_param); 3510 } 3511 if ((sinfo->filled & STATION_INFO_STA_FLAGS) && 3512 nla_put(msg, NL80211_STA_INFO_STA_FLAGS, 3513 sizeof(struct nl80211_sta_flag_update), 3514 &sinfo->sta_flags)) 3515 goto nla_put_failure; 3516 if ((sinfo->filled & STATION_INFO_T_OFFSET) && 3517 nla_put_u64(msg, NL80211_STA_INFO_T_OFFSET, 3518 sinfo->t_offset)) 3519 goto nla_put_failure; 3520 nla_nest_end(msg, sinfoattr); 3521 3522 if ((sinfo->filled & STATION_INFO_ASSOC_REQ_IES) && 3523 nla_put(msg, NL80211_ATTR_IE, sinfo->assoc_req_ies_len, 3524 sinfo->assoc_req_ies)) 3525 goto nla_put_failure; 3526 3527 return genlmsg_end(msg, hdr); 3528 3529 nla_put_failure: 3530 genlmsg_cancel(msg, hdr); 3531 return -EMSGSIZE; 3532 } 3533 3534 static int nl80211_dump_station(struct sk_buff *skb, 3535 struct netlink_callback *cb) 3536 { 3537 struct station_info sinfo; 3538 struct cfg80211_registered_device *dev; 3539 struct wireless_dev *wdev; 3540 u8 mac_addr[ETH_ALEN]; 3541 int sta_idx = cb->args[2]; 3542 int err; 3543 3544 err = nl80211_prepare_wdev_dump(skb, cb, &dev, &wdev); 3545 if (err) 3546 return err; 3547 3548 if (!wdev->netdev) { 3549 err = -EINVAL; 3550 goto out_err; 3551 } 3552 3553 if (!dev->ops->dump_station) { 3554 err = -EOPNOTSUPP; 3555 goto out_err; 3556 } 3557 3558 while (1) { 3559 memset(&sinfo, 0, sizeof(sinfo)); 3560 err = rdev_dump_station(dev, wdev->netdev, sta_idx, 3561 mac_addr, &sinfo); 3562 if (err == -ENOENT) 3563 break; 3564 if (err) 3565 goto out_err; 3566 3567 if (nl80211_send_station(skb, 3568 NETLINK_CB(cb->skb).portid, 3569 cb->nlh->nlmsg_seq, NLM_F_MULTI, 3570 dev, wdev->netdev, mac_addr, 3571 &sinfo) < 0) 3572 goto out; 3573 3574 sta_idx++; 3575 } 3576 3577 3578 out: 3579 cb->args[2] = sta_idx; 3580 err = skb->len; 3581 out_err: 3582 nl80211_finish_wdev_dump(dev); 3583 3584 return err; 3585 } 3586 3587 static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info) 3588 { 3589 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 3590 struct net_device *dev = info->user_ptr[1]; 3591 struct station_info sinfo; 3592 struct sk_buff *msg; 3593 u8 *mac_addr = NULL; 3594 int err; 3595 3596 memset(&sinfo, 0, sizeof(sinfo)); 3597 3598 if (!info->attrs[NL80211_ATTR_MAC]) 3599 return -EINVAL; 3600 3601 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]); 3602 3603 if (!rdev->ops->get_station) 3604 return -EOPNOTSUPP; 3605 3606 err = rdev_get_station(rdev, dev, mac_addr, &sinfo); 3607 if (err) 3608 return err; 3609 3610 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 3611 if (!msg) 3612 return -ENOMEM; 3613 3614 if (nl80211_send_station(msg, info->snd_portid, info->snd_seq, 0, 3615 rdev, dev, mac_addr, &sinfo) < 0) { 3616 nlmsg_free(msg); 3617 return -ENOBUFS; 3618 } 3619 3620 return genlmsg_reply(msg, info); 3621 } 3622 3623 int cfg80211_check_station_change(struct wiphy *wiphy, 3624 struct station_parameters *params, 3625 enum cfg80211_station_type statype) 3626 { 3627 if (params->listen_interval != -1) 3628 return -EINVAL; 3629 if (params->aid) 3630 return -EINVAL; 3631 3632 /* When you run into this, adjust the code below for the new flag */ 3633 BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7); 3634 3635 switch (statype) { 3636 case CFG80211_STA_MESH_PEER_KERNEL: 3637 case CFG80211_STA_MESH_PEER_USER: 3638 /* 3639 * No ignoring the TDLS flag here -- the userspace mesh 3640 * code doesn't have the bug of including TDLS in the 3641 * mask everywhere. 3642 */ 3643 if (params->sta_flags_mask & 3644 ~(BIT(NL80211_STA_FLAG_AUTHENTICATED) | 3645 BIT(NL80211_STA_FLAG_MFP) | 3646 BIT(NL80211_STA_FLAG_AUTHORIZED))) 3647 return -EINVAL; 3648 break; 3649 case CFG80211_STA_TDLS_PEER_SETUP: 3650 case CFG80211_STA_TDLS_PEER_ACTIVE: 3651 if (!(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))) 3652 return -EINVAL; 3653 /* ignore since it can't change */ 3654 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER); 3655 break; 3656 default: 3657 /* disallow mesh-specific things */ 3658 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION) 3659 return -EINVAL; 3660 if (params->local_pm) 3661 return -EINVAL; 3662 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE) 3663 return -EINVAL; 3664 } 3665 3666 if (statype != CFG80211_STA_TDLS_PEER_SETUP && 3667 statype != CFG80211_STA_TDLS_PEER_ACTIVE) { 3668 /* TDLS can't be set, ... */ 3669 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) 3670 return -EINVAL; 3671 /* 3672 * ... but don't bother the driver with it. This works around 3673 * a hostapd/wpa_supplicant issue -- it always includes the 3674 * TLDS_PEER flag in the mask even for AP mode. 3675 */ 3676 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER); 3677 } 3678 3679 if (statype != CFG80211_STA_TDLS_PEER_SETUP) { 3680 /* reject other things that can't change */ 3681 if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD) 3682 return -EINVAL; 3683 if (params->sta_modify_mask & STATION_PARAM_APPLY_CAPABILITY) 3684 return -EINVAL; 3685 if (params->supported_rates) 3686 return -EINVAL; 3687 if (params->ext_capab || params->ht_capa || params->vht_capa) 3688 return -EINVAL; 3689 } 3690 3691 if (statype != CFG80211_STA_AP_CLIENT) { 3692 if (params->vlan) 3693 return -EINVAL; 3694 } 3695 3696 switch (statype) { 3697 case CFG80211_STA_AP_MLME_CLIENT: 3698 /* Use this only for authorizing/unauthorizing a station */ 3699 if (!(params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED))) 3700 return -EOPNOTSUPP; 3701 break; 3702 case CFG80211_STA_AP_CLIENT: 3703 /* accept only the listed bits */ 3704 if (params->sta_flags_mask & 3705 ~(BIT(NL80211_STA_FLAG_AUTHORIZED) | 3706 BIT(NL80211_STA_FLAG_AUTHENTICATED) | 3707 BIT(NL80211_STA_FLAG_ASSOCIATED) | 3708 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) | 3709 BIT(NL80211_STA_FLAG_WME) | 3710 BIT(NL80211_STA_FLAG_MFP))) 3711 return -EINVAL; 3712 3713 /* but authenticated/associated only if driver handles it */ 3714 if (!(wiphy->features & NL80211_FEATURE_FULL_AP_CLIENT_STATE) && 3715 params->sta_flags_mask & 3716 (BIT(NL80211_STA_FLAG_AUTHENTICATED) | 3717 BIT(NL80211_STA_FLAG_ASSOCIATED))) 3718 return -EINVAL; 3719 break; 3720 case CFG80211_STA_IBSS: 3721 case CFG80211_STA_AP_STA: 3722 /* reject any changes other than AUTHORIZED */ 3723 if (params->sta_flags_mask & ~BIT(NL80211_STA_FLAG_AUTHORIZED)) 3724 return -EINVAL; 3725 break; 3726 case CFG80211_STA_TDLS_PEER_SETUP: 3727 /* reject any changes other than AUTHORIZED or WME */ 3728 if (params->sta_flags_mask & ~(BIT(NL80211_STA_FLAG_AUTHORIZED) | 3729 BIT(NL80211_STA_FLAG_WME))) 3730 return -EINVAL; 3731 /* force (at least) rates when authorizing */ 3732 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_AUTHORIZED) && 3733 !params->supported_rates) 3734 return -EINVAL; 3735 break; 3736 case CFG80211_STA_TDLS_PEER_ACTIVE: 3737 /* reject any changes */ 3738 return -EINVAL; 3739 case CFG80211_STA_MESH_PEER_KERNEL: 3740 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE) 3741 return -EINVAL; 3742 break; 3743 case CFG80211_STA_MESH_PEER_USER: 3744 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION) 3745 return -EINVAL; 3746 break; 3747 } 3748 3749 return 0; 3750 } 3751 EXPORT_SYMBOL(cfg80211_check_station_change); 3752 3753 /* 3754 * Get vlan interface making sure it is running and on the right wiphy. 3755 */ 3756 static struct net_device *get_vlan(struct genl_info *info, 3757 struct cfg80211_registered_device *rdev) 3758 { 3759 struct nlattr *vlanattr = info->attrs[NL80211_ATTR_STA_VLAN]; 3760 struct net_device *v; 3761 int ret; 3762 3763 if (!vlanattr) 3764 return NULL; 3765 3766 v = dev_get_by_index(genl_info_net(info), nla_get_u32(vlanattr)); 3767 if (!v) 3768 return ERR_PTR(-ENODEV); 3769 3770 if (!v->ieee80211_ptr || v->ieee80211_ptr->wiphy != &rdev->wiphy) { 3771 ret = -EINVAL; 3772 goto error; 3773 } 3774 3775 if (v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN && 3776 v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP && 3777 v->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) { 3778 ret = -EINVAL; 3779 goto error; 3780 } 3781 3782 if (!netif_running(v)) { 3783 ret = -ENETDOWN; 3784 goto error; 3785 } 3786 3787 return v; 3788 error: 3789 dev_put(v); 3790 return ERR_PTR(ret); 3791 } 3792 3793 static struct nla_policy 3794 nl80211_sta_wme_policy[NL80211_STA_WME_MAX + 1] __read_mostly = { 3795 [NL80211_STA_WME_UAPSD_QUEUES] = { .type = NLA_U8 }, 3796 [NL80211_STA_WME_MAX_SP] = { .type = NLA_U8 }, 3797 }; 3798 3799 static int nl80211_parse_sta_wme(struct genl_info *info, 3800 struct station_parameters *params) 3801 { 3802 struct nlattr *tb[NL80211_STA_WME_MAX + 1]; 3803 struct nlattr *nla; 3804 int err; 3805 3806 /* parse WME attributes if present */ 3807 if (!info->attrs[NL80211_ATTR_STA_WME]) 3808 return 0; 3809 3810 nla = info->attrs[NL80211_ATTR_STA_WME]; 3811 err = nla_parse_nested(tb, NL80211_STA_WME_MAX, nla, 3812 nl80211_sta_wme_policy); 3813 if (err) 3814 return err; 3815 3816 if (tb[NL80211_STA_WME_UAPSD_QUEUES]) 3817 params->uapsd_queues = nla_get_u8( 3818 tb[NL80211_STA_WME_UAPSD_QUEUES]); 3819 if (params->uapsd_queues & ~IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK) 3820 return -EINVAL; 3821 3822 if (tb[NL80211_STA_WME_MAX_SP]) 3823 params->max_sp = nla_get_u8(tb[NL80211_STA_WME_MAX_SP]); 3824 3825 if (params->max_sp & ~IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK) 3826 return -EINVAL; 3827 3828 params->sta_modify_mask |= STATION_PARAM_APPLY_UAPSD; 3829 3830 return 0; 3831 } 3832 3833 static int nl80211_set_station_tdls(struct genl_info *info, 3834 struct station_parameters *params) 3835 { 3836 /* Dummy STA entry gets updated once the peer capabilities are known */ 3837 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) 3838 params->ht_capa = 3839 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]); 3840 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) 3841 params->vht_capa = 3842 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]); 3843 3844 return nl80211_parse_sta_wme(info, params); 3845 } 3846 3847 static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info) 3848 { 3849 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 3850 struct net_device *dev = info->user_ptr[1]; 3851 struct station_parameters params; 3852 u8 *mac_addr; 3853 int err; 3854 3855 memset(¶ms, 0, sizeof(params)); 3856 3857 params.listen_interval = -1; 3858 3859 if (!rdev->ops->change_station) 3860 return -EOPNOTSUPP; 3861 3862 if (info->attrs[NL80211_ATTR_STA_AID]) 3863 return -EINVAL; 3864 3865 if (!info->attrs[NL80211_ATTR_MAC]) 3866 return -EINVAL; 3867 3868 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]); 3869 3870 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) { 3871 params.supported_rates = 3872 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]); 3873 params.supported_rates_len = 3874 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]); 3875 } 3876 3877 if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) { 3878 params.capability = 3879 nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]); 3880 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY; 3881 } 3882 3883 if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) { 3884 params.ext_capab = 3885 nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]); 3886 params.ext_capab_len = 3887 nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]); 3888 } 3889 3890 if (info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]) 3891 return -EINVAL; 3892 3893 if (parse_station_flags(info, dev->ieee80211_ptr->iftype, ¶ms)) 3894 return -EINVAL; 3895 3896 if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION]) { 3897 params.plink_action = 3898 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]); 3899 if (params.plink_action >= NUM_NL80211_PLINK_ACTIONS) 3900 return -EINVAL; 3901 } 3902 3903 if (info->attrs[NL80211_ATTR_STA_PLINK_STATE]) { 3904 params.plink_state = 3905 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_STATE]); 3906 if (params.plink_state >= NUM_NL80211_PLINK_STATES) 3907 return -EINVAL; 3908 params.sta_modify_mask |= STATION_PARAM_APPLY_PLINK_STATE; 3909 } 3910 3911 if (info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]) { 3912 enum nl80211_mesh_power_mode pm = nla_get_u32( 3913 info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]); 3914 3915 if (pm <= NL80211_MESH_POWER_UNKNOWN || 3916 pm > NL80211_MESH_POWER_MAX) 3917 return -EINVAL; 3918 3919 params.local_pm = pm; 3920 } 3921 3922 /* Include parameters for TDLS peer (will check later) */ 3923 err = nl80211_set_station_tdls(info, ¶ms); 3924 if (err) 3925 return err; 3926 3927 params.vlan = get_vlan(info, rdev); 3928 if (IS_ERR(params.vlan)) 3929 return PTR_ERR(params.vlan); 3930 3931 switch (dev->ieee80211_ptr->iftype) { 3932 case NL80211_IFTYPE_AP: 3933 case NL80211_IFTYPE_AP_VLAN: 3934 case NL80211_IFTYPE_P2P_GO: 3935 case NL80211_IFTYPE_P2P_CLIENT: 3936 case NL80211_IFTYPE_STATION: 3937 case NL80211_IFTYPE_ADHOC: 3938 case NL80211_IFTYPE_MESH_POINT: 3939 break; 3940 default: 3941 err = -EOPNOTSUPP; 3942 goto out_put_vlan; 3943 } 3944 3945 /* driver will call cfg80211_check_station_change() */ 3946 err = rdev_change_station(rdev, dev, mac_addr, ¶ms); 3947 3948 out_put_vlan: 3949 if (params.vlan) 3950 dev_put(params.vlan); 3951 3952 return err; 3953 } 3954 3955 static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info) 3956 { 3957 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 3958 int err; 3959 struct net_device *dev = info->user_ptr[1]; 3960 struct station_parameters params; 3961 u8 *mac_addr = NULL; 3962 3963 memset(¶ms, 0, sizeof(params)); 3964 3965 if (!rdev->ops->add_station) 3966 return -EOPNOTSUPP; 3967 3968 if (!info->attrs[NL80211_ATTR_MAC]) 3969 return -EINVAL; 3970 3971 if (!info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]) 3972 return -EINVAL; 3973 3974 if (!info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) 3975 return -EINVAL; 3976 3977 if (!info->attrs[NL80211_ATTR_STA_AID]) 3978 return -EINVAL; 3979 3980 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]); 3981 params.supported_rates = 3982 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]); 3983 params.supported_rates_len = 3984 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]); 3985 params.listen_interval = 3986 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]); 3987 3988 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]); 3989 if (!params.aid || params.aid > IEEE80211_MAX_AID) 3990 return -EINVAL; 3991 3992 if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) { 3993 params.capability = 3994 nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]); 3995 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY; 3996 } 3997 3998 if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) { 3999 params.ext_capab = 4000 nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]); 4001 params.ext_capab_len = 4002 nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]); 4003 } 4004 4005 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) 4006 params.ht_capa = 4007 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]); 4008 4009 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) 4010 params.vht_capa = 4011 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]); 4012 4013 if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION]) { 4014 params.plink_action = 4015 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]); 4016 if (params.plink_action >= NUM_NL80211_PLINK_ACTIONS) 4017 return -EINVAL; 4018 } 4019 4020 err = nl80211_parse_sta_wme(info, ¶ms); 4021 if (err) 4022 return err; 4023 4024 if (parse_station_flags(info, dev->ieee80211_ptr->iftype, ¶ms)) 4025 return -EINVAL; 4026 4027 /* When you run into this, adjust the code below for the new flag */ 4028 BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7); 4029 4030 switch (dev->ieee80211_ptr->iftype) { 4031 case NL80211_IFTYPE_AP: 4032 case NL80211_IFTYPE_AP_VLAN: 4033 case NL80211_IFTYPE_P2P_GO: 4034 /* ignore WME attributes if iface/sta is not capable */ 4035 if (!(rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) || 4036 !(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME))) 4037 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD; 4038 4039 /* TDLS peers cannot be added */ 4040 if (params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) 4041 return -EINVAL; 4042 /* but don't bother the driver with it */ 4043 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER); 4044 4045 /* allow authenticated/associated only if driver handles it */ 4046 if (!(rdev->wiphy.features & 4047 NL80211_FEATURE_FULL_AP_CLIENT_STATE) && 4048 params.sta_flags_mask & 4049 (BIT(NL80211_STA_FLAG_AUTHENTICATED) | 4050 BIT(NL80211_STA_FLAG_ASSOCIATED))) 4051 return -EINVAL; 4052 4053 /* must be last in here for error handling */ 4054 params.vlan = get_vlan(info, rdev); 4055 if (IS_ERR(params.vlan)) 4056 return PTR_ERR(params.vlan); 4057 break; 4058 case NL80211_IFTYPE_MESH_POINT: 4059 /* ignore uAPSD data */ 4060 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD; 4061 4062 /* associated is disallowed */ 4063 if (params.sta_flags_mask & BIT(NL80211_STA_FLAG_ASSOCIATED)) 4064 return -EINVAL; 4065 /* TDLS peers cannot be added */ 4066 if (params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) 4067 return -EINVAL; 4068 break; 4069 case NL80211_IFTYPE_STATION: 4070 case NL80211_IFTYPE_P2P_CLIENT: 4071 /* ignore uAPSD data */ 4072 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD; 4073 4074 /* these are disallowed */ 4075 if (params.sta_flags_mask & 4076 (BIT(NL80211_STA_FLAG_ASSOCIATED) | 4077 BIT(NL80211_STA_FLAG_AUTHENTICATED))) 4078 return -EINVAL; 4079 /* Only TDLS peers can be added */ 4080 if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))) 4081 return -EINVAL; 4082 /* Can only add if TDLS ... */ 4083 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS)) 4084 return -EOPNOTSUPP; 4085 /* ... with external setup is supported */ 4086 if (!(rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP)) 4087 return -EOPNOTSUPP; 4088 /* 4089 * Older wpa_supplicant versions always mark the TDLS peer 4090 * as authorized, but it shouldn't yet be. 4091 */ 4092 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_AUTHORIZED); 4093 break; 4094 default: 4095 return -EOPNOTSUPP; 4096 } 4097 4098 /* be aware of params.vlan when changing code here */ 4099 4100 err = rdev_add_station(rdev, dev, mac_addr, ¶ms); 4101 4102 if (params.vlan) 4103 dev_put(params.vlan); 4104 return err; 4105 } 4106 4107 static int nl80211_del_station(struct sk_buff *skb, struct genl_info *info) 4108 { 4109 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 4110 struct net_device *dev = info->user_ptr[1]; 4111 u8 *mac_addr = NULL; 4112 4113 if (info->attrs[NL80211_ATTR_MAC]) 4114 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]); 4115 4116 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP && 4117 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN && 4118 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT && 4119 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) 4120 return -EINVAL; 4121 4122 if (!rdev->ops->del_station) 4123 return -EOPNOTSUPP; 4124 4125 return rdev_del_station(rdev, dev, mac_addr); 4126 } 4127 4128 static int nl80211_send_mpath(struct sk_buff *msg, u32 portid, u32 seq, 4129 int flags, struct net_device *dev, 4130 u8 *dst, u8 *next_hop, 4131 struct mpath_info *pinfo) 4132 { 4133 void *hdr; 4134 struct nlattr *pinfoattr; 4135 4136 hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_STATION); 4137 if (!hdr) 4138 return -1; 4139 4140 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) || 4141 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, dst) || 4142 nla_put(msg, NL80211_ATTR_MPATH_NEXT_HOP, ETH_ALEN, next_hop) || 4143 nla_put_u32(msg, NL80211_ATTR_GENERATION, pinfo->generation)) 4144 goto nla_put_failure; 4145 4146 pinfoattr = nla_nest_start(msg, NL80211_ATTR_MPATH_INFO); 4147 if (!pinfoattr) 4148 goto nla_put_failure; 4149 if ((pinfo->filled & MPATH_INFO_FRAME_QLEN) && 4150 nla_put_u32(msg, NL80211_MPATH_INFO_FRAME_QLEN, 4151 pinfo->frame_qlen)) 4152 goto nla_put_failure; 4153 if (((pinfo->filled & MPATH_INFO_SN) && 4154 nla_put_u32(msg, NL80211_MPATH_INFO_SN, pinfo->sn)) || 4155 ((pinfo->filled & MPATH_INFO_METRIC) && 4156 nla_put_u32(msg, NL80211_MPATH_INFO_METRIC, 4157 pinfo->metric)) || 4158 ((pinfo->filled & MPATH_INFO_EXPTIME) && 4159 nla_put_u32(msg, NL80211_MPATH_INFO_EXPTIME, 4160 pinfo->exptime)) || 4161 ((pinfo->filled & MPATH_INFO_FLAGS) && 4162 nla_put_u8(msg, NL80211_MPATH_INFO_FLAGS, 4163 pinfo->flags)) || 4164 ((pinfo->filled & MPATH_INFO_DISCOVERY_TIMEOUT) && 4165 nla_put_u32(msg, NL80211_MPATH_INFO_DISCOVERY_TIMEOUT, 4166 pinfo->discovery_timeout)) || 4167 ((pinfo->filled & MPATH_INFO_DISCOVERY_RETRIES) && 4168 nla_put_u8(msg, NL80211_MPATH_INFO_DISCOVERY_RETRIES, 4169 pinfo->discovery_retries))) 4170 goto nla_put_failure; 4171 4172 nla_nest_end(msg, pinfoattr); 4173 4174 return genlmsg_end(msg, hdr); 4175 4176 nla_put_failure: 4177 genlmsg_cancel(msg, hdr); 4178 return -EMSGSIZE; 4179 } 4180 4181 static int nl80211_dump_mpath(struct sk_buff *skb, 4182 struct netlink_callback *cb) 4183 { 4184 struct mpath_info pinfo; 4185 struct cfg80211_registered_device *dev; 4186 struct wireless_dev *wdev; 4187 u8 dst[ETH_ALEN]; 4188 u8 next_hop[ETH_ALEN]; 4189 int path_idx = cb->args[2]; 4190 int err; 4191 4192 err = nl80211_prepare_wdev_dump(skb, cb, &dev, &wdev); 4193 if (err) 4194 return err; 4195 4196 if (!dev->ops->dump_mpath) { 4197 err = -EOPNOTSUPP; 4198 goto out_err; 4199 } 4200 4201 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) { 4202 err = -EOPNOTSUPP; 4203 goto out_err; 4204 } 4205 4206 while (1) { 4207 err = rdev_dump_mpath(dev, wdev->netdev, path_idx, dst, 4208 next_hop, &pinfo); 4209 if (err == -ENOENT) 4210 break; 4211 if (err) 4212 goto out_err; 4213 4214 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid, 4215 cb->nlh->nlmsg_seq, NLM_F_MULTI, 4216 wdev->netdev, dst, next_hop, 4217 &pinfo) < 0) 4218 goto out; 4219 4220 path_idx++; 4221 } 4222 4223 4224 out: 4225 cb->args[2] = path_idx; 4226 err = skb->len; 4227 out_err: 4228 nl80211_finish_wdev_dump(dev); 4229 return err; 4230 } 4231 4232 static int nl80211_get_mpath(struct sk_buff *skb, struct genl_info *info) 4233 { 4234 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 4235 int err; 4236 struct net_device *dev = info->user_ptr[1]; 4237 struct mpath_info pinfo; 4238 struct sk_buff *msg; 4239 u8 *dst = NULL; 4240 u8 next_hop[ETH_ALEN]; 4241 4242 memset(&pinfo, 0, sizeof(pinfo)); 4243 4244 if (!info->attrs[NL80211_ATTR_MAC]) 4245 return -EINVAL; 4246 4247 dst = nla_data(info->attrs[NL80211_ATTR_MAC]); 4248 4249 if (!rdev->ops->get_mpath) 4250 return -EOPNOTSUPP; 4251 4252 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT) 4253 return -EOPNOTSUPP; 4254 4255 err = rdev_get_mpath(rdev, dev, dst, next_hop, &pinfo); 4256 if (err) 4257 return err; 4258 4259 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 4260 if (!msg) 4261 return -ENOMEM; 4262 4263 if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0, 4264 dev, dst, next_hop, &pinfo) < 0) { 4265 nlmsg_free(msg); 4266 return -ENOBUFS; 4267 } 4268 4269 return genlmsg_reply(msg, info); 4270 } 4271 4272 static int nl80211_set_mpath(struct sk_buff *skb, struct genl_info *info) 4273 { 4274 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 4275 struct net_device *dev = info->user_ptr[1]; 4276 u8 *dst = NULL; 4277 u8 *next_hop = NULL; 4278 4279 if (!info->attrs[NL80211_ATTR_MAC]) 4280 return -EINVAL; 4281 4282 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]) 4283 return -EINVAL; 4284 4285 dst = nla_data(info->attrs[NL80211_ATTR_MAC]); 4286 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]); 4287 4288 if (!rdev->ops->change_mpath) 4289 return -EOPNOTSUPP; 4290 4291 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT) 4292 return -EOPNOTSUPP; 4293 4294 return rdev_change_mpath(rdev, dev, dst, next_hop); 4295 } 4296 4297 static int nl80211_new_mpath(struct sk_buff *skb, struct genl_info *info) 4298 { 4299 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 4300 struct net_device *dev = info->user_ptr[1]; 4301 u8 *dst = NULL; 4302 u8 *next_hop = NULL; 4303 4304 if (!info->attrs[NL80211_ATTR_MAC]) 4305 return -EINVAL; 4306 4307 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]) 4308 return -EINVAL; 4309 4310 dst = nla_data(info->attrs[NL80211_ATTR_MAC]); 4311 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]); 4312 4313 if (!rdev->ops->add_mpath) 4314 return -EOPNOTSUPP; 4315 4316 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT) 4317 return -EOPNOTSUPP; 4318 4319 return rdev_add_mpath(rdev, dev, dst, next_hop); 4320 } 4321 4322 static int nl80211_del_mpath(struct sk_buff *skb, struct genl_info *info) 4323 { 4324 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 4325 struct net_device *dev = info->user_ptr[1]; 4326 u8 *dst = NULL; 4327 4328 if (info->attrs[NL80211_ATTR_MAC]) 4329 dst = nla_data(info->attrs[NL80211_ATTR_MAC]); 4330 4331 if (!rdev->ops->del_mpath) 4332 return -EOPNOTSUPP; 4333 4334 return rdev_del_mpath(rdev, dev, dst); 4335 } 4336 4337 static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info) 4338 { 4339 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 4340 struct net_device *dev = info->user_ptr[1]; 4341 struct bss_parameters params; 4342 4343 memset(¶ms, 0, sizeof(params)); 4344 /* default to not changing parameters */ 4345 params.use_cts_prot = -1; 4346 params.use_short_preamble = -1; 4347 params.use_short_slot_time = -1; 4348 params.ap_isolate = -1; 4349 params.ht_opmode = -1; 4350 params.p2p_ctwindow = -1; 4351 params.p2p_opp_ps = -1; 4352 4353 if (info->attrs[NL80211_ATTR_BSS_CTS_PROT]) 4354 params.use_cts_prot = 4355 nla_get_u8(info->attrs[NL80211_ATTR_BSS_CTS_PROT]); 4356 if (info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]) 4357 params.use_short_preamble = 4358 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]); 4359 if (info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]) 4360 params.use_short_slot_time = 4361 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]); 4362 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) { 4363 params.basic_rates = 4364 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]); 4365 params.basic_rates_len = 4366 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]); 4367 } 4368 if (info->attrs[NL80211_ATTR_AP_ISOLATE]) 4369 params.ap_isolate = !!nla_get_u8(info->attrs[NL80211_ATTR_AP_ISOLATE]); 4370 if (info->attrs[NL80211_ATTR_BSS_HT_OPMODE]) 4371 params.ht_opmode = 4372 nla_get_u16(info->attrs[NL80211_ATTR_BSS_HT_OPMODE]); 4373 4374 if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) { 4375 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) 4376 return -EINVAL; 4377 params.p2p_ctwindow = 4378 nla_get_s8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]); 4379 if (params.p2p_ctwindow < 0) 4380 return -EINVAL; 4381 if (params.p2p_ctwindow != 0 && 4382 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN)) 4383 return -EINVAL; 4384 } 4385 4386 if (info->attrs[NL80211_ATTR_P2P_OPPPS]) { 4387 u8 tmp; 4388 4389 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) 4390 return -EINVAL; 4391 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]); 4392 if (tmp > 1) 4393 return -EINVAL; 4394 params.p2p_opp_ps = tmp; 4395 if (params.p2p_opp_ps && 4396 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS)) 4397 return -EINVAL; 4398 } 4399 4400 if (!rdev->ops->change_bss) 4401 return -EOPNOTSUPP; 4402 4403 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP && 4404 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) 4405 return -EOPNOTSUPP; 4406 4407 return rdev_change_bss(rdev, dev, ¶ms); 4408 } 4409 4410 static const struct nla_policy reg_rule_policy[NL80211_REG_RULE_ATTR_MAX + 1] = { 4411 [NL80211_ATTR_REG_RULE_FLAGS] = { .type = NLA_U32 }, 4412 [NL80211_ATTR_FREQ_RANGE_START] = { .type = NLA_U32 }, 4413 [NL80211_ATTR_FREQ_RANGE_END] = { .type = NLA_U32 }, 4414 [NL80211_ATTR_FREQ_RANGE_MAX_BW] = { .type = NLA_U32 }, 4415 [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN] = { .type = NLA_U32 }, 4416 [NL80211_ATTR_POWER_RULE_MAX_EIRP] = { .type = NLA_U32 }, 4417 }; 4418 4419 static int parse_reg_rule(struct nlattr *tb[], 4420 struct ieee80211_reg_rule *reg_rule) 4421 { 4422 struct ieee80211_freq_range *freq_range = ®_rule->freq_range; 4423 struct ieee80211_power_rule *power_rule = ®_rule->power_rule; 4424 4425 if (!tb[NL80211_ATTR_REG_RULE_FLAGS]) 4426 return -EINVAL; 4427 if (!tb[NL80211_ATTR_FREQ_RANGE_START]) 4428 return -EINVAL; 4429 if (!tb[NL80211_ATTR_FREQ_RANGE_END]) 4430 return -EINVAL; 4431 if (!tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]) 4432 return -EINVAL; 4433 if (!tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]) 4434 return -EINVAL; 4435 4436 reg_rule->flags = nla_get_u32(tb[NL80211_ATTR_REG_RULE_FLAGS]); 4437 4438 freq_range->start_freq_khz = 4439 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]); 4440 freq_range->end_freq_khz = 4441 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]); 4442 freq_range->max_bandwidth_khz = 4443 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]); 4444 4445 power_rule->max_eirp = 4446 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]); 4447 4448 if (tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]) 4449 power_rule->max_antenna_gain = 4450 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]); 4451 4452 return 0; 4453 } 4454 4455 static int nl80211_req_set_reg(struct sk_buff *skb, struct genl_info *info) 4456 { 4457 int r; 4458 char *data = NULL; 4459 enum nl80211_user_reg_hint_type user_reg_hint_type; 4460 4461 /* 4462 * You should only get this when cfg80211 hasn't yet initialized 4463 * completely when built-in to the kernel right between the time 4464 * window between nl80211_init() and regulatory_init(), if that is 4465 * even possible. 4466 */ 4467 if (unlikely(!rcu_access_pointer(cfg80211_regdomain))) 4468 return -EINPROGRESS; 4469 4470 if (!info->attrs[NL80211_ATTR_REG_ALPHA2]) 4471 return -EINVAL; 4472 4473 data = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]); 4474 4475 if (info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE]) 4476 user_reg_hint_type = 4477 nla_get_u32(info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE]); 4478 else 4479 user_reg_hint_type = NL80211_USER_REG_HINT_USER; 4480 4481 switch (user_reg_hint_type) { 4482 case NL80211_USER_REG_HINT_USER: 4483 case NL80211_USER_REG_HINT_CELL_BASE: 4484 break; 4485 default: 4486 return -EINVAL; 4487 } 4488 4489 r = regulatory_hint_user(data, user_reg_hint_type); 4490 4491 return r; 4492 } 4493 4494 static int nl80211_get_mesh_config(struct sk_buff *skb, 4495 struct genl_info *info) 4496 { 4497 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 4498 struct net_device *dev = info->user_ptr[1]; 4499 struct wireless_dev *wdev = dev->ieee80211_ptr; 4500 struct mesh_config cur_params; 4501 int err = 0; 4502 void *hdr; 4503 struct nlattr *pinfoattr; 4504 struct sk_buff *msg; 4505 4506 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) 4507 return -EOPNOTSUPP; 4508 4509 if (!rdev->ops->get_mesh_config) 4510 return -EOPNOTSUPP; 4511 4512 wdev_lock(wdev); 4513 /* If not connected, get default parameters */ 4514 if (!wdev->mesh_id_len) 4515 memcpy(&cur_params, &default_mesh_config, sizeof(cur_params)); 4516 else 4517 err = rdev_get_mesh_config(rdev, dev, &cur_params); 4518 wdev_unlock(wdev); 4519 4520 if (err) 4521 return err; 4522 4523 /* Draw up a netlink message to send back */ 4524 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 4525 if (!msg) 4526 return -ENOMEM; 4527 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0, 4528 NL80211_CMD_GET_MESH_CONFIG); 4529 if (!hdr) 4530 goto out; 4531 pinfoattr = nla_nest_start(msg, NL80211_ATTR_MESH_CONFIG); 4532 if (!pinfoattr) 4533 goto nla_put_failure; 4534 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) || 4535 nla_put_u16(msg, NL80211_MESHCONF_RETRY_TIMEOUT, 4536 cur_params.dot11MeshRetryTimeout) || 4537 nla_put_u16(msg, NL80211_MESHCONF_CONFIRM_TIMEOUT, 4538 cur_params.dot11MeshConfirmTimeout) || 4539 nla_put_u16(msg, NL80211_MESHCONF_HOLDING_TIMEOUT, 4540 cur_params.dot11MeshHoldingTimeout) || 4541 nla_put_u16(msg, NL80211_MESHCONF_MAX_PEER_LINKS, 4542 cur_params.dot11MeshMaxPeerLinks) || 4543 nla_put_u8(msg, NL80211_MESHCONF_MAX_RETRIES, 4544 cur_params.dot11MeshMaxRetries) || 4545 nla_put_u8(msg, NL80211_MESHCONF_TTL, 4546 cur_params.dot11MeshTTL) || 4547 nla_put_u8(msg, NL80211_MESHCONF_ELEMENT_TTL, 4548 cur_params.element_ttl) || 4549 nla_put_u8(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS, 4550 cur_params.auto_open_plinks) || 4551 nla_put_u32(msg, NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR, 4552 cur_params.dot11MeshNbrOffsetMaxNeighbor) || 4553 nla_put_u8(msg, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES, 4554 cur_params.dot11MeshHWMPmaxPREQretries) || 4555 nla_put_u32(msg, NL80211_MESHCONF_PATH_REFRESH_TIME, 4556 cur_params.path_refresh_time) || 4557 nla_put_u16(msg, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT, 4558 cur_params.min_discovery_timeout) || 4559 nla_put_u32(msg, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT, 4560 cur_params.dot11MeshHWMPactivePathTimeout) || 4561 nla_put_u16(msg, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL, 4562 cur_params.dot11MeshHWMPpreqMinInterval) || 4563 nla_put_u16(msg, NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL, 4564 cur_params.dot11MeshHWMPperrMinInterval) || 4565 nla_put_u16(msg, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME, 4566 cur_params.dot11MeshHWMPnetDiameterTraversalTime) || 4567 nla_put_u8(msg, NL80211_MESHCONF_HWMP_ROOTMODE, 4568 cur_params.dot11MeshHWMPRootMode) || 4569 nla_put_u16(msg, NL80211_MESHCONF_HWMP_RANN_INTERVAL, 4570 cur_params.dot11MeshHWMPRannInterval) || 4571 nla_put_u8(msg, NL80211_MESHCONF_GATE_ANNOUNCEMENTS, 4572 cur_params.dot11MeshGateAnnouncementProtocol) || 4573 nla_put_u8(msg, NL80211_MESHCONF_FORWARDING, 4574 cur_params.dot11MeshForwarding) || 4575 nla_put_u32(msg, NL80211_MESHCONF_RSSI_THRESHOLD, 4576 cur_params.rssi_threshold) || 4577 nla_put_u32(msg, NL80211_MESHCONF_HT_OPMODE, 4578 cur_params.ht_opmode) || 4579 nla_put_u32(msg, NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT, 4580 cur_params.dot11MeshHWMPactivePathToRootTimeout) || 4581 nla_put_u16(msg, NL80211_MESHCONF_HWMP_ROOT_INTERVAL, 4582 cur_params.dot11MeshHWMProotInterval) || 4583 nla_put_u16(msg, NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL, 4584 cur_params.dot11MeshHWMPconfirmationInterval) || 4585 nla_put_u32(msg, NL80211_MESHCONF_POWER_MODE, 4586 cur_params.power_mode) || 4587 nla_put_u16(msg, NL80211_MESHCONF_AWAKE_WINDOW, 4588 cur_params.dot11MeshAwakeWindowDuration)) 4589 goto nla_put_failure; 4590 nla_nest_end(msg, pinfoattr); 4591 genlmsg_end(msg, hdr); 4592 return genlmsg_reply(msg, info); 4593 4594 nla_put_failure: 4595 genlmsg_cancel(msg, hdr); 4596 out: 4597 nlmsg_free(msg); 4598 return -ENOBUFS; 4599 } 4600 4601 static const struct nla_policy nl80211_meshconf_params_policy[NL80211_MESHCONF_ATTR_MAX+1] = { 4602 [NL80211_MESHCONF_RETRY_TIMEOUT] = { .type = NLA_U16 }, 4603 [NL80211_MESHCONF_CONFIRM_TIMEOUT] = { .type = NLA_U16 }, 4604 [NL80211_MESHCONF_HOLDING_TIMEOUT] = { .type = NLA_U16 }, 4605 [NL80211_MESHCONF_MAX_PEER_LINKS] = { .type = NLA_U16 }, 4606 [NL80211_MESHCONF_MAX_RETRIES] = { .type = NLA_U8 }, 4607 [NL80211_MESHCONF_TTL] = { .type = NLA_U8 }, 4608 [NL80211_MESHCONF_ELEMENT_TTL] = { .type = NLA_U8 }, 4609 [NL80211_MESHCONF_AUTO_OPEN_PLINKS] = { .type = NLA_U8 }, 4610 [NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR] = { .type = NLA_U32 }, 4611 [NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES] = { .type = NLA_U8 }, 4612 [NL80211_MESHCONF_PATH_REFRESH_TIME] = { .type = NLA_U32 }, 4613 [NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT] = { .type = NLA_U16 }, 4614 [NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT] = { .type = NLA_U32 }, 4615 [NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL] = { .type = NLA_U16 }, 4616 [NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL] = { .type = NLA_U16 }, 4617 [NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME] = { .type = NLA_U16 }, 4618 [NL80211_MESHCONF_HWMP_ROOTMODE] = { .type = NLA_U8 }, 4619 [NL80211_MESHCONF_HWMP_RANN_INTERVAL] = { .type = NLA_U16 }, 4620 [NL80211_MESHCONF_GATE_ANNOUNCEMENTS] = { .type = NLA_U8 }, 4621 [NL80211_MESHCONF_FORWARDING] = { .type = NLA_U8 }, 4622 [NL80211_MESHCONF_RSSI_THRESHOLD] = { .type = NLA_U32 }, 4623 [NL80211_MESHCONF_HT_OPMODE] = { .type = NLA_U16 }, 4624 [NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT] = { .type = NLA_U32 }, 4625 [NL80211_MESHCONF_HWMP_ROOT_INTERVAL] = { .type = NLA_U16 }, 4626 [NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL] = { .type = NLA_U16 }, 4627 [NL80211_MESHCONF_POWER_MODE] = { .type = NLA_U32 }, 4628 [NL80211_MESHCONF_AWAKE_WINDOW] = { .type = NLA_U16 }, 4629 }; 4630 4631 static const struct nla_policy 4632 nl80211_mesh_setup_params_policy[NL80211_MESH_SETUP_ATTR_MAX+1] = { 4633 [NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC] = { .type = NLA_U8 }, 4634 [NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL] = { .type = NLA_U8 }, 4635 [NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC] = { .type = NLA_U8 }, 4636 [NL80211_MESH_SETUP_USERSPACE_AUTH] = { .type = NLA_FLAG }, 4637 [NL80211_MESH_SETUP_USERSPACE_MPM] = { .type = NLA_FLAG }, 4638 [NL80211_MESH_SETUP_IE] = { .type = NLA_BINARY, 4639 .len = IEEE80211_MAX_DATA_LEN }, 4640 [NL80211_MESH_SETUP_USERSPACE_AMPE] = { .type = NLA_FLAG }, 4641 }; 4642 4643 static int nl80211_parse_mesh_config(struct genl_info *info, 4644 struct mesh_config *cfg, 4645 u32 *mask_out) 4646 { 4647 struct nlattr *tb[NL80211_MESHCONF_ATTR_MAX + 1]; 4648 u32 mask = 0; 4649 4650 #define FILL_IN_MESH_PARAM_IF_SET(tb, cfg, param, min, max, mask, attr, fn) \ 4651 do { \ 4652 if (tb[attr]) { \ 4653 if (fn(tb[attr]) < min || fn(tb[attr]) > max) \ 4654 return -EINVAL; \ 4655 cfg->param = fn(tb[attr]); \ 4656 mask |= (1 << (attr - 1)); \ 4657 } \ 4658 } while (0) 4659 4660 4661 if (!info->attrs[NL80211_ATTR_MESH_CONFIG]) 4662 return -EINVAL; 4663 if (nla_parse_nested(tb, NL80211_MESHCONF_ATTR_MAX, 4664 info->attrs[NL80211_ATTR_MESH_CONFIG], 4665 nl80211_meshconf_params_policy)) 4666 return -EINVAL; 4667 4668 /* This makes sure that there aren't more than 32 mesh config 4669 * parameters (otherwise our bitfield scheme would not work.) */ 4670 BUILD_BUG_ON(NL80211_MESHCONF_ATTR_MAX > 32); 4671 4672 /* Fill in the params struct */ 4673 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshRetryTimeout, 1, 255, 4674 mask, NL80211_MESHCONF_RETRY_TIMEOUT, 4675 nla_get_u16); 4676 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConfirmTimeout, 1, 255, 4677 mask, NL80211_MESHCONF_CONFIRM_TIMEOUT, 4678 nla_get_u16); 4679 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHoldingTimeout, 1, 255, 4680 mask, NL80211_MESHCONF_HOLDING_TIMEOUT, 4681 nla_get_u16); 4682 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxPeerLinks, 0, 255, 4683 mask, NL80211_MESHCONF_MAX_PEER_LINKS, 4684 nla_get_u16); 4685 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxRetries, 0, 16, 4686 mask, NL80211_MESHCONF_MAX_RETRIES, 4687 nla_get_u8); 4688 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshTTL, 1, 255, 4689 mask, NL80211_MESHCONF_TTL, nla_get_u8); 4690 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, element_ttl, 1, 255, 4691 mask, NL80211_MESHCONF_ELEMENT_TTL, 4692 nla_get_u8); 4693 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, auto_open_plinks, 0, 1, 4694 mask, NL80211_MESHCONF_AUTO_OPEN_PLINKS, 4695 nla_get_u8); 4696 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshNbrOffsetMaxNeighbor, 4697 1, 255, mask, 4698 NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR, 4699 nla_get_u32); 4700 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPmaxPREQretries, 0, 255, 4701 mask, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES, 4702 nla_get_u8); 4703 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, path_refresh_time, 1, 65535, 4704 mask, NL80211_MESHCONF_PATH_REFRESH_TIME, 4705 nla_get_u32); 4706 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, min_discovery_timeout, 1, 65535, 4707 mask, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT, 4708 nla_get_u16); 4709 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathTimeout, 4710 1, 65535, mask, 4711 NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT, 4712 nla_get_u32); 4713 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPpreqMinInterval, 4714 1, 65535, mask, 4715 NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL, 4716 nla_get_u16); 4717 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPperrMinInterval, 4718 1, 65535, mask, 4719 NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL, 4720 nla_get_u16); 4721 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, 4722 dot11MeshHWMPnetDiameterTraversalTime, 4723 1, 65535, mask, 4724 NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME, 4725 nla_get_u16); 4726 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRootMode, 0, 4, 4727 mask, NL80211_MESHCONF_HWMP_ROOTMODE, 4728 nla_get_u8); 4729 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRannInterval, 1, 65535, 4730 mask, NL80211_MESHCONF_HWMP_RANN_INTERVAL, 4731 nla_get_u16); 4732 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, 4733 dot11MeshGateAnnouncementProtocol, 0, 1, 4734 mask, NL80211_MESHCONF_GATE_ANNOUNCEMENTS, 4735 nla_get_u8); 4736 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshForwarding, 0, 1, 4737 mask, NL80211_MESHCONF_FORWARDING, 4738 nla_get_u8); 4739 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, rssi_threshold, 1, 255, 4740 mask, NL80211_MESHCONF_RSSI_THRESHOLD, 4741 nla_get_u32); 4742 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, ht_opmode, 0, 16, 4743 mask, NL80211_MESHCONF_HT_OPMODE, 4744 nla_get_u16); 4745 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathToRootTimeout, 4746 1, 65535, mask, 4747 NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT, 4748 nla_get_u32); 4749 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMProotInterval, 1, 65535, 4750 mask, NL80211_MESHCONF_HWMP_ROOT_INTERVAL, 4751 nla_get_u16); 4752 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, 4753 dot11MeshHWMPconfirmationInterval, 4754 1, 65535, mask, 4755 NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL, 4756 nla_get_u16); 4757 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, power_mode, 4758 NL80211_MESH_POWER_ACTIVE, 4759 NL80211_MESH_POWER_MAX, 4760 mask, NL80211_MESHCONF_POWER_MODE, 4761 nla_get_u32); 4762 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshAwakeWindowDuration, 4763 0, 65535, mask, 4764 NL80211_MESHCONF_AWAKE_WINDOW, nla_get_u16); 4765 if (mask_out) 4766 *mask_out = mask; 4767 4768 return 0; 4769 4770 #undef FILL_IN_MESH_PARAM_IF_SET 4771 } 4772 4773 static int nl80211_parse_mesh_setup(struct genl_info *info, 4774 struct mesh_setup *setup) 4775 { 4776 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 4777 struct nlattr *tb[NL80211_MESH_SETUP_ATTR_MAX + 1]; 4778 4779 if (!info->attrs[NL80211_ATTR_MESH_SETUP]) 4780 return -EINVAL; 4781 if (nla_parse_nested(tb, NL80211_MESH_SETUP_ATTR_MAX, 4782 info->attrs[NL80211_ATTR_MESH_SETUP], 4783 nl80211_mesh_setup_params_policy)) 4784 return -EINVAL; 4785 4786 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC]) 4787 setup->sync_method = 4788 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])) ? 4789 IEEE80211_SYNC_METHOD_VENDOR : 4790 IEEE80211_SYNC_METHOD_NEIGHBOR_OFFSET; 4791 4792 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL]) 4793 setup->path_sel_proto = 4794 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])) ? 4795 IEEE80211_PATH_PROTOCOL_VENDOR : 4796 IEEE80211_PATH_PROTOCOL_HWMP; 4797 4798 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC]) 4799 setup->path_metric = 4800 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])) ? 4801 IEEE80211_PATH_METRIC_VENDOR : 4802 IEEE80211_PATH_METRIC_AIRTIME; 4803 4804 4805 if (tb[NL80211_MESH_SETUP_IE]) { 4806 struct nlattr *ieattr = 4807 tb[NL80211_MESH_SETUP_IE]; 4808 if (!is_valid_ie_attr(ieattr)) 4809 return -EINVAL; 4810 setup->ie = nla_data(ieattr); 4811 setup->ie_len = nla_len(ieattr); 4812 } 4813 if (tb[NL80211_MESH_SETUP_USERSPACE_MPM] && 4814 !(rdev->wiphy.features & NL80211_FEATURE_USERSPACE_MPM)) 4815 return -EINVAL; 4816 setup->user_mpm = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_MPM]); 4817 setup->is_authenticated = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AUTH]); 4818 setup->is_secure = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AMPE]); 4819 if (setup->is_secure) 4820 setup->user_mpm = true; 4821 4822 return 0; 4823 } 4824 4825 static int nl80211_update_mesh_config(struct sk_buff *skb, 4826 struct genl_info *info) 4827 { 4828 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 4829 struct net_device *dev = info->user_ptr[1]; 4830 struct wireless_dev *wdev = dev->ieee80211_ptr; 4831 struct mesh_config cfg; 4832 u32 mask; 4833 int err; 4834 4835 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) 4836 return -EOPNOTSUPP; 4837 4838 if (!rdev->ops->update_mesh_config) 4839 return -EOPNOTSUPP; 4840 4841 err = nl80211_parse_mesh_config(info, &cfg, &mask); 4842 if (err) 4843 return err; 4844 4845 wdev_lock(wdev); 4846 if (!wdev->mesh_id_len) 4847 err = -ENOLINK; 4848 4849 if (!err) 4850 err = rdev_update_mesh_config(rdev, dev, mask, &cfg); 4851 4852 wdev_unlock(wdev); 4853 4854 return err; 4855 } 4856 4857 static int nl80211_get_reg(struct sk_buff *skb, struct genl_info *info) 4858 { 4859 const struct ieee80211_regdomain *regdom; 4860 struct sk_buff *msg; 4861 void *hdr = NULL; 4862 struct nlattr *nl_reg_rules; 4863 unsigned int i; 4864 int err = -EINVAL; 4865 4866 mutex_lock(&cfg80211_mutex); 4867 4868 if (!cfg80211_regdomain) 4869 goto out; 4870 4871 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 4872 if (!msg) { 4873 err = -ENOBUFS; 4874 goto out; 4875 } 4876 4877 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0, 4878 NL80211_CMD_GET_REG); 4879 if (!hdr) 4880 goto put_failure; 4881 4882 if (reg_last_request_cell_base() && 4883 nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE, 4884 NL80211_USER_REG_HINT_CELL_BASE)) 4885 goto nla_put_failure; 4886 4887 rcu_read_lock(); 4888 regdom = rcu_dereference(cfg80211_regdomain); 4889 4890 if (nla_put_string(msg, NL80211_ATTR_REG_ALPHA2, regdom->alpha2) || 4891 (regdom->dfs_region && 4892 nla_put_u8(msg, NL80211_ATTR_DFS_REGION, regdom->dfs_region))) 4893 goto nla_put_failure_rcu; 4894 4895 nl_reg_rules = nla_nest_start(msg, NL80211_ATTR_REG_RULES); 4896 if (!nl_reg_rules) 4897 goto nla_put_failure_rcu; 4898 4899 for (i = 0; i < regdom->n_reg_rules; i++) { 4900 struct nlattr *nl_reg_rule; 4901 const struct ieee80211_reg_rule *reg_rule; 4902 const struct ieee80211_freq_range *freq_range; 4903 const struct ieee80211_power_rule *power_rule; 4904 4905 reg_rule = ®dom->reg_rules[i]; 4906 freq_range = ®_rule->freq_range; 4907 power_rule = ®_rule->power_rule; 4908 4909 nl_reg_rule = nla_nest_start(msg, i); 4910 if (!nl_reg_rule) 4911 goto nla_put_failure_rcu; 4912 4913 if (nla_put_u32(msg, NL80211_ATTR_REG_RULE_FLAGS, 4914 reg_rule->flags) || 4915 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_START, 4916 freq_range->start_freq_khz) || 4917 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_END, 4918 freq_range->end_freq_khz) || 4919 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_MAX_BW, 4920 freq_range->max_bandwidth_khz) || 4921 nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN, 4922 power_rule->max_antenna_gain) || 4923 nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_EIRP, 4924 power_rule->max_eirp)) 4925 goto nla_put_failure_rcu; 4926 4927 nla_nest_end(msg, nl_reg_rule); 4928 } 4929 rcu_read_unlock(); 4930 4931 nla_nest_end(msg, nl_reg_rules); 4932 4933 genlmsg_end(msg, hdr); 4934 err = genlmsg_reply(msg, info); 4935 goto out; 4936 4937 nla_put_failure_rcu: 4938 rcu_read_unlock(); 4939 nla_put_failure: 4940 genlmsg_cancel(msg, hdr); 4941 put_failure: 4942 nlmsg_free(msg); 4943 err = -EMSGSIZE; 4944 out: 4945 mutex_unlock(&cfg80211_mutex); 4946 return err; 4947 } 4948 4949 static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info) 4950 { 4951 struct nlattr *tb[NL80211_REG_RULE_ATTR_MAX + 1]; 4952 struct nlattr *nl_reg_rule; 4953 char *alpha2 = NULL; 4954 int rem_reg_rules = 0, r = 0; 4955 u32 num_rules = 0, rule_idx = 0, size_of_regd; 4956 u8 dfs_region = 0; 4957 struct ieee80211_regdomain *rd = NULL; 4958 4959 if (!info->attrs[NL80211_ATTR_REG_ALPHA2]) 4960 return -EINVAL; 4961 4962 if (!info->attrs[NL80211_ATTR_REG_RULES]) 4963 return -EINVAL; 4964 4965 alpha2 = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]); 4966 4967 if (info->attrs[NL80211_ATTR_DFS_REGION]) 4968 dfs_region = nla_get_u8(info->attrs[NL80211_ATTR_DFS_REGION]); 4969 4970 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES], 4971 rem_reg_rules) { 4972 num_rules++; 4973 if (num_rules > NL80211_MAX_SUPP_REG_RULES) 4974 return -EINVAL; 4975 } 4976 4977 size_of_regd = sizeof(struct ieee80211_regdomain) + 4978 num_rules * sizeof(struct ieee80211_reg_rule); 4979 4980 rd = kzalloc(size_of_regd, GFP_KERNEL); 4981 if (!rd) 4982 return -ENOMEM; 4983 4984 rd->n_reg_rules = num_rules; 4985 rd->alpha2[0] = alpha2[0]; 4986 rd->alpha2[1] = alpha2[1]; 4987 4988 /* 4989 * Disable DFS master mode if the DFS region was 4990 * not supported or known on this kernel. 4991 */ 4992 if (reg_supported_dfs_region(dfs_region)) 4993 rd->dfs_region = dfs_region; 4994 4995 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES], 4996 rem_reg_rules) { 4997 nla_parse(tb, NL80211_REG_RULE_ATTR_MAX, 4998 nla_data(nl_reg_rule), nla_len(nl_reg_rule), 4999 reg_rule_policy); 5000 r = parse_reg_rule(tb, &rd->reg_rules[rule_idx]); 5001 if (r) 5002 goto bad_reg; 5003 5004 rule_idx++; 5005 5006 if (rule_idx > NL80211_MAX_SUPP_REG_RULES) { 5007 r = -EINVAL; 5008 goto bad_reg; 5009 } 5010 } 5011 5012 mutex_lock(&cfg80211_mutex); 5013 5014 r = set_regdom(rd); 5015 /* set_regdom took ownership */ 5016 rd = NULL; 5017 mutex_unlock(&cfg80211_mutex); 5018 5019 bad_reg: 5020 kfree(rd); 5021 return r; 5022 } 5023 5024 static int validate_scan_freqs(struct nlattr *freqs) 5025 { 5026 struct nlattr *attr1, *attr2; 5027 int n_channels = 0, tmp1, tmp2; 5028 5029 nla_for_each_nested(attr1, freqs, tmp1) { 5030 n_channels++; 5031 /* 5032 * Some hardware has a limited channel list for 5033 * scanning, and it is pretty much nonsensical 5034 * to scan for a channel twice, so disallow that 5035 * and don't require drivers to check that the 5036 * channel list they get isn't longer than what 5037 * they can scan, as long as they can scan all 5038 * the channels they registered at once. 5039 */ 5040 nla_for_each_nested(attr2, freqs, tmp2) 5041 if (attr1 != attr2 && 5042 nla_get_u32(attr1) == nla_get_u32(attr2)) 5043 return 0; 5044 } 5045 5046 return n_channels; 5047 } 5048 5049 static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info) 5050 { 5051 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 5052 struct wireless_dev *wdev = info->user_ptr[1]; 5053 struct cfg80211_scan_request *request; 5054 struct nlattr *attr; 5055 struct wiphy *wiphy; 5056 int err, tmp, n_ssids = 0, n_channels, i; 5057 size_t ie_len; 5058 5059 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE])) 5060 return -EINVAL; 5061 5062 wiphy = &rdev->wiphy; 5063 5064 if (!rdev->ops->scan) 5065 return -EOPNOTSUPP; 5066 5067 mutex_lock(&rdev->sched_scan_mtx); 5068 if (rdev->scan_req) { 5069 err = -EBUSY; 5070 goto unlock; 5071 } 5072 5073 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) { 5074 n_channels = validate_scan_freqs( 5075 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]); 5076 if (!n_channels) { 5077 err = -EINVAL; 5078 goto unlock; 5079 } 5080 } else { 5081 enum ieee80211_band band; 5082 n_channels = 0; 5083 5084 for (band = 0; band < IEEE80211_NUM_BANDS; band++) 5085 if (wiphy->bands[band]) 5086 n_channels += wiphy->bands[band]->n_channels; 5087 } 5088 5089 if (info->attrs[NL80211_ATTR_SCAN_SSIDS]) 5090 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) 5091 n_ssids++; 5092 5093 if (n_ssids > wiphy->max_scan_ssids) { 5094 err = -EINVAL; 5095 goto unlock; 5096 } 5097 5098 if (info->attrs[NL80211_ATTR_IE]) 5099 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); 5100 else 5101 ie_len = 0; 5102 5103 if (ie_len > wiphy->max_scan_ie_len) { 5104 err = -EINVAL; 5105 goto unlock; 5106 } 5107 5108 request = kzalloc(sizeof(*request) 5109 + sizeof(*request->ssids) * n_ssids 5110 + sizeof(*request->channels) * n_channels 5111 + ie_len, GFP_KERNEL); 5112 if (!request) { 5113 err = -ENOMEM; 5114 goto unlock; 5115 } 5116 5117 if (n_ssids) 5118 request->ssids = (void *)&request->channels[n_channels]; 5119 request->n_ssids = n_ssids; 5120 if (ie_len) { 5121 if (request->ssids) 5122 request->ie = (void *)(request->ssids + n_ssids); 5123 else 5124 request->ie = (void *)(request->channels + n_channels); 5125 } 5126 5127 i = 0; 5128 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) { 5129 /* user specified, bail out if channel not found */ 5130 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_FREQUENCIES], tmp) { 5131 struct ieee80211_channel *chan; 5132 5133 chan = ieee80211_get_channel(wiphy, nla_get_u32(attr)); 5134 5135 if (!chan) { 5136 err = -EINVAL; 5137 goto out_free; 5138 } 5139 5140 /* ignore disabled channels */ 5141 if (chan->flags & IEEE80211_CHAN_DISABLED) 5142 continue; 5143 5144 request->channels[i] = chan; 5145 i++; 5146 } 5147 } else { 5148 enum ieee80211_band band; 5149 5150 /* all channels */ 5151 for (band = 0; band < IEEE80211_NUM_BANDS; band++) { 5152 int j; 5153 if (!wiphy->bands[band]) 5154 continue; 5155 for (j = 0; j < wiphy->bands[band]->n_channels; j++) { 5156 struct ieee80211_channel *chan; 5157 5158 chan = &wiphy->bands[band]->channels[j]; 5159 5160 if (chan->flags & IEEE80211_CHAN_DISABLED) 5161 continue; 5162 5163 request->channels[i] = chan; 5164 i++; 5165 } 5166 } 5167 } 5168 5169 if (!i) { 5170 err = -EINVAL; 5171 goto out_free; 5172 } 5173 5174 request->n_channels = i; 5175 5176 i = 0; 5177 if (info->attrs[NL80211_ATTR_SCAN_SSIDS]) { 5178 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) { 5179 if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) { 5180 err = -EINVAL; 5181 goto out_free; 5182 } 5183 request->ssids[i].ssid_len = nla_len(attr); 5184 memcpy(request->ssids[i].ssid, nla_data(attr), nla_len(attr)); 5185 i++; 5186 } 5187 } 5188 5189 if (info->attrs[NL80211_ATTR_IE]) { 5190 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); 5191 memcpy((void *)request->ie, 5192 nla_data(info->attrs[NL80211_ATTR_IE]), 5193 request->ie_len); 5194 } 5195 5196 for (i = 0; i < IEEE80211_NUM_BANDS; i++) 5197 if (wiphy->bands[i]) 5198 request->rates[i] = 5199 (1 << wiphy->bands[i]->n_bitrates) - 1; 5200 5201 if (info->attrs[NL80211_ATTR_SCAN_SUPP_RATES]) { 5202 nla_for_each_nested(attr, 5203 info->attrs[NL80211_ATTR_SCAN_SUPP_RATES], 5204 tmp) { 5205 enum ieee80211_band band = nla_type(attr); 5206 5207 if (band < 0 || band >= IEEE80211_NUM_BANDS) { 5208 err = -EINVAL; 5209 goto out_free; 5210 } 5211 err = ieee80211_get_ratemask(wiphy->bands[band], 5212 nla_data(attr), 5213 nla_len(attr), 5214 &request->rates[band]); 5215 if (err) 5216 goto out_free; 5217 } 5218 } 5219 5220 if (info->attrs[NL80211_ATTR_SCAN_FLAGS]) { 5221 request->flags = nla_get_u32( 5222 info->attrs[NL80211_ATTR_SCAN_FLAGS]); 5223 if (((request->flags & NL80211_SCAN_FLAG_LOW_PRIORITY) && 5224 !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) || 5225 ((request->flags & NL80211_SCAN_FLAG_FLUSH) && 5226 !(wiphy->features & NL80211_FEATURE_SCAN_FLUSH))) { 5227 err = -EOPNOTSUPP; 5228 goto out_free; 5229 } 5230 } 5231 5232 request->no_cck = 5233 nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]); 5234 5235 request->wdev = wdev; 5236 request->wiphy = &rdev->wiphy; 5237 request->scan_start = jiffies; 5238 5239 rdev->scan_req = request; 5240 err = rdev_scan(rdev, request); 5241 5242 if (!err) { 5243 nl80211_send_scan_start(rdev, wdev); 5244 if (wdev->netdev) 5245 dev_hold(wdev->netdev); 5246 } else { 5247 out_free: 5248 rdev->scan_req = NULL; 5249 kfree(request); 5250 } 5251 5252 unlock: 5253 mutex_unlock(&rdev->sched_scan_mtx); 5254 return err; 5255 } 5256 5257 static int nl80211_start_sched_scan(struct sk_buff *skb, 5258 struct genl_info *info) 5259 { 5260 struct cfg80211_sched_scan_request *request; 5261 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 5262 struct net_device *dev = info->user_ptr[1]; 5263 struct nlattr *attr; 5264 struct wiphy *wiphy; 5265 int err, tmp, n_ssids = 0, n_match_sets = 0, n_channels, i; 5266 u32 interval; 5267 enum ieee80211_band band; 5268 size_t ie_len; 5269 struct nlattr *tb[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1]; 5270 5271 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) || 5272 !rdev->ops->sched_scan_start) 5273 return -EOPNOTSUPP; 5274 5275 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE])) 5276 return -EINVAL; 5277 5278 if (!info->attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL]) 5279 return -EINVAL; 5280 5281 interval = nla_get_u32(info->attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL]); 5282 if (interval == 0) 5283 return -EINVAL; 5284 5285 wiphy = &rdev->wiphy; 5286 5287 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) { 5288 n_channels = validate_scan_freqs( 5289 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]); 5290 if (!n_channels) 5291 return -EINVAL; 5292 } else { 5293 n_channels = 0; 5294 5295 for (band = 0; band < IEEE80211_NUM_BANDS; band++) 5296 if (wiphy->bands[band]) 5297 n_channels += wiphy->bands[band]->n_channels; 5298 } 5299 5300 if (info->attrs[NL80211_ATTR_SCAN_SSIDS]) 5301 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], 5302 tmp) 5303 n_ssids++; 5304 5305 if (n_ssids > wiphy->max_sched_scan_ssids) 5306 return -EINVAL; 5307 5308 if (info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) 5309 nla_for_each_nested(attr, 5310 info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH], 5311 tmp) 5312 n_match_sets++; 5313 5314 if (n_match_sets > wiphy->max_match_sets) 5315 return -EINVAL; 5316 5317 if (info->attrs[NL80211_ATTR_IE]) 5318 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); 5319 else 5320 ie_len = 0; 5321 5322 if (ie_len > wiphy->max_sched_scan_ie_len) 5323 return -EINVAL; 5324 5325 mutex_lock(&rdev->sched_scan_mtx); 5326 5327 if (rdev->sched_scan_req) { 5328 err = -EINPROGRESS; 5329 goto out; 5330 } 5331 5332 request = kzalloc(sizeof(*request) 5333 + sizeof(*request->ssids) * n_ssids 5334 + sizeof(*request->match_sets) * n_match_sets 5335 + sizeof(*request->channels) * n_channels 5336 + ie_len, GFP_KERNEL); 5337 if (!request) { 5338 err = -ENOMEM; 5339 goto out; 5340 } 5341 5342 if (n_ssids) 5343 request->ssids = (void *)&request->channels[n_channels]; 5344 request->n_ssids = n_ssids; 5345 if (ie_len) { 5346 if (request->ssids) 5347 request->ie = (void *)(request->ssids + n_ssids); 5348 else 5349 request->ie = (void *)(request->channels + n_channels); 5350 } 5351 5352 if (n_match_sets) { 5353 if (request->ie) 5354 request->match_sets = (void *)(request->ie + ie_len); 5355 else if (request->ssids) 5356 request->match_sets = 5357 (void *)(request->ssids + n_ssids); 5358 else 5359 request->match_sets = 5360 (void *)(request->channels + n_channels); 5361 } 5362 request->n_match_sets = n_match_sets; 5363 5364 i = 0; 5365 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) { 5366 /* user specified, bail out if channel not found */ 5367 nla_for_each_nested(attr, 5368 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES], 5369 tmp) { 5370 struct ieee80211_channel *chan; 5371 5372 chan = ieee80211_get_channel(wiphy, nla_get_u32(attr)); 5373 5374 if (!chan) { 5375 err = -EINVAL; 5376 goto out_free; 5377 } 5378 5379 /* ignore disabled channels */ 5380 if (chan->flags & IEEE80211_CHAN_DISABLED) 5381 continue; 5382 5383 request->channels[i] = chan; 5384 i++; 5385 } 5386 } else { 5387 /* all channels */ 5388 for (band = 0; band < IEEE80211_NUM_BANDS; band++) { 5389 int j; 5390 if (!wiphy->bands[band]) 5391 continue; 5392 for (j = 0; j < wiphy->bands[band]->n_channels; j++) { 5393 struct ieee80211_channel *chan; 5394 5395 chan = &wiphy->bands[band]->channels[j]; 5396 5397 if (chan->flags & IEEE80211_CHAN_DISABLED) 5398 continue; 5399 5400 request->channels[i] = chan; 5401 i++; 5402 } 5403 } 5404 } 5405 5406 if (!i) { 5407 err = -EINVAL; 5408 goto out_free; 5409 } 5410 5411 request->n_channels = i; 5412 5413 i = 0; 5414 if (info->attrs[NL80211_ATTR_SCAN_SSIDS]) { 5415 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], 5416 tmp) { 5417 if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) { 5418 err = -EINVAL; 5419 goto out_free; 5420 } 5421 request->ssids[i].ssid_len = nla_len(attr); 5422 memcpy(request->ssids[i].ssid, nla_data(attr), 5423 nla_len(attr)); 5424 i++; 5425 } 5426 } 5427 5428 i = 0; 5429 if (info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) { 5430 nla_for_each_nested(attr, 5431 info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH], 5432 tmp) { 5433 struct nlattr *ssid, *rssi; 5434 5435 nla_parse(tb, NL80211_SCHED_SCAN_MATCH_ATTR_MAX, 5436 nla_data(attr), nla_len(attr), 5437 nl80211_match_policy); 5438 ssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID]; 5439 if (ssid) { 5440 if (nla_len(ssid) > IEEE80211_MAX_SSID_LEN) { 5441 err = -EINVAL; 5442 goto out_free; 5443 } 5444 memcpy(request->match_sets[i].ssid.ssid, 5445 nla_data(ssid), nla_len(ssid)); 5446 request->match_sets[i].ssid.ssid_len = 5447 nla_len(ssid); 5448 } 5449 rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI]; 5450 if (rssi) 5451 request->rssi_thold = nla_get_u32(rssi); 5452 else 5453 request->rssi_thold = 5454 NL80211_SCAN_RSSI_THOLD_OFF; 5455 i++; 5456 } 5457 } 5458 5459 if (info->attrs[NL80211_ATTR_IE]) { 5460 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); 5461 memcpy((void *)request->ie, 5462 nla_data(info->attrs[NL80211_ATTR_IE]), 5463 request->ie_len); 5464 } 5465 5466 if (info->attrs[NL80211_ATTR_SCAN_FLAGS]) { 5467 request->flags = nla_get_u32( 5468 info->attrs[NL80211_ATTR_SCAN_FLAGS]); 5469 if (((request->flags & NL80211_SCAN_FLAG_LOW_PRIORITY) && 5470 !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) || 5471 ((request->flags & NL80211_SCAN_FLAG_FLUSH) && 5472 !(wiphy->features & NL80211_FEATURE_SCAN_FLUSH))) { 5473 err = -EOPNOTSUPP; 5474 goto out_free; 5475 } 5476 } 5477 5478 request->dev = dev; 5479 request->wiphy = &rdev->wiphy; 5480 request->interval = interval; 5481 request->scan_start = jiffies; 5482 5483 err = rdev_sched_scan_start(rdev, dev, request); 5484 if (!err) { 5485 rdev->sched_scan_req = request; 5486 nl80211_send_sched_scan(rdev, dev, 5487 NL80211_CMD_START_SCHED_SCAN); 5488 goto out; 5489 } 5490 5491 out_free: 5492 kfree(request); 5493 out: 5494 mutex_unlock(&rdev->sched_scan_mtx); 5495 return err; 5496 } 5497 5498 static int nl80211_stop_sched_scan(struct sk_buff *skb, 5499 struct genl_info *info) 5500 { 5501 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 5502 int err; 5503 5504 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) || 5505 !rdev->ops->sched_scan_stop) 5506 return -EOPNOTSUPP; 5507 5508 mutex_lock(&rdev->sched_scan_mtx); 5509 err = __cfg80211_stop_sched_scan(rdev, false); 5510 mutex_unlock(&rdev->sched_scan_mtx); 5511 5512 return err; 5513 } 5514 5515 static int nl80211_start_radar_detection(struct sk_buff *skb, 5516 struct genl_info *info) 5517 { 5518 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 5519 struct net_device *dev = info->user_ptr[1]; 5520 struct wireless_dev *wdev = dev->ieee80211_ptr; 5521 struct cfg80211_chan_def chandef; 5522 int err; 5523 5524 err = nl80211_parse_chandef(rdev, info, &chandef); 5525 if (err) 5526 return err; 5527 5528 if (wdev->cac_started) 5529 return -EBUSY; 5530 5531 err = cfg80211_chandef_dfs_required(wdev->wiphy, &chandef); 5532 if (err < 0) 5533 return err; 5534 5535 if (err == 0) 5536 return -EINVAL; 5537 5538 if (chandef.chan->dfs_state != NL80211_DFS_USABLE) 5539 return -EINVAL; 5540 5541 if (!rdev->ops->start_radar_detection) 5542 return -EOPNOTSUPP; 5543 5544 mutex_lock(&rdev->devlist_mtx); 5545 err = cfg80211_can_use_iftype_chan(rdev, wdev, wdev->iftype, 5546 chandef.chan, CHAN_MODE_SHARED, 5547 BIT(chandef.width)); 5548 if (err) 5549 goto err_locked; 5550 5551 err = rdev->ops->start_radar_detection(&rdev->wiphy, dev, &chandef); 5552 if (!err) { 5553 wdev->channel = chandef.chan; 5554 wdev->cac_started = true; 5555 wdev->cac_start_time = jiffies; 5556 } 5557 err_locked: 5558 mutex_unlock(&rdev->devlist_mtx); 5559 5560 return err; 5561 } 5562 5563 static int nl80211_send_bss(struct sk_buff *msg, struct netlink_callback *cb, 5564 u32 seq, int flags, 5565 struct cfg80211_registered_device *rdev, 5566 struct wireless_dev *wdev, 5567 struct cfg80211_internal_bss *intbss) 5568 { 5569 struct cfg80211_bss *res = &intbss->pub; 5570 const struct cfg80211_bss_ies *ies; 5571 void *hdr; 5572 struct nlattr *bss; 5573 bool tsf = false; 5574 5575 ASSERT_WDEV_LOCK(wdev); 5576 5577 hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags, 5578 NL80211_CMD_NEW_SCAN_RESULTS); 5579 if (!hdr) 5580 return -1; 5581 5582 genl_dump_check_consistent(cb, hdr, &nl80211_fam); 5583 5584 if (nla_put_u32(msg, NL80211_ATTR_GENERATION, rdev->bss_generation)) 5585 goto nla_put_failure; 5586 if (wdev->netdev && 5587 nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex)) 5588 goto nla_put_failure; 5589 if (nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev))) 5590 goto nla_put_failure; 5591 5592 bss = nla_nest_start(msg, NL80211_ATTR_BSS); 5593 if (!bss) 5594 goto nla_put_failure; 5595 if ((!is_zero_ether_addr(res->bssid) && 5596 nla_put(msg, NL80211_BSS_BSSID, ETH_ALEN, res->bssid))) 5597 goto nla_put_failure; 5598 5599 rcu_read_lock(); 5600 ies = rcu_dereference(res->ies); 5601 if (ies) { 5602 if (nla_put_u64(msg, NL80211_BSS_TSF, ies->tsf)) 5603 goto fail_unlock_rcu; 5604 tsf = true; 5605 if (ies->len && nla_put(msg, NL80211_BSS_INFORMATION_ELEMENTS, 5606 ies->len, ies->data)) 5607 goto fail_unlock_rcu; 5608 } 5609 ies = rcu_dereference(res->beacon_ies); 5610 if (ies) { 5611 if (!tsf && nla_put_u64(msg, NL80211_BSS_TSF, ies->tsf)) 5612 goto fail_unlock_rcu; 5613 if (ies->len && nla_put(msg, NL80211_BSS_BEACON_IES, 5614 ies->len, ies->data)) 5615 goto fail_unlock_rcu; 5616 } 5617 rcu_read_unlock(); 5618 5619 if (res->beacon_interval && 5620 nla_put_u16(msg, NL80211_BSS_BEACON_INTERVAL, res->beacon_interval)) 5621 goto nla_put_failure; 5622 if (nla_put_u16(msg, NL80211_BSS_CAPABILITY, res->capability) || 5623 nla_put_u32(msg, NL80211_BSS_FREQUENCY, res->channel->center_freq) || 5624 nla_put_u32(msg, NL80211_BSS_SEEN_MS_AGO, 5625 jiffies_to_msecs(jiffies - intbss->ts))) 5626 goto nla_put_failure; 5627 5628 switch (rdev->wiphy.signal_type) { 5629 case CFG80211_SIGNAL_TYPE_MBM: 5630 if (nla_put_u32(msg, NL80211_BSS_SIGNAL_MBM, res->signal)) 5631 goto nla_put_failure; 5632 break; 5633 case CFG80211_SIGNAL_TYPE_UNSPEC: 5634 if (nla_put_u8(msg, NL80211_BSS_SIGNAL_UNSPEC, res->signal)) 5635 goto nla_put_failure; 5636 break; 5637 default: 5638 break; 5639 } 5640 5641 switch (wdev->iftype) { 5642 case NL80211_IFTYPE_P2P_CLIENT: 5643 case NL80211_IFTYPE_STATION: 5644 if (intbss == wdev->current_bss && 5645 nla_put_u32(msg, NL80211_BSS_STATUS, 5646 NL80211_BSS_STATUS_ASSOCIATED)) 5647 goto nla_put_failure; 5648 break; 5649 case NL80211_IFTYPE_ADHOC: 5650 if (intbss == wdev->current_bss && 5651 nla_put_u32(msg, NL80211_BSS_STATUS, 5652 NL80211_BSS_STATUS_IBSS_JOINED)) 5653 goto nla_put_failure; 5654 break; 5655 default: 5656 break; 5657 } 5658 5659 nla_nest_end(msg, bss); 5660 5661 return genlmsg_end(msg, hdr); 5662 5663 fail_unlock_rcu: 5664 rcu_read_unlock(); 5665 nla_put_failure: 5666 genlmsg_cancel(msg, hdr); 5667 return -EMSGSIZE; 5668 } 5669 5670 static int nl80211_dump_scan(struct sk_buff *skb, struct netlink_callback *cb) 5671 { 5672 struct cfg80211_registered_device *rdev; 5673 struct cfg80211_internal_bss *scan; 5674 struct wireless_dev *wdev; 5675 int start = cb->args[2], idx = 0; 5676 int err; 5677 5678 err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev); 5679 if (err) 5680 return err; 5681 5682 wdev_lock(wdev); 5683 spin_lock_bh(&rdev->bss_lock); 5684 cfg80211_bss_expire(rdev); 5685 5686 cb->seq = rdev->bss_generation; 5687 5688 list_for_each_entry(scan, &rdev->bss_list, list) { 5689 if (++idx <= start) 5690 continue; 5691 if (nl80211_send_bss(skb, cb, 5692 cb->nlh->nlmsg_seq, NLM_F_MULTI, 5693 rdev, wdev, scan) < 0) { 5694 idx--; 5695 break; 5696 } 5697 } 5698 5699 spin_unlock_bh(&rdev->bss_lock); 5700 wdev_unlock(wdev); 5701 5702 cb->args[2] = idx; 5703 nl80211_finish_wdev_dump(rdev); 5704 5705 return skb->len; 5706 } 5707 5708 static int nl80211_send_survey(struct sk_buff *msg, u32 portid, u32 seq, 5709 int flags, struct net_device *dev, 5710 struct survey_info *survey) 5711 { 5712 void *hdr; 5713 struct nlattr *infoattr; 5714 5715 hdr = nl80211hdr_put(msg, portid, seq, flags, 5716 NL80211_CMD_NEW_SURVEY_RESULTS); 5717 if (!hdr) 5718 return -ENOMEM; 5719 5720 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex)) 5721 goto nla_put_failure; 5722 5723 infoattr = nla_nest_start(msg, NL80211_ATTR_SURVEY_INFO); 5724 if (!infoattr) 5725 goto nla_put_failure; 5726 5727 if (nla_put_u32(msg, NL80211_SURVEY_INFO_FREQUENCY, 5728 survey->channel->center_freq)) 5729 goto nla_put_failure; 5730 5731 if ((survey->filled & SURVEY_INFO_NOISE_DBM) && 5732 nla_put_u8(msg, NL80211_SURVEY_INFO_NOISE, survey->noise)) 5733 goto nla_put_failure; 5734 if ((survey->filled & SURVEY_INFO_IN_USE) && 5735 nla_put_flag(msg, NL80211_SURVEY_INFO_IN_USE)) 5736 goto nla_put_failure; 5737 if ((survey->filled & SURVEY_INFO_CHANNEL_TIME) && 5738 nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME, 5739 survey->channel_time)) 5740 goto nla_put_failure; 5741 if ((survey->filled & SURVEY_INFO_CHANNEL_TIME_BUSY) && 5742 nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_BUSY, 5743 survey->channel_time_busy)) 5744 goto nla_put_failure; 5745 if ((survey->filled & SURVEY_INFO_CHANNEL_TIME_EXT_BUSY) && 5746 nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_EXT_BUSY, 5747 survey->channel_time_ext_busy)) 5748 goto nla_put_failure; 5749 if ((survey->filled & SURVEY_INFO_CHANNEL_TIME_RX) && 5750 nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_RX, 5751 survey->channel_time_rx)) 5752 goto nla_put_failure; 5753 if ((survey->filled & SURVEY_INFO_CHANNEL_TIME_TX) && 5754 nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_TX, 5755 survey->channel_time_tx)) 5756 goto nla_put_failure; 5757 5758 nla_nest_end(msg, infoattr); 5759 5760 return genlmsg_end(msg, hdr); 5761 5762 nla_put_failure: 5763 genlmsg_cancel(msg, hdr); 5764 return -EMSGSIZE; 5765 } 5766 5767 static int nl80211_dump_survey(struct sk_buff *skb, 5768 struct netlink_callback *cb) 5769 { 5770 struct survey_info survey; 5771 struct cfg80211_registered_device *dev; 5772 struct wireless_dev *wdev; 5773 int survey_idx = cb->args[2]; 5774 int res; 5775 5776 res = nl80211_prepare_wdev_dump(skb, cb, &dev, &wdev); 5777 if (res) 5778 return res; 5779 5780 if (!wdev->netdev) { 5781 res = -EINVAL; 5782 goto out_err; 5783 } 5784 5785 if (!dev->ops->dump_survey) { 5786 res = -EOPNOTSUPP; 5787 goto out_err; 5788 } 5789 5790 while (1) { 5791 struct ieee80211_channel *chan; 5792 5793 res = rdev_dump_survey(dev, wdev->netdev, survey_idx, &survey); 5794 if (res == -ENOENT) 5795 break; 5796 if (res) 5797 goto out_err; 5798 5799 /* Survey without a channel doesn't make sense */ 5800 if (!survey.channel) { 5801 res = -EINVAL; 5802 goto out; 5803 } 5804 5805 chan = ieee80211_get_channel(&dev->wiphy, 5806 survey.channel->center_freq); 5807 if (!chan || chan->flags & IEEE80211_CHAN_DISABLED) { 5808 survey_idx++; 5809 continue; 5810 } 5811 5812 if (nl80211_send_survey(skb, 5813 NETLINK_CB(cb->skb).portid, 5814 cb->nlh->nlmsg_seq, NLM_F_MULTI, 5815 wdev->netdev, &survey) < 0) 5816 goto out; 5817 survey_idx++; 5818 } 5819 5820 out: 5821 cb->args[2] = survey_idx; 5822 res = skb->len; 5823 out_err: 5824 nl80211_finish_wdev_dump(dev); 5825 return res; 5826 } 5827 5828 static bool nl80211_valid_wpa_versions(u32 wpa_versions) 5829 { 5830 return !(wpa_versions & ~(NL80211_WPA_VERSION_1 | 5831 NL80211_WPA_VERSION_2)); 5832 } 5833 5834 static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info) 5835 { 5836 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 5837 struct net_device *dev = info->user_ptr[1]; 5838 struct ieee80211_channel *chan; 5839 const u8 *bssid, *ssid, *ie = NULL, *sae_data = NULL; 5840 int err, ssid_len, ie_len = 0, sae_data_len = 0; 5841 enum nl80211_auth_type auth_type; 5842 struct key_parse key; 5843 bool local_state_change; 5844 5845 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE])) 5846 return -EINVAL; 5847 5848 if (!info->attrs[NL80211_ATTR_MAC]) 5849 return -EINVAL; 5850 5851 if (!info->attrs[NL80211_ATTR_AUTH_TYPE]) 5852 return -EINVAL; 5853 5854 if (!info->attrs[NL80211_ATTR_SSID]) 5855 return -EINVAL; 5856 5857 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ]) 5858 return -EINVAL; 5859 5860 err = nl80211_parse_key(info, &key); 5861 if (err) 5862 return err; 5863 5864 if (key.idx >= 0) { 5865 if (key.type != -1 && key.type != NL80211_KEYTYPE_GROUP) 5866 return -EINVAL; 5867 if (!key.p.key || !key.p.key_len) 5868 return -EINVAL; 5869 if ((key.p.cipher != WLAN_CIPHER_SUITE_WEP40 || 5870 key.p.key_len != WLAN_KEY_LEN_WEP40) && 5871 (key.p.cipher != WLAN_CIPHER_SUITE_WEP104 || 5872 key.p.key_len != WLAN_KEY_LEN_WEP104)) 5873 return -EINVAL; 5874 if (key.idx > 4) 5875 return -EINVAL; 5876 } else { 5877 key.p.key_len = 0; 5878 key.p.key = NULL; 5879 } 5880 5881 if (key.idx >= 0) { 5882 int i; 5883 bool ok = false; 5884 for (i = 0; i < rdev->wiphy.n_cipher_suites; i++) { 5885 if (key.p.cipher == rdev->wiphy.cipher_suites[i]) { 5886 ok = true; 5887 break; 5888 } 5889 } 5890 if (!ok) 5891 return -EINVAL; 5892 } 5893 5894 if (!rdev->ops->auth) 5895 return -EOPNOTSUPP; 5896 5897 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION && 5898 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) 5899 return -EOPNOTSUPP; 5900 5901 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]); 5902 chan = ieee80211_get_channel(&rdev->wiphy, 5903 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ])); 5904 if (!chan || (chan->flags & IEEE80211_CHAN_DISABLED)) 5905 return -EINVAL; 5906 5907 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]); 5908 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]); 5909 5910 if (info->attrs[NL80211_ATTR_IE]) { 5911 ie = nla_data(info->attrs[NL80211_ATTR_IE]); 5912 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); 5913 } 5914 5915 auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]); 5916 if (!nl80211_valid_auth_type(rdev, auth_type, NL80211_CMD_AUTHENTICATE)) 5917 return -EINVAL; 5918 5919 if (auth_type == NL80211_AUTHTYPE_SAE && 5920 !info->attrs[NL80211_ATTR_SAE_DATA]) 5921 return -EINVAL; 5922 5923 if (info->attrs[NL80211_ATTR_SAE_DATA]) { 5924 if (auth_type != NL80211_AUTHTYPE_SAE) 5925 return -EINVAL; 5926 sae_data = nla_data(info->attrs[NL80211_ATTR_SAE_DATA]); 5927 sae_data_len = nla_len(info->attrs[NL80211_ATTR_SAE_DATA]); 5928 /* need to include at least Auth Transaction and Status Code */ 5929 if (sae_data_len < 4) 5930 return -EINVAL; 5931 } 5932 5933 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE]; 5934 5935 /* 5936 * Since we no longer track auth state, ignore 5937 * requests to only change local state. 5938 */ 5939 if (local_state_change) 5940 return 0; 5941 5942 return cfg80211_mlme_auth(rdev, dev, chan, auth_type, bssid, 5943 ssid, ssid_len, ie, ie_len, 5944 key.p.key, key.p.key_len, key.idx, 5945 sae_data, sae_data_len); 5946 } 5947 5948 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev, 5949 struct genl_info *info, 5950 struct cfg80211_crypto_settings *settings, 5951 int cipher_limit) 5952 { 5953 memset(settings, 0, sizeof(*settings)); 5954 5955 settings->control_port = info->attrs[NL80211_ATTR_CONTROL_PORT]; 5956 5957 if (info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) { 5958 u16 proto; 5959 proto = nla_get_u16( 5960 info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]); 5961 settings->control_port_ethertype = cpu_to_be16(proto); 5962 if (!(rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) && 5963 proto != ETH_P_PAE) 5964 return -EINVAL; 5965 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT]) 5966 settings->control_port_no_encrypt = true; 5967 } else 5968 settings->control_port_ethertype = cpu_to_be16(ETH_P_PAE); 5969 5970 if (info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]) { 5971 void *data; 5972 int len, i; 5973 5974 data = nla_data(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]); 5975 len = nla_len(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]); 5976 settings->n_ciphers_pairwise = len / sizeof(u32); 5977 5978 if (len % sizeof(u32)) 5979 return -EINVAL; 5980 5981 if (settings->n_ciphers_pairwise > cipher_limit) 5982 return -EINVAL; 5983 5984 memcpy(settings->ciphers_pairwise, data, len); 5985 5986 for (i = 0; i < settings->n_ciphers_pairwise; i++) 5987 if (!cfg80211_supported_cipher_suite( 5988 &rdev->wiphy, 5989 settings->ciphers_pairwise[i])) 5990 return -EINVAL; 5991 } 5992 5993 if (info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]) { 5994 settings->cipher_group = 5995 nla_get_u32(info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]); 5996 if (!cfg80211_supported_cipher_suite(&rdev->wiphy, 5997 settings->cipher_group)) 5998 return -EINVAL; 5999 } 6000 6001 if (info->attrs[NL80211_ATTR_WPA_VERSIONS]) { 6002 settings->wpa_versions = 6003 nla_get_u32(info->attrs[NL80211_ATTR_WPA_VERSIONS]); 6004 if (!nl80211_valid_wpa_versions(settings->wpa_versions)) 6005 return -EINVAL; 6006 } 6007 6008 if (info->attrs[NL80211_ATTR_AKM_SUITES]) { 6009 void *data; 6010 int len; 6011 6012 data = nla_data(info->attrs[NL80211_ATTR_AKM_SUITES]); 6013 len = nla_len(info->attrs[NL80211_ATTR_AKM_SUITES]); 6014 settings->n_akm_suites = len / sizeof(u32); 6015 6016 if (len % sizeof(u32)) 6017 return -EINVAL; 6018 6019 if (settings->n_akm_suites > NL80211_MAX_NR_AKM_SUITES) 6020 return -EINVAL; 6021 6022 memcpy(settings->akm_suites, data, len); 6023 } 6024 6025 return 0; 6026 } 6027 6028 static int nl80211_associate(struct sk_buff *skb, struct genl_info *info) 6029 { 6030 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 6031 struct net_device *dev = info->user_ptr[1]; 6032 struct ieee80211_channel *chan; 6033 struct cfg80211_assoc_request req = {}; 6034 const u8 *bssid, *ssid; 6035 int err, ssid_len = 0; 6036 6037 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE])) 6038 return -EINVAL; 6039 6040 if (!info->attrs[NL80211_ATTR_MAC] || 6041 !info->attrs[NL80211_ATTR_SSID] || 6042 !info->attrs[NL80211_ATTR_WIPHY_FREQ]) 6043 return -EINVAL; 6044 6045 if (!rdev->ops->assoc) 6046 return -EOPNOTSUPP; 6047 6048 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION && 6049 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) 6050 return -EOPNOTSUPP; 6051 6052 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]); 6053 6054 chan = ieee80211_get_channel(&rdev->wiphy, 6055 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ])); 6056 if (!chan || (chan->flags & IEEE80211_CHAN_DISABLED)) 6057 return -EINVAL; 6058 6059 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]); 6060 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]); 6061 6062 if (info->attrs[NL80211_ATTR_IE]) { 6063 req.ie = nla_data(info->attrs[NL80211_ATTR_IE]); 6064 req.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); 6065 } 6066 6067 if (info->attrs[NL80211_ATTR_USE_MFP]) { 6068 enum nl80211_mfp mfp = 6069 nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]); 6070 if (mfp == NL80211_MFP_REQUIRED) 6071 req.use_mfp = true; 6072 else if (mfp != NL80211_MFP_NO) 6073 return -EINVAL; 6074 } 6075 6076 if (info->attrs[NL80211_ATTR_PREV_BSSID]) 6077 req.prev_bssid = nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]); 6078 6079 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT])) 6080 req.flags |= ASSOC_REQ_DISABLE_HT; 6081 6082 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) 6083 memcpy(&req.ht_capa_mask, 6084 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]), 6085 sizeof(req.ht_capa_mask)); 6086 6087 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) { 6088 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) 6089 return -EINVAL; 6090 memcpy(&req.ht_capa, 6091 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]), 6092 sizeof(req.ht_capa)); 6093 } 6094 6095 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT])) 6096 req.flags |= ASSOC_REQ_DISABLE_VHT; 6097 6098 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]) 6099 memcpy(&req.vht_capa_mask, 6100 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]), 6101 sizeof(req.vht_capa_mask)); 6102 6103 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) { 6104 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]) 6105 return -EINVAL; 6106 memcpy(&req.vht_capa, 6107 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]), 6108 sizeof(req.vht_capa)); 6109 } 6110 6111 err = nl80211_crypto_settings(rdev, info, &req.crypto, 1); 6112 if (!err) 6113 err = cfg80211_mlme_assoc(rdev, dev, chan, bssid, 6114 ssid, ssid_len, &req); 6115 6116 return err; 6117 } 6118 6119 static int nl80211_deauthenticate(struct sk_buff *skb, struct genl_info *info) 6120 { 6121 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 6122 struct net_device *dev = info->user_ptr[1]; 6123 const u8 *ie = NULL, *bssid; 6124 int ie_len = 0; 6125 u16 reason_code; 6126 bool local_state_change; 6127 6128 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE])) 6129 return -EINVAL; 6130 6131 if (!info->attrs[NL80211_ATTR_MAC]) 6132 return -EINVAL; 6133 6134 if (!info->attrs[NL80211_ATTR_REASON_CODE]) 6135 return -EINVAL; 6136 6137 if (!rdev->ops->deauth) 6138 return -EOPNOTSUPP; 6139 6140 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION && 6141 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) 6142 return -EOPNOTSUPP; 6143 6144 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]); 6145 6146 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]); 6147 if (reason_code == 0) { 6148 /* Reason Code 0 is reserved */ 6149 return -EINVAL; 6150 } 6151 6152 if (info->attrs[NL80211_ATTR_IE]) { 6153 ie = nla_data(info->attrs[NL80211_ATTR_IE]); 6154 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); 6155 } 6156 6157 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE]; 6158 6159 return cfg80211_mlme_deauth(rdev, dev, bssid, ie, ie_len, reason_code, 6160 local_state_change); 6161 } 6162 6163 static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info) 6164 { 6165 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 6166 struct net_device *dev = info->user_ptr[1]; 6167 const u8 *ie = NULL, *bssid; 6168 int ie_len = 0; 6169 u16 reason_code; 6170 bool local_state_change; 6171 6172 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE])) 6173 return -EINVAL; 6174 6175 if (!info->attrs[NL80211_ATTR_MAC]) 6176 return -EINVAL; 6177 6178 if (!info->attrs[NL80211_ATTR_REASON_CODE]) 6179 return -EINVAL; 6180 6181 if (!rdev->ops->disassoc) 6182 return -EOPNOTSUPP; 6183 6184 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION && 6185 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) 6186 return -EOPNOTSUPP; 6187 6188 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]); 6189 6190 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]); 6191 if (reason_code == 0) { 6192 /* Reason Code 0 is reserved */ 6193 return -EINVAL; 6194 } 6195 6196 if (info->attrs[NL80211_ATTR_IE]) { 6197 ie = nla_data(info->attrs[NL80211_ATTR_IE]); 6198 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); 6199 } 6200 6201 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE]; 6202 6203 return cfg80211_mlme_disassoc(rdev, dev, bssid, ie, ie_len, reason_code, 6204 local_state_change); 6205 } 6206 6207 static bool 6208 nl80211_parse_mcast_rate(struct cfg80211_registered_device *rdev, 6209 int mcast_rate[IEEE80211_NUM_BANDS], 6210 int rateval) 6211 { 6212 struct wiphy *wiphy = &rdev->wiphy; 6213 bool found = false; 6214 int band, i; 6215 6216 for (band = 0; band < IEEE80211_NUM_BANDS; band++) { 6217 struct ieee80211_supported_band *sband; 6218 6219 sband = wiphy->bands[band]; 6220 if (!sband) 6221 continue; 6222 6223 for (i = 0; i < sband->n_bitrates; i++) { 6224 if (sband->bitrates[i].bitrate == rateval) { 6225 mcast_rate[band] = i + 1; 6226 found = true; 6227 break; 6228 } 6229 } 6230 } 6231 6232 return found; 6233 } 6234 6235 static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info) 6236 { 6237 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 6238 struct net_device *dev = info->user_ptr[1]; 6239 struct cfg80211_ibss_params ibss; 6240 struct wiphy *wiphy; 6241 struct cfg80211_cached_keys *connkeys = NULL; 6242 int err; 6243 6244 memset(&ibss, 0, sizeof(ibss)); 6245 6246 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE])) 6247 return -EINVAL; 6248 6249 if (!info->attrs[NL80211_ATTR_SSID] || 6250 !nla_len(info->attrs[NL80211_ATTR_SSID])) 6251 return -EINVAL; 6252 6253 ibss.beacon_interval = 100; 6254 6255 if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) { 6256 ibss.beacon_interval = 6257 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]); 6258 if (ibss.beacon_interval < 1 || ibss.beacon_interval > 10000) 6259 return -EINVAL; 6260 } 6261 6262 if (!rdev->ops->join_ibss) 6263 return -EOPNOTSUPP; 6264 6265 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC) 6266 return -EOPNOTSUPP; 6267 6268 wiphy = &rdev->wiphy; 6269 6270 if (info->attrs[NL80211_ATTR_MAC]) { 6271 ibss.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]); 6272 6273 if (!is_valid_ether_addr(ibss.bssid)) 6274 return -EINVAL; 6275 } 6276 ibss.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]); 6277 ibss.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]); 6278 6279 if (info->attrs[NL80211_ATTR_IE]) { 6280 ibss.ie = nla_data(info->attrs[NL80211_ATTR_IE]); 6281 ibss.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); 6282 } 6283 6284 err = nl80211_parse_chandef(rdev, info, &ibss.chandef); 6285 if (err) 6286 return err; 6287 6288 if (!cfg80211_reg_can_beacon(&rdev->wiphy, &ibss.chandef)) 6289 return -EINVAL; 6290 6291 if (ibss.chandef.width > NL80211_CHAN_WIDTH_40) 6292 return -EINVAL; 6293 if (ibss.chandef.width != NL80211_CHAN_WIDTH_20_NOHT && 6294 !(rdev->wiphy.features & NL80211_FEATURE_HT_IBSS)) 6295 return -EINVAL; 6296 6297 ibss.channel_fixed = !!info->attrs[NL80211_ATTR_FREQ_FIXED]; 6298 ibss.privacy = !!info->attrs[NL80211_ATTR_PRIVACY]; 6299 6300 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) { 6301 u8 *rates = 6302 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]); 6303 int n_rates = 6304 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]); 6305 struct ieee80211_supported_band *sband = 6306 wiphy->bands[ibss.chandef.chan->band]; 6307 6308 err = ieee80211_get_ratemask(sband, rates, n_rates, 6309 &ibss.basic_rates); 6310 if (err) 6311 return err; 6312 } 6313 6314 if (info->attrs[NL80211_ATTR_MCAST_RATE] && 6315 !nl80211_parse_mcast_rate(rdev, ibss.mcast_rate, 6316 nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE]))) 6317 return -EINVAL; 6318 6319 if (ibss.privacy && info->attrs[NL80211_ATTR_KEYS]) { 6320 bool no_ht = false; 6321 6322 connkeys = nl80211_parse_connkeys(rdev, 6323 info->attrs[NL80211_ATTR_KEYS], 6324 &no_ht); 6325 if (IS_ERR(connkeys)) 6326 return PTR_ERR(connkeys); 6327 6328 if ((ibss.chandef.width != NL80211_CHAN_WIDTH_20_NOHT) && 6329 no_ht) { 6330 kfree(connkeys); 6331 return -EINVAL; 6332 } 6333 } 6334 6335 ibss.control_port = 6336 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT]); 6337 6338 err = cfg80211_join_ibss(rdev, dev, &ibss, connkeys); 6339 if (err) 6340 kfree(connkeys); 6341 return err; 6342 } 6343 6344 static int nl80211_leave_ibss(struct sk_buff *skb, struct genl_info *info) 6345 { 6346 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 6347 struct net_device *dev = info->user_ptr[1]; 6348 6349 if (!rdev->ops->leave_ibss) 6350 return -EOPNOTSUPP; 6351 6352 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC) 6353 return -EOPNOTSUPP; 6354 6355 return cfg80211_leave_ibss(rdev, dev, false); 6356 } 6357 6358 static int nl80211_set_mcast_rate(struct sk_buff *skb, struct genl_info *info) 6359 { 6360 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 6361 struct net_device *dev = info->user_ptr[1]; 6362 int mcast_rate[IEEE80211_NUM_BANDS]; 6363 u32 nla_rate; 6364 int err; 6365 6366 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC && 6367 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT) 6368 return -EOPNOTSUPP; 6369 6370 if (!rdev->ops->set_mcast_rate) 6371 return -EOPNOTSUPP; 6372 6373 memset(mcast_rate, 0, sizeof(mcast_rate)); 6374 6375 if (!info->attrs[NL80211_ATTR_MCAST_RATE]) 6376 return -EINVAL; 6377 6378 nla_rate = nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE]); 6379 if (!nl80211_parse_mcast_rate(rdev, mcast_rate, nla_rate)) 6380 return -EINVAL; 6381 6382 err = rdev->ops->set_mcast_rate(&rdev->wiphy, dev, mcast_rate); 6383 6384 return err; 6385 } 6386 6387 6388 #ifdef CONFIG_NL80211_TESTMODE 6389 static struct genl_multicast_group nl80211_testmode_mcgrp = { 6390 .name = "testmode", 6391 }; 6392 6393 static int nl80211_testmode_do(struct sk_buff *skb, struct genl_info *info) 6394 { 6395 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 6396 int err; 6397 6398 if (!info->attrs[NL80211_ATTR_TESTDATA]) 6399 return -EINVAL; 6400 6401 err = -EOPNOTSUPP; 6402 if (rdev->ops->testmode_cmd) { 6403 rdev->testmode_info = info; 6404 err = rdev_testmode_cmd(rdev, 6405 nla_data(info->attrs[NL80211_ATTR_TESTDATA]), 6406 nla_len(info->attrs[NL80211_ATTR_TESTDATA])); 6407 rdev->testmode_info = NULL; 6408 } 6409 6410 return err; 6411 } 6412 6413 static int nl80211_testmode_dump(struct sk_buff *skb, 6414 struct netlink_callback *cb) 6415 { 6416 struct cfg80211_registered_device *rdev; 6417 int err; 6418 long phy_idx; 6419 void *data = NULL; 6420 int data_len = 0; 6421 6422 if (cb->args[0]) { 6423 /* 6424 * 0 is a valid index, but not valid for args[0], 6425 * so we need to offset by 1. 6426 */ 6427 phy_idx = cb->args[0] - 1; 6428 } else { 6429 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize, 6430 nl80211_fam.attrbuf, nl80211_fam.maxattr, 6431 nl80211_policy); 6432 if (err) 6433 return err; 6434 6435 mutex_lock(&cfg80211_mutex); 6436 rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk), 6437 nl80211_fam.attrbuf); 6438 if (IS_ERR(rdev)) { 6439 mutex_unlock(&cfg80211_mutex); 6440 return PTR_ERR(rdev); 6441 } 6442 phy_idx = rdev->wiphy_idx; 6443 rdev = NULL; 6444 mutex_unlock(&cfg80211_mutex); 6445 6446 if (nl80211_fam.attrbuf[NL80211_ATTR_TESTDATA]) 6447 cb->args[1] = 6448 (long)nl80211_fam.attrbuf[NL80211_ATTR_TESTDATA]; 6449 } 6450 6451 if (cb->args[1]) { 6452 data = nla_data((void *)cb->args[1]); 6453 data_len = nla_len((void *)cb->args[1]); 6454 } 6455 6456 mutex_lock(&cfg80211_mutex); 6457 rdev = cfg80211_rdev_by_wiphy_idx(phy_idx); 6458 if (!rdev) { 6459 mutex_unlock(&cfg80211_mutex); 6460 return -ENOENT; 6461 } 6462 cfg80211_lock_rdev(rdev); 6463 mutex_unlock(&cfg80211_mutex); 6464 6465 if (!rdev->ops->testmode_dump) { 6466 err = -EOPNOTSUPP; 6467 goto out_err; 6468 } 6469 6470 while (1) { 6471 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid, 6472 cb->nlh->nlmsg_seq, NLM_F_MULTI, 6473 NL80211_CMD_TESTMODE); 6474 struct nlattr *tmdata; 6475 6476 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, phy_idx)) { 6477 genlmsg_cancel(skb, hdr); 6478 break; 6479 } 6480 6481 tmdata = nla_nest_start(skb, NL80211_ATTR_TESTDATA); 6482 if (!tmdata) { 6483 genlmsg_cancel(skb, hdr); 6484 break; 6485 } 6486 err = rdev_testmode_dump(rdev, skb, cb, data, data_len); 6487 nla_nest_end(skb, tmdata); 6488 6489 if (err == -ENOBUFS || err == -ENOENT) { 6490 genlmsg_cancel(skb, hdr); 6491 break; 6492 } else if (err) { 6493 genlmsg_cancel(skb, hdr); 6494 goto out_err; 6495 } 6496 6497 genlmsg_end(skb, hdr); 6498 } 6499 6500 err = skb->len; 6501 /* see above */ 6502 cb->args[0] = phy_idx + 1; 6503 out_err: 6504 cfg80211_unlock_rdev(rdev); 6505 return err; 6506 } 6507 6508 static struct sk_buff * 6509 __cfg80211_testmode_alloc_skb(struct cfg80211_registered_device *rdev, 6510 int approxlen, u32 portid, u32 seq, gfp_t gfp) 6511 { 6512 struct sk_buff *skb; 6513 void *hdr; 6514 struct nlattr *data; 6515 6516 skb = nlmsg_new(approxlen + 100, gfp); 6517 if (!skb) 6518 return NULL; 6519 6520 hdr = nl80211hdr_put(skb, portid, seq, 0, NL80211_CMD_TESTMODE); 6521 if (!hdr) { 6522 kfree_skb(skb); 6523 return NULL; 6524 } 6525 6526 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx)) 6527 goto nla_put_failure; 6528 data = nla_nest_start(skb, NL80211_ATTR_TESTDATA); 6529 6530 ((void **)skb->cb)[0] = rdev; 6531 ((void **)skb->cb)[1] = hdr; 6532 ((void **)skb->cb)[2] = data; 6533 6534 return skb; 6535 6536 nla_put_failure: 6537 kfree_skb(skb); 6538 return NULL; 6539 } 6540 6541 struct sk_buff *cfg80211_testmode_alloc_reply_skb(struct wiphy *wiphy, 6542 int approxlen) 6543 { 6544 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); 6545 6546 if (WARN_ON(!rdev->testmode_info)) 6547 return NULL; 6548 6549 return __cfg80211_testmode_alloc_skb(rdev, approxlen, 6550 rdev->testmode_info->snd_portid, 6551 rdev->testmode_info->snd_seq, 6552 GFP_KERNEL); 6553 } 6554 EXPORT_SYMBOL(cfg80211_testmode_alloc_reply_skb); 6555 6556 int cfg80211_testmode_reply(struct sk_buff *skb) 6557 { 6558 struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0]; 6559 void *hdr = ((void **)skb->cb)[1]; 6560 struct nlattr *data = ((void **)skb->cb)[2]; 6561 6562 if (WARN_ON(!rdev->testmode_info)) { 6563 kfree_skb(skb); 6564 return -EINVAL; 6565 } 6566 6567 nla_nest_end(skb, data); 6568 genlmsg_end(skb, hdr); 6569 return genlmsg_reply(skb, rdev->testmode_info); 6570 } 6571 EXPORT_SYMBOL(cfg80211_testmode_reply); 6572 6573 struct sk_buff *cfg80211_testmode_alloc_event_skb(struct wiphy *wiphy, 6574 int approxlen, gfp_t gfp) 6575 { 6576 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); 6577 6578 return __cfg80211_testmode_alloc_skb(rdev, approxlen, 0, 0, gfp); 6579 } 6580 EXPORT_SYMBOL(cfg80211_testmode_alloc_event_skb); 6581 6582 void cfg80211_testmode_event(struct sk_buff *skb, gfp_t gfp) 6583 { 6584 void *hdr = ((void **)skb->cb)[1]; 6585 struct nlattr *data = ((void **)skb->cb)[2]; 6586 6587 nla_nest_end(skb, data); 6588 genlmsg_end(skb, hdr); 6589 genlmsg_multicast(skb, 0, nl80211_testmode_mcgrp.id, gfp); 6590 } 6591 EXPORT_SYMBOL(cfg80211_testmode_event); 6592 #endif 6593 6594 static int nl80211_connect(struct sk_buff *skb, struct genl_info *info) 6595 { 6596 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 6597 struct net_device *dev = info->user_ptr[1]; 6598 struct cfg80211_connect_params connect; 6599 struct wiphy *wiphy; 6600 struct cfg80211_cached_keys *connkeys = NULL; 6601 int err; 6602 6603 memset(&connect, 0, sizeof(connect)); 6604 6605 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE])) 6606 return -EINVAL; 6607 6608 if (!info->attrs[NL80211_ATTR_SSID] || 6609 !nla_len(info->attrs[NL80211_ATTR_SSID])) 6610 return -EINVAL; 6611 6612 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) { 6613 connect.auth_type = 6614 nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]); 6615 if (!nl80211_valid_auth_type(rdev, connect.auth_type, 6616 NL80211_CMD_CONNECT)) 6617 return -EINVAL; 6618 } else 6619 connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC; 6620 6621 connect.privacy = info->attrs[NL80211_ATTR_PRIVACY]; 6622 6623 err = nl80211_crypto_settings(rdev, info, &connect.crypto, 6624 NL80211_MAX_NR_CIPHER_SUITES); 6625 if (err) 6626 return err; 6627 6628 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION && 6629 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) 6630 return -EOPNOTSUPP; 6631 6632 wiphy = &rdev->wiphy; 6633 6634 connect.bg_scan_period = -1; 6635 if (info->attrs[NL80211_ATTR_BG_SCAN_PERIOD] && 6636 (wiphy->flags & WIPHY_FLAG_SUPPORTS_FW_ROAM)) { 6637 connect.bg_scan_period = 6638 nla_get_u16(info->attrs[NL80211_ATTR_BG_SCAN_PERIOD]); 6639 } 6640 6641 if (info->attrs[NL80211_ATTR_MAC]) 6642 connect.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]); 6643 connect.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]); 6644 connect.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]); 6645 6646 if (info->attrs[NL80211_ATTR_IE]) { 6647 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]); 6648 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); 6649 } 6650 6651 if (info->attrs[NL80211_ATTR_USE_MFP]) { 6652 connect.mfp = nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]); 6653 if (connect.mfp != NL80211_MFP_REQUIRED && 6654 connect.mfp != NL80211_MFP_NO) 6655 return -EINVAL; 6656 } else { 6657 connect.mfp = NL80211_MFP_NO; 6658 } 6659 6660 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) { 6661 connect.channel = 6662 ieee80211_get_channel(wiphy, 6663 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ])); 6664 if (!connect.channel || 6665 connect.channel->flags & IEEE80211_CHAN_DISABLED) 6666 return -EINVAL; 6667 } 6668 6669 if (connect.privacy && info->attrs[NL80211_ATTR_KEYS]) { 6670 connkeys = nl80211_parse_connkeys(rdev, 6671 info->attrs[NL80211_ATTR_KEYS], NULL); 6672 if (IS_ERR(connkeys)) 6673 return PTR_ERR(connkeys); 6674 } 6675 6676 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT])) 6677 connect.flags |= ASSOC_REQ_DISABLE_HT; 6678 6679 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) 6680 memcpy(&connect.ht_capa_mask, 6681 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]), 6682 sizeof(connect.ht_capa_mask)); 6683 6684 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) { 6685 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) { 6686 kfree(connkeys); 6687 return -EINVAL; 6688 } 6689 memcpy(&connect.ht_capa, 6690 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]), 6691 sizeof(connect.ht_capa)); 6692 } 6693 6694 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT])) 6695 connect.flags |= ASSOC_REQ_DISABLE_VHT; 6696 6697 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]) 6698 memcpy(&connect.vht_capa_mask, 6699 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]), 6700 sizeof(connect.vht_capa_mask)); 6701 6702 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) { 6703 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]) { 6704 kfree(connkeys); 6705 return -EINVAL; 6706 } 6707 memcpy(&connect.vht_capa, 6708 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]), 6709 sizeof(connect.vht_capa)); 6710 } 6711 6712 err = cfg80211_connect(rdev, dev, &connect, connkeys); 6713 if (err) 6714 kfree(connkeys); 6715 return err; 6716 } 6717 6718 static int nl80211_disconnect(struct sk_buff *skb, struct genl_info *info) 6719 { 6720 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 6721 struct net_device *dev = info->user_ptr[1]; 6722 u16 reason; 6723 6724 if (!info->attrs[NL80211_ATTR_REASON_CODE]) 6725 reason = WLAN_REASON_DEAUTH_LEAVING; 6726 else 6727 reason = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]); 6728 6729 if (reason == 0) 6730 return -EINVAL; 6731 6732 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION && 6733 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) 6734 return -EOPNOTSUPP; 6735 6736 return cfg80211_disconnect(rdev, dev, reason, true); 6737 } 6738 6739 static int nl80211_wiphy_netns(struct sk_buff *skb, struct genl_info *info) 6740 { 6741 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 6742 struct net *net; 6743 int err; 6744 u32 pid; 6745 6746 if (!info->attrs[NL80211_ATTR_PID]) 6747 return -EINVAL; 6748 6749 pid = nla_get_u32(info->attrs[NL80211_ATTR_PID]); 6750 6751 net = get_net_ns_by_pid(pid); 6752 if (IS_ERR(net)) 6753 return PTR_ERR(net); 6754 6755 err = 0; 6756 6757 /* check if anything to do */ 6758 if (!net_eq(wiphy_net(&rdev->wiphy), net)) 6759 err = cfg80211_switch_netns(rdev, net); 6760 6761 put_net(net); 6762 return err; 6763 } 6764 6765 static int nl80211_setdel_pmksa(struct sk_buff *skb, struct genl_info *info) 6766 { 6767 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 6768 int (*rdev_ops)(struct wiphy *wiphy, struct net_device *dev, 6769 struct cfg80211_pmksa *pmksa) = NULL; 6770 struct net_device *dev = info->user_ptr[1]; 6771 struct cfg80211_pmksa pmksa; 6772 6773 memset(&pmksa, 0, sizeof(struct cfg80211_pmksa)); 6774 6775 if (!info->attrs[NL80211_ATTR_MAC]) 6776 return -EINVAL; 6777 6778 if (!info->attrs[NL80211_ATTR_PMKID]) 6779 return -EINVAL; 6780 6781 pmksa.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]); 6782 pmksa.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]); 6783 6784 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION && 6785 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) 6786 return -EOPNOTSUPP; 6787 6788 switch (info->genlhdr->cmd) { 6789 case NL80211_CMD_SET_PMKSA: 6790 rdev_ops = rdev->ops->set_pmksa; 6791 break; 6792 case NL80211_CMD_DEL_PMKSA: 6793 rdev_ops = rdev->ops->del_pmksa; 6794 break; 6795 default: 6796 WARN_ON(1); 6797 break; 6798 } 6799 6800 if (!rdev_ops) 6801 return -EOPNOTSUPP; 6802 6803 return rdev_ops(&rdev->wiphy, dev, &pmksa); 6804 } 6805 6806 static int nl80211_flush_pmksa(struct sk_buff *skb, struct genl_info *info) 6807 { 6808 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 6809 struct net_device *dev = info->user_ptr[1]; 6810 6811 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION && 6812 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) 6813 return -EOPNOTSUPP; 6814 6815 if (!rdev->ops->flush_pmksa) 6816 return -EOPNOTSUPP; 6817 6818 return rdev_flush_pmksa(rdev, dev); 6819 } 6820 6821 static int nl80211_tdls_mgmt(struct sk_buff *skb, struct genl_info *info) 6822 { 6823 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 6824 struct net_device *dev = info->user_ptr[1]; 6825 u8 action_code, dialog_token; 6826 u16 status_code; 6827 u8 *peer; 6828 6829 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) || 6830 !rdev->ops->tdls_mgmt) 6831 return -EOPNOTSUPP; 6832 6833 if (!info->attrs[NL80211_ATTR_TDLS_ACTION] || 6834 !info->attrs[NL80211_ATTR_STATUS_CODE] || 6835 !info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN] || 6836 !info->attrs[NL80211_ATTR_IE] || 6837 !info->attrs[NL80211_ATTR_MAC]) 6838 return -EINVAL; 6839 6840 peer = nla_data(info->attrs[NL80211_ATTR_MAC]); 6841 action_code = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_ACTION]); 6842 status_code = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]); 6843 dialog_token = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN]); 6844 6845 return rdev_tdls_mgmt(rdev, dev, peer, action_code, 6846 dialog_token, status_code, 6847 nla_data(info->attrs[NL80211_ATTR_IE]), 6848 nla_len(info->attrs[NL80211_ATTR_IE])); 6849 } 6850 6851 static int nl80211_tdls_oper(struct sk_buff *skb, struct genl_info *info) 6852 { 6853 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 6854 struct net_device *dev = info->user_ptr[1]; 6855 enum nl80211_tdls_operation operation; 6856 u8 *peer; 6857 6858 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) || 6859 !rdev->ops->tdls_oper) 6860 return -EOPNOTSUPP; 6861 6862 if (!info->attrs[NL80211_ATTR_TDLS_OPERATION] || 6863 !info->attrs[NL80211_ATTR_MAC]) 6864 return -EINVAL; 6865 6866 operation = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_OPERATION]); 6867 peer = nla_data(info->attrs[NL80211_ATTR_MAC]); 6868 6869 return rdev_tdls_oper(rdev, dev, peer, operation); 6870 } 6871 6872 static int nl80211_remain_on_channel(struct sk_buff *skb, 6873 struct genl_info *info) 6874 { 6875 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 6876 struct wireless_dev *wdev = info->user_ptr[1]; 6877 struct cfg80211_chan_def chandef; 6878 struct sk_buff *msg; 6879 void *hdr; 6880 u64 cookie; 6881 u32 duration; 6882 int err; 6883 6884 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] || 6885 !info->attrs[NL80211_ATTR_DURATION]) 6886 return -EINVAL; 6887 6888 duration = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]); 6889 6890 if (!rdev->ops->remain_on_channel || 6891 !(rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL)) 6892 return -EOPNOTSUPP; 6893 6894 /* 6895 * We should be on that channel for at least a minimum amount of 6896 * time (10ms) but no longer than the driver supports. 6897 */ 6898 if (duration < NL80211_MIN_REMAIN_ON_CHANNEL_TIME || 6899 duration > rdev->wiphy.max_remain_on_channel_duration) 6900 return -EINVAL; 6901 6902 err = nl80211_parse_chandef(rdev, info, &chandef); 6903 if (err) 6904 return err; 6905 6906 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 6907 if (!msg) 6908 return -ENOMEM; 6909 6910 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0, 6911 NL80211_CMD_REMAIN_ON_CHANNEL); 6912 6913 if (IS_ERR(hdr)) { 6914 err = PTR_ERR(hdr); 6915 goto free_msg; 6916 } 6917 6918 err = rdev_remain_on_channel(rdev, wdev, chandef.chan, 6919 duration, &cookie); 6920 6921 if (err) 6922 goto free_msg; 6923 6924 if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie)) 6925 goto nla_put_failure; 6926 6927 genlmsg_end(msg, hdr); 6928 6929 return genlmsg_reply(msg, info); 6930 6931 nla_put_failure: 6932 err = -ENOBUFS; 6933 free_msg: 6934 nlmsg_free(msg); 6935 return err; 6936 } 6937 6938 static int nl80211_cancel_remain_on_channel(struct sk_buff *skb, 6939 struct genl_info *info) 6940 { 6941 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 6942 struct wireless_dev *wdev = info->user_ptr[1]; 6943 u64 cookie; 6944 6945 if (!info->attrs[NL80211_ATTR_COOKIE]) 6946 return -EINVAL; 6947 6948 if (!rdev->ops->cancel_remain_on_channel) 6949 return -EOPNOTSUPP; 6950 6951 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]); 6952 6953 return rdev_cancel_remain_on_channel(rdev, wdev, cookie); 6954 } 6955 6956 static u32 rateset_to_mask(struct ieee80211_supported_band *sband, 6957 u8 *rates, u8 rates_len) 6958 { 6959 u8 i; 6960 u32 mask = 0; 6961 6962 for (i = 0; i < rates_len; i++) { 6963 int rate = (rates[i] & 0x7f) * 5; 6964 int ridx; 6965 for (ridx = 0; ridx < sband->n_bitrates; ridx++) { 6966 struct ieee80211_rate *srate = 6967 &sband->bitrates[ridx]; 6968 if (rate == srate->bitrate) { 6969 mask |= 1 << ridx; 6970 break; 6971 } 6972 } 6973 if (ridx == sband->n_bitrates) 6974 return 0; /* rate not found */ 6975 } 6976 6977 return mask; 6978 } 6979 6980 static bool ht_rateset_to_mask(struct ieee80211_supported_band *sband, 6981 u8 *rates, u8 rates_len, 6982 u8 mcs[IEEE80211_HT_MCS_MASK_LEN]) 6983 { 6984 u8 i; 6985 6986 memset(mcs, 0, IEEE80211_HT_MCS_MASK_LEN); 6987 6988 for (i = 0; i < rates_len; i++) { 6989 int ridx, rbit; 6990 6991 ridx = rates[i] / 8; 6992 rbit = BIT(rates[i] % 8); 6993 6994 /* check validity */ 6995 if ((ridx < 0) || (ridx >= IEEE80211_HT_MCS_MASK_LEN)) 6996 return false; 6997 6998 /* check availability */ 6999 if (sband->ht_cap.mcs.rx_mask[ridx] & rbit) 7000 mcs[ridx] |= rbit; 7001 else 7002 return false; 7003 } 7004 7005 return true; 7006 } 7007 7008 static const struct nla_policy nl80211_txattr_policy[NL80211_TXRATE_MAX + 1] = { 7009 [NL80211_TXRATE_LEGACY] = { .type = NLA_BINARY, 7010 .len = NL80211_MAX_SUPP_RATES }, 7011 [NL80211_TXRATE_MCS] = { .type = NLA_BINARY, 7012 .len = NL80211_MAX_SUPP_HT_RATES }, 7013 }; 7014 7015 static int nl80211_set_tx_bitrate_mask(struct sk_buff *skb, 7016 struct genl_info *info) 7017 { 7018 struct nlattr *tb[NL80211_TXRATE_MAX + 1]; 7019 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 7020 struct cfg80211_bitrate_mask mask; 7021 int rem, i; 7022 struct net_device *dev = info->user_ptr[1]; 7023 struct nlattr *tx_rates; 7024 struct ieee80211_supported_band *sband; 7025 7026 if (info->attrs[NL80211_ATTR_TX_RATES] == NULL) 7027 return -EINVAL; 7028 7029 if (!rdev->ops->set_bitrate_mask) 7030 return -EOPNOTSUPP; 7031 7032 memset(&mask, 0, sizeof(mask)); 7033 /* Default to all rates enabled */ 7034 for (i = 0; i < IEEE80211_NUM_BANDS; i++) { 7035 sband = rdev->wiphy.bands[i]; 7036 mask.control[i].legacy = 7037 sband ? (1 << sband->n_bitrates) - 1 : 0; 7038 if (sband) 7039 memcpy(mask.control[i].mcs, 7040 sband->ht_cap.mcs.rx_mask, 7041 sizeof(mask.control[i].mcs)); 7042 else 7043 memset(mask.control[i].mcs, 0, 7044 sizeof(mask.control[i].mcs)); 7045 } 7046 7047 /* 7048 * The nested attribute uses enum nl80211_band as the index. This maps 7049 * directly to the enum ieee80211_band values used in cfg80211. 7050 */ 7051 BUILD_BUG_ON(NL80211_MAX_SUPP_HT_RATES > IEEE80211_HT_MCS_MASK_LEN * 8); 7052 nla_for_each_nested(tx_rates, info->attrs[NL80211_ATTR_TX_RATES], rem) 7053 { 7054 enum ieee80211_band band = nla_type(tx_rates); 7055 if (band < 0 || band >= IEEE80211_NUM_BANDS) 7056 return -EINVAL; 7057 sband = rdev->wiphy.bands[band]; 7058 if (sband == NULL) 7059 return -EINVAL; 7060 nla_parse(tb, NL80211_TXRATE_MAX, nla_data(tx_rates), 7061 nla_len(tx_rates), nl80211_txattr_policy); 7062 if (tb[NL80211_TXRATE_LEGACY]) { 7063 mask.control[band].legacy = rateset_to_mask( 7064 sband, 7065 nla_data(tb[NL80211_TXRATE_LEGACY]), 7066 nla_len(tb[NL80211_TXRATE_LEGACY])); 7067 if ((mask.control[band].legacy == 0) && 7068 nla_len(tb[NL80211_TXRATE_LEGACY])) 7069 return -EINVAL; 7070 } 7071 if (tb[NL80211_TXRATE_MCS]) { 7072 if (!ht_rateset_to_mask( 7073 sband, 7074 nla_data(tb[NL80211_TXRATE_MCS]), 7075 nla_len(tb[NL80211_TXRATE_MCS]), 7076 mask.control[band].mcs)) 7077 return -EINVAL; 7078 } 7079 7080 if (mask.control[band].legacy == 0) { 7081 /* don't allow empty legacy rates if HT 7082 * is not even supported. */ 7083 if (!rdev->wiphy.bands[band]->ht_cap.ht_supported) 7084 return -EINVAL; 7085 7086 for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++) 7087 if (mask.control[band].mcs[i]) 7088 break; 7089 7090 /* legacy and mcs rates may not be both empty */ 7091 if (i == IEEE80211_HT_MCS_MASK_LEN) 7092 return -EINVAL; 7093 } 7094 } 7095 7096 return rdev_set_bitrate_mask(rdev, dev, NULL, &mask); 7097 } 7098 7099 static int nl80211_register_mgmt(struct sk_buff *skb, struct genl_info *info) 7100 { 7101 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 7102 struct wireless_dev *wdev = info->user_ptr[1]; 7103 u16 frame_type = IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION; 7104 7105 if (!info->attrs[NL80211_ATTR_FRAME_MATCH]) 7106 return -EINVAL; 7107 7108 if (info->attrs[NL80211_ATTR_FRAME_TYPE]) 7109 frame_type = nla_get_u16(info->attrs[NL80211_ATTR_FRAME_TYPE]); 7110 7111 switch (wdev->iftype) { 7112 case NL80211_IFTYPE_STATION: 7113 case NL80211_IFTYPE_ADHOC: 7114 case NL80211_IFTYPE_P2P_CLIENT: 7115 case NL80211_IFTYPE_AP: 7116 case NL80211_IFTYPE_AP_VLAN: 7117 case NL80211_IFTYPE_MESH_POINT: 7118 case NL80211_IFTYPE_P2P_GO: 7119 case NL80211_IFTYPE_P2P_DEVICE: 7120 break; 7121 default: 7122 return -EOPNOTSUPP; 7123 } 7124 7125 /* not much point in registering if we can't reply */ 7126 if (!rdev->ops->mgmt_tx) 7127 return -EOPNOTSUPP; 7128 7129 return cfg80211_mlme_register_mgmt(wdev, info->snd_portid, frame_type, 7130 nla_data(info->attrs[NL80211_ATTR_FRAME_MATCH]), 7131 nla_len(info->attrs[NL80211_ATTR_FRAME_MATCH])); 7132 } 7133 7134 static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info) 7135 { 7136 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 7137 struct wireless_dev *wdev = info->user_ptr[1]; 7138 struct cfg80211_chan_def chandef; 7139 int err; 7140 void *hdr = NULL; 7141 u64 cookie; 7142 struct sk_buff *msg = NULL; 7143 unsigned int wait = 0; 7144 bool offchan, no_cck, dont_wait_for_ack; 7145 7146 dont_wait_for_ack = info->attrs[NL80211_ATTR_DONT_WAIT_FOR_ACK]; 7147 7148 if (!info->attrs[NL80211_ATTR_FRAME]) 7149 return -EINVAL; 7150 7151 if (!rdev->ops->mgmt_tx) 7152 return -EOPNOTSUPP; 7153 7154 switch (wdev->iftype) { 7155 case NL80211_IFTYPE_STATION: 7156 case NL80211_IFTYPE_ADHOC: 7157 case NL80211_IFTYPE_P2P_CLIENT: 7158 case NL80211_IFTYPE_AP: 7159 case NL80211_IFTYPE_AP_VLAN: 7160 case NL80211_IFTYPE_MESH_POINT: 7161 case NL80211_IFTYPE_P2P_GO: 7162 case NL80211_IFTYPE_P2P_DEVICE: 7163 break; 7164 default: 7165 return -EOPNOTSUPP; 7166 } 7167 7168 if (info->attrs[NL80211_ATTR_DURATION]) { 7169 if (!(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX)) 7170 return -EINVAL; 7171 wait = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]); 7172 7173 /* 7174 * We should wait on the channel for at least a minimum amount 7175 * of time (10ms) but no longer than the driver supports. 7176 */ 7177 if (wait < NL80211_MIN_REMAIN_ON_CHANNEL_TIME || 7178 wait > rdev->wiphy.max_remain_on_channel_duration) 7179 return -EINVAL; 7180 7181 } 7182 7183 offchan = info->attrs[NL80211_ATTR_OFFCHANNEL_TX_OK]; 7184 7185 if (offchan && !(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX)) 7186 return -EINVAL; 7187 7188 no_cck = nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]); 7189 7190 err = nl80211_parse_chandef(rdev, info, &chandef); 7191 if (err) 7192 return err; 7193 7194 if (!dont_wait_for_ack) { 7195 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 7196 if (!msg) 7197 return -ENOMEM; 7198 7199 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0, 7200 NL80211_CMD_FRAME); 7201 7202 if (IS_ERR(hdr)) { 7203 err = PTR_ERR(hdr); 7204 goto free_msg; 7205 } 7206 } 7207 7208 err = cfg80211_mlme_mgmt_tx(rdev, wdev, chandef.chan, offchan, wait, 7209 nla_data(info->attrs[NL80211_ATTR_FRAME]), 7210 nla_len(info->attrs[NL80211_ATTR_FRAME]), 7211 no_cck, dont_wait_for_ack, &cookie); 7212 if (err) 7213 goto free_msg; 7214 7215 if (msg) { 7216 if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie)) 7217 goto nla_put_failure; 7218 7219 genlmsg_end(msg, hdr); 7220 return genlmsg_reply(msg, info); 7221 } 7222 7223 return 0; 7224 7225 nla_put_failure: 7226 err = -ENOBUFS; 7227 free_msg: 7228 nlmsg_free(msg); 7229 return err; 7230 } 7231 7232 static int nl80211_tx_mgmt_cancel_wait(struct sk_buff *skb, struct genl_info *info) 7233 { 7234 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 7235 struct wireless_dev *wdev = info->user_ptr[1]; 7236 u64 cookie; 7237 7238 if (!info->attrs[NL80211_ATTR_COOKIE]) 7239 return -EINVAL; 7240 7241 if (!rdev->ops->mgmt_tx_cancel_wait) 7242 return -EOPNOTSUPP; 7243 7244 switch (wdev->iftype) { 7245 case NL80211_IFTYPE_STATION: 7246 case NL80211_IFTYPE_ADHOC: 7247 case NL80211_IFTYPE_P2P_CLIENT: 7248 case NL80211_IFTYPE_AP: 7249 case NL80211_IFTYPE_AP_VLAN: 7250 case NL80211_IFTYPE_P2P_GO: 7251 case NL80211_IFTYPE_P2P_DEVICE: 7252 break; 7253 default: 7254 return -EOPNOTSUPP; 7255 } 7256 7257 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]); 7258 7259 return rdev_mgmt_tx_cancel_wait(rdev, wdev, cookie); 7260 } 7261 7262 static int nl80211_set_power_save(struct sk_buff *skb, struct genl_info *info) 7263 { 7264 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 7265 struct wireless_dev *wdev; 7266 struct net_device *dev = info->user_ptr[1]; 7267 u8 ps_state; 7268 bool state; 7269 int err; 7270 7271 if (!info->attrs[NL80211_ATTR_PS_STATE]) 7272 return -EINVAL; 7273 7274 ps_state = nla_get_u32(info->attrs[NL80211_ATTR_PS_STATE]); 7275 7276 if (ps_state != NL80211_PS_DISABLED && ps_state != NL80211_PS_ENABLED) 7277 return -EINVAL; 7278 7279 wdev = dev->ieee80211_ptr; 7280 7281 if (!rdev->ops->set_power_mgmt) 7282 return -EOPNOTSUPP; 7283 7284 state = (ps_state == NL80211_PS_ENABLED) ? true : false; 7285 7286 if (state == wdev->ps) 7287 return 0; 7288 7289 err = rdev_set_power_mgmt(rdev, dev, state, wdev->ps_timeout); 7290 if (!err) 7291 wdev->ps = state; 7292 return err; 7293 } 7294 7295 static int nl80211_get_power_save(struct sk_buff *skb, struct genl_info *info) 7296 { 7297 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 7298 enum nl80211_ps_state ps_state; 7299 struct wireless_dev *wdev; 7300 struct net_device *dev = info->user_ptr[1]; 7301 struct sk_buff *msg; 7302 void *hdr; 7303 int err; 7304 7305 wdev = dev->ieee80211_ptr; 7306 7307 if (!rdev->ops->set_power_mgmt) 7308 return -EOPNOTSUPP; 7309 7310 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 7311 if (!msg) 7312 return -ENOMEM; 7313 7314 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0, 7315 NL80211_CMD_GET_POWER_SAVE); 7316 if (!hdr) { 7317 err = -ENOBUFS; 7318 goto free_msg; 7319 } 7320 7321 if (wdev->ps) 7322 ps_state = NL80211_PS_ENABLED; 7323 else 7324 ps_state = NL80211_PS_DISABLED; 7325 7326 if (nla_put_u32(msg, NL80211_ATTR_PS_STATE, ps_state)) 7327 goto nla_put_failure; 7328 7329 genlmsg_end(msg, hdr); 7330 return genlmsg_reply(msg, info); 7331 7332 nla_put_failure: 7333 err = -ENOBUFS; 7334 free_msg: 7335 nlmsg_free(msg); 7336 return err; 7337 } 7338 7339 static struct nla_policy 7340 nl80211_attr_cqm_policy[NL80211_ATTR_CQM_MAX + 1] __read_mostly = { 7341 [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_U32 }, 7342 [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U32 }, 7343 [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 }, 7344 [NL80211_ATTR_CQM_TXE_RATE] = { .type = NLA_U32 }, 7345 [NL80211_ATTR_CQM_TXE_PKTS] = { .type = NLA_U32 }, 7346 [NL80211_ATTR_CQM_TXE_INTVL] = { .type = NLA_U32 }, 7347 }; 7348 7349 static int nl80211_set_cqm_txe(struct genl_info *info, 7350 u32 rate, u32 pkts, u32 intvl) 7351 { 7352 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 7353 struct wireless_dev *wdev; 7354 struct net_device *dev = info->user_ptr[1]; 7355 7356 if (rate > 100 || intvl > NL80211_CQM_TXE_MAX_INTVL) 7357 return -EINVAL; 7358 7359 wdev = dev->ieee80211_ptr; 7360 7361 if (!rdev->ops->set_cqm_txe_config) 7362 return -EOPNOTSUPP; 7363 7364 if (wdev->iftype != NL80211_IFTYPE_STATION && 7365 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT) 7366 return -EOPNOTSUPP; 7367 7368 return rdev_set_cqm_txe_config(rdev, dev, rate, pkts, intvl); 7369 } 7370 7371 static int nl80211_set_cqm_rssi(struct genl_info *info, 7372 s32 threshold, u32 hysteresis) 7373 { 7374 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 7375 struct wireless_dev *wdev; 7376 struct net_device *dev = info->user_ptr[1]; 7377 7378 if (threshold > 0) 7379 return -EINVAL; 7380 7381 wdev = dev->ieee80211_ptr; 7382 7383 if (!rdev->ops->set_cqm_rssi_config) 7384 return -EOPNOTSUPP; 7385 7386 if (wdev->iftype != NL80211_IFTYPE_STATION && 7387 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT) 7388 return -EOPNOTSUPP; 7389 7390 return rdev_set_cqm_rssi_config(rdev, dev, threshold, hysteresis); 7391 } 7392 7393 static int nl80211_set_cqm(struct sk_buff *skb, struct genl_info *info) 7394 { 7395 struct nlattr *attrs[NL80211_ATTR_CQM_MAX + 1]; 7396 struct nlattr *cqm; 7397 int err; 7398 7399 cqm = info->attrs[NL80211_ATTR_CQM]; 7400 if (!cqm) { 7401 err = -EINVAL; 7402 goto out; 7403 } 7404 7405 err = nla_parse_nested(attrs, NL80211_ATTR_CQM_MAX, cqm, 7406 nl80211_attr_cqm_policy); 7407 if (err) 7408 goto out; 7409 7410 if (attrs[NL80211_ATTR_CQM_RSSI_THOLD] && 7411 attrs[NL80211_ATTR_CQM_RSSI_HYST]) { 7412 s32 threshold; 7413 u32 hysteresis; 7414 threshold = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_THOLD]); 7415 hysteresis = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_HYST]); 7416 err = nl80211_set_cqm_rssi(info, threshold, hysteresis); 7417 } else if (attrs[NL80211_ATTR_CQM_TXE_RATE] && 7418 attrs[NL80211_ATTR_CQM_TXE_PKTS] && 7419 attrs[NL80211_ATTR_CQM_TXE_INTVL]) { 7420 u32 rate, pkts, intvl; 7421 rate = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_RATE]); 7422 pkts = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_PKTS]); 7423 intvl = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_INTVL]); 7424 err = nl80211_set_cqm_txe(info, rate, pkts, intvl); 7425 } else 7426 err = -EINVAL; 7427 7428 out: 7429 return err; 7430 } 7431 7432 static int nl80211_join_mesh(struct sk_buff *skb, struct genl_info *info) 7433 { 7434 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 7435 struct net_device *dev = info->user_ptr[1]; 7436 struct mesh_config cfg; 7437 struct mesh_setup setup; 7438 int err; 7439 7440 /* start with default */ 7441 memcpy(&cfg, &default_mesh_config, sizeof(cfg)); 7442 memcpy(&setup, &default_mesh_setup, sizeof(setup)); 7443 7444 if (info->attrs[NL80211_ATTR_MESH_CONFIG]) { 7445 /* and parse parameters if given */ 7446 err = nl80211_parse_mesh_config(info, &cfg, NULL); 7447 if (err) 7448 return err; 7449 } 7450 7451 if (!info->attrs[NL80211_ATTR_MESH_ID] || 7452 !nla_len(info->attrs[NL80211_ATTR_MESH_ID])) 7453 return -EINVAL; 7454 7455 setup.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]); 7456 setup.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]); 7457 7458 if (info->attrs[NL80211_ATTR_MCAST_RATE] && 7459 !nl80211_parse_mcast_rate(rdev, setup.mcast_rate, 7460 nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE]))) 7461 return -EINVAL; 7462 7463 if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) { 7464 setup.beacon_interval = 7465 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]); 7466 if (setup.beacon_interval < 10 || 7467 setup.beacon_interval > 10000) 7468 return -EINVAL; 7469 } 7470 7471 if (info->attrs[NL80211_ATTR_DTIM_PERIOD]) { 7472 setup.dtim_period = 7473 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]); 7474 if (setup.dtim_period < 1 || setup.dtim_period > 100) 7475 return -EINVAL; 7476 } 7477 7478 if (info->attrs[NL80211_ATTR_MESH_SETUP]) { 7479 /* parse additional setup parameters if given */ 7480 err = nl80211_parse_mesh_setup(info, &setup); 7481 if (err) 7482 return err; 7483 } 7484 7485 if (setup.user_mpm) 7486 cfg.auto_open_plinks = false; 7487 7488 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) { 7489 err = nl80211_parse_chandef(rdev, info, &setup.chandef); 7490 if (err) 7491 return err; 7492 } else { 7493 /* cfg80211_join_mesh() will sort it out */ 7494 setup.chandef.chan = NULL; 7495 } 7496 7497 return cfg80211_join_mesh(rdev, dev, &setup, &cfg); 7498 } 7499 7500 static int nl80211_leave_mesh(struct sk_buff *skb, struct genl_info *info) 7501 { 7502 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 7503 struct net_device *dev = info->user_ptr[1]; 7504 7505 return cfg80211_leave_mesh(rdev, dev); 7506 } 7507 7508 #ifdef CONFIG_PM 7509 static int nl80211_send_wowlan_patterns(struct sk_buff *msg, 7510 struct cfg80211_registered_device *rdev) 7511 { 7512 struct nlattr *nl_pats, *nl_pat; 7513 int i, pat_len; 7514 7515 if (!rdev->wowlan->n_patterns) 7516 return 0; 7517 7518 nl_pats = nla_nest_start(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN); 7519 if (!nl_pats) 7520 return -ENOBUFS; 7521 7522 for (i = 0; i < rdev->wowlan->n_patterns; i++) { 7523 nl_pat = nla_nest_start(msg, i + 1); 7524 if (!nl_pat) 7525 return -ENOBUFS; 7526 pat_len = rdev->wowlan->patterns[i].pattern_len; 7527 if (nla_put(msg, NL80211_WOWLAN_PKTPAT_MASK, 7528 DIV_ROUND_UP(pat_len, 8), 7529 rdev->wowlan->patterns[i].mask) || 7530 nla_put(msg, NL80211_WOWLAN_PKTPAT_PATTERN, 7531 pat_len, rdev->wowlan->patterns[i].pattern) || 7532 nla_put_u32(msg, NL80211_WOWLAN_PKTPAT_OFFSET, 7533 rdev->wowlan->patterns[i].pkt_offset)) 7534 return -ENOBUFS; 7535 nla_nest_end(msg, nl_pat); 7536 } 7537 nla_nest_end(msg, nl_pats); 7538 7539 return 0; 7540 } 7541 7542 static int nl80211_send_wowlan_tcp(struct sk_buff *msg, 7543 struct cfg80211_wowlan_tcp *tcp) 7544 { 7545 struct nlattr *nl_tcp; 7546 7547 if (!tcp) 7548 return 0; 7549 7550 nl_tcp = nla_nest_start(msg, NL80211_WOWLAN_TRIG_TCP_CONNECTION); 7551 if (!nl_tcp) 7552 return -ENOBUFS; 7553 7554 if (nla_put_be32(msg, NL80211_WOWLAN_TCP_SRC_IPV4, tcp->src) || 7555 nla_put_be32(msg, NL80211_WOWLAN_TCP_DST_IPV4, tcp->dst) || 7556 nla_put(msg, NL80211_WOWLAN_TCP_DST_MAC, ETH_ALEN, tcp->dst_mac) || 7557 nla_put_u16(msg, NL80211_WOWLAN_TCP_SRC_PORT, tcp->src_port) || 7558 nla_put_u16(msg, NL80211_WOWLAN_TCP_DST_PORT, tcp->dst_port) || 7559 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD, 7560 tcp->payload_len, tcp->payload) || 7561 nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL, 7562 tcp->data_interval) || 7563 nla_put(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD, 7564 tcp->wake_len, tcp->wake_data) || 7565 nla_put(msg, NL80211_WOWLAN_TCP_WAKE_MASK, 7566 DIV_ROUND_UP(tcp->wake_len, 8), tcp->wake_mask)) 7567 return -ENOBUFS; 7568 7569 if (tcp->payload_seq.len && 7570 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ, 7571 sizeof(tcp->payload_seq), &tcp->payload_seq)) 7572 return -ENOBUFS; 7573 7574 if (tcp->payload_tok.len && 7575 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN, 7576 sizeof(tcp->payload_tok) + tcp->tokens_size, 7577 &tcp->payload_tok)) 7578 return -ENOBUFS; 7579 7580 nla_nest_end(msg, nl_tcp); 7581 7582 return 0; 7583 } 7584 7585 static int nl80211_get_wowlan(struct sk_buff *skb, struct genl_info *info) 7586 { 7587 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 7588 struct sk_buff *msg; 7589 void *hdr; 7590 u32 size = NLMSG_DEFAULT_SIZE; 7591 7592 if (!rdev->wiphy.wowlan.flags && !rdev->wiphy.wowlan.n_patterns && 7593 !rdev->wiphy.wowlan.tcp) 7594 return -EOPNOTSUPP; 7595 7596 if (rdev->wowlan && rdev->wowlan->tcp) { 7597 /* adjust size to have room for all the data */ 7598 size += rdev->wowlan->tcp->tokens_size + 7599 rdev->wowlan->tcp->payload_len + 7600 rdev->wowlan->tcp->wake_len + 7601 rdev->wowlan->tcp->wake_len / 8; 7602 } 7603 7604 msg = nlmsg_new(size, GFP_KERNEL); 7605 if (!msg) 7606 return -ENOMEM; 7607 7608 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0, 7609 NL80211_CMD_GET_WOWLAN); 7610 if (!hdr) 7611 goto nla_put_failure; 7612 7613 if (rdev->wowlan) { 7614 struct nlattr *nl_wowlan; 7615 7616 nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS); 7617 if (!nl_wowlan) 7618 goto nla_put_failure; 7619 7620 if ((rdev->wowlan->any && 7621 nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) || 7622 (rdev->wowlan->disconnect && 7623 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) || 7624 (rdev->wowlan->magic_pkt && 7625 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) || 7626 (rdev->wowlan->gtk_rekey_failure && 7627 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) || 7628 (rdev->wowlan->eap_identity_req && 7629 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) || 7630 (rdev->wowlan->four_way_handshake && 7631 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) || 7632 (rdev->wowlan->rfkill_release && 7633 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE))) 7634 goto nla_put_failure; 7635 7636 if (nl80211_send_wowlan_patterns(msg, rdev)) 7637 goto nla_put_failure; 7638 7639 if (nl80211_send_wowlan_tcp(msg, rdev->wowlan->tcp)) 7640 goto nla_put_failure; 7641 7642 nla_nest_end(msg, nl_wowlan); 7643 } 7644 7645 genlmsg_end(msg, hdr); 7646 return genlmsg_reply(msg, info); 7647 7648 nla_put_failure: 7649 nlmsg_free(msg); 7650 return -ENOBUFS; 7651 } 7652 7653 static int nl80211_parse_wowlan_tcp(struct cfg80211_registered_device *rdev, 7654 struct nlattr *attr, 7655 struct cfg80211_wowlan *trig) 7656 { 7657 struct nlattr *tb[NUM_NL80211_WOWLAN_TCP]; 7658 struct cfg80211_wowlan_tcp *cfg; 7659 struct nl80211_wowlan_tcp_data_token *tok = NULL; 7660 struct nl80211_wowlan_tcp_data_seq *seq = NULL; 7661 u32 size; 7662 u32 data_size, wake_size, tokens_size = 0, wake_mask_size; 7663 int err, port; 7664 7665 if (!rdev->wiphy.wowlan.tcp) 7666 return -EINVAL; 7667 7668 err = nla_parse(tb, MAX_NL80211_WOWLAN_TCP, 7669 nla_data(attr), nla_len(attr), 7670 nl80211_wowlan_tcp_policy); 7671 if (err) 7672 return err; 7673 7674 if (!tb[NL80211_WOWLAN_TCP_SRC_IPV4] || 7675 !tb[NL80211_WOWLAN_TCP_DST_IPV4] || 7676 !tb[NL80211_WOWLAN_TCP_DST_MAC] || 7677 !tb[NL80211_WOWLAN_TCP_DST_PORT] || 7678 !tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD] || 7679 !tb[NL80211_WOWLAN_TCP_DATA_INTERVAL] || 7680 !tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD] || 7681 !tb[NL80211_WOWLAN_TCP_WAKE_MASK]) 7682 return -EINVAL; 7683 7684 data_size = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]); 7685 if (data_size > rdev->wiphy.wowlan.tcp->data_payload_max) 7686 return -EINVAL; 7687 7688 if (nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) > 7689 rdev->wiphy.wowlan.tcp->data_interval_max || 7690 nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) == 0) 7691 return -EINVAL; 7692 7693 wake_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]); 7694 if (wake_size > rdev->wiphy.wowlan.tcp->wake_payload_max) 7695 return -EINVAL; 7696 7697 wake_mask_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_MASK]); 7698 if (wake_mask_size != DIV_ROUND_UP(wake_size, 8)) 7699 return -EINVAL; 7700 7701 if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]) { 7702 u32 tokln = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]); 7703 7704 tok = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]); 7705 tokens_size = tokln - sizeof(*tok); 7706 7707 if (!tok->len || tokens_size % tok->len) 7708 return -EINVAL; 7709 if (!rdev->wiphy.wowlan.tcp->tok) 7710 return -EINVAL; 7711 if (tok->len > rdev->wiphy.wowlan.tcp->tok->max_len) 7712 return -EINVAL; 7713 if (tok->len < rdev->wiphy.wowlan.tcp->tok->min_len) 7714 return -EINVAL; 7715 if (tokens_size > rdev->wiphy.wowlan.tcp->tok->bufsize) 7716 return -EINVAL; 7717 if (tok->offset + tok->len > data_size) 7718 return -EINVAL; 7719 } 7720 7721 if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]) { 7722 seq = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]); 7723 if (!rdev->wiphy.wowlan.tcp->seq) 7724 return -EINVAL; 7725 if (seq->len == 0 || seq->len > 4) 7726 return -EINVAL; 7727 if (seq->len + seq->offset > data_size) 7728 return -EINVAL; 7729 } 7730 7731 size = sizeof(*cfg); 7732 size += data_size; 7733 size += wake_size + wake_mask_size; 7734 size += tokens_size; 7735 7736 cfg = kzalloc(size, GFP_KERNEL); 7737 if (!cfg) 7738 return -ENOMEM; 7739 cfg->src = nla_get_be32(tb[NL80211_WOWLAN_TCP_SRC_IPV4]); 7740 cfg->dst = nla_get_be32(tb[NL80211_WOWLAN_TCP_DST_IPV4]); 7741 memcpy(cfg->dst_mac, nla_data(tb[NL80211_WOWLAN_TCP_DST_MAC]), 7742 ETH_ALEN); 7743 if (tb[NL80211_WOWLAN_TCP_SRC_PORT]) 7744 port = nla_get_u16(tb[NL80211_WOWLAN_TCP_SRC_PORT]); 7745 else 7746 port = 0; 7747 #ifdef CONFIG_INET 7748 /* allocate a socket and port for it and use it */ 7749 err = __sock_create(wiphy_net(&rdev->wiphy), PF_INET, SOCK_STREAM, 7750 IPPROTO_TCP, &cfg->sock, 1); 7751 if (err) { 7752 kfree(cfg); 7753 return err; 7754 } 7755 if (inet_csk_get_port(cfg->sock->sk, port)) { 7756 sock_release(cfg->sock); 7757 kfree(cfg); 7758 return -EADDRINUSE; 7759 } 7760 cfg->src_port = inet_sk(cfg->sock->sk)->inet_num; 7761 #else 7762 if (!port) { 7763 kfree(cfg); 7764 return -EINVAL; 7765 } 7766 cfg->src_port = port; 7767 #endif 7768 7769 cfg->dst_port = nla_get_u16(tb[NL80211_WOWLAN_TCP_DST_PORT]); 7770 cfg->payload_len = data_size; 7771 cfg->payload = (u8 *)cfg + sizeof(*cfg) + tokens_size; 7772 memcpy((void *)cfg->payload, 7773 nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]), 7774 data_size); 7775 if (seq) 7776 cfg->payload_seq = *seq; 7777 cfg->data_interval = nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]); 7778 cfg->wake_len = wake_size; 7779 cfg->wake_data = (u8 *)cfg + sizeof(*cfg) + tokens_size + data_size; 7780 memcpy((void *)cfg->wake_data, 7781 nla_data(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]), 7782 wake_size); 7783 cfg->wake_mask = (u8 *)cfg + sizeof(*cfg) + tokens_size + 7784 data_size + wake_size; 7785 memcpy((void *)cfg->wake_mask, 7786 nla_data(tb[NL80211_WOWLAN_TCP_WAKE_MASK]), 7787 wake_mask_size); 7788 if (tok) { 7789 cfg->tokens_size = tokens_size; 7790 memcpy(&cfg->payload_tok, tok, sizeof(*tok) + tokens_size); 7791 } 7792 7793 trig->tcp = cfg; 7794 7795 return 0; 7796 } 7797 7798 static int nl80211_set_wowlan(struct sk_buff *skb, struct genl_info *info) 7799 { 7800 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 7801 struct nlattr *tb[NUM_NL80211_WOWLAN_TRIG]; 7802 struct cfg80211_wowlan new_triggers = {}; 7803 struct cfg80211_wowlan *ntrig; 7804 struct wiphy_wowlan_support *wowlan = &rdev->wiphy.wowlan; 7805 int err, i; 7806 bool prev_enabled = rdev->wowlan; 7807 7808 if (!rdev->wiphy.wowlan.flags && !rdev->wiphy.wowlan.n_patterns && 7809 !rdev->wiphy.wowlan.tcp) 7810 return -EOPNOTSUPP; 7811 7812 if (!info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]) { 7813 cfg80211_rdev_free_wowlan(rdev); 7814 rdev->wowlan = NULL; 7815 goto set_wakeup; 7816 } 7817 7818 err = nla_parse(tb, MAX_NL80211_WOWLAN_TRIG, 7819 nla_data(info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]), 7820 nla_len(info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]), 7821 nl80211_wowlan_policy); 7822 if (err) 7823 return err; 7824 7825 if (tb[NL80211_WOWLAN_TRIG_ANY]) { 7826 if (!(wowlan->flags & WIPHY_WOWLAN_ANY)) 7827 return -EINVAL; 7828 new_triggers.any = true; 7829 } 7830 7831 if (tb[NL80211_WOWLAN_TRIG_DISCONNECT]) { 7832 if (!(wowlan->flags & WIPHY_WOWLAN_DISCONNECT)) 7833 return -EINVAL; 7834 new_triggers.disconnect = true; 7835 } 7836 7837 if (tb[NL80211_WOWLAN_TRIG_MAGIC_PKT]) { 7838 if (!(wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT)) 7839 return -EINVAL; 7840 new_triggers.magic_pkt = true; 7841 } 7842 7843 if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED]) 7844 return -EINVAL; 7845 7846 if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE]) { 7847 if (!(wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE)) 7848 return -EINVAL; 7849 new_triggers.gtk_rekey_failure = true; 7850 } 7851 7852 if (tb[NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST]) { 7853 if (!(wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ)) 7854 return -EINVAL; 7855 new_triggers.eap_identity_req = true; 7856 } 7857 7858 if (tb[NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE]) { 7859 if (!(wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE)) 7860 return -EINVAL; 7861 new_triggers.four_way_handshake = true; 7862 } 7863 7864 if (tb[NL80211_WOWLAN_TRIG_RFKILL_RELEASE]) { 7865 if (!(wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE)) 7866 return -EINVAL; 7867 new_triggers.rfkill_release = true; 7868 } 7869 7870 if (tb[NL80211_WOWLAN_TRIG_PKT_PATTERN]) { 7871 struct nlattr *pat; 7872 int n_patterns = 0; 7873 int rem, pat_len, mask_len, pkt_offset; 7874 struct nlattr *pat_tb[NUM_NL80211_WOWLAN_PKTPAT]; 7875 7876 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN], 7877 rem) 7878 n_patterns++; 7879 if (n_patterns > wowlan->n_patterns) 7880 return -EINVAL; 7881 7882 new_triggers.patterns = kcalloc(n_patterns, 7883 sizeof(new_triggers.patterns[0]), 7884 GFP_KERNEL); 7885 if (!new_triggers.patterns) 7886 return -ENOMEM; 7887 7888 new_triggers.n_patterns = n_patterns; 7889 i = 0; 7890 7891 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN], 7892 rem) { 7893 nla_parse(pat_tb, MAX_NL80211_WOWLAN_PKTPAT, 7894 nla_data(pat), nla_len(pat), NULL); 7895 err = -EINVAL; 7896 if (!pat_tb[NL80211_WOWLAN_PKTPAT_MASK] || 7897 !pat_tb[NL80211_WOWLAN_PKTPAT_PATTERN]) 7898 goto error; 7899 pat_len = nla_len(pat_tb[NL80211_WOWLAN_PKTPAT_PATTERN]); 7900 mask_len = DIV_ROUND_UP(pat_len, 8); 7901 if (nla_len(pat_tb[NL80211_WOWLAN_PKTPAT_MASK]) != 7902 mask_len) 7903 goto error; 7904 if (pat_len > wowlan->pattern_max_len || 7905 pat_len < wowlan->pattern_min_len) 7906 goto error; 7907 7908 if (!pat_tb[NL80211_WOWLAN_PKTPAT_OFFSET]) 7909 pkt_offset = 0; 7910 else 7911 pkt_offset = nla_get_u32( 7912 pat_tb[NL80211_WOWLAN_PKTPAT_OFFSET]); 7913 if (pkt_offset > wowlan->max_pkt_offset) 7914 goto error; 7915 new_triggers.patterns[i].pkt_offset = pkt_offset; 7916 7917 new_triggers.patterns[i].mask = 7918 kmalloc(mask_len + pat_len, GFP_KERNEL); 7919 if (!new_triggers.patterns[i].mask) { 7920 err = -ENOMEM; 7921 goto error; 7922 } 7923 new_triggers.patterns[i].pattern = 7924 new_triggers.patterns[i].mask + mask_len; 7925 memcpy(new_triggers.patterns[i].mask, 7926 nla_data(pat_tb[NL80211_WOWLAN_PKTPAT_MASK]), 7927 mask_len); 7928 new_triggers.patterns[i].pattern_len = pat_len; 7929 memcpy(new_triggers.patterns[i].pattern, 7930 nla_data(pat_tb[NL80211_WOWLAN_PKTPAT_PATTERN]), 7931 pat_len); 7932 i++; 7933 } 7934 } 7935 7936 if (tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION]) { 7937 err = nl80211_parse_wowlan_tcp( 7938 rdev, tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION], 7939 &new_triggers); 7940 if (err) 7941 goto error; 7942 } 7943 7944 ntrig = kmemdup(&new_triggers, sizeof(new_triggers), GFP_KERNEL); 7945 if (!ntrig) { 7946 err = -ENOMEM; 7947 goto error; 7948 } 7949 cfg80211_rdev_free_wowlan(rdev); 7950 rdev->wowlan = ntrig; 7951 7952 set_wakeup: 7953 if (rdev->ops->set_wakeup && prev_enabled != !!rdev->wowlan) 7954 rdev_set_wakeup(rdev, rdev->wowlan); 7955 7956 return 0; 7957 error: 7958 for (i = 0; i < new_triggers.n_patterns; i++) 7959 kfree(new_triggers.patterns[i].mask); 7960 kfree(new_triggers.patterns); 7961 if (new_triggers.tcp && new_triggers.tcp->sock) 7962 sock_release(new_triggers.tcp->sock); 7963 kfree(new_triggers.tcp); 7964 return err; 7965 } 7966 #endif 7967 7968 static int nl80211_set_rekey_data(struct sk_buff *skb, struct genl_info *info) 7969 { 7970 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 7971 struct net_device *dev = info->user_ptr[1]; 7972 struct wireless_dev *wdev = dev->ieee80211_ptr; 7973 struct nlattr *tb[NUM_NL80211_REKEY_DATA]; 7974 struct cfg80211_gtk_rekey_data rekey_data; 7975 int err; 7976 7977 if (!info->attrs[NL80211_ATTR_REKEY_DATA]) 7978 return -EINVAL; 7979 7980 err = nla_parse(tb, MAX_NL80211_REKEY_DATA, 7981 nla_data(info->attrs[NL80211_ATTR_REKEY_DATA]), 7982 nla_len(info->attrs[NL80211_ATTR_REKEY_DATA]), 7983 nl80211_rekey_policy); 7984 if (err) 7985 return err; 7986 7987 if (nla_len(tb[NL80211_REKEY_DATA_REPLAY_CTR]) != NL80211_REPLAY_CTR_LEN) 7988 return -ERANGE; 7989 if (nla_len(tb[NL80211_REKEY_DATA_KEK]) != NL80211_KEK_LEN) 7990 return -ERANGE; 7991 if (nla_len(tb[NL80211_REKEY_DATA_KCK]) != NL80211_KCK_LEN) 7992 return -ERANGE; 7993 7994 memcpy(rekey_data.kek, nla_data(tb[NL80211_REKEY_DATA_KEK]), 7995 NL80211_KEK_LEN); 7996 memcpy(rekey_data.kck, nla_data(tb[NL80211_REKEY_DATA_KCK]), 7997 NL80211_KCK_LEN); 7998 memcpy(rekey_data.replay_ctr, 7999 nla_data(tb[NL80211_REKEY_DATA_REPLAY_CTR]), 8000 NL80211_REPLAY_CTR_LEN); 8001 8002 wdev_lock(wdev); 8003 if (!wdev->current_bss) { 8004 err = -ENOTCONN; 8005 goto out; 8006 } 8007 8008 if (!rdev->ops->set_rekey_data) { 8009 err = -EOPNOTSUPP; 8010 goto out; 8011 } 8012 8013 err = rdev_set_rekey_data(rdev, dev, &rekey_data); 8014 out: 8015 wdev_unlock(wdev); 8016 return err; 8017 } 8018 8019 static int nl80211_register_unexpected_frame(struct sk_buff *skb, 8020 struct genl_info *info) 8021 { 8022 struct net_device *dev = info->user_ptr[1]; 8023 struct wireless_dev *wdev = dev->ieee80211_ptr; 8024 8025 if (wdev->iftype != NL80211_IFTYPE_AP && 8026 wdev->iftype != NL80211_IFTYPE_P2P_GO) 8027 return -EINVAL; 8028 8029 if (wdev->ap_unexpected_nlportid) 8030 return -EBUSY; 8031 8032 wdev->ap_unexpected_nlportid = info->snd_portid; 8033 return 0; 8034 } 8035 8036 static int nl80211_probe_client(struct sk_buff *skb, 8037 struct genl_info *info) 8038 { 8039 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 8040 struct net_device *dev = info->user_ptr[1]; 8041 struct wireless_dev *wdev = dev->ieee80211_ptr; 8042 struct sk_buff *msg; 8043 void *hdr; 8044 const u8 *addr; 8045 u64 cookie; 8046 int err; 8047 8048 if (wdev->iftype != NL80211_IFTYPE_AP && 8049 wdev->iftype != NL80211_IFTYPE_P2P_GO) 8050 return -EOPNOTSUPP; 8051 8052 if (!info->attrs[NL80211_ATTR_MAC]) 8053 return -EINVAL; 8054 8055 if (!rdev->ops->probe_client) 8056 return -EOPNOTSUPP; 8057 8058 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 8059 if (!msg) 8060 return -ENOMEM; 8061 8062 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0, 8063 NL80211_CMD_PROBE_CLIENT); 8064 8065 if (IS_ERR(hdr)) { 8066 err = PTR_ERR(hdr); 8067 goto free_msg; 8068 } 8069 8070 addr = nla_data(info->attrs[NL80211_ATTR_MAC]); 8071 8072 err = rdev_probe_client(rdev, dev, addr, &cookie); 8073 if (err) 8074 goto free_msg; 8075 8076 if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie)) 8077 goto nla_put_failure; 8078 8079 genlmsg_end(msg, hdr); 8080 8081 return genlmsg_reply(msg, info); 8082 8083 nla_put_failure: 8084 err = -ENOBUFS; 8085 free_msg: 8086 nlmsg_free(msg); 8087 return err; 8088 } 8089 8090 static int nl80211_register_beacons(struct sk_buff *skb, struct genl_info *info) 8091 { 8092 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 8093 struct cfg80211_beacon_registration *reg, *nreg; 8094 int rv; 8095 8096 if (!(rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS)) 8097 return -EOPNOTSUPP; 8098 8099 nreg = kzalloc(sizeof(*nreg), GFP_KERNEL); 8100 if (!nreg) 8101 return -ENOMEM; 8102 8103 /* First, check if already registered. */ 8104 spin_lock_bh(&rdev->beacon_registrations_lock); 8105 list_for_each_entry(reg, &rdev->beacon_registrations, list) { 8106 if (reg->nlportid == info->snd_portid) { 8107 rv = -EALREADY; 8108 goto out_err; 8109 } 8110 } 8111 /* Add it to the list */ 8112 nreg->nlportid = info->snd_portid; 8113 list_add(&nreg->list, &rdev->beacon_registrations); 8114 8115 spin_unlock_bh(&rdev->beacon_registrations_lock); 8116 8117 return 0; 8118 out_err: 8119 spin_unlock_bh(&rdev->beacon_registrations_lock); 8120 kfree(nreg); 8121 return rv; 8122 } 8123 8124 static int nl80211_start_p2p_device(struct sk_buff *skb, struct genl_info *info) 8125 { 8126 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 8127 struct wireless_dev *wdev = info->user_ptr[1]; 8128 int err; 8129 8130 if (!rdev->ops->start_p2p_device) 8131 return -EOPNOTSUPP; 8132 8133 if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE) 8134 return -EOPNOTSUPP; 8135 8136 if (wdev->p2p_started) 8137 return 0; 8138 8139 mutex_lock(&rdev->devlist_mtx); 8140 err = cfg80211_can_add_interface(rdev, wdev->iftype); 8141 mutex_unlock(&rdev->devlist_mtx); 8142 if (err) 8143 return err; 8144 8145 err = rdev_start_p2p_device(rdev, wdev); 8146 if (err) 8147 return err; 8148 8149 wdev->p2p_started = true; 8150 mutex_lock(&rdev->devlist_mtx); 8151 rdev->opencount++; 8152 mutex_unlock(&rdev->devlist_mtx); 8153 8154 return 0; 8155 } 8156 8157 static int nl80211_stop_p2p_device(struct sk_buff *skb, struct genl_info *info) 8158 { 8159 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 8160 struct wireless_dev *wdev = info->user_ptr[1]; 8161 8162 if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE) 8163 return -EOPNOTSUPP; 8164 8165 if (!rdev->ops->stop_p2p_device) 8166 return -EOPNOTSUPP; 8167 8168 mutex_lock(&rdev->devlist_mtx); 8169 mutex_lock(&rdev->sched_scan_mtx); 8170 cfg80211_stop_p2p_device(rdev, wdev); 8171 mutex_unlock(&rdev->sched_scan_mtx); 8172 mutex_unlock(&rdev->devlist_mtx); 8173 8174 return 0; 8175 } 8176 8177 static int nl80211_get_protocol_features(struct sk_buff *skb, 8178 struct genl_info *info) 8179 { 8180 void *hdr; 8181 struct sk_buff *msg; 8182 8183 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 8184 if (!msg) 8185 return -ENOMEM; 8186 8187 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0, 8188 NL80211_CMD_GET_PROTOCOL_FEATURES); 8189 if (!hdr) 8190 goto nla_put_failure; 8191 8192 if (nla_put_u32(msg, NL80211_ATTR_PROTOCOL_FEATURES, 8193 NL80211_PROTOCOL_FEATURE_SPLIT_WIPHY_DUMP)) 8194 goto nla_put_failure; 8195 8196 genlmsg_end(msg, hdr); 8197 return genlmsg_reply(msg, info); 8198 8199 nla_put_failure: 8200 kfree_skb(msg); 8201 return -ENOBUFS; 8202 } 8203 8204 static int nl80211_update_ft_ies(struct sk_buff *skb, struct genl_info *info) 8205 { 8206 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 8207 struct cfg80211_update_ft_ies_params ft_params; 8208 struct net_device *dev = info->user_ptr[1]; 8209 8210 if (!rdev->ops->update_ft_ies) 8211 return -EOPNOTSUPP; 8212 8213 if (!info->attrs[NL80211_ATTR_MDID] || 8214 !is_valid_ie_attr(info->attrs[NL80211_ATTR_IE])) 8215 return -EINVAL; 8216 8217 memset(&ft_params, 0, sizeof(ft_params)); 8218 ft_params.md = nla_get_u16(info->attrs[NL80211_ATTR_MDID]); 8219 ft_params.ie = nla_data(info->attrs[NL80211_ATTR_IE]); 8220 ft_params.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); 8221 8222 return rdev_update_ft_ies(rdev, dev, &ft_params); 8223 } 8224 8225 static int nl80211_crit_protocol_start(struct sk_buff *skb, 8226 struct genl_info *info) 8227 { 8228 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 8229 struct wireless_dev *wdev = info->user_ptr[1]; 8230 enum nl80211_crit_proto_id proto = NL80211_CRIT_PROTO_UNSPEC; 8231 u16 duration; 8232 int ret; 8233 8234 if (!rdev->ops->crit_proto_start) 8235 return -EOPNOTSUPP; 8236 8237 if (WARN_ON(!rdev->ops->crit_proto_stop)) 8238 return -EINVAL; 8239 8240 if (rdev->crit_proto_nlportid) 8241 return -EBUSY; 8242 8243 /* determine protocol if provided */ 8244 if (info->attrs[NL80211_ATTR_CRIT_PROT_ID]) 8245 proto = nla_get_u16(info->attrs[NL80211_ATTR_CRIT_PROT_ID]); 8246 8247 if (proto >= NUM_NL80211_CRIT_PROTO) 8248 return -EINVAL; 8249 8250 /* timeout must be provided */ 8251 if (!info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION]) 8252 return -EINVAL; 8253 8254 duration = 8255 nla_get_u16(info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION]); 8256 8257 if (duration > NL80211_CRIT_PROTO_MAX_DURATION) 8258 return -ERANGE; 8259 8260 ret = rdev_crit_proto_start(rdev, wdev, proto, duration); 8261 if (!ret) 8262 rdev->crit_proto_nlportid = info->snd_portid; 8263 8264 return ret; 8265 } 8266 8267 static int nl80211_crit_protocol_stop(struct sk_buff *skb, 8268 struct genl_info *info) 8269 { 8270 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 8271 struct wireless_dev *wdev = info->user_ptr[1]; 8272 8273 if (!rdev->ops->crit_proto_stop) 8274 return -EOPNOTSUPP; 8275 8276 if (rdev->crit_proto_nlportid) { 8277 rdev->crit_proto_nlportid = 0; 8278 rdev_crit_proto_stop(rdev, wdev); 8279 } 8280 return 0; 8281 } 8282 8283 #define NL80211_FLAG_NEED_WIPHY 0x01 8284 #define NL80211_FLAG_NEED_NETDEV 0x02 8285 #define NL80211_FLAG_NEED_RTNL 0x04 8286 #define NL80211_FLAG_CHECK_NETDEV_UP 0x08 8287 #define NL80211_FLAG_NEED_NETDEV_UP (NL80211_FLAG_NEED_NETDEV |\ 8288 NL80211_FLAG_CHECK_NETDEV_UP) 8289 #define NL80211_FLAG_NEED_WDEV 0x10 8290 /* If a netdev is associated, it must be UP, P2P must be started */ 8291 #define NL80211_FLAG_NEED_WDEV_UP (NL80211_FLAG_NEED_WDEV |\ 8292 NL80211_FLAG_CHECK_NETDEV_UP) 8293 8294 static int nl80211_pre_doit(struct genl_ops *ops, struct sk_buff *skb, 8295 struct genl_info *info) 8296 { 8297 struct cfg80211_registered_device *rdev; 8298 struct wireless_dev *wdev; 8299 struct net_device *dev; 8300 bool rtnl = ops->internal_flags & NL80211_FLAG_NEED_RTNL; 8301 8302 if (rtnl) 8303 rtnl_lock(); 8304 8305 if (ops->internal_flags & NL80211_FLAG_NEED_WIPHY) { 8306 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info); 8307 if (IS_ERR(rdev)) { 8308 if (rtnl) 8309 rtnl_unlock(); 8310 return PTR_ERR(rdev); 8311 } 8312 info->user_ptr[0] = rdev; 8313 } else if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV || 8314 ops->internal_flags & NL80211_FLAG_NEED_WDEV) { 8315 mutex_lock(&cfg80211_mutex); 8316 wdev = __cfg80211_wdev_from_attrs(genl_info_net(info), 8317 info->attrs); 8318 if (IS_ERR(wdev)) { 8319 mutex_unlock(&cfg80211_mutex); 8320 if (rtnl) 8321 rtnl_unlock(); 8322 return PTR_ERR(wdev); 8323 } 8324 8325 dev = wdev->netdev; 8326 rdev = wiphy_to_dev(wdev->wiphy); 8327 8328 if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV) { 8329 if (!dev) { 8330 mutex_unlock(&cfg80211_mutex); 8331 if (rtnl) 8332 rtnl_unlock(); 8333 return -EINVAL; 8334 } 8335 8336 info->user_ptr[1] = dev; 8337 } else { 8338 info->user_ptr[1] = wdev; 8339 } 8340 8341 if (dev) { 8342 if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP && 8343 !netif_running(dev)) { 8344 mutex_unlock(&cfg80211_mutex); 8345 if (rtnl) 8346 rtnl_unlock(); 8347 return -ENETDOWN; 8348 } 8349 8350 dev_hold(dev); 8351 } else if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP) { 8352 if (!wdev->p2p_started) { 8353 mutex_unlock(&cfg80211_mutex); 8354 if (rtnl) 8355 rtnl_unlock(); 8356 return -ENETDOWN; 8357 } 8358 } 8359 8360 cfg80211_lock_rdev(rdev); 8361 8362 mutex_unlock(&cfg80211_mutex); 8363 8364 info->user_ptr[0] = rdev; 8365 } 8366 8367 return 0; 8368 } 8369 8370 static void nl80211_post_doit(struct genl_ops *ops, struct sk_buff *skb, 8371 struct genl_info *info) 8372 { 8373 if (info->user_ptr[0]) 8374 cfg80211_unlock_rdev(info->user_ptr[0]); 8375 if (info->user_ptr[1]) { 8376 if (ops->internal_flags & NL80211_FLAG_NEED_WDEV) { 8377 struct wireless_dev *wdev = info->user_ptr[1]; 8378 8379 if (wdev->netdev) 8380 dev_put(wdev->netdev); 8381 } else { 8382 dev_put(info->user_ptr[1]); 8383 } 8384 } 8385 if (ops->internal_flags & NL80211_FLAG_NEED_RTNL) 8386 rtnl_unlock(); 8387 } 8388 8389 static struct genl_ops nl80211_ops[] = { 8390 { 8391 .cmd = NL80211_CMD_GET_WIPHY, 8392 .doit = nl80211_get_wiphy, 8393 .dumpit = nl80211_dump_wiphy, 8394 .policy = nl80211_policy, 8395 /* can be retrieved by unprivileged users */ 8396 .internal_flags = NL80211_FLAG_NEED_WIPHY, 8397 }, 8398 { 8399 .cmd = NL80211_CMD_SET_WIPHY, 8400 .doit = nl80211_set_wiphy, 8401 .policy = nl80211_policy, 8402 .flags = GENL_ADMIN_PERM, 8403 .internal_flags = NL80211_FLAG_NEED_RTNL, 8404 }, 8405 { 8406 .cmd = NL80211_CMD_GET_INTERFACE, 8407 .doit = nl80211_get_interface, 8408 .dumpit = nl80211_dump_interface, 8409 .policy = nl80211_policy, 8410 /* can be retrieved by unprivileged users */ 8411 .internal_flags = NL80211_FLAG_NEED_WDEV, 8412 }, 8413 { 8414 .cmd = NL80211_CMD_SET_INTERFACE, 8415 .doit = nl80211_set_interface, 8416 .policy = nl80211_policy, 8417 .flags = GENL_ADMIN_PERM, 8418 .internal_flags = NL80211_FLAG_NEED_NETDEV | 8419 NL80211_FLAG_NEED_RTNL, 8420 }, 8421 { 8422 .cmd = NL80211_CMD_NEW_INTERFACE, 8423 .doit = nl80211_new_interface, 8424 .policy = nl80211_policy, 8425 .flags = GENL_ADMIN_PERM, 8426 .internal_flags = NL80211_FLAG_NEED_WIPHY | 8427 NL80211_FLAG_NEED_RTNL, 8428 }, 8429 { 8430 .cmd = NL80211_CMD_DEL_INTERFACE, 8431 .doit = nl80211_del_interface, 8432 .policy = nl80211_policy, 8433 .flags = GENL_ADMIN_PERM, 8434 .internal_flags = NL80211_FLAG_NEED_WDEV | 8435 NL80211_FLAG_NEED_RTNL, 8436 }, 8437 { 8438 .cmd = NL80211_CMD_GET_KEY, 8439 .doit = nl80211_get_key, 8440 .policy = nl80211_policy, 8441 .flags = GENL_ADMIN_PERM, 8442 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 8443 NL80211_FLAG_NEED_RTNL, 8444 }, 8445 { 8446 .cmd = NL80211_CMD_SET_KEY, 8447 .doit = nl80211_set_key, 8448 .policy = nl80211_policy, 8449 .flags = GENL_ADMIN_PERM, 8450 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 8451 NL80211_FLAG_NEED_RTNL, 8452 }, 8453 { 8454 .cmd = NL80211_CMD_NEW_KEY, 8455 .doit = nl80211_new_key, 8456 .policy = nl80211_policy, 8457 .flags = GENL_ADMIN_PERM, 8458 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 8459 NL80211_FLAG_NEED_RTNL, 8460 }, 8461 { 8462 .cmd = NL80211_CMD_DEL_KEY, 8463 .doit = nl80211_del_key, 8464 .policy = nl80211_policy, 8465 .flags = GENL_ADMIN_PERM, 8466 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 8467 NL80211_FLAG_NEED_RTNL, 8468 }, 8469 { 8470 .cmd = NL80211_CMD_SET_BEACON, 8471 .policy = nl80211_policy, 8472 .flags = GENL_ADMIN_PERM, 8473 .doit = nl80211_set_beacon, 8474 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 8475 NL80211_FLAG_NEED_RTNL, 8476 }, 8477 { 8478 .cmd = NL80211_CMD_START_AP, 8479 .policy = nl80211_policy, 8480 .flags = GENL_ADMIN_PERM, 8481 .doit = nl80211_start_ap, 8482 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 8483 NL80211_FLAG_NEED_RTNL, 8484 }, 8485 { 8486 .cmd = NL80211_CMD_STOP_AP, 8487 .policy = nl80211_policy, 8488 .flags = GENL_ADMIN_PERM, 8489 .doit = nl80211_stop_ap, 8490 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 8491 NL80211_FLAG_NEED_RTNL, 8492 }, 8493 { 8494 .cmd = NL80211_CMD_GET_STATION, 8495 .doit = nl80211_get_station, 8496 .dumpit = nl80211_dump_station, 8497 .policy = nl80211_policy, 8498 .internal_flags = NL80211_FLAG_NEED_NETDEV | 8499 NL80211_FLAG_NEED_RTNL, 8500 }, 8501 { 8502 .cmd = NL80211_CMD_SET_STATION, 8503 .doit = nl80211_set_station, 8504 .policy = nl80211_policy, 8505 .flags = GENL_ADMIN_PERM, 8506 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 8507 NL80211_FLAG_NEED_RTNL, 8508 }, 8509 { 8510 .cmd = NL80211_CMD_NEW_STATION, 8511 .doit = nl80211_new_station, 8512 .policy = nl80211_policy, 8513 .flags = GENL_ADMIN_PERM, 8514 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 8515 NL80211_FLAG_NEED_RTNL, 8516 }, 8517 { 8518 .cmd = NL80211_CMD_DEL_STATION, 8519 .doit = nl80211_del_station, 8520 .policy = nl80211_policy, 8521 .flags = GENL_ADMIN_PERM, 8522 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 8523 NL80211_FLAG_NEED_RTNL, 8524 }, 8525 { 8526 .cmd = NL80211_CMD_GET_MPATH, 8527 .doit = nl80211_get_mpath, 8528 .dumpit = nl80211_dump_mpath, 8529 .policy = nl80211_policy, 8530 .flags = GENL_ADMIN_PERM, 8531 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 8532 NL80211_FLAG_NEED_RTNL, 8533 }, 8534 { 8535 .cmd = NL80211_CMD_SET_MPATH, 8536 .doit = nl80211_set_mpath, 8537 .policy = nl80211_policy, 8538 .flags = GENL_ADMIN_PERM, 8539 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 8540 NL80211_FLAG_NEED_RTNL, 8541 }, 8542 { 8543 .cmd = NL80211_CMD_NEW_MPATH, 8544 .doit = nl80211_new_mpath, 8545 .policy = nl80211_policy, 8546 .flags = GENL_ADMIN_PERM, 8547 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 8548 NL80211_FLAG_NEED_RTNL, 8549 }, 8550 { 8551 .cmd = NL80211_CMD_DEL_MPATH, 8552 .doit = nl80211_del_mpath, 8553 .policy = nl80211_policy, 8554 .flags = GENL_ADMIN_PERM, 8555 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 8556 NL80211_FLAG_NEED_RTNL, 8557 }, 8558 { 8559 .cmd = NL80211_CMD_SET_BSS, 8560 .doit = nl80211_set_bss, 8561 .policy = nl80211_policy, 8562 .flags = GENL_ADMIN_PERM, 8563 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 8564 NL80211_FLAG_NEED_RTNL, 8565 }, 8566 { 8567 .cmd = NL80211_CMD_GET_REG, 8568 .doit = nl80211_get_reg, 8569 .policy = nl80211_policy, 8570 /* can be retrieved by unprivileged users */ 8571 }, 8572 { 8573 .cmd = NL80211_CMD_SET_REG, 8574 .doit = nl80211_set_reg, 8575 .policy = nl80211_policy, 8576 .flags = GENL_ADMIN_PERM, 8577 }, 8578 { 8579 .cmd = NL80211_CMD_REQ_SET_REG, 8580 .doit = nl80211_req_set_reg, 8581 .policy = nl80211_policy, 8582 .flags = GENL_ADMIN_PERM, 8583 }, 8584 { 8585 .cmd = NL80211_CMD_GET_MESH_CONFIG, 8586 .doit = nl80211_get_mesh_config, 8587 .policy = nl80211_policy, 8588 /* can be retrieved by unprivileged users */ 8589 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 8590 NL80211_FLAG_NEED_RTNL, 8591 }, 8592 { 8593 .cmd = NL80211_CMD_SET_MESH_CONFIG, 8594 .doit = nl80211_update_mesh_config, 8595 .policy = nl80211_policy, 8596 .flags = GENL_ADMIN_PERM, 8597 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 8598 NL80211_FLAG_NEED_RTNL, 8599 }, 8600 { 8601 .cmd = NL80211_CMD_TRIGGER_SCAN, 8602 .doit = nl80211_trigger_scan, 8603 .policy = nl80211_policy, 8604 .flags = GENL_ADMIN_PERM, 8605 .internal_flags = NL80211_FLAG_NEED_WDEV_UP | 8606 NL80211_FLAG_NEED_RTNL, 8607 }, 8608 { 8609 .cmd = NL80211_CMD_GET_SCAN, 8610 .policy = nl80211_policy, 8611 .dumpit = nl80211_dump_scan, 8612 }, 8613 { 8614 .cmd = NL80211_CMD_START_SCHED_SCAN, 8615 .doit = nl80211_start_sched_scan, 8616 .policy = nl80211_policy, 8617 .flags = GENL_ADMIN_PERM, 8618 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 8619 NL80211_FLAG_NEED_RTNL, 8620 }, 8621 { 8622 .cmd = NL80211_CMD_STOP_SCHED_SCAN, 8623 .doit = nl80211_stop_sched_scan, 8624 .policy = nl80211_policy, 8625 .flags = GENL_ADMIN_PERM, 8626 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 8627 NL80211_FLAG_NEED_RTNL, 8628 }, 8629 { 8630 .cmd = NL80211_CMD_AUTHENTICATE, 8631 .doit = nl80211_authenticate, 8632 .policy = nl80211_policy, 8633 .flags = GENL_ADMIN_PERM, 8634 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 8635 NL80211_FLAG_NEED_RTNL, 8636 }, 8637 { 8638 .cmd = NL80211_CMD_ASSOCIATE, 8639 .doit = nl80211_associate, 8640 .policy = nl80211_policy, 8641 .flags = GENL_ADMIN_PERM, 8642 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 8643 NL80211_FLAG_NEED_RTNL, 8644 }, 8645 { 8646 .cmd = NL80211_CMD_DEAUTHENTICATE, 8647 .doit = nl80211_deauthenticate, 8648 .policy = nl80211_policy, 8649 .flags = GENL_ADMIN_PERM, 8650 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 8651 NL80211_FLAG_NEED_RTNL, 8652 }, 8653 { 8654 .cmd = NL80211_CMD_DISASSOCIATE, 8655 .doit = nl80211_disassociate, 8656 .policy = nl80211_policy, 8657 .flags = GENL_ADMIN_PERM, 8658 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 8659 NL80211_FLAG_NEED_RTNL, 8660 }, 8661 { 8662 .cmd = NL80211_CMD_JOIN_IBSS, 8663 .doit = nl80211_join_ibss, 8664 .policy = nl80211_policy, 8665 .flags = GENL_ADMIN_PERM, 8666 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 8667 NL80211_FLAG_NEED_RTNL, 8668 }, 8669 { 8670 .cmd = NL80211_CMD_LEAVE_IBSS, 8671 .doit = nl80211_leave_ibss, 8672 .policy = nl80211_policy, 8673 .flags = GENL_ADMIN_PERM, 8674 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 8675 NL80211_FLAG_NEED_RTNL, 8676 }, 8677 #ifdef CONFIG_NL80211_TESTMODE 8678 { 8679 .cmd = NL80211_CMD_TESTMODE, 8680 .doit = nl80211_testmode_do, 8681 .dumpit = nl80211_testmode_dump, 8682 .policy = nl80211_policy, 8683 .flags = GENL_ADMIN_PERM, 8684 .internal_flags = NL80211_FLAG_NEED_WIPHY | 8685 NL80211_FLAG_NEED_RTNL, 8686 }, 8687 #endif 8688 { 8689 .cmd = NL80211_CMD_CONNECT, 8690 .doit = nl80211_connect, 8691 .policy = nl80211_policy, 8692 .flags = GENL_ADMIN_PERM, 8693 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 8694 NL80211_FLAG_NEED_RTNL, 8695 }, 8696 { 8697 .cmd = NL80211_CMD_DISCONNECT, 8698 .doit = nl80211_disconnect, 8699 .policy = nl80211_policy, 8700 .flags = GENL_ADMIN_PERM, 8701 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 8702 NL80211_FLAG_NEED_RTNL, 8703 }, 8704 { 8705 .cmd = NL80211_CMD_SET_WIPHY_NETNS, 8706 .doit = nl80211_wiphy_netns, 8707 .policy = nl80211_policy, 8708 .flags = GENL_ADMIN_PERM, 8709 .internal_flags = NL80211_FLAG_NEED_WIPHY | 8710 NL80211_FLAG_NEED_RTNL, 8711 }, 8712 { 8713 .cmd = NL80211_CMD_GET_SURVEY, 8714 .policy = nl80211_policy, 8715 .dumpit = nl80211_dump_survey, 8716 }, 8717 { 8718 .cmd = NL80211_CMD_SET_PMKSA, 8719 .doit = nl80211_setdel_pmksa, 8720 .policy = nl80211_policy, 8721 .flags = GENL_ADMIN_PERM, 8722 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 8723 NL80211_FLAG_NEED_RTNL, 8724 }, 8725 { 8726 .cmd = NL80211_CMD_DEL_PMKSA, 8727 .doit = nl80211_setdel_pmksa, 8728 .policy = nl80211_policy, 8729 .flags = GENL_ADMIN_PERM, 8730 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 8731 NL80211_FLAG_NEED_RTNL, 8732 }, 8733 { 8734 .cmd = NL80211_CMD_FLUSH_PMKSA, 8735 .doit = nl80211_flush_pmksa, 8736 .policy = nl80211_policy, 8737 .flags = GENL_ADMIN_PERM, 8738 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 8739 NL80211_FLAG_NEED_RTNL, 8740 }, 8741 { 8742 .cmd = NL80211_CMD_REMAIN_ON_CHANNEL, 8743 .doit = nl80211_remain_on_channel, 8744 .policy = nl80211_policy, 8745 .flags = GENL_ADMIN_PERM, 8746 .internal_flags = NL80211_FLAG_NEED_WDEV_UP | 8747 NL80211_FLAG_NEED_RTNL, 8748 }, 8749 { 8750 .cmd = NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL, 8751 .doit = nl80211_cancel_remain_on_channel, 8752 .policy = nl80211_policy, 8753 .flags = GENL_ADMIN_PERM, 8754 .internal_flags = NL80211_FLAG_NEED_WDEV_UP | 8755 NL80211_FLAG_NEED_RTNL, 8756 }, 8757 { 8758 .cmd = NL80211_CMD_SET_TX_BITRATE_MASK, 8759 .doit = nl80211_set_tx_bitrate_mask, 8760 .policy = nl80211_policy, 8761 .flags = GENL_ADMIN_PERM, 8762 .internal_flags = NL80211_FLAG_NEED_NETDEV | 8763 NL80211_FLAG_NEED_RTNL, 8764 }, 8765 { 8766 .cmd = NL80211_CMD_REGISTER_FRAME, 8767 .doit = nl80211_register_mgmt, 8768 .policy = nl80211_policy, 8769 .flags = GENL_ADMIN_PERM, 8770 .internal_flags = NL80211_FLAG_NEED_WDEV | 8771 NL80211_FLAG_NEED_RTNL, 8772 }, 8773 { 8774 .cmd = NL80211_CMD_FRAME, 8775 .doit = nl80211_tx_mgmt, 8776 .policy = nl80211_policy, 8777 .flags = GENL_ADMIN_PERM, 8778 .internal_flags = NL80211_FLAG_NEED_WDEV_UP | 8779 NL80211_FLAG_NEED_RTNL, 8780 }, 8781 { 8782 .cmd = NL80211_CMD_FRAME_WAIT_CANCEL, 8783 .doit = nl80211_tx_mgmt_cancel_wait, 8784 .policy = nl80211_policy, 8785 .flags = GENL_ADMIN_PERM, 8786 .internal_flags = NL80211_FLAG_NEED_WDEV_UP | 8787 NL80211_FLAG_NEED_RTNL, 8788 }, 8789 { 8790 .cmd = NL80211_CMD_SET_POWER_SAVE, 8791 .doit = nl80211_set_power_save, 8792 .policy = nl80211_policy, 8793 .flags = GENL_ADMIN_PERM, 8794 .internal_flags = NL80211_FLAG_NEED_NETDEV | 8795 NL80211_FLAG_NEED_RTNL, 8796 }, 8797 { 8798 .cmd = NL80211_CMD_GET_POWER_SAVE, 8799 .doit = nl80211_get_power_save, 8800 .policy = nl80211_policy, 8801 /* can be retrieved by unprivileged users */ 8802 .internal_flags = NL80211_FLAG_NEED_NETDEV | 8803 NL80211_FLAG_NEED_RTNL, 8804 }, 8805 { 8806 .cmd = NL80211_CMD_SET_CQM, 8807 .doit = nl80211_set_cqm, 8808 .policy = nl80211_policy, 8809 .flags = GENL_ADMIN_PERM, 8810 .internal_flags = NL80211_FLAG_NEED_NETDEV | 8811 NL80211_FLAG_NEED_RTNL, 8812 }, 8813 { 8814 .cmd = NL80211_CMD_SET_CHANNEL, 8815 .doit = nl80211_set_channel, 8816 .policy = nl80211_policy, 8817 .flags = GENL_ADMIN_PERM, 8818 .internal_flags = NL80211_FLAG_NEED_NETDEV | 8819 NL80211_FLAG_NEED_RTNL, 8820 }, 8821 { 8822 .cmd = NL80211_CMD_SET_WDS_PEER, 8823 .doit = nl80211_set_wds_peer, 8824 .policy = nl80211_policy, 8825 .flags = GENL_ADMIN_PERM, 8826 .internal_flags = NL80211_FLAG_NEED_NETDEV | 8827 NL80211_FLAG_NEED_RTNL, 8828 }, 8829 { 8830 .cmd = NL80211_CMD_JOIN_MESH, 8831 .doit = nl80211_join_mesh, 8832 .policy = nl80211_policy, 8833 .flags = GENL_ADMIN_PERM, 8834 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 8835 NL80211_FLAG_NEED_RTNL, 8836 }, 8837 { 8838 .cmd = NL80211_CMD_LEAVE_MESH, 8839 .doit = nl80211_leave_mesh, 8840 .policy = nl80211_policy, 8841 .flags = GENL_ADMIN_PERM, 8842 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 8843 NL80211_FLAG_NEED_RTNL, 8844 }, 8845 #ifdef CONFIG_PM 8846 { 8847 .cmd = NL80211_CMD_GET_WOWLAN, 8848 .doit = nl80211_get_wowlan, 8849 .policy = nl80211_policy, 8850 /* can be retrieved by unprivileged users */ 8851 .internal_flags = NL80211_FLAG_NEED_WIPHY | 8852 NL80211_FLAG_NEED_RTNL, 8853 }, 8854 { 8855 .cmd = NL80211_CMD_SET_WOWLAN, 8856 .doit = nl80211_set_wowlan, 8857 .policy = nl80211_policy, 8858 .flags = GENL_ADMIN_PERM, 8859 .internal_flags = NL80211_FLAG_NEED_WIPHY | 8860 NL80211_FLAG_NEED_RTNL, 8861 }, 8862 #endif 8863 { 8864 .cmd = NL80211_CMD_SET_REKEY_OFFLOAD, 8865 .doit = nl80211_set_rekey_data, 8866 .policy = nl80211_policy, 8867 .flags = GENL_ADMIN_PERM, 8868 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 8869 NL80211_FLAG_NEED_RTNL, 8870 }, 8871 { 8872 .cmd = NL80211_CMD_TDLS_MGMT, 8873 .doit = nl80211_tdls_mgmt, 8874 .policy = nl80211_policy, 8875 .flags = GENL_ADMIN_PERM, 8876 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 8877 NL80211_FLAG_NEED_RTNL, 8878 }, 8879 { 8880 .cmd = NL80211_CMD_TDLS_OPER, 8881 .doit = nl80211_tdls_oper, 8882 .policy = nl80211_policy, 8883 .flags = GENL_ADMIN_PERM, 8884 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 8885 NL80211_FLAG_NEED_RTNL, 8886 }, 8887 { 8888 .cmd = NL80211_CMD_UNEXPECTED_FRAME, 8889 .doit = nl80211_register_unexpected_frame, 8890 .policy = nl80211_policy, 8891 .flags = GENL_ADMIN_PERM, 8892 .internal_flags = NL80211_FLAG_NEED_NETDEV | 8893 NL80211_FLAG_NEED_RTNL, 8894 }, 8895 { 8896 .cmd = NL80211_CMD_PROBE_CLIENT, 8897 .doit = nl80211_probe_client, 8898 .policy = nl80211_policy, 8899 .flags = GENL_ADMIN_PERM, 8900 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 8901 NL80211_FLAG_NEED_RTNL, 8902 }, 8903 { 8904 .cmd = NL80211_CMD_REGISTER_BEACONS, 8905 .doit = nl80211_register_beacons, 8906 .policy = nl80211_policy, 8907 .flags = GENL_ADMIN_PERM, 8908 .internal_flags = NL80211_FLAG_NEED_WIPHY | 8909 NL80211_FLAG_NEED_RTNL, 8910 }, 8911 { 8912 .cmd = NL80211_CMD_SET_NOACK_MAP, 8913 .doit = nl80211_set_noack_map, 8914 .policy = nl80211_policy, 8915 .flags = GENL_ADMIN_PERM, 8916 .internal_flags = NL80211_FLAG_NEED_NETDEV | 8917 NL80211_FLAG_NEED_RTNL, 8918 }, 8919 { 8920 .cmd = NL80211_CMD_START_P2P_DEVICE, 8921 .doit = nl80211_start_p2p_device, 8922 .policy = nl80211_policy, 8923 .flags = GENL_ADMIN_PERM, 8924 .internal_flags = NL80211_FLAG_NEED_WDEV | 8925 NL80211_FLAG_NEED_RTNL, 8926 }, 8927 { 8928 .cmd = NL80211_CMD_STOP_P2P_DEVICE, 8929 .doit = nl80211_stop_p2p_device, 8930 .policy = nl80211_policy, 8931 .flags = GENL_ADMIN_PERM, 8932 .internal_flags = NL80211_FLAG_NEED_WDEV_UP | 8933 NL80211_FLAG_NEED_RTNL, 8934 }, 8935 { 8936 .cmd = NL80211_CMD_SET_MCAST_RATE, 8937 .doit = nl80211_set_mcast_rate, 8938 .policy = nl80211_policy, 8939 .flags = GENL_ADMIN_PERM, 8940 .internal_flags = NL80211_FLAG_NEED_NETDEV | 8941 NL80211_FLAG_NEED_RTNL, 8942 }, 8943 { 8944 .cmd = NL80211_CMD_SET_MAC_ACL, 8945 .doit = nl80211_set_mac_acl, 8946 .policy = nl80211_policy, 8947 .flags = GENL_ADMIN_PERM, 8948 .internal_flags = NL80211_FLAG_NEED_NETDEV | 8949 NL80211_FLAG_NEED_RTNL, 8950 }, 8951 { 8952 .cmd = NL80211_CMD_RADAR_DETECT, 8953 .doit = nl80211_start_radar_detection, 8954 .policy = nl80211_policy, 8955 .flags = GENL_ADMIN_PERM, 8956 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 8957 NL80211_FLAG_NEED_RTNL, 8958 }, 8959 { 8960 .cmd = NL80211_CMD_GET_PROTOCOL_FEATURES, 8961 .doit = nl80211_get_protocol_features, 8962 .policy = nl80211_policy, 8963 }, 8964 { 8965 .cmd = NL80211_CMD_UPDATE_FT_IES, 8966 .doit = nl80211_update_ft_ies, 8967 .policy = nl80211_policy, 8968 .flags = GENL_ADMIN_PERM, 8969 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 8970 NL80211_FLAG_NEED_RTNL, 8971 }, 8972 { 8973 .cmd = NL80211_CMD_CRIT_PROTOCOL_START, 8974 .doit = nl80211_crit_protocol_start, 8975 .policy = nl80211_policy, 8976 .flags = GENL_ADMIN_PERM, 8977 .internal_flags = NL80211_FLAG_NEED_WDEV_UP | 8978 NL80211_FLAG_NEED_RTNL, 8979 }, 8980 { 8981 .cmd = NL80211_CMD_CRIT_PROTOCOL_STOP, 8982 .doit = nl80211_crit_protocol_stop, 8983 .policy = nl80211_policy, 8984 .flags = GENL_ADMIN_PERM, 8985 .internal_flags = NL80211_FLAG_NEED_WDEV_UP | 8986 NL80211_FLAG_NEED_RTNL, 8987 } 8988 }; 8989 8990 static struct genl_multicast_group nl80211_mlme_mcgrp = { 8991 .name = "mlme", 8992 }; 8993 8994 /* multicast groups */ 8995 static struct genl_multicast_group nl80211_config_mcgrp = { 8996 .name = "config", 8997 }; 8998 static struct genl_multicast_group nl80211_scan_mcgrp = { 8999 .name = "scan", 9000 }; 9001 static struct genl_multicast_group nl80211_regulatory_mcgrp = { 9002 .name = "regulatory", 9003 }; 9004 9005 /* notification functions */ 9006 9007 void nl80211_notify_dev_rename(struct cfg80211_registered_device *rdev) 9008 { 9009 struct sk_buff *msg; 9010 9011 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 9012 if (!msg) 9013 return; 9014 9015 if (nl80211_send_wiphy(rdev, msg, 0, 0, 0, 9016 false, NULL, NULL, NULL) < 0) { 9017 nlmsg_free(msg); 9018 return; 9019 } 9020 9021 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0, 9022 nl80211_config_mcgrp.id, GFP_KERNEL); 9023 } 9024 9025 static int nl80211_add_scan_req(struct sk_buff *msg, 9026 struct cfg80211_registered_device *rdev) 9027 { 9028 struct cfg80211_scan_request *req = rdev->scan_req; 9029 struct nlattr *nest; 9030 int i; 9031 9032 lockdep_assert_held(&rdev->sched_scan_mtx); 9033 9034 if (WARN_ON(!req)) 9035 return 0; 9036 9037 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_SSIDS); 9038 if (!nest) 9039 goto nla_put_failure; 9040 for (i = 0; i < req->n_ssids; i++) { 9041 if (nla_put(msg, i, req->ssids[i].ssid_len, req->ssids[i].ssid)) 9042 goto nla_put_failure; 9043 } 9044 nla_nest_end(msg, nest); 9045 9046 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES); 9047 if (!nest) 9048 goto nla_put_failure; 9049 for (i = 0; i < req->n_channels; i++) { 9050 if (nla_put_u32(msg, i, req->channels[i]->center_freq)) 9051 goto nla_put_failure; 9052 } 9053 nla_nest_end(msg, nest); 9054 9055 if (req->ie && 9056 nla_put(msg, NL80211_ATTR_IE, req->ie_len, req->ie)) 9057 goto nla_put_failure; 9058 9059 if (req->flags) 9060 nla_put_u32(msg, NL80211_ATTR_SCAN_FLAGS, req->flags); 9061 9062 return 0; 9063 nla_put_failure: 9064 return -ENOBUFS; 9065 } 9066 9067 static int nl80211_send_scan_msg(struct sk_buff *msg, 9068 struct cfg80211_registered_device *rdev, 9069 struct wireless_dev *wdev, 9070 u32 portid, u32 seq, int flags, 9071 u32 cmd) 9072 { 9073 void *hdr; 9074 9075 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd); 9076 if (!hdr) 9077 return -1; 9078 9079 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 9080 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX, 9081 wdev->netdev->ifindex)) || 9082 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev))) 9083 goto nla_put_failure; 9084 9085 /* ignore errors and send incomplete event anyway */ 9086 nl80211_add_scan_req(msg, rdev); 9087 9088 return genlmsg_end(msg, hdr); 9089 9090 nla_put_failure: 9091 genlmsg_cancel(msg, hdr); 9092 return -EMSGSIZE; 9093 } 9094 9095 static int 9096 nl80211_send_sched_scan_msg(struct sk_buff *msg, 9097 struct cfg80211_registered_device *rdev, 9098 struct net_device *netdev, 9099 u32 portid, u32 seq, int flags, u32 cmd) 9100 { 9101 void *hdr; 9102 9103 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd); 9104 if (!hdr) 9105 return -1; 9106 9107 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 9108 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex)) 9109 goto nla_put_failure; 9110 9111 return genlmsg_end(msg, hdr); 9112 9113 nla_put_failure: 9114 genlmsg_cancel(msg, hdr); 9115 return -EMSGSIZE; 9116 } 9117 9118 void nl80211_send_scan_start(struct cfg80211_registered_device *rdev, 9119 struct wireless_dev *wdev) 9120 { 9121 struct sk_buff *msg; 9122 9123 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 9124 if (!msg) 9125 return; 9126 9127 if (nl80211_send_scan_msg(msg, rdev, wdev, 0, 0, 0, 9128 NL80211_CMD_TRIGGER_SCAN) < 0) { 9129 nlmsg_free(msg); 9130 return; 9131 } 9132 9133 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0, 9134 nl80211_scan_mcgrp.id, GFP_KERNEL); 9135 } 9136 9137 void nl80211_send_scan_done(struct cfg80211_registered_device *rdev, 9138 struct wireless_dev *wdev) 9139 { 9140 struct sk_buff *msg; 9141 9142 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 9143 if (!msg) 9144 return; 9145 9146 if (nl80211_send_scan_msg(msg, rdev, wdev, 0, 0, 0, 9147 NL80211_CMD_NEW_SCAN_RESULTS) < 0) { 9148 nlmsg_free(msg); 9149 return; 9150 } 9151 9152 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0, 9153 nl80211_scan_mcgrp.id, GFP_KERNEL); 9154 } 9155 9156 void nl80211_send_scan_aborted(struct cfg80211_registered_device *rdev, 9157 struct wireless_dev *wdev) 9158 { 9159 struct sk_buff *msg; 9160 9161 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 9162 if (!msg) 9163 return; 9164 9165 if (nl80211_send_scan_msg(msg, rdev, wdev, 0, 0, 0, 9166 NL80211_CMD_SCAN_ABORTED) < 0) { 9167 nlmsg_free(msg); 9168 return; 9169 } 9170 9171 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0, 9172 nl80211_scan_mcgrp.id, GFP_KERNEL); 9173 } 9174 9175 void nl80211_send_sched_scan_results(struct cfg80211_registered_device *rdev, 9176 struct net_device *netdev) 9177 { 9178 struct sk_buff *msg; 9179 9180 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 9181 if (!msg) 9182 return; 9183 9184 if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0, 9185 NL80211_CMD_SCHED_SCAN_RESULTS) < 0) { 9186 nlmsg_free(msg); 9187 return; 9188 } 9189 9190 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0, 9191 nl80211_scan_mcgrp.id, GFP_KERNEL); 9192 } 9193 9194 void nl80211_send_sched_scan(struct cfg80211_registered_device *rdev, 9195 struct net_device *netdev, u32 cmd) 9196 { 9197 struct sk_buff *msg; 9198 9199 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 9200 if (!msg) 9201 return; 9202 9203 if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0, cmd) < 0) { 9204 nlmsg_free(msg); 9205 return; 9206 } 9207 9208 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0, 9209 nl80211_scan_mcgrp.id, GFP_KERNEL); 9210 } 9211 9212 /* 9213 * This can happen on global regulatory changes or device specific settings 9214 * based on custom world regulatory domains. 9215 */ 9216 void nl80211_send_reg_change_event(struct regulatory_request *request) 9217 { 9218 struct sk_buff *msg; 9219 void *hdr; 9220 9221 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 9222 if (!msg) 9223 return; 9224 9225 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_CHANGE); 9226 if (!hdr) { 9227 nlmsg_free(msg); 9228 return; 9229 } 9230 9231 /* Userspace can always count this one always being set */ 9232 if (nla_put_u8(msg, NL80211_ATTR_REG_INITIATOR, request->initiator)) 9233 goto nla_put_failure; 9234 9235 if (request->alpha2[0] == '0' && request->alpha2[1] == '0') { 9236 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE, 9237 NL80211_REGDOM_TYPE_WORLD)) 9238 goto nla_put_failure; 9239 } else if (request->alpha2[0] == '9' && request->alpha2[1] == '9') { 9240 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE, 9241 NL80211_REGDOM_TYPE_CUSTOM_WORLD)) 9242 goto nla_put_failure; 9243 } else if ((request->alpha2[0] == '9' && request->alpha2[1] == '8') || 9244 request->intersect) { 9245 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE, 9246 NL80211_REGDOM_TYPE_INTERSECTION)) 9247 goto nla_put_failure; 9248 } else { 9249 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE, 9250 NL80211_REGDOM_TYPE_COUNTRY) || 9251 nla_put_string(msg, NL80211_ATTR_REG_ALPHA2, 9252 request->alpha2)) 9253 goto nla_put_failure; 9254 } 9255 9256 if (request->wiphy_idx != WIPHY_IDX_INVALID && 9257 nla_put_u32(msg, NL80211_ATTR_WIPHY, request->wiphy_idx)) 9258 goto nla_put_failure; 9259 9260 genlmsg_end(msg, hdr); 9261 9262 rcu_read_lock(); 9263 genlmsg_multicast_allns(msg, 0, nl80211_regulatory_mcgrp.id, 9264 GFP_ATOMIC); 9265 rcu_read_unlock(); 9266 9267 return; 9268 9269 nla_put_failure: 9270 genlmsg_cancel(msg, hdr); 9271 nlmsg_free(msg); 9272 } 9273 9274 static void nl80211_send_mlme_event(struct cfg80211_registered_device *rdev, 9275 struct net_device *netdev, 9276 const u8 *buf, size_t len, 9277 enum nl80211_commands cmd, gfp_t gfp) 9278 { 9279 struct sk_buff *msg; 9280 void *hdr; 9281 9282 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 9283 if (!msg) 9284 return; 9285 9286 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd); 9287 if (!hdr) { 9288 nlmsg_free(msg); 9289 return; 9290 } 9291 9292 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 9293 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) || 9294 nla_put(msg, NL80211_ATTR_FRAME, len, buf)) 9295 goto nla_put_failure; 9296 9297 genlmsg_end(msg, hdr); 9298 9299 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0, 9300 nl80211_mlme_mcgrp.id, gfp); 9301 return; 9302 9303 nla_put_failure: 9304 genlmsg_cancel(msg, hdr); 9305 nlmsg_free(msg); 9306 } 9307 9308 void nl80211_send_rx_auth(struct cfg80211_registered_device *rdev, 9309 struct net_device *netdev, const u8 *buf, 9310 size_t len, gfp_t gfp) 9311 { 9312 nl80211_send_mlme_event(rdev, netdev, buf, len, 9313 NL80211_CMD_AUTHENTICATE, gfp); 9314 } 9315 9316 void nl80211_send_rx_assoc(struct cfg80211_registered_device *rdev, 9317 struct net_device *netdev, const u8 *buf, 9318 size_t len, gfp_t gfp) 9319 { 9320 nl80211_send_mlme_event(rdev, netdev, buf, len, 9321 NL80211_CMD_ASSOCIATE, gfp); 9322 } 9323 9324 void nl80211_send_deauth(struct cfg80211_registered_device *rdev, 9325 struct net_device *netdev, const u8 *buf, 9326 size_t len, gfp_t gfp) 9327 { 9328 nl80211_send_mlme_event(rdev, netdev, buf, len, 9329 NL80211_CMD_DEAUTHENTICATE, gfp); 9330 } 9331 9332 void nl80211_send_disassoc(struct cfg80211_registered_device *rdev, 9333 struct net_device *netdev, const u8 *buf, 9334 size_t len, gfp_t gfp) 9335 { 9336 nl80211_send_mlme_event(rdev, netdev, buf, len, 9337 NL80211_CMD_DISASSOCIATE, gfp); 9338 } 9339 9340 void cfg80211_send_unprot_deauth(struct net_device *dev, const u8 *buf, 9341 size_t len) 9342 { 9343 struct wireless_dev *wdev = dev->ieee80211_ptr; 9344 struct wiphy *wiphy = wdev->wiphy; 9345 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); 9346 9347 trace_cfg80211_send_unprot_deauth(dev); 9348 nl80211_send_mlme_event(rdev, dev, buf, len, 9349 NL80211_CMD_UNPROT_DEAUTHENTICATE, GFP_ATOMIC); 9350 } 9351 EXPORT_SYMBOL(cfg80211_send_unprot_deauth); 9352 9353 void cfg80211_send_unprot_disassoc(struct net_device *dev, const u8 *buf, 9354 size_t len) 9355 { 9356 struct wireless_dev *wdev = dev->ieee80211_ptr; 9357 struct wiphy *wiphy = wdev->wiphy; 9358 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); 9359 9360 trace_cfg80211_send_unprot_disassoc(dev); 9361 nl80211_send_mlme_event(rdev, dev, buf, len, 9362 NL80211_CMD_UNPROT_DISASSOCIATE, GFP_ATOMIC); 9363 } 9364 EXPORT_SYMBOL(cfg80211_send_unprot_disassoc); 9365 9366 static void nl80211_send_mlme_timeout(struct cfg80211_registered_device *rdev, 9367 struct net_device *netdev, int cmd, 9368 const u8 *addr, gfp_t gfp) 9369 { 9370 struct sk_buff *msg; 9371 void *hdr; 9372 9373 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 9374 if (!msg) 9375 return; 9376 9377 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd); 9378 if (!hdr) { 9379 nlmsg_free(msg); 9380 return; 9381 } 9382 9383 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 9384 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) || 9385 nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) || 9386 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) 9387 goto nla_put_failure; 9388 9389 genlmsg_end(msg, hdr); 9390 9391 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0, 9392 nl80211_mlme_mcgrp.id, gfp); 9393 return; 9394 9395 nla_put_failure: 9396 genlmsg_cancel(msg, hdr); 9397 nlmsg_free(msg); 9398 } 9399 9400 void nl80211_send_auth_timeout(struct cfg80211_registered_device *rdev, 9401 struct net_device *netdev, const u8 *addr, 9402 gfp_t gfp) 9403 { 9404 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_AUTHENTICATE, 9405 addr, gfp); 9406 } 9407 9408 void nl80211_send_assoc_timeout(struct cfg80211_registered_device *rdev, 9409 struct net_device *netdev, const u8 *addr, 9410 gfp_t gfp) 9411 { 9412 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_ASSOCIATE, 9413 addr, gfp); 9414 } 9415 9416 void nl80211_send_connect_result(struct cfg80211_registered_device *rdev, 9417 struct net_device *netdev, const u8 *bssid, 9418 const u8 *req_ie, size_t req_ie_len, 9419 const u8 *resp_ie, size_t resp_ie_len, 9420 u16 status, gfp_t gfp) 9421 { 9422 struct sk_buff *msg; 9423 void *hdr; 9424 9425 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 9426 if (!msg) 9427 return; 9428 9429 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONNECT); 9430 if (!hdr) { 9431 nlmsg_free(msg); 9432 return; 9433 } 9434 9435 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 9436 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) || 9437 (bssid && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid)) || 9438 nla_put_u16(msg, NL80211_ATTR_STATUS_CODE, status) || 9439 (req_ie && 9440 nla_put(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie)) || 9441 (resp_ie && 9442 nla_put(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie))) 9443 goto nla_put_failure; 9444 9445 genlmsg_end(msg, hdr); 9446 9447 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0, 9448 nl80211_mlme_mcgrp.id, gfp); 9449 return; 9450 9451 nla_put_failure: 9452 genlmsg_cancel(msg, hdr); 9453 nlmsg_free(msg); 9454 9455 } 9456 9457 void nl80211_send_roamed(struct cfg80211_registered_device *rdev, 9458 struct net_device *netdev, const u8 *bssid, 9459 const u8 *req_ie, size_t req_ie_len, 9460 const u8 *resp_ie, size_t resp_ie_len, gfp_t gfp) 9461 { 9462 struct sk_buff *msg; 9463 void *hdr; 9464 9465 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 9466 if (!msg) 9467 return; 9468 9469 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ROAM); 9470 if (!hdr) { 9471 nlmsg_free(msg); 9472 return; 9473 } 9474 9475 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 9476 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) || 9477 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid) || 9478 (req_ie && 9479 nla_put(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie)) || 9480 (resp_ie && 9481 nla_put(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie))) 9482 goto nla_put_failure; 9483 9484 genlmsg_end(msg, hdr); 9485 9486 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0, 9487 nl80211_mlme_mcgrp.id, gfp); 9488 return; 9489 9490 nla_put_failure: 9491 genlmsg_cancel(msg, hdr); 9492 nlmsg_free(msg); 9493 9494 } 9495 9496 void nl80211_send_disconnected(struct cfg80211_registered_device *rdev, 9497 struct net_device *netdev, u16 reason, 9498 const u8 *ie, size_t ie_len, bool from_ap) 9499 { 9500 struct sk_buff *msg; 9501 void *hdr; 9502 9503 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 9504 if (!msg) 9505 return; 9506 9507 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DISCONNECT); 9508 if (!hdr) { 9509 nlmsg_free(msg); 9510 return; 9511 } 9512 9513 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 9514 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) || 9515 (from_ap && reason && 9516 nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason)) || 9517 (from_ap && 9518 nla_put_flag(msg, NL80211_ATTR_DISCONNECTED_BY_AP)) || 9519 (ie && nla_put(msg, NL80211_ATTR_IE, ie_len, ie))) 9520 goto nla_put_failure; 9521 9522 genlmsg_end(msg, hdr); 9523 9524 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0, 9525 nl80211_mlme_mcgrp.id, GFP_KERNEL); 9526 return; 9527 9528 nla_put_failure: 9529 genlmsg_cancel(msg, hdr); 9530 nlmsg_free(msg); 9531 9532 } 9533 9534 void nl80211_send_ibss_bssid(struct cfg80211_registered_device *rdev, 9535 struct net_device *netdev, const u8 *bssid, 9536 gfp_t gfp) 9537 { 9538 struct sk_buff *msg; 9539 void *hdr; 9540 9541 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 9542 if (!msg) 9543 return; 9544 9545 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_JOIN_IBSS); 9546 if (!hdr) { 9547 nlmsg_free(msg); 9548 return; 9549 } 9550 9551 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 9552 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) || 9553 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid)) 9554 goto nla_put_failure; 9555 9556 genlmsg_end(msg, hdr); 9557 9558 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0, 9559 nl80211_mlme_mcgrp.id, gfp); 9560 return; 9561 9562 nla_put_failure: 9563 genlmsg_cancel(msg, hdr); 9564 nlmsg_free(msg); 9565 } 9566 9567 void cfg80211_notify_new_peer_candidate(struct net_device *dev, const u8 *addr, 9568 const u8* ie, u8 ie_len, gfp_t gfp) 9569 { 9570 struct wireless_dev *wdev = dev->ieee80211_ptr; 9571 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy); 9572 struct sk_buff *msg; 9573 void *hdr; 9574 9575 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_MESH_POINT)) 9576 return; 9577 9578 trace_cfg80211_notify_new_peer_candidate(dev, addr); 9579 9580 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 9581 if (!msg) 9582 return; 9583 9584 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NEW_PEER_CANDIDATE); 9585 if (!hdr) { 9586 nlmsg_free(msg); 9587 return; 9588 } 9589 9590 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 9591 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) || 9592 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) || 9593 (ie_len && ie && 9594 nla_put(msg, NL80211_ATTR_IE, ie_len , ie))) 9595 goto nla_put_failure; 9596 9597 genlmsg_end(msg, hdr); 9598 9599 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0, 9600 nl80211_mlme_mcgrp.id, gfp); 9601 return; 9602 9603 nla_put_failure: 9604 genlmsg_cancel(msg, hdr); 9605 nlmsg_free(msg); 9606 } 9607 EXPORT_SYMBOL(cfg80211_notify_new_peer_candidate); 9608 9609 void nl80211_michael_mic_failure(struct cfg80211_registered_device *rdev, 9610 struct net_device *netdev, const u8 *addr, 9611 enum nl80211_key_type key_type, int key_id, 9612 const u8 *tsc, gfp_t gfp) 9613 { 9614 struct sk_buff *msg; 9615 void *hdr; 9616 9617 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 9618 if (!msg) 9619 return; 9620 9621 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_MICHAEL_MIC_FAILURE); 9622 if (!hdr) { 9623 nlmsg_free(msg); 9624 return; 9625 } 9626 9627 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 9628 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) || 9629 (addr && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) || 9630 nla_put_u32(msg, NL80211_ATTR_KEY_TYPE, key_type) || 9631 (key_id != -1 && 9632 nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_id)) || 9633 (tsc && nla_put(msg, NL80211_ATTR_KEY_SEQ, 6, tsc))) 9634 goto nla_put_failure; 9635 9636 genlmsg_end(msg, hdr); 9637 9638 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0, 9639 nl80211_mlme_mcgrp.id, gfp); 9640 return; 9641 9642 nla_put_failure: 9643 genlmsg_cancel(msg, hdr); 9644 nlmsg_free(msg); 9645 } 9646 9647 void nl80211_send_beacon_hint_event(struct wiphy *wiphy, 9648 struct ieee80211_channel *channel_before, 9649 struct ieee80211_channel *channel_after) 9650 { 9651 struct sk_buff *msg; 9652 void *hdr; 9653 struct nlattr *nl_freq; 9654 9655 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC); 9656 if (!msg) 9657 return; 9658 9659 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_BEACON_HINT); 9660 if (!hdr) { 9661 nlmsg_free(msg); 9662 return; 9663 } 9664 9665 /* 9666 * Since we are applying the beacon hint to a wiphy we know its 9667 * wiphy_idx is valid 9668 */ 9669 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy))) 9670 goto nla_put_failure; 9671 9672 /* Before */ 9673 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_BEFORE); 9674 if (!nl_freq) 9675 goto nla_put_failure; 9676 if (nl80211_msg_put_channel(msg, channel_before, false)) 9677 goto nla_put_failure; 9678 nla_nest_end(msg, nl_freq); 9679 9680 /* After */ 9681 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_AFTER); 9682 if (!nl_freq) 9683 goto nla_put_failure; 9684 if (nl80211_msg_put_channel(msg, channel_after, false)) 9685 goto nla_put_failure; 9686 nla_nest_end(msg, nl_freq); 9687 9688 genlmsg_end(msg, hdr); 9689 9690 rcu_read_lock(); 9691 genlmsg_multicast_allns(msg, 0, nl80211_regulatory_mcgrp.id, 9692 GFP_ATOMIC); 9693 rcu_read_unlock(); 9694 9695 return; 9696 9697 nla_put_failure: 9698 genlmsg_cancel(msg, hdr); 9699 nlmsg_free(msg); 9700 } 9701 9702 static void nl80211_send_remain_on_chan_event( 9703 int cmd, struct cfg80211_registered_device *rdev, 9704 struct wireless_dev *wdev, u64 cookie, 9705 struct ieee80211_channel *chan, 9706 unsigned int duration, gfp_t gfp) 9707 { 9708 struct sk_buff *msg; 9709 void *hdr; 9710 9711 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 9712 if (!msg) 9713 return; 9714 9715 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd); 9716 if (!hdr) { 9717 nlmsg_free(msg); 9718 return; 9719 } 9720 9721 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 9722 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX, 9723 wdev->netdev->ifindex)) || 9724 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) || 9725 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, chan->center_freq) || 9726 nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE, 9727 NL80211_CHAN_NO_HT) || 9728 nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie)) 9729 goto nla_put_failure; 9730 9731 if (cmd == NL80211_CMD_REMAIN_ON_CHANNEL && 9732 nla_put_u32(msg, NL80211_ATTR_DURATION, duration)) 9733 goto nla_put_failure; 9734 9735 genlmsg_end(msg, hdr); 9736 9737 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0, 9738 nl80211_mlme_mcgrp.id, gfp); 9739 return; 9740 9741 nla_put_failure: 9742 genlmsg_cancel(msg, hdr); 9743 nlmsg_free(msg); 9744 } 9745 9746 void cfg80211_ready_on_channel(struct wireless_dev *wdev, u64 cookie, 9747 struct ieee80211_channel *chan, 9748 unsigned int duration, gfp_t gfp) 9749 { 9750 struct wiphy *wiphy = wdev->wiphy; 9751 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); 9752 9753 trace_cfg80211_ready_on_channel(wdev, cookie, chan, duration); 9754 nl80211_send_remain_on_chan_event(NL80211_CMD_REMAIN_ON_CHANNEL, 9755 rdev, wdev, cookie, chan, 9756 duration, gfp); 9757 } 9758 EXPORT_SYMBOL(cfg80211_ready_on_channel); 9759 9760 void cfg80211_remain_on_channel_expired(struct wireless_dev *wdev, u64 cookie, 9761 struct ieee80211_channel *chan, 9762 gfp_t gfp) 9763 { 9764 struct wiphy *wiphy = wdev->wiphy; 9765 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); 9766 9767 trace_cfg80211_ready_on_channel_expired(wdev, cookie, chan); 9768 nl80211_send_remain_on_chan_event(NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL, 9769 rdev, wdev, cookie, chan, 0, gfp); 9770 } 9771 EXPORT_SYMBOL(cfg80211_remain_on_channel_expired); 9772 9773 void cfg80211_new_sta(struct net_device *dev, const u8 *mac_addr, 9774 struct station_info *sinfo, gfp_t gfp) 9775 { 9776 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy; 9777 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); 9778 struct sk_buff *msg; 9779 9780 trace_cfg80211_new_sta(dev, mac_addr, sinfo); 9781 9782 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 9783 if (!msg) 9784 return; 9785 9786 if (nl80211_send_station(msg, 0, 0, 0, 9787 rdev, dev, mac_addr, sinfo) < 0) { 9788 nlmsg_free(msg); 9789 return; 9790 } 9791 9792 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0, 9793 nl80211_mlme_mcgrp.id, gfp); 9794 } 9795 EXPORT_SYMBOL(cfg80211_new_sta); 9796 9797 void cfg80211_del_sta(struct net_device *dev, const u8 *mac_addr, gfp_t gfp) 9798 { 9799 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy; 9800 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); 9801 struct sk_buff *msg; 9802 void *hdr; 9803 9804 trace_cfg80211_del_sta(dev, mac_addr); 9805 9806 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 9807 if (!msg) 9808 return; 9809 9810 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DEL_STATION); 9811 if (!hdr) { 9812 nlmsg_free(msg); 9813 return; 9814 } 9815 9816 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) || 9817 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr)) 9818 goto nla_put_failure; 9819 9820 genlmsg_end(msg, hdr); 9821 9822 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0, 9823 nl80211_mlme_mcgrp.id, gfp); 9824 return; 9825 9826 nla_put_failure: 9827 genlmsg_cancel(msg, hdr); 9828 nlmsg_free(msg); 9829 } 9830 EXPORT_SYMBOL(cfg80211_del_sta); 9831 9832 void cfg80211_conn_failed(struct net_device *dev, const u8 *mac_addr, 9833 enum nl80211_connect_failed_reason reason, 9834 gfp_t gfp) 9835 { 9836 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy; 9837 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); 9838 struct sk_buff *msg; 9839 void *hdr; 9840 9841 msg = nlmsg_new(NLMSG_GOODSIZE, gfp); 9842 if (!msg) 9843 return; 9844 9845 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONN_FAILED); 9846 if (!hdr) { 9847 nlmsg_free(msg); 9848 return; 9849 } 9850 9851 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) || 9852 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) || 9853 nla_put_u32(msg, NL80211_ATTR_CONN_FAILED_REASON, reason)) 9854 goto nla_put_failure; 9855 9856 genlmsg_end(msg, hdr); 9857 9858 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0, 9859 nl80211_mlme_mcgrp.id, gfp); 9860 return; 9861 9862 nla_put_failure: 9863 genlmsg_cancel(msg, hdr); 9864 nlmsg_free(msg); 9865 } 9866 EXPORT_SYMBOL(cfg80211_conn_failed); 9867 9868 static bool __nl80211_unexpected_frame(struct net_device *dev, u8 cmd, 9869 const u8 *addr, gfp_t gfp) 9870 { 9871 struct wireless_dev *wdev = dev->ieee80211_ptr; 9872 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy); 9873 struct sk_buff *msg; 9874 void *hdr; 9875 int err; 9876 u32 nlportid = ACCESS_ONCE(wdev->ap_unexpected_nlportid); 9877 9878 if (!nlportid) 9879 return false; 9880 9881 msg = nlmsg_new(100, gfp); 9882 if (!msg) 9883 return true; 9884 9885 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd); 9886 if (!hdr) { 9887 nlmsg_free(msg); 9888 return true; 9889 } 9890 9891 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 9892 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) || 9893 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) 9894 goto nla_put_failure; 9895 9896 err = genlmsg_end(msg, hdr); 9897 if (err < 0) { 9898 nlmsg_free(msg); 9899 return true; 9900 } 9901 9902 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid); 9903 return true; 9904 9905 nla_put_failure: 9906 genlmsg_cancel(msg, hdr); 9907 nlmsg_free(msg); 9908 return true; 9909 } 9910 9911 bool cfg80211_rx_spurious_frame(struct net_device *dev, 9912 const u8 *addr, gfp_t gfp) 9913 { 9914 struct wireless_dev *wdev = dev->ieee80211_ptr; 9915 bool ret; 9916 9917 trace_cfg80211_rx_spurious_frame(dev, addr); 9918 9919 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP && 9920 wdev->iftype != NL80211_IFTYPE_P2P_GO)) { 9921 trace_cfg80211_return_bool(false); 9922 return false; 9923 } 9924 ret = __nl80211_unexpected_frame(dev, NL80211_CMD_UNEXPECTED_FRAME, 9925 addr, gfp); 9926 trace_cfg80211_return_bool(ret); 9927 return ret; 9928 } 9929 EXPORT_SYMBOL(cfg80211_rx_spurious_frame); 9930 9931 bool cfg80211_rx_unexpected_4addr_frame(struct net_device *dev, 9932 const u8 *addr, gfp_t gfp) 9933 { 9934 struct wireless_dev *wdev = dev->ieee80211_ptr; 9935 bool ret; 9936 9937 trace_cfg80211_rx_unexpected_4addr_frame(dev, addr); 9938 9939 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP && 9940 wdev->iftype != NL80211_IFTYPE_P2P_GO && 9941 wdev->iftype != NL80211_IFTYPE_AP_VLAN)) { 9942 trace_cfg80211_return_bool(false); 9943 return false; 9944 } 9945 ret = __nl80211_unexpected_frame(dev, 9946 NL80211_CMD_UNEXPECTED_4ADDR_FRAME, 9947 addr, gfp); 9948 trace_cfg80211_return_bool(ret); 9949 return ret; 9950 } 9951 EXPORT_SYMBOL(cfg80211_rx_unexpected_4addr_frame); 9952 9953 int nl80211_send_mgmt(struct cfg80211_registered_device *rdev, 9954 struct wireless_dev *wdev, u32 nlportid, 9955 int freq, int sig_dbm, 9956 const u8 *buf, size_t len, gfp_t gfp) 9957 { 9958 struct net_device *netdev = wdev->netdev; 9959 struct sk_buff *msg; 9960 void *hdr; 9961 9962 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 9963 if (!msg) 9964 return -ENOMEM; 9965 9966 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME); 9967 if (!hdr) { 9968 nlmsg_free(msg); 9969 return -ENOMEM; 9970 } 9971 9972 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 9973 (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX, 9974 netdev->ifindex)) || 9975 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) || 9976 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq) || 9977 (sig_dbm && 9978 nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) || 9979 nla_put(msg, NL80211_ATTR_FRAME, len, buf)) 9980 goto nla_put_failure; 9981 9982 genlmsg_end(msg, hdr); 9983 9984 return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid); 9985 9986 nla_put_failure: 9987 genlmsg_cancel(msg, hdr); 9988 nlmsg_free(msg); 9989 return -ENOBUFS; 9990 } 9991 9992 void cfg80211_mgmt_tx_status(struct wireless_dev *wdev, u64 cookie, 9993 const u8 *buf, size_t len, bool ack, gfp_t gfp) 9994 { 9995 struct wiphy *wiphy = wdev->wiphy; 9996 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); 9997 struct net_device *netdev = wdev->netdev; 9998 struct sk_buff *msg; 9999 void *hdr; 10000 10001 trace_cfg80211_mgmt_tx_status(wdev, cookie, ack); 10002 10003 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 10004 if (!msg) 10005 return; 10006 10007 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME_TX_STATUS); 10008 if (!hdr) { 10009 nlmsg_free(msg); 10010 return; 10011 } 10012 10013 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 10014 (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX, 10015 netdev->ifindex)) || 10016 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) || 10017 nla_put(msg, NL80211_ATTR_FRAME, len, buf) || 10018 nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie) || 10019 (ack && nla_put_flag(msg, NL80211_ATTR_ACK))) 10020 goto nla_put_failure; 10021 10022 genlmsg_end(msg, hdr); 10023 10024 genlmsg_multicast(msg, 0, nl80211_mlme_mcgrp.id, gfp); 10025 return; 10026 10027 nla_put_failure: 10028 genlmsg_cancel(msg, hdr); 10029 nlmsg_free(msg); 10030 } 10031 EXPORT_SYMBOL(cfg80211_mgmt_tx_status); 10032 10033 void cfg80211_cqm_rssi_notify(struct net_device *dev, 10034 enum nl80211_cqm_rssi_threshold_event rssi_event, 10035 gfp_t gfp) 10036 { 10037 struct wireless_dev *wdev = dev->ieee80211_ptr; 10038 struct wiphy *wiphy = wdev->wiphy; 10039 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); 10040 struct sk_buff *msg; 10041 struct nlattr *pinfoattr; 10042 void *hdr; 10043 10044 trace_cfg80211_cqm_rssi_notify(dev, rssi_event); 10045 10046 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 10047 if (!msg) 10048 return; 10049 10050 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM); 10051 if (!hdr) { 10052 nlmsg_free(msg); 10053 return; 10054 } 10055 10056 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 10057 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex)) 10058 goto nla_put_failure; 10059 10060 pinfoattr = nla_nest_start(msg, NL80211_ATTR_CQM); 10061 if (!pinfoattr) 10062 goto nla_put_failure; 10063 10064 if (nla_put_u32(msg, NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT, 10065 rssi_event)) 10066 goto nla_put_failure; 10067 10068 nla_nest_end(msg, pinfoattr); 10069 10070 genlmsg_end(msg, hdr); 10071 10072 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0, 10073 nl80211_mlme_mcgrp.id, gfp); 10074 return; 10075 10076 nla_put_failure: 10077 genlmsg_cancel(msg, hdr); 10078 nlmsg_free(msg); 10079 } 10080 EXPORT_SYMBOL(cfg80211_cqm_rssi_notify); 10081 10082 static void nl80211_gtk_rekey_notify(struct cfg80211_registered_device *rdev, 10083 struct net_device *netdev, const u8 *bssid, 10084 const u8 *replay_ctr, gfp_t gfp) 10085 { 10086 struct sk_buff *msg; 10087 struct nlattr *rekey_attr; 10088 void *hdr; 10089 10090 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 10091 if (!msg) 10092 return; 10093 10094 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_REKEY_OFFLOAD); 10095 if (!hdr) { 10096 nlmsg_free(msg); 10097 return; 10098 } 10099 10100 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 10101 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) || 10102 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid)) 10103 goto nla_put_failure; 10104 10105 rekey_attr = nla_nest_start(msg, NL80211_ATTR_REKEY_DATA); 10106 if (!rekey_attr) 10107 goto nla_put_failure; 10108 10109 if (nla_put(msg, NL80211_REKEY_DATA_REPLAY_CTR, 10110 NL80211_REPLAY_CTR_LEN, replay_ctr)) 10111 goto nla_put_failure; 10112 10113 nla_nest_end(msg, rekey_attr); 10114 10115 genlmsg_end(msg, hdr); 10116 10117 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0, 10118 nl80211_mlme_mcgrp.id, gfp); 10119 return; 10120 10121 nla_put_failure: 10122 genlmsg_cancel(msg, hdr); 10123 nlmsg_free(msg); 10124 } 10125 10126 void cfg80211_gtk_rekey_notify(struct net_device *dev, const u8 *bssid, 10127 const u8 *replay_ctr, gfp_t gfp) 10128 { 10129 struct wireless_dev *wdev = dev->ieee80211_ptr; 10130 struct wiphy *wiphy = wdev->wiphy; 10131 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); 10132 10133 trace_cfg80211_gtk_rekey_notify(dev, bssid); 10134 nl80211_gtk_rekey_notify(rdev, dev, bssid, replay_ctr, gfp); 10135 } 10136 EXPORT_SYMBOL(cfg80211_gtk_rekey_notify); 10137 10138 static void 10139 nl80211_pmksa_candidate_notify(struct cfg80211_registered_device *rdev, 10140 struct net_device *netdev, int index, 10141 const u8 *bssid, bool preauth, gfp_t gfp) 10142 { 10143 struct sk_buff *msg; 10144 struct nlattr *attr; 10145 void *hdr; 10146 10147 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 10148 if (!msg) 10149 return; 10150 10151 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PMKSA_CANDIDATE); 10152 if (!hdr) { 10153 nlmsg_free(msg); 10154 return; 10155 } 10156 10157 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 10158 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex)) 10159 goto nla_put_failure; 10160 10161 attr = nla_nest_start(msg, NL80211_ATTR_PMKSA_CANDIDATE); 10162 if (!attr) 10163 goto nla_put_failure; 10164 10165 if (nla_put_u32(msg, NL80211_PMKSA_CANDIDATE_INDEX, index) || 10166 nla_put(msg, NL80211_PMKSA_CANDIDATE_BSSID, ETH_ALEN, bssid) || 10167 (preauth && 10168 nla_put_flag(msg, NL80211_PMKSA_CANDIDATE_PREAUTH))) 10169 goto nla_put_failure; 10170 10171 nla_nest_end(msg, attr); 10172 10173 genlmsg_end(msg, hdr); 10174 10175 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0, 10176 nl80211_mlme_mcgrp.id, gfp); 10177 return; 10178 10179 nla_put_failure: 10180 genlmsg_cancel(msg, hdr); 10181 nlmsg_free(msg); 10182 } 10183 10184 void cfg80211_pmksa_candidate_notify(struct net_device *dev, int index, 10185 const u8 *bssid, bool preauth, gfp_t gfp) 10186 { 10187 struct wireless_dev *wdev = dev->ieee80211_ptr; 10188 struct wiphy *wiphy = wdev->wiphy; 10189 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); 10190 10191 trace_cfg80211_pmksa_candidate_notify(dev, index, bssid, preauth); 10192 nl80211_pmksa_candidate_notify(rdev, dev, index, bssid, preauth, gfp); 10193 } 10194 EXPORT_SYMBOL(cfg80211_pmksa_candidate_notify); 10195 10196 static void nl80211_ch_switch_notify(struct cfg80211_registered_device *rdev, 10197 struct net_device *netdev, 10198 struct cfg80211_chan_def *chandef, 10199 gfp_t gfp) 10200 { 10201 struct sk_buff *msg; 10202 void *hdr; 10203 10204 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 10205 if (!msg) 10206 return; 10207 10208 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CH_SWITCH_NOTIFY); 10209 if (!hdr) { 10210 nlmsg_free(msg); 10211 return; 10212 } 10213 10214 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex)) 10215 goto nla_put_failure; 10216 10217 if (nl80211_send_chandef(msg, chandef)) 10218 goto nla_put_failure; 10219 10220 genlmsg_end(msg, hdr); 10221 10222 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0, 10223 nl80211_mlme_mcgrp.id, gfp); 10224 return; 10225 10226 nla_put_failure: 10227 genlmsg_cancel(msg, hdr); 10228 nlmsg_free(msg); 10229 } 10230 10231 void cfg80211_ch_switch_notify(struct net_device *dev, 10232 struct cfg80211_chan_def *chandef) 10233 { 10234 struct wireless_dev *wdev = dev->ieee80211_ptr; 10235 struct wiphy *wiphy = wdev->wiphy; 10236 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); 10237 10238 trace_cfg80211_ch_switch_notify(dev, chandef); 10239 10240 wdev_lock(wdev); 10241 10242 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP && 10243 wdev->iftype != NL80211_IFTYPE_P2P_GO)) 10244 goto out; 10245 10246 wdev->channel = chandef->chan; 10247 nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL); 10248 out: 10249 wdev_unlock(wdev); 10250 return; 10251 } 10252 EXPORT_SYMBOL(cfg80211_ch_switch_notify); 10253 10254 void cfg80211_cqm_txe_notify(struct net_device *dev, 10255 const u8 *peer, u32 num_packets, 10256 u32 rate, u32 intvl, gfp_t gfp) 10257 { 10258 struct wireless_dev *wdev = dev->ieee80211_ptr; 10259 struct wiphy *wiphy = wdev->wiphy; 10260 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); 10261 struct sk_buff *msg; 10262 struct nlattr *pinfoattr; 10263 void *hdr; 10264 10265 msg = nlmsg_new(NLMSG_GOODSIZE, gfp); 10266 if (!msg) 10267 return; 10268 10269 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM); 10270 if (!hdr) { 10271 nlmsg_free(msg); 10272 return; 10273 } 10274 10275 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 10276 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) || 10277 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer)) 10278 goto nla_put_failure; 10279 10280 pinfoattr = nla_nest_start(msg, NL80211_ATTR_CQM); 10281 if (!pinfoattr) 10282 goto nla_put_failure; 10283 10284 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_PKTS, num_packets)) 10285 goto nla_put_failure; 10286 10287 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_RATE, rate)) 10288 goto nla_put_failure; 10289 10290 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_INTVL, intvl)) 10291 goto nla_put_failure; 10292 10293 nla_nest_end(msg, pinfoattr); 10294 10295 genlmsg_end(msg, hdr); 10296 10297 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0, 10298 nl80211_mlme_mcgrp.id, gfp); 10299 return; 10300 10301 nla_put_failure: 10302 genlmsg_cancel(msg, hdr); 10303 nlmsg_free(msg); 10304 } 10305 EXPORT_SYMBOL(cfg80211_cqm_txe_notify); 10306 10307 void 10308 nl80211_radar_notify(struct cfg80211_registered_device *rdev, 10309 struct cfg80211_chan_def *chandef, 10310 enum nl80211_radar_event event, 10311 struct net_device *netdev, gfp_t gfp) 10312 { 10313 struct sk_buff *msg; 10314 void *hdr; 10315 10316 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 10317 if (!msg) 10318 return; 10319 10320 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_RADAR_DETECT); 10321 if (!hdr) { 10322 nlmsg_free(msg); 10323 return; 10324 } 10325 10326 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx)) 10327 goto nla_put_failure; 10328 10329 /* NOP and radar events don't need a netdev parameter */ 10330 if (netdev) { 10331 struct wireless_dev *wdev = netdev->ieee80211_ptr; 10332 10333 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) || 10334 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev))) 10335 goto nla_put_failure; 10336 } 10337 10338 if (nla_put_u32(msg, NL80211_ATTR_RADAR_EVENT, event)) 10339 goto nla_put_failure; 10340 10341 if (nl80211_send_chandef(msg, chandef)) 10342 goto nla_put_failure; 10343 10344 if (genlmsg_end(msg, hdr) < 0) { 10345 nlmsg_free(msg); 10346 return; 10347 } 10348 10349 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0, 10350 nl80211_mlme_mcgrp.id, gfp); 10351 return; 10352 10353 nla_put_failure: 10354 genlmsg_cancel(msg, hdr); 10355 nlmsg_free(msg); 10356 } 10357 10358 void cfg80211_cqm_pktloss_notify(struct net_device *dev, 10359 const u8 *peer, u32 num_packets, gfp_t gfp) 10360 { 10361 struct wireless_dev *wdev = dev->ieee80211_ptr; 10362 struct wiphy *wiphy = wdev->wiphy; 10363 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); 10364 struct sk_buff *msg; 10365 struct nlattr *pinfoattr; 10366 void *hdr; 10367 10368 trace_cfg80211_cqm_pktloss_notify(dev, peer, num_packets); 10369 10370 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 10371 if (!msg) 10372 return; 10373 10374 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM); 10375 if (!hdr) { 10376 nlmsg_free(msg); 10377 return; 10378 } 10379 10380 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 10381 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) || 10382 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer)) 10383 goto nla_put_failure; 10384 10385 pinfoattr = nla_nest_start(msg, NL80211_ATTR_CQM); 10386 if (!pinfoattr) 10387 goto nla_put_failure; 10388 10389 if (nla_put_u32(msg, NL80211_ATTR_CQM_PKT_LOSS_EVENT, num_packets)) 10390 goto nla_put_failure; 10391 10392 nla_nest_end(msg, pinfoattr); 10393 10394 genlmsg_end(msg, hdr); 10395 10396 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0, 10397 nl80211_mlme_mcgrp.id, gfp); 10398 return; 10399 10400 nla_put_failure: 10401 genlmsg_cancel(msg, hdr); 10402 nlmsg_free(msg); 10403 } 10404 EXPORT_SYMBOL(cfg80211_cqm_pktloss_notify); 10405 10406 void cfg80211_probe_status(struct net_device *dev, const u8 *addr, 10407 u64 cookie, bool acked, gfp_t gfp) 10408 { 10409 struct wireless_dev *wdev = dev->ieee80211_ptr; 10410 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy); 10411 struct sk_buff *msg; 10412 void *hdr; 10413 int err; 10414 10415 trace_cfg80211_probe_status(dev, addr, cookie, acked); 10416 10417 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 10418 10419 if (!msg) 10420 return; 10421 10422 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PROBE_CLIENT); 10423 if (!hdr) { 10424 nlmsg_free(msg); 10425 return; 10426 } 10427 10428 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 10429 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) || 10430 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) || 10431 nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie) || 10432 (acked && nla_put_flag(msg, NL80211_ATTR_ACK))) 10433 goto nla_put_failure; 10434 10435 err = genlmsg_end(msg, hdr); 10436 if (err < 0) { 10437 nlmsg_free(msg); 10438 return; 10439 } 10440 10441 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0, 10442 nl80211_mlme_mcgrp.id, gfp); 10443 return; 10444 10445 nla_put_failure: 10446 genlmsg_cancel(msg, hdr); 10447 nlmsg_free(msg); 10448 } 10449 EXPORT_SYMBOL(cfg80211_probe_status); 10450 10451 void cfg80211_report_obss_beacon(struct wiphy *wiphy, 10452 const u8 *frame, size_t len, 10453 int freq, int sig_dbm) 10454 { 10455 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); 10456 struct sk_buff *msg; 10457 void *hdr; 10458 struct cfg80211_beacon_registration *reg; 10459 10460 trace_cfg80211_report_obss_beacon(wiphy, frame, len, freq, sig_dbm); 10461 10462 spin_lock_bh(&rdev->beacon_registrations_lock); 10463 list_for_each_entry(reg, &rdev->beacon_registrations, list) { 10464 msg = nlmsg_new(len + 100, GFP_ATOMIC); 10465 if (!msg) { 10466 spin_unlock_bh(&rdev->beacon_registrations_lock); 10467 return; 10468 } 10469 10470 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME); 10471 if (!hdr) 10472 goto nla_put_failure; 10473 10474 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 10475 (freq && 10476 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq)) || 10477 (sig_dbm && 10478 nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) || 10479 nla_put(msg, NL80211_ATTR_FRAME, len, frame)) 10480 goto nla_put_failure; 10481 10482 genlmsg_end(msg, hdr); 10483 10484 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, reg->nlportid); 10485 } 10486 spin_unlock_bh(&rdev->beacon_registrations_lock); 10487 return; 10488 10489 nla_put_failure: 10490 spin_unlock_bh(&rdev->beacon_registrations_lock); 10491 if (hdr) 10492 genlmsg_cancel(msg, hdr); 10493 nlmsg_free(msg); 10494 } 10495 EXPORT_SYMBOL(cfg80211_report_obss_beacon); 10496 10497 #ifdef CONFIG_PM 10498 void cfg80211_report_wowlan_wakeup(struct wireless_dev *wdev, 10499 struct cfg80211_wowlan_wakeup *wakeup, 10500 gfp_t gfp) 10501 { 10502 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy); 10503 struct sk_buff *msg; 10504 void *hdr; 10505 int err, size = 200; 10506 10507 trace_cfg80211_report_wowlan_wakeup(wdev->wiphy, wdev, wakeup); 10508 10509 if (wakeup) 10510 size += wakeup->packet_present_len; 10511 10512 msg = nlmsg_new(size, gfp); 10513 if (!msg) 10514 return; 10515 10516 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_WOWLAN); 10517 if (!hdr) 10518 goto free_msg; 10519 10520 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 10521 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev))) 10522 goto free_msg; 10523 10524 if (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX, 10525 wdev->netdev->ifindex)) 10526 goto free_msg; 10527 10528 if (wakeup) { 10529 struct nlattr *reasons; 10530 10531 reasons = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS); 10532 10533 if (wakeup->disconnect && 10534 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) 10535 goto free_msg; 10536 if (wakeup->magic_pkt && 10537 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) 10538 goto free_msg; 10539 if (wakeup->gtk_rekey_failure && 10540 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) 10541 goto free_msg; 10542 if (wakeup->eap_identity_req && 10543 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) 10544 goto free_msg; 10545 if (wakeup->four_way_handshake && 10546 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) 10547 goto free_msg; 10548 if (wakeup->rfkill_release && 10549 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)) 10550 goto free_msg; 10551 10552 if (wakeup->pattern_idx >= 0 && 10553 nla_put_u32(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN, 10554 wakeup->pattern_idx)) 10555 goto free_msg; 10556 10557 if (wakeup->tcp_match) 10558 nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_MATCH); 10559 10560 if (wakeup->tcp_connlost) 10561 nla_put_flag(msg, 10562 NL80211_WOWLAN_TRIG_WAKEUP_TCP_CONNLOST); 10563 10564 if (wakeup->tcp_nomoretokens) 10565 nla_put_flag(msg, 10566 NL80211_WOWLAN_TRIG_WAKEUP_TCP_NOMORETOKENS); 10567 10568 if (wakeup->packet) { 10569 u32 pkt_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211; 10570 u32 len_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211_LEN; 10571 10572 if (!wakeup->packet_80211) { 10573 pkt_attr = 10574 NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023; 10575 len_attr = 10576 NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023_LEN; 10577 } 10578 10579 if (wakeup->packet_len && 10580 nla_put_u32(msg, len_attr, wakeup->packet_len)) 10581 goto free_msg; 10582 10583 if (nla_put(msg, pkt_attr, wakeup->packet_present_len, 10584 wakeup->packet)) 10585 goto free_msg; 10586 } 10587 10588 nla_nest_end(msg, reasons); 10589 } 10590 10591 err = genlmsg_end(msg, hdr); 10592 if (err < 0) 10593 goto free_msg; 10594 10595 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0, 10596 nl80211_mlme_mcgrp.id, gfp); 10597 return; 10598 10599 free_msg: 10600 nlmsg_free(msg); 10601 } 10602 EXPORT_SYMBOL(cfg80211_report_wowlan_wakeup); 10603 #endif 10604 10605 void cfg80211_tdls_oper_request(struct net_device *dev, const u8 *peer, 10606 enum nl80211_tdls_operation oper, 10607 u16 reason_code, gfp_t gfp) 10608 { 10609 struct wireless_dev *wdev = dev->ieee80211_ptr; 10610 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy); 10611 struct sk_buff *msg; 10612 void *hdr; 10613 int err; 10614 10615 trace_cfg80211_tdls_oper_request(wdev->wiphy, dev, peer, oper, 10616 reason_code); 10617 10618 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 10619 if (!msg) 10620 return; 10621 10622 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_TDLS_OPER); 10623 if (!hdr) { 10624 nlmsg_free(msg); 10625 return; 10626 } 10627 10628 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 10629 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) || 10630 nla_put_u8(msg, NL80211_ATTR_TDLS_OPERATION, oper) || 10631 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer) || 10632 (reason_code > 0 && 10633 nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason_code))) 10634 goto nla_put_failure; 10635 10636 err = genlmsg_end(msg, hdr); 10637 if (err < 0) { 10638 nlmsg_free(msg); 10639 return; 10640 } 10641 10642 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0, 10643 nl80211_mlme_mcgrp.id, gfp); 10644 return; 10645 10646 nla_put_failure: 10647 genlmsg_cancel(msg, hdr); 10648 nlmsg_free(msg); 10649 } 10650 EXPORT_SYMBOL(cfg80211_tdls_oper_request); 10651 10652 static int nl80211_netlink_notify(struct notifier_block * nb, 10653 unsigned long state, 10654 void *_notify) 10655 { 10656 struct netlink_notify *notify = _notify; 10657 struct cfg80211_registered_device *rdev; 10658 struct wireless_dev *wdev; 10659 struct cfg80211_beacon_registration *reg, *tmp; 10660 10661 if (state != NETLINK_URELEASE) 10662 return NOTIFY_DONE; 10663 10664 rcu_read_lock(); 10665 10666 list_for_each_entry_rcu(rdev, &cfg80211_rdev_list, list) { 10667 list_for_each_entry_rcu(wdev, &rdev->wdev_list, list) 10668 cfg80211_mlme_unregister_socket(wdev, notify->portid); 10669 10670 spin_lock_bh(&rdev->beacon_registrations_lock); 10671 list_for_each_entry_safe(reg, tmp, &rdev->beacon_registrations, 10672 list) { 10673 if (reg->nlportid == notify->portid) { 10674 list_del(®->list); 10675 kfree(reg); 10676 break; 10677 } 10678 } 10679 spin_unlock_bh(&rdev->beacon_registrations_lock); 10680 } 10681 10682 rcu_read_unlock(); 10683 10684 return NOTIFY_DONE; 10685 } 10686 10687 static struct notifier_block nl80211_netlink_notifier = { 10688 .notifier_call = nl80211_netlink_notify, 10689 }; 10690 10691 void cfg80211_ft_event(struct net_device *netdev, 10692 struct cfg80211_ft_event_params *ft_event) 10693 { 10694 struct wiphy *wiphy = netdev->ieee80211_ptr->wiphy; 10695 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); 10696 struct sk_buff *msg; 10697 void *hdr; 10698 int err; 10699 10700 trace_cfg80211_ft_event(wiphy, netdev, ft_event); 10701 10702 if (!ft_event->target_ap) 10703 return; 10704 10705 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 10706 if (!msg) 10707 return; 10708 10709 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FT_EVENT); 10710 if (!hdr) { 10711 nlmsg_free(msg); 10712 return; 10713 } 10714 10715 nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx); 10716 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex); 10717 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, ft_event->target_ap); 10718 if (ft_event->ies) 10719 nla_put(msg, NL80211_ATTR_IE, ft_event->ies_len, ft_event->ies); 10720 if (ft_event->ric_ies) 10721 nla_put(msg, NL80211_ATTR_IE_RIC, ft_event->ric_ies_len, 10722 ft_event->ric_ies); 10723 10724 err = genlmsg_end(msg, hdr); 10725 if (err < 0) { 10726 nlmsg_free(msg); 10727 return; 10728 } 10729 10730 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0, 10731 nl80211_mlme_mcgrp.id, GFP_KERNEL); 10732 } 10733 EXPORT_SYMBOL(cfg80211_ft_event); 10734 10735 void cfg80211_crit_proto_stopped(struct wireless_dev *wdev, gfp_t gfp) 10736 { 10737 struct cfg80211_registered_device *rdev; 10738 struct sk_buff *msg; 10739 void *hdr; 10740 u32 nlportid; 10741 10742 rdev = wiphy_to_dev(wdev->wiphy); 10743 if (!rdev->crit_proto_nlportid) 10744 return; 10745 10746 nlportid = rdev->crit_proto_nlportid; 10747 rdev->crit_proto_nlportid = 0; 10748 10749 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 10750 if (!msg) 10751 return; 10752 10753 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CRIT_PROTOCOL_STOP); 10754 if (!hdr) 10755 goto nla_put_failure; 10756 10757 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 10758 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev))) 10759 goto nla_put_failure; 10760 10761 genlmsg_end(msg, hdr); 10762 10763 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid); 10764 return; 10765 10766 nla_put_failure: 10767 if (hdr) 10768 genlmsg_cancel(msg, hdr); 10769 nlmsg_free(msg); 10770 10771 } 10772 EXPORT_SYMBOL(cfg80211_crit_proto_stopped); 10773 10774 /* initialisation/exit functions */ 10775 10776 int nl80211_init(void) 10777 { 10778 int err; 10779 10780 err = genl_register_family_with_ops(&nl80211_fam, 10781 nl80211_ops, ARRAY_SIZE(nl80211_ops)); 10782 if (err) 10783 return err; 10784 10785 err = genl_register_mc_group(&nl80211_fam, &nl80211_config_mcgrp); 10786 if (err) 10787 goto err_out; 10788 10789 err = genl_register_mc_group(&nl80211_fam, &nl80211_scan_mcgrp); 10790 if (err) 10791 goto err_out; 10792 10793 err = genl_register_mc_group(&nl80211_fam, &nl80211_regulatory_mcgrp); 10794 if (err) 10795 goto err_out; 10796 10797 err = genl_register_mc_group(&nl80211_fam, &nl80211_mlme_mcgrp); 10798 if (err) 10799 goto err_out; 10800 10801 #ifdef CONFIG_NL80211_TESTMODE 10802 err = genl_register_mc_group(&nl80211_fam, &nl80211_testmode_mcgrp); 10803 if (err) 10804 goto err_out; 10805 #endif 10806 10807 err = netlink_register_notifier(&nl80211_netlink_notifier); 10808 if (err) 10809 goto err_out; 10810 10811 return 0; 10812 err_out: 10813 genl_unregister_family(&nl80211_fam); 10814 return err; 10815 } 10816 10817 void nl80211_exit(void) 10818 { 10819 netlink_unregister_notifier(&nl80211_netlink_notifier); 10820 genl_unregister_family(&nl80211_fam); 10821 } 10822