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_GENL_NAME, /* 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_RTNL(); 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 list_for_each_entry(wdev, &rdev->wdev_list, list) { 84 if (have_ifidx && wdev->netdev && 85 wdev->netdev->ifindex == ifidx) { 86 result = wdev; 87 break; 88 } 89 if (have_wdev_id && wdev->identifier == (u32)wdev_id) { 90 result = wdev; 91 break; 92 } 93 } 94 95 if (result) 96 break; 97 } 98 99 if (result) 100 return result; 101 return ERR_PTR(-ENODEV); 102 } 103 104 static struct cfg80211_registered_device * 105 __cfg80211_rdev_from_attrs(struct net *netns, struct nlattr **attrs) 106 { 107 struct cfg80211_registered_device *rdev = NULL, *tmp; 108 struct net_device *netdev; 109 110 ASSERT_RTNL(); 111 112 if (!attrs[NL80211_ATTR_WIPHY] && 113 !attrs[NL80211_ATTR_IFINDEX] && 114 !attrs[NL80211_ATTR_WDEV]) 115 return ERR_PTR(-EINVAL); 116 117 if (attrs[NL80211_ATTR_WIPHY]) 118 rdev = cfg80211_rdev_by_wiphy_idx( 119 nla_get_u32(attrs[NL80211_ATTR_WIPHY])); 120 121 if (attrs[NL80211_ATTR_WDEV]) { 122 u64 wdev_id = nla_get_u64(attrs[NL80211_ATTR_WDEV]); 123 struct wireless_dev *wdev; 124 bool found = false; 125 126 tmp = cfg80211_rdev_by_wiphy_idx(wdev_id >> 32); 127 if (tmp) { 128 /* make sure wdev exists */ 129 list_for_each_entry(wdev, &tmp->wdev_list, list) { 130 if (wdev->identifier != (u32)wdev_id) 131 continue; 132 found = true; 133 break; 134 } 135 136 if (!found) 137 tmp = NULL; 138 139 if (rdev && tmp != rdev) 140 return ERR_PTR(-EINVAL); 141 rdev = tmp; 142 } 143 } 144 145 if (attrs[NL80211_ATTR_IFINDEX]) { 146 int ifindex = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]); 147 netdev = dev_get_by_index(netns, ifindex); 148 if (netdev) { 149 if (netdev->ieee80211_ptr) 150 tmp = wiphy_to_dev( 151 netdev->ieee80211_ptr->wiphy); 152 else 153 tmp = NULL; 154 155 dev_put(netdev); 156 157 /* not wireless device -- return error */ 158 if (!tmp) 159 return ERR_PTR(-EINVAL); 160 161 /* mismatch -- return error */ 162 if (rdev && tmp != rdev) 163 return ERR_PTR(-EINVAL); 164 165 rdev = tmp; 166 } 167 } 168 169 if (!rdev) 170 return ERR_PTR(-ENODEV); 171 172 if (netns != wiphy_net(&rdev->wiphy)) 173 return ERR_PTR(-ENODEV); 174 175 return rdev; 176 } 177 178 /* 179 * This function returns a pointer to the driver 180 * that the genl_info item that is passed refers to. 181 * 182 * The result of this can be a PTR_ERR and hence must 183 * be checked with IS_ERR() for errors. 184 */ 185 static struct cfg80211_registered_device * 186 cfg80211_get_dev_from_info(struct net *netns, struct genl_info *info) 187 { 188 return __cfg80211_rdev_from_attrs(netns, info->attrs); 189 } 190 191 /* policy for the attributes */ 192 static const struct nla_policy nl80211_policy[NL80211_ATTR_MAX+1] = { 193 [NL80211_ATTR_WIPHY] = { .type = NLA_U32 }, 194 [NL80211_ATTR_WIPHY_NAME] = { .type = NLA_NUL_STRING, 195 .len = 20-1 }, 196 [NL80211_ATTR_WIPHY_TXQ_PARAMS] = { .type = NLA_NESTED }, 197 198 [NL80211_ATTR_WIPHY_FREQ] = { .type = NLA_U32 }, 199 [NL80211_ATTR_WIPHY_CHANNEL_TYPE] = { .type = NLA_U32 }, 200 [NL80211_ATTR_CHANNEL_WIDTH] = { .type = NLA_U32 }, 201 [NL80211_ATTR_CENTER_FREQ1] = { .type = NLA_U32 }, 202 [NL80211_ATTR_CENTER_FREQ2] = { .type = NLA_U32 }, 203 204 [NL80211_ATTR_WIPHY_RETRY_SHORT] = { .type = NLA_U8 }, 205 [NL80211_ATTR_WIPHY_RETRY_LONG] = { .type = NLA_U8 }, 206 [NL80211_ATTR_WIPHY_FRAG_THRESHOLD] = { .type = NLA_U32 }, 207 [NL80211_ATTR_WIPHY_RTS_THRESHOLD] = { .type = NLA_U32 }, 208 [NL80211_ATTR_WIPHY_COVERAGE_CLASS] = { .type = NLA_U8 }, 209 210 [NL80211_ATTR_IFTYPE] = { .type = NLA_U32 }, 211 [NL80211_ATTR_IFINDEX] = { .type = NLA_U32 }, 212 [NL80211_ATTR_IFNAME] = { .type = NLA_NUL_STRING, .len = IFNAMSIZ-1 }, 213 214 [NL80211_ATTR_MAC] = { .len = ETH_ALEN }, 215 [NL80211_ATTR_PREV_BSSID] = { .len = ETH_ALEN }, 216 217 [NL80211_ATTR_KEY] = { .type = NLA_NESTED, }, 218 [NL80211_ATTR_KEY_DATA] = { .type = NLA_BINARY, 219 .len = WLAN_MAX_KEY_LEN }, 220 [NL80211_ATTR_KEY_IDX] = { .type = NLA_U8 }, 221 [NL80211_ATTR_KEY_CIPHER] = { .type = NLA_U32 }, 222 [NL80211_ATTR_KEY_DEFAULT] = { .type = NLA_FLAG }, 223 [NL80211_ATTR_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 }, 224 [NL80211_ATTR_KEY_TYPE] = { .type = NLA_U32 }, 225 226 [NL80211_ATTR_BEACON_INTERVAL] = { .type = NLA_U32 }, 227 [NL80211_ATTR_DTIM_PERIOD] = { .type = NLA_U32 }, 228 [NL80211_ATTR_BEACON_HEAD] = { .type = NLA_BINARY, 229 .len = IEEE80211_MAX_DATA_LEN }, 230 [NL80211_ATTR_BEACON_TAIL] = { .type = NLA_BINARY, 231 .len = IEEE80211_MAX_DATA_LEN }, 232 [NL80211_ATTR_STA_AID] = { .type = NLA_U16 }, 233 [NL80211_ATTR_STA_FLAGS] = { .type = NLA_NESTED }, 234 [NL80211_ATTR_STA_LISTEN_INTERVAL] = { .type = NLA_U16 }, 235 [NL80211_ATTR_STA_SUPPORTED_RATES] = { .type = NLA_BINARY, 236 .len = NL80211_MAX_SUPP_RATES }, 237 [NL80211_ATTR_STA_PLINK_ACTION] = { .type = NLA_U8 }, 238 [NL80211_ATTR_STA_VLAN] = { .type = NLA_U32 }, 239 [NL80211_ATTR_MNTR_FLAGS] = { /* NLA_NESTED can't be empty */ }, 240 [NL80211_ATTR_MESH_ID] = { .type = NLA_BINARY, 241 .len = IEEE80211_MAX_MESH_ID_LEN }, 242 [NL80211_ATTR_MPATH_NEXT_HOP] = { .type = NLA_U32 }, 243 244 [NL80211_ATTR_REG_ALPHA2] = { .type = NLA_STRING, .len = 2 }, 245 [NL80211_ATTR_REG_RULES] = { .type = NLA_NESTED }, 246 247 [NL80211_ATTR_BSS_CTS_PROT] = { .type = NLA_U8 }, 248 [NL80211_ATTR_BSS_SHORT_PREAMBLE] = { .type = NLA_U8 }, 249 [NL80211_ATTR_BSS_SHORT_SLOT_TIME] = { .type = NLA_U8 }, 250 [NL80211_ATTR_BSS_BASIC_RATES] = { .type = NLA_BINARY, 251 .len = NL80211_MAX_SUPP_RATES }, 252 [NL80211_ATTR_BSS_HT_OPMODE] = { .type = NLA_U16 }, 253 254 [NL80211_ATTR_MESH_CONFIG] = { .type = NLA_NESTED }, 255 [NL80211_ATTR_SUPPORT_MESH_AUTH] = { .type = NLA_FLAG }, 256 257 [NL80211_ATTR_HT_CAPABILITY] = { .len = NL80211_HT_CAPABILITY_LEN }, 258 259 [NL80211_ATTR_MGMT_SUBTYPE] = { .type = NLA_U8 }, 260 [NL80211_ATTR_IE] = { .type = NLA_BINARY, 261 .len = IEEE80211_MAX_DATA_LEN }, 262 [NL80211_ATTR_SCAN_FREQUENCIES] = { .type = NLA_NESTED }, 263 [NL80211_ATTR_SCAN_SSIDS] = { .type = NLA_NESTED }, 264 265 [NL80211_ATTR_SSID] = { .type = NLA_BINARY, 266 .len = IEEE80211_MAX_SSID_LEN }, 267 [NL80211_ATTR_AUTH_TYPE] = { .type = NLA_U32 }, 268 [NL80211_ATTR_REASON_CODE] = { .type = NLA_U16 }, 269 [NL80211_ATTR_FREQ_FIXED] = { .type = NLA_FLAG }, 270 [NL80211_ATTR_TIMED_OUT] = { .type = NLA_FLAG }, 271 [NL80211_ATTR_USE_MFP] = { .type = NLA_U32 }, 272 [NL80211_ATTR_STA_FLAGS2] = { 273 .len = sizeof(struct nl80211_sta_flag_update), 274 }, 275 [NL80211_ATTR_CONTROL_PORT] = { .type = NLA_FLAG }, 276 [NL80211_ATTR_CONTROL_PORT_ETHERTYPE] = { .type = NLA_U16 }, 277 [NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT] = { .type = NLA_FLAG }, 278 [NL80211_ATTR_PRIVACY] = { .type = NLA_FLAG }, 279 [NL80211_ATTR_CIPHER_SUITE_GROUP] = { .type = NLA_U32 }, 280 [NL80211_ATTR_WPA_VERSIONS] = { .type = NLA_U32 }, 281 [NL80211_ATTR_PID] = { .type = NLA_U32 }, 282 [NL80211_ATTR_4ADDR] = { .type = NLA_U8 }, 283 [NL80211_ATTR_PMKID] = { .type = NLA_BINARY, 284 .len = WLAN_PMKID_LEN }, 285 [NL80211_ATTR_DURATION] = { .type = NLA_U32 }, 286 [NL80211_ATTR_COOKIE] = { .type = NLA_U64 }, 287 [NL80211_ATTR_TX_RATES] = { .type = NLA_NESTED }, 288 [NL80211_ATTR_FRAME] = { .type = NLA_BINARY, 289 .len = IEEE80211_MAX_DATA_LEN }, 290 [NL80211_ATTR_FRAME_MATCH] = { .type = NLA_BINARY, }, 291 [NL80211_ATTR_PS_STATE] = { .type = NLA_U32 }, 292 [NL80211_ATTR_CQM] = { .type = NLA_NESTED, }, 293 [NL80211_ATTR_LOCAL_STATE_CHANGE] = { .type = NLA_FLAG }, 294 [NL80211_ATTR_AP_ISOLATE] = { .type = NLA_U8 }, 295 [NL80211_ATTR_WIPHY_TX_POWER_SETTING] = { .type = NLA_U32 }, 296 [NL80211_ATTR_WIPHY_TX_POWER_LEVEL] = { .type = NLA_U32 }, 297 [NL80211_ATTR_FRAME_TYPE] = { .type = NLA_U16 }, 298 [NL80211_ATTR_WIPHY_ANTENNA_TX] = { .type = NLA_U32 }, 299 [NL80211_ATTR_WIPHY_ANTENNA_RX] = { .type = NLA_U32 }, 300 [NL80211_ATTR_MCAST_RATE] = { .type = NLA_U32 }, 301 [NL80211_ATTR_OFFCHANNEL_TX_OK] = { .type = NLA_FLAG }, 302 [NL80211_ATTR_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED }, 303 [NL80211_ATTR_WOWLAN_TRIGGERS] = { .type = NLA_NESTED }, 304 [NL80211_ATTR_STA_PLINK_STATE] = { .type = NLA_U8 }, 305 [NL80211_ATTR_SCHED_SCAN_INTERVAL] = { .type = NLA_U32 }, 306 [NL80211_ATTR_REKEY_DATA] = { .type = NLA_NESTED }, 307 [NL80211_ATTR_SCAN_SUPP_RATES] = { .type = NLA_NESTED }, 308 [NL80211_ATTR_HIDDEN_SSID] = { .type = NLA_U32 }, 309 [NL80211_ATTR_IE_PROBE_RESP] = { .type = NLA_BINARY, 310 .len = IEEE80211_MAX_DATA_LEN }, 311 [NL80211_ATTR_IE_ASSOC_RESP] = { .type = NLA_BINARY, 312 .len = IEEE80211_MAX_DATA_LEN }, 313 [NL80211_ATTR_ROAM_SUPPORT] = { .type = NLA_FLAG }, 314 [NL80211_ATTR_SCHED_SCAN_MATCH] = { .type = NLA_NESTED }, 315 [NL80211_ATTR_TX_NO_CCK_RATE] = { .type = NLA_FLAG }, 316 [NL80211_ATTR_TDLS_ACTION] = { .type = NLA_U8 }, 317 [NL80211_ATTR_TDLS_DIALOG_TOKEN] = { .type = NLA_U8 }, 318 [NL80211_ATTR_TDLS_OPERATION] = { .type = NLA_U8 }, 319 [NL80211_ATTR_TDLS_SUPPORT] = { .type = NLA_FLAG }, 320 [NL80211_ATTR_TDLS_EXTERNAL_SETUP] = { .type = NLA_FLAG }, 321 [NL80211_ATTR_DONT_WAIT_FOR_ACK] = { .type = NLA_FLAG }, 322 [NL80211_ATTR_PROBE_RESP] = { .type = NLA_BINARY, 323 .len = IEEE80211_MAX_DATA_LEN }, 324 [NL80211_ATTR_DFS_REGION] = { .type = NLA_U8 }, 325 [NL80211_ATTR_DISABLE_HT] = { .type = NLA_FLAG }, 326 [NL80211_ATTR_HT_CAPABILITY_MASK] = { 327 .len = NL80211_HT_CAPABILITY_LEN 328 }, 329 [NL80211_ATTR_NOACK_MAP] = { .type = NLA_U16 }, 330 [NL80211_ATTR_INACTIVITY_TIMEOUT] = { .type = NLA_U16 }, 331 [NL80211_ATTR_BG_SCAN_PERIOD] = { .type = NLA_U16 }, 332 [NL80211_ATTR_WDEV] = { .type = NLA_U64 }, 333 [NL80211_ATTR_USER_REG_HINT_TYPE] = { .type = NLA_U32 }, 334 [NL80211_ATTR_SAE_DATA] = { .type = NLA_BINARY, }, 335 [NL80211_ATTR_VHT_CAPABILITY] = { .len = NL80211_VHT_CAPABILITY_LEN }, 336 [NL80211_ATTR_SCAN_FLAGS] = { .type = NLA_U32 }, 337 [NL80211_ATTR_P2P_CTWINDOW] = { .type = NLA_U8 }, 338 [NL80211_ATTR_P2P_OPPPS] = { .type = NLA_U8 }, 339 [NL80211_ATTR_ACL_POLICY] = {. type = NLA_U32 }, 340 [NL80211_ATTR_MAC_ADDRS] = { .type = NLA_NESTED }, 341 [NL80211_ATTR_STA_CAPABILITY] = { .type = NLA_U16 }, 342 [NL80211_ATTR_STA_EXT_CAPABILITY] = { .type = NLA_BINARY, }, 343 [NL80211_ATTR_SPLIT_WIPHY_DUMP] = { .type = NLA_FLAG, }, 344 [NL80211_ATTR_DISABLE_VHT] = { .type = NLA_FLAG }, 345 [NL80211_ATTR_VHT_CAPABILITY_MASK] = { 346 .len = NL80211_VHT_CAPABILITY_LEN, 347 }, 348 [NL80211_ATTR_MDID] = { .type = NLA_U16 }, 349 [NL80211_ATTR_IE_RIC] = { .type = NLA_BINARY, 350 .len = IEEE80211_MAX_DATA_LEN }, 351 [NL80211_ATTR_PEER_AID] = { .type = NLA_U16 }, 352 [NL80211_ATTR_CH_SWITCH_COUNT] = { .type = NLA_U32 }, 353 [NL80211_ATTR_CH_SWITCH_BLOCK_TX] = { .type = NLA_FLAG }, 354 [NL80211_ATTR_CSA_IES] = { .type = NLA_NESTED }, 355 [NL80211_ATTR_CSA_C_OFF_BEACON] = { .type = NLA_U16 }, 356 [NL80211_ATTR_CSA_C_OFF_PRESP] = { .type = NLA_U16 }, 357 }; 358 359 /* policy for the key attributes */ 360 static const struct nla_policy nl80211_key_policy[NL80211_KEY_MAX + 1] = { 361 [NL80211_KEY_DATA] = { .type = NLA_BINARY, .len = WLAN_MAX_KEY_LEN }, 362 [NL80211_KEY_IDX] = { .type = NLA_U8 }, 363 [NL80211_KEY_CIPHER] = { .type = NLA_U32 }, 364 [NL80211_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 }, 365 [NL80211_KEY_DEFAULT] = { .type = NLA_FLAG }, 366 [NL80211_KEY_DEFAULT_MGMT] = { .type = NLA_FLAG }, 367 [NL80211_KEY_TYPE] = { .type = NLA_U32 }, 368 [NL80211_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED }, 369 }; 370 371 /* policy for the key default flags */ 372 static const struct nla_policy 373 nl80211_key_default_policy[NUM_NL80211_KEY_DEFAULT_TYPES] = { 374 [NL80211_KEY_DEFAULT_TYPE_UNICAST] = { .type = NLA_FLAG }, 375 [NL80211_KEY_DEFAULT_TYPE_MULTICAST] = { .type = NLA_FLAG }, 376 }; 377 378 /* policy for WoWLAN attributes */ 379 static const struct nla_policy 380 nl80211_wowlan_policy[NUM_NL80211_WOWLAN_TRIG] = { 381 [NL80211_WOWLAN_TRIG_ANY] = { .type = NLA_FLAG }, 382 [NL80211_WOWLAN_TRIG_DISCONNECT] = { .type = NLA_FLAG }, 383 [NL80211_WOWLAN_TRIG_MAGIC_PKT] = { .type = NLA_FLAG }, 384 [NL80211_WOWLAN_TRIG_PKT_PATTERN] = { .type = NLA_NESTED }, 385 [NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE] = { .type = NLA_FLAG }, 386 [NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST] = { .type = NLA_FLAG }, 387 [NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE] = { .type = NLA_FLAG }, 388 [NL80211_WOWLAN_TRIG_RFKILL_RELEASE] = { .type = NLA_FLAG }, 389 [NL80211_WOWLAN_TRIG_TCP_CONNECTION] = { .type = NLA_NESTED }, 390 }; 391 392 static const struct nla_policy 393 nl80211_wowlan_tcp_policy[NUM_NL80211_WOWLAN_TCP] = { 394 [NL80211_WOWLAN_TCP_SRC_IPV4] = { .type = NLA_U32 }, 395 [NL80211_WOWLAN_TCP_DST_IPV4] = { .type = NLA_U32 }, 396 [NL80211_WOWLAN_TCP_DST_MAC] = { .len = ETH_ALEN }, 397 [NL80211_WOWLAN_TCP_SRC_PORT] = { .type = NLA_U16 }, 398 [NL80211_WOWLAN_TCP_DST_PORT] = { .type = NLA_U16 }, 399 [NL80211_WOWLAN_TCP_DATA_PAYLOAD] = { .len = 1 }, 400 [NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ] = { 401 .len = sizeof(struct nl80211_wowlan_tcp_data_seq) 402 }, 403 [NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN] = { 404 .len = sizeof(struct nl80211_wowlan_tcp_data_token) 405 }, 406 [NL80211_WOWLAN_TCP_DATA_INTERVAL] = { .type = NLA_U32 }, 407 [NL80211_WOWLAN_TCP_WAKE_PAYLOAD] = { .len = 1 }, 408 [NL80211_WOWLAN_TCP_WAKE_MASK] = { .len = 1 }, 409 }; 410 411 /* policy for coalesce rule attributes */ 412 static const struct nla_policy 413 nl80211_coalesce_policy[NUM_NL80211_ATTR_COALESCE_RULE] = { 414 [NL80211_ATTR_COALESCE_RULE_DELAY] = { .type = NLA_U32 }, 415 [NL80211_ATTR_COALESCE_RULE_CONDITION] = { .type = NLA_U32 }, 416 [NL80211_ATTR_COALESCE_RULE_PKT_PATTERN] = { .type = NLA_NESTED }, 417 }; 418 419 /* policy for GTK rekey offload attributes */ 420 static const struct nla_policy 421 nl80211_rekey_policy[NUM_NL80211_REKEY_DATA] = { 422 [NL80211_REKEY_DATA_KEK] = { .len = NL80211_KEK_LEN }, 423 [NL80211_REKEY_DATA_KCK] = { .len = NL80211_KCK_LEN }, 424 [NL80211_REKEY_DATA_REPLAY_CTR] = { .len = NL80211_REPLAY_CTR_LEN }, 425 }; 426 427 static const struct nla_policy 428 nl80211_match_policy[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1] = { 429 [NL80211_SCHED_SCAN_MATCH_ATTR_SSID] = { .type = NLA_BINARY, 430 .len = IEEE80211_MAX_SSID_LEN }, 431 [NL80211_SCHED_SCAN_MATCH_ATTR_RSSI] = { .type = NLA_U32 }, 432 }; 433 434 static int nl80211_prepare_wdev_dump(struct sk_buff *skb, 435 struct netlink_callback *cb, 436 struct cfg80211_registered_device **rdev, 437 struct wireless_dev **wdev) 438 { 439 int err; 440 441 rtnl_lock(); 442 443 if (!cb->args[0]) { 444 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize, 445 nl80211_fam.attrbuf, nl80211_fam.maxattr, 446 nl80211_policy); 447 if (err) 448 goto out_unlock; 449 450 *wdev = __cfg80211_wdev_from_attrs(sock_net(skb->sk), 451 nl80211_fam.attrbuf); 452 if (IS_ERR(*wdev)) { 453 err = PTR_ERR(*wdev); 454 goto out_unlock; 455 } 456 *rdev = wiphy_to_dev((*wdev)->wiphy); 457 /* 0 is the first index - add 1 to parse only once */ 458 cb->args[0] = (*rdev)->wiphy_idx + 1; 459 cb->args[1] = (*wdev)->identifier; 460 } else { 461 /* subtract the 1 again here */ 462 struct wiphy *wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1); 463 struct wireless_dev *tmp; 464 465 if (!wiphy) { 466 err = -ENODEV; 467 goto out_unlock; 468 } 469 *rdev = wiphy_to_dev(wiphy); 470 *wdev = NULL; 471 472 list_for_each_entry(tmp, &(*rdev)->wdev_list, list) { 473 if (tmp->identifier == cb->args[1]) { 474 *wdev = tmp; 475 break; 476 } 477 } 478 479 if (!*wdev) { 480 err = -ENODEV; 481 goto out_unlock; 482 } 483 } 484 485 return 0; 486 out_unlock: 487 rtnl_unlock(); 488 return err; 489 } 490 491 static void nl80211_finish_wdev_dump(struct cfg80211_registered_device *rdev) 492 { 493 rtnl_unlock(); 494 } 495 496 /* IE validation */ 497 static bool is_valid_ie_attr(const struct nlattr *attr) 498 { 499 const u8 *pos; 500 int len; 501 502 if (!attr) 503 return true; 504 505 pos = nla_data(attr); 506 len = nla_len(attr); 507 508 while (len) { 509 u8 elemlen; 510 511 if (len < 2) 512 return false; 513 len -= 2; 514 515 elemlen = pos[1]; 516 if (elemlen > len) 517 return false; 518 519 len -= elemlen; 520 pos += 2 + elemlen; 521 } 522 523 return true; 524 } 525 526 /* message building helper */ 527 static inline void *nl80211hdr_put(struct sk_buff *skb, u32 portid, u32 seq, 528 int flags, u8 cmd) 529 { 530 /* since there is no private header just add the generic one */ 531 return genlmsg_put(skb, portid, seq, &nl80211_fam, flags, cmd); 532 } 533 534 static int nl80211_msg_put_channel(struct sk_buff *msg, 535 struct ieee80211_channel *chan, 536 bool large) 537 { 538 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_FREQ, 539 chan->center_freq)) 540 goto nla_put_failure; 541 542 if ((chan->flags & IEEE80211_CHAN_DISABLED) && 543 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_DISABLED)) 544 goto nla_put_failure; 545 if ((chan->flags & IEEE80211_CHAN_PASSIVE_SCAN) && 546 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_PASSIVE_SCAN)) 547 goto nla_put_failure; 548 if ((chan->flags & IEEE80211_CHAN_NO_IBSS) && 549 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_IBSS)) 550 goto nla_put_failure; 551 if (chan->flags & IEEE80211_CHAN_RADAR) { 552 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_RADAR)) 553 goto nla_put_failure; 554 if (large) { 555 u32 time; 556 557 time = elapsed_jiffies_msecs(chan->dfs_state_entered); 558 559 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_STATE, 560 chan->dfs_state)) 561 goto nla_put_failure; 562 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_TIME, 563 time)) 564 goto nla_put_failure; 565 } 566 } 567 568 if (large) { 569 if ((chan->flags & IEEE80211_CHAN_NO_HT40MINUS) && 570 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_MINUS)) 571 goto nla_put_failure; 572 if ((chan->flags & IEEE80211_CHAN_NO_HT40PLUS) && 573 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_PLUS)) 574 goto nla_put_failure; 575 if ((chan->flags & IEEE80211_CHAN_NO_80MHZ) && 576 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_80MHZ)) 577 goto nla_put_failure; 578 if ((chan->flags & IEEE80211_CHAN_NO_160MHZ) && 579 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_160MHZ)) 580 goto nla_put_failure; 581 } 582 583 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_MAX_TX_POWER, 584 DBM_TO_MBM(chan->max_power))) 585 goto nla_put_failure; 586 587 return 0; 588 589 nla_put_failure: 590 return -ENOBUFS; 591 } 592 593 /* netlink command implementations */ 594 595 struct key_parse { 596 struct key_params p; 597 int idx; 598 int type; 599 bool def, defmgmt; 600 bool def_uni, def_multi; 601 }; 602 603 static int nl80211_parse_key_new(struct nlattr *key, struct key_parse *k) 604 { 605 struct nlattr *tb[NL80211_KEY_MAX + 1]; 606 int err = nla_parse_nested(tb, NL80211_KEY_MAX, key, 607 nl80211_key_policy); 608 if (err) 609 return err; 610 611 k->def = !!tb[NL80211_KEY_DEFAULT]; 612 k->defmgmt = !!tb[NL80211_KEY_DEFAULT_MGMT]; 613 614 if (k->def) { 615 k->def_uni = true; 616 k->def_multi = true; 617 } 618 if (k->defmgmt) 619 k->def_multi = true; 620 621 if (tb[NL80211_KEY_IDX]) 622 k->idx = nla_get_u8(tb[NL80211_KEY_IDX]); 623 624 if (tb[NL80211_KEY_DATA]) { 625 k->p.key = nla_data(tb[NL80211_KEY_DATA]); 626 k->p.key_len = nla_len(tb[NL80211_KEY_DATA]); 627 } 628 629 if (tb[NL80211_KEY_SEQ]) { 630 k->p.seq = nla_data(tb[NL80211_KEY_SEQ]); 631 k->p.seq_len = nla_len(tb[NL80211_KEY_SEQ]); 632 } 633 634 if (tb[NL80211_KEY_CIPHER]) 635 k->p.cipher = nla_get_u32(tb[NL80211_KEY_CIPHER]); 636 637 if (tb[NL80211_KEY_TYPE]) { 638 k->type = nla_get_u32(tb[NL80211_KEY_TYPE]); 639 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES) 640 return -EINVAL; 641 } 642 643 if (tb[NL80211_KEY_DEFAULT_TYPES]) { 644 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES]; 645 err = nla_parse_nested(kdt, NUM_NL80211_KEY_DEFAULT_TYPES - 1, 646 tb[NL80211_KEY_DEFAULT_TYPES], 647 nl80211_key_default_policy); 648 if (err) 649 return err; 650 651 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST]; 652 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST]; 653 } 654 655 return 0; 656 } 657 658 static int nl80211_parse_key_old(struct genl_info *info, struct key_parse *k) 659 { 660 if (info->attrs[NL80211_ATTR_KEY_DATA]) { 661 k->p.key = nla_data(info->attrs[NL80211_ATTR_KEY_DATA]); 662 k->p.key_len = nla_len(info->attrs[NL80211_ATTR_KEY_DATA]); 663 } 664 665 if (info->attrs[NL80211_ATTR_KEY_SEQ]) { 666 k->p.seq = nla_data(info->attrs[NL80211_ATTR_KEY_SEQ]); 667 k->p.seq_len = nla_len(info->attrs[NL80211_ATTR_KEY_SEQ]); 668 } 669 670 if (info->attrs[NL80211_ATTR_KEY_IDX]) 671 k->idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]); 672 673 if (info->attrs[NL80211_ATTR_KEY_CIPHER]) 674 k->p.cipher = nla_get_u32(info->attrs[NL80211_ATTR_KEY_CIPHER]); 675 676 k->def = !!info->attrs[NL80211_ATTR_KEY_DEFAULT]; 677 k->defmgmt = !!info->attrs[NL80211_ATTR_KEY_DEFAULT_MGMT]; 678 679 if (k->def) { 680 k->def_uni = true; 681 k->def_multi = true; 682 } 683 if (k->defmgmt) 684 k->def_multi = true; 685 686 if (info->attrs[NL80211_ATTR_KEY_TYPE]) { 687 k->type = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]); 688 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES) 689 return -EINVAL; 690 } 691 692 if (info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES]) { 693 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES]; 694 int err = nla_parse_nested( 695 kdt, NUM_NL80211_KEY_DEFAULT_TYPES - 1, 696 info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES], 697 nl80211_key_default_policy); 698 if (err) 699 return err; 700 701 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST]; 702 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST]; 703 } 704 705 return 0; 706 } 707 708 static int nl80211_parse_key(struct genl_info *info, struct key_parse *k) 709 { 710 int err; 711 712 memset(k, 0, sizeof(*k)); 713 k->idx = -1; 714 k->type = -1; 715 716 if (info->attrs[NL80211_ATTR_KEY]) 717 err = nl80211_parse_key_new(info->attrs[NL80211_ATTR_KEY], k); 718 else 719 err = nl80211_parse_key_old(info, k); 720 721 if (err) 722 return err; 723 724 if (k->def && k->defmgmt) 725 return -EINVAL; 726 727 if (k->defmgmt) { 728 if (k->def_uni || !k->def_multi) 729 return -EINVAL; 730 } 731 732 if (k->idx != -1) { 733 if (k->defmgmt) { 734 if (k->idx < 4 || k->idx > 5) 735 return -EINVAL; 736 } else if (k->def) { 737 if (k->idx < 0 || k->idx > 3) 738 return -EINVAL; 739 } else { 740 if (k->idx < 0 || k->idx > 5) 741 return -EINVAL; 742 } 743 } 744 745 return 0; 746 } 747 748 static struct cfg80211_cached_keys * 749 nl80211_parse_connkeys(struct cfg80211_registered_device *rdev, 750 struct nlattr *keys, bool *no_ht) 751 { 752 struct key_parse parse; 753 struct nlattr *key; 754 struct cfg80211_cached_keys *result; 755 int rem, err, def = 0; 756 757 result = kzalloc(sizeof(*result), GFP_KERNEL); 758 if (!result) 759 return ERR_PTR(-ENOMEM); 760 761 result->def = -1; 762 result->defmgmt = -1; 763 764 nla_for_each_nested(key, keys, rem) { 765 memset(&parse, 0, sizeof(parse)); 766 parse.idx = -1; 767 768 err = nl80211_parse_key_new(key, &parse); 769 if (err) 770 goto error; 771 err = -EINVAL; 772 if (!parse.p.key) 773 goto error; 774 if (parse.idx < 0 || parse.idx > 4) 775 goto error; 776 if (parse.def) { 777 if (def) 778 goto error; 779 def = 1; 780 result->def = parse.idx; 781 if (!parse.def_uni || !parse.def_multi) 782 goto error; 783 } else if (parse.defmgmt) 784 goto error; 785 err = cfg80211_validate_key_settings(rdev, &parse.p, 786 parse.idx, false, NULL); 787 if (err) 788 goto error; 789 result->params[parse.idx].cipher = parse.p.cipher; 790 result->params[parse.idx].key_len = parse.p.key_len; 791 result->params[parse.idx].key = result->data[parse.idx]; 792 memcpy(result->data[parse.idx], parse.p.key, parse.p.key_len); 793 794 if (parse.p.cipher == WLAN_CIPHER_SUITE_WEP40 || 795 parse.p.cipher == WLAN_CIPHER_SUITE_WEP104) { 796 if (no_ht) 797 *no_ht = true; 798 } 799 } 800 801 return result; 802 error: 803 kfree(result); 804 return ERR_PTR(err); 805 } 806 807 static int nl80211_key_allowed(struct wireless_dev *wdev) 808 { 809 ASSERT_WDEV_LOCK(wdev); 810 811 switch (wdev->iftype) { 812 case NL80211_IFTYPE_AP: 813 case NL80211_IFTYPE_AP_VLAN: 814 case NL80211_IFTYPE_P2P_GO: 815 case NL80211_IFTYPE_MESH_POINT: 816 break; 817 case NL80211_IFTYPE_ADHOC: 818 case NL80211_IFTYPE_STATION: 819 case NL80211_IFTYPE_P2P_CLIENT: 820 if (!wdev->current_bss) 821 return -ENOLINK; 822 break; 823 default: 824 return -EINVAL; 825 } 826 827 return 0; 828 } 829 830 static int nl80211_put_iftypes(struct sk_buff *msg, u32 attr, u16 ifmodes) 831 { 832 struct nlattr *nl_modes = nla_nest_start(msg, attr); 833 int i; 834 835 if (!nl_modes) 836 goto nla_put_failure; 837 838 i = 0; 839 while (ifmodes) { 840 if ((ifmodes & 1) && nla_put_flag(msg, i)) 841 goto nla_put_failure; 842 ifmodes >>= 1; 843 i++; 844 } 845 846 nla_nest_end(msg, nl_modes); 847 return 0; 848 849 nla_put_failure: 850 return -ENOBUFS; 851 } 852 853 static int nl80211_put_iface_combinations(struct wiphy *wiphy, 854 struct sk_buff *msg, 855 bool large) 856 { 857 struct nlattr *nl_combis; 858 int i, j; 859 860 nl_combis = nla_nest_start(msg, 861 NL80211_ATTR_INTERFACE_COMBINATIONS); 862 if (!nl_combis) 863 goto nla_put_failure; 864 865 for (i = 0; i < wiphy->n_iface_combinations; i++) { 866 const struct ieee80211_iface_combination *c; 867 struct nlattr *nl_combi, *nl_limits; 868 869 c = &wiphy->iface_combinations[i]; 870 871 nl_combi = nla_nest_start(msg, i + 1); 872 if (!nl_combi) 873 goto nla_put_failure; 874 875 nl_limits = nla_nest_start(msg, NL80211_IFACE_COMB_LIMITS); 876 if (!nl_limits) 877 goto nla_put_failure; 878 879 for (j = 0; j < c->n_limits; j++) { 880 struct nlattr *nl_limit; 881 882 nl_limit = nla_nest_start(msg, j + 1); 883 if (!nl_limit) 884 goto nla_put_failure; 885 if (nla_put_u32(msg, NL80211_IFACE_LIMIT_MAX, 886 c->limits[j].max)) 887 goto nla_put_failure; 888 if (nl80211_put_iftypes(msg, NL80211_IFACE_LIMIT_TYPES, 889 c->limits[j].types)) 890 goto nla_put_failure; 891 nla_nest_end(msg, nl_limit); 892 } 893 894 nla_nest_end(msg, nl_limits); 895 896 if (c->beacon_int_infra_match && 897 nla_put_flag(msg, NL80211_IFACE_COMB_STA_AP_BI_MATCH)) 898 goto nla_put_failure; 899 if (nla_put_u32(msg, NL80211_IFACE_COMB_NUM_CHANNELS, 900 c->num_different_channels) || 901 nla_put_u32(msg, NL80211_IFACE_COMB_MAXNUM, 902 c->max_interfaces)) 903 goto nla_put_failure; 904 if (large && 905 nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_WIDTHS, 906 c->radar_detect_widths)) 907 goto nla_put_failure; 908 909 nla_nest_end(msg, nl_combi); 910 } 911 912 nla_nest_end(msg, nl_combis); 913 914 return 0; 915 nla_put_failure: 916 return -ENOBUFS; 917 } 918 919 #ifdef CONFIG_PM 920 static int nl80211_send_wowlan_tcp_caps(struct cfg80211_registered_device *rdev, 921 struct sk_buff *msg) 922 { 923 const struct wiphy_wowlan_tcp_support *tcp = rdev->wiphy.wowlan->tcp; 924 struct nlattr *nl_tcp; 925 926 if (!tcp) 927 return 0; 928 929 nl_tcp = nla_nest_start(msg, NL80211_WOWLAN_TRIG_TCP_CONNECTION); 930 if (!nl_tcp) 931 return -ENOBUFS; 932 933 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD, 934 tcp->data_payload_max)) 935 return -ENOBUFS; 936 937 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD, 938 tcp->data_payload_max)) 939 return -ENOBUFS; 940 941 if (tcp->seq && nla_put_flag(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ)) 942 return -ENOBUFS; 943 944 if (tcp->tok && nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN, 945 sizeof(*tcp->tok), tcp->tok)) 946 return -ENOBUFS; 947 948 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL, 949 tcp->data_interval_max)) 950 return -ENOBUFS; 951 952 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD, 953 tcp->wake_payload_max)) 954 return -ENOBUFS; 955 956 nla_nest_end(msg, nl_tcp); 957 return 0; 958 } 959 960 static int nl80211_send_wowlan(struct sk_buff *msg, 961 struct cfg80211_registered_device *dev, 962 bool large) 963 { 964 struct nlattr *nl_wowlan; 965 966 if (!dev->wiphy.wowlan) 967 return 0; 968 969 nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS_SUPPORTED); 970 if (!nl_wowlan) 971 return -ENOBUFS; 972 973 if (((dev->wiphy.wowlan->flags & WIPHY_WOWLAN_ANY) && 974 nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) || 975 ((dev->wiphy.wowlan->flags & WIPHY_WOWLAN_DISCONNECT) && 976 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) || 977 ((dev->wiphy.wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT) && 978 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) || 979 ((dev->wiphy.wowlan->flags & WIPHY_WOWLAN_SUPPORTS_GTK_REKEY) && 980 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED)) || 981 ((dev->wiphy.wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE) && 982 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) || 983 ((dev->wiphy.wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ) && 984 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) || 985 ((dev->wiphy.wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE) && 986 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) || 987 ((dev->wiphy.wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE) && 988 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE))) 989 return -ENOBUFS; 990 991 if (dev->wiphy.wowlan->n_patterns) { 992 struct nl80211_pattern_support pat = { 993 .max_patterns = dev->wiphy.wowlan->n_patterns, 994 .min_pattern_len = dev->wiphy.wowlan->pattern_min_len, 995 .max_pattern_len = dev->wiphy.wowlan->pattern_max_len, 996 .max_pkt_offset = dev->wiphy.wowlan->max_pkt_offset, 997 }; 998 999 if (nla_put(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN, 1000 sizeof(pat), &pat)) 1001 return -ENOBUFS; 1002 } 1003 1004 if (large && nl80211_send_wowlan_tcp_caps(dev, msg)) 1005 return -ENOBUFS; 1006 1007 nla_nest_end(msg, nl_wowlan); 1008 1009 return 0; 1010 } 1011 #endif 1012 1013 static int nl80211_send_coalesce(struct sk_buff *msg, 1014 struct cfg80211_registered_device *dev) 1015 { 1016 struct nl80211_coalesce_rule_support rule; 1017 1018 if (!dev->wiphy.coalesce) 1019 return 0; 1020 1021 rule.max_rules = dev->wiphy.coalesce->n_rules; 1022 rule.max_delay = dev->wiphy.coalesce->max_delay; 1023 rule.pat.max_patterns = dev->wiphy.coalesce->n_patterns; 1024 rule.pat.min_pattern_len = dev->wiphy.coalesce->pattern_min_len; 1025 rule.pat.max_pattern_len = dev->wiphy.coalesce->pattern_max_len; 1026 rule.pat.max_pkt_offset = dev->wiphy.coalesce->max_pkt_offset; 1027 1028 if (nla_put(msg, NL80211_ATTR_COALESCE_RULE, sizeof(rule), &rule)) 1029 return -ENOBUFS; 1030 1031 return 0; 1032 } 1033 1034 static int nl80211_send_band_rateinfo(struct sk_buff *msg, 1035 struct ieee80211_supported_band *sband) 1036 { 1037 struct nlattr *nl_rates, *nl_rate; 1038 struct ieee80211_rate *rate; 1039 int i; 1040 1041 /* add HT info */ 1042 if (sband->ht_cap.ht_supported && 1043 (nla_put(msg, NL80211_BAND_ATTR_HT_MCS_SET, 1044 sizeof(sband->ht_cap.mcs), 1045 &sband->ht_cap.mcs) || 1046 nla_put_u16(msg, NL80211_BAND_ATTR_HT_CAPA, 1047 sband->ht_cap.cap) || 1048 nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_FACTOR, 1049 sband->ht_cap.ampdu_factor) || 1050 nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_DENSITY, 1051 sband->ht_cap.ampdu_density))) 1052 return -ENOBUFS; 1053 1054 /* add VHT info */ 1055 if (sband->vht_cap.vht_supported && 1056 (nla_put(msg, NL80211_BAND_ATTR_VHT_MCS_SET, 1057 sizeof(sband->vht_cap.vht_mcs), 1058 &sband->vht_cap.vht_mcs) || 1059 nla_put_u32(msg, NL80211_BAND_ATTR_VHT_CAPA, 1060 sband->vht_cap.cap))) 1061 return -ENOBUFS; 1062 1063 /* add bitrates */ 1064 nl_rates = nla_nest_start(msg, NL80211_BAND_ATTR_RATES); 1065 if (!nl_rates) 1066 return -ENOBUFS; 1067 1068 for (i = 0; i < sband->n_bitrates; i++) { 1069 nl_rate = nla_nest_start(msg, i); 1070 if (!nl_rate) 1071 return -ENOBUFS; 1072 1073 rate = &sband->bitrates[i]; 1074 if (nla_put_u32(msg, NL80211_BITRATE_ATTR_RATE, 1075 rate->bitrate)) 1076 return -ENOBUFS; 1077 if ((rate->flags & IEEE80211_RATE_SHORT_PREAMBLE) && 1078 nla_put_flag(msg, 1079 NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE)) 1080 return -ENOBUFS; 1081 1082 nla_nest_end(msg, nl_rate); 1083 } 1084 1085 nla_nest_end(msg, nl_rates); 1086 1087 return 0; 1088 } 1089 1090 static int 1091 nl80211_send_mgmt_stypes(struct sk_buff *msg, 1092 const struct ieee80211_txrx_stypes *mgmt_stypes) 1093 { 1094 u16 stypes; 1095 struct nlattr *nl_ftypes, *nl_ifs; 1096 enum nl80211_iftype ift; 1097 int i; 1098 1099 if (!mgmt_stypes) 1100 return 0; 1101 1102 nl_ifs = nla_nest_start(msg, NL80211_ATTR_TX_FRAME_TYPES); 1103 if (!nl_ifs) 1104 return -ENOBUFS; 1105 1106 for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) { 1107 nl_ftypes = nla_nest_start(msg, ift); 1108 if (!nl_ftypes) 1109 return -ENOBUFS; 1110 i = 0; 1111 stypes = mgmt_stypes[ift].tx; 1112 while (stypes) { 1113 if ((stypes & 1) && 1114 nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE, 1115 (i << 4) | IEEE80211_FTYPE_MGMT)) 1116 return -ENOBUFS; 1117 stypes >>= 1; 1118 i++; 1119 } 1120 nla_nest_end(msg, nl_ftypes); 1121 } 1122 1123 nla_nest_end(msg, nl_ifs); 1124 1125 nl_ifs = nla_nest_start(msg, NL80211_ATTR_RX_FRAME_TYPES); 1126 if (!nl_ifs) 1127 return -ENOBUFS; 1128 1129 for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) { 1130 nl_ftypes = nla_nest_start(msg, ift); 1131 if (!nl_ftypes) 1132 return -ENOBUFS; 1133 i = 0; 1134 stypes = mgmt_stypes[ift].rx; 1135 while (stypes) { 1136 if ((stypes & 1) && 1137 nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE, 1138 (i << 4) | IEEE80211_FTYPE_MGMT)) 1139 return -ENOBUFS; 1140 stypes >>= 1; 1141 i++; 1142 } 1143 nla_nest_end(msg, nl_ftypes); 1144 } 1145 nla_nest_end(msg, nl_ifs); 1146 1147 return 0; 1148 } 1149 1150 struct nl80211_dump_wiphy_state { 1151 s64 filter_wiphy; 1152 long start; 1153 long split_start, band_start, chan_start; 1154 bool split; 1155 }; 1156 1157 static int nl80211_send_wiphy(struct cfg80211_registered_device *dev, 1158 struct sk_buff *msg, u32 portid, u32 seq, 1159 int flags, struct nl80211_dump_wiphy_state *state) 1160 { 1161 void *hdr; 1162 struct nlattr *nl_bands, *nl_band; 1163 struct nlattr *nl_freqs, *nl_freq; 1164 struct nlattr *nl_cmds; 1165 enum ieee80211_band band; 1166 struct ieee80211_channel *chan; 1167 int i; 1168 const struct ieee80211_txrx_stypes *mgmt_stypes = 1169 dev->wiphy.mgmt_stypes; 1170 u32 features; 1171 1172 hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_WIPHY); 1173 if (!hdr) 1174 return -ENOBUFS; 1175 1176 if (WARN_ON(!state)) 1177 return -EINVAL; 1178 1179 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, dev->wiphy_idx) || 1180 nla_put_string(msg, NL80211_ATTR_WIPHY_NAME, 1181 wiphy_name(&dev->wiphy)) || 1182 nla_put_u32(msg, NL80211_ATTR_GENERATION, 1183 cfg80211_rdev_list_generation)) 1184 goto nla_put_failure; 1185 1186 switch (state->split_start) { 1187 case 0: 1188 if (nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_SHORT, 1189 dev->wiphy.retry_short) || 1190 nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_LONG, 1191 dev->wiphy.retry_long) || 1192 nla_put_u32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD, 1193 dev->wiphy.frag_threshold) || 1194 nla_put_u32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD, 1195 dev->wiphy.rts_threshold) || 1196 nla_put_u8(msg, NL80211_ATTR_WIPHY_COVERAGE_CLASS, 1197 dev->wiphy.coverage_class) || 1198 nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCAN_SSIDS, 1199 dev->wiphy.max_scan_ssids) || 1200 nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS, 1201 dev->wiphy.max_sched_scan_ssids) || 1202 nla_put_u16(msg, NL80211_ATTR_MAX_SCAN_IE_LEN, 1203 dev->wiphy.max_scan_ie_len) || 1204 nla_put_u16(msg, NL80211_ATTR_MAX_SCHED_SCAN_IE_LEN, 1205 dev->wiphy.max_sched_scan_ie_len) || 1206 nla_put_u8(msg, NL80211_ATTR_MAX_MATCH_SETS, 1207 dev->wiphy.max_match_sets)) 1208 goto nla_put_failure; 1209 1210 if ((dev->wiphy.flags & WIPHY_FLAG_IBSS_RSN) && 1211 nla_put_flag(msg, NL80211_ATTR_SUPPORT_IBSS_RSN)) 1212 goto nla_put_failure; 1213 if ((dev->wiphy.flags & WIPHY_FLAG_MESH_AUTH) && 1214 nla_put_flag(msg, NL80211_ATTR_SUPPORT_MESH_AUTH)) 1215 goto nla_put_failure; 1216 if ((dev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) && 1217 nla_put_flag(msg, NL80211_ATTR_SUPPORT_AP_UAPSD)) 1218 goto nla_put_failure; 1219 if ((dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_FW_ROAM) && 1220 nla_put_flag(msg, NL80211_ATTR_ROAM_SUPPORT)) 1221 goto nla_put_failure; 1222 if ((dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) && 1223 nla_put_flag(msg, NL80211_ATTR_TDLS_SUPPORT)) 1224 goto nla_put_failure; 1225 if ((dev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP) && 1226 nla_put_flag(msg, NL80211_ATTR_TDLS_EXTERNAL_SETUP)) 1227 goto nla_put_failure; 1228 if ((dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ) && 1229 nla_put_flag(msg, WIPHY_FLAG_SUPPORTS_5_10_MHZ)) 1230 goto nla_put_failure; 1231 1232 state->split_start++; 1233 if (state->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 state->split_start++; 1278 if (state->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 state->split_start++; 1285 if (state->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 = state->band_start; 1293 band < IEEE80211_NUM_BANDS; band++) { 1294 struct ieee80211_supported_band *sband; 1295 1296 sband = dev->wiphy.bands[band]; 1297 1298 if (!sband) 1299 continue; 1300 1301 nl_band = nla_nest_start(msg, band); 1302 if (!nl_band) 1303 goto nla_put_failure; 1304 1305 switch (state->chan_start) { 1306 case 0: 1307 if (nl80211_send_band_rateinfo(msg, sband)) 1308 goto nla_put_failure; 1309 state->chan_start++; 1310 if (state->split) 1311 break; 1312 default: 1313 /* add frequencies */ 1314 nl_freqs = nla_nest_start( 1315 msg, NL80211_BAND_ATTR_FREQS); 1316 if (!nl_freqs) 1317 goto nla_put_failure; 1318 1319 for (i = state->chan_start - 1; 1320 i < sband->n_channels; 1321 i++) { 1322 nl_freq = nla_nest_start(msg, i); 1323 if (!nl_freq) 1324 goto nla_put_failure; 1325 1326 chan = &sband->channels[i]; 1327 1328 if (nl80211_msg_put_channel( 1329 msg, chan, 1330 state->split)) 1331 goto nla_put_failure; 1332 1333 nla_nest_end(msg, nl_freq); 1334 if (state->split) 1335 break; 1336 } 1337 if (i < sband->n_channels) 1338 state->chan_start = i + 2; 1339 else 1340 state->chan_start = 0; 1341 nla_nest_end(msg, nl_freqs); 1342 } 1343 1344 nla_nest_end(msg, nl_band); 1345 1346 if (state->split) { 1347 /* start again here */ 1348 if (state->chan_start) 1349 band--; 1350 break; 1351 } 1352 } 1353 nla_nest_end(msg, nl_bands); 1354 1355 if (band < IEEE80211_NUM_BANDS) 1356 state->band_start = band + 1; 1357 else 1358 state->band_start = 0; 1359 1360 /* if bands & channels are done, continue outside */ 1361 if (state->band_start == 0 && state->chan_start == 0) 1362 state->split_start++; 1363 if (state->split) 1364 break; 1365 case 4: 1366 nl_cmds = nla_nest_start(msg, NL80211_ATTR_SUPPORTED_COMMANDS); 1367 if (!nl_cmds) 1368 goto nla_put_failure; 1369 1370 i = 0; 1371 #define CMD(op, n) \ 1372 do { \ 1373 if (dev->ops->op) { \ 1374 i++; \ 1375 if (nla_put_u32(msg, i, NL80211_CMD_ ## n)) \ 1376 goto nla_put_failure; \ 1377 } \ 1378 } while (0) 1379 1380 CMD(add_virtual_intf, NEW_INTERFACE); 1381 CMD(change_virtual_intf, SET_INTERFACE); 1382 CMD(add_key, NEW_KEY); 1383 CMD(start_ap, START_AP); 1384 CMD(add_station, NEW_STATION); 1385 CMD(add_mpath, NEW_MPATH); 1386 CMD(update_mesh_config, SET_MESH_CONFIG); 1387 CMD(change_bss, SET_BSS); 1388 CMD(auth, AUTHENTICATE); 1389 CMD(assoc, ASSOCIATE); 1390 CMD(deauth, DEAUTHENTICATE); 1391 CMD(disassoc, DISASSOCIATE); 1392 CMD(join_ibss, JOIN_IBSS); 1393 CMD(join_mesh, JOIN_MESH); 1394 CMD(set_pmksa, SET_PMKSA); 1395 CMD(del_pmksa, DEL_PMKSA); 1396 CMD(flush_pmksa, FLUSH_PMKSA); 1397 if (dev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL) 1398 CMD(remain_on_channel, REMAIN_ON_CHANNEL); 1399 CMD(set_bitrate_mask, SET_TX_BITRATE_MASK); 1400 CMD(mgmt_tx, FRAME); 1401 CMD(mgmt_tx_cancel_wait, FRAME_WAIT_CANCEL); 1402 if (dev->wiphy.flags & WIPHY_FLAG_NETNS_OK) { 1403 i++; 1404 if (nla_put_u32(msg, i, NL80211_CMD_SET_WIPHY_NETNS)) 1405 goto nla_put_failure; 1406 } 1407 if (dev->ops->set_monitor_channel || dev->ops->start_ap || 1408 dev->ops->join_mesh) { 1409 i++; 1410 if (nla_put_u32(msg, i, NL80211_CMD_SET_CHANNEL)) 1411 goto nla_put_failure; 1412 } 1413 CMD(set_wds_peer, SET_WDS_PEER); 1414 if (dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) { 1415 CMD(tdls_mgmt, TDLS_MGMT); 1416 CMD(tdls_oper, TDLS_OPER); 1417 } 1418 if (dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) 1419 CMD(sched_scan_start, START_SCHED_SCAN); 1420 CMD(probe_client, PROBE_CLIENT); 1421 CMD(set_noack_map, SET_NOACK_MAP); 1422 if (dev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS) { 1423 i++; 1424 if (nla_put_u32(msg, i, NL80211_CMD_REGISTER_BEACONS)) 1425 goto nla_put_failure; 1426 } 1427 CMD(start_p2p_device, START_P2P_DEVICE); 1428 CMD(set_mcast_rate, SET_MCAST_RATE); 1429 if (state->split) { 1430 CMD(crit_proto_start, CRIT_PROTOCOL_START); 1431 CMD(crit_proto_stop, CRIT_PROTOCOL_STOP); 1432 if (dev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH) 1433 CMD(channel_switch, CHANNEL_SWITCH); 1434 } 1435 1436 #ifdef CONFIG_NL80211_TESTMODE 1437 CMD(testmode_cmd, TESTMODE); 1438 #endif 1439 1440 #undef CMD 1441 1442 if (dev->ops->connect || dev->ops->auth) { 1443 i++; 1444 if (nla_put_u32(msg, i, NL80211_CMD_CONNECT)) 1445 goto nla_put_failure; 1446 } 1447 1448 if (dev->ops->disconnect || dev->ops->deauth) { 1449 i++; 1450 if (nla_put_u32(msg, i, NL80211_CMD_DISCONNECT)) 1451 goto nla_put_failure; 1452 } 1453 1454 nla_nest_end(msg, nl_cmds); 1455 state->split_start++; 1456 if (state->split) 1457 break; 1458 case 5: 1459 if (dev->ops->remain_on_channel && 1460 (dev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL) && 1461 nla_put_u32(msg, 1462 NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION, 1463 dev->wiphy.max_remain_on_channel_duration)) 1464 goto nla_put_failure; 1465 1466 if ((dev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX) && 1467 nla_put_flag(msg, NL80211_ATTR_OFFCHANNEL_TX_OK)) 1468 goto nla_put_failure; 1469 1470 if (nl80211_send_mgmt_stypes(msg, mgmt_stypes)) 1471 goto nla_put_failure; 1472 state->split_start++; 1473 if (state->split) 1474 break; 1475 case 6: 1476 #ifdef CONFIG_PM 1477 if (nl80211_send_wowlan(msg, dev, state->split)) 1478 goto nla_put_failure; 1479 state->split_start++; 1480 if (state->split) 1481 break; 1482 #else 1483 state->split_start++; 1484 #endif 1485 case 7: 1486 if (nl80211_put_iftypes(msg, NL80211_ATTR_SOFTWARE_IFTYPES, 1487 dev->wiphy.software_iftypes)) 1488 goto nla_put_failure; 1489 1490 if (nl80211_put_iface_combinations(&dev->wiphy, msg, 1491 state->split)) 1492 goto nla_put_failure; 1493 1494 state->split_start++; 1495 if (state->split) 1496 break; 1497 case 8: 1498 if ((dev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME) && 1499 nla_put_u32(msg, NL80211_ATTR_DEVICE_AP_SME, 1500 dev->wiphy.ap_sme_capa)) 1501 goto nla_put_failure; 1502 1503 features = dev->wiphy.features; 1504 /* 1505 * We can only add the per-channel limit information if the 1506 * dump is split, otherwise it makes it too big. Therefore 1507 * only advertise it in that case. 1508 */ 1509 if (state->split) 1510 features |= NL80211_FEATURE_ADVERTISE_CHAN_LIMITS; 1511 if (nla_put_u32(msg, NL80211_ATTR_FEATURE_FLAGS, features)) 1512 goto nla_put_failure; 1513 1514 if (dev->wiphy.ht_capa_mod_mask && 1515 nla_put(msg, NL80211_ATTR_HT_CAPABILITY_MASK, 1516 sizeof(*dev->wiphy.ht_capa_mod_mask), 1517 dev->wiphy.ht_capa_mod_mask)) 1518 goto nla_put_failure; 1519 1520 if (dev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME && 1521 dev->wiphy.max_acl_mac_addrs && 1522 nla_put_u32(msg, NL80211_ATTR_MAC_ACL_MAX, 1523 dev->wiphy.max_acl_mac_addrs)) 1524 goto nla_put_failure; 1525 1526 /* 1527 * Any information below this point is only available to 1528 * applications that can deal with it being split. This 1529 * helps ensure that newly added capabilities don't break 1530 * older tools by overrunning their buffers. 1531 * 1532 * We still increment split_start so that in the split 1533 * case we'll continue with more data in the next round, 1534 * but break unconditionally so unsplit data stops here. 1535 */ 1536 state->split_start++; 1537 break; 1538 case 9: 1539 if (dev->wiphy.extended_capabilities && 1540 (nla_put(msg, NL80211_ATTR_EXT_CAPA, 1541 dev->wiphy.extended_capabilities_len, 1542 dev->wiphy.extended_capabilities) || 1543 nla_put(msg, NL80211_ATTR_EXT_CAPA_MASK, 1544 dev->wiphy.extended_capabilities_len, 1545 dev->wiphy.extended_capabilities_mask))) 1546 goto nla_put_failure; 1547 1548 if (dev->wiphy.vht_capa_mod_mask && 1549 nla_put(msg, NL80211_ATTR_VHT_CAPABILITY_MASK, 1550 sizeof(*dev->wiphy.vht_capa_mod_mask), 1551 dev->wiphy.vht_capa_mod_mask)) 1552 goto nla_put_failure; 1553 1554 state->split_start++; 1555 break; 1556 case 10: 1557 if (nl80211_send_coalesce(msg, dev)) 1558 goto nla_put_failure; 1559 1560 /* done */ 1561 state->split_start = 0; 1562 break; 1563 } 1564 return genlmsg_end(msg, hdr); 1565 1566 nla_put_failure: 1567 genlmsg_cancel(msg, hdr); 1568 return -EMSGSIZE; 1569 } 1570 1571 static int nl80211_dump_wiphy_parse(struct sk_buff *skb, 1572 struct netlink_callback *cb, 1573 struct nl80211_dump_wiphy_state *state) 1574 { 1575 struct nlattr **tb = nl80211_fam.attrbuf; 1576 int ret = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize, 1577 tb, nl80211_fam.maxattr, nl80211_policy); 1578 /* ignore parse errors for backward compatibility */ 1579 if (ret) 1580 return 0; 1581 1582 state->split = tb[NL80211_ATTR_SPLIT_WIPHY_DUMP]; 1583 if (tb[NL80211_ATTR_WIPHY]) 1584 state->filter_wiphy = nla_get_u32(tb[NL80211_ATTR_WIPHY]); 1585 if (tb[NL80211_ATTR_WDEV]) 1586 state->filter_wiphy = nla_get_u64(tb[NL80211_ATTR_WDEV]) >> 32; 1587 if (tb[NL80211_ATTR_IFINDEX]) { 1588 struct net_device *netdev; 1589 struct cfg80211_registered_device *rdev; 1590 int ifidx = nla_get_u32(tb[NL80211_ATTR_IFINDEX]); 1591 1592 netdev = dev_get_by_index(sock_net(skb->sk), ifidx); 1593 if (!netdev) 1594 return -ENODEV; 1595 if (netdev->ieee80211_ptr) { 1596 rdev = wiphy_to_dev( 1597 netdev->ieee80211_ptr->wiphy); 1598 state->filter_wiphy = rdev->wiphy_idx; 1599 } 1600 dev_put(netdev); 1601 } 1602 1603 return 0; 1604 } 1605 1606 static int nl80211_dump_wiphy(struct sk_buff *skb, struct netlink_callback *cb) 1607 { 1608 int idx = 0, ret; 1609 struct nl80211_dump_wiphy_state *state = (void *)cb->args[0]; 1610 struct cfg80211_registered_device *dev; 1611 1612 rtnl_lock(); 1613 if (!state) { 1614 state = kzalloc(sizeof(*state), GFP_KERNEL); 1615 if (!state) { 1616 rtnl_unlock(); 1617 return -ENOMEM; 1618 } 1619 state->filter_wiphy = -1; 1620 ret = nl80211_dump_wiphy_parse(skb, cb, state); 1621 if (ret) { 1622 kfree(state); 1623 rtnl_unlock(); 1624 return ret; 1625 } 1626 cb->args[0] = (long)state; 1627 } 1628 1629 list_for_each_entry(dev, &cfg80211_rdev_list, list) { 1630 if (!net_eq(wiphy_net(&dev->wiphy), sock_net(skb->sk))) 1631 continue; 1632 if (++idx <= state->start) 1633 continue; 1634 if (state->filter_wiphy != -1 && 1635 state->filter_wiphy != dev->wiphy_idx) 1636 continue; 1637 /* attempt to fit multiple wiphy data chunks into the skb */ 1638 do { 1639 ret = nl80211_send_wiphy(dev, skb, 1640 NETLINK_CB(cb->skb).portid, 1641 cb->nlh->nlmsg_seq, 1642 NLM_F_MULTI, state); 1643 if (ret < 0) { 1644 /* 1645 * If sending the wiphy data didn't fit (ENOBUFS 1646 * or EMSGSIZE returned), this SKB is still 1647 * empty (so it's not too big because another 1648 * wiphy dataset is already in the skb) and 1649 * we've not tried to adjust the dump allocation 1650 * yet ... then adjust the alloc size to be 1651 * bigger, and return 1 but with the empty skb. 1652 * This results in an empty message being RX'ed 1653 * in userspace, but that is ignored. 1654 * 1655 * We can then retry with the larger buffer. 1656 */ 1657 if ((ret == -ENOBUFS || ret == -EMSGSIZE) && 1658 !skb->len && 1659 cb->min_dump_alloc < 4096) { 1660 cb->min_dump_alloc = 4096; 1661 rtnl_unlock(); 1662 return 1; 1663 } 1664 idx--; 1665 break; 1666 } 1667 } while (state->split_start > 0); 1668 break; 1669 } 1670 rtnl_unlock(); 1671 1672 state->start = idx; 1673 1674 return skb->len; 1675 } 1676 1677 static int nl80211_dump_wiphy_done(struct netlink_callback *cb) 1678 { 1679 kfree((void *)cb->args[0]); 1680 return 0; 1681 } 1682 1683 static int nl80211_get_wiphy(struct sk_buff *skb, struct genl_info *info) 1684 { 1685 struct sk_buff *msg; 1686 struct cfg80211_registered_device *dev = info->user_ptr[0]; 1687 struct nl80211_dump_wiphy_state state = {}; 1688 1689 msg = nlmsg_new(4096, GFP_KERNEL); 1690 if (!msg) 1691 return -ENOMEM; 1692 1693 if (nl80211_send_wiphy(dev, msg, info->snd_portid, info->snd_seq, 0, 1694 &state) < 0) { 1695 nlmsg_free(msg); 1696 return -ENOBUFS; 1697 } 1698 1699 return genlmsg_reply(msg, info); 1700 } 1701 1702 static const struct nla_policy txq_params_policy[NL80211_TXQ_ATTR_MAX + 1] = { 1703 [NL80211_TXQ_ATTR_QUEUE] = { .type = NLA_U8 }, 1704 [NL80211_TXQ_ATTR_TXOP] = { .type = NLA_U16 }, 1705 [NL80211_TXQ_ATTR_CWMIN] = { .type = NLA_U16 }, 1706 [NL80211_TXQ_ATTR_CWMAX] = { .type = NLA_U16 }, 1707 [NL80211_TXQ_ATTR_AIFS] = { .type = NLA_U8 }, 1708 }; 1709 1710 static int parse_txq_params(struct nlattr *tb[], 1711 struct ieee80211_txq_params *txq_params) 1712 { 1713 if (!tb[NL80211_TXQ_ATTR_AC] || !tb[NL80211_TXQ_ATTR_TXOP] || 1714 !tb[NL80211_TXQ_ATTR_CWMIN] || !tb[NL80211_TXQ_ATTR_CWMAX] || 1715 !tb[NL80211_TXQ_ATTR_AIFS]) 1716 return -EINVAL; 1717 1718 txq_params->ac = nla_get_u8(tb[NL80211_TXQ_ATTR_AC]); 1719 txq_params->txop = nla_get_u16(tb[NL80211_TXQ_ATTR_TXOP]); 1720 txq_params->cwmin = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMIN]); 1721 txq_params->cwmax = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMAX]); 1722 txq_params->aifs = nla_get_u8(tb[NL80211_TXQ_ATTR_AIFS]); 1723 1724 if (txq_params->ac >= NL80211_NUM_ACS) 1725 return -EINVAL; 1726 1727 return 0; 1728 } 1729 1730 static bool nl80211_can_set_dev_channel(struct wireless_dev *wdev) 1731 { 1732 /* 1733 * You can only set the channel explicitly for WDS interfaces, 1734 * all others have their channel managed via their respective 1735 * "establish a connection" command (connect, join, ...) 1736 * 1737 * For AP/GO and mesh mode, the channel can be set with the 1738 * channel userspace API, but is only stored and passed to the 1739 * low-level driver when the AP starts or the mesh is joined. 1740 * This is for backward compatibility, userspace can also give 1741 * the channel in the start-ap or join-mesh commands instead. 1742 * 1743 * Monitors are special as they are normally slaved to 1744 * whatever else is going on, so they have their own special 1745 * operation to set the monitor channel if possible. 1746 */ 1747 return !wdev || 1748 wdev->iftype == NL80211_IFTYPE_AP || 1749 wdev->iftype == NL80211_IFTYPE_MESH_POINT || 1750 wdev->iftype == NL80211_IFTYPE_MONITOR || 1751 wdev->iftype == NL80211_IFTYPE_P2P_GO; 1752 } 1753 1754 static int nl80211_parse_chandef(struct cfg80211_registered_device *rdev, 1755 struct genl_info *info, 1756 struct cfg80211_chan_def *chandef) 1757 { 1758 u32 control_freq; 1759 1760 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ]) 1761 return -EINVAL; 1762 1763 control_freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]); 1764 1765 chandef->chan = ieee80211_get_channel(&rdev->wiphy, control_freq); 1766 chandef->width = NL80211_CHAN_WIDTH_20_NOHT; 1767 chandef->center_freq1 = control_freq; 1768 chandef->center_freq2 = 0; 1769 1770 /* Primary channel not allowed */ 1771 if (!chandef->chan || chandef->chan->flags & IEEE80211_CHAN_DISABLED) 1772 return -EINVAL; 1773 1774 if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) { 1775 enum nl80211_channel_type chantype; 1776 1777 chantype = nla_get_u32( 1778 info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]); 1779 1780 switch (chantype) { 1781 case NL80211_CHAN_NO_HT: 1782 case NL80211_CHAN_HT20: 1783 case NL80211_CHAN_HT40PLUS: 1784 case NL80211_CHAN_HT40MINUS: 1785 cfg80211_chandef_create(chandef, chandef->chan, 1786 chantype); 1787 break; 1788 default: 1789 return -EINVAL; 1790 } 1791 } else if (info->attrs[NL80211_ATTR_CHANNEL_WIDTH]) { 1792 chandef->width = 1793 nla_get_u32(info->attrs[NL80211_ATTR_CHANNEL_WIDTH]); 1794 if (info->attrs[NL80211_ATTR_CENTER_FREQ1]) 1795 chandef->center_freq1 = 1796 nla_get_u32( 1797 info->attrs[NL80211_ATTR_CENTER_FREQ1]); 1798 if (info->attrs[NL80211_ATTR_CENTER_FREQ2]) 1799 chandef->center_freq2 = 1800 nla_get_u32( 1801 info->attrs[NL80211_ATTR_CENTER_FREQ2]); 1802 } 1803 1804 if (!cfg80211_chandef_valid(chandef)) 1805 return -EINVAL; 1806 1807 if (!cfg80211_chandef_usable(&rdev->wiphy, chandef, 1808 IEEE80211_CHAN_DISABLED)) 1809 return -EINVAL; 1810 1811 if ((chandef->width == NL80211_CHAN_WIDTH_5 || 1812 chandef->width == NL80211_CHAN_WIDTH_10) && 1813 !(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ)) 1814 return -EINVAL; 1815 1816 return 0; 1817 } 1818 1819 static int __nl80211_set_channel(struct cfg80211_registered_device *rdev, 1820 struct wireless_dev *wdev, 1821 struct genl_info *info) 1822 { 1823 struct cfg80211_chan_def chandef; 1824 int result; 1825 enum nl80211_iftype iftype = NL80211_IFTYPE_MONITOR; 1826 1827 if (wdev) 1828 iftype = wdev->iftype; 1829 1830 if (!nl80211_can_set_dev_channel(wdev)) 1831 return -EOPNOTSUPP; 1832 1833 result = nl80211_parse_chandef(rdev, info, &chandef); 1834 if (result) 1835 return result; 1836 1837 switch (iftype) { 1838 case NL80211_IFTYPE_AP: 1839 case NL80211_IFTYPE_P2P_GO: 1840 if (wdev->beacon_interval) { 1841 result = -EBUSY; 1842 break; 1843 } 1844 if (!cfg80211_reg_can_beacon(&rdev->wiphy, &chandef)) { 1845 result = -EINVAL; 1846 break; 1847 } 1848 wdev->preset_chandef = chandef; 1849 result = 0; 1850 break; 1851 case NL80211_IFTYPE_MESH_POINT: 1852 result = cfg80211_set_mesh_channel(rdev, wdev, &chandef); 1853 break; 1854 case NL80211_IFTYPE_MONITOR: 1855 result = cfg80211_set_monitor_channel(rdev, &chandef); 1856 break; 1857 default: 1858 result = -EINVAL; 1859 } 1860 1861 return result; 1862 } 1863 1864 static int nl80211_set_channel(struct sk_buff *skb, struct genl_info *info) 1865 { 1866 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 1867 struct net_device *netdev = info->user_ptr[1]; 1868 1869 return __nl80211_set_channel(rdev, netdev->ieee80211_ptr, info); 1870 } 1871 1872 static int nl80211_set_wds_peer(struct sk_buff *skb, struct genl_info *info) 1873 { 1874 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 1875 struct net_device *dev = info->user_ptr[1]; 1876 struct wireless_dev *wdev = dev->ieee80211_ptr; 1877 const u8 *bssid; 1878 1879 if (!info->attrs[NL80211_ATTR_MAC]) 1880 return -EINVAL; 1881 1882 if (netif_running(dev)) 1883 return -EBUSY; 1884 1885 if (!rdev->ops->set_wds_peer) 1886 return -EOPNOTSUPP; 1887 1888 if (wdev->iftype != NL80211_IFTYPE_WDS) 1889 return -EOPNOTSUPP; 1890 1891 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]); 1892 return rdev_set_wds_peer(rdev, dev, bssid); 1893 } 1894 1895 1896 static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info) 1897 { 1898 struct cfg80211_registered_device *rdev; 1899 struct net_device *netdev = NULL; 1900 struct wireless_dev *wdev; 1901 int result = 0, rem_txq_params = 0; 1902 struct nlattr *nl_txq_params; 1903 u32 changed; 1904 u8 retry_short = 0, retry_long = 0; 1905 u32 frag_threshold = 0, rts_threshold = 0; 1906 u8 coverage_class = 0; 1907 1908 ASSERT_RTNL(); 1909 1910 /* 1911 * Try to find the wiphy and netdev. Normally this 1912 * function shouldn't need the netdev, but this is 1913 * done for backward compatibility -- previously 1914 * setting the channel was done per wiphy, but now 1915 * it is per netdev. Previous userland like hostapd 1916 * also passed a netdev to set_wiphy, so that it is 1917 * possible to let that go to the right netdev! 1918 */ 1919 1920 if (info->attrs[NL80211_ATTR_IFINDEX]) { 1921 int ifindex = nla_get_u32(info->attrs[NL80211_ATTR_IFINDEX]); 1922 1923 netdev = dev_get_by_index(genl_info_net(info), ifindex); 1924 if (netdev && netdev->ieee80211_ptr) 1925 rdev = wiphy_to_dev(netdev->ieee80211_ptr->wiphy); 1926 else 1927 netdev = NULL; 1928 } 1929 1930 if (!netdev) { 1931 rdev = __cfg80211_rdev_from_attrs(genl_info_net(info), 1932 info->attrs); 1933 if (IS_ERR(rdev)) 1934 return PTR_ERR(rdev); 1935 wdev = NULL; 1936 netdev = NULL; 1937 result = 0; 1938 } else 1939 wdev = netdev->ieee80211_ptr; 1940 1941 /* 1942 * end workaround code, by now the rdev is available 1943 * and locked, and wdev may or may not be NULL. 1944 */ 1945 1946 if (info->attrs[NL80211_ATTR_WIPHY_NAME]) 1947 result = cfg80211_dev_rename( 1948 rdev, nla_data(info->attrs[NL80211_ATTR_WIPHY_NAME])); 1949 1950 if (result) 1951 goto bad_res; 1952 1953 if (info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS]) { 1954 struct ieee80211_txq_params txq_params; 1955 struct nlattr *tb[NL80211_TXQ_ATTR_MAX + 1]; 1956 1957 if (!rdev->ops->set_txq_params) { 1958 result = -EOPNOTSUPP; 1959 goto bad_res; 1960 } 1961 1962 if (!netdev) { 1963 result = -EINVAL; 1964 goto bad_res; 1965 } 1966 1967 if (netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP && 1968 netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) { 1969 result = -EINVAL; 1970 goto bad_res; 1971 } 1972 1973 if (!netif_running(netdev)) { 1974 result = -ENETDOWN; 1975 goto bad_res; 1976 } 1977 1978 nla_for_each_nested(nl_txq_params, 1979 info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS], 1980 rem_txq_params) { 1981 nla_parse(tb, NL80211_TXQ_ATTR_MAX, 1982 nla_data(nl_txq_params), 1983 nla_len(nl_txq_params), 1984 txq_params_policy); 1985 result = parse_txq_params(tb, &txq_params); 1986 if (result) 1987 goto bad_res; 1988 1989 result = rdev_set_txq_params(rdev, netdev, 1990 &txq_params); 1991 if (result) 1992 goto bad_res; 1993 } 1994 } 1995 1996 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) { 1997 result = __nl80211_set_channel(rdev, 1998 nl80211_can_set_dev_channel(wdev) ? wdev : NULL, 1999 info); 2000 if (result) 2001 goto bad_res; 2002 } 2003 2004 if (info->attrs[NL80211_ATTR_WIPHY_TX_POWER_SETTING]) { 2005 struct wireless_dev *txp_wdev = wdev; 2006 enum nl80211_tx_power_setting type; 2007 int idx, mbm = 0; 2008 2009 if (!(rdev->wiphy.features & NL80211_FEATURE_VIF_TXPOWER)) 2010 txp_wdev = NULL; 2011 2012 if (!rdev->ops->set_tx_power) { 2013 result = -EOPNOTSUPP; 2014 goto bad_res; 2015 } 2016 2017 idx = NL80211_ATTR_WIPHY_TX_POWER_SETTING; 2018 type = nla_get_u32(info->attrs[idx]); 2019 2020 if (!info->attrs[NL80211_ATTR_WIPHY_TX_POWER_LEVEL] && 2021 (type != NL80211_TX_POWER_AUTOMATIC)) { 2022 result = -EINVAL; 2023 goto bad_res; 2024 } 2025 2026 if (type != NL80211_TX_POWER_AUTOMATIC) { 2027 idx = NL80211_ATTR_WIPHY_TX_POWER_LEVEL; 2028 mbm = nla_get_u32(info->attrs[idx]); 2029 } 2030 2031 result = rdev_set_tx_power(rdev, txp_wdev, type, mbm); 2032 if (result) 2033 goto bad_res; 2034 } 2035 2036 if (info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX] && 2037 info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]) { 2038 u32 tx_ant, rx_ant; 2039 if ((!rdev->wiphy.available_antennas_tx && 2040 !rdev->wiphy.available_antennas_rx) || 2041 !rdev->ops->set_antenna) { 2042 result = -EOPNOTSUPP; 2043 goto bad_res; 2044 } 2045 2046 tx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX]); 2047 rx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]); 2048 2049 /* reject antenna configurations which don't match the 2050 * available antenna masks, except for the "all" mask */ 2051 if ((~tx_ant && (tx_ant & ~rdev->wiphy.available_antennas_tx)) || 2052 (~rx_ant && (rx_ant & ~rdev->wiphy.available_antennas_rx))) { 2053 result = -EINVAL; 2054 goto bad_res; 2055 } 2056 2057 tx_ant = tx_ant & rdev->wiphy.available_antennas_tx; 2058 rx_ant = rx_ant & rdev->wiphy.available_antennas_rx; 2059 2060 result = rdev_set_antenna(rdev, tx_ant, rx_ant); 2061 if (result) 2062 goto bad_res; 2063 } 2064 2065 changed = 0; 2066 2067 if (info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]) { 2068 retry_short = nla_get_u8( 2069 info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]); 2070 if (retry_short == 0) { 2071 result = -EINVAL; 2072 goto bad_res; 2073 } 2074 changed |= WIPHY_PARAM_RETRY_SHORT; 2075 } 2076 2077 if (info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]) { 2078 retry_long = nla_get_u8( 2079 info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]); 2080 if (retry_long == 0) { 2081 result = -EINVAL; 2082 goto bad_res; 2083 } 2084 changed |= WIPHY_PARAM_RETRY_LONG; 2085 } 2086 2087 if (info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]) { 2088 frag_threshold = nla_get_u32( 2089 info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]); 2090 if (frag_threshold < 256) { 2091 result = -EINVAL; 2092 goto bad_res; 2093 } 2094 if (frag_threshold != (u32) -1) { 2095 /* 2096 * Fragments (apart from the last one) are required to 2097 * have even length. Make the fragmentation code 2098 * simpler by stripping LSB should someone try to use 2099 * odd threshold value. 2100 */ 2101 frag_threshold &= ~0x1; 2102 } 2103 changed |= WIPHY_PARAM_FRAG_THRESHOLD; 2104 } 2105 2106 if (info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]) { 2107 rts_threshold = nla_get_u32( 2108 info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]); 2109 changed |= WIPHY_PARAM_RTS_THRESHOLD; 2110 } 2111 2112 if (info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]) { 2113 coverage_class = nla_get_u8( 2114 info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]); 2115 changed |= WIPHY_PARAM_COVERAGE_CLASS; 2116 } 2117 2118 if (changed) { 2119 u8 old_retry_short, old_retry_long; 2120 u32 old_frag_threshold, old_rts_threshold; 2121 u8 old_coverage_class; 2122 2123 if (!rdev->ops->set_wiphy_params) { 2124 result = -EOPNOTSUPP; 2125 goto bad_res; 2126 } 2127 2128 old_retry_short = rdev->wiphy.retry_short; 2129 old_retry_long = rdev->wiphy.retry_long; 2130 old_frag_threshold = rdev->wiphy.frag_threshold; 2131 old_rts_threshold = rdev->wiphy.rts_threshold; 2132 old_coverage_class = rdev->wiphy.coverage_class; 2133 2134 if (changed & WIPHY_PARAM_RETRY_SHORT) 2135 rdev->wiphy.retry_short = retry_short; 2136 if (changed & WIPHY_PARAM_RETRY_LONG) 2137 rdev->wiphy.retry_long = retry_long; 2138 if (changed & WIPHY_PARAM_FRAG_THRESHOLD) 2139 rdev->wiphy.frag_threshold = frag_threshold; 2140 if (changed & WIPHY_PARAM_RTS_THRESHOLD) 2141 rdev->wiphy.rts_threshold = rts_threshold; 2142 if (changed & WIPHY_PARAM_COVERAGE_CLASS) 2143 rdev->wiphy.coverage_class = coverage_class; 2144 2145 result = rdev_set_wiphy_params(rdev, changed); 2146 if (result) { 2147 rdev->wiphy.retry_short = old_retry_short; 2148 rdev->wiphy.retry_long = old_retry_long; 2149 rdev->wiphy.frag_threshold = old_frag_threshold; 2150 rdev->wiphy.rts_threshold = old_rts_threshold; 2151 rdev->wiphy.coverage_class = old_coverage_class; 2152 } 2153 } 2154 2155 bad_res: 2156 if (netdev) 2157 dev_put(netdev); 2158 return result; 2159 } 2160 2161 static inline u64 wdev_id(struct wireless_dev *wdev) 2162 { 2163 return (u64)wdev->identifier | 2164 ((u64)wiphy_to_dev(wdev->wiphy)->wiphy_idx << 32); 2165 } 2166 2167 static int nl80211_send_chandef(struct sk_buff *msg, 2168 struct cfg80211_chan_def *chandef) 2169 { 2170 WARN_ON(!cfg80211_chandef_valid(chandef)); 2171 2172 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, 2173 chandef->chan->center_freq)) 2174 return -ENOBUFS; 2175 switch (chandef->width) { 2176 case NL80211_CHAN_WIDTH_20_NOHT: 2177 case NL80211_CHAN_WIDTH_20: 2178 case NL80211_CHAN_WIDTH_40: 2179 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE, 2180 cfg80211_get_chandef_type(chandef))) 2181 return -ENOBUFS; 2182 break; 2183 default: 2184 break; 2185 } 2186 if (nla_put_u32(msg, NL80211_ATTR_CHANNEL_WIDTH, chandef->width)) 2187 return -ENOBUFS; 2188 if (nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ1, chandef->center_freq1)) 2189 return -ENOBUFS; 2190 if (chandef->center_freq2 && 2191 nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ2, chandef->center_freq2)) 2192 return -ENOBUFS; 2193 return 0; 2194 } 2195 2196 static int nl80211_send_iface(struct sk_buff *msg, u32 portid, u32 seq, int flags, 2197 struct cfg80211_registered_device *rdev, 2198 struct wireless_dev *wdev) 2199 { 2200 struct net_device *dev = wdev->netdev; 2201 void *hdr; 2202 2203 hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_INTERFACE); 2204 if (!hdr) 2205 return -1; 2206 2207 if (dev && 2208 (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) || 2209 nla_put_string(msg, NL80211_ATTR_IFNAME, dev->name))) 2210 goto nla_put_failure; 2211 2212 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 2213 nla_put_u32(msg, NL80211_ATTR_IFTYPE, wdev->iftype) || 2214 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) || 2215 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, wdev_address(wdev)) || 2216 nla_put_u32(msg, NL80211_ATTR_GENERATION, 2217 rdev->devlist_generation ^ 2218 (cfg80211_rdev_list_generation << 2))) 2219 goto nla_put_failure; 2220 2221 if (rdev->ops->get_channel) { 2222 int ret; 2223 struct cfg80211_chan_def chandef; 2224 2225 ret = rdev_get_channel(rdev, wdev, &chandef); 2226 if (ret == 0) { 2227 if (nl80211_send_chandef(msg, &chandef)) 2228 goto nla_put_failure; 2229 } 2230 } 2231 2232 if (wdev->ssid_len) { 2233 if (nla_put(msg, NL80211_ATTR_SSID, wdev->ssid_len, wdev->ssid)) 2234 goto nla_put_failure; 2235 } 2236 2237 return genlmsg_end(msg, hdr); 2238 2239 nla_put_failure: 2240 genlmsg_cancel(msg, hdr); 2241 return -EMSGSIZE; 2242 } 2243 2244 static int nl80211_dump_interface(struct sk_buff *skb, struct netlink_callback *cb) 2245 { 2246 int wp_idx = 0; 2247 int if_idx = 0; 2248 int wp_start = cb->args[0]; 2249 int if_start = cb->args[1]; 2250 struct cfg80211_registered_device *rdev; 2251 struct wireless_dev *wdev; 2252 2253 rtnl_lock(); 2254 list_for_each_entry(rdev, &cfg80211_rdev_list, list) { 2255 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk))) 2256 continue; 2257 if (wp_idx < wp_start) { 2258 wp_idx++; 2259 continue; 2260 } 2261 if_idx = 0; 2262 2263 list_for_each_entry(wdev, &rdev->wdev_list, list) { 2264 if (if_idx < if_start) { 2265 if_idx++; 2266 continue; 2267 } 2268 if (nl80211_send_iface(skb, NETLINK_CB(cb->skb).portid, 2269 cb->nlh->nlmsg_seq, NLM_F_MULTI, 2270 rdev, wdev) < 0) { 2271 goto out; 2272 } 2273 if_idx++; 2274 } 2275 2276 wp_idx++; 2277 } 2278 out: 2279 rtnl_unlock(); 2280 2281 cb->args[0] = wp_idx; 2282 cb->args[1] = if_idx; 2283 2284 return skb->len; 2285 } 2286 2287 static int nl80211_get_interface(struct sk_buff *skb, struct genl_info *info) 2288 { 2289 struct sk_buff *msg; 2290 struct cfg80211_registered_device *dev = info->user_ptr[0]; 2291 struct wireless_dev *wdev = info->user_ptr[1]; 2292 2293 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 2294 if (!msg) 2295 return -ENOMEM; 2296 2297 if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0, 2298 dev, wdev) < 0) { 2299 nlmsg_free(msg); 2300 return -ENOBUFS; 2301 } 2302 2303 return genlmsg_reply(msg, info); 2304 } 2305 2306 static const struct nla_policy mntr_flags_policy[NL80211_MNTR_FLAG_MAX + 1] = { 2307 [NL80211_MNTR_FLAG_FCSFAIL] = { .type = NLA_FLAG }, 2308 [NL80211_MNTR_FLAG_PLCPFAIL] = { .type = NLA_FLAG }, 2309 [NL80211_MNTR_FLAG_CONTROL] = { .type = NLA_FLAG }, 2310 [NL80211_MNTR_FLAG_OTHER_BSS] = { .type = NLA_FLAG }, 2311 [NL80211_MNTR_FLAG_COOK_FRAMES] = { .type = NLA_FLAG }, 2312 [NL80211_MNTR_FLAG_ACTIVE] = { .type = NLA_FLAG }, 2313 }; 2314 2315 static int parse_monitor_flags(struct nlattr *nla, u32 *mntrflags) 2316 { 2317 struct nlattr *flags[NL80211_MNTR_FLAG_MAX + 1]; 2318 int flag; 2319 2320 *mntrflags = 0; 2321 2322 if (!nla) 2323 return -EINVAL; 2324 2325 if (nla_parse_nested(flags, NL80211_MNTR_FLAG_MAX, 2326 nla, mntr_flags_policy)) 2327 return -EINVAL; 2328 2329 for (flag = 1; flag <= NL80211_MNTR_FLAG_MAX; flag++) 2330 if (flags[flag]) 2331 *mntrflags |= (1<<flag); 2332 2333 return 0; 2334 } 2335 2336 static int nl80211_valid_4addr(struct cfg80211_registered_device *rdev, 2337 struct net_device *netdev, u8 use_4addr, 2338 enum nl80211_iftype iftype) 2339 { 2340 if (!use_4addr) { 2341 if (netdev && (netdev->priv_flags & IFF_BRIDGE_PORT)) 2342 return -EBUSY; 2343 return 0; 2344 } 2345 2346 switch (iftype) { 2347 case NL80211_IFTYPE_AP_VLAN: 2348 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_AP) 2349 return 0; 2350 break; 2351 case NL80211_IFTYPE_STATION: 2352 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_STATION) 2353 return 0; 2354 break; 2355 default: 2356 break; 2357 } 2358 2359 return -EOPNOTSUPP; 2360 } 2361 2362 static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info) 2363 { 2364 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 2365 struct vif_params params; 2366 int err; 2367 enum nl80211_iftype otype, ntype; 2368 struct net_device *dev = info->user_ptr[1]; 2369 u32 _flags, *flags = NULL; 2370 bool change = false; 2371 2372 memset(¶ms, 0, sizeof(params)); 2373 2374 otype = ntype = dev->ieee80211_ptr->iftype; 2375 2376 if (info->attrs[NL80211_ATTR_IFTYPE]) { 2377 ntype = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]); 2378 if (otype != ntype) 2379 change = true; 2380 if (ntype > NL80211_IFTYPE_MAX) 2381 return -EINVAL; 2382 } 2383 2384 if (info->attrs[NL80211_ATTR_MESH_ID]) { 2385 struct wireless_dev *wdev = dev->ieee80211_ptr; 2386 2387 if (ntype != NL80211_IFTYPE_MESH_POINT) 2388 return -EINVAL; 2389 if (netif_running(dev)) 2390 return -EBUSY; 2391 2392 wdev_lock(wdev); 2393 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN != 2394 IEEE80211_MAX_MESH_ID_LEN); 2395 wdev->mesh_id_up_len = 2396 nla_len(info->attrs[NL80211_ATTR_MESH_ID]); 2397 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]), 2398 wdev->mesh_id_up_len); 2399 wdev_unlock(wdev); 2400 } 2401 2402 if (info->attrs[NL80211_ATTR_4ADDR]) { 2403 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]); 2404 change = true; 2405 err = nl80211_valid_4addr(rdev, dev, params.use_4addr, ntype); 2406 if (err) 2407 return err; 2408 } else { 2409 params.use_4addr = -1; 2410 } 2411 2412 if (info->attrs[NL80211_ATTR_MNTR_FLAGS]) { 2413 if (ntype != NL80211_IFTYPE_MONITOR) 2414 return -EINVAL; 2415 err = parse_monitor_flags(info->attrs[NL80211_ATTR_MNTR_FLAGS], 2416 &_flags); 2417 if (err) 2418 return err; 2419 2420 flags = &_flags; 2421 change = true; 2422 } 2423 2424 if (flags && (*flags & NL80211_MNTR_FLAG_ACTIVE) && 2425 !(rdev->wiphy.features & NL80211_FEATURE_ACTIVE_MONITOR)) 2426 return -EOPNOTSUPP; 2427 2428 if (change) 2429 err = cfg80211_change_iface(rdev, dev, ntype, flags, ¶ms); 2430 else 2431 err = 0; 2432 2433 if (!err && params.use_4addr != -1) 2434 dev->ieee80211_ptr->use_4addr = params.use_4addr; 2435 2436 return err; 2437 } 2438 2439 static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info) 2440 { 2441 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 2442 struct vif_params params; 2443 struct wireless_dev *wdev; 2444 struct sk_buff *msg; 2445 int err; 2446 enum nl80211_iftype type = NL80211_IFTYPE_UNSPECIFIED; 2447 u32 flags; 2448 2449 memset(¶ms, 0, sizeof(params)); 2450 2451 if (!info->attrs[NL80211_ATTR_IFNAME]) 2452 return -EINVAL; 2453 2454 if (info->attrs[NL80211_ATTR_IFTYPE]) { 2455 type = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]); 2456 if (type > NL80211_IFTYPE_MAX) 2457 return -EINVAL; 2458 } 2459 2460 if (!rdev->ops->add_virtual_intf || 2461 !(rdev->wiphy.interface_modes & (1 << type))) 2462 return -EOPNOTSUPP; 2463 2464 if (type == NL80211_IFTYPE_P2P_DEVICE && info->attrs[NL80211_ATTR_MAC]) { 2465 nla_memcpy(params.macaddr, info->attrs[NL80211_ATTR_MAC], 2466 ETH_ALEN); 2467 if (!is_valid_ether_addr(params.macaddr)) 2468 return -EADDRNOTAVAIL; 2469 } 2470 2471 if (info->attrs[NL80211_ATTR_4ADDR]) { 2472 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]); 2473 err = nl80211_valid_4addr(rdev, NULL, params.use_4addr, type); 2474 if (err) 2475 return err; 2476 } 2477 2478 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 2479 if (!msg) 2480 return -ENOMEM; 2481 2482 err = parse_monitor_flags(type == NL80211_IFTYPE_MONITOR ? 2483 info->attrs[NL80211_ATTR_MNTR_FLAGS] : NULL, 2484 &flags); 2485 2486 if (!err && (flags & NL80211_MNTR_FLAG_ACTIVE) && 2487 !(rdev->wiphy.features & NL80211_FEATURE_ACTIVE_MONITOR)) 2488 return -EOPNOTSUPP; 2489 2490 wdev = rdev_add_virtual_intf(rdev, 2491 nla_data(info->attrs[NL80211_ATTR_IFNAME]), 2492 type, err ? NULL : &flags, ¶ms); 2493 if (IS_ERR(wdev)) { 2494 nlmsg_free(msg); 2495 return PTR_ERR(wdev); 2496 } 2497 2498 switch (type) { 2499 case NL80211_IFTYPE_MESH_POINT: 2500 if (!info->attrs[NL80211_ATTR_MESH_ID]) 2501 break; 2502 wdev_lock(wdev); 2503 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN != 2504 IEEE80211_MAX_MESH_ID_LEN); 2505 wdev->mesh_id_up_len = 2506 nla_len(info->attrs[NL80211_ATTR_MESH_ID]); 2507 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]), 2508 wdev->mesh_id_up_len); 2509 wdev_unlock(wdev); 2510 break; 2511 case NL80211_IFTYPE_P2P_DEVICE: 2512 /* 2513 * P2P Device doesn't have a netdev, so doesn't go 2514 * through the netdev notifier and must be added here 2515 */ 2516 mutex_init(&wdev->mtx); 2517 INIT_LIST_HEAD(&wdev->event_list); 2518 spin_lock_init(&wdev->event_lock); 2519 INIT_LIST_HEAD(&wdev->mgmt_registrations); 2520 spin_lock_init(&wdev->mgmt_registrations_lock); 2521 2522 wdev->identifier = ++rdev->wdev_id; 2523 list_add_rcu(&wdev->list, &rdev->wdev_list); 2524 rdev->devlist_generation++; 2525 break; 2526 default: 2527 break; 2528 } 2529 2530 if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0, 2531 rdev, wdev) < 0) { 2532 nlmsg_free(msg); 2533 return -ENOBUFS; 2534 } 2535 2536 return genlmsg_reply(msg, info); 2537 } 2538 2539 static int nl80211_del_interface(struct sk_buff *skb, struct genl_info *info) 2540 { 2541 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 2542 struct wireless_dev *wdev = info->user_ptr[1]; 2543 2544 if (!rdev->ops->del_virtual_intf) 2545 return -EOPNOTSUPP; 2546 2547 /* 2548 * If we remove a wireless device without a netdev then clear 2549 * user_ptr[1] so that nl80211_post_doit won't dereference it 2550 * to check if it needs to do dev_put(). Otherwise it crashes 2551 * since the wdev has been freed, unlike with a netdev where 2552 * we need the dev_put() for the netdev to really be freed. 2553 */ 2554 if (!wdev->netdev) 2555 info->user_ptr[1] = NULL; 2556 2557 return rdev_del_virtual_intf(rdev, wdev); 2558 } 2559 2560 static int nl80211_set_noack_map(struct sk_buff *skb, struct genl_info *info) 2561 { 2562 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 2563 struct net_device *dev = info->user_ptr[1]; 2564 u16 noack_map; 2565 2566 if (!info->attrs[NL80211_ATTR_NOACK_MAP]) 2567 return -EINVAL; 2568 2569 if (!rdev->ops->set_noack_map) 2570 return -EOPNOTSUPP; 2571 2572 noack_map = nla_get_u16(info->attrs[NL80211_ATTR_NOACK_MAP]); 2573 2574 return rdev_set_noack_map(rdev, dev, noack_map); 2575 } 2576 2577 struct get_key_cookie { 2578 struct sk_buff *msg; 2579 int error; 2580 int idx; 2581 }; 2582 2583 static void get_key_callback(void *c, struct key_params *params) 2584 { 2585 struct nlattr *key; 2586 struct get_key_cookie *cookie = c; 2587 2588 if ((params->key && 2589 nla_put(cookie->msg, NL80211_ATTR_KEY_DATA, 2590 params->key_len, params->key)) || 2591 (params->seq && 2592 nla_put(cookie->msg, NL80211_ATTR_KEY_SEQ, 2593 params->seq_len, params->seq)) || 2594 (params->cipher && 2595 nla_put_u32(cookie->msg, NL80211_ATTR_KEY_CIPHER, 2596 params->cipher))) 2597 goto nla_put_failure; 2598 2599 key = nla_nest_start(cookie->msg, NL80211_ATTR_KEY); 2600 if (!key) 2601 goto nla_put_failure; 2602 2603 if ((params->key && 2604 nla_put(cookie->msg, NL80211_KEY_DATA, 2605 params->key_len, params->key)) || 2606 (params->seq && 2607 nla_put(cookie->msg, NL80211_KEY_SEQ, 2608 params->seq_len, params->seq)) || 2609 (params->cipher && 2610 nla_put_u32(cookie->msg, NL80211_KEY_CIPHER, 2611 params->cipher))) 2612 goto nla_put_failure; 2613 2614 if (nla_put_u8(cookie->msg, NL80211_ATTR_KEY_IDX, cookie->idx)) 2615 goto nla_put_failure; 2616 2617 nla_nest_end(cookie->msg, key); 2618 2619 return; 2620 nla_put_failure: 2621 cookie->error = 1; 2622 } 2623 2624 static int nl80211_get_key(struct sk_buff *skb, struct genl_info *info) 2625 { 2626 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 2627 int err; 2628 struct net_device *dev = info->user_ptr[1]; 2629 u8 key_idx = 0; 2630 const u8 *mac_addr = NULL; 2631 bool pairwise; 2632 struct get_key_cookie cookie = { 2633 .error = 0, 2634 }; 2635 void *hdr; 2636 struct sk_buff *msg; 2637 2638 if (info->attrs[NL80211_ATTR_KEY_IDX]) 2639 key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]); 2640 2641 if (key_idx > 5) 2642 return -EINVAL; 2643 2644 if (info->attrs[NL80211_ATTR_MAC]) 2645 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]); 2646 2647 pairwise = !!mac_addr; 2648 if (info->attrs[NL80211_ATTR_KEY_TYPE]) { 2649 u32 kt = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]); 2650 if (kt >= NUM_NL80211_KEYTYPES) 2651 return -EINVAL; 2652 if (kt != NL80211_KEYTYPE_GROUP && 2653 kt != NL80211_KEYTYPE_PAIRWISE) 2654 return -EINVAL; 2655 pairwise = kt == NL80211_KEYTYPE_PAIRWISE; 2656 } 2657 2658 if (!rdev->ops->get_key) 2659 return -EOPNOTSUPP; 2660 2661 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 2662 if (!msg) 2663 return -ENOMEM; 2664 2665 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0, 2666 NL80211_CMD_NEW_KEY); 2667 if (!hdr) 2668 return -ENOBUFS; 2669 2670 cookie.msg = msg; 2671 cookie.idx = key_idx; 2672 2673 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) || 2674 nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_idx)) 2675 goto nla_put_failure; 2676 if (mac_addr && 2677 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr)) 2678 goto nla_put_failure; 2679 2680 if (pairwise && mac_addr && 2681 !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN)) 2682 return -ENOENT; 2683 2684 err = rdev_get_key(rdev, dev, key_idx, pairwise, mac_addr, &cookie, 2685 get_key_callback); 2686 2687 if (err) 2688 goto free_msg; 2689 2690 if (cookie.error) 2691 goto nla_put_failure; 2692 2693 genlmsg_end(msg, hdr); 2694 return genlmsg_reply(msg, info); 2695 2696 nla_put_failure: 2697 err = -ENOBUFS; 2698 free_msg: 2699 nlmsg_free(msg); 2700 return err; 2701 } 2702 2703 static int nl80211_set_key(struct sk_buff *skb, struct genl_info *info) 2704 { 2705 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 2706 struct key_parse key; 2707 int err; 2708 struct net_device *dev = info->user_ptr[1]; 2709 2710 err = nl80211_parse_key(info, &key); 2711 if (err) 2712 return err; 2713 2714 if (key.idx < 0) 2715 return -EINVAL; 2716 2717 /* only support setting default key */ 2718 if (!key.def && !key.defmgmt) 2719 return -EINVAL; 2720 2721 wdev_lock(dev->ieee80211_ptr); 2722 2723 if (key.def) { 2724 if (!rdev->ops->set_default_key) { 2725 err = -EOPNOTSUPP; 2726 goto out; 2727 } 2728 2729 err = nl80211_key_allowed(dev->ieee80211_ptr); 2730 if (err) 2731 goto out; 2732 2733 err = rdev_set_default_key(rdev, dev, key.idx, 2734 key.def_uni, key.def_multi); 2735 2736 if (err) 2737 goto out; 2738 2739 #ifdef CONFIG_CFG80211_WEXT 2740 dev->ieee80211_ptr->wext.default_key = key.idx; 2741 #endif 2742 } else { 2743 if (key.def_uni || !key.def_multi) { 2744 err = -EINVAL; 2745 goto out; 2746 } 2747 2748 if (!rdev->ops->set_default_mgmt_key) { 2749 err = -EOPNOTSUPP; 2750 goto out; 2751 } 2752 2753 err = nl80211_key_allowed(dev->ieee80211_ptr); 2754 if (err) 2755 goto out; 2756 2757 err = rdev_set_default_mgmt_key(rdev, dev, key.idx); 2758 if (err) 2759 goto out; 2760 2761 #ifdef CONFIG_CFG80211_WEXT 2762 dev->ieee80211_ptr->wext.default_mgmt_key = key.idx; 2763 #endif 2764 } 2765 2766 out: 2767 wdev_unlock(dev->ieee80211_ptr); 2768 2769 return err; 2770 } 2771 2772 static int nl80211_new_key(struct sk_buff *skb, struct genl_info *info) 2773 { 2774 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 2775 int err; 2776 struct net_device *dev = info->user_ptr[1]; 2777 struct key_parse key; 2778 const u8 *mac_addr = NULL; 2779 2780 err = nl80211_parse_key(info, &key); 2781 if (err) 2782 return err; 2783 2784 if (!key.p.key) 2785 return -EINVAL; 2786 2787 if (info->attrs[NL80211_ATTR_MAC]) 2788 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]); 2789 2790 if (key.type == -1) { 2791 if (mac_addr) 2792 key.type = NL80211_KEYTYPE_PAIRWISE; 2793 else 2794 key.type = NL80211_KEYTYPE_GROUP; 2795 } 2796 2797 /* for now */ 2798 if (key.type != NL80211_KEYTYPE_PAIRWISE && 2799 key.type != NL80211_KEYTYPE_GROUP) 2800 return -EINVAL; 2801 2802 if (!rdev->ops->add_key) 2803 return -EOPNOTSUPP; 2804 2805 if (cfg80211_validate_key_settings(rdev, &key.p, key.idx, 2806 key.type == NL80211_KEYTYPE_PAIRWISE, 2807 mac_addr)) 2808 return -EINVAL; 2809 2810 wdev_lock(dev->ieee80211_ptr); 2811 err = nl80211_key_allowed(dev->ieee80211_ptr); 2812 if (!err) 2813 err = rdev_add_key(rdev, dev, key.idx, 2814 key.type == NL80211_KEYTYPE_PAIRWISE, 2815 mac_addr, &key.p); 2816 wdev_unlock(dev->ieee80211_ptr); 2817 2818 return err; 2819 } 2820 2821 static int nl80211_del_key(struct sk_buff *skb, struct genl_info *info) 2822 { 2823 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 2824 int err; 2825 struct net_device *dev = info->user_ptr[1]; 2826 u8 *mac_addr = NULL; 2827 struct key_parse key; 2828 2829 err = nl80211_parse_key(info, &key); 2830 if (err) 2831 return err; 2832 2833 if (info->attrs[NL80211_ATTR_MAC]) 2834 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]); 2835 2836 if (key.type == -1) { 2837 if (mac_addr) 2838 key.type = NL80211_KEYTYPE_PAIRWISE; 2839 else 2840 key.type = NL80211_KEYTYPE_GROUP; 2841 } 2842 2843 /* for now */ 2844 if (key.type != NL80211_KEYTYPE_PAIRWISE && 2845 key.type != NL80211_KEYTYPE_GROUP) 2846 return -EINVAL; 2847 2848 if (!rdev->ops->del_key) 2849 return -EOPNOTSUPP; 2850 2851 wdev_lock(dev->ieee80211_ptr); 2852 err = nl80211_key_allowed(dev->ieee80211_ptr); 2853 2854 if (key.type == NL80211_KEYTYPE_PAIRWISE && mac_addr && 2855 !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN)) 2856 err = -ENOENT; 2857 2858 if (!err) 2859 err = rdev_del_key(rdev, dev, key.idx, 2860 key.type == NL80211_KEYTYPE_PAIRWISE, 2861 mac_addr); 2862 2863 #ifdef CONFIG_CFG80211_WEXT 2864 if (!err) { 2865 if (key.idx == dev->ieee80211_ptr->wext.default_key) 2866 dev->ieee80211_ptr->wext.default_key = -1; 2867 else if (key.idx == dev->ieee80211_ptr->wext.default_mgmt_key) 2868 dev->ieee80211_ptr->wext.default_mgmt_key = -1; 2869 } 2870 #endif 2871 wdev_unlock(dev->ieee80211_ptr); 2872 2873 return err; 2874 } 2875 2876 /* This function returns an error or the number of nested attributes */ 2877 static int validate_acl_mac_addrs(struct nlattr *nl_attr) 2878 { 2879 struct nlattr *attr; 2880 int n_entries = 0, tmp; 2881 2882 nla_for_each_nested(attr, nl_attr, tmp) { 2883 if (nla_len(attr) != ETH_ALEN) 2884 return -EINVAL; 2885 2886 n_entries++; 2887 } 2888 2889 return n_entries; 2890 } 2891 2892 /* 2893 * This function parses ACL information and allocates memory for ACL data. 2894 * On successful return, the calling function is responsible to free the 2895 * ACL buffer returned by this function. 2896 */ 2897 static struct cfg80211_acl_data *parse_acl_data(struct wiphy *wiphy, 2898 struct genl_info *info) 2899 { 2900 enum nl80211_acl_policy acl_policy; 2901 struct nlattr *attr; 2902 struct cfg80211_acl_data *acl; 2903 int i = 0, n_entries, tmp; 2904 2905 if (!wiphy->max_acl_mac_addrs) 2906 return ERR_PTR(-EOPNOTSUPP); 2907 2908 if (!info->attrs[NL80211_ATTR_ACL_POLICY]) 2909 return ERR_PTR(-EINVAL); 2910 2911 acl_policy = nla_get_u32(info->attrs[NL80211_ATTR_ACL_POLICY]); 2912 if (acl_policy != NL80211_ACL_POLICY_ACCEPT_UNLESS_LISTED && 2913 acl_policy != NL80211_ACL_POLICY_DENY_UNLESS_LISTED) 2914 return ERR_PTR(-EINVAL); 2915 2916 if (!info->attrs[NL80211_ATTR_MAC_ADDRS]) 2917 return ERR_PTR(-EINVAL); 2918 2919 n_entries = validate_acl_mac_addrs(info->attrs[NL80211_ATTR_MAC_ADDRS]); 2920 if (n_entries < 0) 2921 return ERR_PTR(n_entries); 2922 2923 if (n_entries > wiphy->max_acl_mac_addrs) 2924 return ERR_PTR(-ENOTSUPP); 2925 2926 acl = kzalloc(sizeof(*acl) + (sizeof(struct mac_address) * n_entries), 2927 GFP_KERNEL); 2928 if (!acl) 2929 return ERR_PTR(-ENOMEM); 2930 2931 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_MAC_ADDRS], tmp) { 2932 memcpy(acl->mac_addrs[i].addr, nla_data(attr), ETH_ALEN); 2933 i++; 2934 } 2935 2936 acl->n_acl_entries = n_entries; 2937 acl->acl_policy = acl_policy; 2938 2939 return acl; 2940 } 2941 2942 static int nl80211_set_mac_acl(struct sk_buff *skb, struct genl_info *info) 2943 { 2944 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 2945 struct net_device *dev = info->user_ptr[1]; 2946 struct cfg80211_acl_data *acl; 2947 int err; 2948 2949 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP && 2950 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) 2951 return -EOPNOTSUPP; 2952 2953 if (!dev->ieee80211_ptr->beacon_interval) 2954 return -EINVAL; 2955 2956 acl = parse_acl_data(&rdev->wiphy, info); 2957 if (IS_ERR(acl)) 2958 return PTR_ERR(acl); 2959 2960 err = rdev_set_mac_acl(rdev, dev, acl); 2961 2962 kfree(acl); 2963 2964 return err; 2965 } 2966 2967 static int nl80211_parse_beacon(struct nlattr *attrs[], 2968 struct cfg80211_beacon_data *bcn) 2969 { 2970 bool haveinfo = false; 2971 2972 if (!is_valid_ie_attr(attrs[NL80211_ATTR_BEACON_TAIL]) || 2973 !is_valid_ie_attr(attrs[NL80211_ATTR_IE]) || 2974 !is_valid_ie_attr(attrs[NL80211_ATTR_IE_PROBE_RESP]) || 2975 !is_valid_ie_attr(attrs[NL80211_ATTR_IE_ASSOC_RESP])) 2976 return -EINVAL; 2977 2978 memset(bcn, 0, sizeof(*bcn)); 2979 2980 if (attrs[NL80211_ATTR_BEACON_HEAD]) { 2981 bcn->head = nla_data(attrs[NL80211_ATTR_BEACON_HEAD]); 2982 bcn->head_len = nla_len(attrs[NL80211_ATTR_BEACON_HEAD]); 2983 if (!bcn->head_len) 2984 return -EINVAL; 2985 haveinfo = true; 2986 } 2987 2988 if (attrs[NL80211_ATTR_BEACON_TAIL]) { 2989 bcn->tail = nla_data(attrs[NL80211_ATTR_BEACON_TAIL]); 2990 bcn->tail_len = nla_len(attrs[NL80211_ATTR_BEACON_TAIL]); 2991 haveinfo = true; 2992 } 2993 2994 if (!haveinfo) 2995 return -EINVAL; 2996 2997 if (attrs[NL80211_ATTR_IE]) { 2998 bcn->beacon_ies = nla_data(attrs[NL80211_ATTR_IE]); 2999 bcn->beacon_ies_len = nla_len(attrs[NL80211_ATTR_IE]); 3000 } 3001 3002 if (attrs[NL80211_ATTR_IE_PROBE_RESP]) { 3003 bcn->proberesp_ies = 3004 nla_data(attrs[NL80211_ATTR_IE_PROBE_RESP]); 3005 bcn->proberesp_ies_len = 3006 nla_len(attrs[NL80211_ATTR_IE_PROBE_RESP]); 3007 } 3008 3009 if (attrs[NL80211_ATTR_IE_ASSOC_RESP]) { 3010 bcn->assocresp_ies = 3011 nla_data(attrs[NL80211_ATTR_IE_ASSOC_RESP]); 3012 bcn->assocresp_ies_len = 3013 nla_len(attrs[NL80211_ATTR_IE_ASSOC_RESP]); 3014 } 3015 3016 if (attrs[NL80211_ATTR_PROBE_RESP]) { 3017 bcn->probe_resp = nla_data(attrs[NL80211_ATTR_PROBE_RESP]); 3018 bcn->probe_resp_len = nla_len(attrs[NL80211_ATTR_PROBE_RESP]); 3019 } 3020 3021 return 0; 3022 } 3023 3024 static bool nl80211_get_ap_channel(struct cfg80211_registered_device *rdev, 3025 struct cfg80211_ap_settings *params) 3026 { 3027 struct wireless_dev *wdev; 3028 bool ret = false; 3029 3030 list_for_each_entry(wdev, &rdev->wdev_list, list) { 3031 if (wdev->iftype != NL80211_IFTYPE_AP && 3032 wdev->iftype != NL80211_IFTYPE_P2P_GO) 3033 continue; 3034 3035 if (!wdev->preset_chandef.chan) 3036 continue; 3037 3038 params->chandef = wdev->preset_chandef; 3039 ret = true; 3040 break; 3041 } 3042 3043 return ret; 3044 } 3045 3046 static bool nl80211_valid_auth_type(struct cfg80211_registered_device *rdev, 3047 enum nl80211_auth_type auth_type, 3048 enum nl80211_commands cmd) 3049 { 3050 if (auth_type > NL80211_AUTHTYPE_MAX) 3051 return false; 3052 3053 switch (cmd) { 3054 case NL80211_CMD_AUTHENTICATE: 3055 if (!(rdev->wiphy.features & NL80211_FEATURE_SAE) && 3056 auth_type == NL80211_AUTHTYPE_SAE) 3057 return false; 3058 return true; 3059 case NL80211_CMD_CONNECT: 3060 case NL80211_CMD_START_AP: 3061 /* SAE not supported yet */ 3062 if (auth_type == NL80211_AUTHTYPE_SAE) 3063 return false; 3064 return true; 3065 default: 3066 return false; 3067 } 3068 } 3069 3070 static int nl80211_start_ap(struct sk_buff *skb, struct genl_info *info) 3071 { 3072 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 3073 struct net_device *dev = info->user_ptr[1]; 3074 struct wireless_dev *wdev = dev->ieee80211_ptr; 3075 struct cfg80211_ap_settings params; 3076 int err; 3077 u8 radar_detect_width = 0; 3078 3079 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP && 3080 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) 3081 return -EOPNOTSUPP; 3082 3083 if (!rdev->ops->start_ap) 3084 return -EOPNOTSUPP; 3085 3086 if (wdev->beacon_interval) 3087 return -EALREADY; 3088 3089 memset(¶ms, 0, sizeof(params)); 3090 3091 /* these are required for START_AP */ 3092 if (!info->attrs[NL80211_ATTR_BEACON_INTERVAL] || 3093 !info->attrs[NL80211_ATTR_DTIM_PERIOD] || 3094 !info->attrs[NL80211_ATTR_BEACON_HEAD]) 3095 return -EINVAL; 3096 3097 err = nl80211_parse_beacon(info->attrs, ¶ms.beacon); 3098 if (err) 3099 return err; 3100 3101 params.beacon_interval = 3102 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]); 3103 params.dtim_period = 3104 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]); 3105 3106 err = cfg80211_validate_beacon_int(rdev, params.beacon_interval); 3107 if (err) 3108 return err; 3109 3110 /* 3111 * In theory, some of these attributes should be required here 3112 * but since they were not used when the command was originally 3113 * added, keep them optional for old user space programs to let 3114 * them continue to work with drivers that do not need the 3115 * additional information -- drivers must check! 3116 */ 3117 if (info->attrs[NL80211_ATTR_SSID]) { 3118 params.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]); 3119 params.ssid_len = 3120 nla_len(info->attrs[NL80211_ATTR_SSID]); 3121 if (params.ssid_len == 0 || 3122 params.ssid_len > IEEE80211_MAX_SSID_LEN) 3123 return -EINVAL; 3124 } 3125 3126 if (info->attrs[NL80211_ATTR_HIDDEN_SSID]) { 3127 params.hidden_ssid = nla_get_u32( 3128 info->attrs[NL80211_ATTR_HIDDEN_SSID]); 3129 if (params.hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE && 3130 params.hidden_ssid != NL80211_HIDDEN_SSID_ZERO_LEN && 3131 params.hidden_ssid != NL80211_HIDDEN_SSID_ZERO_CONTENTS) 3132 return -EINVAL; 3133 } 3134 3135 params.privacy = !!info->attrs[NL80211_ATTR_PRIVACY]; 3136 3137 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) { 3138 params.auth_type = nla_get_u32( 3139 info->attrs[NL80211_ATTR_AUTH_TYPE]); 3140 if (!nl80211_valid_auth_type(rdev, params.auth_type, 3141 NL80211_CMD_START_AP)) 3142 return -EINVAL; 3143 } else 3144 params.auth_type = NL80211_AUTHTYPE_AUTOMATIC; 3145 3146 err = nl80211_crypto_settings(rdev, info, ¶ms.crypto, 3147 NL80211_MAX_NR_CIPHER_SUITES); 3148 if (err) 3149 return err; 3150 3151 if (info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]) { 3152 if (!(rdev->wiphy.features & NL80211_FEATURE_INACTIVITY_TIMER)) 3153 return -EOPNOTSUPP; 3154 params.inactivity_timeout = nla_get_u16( 3155 info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]); 3156 } 3157 3158 if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) { 3159 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) 3160 return -EINVAL; 3161 params.p2p_ctwindow = 3162 nla_get_u8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]); 3163 if (params.p2p_ctwindow > 127) 3164 return -EINVAL; 3165 if (params.p2p_ctwindow != 0 && 3166 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN)) 3167 return -EINVAL; 3168 } 3169 3170 if (info->attrs[NL80211_ATTR_P2P_OPPPS]) { 3171 u8 tmp; 3172 3173 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) 3174 return -EINVAL; 3175 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]); 3176 if (tmp > 1) 3177 return -EINVAL; 3178 params.p2p_opp_ps = tmp; 3179 if (params.p2p_opp_ps != 0 && 3180 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS)) 3181 return -EINVAL; 3182 } 3183 3184 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) { 3185 err = nl80211_parse_chandef(rdev, info, ¶ms.chandef); 3186 if (err) 3187 return err; 3188 } else if (wdev->preset_chandef.chan) { 3189 params.chandef = wdev->preset_chandef; 3190 } else if (!nl80211_get_ap_channel(rdev, ¶ms)) 3191 return -EINVAL; 3192 3193 if (!cfg80211_reg_can_beacon(&rdev->wiphy, ¶ms.chandef)) 3194 return -EINVAL; 3195 3196 err = cfg80211_chandef_dfs_required(wdev->wiphy, ¶ms.chandef); 3197 if (err < 0) 3198 return err; 3199 if (err) { 3200 radar_detect_width = BIT(params.chandef.width); 3201 params.radar_required = true; 3202 } 3203 3204 err = cfg80211_can_use_iftype_chan(rdev, wdev, wdev->iftype, 3205 params.chandef.chan, 3206 CHAN_MODE_SHARED, 3207 radar_detect_width); 3208 if (err) 3209 return err; 3210 3211 if (info->attrs[NL80211_ATTR_ACL_POLICY]) { 3212 params.acl = parse_acl_data(&rdev->wiphy, info); 3213 if (IS_ERR(params.acl)) 3214 return PTR_ERR(params.acl); 3215 } 3216 3217 err = rdev_start_ap(rdev, dev, ¶ms); 3218 if (!err) { 3219 wdev->preset_chandef = params.chandef; 3220 wdev->beacon_interval = params.beacon_interval; 3221 wdev->channel = params.chandef.chan; 3222 wdev->ssid_len = params.ssid_len; 3223 memcpy(wdev->ssid, params.ssid, wdev->ssid_len); 3224 } 3225 3226 kfree(params.acl); 3227 3228 return err; 3229 } 3230 3231 static int nl80211_set_beacon(struct sk_buff *skb, struct genl_info *info) 3232 { 3233 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 3234 struct net_device *dev = info->user_ptr[1]; 3235 struct wireless_dev *wdev = dev->ieee80211_ptr; 3236 struct cfg80211_beacon_data params; 3237 int err; 3238 3239 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP && 3240 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) 3241 return -EOPNOTSUPP; 3242 3243 if (!rdev->ops->change_beacon) 3244 return -EOPNOTSUPP; 3245 3246 if (!wdev->beacon_interval) 3247 return -EINVAL; 3248 3249 err = nl80211_parse_beacon(info->attrs, ¶ms); 3250 if (err) 3251 return err; 3252 3253 return rdev_change_beacon(rdev, dev, ¶ms); 3254 } 3255 3256 static int nl80211_stop_ap(struct sk_buff *skb, struct genl_info *info) 3257 { 3258 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 3259 struct net_device *dev = info->user_ptr[1]; 3260 3261 return cfg80211_stop_ap(rdev, dev); 3262 } 3263 3264 static const struct nla_policy sta_flags_policy[NL80211_STA_FLAG_MAX + 1] = { 3265 [NL80211_STA_FLAG_AUTHORIZED] = { .type = NLA_FLAG }, 3266 [NL80211_STA_FLAG_SHORT_PREAMBLE] = { .type = NLA_FLAG }, 3267 [NL80211_STA_FLAG_WME] = { .type = NLA_FLAG }, 3268 [NL80211_STA_FLAG_MFP] = { .type = NLA_FLAG }, 3269 [NL80211_STA_FLAG_AUTHENTICATED] = { .type = NLA_FLAG }, 3270 [NL80211_STA_FLAG_TDLS_PEER] = { .type = NLA_FLAG }, 3271 }; 3272 3273 static int parse_station_flags(struct genl_info *info, 3274 enum nl80211_iftype iftype, 3275 struct station_parameters *params) 3276 { 3277 struct nlattr *flags[NL80211_STA_FLAG_MAX + 1]; 3278 struct nlattr *nla; 3279 int flag; 3280 3281 /* 3282 * Try parsing the new attribute first so userspace 3283 * can specify both for older kernels. 3284 */ 3285 nla = info->attrs[NL80211_ATTR_STA_FLAGS2]; 3286 if (nla) { 3287 struct nl80211_sta_flag_update *sta_flags; 3288 3289 sta_flags = nla_data(nla); 3290 params->sta_flags_mask = sta_flags->mask; 3291 params->sta_flags_set = sta_flags->set; 3292 params->sta_flags_set &= params->sta_flags_mask; 3293 if ((params->sta_flags_mask | 3294 params->sta_flags_set) & BIT(__NL80211_STA_FLAG_INVALID)) 3295 return -EINVAL; 3296 return 0; 3297 } 3298 3299 /* if present, parse the old attribute */ 3300 3301 nla = info->attrs[NL80211_ATTR_STA_FLAGS]; 3302 if (!nla) 3303 return 0; 3304 3305 if (nla_parse_nested(flags, NL80211_STA_FLAG_MAX, 3306 nla, sta_flags_policy)) 3307 return -EINVAL; 3308 3309 /* 3310 * Only allow certain flags for interface types so that 3311 * other attributes are silently ignored. Remember that 3312 * this is backward compatibility code with old userspace 3313 * and shouldn't be hit in other cases anyway. 3314 */ 3315 switch (iftype) { 3316 case NL80211_IFTYPE_AP: 3317 case NL80211_IFTYPE_AP_VLAN: 3318 case NL80211_IFTYPE_P2P_GO: 3319 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) | 3320 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) | 3321 BIT(NL80211_STA_FLAG_WME) | 3322 BIT(NL80211_STA_FLAG_MFP); 3323 break; 3324 case NL80211_IFTYPE_P2P_CLIENT: 3325 case NL80211_IFTYPE_STATION: 3326 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) | 3327 BIT(NL80211_STA_FLAG_TDLS_PEER); 3328 break; 3329 case NL80211_IFTYPE_MESH_POINT: 3330 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHENTICATED) | 3331 BIT(NL80211_STA_FLAG_MFP) | 3332 BIT(NL80211_STA_FLAG_AUTHORIZED); 3333 default: 3334 return -EINVAL; 3335 } 3336 3337 for (flag = 1; flag <= NL80211_STA_FLAG_MAX; flag++) { 3338 if (flags[flag]) { 3339 params->sta_flags_set |= (1<<flag); 3340 3341 /* no longer support new API additions in old API */ 3342 if (flag > NL80211_STA_FLAG_MAX_OLD_API) 3343 return -EINVAL; 3344 } 3345 } 3346 3347 return 0; 3348 } 3349 3350 static bool nl80211_put_sta_rate(struct sk_buff *msg, struct rate_info *info, 3351 int attr) 3352 { 3353 struct nlattr *rate; 3354 u32 bitrate; 3355 u16 bitrate_compat; 3356 3357 rate = nla_nest_start(msg, attr); 3358 if (!rate) 3359 return false; 3360 3361 /* cfg80211_calculate_bitrate will return 0 for mcs >= 32 */ 3362 bitrate = cfg80211_calculate_bitrate(info); 3363 /* report 16-bit bitrate only if we can */ 3364 bitrate_compat = bitrate < (1UL << 16) ? bitrate : 0; 3365 if (bitrate > 0 && 3366 nla_put_u32(msg, NL80211_RATE_INFO_BITRATE32, bitrate)) 3367 return false; 3368 if (bitrate_compat > 0 && 3369 nla_put_u16(msg, NL80211_RATE_INFO_BITRATE, bitrate_compat)) 3370 return false; 3371 3372 if (info->flags & RATE_INFO_FLAGS_MCS) { 3373 if (nla_put_u8(msg, NL80211_RATE_INFO_MCS, info->mcs)) 3374 return false; 3375 if (info->flags & RATE_INFO_FLAGS_40_MHZ_WIDTH && 3376 nla_put_flag(msg, NL80211_RATE_INFO_40_MHZ_WIDTH)) 3377 return false; 3378 if (info->flags & RATE_INFO_FLAGS_SHORT_GI && 3379 nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI)) 3380 return false; 3381 } else if (info->flags & RATE_INFO_FLAGS_VHT_MCS) { 3382 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_MCS, info->mcs)) 3383 return false; 3384 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_NSS, info->nss)) 3385 return false; 3386 if (info->flags & RATE_INFO_FLAGS_40_MHZ_WIDTH && 3387 nla_put_flag(msg, NL80211_RATE_INFO_40_MHZ_WIDTH)) 3388 return false; 3389 if (info->flags & RATE_INFO_FLAGS_80_MHZ_WIDTH && 3390 nla_put_flag(msg, NL80211_RATE_INFO_80_MHZ_WIDTH)) 3391 return false; 3392 if (info->flags & RATE_INFO_FLAGS_80P80_MHZ_WIDTH && 3393 nla_put_flag(msg, NL80211_RATE_INFO_80P80_MHZ_WIDTH)) 3394 return false; 3395 if (info->flags & RATE_INFO_FLAGS_160_MHZ_WIDTH && 3396 nla_put_flag(msg, NL80211_RATE_INFO_160_MHZ_WIDTH)) 3397 return false; 3398 if (info->flags & RATE_INFO_FLAGS_SHORT_GI && 3399 nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI)) 3400 return false; 3401 } 3402 3403 nla_nest_end(msg, rate); 3404 return true; 3405 } 3406 3407 static bool nl80211_put_signal(struct sk_buff *msg, u8 mask, s8 *signal, 3408 int id) 3409 { 3410 void *attr; 3411 int i = 0; 3412 3413 if (!mask) 3414 return true; 3415 3416 attr = nla_nest_start(msg, id); 3417 if (!attr) 3418 return false; 3419 3420 for (i = 0; i < IEEE80211_MAX_CHAINS; i++) { 3421 if (!(mask & BIT(i))) 3422 continue; 3423 3424 if (nla_put_u8(msg, i, signal[i])) 3425 return false; 3426 } 3427 3428 nla_nest_end(msg, attr); 3429 3430 return true; 3431 } 3432 3433 static int nl80211_send_station(struct sk_buff *msg, u32 portid, u32 seq, 3434 int flags, 3435 struct cfg80211_registered_device *rdev, 3436 struct net_device *dev, 3437 const u8 *mac_addr, struct station_info *sinfo) 3438 { 3439 void *hdr; 3440 struct nlattr *sinfoattr, *bss_param; 3441 3442 hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_STATION); 3443 if (!hdr) 3444 return -1; 3445 3446 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) || 3447 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) || 3448 nla_put_u32(msg, NL80211_ATTR_GENERATION, sinfo->generation)) 3449 goto nla_put_failure; 3450 3451 sinfoattr = nla_nest_start(msg, NL80211_ATTR_STA_INFO); 3452 if (!sinfoattr) 3453 goto nla_put_failure; 3454 if ((sinfo->filled & STATION_INFO_CONNECTED_TIME) && 3455 nla_put_u32(msg, NL80211_STA_INFO_CONNECTED_TIME, 3456 sinfo->connected_time)) 3457 goto nla_put_failure; 3458 if ((sinfo->filled & STATION_INFO_INACTIVE_TIME) && 3459 nla_put_u32(msg, NL80211_STA_INFO_INACTIVE_TIME, 3460 sinfo->inactive_time)) 3461 goto nla_put_failure; 3462 if ((sinfo->filled & (STATION_INFO_RX_BYTES | 3463 STATION_INFO_RX_BYTES64)) && 3464 nla_put_u32(msg, NL80211_STA_INFO_RX_BYTES, 3465 (u32)sinfo->rx_bytes)) 3466 goto nla_put_failure; 3467 if ((sinfo->filled & (STATION_INFO_TX_BYTES | 3468 STATION_INFO_TX_BYTES64)) && 3469 nla_put_u32(msg, NL80211_STA_INFO_TX_BYTES, 3470 (u32)sinfo->tx_bytes)) 3471 goto nla_put_failure; 3472 if ((sinfo->filled & STATION_INFO_RX_BYTES64) && 3473 nla_put_u64(msg, NL80211_STA_INFO_RX_BYTES64, 3474 sinfo->rx_bytes)) 3475 goto nla_put_failure; 3476 if ((sinfo->filled & STATION_INFO_TX_BYTES64) && 3477 nla_put_u64(msg, NL80211_STA_INFO_TX_BYTES64, 3478 sinfo->tx_bytes)) 3479 goto nla_put_failure; 3480 if ((sinfo->filled & STATION_INFO_LLID) && 3481 nla_put_u16(msg, NL80211_STA_INFO_LLID, sinfo->llid)) 3482 goto nla_put_failure; 3483 if ((sinfo->filled & STATION_INFO_PLID) && 3484 nla_put_u16(msg, NL80211_STA_INFO_PLID, sinfo->plid)) 3485 goto nla_put_failure; 3486 if ((sinfo->filled & STATION_INFO_PLINK_STATE) && 3487 nla_put_u8(msg, NL80211_STA_INFO_PLINK_STATE, 3488 sinfo->plink_state)) 3489 goto nla_put_failure; 3490 switch (rdev->wiphy.signal_type) { 3491 case CFG80211_SIGNAL_TYPE_MBM: 3492 if ((sinfo->filled & STATION_INFO_SIGNAL) && 3493 nla_put_u8(msg, NL80211_STA_INFO_SIGNAL, 3494 sinfo->signal)) 3495 goto nla_put_failure; 3496 if ((sinfo->filled & STATION_INFO_SIGNAL_AVG) && 3497 nla_put_u8(msg, NL80211_STA_INFO_SIGNAL_AVG, 3498 sinfo->signal_avg)) 3499 goto nla_put_failure; 3500 break; 3501 default: 3502 break; 3503 } 3504 if (sinfo->filled & STATION_INFO_CHAIN_SIGNAL) { 3505 if (!nl80211_put_signal(msg, sinfo->chains, 3506 sinfo->chain_signal, 3507 NL80211_STA_INFO_CHAIN_SIGNAL)) 3508 goto nla_put_failure; 3509 } 3510 if (sinfo->filled & STATION_INFO_CHAIN_SIGNAL_AVG) { 3511 if (!nl80211_put_signal(msg, sinfo->chains, 3512 sinfo->chain_signal_avg, 3513 NL80211_STA_INFO_CHAIN_SIGNAL_AVG)) 3514 goto nla_put_failure; 3515 } 3516 if (sinfo->filled & STATION_INFO_TX_BITRATE) { 3517 if (!nl80211_put_sta_rate(msg, &sinfo->txrate, 3518 NL80211_STA_INFO_TX_BITRATE)) 3519 goto nla_put_failure; 3520 } 3521 if (sinfo->filled & STATION_INFO_RX_BITRATE) { 3522 if (!nl80211_put_sta_rate(msg, &sinfo->rxrate, 3523 NL80211_STA_INFO_RX_BITRATE)) 3524 goto nla_put_failure; 3525 } 3526 if ((sinfo->filled & STATION_INFO_RX_PACKETS) && 3527 nla_put_u32(msg, NL80211_STA_INFO_RX_PACKETS, 3528 sinfo->rx_packets)) 3529 goto nla_put_failure; 3530 if ((sinfo->filled & STATION_INFO_TX_PACKETS) && 3531 nla_put_u32(msg, NL80211_STA_INFO_TX_PACKETS, 3532 sinfo->tx_packets)) 3533 goto nla_put_failure; 3534 if ((sinfo->filled & STATION_INFO_TX_RETRIES) && 3535 nla_put_u32(msg, NL80211_STA_INFO_TX_RETRIES, 3536 sinfo->tx_retries)) 3537 goto nla_put_failure; 3538 if ((sinfo->filled & STATION_INFO_TX_FAILED) && 3539 nla_put_u32(msg, NL80211_STA_INFO_TX_FAILED, 3540 sinfo->tx_failed)) 3541 goto nla_put_failure; 3542 if ((sinfo->filled & STATION_INFO_BEACON_LOSS_COUNT) && 3543 nla_put_u32(msg, NL80211_STA_INFO_BEACON_LOSS, 3544 sinfo->beacon_loss_count)) 3545 goto nla_put_failure; 3546 if ((sinfo->filled & STATION_INFO_LOCAL_PM) && 3547 nla_put_u32(msg, NL80211_STA_INFO_LOCAL_PM, 3548 sinfo->local_pm)) 3549 goto nla_put_failure; 3550 if ((sinfo->filled & STATION_INFO_PEER_PM) && 3551 nla_put_u32(msg, NL80211_STA_INFO_PEER_PM, 3552 sinfo->peer_pm)) 3553 goto nla_put_failure; 3554 if ((sinfo->filled & STATION_INFO_NONPEER_PM) && 3555 nla_put_u32(msg, NL80211_STA_INFO_NONPEER_PM, 3556 sinfo->nonpeer_pm)) 3557 goto nla_put_failure; 3558 if (sinfo->filled & STATION_INFO_BSS_PARAM) { 3559 bss_param = nla_nest_start(msg, NL80211_STA_INFO_BSS_PARAM); 3560 if (!bss_param) 3561 goto nla_put_failure; 3562 3563 if (((sinfo->bss_param.flags & BSS_PARAM_FLAGS_CTS_PROT) && 3564 nla_put_flag(msg, NL80211_STA_BSS_PARAM_CTS_PROT)) || 3565 ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_PREAMBLE) && 3566 nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_PREAMBLE)) || 3567 ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_SLOT_TIME) && 3568 nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_SLOT_TIME)) || 3569 nla_put_u8(msg, NL80211_STA_BSS_PARAM_DTIM_PERIOD, 3570 sinfo->bss_param.dtim_period) || 3571 nla_put_u16(msg, NL80211_STA_BSS_PARAM_BEACON_INTERVAL, 3572 sinfo->bss_param.beacon_interval)) 3573 goto nla_put_failure; 3574 3575 nla_nest_end(msg, bss_param); 3576 } 3577 if ((sinfo->filled & STATION_INFO_STA_FLAGS) && 3578 nla_put(msg, NL80211_STA_INFO_STA_FLAGS, 3579 sizeof(struct nl80211_sta_flag_update), 3580 &sinfo->sta_flags)) 3581 goto nla_put_failure; 3582 if ((sinfo->filled & STATION_INFO_T_OFFSET) && 3583 nla_put_u64(msg, NL80211_STA_INFO_T_OFFSET, 3584 sinfo->t_offset)) 3585 goto nla_put_failure; 3586 nla_nest_end(msg, sinfoattr); 3587 3588 if ((sinfo->filled & STATION_INFO_ASSOC_REQ_IES) && 3589 nla_put(msg, NL80211_ATTR_IE, sinfo->assoc_req_ies_len, 3590 sinfo->assoc_req_ies)) 3591 goto nla_put_failure; 3592 3593 return genlmsg_end(msg, hdr); 3594 3595 nla_put_failure: 3596 genlmsg_cancel(msg, hdr); 3597 return -EMSGSIZE; 3598 } 3599 3600 static int nl80211_dump_station(struct sk_buff *skb, 3601 struct netlink_callback *cb) 3602 { 3603 struct station_info sinfo; 3604 struct cfg80211_registered_device *dev; 3605 struct wireless_dev *wdev; 3606 u8 mac_addr[ETH_ALEN]; 3607 int sta_idx = cb->args[2]; 3608 int err; 3609 3610 err = nl80211_prepare_wdev_dump(skb, cb, &dev, &wdev); 3611 if (err) 3612 return err; 3613 3614 if (!wdev->netdev) { 3615 err = -EINVAL; 3616 goto out_err; 3617 } 3618 3619 if (!dev->ops->dump_station) { 3620 err = -EOPNOTSUPP; 3621 goto out_err; 3622 } 3623 3624 while (1) { 3625 memset(&sinfo, 0, sizeof(sinfo)); 3626 err = rdev_dump_station(dev, wdev->netdev, sta_idx, 3627 mac_addr, &sinfo); 3628 if (err == -ENOENT) 3629 break; 3630 if (err) 3631 goto out_err; 3632 3633 if (nl80211_send_station(skb, 3634 NETLINK_CB(cb->skb).portid, 3635 cb->nlh->nlmsg_seq, NLM_F_MULTI, 3636 dev, wdev->netdev, mac_addr, 3637 &sinfo) < 0) 3638 goto out; 3639 3640 sta_idx++; 3641 } 3642 3643 3644 out: 3645 cb->args[2] = sta_idx; 3646 err = skb->len; 3647 out_err: 3648 nl80211_finish_wdev_dump(dev); 3649 3650 return err; 3651 } 3652 3653 static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info) 3654 { 3655 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 3656 struct net_device *dev = info->user_ptr[1]; 3657 struct station_info sinfo; 3658 struct sk_buff *msg; 3659 u8 *mac_addr = NULL; 3660 int err; 3661 3662 memset(&sinfo, 0, sizeof(sinfo)); 3663 3664 if (!info->attrs[NL80211_ATTR_MAC]) 3665 return -EINVAL; 3666 3667 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]); 3668 3669 if (!rdev->ops->get_station) 3670 return -EOPNOTSUPP; 3671 3672 err = rdev_get_station(rdev, dev, mac_addr, &sinfo); 3673 if (err) 3674 return err; 3675 3676 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 3677 if (!msg) 3678 return -ENOMEM; 3679 3680 if (nl80211_send_station(msg, info->snd_portid, info->snd_seq, 0, 3681 rdev, dev, mac_addr, &sinfo) < 0) { 3682 nlmsg_free(msg); 3683 return -ENOBUFS; 3684 } 3685 3686 return genlmsg_reply(msg, info); 3687 } 3688 3689 int cfg80211_check_station_change(struct wiphy *wiphy, 3690 struct station_parameters *params, 3691 enum cfg80211_station_type statype) 3692 { 3693 if (params->listen_interval != -1) 3694 return -EINVAL; 3695 if (params->aid) 3696 return -EINVAL; 3697 3698 /* When you run into this, adjust the code below for the new flag */ 3699 BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7); 3700 3701 switch (statype) { 3702 case CFG80211_STA_MESH_PEER_KERNEL: 3703 case CFG80211_STA_MESH_PEER_USER: 3704 /* 3705 * No ignoring the TDLS flag here -- the userspace mesh 3706 * code doesn't have the bug of including TDLS in the 3707 * mask everywhere. 3708 */ 3709 if (params->sta_flags_mask & 3710 ~(BIT(NL80211_STA_FLAG_AUTHENTICATED) | 3711 BIT(NL80211_STA_FLAG_MFP) | 3712 BIT(NL80211_STA_FLAG_AUTHORIZED))) 3713 return -EINVAL; 3714 break; 3715 case CFG80211_STA_TDLS_PEER_SETUP: 3716 case CFG80211_STA_TDLS_PEER_ACTIVE: 3717 if (!(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))) 3718 return -EINVAL; 3719 /* ignore since it can't change */ 3720 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER); 3721 break; 3722 default: 3723 /* disallow mesh-specific things */ 3724 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION) 3725 return -EINVAL; 3726 if (params->local_pm) 3727 return -EINVAL; 3728 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE) 3729 return -EINVAL; 3730 } 3731 3732 if (statype != CFG80211_STA_TDLS_PEER_SETUP && 3733 statype != CFG80211_STA_TDLS_PEER_ACTIVE) { 3734 /* TDLS can't be set, ... */ 3735 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) 3736 return -EINVAL; 3737 /* 3738 * ... but don't bother the driver with it. This works around 3739 * a hostapd/wpa_supplicant issue -- it always includes the 3740 * TLDS_PEER flag in the mask even for AP mode. 3741 */ 3742 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER); 3743 } 3744 3745 if (statype != CFG80211_STA_TDLS_PEER_SETUP) { 3746 /* reject other things that can't change */ 3747 if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD) 3748 return -EINVAL; 3749 if (params->sta_modify_mask & STATION_PARAM_APPLY_CAPABILITY) 3750 return -EINVAL; 3751 if (params->supported_rates) 3752 return -EINVAL; 3753 if (params->ext_capab || params->ht_capa || params->vht_capa) 3754 return -EINVAL; 3755 } 3756 3757 if (statype != CFG80211_STA_AP_CLIENT) { 3758 if (params->vlan) 3759 return -EINVAL; 3760 } 3761 3762 switch (statype) { 3763 case CFG80211_STA_AP_MLME_CLIENT: 3764 /* Use this only for authorizing/unauthorizing a station */ 3765 if (!(params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED))) 3766 return -EOPNOTSUPP; 3767 break; 3768 case CFG80211_STA_AP_CLIENT: 3769 /* accept only the listed bits */ 3770 if (params->sta_flags_mask & 3771 ~(BIT(NL80211_STA_FLAG_AUTHORIZED) | 3772 BIT(NL80211_STA_FLAG_AUTHENTICATED) | 3773 BIT(NL80211_STA_FLAG_ASSOCIATED) | 3774 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) | 3775 BIT(NL80211_STA_FLAG_WME) | 3776 BIT(NL80211_STA_FLAG_MFP))) 3777 return -EINVAL; 3778 3779 /* but authenticated/associated only if driver handles it */ 3780 if (!(wiphy->features & NL80211_FEATURE_FULL_AP_CLIENT_STATE) && 3781 params->sta_flags_mask & 3782 (BIT(NL80211_STA_FLAG_AUTHENTICATED) | 3783 BIT(NL80211_STA_FLAG_ASSOCIATED))) 3784 return -EINVAL; 3785 break; 3786 case CFG80211_STA_IBSS: 3787 case CFG80211_STA_AP_STA: 3788 /* reject any changes other than AUTHORIZED */ 3789 if (params->sta_flags_mask & ~BIT(NL80211_STA_FLAG_AUTHORIZED)) 3790 return -EINVAL; 3791 break; 3792 case CFG80211_STA_TDLS_PEER_SETUP: 3793 /* reject any changes other than AUTHORIZED or WME */ 3794 if (params->sta_flags_mask & ~(BIT(NL80211_STA_FLAG_AUTHORIZED) | 3795 BIT(NL80211_STA_FLAG_WME))) 3796 return -EINVAL; 3797 /* force (at least) rates when authorizing */ 3798 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_AUTHORIZED) && 3799 !params->supported_rates) 3800 return -EINVAL; 3801 break; 3802 case CFG80211_STA_TDLS_PEER_ACTIVE: 3803 /* reject any changes */ 3804 return -EINVAL; 3805 case CFG80211_STA_MESH_PEER_KERNEL: 3806 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE) 3807 return -EINVAL; 3808 break; 3809 case CFG80211_STA_MESH_PEER_USER: 3810 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION) 3811 return -EINVAL; 3812 break; 3813 } 3814 3815 return 0; 3816 } 3817 EXPORT_SYMBOL(cfg80211_check_station_change); 3818 3819 /* 3820 * Get vlan interface making sure it is running and on the right wiphy. 3821 */ 3822 static struct net_device *get_vlan(struct genl_info *info, 3823 struct cfg80211_registered_device *rdev) 3824 { 3825 struct nlattr *vlanattr = info->attrs[NL80211_ATTR_STA_VLAN]; 3826 struct net_device *v; 3827 int ret; 3828 3829 if (!vlanattr) 3830 return NULL; 3831 3832 v = dev_get_by_index(genl_info_net(info), nla_get_u32(vlanattr)); 3833 if (!v) 3834 return ERR_PTR(-ENODEV); 3835 3836 if (!v->ieee80211_ptr || v->ieee80211_ptr->wiphy != &rdev->wiphy) { 3837 ret = -EINVAL; 3838 goto error; 3839 } 3840 3841 if (v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN && 3842 v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP && 3843 v->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) { 3844 ret = -EINVAL; 3845 goto error; 3846 } 3847 3848 if (!netif_running(v)) { 3849 ret = -ENETDOWN; 3850 goto error; 3851 } 3852 3853 return v; 3854 error: 3855 dev_put(v); 3856 return ERR_PTR(ret); 3857 } 3858 3859 static struct nla_policy 3860 nl80211_sta_wme_policy[NL80211_STA_WME_MAX + 1] __read_mostly = { 3861 [NL80211_STA_WME_UAPSD_QUEUES] = { .type = NLA_U8 }, 3862 [NL80211_STA_WME_MAX_SP] = { .type = NLA_U8 }, 3863 }; 3864 3865 static int nl80211_parse_sta_wme(struct genl_info *info, 3866 struct station_parameters *params) 3867 { 3868 struct nlattr *tb[NL80211_STA_WME_MAX + 1]; 3869 struct nlattr *nla; 3870 int err; 3871 3872 /* parse WME attributes if present */ 3873 if (!info->attrs[NL80211_ATTR_STA_WME]) 3874 return 0; 3875 3876 nla = info->attrs[NL80211_ATTR_STA_WME]; 3877 err = nla_parse_nested(tb, NL80211_STA_WME_MAX, nla, 3878 nl80211_sta_wme_policy); 3879 if (err) 3880 return err; 3881 3882 if (tb[NL80211_STA_WME_UAPSD_QUEUES]) 3883 params->uapsd_queues = nla_get_u8( 3884 tb[NL80211_STA_WME_UAPSD_QUEUES]); 3885 if (params->uapsd_queues & ~IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK) 3886 return -EINVAL; 3887 3888 if (tb[NL80211_STA_WME_MAX_SP]) 3889 params->max_sp = nla_get_u8(tb[NL80211_STA_WME_MAX_SP]); 3890 3891 if (params->max_sp & ~IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK) 3892 return -EINVAL; 3893 3894 params->sta_modify_mask |= STATION_PARAM_APPLY_UAPSD; 3895 3896 return 0; 3897 } 3898 3899 static int nl80211_set_station_tdls(struct genl_info *info, 3900 struct station_parameters *params) 3901 { 3902 /* Dummy STA entry gets updated once the peer capabilities are known */ 3903 if (info->attrs[NL80211_ATTR_PEER_AID]) 3904 params->aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]); 3905 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) 3906 params->ht_capa = 3907 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]); 3908 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) 3909 params->vht_capa = 3910 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]); 3911 3912 return nl80211_parse_sta_wme(info, params); 3913 } 3914 3915 static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info) 3916 { 3917 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 3918 struct net_device *dev = info->user_ptr[1]; 3919 struct station_parameters params; 3920 u8 *mac_addr; 3921 int err; 3922 3923 memset(¶ms, 0, sizeof(params)); 3924 3925 params.listen_interval = -1; 3926 3927 if (!rdev->ops->change_station) 3928 return -EOPNOTSUPP; 3929 3930 if (info->attrs[NL80211_ATTR_STA_AID]) 3931 return -EINVAL; 3932 3933 if (!info->attrs[NL80211_ATTR_MAC]) 3934 return -EINVAL; 3935 3936 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]); 3937 3938 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) { 3939 params.supported_rates = 3940 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]); 3941 params.supported_rates_len = 3942 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]); 3943 } 3944 3945 if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) { 3946 params.capability = 3947 nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]); 3948 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY; 3949 } 3950 3951 if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) { 3952 params.ext_capab = 3953 nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]); 3954 params.ext_capab_len = 3955 nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]); 3956 } 3957 3958 if (info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]) 3959 return -EINVAL; 3960 3961 if (parse_station_flags(info, dev->ieee80211_ptr->iftype, ¶ms)) 3962 return -EINVAL; 3963 3964 if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION]) { 3965 params.plink_action = 3966 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]); 3967 if (params.plink_action >= NUM_NL80211_PLINK_ACTIONS) 3968 return -EINVAL; 3969 } 3970 3971 if (info->attrs[NL80211_ATTR_STA_PLINK_STATE]) { 3972 params.plink_state = 3973 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_STATE]); 3974 if (params.plink_state >= NUM_NL80211_PLINK_STATES) 3975 return -EINVAL; 3976 params.sta_modify_mask |= STATION_PARAM_APPLY_PLINK_STATE; 3977 } 3978 3979 if (info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]) { 3980 enum nl80211_mesh_power_mode pm = nla_get_u32( 3981 info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]); 3982 3983 if (pm <= NL80211_MESH_POWER_UNKNOWN || 3984 pm > NL80211_MESH_POWER_MAX) 3985 return -EINVAL; 3986 3987 params.local_pm = pm; 3988 } 3989 3990 /* Include parameters for TDLS peer (will check later) */ 3991 err = nl80211_set_station_tdls(info, ¶ms); 3992 if (err) 3993 return err; 3994 3995 params.vlan = get_vlan(info, rdev); 3996 if (IS_ERR(params.vlan)) 3997 return PTR_ERR(params.vlan); 3998 3999 switch (dev->ieee80211_ptr->iftype) { 4000 case NL80211_IFTYPE_AP: 4001 case NL80211_IFTYPE_AP_VLAN: 4002 case NL80211_IFTYPE_P2P_GO: 4003 case NL80211_IFTYPE_P2P_CLIENT: 4004 case NL80211_IFTYPE_STATION: 4005 case NL80211_IFTYPE_ADHOC: 4006 case NL80211_IFTYPE_MESH_POINT: 4007 break; 4008 default: 4009 err = -EOPNOTSUPP; 4010 goto out_put_vlan; 4011 } 4012 4013 /* driver will call cfg80211_check_station_change() */ 4014 err = rdev_change_station(rdev, dev, mac_addr, ¶ms); 4015 4016 out_put_vlan: 4017 if (params.vlan) 4018 dev_put(params.vlan); 4019 4020 return err; 4021 } 4022 4023 static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info) 4024 { 4025 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 4026 int err; 4027 struct net_device *dev = info->user_ptr[1]; 4028 struct station_parameters params; 4029 u8 *mac_addr = NULL; 4030 4031 memset(¶ms, 0, sizeof(params)); 4032 4033 if (!rdev->ops->add_station) 4034 return -EOPNOTSUPP; 4035 4036 if (!info->attrs[NL80211_ATTR_MAC]) 4037 return -EINVAL; 4038 4039 if (!info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]) 4040 return -EINVAL; 4041 4042 if (!info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) 4043 return -EINVAL; 4044 4045 if (!info->attrs[NL80211_ATTR_STA_AID] && 4046 !info->attrs[NL80211_ATTR_PEER_AID]) 4047 return -EINVAL; 4048 4049 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]); 4050 params.supported_rates = 4051 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]); 4052 params.supported_rates_len = 4053 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]); 4054 params.listen_interval = 4055 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]); 4056 4057 if (info->attrs[NL80211_ATTR_PEER_AID]) 4058 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]); 4059 else 4060 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]); 4061 if (!params.aid || params.aid > IEEE80211_MAX_AID) 4062 return -EINVAL; 4063 4064 if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) { 4065 params.capability = 4066 nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]); 4067 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY; 4068 } 4069 4070 if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) { 4071 params.ext_capab = 4072 nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]); 4073 params.ext_capab_len = 4074 nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]); 4075 } 4076 4077 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) 4078 params.ht_capa = 4079 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]); 4080 4081 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) 4082 params.vht_capa = 4083 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]); 4084 4085 if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION]) { 4086 params.plink_action = 4087 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]); 4088 if (params.plink_action >= NUM_NL80211_PLINK_ACTIONS) 4089 return -EINVAL; 4090 } 4091 4092 err = nl80211_parse_sta_wme(info, ¶ms); 4093 if (err) 4094 return err; 4095 4096 if (parse_station_flags(info, dev->ieee80211_ptr->iftype, ¶ms)) 4097 return -EINVAL; 4098 4099 /* When you run into this, adjust the code below for the new flag */ 4100 BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7); 4101 4102 switch (dev->ieee80211_ptr->iftype) { 4103 case NL80211_IFTYPE_AP: 4104 case NL80211_IFTYPE_AP_VLAN: 4105 case NL80211_IFTYPE_P2P_GO: 4106 /* ignore WME attributes if iface/sta is not capable */ 4107 if (!(rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) || 4108 !(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME))) 4109 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD; 4110 4111 /* TDLS peers cannot be added */ 4112 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) || 4113 info->attrs[NL80211_ATTR_PEER_AID]) 4114 return -EINVAL; 4115 /* but don't bother the driver with it */ 4116 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER); 4117 4118 /* allow authenticated/associated only if driver handles it */ 4119 if (!(rdev->wiphy.features & 4120 NL80211_FEATURE_FULL_AP_CLIENT_STATE) && 4121 params.sta_flags_mask & 4122 (BIT(NL80211_STA_FLAG_AUTHENTICATED) | 4123 BIT(NL80211_STA_FLAG_ASSOCIATED))) 4124 return -EINVAL; 4125 4126 /* must be last in here for error handling */ 4127 params.vlan = get_vlan(info, rdev); 4128 if (IS_ERR(params.vlan)) 4129 return PTR_ERR(params.vlan); 4130 break; 4131 case NL80211_IFTYPE_MESH_POINT: 4132 /* ignore uAPSD data */ 4133 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD; 4134 4135 /* associated is disallowed */ 4136 if (params.sta_flags_mask & BIT(NL80211_STA_FLAG_ASSOCIATED)) 4137 return -EINVAL; 4138 /* TDLS peers cannot be added */ 4139 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) || 4140 info->attrs[NL80211_ATTR_PEER_AID]) 4141 return -EINVAL; 4142 break; 4143 case NL80211_IFTYPE_STATION: 4144 case NL80211_IFTYPE_P2P_CLIENT: 4145 /* ignore uAPSD data */ 4146 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD; 4147 4148 /* these are disallowed */ 4149 if (params.sta_flags_mask & 4150 (BIT(NL80211_STA_FLAG_ASSOCIATED) | 4151 BIT(NL80211_STA_FLAG_AUTHENTICATED))) 4152 return -EINVAL; 4153 /* Only TDLS peers can be added */ 4154 if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))) 4155 return -EINVAL; 4156 /* Can only add if TDLS ... */ 4157 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS)) 4158 return -EOPNOTSUPP; 4159 /* ... with external setup is supported */ 4160 if (!(rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP)) 4161 return -EOPNOTSUPP; 4162 /* 4163 * Older wpa_supplicant versions always mark the TDLS peer 4164 * as authorized, but it shouldn't yet be. 4165 */ 4166 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_AUTHORIZED); 4167 break; 4168 default: 4169 return -EOPNOTSUPP; 4170 } 4171 4172 /* be aware of params.vlan when changing code here */ 4173 4174 err = rdev_add_station(rdev, dev, mac_addr, ¶ms); 4175 4176 if (params.vlan) 4177 dev_put(params.vlan); 4178 return err; 4179 } 4180 4181 static int nl80211_del_station(struct sk_buff *skb, struct genl_info *info) 4182 { 4183 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 4184 struct net_device *dev = info->user_ptr[1]; 4185 u8 *mac_addr = NULL; 4186 4187 if (info->attrs[NL80211_ATTR_MAC]) 4188 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]); 4189 4190 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP && 4191 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN && 4192 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT && 4193 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) 4194 return -EINVAL; 4195 4196 if (!rdev->ops->del_station) 4197 return -EOPNOTSUPP; 4198 4199 return rdev_del_station(rdev, dev, mac_addr); 4200 } 4201 4202 static int nl80211_send_mpath(struct sk_buff *msg, u32 portid, u32 seq, 4203 int flags, struct net_device *dev, 4204 u8 *dst, u8 *next_hop, 4205 struct mpath_info *pinfo) 4206 { 4207 void *hdr; 4208 struct nlattr *pinfoattr; 4209 4210 hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_STATION); 4211 if (!hdr) 4212 return -1; 4213 4214 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) || 4215 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, dst) || 4216 nla_put(msg, NL80211_ATTR_MPATH_NEXT_HOP, ETH_ALEN, next_hop) || 4217 nla_put_u32(msg, NL80211_ATTR_GENERATION, pinfo->generation)) 4218 goto nla_put_failure; 4219 4220 pinfoattr = nla_nest_start(msg, NL80211_ATTR_MPATH_INFO); 4221 if (!pinfoattr) 4222 goto nla_put_failure; 4223 if ((pinfo->filled & MPATH_INFO_FRAME_QLEN) && 4224 nla_put_u32(msg, NL80211_MPATH_INFO_FRAME_QLEN, 4225 pinfo->frame_qlen)) 4226 goto nla_put_failure; 4227 if (((pinfo->filled & MPATH_INFO_SN) && 4228 nla_put_u32(msg, NL80211_MPATH_INFO_SN, pinfo->sn)) || 4229 ((pinfo->filled & MPATH_INFO_METRIC) && 4230 nla_put_u32(msg, NL80211_MPATH_INFO_METRIC, 4231 pinfo->metric)) || 4232 ((pinfo->filled & MPATH_INFO_EXPTIME) && 4233 nla_put_u32(msg, NL80211_MPATH_INFO_EXPTIME, 4234 pinfo->exptime)) || 4235 ((pinfo->filled & MPATH_INFO_FLAGS) && 4236 nla_put_u8(msg, NL80211_MPATH_INFO_FLAGS, 4237 pinfo->flags)) || 4238 ((pinfo->filled & MPATH_INFO_DISCOVERY_TIMEOUT) && 4239 nla_put_u32(msg, NL80211_MPATH_INFO_DISCOVERY_TIMEOUT, 4240 pinfo->discovery_timeout)) || 4241 ((pinfo->filled & MPATH_INFO_DISCOVERY_RETRIES) && 4242 nla_put_u8(msg, NL80211_MPATH_INFO_DISCOVERY_RETRIES, 4243 pinfo->discovery_retries))) 4244 goto nla_put_failure; 4245 4246 nla_nest_end(msg, pinfoattr); 4247 4248 return genlmsg_end(msg, hdr); 4249 4250 nla_put_failure: 4251 genlmsg_cancel(msg, hdr); 4252 return -EMSGSIZE; 4253 } 4254 4255 static int nl80211_dump_mpath(struct sk_buff *skb, 4256 struct netlink_callback *cb) 4257 { 4258 struct mpath_info pinfo; 4259 struct cfg80211_registered_device *dev; 4260 struct wireless_dev *wdev; 4261 u8 dst[ETH_ALEN]; 4262 u8 next_hop[ETH_ALEN]; 4263 int path_idx = cb->args[2]; 4264 int err; 4265 4266 err = nl80211_prepare_wdev_dump(skb, cb, &dev, &wdev); 4267 if (err) 4268 return err; 4269 4270 if (!dev->ops->dump_mpath) { 4271 err = -EOPNOTSUPP; 4272 goto out_err; 4273 } 4274 4275 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) { 4276 err = -EOPNOTSUPP; 4277 goto out_err; 4278 } 4279 4280 while (1) { 4281 err = rdev_dump_mpath(dev, wdev->netdev, path_idx, dst, 4282 next_hop, &pinfo); 4283 if (err == -ENOENT) 4284 break; 4285 if (err) 4286 goto out_err; 4287 4288 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid, 4289 cb->nlh->nlmsg_seq, NLM_F_MULTI, 4290 wdev->netdev, dst, next_hop, 4291 &pinfo) < 0) 4292 goto out; 4293 4294 path_idx++; 4295 } 4296 4297 4298 out: 4299 cb->args[2] = path_idx; 4300 err = skb->len; 4301 out_err: 4302 nl80211_finish_wdev_dump(dev); 4303 return err; 4304 } 4305 4306 static int nl80211_get_mpath(struct sk_buff *skb, struct genl_info *info) 4307 { 4308 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 4309 int err; 4310 struct net_device *dev = info->user_ptr[1]; 4311 struct mpath_info pinfo; 4312 struct sk_buff *msg; 4313 u8 *dst = NULL; 4314 u8 next_hop[ETH_ALEN]; 4315 4316 memset(&pinfo, 0, sizeof(pinfo)); 4317 4318 if (!info->attrs[NL80211_ATTR_MAC]) 4319 return -EINVAL; 4320 4321 dst = nla_data(info->attrs[NL80211_ATTR_MAC]); 4322 4323 if (!rdev->ops->get_mpath) 4324 return -EOPNOTSUPP; 4325 4326 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT) 4327 return -EOPNOTSUPP; 4328 4329 err = rdev_get_mpath(rdev, dev, dst, next_hop, &pinfo); 4330 if (err) 4331 return err; 4332 4333 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 4334 if (!msg) 4335 return -ENOMEM; 4336 4337 if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0, 4338 dev, dst, next_hop, &pinfo) < 0) { 4339 nlmsg_free(msg); 4340 return -ENOBUFS; 4341 } 4342 4343 return genlmsg_reply(msg, info); 4344 } 4345 4346 static int nl80211_set_mpath(struct sk_buff *skb, struct genl_info *info) 4347 { 4348 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 4349 struct net_device *dev = info->user_ptr[1]; 4350 u8 *dst = NULL; 4351 u8 *next_hop = NULL; 4352 4353 if (!info->attrs[NL80211_ATTR_MAC]) 4354 return -EINVAL; 4355 4356 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]) 4357 return -EINVAL; 4358 4359 dst = nla_data(info->attrs[NL80211_ATTR_MAC]); 4360 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]); 4361 4362 if (!rdev->ops->change_mpath) 4363 return -EOPNOTSUPP; 4364 4365 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT) 4366 return -EOPNOTSUPP; 4367 4368 return rdev_change_mpath(rdev, dev, dst, next_hop); 4369 } 4370 4371 static int nl80211_new_mpath(struct sk_buff *skb, struct genl_info *info) 4372 { 4373 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 4374 struct net_device *dev = info->user_ptr[1]; 4375 u8 *dst = NULL; 4376 u8 *next_hop = NULL; 4377 4378 if (!info->attrs[NL80211_ATTR_MAC]) 4379 return -EINVAL; 4380 4381 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]) 4382 return -EINVAL; 4383 4384 dst = nla_data(info->attrs[NL80211_ATTR_MAC]); 4385 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]); 4386 4387 if (!rdev->ops->add_mpath) 4388 return -EOPNOTSUPP; 4389 4390 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT) 4391 return -EOPNOTSUPP; 4392 4393 return rdev_add_mpath(rdev, dev, dst, next_hop); 4394 } 4395 4396 static int nl80211_del_mpath(struct sk_buff *skb, struct genl_info *info) 4397 { 4398 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 4399 struct net_device *dev = info->user_ptr[1]; 4400 u8 *dst = NULL; 4401 4402 if (info->attrs[NL80211_ATTR_MAC]) 4403 dst = nla_data(info->attrs[NL80211_ATTR_MAC]); 4404 4405 if (!rdev->ops->del_mpath) 4406 return -EOPNOTSUPP; 4407 4408 return rdev_del_mpath(rdev, dev, dst); 4409 } 4410 4411 static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info) 4412 { 4413 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 4414 struct net_device *dev = info->user_ptr[1]; 4415 struct bss_parameters params; 4416 4417 memset(¶ms, 0, sizeof(params)); 4418 /* default to not changing parameters */ 4419 params.use_cts_prot = -1; 4420 params.use_short_preamble = -1; 4421 params.use_short_slot_time = -1; 4422 params.ap_isolate = -1; 4423 params.ht_opmode = -1; 4424 params.p2p_ctwindow = -1; 4425 params.p2p_opp_ps = -1; 4426 4427 if (info->attrs[NL80211_ATTR_BSS_CTS_PROT]) 4428 params.use_cts_prot = 4429 nla_get_u8(info->attrs[NL80211_ATTR_BSS_CTS_PROT]); 4430 if (info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]) 4431 params.use_short_preamble = 4432 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]); 4433 if (info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]) 4434 params.use_short_slot_time = 4435 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]); 4436 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) { 4437 params.basic_rates = 4438 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]); 4439 params.basic_rates_len = 4440 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]); 4441 } 4442 if (info->attrs[NL80211_ATTR_AP_ISOLATE]) 4443 params.ap_isolate = !!nla_get_u8(info->attrs[NL80211_ATTR_AP_ISOLATE]); 4444 if (info->attrs[NL80211_ATTR_BSS_HT_OPMODE]) 4445 params.ht_opmode = 4446 nla_get_u16(info->attrs[NL80211_ATTR_BSS_HT_OPMODE]); 4447 4448 if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) { 4449 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) 4450 return -EINVAL; 4451 params.p2p_ctwindow = 4452 nla_get_s8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]); 4453 if (params.p2p_ctwindow < 0) 4454 return -EINVAL; 4455 if (params.p2p_ctwindow != 0 && 4456 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN)) 4457 return -EINVAL; 4458 } 4459 4460 if (info->attrs[NL80211_ATTR_P2P_OPPPS]) { 4461 u8 tmp; 4462 4463 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) 4464 return -EINVAL; 4465 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]); 4466 if (tmp > 1) 4467 return -EINVAL; 4468 params.p2p_opp_ps = tmp; 4469 if (params.p2p_opp_ps && 4470 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS)) 4471 return -EINVAL; 4472 } 4473 4474 if (!rdev->ops->change_bss) 4475 return -EOPNOTSUPP; 4476 4477 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP && 4478 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) 4479 return -EOPNOTSUPP; 4480 4481 return rdev_change_bss(rdev, dev, ¶ms); 4482 } 4483 4484 static const struct nla_policy reg_rule_policy[NL80211_REG_RULE_ATTR_MAX + 1] = { 4485 [NL80211_ATTR_REG_RULE_FLAGS] = { .type = NLA_U32 }, 4486 [NL80211_ATTR_FREQ_RANGE_START] = { .type = NLA_U32 }, 4487 [NL80211_ATTR_FREQ_RANGE_END] = { .type = NLA_U32 }, 4488 [NL80211_ATTR_FREQ_RANGE_MAX_BW] = { .type = NLA_U32 }, 4489 [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN] = { .type = NLA_U32 }, 4490 [NL80211_ATTR_POWER_RULE_MAX_EIRP] = { .type = NLA_U32 }, 4491 }; 4492 4493 static int parse_reg_rule(struct nlattr *tb[], 4494 struct ieee80211_reg_rule *reg_rule) 4495 { 4496 struct ieee80211_freq_range *freq_range = ®_rule->freq_range; 4497 struct ieee80211_power_rule *power_rule = ®_rule->power_rule; 4498 4499 if (!tb[NL80211_ATTR_REG_RULE_FLAGS]) 4500 return -EINVAL; 4501 if (!tb[NL80211_ATTR_FREQ_RANGE_START]) 4502 return -EINVAL; 4503 if (!tb[NL80211_ATTR_FREQ_RANGE_END]) 4504 return -EINVAL; 4505 if (!tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]) 4506 return -EINVAL; 4507 if (!tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]) 4508 return -EINVAL; 4509 4510 reg_rule->flags = nla_get_u32(tb[NL80211_ATTR_REG_RULE_FLAGS]); 4511 4512 freq_range->start_freq_khz = 4513 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]); 4514 freq_range->end_freq_khz = 4515 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]); 4516 freq_range->max_bandwidth_khz = 4517 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]); 4518 4519 power_rule->max_eirp = 4520 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]); 4521 4522 if (tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]) 4523 power_rule->max_antenna_gain = 4524 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]); 4525 4526 return 0; 4527 } 4528 4529 static int nl80211_req_set_reg(struct sk_buff *skb, struct genl_info *info) 4530 { 4531 int r; 4532 char *data = NULL; 4533 enum nl80211_user_reg_hint_type user_reg_hint_type; 4534 4535 /* 4536 * You should only get this when cfg80211 hasn't yet initialized 4537 * completely when built-in to the kernel right between the time 4538 * window between nl80211_init() and regulatory_init(), if that is 4539 * even possible. 4540 */ 4541 if (unlikely(!rcu_access_pointer(cfg80211_regdomain))) 4542 return -EINPROGRESS; 4543 4544 if (!info->attrs[NL80211_ATTR_REG_ALPHA2]) 4545 return -EINVAL; 4546 4547 data = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]); 4548 4549 if (info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE]) 4550 user_reg_hint_type = 4551 nla_get_u32(info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE]); 4552 else 4553 user_reg_hint_type = NL80211_USER_REG_HINT_USER; 4554 4555 switch (user_reg_hint_type) { 4556 case NL80211_USER_REG_HINT_USER: 4557 case NL80211_USER_REG_HINT_CELL_BASE: 4558 break; 4559 default: 4560 return -EINVAL; 4561 } 4562 4563 r = regulatory_hint_user(data, user_reg_hint_type); 4564 4565 return r; 4566 } 4567 4568 static int nl80211_get_mesh_config(struct sk_buff *skb, 4569 struct genl_info *info) 4570 { 4571 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 4572 struct net_device *dev = info->user_ptr[1]; 4573 struct wireless_dev *wdev = dev->ieee80211_ptr; 4574 struct mesh_config cur_params; 4575 int err = 0; 4576 void *hdr; 4577 struct nlattr *pinfoattr; 4578 struct sk_buff *msg; 4579 4580 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) 4581 return -EOPNOTSUPP; 4582 4583 if (!rdev->ops->get_mesh_config) 4584 return -EOPNOTSUPP; 4585 4586 wdev_lock(wdev); 4587 /* If not connected, get default parameters */ 4588 if (!wdev->mesh_id_len) 4589 memcpy(&cur_params, &default_mesh_config, sizeof(cur_params)); 4590 else 4591 err = rdev_get_mesh_config(rdev, dev, &cur_params); 4592 wdev_unlock(wdev); 4593 4594 if (err) 4595 return err; 4596 4597 /* Draw up a netlink message to send back */ 4598 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 4599 if (!msg) 4600 return -ENOMEM; 4601 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0, 4602 NL80211_CMD_GET_MESH_CONFIG); 4603 if (!hdr) 4604 goto out; 4605 pinfoattr = nla_nest_start(msg, NL80211_ATTR_MESH_CONFIG); 4606 if (!pinfoattr) 4607 goto nla_put_failure; 4608 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) || 4609 nla_put_u16(msg, NL80211_MESHCONF_RETRY_TIMEOUT, 4610 cur_params.dot11MeshRetryTimeout) || 4611 nla_put_u16(msg, NL80211_MESHCONF_CONFIRM_TIMEOUT, 4612 cur_params.dot11MeshConfirmTimeout) || 4613 nla_put_u16(msg, NL80211_MESHCONF_HOLDING_TIMEOUT, 4614 cur_params.dot11MeshHoldingTimeout) || 4615 nla_put_u16(msg, NL80211_MESHCONF_MAX_PEER_LINKS, 4616 cur_params.dot11MeshMaxPeerLinks) || 4617 nla_put_u8(msg, NL80211_MESHCONF_MAX_RETRIES, 4618 cur_params.dot11MeshMaxRetries) || 4619 nla_put_u8(msg, NL80211_MESHCONF_TTL, 4620 cur_params.dot11MeshTTL) || 4621 nla_put_u8(msg, NL80211_MESHCONF_ELEMENT_TTL, 4622 cur_params.element_ttl) || 4623 nla_put_u8(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS, 4624 cur_params.auto_open_plinks) || 4625 nla_put_u32(msg, NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR, 4626 cur_params.dot11MeshNbrOffsetMaxNeighbor) || 4627 nla_put_u8(msg, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES, 4628 cur_params.dot11MeshHWMPmaxPREQretries) || 4629 nla_put_u32(msg, NL80211_MESHCONF_PATH_REFRESH_TIME, 4630 cur_params.path_refresh_time) || 4631 nla_put_u16(msg, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT, 4632 cur_params.min_discovery_timeout) || 4633 nla_put_u32(msg, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT, 4634 cur_params.dot11MeshHWMPactivePathTimeout) || 4635 nla_put_u16(msg, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL, 4636 cur_params.dot11MeshHWMPpreqMinInterval) || 4637 nla_put_u16(msg, NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL, 4638 cur_params.dot11MeshHWMPperrMinInterval) || 4639 nla_put_u16(msg, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME, 4640 cur_params.dot11MeshHWMPnetDiameterTraversalTime) || 4641 nla_put_u8(msg, NL80211_MESHCONF_HWMP_ROOTMODE, 4642 cur_params.dot11MeshHWMPRootMode) || 4643 nla_put_u16(msg, NL80211_MESHCONF_HWMP_RANN_INTERVAL, 4644 cur_params.dot11MeshHWMPRannInterval) || 4645 nla_put_u8(msg, NL80211_MESHCONF_GATE_ANNOUNCEMENTS, 4646 cur_params.dot11MeshGateAnnouncementProtocol) || 4647 nla_put_u8(msg, NL80211_MESHCONF_FORWARDING, 4648 cur_params.dot11MeshForwarding) || 4649 nla_put_u32(msg, NL80211_MESHCONF_RSSI_THRESHOLD, 4650 cur_params.rssi_threshold) || 4651 nla_put_u32(msg, NL80211_MESHCONF_HT_OPMODE, 4652 cur_params.ht_opmode) || 4653 nla_put_u32(msg, NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT, 4654 cur_params.dot11MeshHWMPactivePathToRootTimeout) || 4655 nla_put_u16(msg, NL80211_MESHCONF_HWMP_ROOT_INTERVAL, 4656 cur_params.dot11MeshHWMProotInterval) || 4657 nla_put_u16(msg, NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL, 4658 cur_params.dot11MeshHWMPconfirmationInterval) || 4659 nla_put_u32(msg, NL80211_MESHCONF_POWER_MODE, 4660 cur_params.power_mode) || 4661 nla_put_u16(msg, NL80211_MESHCONF_AWAKE_WINDOW, 4662 cur_params.dot11MeshAwakeWindowDuration) || 4663 nla_put_u32(msg, NL80211_MESHCONF_PLINK_TIMEOUT, 4664 cur_params.plink_timeout)) 4665 goto nla_put_failure; 4666 nla_nest_end(msg, pinfoattr); 4667 genlmsg_end(msg, hdr); 4668 return genlmsg_reply(msg, info); 4669 4670 nla_put_failure: 4671 genlmsg_cancel(msg, hdr); 4672 out: 4673 nlmsg_free(msg); 4674 return -ENOBUFS; 4675 } 4676 4677 static const struct nla_policy nl80211_meshconf_params_policy[NL80211_MESHCONF_ATTR_MAX+1] = { 4678 [NL80211_MESHCONF_RETRY_TIMEOUT] = { .type = NLA_U16 }, 4679 [NL80211_MESHCONF_CONFIRM_TIMEOUT] = { .type = NLA_U16 }, 4680 [NL80211_MESHCONF_HOLDING_TIMEOUT] = { .type = NLA_U16 }, 4681 [NL80211_MESHCONF_MAX_PEER_LINKS] = { .type = NLA_U16 }, 4682 [NL80211_MESHCONF_MAX_RETRIES] = { .type = NLA_U8 }, 4683 [NL80211_MESHCONF_TTL] = { .type = NLA_U8 }, 4684 [NL80211_MESHCONF_ELEMENT_TTL] = { .type = NLA_U8 }, 4685 [NL80211_MESHCONF_AUTO_OPEN_PLINKS] = { .type = NLA_U8 }, 4686 [NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR] = { .type = NLA_U32 }, 4687 [NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES] = { .type = NLA_U8 }, 4688 [NL80211_MESHCONF_PATH_REFRESH_TIME] = { .type = NLA_U32 }, 4689 [NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT] = { .type = NLA_U16 }, 4690 [NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT] = { .type = NLA_U32 }, 4691 [NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL] = { .type = NLA_U16 }, 4692 [NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL] = { .type = NLA_U16 }, 4693 [NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME] = { .type = NLA_U16 }, 4694 [NL80211_MESHCONF_HWMP_ROOTMODE] = { .type = NLA_U8 }, 4695 [NL80211_MESHCONF_HWMP_RANN_INTERVAL] = { .type = NLA_U16 }, 4696 [NL80211_MESHCONF_GATE_ANNOUNCEMENTS] = { .type = NLA_U8 }, 4697 [NL80211_MESHCONF_FORWARDING] = { .type = NLA_U8 }, 4698 [NL80211_MESHCONF_RSSI_THRESHOLD] = { .type = NLA_U32 }, 4699 [NL80211_MESHCONF_HT_OPMODE] = { .type = NLA_U16 }, 4700 [NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT] = { .type = NLA_U32 }, 4701 [NL80211_MESHCONF_HWMP_ROOT_INTERVAL] = { .type = NLA_U16 }, 4702 [NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL] = { .type = NLA_U16 }, 4703 [NL80211_MESHCONF_POWER_MODE] = { .type = NLA_U32 }, 4704 [NL80211_MESHCONF_AWAKE_WINDOW] = { .type = NLA_U16 }, 4705 [NL80211_MESHCONF_PLINK_TIMEOUT] = { .type = NLA_U32 }, 4706 }; 4707 4708 static const struct nla_policy 4709 nl80211_mesh_setup_params_policy[NL80211_MESH_SETUP_ATTR_MAX+1] = { 4710 [NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC] = { .type = NLA_U8 }, 4711 [NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL] = { .type = NLA_U8 }, 4712 [NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC] = { .type = NLA_U8 }, 4713 [NL80211_MESH_SETUP_USERSPACE_AUTH] = { .type = NLA_FLAG }, 4714 [NL80211_MESH_SETUP_AUTH_PROTOCOL] = { .type = NLA_U8 }, 4715 [NL80211_MESH_SETUP_USERSPACE_MPM] = { .type = NLA_FLAG }, 4716 [NL80211_MESH_SETUP_IE] = { .type = NLA_BINARY, 4717 .len = IEEE80211_MAX_DATA_LEN }, 4718 [NL80211_MESH_SETUP_USERSPACE_AMPE] = { .type = NLA_FLAG }, 4719 }; 4720 4721 static int nl80211_parse_mesh_config(struct genl_info *info, 4722 struct mesh_config *cfg, 4723 u32 *mask_out) 4724 { 4725 struct nlattr *tb[NL80211_MESHCONF_ATTR_MAX + 1]; 4726 u32 mask = 0; 4727 4728 #define FILL_IN_MESH_PARAM_IF_SET(tb, cfg, param, min, max, mask, attr, fn) \ 4729 do { \ 4730 if (tb[attr]) { \ 4731 if (fn(tb[attr]) < min || fn(tb[attr]) > max) \ 4732 return -EINVAL; \ 4733 cfg->param = fn(tb[attr]); \ 4734 mask |= (1 << (attr - 1)); \ 4735 } \ 4736 } while (0) 4737 4738 4739 if (!info->attrs[NL80211_ATTR_MESH_CONFIG]) 4740 return -EINVAL; 4741 if (nla_parse_nested(tb, NL80211_MESHCONF_ATTR_MAX, 4742 info->attrs[NL80211_ATTR_MESH_CONFIG], 4743 nl80211_meshconf_params_policy)) 4744 return -EINVAL; 4745 4746 /* This makes sure that there aren't more than 32 mesh config 4747 * parameters (otherwise our bitfield scheme would not work.) */ 4748 BUILD_BUG_ON(NL80211_MESHCONF_ATTR_MAX > 32); 4749 4750 /* Fill in the params struct */ 4751 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshRetryTimeout, 1, 255, 4752 mask, NL80211_MESHCONF_RETRY_TIMEOUT, 4753 nla_get_u16); 4754 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConfirmTimeout, 1, 255, 4755 mask, NL80211_MESHCONF_CONFIRM_TIMEOUT, 4756 nla_get_u16); 4757 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHoldingTimeout, 1, 255, 4758 mask, NL80211_MESHCONF_HOLDING_TIMEOUT, 4759 nla_get_u16); 4760 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxPeerLinks, 0, 255, 4761 mask, NL80211_MESHCONF_MAX_PEER_LINKS, 4762 nla_get_u16); 4763 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxRetries, 0, 16, 4764 mask, NL80211_MESHCONF_MAX_RETRIES, 4765 nla_get_u8); 4766 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshTTL, 1, 255, 4767 mask, NL80211_MESHCONF_TTL, nla_get_u8); 4768 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, element_ttl, 1, 255, 4769 mask, NL80211_MESHCONF_ELEMENT_TTL, 4770 nla_get_u8); 4771 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, auto_open_plinks, 0, 1, 4772 mask, NL80211_MESHCONF_AUTO_OPEN_PLINKS, 4773 nla_get_u8); 4774 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshNbrOffsetMaxNeighbor, 4775 1, 255, mask, 4776 NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR, 4777 nla_get_u32); 4778 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPmaxPREQretries, 0, 255, 4779 mask, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES, 4780 nla_get_u8); 4781 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, path_refresh_time, 1, 65535, 4782 mask, NL80211_MESHCONF_PATH_REFRESH_TIME, 4783 nla_get_u32); 4784 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, min_discovery_timeout, 1, 65535, 4785 mask, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT, 4786 nla_get_u16); 4787 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathTimeout, 4788 1, 65535, mask, 4789 NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT, 4790 nla_get_u32); 4791 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPpreqMinInterval, 4792 1, 65535, mask, 4793 NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL, 4794 nla_get_u16); 4795 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPperrMinInterval, 4796 1, 65535, mask, 4797 NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL, 4798 nla_get_u16); 4799 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, 4800 dot11MeshHWMPnetDiameterTraversalTime, 4801 1, 65535, mask, 4802 NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME, 4803 nla_get_u16); 4804 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRootMode, 0, 4, 4805 mask, NL80211_MESHCONF_HWMP_ROOTMODE, 4806 nla_get_u8); 4807 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRannInterval, 1, 65535, 4808 mask, NL80211_MESHCONF_HWMP_RANN_INTERVAL, 4809 nla_get_u16); 4810 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, 4811 dot11MeshGateAnnouncementProtocol, 0, 1, 4812 mask, NL80211_MESHCONF_GATE_ANNOUNCEMENTS, 4813 nla_get_u8); 4814 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshForwarding, 0, 1, 4815 mask, NL80211_MESHCONF_FORWARDING, 4816 nla_get_u8); 4817 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, rssi_threshold, -255, 0, 4818 mask, NL80211_MESHCONF_RSSI_THRESHOLD, 4819 nla_get_s32); 4820 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, ht_opmode, 0, 16, 4821 mask, NL80211_MESHCONF_HT_OPMODE, 4822 nla_get_u16); 4823 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathToRootTimeout, 4824 1, 65535, mask, 4825 NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT, 4826 nla_get_u32); 4827 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMProotInterval, 1, 65535, 4828 mask, NL80211_MESHCONF_HWMP_ROOT_INTERVAL, 4829 nla_get_u16); 4830 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, 4831 dot11MeshHWMPconfirmationInterval, 4832 1, 65535, mask, 4833 NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL, 4834 nla_get_u16); 4835 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, power_mode, 4836 NL80211_MESH_POWER_ACTIVE, 4837 NL80211_MESH_POWER_MAX, 4838 mask, NL80211_MESHCONF_POWER_MODE, 4839 nla_get_u32); 4840 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshAwakeWindowDuration, 4841 0, 65535, mask, 4842 NL80211_MESHCONF_AWAKE_WINDOW, nla_get_u16); 4843 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, plink_timeout, 1, 0xffffffff, 4844 mask, NL80211_MESHCONF_PLINK_TIMEOUT, 4845 nla_get_u32); 4846 if (mask_out) 4847 *mask_out = mask; 4848 4849 return 0; 4850 4851 #undef FILL_IN_MESH_PARAM_IF_SET 4852 } 4853 4854 static int nl80211_parse_mesh_setup(struct genl_info *info, 4855 struct mesh_setup *setup) 4856 { 4857 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 4858 struct nlattr *tb[NL80211_MESH_SETUP_ATTR_MAX + 1]; 4859 4860 if (!info->attrs[NL80211_ATTR_MESH_SETUP]) 4861 return -EINVAL; 4862 if (nla_parse_nested(tb, NL80211_MESH_SETUP_ATTR_MAX, 4863 info->attrs[NL80211_ATTR_MESH_SETUP], 4864 nl80211_mesh_setup_params_policy)) 4865 return -EINVAL; 4866 4867 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC]) 4868 setup->sync_method = 4869 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])) ? 4870 IEEE80211_SYNC_METHOD_VENDOR : 4871 IEEE80211_SYNC_METHOD_NEIGHBOR_OFFSET; 4872 4873 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL]) 4874 setup->path_sel_proto = 4875 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])) ? 4876 IEEE80211_PATH_PROTOCOL_VENDOR : 4877 IEEE80211_PATH_PROTOCOL_HWMP; 4878 4879 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC]) 4880 setup->path_metric = 4881 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])) ? 4882 IEEE80211_PATH_METRIC_VENDOR : 4883 IEEE80211_PATH_METRIC_AIRTIME; 4884 4885 4886 if (tb[NL80211_MESH_SETUP_IE]) { 4887 struct nlattr *ieattr = 4888 tb[NL80211_MESH_SETUP_IE]; 4889 if (!is_valid_ie_attr(ieattr)) 4890 return -EINVAL; 4891 setup->ie = nla_data(ieattr); 4892 setup->ie_len = nla_len(ieattr); 4893 } 4894 if (tb[NL80211_MESH_SETUP_USERSPACE_MPM] && 4895 !(rdev->wiphy.features & NL80211_FEATURE_USERSPACE_MPM)) 4896 return -EINVAL; 4897 setup->user_mpm = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_MPM]); 4898 setup->is_authenticated = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AUTH]); 4899 setup->is_secure = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AMPE]); 4900 if (setup->is_secure) 4901 setup->user_mpm = true; 4902 4903 if (tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]) { 4904 if (!setup->user_mpm) 4905 return -EINVAL; 4906 setup->auth_id = 4907 nla_get_u8(tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]); 4908 } 4909 4910 return 0; 4911 } 4912 4913 static int nl80211_update_mesh_config(struct sk_buff *skb, 4914 struct genl_info *info) 4915 { 4916 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 4917 struct net_device *dev = info->user_ptr[1]; 4918 struct wireless_dev *wdev = dev->ieee80211_ptr; 4919 struct mesh_config cfg; 4920 u32 mask; 4921 int err; 4922 4923 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) 4924 return -EOPNOTSUPP; 4925 4926 if (!rdev->ops->update_mesh_config) 4927 return -EOPNOTSUPP; 4928 4929 err = nl80211_parse_mesh_config(info, &cfg, &mask); 4930 if (err) 4931 return err; 4932 4933 wdev_lock(wdev); 4934 if (!wdev->mesh_id_len) 4935 err = -ENOLINK; 4936 4937 if (!err) 4938 err = rdev_update_mesh_config(rdev, dev, mask, &cfg); 4939 4940 wdev_unlock(wdev); 4941 4942 return err; 4943 } 4944 4945 static int nl80211_get_reg(struct sk_buff *skb, struct genl_info *info) 4946 { 4947 const struct ieee80211_regdomain *regdom; 4948 struct sk_buff *msg; 4949 void *hdr = NULL; 4950 struct nlattr *nl_reg_rules; 4951 unsigned int i; 4952 4953 if (!cfg80211_regdomain) 4954 return -EINVAL; 4955 4956 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 4957 if (!msg) 4958 return -ENOBUFS; 4959 4960 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0, 4961 NL80211_CMD_GET_REG); 4962 if (!hdr) 4963 goto put_failure; 4964 4965 if (reg_last_request_cell_base() && 4966 nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE, 4967 NL80211_USER_REG_HINT_CELL_BASE)) 4968 goto nla_put_failure; 4969 4970 rcu_read_lock(); 4971 regdom = rcu_dereference(cfg80211_regdomain); 4972 4973 if (nla_put_string(msg, NL80211_ATTR_REG_ALPHA2, regdom->alpha2) || 4974 (regdom->dfs_region && 4975 nla_put_u8(msg, NL80211_ATTR_DFS_REGION, regdom->dfs_region))) 4976 goto nla_put_failure_rcu; 4977 4978 nl_reg_rules = nla_nest_start(msg, NL80211_ATTR_REG_RULES); 4979 if (!nl_reg_rules) 4980 goto nla_put_failure_rcu; 4981 4982 for (i = 0; i < regdom->n_reg_rules; i++) { 4983 struct nlattr *nl_reg_rule; 4984 const struct ieee80211_reg_rule *reg_rule; 4985 const struct ieee80211_freq_range *freq_range; 4986 const struct ieee80211_power_rule *power_rule; 4987 4988 reg_rule = ®dom->reg_rules[i]; 4989 freq_range = ®_rule->freq_range; 4990 power_rule = ®_rule->power_rule; 4991 4992 nl_reg_rule = nla_nest_start(msg, i); 4993 if (!nl_reg_rule) 4994 goto nla_put_failure_rcu; 4995 4996 if (nla_put_u32(msg, NL80211_ATTR_REG_RULE_FLAGS, 4997 reg_rule->flags) || 4998 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_START, 4999 freq_range->start_freq_khz) || 5000 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_END, 5001 freq_range->end_freq_khz) || 5002 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_MAX_BW, 5003 freq_range->max_bandwidth_khz) || 5004 nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN, 5005 power_rule->max_antenna_gain) || 5006 nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_EIRP, 5007 power_rule->max_eirp)) 5008 goto nla_put_failure_rcu; 5009 5010 nla_nest_end(msg, nl_reg_rule); 5011 } 5012 rcu_read_unlock(); 5013 5014 nla_nest_end(msg, nl_reg_rules); 5015 5016 genlmsg_end(msg, hdr); 5017 return genlmsg_reply(msg, info); 5018 5019 nla_put_failure_rcu: 5020 rcu_read_unlock(); 5021 nla_put_failure: 5022 genlmsg_cancel(msg, hdr); 5023 put_failure: 5024 nlmsg_free(msg); 5025 return -EMSGSIZE; 5026 } 5027 5028 static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info) 5029 { 5030 struct nlattr *tb[NL80211_REG_RULE_ATTR_MAX + 1]; 5031 struct nlattr *nl_reg_rule; 5032 char *alpha2 = NULL; 5033 int rem_reg_rules = 0, r = 0; 5034 u32 num_rules = 0, rule_idx = 0, size_of_regd; 5035 u8 dfs_region = 0; 5036 struct ieee80211_regdomain *rd = NULL; 5037 5038 if (!info->attrs[NL80211_ATTR_REG_ALPHA2]) 5039 return -EINVAL; 5040 5041 if (!info->attrs[NL80211_ATTR_REG_RULES]) 5042 return -EINVAL; 5043 5044 alpha2 = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]); 5045 5046 if (info->attrs[NL80211_ATTR_DFS_REGION]) 5047 dfs_region = nla_get_u8(info->attrs[NL80211_ATTR_DFS_REGION]); 5048 5049 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES], 5050 rem_reg_rules) { 5051 num_rules++; 5052 if (num_rules > NL80211_MAX_SUPP_REG_RULES) 5053 return -EINVAL; 5054 } 5055 5056 size_of_regd = sizeof(struct ieee80211_regdomain) + 5057 num_rules * sizeof(struct ieee80211_reg_rule); 5058 5059 rd = kzalloc(size_of_regd, GFP_KERNEL); 5060 if (!rd) 5061 return -ENOMEM; 5062 5063 rd->n_reg_rules = num_rules; 5064 rd->alpha2[0] = alpha2[0]; 5065 rd->alpha2[1] = alpha2[1]; 5066 5067 /* 5068 * Disable DFS master mode if the DFS region was 5069 * not supported or known on this kernel. 5070 */ 5071 if (reg_supported_dfs_region(dfs_region)) 5072 rd->dfs_region = dfs_region; 5073 5074 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES], 5075 rem_reg_rules) { 5076 nla_parse(tb, NL80211_REG_RULE_ATTR_MAX, 5077 nla_data(nl_reg_rule), nla_len(nl_reg_rule), 5078 reg_rule_policy); 5079 r = parse_reg_rule(tb, &rd->reg_rules[rule_idx]); 5080 if (r) 5081 goto bad_reg; 5082 5083 rule_idx++; 5084 5085 if (rule_idx > NL80211_MAX_SUPP_REG_RULES) { 5086 r = -EINVAL; 5087 goto bad_reg; 5088 } 5089 } 5090 5091 r = set_regdom(rd); 5092 /* set_regdom took ownership */ 5093 rd = NULL; 5094 5095 bad_reg: 5096 kfree(rd); 5097 return r; 5098 } 5099 5100 static int validate_scan_freqs(struct nlattr *freqs) 5101 { 5102 struct nlattr *attr1, *attr2; 5103 int n_channels = 0, tmp1, tmp2; 5104 5105 nla_for_each_nested(attr1, freqs, tmp1) { 5106 n_channels++; 5107 /* 5108 * Some hardware has a limited channel list for 5109 * scanning, and it is pretty much nonsensical 5110 * to scan for a channel twice, so disallow that 5111 * and don't require drivers to check that the 5112 * channel list they get isn't longer than what 5113 * they can scan, as long as they can scan all 5114 * the channels they registered at once. 5115 */ 5116 nla_for_each_nested(attr2, freqs, tmp2) 5117 if (attr1 != attr2 && 5118 nla_get_u32(attr1) == nla_get_u32(attr2)) 5119 return 0; 5120 } 5121 5122 return n_channels; 5123 } 5124 5125 static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info) 5126 { 5127 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 5128 struct wireless_dev *wdev = info->user_ptr[1]; 5129 struct cfg80211_scan_request *request; 5130 struct nlattr *attr; 5131 struct wiphy *wiphy; 5132 int err, tmp, n_ssids = 0, n_channels, i; 5133 size_t ie_len; 5134 5135 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE])) 5136 return -EINVAL; 5137 5138 wiphy = &rdev->wiphy; 5139 5140 if (!rdev->ops->scan) 5141 return -EOPNOTSUPP; 5142 5143 if (rdev->scan_req) { 5144 err = -EBUSY; 5145 goto unlock; 5146 } 5147 5148 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) { 5149 n_channels = validate_scan_freqs( 5150 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]); 5151 if (!n_channels) { 5152 err = -EINVAL; 5153 goto unlock; 5154 } 5155 } else { 5156 enum ieee80211_band band; 5157 n_channels = 0; 5158 5159 for (band = 0; band < IEEE80211_NUM_BANDS; band++) 5160 if (wiphy->bands[band]) 5161 n_channels += wiphy->bands[band]->n_channels; 5162 } 5163 5164 if (info->attrs[NL80211_ATTR_SCAN_SSIDS]) 5165 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) 5166 n_ssids++; 5167 5168 if (n_ssids > wiphy->max_scan_ssids) { 5169 err = -EINVAL; 5170 goto unlock; 5171 } 5172 5173 if (info->attrs[NL80211_ATTR_IE]) 5174 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); 5175 else 5176 ie_len = 0; 5177 5178 if (ie_len > wiphy->max_scan_ie_len) { 5179 err = -EINVAL; 5180 goto unlock; 5181 } 5182 5183 request = kzalloc(sizeof(*request) 5184 + sizeof(*request->ssids) * n_ssids 5185 + sizeof(*request->channels) * n_channels 5186 + ie_len, GFP_KERNEL); 5187 if (!request) { 5188 err = -ENOMEM; 5189 goto unlock; 5190 } 5191 5192 if (n_ssids) 5193 request->ssids = (void *)&request->channels[n_channels]; 5194 request->n_ssids = n_ssids; 5195 if (ie_len) { 5196 if (request->ssids) 5197 request->ie = (void *)(request->ssids + n_ssids); 5198 else 5199 request->ie = (void *)(request->channels + n_channels); 5200 } 5201 5202 i = 0; 5203 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) { 5204 /* user specified, bail out if channel not found */ 5205 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_FREQUENCIES], tmp) { 5206 struct ieee80211_channel *chan; 5207 5208 chan = ieee80211_get_channel(wiphy, nla_get_u32(attr)); 5209 5210 if (!chan) { 5211 err = -EINVAL; 5212 goto out_free; 5213 } 5214 5215 /* ignore disabled channels */ 5216 if (chan->flags & IEEE80211_CHAN_DISABLED) 5217 continue; 5218 5219 request->channels[i] = chan; 5220 i++; 5221 } 5222 } else { 5223 enum ieee80211_band band; 5224 5225 /* all channels */ 5226 for (band = 0; band < IEEE80211_NUM_BANDS; band++) { 5227 int j; 5228 if (!wiphy->bands[band]) 5229 continue; 5230 for (j = 0; j < wiphy->bands[band]->n_channels; j++) { 5231 struct ieee80211_channel *chan; 5232 5233 chan = &wiphy->bands[band]->channels[j]; 5234 5235 if (chan->flags & IEEE80211_CHAN_DISABLED) 5236 continue; 5237 5238 request->channels[i] = chan; 5239 i++; 5240 } 5241 } 5242 } 5243 5244 if (!i) { 5245 err = -EINVAL; 5246 goto out_free; 5247 } 5248 5249 request->n_channels = i; 5250 5251 i = 0; 5252 if (info->attrs[NL80211_ATTR_SCAN_SSIDS]) { 5253 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) { 5254 if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) { 5255 err = -EINVAL; 5256 goto out_free; 5257 } 5258 request->ssids[i].ssid_len = nla_len(attr); 5259 memcpy(request->ssids[i].ssid, nla_data(attr), nla_len(attr)); 5260 i++; 5261 } 5262 } 5263 5264 if (info->attrs[NL80211_ATTR_IE]) { 5265 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); 5266 memcpy((void *)request->ie, 5267 nla_data(info->attrs[NL80211_ATTR_IE]), 5268 request->ie_len); 5269 } 5270 5271 for (i = 0; i < IEEE80211_NUM_BANDS; i++) 5272 if (wiphy->bands[i]) 5273 request->rates[i] = 5274 (1 << wiphy->bands[i]->n_bitrates) - 1; 5275 5276 if (info->attrs[NL80211_ATTR_SCAN_SUPP_RATES]) { 5277 nla_for_each_nested(attr, 5278 info->attrs[NL80211_ATTR_SCAN_SUPP_RATES], 5279 tmp) { 5280 enum ieee80211_band band = nla_type(attr); 5281 5282 if (band < 0 || band >= IEEE80211_NUM_BANDS) { 5283 err = -EINVAL; 5284 goto out_free; 5285 } 5286 err = ieee80211_get_ratemask(wiphy->bands[band], 5287 nla_data(attr), 5288 nla_len(attr), 5289 &request->rates[band]); 5290 if (err) 5291 goto out_free; 5292 } 5293 } 5294 5295 if (info->attrs[NL80211_ATTR_SCAN_FLAGS]) { 5296 request->flags = nla_get_u32( 5297 info->attrs[NL80211_ATTR_SCAN_FLAGS]); 5298 if (((request->flags & NL80211_SCAN_FLAG_LOW_PRIORITY) && 5299 !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) || 5300 ((request->flags & NL80211_SCAN_FLAG_FLUSH) && 5301 !(wiphy->features & NL80211_FEATURE_SCAN_FLUSH))) { 5302 err = -EOPNOTSUPP; 5303 goto out_free; 5304 } 5305 } 5306 5307 request->no_cck = 5308 nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]); 5309 5310 request->wdev = wdev; 5311 request->wiphy = &rdev->wiphy; 5312 request->scan_start = jiffies; 5313 5314 rdev->scan_req = request; 5315 err = rdev_scan(rdev, request); 5316 5317 if (!err) { 5318 nl80211_send_scan_start(rdev, wdev); 5319 if (wdev->netdev) 5320 dev_hold(wdev->netdev); 5321 } else { 5322 out_free: 5323 rdev->scan_req = NULL; 5324 kfree(request); 5325 } 5326 5327 unlock: 5328 return err; 5329 } 5330 5331 static int nl80211_start_sched_scan(struct sk_buff *skb, 5332 struct genl_info *info) 5333 { 5334 struct cfg80211_sched_scan_request *request; 5335 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 5336 struct net_device *dev = info->user_ptr[1]; 5337 struct nlattr *attr; 5338 struct wiphy *wiphy; 5339 int err, tmp, n_ssids = 0, n_match_sets = 0, n_channels, i; 5340 u32 interval; 5341 enum ieee80211_band band; 5342 size_t ie_len; 5343 struct nlattr *tb[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1]; 5344 5345 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) || 5346 !rdev->ops->sched_scan_start) 5347 return -EOPNOTSUPP; 5348 5349 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE])) 5350 return -EINVAL; 5351 5352 if (!info->attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL]) 5353 return -EINVAL; 5354 5355 interval = nla_get_u32(info->attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL]); 5356 if (interval == 0) 5357 return -EINVAL; 5358 5359 wiphy = &rdev->wiphy; 5360 5361 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) { 5362 n_channels = validate_scan_freqs( 5363 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]); 5364 if (!n_channels) 5365 return -EINVAL; 5366 } else { 5367 n_channels = 0; 5368 5369 for (band = 0; band < IEEE80211_NUM_BANDS; band++) 5370 if (wiphy->bands[band]) 5371 n_channels += wiphy->bands[band]->n_channels; 5372 } 5373 5374 if (info->attrs[NL80211_ATTR_SCAN_SSIDS]) 5375 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], 5376 tmp) 5377 n_ssids++; 5378 5379 if (n_ssids > wiphy->max_sched_scan_ssids) 5380 return -EINVAL; 5381 5382 if (info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) 5383 nla_for_each_nested(attr, 5384 info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH], 5385 tmp) 5386 n_match_sets++; 5387 5388 if (n_match_sets > wiphy->max_match_sets) 5389 return -EINVAL; 5390 5391 if (info->attrs[NL80211_ATTR_IE]) 5392 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); 5393 else 5394 ie_len = 0; 5395 5396 if (ie_len > wiphy->max_sched_scan_ie_len) 5397 return -EINVAL; 5398 5399 if (rdev->sched_scan_req) { 5400 err = -EINPROGRESS; 5401 goto out; 5402 } 5403 5404 request = kzalloc(sizeof(*request) 5405 + sizeof(*request->ssids) * n_ssids 5406 + sizeof(*request->match_sets) * n_match_sets 5407 + sizeof(*request->channels) * n_channels 5408 + ie_len, GFP_KERNEL); 5409 if (!request) { 5410 err = -ENOMEM; 5411 goto out; 5412 } 5413 5414 if (n_ssids) 5415 request->ssids = (void *)&request->channels[n_channels]; 5416 request->n_ssids = n_ssids; 5417 if (ie_len) { 5418 if (request->ssids) 5419 request->ie = (void *)(request->ssids + n_ssids); 5420 else 5421 request->ie = (void *)(request->channels + n_channels); 5422 } 5423 5424 if (n_match_sets) { 5425 if (request->ie) 5426 request->match_sets = (void *)(request->ie + ie_len); 5427 else if (request->ssids) 5428 request->match_sets = 5429 (void *)(request->ssids + n_ssids); 5430 else 5431 request->match_sets = 5432 (void *)(request->channels + n_channels); 5433 } 5434 request->n_match_sets = n_match_sets; 5435 5436 i = 0; 5437 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) { 5438 /* user specified, bail out if channel not found */ 5439 nla_for_each_nested(attr, 5440 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES], 5441 tmp) { 5442 struct ieee80211_channel *chan; 5443 5444 chan = ieee80211_get_channel(wiphy, nla_get_u32(attr)); 5445 5446 if (!chan) { 5447 err = -EINVAL; 5448 goto out_free; 5449 } 5450 5451 /* ignore disabled channels */ 5452 if (chan->flags & IEEE80211_CHAN_DISABLED) 5453 continue; 5454 5455 request->channels[i] = chan; 5456 i++; 5457 } 5458 } else { 5459 /* all channels */ 5460 for (band = 0; band < IEEE80211_NUM_BANDS; band++) { 5461 int j; 5462 if (!wiphy->bands[band]) 5463 continue; 5464 for (j = 0; j < wiphy->bands[band]->n_channels; j++) { 5465 struct ieee80211_channel *chan; 5466 5467 chan = &wiphy->bands[band]->channels[j]; 5468 5469 if (chan->flags & IEEE80211_CHAN_DISABLED) 5470 continue; 5471 5472 request->channels[i] = chan; 5473 i++; 5474 } 5475 } 5476 } 5477 5478 if (!i) { 5479 err = -EINVAL; 5480 goto out_free; 5481 } 5482 5483 request->n_channels = i; 5484 5485 i = 0; 5486 if (info->attrs[NL80211_ATTR_SCAN_SSIDS]) { 5487 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], 5488 tmp) { 5489 if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) { 5490 err = -EINVAL; 5491 goto out_free; 5492 } 5493 request->ssids[i].ssid_len = nla_len(attr); 5494 memcpy(request->ssids[i].ssid, nla_data(attr), 5495 nla_len(attr)); 5496 i++; 5497 } 5498 } 5499 5500 i = 0; 5501 if (info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) { 5502 nla_for_each_nested(attr, 5503 info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH], 5504 tmp) { 5505 struct nlattr *ssid, *rssi; 5506 5507 nla_parse(tb, NL80211_SCHED_SCAN_MATCH_ATTR_MAX, 5508 nla_data(attr), nla_len(attr), 5509 nl80211_match_policy); 5510 ssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID]; 5511 if (ssid) { 5512 if (nla_len(ssid) > IEEE80211_MAX_SSID_LEN) { 5513 err = -EINVAL; 5514 goto out_free; 5515 } 5516 memcpy(request->match_sets[i].ssid.ssid, 5517 nla_data(ssid), nla_len(ssid)); 5518 request->match_sets[i].ssid.ssid_len = 5519 nla_len(ssid); 5520 } 5521 rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI]; 5522 if (rssi) 5523 request->rssi_thold = nla_get_u32(rssi); 5524 else 5525 request->rssi_thold = 5526 NL80211_SCAN_RSSI_THOLD_OFF; 5527 i++; 5528 } 5529 } 5530 5531 if (info->attrs[NL80211_ATTR_IE]) { 5532 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); 5533 memcpy((void *)request->ie, 5534 nla_data(info->attrs[NL80211_ATTR_IE]), 5535 request->ie_len); 5536 } 5537 5538 if (info->attrs[NL80211_ATTR_SCAN_FLAGS]) { 5539 request->flags = nla_get_u32( 5540 info->attrs[NL80211_ATTR_SCAN_FLAGS]); 5541 if (((request->flags & NL80211_SCAN_FLAG_LOW_PRIORITY) && 5542 !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) || 5543 ((request->flags & NL80211_SCAN_FLAG_FLUSH) && 5544 !(wiphy->features & NL80211_FEATURE_SCAN_FLUSH))) { 5545 err = -EOPNOTSUPP; 5546 goto out_free; 5547 } 5548 } 5549 5550 request->dev = dev; 5551 request->wiphy = &rdev->wiphy; 5552 request->interval = interval; 5553 request->scan_start = jiffies; 5554 5555 err = rdev_sched_scan_start(rdev, dev, request); 5556 if (!err) { 5557 rdev->sched_scan_req = request; 5558 nl80211_send_sched_scan(rdev, dev, 5559 NL80211_CMD_START_SCHED_SCAN); 5560 goto out; 5561 } 5562 5563 out_free: 5564 kfree(request); 5565 out: 5566 return err; 5567 } 5568 5569 static int nl80211_stop_sched_scan(struct sk_buff *skb, 5570 struct genl_info *info) 5571 { 5572 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 5573 5574 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) || 5575 !rdev->ops->sched_scan_stop) 5576 return -EOPNOTSUPP; 5577 5578 return __cfg80211_stop_sched_scan(rdev, false); 5579 } 5580 5581 static int nl80211_start_radar_detection(struct sk_buff *skb, 5582 struct genl_info *info) 5583 { 5584 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 5585 struct net_device *dev = info->user_ptr[1]; 5586 struct wireless_dev *wdev = dev->ieee80211_ptr; 5587 struct cfg80211_chan_def chandef; 5588 int err; 5589 5590 err = nl80211_parse_chandef(rdev, info, &chandef); 5591 if (err) 5592 return err; 5593 5594 if (wdev->cac_started) 5595 return -EBUSY; 5596 5597 err = cfg80211_chandef_dfs_required(wdev->wiphy, &chandef); 5598 if (err < 0) 5599 return err; 5600 5601 if (err == 0) 5602 return -EINVAL; 5603 5604 if (chandef.chan->dfs_state != NL80211_DFS_USABLE) 5605 return -EINVAL; 5606 5607 if (!rdev->ops->start_radar_detection) 5608 return -EOPNOTSUPP; 5609 5610 err = cfg80211_can_use_iftype_chan(rdev, wdev, wdev->iftype, 5611 chandef.chan, CHAN_MODE_SHARED, 5612 BIT(chandef.width)); 5613 if (err) 5614 return err; 5615 5616 err = rdev->ops->start_radar_detection(&rdev->wiphy, dev, &chandef); 5617 if (!err) { 5618 wdev->channel = chandef.chan; 5619 wdev->cac_started = true; 5620 wdev->cac_start_time = jiffies; 5621 } 5622 return err; 5623 } 5624 5625 static int nl80211_channel_switch(struct sk_buff *skb, struct genl_info *info) 5626 { 5627 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 5628 struct net_device *dev = info->user_ptr[1]; 5629 struct wireless_dev *wdev = dev->ieee80211_ptr; 5630 struct cfg80211_csa_settings params; 5631 /* csa_attrs is defined static to avoid waste of stack size - this 5632 * function is called under RTNL lock, so this should not be a problem. 5633 */ 5634 static struct nlattr *csa_attrs[NL80211_ATTR_MAX+1]; 5635 u8 radar_detect_width = 0; 5636 int err; 5637 5638 if (!rdev->ops->channel_switch || 5639 !(rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH)) 5640 return -EOPNOTSUPP; 5641 5642 /* may add IBSS support later */ 5643 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP && 5644 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) 5645 return -EOPNOTSUPP; 5646 5647 memset(¶ms, 0, sizeof(params)); 5648 5649 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] || 5650 !info->attrs[NL80211_ATTR_CH_SWITCH_COUNT]) 5651 return -EINVAL; 5652 5653 /* only important for AP, IBSS and mesh create IEs internally */ 5654 if (!info->attrs[NL80211_ATTR_CSA_IES]) 5655 return -EINVAL; 5656 5657 /* useless if AP is not running */ 5658 if (!wdev->beacon_interval) 5659 return -EINVAL; 5660 5661 params.count = nla_get_u32(info->attrs[NL80211_ATTR_CH_SWITCH_COUNT]); 5662 5663 err = nl80211_parse_beacon(info->attrs, ¶ms.beacon_after); 5664 if (err) 5665 return err; 5666 5667 err = nla_parse_nested(csa_attrs, NL80211_ATTR_MAX, 5668 info->attrs[NL80211_ATTR_CSA_IES], 5669 nl80211_policy); 5670 if (err) 5671 return err; 5672 5673 err = nl80211_parse_beacon(csa_attrs, ¶ms.beacon_csa); 5674 if (err) 5675 return err; 5676 5677 if (!csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]) 5678 return -EINVAL; 5679 5680 params.counter_offset_beacon = 5681 nla_get_u16(csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]); 5682 if (params.counter_offset_beacon >= params.beacon_csa.tail_len) 5683 return -EINVAL; 5684 5685 /* sanity check - counters should be the same */ 5686 if (params.beacon_csa.tail[params.counter_offset_beacon] != 5687 params.count) 5688 return -EINVAL; 5689 5690 if (csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]) { 5691 params.counter_offset_presp = 5692 nla_get_u16(csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]); 5693 if (params.counter_offset_presp >= 5694 params.beacon_csa.probe_resp_len) 5695 return -EINVAL; 5696 5697 if (params.beacon_csa.probe_resp[params.counter_offset_presp] != 5698 params.count) 5699 return -EINVAL; 5700 } 5701 5702 err = nl80211_parse_chandef(rdev, info, ¶ms.chandef); 5703 if (err) 5704 return err; 5705 5706 if (!cfg80211_reg_can_beacon(&rdev->wiphy, ¶ms.chandef)) 5707 return -EINVAL; 5708 5709 err = cfg80211_chandef_dfs_required(wdev->wiphy, ¶ms.chandef); 5710 if (err < 0) { 5711 return err; 5712 } else if (err) { 5713 radar_detect_width = BIT(params.chandef.width); 5714 params.radar_required = true; 5715 } 5716 5717 err = cfg80211_can_use_iftype_chan(rdev, wdev, wdev->iftype, 5718 params.chandef.chan, 5719 CHAN_MODE_SHARED, 5720 radar_detect_width); 5721 if (err) 5722 return err; 5723 5724 if (info->attrs[NL80211_ATTR_CH_SWITCH_BLOCK_TX]) 5725 params.block_tx = true; 5726 5727 return rdev_channel_switch(rdev, dev, ¶ms); 5728 } 5729 5730 static int nl80211_send_bss(struct sk_buff *msg, struct netlink_callback *cb, 5731 u32 seq, int flags, 5732 struct cfg80211_registered_device *rdev, 5733 struct wireless_dev *wdev, 5734 struct cfg80211_internal_bss *intbss) 5735 { 5736 struct cfg80211_bss *res = &intbss->pub; 5737 const struct cfg80211_bss_ies *ies; 5738 void *hdr; 5739 struct nlattr *bss; 5740 bool tsf = false; 5741 5742 ASSERT_WDEV_LOCK(wdev); 5743 5744 hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags, 5745 NL80211_CMD_NEW_SCAN_RESULTS); 5746 if (!hdr) 5747 return -1; 5748 5749 genl_dump_check_consistent(cb, hdr, &nl80211_fam); 5750 5751 if (nla_put_u32(msg, NL80211_ATTR_GENERATION, rdev->bss_generation)) 5752 goto nla_put_failure; 5753 if (wdev->netdev && 5754 nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex)) 5755 goto nla_put_failure; 5756 if (nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev))) 5757 goto nla_put_failure; 5758 5759 bss = nla_nest_start(msg, NL80211_ATTR_BSS); 5760 if (!bss) 5761 goto nla_put_failure; 5762 if ((!is_zero_ether_addr(res->bssid) && 5763 nla_put(msg, NL80211_BSS_BSSID, ETH_ALEN, res->bssid))) 5764 goto nla_put_failure; 5765 5766 rcu_read_lock(); 5767 ies = rcu_dereference(res->ies); 5768 if (ies) { 5769 if (nla_put_u64(msg, NL80211_BSS_TSF, ies->tsf)) 5770 goto fail_unlock_rcu; 5771 tsf = true; 5772 if (ies->len && nla_put(msg, NL80211_BSS_INFORMATION_ELEMENTS, 5773 ies->len, ies->data)) 5774 goto fail_unlock_rcu; 5775 } 5776 ies = rcu_dereference(res->beacon_ies); 5777 if (ies) { 5778 if (!tsf && nla_put_u64(msg, NL80211_BSS_TSF, ies->tsf)) 5779 goto fail_unlock_rcu; 5780 if (ies->len && nla_put(msg, NL80211_BSS_BEACON_IES, 5781 ies->len, ies->data)) 5782 goto fail_unlock_rcu; 5783 } 5784 rcu_read_unlock(); 5785 5786 if (res->beacon_interval && 5787 nla_put_u16(msg, NL80211_BSS_BEACON_INTERVAL, res->beacon_interval)) 5788 goto nla_put_failure; 5789 if (nla_put_u16(msg, NL80211_BSS_CAPABILITY, res->capability) || 5790 nla_put_u32(msg, NL80211_BSS_FREQUENCY, res->channel->center_freq) || 5791 nla_put_u32(msg, NL80211_BSS_CHAN_WIDTH, res->scan_width) || 5792 nla_put_u32(msg, NL80211_BSS_SEEN_MS_AGO, 5793 jiffies_to_msecs(jiffies - intbss->ts))) 5794 goto nla_put_failure; 5795 5796 switch (rdev->wiphy.signal_type) { 5797 case CFG80211_SIGNAL_TYPE_MBM: 5798 if (nla_put_u32(msg, NL80211_BSS_SIGNAL_MBM, res->signal)) 5799 goto nla_put_failure; 5800 break; 5801 case CFG80211_SIGNAL_TYPE_UNSPEC: 5802 if (nla_put_u8(msg, NL80211_BSS_SIGNAL_UNSPEC, res->signal)) 5803 goto nla_put_failure; 5804 break; 5805 default: 5806 break; 5807 } 5808 5809 switch (wdev->iftype) { 5810 case NL80211_IFTYPE_P2P_CLIENT: 5811 case NL80211_IFTYPE_STATION: 5812 if (intbss == wdev->current_bss && 5813 nla_put_u32(msg, NL80211_BSS_STATUS, 5814 NL80211_BSS_STATUS_ASSOCIATED)) 5815 goto nla_put_failure; 5816 break; 5817 case NL80211_IFTYPE_ADHOC: 5818 if (intbss == wdev->current_bss && 5819 nla_put_u32(msg, NL80211_BSS_STATUS, 5820 NL80211_BSS_STATUS_IBSS_JOINED)) 5821 goto nla_put_failure; 5822 break; 5823 default: 5824 break; 5825 } 5826 5827 nla_nest_end(msg, bss); 5828 5829 return genlmsg_end(msg, hdr); 5830 5831 fail_unlock_rcu: 5832 rcu_read_unlock(); 5833 nla_put_failure: 5834 genlmsg_cancel(msg, hdr); 5835 return -EMSGSIZE; 5836 } 5837 5838 static int nl80211_dump_scan(struct sk_buff *skb, struct netlink_callback *cb) 5839 { 5840 struct cfg80211_registered_device *rdev; 5841 struct cfg80211_internal_bss *scan; 5842 struct wireless_dev *wdev; 5843 int start = cb->args[2], idx = 0; 5844 int err; 5845 5846 err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev); 5847 if (err) 5848 return err; 5849 5850 wdev_lock(wdev); 5851 spin_lock_bh(&rdev->bss_lock); 5852 cfg80211_bss_expire(rdev); 5853 5854 cb->seq = rdev->bss_generation; 5855 5856 list_for_each_entry(scan, &rdev->bss_list, list) { 5857 if (++idx <= start) 5858 continue; 5859 if (nl80211_send_bss(skb, cb, 5860 cb->nlh->nlmsg_seq, NLM_F_MULTI, 5861 rdev, wdev, scan) < 0) { 5862 idx--; 5863 break; 5864 } 5865 } 5866 5867 spin_unlock_bh(&rdev->bss_lock); 5868 wdev_unlock(wdev); 5869 5870 cb->args[2] = idx; 5871 nl80211_finish_wdev_dump(rdev); 5872 5873 return skb->len; 5874 } 5875 5876 static int nl80211_send_survey(struct sk_buff *msg, u32 portid, u32 seq, 5877 int flags, struct net_device *dev, 5878 struct survey_info *survey) 5879 { 5880 void *hdr; 5881 struct nlattr *infoattr; 5882 5883 hdr = nl80211hdr_put(msg, portid, seq, flags, 5884 NL80211_CMD_NEW_SURVEY_RESULTS); 5885 if (!hdr) 5886 return -ENOMEM; 5887 5888 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex)) 5889 goto nla_put_failure; 5890 5891 infoattr = nla_nest_start(msg, NL80211_ATTR_SURVEY_INFO); 5892 if (!infoattr) 5893 goto nla_put_failure; 5894 5895 if (nla_put_u32(msg, NL80211_SURVEY_INFO_FREQUENCY, 5896 survey->channel->center_freq)) 5897 goto nla_put_failure; 5898 5899 if ((survey->filled & SURVEY_INFO_NOISE_DBM) && 5900 nla_put_u8(msg, NL80211_SURVEY_INFO_NOISE, survey->noise)) 5901 goto nla_put_failure; 5902 if ((survey->filled & SURVEY_INFO_IN_USE) && 5903 nla_put_flag(msg, NL80211_SURVEY_INFO_IN_USE)) 5904 goto nla_put_failure; 5905 if ((survey->filled & SURVEY_INFO_CHANNEL_TIME) && 5906 nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME, 5907 survey->channel_time)) 5908 goto nla_put_failure; 5909 if ((survey->filled & SURVEY_INFO_CHANNEL_TIME_BUSY) && 5910 nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_BUSY, 5911 survey->channel_time_busy)) 5912 goto nla_put_failure; 5913 if ((survey->filled & SURVEY_INFO_CHANNEL_TIME_EXT_BUSY) && 5914 nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_EXT_BUSY, 5915 survey->channel_time_ext_busy)) 5916 goto nla_put_failure; 5917 if ((survey->filled & SURVEY_INFO_CHANNEL_TIME_RX) && 5918 nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_RX, 5919 survey->channel_time_rx)) 5920 goto nla_put_failure; 5921 if ((survey->filled & SURVEY_INFO_CHANNEL_TIME_TX) && 5922 nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_TX, 5923 survey->channel_time_tx)) 5924 goto nla_put_failure; 5925 5926 nla_nest_end(msg, infoattr); 5927 5928 return genlmsg_end(msg, hdr); 5929 5930 nla_put_failure: 5931 genlmsg_cancel(msg, hdr); 5932 return -EMSGSIZE; 5933 } 5934 5935 static int nl80211_dump_survey(struct sk_buff *skb, 5936 struct netlink_callback *cb) 5937 { 5938 struct survey_info survey; 5939 struct cfg80211_registered_device *dev; 5940 struct wireless_dev *wdev; 5941 int survey_idx = cb->args[2]; 5942 int res; 5943 5944 res = nl80211_prepare_wdev_dump(skb, cb, &dev, &wdev); 5945 if (res) 5946 return res; 5947 5948 if (!wdev->netdev) { 5949 res = -EINVAL; 5950 goto out_err; 5951 } 5952 5953 if (!dev->ops->dump_survey) { 5954 res = -EOPNOTSUPP; 5955 goto out_err; 5956 } 5957 5958 while (1) { 5959 struct ieee80211_channel *chan; 5960 5961 res = rdev_dump_survey(dev, wdev->netdev, survey_idx, &survey); 5962 if (res == -ENOENT) 5963 break; 5964 if (res) 5965 goto out_err; 5966 5967 /* Survey without a channel doesn't make sense */ 5968 if (!survey.channel) { 5969 res = -EINVAL; 5970 goto out; 5971 } 5972 5973 chan = ieee80211_get_channel(&dev->wiphy, 5974 survey.channel->center_freq); 5975 if (!chan || chan->flags & IEEE80211_CHAN_DISABLED) { 5976 survey_idx++; 5977 continue; 5978 } 5979 5980 if (nl80211_send_survey(skb, 5981 NETLINK_CB(cb->skb).portid, 5982 cb->nlh->nlmsg_seq, NLM_F_MULTI, 5983 wdev->netdev, &survey) < 0) 5984 goto out; 5985 survey_idx++; 5986 } 5987 5988 out: 5989 cb->args[2] = survey_idx; 5990 res = skb->len; 5991 out_err: 5992 nl80211_finish_wdev_dump(dev); 5993 return res; 5994 } 5995 5996 static bool nl80211_valid_wpa_versions(u32 wpa_versions) 5997 { 5998 return !(wpa_versions & ~(NL80211_WPA_VERSION_1 | 5999 NL80211_WPA_VERSION_2)); 6000 } 6001 6002 static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info) 6003 { 6004 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 6005 struct net_device *dev = info->user_ptr[1]; 6006 struct ieee80211_channel *chan; 6007 const u8 *bssid, *ssid, *ie = NULL, *sae_data = NULL; 6008 int err, ssid_len, ie_len = 0, sae_data_len = 0; 6009 enum nl80211_auth_type auth_type; 6010 struct key_parse key; 6011 bool local_state_change; 6012 6013 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE])) 6014 return -EINVAL; 6015 6016 if (!info->attrs[NL80211_ATTR_MAC]) 6017 return -EINVAL; 6018 6019 if (!info->attrs[NL80211_ATTR_AUTH_TYPE]) 6020 return -EINVAL; 6021 6022 if (!info->attrs[NL80211_ATTR_SSID]) 6023 return -EINVAL; 6024 6025 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ]) 6026 return -EINVAL; 6027 6028 err = nl80211_parse_key(info, &key); 6029 if (err) 6030 return err; 6031 6032 if (key.idx >= 0) { 6033 if (key.type != -1 && key.type != NL80211_KEYTYPE_GROUP) 6034 return -EINVAL; 6035 if (!key.p.key || !key.p.key_len) 6036 return -EINVAL; 6037 if ((key.p.cipher != WLAN_CIPHER_SUITE_WEP40 || 6038 key.p.key_len != WLAN_KEY_LEN_WEP40) && 6039 (key.p.cipher != WLAN_CIPHER_SUITE_WEP104 || 6040 key.p.key_len != WLAN_KEY_LEN_WEP104)) 6041 return -EINVAL; 6042 if (key.idx > 4) 6043 return -EINVAL; 6044 } else { 6045 key.p.key_len = 0; 6046 key.p.key = NULL; 6047 } 6048 6049 if (key.idx >= 0) { 6050 int i; 6051 bool ok = false; 6052 for (i = 0; i < rdev->wiphy.n_cipher_suites; i++) { 6053 if (key.p.cipher == rdev->wiphy.cipher_suites[i]) { 6054 ok = true; 6055 break; 6056 } 6057 } 6058 if (!ok) 6059 return -EINVAL; 6060 } 6061 6062 if (!rdev->ops->auth) 6063 return -EOPNOTSUPP; 6064 6065 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION && 6066 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) 6067 return -EOPNOTSUPP; 6068 6069 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]); 6070 chan = ieee80211_get_channel(&rdev->wiphy, 6071 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ])); 6072 if (!chan || (chan->flags & IEEE80211_CHAN_DISABLED)) 6073 return -EINVAL; 6074 6075 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]); 6076 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]); 6077 6078 if (info->attrs[NL80211_ATTR_IE]) { 6079 ie = nla_data(info->attrs[NL80211_ATTR_IE]); 6080 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); 6081 } 6082 6083 auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]); 6084 if (!nl80211_valid_auth_type(rdev, auth_type, NL80211_CMD_AUTHENTICATE)) 6085 return -EINVAL; 6086 6087 if (auth_type == NL80211_AUTHTYPE_SAE && 6088 !info->attrs[NL80211_ATTR_SAE_DATA]) 6089 return -EINVAL; 6090 6091 if (info->attrs[NL80211_ATTR_SAE_DATA]) { 6092 if (auth_type != NL80211_AUTHTYPE_SAE) 6093 return -EINVAL; 6094 sae_data = nla_data(info->attrs[NL80211_ATTR_SAE_DATA]); 6095 sae_data_len = nla_len(info->attrs[NL80211_ATTR_SAE_DATA]); 6096 /* need to include at least Auth Transaction and Status Code */ 6097 if (sae_data_len < 4) 6098 return -EINVAL; 6099 } 6100 6101 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE]; 6102 6103 /* 6104 * Since we no longer track auth state, ignore 6105 * requests to only change local state. 6106 */ 6107 if (local_state_change) 6108 return 0; 6109 6110 wdev_lock(dev->ieee80211_ptr); 6111 err = cfg80211_mlme_auth(rdev, dev, chan, auth_type, bssid, 6112 ssid, ssid_len, ie, ie_len, 6113 key.p.key, key.p.key_len, key.idx, 6114 sae_data, sae_data_len); 6115 wdev_unlock(dev->ieee80211_ptr); 6116 return err; 6117 } 6118 6119 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev, 6120 struct genl_info *info, 6121 struct cfg80211_crypto_settings *settings, 6122 int cipher_limit) 6123 { 6124 memset(settings, 0, sizeof(*settings)); 6125 6126 settings->control_port = info->attrs[NL80211_ATTR_CONTROL_PORT]; 6127 6128 if (info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) { 6129 u16 proto; 6130 proto = nla_get_u16( 6131 info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]); 6132 settings->control_port_ethertype = cpu_to_be16(proto); 6133 if (!(rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) && 6134 proto != ETH_P_PAE) 6135 return -EINVAL; 6136 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT]) 6137 settings->control_port_no_encrypt = true; 6138 } else 6139 settings->control_port_ethertype = cpu_to_be16(ETH_P_PAE); 6140 6141 if (info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]) { 6142 void *data; 6143 int len, i; 6144 6145 data = nla_data(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]); 6146 len = nla_len(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]); 6147 settings->n_ciphers_pairwise = len / sizeof(u32); 6148 6149 if (len % sizeof(u32)) 6150 return -EINVAL; 6151 6152 if (settings->n_ciphers_pairwise > cipher_limit) 6153 return -EINVAL; 6154 6155 memcpy(settings->ciphers_pairwise, data, len); 6156 6157 for (i = 0; i < settings->n_ciphers_pairwise; i++) 6158 if (!cfg80211_supported_cipher_suite( 6159 &rdev->wiphy, 6160 settings->ciphers_pairwise[i])) 6161 return -EINVAL; 6162 } 6163 6164 if (info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]) { 6165 settings->cipher_group = 6166 nla_get_u32(info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]); 6167 if (!cfg80211_supported_cipher_suite(&rdev->wiphy, 6168 settings->cipher_group)) 6169 return -EINVAL; 6170 } 6171 6172 if (info->attrs[NL80211_ATTR_WPA_VERSIONS]) { 6173 settings->wpa_versions = 6174 nla_get_u32(info->attrs[NL80211_ATTR_WPA_VERSIONS]); 6175 if (!nl80211_valid_wpa_versions(settings->wpa_versions)) 6176 return -EINVAL; 6177 } 6178 6179 if (info->attrs[NL80211_ATTR_AKM_SUITES]) { 6180 void *data; 6181 int len; 6182 6183 data = nla_data(info->attrs[NL80211_ATTR_AKM_SUITES]); 6184 len = nla_len(info->attrs[NL80211_ATTR_AKM_SUITES]); 6185 settings->n_akm_suites = len / sizeof(u32); 6186 6187 if (len % sizeof(u32)) 6188 return -EINVAL; 6189 6190 if (settings->n_akm_suites > NL80211_MAX_NR_AKM_SUITES) 6191 return -EINVAL; 6192 6193 memcpy(settings->akm_suites, data, len); 6194 } 6195 6196 return 0; 6197 } 6198 6199 static int nl80211_associate(struct sk_buff *skb, struct genl_info *info) 6200 { 6201 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 6202 struct net_device *dev = info->user_ptr[1]; 6203 struct ieee80211_channel *chan; 6204 struct cfg80211_assoc_request req = {}; 6205 const u8 *bssid, *ssid; 6206 int err, ssid_len = 0; 6207 6208 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE])) 6209 return -EINVAL; 6210 6211 if (!info->attrs[NL80211_ATTR_MAC] || 6212 !info->attrs[NL80211_ATTR_SSID] || 6213 !info->attrs[NL80211_ATTR_WIPHY_FREQ]) 6214 return -EINVAL; 6215 6216 if (!rdev->ops->assoc) 6217 return -EOPNOTSUPP; 6218 6219 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION && 6220 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) 6221 return -EOPNOTSUPP; 6222 6223 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]); 6224 6225 chan = ieee80211_get_channel(&rdev->wiphy, 6226 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ])); 6227 if (!chan || (chan->flags & IEEE80211_CHAN_DISABLED)) 6228 return -EINVAL; 6229 6230 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]); 6231 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]); 6232 6233 if (info->attrs[NL80211_ATTR_IE]) { 6234 req.ie = nla_data(info->attrs[NL80211_ATTR_IE]); 6235 req.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); 6236 } 6237 6238 if (info->attrs[NL80211_ATTR_USE_MFP]) { 6239 enum nl80211_mfp mfp = 6240 nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]); 6241 if (mfp == NL80211_MFP_REQUIRED) 6242 req.use_mfp = true; 6243 else if (mfp != NL80211_MFP_NO) 6244 return -EINVAL; 6245 } 6246 6247 if (info->attrs[NL80211_ATTR_PREV_BSSID]) 6248 req.prev_bssid = nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]); 6249 6250 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT])) 6251 req.flags |= ASSOC_REQ_DISABLE_HT; 6252 6253 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) 6254 memcpy(&req.ht_capa_mask, 6255 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]), 6256 sizeof(req.ht_capa_mask)); 6257 6258 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) { 6259 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) 6260 return -EINVAL; 6261 memcpy(&req.ht_capa, 6262 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]), 6263 sizeof(req.ht_capa)); 6264 } 6265 6266 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT])) 6267 req.flags |= ASSOC_REQ_DISABLE_VHT; 6268 6269 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]) 6270 memcpy(&req.vht_capa_mask, 6271 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]), 6272 sizeof(req.vht_capa_mask)); 6273 6274 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) { 6275 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]) 6276 return -EINVAL; 6277 memcpy(&req.vht_capa, 6278 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]), 6279 sizeof(req.vht_capa)); 6280 } 6281 6282 err = nl80211_crypto_settings(rdev, info, &req.crypto, 1); 6283 if (!err) { 6284 wdev_lock(dev->ieee80211_ptr); 6285 err = cfg80211_mlme_assoc(rdev, dev, chan, bssid, 6286 ssid, ssid_len, &req); 6287 wdev_unlock(dev->ieee80211_ptr); 6288 } 6289 6290 return err; 6291 } 6292 6293 static int nl80211_deauthenticate(struct sk_buff *skb, struct genl_info *info) 6294 { 6295 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 6296 struct net_device *dev = info->user_ptr[1]; 6297 const u8 *ie = NULL, *bssid; 6298 int ie_len = 0, err; 6299 u16 reason_code; 6300 bool local_state_change; 6301 6302 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE])) 6303 return -EINVAL; 6304 6305 if (!info->attrs[NL80211_ATTR_MAC]) 6306 return -EINVAL; 6307 6308 if (!info->attrs[NL80211_ATTR_REASON_CODE]) 6309 return -EINVAL; 6310 6311 if (!rdev->ops->deauth) 6312 return -EOPNOTSUPP; 6313 6314 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION && 6315 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) 6316 return -EOPNOTSUPP; 6317 6318 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]); 6319 6320 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]); 6321 if (reason_code == 0) { 6322 /* Reason Code 0 is reserved */ 6323 return -EINVAL; 6324 } 6325 6326 if (info->attrs[NL80211_ATTR_IE]) { 6327 ie = nla_data(info->attrs[NL80211_ATTR_IE]); 6328 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); 6329 } 6330 6331 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE]; 6332 6333 wdev_lock(dev->ieee80211_ptr); 6334 err = cfg80211_mlme_deauth(rdev, dev, bssid, ie, ie_len, reason_code, 6335 local_state_change); 6336 wdev_unlock(dev->ieee80211_ptr); 6337 return err; 6338 } 6339 6340 static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info) 6341 { 6342 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 6343 struct net_device *dev = info->user_ptr[1]; 6344 const u8 *ie = NULL, *bssid; 6345 int ie_len = 0, err; 6346 u16 reason_code; 6347 bool local_state_change; 6348 6349 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE])) 6350 return -EINVAL; 6351 6352 if (!info->attrs[NL80211_ATTR_MAC]) 6353 return -EINVAL; 6354 6355 if (!info->attrs[NL80211_ATTR_REASON_CODE]) 6356 return -EINVAL; 6357 6358 if (!rdev->ops->disassoc) 6359 return -EOPNOTSUPP; 6360 6361 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION && 6362 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) 6363 return -EOPNOTSUPP; 6364 6365 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]); 6366 6367 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]); 6368 if (reason_code == 0) { 6369 /* Reason Code 0 is reserved */ 6370 return -EINVAL; 6371 } 6372 6373 if (info->attrs[NL80211_ATTR_IE]) { 6374 ie = nla_data(info->attrs[NL80211_ATTR_IE]); 6375 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); 6376 } 6377 6378 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE]; 6379 6380 wdev_lock(dev->ieee80211_ptr); 6381 err = cfg80211_mlme_disassoc(rdev, dev, bssid, ie, ie_len, reason_code, 6382 local_state_change); 6383 wdev_unlock(dev->ieee80211_ptr); 6384 return err; 6385 } 6386 6387 static bool 6388 nl80211_parse_mcast_rate(struct cfg80211_registered_device *rdev, 6389 int mcast_rate[IEEE80211_NUM_BANDS], 6390 int rateval) 6391 { 6392 struct wiphy *wiphy = &rdev->wiphy; 6393 bool found = false; 6394 int band, i; 6395 6396 for (band = 0; band < IEEE80211_NUM_BANDS; band++) { 6397 struct ieee80211_supported_band *sband; 6398 6399 sband = wiphy->bands[band]; 6400 if (!sband) 6401 continue; 6402 6403 for (i = 0; i < sband->n_bitrates; i++) { 6404 if (sband->bitrates[i].bitrate == rateval) { 6405 mcast_rate[band] = i + 1; 6406 found = true; 6407 break; 6408 } 6409 } 6410 } 6411 6412 return found; 6413 } 6414 6415 static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info) 6416 { 6417 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 6418 struct net_device *dev = info->user_ptr[1]; 6419 struct cfg80211_ibss_params ibss; 6420 struct wiphy *wiphy; 6421 struct cfg80211_cached_keys *connkeys = NULL; 6422 int err; 6423 6424 memset(&ibss, 0, sizeof(ibss)); 6425 6426 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE])) 6427 return -EINVAL; 6428 6429 if (!info->attrs[NL80211_ATTR_SSID] || 6430 !nla_len(info->attrs[NL80211_ATTR_SSID])) 6431 return -EINVAL; 6432 6433 ibss.beacon_interval = 100; 6434 6435 if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) { 6436 ibss.beacon_interval = 6437 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]); 6438 if (ibss.beacon_interval < 1 || ibss.beacon_interval > 10000) 6439 return -EINVAL; 6440 } 6441 6442 if (!rdev->ops->join_ibss) 6443 return -EOPNOTSUPP; 6444 6445 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC) 6446 return -EOPNOTSUPP; 6447 6448 wiphy = &rdev->wiphy; 6449 6450 if (info->attrs[NL80211_ATTR_MAC]) { 6451 ibss.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]); 6452 6453 if (!is_valid_ether_addr(ibss.bssid)) 6454 return -EINVAL; 6455 } 6456 ibss.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]); 6457 ibss.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]); 6458 6459 if (info->attrs[NL80211_ATTR_IE]) { 6460 ibss.ie = nla_data(info->attrs[NL80211_ATTR_IE]); 6461 ibss.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); 6462 } 6463 6464 err = nl80211_parse_chandef(rdev, info, &ibss.chandef); 6465 if (err) 6466 return err; 6467 6468 if (!cfg80211_reg_can_beacon(&rdev->wiphy, &ibss.chandef)) 6469 return -EINVAL; 6470 6471 switch (ibss.chandef.width) { 6472 case NL80211_CHAN_WIDTH_5: 6473 case NL80211_CHAN_WIDTH_10: 6474 case NL80211_CHAN_WIDTH_20_NOHT: 6475 break; 6476 case NL80211_CHAN_WIDTH_20: 6477 case NL80211_CHAN_WIDTH_40: 6478 if (rdev->wiphy.features & NL80211_FEATURE_HT_IBSS) 6479 break; 6480 default: 6481 return -EINVAL; 6482 } 6483 6484 ibss.channel_fixed = !!info->attrs[NL80211_ATTR_FREQ_FIXED]; 6485 ibss.privacy = !!info->attrs[NL80211_ATTR_PRIVACY]; 6486 6487 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) { 6488 u8 *rates = 6489 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]); 6490 int n_rates = 6491 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]); 6492 struct ieee80211_supported_band *sband = 6493 wiphy->bands[ibss.chandef.chan->band]; 6494 6495 err = ieee80211_get_ratemask(sband, rates, n_rates, 6496 &ibss.basic_rates); 6497 if (err) 6498 return err; 6499 } 6500 6501 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) 6502 memcpy(&ibss.ht_capa_mask, 6503 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]), 6504 sizeof(ibss.ht_capa_mask)); 6505 6506 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) { 6507 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) 6508 return -EINVAL; 6509 memcpy(&ibss.ht_capa, 6510 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]), 6511 sizeof(ibss.ht_capa)); 6512 } 6513 6514 if (info->attrs[NL80211_ATTR_MCAST_RATE] && 6515 !nl80211_parse_mcast_rate(rdev, ibss.mcast_rate, 6516 nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE]))) 6517 return -EINVAL; 6518 6519 if (ibss.privacy && info->attrs[NL80211_ATTR_KEYS]) { 6520 bool no_ht = false; 6521 6522 connkeys = nl80211_parse_connkeys(rdev, 6523 info->attrs[NL80211_ATTR_KEYS], 6524 &no_ht); 6525 if (IS_ERR(connkeys)) 6526 return PTR_ERR(connkeys); 6527 6528 if ((ibss.chandef.width != NL80211_CHAN_WIDTH_20_NOHT) && 6529 no_ht) { 6530 kfree(connkeys); 6531 return -EINVAL; 6532 } 6533 } 6534 6535 ibss.control_port = 6536 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT]); 6537 6538 err = cfg80211_join_ibss(rdev, dev, &ibss, connkeys); 6539 if (err) 6540 kfree(connkeys); 6541 return err; 6542 } 6543 6544 static int nl80211_leave_ibss(struct sk_buff *skb, struct genl_info *info) 6545 { 6546 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 6547 struct net_device *dev = info->user_ptr[1]; 6548 6549 if (!rdev->ops->leave_ibss) 6550 return -EOPNOTSUPP; 6551 6552 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC) 6553 return -EOPNOTSUPP; 6554 6555 return cfg80211_leave_ibss(rdev, dev, false); 6556 } 6557 6558 static int nl80211_set_mcast_rate(struct sk_buff *skb, struct genl_info *info) 6559 { 6560 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 6561 struct net_device *dev = info->user_ptr[1]; 6562 int mcast_rate[IEEE80211_NUM_BANDS]; 6563 u32 nla_rate; 6564 int err; 6565 6566 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC && 6567 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT) 6568 return -EOPNOTSUPP; 6569 6570 if (!rdev->ops->set_mcast_rate) 6571 return -EOPNOTSUPP; 6572 6573 memset(mcast_rate, 0, sizeof(mcast_rate)); 6574 6575 if (!info->attrs[NL80211_ATTR_MCAST_RATE]) 6576 return -EINVAL; 6577 6578 nla_rate = nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE]); 6579 if (!nl80211_parse_mcast_rate(rdev, mcast_rate, nla_rate)) 6580 return -EINVAL; 6581 6582 err = rdev->ops->set_mcast_rate(&rdev->wiphy, dev, mcast_rate); 6583 6584 return err; 6585 } 6586 6587 6588 #ifdef CONFIG_NL80211_TESTMODE 6589 static struct genl_multicast_group nl80211_testmode_mcgrp = { 6590 .name = "testmode", 6591 }; 6592 6593 static int nl80211_testmode_do(struct sk_buff *skb, struct genl_info *info) 6594 { 6595 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 6596 struct wireless_dev *wdev = 6597 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs); 6598 int err; 6599 6600 if (!rdev->ops->testmode_cmd) 6601 return -EOPNOTSUPP; 6602 6603 if (IS_ERR(wdev)) { 6604 err = PTR_ERR(wdev); 6605 if (err != -EINVAL) 6606 return err; 6607 wdev = NULL; 6608 } else if (wdev->wiphy != &rdev->wiphy) { 6609 return -EINVAL; 6610 } 6611 6612 if (!info->attrs[NL80211_ATTR_TESTDATA]) 6613 return -EINVAL; 6614 6615 rdev->testmode_info = info; 6616 err = rdev_testmode_cmd(rdev, wdev, 6617 nla_data(info->attrs[NL80211_ATTR_TESTDATA]), 6618 nla_len(info->attrs[NL80211_ATTR_TESTDATA])); 6619 rdev->testmode_info = NULL; 6620 6621 return err; 6622 } 6623 6624 static int nl80211_testmode_dump(struct sk_buff *skb, 6625 struct netlink_callback *cb) 6626 { 6627 struct cfg80211_registered_device *rdev; 6628 int err; 6629 long phy_idx; 6630 void *data = NULL; 6631 int data_len = 0; 6632 6633 rtnl_lock(); 6634 6635 if (cb->args[0]) { 6636 /* 6637 * 0 is a valid index, but not valid for args[0], 6638 * so we need to offset by 1. 6639 */ 6640 phy_idx = cb->args[0] - 1; 6641 } else { 6642 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize, 6643 nl80211_fam.attrbuf, nl80211_fam.maxattr, 6644 nl80211_policy); 6645 if (err) 6646 goto out_err; 6647 6648 rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk), 6649 nl80211_fam.attrbuf); 6650 if (IS_ERR(rdev)) { 6651 err = PTR_ERR(rdev); 6652 goto out_err; 6653 } 6654 phy_idx = rdev->wiphy_idx; 6655 rdev = NULL; 6656 6657 if (nl80211_fam.attrbuf[NL80211_ATTR_TESTDATA]) 6658 cb->args[1] = 6659 (long)nl80211_fam.attrbuf[NL80211_ATTR_TESTDATA]; 6660 } 6661 6662 if (cb->args[1]) { 6663 data = nla_data((void *)cb->args[1]); 6664 data_len = nla_len((void *)cb->args[1]); 6665 } 6666 6667 rdev = cfg80211_rdev_by_wiphy_idx(phy_idx); 6668 if (!rdev) { 6669 err = -ENOENT; 6670 goto out_err; 6671 } 6672 6673 if (!rdev->ops->testmode_dump) { 6674 err = -EOPNOTSUPP; 6675 goto out_err; 6676 } 6677 6678 while (1) { 6679 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid, 6680 cb->nlh->nlmsg_seq, NLM_F_MULTI, 6681 NL80211_CMD_TESTMODE); 6682 struct nlattr *tmdata; 6683 6684 if (!hdr) 6685 break; 6686 6687 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, phy_idx)) { 6688 genlmsg_cancel(skb, hdr); 6689 break; 6690 } 6691 6692 tmdata = nla_nest_start(skb, NL80211_ATTR_TESTDATA); 6693 if (!tmdata) { 6694 genlmsg_cancel(skb, hdr); 6695 break; 6696 } 6697 err = rdev_testmode_dump(rdev, skb, cb, data, data_len); 6698 nla_nest_end(skb, tmdata); 6699 6700 if (err == -ENOBUFS || err == -ENOENT) { 6701 genlmsg_cancel(skb, hdr); 6702 break; 6703 } else if (err) { 6704 genlmsg_cancel(skb, hdr); 6705 goto out_err; 6706 } 6707 6708 genlmsg_end(skb, hdr); 6709 } 6710 6711 err = skb->len; 6712 /* see above */ 6713 cb->args[0] = phy_idx + 1; 6714 out_err: 6715 rtnl_unlock(); 6716 return err; 6717 } 6718 6719 static struct sk_buff * 6720 __cfg80211_testmode_alloc_skb(struct cfg80211_registered_device *rdev, 6721 int approxlen, u32 portid, u32 seq, gfp_t gfp) 6722 { 6723 struct sk_buff *skb; 6724 void *hdr; 6725 struct nlattr *data; 6726 6727 skb = nlmsg_new(approxlen + 100, gfp); 6728 if (!skb) 6729 return NULL; 6730 6731 hdr = nl80211hdr_put(skb, portid, seq, 0, NL80211_CMD_TESTMODE); 6732 if (!hdr) { 6733 kfree_skb(skb); 6734 return NULL; 6735 } 6736 6737 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx)) 6738 goto nla_put_failure; 6739 data = nla_nest_start(skb, NL80211_ATTR_TESTDATA); 6740 6741 ((void **)skb->cb)[0] = rdev; 6742 ((void **)skb->cb)[1] = hdr; 6743 ((void **)skb->cb)[2] = data; 6744 6745 return skb; 6746 6747 nla_put_failure: 6748 kfree_skb(skb); 6749 return NULL; 6750 } 6751 6752 struct sk_buff *cfg80211_testmode_alloc_reply_skb(struct wiphy *wiphy, 6753 int approxlen) 6754 { 6755 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); 6756 6757 if (WARN_ON(!rdev->testmode_info)) 6758 return NULL; 6759 6760 return __cfg80211_testmode_alloc_skb(rdev, approxlen, 6761 rdev->testmode_info->snd_portid, 6762 rdev->testmode_info->snd_seq, 6763 GFP_KERNEL); 6764 } 6765 EXPORT_SYMBOL(cfg80211_testmode_alloc_reply_skb); 6766 6767 int cfg80211_testmode_reply(struct sk_buff *skb) 6768 { 6769 struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0]; 6770 void *hdr = ((void **)skb->cb)[1]; 6771 struct nlattr *data = ((void **)skb->cb)[2]; 6772 6773 if (WARN_ON(!rdev->testmode_info)) { 6774 kfree_skb(skb); 6775 return -EINVAL; 6776 } 6777 6778 nla_nest_end(skb, data); 6779 genlmsg_end(skb, hdr); 6780 return genlmsg_reply(skb, rdev->testmode_info); 6781 } 6782 EXPORT_SYMBOL(cfg80211_testmode_reply); 6783 6784 struct sk_buff *cfg80211_testmode_alloc_event_skb(struct wiphy *wiphy, 6785 int approxlen, gfp_t gfp) 6786 { 6787 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); 6788 6789 return __cfg80211_testmode_alloc_skb(rdev, approxlen, 0, 0, gfp); 6790 } 6791 EXPORT_SYMBOL(cfg80211_testmode_alloc_event_skb); 6792 6793 void cfg80211_testmode_event(struct sk_buff *skb, gfp_t gfp) 6794 { 6795 struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0]; 6796 void *hdr = ((void **)skb->cb)[1]; 6797 struct nlattr *data = ((void **)skb->cb)[2]; 6798 6799 nla_nest_end(skb, data); 6800 genlmsg_end(skb, hdr); 6801 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), skb, 0, 6802 nl80211_testmode_mcgrp.id, gfp); 6803 } 6804 EXPORT_SYMBOL(cfg80211_testmode_event); 6805 #endif 6806 6807 static int nl80211_connect(struct sk_buff *skb, struct genl_info *info) 6808 { 6809 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 6810 struct net_device *dev = info->user_ptr[1]; 6811 struct cfg80211_connect_params connect; 6812 struct wiphy *wiphy; 6813 struct cfg80211_cached_keys *connkeys = NULL; 6814 int err; 6815 6816 memset(&connect, 0, sizeof(connect)); 6817 6818 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE])) 6819 return -EINVAL; 6820 6821 if (!info->attrs[NL80211_ATTR_SSID] || 6822 !nla_len(info->attrs[NL80211_ATTR_SSID])) 6823 return -EINVAL; 6824 6825 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) { 6826 connect.auth_type = 6827 nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]); 6828 if (!nl80211_valid_auth_type(rdev, connect.auth_type, 6829 NL80211_CMD_CONNECT)) 6830 return -EINVAL; 6831 } else 6832 connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC; 6833 6834 connect.privacy = info->attrs[NL80211_ATTR_PRIVACY]; 6835 6836 err = nl80211_crypto_settings(rdev, info, &connect.crypto, 6837 NL80211_MAX_NR_CIPHER_SUITES); 6838 if (err) 6839 return err; 6840 6841 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION && 6842 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) 6843 return -EOPNOTSUPP; 6844 6845 wiphy = &rdev->wiphy; 6846 6847 connect.bg_scan_period = -1; 6848 if (info->attrs[NL80211_ATTR_BG_SCAN_PERIOD] && 6849 (wiphy->flags & WIPHY_FLAG_SUPPORTS_FW_ROAM)) { 6850 connect.bg_scan_period = 6851 nla_get_u16(info->attrs[NL80211_ATTR_BG_SCAN_PERIOD]); 6852 } 6853 6854 if (info->attrs[NL80211_ATTR_MAC]) 6855 connect.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]); 6856 connect.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]); 6857 connect.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]); 6858 6859 if (info->attrs[NL80211_ATTR_IE]) { 6860 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]); 6861 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); 6862 } 6863 6864 if (info->attrs[NL80211_ATTR_USE_MFP]) { 6865 connect.mfp = nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]); 6866 if (connect.mfp != NL80211_MFP_REQUIRED && 6867 connect.mfp != NL80211_MFP_NO) 6868 return -EINVAL; 6869 } else { 6870 connect.mfp = NL80211_MFP_NO; 6871 } 6872 6873 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) { 6874 connect.channel = 6875 ieee80211_get_channel(wiphy, 6876 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ])); 6877 if (!connect.channel || 6878 connect.channel->flags & IEEE80211_CHAN_DISABLED) 6879 return -EINVAL; 6880 } 6881 6882 if (connect.privacy && info->attrs[NL80211_ATTR_KEYS]) { 6883 connkeys = nl80211_parse_connkeys(rdev, 6884 info->attrs[NL80211_ATTR_KEYS], NULL); 6885 if (IS_ERR(connkeys)) 6886 return PTR_ERR(connkeys); 6887 } 6888 6889 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT])) 6890 connect.flags |= ASSOC_REQ_DISABLE_HT; 6891 6892 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) 6893 memcpy(&connect.ht_capa_mask, 6894 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]), 6895 sizeof(connect.ht_capa_mask)); 6896 6897 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) { 6898 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) { 6899 kfree(connkeys); 6900 return -EINVAL; 6901 } 6902 memcpy(&connect.ht_capa, 6903 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]), 6904 sizeof(connect.ht_capa)); 6905 } 6906 6907 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT])) 6908 connect.flags |= ASSOC_REQ_DISABLE_VHT; 6909 6910 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]) 6911 memcpy(&connect.vht_capa_mask, 6912 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]), 6913 sizeof(connect.vht_capa_mask)); 6914 6915 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) { 6916 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]) { 6917 kfree(connkeys); 6918 return -EINVAL; 6919 } 6920 memcpy(&connect.vht_capa, 6921 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]), 6922 sizeof(connect.vht_capa)); 6923 } 6924 6925 wdev_lock(dev->ieee80211_ptr); 6926 err = cfg80211_connect(rdev, dev, &connect, connkeys, NULL); 6927 wdev_unlock(dev->ieee80211_ptr); 6928 if (err) 6929 kfree(connkeys); 6930 return err; 6931 } 6932 6933 static int nl80211_disconnect(struct sk_buff *skb, struct genl_info *info) 6934 { 6935 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 6936 struct net_device *dev = info->user_ptr[1]; 6937 u16 reason; 6938 int ret; 6939 6940 if (!info->attrs[NL80211_ATTR_REASON_CODE]) 6941 reason = WLAN_REASON_DEAUTH_LEAVING; 6942 else 6943 reason = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]); 6944 6945 if (reason == 0) 6946 return -EINVAL; 6947 6948 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION && 6949 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) 6950 return -EOPNOTSUPP; 6951 6952 wdev_lock(dev->ieee80211_ptr); 6953 ret = cfg80211_disconnect(rdev, dev, reason, true); 6954 wdev_unlock(dev->ieee80211_ptr); 6955 return ret; 6956 } 6957 6958 static int nl80211_wiphy_netns(struct sk_buff *skb, struct genl_info *info) 6959 { 6960 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 6961 struct net *net; 6962 int err; 6963 u32 pid; 6964 6965 if (!info->attrs[NL80211_ATTR_PID]) 6966 return -EINVAL; 6967 6968 pid = nla_get_u32(info->attrs[NL80211_ATTR_PID]); 6969 6970 net = get_net_ns_by_pid(pid); 6971 if (IS_ERR(net)) 6972 return PTR_ERR(net); 6973 6974 err = 0; 6975 6976 /* check if anything to do */ 6977 if (!net_eq(wiphy_net(&rdev->wiphy), net)) 6978 err = cfg80211_switch_netns(rdev, net); 6979 6980 put_net(net); 6981 return err; 6982 } 6983 6984 static int nl80211_setdel_pmksa(struct sk_buff *skb, struct genl_info *info) 6985 { 6986 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 6987 int (*rdev_ops)(struct wiphy *wiphy, struct net_device *dev, 6988 struct cfg80211_pmksa *pmksa) = NULL; 6989 struct net_device *dev = info->user_ptr[1]; 6990 struct cfg80211_pmksa pmksa; 6991 6992 memset(&pmksa, 0, sizeof(struct cfg80211_pmksa)); 6993 6994 if (!info->attrs[NL80211_ATTR_MAC]) 6995 return -EINVAL; 6996 6997 if (!info->attrs[NL80211_ATTR_PMKID]) 6998 return -EINVAL; 6999 7000 pmksa.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]); 7001 pmksa.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]); 7002 7003 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION && 7004 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) 7005 return -EOPNOTSUPP; 7006 7007 switch (info->genlhdr->cmd) { 7008 case NL80211_CMD_SET_PMKSA: 7009 rdev_ops = rdev->ops->set_pmksa; 7010 break; 7011 case NL80211_CMD_DEL_PMKSA: 7012 rdev_ops = rdev->ops->del_pmksa; 7013 break; 7014 default: 7015 WARN_ON(1); 7016 break; 7017 } 7018 7019 if (!rdev_ops) 7020 return -EOPNOTSUPP; 7021 7022 return rdev_ops(&rdev->wiphy, dev, &pmksa); 7023 } 7024 7025 static int nl80211_flush_pmksa(struct sk_buff *skb, struct genl_info *info) 7026 { 7027 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 7028 struct net_device *dev = info->user_ptr[1]; 7029 7030 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION && 7031 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) 7032 return -EOPNOTSUPP; 7033 7034 if (!rdev->ops->flush_pmksa) 7035 return -EOPNOTSUPP; 7036 7037 return rdev_flush_pmksa(rdev, dev); 7038 } 7039 7040 static int nl80211_tdls_mgmt(struct sk_buff *skb, struct genl_info *info) 7041 { 7042 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 7043 struct net_device *dev = info->user_ptr[1]; 7044 u8 action_code, dialog_token; 7045 u16 status_code; 7046 u8 *peer; 7047 7048 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) || 7049 !rdev->ops->tdls_mgmt) 7050 return -EOPNOTSUPP; 7051 7052 if (!info->attrs[NL80211_ATTR_TDLS_ACTION] || 7053 !info->attrs[NL80211_ATTR_STATUS_CODE] || 7054 !info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN] || 7055 !info->attrs[NL80211_ATTR_IE] || 7056 !info->attrs[NL80211_ATTR_MAC]) 7057 return -EINVAL; 7058 7059 peer = nla_data(info->attrs[NL80211_ATTR_MAC]); 7060 action_code = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_ACTION]); 7061 status_code = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]); 7062 dialog_token = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN]); 7063 7064 return rdev_tdls_mgmt(rdev, dev, peer, action_code, 7065 dialog_token, status_code, 7066 nla_data(info->attrs[NL80211_ATTR_IE]), 7067 nla_len(info->attrs[NL80211_ATTR_IE])); 7068 } 7069 7070 static int nl80211_tdls_oper(struct sk_buff *skb, struct genl_info *info) 7071 { 7072 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 7073 struct net_device *dev = info->user_ptr[1]; 7074 enum nl80211_tdls_operation operation; 7075 u8 *peer; 7076 7077 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) || 7078 !rdev->ops->tdls_oper) 7079 return -EOPNOTSUPP; 7080 7081 if (!info->attrs[NL80211_ATTR_TDLS_OPERATION] || 7082 !info->attrs[NL80211_ATTR_MAC]) 7083 return -EINVAL; 7084 7085 operation = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_OPERATION]); 7086 peer = nla_data(info->attrs[NL80211_ATTR_MAC]); 7087 7088 return rdev_tdls_oper(rdev, dev, peer, operation); 7089 } 7090 7091 static int nl80211_remain_on_channel(struct sk_buff *skb, 7092 struct genl_info *info) 7093 { 7094 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 7095 struct wireless_dev *wdev = info->user_ptr[1]; 7096 struct cfg80211_chan_def chandef; 7097 struct sk_buff *msg; 7098 void *hdr; 7099 u64 cookie; 7100 u32 duration; 7101 int err; 7102 7103 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] || 7104 !info->attrs[NL80211_ATTR_DURATION]) 7105 return -EINVAL; 7106 7107 duration = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]); 7108 7109 if (!rdev->ops->remain_on_channel || 7110 !(rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL)) 7111 return -EOPNOTSUPP; 7112 7113 /* 7114 * We should be on that channel for at least a minimum amount of 7115 * time (10ms) but no longer than the driver supports. 7116 */ 7117 if (duration < NL80211_MIN_REMAIN_ON_CHANNEL_TIME || 7118 duration > rdev->wiphy.max_remain_on_channel_duration) 7119 return -EINVAL; 7120 7121 err = nl80211_parse_chandef(rdev, info, &chandef); 7122 if (err) 7123 return err; 7124 7125 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 7126 if (!msg) 7127 return -ENOMEM; 7128 7129 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0, 7130 NL80211_CMD_REMAIN_ON_CHANNEL); 7131 if (!hdr) { 7132 err = -ENOBUFS; 7133 goto free_msg; 7134 } 7135 7136 err = rdev_remain_on_channel(rdev, wdev, chandef.chan, 7137 duration, &cookie); 7138 7139 if (err) 7140 goto free_msg; 7141 7142 if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie)) 7143 goto nla_put_failure; 7144 7145 genlmsg_end(msg, hdr); 7146 7147 return genlmsg_reply(msg, info); 7148 7149 nla_put_failure: 7150 err = -ENOBUFS; 7151 free_msg: 7152 nlmsg_free(msg); 7153 return err; 7154 } 7155 7156 static int nl80211_cancel_remain_on_channel(struct sk_buff *skb, 7157 struct genl_info *info) 7158 { 7159 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 7160 struct wireless_dev *wdev = info->user_ptr[1]; 7161 u64 cookie; 7162 7163 if (!info->attrs[NL80211_ATTR_COOKIE]) 7164 return -EINVAL; 7165 7166 if (!rdev->ops->cancel_remain_on_channel) 7167 return -EOPNOTSUPP; 7168 7169 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]); 7170 7171 return rdev_cancel_remain_on_channel(rdev, wdev, cookie); 7172 } 7173 7174 static u32 rateset_to_mask(struct ieee80211_supported_band *sband, 7175 u8 *rates, u8 rates_len) 7176 { 7177 u8 i; 7178 u32 mask = 0; 7179 7180 for (i = 0; i < rates_len; i++) { 7181 int rate = (rates[i] & 0x7f) * 5; 7182 int ridx; 7183 for (ridx = 0; ridx < sband->n_bitrates; ridx++) { 7184 struct ieee80211_rate *srate = 7185 &sband->bitrates[ridx]; 7186 if (rate == srate->bitrate) { 7187 mask |= 1 << ridx; 7188 break; 7189 } 7190 } 7191 if (ridx == sband->n_bitrates) 7192 return 0; /* rate not found */ 7193 } 7194 7195 return mask; 7196 } 7197 7198 static bool ht_rateset_to_mask(struct ieee80211_supported_band *sband, 7199 u8 *rates, u8 rates_len, 7200 u8 mcs[IEEE80211_HT_MCS_MASK_LEN]) 7201 { 7202 u8 i; 7203 7204 memset(mcs, 0, IEEE80211_HT_MCS_MASK_LEN); 7205 7206 for (i = 0; i < rates_len; i++) { 7207 int ridx, rbit; 7208 7209 ridx = rates[i] / 8; 7210 rbit = BIT(rates[i] % 8); 7211 7212 /* check validity */ 7213 if ((ridx < 0) || (ridx >= IEEE80211_HT_MCS_MASK_LEN)) 7214 return false; 7215 7216 /* check availability */ 7217 if (sband->ht_cap.mcs.rx_mask[ridx] & rbit) 7218 mcs[ridx] |= rbit; 7219 else 7220 return false; 7221 } 7222 7223 return true; 7224 } 7225 7226 static const struct nla_policy nl80211_txattr_policy[NL80211_TXRATE_MAX + 1] = { 7227 [NL80211_TXRATE_LEGACY] = { .type = NLA_BINARY, 7228 .len = NL80211_MAX_SUPP_RATES }, 7229 [NL80211_TXRATE_MCS] = { .type = NLA_BINARY, 7230 .len = NL80211_MAX_SUPP_HT_RATES }, 7231 }; 7232 7233 static int nl80211_set_tx_bitrate_mask(struct sk_buff *skb, 7234 struct genl_info *info) 7235 { 7236 struct nlattr *tb[NL80211_TXRATE_MAX + 1]; 7237 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 7238 struct cfg80211_bitrate_mask mask; 7239 int rem, i; 7240 struct net_device *dev = info->user_ptr[1]; 7241 struct nlattr *tx_rates; 7242 struct ieee80211_supported_band *sband; 7243 7244 if (info->attrs[NL80211_ATTR_TX_RATES] == NULL) 7245 return -EINVAL; 7246 7247 if (!rdev->ops->set_bitrate_mask) 7248 return -EOPNOTSUPP; 7249 7250 memset(&mask, 0, sizeof(mask)); 7251 /* Default to all rates enabled */ 7252 for (i = 0; i < IEEE80211_NUM_BANDS; i++) { 7253 sband = rdev->wiphy.bands[i]; 7254 mask.control[i].legacy = 7255 sband ? (1 << sband->n_bitrates) - 1 : 0; 7256 if (sband) 7257 memcpy(mask.control[i].mcs, 7258 sband->ht_cap.mcs.rx_mask, 7259 sizeof(mask.control[i].mcs)); 7260 else 7261 memset(mask.control[i].mcs, 0, 7262 sizeof(mask.control[i].mcs)); 7263 } 7264 7265 /* 7266 * The nested attribute uses enum nl80211_band as the index. This maps 7267 * directly to the enum ieee80211_band values used in cfg80211. 7268 */ 7269 BUILD_BUG_ON(NL80211_MAX_SUPP_HT_RATES > IEEE80211_HT_MCS_MASK_LEN * 8); 7270 nla_for_each_nested(tx_rates, info->attrs[NL80211_ATTR_TX_RATES], rem) 7271 { 7272 enum ieee80211_band band = nla_type(tx_rates); 7273 if (band < 0 || band >= IEEE80211_NUM_BANDS) 7274 return -EINVAL; 7275 sband = rdev->wiphy.bands[band]; 7276 if (sband == NULL) 7277 return -EINVAL; 7278 nla_parse(tb, NL80211_TXRATE_MAX, nla_data(tx_rates), 7279 nla_len(tx_rates), nl80211_txattr_policy); 7280 if (tb[NL80211_TXRATE_LEGACY]) { 7281 mask.control[band].legacy = rateset_to_mask( 7282 sband, 7283 nla_data(tb[NL80211_TXRATE_LEGACY]), 7284 nla_len(tb[NL80211_TXRATE_LEGACY])); 7285 if ((mask.control[band].legacy == 0) && 7286 nla_len(tb[NL80211_TXRATE_LEGACY])) 7287 return -EINVAL; 7288 } 7289 if (tb[NL80211_TXRATE_MCS]) { 7290 if (!ht_rateset_to_mask( 7291 sband, 7292 nla_data(tb[NL80211_TXRATE_MCS]), 7293 nla_len(tb[NL80211_TXRATE_MCS]), 7294 mask.control[band].mcs)) 7295 return -EINVAL; 7296 } 7297 7298 if (mask.control[band].legacy == 0) { 7299 /* don't allow empty legacy rates if HT 7300 * is not even supported. */ 7301 if (!rdev->wiphy.bands[band]->ht_cap.ht_supported) 7302 return -EINVAL; 7303 7304 for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++) 7305 if (mask.control[band].mcs[i]) 7306 break; 7307 7308 /* legacy and mcs rates may not be both empty */ 7309 if (i == IEEE80211_HT_MCS_MASK_LEN) 7310 return -EINVAL; 7311 } 7312 } 7313 7314 return rdev_set_bitrate_mask(rdev, dev, NULL, &mask); 7315 } 7316 7317 static int nl80211_register_mgmt(struct sk_buff *skb, struct genl_info *info) 7318 { 7319 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 7320 struct wireless_dev *wdev = info->user_ptr[1]; 7321 u16 frame_type = IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION; 7322 7323 if (!info->attrs[NL80211_ATTR_FRAME_MATCH]) 7324 return -EINVAL; 7325 7326 if (info->attrs[NL80211_ATTR_FRAME_TYPE]) 7327 frame_type = nla_get_u16(info->attrs[NL80211_ATTR_FRAME_TYPE]); 7328 7329 switch (wdev->iftype) { 7330 case NL80211_IFTYPE_STATION: 7331 case NL80211_IFTYPE_ADHOC: 7332 case NL80211_IFTYPE_P2P_CLIENT: 7333 case NL80211_IFTYPE_AP: 7334 case NL80211_IFTYPE_AP_VLAN: 7335 case NL80211_IFTYPE_MESH_POINT: 7336 case NL80211_IFTYPE_P2P_GO: 7337 case NL80211_IFTYPE_P2P_DEVICE: 7338 break; 7339 default: 7340 return -EOPNOTSUPP; 7341 } 7342 7343 /* not much point in registering if we can't reply */ 7344 if (!rdev->ops->mgmt_tx) 7345 return -EOPNOTSUPP; 7346 7347 return cfg80211_mlme_register_mgmt(wdev, info->snd_portid, frame_type, 7348 nla_data(info->attrs[NL80211_ATTR_FRAME_MATCH]), 7349 nla_len(info->attrs[NL80211_ATTR_FRAME_MATCH])); 7350 } 7351 7352 static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info) 7353 { 7354 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 7355 struct wireless_dev *wdev = info->user_ptr[1]; 7356 struct cfg80211_chan_def chandef; 7357 int err; 7358 void *hdr = NULL; 7359 u64 cookie; 7360 struct sk_buff *msg = NULL; 7361 unsigned int wait = 0; 7362 bool offchan, no_cck, dont_wait_for_ack; 7363 7364 dont_wait_for_ack = info->attrs[NL80211_ATTR_DONT_WAIT_FOR_ACK]; 7365 7366 if (!info->attrs[NL80211_ATTR_FRAME]) 7367 return -EINVAL; 7368 7369 if (!rdev->ops->mgmt_tx) 7370 return -EOPNOTSUPP; 7371 7372 switch (wdev->iftype) { 7373 case NL80211_IFTYPE_P2P_DEVICE: 7374 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ]) 7375 return -EINVAL; 7376 case NL80211_IFTYPE_STATION: 7377 case NL80211_IFTYPE_ADHOC: 7378 case NL80211_IFTYPE_P2P_CLIENT: 7379 case NL80211_IFTYPE_AP: 7380 case NL80211_IFTYPE_AP_VLAN: 7381 case NL80211_IFTYPE_MESH_POINT: 7382 case NL80211_IFTYPE_P2P_GO: 7383 break; 7384 default: 7385 return -EOPNOTSUPP; 7386 } 7387 7388 if (info->attrs[NL80211_ATTR_DURATION]) { 7389 if (!(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX)) 7390 return -EINVAL; 7391 wait = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]); 7392 7393 /* 7394 * We should wait on the channel for at least a minimum amount 7395 * of time (10ms) but no longer than the driver supports. 7396 */ 7397 if (wait < NL80211_MIN_REMAIN_ON_CHANNEL_TIME || 7398 wait > rdev->wiphy.max_remain_on_channel_duration) 7399 return -EINVAL; 7400 7401 } 7402 7403 offchan = info->attrs[NL80211_ATTR_OFFCHANNEL_TX_OK]; 7404 7405 if (offchan && !(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX)) 7406 return -EINVAL; 7407 7408 no_cck = nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]); 7409 7410 /* get the channel if any has been specified, otherwise pass NULL to 7411 * the driver. The latter will use the current one 7412 */ 7413 chandef.chan = NULL; 7414 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) { 7415 err = nl80211_parse_chandef(rdev, info, &chandef); 7416 if (err) 7417 return err; 7418 } 7419 7420 if (!chandef.chan && offchan) 7421 return -EINVAL; 7422 7423 if (!dont_wait_for_ack) { 7424 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 7425 if (!msg) 7426 return -ENOMEM; 7427 7428 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0, 7429 NL80211_CMD_FRAME); 7430 if (!hdr) { 7431 err = -ENOBUFS; 7432 goto free_msg; 7433 } 7434 } 7435 7436 err = cfg80211_mlme_mgmt_tx(rdev, wdev, chandef.chan, offchan, wait, 7437 nla_data(info->attrs[NL80211_ATTR_FRAME]), 7438 nla_len(info->attrs[NL80211_ATTR_FRAME]), 7439 no_cck, dont_wait_for_ack, &cookie); 7440 if (err) 7441 goto free_msg; 7442 7443 if (msg) { 7444 if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie)) 7445 goto nla_put_failure; 7446 7447 genlmsg_end(msg, hdr); 7448 return genlmsg_reply(msg, info); 7449 } 7450 7451 return 0; 7452 7453 nla_put_failure: 7454 err = -ENOBUFS; 7455 free_msg: 7456 nlmsg_free(msg); 7457 return err; 7458 } 7459 7460 static int nl80211_tx_mgmt_cancel_wait(struct sk_buff *skb, struct genl_info *info) 7461 { 7462 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 7463 struct wireless_dev *wdev = info->user_ptr[1]; 7464 u64 cookie; 7465 7466 if (!info->attrs[NL80211_ATTR_COOKIE]) 7467 return -EINVAL; 7468 7469 if (!rdev->ops->mgmt_tx_cancel_wait) 7470 return -EOPNOTSUPP; 7471 7472 switch (wdev->iftype) { 7473 case NL80211_IFTYPE_STATION: 7474 case NL80211_IFTYPE_ADHOC: 7475 case NL80211_IFTYPE_P2P_CLIENT: 7476 case NL80211_IFTYPE_AP: 7477 case NL80211_IFTYPE_AP_VLAN: 7478 case NL80211_IFTYPE_P2P_GO: 7479 case NL80211_IFTYPE_P2P_DEVICE: 7480 break; 7481 default: 7482 return -EOPNOTSUPP; 7483 } 7484 7485 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]); 7486 7487 return rdev_mgmt_tx_cancel_wait(rdev, wdev, cookie); 7488 } 7489 7490 static int nl80211_set_power_save(struct sk_buff *skb, struct genl_info *info) 7491 { 7492 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 7493 struct wireless_dev *wdev; 7494 struct net_device *dev = info->user_ptr[1]; 7495 u8 ps_state; 7496 bool state; 7497 int err; 7498 7499 if (!info->attrs[NL80211_ATTR_PS_STATE]) 7500 return -EINVAL; 7501 7502 ps_state = nla_get_u32(info->attrs[NL80211_ATTR_PS_STATE]); 7503 7504 if (ps_state != NL80211_PS_DISABLED && ps_state != NL80211_PS_ENABLED) 7505 return -EINVAL; 7506 7507 wdev = dev->ieee80211_ptr; 7508 7509 if (!rdev->ops->set_power_mgmt) 7510 return -EOPNOTSUPP; 7511 7512 state = (ps_state == NL80211_PS_ENABLED) ? true : false; 7513 7514 if (state == wdev->ps) 7515 return 0; 7516 7517 err = rdev_set_power_mgmt(rdev, dev, state, wdev->ps_timeout); 7518 if (!err) 7519 wdev->ps = state; 7520 return err; 7521 } 7522 7523 static int nl80211_get_power_save(struct sk_buff *skb, struct genl_info *info) 7524 { 7525 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 7526 enum nl80211_ps_state ps_state; 7527 struct wireless_dev *wdev; 7528 struct net_device *dev = info->user_ptr[1]; 7529 struct sk_buff *msg; 7530 void *hdr; 7531 int err; 7532 7533 wdev = dev->ieee80211_ptr; 7534 7535 if (!rdev->ops->set_power_mgmt) 7536 return -EOPNOTSUPP; 7537 7538 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 7539 if (!msg) 7540 return -ENOMEM; 7541 7542 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0, 7543 NL80211_CMD_GET_POWER_SAVE); 7544 if (!hdr) { 7545 err = -ENOBUFS; 7546 goto free_msg; 7547 } 7548 7549 if (wdev->ps) 7550 ps_state = NL80211_PS_ENABLED; 7551 else 7552 ps_state = NL80211_PS_DISABLED; 7553 7554 if (nla_put_u32(msg, NL80211_ATTR_PS_STATE, ps_state)) 7555 goto nla_put_failure; 7556 7557 genlmsg_end(msg, hdr); 7558 return genlmsg_reply(msg, info); 7559 7560 nla_put_failure: 7561 err = -ENOBUFS; 7562 free_msg: 7563 nlmsg_free(msg); 7564 return err; 7565 } 7566 7567 static struct nla_policy 7568 nl80211_attr_cqm_policy[NL80211_ATTR_CQM_MAX + 1] __read_mostly = { 7569 [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_U32 }, 7570 [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U32 }, 7571 [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 }, 7572 [NL80211_ATTR_CQM_TXE_RATE] = { .type = NLA_U32 }, 7573 [NL80211_ATTR_CQM_TXE_PKTS] = { .type = NLA_U32 }, 7574 [NL80211_ATTR_CQM_TXE_INTVL] = { .type = NLA_U32 }, 7575 }; 7576 7577 static int nl80211_set_cqm_txe(struct genl_info *info, 7578 u32 rate, u32 pkts, u32 intvl) 7579 { 7580 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 7581 struct net_device *dev = info->user_ptr[1]; 7582 struct wireless_dev *wdev = dev->ieee80211_ptr; 7583 7584 if (rate > 100 || intvl > NL80211_CQM_TXE_MAX_INTVL) 7585 return -EINVAL; 7586 7587 if (!rdev->ops->set_cqm_txe_config) 7588 return -EOPNOTSUPP; 7589 7590 if (wdev->iftype != NL80211_IFTYPE_STATION && 7591 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT) 7592 return -EOPNOTSUPP; 7593 7594 return rdev_set_cqm_txe_config(rdev, dev, rate, pkts, intvl); 7595 } 7596 7597 static int nl80211_set_cqm_rssi(struct genl_info *info, 7598 s32 threshold, u32 hysteresis) 7599 { 7600 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 7601 struct net_device *dev = info->user_ptr[1]; 7602 struct wireless_dev *wdev = dev->ieee80211_ptr; 7603 7604 if (threshold > 0) 7605 return -EINVAL; 7606 7607 /* disabling - hysteresis should also be zero then */ 7608 if (threshold == 0) 7609 hysteresis = 0; 7610 7611 if (!rdev->ops->set_cqm_rssi_config) 7612 return -EOPNOTSUPP; 7613 7614 if (wdev->iftype != NL80211_IFTYPE_STATION && 7615 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT) 7616 return -EOPNOTSUPP; 7617 7618 return rdev_set_cqm_rssi_config(rdev, dev, threshold, hysteresis); 7619 } 7620 7621 static int nl80211_set_cqm(struct sk_buff *skb, struct genl_info *info) 7622 { 7623 struct nlattr *attrs[NL80211_ATTR_CQM_MAX + 1]; 7624 struct nlattr *cqm; 7625 int err; 7626 7627 cqm = info->attrs[NL80211_ATTR_CQM]; 7628 if (!cqm) 7629 return -EINVAL; 7630 7631 err = nla_parse_nested(attrs, NL80211_ATTR_CQM_MAX, cqm, 7632 nl80211_attr_cqm_policy); 7633 if (err) 7634 return err; 7635 7636 if (attrs[NL80211_ATTR_CQM_RSSI_THOLD] && 7637 attrs[NL80211_ATTR_CQM_RSSI_HYST]) { 7638 s32 threshold = nla_get_s32(attrs[NL80211_ATTR_CQM_RSSI_THOLD]); 7639 u32 hysteresis = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_HYST]); 7640 7641 return nl80211_set_cqm_rssi(info, threshold, hysteresis); 7642 } 7643 7644 if (attrs[NL80211_ATTR_CQM_TXE_RATE] && 7645 attrs[NL80211_ATTR_CQM_TXE_PKTS] && 7646 attrs[NL80211_ATTR_CQM_TXE_INTVL]) { 7647 u32 rate = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_RATE]); 7648 u32 pkts = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_PKTS]); 7649 u32 intvl = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_INTVL]); 7650 7651 return nl80211_set_cqm_txe(info, rate, pkts, intvl); 7652 } 7653 7654 return -EINVAL; 7655 } 7656 7657 static int nl80211_join_mesh(struct sk_buff *skb, struct genl_info *info) 7658 { 7659 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 7660 struct net_device *dev = info->user_ptr[1]; 7661 struct mesh_config cfg; 7662 struct mesh_setup setup; 7663 int err; 7664 7665 /* start with default */ 7666 memcpy(&cfg, &default_mesh_config, sizeof(cfg)); 7667 memcpy(&setup, &default_mesh_setup, sizeof(setup)); 7668 7669 if (info->attrs[NL80211_ATTR_MESH_CONFIG]) { 7670 /* and parse parameters if given */ 7671 err = nl80211_parse_mesh_config(info, &cfg, NULL); 7672 if (err) 7673 return err; 7674 } 7675 7676 if (!info->attrs[NL80211_ATTR_MESH_ID] || 7677 !nla_len(info->attrs[NL80211_ATTR_MESH_ID])) 7678 return -EINVAL; 7679 7680 setup.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]); 7681 setup.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]); 7682 7683 if (info->attrs[NL80211_ATTR_MCAST_RATE] && 7684 !nl80211_parse_mcast_rate(rdev, setup.mcast_rate, 7685 nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE]))) 7686 return -EINVAL; 7687 7688 if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) { 7689 setup.beacon_interval = 7690 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]); 7691 if (setup.beacon_interval < 10 || 7692 setup.beacon_interval > 10000) 7693 return -EINVAL; 7694 } 7695 7696 if (info->attrs[NL80211_ATTR_DTIM_PERIOD]) { 7697 setup.dtim_period = 7698 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]); 7699 if (setup.dtim_period < 1 || setup.dtim_period > 100) 7700 return -EINVAL; 7701 } 7702 7703 if (info->attrs[NL80211_ATTR_MESH_SETUP]) { 7704 /* parse additional setup parameters if given */ 7705 err = nl80211_parse_mesh_setup(info, &setup); 7706 if (err) 7707 return err; 7708 } 7709 7710 if (setup.user_mpm) 7711 cfg.auto_open_plinks = false; 7712 7713 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) { 7714 err = nl80211_parse_chandef(rdev, info, &setup.chandef); 7715 if (err) 7716 return err; 7717 } else { 7718 /* cfg80211_join_mesh() will sort it out */ 7719 setup.chandef.chan = NULL; 7720 } 7721 7722 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) { 7723 u8 *rates = nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]); 7724 int n_rates = 7725 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]); 7726 struct ieee80211_supported_band *sband; 7727 7728 if (!setup.chandef.chan) 7729 return -EINVAL; 7730 7731 sband = rdev->wiphy.bands[setup.chandef.chan->band]; 7732 7733 err = ieee80211_get_ratemask(sband, rates, n_rates, 7734 &setup.basic_rates); 7735 if (err) 7736 return err; 7737 } 7738 7739 return cfg80211_join_mesh(rdev, dev, &setup, &cfg); 7740 } 7741 7742 static int nl80211_leave_mesh(struct sk_buff *skb, struct genl_info *info) 7743 { 7744 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 7745 struct net_device *dev = info->user_ptr[1]; 7746 7747 return cfg80211_leave_mesh(rdev, dev); 7748 } 7749 7750 #ifdef CONFIG_PM 7751 static int nl80211_send_wowlan_patterns(struct sk_buff *msg, 7752 struct cfg80211_registered_device *rdev) 7753 { 7754 struct cfg80211_wowlan *wowlan = rdev->wiphy.wowlan_config; 7755 struct nlattr *nl_pats, *nl_pat; 7756 int i, pat_len; 7757 7758 if (!wowlan->n_patterns) 7759 return 0; 7760 7761 nl_pats = nla_nest_start(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN); 7762 if (!nl_pats) 7763 return -ENOBUFS; 7764 7765 for (i = 0; i < wowlan->n_patterns; i++) { 7766 nl_pat = nla_nest_start(msg, i + 1); 7767 if (!nl_pat) 7768 return -ENOBUFS; 7769 pat_len = wowlan->patterns[i].pattern_len; 7770 if (nla_put(msg, NL80211_PKTPAT_MASK, DIV_ROUND_UP(pat_len, 8), 7771 wowlan->patterns[i].mask) || 7772 nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len, 7773 wowlan->patterns[i].pattern) || 7774 nla_put_u32(msg, NL80211_PKTPAT_OFFSET, 7775 wowlan->patterns[i].pkt_offset)) 7776 return -ENOBUFS; 7777 nla_nest_end(msg, nl_pat); 7778 } 7779 nla_nest_end(msg, nl_pats); 7780 7781 return 0; 7782 } 7783 7784 static int nl80211_send_wowlan_tcp(struct sk_buff *msg, 7785 struct cfg80211_wowlan_tcp *tcp) 7786 { 7787 struct nlattr *nl_tcp; 7788 7789 if (!tcp) 7790 return 0; 7791 7792 nl_tcp = nla_nest_start(msg, NL80211_WOWLAN_TRIG_TCP_CONNECTION); 7793 if (!nl_tcp) 7794 return -ENOBUFS; 7795 7796 if (nla_put_be32(msg, NL80211_WOWLAN_TCP_SRC_IPV4, tcp->src) || 7797 nla_put_be32(msg, NL80211_WOWLAN_TCP_DST_IPV4, tcp->dst) || 7798 nla_put(msg, NL80211_WOWLAN_TCP_DST_MAC, ETH_ALEN, tcp->dst_mac) || 7799 nla_put_u16(msg, NL80211_WOWLAN_TCP_SRC_PORT, tcp->src_port) || 7800 nla_put_u16(msg, NL80211_WOWLAN_TCP_DST_PORT, tcp->dst_port) || 7801 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD, 7802 tcp->payload_len, tcp->payload) || 7803 nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL, 7804 tcp->data_interval) || 7805 nla_put(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD, 7806 tcp->wake_len, tcp->wake_data) || 7807 nla_put(msg, NL80211_WOWLAN_TCP_WAKE_MASK, 7808 DIV_ROUND_UP(tcp->wake_len, 8), tcp->wake_mask)) 7809 return -ENOBUFS; 7810 7811 if (tcp->payload_seq.len && 7812 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ, 7813 sizeof(tcp->payload_seq), &tcp->payload_seq)) 7814 return -ENOBUFS; 7815 7816 if (tcp->payload_tok.len && 7817 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN, 7818 sizeof(tcp->payload_tok) + tcp->tokens_size, 7819 &tcp->payload_tok)) 7820 return -ENOBUFS; 7821 7822 nla_nest_end(msg, nl_tcp); 7823 7824 return 0; 7825 } 7826 7827 static int nl80211_get_wowlan(struct sk_buff *skb, struct genl_info *info) 7828 { 7829 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 7830 struct sk_buff *msg; 7831 void *hdr; 7832 u32 size = NLMSG_DEFAULT_SIZE; 7833 7834 if (!rdev->wiphy.wowlan) 7835 return -EOPNOTSUPP; 7836 7837 if (rdev->wiphy.wowlan_config && rdev->wiphy.wowlan_config->tcp) { 7838 /* adjust size to have room for all the data */ 7839 size += rdev->wiphy.wowlan_config->tcp->tokens_size + 7840 rdev->wiphy.wowlan_config->tcp->payload_len + 7841 rdev->wiphy.wowlan_config->tcp->wake_len + 7842 rdev->wiphy.wowlan_config->tcp->wake_len / 8; 7843 } 7844 7845 msg = nlmsg_new(size, GFP_KERNEL); 7846 if (!msg) 7847 return -ENOMEM; 7848 7849 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0, 7850 NL80211_CMD_GET_WOWLAN); 7851 if (!hdr) 7852 goto nla_put_failure; 7853 7854 if (rdev->wiphy.wowlan_config) { 7855 struct nlattr *nl_wowlan; 7856 7857 nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS); 7858 if (!nl_wowlan) 7859 goto nla_put_failure; 7860 7861 if ((rdev->wiphy.wowlan_config->any && 7862 nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) || 7863 (rdev->wiphy.wowlan_config->disconnect && 7864 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) || 7865 (rdev->wiphy.wowlan_config->magic_pkt && 7866 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) || 7867 (rdev->wiphy.wowlan_config->gtk_rekey_failure && 7868 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) || 7869 (rdev->wiphy.wowlan_config->eap_identity_req && 7870 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) || 7871 (rdev->wiphy.wowlan_config->four_way_handshake && 7872 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) || 7873 (rdev->wiphy.wowlan_config->rfkill_release && 7874 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE))) 7875 goto nla_put_failure; 7876 7877 if (nl80211_send_wowlan_patterns(msg, rdev)) 7878 goto nla_put_failure; 7879 7880 if (nl80211_send_wowlan_tcp(msg, 7881 rdev->wiphy.wowlan_config->tcp)) 7882 goto nla_put_failure; 7883 7884 nla_nest_end(msg, nl_wowlan); 7885 } 7886 7887 genlmsg_end(msg, hdr); 7888 return genlmsg_reply(msg, info); 7889 7890 nla_put_failure: 7891 nlmsg_free(msg); 7892 return -ENOBUFS; 7893 } 7894 7895 static int nl80211_parse_wowlan_tcp(struct cfg80211_registered_device *rdev, 7896 struct nlattr *attr, 7897 struct cfg80211_wowlan *trig) 7898 { 7899 struct nlattr *tb[NUM_NL80211_WOWLAN_TCP]; 7900 struct cfg80211_wowlan_tcp *cfg; 7901 struct nl80211_wowlan_tcp_data_token *tok = NULL; 7902 struct nl80211_wowlan_tcp_data_seq *seq = NULL; 7903 u32 size; 7904 u32 data_size, wake_size, tokens_size = 0, wake_mask_size; 7905 int err, port; 7906 7907 if (!rdev->wiphy.wowlan->tcp) 7908 return -EINVAL; 7909 7910 err = nla_parse(tb, MAX_NL80211_WOWLAN_TCP, 7911 nla_data(attr), nla_len(attr), 7912 nl80211_wowlan_tcp_policy); 7913 if (err) 7914 return err; 7915 7916 if (!tb[NL80211_WOWLAN_TCP_SRC_IPV4] || 7917 !tb[NL80211_WOWLAN_TCP_DST_IPV4] || 7918 !tb[NL80211_WOWLAN_TCP_DST_MAC] || 7919 !tb[NL80211_WOWLAN_TCP_DST_PORT] || 7920 !tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD] || 7921 !tb[NL80211_WOWLAN_TCP_DATA_INTERVAL] || 7922 !tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD] || 7923 !tb[NL80211_WOWLAN_TCP_WAKE_MASK]) 7924 return -EINVAL; 7925 7926 data_size = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]); 7927 if (data_size > rdev->wiphy.wowlan->tcp->data_payload_max) 7928 return -EINVAL; 7929 7930 if (nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) > 7931 rdev->wiphy.wowlan->tcp->data_interval_max || 7932 nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) == 0) 7933 return -EINVAL; 7934 7935 wake_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]); 7936 if (wake_size > rdev->wiphy.wowlan->tcp->wake_payload_max) 7937 return -EINVAL; 7938 7939 wake_mask_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_MASK]); 7940 if (wake_mask_size != DIV_ROUND_UP(wake_size, 8)) 7941 return -EINVAL; 7942 7943 if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]) { 7944 u32 tokln = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]); 7945 7946 tok = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]); 7947 tokens_size = tokln - sizeof(*tok); 7948 7949 if (!tok->len || tokens_size % tok->len) 7950 return -EINVAL; 7951 if (!rdev->wiphy.wowlan->tcp->tok) 7952 return -EINVAL; 7953 if (tok->len > rdev->wiphy.wowlan->tcp->tok->max_len) 7954 return -EINVAL; 7955 if (tok->len < rdev->wiphy.wowlan->tcp->tok->min_len) 7956 return -EINVAL; 7957 if (tokens_size > rdev->wiphy.wowlan->tcp->tok->bufsize) 7958 return -EINVAL; 7959 if (tok->offset + tok->len > data_size) 7960 return -EINVAL; 7961 } 7962 7963 if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]) { 7964 seq = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]); 7965 if (!rdev->wiphy.wowlan->tcp->seq) 7966 return -EINVAL; 7967 if (seq->len == 0 || seq->len > 4) 7968 return -EINVAL; 7969 if (seq->len + seq->offset > data_size) 7970 return -EINVAL; 7971 } 7972 7973 size = sizeof(*cfg); 7974 size += data_size; 7975 size += wake_size + wake_mask_size; 7976 size += tokens_size; 7977 7978 cfg = kzalloc(size, GFP_KERNEL); 7979 if (!cfg) 7980 return -ENOMEM; 7981 cfg->src = nla_get_be32(tb[NL80211_WOWLAN_TCP_SRC_IPV4]); 7982 cfg->dst = nla_get_be32(tb[NL80211_WOWLAN_TCP_DST_IPV4]); 7983 memcpy(cfg->dst_mac, nla_data(tb[NL80211_WOWLAN_TCP_DST_MAC]), 7984 ETH_ALEN); 7985 if (tb[NL80211_WOWLAN_TCP_SRC_PORT]) 7986 port = nla_get_u16(tb[NL80211_WOWLAN_TCP_SRC_PORT]); 7987 else 7988 port = 0; 7989 #ifdef CONFIG_INET 7990 /* allocate a socket and port for it and use it */ 7991 err = __sock_create(wiphy_net(&rdev->wiphy), PF_INET, SOCK_STREAM, 7992 IPPROTO_TCP, &cfg->sock, 1); 7993 if (err) { 7994 kfree(cfg); 7995 return err; 7996 } 7997 if (inet_csk_get_port(cfg->sock->sk, port)) { 7998 sock_release(cfg->sock); 7999 kfree(cfg); 8000 return -EADDRINUSE; 8001 } 8002 cfg->src_port = inet_sk(cfg->sock->sk)->inet_num; 8003 #else 8004 if (!port) { 8005 kfree(cfg); 8006 return -EINVAL; 8007 } 8008 cfg->src_port = port; 8009 #endif 8010 8011 cfg->dst_port = nla_get_u16(tb[NL80211_WOWLAN_TCP_DST_PORT]); 8012 cfg->payload_len = data_size; 8013 cfg->payload = (u8 *)cfg + sizeof(*cfg) + tokens_size; 8014 memcpy((void *)cfg->payload, 8015 nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]), 8016 data_size); 8017 if (seq) 8018 cfg->payload_seq = *seq; 8019 cfg->data_interval = nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]); 8020 cfg->wake_len = wake_size; 8021 cfg->wake_data = (u8 *)cfg + sizeof(*cfg) + tokens_size + data_size; 8022 memcpy((void *)cfg->wake_data, 8023 nla_data(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]), 8024 wake_size); 8025 cfg->wake_mask = (u8 *)cfg + sizeof(*cfg) + tokens_size + 8026 data_size + wake_size; 8027 memcpy((void *)cfg->wake_mask, 8028 nla_data(tb[NL80211_WOWLAN_TCP_WAKE_MASK]), 8029 wake_mask_size); 8030 if (tok) { 8031 cfg->tokens_size = tokens_size; 8032 memcpy(&cfg->payload_tok, tok, sizeof(*tok) + tokens_size); 8033 } 8034 8035 trig->tcp = cfg; 8036 8037 return 0; 8038 } 8039 8040 static int nl80211_set_wowlan(struct sk_buff *skb, struct genl_info *info) 8041 { 8042 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 8043 struct nlattr *tb[NUM_NL80211_WOWLAN_TRIG]; 8044 struct cfg80211_wowlan new_triggers = {}; 8045 struct cfg80211_wowlan *ntrig; 8046 const struct wiphy_wowlan_support *wowlan = rdev->wiphy.wowlan; 8047 int err, i; 8048 bool prev_enabled = rdev->wiphy.wowlan_config; 8049 8050 if (!wowlan) 8051 return -EOPNOTSUPP; 8052 8053 if (!info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]) { 8054 cfg80211_rdev_free_wowlan(rdev); 8055 rdev->wiphy.wowlan_config = NULL; 8056 goto set_wakeup; 8057 } 8058 8059 err = nla_parse(tb, MAX_NL80211_WOWLAN_TRIG, 8060 nla_data(info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]), 8061 nla_len(info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]), 8062 nl80211_wowlan_policy); 8063 if (err) 8064 return err; 8065 8066 if (tb[NL80211_WOWLAN_TRIG_ANY]) { 8067 if (!(wowlan->flags & WIPHY_WOWLAN_ANY)) 8068 return -EINVAL; 8069 new_triggers.any = true; 8070 } 8071 8072 if (tb[NL80211_WOWLAN_TRIG_DISCONNECT]) { 8073 if (!(wowlan->flags & WIPHY_WOWLAN_DISCONNECT)) 8074 return -EINVAL; 8075 new_triggers.disconnect = true; 8076 } 8077 8078 if (tb[NL80211_WOWLAN_TRIG_MAGIC_PKT]) { 8079 if (!(wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT)) 8080 return -EINVAL; 8081 new_triggers.magic_pkt = true; 8082 } 8083 8084 if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED]) 8085 return -EINVAL; 8086 8087 if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE]) { 8088 if (!(wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE)) 8089 return -EINVAL; 8090 new_triggers.gtk_rekey_failure = true; 8091 } 8092 8093 if (tb[NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST]) { 8094 if (!(wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ)) 8095 return -EINVAL; 8096 new_triggers.eap_identity_req = true; 8097 } 8098 8099 if (tb[NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE]) { 8100 if (!(wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE)) 8101 return -EINVAL; 8102 new_triggers.four_way_handshake = true; 8103 } 8104 8105 if (tb[NL80211_WOWLAN_TRIG_RFKILL_RELEASE]) { 8106 if (!(wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE)) 8107 return -EINVAL; 8108 new_triggers.rfkill_release = true; 8109 } 8110 8111 if (tb[NL80211_WOWLAN_TRIG_PKT_PATTERN]) { 8112 struct nlattr *pat; 8113 int n_patterns = 0; 8114 int rem, pat_len, mask_len, pkt_offset; 8115 struct nlattr *pat_tb[NUM_NL80211_PKTPAT]; 8116 8117 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN], 8118 rem) 8119 n_patterns++; 8120 if (n_patterns > wowlan->n_patterns) 8121 return -EINVAL; 8122 8123 new_triggers.patterns = kcalloc(n_patterns, 8124 sizeof(new_triggers.patterns[0]), 8125 GFP_KERNEL); 8126 if (!new_triggers.patterns) 8127 return -ENOMEM; 8128 8129 new_triggers.n_patterns = n_patterns; 8130 i = 0; 8131 8132 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN], 8133 rem) { 8134 nla_parse(pat_tb, MAX_NL80211_PKTPAT, nla_data(pat), 8135 nla_len(pat), NULL); 8136 err = -EINVAL; 8137 if (!pat_tb[NL80211_PKTPAT_MASK] || 8138 !pat_tb[NL80211_PKTPAT_PATTERN]) 8139 goto error; 8140 pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]); 8141 mask_len = DIV_ROUND_UP(pat_len, 8); 8142 if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len) 8143 goto error; 8144 if (pat_len > wowlan->pattern_max_len || 8145 pat_len < wowlan->pattern_min_len) 8146 goto error; 8147 8148 if (!pat_tb[NL80211_PKTPAT_OFFSET]) 8149 pkt_offset = 0; 8150 else 8151 pkt_offset = nla_get_u32( 8152 pat_tb[NL80211_PKTPAT_OFFSET]); 8153 if (pkt_offset > wowlan->max_pkt_offset) 8154 goto error; 8155 new_triggers.patterns[i].pkt_offset = pkt_offset; 8156 8157 new_triggers.patterns[i].mask = 8158 kmalloc(mask_len + pat_len, GFP_KERNEL); 8159 if (!new_triggers.patterns[i].mask) { 8160 err = -ENOMEM; 8161 goto error; 8162 } 8163 new_triggers.patterns[i].pattern = 8164 new_triggers.patterns[i].mask + mask_len; 8165 memcpy(new_triggers.patterns[i].mask, 8166 nla_data(pat_tb[NL80211_PKTPAT_MASK]), 8167 mask_len); 8168 new_triggers.patterns[i].pattern_len = pat_len; 8169 memcpy(new_triggers.patterns[i].pattern, 8170 nla_data(pat_tb[NL80211_PKTPAT_PATTERN]), 8171 pat_len); 8172 i++; 8173 } 8174 } 8175 8176 if (tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION]) { 8177 err = nl80211_parse_wowlan_tcp( 8178 rdev, tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION], 8179 &new_triggers); 8180 if (err) 8181 goto error; 8182 } 8183 8184 ntrig = kmemdup(&new_triggers, sizeof(new_triggers), GFP_KERNEL); 8185 if (!ntrig) { 8186 err = -ENOMEM; 8187 goto error; 8188 } 8189 cfg80211_rdev_free_wowlan(rdev); 8190 rdev->wiphy.wowlan_config = ntrig; 8191 8192 set_wakeup: 8193 if (rdev->ops->set_wakeup && 8194 prev_enabled != !!rdev->wiphy.wowlan_config) 8195 rdev_set_wakeup(rdev, rdev->wiphy.wowlan_config); 8196 8197 return 0; 8198 error: 8199 for (i = 0; i < new_triggers.n_patterns; i++) 8200 kfree(new_triggers.patterns[i].mask); 8201 kfree(new_triggers.patterns); 8202 if (new_triggers.tcp && new_triggers.tcp->sock) 8203 sock_release(new_triggers.tcp->sock); 8204 kfree(new_triggers.tcp); 8205 return err; 8206 } 8207 #endif 8208 8209 static int nl80211_send_coalesce_rules(struct sk_buff *msg, 8210 struct cfg80211_registered_device *rdev) 8211 { 8212 struct nlattr *nl_pats, *nl_pat, *nl_rule, *nl_rules; 8213 int i, j, pat_len; 8214 struct cfg80211_coalesce_rules *rule; 8215 8216 if (!rdev->coalesce->n_rules) 8217 return 0; 8218 8219 nl_rules = nla_nest_start(msg, NL80211_ATTR_COALESCE_RULE); 8220 if (!nl_rules) 8221 return -ENOBUFS; 8222 8223 for (i = 0; i < rdev->coalesce->n_rules; i++) { 8224 nl_rule = nla_nest_start(msg, i + 1); 8225 if (!nl_rule) 8226 return -ENOBUFS; 8227 8228 rule = &rdev->coalesce->rules[i]; 8229 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_DELAY, 8230 rule->delay)) 8231 return -ENOBUFS; 8232 8233 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_CONDITION, 8234 rule->condition)) 8235 return -ENOBUFS; 8236 8237 nl_pats = nla_nest_start(msg, 8238 NL80211_ATTR_COALESCE_RULE_PKT_PATTERN); 8239 if (!nl_pats) 8240 return -ENOBUFS; 8241 8242 for (j = 0; j < rule->n_patterns; j++) { 8243 nl_pat = nla_nest_start(msg, j + 1); 8244 if (!nl_pat) 8245 return -ENOBUFS; 8246 pat_len = rule->patterns[j].pattern_len; 8247 if (nla_put(msg, NL80211_PKTPAT_MASK, 8248 DIV_ROUND_UP(pat_len, 8), 8249 rule->patterns[j].mask) || 8250 nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len, 8251 rule->patterns[j].pattern) || 8252 nla_put_u32(msg, NL80211_PKTPAT_OFFSET, 8253 rule->patterns[j].pkt_offset)) 8254 return -ENOBUFS; 8255 nla_nest_end(msg, nl_pat); 8256 } 8257 nla_nest_end(msg, nl_pats); 8258 nla_nest_end(msg, nl_rule); 8259 } 8260 nla_nest_end(msg, nl_rules); 8261 8262 return 0; 8263 } 8264 8265 static int nl80211_get_coalesce(struct sk_buff *skb, struct genl_info *info) 8266 { 8267 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 8268 struct sk_buff *msg; 8269 void *hdr; 8270 8271 if (!rdev->wiphy.coalesce) 8272 return -EOPNOTSUPP; 8273 8274 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 8275 if (!msg) 8276 return -ENOMEM; 8277 8278 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0, 8279 NL80211_CMD_GET_COALESCE); 8280 if (!hdr) 8281 goto nla_put_failure; 8282 8283 if (rdev->coalesce && nl80211_send_coalesce_rules(msg, rdev)) 8284 goto nla_put_failure; 8285 8286 genlmsg_end(msg, hdr); 8287 return genlmsg_reply(msg, info); 8288 8289 nla_put_failure: 8290 nlmsg_free(msg); 8291 return -ENOBUFS; 8292 } 8293 8294 void cfg80211_rdev_free_coalesce(struct cfg80211_registered_device *rdev) 8295 { 8296 struct cfg80211_coalesce *coalesce = rdev->coalesce; 8297 int i, j; 8298 struct cfg80211_coalesce_rules *rule; 8299 8300 if (!coalesce) 8301 return; 8302 8303 for (i = 0; i < coalesce->n_rules; i++) { 8304 rule = &coalesce->rules[i]; 8305 for (j = 0; j < rule->n_patterns; j++) 8306 kfree(rule->patterns[j].mask); 8307 kfree(rule->patterns); 8308 } 8309 kfree(coalesce->rules); 8310 kfree(coalesce); 8311 rdev->coalesce = NULL; 8312 } 8313 8314 static int nl80211_parse_coalesce_rule(struct cfg80211_registered_device *rdev, 8315 struct nlattr *rule, 8316 struct cfg80211_coalesce_rules *new_rule) 8317 { 8318 int err, i; 8319 const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce; 8320 struct nlattr *tb[NUM_NL80211_ATTR_COALESCE_RULE], *pat; 8321 int rem, pat_len, mask_len, pkt_offset, n_patterns = 0; 8322 struct nlattr *pat_tb[NUM_NL80211_PKTPAT]; 8323 8324 err = nla_parse(tb, NL80211_ATTR_COALESCE_RULE_MAX, nla_data(rule), 8325 nla_len(rule), nl80211_coalesce_policy); 8326 if (err) 8327 return err; 8328 8329 if (tb[NL80211_ATTR_COALESCE_RULE_DELAY]) 8330 new_rule->delay = 8331 nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_DELAY]); 8332 if (new_rule->delay > coalesce->max_delay) 8333 return -EINVAL; 8334 8335 if (tb[NL80211_ATTR_COALESCE_RULE_CONDITION]) 8336 new_rule->condition = 8337 nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_CONDITION]); 8338 if (new_rule->condition != NL80211_COALESCE_CONDITION_MATCH && 8339 new_rule->condition != NL80211_COALESCE_CONDITION_NO_MATCH) 8340 return -EINVAL; 8341 8342 if (!tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN]) 8343 return -EINVAL; 8344 8345 nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN], 8346 rem) 8347 n_patterns++; 8348 if (n_patterns > coalesce->n_patterns) 8349 return -EINVAL; 8350 8351 new_rule->patterns = kcalloc(n_patterns, sizeof(new_rule->patterns[0]), 8352 GFP_KERNEL); 8353 if (!new_rule->patterns) 8354 return -ENOMEM; 8355 8356 new_rule->n_patterns = n_patterns; 8357 i = 0; 8358 8359 nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN], 8360 rem) { 8361 nla_parse(pat_tb, MAX_NL80211_PKTPAT, nla_data(pat), 8362 nla_len(pat), NULL); 8363 if (!pat_tb[NL80211_PKTPAT_MASK] || 8364 !pat_tb[NL80211_PKTPAT_PATTERN]) 8365 return -EINVAL; 8366 pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]); 8367 mask_len = DIV_ROUND_UP(pat_len, 8); 8368 if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len) 8369 return -EINVAL; 8370 if (pat_len > coalesce->pattern_max_len || 8371 pat_len < coalesce->pattern_min_len) 8372 return -EINVAL; 8373 8374 if (!pat_tb[NL80211_PKTPAT_OFFSET]) 8375 pkt_offset = 0; 8376 else 8377 pkt_offset = nla_get_u32(pat_tb[NL80211_PKTPAT_OFFSET]); 8378 if (pkt_offset > coalesce->max_pkt_offset) 8379 return -EINVAL; 8380 new_rule->patterns[i].pkt_offset = pkt_offset; 8381 8382 new_rule->patterns[i].mask = 8383 kmalloc(mask_len + pat_len, GFP_KERNEL); 8384 if (!new_rule->patterns[i].mask) 8385 return -ENOMEM; 8386 new_rule->patterns[i].pattern = 8387 new_rule->patterns[i].mask + mask_len; 8388 memcpy(new_rule->patterns[i].mask, 8389 nla_data(pat_tb[NL80211_PKTPAT_MASK]), mask_len); 8390 new_rule->patterns[i].pattern_len = pat_len; 8391 memcpy(new_rule->patterns[i].pattern, 8392 nla_data(pat_tb[NL80211_PKTPAT_PATTERN]), pat_len); 8393 i++; 8394 } 8395 8396 return 0; 8397 } 8398 8399 static int nl80211_set_coalesce(struct sk_buff *skb, struct genl_info *info) 8400 { 8401 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 8402 const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce; 8403 struct cfg80211_coalesce new_coalesce = {}; 8404 struct cfg80211_coalesce *n_coalesce; 8405 int err, rem_rule, n_rules = 0, i, j; 8406 struct nlattr *rule; 8407 struct cfg80211_coalesce_rules *tmp_rule; 8408 8409 if (!rdev->wiphy.coalesce || !rdev->ops->set_coalesce) 8410 return -EOPNOTSUPP; 8411 8412 if (!info->attrs[NL80211_ATTR_COALESCE_RULE]) { 8413 cfg80211_rdev_free_coalesce(rdev); 8414 rdev->ops->set_coalesce(&rdev->wiphy, NULL); 8415 return 0; 8416 } 8417 8418 nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE], 8419 rem_rule) 8420 n_rules++; 8421 if (n_rules > coalesce->n_rules) 8422 return -EINVAL; 8423 8424 new_coalesce.rules = kcalloc(n_rules, sizeof(new_coalesce.rules[0]), 8425 GFP_KERNEL); 8426 if (!new_coalesce.rules) 8427 return -ENOMEM; 8428 8429 new_coalesce.n_rules = n_rules; 8430 i = 0; 8431 8432 nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE], 8433 rem_rule) { 8434 err = nl80211_parse_coalesce_rule(rdev, rule, 8435 &new_coalesce.rules[i]); 8436 if (err) 8437 goto error; 8438 8439 i++; 8440 } 8441 8442 err = rdev->ops->set_coalesce(&rdev->wiphy, &new_coalesce); 8443 if (err) 8444 goto error; 8445 8446 n_coalesce = kmemdup(&new_coalesce, sizeof(new_coalesce), GFP_KERNEL); 8447 if (!n_coalesce) { 8448 err = -ENOMEM; 8449 goto error; 8450 } 8451 cfg80211_rdev_free_coalesce(rdev); 8452 rdev->coalesce = n_coalesce; 8453 8454 return 0; 8455 error: 8456 for (i = 0; i < new_coalesce.n_rules; i++) { 8457 tmp_rule = &new_coalesce.rules[i]; 8458 for (j = 0; j < tmp_rule->n_patterns; j++) 8459 kfree(tmp_rule->patterns[j].mask); 8460 kfree(tmp_rule->patterns); 8461 } 8462 kfree(new_coalesce.rules); 8463 8464 return err; 8465 } 8466 8467 static int nl80211_set_rekey_data(struct sk_buff *skb, struct genl_info *info) 8468 { 8469 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 8470 struct net_device *dev = info->user_ptr[1]; 8471 struct wireless_dev *wdev = dev->ieee80211_ptr; 8472 struct nlattr *tb[NUM_NL80211_REKEY_DATA]; 8473 struct cfg80211_gtk_rekey_data rekey_data; 8474 int err; 8475 8476 if (!info->attrs[NL80211_ATTR_REKEY_DATA]) 8477 return -EINVAL; 8478 8479 err = nla_parse(tb, MAX_NL80211_REKEY_DATA, 8480 nla_data(info->attrs[NL80211_ATTR_REKEY_DATA]), 8481 nla_len(info->attrs[NL80211_ATTR_REKEY_DATA]), 8482 nl80211_rekey_policy); 8483 if (err) 8484 return err; 8485 8486 if (nla_len(tb[NL80211_REKEY_DATA_REPLAY_CTR]) != NL80211_REPLAY_CTR_LEN) 8487 return -ERANGE; 8488 if (nla_len(tb[NL80211_REKEY_DATA_KEK]) != NL80211_KEK_LEN) 8489 return -ERANGE; 8490 if (nla_len(tb[NL80211_REKEY_DATA_KCK]) != NL80211_KCK_LEN) 8491 return -ERANGE; 8492 8493 memcpy(rekey_data.kek, nla_data(tb[NL80211_REKEY_DATA_KEK]), 8494 NL80211_KEK_LEN); 8495 memcpy(rekey_data.kck, nla_data(tb[NL80211_REKEY_DATA_KCK]), 8496 NL80211_KCK_LEN); 8497 memcpy(rekey_data.replay_ctr, 8498 nla_data(tb[NL80211_REKEY_DATA_REPLAY_CTR]), 8499 NL80211_REPLAY_CTR_LEN); 8500 8501 wdev_lock(wdev); 8502 if (!wdev->current_bss) { 8503 err = -ENOTCONN; 8504 goto out; 8505 } 8506 8507 if (!rdev->ops->set_rekey_data) { 8508 err = -EOPNOTSUPP; 8509 goto out; 8510 } 8511 8512 err = rdev_set_rekey_data(rdev, dev, &rekey_data); 8513 out: 8514 wdev_unlock(wdev); 8515 return err; 8516 } 8517 8518 static int nl80211_register_unexpected_frame(struct sk_buff *skb, 8519 struct genl_info *info) 8520 { 8521 struct net_device *dev = info->user_ptr[1]; 8522 struct wireless_dev *wdev = dev->ieee80211_ptr; 8523 8524 if (wdev->iftype != NL80211_IFTYPE_AP && 8525 wdev->iftype != NL80211_IFTYPE_P2P_GO) 8526 return -EINVAL; 8527 8528 if (wdev->ap_unexpected_nlportid) 8529 return -EBUSY; 8530 8531 wdev->ap_unexpected_nlportid = info->snd_portid; 8532 return 0; 8533 } 8534 8535 static int nl80211_probe_client(struct sk_buff *skb, 8536 struct genl_info *info) 8537 { 8538 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 8539 struct net_device *dev = info->user_ptr[1]; 8540 struct wireless_dev *wdev = dev->ieee80211_ptr; 8541 struct sk_buff *msg; 8542 void *hdr; 8543 const u8 *addr; 8544 u64 cookie; 8545 int err; 8546 8547 if (wdev->iftype != NL80211_IFTYPE_AP && 8548 wdev->iftype != NL80211_IFTYPE_P2P_GO) 8549 return -EOPNOTSUPP; 8550 8551 if (!info->attrs[NL80211_ATTR_MAC]) 8552 return -EINVAL; 8553 8554 if (!rdev->ops->probe_client) 8555 return -EOPNOTSUPP; 8556 8557 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 8558 if (!msg) 8559 return -ENOMEM; 8560 8561 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0, 8562 NL80211_CMD_PROBE_CLIENT); 8563 if (!hdr) { 8564 err = -ENOBUFS; 8565 goto free_msg; 8566 } 8567 8568 addr = nla_data(info->attrs[NL80211_ATTR_MAC]); 8569 8570 err = rdev_probe_client(rdev, dev, addr, &cookie); 8571 if (err) 8572 goto free_msg; 8573 8574 if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie)) 8575 goto nla_put_failure; 8576 8577 genlmsg_end(msg, hdr); 8578 8579 return genlmsg_reply(msg, info); 8580 8581 nla_put_failure: 8582 err = -ENOBUFS; 8583 free_msg: 8584 nlmsg_free(msg); 8585 return err; 8586 } 8587 8588 static int nl80211_register_beacons(struct sk_buff *skb, struct genl_info *info) 8589 { 8590 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 8591 struct cfg80211_beacon_registration *reg, *nreg; 8592 int rv; 8593 8594 if (!(rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS)) 8595 return -EOPNOTSUPP; 8596 8597 nreg = kzalloc(sizeof(*nreg), GFP_KERNEL); 8598 if (!nreg) 8599 return -ENOMEM; 8600 8601 /* First, check if already registered. */ 8602 spin_lock_bh(&rdev->beacon_registrations_lock); 8603 list_for_each_entry(reg, &rdev->beacon_registrations, list) { 8604 if (reg->nlportid == info->snd_portid) { 8605 rv = -EALREADY; 8606 goto out_err; 8607 } 8608 } 8609 /* Add it to the list */ 8610 nreg->nlportid = info->snd_portid; 8611 list_add(&nreg->list, &rdev->beacon_registrations); 8612 8613 spin_unlock_bh(&rdev->beacon_registrations_lock); 8614 8615 return 0; 8616 out_err: 8617 spin_unlock_bh(&rdev->beacon_registrations_lock); 8618 kfree(nreg); 8619 return rv; 8620 } 8621 8622 static int nl80211_start_p2p_device(struct sk_buff *skb, struct genl_info *info) 8623 { 8624 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 8625 struct wireless_dev *wdev = info->user_ptr[1]; 8626 int err; 8627 8628 if (!rdev->ops->start_p2p_device) 8629 return -EOPNOTSUPP; 8630 8631 if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE) 8632 return -EOPNOTSUPP; 8633 8634 if (wdev->p2p_started) 8635 return 0; 8636 8637 err = cfg80211_can_add_interface(rdev, wdev->iftype); 8638 if (err) 8639 return err; 8640 8641 err = rdev_start_p2p_device(rdev, wdev); 8642 if (err) 8643 return err; 8644 8645 wdev->p2p_started = true; 8646 rdev->opencount++; 8647 8648 return 0; 8649 } 8650 8651 static int nl80211_stop_p2p_device(struct sk_buff *skb, struct genl_info *info) 8652 { 8653 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 8654 struct wireless_dev *wdev = info->user_ptr[1]; 8655 8656 if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE) 8657 return -EOPNOTSUPP; 8658 8659 if (!rdev->ops->stop_p2p_device) 8660 return -EOPNOTSUPP; 8661 8662 cfg80211_stop_p2p_device(rdev, wdev); 8663 8664 return 0; 8665 } 8666 8667 static int nl80211_get_protocol_features(struct sk_buff *skb, 8668 struct genl_info *info) 8669 { 8670 void *hdr; 8671 struct sk_buff *msg; 8672 8673 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 8674 if (!msg) 8675 return -ENOMEM; 8676 8677 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0, 8678 NL80211_CMD_GET_PROTOCOL_FEATURES); 8679 if (!hdr) 8680 goto nla_put_failure; 8681 8682 if (nla_put_u32(msg, NL80211_ATTR_PROTOCOL_FEATURES, 8683 NL80211_PROTOCOL_FEATURE_SPLIT_WIPHY_DUMP)) 8684 goto nla_put_failure; 8685 8686 genlmsg_end(msg, hdr); 8687 return genlmsg_reply(msg, info); 8688 8689 nla_put_failure: 8690 kfree_skb(msg); 8691 return -ENOBUFS; 8692 } 8693 8694 static int nl80211_update_ft_ies(struct sk_buff *skb, struct genl_info *info) 8695 { 8696 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 8697 struct cfg80211_update_ft_ies_params ft_params; 8698 struct net_device *dev = info->user_ptr[1]; 8699 8700 if (!rdev->ops->update_ft_ies) 8701 return -EOPNOTSUPP; 8702 8703 if (!info->attrs[NL80211_ATTR_MDID] || 8704 !is_valid_ie_attr(info->attrs[NL80211_ATTR_IE])) 8705 return -EINVAL; 8706 8707 memset(&ft_params, 0, sizeof(ft_params)); 8708 ft_params.md = nla_get_u16(info->attrs[NL80211_ATTR_MDID]); 8709 ft_params.ie = nla_data(info->attrs[NL80211_ATTR_IE]); 8710 ft_params.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); 8711 8712 return rdev_update_ft_ies(rdev, dev, &ft_params); 8713 } 8714 8715 static int nl80211_crit_protocol_start(struct sk_buff *skb, 8716 struct genl_info *info) 8717 { 8718 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 8719 struct wireless_dev *wdev = info->user_ptr[1]; 8720 enum nl80211_crit_proto_id proto = NL80211_CRIT_PROTO_UNSPEC; 8721 u16 duration; 8722 int ret; 8723 8724 if (!rdev->ops->crit_proto_start) 8725 return -EOPNOTSUPP; 8726 8727 if (WARN_ON(!rdev->ops->crit_proto_stop)) 8728 return -EINVAL; 8729 8730 if (rdev->crit_proto_nlportid) 8731 return -EBUSY; 8732 8733 /* determine protocol if provided */ 8734 if (info->attrs[NL80211_ATTR_CRIT_PROT_ID]) 8735 proto = nla_get_u16(info->attrs[NL80211_ATTR_CRIT_PROT_ID]); 8736 8737 if (proto >= NUM_NL80211_CRIT_PROTO) 8738 return -EINVAL; 8739 8740 /* timeout must be provided */ 8741 if (!info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION]) 8742 return -EINVAL; 8743 8744 duration = 8745 nla_get_u16(info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION]); 8746 8747 if (duration > NL80211_CRIT_PROTO_MAX_DURATION) 8748 return -ERANGE; 8749 8750 ret = rdev_crit_proto_start(rdev, wdev, proto, duration); 8751 if (!ret) 8752 rdev->crit_proto_nlportid = info->snd_portid; 8753 8754 return ret; 8755 } 8756 8757 static int nl80211_crit_protocol_stop(struct sk_buff *skb, 8758 struct genl_info *info) 8759 { 8760 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 8761 struct wireless_dev *wdev = info->user_ptr[1]; 8762 8763 if (!rdev->ops->crit_proto_stop) 8764 return -EOPNOTSUPP; 8765 8766 if (rdev->crit_proto_nlportid) { 8767 rdev->crit_proto_nlportid = 0; 8768 rdev_crit_proto_stop(rdev, wdev); 8769 } 8770 return 0; 8771 } 8772 8773 #define NL80211_FLAG_NEED_WIPHY 0x01 8774 #define NL80211_FLAG_NEED_NETDEV 0x02 8775 #define NL80211_FLAG_NEED_RTNL 0x04 8776 #define NL80211_FLAG_CHECK_NETDEV_UP 0x08 8777 #define NL80211_FLAG_NEED_NETDEV_UP (NL80211_FLAG_NEED_NETDEV |\ 8778 NL80211_FLAG_CHECK_NETDEV_UP) 8779 #define NL80211_FLAG_NEED_WDEV 0x10 8780 /* If a netdev is associated, it must be UP, P2P must be started */ 8781 #define NL80211_FLAG_NEED_WDEV_UP (NL80211_FLAG_NEED_WDEV |\ 8782 NL80211_FLAG_CHECK_NETDEV_UP) 8783 8784 static int nl80211_pre_doit(struct genl_ops *ops, struct sk_buff *skb, 8785 struct genl_info *info) 8786 { 8787 struct cfg80211_registered_device *rdev; 8788 struct wireless_dev *wdev; 8789 struct net_device *dev; 8790 bool rtnl = ops->internal_flags & NL80211_FLAG_NEED_RTNL; 8791 8792 if (rtnl) 8793 rtnl_lock(); 8794 8795 if (ops->internal_flags & NL80211_FLAG_NEED_WIPHY) { 8796 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info); 8797 if (IS_ERR(rdev)) { 8798 if (rtnl) 8799 rtnl_unlock(); 8800 return PTR_ERR(rdev); 8801 } 8802 info->user_ptr[0] = rdev; 8803 } else if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV || 8804 ops->internal_flags & NL80211_FLAG_NEED_WDEV) { 8805 ASSERT_RTNL(); 8806 8807 wdev = __cfg80211_wdev_from_attrs(genl_info_net(info), 8808 info->attrs); 8809 if (IS_ERR(wdev)) { 8810 if (rtnl) 8811 rtnl_unlock(); 8812 return PTR_ERR(wdev); 8813 } 8814 8815 dev = wdev->netdev; 8816 rdev = wiphy_to_dev(wdev->wiphy); 8817 8818 if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV) { 8819 if (!dev) { 8820 if (rtnl) 8821 rtnl_unlock(); 8822 return -EINVAL; 8823 } 8824 8825 info->user_ptr[1] = dev; 8826 } else { 8827 info->user_ptr[1] = wdev; 8828 } 8829 8830 if (dev) { 8831 if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP && 8832 !netif_running(dev)) { 8833 if (rtnl) 8834 rtnl_unlock(); 8835 return -ENETDOWN; 8836 } 8837 8838 dev_hold(dev); 8839 } else if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP) { 8840 if (!wdev->p2p_started) { 8841 if (rtnl) 8842 rtnl_unlock(); 8843 return -ENETDOWN; 8844 } 8845 } 8846 8847 info->user_ptr[0] = rdev; 8848 } 8849 8850 return 0; 8851 } 8852 8853 static void nl80211_post_doit(struct genl_ops *ops, struct sk_buff *skb, 8854 struct genl_info *info) 8855 { 8856 if (info->user_ptr[1]) { 8857 if (ops->internal_flags & NL80211_FLAG_NEED_WDEV) { 8858 struct wireless_dev *wdev = info->user_ptr[1]; 8859 8860 if (wdev->netdev) 8861 dev_put(wdev->netdev); 8862 } else { 8863 dev_put(info->user_ptr[1]); 8864 } 8865 } 8866 if (ops->internal_flags & NL80211_FLAG_NEED_RTNL) 8867 rtnl_unlock(); 8868 } 8869 8870 static struct genl_ops nl80211_ops[] = { 8871 { 8872 .cmd = NL80211_CMD_GET_WIPHY, 8873 .doit = nl80211_get_wiphy, 8874 .dumpit = nl80211_dump_wiphy, 8875 .done = nl80211_dump_wiphy_done, 8876 .policy = nl80211_policy, 8877 /* can be retrieved by unprivileged users */ 8878 .internal_flags = NL80211_FLAG_NEED_WIPHY | 8879 NL80211_FLAG_NEED_RTNL, 8880 }, 8881 { 8882 .cmd = NL80211_CMD_SET_WIPHY, 8883 .doit = nl80211_set_wiphy, 8884 .policy = nl80211_policy, 8885 .flags = GENL_ADMIN_PERM, 8886 .internal_flags = NL80211_FLAG_NEED_RTNL, 8887 }, 8888 { 8889 .cmd = NL80211_CMD_GET_INTERFACE, 8890 .doit = nl80211_get_interface, 8891 .dumpit = nl80211_dump_interface, 8892 .policy = nl80211_policy, 8893 /* can be retrieved by unprivileged users */ 8894 .internal_flags = NL80211_FLAG_NEED_WDEV | 8895 NL80211_FLAG_NEED_RTNL, 8896 }, 8897 { 8898 .cmd = NL80211_CMD_SET_INTERFACE, 8899 .doit = nl80211_set_interface, 8900 .policy = nl80211_policy, 8901 .flags = GENL_ADMIN_PERM, 8902 .internal_flags = NL80211_FLAG_NEED_NETDEV | 8903 NL80211_FLAG_NEED_RTNL, 8904 }, 8905 { 8906 .cmd = NL80211_CMD_NEW_INTERFACE, 8907 .doit = nl80211_new_interface, 8908 .policy = nl80211_policy, 8909 .flags = GENL_ADMIN_PERM, 8910 .internal_flags = NL80211_FLAG_NEED_WIPHY | 8911 NL80211_FLAG_NEED_RTNL, 8912 }, 8913 { 8914 .cmd = NL80211_CMD_DEL_INTERFACE, 8915 .doit = nl80211_del_interface, 8916 .policy = nl80211_policy, 8917 .flags = GENL_ADMIN_PERM, 8918 .internal_flags = NL80211_FLAG_NEED_WDEV | 8919 NL80211_FLAG_NEED_RTNL, 8920 }, 8921 { 8922 .cmd = NL80211_CMD_GET_KEY, 8923 .doit = nl80211_get_key, 8924 .policy = nl80211_policy, 8925 .flags = GENL_ADMIN_PERM, 8926 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 8927 NL80211_FLAG_NEED_RTNL, 8928 }, 8929 { 8930 .cmd = NL80211_CMD_SET_KEY, 8931 .doit = nl80211_set_key, 8932 .policy = nl80211_policy, 8933 .flags = GENL_ADMIN_PERM, 8934 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 8935 NL80211_FLAG_NEED_RTNL, 8936 }, 8937 { 8938 .cmd = NL80211_CMD_NEW_KEY, 8939 .doit = nl80211_new_key, 8940 .policy = nl80211_policy, 8941 .flags = GENL_ADMIN_PERM, 8942 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 8943 NL80211_FLAG_NEED_RTNL, 8944 }, 8945 { 8946 .cmd = NL80211_CMD_DEL_KEY, 8947 .doit = nl80211_del_key, 8948 .policy = nl80211_policy, 8949 .flags = GENL_ADMIN_PERM, 8950 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 8951 NL80211_FLAG_NEED_RTNL, 8952 }, 8953 { 8954 .cmd = NL80211_CMD_SET_BEACON, 8955 .policy = nl80211_policy, 8956 .flags = GENL_ADMIN_PERM, 8957 .doit = nl80211_set_beacon, 8958 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 8959 NL80211_FLAG_NEED_RTNL, 8960 }, 8961 { 8962 .cmd = NL80211_CMD_START_AP, 8963 .policy = nl80211_policy, 8964 .flags = GENL_ADMIN_PERM, 8965 .doit = nl80211_start_ap, 8966 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 8967 NL80211_FLAG_NEED_RTNL, 8968 }, 8969 { 8970 .cmd = NL80211_CMD_STOP_AP, 8971 .policy = nl80211_policy, 8972 .flags = GENL_ADMIN_PERM, 8973 .doit = nl80211_stop_ap, 8974 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 8975 NL80211_FLAG_NEED_RTNL, 8976 }, 8977 { 8978 .cmd = NL80211_CMD_GET_STATION, 8979 .doit = nl80211_get_station, 8980 .dumpit = nl80211_dump_station, 8981 .policy = nl80211_policy, 8982 .internal_flags = NL80211_FLAG_NEED_NETDEV | 8983 NL80211_FLAG_NEED_RTNL, 8984 }, 8985 { 8986 .cmd = NL80211_CMD_SET_STATION, 8987 .doit = nl80211_set_station, 8988 .policy = nl80211_policy, 8989 .flags = GENL_ADMIN_PERM, 8990 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 8991 NL80211_FLAG_NEED_RTNL, 8992 }, 8993 { 8994 .cmd = NL80211_CMD_NEW_STATION, 8995 .doit = nl80211_new_station, 8996 .policy = nl80211_policy, 8997 .flags = GENL_ADMIN_PERM, 8998 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 8999 NL80211_FLAG_NEED_RTNL, 9000 }, 9001 { 9002 .cmd = NL80211_CMD_DEL_STATION, 9003 .doit = nl80211_del_station, 9004 .policy = nl80211_policy, 9005 .flags = GENL_ADMIN_PERM, 9006 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 9007 NL80211_FLAG_NEED_RTNL, 9008 }, 9009 { 9010 .cmd = NL80211_CMD_GET_MPATH, 9011 .doit = nl80211_get_mpath, 9012 .dumpit = nl80211_dump_mpath, 9013 .policy = nl80211_policy, 9014 .flags = GENL_ADMIN_PERM, 9015 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 9016 NL80211_FLAG_NEED_RTNL, 9017 }, 9018 { 9019 .cmd = NL80211_CMD_SET_MPATH, 9020 .doit = nl80211_set_mpath, 9021 .policy = nl80211_policy, 9022 .flags = GENL_ADMIN_PERM, 9023 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 9024 NL80211_FLAG_NEED_RTNL, 9025 }, 9026 { 9027 .cmd = NL80211_CMD_NEW_MPATH, 9028 .doit = nl80211_new_mpath, 9029 .policy = nl80211_policy, 9030 .flags = GENL_ADMIN_PERM, 9031 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 9032 NL80211_FLAG_NEED_RTNL, 9033 }, 9034 { 9035 .cmd = NL80211_CMD_DEL_MPATH, 9036 .doit = nl80211_del_mpath, 9037 .policy = nl80211_policy, 9038 .flags = GENL_ADMIN_PERM, 9039 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 9040 NL80211_FLAG_NEED_RTNL, 9041 }, 9042 { 9043 .cmd = NL80211_CMD_SET_BSS, 9044 .doit = nl80211_set_bss, 9045 .policy = nl80211_policy, 9046 .flags = GENL_ADMIN_PERM, 9047 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 9048 NL80211_FLAG_NEED_RTNL, 9049 }, 9050 { 9051 .cmd = NL80211_CMD_GET_REG, 9052 .doit = nl80211_get_reg, 9053 .policy = nl80211_policy, 9054 .internal_flags = NL80211_FLAG_NEED_RTNL, 9055 /* can be retrieved by unprivileged users */ 9056 }, 9057 { 9058 .cmd = NL80211_CMD_SET_REG, 9059 .doit = nl80211_set_reg, 9060 .policy = nl80211_policy, 9061 .flags = GENL_ADMIN_PERM, 9062 .internal_flags = NL80211_FLAG_NEED_RTNL, 9063 }, 9064 { 9065 .cmd = NL80211_CMD_REQ_SET_REG, 9066 .doit = nl80211_req_set_reg, 9067 .policy = nl80211_policy, 9068 .flags = GENL_ADMIN_PERM, 9069 }, 9070 { 9071 .cmd = NL80211_CMD_GET_MESH_CONFIG, 9072 .doit = nl80211_get_mesh_config, 9073 .policy = nl80211_policy, 9074 /* can be retrieved by unprivileged users */ 9075 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 9076 NL80211_FLAG_NEED_RTNL, 9077 }, 9078 { 9079 .cmd = NL80211_CMD_SET_MESH_CONFIG, 9080 .doit = nl80211_update_mesh_config, 9081 .policy = nl80211_policy, 9082 .flags = GENL_ADMIN_PERM, 9083 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 9084 NL80211_FLAG_NEED_RTNL, 9085 }, 9086 { 9087 .cmd = NL80211_CMD_TRIGGER_SCAN, 9088 .doit = nl80211_trigger_scan, 9089 .policy = nl80211_policy, 9090 .flags = GENL_ADMIN_PERM, 9091 .internal_flags = NL80211_FLAG_NEED_WDEV_UP | 9092 NL80211_FLAG_NEED_RTNL, 9093 }, 9094 { 9095 .cmd = NL80211_CMD_GET_SCAN, 9096 .policy = nl80211_policy, 9097 .dumpit = nl80211_dump_scan, 9098 }, 9099 { 9100 .cmd = NL80211_CMD_START_SCHED_SCAN, 9101 .doit = nl80211_start_sched_scan, 9102 .policy = nl80211_policy, 9103 .flags = GENL_ADMIN_PERM, 9104 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 9105 NL80211_FLAG_NEED_RTNL, 9106 }, 9107 { 9108 .cmd = NL80211_CMD_STOP_SCHED_SCAN, 9109 .doit = nl80211_stop_sched_scan, 9110 .policy = nl80211_policy, 9111 .flags = GENL_ADMIN_PERM, 9112 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 9113 NL80211_FLAG_NEED_RTNL, 9114 }, 9115 { 9116 .cmd = NL80211_CMD_AUTHENTICATE, 9117 .doit = nl80211_authenticate, 9118 .policy = nl80211_policy, 9119 .flags = GENL_ADMIN_PERM, 9120 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 9121 NL80211_FLAG_NEED_RTNL, 9122 }, 9123 { 9124 .cmd = NL80211_CMD_ASSOCIATE, 9125 .doit = nl80211_associate, 9126 .policy = nl80211_policy, 9127 .flags = GENL_ADMIN_PERM, 9128 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 9129 NL80211_FLAG_NEED_RTNL, 9130 }, 9131 { 9132 .cmd = NL80211_CMD_DEAUTHENTICATE, 9133 .doit = nl80211_deauthenticate, 9134 .policy = nl80211_policy, 9135 .flags = GENL_ADMIN_PERM, 9136 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 9137 NL80211_FLAG_NEED_RTNL, 9138 }, 9139 { 9140 .cmd = NL80211_CMD_DISASSOCIATE, 9141 .doit = nl80211_disassociate, 9142 .policy = nl80211_policy, 9143 .flags = GENL_ADMIN_PERM, 9144 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 9145 NL80211_FLAG_NEED_RTNL, 9146 }, 9147 { 9148 .cmd = NL80211_CMD_JOIN_IBSS, 9149 .doit = nl80211_join_ibss, 9150 .policy = nl80211_policy, 9151 .flags = GENL_ADMIN_PERM, 9152 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 9153 NL80211_FLAG_NEED_RTNL, 9154 }, 9155 { 9156 .cmd = NL80211_CMD_LEAVE_IBSS, 9157 .doit = nl80211_leave_ibss, 9158 .policy = nl80211_policy, 9159 .flags = GENL_ADMIN_PERM, 9160 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 9161 NL80211_FLAG_NEED_RTNL, 9162 }, 9163 #ifdef CONFIG_NL80211_TESTMODE 9164 { 9165 .cmd = NL80211_CMD_TESTMODE, 9166 .doit = nl80211_testmode_do, 9167 .dumpit = nl80211_testmode_dump, 9168 .policy = nl80211_policy, 9169 .flags = GENL_ADMIN_PERM, 9170 .internal_flags = NL80211_FLAG_NEED_WIPHY | 9171 NL80211_FLAG_NEED_RTNL, 9172 }, 9173 #endif 9174 { 9175 .cmd = NL80211_CMD_CONNECT, 9176 .doit = nl80211_connect, 9177 .policy = nl80211_policy, 9178 .flags = GENL_ADMIN_PERM, 9179 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 9180 NL80211_FLAG_NEED_RTNL, 9181 }, 9182 { 9183 .cmd = NL80211_CMD_DISCONNECT, 9184 .doit = nl80211_disconnect, 9185 .policy = nl80211_policy, 9186 .flags = GENL_ADMIN_PERM, 9187 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 9188 NL80211_FLAG_NEED_RTNL, 9189 }, 9190 { 9191 .cmd = NL80211_CMD_SET_WIPHY_NETNS, 9192 .doit = nl80211_wiphy_netns, 9193 .policy = nl80211_policy, 9194 .flags = GENL_ADMIN_PERM, 9195 .internal_flags = NL80211_FLAG_NEED_WIPHY | 9196 NL80211_FLAG_NEED_RTNL, 9197 }, 9198 { 9199 .cmd = NL80211_CMD_GET_SURVEY, 9200 .policy = nl80211_policy, 9201 .dumpit = nl80211_dump_survey, 9202 }, 9203 { 9204 .cmd = NL80211_CMD_SET_PMKSA, 9205 .doit = nl80211_setdel_pmksa, 9206 .policy = nl80211_policy, 9207 .flags = GENL_ADMIN_PERM, 9208 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 9209 NL80211_FLAG_NEED_RTNL, 9210 }, 9211 { 9212 .cmd = NL80211_CMD_DEL_PMKSA, 9213 .doit = nl80211_setdel_pmksa, 9214 .policy = nl80211_policy, 9215 .flags = GENL_ADMIN_PERM, 9216 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 9217 NL80211_FLAG_NEED_RTNL, 9218 }, 9219 { 9220 .cmd = NL80211_CMD_FLUSH_PMKSA, 9221 .doit = nl80211_flush_pmksa, 9222 .policy = nl80211_policy, 9223 .flags = GENL_ADMIN_PERM, 9224 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 9225 NL80211_FLAG_NEED_RTNL, 9226 }, 9227 { 9228 .cmd = NL80211_CMD_REMAIN_ON_CHANNEL, 9229 .doit = nl80211_remain_on_channel, 9230 .policy = nl80211_policy, 9231 .flags = GENL_ADMIN_PERM, 9232 .internal_flags = NL80211_FLAG_NEED_WDEV_UP | 9233 NL80211_FLAG_NEED_RTNL, 9234 }, 9235 { 9236 .cmd = NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL, 9237 .doit = nl80211_cancel_remain_on_channel, 9238 .policy = nl80211_policy, 9239 .flags = GENL_ADMIN_PERM, 9240 .internal_flags = NL80211_FLAG_NEED_WDEV_UP | 9241 NL80211_FLAG_NEED_RTNL, 9242 }, 9243 { 9244 .cmd = NL80211_CMD_SET_TX_BITRATE_MASK, 9245 .doit = nl80211_set_tx_bitrate_mask, 9246 .policy = nl80211_policy, 9247 .flags = GENL_ADMIN_PERM, 9248 .internal_flags = NL80211_FLAG_NEED_NETDEV | 9249 NL80211_FLAG_NEED_RTNL, 9250 }, 9251 { 9252 .cmd = NL80211_CMD_REGISTER_FRAME, 9253 .doit = nl80211_register_mgmt, 9254 .policy = nl80211_policy, 9255 .flags = GENL_ADMIN_PERM, 9256 .internal_flags = NL80211_FLAG_NEED_WDEV | 9257 NL80211_FLAG_NEED_RTNL, 9258 }, 9259 { 9260 .cmd = NL80211_CMD_FRAME, 9261 .doit = nl80211_tx_mgmt, 9262 .policy = nl80211_policy, 9263 .flags = GENL_ADMIN_PERM, 9264 .internal_flags = NL80211_FLAG_NEED_WDEV_UP | 9265 NL80211_FLAG_NEED_RTNL, 9266 }, 9267 { 9268 .cmd = NL80211_CMD_FRAME_WAIT_CANCEL, 9269 .doit = nl80211_tx_mgmt_cancel_wait, 9270 .policy = nl80211_policy, 9271 .flags = GENL_ADMIN_PERM, 9272 .internal_flags = NL80211_FLAG_NEED_WDEV_UP | 9273 NL80211_FLAG_NEED_RTNL, 9274 }, 9275 { 9276 .cmd = NL80211_CMD_SET_POWER_SAVE, 9277 .doit = nl80211_set_power_save, 9278 .policy = nl80211_policy, 9279 .flags = GENL_ADMIN_PERM, 9280 .internal_flags = NL80211_FLAG_NEED_NETDEV | 9281 NL80211_FLAG_NEED_RTNL, 9282 }, 9283 { 9284 .cmd = NL80211_CMD_GET_POWER_SAVE, 9285 .doit = nl80211_get_power_save, 9286 .policy = nl80211_policy, 9287 /* can be retrieved by unprivileged users */ 9288 .internal_flags = NL80211_FLAG_NEED_NETDEV | 9289 NL80211_FLAG_NEED_RTNL, 9290 }, 9291 { 9292 .cmd = NL80211_CMD_SET_CQM, 9293 .doit = nl80211_set_cqm, 9294 .policy = nl80211_policy, 9295 .flags = GENL_ADMIN_PERM, 9296 .internal_flags = NL80211_FLAG_NEED_NETDEV | 9297 NL80211_FLAG_NEED_RTNL, 9298 }, 9299 { 9300 .cmd = NL80211_CMD_SET_CHANNEL, 9301 .doit = nl80211_set_channel, 9302 .policy = nl80211_policy, 9303 .flags = GENL_ADMIN_PERM, 9304 .internal_flags = NL80211_FLAG_NEED_NETDEV | 9305 NL80211_FLAG_NEED_RTNL, 9306 }, 9307 { 9308 .cmd = NL80211_CMD_SET_WDS_PEER, 9309 .doit = nl80211_set_wds_peer, 9310 .policy = nl80211_policy, 9311 .flags = GENL_ADMIN_PERM, 9312 .internal_flags = NL80211_FLAG_NEED_NETDEV | 9313 NL80211_FLAG_NEED_RTNL, 9314 }, 9315 { 9316 .cmd = NL80211_CMD_JOIN_MESH, 9317 .doit = nl80211_join_mesh, 9318 .policy = nl80211_policy, 9319 .flags = GENL_ADMIN_PERM, 9320 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 9321 NL80211_FLAG_NEED_RTNL, 9322 }, 9323 { 9324 .cmd = NL80211_CMD_LEAVE_MESH, 9325 .doit = nl80211_leave_mesh, 9326 .policy = nl80211_policy, 9327 .flags = GENL_ADMIN_PERM, 9328 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 9329 NL80211_FLAG_NEED_RTNL, 9330 }, 9331 #ifdef CONFIG_PM 9332 { 9333 .cmd = NL80211_CMD_GET_WOWLAN, 9334 .doit = nl80211_get_wowlan, 9335 .policy = nl80211_policy, 9336 /* can be retrieved by unprivileged users */ 9337 .internal_flags = NL80211_FLAG_NEED_WIPHY | 9338 NL80211_FLAG_NEED_RTNL, 9339 }, 9340 { 9341 .cmd = NL80211_CMD_SET_WOWLAN, 9342 .doit = nl80211_set_wowlan, 9343 .policy = nl80211_policy, 9344 .flags = GENL_ADMIN_PERM, 9345 .internal_flags = NL80211_FLAG_NEED_WIPHY | 9346 NL80211_FLAG_NEED_RTNL, 9347 }, 9348 #endif 9349 { 9350 .cmd = NL80211_CMD_SET_REKEY_OFFLOAD, 9351 .doit = nl80211_set_rekey_data, 9352 .policy = nl80211_policy, 9353 .flags = GENL_ADMIN_PERM, 9354 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 9355 NL80211_FLAG_NEED_RTNL, 9356 }, 9357 { 9358 .cmd = NL80211_CMD_TDLS_MGMT, 9359 .doit = nl80211_tdls_mgmt, 9360 .policy = nl80211_policy, 9361 .flags = GENL_ADMIN_PERM, 9362 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 9363 NL80211_FLAG_NEED_RTNL, 9364 }, 9365 { 9366 .cmd = NL80211_CMD_TDLS_OPER, 9367 .doit = nl80211_tdls_oper, 9368 .policy = nl80211_policy, 9369 .flags = GENL_ADMIN_PERM, 9370 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 9371 NL80211_FLAG_NEED_RTNL, 9372 }, 9373 { 9374 .cmd = NL80211_CMD_UNEXPECTED_FRAME, 9375 .doit = nl80211_register_unexpected_frame, 9376 .policy = nl80211_policy, 9377 .flags = GENL_ADMIN_PERM, 9378 .internal_flags = NL80211_FLAG_NEED_NETDEV | 9379 NL80211_FLAG_NEED_RTNL, 9380 }, 9381 { 9382 .cmd = NL80211_CMD_PROBE_CLIENT, 9383 .doit = nl80211_probe_client, 9384 .policy = nl80211_policy, 9385 .flags = GENL_ADMIN_PERM, 9386 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 9387 NL80211_FLAG_NEED_RTNL, 9388 }, 9389 { 9390 .cmd = NL80211_CMD_REGISTER_BEACONS, 9391 .doit = nl80211_register_beacons, 9392 .policy = nl80211_policy, 9393 .flags = GENL_ADMIN_PERM, 9394 .internal_flags = NL80211_FLAG_NEED_WIPHY | 9395 NL80211_FLAG_NEED_RTNL, 9396 }, 9397 { 9398 .cmd = NL80211_CMD_SET_NOACK_MAP, 9399 .doit = nl80211_set_noack_map, 9400 .policy = nl80211_policy, 9401 .flags = GENL_ADMIN_PERM, 9402 .internal_flags = NL80211_FLAG_NEED_NETDEV | 9403 NL80211_FLAG_NEED_RTNL, 9404 }, 9405 { 9406 .cmd = NL80211_CMD_START_P2P_DEVICE, 9407 .doit = nl80211_start_p2p_device, 9408 .policy = nl80211_policy, 9409 .flags = GENL_ADMIN_PERM, 9410 .internal_flags = NL80211_FLAG_NEED_WDEV | 9411 NL80211_FLAG_NEED_RTNL, 9412 }, 9413 { 9414 .cmd = NL80211_CMD_STOP_P2P_DEVICE, 9415 .doit = nl80211_stop_p2p_device, 9416 .policy = nl80211_policy, 9417 .flags = GENL_ADMIN_PERM, 9418 .internal_flags = NL80211_FLAG_NEED_WDEV_UP | 9419 NL80211_FLAG_NEED_RTNL, 9420 }, 9421 { 9422 .cmd = NL80211_CMD_SET_MCAST_RATE, 9423 .doit = nl80211_set_mcast_rate, 9424 .policy = nl80211_policy, 9425 .flags = GENL_ADMIN_PERM, 9426 .internal_flags = NL80211_FLAG_NEED_NETDEV | 9427 NL80211_FLAG_NEED_RTNL, 9428 }, 9429 { 9430 .cmd = NL80211_CMD_SET_MAC_ACL, 9431 .doit = nl80211_set_mac_acl, 9432 .policy = nl80211_policy, 9433 .flags = GENL_ADMIN_PERM, 9434 .internal_flags = NL80211_FLAG_NEED_NETDEV | 9435 NL80211_FLAG_NEED_RTNL, 9436 }, 9437 { 9438 .cmd = NL80211_CMD_RADAR_DETECT, 9439 .doit = nl80211_start_radar_detection, 9440 .policy = nl80211_policy, 9441 .flags = GENL_ADMIN_PERM, 9442 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 9443 NL80211_FLAG_NEED_RTNL, 9444 }, 9445 { 9446 .cmd = NL80211_CMD_GET_PROTOCOL_FEATURES, 9447 .doit = nl80211_get_protocol_features, 9448 .policy = nl80211_policy, 9449 }, 9450 { 9451 .cmd = NL80211_CMD_UPDATE_FT_IES, 9452 .doit = nl80211_update_ft_ies, 9453 .policy = nl80211_policy, 9454 .flags = GENL_ADMIN_PERM, 9455 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 9456 NL80211_FLAG_NEED_RTNL, 9457 }, 9458 { 9459 .cmd = NL80211_CMD_CRIT_PROTOCOL_START, 9460 .doit = nl80211_crit_protocol_start, 9461 .policy = nl80211_policy, 9462 .flags = GENL_ADMIN_PERM, 9463 .internal_flags = NL80211_FLAG_NEED_WDEV_UP | 9464 NL80211_FLAG_NEED_RTNL, 9465 }, 9466 { 9467 .cmd = NL80211_CMD_CRIT_PROTOCOL_STOP, 9468 .doit = nl80211_crit_protocol_stop, 9469 .policy = nl80211_policy, 9470 .flags = GENL_ADMIN_PERM, 9471 .internal_flags = NL80211_FLAG_NEED_WDEV_UP | 9472 NL80211_FLAG_NEED_RTNL, 9473 }, 9474 { 9475 .cmd = NL80211_CMD_GET_COALESCE, 9476 .doit = nl80211_get_coalesce, 9477 .policy = nl80211_policy, 9478 .internal_flags = NL80211_FLAG_NEED_WIPHY | 9479 NL80211_FLAG_NEED_RTNL, 9480 }, 9481 { 9482 .cmd = NL80211_CMD_SET_COALESCE, 9483 .doit = nl80211_set_coalesce, 9484 .policy = nl80211_policy, 9485 .flags = GENL_ADMIN_PERM, 9486 .internal_flags = NL80211_FLAG_NEED_WIPHY | 9487 NL80211_FLAG_NEED_RTNL, 9488 }, 9489 { 9490 .cmd = NL80211_CMD_CHANNEL_SWITCH, 9491 .doit = nl80211_channel_switch, 9492 .policy = nl80211_policy, 9493 .flags = GENL_ADMIN_PERM, 9494 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 9495 NL80211_FLAG_NEED_RTNL, 9496 }, 9497 }; 9498 9499 static struct genl_multicast_group nl80211_mlme_mcgrp = { 9500 .name = "mlme", 9501 }; 9502 9503 /* multicast groups */ 9504 static struct genl_multicast_group nl80211_config_mcgrp = { 9505 .name = "config", 9506 }; 9507 static struct genl_multicast_group nl80211_scan_mcgrp = { 9508 .name = "scan", 9509 }; 9510 static struct genl_multicast_group nl80211_regulatory_mcgrp = { 9511 .name = "regulatory", 9512 }; 9513 9514 /* notification functions */ 9515 9516 void nl80211_notify_dev_rename(struct cfg80211_registered_device *rdev) 9517 { 9518 struct sk_buff *msg; 9519 struct nl80211_dump_wiphy_state state = {}; 9520 9521 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 9522 if (!msg) 9523 return; 9524 9525 if (nl80211_send_wiphy(rdev, msg, 0, 0, 0, &state) < 0) { 9526 nlmsg_free(msg); 9527 return; 9528 } 9529 9530 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0, 9531 nl80211_config_mcgrp.id, GFP_KERNEL); 9532 } 9533 9534 static int nl80211_add_scan_req(struct sk_buff *msg, 9535 struct cfg80211_registered_device *rdev) 9536 { 9537 struct cfg80211_scan_request *req = rdev->scan_req; 9538 struct nlattr *nest; 9539 int i; 9540 9541 if (WARN_ON(!req)) 9542 return 0; 9543 9544 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_SSIDS); 9545 if (!nest) 9546 goto nla_put_failure; 9547 for (i = 0; i < req->n_ssids; i++) { 9548 if (nla_put(msg, i, req->ssids[i].ssid_len, req->ssids[i].ssid)) 9549 goto nla_put_failure; 9550 } 9551 nla_nest_end(msg, nest); 9552 9553 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES); 9554 if (!nest) 9555 goto nla_put_failure; 9556 for (i = 0; i < req->n_channels; i++) { 9557 if (nla_put_u32(msg, i, req->channels[i]->center_freq)) 9558 goto nla_put_failure; 9559 } 9560 nla_nest_end(msg, nest); 9561 9562 if (req->ie && 9563 nla_put(msg, NL80211_ATTR_IE, req->ie_len, req->ie)) 9564 goto nla_put_failure; 9565 9566 if (req->flags) 9567 nla_put_u32(msg, NL80211_ATTR_SCAN_FLAGS, req->flags); 9568 9569 return 0; 9570 nla_put_failure: 9571 return -ENOBUFS; 9572 } 9573 9574 static int nl80211_send_scan_msg(struct sk_buff *msg, 9575 struct cfg80211_registered_device *rdev, 9576 struct wireless_dev *wdev, 9577 u32 portid, u32 seq, int flags, 9578 u32 cmd) 9579 { 9580 void *hdr; 9581 9582 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd); 9583 if (!hdr) 9584 return -1; 9585 9586 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 9587 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX, 9588 wdev->netdev->ifindex)) || 9589 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev))) 9590 goto nla_put_failure; 9591 9592 /* ignore errors and send incomplete event anyway */ 9593 nl80211_add_scan_req(msg, rdev); 9594 9595 return genlmsg_end(msg, hdr); 9596 9597 nla_put_failure: 9598 genlmsg_cancel(msg, hdr); 9599 return -EMSGSIZE; 9600 } 9601 9602 static int 9603 nl80211_send_sched_scan_msg(struct sk_buff *msg, 9604 struct cfg80211_registered_device *rdev, 9605 struct net_device *netdev, 9606 u32 portid, u32 seq, int flags, u32 cmd) 9607 { 9608 void *hdr; 9609 9610 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd); 9611 if (!hdr) 9612 return -1; 9613 9614 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 9615 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex)) 9616 goto nla_put_failure; 9617 9618 return genlmsg_end(msg, hdr); 9619 9620 nla_put_failure: 9621 genlmsg_cancel(msg, hdr); 9622 return -EMSGSIZE; 9623 } 9624 9625 void nl80211_send_scan_start(struct cfg80211_registered_device *rdev, 9626 struct wireless_dev *wdev) 9627 { 9628 struct sk_buff *msg; 9629 9630 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 9631 if (!msg) 9632 return; 9633 9634 if (nl80211_send_scan_msg(msg, rdev, wdev, 0, 0, 0, 9635 NL80211_CMD_TRIGGER_SCAN) < 0) { 9636 nlmsg_free(msg); 9637 return; 9638 } 9639 9640 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0, 9641 nl80211_scan_mcgrp.id, GFP_KERNEL); 9642 } 9643 9644 void nl80211_send_scan_done(struct cfg80211_registered_device *rdev, 9645 struct wireless_dev *wdev) 9646 { 9647 struct sk_buff *msg; 9648 9649 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 9650 if (!msg) 9651 return; 9652 9653 if (nl80211_send_scan_msg(msg, rdev, wdev, 0, 0, 0, 9654 NL80211_CMD_NEW_SCAN_RESULTS) < 0) { 9655 nlmsg_free(msg); 9656 return; 9657 } 9658 9659 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0, 9660 nl80211_scan_mcgrp.id, GFP_KERNEL); 9661 } 9662 9663 void nl80211_send_scan_aborted(struct cfg80211_registered_device *rdev, 9664 struct wireless_dev *wdev) 9665 { 9666 struct sk_buff *msg; 9667 9668 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 9669 if (!msg) 9670 return; 9671 9672 if (nl80211_send_scan_msg(msg, rdev, wdev, 0, 0, 0, 9673 NL80211_CMD_SCAN_ABORTED) < 0) { 9674 nlmsg_free(msg); 9675 return; 9676 } 9677 9678 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0, 9679 nl80211_scan_mcgrp.id, GFP_KERNEL); 9680 } 9681 9682 void nl80211_send_sched_scan_results(struct cfg80211_registered_device *rdev, 9683 struct net_device *netdev) 9684 { 9685 struct sk_buff *msg; 9686 9687 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 9688 if (!msg) 9689 return; 9690 9691 if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0, 9692 NL80211_CMD_SCHED_SCAN_RESULTS) < 0) { 9693 nlmsg_free(msg); 9694 return; 9695 } 9696 9697 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0, 9698 nl80211_scan_mcgrp.id, GFP_KERNEL); 9699 } 9700 9701 void nl80211_send_sched_scan(struct cfg80211_registered_device *rdev, 9702 struct net_device *netdev, u32 cmd) 9703 { 9704 struct sk_buff *msg; 9705 9706 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 9707 if (!msg) 9708 return; 9709 9710 if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0, cmd) < 0) { 9711 nlmsg_free(msg); 9712 return; 9713 } 9714 9715 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0, 9716 nl80211_scan_mcgrp.id, GFP_KERNEL); 9717 } 9718 9719 /* 9720 * This can happen on global regulatory changes or device specific settings 9721 * based on custom world regulatory domains. 9722 */ 9723 void nl80211_send_reg_change_event(struct regulatory_request *request) 9724 { 9725 struct sk_buff *msg; 9726 void *hdr; 9727 9728 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 9729 if (!msg) 9730 return; 9731 9732 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_CHANGE); 9733 if (!hdr) { 9734 nlmsg_free(msg); 9735 return; 9736 } 9737 9738 /* Userspace can always count this one always being set */ 9739 if (nla_put_u8(msg, NL80211_ATTR_REG_INITIATOR, request->initiator)) 9740 goto nla_put_failure; 9741 9742 if (request->alpha2[0] == '0' && request->alpha2[1] == '0') { 9743 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE, 9744 NL80211_REGDOM_TYPE_WORLD)) 9745 goto nla_put_failure; 9746 } else if (request->alpha2[0] == '9' && request->alpha2[1] == '9') { 9747 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE, 9748 NL80211_REGDOM_TYPE_CUSTOM_WORLD)) 9749 goto nla_put_failure; 9750 } else if ((request->alpha2[0] == '9' && request->alpha2[1] == '8') || 9751 request->intersect) { 9752 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE, 9753 NL80211_REGDOM_TYPE_INTERSECTION)) 9754 goto nla_put_failure; 9755 } else { 9756 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE, 9757 NL80211_REGDOM_TYPE_COUNTRY) || 9758 nla_put_string(msg, NL80211_ATTR_REG_ALPHA2, 9759 request->alpha2)) 9760 goto nla_put_failure; 9761 } 9762 9763 if (request->wiphy_idx != WIPHY_IDX_INVALID && 9764 nla_put_u32(msg, NL80211_ATTR_WIPHY, request->wiphy_idx)) 9765 goto nla_put_failure; 9766 9767 genlmsg_end(msg, hdr); 9768 9769 rcu_read_lock(); 9770 genlmsg_multicast_allns(msg, 0, nl80211_regulatory_mcgrp.id, 9771 GFP_ATOMIC); 9772 rcu_read_unlock(); 9773 9774 return; 9775 9776 nla_put_failure: 9777 genlmsg_cancel(msg, hdr); 9778 nlmsg_free(msg); 9779 } 9780 9781 static void nl80211_send_mlme_event(struct cfg80211_registered_device *rdev, 9782 struct net_device *netdev, 9783 const u8 *buf, size_t len, 9784 enum nl80211_commands cmd, gfp_t gfp) 9785 { 9786 struct sk_buff *msg; 9787 void *hdr; 9788 9789 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 9790 if (!msg) 9791 return; 9792 9793 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd); 9794 if (!hdr) { 9795 nlmsg_free(msg); 9796 return; 9797 } 9798 9799 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 9800 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) || 9801 nla_put(msg, NL80211_ATTR_FRAME, len, buf)) 9802 goto nla_put_failure; 9803 9804 genlmsg_end(msg, hdr); 9805 9806 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0, 9807 nl80211_mlme_mcgrp.id, gfp); 9808 return; 9809 9810 nla_put_failure: 9811 genlmsg_cancel(msg, hdr); 9812 nlmsg_free(msg); 9813 } 9814 9815 void nl80211_send_rx_auth(struct cfg80211_registered_device *rdev, 9816 struct net_device *netdev, const u8 *buf, 9817 size_t len, gfp_t gfp) 9818 { 9819 nl80211_send_mlme_event(rdev, netdev, buf, len, 9820 NL80211_CMD_AUTHENTICATE, gfp); 9821 } 9822 9823 void nl80211_send_rx_assoc(struct cfg80211_registered_device *rdev, 9824 struct net_device *netdev, const u8 *buf, 9825 size_t len, gfp_t gfp) 9826 { 9827 nl80211_send_mlme_event(rdev, netdev, buf, len, 9828 NL80211_CMD_ASSOCIATE, gfp); 9829 } 9830 9831 void nl80211_send_deauth(struct cfg80211_registered_device *rdev, 9832 struct net_device *netdev, const u8 *buf, 9833 size_t len, gfp_t gfp) 9834 { 9835 nl80211_send_mlme_event(rdev, netdev, buf, len, 9836 NL80211_CMD_DEAUTHENTICATE, gfp); 9837 } 9838 9839 void nl80211_send_disassoc(struct cfg80211_registered_device *rdev, 9840 struct net_device *netdev, const u8 *buf, 9841 size_t len, gfp_t gfp) 9842 { 9843 nl80211_send_mlme_event(rdev, netdev, buf, len, 9844 NL80211_CMD_DISASSOCIATE, gfp); 9845 } 9846 9847 void cfg80211_rx_unprot_mlme_mgmt(struct net_device *dev, const u8 *buf, 9848 size_t len) 9849 { 9850 struct wireless_dev *wdev = dev->ieee80211_ptr; 9851 struct wiphy *wiphy = wdev->wiphy; 9852 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); 9853 const struct ieee80211_mgmt *mgmt = (void *)buf; 9854 u32 cmd; 9855 9856 if (WARN_ON(len < 2)) 9857 return; 9858 9859 if (ieee80211_is_deauth(mgmt->frame_control)) 9860 cmd = NL80211_CMD_UNPROT_DEAUTHENTICATE; 9861 else 9862 cmd = NL80211_CMD_UNPROT_DISASSOCIATE; 9863 9864 trace_cfg80211_rx_unprot_mlme_mgmt(dev, buf, len); 9865 nl80211_send_mlme_event(rdev, dev, buf, len, cmd, GFP_ATOMIC); 9866 } 9867 EXPORT_SYMBOL(cfg80211_rx_unprot_mlme_mgmt); 9868 9869 static void nl80211_send_mlme_timeout(struct cfg80211_registered_device *rdev, 9870 struct net_device *netdev, int cmd, 9871 const u8 *addr, gfp_t gfp) 9872 { 9873 struct sk_buff *msg; 9874 void *hdr; 9875 9876 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 9877 if (!msg) 9878 return; 9879 9880 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd); 9881 if (!hdr) { 9882 nlmsg_free(msg); 9883 return; 9884 } 9885 9886 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 9887 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) || 9888 nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) || 9889 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) 9890 goto nla_put_failure; 9891 9892 genlmsg_end(msg, hdr); 9893 9894 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0, 9895 nl80211_mlme_mcgrp.id, gfp); 9896 return; 9897 9898 nla_put_failure: 9899 genlmsg_cancel(msg, hdr); 9900 nlmsg_free(msg); 9901 } 9902 9903 void nl80211_send_auth_timeout(struct cfg80211_registered_device *rdev, 9904 struct net_device *netdev, const u8 *addr, 9905 gfp_t gfp) 9906 { 9907 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_AUTHENTICATE, 9908 addr, gfp); 9909 } 9910 9911 void nl80211_send_assoc_timeout(struct cfg80211_registered_device *rdev, 9912 struct net_device *netdev, const u8 *addr, 9913 gfp_t gfp) 9914 { 9915 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_ASSOCIATE, 9916 addr, gfp); 9917 } 9918 9919 void nl80211_send_connect_result(struct cfg80211_registered_device *rdev, 9920 struct net_device *netdev, const u8 *bssid, 9921 const u8 *req_ie, size_t req_ie_len, 9922 const u8 *resp_ie, size_t resp_ie_len, 9923 u16 status, gfp_t gfp) 9924 { 9925 struct sk_buff *msg; 9926 void *hdr; 9927 9928 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 9929 if (!msg) 9930 return; 9931 9932 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONNECT); 9933 if (!hdr) { 9934 nlmsg_free(msg); 9935 return; 9936 } 9937 9938 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 9939 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) || 9940 (bssid && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid)) || 9941 nla_put_u16(msg, NL80211_ATTR_STATUS_CODE, status) || 9942 (req_ie && 9943 nla_put(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie)) || 9944 (resp_ie && 9945 nla_put(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie))) 9946 goto nla_put_failure; 9947 9948 genlmsg_end(msg, hdr); 9949 9950 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0, 9951 nl80211_mlme_mcgrp.id, gfp); 9952 return; 9953 9954 nla_put_failure: 9955 genlmsg_cancel(msg, hdr); 9956 nlmsg_free(msg); 9957 9958 } 9959 9960 void nl80211_send_roamed(struct cfg80211_registered_device *rdev, 9961 struct net_device *netdev, const u8 *bssid, 9962 const u8 *req_ie, size_t req_ie_len, 9963 const u8 *resp_ie, size_t resp_ie_len, gfp_t gfp) 9964 { 9965 struct sk_buff *msg; 9966 void *hdr; 9967 9968 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 9969 if (!msg) 9970 return; 9971 9972 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ROAM); 9973 if (!hdr) { 9974 nlmsg_free(msg); 9975 return; 9976 } 9977 9978 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 9979 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) || 9980 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid) || 9981 (req_ie && 9982 nla_put(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie)) || 9983 (resp_ie && 9984 nla_put(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie))) 9985 goto nla_put_failure; 9986 9987 genlmsg_end(msg, hdr); 9988 9989 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0, 9990 nl80211_mlme_mcgrp.id, gfp); 9991 return; 9992 9993 nla_put_failure: 9994 genlmsg_cancel(msg, hdr); 9995 nlmsg_free(msg); 9996 9997 } 9998 9999 void nl80211_send_disconnected(struct cfg80211_registered_device *rdev, 10000 struct net_device *netdev, u16 reason, 10001 const u8 *ie, size_t ie_len, bool from_ap) 10002 { 10003 struct sk_buff *msg; 10004 void *hdr; 10005 10006 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 10007 if (!msg) 10008 return; 10009 10010 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DISCONNECT); 10011 if (!hdr) { 10012 nlmsg_free(msg); 10013 return; 10014 } 10015 10016 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 10017 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) || 10018 (from_ap && reason && 10019 nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason)) || 10020 (from_ap && 10021 nla_put_flag(msg, NL80211_ATTR_DISCONNECTED_BY_AP)) || 10022 (ie && nla_put(msg, NL80211_ATTR_IE, ie_len, ie))) 10023 goto nla_put_failure; 10024 10025 genlmsg_end(msg, hdr); 10026 10027 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0, 10028 nl80211_mlme_mcgrp.id, GFP_KERNEL); 10029 return; 10030 10031 nla_put_failure: 10032 genlmsg_cancel(msg, hdr); 10033 nlmsg_free(msg); 10034 10035 } 10036 10037 void nl80211_send_ibss_bssid(struct cfg80211_registered_device *rdev, 10038 struct net_device *netdev, const u8 *bssid, 10039 gfp_t gfp) 10040 { 10041 struct sk_buff *msg; 10042 void *hdr; 10043 10044 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 10045 if (!msg) 10046 return; 10047 10048 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_JOIN_IBSS); 10049 if (!hdr) { 10050 nlmsg_free(msg); 10051 return; 10052 } 10053 10054 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 10055 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) || 10056 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid)) 10057 goto nla_put_failure; 10058 10059 genlmsg_end(msg, hdr); 10060 10061 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0, 10062 nl80211_mlme_mcgrp.id, gfp); 10063 return; 10064 10065 nla_put_failure: 10066 genlmsg_cancel(msg, hdr); 10067 nlmsg_free(msg); 10068 } 10069 10070 void cfg80211_notify_new_peer_candidate(struct net_device *dev, const u8 *addr, 10071 const u8* ie, u8 ie_len, gfp_t gfp) 10072 { 10073 struct wireless_dev *wdev = dev->ieee80211_ptr; 10074 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy); 10075 struct sk_buff *msg; 10076 void *hdr; 10077 10078 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_MESH_POINT)) 10079 return; 10080 10081 trace_cfg80211_notify_new_peer_candidate(dev, addr); 10082 10083 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 10084 if (!msg) 10085 return; 10086 10087 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NEW_PEER_CANDIDATE); 10088 if (!hdr) { 10089 nlmsg_free(msg); 10090 return; 10091 } 10092 10093 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 10094 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) || 10095 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) || 10096 (ie_len && ie && 10097 nla_put(msg, NL80211_ATTR_IE, ie_len , ie))) 10098 goto nla_put_failure; 10099 10100 genlmsg_end(msg, hdr); 10101 10102 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0, 10103 nl80211_mlme_mcgrp.id, gfp); 10104 return; 10105 10106 nla_put_failure: 10107 genlmsg_cancel(msg, hdr); 10108 nlmsg_free(msg); 10109 } 10110 EXPORT_SYMBOL(cfg80211_notify_new_peer_candidate); 10111 10112 void nl80211_michael_mic_failure(struct cfg80211_registered_device *rdev, 10113 struct net_device *netdev, const u8 *addr, 10114 enum nl80211_key_type key_type, int key_id, 10115 const u8 *tsc, gfp_t gfp) 10116 { 10117 struct sk_buff *msg; 10118 void *hdr; 10119 10120 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 10121 if (!msg) 10122 return; 10123 10124 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_MICHAEL_MIC_FAILURE); 10125 if (!hdr) { 10126 nlmsg_free(msg); 10127 return; 10128 } 10129 10130 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 10131 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) || 10132 (addr && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) || 10133 nla_put_u32(msg, NL80211_ATTR_KEY_TYPE, key_type) || 10134 (key_id != -1 && 10135 nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_id)) || 10136 (tsc && nla_put(msg, NL80211_ATTR_KEY_SEQ, 6, tsc))) 10137 goto nla_put_failure; 10138 10139 genlmsg_end(msg, hdr); 10140 10141 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0, 10142 nl80211_mlme_mcgrp.id, gfp); 10143 return; 10144 10145 nla_put_failure: 10146 genlmsg_cancel(msg, hdr); 10147 nlmsg_free(msg); 10148 } 10149 10150 void nl80211_send_beacon_hint_event(struct wiphy *wiphy, 10151 struct ieee80211_channel *channel_before, 10152 struct ieee80211_channel *channel_after) 10153 { 10154 struct sk_buff *msg; 10155 void *hdr; 10156 struct nlattr *nl_freq; 10157 10158 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC); 10159 if (!msg) 10160 return; 10161 10162 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_BEACON_HINT); 10163 if (!hdr) { 10164 nlmsg_free(msg); 10165 return; 10166 } 10167 10168 /* 10169 * Since we are applying the beacon hint to a wiphy we know its 10170 * wiphy_idx is valid 10171 */ 10172 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy))) 10173 goto nla_put_failure; 10174 10175 /* Before */ 10176 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_BEFORE); 10177 if (!nl_freq) 10178 goto nla_put_failure; 10179 if (nl80211_msg_put_channel(msg, channel_before, false)) 10180 goto nla_put_failure; 10181 nla_nest_end(msg, nl_freq); 10182 10183 /* After */ 10184 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_AFTER); 10185 if (!nl_freq) 10186 goto nla_put_failure; 10187 if (nl80211_msg_put_channel(msg, channel_after, false)) 10188 goto nla_put_failure; 10189 nla_nest_end(msg, nl_freq); 10190 10191 genlmsg_end(msg, hdr); 10192 10193 rcu_read_lock(); 10194 genlmsg_multicast_allns(msg, 0, nl80211_regulatory_mcgrp.id, 10195 GFP_ATOMIC); 10196 rcu_read_unlock(); 10197 10198 return; 10199 10200 nla_put_failure: 10201 genlmsg_cancel(msg, hdr); 10202 nlmsg_free(msg); 10203 } 10204 10205 static void nl80211_send_remain_on_chan_event( 10206 int cmd, struct cfg80211_registered_device *rdev, 10207 struct wireless_dev *wdev, u64 cookie, 10208 struct ieee80211_channel *chan, 10209 unsigned int duration, gfp_t gfp) 10210 { 10211 struct sk_buff *msg; 10212 void *hdr; 10213 10214 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 10215 if (!msg) 10216 return; 10217 10218 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd); 10219 if (!hdr) { 10220 nlmsg_free(msg); 10221 return; 10222 } 10223 10224 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 10225 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX, 10226 wdev->netdev->ifindex)) || 10227 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) || 10228 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, chan->center_freq) || 10229 nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE, 10230 NL80211_CHAN_NO_HT) || 10231 nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie)) 10232 goto nla_put_failure; 10233 10234 if (cmd == NL80211_CMD_REMAIN_ON_CHANNEL && 10235 nla_put_u32(msg, NL80211_ATTR_DURATION, duration)) 10236 goto nla_put_failure; 10237 10238 genlmsg_end(msg, hdr); 10239 10240 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0, 10241 nl80211_mlme_mcgrp.id, gfp); 10242 return; 10243 10244 nla_put_failure: 10245 genlmsg_cancel(msg, hdr); 10246 nlmsg_free(msg); 10247 } 10248 10249 void cfg80211_ready_on_channel(struct wireless_dev *wdev, u64 cookie, 10250 struct ieee80211_channel *chan, 10251 unsigned int duration, gfp_t gfp) 10252 { 10253 struct wiphy *wiphy = wdev->wiphy; 10254 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); 10255 10256 trace_cfg80211_ready_on_channel(wdev, cookie, chan, duration); 10257 nl80211_send_remain_on_chan_event(NL80211_CMD_REMAIN_ON_CHANNEL, 10258 rdev, wdev, cookie, chan, 10259 duration, gfp); 10260 } 10261 EXPORT_SYMBOL(cfg80211_ready_on_channel); 10262 10263 void cfg80211_remain_on_channel_expired(struct wireless_dev *wdev, u64 cookie, 10264 struct ieee80211_channel *chan, 10265 gfp_t gfp) 10266 { 10267 struct wiphy *wiphy = wdev->wiphy; 10268 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); 10269 10270 trace_cfg80211_ready_on_channel_expired(wdev, cookie, chan); 10271 nl80211_send_remain_on_chan_event(NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL, 10272 rdev, wdev, cookie, chan, 0, gfp); 10273 } 10274 EXPORT_SYMBOL(cfg80211_remain_on_channel_expired); 10275 10276 void cfg80211_new_sta(struct net_device *dev, const u8 *mac_addr, 10277 struct station_info *sinfo, gfp_t gfp) 10278 { 10279 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy; 10280 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); 10281 struct sk_buff *msg; 10282 10283 trace_cfg80211_new_sta(dev, mac_addr, sinfo); 10284 10285 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 10286 if (!msg) 10287 return; 10288 10289 if (nl80211_send_station(msg, 0, 0, 0, 10290 rdev, dev, mac_addr, sinfo) < 0) { 10291 nlmsg_free(msg); 10292 return; 10293 } 10294 10295 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0, 10296 nl80211_mlme_mcgrp.id, gfp); 10297 } 10298 EXPORT_SYMBOL(cfg80211_new_sta); 10299 10300 void cfg80211_del_sta(struct net_device *dev, const u8 *mac_addr, gfp_t gfp) 10301 { 10302 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy; 10303 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); 10304 struct sk_buff *msg; 10305 void *hdr; 10306 10307 trace_cfg80211_del_sta(dev, mac_addr); 10308 10309 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 10310 if (!msg) 10311 return; 10312 10313 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DEL_STATION); 10314 if (!hdr) { 10315 nlmsg_free(msg); 10316 return; 10317 } 10318 10319 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) || 10320 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr)) 10321 goto nla_put_failure; 10322 10323 genlmsg_end(msg, hdr); 10324 10325 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0, 10326 nl80211_mlme_mcgrp.id, gfp); 10327 return; 10328 10329 nla_put_failure: 10330 genlmsg_cancel(msg, hdr); 10331 nlmsg_free(msg); 10332 } 10333 EXPORT_SYMBOL(cfg80211_del_sta); 10334 10335 void cfg80211_conn_failed(struct net_device *dev, const u8 *mac_addr, 10336 enum nl80211_connect_failed_reason reason, 10337 gfp_t gfp) 10338 { 10339 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy; 10340 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); 10341 struct sk_buff *msg; 10342 void *hdr; 10343 10344 msg = nlmsg_new(NLMSG_GOODSIZE, gfp); 10345 if (!msg) 10346 return; 10347 10348 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONN_FAILED); 10349 if (!hdr) { 10350 nlmsg_free(msg); 10351 return; 10352 } 10353 10354 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) || 10355 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) || 10356 nla_put_u32(msg, NL80211_ATTR_CONN_FAILED_REASON, reason)) 10357 goto nla_put_failure; 10358 10359 genlmsg_end(msg, hdr); 10360 10361 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0, 10362 nl80211_mlme_mcgrp.id, gfp); 10363 return; 10364 10365 nla_put_failure: 10366 genlmsg_cancel(msg, hdr); 10367 nlmsg_free(msg); 10368 } 10369 EXPORT_SYMBOL(cfg80211_conn_failed); 10370 10371 static bool __nl80211_unexpected_frame(struct net_device *dev, u8 cmd, 10372 const u8 *addr, gfp_t gfp) 10373 { 10374 struct wireless_dev *wdev = dev->ieee80211_ptr; 10375 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy); 10376 struct sk_buff *msg; 10377 void *hdr; 10378 u32 nlportid = ACCESS_ONCE(wdev->ap_unexpected_nlportid); 10379 10380 if (!nlportid) 10381 return false; 10382 10383 msg = nlmsg_new(100, gfp); 10384 if (!msg) 10385 return true; 10386 10387 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd); 10388 if (!hdr) { 10389 nlmsg_free(msg); 10390 return true; 10391 } 10392 10393 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 10394 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) || 10395 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) 10396 goto nla_put_failure; 10397 10398 genlmsg_end(msg, hdr); 10399 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid); 10400 return true; 10401 10402 nla_put_failure: 10403 genlmsg_cancel(msg, hdr); 10404 nlmsg_free(msg); 10405 return true; 10406 } 10407 10408 bool cfg80211_rx_spurious_frame(struct net_device *dev, 10409 const u8 *addr, gfp_t gfp) 10410 { 10411 struct wireless_dev *wdev = dev->ieee80211_ptr; 10412 bool ret; 10413 10414 trace_cfg80211_rx_spurious_frame(dev, addr); 10415 10416 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP && 10417 wdev->iftype != NL80211_IFTYPE_P2P_GO)) { 10418 trace_cfg80211_return_bool(false); 10419 return false; 10420 } 10421 ret = __nl80211_unexpected_frame(dev, NL80211_CMD_UNEXPECTED_FRAME, 10422 addr, gfp); 10423 trace_cfg80211_return_bool(ret); 10424 return ret; 10425 } 10426 EXPORT_SYMBOL(cfg80211_rx_spurious_frame); 10427 10428 bool cfg80211_rx_unexpected_4addr_frame(struct net_device *dev, 10429 const u8 *addr, gfp_t gfp) 10430 { 10431 struct wireless_dev *wdev = dev->ieee80211_ptr; 10432 bool ret; 10433 10434 trace_cfg80211_rx_unexpected_4addr_frame(dev, addr); 10435 10436 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP && 10437 wdev->iftype != NL80211_IFTYPE_P2P_GO && 10438 wdev->iftype != NL80211_IFTYPE_AP_VLAN)) { 10439 trace_cfg80211_return_bool(false); 10440 return false; 10441 } 10442 ret = __nl80211_unexpected_frame(dev, 10443 NL80211_CMD_UNEXPECTED_4ADDR_FRAME, 10444 addr, gfp); 10445 trace_cfg80211_return_bool(ret); 10446 return ret; 10447 } 10448 EXPORT_SYMBOL(cfg80211_rx_unexpected_4addr_frame); 10449 10450 int nl80211_send_mgmt(struct cfg80211_registered_device *rdev, 10451 struct wireless_dev *wdev, u32 nlportid, 10452 int freq, int sig_dbm, 10453 const u8 *buf, size_t len, u32 flags, gfp_t gfp) 10454 { 10455 struct net_device *netdev = wdev->netdev; 10456 struct sk_buff *msg; 10457 void *hdr; 10458 10459 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 10460 if (!msg) 10461 return -ENOMEM; 10462 10463 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME); 10464 if (!hdr) { 10465 nlmsg_free(msg); 10466 return -ENOMEM; 10467 } 10468 10469 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 10470 (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX, 10471 netdev->ifindex)) || 10472 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) || 10473 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq) || 10474 (sig_dbm && 10475 nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) || 10476 nla_put(msg, NL80211_ATTR_FRAME, len, buf) || 10477 (flags && 10478 nla_put_u32(msg, NL80211_ATTR_RXMGMT_FLAGS, flags))) 10479 goto nla_put_failure; 10480 10481 genlmsg_end(msg, hdr); 10482 10483 return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid); 10484 10485 nla_put_failure: 10486 genlmsg_cancel(msg, hdr); 10487 nlmsg_free(msg); 10488 return -ENOBUFS; 10489 } 10490 10491 void cfg80211_mgmt_tx_status(struct wireless_dev *wdev, u64 cookie, 10492 const u8 *buf, size_t len, bool ack, gfp_t gfp) 10493 { 10494 struct wiphy *wiphy = wdev->wiphy; 10495 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); 10496 struct net_device *netdev = wdev->netdev; 10497 struct sk_buff *msg; 10498 void *hdr; 10499 10500 trace_cfg80211_mgmt_tx_status(wdev, cookie, ack); 10501 10502 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 10503 if (!msg) 10504 return; 10505 10506 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME_TX_STATUS); 10507 if (!hdr) { 10508 nlmsg_free(msg); 10509 return; 10510 } 10511 10512 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 10513 (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX, 10514 netdev->ifindex)) || 10515 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) || 10516 nla_put(msg, NL80211_ATTR_FRAME, len, buf) || 10517 nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie) || 10518 (ack && nla_put_flag(msg, NL80211_ATTR_ACK))) 10519 goto nla_put_failure; 10520 10521 genlmsg_end(msg, hdr); 10522 10523 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0, 10524 nl80211_mlme_mcgrp.id, gfp); 10525 return; 10526 10527 nla_put_failure: 10528 genlmsg_cancel(msg, hdr); 10529 nlmsg_free(msg); 10530 } 10531 EXPORT_SYMBOL(cfg80211_mgmt_tx_status); 10532 10533 void cfg80211_cqm_rssi_notify(struct net_device *dev, 10534 enum nl80211_cqm_rssi_threshold_event rssi_event, 10535 gfp_t gfp) 10536 { 10537 struct wireless_dev *wdev = dev->ieee80211_ptr; 10538 struct wiphy *wiphy = wdev->wiphy; 10539 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); 10540 struct sk_buff *msg; 10541 struct nlattr *pinfoattr; 10542 void *hdr; 10543 10544 trace_cfg80211_cqm_rssi_notify(dev, rssi_event); 10545 10546 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 10547 if (!msg) 10548 return; 10549 10550 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM); 10551 if (!hdr) { 10552 nlmsg_free(msg); 10553 return; 10554 } 10555 10556 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 10557 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex)) 10558 goto nla_put_failure; 10559 10560 pinfoattr = nla_nest_start(msg, NL80211_ATTR_CQM); 10561 if (!pinfoattr) 10562 goto nla_put_failure; 10563 10564 if (nla_put_u32(msg, NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT, 10565 rssi_event)) 10566 goto nla_put_failure; 10567 10568 nla_nest_end(msg, pinfoattr); 10569 10570 genlmsg_end(msg, hdr); 10571 10572 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0, 10573 nl80211_mlme_mcgrp.id, gfp); 10574 return; 10575 10576 nla_put_failure: 10577 genlmsg_cancel(msg, hdr); 10578 nlmsg_free(msg); 10579 } 10580 EXPORT_SYMBOL(cfg80211_cqm_rssi_notify); 10581 10582 static void nl80211_gtk_rekey_notify(struct cfg80211_registered_device *rdev, 10583 struct net_device *netdev, const u8 *bssid, 10584 const u8 *replay_ctr, gfp_t gfp) 10585 { 10586 struct sk_buff *msg; 10587 struct nlattr *rekey_attr; 10588 void *hdr; 10589 10590 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 10591 if (!msg) 10592 return; 10593 10594 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_REKEY_OFFLOAD); 10595 if (!hdr) { 10596 nlmsg_free(msg); 10597 return; 10598 } 10599 10600 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 10601 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) || 10602 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid)) 10603 goto nla_put_failure; 10604 10605 rekey_attr = nla_nest_start(msg, NL80211_ATTR_REKEY_DATA); 10606 if (!rekey_attr) 10607 goto nla_put_failure; 10608 10609 if (nla_put(msg, NL80211_REKEY_DATA_REPLAY_CTR, 10610 NL80211_REPLAY_CTR_LEN, replay_ctr)) 10611 goto nla_put_failure; 10612 10613 nla_nest_end(msg, rekey_attr); 10614 10615 genlmsg_end(msg, hdr); 10616 10617 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0, 10618 nl80211_mlme_mcgrp.id, gfp); 10619 return; 10620 10621 nla_put_failure: 10622 genlmsg_cancel(msg, hdr); 10623 nlmsg_free(msg); 10624 } 10625 10626 void cfg80211_gtk_rekey_notify(struct net_device *dev, const u8 *bssid, 10627 const u8 *replay_ctr, gfp_t gfp) 10628 { 10629 struct wireless_dev *wdev = dev->ieee80211_ptr; 10630 struct wiphy *wiphy = wdev->wiphy; 10631 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); 10632 10633 trace_cfg80211_gtk_rekey_notify(dev, bssid); 10634 nl80211_gtk_rekey_notify(rdev, dev, bssid, replay_ctr, gfp); 10635 } 10636 EXPORT_SYMBOL(cfg80211_gtk_rekey_notify); 10637 10638 static void 10639 nl80211_pmksa_candidate_notify(struct cfg80211_registered_device *rdev, 10640 struct net_device *netdev, int index, 10641 const u8 *bssid, bool preauth, gfp_t gfp) 10642 { 10643 struct sk_buff *msg; 10644 struct nlattr *attr; 10645 void *hdr; 10646 10647 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 10648 if (!msg) 10649 return; 10650 10651 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PMKSA_CANDIDATE); 10652 if (!hdr) { 10653 nlmsg_free(msg); 10654 return; 10655 } 10656 10657 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 10658 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex)) 10659 goto nla_put_failure; 10660 10661 attr = nla_nest_start(msg, NL80211_ATTR_PMKSA_CANDIDATE); 10662 if (!attr) 10663 goto nla_put_failure; 10664 10665 if (nla_put_u32(msg, NL80211_PMKSA_CANDIDATE_INDEX, index) || 10666 nla_put(msg, NL80211_PMKSA_CANDIDATE_BSSID, ETH_ALEN, bssid) || 10667 (preauth && 10668 nla_put_flag(msg, NL80211_PMKSA_CANDIDATE_PREAUTH))) 10669 goto nla_put_failure; 10670 10671 nla_nest_end(msg, attr); 10672 10673 genlmsg_end(msg, hdr); 10674 10675 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0, 10676 nl80211_mlme_mcgrp.id, gfp); 10677 return; 10678 10679 nla_put_failure: 10680 genlmsg_cancel(msg, hdr); 10681 nlmsg_free(msg); 10682 } 10683 10684 void cfg80211_pmksa_candidate_notify(struct net_device *dev, int index, 10685 const u8 *bssid, bool preauth, gfp_t gfp) 10686 { 10687 struct wireless_dev *wdev = dev->ieee80211_ptr; 10688 struct wiphy *wiphy = wdev->wiphy; 10689 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); 10690 10691 trace_cfg80211_pmksa_candidate_notify(dev, index, bssid, preauth); 10692 nl80211_pmksa_candidate_notify(rdev, dev, index, bssid, preauth, gfp); 10693 } 10694 EXPORT_SYMBOL(cfg80211_pmksa_candidate_notify); 10695 10696 static void nl80211_ch_switch_notify(struct cfg80211_registered_device *rdev, 10697 struct net_device *netdev, 10698 struct cfg80211_chan_def *chandef, 10699 gfp_t gfp) 10700 { 10701 struct sk_buff *msg; 10702 void *hdr; 10703 10704 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 10705 if (!msg) 10706 return; 10707 10708 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CH_SWITCH_NOTIFY); 10709 if (!hdr) { 10710 nlmsg_free(msg); 10711 return; 10712 } 10713 10714 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex)) 10715 goto nla_put_failure; 10716 10717 if (nl80211_send_chandef(msg, chandef)) 10718 goto nla_put_failure; 10719 10720 genlmsg_end(msg, hdr); 10721 10722 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0, 10723 nl80211_mlme_mcgrp.id, gfp); 10724 return; 10725 10726 nla_put_failure: 10727 genlmsg_cancel(msg, hdr); 10728 nlmsg_free(msg); 10729 } 10730 10731 void cfg80211_ch_switch_notify(struct net_device *dev, 10732 struct cfg80211_chan_def *chandef) 10733 { 10734 struct wireless_dev *wdev = dev->ieee80211_ptr; 10735 struct wiphy *wiphy = wdev->wiphy; 10736 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); 10737 10738 trace_cfg80211_ch_switch_notify(dev, chandef); 10739 10740 wdev_lock(wdev); 10741 10742 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP && 10743 wdev->iftype != NL80211_IFTYPE_P2P_GO)) 10744 goto out; 10745 10746 wdev->channel = chandef->chan; 10747 nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL); 10748 out: 10749 wdev_unlock(wdev); 10750 return; 10751 } 10752 EXPORT_SYMBOL(cfg80211_ch_switch_notify); 10753 10754 void cfg80211_cqm_txe_notify(struct net_device *dev, 10755 const u8 *peer, u32 num_packets, 10756 u32 rate, u32 intvl, gfp_t gfp) 10757 { 10758 struct wireless_dev *wdev = dev->ieee80211_ptr; 10759 struct wiphy *wiphy = wdev->wiphy; 10760 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); 10761 struct sk_buff *msg; 10762 struct nlattr *pinfoattr; 10763 void *hdr; 10764 10765 msg = nlmsg_new(NLMSG_GOODSIZE, gfp); 10766 if (!msg) 10767 return; 10768 10769 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM); 10770 if (!hdr) { 10771 nlmsg_free(msg); 10772 return; 10773 } 10774 10775 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 10776 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) || 10777 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer)) 10778 goto nla_put_failure; 10779 10780 pinfoattr = nla_nest_start(msg, NL80211_ATTR_CQM); 10781 if (!pinfoattr) 10782 goto nla_put_failure; 10783 10784 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_PKTS, num_packets)) 10785 goto nla_put_failure; 10786 10787 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_RATE, rate)) 10788 goto nla_put_failure; 10789 10790 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_INTVL, intvl)) 10791 goto nla_put_failure; 10792 10793 nla_nest_end(msg, pinfoattr); 10794 10795 genlmsg_end(msg, hdr); 10796 10797 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0, 10798 nl80211_mlme_mcgrp.id, gfp); 10799 return; 10800 10801 nla_put_failure: 10802 genlmsg_cancel(msg, hdr); 10803 nlmsg_free(msg); 10804 } 10805 EXPORT_SYMBOL(cfg80211_cqm_txe_notify); 10806 10807 void 10808 nl80211_radar_notify(struct cfg80211_registered_device *rdev, 10809 struct cfg80211_chan_def *chandef, 10810 enum nl80211_radar_event event, 10811 struct net_device *netdev, gfp_t gfp) 10812 { 10813 struct sk_buff *msg; 10814 void *hdr; 10815 10816 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 10817 if (!msg) 10818 return; 10819 10820 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_RADAR_DETECT); 10821 if (!hdr) { 10822 nlmsg_free(msg); 10823 return; 10824 } 10825 10826 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx)) 10827 goto nla_put_failure; 10828 10829 /* NOP and radar events don't need a netdev parameter */ 10830 if (netdev) { 10831 struct wireless_dev *wdev = netdev->ieee80211_ptr; 10832 10833 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) || 10834 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev))) 10835 goto nla_put_failure; 10836 } 10837 10838 if (nla_put_u32(msg, NL80211_ATTR_RADAR_EVENT, event)) 10839 goto nla_put_failure; 10840 10841 if (nl80211_send_chandef(msg, chandef)) 10842 goto nla_put_failure; 10843 10844 genlmsg_end(msg, hdr); 10845 10846 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0, 10847 nl80211_mlme_mcgrp.id, gfp); 10848 return; 10849 10850 nla_put_failure: 10851 genlmsg_cancel(msg, hdr); 10852 nlmsg_free(msg); 10853 } 10854 10855 void cfg80211_cqm_pktloss_notify(struct net_device *dev, 10856 const u8 *peer, u32 num_packets, gfp_t gfp) 10857 { 10858 struct wireless_dev *wdev = dev->ieee80211_ptr; 10859 struct wiphy *wiphy = wdev->wiphy; 10860 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); 10861 struct sk_buff *msg; 10862 struct nlattr *pinfoattr; 10863 void *hdr; 10864 10865 trace_cfg80211_cqm_pktloss_notify(dev, peer, num_packets); 10866 10867 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 10868 if (!msg) 10869 return; 10870 10871 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM); 10872 if (!hdr) { 10873 nlmsg_free(msg); 10874 return; 10875 } 10876 10877 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 10878 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) || 10879 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer)) 10880 goto nla_put_failure; 10881 10882 pinfoattr = nla_nest_start(msg, NL80211_ATTR_CQM); 10883 if (!pinfoattr) 10884 goto nla_put_failure; 10885 10886 if (nla_put_u32(msg, NL80211_ATTR_CQM_PKT_LOSS_EVENT, num_packets)) 10887 goto nla_put_failure; 10888 10889 nla_nest_end(msg, pinfoattr); 10890 10891 genlmsg_end(msg, hdr); 10892 10893 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0, 10894 nl80211_mlme_mcgrp.id, gfp); 10895 return; 10896 10897 nla_put_failure: 10898 genlmsg_cancel(msg, hdr); 10899 nlmsg_free(msg); 10900 } 10901 EXPORT_SYMBOL(cfg80211_cqm_pktloss_notify); 10902 10903 void cfg80211_probe_status(struct net_device *dev, const u8 *addr, 10904 u64 cookie, bool acked, gfp_t gfp) 10905 { 10906 struct wireless_dev *wdev = dev->ieee80211_ptr; 10907 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy); 10908 struct sk_buff *msg; 10909 void *hdr; 10910 10911 trace_cfg80211_probe_status(dev, addr, cookie, acked); 10912 10913 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 10914 10915 if (!msg) 10916 return; 10917 10918 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PROBE_CLIENT); 10919 if (!hdr) { 10920 nlmsg_free(msg); 10921 return; 10922 } 10923 10924 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 10925 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) || 10926 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) || 10927 nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie) || 10928 (acked && nla_put_flag(msg, NL80211_ATTR_ACK))) 10929 goto nla_put_failure; 10930 10931 genlmsg_end(msg, hdr); 10932 10933 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0, 10934 nl80211_mlme_mcgrp.id, gfp); 10935 return; 10936 10937 nla_put_failure: 10938 genlmsg_cancel(msg, hdr); 10939 nlmsg_free(msg); 10940 } 10941 EXPORT_SYMBOL(cfg80211_probe_status); 10942 10943 void cfg80211_report_obss_beacon(struct wiphy *wiphy, 10944 const u8 *frame, size_t len, 10945 int freq, int sig_dbm) 10946 { 10947 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); 10948 struct sk_buff *msg; 10949 void *hdr; 10950 struct cfg80211_beacon_registration *reg; 10951 10952 trace_cfg80211_report_obss_beacon(wiphy, frame, len, freq, sig_dbm); 10953 10954 spin_lock_bh(&rdev->beacon_registrations_lock); 10955 list_for_each_entry(reg, &rdev->beacon_registrations, list) { 10956 msg = nlmsg_new(len + 100, GFP_ATOMIC); 10957 if (!msg) { 10958 spin_unlock_bh(&rdev->beacon_registrations_lock); 10959 return; 10960 } 10961 10962 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME); 10963 if (!hdr) 10964 goto nla_put_failure; 10965 10966 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 10967 (freq && 10968 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq)) || 10969 (sig_dbm && 10970 nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) || 10971 nla_put(msg, NL80211_ATTR_FRAME, len, frame)) 10972 goto nla_put_failure; 10973 10974 genlmsg_end(msg, hdr); 10975 10976 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, reg->nlportid); 10977 } 10978 spin_unlock_bh(&rdev->beacon_registrations_lock); 10979 return; 10980 10981 nla_put_failure: 10982 spin_unlock_bh(&rdev->beacon_registrations_lock); 10983 if (hdr) 10984 genlmsg_cancel(msg, hdr); 10985 nlmsg_free(msg); 10986 } 10987 EXPORT_SYMBOL(cfg80211_report_obss_beacon); 10988 10989 #ifdef CONFIG_PM 10990 void cfg80211_report_wowlan_wakeup(struct wireless_dev *wdev, 10991 struct cfg80211_wowlan_wakeup *wakeup, 10992 gfp_t gfp) 10993 { 10994 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy); 10995 struct sk_buff *msg; 10996 void *hdr; 10997 int size = 200; 10998 10999 trace_cfg80211_report_wowlan_wakeup(wdev->wiphy, wdev, wakeup); 11000 11001 if (wakeup) 11002 size += wakeup->packet_present_len; 11003 11004 msg = nlmsg_new(size, gfp); 11005 if (!msg) 11006 return; 11007 11008 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_WOWLAN); 11009 if (!hdr) 11010 goto free_msg; 11011 11012 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 11013 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev))) 11014 goto free_msg; 11015 11016 if (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX, 11017 wdev->netdev->ifindex)) 11018 goto free_msg; 11019 11020 if (wakeup) { 11021 struct nlattr *reasons; 11022 11023 reasons = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS); 11024 11025 if (wakeup->disconnect && 11026 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) 11027 goto free_msg; 11028 if (wakeup->magic_pkt && 11029 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) 11030 goto free_msg; 11031 if (wakeup->gtk_rekey_failure && 11032 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) 11033 goto free_msg; 11034 if (wakeup->eap_identity_req && 11035 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) 11036 goto free_msg; 11037 if (wakeup->four_way_handshake && 11038 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) 11039 goto free_msg; 11040 if (wakeup->rfkill_release && 11041 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)) 11042 goto free_msg; 11043 11044 if (wakeup->pattern_idx >= 0 && 11045 nla_put_u32(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN, 11046 wakeup->pattern_idx)) 11047 goto free_msg; 11048 11049 if (wakeup->tcp_match) 11050 nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_MATCH); 11051 11052 if (wakeup->tcp_connlost) 11053 nla_put_flag(msg, 11054 NL80211_WOWLAN_TRIG_WAKEUP_TCP_CONNLOST); 11055 11056 if (wakeup->tcp_nomoretokens) 11057 nla_put_flag(msg, 11058 NL80211_WOWLAN_TRIG_WAKEUP_TCP_NOMORETOKENS); 11059 11060 if (wakeup->packet) { 11061 u32 pkt_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211; 11062 u32 len_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211_LEN; 11063 11064 if (!wakeup->packet_80211) { 11065 pkt_attr = 11066 NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023; 11067 len_attr = 11068 NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023_LEN; 11069 } 11070 11071 if (wakeup->packet_len && 11072 nla_put_u32(msg, len_attr, wakeup->packet_len)) 11073 goto free_msg; 11074 11075 if (nla_put(msg, pkt_attr, wakeup->packet_present_len, 11076 wakeup->packet)) 11077 goto free_msg; 11078 } 11079 11080 nla_nest_end(msg, reasons); 11081 } 11082 11083 genlmsg_end(msg, hdr); 11084 11085 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0, 11086 nl80211_mlme_mcgrp.id, gfp); 11087 return; 11088 11089 free_msg: 11090 nlmsg_free(msg); 11091 } 11092 EXPORT_SYMBOL(cfg80211_report_wowlan_wakeup); 11093 #endif 11094 11095 void cfg80211_tdls_oper_request(struct net_device *dev, const u8 *peer, 11096 enum nl80211_tdls_operation oper, 11097 u16 reason_code, gfp_t gfp) 11098 { 11099 struct wireless_dev *wdev = dev->ieee80211_ptr; 11100 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy); 11101 struct sk_buff *msg; 11102 void *hdr; 11103 11104 trace_cfg80211_tdls_oper_request(wdev->wiphy, dev, peer, oper, 11105 reason_code); 11106 11107 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 11108 if (!msg) 11109 return; 11110 11111 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_TDLS_OPER); 11112 if (!hdr) { 11113 nlmsg_free(msg); 11114 return; 11115 } 11116 11117 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 11118 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) || 11119 nla_put_u8(msg, NL80211_ATTR_TDLS_OPERATION, oper) || 11120 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer) || 11121 (reason_code > 0 && 11122 nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason_code))) 11123 goto nla_put_failure; 11124 11125 genlmsg_end(msg, hdr); 11126 11127 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0, 11128 nl80211_mlme_mcgrp.id, gfp); 11129 return; 11130 11131 nla_put_failure: 11132 genlmsg_cancel(msg, hdr); 11133 nlmsg_free(msg); 11134 } 11135 EXPORT_SYMBOL(cfg80211_tdls_oper_request); 11136 11137 static int nl80211_netlink_notify(struct notifier_block * nb, 11138 unsigned long state, 11139 void *_notify) 11140 { 11141 struct netlink_notify *notify = _notify; 11142 struct cfg80211_registered_device *rdev; 11143 struct wireless_dev *wdev; 11144 struct cfg80211_beacon_registration *reg, *tmp; 11145 11146 if (state != NETLINK_URELEASE) 11147 return NOTIFY_DONE; 11148 11149 rcu_read_lock(); 11150 11151 list_for_each_entry_rcu(rdev, &cfg80211_rdev_list, list) { 11152 list_for_each_entry_rcu(wdev, &rdev->wdev_list, list) 11153 cfg80211_mlme_unregister_socket(wdev, notify->portid); 11154 11155 spin_lock_bh(&rdev->beacon_registrations_lock); 11156 list_for_each_entry_safe(reg, tmp, &rdev->beacon_registrations, 11157 list) { 11158 if (reg->nlportid == notify->portid) { 11159 list_del(®->list); 11160 kfree(reg); 11161 break; 11162 } 11163 } 11164 spin_unlock_bh(&rdev->beacon_registrations_lock); 11165 } 11166 11167 rcu_read_unlock(); 11168 11169 return NOTIFY_DONE; 11170 } 11171 11172 static struct notifier_block nl80211_netlink_notifier = { 11173 .notifier_call = nl80211_netlink_notify, 11174 }; 11175 11176 void cfg80211_ft_event(struct net_device *netdev, 11177 struct cfg80211_ft_event_params *ft_event) 11178 { 11179 struct wiphy *wiphy = netdev->ieee80211_ptr->wiphy; 11180 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); 11181 struct sk_buff *msg; 11182 void *hdr; 11183 11184 trace_cfg80211_ft_event(wiphy, netdev, ft_event); 11185 11186 if (!ft_event->target_ap) 11187 return; 11188 11189 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 11190 if (!msg) 11191 return; 11192 11193 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FT_EVENT); 11194 if (!hdr) { 11195 nlmsg_free(msg); 11196 return; 11197 } 11198 11199 nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx); 11200 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex); 11201 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, ft_event->target_ap); 11202 if (ft_event->ies) 11203 nla_put(msg, NL80211_ATTR_IE, ft_event->ies_len, ft_event->ies); 11204 if (ft_event->ric_ies) 11205 nla_put(msg, NL80211_ATTR_IE_RIC, ft_event->ric_ies_len, 11206 ft_event->ric_ies); 11207 11208 genlmsg_end(msg, hdr); 11209 11210 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0, 11211 nl80211_mlme_mcgrp.id, GFP_KERNEL); 11212 } 11213 EXPORT_SYMBOL(cfg80211_ft_event); 11214 11215 void cfg80211_crit_proto_stopped(struct wireless_dev *wdev, gfp_t gfp) 11216 { 11217 struct cfg80211_registered_device *rdev; 11218 struct sk_buff *msg; 11219 void *hdr; 11220 u32 nlportid; 11221 11222 rdev = wiphy_to_dev(wdev->wiphy); 11223 if (!rdev->crit_proto_nlportid) 11224 return; 11225 11226 nlportid = rdev->crit_proto_nlportid; 11227 rdev->crit_proto_nlportid = 0; 11228 11229 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 11230 if (!msg) 11231 return; 11232 11233 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CRIT_PROTOCOL_STOP); 11234 if (!hdr) 11235 goto nla_put_failure; 11236 11237 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 11238 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev))) 11239 goto nla_put_failure; 11240 11241 genlmsg_end(msg, hdr); 11242 11243 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid); 11244 return; 11245 11246 nla_put_failure: 11247 if (hdr) 11248 genlmsg_cancel(msg, hdr); 11249 nlmsg_free(msg); 11250 11251 } 11252 EXPORT_SYMBOL(cfg80211_crit_proto_stopped); 11253 11254 /* initialisation/exit functions */ 11255 11256 int nl80211_init(void) 11257 { 11258 int err; 11259 11260 err = genl_register_family_with_ops(&nl80211_fam, 11261 nl80211_ops, ARRAY_SIZE(nl80211_ops)); 11262 if (err) 11263 return err; 11264 11265 err = genl_register_mc_group(&nl80211_fam, &nl80211_config_mcgrp); 11266 if (err) 11267 goto err_out; 11268 11269 err = genl_register_mc_group(&nl80211_fam, &nl80211_scan_mcgrp); 11270 if (err) 11271 goto err_out; 11272 11273 err = genl_register_mc_group(&nl80211_fam, &nl80211_regulatory_mcgrp); 11274 if (err) 11275 goto err_out; 11276 11277 err = genl_register_mc_group(&nl80211_fam, &nl80211_mlme_mcgrp); 11278 if (err) 11279 goto err_out; 11280 11281 #ifdef CONFIG_NL80211_TESTMODE 11282 err = genl_register_mc_group(&nl80211_fam, &nl80211_testmode_mcgrp); 11283 if (err) 11284 goto err_out; 11285 #endif 11286 11287 err = netlink_register_notifier(&nl80211_netlink_notifier); 11288 if (err) 11289 goto err_out; 11290 11291 return 0; 11292 err_out: 11293 genl_unregister_family(&nl80211_fam); 11294 return err; 11295 } 11296 11297 void nl80211_exit(void) 11298 { 11299 netlink_unregister_notifier(&nl80211_netlink_notifier); 11300 genl_unregister_family(&nl80211_fam); 11301 } 11302