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(const struct genl_ops *ops, struct sk_buff *skb, 34 struct genl_info *info); 35 static void nl80211_post_doit(const 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 /* multicast groups */ 51 enum nl80211_multicast_groups { 52 NL80211_MCGRP_CONFIG, 53 NL80211_MCGRP_SCAN, 54 NL80211_MCGRP_REGULATORY, 55 NL80211_MCGRP_MLME, 56 NL80211_MCGRP_TESTMODE /* keep last - ifdef! */ 57 }; 58 59 static const struct genl_multicast_group nl80211_mcgrps[] = { 60 [NL80211_MCGRP_CONFIG] = { .name = "config", }, 61 [NL80211_MCGRP_SCAN] = { .name = "scan", }, 62 [NL80211_MCGRP_REGULATORY] = { .name = "regulatory", }, 63 [NL80211_MCGRP_MLME] = { .name = "mlme", }, 64 #ifdef CONFIG_NL80211_TESTMODE 65 [NL80211_MCGRP_TESTMODE] = { .name = "testmode", } 66 #endif 67 }; 68 69 /* returns ERR_PTR values */ 70 static struct wireless_dev * 71 __cfg80211_wdev_from_attrs(struct net *netns, struct nlattr **attrs) 72 { 73 struct cfg80211_registered_device *rdev; 74 struct wireless_dev *result = NULL; 75 bool have_ifidx = attrs[NL80211_ATTR_IFINDEX]; 76 bool have_wdev_id = attrs[NL80211_ATTR_WDEV]; 77 u64 wdev_id; 78 int wiphy_idx = -1; 79 int ifidx = -1; 80 81 ASSERT_RTNL(); 82 83 if (!have_ifidx && !have_wdev_id) 84 return ERR_PTR(-EINVAL); 85 86 if (have_ifidx) 87 ifidx = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]); 88 if (have_wdev_id) { 89 wdev_id = nla_get_u64(attrs[NL80211_ATTR_WDEV]); 90 wiphy_idx = wdev_id >> 32; 91 } 92 93 list_for_each_entry(rdev, &cfg80211_rdev_list, list) { 94 struct wireless_dev *wdev; 95 96 if (wiphy_net(&rdev->wiphy) != netns) 97 continue; 98 99 if (have_wdev_id && rdev->wiphy_idx != wiphy_idx) 100 continue; 101 102 list_for_each_entry(wdev, &rdev->wdev_list, list) { 103 if (have_ifidx && wdev->netdev && 104 wdev->netdev->ifindex == ifidx) { 105 result = wdev; 106 break; 107 } 108 if (have_wdev_id && wdev->identifier == (u32)wdev_id) { 109 result = wdev; 110 break; 111 } 112 } 113 114 if (result) 115 break; 116 } 117 118 if (result) 119 return result; 120 return ERR_PTR(-ENODEV); 121 } 122 123 static struct cfg80211_registered_device * 124 __cfg80211_rdev_from_attrs(struct net *netns, struct nlattr **attrs) 125 { 126 struct cfg80211_registered_device *rdev = NULL, *tmp; 127 struct net_device *netdev; 128 129 ASSERT_RTNL(); 130 131 if (!attrs[NL80211_ATTR_WIPHY] && 132 !attrs[NL80211_ATTR_IFINDEX] && 133 !attrs[NL80211_ATTR_WDEV]) 134 return ERR_PTR(-EINVAL); 135 136 if (attrs[NL80211_ATTR_WIPHY]) 137 rdev = cfg80211_rdev_by_wiphy_idx( 138 nla_get_u32(attrs[NL80211_ATTR_WIPHY])); 139 140 if (attrs[NL80211_ATTR_WDEV]) { 141 u64 wdev_id = nla_get_u64(attrs[NL80211_ATTR_WDEV]); 142 struct wireless_dev *wdev; 143 bool found = false; 144 145 tmp = cfg80211_rdev_by_wiphy_idx(wdev_id >> 32); 146 if (tmp) { 147 /* make sure wdev exists */ 148 list_for_each_entry(wdev, &tmp->wdev_list, list) { 149 if (wdev->identifier != (u32)wdev_id) 150 continue; 151 found = true; 152 break; 153 } 154 155 if (!found) 156 tmp = NULL; 157 158 if (rdev && tmp != rdev) 159 return ERR_PTR(-EINVAL); 160 rdev = tmp; 161 } 162 } 163 164 if (attrs[NL80211_ATTR_IFINDEX]) { 165 int ifindex = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]); 166 netdev = dev_get_by_index(netns, ifindex); 167 if (netdev) { 168 if (netdev->ieee80211_ptr) 169 tmp = wiphy_to_dev( 170 netdev->ieee80211_ptr->wiphy); 171 else 172 tmp = NULL; 173 174 dev_put(netdev); 175 176 /* not wireless device -- return error */ 177 if (!tmp) 178 return ERR_PTR(-EINVAL); 179 180 /* mismatch -- return error */ 181 if (rdev && tmp != rdev) 182 return ERR_PTR(-EINVAL); 183 184 rdev = tmp; 185 } 186 } 187 188 if (!rdev) 189 return ERR_PTR(-ENODEV); 190 191 if (netns != wiphy_net(&rdev->wiphy)) 192 return ERR_PTR(-ENODEV); 193 194 return rdev; 195 } 196 197 /* 198 * This function returns a pointer to the driver 199 * that the genl_info item that is passed refers to. 200 * 201 * The result of this can be a PTR_ERR and hence must 202 * be checked with IS_ERR() for errors. 203 */ 204 static struct cfg80211_registered_device * 205 cfg80211_get_dev_from_info(struct net *netns, struct genl_info *info) 206 { 207 return __cfg80211_rdev_from_attrs(netns, info->attrs); 208 } 209 210 /* policy for the attributes */ 211 static const struct nla_policy nl80211_policy[NL80211_ATTR_MAX+1] = { 212 [NL80211_ATTR_WIPHY] = { .type = NLA_U32 }, 213 [NL80211_ATTR_WIPHY_NAME] = { .type = NLA_NUL_STRING, 214 .len = 20-1 }, 215 [NL80211_ATTR_WIPHY_TXQ_PARAMS] = { .type = NLA_NESTED }, 216 217 [NL80211_ATTR_WIPHY_FREQ] = { .type = NLA_U32 }, 218 [NL80211_ATTR_WIPHY_CHANNEL_TYPE] = { .type = NLA_U32 }, 219 [NL80211_ATTR_CHANNEL_WIDTH] = { .type = NLA_U32 }, 220 [NL80211_ATTR_CENTER_FREQ1] = { .type = NLA_U32 }, 221 [NL80211_ATTR_CENTER_FREQ2] = { .type = NLA_U32 }, 222 223 [NL80211_ATTR_WIPHY_RETRY_SHORT] = { .type = NLA_U8 }, 224 [NL80211_ATTR_WIPHY_RETRY_LONG] = { .type = NLA_U8 }, 225 [NL80211_ATTR_WIPHY_FRAG_THRESHOLD] = { .type = NLA_U32 }, 226 [NL80211_ATTR_WIPHY_RTS_THRESHOLD] = { .type = NLA_U32 }, 227 [NL80211_ATTR_WIPHY_COVERAGE_CLASS] = { .type = NLA_U8 }, 228 229 [NL80211_ATTR_IFTYPE] = { .type = NLA_U32 }, 230 [NL80211_ATTR_IFINDEX] = { .type = NLA_U32 }, 231 [NL80211_ATTR_IFNAME] = { .type = NLA_NUL_STRING, .len = IFNAMSIZ-1 }, 232 233 [NL80211_ATTR_MAC] = { .len = ETH_ALEN }, 234 [NL80211_ATTR_PREV_BSSID] = { .len = ETH_ALEN }, 235 236 [NL80211_ATTR_KEY] = { .type = NLA_NESTED, }, 237 [NL80211_ATTR_KEY_DATA] = { .type = NLA_BINARY, 238 .len = WLAN_MAX_KEY_LEN }, 239 [NL80211_ATTR_KEY_IDX] = { .type = NLA_U8 }, 240 [NL80211_ATTR_KEY_CIPHER] = { .type = NLA_U32 }, 241 [NL80211_ATTR_KEY_DEFAULT] = { .type = NLA_FLAG }, 242 [NL80211_ATTR_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 }, 243 [NL80211_ATTR_KEY_TYPE] = { .type = NLA_U32 }, 244 245 [NL80211_ATTR_BEACON_INTERVAL] = { .type = NLA_U32 }, 246 [NL80211_ATTR_DTIM_PERIOD] = { .type = NLA_U32 }, 247 [NL80211_ATTR_BEACON_HEAD] = { .type = NLA_BINARY, 248 .len = IEEE80211_MAX_DATA_LEN }, 249 [NL80211_ATTR_BEACON_TAIL] = { .type = NLA_BINARY, 250 .len = IEEE80211_MAX_DATA_LEN }, 251 [NL80211_ATTR_STA_AID] = { .type = NLA_U16 }, 252 [NL80211_ATTR_STA_FLAGS] = { .type = NLA_NESTED }, 253 [NL80211_ATTR_STA_LISTEN_INTERVAL] = { .type = NLA_U16 }, 254 [NL80211_ATTR_STA_SUPPORTED_RATES] = { .type = NLA_BINARY, 255 .len = NL80211_MAX_SUPP_RATES }, 256 [NL80211_ATTR_STA_PLINK_ACTION] = { .type = NLA_U8 }, 257 [NL80211_ATTR_STA_VLAN] = { .type = NLA_U32 }, 258 [NL80211_ATTR_MNTR_FLAGS] = { /* NLA_NESTED can't be empty */ }, 259 [NL80211_ATTR_MESH_ID] = { .type = NLA_BINARY, 260 .len = IEEE80211_MAX_MESH_ID_LEN }, 261 [NL80211_ATTR_MPATH_NEXT_HOP] = { .type = NLA_U32 }, 262 263 [NL80211_ATTR_REG_ALPHA2] = { .type = NLA_STRING, .len = 2 }, 264 [NL80211_ATTR_REG_RULES] = { .type = NLA_NESTED }, 265 266 [NL80211_ATTR_BSS_CTS_PROT] = { .type = NLA_U8 }, 267 [NL80211_ATTR_BSS_SHORT_PREAMBLE] = { .type = NLA_U8 }, 268 [NL80211_ATTR_BSS_SHORT_SLOT_TIME] = { .type = NLA_U8 }, 269 [NL80211_ATTR_BSS_BASIC_RATES] = { .type = NLA_BINARY, 270 .len = NL80211_MAX_SUPP_RATES }, 271 [NL80211_ATTR_BSS_HT_OPMODE] = { .type = NLA_U16 }, 272 273 [NL80211_ATTR_MESH_CONFIG] = { .type = NLA_NESTED }, 274 [NL80211_ATTR_SUPPORT_MESH_AUTH] = { .type = NLA_FLAG }, 275 276 [NL80211_ATTR_HT_CAPABILITY] = { .len = NL80211_HT_CAPABILITY_LEN }, 277 278 [NL80211_ATTR_MGMT_SUBTYPE] = { .type = NLA_U8 }, 279 [NL80211_ATTR_IE] = { .type = NLA_BINARY, 280 .len = IEEE80211_MAX_DATA_LEN }, 281 [NL80211_ATTR_SCAN_FREQUENCIES] = { .type = NLA_NESTED }, 282 [NL80211_ATTR_SCAN_SSIDS] = { .type = NLA_NESTED }, 283 284 [NL80211_ATTR_SSID] = { .type = NLA_BINARY, 285 .len = IEEE80211_MAX_SSID_LEN }, 286 [NL80211_ATTR_AUTH_TYPE] = { .type = NLA_U32 }, 287 [NL80211_ATTR_REASON_CODE] = { .type = NLA_U16 }, 288 [NL80211_ATTR_FREQ_FIXED] = { .type = NLA_FLAG }, 289 [NL80211_ATTR_TIMED_OUT] = { .type = NLA_FLAG }, 290 [NL80211_ATTR_USE_MFP] = { .type = NLA_U32 }, 291 [NL80211_ATTR_STA_FLAGS2] = { 292 .len = sizeof(struct nl80211_sta_flag_update), 293 }, 294 [NL80211_ATTR_CONTROL_PORT] = { .type = NLA_FLAG }, 295 [NL80211_ATTR_CONTROL_PORT_ETHERTYPE] = { .type = NLA_U16 }, 296 [NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT] = { .type = NLA_FLAG }, 297 [NL80211_ATTR_PRIVACY] = { .type = NLA_FLAG }, 298 [NL80211_ATTR_CIPHER_SUITE_GROUP] = { .type = NLA_U32 }, 299 [NL80211_ATTR_WPA_VERSIONS] = { .type = NLA_U32 }, 300 [NL80211_ATTR_PID] = { .type = NLA_U32 }, 301 [NL80211_ATTR_4ADDR] = { .type = NLA_U8 }, 302 [NL80211_ATTR_PMKID] = { .type = NLA_BINARY, 303 .len = WLAN_PMKID_LEN }, 304 [NL80211_ATTR_DURATION] = { .type = NLA_U32 }, 305 [NL80211_ATTR_COOKIE] = { .type = NLA_U64 }, 306 [NL80211_ATTR_TX_RATES] = { .type = NLA_NESTED }, 307 [NL80211_ATTR_FRAME] = { .type = NLA_BINARY, 308 .len = IEEE80211_MAX_DATA_LEN }, 309 [NL80211_ATTR_FRAME_MATCH] = { .type = NLA_BINARY, }, 310 [NL80211_ATTR_PS_STATE] = { .type = NLA_U32 }, 311 [NL80211_ATTR_CQM] = { .type = NLA_NESTED, }, 312 [NL80211_ATTR_LOCAL_STATE_CHANGE] = { .type = NLA_FLAG }, 313 [NL80211_ATTR_AP_ISOLATE] = { .type = NLA_U8 }, 314 [NL80211_ATTR_WIPHY_TX_POWER_SETTING] = { .type = NLA_U32 }, 315 [NL80211_ATTR_WIPHY_TX_POWER_LEVEL] = { .type = NLA_U32 }, 316 [NL80211_ATTR_FRAME_TYPE] = { .type = NLA_U16 }, 317 [NL80211_ATTR_WIPHY_ANTENNA_TX] = { .type = NLA_U32 }, 318 [NL80211_ATTR_WIPHY_ANTENNA_RX] = { .type = NLA_U32 }, 319 [NL80211_ATTR_MCAST_RATE] = { .type = NLA_U32 }, 320 [NL80211_ATTR_OFFCHANNEL_TX_OK] = { .type = NLA_FLAG }, 321 [NL80211_ATTR_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED }, 322 [NL80211_ATTR_WOWLAN_TRIGGERS] = { .type = NLA_NESTED }, 323 [NL80211_ATTR_STA_PLINK_STATE] = { .type = NLA_U8 }, 324 [NL80211_ATTR_SCHED_SCAN_INTERVAL] = { .type = NLA_U32 }, 325 [NL80211_ATTR_REKEY_DATA] = { .type = NLA_NESTED }, 326 [NL80211_ATTR_SCAN_SUPP_RATES] = { .type = NLA_NESTED }, 327 [NL80211_ATTR_HIDDEN_SSID] = { .type = NLA_U32 }, 328 [NL80211_ATTR_IE_PROBE_RESP] = { .type = NLA_BINARY, 329 .len = IEEE80211_MAX_DATA_LEN }, 330 [NL80211_ATTR_IE_ASSOC_RESP] = { .type = NLA_BINARY, 331 .len = IEEE80211_MAX_DATA_LEN }, 332 [NL80211_ATTR_ROAM_SUPPORT] = { .type = NLA_FLAG }, 333 [NL80211_ATTR_SCHED_SCAN_MATCH] = { .type = NLA_NESTED }, 334 [NL80211_ATTR_TX_NO_CCK_RATE] = { .type = NLA_FLAG }, 335 [NL80211_ATTR_TDLS_ACTION] = { .type = NLA_U8 }, 336 [NL80211_ATTR_TDLS_DIALOG_TOKEN] = { .type = NLA_U8 }, 337 [NL80211_ATTR_TDLS_OPERATION] = { .type = NLA_U8 }, 338 [NL80211_ATTR_TDLS_SUPPORT] = { .type = NLA_FLAG }, 339 [NL80211_ATTR_TDLS_EXTERNAL_SETUP] = { .type = NLA_FLAG }, 340 [NL80211_ATTR_DONT_WAIT_FOR_ACK] = { .type = NLA_FLAG }, 341 [NL80211_ATTR_PROBE_RESP] = { .type = NLA_BINARY, 342 .len = IEEE80211_MAX_DATA_LEN }, 343 [NL80211_ATTR_DFS_REGION] = { .type = NLA_U8 }, 344 [NL80211_ATTR_DISABLE_HT] = { .type = NLA_FLAG }, 345 [NL80211_ATTR_HT_CAPABILITY_MASK] = { 346 .len = NL80211_HT_CAPABILITY_LEN 347 }, 348 [NL80211_ATTR_NOACK_MAP] = { .type = NLA_U16 }, 349 [NL80211_ATTR_INACTIVITY_TIMEOUT] = { .type = NLA_U16 }, 350 [NL80211_ATTR_BG_SCAN_PERIOD] = { .type = NLA_U16 }, 351 [NL80211_ATTR_WDEV] = { .type = NLA_U64 }, 352 [NL80211_ATTR_USER_REG_HINT_TYPE] = { .type = NLA_U32 }, 353 [NL80211_ATTR_SAE_DATA] = { .type = NLA_BINARY, }, 354 [NL80211_ATTR_VHT_CAPABILITY] = { .len = NL80211_VHT_CAPABILITY_LEN }, 355 [NL80211_ATTR_SCAN_FLAGS] = { .type = NLA_U32 }, 356 [NL80211_ATTR_P2P_CTWINDOW] = { .type = NLA_U8 }, 357 [NL80211_ATTR_P2P_OPPPS] = { .type = NLA_U8 }, 358 [NL80211_ATTR_ACL_POLICY] = {. type = NLA_U32 }, 359 [NL80211_ATTR_MAC_ADDRS] = { .type = NLA_NESTED }, 360 [NL80211_ATTR_STA_CAPABILITY] = { .type = NLA_U16 }, 361 [NL80211_ATTR_STA_EXT_CAPABILITY] = { .type = NLA_BINARY, }, 362 [NL80211_ATTR_SPLIT_WIPHY_DUMP] = { .type = NLA_FLAG, }, 363 [NL80211_ATTR_DISABLE_VHT] = { .type = NLA_FLAG }, 364 [NL80211_ATTR_VHT_CAPABILITY_MASK] = { 365 .len = NL80211_VHT_CAPABILITY_LEN, 366 }, 367 [NL80211_ATTR_MDID] = { .type = NLA_U16 }, 368 [NL80211_ATTR_IE_RIC] = { .type = NLA_BINARY, 369 .len = IEEE80211_MAX_DATA_LEN }, 370 [NL80211_ATTR_PEER_AID] = { .type = NLA_U16 }, 371 [NL80211_ATTR_CH_SWITCH_COUNT] = { .type = NLA_U32 }, 372 [NL80211_ATTR_CH_SWITCH_BLOCK_TX] = { .type = NLA_FLAG }, 373 [NL80211_ATTR_CSA_IES] = { .type = NLA_NESTED }, 374 [NL80211_ATTR_CSA_C_OFF_BEACON] = { .type = NLA_U16 }, 375 [NL80211_ATTR_CSA_C_OFF_PRESP] = { .type = NLA_U16 }, 376 [NL80211_ATTR_STA_SUPPORTED_CHANNELS] = { .type = NLA_BINARY }, 377 [NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES] = { .type = NLA_BINARY }, 378 [NL80211_ATTR_HANDLE_DFS] = { .type = NLA_FLAG }, 379 }; 380 381 /* policy for the key attributes */ 382 static const struct nla_policy nl80211_key_policy[NL80211_KEY_MAX + 1] = { 383 [NL80211_KEY_DATA] = { .type = NLA_BINARY, .len = WLAN_MAX_KEY_LEN }, 384 [NL80211_KEY_IDX] = { .type = NLA_U8 }, 385 [NL80211_KEY_CIPHER] = { .type = NLA_U32 }, 386 [NL80211_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 }, 387 [NL80211_KEY_DEFAULT] = { .type = NLA_FLAG }, 388 [NL80211_KEY_DEFAULT_MGMT] = { .type = NLA_FLAG }, 389 [NL80211_KEY_TYPE] = { .type = NLA_U32 }, 390 [NL80211_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED }, 391 }; 392 393 /* policy for the key default flags */ 394 static const struct nla_policy 395 nl80211_key_default_policy[NUM_NL80211_KEY_DEFAULT_TYPES] = { 396 [NL80211_KEY_DEFAULT_TYPE_UNICAST] = { .type = NLA_FLAG }, 397 [NL80211_KEY_DEFAULT_TYPE_MULTICAST] = { .type = NLA_FLAG }, 398 }; 399 400 /* policy for WoWLAN attributes */ 401 static const struct nla_policy 402 nl80211_wowlan_policy[NUM_NL80211_WOWLAN_TRIG] = { 403 [NL80211_WOWLAN_TRIG_ANY] = { .type = NLA_FLAG }, 404 [NL80211_WOWLAN_TRIG_DISCONNECT] = { .type = NLA_FLAG }, 405 [NL80211_WOWLAN_TRIG_MAGIC_PKT] = { .type = NLA_FLAG }, 406 [NL80211_WOWLAN_TRIG_PKT_PATTERN] = { .type = NLA_NESTED }, 407 [NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE] = { .type = NLA_FLAG }, 408 [NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST] = { .type = NLA_FLAG }, 409 [NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE] = { .type = NLA_FLAG }, 410 [NL80211_WOWLAN_TRIG_RFKILL_RELEASE] = { .type = NLA_FLAG }, 411 [NL80211_WOWLAN_TRIG_TCP_CONNECTION] = { .type = NLA_NESTED }, 412 }; 413 414 static const struct nla_policy 415 nl80211_wowlan_tcp_policy[NUM_NL80211_WOWLAN_TCP] = { 416 [NL80211_WOWLAN_TCP_SRC_IPV4] = { .type = NLA_U32 }, 417 [NL80211_WOWLAN_TCP_DST_IPV4] = { .type = NLA_U32 }, 418 [NL80211_WOWLAN_TCP_DST_MAC] = { .len = ETH_ALEN }, 419 [NL80211_WOWLAN_TCP_SRC_PORT] = { .type = NLA_U16 }, 420 [NL80211_WOWLAN_TCP_DST_PORT] = { .type = NLA_U16 }, 421 [NL80211_WOWLAN_TCP_DATA_PAYLOAD] = { .len = 1 }, 422 [NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ] = { 423 .len = sizeof(struct nl80211_wowlan_tcp_data_seq) 424 }, 425 [NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN] = { 426 .len = sizeof(struct nl80211_wowlan_tcp_data_token) 427 }, 428 [NL80211_WOWLAN_TCP_DATA_INTERVAL] = { .type = NLA_U32 }, 429 [NL80211_WOWLAN_TCP_WAKE_PAYLOAD] = { .len = 1 }, 430 [NL80211_WOWLAN_TCP_WAKE_MASK] = { .len = 1 }, 431 }; 432 433 /* policy for coalesce rule attributes */ 434 static const struct nla_policy 435 nl80211_coalesce_policy[NUM_NL80211_ATTR_COALESCE_RULE] = { 436 [NL80211_ATTR_COALESCE_RULE_DELAY] = { .type = NLA_U32 }, 437 [NL80211_ATTR_COALESCE_RULE_CONDITION] = { .type = NLA_U32 }, 438 [NL80211_ATTR_COALESCE_RULE_PKT_PATTERN] = { .type = NLA_NESTED }, 439 }; 440 441 /* policy for GTK rekey offload attributes */ 442 static const struct nla_policy 443 nl80211_rekey_policy[NUM_NL80211_REKEY_DATA] = { 444 [NL80211_REKEY_DATA_KEK] = { .len = NL80211_KEK_LEN }, 445 [NL80211_REKEY_DATA_KCK] = { .len = NL80211_KCK_LEN }, 446 [NL80211_REKEY_DATA_REPLAY_CTR] = { .len = NL80211_REPLAY_CTR_LEN }, 447 }; 448 449 static const struct nla_policy 450 nl80211_match_policy[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1] = { 451 [NL80211_SCHED_SCAN_MATCH_ATTR_SSID] = { .type = NLA_BINARY, 452 .len = IEEE80211_MAX_SSID_LEN }, 453 [NL80211_SCHED_SCAN_MATCH_ATTR_RSSI] = { .type = NLA_U32 }, 454 }; 455 456 static int nl80211_prepare_wdev_dump(struct sk_buff *skb, 457 struct netlink_callback *cb, 458 struct cfg80211_registered_device **rdev, 459 struct wireless_dev **wdev) 460 { 461 int err; 462 463 rtnl_lock(); 464 465 if (!cb->args[0]) { 466 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize, 467 nl80211_fam.attrbuf, nl80211_fam.maxattr, 468 nl80211_policy); 469 if (err) 470 goto out_unlock; 471 472 *wdev = __cfg80211_wdev_from_attrs(sock_net(skb->sk), 473 nl80211_fam.attrbuf); 474 if (IS_ERR(*wdev)) { 475 err = PTR_ERR(*wdev); 476 goto out_unlock; 477 } 478 *rdev = wiphy_to_dev((*wdev)->wiphy); 479 /* 0 is the first index - add 1 to parse only once */ 480 cb->args[0] = (*rdev)->wiphy_idx + 1; 481 cb->args[1] = (*wdev)->identifier; 482 } else { 483 /* subtract the 1 again here */ 484 struct wiphy *wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1); 485 struct wireless_dev *tmp; 486 487 if (!wiphy) { 488 err = -ENODEV; 489 goto out_unlock; 490 } 491 *rdev = wiphy_to_dev(wiphy); 492 *wdev = NULL; 493 494 list_for_each_entry(tmp, &(*rdev)->wdev_list, list) { 495 if (tmp->identifier == cb->args[1]) { 496 *wdev = tmp; 497 break; 498 } 499 } 500 501 if (!*wdev) { 502 err = -ENODEV; 503 goto out_unlock; 504 } 505 } 506 507 return 0; 508 out_unlock: 509 rtnl_unlock(); 510 return err; 511 } 512 513 static void nl80211_finish_wdev_dump(struct cfg80211_registered_device *rdev) 514 { 515 rtnl_unlock(); 516 } 517 518 /* IE validation */ 519 static bool is_valid_ie_attr(const struct nlattr *attr) 520 { 521 const u8 *pos; 522 int len; 523 524 if (!attr) 525 return true; 526 527 pos = nla_data(attr); 528 len = nla_len(attr); 529 530 while (len) { 531 u8 elemlen; 532 533 if (len < 2) 534 return false; 535 len -= 2; 536 537 elemlen = pos[1]; 538 if (elemlen > len) 539 return false; 540 541 len -= elemlen; 542 pos += 2 + elemlen; 543 } 544 545 return true; 546 } 547 548 /* message building helper */ 549 static inline void *nl80211hdr_put(struct sk_buff *skb, u32 portid, u32 seq, 550 int flags, u8 cmd) 551 { 552 /* since there is no private header just add the generic one */ 553 return genlmsg_put(skb, portid, seq, &nl80211_fam, flags, cmd); 554 } 555 556 static int nl80211_msg_put_channel(struct sk_buff *msg, 557 struct ieee80211_channel *chan, 558 bool large) 559 { 560 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_FREQ, 561 chan->center_freq)) 562 goto nla_put_failure; 563 564 if ((chan->flags & IEEE80211_CHAN_DISABLED) && 565 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_DISABLED)) 566 goto nla_put_failure; 567 if ((chan->flags & IEEE80211_CHAN_PASSIVE_SCAN) && 568 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_PASSIVE_SCAN)) 569 goto nla_put_failure; 570 if ((chan->flags & IEEE80211_CHAN_NO_IBSS) && 571 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_IBSS)) 572 goto nla_put_failure; 573 if (chan->flags & IEEE80211_CHAN_RADAR) { 574 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_RADAR)) 575 goto nla_put_failure; 576 if (large) { 577 u32 time; 578 579 time = elapsed_jiffies_msecs(chan->dfs_state_entered); 580 581 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_STATE, 582 chan->dfs_state)) 583 goto nla_put_failure; 584 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_TIME, 585 time)) 586 goto nla_put_failure; 587 } 588 } 589 590 if (large) { 591 if ((chan->flags & IEEE80211_CHAN_NO_HT40MINUS) && 592 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_MINUS)) 593 goto nla_put_failure; 594 if ((chan->flags & IEEE80211_CHAN_NO_HT40PLUS) && 595 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_PLUS)) 596 goto nla_put_failure; 597 if ((chan->flags & IEEE80211_CHAN_NO_80MHZ) && 598 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_80MHZ)) 599 goto nla_put_failure; 600 if ((chan->flags & IEEE80211_CHAN_NO_160MHZ) && 601 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_160MHZ)) 602 goto nla_put_failure; 603 } 604 605 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_MAX_TX_POWER, 606 DBM_TO_MBM(chan->max_power))) 607 goto nla_put_failure; 608 609 return 0; 610 611 nla_put_failure: 612 return -ENOBUFS; 613 } 614 615 /* netlink command implementations */ 616 617 struct key_parse { 618 struct key_params p; 619 int idx; 620 int type; 621 bool def, defmgmt; 622 bool def_uni, def_multi; 623 }; 624 625 static int nl80211_parse_key_new(struct nlattr *key, struct key_parse *k) 626 { 627 struct nlattr *tb[NL80211_KEY_MAX + 1]; 628 int err = nla_parse_nested(tb, NL80211_KEY_MAX, key, 629 nl80211_key_policy); 630 if (err) 631 return err; 632 633 k->def = !!tb[NL80211_KEY_DEFAULT]; 634 k->defmgmt = !!tb[NL80211_KEY_DEFAULT_MGMT]; 635 636 if (k->def) { 637 k->def_uni = true; 638 k->def_multi = true; 639 } 640 if (k->defmgmt) 641 k->def_multi = true; 642 643 if (tb[NL80211_KEY_IDX]) 644 k->idx = nla_get_u8(tb[NL80211_KEY_IDX]); 645 646 if (tb[NL80211_KEY_DATA]) { 647 k->p.key = nla_data(tb[NL80211_KEY_DATA]); 648 k->p.key_len = nla_len(tb[NL80211_KEY_DATA]); 649 } 650 651 if (tb[NL80211_KEY_SEQ]) { 652 k->p.seq = nla_data(tb[NL80211_KEY_SEQ]); 653 k->p.seq_len = nla_len(tb[NL80211_KEY_SEQ]); 654 } 655 656 if (tb[NL80211_KEY_CIPHER]) 657 k->p.cipher = nla_get_u32(tb[NL80211_KEY_CIPHER]); 658 659 if (tb[NL80211_KEY_TYPE]) { 660 k->type = nla_get_u32(tb[NL80211_KEY_TYPE]); 661 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES) 662 return -EINVAL; 663 } 664 665 if (tb[NL80211_KEY_DEFAULT_TYPES]) { 666 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES]; 667 err = nla_parse_nested(kdt, NUM_NL80211_KEY_DEFAULT_TYPES - 1, 668 tb[NL80211_KEY_DEFAULT_TYPES], 669 nl80211_key_default_policy); 670 if (err) 671 return err; 672 673 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST]; 674 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST]; 675 } 676 677 return 0; 678 } 679 680 static int nl80211_parse_key_old(struct genl_info *info, struct key_parse *k) 681 { 682 if (info->attrs[NL80211_ATTR_KEY_DATA]) { 683 k->p.key = nla_data(info->attrs[NL80211_ATTR_KEY_DATA]); 684 k->p.key_len = nla_len(info->attrs[NL80211_ATTR_KEY_DATA]); 685 } 686 687 if (info->attrs[NL80211_ATTR_KEY_SEQ]) { 688 k->p.seq = nla_data(info->attrs[NL80211_ATTR_KEY_SEQ]); 689 k->p.seq_len = nla_len(info->attrs[NL80211_ATTR_KEY_SEQ]); 690 } 691 692 if (info->attrs[NL80211_ATTR_KEY_IDX]) 693 k->idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]); 694 695 if (info->attrs[NL80211_ATTR_KEY_CIPHER]) 696 k->p.cipher = nla_get_u32(info->attrs[NL80211_ATTR_KEY_CIPHER]); 697 698 k->def = !!info->attrs[NL80211_ATTR_KEY_DEFAULT]; 699 k->defmgmt = !!info->attrs[NL80211_ATTR_KEY_DEFAULT_MGMT]; 700 701 if (k->def) { 702 k->def_uni = true; 703 k->def_multi = true; 704 } 705 if (k->defmgmt) 706 k->def_multi = true; 707 708 if (info->attrs[NL80211_ATTR_KEY_TYPE]) { 709 k->type = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]); 710 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES) 711 return -EINVAL; 712 } 713 714 if (info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES]) { 715 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES]; 716 int err = nla_parse_nested( 717 kdt, NUM_NL80211_KEY_DEFAULT_TYPES - 1, 718 info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES], 719 nl80211_key_default_policy); 720 if (err) 721 return err; 722 723 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST]; 724 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST]; 725 } 726 727 return 0; 728 } 729 730 static int nl80211_parse_key(struct genl_info *info, struct key_parse *k) 731 { 732 int err; 733 734 memset(k, 0, sizeof(*k)); 735 k->idx = -1; 736 k->type = -1; 737 738 if (info->attrs[NL80211_ATTR_KEY]) 739 err = nl80211_parse_key_new(info->attrs[NL80211_ATTR_KEY], k); 740 else 741 err = nl80211_parse_key_old(info, k); 742 743 if (err) 744 return err; 745 746 if (k->def && k->defmgmt) 747 return -EINVAL; 748 749 if (k->defmgmt) { 750 if (k->def_uni || !k->def_multi) 751 return -EINVAL; 752 } 753 754 if (k->idx != -1) { 755 if (k->defmgmt) { 756 if (k->idx < 4 || k->idx > 5) 757 return -EINVAL; 758 } else if (k->def) { 759 if (k->idx < 0 || k->idx > 3) 760 return -EINVAL; 761 } else { 762 if (k->idx < 0 || k->idx > 5) 763 return -EINVAL; 764 } 765 } 766 767 return 0; 768 } 769 770 static struct cfg80211_cached_keys * 771 nl80211_parse_connkeys(struct cfg80211_registered_device *rdev, 772 struct nlattr *keys, bool *no_ht) 773 { 774 struct key_parse parse; 775 struct nlattr *key; 776 struct cfg80211_cached_keys *result; 777 int rem, err, def = 0; 778 779 result = kzalloc(sizeof(*result), GFP_KERNEL); 780 if (!result) 781 return ERR_PTR(-ENOMEM); 782 783 result->def = -1; 784 result->defmgmt = -1; 785 786 nla_for_each_nested(key, keys, rem) { 787 memset(&parse, 0, sizeof(parse)); 788 parse.idx = -1; 789 790 err = nl80211_parse_key_new(key, &parse); 791 if (err) 792 goto error; 793 err = -EINVAL; 794 if (!parse.p.key) 795 goto error; 796 if (parse.idx < 0 || parse.idx > 4) 797 goto error; 798 if (parse.def) { 799 if (def) 800 goto error; 801 def = 1; 802 result->def = parse.idx; 803 if (!parse.def_uni || !parse.def_multi) 804 goto error; 805 } else if (parse.defmgmt) 806 goto error; 807 err = cfg80211_validate_key_settings(rdev, &parse.p, 808 parse.idx, false, NULL); 809 if (err) 810 goto error; 811 result->params[parse.idx].cipher = parse.p.cipher; 812 result->params[parse.idx].key_len = parse.p.key_len; 813 result->params[parse.idx].key = result->data[parse.idx]; 814 memcpy(result->data[parse.idx], parse.p.key, parse.p.key_len); 815 816 if (parse.p.cipher == WLAN_CIPHER_SUITE_WEP40 || 817 parse.p.cipher == WLAN_CIPHER_SUITE_WEP104) { 818 if (no_ht) 819 *no_ht = true; 820 } 821 } 822 823 return result; 824 error: 825 kfree(result); 826 return ERR_PTR(err); 827 } 828 829 static int nl80211_key_allowed(struct wireless_dev *wdev) 830 { 831 ASSERT_WDEV_LOCK(wdev); 832 833 switch (wdev->iftype) { 834 case NL80211_IFTYPE_AP: 835 case NL80211_IFTYPE_AP_VLAN: 836 case NL80211_IFTYPE_P2P_GO: 837 case NL80211_IFTYPE_MESH_POINT: 838 break; 839 case NL80211_IFTYPE_ADHOC: 840 case NL80211_IFTYPE_STATION: 841 case NL80211_IFTYPE_P2P_CLIENT: 842 if (!wdev->current_bss) 843 return -ENOLINK; 844 break; 845 default: 846 return -EINVAL; 847 } 848 849 return 0; 850 } 851 852 static int nl80211_put_iftypes(struct sk_buff *msg, u32 attr, u16 ifmodes) 853 { 854 struct nlattr *nl_modes = nla_nest_start(msg, attr); 855 int i; 856 857 if (!nl_modes) 858 goto nla_put_failure; 859 860 i = 0; 861 while (ifmodes) { 862 if ((ifmodes & 1) && nla_put_flag(msg, i)) 863 goto nla_put_failure; 864 ifmodes >>= 1; 865 i++; 866 } 867 868 nla_nest_end(msg, nl_modes); 869 return 0; 870 871 nla_put_failure: 872 return -ENOBUFS; 873 } 874 875 static int nl80211_put_iface_combinations(struct wiphy *wiphy, 876 struct sk_buff *msg, 877 bool large) 878 { 879 struct nlattr *nl_combis; 880 int i, j; 881 882 nl_combis = nla_nest_start(msg, 883 NL80211_ATTR_INTERFACE_COMBINATIONS); 884 if (!nl_combis) 885 goto nla_put_failure; 886 887 for (i = 0; i < wiphy->n_iface_combinations; i++) { 888 const struct ieee80211_iface_combination *c; 889 struct nlattr *nl_combi, *nl_limits; 890 891 c = &wiphy->iface_combinations[i]; 892 893 nl_combi = nla_nest_start(msg, i + 1); 894 if (!nl_combi) 895 goto nla_put_failure; 896 897 nl_limits = nla_nest_start(msg, NL80211_IFACE_COMB_LIMITS); 898 if (!nl_limits) 899 goto nla_put_failure; 900 901 for (j = 0; j < c->n_limits; j++) { 902 struct nlattr *nl_limit; 903 904 nl_limit = nla_nest_start(msg, j + 1); 905 if (!nl_limit) 906 goto nla_put_failure; 907 if (nla_put_u32(msg, NL80211_IFACE_LIMIT_MAX, 908 c->limits[j].max)) 909 goto nla_put_failure; 910 if (nl80211_put_iftypes(msg, NL80211_IFACE_LIMIT_TYPES, 911 c->limits[j].types)) 912 goto nla_put_failure; 913 nla_nest_end(msg, nl_limit); 914 } 915 916 nla_nest_end(msg, nl_limits); 917 918 if (c->beacon_int_infra_match && 919 nla_put_flag(msg, NL80211_IFACE_COMB_STA_AP_BI_MATCH)) 920 goto nla_put_failure; 921 if (nla_put_u32(msg, NL80211_IFACE_COMB_NUM_CHANNELS, 922 c->num_different_channels) || 923 nla_put_u32(msg, NL80211_IFACE_COMB_MAXNUM, 924 c->max_interfaces)) 925 goto nla_put_failure; 926 if (large && 927 nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_WIDTHS, 928 c->radar_detect_widths)) 929 goto nla_put_failure; 930 931 nla_nest_end(msg, nl_combi); 932 } 933 934 nla_nest_end(msg, nl_combis); 935 936 return 0; 937 nla_put_failure: 938 return -ENOBUFS; 939 } 940 941 #ifdef CONFIG_PM 942 static int nl80211_send_wowlan_tcp_caps(struct cfg80211_registered_device *rdev, 943 struct sk_buff *msg) 944 { 945 const struct wiphy_wowlan_tcp_support *tcp = rdev->wiphy.wowlan->tcp; 946 struct nlattr *nl_tcp; 947 948 if (!tcp) 949 return 0; 950 951 nl_tcp = nla_nest_start(msg, NL80211_WOWLAN_TRIG_TCP_CONNECTION); 952 if (!nl_tcp) 953 return -ENOBUFS; 954 955 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD, 956 tcp->data_payload_max)) 957 return -ENOBUFS; 958 959 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD, 960 tcp->data_payload_max)) 961 return -ENOBUFS; 962 963 if (tcp->seq && nla_put_flag(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ)) 964 return -ENOBUFS; 965 966 if (tcp->tok && nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN, 967 sizeof(*tcp->tok), tcp->tok)) 968 return -ENOBUFS; 969 970 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL, 971 tcp->data_interval_max)) 972 return -ENOBUFS; 973 974 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD, 975 tcp->wake_payload_max)) 976 return -ENOBUFS; 977 978 nla_nest_end(msg, nl_tcp); 979 return 0; 980 } 981 982 static int nl80211_send_wowlan(struct sk_buff *msg, 983 struct cfg80211_registered_device *dev, 984 bool large) 985 { 986 struct nlattr *nl_wowlan; 987 988 if (!dev->wiphy.wowlan) 989 return 0; 990 991 nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS_SUPPORTED); 992 if (!nl_wowlan) 993 return -ENOBUFS; 994 995 if (((dev->wiphy.wowlan->flags & WIPHY_WOWLAN_ANY) && 996 nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) || 997 ((dev->wiphy.wowlan->flags & WIPHY_WOWLAN_DISCONNECT) && 998 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) || 999 ((dev->wiphy.wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT) && 1000 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) || 1001 ((dev->wiphy.wowlan->flags & WIPHY_WOWLAN_SUPPORTS_GTK_REKEY) && 1002 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED)) || 1003 ((dev->wiphy.wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE) && 1004 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) || 1005 ((dev->wiphy.wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ) && 1006 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) || 1007 ((dev->wiphy.wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE) && 1008 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) || 1009 ((dev->wiphy.wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE) && 1010 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE))) 1011 return -ENOBUFS; 1012 1013 if (dev->wiphy.wowlan->n_patterns) { 1014 struct nl80211_pattern_support pat = { 1015 .max_patterns = dev->wiphy.wowlan->n_patterns, 1016 .min_pattern_len = dev->wiphy.wowlan->pattern_min_len, 1017 .max_pattern_len = dev->wiphy.wowlan->pattern_max_len, 1018 .max_pkt_offset = dev->wiphy.wowlan->max_pkt_offset, 1019 }; 1020 1021 if (nla_put(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN, 1022 sizeof(pat), &pat)) 1023 return -ENOBUFS; 1024 } 1025 1026 if (large && nl80211_send_wowlan_tcp_caps(dev, msg)) 1027 return -ENOBUFS; 1028 1029 nla_nest_end(msg, nl_wowlan); 1030 1031 return 0; 1032 } 1033 #endif 1034 1035 static int nl80211_send_coalesce(struct sk_buff *msg, 1036 struct cfg80211_registered_device *dev) 1037 { 1038 struct nl80211_coalesce_rule_support rule; 1039 1040 if (!dev->wiphy.coalesce) 1041 return 0; 1042 1043 rule.max_rules = dev->wiphy.coalesce->n_rules; 1044 rule.max_delay = dev->wiphy.coalesce->max_delay; 1045 rule.pat.max_patterns = dev->wiphy.coalesce->n_patterns; 1046 rule.pat.min_pattern_len = dev->wiphy.coalesce->pattern_min_len; 1047 rule.pat.max_pattern_len = dev->wiphy.coalesce->pattern_max_len; 1048 rule.pat.max_pkt_offset = dev->wiphy.coalesce->max_pkt_offset; 1049 1050 if (nla_put(msg, NL80211_ATTR_COALESCE_RULE, sizeof(rule), &rule)) 1051 return -ENOBUFS; 1052 1053 return 0; 1054 } 1055 1056 static int nl80211_send_band_rateinfo(struct sk_buff *msg, 1057 struct ieee80211_supported_band *sband) 1058 { 1059 struct nlattr *nl_rates, *nl_rate; 1060 struct ieee80211_rate *rate; 1061 int i; 1062 1063 /* add HT info */ 1064 if (sband->ht_cap.ht_supported && 1065 (nla_put(msg, NL80211_BAND_ATTR_HT_MCS_SET, 1066 sizeof(sband->ht_cap.mcs), 1067 &sband->ht_cap.mcs) || 1068 nla_put_u16(msg, NL80211_BAND_ATTR_HT_CAPA, 1069 sband->ht_cap.cap) || 1070 nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_FACTOR, 1071 sband->ht_cap.ampdu_factor) || 1072 nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_DENSITY, 1073 sband->ht_cap.ampdu_density))) 1074 return -ENOBUFS; 1075 1076 /* add VHT info */ 1077 if (sband->vht_cap.vht_supported && 1078 (nla_put(msg, NL80211_BAND_ATTR_VHT_MCS_SET, 1079 sizeof(sband->vht_cap.vht_mcs), 1080 &sband->vht_cap.vht_mcs) || 1081 nla_put_u32(msg, NL80211_BAND_ATTR_VHT_CAPA, 1082 sband->vht_cap.cap))) 1083 return -ENOBUFS; 1084 1085 /* add bitrates */ 1086 nl_rates = nla_nest_start(msg, NL80211_BAND_ATTR_RATES); 1087 if (!nl_rates) 1088 return -ENOBUFS; 1089 1090 for (i = 0; i < sband->n_bitrates; i++) { 1091 nl_rate = nla_nest_start(msg, i); 1092 if (!nl_rate) 1093 return -ENOBUFS; 1094 1095 rate = &sband->bitrates[i]; 1096 if (nla_put_u32(msg, NL80211_BITRATE_ATTR_RATE, 1097 rate->bitrate)) 1098 return -ENOBUFS; 1099 if ((rate->flags & IEEE80211_RATE_SHORT_PREAMBLE) && 1100 nla_put_flag(msg, 1101 NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE)) 1102 return -ENOBUFS; 1103 1104 nla_nest_end(msg, nl_rate); 1105 } 1106 1107 nla_nest_end(msg, nl_rates); 1108 1109 return 0; 1110 } 1111 1112 static int 1113 nl80211_send_mgmt_stypes(struct sk_buff *msg, 1114 const struct ieee80211_txrx_stypes *mgmt_stypes) 1115 { 1116 u16 stypes; 1117 struct nlattr *nl_ftypes, *nl_ifs; 1118 enum nl80211_iftype ift; 1119 int i; 1120 1121 if (!mgmt_stypes) 1122 return 0; 1123 1124 nl_ifs = nla_nest_start(msg, NL80211_ATTR_TX_FRAME_TYPES); 1125 if (!nl_ifs) 1126 return -ENOBUFS; 1127 1128 for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) { 1129 nl_ftypes = nla_nest_start(msg, ift); 1130 if (!nl_ftypes) 1131 return -ENOBUFS; 1132 i = 0; 1133 stypes = mgmt_stypes[ift].tx; 1134 while (stypes) { 1135 if ((stypes & 1) && 1136 nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE, 1137 (i << 4) | IEEE80211_FTYPE_MGMT)) 1138 return -ENOBUFS; 1139 stypes >>= 1; 1140 i++; 1141 } 1142 nla_nest_end(msg, nl_ftypes); 1143 } 1144 1145 nla_nest_end(msg, nl_ifs); 1146 1147 nl_ifs = nla_nest_start(msg, NL80211_ATTR_RX_FRAME_TYPES); 1148 if (!nl_ifs) 1149 return -ENOBUFS; 1150 1151 for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) { 1152 nl_ftypes = nla_nest_start(msg, ift); 1153 if (!nl_ftypes) 1154 return -ENOBUFS; 1155 i = 0; 1156 stypes = mgmt_stypes[ift].rx; 1157 while (stypes) { 1158 if ((stypes & 1) && 1159 nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE, 1160 (i << 4) | IEEE80211_FTYPE_MGMT)) 1161 return -ENOBUFS; 1162 stypes >>= 1; 1163 i++; 1164 } 1165 nla_nest_end(msg, nl_ftypes); 1166 } 1167 nla_nest_end(msg, nl_ifs); 1168 1169 return 0; 1170 } 1171 1172 struct nl80211_dump_wiphy_state { 1173 s64 filter_wiphy; 1174 long start; 1175 long split_start, band_start, chan_start; 1176 bool split; 1177 }; 1178 1179 static int nl80211_send_wiphy(struct cfg80211_registered_device *dev, 1180 struct sk_buff *msg, u32 portid, u32 seq, 1181 int flags, struct nl80211_dump_wiphy_state *state) 1182 { 1183 void *hdr; 1184 struct nlattr *nl_bands, *nl_band; 1185 struct nlattr *nl_freqs, *nl_freq; 1186 struct nlattr *nl_cmds; 1187 enum ieee80211_band band; 1188 struct ieee80211_channel *chan; 1189 int i; 1190 const struct ieee80211_txrx_stypes *mgmt_stypes = 1191 dev->wiphy.mgmt_stypes; 1192 u32 features; 1193 1194 hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_WIPHY); 1195 if (!hdr) 1196 return -ENOBUFS; 1197 1198 if (WARN_ON(!state)) 1199 return -EINVAL; 1200 1201 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, dev->wiphy_idx) || 1202 nla_put_string(msg, NL80211_ATTR_WIPHY_NAME, 1203 wiphy_name(&dev->wiphy)) || 1204 nla_put_u32(msg, NL80211_ATTR_GENERATION, 1205 cfg80211_rdev_list_generation)) 1206 goto nla_put_failure; 1207 1208 switch (state->split_start) { 1209 case 0: 1210 if (nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_SHORT, 1211 dev->wiphy.retry_short) || 1212 nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_LONG, 1213 dev->wiphy.retry_long) || 1214 nla_put_u32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD, 1215 dev->wiphy.frag_threshold) || 1216 nla_put_u32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD, 1217 dev->wiphy.rts_threshold) || 1218 nla_put_u8(msg, NL80211_ATTR_WIPHY_COVERAGE_CLASS, 1219 dev->wiphy.coverage_class) || 1220 nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCAN_SSIDS, 1221 dev->wiphy.max_scan_ssids) || 1222 nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS, 1223 dev->wiphy.max_sched_scan_ssids) || 1224 nla_put_u16(msg, NL80211_ATTR_MAX_SCAN_IE_LEN, 1225 dev->wiphy.max_scan_ie_len) || 1226 nla_put_u16(msg, NL80211_ATTR_MAX_SCHED_SCAN_IE_LEN, 1227 dev->wiphy.max_sched_scan_ie_len) || 1228 nla_put_u8(msg, NL80211_ATTR_MAX_MATCH_SETS, 1229 dev->wiphy.max_match_sets)) 1230 goto nla_put_failure; 1231 1232 if ((dev->wiphy.flags & WIPHY_FLAG_IBSS_RSN) && 1233 nla_put_flag(msg, NL80211_ATTR_SUPPORT_IBSS_RSN)) 1234 goto nla_put_failure; 1235 if ((dev->wiphy.flags & WIPHY_FLAG_MESH_AUTH) && 1236 nla_put_flag(msg, NL80211_ATTR_SUPPORT_MESH_AUTH)) 1237 goto nla_put_failure; 1238 if ((dev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) && 1239 nla_put_flag(msg, NL80211_ATTR_SUPPORT_AP_UAPSD)) 1240 goto nla_put_failure; 1241 if ((dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_FW_ROAM) && 1242 nla_put_flag(msg, NL80211_ATTR_ROAM_SUPPORT)) 1243 goto nla_put_failure; 1244 if ((dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) && 1245 nla_put_flag(msg, NL80211_ATTR_TDLS_SUPPORT)) 1246 goto nla_put_failure; 1247 if ((dev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP) && 1248 nla_put_flag(msg, NL80211_ATTR_TDLS_EXTERNAL_SETUP)) 1249 goto nla_put_failure; 1250 if ((dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ) && 1251 nla_put_flag(msg, WIPHY_FLAG_SUPPORTS_5_10_MHZ)) 1252 goto nla_put_failure; 1253 1254 state->split_start++; 1255 if (state->split) 1256 break; 1257 case 1: 1258 if (nla_put(msg, NL80211_ATTR_CIPHER_SUITES, 1259 sizeof(u32) * dev->wiphy.n_cipher_suites, 1260 dev->wiphy.cipher_suites)) 1261 goto nla_put_failure; 1262 1263 if (nla_put_u8(msg, NL80211_ATTR_MAX_NUM_PMKIDS, 1264 dev->wiphy.max_num_pmkids)) 1265 goto nla_put_failure; 1266 1267 if ((dev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) && 1268 nla_put_flag(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE)) 1269 goto nla_put_failure; 1270 1271 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_TX, 1272 dev->wiphy.available_antennas_tx) || 1273 nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_RX, 1274 dev->wiphy.available_antennas_rx)) 1275 goto nla_put_failure; 1276 1277 if ((dev->wiphy.flags & WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD) && 1278 nla_put_u32(msg, NL80211_ATTR_PROBE_RESP_OFFLOAD, 1279 dev->wiphy.probe_resp_offload)) 1280 goto nla_put_failure; 1281 1282 if ((dev->wiphy.available_antennas_tx || 1283 dev->wiphy.available_antennas_rx) && 1284 dev->ops->get_antenna) { 1285 u32 tx_ant = 0, rx_ant = 0; 1286 int res; 1287 res = rdev_get_antenna(dev, &tx_ant, &rx_ant); 1288 if (!res) { 1289 if (nla_put_u32(msg, 1290 NL80211_ATTR_WIPHY_ANTENNA_TX, 1291 tx_ant) || 1292 nla_put_u32(msg, 1293 NL80211_ATTR_WIPHY_ANTENNA_RX, 1294 rx_ant)) 1295 goto nla_put_failure; 1296 } 1297 } 1298 1299 state->split_start++; 1300 if (state->split) 1301 break; 1302 case 2: 1303 if (nl80211_put_iftypes(msg, NL80211_ATTR_SUPPORTED_IFTYPES, 1304 dev->wiphy.interface_modes)) 1305 goto nla_put_failure; 1306 state->split_start++; 1307 if (state->split) 1308 break; 1309 case 3: 1310 nl_bands = nla_nest_start(msg, NL80211_ATTR_WIPHY_BANDS); 1311 if (!nl_bands) 1312 goto nla_put_failure; 1313 1314 for (band = state->band_start; 1315 band < IEEE80211_NUM_BANDS; band++) { 1316 struct ieee80211_supported_band *sband; 1317 1318 sband = dev->wiphy.bands[band]; 1319 1320 if (!sband) 1321 continue; 1322 1323 nl_band = nla_nest_start(msg, band); 1324 if (!nl_band) 1325 goto nla_put_failure; 1326 1327 switch (state->chan_start) { 1328 case 0: 1329 if (nl80211_send_band_rateinfo(msg, sband)) 1330 goto nla_put_failure; 1331 state->chan_start++; 1332 if (state->split) 1333 break; 1334 default: 1335 /* add frequencies */ 1336 nl_freqs = nla_nest_start( 1337 msg, NL80211_BAND_ATTR_FREQS); 1338 if (!nl_freqs) 1339 goto nla_put_failure; 1340 1341 for (i = state->chan_start - 1; 1342 i < sband->n_channels; 1343 i++) { 1344 nl_freq = nla_nest_start(msg, i); 1345 if (!nl_freq) 1346 goto nla_put_failure; 1347 1348 chan = &sband->channels[i]; 1349 1350 if (nl80211_msg_put_channel( 1351 msg, chan, 1352 state->split)) 1353 goto nla_put_failure; 1354 1355 nla_nest_end(msg, nl_freq); 1356 if (state->split) 1357 break; 1358 } 1359 if (i < sband->n_channels) 1360 state->chan_start = i + 2; 1361 else 1362 state->chan_start = 0; 1363 nla_nest_end(msg, nl_freqs); 1364 } 1365 1366 nla_nest_end(msg, nl_band); 1367 1368 if (state->split) { 1369 /* start again here */ 1370 if (state->chan_start) 1371 band--; 1372 break; 1373 } 1374 } 1375 nla_nest_end(msg, nl_bands); 1376 1377 if (band < IEEE80211_NUM_BANDS) 1378 state->band_start = band + 1; 1379 else 1380 state->band_start = 0; 1381 1382 /* if bands & channels are done, continue outside */ 1383 if (state->band_start == 0 && state->chan_start == 0) 1384 state->split_start++; 1385 if (state->split) 1386 break; 1387 case 4: 1388 nl_cmds = nla_nest_start(msg, NL80211_ATTR_SUPPORTED_COMMANDS); 1389 if (!nl_cmds) 1390 goto nla_put_failure; 1391 1392 i = 0; 1393 #define CMD(op, n) \ 1394 do { \ 1395 if (dev->ops->op) { \ 1396 i++; \ 1397 if (nla_put_u32(msg, i, NL80211_CMD_ ## n)) \ 1398 goto nla_put_failure; \ 1399 } \ 1400 } while (0) 1401 1402 CMD(add_virtual_intf, NEW_INTERFACE); 1403 CMD(change_virtual_intf, SET_INTERFACE); 1404 CMD(add_key, NEW_KEY); 1405 CMD(start_ap, START_AP); 1406 CMD(add_station, NEW_STATION); 1407 CMD(add_mpath, NEW_MPATH); 1408 CMD(update_mesh_config, SET_MESH_CONFIG); 1409 CMD(change_bss, SET_BSS); 1410 CMD(auth, AUTHENTICATE); 1411 CMD(assoc, ASSOCIATE); 1412 CMD(deauth, DEAUTHENTICATE); 1413 CMD(disassoc, DISASSOCIATE); 1414 CMD(join_ibss, JOIN_IBSS); 1415 CMD(join_mesh, JOIN_MESH); 1416 CMD(set_pmksa, SET_PMKSA); 1417 CMD(del_pmksa, DEL_PMKSA); 1418 CMD(flush_pmksa, FLUSH_PMKSA); 1419 if (dev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL) 1420 CMD(remain_on_channel, REMAIN_ON_CHANNEL); 1421 CMD(set_bitrate_mask, SET_TX_BITRATE_MASK); 1422 CMD(mgmt_tx, FRAME); 1423 CMD(mgmt_tx_cancel_wait, FRAME_WAIT_CANCEL); 1424 if (dev->wiphy.flags & WIPHY_FLAG_NETNS_OK) { 1425 i++; 1426 if (nla_put_u32(msg, i, NL80211_CMD_SET_WIPHY_NETNS)) 1427 goto nla_put_failure; 1428 } 1429 if (dev->ops->set_monitor_channel || dev->ops->start_ap || 1430 dev->ops->join_mesh) { 1431 i++; 1432 if (nla_put_u32(msg, i, NL80211_CMD_SET_CHANNEL)) 1433 goto nla_put_failure; 1434 } 1435 CMD(set_wds_peer, SET_WDS_PEER); 1436 if (dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) { 1437 CMD(tdls_mgmt, TDLS_MGMT); 1438 CMD(tdls_oper, TDLS_OPER); 1439 } 1440 if (dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) 1441 CMD(sched_scan_start, START_SCHED_SCAN); 1442 CMD(probe_client, PROBE_CLIENT); 1443 CMD(set_noack_map, SET_NOACK_MAP); 1444 if (dev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS) { 1445 i++; 1446 if (nla_put_u32(msg, i, NL80211_CMD_REGISTER_BEACONS)) 1447 goto nla_put_failure; 1448 } 1449 CMD(start_p2p_device, START_P2P_DEVICE); 1450 CMD(set_mcast_rate, SET_MCAST_RATE); 1451 if (state->split) { 1452 CMD(crit_proto_start, CRIT_PROTOCOL_START); 1453 CMD(crit_proto_stop, CRIT_PROTOCOL_STOP); 1454 if (dev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH) 1455 CMD(channel_switch, CHANNEL_SWITCH); 1456 } 1457 1458 #ifdef CONFIG_NL80211_TESTMODE 1459 CMD(testmode_cmd, TESTMODE); 1460 #endif 1461 1462 #undef CMD 1463 1464 if (dev->ops->connect || dev->ops->auth) { 1465 i++; 1466 if (nla_put_u32(msg, i, NL80211_CMD_CONNECT)) 1467 goto nla_put_failure; 1468 } 1469 1470 if (dev->ops->disconnect || dev->ops->deauth) { 1471 i++; 1472 if (nla_put_u32(msg, i, NL80211_CMD_DISCONNECT)) 1473 goto nla_put_failure; 1474 } 1475 1476 nla_nest_end(msg, nl_cmds); 1477 state->split_start++; 1478 if (state->split) 1479 break; 1480 case 5: 1481 if (dev->ops->remain_on_channel && 1482 (dev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL) && 1483 nla_put_u32(msg, 1484 NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION, 1485 dev->wiphy.max_remain_on_channel_duration)) 1486 goto nla_put_failure; 1487 1488 if ((dev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX) && 1489 nla_put_flag(msg, NL80211_ATTR_OFFCHANNEL_TX_OK)) 1490 goto nla_put_failure; 1491 1492 if (nl80211_send_mgmt_stypes(msg, mgmt_stypes)) 1493 goto nla_put_failure; 1494 state->split_start++; 1495 if (state->split) 1496 break; 1497 case 6: 1498 #ifdef CONFIG_PM 1499 if (nl80211_send_wowlan(msg, dev, state->split)) 1500 goto nla_put_failure; 1501 state->split_start++; 1502 if (state->split) 1503 break; 1504 #else 1505 state->split_start++; 1506 #endif 1507 case 7: 1508 if (nl80211_put_iftypes(msg, NL80211_ATTR_SOFTWARE_IFTYPES, 1509 dev->wiphy.software_iftypes)) 1510 goto nla_put_failure; 1511 1512 if (nl80211_put_iface_combinations(&dev->wiphy, msg, 1513 state->split)) 1514 goto nla_put_failure; 1515 1516 state->split_start++; 1517 if (state->split) 1518 break; 1519 case 8: 1520 if ((dev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME) && 1521 nla_put_u32(msg, NL80211_ATTR_DEVICE_AP_SME, 1522 dev->wiphy.ap_sme_capa)) 1523 goto nla_put_failure; 1524 1525 features = dev->wiphy.features; 1526 /* 1527 * We can only add the per-channel limit information if the 1528 * dump is split, otherwise it makes it too big. Therefore 1529 * only advertise it in that case. 1530 */ 1531 if (state->split) 1532 features |= NL80211_FEATURE_ADVERTISE_CHAN_LIMITS; 1533 if (nla_put_u32(msg, NL80211_ATTR_FEATURE_FLAGS, features)) 1534 goto nla_put_failure; 1535 1536 if (dev->wiphy.ht_capa_mod_mask && 1537 nla_put(msg, NL80211_ATTR_HT_CAPABILITY_MASK, 1538 sizeof(*dev->wiphy.ht_capa_mod_mask), 1539 dev->wiphy.ht_capa_mod_mask)) 1540 goto nla_put_failure; 1541 1542 if (dev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME && 1543 dev->wiphy.max_acl_mac_addrs && 1544 nla_put_u32(msg, NL80211_ATTR_MAC_ACL_MAX, 1545 dev->wiphy.max_acl_mac_addrs)) 1546 goto nla_put_failure; 1547 1548 /* 1549 * Any information below this point is only available to 1550 * applications that can deal with it being split. This 1551 * helps ensure that newly added capabilities don't break 1552 * older tools by overrunning their buffers. 1553 * 1554 * We still increment split_start so that in the split 1555 * case we'll continue with more data in the next round, 1556 * but break unconditionally so unsplit data stops here. 1557 */ 1558 state->split_start++; 1559 break; 1560 case 9: 1561 if (dev->wiphy.extended_capabilities && 1562 (nla_put(msg, NL80211_ATTR_EXT_CAPA, 1563 dev->wiphy.extended_capabilities_len, 1564 dev->wiphy.extended_capabilities) || 1565 nla_put(msg, NL80211_ATTR_EXT_CAPA_MASK, 1566 dev->wiphy.extended_capabilities_len, 1567 dev->wiphy.extended_capabilities_mask))) 1568 goto nla_put_failure; 1569 1570 if (dev->wiphy.vht_capa_mod_mask && 1571 nla_put(msg, NL80211_ATTR_VHT_CAPABILITY_MASK, 1572 sizeof(*dev->wiphy.vht_capa_mod_mask), 1573 dev->wiphy.vht_capa_mod_mask)) 1574 goto nla_put_failure; 1575 1576 state->split_start++; 1577 break; 1578 case 10: 1579 if (nl80211_send_coalesce(msg, dev)) 1580 goto nla_put_failure; 1581 1582 /* done */ 1583 state->split_start = 0; 1584 break; 1585 } 1586 return genlmsg_end(msg, hdr); 1587 1588 nla_put_failure: 1589 genlmsg_cancel(msg, hdr); 1590 return -EMSGSIZE; 1591 } 1592 1593 static int nl80211_dump_wiphy_parse(struct sk_buff *skb, 1594 struct netlink_callback *cb, 1595 struct nl80211_dump_wiphy_state *state) 1596 { 1597 struct nlattr **tb = nl80211_fam.attrbuf; 1598 int ret = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize, 1599 tb, nl80211_fam.maxattr, nl80211_policy); 1600 /* ignore parse errors for backward compatibility */ 1601 if (ret) 1602 return 0; 1603 1604 state->split = tb[NL80211_ATTR_SPLIT_WIPHY_DUMP]; 1605 if (tb[NL80211_ATTR_WIPHY]) 1606 state->filter_wiphy = nla_get_u32(tb[NL80211_ATTR_WIPHY]); 1607 if (tb[NL80211_ATTR_WDEV]) 1608 state->filter_wiphy = nla_get_u64(tb[NL80211_ATTR_WDEV]) >> 32; 1609 if (tb[NL80211_ATTR_IFINDEX]) { 1610 struct net_device *netdev; 1611 struct cfg80211_registered_device *rdev; 1612 int ifidx = nla_get_u32(tb[NL80211_ATTR_IFINDEX]); 1613 1614 netdev = dev_get_by_index(sock_net(skb->sk), ifidx); 1615 if (!netdev) 1616 return -ENODEV; 1617 if (netdev->ieee80211_ptr) { 1618 rdev = wiphy_to_dev( 1619 netdev->ieee80211_ptr->wiphy); 1620 state->filter_wiphy = rdev->wiphy_idx; 1621 } 1622 dev_put(netdev); 1623 } 1624 1625 return 0; 1626 } 1627 1628 static int nl80211_dump_wiphy(struct sk_buff *skb, struct netlink_callback *cb) 1629 { 1630 int idx = 0, ret; 1631 struct nl80211_dump_wiphy_state *state = (void *)cb->args[0]; 1632 struct cfg80211_registered_device *dev; 1633 1634 rtnl_lock(); 1635 if (!state) { 1636 state = kzalloc(sizeof(*state), GFP_KERNEL); 1637 if (!state) { 1638 rtnl_unlock(); 1639 return -ENOMEM; 1640 } 1641 state->filter_wiphy = -1; 1642 ret = nl80211_dump_wiphy_parse(skb, cb, state); 1643 if (ret) { 1644 kfree(state); 1645 rtnl_unlock(); 1646 return ret; 1647 } 1648 cb->args[0] = (long)state; 1649 } 1650 1651 list_for_each_entry(dev, &cfg80211_rdev_list, list) { 1652 if (!net_eq(wiphy_net(&dev->wiphy), sock_net(skb->sk))) 1653 continue; 1654 if (++idx <= state->start) 1655 continue; 1656 if (state->filter_wiphy != -1 && 1657 state->filter_wiphy != dev->wiphy_idx) 1658 continue; 1659 /* attempt to fit multiple wiphy data chunks into the skb */ 1660 do { 1661 ret = nl80211_send_wiphy(dev, skb, 1662 NETLINK_CB(cb->skb).portid, 1663 cb->nlh->nlmsg_seq, 1664 NLM_F_MULTI, state); 1665 if (ret < 0) { 1666 /* 1667 * If sending the wiphy data didn't fit (ENOBUFS 1668 * or EMSGSIZE returned), this SKB is still 1669 * empty (so it's not too big because another 1670 * wiphy dataset is already in the skb) and 1671 * we've not tried to adjust the dump allocation 1672 * yet ... then adjust the alloc size to be 1673 * bigger, and return 1 but with the empty skb. 1674 * This results in an empty message being RX'ed 1675 * in userspace, but that is ignored. 1676 * 1677 * We can then retry with the larger buffer. 1678 */ 1679 if ((ret == -ENOBUFS || ret == -EMSGSIZE) && 1680 !skb->len && 1681 cb->min_dump_alloc < 4096) { 1682 cb->min_dump_alloc = 4096; 1683 rtnl_unlock(); 1684 return 1; 1685 } 1686 idx--; 1687 break; 1688 } 1689 } while (state->split_start > 0); 1690 break; 1691 } 1692 rtnl_unlock(); 1693 1694 state->start = idx; 1695 1696 return skb->len; 1697 } 1698 1699 static int nl80211_dump_wiphy_done(struct netlink_callback *cb) 1700 { 1701 kfree((void *)cb->args[0]); 1702 return 0; 1703 } 1704 1705 static int nl80211_get_wiphy(struct sk_buff *skb, struct genl_info *info) 1706 { 1707 struct sk_buff *msg; 1708 struct cfg80211_registered_device *dev = info->user_ptr[0]; 1709 struct nl80211_dump_wiphy_state state = {}; 1710 1711 msg = nlmsg_new(4096, GFP_KERNEL); 1712 if (!msg) 1713 return -ENOMEM; 1714 1715 if (nl80211_send_wiphy(dev, msg, info->snd_portid, info->snd_seq, 0, 1716 &state) < 0) { 1717 nlmsg_free(msg); 1718 return -ENOBUFS; 1719 } 1720 1721 return genlmsg_reply(msg, info); 1722 } 1723 1724 static const struct nla_policy txq_params_policy[NL80211_TXQ_ATTR_MAX + 1] = { 1725 [NL80211_TXQ_ATTR_QUEUE] = { .type = NLA_U8 }, 1726 [NL80211_TXQ_ATTR_TXOP] = { .type = NLA_U16 }, 1727 [NL80211_TXQ_ATTR_CWMIN] = { .type = NLA_U16 }, 1728 [NL80211_TXQ_ATTR_CWMAX] = { .type = NLA_U16 }, 1729 [NL80211_TXQ_ATTR_AIFS] = { .type = NLA_U8 }, 1730 }; 1731 1732 static int parse_txq_params(struct nlattr *tb[], 1733 struct ieee80211_txq_params *txq_params) 1734 { 1735 if (!tb[NL80211_TXQ_ATTR_AC] || !tb[NL80211_TXQ_ATTR_TXOP] || 1736 !tb[NL80211_TXQ_ATTR_CWMIN] || !tb[NL80211_TXQ_ATTR_CWMAX] || 1737 !tb[NL80211_TXQ_ATTR_AIFS]) 1738 return -EINVAL; 1739 1740 txq_params->ac = nla_get_u8(tb[NL80211_TXQ_ATTR_AC]); 1741 txq_params->txop = nla_get_u16(tb[NL80211_TXQ_ATTR_TXOP]); 1742 txq_params->cwmin = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMIN]); 1743 txq_params->cwmax = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMAX]); 1744 txq_params->aifs = nla_get_u8(tb[NL80211_TXQ_ATTR_AIFS]); 1745 1746 if (txq_params->ac >= NL80211_NUM_ACS) 1747 return -EINVAL; 1748 1749 return 0; 1750 } 1751 1752 static bool nl80211_can_set_dev_channel(struct wireless_dev *wdev) 1753 { 1754 /* 1755 * You can only set the channel explicitly for WDS interfaces, 1756 * all others have their channel managed via their respective 1757 * "establish a connection" command (connect, join, ...) 1758 * 1759 * For AP/GO and mesh mode, the channel can be set with the 1760 * channel userspace API, but is only stored and passed to the 1761 * low-level driver when the AP starts or the mesh is joined. 1762 * This is for backward compatibility, userspace can also give 1763 * the channel in the start-ap or join-mesh commands instead. 1764 * 1765 * Monitors are special as they are normally slaved to 1766 * whatever else is going on, so they have their own special 1767 * operation to set the monitor channel if possible. 1768 */ 1769 return !wdev || 1770 wdev->iftype == NL80211_IFTYPE_AP || 1771 wdev->iftype == NL80211_IFTYPE_MESH_POINT || 1772 wdev->iftype == NL80211_IFTYPE_MONITOR || 1773 wdev->iftype == NL80211_IFTYPE_P2P_GO; 1774 } 1775 1776 static int nl80211_parse_chandef(struct cfg80211_registered_device *rdev, 1777 struct genl_info *info, 1778 struct cfg80211_chan_def *chandef) 1779 { 1780 u32 control_freq; 1781 1782 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ]) 1783 return -EINVAL; 1784 1785 control_freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]); 1786 1787 chandef->chan = ieee80211_get_channel(&rdev->wiphy, control_freq); 1788 chandef->width = NL80211_CHAN_WIDTH_20_NOHT; 1789 chandef->center_freq1 = control_freq; 1790 chandef->center_freq2 = 0; 1791 1792 /* Primary channel not allowed */ 1793 if (!chandef->chan || chandef->chan->flags & IEEE80211_CHAN_DISABLED) 1794 return -EINVAL; 1795 1796 if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) { 1797 enum nl80211_channel_type chantype; 1798 1799 chantype = nla_get_u32( 1800 info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]); 1801 1802 switch (chantype) { 1803 case NL80211_CHAN_NO_HT: 1804 case NL80211_CHAN_HT20: 1805 case NL80211_CHAN_HT40PLUS: 1806 case NL80211_CHAN_HT40MINUS: 1807 cfg80211_chandef_create(chandef, chandef->chan, 1808 chantype); 1809 break; 1810 default: 1811 return -EINVAL; 1812 } 1813 } else if (info->attrs[NL80211_ATTR_CHANNEL_WIDTH]) { 1814 chandef->width = 1815 nla_get_u32(info->attrs[NL80211_ATTR_CHANNEL_WIDTH]); 1816 if (info->attrs[NL80211_ATTR_CENTER_FREQ1]) 1817 chandef->center_freq1 = 1818 nla_get_u32( 1819 info->attrs[NL80211_ATTR_CENTER_FREQ1]); 1820 if (info->attrs[NL80211_ATTR_CENTER_FREQ2]) 1821 chandef->center_freq2 = 1822 nla_get_u32( 1823 info->attrs[NL80211_ATTR_CENTER_FREQ2]); 1824 } 1825 1826 if (!cfg80211_chandef_valid(chandef)) 1827 return -EINVAL; 1828 1829 if (!cfg80211_chandef_usable(&rdev->wiphy, chandef, 1830 IEEE80211_CHAN_DISABLED)) 1831 return -EINVAL; 1832 1833 if ((chandef->width == NL80211_CHAN_WIDTH_5 || 1834 chandef->width == NL80211_CHAN_WIDTH_10) && 1835 !(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ)) 1836 return -EINVAL; 1837 1838 return 0; 1839 } 1840 1841 static int __nl80211_set_channel(struct cfg80211_registered_device *rdev, 1842 struct wireless_dev *wdev, 1843 struct genl_info *info) 1844 { 1845 struct cfg80211_chan_def chandef; 1846 int result; 1847 enum nl80211_iftype iftype = NL80211_IFTYPE_MONITOR; 1848 1849 if (wdev) 1850 iftype = wdev->iftype; 1851 1852 if (!nl80211_can_set_dev_channel(wdev)) 1853 return -EOPNOTSUPP; 1854 1855 result = nl80211_parse_chandef(rdev, info, &chandef); 1856 if (result) 1857 return result; 1858 1859 switch (iftype) { 1860 case NL80211_IFTYPE_AP: 1861 case NL80211_IFTYPE_P2P_GO: 1862 if (wdev->beacon_interval) { 1863 result = -EBUSY; 1864 break; 1865 } 1866 if (!cfg80211_reg_can_beacon(&rdev->wiphy, &chandef)) { 1867 result = -EINVAL; 1868 break; 1869 } 1870 wdev->preset_chandef = chandef; 1871 result = 0; 1872 break; 1873 case NL80211_IFTYPE_MESH_POINT: 1874 result = cfg80211_set_mesh_channel(rdev, wdev, &chandef); 1875 break; 1876 case NL80211_IFTYPE_MONITOR: 1877 result = cfg80211_set_monitor_channel(rdev, &chandef); 1878 break; 1879 default: 1880 result = -EINVAL; 1881 } 1882 1883 return result; 1884 } 1885 1886 static int nl80211_set_channel(struct sk_buff *skb, struct genl_info *info) 1887 { 1888 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 1889 struct net_device *netdev = info->user_ptr[1]; 1890 1891 return __nl80211_set_channel(rdev, netdev->ieee80211_ptr, info); 1892 } 1893 1894 static int nl80211_set_wds_peer(struct sk_buff *skb, struct genl_info *info) 1895 { 1896 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 1897 struct net_device *dev = info->user_ptr[1]; 1898 struct wireless_dev *wdev = dev->ieee80211_ptr; 1899 const u8 *bssid; 1900 1901 if (!info->attrs[NL80211_ATTR_MAC]) 1902 return -EINVAL; 1903 1904 if (netif_running(dev)) 1905 return -EBUSY; 1906 1907 if (!rdev->ops->set_wds_peer) 1908 return -EOPNOTSUPP; 1909 1910 if (wdev->iftype != NL80211_IFTYPE_WDS) 1911 return -EOPNOTSUPP; 1912 1913 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]); 1914 return rdev_set_wds_peer(rdev, dev, bssid); 1915 } 1916 1917 1918 static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info) 1919 { 1920 struct cfg80211_registered_device *rdev; 1921 struct net_device *netdev = NULL; 1922 struct wireless_dev *wdev; 1923 int result = 0, rem_txq_params = 0; 1924 struct nlattr *nl_txq_params; 1925 u32 changed; 1926 u8 retry_short = 0, retry_long = 0; 1927 u32 frag_threshold = 0, rts_threshold = 0; 1928 u8 coverage_class = 0; 1929 1930 ASSERT_RTNL(); 1931 1932 /* 1933 * Try to find the wiphy and netdev. Normally this 1934 * function shouldn't need the netdev, but this is 1935 * done for backward compatibility -- previously 1936 * setting the channel was done per wiphy, but now 1937 * it is per netdev. Previous userland like hostapd 1938 * also passed a netdev to set_wiphy, so that it is 1939 * possible to let that go to the right netdev! 1940 */ 1941 1942 if (info->attrs[NL80211_ATTR_IFINDEX]) { 1943 int ifindex = nla_get_u32(info->attrs[NL80211_ATTR_IFINDEX]); 1944 1945 netdev = dev_get_by_index(genl_info_net(info), ifindex); 1946 if (netdev && netdev->ieee80211_ptr) 1947 rdev = wiphy_to_dev(netdev->ieee80211_ptr->wiphy); 1948 else 1949 netdev = NULL; 1950 } 1951 1952 if (!netdev) { 1953 rdev = __cfg80211_rdev_from_attrs(genl_info_net(info), 1954 info->attrs); 1955 if (IS_ERR(rdev)) 1956 return PTR_ERR(rdev); 1957 wdev = NULL; 1958 netdev = NULL; 1959 result = 0; 1960 } else 1961 wdev = netdev->ieee80211_ptr; 1962 1963 /* 1964 * end workaround code, by now the rdev is available 1965 * and locked, and wdev may or may not be NULL. 1966 */ 1967 1968 if (info->attrs[NL80211_ATTR_WIPHY_NAME]) 1969 result = cfg80211_dev_rename( 1970 rdev, nla_data(info->attrs[NL80211_ATTR_WIPHY_NAME])); 1971 1972 if (result) 1973 goto bad_res; 1974 1975 if (info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS]) { 1976 struct ieee80211_txq_params txq_params; 1977 struct nlattr *tb[NL80211_TXQ_ATTR_MAX + 1]; 1978 1979 if (!rdev->ops->set_txq_params) { 1980 result = -EOPNOTSUPP; 1981 goto bad_res; 1982 } 1983 1984 if (!netdev) { 1985 result = -EINVAL; 1986 goto bad_res; 1987 } 1988 1989 if (netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP && 1990 netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) { 1991 result = -EINVAL; 1992 goto bad_res; 1993 } 1994 1995 if (!netif_running(netdev)) { 1996 result = -ENETDOWN; 1997 goto bad_res; 1998 } 1999 2000 nla_for_each_nested(nl_txq_params, 2001 info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS], 2002 rem_txq_params) { 2003 nla_parse(tb, NL80211_TXQ_ATTR_MAX, 2004 nla_data(nl_txq_params), 2005 nla_len(nl_txq_params), 2006 txq_params_policy); 2007 result = parse_txq_params(tb, &txq_params); 2008 if (result) 2009 goto bad_res; 2010 2011 result = rdev_set_txq_params(rdev, netdev, 2012 &txq_params); 2013 if (result) 2014 goto bad_res; 2015 } 2016 } 2017 2018 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) { 2019 result = __nl80211_set_channel(rdev, 2020 nl80211_can_set_dev_channel(wdev) ? wdev : NULL, 2021 info); 2022 if (result) 2023 goto bad_res; 2024 } 2025 2026 if (info->attrs[NL80211_ATTR_WIPHY_TX_POWER_SETTING]) { 2027 struct wireless_dev *txp_wdev = wdev; 2028 enum nl80211_tx_power_setting type; 2029 int idx, mbm = 0; 2030 2031 if (!(rdev->wiphy.features & NL80211_FEATURE_VIF_TXPOWER)) 2032 txp_wdev = NULL; 2033 2034 if (!rdev->ops->set_tx_power) { 2035 result = -EOPNOTSUPP; 2036 goto bad_res; 2037 } 2038 2039 idx = NL80211_ATTR_WIPHY_TX_POWER_SETTING; 2040 type = nla_get_u32(info->attrs[idx]); 2041 2042 if (!info->attrs[NL80211_ATTR_WIPHY_TX_POWER_LEVEL] && 2043 (type != NL80211_TX_POWER_AUTOMATIC)) { 2044 result = -EINVAL; 2045 goto bad_res; 2046 } 2047 2048 if (type != NL80211_TX_POWER_AUTOMATIC) { 2049 idx = NL80211_ATTR_WIPHY_TX_POWER_LEVEL; 2050 mbm = nla_get_u32(info->attrs[idx]); 2051 } 2052 2053 result = rdev_set_tx_power(rdev, txp_wdev, type, mbm); 2054 if (result) 2055 goto bad_res; 2056 } 2057 2058 if (info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX] && 2059 info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]) { 2060 u32 tx_ant, rx_ant; 2061 if ((!rdev->wiphy.available_antennas_tx && 2062 !rdev->wiphy.available_antennas_rx) || 2063 !rdev->ops->set_antenna) { 2064 result = -EOPNOTSUPP; 2065 goto bad_res; 2066 } 2067 2068 tx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX]); 2069 rx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]); 2070 2071 /* reject antenna configurations which don't match the 2072 * available antenna masks, except for the "all" mask */ 2073 if ((~tx_ant && (tx_ant & ~rdev->wiphy.available_antennas_tx)) || 2074 (~rx_ant && (rx_ant & ~rdev->wiphy.available_antennas_rx))) { 2075 result = -EINVAL; 2076 goto bad_res; 2077 } 2078 2079 tx_ant = tx_ant & rdev->wiphy.available_antennas_tx; 2080 rx_ant = rx_ant & rdev->wiphy.available_antennas_rx; 2081 2082 result = rdev_set_antenna(rdev, tx_ant, rx_ant); 2083 if (result) 2084 goto bad_res; 2085 } 2086 2087 changed = 0; 2088 2089 if (info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]) { 2090 retry_short = nla_get_u8( 2091 info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]); 2092 if (retry_short == 0) { 2093 result = -EINVAL; 2094 goto bad_res; 2095 } 2096 changed |= WIPHY_PARAM_RETRY_SHORT; 2097 } 2098 2099 if (info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]) { 2100 retry_long = nla_get_u8( 2101 info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]); 2102 if (retry_long == 0) { 2103 result = -EINVAL; 2104 goto bad_res; 2105 } 2106 changed |= WIPHY_PARAM_RETRY_LONG; 2107 } 2108 2109 if (info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]) { 2110 frag_threshold = nla_get_u32( 2111 info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]); 2112 if (frag_threshold < 256) { 2113 result = -EINVAL; 2114 goto bad_res; 2115 } 2116 if (frag_threshold != (u32) -1) { 2117 /* 2118 * Fragments (apart from the last one) are required to 2119 * have even length. Make the fragmentation code 2120 * simpler by stripping LSB should someone try to use 2121 * odd threshold value. 2122 */ 2123 frag_threshold &= ~0x1; 2124 } 2125 changed |= WIPHY_PARAM_FRAG_THRESHOLD; 2126 } 2127 2128 if (info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]) { 2129 rts_threshold = nla_get_u32( 2130 info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]); 2131 changed |= WIPHY_PARAM_RTS_THRESHOLD; 2132 } 2133 2134 if (info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]) { 2135 coverage_class = nla_get_u8( 2136 info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]); 2137 changed |= WIPHY_PARAM_COVERAGE_CLASS; 2138 } 2139 2140 if (changed) { 2141 u8 old_retry_short, old_retry_long; 2142 u32 old_frag_threshold, old_rts_threshold; 2143 u8 old_coverage_class; 2144 2145 if (!rdev->ops->set_wiphy_params) { 2146 result = -EOPNOTSUPP; 2147 goto bad_res; 2148 } 2149 2150 old_retry_short = rdev->wiphy.retry_short; 2151 old_retry_long = rdev->wiphy.retry_long; 2152 old_frag_threshold = rdev->wiphy.frag_threshold; 2153 old_rts_threshold = rdev->wiphy.rts_threshold; 2154 old_coverage_class = rdev->wiphy.coverage_class; 2155 2156 if (changed & WIPHY_PARAM_RETRY_SHORT) 2157 rdev->wiphy.retry_short = retry_short; 2158 if (changed & WIPHY_PARAM_RETRY_LONG) 2159 rdev->wiphy.retry_long = retry_long; 2160 if (changed & WIPHY_PARAM_FRAG_THRESHOLD) 2161 rdev->wiphy.frag_threshold = frag_threshold; 2162 if (changed & WIPHY_PARAM_RTS_THRESHOLD) 2163 rdev->wiphy.rts_threshold = rts_threshold; 2164 if (changed & WIPHY_PARAM_COVERAGE_CLASS) 2165 rdev->wiphy.coverage_class = coverage_class; 2166 2167 result = rdev_set_wiphy_params(rdev, changed); 2168 if (result) { 2169 rdev->wiphy.retry_short = old_retry_short; 2170 rdev->wiphy.retry_long = old_retry_long; 2171 rdev->wiphy.frag_threshold = old_frag_threshold; 2172 rdev->wiphy.rts_threshold = old_rts_threshold; 2173 rdev->wiphy.coverage_class = old_coverage_class; 2174 } 2175 } 2176 2177 bad_res: 2178 if (netdev) 2179 dev_put(netdev); 2180 return result; 2181 } 2182 2183 static inline u64 wdev_id(struct wireless_dev *wdev) 2184 { 2185 return (u64)wdev->identifier | 2186 ((u64)wiphy_to_dev(wdev->wiphy)->wiphy_idx << 32); 2187 } 2188 2189 static int nl80211_send_chandef(struct sk_buff *msg, 2190 struct cfg80211_chan_def *chandef) 2191 { 2192 WARN_ON(!cfg80211_chandef_valid(chandef)); 2193 2194 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, 2195 chandef->chan->center_freq)) 2196 return -ENOBUFS; 2197 switch (chandef->width) { 2198 case NL80211_CHAN_WIDTH_20_NOHT: 2199 case NL80211_CHAN_WIDTH_20: 2200 case NL80211_CHAN_WIDTH_40: 2201 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE, 2202 cfg80211_get_chandef_type(chandef))) 2203 return -ENOBUFS; 2204 break; 2205 default: 2206 break; 2207 } 2208 if (nla_put_u32(msg, NL80211_ATTR_CHANNEL_WIDTH, chandef->width)) 2209 return -ENOBUFS; 2210 if (nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ1, chandef->center_freq1)) 2211 return -ENOBUFS; 2212 if (chandef->center_freq2 && 2213 nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ2, chandef->center_freq2)) 2214 return -ENOBUFS; 2215 return 0; 2216 } 2217 2218 static int nl80211_send_iface(struct sk_buff *msg, u32 portid, u32 seq, int flags, 2219 struct cfg80211_registered_device *rdev, 2220 struct wireless_dev *wdev) 2221 { 2222 struct net_device *dev = wdev->netdev; 2223 void *hdr; 2224 2225 hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_INTERFACE); 2226 if (!hdr) 2227 return -1; 2228 2229 if (dev && 2230 (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) || 2231 nla_put_string(msg, NL80211_ATTR_IFNAME, dev->name))) 2232 goto nla_put_failure; 2233 2234 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 2235 nla_put_u32(msg, NL80211_ATTR_IFTYPE, wdev->iftype) || 2236 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) || 2237 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, wdev_address(wdev)) || 2238 nla_put_u32(msg, NL80211_ATTR_GENERATION, 2239 rdev->devlist_generation ^ 2240 (cfg80211_rdev_list_generation << 2))) 2241 goto nla_put_failure; 2242 2243 if (rdev->ops->get_channel) { 2244 int ret; 2245 struct cfg80211_chan_def chandef; 2246 2247 ret = rdev_get_channel(rdev, wdev, &chandef); 2248 if (ret == 0) { 2249 if (nl80211_send_chandef(msg, &chandef)) 2250 goto nla_put_failure; 2251 } 2252 } 2253 2254 if (wdev->ssid_len) { 2255 if (nla_put(msg, NL80211_ATTR_SSID, wdev->ssid_len, wdev->ssid)) 2256 goto nla_put_failure; 2257 } 2258 2259 return genlmsg_end(msg, hdr); 2260 2261 nla_put_failure: 2262 genlmsg_cancel(msg, hdr); 2263 return -EMSGSIZE; 2264 } 2265 2266 static int nl80211_dump_interface(struct sk_buff *skb, struct netlink_callback *cb) 2267 { 2268 int wp_idx = 0; 2269 int if_idx = 0; 2270 int wp_start = cb->args[0]; 2271 int if_start = cb->args[1]; 2272 struct cfg80211_registered_device *rdev; 2273 struct wireless_dev *wdev; 2274 2275 rtnl_lock(); 2276 list_for_each_entry(rdev, &cfg80211_rdev_list, list) { 2277 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk))) 2278 continue; 2279 if (wp_idx < wp_start) { 2280 wp_idx++; 2281 continue; 2282 } 2283 if_idx = 0; 2284 2285 list_for_each_entry(wdev, &rdev->wdev_list, list) { 2286 if (if_idx < if_start) { 2287 if_idx++; 2288 continue; 2289 } 2290 if (nl80211_send_iface(skb, NETLINK_CB(cb->skb).portid, 2291 cb->nlh->nlmsg_seq, NLM_F_MULTI, 2292 rdev, wdev) < 0) { 2293 goto out; 2294 } 2295 if_idx++; 2296 } 2297 2298 wp_idx++; 2299 } 2300 out: 2301 rtnl_unlock(); 2302 2303 cb->args[0] = wp_idx; 2304 cb->args[1] = if_idx; 2305 2306 return skb->len; 2307 } 2308 2309 static int nl80211_get_interface(struct sk_buff *skb, struct genl_info *info) 2310 { 2311 struct sk_buff *msg; 2312 struct cfg80211_registered_device *dev = info->user_ptr[0]; 2313 struct wireless_dev *wdev = info->user_ptr[1]; 2314 2315 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 2316 if (!msg) 2317 return -ENOMEM; 2318 2319 if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0, 2320 dev, wdev) < 0) { 2321 nlmsg_free(msg); 2322 return -ENOBUFS; 2323 } 2324 2325 return genlmsg_reply(msg, info); 2326 } 2327 2328 static const struct nla_policy mntr_flags_policy[NL80211_MNTR_FLAG_MAX + 1] = { 2329 [NL80211_MNTR_FLAG_FCSFAIL] = { .type = NLA_FLAG }, 2330 [NL80211_MNTR_FLAG_PLCPFAIL] = { .type = NLA_FLAG }, 2331 [NL80211_MNTR_FLAG_CONTROL] = { .type = NLA_FLAG }, 2332 [NL80211_MNTR_FLAG_OTHER_BSS] = { .type = NLA_FLAG }, 2333 [NL80211_MNTR_FLAG_COOK_FRAMES] = { .type = NLA_FLAG }, 2334 [NL80211_MNTR_FLAG_ACTIVE] = { .type = NLA_FLAG }, 2335 }; 2336 2337 static int parse_monitor_flags(struct nlattr *nla, u32 *mntrflags) 2338 { 2339 struct nlattr *flags[NL80211_MNTR_FLAG_MAX + 1]; 2340 int flag; 2341 2342 *mntrflags = 0; 2343 2344 if (!nla) 2345 return -EINVAL; 2346 2347 if (nla_parse_nested(flags, NL80211_MNTR_FLAG_MAX, 2348 nla, mntr_flags_policy)) 2349 return -EINVAL; 2350 2351 for (flag = 1; flag <= NL80211_MNTR_FLAG_MAX; flag++) 2352 if (flags[flag]) 2353 *mntrflags |= (1<<flag); 2354 2355 return 0; 2356 } 2357 2358 static int nl80211_valid_4addr(struct cfg80211_registered_device *rdev, 2359 struct net_device *netdev, u8 use_4addr, 2360 enum nl80211_iftype iftype) 2361 { 2362 if (!use_4addr) { 2363 if (netdev && (netdev->priv_flags & IFF_BRIDGE_PORT)) 2364 return -EBUSY; 2365 return 0; 2366 } 2367 2368 switch (iftype) { 2369 case NL80211_IFTYPE_AP_VLAN: 2370 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_AP) 2371 return 0; 2372 break; 2373 case NL80211_IFTYPE_STATION: 2374 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_STATION) 2375 return 0; 2376 break; 2377 default: 2378 break; 2379 } 2380 2381 return -EOPNOTSUPP; 2382 } 2383 2384 static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info) 2385 { 2386 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 2387 struct vif_params params; 2388 int err; 2389 enum nl80211_iftype otype, ntype; 2390 struct net_device *dev = info->user_ptr[1]; 2391 u32 _flags, *flags = NULL; 2392 bool change = false; 2393 2394 memset(¶ms, 0, sizeof(params)); 2395 2396 otype = ntype = dev->ieee80211_ptr->iftype; 2397 2398 if (info->attrs[NL80211_ATTR_IFTYPE]) { 2399 ntype = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]); 2400 if (otype != ntype) 2401 change = true; 2402 if (ntype > NL80211_IFTYPE_MAX) 2403 return -EINVAL; 2404 } 2405 2406 if (info->attrs[NL80211_ATTR_MESH_ID]) { 2407 struct wireless_dev *wdev = dev->ieee80211_ptr; 2408 2409 if (ntype != NL80211_IFTYPE_MESH_POINT) 2410 return -EINVAL; 2411 if (netif_running(dev)) 2412 return -EBUSY; 2413 2414 wdev_lock(wdev); 2415 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN != 2416 IEEE80211_MAX_MESH_ID_LEN); 2417 wdev->mesh_id_up_len = 2418 nla_len(info->attrs[NL80211_ATTR_MESH_ID]); 2419 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]), 2420 wdev->mesh_id_up_len); 2421 wdev_unlock(wdev); 2422 } 2423 2424 if (info->attrs[NL80211_ATTR_4ADDR]) { 2425 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]); 2426 change = true; 2427 err = nl80211_valid_4addr(rdev, dev, params.use_4addr, ntype); 2428 if (err) 2429 return err; 2430 } else { 2431 params.use_4addr = -1; 2432 } 2433 2434 if (info->attrs[NL80211_ATTR_MNTR_FLAGS]) { 2435 if (ntype != NL80211_IFTYPE_MONITOR) 2436 return -EINVAL; 2437 err = parse_monitor_flags(info->attrs[NL80211_ATTR_MNTR_FLAGS], 2438 &_flags); 2439 if (err) 2440 return err; 2441 2442 flags = &_flags; 2443 change = true; 2444 } 2445 2446 if (flags && (*flags & MONITOR_FLAG_ACTIVE) && 2447 !(rdev->wiphy.features & NL80211_FEATURE_ACTIVE_MONITOR)) 2448 return -EOPNOTSUPP; 2449 2450 if (change) 2451 err = cfg80211_change_iface(rdev, dev, ntype, flags, ¶ms); 2452 else 2453 err = 0; 2454 2455 if (!err && params.use_4addr != -1) 2456 dev->ieee80211_ptr->use_4addr = params.use_4addr; 2457 2458 return err; 2459 } 2460 2461 static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info) 2462 { 2463 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 2464 struct vif_params params; 2465 struct wireless_dev *wdev; 2466 struct sk_buff *msg; 2467 int err; 2468 enum nl80211_iftype type = NL80211_IFTYPE_UNSPECIFIED; 2469 u32 flags; 2470 2471 memset(¶ms, 0, sizeof(params)); 2472 2473 if (!info->attrs[NL80211_ATTR_IFNAME]) 2474 return -EINVAL; 2475 2476 if (info->attrs[NL80211_ATTR_IFTYPE]) { 2477 type = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]); 2478 if (type > NL80211_IFTYPE_MAX) 2479 return -EINVAL; 2480 } 2481 2482 if (!rdev->ops->add_virtual_intf || 2483 !(rdev->wiphy.interface_modes & (1 << type))) 2484 return -EOPNOTSUPP; 2485 2486 if (type == NL80211_IFTYPE_P2P_DEVICE && info->attrs[NL80211_ATTR_MAC]) { 2487 nla_memcpy(params.macaddr, info->attrs[NL80211_ATTR_MAC], 2488 ETH_ALEN); 2489 if (!is_valid_ether_addr(params.macaddr)) 2490 return -EADDRNOTAVAIL; 2491 } 2492 2493 if (info->attrs[NL80211_ATTR_4ADDR]) { 2494 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]); 2495 err = nl80211_valid_4addr(rdev, NULL, params.use_4addr, type); 2496 if (err) 2497 return err; 2498 } 2499 2500 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 2501 if (!msg) 2502 return -ENOMEM; 2503 2504 err = parse_monitor_flags(type == NL80211_IFTYPE_MONITOR ? 2505 info->attrs[NL80211_ATTR_MNTR_FLAGS] : NULL, 2506 &flags); 2507 2508 if (!err && (flags & MONITOR_FLAG_ACTIVE) && 2509 !(rdev->wiphy.features & NL80211_FEATURE_ACTIVE_MONITOR)) 2510 return -EOPNOTSUPP; 2511 2512 wdev = rdev_add_virtual_intf(rdev, 2513 nla_data(info->attrs[NL80211_ATTR_IFNAME]), 2514 type, err ? NULL : &flags, ¶ms); 2515 if (IS_ERR(wdev)) { 2516 nlmsg_free(msg); 2517 return PTR_ERR(wdev); 2518 } 2519 2520 switch (type) { 2521 case NL80211_IFTYPE_MESH_POINT: 2522 if (!info->attrs[NL80211_ATTR_MESH_ID]) 2523 break; 2524 wdev_lock(wdev); 2525 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN != 2526 IEEE80211_MAX_MESH_ID_LEN); 2527 wdev->mesh_id_up_len = 2528 nla_len(info->attrs[NL80211_ATTR_MESH_ID]); 2529 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]), 2530 wdev->mesh_id_up_len); 2531 wdev_unlock(wdev); 2532 break; 2533 case NL80211_IFTYPE_P2P_DEVICE: 2534 /* 2535 * P2P Device doesn't have a netdev, so doesn't go 2536 * through the netdev notifier and must be added here 2537 */ 2538 mutex_init(&wdev->mtx); 2539 INIT_LIST_HEAD(&wdev->event_list); 2540 spin_lock_init(&wdev->event_lock); 2541 INIT_LIST_HEAD(&wdev->mgmt_registrations); 2542 spin_lock_init(&wdev->mgmt_registrations_lock); 2543 2544 wdev->identifier = ++rdev->wdev_id; 2545 list_add_rcu(&wdev->list, &rdev->wdev_list); 2546 rdev->devlist_generation++; 2547 break; 2548 default: 2549 break; 2550 } 2551 2552 if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0, 2553 rdev, wdev) < 0) { 2554 nlmsg_free(msg); 2555 return -ENOBUFS; 2556 } 2557 2558 return genlmsg_reply(msg, info); 2559 } 2560 2561 static int nl80211_del_interface(struct sk_buff *skb, struct genl_info *info) 2562 { 2563 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 2564 struct wireless_dev *wdev = info->user_ptr[1]; 2565 2566 if (!rdev->ops->del_virtual_intf) 2567 return -EOPNOTSUPP; 2568 2569 /* 2570 * If we remove a wireless device without a netdev then clear 2571 * user_ptr[1] so that nl80211_post_doit won't dereference it 2572 * to check if it needs to do dev_put(). Otherwise it crashes 2573 * since the wdev has been freed, unlike with a netdev where 2574 * we need the dev_put() for the netdev to really be freed. 2575 */ 2576 if (!wdev->netdev) 2577 info->user_ptr[1] = NULL; 2578 2579 return rdev_del_virtual_intf(rdev, wdev); 2580 } 2581 2582 static int nl80211_set_noack_map(struct sk_buff *skb, struct genl_info *info) 2583 { 2584 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 2585 struct net_device *dev = info->user_ptr[1]; 2586 u16 noack_map; 2587 2588 if (!info->attrs[NL80211_ATTR_NOACK_MAP]) 2589 return -EINVAL; 2590 2591 if (!rdev->ops->set_noack_map) 2592 return -EOPNOTSUPP; 2593 2594 noack_map = nla_get_u16(info->attrs[NL80211_ATTR_NOACK_MAP]); 2595 2596 return rdev_set_noack_map(rdev, dev, noack_map); 2597 } 2598 2599 struct get_key_cookie { 2600 struct sk_buff *msg; 2601 int error; 2602 int idx; 2603 }; 2604 2605 static void get_key_callback(void *c, struct key_params *params) 2606 { 2607 struct nlattr *key; 2608 struct get_key_cookie *cookie = c; 2609 2610 if ((params->key && 2611 nla_put(cookie->msg, NL80211_ATTR_KEY_DATA, 2612 params->key_len, params->key)) || 2613 (params->seq && 2614 nla_put(cookie->msg, NL80211_ATTR_KEY_SEQ, 2615 params->seq_len, params->seq)) || 2616 (params->cipher && 2617 nla_put_u32(cookie->msg, NL80211_ATTR_KEY_CIPHER, 2618 params->cipher))) 2619 goto nla_put_failure; 2620 2621 key = nla_nest_start(cookie->msg, NL80211_ATTR_KEY); 2622 if (!key) 2623 goto nla_put_failure; 2624 2625 if ((params->key && 2626 nla_put(cookie->msg, NL80211_KEY_DATA, 2627 params->key_len, params->key)) || 2628 (params->seq && 2629 nla_put(cookie->msg, NL80211_KEY_SEQ, 2630 params->seq_len, params->seq)) || 2631 (params->cipher && 2632 nla_put_u32(cookie->msg, NL80211_KEY_CIPHER, 2633 params->cipher))) 2634 goto nla_put_failure; 2635 2636 if (nla_put_u8(cookie->msg, NL80211_ATTR_KEY_IDX, cookie->idx)) 2637 goto nla_put_failure; 2638 2639 nla_nest_end(cookie->msg, key); 2640 2641 return; 2642 nla_put_failure: 2643 cookie->error = 1; 2644 } 2645 2646 static int nl80211_get_key(struct sk_buff *skb, struct genl_info *info) 2647 { 2648 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 2649 int err; 2650 struct net_device *dev = info->user_ptr[1]; 2651 u8 key_idx = 0; 2652 const u8 *mac_addr = NULL; 2653 bool pairwise; 2654 struct get_key_cookie cookie = { 2655 .error = 0, 2656 }; 2657 void *hdr; 2658 struct sk_buff *msg; 2659 2660 if (info->attrs[NL80211_ATTR_KEY_IDX]) 2661 key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]); 2662 2663 if (key_idx > 5) 2664 return -EINVAL; 2665 2666 if (info->attrs[NL80211_ATTR_MAC]) 2667 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]); 2668 2669 pairwise = !!mac_addr; 2670 if (info->attrs[NL80211_ATTR_KEY_TYPE]) { 2671 u32 kt = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]); 2672 if (kt >= NUM_NL80211_KEYTYPES) 2673 return -EINVAL; 2674 if (kt != NL80211_KEYTYPE_GROUP && 2675 kt != NL80211_KEYTYPE_PAIRWISE) 2676 return -EINVAL; 2677 pairwise = kt == NL80211_KEYTYPE_PAIRWISE; 2678 } 2679 2680 if (!rdev->ops->get_key) 2681 return -EOPNOTSUPP; 2682 2683 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 2684 if (!msg) 2685 return -ENOMEM; 2686 2687 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0, 2688 NL80211_CMD_NEW_KEY); 2689 if (!hdr) 2690 return -ENOBUFS; 2691 2692 cookie.msg = msg; 2693 cookie.idx = key_idx; 2694 2695 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) || 2696 nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_idx)) 2697 goto nla_put_failure; 2698 if (mac_addr && 2699 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr)) 2700 goto nla_put_failure; 2701 2702 if (pairwise && mac_addr && 2703 !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN)) 2704 return -ENOENT; 2705 2706 err = rdev_get_key(rdev, dev, key_idx, pairwise, mac_addr, &cookie, 2707 get_key_callback); 2708 2709 if (err) 2710 goto free_msg; 2711 2712 if (cookie.error) 2713 goto nla_put_failure; 2714 2715 genlmsg_end(msg, hdr); 2716 return genlmsg_reply(msg, info); 2717 2718 nla_put_failure: 2719 err = -ENOBUFS; 2720 free_msg: 2721 nlmsg_free(msg); 2722 return err; 2723 } 2724 2725 static int nl80211_set_key(struct sk_buff *skb, struct genl_info *info) 2726 { 2727 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 2728 struct key_parse key; 2729 int err; 2730 struct net_device *dev = info->user_ptr[1]; 2731 2732 err = nl80211_parse_key(info, &key); 2733 if (err) 2734 return err; 2735 2736 if (key.idx < 0) 2737 return -EINVAL; 2738 2739 /* only support setting default key */ 2740 if (!key.def && !key.defmgmt) 2741 return -EINVAL; 2742 2743 wdev_lock(dev->ieee80211_ptr); 2744 2745 if (key.def) { 2746 if (!rdev->ops->set_default_key) { 2747 err = -EOPNOTSUPP; 2748 goto out; 2749 } 2750 2751 err = nl80211_key_allowed(dev->ieee80211_ptr); 2752 if (err) 2753 goto out; 2754 2755 err = rdev_set_default_key(rdev, dev, key.idx, 2756 key.def_uni, key.def_multi); 2757 2758 if (err) 2759 goto out; 2760 2761 #ifdef CONFIG_CFG80211_WEXT 2762 dev->ieee80211_ptr->wext.default_key = key.idx; 2763 #endif 2764 } else { 2765 if (key.def_uni || !key.def_multi) { 2766 err = -EINVAL; 2767 goto out; 2768 } 2769 2770 if (!rdev->ops->set_default_mgmt_key) { 2771 err = -EOPNOTSUPP; 2772 goto out; 2773 } 2774 2775 err = nl80211_key_allowed(dev->ieee80211_ptr); 2776 if (err) 2777 goto out; 2778 2779 err = rdev_set_default_mgmt_key(rdev, dev, key.idx); 2780 if (err) 2781 goto out; 2782 2783 #ifdef CONFIG_CFG80211_WEXT 2784 dev->ieee80211_ptr->wext.default_mgmt_key = key.idx; 2785 #endif 2786 } 2787 2788 out: 2789 wdev_unlock(dev->ieee80211_ptr); 2790 2791 return err; 2792 } 2793 2794 static int nl80211_new_key(struct sk_buff *skb, struct genl_info *info) 2795 { 2796 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 2797 int err; 2798 struct net_device *dev = info->user_ptr[1]; 2799 struct key_parse key; 2800 const u8 *mac_addr = NULL; 2801 2802 err = nl80211_parse_key(info, &key); 2803 if (err) 2804 return err; 2805 2806 if (!key.p.key) 2807 return -EINVAL; 2808 2809 if (info->attrs[NL80211_ATTR_MAC]) 2810 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]); 2811 2812 if (key.type == -1) { 2813 if (mac_addr) 2814 key.type = NL80211_KEYTYPE_PAIRWISE; 2815 else 2816 key.type = NL80211_KEYTYPE_GROUP; 2817 } 2818 2819 /* for now */ 2820 if (key.type != NL80211_KEYTYPE_PAIRWISE && 2821 key.type != NL80211_KEYTYPE_GROUP) 2822 return -EINVAL; 2823 2824 if (!rdev->ops->add_key) 2825 return -EOPNOTSUPP; 2826 2827 if (cfg80211_validate_key_settings(rdev, &key.p, key.idx, 2828 key.type == NL80211_KEYTYPE_PAIRWISE, 2829 mac_addr)) 2830 return -EINVAL; 2831 2832 wdev_lock(dev->ieee80211_ptr); 2833 err = nl80211_key_allowed(dev->ieee80211_ptr); 2834 if (!err) 2835 err = rdev_add_key(rdev, dev, key.idx, 2836 key.type == NL80211_KEYTYPE_PAIRWISE, 2837 mac_addr, &key.p); 2838 wdev_unlock(dev->ieee80211_ptr); 2839 2840 return err; 2841 } 2842 2843 static int nl80211_del_key(struct sk_buff *skb, struct genl_info *info) 2844 { 2845 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 2846 int err; 2847 struct net_device *dev = info->user_ptr[1]; 2848 u8 *mac_addr = NULL; 2849 struct key_parse key; 2850 2851 err = nl80211_parse_key(info, &key); 2852 if (err) 2853 return err; 2854 2855 if (info->attrs[NL80211_ATTR_MAC]) 2856 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]); 2857 2858 if (key.type == -1) { 2859 if (mac_addr) 2860 key.type = NL80211_KEYTYPE_PAIRWISE; 2861 else 2862 key.type = NL80211_KEYTYPE_GROUP; 2863 } 2864 2865 /* for now */ 2866 if (key.type != NL80211_KEYTYPE_PAIRWISE && 2867 key.type != NL80211_KEYTYPE_GROUP) 2868 return -EINVAL; 2869 2870 if (!rdev->ops->del_key) 2871 return -EOPNOTSUPP; 2872 2873 wdev_lock(dev->ieee80211_ptr); 2874 err = nl80211_key_allowed(dev->ieee80211_ptr); 2875 2876 if (key.type == NL80211_KEYTYPE_PAIRWISE && mac_addr && 2877 !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN)) 2878 err = -ENOENT; 2879 2880 if (!err) 2881 err = rdev_del_key(rdev, dev, key.idx, 2882 key.type == NL80211_KEYTYPE_PAIRWISE, 2883 mac_addr); 2884 2885 #ifdef CONFIG_CFG80211_WEXT 2886 if (!err) { 2887 if (key.idx == dev->ieee80211_ptr->wext.default_key) 2888 dev->ieee80211_ptr->wext.default_key = -1; 2889 else if (key.idx == dev->ieee80211_ptr->wext.default_mgmt_key) 2890 dev->ieee80211_ptr->wext.default_mgmt_key = -1; 2891 } 2892 #endif 2893 wdev_unlock(dev->ieee80211_ptr); 2894 2895 return err; 2896 } 2897 2898 /* This function returns an error or the number of nested attributes */ 2899 static int validate_acl_mac_addrs(struct nlattr *nl_attr) 2900 { 2901 struct nlattr *attr; 2902 int n_entries = 0, tmp; 2903 2904 nla_for_each_nested(attr, nl_attr, tmp) { 2905 if (nla_len(attr) != ETH_ALEN) 2906 return -EINVAL; 2907 2908 n_entries++; 2909 } 2910 2911 return n_entries; 2912 } 2913 2914 /* 2915 * This function parses ACL information and allocates memory for ACL data. 2916 * On successful return, the calling function is responsible to free the 2917 * ACL buffer returned by this function. 2918 */ 2919 static struct cfg80211_acl_data *parse_acl_data(struct wiphy *wiphy, 2920 struct genl_info *info) 2921 { 2922 enum nl80211_acl_policy acl_policy; 2923 struct nlattr *attr; 2924 struct cfg80211_acl_data *acl; 2925 int i = 0, n_entries, tmp; 2926 2927 if (!wiphy->max_acl_mac_addrs) 2928 return ERR_PTR(-EOPNOTSUPP); 2929 2930 if (!info->attrs[NL80211_ATTR_ACL_POLICY]) 2931 return ERR_PTR(-EINVAL); 2932 2933 acl_policy = nla_get_u32(info->attrs[NL80211_ATTR_ACL_POLICY]); 2934 if (acl_policy != NL80211_ACL_POLICY_ACCEPT_UNLESS_LISTED && 2935 acl_policy != NL80211_ACL_POLICY_DENY_UNLESS_LISTED) 2936 return ERR_PTR(-EINVAL); 2937 2938 if (!info->attrs[NL80211_ATTR_MAC_ADDRS]) 2939 return ERR_PTR(-EINVAL); 2940 2941 n_entries = validate_acl_mac_addrs(info->attrs[NL80211_ATTR_MAC_ADDRS]); 2942 if (n_entries < 0) 2943 return ERR_PTR(n_entries); 2944 2945 if (n_entries > wiphy->max_acl_mac_addrs) 2946 return ERR_PTR(-ENOTSUPP); 2947 2948 acl = kzalloc(sizeof(*acl) + (sizeof(struct mac_address) * n_entries), 2949 GFP_KERNEL); 2950 if (!acl) 2951 return ERR_PTR(-ENOMEM); 2952 2953 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_MAC_ADDRS], tmp) { 2954 memcpy(acl->mac_addrs[i].addr, nla_data(attr), ETH_ALEN); 2955 i++; 2956 } 2957 2958 acl->n_acl_entries = n_entries; 2959 acl->acl_policy = acl_policy; 2960 2961 return acl; 2962 } 2963 2964 static int nl80211_set_mac_acl(struct sk_buff *skb, struct genl_info *info) 2965 { 2966 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 2967 struct net_device *dev = info->user_ptr[1]; 2968 struct cfg80211_acl_data *acl; 2969 int err; 2970 2971 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP && 2972 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) 2973 return -EOPNOTSUPP; 2974 2975 if (!dev->ieee80211_ptr->beacon_interval) 2976 return -EINVAL; 2977 2978 acl = parse_acl_data(&rdev->wiphy, info); 2979 if (IS_ERR(acl)) 2980 return PTR_ERR(acl); 2981 2982 err = rdev_set_mac_acl(rdev, dev, acl); 2983 2984 kfree(acl); 2985 2986 return err; 2987 } 2988 2989 static int nl80211_parse_beacon(struct nlattr *attrs[], 2990 struct cfg80211_beacon_data *bcn) 2991 { 2992 bool haveinfo = false; 2993 2994 if (!is_valid_ie_attr(attrs[NL80211_ATTR_BEACON_TAIL]) || 2995 !is_valid_ie_attr(attrs[NL80211_ATTR_IE]) || 2996 !is_valid_ie_attr(attrs[NL80211_ATTR_IE_PROBE_RESP]) || 2997 !is_valid_ie_attr(attrs[NL80211_ATTR_IE_ASSOC_RESP])) 2998 return -EINVAL; 2999 3000 memset(bcn, 0, sizeof(*bcn)); 3001 3002 if (attrs[NL80211_ATTR_BEACON_HEAD]) { 3003 bcn->head = nla_data(attrs[NL80211_ATTR_BEACON_HEAD]); 3004 bcn->head_len = nla_len(attrs[NL80211_ATTR_BEACON_HEAD]); 3005 if (!bcn->head_len) 3006 return -EINVAL; 3007 haveinfo = true; 3008 } 3009 3010 if (attrs[NL80211_ATTR_BEACON_TAIL]) { 3011 bcn->tail = nla_data(attrs[NL80211_ATTR_BEACON_TAIL]); 3012 bcn->tail_len = nla_len(attrs[NL80211_ATTR_BEACON_TAIL]); 3013 haveinfo = true; 3014 } 3015 3016 if (!haveinfo) 3017 return -EINVAL; 3018 3019 if (attrs[NL80211_ATTR_IE]) { 3020 bcn->beacon_ies = nla_data(attrs[NL80211_ATTR_IE]); 3021 bcn->beacon_ies_len = nla_len(attrs[NL80211_ATTR_IE]); 3022 } 3023 3024 if (attrs[NL80211_ATTR_IE_PROBE_RESP]) { 3025 bcn->proberesp_ies = 3026 nla_data(attrs[NL80211_ATTR_IE_PROBE_RESP]); 3027 bcn->proberesp_ies_len = 3028 nla_len(attrs[NL80211_ATTR_IE_PROBE_RESP]); 3029 } 3030 3031 if (attrs[NL80211_ATTR_IE_ASSOC_RESP]) { 3032 bcn->assocresp_ies = 3033 nla_data(attrs[NL80211_ATTR_IE_ASSOC_RESP]); 3034 bcn->assocresp_ies_len = 3035 nla_len(attrs[NL80211_ATTR_IE_ASSOC_RESP]); 3036 } 3037 3038 if (attrs[NL80211_ATTR_PROBE_RESP]) { 3039 bcn->probe_resp = nla_data(attrs[NL80211_ATTR_PROBE_RESP]); 3040 bcn->probe_resp_len = nla_len(attrs[NL80211_ATTR_PROBE_RESP]); 3041 } 3042 3043 return 0; 3044 } 3045 3046 static bool nl80211_get_ap_channel(struct cfg80211_registered_device *rdev, 3047 struct cfg80211_ap_settings *params) 3048 { 3049 struct wireless_dev *wdev; 3050 bool ret = false; 3051 3052 list_for_each_entry(wdev, &rdev->wdev_list, list) { 3053 if (wdev->iftype != NL80211_IFTYPE_AP && 3054 wdev->iftype != NL80211_IFTYPE_P2P_GO) 3055 continue; 3056 3057 if (!wdev->preset_chandef.chan) 3058 continue; 3059 3060 params->chandef = wdev->preset_chandef; 3061 ret = true; 3062 break; 3063 } 3064 3065 return ret; 3066 } 3067 3068 static bool nl80211_valid_auth_type(struct cfg80211_registered_device *rdev, 3069 enum nl80211_auth_type auth_type, 3070 enum nl80211_commands cmd) 3071 { 3072 if (auth_type > NL80211_AUTHTYPE_MAX) 3073 return false; 3074 3075 switch (cmd) { 3076 case NL80211_CMD_AUTHENTICATE: 3077 if (!(rdev->wiphy.features & NL80211_FEATURE_SAE) && 3078 auth_type == NL80211_AUTHTYPE_SAE) 3079 return false; 3080 return true; 3081 case NL80211_CMD_CONNECT: 3082 case NL80211_CMD_START_AP: 3083 /* SAE not supported yet */ 3084 if (auth_type == NL80211_AUTHTYPE_SAE) 3085 return false; 3086 return true; 3087 default: 3088 return false; 3089 } 3090 } 3091 3092 static int nl80211_start_ap(struct sk_buff *skb, struct genl_info *info) 3093 { 3094 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 3095 struct net_device *dev = info->user_ptr[1]; 3096 struct wireless_dev *wdev = dev->ieee80211_ptr; 3097 struct cfg80211_ap_settings params; 3098 int err; 3099 u8 radar_detect_width = 0; 3100 3101 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP && 3102 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) 3103 return -EOPNOTSUPP; 3104 3105 if (!rdev->ops->start_ap) 3106 return -EOPNOTSUPP; 3107 3108 if (wdev->beacon_interval) 3109 return -EALREADY; 3110 3111 memset(¶ms, 0, sizeof(params)); 3112 3113 /* these are required for START_AP */ 3114 if (!info->attrs[NL80211_ATTR_BEACON_INTERVAL] || 3115 !info->attrs[NL80211_ATTR_DTIM_PERIOD] || 3116 !info->attrs[NL80211_ATTR_BEACON_HEAD]) 3117 return -EINVAL; 3118 3119 err = nl80211_parse_beacon(info->attrs, ¶ms.beacon); 3120 if (err) 3121 return err; 3122 3123 params.beacon_interval = 3124 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]); 3125 params.dtim_period = 3126 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]); 3127 3128 err = cfg80211_validate_beacon_int(rdev, params.beacon_interval); 3129 if (err) 3130 return err; 3131 3132 /* 3133 * In theory, some of these attributes should be required here 3134 * but since they were not used when the command was originally 3135 * added, keep them optional for old user space programs to let 3136 * them continue to work with drivers that do not need the 3137 * additional information -- drivers must check! 3138 */ 3139 if (info->attrs[NL80211_ATTR_SSID]) { 3140 params.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]); 3141 params.ssid_len = 3142 nla_len(info->attrs[NL80211_ATTR_SSID]); 3143 if (params.ssid_len == 0 || 3144 params.ssid_len > IEEE80211_MAX_SSID_LEN) 3145 return -EINVAL; 3146 } 3147 3148 if (info->attrs[NL80211_ATTR_HIDDEN_SSID]) { 3149 params.hidden_ssid = nla_get_u32( 3150 info->attrs[NL80211_ATTR_HIDDEN_SSID]); 3151 if (params.hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE && 3152 params.hidden_ssid != NL80211_HIDDEN_SSID_ZERO_LEN && 3153 params.hidden_ssid != NL80211_HIDDEN_SSID_ZERO_CONTENTS) 3154 return -EINVAL; 3155 } 3156 3157 params.privacy = !!info->attrs[NL80211_ATTR_PRIVACY]; 3158 3159 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) { 3160 params.auth_type = nla_get_u32( 3161 info->attrs[NL80211_ATTR_AUTH_TYPE]); 3162 if (!nl80211_valid_auth_type(rdev, params.auth_type, 3163 NL80211_CMD_START_AP)) 3164 return -EINVAL; 3165 } else 3166 params.auth_type = NL80211_AUTHTYPE_AUTOMATIC; 3167 3168 err = nl80211_crypto_settings(rdev, info, ¶ms.crypto, 3169 NL80211_MAX_NR_CIPHER_SUITES); 3170 if (err) 3171 return err; 3172 3173 if (info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]) { 3174 if (!(rdev->wiphy.features & NL80211_FEATURE_INACTIVITY_TIMER)) 3175 return -EOPNOTSUPP; 3176 params.inactivity_timeout = nla_get_u16( 3177 info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]); 3178 } 3179 3180 if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) { 3181 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) 3182 return -EINVAL; 3183 params.p2p_ctwindow = 3184 nla_get_u8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]); 3185 if (params.p2p_ctwindow > 127) 3186 return -EINVAL; 3187 if (params.p2p_ctwindow != 0 && 3188 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN)) 3189 return -EINVAL; 3190 } 3191 3192 if (info->attrs[NL80211_ATTR_P2P_OPPPS]) { 3193 u8 tmp; 3194 3195 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) 3196 return -EINVAL; 3197 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]); 3198 if (tmp > 1) 3199 return -EINVAL; 3200 params.p2p_opp_ps = tmp; 3201 if (params.p2p_opp_ps != 0 && 3202 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS)) 3203 return -EINVAL; 3204 } 3205 3206 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) { 3207 err = nl80211_parse_chandef(rdev, info, ¶ms.chandef); 3208 if (err) 3209 return err; 3210 } else if (wdev->preset_chandef.chan) { 3211 params.chandef = wdev->preset_chandef; 3212 } else if (!nl80211_get_ap_channel(rdev, ¶ms)) 3213 return -EINVAL; 3214 3215 if (!cfg80211_reg_can_beacon(&rdev->wiphy, ¶ms.chandef)) 3216 return -EINVAL; 3217 3218 err = cfg80211_chandef_dfs_required(wdev->wiphy, ¶ms.chandef); 3219 if (err < 0) 3220 return err; 3221 if (err) { 3222 radar_detect_width = BIT(params.chandef.width); 3223 params.radar_required = true; 3224 } 3225 3226 err = cfg80211_can_use_iftype_chan(rdev, wdev, wdev->iftype, 3227 params.chandef.chan, 3228 CHAN_MODE_SHARED, 3229 radar_detect_width); 3230 if (err) 3231 return err; 3232 3233 if (info->attrs[NL80211_ATTR_ACL_POLICY]) { 3234 params.acl = parse_acl_data(&rdev->wiphy, info); 3235 if (IS_ERR(params.acl)) 3236 return PTR_ERR(params.acl); 3237 } 3238 3239 err = rdev_start_ap(rdev, dev, ¶ms); 3240 if (!err) { 3241 wdev->preset_chandef = params.chandef; 3242 wdev->beacon_interval = params.beacon_interval; 3243 wdev->channel = params.chandef.chan; 3244 wdev->ssid_len = params.ssid_len; 3245 memcpy(wdev->ssid, params.ssid, wdev->ssid_len); 3246 } 3247 3248 kfree(params.acl); 3249 3250 return err; 3251 } 3252 3253 static int nl80211_set_beacon(struct sk_buff *skb, struct genl_info *info) 3254 { 3255 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 3256 struct net_device *dev = info->user_ptr[1]; 3257 struct wireless_dev *wdev = dev->ieee80211_ptr; 3258 struct cfg80211_beacon_data params; 3259 int err; 3260 3261 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP && 3262 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) 3263 return -EOPNOTSUPP; 3264 3265 if (!rdev->ops->change_beacon) 3266 return -EOPNOTSUPP; 3267 3268 if (!wdev->beacon_interval) 3269 return -EINVAL; 3270 3271 err = nl80211_parse_beacon(info->attrs, ¶ms); 3272 if (err) 3273 return err; 3274 3275 return rdev_change_beacon(rdev, dev, ¶ms); 3276 } 3277 3278 static int nl80211_stop_ap(struct sk_buff *skb, struct genl_info *info) 3279 { 3280 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 3281 struct net_device *dev = info->user_ptr[1]; 3282 3283 return cfg80211_stop_ap(rdev, dev); 3284 } 3285 3286 static const struct nla_policy sta_flags_policy[NL80211_STA_FLAG_MAX + 1] = { 3287 [NL80211_STA_FLAG_AUTHORIZED] = { .type = NLA_FLAG }, 3288 [NL80211_STA_FLAG_SHORT_PREAMBLE] = { .type = NLA_FLAG }, 3289 [NL80211_STA_FLAG_WME] = { .type = NLA_FLAG }, 3290 [NL80211_STA_FLAG_MFP] = { .type = NLA_FLAG }, 3291 [NL80211_STA_FLAG_AUTHENTICATED] = { .type = NLA_FLAG }, 3292 [NL80211_STA_FLAG_TDLS_PEER] = { .type = NLA_FLAG }, 3293 }; 3294 3295 static int parse_station_flags(struct genl_info *info, 3296 enum nl80211_iftype iftype, 3297 struct station_parameters *params) 3298 { 3299 struct nlattr *flags[NL80211_STA_FLAG_MAX + 1]; 3300 struct nlattr *nla; 3301 int flag; 3302 3303 /* 3304 * Try parsing the new attribute first so userspace 3305 * can specify both for older kernels. 3306 */ 3307 nla = info->attrs[NL80211_ATTR_STA_FLAGS2]; 3308 if (nla) { 3309 struct nl80211_sta_flag_update *sta_flags; 3310 3311 sta_flags = nla_data(nla); 3312 params->sta_flags_mask = sta_flags->mask; 3313 params->sta_flags_set = sta_flags->set; 3314 params->sta_flags_set &= params->sta_flags_mask; 3315 if ((params->sta_flags_mask | 3316 params->sta_flags_set) & BIT(__NL80211_STA_FLAG_INVALID)) 3317 return -EINVAL; 3318 return 0; 3319 } 3320 3321 /* if present, parse the old attribute */ 3322 3323 nla = info->attrs[NL80211_ATTR_STA_FLAGS]; 3324 if (!nla) 3325 return 0; 3326 3327 if (nla_parse_nested(flags, NL80211_STA_FLAG_MAX, 3328 nla, sta_flags_policy)) 3329 return -EINVAL; 3330 3331 /* 3332 * Only allow certain flags for interface types so that 3333 * other attributes are silently ignored. Remember that 3334 * this is backward compatibility code with old userspace 3335 * and shouldn't be hit in other cases anyway. 3336 */ 3337 switch (iftype) { 3338 case NL80211_IFTYPE_AP: 3339 case NL80211_IFTYPE_AP_VLAN: 3340 case NL80211_IFTYPE_P2P_GO: 3341 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) | 3342 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) | 3343 BIT(NL80211_STA_FLAG_WME) | 3344 BIT(NL80211_STA_FLAG_MFP); 3345 break; 3346 case NL80211_IFTYPE_P2P_CLIENT: 3347 case NL80211_IFTYPE_STATION: 3348 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) | 3349 BIT(NL80211_STA_FLAG_TDLS_PEER); 3350 break; 3351 case NL80211_IFTYPE_MESH_POINT: 3352 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHENTICATED) | 3353 BIT(NL80211_STA_FLAG_MFP) | 3354 BIT(NL80211_STA_FLAG_AUTHORIZED); 3355 default: 3356 return -EINVAL; 3357 } 3358 3359 for (flag = 1; flag <= NL80211_STA_FLAG_MAX; flag++) { 3360 if (flags[flag]) { 3361 params->sta_flags_set |= (1<<flag); 3362 3363 /* no longer support new API additions in old API */ 3364 if (flag > NL80211_STA_FLAG_MAX_OLD_API) 3365 return -EINVAL; 3366 } 3367 } 3368 3369 return 0; 3370 } 3371 3372 static bool nl80211_put_sta_rate(struct sk_buff *msg, struct rate_info *info, 3373 int attr) 3374 { 3375 struct nlattr *rate; 3376 u32 bitrate; 3377 u16 bitrate_compat; 3378 3379 rate = nla_nest_start(msg, attr); 3380 if (!rate) 3381 return false; 3382 3383 /* cfg80211_calculate_bitrate will return 0 for mcs >= 32 */ 3384 bitrate = cfg80211_calculate_bitrate(info); 3385 /* report 16-bit bitrate only if we can */ 3386 bitrate_compat = bitrate < (1UL << 16) ? bitrate : 0; 3387 if (bitrate > 0 && 3388 nla_put_u32(msg, NL80211_RATE_INFO_BITRATE32, bitrate)) 3389 return false; 3390 if (bitrate_compat > 0 && 3391 nla_put_u16(msg, NL80211_RATE_INFO_BITRATE, bitrate_compat)) 3392 return false; 3393 3394 if (info->flags & RATE_INFO_FLAGS_MCS) { 3395 if (nla_put_u8(msg, NL80211_RATE_INFO_MCS, info->mcs)) 3396 return false; 3397 if (info->flags & RATE_INFO_FLAGS_40_MHZ_WIDTH && 3398 nla_put_flag(msg, NL80211_RATE_INFO_40_MHZ_WIDTH)) 3399 return false; 3400 if (info->flags & RATE_INFO_FLAGS_SHORT_GI && 3401 nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI)) 3402 return false; 3403 } else if (info->flags & RATE_INFO_FLAGS_VHT_MCS) { 3404 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_MCS, info->mcs)) 3405 return false; 3406 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_NSS, info->nss)) 3407 return false; 3408 if (info->flags & RATE_INFO_FLAGS_40_MHZ_WIDTH && 3409 nla_put_flag(msg, NL80211_RATE_INFO_40_MHZ_WIDTH)) 3410 return false; 3411 if (info->flags & RATE_INFO_FLAGS_80_MHZ_WIDTH && 3412 nla_put_flag(msg, NL80211_RATE_INFO_80_MHZ_WIDTH)) 3413 return false; 3414 if (info->flags & RATE_INFO_FLAGS_80P80_MHZ_WIDTH && 3415 nla_put_flag(msg, NL80211_RATE_INFO_80P80_MHZ_WIDTH)) 3416 return false; 3417 if (info->flags & RATE_INFO_FLAGS_160_MHZ_WIDTH && 3418 nla_put_flag(msg, NL80211_RATE_INFO_160_MHZ_WIDTH)) 3419 return false; 3420 if (info->flags & RATE_INFO_FLAGS_SHORT_GI && 3421 nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI)) 3422 return false; 3423 } 3424 3425 nla_nest_end(msg, rate); 3426 return true; 3427 } 3428 3429 static bool nl80211_put_signal(struct sk_buff *msg, u8 mask, s8 *signal, 3430 int id) 3431 { 3432 void *attr; 3433 int i = 0; 3434 3435 if (!mask) 3436 return true; 3437 3438 attr = nla_nest_start(msg, id); 3439 if (!attr) 3440 return false; 3441 3442 for (i = 0; i < IEEE80211_MAX_CHAINS; i++) { 3443 if (!(mask & BIT(i))) 3444 continue; 3445 3446 if (nla_put_u8(msg, i, signal[i])) 3447 return false; 3448 } 3449 3450 nla_nest_end(msg, attr); 3451 3452 return true; 3453 } 3454 3455 static int nl80211_send_station(struct sk_buff *msg, u32 portid, u32 seq, 3456 int flags, 3457 struct cfg80211_registered_device *rdev, 3458 struct net_device *dev, 3459 const u8 *mac_addr, struct station_info *sinfo) 3460 { 3461 void *hdr; 3462 struct nlattr *sinfoattr, *bss_param; 3463 3464 hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_STATION); 3465 if (!hdr) 3466 return -1; 3467 3468 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) || 3469 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) || 3470 nla_put_u32(msg, NL80211_ATTR_GENERATION, sinfo->generation)) 3471 goto nla_put_failure; 3472 3473 sinfoattr = nla_nest_start(msg, NL80211_ATTR_STA_INFO); 3474 if (!sinfoattr) 3475 goto nla_put_failure; 3476 if ((sinfo->filled & STATION_INFO_CONNECTED_TIME) && 3477 nla_put_u32(msg, NL80211_STA_INFO_CONNECTED_TIME, 3478 sinfo->connected_time)) 3479 goto nla_put_failure; 3480 if ((sinfo->filled & STATION_INFO_INACTIVE_TIME) && 3481 nla_put_u32(msg, NL80211_STA_INFO_INACTIVE_TIME, 3482 sinfo->inactive_time)) 3483 goto nla_put_failure; 3484 if ((sinfo->filled & (STATION_INFO_RX_BYTES | 3485 STATION_INFO_RX_BYTES64)) && 3486 nla_put_u32(msg, NL80211_STA_INFO_RX_BYTES, 3487 (u32)sinfo->rx_bytes)) 3488 goto nla_put_failure; 3489 if ((sinfo->filled & (STATION_INFO_TX_BYTES | 3490 STATION_INFO_TX_BYTES64)) && 3491 nla_put_u32(msg, NL80211_STA_INFO_TX_BYTES, 3492 (u32)sinfo->tx_bytes)) 3493 goto nla_put_failure; 3494 if ((sinfo->filled & STATION_INFO_RX_BYTES64) && 3495 nla_put_u64(msg, NL80211_STA_INFO_RX_BYTES64, 3496 sinfo->rx_bytes)) 3497 goto nla_put_failure; 3498 if ((sinfo->filled & STATION_INFO_TX_BYTES64) && 3499 nla_put_u64(msg, NL80211_STA_INFO_TX_BYTES64, 3500 sinfo->tx_bytes)) 3501 goto nla_put_failure; 3502 if ((sinfo->filled & STATION_INFO_LLID) && 3503 nla_put_u16(msg, NL80211_STA_INFO_LLID, sinfo->llid)) 3504 goto nla_put_failure; 3505 if ((sinfo->filled & STATION_INFO_PLID) && 3506 nla_put_u16(msg, NL80211_STA_INFO_PLID, sinfo->plid)) 3507 goto nla_put_failure; 3508 if ((sinfo->filled & STATION_INFO_PLINK_STATE) && 3509 nla_put_u8(msg, NL80211_STA_INFO_PLINK_STATE, 3510 sinfo->plink_state)) 3511 goto nla_put_failure; 3512 switch (rdev->wiphy.signal_type) { 3513 case CFG80211_SIGNAL_TYPE_MBM: 3514 if ((sinfo->filled & STATION_INFO_SIGNAL) && 3515 nla_put_u8(msg, NL80211_STA_INFO_SIGNAL, 3516 sinfo->signal)) 3517 goto nla_put_failure; 3518 if ((sinfo->filled & STATION_INFO_SIGNAL_AVG) && 3519 nla_put_u8(msg, NL80211_STA_INFO_SIGNAL_AVG, 3520 sinfo->signal_avg)) 3521 goto nla_put_failure; 3522 break; 3523 default: 3524 break; 3525 } 3526 if (sinfo->filled & STATION_INFO_CHAIN_SIGNAL) { 3527 if (!nl80211_put_signal(msg, sinfo->chains, 3528 sinfo->chain_signal, 3529 NL80211_STA_INFO_CHAIN_SIGNAL)) 3530 goto nla_put_failure; 3531 } 3532 if (sinfo->filled & STATION_INFO_CHAIN_SIGNAL_AVG) { 3533 if (!nl80211_put_signal(msg, sinfo->chains, 3534 sinfo->chain_signal_avg, 3535 NL80211_STA_INFO_CHAIN_SIGNAL_AVG)) 3536 goto nla_put_failure; 3537 } 3538 if (sinfo->filled & STATION_INFO_TX_BITRATE) { 3539 if (!nl80211_put_sta_rate(msg, &sinfo->txrate, 3540 NL80211_STA_INFO_TX_BITRATE)) 3541 goto nla_put_failure; 3542 } 3543 if (sinfo->filled & STATION_INFO_RX_BITRATE) { 3544 if (!nl80211_put_sta_rate(msg, &sinfo->rxrate, 3545 NL80211_STA_INFO_RX_BITRATE)) 3546 goto nla_put_failure; 3547 } 3548 if ((sinfo->filled & STATION_INFO_RX_PACKETS) && 3549 nla_put_u32(msg, NL80211_STA_INFO_RX_PACKETS, 3550 sinfo->rx_packets)) 3551 goto nla_put_failure; 3552 if ((sinfo->filled & STATION_INFO_TX_PACKETS) && 3553 nla_put_u32(msg, NL80211_STA_INFO_TX_PACKETS, 3554 sinfo->tx_packets)) 3555 goto nla_put_failure; 3556 if ((sinfo->filled & STATION_INFO_TX_RETRIES) && 3557 nla_put_u32(msg, NL80211_STA_INFO_TX_RETRIES, 3558 sinfo->tx_retries)) 3559 goto nla_put_failure; 3560 if ((sinfo->filled & STATION_INFO_TX_FAILED) && 3561 nla_put_u32(msg, NL80211_STA_INFO_TX_FAILED, 3562 sinfo->tx_failed)) 3563 goto nla_put_failure; 3564 if ((sinfo->filled & STATION_INFO_BEACON_LOSS_COUNT) && 3565 nla_put_u32(msg, NL80211_STA_INFO_BEACON_LOSS, 3566 sinfo->beacon_loss_count)) 3567 goto nla_put_failure; 3568 if ((sinfo->filled & STATION_INFO_LOCAL_PM) && 3569 nla_put_u32(msg, NL80211_STA_INFO_LOCAL_PM, 3570 sinfo->local_pm)) 3571 goto nla_put_failure; 3572 if ((sinfo->filled & STATION_INFO_PEER_PM) && 3573 nla_put_u32(msg, NL80211_STA_INFO_PEER_PM, 3574 sinfo->peer_pm)) 3575 goto nla_put_failure; 3576 if ((sinfo->filled & STATION_INFO_NONPEER_PM) && 3577 nla_put_u32(msg, NL80211_STA_INFO_NONPEER_PM, 3578 sinfo->nonpeer_pm)) 3579 goto nla_put_failure; 3580 if (sinfo->filled & STATION_INFO_BSS_PARAM) { 3581 bss_param = nla_nest_start(msg, NL80211_STA_INFO_BSS_PARAM); 3582 if (!bss_param) 3583 goto nla_put_failure; 3584 3585 if (((sinfo->bss_param.flags & BSS_PARAM_FLAGS_CTS_PROT) && 3586 nla_put_flag(msg, NL80211_STA_BSS_PARAM_CTS_PROT)) || 3587 ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_PREAMBLE) && 3588 nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_PREAMBLE)) || 3589 ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_SLOT_TIME) && 3590 nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_SLOT_TIME)) || 3591 nla_put_u8(msg, NL80211_STA_BSS_PARAM_DTIM_PERIOD, 3592 sinfo->bss_param.dtim_period) || 3593 nla_put_u16(msg, NL80211_STA_BSS_PARAM_BEACON_INTERVAL, 3594 sinfo->bss_param.beacon_interval)) 3595 goto nla_put_failure; 3596 3597 nla_nest_end(msg, bss_param); 3598 } 3599 if ((sinfo->filled & STATION_INFO_STA_FLAGS) && 3600 nla_put(msg, NL80211_STA_INFO_STA_FLAGS, 3601 sizeof(struct nl80211_sta_flag_update), 3602 &sinfo->sta_flags)) 3603 goto nla_put_failure; 3604 if ((sinfo->filled & STATION_INFO_T_OFFSET) && 3605 nla_put_u64(msg, NL80211_STA_INFO_T_OFFSET, 3606 sinfo->t_offset)) 3607 goto nla_put_failure; 3608 nla_nest_end(msg, sinfoattr); 3609 3610 if ((sinfo->filled & STATION_INFO_ASSOC_REQ_IES) && 3611 nla_put(msg, NL80211_ATTR_IE, sinfo->assoc_req_ies_len, 3612 sinfo->assoc_req_ies)) 3613 goto nla_put_failure; 3614 3615 return genlmsg_end(msg, hdr); 3616 3617 nla_put_failure: 3618 genlmsg_cancel(msg, hdr); 3619 return -EMSGSIZE; 3620 } 3621 3622 static int nl80211_dump_station(struct sk_buff *skb, 3623 struct netlink_callback *cb) 3624 { 3625 struct station_info sinfo; 3626 struct cfg80211_registered_device *dev; 3627 struct wireless_dev *wdev; 3628 u8 mac_addr[ETH_ALEN]; 3629 int sta_idx = cb->args[2]; 3630 int err; 3631 3632 err = nl80211_prepare_wdev_dump(skb, cb, &dev, &wdev); 3633 if (err) 3634 return err; 3635 3636 if (!wdev->netdev) { 3637 err = -EINVAL; 3638 goto out_err; 3639 } 3640 3641 if (!dev->ops->dump_station) { 3642 err = -EOPNOTSUPP; 3643 goto out_err; 3644 } 3645 3646 while (1) { 3647 memset(&sinfo, 0, sizeof(sinfo)); 3648 err = rdev_dump_station(dev, wdev->netdev, sta_idx, 3649 mac_addr, &sinfo); 3650 if (err == -ENOENT) 3651 break; 3652 if (err) 3653 goto out_err; 3654 3655 if (nl80211_send_station(skb, 3656 NETLINK_CB(cb->skb).portid, 3657 cb->nlh->nlmsg_seq, NLM_F_MULTI, 3658 dev, wdev->netdev, mac_addr, 3659 &sinfo) < 0) 3660 goto out; 3661 3662 sta_idx++; 3663 } 3664 3665 3666 out: 3667 cb->args[2] = sta_idx; 3668 err = skb->len; 3669 out_err: 3670 nl80211_finish_wdev_dump(dev); 3671 3672 return err; 3673 } 3674 3675 static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info) 3676 { 3677 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 3678 struct net_device *dev = info->user_ptr[1]; 3679 struct station_info sinfo; 3680 struct sk_buff *msg; 3681 u8 *mac_addr = NULL; 3682 int err; 3683 3684 memset(&sinfo, 0, sizeof(sinfo)); 3685 3686 if (!info->attrs[NL80211_ATTR_MAC]) 3687 return -EINVAL; 3688 3689 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]); 3690 3691 if (!rdev->ops->get_station) 3692 return -EOPNOTSUPP; 3693 3694 err = rdev_get_station(rdev, dev, mac_addr, &sinfo); 3695 if (err) 3696 return err; 3697 3698 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 3699 if (!msg) 3700 return -ENOMEM; 3701 3702 if (nl80211_send_station(msg, info->snd_portid, info->snd_seq, 0, 3703 rdev, dev, mac_addr, &sinfo) < 0) { 3704 nlmsg_free(msg); 3705 return -ENOBUFS; 3706 } 3707 3708 return genlmsg_reply(msg, info); 3709 } 3710 3711 int cfg80211_check_station_change(struct wiphy *wiphy, 3712 struct station_parameters *params, 3713 enum cfg80211_station_type statype) 3714 { 3715 if (params->listen_interval != -1) 3716 return -EINVAL; 3717 if (params->aid) 3718 return -EINVAL; 3719 3720 /* When you run into this, adjust the code below for the new flag */ 3721 BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7); 3722 3723 switch (statype) { 3724 case CFG80211_STA_MESH_PEER_KERNEL: 3725 case CFG80211_STA_MESH_PEER_USER: 3726 /* 3727 * No ignoring the TDLS flag here -- the userspace mesh 3728 * code doesn't have the bug of including TDLS in the 3729 * mask everywhere. 3730 */ 3731 if (params->sta_flags_mask & 3732 ~(BIT(NL80211_STA_FLAG_AUTHENTICATED) | 3733 BIT(NL80211_STA_FLAG_MFP) | 3734 BIT(NL80211_STA_FLAG_AUTHORIZED))) 3735 return -EINVAL; 3736 break; 3737 case CFG80211_STA_TDLS_PEER_SETUP: 3738 case CFG80211_STA_TDLS_PEER_ACTIVE: 3739 if (!(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))) 3740 return -EINVAL; 3741 /* ignore since it can't change */ 3742 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER); 3743 break; 3744 default: 3745 /* disallow mesh-specific things */ 3746 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION) 3747 return -EINVAL; 3748 if (params->local_pm) 3749 return -EINVAL; 3750 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE) 3751 return -EINVAL; 3752 } 3753 3754 if (statype != CFG80211_STA_TDLS_PEER_SETUP && 3755 statype != CFG80211_STA_TDLS_PEER_ACTIVE) { 3756 /* TDLS can't be set, ... */ 3757 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) 3758 return -EINVAL; 3759 /* 3760 * ... but don't bother the driver with it. This works around 3761 * a hostapd/wpa_supplicant issue -- it always includes the 3762 * TLDS_PEER flag in the mask even for AP mode. 3763 */ 3764 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER); 3765 } 3766 3767 if (statype != CFG80211_STA_TDLS_PEER_SETUP) { 3768 /* reject other things that can't change */ 3769 if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD) 3770 return -EINVAL; 3771 if (params->sta_modify_mask & STATION_PARAM_APPLY_CAPABILITY) 3772 return -EINVAL; 3773 if (params->supported_rates) 3774 return -EINVAL; 3775 if (params->ext_capab || params->ht_capa || params->vht_capa) 3776 return -EINVAL; 3777 } 3778 3779 if (statype != CFG80211_STA_AP_CLIENT) { 3780 if (params->vlan) 3781 return -EINVAL; 3782 } 3783 3784 switch (statype) { 3785 case CFG80211_STA_AP_MLME_CLIENT: 3786 /* Use this only for authorizing/unauthorizing a station */ 3787 if (!(params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED))) 3788 return -EOPNOTSUPP; 3789 break; 3790 case CFG80211_STA_AP_CLIENT: 3791 /* accept only the listed bits */ 3792 if (params->sta_flags_mask & 3793 ~(BIT(NL80211_STA_FLAG_AUTHORIZED) | 3794 BIT(NL80211_STA_FLAG_AUTHENTICATED) | 3795 BIT(NL80211_STA_FLAG_ASSOCIATED) | 3796 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) | 3797 BIT(NL80211_STA_FLAG_WME) | 3798 BIT(NL80211_STA_FLAG_MFP))) 3799 return -EINVAL; 3800 3801 /* but authenticated/associated only if driver handles it */ 3802 if (!(wiphy->features & NL80211_FEATURE_FULL_AP_CLIENT_STATE) && 3803 params->sta_flags_mask & 3804 (BIT(NL80211_STA_FLAG_AUTHENTICATED) | 3805 BIT(NL80211_STA_FLAG_ASSOCIATED))) 3806 return -EINVAL; 3807 break; 3808 case CFG80211_STA_IBSS: 3809 case CFG80211_STA_AP_STA: 3810 /* reject any changes other than AUTHORIZED */ 3811 if (params->sta_flags_mask & ~BIT(NL80211_STA_FLAG_AUTHORIZED)) 3812 return -EINVAL; 3813 break; 3814 case CFG80211_STA_TDLS_PEER_SETUP: 3815 /* reject any changes other than AUTHORIZED or WME */ 3816 if (params->sta_flags_mask & ~(BIT(NL80211_STA_FLAG_AUTHORIZED) | 3817 BIT(NL80211_STA_FLAG_WME))) 3818 return -EINVAL; 3819 /* force (at least) rates when authorizing */ 3820 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_AUTHORIZED) && 3821 !params->supported_rates) 3822 return -EINVAL; 3823 break; 3824 case CFG80211_STA_TDLS_PEER_ACTIVE: 3825 /* reject any changes */ 3826 return -EINVAL; 3827 case CFG80211_STA_MESH_PEER_KERNEL: 3828 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE) 3829 return -EINVAL; 3830 break; 3831 case CFG80211_STA_MESH_PEER_USER: 3832 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION) 3833 return -EINVAL; 3834 break; 3835 } 3836 3837 return 0; 3838 } 3839 EXPORT_SYMBOL(cfg80211_check_station_change); 3840 3841 /* 3842 * Get vlan interface making sure it is running and on the right wiphy. 3843 */ 3844 static struct net_device *get_vlan(struct genl_info *info, 3845 struct cfg80211_registered_device *rdev) 3846 { 3847 struct nlattr *vlanattr = info->attrs[NL80211_ATTR_STA_VLAN]; 3848 struct net_device *v; 3849 int ret; 3850 3851 if (!vlanattr) 3852 return NULL; 3853 3854 v = dev_get_by_index(genl_info_net(info), nla_get_u32(vlanattr)); 3855 if (!v) 3856 return ERR_PTR(-ENODEV); 3857 3858 if (!v->ieee80211_ptr || v->ieee80211_ptr->wiphy != &rdev->wiphy) { 3859 ret = -EINVAL; 3860 goto error; 3861 } 3862 3863 if (v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN && 3864 v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP && 3865 v->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) { 3866 ret = -EINVAL; 3867 goto error; 3868 } 3869 3870 if (!netif_running(v)) { 3871 ret = -ENETDOWN; 3872 goto error; 3873 } 3874 3875 return v; 3876 error: 3877 dev_put(v); 3878 return ERR_PTR(ret); 3879 } 3880 3881 static struct nla_policy 3882 nl80211_sta_wme_policy[NL80211_STA_WME_MAX + 1] __read_mostly = { 3883 [NL80211_STA_WME_UAPSD_QUEUES] = { .type = NLA_U8 }, 3884 [NL80211_STA_WME_MAX_SP] = { .type = NLA_U8 }, 3885 }; 3886 3887 static int nl80211_parse_sta_wme(struct genl_info *info, 3888 struct station_parameters *params) 3889 { 3890 struct nlattr *tb[NL80211_STA_WME_MAX + 1]; 3891 struct nlattr *nla; 3892 int err; 3893 3894 /* parse WME attributes if present */ 3895 if (!info->attrs[NL80211_ATTR_STA_WME]) 3896 return 0; 3897 3898 nla = info->attrs[NL80211_ATTR_STA_WME]; 3899 err = nla_parse_nested(tb, NL80211_STA_WME_MAX, nla, 3900 nl80211_sta_wme_policy); 3901 if (err) 3902 return err; 3903 3904 if (tb[NL80211_STA_WME_UAPSD_QUEUES]) 3905 params->uapsd_queues = nla_get_u8( 3906 tb[NL80211_STA_WME_UAPSD_QUEUES]); 3907 if (params->uapsd_queues & ~IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK) 3908 return -EINVAL; 3909 3910 if (tb[NL80211_STA_WME_MAX_SP]) 3911 params->max_sp = nla_get_u8(tb[NL80211_STA_WME_MAX_SP]); 3912 3913 if (params->max_sp & ~IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK) 3914 return -EINVAL; 3915 3916 params->sta_modify_mask |= STATION_PARAM_APPLY_UAPSD; 3917 3918 return 0; 3919 } 3920 3921 static int nl80211_parse_sta_channel_info(struct genl_info *info, 3922 struct station_parameters *params) 3923 { 3924 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]) { 3925 params->supported_channels = 3926 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]); 3927 params->supported_channels_len = 3928 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]); 3929 /* 3930 * Need to include at least one (first channel, number of 3931 * channels) tuple for each subband, and must have proper 3932 * tuples for the rest of the data as well. 3933 */ 3934 if (params->supported_channels_len < 2) 3935 return -EINVAL; 3936 if (params->supported_channels_len % 2) 3937 return -EINVAL; 3938 } 3939 3940 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]) { 3941 params->supported_oper_classes = 3942 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]); 3943 params->supported_oper_classes_len = 3944 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]); 3945 /* 3946 * The value of the Length field of the Supported Operating 3947 * Classes element is between 2 and 253. 3948 */ 3949 if (params->supported_oper_classes_len < 2 || 3950 params->supported_oper_classes_len > 253) 3951 return -EINVAL; 3952 } 3953 return 0; 3954 } 3955 3956 static int nl80211_set_station_tdls(struct genl_info *info, 3957 struct station_parameters *params) 3958 { 3959 int err; 3960 /* Dummy STA entry gets updated once the peer capabilities are known */ 3961 if (info->attrs[NL80211_ATTR_PEER_AID]) 3962 params->aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]); 3963 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) 3964 params->ht_capa = 3965 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]); 3966 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) 3967 params->vht_capa = 3968 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]); 3969 3970 err = nl80211_parse_sta_channel_info(info, params); 3971 if (err) 3972 return err; 3973 3974 return nl80211_parse_sta_wme(info, params); 3975 } 3976 3977 static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info) 3978 { 3979 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 3980 struct net_device *dev = info->user_ptr[1]; 3981 struct station_parameters params; 3982 u8 *mac_addr; 3983 int err; 3984 3985 memset(¶ms, 0, sizeof(params)); 3986 3987 params.listen_interval = -1; 3988 3989 if (!rdev->ops->change_station) 3990 return -EOPNOTSUPP; 3991 3992 if (info->attrs[NL80211_ATTR_STA_AID]) 3993 return -EINVAL; 3994 3995 if (!info->attrs[NL80211_ATTR_MAC]) 3996 return -EINVAL; 3997 3998 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]); 3999 4000 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) { 4001 params.supported_rates = 4002 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]); 4003 params.supported_rates_len = 4004 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]); 4005 } 4006 4007 if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) { 4008 params.capability = 4009 nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]); 4010 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY; 4011 } 4012 4013 if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) { 4014 params.ext_capab = 4015 nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]); 4016 params.ext_capab_len = 4017 nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]); 4018 } 4019 4020 if (info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]) 4021 return -EINVAL; 4022 4023 if (parse_station_flags(info, dev->ieee80211_ptr->iftype, ¶ms)) 4024 return -EINVAL; 4025 4026 if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION]) { 4027 params.plink_action = 4028 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]); 4029 if (params.plink_action >= NUM_NL80211_PLINK_ACTIONS) 4030 return -EINVAL; 4031 } 4032 4033 if (info->attrs[NL80211_ATTR_STA_PLINK_STATE]) { 4034 params.plink_state = 4035 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_STATE]); 4036 if (params.plink_state >= NUM_NL80211_PLINK_STATES) 4037 return -EINVAL; 4038 params.sta_modify_mask |= STATION_PARAM_APPLY_PLINK_STATE; 4039 } 4040 4041 if (info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]) { 4042 enum nl80211_mesh_power_mode pm = nla_get_u32( 4043 info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]); 4044 4045 if (pm <= NL80211_MESH_POWER_UNKNOWN || 4046 pm > NL80211_MESH_POWER_MAX) 4047 return -EINVAL; 4048 4049 params.local_pm = pm; 4050 } 4051 4052 /* Include parameters for TDLS peer (will check later) */ 4053 err = nl80211_set_station_tdls(info, ¶ms); 4054 if (err) 4055 return err; 4056 4057 params.vlan = get_vlan(info, rdev); 4058 if (IS_ERR(params.vlan)) 4059 return PTR_ERR(params.vlan); 4060 4061 switch (dev->ieee80211_ptr->iftype) { 4062 case NL80211_IFTYPE_AP: 4063 case NL80211_IFTYPE_AP_VLAN: 4064 case NL80211_IFTYPE_P2P_GO: 4065 case NL80211_IFTYPE_P2P_CLIENT: 4066 case NL80211_IFTYPE_STATION: 4067 case NL80211_IFTYPE_ADHOC: 4068 case NL80211_IFTYPE_MESH_POINT: 4069 break; 4070 default: 4071 err = -EOPNOTSUPP; 4072 goto out_put_vlan; 4073 } 4074 4075 /* driver will call cfg80211_check_station_change() */ 4076 err = rdev_change_station(rdev, dev, mac_addr, ¶ms); 4077 4078 out_put_vlan: 4079 if (params.vlan) 4080 dev_put(params.vlan); 4081 4082 return err; 4083 } 4084 4085 static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info) 4086 { 4087 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 4088 int err; 4089 struct net_device *dev = info->user_ptr[1]; 4090 struct station_parameters params; 4091 u8 *mac_addr = NULL; 4092 4093 memset(¶ms, 0, sizeof(params)); 4094 4095 if (!rdev->ops->add_station) 4096 return -EOPNOTSUPP; 4097 4098 if (!info->attrs[NL80211_ATTR_MAC]) 4099 return -EINVAL; 4100 4101 if (!info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]) 4102 return -EINVAL; 4103 4104 if (!info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) 4105 return -EINVAL; 4106 4107 if (!info->attrs[NL80211_ATTR_STA_AID] && 4108 !info->attrs[NL80211_ATTR_PEER_AID]) 4109 return -EINVAL; 4110 4111 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]); 4112 params.supported_rates = 4113 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]); 4114 params.supported_rates_len = 4115 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]); 4116 params.listen_interval = 4117 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]); 4118 4119 if (info->attrs[NL80211_ATTR_PEER_AID]) 4120 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]); 4121 else 4122 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]); 4123 if (!params.aid || params.aid > IEEE80211_MAX_AID) 4124 return -EINVAL; 4125 4126 if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) { 4127 params.capability = 4128 nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]); 4129 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY; 4130 } 4131 4132 if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) { 4133 params.ext_capab = 4134 nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]); 4135 params.ext_capab_len = 4136 nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]); 4137 } 4138 4139 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) 4140 params.ht_capa = 4141 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]); 4142 4143 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) 4144 params.vht_capa = 4145 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]); 4146 4147 if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION]) { 4148 params.plink_action = 4149 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]); 4150 if (params.plink_action >= NUM_NL80211_PLINK_ACTIONS) 4151 return -EINVAL; 4152 } 4153 4154 err = nl80211_parse_sta_channel_info(info, ¶ms); 4155 if (err) 4156 return err; 4157 4158 err = nl80211_parse_sta_wme(info, ¶ms); 4159 if (err) 4160 return err; 4161 4162 if (parse_station_flags(info, dev->ieee80211_ptr->iftype, ¶ms)) 4163 return -EINVAL; 4164 4165 /* When you run into this, adjust the code below for the new flag */ 4166 BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7); 4167 4168 switch (dev->ieee80211_ptr->iftype) { 4169 case NL80211_IFTYPE_AP: 4170 case NL80211_IFTYPE_AP_VLAN: 4171 case NL80211_IFTYPE_P2P_GO: 4172 /* ignore WME attributes if iface/sta is not capable */ 4173 if (!(rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) || 4174 !(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME))) 4175 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD; 4176 4177 /* TDLS peers cannot be added */ 4178 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) || 4179 info->attrs[NL80211_ATTR_PEER_AID]) 4180 return -EINVAL; 4181 /* but don't bother the driver with it */ 4182 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER); 4183 4184 /* allow authenticated/associated only if driver handles it */ 4185 if (!(rdev->wiphy.features & 4186 NL80211_FEATURE_FULL_AP_CLIENT_STATE) && 4187 params.sta_flags_mask & 4188 (BIT(NL80211_STA_FLAG_AUTHENTICATED) | 4189 BIT(NL80211_STA_FLAG_ASSOCIATED))) 4190 return -EINVAL; 4191 4192 /* must be last in here for error handling */ 4193 params.vlan = get_vlan(info, rdev); 4194 if (IS_ERR(params.vlan)) 4195 return PTR_ERR(params.vlan); 4196 break; 4197 case NL80211_IFTYPE_MESH_POINT: 4198 /* ignore uAPSD data */ 4199 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD; 4200 4201 /* associated is disallowed */ 4202 if (params.sta_flags_mask & BIT(NL80211_STA_FLAG_ASSOCIATED)) 4203 return -EINVAL; 4204 /* TDLS peers cannot be added */ 4205 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) || 4206 info->attrs[NL80211_ATTR_PEER_AID]) 4207 return -EINVAL; 4208 break; 4209 case NL80211_IFTYPE_STATION: 4210 case NL80211_IFTYPE_P2P_CLIENT: 4211 /* ignore uAPSD data */ 4212 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD; 4213 4214 /* these are disallowed */ 4215 if (params.sta_flags_mask & 4216 (BIT(NL80211_STA_FLAG_ASSOCIATED) | 4217 BIT(NL80211_STA_FLAG_AUTHENTICATED))) 4218 return -EINVAL; 4219 /* Only TDLS peers can be added */ 4220 if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))) 4221 return -EINVAL; 4222 /* Can only add if TDLS ... */ 4223 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS)) 4224 return -EOPNOTSUPP; 4225 /* ... with external setup is supported */ 4226 if (!(rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP)) 4227 return -EOPNOTSUPP; 4228 /* 4229 * Older wpa_supplicant versions always mark the TDLS peer 4230 * as authorized, but it shouldn't yet be. 4231 */ 4232 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_AUTHORIZED); 4233 break; 4234 default: 4235 return -EOPNOTSUPP; 4236 } 4237 4238 /* be aware of params.vlan when changing code here */ 4239 4240 err = rdev_add_station(rdev, dev, mac_addr, ¶ms); 4241 4242 if (params.vlan) 4243 dev_put(params.vlan); 4244 return err; 4245 } 4246 4247 static int nl80211_del_station(struct sk_buff *skb, struct genl_info *info) 4248 { 4249 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 4250 struct net_device *dev = info->user_ptr[1]; 4251 u8 *mac_addr = NULL; 4252 4253 if (info->attrs[NL80211_ATTR_MAC]) 4254 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]); 4255 4256 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP && 4257 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN && 4258 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT && 4259 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) 4260 return -EINVAL; 4261 4262 if (!rdev->ops->del_station) 4263 return -EOPNOTSUPP; 4264 4265 return rdev_del_station(rdev, dev, mac_addr); 4266 } 4267 4268 static int nl80211_send_mpath(struct sk_buff *msg, u32 portid, u32 seq, 4269 int flags, struct net_device *dev, 4270 u8 *dst, u8 *next_hop, 4271 struct mpath_info *pinfo) 4272 { 4273 void *hdr; 4274 struct nlattr *pinfoattr; 4275 4276 hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_STATION); 4277 if (!hdr) 4278 return -1; 4279 4280 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) || 4281 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, dst) || 4282 nla_put(msg, NL80211_ATTR_MPATH_NEXT_HOP, ETH_ALEN, next_hop) || 4283 nla_put_u32(msg, NL80211_ATTR_GENERATION, pinfo->generation)) 4284 goto nla_put_failure; 4285 4286 pinfoattr = nla_nest_start(msg, NL80211_ATTR_MPATH_INFO); 4287 if (!pinfoattr) 4288 goto nla_put_failure; 4289 if ((pinfo->filled & MPATH_INFO_FRAME_QLEN) && 4290 nla_put_u32(msg, NL80211_MPATH_INFO_FRAME_QLEN, 4291 pinfo->frame_qlen)) 4292 goto nla_put_failure; 4293 if (((pinfo->filled & MPATH_INFO_SN) && 4294 nla_put_u32(msg, NL80211_MPATH_INFO_SN, pinfo->sn)) || 4295 ((pinfo->filled & MPATH_INFO_METRIC) && 4296 nla_put_u32(msg, NL80211_MPATH_INFO_METRIC, 4297 pinfo->metric)) || 4298 ((pinfo->filled & MPATH_INFO_EXPTIME) && 4299 nla_put_u32(msg, NL80211_MPATH_INFO_EXPTIME, 4300 pinfo->exptime)) || 4301 ((pinfo->filled & MPATH_INFO_FLAGS) && 4302 nla_put_u8(msg, NL80211_MPATH_INFO_FLAGS, 4303 pinfo->flags)) || 4304 ((pinfo->filled & MPATH_INFO_DISCOVERY_TIMEOUT) && 4305 nla_put_u32(msg, NL80211_MPATH_INFO_DISCOVERY_TIMEOUT, 4306 pinfo->discovery_timeout)) || 4307 ((pinfo->filled & MPATH_INFO_DISCOVERY_RETRIES) && 4308 nla_put_u8(msg, NL80211_MPATH_INFO_DISCOVERY_RETRIES, 4309 pinfo->discovery_retries))) 4310 goto nla_put_failure; 4311 4312 nla_nest_end(msg, pinfoattr); 4313 4314 return genlmsg_end(msg, hdr); 4315 4316 nla_put_failure: 4317 genlmsg_cancel(msg, hdr); 4318 return -EMSGSIZE; 4319 } 4320 4321 static int nl80211_dump_mpath(struct sk_buff *skb, 4322 struct netlink_callback *cb) 4323 { 4324 struct mpath_info pinfo; 4325 struct cfg80211_registered_device *dev; 4326 struct wireless_dev *wdev; 4327 u8 dst[ETH_ALEN]; 4328 u8 next_hop[ETH_ALEN]; 4329 int path_idx = cb->args[2]; 4330 int err; 4331 4332 err = nl80211_prepare_wdev_dump(skb, cb, &dev, &wdev); 4333 if (err) 4334 return err; 4335 4336 if (!dev->ops->dump_mpath) { 4337 err = -EOPNOTSUPP; 4338 goto out_err; 4339 } 4340 4341 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) { 4342 err = -EOPNOTSUPP; 4343 goto out_err; 4344 } 4345 4346 while (1) { 4347 err = rdev_dump_mpath(dev, wdev->netdev, path_idx, dst, 4348 next_hop, &pinfo); 4349 if (err == -ENOENT) 4350 break; 4351 if (err) 4352 goto out_err; 4353 4354 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid, 4355 cb->nlh->nlmsg_seq, NLM_F_MULTI, 4356 wdev->netdev, dst, next_hop, 4357 &pinfo) < 0) 4358 goto out; 4359 4360 path_idx++; 4361 } 4362 4363 4364 out: 4365 cb->args[2] = path_idx; 4366 err = skb->len; 4367 out_err: 4368 nl80211_finish_wdev_dump(dev); 4369 return err; 4370 } 4371 4372 static int nl80211_get_mpath(struct sk_buff *skb, struct genl_info *info) 4373 { 4374 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 4375 int err; 4376 struct net_device *dev = info->user_ptr[1]; 4377 struct mpath_info pinfo; 4378 struct sk_buff *msg; 4379 u8 *dst = NULL; 4380 u8 next_hop[ETH_ALEN]; 4381 4382 memset(&pinfo, 0, sizeof(pinfo)); 4383 4384 if (!info->attrs[NL80211_ATTR_MAC]) 4385 return -EINVAL; 4386 4387 dst = nla_data(info->attrs[NL80211_ATTR_MAC]); 4388 4389 if (!rdev->ops->get_mpath) 4390 return -EOPNOTSUPP; 4391 4392 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT) 4393 return -EOPNOTSUPP; 4394 4395 err = rdev_get_mpath(rdev, dev, dst, next_hop, &pinfo); 4396 if (err) 4397 return err; 4398 4399 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 4400 if (!msg) 4401 return -ENOMEM; 4402 4403 if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0, 4404 dev, dst, next_hop, &pinfo) < 0) { 4405 nlmsg_free(msg); 4406 return -ENOBUFS; 4407 } 4408 4409 return genlmsg_reply(msg, info); 4410 } 4411 4412 static int nl80211_set_mpath(struct sk_buff *skb, struct genl_info *info) 4413 { 4414 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 4415 struct net_device *dev = info->user_ptr[1]; 4416 u8 *dst = NULL; 4417 u8 *next_hop = NULL; 4418 4419 if (!info->attrs[NL80211_ATTR_MAC]) 4420 return -EINVAL; 4421 4422 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]) 4423 return -EINVAL; 4424 4425 dst = nla_data(info->attrs[NL80211_ATTR_MAC]); 4426 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]); 4427 4428 if (!rdev->ops->change_mpath) 4429 return -EOPNOTSUPP; 4430 4431 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT) 4432 return -EOPNOTSUPP; 4433 4434 return rdev_change_mpath(rdev, dev, dst, next_hop); 4435 } 4436 4437 static int nl80211_new_mpath(struct sk_buff *skb, struct genl_info *info) 4438 { 4439 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 4440 struct net_device *dev = info->user_ptr[1]; 4441 u8 *dst = NULL; 4442 u8 *next_hop = NULL; 4443 4444 if (!info->attrs[NL80211_ATTR_MAC]) 4445 return -EINVAL; 4446 4447 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]) 4448 return -EINVAL; 4449 4450 dst = nla_data(info->attrs[NL80211_ATTR_MAC]); 4451 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]); 4452 4453 if (!rdev->ops->add_mpath) 4454 return -EOPNOTSUPP; 4455 4456 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT) 4457 return -EOPNOTSUPP; 4458 4459 return rdev_add_mpath(rdev, dev, dst, next_hop); 4460 } 4461 4462 static int nl80211_del_mpath(struct sk_buff *skb, struct genl_info *info) 4463 { 4464 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 4465 struct net_device *dev = info->user_ptr[1]; 4466 u8 *dst = NULL; 4467 4468 if (info->attrs[NL80211_ATTR_MAC]) 4469 dst = nla_data(info->attrs[NL80211_ATTR_MAC]); 4470 4471 if (!rdev->ops->del_mpath) 4472 return -EOPNOTSUPP; 4473 4474 return rdev_del_mpath(rdev, dev, dst); 4475 } 4476 4477 static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info) 4478 { 4479 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 4480 struct net_device *dev = info->user_ptr[1]; 4481 struct bss_parameters params; 4482 4483 memset(¶ms, 0, sizeof(params)); 4484 /* default to not changing parameters */ 4485 params.use_cts_prot = -1; 4486 params.use_short_preamble = -1; 4487 params.use_short_slot_time = -1; 4488 params.ap_isolate = -1; 4489 params.ht_opmode = -1; 4490 params.p2p_ctwindow = -1; 4491 params.p2p_opp_ps = -1; 4492 4493 if (info->attrs[NL80211_ATTR_BSS_CTS_PROT]) 4494 params.use_cts_prot = 4495 nla_get_u8(info->attrs[NL80211_ATTR_BSS_CTS_PROT]); 4496 if (info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]) 4497 params.use_short_preamble = 4498 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]); 4499 if (info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]) 4500 params.use_short_slot_time = 4501 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]); 4502 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) { 4503 params.basic_rates = 4504 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]); 4505 params.basic_rates_len = 4506 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]); 4507 } 4508 if (info->attrs[NL80211_ATTR_AP_ISOLATE]) 4509 params.ap_isolate = !!nla_get_u8(info->attrs[NL80211_ATTR_AP_ISOLATE]); 4510 if (info->attrs[NL80211_ATTR_BSS_HT_OPMODE]) 4511 params.ht_opmode = 4512 nla_get_u16(info->attrs[NL80211_ATTR_BSS_HT_OPMODE]); 4513 4514 if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) { 4515 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) 4516 return -EINVAL; 4517 params.p2p_ctwindow = 4518 nla_get_s8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]); 4519 if (params.p2p_ctwindow < 0) 4520 return -EINVAL; 4521 if (params.p2p_ctwindow != 0 && 4522 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN)) 4523 return -EINVAL; 4524 } 4525 4526 if (info->attrs[NL80211_ATTR_P2P_OPPPS]) { 4527 u8 tmp; 4528 4529 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) 4530 return -EINVAL; 4531 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]); 4532 if (tmp > 1) 4533 return -EINVAL; 4534 params.p2p_opp_ps = tmp; 4535 if (params.p2p_opp_ps && 4536 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS)) 4537 return -EINVAL; 4538 } 4539 4540 if (!rdev->ops->change_bss) 4541 return -EOPNOTSUPP; 4542 4543 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP && 4544 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) 4545 return -EOPNOTSUPP; 4546 4547 return rdev_change_bss(rdev, dev, ¶ms); 4548 } 4549 4550 static const struct nla_policy reg_rule_policy[NL80211_REG_RULE_ATTR_MAX + 1] = { 4551 [NL80211_ATTR_REG_RULE_FLAGS] = { .type = NLA_U32 }, 4552 [NL80211_ATTR_FREQ_RANGE_START] = { .type = NLA_U32 }, 4553 [NL80211_ATTR_FREQ_RANGE_END] = { .type = NLA_U32 }, 4554 [NL80211_ATTR_FREQ_RANGE_MAX_BW] = { .type = NLA_U32 }, 4555 [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN] = { .type = NLA_U32 }, 4556 [NL80211_ATTR_POWER_RULE_MAX_EIRP] = { .type = NLA_U32 }, 4557 }; 4558 4559 static int parse_reg_rule(struct nlattr *tb[], 4560 struct ieee80211_reg_rule *reg_rule) 4561 { 4562 struct ieee80211_freq_range *freq_range = ®_rule->freq_range; 4563 struct ieee80211_power_rule *power_rule = ®_rule->power_rule; 4564 4565 if (!tb[NL80211_ATTR_REG_RULE_FLAGS]) 4566 return -EINVAL; 4567 if (!tb[NL80211_ATTR_FREQ_RANGE_START]) 4568 return -EINVAL; 4569 if (!tb[NL80211_ATTR_FREQ_RANGE_END]) 4570 return -EINVAL; 4571 if (!tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]) 4572 return -EINVAL; 4573 if (!tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]) 4574 return -EINVAL; 4575 4576 reg_rule->flags = nla_get_u32(tb[NL80211_ATTR_REG_RULE_FLAGS]); 4577 4578 freq_range->start_freq_khz = 4579 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]); 4580 freq_range->end_freq_khz = 4581 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]); 4582 freq_range->max_bandwidth_khz = 4583 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]); 4584 4585 power_rule->max_eirp = 4586 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]); 4587 4588 if (tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]) 4589 power_rule->max_antenna_gain = 4590 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]); 4591 4592 return 0; 4593 } 4594 4595 static int nl80211_req_set_reg(struct sk_buff *skb, struct genl_info *info) 4596 { 4597 int r; 4598 char *data = NULL; 4599 enum nl80211_user_reg_hint_type user_reg_hint_type; 4600 4601 /* 4602 * You should only get this when cfg80211 hasn't yet initialized 4603 * completely when built-in to the kernel right between the time 4604 * window between nl80211_init() and regulatory_init(), if that is 4605 * even possible. 4606 */ 4607 if (unlikely(!rcu_access_pointer(cfg80211_regdomain))) 4608 return -EINPROGRESS; 4609 4610 if (!info->attrs[NL80211_ATTR_REG_ALPHA2]) 4611 return -EINVAL; 4612 4613 data = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]); 4614 4615 if (info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE]) 4616 user_reg_hint_type = 4617 nla_get_u32(info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE]); 4618 else 4619 user_reg_hint_type = NL80211_USER_REG_HINT_USER; 4620 4621 switch (user_reg_hint_type) { 4622 case NL80211_USER_REG_HINT_USER: 4623 case NL80211_USER_REG_HINT_CELL_BASE: 4624 break; 4625 default: 4626 return -EINVAL; 4627 } 4628 4629 r = regulatory_hint_user(data, user_reg_hint_type); 4630 4631 return r; 4632 } 4633 4634 static int nl80211_get_mesh_config(struct sk_buff *skb, 4635 struct genl_info *info) 4636 { 4637 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 4638 struct net_device *dev = info->user_ptr[1]; 4639 struct wireless_dev *wdev = dev->ieee80211_ptr; 4640 struct mesh_config cur_params; 4641 int err = 0; 4642 void *hdr; 4643 struct nlattr *pinfoattr; 4644 struct sk_buff *msg; 4645 4646 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) 4647 return -EOPNOTSUPP; 4648 4649 if (!rdev->ops->get_mesh_config) 4650 return -EOPNOTSUPP; 4651 4652 wdev_lock(wdev); 4653 /* If not connected, get default parameters */ 4654 if (!wdev->mesh_id_len) 4655 memcpy(&cur_params, &default_mesh_config, sizeof(cur_params)); 4656 else 4657 err = rdev_get_mesh_config(rdev, dev, &cur_params); 4658 wdev_unlock(wdev); 4659 4660 if (err) 4661 return err; 4662 4663 /* Draw up a netlink message to send back */ 4664 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 4665 if (!msg) 4666 return -ENOMEM; 4667 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0, 4668 NL80211_CMD_GET_MESH_CONFIG); 4669 if (!hdr) 4670 goto out; 4671 pinfoattr = nla_nest_start(msg, NL80211_ATTR_MESH_CONFIG); 4672 if (!pinfoattr) 4673 goto nla_put_failure; 4674 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) || 4675 nla_put_u16(msg, NL80211_MESHCONF_RETRY_TIMEOUT, 4676 cur_params.dot11MeshRetryTimeout) || 4677 nla_put_u16(msg, NL80211_MESHCONF_CONFIRM_TIMEOUT, 4678 cur_params.dot11MeshConfirmTimeout) || 4679 nla_put_u16(msg, NL80211_MESHCONF_HOLDING_TIMEOUT, 4680 cur_params.dot11MeshHoldingTimeout) || 4681 nla_put_u16(msg, NL80211_MESHCONF_MAX_PEER_LINKS, 4682 cur_params.dot11MeshMaxPeerLinks) || 4683 nla_put_u8(msg, NL80211_MESHCONF_MAX_RETRIES, 4684 cur_params.dot11MeshMaxRetries) || 4685 nla_put_u8(msg, NL80211_MESHCONF_TTL, 4686 cur_params.dot11MeshTTL) || 4687 nla_put_u8(msg, NL80211_MESHCONF_ELEMENT_TTL, 4688 cur_params.element_ttl) || 4689 nla_put_u8(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS, 4690 cur_params.auto_open_plinks) || 4691 nla_put_u32(msg, NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR, 4692 cur_params.dot11MeshNbrOffsetMaxNeighbor) || 4693 nla_put_u8(msg, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES, 4694 cur_params.dot11MeshHWMPmaxPREQretries) || 4695 nla_put_u32(msg, NL80211_MESHCONF_PATH_REFRESH_TIME, 4696 cur_params.path_refresh_time) || 4697 nla_put_u16(msg, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT, 4698 cur_params.min_discovery_timeout) || 4699 nla_put_u32(msg, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT, 4700 cur_params.dot11MeshHWMPactivePathTimeout) || 4701 nla_put_u16(msg, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL, 4702 cur_params.dot11MeshHWMPpreqMinInterval) || 4703 nla_put_u16(msg, NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL, 4704 cur_params.dot11MeshHWMPperrMinInterval) || 4705 nla_put_u16(msg, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME, 4706 cur_params.dot11MeshHWMPnetDiameterTraversalTime) || 4707 nla_put_u8(msg, NL80211_MESHCONF_HWMP_ROOTMODE, 4708 cur_params.dot11MeshHWMPRootMode) || 4709 nla_put_u16(msg, NL80211_MESHCONF_HWMP_RANN_INTERVAL, 4710 cur_params.dot11MeshHWMPRannInterval) || 4711 nla_put_u8(msg, NL80211_MESHCONF_GATE_ANNOUNCEMENTS, 4712 cur_params.dot11MeshGateAnnouncementProtocol) || 4713 nla_put_u8(msg, NL80211_MESHCONF_FORWARDING, 4714 cur_params.dot11MeshForwarding) || 4715 nla_put_u32(msg, NL80211_MESHCONF_RSSI_THRESHOLD, 4716 cur_params.rssi_threshold) || 4717 nla_put_u32(msg, NL80211_MESHCONF_HT_OPMODE, 4718 cur_params.ht_opmode) || 4719 nla_put_u32(msg, NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT, 4720 cur_params.dot11MeshHWMPactivePathToRootTimeout) || 4721 nla_put_u16(msg, NL80211_MESHCONF_HWMP_ROOT_INTERVAL, 4722 cur_params.dot11MeshHWMProotInterval) || 4723 nla_put_u16(msg, NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL, 4724 cur_params.dot11MeshHWMPconfirmationInterval) || 4725 nla_put_u32(msg, NL80211_MESHCONF_POWER_MODE, 4726 cur_params.power_mode) || 4727 nla_put_u16(msg, NL80211_MESHCONF_AWAKE_WINDOW, 4728 cur_params.dot11MeshAwakeWindowDuration) || 4729 nla_put_u32(msg, NL80211_MESHCONF_PLINK_TIMEOUT, 4730 cur_params.plink_timeout)) 4731 goto nla_put_failure; 4732 nla_nest_end(msg, pinfoattr); 4733 genlmsg_end(msg, hdr); 4734 return genlmsg_reply(msg, info); 4735 4736 nla_put_failure: 4737 genlmsg_cancel(msg, hdr); 4738 out: 4739 nlmsg_free(msg); 4740 return -ENOBUFS; 4741 } 4742 4743 static const struct nla_policy nl80211_meshconf_params_policy[NL80211_MESHCONF_ATTR_MAX+1] = { 4744 [NL80211_MESHCONF_RETRY_TIMEOUT] = { .type = NLA_U16 }, 4745 [NL80211_MESHCONF_CONFIRM_TIMEOUT] = { .type = NLA_U16 }, 4746 [NL80211_MESHCONF_HOLDING_TIMEOUT] = { .type = NLA_U16 }, 4747 [NL80211_MESHCONF_MAX_PEER_LINKS] = { .type = NLA_U16 }, 4748 [NL80211_MESHCONF_MAX_RETRIES] = { .type = NLA_U8 }, 4749 [NL80211_MESHCONF_TTL] = { .type = NLA_U8 }, 4750 [NL80211_MESHCONF_ELEMENT_TTL] = { .type = NLA_U8 }, 4751 [NL80211_MESHCONF_AUTO_OPEN_PLINKS] = { .type = NLA_U8 }, 4752 [NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR] = { .type = NLA_U32 }, 4753 [NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES] = { .type = NLA_U8 }, 4754 [NL80211_MESHCONF_PATH_REFRESH_TIME] = { .type = NLA_U32 }, 4755 [NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT] = { .type = NLA_U16 }, 4756 [NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT] = { .type = NLA_U32 }, 4757 [NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL] = { .type = NLA_U16 }, 4758 [NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL] = { .type = NLA_U16 }, 4759 [NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME] = { .type = NLA_U16 }, 4760 [NL80211_MESHCONF_HWMP_ROOTMODE] = { .type = NLA_U8 }, 4761 [NL80211_MESHCONF_HWMP_RANN_INTERVAL] = { .type = NLA_U16 }, 4762 [NL80211_MESHCONF_GATE_ANNOUNCEMENTS] = { .type = NLA_U8 }, 4763 [NL80211_MESHCONF_FORWARDING] = { .type = NLA_U8 }, 4764 [NL80211_MESHCONF_RSSI_THRESHOLD] = { .type = NLA_U32 }, 4765 [NL80211_MESHCONF_HT_OPMODE] = { .type = NLA_U16 }, 4766 [NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT] = { .type = NLA_U32 }, 4767 [NL80211_MESHCONF_HWMP_ROOT_INTERVAL] = { .type = NLA_U16 }, 4768 [NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL] = { .type = NLA_U16 }, 4769 [NL80211_MESHCONF_POWER_MODE] = { .type = NLA_U32 }, 4770 [NL80211_MESHCONF_AWAKE_WINDOW] = { .type = NLA_U16 }, 4771 [NL80211_MESHCONF_PLINK_TIMEOUT] = { .type = NLA_U32 }, 4772 }; 4773 4774 static const struct nla_policy 4775 nl80211_mesh_setup_params_policy[NL80211_MESH_SETUP_ATTR_MAX+1] = { 4776 [NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC] = { .type = NLA_U8 }, 4777 [NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL] = { .type = NLA_U8 }, 4778 [NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC] = { .type = NLA_U8 }, 4779 [NL80211_MESH_SETUP_USERSPACE_AUTH] = { .type = NLA_FLAG }, 4780 [NL80211_MESH_SETUP_AUTH_PROTOCOL] = { .type = NLA_U8 }, 4781 [NL80211_MESH_SETUP_USERSPACE_MPM] = { .type = NLA_FLAG }, 4782 [NL80211_MESH_SETUP_IE] = { .type = NLA_BINARY, 4783 .len = IEEE80211_MAX_DATA_LEN }, 4784 [NL80211_MESH_SETUP_USERSPACE_AMPE] = { .type = NLA_FLAG }, 4785 }; 4786 4787 static int nl80211_parse_mesh_config(struct genl_info *info, 4788 struct mesh_config *cfg, 4789 u32 *mask_out) 4790 { 4791 struct nlattr *tb[NL80211_MESHCONF_ATTR_MAX + 1]; 4792 u32 mask = 0; 4793 4794 #define FILL_IN_MESH_PARAM_IF_SET(tb, cfg, param, min, max, mask, attr, fn) \ 4795 do { \ 4796 if (tb[attr]) { \ 4797 if (fn(tb[attr]) < min || fn(tb[attr]) > max) \ 4798 return -EINVAL; \ 4799 cfg->param = fn(tb[attr]); \ 4800 mask |= (1 << (attr - 1)); \ 4801 } \ 4802 } while (0) 4803 4804 4805 if (!info->attrs[NL80211_ATTR_MESH_CONFIG]) 4806 return -EINVAL; 4807 if (nla_parse_nested(tb, NL80211_MESHCONF_ATTR_MAX, 4808 info->attrs[NL80211_ATTR_MESH_CONFIG], 4809 nl80211_meshconf_params_policy)) 4810 return -EINVAL; 4811 4812 /* This makes sure that there aren't more than 32 mesh config 4813 * parameters (otherwise our bitfield scheme would not work.) */ 4814 BUILD_BUG_ON(NL80211_MESHCONF_ATTR_MAX > 32); 4815 4816 /* Fill in the params struct */ 4817 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshRetryTimeout, 1, 255, 4818 mask, NL80211_MESHCONF_RETRY_TIMEOUT, 4819 nla_get_u16); 4820 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConfirmTimeout, 1, 255, 4821 mask, NL80211_MESHCONF_CONFIRM_TIMEOUT, 4822 nla_get_u16); 4823 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHoldingTimeout, 1, 255, 4824 mask, NL80211_MESHCONF_HOLDING_TIMEOUT, 4825 nla_get_u16); 4826 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxPeerLinks, 0, 255, 4827 mask, NL80211_MESHCONF_MAX_PEER_LINKS, 4828 nla_get_u16); 4829 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxRetries, 0, 16, 4830 mask, NL80211_MESHCONF_MAX_RETRIES, 4831 nla_get_u8); 4832 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshTTL, 1, 255, 4833 mask, NL80211_MESHCONF_TTL, nla_get_u8); 4834 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, element_ttl, 1, 255, 4835 mask, NL80211_MESHCONF_ELEMENT_TTL, 4836 nla_get_u8); 4837 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, auto_open_plinks, 0, 1, 4838 mask, NL80211_MESHCONF_AUTO_OPEN_PLINKS, 4839 nla_get_u8); 4840 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshNbrOffsetMaxNeighbor, 4841 1, 255, mask, 4842 NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR, 4843 nla_get_u32); 4844 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPmaxPREQretries, 0, 255, 4845 mask, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES, 4846 nla_get_u8); 4847 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, path_refresh_time, 1, 65535, 4848 mask, NL80211_MESHCONF_PATH_REFRESH_TIME, 4849 nla_get_u32); 4850 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, min_discovery_timeout, 1, 65535, 4851 mask, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT, 4852 nla_get_u16); 4853 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathTimeout, 4854 1, 65535, mask, 4855 NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT, 4856 nla_get_u32); 4857 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPpreqMinInterval, 4858 1, 65535, mask, 4859 NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL, 4860 nla_get_u16); 4861 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPperrMinInterval, 4862 1, 65535, mask, 4863 NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL, 4864 nla_get_u16); 4865 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, 4866 dot11MeshHWMPnetDiameterTraversalTime, 4867 1, 65535, mask, 4868 NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME, 4869 nla_get_u16); 4870 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRootMode, 0, 4, 4871 mask, NL80211_MESHCONF_HWMP_ROOTMODE, 4872 nla_get_u8); 4873 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRannInterval, 1, 65535, 4874 mask, NL80211_MESHCONF_HWMP_RANN_INTERVAL, 4875 nla_get_u16); 4876 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, 4877 dot11MeshGateAnnouncementProtocol, 0, 1, 4878 mask, NL80211_MESHCONF_GATE_ANNOUNCEMENTS, 4879 nla_get_u8); 4880 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshForwarding, 0, 1, 4881 mask, NL80211_MESHCONF_FORWARDING, 4882 nla_get_u8); 4883 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, rssi_threshold, -255, 0, 4884 mask, NL80211_MESHCONF_RSSI_THRESHOLD, 4885 nla_get_s32); 4886 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, ht_opmode, 0, 16, 4887 mask, NL80211_MESHCONF_HT_OPMODE, 4888 nla_get_u16); 4889 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathToRootTimeout, 4890 1, 65535, mask, 4891 NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT, 4892 nla_get_u32); 4893 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMProotInterval, 1, 65535, 4894 mask, NL80211_MESHCONF_HWMP_ROOT_INTERVAL, 4895 nla_get_u16); 4896 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, 4897 dot11MeshHWMPconfirmationInterval, 4898 1, 65535, mask, 4899 NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL, 4900 nla_get_u16); 4901 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, power_mode, 4902 NL80211_MESH_POWER_ACTIVE, 4903 NL80211_MESH_POWER_MAX, 4904 mask, NL80211_MESHCONF_POWER_MODE, 4905 nla_get_u32); 4906 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshAwakeWindowDuration, 4907 0, 65535, mask, 4908 NL80211_MESHCONF_AWAKE_WINDOW, nla_get_u16); 4909 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, plink_timeout, 1, 0xffffffff, 4910 mask, NL80211_MESHCONF_PLINK_TIMEOUT, 4911 nla_get_u32); 4912 if (mask_out) 4913 *mask_out = mask; 4914 4915 return 0; 4916 4917 #undef FILL_IN_MESH_PARAM_IF_SET 4918 } 4919 4920 static int nl80211_parse_mesh_setup(struct genl_info *info, 4921 struct mesh_setup *setup) 4922 { 4923 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 4924 struct nlattr *tb[NL80211_MESH_SETUP_ATTR_MAX + 1]; 4925 4926 if (!info->attrs[NL80211_ATTR_MESH_SETUP]) 4927 return -EINVAL; 4928 if (nla_parse_nested(tb, NL80211_MESH_SETUP_ATTR_MAX, 4929 info->attrs[NL80211_ATTR_MESH_SETUP], 4930 nl80211_mesh_setup_params_policy)) 4931 return -EINVAL; 4932 4933 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC]) 4934 setup->sync_method = 4935 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])) ? 4936 IEEE80211_SYNC_METHOD_VENDOR : 4937 IEEE80211_SYNC_METHOD_NEIGHBOR_OFFSET; 4938 4939 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL]) 4940 setup->path_sel_proto = 4941 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])) ? 4942 IEEE80211_PATH_PROTOCOL_VENDOR : 4943 IEEE80211_PATH_PROTOCOL_HWMP; 4944 4945 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC]) 4946 setup->path_metric = 4947 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])) ? 4948 IEEE80211_PATH_METRIC_VENDOR : 4949 IEEE80211_PATH_METRIC_AIRTIME; 4950 4951 4952 if (tb[NL80211_MESH_SETUP_IE]) { 4953 struct nlattr *ieattr = 4954 tb[NL80211_MESH_SETUP_IE]; 4955 if (!is_valid_ie_attr(ieattr)) 4956 return -EINVAL; 4957 setup->ie = nla_data(ieattr); 4958 setup->ie_len = nla_len(ieattr); 4959 } 4960 if (tb[NL80211_MESH_SETUP_USERSPACE_MPM] && 4961 !(rdev->wiphy.features & NL80211_FEATURE_USERSPACE_MPM)) 4962 return -EINVAL; 4963 setup->user_mpm = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_MPM]); 4964 setup->is_authenticated = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AUTH]); 4965 setup->is_secure = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AMPE]); 4966 if (setup->is_secure) 4967 setup->user_mpm = true; 4968 4969 if (tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]) { 4970 if (!setup->user_mpm) 4971 return -EINVAL; 4972 setup->auth_id = 4973 nla_get_u8(tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]); 4974 } 4975 4976 return 0; 4977 } 4978 4979 static int nl80211_update_mesh_config(struct sk_buff *skb, 4980 struct genl_info *info) 4981 { 4982 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 4983 struct net_device *dev = info->user_ptr[1]; 4984 struct wireless_dev *wdev = dev->ieee80211_ptr; 4985 struct mesh_config cfg; 4986 u32 mask; 4987 int err; 4988 4989 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) 4990 return -EOPNOTSUPP; 4991 4992 if (!rdev->ops->update_mesh_config) 4993 return -EOPNOTSUPP; 4994 4995 err = nl80211_parse_mesh_config(info, &cfg, &mask); 4996 if (err) 4997 return err; 4998 4999 wdev_lock(wdev); 5000 if (!wdev->mesh_id_len) 5001 err = -ENOLINK; 5002 5003 if (!err) 5004 err = rdev_update_mesh_config(rdev, dev, mask, &cfg); 5005 5006 wdev_unlock(wdev); 5007 5008 return err; 5009 } 5010 5011 static int nl80211_get_reg(struct sk_buff *skb, struct genl_info *info) 5012 { 5013 const struct ieee80211_regdomain *regdom; 5014 struct sk_buff *msg; 5015 void *hdr = NULL; 5016 struct nlattr *nl_reg_rules; 5017 unsigned int i; 5018 5019 if (!cfg80211_regdomain) 5020 return -EINVAL; 5021 5022 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 5023 if (!msg) 5024 return -ENOBUFS; 5025 5026 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0, 5027 NL80211_CMD_GET_REG); 5028 if (!hdr) 5029 goto put_failure; 5030 5031 if (reg_last_request_cell_base() && 5032 nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE, 5033 NL80211_USER_REG_HINT_CELL_BASE)) 5034 goto nla_put_failure; 5035 5036 rcu_read_lock(); 5037 regdom = rcu_dereference(cfg80211_regdomain); 5038 5039 if (nla_put_string(msg, NL80211_ATTR_REG_ALPHA2, regdom->alpha2) || 5040 (regdom->dfs_region && 5041 nla_put_u8(msg, NL80211_ATTR_DFS_REGION, regdom->dfs_region))) 5042 goto nla_put_failure_rcu; 5043 5044 nl_reg_rules = nla_nest_start(msg, NL80211_ATTR_REG_RULES); 5045 if (!nl_reg_rules) 5046 goto nla_put_failure_rcu; 5047 5048 for (i = 0; i < regdom->n_reg_rules; i++) { 5049 struct nlattr *nl_reg_rule; 5050 const struct ieee80211_reg_rule *reg_rule; 5051 const struct ieee80211_freq_range *freq_range; 5052 const struct ieee80211_power_rule *power_rule; 5053 5054 reg_rule = ®dom->reg_rules[i]; 5055 freq_range = ®_rule->freq_range; 5056 power_rule = ®_rule->power_rule; 5057 5058 nl_reg_rule = nla_nest_start(msg, i); 5059 if (!nl_reg_rule) 5060 goto nla_put_failure_rcu; 5061 5062 if (nla_put_u32(msg, NL80211_ATTR_REG_RULE_FLAGS, 5063 reg_rule->flags) || 5064 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_START, 5065 freq_range->start_freq_khz) || 5066 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_END, 5067 freq_range->end_freq_khz) || 5068 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_MAX_BW, 5069 freq_range->max_bandwidth_khz) || 5070 nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN, 5071 power_rule->max_antenna_gain) || 5072 nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_EIRP, 5073 power_rule->max_eirp)) 5074 goto nla_put_failure_rcu; 5075 5076 nla_nest_end(msg, nl_reg_rule); 5077 } 5078 rcu_read_unlock(); 5079 5080 nla_nest_end(msg, nl_reg_rules); 5081 5082 genlmsg_end(msg, hdr); 5083 return genlmsg_reply(msg, info); 5084 5085 nla_put_failure_rcu: 5086 rcu_read_unlock(); 5087 nla_put_failure: 5088 genlmsg_cancel(msg, hdr); 5089 put_failure: 5090 nlmsg_free(msg); 5091 return -EMSGSIZE; 5092 } 5093 5094 static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info) 5095 { 5096 struct nlattr *tb[NL80211_REG_RULE_ATTR_MAX + 1]; 5097 struct nlattr *nl_reg_rule; 5098 char *alpha2 = NULL; 5099 int rem_reg_rules = 0, r = 0; 5100 u32 num_rules = 0, rule_idx = 0, size_of_regd; 5101 u8 dfs_region = 0; 5102 struct ieee80211_regdomain *rd = NULL; 5103 5104 if (!info->attrs[NL80211_ATTR_REG_ALPHA2]) 5105 return -EINVAL; 5106 5107 if (!info->attrs[NL80211_ATTR_REG_RULES]) 5108 return -EINVAL; 5109 5110 alpha2 = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]); 5111 5112 if (info->attrs[NL80211_ATTR_DFS_REGION]) 5113 dfs_region = nla_get_u8(info->attrs[NL80211_ATTR_DFS_REGION]); 5114 5115 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES], 5116 rem_reg_rules) { 5117 num_rules++; 5118 if (num_rules > NL80211_MAX_SUPP_REG_RULES) 5119 return -EINVAL; 5120 } 5121 5122 size_of_regd = sizeof(struct ieee80211_regdomain) + 5123 num_rules * sizeof(struct ieee80211_reg_rule); 5124 5125 rd = kzalloc(size_of_regd, GFP_KERNEL); 5126 if (!rd) 5127 return -ENOMEM; 5128 5129 rd->n_reg_rules = num_rules; 5130 rd->alpha2[0] = alpha2[0]; 5131 rd->alpha2[1] = alpha2[1]; 5132 5133 /* 5134 * Disable DFS master mode if the DFS region was 5135 * not supported or known on this kernel. 5136 */ 5137 if (reg_supported_dfs_region(dfs_region)) 5138 rd->dfs_region = dfs_region; 5139 5140 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES], 5141 rem_reg_rules) { 5142 nla_parse(tb, NL80211_REG_RULE_ATTR_MAX, 5143 nla_data(nl_reg_rule), nla_len(nl_reg_rule), 5144 reg_rule_policy); 5145 r = parse_reg_rule(tb, &rd->reg_rules[rule_idx]); 5146 if (r) 5147 goto bad_reg; 5148 5149 rule_idx++; 5150 5151 if (rule_idx > NL80211_MAX_SUPP_REG_RULES) { 5152 r = -EINVAL; 5153 goto bad_reg; 5154 } 5155 } 5156 5157 r = set_regdom(rd); 5158 /* set_regdom took ownership */ 5159 rd = NULL; 5160 5161 bad_reg: 5162 kfree(rd); 5163 return r; 5164 } 5165 5166 static int validate_scan_freqs(struct nlattr *freqs) 5167 { 5168 struct nlattr *attr1, *attr2; 5169 int n_channels = 0, tmp1, tmp2; 5170 5171 nla_for_each_nested(attr1, freqs, tmp1) { 5172 n_channels++; 5173 /* 5174 * Some hardware has a limited channel list for 5175 * scanning, and it is pretty much nonsensical 5176 * to scan for a channel twice, so disallow that 5177 * and don't require drivers to check that the 5178 * channel list they get isn't longer than what 5179 * they can scan, as long as they can scan all 5180 * the channels they registered at once. 5181 */ 5182 nla_for_each_nested(attr2, freqs, tmp2) 5183 if (attr1 != attr2 && 5184 nla_get_u32(attr1) == nla_get_u32(attr2)) 5185 return 0; 5186 } 5187 5188 return n_channels; 5189 } 5190 5191 static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info) 5192 { 5193 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 5194 struct wireless_dev *wdev = info->user_ptr[1]; 5195 struct cfg80211_scan_request *request; 5196 struct nlattr *attr; 5197 struct wiphy *wiphy; 5198 int err, tmp, n_ssids = 0, n_channels, i; 5199 size_t ie_len; 5200 5201 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE])) 5202 return -EINVAL; 5203 5204 wiphy = &rdev->wiphy; 5205 5206 if (!rdev->ops->scan) 5207 return -EOPNOTSUPP; 5208 5209 if (rdev->scan_req) { 5210 err = -EBUSY; 5211 goto unlock; 5212 } 5213 5214 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) { 5215 n_channels = validate_scan_freqs( 5216 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]); 5217 if (!n_channels) { 5218 err = -EINVAL; 5219 goto unlock; 5220 } 5221 } else { 5222 enum ieee80211_band band; 5223 n_channels = 0; 5224 5225 for (band = 0; band < IEEE80211_NUM_BANDS; band++) 5226 if (wiphy->bands[band]) 5227 n_channels += wiphy->bands[band]->n_channels; 5228 } 5229 5230 if (info->attrs[NL80211_ATTR_SCAN_SSIDS]) 5231 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) 5232 n_ssids++; 5233 5234 if (n_ssids > wiphy->max_scan_ssids) { 5235 err = -EINVAL; 5236 goto unlock; 5237 } 5238 5239 if (info->attrs[NL80211_ATTR_IE]) 5240 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); 5241 else 5242 ie_len = 0; 5243 5244 if (ie_len > wiphy->max_scan_ie_len) { 5245 err = -EINVAL; 5246 goto unlock; 5247 } 5248 5249 request = kzalloc(sizeof(*request) 5250 + sizeof(*request->ssids) * n_ssids 5251 + sizeof(*request->channels) * n_channels 5252 + ie_len, GFP_KERNEL); 5253 if (!request) { 5254 err = -ENOMEM; 5255 goto unlock; 5256 } 5257 5258 if (n_ssids) 5259 request->ssids = (void *)&request->channels[n_channels]; 5260 request->n_ssids = n_ssids; 5261 if (ie_len) { 5262 if (request->ssids) 5263 request->ie = (void *)(request->ssids + n_ssids); 5264 else 5265 request->ie = (void *)(request->channels + n_channels); 5266 } 5267 5268 i = 0; 5269 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) { 5270 /* user specified, bail out if channel not found */ 5271 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_FREQUENCIES], tmp) { 5272 struct ieee80211_channel *chan; 5273 5274 chan = ieee80211_get_channel(wiphy, nla_get_u32(attr)); 5275 5276 if (!chan) { 5277 err = -EINVAL; 5278 goto out_free; 5279 } 5280 5281 /* ignore disabled channels */ 5282 if (chan->flags & IEEE80211_CHAN_DISABLED) 5283 continue; 5284 5285 request->channels[i] = chan; 5286 i++; 5287 } 5288 } else { 5289 enum ieee80211_band band; 5290 5291 /* all channels */ 5292 for (band = 0; band < IEEE80211_NUM_BANDS; band++) { 5293 int j; 5294 if (!wiphy->bands[band]) 5295 continue; 5296 for (j = 0; j < wiphy->bands[band]->n_channels; j++) { 5297 struct ieee80211_channel *chan; 5298 5299 chan = &wiphy->bands[band]->channels[j]; 5300 5301 if (chan->flags & IEEE80211_CHAN_DISABLED) 5302 continue; 5303 5304 request->channels[i] = chan; 5305 i++; 5306 } 5307 } 5308 } 5309 5310 if (!i) { 5311 err = -EINVAL; 5312 goto out_free; 5313 } 5314 5315 request->n_channels = i; 5316 5317 i = 0; 5318 if (info->attrs[NL80211_ATTR_SCAN_SSIDS]) { 5319 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) { 5320 if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) { 5321 err = -EINVAL; 5322 goto out_free; 5323 } 5324 request->ssids[i].ssid_len = nla_len(attr); 5325 memcpy(request->ssids[i].ssid, nla_data(attr), nla_len(attr)); 5326 i++; 5327 } 5328 } 5329 5330 if (info->attrs[NL80211_ATTR_IE]) { 5331 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); 5332 memcpy((void *)request->ie, 5333 nla_data(info->attrs[NL80211_ATTR_IE]), 5334 request->ie_len); 5335 } 5336 5337 for (i = 0; i < IEEE80211_NUM_BANDS; i++) 5338 if (wiphy->bands[i]) 5339 request->rates[i] = 5340 (1 << wiphy->bands[i]->n_bitrates) - 1; 5341 5342 if (info->attrs[NL80211_ATTR_SCAN_SUPP_RATES]) { 5343 nla_for_each_nested(attr, 5344 info->attrs[NL80211_ATTR_SCAN_SUPP_RATES], 5345 tmp) { 5346 enum ieee80211_band band = nla_type(attr); 5347 5348 if (band < 0 || band >= IEEE80211_NUM_BANDS) { 5349 err = -EINVAL; 5350 goto out_free; 5351 } 5352 err = ieee80211_get_ratemask(wiphy->bands[band], 5353 nla_data(attr), 5354 nla_len(attr), 5355 &request->rates[band]); 5356 if (err) 5357 goto out_free; 5358 } 5359 } 5360 5361 if (info->attrs[NL80211_ATTR_SCAN_FLAGS]) { 5362 request->flags = nla_get_u32( 5363 info->attrs[NL80211_ATTR_SCAN_FLAGS]); 5364 if (((request->flags & NL80211_SCAN_FLAG_LOW_PRIORITY) && 5365 !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) || 5366 ((request->flags & NL80211_SCAN_FLAG_FLUSH) && 5367 !(wiphy->features & NL80211_FEATURE_SCAN_FLUSH))) { 5368 err = -EOPNOTSUPP; 5369 goto out_free; 5370 } 5371 } 5372 5373 request->no_cck = 5374 nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]); 5375 5376 request->wdev = wdev; 5377 request->wiphy = &rdev->wiphy; 5378 request->scan_start = jiffies; 5379 5380 rdev->scan_req = request; 5381 err = rdev_scan(rdev, request); 5382 5383 if (!err) { 5384 nl80211_send_scan_start(rdev, wdev); 5385 if (wdev->netdev) 5386 dev_hold(wdev->netdev); 5387 } else { 5388 out_free: 5389 rdev->scan_req = NULL; 5390 kfree(request); 5391 } 5392 5393 unlock: 5394 return err; 5395 } 5396 5397 static int nl80211_start_sched_scan(struct sk_buff *skb, 5398 struct genl_info *info) 5399 { 5400 struct cfg80211_sched_scan_request *request; 5401 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 5402 struct net_device *dev = info->user_ptr[1]; 5403 struct nlattr *attr; 5404 struct wiphy *wiphy; 5405 int err, tmp, n_ssids = 0, n_match_sets = 0, n_channels, i; 5406 u32 interval; 5407 enum ieee80211_band band; 5408 size_t ie_len; 5409 struct nlattr *tb[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1]; 5410 5411 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) || 5412 !rdev->ops->sched_scan_start) 5413 return -EOPNOTSUPP; 5414 5415 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE])) 5416 return -EINVAL; 5417 5418 if (!info->attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL]) 5419 return -EINVAL; 5420 5421 interval = nla_get_u32(info->attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL]); 5422 if (interval == 0) 5423 return -EINVAL; 5424 5425 wiphy = &rdev->wiphy; 5426 5427 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) { 5428 n_channels = validate_scan_freqs( 5429 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]); 5430 if (!n_channels) 5431 return -EINVAL; 5432 } else { 5433 n_channels = 0; 5434 5435 for (band = 0; band < IEEE80211_NUM_BANDS; band++) 5436 if (wiphy->bands[band]) 5437 n_channels += wiphy->bands[band]->n_channels; 5438 } 5439 5440 if (info->attrs[NL80211_ATTR_SCAN_SSIDS]) 5441 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], 5442 tmp) 5443 n_ssids++; 5444 5445 if (n_ssids > wiphy->max_sched_scan_ssids) 5446 return -EINVAL; 5447 5448 if (info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) 5449 nla_for_each_nested(attr, 5450 info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH], 5451 tmp) 5452 n_match_sets++; 5453 5454 if (n_match_sets > wiphy->max_match_sets) 5455 return -EINVAL; 5456 5457 if (info->attrs[NL80211_ATTR_IE]) 5458 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); 5459 else 5460 ie_len = 0; 5461 5462 if (ie_len > wiphy->max_sched_scan_ie_len) 5463 return -EINVAL; 5464 5465 if (rdev->sched_scan_req) { 5466 err = -EINPROGRESS; 5467 goto out; 5468 } 5469 5470 request = kzalloc(sizeof(*request) 5471 + sizeof(*request->ssids) * n_ssids 5472 + sizeof(*request->match_sets) * n_match_sets 5473 + sizeof(*request->channels) * n_channels 5474 + ie_len, GFP_KERNEL); 5475 if (!request) { 5476 err = -ENOMEM; 5477 goto out; 5478 } 5479 5480 if (n_ssids) 5481 request->ssids = (void *)&request->channels[n_channels]; 5482 request->n_ssids = n_ssids; 5483 if (ie_len) { 5484 if (request->ssids) 5485 request->ie = (void *)(request->ssids + n_ssids); 5486 else 5487 request->ie = (void *)(request->channels + n_channels); 5488 } 5489 5490 if (n_match_sets) { 5491 if (request->ie) 5492 request->match_sets = (void *)(request->ie + ie_len); 5493 else if (request->ssids) 5494 request->match_sets = 5495 (void *)(request->ssids + n_ssids); 5496 else 5497 request->match_sets = 5498 (void *)(request->channels + n_channels); 5499 } 5500 request->n_match_sets = n_match_sets; 5501 5502 i = 0; 5503 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) { 5504 /* user specified, bail out if channel not found */ 5505 nla_for_each_nested(attr, 5506 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES], 5507 tmp) { 5508 struct ieee80211_channel *chan; 5509 5510 chan = ieee80211_get_channel(wiphy, nla_get_u32(attr)); 5511 5512 if (!chan) { 5513 err = -EINVAL; 5514 goto out_free; 5515 } 5516 5517 /* ignore disabled channels */ 5518 if (chan->flags & IEEE80211_CHAN_DISABLED) 5519 continue; 5520 5521 request->channels[i] = chan; 5522 i++; 5523 } 5524 } else { 5525 /* all channels */ 5526 for (band = 0; band < IEEE80211_NUM_BANDS; band++) { 5527 int j; 5528 if (!wiphy->bands[band]) 5529 continue; 5530 for (j = 0; j < wiphy->bands[band]->n_channels; j++) { 5531 struct ieee80211_channel *chan; 5532 5533 chan = &wiphy->bands[band]->channels[j]; 5534 5535 if (chan->flags & IEEE80211_CHAN_DISABLED) 5536 continue; 5537 5538 request->channels[i] = chan; 5539 i++; 5540 } 5541 } 5542 } 5543 5544 if (!i) { 5545 err = -EINVAL; 5546 goto out_free; 5547 } 5548 5549 request->n_channels = i; 5550 5551 i = 0; 5552 if (info->attrs[NL80211_ATTR_SCAN_SSIDS]) { 5553 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], 5554 tmp) { 5555 if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) { 5556 err = -EINVAL; 5557 goto out_free; 5558 } 5559 request->ssids[i].ssid_len = nla_len(attr); 5560 memcpy(request->ssids[i].ssid, nla_data(attr), 5561 nla_len(attr)); 5562 i++; 5563 } 5564 } 5565 5566 i = 0; 5567 if (info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) { 5568 nla_for_each_nested(attr, 5569 info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH], 5570 tmp) { 5571 struct nlattr *ssid, *rssi; 5572 5573 nla_parse(tb, NL80211_SCHED_SCAN_MATCH_ATTR_MAX, 5574 nla_data(attr), nla_len(attr), 5575 nl80211_match_policy); 5576 ssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID]; 5577 if (ssid) { 5578 if (nla_len(ssid) > IEEE80211_MAX_SSID_LEN) { 5579 err = -EINVAL; 5580 goto out_free; 5581 } 5582 memcpy(request->match_sets[i].ssid.ssid, 5583 nla_data(ssid), nla_len(ssid)); 5584 request->match_sets[i].ssid.ssid_len = 5585 nla_len(ssid); 5586 } 5587 rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI]; 5588 if (rssi) 5589 request->rssi_thold = nla_get_u32(rssi); 5590 else 5591 request->rssi_thold = 5592 NL80211_SCAN_RSSI_THOLD_OFF; 5593 i++; 5594 } 5595 } 5596 5597 if (info->attrs[NL80211_ATTR_IE]) { 5598 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); 5599 memcpy((void *)request->ie, 5600 nla_data(info->attrs[NL80211_ATTR_IE]), 5601 request->ie_len); 5602 } 5603 5604 if (info->attrs[NL80211_ATTR_SCAN_FLAGS]) { 5605 request->flags = nla_get_u32( 5606 info->attrs[NL80211_ATTR_SCAN_FLAGS]); 5607 if (((request->flags & NL80211_SCAN_FLAG_LOW_PRIORITY) && 5608 !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) || 5609 ((request->flags & NL80211_SCAN_FLAG_FLUSH) && 5610 !(wiphy->features & NL80211_FEATURE_SCAN_FLUSH))) { 5611 err = -EOPNOTSUPP; 5612 goto out_free; 5613 } 5614 } 5615 5616 request->dev = dev; 5617 request->wiphy = &rdev->wiphy; 5618 request->interval = interval; 5619 request->scan_start = jiffies; 5620 5621 err = rdev_sched_scan_start(rdev, dev, request); 5622 if (!err) { 5623 rdev->sched_scan_req = request; 5624 nl80211_send_sched_scan(rdev, dev, 5625 NL80211_CMD_START_SCHED_SCAN); 5626 goto out; 5627 } 5628 5629 out_free: 5630 kfree(request); 5631 out: 5632 return err; 5633 } 5634 5635 static int nl80211_stop_sched_scan(struct sk_buff *skb, 5636 struct genl_info *info) 5637 { 5638 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 5639 5640 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) || 5641 !rdev->ops->sched_scan_stop) 5642 return -EOPNOTSUPP; 5643 5644 return __cfg80211_stop_sched_scan(rdev, false); 5645 } 5646 5647 static int nl80211_start_radar_detection(struct sk_buff *skb, 5648 struct genl_info *info) 5649 { 5650 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 5651 struct net_device *dev = info->user_ptr[1]; 5652 struct wireless_dev *wdev = dev->ieee80211_ptr; 5653 struct cfg80211_chan_def chandef; 5654 int err; 5655 5656 err = nl80211_parse_chandef(rdev, info, &chandef); 5657 if (err) 5658 return err; 5659 5660 if (netif_carrier_ok(dev)) 5661 return -EBUSY; 5662 5663 if (wdev->cac_started) 5664 return -EBUSY; 5665 5666 err = cfg80211_chandef_dfs_required(wdev->wiphy, &chandef); 5667 if (err < 0) 5668 return err; 5669 5670 if (err == 0) 5671 return -EINVAL; 5672 5673 if (chandef.chan->dfs_state != NL80211_DFS_USABLE) 5674 return -EINVAL; 5675 5676 if (!rdev->ops->start_radar_detection) 5677 return -EOPNOTSUPP; 5678 5679 err = cfg80211_can_use_iftype_chan(rdev, wdev, wdev->iftype, 5680 chandef.chan, CHAN_MODE_SHARED, 5681 BIT(chandef.width)); 5682 if (err) 5683 return err; 5684 5685 err = rdev->ops->start_radar_detection(&rdev->wiphy, dev, &chandef); 5686 if (!err) { 5687 wdev->channel = chandef.chan; 5688 wdev->cac_started = true; 5689 wdev->cac_start_time = jiffies; 5690 } 5691 return err; 5692 } 5693 5694 static int nl80211_channel_switch(struct sk_buff *skb, struct genl_info *info) 5695 { 5696 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 5697 struct net_device *dev = info->user_ptr[1]; 5698 struct wireless_dev *wdev = dev->ieee80211_ptr; 5699 struct cfg80211_csa_settings params; 5700 /* csa_attrs is defined static to avoid waste of stack size - this 5701 * function is called under RTNL lock, so this should not be a problem. 5702 */ 5703 static struct nlattr *csa_attrs[NL80211_ATTR_MAX+1]; 5704 u8 radar_detect_width = 0; 5705 int err; 5706 bool need_new_beacon = false; 5707 5708 if (!rdev->ops->channel_switch || 5709 !(rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH)) 5710 return -EOPNOTSUPP; 5711 5712 switch (dev->ieee80211_ptr->iftype) { 5713 case NL80211_IFTYPE_AP: 5714 case NL80211_IFTYPE_P2P_GO: 5715 need_new_beacon = true; 5716 5717 /* useless if AP is not running */ 5718 if (!wdev->beacon_interval) 5719 return -EINVAL; 5720 break; 5721 case NL80211_IFTYPE_ADHOC: 5722 case NL80211_IFTYPE_MESH_POINT: 5723 break; 5724 default: 5725 return -EOPNOTSUPP; 5726 } 5727 5728 memset(¶ms, 0, sizeof(params)); 5729 5730 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] || 5731 !info->attrs[NL80211_ATTR_CH_SWITCH_COUNT]) 5732 return -EINVAL; 5733 5734 /* only important for AP, IBSS and mesh create IEs internally */ 5735 if (need_new_beacon && !info->attrs[NL80211_ATTR_CSA_IES]) 5736 return -EINVAL; 5737 5738 params.count = nla_get_u32(info->attrs[NL80211_ATTR_CH_SWITCH_COUNT]); 5739 5740 if (!need_new_beacon) 5741 goto skip_beacons; 5742 5743 err = nl80211_parse_beacon(info->attrs, ¶ms.beacon_after); 5744 if (err) 5745 return err; 5746 5747 err = nla_parse_nested(csa_attrs, NL80211_ATTR_MAX, 5748 info->attrs[NL80211_ATTR_CSA_IES], 5749 nl80211_policy); 5750 if (err) 5751 return err; 5752 5753 err = nl80211_parse_beacon(csa_attrs, ¶ms.beacon_csa); 5754 if (err) 5755 return err; 5756 5757 if (!csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]) 5758 return -EINVAL; 5759 5760 params.counter_offset_beacon = 5761 nla_get_u16(csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]); 5762 if (params.counter_offset_beacon >= params.beacon_csa.tail_len) 5763 return -EINVAL; 5764 5765 /* sanity check - counters should be the same */ 5766 if (params.beacon_csa.tail[params.counter_offset_beacon] != 5767 params.count) 5768 return -EINVAL; 5769 5770 if (csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]) { 5771 params.counter_offset_presp = 5772 nla_get_u16(csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]); 5773 if (params.counter_offset_presp >= 5774 params.beacon_csa.probe_resp_len) 5775 return -EINVAL; 5776 5777 if (params.beacon_csa.probe_resp[params.counter_offset_presp] != 5778 params.count) 5779 return -EINVAL; 5780 } 5781 5782 skip_beacons: 5783 err = nl80211_parse_chandef(rdev, info, ¶ms.chandef); 5784 if (err) 5785 return err; 5786 5787 if (!cfg80211_reg_can_beacon(&rdev->wiphy, ¶ms.chandef)) 5788 return -EINVAL; 5789 5790 if (dev->ieee80211_ptr->iftype == NL80211_IFTYPE_AP || 5791 dev->ieee80211_ptr->iftype == NL80211_IFTYPE_P2P_GO || 5792 dev->ieee80211_ptr->iftype == NL80211_IFTYPE_ADHOC) { 5793 err = cfg80211_chandef_dfs_required(wdev->wiphy, 5794 ¶ms.chandef); 5795 if (err < 0) { 5796 return err; 5797 } else if (err) { 5798 radar_detect_width = BIT(params.chandef.width); 5799 params.radar_required = true; 5800 } 5801 } 5802 5803 err = cfg80211_can_use_iftype_chan(rdev, wdev, wdev->iftype, 5804 params.chandef.chan, 5805 CHAN_MODE_SHARED, 5806 radar_detect_width); 5807 if (err) 5808 return err; 5809 5810 if (info->attrs[NL80211_ATTR_CH_SWITCH_BLOCK_TX]) 5811 params.block_tx = true; 5812 5813 return rdev_channel_switch(rdev, dev, ¶ms); 5814 } 5815 5816 static int nl80211_send_bss(struct sk_buff *msg, struct netlink_callback *cb, 5817 u32 seq, int flags, 5818 struct cfg80211_registered_device *rdev, 5819 struct wireless_dev *wdev, 5820 struct cfg80211_internal_bss *intbss) 5821 { 5822 struct cfg80211_bss *res = &intbss->pub; 5823 const struct cfg80211_bss_ies *ies; 5824 void *hdr; 5825 struct nlattr *bss; 5826 bool tsf = false; 5827 5828 ASSERT_WDEV_LOCK(wdev); 5829 5830 hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags, 5831 NL80211_CMD_NEW_SCAN_RESULTS); 5832 if (!hdr) 5833 return -1; 5834 5835 genl_dump_check_consistent(cb, hdr, &nl80211_fam); 5836 5837 if (nla_put_u32(msg, NL80211_ATTR_GENERATION, rdev->bss_generation)) 5838 goto nla_put_failure; 5839 if (wdev->netdev && 5840 nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex)) 5841 goto nla_put_failure; 5842 if (nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev))) 5843 goto nla_put_failure; 5844 5845 bss = nla_nest_start(msg, NL80211_ATTR_BSS); 5846 if (!bss) 5847 goto nla_put_failure; 5848 if ((!is_zero_ether_addr(res->bssid) && 5849 nla_put(msg, NL80211_BSS_BSSID, ETH_ALEN, res->bssid))) 5850 goto nla_put_failure; 5851 5852 rcu_read_lock(); 5853 ies = rcu_dereference(res->ies); 5854 if (ies) { 5855 if (nla_put_u64(msg, NL80211_BSS_TSF, ies->tsf)) 5856 goto fail_unlock_rcu; 5857 tsf = true; 5858 if (ies->len && nla_put(msg, NL80211_BSS_INFORMATION_ELEMENTS, 5859 ies->len, ies->data)) 5860 goto fail_unlock_rcu; 5861 } 5862 ies = rcu_dereference(res->beacon_ies); 5863 if (ies) { 5864 if (!tsf && nla_put_u64(msg, NL80211_BSS_TSF, ies->tsf)) 5865 goto fail_unlock_rcu; 5866 if (ies->len && nla_put(msg, NL80211_BSS_BEACON_IES, 5867 ies->len, ies->data)) 5868 goto fail_unlock_rcu; 5869 } 5870 rcu_read_unlock(); 5871 5872 if (res->beacon_interval && 5873 nla_put_u16(msg, NL80211_BSS_BEACON_INTERVAL, res->beacon_interval)) 5874 goto nla_put_failure; 5875 if (nla_put_u16(msg, NL80211_BSS_CAPABILITY, res->capability) || 5876 nla_put_u32(msg, NL80211_BSS_FREQUENCY, res->channel->center_freq) || 5877 nla_put_u32(msg, NL80211_BSS_CHAN_WIDTH, res->scan_width) || 5878 nla_put_u32(msg, NL80211_BSS_SEEN_MS_AGO, 5879 jiffies_to_msecs(jiffies - intbss->ts))) 5880 goto nla_put_failure; 5881 5882 switch (rdev->wiphy.signal_type) { 5883 case CFG80211_SIGNAL_TYPE_MBM: 5884 if (nla_put_u32(msg, NL80211_BSS_SIGNAL_MBM, res->signal)) 5885 goto nla_put_failure; 5886 break; 5887 case CFG80211_SIGNAL_TYPE_UNSPEC: 5888 if (nla_put_u8(msg, NL80211_BSS_SIGNAL_UNSPEC, res->signal)) 5889 goto nla_put_failure; 5890 break; 5891 default: 5892 break; 5893 } 5894 5895 switch (wdev->iftype) { 5896 case NL80211_IFTYPE_P2P_CLIENT: 5897 case NL80211_IFTYPE_STATION: 5898 if (intbss == wdev->current_bss && 5899 nla_put_u32(msg, NL80211_BSS_STATUS, 5900 NL80211_BSS_STATUS_ASSOCIATED)) 5901 goto nla_put_failure; 5902 break; 5903 case NL80211_IFTYPE_ADHOC: 5904 if (intbss == wdev->current_bss && 5905 nla_put_u32(msg, NL80211_BSS_STATUS, 5906 NL80211_BSS_STATUS_IBSS_JOINED)) 5907 goto nla_put_failure; 5908 break; 5909 default: 5910 break; 5911 } 5912 5913 nla_nest_end(msg, bss); 5914 5915 return genlmsg_end(msg, hdr); 5916 5917 fail_unlock_rcu: 5918 rcu_read_unlock(); 5919 nla_put_failure: 5920 genlmsg_cancel(msg, hdr); 5921 return -EMSGSIZE; 5922 } 5923 5924 static int nl80211_dump_scan(struct sk_buff *skb, struct netlink_callback *cb) 5925 { 5926 struct cfg80211_registered_device *rdev; 5927 struct cfg80211_internal_bss *scan; 5928 struct wireless_dev *wdev; 5929 int start = cb->args[2], idx = 0; 5930 int err; 5931 5932 err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev); 5933 if (err) 5934 return err; 5935 5936 wdev_lock(wdev); 5937 spin_lock_bh(&rdev->bss_lock); 5938 cfg80211_bss_expire(rdev); 5939 5940 cb->seq = rdev->bss_generation; 5941 5942 list_for_each_entry(scan, &rdev->bss_list, list) { 5943 if (++idx <= start) 5944 continue; 5945 if (nl80211_send_bss(skb, cb, 5946 cb->nlh->nlmsg_seq, NLM_F_MULTI, 5947 rdev, wdev, scan) < 0) { 5948 idx--; 5949 break; 5950 } 5951 } 5952 5953 spin_unlock_bh(&rdev->bss_lock); 5954 wdev_unlock(wdev); 5955 5956 cb->args[2] = idx; 5957 nl80211_finish_wdev_dump(rdev); 5958 5959 return skb->len; 5960 } 5961 5962 static int nl80211_send_survey(struct sk_buff *msg, u32 portid, u32 seq, 5963 int flags, struct net_device *dev, 5964 struct survey_info *survey) 5965 { 5966 void *hdr; 5967 struct nlattr *infoattr; 5968 5969 hdr = nl80211hdr_put(msg, portid, seq, flags, 5970 NL80211_CMD_NEW_SURVEY_RESULTS); 5971 if (!hdr) 5972 return -ENOMEM; 5973 5974 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex)) 5975 goto nla_put_failure; 5976 5977 infoattr = nla_nest_start(msg, NL80211_ATTR_SURVEY_INFO); 5978 if (!infoattr) 5979 goto nla_put_failure; 5980 5981 if (nla_put_u32(msg, NL80211_SURVEY_INFO_FREQUENCY, 5982 survey->channel->center_freq)) 5983 goto nla_put_failure; 5984 5985 if ((survey->filled & SURVEY_INFO_NOISE_DBM) && 5986 nla_put_u8(msg, NL80211_SURVEY_INFO_NOISE, survey->noise)) 5987 goto nla_put_failure; 5988 if ((survey->filled & SURVEY_INFO_IN_USE) && 5989 nla_put_flag(msg, NL80211_SURVEY_INFO_IN_USE)) 5990 goto nla_put_failure; 5991 if ((survey->filled & SURVEY_INFO_CHANNEL_TIME) && 5992 nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME, 5993 survey->channel_time)) 5994 goto nla_put_failure; 5995 if ((survey->filled & SURVEY_INFO_CHANNEL_TIME_BUSY) && 5996 nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_BUSY, 5997 survey->channel_time_busy)) 5998 goto nla_put_failure; 5999 if ((survey->filled & SURVEY_INFO_CHANNEL_TIME_EXT_BUSY) && 6000 nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_EXT_BUSY, 6001 survey->channel_time_ext_busy)) 6002 goto nla_put_failure; 6003 if ((survey->filled & SURVEY_INFO_CHANNEL_TIME_RX) && 6004 nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_RX, 6005 survey->channel_time_rx)) 6006 goto nla_put_failure; 6007 if ((survey->filled & SURVEY_INFO_CHANNEL_TIME_TX) && 6008 nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_TX, 6009 survey->channel_time_tx)) 6010 goto nla_put_failure; 6011 6012 nla_nest_end(msg, infoattr); 6013 6014 return genlmsg_end(msg, hdr); 6015 6016 nla_put_failure: 6017 genlmsg_cancel(msg, hdr); 6018 return -EMSGSIZE; 6019 } 6020 6021 static int nl80211_dump_survey(struct sk_buff *skb, 6022 struct netlink_callback *cb) 6023 { 6024 struct survey_info survey; 6025 struct cfg80211_registered_device *dev; 6026 struct wireless_dev *wdev; 6027 int survey_idx = cb->args[2]; 6028 int res; 6029 6030 res = nl80211_prepare_wdev_dump(skb, cb, &dev, &wdev); 6031 if (res) 6032 return res; 6033 6034 if (!wdev->netdev) { 6035 res = -EINVAL; 6036 goto out_err; 6037 } 6038 6039 if (!dev->ops->dump_survey) { 6040 res = -EOPNOTSUPP; 6041 goto out_err; 6042 } 6043 6044 while (1) { 6045 struct ieee80211_channel *chan; 6046 6047 res = rdev_dump_survey(dev, wdev->netdev, survey_idx, &survey); 6048 if (res == -ENOENT) 6049 break; 6050 if (res) 6051 goto out_err; 6052 6053 /* Survey without a channel doesn't make sense */ 6054 if (!survey.channel) { 6055 res = -EINVAL; 6056 goto out; 6057 } 6058 6059 chan = ieee80211_get_channel(&dev->wiphy, 6060 survey.channel->center_freq); 6061 if (!chan || chan->flags & IEEE80211_CHAN_DISABLED) { 6062 survey_idx++; 6063 continue; 6064 } 6065 6066 if (nl80211_send_survey(skb, 6067 NETLINK_CB(cb->skb).portid, 6068 cb->nlh->nlmsg_seq, NLM_F_MULTI, 6069 wdev->netdev, &survey) < 0) 6070 goto out; 6071 survey_idx++; 6072 } 6073 6074 out: 6075 cb->args[2] = survey_idx; 6076 res = skb->len; 6077 out_err: 6078 nl80211_finish_wdev_dump(dev); 6079 return res; 6080 } 6081 6082 static bool nl80211_valid_wpa_versions(u32 wpa_versions) 6083 { 6084 return !(wpa_versions & ~(NL80211_WPA_VERSION_1 | 6085 NL80211_WPA_VERSION_2)); 6086 } 6087 6088 static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info) 6089 { 6090 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 6091 struct net_device *dev = info->user_ptr[1]; 6092 struct ieee80211_channel *chan; 6093 const u8 *bssid, *ssid, *ie = NULL, *sae_data = NULL; 6094 int err, ssid_len, ie_len = 0, sae_data_len = 0; 6095 enum nl80211_auth_type auth_type; 6096 struct key_parse key; 6097 bool local_state_change; 6098 6099 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE])) 6100 return -EINVAL; 6101 6102 if (!info->attrs[NL80211_ATTR_MAC]) 6103 return -EINVAL; 6104 6105 if (!info->attrs[NL80211_ATTR_AUTH_TYPE]) 6106 return -EINVAL; 6107 6108 if (!info->attrs[NL80211_ATTR_SSID]) 6109 return -EINVAL; 6110 6111 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ]) 6112 return -EINVAL; 6113 6114 err = nl80211_parse_key(info, &key); 6115 if (err) 6116 return err; 6117 6118 if (key.idx >= 0) { 6119 if (key.type != -1 && key.type != NL80211_KEYTYPE_GROUP) 6120 return -EINVAL; 6121 if (!key.p.key || !key.p.key_len) 6122 return -EINVAL; 6123 if ((key.p.cipher != WLAN_CIPHER_SUITE_WEP40 || 6124 key.p.key_len != WLAN_KEY_LEN_WEP40) && 6125 (key.p.cipher != WLAN_CIPHER_SUITE_WEP104 || 6126 key.p.key_len != WLAN_KEY_LEN_WEP104)) 6127 return -EINVAL; 6128 if (key.idx > 4) 6129 return -EINVAL; 6130 } else { 6131 key.p.key_len = 0; 6132 key.p.key = NULL; 6133 } 6134 6135 if (key.idx >= 0) { 6136 int i; 6137 bool ok = false; 6138 for (i = 0; i < rdev->wiphy.n_cipher_suites; i++) { 6139 if (key.p.cipher == rdev->wiphy.cipher_suites[i]) { 6140 ok = true; 6141 break; 6142 } 6143 } 6144 if (!ok) 6145 return -EINVAL; 6146 } 6147 6148 if (!rdev->ops->auth) 6149 return -EOPNOTSUPP; 6150 6151 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION && 6152 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) 6153 return -EOPNOTSUPP; 6154 6155 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]); 6156 chan = ieee80211_get_channel(&rdev->wiphy, 6157 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ])); 6158 if (!chan || (chan->flags & IEEE80211_CHAN_DISABLED)) 6159 return -EINVAL; 6160 6161 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]); 6162 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]); 6163 6164 if (info->attrs[NL80211_ATTR_IE]) { 6165 ie = nla_data(info->attrs[NL80211_ATTR_IE]); 6166 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); 6167 } 6168 6169 auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]); 6170 if (!nl80211_valid_auth_type(rdev, auth_type, NL80211_CMD_AUTHENTICATE)) 6171 return -EINVAL; 6172 6173 if (auth_type == NL80211_AUTHTYPE_SAE && 6174 !info->attrs[NL80211_ATTR_SAE_DATA]) 6175 return -EINVAL; 6176 6177 if (info->attrs[NL80211_ATTR_SAE_DATA]) { 6178 if (auth_type != NL80211_AUTHTYPE_SAE) 6179 return -EINVAL; 6180 sae_data = nla_data(info->attrs[NL80211_ATTR_SAE_DATA]); 6181 sae_data_len = nla_len(info->attrs[NL80211_ATTR_SAE_DATA]); 6182 /* need to include at least Auth Transaction and Status Code */ 6183 if (sae_data_len < 4) 6184 return -EINVAL; 6185 } 6186 6187 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE]; 6188 6189 /* 6190 * Since we no longer track auth state, ignore 6191 * requests to only change local state. 6192 */ 6193 if (local_state_change) 6194 return 0; 6195 6196 wdev_lock(dev->ieee80211_ptr); 6197 err = cfg80211_mlme_auth(rdev, dev, chan, auth_type, bssid, 6198 ssid, ssid_len, ie, ie_len, 6199 key.p.key, key.p.key_len, key.idx, 6200 sae_data, sae_data_len); 6201 wdev_unlock(dev->ieee80211_ptr); 6202 return err; 6203 } 6204 6205 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev, 6206 struct genl_info *info, 6207 struct cfg80211_crypto_settings *settings, 6208 int cipher_limit) 6209 { 6210 memset(settings, 0, sizeof(*settings)); 6211 6212 settings->control_port = info->attrs[NL80211_ATTR_CONTROL_PORT]; 6213 6214 if (info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) { 6215 u16 proto; 6216 proto = nla_get_u16( 6217 info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]); 6218 settings->control_port_ethertype = cpu_to_be16(proto); 6219 if (!(rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) && 6220 proto != ETH_P_PAE) 6221 return -EINVAL; 6222 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT]) 6223 settings->control_port_no_encrypt = true; 6224 } else 6225 settings->control_port_ethertype = cpu_to_be16(ETH_P_PAE); 6226 6227 if (info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]) { 6228 void *data; 6229 int len, i; 6230 6231 data = nla_data(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]); 6232 len = nla_len(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]); 6233 settings->n_ciphers_pairwise = len / sizeof(u32); 6234 6235 if (len % sizeof(u32)) 6236 return -EINVAL; 6237 6238 if (settings->n_ciphers_pairwise > cipher_limit) 6239 return -EINVAL; 6240 6241 memcpy(settings->ciphers_pairwise, data, len); 6242 6243 for (i = 0; i < settings->n_ciphers_pairwise; i++) 6244 if (!cfg80211_supported_cipher_suite( 6245 &rdev->wiphy, 6246 settings->ciphers_pairwise[i])) 6247 return -EINVAL; 6248 } 6249 6250 if (info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]) { 6251 settings->cipher_group = 6252 nla_get_u32(info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]); 6253 if (!cfg80211_supported_cipher_suite(&rdev->wiphy, 6254 settings->cipher_group)) 6255 return -EINVAL; 6256 } 6257 6258 if (info->attrs[NL80211_ATTR_WPA_VERSIONS]) { 6259 settings->wpa_versions = 6260 nla_get_u32(info->attrs[NL80211_ATTR_WPA_VERSIONS]); 6261 if (!nl80211_valid_wpa_versions(settings->wpa_versions)) 6262 return -EINVAL; 6263 } 6264 6265 if (info->attrs[NL80211_ATTR_AKM_SUITES]) { 6266 void *data; 6267 int len; 6268 6269 data = nla_data(info->attrs[NL80211_ATTR_AKM_SUITES]); 6270 len = nla_len(info->attrs[NL80211_ATTR_AKM_SUITES]); 6271 settings->n_akm_suites = len / sizeof(u32); 6272 6273 if (len % sizeof(u32)) 6274 return -EINVAL; 6275 6276 if (settings->n_akm_suites > NL80211_MAX_NR_AKM_SUITES) 6277 return -EINVAL; 6278 6279 memcpy(settings->akm_suites, data, len); 6280 } 6281 6282 return 0; 6283 } 6284 6285 static int nl80211_associate(struct sk_buff *skb, struct genl_info *info) 6286 { 6287 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 6288 struct net_device *dev = info->user_ptr[1]; 6289 struct ieee80211_channel *chan; 6290 struct cfg80211_assoc_request req = {}; 6291 const u8 *bssid, *ssid; 6292 int err, ssid_len = 0; 6293 6294 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE])) 6295 return -EINVAL; 6296 6297 if (!info->attrs[NL80211_ATTR_MAC] || 6298 !info->attrs[NL80211_ATTR_SSID] || 6299 !info->attrs[NL80211_ATTR_WIPHY_FREQ]) 6300 return -EINVAL; 6301 6302 if (!rdev->ops->assoc) 6303 return -EOPNOTSUPP; 6304 6305 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION && 6306 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) 6307 return -EOPNOTSUPP; 6308 6309 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]); 6310 6311 chan = ieee80211_get_channel(&rdev->wiphy, 6312 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ])); 6313 if (!chan || (chan->flags & IEEE80211_CHAN_DISABLED)) 6314 return -EINVAL; 6315 6316 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]); 6317 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]); 6318 6319 if (info->attrs[NL80211_ATTR_IE]) { 6320 req.ie = nla_data(info->attrs[NL80211_ATTR_IE]); 6321 req.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); 6322 } 6323 6324 if (info->attrs[NL80211_ATTR_USE_MFP]) { 6325 enum nl80211_mfp mfp = 6326 nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]); 6327 if (mfp == NL80211_MFP_REQUIRED) 6328 req.use_mfp = true; 6329 else if (mfp != NL80211_MFP_NO) 6330 return -EINVAL; 6331 } 6332 6333 if (info->attrs[NL80211_ATTR_PREV_BSSID]) 6334 req.prev_bssid = nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]); 6335 6336 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT])) 6337 req.flags |= ASSOC_REQ_DISABLE_HT; 6338 6339 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) 6340 memcpy(&req.ht_capa_mask, 6341 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]), 6342 sizeof(req.ht_capa_mask)); 6343 6344 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) { 6345 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) 6346 return -EINVAL; 6347 memcpy(&req.ht_capa, 6348 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]), 6349 sizeof(req.ht_capa)); 6350 } 6351 6352 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT])) 6353 req.flags |= ASSOC_REQ_DISABLE_VHT; 6354 6355 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]) 6356 memcpy(&req.vht_capa_mask, 6357 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]), 6358 sizeof(req.vht_capa_mask)); 6359 6360 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) { 6361 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]) 6362 return -EINVAL; 6363 memcpy(&req.vht_capa, 6364 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]), 6365 sizeof(req.vht_capa)); 6366 } 6367 6368 err = nl80211_crypto_settings(rdev, info, &req.crypto, 1); 6369 if (!err) { 6370 wdev_lock(dev->ieee80211_ptr); 6371 err = cfg80211_mlme_assoc(rdev, dev, chan, bssid, 6372 ssid, ssid_len, &req); 6373 wdev_unlock(dev->ieee80211_ptr); 6374 } 6375 6376 return err; 6377 } 6378 6379 static int nl80211_deauthenticate(struct sk_buff *skb, struct genl_info *info) 6380 { 6381 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 6382 struct net_device *dev = info->user_ptr[1]; 6383 const u8 *ie = NULL, *bssid; 6384 int ie_len = 0, err; 6385 u16 reason_code; 6386 bool local_state_change; 6387 6388 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE])) 6389 return -EINVAL; 6390 6391 if (!info->attrs[NL80211_ATTR_MAC]) 6392 return -EINVAL; 6393 6394 if (!info->attrs[NL80211_ATTR_REASON_CODE]) 6395 return -EINVAL; 6396 6397 if (!rdev->ops->deauth) 6398 return -EOPNOTSUPP; 6399 6400 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION && 6401 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) 6402 return -EOPNOTSUPP; 6403 6404 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]); 6405 6406 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]); 6407 if (reason_code == 0) { 6408 /* Reason Code 0 is reserved */ 6409 return -EINVAL; 6410 } 6411 6412 if (info->attrs[NL80211_ATTR_IE]) { 6413 ie = nla_data(info->attrs[NL80211_ATTR_IE]); 6414 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); 6415 } 6416 6417 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE]; 6418 6419 wdev_lock(dev->ieee80211_ptr); 6420 err = cfg80211_mlme_deauth(rdev, dev, bssid, ie, ie_len, reason_code, 6421 local_state_change); 6422 wdev_unlock(dev->ieee80211_ptr); 6423 return err; 6424 } 6425 6426 static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info) 6427 { 6428 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 6429 struct net_device *dev = info->user_ptr[1]; 6430 const u8 *ie = NULL, *bssid; 6431 int ie_len = 0, err; 6432 u16 reason_code; 6433 bool local_state_change; 6434 6435 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE])) 6436 return -EINVAL; 6437 6438 if (!info->attrs[NL80211_ATTR_MAC]) 6439 return -EINVAL; 6440 6441 if (!info->attrs[NL80211_ATTR_REASON_CODE]) 6442 return -EINVAL; 6443 6444 if (!rdev->ops->disassoc) 6445 return -EOPNOTSUPP; 6446 6447 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION && 6448 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) 6449 return -EOPNOTSUPP; 6450 6451 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]); 6452 6453 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]); 6454 if (reason_code == 0) { 6455 /* Reason Code 0 is reserved */ 6456 return -EINVAL; 6457 } 6458 6459 if (info->attrs[NL80211_ATTR_IE]) { 6460 ie = nla_data(info->attrs[NL80211_ATTR_IE]); 6461 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); 6462 } 6463 6464 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE]; 6465 6466 wdev_lock(dev->ieee80211_ptr); 6467 err = cfg80211_mlme_disassoc(rdev, dev, bssid, ie, ie_len, reason_code, 6468 local_state_change); 6469 wdev_unlock(dev->ieee80211_ptr); 6470 return err; 6471 } 6472 6473 static bool 6474 nl80211_parse_mcast_rate(struct cfg80211_registered_device *rdev, 6475 int mcast_rate[IEEE80211_NUM_BANDS], 6476 int rateval) 6477 { 6478 struct wiphy *wiphy = &rdev->wiphy; 6479 bool found = false; 6480 int band, i; 6481 6482 for (band = 0; band < IEEE80211_NUM_BANDS; band++) { 6483 struct ieee80211_supported_band *sband; 6484 6485 sband = wiphy->bands[band]; 6486 if (!sband) 6487 continue; 6488 6489 for (i = 0; i < sband->n_bitrates; i++) { 6490 if (sband->bitrates[i].bitrate == rateval) { 6491 mcast_rate[band] = i + 1; 6492 found = true; 6493 break; 6494 } 6495 } 6496 } 6497 6498 return found; 6499 } 6500 6501 static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info) 6502 { 6503 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 6504 struct net_device *dev = info->user_ptr[1]; 6505 struct cfg80211_ibss_params ibss; 6506 struct wiphy *wiphy; 6507 struct cfg80211_cached_keys *connkeys = NULL; 6508 int err; 6509 6510 memset(&ibss, 0, sizeof(ibss)); 6511 6512 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE])) 6513 return -EINVAL; 6514 6515 if (!info->attrs[NL80211_ATTR_SSID] || 6516 !nla_len(info->attrs[NL80211_ATTR_SSID])) 6517 return -EINVAL; 6518 6519 ibss.beacon_interval = 100; 6520 6521 if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) { 6522 ibss.beacon_interval = 6523 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]); 6524 if (ibss.beacon_interval < 1 || ibss.beacon_interval > 10000) 6525 return -EINVAL; 6526 } 6527 6528 if (!rdev->ops->join_ibss) 6529 return -EOPNOTSUPP; 6530 6531 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC) 6532 return -EOPNOTSUPP; 6533 6534 wiphy = &rdev->wiphy; 6535 6536 if (info->attrs[NL80211_ATTR_MAC]) { 6537 ibss.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]); 6538 6539 if (!is_valid_ether_addr(ibss.bssid)) 6540 return -EINVAL; 6541 } 6542 ibss.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]); 6543 ibss.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]); 6544 6545 if (info->attrs[NL80211_ATTR_IE]) { 6546 ibss.ie = nla_data(info->attrs[NL80211_ATTR_IE]); 6547 ibss.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); 6548 } 6549 6550 err = nl80211_parse_chandef(rdev, info, &ibss.chandef); 6551 if (err) 6552 return err; 6553 6554 if (!cfg80211_reg_can_beacon(&rdev->wiphy, &ibss.chandef)) 6555 return -EINVAL; 6556 6557 switch (ibss.chandef.width) { 6558 case NL80211_CHAN_WIDTH_5: 6559 case NL80211_CHAN_WIDTH_10: 6560 case NL80211_CHAN_WIDTH_20_NOHT: 6561 break; 6562 case NL80211_CHAN_WIDTH_20: 6563 case NL80211_CHAN_WIDTH_40: 6564 if (rdev->wiphy.features & NL80211_FEATURE_HT_IBSS) 6565 break; 6566 default: 6567 return -EINVAL; 6568 } 6569 6570 ibss.channel_fixed = !!info->attrs[NL80211_ATTR_FREQ_FIXED]; 6571 ibss.privacy = !!info->attrs[NL80211_ATTR_PRIVACY]; 6572 6573 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) { 6574 u8 *rates = 6575 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]); 6576 int n_rates = 6577 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]); 6578 struct ieee80211_supported_band *sband = 6579 wiphy->bands[ibss.chandef.chan->band]; 6580 6581 err = ieee80211_get_ratemask(sband, rates, n_rates, 6582 &ibss.basic_rates); 6583 if (err) 6584 return err; 6585 } 6586 6587 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) 6588 memcpy(&ibss.ht_capa_mask, 6589 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]), 6590 sizeof(ibss.ht_capa_mask)); 6591 6592 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) { 6593 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) 6594 return -EINVAL; 6595 memcpy(&ibss.ht_capa, 6596 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]), 6597 sizeof(ibss.ht_capa)); 6598 } 6599 6600 if (info->attrs[NL80211_ATTR_MCAST_RATE] && 6601 !nl80211_parse_mcast_rate(rdev, ibss.mcast_rate, 6602 nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE]))) 6603 return -EINVAL; 6604 6605 if (ibss.privacy && info->attrs[NL80211_ATTR_KEYS]) { 6606 bool no_ht = false; 6607 6608 connkeys = nl80211_parse_connkeys(rdev, 6609 info->attrs[NL80211_ATTR_KEYS], 6610 &no_ht); 6611 if (IS_ERR(connkeys)) 6612 return PTR_ERR(connkeys); 6613 6614 if ((ibss.chandef.width != NL80211_CHAN_WIDTH_20_NOHT) && 6615 no_ht) { 6616 kfree(connkeys); 6617 return -EINVAL; 6618 } 6619 } 6620 6621 ibss.control_port = 6622 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT]); 6623 6624 ibss.userspace_handles_dfs = 6625 nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS]); 6626 6627 err = cfg80211_join_ibss(rdev, dev, &ibss, connkeys); 6628 if (err) 6629 kfree(connkeys); 6630 return err; 6631 } 6632 6633 static int nl80211_leave_ibss(struct sk_buff *skb, struct genl_info *info) 6634 { 6635 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 6636 struct net_device *dev = info->user_ptr[1]; 6637 6638 if (!rdev->ops->leave_ibss) 6639 return -EOPNOTSUPP; 6640 6641 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC) 6642 return -EOPNOTSUPP; 6643 6644 return cfg80211_leave_ibss(rdev, dev, false); 6645 } 6646 6647 static int nl80211_set_mcast_rate(struct sk_buff *skb, struct genl_info *info) 6648 { 6649 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 6650 struct net_device *dev = info->user_ptr[1]; 6651 int mcast_rate[IEEE80211_NUM_BANDS]; 6652 u32 nla_rate; 6653 int err; 6654 6655 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC && 6656 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT) 6657 return -EOPNOTSUPP; 6658 6659 if (!rdev->ops->set_mcast_rate) 6660 return -EOPNOTSUPP; 6661 6662 memset(mcast_rate, 0, sizeof(mcast_rate)); 6663 6664 if (!info->attrs[NL80211_ATTR_MCAST_RATE]) 6665 return -EINVAL; 6666 6667 nla_rate = nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE]); 6668 if (!nl80211_parse_mcast_rate(rdev, mcast_rate, nla_rate)) 6669 return -EINVAL; 6670 6671 err = rdev->ops->set_mcast_rate(&rdev->wiphy, dev, mcast_rate); 6672 6673 return err; 6674 } 6675 6676 6677 #ifdef CONFIG_NL80211_TESTMODE 6678 static int nl80211_testmode_do(struct sk_buff *skb, struct genl_info *info) 6679 { 6680 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 6681 struct wireless_dev *wdev = 6682 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs); 6683 int err; 6684 6685 if (!rdev->ops->testmode_cmd) 6686 return -EOPNOTSUPP; 6687 6688 if (IS_ERR(wdev)) { 6689 err = PTR_ERR(wdev); 6690 if (err != -EINVAL) 6691 return err; 6692 wdev = NULL; 6693 } else if (wdev->wiphy != &rdev->wiphy) { 6694 return -EINVAL; 6695 } 6696 6697 if (!info->attrs[NL80211_ATTR_TESTDATA]) 6698 return -EINVAL; 6699 6700 rdev->testmode_info = info; 6701 err = rdev_testmode_cmd(rdev, wdev, 6702 nla_data(info->attrs[NL80211_ATTR_TESTDATA]), 6703 nla_len(info->attrs[NL80211_ATTR_TESTDATA])); 6704 rdev->testmode_info = NULL; 6705 6706 return err; 6707 } 6708 6709 static int nl80211_testmode_dump(struct sk_buff *skb, 6710 struct netlink_callback *cb) 6711 { 6712 struct cfg80211_registered_device *rdev; 6713 int err; 6714 long phy_idx; 6715 void *data = NULL; 6716 int data_len = 0; 6717 6718 rtnl_lock(); 6719 6720 if (cb->args[0]) { 6721 /* 6722 * 0 is a valid index, but not valid for args[0], 6723 * so we need to offset by 1. 6724 */ 6725 phy_idx = cb->args[0] - 1; 6726 } else { 6727 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize, 6728 nl80211_fam.attrbuf, nl80211_fam.maxattr, 6729 nl80211_policy); 6730 if (err) 6731 goto out_err; 6732 6733 rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk), 6734 nl80211_fam.attrbuf); 6735 if (IS_ERR(rdev)) { 6736 err = PTR_ERR(rdev); 6737 goto out_err; 6738 } 6739 phy_idx = rdev->wiphy_idx; 6740 rdev = NULL; 6741 6742 if (nl80211_fam.attrbuf[NL80211_ATTR_TESTDATA]) 6743 cb->args[1] = 6744 (long)nl80211_fam.attrbuf[NL80211_ATTR_TESTDATA]; 6745 } 6746 6747 if (cb->args[1]) { 6748 data = nla_data((void *)cb->args[1]); 6749 data_len = nla_len((void *)cb->args[1]); 6750 } 6751 6752 rdev = cfg80211_rdev_by_wiphy_idx(phy_idx); 6753 if (!rdev) { 6754 err = -ENOENT; 6755 goto out_err; 6756 } 6757 6758 if (!rdev->ops->testmode_dump) { 6759 err = -EOPNOTSUPP; 6760 goto out_err; 6761 } 6762 6763 while (1) { 6764 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid, 6765 cb->nlh->nlmsg_seq, NLM_F_MULTI, 6766 NL80211_CMD_TESTMODE); 6767 struct nlattr *tmdata; 6768 6769 if (!hdr) 6770 break; 6771 6772 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, phy_idx)) { 6773 genlmsg_cancel(skb, hdr); 6774 break; 6775 } 6776 6777 tmdata = nla_nest_start(skb, NL80211_ATTR_TESTDATA); 6778 if (!tmdata) { 6779 genlmsg_cancel(skb, hdr); 6780 break; 6781 } 6782 err = rdev_testmode_dump(rdev, skb, cb, data, data_len); 6783 nla_nest_end(skb, tmdata); 6784 6785 if (err == -ENOBUFS || err == -ENOENT) { 6786 genlmsg_cancel(skb, hdr); 6787 break; 6788 } else if (err) { 6789 genlmsg_cancel(skb, hdr); 6790 goto out_err; 6791 } 6792 6793 genlmsg_end(skb, hdr); 6794 } 6795 6796 err = skb->len; 6797 /* see above */ 6798 cb->args[0] = phy_idx + 1; 6799 out_err: 6800 rtnl_unlock(); 6801 return err; 6802 } 6803 6804 static struct sk_buff * 6805 __cfg80211_testmode_alloc_skb(struct cfg80211_registered_device *rdev, 6806 int approxlen, u32 portid, u32 seq, gfp_t gfp) 6807 { 6808 struct sk_buff *skb; 6809 void *hdr; 6810 struct nlattr *data; 6811 6812 skb = nlmsg_new(approxlen + 100, gfp); 6813 if (!skb) 6814 return NULL; 6815 6816 hdr = nl80211hdr_put(skb, portid, seq, 0, NL80211_CMD_TESTMODE); 6817 if (!hdr) { 6818 kfree_skb(skb); 6819 return NULL; 6820 } 6821 6822 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx)) 6823 goto nla_put_failure; 6824 data = nla_nest_start(skb, NL80211_ATTR_TESTDATA); 6825 6826 ((void **)skb->cb)[0] = rdev; 6827 ((void **)skb->cb)[1] = hdr; 6828 ((void **)skb->cb)[2] = data; 6829 6830 return skb; 6831 6832 nla_put_failure: 6833 kfree_skb(skb); 6834 return NULL; 6835 } 6836 6837 struct sk_buff *cfg80211_testmode_alloc_reply_skb(struct wiphy *wiphy, 6838 int approxlen) 6839 { 6840 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); 6841 6842 if (WARN_ON(!rdev->testmode_info)) 6843 return NULL; 6844 6845 return __cfg80211_testmode_alloc_skb(rdev, approxlen, 6846 rdev->testmode_info->snd_portid, 6847 rdev->testmode_info->snd_seq, 6848 GFP_KERNEL); 6849 } 6850 EXPORT_SYMBOL(cfg80211_testmode_alloc_reply_skb); 6851 6852 int cfg80211_testmode_reply(struct sk_buff *skb) 6853 { 6854 struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0]; 6855 void *hdr = ((void **)skb->cb)[1]; 6856 struct nlattr *data = ((void **)skb->cb)[2]; 6857 6858 if (WARN_ON(!rdev->testmode_info)) { 6859 kfree_skb(skb); 6860 return -EINVAL; 6861 } 6862 6863 nla_nest_end(skb, data); 6864 genlmsg_end(skb, hdr); 6865 return genlmsg_reply(skb, rdev->testmode_info); 6866 } 6867 EXPORT_SYMBOL(cfg80211_testmode_reply); 6868 6869 struct sk_buff *cfg80211_testmode_alloc_event_skb(struct wiphy *wiphy, 6870 int approxlen, gfp_t gfp) 6871 { 6872 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); 6873 6874 return __cfg80211_testmode_alloc_skb(rdev, approxlen, 0, 0, gfp); 6875 } 6876 EXPORT_SYMBOL(cfg80211_testmode_alloc_event_skb); 6877 6878 void cfg80211_testmode_event(struct sk_buff *skb, gfp_t gfp) 6879 { 6880 struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0]; 6881 void *hdr = ((void **)skb->cb)[1]; 6882 struct nlattr *data = ((void **)skb->cb)[2]; 6883 6884 nla_nest_end(skb, data); 6885 genlmsg_end(skb, hdr); 6886 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), skb, 0, 6887 NL80211_MCGRP_TESTMODE, gfp); 6888 } 6889 EXPORT_SYMBOL(cfg80211_testmode_event); 6890 #endif 6891 6892 static int nl80211_connect(struct sk_buff *skb, struct genl_info *info) 6893 { 6894 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 6895 struct net_device *dev = info->user_ptr[1]; 6896 struct cfg80211_connect_params connect; 6897 struct wiphy *wiphy; 6898 struct cfg80211_cached_keys *connkeys = NULL; 6899 int err; 6900 6901 memset(&connect, 0, sizeof(connect)); 6902 6903 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE])) 6904 return -EINVAL; 6905 6906 if (!info->attrs[NL80211_ATTR_SSID] || 6907 !nla_len(info->attrs[NL80211_ATTR_SSID])) 6908 return -EINVAL; 6909 6910 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) { 6911 connect.auth_type = 6912 nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]); 6913 if (!nl80211_valid_auth_type(rdev, connect.auth_type, 6914 NL80211_CMD_CONNECT)) 6915 return -EINVAL; 6916 } else 6917 connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC; 6918 6919 connect.privacy = info->attrs[NL80211_ATTR_PRIVACY]; 6920 6921 err = nl80211_crypto_settings(rdev, info, &connect.crypto, 6922 NL80211_MAX_NR_CIPHER_SUITES); 6923 if (err) 6924 return err; 6925 6926 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION && 6927 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) 6928 return -EOPNOTSUPP; 6929 6930 wiphy = &rdev->wiphy; 6931 6932 connect.bg_scan_period = -1; 6933 if (info->attrs[NL80211_ATTR_BG_SCAN_PERIOD] && 6934 (wiphy->flags & WIPHY_FLAG_SUPPORTS_FW_ROAM)) { 6935 connect.bg_scan_period = 6936 nla_get_u16(info->attrs[NL80211_ATTR_BG_SCAN_PERIOD]); 6937 } 6938 6939 if (info->attrs[NL80211_ATTR_MAC]) 6940 connect.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]); 6941 connect.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]); 6942 connect.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]); 6943 6944 if (info->attrs[NL80211_ATTR_IE]) { 6945 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]); 6946 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); 6947 } 6948 6949 if (info->attrs[NL80211_ATTR_USE_MFP]) { 6950 connect.mfp = nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]); 6951 if (connect.mfp != NL80211_MFP_REQUIRED && 6952 connect.mfp != NL80211_MFP_NO) 6953 return -EINVAL; 6954 } else { 6955 connect.mfp = NL80211_MFP_NO; 6956 } 6957 6958 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) { 6959 connect.channel = 6960 ieee80211_get_channel(wiphy, 6961 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ])); 6962 if (!connect.channel || 6963 connect.channel->flags & IEEE80211_CHAN_DISABLED) 6964 return -EINVAL; 6965 } 6966 6967 if (connect.privacy && info->attrs[NL80211_ATTR_KEYS]) { 6968 connkeys = nl80211_parse_connkeys(rdev, 6969 info->attrs[NL80211_ATTR_KEYS], NULL); 6970 if (IS_ERR(connkeys)) 6971 return PTR_ERR(connkeys); 6972 } 6973 6974 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT])) 6975 connect.flags |= ASSOC_REQ_DISABLE_HT; 6976 6977 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) 6978 memcpy(&connect.ht_capa_mask, 6979 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]), 6980 sizeof(connect.ht_capa_mask)); 6981 6982 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) { 6983 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) { 6984 kfree(connkeys); 6985 return -EINVAL; 6986 } 6987 memcpy(&connect.ht_capa, 6988 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]), 6989 sizeof(connect.ht_capa)); 6990 } 6991 6992 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT])) 6993 connect.flags |= ASSOC_REQ_DISABLE_VHT; 6994 6995 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]) 6996 memcpy(&connect.vht_capa_mask, 6997 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]), 6998 sizeof(connect.vht_capa_mask)); 6999 7000 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) { 7001 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]) { 7002 kfree(connkeys); 7003 return -EINVAL; 7004 } 7005 memcpy(&connect.vht_capa, 7006 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]), 7007 sizeof(connect.vht_capa)); 7008 } 7009 7010 wdev_lock(dev->ieee80211_ptr); 7011 err = cfg80211_connect(rdev, dev, &connect, connkeys, NULL); 7012 wdev_unlock(dev->ieee80211_ptr); 7013 if (err) 7014 kfree(connkeys); 7015 return err; 7016 } 7017 7018 static int nl80211_disconnect(struct sk_buff *skb, struct genl_info *info) 7019 { 7020 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 7021 struct net_device *dev = info->user_ptr[1]; 7022 u16 reason; 7023 int ret; 7024 7025 if (!info->attrs[NL80211_ATTR_REASON_CODE]) 7026 reason = WLAN_REASON_DEAUTH_LEAVING; 7027 else 7028 reason = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]); 7029 7030 if (reason == 0) 7031 return -EINVAL; 7032 7033 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION && 7034 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) 7035 return -EOPNOTSUPP; 7036 7037 wdev_lock(dev->ieee80211_ptr); 7038 ret = cfg80211_disconnect(rdev, dev, reason, true); 7039 wdev_unlock(dev->ieee80211_ptr); 7040 return ret; 7041 } 7042 7043 static int nl80211_wiphy_netns(struct sk_buff *skb, struct genl_info *info) 7044 { 7045 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 7046 struct net *net; 7047 int err; 7048 u32 pid; 7049 7050 if (!info->attrs[NL80211_ATTR_PID]) 7051 return -EINVAL; 7052 7053 pid = nla_get_u32(info->attrs[NL80211_ATTR_PID]); 7054 7055 net = get_net_ns_by_pid(pid); 7056 if (IS_ERR(net)) 7057 return PTR_ERR(net); 7058 7059 err = 0; 7060 7061 /* check if anything to do */ 7062 if (!net_eq(wiphy_net(&rdev->wiphy), net)) 7063 err = cfg80211_switch_netns(rdev, net); 7064 7065 put_net(net); 7066 return err; 7067 } 7068 7069 static int nl80211_setdel_pmksa(struct sk_buff *skb, struct genl_info *info) 7070 { 7071 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 7072 int (*rdev_ops)(struct wiphy *wiphy, struct net_device *dev, 7073 struct cfg80211_pmksa *pmksa) = NULL; 7074 struct net_device *dev = info->user_ptr[1]; 7075 struct cfg80211_pmksa pmksa; 7076 7077 memset(&pmksa, 0, sizeof(struct cfg80211_pmksa)); 7078 7079 if (!info->attrs[NL80211_ATTR_MAC]) 7080 return -EINVAL; 7081 7082 if (!info->attrs[NL80211_ATTR_PMKID]) 7083 return -EINVAL; 7084 7085 pmksa.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]); 7086 pmksa.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]); 7087 7088 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION && 7089 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) 7090 return -EOPNOTSUPP; 7091 7092 switch (info->genlhdr->cmd) { 7093 case NL80211_CMD_SET_PMKSA: 7094 rdev_ops = rdev->ops->set_pmksa; 7095 break; 7096 case NL80211_CMD_DEL_PMKSA: 7097 rdev_ops = rdev->ops->del_pmksa; 7098 break; 7099 default: 7100 WARN_ON(1); 7101 break; 7102 } 7103 7104 if (!rdev_ops) 7105 return -EOPNOTSUPP; 7106 7107 return rdev_ops(&rdev->wiphy, dev, &pmksa); 7108 } 7109 7110 static int nl80211_flush_pmksa(struct sk_buff *skb, struct genl_info *info) 7111 { 7112 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 7113 struct net_device *dev = info->user_ptr[1]; 7114 7115 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION && 7116 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) 7117 return -EOPNOTSUPP; 7118 7119 if (!rdev->ops->flush_pmksa) 7120 return -EOPNOTSUPP; 7121 7122 return rdev_flush_pmksa(rdev, dev); 7123 } 7124 7125 static int nl80211_tdls_mgmt(struct sk_buff *skb, struct genl_info *info) 7126 { 7127 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 7128 struct net_device *dev = info->user_ptr[1]; 7129 u8 action_code, dialog_token; 7130 u16 status_code; 7131 u8 *peer; 7132 7133 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) || 7134 !rdev->ops->tdls_mgmt) 7135 return -EOPNOTSUPP; 7136 7137 if (!info->attrs[NL80211_ATTR_TDLS_ACTION] || 7138 !info->attrs[NL80211_ATTR_STATUS_CODE] || 7139 !info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN] || 7140 !info->attrs[NL80211_ATTR_IE] || 7141 !info->attrs[NL80211_ATTR_MAC]) 7142 return -EINVAL; 7143 7144 peer = nla_data(info->attrs[NL80211_ATTR_MAC]); 7145 action_code = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_ACTION]); 7146 status_code = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]); 7147 dialog_token = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN]); 7148 7149 return rdev_tdls_mgmt(rdev, dev, peer, action_code, 7150 dialog_token, status_code, 7151 nla_data(info->attrs[NL80211_ATTR_IE]), 7152 nla_len(info->attrs[NL80211_ATTR_IE])); 7153 } 7154 7155 static int nl80211_tdls_oper(struct sk_buff *skb, struct genl_info *info) 7156 { 7157 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 7158 struct net_device *dev = info->user_ptr[1]; 7159 enum nl80211_tdls_operation operation; 7160 u8 *peer; 7161 7162 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) || 7163 !rdev->ops->tdls_oper) 7164 return -EOPNOTSUPP; 7165 7166 if (!info->attrs[NL80211_ATTR_TDLS_OPERATION] || 7167 !info->attrs[NL80211_ATTR_MAC]) 7168 return -EINVAL; 7169 7170 operation = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_OPERATION]); 7171 peer = nla_data(info->attrs[NL80211_ATTR_MAC]); 7172 7173 return rdev_tdls_oper(rdev, dev, peer, operation); 7174 } 7175 7176 static int nl80211_remain_on_channel(struct sk_buff *skb, 7177 struct genl_info *info) 7178 { 7179 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 7180 struct wireless_dev *wdev = info->user_ptr[1]; 7181 struct cfg80211_chan_def chandef; 7182 struct sk_buff *msg; 7183 void *hdr; 7184 u64 cookie; 7185 u32 duration; 7186 int err; 7187 7188 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] || 7189 !info->attrs[NL80211_ATTR_DURATION]) 7190 return -EINVAL; 7191 7192 duration = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]); 7193 7194 if (!rdev->ops->remain_on_channel || 7195 !(rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL)) 7196 return -EOPNOTSUPP; 7197 7198 /* 7199 * We should be on that channel for at least a minimum amount of 7200 * time (10ms) but no longer than the driver supports. 7201 */ 7202 if (duration < NL80211_MIN_REMAIN_ON_CHANNEL_TIME || 7203 duration > rdev->wiphy.max_remain_on_channel_duration) 7204 return -EINVAL; 7205 7206 err = nl80211_parse_chandef(rdev, info, &chandef); 7207 if (err) 7208 return err; 7209 7210 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 7211 if (!msg) 7212 return -ENOMEM; 7213 7214 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0, 7215 NL80211_CMD_REMAIN_ON_CHANNEL); 7216 if (!hdr) { 7217 err = -ENOBUFS; 7218 goto free_msg; 7219 } 7220 7221 err = rdev_remain_on_channel(rdev, wdev, chandef.chan, 7222 duration, &cookie); 7223 7224 if (err) 7225 goto free_msg; 7226 7227 if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie)) 7228 goto nla_put_failure; 7229 7230 genlmsg_end(msg, hdr); 7231 7232 return genlmsg_reply(msg, info); 7233 7234 nla_put_failure: 7235 err = -ENOBUFS; 7236 free_msg: 7237 nlmsg_free(msg); 7238 return err; 7239 } 7240 7241 static int nl80211_cancel_remain_on_channel(struct sk_buff *skb, 7242 struct genl_info *info) 7243 { 7244 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 7245 struct wireless_dev *wdev = info->user_ptr[1]; 7246 u64 cookie; 7247 7248 if (!info->attrs[NL80211_ATTR_COOKIE]) 7249 return -EINVAL; 7250 7251 if (!rdev->ops->cancel_remain_on_channel) 7252 return -EOPNOTSUPP; 7253 7254 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]); 7255 7256 return rdev_cancel_remain_on_channel(rdev, wdev, cookie); 7257 } 7258 7259 static u32 rateset_to_mask(struct ieee80211_supported_band *sband, 7260 u8 *rates, u8 rates_len) 7261 { 7262 u8 i; 7263 u32 mask = 0; 7264 7265 for (i = 0; i < rates_len; i++) { 7266 int rate = (rates[i] & 0x7f) * 5; 7267 int ridx; 7268 for (ridx = 0; ridx < sband->n_bitrates; ridx++) { 7269 struct ieee80211_rate *srate = 7270 &sband->bitrates[ridx]; 7271 if (rate == srate->bitrate) { 7272 mask |= 1 << ridx; 7273 break; 7274 } 7275 } 7276 if (ridx == sband->n_bitrates) 7277 return 0; /* rate not found */ 7278 } 7279 7280 return mask; 7281 } 7282 7283 static bool ht_rateset_to_mask(struct ieee80211_supported_band *sband, 7284 u8 *rates, u8 rates_len, 7285 u8 mcs[IEEE80211_HT_MCS_MASK_LEN]) 7286 { 7287 u8 i; 7288 7289 memset(mcs, 0, IEEE80211_HT_MCS_MASK_LEN); 7290 7291 for (i = 0; i < rates_len; i++) { 7292 int ridx, rbit; 7293 7294 ridx = rates[i] / 8; 7295 rbit = BIT(rates[i] % 8); 7296 7297 /* check validity */ 7298 if ((ridx < 0) || (ridx >= IEEE80211_HT_MCS_MASK_LEN)) 7299 return false; 7300 7301 /* check availability */ 7302 if (sband->ht_cap.mcs.rx_mask[ridx] & rbit) 7303 mcs[ridx] |= rbit; 7304 else 7305 return false; 7306 } 7307 7308 return true; 7309 } 7310 7311 static const struct nla_policy nl80211_txattr_policy[NL80211_TXRATE_MAX + 1] = { 7312 [NL80211_TXRATE_LEGACY] = { .type = NLA_BINARY, 7313 .len = NL80211_MAX_SUPP_RATES }, 7314 [NL80211_TXRATE_MCS] = { .type = NLA_BINARY, 7315 .len = NL80211_MAX_SUPP_HT_RATES }, 7316 }; 7317 7318 static int nl80211_set_tx_bitrate_mask(struct sk_buff *skb, 7319 struct genl_info *info) 7320 { 7321 struct nlattr *tb[NL80211_TXRATE_MAX + 1]; 7322 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 7323 struct cfg80211_bitrate_mask mask; 7324 int rem, i; 7325 struct net_device *dev = info->user_ptr[1]; 7326 struct nlattr *tx_rates; 7327 struct ieee80211_supported_band *sband; 7328 7329 if (info->attrs[NL80211_ATTR_TX_RATES] == NULL) 7330 return -EINVAL; 7331 7332 if (!rdev->ops->set_bitrate_mask) 7333 return -EOPNOTSUPP; 7334 7335 memset(&mask, 0, sizeof(mask)); 7336 /* Default to all rates enabled */ 7337 for (i = 0; i < IEEE80211_NUM_BANDS; i++) { 7338 sband = rdev->wiphy.bands[i]; 7339 mask.control[i].legacy = 7340 sband ? (1 << sband->n_bitrates) - 1 : 0; 7341 if (sband) 7342 memcpy(mask.control[i].mcs, 7343 sband->ht_cap.mcs.rx_mask, 7344 sizeof(mask.control[i].mcs)); 7345 else 7346 memset(mask.control[i].mcs, 0, 7347 sizeof(mask.control[i].mcs)); 7348 } 7349 7350 /* 7351 * The nested attribute uses enum nl80211_band as the index. This maps 7352 * directly to the enum ieee80211_band values used in cfg80211. 7353 */ 7354 BUILD_BUG_ON(NL80211_MAX_SUPP_HT_RATES > IEEE80211_HT_MCS_MASK_LEN * 8); 7355 nla_for_each_nested(tx_rates, info->attrs[NL80211_ATTR_TX_RATES], rem) 7356 { 7357 enum ieee80211_band band = nla_type(tx_rates); 7358 if (band < 0 || band >= IEEE80211_NUM_BANDS) 7359 return -EINVAL; 7360 sband = rdev->wiphy.bands[band]; 7361 if (sband == NULL) 7362 return -EINVAL; 7363 nla_parse(tb, NL80211_TXRATE_MAX, nla_data(tx_rates), 7364 nla_len(tx_rates), nl80211_txattr_policy); 7365 if (tb[NL80211_TXRATE_LEGACY]) { 7366 mask.control[band].legacy = rateset_to_mask( 7367 sband, 7368 nla_data(tb[NL80211_TXRATE_LEGACY]), 7369 nla_len(tb[NL80211_TXRATE_LEGACY])); 7370 if ((mask.control[band].legacy == 0) && 7371 nla_len(tb[NL80211_TXRATE_LEGACY])) 7372 return -EINVAL; 7373 } 7374 if (tb[NL80211_TXRATE_MCS]) { 7375 if (!ht_rateset_to_mask( 7376 sband, 7377 nla_data(tb[NL80211_TXRATE_MCS]), 7378 nla_len(tb[NL80211_TXRATE_MCS]), 7379 mask.control[band].mcs)) 7380 return -EINVAL; 7381 } 7382 7383 if (mask.control[band].legacy == 0) { 7384 /* don't allow empty legacy rates if HT 7385 * is not even supported. */ 7386 if (!rdev->wiphy.bands[band]->ht_cap.ht_supported) 7387 return -EINVAL; 7388 7389 for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++) 7390 if (mask.control[band].mcs[i]) 7391 break; 7392 7393 /* legacy and mcs rates may not be both empty */ 7394 if (i == IEEE80211_HT_MCS_MASK_LEN) 7395 return -EINVAL; 7396 } 7397 } 7398 7399 return rdev_set_bitrate_mask(rdev, dev, NULL, &mask); 7400 } 7401 7402 static int nl80211_register_mgmt(struct sk_buff *skb, struct genl_info *info) 7403 { 7404 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 7405 struct wireless_dev *wdev = info->user_ptr[1]; 7406 u16 frame_type = IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION; 7407 7408 if (!info->attrs[NL80211_ATTR_FRAME_MATCH]) 7409 return -EINVAL; 7410 7411 if (info->attrs[NL80211_ATTR_FRAME_TYPE]) 7412 frame_type = nla_get_u16(info->attrs[NL80211_ATTR_FRAME_TYPE]); 7413 7414 switch (wdev->iftype) { 7415 case NL80211_IFTYPE_STATION: 7416 case NL80211_IFTYPE_ADHOC: 7417 case NL80211_IFTYPE_P2P_CLIENT: 7418 case NL80211_IFTYPE_AP: 7419 case NL80211_IFTYPE_AP_VLAN: 7420 case NL80211_IFTYPE_MESH_POINT: 7421 case NL80211_IFTYPE_P2P_GO: 7422 case NL80211_IFTYPE_P2P_DEVICE: 7423 break; 7424 default: 7425 return -EOPNOTSUPP; 7426 } 7427 7428 /* not much point in registering if we can't reply */ 7429 if (!rdev->ops->mgmt_tx) 7430 return -EOPNOTSUPP; 7431 7432 return cfg80211_mlme_register_mgmt(wdev, info->snd_portid, frame_type, 7433 nla_data(info->attrs[NL80211_ATTR_FRAME_MATCH]), 7434 nla_len(info->attrs[NL80211_ATTR_FRAME_MATCH])); 7435 } 7436 7437 static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info) 7438 { 7439 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 7440 struct wireless_dev *wdev = info->user_ptr[1]; 7441 struct cfg80211_chan_def chandef; 7442 int err; 7443 void *hdr = NULL; 7444 u64 cookie; 7445 struct sk_buff *msg = NULL; 7446 unsigned int wait = 0; 7447 bool offchan, no_cck, dont_wait_for_ack; 7448 7449 dont_wait_for_ack = info->attrs[NL80211_ATTR_DONT_WAIT_FOR_ACK]; 7450 7451 if (!info->attrs[NL80211_ATTR_FRAME]) 7452 return -EINVAL; 7453 7454 if (!rdev->ops->mgmt_tx) 7455 return -EOPNOTSUPP; 7456 7457 switch (wdev->iftype) { 7458 case NL80211_IFTYPE_P2P_DEVICE: 7459 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ]) 7460 return -EINVAL; 7461 case NL80211_IFTYPE_STATION: 7462 case NL80211_IFTYPE_ADHOC: 7463 case NL80211_IFTYPE_P2P_CLIENT: 7464 case NL80211_IFTYPE_AP: 7465 case NL80211_IFTYPE_AP_VLAN: 7466 case NL80211_IFTYPE_MESH_POINT: 7467 case NL80211_IFTYPE_P2P_GO: 7468 break; 7469 default: 7470 return -EOPNOTSUPP; 7471 } 7472 7473 if (info->attrs[NL80211_ATTR_DURATION]) { 7474 if (!(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX)) 7475 return -EINVAL; 7476 wait = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]); 7477 7478 /* 7479 * We should wait on the channel for at least a minimum amount 7480 * of time (10ms) but no longer than the driver supports. 7481 */ 7482 if (wait < NL80211_MIN_REMAIN_ON_CHANNEL_TIME || 7483 wait > rdev->wiphy.max_remain_on_channel_duration) 7484 return -EINVAL; 7485 7486 } 7487 7488 offchan = info->attrs[NL80211_ATTR_OFFCHANNEL_TX_OK]; 7489 7490 if (offchan && !(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX)) 7491 return -EINVAL; 7492 7493 no_cck = nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]); 7494 7495 /* get the channel if any has been specified, otherwise pass NULL to 7496 * the driver. The latter will use the current one 7497 */ 7498 chandef.chan = NULL; 7499 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) { 7500 err = nl80211_parse_chandef(rdev, info, &chandef); 7501 if (err) 7502 return err; 7503 } 7504 7505 if (!chandef.chan && offchan) 7506 return -EINVAL; 7507 7508 if (!dont_wait_for_ack) { 7509 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 7510 if (!msg) 7511 return -ENOMEM; 7512 7513 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0, 7514 NL80211_CMD_FRAME); 7515 if (!hdr) { 7516 err = -ENOBUFS; 7517 goto free_msg; 7518 } 7519 } 7520 7521 err = cfg80211_mlme_mgmt_tx(rdev, wdev, chandef.chan, offchan, wait, 7522 nla_data(info->attrs[NL80211_ATTR_FRAME]), 7523 nla_len(info->attrs[NL80211_ATTR_FRAME]), 7524 no_cck, dont_wait_for_ack, &cookie); 7525 if (err) 7526 goto free_msg; 7527 7528 if (msg) { 7529 if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie)) 7530 goto nla_put_failure; 7531 7532 genlmsg_end(msg, hdr); 7533 return genlmsg_reply(msg, info); 7534 } 7535 7536 return 0; 7537 7538 nla_put_failure: 7539 err = -ENOBUFS; 7540 free_msg: 7541 nlmsg_free(msg); 7542 return err; 7543 } 7544 7545 static int nl80211_tx_mgmt_cancel_wait(struct sk_buff *skb, struct genl_info *info) 7546 { 7547 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 7548 struct wireless_dev *wdev = info->user_ptr[1]; 7549 u64 cookie; 7550 7551 if (!info->attrs[NL80211_ATTR_COOKIE]) 7552 return -EINVAL; 7553 7554 if (!rdev->ops->mgmt_tx_cancel_wait) 7555 return -EOPNOTSUPP; 7556 7557 switch (wdev->iftype) { 7558 case NL80211_IFTYPE_STATION: 7559 case NL80211_IFTYPE_ADHOC: 7560 case NL80211_IFTYPE_P2P_CLIENT: 7561 case NL80211_IFTYPE_AP: 7562 case NL80211_IFTYPE_AP_VLAN: 7563 case NL80211_IFTYPE_P2P_GO: 7564 case NL80211_IFTYPE_P2P_DEVICE: 7565 break; 7566 default: 7567 return -EOPNOTSUPP; 7568 } 7569 7570 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]); 7571 7572 return rdev_mgmt_tx_cancel_wait(rdev, wdev, cookie); 7573 } 7574 7575 static int nl80211_set_power_save(struct sk_buff *skb, struct genl_info *info) 7576 { 7577 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 7578 struct wireless_dev *wdev; 7579 struct net_device *dev = info->user_ptr[1]; 7580 u8 ps_state; 7581 bool state; 7582 int err; 7583 7584 if (!info->attrs[NL80211_ATTR_PS_STATE]) 7585 return -EINVAL; 7586 7587 ps_state = nla_get_u32(info->attrs[NL80211_ATTR_PS_STATE]); 7588 7589 if (ps_state != NL80211_PS_DISABLED && ps_state != NL80211_PS_ENABLED) 7590 return -EINVAL; 7591 7592 wdev = dev->ieee80211_ptr; 7593 7594 if (!rdev->ops->set_power_mgmt) 7595 return -EOPNOTSUPP; 7596 7597 state = (ps_state == NL80211_PS_ENABLED) ? true : false; 7598 7599 if (state == wdev->ps) 7600 return 0; 7601 7602 err = rdev_set_power_mgmt(rdev, dev, state, wdev->ps_timeout); 7603 if (!err) 7604 wdev->ps = state; 7605 return err; 7606 } 7607 7608 static int nl80211_get_power_save(struct sk_buff *skb, struct genl_info *info) 7609 { 7610 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 7611 enum nl80211_ps_state ps_state; 7612 struct wireless_dev *wdev; 7613 struct net_device *dev = info->user_ptr[1]; 7614 struct sk_buff *msg; 7615 void *hdr; 7616 int err; 7617 7618 wdev = dev->ieee80211_ptr; 7619 7620 if (!rdev->ops->set_power_mgmt) 7621 return -EOPNOTSUPP; 7622 7623 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 7624 if (!msg) 7625 return -ENOMEM; 7626 7627 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0, 7628 NL80211_CMD_GET_POWER_SAVE); 7629 if (!hdr) { 7630 err = -ENOBUFS; 7631 goto free_msg; 7632 } 7633 7634 if (wdev->ps) 7635 ps_state = NL80211_PS_ENABLED; 7636 else 7637 ps_state = NL80211_PS_DISABLED; 7638 7639 if (nla_put_u32(msg, NL80211_ATTR_PS_STATE, ps_state)) 7640 goto nla_put_failure; 7641 7642 genlmsg_end(msg, hdr); 7643 return genlmsg_reply(msg, info); 7644 7645 nla_put_failure: 7646 err = -ENOBUFS; 7647 free_msg: 7648 nlmsg_free(msg); 7649 return err; 7650 } 7651 7652 static struct nla_policy 7653 nl80211_attr_cqm_policy[NL80211_ATTR_CQM_MAX + 1] __read_mostly = { 7654 [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_U32 }, 7655 [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U32 }, 7656 [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 }, 7657 [NL80211_ATTR_CQM_TXE_RATE] = { .type = NLA_U32 }, 7658 [NL80211_ATTR_CQM_TXE_PKTS] = { .type = NLA_U32 }, 7659 [NL80211_ATTR_CQM_TXE_INTVL] = { .type = NLA_U32 }, 7660 }; 7661 7662 static int nl80211_set_cqm_txe(struct genl_info *info, 7663 u32 rate, u32 pkts, u32 intvl) 7664 { 7665 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 7666 struct net_device *dev = info->user_ptr[1]; 7667 struct wireless_dev *wdev = dev->ieee80211_ptr; 7668 7669 if (rate > 100 || intvl > NL80211_CQM_TXE_MAX_INTVL) 7670 return -EINVAL; 7671 7672 if (!rdev->ops->set_cqm_txe_config) 7673 return -EOPNOTSUPP; 7674 7675 if (wdev->iftype != NL80211_IFTYPE_STATION && 7676 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT) 7677 return -EOPNOTSUPP; 7678 7679 return rdev_set_cqm_txe_config(rdev, dev, rate, pkts, intvl); 7680 } 7681 7682 static int nl80211_set_cqm_rssi(struct genl_info *info, 7683 s32 threshold, u32 hysteresis) 7684 { 7685 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 7686 struct net_device *dev = info->user_ptr[1]; 7687 struct wireless_dev *wdev = dev->ieee80211_ptr; 7688 7689 if (threshold > 0) 7690 return -EINVAL; 7691 7692 /* disabling - hysteresis should also be zero then */ 7693 if (threshold == 0) 7694 hysteresis = 0; 7695 7696 if (!rdev->ops->set_cqm_rssi_config) 7697 return -EOPNOTSUPP; 7698 7699 if (wdev->iftype != NL80211_IFTYPE_STATION && 7700 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT) 7701 return -EOPNOTSUPP; 7702 7703 return rdev_set_cqm_rssi_config(rdev, dev, threshold, hysteresis); 7704 } 7705 7706 static int nl80211_set_cqm(struct sk_buff *skb, struct genl_info *info) 7707 { 7708 struct nlattr *attrs[NL80211_ATTR_CQM_MAX + 1]; 7709 struct nlattr *cqm; 7710 int err; 7711 7712 cqm = info->attrs[NL80211_ATTR_CQM]; 7713 if (!cqm) 7714 return -EINVAL; 7715 7716 err = nla_parse_nested(attrs, NL80211_ATTR_CQM_MAX, cqm, 7717 nl80211_attr_cqm_policy); 7718 if (err) 7719 return err; 7720 7721 if (attrs[NL80211_ATTR_CQM_RSSI_THOLD] && 7722 attrs[NL80211_ATTR_CQM_RSSI_HYST]) { 7723 s32 threshold = nla_get_s32(attrs[NL80211_ATTR_CQM_RSSI_THOLD]); 7724 u32 hysteresis = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_HYST]); 7725 7726 return nl80211_set_cqm_rssi(info, threshold, hysteresis); 7727 } 7728 7729 if (attrs[NL80211_ATTR_CQM_TXE_RATE] && 7730 attrs[NL80211_ATTR_CQM_TXE_PKTS] && 7731 attrs[NL80211_ATTR_CQM_TXE_INTVL]) { 7732 u32 rate = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_RATE]); 7733 u32 pkts = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_PKTS]); 7734 u32 intvl = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_INTVL]); 7735 7736 return nl80211_set_cqm_txe(info, rate, pkts, intvl); 7737 } 7738 7739 return -EINVAL; 7740 } 7741 7742 static int nl80211_join_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 struct mesh_config cfg; 7747 struct mesh_setup setup; 7748 int err; 7749 7750 /* start with default */ 7751 memcpy(&cfg, &default_mesh_config, sizeof(cfg)); 7752 memcpy(&setup, &default_mesh_setup, sizeof(setup)); 7753 7754 if (info->attrs[NL80211_ATTR_MESH_CONFIG]) { 7755 /* and parse parameters if given */ 7756 err = nl80211_parse_mesh_config(info, &cfg, NULL); 7757 if (err) 7758 return err; 7759 } 7760 7761 if (!info->attrs[NL80211_ATTR_MESH_ID] || 7762 !nla_len(info->attrs[NL80211_ATTR_MESH_ID])) 7763 return -EINVAL; 7764 7765 setup.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]); 7766 setup.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]); 7767 7768 if (info->attrs[NL80211_ATTR_MCAST_RATE] && 7769 !nl80211_parse_mcast_rate(rdev, setup.mcast_rate, 7770 nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE]))) 7771 return -EINVAL; 7772 7773 if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) { 7774 setup.beacon_interval = 7775 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]); 7776 if (setup.beacon_interval < 10 || 7777 setup.beacon_interval > 10000) 7778 return -EINVAL; 7779 } 7780 7781 if (info->attrs[NL80211_ATTR_DTIM_PERIOD]) { 7782 setup.dtim_period = 7783 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]); 7784 if (setup.dtim_period < 1 || setup.dtim_period > 100) 7785 return -EINVAL; 7786 } 7787 7788 if (info->attrs[NL80211_ATTR_MESH_SETUP]) { 7789 /* parse additional setup parameters if given */ 7790 err = nl80211_parse_mesh_setup(info, &setup); 7791 if (err) 7792 return err; 7793 } 7794 7795 if (setup.user_mpm) 7796 cfg.auto_open_plinks = false; 7797 7798 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) { 7799 err = nl80211_parse_chandef(rdev, info, &setup.chandef); 7800 if (err) 7801 return err; 7802 } else { 7803 /* cfg80211_join_mesh() will sort it out */ 7804 setup.chandef.chan = NULL; 7805 } 7806 7807 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) { 7808 u8 *rates = nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]); 7809 int n_rates = 7810 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]); 7811 struct ieee80211_supported_band *sband; 7812 7813 if (!setup.chandef.chan) 7814 return -EINVAL; 7815 7816 sband = rdev->wiphy.bands[setup.chandef.chan->band]; 7817 7818 err = ieee80211_get_ratemask(sband, rates, n_rates, 7819 &setup.basic_rates); 7820 if (err) 7821 return err; 7822 } 7823 7824 return cfg80211_join_mesh(rdev, dev, &setup, &cfg); 7825 } 7826 7827 static int nl80211_leave_mesh(struct sk_buff *skb, struct genl_info *info) 7828 { 7829 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 7830 struct net_device *dev = info->user_ptr[1]; 7831 7832 return cfg80211_leave_mesh(rdev, dev); 7833 } 7834 7835 #ifdef CONFIG_PM 7836 static int nl80211_send_wowlan_patterns(struct sk_buff *msg, 7837 struct cfg80211_registered_device *rdev) 7838 { 7839 struct cfg80211_wowlan *wowlan = rdev->wiphy.wowlan_config; 7840 struct nlattr *nl_pats, *nl_pat; 7841 int i, pat_len; 7842 7843 if (!wowlan->n_patterns) 7844 return 0; 7845 7846 nl_pats = nla_nest_start(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN); 7847 if (!nl_pats) 7848 return -ENOBUFS; 7849 7850 for (i = 0; i < wowlan->n_patterns; i++) { 7851 nl_pat = nla_nest_start(msg, i + 1); 7852 if (!nl_pat) 7853 return -ENOBUFS; 7854 pat_len = wowlan->patterns[i].pattern_len; 7855 if (nla_put(msg, NL80211_PKTPAT_MASK, DIV_ROUND_UP(pat_len, 8), 7856 wowlan->patterns[i].mask) || 7857 nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len, 7858 wowlan->patterns[i].pattern) || 7859 nla_put_u32(msg, NL80211_PKTPAT_OFFSET, 7860 wowlan->patterns[i].pkt_offset)) 7861 return -ENOBUFS; 7862 nla_nest_end(msg, nl_pat); 7863 } 7864 nla_nest_end(msg, nl_pats); 7865 7866 return 0; 7867 } 7868 7869 static int nl80211_send_wowlan_tcp(struct sk_buff *msg, 7870 struct cfg80211_wowlan_tcp *tcp) 7871 { 7872 struct nlattr *nl_tcp; 7873 7874 if (!tcp) 7875 return 0; 7876 7877 nl_tcp = nla_nest_start(msg, NL80211_WOWLAN_TRIG_TCP_CONNECTION); 7878 if (!nl_tcp) 7879 return -ENOBUFS; 7880 7881 if (nla_put_be32(msg, NL80211_WOWLAN_TCP_SRC_IPV4, tcp->src) || 7882 nla_put_be32(msg, NL80211_WOWLAN_TCP_DST_IPV4, tcp->dst) || 7883 nla_put(msg, NL80211_WOWLAN_TCP_DST_MAC, ETH_ALEN, tcp->dst_mac) || 7884 nla_put_u16(msg, NL80211_WOWLAN_TCP_SRC_PORT, tcp->src_port) || 7885 nla_put_u16(msg, NL80211_WOWLAN_TCP_DST_PORT, tcp->dst_port) || 7886 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD, 7887 tcp->payload_len, tcp->payload) || 7888 nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL, 7889 tcp->data_interval) || 7890 nla_put(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD, 7891 tcp->wake_len, tcp->wake_data) || 7892 nla_put(msg, NL80211_WOWLAN_TCP_WAKE_MASK, 7893 DIV_ROUND_UP(tcp->wake_len, 8), tcp->wake_mask)) 7894 return -ENOBUFS; 7895 7896 if (tcp->payload_seq.len && 7897 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ, 7898 sizeof(tcp->payload_seq), &tcp->payload_seq)) 7899 return -ENOBUFS; 7900 7901 if (tcp->payload_tok.len && 7902 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN, 7903 sizeof(tcp->payload_tok) + tcp->tokens_size, 7904 &tcp->payload_tok)) 7905 return -ENOBUFS; 7906 7907 nla_nest_end(msg, nl_tcp); 7908 7909 return 0; 7910 } 7911 7912 static int nl80211_get_wowlan(struct sk_buff *skb, struct genl_info *info) 7913 { 7914 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 7915 struct sk_buff *msg; 7916 void *hdr; 7917 u32 size = NLMSG_DEFAULT_SIZE; 7918 7919 if (!rdev->wiphy.wowlan) 7920 return -EOPNOTSUPP; 7921 7922 if (rdev->wiphy.wowlan_config && rdev->wiphy.wowlan_config->tcp) { 7923 /* adjust size to have room for all the data */ 7924 size += rdev->wiphy.wowlan_config->tcp->tokens_size + 7925 rdev->wiphy.wowlan_config->tcp->payload_len + 7926 rdev->wiphy.wowlan_config->tcp->wake_len + 7927 rdev->wiphy.wowlan_config->tcp->wake_len / 8; 7928 } 7929 7930 msg = nlmsg_new(size, GFP_KERNEL); 7931 if (!msg) 7932 return -ENOMEM; 7933 7934 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0, 7935 NL80211_CMD_GET_WOWLAN); 7936 if (!hdr) 7937 goto nla_put_failure; 7938 7939 if (rdev->wiphy.wowlan_config) { 7940 struct nlattr *nl_wowlan; 7941 7942 nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS); 7943 if (!nl_wowlan) 7944 goto nla_put_failure; 7945 7946 if ((rdev->wiphy.wowlan_config->any && 7947 nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) || 7948 (rdev->wiphy.wowlan_config->disconnect && 7949 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) || 7950 (rdev->wiphy.wowlan_config->magic_pkt && 7951 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) || 7952 (rdev->wiphy.wowlan_config->gtk_rekey_failure && 7953 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) || 7954 (rdev->wiphy.wowlan_config->eap_identity_req && 7955 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) || 7956 (rdev->wiphy.wowlan_config->four_way_handshake && 7957 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) || 7958 (rdev->wiphy.wowlan_config->rfkill_release && 7959 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE))) 7960 goto nla_put_failure; 7961 7962 if (nl80211_send_wowlan_patterns(msg, rdev)) 7963 goto nla_put_failure; 7964 7965 if (nl80211_send_wowlan_tcp(msg, 7966 rdev->wiphy.wowlan_config->tcp)) 7967 goto nla_put_failure; 7968 7969 nla_nest_end(msg, nl_wowlan); 7970 } 7971 7972 genlmsg_end(msg, hdr); 7973 return genlmsg_reply(msg, info); 7974 7975 nla_put_failure: 7976 nlmsg_free(msg); 7977 return -ENOBUFS; 7978 } 7979 7980 static int nl80211_parse_wowlan_tcp(struct cfg80211_registered_device *rdev, 7981 struct nlattr *attr, 7982 struct cfg80211_wowlan *trig) 7983 { 7984 struct nlattr *tb[NUM_NL80211_WOWLAN_TCP]; 7985 struct cfg80211_wowlan_tcp *cfg; 7986 struct nl80211_wowlan_tcp_data_token *tok = NULL; 7987 struct nl80211_wowlan_tcp_data_seq *seq = NULL; 7988 u32 size; 7989 u32 data_size, wake_size, tokens_size = 0, wake_mask_size; 7990 int err, port; 7991 7992 if (!rdev->wiphy.wowlan->tcp) 7993 return -EINVAL; 7994 7995 err = nla_parse(tb, MAX_NL80211_WOWLAN_TCP, 7996 nla_data(attr), nla_len(attr), 7997 nl80211_wowlan_tcp_policy); 7998 if (err) 7999 return err; 8000 8001 if (!tb[NL80211_WOWLAN_TCP_SRC_IPV4] || 8002 !tb[NL80211_WOWLAN_TCP_DST_IPV4] || 8003 !tb[NL80211_WOWLAN_TCP_DST_MAC] || 8004 !tb[NL80211_WOWLAN_TCP_DST_PORT] || 8005 !tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD] || 8006 !tb[NL80211_WOWLAN_TCP_DATA_INTERVAL] || 8007 !tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD] || 8008 !tb[NL80211_WOWLAN_TCP_WAKE_MASK]) 8009 return -EINVAL; 8010 8011 data_size = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]); 8012 if (data_size > rdev->wiphy.wowlan->tcp->data_payload_max) 8013 return -EINVAL; 8014 8015 if (nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) > 8016 rdev->wiphy.wowlan->tcp->data_interval_max || 8017 nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) == 0) 8018 return -EINVAL; 8019 8020 wake_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]); 8021 if (wake_size > rdev->wiphy.wowlan->tcp->wake_payload_max) 8022 return -EINVAL; 8023 8024 wake_mask_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_MASK]); 8025 if (wake_mask_size != DIV_ROUND_UP(wake_size, 8)) 8026 return -EINVAL; 8027 8028 if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]) { 8029 u32 tokln = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]); 8030 8031 tok = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]); 8032 tokens_size = tokln - sizeof(*tok); 8033 8034 if (!tok->len || tokens_size % tok->len) 8035 return -EINVAL; 8036 if (!rdev->wiphy.wowlan->tcp->tok) 8037 return -EINVAL; 8038 if (tok->len > rdev->wiphy.wowlan->tcp->tok->max_len) 8039 return -EINVAL; 8040 if (tok->len < rdev->wiphy.wowlan->tcp->tok->min_len) 8041 return -EINVAL; 8042 if (tokens_size > rdev->wiphy.wowlan->tcp->tok->bufsize) 8043 return -EINVAL; 8044 if (tok->offset + tok->len > data_size) 8045 return -EINVAL; 8046 } 8047 8048 if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]) { 8049 seq = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]); 8050 if (!rdev->wiphy.wowlan->tcp->seq) 8051 return -EINVAL; 8052 if (seq->len == 0 || seq->len > 4) 8053 return -EINVAL; 8054 if (seq->len + seq->offset > data_size) 8055 return -EINVAL; 8056 } 8057 8058 size = sizeof(*cfg); 8059 size += data_size; 8060 size += wake_size + wake_mask_size; 8061 size += tokens_size; 8062 8063 cfg = kzalloc(size, GFP_KERNEL); 8064 if (!cfg) 8065 return -ENOMEM; 8066 cfg->src = nla_get_be32(tb[NL80211_WOWLAN_TCP_SRC_IPV4]); 8067 cfg->dst = nla_get_be32(tb[NL80211_WOWLAN_TCP_DST_IPV4]); 8068 memcpy(cfg->dst_mac, nla_data(tb[NL80211_WOWLAN_TCP_DST_MAC]), 8069 ETH_ALEN); 8070 if (tb[NL80211_WOWLAN_TCP_SRC_PORT]) 8071 port = nla_get_u16(tb[NL80211_WOWLAN_TCP_SRC_PORT]); 8072 else 8073 port = 0; 8074 #ifdef CONFIG_INET 8075 /* allocate a socket and port for it and use it */ 8076 err = __sock_create(wiphy_net(&rdev->wiphy), PF_INET, SOCK_STREAM, 8077 IPPROTO_TCP, &cfg->sock, 1); 8078 if (err) { 8079 kfree(cfg); 8080 return err; 8081 } 8082 if (inet_csk_get_port(cfg->sock->sk, port)) { 8083 sock_release(cfg->sock); 8084 kfree(cfg); 8085 return -EADDRINUSE; 8086 } 8087 cfg->src_port = inet_sk(cfg->sock->sk)->inet_num; 8088 #else 8089 if (!port) { 8090 kfree(cfg); 8091 return -EINVAL; 8092 } 8093 cfg->src_port = port; 8094 #endif 8095 8096 cfg->dst_port = nla_get_u16(tb[NL80211_WOWLAN_TCP_DST_PORT]); 8097 cfg->payload_len = data_size; 8098 cfg->payload = (u8 *)cfg + sizeof(*cfg) + tokens_size; 8099 memcpy((void *)cfg->payload, 8100 nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]), 8101 data_size); 8102 if (seq) 8103 cfg->payload_seq = *seq; 8104 cfg->data_interval = nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]); 8105 cfg->wake_len = wake_size; 8106 cfg->wake_data = (u8 *)cfg + sizeof(*cfg) + tokens_size + data_size; 8107 memcpy((void *)cfg->wake_data, 8108 nla_data(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]), 8109 wake_size); 8110 cfg->wake_mask = (u8 *)cfg + sizeof(*cfg) + tokens_size + 8111 data_size + wake_size; 8112 memcpy((void *)cfg->wake_mask, 8113 nla_data(tb[NL80211_WOWLAN_TCP_WAKE_MASK]), 8114 wake_mask_size); 8115 if (tok) { 8116 cfg->tokens_size = tokens_size; 8117 memcpy(&cfg->payload_tok, tok, sizeof(*tok) + tokens_size); 8118 } 8119 8120 trig->tcp = cfg; 8121 8122 return 0; 8123 } 8124 8125 static int nl80211_set_wowlan(struct sk_buff *skb, struct genl_info *info) 8126 { 8127 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 8128 struct nlattr *tb[NUM_NL80211_WOWLAN_TRIG]; 8129 struct cfg80211_wowlan new_triggers = {}; 8130 struct cfg80211_wowlan *ntrig; 8131 const struct wiphy_wowlan_support *wowlan = rdev->wiphy.wowlan; 8132 int err, i; 8133 bool prev_enabled = rdev->wiphy.wowlan_config; 8134 8135 if (!wowlan) 8136 return -EOPNOTSUPP; 8137 8138 if (!info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]) { 8139 cfg80211_rdev_free_wowlan(rdev); 8140 rdev->wiphy.wowlan_config = NULL; 8141 goto set_wakeup; 8142 } 8143 8144 err = nla_parse(tb, MAX_NL80211_WOWLAN_TRIG, 8145 nla_data(info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]), 8146 nla_len(info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]), 8147 nl80211_wowlan_policy); 8148 if (err) 8149 return err; 8150 8151 if (tb[NL80211_WOWLAN_TRIG_ANY]) { 8152 if (!(wowlan->flags & WIPHY_WOWLAN_ANY)) 8153 return -EINVAL; 8154 new_triggers.any = true; 8155 } 8156 8157 if (tb[NL80211_WOWLAN_TRIG_DISCONNECT]) { 8158 if (!(wowlan->flags & WIPHY_WOWLAN_DISCONNECT)) 8159 return -EINVAL; 8160 new_triggers.disconnect = true; 8161 } 8162 8163 if (tb[NL80211_WOWLAN_TRIG_MAGIC_PKT]) { 8164 if (!(wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT)) 8165 return -EINVAL; 8166 new_triggers.magic_pkt = true; 8167 } 8168 8169 if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED]) 8170 return -EINVAL; 8171 8172 if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE]) { 8173 if (!(wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE)) 8174 return -EINVAL; 8175 new_triggers.gtk_rekey_failure = true; 8176 } 8177 8178 if (tb[NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST]) { 8179 if (!(wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ)) 8180 return -EINVAL; 8181 new_triggers.eap_identity_req = true; 8182 } 8183 8184 if (tb[NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE]) { 8185 if (!(wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE)) 8186 return -EINVAL; 8187 new_triggers.four_way_handshake = true; 8188 } 8189 8190 if (tb[NL80211_WOWLAN_TRIG_RFKILL_RELEASE]) { 8191 if (!(wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE)) 8192 return -EINVAL; 8193 new_triggers.rfkill_release = true; 8194 } 8195 8196 if (tb[NL80211_WOWLAN_TRIG_PKT_PATTERN]) { 8197 struct nlattr *pat; 8198 int n_patterns = 0; 8199 int rem, pat_len, mask_len, pkt_offset; 8200 struct nlattr *pat_tb[NUM_NL80211_PKTPAT]; 8201 8202 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN], 8203 rem) 8204 n_patterns++; 8205 if (n_patterns > wowlan->n_patterns) 8206 return -EINVAL; 8207 8208 new_triggers.patterns = kcalloc(n_patterns, 8209 sizeof(new_triggers.patterns[0]), 8210 GFP_KERNEL); 8211 if (!new_triggers.patterns) 8212 return -ENOMEM; 8213 8214 new_triggers.n_patterns = n_patterns; 8215 i = 0; 8216 8217 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN], 8218 rem) { 8219 nla_parse(pat_tb, MAX_NL80211_PKTPAT, nla_data(pat), 8220 nla_len(pat), NULL); 8221 err = -EINVAL; 8222 if (!pat_tb[NL80211_PKTPAT_MASK] || 8223 !pat_tb[NL80211_PKTPAT_PATTERN]) 8224 goto error; 8225 pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]); 8226 mask_len = DIV_ROUND_UP(pat_len, 8); 8227 if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len) 8228 goto error; 8229 if (pat_len > wowlan->pattern_max_len || 8230 pat_len < wowlan->pattern_min_len) 8231 goto error; 8232 8233 if (!pat_tb[NL80211_PKTPAT_OFFSET]) 8234 pkt_offset = 0; 8235 else 8236 pkt_offset = nla_get_u32( 8237 pat_tb[NL80211_PKTPAT_OFFSET]); 8238 if (pkt_offset > wowlan->max_pkt_offset) 8239 goto error; 8240 new_triggers.patterns[i].pkt_offset = pkt_offset; 8241 8242 new_triggers.patterns[i].mask = 8243 kmalloc(mask_len + pat_len, GFP_KERNEL); 8244 if (!new_triggers.patterns[i].mask) { 8245 err = -ENOMEM; 8246 goto error; 8247 } 8248 new_triggers.patterns[i].pattern = 8249 new_triggers.patterns[i].mask + mask_len; 8250 memcpy(new_triggers.patterns[i].mask, 8251 nla_data(pat_tb[NL80211_PKTPAT_MASK]), 8252 mask_len); 8253 new_triggers.patterns[i].pattern_len = pat_len; 8254 memcpy(new_triggers.patterns[i].pattern, 8255 nla_data(pat_tb[NL80211_PKTPAT_PATTERN]), 8256 pat_len); 8257 i++; 8258 } 8259 } 8260 8261 if (tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION]) { 8262 err = nl80211_parse_wowlan_tcp( 8263 rdev, tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION], 8264 &new_triggers); 8265 if (err) 8266 goto error; 8267 } 8268 8269 ntrig = kmemdup(&new_triggers, sizeof(new_triggers), GFP_KERNEL); 8270 if (!ntrig) { 8271 err = -ENOMEM; 8272 goto error; 8273 } 8274 cfg80211_rdev_free_wowlan(rdev); 8275 rdev->wiphy.wowlan_config = ntrig; 8276 8277 set_wakeup: 8278 if (rdev->ops->set_wakeup && 8279 prev_enabled != !!rdev->wiphy.wowlan_config) 8280 rdev_set_wakeup(rdev, rdev->wiphy.wowlan_config); 8281 8282 return 0; 8283 error: 8284 for (i = 0; i < new_triggers.n_patterns; i++) 8285 kfree(new_triggers.patterns[i].mask); 8286 kfree(new_triggers.patterns); 8287 if (new_triggers.tcp && new_triggers.tcp->sock) 8288 sock_release(new_triggers.tcp->sock); 8289 kfree(new_triggers.tcp); 8290 return err; 8291 } 8292 #endif 8293 8294 static int nl80211_send_coalesce_rules(struct sk_buff *msg, 8295 struct cfg80211_registered_device *rdev) 8296 { 8297 struct nlattr *nl_pats, *nl_pat, *nl_rule, *nl_rules; 8298 int i, j, pat_len; 8299 struct cfg80211_coalesce_rules *rule; 8300 8301 if (!rdev->coalesce->n_rules) 8302 return 0; 8303 8304 nl_rules = nla_nest_start(msg, NL80211_ATTR_COALESCE_RULE); 8305 if (!nl_rules) 8306 return -ENOBUFS; 8307 8308 for (i = 0; i < rdev->coalesce->n_rules; i++) { 8309 nl_rule = nla_nest_start(msg, i + 1); 8310 if (!nl_rule) 8311 return -ENOBUFS; 8312 8313 rule = &rdev->coalesce->rules[i]; 8314 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_DELAY, 8315 rule->delay)) 8316 return -ENOBUFS; 8317 8318 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_CONDITION, 8319 rule->condition)) 8320 return -ENOBUFS; 8321 8322 nl_pats = nla_nest_start(msg, 8323 NL80211_ATTR_COALESCE_RULE_PKT_PATTERN); 8324 if (!nl_pats) 8325 return -ENOBUFS; 8326 8327 for (j = 0; j < rule->n_patterns; j++) { 8328 nl_pat = nla_nest_start(msg, j + 1); 8329 if (!nl_pat) 8330 return -ENOBUFS; 8331 pat_len = rule->patterns[j].pattern_len; 8332 if (nla_put(msg, NL80211_PKTPAT_MASK, 8333 DIV_ROUND_UP(pat_len, 8), 8334 rule->patterns[j].mask) || 8335 nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len, 8336 rule->patterns[j].pattern) || 8337 nla_put_u32(msg, NL80211_PKTPAT_OFFSET, 8338 rule->patterns[j].pkt_offset)) 8339 return -ENOBUFS; 8340 nla_nest_end(msg, nl_pat); 8341 } 8342 nla_nest_end(msg, nl_pats); 8343 nla_nest_end(msg, nl_rule); 8344 } 8345 nla_nest_end(msg, nl_rules); 8346 8347 return 0; 8348 } 8349 8350 static int nl80211_get_coalesce(struct sk_buff *skb, struct genl_info *info) 8351 { 8352 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 8353 struct sk_buff *msg; 8354 void *hdr; 8355 8356 if (!rdev->wiphy.coalesce) 8357 return -EOPNOTSUPP; 8358 8359 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 8360 if (!msg) 8361 return -ENOMEM; 8362 8363 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0, 8364 NL80211_CMD_GET_COALESCE); 8365 if (!hdr) 8366 goto nla_put_failure; 8367 8368 if (rdev->coalesce && nl80211_send_coalesce_rules(msg, rdev)) 8369 goto nla_put_failure; 8370 8371 genlmsg_end(msg, hdr); 8372 return genlmsg_reply(msg, info); 8373 8374 nla_put_failure: 8375 nlmsg_free(msg); 8376 return -ENOBUFS; 8377 } 8378 8379 void cfg80211_rdev_free_coalesce(struct cfg80211_registered_device *rdev) 8380 { 8381 struct cfg80211_coalesce *coalesce = rdev->coalesce; 8382 int i, j; 8383 struct cfg80211_coalesce_rules *rule; 8384 8385 if (!coalesce) 8386 return; 8387 8388 for (i = 0; i < coalesce->n_rules; i++) { 8389 rule = &coalesce->rules[i]; 8390 for (j = 0; j < rule->n_patterns; j++) 8391 kfree(rule->patterns[j].mask); 8392 kfree(rule->patterns); 8393 } 8394 kfree(coalesce->rules); 8395 kfree(coalesce); 8396 rdev->coalesce = NULL; 8397 } 8398 8399 static int nl80211_parse_coalesce_rule(struct cfg80211_registered_device *rdev, 8400 struct nlattr *rule, 8401 struct cfg80211_coalesce_rules *new_rule) 8402 { 8403 int err, i; 8404 const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce; 8405 struct nlattr *tb[NUM_NL80211_ATTR_COALESCE_RULE], *pat; 8406 int rem, pat_len, mask_len, pkt_offset, n_patterns = 0; 8407 struct nlattr *pat_tb[NUM_NL80211_PKTPAT]; 8408 8409 err = nla_parse(tb, NL80211_ATTR_COALESCE_RULE_MAX, nla_data(rule), 8410 nla_len(rule), nl80211_coalesce_policy); 8411 if (err) 8412 return err; 8413 8414 if (tb[NL80211_ATTR_COALESCE_RULE_DELAY]) 8415 new_rule->delay = 8416 nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_DELAY]); 8417 if (new_rule->delay > coalesce->max_delay) 8418 return -EINVAL; 8419 8420 if (tb[NL80211_ATTR_COALESCE_RULE_CONDITION]) 8421 new_rule->condition = 8422 nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_CONDITION]); 8423 if (new_rule->condition != NL80211_COALESCE_CONDITION_MATCH && 8424 new_rule->condition != NL80211_COALESCE_CONDITION_NO_MATCH) 8425 return -EINVAL; 8426 8427 if (!tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN]) 8428 return -EINVAL; 8429 8430 nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN], 8431 rem) 8432 n_patterns++; 8433 if (n_patterns > coalesce->n_patterns) 8434 return -EINVAL; 8435 8436 new_rule->patterns = kcalloc(n_patterns, sizeof(new_rule->patterns[0]), 8437 GFP_KERNEL); 8438 if (!new_rule->patterns) 8439 return -ENOMEM; 8440 8441 new_rule->n_patterns = n_patterns; 8442 i = 0; 8443 8444 nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN], 8445 rem) { 8446 nla_parse(pat_tb, MAX_NL80211_PKTPAT, nla_data(pat), 8447 nla_len(pat), NULL); 8448 if (!pat_tb[NL80211_PKTPAT_MASK] || 8449 !pat_tb[NL80211_PKTPAT_PATTERN]) 8450 return -EINVAL; 8451 pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]); 8452 mask_len = DIV_ROUND_UP(pat_len, 8); 8453 if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len) 8454 return -EINVAL; 8455 if (pat_len > coalesce->pattern_max_len || 8456 pat_len < coalesce->pattern_min_len) 8457 return -EINVAL; 8458 8459 if (!pat_tb[NL80211_PKTPAT_OFFSET]) 8460 pkt_offset = 0; 8461 else 8462 pkt_offset = nla_get_u32(pat_tb[NL80211_PKTPAT_OFFSET]); 8463 if (pkt_offset > coalesce->max_pkt_offset) 8464 return -EINVAL; 8465 new_rule->patterns[i].pkt_offset = pkt_offset; 8466 8467 new_rule->patterns[i].mask = 8468 kmalloc(mask_len + pat_len, GFP_KERNEL); 8469 if (!new_rule->patterns[i].mask) 8470 return -ENOMEM; 8471 new_rule->patterns[i].pattern = 8472 new_rule->patterns[i].mask + mask_len; 8473 memcpy(new_rule->patterns[i].mask, 8474 nla_data(pat_tb[NL80211_PKTPAT_MASK]), mask_len); 8475 new_rule->patterns[i].pattern_len = pat_len; 8476 memcpy(new_rule->patterns[i].pattern, 8477 nla_data(pat_tb[NL80211_PKTPAT_PATTERN]), pat_len); 8478 i++; 8479 } 8480 8481 return 0; 8482 } 8483 8484 static int nl80211_set_coalesce(struct sk_buff *skb, struct genl_info *info) 8485 { 8486 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 8487 const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce; 8488 struct cfg80211_coalesce new_coalesce = {}; 8489 struct cfg80211_coalesce *n_coalesce; 8490 int err, rem_rule, n_rules = 0, i, j; 8491 struct nlattr *rule; 8492 struct cfg80211_coalesce_rules *tmp_rule; 8493 8494 if (!rdev->wiphy.coalesce || !rdev->ops->set_coalesce) 8495 return -EOPNOTSUPP; 8496 8497 if (!info->attrs[NL80211_ATTR_COALESCE_RULE]) { 8498 cfg80211_rdev_free_coalesce(rdev); 8499 rdev->ops->set_coalesce(&rdev->wiphy, NULL); 8500 return 0; 8501 } 8502 8503 nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE], 8504 rem_rule) 8505 n_rules++; 8506 if (n_rules > coalesce->n_rules) 8507 return -EINVAL; 8508 8509 new_coalesce.rules = kcalloc(n_rules, sizeof(new_coalesce.rules[0]), 8510 GFP_KERNEL); 8511 if (!new_coalesce.rules) 8512 return -ENOMEM; 8513 8514 new_coalesce.n_rules = n_rules; 8515 i = 0; 8516 8517 nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE], 8518 rem_rule) { 8519 err = nl80211_parse_coalesce_rule(rdev, rule, 8520 &new_coalesce.rules[i]); 8521 if (err) 8522 goto error; 8523 8524 i++; 8525 } 8526 8527 err = rdev->ops->set_coalesce(&rdev->wiphy, &new_coalesce); 8528 if (err) 8529 goto error; 8530 8531 n_coalesce = kmemdup(&new_coalesce, sizeof(new_coalesce), GFP_KERNEL); 8532 if (!n_coalesce) { 8533 err = -ENOMEM; 8534 goto error; 8535 } 8536 cfg80211_rdev_free_coalesce(rdev); 8537 rdev->coalesce = n_coalesce; 8538 8539 return 0; 8540 error: 8541 for (i = 0; i < new_coalesce.n_rules; i++) { 8542 tmp_rule = &new_coalesce.rules[i]; 8543 for (j = 0; j < tmp_rule->n_patterns; j++) 8544 kfree(tmp_rule->patterns[j].mask); 8545 kfree(tmp_rule->patterns); 8546 } 8547 kfree(new_coalesce.rules); 8548 8549 return err; 8550 } 8551 8552 static int nl80211_set_rekey_data(struct sk_buff *skb, struct genl_info *info) 8553 { 8554 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 8555 struct net_device *dev = info->user_ptr[1]; 8556 struct wireless_dev *wdev = dev->ieee80211_ptr; 8557 struct nlattr *tb[NUM_NL80211_REKEY_DATA]; 8558 struct cfg80211_gtk_rekey_data rekey_data; 8559 int err; 8560 8561 if (!info->attrs[NL80211_ATTR_REKEY_DATA]) 8562 return -EINVAL; 8563 8564 err = nla_parse(tb, MAX_NL80211_REKEY_DATA, 8565 nla_data(info->attrs[NL80211_ATTR_REKEY_DATA]), 8566 nla_len(info->attrs[NL80211_ATTR_REKEY_DATA]), 8567 nl80211_rekey_policy); 8568 if (err) 8569 return err; 8570 8571 if (nla_len(tb[NL80211_REKEY_DATA_REPLAY_CTR]) != NL80211_REPLAY_CTR_LEN) 8572 return -ERANGE; 8573 if (nla_len(tb[NL80211_REKEY_DATA_KEK]) != NL80211_KEK_LEN) 8574 return -ERANGE; 8575 if (nla_len(tb[NL80211_REKEY_DATA_KCK]) != NL80211_KCK_LEN) 8576 return -ERANGE; 8577 8578 memcpy(rekey_data.kek, nla_data(tb[NL80211_REKEY_DATA_KEK]), 8579 NL80211_KEK_LEN); 8580 memcpy(rekey_data.kck, nla_data(tb[NL80211_REKEY_DATA_KCK]), 8581 NL80211_KCK_LEN); 8582 memcpy(rekey_data.replay_ctr, 8583 nla_data(tb[NL80211_REKEY_DATA_REPLAY_CTR]), 8584 NL80211_REPLAY_CTR_LEN); 8585 8586 wdev_lock(wdev); 8587 if (!wdev->current_bss) { 8588 err = -ENOTCONN; 8589 goto out; 8590 } 8591 8592 if (!rdev->ops->set_rekey_data) { 8593 err = -EOPNOTSUPP; 8594 goto out; 8595 } 8596 8597 err = rdev_set_rekey_data(rdev, dev, &rekey_data); 8598 out: 8599 wdev_unlock(wdev); 8600 return err; 8601 } 8602 8603 static int nl80211_register_unexpected_frame(struct sk_buff *skb, 8604 struct genl_info *info) 8605 { 8606 struct net_device *dev = info->user_ptr[1]; 8607 struct wireless_dev *wdev = dev->ieee80211_ptr; 8608 8609 if (wdev->iftype != NL80211_IFTYPE_AP && 8610 wdev->iftype != NL80211_IFTYPE_P2P_GO) 8611 return -EINVAL; 8612 8613 if (wdev->ap_unexpected_nlportid) 8614 return -EBUSY; 8615 8616 wdev->ap_unexpected_nlportid = info->snd_portid; 8617 return 0; 8618 } 8619 8620 static int nl80211_probe_client(struct sk_buff *skb, 8621 struct genl_info *info) 8622 { 8623 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 8624 struct net_device *dev = info->user_ptr[1]; 8625 struct wireless_dev *wdev = dev->ieee80211_ptr; 8626 struct sk_buff *msg; 8627 void *hdr; 8628 const u8 *addr; 8629 u64 cookie; 8630 int err; 8631 8632 if (wdev->iftype != NL80211_IFTYPE_AP && 8633 wdev->iftype != NL80211_IFTYPE_P2P_GO) 8634 return -EOPNOTSUPP; 8635 8636 if (!info->attrs[NL80211_ATTR_MAC]) 8637 return -EINVAL; 8638 8639 if (!rdev->ops->probe_client) 8640 return -EOPNOTSUPP; 8641 8642 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 8643 if (!msg) 8644 return -ENOMEM; 8645 8646 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0, 8647 NL80211_CMD_PROBE_CLIENT); 8648 if (!hdr) { 8649 err = -ENOBUFS; 8650 goto free_msg; 8651 } 8652 8653 addr = nla_data(info->attrs[NL80211_ATTR_MAC]); 8654 8655 err = rdev_probe_client(rdev, dev, addr, &cookie); 8656 if (err) 8657 goto free_msg; 8658 8659 if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie)) 8660 goto nla_put_failure; 8661 8662 genlmsg_end(msg, hdr); 8663 8664 return genlmsg_reply(msg, info); 8665 8666 nla_put_failure: 8667 err = -ENOBUFS; 8668 free_msg: 8669 nlmsg_free(msg); 8670 return err; 8671 } 8672 8673 static int nl80211_register_beacons(struct sk_buff *skb, struct genl_info *info) 8674 { 8675 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 8676 struct cfg80211_beacon_registration *reg, *nreg; 8677 int rv; 8678 8679 if (!(rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS)) 8680 return -EOPNOTSUPP; 8681 8682 nreg = kzalloc(sizeof(*nreg), GFP_KERNEL); 8683 if (!nreg) 8684 return -ENOMEM; 8685 8686 /* First, check if already registered. */ 8687 spin_lock_bh(&rdev->beacon_registrations_lock); 8688 list_for_each_entry(reg, &rdev->beacon_registrations, list) { 8689 if (reg->nlportid == info->snd_portid) { 8690 rv = -EALREADY; 8691 goto out_err; 8692 } 8693 } 8694 /* Add it to the list */ 8695 nreg->nlportid = info->snd_portid; 8696 list_add(&nreg->list, &rdev->beacon_registrations); 8697 8698 spin_unlock_bh(&rdev->beacon_registrations_lock); 8699 8700 return 0; 8701 out_err: 8702 spin_unlock_bh(&rdev->beacon_registrations_lock); 8703 kfree(nreg); 8704 return rv; 8705 } 8706 8707 static int nl80211_start_p2p_device(struct sk_buff *skb, struct genl_info *info) 8708 { 8709 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 8710 struct wireless_dev *wdev = info->user_ptr[1]; 8711 int err; 8712 8713 if (!rdev->ops->start_p2p_device) 8714 return -EOPNOTSUPP; 8715 8716 if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE) 8717 return -EOPNOTSUPP; 8718 8719 if (wdev->p2p_started) 8720 return 0; 8721 8722 err = cfg80211_can_add_interface(rdev, wdev->iftype); 8723 if (err) 8724 return err; 8725 8726 err = rdev_start_p2p_device(rdev, wdev); 8727 if (err) 8728 return err; 8729 8730 wdev->p2p_started = true; 8731 rdev->opencount++; 8732 8733 return 0; 8734 } 8735 8736 static int nl80211_stop_p2p_device(struct sk_buff *skb, struct genl_info *info) 8737 { 8738 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 8739 struct wireless_dev *wdev = info->user_ptr[1]; 8740 8741 if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE) 8742 return -EOPNOTSUPP; 8743 8744 if (!rdev->ops->stop_p2p_device) 8745 return -EOPNOTSUPP; 8746 8747 cfg80211_stop_p2p_device(rdev, wdev); 8748 8749 return 0; 8750 } 8751 8752 static int nl80211_get_protocol_features(struct sk_buff *skb, 8753 struct genl_info *info) 8754 { 8755 void *hdr; 8756 struct sk_buff *msg; 8757 8758 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 8759 if (!msg) 8760 return -ENOMEM; 8761 8762 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0, 8763 NL80211_CMD_GET_PROTOCOL_FEATURES); 8764 if (!hdr) 8765 goto nla_put_failure; 8766 8767 if (nla_put_u32(msg, NL80211_ATTR_PROTOCOL_FEATURES, 8768 NL80211_PROTOCOL_FEATURE_SPLIT_WIPHY_DUMP)) 8769 goto nla_put_failure; 8770 8771 genlmsg_end(msg, hdr); 8772 return genlmsg_reply(msg, info); 8773 8774 nla_put_failure: 8775 kfree_skb(msg); 8776 return -ENOBUFS; 8777 } 8778 8779 static int nl80211_update_ft_ies(struct sk_buff *skb, struct genl_info *info) 8780 { 8781 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 8782 struct cfg80211_update_ft_ies_params ft_params; 8783 struct net_device *dev = info->user_ptr[1]; 8784 8785 if (!rdev->ops->update_ft_ies) 8786 return -EOPNOTSUPP; 8787 8788 if (!info->attrs[NL80211_ATTR_MDID] || 8789 !is_valid_ie_attr(info->attrs[NL80211_ATTR_IE])) 8790 return -EINVAL; 8791 8792 memset(&ft_params, 0, sizeof(ft_params)); 8793 ft_params.md = nla_get_u16(info->attrs[NL80211_ATTR_MDID]); 8794 ft_params.ie = nla_data(info->attrs[NL80211_ATTR_IE]); 8795 ft_params.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); 8796 8797 return rdev_update_ft_ies(rdev, dev, &ft_params); 8798 } 8799 8800 static int nl80211_crit_protocol_start(struct sk_buff *skb, 8801 struct genl_info *info) 8802 { 8803 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 8804 struct wireless_dev *wdev = info->user_ptr[1]; 8805 enum nl80211_crit_proto_id proto = NL80211_CRIT_PROTO_UNSPEC; 8806 u16 duration; 8807 int ret; 8808 8809 if (!rdev->ops->crit_proto_start) 8810 return -EOPNOTSUPP; 8811 8812 if (WARN_ON(!rdev->ops->crit_proto_stop)) 8813 return -EINVAL; 8814 8815 if (rdev->crit_proto_nlportid) 8816 return -EBUSY; 8817 8818 /* determine protocol if provided */ 8819 if (info->attrs[NL80211_ATTR_CRIT_PROT_ID]) 8820 proto = nla_get_u16(info->attrs[NL80211_ATTR_CRIT_PROT_ID]); 8821 8822 if (proto >= NUM_NL80211_CRIT_PROTO) 8823 return -EINVAL; 8824 8825 /* timeout must be provided */ 8826 if (!info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION]) 8827 return -EINVAL; 8828 8829 duration = 8830 nla_get_u16(info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION]); 8831 8832 if (duration > NL80211_CRIT_PROTO_MAX_DURATION) 8833 return -ERANGE; 8834 8835 ret = rdev_crit_proto_start(rdev, wdev, proto, duration); 8836 if (!ret) 8837 rdev->crit_proto_nlportid = info->snd_portid; 8838 8839 return ret; 8840 } 8841 8842 static int nl80211_crit_protocol_stop(struct sk_buff *skb, 8843 struct genl_info *info) 8844 { 8845 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 8846 struct wireless_dev *wdev = info->user_ptr[1]; 8847 8848 if (!rdev->ops->crit_proto_stop) 8849 return -EOPNOTSUPP; 8850 8851 if (rdev->crit_proto_nlportid) { 8852 rdev->crit_proto_nlportid = 0; 8853 rdev_crit_proto_stop(rdev, wdev); 8854 } 8855 return 0; 8856 } 8857 8858 #define NL80211_FLAG_NEED_WIPHY 0x01 8859 #define NL80211_FLAG_NEED_NETDEV 0x02 8860 #define NL80211_FLAG_NEED_RTNL 0x04 8861 #define NL80211_FLAG_CHECK_NETDEV_UP 0x08 8862 #define NL80211_FLAG_NEED_NETDEV_UP (NL80211_FLAG_NEED_NETDEV |\ 8863 NL80211_FLAG_CHECK_NETDEV_UP) 8864 #define NL80211_FLAG_NEED_WDEV 0x10 8865 /* If a netdev is associated, it must be UP, P2P must be started */ 8866 #define NL80211_FLAG_NEED_WDEV_UP (NL80211_FLAG_NEED_WDEV |\ 8867 NL80211_FLAG_CHECK_NETDEV_UP) 8868 8869 static int nl80211_pre_doit(const struct genl_ops *ops, struct sk_buff *skb, 8870 struct genl_info *info) 8871 { 8872 struct cfg80211_registered_device *rdev; 8873 struct wireless_dev *wdev; 8874 struct net_device *dev; 8875 bool rtnl = ops->internal_flags & NL80211_FLAG_NEED_RTNL; 8876 8877 if (rtnl) 8878 rtnl_lock(); 8879 8880 if (ops->internal_flags & NL80211_FLAG_NEED_WIPHY) { 8881 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info); 8882 if (IS_ERR(rdev)) { 8883 if (rtnl) 8884 rtnl_unlock(); 8885 return PTR_ERR(rdev); 8886 } 8887 info->user_ptr[0] = rdev; 8888 } else if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV || 8889 ops->internal_flags & NL80211_FLAG_NEED_WDEV) { 8890 ASSERT_RTNL(); 8891 8892 wdev = __cfg80211_wdev_from_attrs(genl_info_net(info), 8893 info->attrs); 8894 if (IS_ERR(wdev)) { 8895 if (rtnl) 8896 rtnl_unlock(); 8897 return PTR_ERR(wdev); 8898 } 8899 8900 dev = wdev->netdev; 8901 rdev = wiphy_to_dev(wdev->wiphy); 8902 8903 if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV) { 8904 if (!dev) { 8905 if (rtnl) 8906 rtnl_unlock(); 8907 return -EINVAL; 8908 } 8909 8910 info->user_ptr[1] = dev; 8911 } else { 8912 info->user_ptr[1] = wdev; 8913 } 8914 8915 if (dev) { 8916 if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP && 8917 !netif_running(dev)) { 8918 if (rtnl) 8919 rtnl_unlock(); 8920 return -ENETDOWN; 8921 } 8922 8923 dev_hold(dev); 8924 } else if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP) { 8925 if (!wdev->p2p_started) { 8926 if (rtnl) 8927 rtnl_unlock(); 8928 return -ENETDOWN; 8929 } 8930 } 8931 8932 info->user_ptr[0] = rdev; 8933 } 8934 8935 return 0; 8936 } 8937 8938 static void nl80211_post_doit(const struct genl_ops *ops, struct sk_buff *skb, 8939 struct genl_info *info) 8940 { 8941 if (info->user_ptr[1]) { 8942 if (ops->internal_flags & NL80211_FLAG_NEED_WDEV) { 8943 struct wireless_dev *wdev = info->user_ptr[1]; 8944 8945 if (wdev->netdev) 8946 dev_put(wdev->netdev); 8947 } else { 8948 dev_put(info->user_ptr[1]); 8949 } 8950 } 8951 if (ops->internal_flags & NL80211_FLAG_NEED_RTNL) 8952 rtnl_unlock(); 8953 } 8954 8955 static const struct genl_ops nl80211_ops[] = { 8956 { 8957 .cmd = NL80211_CMD_GET_WIPHY, 8958 .doit = nl80211_get_wiphy, 8959 .dumpit = nl80211_dump_wiphy, 8960 .done = nl80211_dump_wiphy_done, 8961 .policy = nl80211_policy, 8962 /* can be retrieved by unprivileged users */ 8963 .internal_flags = NL80211_FLAG_NEED_WIPHY | 8964 NL80211_FLAG_NEED_RTNL, 8965 }, 8966 { 8967 .cmd = NL80211_CMD_SET_WIPHY, 8968 .doit = nl80211_set_wiphy, 8969 .policy = nl80211_policy, 8970 .flags = GENL_ADMIN_PERM, 8971 .internal_flags = NL80211_FLAG_NEED_RTNL, 8972 }, 8973 { 8974 .cmd = NL80211_CMD_GET_INTERFACE, 8975 .doit = nl80211_get_interface, 8976 .dumpit = nl80211_dump_interface, 8977 .policy = nl80211_policy, 8978 /* can be retrieved by unprivileged users */ 8979 .internal_flags = NL80211_FLAG_NEED_WDEV | 8980 NL80211_FLAG_NEED_RTNL, 8981 }, 8982 { 8983 .cmd = NL80211_CMD_SET_INTERFACE, 8984 .doit = nl80211_set_interface, 8985 .policy = nl80211_policy, 8986 .flags = GENL_ADMIN_PERM, 8987 .internal_flags = NL80211_FLAG_NEED_NETDEV | 8988 NL80211_FLAG_NEED_RTNL, 8989 }, 8990 { 8991 .cmd = NL80211_CMD_NEW_INTERFACE, 8992 .doit = nl80211_new_interface, 8993 .policy = nl80211_policy, 8994 .flags = GENL_ADMIN_PERM, 8995 .internal_flags = NL80211_FLAG_NEED_WIPHY | 8996 NL80211_FLAG_NEED_RTNL, 8997 }, 8998 { 8999 .cmd = NL80211_CMD_DEL_INTERFACE, 9000 .doit = nl80211_del_interface, 9001 .policy = nl80211_policy, 9002 .flags = GENL_ADMIN_PERM, 9003 .internal_flags = NL80211_FLAG_NEED_WDEV | 9004 NL80211_FLAG_NEED_RTNL, 9005 }, 9006 { 9007 .cmd = NL80211_CMD_GET_KEY, 9008 .doit = nl80211_get_key, 9009 .policy = nl80211_policy, 9010 .flags = GENL_ADMIN_PERM, 9011 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 9012 NL80211_FLAG_NEED_RTNL, 9013 }, 9014 { 9015 .cmd = NL80211_CMD_SET_KEY, 9016 .doit = nl80211_set_key, 9017 .policy = nl80211_policy, 9018 .flags = GENL_ADMIN_PERM, 9019 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 9020 NL80211_FLAG_NEED_RTNL, 9021 }, 9022 { 9023 .cmd = NL80211_CMD_NEW_KEY, 9024 .doit = nl80211_new_key, 9025 .policy = nl80211_policy, 9026 .flags = GENL_ADMIN_PERM, 9027 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 9028 NL80211_FLAG_NEED_RTNL, 9029 }, 9030 { 9031 .cmd = NL80211_CMD_DEL_KEY, 9032 .doit = nl80211_del_key, 9033 .policy = nl80211_policy, 9034 .flags = GENL_ADMIN_PERM, 9035 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 9036 NL80211_FLAG_NEED_RTNL, 9037 }, 9038 { 9039 .cmd = NL80211_CMD_SET_BEACON, 9040 .policy = nl80211_policy, 9041 .flags = GENL_ADMIN_PERM, 9042 .doit = nl80211_set_beacon, 9043 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 9044 NL80211_FLAG_NEED_RTNL, 9045 }, 9046 { 9047 .cmd = NL80211_CMD_START_AP, 9048 .policy = nl80211_policy, 9049 .flags = GENL_ADMIN_PERM, 9050 .doit = nl80211_start_ap, 9051 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 9052 NL80211_FLAG_NEED_RTNL, 9053 }, 9054 { 9055 .cmd = NL80211_CMD_STOP_AP, 9056 .policy = nl80211_policy, 9057 .flags = GENL_ADMIN_PERM, 9058 .doit = nl80211_stop_ap, 9059 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 9060 NL80211_FLAG_NEED_RTNL, 9061 }, 9062 { 9063 .cmd = NL80211_CMD_GET_STATION, 9064 .doit = nl80211_get_station, 9065 .dumpit = nl80211_dump_station, 9066 .policy = nl80211_policy, 9067 .internal_flags = NL80211_FLAG_NEED_NETDEV | 9068 NL80211_FLAG_NEED_RTNL, 9069 }, 9070 { 9071 .cmd = NL80211_CMD_SET_STATION, 9072 .doit = nl80211_set_station, 9073 .policy = nl80211_policy, 9074 .flags = GENL_ADMIN_PERM, 9075 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 9076 NL80211_FLAG_NEED_RTNL, 9077 }, 9078 { 9079 .cmd = NL80211_CMD_NEW_STATION, 9080 .doit = nl80211_new_station, 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_DEL_STATION, 9088 .doit = nl80211_del_station, 9089 .policy = nl80211_policy, 9090 .flags = GENL_ADMIN_PERM, 9091 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 9092 NL80211_FLAG_NEED_RTNL, 9093 }, 9094 { 9095 .cmd = NL80211_CMD_GET_MPATH, 9096 .doit = nl80211_get_mpath, 9097 .dumpit = nl80211_dump_mpath, 9098 .policy = nl80211_policy, 9099 .flags = GENL_ADMIN_PERM, 9100 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 9101 NL80211_FLAG_NEED_RTNL, 9102 }, 9103 { 9104 .cmd = NL80211_CMD_SET_MPATH, 9105 .doit = nl80211_set_mpath, 9106 .policy = nl80211_policy, 9107 .flags = GENL_ADMIN_PERM, 9108 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 9109 NL80211_FLAG_NEED_RTNL, 9110 }, 9111 { 9112 .cmd = NL80211_CMD_NEW_MPATH, 9113 .doit = nl80211_new_mpath, 9114 .policy = nl80211_policy, 9115 .flags = GENL_ADMIN_PERM, 9116 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 9117 NL80211_FLAG_NEED_RTNL, 9118 }, 9119 { 9120 .cmd = NL80211_CMD_DEL_MPATH, 9121 .doit = nl80211_del_mpath, 9122 .policy = nl80211_policy, 9123 .flags = GENL_ADMIN_PERM, 9124 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 9125 NL80211_FLAG_NEED_RTNL, 9126 }, 9127 { 9128 .cmd = NL80211_CMD_SET_BSS, 9129 .doit = nl80211_set_bss, 9130 .policy = nl80211_policy, 9131 .flags = GENL_ADMIN_PERM, 9132 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 9133 NL80211_FLAG_NEED_RTNL, 9134 }, 9135 { 9136 .cmd = NL80211_CMD_GET_REG, 9137 .doit = nl80211_get_reg, 9138 .policy = nl80211_policy, 9139 .internal_flags = NL80211_FLAG_NEED_RTNL, 9140 /* can be retrieved by unprivileged users */ 9141 }, 9142 { 9143 .cmd = NL80211_CMD_SET_REG, 9144 .doit = nl80211_set_reg, 9145 .policy = nl80211_policy, 9146 .flags = GENL_ADMIN_PERM, 9147 .internal_flags = NL80211_FLAG_NEED_RTNL, 9148 }, 9149 { 9150 .cmd = NL80211_CMD_REQ_SET_REG, 9151 .doit = nl80211_req_set_reg, 9152 .policy = nl80211_policy, 9153 .flags = GENL_ADMIN_PERM, 9154 }, 9155 { 9156 .cmd = NL80211_CMD_GET_MESH_CONFIG, 9157 .doit = nl80211_get_mesh_config, 9158 .policy = nl80211_policy, 9159 /* can be retrieved by unprivileged users */ 9160 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 9161 NL80211_FLAG_NEED_RTNL, 9162 }, 9163 { 9164 .cmd = NL80211_CMD_SET_MESH_CONFIG, 9165 .doit = nl80211_update_mesh_config, 9166 .policy = nl80211_policy, 9167 .flags = GENL_ADMIN_PERM, 9168 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 9169 NL80211_FLAG_NEED_RTNL, 9170 }, 9171 { 9172 .cmd = NL80211_CMD_TRIGGER_SCAN, 9173 .doit = nl80211_trigger_scan, 9174 .policy = nl80211_policy, 9175 .flags = GENL_ADMIN_PERM, 9176 .internal_flags = NL80211_FLAG_NEED_WDEV_UP | 9177 NL80211_FLAG_NEED_RTNL, 9178 }, 9179 { 9180 .cmd = NL80211_CMD_GET_SCAN, 9181 .policy = nl80211_policy, 9182 .dumpit = nl80211_dump_scan, 9183 }, 9184 { 9185 .cmd = NL80211_CMD_START_SCHED_SCAN, 9186 .doit = nl80211_start_sched_scan, 9187 .policy = nl80211_policy, 9188 .flags = GENL_ADMIN_PERM, 9189 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 9190 NL80211_FLAG_NEED_RTNL, 9191 }, 9192 { 9193 .cmd = NL80211_CMD_STOP_SCHED_SCAN, 9194 .doit = nl80211_stop_sched_scan, 9195 .policy = nl80211_policy, 9196 .flags = GENL_ADMIN_PERM, 9197 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 9198 NL80211_FLAG_NEED_RTNL, 9199 }, 9200 { 9201 .cmd = NL80211_CMD_AUTHENTICATE, 9202 .doit = nl80211_authenticate, 9203 .policy = nl80211_policy, 9204 .flags = GENL_ADMIN_PERM, 9205 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 9206 NL80211_FLAG_NEED_RTNL, 9207 }, 9208 { 9209 .cmd = NL80211_CMD_ASSOCIATE, 9210 .doit = nl80211_associate, 9211 .policy = nl80211_policy, 9212 .flags = GENL_ADMIN_PERM, 9213 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 9214 NL80211_FLAG_NEED_RTNL, 9215 }, 9216 { 9217 .cmd = NL80211_CMD_DEAUTHENTICATE, 9218 .doit = nl80211_deauthenticate, 9219 .policy = nl80211_policy, 9220 .flags = GENL_ADMIN_PERM, 9221 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 9222 NL80211_FLAG_NEED_RTNL, 9223 }, 9224 { 9225 .cmd = NL80211_CMD_DISASSOCIATE, 9226 .doit = nl80211_disassociate, 9227 .policy = nl80211_policy, 9228 .flags = GENL_ADMIN_PERM, 9229 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 9230 NL80211_FLAG_NEED_RTNL, 9231 }, 9232 { 9233 .cmd = NL80211_CMD_JOIN_IBSS, 9234 .doit = nl80211_join_ibss, 9235 .policy = nl80211_policy, 9236 .flags = GENL_ADMIN_PERM, 9237 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 9238 NL80211_FLAG_NEED_RTNL, 9239 }, 9240 { 9241 .cmd = NL80211_CMD_LEAVE_IBSS, 9242 .doit = nl80211_leave_ibss, 9243 .policy = nl80211_policy, 9244 .flags = GENL_ADMIN_PERM, 9245 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 9246 NL80211_FLAG_NEED_RTNL, 9247 }, 9248 #ifdef CONFIG_NL80211_TESTMODE 9249 { 9250 .cmd = NL80211_CMD_TESTMODE, 9251 .doit = nl80211_testmode_do, 9252 .dumpit = nl80211_testmode_dump, 9253 .policy = nl80211_policy, 9254 .flags = GENL_ADMIN_PERM, 9255 .internal_flags = NL80211_FLAG_NEED_WIPHY | 9256 NL80211_FLAG_NEED_RTNL, 9257 }, 9258 #endif 9259 { 9260 .cmd = NL80211_CMD_CONNECT, 9261 .doit = nl80211_connect, 9262 .policy = nl80211_policy, 9263 .flags = GENL_ADMIN_PERM, 9264 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 9265 NL80211_FLAG_NEED_RTNL, 9266 }, 9267 { 9268 .cmd = NL80211_CMD_DISCONNECT, 9269 .doit = nl80211_disconnect, 9270 .policy = nl80211_policy, 9271 .flags = GENL_ADMIN_PERM, 9272 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 9273 NL80211_FLAG_NEED_RTNL, 9274 }, 9275 { 9276 .cmd = NL80211_CMD_SET_WIPHY_NETNS, 9277 .doit = nl80211_wiphy_netns, 9278 .policy = nl80211_policy, 9279 .flags = GENL_ADMIN_PERM, 9280 .internal_flags = NL80211_FLAG_NEED_WIPHY | 9281 NL80211_FLAG_NEED_RTNL, 9282 }, 9283 { 9284 .cmd = NL80211_CMD_GET_SURVEY, 9285 .policy = nl80211_policy, 9286 .dumpit = nl80211_dump_survey, 9287 }, 9288 { 9289 .cmd = NL80211_CMD_SET_PMKSA, 9290 .doit = nl80211_setdel_pmksa, 9291 .policy = nl80211_policy, 9292 .flags = GENL_ADMIN_PERM, 9293 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 9294 NL80211_FLAG_NEED_RTNL, 9295 }, 9296 { 9297 .cmd = NL80211_CMD_DEL_PMKSA, 9298 .doit = nl80211_setdel_pmksa, 9299 .policy = nl80211_policy, 9300 .flags = GENL_ADMIN_PERM, 9301 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 9302 NL80211_FLAG_NEED_RTNL, 9303 }, 9304 { 9305 .cmd = NL80211_CMD_FLUSH_PMKSA, 9306 .doit = nl80211_flush_pmksa, 9307 .policy = nl80211_policy, 9308 .flags = GENL_ADMIN_PERM, 9309 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 9310 NL80211_FLAG_NEED_RTNL, 9311 }, 9312 { 9313 .cmd = NL80211_CMD_REMAIN_ON_CHANNEL, 9314 .doit = nl80211_remain_on_channel, 9315 .policy = nl80211_policy, 9316 .flags = GENL_ADMIN_PERM, 9317 .internal_flags = NL80211_FLAG_NEED_WDEV_UP | 9318 NL80211_FLAG_NEED_RTNL, 9319 }, 9320 { 9321 .cmd = NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL, 9322 .doit = nl80211_cancel_remain_on_channel, 9323 .policy = nl80211_policy, 9324 .flags = GENL_ADMIN_PERM, 9325 .internal_flags = NL80211_FLAG_NEED_WDEV_UP | 9326 NL80211_FLAG_NEED_RTNL, 9327 }, 9328 { 9329 .cmd = NL80211_CMD_SET_TX_BITRATE_MASK, 9330 .doit = nl80211_set_tx_bitrate_mask, 9331 .policy = nl80211_policy, 9332 .flags = GENL_ADMIN_PERM, 9333 .internal_flags = NL80211_FLAG_NEED_NETDEV | 9334 NL80211_FLAG_NEED_RTNL, 9335 }, 9336 { 9337 .cmd = NL80211_CMD_REGISTER_FRAME, 9338 .doit = nl80211_register_mgmt, 9339 .policy = nl80211_policy, 9340 .flags = GENL_ADMIN_PERM, 9341 .internal_flags = NL80211_FLAG_NEED_WDEV | 9342 NL80211_FLAG_NEED_RTNL, 9343 }, 9344 { 9345 .cmd = NL80211_CMD_FRAME, 9346 .doit = nl80211_tx_mgmt, 9347 .policy = nl80211_policy, 9348 .flags = GENL_ADMIN_PERM, 9349 .internal_flags = NL80211_FLAG_NEED_WDEV_UP | 9350 NL80211_FLAG_NEED_RTNL, 9351 }, 9352 { 9353 .cmd = NL80211_CMD_FRAME_WAIT_CANCEL, 9354 .doit = nl80211_tx_mgmt_cancel_wait, 9355 .policy = nl80211_policy, 9356 .flags = GENL_ADMIN_PERM, 9357 .internal_flags = NL80211_FLAG_NEED_WDEV_UP | 9358 NL80211_FLAG_NEED_RTNL, 9359 }, 9360 { 9361 .cmd = NL80211_CMD_SET_POWER_SAVE, 9362 .doit = nl80211_set_power_save, 9363 .policy = nl80211_policy, 9364 .flags = GENL_ADMIN_PERM, 9365 .internal_flags = NL80211_FLAG_NEED_NETDEV | 9366 NL80211_FLAG_NEED_RTNL, 9367 }, 9368 { 9369 .cmd = NL80211_CMD_GET_POWER_SAVE, 9370 .doit = nl80211_get_power_save, 9371 .policy = nl80211_policy, 9372 /* can be retrieved by unprivileged users */ 9373 .internal_flags = NL80211_FLAG_NEED_NETDEV | 9374 NL80211_FLAG_NEED_RTNL, 9375 }, 9376 { 9377 .cmd = NL80211_CMD_SET_CQM, 9378 .doit = nl80211_set_cqm, 9379 .policy = nl80211_policy, 9380 .flags = GENL_ADMIN_PERM, 9381 .internal_flags = NL80211_FLAG_NEED_NETDEV | 9382 NL80211_FLAG_NEED_RTNL, 9383 }, 9384 { 9385 .cmd = NL80211_CMD_SET_CHANNEL, 9386 .doit = nl80211_set_channel, 9387 .policy = nl80211_policy, 9388 .flags = GENL_ADMIN_PERM, 9389 .internal_flags = NL80211_FLAG_NEED_NETDEV | 9390 NL80211_FLAG_NEED_RTNL, 9391 }, 9392 { 9393 .cmd = NL80211_CMD_SET_WDS_PEER, 9394 .doit = nl80211_set_wds_peer, 9395 .policy = nl80211_policy, 9396 .flags = GENL_ADMIN_PERM, 9397 .internal_flags = NL80211_FLAG_NEED_NETDEV | 9398 NL80211_FLAG_NEED_RTNL, 9399 }, 9400 { 9401 .cmd = NL80211_CMD_JOIN_MESH, 9402 .doit = nl80211_join_mesh, 9403 .policy = nl80211_policy, 9404 .flags = GENL_ADMIN_PERM, 9405 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 9406 NL80211_FLAG_NEED_RTNL, 9407 }, 9408 { 9409 .cmd = NL80211_CMD_LEAVE_MESH, 9410 .doit = nl80211_leave_mesh, 9411 .policy = nl80211_policy, 9412 .flags = GENL_ADMIN_PERM, 9413 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 9414 NL80211_FLAG_NEED_RTNL, 9415 }, 9416 #ifdef CONFIG_PM 9417 { 9418 .cmd = NL80211_CMD_GET_WOWLAN, 9419 .doit = nl80211_get_wowlan, 9420 .policy = nl80211_policy, 9421 /* can be retrieved by unprivileged users */ 9422 .internal_flags = NL80211_FLAG_NEED_WIPHY | 9423 NL80211_FLAG_NEED_RTNL, 9424 }, 9425 { 9426 .cmd = NL80211_CMD_SET_WOWLAN, 9427 .doit = nl80211_set_wowlan, 9428 .policy = nl80211_policy, 9429 .flags = GENL_ADMIN_PERM, 9430 .internal_flags = NL80211_FLAG_NEED_WIPHY | 9431 NL80211_FLAG_NEED_RTNL, 9432 }, 9433 #endif 9434 { 9435 .cmd = NL80211_CMD_SET_REKEY_OFFLOAD, 9436 .doit = nl80211_set_rekey_data, 9437 .policy = nl80211_policy, 9438 .flags = GENL_ADMIN_PERM, 9439 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 9440 NL80211_FLAG_NEED_RTNL, 9441 }, 9442 { 9443 .cmd = NL80211_CMD_TDLS_MGMT, 9444 .doit = nl80211_tdls_mgmt, 9445 .policy = nl80211_policy, 9446 .flags = GENL_ADMIN_PERM, 9447 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 9448 NL80211_FLAG_NEED_RTNL, 9449 }, 9450 { 9451 .cmd = NL80211_CMD_TDLS_OPER, 9452 .doit = nl80211_tdls_oper, 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_UNEXPECTED_FRAME, 9460 .doit = nl80211_register_unexpected_frame, 9461 .policy = nl80211_policy, 9462 .flags = GENL_ADMIN_PERM, 9463 .internal_flags = NL80211_FLAG_NEED_NETDEV | 9464 NL80211_FLAG_NEED_RTNL, 9465 }, 9466 { 9467 .cmd = NL80211_CMD_PROBE_CLIENT, 9468 .doit = nl80211_probe_client, 9469 .policy = nl80211_policy, 9470 .flags = GENL_ADMIN_PERM, 9471 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 9472 NL80211_FLAG_NEED_RTNL, 9473 }, 9474 { 9475 .cmd = NL80211_CMD_REGISTER_BEACONS, 9476 .doit = nl80211_register_beacons, 9477 .policy = nl80211_policy, 9478 .flags = GENL_ADMIN_PERM, 9479 .internal_flags = NL80211_FLAG_NEED_WIPHY | 9480 NL80211_FLAG_NEED_RTNL, 9481 }, 9482 { 9483 .cmd = NL80211_CMD_SET_NOACK_MAP, 9484 .doit = nl80211_set_noack_map, 9485 .policy = nl80211_policy, 9486 .flags = GENL_ADMIN_PERM, 9487 .internal_flags = NL80211_FLAG_NEED_NETDEV | 9488 NL80211_FLAG_NEED_RTNL, 9489 }, 9490 { 9491 .cmd = NL80211_CMD_START_P2P_DEVICE, 9492 .doit = nl80211_start_p2p_device, 9493 .policy = nl80211_policy, 9494 .flags = GENL_ADMIN_PERM, 9495 .internal_flags = NL80211_FLAG_NEED_WDEV | 9496 NL80211_FLAG_NEED_RTNL, 9497 }, 9498 { 9499 .cmd = NL80211_CMD_STOP_P2P_DEVICE, 9500 .doit = nl80211_stop_p2p_device, 9501 .policy = nl80211_policy, 9502 .flags = GENL_ADMIN_PERM, 9503 .internal_flags = NL80211_FLAG_NEED_WDEV_UP | 9504 NL80211_FLAG_NEED_RTNL, 9505 }, 9506 { 9507 .cmd = NL80211_CMD_SET_MCAST_RATE, 9508 .doit = nl80211_set_mcast_rate, 9509 .policy = nl80211_policy, 9510 .flags = GENL_ADMIN_PERM, 9511 .internal_flags = NL80211_FLAG_NEED_NETDEV | 9512 NL80211_FLAG_NEED_RTNL, 9513 }, 9514 { 9515 .cmd = NL80211_CMD_SET_MAC_ACL, 9516 .doit = nl80211_set_mac_acl, 9517 .policy = nl80211_policy, 9518 .flags = GENL_ADMIN_PERM, 9519 .internal_flags = NL80211_FLAG_NEED_NETDEV | 9520 NL80211_FLAG_NEED_RTNL, 9521 }, 9522 { 9523 .cmd = NL80211_CMD_RADAR_DETECT, 9524 .doit = nl80211_start_radar_detection, 9525 .policy = nl80211_policy, 9526 .flags = GENL_ADMIN_PERM, 9527 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 9528 NL80211_FLAG_NEED_RTNL, 9529 }, 9530 { 9531 .cmd = NL80211_CMD_GET_PROTOCOL_FEATURES, 9532 .doit = nl80211_get_protocol_features, 9533 .policy = nl80211_policy, 9534 }, 9535 { 9536 .cmd = NL80211_CMD_UPDATE_FT_IES, 9537 .doit = nl80211_update_ft_ies, 9538 .policy = nl80211_policy, 9539 .flags = GENL_ADMIN_PERM, 9540 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 9541 NL80211_FLAG_NEED_RTNL, 9542 }, 9543 { 9544 .cmd = NL80211_CMD_CRIT_PROTOCOL_START, 9545 .doit = nl80211_crit_protocol_start, 9546 .policy = nl80211_policy, 9547 .flags = GENL_ADMIN_PERM, 9548 .internal_flags = NL80211_FLAG_NEED_WDEV_UP | 9549 NL80211_FLAG_NEED_RTNL, 9550 }, 9551 { 9552 .cmd = NL80211_CMD_CRIT_PROTOCOL_STOP, 9553 .doit = nl80211_crit_protocol_stop, 9554 .policy = nl80211_policy, 9555 .flags = GENL_ADMIN_PERM, 9556 .internal_flags = NL80211_FLAG_NEED_WDEV_UP | 9557 NL80211_FLAG_NEED_RTNL, 9558 }, 9559 { 9560 .cmd = NL80211_CMD_GET_COALESCE, 9561 .doit = nl80211_get_coalesce, 9562 .policy = nl80211_policy, 9563 .internal_flags = NL80211_FLAG_NEED_WIPHY | 9564 NL80211_FLAG_NEED_RTNL, 9565 }, 9566 { 9567 .cmd = NL80211_CMD_SET_COALESCE, 9568 .doit = nl80211_set_coalesce, 9569 .policy = nl80211_policy, 9570 .flags = GENL_ADMIN_PERM, 9571 .internal_flags = NL80211_FLAG_NEED_WIPHY | 9572 NL80211_FLAG_NEED_RTNL, 9573 }, 9574 { 9575 .cmd = NL80211_CMD_CHANNEL_SWITCH, 9576 .doit = nl80211_channel_switch, 9577 .policy = nl80211_policy, 9578 .flags = GENL_ADMIN_PERM, 9579 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 9580 NL80211_FLAG_NEED_RTNL, 9581 }, 9582 }; 9583 9584 /* notification functions */ 9585 9586 void nl80211_notify_dev_rename(struct cfg80211_registered_device *rdev) 9587 { 9588 struct sk_buff *msg; 9589 struct nl80211_dump_wiphy_state state = {}; 9590 9591 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 9592 if (!msg) 9593 return; 9594 9595 if (nl80211_send_wiphy(rdev, msg, 0, 0, 0, &state) < 0) { 9596 nlmsg_free(msg); 9597 return; 9598 } 9599 9600 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 9601 NL80211_MCGRP_CONFIG, GFP_KERNEL); 9602 } 9603 9604 static int nl80211_add_scan_req(struct sk_buff *msg, 9605 struct cfg80211_registered_device *rdev) 9606 { 9607 struct cfg80211_scan_request *req = rdev->scan_req; 9608 struct nlattr *nest; 9609 int i; 9610 9611 if (WARN_ON(!req)) 9612 return 0; 9613 9614 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_SSIDS); 9615 if (!nest) 9616 goto nla_put_failure; 9617 for (i = 0; i < req->n_ssids; i++) { 9618 if (nla_put(msg, i, req->ssids[i].ssid_len, req->ssids[i].ssid)) 9619 goto nla_put_failure; 9620 } 9621 nla_nest_end(msg, nest); 9622 9623 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES); 9624 if (!nest) 9625 goto nla_put_failure; 9626 for (i = 0; i < req->n_channels; i++) { 9627 if (nla_put_u32(msg, i, req->channels[i]->center_freq)) 9628 goto nla_put_failure; 9629 } 9630 nla_nest_end(msg, nest); 9631 9632 if (req->ie && 9633 nla_put(msg, NL80211_ATTR_IE, req->ie_len, req->ie)) 9634 goto nla_put_failure; 9635 9636 if (req->flags) 9637 nla_put_u32(msg, NL80211_ATTR_SCAN_FLAGS, req->flags); 9638 9639 return 0; 9640 nla_put_failure: 9641 return -ENOBUFS; 9642 } 9643 9644 static int nl80211_send_scan_msg(struct sk_buff *msg, 9645 struct cfg80211_registered_device *rdev, 9646 struct wireless_dev *wdev, 9647 u32 portid, u32 seq, int flags, 9648 u32 cmd) 9649 { 9650 void *hdr; 9651 9652 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd); 9653 if (!hdr) 9654 return -1; 9655 9656 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 9657 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX, 9658 wdev->netdev->ifindex)) || 9659 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev))) 9660 goto nla_put_failure; 9661 9662 /* ignore errors and send incomplete event anyway */ 9663 nl80211_add_scan_req(msg, rdev); 9664 9665 return genlmsg_end(msg, hdr); 9666 9667 nla_put_failure: 9668 genlmsg_cancel(msg, hdr); 9669 return -EMSGSIZE; 9670 } 9671 9672 static int 9673 nl80211_send_sched_scan_msg(struct sk_buff *msg, 9674 struct cfg80211_registered_device *rdev, 9675 struct net_device *netdev, 9676 u32 portid, u32 seq, int flags, u32 cmd) 9677 { 9678 void *hdr; 9679 9680 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd); 9681 if (!hdr) 9682 return -1; 9683 9684 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 9685 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex)) 9686 goto nla_put_failure; 9687 9688 return genlmsg_end(msg, hdr); 9689 9690 nla_put_failure: 9691 genlmsg_cancel(msg, hdr); 9692 return -EMSGSIZE; 9693 } 9694 9695 void nl80211_send_scan_start(struct cfg80211_registered_device *rdev, 9696 struct wireless_dev *wdev) 9697 { 9698 struct sk_buff *msg; 9699 9700 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 9701 if (!msg) 9702 return; 9703 9704 if (nl80211_send_scan_msg(msg, rdev, wdev, 0, 0, 0, 9705 NL80211_CMD_TRIGGER_SCAN) < 0) { 9706 nlmsg_free(msg); 9707 return; 9708 } 9709 9710 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 9711 NL80211_MCGRP_SCAN, GFP_KERNEL); 9712 } 9713 9714 void nl80211_send_scan_done(struct cfg80211_registered_device *rdev, 9715 struct wireless_dev *wdev) 9716 { 9717 struct sk_buff *msg; 9718 9719 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 9720 if (!msg) 9721 return; 9722 9723 if (nl80211_send_scan_msg(msg, rdev, wdev, 0, 0, 0, 9724 NL80211_CMD_NEW_SCAN_RESULTS) < 0) { 9725 nlmsg_free(msg); 9726 return; 9727 } 9728 9729 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 9730 NL80211_MCGRP_SCAN, GFP_KERNEL); 9731 } 9732 9733 void nl80211_send_scan_aborted(struct cfg80211_registered_device *rdev, 9734 struct wireless_dev *wdev) 9735 { 9736 struct sk_buff *msg; 9737 9738 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 9739 if (!msg) 9740 return; 9741 9742 if (nl80211_send_scan_msg(msg, rdev, wdev, 0, 0, 0, 9743 NL80211_CMD_SCAN_ABORTED) < 0) { 9744 nlmsg_free(msg); 9745 return; 9746 } 9747 9748 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 9749 NL80211_MCGRP_SCAN, GFP_KERNEL); 9750 } 9751 9752 void nl80211_send_sched_scan_results(struct cfg80211_registered_device *rdev, 9753 struct net_device *netdev) 9754 { 9755 struct sk_buff *msg; 9756 9757 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 9758 if (!msg) 9759 return; 9760 9761 if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0, 9762 NL80211_CMD_SCHED_SCAN_RESULTS) < 0) { 9763 nlmsg_free(msg); 9764 return; 9765 } 9766 9767 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 9768 NL80211_MCGRP_SCAN, GFP_KERNEL); 9769 } 9770 9771 void nl80211_send_sched_scan(struct cfg80211_registered_device *rdev, 9772 struct net_device *netdev, u32 cmd) 9773 { 9774 struct sk_buff *msg; 9775 9776 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 9777 if (!msg) 9778 return; 9779 9780 if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0, cmd) < 0) { 9781 nlmsg_free(msg); 9782 return; 9783 } 9784 9785 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 9786 NL80211_MCGRP_SCAN, GFP_KERNEL); 9787 } 9788 9789 /* 9790 * This can happen on global regulatory changes or device specific settings 9791 * based on custom world regulatory domains. 9792 */ 9793 void nl80211_send_reg_change_event(struct regulatory_request *request) 9794 { 9795 struct sk_buff *msg; 9796 void *hdr; 9797 9798 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 9799 if (!msg) 9800 return; 9801 9802 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_CHANGE); 9803 if (!hdr) { 9804 nlmsg_free(msg); 9805 return; 9806 } 9807 9808 /* Userspace can always count this one always being set */ 9809 if (nla_put_u8(msg, NL80211_ATTR_REG_INITIATOR, request->initiator)) 9810 goto nla_put_failure; 9811 9812 if (request->alpha2[0] == '0' && request->alpha2[1] == '0') { 9813 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE, 9814 NL80211_REGDOM_TYPE_WORLD)) 9815 goto nla_put_failure; 9816 } else if (request->alpha2[0] == '9' && request->alpha2[1] == '9') { 9817 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE, 9818 NL80211_REGDOM_TYPE_CUSTOM_WORLD)) 9819 goto nla_put_failure; 9820 } else if ((request->alpha2[0] == '9' && request->alpha2[1] == '8') || 9821 request->intersect) { 9822 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE, 9823 NL80211_REGDOM_TYPE_INTERSECTION)) 9824 goto nla_put_failure; 9825 } else { 9826 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE, 9827 NL80211_REGDOM_TYPE_COUNTRY) || 9828 nla_put_string(msg, NL80211_ATTR_REG_ALPHA2, 9829 request->alpha2)) 9830 goto nla_put_failure; 9831 } 9832 9833 if (request->wiphy_idx != WIPHY_IDX_INVALID && 9834 nla_put_u32(msg, NL80211_ATTR_WIPHY, request->wiphy_idx)) 9835 goto nla_put_failure; 9836 9837 genlmsg_end(msg, hdr); 9838 9839 rcu_read_lock(); 9840 genlmsg_multicast_allns(&nl80211_fam, msg, 0, 9841 NL80211_MCGRP_REGULATORY, GFP_ATOMIC); 9842 rcu_read_unlock(); 9843 9844 return; 9845 9846 nla_put_failure: 9847 genlmsg_cancel(msg, hdr); 9848 nlmsg_free(msg); 9849 } 9850 9851 static void nl80211_send_mlme_event(struct cfg80211_registered_device *rdev, 9852 struct net_device *netdev, 9853 const u8 *buf, size_t len, 9854 enum nl80211_commands cmd, gfp_t gfp) 9855 { 9856 struct sk_buff *msg; 9857 void *hdr; 9858 9859 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 9860 if (!msg) 9861 return; 9862 9863 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd); 9864 if (!hdr) { 9865 nlmsg_free(msg); 9866 return; 9867 } 9868 9869 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 9870 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) || 9871 nla_put(msg, NL80211_ATTR_FRAME, len, buf)) 9872 goto nla_put_failure; 9873 9874 genlmsg_end(msg, hdr); 9875 9876 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 9877 NL80211_MCGRP_MLME, gfp); 9878 return; 9879 9880 nla_put_failure: 9881 genlmsg_cancel(msg, hdr); 9882 nlmsg_free(msg); 9883 } 9884 9885 void nl80211_send_rx_auth(struct cfg80211_registered_device *rdev, 9886 struct net_device *netdev, const u8 *buf, 9887 size_t len, gfp_t gfp) 9888 { 9889 nl80211_send_mlme_event(rdev, netdev, buf, len, 9890 NL80211_CMD_AUTHENTICATE, gfp); 9891 } 9892 9893 void nl80211_send_rx_assoc(struct cfg80211_registered_device *rdev, 9894 struct net_device *netdev, const u8 *buf, 9895 size_t len, gfp_t gfp) 9896 { 9897 nl80211_send_mlme_event(rdev, netdev, buf, len, 9898 NL80211_CMD_ASSOCIATE, gfp); 9899 } 9900 9901 void nl80211_send_deauth(struct cfg80211_registered_device *rdev, 9902 struct net_device *netdev, const u8 *buf, 9903 size_t len, gfp_t gfp) 9904 { 9905 nl80211_send_mlme_event(rdev, netdev, buf, len, 9906 NL80211_CMD_DEAUTHENTICATE, gfp); 9907 } 9908 9909 void nl80211_send_disassoc(struct cfg80211_registered_device *rdev, 9910 struct net_device *netdev, const u8 *buf, 9911 size_t len, gfp_t gfp) 9912 { 9913 nl80211_send_mlme_event(rdev, netdev, buf, len, 9914 NL80211_CMD_DISASSOCIATE, gfp); 9915 } 9916 9917 void cfg80211_rx_unprot_mlme_mgmt(struct net_device *dev, const u8 *buf, 9918 size_t len) 9919 { 9920 struct wireless_dev *wdev = dev->ieee80211_ptr; 9921 struct wiphy *wiphy = wdev->wiphy; 9922 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); 9923 const struct ieee80211_mgmt *mgmt = (void *)buf; 9924 u32 cmd; 9925 9926 if (WARN_ON(len < 2)) 9927 return; 9928 9929 if (ieee80211_is_deauth(mgmt->frame_control)) 9930 cmd = NL80211_CMD_UNPROT_DEAUTHENTICATE; 9931 else 9932 cmd = NL80211_CMD_UNPROT_DISASSOCIATE; 9933 9934 trace_cfg80211_rx_unprot_mlme_mgmt(dev, buf, len); 9935 nl80211_send_mlme_event(rdev, dev, buf, len, cmd, GFP_ATOMIC); 9936 } 9937 EXPORT_SYMBOL(cfg80211_rx_unprot_mlme_mgmt); 9938 9939 static void nl80211_send_mlme_timeout(struct cfg80211_registered_device *rdev, 9940 struct net_device *netdev, int cmd, 9941 const u8 *addr, gfp_t gfp) 9942 { 9943 struct sk_buff *msg; 9944 void *hdr; 9945 9946 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 9947 if (!msg) 9948 return; 9949 9950 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd); 9951 if (!hdr) { 9952 nlmsg_free(msg); 9953 return; 9954 } 9955 9956 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 9957 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) || 9958 nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) || 9959 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) 9960 goto nla_put_failure; 9961 9962 genlmsg_end(msg, hdr); 9963 9964 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 9965 NL80211_MCGRP_MLME, gfp); 9966 return; 9967 9968 nla_put_failure: 9969 genlmsg_cancel(msg, hdr); 9970 nlmsg_free(msg); 9971 } 9972 9973 void nl80211_send_auth_timeout(struct cfg80211_registered_device *rdev, 9974 struct net_device *netdev, const u8 *addr, 9975 gfp_t gfp) 9976 { 9977 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_AUTHENTICATE, 9978 addr, gfp); 9979 } 9980 9981 void nl80211_send_assoc_timeout(struct cfg80211_registered_device *rdev, 9982 struct net_device *netdev, const u8 *addr, 9983 gfp_t gfp) 9984 { 9985 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_ASSOCIATE, 9986 addr, gfp); 9987 } 9988 9989 void nl80211_send_connect_result(struct cfg80211_registered_device *rdev, 9990 struct net_device *netdev, const u8 *bssid, 9991 const u8 *req_ie, size_t req_ie_len, 9992 const u8 *resp_ie, size_t resp_ie_len, 9993 u16 status, gfp_t gfp) 9994 { 9995 struct sk_buff *msg; 9996 void *hdr; 9997 9998 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 9999 if (!msg) 10000 return; 10001 10002 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONNECT); 10003 if (!hdr) { 10004 nlmsg_free(msg); 10005 return; 10006 } 10007 10008 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 10009 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) || 10010 (bssid && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid)) || 10011 nla_put_u16(msg, NL80211_ATTR_STATUS_CODE, status) || 10012 (req_ie && 10013 nla_put(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie)) || 10014 (resp_ie && 10015 nla_put(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie))) 10016 goto nla_put_failure; 10017 10018 genlmsg_end(msg, hdr); 10019 10020 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 10021 NL80211_MCGRP_MLME, gfp); 10022 return; 10023 10024 nla_put_failure: 10025 genlmsg_cancel(msg, hdr); 10026 nlmsg_free(msg); 10027 10028 } 10029 10030 void nl80211_send_roamed(struct cfg80211_registered_device *rdev, 10031 struct net_device *netdev, const u8 *bssid, 10032 const u8 *req_ie, size_t req_ie_len, 10033 const u8 *resp_ie, size_t resp_ie_len, gfp_t gfp) 10034 { 10035 struct sk_buff *msg; 10036 void *hdr; 10037 10038 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 10039 if (!msg) 10040 return; 10041 10042 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ROAM); 10043 if (!hdr) { 10044 nlmsg_free(msg); 10045 return; 10046 } 10047 10048 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 10049 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) || 10050 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid) || 10051 (req_ie && 10052 nla_put(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie)) || 10053 (resp_ie && 10054 nla_put(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie))) 10055 goto nla_put_failure; 10056 10057 genlmsg_end(msg, hdr); 10058 10059 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 10060 NL80211_MCGRP_MLME, gfp); 10061 return; 10062 10063 nla_put_failure: 10064 genlmsg_cancel(msg, hdr); 10065 nlmsg_free(msg); 10066 10067 } 10068 10069 void nl80211_send_disconnected(struct cfg80211_registered_device *rdev, 10070 struct net_device *netdev, u16 reason, 10071 const u8 *ie, size_t ie_len, bool from_ap) 10072 { 10073 struct sk_buff *msg; 10074 void *hdr; 10075 10076 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 10077 if (!msg) 10078 return; 10079 10080 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DISCONNECT); 10081 if (!hdr) { 10082 nlmsg_free(msg); 10083 return; 10084 } 10085 10086 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 10087 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) || 10088 (from_ap && reason && 10089 nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason)) || 10090 (from_ap && 10091 nla_put_flag(msg, NL80211_ATTR_DISCONNECTED_BY_AP)) || 10092 (ie && nla_put(msg, NL80211_ATTR_IE, ie_len, ie))) 10093 goto nla_put_failure; 10094 10095 genlmsg_end(msg, hdr); 10096 10097 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 10098 NL80211_MCGRP_MLME, GFP_KERNEL); 10099 return; 10100 10101 nla_put_failure: 10102 genlmsg_cancel(msg, hdr); 10103 nlmsg_free(msg); 10104 10105 } 10106 10107 void nl80211_send_ibss_bssid(struct cfg80211_registered_device *rdev, 10108 struct net_device *netdev, const u8 *bssid, 10109 gfp_t gfp) 10110 { 10111 struct sk_buff *msg; 10112 void *hdr; 10113 10114 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 10115 if (!msg) 10116 return; 10117 10118 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_JOIN_IBSS); 10119 if (!hdr) { 10120 nlmsg_free(msg); 10121 return; 10122 } 10123 10124 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 10125 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) || 10126 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid)) 10127 goto nla_put_failure; 10128 10129 genlmsg_end(msg, hdr); 10130 10131 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 10132 NL80211_MCGRP_MLME, gfp); 10133 return; 10134 10135 nla_put_failure: 10136 genlmsg_cancel(msg, hdr); 10137 nlmsg_free(msg); 10138 } 10139 10140 void cfg80211_notify_new_peer_candidate(struct net_device *dev, const u8 *addr, 10141 const u8* ie, u8 ie_len, gfp_t gfp) 10142 { 10143 struct wireless_dev *wdev = dev->ieee80211_ptr; 10144 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy); 10145 struct sk_buff *msg; 10146 void *hdr; 10147 10148 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_MESH_POINT)) 10149 return; 10150 10151 trace_cfg80211_notify_new_peer_candidate(dev, addr); 10152 10153 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 10154 if (!msg) 10155 return; 10156 10157 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NEW_PEER_CANDIDATE); 10158 if (!hdr) { 10159 nlmsg_free(msg); 10160 return; 10161 } 10162 10163 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 10164 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) || 10165 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) || 10166 (ie_len && ie && 10167 nla_put(msg, NL80211_ATTR_IE, ie_len , ie))) 10168 goto nla_put_failure; 10169 10170 genlmsg_end(msg, hdr); 10171 10172 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 10173 NL80211_MCGRP_MLME, gfp); 10174 return; 10175 10176 nla_put_failure: 10177 genlmsg_cancel(msg, hdr); 10178 nlmsg_free(msg); 10179 } 10180 EXPORT_SYMBOL(cfg80211_notify_new_peer_candidate); 10181 10182 void nl80211_michael_mic_failure(struct cfg80211_registered_device *rdev, 10183 struct net_device *netdev, const u8 *addr, 10184 enum nl80211_key_type key_type, int key_id, 10185 const u8 *tsc, gfp_t gfp) 10186 { 10187 struct sk_buff *msg; 10188 void *hdr; 10189 10190 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 10191 if (!msg) 10192 return; 10193 10194 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_MICHAEL_MIC_FAILURE); 10195 if (!hdr) { 10196 nlmsg_free(msg); 10197 return; 10198 } 10199 10200 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 10201 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) || 10202 (addr && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) || 10203 nla_put_u32(msg, NL80211_ATTR_KEY_TYPE, key_type) || 10204 (key_id != -1 && 10205 nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_id)) || 10206 (tsc && nla_put(msg, NL80211_ATTR_KEY_SEQ, 6, tsc))) 10207 goto nla_put_failure; 10208 10209 genlmsg_end(msg, hdr); 10210 10211 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 10212 NL80211_MCGRP_MLME, gfp); 10213 return; 10214 10215 nla_put_failure: 10216 genlmsg_cancel(msg, hdr); 10217 nlmsg_free(msg); 10218 } 10219 10220 void nl80211_send_beacon_hint_event(struct wiphy *wiphy, 10221 struct ieee80211_channel *channel_before, 10222 struct ieee80211_channel *channel_after) 10223 { 10224 struct sk_buff *msg; 10225 void *hdr; 10226 struct nlattr *nl_freq; 10227 10228 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC); 10229 if (!msg) 10230 return; 10231 10232 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_BEACON_HINT); 10233 if (!hdr) { 10234 nlmsg_free(msg); 10235 return; 10236 } 10237 10238 /* 10239 * Since we are applying the beacon hint to a wiphy we know its 10240 * wiphy_idx is valid 10241 */ 10242 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy))) 10243 goto nla_put_failure; 10244 10245 /* Before */ 10246 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_BEFORE); 10247 if (!nl_freq) 10248 goto nla_put_failure; 10249 if (nl80211_msg_put_channel(msg, channel_before, false)) 10250 goto nla_put_failure; 10251 nla_nest_end(msg, nl_freq); 10252 10253 /* After */ 10254 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_AFTER); 10255 if (!nl_freq) 10256 goto nla_put_failure; 10257 if (nl80211_msg_put_channel(msg, channel_after, false)) 10258 goto nla_put_failure; 10259 nla_nest_end(msg, nl_freq); 10260 10261 genlmsg_end(msg, hdr); 10262 10263 rcu_read_lock(); 10264 genlmsg_multicast_allns(&nl80211_fam, msg, 0, 10265 NL80211_MCGRP_REGULATORY, GFP_ATOMIC); 10266 rcu_read_unlock(); 10267 10268 return; 10269 10270 nla_put_failure: 10271 genlmsg_cancel(msg, hdr); 10272 nlmsg_free(msg); 10273 } 10274 10275 static void nl80211_send_remain_on_chan_event( 10276 int cmd, struct cfg80211_registered_device *rdev, 10277 struct wireless_dev *wdev, u64 cookie, 10278 struct ieee80211_channel *chan, 10279 unsigned int duration, gfp_t gfp) 10280 { 10281 struct sk_buff *msg; 10282 void *hdr; 10283 10284 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 10285 if (!msg) 10286 return; 10287 10288 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd); 10289 if (!hdr) { 10290 nlmsg_free(msg); 10291 return; 10292 } 10293 10294 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 10295 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX, 10296 wdev->netdev->ifindex)) || 10297 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) || 10298 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, chan->center_freq) || 10299 nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE, 10300 NL80211_CHAN_NO_HT) || 10301 nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie)) 10302 goto nla_put_failure; 10303 10304 if (cmd == NL80211_CMD_REMAIN_ON_CHANNEL && 10305 nla_put_u32(msg, NL80211_ATTR_DURATION, duration)) 10306 goto nla_put_failure; 10307 10308 genlmsg_end(msg, hdr); 10309 10310 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 10311 NL80211_MCGRP_MLME, gfp); 10312 return; 10313 10314 nla_put_failure: 10315 genlmsg_cancel(msg, hdr); 10316 nlmsg_free(msg); 10317 } 10318 10319 void cfg80211_ready_on_channel(struct wireless_dev *wdev, u64 cookie, 10320 struct ieee80211_channel *chan, 10321 unsigned int duration, gfp_t gfp) 10322 { 10323 struct wiphy *wiphy = wdev->wiphy; 10324 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); 10325 10326 trace_cfg80211_ready_on_channel(wdev, cookie, chan, duration); 10327 nl80211_send_remain_on_chan_event(NL80211_CMD_REMAIN_ON_CHANNEL, 10328 rdev, wdev, cookie, chan, 10329 duration, gfp); 10330 } 10331 EXPORT_SYMBOL(cfg80211_ready_on_channel); 10332 10333 void cfg80211_remain_on_channel_expired(struct wireless_dev *wdev, u64 cookie, 10334 struct ieee80211_channel *chan, 10335 gfp_t gfp) 10336 { 10337 struct wiphy *wiphy = wdev->wiphy; 10338 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); 10339 10340 trace_cfg80211_ready_on_channel_expired(wdev, cookie, chan); 10341 nl80211_send_remain_on_chan_event(NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL, 10342 rdev, wdev, cookie, chan, 0, gfp); 10343 } 10344 EXPORT_SYMBOL(cfg80211_remain_on_channel_expired); 10345 10346 void cfg80211_new_sta(struct net_device *dev, const u8 *mac_addr, 10347 struct station_info *sinfo, gfp_t gfp) 10348 { 10349 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy; 10350 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); 10351 struct sk_buff *msg; 10352 10353 trace_cfg80211_new_sta(dev, mac_addr, sinfo); 10354 10355 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 10356 if (!msg) 10357 return; 10358 10359 if (nl80211_send_station(msg, 0, 0, 0, 10360 rdev, dev, mac_addr, sinfo) < 0) { 10361 nlmsg_free(msg); 10362 return; 10363 } 10364 10365 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 10366 NL80211_MCGRP_MLME, gfp); 10367 } 10368 EXPORT_SYMBOL(cfg80211_new_sta); 10369 10370 void cfg80211_del_sta(struct net_device *dev, const u8 *mac_addr, gfp_t gfp) 10371 { 10372 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy; 10373 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); 10374 struct sk_buff *msg; 10375 void *hdr; 10376 10377 trace_cfg80211_del_sta(dev, mac_addr); 10378 10379 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 10380 if (!msg) 10381 return; 10382 10383 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DEL_STATION); 10384 if (!hdr) { 10385 nlmsg_free(msg); 10386 return; 10387 } 10388 10389 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) || 10390 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr)) 10391 goto nla_put_failure; 10392 10393 genlmsg_end(msg, hdr); 10394 10395 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 10396 NL80211_MCGRP_MLME, gfp); 10397 return; 10398 10399 nla_put_failure: 10400 genlmsg_cancel(msg, hdr); 10401 nlmsg_free(msg); 10402 } 10403 EXPORT_SYMBOL(cfg80211_del_sta); 10404 10405 void cfg80211_conn_failed(struct net_device *dev, const u8 *mac_addr, 10406 enum nl80211_connect_failed_reason reason, 10407 gfp_t gfp) 10408 { 10409 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy; 10410 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); 10411 struct sk_buff *msg; 10412 void *hdr; 10413 10414 msg = nlmsg_new(NLMSG_GOODSIZE, gfp); 10415 if (!msg) 10416 return; 10417 10418 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONN_FAILED); 10419 if (!hdr) { 10420 nlmsg_free(msg); 10421 return; 10422 } 10423 10424 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) || 10425 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) || 10426 nla_put_u32(msg, NL80211_ATTR_CONN_FAILED_REASON, reason)) 10427 goto nla_put_failure; 10428 10429 genlmsg_end(msg, hdr); 10430 10431 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 10432 NL80211_MCGRP_MLME, gfp); 10433 return; 10434 10435 nla_put_failure: 10436 genlmsg_cancel(msg, hdr); 10437 nlmsg_free(msg); 10438 } 10439 EXPORT_SYMBOL(cfg80211_conn_failed); 10440 10441 static bool __nl80211_unexpected_frame(struct net_device *dev, u8 cmd, 10442 const u8 *addr, gfp_t gfp) 10443 { 10444 struct wireless_dev *wdev = dev->ieee80211_ptr; 10445 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy); 10446 struct sk_buff *msg; 10447 void *hdr; 10448 u32 nlportid = ACCESS_ONCE(wdev->ap_unexpected_nlportid); 10449 10450 if (!nlportid) 10451 return false; 10452 10453 msg = nlmsg_new(100, gfp); 10454 if (!msg) 10455 return true; 10456 10457 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd); 10458 if (!hdr) { 10459 nlmsg_free(msg); 10460 return true; 10461 } 10462 10463 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 10464 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) || 10465 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) 10466 goto nla_put_failure; 10467 10468 genlmsg_end(msg, hdr); 10469 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid); 10470 return true; 10471 10472 nla_put_failure: 10473 genlmsg_cancel(msg, hdr); 10474 nlmsg_free(msg); 10475 return true; 10476 } 10477 10478 bool cfg80211_rx_spurious_frame(struct net_device *dev, 10479 const u8 *addr, gfp_t gfp) 10480 { 10481 struct wireless_dev *wdev = dev->ieee80211_ptr; 10482 bool ret; 10483 10484 trace_cfg80211_rx_spurious_frame(dev, addr); 10485 10486 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP && 10487 wdev->iftype != NL80211_IFTYPE_P2P_GO)) { 10488 trace_cfg80211_return_bool(false); 10489 return false; 10490 } 10491 ret = __nl80211_unexpected_frame(dev, NL80211_CMD_UNEXPECTED_FRAME, 10492 addr, gfp); 10493 trace_cfg80211_return_bool(ret); 10494 return ret; 10495 } 10496 EXPORT_SYMBOL(cfg80211_rx_spurious_frame); 10497 10498 bool cfg80211_rx_unexpected_4addr_frame(struct net_device *dev, 10499 const u8 *addr, gfp_t gfp) 10500 { 10501 struct wireless_dev *wdev = dev->ieee80211_ptr; 10502 bool ret; 10503 10504 trace_cfg80211_rx_unexpected_4addr_frame(dev, addr); 10505 10506 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP && 10507 wdev->iftype != NL80211_IFTYPE_P2P_GO && 10508 wdev->iftype != NL80211_IFTYPE_AP_VLAN)) { 10509 trace_cfg80211_return_bool(false); 10510 return false; 10511 } 10512 ret = __nl80211_unexpected_frame(dev, 10513 NL80211_CMD_UNEXPECTED_4ADDR_FRAME, 10514 addr, gfp); 10515 trace_cfg80211_return_bool(ret); 10516 return ret; 10517 } 10518 EXPORT_SYMBOL(cfg80211_rx_unexpected_4addr_frame); 10519 10520 int nl80211_send_mgmt(struct cfg80211_registered_device *rdev, 10521 struct wireless_dev *wdev, u32 nlportid, 10522 int freq, int sig_dbm, 10523 const u8 *buf, size_t len, u32 flags, gfp_t gfp) 10524 { 10525 struct net_device *netdev = wdev->netdev; 10526 struct sk_buff *msg; 10527 void *hdr; 10528 10529 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 10530 if (!msg) 10531 return -ENOMEM; 10532 10533 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME); 10534 if (!hdr) { 10535 nlmsg_free(msg); 10536 return -ENOMEM; 10537 } 10538 10539 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 10540 (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX, 10541 netdev->ifindex)) || 10542 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) || 10543 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq) || 10544 (sig_dbm && 10545 nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) || 10546 nla_put(msg, NL80211_ATTR_FRAME, len, buf) || 10547 (flags && 10548 nla_put_u32(msg, NL80211_ATTR_RXMGMT_FLAGS, flags))) 10549 goto nla_put_failure; 10550 10551 genlmsg_end(msg, hdr); 10552 10553 return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid); 10554 10555 nla_put_failure: 10556 genlmsg_cancel(msg, hdr); 10557 nlmsg_free(msg); 10558 return -ENOBUFS; 10559 } 10560 10561 void cfg80211_mgmt_tx_status(struct wireless_dev *wdev, u64 cookie, 10562 const u8 *buf, size_t len, bool ack, gfp_t gfp) 10563 { 10564 struct wiphy *wiphy = wdev->wiphy; 10565 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); 10566 struct net_device *netdev = wdev->netdev; 10567 struct sk_buff *msg; 10568 void *hdr; 10569 10570 trace_cfg80211_mgmt_tx_status(wdev, cookie, ack); 10571 10572 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 10573 if (!msg) 10574 return; 10575 10576 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME_TX_STATUS); 10577 if (!hdr) { 10578 nlmsg_free(msg); 10579 return; 10580 } 10581 10582 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 10583 (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX, 10584 netdev->ifindex)) || 10585 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) || 10586 nla_put(msg, NL80211_ATTR_FRAME, len, buf) || 10587 nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie) || 10588 (ack && nla_put_flag(msg, NL80211_ATTR_ACK))) 10589 goto nla_put_failure; 10590 10591 genlmsg_end(msg, hdr); 10592 10593 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 10594 NL80211_MCGRP_MLME, gfp); 10595 return; 10596 10597 nla_put_failure: 10598 genlmsg_cancel(msg, hdr); 10599 nlmsg_free(msg); 10600 } 10601 EXPORT_SYMBOL(cfg80211_mgmt_tx_status); 10602 10603 void cfg80211_cqm_rssi_notify(struct net_device *dev, 10604 enum nl80211_cqm_rssi_threshold_event rssi_event, 10605 gfp_t gfp) 10606 { 10607 struct wireless_dev *wdev = dev->ieee80211_ptr; 10608 struct wiphy *wiphy = wdev->wiphy; 10609 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); 10610 struct sk_buff *msg; 10611 struct nlattr *pinfoattr; 10612 void *hdr; 10613 10614 trace_cfg80211_cqm_rssi_notify(dev, rssi_event); 10615 10616 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 10617 if (!msg) 10618 return; 10619 10620 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM); 10621 if (!hdr) { 10622 nlmsg_free(msg); 10623 return; 10624 } 10625 10626 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 10627 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex)) 10628 goto nla_put_failure; 10629 10630 pinfoattr = nla_nest_start(msg, NL80211_ATTR_CQM); 10631 if (!pinfoattr) 10632 goto nla_put_failure; 10633 10634 if (nla_put_u32(msg, NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT, 10635 rssi_event)) 10636 goto nla_put_failure; 10637 10638 nla_nest_end(msg, pinfoattr); 10639 10640 genlmsg_end(msg, hdr); 10641 10642 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 10643 NL80211_MCGRP_MLME, gfp); 10644 return; 10645 10646 nla_put_failure: 10647 genlmsg_cancel(msg, hdr); 10648 nlmsg_free(msg); 10649 } 10650 EXPORT_SYMBOL(cfg80211_cqm_rssi_notify); 10651 10652 static void nl80211_gtk_rekey_notify(struct cfg80211_registered_device *rdev, 10653 struct net_device *netdev, const u8 *bssid, 10654 const u8 *replay_ctr, gfp_t gfp) 10655 { 10656 struct sk_buff *msg; 10657 struct nlattr *rekey_attr; 10658 void *hdr; 10659 10660 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 10661 if (!msg) 10662 return; 10663 10664 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_REKEY_OFFLOAD); 10665 if (!hdr) { 10666 nlmsg_free(msg); 10667 return; 10668 } 10669 10670 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 10671 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) || 10672 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid)) 10673 goto nla_put_failure; 10674 10675 rekey_attr = nla_nest_start(msg, NL80211_ATTR_REKEY_DATA); 10676 if (!rekey_attr) 10677 goto nla_put_failure; 10678 10679 if (nla_put(msg, NL80211_REKEY_DATA_REPLAY_CTR, 10680 NL80211_REPLAY_CTR_LEN, replay_ctr)) 10681 goto nla_put_failure; 10682 10683 nla_nest_end(msg, rekey_attr); 10684 10685 genlmsg_end(msg, hdr); 10686 10687 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 10688 NL80211_MCGRP_MLME, gfp); 10689 return; 10690 10691 nla_put_failure: 10692 genlmsg_cancel(msg, hdr); 10693 nlmsg_free(msg); 10694 } 10695 10696 void cfg80211_gtk_rekey_notify(struct net_device *dev, const u8 *bssid, 10697 const u8 *replay_ctr, gfp_t gfp) 10698 { 10699 struct wireless_dev *wdev = dev->ieee80211_ptr; 10700 struct wiphy *wiphy = wdev->wiphy; 10701 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); 10702 10703 trace_cfg80211_gtk_rekey_notify(dev, bssid); 10704 nl80211_gtk_rekey_notify(rdev, dev, bssid, replay_ctr, gfp); 10705 } 10706 EXPORT_SYMBOL(cfg80211_gtk_rekey_notify); 10707 10708 static void 10709 nl80211_pmksa_candidate_notify(struct cfg80211_registered_device *rdev, 10710 struct net_device *netdev, int index, 10711 const u8 *bssid, bool preauth, gfp_t gfp) 10712 { 10713 struct sk_buff *msg; 10714 struct nlattr *attr; 10715 void *hdr; 10716 10717 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 10718 if (!msg) 10719 return; 10720 10721 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PMKSA_CANDIDATE); 10722 if (!hdr) { 10723 nlmsg_free(msg); 10724 return; 10725 } 10726 10727 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 10728 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex)) 10729 goto nla_put_failure; 10730 10731 attr = nla_nest_start(msg, NL80211_ATTR_PMKSA_CANDIDATE); 10732 if (!attr) 10733 goto nla_put_failure; 10734 10735 if (nla_put_u32(msg, NL80211_PMKSA_CANDIDATE_INDEX, index) || 10736 nla_put(msg, NL80211_PMKSA_CANDIDATE_BSSID, ETH_ALEN, bssid) || 10737 (preauth && 10738 nla_put_flag(msg, NL80211_PMKSA_CANDIDATE_PREAUTH))) 10739 goto nla_put_failure; 10740 10741 nla_nest_end(msg, attr); 10742 10743 genlmsg_end(msg, hdr); 10744 10745 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 10746 NL80211_MCGRP_MLME, gfp); 10747 return; 10748 10749 nla_put_failure: 10750 genlmsg_cancel(msg, hdr); 10751 nlmsg_free(msg); 10752 } 10753 10754 void cfg80211_pmksa_candidate_notify(struct net_device *dev, int index, 10755 const u8 *bssid, bool preauth, gfp_t gfp) 10756 { 10757 struct wireless_dev *wdev = dev->ieee80211_ptr; 10758 struct wiphy *wiphy = wdev->wiphy; 10759 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); 10760 10761 trace_cfg80211_pmksa_candidate_notify(dev, index, bssid, preauth); 10762 nl80211_pmksa_candidate_notify(rdev, dev, index, bssid, preauth, gfp); 10763 } 10764 EXPORT_SYMBOL(cfg80211_pmksa_candidate_notify); 10765 10766 static void nl80211_ch_switch_notify(struct cfg80211_registered_device *rdev, 10767 struct net_device *netdev, 10768 struct cfg80211_chan_def *chandef, 10769 gfp_t gfp) 10770 { 10771 struct sk_buff *msg; 10772 void *hdr; 10773 10774 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 10775 if (!msg) 10776 return; 10777 10778 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CH_SWITCH_NOTIFY); 10779 if (!hdr) { 10780 nlmsg_free(msg); 10781 return; 10782 } 10783 10784 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex)) 10785 goto nla_put_failure; 10786 10787 if (nl80211_send_chandef(msg, chandef)) 10788 goto nla_put_failure; 10789 10790 genlmsg_end(msg, hdr); 10791 10792 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 10793 NL80211_MCGRP_MLME, gfp); 10794 return; 10795 10796 nla_put_failure: 10797 genlmsg_cancel(msg, hdr); 10798 nlmsg_free(msg); 10799 } 10800 10801 void cfg80211_ch_switch_notify(struct net_device *dev, 10802 struct cfg80211_chan_def *chandef) 10803 { 10804 struct wireless_dev *wdev = dev->ieee80211_ptr; 10805 struct wiphy *wiphy = wdev->wiphy; 10806 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); 10807 10808 trace_cfg80211_ch_switch_notify(dev, chandef); 10809 10810 wdev_lock(wdev); 10811 10812 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP && 10813 wdev->iftype != NL80211_IFTYPE_P2P_GO && 10814 wdev->iftype != NL80211_IFTYPE_ADHOC && 10815 wdev->iftype != NL80211_IFTYPE_MESH_POINT)) 10816 goto out; 10817 10818 wdev->channel = chandef->chan; 10819 nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL); 10820 out: 10821 wdev_unlock(wdev); 10822 return; 10823 } 10824 EXPORT_SYMBOL(cfg80211_ch_switch_notify); 10825 10826 void cfg80211_cqm_txe_notify(struct net_device *dev, 10827 const u8 *peer, u32 num_packets, 10828 u32 rate, u32 intvl, gfp_t gfp) 10829 { 10830 struct wireless_dev *wdev = dev->ieee80211_ptr; 10831 struct wiphy *wiphy = wdev->wiphy; 10832 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); 10833 struct sk_buff *msg; 10834 struct nlattr *pinfoattr; 10835 void *hdr; 10836 10837 msg = nlmsg_new(NLMSG_GOODSIZE, gfp); 10838 if (!msg) 10839 return; 10840 10841 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM); 10842 if (!hdr) { 10843 nlmsg_free(msg); 10844 return; 10845 } 10846 10847 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 10848 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) || 10849 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer)) 10850 goto nla_put_failure; 10851 10852 pinfoattr = nla_nest_start(msg, NL80211_ATTR_CQM); 10853 if (!pinfoattr) 10854 goto nla_put_failure; 10855 10856 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_PKTS, num_packets)) 10857 goto nla_put_failure; 10858 10859 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_RATE, rate)) 10860 goto nla_put_failure; 10861 10862 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_INTVL, intvl)) 10863 goto nla_put_failure; 10864 10865 nla_nest_end(msg, pinfoattr); 10866 10867 genlmsg_end(msg, hdr); 10868 10869 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 10870 NL80211_MCGRP_MLME, gfp); 10871 return; 10872 10873 nla_put_failure: 10874 genlmsg_cancel(msg, hdr); 10875 nlmsg_free(msg); 10876 } 10877 EXPORT_SYMBOL(cfg80211_cqm_txe_notify); 10878 10879 void 10880 nl80211_radar_notify(struct cfg80211_registered_device *rdev, 10881 struct cfg80211_chan_def *chandef, 10882 enum nl80211_radar_event event, 10883 struct net_device *netdev, gfp_t gfp) 10884 { 10885 struct sk_buff *msg; 10886 void *hdr; 10887 10888 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 10889 if (!msg) 10890 return; 10891 10892 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_RADAR_DETECT); 10893 if (!hdr) { 10894 nlmsg_free(msg); 10895 return; 10896 } 10897 10898 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx)) 10899 goto nla_put_failure; 10900 10901 /* NOP and radar events don't need a netdev parameter */ 10902 if (netdev) { 10903 struct wireless_dev *wdev = netdev->ieee80211_ptr; 10904 10905 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) || 10906 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev))) 10907 goto nla_put_failure; 10908 } 10909 10910 if (nla_put_u32(msg, NL80211_ATTR_RADAR_EVENT, event)) 10911 goto nla_put_failure; 10912 10913 if (nl80211_send_chandef(msg, chandef)) 10914 goto nla_put_failure; 10915 10916 genlmsg_end(msg, hdr); 10917 10918 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 10919 NL80211_MCGRP_MLME, gfp); 10920 return; 10921 10922 nla_put_failure: 10923 genlmsg_cancel(msg, hdr); 10924 nlmsg_free(msg); 10925 } 10926 10927 void cfg80211_cqm_pktloss_notify(struct net_device *dev, 10928 const u8 *peer, u32 num_packets, gfp_t gfp) 10929 { 10930 struct wireless_dev *wdev = dev->ieee80211_ptr; 10931 struct wiphy *wiphy = wdev->wiphy; 10932 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); 10933 struct sk_buff *msg; 10934 struct nlattr *pinfoattr; 10935 void *hdr; 10936 10937 trace_cfg80211_cqm_pktloss_notify(dev, peer, num_packets); 10938 10939 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 10940 if (!msg) 10941 return; 10942 10943 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM); 10944 if (!hdr) { 10945 nlmsg_free(msg); 10946 return; 10947 } 10948 10949 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 10950 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) || 10951 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer)) 10952 goto nla_put_failure; 10953 10954 pinfoattr = nla_nest_start(msg, NL80211_ATTR_CQM); 10955 if (!pinfoattr) 10956 goto nla_put_failure; 10957 10958 if (nla_put_u32(msg, NL80211_ATTR_CQM_PKT_LOSS_EVENT, num_packets)) 10959 goto nla_put_failure; 10960 10961 nla_nest_end(msg, pinfoattr); 10962 10963 genlmsg_end(msg, hdr); 10964 10965 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 10966 NL80211_MCGRP_MLME, gfp); 10967 return; 10968 10969 nla_put_failure: 10970 genlmsg_cancel(msg, hdr); 10971 nlmsg_free(msg); 10972 } 10973 EXPORT_SYMBOL(cfg80211_cqm_pktloss_notify); 10974 10975 void cfg80211_probe_status(struct net_device *dev, const u8 *addr, 10976 u64 cookie, bool acked, gfp_t gfp) 10977 { 10978 struct wireless_dev *wdev = dev->ieee80211_ptr; 10979 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy); 10980 struct sk_buff *msg; 10981 void *hdr; 10982 10983 trace_cfg80211_probe_status(dev, addr, cookie, acked); 10984 10985 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 10986 10987 if (!msg) 10988 return; 10989 10990 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PROBE_CLIENT); 10991 if (!hdr) { 10992 nlmsg_free(msg); 10993 return; 10994 } 10995 10996 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 10997 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) || 10998 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) || 10999 nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie) || 11000 (acked && nla_put_flag(msg, NL80211_ATTR_ACK))) 11001 goto nla_put_failure; 11002 11003 genlmsg_end(msg, hdr); 11004 11005 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 11006 NL80211_MCGRP_MLME, gfp); 11007 return; 11008 11009 nla_put_failure: 11010 genlmsg_cancel(msg, hdr); 11011 nlmsg_free(msg); 11012 } 11013 EXPORT_SYMBOL(cfg80211_probe_status); 11014 11015 void cfg80211_report_obss_beacon(struct wiphy *wiphy, 11016 const u8 *frame, size_t len, 11017 int freq, int sig_dbm) 11018 { 11019 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); 11020 struct sk_buff *msg; 11021 void *hdr; 11022 struct cfg80211_beacon_registration *reg; 11023 11024 trace_cfg80211_report_obss_beacon(wiphy, frame, len, freq, sig_dbm); 11025 11026 spin_lock_bh(&rdev->beacon_registrations_lock); 11027 list_for_each_entry(reg, &rdev->beacon_registrations, list) { 11028 msg = nlmsg_new(len + 100, GFP_ATOMIC); 11029 if (!msg) { 11030 spin_unlock_bh(&rdev->beacon_registrations_lock); 11031 return; 11032 } 11033 11034 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME); 11035 if (!hdr) 11036 goto nla_put_failure; 11037 11038 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 11039 (freq && 11040 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq)) || 11041 (sig_dbm && 11042 nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) || 11043 nla_put(msg, NL80211_ATTR_FRAME, len, frame)) 11044 goto nla_put_failure; 11045 11046 genlmsg_end(msg, hdr); 11047 11048 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, reg->nlportid); 11049 } 11050 spin_unlock_bh(&rdev->beacon_registrations_lock); 11051 return; 11052 11053 nla_put_failure: 11054 spin_unlock_bh(&rdev->beacon_registrations_lock); 11055 if (hdr) 11056 genlmsg_cancel(msg, hdr); 11057 nlmsg_free(msg); 11058 } 11059 EXPORT_SYMBOL(cfg80211_report_obss_beacon); 11060 11061 #ifdef CONFIG_PM 11062 void cfg80211_report_wowlan_wakeup(struct wireless_dev *wdev, 11063 struct cfg80211_wowlan_wakeup *wakeup, 11064 gfp_t gfp) 11065 { 11066 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy); 11067 struct sk_buff *msg; 11068 void *hdr; 11069 int size = 200; 11070 11071 trace_cfg80211_report_wowlan_wakeup(wdev->wiphy, wdev, wakeup); 11072 11073 if (wakeup) 11074 size += wakeup->packet_present_len; 11075 11076 msg = nlmsg_new(size, gfp); 11077 if (!msg) 11078 return; 11079 11080 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_WOWLAN); 11081 if (!hdr) 11082 goto free_msg; 11083 11084 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 11085 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev))) 11086 goto free_msg; 11087 11088 if (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX, 11089 wdev->netdev->ifindex)) 11090 goto free_msg; 11091 11092 if (wakeup) { 11093 struct nlattr *reasons; 11094 11095 reasons = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS); 11096 11097 if (wakeup->disconnect && 11098 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) 11099 goto free_msg; 11100 if (wakeup->magic_pkt && 11101 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) 11102 goto free_msg; 11103 if (wakeup->gtk_rekey_failure && 11104 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) 11105 goto free_msg; 11106 if (wakeup->eap_identity_req && 11107 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) 11108 goto free_msg; 11109 if (wakeup->four_way_handshake && 11110 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) 11111 goto free_msg; 11112 if (wakeup->rfkill_release && 11113 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)) 11114 goto free_msg; 11115 11116 if (wakeup->pattern_idx >= 0 && 11117 nla_put_u32(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN, 11118 wakeup->pattern_idx)) 11119 goto free_msg; 11120 11121 if (wakeup->tcp_match) 11122 nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_MATCH); 11123 11124 if (wakeup->tcp_connlost) 11125 nla_put_flag(msg, 11126 NL80211_WOWLAN_TRIG_WAKEUP_TCP_CONNLOST); 11127 11128 if (wakeup->tcp_nomoretokens) 11129 nla_put_flag(msg, 11130 NL80211_WOWLAN_TRIG_WAKEUP_TCP_NOMORETOKENS); 11131 11132 if (wakeup->packet) { 11133 u32 pkt_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211; 11134 u32 len_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211_LEN; 11135 11136 if (!wakeup->packet_80211) { 11137 pkt_attr = 11138 NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023; 11139 len_attr = 11140 NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023_LEN; 11141 } 11142 11143 if (wakeup->packet_len && 11144 nla_put_u32(msg, len_attr, wakeup->packet_len)) 11145 goto free_msg; 11146 11147 if (nla_put(msg, pkt_attr, wakeup->packet_present_len, 11148 wakeup->packet)) 11149 goto free_msg; 11150 } 11151 11152 nla_nest_end(msg, reasons); 11153 } 11154 11155 genlmsg_end(msg, hdr); 11156 11157 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 11158 NL80211_MCGRP_MLME, gfp); 11159 return; 11160 11161 free_msg: 11162 nlmsg_free(msg); 11163 } 11164 EXPORT_SYMBOL(cfg80211_report_wowlan_wakeup); 11165 #endif 11166 11167 void cfg80211_tdls_oper_request(struct net_device *dev, const u8 *peer, 11168 enum nl80211_tdls_operation oper, 11169 u16 reason_code, gfp_t gfp) 11170 { 11171 struct wireless_dev *wdev = dev->ieee80211_ptr; 11172 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy); 11173 struct sk_buff *msg; 11174 void *hdr; 11175 11176 trace_cfg80211_tdls_oper_request(wdev->wiphy, dev, peer, oper, 11177 reason_code); 11178 11179 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 11180 if (!msg) 11181 return; 11182 11183 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_TDLS_OPER); 11184 if (!hdr) { 11185 nlmsg_free(msg); 11186 return; 11187 } 11188 11189 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 11190 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) || 11191 nla_put_u8(msg, NL80211_ATTR_TDLS_OPERATION, oper) || 11192 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer) || 11193 (reason_code > 0 && 11194 nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason_code))) 11195 goto nla_put_failure; 11196 11197 genlmsg_end(msg, hdr); 11198 11199 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 11200 NL80211_MCGRP_MLME, gfp); 11201 return; 11202 11203 nla_put_failure: 11204 genlmsg_cancel(msg, hdr); 11205 nlmsg_free(msg); 11206 } 11207 EXPORT_SYMBOL(cfg80211_tdls_oper_request); 11208 11209 static int nl80211_netlink_notify(struct notifier_block * nb, 11210 unsigned long state, 11211 void *_notify) 11212 { 11213 struct netlink_notify *notify = _notify; 11214 struct cfg80211_registered_device *rdev; 11215 struct wireless_dev *wdev; 11216 struct cfg80211_beacon_registration *reg, *tmp; 11217 11218 if (state != NETLINK_URELEASE) 11219 return NOTIFY_DONE; 11220 11221 rcu_read_lock(); 11222 11223 list_for_each_entry_rcu(rdev, &cfg80211_rdev_list, list) { 11224 list_for_each_entry_rcu(wdev, &rdev->wdev_list, list) 11225 cfg80211_mlme_unregister_socket(wdev, notify->portid); 11226 11227 spin_lock_bh(&rdev->beacon_registrations_lock); 11228 list_for_each_entry_safe(reg, tmp, &rdev->beacon_registrations, 11229 list) { 11230 if (reg->nlportid == notify->portid) { 11231 list_del(®->list); 11232 kfree(reg); 11233 break; 11234 } 11235 } 11236 spin_unlock_bh(&rdev->beacon_registrations_lock); 11237 } 11238 11239 rcu_read_unlock(); 11240 11241 return NOTIFY_DONE; 11242 } 11243 11244 static struct notifier_block nl80211_netlink_notifier = { 11245 .notifier_call = nl80211_netlink_notify, 11246 }; 11247 11248 void cfg80211_ft_event(struct net_device *netdev, 11249 struct cfg80211_ft_event_params *ft_event) 11250 { 11251 struct wiphy *wiphy = netdev->ieee80211_ptr->wiphy; 11252 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); 11253 struct sk_buff *msg; 11254 void *hdr; 11255 11256 trace_cfg80211_ft_event(wiphy, netdev, ft_event); 11257 11258 if (!ft_event->target_ap) 11259 return; 11260 11261 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 11262 if (!msg) 11263 return; 11264 11265 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FT_EVENT); 11266 if (!hdr) { 11267 nlmsg_free(msg); 11268 return; 11269 } 11270 11271 nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx); 11272 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex); 11273 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, ft_event->target_ap); 11274 if (ft_event->ies) 11275 nla_put(msg, NL80211_ATTR_IE, ft_event->ies_len, ft_event->ies); 11276 if (ft_event->ric_ies) 11277 nla_put(msg, NL80211_ATTR_IE_RIC, ft_event->ric_ies_len, 11278 ft_event->ric_ies); 11279 11280 genlmsg_end(msg, hdr); 11281 11282 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 11283 NL80211_MCGRP_MLME, GFP_KERNEL); 11284 } 11285 EXPORT_SYMBOL(cfg80211_ft_event); 11286 11287 void cfg80211_crit_proto_stopped(struct wireless_dev *wdev, gfp_t gfp) 11288 { 11289 struct cfg80211_registered_device *rdev; 11290 struct sk_buff *msg; 11291 void *hdr; 11292 u32 nlportid; 11293 11294 rdev = wiphy_to_dev(wdev->wiphy); 11295 if (!rdev->crit_proto_nlportid) 11296 return; 11297 11298 nlportid = rdev->crit_proto_nlportid; 11299 rdev->crit_proto_nlportid = 0; 11300 11301 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 11302 if (!msg) 11303 return; 11304 11305 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CRIT_PROTOCOL_STOP); 11306 if (!hdr) 11307 goto nla_put_failure; 11308 11309 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 11310 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev))) 11311 goto nla_put_failure; 11312 11313 genlmsg_end(msg, hdr); 11314 11315 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid); 11316 return; 11317 11318 nla_put_failure: 11319 if (hdr) 11320 genlmsg_cancel(msg, hdr); 11321 nlmsg_free(msg); 11322 11323 } 11324 EXPORT_SYMBOL(cfg80211_crit_proto_stopped); 11325 11326 /* initialisation/exit functions */ 11327 11328 int nl80211_init(void) 11329 { 11330 int err; 11331 11332 err = genl_register_family_with_ops_groups(&nl80211_fam, nl80211_ops, 11333 nl80211_mcgrps); 11334 if (err) 11335 return err; 11336 11337 err = netlink_register_notifier(&nl80211_netlink_notifier); 11338 if (err) 11339 goto err_out; 11340 11341 return 0; 11342 err_out: 11343 genl_unregister_family(&nl80211_fam); 11344 return err; 11345 } 11346 11347 void nl80211_exit(void) 11348 { 11349 netlink_unregister_notifier(&nl80211_netlink_notifier); 11350 genl_unregister_family(&nl80211_fam); 11351 } 11352