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 "core.h" 23 #include "nl80211.h" 24 #include "reg.h" 25 26 static int nl80211_pre_doit(struct genl_ops *ops, struct sk_buff *skb, 27 struct genl_info *info); 28 static void nl80211_post_doit(struct genl_ops *ops, struct sk_buff *skb, 29 struct genl_info *info); 30 31 /* the netlink family */ 32 static struct genl_family nl80211_fam = { 33 .id = GENL_ID_GENERATE, /* don't bother with a hardcoded ID */ 34 .name = "nl80211", /* have users key off the name instead */ 35 .hdrsize = 0, /* no private header */ 36 .version = 1, /* no particular meaning now */ 37 .maxattr = NL80211_ATTR_MAX, 38 .netnsok = true, 39 .pre_doit = nl80211_pre_doit, 40 .post_doit = nl80211_post_doit, 41 }; 42 43 /* internal helper: get rdev and dev */ 44 static int get_rdev_dev_by_info_ifindex(struct genl_info *info, 45 struct cfg80211_registered_device **rdev, 46 struct net_device **dev) 47 { 48 struct nlattr **attrs = info->attrs; 49 int ifindex; 50 51 if (!attrs[NL80211_ATTR_IFINDEX]) 52 return -EINVAL; 53 54 ifindex = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]); 55 *dev = dev_get_by_index(genl_info_net(info), ifindex); 56 if (!*dev) 57 return -ENODEV; 58 59 *rdev = cfg80211_get_dev_from_ifindex(genl_info_net(info), ifindex); 60 if (IS_ERR(*rdev)) { 61 dev_put(*dev); 62 return PTR_ERR(*rdev); 63 } 64 65 return 0; 66 } 67 68 /* policy for the attributes */ 69 static const struct nla_policy nl80211_policy[NL80211_ATTR_MAX+1] = { 70 [NL80211_ATTR_WIPHY] = { .type = NLA_U32 }, 71 [NL80211_ATTR_WIPHY_NAME] = { .type = NLA_NUL_STRING, 72 .len = 20-1 }, 73 [NL80211_ATTR_WIPHY_TXQ_PARAMS] = { .type = NLA_NESTED }, 74 [NL80211_ATTR_WIPHY_FREQ] = { .type = NLA_U32 }, 75 [NL80211_ATTR_WIPHY_CHANNEL_TYPE] = { .type = NLA_U32 }, 76 [NL80211_ATTR_WIPHY_RETRY_SHORT] = { .type = NLA_U8 }, 77 [NL80211_ATTR_WIPHY_RETRY_LONG] = { .type = NLA_U8 }, 78 [NL80211_ATTR_WIPHY_FRAG_THRESHOLD] = { .type = NLA_U32 }, 79 [NL80211_ATTR_WIPHY_RTS_THRESHOLD] = { .type = NLA_U32 }, 80 [NL80211_ATTR_WIPHY_COVERAGE_CLASS] = { .type = NLA_U8 }, 81 82 [NL80211_ATTR_IFTYPE] = { .type = NLA_U32 }, 83 [NL80211_ATTR_IFINDEX] = { .type = NLA_U32 }, 84 [NL80211_ATTR_IFNAME] = { .type = NLA_NUL_STRING, .len = IFNAMSIZ-1 }, 85 86 [NL80211_ATTR_MAC] = { .type = NLA_BINARY, .len = ETH_ALEN }, 87 [NL80211_ATTR_PREV_BSSID] = { .type = NLA_BINARY, .len = ETH_ALEN }, 88 89 [NL80211_ATTR_KEY] = { .type = NLA_NESTED, }, 90 [NL80211_ATTR_KEY_DATA] = { .type = NLA_BINARY, 91 .len = WLAN_MAX_KEY_LEN }, 92 [NL80211_ATTR_KEY_IDX] = { .type = NLA_U8 }, 93 [NL80211_ATTR_KEY_CIPHER] = { .type = NLA_U32 }, 94 [NL80211_ATTR_KEY_DEFAULT] = { .type = NLA_FLAG }, 95 [NL80211_ATTR_KEY_SEQ] = { .type = NLA_BINARY, .len = 8 }, 96 [NL80211_ATTR_KEY_TYPE] = { .type = NLA_U32 }, 97 98 [NL80211_ATTR_BEACON_INTERVAL] = { .type = NLA_U32 }, 99 [NL80211_ATTR_DTIM_PERIOD] = { .type = NLA_U32 }, 100 [NL80211_ATTR_BEACON_HEAD] = { .type = NLA_BINARY, 101 .len = IEEE80211_MAX_DATA_LEN }, 102 [NL80211_ATTR_BEACON_TAIL] = { .type = NLA_BINARY, 103 .len = IEEE80211_MAX_DATA_LEN }, 104 [NL80211_ATTR_STA_AID] = { .type = NLA_U16 }, 105 [NL80211_ATTR_STA_FLAGS] = { .type = NLA_NESTED }, 106 [NL80211_ATTR_STA_LISTEN_INTERVAL] = { .type = NLA_U16 }, 107 [NL80211_ATTR_STA_SUPPORTED_RATES] = { .type = NLA_BINARY, 108 .len = NL80211_MAX_SUPP_RATES }, 109 [NL80211_ATTR_STA_PLINK_ACTION] = { .type = NLA_U8 }, 110 [NL80211_ATTR_STA_VLAN] = { .type = NLA_U32 }, 111 [NL80211_ATTR_MNTR_FLAGS] = { /* NLA_NESTED can't be empty */ }, 112 [NL80211_ATTR_MESH_ID] = { .type = NLA_BINARY, 113 .len = IEEE80211_MAX_MESH_ID_LEN }, 114 [NL80211_ATTR_MPATH_NEXT_HOP] = { .type = NLA_U32 }, 115 116 [NL80211_ATTR_REG_ALPHA2] = { .type = NLA_STRING, .len = 2 }, 117 [NL80211_ATTR_REG_RULES] = { .type = NLA_NESTED }, 118 119 [NL80211_ATTR_BSS_CTS_PROT] = { .type = NLA_U8 }, 120 [NL80211_ATTR_BSS_SHORT_PREAMBLE] = { .type = NLA_U8 }, 121 [NL80211_ATTR_BSS_SHORT_SLOT_TIME] = { .type = NLA_U8 }, 122 [NL80211_ATTR_BSS_BASIC_RATES] = { .type = NLA_BINARY, 123 .len = NL80211_MAX_SUPP_RATES }, 124 [NL80211_ATTR_BSS_HT_OPMODE] = { .type = NLA_U16 }, 125 126 [NL80211_ATTR_MESH_CONFIG] = { .type = NLA_NESTED }, 127 [NL80211_ATTR_SUPPORT_MESH_AUTH] = { .type = NLA_FLAG }, 128 129 [NL80211_ATTR_HT_CAPABILITY] = { .type = NLA_BINARY, 130 .len = NL80211_HT_CAPABILITY_LEN }, 131 132 [NL80211_ATTR_MGMT_SUBTYPE] = { .type = NLA_U8 }, 133 [NL80211_ATTR_IE] = { .type = NLA_BINARY, 134 .len = IEEE80211_MAX_DATA_LEN }, 135 [NL80211_ATTR_SCAN_FREQUENCIES] = { .type = NLA_NESTED }, 136 [NL80211_ATTR_SCAN_SSIDS] = { .type = NLA_NESTED }, 137 138 [NL80211_ATTR_SSID] = { .type = NLA_BINARY, 139 .len = IEEE80211_MAX_SSID_LEN }, 140 [NL80211_ATTR_AUTH_TYPE] = { .type = NLA_U32 }, 141 [NL80211_ATTR_REASON_CODE] = { .type = NLA_U16 }, 142 [NL80211_ATTR_FREQ_FIXED] = { .type = NLA_FLAG }, 143 [NL80211_ATTR_TIMED_OUT] = { .type = NLA_FLAG }, 144 [NL80211_ATTR_USE_MFP] = { .type = NLA_U32 }, 145 [NL80211_ATTR_STA_FLAGS2] = { 146 .len = sizeof(struct nl80211_sta_flag_update), 147 }, 148 [NL80211_ATTR_CONTROL_PORT] = { .type = NLA_FLAG }, 149 [NL80211_ATTR_CONTROL_PORT_ETHERTYPE] = { .type = NLA_U16 }, 150 [NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT] = { .type = NLA_FLAG }, 151 [NL80211_ATTR_PRIVACY] = { .type = NLA_FLAG }, 152 [NL80211_ATTR_CIPHER_SUITE_GROUP] = { .type = NLA_U32 }, 153 [NL80211_ATTR_WPA_VERSIONS] = { .type = NLA_U32 }, 154 [NL80211_ATTR_PID] = { .type = NLA_U32 }, 155 [NL80211_ATTR_4ADDR] = { .type = NLA_U8 }, 156 [NL80211_ATTR_PMKID] = { .type = NLA_BINARY, 157 .len = WLAN_PMKID_LEN }, 158 [NL80211_ATTR_DURATION] = { .type = NLA_U32 }, 159 [NL80211_ATTR_COOKIE] = { .type = NLA_U64 }, 160 [NL80211_ATTR_TX_RATES] = { .type = NLA_NESTED }, 161 [NL80211_ATTR_FRAME] = { .type = NLA_BINARY, 162 .len = IEEE80211_MAX_DATA_LEN }, 163 [NL80211_ATTR_FRAME_MATCH] = { .type = NLA_BINARY, }, 164 [NL80211_ATTR_PS_STATE] = { .type = NLA_U32 }, 165 [NL80211_ATTR_CQM] = { .type = NLA_NESTED, }, 166 [NL80211_ATTR_LOCAL_STATE_CHANGE] = { .type = NLA_FLAG }, 167 [NL80211_ATTR_AP_ISOLATE] = { .type = NLA_U8 }, 168 [NL80211_ATTR_WIPHY_TX_POWER_SETTING] = { .type = NLA_U32 }, 169 [NL80211_ATTR_WIPHY_TX_POWER_LEVEL] = { .type = NLA_U32 }, 170 [NL80211_ATTR_FRAME_TYPE] = { .type = NLA_U16 }, 171 [NL80211_ATTR_WIPHY_ANTENNA_TX] = { .type = NLA_U32 }, 172 [NL80211_ATTR_WIPHY_ANTENNA_RX] = { .type = NLA_U32 }, 173 [NL80211_ATTR_MCAST_RATE] = { .type = NLA_U32 }, 174 [NL80211_ATTR_OFFCHANNEL_TX_OK] = { .type = NLA_FLAG }, 175 [NL80211_ATTR_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED }, 176 [NL80211_ATTR_WOWLAN_TRIGGERS] = { .type = NLA_NESTED }, 177 [NL80211_ATTR_STA_PLINK_STATE] = { .type = NLA_U8 }, 178 [NL80211_ATTR_SCHED_SCAN_INTERVAL] = { .type = NLA_U32 }, 179 [NL80211_ATTR_REKEY_DATA] = { .type = NLA_NESTED }, 180 [NL80211_ATTR_SCAN_SUPP_RATES] = { .type = NLA_NESTED }, 181 }; 182 183 /* policy for the key attributes */ 184 static const struct nla_policy nl80211_key_policy[NL80211_KEY_MAX + 1] = { 185 [NL80211_KEY_DATA] = { .type = NLA_BINARY, .len = WLAN_MAX_KEY_LEN }, 186 [NL80211_KEY_IDX] = { .type = NLA_U8 }, 187 [NL80211_KEY_CIPHER] = { .type = NLA_U32 }, 188 [NL80211_KEY_SEQ] = { .type = NLA_BINARY, .len = 8 }, 189 [NL80211_KEY_DEFAULT] = { .type = NLA_FLAG }, 190 [NL80211_KEY_DEFAULT_MGMT] = { .type = NLA_FLAG }, 191 [NL80211_KEY_TYPE] = { .type = NLA_U32 }, 192 [NL80211_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED }, 193 }; 194 195 /* policy for the key default flags */ 196 static const struct nla_policy 197 nl80211_key_default_policy[NUM_NL80211_KEY_DEFAULT_TYPES] = { 198 [NL80211_KEY_DEFAULT_TYPE_UNICAST] = { .type = NLA_FLAG }, 199 [NL80211_KEY_DEFAULT_TYPE_MULTICAST] = { .type = NLA_FLAG }, 200 }; 201 202 /* policy for WoWLAN attributes */ 203 static const struct nla_policy 204 nl80211_wowlan_policy[NUM_NL80211_WOWLAN_TRIG] = { 205 [NL80211_WOWLAN_TRIG_ANY] = { .type = NLA_FLAG }, 206 [NL80211_WOWLAN_TRIG_DISCONNECT] = { .type = NLA_FLAG }, 207 [NL80211_WOWLAN_TRIG_MAGIC_PKT] = { .type = NLA_FLAG }, 208 [NL80211_WOWLAN_TRIG_PKT_PATTERN] = { .type = NLA_NESTED }, 209 [NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE] = { .type = NLA_FLAG }, 210 [NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST] = { .type = NLA_FLAG }, 211 [NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE] = { .type = NLA_FLAG }, 212 [NL80211_WOWLAN_TRIG_RFKILL_RELEASE] = { .type = NLA_FLAG }, 213 }; 214 215 /* policy for GTK rekey offload attributes */ 216 static const struct nla_policy 217 nl80211_rekey_policy[NUM_NL80211_REKEY_DATA] = { 218 [NL80211_REKEY_DATA_KEK] = { .len = NL80211_KEK_LEN }, 219 [NL80211_REKEY_DATA_KCK] = { .len = NL80211_KCK_LEN }, 220 [NL80211_REKEY_DATA_REPLAY_CTR] = { .len = NL80211_REPLAY_CTR_LEN }, 221 }; 222 223 /* ifidx get helper */ 224 static int nl80211_get_ifidx(struct netlink_callback *cb) 225 { 226 int res; 227 228 res = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize, 229 nl80211_fam.attrbuf, nl80211_fam.maxattr, 230 nl80211_policy); 231 if (res) 232 return res; 233 234 if (!nl80211_fam.attrbuf[NL80211_ATTR_IFINDEX]) 235 return -EINVAL; 236 237 res = nla_get_u32(nl80211_fam.attrbuf[NL80211_ATTR_IFINDEX]); 238 if (!res) 239 return -EINVAL; 240 return res; 241 } 242 243 static int nl80211_prepare_netdev_dump(struct sk_buff *skb, 244 struct netlink_callback *cb, 245 struct cfg80211_registered_device **rdev, 246 struct net_device **dev) 247 { 248 int ifidx = cb->args[0]; 249 int err; 250 251 if (!ifidx) 252 ifidx = nl80211_get_ifidx(cb); 253 if (ifidx < 0) 254 return ifidx; 255 256 cb->args[0] = ifidx; 257 258 rtnl_lock(); 259 260 *dev = __dev_get_by_index(sock_net(skb->sk), ifidx); 261 if (!*dev) { 262 err = -ENODEV; 263 goto out_rtnl; 264 } 265 266 *rdev = cfg80211_get_dev_from_ifindex(sock_net(skb->sk), ifidx); 267 if (IS_ERR(*rdev)) { 268 err = PTR_ERR(*rdev); 269 goto out_rtnl; 270 } 271 272 return 0; 273 out_rtnl: 274 rtnl_unlock(); 275 return err; 276 } 277 278 static void nl80211_finish_netdev_dump(struct cfg80211_registered_device *rdev) 279 { 280 cfg80211_unlock_rdev(rdev); 281 rtnl_unlock(); 282 } 283 284 /* IE validation */ 285 static bool is_valid_ie_attr(const struct nlattr *attr) 286 { 287 const u8 *pos; 288 int len; 289 290 if (!attr) 291 return true; 292 293 pos = nla_data(attr); 294 len = nla_len(attr); 295 296 while (len) { 297 u8 elemlen; 298 299 if (len < 2) 300 return false; 301 len -= 2; 302 303 elemlen = pos[1]; 304 if (elemlen > len) 305 return false; 306 307 len -= elemlen; 308 pos += 2 + elemlen; 309 } 310 311 return true; 312 } 313 314 /* message building helper */ 315 static inline void *nl80211hdr_put(struct sk_buff *skb, u32 pid, u32 seq, 316 int flags, u8 cmd) 317 { 318 /* since there is no private header just add the generic one */ 319 return genlmsg_put(skb, pid, seq, &nl80211_fam, flags, cmd); 320 } 321 322 static int nl80211_msg_put_channel(struct sk_buff *msg, 323 struct ieee80211_channel *chan) 324 { 325 NLA_PUT_U32(msg, NL80211_FREQUENCY_ATTR_FREQ, 326 chan->center_freq); 327 328 if (chan->flags & IEEE80211_CHAN_DISABLED) 329 NLA_PUT_FLAG(msg, NL80211_FREQUENCY_ATTR_DISABLED); 330 if (chan->flags & IEEE80211_CHAN_PASSIVE_SCAN) 331 NLA_PUT_FLAG(msg, NL80211_FREQUENCY_ATTR_PASSIVE_SCAN); 332 if (chan->flags & IEEE80211_CHAN_NO_IBSS) 333 NLA_PUT_FLAG(msg, NL80211_FREQUENCY_ATTR_NO_IBSS); 334 if (chan->flags & IEEE80211_CHAN_RADAR) 335 NLA_PUT_FLAG(msg, NL80211_FREQUENCY_ATTR_RADAR); 336 337 NLA_PUT_U32(msg, NL80211_FREQUENCY_ATTR_MAX_TX_POWER, 338 DBM_TO_MBM(chan->max_power)); 339 340 return 0; 341 342 nla_put_failure: 343 return -ENOBUFS; 344 } 345 346 /* netlink command implementations */ 347 348 struct key_parse { 349 struct key_params p; 350 int idx; 351 int type; 352 bool def, defmgmt; 353 bool def_uni, def_multi; 354 }; 355 356 static int nl80211_parse_key_new(struct nlattr *key, struct key_parse *k) 357 { 358 struct nlattr *tb[NL80211_KEY_MAX + 1]; 359 int err = nla_parse_nested(tb, NL80211_KEY_MAX, key, 360 nl80211_key_policy); 361 if (err) 362 return err; 363 364 k->def = !!tb[NL80211_KEY_DEFAULT]; 365 k->defmgmt = !!tb[NL80211_KEY_DEFAULT_MGMT]; 366 367 if (k->def) { 368 k->def_uni = true; 369 k->def_multi = true; 370 } 371 if (k->defmgmt) 372 k->def_multi = true; 373 374 if (tb[NL80211_KEY_IDX]) 375 k->idx = nla_get_u8(tb[NL80211_KEY_IDX]); 376 377 if (tb[NL80211_KEY_DATA]) { 378 k->p.key = nla_data(tb[NL80211_KEY_DATA]); 379 k->p.key_len = nla_len(tb[NL80211_KEY_DATA]); 380 } 381 382 if (tb[NL80211_KEY_SEQ]) { 383 k->p.seq = nla_data(tb[NL80211_KEY_SEQ]); 384 k->p.seq_len = nla_len(tb[NL80211_KEY_SEQ]); 385 } 386 387 if (tb[NL80211_KEY_CIPHER]) 388 k->p.cipher = nla_get_u32(tb[NL80211_KEY_CIPHER]); 389 390 if (tb[NL80211_KEY_TYPE]) { 391 k->type = nla_get_u32(tb[NL80211_KEY_TYPE]); 392 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES) 393 return -EINVAL; 394 } 395 396 if (tb[NL80211_KEY_DEFAULT_TYPES]) { 397 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES]; 398 int err = nla_parse_nested(kdt, 399 NUM_NL80211_KEY_DEFAULT_TYPES - 1, 400 tb[NL80211_KEY_DEFAULT_TYPES], 401 nl80211_key_default_policy); 402 if (err) 403 return err; 404 405 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST]; 406 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST]; 407 } 408 409 return 0; 410 } 411 412 static int nl80211_parse_key_old(struct genl_info *info, struct key_parse *k) 413 { 414 if (info->attrs[NL80211_ATTR_KEY_DATA]) { 415 k->p.key = nla_data(info->attrs[NL80211_ATTR_KEY_DATA]); 416 k->p.key_len = nla_len(info->attrs[NL80211_ATTR_KEY_DATA]); 417 } 418 419 if (info->attrs[NL80211_ATTR_KEY_SEQ]) { 420 k->p.seq = nla_data(info->attrs[NL80211_ATTR_KEY_SEQ]); 421 k->p.seq_len = nla_len(info->attrs[NL80211_ATTR_KEY_SEQ]); 422 } 423 424 if (info->attrs[NL80211_ATTR_KEY_IDX]) 425 k->idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]); 426 427 if (info->attrs[NL80211_ATTR_KEY_CIPHER]) 428 k->p.cipher = nla_get_u32(info->attrs[NL80211_ATTR_KEY_CIPHER]); 429 430 k->def = !!info->attrs[NL80211_ATTR_KEY_DEFAULT]; 431 k->defmgmt = !!info->attrs[NL80211_ATTR_KEY_DEFAULT_MGMT]; 432 433 if (k->def) { 434 k->def_uni = true; 435 k->def_multi = true; 436 } 437 if (k->defmgmt) 438 k->def_multi = true; 439 440 if (info->attrs[NL80211_ATTR_KEY_TYPE]) { 441 k->type = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]); 442 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES) 443 return -EINVAL; 444 } 445 446 if (info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES]) { 447 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES]; 448 int err = nla_parse_nested( 449 kdt, NUM_NL80211_KEY_DEFAULT_TYPES - 1, 450 info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES], 451 nl80211_key_default_policy); 452 if (err) 453 return err; 454 455 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST]; 456 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST]; 457 } 458 459 return 0; 460 } 461 462 static int nl80211_parse_key(struct genl_info *info, struct key_parse *k) 463 { 464 int err; 465 466 memset(k, 0, sizeof(*k)); 467 k->idx = -1; 468 k->type = -1; 469 470 if (info->attrs[NL80211_ATTR_KEY]) 471 err = nl80211_parse_key_new(info->attrs[NL80211_ATTR_KEY], k); 472 else 473 err = nl80211_parse_key_old(info, k); 474 475 if (err) 476 return err; 477 478 if (k->def && k->defmgmt) 479 return -EINVAL; 480 481 if (k->defmgmt) { 482 if (k->def_uni || !k->def_multi) 483 return -EINVAL; 484 } 485 486 if (k->idx != -1) { 487 if (k->defmgmt) { 488 if (k->idx < 4 || k->idx > 5) 489 return -EINVAL; 490 } else if (k->def) { 491 if (k->idx < 0 || k->idx > 3) 492 return -EINVAL; 493 } else { 494 if (k->idx < 0 || k->idx > 5) 495 return -EINVAL; 496 } 497 } 498 499 return 0; 500 } 501 502 static struct cfg80211_cached_keys * 503 nl80211_parse_connkeys(struct cfg80211_registered_device *rdev, 504 struct nlattr *keys) 505 { 506 struct key_parse parse; 507 struct nlattr *key; 508 struct cfg80211_cached_keys *result; 509 int rem, err, def = 0; 510 511 result = kzalloc(sizeof(*result), GFP_KERNEL); 512 if (!result) 513 return ERR_PTR(-ENOMEM); 514 515 result->def = -1; 516 result->defmgmt = -1; 517 518 nla_for_each_nested(key, keys, rem) { 519 memset(&parse, 0, sizeof(parse)); 520 parse.idx = -1; 521 522 err = nl80211_parse_key_new(key, &parse); 523 if (err) 524 goto error; 525 err = -EINVAL; 526 if (!parse.p.key) 527 goto error; 528 if (parse.idx < 0 || parse.idx > 4) 529 goto error; 530 if (parse.def) { 531 if (def) 532 goto error; 533 def = 1; 534 result->def = parse.idx; 535 if (!parse.def_uni || !parse.def_multi) 536 goto error; 537 } else if (parse.defmgmt) 538 goto error; 539 err = cfg80211_validate_key_settings(rdev, &parse.p, 540 parse.idx, false, NULL); 541 if (err) 542 goto error; 543 result->params[parse.idx].cipher = parse.p.cipher; 544 result->params[parse.idx].key_len = parse.p.key_len; 545 result->params[parse.idx].key = result->data[parse.idx]; 546 memcpy(result->data[parse.idx], parse.p.key, parse.p.key_len); 547 } 548 549 return result; 550 error: 551 kfree(result); 552 return ERR_PTR(err); 553 } 554 555 static int nl80211_key_allowed(struct wireless_dev *wdev) 556 { 557 ASSERT_WDEV_LOCK(wdev); 558 559 switch (wdev->iftype) { 560 case NL80211_IFTYPE_AP: 561 case NL80211_IFTYPE_AP_VLAN: 562 case NL80211_IFTYPE_P2P_GO: 563 case NL80211_IFTYPE_MESH_POINT: 564 break; 565 case NL80211_IFTYPE_ADHOC: 566 if (!wdev->current_bss) 567 return -ENOLINK; 568 break; 569 case NL80211_IFTYPE_STATION: 570 case NL80211_IFTYPE_P2P_CLIENT: 571 if (wdev->sme_state != CFG80211_SME_CONNECTED) 572 return -ENOLINK; 573 break; 574 default: 575 return -EINVAL; 576 } 577 578 return 0; 579 } 580 581 static int nl80211_put_iftypes(struct sk_buff *msg, u32 attr, u16 ifmodes) 582 { 583 struct nlattr *nl_modes = nla_nest_start(msg, attr); 584 int i; 585 586 if (!nl_modes) 587 goto nla_put_failure; 588 589 i = 0; 590 while (ifmodes) { 591 if (ifmodes & 1) 592 NLA_PUT_FLAG(msg, i); 593 ifmodes >>= 1; 594 i++; 595 } 596 597 nla_nest_end(msg, nl_modes); 598 return 0; 599 600 nla_put_failure: 601 return -ENOBUFS; 602 } 603 604 static int nl80211_put_iface_combinations(struct wiphy *wiphy, 605 struct sk_buff *msg) 606 { 607 struct nlattr *nl_combis; 608 int i, j; 609 610 nl_combis = nla_nest_start(msg, 611 NL80211_ATTR_INTERFACE_COMBINATIONS); 612 if (!nl_combis) 613 goto nla_put_failure; 614 615 for (i = 0; i < wiphy->n_iface_combinations; i++) { 616 const struct ieee80211_iface_combination *c; 617 struct nlattr *nl_combi, *nl_limits; 618 619 c = &wiphy->iface_combinations[i]; 620 621 nl_combi = nla_nest_start(msg, i + 1); 622 if (!nl_combi) 623 goto nla_put_failure; 624 625 nl_limits = nla_nest_start(msg, NL80211_IFACE_COMB_LIMITS); 626 if (!nl_limits) 627 goto nla_put_failure; 628 629 for (j = 0; j < c->n_limits; j++) { 630 struct nlattr *nl_limit; 631 632 nl_limit = nla_nest_start(msg, j + 1); 633 if (!nl_limit) 634 goto nla_put_failure; 635 NLA_PUT_U32(msg, NL80211_IFACE_LIMIT_MAX, 636 c->limits[j].max); 637 if (nl80211_put_iftypes(msg, NL80211_IFACE_LIMIT_TYPES, 638 c->limits[j].types)) 639 goto nla_put_failure; 640 nla_nest_end(msg, nl_limit); 641 } 642 643 nla_nest_end(msg, nl_limits); 644 645 if (c->beacon_int_infra_match) 646 NLA_PUT_FLAG(msg, 647 NL80211_IFACE_COMB_STA_AP_BI_MATCH); 648 NLA_PUT_U32(msg, NL80211_IFACE_COMB_NUM_CHANNELS, 649 c->num_different_channels); 650 NLA_PUT_U32(msg, NL80211_IFACE_COMB_MAXNUM, 651 c->max_interfaces); 652 653 nla_nest_end(msg, nl_combi); 654 } 655 656 nla_nest_end(msg, nl_combis); 657 658 return 0; 659 nla_put_failure: 660 return -ENOBUFS; 661 } 662 663 static int nl80211_send_wiphy(struct sk_buff *msg, u32 pid, u32 seq, int flags, 664 struct cfg80211_registered_device *dev) 665 { 666 void *hdr; 667 struct nlattr *nl_bands, *nl_band; 668 struct nlattr *nl_freqs, *nl_freq; 669 struct nlattr *nl_rates, *nl_rate; 670 struct nlattr *nl_cmds; 671 enum ieee80211_band band; 672 struct ieee80211_channel *chan; 673 struct ieee80211_rate *rate; 674 int i; 675 const struct ieee80211_txrx_stypes *mgmt_stypes = 676 dev->wiphy.mgmt_stypes; 677 678 hdr = nl80211hdr_put(msg, pid, seq, flags, NL80211_CMD_NEW_WIPHY); 679 if (!hdr) 680 return -1; 681 682 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, dev->wiphy_idx); 683 NLA_PUT_STRING(msg, NL80211_ATTR_WIPHY_NAME, wiphy_name(&dev->wiphy)); 684 685 NLA_PUT_U32(msg, NL80211_ATTR_GENERATION, 686 cfg80211_rdev_list_generation); 687 688 NLA_PUT_U8(msg, NL80211_ATTR_WIPHY_RETRY_SHORT, 689 dev->wiphy.retry_short); 690 NLA_PUT_U8(msg, NL80211_ATTR_WIPHY_RETRY_LONG, 691 dev->wiphy.retry_long); 692 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD, 693 dev->wiphy.frag_threshold); 694 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD, 695 dev->wiphy.rts_threshold); 696 NLA_PUT_U8(msg, NL80211_ATTR_WIPHY_COVERAGE_CLASS, 697 dev->wiphy.coverage_class); 698 NLA_PUT_U8(msg, NL80211_ATTR_MAX_NUM_SCAN_SSIDS, 699 dev->wiphy.max_scan_ssids); 700 NLA_PUT_U8(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS, 701 dev->wiphy.max_sched_scan_ssids); 702 NLA_PUT_U16(msg, NL80211_ATTR_MAX_SCAN_IE_LEN, 703 dev->wiphy.max_scan_ie_len); 704 NLA_PUT_U16(msg, NL80211_ATTR_MAX_SCHED_SCAN_IE_LEN, 705 dev->wiphy.max_sched_scan_ie_len); 706 707 if (dev->wiphy.flags & WIPHY_FLAG_IBSS_RSN) 708 NLA_PUT_FLAG(msg, NL80211_ATTR_SUPPORT_IBSS_RSN); 709 if (dev->wiphy.flags & WIPHY_FLAG_MESH_AUTH) 710 NLA_PUT_FLAG(msg, NL80211_ATTR_SUPPORT_MESH_AUTH); 711 712 NLA_PUT(msg, NL80211_ATTR_CIPHER_SUITES, 713 sizeof(u32) * dev->wiphy.n_cipher_suites, 714 dev->wiphy.cipher_suites); 715 716 NLA_PUT_U8(msg, NL80211_ATTR_MAX_NUM_PMKIDS, 717 dev->wiphy.max_num_pmkids); 718 719 if (dev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) 720 NLA_PUT_FLAG(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE); 721 722 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_TX, 723 dev->wiphy.available_antennas_tx); 724 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_RX, 725 dev->wiphy.available_antennas_rx); 726 727 if ((dev->wiphy.available_antennas_tx || 728 dev->wiphy.available_antennas_rx) && dev->ops->get_antenna) { 729 u32 tx_ant = 0, rx_ant = 0; 730 int res; 731 res = dev->ops->get_antenna(&dev->wiphy, &tx_ant, &rx_ant); 732 if (!res) { 733 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_ANTENNA_TX, tx_ant); 734 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_ANTENNA_RX, rx_ant); 735 } 736 } 737 738 if (nl80211_put_iftypes(msg, NL80211_ATTR_SUPPORTED_IFTYPES, 739 dev->wiphy.interface_modes)) 740 goto nla_put_failure; 741 742 nl_bands = nla_nest_start(msg, NL80211_ATTR_WIPHY_BANDS); 743 if (!nl_bands) 744 goto nla_put_failure; 745 746 for (band = 0; band < IEEE80211_NUM_BANDS; band++) { 747 if (!dev->wiphy.bands[band]) 748 continue; 749 750 nl_band = nla_nest_start(msg, band); 751 if (!nl_band) 752 goto nla_put_failure; 753 754 /* add HT info */ 755 if (dev->wiphy.bands[band]->ht_cap.ht_supported) { 756 NLA_PUT(msg, NL80211_BAND_ATTR_HT_MCS_SET, 757 sizeof(dev->wiphy.bands[band]->ht_cap.mcs), 758 &dev->wiphy.bands[band]->ht_cap.mcs); 759 NLA_PUT_U16(msg, NL80211_BAND_ATTR_HT_CAPA, 760 dev->wiphy.bands[band]->ht_cap.cap); 761 NLA_PUT_U8(msg, NL80211_BAND_ATTR_HT_AMPDU_FACTOR, 762 dev->wiphy.bands[band]->ht_cap.ampdu_factor); 763 NLA_PUT_U8(msg, NL80211_BAND_ATTR_HT_AMPDU_DENSITY, 764 dev->wiphy.bands[band]->ht_cap.ampdu_density); 765 } 766 767 /* add frequencies */ 768 nl_freqs = nla_nest_start(msg, NL80211_BAND_ATTR_FREQS); 769 if (!nl_freqs) 770 goto nla_put_failure; 771 772 for (i = 0; i < dev->wiphy.bands[band]->n_channels; i++) { 773 nl_freq = nla_nest_start(msg, i); 774 if (!nl_freq) 775 goto nla_put_failure; 776 777 chan = &dev->wiphy.bands[band]->channels[i]; 778 779 if (nl80211_msg_put_channel(msg, chan)) 780 goto nla_put_failure; 781 782 nla_nest_end(msg, nl_freq); 783 } 784 785 nla_nest_end(msg, nl_freqs); 786 787 /* add bitrates */ 788 nl_rates = nla_nest_start(msg, NL80211_BAND_ATTR_RATES); 789 if (!nl_rates) 790 goto nla_put_failure; 791 792 for (i = 0; i < dev->wiphy.bands[band]->n_bitrates; i++) { 793 nl_rate = nla_nest_start(msg, i); 794 if (!nl_rate) 795 goto nla_put_failure; 796 797 rate = &dev->wiphy.bands[band]->bitrates[i]; 798 NLA_PUT_U32(msg, NL80211_BITRATE_ATTR_RATE, 799 rate->bitrate); 800 if (rate->flags & IEEE80211_RATE_SHORT_PREAMBLE) 801 NLA_PUT_FLAG(msg, 802 NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE); 803 804 nla_nest_end(msg, nl_rate); 805 } 806 807 nla_nest_end(msg, nl_rates); 808 809 nla_nest_end(msg, nl_band); 810 } 811 nla_nest_end(msg, nl_bands); 812 813 nl_cmds = nla_nest_start(msg, NL80211_ATTR_SUPPORTED_COMMANDS); 814 if (!nl_cmds) 815 goto nla_put_failure; 816 817 i = 0; 818 #define CMD(op, n) \ 819 do { \ 820 if (dev->ops->op) { \ 821 i++; \ 822 NLA_PUT_U32(msg, i, NL80211_CMD_ ## n); \ 823 } \ 824 } while (0) 825 826 CMD(add_virtual_intf, NEW_INTERFACE); 827 CMD(change_virtual_intf, SET_INTERFACE); 828 CMD(add_key, NEW_KEY); 829 CMD(add_beacon, NEW_BEACON); 830 CMD(add_station, NEW_STATION); 831 CMD(add_mpath, NEW_MPATH); 832 CMD(update_mesh_config, SET_MESH_CONFIG); 833 CMD(change_bss, SET_BSS); 834 CMD(auth, AUTHENTICATE); 835 CMD(assoc, ASSOCIATE); 836 CMD(deauth, DEAUTHENTICATE); 837 CMD(disassoc, DISASSOCIATE); 838 CMD(join_ibss, JOIN_IBSS); 839 CMD(join_mesh, JOIN_MESH); 840 CMD(set_pmksa, SET_PMKSA); 841 CMD(del_pmksa, DEL_PMKSA); 842 CMD(flush_pmksa, FLUSH_PMKSA); 843 CMD(remain_on_channel, REMAIN_ON_CHANNEL); 844 CMD(set_bitrate_mask, SET_TX_BITRATE_MASK); 845 CMD(mgmt_tx, FRAME); 846 CMD(mgmt_tx_cancel_wait, FRAME_WAIT_CANCEL); 847 if (dev->wiphy.flags & WIPHY_FLAG_NETNS_OK) { 848 i++; 849 NLA_PUT_U32(msg, i, NL80211_CMD_SET_WIPHY_NETNS); 850 } 851 CMD(set_channel, SET_CHANNEL); 852 CMD(set_wds_peer, SET_WDS_PEER); 853 if (dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) 854 CMD(sched_scan_start, START_SCHED_SCAN); 855 856 #undef CMD 857 858 if (dev->ops->connect || dev->ops->auth) { 859 i++; 860 NLA_PUT_U32(msg, i, NL80211_CMD_CONNECT); 861 } 862 863 if (dev->ops->disconnect || dev->ops->deauth) { 864 i++; 865 NLA_PUT_U32(msg, i, NL80211_CMD_DISCONNECT); 866 } 867 868 nla_nest_end(msg, nl_cmds); 869 870 if (dev->ops->remain_on_channel) 871 NLA_PUT_U32(msg, NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION, 872 dev->wiphy.max_remain_on_channel_duration); 873 874 /* for now at least assume all drivers have it */ 875 if (dev->ops->mgmt_tx) 876 NLA_PUT_FLAG(msg, NL80211_ATTR_OFFCHANNEL_TX_OK); 877 878 if (mgmt_stypes) { 879 u16 stypes; 880 struct nlattr *nl_ftypes, *nl_ifs; 881 enum nl80211_iftype ift; 882 883 nl_ifs = nla_nest_start(msg, NL80211_ATTR_TX_FRAME_TYPES); 884 if (!nl_ifs) 885 goto nla_put_failure; 886 887 for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) { 888 nl_ftypes = nla_nest_start(msg, ift); 889 if (!nl_ftypes) 890 goto nla_put_failure; 891 i = 0; 892 stypes = mgmt_stypes[ift].tx; 893 while (stypes) { 894 if (stypes & 1) 895 NLA_PUT_U16(msg, NL80211_ATTR_FRAME_TYPE, 896 (i << 4) | IEEE80211_FTYPE_MGMT); 897 stypes >>= 1; 898 i++; 899 } 900 nla_nest_end(msg, nl_ftypes); 901 } 902 903 nla_nest_end(msg, nl_ifs); 904 905 nl_ifs = nla_nest_start(msg, NL80211_ATTR_RX_FRAME_TYPES); 906 if (!nl_ifs) 907 goto nla_put_failure; 908 909 for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) { 910 nl_ftypes = nla_nest_start(msg, ift); 911 if (!nl_ftypes) 912 goto nla_put_failure; 913 i = 0; 914 stypes = mgmt_stypes[ift].rx; 915 while (stypes) { 916 if (stypes & 1) 917 NLA_PUT_U16(msg, NL80211_ATTR_FRAME_TYPE, 918 (i << 4) | IEEE80211_FTYPE_MGMT); 919 stypes >>= 1; 920 i++; 921 } 922 nla_nest_end(msg, nl_ftypes); 923 } 924 nla_nest_end(msg, nl_ifs); 925 } 926 927 if (dev->wiphy.wowlan.flags || dev->wiphy.wowlan.n_patterns) { 928 struct nlattr *nl_wowlan; 929 930 nl_wowlan = nla_nest_start(msg, 931 NL80211_ATTR_WOWLAN_TRIGGERS_SUPPORTED); 932 if (!nl_wowlan) 933 goto nla_put_failure; 934 935 if (dev->wiphy.wowlan.flags & WIPHY_WOWLAN_ANY) 936 NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_ANY); 937 if (dev->wiphy.wowlan.flags & WIPHY_WOWLAN_DISCONNECT) 938 NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_DISCONNECT); 939 if (dev->wiphy.wowlan.flags & WIPHY_WOWLAN_MAGIC_PKT) 940 NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT); 941 if (dev->wiphy.wowlan.flags & WIPHY_WOWLAN_SUPPORTS_GTK_REKEY) 942 NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED); 943 if (dev->wiphy.wowlan.flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE) 944 NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE); 945 if (dev->wiphy.wowlan.flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ) 946 NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST); 947 if (dev->wiphy.wowlan.flags & WIPHY_WOWLAN_4WAY_HANDSHAKE) 948 NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE); 949 if (dev->wiphy.wowlan.flags & WIPHY_WOWLAN_RFKILL_RELEASE) 950 NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE); 951 if (dev->wiphy.wowlan.n_patterns) { 952 struct nl80211_wowlan_pattern_support pat = { 953 .max_patterns = dev->wiphy.wowlan.n_patterns, 954 .min_pattern_len = 955 dev->wiphy.wowlan.pattern_min_len, 956 .max_pattern_len = 957 dev->wiphy.wowlan.pattern_max_len, 958 }; 959 NLA_PUT(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN, 960 sizeof(pat), &pat); 961 } 962 963 nla_nest_end(msg, nl_wowlan); 964 } 965 966 if (nl80211_put_iftypes(msg, NL80211_ATTR_SOFTWARE_IFTYPES, 967 dev->wiphy.software_iftypes)) 968 goto nla_put_failure; 969 970 if (nl80211_put_iface_combinations(&dev->wiphy, msg)) 971 goto nla_put_failure; 972 973 return genlmsg_end(msg, hdr); 974 975 nla_put_failure: 976 genlmsg_cancel(msg, hdr); 977 return -EMSGSIZE; 978 } 979 980 static int nl80211_dump_wiphy(struct sk_buff *skb, struct netlink_callback *cb) 981 { 982 int idx = 0; 983 int start = cb->args[0]; 984 struct cfg80211_registered_device *dev; 985 986 mutex_lock(&cfg80211_mutex); 987 list_for_each_entry(dev, &cfg80211_rdev_list, list) { 988 if (!net_eq(wiphy_net(&dev->wiphy), sock_net(skb->sk))) 989 continue; 990 if (++idx <= start) 991 continue; 992 if (nl80211_send_wiphy(skb, NETLINK_CB(cb->skb).pid, 993 cb->nlh->nlmsg_seq, NLM_F_MULTI, 994 dev) < 0) { 995 idx--; 996 break; 997 } 998 } 999 mutex_unlock(&cfg80211_mutex); 1000 1001 cb->args[0] = idx; 1002 1003 return skb->len; 1004 } 1005 1006 static int nl80211_get_wiphy(struct sk_buff *skb, struct genl_info *info) 1007 { 1008 struct sk_buff *msg; 1009 struct cfg80211_registered_device *dev = info->user_ptr[0]; 1010 1011 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 1012 if (!msg) 1013 return -ENOMEM; 1014 1015 if (nl80211_send_wiphy(msg, info->snd_pid, info->snd_seq, 0, dev) < 0) { 1016 nlmsg_free(msg); 1017 return -ENOBUFS; 1018 } 1019 1020 return genlmsg_reply(msg, info); 1021 } 1022 1023 static const struct nla_policy txq_params_policy[NL80211_TXQ_ATTR_MAX + 1] = { 1024 [NL80211_TXQ_ATTR_QUEUE] = { .type = NLA_U8 }, 1025 [NL80211_TXQ_ATTR_TXOP] = { .type = NLA_U16 }, 1026 [NL80211_TXQ_ATTR_CWMIN] = { .type = NLA_U16 }, 1027 [NL80211_TXQ_ATTR_CWMAX] = { .type = NLA_U16 }, 1028 [NL80211_TXQ_ATTR_AIFS] = { .type = NLA_U8 }, 1029 }; 1030 1031 static int parse_txq_params(struct nlattr *tb[], 1032 struct ieee80211_txq_params *txq_params) 1033 { 1034 if (!tb[NL80211_TXQ_ATTR_QUEUE] || !tb[NL80211_TXQ_ATTR_TXOP] || 1035 !tb[NL80211_TXQ_ATTR_CWMIN] || !tb[NL80211_TXQ_ATTR_CWMAX] || 1036 !tb[NL80211_TXQ_ATTR_AIFS]) 1037 return -EINVAL; 1038 1039 txq_params->queue = nla_get_u8(tb[NL80211_TXQ_ATTR_QUEUE]); 1040 txq_params->txop = nla_get_u16(tb[NL80211_TXQ_ATTR_TXOP]); 1041 txq_params->cwmin = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMIN]); 1042 txq_params->cwmax = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMAX]); 1043 txq_params->aifs = nla_get_u8(tb[NL80211_TXQ_ATTR_AIFS]); 1044 1045 return 0; 1046 } 1047 1048 static bool nl80211_can_set_dev_channel(struct wireless_dev *wdev) 1049 { 1050 /* 1051 * You can only set the channel explicitly for AP, mesh 1052 * and WDS type interfaces; all others have their channel 1053 * managed via their respective "establish a connection" 1054 * command (connect, join, ...) 1055 * 1056 * Monitors are special as they are normally slaved to 1057 * whatever else is going on, so they behave as though 1058 * you tried setting the wiphy channel itself. 1059 */ 1060 return !wdev || 1061 wdev->iftype == NL80211_IFTYPE_AP || 1062 wdev->iftype == NL80211_IFTYPE_WDS || 1063 wdev->iftype == NL80211_IFTYPE_MESH_POINT || 1064 wdev->iftype == NL80211_IFTYPE_MONITOR || 1065 wdev->iftype == NL80211_IFTYPE_P2P_GO; 1066 } 1067 1068 static int __nl80211_set_channel(struct cfg80211_registered_device *rdev, 1069 struct wireless_dev *wdev, 1070 struct genl_info *info) 1071 { 1072 enum nl80211_channel_type channel_type = NL80211_CHAN_NO_HT; 1073 u32 freq; 1074 int result; 1075 1076 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ]) 1077 return -EINVAL; 1078 1079 if (!nl80211_can_set_dev_channel(wdev)) 1080 return -EOPNOTSUPP; 1081 1082 if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) { 1083 channel_type = nla_get_u32(info->attrs[ 1084 NL80211_ATTR_WIPHY_CHANNEL_TYPE]); 1085 if (channel_type != NL80211_CHAN_NO_HT && 1086 channel_type != NL80211_CHAN_HT20 && 1087 channel_type != NL80211_CHAN_HT40PLUS && 1088 channel_type != NL80211_CHAN_HT40MINUS) 1089 return -EINVAL; 1090 } 1091 1092 freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]); 1093 1094 mutex_lock(&rdev->devlist_mtx); 1095 if (wdev) { 1096 wdev_lock(wdev); 1097 result = cfg80211_set_freq(rdev, wdev, freq, channel_type); 1098 wdev_unlock(wdev); 1099 } else { 1100 result = cfg80211_set_freq(rdev, NULL, freq, channel_type); 1101 } 1102 mutex_unlock(&rdev->devlist_mtx); 1103 1104 return result; 1105 } 1106 1107 static int nl80211_set_channel(struct sk_buff *skb, struct genl_info *info) 1108 { 1109 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 1110 struct net_device *netdev = info->user_ptr[1]; 1111 1112 return __nl80211_set_channel(rdev, netdev->ieee80211_ptr, info); 1113 } 1114 1115 static int nl80211_set_wds_peer(struct sk_buff *skb, struct genl_info *info) 1116 { 1117 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 1118 struct net_device *dev = info->user_ptr[1]; 1119 struct wireless_dev *wdev = dev->ieee80211_ptr; 1120 const u8 *bssid; 1121 1122 if (!info->attrs[NL80211_ATTR_MAC]) 1123 return -EINVAL; 1124 1125 if (netif_running(dev)) 1126 return -EBUSY; 1127 1128 if (!rdev->ops->set_wds_peer) 1129 return -EOPNOTSUPP; 1130 1131 if (wdev->iftype != NL80211_IFTYPE_WDS) 1132 return -EOPNOTSUPP; 1133 1134 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]); 1135 return rdev->ops->set_wds_peer(wdev->wiphy, dev, bssid); 1136 } 1137 1138 1139 static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info) 1140 { 1141 struct cfg80211_registered_device *rdev; 1142 struct net_device *netdev = NULL; 1143 struct wireless_dev *wdev; 1144 int result = 0, rem_txq_params = 0; 1145 struct nlattr *nl_txq_params; 1146 u32 changed; 1147 u8 retry_short = 0, retry_long = 0; 1148 u32 frag_threshold = 0, rts_threshold = 0; 1149 u8 coverage_class = 0; 1150 1151 /* 1152 * Try to find the wiphy and netdev. Normally this 1153 * function shouldn't need the netdev, but this is 1154 * done for backward compatibility -- previously 1155 * setting the channel was done per wiphy, but now 1156 * it is per netdev. Previous userland like hostapd 1157 * also passed a netdev to set_wiphy, so that it is 1158 * possible to let that go to the right netdev! 1159 */ 1160 mutex_lock(&cfg80211_mutex); 1161 1162 if (info->attrs[NL80211_ATTR_IFINDEX]) { 1163 int ifindex = nla_get_u32(info->attrs[NL80211_ATTR_IFINDEX]); 1164 1165 netdev = dev_get_by_index(genl_info_net(info), ifindex); 1166 if (netdev && netdev->ieee80211_ptr) { 1167 rdev = wiphy_to_dev(netdev->ieee80211_ptr->wiphy); 1168 mutex_lock(&rdev->mtx); 1169 } else 1170 netdev = NULL; 1171 } 1172 1173 if (!netdev) { 1174 rdev = __cfg80211_rdev_from_info(info); 1175 if (IS_ERR(rdev)) { 1176 mutex_unlock(&cfg80211_mutex); 1177 return PTR_ERR(rdev); 1178 } 1179 wdev = NULL; 1180 netdev = NULL; 1181 result = 0; 1182 1183 mutex_lock(&rdev->mtx); 1184 } else if (netif_running(netdev) && 1185 nl80211_can_set_dev_channel(netdev->ieee80211_ptr)) 1186 wdev = netdev->ieee80211_ptr; 1187 else 1188 wdev = NULL; 1189 1190 /* 1191 * end workaround code, by now the rdev is available 1192 * and locked, and wdev may or may not be NULL. 1193 */ 1194 1195 if (info->attrs[NL80211_ATTR_WIPHY_NAME]) 1196 result = cfg80211_dev_rename( 1197 rdev, nla_data(info->attrs[NL80211_ATTR_WIPHY_NAME])); 1198 1199 mutex_unlock(&cfg80211_mutex); 1200 1201 if (result) 1202 goto bad_res; 1203 1204 if (info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS]) { 1205 struct ieee80211_txq_params txq_params; 1206 struct nlattr *tb[NL80211_TXQ_ATTR_MAX + 1]; 1207 1208 if (!rdev->ops->set_txq_params) { 1209 result = -EOPNOTSUPP; 1210 goto bad_res; 1211 } 1212 1213 nla_for_each_nested(nl_txq_params, 1214 info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS], 1215 rem_txq_params) { 1216 nla_parse(tb, NL80211_TXQ_ATTR_MAX, 1217 nla_data(nl_txq_params), 1218 nla_len(nl_txq_params), 1219 txq_params_policy); 1220 result = parse_txq_params(tb, &txq_params); 1221 if (result) 1222 goto bad_res; 1223 1224 result = rdev->ops->set_txq_params(&rdev->wiphy, 1225 &txq_params); 1226 if (result) 1227 goto bad_res; 1228 } 1229 } 1230 1231 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) { 1232 result = __nl80211_set_channel(rdev, wdev, info); 1233 if (result) 1234 goto bad_res; 1235 } 1236 1237 if (info->attrs[NL80211_ATTR_WIPHY_TX_POWER_SETTING]) { 1238 enum nl80211_tx_power_setting type; 1239 int idx, mbm = 0; 1240 1241 if (!rdev->ops->set_tx_power) { 1242 result = -EOPNOTSUPP; 1243 goto bad_res; 1244 } 1245 1246 idx = NL80211_ATTR_WIPHY_TX_POWER_SETTING; 1247 type = nla_get_u32(info->attrs[idx]); 1248 1249 if (!info->attrs[NL80211_ATTR_WIPHY_TX_POWER_LEVEL] && 1250 (type != NL80211_TX_POWER_AUTOMATIC)) { 1251 result = -EINVAL; 1252 goto bad_res; 1253 } 1254 1255 if (type != NL80211_TX_POWER_AUTOMATIC) { 1256 idx = NL80211_ATTR_WIPHY_TX_POWER_LEVEL; 1257 mbm = nla_get_u32(info->attrs[idx]); 1258 } 1259 1260 result = rdev->ops->set_tx_power(&rdev->wiphy, type, mbm); 1261 if (result) 1262 goto bad_res; 1263 } 1264 1265 if (info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX] && 1266 info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]) { 1267 u32 tx_ant, rx_ant; 1268 if ((!rdev->wiphy.available_antennas_tx && 1269 !rdev->wiphy.available_antennas_rx) || 1270 !rdev->ops->set_antenna) { 1271 result = -EOPNOTSUPP; 1272 goto bad_res; 1273 } 1274 1275 tx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX]); 1276 rx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]); 1277 1278 /* reject antenna configurations which don't match the 1279 * available antenna masks, except for the "all" mask */ 1280 if ((~tx_ant && (tx_ant & ~rdev->wiphy.available_antennas_tx)) || 1281 (~rx_ant && (rx_ant & ~rdev->wiphy.available_antennas_rx))) { 1282 result = -EINVAL; 1283 goto bad_res; 1284 } 1285 1286 tx_ant = tx_ant & rdev->wiphy.available_antennas_tx; 1287 rx_ant = rx_ant & rdev->wiphy.available_antennas_rx; 1288 1289 result = rdev->ops->set_antenna(&rdev->wiphy, tx_ant, rx_ant); 1290 if (result) 1291 goto bad_res; 1292 } 1293 1294 changed = 0; 1295 1296 if (info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]) { 1297 retry_short = nla_get_u8( 1298 info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]); 1299 if (retry_short == 0) { 1300 result = -EINVAL; 1301 goto bad_res; 1302 } 1303 changed |= WIPHY_PARAM_RETRY_SHORT; 1304 } 1305 1306 if (info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]) { 1307 retry_long = nla_get_u8( 1308 info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]); 1309 if (retry_long == 0) { 1310 result = -EINVAL; 1311 goto bad_res; 1312 } 1313 changed |= WIPHY_PARAM_RETRY_LONG; 1314 } 1315 1316 if (info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]) { 1317 frag_threshold = nla_get_u32( 1318 info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]); 1319 if (frag_threshold < 256) { 1320 result = -EINVAL; 1321 goto bad_res; 1322 } 1323 if (frag_threshold != (u32) -1) { 1324 /* 1325 * Fragments (apart from the last one) are required to 1326 * have even length. Make the fragmentation code 1327 * simpler by stripping LSB should someone try to use 1328 * odd threshold value. 1329 */ 1330 frag_threshold &= ~0x1; 1331 } 1332 changed |= WIPHY_PARAM_FRAG_THRESHOLD; 1333 } 1334 1335 if (info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]) { 1336 rts_threshold = nla_get_u32( 1337 info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]); 1338 changed |= WIPHY_PARAM_RTS_THRESHOLD; 1339 } 1340 1341 if (info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]) { 1342 coverage_class = nla_get_u8( 1343 info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]); 1344 changed |= WIPHY_PARAM_COVERAGE_CLASS; 1345 } 1346 1347 if (changed) { 1348 u8 old_retry_short, old_retry_long; 1349 u32 old_frag_threshold, old_rts_threshold; 1350 u8 old_coverage_class; 1351 1352 if (!rdev->ops->set_wiphy_params) { 1353 result = -EOPNOTSUPP; 1354 goto bad_res; 1355 } 1356 1357 old_retry_short = rdev->wiphy.retry_short; 1358 old_retry_long = rdev->wiphy.retry_long; 1359 old_frag_threshold = rdev->wiphy.frag_threshold; 1360 old_rts_threshold = rdev->wiphy.rts_threshold; 1361 old_coverage_class = rdev->wiphy.coverage_class; 1362 1363 if (changed & WIPHY_PARAM_RETRY_SHORT) 1364 rdev->wiphy.retry_short = retry_short; 1365 if (changed & WIPHY_PARAM_RETRY_LONG) 1366 rdev->wiphy.retry_long = retry_long; 1367 if (changed & WIPHY_PARAM_FRAG_THRESHOLD) 1368 rdev->wiphy.frag_threshold = frag_threshold; 1369 if (changed & WIPHY_PARAM_RTS_THRESHOLD) 1370 rdev->wiphy.rts_threshold = rts_threshold; 1371 if (changed & WIPHY_PARAM_COVERAGE_CLASS) 1372 rdev->wiphy.coverage_class = coverage_class; 1373 1374 result = rdev->ops->set_wiphy_params(&rdev->wiphy, changed); 1375 if (result) { 1376 rdev->wiphy.retry_short = old_retry_short; 1377 rdev->wiphy.retry_long = old_retry_long; 1378 rdev->wiphy.frag_threshold = old_frag_threshold; 1379 rdev->wiphy.rts_threshold = old_rts_threshold; 1380 rdev->wiphy.coverage_class = old_coverage_class; 1381 } 1382 } 1383 1384 bad_res: 1385 mutex_unlock(&rdev->mtx); 1386 if (netdev) 1387 dev_put(netdev); 1388 return result; 1389 } 1390 1391 1392 static int nl80211_send_iface(struct sk_buff *msg, u32 pid, u32 seq, int flags, 1393 struct cfg80211_registered_device *rdev, 1394 struct net_device *dev) 1395 { 1396 void *hdr; 1397 1398 hdr = nl80211hdr_put(msg, pid, seq, flags, NL80211_CMD_NEW_INTERFACE); 1399 if (!hdr) 1400 return -1; 1401 1402 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex); 1403 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx); 1404 NLA_PUT_STRING(msg, NL80211_ATTR_IFNAME, dev->name); 1405 NLA_PUT_U32(msg, NL80211_ATTR_IFTYPE, dev->ieee80211_ptr->iftype); 1406 1407 NLA_PUT_U32(msg, NL80211_ATTR_GENERATION, 1408 rdev->devlist_generation ^ 1409 (cfg80211_rdev_list_generation << 2)); 1410 1411 return genlmsg_end(msg, hdr); 1412 1413 nla_put_failure: 1414 genlmsg_cancel(msg, hdr); 1415 return -EMSGSIZE; 1416 } 1417 1418 static int nl80211_dump_interface(struct sk_buff *skb, struct netlink_callback *cb) 1419 { 1420 int wp_idx = 0; 1421 int if_idx = 0; 1422 int wp_start = cb->args[0]; 1423 int if_start = cb->args[1]; 1424 struct cfg80211_registered_device *rdev; 1425 struct wireless_dev *wdev; 1426 1427 mutex_lock(&cfg80211_mutex); 1428 list_for_each_entry(rdev, &cfg80211_rdev_list, list) { 1429 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk))) 1430 continue; 1431 if (wp_idx < wp_start) { 1432 wp_idx++; 1433 continue; 1434 } 1435 if_idx = 0; 1436 1437 mutex_lock(&rdev->devlist_mtx); 1438 list_for_each_entry(wdev, &rdev->netdev_list, list) { 1439 if (if_idx < if_start) { 1440 if_idx++; 1441 continue; 1442 } 1443 if (nl80211_send_iface(skb, NETLINK_CB(cb->skb).pid, 1444 cb->nlh->nlmsg_seq, NLM_F_MULTI, 1445 rdev, wdev->netdev) < 0) { 1446 mutex_unlock(&rdev->devlist_mtx); 1447 goto out; 1448 } 1449 if_idx++; 1450 } 1451 mutex_unlock(&rdev->devlist_mtx); 1452 1453 wp_idx++; 1454 } 1455 out: 1456 mutex_unlock(&cfg80211_mutex); 1457 1458 cb->args[0] = wp_idx; 1459 cb->args[1] = if_idx; 1460 1461 return skb->len; 1462 } 1463 1464 static int nl80211_get_interface(struct sk_buff *skb, struct genl_info *info) 1465 { 1466 struct sk_buff *msg; 1467 struct cfg80211_registered_device *dev = info->user_ptr[0]; 1468 struct net_device *netdev = info->user_ptr[1]; 1469 1470 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 1471 if (!msg) 1472 return -ENOMEM; 1473 1474 if (nl80211_send_iface(msg, info->snd_pid, info->snd_seq, 0, 1475 dev, netdev) < 0) { 1476 nlmsg_free(msg); 1477 return -ENOBUFS; 1478 } 1479 1480 return genlmsg_reply(msg, info); 1481 } 1482 1483 static const struct nla_policy mntr_flags_policy[NL80211_MNTR_FLAG_MAX + 1] = { 1484 [NL80211_MNTR_FLAG_FCSFAIL] = { .type = NLA_FLAG }, 1485 [NL80211_MNTR_FLAG_PLCPFAIL] = { .type = NLA_FLAG }, 1486 [NL80211_MNTR_FLAG_CONTROL] = { .type = NLA_FLAG }, 1487 [NL80211_MNTR_FLAG_OTHER_BSS] = { .type = NLA_FLAG }, 1488 [NL80211_MNTR_FLAG_COOK_FRAMES] = { .type = NLA_FLAG }, 1489 }; 1490 1491 static int parse_monitor_flags(struct nlattr *nla, u32 *mntrflags) 1492 { 1493 struct nlattr *flags[NL80211_MNTR_FLAG_MAX + 1]; 1494 int flag; 1495 1496 *mntrflags = 0; 1497 1498 if (!nla) 1499 return -EINVAL; 1500 1501 if (nla_parse_nested(flags, NL80211_MNTR_FLAG_MAX, 1502 nla, mntr_flags_policy)) 1503 return -EINVAL; 1504 1505 for (flag = 1; flag <= NL80211_MNTR_FLAG_MAX; flag++) 1506 if (flags[flag]) 1507 *mntrflags |= (1<<flag); 1508 1509 return 0; 1510 } 1511 1512 static int nl80211_valid_4addr(struct cfg80211_registered_device *rdev, 1513 struct net_device *netdev, u8 use_4addr, 1514 enum nl80211_iftype iftype) 1515 { 1516 if (!use_4addr) { 1517 if (netdev && (netdev->priv_flags & IFF_BRIDGE_PORT)) 1518 return -EBUSY; 1519 return 0; 1520 } 1521 1522 switch (iftype) { 1523 case NL80211_IFTYPE_AP_VLAN: 1524 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_AP) 1525 return 0; 1526 break; 1527 case NL80211_IFTYPE_STATION: 1528 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_STATION) 1529 return 0; 1530 break; 1531 default: 1532 break; 1533 } 1534 1535 return -EOPNOTSUPP; 1536 } 1537 1538 static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info) 1539 { 1540 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 1541 struct vif_params params; 1542 int err; 1543 enum nl80211_iftype otype, ntype; 1544 struct net_device *dev = info->user_ptr[1]; 1545 u32 _flags, *flags = NULL; 1546 bool change = false; 1547 1548 memset(¶ms, 0, sizeof(params)); 1549 1550 otype = ntype = dev->ieee80211_ptr->iftype; 1551 1552 if (info->attrs[NL80211_ATTR_IFTYPE]) { 1553 ntype = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]); 1554 if (otype != ntype) 1555 change = true; 1556 if (ntype > NL80211_IFTYPE_MAX) 1557 return -EINVAL; 1558 } 1559 1560 if (info->attrs[NL80211_ATTR_MESH_ID]) { 1561 struct wireless_dev *wdev = dev->ieee80211_ptr; 1562 1563 if (ntype != NL80211_IFTYPE_MESH_POINT) 1564 return -EINVAL; 1565 if (netif_running(dev)) 1566 return -EBUSY; 1567 1568 wdev_lock(wdev); 1569 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN != 1570 IEEE80211_MAX_MESH_ID_LEN); 1571 wdev->mesh_id_up_len = 1572 nla_len(info->attrs[NL80211_ATTR_MESH_ID]); 1573 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]), 1574 wdev->mesh_id_up_len); 1575 wdev_unlock(wdev); 1576 } 1577 1578 if (info->attrs[NL80211_ATTR_4ADDR]) { 1579 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]); 1580 change = true; 1581 err = nl80211_valid_4addr(rdev, dev, params.use_4addr, ntype); 1582 if (err) 1583 return err; 1584 } else { 1585 params.use_4addr = -1; 1586 } 1587 1588 if (info->attrs[NL80211_ATTR_MNTR_FLAGS]) { 1589 if (ntype != NL80211_IFTYPE_MONITOR) 1590 return -EINVAL; 1591 err = parse_monitor_flags(info->attrs[NL80211_ATTR_MNTR_FLAGS], 1592 &_flags); 1593 if (err) 1594 return err; 1595 1596 flags = &_flags; 1597 change = true; 1598 } 1599 1600 if (change) 1601 err = cfg80211_change_iface(rdev, dev, ntype, flags, ¶ms); 1602 else 1603 err = 0; 1604 1605 if (!err && params.use_4addr != -1) 1606 dev->ieee80211_ptr->use_4addr = params.use_4addr; 1607 1608 return err; 1609 } 1610 1611 static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info) 1612 { 1613 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 1614 struct vif_params params; 1615 struct net_device *dev; 1616 int err; 1617 enum nl80211_iftype type = NL80211_IFTYPE_UNSPECIFIED; 1618 u32 flags; 1619 1620 memset(¶ms, 0, sizeof(params)); 1621 1622 if (!info->attrs[NL80211_ATTR_IFNAME]) 1623 return -EINVAL; 1624 1625 if (info->attrs[NL80211_ATTR_IFTYPE]) { 1626 type = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]); 1627 if (type > NL80211_IFTYPE_MAX) 1628 return -EINVAL; 1629 } 1630 1631 if (!rdev->ops->add_virtual_intf || 1632 !(rdev->wiphy.interface_modes & (1 << type))) 1633 return -EOPNOTSUPP; 1634 1635 if (info->attrs[NL80211_ATTR_4ADDR]) { 1636 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]); 1637 err = nl80211_valid_4addr(rdev, NULL, params.use_4addr, type); 1638 if (err) 1639 return err; 1640 } 1641 1642 err = parse_monitor_flags(type == NL80211_IFTYPE_MONITOR ? 1643 info->attrs[NL80211_ATTR_MNTR_FLAGS] : NULL, 1644 &flags); 1645 dev = rdev->ops->add_virtual_intf(&rdev->wiphy, 1646 nla_data(info->attrs[NL80211_ATTR_IFNAME]), 1647 type, err ? NULL : &flags, ¶ms); 1648 if (IS_ERR(dev)) 1649 return PTR_ERR(dev); 1650 1651 if (type == NL80211_IFTYPE_MESH_POINT && 1652 info->attrs[NL80211_ATTR_MESH_ID]) { 1653 struct wireless_dev *wdev = dev->ieee80211_ptr; 1654 1655 wdev_lock(wdev); 1656 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN != 1657 IEEE80211_MAX_MESH_ID_LEN); 1658 wdev->mesh_id_up_len = 1659 nla_len(info->attrs[NL80211_ATTR_MESH_ID]); 1660 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]), 1661 wdev->mesh_id_up_len); 1662 wdev_unlock(wdev); 1663 } 1664 1665 return 0; 1666 } 1667 1668 static int nl80211_del_interface(struct sk_buff *skb, struct genl_info *info) 1669 { 1670 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 1671 struct net_device *dev = info->user_ptr[1]; 1672 1673 if (!rdev->ops->del_virtual_intf) 1674 return -EOPNOTSUPP; 1675 1676 return rdev->ops->del_virtual_intf(&rdev->wiphy, dev); 1677 } 1678 1679 struct get_key_cookie { 1680 struct sk_buff *msg; 1681 int error; 1682 int idx; 1683 }; 1684 1685 static void get_key_callback(void *c, struct key_params *params) 1686 { 1687 struct nlattr *key; 1688 struct get_key_cookie *cookie = c; 1689 1690 if (params->key) 1691 NLA_PUT(cookie->msg, NL80211_ATTR_KEY_DATA, 1692 params->key_len, params->key); 1693 1694 if (params->seq) 1695 NLA_PUT(cookie->msg, NL80211_ATTR_KEY_SEQ, 1696 params->seq_len, params->seq); 1697 1698 if (params->cipher) 1699 NLA_PUT_U32(cookie->msg, NL80211_ATTR_KEY_CIPHER, 1700 params->cipher); 1701 1702 key = nla_nest_start(cookie->msg, NL80211_ATTR_KEY); 1703 if (!key) 1704 goto nla_put_failure; 1705 1706 if (params->key) 1707 NLA_PUT(cookie->msg, NL80211_KEY_DATA, 1708 params->key_len, params->key); 1709 1710 if (params->seq) 1711 NLA_PUT(cookie->msg, NL80211_KEY_SEQ, 1712 params->seq_len, params->seq); 1713 1714 if (params->cipher) 1715 NLA_PUT_U32(cookie->msg, NL80211_KEY_CIPHER, 1716 params->cipher); 1717 1718 NLA_PUT_U8(cookie->msg, NL80211_ATTR_KEY_IDX, cookie->idx); 1719 1720 nla_nest_end(cookie->msg, key); 1721 1722 return; 1723 nla_put_failure: 1724 cookie->error = 1; 1725 } 1726 1727 static int nl80211_get_key(struct sk_buff *skb, struct genl_info *info) 1728 { 1729 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 1730 int err; 1731 struct net_device *dev = info->user_ptr[1]; 1732 u8 key_idx = 0; 1733 const u8 *mac_addr = NULL; 1734 bool pairwise; 1735 struct get_key_cookie cookie = { 1736 .error = 0, 1737 }; 1738 void *hdr; 1739 struct sk_buff *msg; 1740 1741 if (info->attrs[NL80211_ATTR_KEY_IDX]) 1742 key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]); 1743 1744 if (key_idx > 5) 1745 return -EINVAL; 1746 1747 if (info->attrs[NL80211_ATTR_MAC]) 1748 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]); 1749 1750 pairwise = !!mac_addr; 1751 if (info->attrs[NL80211_ATTR_KEY_TYPE]) { 1752 u32 kt = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]); 1753 if (kt >= NUM_NL80211_KEYTYPES) 1754 return -EINVAL; 1755 if (kt != NL80211_KEYTYPE_GROUP && 1756 kt != NL80211_KEYTYPE_PAIRWISE) 1757 return -EINVAL; 1758 pairwise = kt == NL80211_KEYTYPE_PAIRWISE; 1759 } 1760 1761 if (!rdev->ops->get_key) 1762 return -EOPNOTSUPP; 1763 1764 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 1765 if (!msg) 1766 return -ENOMEM; 1767 1768 hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0, 1769 NL80211_CMD_NEW_KEY); 1770 if (IS_ERR(hdr)) 1771 return PTR_ERR(hdr); 1772 1773 cookie.msg = msg; 1774 cookie.idx = key_idx; 1775 1776 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex); 1777 NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, key_idx); 1778 if (mac_addr) 1779 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr); 1780 1781 if (pairwise && mac_addr && 1782 !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN)) 1783 return -ENOENT; 1784 1785 err = rdev->ops->get_key(&rdev->wiphy, dev, key_idx, pairwise, 1786 mac_addr, &cookie, get_key_callback); 1787 1788 if (err) 1789 goto free_msg; 1790 1791 if (cookie.error) 1792 goto nla_put_failure; 1793 1794 genlmsg_end(msg, hdr); 1795 return genlmsg_reply(msg, info); 1796 1797 nla_put_failure: 1798 err = -ENOBUFS; 1799 free_msg: 1800 nlmsg_free(msg); 1801 return err; 1802 } 1803 1804 static int nl80211_set_key(struct sk_buff *skb, struct genl_info *info) 1805 { 1806 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 1807 struct key_parse key; 1808 int err; 1809 struct net_device *dev = info->user_ptr[1]; 1810 1811 err = nl80211_parse_key(info, &key); 1812 if (err) 1813 return err; 1814 1815 if (key.idx < 0) 1816 return -EINVAL; 1817 1818 /* only support setting default key */ 1819 if (!key.def && !key.defmgmt) 1820 return -EINVAL; 1821 1822 wdev_lock(dev->ieee80211_ptr); 1823 1824 if (key.def) { 1825 if (!rdev->ops->set_default_key) { 1826 err = -EOPNOTSUPP; 1827 goto out; 1828 } 1829 1830 err = nl80211_key_allowed(dev->ieee80211_ptr); 1831 if (err) 1832 goto out; 1833 1834 err = rdev->ops->set_default_key(&rdev->wiphy, dev, key.idx, 1835 key.def_uni, key.def_multi); 1836 1837 if (err) 1838 goto out; 1839 1840 #ifdef CONFIG_CFG80211_WEXT 1841 dev->ieee80211_ptr->wext.default_key = key.idx; 1842 #endif 1843 } else { 1844 if (key.def_uni || !key.def_multi) { 1845 err = -EINVAL; 1846 goto out; 1847 } 1848 1849 if (!rdev->ops->set_default_mgmt_key) { 1850 err = -EOPNOTSUPP; 1851 goto out; 1852 } 1853 1854 err = nl80211_key_allowed(dev->ieee80211_ptr); 1855 if (err) 1856 goto out; 1857 1858 err = rdev->ops->set_default_mgmt_key(&rdev->wiphy, 1859 dev, key.idx); 1860 if (err) 1861 goto out; 1862 1863 #ifdef CONFIG_CFG80211_WEXT 1864 dev->ieee80211_ptr->wext.default_mgmt_key = key.idx; 1865 #endif 1866 } 1867 1868 out: 1869 wdev_unlock(dev->ieee80211_ptr); 1870 1871 return err; 1872 } 1873 1874 static int nl80211_new_key(struct sk_buff *skb, struct genl_info *info) 1875 { 1876 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 1877 int err; 1878 struct net_device *dev = info->user_ptr[1]; 1879 struct key_parse key; 1880 const u8 *mac_addr = NULL; 1881 1882 err = nl80211_parse_key(info, &key); 1883 if (err) 1884 return err; 1885 1886 if (!key.p.key) 1887 return -EINVAL; 1888 1889 if (info->attrs[NL80211_ATTR_MAC]) 1890 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]); 1891 1892 if (key.type == -1) { 1893 if (mac_addr) 1894 key.type = NL80211_KEYTYPE_PAIRWISE; 1895 else 1896 key.type = NL80211_KEYTYPE_GROUP; 1897 } 1898 1899 /* for now */ 1900 if (key.type != NL80211_KEYTYPE_PAIRWISE && 1901 key.type != NL80211_KEYTYPE_GROUP) 1902 return -EINVAL; 1903 1904 if (!rdev->ops->add_key) 1905 return -EOPNOTSUPP; 1906 1907 if (cfg80211_validate_key_settings(rdev, &key.p, key.idx, 1908 key.type == NL80211_KEYTYPE_PAIRWISE, 1909 mac_addr)) 1910 return -EINVAL; 1911 1912 wdev_lock(dev->ieee80211_ptr); 1913 err = nl80211_key_allowed(dev->ieee80211_ptr); 1914 if (!err) 1915 err = rdev->ops->add_key(&rdev->wiphy, dev, key.idx, 1916 key.type == NL80211_KEYTYPE_PAIRWISE, 1917 mac_addr, &key.p); 1918 wdev_unlock(dev->ieee80211_ptr); 1919 1920 return err; 1921 } 1922 1923 static int nl80211_del_key(struct sk_buff *skb, struct genl_info *info) 1924 { 1925 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 1926 int err; 1927 struct net_device *dev = info->user_ptr[1]; 1928 u8 *mac_addr = NULL; 1929 struct key_parse key; 1930 1931 err = nl80211_parse_key(info, &key); 1932 if (err) 1933 return err; 1934 1935 if (info->attrs[NL80211_ATTR_MAC]) 1936 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]); 1937 1938 if (key.type == -1) { 1939 if (mac_addr) 1940 key.type = NL80211_KEYTYPE_PAIRWISE; 1941 else 1942 key.type = NL80211_KEYTYPE_GROUP; 1943 } 1944 1945 /* for now */ 1946 if (key.type != NL80211_KEYTYPE_PAIRWISE && 1947 key.type != NL80211_KEYTYPE_GROUP) 1948 return -EINVAL; 1949 1950 if (!rdev->ops->del_key) 1951 return -EOPNOTSUPP; 1952 1953 wdev_lock(dev->ieee80211_ptr); 1954 err = nl80211_key_allowed(dev->ieee80211_ptr); 1955 1956 if (key.type == NL80211_KEYTYPE_PAIRWISE && mac_addr && 1957 !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN)) 1958 err = -ENOENT; 1959 1960 if (!err) 1961 err = rdev->ops->del_key(&rdev->wiphy, dev, key.idx, 1962 key.type == NL80211_KEYTYPE_PAIRWISE, 1963 mac_addr); 1964 1965 #ifdef CONFIG_CFG80211_WEXT 1966 if (!err) { 1967 if (key.idx == dev->ieee80211_ptr->wext.default_key) 1968 dev->ieee80211_ptr->wext.default_key = -1; 1969 else if (key.idx == dev->ieee80211_ptr->wext.default_mgmt_key) 1970 dev->ieee80211_ptr->wext.default_mgmt_key = -1; 1971 } 1972 #endif 1973 wdev_unlock(dev->ieee80211_ptr); 1974 1975 return err; 1976 } 1977 1978 static int nl80211_addset_beacon(struct sk_buff *skb, struct genl_info *info) 1979 { 1980 int (*call)(struct wiphy *wiphy, struct net_device *dev, 1981 struct beacon_parameters *info); 1982 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 1983 struct net_device *dev = info->user_ptr[1]; 1984 struct wireless_dev *wdev = dev->ieee80211_ptr; 1985 struct beacon_parameters params; 1986 int haveinfo = 0, err; 1987 1988 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_BEACON_TAIL])) 1989 return -EINVAL; 1990 1991 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP && 1992 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) 1993 return -EOPNOTSUPP; 1994 1995 memset(¶ms, 0, sizeof(params)); 1996 1997 switch (info->genlhdr->cmd) { 1998 case NL80211_CMD_NEW_BEACON: 1999 /* these are required for NEW_BEACON */ 2000 if (!info->attrs[NL80211_ATTR_BEACON_INTERVAL] || 2001 !info->attrs[NL80211_ATTR_DTIM_PERIOD] || 2002 !info->attrs[NL80211_ATTR_BEACON_HEAD]) 2003 return -EINVAL; 2004 2005 params.interval = 2006 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]); 2007 params.dtim_period = 2008 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]); 2009 2010 err = cfg80211_validate_beacon_int(rdev, params.interval); 2011 if (err) 2012 return err; 2013 2014 call = rdev->ops->add_beacon; 2015 break; 2016 case NL80211_CMD_SET_BEACON: 2017 call = rdev->ops->set_beacon; 2018 break; 2019 default: 2020 WARN_ON(1); 2021 return -EOPNOTSUPP; 2022 } 2023 2024 if (!call) 2025 return -EOPNOTSUPP; 2026 2027 if (info->attrs[NL80211_ATTR_BEACON_HEAD]) { 2028 params.head = nla_data(info->attrs[NL80211_ATTR_BEACON_HEAD]); 2029 params.head_len = 2030 nla_len(info->attrs[NL80211_ATTR_BEACON_HEAD]); 2031 haveinfo = 1; 2032 } 2033 2034 if (info->attrs[NL80211_ATTR_BEACON_TAIL]) { 2035 params.tail = nla_data(info->attrs[NL80211_ATTR_BEACON_TAIL]); 2036 params.tail_len = 2037 nla_len(info->attrs[NL80211_ATTR_BEACON_TAIL]); 2038 haveinfo = 1; 2039 } 2040 2041 if (!haveinfo) 2042 return -EINVAL; 2043 2044 err = call(&rdev->wiphy, dev, ¶ms); 2045 if (!err && params.interval) 2046 wdev->beacon_interval = params.interval; 2047 return err; 2048 } 2049 2050 static int nl80211_del_beacon(struct sk_buff *skb, struct genl_info *info) 2051 { 2052 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 2053 struct net_device *dev = info->user_ptr[1]; 2054 struct wireless_dev *wdev = dev->ieee80211_ptr; 2055 int err; 2056 2057 if (!rdev->ops->del_beacon) 2058 return -EOPNOTSUPP; 2059 2060 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP && 2061 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) 2062 return -EOPNOTSUPP; 2063 2064 err = rdev->ops->del_beacon(&rdev->wiphy, dev); 2065 if (!err) 2066 wdev->beacon_interval = 0; 2067 return err; 2068 } 2069 2070 static const struct nla_policy sta_flags_policy[NL80211_STA_FLAG_MAX + 1] = { 2071 [NL80211_STA_FLAG_AUTHORIZED] = { .type = NLA_FLAG }, 2072 [NL80211_STA_FLAG_SHORT_PREAMBLE] = { .type = NLA_FLAG }, 2073 [NL80211_STA_FLAG_WME] = { .type = NLA_FLAG }, 2074 [NL80211_STA_FLAG_MFP] = { .type = NLA_FLAG }, 2075 [NL80211_STA_FLAG_AUTHENTICATED] = { .type = NLA_FLAG }, 2076 }; 2077 2078 static int parse_station_flags(struct genl_info *info, 2079 struct station_parameters *params) 2080 { 2081 struct nlattr *flags[NL80211_STA_FLAG_MAX + 1]; 2082 struct nlattr *nla; 2083 int flag; 2084 2085 /* 2086 * Try parsing the new attribute first so userspace 2087 * can specify both for older kernels. 2088 */ 2089 nla = info->attrs[NL80211_ATTR_STA_FLAGS2]; 2090 if (nla) { 2091 struct nl80211_sta_flag_update *sta_flags; 2092 2093 sta_flags = nla_data(nla); 2094 params->sta_flags_mask = sta_flags->mask; 2095 params->sta_flags_set = sta_flags->set; 2096 if ((params->sta_flags_mask | 2097 params->sta_flags_set) & BIT(__NL80211_STA_FLAG_INVALID)) 2098 return -EINVAL; 2099 return 0; 2100 } 2101 2102 /* if present, parse the old attribute */ 2103 2104 nla = info->attrs[NL80211_ATTR_STA_FLAGS]; 2105 if (!nla) 2106 return 0; 2107 2108 if (nla_parse_nested(flags, NL80211_STA_FLAG_MAX, 2109 nla, sta_flags_policy)) 2110 return -EINVAL; 2111 2112 params->sta_flags_mask = (1 << __NL80211_STA_FLAG_AFTER_LAST) - 1; 2113 params->sta_flags_mask &= ~1; 2114 2115 for (flag = 1; flag <= NL80211_STA_FLAG_MAX; flag++) 2116 if (flags[flag]) 2117 params->sta_flags_set |= (1<<flag); 2118 2119 return 0; 2120 } 2121 2122 static bool nl80211_put_sta_rate(struct sk_buff *msg, struct rate_info *info, 2123 int attr) 2124 { 2125 struct nlattr *rate; 2126 u16 bitrate; 2127 2128 rate = nla_nest_start(msg, attr); 2129 if (!rate) 2130 goto nla_put_failure; 2131 2132 /* cfg80211_calculate_bitrate will return 0 for mcs >= 32 */ 2133 bitrate = cfg80211_calculate_bitrate(info); 2134 if (bitrate > 0) 2135 NLA_PUT_U16(msg, NL80211_RATE_INFO_BITRATE, bitrate); 2136 2137 if (info->flags & RATE_INFO_FLAGS_MCS) 2138 NLA_PUT_U8(msg, NL80211_RATE_INFO_MCS, info->mcs); 2139 if (info->flags & RATE_INFO_FLAGS_40_MHZ_WIDTH) 2140 NLA_PUT_FLAG(msg, NL80211_RATE_INFO_40_MHZ_WIDTH); 2141 if (info->flags & RATE_INFO_FLAGS_SHORT_GI) 2142 NLA_PUT_FLAG(msg, NL80211_RATE_INFO_SHORT_GI); 2143 2144 nla_nest_end(msg, rate); 2145 return true; 2146 2147 nla_put_failure: 2148 return false; 2149 } 2150 2151 static int nl80211_send_station(struct sk_buff *msg, u32 pid, u32 seq, 2152 int flags, struct net_device *dev, 2153 const u8 *mac_addr, struct station_info *sinfo) 2154 { 2155 void *hdr; 2156 struct nlattr *sinfoattr, *bss_param; 2157 2158 hdr = nl80211hdr_put(msg, pid, seq, flags, NL80211_CMD_NEW_STATION); 2159 if (!hdr) 2160 return -1; 2161 2162 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex); 2163 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr); 2164 2165 NLA_PUT_U32(msg, NL80211_ATTR_GENERATION, sinfo->generation); 2166 2167 sinfoattr = nla_nest_start(msg, NL80211_ATTR_STA_INFO); 2168 if (!sinfoattr) 2169 goto nla_put_failure; 2170 if (sinfo->filled & STATION_INFO_CONNECTED_TIME) 2171 NLA_PUT_U32(msg, NL80211_STA_INFO_CONNECTED_TIME, 2172 sinfo->connected_time); 2173 if (sinfo->filled & STATION_INFO_INACTIVE_TIME) 2174 NLA_PUT_U32(msg, NL80211_STA_INFO_INACTIVE_TIME, 2175 sinfo->inactive_time); 2176 if (sinfo->filled & STATION_INFO_RX_BYTES) 2177 NLA_PUT_U32(msg, NL80211_STA_INFO_RX_BYTES, 2178 sinfo->rx_bytes); 2179 if (sinfo->filled & STATION_INFO_TX_BYTES) 2180 NLA_PUT_U32(msg, NL80211_STA_INFO_TX_BYTES, 2181 sinfo->tx_bytes); 2182 if (sinfo->filled & STATION_INFO_LLID) 2183 NLA_PUT_U16(msg, NL80211_STA_INFO_LLID, 2184 sinfo->llid); 2185 if (sinfo->filled & STATION_INFO_PLID) 2186 NLA_PUT_U16(msg, NL80211_STA_INFO_PLID, 2187 sinfo->plid); 2188 if (sinfo->filled & STATION_INFO_PLINK_STATE) 2189 NLA_PUT_U8(msg, NL80211_STA_INFO_PLINK_STATE, 2190 sinfo->plink_state); 2191 if (sinfo->filled & STATION_INFO_SIGNAL) 2192 NLA_PUT_U8(msg, NL80211_STA_INFO_SIGNAL, 2193 sinfo->signal); 2194 if (sinfo->filled & STATION_INFO_SIGNAL_AVG) 2195 NLA_PUT_U8(msg, NL80211_STA_INFO_SIGNAL_AVG, 2196 sinfo->signal_avg); 2197 if (sinfo->filled & STATION_INFO_TX_BITRATE) { 2198 if (!nl80211_put_sta_rate(msg, &sinfo->txrate, 2199 NL80211_STA_INFO_TX_BITRATE)) 2200 goto nla_put_failure; 2201 } 2202 if (sinfo->filled & STATION_INFO_RX_BITRATE) { 2203 if (!nl80211_put_sta_rate(msg, &sinfo->rxrate, 2204 NL80211_STA_INFO_RX_BITRATE)) 2205 goto nla_put_failure; 2206 } 2207 if (sinfo->filled & STATION_INFO_RX_PACKETS) 2208 NLA_PUT_U32(msg, NL80211_STA_INFO_RX_PACKETS, 2209 sinfo->rx_packets); 2210 if (sinfo->filled & STATION_INFO_TX_PACKETS) 2211 NLA_PUT_U32(msg, NL80211_STA_INFO_TX_PACKETS, 2212 sinfo->tx_packets); 2213 if (sinfo->filled & STATION_INFO_TX_RETRIES) 2214 NLA_PUT_U32(msg, NL80211_STA_INFO_TX_RETRIES, 2215 sinfo->tx_retries); 2216 if (sinfo->filled & STATION_INFO_TX_FAILED) 2217 NLA_PUT_U32(msg, NL80211_STA_INFO_TX_FAILED, 2218 sinfo->tx_failed); 2219 if (sinfo->filled & STATION_INFO_BSS_PARAM) { 2220 bss_param = nla_nest_start(msg, NL80211_STA_INFO_BSS_PARAM); 2221 if (!bss_param) 2222 goto nla_put_failure; 2223 2224 if (sinfo->bss_param.flags & BSS_PARAM_FLAGS_CTS_PROT) 2225 NLA_PUT_FLAG(msg, NL80211_STA_BSS_PARAM_CTS_PROT); 2226 if (sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_PREAMBLE) 2227 NLA_PUT_FLAG(msg, NL80211_STA_BSS_PARAM_SHORT_PREAMBLE); 2228 if (sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_SLOT_TIME) 2229 NLA_PUT_FLAG(msg, 2230 NL80211_STA_BSS_PARAM_SHORT_SLOT_TIME); 2231 NLA_PUT_U8(msg, NL80211_STA_BSS_PARAM_DTIM_PERIOD, 2232 sinfo->bss_param.dtim_period); 2233 NLA_PUT_U16(msg, NL80211_STA_BSS_PARAM_BEACON_INTERVAL, 2234 sinfo->bss_param.beacon_interval); 2235 2236 nla_nest_end(msg, bss_param); 2237 } 2238 nla_nest_end(msg, sinfoattr); 2239 2240 return genlmsg_end(msg, hdr); 2241 2242 nla_put_failure: 2243 genlmsg_cancel(msg, hdr); 2244 return -EMSGSIZE; 2245 } 2246 2247 static int nl80211_dump_station(struct sk_buff *skb, 2248 struct netlink_callback *cb) 2249 { 2250 struct station_info sinfo; 2251 struct cfg80211_registered_device *dev; 2252 struct net_device *netdev; 2253 u8 mac_addr[ETH_ALEN]; 2254 int sta_idx = cb->args[1]; 2255 int err; 2256 2257 err = nl80211_prepare_netdev_dump(skb, cb, &dev, &netdev); 2258 if (err) 2259 return err; 2260 2261 if (!dev->ops->dump_station) { 2262 err = -EOPNOTSUPP; 2263 goto out_err; 2264 } 2265 2266 while (1) { 2267 err = dev->ops->dump_station(&dev->wiphy, netdev, sta_idx, 2268 mac_addr, &sinfo); 2269 if (err == -ENOENT) 2270 break; 2271 if (err) 2272 goto out_err; 2273 2274 if (nl80211_send_station(skb, 2275 NETLINK_CB(cb->skb).pid, 2276 cb->nlh->nlmsg_seq, NLM_F_MULTI, 2277 netdev, mac_addr, 2278 &sinfo) < 0) 2279 goto out; 2280 2281 sta_idx++; 2282 } 2283 2284 2285 out: 2286 cb->args[1] = sta_idx; 2287 err = skb->len; 2288 out_err: 2289 nl80211_finish_netdev_dump(dev); 2290 2291 return err; 2292 } 2293 2294 static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info) 2295 { 2296 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 2297 struct net_device *dev = info->user_ptr[1]; 2298 struct station_info sinfo; 2299 struct sk_buff *msg; 2300 u8 *mac_addr = NULL; 2301 int err; 2302 2303 memset(&sinfo, 0, sizeof(sinfo)); 2304 2305 if (!info->attrs[NL80211_ATTR_MAC]) 2306 return -EINVAL; 2307 2308 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]); 2309 2310 if (!rdev->ops->get_station) 2311 return -EOPNOTSUPP; 2312 2313 err = rdev->ops->get_station(&rdev->wiphy, dev, mac_addr, &sinfo); 2314 if (err) 2315 return err; 2316 2317 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 2318 if (!msg) 2319 return -ENOMEM; 2320 2321 if (nl80211_send_station(msg, info->snd_pid, info->snd_seq, 0, 2322 dev, mac_addr, &sinfo) < 0) { 2323 nlmsg_free(msg); 2324 return -ENOBUFS; 2325 } 2326 2327 return genlmsg_reply(msg, info); 2328 } 2329 2330 /* 2331 * Get vlan interface making sure it is running and on the right wiphy. 2332 */ 2333 static int get_vlan(struct genl_info *info, 2334 struct cfg80211_registered_device *rdev, 2335 struct net_device **vlan) 2336 { 2337 struct nlattr *vlanattr = info->attrs[NL80211_ATTR_STA_VLAN]; 2338 *vlan = NULL; 2339 2340 if (vlanattr) { 2341 *vlan = dev_get_by_index(genl_info_net(info), 2342 nla_get_u32(vlanattr)); 2343 if (!*vlan) 2344 return -ENODEV; 2345 if (!(*vlan)->ieee80211_ptr) 2346 return -EINVAL; 2347 if ((*vlan)->ieee80211_ptr->wiphy != &rdev->wiphy) 2348 return -EINVAL; 2349 if (!netif_running(*vlan)) 2350 return -ENETDOWN; 2351 } 2352 return 0; 2353 } 2354 2355 static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info) 2356 { 2357 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 2358 int err; 2359 struct net_device *dev = info->user_ptr[1]; 2360 struct station_parameters params; 2361 u8 *mac_addr = NULL; 2362 2363 memset(¶ms, 0, sizeof(params)); 2364 2365 params.listen_interval = -1; 2366 params.plink_state = -1; 2367 2368 if (info->attrs[NL80211_ATTR_STA_AID]) 2369 return -EINVAL; 2370 2371 if (!info->attrs[NL80211_ATTR_MAC]) 2372 return -EINVAL; 2373 2374 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]); 2375 2376 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) { 2377 params.supported_rates = 2378 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]); 2379 params.supported_rates_len = 2380 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]); 2381 } 2382 2383 if (info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]) 2384 params.listen_interval = 2385 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]); 2386 2387 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) 2388 params.ht_capa = 2389 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]); 2390 2391 if (parse_station_flags(info, ¶ms)) 2392 return -EINVAL; 2393 2394 if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION]) 2395 params.plink_action = 2396 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]); 2397 2398 if (info->attrs[NL80211_ATTR_STA_PLINK_STATE]) 2399 params.plink_state = 2400 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_STATE]); 2401 2402 err = get_vlan(info, rdev, ¶ms.vlan); 2403 if (err) 2404 goto out; 2405 2406 /* validate settings */ 2407 err = 0; 2408 2409 switch (dev->ieee80211_ptr->iftype) { 2410 case NL80211_IFTYPE_AP: 2411 case NL80211_IFTYPE_AP_VLAN: 2412 case NL80211_IFTYPE_P2P_GO: 2413 /* disallow mesh-specific things */ 2414 if (params.plink_action) 2415 err = -EINVAL; 2416 break; 2417 case NL80211_IFTYPE_P2P_CLIENT: 2418 case NL80211_IFTYPE_STATION: 2419 /* disallow everything but AUTHORIZED flag */ 2420 if (params.plink_action) 2421 err = -EINVAL; 2422 if (params.vlan) 2423 err = -EINVAL; 2424 if (params.supported_rates) 2425 err = -EINVAL; 2426 if (params.ht_capa) 2427 err = -EINVAL; 2428 if (params.listen_interval >= 0) 2429 err = -EINVAL; 2430 if (params.sta_flags_mask & ~BIT(NL80211_STA_FLAG_AUTHORIZED)) 2431 err = -EINVAL; 2432 break; 2433 case NL80211_IFTYPE_MESH_POINT: 2434 /* disallow things mesh doesn't support */ 2435 if (params.vlan) 2436 err = -EINVAL; 2437 if (params.ht_capa) 2438 err = -EINVAL; 2439 if (params.listen_interval >= 0) 2440 err = -EINVAL; 2441 if (params.sta_flags_mask & 2442 ~(BIT(NL80211_STA_FLAG_AUTHENTICATED) | 2443 BIT(NL80211_STA_FLAG_MFP) | 2444 BIT(NL80211_STA_FLAG_AUTHORIZED))) 2445 err = -EINVAL; 2446 break; 2447 default: 2448 err = -EINVAL; 2449 } 2450 2451 if (err) 2452 goto out; 2453 2454 if (!rdev->ops->change_station) { 2455 err = -EOPNOTSUPP; 2456 goto out; 2457 } 2458 2459 err = rdev->ops->change_station(&rdev->wiphy, dev, mac_addr, ¶ms); 2460 2461 out: 2462 if (params.vlan) 2463 dev_put(params.vlan); 2464 2465 return err; 2466 } 2467 2468 static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info) 2469 { 2470 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 2471 int err; 2472 struct net_device *dev = info->user_ptr[1]; 2473 struct station_parameters params; 2474 u8 *mac_addr = NULL; 2475 2476 memset(¶ms, 0, sizeof(params)); 2477 2478 if (!info->attrs[NL80211_ATTR_MAC]) 2479 return -EINVAL; 2480 2481 if (!info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]) 2482 return -EINVAL; 2483 2484 if (!info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) 2485 return -EINVAL; 2486 2487 if (!info->attrs[NL80211_ATTR_STA_AID]) 2488 return -EINVAL; 2489 2490 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]); 2491 params.supported_rates = 2492 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]); 2493 params.supported_rates_len = 2494 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]); 2495 params.listen_interval = 2496 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]); 2497 2498 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]); 2499 if (!params.aid || params.aid > IEEE80211_MAX_AID) 2500 return -EINVAL; 2501 2502 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) 2503 params.ht_capa = 2504 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]); 2505 2506 if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION]) 2507 params.plink_action = 2508 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]); 2509 2510 if (parse_station_flags(info, ¶ms)) 2511 return -EINVAL; 2512 2513 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP && 2514 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN && 2515 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT && 2516 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) 2517 return -EINVAL; 2518 2519 err = get_vlan(info, rdev, ¶ms.vlan); 2520 if (err) 2521 goto out; 2522 2523 /* validate settings */ 2524 err = 0; 2525 2526 if (!rdev->ops->add_station) { 2527 err = -EOPNOTSUPP; 2528 goto out; 2529 } 2530 2531 err = rdev->ops->add_station(&rdev->wiphy, dev, mac_addr, ¶ms); 2532 2533 out: 2534 if (params.vlan) 2535 dev_put(params.vlan); 2536 return err; 2537 } 2538 2539 static int nl80211_del_station(struct sk_buff *skb, struct genl_info *info) 2540 { 2541 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 2542 struct net_device *dev = info->user_ptr[1]; 2543 u8 *mac_addr = NULL; 2544 2545 if (info->attrs[NL80211_ATTR_MAC]) 2546 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]); 2547 2548 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP && 2549 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN && 2550 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT && 2551 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) 2552 return -EINVAL; 2553 2554 if (!rdev->ops->del_station) 2555 return -EOPNOTSUPP; 2556 2557 return rdev->ops->del_station(&rdev->wiphy, dev, mac_addr); 2558 } 2559 2560 static int nl80211_send_mpath(struct sk_buff *msg, u32 pid, u32 seq, 2561 int flags, struct net_device *dev, 2562 u8 *dst, u8 *next_hop, 2563 struct mpath_info *pinfo) 2564 { 2565 void *hdr; 2566 struct nlattr *pinfoattr; 2567 2568 hdr = nl80211hdr_put(msg, pid, seq, flags, NL80211_CMD_NEW_STATION); 2569 if (!hdr) 2570 return -1; 2571 2572 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex); 2573 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, dst); 2574 NLA_PUT(msg, NL80211_ATTR_MPATH_NEXT_HOP, ETH_ALEN, next_hop); 2575 2576 NLA_PUT_U32(msg, NL80211_ATTR_GENERATION, pinfo->generation); 2577 2578 pinfoattr = nla_nest_start(msg, NL80211_ATTR_MPATH_INFO); 2579 if (!pinfoattr) 2580 goto nla_put_failure; 2581 if (pinfo->filled & MPATH_INFO_FRAME_QLEN) 2582 NLA_PUT_U32(msg, NL80211_MPATH_INFO_FRAME_QLEN, 2583 pinfo->frame_qlen); 2584 if (pinfo->filled & MPATH_INFO_SN) 2585 NLA_PUT_U32(msg, NL80211_MPATH_INFO_SN, 2586 pinfo->sn); 2587 if (pinfo->filled & MPATH_INFO_METRIC) 2588 NLA_PUT_U32(msg, NL80211_MPATH_INFO_METRIC, 2589 pinfo->metric); 2590 if (pinfo->filled & MPATH_INFO_EXPTIME) 2591 NLA_PUT_U32(msg, NL80211_MPATH_INFO_EXPTIME, 2592 pinfo->exptime); 2593 if (pinfo->filled & MPATH_INFO_FLAGS) 2594 NLA_PUT_U8(msg, NL80211_MPATH_INFO_FLAGS, 2595 pinfo->flags); 2596 if (pinfo->filled & MPATH_INFO_DISCOVERY_TIMEOUT) 2597 NLA_PUT_U32(msg, NL80211_MPATH_INFO_DISCOVERY_TIMEOUT, 2598 pinfo->discovery_timeout); 2599 if (pinfo->filled & MPATH_INFO_DISCOVERY_RETRIES) 2600 NLA_PUT_U8(msg, NL80211_MPATH_INFO_DISCOVERY_RETRIES, 2601 pinfo->discovery_retries); 2602 2603 nla_nest_end(msg, pinfoattr); 2604 2605 return genlmsg_end(msg, hdr); 2606 2607 nla_put_failure: 2608 genlmsg_cancel(msg, hdr); 2609 return -EMSGSIZE; 2610 } 2611 2612 static int nl80211_dump_mpath(struct sk_buff *skb, 2613 struct netlink_callback *cb) 2614 { 2615 struct mpath_info pinfo; 2616 struct cfg80211_registered_device *dev; 2617 struct net_device *netdev; 2618 u8 dst[ETH_ALEN]; 2619 u8 next_hop[ETH_ALEN]; 2620 int path_idx = cb->args[1]; 2621 int err; 2622 2623 err = nl80211_prepare_netdev_dump(skb, cb, &dev, &netdev); 2624 if (err) 2625 return err; 2626 2627 if (!dev->ops->dump_mpath) { 2628 err = -EOPNOTSUPP; 2629 goto out_err; 2630 } 2631 2632 if (netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT) { 2633 err = -EOPNOTSUPP; 2634 goto out_err; 2635 } 2636 2637 while (1) { 2638 err = dev->ops->dump_mpath(&dev->wiphy, netdev, path_idx, 2639 dst, next_hop, &pinfo); 2640 if (err == -ENOENT) 2641 break; 2642 if (err) 2643 goto out_err; 2644 2645 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).pid, 2646 cb->nlh->nlmsg_seq, NLM_F_MULTI, 2647 netdev, dst, next_hop, 2648 &pinfo) < 0) 2649 goto out; 2650 2651 path_idx++; 2652 } 2653 2654 2655 out: 2656 cb->args[1] = path_idx; 2657 err = skb->len; 2658 out_err: 2659 nl80211_finish_netdev_dump(dev); 2660 return err; 2661 } 2662 2663 static int nl80211_get_mpath(struct sk_buff *skb, struct genl_info *info) 2664 { 2665 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 2666 int err; 2667 struct net_device *dev = info->user_ptr[1]; 2668 struct mpath_info pinfo; 2669 struct sk_buff *msg; 2670 u8 *dst = NULL; 2671 u8 next_hop[ETH_ALEN]; 2672 2673 memset(&pinfo, 0, sizeof(pinfo)); 2674 2675 if (!info->attrs[NL80211_ATTR_MAC]) 2676 return -EINVAL; 2677 2678 dst = nla_data(info->attrs[NL80211_ATTR_MAC]); 2679 2680 if (!rdev->ops->get_mpath) 2681 return -EOPNOTSUPP; 2682 2683 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT) 2684 return -EOPNOTSUPP; 2685 2686 err = rdev->ops->get_mpath(&rdev->wiphy, dev, dst, next_hop, &pinfo); 2687 if (err) 2688 return err; 2689 2690 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 2691 if (!msg) 2692 return -ENOMEM; 2693 2694 if (nl80211_send_mpath(msg, info->snd_pid, info->snd_seq, 0, 2695 dev, dst, next_hop, &pinfo) < 0) { 2696 nlmsg_free(msg); 2697 return -ENOBUFS; 2698 } 2699 2700 return genlmsg_reply(msg, info); 2701 } 2702 2703 static int nl80211_set_mpath(struct sk_buff *skb, struct genl_info *info) 2704 { 2705 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 2706 struct net_device *dev = info->user_ptr[1]; 2707 u8 *dst = NULL; 2708 u8 *next_hop = NULL; 2709 2710 if (!info->attrs[NL80211_ATTR_MAC]) 2711 return -EINVAL; 2712 2713 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]) 2714 return -EINVAL; 2715 2716 dst = nla_data(info->attrs[NL80211_ATTR_MAC]); 2717 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]); 2718 2719 if (!rdev->ops->change_mpath) 2720 return -EOPNOTSUPP; 2721 2722 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT) 2723 return -EOPNOTSUPP; 2724 2725 return rdev->ops->change_mpath(&rdev->wiphy, dev, dst, next_hop); 2726 } 2727 2728 static int nl80211_new_mpath(struct sk_buff *skb, struct genl_info *info) 2729 { 2730 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 2731 struct net_device *dev = info->user_ptr[1]; 2732 u8 *dst = NULL; 2733 u8 *next_hop = NULL; 2734 2735 if (!info->attrs[NL80211_ATTR_MAC]) 2736 return -EINVAL; 2737 2738 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]) 2739 return -EINVAL; 2740 2741 dst = nla_data(info->attrs[NL80211_ATTR_MAC]); 2742 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]); 2743 2744 if (!rdev->ops->add_mpath) 2745 return -EOPNOTSUPP; 2746 2747 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT) 2748 return -EOPNOTSUPP; 2749 2750 return rdev->ops->add_mpath(&rdev->wiphy, dev, dst, next_hop); 2751 } 2752 2753 static int nl80211_del_mpath(struct sk_buff *skb, struct genl_info *info) 2754 { 2755 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 2756 struct net_device *dev = info->user_ptr[1]; 2757 u8 *dst = NULL; 2758 2759 if (info->attrs[NL80211_ATTR_MAC]) 2760 dst = nla_data(info->attrs[NL80211_ATTR_MAC]); 2761 2762 if (!rdev->ops->del_mpath) 2763 return -EOPNOTSUPP; 2764 2765 return rdev->ops->del_mpath(&rdev->wiphy, dev, dst); 2766 } 2767 2768 static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info) 2769 { 2770 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 2771 struct net_device *dev = info->user_ptr[1]; 2772 struct bss_parameters params; 2773 2774 memset(¶ms, 0, sizeof(params)); 2775 /* default to not changing parameters */ 2776 params.use_cts_prot = -1; 2777 params.use_short_preamble = -1; 2778 params.use_short_slot_time = -1; 2779 params.ap_isolate = -1; 2780 params.ht_opmode = -1; 2781 2782 if (info->attrs[NL80211_ATTR_BSS_CTS_PROT]) 2783 params.use_cts_prot = 2784 nla_get_u8(info->attrs[NL80211_ATTR_BSS_CTS_PROT]); 2785 if (info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]) 2786 params.use_short_preamble = 2787 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]); 2788 if (info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]) 2789 params.use_short_slot_time = 2790 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]); 2791 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) { 2792 params.basic_rates = 2793 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]); 2794 params.basic_rates_len = 2795 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]); 2796 } 2797 if (info->attrs[NL80211_ATTR_AP_ISOLATE]) 2798 params.ap_isolate = !!nla_get_u8(info->attrs[NL80211_ATTR_AP_ISOLATE]); 2799 if (info->attrs[NL80211_ATTR_BSS_HT_OPMODE]) 2800 params.ht_opmode = 2801 nla_get_u16(info->attrs[NL80211_ATTR_BSS_HT_OPMODE]); 2802 2803 if (!rdev->ops->change_bss) 2804 return -EOPNOTSUPP; 2805 2806 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP && 2807 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) 2808 return -EOPNOTSUPP; 2809 2810 return rdev->ops->change_bss(&rdev->wiphy, dev, ¶ms); 2811 } 2812 2813 static const struct nla_policy reg_rule_policy[NL80211_REG_RULE_ATTR_MAX + 1] = { 2814 [NL80211_ATTR_REG_RULE_FLAGS] = { .type = NLA_U32 }, 2815 [NL80211_ATTR_FREQ_RANGE_START] = { .type = NLA_U32 }, 2816 [NL80211_ATTR_FREQ_RANGE_END] = { .type = NLA_U32 }, 2817 [NL80211_ATTR_FREQ_RANGE_MAX_BW] = { .type = NLA_U32 }, 2818 [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN] = { .type = NLA_U32 }, 2819 [NL80211_ATTR_POWER_RULE_MAX_EIRP] = { .type = NLA_U32 }, 2820 }; 2821 2822 static int parse_reg_rule(struct nlattr *tb[], 2823 struct ieee80211_reg_rule *reg_rule) 2824 { 2825 struct ieee80211_freq_range *freq_range = ®_rule->freq_range; 2826 struct ieee80211_power_rule *power_rule = ®_rule->power_rule; 2827 2828 if (!tb[NL80211_ATTR_REG_RULE_FLAGS]) 2829 return -EINVAL; 2830 if (!tb[NL80211_ATTR_FREQ_RANGE_START]) 2831 return -EINVAL; 2832 if (!tb[NL80211_ATTR_FREQ_RANGE_END]) 2833 return -EINVAL; 2834 if (!tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]) 2835 return -EINVAL; 2836 if (!tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]) 2837 return -EINVAL; 2838 2839 reg_rule->flags = nla_get_u32(tb[NL80211_ATTR_REG_RULE_FLAGS]); 2840 2841 freq_range->start_freq_khz = 2842 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]); 2843 freq_range->end_freq_khz = 2844 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]); 2845 freq_range->max_bandwidth_khz = 2846 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]); 2847 2848 power_rule->max_eirp = 2849 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]); 2850 2851 if (tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]) 2852 power_rule->max_antenna_gain = 2853 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]); 2854 2855 return 0; 2856 } 2857 2858 static int nl80211_req_set_reg(struct sk_buff *skb, struct genl_info *info) 2859 { 2860 int r; 2861 char *data = NULL; 2862 2863 /* 2864 * You should only get this when cfg80211 hasn't yet initialized 2865 * completely when built-in to the kernel right between the time 2866 * window between nl80211_init() and regulatory_init(), if that is 2867 * even possible. 2868 */ 2869 mutex_lock(&cfg80211_mutex); 2870 if (unlikely(!cfg80211_regdomain)) { 2871 mutex_unlock(&cfg80211_mutex); 2872 return -EINPROGRESS; 2873 } 2874 mutex_unlock(&cfg80211_mutex); 2875 2876 if (!info->attrs[NL80211_ATTR_REG_ALPHA2]) 2877 return -EINVAL; 2878 2879 data = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]); 2880 2881 r = regulatory_hint_user(data); 2882 2883 return r; 2884 } 2885 2886 static int nl80211_get_mesh_config(struct sk_buff *skb, 2887 struct genl_info *info) 2888 { 2889 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 2890 struct net_device *dev = info->user_ptr[1]; 2891 struct wireless_dev *wdev = dev->ieee80211_ptr; 2892 struct mesh_config cur_params; 2893 int err = 0; 2894 void *hdr; 2895 struct nlattr *pinfoattr; 2896 struct sk_buff *msg; 2897 2898 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) 2899 return -EOPNOTSUPP; 2900 2901 if (!rdev->ops->get_mesh_config) 2902 return -EOPNOTSUPP; 2903 2904 wdev_lock(wdev); 2905 /* If not connected, get default parameters */ 2906 if (!wdev->mesh_id_len) 2907 memcpy(&cur_params, &default_mesh_config, sizeof(cur_params)); 2908 else 2909 err = rdev->ops->get_mesh_config(&rdev->wiphy, dev, 2910 &cur_params); 2911 wdev_unlock(wdev); 2912 2913 if (err) 2914 return err; 2915 2916 /* Draw up a netlink message to send back */ 2917 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 2918 if (!msg) 2919 return -ENOMEM; 2920 hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0, 2921 NL80211_CMD_GET_MESH_CONFIG); 2922 if (!hdr) 2923 goto out; 2924 pinfoattr = nla_nest_start(msg, NL80211_ATTR_MESH_CONFIG); 2925 if (!pinfoattr) 2926 goto nla_put_failure; 2927 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex); 2928 NLA_PUT_U16(msg, NL80211_MESHCONF_RETRY_TIMEOUT, 2929 cur_params.dot11MeshRetryTimeout); 2930 NLA_PUT_U16(msg, NL80211_MESHCONF_CONFIRM_TIMEOUT, 2931 cur_params.dot11MeshConfirmTimeout); 2932 NLA_PUT_U16(msg, NL80211_MESHCONF_HOLDING_TIMEOUT, 2933 cur_params.dot11MeshHoldingTimeout); 2934 NLA_PUT_U16(msg, NL80211_MESHCONF_MAX_PEER_LINKS, 2935 cur_params.dot11MeshMaxPeerLinks); 2936 NLA_PUT_U8(msg, NL80211_MESHCONF_MAX_RETRIES, 2937 cur_params.dot11MeshMaxRetries); 2938 NLA_PUT_U8(msg, NL80211_MESHCONF_TTL, 2939 cur_params.dot11MeshTTL); 2940 NLA_PUT_U8(msg, NL80211_MESHCONF_ELEMENT_TTL, 2941 cur_params.element_ttl); 2942 NLA_PUT_U8(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS, 2943 cur_params.auto_open_plinks); 2944 NLA_PUT_U8(msg, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES, 2945 cur_params.dot11MeshHWMPmaxPREQretries); 2946 NLA_PUT_U32(msg, NL80211_MESHCONF_PATH_REFRESH_TIME, 2947 cur_params.path_refresh_time); 2948 NLA_PUT_U16(msg, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT, 2949 cur_params.min_discovery_timeout); 2950 NLA_PUT_U32(msg, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT, 2951 cur_params.dot11MeshHWMPactivePathTimeout); 2952 NLA_PUT_U16(msg, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL, 2953 cur_params.dot11MeshHWMPpreqMinInterval); 2954 NLA_PUT_U16(msg, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME, 2955 cur_params.dot11MeshHWMPnetDiameterTraversalTime); 2956 NLA_PUT_U8(msg, NL80211_MESHCONF_HWMP_ROOTMODE, 2957 cur_params.dot11MeshHWMPRootMode); 2958 nla_nest_end(msg, pinfoattr); 2959 genlmsg_end(msg, hdr); 2960 return genlmsg_reply(msg, info); 2961 2962 nla_put_failure: 2963 genlmsg_cancel(msg, hdr); 2964 out: 2965 nlmsg_free(msg); 2966 return -ENOBUFS; 2967 } 2968 2969 static const struct nla_policy nl80211_meshconf_params_policy[NL80211_MESHCONF_ATTR_MAX+1] = { 2970 [NL80211_MESHCONF_RETRY_TIMEOUT] = { .type = NLA_U16 }, 2971 [NL80211_MESHCONF_CONFIRM_TIMEOUT] = { .type = NLA_U16 }, 2972 [NL80211_MESHCONF_HOLDING_TIMEOUT] = { .type = NLA_U16 }, 2973 [NL80211_MESHCONF_MAX_PEER_LINKS] = { .type = NLA_U16 }, 2974 [NL80211_MESHCONF_MAX_RETRIES] = { .type = NLA_U8 }, 2975 [NL80211_MESHCONF_TTL] = { .type = NLA_U8 }, 2976 [NL80211_MESHCONF_ELEMENT_TTL] = { .type = NLA_U8 }, 2977 [NL80211_MESHCONF_AUTO_OPEN_PLINKS] = { .type = NLA_U8 }, 2978 2979 [NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES] = { .type = NLA_U8 }, 2980 [NL80211_MESHCONF_PATH_REFRESH_TIME] = { .type = NLA_U32 }, 2981 [NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT] = { .type = NLA_U16 }, 2982 [NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT] = { .type = NLA_U32 }, 2983 [NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL] = { .type = NLA_U16 }, 2984 [NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME] = { .type = NLA_U16 }, 2985 }; 2986 2987 static const struct nla_policy 2988 nl80211_mesh_setup_params_policy[NL80211_MESH_SETUP_ATTR_MAX+1] = { 2989 [NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL] = { .type = NLA_U8 }, 2990 [NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC] = { .type = NLA_U8 }, 2991 [NL80211_MESH_SETUP_USERSPACE_AUTH] = { .type = NLA_FLAG }, 2992 [NL80211_MESH_SETUP_IE] = { .type = NLA_BINARY, 2993 .len = IEEE80211_MAX_DATA_LEN }, 2994 [NL80211_MESH_SETUP_USERSPACE_AMPE] = { .type = NLA_FLAG }, 2995 }; 2996 2997 static int nl80211_parse_mesh_config(struct genl_info *info, 2998 struct mesh_config *cfg, 2999 u32 *mask_out) 3000 { 3001 struct nlattr *tb[NL80211_MESHCONF_ATTR_MAX + 1]; 3002 u32 mask = 0; 3003 3004 #define FILL_IN_MESH_PARAM_IF_SET(table, cfg, param, mask, attr_num, nla_fn) \ 3005 do {\ 3006 if (table[attr_num]) {\ 3007 cfg->param = nla_fn(table[attr_num]); \ 3008 mask |= (1 << (attr_num - 1)); \ 3009 } \ 3010 } while (0);\ 3011 3012 3013 if (!info->attrs[NL80211_ATTR_MESH_CONFIG]) 3014 return -EINVAL; 3015 if (nla_parse_nested(tb, NL80211_MESHCONF_ATTR_MAX, 3016 info->attrs[NL80211_ATTR_MESH_CONFIG], 3017 nl80211_meshconf_params_policy)) 3018 return -EINVAL; 3019 3020 /* This makes sure that there aren't more than 32 mesh config 3021 * parameters (otherwise our bitfield scheme would not work.) */ 3022 BUILD_BUG_ON(NL80211_MESHCONF_ATTR_MAX > 32); 3023 3024 /* Fill in the params struct */ 3025 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshRetryTimeout, 3026 mask, NL80211_MESHCONF_RETRY_TIMEOUT, nla_get_u16); 3027 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConfirmTimeout, 3028 mask, NL80211_MESHCONF_CONFIRM_TIMEOUT, nla_get_u16); 3029 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHoldingTimeout, 3030 mask, NL80211_MESHCONF_HOLDING_TIMEOUT, nla_get_u16); 3031 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxPeerLinks, 3032 mask, NL80211_MESHCONF_MAX_PEER_LINKS, nla_get_u16); 3033 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxRetries, 3034 mask, NL80211_MESHCONF_MAX_RETRIES, nla_get_u8); 3035 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshTTL, 3036 mask, NL80211_MESHCONF_TTL, nla_get_u8); 3037 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, element_ttl, 3038 mask, NL80211_MESHCONF_ELEMENT_TTL, nla_get_u8); 3039 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, auto_open_plinks, 3040 mask, NL80211_MESHCONF_AUTO_OPEN_PLINKS, nla_get_u8); 3041 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPmaxPREQretries, 3042 mask, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES, 3043 nla_get_u8); 3044 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, path_refresh_time, 3045 mask, NL80211_MESHCONF_PATH_REFRESH_TIME, nla_get_u32); 3046 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, min_discovery_timeout, 3047 mask, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT, 3048 nla_get_u16); 3049 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathTimeout, 3050 mask, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT, 3051 nla_get_u32); 3052 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPpreqMinInterval, 3053 mask, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL, 3054 nla_get_u16); 3055 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, 3056 dot11MeshHWMPnetDiameterTraversalTime, 3057 mask, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME, 3058 nla_get_u16); 3059 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, 3060 dot11MeshHWMPRootMode, mask, 3061 NL80211_MESHCONF_HWMP_ROOTMODE, 3062 nla_get_u8); 3063 if (mask_out) 3064 *mask_out = mask; 3065 3066 return 0; 3067 3068 #undef FILL_IN_MESH_PARAM_IF_SET 3069 } 3070 3071 static int nl80211_parse_mesh_setup(struct genl_info *info, 3072 struct mesh_setup *setup) 3073 { 3074 struct nlattr *tb[NL80211_MESH_SETUP_ATTR_MAX + 1]; 3075 3076 if (!info->attrs[NL80211_ATTR_MESH_SETUP]) 3077 return -EINVAL; 3078 if (nla_parse_nested(tb, NL80211_MESH_SETUP_ATTR_MAX, 3079 info->attrs[NL80211_ATTR_MESH_SETUP], 3080 nl80211_mesh_setup_params_policy)) 3081 return -EINVAL; 3082 3083 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL]) 3084 setup->path_sel_proto = 3085 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])) ? 3086 IEEE80211_PATH_PROTOCOL_VENDOR : 3087 IEEE80211_PATH_PROTOCOL_HWMP; 3088 3089 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC]) 3090 setup->path_metric = 3091 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])) ? 3092 IEEE80211_PATH_METRIC_VENDOR : 3093 IEEE80211_PATH_METRIC_AIRTIME; 3094 3095 3096 if (tb[NL80211_MESH_SETUP_IE]) { 3097 struct nlattr *ieattr = 3098 tb[NL80211_MESH_SETUP_IE]; 3099 if (!is_valid_ie_attr(ieattr)) 3100 return -EINVAL; 3101 setup->ie = nla_data(ieattr); 3102 setup->ie_len = nla_len(ieattr); 3103 } 3104 setup->is_authenticated = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AUTH]); 3105 setup->is_secure = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AMPE]); 3106 3107 return 0; 3108 } 3109 3110 static int nl80211_update_mesh_config(struct sk_buff *skb, 3111 struct genl_info *info) 3112 { 3113 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 3114 struct net_device *dev = info->user_ptr[1]; 3115 struct wireless_dev *wdev = dev->ieee80211_ptr; 3116 struct mesh_config cfg; 3117 u32 mask; 3118 int err; 3119 3120 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) 3121 return -EOPNOTSUPP; 3122 3123 if (!rdev->ops->update_mesh_config) 3124 return -EOPNOTSUPP; 3125 3126 err = nl80211_parse_mesh_config(info, &cfg, &mask); 3127 if (err) 3128 return err; 3129 3130 wdev_lock(wdev); 3131 if (!wdev->mesh_id_len) 3132 err = -ENOLINK; 3133 3134 if (!err) 3135 err = rdev->ops->update_mesh_config(&rdev->wiphy, dev, 3136 mask, &cfg); 3137 3138 wdev_unlock(wdev); 3139 3140 return err; 3141 } 3142 3143 static int nl80211_get_reg(struct sk_buff *skb, struct genl_info *info) 3144 { 3145 struct sk_buff *msg; 3146 void *hdr = NULL; 3147 struct nlattr *nl_reg_rules; 3148 unsigned int i; 3149 int err = -EINVAL; 3150 3151 mutex_lock(&cfg80211_mutex); 3152 3153 if (!cfg80211_regdomain) 3154 goto out; 3155 3156 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 3157 if (!msg) { 3158 err = -ENOBUFS; 3159 goto out; 3160 } 3161 3162 hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0, 3163 NL80211_CMD_GET_REG); 3164 if (!hdr) 3165 goto put_failure; 3166 3167 NLA_PUT_STRING(msg, NL80211_ATTR_REG_ALPHA2, 3168 cfg80211_regdomain->alpha2); 3169 3170 nl_reg_rules = nla_nest_start(msg, NL80211_ATTR_REG_RULES); 3171 if (!nl_reg_rules) 3172 goto nla_put_failure; 3173 3174 for (i = 0; i < cfg80211_regdomain->n_reg_rules; i++) { 3175 struct nlattr *nl_reg_rule; 3176 const struct ieee80211_reg_rule *reg_rule; 3177 const struct ieee80211_freq_range *freq_range; 3178 const struct ieee80211_power_rule *power_rule; 3179 3180 reg_rule = &cfg80211_regdomain->reg_rules[i]; 3181 freq_range = ®_rule->freq_range; 3182 power_rule = ®_rule->power_rule; 3183 3184 nl_reg_rule = nla_nest_start(msg, i); 3185 if (!nl_reg_rule) 3186 goto nla_put_failure; 3187 3188 NLA_PUT_U32(msg, NL80211_ATTR_REG_RULE_FLAGS, 3189 reg_rule->flags); 3190 NLA_PUT_U32(msg, NL80211_ATTR_FREQ_RANGE_START, 3191 freq_range->start_freq_khz); 3192 NLA_PUT_U32(msg, NL80211_ATTR_FREQ_RANGE_END, 3193 freq_range->end_freq_khz); 3194 NLA_PUT_U32(msg, NL80211_ATTR_FREQ_RANGE_MAX_BW, 3195 freq_range->max_bandwidth_khz); 3196 NLA_PUT_U32(msg, NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN, 3197 power_rule->max_antenna_gain); 3198 NLA_PUT_U32(msg, NL80211_ATTR_POWER_RULE_MAX_EIRP, 3199 power_rule->max_eirp); 3200 3201 nla_nest_end(msg, nl_reg_rule); 3202 } 3203 3204 nla_nest_end(msg, nl_reg_rules); 3205 3206 genlmsg_end(msg, hdr); 3207 err = genlmsg_reply(msg, info); 3208 goto out; 3209 3210 nla_put_failure: 3211 genlmsg_cancel(msg, hdr); 3212 put_failure: 3213 nlmsg_free(msg); 3214 err = -EMSGSIZE; 3215 out: 3216 mutex_unlock(&cfg80211_mutex); 3217 return err; 3218 } 3219 3220 static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info) 3221 { 3222 struct nlattr *tb[NL80211_REG_RULE_ATTR_MAX + 1]; 3223 struct nlattr *nl_reg_rule; 3224 char *alpha2 = NULL; 3225 int rem_reg_rules = 0, r = 0; 3226 u32 num_rules = 0, rule_idx = 0, size_of_regd; 3227 struct ieee80211_regdomain *rd = NULL; 3228 3229 if (!info->attrs[NL80211_ATTR_REG_ALPHA2]) 3230 return -EINVAL; 3231 3232 if (!info->attrs[NL80211_ATTR_REG_RULES]) 3233 return -EINVAL; 3234 3235 alpha2 = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]); 3236 3237 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES], 3238 rem_reg_rules) { 3239 num_rules++; 3240 if (num_rules > NL80211_MAX_SUPP_REG_RULES) 3241 return -EINVAL; 3242 } 3243 3244 mutex_lock(&cfg80211_mutex); 3245 3246 if (!reg_is_valid_request(alpha2)) { 3247 r = -EINVAL; 3248 goto bad_reg; 3249 } 3250 3251 size_of_regd = sizeof(struct ieee80211_regdomain) + 3252 (num_rules * sizeof(struct ieee80211_reg_rule)); 3253 3254 rd = kzalloc(size_of_regd, GFP_KERNEL); 3255 if (!rd) { 3256 r = -ENOMEM; 3257 goto bad_reg; 3258 } 3259 3260 rd->n_reg_rules = num_rules; 3261 rd->alpha2[0] = alpha2[0]; 3262 rd->alpha2[1] = alpha2[1]; 3263 3264 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES], 3265 rem_reg_rules) { 3266 nla_parse(tb, NL80211_REG_RULE_ATTR_MAX, 3267 nla_data(nl_reg_rule), nla_len(nl_reg_rule), 3268 reg_rule_policy); 3269 r = parse_reg_rule(tb, &rd->reg_rules[rule_idx]); 3270 if (r) 3271 goto bad_reg; 3272 3273 rule_idx++; 3274 3275 if (rule_idx > NL80211_MAX_SUPP_REG_RULES) { 3276 r = -EINVAL; 3277 goto bad_reg; 3278 } 3279 } 3280 3281 BUG_ON(rule_idx != num_rules); 3282 3283 r = set_regdom(rd); 3284 3285 mutex_unlock(&cfg80211_mutex); 3286 3287 return r; 3288 3289 bad_reg: 3290 mutex_unlock(&cfg80211_mutex); 3291 kfree(rd); 3292 return r; 3293 } 3294 3295 static int validate_scan_freqs(struct nlattr *freqs) 3296 { 3297 struct nlattr *attr1, *attr2; 3298 int n_channels = 0, tmp1, tmp2; 3299 3300 nla_for_each_nested(attr1, freqs, tmp1) { 3301 n_channels++; 3302 /* 3303 * Some hardware has a limited channel list for 3304 * scanning, and it is pretty much nonsensical 3305 * to scan for a channel twice, so disallow that 3306 * and don't require drivers to check that the 3307 * channel list they get isn't longer than what 3308 * they can scan, as long as they can scan all 3309 * the channels they registered at once. 3310 */ 3311 nla_for_each_nested(attr2, freqs, tmp2) 3312 if (attr1 != attr2 && 3313 nla_get_u32(attr1) == nla_get_u32(attr2)) 3314 return 0; 3315 } 3316 3317 return n_channels; 3318 } 3319 3320 static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info) 3321 { 3322 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 3323 struct net_device *dev = info->user_ptr[1]; 3324 struct cfg80211_scan_request *request; 3325 struct nlattr *attr; 3326 struct wiphy *wiphy; 3327 int err, tmp, n_ssids = 0, n_channels, i; 3328 size_t ie_len; 3329 3330 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE])) 3331 return -EINVAL; 3332 3333 wiphy = &rdev->wiphy; 3334 3335 if (!rdev->ops->scan) 3336 return -EOPNOTSUPP; 3337 3338 if (rdev->scan_req) 3339 return -EBUSY; 3340 3341 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) { 3342 n_channels = validate_scan_freqs( 3343 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]); 3344 if (!n_channels) 3345 return -EINVAL; 3346 } else { 3347 enum ieee80211_band band; 3348 n_channels = 0; 3349 3350 for (band = 0; band < IEEE80211_NUM_BANDS; band++) 3351 if (wiphy->bands[band]) 3352 n_channels += wiphy->bands[band]->n_channels; 3353 } 3354 3355 if (info->attrs[NL80211_ATTR_SCAN_SSIDS]) 3356 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) 3357 n_ssids++; 3358 3359 if (n_ssids > wiphy->max_scan_ssids) 3360 return -EINVAL; 3361 3362 if (info->attrs[NL80211_ATTR_IE]) 3363 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); 3364 else 3365 ie_len = 0; 3366 3367 if (ie_len > wiphy->max_scan_ie_len) 3368 return -EINVAL; 3369 3370 request = kzalloc(sizeof(*request) 3371 + sizeof(*request->ssids) * n_ssids 3372 + sizeof(*request->channels) * n_channels 3373 + ie_len, GFP_KERNEL); 3374 if (!request) 3375 return -ENOMEM; 3376 3377 if (n_ssids) 3378 request->ssids = (void *)&request->channels[n_channels]; 3379 request->n_ssids = n_ssids; 3380 if (ie_len) { 3381 if (request->ssids) 3382 request->ie = (void *)(request->ssids + n_ssids); 3383 else 3384 request->ie = (void *)(request->channels + n_channels); 3385 } 3386 3387 i = 0; 3388 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) { 3389 /* user specified, bail out if channel not found */ 3390 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_FREQUENCIES], tmp) { 3391 struct ieee80211_channel *chan; 3392 3393 chan = ieee80211_get_channel(wiphy, nla_get_u32(attr)); 3394 3395 if (!chan) { 3396 err = -EINVAL; 3397 goto out_free; 3398 } 3399 3400 /* ignore disabled channels */ 3401 if (chan->flags & IEEE80211_CHAN_DISABLED) 3402 continue; 3403 3404 request->channels[i] = chan; 3405 i++; 3406 } 3407 } else { 3408 enum ieee80211_band band; 3409 3410 /* all channels */ 3411 for (band = 0; band < IEEE80211_NUM_BANDS; band++) { 3412 int j; 3413 if (!wiphy->bands[band]) 3414 continue; 3415 for (j = 0; j < wiphy->bands[band]->n_channels; j++) { 3416 struct ieee80211_channel *chan; 3417 3418 chan = &wiphy->bands[band]->channels[j]; 3419 3420 if (chan->flags & IEEE80211_CHAN_DISABLED) 3421 continue; 3422 3423 request->channels[i] = chan; 3424 i++; 3425 } 3426 } 3427 } 3428 3429 if (!i) { 3430 err = -EINVAL; 3431 goto out_free; 3432 } 3433 3434 request->n_channels = i; 3435 3436 i = 0; 3437 if (info->attrs[NL80211_ATTR_SCAN_SSIDS]) { 3438 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) { 3439 if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) { 3440 err = -EINVAL; 3441 goto out_free; 3442 } 3443 request->ssids[i].ssid_len = nla_len(attr); 3444 memcpy(request->ssids[i].ssid, nla_data(attr), nla_len(attr)); 3445 i++; 3446 } 3447 } 3448 3449 if (info->attrs[NL80211_ATTR_IE]) { 3450 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); 3451 memcpy((void *)request->ie, 3452 nla_data(info->attrs[NL80211_ATTR_IE]), 3453 request->ie_len); 3454 } 3455 3456 for (i = 0; i < IEEE80211_NUM_BANDS; i++) 3457 if (wiphy->bands[i]) 3458 request->rates[i] = 3459 (1 << wiphy->bands[i]->n_bitrates) - 1; 3460 3461 if (info->attrs[NL80211_ATTR_SCAN_SUPP_RATES]) { 3462 nla_for_each_nested(attr, 3463 info->attrs[NL80211_ATTR_SCAN_SUPP_RATES], 3464 tmp) { 3465 enum ieee80211_band band = nla_type(attr); 3466 3467 if (band < 0 || band >= IEEE80211_NUM_BANDS) { 3468 err = -EINVAL; 3469 goto out_free; 3470 } 3471 err = ieee80211_get_ratemask(wiphy->bands[band], 3472 nla_data(attr), 3473 nla_len(attr), 3474 &request->rates[band]); 3475 if (err) 3476 goto out_free; 3477 } 3478 } 3479 3480 request->dev = dev; 3481 request->wiphy = &rdev->wiphy; 3482 3483 rdev->scan_req = request; 3484 err = rdev->ops->scan(&rdev->wiphy, dev, request); 3485 3486 if (!err) { 3487 nl80211_send_scan_start(rdev, dev); 3488 dev_hold(dev); 3489 } else { 3490 out_free: 3491 rdev->scan_req = NULL; 3492 kfree(request); 3493 } 3494 3495 return err; 3496 } 3497 3498 static int nl80211_start_sched_scan(struct sk_buff *skb, 3499 struct genl_info *info) 3500 { 3501 struct cfg80211_sched_scan_request *request; 3502 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 3503 struct net_device *dev = info->user_ptr[1]; 3504 struct nlattr *attr; 3505 struct wiphy *wiphy; 3506 int err, tmp, n_ssids = 0, n_channels, i; 3507 u32 interval; 3508 enum ieee80211_band band; 3509 size_t ie_len; 3510 3511 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) || 3512 !rdev->ops->sched_scan_start) 3513 return -EOPNOTSUPP; 3514 3515 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE])) 3516 return -EINVAL; 3517 3518 if (!info->attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL]) 3519 return -EINVAL; 3520 3521 interval = nla_get_u32(info->attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL]); 3522 if (interval == 0) 3523 return -EINVAL; 3524 3525 wiphy = &rdev->wiphy; 3526 3527 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) { 3528 n_channels = validate_scan_freqs( 3529 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]); 3530 if (!n_channels) 3531 return -EINVAL; 3532 } else { 3533 n_channels = 0; 3534 3535 for (band = 0; band < IEEE80211_NUM_BANDS; band++) 3536 if (wiphy->bands[band]) 3537 n_channels += wiphy->bands[band]->n_channels; 3538 } 3539 3540 if (info->attrs[NL80211_ATTR_SCAN_SSIDS]) 3541 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], 3542 tmp) 3543 n_ssids++; 3544 3545 if (n_ssids > wiphy->max_sched_scan_ssids) 3546 return -EINVAL; 3547 3548 if (info->attrs[NL80211_ATTR_IE]) 3549 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); 3550 else 3551 ie_len = 0; 3552 3553 if (ie_len > wiphy->max_sched_scan_ie_len) 3554 return -EINVAL; 3555 3556 mutex_lock(&rdev->sched_scan_mtx); 3557 3558 if (rdev->sched_scan_req) { 3559 err = -EINPROGRESS; 3560 goto out; 3561 } 3562 3563 request = kzalloc(sizeof(*request) 3564 + sizeof(*request->ssids) * n_ssids 3565 + sizeof(*request->channels) * n_channels 3566 + ie_len, GFP_KERNEL); 3567 if (!request) { 3568 err = -ENOMEM; 3569 goto out; 3570 } 3571 3572 if (n_ssids) 3573 request->ssids = (void *)&request->channels[n_channels]; 3574 request->n_ssids = n_ssids; 3575 if (ie_len) { 3576 if (request->ssids) 3577 request->ie = (void *)(request->ssids + n_ssids); 3578 else 3579 request->ie = (void *)(request->channels + n_channels); 3580 } 3581 3582 i = 0; 3583 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) { 3584 /* user specified, bail out if channel not found */ 3585 nla_for_each_nested(attr, 3586 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES], 3587 tmp) { 3588 struct ieee80211_channel *chan; 3589 3590 chan = ieee80211_get_channel(wiphy, nla_get_u32(attr)); 3591 3592 if (!chan) { 3593 err = -EINVAL; 3594 goto out_free; 3595 } 3596 3597 /* ignore disabled channels */ 3598 if (chan->flags & IEEE80211_CHAN_DISABLED) 3599 continue; 3600 3601 request->channels[i] = chan; 3602 i++; 3603 } 3604 } else { 3605 /* all channels */ 3606 for (band = 0; band < IEEE80211_NUM_BANDS; band++) { 3607 int j; 3608 if (!wiphy->bands[band]) 3609 continue; 3610 for (j = 0; j < wiphy->bands[band]->n_channels; j++) { 3611 struct ieee80211_channel *chan; 3612 3613 chan = &wiphy->bands[band]->channels[j]; 3614 3615 if (chan->flags & IEEE80211_CHAN_DISABLED) 3616 continue; 3617 3618 request->channels[i] = chan; 3619 i++; 3620 } 3621 } 3622 } 3623 3624 if (!i) { 3625 err = -EINVAL; 3626 goto out_free; 3627 } 3628 3629 request->n_channels = i; 3630 3631 i = 0; 3632 if (info->attrs[NL80211_ATTR_SCAN_SSIDS]) { 3633 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], 3634 tmp) { 3635 if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) { 3636 err = -EINVAL; 3637 goto out_free; 3638 } 3639 request->ssids[i].ssid_len = nla_len(attr); 3640 memcpy(request->ssids[i].ssid, nla_data(attr), 3641 nla_len(attr)); 3642 i++; 3643 } 3644 } 3645 3646 if (info->attrs[NL80211_ATTR_IE]) { 3647 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); 3648 memcpy((void *)request->ie, 3649 nla_data(info->attrs[NL80211_ATTR_IE]), 3650 request->ie_len); 3651 } 3652 3653 request->dev = dev; 3654 request->wiphy = &rdev->wiphy; 3655 request->interval = interval; 3656 3657 err = rdev->ops->sched_scan_start(&rdev->wiphy, dev, request); 3658 if (!err) { 3659 rdev->sched_scan_req = request; 3660 nl80211_send_sched_scan(rdev, dev, 3661 NL80211_CMD_START_SCHED_SCAN); 3662 goto out; 3663 } 3664 3665 out_free: 3666 kfree(request); 3667 out: 3668 mutex_unlock(&rdev->sched_scan_mtx); 3669 return err; 3670 } 3671 3672 static int nl80211_stop_sched_scan(struct sk_buff *skb, 3673 struct genl_info *info) 3674 { 3675 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 3676 int err; 3677 3678 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) || 3679 !rdev->ops->sched_scan_stop) 3680 return -EOPNOTSUPP; 3681 3682 mutex_lock(&rdev->sched_scan_mtx); 3683 err = __cfg80211_stop_sched_scan(rdev, false); 3684 mutex_unlock(&rdev->sched_scan_mtx); 3685 3686 return err; 3687 } 3688 3689 static int nl80211_send_bss(struct sk_buff *msg, struct netlink_callback *cb, 3690 u32 seq, int flags, 3691 struct cfg80211_registered_device *rdev, 3692 struct wireless_dev *wdev, 3693 struct cfg80211_internal_bss *intbss) 3694 { 3695 struct cfg80211_bss *res = &intbss->pub; 3696 void *hdr; 3697 struct nlattr *bss; 3698 int i; 3699 3700 ASSERT_WDEV_LOCK(wdev); 3701 3702 hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).pid, seq, flags, 3703 NL80211_CMD_NEW_SCAN_RESULTS); 3704 if (!hdr) 3705 return -1; 3706 3707 genl_dump_check_consistent(cb, hdr, &nl80211_fam); 3708 3709 NLA_PUT_U32(msg, NL80211_ATTR_GENERATION, rdev->bss_generation); 3710 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex); 3711 3712 bss = nla_nest_start(msg, NL80211_ATTR_BSS); 3713 if (!bss) 3714 goto nla_put_failure; 3715 if (!is_zero_ether_addr(res->bssid)) 3716 NLA_PUT(msg, NL80211_BSS_BSSID, ETH_ALEN, res->bssid); 3717 if (res->information_elements && res->len_information_elements) 3718 NLA_PUT(msg, NL80211_BSS_INFORMATION_ELEMENTS, 3719 res->len_information_elements, 3720 res->information_elements); 3721 if (res->beacon_ies && res->len_beacon_ies && 3722 res->beacon_ies != res->information_elements) 3723 NLA_PUT(msg, NL80211_BSS_BEACON_IES, 3724 res->len_beacon_ies, res->beacon_ies); 3725 if (res->tsf) 3726 NLA_PUT_U64(msg, NL80211_BSS_TSF, res->tsf); 3727 if (res->beacon_interval) 3728 NLA_PUT_U16(msg, NL80211_BSS_BEACON_INTERVAL, res->beacon_interval); 3729 NLA_PUT_U16(msg, NL80211_BSS_CAPABILITY, res->capability); 3730 NLA_PUT_U32(msg, NL80211_BSS_FREQUENCY, res->channel->center_freq); 3731 NLA_PUT_U32(msg, NL80211_BSS_SEEN_MS_AGO, 3732 jiffies_to_msecs(jiffies - intbss->ts)); 3733 3734 switch (rdev->wiphy.signal_type) { 3735 case CFG80211_SIGNAL_TYPE_MBM: 3736 NLA_PUT_U32(msg, NL80211_BSS_SIGNAL_MBM, res->signal); 3737 break; 3738 case CFG80211_SIGNAL_TYPE_UNSPEC: 3739 NLA_PUT_U8(msg, NL80211_BSS_SIGNAL_UNSPEC, res->signal); 3740 break; 3741 default: 3742 break; 3743 } 3744 3745 switch (wdev->iftype) { 3746 case NL80211_IFTYPE_P2P_CLIENT: 3747 case NL80211_IFTYPE_STATION: 3748 if (intbss == wdev->current_bss) 3749 NLA_PUT_U32(msg, NL80211_BSS_STATUS, 3750 NL80211_BSS_STATUS_ASSOCIATED); 3751 else for (i = 0; i < MAX_AUTH_BSSES; i++) { 3752 if (intbss != wdev->auth_bsses[i]) 3753 continue; 3754 NLA_PUT_U32(msg, NL80211_BSS_STATUS, 3755 NL80211_BSS_STATUS_AUTHENTICATED); 3756 break; 3757 } 3758 break; 3759 case NL80211_IFTYPE_ADHOC: 3760 if (intbss == wdev->current_bss) 3761 NLA_PUT_U32(msg, NL80211_BSS_STATUS, 3762 NL80211_BSS_STATUS_IBSS_JOINED); 3763 break; 3764 default: 3765 break; 3766 } 3767 3768 nla_nest_end(msg, bss); 3769 3770 return genlmsg_end(msg, hdr); 3771 3772 nla_put_failure: 3773 genlmsg_cancel(msg, hdr); 3774 return -EMSGSIZE; 3775 } 3776 3777 static int nl80211_dump_scan(struct sk_buff *skb, 3778 struct netlink_callback *cb) 3779 { 3780 struct cfg80211_registered_device *rdev; 3781 struct net_device *dev; 3782 struct cfg80211_internal_bss *scan; 3783 struct wireless_dev *wdev; 3784 int start = cb->args[1], idx = 0; 3785 int err; 3786 3787 err = nl80211_prepare_netdev_dump(skb, cb, &rdev, &dev); 3788 if (err) 3789 return err; 3790 3791 wdev = dev->ieee80211_ptr; 3792 3793 wdev_lock(wdev); 3794 spin_lock_bh(&rdev->bss_lock); 3795 cfg80211_bss_expire(rdev); 3796 3797 cb->seq = rdev->bss_generation; 3798 3799 list_for_each_entry(scan, &rdev->bss_list, list) { 3800 if (++idx <= start) 3801 continue; 3802 if (nl80211_send_bss(skb, cb, 3803 cb->nlh->nlmsg_seq, NLM_F_MULTI, 3804 rdev, wdev, scan) < 0) { 3805 idx--; 3806 break; 3807 } 3808 } 3809 3810 spin_unlock_bh(&rdev->bss_lock); 3811 wdev_unlock(wdev); 3812 3813 cb->args[1] = idx; 3814 nl80211_finish_netdev_dump(rdev); 3815 3816 return skb->len; 3817 } 3818 3819 static int nl80211_send_survey(struct sk_buff *msg, u32 pid, u32 seq, 3820 int flags, struct net_device *dev, 3821 struct survey_info *survey) 3822 { 3823 void *hdr; 3824 struct nlattr *infoattr; 3825 3826 hdr = nl80211hdr_put(msg, pid, seq, flags, 3827 NL80211_CMD_NEW_SURVEY_RESULTS); 3828 if (!hdr) 3829 return -ENOMEM; 3830 3831 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex); 3832 3833 infoattr = nla_nest_start(msg, NL80211_ATTR_SURVEY_INFO); 3834 if (!infoattr) 3835 goto nla_put_failure; 3836 3837 NLA_PUT_U32(msg, NL80211_SURVEY_INFO_FREQUENCY, 3838 survey->channel->center_freq); 3839 if (survey->filled & SURVEY_INFO_NOISE_DBM) 3840 NLA_PUT_U8(msg, NL80211_SURVEY_INFO_NOISE, 3841 survey->noise); 3842 if (survey->filled & SURVEY_INFO_IN_USE) 3843 NLA_PUT_FLAG(msg, NL80211_SURVEY_INFO_IN_USE); 3844 if (survey->filled & SURVEY_INFO_CHANNEL_TIME) 3845 NLA_PUT_U64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME, 3846 survey->channel_time); 3847 if (survey->filled & SURVEY_INFO_CHANNEL_TIME_BUSY) 3848 NLA_PUT_U64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_BUSY, 3849 survey->channel_time_busy); 3850 if (survey->filled & SURVEY_INFO_CHANNEL_TIME_EXT_BUSY) 3851 NLA_PUT_U64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_EXT_BUSY, 3852 survey->channel_time_ext_busy); 3853 if (survey->filled & SURVEY_INFO_CHANNEL_TIME_RX) 3854 NLA_PUT_U64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_RX, 3855 survey->channel_time_rx); 3856 if (survey->filled & SURVEY_INFO_CHANNEL_TIME_TX) 3857 NLA_PUT_U64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_TX, 3858 survey->channel_time_tx); 3859 3860 nla_nest_end(msg, infoattr); 3861 3862 return genlmsg_end(msg, hdr); 3863 3864 nla_put_failure: 3865 genlmsg_cancel(msg, hdr); 3866 return -EMSGSIZE; 3867 } 3868 3869 static int nl80211_dump_survey(struct sk_buff *skb, 3870 struct netlink_callback *cb) 3871 { 3872 struct survey_info survey; 3873 struct cfg80211_registered_device *dev; 3874 struct net_device *netdev; 3875 int survey_idx = cb->args[1]; 3876 int res; 3877 3878 res = nl80211_prepare_netdev_dump(skb, cb, &dev, &netdev); 3879 if (res) 3880 return res; 3881 3882 if (!dev->ops->dump_survey) { 3883 res = -EOPNOTSUPP; 3884 goto out_err; 3885 } 3886 3887 while (1) { 3888 struct ieee80211_channel *chan; 3889 3890 res = dev->ops->dump_survey(&dev->wiphy, netdev, survey_idx, 3891 &survey); 3892 if (res == -ENOENT) 3893 break; 3894 if (res) 3895 goto out_err; 3896 3897 /* Survey without a channel doesn't make sense */ 3898 if (!survey.channel) { 3899 res = -EINVAL; 3900 goto out; 3901 } 3902 3903 chan = ieee80211_get_channel(&dev->wiphy, 3904 survey.channel->center_freq); 3905 if (!chan || chan->flags & IEEE80211_CHAN_DISABLED) { 3906 survey_idx++; 3907 continue; 3908 } 3909 3910 if (nl80211_send_survey(skb, 3911 NETLINK_CB(cb->skb).pid, 3912 cb->nlh->nlmsg_seq, NLM_F_MULTI, 3913 netdev, 3914 &survey) < 0) 3915 goto out; 3916 survey_idx++; 3917 } 3918 3919 out: 3920 cb->args[1] = survey_idx; 3921 res = skb->len; 3922 out_err: 3923 nl80211_finish_netdev_dump(dev); 3924 return res; 3925 } 3926 3927 static bool nl80211_valid_auth_type(enum nl80211_auth_type auth_type) 3928 { 3929 return auth_type <= NL80211_AUTHTYPE_MAX; 3930 } 3931 3932 static bool nl80211_valid_wpa_versions(u32 wpa_versions) 3933 { 3934 return !(wpa_versions & ~(NL80211_WPA_VERSION_1 | 3935 NL80211_WPA_VERSION_2)); 3936 } 3937 3938 static bool nl80211_valid_akm_suite(u32 akm) 3939 { 3940 return akm == WLAN_AKM_SUITE_8021X || 3941 akm == WLAN_AKM_SUITE_PSK; 3942 } 3943 3944 static bool nl80211_valid_cipher_suite(u32 cipher) 3945 { 3946 return cipher == WLAN_CIPHER_SUITE_WEP40 || 3947 cipher == WLAN_CIPHER_SUITE_WEP104 || 3948 cipher == WLAN_CIPHER_SUITE_TKIP || 3949 cipher == WLAN_CIPHER_SUITE_CCMP || 3950 cipher == WLAN_CIPHER_SUITE_AES_CMAC; 3951 } 3952 3953 3954 static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info) 3955 { 3956 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 3957 struct net_device *dev = info->user_ptr[1]; 3958 struct ieee80211_channel *chan; 3959 const u8 *bssid, *ssid, *ie = NULL; 3960 int err, ssid_len, ie_len = 0; 3961 enum nl80211_auth_type auth_type; 3962 struct key_parse key; 3963 bool local_state_change; 3964 3965 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE])) 3966 return -EINVAL; 3967 3968 if (!info->attrs[NL80211_ATTR_MAC]) 3969 return -EINVAL; 3970 3971 if (!info->attrs[NL80211_ATTR_AUTH_TYPE]) 3972 return -EINVAL; 3973 3974 if (!info->attrs[NL80211_ATTR_SSID]) 3975 return -EINVAL; 3976 3977 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ]) 3978 return -EINVAL; 3979 3980 err = nl80211_parse_key(info, &key); 3981 if (err) 3982 return err; 3983 3984 if (key.idx >= 0) { 3985 if (key.type != -1 && key.type != NL80211_KEYTYPE_GROUP) 3986 return -EINVAL; 3987 if (!key.p.key || !key.p.key_len) 3988 return -EINVAL; 3989 if ((key.p.cipher != WLAN_CIPHER_SUITE_WEP40 || 3990 key.p.key_len != WLAN_KEY_LEN_WEP40) && 3991 (key.p.cipher != WLAN_CIPHER_SUITE_WEP104 || 3992 key.p.key_len != WLAN_KEY_LEN_WEP104)) 3993 return -EINVAL; 3994 if (key.idx > 4) 3995 return -EINVAL; 3996 } else { 3997 key.p.key_len = 0; 3998 key.p.key = NULL; 3999 } 4000 4001 if (key.idx >= 0) { 4002 int i; 4003 bool ok = false; 4004 for (i = 0; i < rdev->wiphy.n_cipher_suites; i++) { 4005 if (key.p.cipher == rdev->wiphy.cipher_suites[i]) { 4006 ok = true; 4007 break; 4008 } 4009 } 4010 if (!ok) 4011 return -EINVAL; 4012 } 4013 4014 if (!rdev->ops->auth) 4015 return -EOPNOTSUPP; 4016 4017 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION && 4018 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) 4019 return -EOPNOTSUPP; 4020 4021 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]); 4022 chan = ieee80211_get_channel(&rdev->wiphy, 4023 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ])); 4024 if (!chan || (chan->flags & IEEE80211_CHAN_DISABLED)) 4025 return -EINVAL; 4026 4027 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]); 4028 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]); 4029 4030 if (info->attrs[NL80211_ATTR_IE]) { 4031 ie = nla_data(info->attrs[NL80211_ATTR_IE]); 4032 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); 4033 } 4034 4035 auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]); 4036 if (!nl80211_valid_auth_type(auth_type)) 4037 return -EINVAL; 4038 4039 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE]; 4040 4041 return cfg80211_mlme_auth(rdev, dev, chan, auth_type, bssid, 4042 ssid, ssid_len, ie, ie_len, 4043 key.p.key, key.p.key_len, key.idx, 4044 local_state_change); 4045 } 4046 4047 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev, 4048 struct genl_info *info, 4049 struct cfg80211_crypto_settings *settings, 4050 int cipher_limit) 4051 { 4052 memset(settings, 0, sizeof(*settings)); 4053 4054 settings->control_port = info->attrs[NL80211_ATTR_CONTROL_PORT]; 4055 4056 if (info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) { 4057 u16 proto; 4058 proto = nla_get_u16( 4059 info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]); 4060 settings->control_port_ethertype = cpu_to_be16(proto); 4061 if (!(rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) && 4062 proto != ETH_P_PAE) 4063 return -EINVAL; 4064 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT]) 4065 settings->control_port_no_encrypt = true; 4066 } else 4067 settings->control_port_ethertype = cpu_to_be16(ETH_P_PAE); 4068 4069 if (info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]) { 4070 void *data; 4071 int len, i; 4072 4073 data = nla_data(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]); 4074 len = nla_len(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]); 4075 settings->n_ciphers_pairwise = len / sizeof(u32); 4076 4077 if (len % sizeof(u32)) 4078 return -EINVAL; 4079 4080 if (settings->n_ciphers_pairwise > cipher_limit) 4081 return -EINVAL; 4082 4083 memcpy(settings->ciphers_pairwise, data, len); 4084 4085 for (i = 0; i < settings->n_ciphers_pairwise; i++) 4086 if (!nl80211_valid_cipher_suite( 4087 settings->ciphers_pairwise[i])) 4088 return -EINVAL; 4089 } 4090 4091 if (info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]) { 4092 settings->cipher_group = 4093 nla_get_u32(info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]); 4094 if (!nl80211_valid_cipher_suite(settings->cipher_group)) 4095 return -EINVAL; 4096 } 4097 4098 if (info->attrs[NL80211_ATTR_WPA_VERSIONS]) { 4099 settings->wpa_versions = 4100 nla_get_u32(info->attrs[NL80211_ATTR_WPA_VERSIONS]); 4101 if (!nl80211_valid_wpa_versions(settings->wpa_versions)) 4102 return -EINVAL; 4103 } 4104 4105 if (info->attrs[NL80211_ATTR_AKM_SUITES]) { 4106 void *data; 4107 int len, i; 4108 4109 data = nla_data(info->attrs[NL80211_ATTR_AKM_SUITES]); 4110 len = nla_len(info->attrs[NL80211_ATTR_AKM_SUITES]); 4111 settings->n_akm_suites = len / sizeof(u32); 4112 4113 if (len % sizeof(u32)) 4114 return -EINVAL; 4115 4116 memcpy(settings->akm_suites, data, len); 4117 4118 for (i = 0; i < settings->n_ciphers_pairwise; i++) 4119 if (!nl80211_valid_akm_suite(settings->akm_suites[i])) 4120 return -EINVAL; 4121 } 4122 4123 return 0; 4124 } 4125 4126 static int nl80211_associate(struct sk_buff *skb, struct genl_info *info) 4127 { 4128 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 4129 struct net_device *dev = info->user_ptr[1]; 4130 struct cfg80211_crypto_settings crypto; 4131 struct ieee80211_channel *chan; 4132 const u8 *bssid, *ssid, *ie = NULL, *prev_bssid = NULL; 4133 int err, ssid_len, ie_len = 0; 4134 bool use_mfp = false; 4135 4136 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE])) 4137 return -EINVAL; 4138 4139 if (!info->attrs[NL80211_ATTR_MAC] || 4140 !info->attrs[NL80211_ATTR_SSID] || 4141 !info->attrs[NL80211_ATTR_WIPHY_FREQ]) 4142 return -EINVAL; 4143 4144 if (!rdev->ops->assoc) 4145 return -EOPNOTSUPP; 4146 4147 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION && 4148 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) 4149 return -EOPNOTSUPP; 4150 4151 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]); 4152 4153 chan = ieee80211_get_channel(&rdev->wiphy, 4154 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ])); 4155 if (!chan || (chan->flags & IEEE80211_CHAN_DISABLED)) 4156 return -EINVAL; 4157 4158 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]); 4159 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]); 4160 4161 if (info->attrs[NL80211_ATTR_IE]) { 4162 ie = nla_data(info->attrs[NL80211_ATTR_IE]); 4163 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); 4164 } 4165 4166 if (info->attrs[NL80211_ATTR_USE_MFP]) { 4167 enum nl80211_mfp mfp = 4168 nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]); 4169 if (mfp == NL80211_MFP_REQUIRED) 4170 use_mfp = true; 4171 else if (mfp != NL80211_MFP_NO) 4172 return -EINVAL; 4173 } 4174 4175 if (info->attrs[NL80211_ATTR_PREV_BSSID]) 4176 prev_bssid = nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]); 4177 4178 err = nl80211_crypto_settings(rdev, info, &crypto, 1); 4179 if (!err) 4180 err = cfg80211_mlme_assoc(rdev, dev, chan, bssid, prev_bssid, 4181 ssid, ssid_len, ie, ie_len, use_mfp, 4182 &crypto); 4183 4184 return err; 4185 } 4186 4187 static int nl80211_deauthenticate(struct sk_buff *skb, struct genl_info *info) 4188 { 4189 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 4190 struct net_device *dev = info->user_ptr[1]; 4191 const u8 *ie = NULL, *bssid; 4192 int ie_len = 0; 4193 u16 reason_code; 4194 bool local_state_change; 4195 4196 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE])) 4197 return -EINVAL; 4198 4199 if (!info->attrs[NL80211_ATTR_MAC]) 4200 return -EINVAL; 4201 4202 if (!info->attrs[NL80211_ATTR_REASON_CODE]) 4203 return -EINVAL; 4204 4205 if (!rdev->ops->deauth) 4206 return -EOPNOTSUPP; 4207 4208 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION && 4209 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) 4210 return -EOPNOTSUPP; 4211 4212 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]); 4213 4214 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]); 4215 if (reason_code == 0) { 4216 /* Reason Code 0 is reserved */ 4217 return -EINVAL; 4218 } 4219 4220 if (info->attrs[NL80211_ATTR_IE]) { 4221 ie = nla_data(info->attrs[NL80211_ATTR_IE]); 4222 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); 4223 } 4224 4225 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE]; 4226 4227 return cfg80211_mlme_deauth(rdev, dev, bssid, ie, ie_len, reason_code, 4228 local_state_change); 4229 } 4230 4231 static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info) 4232 { 4233 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 4234 struct net_device *dev = info->user_ptr[1]; 4235 const u8 *ie = NULL, *bssid; 4236 int ie_len = 0; 4237 u16 reason_code; 4238 bool local_state_change; 4239 4240 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE])) 4241 return -EINVAL; 4242 4243 if (!info->attrs[NL80211_ATTR_MAC]) 4244 return -EINVAL; 4245 4246 if (!info->attrs[NL80211_ATTR_REASON_CODE]) 4247 return -EINVAL; 4248 4249 if (!rdev->ops->disassoc) 4250 return -EOPNOTSUPP; 4251 4252 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION && 4253 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) 4254 return -EOPNOTSUPP; 4255 4256 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]); 4257 4258 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]); 4259 if (reason_code == 0) { 4260 /* Reason Code 0 is reserved */ 4261 return -EINVAL; 4262 } 4263 4264 if (info->attrs[NL80211_ATTR_IE]) { 4265 ie = nla_data(info->attrs[NL80211_ATTR_IE]); 4266 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); 4267 } 4268 4269 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE]; 4270 4271 return cfg80211_mlme_disassoc(rdev, dev, bssid, ie, ie_len, reason_code, 4272 local_state_change); 4273 } 4274 4275 static bool 4276 nl80211_parse_mcast_rate(struct cfg80211_registered_device *rdev, 4277 int mcast_rate[IEEE80211_NUM_BANDS], 4278 int rateval) 4279 { 4280 struct wiphy *wiphy = &rdev->wiphy; 4281 bool found = false; 4282 int band, i; 4283 4284 for (band = 0; band < IEEE80211_NUM_BANDS; band++) { 4285 struct ieee80211_supported_band *sband; 4286 4287 sband = wiphy->bands[band]; 4288 if (!sband) 4289 continue; 4290 4291 for (i = 0; i < sband->n_bitrates; i++) { 4292 if (sband->bitrates[i].bitrate == rateval) { 4293 mcast_rate[band] = i + 1; 4294 found = true; 4295 break; 4296 } 4297 } 4298 } 4299 4300 return found; 4301 } 4302 4303 static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info) 4304 { 4305 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 4306 struct net_device *dev = info->user_ptr[1]; 4307 struct cfg80211_ibss_params ibss; 4308 struct wiphy *wiphy; 4309 struct cfg80211_cached_keys *connkeys = NULL; 4310 int err; 4311 4312 memset(&ibss, 0, sizeof(ibss)); 4313 4314 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE])) 4315 return -EINVAL; 4316 4317 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] || 4318 !info->attrs[NL80211_ATTR_SSID] || 4319 !nla_len(info->attrs[NL80211_ATTR_SSID])) 4320 return -EINVAL; 4321 4322 ibss.beacon_interval = 100; 4323 4324 if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) { 4325 ibss.beacon_interval = 4326 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]); 4327 if (ibss.beacon_interval < 1 || ibss.beacon_interval > 10000) 4328 return -EINVAL; 4329 } 4330 4331 if (!rdev->ops->join_ibss) 4332 return -EOPNOTSUPP; 4333 4334 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC) 4335 return -EOPNOTSUPP; 4336 4337 wiphy = &rdev->wiphy; 4338 4339 if (info->attrs[NL80211_ATTR_MAC]) 4340 ibss.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]); 4341 ibss.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]); 4342 ibss.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]); 4343 4344 if (info->attrs[NL80211_ATTR_IE]) { 4345 ibss.ie = nla_data(info->attrs[NL80211_ATTR_IE]); 4346 ibss.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); 4347 } 4348 4349 ibss.channel = ieee80211_get_channel(wiphy, 4350 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ])); 4351 if (!ibss.channel || 4352 ibss.channel->flags & IEEE80211_CHAN_NO_IBSS || 4353 ibss.channel->flags & IEEE80211_CHAN_DISABLED) 4354 return -EINVAL; 4355 4356 ibss.channel_fixed = !!info->attrs[NL80211_ATTR_FREQ_FIXED]; 4357 ibss.privacy = !!info->attrs[NL80211_ATTR_PRIVACY]; 4358 4359 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) { 4360 u8 *rates = 4361 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]); 4362 int n_rates = 4363 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]); 4364 struct ieee80211_supported_band *sband = 4365 wiphy->bands[ibss.channel->band]; 4366 int err; 4367 4368 err = ieee80211_get_ratemask(sband, rates, n_rates, 4369 &ibss.basic_rates); 4370 if (err) 4371 return err; 4372 } 4373 4374 if (info->attrs[NL80211_ATTR_MCAST_RATE] && 4375 !nl80211_parse_mcast_rate(rdev, ibss.mcast_rate, 4376 nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE]))) 4377 return -EINVAL; 4378 4379 if (ibss.privacy && info->attrs[NL80211_ATTR_KEYS]) { 4380 connkeys = nl80211_parse_connkeys(rdev, 4381 info->attrs[NL80211_ATTR_KEYS]); 4382 if (IS_ERR(connkeys)) 4383 return PTR_ERR(connkeys); 4384 } 4385 4386 err = cfg80211_join_ibss(rdev, dev, &ibss, connkeys); 4387 if (err) 4388 kfree(connkeys); 4389 return err; 4390 } 4391 4392 static int nl80211_leave_ibss(struct sk_buff *skb, struct genl_info *info) 4393 { 4394 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 4395 struct net_device *dev = info->user_ptr[1]; 4396 4397 if (!rdev->ops->leave_ibss) 4398 return -EOPNOTSUPP; 4399 4400 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC) 4401 return -EOPNOTSUPP; 4402 4403 return cfg80211_leave_ibss(rdev, dev, false); 4404 } 4405 4406 #ifdef CONFIG_NL80211_TESTMODE 4407 static struct genl_multicast_group nl80211_testmode_mcgrp = { 4408 .name = "testmode", 4409 }; 4410 4411 static int nl80211_testmode_do(struct sk_buff *skb, struct genl_info *info) 4412 { 4413 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 4414 int err; 4415 4416 if (!info->attrs[NL80211_ATTR_TESTDATA]) 4417 return -EINVAL; 4418 4419 err = -EOPNOTSUPP; 4420 if (rdev->ops->testmode_cmd) { 4421 rdev->testmode_info = info; 4422 err = rdev->ops->testmode_cmd(&rdev->wiphy, 4423 nla_data(info->attrs[NL80211_ATTR_TESTDATA]), 4424 nla_len(info->attrs[NL80211_ATTR_TESTDATA])); 4425 rdev->testmode_info = NULL; 4426 } 4427 4428 return err; 4429 } 4430 4431 static int nl80211_testmode_dump(struct sk_buff *skb, 4432 struct netlink_callback *cb) 4433 { 4434 struct cfg80211_registered_device *dev; 4435 int err; 4436 long phy_idx; 4437 void *data = NULL; 4438 int data_len = 0; 4439 4440 if (cb->args[0]) { 4441 /* 4442 * 0 is a valid index, but not valid for args[0], 4443 * so we need to offset by 1. 4444 */ 4445 phy_idx = cb->args[0] - 1; 4446 } else { 4447 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize, 4448 nl80211_fam.attrbuf, nl80211_fam.maxattr, 4449 nl80211_policy); 4450 if (err) 4451 return err; 4452 if (!nl80211_fam.attrbuf[NL80211_ATTR_WIPHY]) 4453 return -EINVAL; 4454 phy_idx = nla_get_u32(nl80211_fam.attrbuf[NL80211_ATTR_WIPHY]); 4455 if (nl80211_fam.attrbuf[NL80211_ATTR_TESTDATA]) 4456 cb->args[1] = 4457 (long)nl80211_fam.attrbuf[NL80211_ATTR_TESTDATA]; 4458 } 4459 4460 if (cb->args[1]) { 4461 data = nla_data((void *)cb->args[1]); 4462 data_len = nla_len((void *)cb->args[1]); 4463 } 4464 4465 mutex_lock(&cfg80211_mutex); 4466 dev = cfg80211_rdev_by_wiphy_idx(phy_idx); 4467 if (!dev) { 4468 mutex_unlock(&cfg80211_mutex); 4469 return -ENOENT; 4470 } 4471 cfg80211_lock_rdev(dev); 4472 mutex_unlock(&cfg80211_mutex); 4473 4474 if (!dev->ops->testmode_dump) { 4475 err = -EOPNOTSUPP; 4476 goto out_err; 4477 } 4478 4479 while (1) { 4480 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).pid, 4481 cb->nlh->nlmsg_seq, NLM_F_MULTI, 4482 NL80211_CMD_TESTMODE); 4483 struct nlattr *tmdata; 4484 4485 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, dev->wiphy_idx) < 0) { 4486 genlmsg_cancel(skb, hdr); 4487 break; 4488 } 4489 4490 tmdata = nla_nest_start(skb, NL80211_ATTR_TESTDATA); 4491 if (!tmdata) { 4492 genlmsg_cancel(skb, hdr); 4493 break; 4494 } 4495 err = dev->ops->testmode_dump(&dev->wiphy, skb, cb, 4496 data, data_len); 4497 nla_nest_end(skb, tmdata); 4498 4499 if (err == -ENOBUFS || err == -ENOENT) { 4500 genlmsg_cancel(skb, hdr); 4501 break; 4502 } else if (err) { 4503 genlmsg_cancel(skb, hdr); 4504 goto out_err; 4505 } 4506 4507 genlmsg_end(skb, hdr); 4508 } 4509 4510 err = skb->len; 4511 /* see above */ 4512 cb->args[0] = phy_idx + 1; 4513 out_err: 4514 cfg80211_unlock_rdev(dev); 4515 return err; 4516 } 4517 4518 static struct sk_buff * 4519 __cfg80211_testmode_alloc_skb(struct cfg80211_registered_device *rdev, 4520 int approxlen, u32 pid, u32 seq, gfp_t gfp) 4521 { 4522 struct sk_buff *skb; 4523 void *hdr; 4524 struct nlattr *data; 4525 4526 skb = nlmsg_new(approxlen + 100, gfp); 4527 if (!skb) 4528 return NULL; 4529 4530 hdr = nl80211hdr_put(skb, pid, seq, 0, NL80211_CMD_TESTMODE); 4531 if (!hdr) { 4532 kfree_skb(skb); 4533 return NULL; 4534 } 4535 4536 NLA_PUT_U32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx); 4537 data = nla_nest_start(skb, NL80211_ATTR_TESTDATA); 4538 4539 ((void **)skb->cb)[0] = rdev; 4540 ((void **)skb->cb)[1] = hdr; 4541 ((void **)skb->cb)[2] = data; 4542 4543 return skb; 4544 4545 nla_put_failure: 4546 kfree_skb(skb); 4547 return NULL; 4548 } 4549 4550 struct sk_buff *cfg80211_testmode_alloc_reply_skb(struct wiphy *wiphy, 4551 int approxlen) 4552 { 4553 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); 4554 4555 if (WARN_ON(!rdev->testmode_info)) 4556 return NULL; 4557 4558 return __cfg80211_testmode_alloc_skb(rdev, approxlen, 4559 rdev->testmode_info->snd_pid, 4560 rdev->testmode_info->snd_seq, 4561 GFP_KERNEL); 4562 } 4563 EXPORT_SYMBOL(cfg80211_testmode_alloc_reply_skb); 4564 4565 int cfg80211_testmode_reply(struct sk_buff *skb) 4566 { 4567 struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0]; 4568 void *hdr = ((void **)skb->cb)[1]; 4569 struct nlattr *data = ((void **)skb->cb)[2]; 4570 4571 if (WARN_ON(!rdev->testmode_info)) { 4572 kfree_skb(skb); 4573 return -EINVAL; 4574 } 4575 4576 nla_nest_end(skb, data); 4577 genlmsg_end(skb, hdr); 4578 return genlmsg_reply(skb, rdev->testmode_info); 4579 } 4580 EXPORT_SYMBOL(cfg80211_testmode_reply); 4581 4582 struct sk_buff *cfg80211_testmode_alloc_event_skb(struct wiphy *wiphy, 4583 int approxlen, gfp_t gfp) 4584 { 4585 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); 4586 4587 return __cfg80211_testmode_alloc_skb(rdev, approxlen, 0, 0, gfp); 4588 } 4589 EXPORT_SYMBOL(cfg80211_testmode_alloc_event_skb); 4590 4591 void cfg80211_testmode_event(struct sk_buff *skb, gfp_t gfp) 4592 { 4593 void *hdr = ((void **)skb->cb)[1]; 4594 struct nlattr *data = ((void **)skb->cb)[2]; 4595 4596 nla_nest_end(skb, data); 4597 genlmsg_end(skb, hdr); 4598 genlmsg_multicast(skb, 0, nl80211_testmode_mcgrp.id, gfp); 4599 } 4600 EXPORT_SYMBOL(cfg80211_testmode_event); 4601 #endif 4602 4603 static int nl80211_connect(struct sk_buff *skb, struct genl_info *info) 4604 { 4605 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 4606 struct net_device *dev = info->user_ptr[1]; 4607 struct cfg80211_connect_params connect; 4608 struct wiphy *wiphy; 4609 struct cfg80211_cached_keys *connkeys = NULL; 4610 int err; 4611 4612 memset(&connect, 0, sizeof(connect)); 4613 4614 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE])) 4615 return -EINVAL; 4616 4617 if (!info->attrs[NL80211_ATTR_SSID] || 4618 !nla_len(info->attrs[NL80211_ATTR_SSID])) 4619 return -EINVAL; 4620 4621 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) { 4622 connect.auth_type = 4623 nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]); 4624 if (!nl80211_valid_auth_type(connect.auth_type)) 4625 return -EINVAL; 4626 } else 4627 connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC; 4628 4629 connect.privacy = info->attrs[NL80211_ATTR_PRIVACY]; 4630 4631 err = nl80211_crypto_settings(rdev, info, &connect.crypto, 4632 NL80211_MAX_NR_CIPHER_SUITES); 4633 if (err) 4634 return err; 4635 4636 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION && 4637 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) 4638 return -EOPNOTSUPP; 4639 4640 wiphy = &rdev->wiphy; 4641 4642 if (info->attrs[NL80211_ATTR_MAC]) 4643 connect.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]); 4644 connect.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]); 4645 connect.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]); 4646 4647 if (info->attrs[NL80211_ATTR_IE]) { 4648 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]); 4649 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); 4650 } 4651 4652 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) { 4653 connect.channel = 4654 ieee80211_get_channel(wiphy, 4655 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ])); 4656 if (!connect.channel || 4657 connect.channel->flags & IEEE80211_CHAN_DISABLED) 4658 return -EINVAL; 4659 } 4660 4661 if (connect.privacy && info->attrs[NL80211_ATTR_KEYS]) { 4662 connkeys = nl80211_parse_connkeys(rdev, 4663 info->attrs[NL80211_ATTR_KEYS]); 4664 if (IS_ERR(connkeys)) 4665 return PTR_ERR(connkeys); 4666 } 4667 4668 err = cfg80211_connect(rdev, dev, &connect, connkeys); 4669 if (err) 4670 kfree(connkeys); 4671 return err; 4672 } 4673 4674 static int nl80211_disconnect(struct sk_buff *skb, struct genl_info *info) 4675 { 4676 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 4677 struct net_device *dev = info->user_ptr[1]; 4678 u16 reason; 4679 4680 if (!info->attrs[NL80211_ATTR_REASON_CODE]) 4681 reason = WLAN_REASON_DEAUTH_LEAVING; 4682 else 4683 reason = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]); 4684 4685 if (reason == 0) 4686 return -EINVAL; 4687 4688 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION && 4689 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) 4690 return -EOPNOTSUPP; 4691 4692 return cfg80211_disconnect(rdev, dev, reason, true); 4693 } 4694 4695 static int nl80211_wiphy_netns(struct sk_buff *skb, struct genl_info *info) 4696 { 4697 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 4698 struct net *net; 4699 int err; 4700 u32 pid; 4701 4702 if (!info->attrs[NL80211_ATTR_PID]) 4703 return -EINVAL; 4704 4705 pid = nla_get_u32(info->attrs[NL80211_ATTR_PID]); 4706 4707 net = get_net_ns_by_pid(pid); 4708 if (IS_ERR(net)) 4709 return PTR_ERR(net); 4710 4711 err = 0; 4712 4713 /* check if anything to do */ 4714 if (!net_eq(wiphy_net(&rdev->wiphy), net)) 4715 err = cfg80211_switch_netns(rdev, net); 4716 4717 put_net(net); 4718 return err; 4719 } 4720 4721 static int nl80211_setdel_pmksa(struct sk_buff *skb, struct genl_info *info) 4722 { 4723 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 4724 int (*rdev_ops)(struct wiphy *wiphy, struct net_device *dev, 4725 struct cfg80211_pmksa *pmksa) = NULL; 4726 struct net_device *dev = info->user_ptr[1]; 4727 struct cfg80211_pmksa pmksa; 4728 4729 memset(&pmksa, 0, sizeof(struct cfg80211_pmksa)); 4730 4731 if (!info->attrs[NL80211_ATTR_MAC]) 4732 return -EINVAL; 4733 4734 if (!info->attrs[NL80211_ATTR_PMKID]) 4735 return -EINVAL; 4736 4737 pmksa.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]); 4738 pmksa.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]); 4739 4740 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION && 4741 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) 4742 return -EOPNOTSUPP; 4743 4744 switch (info->genlhdr->cmd) { 4745 case NL80211_CMD_SET_PMKSA: 4746 rdev_ops = rdev->ops->set_pmksa; 4747 break; 4748 case NL80211_CMD_DEL_PMKSA: 4749 rdev_ops = rdev->ops->del_pmksa; 4750 break; 4751 default: 4752 WARN_ON(1); 4753 break; 4754 } 4755 4756 if (!rdev_ops) 4757 return -EOPNOTSUPP; 4758 4759 return rdev_ops(&rdev->wiphy, dev, &pmksa); 4760 } 4761 4762 static int nl80211_flush_pmksa(struct sk_buff *skb, struct genl_info *info) 4763 { 4764 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 4765 struct net_device *dev = info->user_ptr[1]; 4766 4767 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION && 4768 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) 4769 return -EOPNOTSUPP; 4770 4771 if (!rdev->ops->flush_pmksa) 4772 return -EOPNOTSUPP; 4773 4774 return rdev->ops->flush_pmksa(&rdev->wiphy, dev); 4775 } 4776 4777 static int nl80211_remain_on_channel(struct sk_buff *skb, 4778 struct genl_info *info) 4779 { 4780 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 4781 struct net_device *dev = info->user_ptr[1]; 4782 struct ieee80211_channel *chan; 4783 struct sk_buff *msg; 4784 void *hdr; 4785 u64 cookie; 4786 enum nl80211_channel_type channel_type = NL80211_CHAN_NO_HT; 4787 u32 freq, duration; 4788 int err; 4789 4790 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] || 4791 !info->attrs[NL80211_ATTR_DURATION]) 4792 return -EINVAL; 4793 4794 duration = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]); 4795 4796 /* 4797 * We should be on that channel for at least one jiffie, 4798 * and more than 5 seconds seems excessive. 4799 */ 4800 if (!duration || !msecs_to_jiffies(duration) || 4801 duration > rdev->wiphy.max_remain_on_channel_duration) 4802 return -EINVAL; 4803 4804 if (!rdev->ops->remain_on_channel) 4805 return -EOPNOTSUPP; 4806 4807 if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) { 4808 channel_type = nla_get_u32( 4809 info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]); 4810 if (channel_type != NL80211_CHAN_NO_HT && 4811 channel_type != NL80211_CHAN_HT20 && 4812 channel_type != NL80211_CHAN_HT40PLUS && 4813 channel_type != NL80211_CHAN_HT40MINUS) 4814 return -EINVAL; 4815 } 4816 4817 freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]); 4818 chan = rdev_freq_to_chan(rdev, freq, channel_type); 4819 if (chan == NULL) 4820 return -EINVAL; 4821 4822 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 4823 if (!msg) 4824 return -ENOMEM; 4825 4826 hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0, 4827 NL80211_CMD_REMAIN_ON_CHANNEL); 4828 4829 if (IS_ERR(hdr)) { 4830 err = PTR_ERR(hdr); 4831 goto free_msg; 4832 } 4833 4834 err = rdev->ops->remain_on_channel(&rdev->wiphy, dev, chan, 4835 channel_type, duration, &cookie); 4836 4837 if (err) 4838 goto free_msg; 4839 4840 NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, cookie); 4841 4842 genlmsg_end(msg, hdr); 4843 4844 return genlmsg_reply(msg, info); 4845 4846 nla_put_failure: 4847 err = -ENOBUFS; 4848 free_msg: 4849 nlmsg_free(msg); 4850 return err; 4851 } 4852 4853 static int nl80211_cancel_remain_on_channel(struct sk_buff *skb, 4854 struct genl_info *info) 4855 { 4856 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 4857 struct net_device *dev = info->user_ptr[1]; 4858 u64 cookie; 4859 4860 if (!info->attrs[NL80211_ATTR_COOKIE]) 4861 return -EINVAL; 4862 4863 if (!rdev->ops->cancel_remain_on_channel) 4864 return -EOPNOTSUPP; 4865 4866 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]); 4867 4868 return rdev->ops->cancel_remain_on_channel(&rdev->wiphy, dev, cookie); 4869 } 4870 4871 static u32 rateset_to_mask(struct ieee80211_supported_band *sband, 4872 u8 *rates, u8 rates_len) 4873 { 4874 u8 i; 4875 u32 mask = 0; 4876 4877 for (i = 0; i < rates_len; i++) { 4878 int rate = (rates[i] & 0x7f) * 5; 4879 int ridx; 4880 for (ridx = 0; ridx < sband->n_bitrates; ridx++) { 4881 struct ieee80211_rate *srate = 4882 &sband->bitrates[ridx]; 4883 if (rate == srate->bitrate) { 4884 mask |= 1 << ridx; 4885 break; 4886 } 4887 } 4888 if (ridx == sband->n_bitrates) 4889 return 0; /* rate not found */ 4890 } 4891 4892 return mask; 4893 } 4894 4895 static const struct nla_policy nl80211_txattr_policy[NL80211_TXRATE_MAX + 1] = { 4896 [NL80211_TXRATE_LEGACY] = { .type = NLA_BINARY, 4897 .len = NL80211_MAX_SUPP_RATES }, 4898 }; 4899 4900 static int nl80211_set_tx_bitrate_mask(struct sk_buff *skb, 4901 struct genl_info *info) 4902 { 4903 struct nlattr *tb[NL80211_TXRATE_MAX + 1]; 4904 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 4905 struct cfg80211_bitrate_mask mask; 4906 int rem, i; 4907 struct net_device *dev = info->user_ptr[1]; 4908 struct nlattr *tx_rates; 4909 struct ieee80211_supported_band *sband; 4910 4911 if (info->attrs[NL80211_ATTR_TX_RATES] == NULL) 4912 return -EINVAL; 4913 4914 if (!rdev->ops->set_bitrate_mask) 4915 return -EOPNOTSUPP; 4916 4917 memset(&mask, 0, sizeof(mask)); 4918 /* Default to all rates enabled */ 4919 for (i = 0; i < IEEE80211_NUM_BANDS; i++) { 4920 sband = rdev->wiphy.bands[i]; 4921 mask.control[i].legacy = 4922 sband ? (1 << sband->n_bitrates) - 1 : 0; 4923 } 4924 4925 /* 4926 * The nested attribute uses enum nl80211_band as the index. This maps 4927 * directly to the enum ieee80211_band values used in cfg80211. 4928 */ 4929 nla_for_each_nested(tx_rates, info->attrs[NL80211_ATTR_TX_RATES], rem) 4930 { 4931 enum ieee80211_band band = nla_type(tx_rates); 4932 if (band < 0 || band >= IEEE80211_NUM_BANDS) 4933 return -EINVAL; 4934 sband = rdev->wiphy.bands[band]; 4935 if (sband == NULL) 4936 return -EINVAL; 4937 nla_parse(tb, NL80211_TXRATE_MAX, nla_data(tx_rates), 4938 nla_len(tx_rates), nl80211_txattr_policy); 4939 if (tb[NL80211_TXRATE_LEGACY]) { 4940 mask.control[band].legacy = rateset_to_mask( 4941 sband, 4942 nla_data(tb[NL80211_TXRATE_LEGACY]), 4943 nla_len(tb[NL80211_TXRATE_LEGACY])); 4944 if (mask.control[band].legacy == 0) 4945 return -EINVAL; 4946 } 4947 } 4948 4949 return rdev->ops->set_bitrate_mask(&rdev->wiphy, dev, NULL, &mask); 4950 } 4951 4952 static int nl80211_register_mgmt(struct sk_buff *skb, struct genl_info *info) 4953 { 4954 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 4955 struct net_device *dev = info->user_ptr[1]; 4956 u16 frame_type = IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION; 4957 4958 if (!info->attrs[NL80211_ATTR_FRAME_MATCH]) 4959 return -EINVAL; 4960 4961 if (info->attrs[NL80211_ATTR_FRAME_TYPE]) 4962 frame_type = nla_get_u16(info->attrs[NL80211_ATTR_FRAME_TYPE]); 4963 4964 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION && 4965 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC && 4966 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT && 4967 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP && 4968 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN && 4969 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT && 4970 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) 4971 return -EOPNOTSUPP; 4972 4973 /* not much point in registering if we can't reply */ 4974 if (!rdev->ops->mgmt_tx) 4975 return -EOPNOTSUPP; 4976 4977 return cfg80211_mlme_register_mgmt(dev->ieee80211_ptr, info->snd_pid, 4978 frame_type, 4979 nla_data(info->attrs[NL80211_ATTR_FRAME_MATCH]), 4980 nla_len(info->attrs[NL80211_ATTR_FRAME_MATCH])); 4981 } 4982 4983 static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info) 4984 { 4985 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 4986 struct net_device *dev = info->user_ptr[1]; 4987 struct ieee80211_channel *chan; 4988 enum nl80211_channel_type channel_type = NL80211_CHAN_NO_HT; 4989 bool channel_type_valid = false; 4990 u32 freq; 4991 int err; 4992 void *hdr; 4993 u64 cookie; 4994 struct sk_buff *msg; 4995 unsigned int wait = 0; 4996 bool offchan; 4997 4998 if (!info->attrs[NL80211_ATTR_FRAME] || 4999 !info->attrs[NL80211_ATTR_WIPHY_FREQ]) 5000 return -EINVAL; 5001 5002 if (!rdev->ops->mgmt_tx) 5003 return -EOPNOTSUPP; 5004 5005 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION && 5006 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC && 5007 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT && 5008 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP && 5009 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN && 5010 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT && 5011 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) 5012 return -EOPNOTSUPP; 5013 5014 if (info->attrs[NL80211_ATTR_DURATION]) { 5015 if (!rdev->ops->mgmt_tx_cancel_wait) 5016 return -EINVAL; 5017 wait = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]); 5018 } 5019 5020 if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) { 5021 channel_type = nla_get_u32( 5022 info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]); 5023 if (channel_type != NL80211_CHAN_NO_HT && 5024 channel_type != NL80211_CHAN_HT20 && 5025 channel_type != NL80211_CHAN_HT40PLUS && 5026 channel_type != NL80211_CHAN_HT40MINUS) 5027 return -EINVAL; 5028 channel_type_valid = true; 5029 } 5030 5031 offchan = info->attrs[NL80211_ATTR_OFFCHANNEL_TX_OK]; 5032 5033 freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]); 5034 chan = rdev_freq_to_chan(rdev, freq, channel_type); 5035 if (chan == NULL) 5036 return -EINVAL; 5037 5038 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 5039 if (!msg) 5040 return -ENOMEM; 5041 5042 hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0, 5043 NL80211_CMD_FRAME); 5044 5045 if (IS_ERR(hdr)) { 5046 err = PTR_ERR(hdr); 5047 goto free_msg; 5048 } 5049 err = cfg80211_mlme_mgmt_tx(rdev, dev, chan, offchan, channel_type, 5050 channel_type_valid, wait, 5051 nla_data(info->attrs[NL80211_ATTR_FRAME]), 5052 nla_len(info->attrs[NL80211_ATTR_FRAME]), 5053 &cookie); 5054 if (err) 5055 goto free_msg; 5056 5057 NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, cookie); 5058 5059 genlmsg_end(msg, hdr); 5060 return genlmsg_reply(msg, info); 5061 5062 nla_put_failure: 5063 err = -ENOBUFS; 5064 free_msg: 5065 nlmsg_free(msg); 5066 return err; 5067 } 5068 5069 static int nl80211_tx_mgmt_cancel_wait(struct sk_buff *skb, struct genl_info *info) 5070 { 5071 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 5072 struct net_device *dev = info->user_ptr[1]; 5073 u64 cookie; 5074 5075 if (!info->attrs[NL80211_ATTR_COOKIE]) 5076 return -EINVAL; 5077 5078 if (!rdev->ops->mgmt_tx_cancel_wait) 5079 return -EOPNOTSUPP; 5080 5081 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION && 5082 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC && 5083 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT && 5084 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP && 5085 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN && 5086 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) 5087 return -EOPNOTSUPP; 5088 5089 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]); 5090 5091 return rdev->ops->mgmt_tx_cancel_wait(&rdev->wiphy, dev, cookie); 5092 } 5093 5094 static int nl80211_set_power_save(struct sk_buff *skb, struct genl_info *info) 5095 { 5096 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 5097 struct wireless_dev *wdev; 5098 struct net_device *dev = info->user_ptr[1]; 5099 u8 ps_state; 5100 bool state; 5101 int err; 5102 5103 if (!info->attrs[NL80211_ATTR_PS_STATE]) 5104 return -EINVAL; 5105 5106 ps_state = nla_get_u32(info->attrs[NL80211_ATTR_PS_STATE]); 5107 5108 if (ps_state != NL80211_PS_DISABLED && ps_state != NL80211_PS_ENABLED) 5109 return -EINVAL; 5110 5111 wdev = dev->ieee80211_ptr; 5112 5113 if (!rdev->ops->set_power_mgmt) 5114 return -EOPNOTSUPP; 5115 5116 state = (ps_state == NL80211_PS_ENABLED) ? true : false; 5117 5118 if (state == wdev->ps) 5119 return 0; 5120 5121 err = rdev->ops->set_power_mgmt(wdev->wiphy, dev, state, 5122 wdev->ps_timeout); 5123 if (!err) 5124 wdev->ps = state; 5125 return err; 5126 } 5127 5128 static int nl80211_get_power_save(struct sk_buff *skb, struct genl_info *info) 5129 { 5130 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 5131 enum nl80211_ps_state ps_state; 5132 struct wireless_dev *wdev; 5133 struct net_device *dev = info->user_ptr[1]; 5134 struct sk_buff *msg; 5135 void *hdr; 5136 int err; 5137 5138 wdev = dev->ieee80211_ptr; 5139 5140 if (!rdev->ops->set_power_mgmt) 5141 return -EOPNOTSUPP; 5142 5143 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 5144 if (!msg) 5145 return -ENOMEM; 5146 5147 hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0, 5148 NL80211_CMD_GET_POWER_SAVE); 5149 if (!hdr) { 5150 err = -ENOBUFS; 5151 goto free_msg; 5152 } 5153 5154 if (wdev->ps) 5155 ps_state = NL80211_PS_ENABLED; 5156 else 5157 ps_state = NL80211_PS_DISABLED; 5158 5159 NLA_PUT_U32(msg, NL80211_ATTR_PS_STATE, ps_state); 5160 5161 genlmsg_end(msg, hdr); 5162 return genlmsg_reply(msg, info); 5163 5164 nla_put_failure: 5165 err = -ENOBUFS; 5166 free_msg: 5167 nlmsg_free(msg); 5168 return err; 5169 } 5170 5171 static struct nla_policy 5172 nl80211_attr_cqm_policy[NL80211_ATTR_CQM_MAX + 1] __read_mostly = { 5173 [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_U32 }, 5174 [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U32 }, 5175 [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 }, 5176 }; 5177 5178 static int nl80211_set_cqm_rssi(struct genl_info *info, 5179 s32 threshold, u32 hysteresis) 5180 { 5181 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 5182 struct wireless_dev *wdev; 5183 struct net_device *dev = info->user_ptr[1]; 5184 5185 if (threshold > 0) 5186 return -EINVAL; 5187 5188 wdev = dev->ieee80211_ptr; 5189 5190 if (!rdev->ops->set_cqm_rssi_config) 5191 return -EOPNOTSUPP; 5192 5193 if (wdev->iftype != NL80211_IFTYPE_STATION && 5194 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT) 5195 return -EOPNOTSUPP; 5196 5197 return rdev->ops->set_cqm_rssi_config(wdev->wiphy, dev, 5198 threshold, hysteresis); 5199 } 5200 5201 static int nl80211_set_cqm(struct sk_buff *skb, struct genl_info *info) 5202 { 5203 struct nlattr *attrs[NL80211_ATTR_CQM_MAX + 1]; 5204 struct nlattr *cqm; 5205 int err; 5206 5207 cqm = info->attrs[NL80211_ATTR_CQM]; 5208 if (!cqm) { 5209 err = -EINVAL; 5210 goto out; 5211 } 5212 5213 err = nla_parse_nested(attrs, NL80211_ATTR_CQM_MAX, cqm, 5214 nl80211_attr_cqm_policy); 5215 if (err) 5216 goto out; 5217 5218 if (attrs[NL80211_ATTR_CQM_RSSI_THOLD] && 5219 attrs[NL80211_ATTR_CQM_RSSI_HYST]) { 5220 s32 threshold; 5221 u32 hysteresis; 5222 threshold = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_THOLD]); 5223 hysteresis = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_HYST]); 5224 err = nl80211_set_cqm_rssi(info, threshold, hysteresis); 5225 } else 5226 err = -EINVAL; 5227 5228 out: 5229 return err; 5230 } 5231 5232 static int nl80211_join_mesh(struct sk_buff *skb, struct genl_info *info) 5233 { 5234 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 5235 struct net_device *dev = info->user_ptr[1]; 5236 struct mesh_config cfg; 5237 struct mesh_setup setup; 5238 int err; 5239 5240 /* start with default */ 5241 memcpy(&cfg, &default_mesh_config, sizeof(cfg)); 5242 memcpy(&setup, &default_mesh_setup, sizeof(setup)); 5243 5244 if (info->attrs[NL80211_ATTR_MESH_CONFIG]) { 5245 /* and parse parameters if given */ 5246 err = nl80211_parse_mesh_config(info, &cfg, NULL); 5247 if (err) 5248 return err; 5249 } 5250 5251 if (!info->attrs[NL80211_ATTR_MESH_ID] || 5252 !nla_len(info->attrs[NL80211_ATTR_MESH_ID])) 5253 return -EINVAL; 5254 5255 setup.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]); 5256 setup.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]); 5257 5258 if (info->attrs[NL80211_ATTR_MESH_SETUP]) { 5259 /* parse additional setup parameters if given */ 5260 err = nl80211_parse_mesh_setup(info, &setup); 5261 if (err) 5262 return err; 5263 } 5264 5265 return cfg80211_join_mesh(rdev, dev, &setup, &cfg); 5266 } 5267 5268 static int nl80211_leave_mesh(struct sk_buff *skb, struct genl_info *info) 5269 { 5270 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 5271 struct net_device *dev = info->user_ptr[1]; 5272 5273 return cfg80211_leave_mesh(rdev, dev); 5274 } 5275 5276 static int nl80211_get_wowlan(struct sk_buff *skb, struct genl_info *info) 5277 { 5278 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 5279 struct sk_buff *msg; 5280 void *hdr; 5281 5282 if (!rdev->wiphy.wowlan.flags && !rdev->wiphy.wowlan.n_patterns) 5283 return -EOPNOTSUPP; 5284 5285 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 5286 if (!msg) 5287 return -ENOMEM; 5288 5289 hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0, 5290 NL80211_CMD_GET_WOWLAN); 5291 if (!hdr) 5292 goto nla_put_failure; 5293 5294 if (rdev->wowlan) { 5295 struct nlattr *nl_wowlan; 5296 5297 nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS); 5298 if (!nl_wowlan) 5299 goto nla_put_failure; 5300 5301 if (rdev->wowlan->any) 5302 NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_ANY); 5303 if (rdev->wowlan->disconnect) 5304 NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_DISCONNECT); 5305 if (rdev->wowlan->magic_pkt) 5306 NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT); 5307 if (rdev->wowlan->gtk_rekey_failure) 5308 NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE); 5309 if (rdev->wowlan->eap_identity_req) 5310 NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST); 5311 if (rdev->wowlan->four_way_handshake) 5312 NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE); 5313 if (rdev->wowlan->rfkill_release) 5314 NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE); 5315 if (rdev->wowlan->n_patterns) { 5316 struct nlattr *nl_pats, *nl_pat; 5317 int i, pat_len; 5318 5319 nl_pats = nla_nest_start(msg, 5320 NL80211_WOWLAN_TRIG_PKT_PATTERN); 5321 if (!nl_pats) 5322 goto nla_put_failure; 5323 5324 for (i = 0; i < rdev->wowlan->n_patterns; i++) { 5325 nl_pat = nla_nest_start(msg, i + 1); 5326 if (!nl_pat) 5327 goto nla_put_failure; 5328 pat_len = rdev->wowlan->patterns[i].pattern_len; 5329 NLA_PUT(msg, NL80211_WOWLAN_PKTPAT_MASK, 5330 DIV_ROUND_UP(pat_len, 8), 5331 rdev->wowlan->patterns[i].mask); 5332 NLA_PUT(msg, NL80211_WOWLAN_PKTPAT_PATTERN, 5333 pat_len, 5334 rdev->wowlan->patterns[i].pattern); 5335 nla_nest_end(msg, nl_pat); 5336 } 5337 nla_nest_end(msg, nl_pats); 5338 } 5339 5340 nla_nest_end(msg, nl_wowlan); 5341 } 5342 5343 genlmsg_end(msg, hdr); 5344 return genlmsg_reply(msg, info); 5345 5346 nla_put_failure: 5347 nlmsg_free(msg); 5348 return -ENOBUFS; 5349 } 5350 5351 static int nl80211_set_wowlan(struct sk_buff *skb, struct genl_info *info) 5352 { 5353 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 5354 struct nlattr *tb[NUM_NL80211_WOWLAN_TRIG]; 5355 struct cfg80211_wowlan no_triggers = {}; 5356 struct cfg80211_wowlan new_triggers = {}; 5357 struct wiphy_wowlan_support *wowlan = &rdev->wiphy.wowlan; 5358 int err, i; 5359 5360 if (!rdev->wiphy.wowlan.flags && !rdev->wiphy.wowlan.n_patterns) 5361 return -EOPNOTSUPP; 5362 5363 if (!info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]) 5364 goto no_triggers; 5365 5366 err = nla_parse(tb, MAX_NL80211_WOWLAN_TRIG, 5367 nla_data(info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]), 5368 nla_len(info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]), 5369 nl80211_wowlan_policy); 5370 if (err) 5371 return err; 5372 5373 if (tb[NL80211_WOWLAN_TRIG_ANY]) { 5374 if (!(wowlan->flags & WIPHY_WOWLAN_ANY)) 5375 return -EINVAL; 5376 new_triggers.any = true; 5377 } 5378 5379 if (tb[NL80211_WOWLAN_TRIG_DISCONNECT]) { 5380 if (!(wowlan->flags & WIPHY_WOWLAN_DISCONNECT)) 5381 return -EINVAL; 5382 new_triggers.disconnect = true; 5383 } 5384 5385 if (tb[NL80211_WOWLAN_TRIG_MAGIC_PKT]) { 5386 if (!(wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT)) 5387 return -EINVAL; 5388 new_triggers.magic_pkt = true; 5389 } 5390 5391 if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED]) 5392 return -EINVAL; 5393 5394 if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE]) { 5395 if (!(wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE)) 5396 return -EINVAL; 5397 new_triggers.gtk_rekey_failure = true; 5398 } 5399 5400 if (tb[NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST]) { 5401 if (!(wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ)) 5402 return -EINVAL; 5403 new_triggers.eap_identity_req = true; 5404 } 5405 5406 if (tb[NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE]) { 5407 if (!(wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE)) 5408 return -EINVAL; 5409 new_triggers.four_way_handshake = true; 5410 } 5411 5412 if (tb[NL80211_WOWLAN_TRIG_RFKILL_RELEASE]) { 5413 if (!(wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE)) 5414 return -EINVAL; 5415 new_triggers.rfkill_release = true; 5416 } 5417 5418 if (tb[NL80211_WOWLAN_TRIG_PKT_PATTERN]) { 5419 struct nlattr *pat; 5420 int n_patterns = 0; 5421 int rem, pat_len, mask_len; 5422 struct nlattr *pat_tb[NUM_NL80211_WOWLAN_PKTPAT]; 5423 5424 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN], 5425 rem) 5426 n_patterns++; 5427 if (n_patterns > wowlan->n_patterns) 5428 return -EINVAL; 5429 5430 new_triggers.patterns = kcalloc(n_patterns, 5431 sizeof(new_triggers.patterns[0]), 5432 GFP_KERNEL); 5433 if (!new_triggers.patterns) 5434 return -ENOMEM; 5435 5436 new_triggers.n_patterns = n_patterns; 5437 i = 0; 5438 5439 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN], 5440 rem) { 5441 nla_parse(pat_tb, MAX_NL80211_WOWLAN_PKTPAT, 5442 nla_data(pat), nla_len(pat), NULL); 5443 err = -EINVAL; 5444 if (!pat_tb[NL80211_WOWLAN_PKTPAT_MASK] || 5445 !pat_tb[NL80211_WOWLAN_PKTPAT_PATTERN]) 5446 goto error; 5447 pat_len = nla_len(pat_tb[NL80211_WOWLAN_PKTPAT_PATTERN]); 5448 mask_len = DIV_ROUND_UP(pat_len, 8); 5449 if (nla_len(pat_tb[NL80211_WOWLAN_PKTPAT_MASK]) != 5450 mask_len) 5451 goto error; 5452 if (pat_len > wowlan->pattern_max_len || 5453 pat_len < wowlan->pattern_min_len) 5454 goto error; 5455 5456 new_triggers.patterns[i].mask = 5457 kmalloc(mask_len + pat_len, GFP_KERNEL); 5458 if (!new_triggers.patterns[i].mask) { 5459 err = -ENOMEM; 5460 goto error; 5461 } 5462 new_triggers.patterns[i].pattern = 5463 new_triggers.patterns[i].mask + mask_len; 5464 memcpy(new_triggers.patterns[i].mask, 5465 nla_data(pat_tb[NL80211_WOWLAN_PKTPAT_MASK]), 5466 mask_len); 5467 new_triggers.patterns[i].pattern_len = pat_len; 5468 memcpy(new_triggers.patterns[i].pattern, 5469 nla_data(pat_tb[NL80211_WOWLAN_PKTPAT_PATTERN]), 5470 pat_len); 5471 i++; 5472 } 5473 } 5474 5475 if (memcmp(&new_triggers, &no_triggers, sizeof(new_triggers))) { 5476 struct cfg80211_wowlan *ntrig; 5477 ntrig = kmemdup(&new_triggers, sizeof(new_triggers), 5478 GFP_KERNEL); 5479 if (!ntrig) { 5480 err = -ENOMEM; 5481 goto error; 5482 } 5483 cfg80211_rdev_free_wowlan(rdev); 5484 rdev->wowlan = ntrig; 5485 } else { 5486 no_triggers: 5487 cfg80211_rdev_free_wowlan(rdev); 5488 rdev->wowlan = NULL; 5489 } 5490 5491 return 0; 5492 error: 5493 for (i = 0; i < new_triggers.n_patterns; i++) 5494 kfree(new_triggers.patterns[i].mask); 5495 kfree(new_triggers.patterns); 5496 return err; 5497 } 5498 5499 static int nl80211_set_rekey_data(struct sk_buff *skb, struct genl_info *info) 5500 { 5501 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 5502 struct net_device *dev = info->user_ptr[1]; 5503 struct wireless_dev *wdev = dev->ieee80211_ptr; 5504 struct nlattr *tb[NUM_NL80211_REKEY_DATA]; 5505 struct cfg80211_gtk_rekey_data rekey_data; 5506 int err; 5507 5508 if (!info->attrs[NL80211_ATTR_REKEY_DATA]) 5509 return -EINVAL; 5510 5511 err = nla_parse(tb, MAX_NL80211_REKEY_DATA, 5512 nla_data(info->attrs[NL80211_ATTR_REKEY_DATA]), 5513 nla_len(info->attrs[NL80211_ATTR_REKEY_DATA]), 5514 nl80211_rekey_policy); 5515 if (err) 5516 return err; 5517 5518 if (nla_len(tb[NL80211_REKEY_DATA_REPLAY_CTR]) != NL80211_REPLAY_CTR_LEN) 5519 return -ERANGE; 5520 if (nla_len(tb[NL80211_REKEY_DATA_KEK]) != NL80211_KEK_LEN) 5521 return -ERANGE; 5522 if (nla_len(tb[NL80211_REKEY_DATA_KCK]) != NL80211_KCK_LEN) 5523 return -ERANGE; 5524 5525 memcpy(rekey_data.kek, nla_data(tb[NL80211_REKEY_DATA_KEK]), 5526 NL80211_KEK_LEN); 5527 memcpy(rekey_data.kck, nla_data(tb[NL80211_REKEY_DATA_KCK]), 5528 NL80211_KCK_LEN); 5529 memcpy(rekey_data.replay_ctr, 5530 nla_data(tb[NL80211_REKEY_DATA_REPLAY_CTR]), 5531 NL80211_REPLAY_CTR_LEN); 5532 5533 wdev_lock(wdev); 5534 if (!wdev->current_bss) { 5535 err = -ENOTCONN; 5536 goto out; 5537 } 5538 5539 if (!rdev->ops->set_rekey_data) { 5540 err = -EOPNOTSUPP; 5541 goto out; 5542 } 5543 5544 err = rdev->ops->set_rekey_data(&rdev->wiphy, dev, &rekey_data); 5545 out: 5546 wdev_unlock(wdev); 5547 return err; 5548 } 5549 5550 #define NL80211_FLAG_NEED_WIPHY 0x01 5551 #define NL80211_FLAG_NEED_NETDEV 0x02 5552 #define NL80211_FLAG_NEED_RTNL 0x04 5553 #define NL80211_FLAG_CHECK_NETDEV_UP 0x08 5554 #define NL80211_FLAG_NEED_NETDEV_UP (NL80211_FLAG_NEED_NETDEV |\ 5555 NL80211_FLAG_CHECK_NETDEV_UP) 5556 5557 static int nl80211_pre_doit(struct genl_ops *ops, struct sk_buff *skb, 5558 struct genl_info *info) 5559 { 5560 struct cfg80211_registered_device *rdev; 5561 struct net_device *dev; 5562 int err; 5563 bool rtnl = ops->internal_flags & NL80211_FLAG_NEED_RTNL; 5564 5565 if (rtnl) 5566 rtnl_lock(); 5567 5568 if (ops->internal_flags & NL80211_FLAG_NEED_WIPHY) { 5569 rdev = cfg80211_get_dev_from_info(info); 5570 if (IS_ERR(rdev)) { 5571 if (rtnl) 5572 rtnl_unlock(); 5573 return PTR_ERR(rdev); 5574 } 5575 info->user_ptr[0] = rdev; 5576 } else if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV) { 5577 err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev); 5578 if (err) { 5579 if (rtnl) 5580 rtnl_unlock(); 5581 return err; 5582 } 5583 if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP && 5584 !netif_running(dev)) { 5585 cfg80211_unlock_rdev(rdev); 5586 dev_put(dev); 5587 if (rtnl) 5588 rtnl_unlock(); 5589 return -ENETDOWN; 5590 } 5591 info->user_ptr[0] = rdev; 5592 info->user_ptr[1] = dev; 5593 } 5594 5595 return 0; 5596 } 5597 5598 static void nl80211_post_doit(struct genl_ops *ops, struct sk_buff *skb, 5599 struct genl_info *info) 5600 { 5601 if (info->user_ptr[0]) 5602 cfg80211_unlock_rdev(info->user_ptr[0]); 5603 if (info->user_ptr[1]) 5604 dev_put(info->user_ptr[1]); 5605 if (ops->internal_flags & NL80211_FLAG_NEED_RTNL) 5606 rtnl_unlock(); 5607 } 5608 5609 static struct genl_ops nl80211_ops[] = { 5610 { 5611 .cmd = NL80211_CMD_GET_WIPHY, 5612 .doit = nl80211_get_wiphy, 5613 .dumpit = nl80211_dump_wiphy, 5614 .policy = nl80211_policy, 5615 /* can be retrieved by unprivileged users */ 5616 .internal_flags = NL80211_FLAG_NEED_WIPHY, 5617 }, 5618 { 5619 .cmd = NL80211_CMD_SET_WIPHY, 5620 .doit = nl80211_set_wiphy, 5621 .policy = nl80211_policy, 5622 .flags = GENL_ADMIN_PERM, 5623 .internal_flags = NL80211_FLAG_NEED_RTNL, 5624 }, 5625 { 5626 .cmd = NL80211_CMD_GET_INTERFACE, 5627 .doit = nl80211_get_interface, 5628 .dumpit = nl80211_dump_interface, 5629 .policy = nl80211_policy, 5630 /* can be retrieved by unprivileged users */ 5631 .internal_flags = NL80211_FLAG_NEED_NETDEV, 5632 }, 5633 { 5634 .cmd = NL80211_CMD_SET_INTERFACE, 5635 .doit = nl80211_set_interface, 5636 .policy = nl80211_policy, 5637 .flags = GENL_ADMIN_PERM, 5638 .internal_flags = NL80211_FLAG_NEED_NETDEV | 5639 NL80211_FLAG_NEED_RTNL, 5640 }, 5641 { 5642 .cmd = NL80211_CMD_NEW_INTERFACE, 5643 .doit = nl80211_new_interface, 5644 .policy = nl80211_policy, 5645 .flags = GENL_ADMIN_PERM, 5646 .internal_flags = NL80211_FLAG_NEED_WIPHY | 5647 NL80211_FLAG_NEED_RTNL, 5648 }, 5649 { 5650 .cmd = NL80211_CMD_DEL_INTERFACE, 5651 .doit = nl80211_del_interface, 5652 .policy = nl80211_policy, 5653 .flags = GENL_ADMIN_PERM, 5654 .internal_flags = NL80211_FLAG_NEED_NETDEV | 5655 NL80211_FLAG_NEED_RTNL, 5656 }, 5657 { 5658 .cmd = NL80211_CMD_GET_KEY, 5659 .doit = nl80211_get_key, 5660 .policy = nl80211_policy, 5661 .flags = GENL_ADMIN_PERM, 5662 .internal_flags = NL80211_FLAG_NEED_NETDEV | 5663 NL80211_FLAG_NEED_RTNL, 5664 }, 5665 { 5666 .cmd = NL80211_CMD_SET_KEY, 5667 .doit = nl80211_set_key, 5668 .policy = nl80211_policy, 5669 .flags = GENL_ADMIN_PERM, 5670 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 5671 NL80211_FLAG_NEED_RTNL, 5672 }, 5673 { 5674 .cmd = NL80211_CMD_NEW_KEY, 5675 .doit = nl80211_new_key, 5676 .policy = nl80211_policy, 5677 .flags = GENL_ADMIN_PERM, 5678 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 5679 NL80211_FLAG_NEED_RTNL, 5680 }, 5681 { 5682 .cmd = NL80211_CMD_DEL_KEY, 5683 .doit = nl80211_del_key, 5684 .policy = nl80211_policy, 5685 .flags = GENL_ADMIN_PERM, 5686 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 5687 NL80211_FLAG_NEED_RTNL, 5688 }, 5689 { 5690 .cmd = NL80211_CMD_SET_BEACON, 5691 .policy = nl80211_policy, 5692 .flags = GENL_ADMIN_PERM, 5693 .doit = nl80211_addset_beacon, 5694 .internal_flags = NL80211_FLAG_NEED_NETDEV | 5695 NL80211_FLAG_NEED_RTNL, 5696 }, 5697 { 5698 .cmd = NL80211_CMD_NEW_BEACON, 5699 .policy = nl80211_policy, 5700 .flags = GENL_ADMIN_PERM, 5701 .doit = nl80211_addset_beacon, 5702 .internal_flags = NL80211_FLAG_NEED_NETDEV | 5703 NL80211_FLAG_NEED_RTNL, 5704 }, 5705 { 5706 .cmd = NL80211_CMD_DEL_BEACON, 5707 .policy = nl80211_policy, 5708 .flags = GENL_ADMIN_PERM, 5709 .doit = nl80211_del_beacon, 5710 .internal_flags = NL80211_FLAG_NEED_NETDEV | 5711 NL80211_FLAG_NEED_RTNL, 5712 }, 5713 { 5714 .cmd = NL80211_CMD_GET_STATION, 5715 .doit = nl80211_get_station, 5716 .dumpit = nl80211_dump_station, 5717 .policy = nl80211_policy, 5718 .internal_flags = NL80211_FLAG_NEED_NETDEV | 5719 NL80211_FLAG_NEED_RTNL, 5720 }, 5721 { 5722 .cmd = NL80211_CMD_SET_STATION, 5723 .doit = nl80211_set_station, 5724 .policy = nl80211_policy, 5725 .flags = GENL_ADMIN_PERM, 5726 .internal_flags = NL80211_FLAG_NEED_NETDEV | 5727 NL80211_FLAG_NEED_RTNL, 5728 }, 5729 { 5730 .cmd = NL80211_CMD_NEW_STATION, 5731 .doit = nl80211_new_station, 5732 .policy = nl80211_policy, 5733 .flags = GENL_ADMIN_PERM, 5734 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 5735 NL80211_FLAG_NEED_RTNL, 5736 }, 5737 { 5738 .cmd = NL80211_CMD_DEL_STATION, 5739 .doit = nl80211_del_station, 5740 .policy = nl80211_policy, 5741 .flags = GENL_ADMIN_PERM, 5742 .internal_flags = NL80211_FLAG_NEED_NETDEV | 5743 NL80211_FLAG_NEED_RTNL, 5744 }, 5745 { 5746 .cmd = NL80211_CMD_GET_MPATH, 5747 .doit = nl80211_get_mpath, 5748 .dumpit = nl80211_dump_mpath, 5749 .policy = nl80211_policy, 5750 .flags = GENL_ADMIN_PERM, 5751 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 5752 NL80211_FLAG_NEED_RTNL, 5753 }, 5754 { 5755 .cmd = NL80211_CMD_SET_MPATH, 5756 .doit = nl80211_set_mpath, 5757 .policy = nl80211_policy, 5758 .flags = GENL_ADMIN_PERM, 5759 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 5760 NL80211_FLAG_NEED_RTNL, 5761 }, 5762 { 5763 .cmd = NL80211_CMD_NEW_MPATH, 5764 .doit = nl80211_new_mpath, 5765 .policy = nl80211_policy, 5766 .flags = GENL_ADMIN_PERM, 5767 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 5768 NL80211_FLAG_NEED_RTNL, 5769 }, 5770 { 5771 .cmd = NL80211_CMD_DEL_MPATH, 5772 .doit = nl80211_del_mpath, 5773 .policy = nl80211_policy, 5774 .flags = GENL_ADMIN_PERM, 5775 .internal_flags = NL80211_FLAG_NEED_NETDEV | 5776 NL80211_FLAG_NEED_RTNL, 5777 }, 5778 { 5779 .cmd = NL80211_CMD_SET_BSS, 5780 .doit = nl80211_set_bss, 5781 .policy = nl80211_policy, 5782 .flags = GENL_ADMIN_PERM, 5783 .internal_flags = NL80211_FLAG_NEED_NETDEV | 5784 NL80211_FLAG_NEED_RTNL, 5785 }, 5786 { 5787 .cmd = NL80211_CMD_GET_REG, 5788 .doit = nl80211_get_reg, 5789 .policy = nl80211_policy, 5790 /* can be retrieved by unprivileged users */ 5791 }, 5792 { 5793 .cmd = NL80211_CMD_SET_REG, 5794 .doit = nl80211_set_reg, 5795 .policy = nl80211_policy, 5796 .flags = GENL_ADMIN_PERM, 5797 }, 5798 { 5799 .cmd = NL80211_CMD_REQ_SET_REG, 5800 .doit = nl80211_req_set_reg, 5801 .policy = nl80211_policy, 5802 .flags = GENL_ADMIN_PERM, 5803 }, 5804 { 5805 .cmd = NL80211_CMD_GET_MESH_CONFIG, 5806 .doit = nl80211_get_mesh_config, 5807 .policy = nl80211_policy, 5808 /* can be retrieved by unprivileged users */ 5809 .internal_flags = NL80211_FLAG_NEED_NETDEV | 5810 NL80211_FLAG_NEED_RTNL, 5811 }, 5812 { 5813 .cmd = NL80211_CMD_SET_MESH_CONFIG, 5814 .doit = nl80211_update_mesh_config, 5815 .policy = nl80211_policy, 5816 .flags = GENL_ADMIN_PERM, 5817 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 5818 NL80211_FLAG_NEED_RTNL, 5819 }, 5820 { 5821 .cmd = NL80211_CMD_TRIGGER_SCAN, 5822 .doit = nl80211_trigger_scan, 5823 .policy = nl80211_policy, 5824 .flags = GENL_ADMIN_PERM, 5825 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 5826 NL80211_FLAG_NEED_RTNL, 5827 }, 5828 { 5829 .cmd = NL80211_CMD_GET_SCAN, 5830 .policy = nl80211_policy, 5831 .dumpit = nl80211_dump_scan, 5832 }, 5833 { 5834 .cmd = NL80211_CMD_START_SCHED_SCAN, 5835 .doit = nl80211_start_sched_scan, 5836 .policy = nl80211_policy, 5837 .flags = GENL_ADMIN_PERM, 5838 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 5839 NL80211_FLAG_NEED_RTNL, 5840 }, 5841 { 5842 .cmd = NL80211_CMD_STOP_SCHED_SCAN, 5843 .doit = nl80211_stop_sched_scan, 5844 .policy = nl80211_policy, 5845 .flags = GENL_ADMIN_PERM, 5846 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 5847 NL80211_FLAG_NEED_RTNL, 5848 }, 5849 { 5850 .cmd = NL80211_CMD_AUTHENTICATE, 5851 .doit = nl80211_authenticate, 5852 .policy = nl80211_policy, 5853 .flags = GENL_ADMIN_PERM, 5854 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 5855 NL80211_FLAG_NEED_RTNL, 5856 }, 5857 { 5858 .cmd = NL80211_CMD_ASSOCIATE, 5859 .doit = nl80211_associate, 5860 .policy = nl80211_policy, 5861 .flags = GENL_ADMIN_PERM, 5862 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 5863 NL80211_FLAG_NEED_RTNL, 5864 }, 5865 { 5866 .cmd = NL80211_CMD_DEAUTHENTICATE, 5867 .doit = nl80211_deauthenticate, 5868 .policy = nl80211_policy, 5869 .flags = GENL_ADMIN_PERM, 5870 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 5871 NL80211_FLAG_NEED_RTNL, 5872 }, 5873 { 5874 .cmd = NL80211_CMD_DISASSOCIATE, 5875 .doit = nl80211_disassociate, 5876 .policy = nl80211_policy, 5877 .flags = GENL_ADMIN_PERM, 5878 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 5879 NL80211_FLAG_NEED_RTNL, 5880 }, 5881 { 5882 .cmd = NL80211_CMD_JOIN_IBSS, 5883 .doit = nl80211_join_ibss, 5884 .policy = nl80211_policy, 5885 .flags = GENL_ADMIN_PERM, 5886 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 5887 NL80211_FLAG_NEED_RTNL, 5888 }, 5889 { 5890 .cmd = NL80211_CMD_LEAVE_IBSS, 5891 .doit = nl80211_leave_ibss, 5892 .policy = nl80211_policy, 5893 .flags = GENL_ADMIN_PERM, 5894 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 5895 NL80211_FLAG_NEED_RTNL, 5896 }, 5897 #ifdef CONFIG_NL80211_TESTMODE 5898 { 5899 .cmd = NL80211_CMD_TESTMODE, 5900 .doit = nl80211_testmode_do, 5901 .dumpit = nl80211_testmode_dump, 5902 .policy = nl80211_policy, 5903 .flags = GENL_ADMIN_PERM, 5904 .internal_flags = NL80211_FLAG_NEED_WIPHY | 5905 NL80211_FLAG_NEED_RTNL, 5906 }, 5907 #endif 5908 { 5909 .cmd = NL80211_CMD_CONNECT, 5910 .doit = nl80211_connect, 5911 .policy = nl80211_policy, 5912 .flags = GENL_ADMIN_PERM, 5913 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 5914 NL80211_FLAG_NEED_RTNL, 5915 }, 5916 { 5917 .cmd = NL80211_CMD_DISCONNECT, 5918 .doit = nl80211_disconnect, 5919 .policy = nl80211_policy, 5920 .flags = GENL_ADMIN_PERM, 5921 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 5922 NL80211_FLAG_NEED_RTNL, 5923 }, 5924 { 5925 .cmd = NL80211_CMD_SET_WIPHY_NETNS, 5926 .doit = nl80211_wiphy_netns, 5927 .policy = nl80211_policy, 5928 .flags = GENL_ADMIN_PERM, 5929 .internal_flags = NL80211_FLAG_NEED_WIPHY | 5930 NL80211_FLAG_NEED_RTNL, 5931 }, 5932 { 5933 .cmd = NL80211_CMD_GET_SURVEY, 5934 .policy = nl80211_policy, 5935 .dumpit = nl80211_dump_survey, 5936 }, 5937 { 5938 .cmd = NL80211_CMD_SET_PMKSA, 5939 .doit = nl80211_setdel_pmksa, 5940 .policy = nl80211_policy, 5941 .flags = GENL_ADMIN_PERM, 5942 .internal_flags = NL80211_FLAG_NEED_NETDEV | 5943 NL80211_FLAG_NEED_RTNL, 5944 }, 5945 { 5946 .cmd = NL80211_CMD_DEL_PMKSA, 5947 .doit = nl80211_setdel_pmksa, 5948 .policy = nl80211_policy, 5949 .flags = GENL_ADMIN_PERM, 5950 .internal_flags = NL80211_FLAG_NEED_NETDEV | 5951 NL80211_FLAG_NEED_RTNL, 5952 }, 5953 { 5954 .cmd = NL80211_CMD_FLUSH_PMKSA, 5955 .doit = nl80211_flush_pmksa, 5956 .policy = nl80211_policy, 5957 .flags = GENL_ADMIN_PERM, 5958 .internal_flags = NL80211_FLAG_NEED_NETDEV | 5959 NL80211_FLAG_NEED_RTNL, 5960 }, 5961 { 5962 .cmd = NL80211_CMD_REMAIN_ON_CHANNEL, 5963 .doit = nl80211_remain_on_channel, 5964 .policy = nl80211_policy, 5965 .flags = GENL_ADMIN_PERM, 5966 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 5967 NL80211_FLAG_NEED_RTNL, 5968 }, 5969 { 5970 .cmd = NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL, 5971 .doit = nl80211_cancel_remain_on_channel, 5972 .policy = nl80211_policy, 5973 .flags = GENL_ADMIN_PERM, 5974 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 5975 NL80211_FLAG_NEED_RTNL, 5976 }, 5977 { 5978 .cmd = NL80211_CMD_SET_TX_BITRATE_MASK, 5979 .doit = nl80211_set_tx_bitrate_mask, 5980 .policy = nl80211_policy, 5981 .flags = GENL_ADMIN_PERM, 5982 .internal_flags = NL80211_FLAG_NEED_NETDEV | 5983 NL80211_FLAG_NEED_RTNL, 5984 }, 5985 { 5986 .cmd = NL80211_CMD_REGISTER_FRAME, 5987 .doit = nl80211_register_mgmt, 5988 .policy = nl80211_policy, 5989 .flags = GENL_ADMIN_PERM, 5990 .internal_flags = NL80211_FLAG_NEED_NETDEV | 5991 NL80211_FLAG_NEED_RTNL, 5992 }, 5993 { 5994 .cmd = NL80211_CMD_FRAME, 5995 .doit = nl80211_tx_mgmt, 5996 .policy = nl80211_policy, 5997 .flags = GENL_ADMIN_PERM, 5998 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 5999 NL80211_FLAG_NEED_RTNL, 6000 }, 6001 { 6002 .cmd = NL80211_CMD_FRAME_WAIT_CANCEL, 6003 .doit = nl80211_tx_mgmt_cancel_wait, 6004 .policy = nl80211_policy, 6005 .flags = GENL_ADMIN_PERM, 6006 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 6007 NL80211_FLAG_NEED_RTNL, 6008 }, 6009 { 6010 .cmd = NL80211_CMD_SET_POWER_SAVE, 6011 .doit = nl80211_set_power_save, 6012 .policy = nl80211_policy, 6013 .flags = GENL_ADMIN_PERM, 6014 .internal_flags = NL80211_FLAG_NEED_NETDEV | 6015 NL80211_FLAG_NEED_RTNL, 6016 }, 6017 { 6018 .cmd = NL80211_CMD_GET_POWER_SAVE, 6019 .doit = nl80211_get_power_save, 6020 .policy = nl80211_policy, 6021 /* can be retrieved by unprivileged users */ 6022 .internal_flags = NL80211_FLAG_NEED_NETDEV | 6023 NL80211_FLAG_NEED_RTNL, 6024 }, 6025 { 6026 .cmd = NL80211_CMD_SET_CQM, 6027 .doit = nl80211_set_cqm, 6028 .policy = nl80211_policy, 6029 .flags = GENL_ADMIN_PERM, 6030 .internal_flags = NL80211_FLAG_NEED_NETDEV | 6031 NL80211_FLAG_NEED_RTNL, 6032 }, 6033 { 6034 .cmd = NL80211_CMD_SET_CHANNEL, 6035 .doit = nl80211_set_channel, 6036 .policy = nl80211_policy, 6037 .flags = GENL_ADMIN_PERM, 6038 .internal_flags = NL80211_FLAG_NEED_NETDEV | 6039 NL80211_FLAG_NEED_RTNL, 6040 }, 6041 { 6042 .cmd = NL80211_CMD_SET_WDS_PEER, 6043 .doit = nl80211_set_wds_peer, 6044 .policy = nl80211_policy, 6045 .flags = GENL_ADMIN_PERM, 6046 .internal_flags = NL80211_FLAG_NEED_NETDEV | 6047 NL80211_FLAG_NEED_RTNL, 6048 }, 6049 { 6050 .cmd = NL80211_CMD_JOIN_MESH, 6051 .doit = nl80211_join_mesh, 6052 .policy = nl80211_policy, 6053 .flags = GENL_ADMIN_PERM, 6054 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 6055 NL80211_FLAG_NEED_RTNL, 6056 }, 6057 { 6058 .cmd = NL80211_CMD_LEAVE_MESH, 6059 .doit = nl80211_leave_mesh, 6060 .policy = nl80211_policy, 6061 .flags = GENL_ADMIN_PERM, 6062 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 6063 NL80211_FLAG_NEED_RTNL, 6064 }, 6065 { 6066 .cmd = NL80211_CMD_GET_WOWLAN, 6067 .doit = nl80211_get_wowlan, 6068 .policy = nl80211_policy, 6069 /* can be retrieved by unprivileged users */ 6070 .internal_flags = NL80211_FLAG_NEED_WIPHY | 6071 NL80211_FLAG_NEED_RTNL, 6072 }, 6073 { 6074 .cmd = NL80211_CMD_SET_WOWLAN, 6075 .doit = nl80211_set_wowlan, 6076 .policy = nl80211_policy, 6077 .flags = GENL_ADMIN_PERM, 6078 .internal_flags = NL80211_FLAG_NEED_WIPHY | 6079 NL80211_FLAG_NEED_RTNL, 6080 }, 6081 { 6082 .cmd = NL80211_CMD_SET_REKEY_OFFLOAD, 6083 .doit = nl80211_set_rekey_data, 6084 .policy = nl80211_policy, 6085 .flags = GENL_ADMIN_PERM, 6086 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 6087 NL80211_FLAG_NEED_RTNL, 6088 }, 6089 }; 6090 6091 static struct genl_multicast_group nl80211_mlme_mcgrp = { 6092 .name = "mlme", 6093 }; 6094 6095 /* multicast groups */ 6096 static struct genl_multicast_group nl80211_config_mcgrp = { 6097 .name = "config", 6098 }; 6099 static struct genl_multicast_group nl80211_scan_mcgrp = { 6100 .name = "scan", 6101 }; 6102 static struct genl_multicast_group nl80211_regulatory_mcgrp = { 6103 .name = "regulatory", 6104 }; 6105 6106 /* notification functions */ 6107 6108 void nl80211_notify_dev_rename(struct cfg80211_registered_device *rdev) 6109 { 6110 struct sk_buff *msg; 6111 6112 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 6113 if (!msg) 6114 return; 6115 6116 if (nl80211_send_wiphy(msg, 0, 0, 0, rdev) < 0) { 6117 nlmsg_free(msg); 6118 return; 6119 } 6120 6121 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0, 6122 nl80211_config_mcgrp.id, GFP_KERNEL); 6123 } 6124 6125 static int nl80211_add_scan_req(struct sk_buff *msg, 6126 struct cfg80211_registered_device *rdev) 6127 { 6128 struct cfg80211_scan_request *req = rdev->scan_req; 6129 struct nlattr *nest; 6130 int i; 6131 6132 ASSERT_RDEV_LOCK(rdev); 6133 6134 if (WARN_ON(!req)) 6135 return 0; 6136 6137 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_SSIDS); 6138 if (!nest) 6139 goto nla_put_failure; 6140 for (i = 0; i < req->n_ssids; i++) 6141 NLA_PUT(msg, i, req->ssids[i].ssid_len, req->ssids[i].ssid); 6142 nla_nest_end(msg, nest); 6143 6144 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES); 6145 if (!nest) 6146 goto nla_put_failure; 6147 for (i = 0; i < req->n_channels; i++) 6148 NLA_PUT_U32(msg, i, req->channels[i]->center_freq); 6149 nla_nest_end(msg, nest); 6150 6151 if (req->ie) 6152 NLA_PUT(msg, NL80211_ATTR_IE, req->ie_len, req->ie); 6153 6154 return 0; 6155 nla_put_failure: 6156 return -ENOBUFS; 6157 } 6158 6159 static int nl80211_send_scan_msg(struct sk_buff *msg, 6160 struct cfg80211_registered_device *rdev, 6161 struct net_device *netdev, 6162 u32 pid, u32 seq, int flags, 6163 u32 cmd) 6164 { 6165 void *hdr; 6166 6167 hdr = nl80211hdr_put(msg, pid, seq, flags, cmd); 6168 if (!hdr) 6169 return -1; 6170 6171 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx); 6172 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex); 6173 6174 /* ignore errors and send incomplete event anyway */ 6175 nl80211_add_scan_req(msg, rdev); 6176 6177 return genlmsg_end(msg, hdr); 6178 6179 nla_put_failure: 6180 genlmsg_cancel(msg, hdr); 6181 return -EMSGSIZE; 6182 } 6183 6184 static int 6185 nl80211_send_sched_scan_msg(struct sk_buff *msg, 6186 struct cfg80211_registered_device *rdev, 6187 struct net_device *netdev, 6188 u32 pid, u32 seq, int flags, u32 cmd) 6189 { 6190 void *hdr; 6191 6192 hdr = nl80211hdr_put(msg, pid, seq, flags, cmd); 6193 if (!hdr) 6194 return -1; 6195 6196 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx); 6197 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex); 6198 6199 return genlmsg_end(msg, hdr); 6200 6201 nla_put_failure: 6202 genlmsg_cancel(msg, hdr); 6203 return -EMSGSIZE; 6204 } 6205 6206 void nl80211_send_scan_start(struct cfg80211_registered_device *rdev, 6207 struct net_device *netdev) 6208 { 6209 struct sk_buff *msg; 6210 6211 msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL); 6212 if (!msg) 6213 return; 6214 6215 if (nl80211_send_scan_msg(msg, rdev, netdev, 0, 0, 0, 6216 NL80211_CMD_TRIGGER_SCAN) < 0) { 6217 nlmsg_free(msg); 6218 return; 6219 } 6220 6221 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0, 6222 nl80211_scan_mcgrp.id, GFP_KERNEL); 6223 } 6224 6225 void nl80211_send_scan_done(struct cfg80211_registered_device *rdev, 6226 struct net_device *netdev) 6227 { 6228 struct sk_buff *msg; 6229 6230 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 6231 if (!msg) 6232 return; 6233 6234 if (nl80211_send_scan_msg(msg, rdev, netdev, 0, 0, 0, 6235 NL80211_CMD_NEW_SCAN_RESULTS) < 0) { 6236 nlmsg_free(msg); 6237 return; 6238 } 6239 6240 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0, 6241 nl80211_scan_mcgrp.id, GFP_KERNEL); 6242 } 6243 6244 void nl80211_send_scan_aborted(struct cfg80211_registered_device *rdev, 6245 struct net_device *netdev) 6246 { 6247 struct sk_buff *msg; 6248 6249 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 6250 if (!msg) 6251 return; 6252 6253 if (nl80211_send_scan_msg(msg, rdev, netdev, 0, 0, 0, 6254 NL80211_CMD_SCAN_ABORTED) < 0) { 6255 nlmsg_free(msg); 6256 return; 6257 } 6258 6259 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0, 6260 nl80211_scan_mcgrp.id, GFP_KERNEL); 6261 } 6262 6263 void nl80211_send_sched_scan_results(struct cfg80211_registered_device *rdev, 6264 struct net_device *netdev) 6265 { 6266 struct sk_buff *msg; 6267 6268 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 6269 if (!msg) 6270 return; 6271 6272 if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0, 6273 NL80211_CMD_SCHED_SCAN_RESULTS) < 0) { 6274 nlmsg_free(msg); 6275 return; 6276 } 6277 6278 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0, 6279 nl80211_scan_mcgrp.id, GFP_KERNEL); 6280 } 6281 6282 void nl80211_send_sched_scan(struct cfg80211_registered_device *rdev, 6283 struct net_device *netdev, u32 cmd) 6284 { 6285 struct sk_buff *msg; 6286 6287 msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL); 6288 if (!msg) 6289 return; 6290 6291 if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0, cmd) < 0) { 6292 nlmsg_free(msg); 6293 return; 6294 } 6295 6296 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0, 6297 nl80211_scan_mcgrp.id, GFP_KERNEL); 6298 } 6299 6300 /* 6301 * This can happen on global regulatory changes or device specific settings 6302 * based on custom world regulatory domains. 6303 */ 6304 void nl80211_send_reg_change_event(struct regulatory_request *request) 6305 { 6306 struct sk_buff *msg; 6307 void *hdr; 6308 6309 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 6310 if (!msg) 6311 return; 6312 6313 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_CHANGE); 6314 if (!hdr) { 6315 nlmsg_free(msg); 6316 return; 6317 } 6318 6319 /* Userspace can always count this one always being set */ 6320 NLA_PUT_U8(msg, NL80211_ATTR_REG_INITIATOR, request->initiator); 6321 6322 if (request->alpha2[0] == '0' && request->alpha2[1] == '0') 6323 NLA_PUT_U8(msg, NL80211_ATTR_REG_TYPE, 6324 NL80211_REGDOM_TYPE_WORLD); 6325 else if (request->alpha2[0] == '9' && request->alpha2[1] == '9') 6326 NLA_PUT_U8(msg, NL80211_ATTR_REG_TYPE, 6327 NL80211_REGDOM_TYPE_CUSTOM_WORLD); 6328 else if ((request->alpha2[0] == '9' && request->alpha2[1] == '8') || 6329 request->intersect) 6330 NLA_PUT_U8(msg, NL80211_ATTR_REG_TYPE, 6331 NL80211_REGDOM_TYPE_INTERSECTION); 6332 else { 6333 NLA_PUT_U8(msg, NL80211_ATTR_REG_TYPE, 6334 NL80211_REGDOM_TYPE_COUNTRY); 6335 NLA_PUT_STRING(msg, NL80211_ATTR_REG_ALPHA2, request->alpha2); 6336 } 6337 6338 if (wiphy_idx_valid(request->wiphy_idx)) 6339 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, request->wiphy_idx); 6340 6341 if (genlmsg_end(msg, hdr) < 0) { 6342 nlmsg_free(msg); 6343 return; 6344 } 6345 6346 rcu_read_lock(); 6347 genlmsg_multicast_allns(msg, 0, nl80211_regulatory_mcgrp.id, 6348 GFP_ATOMIC); 6349 rcu_read_unlock(); 6350 6351 return; 6352 6353 nla_put_failure: 6354 genlmsg_cancel(msg, hdr); 6355 nlmsg_free(msg); 6356 } 6357 6358 static void nl80211_send_mlme_event(struct cfg80211_registered_device *rdev, 6359 struct net_device *netdev, 6360 const u8 *buf, size_t len, 6361 enum nl80211_commands cmd, gfp_t gfp) 6362 { 6363 struct sk_buff *msg; 6364 void *hdr; 6365 6366 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 6367 if (!msg) 6368 return; 6369 6370 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd); 6371 if (!hdr) { 6372 nlmsg_free(msg); 6373 return; 6374 } 6375 6376 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx); 6377 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex); 6378 NLA_PUT(msg, NL80211_ATTR_FRAME, len, buf); 6379 6380 if (genlmsg_end(msg, hdr) < 0) { 6381 nlmsg_free(msg); 6382 return; 6383 } 6384 6385 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0, 6386 nl80211_mlme_mcgrp.id, gfp); 6387 return; 6388 6389 nla_put_failure: 6390 genlmsg_cancel(msg, hdr); 6391 nlmsg_free(msg); 6392 } 6393 6394 void nl80211_send_rx_auth(struct cfg80211_registered_device *rdev, 6395 struct net_device *netdev, const u8 *buf, 6396 size_t len, gfp_t gfp) 6397 { 6398 nl80211_send_mlme_event(rdev, netdev, buf, len, 6399 NL80211_CMD_AUTHENTICATE, gfp); 6400 } 6401 6402 void nl80211_send_rx_assoc(struct cfg80211_registered_device *rdev, 6403 struct net_device *netdev, const u8 *buf, 6404 size_t len, gfp_t gfp) 6405 { 6406 nl80211_send_mlme_event(rdev, netdev, buf, len, 6407 NL80211_CMD_ASSOCIATE, gfp); 6408 } 6409 6410 void nl80211_send_deauth(struct cfg80211_registered_device *rdev, 6411 struct net_device *netdev, const u8 *buf, 6412 size_t len, gfp_t gfp) 6413 { 6414 nl80211_send_mlme_event(rdev, netdev, buf, len, 6415 NL80211_CMD_DEAUTHENTICATE, gfp); 6416 } 6417 6418 void nl80211_send_disassoc(struct cfg80211_registered_device *rdev, 6419 struct net_device *netdev, const u8 *buf, 6420 size_t len, gfp_t gfp) 6421 { 6422 nl80211_send_mlme_event(rdev, netdev, buf, len, 6423 NL80211_CMD_DISASSOCIATE, gfp); 6424 } 6425 6426 void nl80211_send_unprot_deauth(struct cfg80211_registered_device *rdev, 6427 struct net_device *netdev, const u8 *buf, 6428 size_t len, gfp_t gfp) 6429 { 6430 nl80211_send_mlme_event(rdev, netdev, buf, len, 6431 NL80211_CMD_UNPROT_DEAUTHENTICATE, gfp); 6432 } 6433 6434 void nl80211_send_unprot_disassoc(struct cfg80211_registered_device *rdev, 6435 struct net_device *netdev, const u8 *buf, 6436 size_t len, gfp_t gfp) 6437 { 6438 nl80211_send_mlme_event(rdev, netdev, buf, len, 6439 NL80211_CMD_UNPROT_DISASSOCIATE, gfp); 6440 } 6441 6442 static void nl80211_send_mlme_timeout(struct cfg80211_registered_device *rdev, 6443 struct net_device *netdev, int cmd, 6444 const u8 *addr, gfp_t gfp) 6445 { 6446 struct sk_buff *msg; 6447 void *hdr; 6448 6449 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 6450 if (!msg) 6451 return; 6452 6453 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd); 6454 if (!hdr) { 6455 nlmsg_free(msg); 6456 return; 6457 } 6458 6459 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx); 6460 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex); 6461 NLA_PUT_FLAG(msg, NL80211_ATTR_TIMED_OUT); 6462 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr); 6463 6464 if (genlmsg_end(msg, hdr) < 0) { 6465 nlmsg_free(msg); 6466 return; 6467 } 6468 6469 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0, 6470 nl80211_mlme_mcgrp.id, gfp); 6471 return; 6472 6473 nla_put_failure: 6474 genlmsg_cancel(msg, hdr); 6475 nlmsg_free(msg); 6476 } 6477 6478 void nl80211_send_auth_timeout(struct cfg80211_registered_device *rdev, 6479 struct net_device *netdev, const u8 *addr, 6480 gfp_t gfp) 6481 { 6482 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_AUTHENTICATE, 6483 addr, gfp); 6484 } 6485 6486 void nl80211_send_assoc_timeout(struct cfg80211_registered_device *rdev, 6487 struct net_device *netdev, const u8 *addr, 6488 gfp_t gfp) 6489 { 6490 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_ASSOCIATE, 6491 addr, gfp); 6492 } 6493 6494 void nl80211_send_connect_result(struct cfg80211_registered_device *rdev, 6495 struct net_device *netdev, const u8 *bssid, 6496 const u8 *req_ie, size_t req_ie_len, 6497 const u8 *resp_ie, size_t resp_ie_len, 6498 u16 status, gfp_t gfp) 6499 { 6500 struct sk_buff *msg; 6501 void *hdr; 6502 6503 msg = nlmsg_new(NLMSG_GOODSIZE, gfp); 6504 if (!msg) 6505 return; 6506 6507 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONNECT); 6508 if (!hdr) { 6509 nlmsg_free(msg); 6510 return; 6511 } 6512 6513 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx); 6514 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex); 6515 if (bssid) 6516 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid); 6517 NLA_PUT_U16(msg, NL80211_ATTR_STATUS_CODE, status); 6518 if (req_ie) 6519 NLA_PUT(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie); 6520 if (resp_ie) 6521 NLA_PUT(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie); 6522 6523 if (genlmsg_end(msg, hdr) < 0) { 6524 nlmsg_free(msg); 6525 return; 6526 } 6527 6528 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0, 6529 nl80211_mlme_mcgrp.id, gfp); 6530 return; 6531 6532 nla_put_failure: 6533 genlmsg_cancel(msg, hdr); 6534 nlmsg_free(msg); 6535 6536 } 6537 6538 void nl80211_send_roamed(struct cfg80211_registered_device *rdev, 6539 struct net_device *netdev, const u8 *bssid, 6540 const u8 *req_ie, size_t req_ie_len, 6541 const u8 *resp_ie, size_t resp_ie_len, gfp_t gfp) 6542 { 6543 struct sk_buff *msg; 6544 void *hdr; 6545 6546 msg = nlmsg_new(NLMSG_GOODSIZE, gfp); 6547 if (!msg) 6548 return; 6549 6550 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ROAM); 6551 if (!hdr) { 6552 nlmsg_free(msg); 6553 return; 6554 } 6555 6556 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx); 6557 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex); 6558 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid); 6559 if (req_ie) 6560 NLA_PUT(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie); 6561 if (resp_ie) 6562 NLA_PUT(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie); 6563 6564 if (genlmsg_end(msg, hdr) < 0) { 6565 nlmsg_free(msg); 6566 return; 6567 } 6568 6569 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0, 6570 nl80211_mlme_mcgrp.id, gfp); 6571 return; 6572 6573 nla_put_failure: 6574 genlmsg_cancel(msg, hdr); 6575 nlmsg_free(msg); 6576 6577 } 6578 6579 void nl80211_send_disconnected(struct cfg80211_registered_device *rdev, 6580 struct net_device *netdev, u16 reason, 6581 const u8 *ie, size_t ie_len, bool from_ap) 6582 { 6583 struct sk_buff *msg; 6584 void *hdr; 6585 6586 msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL); 6587 if (!msg) 6588 return; 6589 6590 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DISCONNECT); 6591 if (!hdr) { 6592 nlmsg_free(msg); 6593 return; 6594 } 6595 6596 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx); 6597 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex); 6598 if (from_ap && reason) 6599 NLA_PUT_U16(msg, NL80211_ATTR_REASON_CODE, reason); 6600 if (from_ap) 6601 NLA_PUT_FLAG(msg, NL80211_ATTR_DISCONNECTED_BY_AP); 6602 if (ie) 6603 NLA_PUT(msg, NL80211_ATTR_IE, ie_len, ie); 6604 6605 if (genlmsg_end(msg, hdr) < 0) { 6606 nlmsg_free(msg); 6607 return; 6608 } 6609 6610 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0, 6611 nl80211_mlme_mcgrp.id, GFP_KERNEL); 6612 return; 6613 6614 nla_put_failure: 6615 genlmsg_cancel(msg, hdr); 6616 nlmsg_free(msg); 6617 6618 } 6619 6620 void nl80211_send_ibss_bssid(struct cfg80211_registered_device *rdev, 6621 struct net_device *netdev, const u8 *bssid, 6622 gfp_t gfp) 6623 { 6624 struct sk_buff *msg; 6625 void *hdr; 6626 6627 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 6628 if (!msg) 6629 return; 6630 6631 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_JOIN_IBSS); 6632 if (!hdr) { 6633 nlmsg_free(msg); 6634 return; 6635 } 6636 6637 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx); 6638 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex); 6639 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid); 6640 6641 if (genlmsg_end(msg, hdr) < 0) { 6642 nlmsg_free(msg); 6643 return; 6644 } 6645 6646 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0, 6647 nl80211_mlme_mcgrp.id, gfp); 6648 return; 6649 6650 nla_put_failure: 6651 genlmsg_cancel(msg, hdr); 6652 nlmsg_free(msg); 6653 } 6654 6655 void nl80211_send_new_peer_candidate(struct cfg80211_registered_device *rdev, 6656 struct net_device *netdev, 6657 const u8 *macaddr, const u8* ie, u8 ie_len, 6658 gfp_t gfp) 6659 { 6660 struct sk_buff *msg; 6661 void *hdr; 6662 6663 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 6664 if (!msg) 6665 return; 6666 6667 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NEW_PEER_CANDIDATE); 6668 if (!hdr) { 6669 nlmsg_free(msg); 6670 return; 6671 } 6672 6673 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx); 6674 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex); 6675 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, macaddr); 6676 if (ie_len && ie) 6677 NLA_PUT(msg, NL80211_ATTR_IE, ie_len , ie); 6678 6679 if (genlmsg_end(msg, hdr) < 0) { 6680 nlmsg_free(msg); 6681 return; 6682 } 6683 6684 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0, 6685 nl80211_mlme_mcgrp.id, gfp); 6686 return; 6687 6688 nla_put_failure: 6689 genlmsg_cancel(msg, hdr); 6690 nlmsg_free(msg); 6691 } 6692 6693 void nl80211_michael_mic_failure(struct cfg80211_registered_device *rdev, 6694 struct net_device *netdev, const u8 *addr, 6695 enum nl80211_key_type key_type, int key_id, 6696 const u8 *tsc, gfp_t gfp) 6697 { 6698 struct sk_buff *msg; 6699 void *hdr; 6700 6701 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 6702 if (!msg) 6703 return; 6704 6705 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_MICHAEL_MIC_FAILURE); 6706 if (!hdr) { 6707 nlmsg_free(msg); 6708 return; 6709 } 6710 6711 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx); 6712 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex); 6713 if (addr) 6714 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr); 6715 NLA_PUT_U32(msg, NL80211_ATTR_KEY_TYPE, key_type); 6716 if (key_id != -1) 6717 NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, key_id); 6718 if (tsc) 6719 NLA_PUT(msg, NL80211_ATTR_KEY_SEQ, 6, tsc); 6720 6721 if (genlmsg_end(msg, hdr) < 0) { 6722 nlmsg_free(msg); 6723 return; 6724 } 6725 6726 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0, 6727 nl80211_mlme_mcgrp.id, gfp); 6728 return; 6729 6730 nla_put_failure: 6731 genlmsg_cancel(msg, hdr); 6732 nlmsg_free(msg); 6733 } 6734 6735 void nl80211_send_beacon_hint_event(struct wiphy *wiphy, 6736 struct ieee80211_channel *channel_before, 6737 struct ieee80211_channel *channel_after) 6738 { 6739 struct sk_buff *msg; 6740 void *hdr; 6741 struct nlattr *nl_freq; 6742 6743 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC); 6744 if (!msg) 6745 return; 6746 6747 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_BEACON_HINT); 6748 if (!hdr) { 6749 nlmsg_free(msg); 6750 return; 6751 } 6752 6753 /* 6754 * Since we are applying the beacon hint to a wiphy we know its 6755 * wiphy_idx is valid 6756 */ 6757 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)); 6758 6759 /* Before */ 6760 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_BEFORE); 6761 if (!nl_freq) 6762 goto nla_put_failure; 6763 if (nl80211_msg_put_channel(msg, channel_before)) 6764 goto nla_put_failure; 6765 nla_nest_end(msg, nl_freq); 6766 6767 /* After */ 6768 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_AFTER); 6769 if (!nl_freq) 6770 goto nla_put_failure; 6771 if (nl80211_msg_put_channel(msg, channel_after)) 6772 goto nla_put_failure; 6773 nla_nest_end(msg, nl_freq); 6774 6775 if (genlmsg_end(msg, hdr) < 0) { 6776 nlmsg_free(msg); 6777 return; 6778 } 6779 6780 rcu_read_lock(); 6781 genlmsg_multicast_allns(msg, 0, nl80211_regulatory_mcgrp.id, 6782 GFP_ATOMIC); 6783 rcu_read_unlock(); 6784 6785 return; 6786 6787 nla_put_failure: 6788 genlmsg_cancel(msg, hdr); 6789 nlmsg_free(msg); 6790 } 6791 6792 static void nl80211_send_remain_on_chan_event( 6793 int cmd, struct cfg80211_registered_device *rdev, 6794 struct net_device *netdev, u64 cookie, 6795 struct ieee80211_channel *chan, 6796 enum nl80211_channel_type channel_type, 6797 unsigned int duration, gfp_t gfp) 6798 { 6799 struct sk_buff *msg; 6800 void *hdr; 6801 6802 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 6803 if (!msg) 6804 return; 6805 6806 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd); 6807 if (!hdr) { 6808 nlmsg_free(msg); 6809 return; 6810 } 6811 6812 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx); 6813 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex); 6814 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, chan->center_freq); 6815 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE, channel_type); 6816 NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, cookie); 6817 6818 if (cmd == NL80211_CMD_REMAIN_ON_CHANNEL) 6819 NLA_PUT_U32(msg, NL80211_ATTR_DURATION, duration); 6820 6821 if (genlmsg_end(msg, hdr) < 0) { 6822 nlmsg_free(msg); 6823 return; 6824 } 6825 6826 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0, 6827 nl80211_mlme_mcgrp.id, gfp); 6828 return; 6829 6830 nla_put_failure: 6831 genlmsg_cancel(msg, hdr); 6832 nlmsg_free(msg); 6833 } 6834 6835 void nl80211_send_remain_on_channel(struct cfg80211_registered_device *rdev, 6836 struct net_device *netdev, u64 cookie, 6837 struct ieee80211_channel *chan, 6838 enum nl80211_channel_type channel_type, 6839 unsigned int duration, gfp_t gfp) 6840 { 6841 nl80211_send_remain_on_chan_event(NL80211_CMD_REMAIN_ON_CHANNEL, 6842 rdev, netdev, cookie, chan, 6843 channel_type, duration, gfp); 6844 } 6845 6846 void nl80211_send_remain_on_channel_cancel( 6847 struct cfg80211_registered_device *rdev, struct net_device *netdev, 6848 u64 cookie, struct ieee80211_channel *chan, 6849 enum nl80211_channel_type channel_type, gfp_t gfp) 6850 { 6851 nl80211_send_remain_on_chan_event(NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL, 6852 rdev, netdev, cookie, chan, 6853 channel_type, 0, gfp); 6854 } 6855 6856 void nl80211_send_sta_event(struct cfg80211_registered_device *rdev, 6857 struct net_device *dev, const u8 *mac_addr, 6858 struct station_info *sinfo, gfp_t gfp) 6859 { 6860 struct sk_buff *msg; 6861 6862 msg = nlmsg_new(NLMSG_GOODSIZE, gfp); 6863 if (!msg) 6864 return; 6865 6866 if (nl80211_send_station(msg, 0, 0, 0, dev, mac_addr, sinfo) < 0) { 6867 nlmsg_free(msg); 6868 return; 6869 } 6870 6871 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0, 6872 nl80211_mlme_mcgrp.id, gfp); 6873 } 6874 6875 void nl80211_send_sta_del_event(struct cfg80211_registered_device *rdev, 6876 struct net_device *dev, const u8 *mac_addr, 6877 gfp_t gfp) 6878 { 6879 struct sk_buff *msg; 6880 void *hdr; 6881 6882 msg = nlmsg_new(NLMSG_GOODSIZE, gfp); 6883 if (!msg) 6884 return; 6885 6886 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DEL_STATION); 6887 if (!hdr) { 6888 nlmsg_free(msg); 6889 return; 6890 } 6891 6892 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex); 6893 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr); 6894 6895 if (genlmsg_end(msg, hdr) < 0) { 6896 nlmsg_free(msg); 6897 return; 6898 } 6899 6900 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0, 6901 nl80211_mlme_mcgrp.id, gfp); 6902 return; 6903 6904 nla_put_failure: 6905 genlmsg_cancel(msg, hdr); 6906 nlmsg_free(msg); 6907 } 6908 6909 int nl80211_send_mgmt(struct cfg80211_registered_device *rdev, 6910 struct net_device *netdev, u32 nlpid, 6911 int freq, const u8 *buf, size_t len, gfp_t gfp) 6912 { 6913 struct sk_buff *msg; 6914 void *hdr; 6915 int err; 6916 6917 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 6918 if (!msg) 6919 return -ENOMEM; 6920 6921 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME); 6922 if (!hdr) { 6923 nlmsg_free(msg); 6924 return -ENOMEM; 6925 } 6926 6927 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx); 6928 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex); 6929 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq); 6930 NLA_PUT(msg, NL80211_ATTR_FRAME, len, buf); 6931 6932 err = genlmsg_end(msg, hdr); 6933 if (err < 0) { 6934 nlmsg_free(msg); 6935 return err; 6936 } 6937 6938 err = genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlpid); 6939 if (err < 0) 6940 return err; 6941 return 0; 6942 6943 nla_put_failure: 6944 genlmsg_cancel(msg, hdr); 6945 nlmsg_free(msg); 6946 return -ENOBUFS; 6947 } 6948 6949 void nl80211_send_mgmt_tx_status(struct cfg80211_registered_device *rdev, 6950 struct net_device *netdev, u64 cookie, 6951 const u8 *buf, size_t len, bool ack, 6952 gfp_t gfp) 6953 { 6954 struct sk_buff *msg; 6955 void *hdr; 6956 6957 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 6958 if (!msg) 6959 return; 6960 6961 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME_TX_STATUS); 6962 if (!hdr) { 6963 nlmsg_free(msg); 6964 return; 6965 } 6966 6967 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx); 6968 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex); 6969 NLA_PUT(msg, NL80211_ATTR_FRAME, len, buf); 6970 NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, cookie); 6971 if (ack) 6972 NLA_PUT_FLAG(msg, NL80211_ATTR_ACK); 6973 6974 if (genlmsg_end(msg, hdr) < 0) { 6975 nlmsg_free(msg); 6976 return; 6977 } 6978 6979 genlmsg_multicast(msg, 0, nl80211_mlme_mcgrp.id, gfp); 6980 return; 6981 6982 nla_put_failure: 6983 genlmsg_cancel(msg, hdr); 6984 nlmsg_free(msg); 6985 } 6986 6987 void 6988 nl80211_send_cqm_rssi_notify(struct cfg80211_registered_device *rdev, 6989 struct net_device *netdev, 6990 enum nl80211_cqm_rssi_threshold_event rssi_event, 6991 gfp_t gfp) 6992 { 6993 struct sk_buff *msg; 6994 struct nlattr *pinfoattr; 6995 void *hdr; 6996 6997 msg = nlmsg_new(NLMSG_GOODSIZE, gfp); 6998 if (!msg) 6999 return; 7000 7001 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM); 7002 if (!hdr) { 7003 nlmsg_free(msg); 7004 return; 7005 } 7006 7007 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx); 7008 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex); 7009 7010 pinfoattr = nla_nest_start(msg, NL80211_ATTR_CQM); 7011 if (!pinfoattr) 7012 goto nla_put_failure; 7013 7014 NLA_PUT_U32(msg, NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT, 7015 rssi_event); 7016 7017 nla_nest_end(msg, pinfoattr); 7018 7019 if (genlmsg_end(msg, hdr) < 0) { 7020 nlmsg_free(msg); 7021 return; 7022 } 7023 7024 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0, 7025 nl80211_mlme_mcgrp.id, gfp); 7026 return; 7027 7028 nla_put_failure: 7029 genlmsg_cancel(msg, hdr); 7030 nlmsg_free(msg); 7031 } 7032 7033 void nl80211_gtk_rekey_notify(struct cfg80211_registered_device *rdev, 7034 struct net_device *netdev, const u8 *bssid, 7035 const u8 *replay_ctr, gfp_t gfp) 7036 { 7037 struct sk_buff *msg; 7038 struct nlattr *rekey_attr; 7039 void *hdr; 7040 7041 msg = nlmsg_new(NLMSG_GOODSIZE, gfp); 7042 if (!msg) 7043 return; 7044 7045 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_REKEY_OFFLOAD); 7046 if (!hdr) { 7047 nlmsg_free(msg); 7048 return; 7049 } 7050 7051 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx); 7052 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex); 7053 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid); 7054 7055 rekey_attr = nla_nest_start(msg, NL80211_ATTR_REKEY_DATA); 7056 if (!rekey_attr) 7057 goto nla_put_failure; 7058 7059 NLA_PUT(msg, NL80211_REKEY_DATA_REPLAY_CTR, 7060 NL80211_REPLAY_CTR_LEN, replay_ctr); 7061 7062 nla_nest_end(msg, rekey_attr); 7063 7064 if (genlmsg_end(msg, hdr) < 0) { 7065 nlmsg_free(msg); 7066 return; 7067 } 7068 7069 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0, 7070 nl80211_mlme_mcgrp.id, gfp); 7071 return; 7072 7073 nla_put_failure: 7074 genlmsg_cancel(msg, hdr); 7075 nlmsg_free(msg); 7076 } 7077 7078 void 7079 nl80211_send_cqm_pktloss_notify(struct cfg80211_registered_device *rdev, 7080 struct net_device *netdev, const u8 *peer, 7081 u32 num_packets, gfp_t gfp) 7082 { 7083 struct sk_buff *msg; 7084 struct nlattr *pinfoattr; 7085 void *hdr; 7086 7087 msg = nlmsg_new(NLMSG_GOODSIZE, gfp); 7088 if (!msg) 7089 return; 7090 7091 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM); 7092 if (!hdr) { 7093 nlmsg_free(msg); 7094 return; 7095 } 7096 7097 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx); 7098 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex); 7099 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, peer); 7100 7101 pinfoattr = nla_nest_start(msg, NL80211_ATTR_CQM); 7102 if (!pinfoattr) 7103 goto nla_put_failure; 7104 7105 NLA_PUT_U32(msg, NL80211_ATTR_CQM_PKT_LOSS_EVENT, num_packets); 7106 7107 nla_nest_end(msg, pinfoattr); 7108 7109 if (genlmsg_end(msg, hdr) < 0) { 7110 nlmsg_free(msg); 7111 return; 7112 } 7113 7114 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0, 7115 nl80211_mlme_mcgrp.id, gfp); 7116 return; 7117 7118 nla_put_failure: 7119 genlmsg_cancel(msg, hdr); 7120 nlmsg_free(msg); 7121 } 7122 7123 static int nl80211_netlink_notify(struct notifier_block * nb, 7124 unsigned long state, 7125 void *_notify) 7126 { 7127 struct netlink_notify *notify = _notify; 7128 struct cfg80211_registered_device *rdev; 7129 struct wireless_dev *wdev; 7130 7131 if (state != NETLINK_URELEASE) 7132 return NOTIFY_DONE; 7133 7134 rcu_read_lock(); 7135 7136 list_for_each_entry_rcu(rdev, &cfg80211_rdev_list, list) 7137 list_for_each_entry_rcu(wdev, &rdev->netdev_list, list) 7138 cfg80211_mlme_unregister_socket(wdev, notify->pid); 7139 7140 rcu_read_unlock(); 7141 7142 return NOTIFY_DONE; 7143 } 7144 7145 static struct notifier_block nl80211_netlink_notifier = { 7146 .notifier_call = nl80211_netlink_notify, 7147 }; 7148 7149 /* initialisation/exit functions */ 7150 7151 int nl80211_init(void) 7152 { 7153 int err; 7154 7155 err = genl_register_family_with_ops(&nl80211_fam, 7156 nl80211_ops, ARRAY_SIZE(nl80211_ops)); 7157 if (err) 7158 return err; 7159 7160 err = genl_register_mc_group(&nl80211_fam, &nl80211_config_mcgrp); 7161 if (err) 7162 goto err_out; 7163 7164 err = genl_register_mc_group(&nl80211_fam, &nl80211_scan_mcgrp); 7165 if (err) 7166 goto err_out; 7167 7168 err = genl_register_mc_group(&nl80211_fam, &nl80211_regulatory_mcgrp); 7169 if (err) 7170 goto err_out; 7171 7172 err = genl_register_mc_group(&nl80211_fam, &nl80211_mlme_mcgrp); 7173 if (err) 7174 goto err_out; 7175 7176 #ifdef CONFIG_NL80211_TESTMODE 7177 err = genl_register_mc_group(&nl80211_fam, &nl80211_testmode_mcgrp); 7178 if (err) 7179 goto err_out; 7180 #endif 7181 7182 err = netlink_register_notifier(&nl80211_netlink_notifier); 7183 if (err) 7184 goto err_out; 7185 7186 return 0; 7187 err_out: 7188 genl_unregister_family(&nl80211_fam); 7189 return err; 7190 } 7191 7192 void nl80211_exit(void) 7193 { 7194 netlink_unregister_notifier(&nl80211_netlink_notifier); 7195 genl_unregister_family(&nl80211_fam); 7196 } 7197