1 /* 2 * mac80211 configuration hooks for cfg80211 3 * 4 * Copyright 2006-2010 Johannes Berg <johannes@sipsolutions.net> 5 * 6 * This file is GPLv2 as found in COPYING. 7 */ 8 9 #include <linux/ieee80211.h> 10 #include <linux/nl80211.h> 11 #include <linux/rtnetlink.h> 12 #include <linux/slab.h> 13 #include <net/net_namespace.h> 14 #include <linux/rcupdate.h> 15 #include <linux/if_ether.h> 16 #include <net/cfg80211.h> 17 #include "ieee80211_i.h" 18 #include "driver-ops.h" 19 #include "cfg.h" 20 #include "rate.h" 21 #include "mesh.h" 22 23 static struct wireless_dev *ieee80211_add_iface(struct wiphy *wiphy, 24 const char *name, 25 enum nl80211_iftype type, 26 u32 *flags, 27 struct vif_params *params) 28 { 29 struct ieee80211_local *local = wiphy_priv(wiphy); 30 struct wireless_dev *wdev; 31 struct ieee80211_sub_if_data *sdata; 32 int err; 33 34 err = ieee80211_if_add(local, name, &wdev, type, params); 35 if (err) 36 return ERR_PTR(err); 37 38 if (type == NL80211_IFTYPE_MONITOR && flags) { 39 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 40 sdata->u.mntr_flags = *flags; 41 } 42 43 return wdev; 44 } 45 46 static int ieee80211_del_iface(struct wiphy *wiphy, struct wireless_dev *wdev) 47 { 48 ieee80211_if_remove(IEEE80211_WDEV_TO_SUB_IF(wdev)); 49 50 return 0; 51 } 52 53 static int ieee80211_change_iface(struct wiphy *wiphy, 54 struct net_device *dev, 55 enum nl80211_iftype type, u32 *flags, 56 struct vif_params *params) 57 { 58 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 59 int ret; 60 61 ret = ieee80211_if_change_type(sdata, type); 62 if (ret) 63 return ret; 64 65 if (type == NL80211_IFTYPE_AP_VLAN && 66 params && params->use_4addr == 0) 67 RCU_INIT_POINTER(sdata->u.vlan.sta, NULL); 68 else if (type == NL80211_IFTYPE_STATION && 69 params && params->use_4addr >= 0) 70 sdata->u.mgd.use_4addr = params->use_4addr; 71 72 if (sdata->vif.type == NL80211_IFTYPE_MONITOR && flags) { 73 struct ieee80211_local *local = sdata->local; 74 75 if (ieee80211_sdata_running(sdata)) { 76 u32 mask = MONITOR_FLAG_COOK_FRAMES | 77 MONITOR_FLAG_ACTIVE; 78 79 /* 80 * Prohibit MONITOR_FLAG_COOK_FRAMES and 81 * MONITOR_FLAG_ACTIVE to be changed while the 82 * interface is up. 83 * Else we would need to add a lot of cruft 84 * to update everything: 85 * cooked_mntrs, monitor and all fif_* counters 86 * reconfigure hardware 87 */ 88 if ((*flags & mask) != (sdata->u.mntr_flags & mask)) 89 return -EBUSY; 90 91 ieee80211_adjust_monitor_flags(sdata, -1); 92 sdata->u.mntr_flags = *flags; 93 ieee80211_adjust_monitor_flags(sdata, 1); 94 95 ieee80211_configure_filter(local); 96 } else { 97 /* 98 * Because the interface is down, ieee80211_do_stop 99 * and ieee80211_do_open take care of "everything" 100 * mentioned in the comment above. 101 */ 102 sdata->u.mntr_flags = *flags; 103 } 104 } 105 106 return 0; 107 } 108 109 static int ieee80211_start_p2p_device(struct wiphy *wiphy, 110 struct wireless_dev *wdev) 111 { 112 return ieee80211_do_open(wdev, true); 113 } 114 115 static void ieee80211_stop_p2p_device(struct wiphy *wiphy, 116 struct wireless_dev *wdev) 117 { 118 ieee80211_sdata_stop(IEEE80211_WDEV_TO_SUB_IF(wdev)); 119 } 120 121 static int ieee80211_set_noack_map(struct wiphy *wiphy, 122 struct net_device *dev, 123 u16 noack_map) 124 { 125 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 126 127 sdata->noack_map = noack_map; 128 return 0; 129 } 130 131 static int ieee80211_add_key(struct wiphy *wiphy, struct net_device *dev, 132 u8 key_idx, bool pairwise, const u8 *mac_addr, 133 struct key_params *params) 134 { 135 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 136 struct sta_info *sta = NULL; 137 struct ieee80211_key *key; 138 int err; 139 140 if (!ieee80211_sdata_running(sdata)) 141 return -ENETDOWN; 142 143 /* reject WEP and TKIP keys if WEP failed to initialize */ 144 switch (params->cipher) { 145 case WLAN_CIPHER_SUITE_WEP40: 146 case WLAN_CIPHER_SUITE_TKIP: 147 case WLAN_CIPHER_SUITE_WEP104: 148 if (IS_ERR(sdata->local->wep_tx_tfm)) 149 return -EINVAL; 150 break; 151 default: 152 break; 153 } 154 155 key = ieee80211_key_alloc(params->cipher, key_idx, params->key_len, 156 params->key, params->seq_len, params->seq); 157 if (IS_ERR(key)) 158 return PTR_ERR(key); 159 160 if (pairwise) 161 key->conf.flags |= IEEE80211_KEY_FLAG_PAIRWISE; 162 163 mutex_lock(&sdata->local->sta_mtx); 164 165 if (mac_addr) { 166 if (ieee80211_vif_is_mesh(&sdata->vif)) 167 sta = sta_info_get(sdata, mac_addr); 168 else 169 sta = sta_info_get_bss(sdata, mac_addr); 170 /* 171 * The ASSOC test makes sure the driver is ready to 172 * receive the key. When wpa_supplicant has roamed 173 * using FT, it attempts to set the key before 174 * association has completed, this rejects that attempt 175 * so it will set the key again after assocation. 176 * 177 * TODO: accept the key if we have a station entry and 178 * add it to the device after the station. 179 */ 180 if (!sta || !test_sta_flag(sta, WLAN_STA_ASSOC)) { 181 ieee80211_key_free_unused(key); 182 err = -ENOENT; 183 goto out_unlock; 184 } 185 } 186 187 switch (sdata->vif.type) { 188 case NL80211_IFTYPE_STATION: 189 if (sdata->u.mgd.mfp != IEEE80211_MFP_DISABLED) 190 key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT; 191 break; 192 case NL80211_IFTYPE_AP: 193 case NL80211_IFTYPE_AP_VLAN: 194 /* Keys without a station are used for TX only */ 195 if (key->sta && test_sta_flag(key->sta, WLAN_STA_MFP)) 196 key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT; 197 break; 198 case NL80211_IFTYPE_ADHOC: 199 /* no MFP (yet) */ 200 break; 201 case NL80211_IFTYPE_MESH_POINT: 202 #ifdef CONFIG_MAC80211_MESH 203 if (sdata->u.mesh.security != IEEE80211_MESH_SEC_NONE) 204 key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT; 205 break; 206 #endif 207 case NL80211_IFTYPE_WDS: 208 case NL80211_IFTYPE_MONITOR: 209 case NL80211_IFTYPE_P2P_DEVICE: 210 case NL80211_IFTYPE_UNSPECIFIED: 211 case NUM_NL80211_IFTYPES: 212 case NL80211_IFTYPE_P2P_CLIENT: 213 case NL80211_IFTYPE_P2P_GO: 214 /* shouldn't happen */ 215 WARN_ON_ONCE(1); 216 break; 217 } 218 219 err = ieee80211_key_link(key, sdata, sta); 220 221 out_unlock: 222 mutex_unlock(&sdata->local->sta_mtx); 223 224 return err; 225 } 226 227 static int ieee80211_del_key(struct wiphy *wiphy, struct net_device *dev, 228 u8 key_idx, bool pairwise, const u8 *mac_addr) 229 { 230 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 231 struct ieee80211_local *local = sdata->local; 232 struct sta_info *sta; 233 struct ieee80211_key *key = NULL; 234 int ret; 235 236 mutex_lock(&local->sta_mtx); 237 mutex_lock(&local->key_mtx); 238 239 if (mac_addr) { 240 ret = -ENOENT; 241 242 sta = sta_info_get_bss(sdata, mac_addr); 243 if (!sta) 244 goto out_unlock; 245 246 if (pairwise) 247 key = key_mtx_dereference(local, sta->ptk); 248 else 249 key = key_mtx_dereference(local, sta->gtk[key_idx]); 250 } else 251 key = key_mtx_dereference(local, sdata->keys[key_idx]); 252 253 if (!key) { 254 ret = -ENOENT; 255 goto out_unlock; 256 } 257 258 ieee80211_key_free(key, true); 259 260 ret = 0; 261 out_unlock: 262 mutex_unlock(&local->key_mtx); 263 mutex_unlock(&local->sta_mtx); 264 265 return ret; 266 } 267 268 static int ieee80211_get_key(struct wiphy *wiphy, struct net_device *dev, 269 u8 key_idx, bool pairwise, const u8 *mac_addr, 270 void *cookie, 271 void (*callback)(void *cookie, 272 struct key_params *params)) 273 { 274 struct ieee80211_sub_if_data *sdata; 275 struct sta_info *sta = NULL; 276 u8 seq[6] = {0}; 277 struct key_params params; 278 struct ieee80211_key *key = NULL; 279 u64 pn64; 280 u32 iv32; 281 u16 iv16; 282 int err = -ENOENT; 283 284 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 285 286 rcu_read_lock(); 287 288 if (mac_addr) { 289 sta = sta_info_get_bss(sdata, mac_addr); 290 if (!sta) 291 goto out; 292 293 if (pairwise) 294 key = rcu_dereference(sta->ptk); 295 else if (key_idx < NUM_DEFAULT_KEYS) 296 key = rcu_dereference(sta->gtk[key_idx]); 297 } else 298 key = rcu_dereference(sdata->keys[key_idx]); 299 300 if (!key) 301 goto out; 302 303 memset(¶ms, 0, sizeof(params)); 304 305 params.cipher = key->conf.cipher; 306 307 switch (key->conf.cipher) { 308 case WLAN_CIPHER_SUITE_TKIP: 309 iv32 = key->u.tkip.tx.iv32; 310 iv16 = key->u.tkip.tx.iv16; 311 312 if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE) 313 drv_get_tkip_seq(sdata->local, 314 key->conf.hw_key_idx, 315 &iv32, &iv16); 316 317 seq[0] = iv16 & 0xff; 318 seq[1] = (iv16 >> 8) & 0xff; 319 seq[2] = iv32 & 0xff; 320 seq[3] = (iv32 >> 8) & 0xff; 321 seq[4] = (iv32 >> 16) & 0xff; 322 seq[5] = (iv32 >> 24) & 0xff; 323 params.seq = seq; 324 params.seq_len = 6; 325 break; 326 case WLAN_CIPHER_SUITE_CCMP: 327 pn64 = atomic64_read(&key->u.ccmp.tx_pn); 328 seq[0] = pn64; 329 seq[1] = pn64 >> 8; 330 seq[2] = pn64 >> 16; 331 seq[3] = pn64 >> 24; 332 seq[4] = pn64 >> 32; 333 seq[5] = pn64 >> 40; 334 params.seq = seq; 335 params.seq_len = 6; 336 break; 337 case WLAN_CIPHER_SUITE_AES_CMAC: 338 pn64 = atomic64_read(&key->u.aes_cmac.tx_pn); 339 seq[0] = pn64; 340 seq[1] = pn64 >> 8; 341 seq[2] = pn64 >> 16; 342 seq[3] = pn64 >> 24; 343 seq[4] = pn64 >> 32; 344 seq[5] = pn64 >> 40; 345 params.seq = seq; 346 params.seq_len = 6; 347 break; 348 } 349 350 params.key = key->conf.key; 351 params.key_len = key->conf.keylen; 352 353 callback(cookie, ¶ms); 354 err = 0; 355 356 out: 357 rcu_read_unlock(); 358 return err; 359 } 360 361 static int ieee80211_config_default_key(struct wiphy *wiphy, 362 struct net_device *dev, 363 u8 key_idx, bool uni, 364 bool multi) 365 { 366 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 367 368 ieee80211_set_default_key(sdata, key_idx, uni, multi); 369 370 return 0; 371 } 372 373 static int ieee80211_config_default_mgmt_key(struct wiphy *wiphy, 374 struct net_device *dev, 375 u8 key_idx) 376 { 377 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 378 379 ieee80211_set_default_mgmt_key(sdata, key_idx); 380 381 return 0; 382 } 383 384 void sta_set_rate_info_tx(struct sta_info *sta, 385 const struct ieee80211_tx_rate *rate, 386 struct rate_info *rinfo) 387 { 388 rinfo->flags = 0; 389 if (rate->flags & IEEE80211_TX_RC_MCS) { 390 rinfo->flags |= RATE_INFO_FLAGS_MCS; 391 rinfo->mcs = rate->idx; 392 } else if (rate->flags & IEEE80211_TX_RC_VHT_MCS) { 393 rinfo->flags |= RATE_INFO_FLAGS_VHT_MCS; 394 rinfo->mcs = ieee80211_rate_get_vht_mcs(rate); 395 rinfo->nss = ieee80211_rate_get_vht_nss(rate); 396 } else { 397 struct ieee80211_supported_band *sband; 398 int shift = ieee80211_vif_get_shift(&sta->sdata->vif); 399 u16 brate; 400 401 sband = sta->local->hw.wiphy->bands[ 402 ieee80211_get_sdata_band(sta->sdata)]; 403 brate = sband->bitrates[rate->idx].bitrate; 404 rinfo->legacy = DIV_ROUND_UP(brate, 1 << shift); 405 } 406 if (rate->flags & IEEE80211_TX_RC_40_MHZ_WIDTH) 407 rinfo->flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH; 408 if (rate->flags & IEEE80211_TX_RC_80_MHZ_WIDTH) 409 rinfo->flags |= RATE_INFO_FLAGS_80_MHZ_WIDTH; 410 if (rate->flags & IEEE80211_TX_RC_160_MHZ_WIDTH) 411 rinfo->flags |= RATE_INFO_FLAGS_160_MHZ_WIDTH; 412 if (rate->flags & IEEE80211_TX_RC_SHORT_GI) 413 rinfo->flags |= RATE_INFO_FLAGS_SHORT_GI; 414 } 415 416 void sta_set_rate_info_rx(struct sta_info *sta, struct rate_info *rinfo) 417 { 418 rinfo->flags = 0; 419 420 if (sta->last_rx_rate_flag & RX_FLAG_HT) { 421 rinfo->flags |= RATE_INFO_FLAGS_MCS; 422 rinfo->mcs = sta->last_rx_rate_idx; 423 } else if (sta->last_rx_rate_flag & RX_FLAG_VHT) { 424 rinfo->flags |= RATE_INFO_FLAGS_VHT_MCS; 425 rinfo->nss = sta->last_rx_rate_vht_nss; 426 rinfo->mcs = sta->last_rx_rate_idx; 427 } else { 428 struct ieee80211_supported_band *sband; 429 int shift = ieee80211_vif_get_shift(&sta->sdata->vif); 430 u16 brate; 431 432 sband = sta->local->hw.wiphy->bands[ 433 ieee80211_get_sdata_band(sta->sdata)]; 434 brate = sband->bitrates[sta->last_rx_rate_idx].bitrate; 435 rinfo->legacy = DIV_ROUND_UP(brate, 1 << shift); 436 } 437 438 if (sta->last_rx_rate_flag & RX_FLAG_40MHZ) 439 rinfo->flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH; 440 if (sta->last_rx_rate_flag & RX_FLAG_SHORT_GI) 441 rinfo->flags |= RATE_INFO_FLAGS_SHORT_GI; 442 if (sta->last_rx_rate_flag & RX_FLAG_80MHZ) 443 rinfo->flags |= RATE_INFO_FLAGS_80_MHZ_WIDTH; 444 if (sta->last_rx_rate_flag & RX_FLAG_80P80MHZ) 445 rinfo->flags |= RATE_INFO_FLAGS_80P80_MHZ_WIDTH; 446 if (sta->last_rx_rate_flag & RX_FLAG_160MHZ) 447 rinfo->flags |= RATE_INFO_FLAGS_160_MHZ_WIDTH; 448 } 449 450 static void sta_set_sinfo(struct sta_info *sta, struct station_info *sinfo) 451 { 452 struct ieee80211_sub_if_data *sdata = sta->sdata; 453 struct ieee80211_local *local = sdata->local; 454 struct timespec uptime; 455 u64 packets = 0; 456 int i, ac; 457 458 sinfo->generation = sdata->local->sta_generation; 459 460 sinfo->filled = STATION_INFO_INACTIVE_TIME | 461 STATION_INFO_RX_BYTES64 | 462 STATION_INFO_TX_BYTES64 | 463 STATION_INFO_RX_PACKETS | 464 STATION_INFO_TX_PACKETS | 465 STATION_INFO_TX_RETRIES | 466 STATION_INFO_TX_FAILED | 467 STATION_INFO_TX_BITRATE | 468 STATION_INFO_RX_BITRATE | 469 STATION_INFO_RX_DROP_MISC | 470 STATION_INFO_BSS_PARAM | 471 STATION_INFO_CONNECTED_TIME | 472 STATION_INFO_STA_FLAGS | 473 STATION_INFO_BEACON_LOSS_COUNT; 474 475 do_posix_clock_monotonic_gettime(&uptime); 476 sinfo->connected_time = uptime.tv_sec - sta->last_connected; 477 478 sinfo->inactive_time = jiffies_to_msecs(jiffies - sta->last_rx); 479 sinfo->tx_bytes = 0; 480 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) { 481 sinfo->tx_bytes += sta->tx_bytes[ac]; 482 packets += sta->tx_packets[ac]; 483 } 484 sinfo->tx_packets = packets; 485 sinfo->rx_bytes = sta->rx_bytes; 486 sinfo->rx_packets = sta->rx_packets; 487 sinfo->tx_retries = sta->tx_retry_count; 488 sinfo->tx_failed = sta->tx_retry_failed; 489 sinfo->rx_dropped_misc = sta->rx_dropped; 490 sinfo->beacon_loss_count = sta->beacon_loss_count; 491 492 if ((sta->local->hw.flags & IEEE80211_HW_SIGNAL_DBM) || 493 (sta->local->hw.flags & IEEE80211_HW_SIGNAL_UNSPEC)) { 494 sinfo->filled |= STATION_INFO_SIGNAL | STATION_INFO_SIGNAL_AVG; 495 if (!local->ops->get_rssi || 496 drv_get_rssi(local, sdata, &sta->sta, &sinfo->signal)) 497 sinfo->signal = (s8)sta->last_signal; 498 sinfo->signal_avg = (s8) -ewma_read(&sta->avg_signal); 499 } 500 if (sta->chains) { 501 sinfo->filled |= STATION_INFO_CHAIN_SIGNAL | 502 STATION_INFO_CHAIN_SIGNAL_AVG; 503 504 sinfo->chains = sta->chains; 505 for (i = 0; i < ARRAY_SIZE(sinfo->chain_signal); i++) { 506 sinfo->chain_signal[i] = sta->chain_signal_last[i]; 507 sinfo->chain_signal_avg[i] = 508 (s8) -ewma_read(&sta->chain_signal_avg[i]); 509 } 510 } 511 512 sta_set_rate_info_tx(sta, &sta->last_tx_rate, &sinfo->txrate); 513 sta_set_rate_info_rx(sta, &sinfo->rxrate); 514 515 if (ieee80211_vif_is_mesh(&sdata->vif)) { 516 #ifdef CONFIG_MAC80211_MESH 517 sinfo->filled |= STATION_INFO_LLID | 518 STATION_INFO_PLID | 519 STATION_INFO_PLINK_STATE | 520 STATION_INFO_LOCAL_PM | 521 STATION_INFO_PEER_PM | 522 STATION_INFO_NONPEER_PM; 523 524 sinfo->llid = le16_to_cpu(sta->llid); 525 sinfo->plid = le16_to_cpu(sta->plid); 526 sinfo->plink_state = sta->plink_state; 527 if (test_sta_flag(sta, WLAN_STA_TOFFSET_KNOWN)) { 528 sinfo->filled |= STATION_INFO_T_OFFSET; 529 sinfo->t_offset = sta->t_offset; 530 } 531 sinfo->local_pm = sta->local_pm; 532 sinfo->peer_pm = sta->peer_pm; 533 sinfo->nonpeer_pm = sta->nonpeer_pm; 534 #endif 535 } 536 537 sinfo->bss_param.flags = 0; 538 if (sdata->vif.bss_conf.use_cts_prot) 539 sinfo->bss_param.flags |= BSS_PARAM_FLAGS_CTS_PROT; 540 if (sdata->vif.bss_conf.use_short_preamble) 541 sinfo->bss_param.flags |= BSS_PARAM_FLAGS_SHORT_PREAMBLE; 542 if (sdata->vif.bss_conf.use_short_slot) 543 sinfo->bss_param.flags |= BSS_PARAM_FLAGS_SHORT_SLOT_TIME; 544 sinfo->bss_param.dtim_period = sdata->local->hw.conf.ps_dtim_period; 545 sinfo->bss_param.beacon_interval = sdata->vif.bss_conf.beacon_int; 546 547 sinfo->sta_flags.set = 0; 548 sinfo->sta_flags.mask = BIT(NL80211_STA_FLAG_AUTHORIZED) | 549 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) | 550 BIT(NL80211_STA_FLAG_WME) | 551 BIT(NL80211_STA_FLAG_MFP) | 552 BIT(NL80211_STA_FLAG_AUTHENTICATED) | 553 BIT(NL80211_STA_FLAG_ASSOCIATED) | 554 BIT(NL80211_STA_FLAG_TDLS_PEER); 555 if (test_sta_flag(sta, WLAN_STA_AUTHORIZED)) 556 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_AUTHORIZED); 557 if (test_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE)) 558 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_SHORT_PREAMBLE); 559 if (test_sta_flag(sta, WLAN_STA_WME)) 560 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_WME); 561 if (test_sta_flag(sta, WLAN_STA_MFP)) 562 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_MFP); 563 if (test_sta_flag(sta, WLAN_STA_AUTH)) 564 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_AUTHENTICATED); 565 if (test_sta_flag(sta, WLAN_STA_ASSOC)) 566 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_ASSOCIATED); 567 if (test_sta_flag(sta, WLAN_STA_TDLS_PEER)) 568 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_TDLS_PEER); 569 } 570 571 static const char ieee80211_gstrings_sta_stats[][ETH_GSTRING_LEN] = { 572 "rx_packets", "rx_bytes", "wep_weak_iv_count", 573 "rx_duplicates", "rx_fragments", "rx_dropped", 574 "tx_packets", "tx_bytes", "tx_fragments", 575 "tx_filtered", "tx_retry_failed", "tx_retries", 576 "beacon_loss", "sta_state", "txrate", "rxrate", "signal", 577 "channel", "noise", "ch_time", "ch_time_busy", 578 "ch_time_ext_busy", "ch_time_rx", "ch_time_tx" 579 }; 580 #define STA_STATS_LEN ARRAY_SIZE(ieee80211_gstrings_sta_stats) 581 582 static int ieee80211_get_et_sset_count(struct wiphy *wiphy, 583 struct net_device *dev, 584 int sset) 585 { 586 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 587 int rv = 0; 588 589 if (sset == ETH_SS_STATS) 590 rv += STA_STATS_LEN; 591 592 rv += drv_get_et_sset_count(sdata, sset); 593 594 if (rv == 0) 595 return -EOPNOTSUPP; 596 return rv; 597 } 598 599 static void ieee80211_get_et_stats(struct wiphy *wiphy, 600 struct net_device *dev, 601 struct ethtool_stats *stats, 602 u64 *data) 603 { 604 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 605 struct ieee80211_chanctx_conf *chanctx_conf; 606 struct ieee80211_channel *channel; 607 struct sta_info *sta; 608 struct ieee80211_local *local = sdata->local; 609 struct station_info sinfo; 610 struct survey_info survey; 611 int i, q; 612 #define STA_STATS_SURVEY_LEN 7 613 614 memset(data, 0, sizeof(u64) * STA_STATS_LEN); 615 616 #define ADD_STA_STATS(sta) \ 617 do { \ 618 data[i++] += sta->rx_packets; \ 619 data[i++] += sta->rx_bytes; \ 620 data[i++] += sta->wep_weak_iv_count; \ 621 data[i++] += sta->num_duplicates; \ 622 data[i++] += sta->rx_fragments; \ 623 data[i++] += sta->rx_dropped; \ 624 \ 625 data[i++] += sinfo.tx_packets; \ 626 data[i++] += sinfo.tx_bytes; \ 627 data[i++] += sta->tx_fragments; \ 628 data[i++] += sta->tx_filtered_count; \ 629 data[i++] += sta->tx_retry_failed; \ 630 data[i++] += sta->tx_retry_count; \ 631 data[i++] += sta->beacon_loss_count; \ 632 } while (0) 633 634 /* For Managed stations, find the single station based on BSSID 635 * and use that. For interface types, iterate through all available 636 * stations and add stats for any station that is assigned to this 637 * network device. 638 */ 639 640 mutex_lock(&local->sta_mtx); 641 642 if (sdata->vif.type == NL80211_IFTYPE_STATION) { 643 sta = sta_info_get_bss(sdata, sdata->u.mgd.bssid); 644 645 if (!(sta && !WARN_ON(sta->sdata->dev != dev))) 646 goto do_survey; 647 648 sinfo.filled = 0; 649 sta_set_sinfo(sta, &sinfo); 650 651 i = 0; 652 ADD_STA_STATS(sta); 653 654 data[i++] = sta->sta_state; 655 656 657 if (sinfo.filled & STATION_INFO_TX_BITRATE) 658 data[i] = 100000 * 659 cfg80211_calculate_bitrate(&sinfo.txrate); 660 i++; 661 if (sinfo.filled & STATION_INFO_RX_BITRATE) 662 data[i] = 100000 * 663 cfg80211_calculate_bitrate(&sinfo.rxrate); 664 i++; 665 666 if (sinfo.filled & STATION_INFO_SIGNAL_AVG) 667 data[i] = (u8)sinfo.signal_avg; 668 i++; 669 } else { 670 list_for_each_entry(sta, &local->sta_list, list) { 671 /* Make sure this station belongs to the proper dev */ 672 if (sta->sdata->dev != dev) 673 continue; 674 675 sinfo.filled = 0; 676 sta_set_sinfo(sta, &sinfo); 677 i = 0; 678 ADD_STA_STATS(sta); 679 } 680 } 681 682 do_survey: 683 i = STA_STATS_LEN - STA_STATS_SURVEY_LEN; 684 /* Get survey stats for current channel */ 685 survey.filled = 0; 686 687 rcu_read_lock(); 688 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); 689 if (chanctx_conf) 690 channel = chanctx_conf->def.chan; 691 else 692 channel = NULL; 693 rcu_read_unlock(); 694 695 if (channel) { 696 q = 0; 697 do { 698 survey.filled = 0; 699 if (drv_get_survey(local, q, &survey) != 0) { 700 survey.filled = 0; 701 break; 702 } 703 q++; 704 } while (channel != survey.channel); 705 } 706 707 if (survey.filled) 708 data[i++] = survey.channel->center_freq; 709 else 710 data[i++] = 0; 711 if (survey.filled & SURVEY_INFO_NOISE_DBM) 712 data[i++] = (u8)survey.noise; 713 else 714 data[i++] = -1LL; 715 if (survey.filled & SURVEY_INFO_CHANNEL_TIME) 716 data[i++] = survey.channel_time; 717 else 718 data[i++] = -1LL; 719 if (survey.filled & SURVEY_INFO_CHANNEL_TIME_BUSY) 720 data[i++] = survey.channel_time_busy; 721 else 722 data[i++] = -1LL; 723 if (survey.filled & SURVEY_INFO_CHANNEL_TIME_EXT_BUSY) 724 data[i++] = survey.channel_time_ext_busy; 725 else 726 data[i++] = -1LL; 727 if (survey.filled & SURVEY_INFO_CHANNEL_TIME_RX) 728 data[i++] = survey.channel_time_rx; 729 else 730 data[i++] = -1LL; 731 if (survey.filled & SURVEY_INFO_CHANNEL_TIME_TX) 732 data[i++] = survey.channel_time_tx; 733 else 734 data[i++] = -1LL; 735 736 mutex_unlock(&local->sta_mtx); 737 738 if (WARN_ON(i != STA_STATS_LEN)) 739 return; 740 741 drv_get_et_stats(sdata, stats, &(data[STA_STATS_LEN])); 742 } 743 744 static void ieee80211_get_et_strings(struct wiphy *wiphy, 745 struct net_device *dev, 746 u32 sset, u8 *data) 747 { 748 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 749 int sz_sta_stats = 0; 750 751 if (sset == ETH_SS_STATS) { 752 sz_sta_stats = sizeof(ieee80211_gstrings_sta_stats); 753 memcpy(data, ieee80211_gstrings_sta_stats, sz_sta_stats); 754 } 755 drv_get_et_strings(sdata, sset, &(data[sz_sta_stats])); 756 } 757 758 static int ieee80211_dump_station(struct wiphy *wiphy, struct net_device *dev, 759 int idx, u8 *mac, struct station_info *sinfo) 760 { 761 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 762 struct ieee80211_local *local = sdata->local; 763 struct sta_info *sta; 764 int ret = -ENOENT; 765 766 mutex_lock(&local->sta_mtx); 767 768 sta = sta_info_get_by_idx(sdata, idx); 769 if (sta) { 770 ret = 0; 771 memcpy(mac, sta->sta.addr, ETH_ALEN); 772 sta_set_sinfo(sta, sinfo); 773 } 774 775 mutex_unlock(&local->sta_mtx); 776 777 return ret; 778 } 779 780 static int ieee80211_dump_survey(struct wiphy *wiphy, struct net_device *dev, 781 int idx, struct survey_info *survey) 782 { 783 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); 784 785 return drv_get_survey(local, idx, survey); 786 } 787 788 static int ieee80211_get_station(struct wiphy *wiphy, struct net_device *dev, 789 u8 *mac, struct station_info *sinfo) 790 { 791 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 792 struct ieee80211_local *local = sdata->local; 793 struct sta_info *sta; 794 int ret = -ENOENT; 795 796 mutex_lock(&local->sta_mtx); 797 798 sta = sta_info_get_bss(sdata, mac); 799 if (sta) { 800 ret = 0; 801 sta_set_sinfo(sta, sinfo); 802 } 803 804 mutex_unlock(&local->sta_mtx); 805 806 return ret; 807 } 808 809 static int ieee80211_set_monitor_channel(struct wiphy *wiphy, 810 struct cfg80211_chan_def *chandef) 811 { 812 struct ieee80211_local *local = wiphy_priv(wiphy); 813 struct ieee80211_sub_if_data *sdata; 814 int ret = 0; 815 816 if (cfg80211_chandef_identical(&local->monitor_chandef, chandef)) 817 return 0; 818 819 mutex_lock(&local->iflist_mtx); 820 if (local->use_chanctx) { 821 sdata = rcu_dereference_protected( 822 local->monitor_sdata, 823 lockdep_is_held(&local->iflist_mtx)); 824 if (sdata) { 825 ieee80211_vif_release_channel(sdata); 826 ret = ieee80211_vif_use_channel(sdata, chandef, 827 IEEE80211_CHANCTX_EXCLUSIVE); 828 } 829 } else if (local->open_count == local->monitors) { 830 local->_oper_chandef = *chandef; 831 ieee80211_hw_config(local, 0); 832 } 833 834 if (ret == 0) 835 local->monitor_chandef = *chandef; 836 mutex_unlock(&local->iflist_mtx); 837 838 return ret; 839 } 840 841 static int ieee80211_set_probe_resp(struct ieee80211_sub_if_data *sdata, 842 const u8 *resp, size_t resp_len) 843 { 844 struct probe_resp *new, *old; 845 846 if (!resp || !resp_len) 847 return 1; 848 849 old = rtnl_dereference(sdata->u.ap.probe_resp); 850 851 new = kzalloc(sizeof(struct probe_resp) + resp_len, GFP_KERNEL); 852 if (!new) 853 return -ENOMEM; 854 855 new->len = resp_len; 856 memcpy(new->data, resp, resp_len); 857 858 rcu_assign_pointer(sdata->u.ap.probe_resp, new); 859 if (old) 860 kfree_rcu(old, rcu_head); 861 862 return 0; 863 } 864 865 int ieee80211_assign_beacon(struct ieee80211_sub_if_data *sdata, 866 struct cfg80211_beacon_data *params) 867 { 868 struct beacon_data *new, *old; 869 int new_head_len, new_tail_len; 870 int size, err; 871 u32 changed = BSS_CHANGED_BEACON; 872 873 old = rtnl_dereference(sdata->u.ap.beacon); 874 875 /* Need to have a beacon head if we don't have one yet */ 876 if (!params->head && !old) 877 return -EINVAL; 878 879 /* new or old head? */ 880 if (params->head) 881 new_head_len = params->head_len; 882 else 883 new_head_len = old->head_len; 884 885 /* new or old tail? */ 886 if (params->tail || !old) 887 /* params->tail_len will be zero for !params->tail */ 888 new_tail_len = params->tail_len; 889 else 890 new_tail_len = old->tail_len; 891 892 size = sizeof(*new) + new_head_len + new_tail_len; 893 894 new = kzalloc(size, GFP_KERNEL); 895 if (!new) 896 return -ENOMEM; 897 898 /* start filling the new info now */ 899 900 /* 901 * pointers go into the block we allocated, 902 * memory is | beacon_data | head | tail | 903 */ 904 new->head = ((u8 *) new) + sizeof(*new); 905 new->tail = new->head + new_head_len; 906 new->head_len = new_head_len; 907 new->tail_len = new_tail_len; 908 909 /* copy in head */ 910 if (params->head) 911 memcpy(new->head, params->head, new_head_len); 912 else 913 memcpy(new->head, old->head, new_head_len); 914 915 /* copy in optional tail */ 916 if (params->tail) 917 memcpy(new->tail, params->tail, new_tail_len); 918 else 919 if (old) 920 memcpy(new->tail, old->tail, new_tail_len); 921 922 err = ieee80211_set_probe_resp(sdata, params->probe_resp, 923 params->probe_resp_len); 924 if (err < 0) 925 return err; 926 if (err == 0) 927 changed |= BSS_CHANGED_AP_PROBE_RESP; 928 929 rcu_assign_pointer(sdata->u.ap.beacon, new); 930 931 if (old) 932 kfree_rcu(old, rcu_head); 933 934 return changed; 935 } 936 937 static int ieee80211_start_ap(struct wiphy *wiphy, struct net_device *dev, 938 struct cfg80211_ap_settings *params) 939 { 940 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 941 struct beacon_data *old; 942 struct ieee80211_sub_if_data *vlan; 943 u32 changed = BSS_CHANGED_BEACON_INT | 944 BSS_CHANGED_BEACON_ENABLED | 945 BSS_CHANGED_BEACON | 946 BSS_CHANGED_SSID | 947 BSS_CHANGED_P2P_PS; 948 int err; 949 950 old = rtnl_dereference(sdata->u.ap.beacon); 951 if (old) 952 return -EALREADY; 953 954 /* TODO: make hostapd tell us what it wants */ 955 sdata->smps_mode = IEEE80211_SMPS_OFF; 956 sdata->needed_rx_chains = sdata->local->rx_chains; 957 sdata->radar_required = params->radar_required; 958 959 err = ieee80211_vif_use_channel(sdata, ¶ms->chandef, 960 IEEE80211_CHANCTX_SHARED); 961 if (err) 962 return err; 963 ieee80211_vif_copy_chanctx_to_vlans(sdata, false); 964 965 /* 966 * Apply control port protocol, this allows us to 967 * not encrypt dynamic WEP control frames. 968 */ 969 sdata->control_port_protocol = params->crypto.control_port_ethertype; 970 sdata->control_port_no_encrypt = params->crypto.control_port_no_encrypt; 971 list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) { 972 vlan->control_port_protocol = 973 params->crypto.control_port_ethertype; 974 vlan->control_port_no_encrypt = 975 params->crypto.control_port_no_encrypt; 976 } 977 978 sdata->vif.bss_conf.beacon_int = params->beacon_interval; 979 sdata->vif.bss_conf.dtim_period = params->dtim_period; 980 sdata->vif.bss_conf.enable_beacon = true; 981 982 sdata->vif.bss_conf.ssid_len = params->ssid_len; 983 if (params->ssid_len) 984 memcpy(sdata->vif.bss_conf.ssid, params->ssid, 985 params->ssid_len); 986 sdata->vif.bss_conf.hidden_ssid = 987 (params->hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE); 988 989 memset(&sdata->vif.bss_conf.p2p_noa_attr, 0, 990 sizeof(sdata->vif.bss_conf.p2p_noa_attr)); 991 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow = 992 params->p2p_ctwindow & IEEE80211_P2P_OPPPS_CTWINDOW_MASK; 993 if (params->p2p_opp_ps) 994 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |= 995 IEEE80211_P2P_OPPPS_ENABLE_BIT; 996 997 err = ieee80211_assign_beacon(sdata, ¶ms->beacon); 998 if (err < 0) 999 return err; 1000 changed |= err; 1001 1002 err = drv_start_ap(sdata->local, sdata); 1003 if (err) { 1004 old = rtnl_dereference(sdata->u.ap.beacon); 1005 if (old) 1006 kfree_rcu(old, rcu_head); 1007 RCU_INIT_POINTER(sdata->u.ap.beacon, NULL); 1008 return err; 1009 } 1010 1011 ieee80211_bss_info_change_notify(sdata, changed); 1012 1013 netif_carrier_on(dev); 1014 list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) 1015 netif_carrier_on(vlan->dev); 1016 1017 return 0; 1018 } 1019 1020 static int ieee80211_change_beacon(struct wiphy *wiphy, struct net_device *dev, 1021 struct cfg80211_beacon_data *params) 1022 { 1023 struct ieee80211_sub_if_data *sdata; 1024 struct beacon_data *old; 1025 int err; 1026 1027 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1028 1029 /* don't allow changing the beacon while CSA is in place - offset 1030 * of channel switch counter may change 1031 */ 1032 if (sdata->vif.csa_active) 1033 return -EBUSY; 1034 1035 old = rtnl_dereference(sdata->u.ap.beacon); 1036 if (!old) 1037 return -ENOENT; 1038 1039 err = ieee80211_assign_beacon(sdata, params); 1040 if (err < 0) 1041 return err; 1042 ieee80211_bss_info_change_notify(sdata, err); 1043 return 0; 1044 } 1045 1046 static int ieee80211_stop_ap(struct wiphy *wiphy, struct net_device *dev) 1047 { 1048 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1049 struct ieee80211_sub_if_data *vlan; 1050 struct ieee80211_local *local = sdata->local; 1051 struct beacon_data *old_beacon; 1052 struct probe_resp *old_probe_resp; 1053 1054 old_beacon = rtnl_dereference(sdata->u.ap.beacon); 1055 if (!old_beacon) 1056 return -ENOENT; 1057 old_probe_resp = rtnl_dereference(sdata->u.ap.probe_resp); 1058 1059 /* abort any running channel switch */ 1060 sdata->vif.csa_active = false; 1061 cancel_work_sync(&sdata->csa_finalize_work); 1062 cancel_work_sync(&sdata->u.ap.request_smps_work); 1063 1064 /* turn off carrier for this interface and dependent VLANs */ 1065 list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) 1066 netif_carrier_off(vlan->dev); 1067 netif_carrier_off(dev); 1068 1069 /* remove beacon and probe response */ 1070 RCU_INIT_POINTER(sdata->u.ap.beacon, NULL); 1071 RCU_INIT_POINTER(sdata->u.ap.probe_resp, NULL); 1072 kfree_rcu(old_beacon, rcu_head); 1073 if (old_probe_resp) 1074 kfree_rcu(old_probe_resp, rcu_head); 1075 1076 list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) 1077 sta_info_flush_defer(vlan); 1078 sta_info_flush_defer(sdata); 1079 synchronize_net(); 1080 rcu_barrier(); 1081 list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) { 1082 sta_info_flush_cleanup(vlan); 1083 ieee80211_free_keys(vlan); 1084 } 1085 sta_info_flush_cleanup(sdata); 1086 ieee80211_free_keys(sdata); 1087 1088 sdata->vif.bss_conf.enable_beacon = false; 1089 sdata->vif.bss_conf.ssid_len = 0; 1090 clear_bit(SDATA_STATE_OFFCHANNEL_BEACON_STOPPED, &sdata->state); 1091 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED); 1092 1093 if (sdata->wdev.cac_started) { 1094 cancel_delayed_work_sync(&sdata->dfs_cac_timer_work); 1095 cfg80211_cac_event(sdata->dev, NL80211_RADAR_CAC_ABORTED, 1096 GFP_KERNEL); 1097 } 1098 1099 drv_stop_ap(sdata->local, sdata); 1100 1101 /* free all potentially still buffered bcast frames */ 1102 local->total_ps_buffered -= skb_queue_len(&sdata->u.ap.ps.bc_buf); 1103 skb_queue_purge(&sdata->u.ap.ps.bc_buf); 1104 1105 ieee80211_vif_copy_chanctx_to_vlans(sdata, true); 1106 ieee80211_vif_release_channel(sdata); 1107 1108 return 0; 1109 } 1110 1111 /* Layer 2 Update frame (802.2 Type 1 LLC XID Update response) */ 1112 struct iapp_layer2_update { 1113 u8 da[ETH_ALEN]; /* broadcast */ 1114 u8 sa[ETH_ALEN]; /* STA addr */ 1115 __be16 len; /* 6 */ 1116 u8 dsap; /* 0 */ 1117 u8 ssap; /* 0 */ 1118 u8 control; 1119 u8 xid_info[3]; 1120 } __packed; 1121 1122 static void ieee80211_send_layer2_update(struct sta_info *sta) 1123 { 1124 struct iapp_layer2_update *msg; 1125 struct sk_buff *skb; 1126 1127 /* Send Level 2 Update Frame to update forwarding tables in layer 2 1128 * bridge devices */ 1129 1130 skb = dev_alloc_skb(sizeof(*msg)); 1131 if (!skb) 1132 return; 1133 msg = (struct iapp_layer2_update *)skb_put(skb, sizeof(*msg)); 1134 1135 /* 802.2 Type 1 Logical Link Control (LLC) Exchange Identifier (XID) 1136 * Update response frame; IEEE Std 802.2-1998, 5.4.1.2.1 */ 1137 1138 eth_broadcast_addr(msg->da); 1139 memcpy(msg->sa, sta->sta.addr, ETH_ALEN); 1140 msg->len = htons(6); 1141 msg->dsap = 0; 1142 msg->ssap = 0x01; /* NULL LSAP, CR Bit: Response */ 1143 msg->control = 0xaf; /* XID response lsb.1111F101. 1144 * F=0 (no poll command; unsolicited frame) */ 1145 msg->xid_info[0] = 0x81; /* XID format identifier */ 1146 msg->xid_info[1] = 1; /* LLC types/classes: Type 1 LLC */ 1147 msg->xid_info[2] = 0; /* XID sender's receive window size (RW) */ 1148 1149 skb->dev = sta->sdata->dev; 1150 skb->protocol = eth_type_trans(skb, sta->sdata->dev); 1151 memset(skb->cb, 0, sizeof(skb->cb)); 1152 netif_rx_ni(skb); 1153 } 1154 1155 static int sta_apply_auth_flags(struct ieee80211_local *local, 1156 struct sta_info *sta, 1157 u32 mask, u32 set) 1158 { 1159 int ret; 1160 1161 if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED) && 1162 set & BIT(NL80211_STA_FLAG_AUTHENTICATED) && 1163 !test_sta_flag(sta, WLAN_STA_AUTH)) { 1164 ret = sta_info_move_state(sta, IEEE80211_STA_AUTH); 1165 if (ret) 1166 return ret; 1167 } 1168 1169 if (mask & BIT(NL80211_STA_FLAG_ASSOCIATED) && 1170 set & BIT(NL80211_STA_FLAG_ASSOCIATED) && 1171 !test_sta_flag(sta, WLAN_STA_ASSOC)) { 1172 ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC); 1173 if (ret) 1174 return ret; 1175 } 1176 1177 if (mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) { 1178 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED)) 1179 ret = sta_info_move_state(sta, IEEE80211_STA_AUTHORIZED); 1180 else if (test_sta_flag(sta, WLAN_STA_AUTHORIZED)) 1181 ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC); 1182 else 1183 ret = 0; 1184 if (ret) 1185 return ret; 1186 } 1187 1188 if (mask & BIT(NL80211_STA_FLAG_ASSOCIATED) && 1189 !(set & BIT(NL80211_STA_FLAG_ASSOCIATED)) && 1190 test_sta_flag(sta, WLAN_STA_ASSOC)) { 1191 ret = sta_info_move_state(sta, IEEE80211_STA_AUTH); 1192 if (ret) 1193 return ret; 1194 } 1195 1196 if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED) && 1197 !(set & BIT(NL80211_STA_FLAG_AUTHENTICATED)) && 1198 test_sta_flag(sta, WLAN_STA_AUTH)) { 1199 ret = sta_info_move_state(sta, IEEE80211_STA_NONE); 1200 if (ret) 1201 return ret; 1202 } 1203 1204 return 0; 1205 } 1206 1207 static int sta_apply_parameters(struct ieee80211_local *local, 1208 struct sta_info *sta, 1209 struct station_parameters *params) 1210 { 1211 int ret = 0; 1212 struct ieee80211_supported_band *sband; 1213 struct ieee80211_sub_if_data *sdata = sta->sdata; 1214 enum ieee80211_band band = ieee80211_get_sdata_band(sdata); 1215 u32 mask, set; 1216 1217 sband = local->hw.wiphy->bands[band]; 1218 1219 mask = params->sta_flags_mask; 1220 set = params->sta_flags_set; 1221 1222 if (ieee80211_vif_is_mesh(&sdata->vif)) { 1223 /* 1224 * In mesh mode, ASSOCIATED isn't part of the nl80211 1225 * API but must follow AUTHENTICATED for driver state. 1226 */ 1227 if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED)) 1228 mask |= BIT(NL80211_STA_FLAG_ASSOCIATED); 1229 if (set & BIT(NL80211_STA_FLAG_AUTHENTICATED)) 1230 set |= BIT(NL80211_STA_FLAG_ASSOCIATED); 1231 } else if (test_sta_flag(sta, WLAN_STA_TDLS_PEER)) { 1232 /* 1233 * TDLS -- everything follows authorized, but 1234 * only becoming authorized is possible, not 1235 * going back 1236 */ 1237 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED)) { 1238 set |= BIT(NL80211_STA_FLAG_AUTHENTICATED) | 1239 BIT(NL80211_STA_FLAG_ASSOCIATED); 1240 mask |= BIT(NL80211_STA_FLAG_AUTHENTICATED) | 1241 BIT(NL80211_STA_FLAG_ASSOCIATED); 1242 } 1243 } 1244 1245 ret = sta_apply_auth_flags(local, sta, mask, set); 1246 if (ret) 1247 return ret; 1248 1249 if (mask & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE)) { 1250 if (set & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE)) 1251 set_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE); 1252 else 1253 clear_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE); 1254 } 1255 1256 if (mask & BIT(NL80211_STA_FLAG_WME)) { 1257 if (set & BIT(NL80211_STA_FLAG_WME)) { 1258 set_sta_flag(sta, WLAN_STA_WME); 1259 sta->sta.wme = true; 1260 } else { 1261 clear_sta_flag(sta, WLAN_STA_WME); 1262 sta->sta.wme = false; 1263 } 1264 } 1265 1266 if (mask & BIT(NL80211_STA_FLAG_MFP)) { 1267 if (set & BIT(NL80211_STA_FLAG_MFP)) 1268 set_sta_flag(sta, WLAN_STA_MFP); 1269 else 1270 clear_sta_flag(sta, WLAN_STA_MFP); 1271 } 1272 1273 if (mask & BIT(NL80211_STA_FLAG_TDLS_PEER)) { 1274 if (set & BIT(NL80211_STA_FLAG_TDLS_PEER)) 1275 set_sta_flag(sta, WLAN_STA_TDLS_PEER); 1276 else 1277 clear_sta_flag(sta, WLAN_STA_TDLS_PEER); 1278 } 1279 1280 if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD) { 1281 sta->sta.uapsd_queues = params->uapsd_queues; 1282 sta->sta.max_sp = params->max_sp; 1283 } 1284 1285 /* 1286 * cfg80211 validates this (1-2007) and allows setting the AID 1287 * only when creating a new station entry 1288 */ 1289 if (params->aid) 1290 sta->sta.aid = params->aid; 1291 1292 /* 1293 * Some of the following updates would be racy if called on an 1294 * existing station, via ieee80211_change_station(). However, 1295 * all such changes are rejected by cfg80211 except for updates 1296 * changing the supported rates on an existing but not yet used 1297 * TDLS peer. 1298 */ 1299 1300 if (params->listen_interval >= 0) 1301 sta->listen_interval = params->listen_interval; 1302 1303 if (params->supported_rates) { 1304 ieee80211_parse_bitrates(&sdata->vif.bss_conf.chandef, 1305 sband, params->supported_rates, 1306 params->supported_rates_len, 1307 &sta->sta.supp_rates[band]); 1308 } 1309 1310 if (params->ht_capa) 1311 ieee80211_ht_cap_ie_to_sta_ht_cap(sdata, sband, 1312 params->ht_capa, sta); 1313 1314 if (params->vht_capa) 1315 ieee80211_vht_cap_ie_to_sta_vht_cap(sdata, sband, 1316 params->vht_capa, sta); 1317 1318 if (ieee80211_vif_is_mesh(&sdata->vif)) { 1319 #ifdef CONFIG_MAC80211_MESH 1320 u32 changed = 0; 1321 1322 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE) { 1323 switch (params->plink_state) { 1324 case NL80211_PLINK_ESTAB: 1325 if (sta->plink_state != NL80211_PLINK_ESTAB) 1326 changed = mesh_plink_inc_estab_count( 1327 sdata); 1328 sta->plink_state = params->plink_state; 1329 1330 ieee80211_mps_sta_status_update(sta); 1331 changed |= ieee80211_mps_set_sta_local_pm(sta, 1332 sdata->u.mesh.mshcfg.power_mode); 1333 break; 1334 case NL80211_PLINK_LISTEN: 1335 case NL80211_PLINK_BLOCKED: 1336 case NL80211_PLINK_OPN_SNT: 1337 case NL80211_PLINK_OPN_RCVD: 1338 case NL80211_PLINK_CNF_RCVD: 1339 case NL80211_PLINK_HOLDING: 1340 if (sta->plink_state == NL80211_PLINK_ESTAB) 1341 changed = mesh_plink_dec_estab_count( 1342 sdata); 1343 sta->plink_state = params->plink_state; 1344 1345 ieee80211_mps_sta_status_update(sta); 1346 changed |= ieee80211_mps_set_sta_local_pm(sta, 1347 NL80211_MESH_POWER_UNKNOWN); 1348 break; 1349 default: 1350 /* nothing */ 1351 break; 1352 } 1353 } 1354 1355 switch (params->plink_action) { 1356 case NL80211_PLINK_ACTION_NO_ACTION: 1357 /* nothing */ 1358 break; 1359 case NL80211_PLINK_ACTION_OPEN: 1360 changed |= mesh_plink_open(sta); 1361 break; 1362 case NL80211_PLINK_ACTION_BLOCK: 1363 changed |= mesh_plink_block(sta); 1364 break; 1365 } 1366 1367 if (params->local_pm) 1368 changed |= 1369 ieee80211_mps_set_sta_local_pm(sta, 1370 params->local_pm); 1371 ieee80211_bss_info_change_notify(sdata, changed); 1372 #endif 1373 } 1374 1375 return 0; 1376 } 1377 1378 static int ieee80211_add_station(struct wiphy *wiphy, struct net_device *dev, 1379 u8 *mac, struct station_parameters *params) 1380 { 1381 struct ieee80211_local *local = wiphy_priv(wiphy); 1382 struct sta_info *sta; 1383 struct ieee80211_sub_if_data *sdata; 1384 int err; 1385 int layer2_update; 1386 1387 if (params->vlan) { 1388 sdata = IEEE80211_DEV_TO_SUB_IF(params->vlan); 1389 1390 if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN && 1391 sdata->vif.type != NL80211_IFTYPE_AP) 1392 return -EINVAL; 1393 } else 1394 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1395 1396 if (ether_addr_equal(mac, sdata->vif.addr)) 1397 return -EINVAL; 1398 1399 if (is_multicast_ether_addr(mac)) 1400 return -EINVAL; 1401 1402 sta = sta_info_alloc(sdata, mac, GFP_KERNEL); 1403 if (!sta) 1404 return -ENOMEM; 1405 1406 /* 1407 * defaults -- if userspace wants something else we'll 1408 * change it accordingly in sta_apply_parameters() 1409 */ 1410 if (!(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))) { 1411 sta_info_pre_move_state(sta, IEEE80211_STA_AUTH); 1412 sta_info_pre_move_state(sta, IEEE80211_STA_ASSOC); 1413 } 1414 1415 err = sta_apply_parameters(local, sta, params); 1416 if (err) { 1417 sta_info_free(local, sta); 1418 return err; 1419 } 1420 1421 /* 1422 * for TDLS, rate control should be initialized only when 1423 * rates are known and station is marked authorized 1424 */ 1425 if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER)) 1426 rate_control_rate_init(sta); 1427 1428 layer2_update = sdata->vif.type == NL80211_IFTYPE_AP_VLAN || 1429 sdata->vif.type == NL80211_IFTYPE_AP; 1430 1431 err = sta_info_insert_rcu(sta); 1432 if (err) { 1433 rcu_read_unlock(); 1434 return err; 1435 } 1436 1437 if (layer2_update) 1438 ieee80211_send_layer2_update(sta); 1439 1440 rcu_read_unlock(); 1441 1442 return 0; 1443 } 1444 1445 static int ieee80211_del_station(struct wiphy *wiphy, struct net_device *dev, 1446 u8 *mac) 1447 { 1448 struct ieee80211_sub_if_data *sdata; 1449 1450 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1451 1452 if (mac) 1453 return sta_info_destroy_addr_bss(sdata, mac); 1454 1455 sta_info_flush(sdata); 1456 return 0; 1457 } 1458 1459 static int ieee80211_change_station(struct wiphy *wiphy, 1460 struct net_device *dev, u8 *mac, 1461 struct station_parameters *params) 1462 { 1463 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1464 struct ieee80211_local *local = wiphy_priv(wiphy); 1465 struct sta_info *sta; 1466 struct ieee80211_sub_if_data *vlansdata; 1467 enum cfg80211_station_type statype; 1468 int err; 1469 1470 mutex_lock(&local->sta_mtx); 1471 1472 sta = sta_info_get_bss(sdata, mac); 1473 if (!sta) { 1474 err = -ENOENT; 1475 goto out_err; 1476 } 1477 1478 switch (sdata->vif.type) { 1479 case NL80211_IFTYPE_MESH_POINT: 1480 if (sdata->u.mesh.user_mpm) 1481 statype = CFG80211_STA_MESH_PEER_USER; 1482 else 1483 statype = CFG80211_STA_MESH_PEER_KERNEL; 1484 break; 1485 case NL80211_IFTYPE_ADHOC: 1486 statype = CFG80211_STA_IBSS; 1487 break; 1488 case NL80211_IFTYPE_STATION: 1489 if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER)) { 1490 statype = CFG80211_STA_AP_STA; 1491 break; 1492 } 1493 if (test_sta_flag(sta, WLAN_STA_AUTHORIZED)) 1494 statype = CFG80211_STA_TDLS_PEER_ACTIVE; 1495 else 1496 statype = CFG80211_STA_TDLS_PEER_SETUP; 1497 break; 1498 case NL80211_IFTYPE_AP: 1499 case NL80211_IFTYPE_AP_VLAN: 1500 statype = CFG80211_STA_AP_CLIENT; 1501 break; 1502 default: 1503 err = -EOPNOTSUPP; 1504 goto out_err; 1505 } 1506 1507 err = cfg80211_check_station_change(wiphy, params, statype); 1508 if (err) 1509 goto out_err; 1510 1511 if (params->vlan && params->vlan != sta->sdata->dev) { 1512 bool prev_4addr = false; 1513 bool new_4addr = false; 1514 1515 vlansdata = IEEE80211_DEV_TO_SUB_IF(params->vlan); 1516 1517 if (params->vlan->ieee80211_ptr->use_4addr) { 1518 if (vlansdata->u.vlan.sta) { 1519 err = -EBUSY; 1520 goto out_err; 1521 } 1522 1523 rcu_assign_pointer(vlansdata->u.vlan.sta, sta); 1524 new_4addr = true; 1525 } 1526 1527 if (sta->sdata->vif.type == NL80211_IFTYPE_AP_VLAN && 1528 sta->sdata->u.vlan.sta) { 1529 rcu_assign_pointer(sta->sdata->u.vlan.sta, NULL); 1530 prev_4addr = true; 1531 } 1532 1533 sta->sdata = vlansdata; 1534 1535 if (sta->sta_state == IEEE80211_STA_AUTHORIZED && 1536 prev_4addr != new_4addr) { 1537 if (new_4addr) 1538 atomic_dec(&sta->sdata->bss->num_mcast_sta); 1539 else 1540 atomic_inc(&sta->sdata->bss->num_mcast_sta); 1541 } 1542 1543 ieee80211_send_layer2_update(sta); 1544 } 1545 1546 err = sta_apply_parameters(local, sta, params); 1547 if (err) 1548 goto out_err; 1549 1550 /* When peer becomes authorized, init rate control as well */ 1551 if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) && 1552 test_sta_flag(sta, WLAN_STA_AUTHORIZED)) 1553 rate_control_rate_init(sta); 1554 1555 mutex_unlock(&local->sta_mtx); 1556 1557 if ((sdata->vif.type == NL80211_IFTYPE_AP || 1558 sdata->vif.type == NL80211_IFTYPE_AP_VLAN) && 1559 sta->known_smps_mode != sta->sdata->bss->req_smps && 1560 test_sta_flag(sta, WLAN_STA_AUTHORIZED) && 1561 sta_info_tx_streams(sta) != 1) { 1562 ht_dbg(sta->sdata, 1563 "%pM just authorized and MIMO capable - update SMPS\n", 1564 sta->sta.addr); 1565 ieee80211_send_smps_action(sta->sdata, 1566 sta->sdata->bss->req_smps, 1567 sta->sta.addr, 1568 sta->sdata->vif.bss_conf.bssid); 1569 } 1570 1571 if (sdata->vif.type == NL80211_IFTYPE_STATION && 1572 params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) { 1573 ieee80211_recalc_ps(local, -1); 1574 ieee80211_recalc_ps_vif(sdata); 1575 } 1576 1577 return 0; 1578 out_err: 1579 mutex_unlock(&local->sta_mtx); 1580 return err; 1581 } 1582 1583 #ifdef CONFIG_MAC80211_MESH 1584 static int ieee80211_add_mpath(struct wiphy *wiphy, struct net_device *dev, 1585 u8 *dst, u8 *next_hop) 1586 { 1587 struct ieee80211_sub_if_data *sdata; 1588 struct mesh_path *mpath; 1589 struct sta_info *sta; 1590 1591 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1592 1593 rcu_read_lock(); 1594 sta = sta_info_get(sdata, next_hop); 1595 if (!sta) { 1596 rcu_read_unlock(); 1597 return -ENOENT; 1598 } 1599 1600 mpath = mesh_path_add(sdata, dst); 1601 if (IS_ERR(mpath)) { 1602 rcu_read_unlock(); 1603 return PTR_ERR(mpath); 1604 } 1605 1606 mesh_path_fix_nexthop(mpath, sta); 1607 1608 rcu_read_unlock(); 1609 return 0; 1610 } 1611 1612 static int ieee80211_del_mpath(struct wiphy *wiphy, struct net_device *dev, 1613 u8 *dst) 1614 { 1615 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1616 1617 if (dst) 1618 return mesh_path_del(sdata, dst); 1619 1620 mesh_path_flush_by_iface(sdata); 1621 return 0; 1622 } 1623 1624 static int ieee80211_change_mpath(struct wiphy *wiphy, 1625 struct net_device *dev, 1626 u8 *dst, u8 *next_hop) 1627 { 1628 struct ieee80211_sub_if_data *sdata; 1629 struct mesh_path *mpath; 1630 struct sta_info *sta; 1631 1632 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1633 1634 rcu_read_lock(); 1635 1636 sta = sta_info_get(sdata, next_hop); 1637 if (!sta) { 1638 rcu_read_unlock(); 1639 return -ENOENT; 1640 } 1641 1642 mpath = mesh_path_lookup(sdata, dst); 1643 if (!mpath) { 1644 rcu_read_unlock(); 1645 return -ENOENT; 1646 } 1647 1648 mesh_path_fix_nexthop(mpath, sta); 1649 1650 rcu_read_unlock(); 1651 return 0; 1652 } 1653 1654 static void mpath_set_pinfo(struct mesh_path *mpath, u8 *next_hop, 1655 struct mpath_info *pinfo) 1656 { 1657 struct sta_info *next_hop_sta = rcu_dereference(mpath->next_hop); 1658 1659 if (next_hop_sta) 1660 memcpy(next_hop, next_hop_sta->sta.addr, ETH_ALEN); 1661 else 1662 memset(next_hop, 0, ETH_ALEN); 1663 1664 memset(pinfo, 0, sizeof(*pinfo)); 1665 1666 pinfo->generation = mesh_paths_generation; 1667 1668 pinfo->filled = MPATH_INFO_FRAME_QLEN | 1669 MPATH_INFO_SN | 1670 MPATH_INFO_METRIC | 1671 MPATH_INFO_EXPTIME | 1672 MPATH_INFO_DISCOVERY_TIMEOUT | 1673 MPATH_INFO_DISCOVERY_RETRIES | 1674 MPATH_INFO_FLAGS; 1675 1676 pinfo->frame_qlen = mpath->frame_queue.qlen; 1677 pinfo->sn = mpath->sn; 1678 pinfo->metric = mpath->metric; 1679 if (time_before(jiffies, mpath->exp_time)) 1680 pinfo->exptime = jiffies_to_msecs(mpath->exp_time - jiffies); 1681 pinfo->discovery_timeout = 1682 jiffies_to_msecs(mpath->discovery_timeout); 1683 pinfo->discovery_retries = mpath->discovery_retries; 1684 if (mpath->flags & MESH_PATH_ACTIVE) 1685 pinfo->flags |= NL80211_MPATH_FLAG_ACTIVE; 1686 if (mpath->flags & MESH_PATH_RESOLVING) 1687 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING; 1688 if (mpath->flags & MESH_PATH_SN_VALID) 1689 pinfo->flags |= NL80211_MPATH_FLAG_SN_VALID; 1690 if (mpath->flags & MESH_PATH_FIXED) 1691 pinfo->flags |= NL80211_MPATH_FLAG_FIXED; 1692 if (mpath->flags & MESH_PATH_RESOLVED) 1693 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVED; 1694 } 1695 1696 static int ieee80211_get_mpath(struct wiphy *wiphy, struct net_device *dev, 1697 u8 *dst, u8 *next_hop, struct mpath_info *pinfo) 1698 1699 { 1700 struct ieee80211_sub_if_data *sdata; 1701 struct mesh_path *mpath; 1702 1703 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1704 1705 rcu_read_lock(); 1706 mpath = mesh_path_lookup(sdata, dst); 1707 if (!mpath) { 1708 rcu_read_unlock(); 1709 return -ENOENT; 1710 } 1711 memcpy(dst, mpath->dst, ETH_ALEN); 1712 mpath_set_pinfo(mpath, next_hop, pinfo); 1713 rcu_read_unlock(); 1714 return 0; 1715 } 1716 1717 static int ieee80211_dump_mpath(struct wiphy *wiphy, struct net_device *dev, 1718 int idx, u8 *dst, u8 *next_hop, 1719 struct mpath_info *pinfo) 1720 { 1721 struct ieee80211_sub_if_data *sdata; 1722 struct mesh_path *mpath; 1723 1724 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1725 1726 rcu_read_lock(); 1727 mpath = mesh_path_lookup_by_idx(sdata, idx); 1728 if (!mpath) { 1729 rcu_read_unlock(); 1730 return -ENOENT; 1731 } 1732 memcpy(dst, mpath->dst, ETH_ALEN); 1733 mpath_set_pinfo(mpath, next_hop, pinfo); 1734 rcu_read_unlock(); 1735 return 0; 1736 } 1737 1738 static int ieee80211_get_mesh_config(struct wiphy *wiphy, 1739 struct net_device *dev, 1740 struct mesh_config *conf) 1741 { 1742 struct ieee80211_sub_if_data *sdata; 1743 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1744 1745 memcpy(conf, &(sdata->u.mesh.mshcfg), sizeof(struct mesh_config)); 1746 return 0; 1747 } 1748 1749 static inline bool _chg_mesh_attr(enum nl80211_meshconf_params parm, u32 mask) 1750 { 1751 return (mask >> (parm-1)) & 0x1; 1752 } 1753 1754 static int copy_mesh_setup(struct ieee80211_if_mesh *ifmsh, 1755 const struct mesh_setup *setup) 1756 { 1757 u8 *new_ie; 1758 const u8 *old_ie; 1759 struct ieee80211_sub_if_data *sdata = container_of(ifmsh, 1760 struct ieee80211_sub_if_data, u.mesh); 1761 1762 /* allocate information elements */ 1763 new_ie = NULL; 1764 old_ie = ifmsh->ie; 1765 1766 if (setup->ie_len) { 1767 new_ie = kmemdup(setup->ie, setup->ie_len, 1768 GFP_KERNEL); 1769 if (!new_ie) 1770 return -ENOMEM; 1771 } 1772 ifmsh->ie_len = setup->ie_len; 1773 ifmsh->ie = new_ie; 1774 kfree(old_ie); 1775 1776 /* now copy the rest of the setup parameters */ 1777 ifmsh->mesh_id_len = setup->mesh_id_len; 1778 memcpy(ifmsh->mesh_id, setup->mesh_id, ifmsh->mesh_id_len); 1779 ifmsh->mesh_sp_id = setup->sync_method; 1780 ifmsh->mesh_pp_id = setup->path_sel_proto; 1781 ifmsh->mesh_pm_id = setup->path_metric; 1782 ifmsh->user_mpm = setup->user_mpm; 1783 ifmsh->mesh_auth_id = setup->auth_id; 1784 ifmsh->security = IEEE80211_MESH_SEC_NONE; 1785 if (setup->is_authenticated) 1786 ifmsh->security |= IEEE80211_MESH_SEC_AUTHED; 1787 if (setup->is_secure) 1788 ifmsh->security |= IEEE80211_MESH_SEC_SECURED; 1789 1790 /* mcast rate setting in Mesh Node */ 1791 memcpy(sdata->vif.bss_conf.mcast_rate, setup->mcast_rate, 1792 sizeof(setup->mcast_rate)); 1793 sdata->vif.bss_conf.basic_rates = setup->basic_rates; 1794 1795 sdata->vif.bss_conf.beacon_int = setup->beacon_interval; 1796 sdata->vif.bss_conf.dtim_period = setup->dtim_period; 1797 1798 return 0; 1799 } 1800 1801 static int ieee80211_update_mesh_config(struct wiphy *wiphy, 1802 struct net_device *dev, u32 mask, 1803 const struct mesh_config *nconf) 1804 { 1805 struct mesh_config *conf; 1806 struct ieee80211_sub_if_data *sdata; 1807 struct ieee80211_if_mesh *ifmsh; 1808 1809 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1810 ifmsh = &sdata->u.mesh; 1811 1812 /* Set the config options which we are interested in setting */ 1813 conf = &(sdata->u.mesh.mshcfg); 1814 if (_chg_mesh_attr(NL80211_MESHCONF_RETRY_TIMEOUT, mask)) 1815 conf->dot11MeshRetryTimeout = nconf->dot11MeshRetryTimeout; 1816 if (_chg_mesh_attr(NL80211_MESHCONF_CONFIRM_TIMEOUT, mask)) 1817 conf->dot11MeshConfirmTimeout = nconf->dot11MeshConfirmTimeout; 1818 if (_chg_mesh_attr(NL80211_MESHCONF_HOLDING_TIMEOUT, mask)) 1819 conf->dot11MeshHoldingTimeout = nconf->dot11MeshHoldingTimeout; 1820 if (_chg_mesh_attr(NL80211_MESHCONF_MAX_PEER_LINKS, mask)) 1821 conf->dot11MeshMaxPeerLinks = nconf->dot11MeshMaxPeerLinks; 1822 if (_chg_mesh_attr(NL80211_MESHCONF_MAX_RETRIES, mask)) 1823 conf->dot11MeshMaxRetries = nconf->dot11MeshMaxRetries; 1824 if (_chg_mesh_attr(NL80211_MESHCONF_TTL, mask)) 1825 conf->dot11MeshTTL = nconf->dot11MeshTTL; 1826 if (_chg_mesh_attr(NL80211_MESHCONF_ELEMENT_TTL, mask)) 1827 conf->element_ttl = nconf->element_ttl; 1828 if (_chg_mesh_attr(NL80211_MESHCONF_AUTO_OPEN_PLINKS, mask)) { 1829 if (ifmsh->user_mpm) 1830 return -EBUSY; 1831 conf->auto_open_plinks = nconf->auto_open_plinks; 1832 } 1833 if (_chg_mesh_attr(NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR, mask)) 1834 conf->dot11MeshNbrOffsetMaxNeighbor = 1835 nconf->dot11MeshNbrOffsetMaxNeighbor; 1836 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES, mask)) 1837 conf->dot11MeshHWMPmaxPREQretries = 1838 nconf->dot11MeshHWMPmaxPREQretries; 1839 if (_chg_mesh_attr(NL80211_MESHCONF_PATH_REFRESH_TIME, mask)) 1840 conf->path_refresh_time = nconf->path_refresh_time; 1841 if (_chg_mesh_attr(NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT, mask)) 1842 conf->min_discovery_timeout = nconf->min_discovery_timeout; 1843 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT, mask)) 1844 conf->dot11MeshHWMPactivePathTimeout = 1845 nconf->dot11MeshHWMPactivePathTimeout; 1846 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL, mask)) 1847 conf->dot11MeshHWMPpreqMinInterval = 1848 nconf->dot11MeshHWMPpreqMinInterval; 1849 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL, mask)) 1850 conf->dot11MeshHWMPperrMinInterval = 1851 nconf->dot11MeshHWMPperrMinInterval; 1852 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME, 1853 mask)) 1854 conf->dot11MeshHWMPnetDiameterTraversalTime = 1855 nconf->dot11MeshHWMPnetDiameterTraversalTime; 1856 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOTMODE, mask)) { 1857 conf->dot11MeshHWMPRootMode = nconf->dot11MeshHWMPRootMode; 1858 ieee80211_mesh_root_setup(ifmsh); 1859 } 1860 if (_chg_mesh_attr(NL80211_MESHCONF_GATE_ANNOUNCEMENTS, mask)) { 1861 /* our current gate announcement implementation rides on root 1862 * announcements, so require this ifmsh to also be a root node 1863 * */ 1864 if (nconf->dot11MeshGateAnnouncementProtocol && 1865 !(conf->dot11MeshHWMPRootMode > IEEE80211_ROOTMODE_ROOT)) { 1866 conf->dot11MeshHWMPRootMode = IEEE80211_PROACTIVE_RANN; 1867 ieee80211_mesh_root_setup(ifmsh); 1868 } 1869 conf->dot11MeshGateAnnouncementProtocol = 1870 nconf->dot11MeshGateAnnouncementProtocol; 1871 } 1872 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_RANN_INTERVAL, mask)) 1873 conf->dot11MeshHWMPRannInterval = 1874 nconf->dot11MeshHWMPRannInterval; 1875 if (_chg_mesh_attr(NL80211_MESHCONF_FORWARDING, mask)) 1876 conf->dot11MeshForwarding = nconf->dot11MeshForwarding; 1877 if (_chg_mesh_attr(NL80211_MESHCONF_RSSI_THRESHOLD, mask)) { 1878 /* our RSSI threshold implementation is supported only for 1879 * devices that report signal in dBm. 1880 */ 1881 if (!(sdata->local->hw.flags & IEEE80211_HW_SIGNAL_DBM)) 1882 return -ENOTSUPP; 1883 conf->rssi_threshold = nconf->rssi_threshold; 1884 } 1885 if (_chg_mesh_attr(NL80211_MESHCONF_HT_OPMODE, mask)) { 1886 conf->ht_opmode = nconf->ht_opmode; 1887 sdata->vif.bss_conf.ht_operation_mode = nconf->ht_opmode; 1888 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_HT); 1889 } 1890 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT, mask)) 1891 conf->dot11MeshHWMPactivePathToRootTimeout = 1892 nconf->dot11MeshHWMPactivePathToRootTimeout; 1893 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOT_INTERVAL, mask)) 1894 conf->dot11MeshHWMProotInterval = 1895 nconf->dot11MeshHWMProotInterval; 1896 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL, mask)) 1897 conf->dot11MeshHWMPconfirmationInterval = 1898 nconf->dot11MeshHWMPconfirmationInterval; 1899 if (_chg_mesh_attr(NL80211_MESHCONF_POWER_MODE, mask)) { 1900 conf->power_mode = nconf->power_mode; 1901 ieee80211_mps_local_status_update(sdata); 1902 } 1903 if (_chg_mesh_attr(NL80211_MESHCONF_AWAKE_WINDOW, mask)) 1904 conf->dot11MeshAwakeWindowDuration = 1905 nconf->dot11MeshAwakeWindowDuration; 1906 if (_chg_mesh_attr(NL80211_MESHCONF_PLINK_TIMEOUT, mask)) 1907 conf->plink_timeout = nconf->plink_timeout; 1908 ieee80211_mbss_info_change_notify(sdata, BSS_CHANGED_BEACON); 1909 return 0; 1910 } 1911 1912 static int ieee80211_join_mesh(struct wiphy *wiphy, struct net_device *dev, 1913 const struct mesh_config *conf, 1914 const struct mesh_setup *setup) 1915 { 1916 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1917 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh; 1918 int err; 1919 1920 memcpy(&ifmsh->mshcfg, conf, sizeof(struct mesh_config)); 1921 err = copy_mesh_setup(ifmsh, setup); 1922 if (err) 1923 return err; 1924 1925 /* can mesh use other SMPS modes? */ 1926 sdata->smps_mode = IEEE80211_SMPS_OFF; 1927 sdata->needed_rx_chains = sdata->local->rx_chains; 1928 1929 err = ieee80211_vif_use_channel(sdata, &setup->chandef, 1930 IEEE80211_CHANCTX_SHARED); 1931 if (err) 1932 return err; 1933 1934 return ieee80211_start_mesh(sdata); 1935 } 1936 1937 static int ieee80211_leave_mesh(struct wiphy *wiphy, struct net_device *dev) 1938 { 1939 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1940 1941 ieee80211_stop_mesh(sdata); 1942 ieee80211_vif_release_channel(sdata); 1943 1944 return 0; 1945 } 1946 #endif 1947 1948 static int ieee80211_change_bss(struct wiphy *wiphy, 1949 struct net_device *dev, 1950 struct bss_parameters *params) 1951 { 1952 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1953 enum ieee80211_band band; 1954 u32 changed = 0; 1955 1956 if (!rtnl_dereference(sdata->u.ap.beacon)) 1957 return -ENOENT; 1958 1959 band = ieee80211_get_sdata_band(sdata); 1960 1961 if (params->use_cts_prot >= 0) { 1962 sdata->vif.bss_conf.use_cts_prot = params->use_cts_prot; 1963 changed |= BSS_CHANGED_ERP_CTS_PROT; 1964 } 1965 if (params->use_short_preamble >= 0) { 1966 sdata->vif.bss_conf.use_short_preamble = 1967 params->use_short_preamble; 1968 changed |= BSS_CHANGED_ERP_PREAMBLE; 1969 } 1970 1971 if (!sdata->vif.bss_conf.use_short_slot && 1972 band == IEEE80211_BAND_5GHZ) { 1973 sdata->vif.bss_conf.use_short_slot = true; 1974 changed |= BSS_CHANGED_ERP_SLOT; 1975 } 1976 1977 if (params->use_short_slot_time >= 0) { 1978 sdata->vif.bss_conf.use_short_slot = 1979 params->use_short_slot_time; 1980 changed |= BSS_CHANGED_ERP_SLOT; 1981 } 1982 1983 if (params->basic_rates) { 1984 ieee80211_parse_bitrates(&sdata->vif.bss_conf.chandef, 1985 wiphy->bands[band], 1986 params->basic_rates, 1987 params->basic_rates_len, 1988 &sdata->vif.bss_conf.basic_rates); 1989 changed |= BSS_CHANGED_BASIC_RATES; 1990 } 1991 1992 if (params->ap_isolate >= 0) { 1993 if (params->ap_isolate) 1994 sdata->flags |= IEEE80211_SDATA_DONT_BRIDGE_PACKETS; 1995 else 1996 sdata->flags &= ~IEEE80211_SDATA_DONT_BRIDGE_PACKETS; 1997 } 1998 1999 if (params->ht_opmode >= 0) { 2000 sdata->vif.bss_conf.ht_operation_mode = 2001 (u16) params->ht_opmode; 2002 changed |= BSS_CHANGED_HT; 2003 } 2004 2005 if (params->p2p_ctwindow >= 0) { 2006 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow &= 2007 ~IEEE80211_P2P_OPPPS_CTWINDOW_MASK; 2008 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |= 2009 params->p2p_ctwindow & IEEE80211_P2P_OPPPS_CTWINDOW_MASK; 2010 changed |= BSS_CHANGED_P2P_PS; 2011 } 2012 2013 if (params->p2p_opp_ps > 0) { 2014 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |= 2015 IEEE80211_P2P_OPPPS_ENABLE_BIT; 2016 changed |= BSS_CHANGED_P2P_PS; 2017 } else if (params->p2p_opp_ps == 0) { 2018 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow &= 2019 ~IEEE80211_P2P_OPPPS_ENABLE_BIT; 2020 changed |= BSS_CHANGED_P2P_PS; 2021 } 2022 2023 ieee80211_bss_info_change_notify(sdata, changed); 2024 2025 return 0; 2026 } 2027 2028 static int ieee80211_set_txq_params(struct wiphy *wiphy, 2029 struct net_device *dev, 2030 struct ieee80211_txq_params *params) 2031 { 2032 struct ieee80211_local *local = wiphy_priv(wiphy); 2033 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2034 struct ieee80211_tx_queue_params p; 2035 2036 if (!local->ops->conf_tx) 2037 return -EOPNOTSUPP; 2038 2039 if (local->hw.queues < IEEE80211_NUM_ACS) 2040 return -EOPNOTSUPP; 2041 2042 memset(&p, 0, sizeof(p)); 2043 p.aifs = params->aifs; 2044 p.cw_max = params->cwmax; 2045 p.cw_min = params->cwmin; 2046 p.txop = params->txop; 2047 2048 /* 2049 * Setting tx queue params disables u-apsd because it's only 2050 * called in master mode. 2051 */ 2052 p.uapsd = false; 2053 2054 sdata->tx_conf[params->ac] = p; 2055 if (drv_conf_tx(local, sdata, params->ac, &p)) { 2056 wiphy_debug(local->hw.wiphy, 2057 "failed to set TX queue parameters for AC %d\n", 2058 params->ac); 2059 return -EINVAL; 2060 } 2061 2062 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_QOS); 2063 2064 return 0; 2065 } 2066 2067 #ifdef CONFIG_PM 2068 static int ieee80211_suspend(struct wiphy *wiphy, 2069 struct cfg80211_wowlan *wowlan) 2070 { 2071 return __ieee80211_suspend(wiphy_priv(wiphy), wowlan); 2072 } 2073 2074 static int ieee80211_resume(struct wiphy *wiphy) 2075 { 2076 return __ieee80211_resume(wiphy_priv(wiphy)); 2077 } 2078 #else 2079 #define ieee80211_suspend NULL 2080 #define ieee80211_resume NULL 2081 #endif 2082 2083 static int ieee80211_scan(struct wiphy *wiphy, 2084 struct cfg80211_scan_request *req) 2085 { 2086 struct ieee80211_sub_if_data *sdata; 2087 2088 sdata = IEEE80211_WDEV_TO_SUB_IF(req->wdev); 2089 2090 switch (ieee80211_vif_type_p2p(&sdata->vif)) { 2091 case NL80211_IFTYPE_STATION: 2092 case NL80211_IFTYPE_ADHOC: 2093 case NL80211_IFTYPE_MESH_POINT: 2094 case NL80211_IFTYPE_P2P_CLIENT: 2095 case NL80211_IFTYPE_P2P_DEVICE: 2096 break; 2097 case NL80211_IFTYPE_P2P_GO: 2098 if (sdata->local->ops->hw_scan) 2099 break; 2100 /* 2101 * FIXME: implement NoA while scanning in software, 2102 * for now fall through to allow scanning only when 2103 * beaconing hasn't been configured yet 2104 */ 2105 case NL80211_IFTYPE_AP: 2106 /* 2107 * If the scan has been forced (and the driver supports 2108 * forcing), don't care about being beaconing already. 2109 * This will create problems to the attached stations (e.g. all 2110 * the frames sent while scanning on other channel will be 2111 * lost) 2112 */ 2113 if (sdata->u.ap.beacon && 2114 (!(wiphy->features & NL80211_FEATURE_AP_SCAN) || 2115 !(req->flags & NL80211_SCAN_FLAG_AP))) 2116 return -EOPNOTSUPP; 2117 break; 2118 default: 2119 return -EOPNOTSUPP; 2120 } 2121 2122 return ieee80211_request_scan(sdata, req); 2123 } 2124 2125 static int 2126 ieee80211_sched_scan_start(struct wiphy *wiphy, 2127 struct net_device *dev, 2128 struct cfg80211_sched_scan_request *req) 2129 { 2130 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2131 2132 if (!sdata->local->ops->sched_scan_start) 2133 return -EOPNOTSUPP; 2134 2135 return ieee80211_request_sched_scan_start(sdata, req); 2136 } 2137 2138 static int 2139 ieee80211_sched_scan_stop(struct wiphy *wiphy, struct net_device *dev) 2140 { 2141 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2142 2143 if (!sdata->local->ops->sched_scan_stop) 2144 return -EOPNOTSUPP; 2145 2146 return ieee80211_request_sched_scan_stop(sdata); 2147 } 2148 2149 static int ieee80211_auth(struct wiphy *wiphy, struct net_device *dev, 2150 struct cfg80211_auth_request *req) 2151 { 2152 return ieee80211_mgd_auth(IEEE80211_DEV_TO_SUB_IF(dev), req); 2153 } 2154 2155 static int ieee80211_assoc(struct wiphy *wiphy, struct net_device *dev, 2156 struct cfg80211_assoc_request *req) 2157 { 2158 return ieee80211_mgd_assoc(IEEE80211_DEV_TO_SUB_IF(dev), req); 2159 } 2160 2161 static int ieee80211_deauth(struct wiphy *wiphy, struct net_device *dev, 2162 struct cfg80211_deauth_request *req) 2163 { 2164 return ieee80211_mgd_deauth(IEEE80211_DEV_TO_SUB_IF(dev), req); 2165 } 2166 2167 static int ieee80211_disassoc(struct wiphy *wiphy, struct net_device *dev, 2168 struct cfg80211_disassoc_request *req) 2169 { 2170 return ieee80211_mgd_disassoc(IEEE80211_DEV_TO_SUB_IF(dev), req); 2171 } 2172 2173 static int ieee80211_join_ibss(struct wiphy *wiphy, struct net_device *dev, 2174 struct cfg80211_ibss_params *params) 2175 { 2176 return ieee80211_ibss_join(IEEE80211_DEV_TO_SUB_IF(dev), params); 2177 } 2178 2179 static int ieee80211_leave_ibss(struct wiphy *wiphy, struct net_device *dev) 2180 { 2181 return ieee80211_ibss_leave(IEEE80211_DEV_TO_SUB_IF(dev)); 2182 } 2183 2184 static int ieee80211_set_mcast_rate(struct wiphy *wiphy, struct net_device *dev, 2185 int rate[IEEE80211_NUM_BANDS]) 2186 { 2187 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2188 2189 memcpy(sdata->vif.bss_conf.mcast_rate, rate, 2190 sizeof(int) * IEEE80211_NUM_BANDS); 2191 2192 return 0; 2193 } 2194 2195 static int ieee80211_set_wiphy_params(struct wiphy *wiphy, u32 changed) 2196 { 2197 struct ieee80211_local *local = wiphy_priv(wiphy); 2198 int err; 2199 2200 if (changed & WIPHY_PARAM_FRAG_THRESHOLD) { 2201 err = drv_set_frag_threshold(local, wiphy->frag_threshold); 2202 2203 if (err) 2204 return err; 2205 } 2206 2207 if (changed & WIPHY_PARAM_COVERAGE_CLASS) { 2208 err = drv_set_coverage_class(local, wiphy->coverage_class); 2209 2210 if (err) 2211 return err; 2212 } 2213 2214 if (changed & WIPHY_PARAM_RTS_THRESHOLD) { 2215 err = drv_set_rts_threshold(local, wiphy->rts_threshold); 2216 2217 if (err) 2218 return err; 2219 } 2220 2221 if (changed & WIPHY_PARAM_RETRY_SHORT) { 2222 if (wiphy->retry_short > IEEE80211_MAX_TX_RETRY) 2223 return -EINVAL; 2224 local->hw.conf.short_frame_max_tx_count = wiphy->retry_short; 2225 } 2226 if (changed & WIPHY_PARAM_RETRY_LONG) { 2227 if (wiphy->retry_long > IEEE80211_MAX_TX_RETRY) 2228 return -EINVAL; 2229 local->hw.conf.long_frame_max_tx_count = wiphy->retry_long; 2230 } 2231 if (changed & 2232 (WIPHY_PARAM_RETRY_SHORT | WIPHY_PARAM_RETRY_LONG)) 2233 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_RETRY_LIMITS); 2234 2235 return 0; 2236 } 2237 2238 static int ieee80211_set_tx_power(struct wiphy *wiphy, 2239 struct wireless_dev *wdev, 2240 enum nl80211_tx_power_setting type, int mbm) 2241 { 2242 struct ieee80211_local *local = wiphy_priv(wiphy); 2243 struct ieee80211_sub_if_data *sdata; 2244 2245 if (wdev) { 2246 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 2247 2248 switch (type) { 2249 case NL80211_TX_POWER_AUTOMATIC: 2250 sdata->user_power_level = IEEE80211_UNSET_POWER_LEVEL; 2251 break; 2252 case NL80211_TX_POWER_LIMITED: 2253 case NL80211_TX_POWER_FIXED: 2254 if (mbm < 0 || (mbm % 100)) 2255 return -EOPNOTSUPP; 2256 sdata->user_power_level = MBM_TO_DBM(mbm); 2257 break; 2258 } 2259 2260 ieee80211_recalc_txpower(sdata); 2261 2262 return 0; 2263 } 2264 2265 switch (type) { 2266 case NL80211_TX_POWER_AUTOMATIC: 2267 local->user_power_level = IEEE80211_UNSET_POWER_LEVEL; 2268 break; 2269 case NL80211_TX_POWER_LIMITED: 2270 case NL80211_TX_POWER_FIXED: 2271 if (mbm < 0 || (mbm % 100)) 2272 return -EOPNOTSUPP; 2273 local->user_power_level = MBM_TO_DBM(mbm); 2274 break; 2275 } 2276 2277 mutex_lock(&local->iflist_mtx); 2278 list_for_each_entry(sdata, &local->interfaces, list) 2279 sdata->user_power_level = local->user_power_level; 2280 list_for_each_entry(sdata, &local->interfaces, list) 2281 ieee80211_recalc_txpower(sdata); 2282 mutex_unlock(&local->iflist_mtx); 2283 2284 return 0; 2285 } 2286 2287 static int ieee80211_get_tx_power(struct wiphy *wiphy, 2288 struct wireless_dev *wdev, 2289 int *dbm) 2290 { 2291 struct ieee80211_local *local = wiphy_priv(wiphy); 2292 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 2293 2294 if (!local->use_chanctx) 2295 *dbm = local->hw.conf.power_level; 2296 else 2297 *dbm = sdata->vif.bss_conf.txpower; 2298 2299 return 0; 2300 } 2301 2302 static int ieee80211_set_wds_peer(struct wiphy *wiphy, struct net_device *dev, 2303 const u8 *addr) 2304 { 2305 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2306 2307 memcpy(&sdata->u.wds.remote_addr, addr, ETH_ALEN); 2308 2309 return 0; 2310 } 2311 2312 static void ieee80211_rfkill_poll(struct wiphy *wiphy) 2313 { 2314 struct ieee80211_local *local = wiphy_priv(wiphy); 2315 2316 drv_rfkill_poll(local); 2317 } 2318 2319 #ifdef CONFIG_NL80211_TESTMODE 2320 static int ieee80211_testmode_cmd(struct wiphy *wiphy, 2321 struct wireless_dev *wdev, 2322 void *data, int len) 2323 { 2324 struct ieee80211_local *local = wiphy_priv(wiphy); 2325 struct ieee80211_vif *vif = NULL; 2326 2327 if (!local->ops->testmode_cmd) 2328 return -EOPNOTSUPP; 2329 2330 if (wdev) { 2331 struct ieee80211_sub_if_data *sdata; 2332 2333 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 2334 if (sdata->flags & IEEE80211_SDATA_IN_DRIVER) 2335 vif = &sdata->vif; 2336 } 2337 2338 return local->ops->testmode_cmd(&local->hw, vif, data, len); 2339 } 2340 2341 static int ieee80211_testmode_dump(struct wiphy *wiphy, 2342 struct sk_buff *skb, 2343 struct netlink_callback *cb, 2344 void *data, int len) 2345 { 2346 struct ieee80211_local *local = wiphy_priv(wiphy); 2347 2348 if (!local->ops->testmode_dump) 2349 return -EOPNOTSUPP; 2350 2351 return local->ops->testmode_dump(&local->hw, skb, cb, data, len); 2352 } 2353 #endif 2354 2355 int __ieee80211_request_smps_ap(struct ieee80211_sub_if_data *sdata, 2356 enum ieee80211_smps_mode smps_mode) 2357 { 2358 struct sta_info *sta; 2359 enum ieee80211_smps_mode old_req; 2360 int i; 2361 2362 if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_AP)) 2363 return -EINVAL; 2364 2365 if (sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_20_NOHT) 2366 return 0; 2367 2368 old_req = sdata->u.ap.req_smps; 2369 sdata->u.ap.req_smps = smps_mode; 2370 2371 /* AUTOMATIC doesn't mean much for AP - don't allow it */ 2372 if (old_req == smps_mode || 2373 smps_mode == IEEE80211_SMPS_AUTOMATIC) 2374 return 0; 2375 2376 /* If no associated stations, there's no need to do anything */ 2377 if (!atomic_read(&sdata->u.ap.num_mcast_sta)) { 2378 sdata->smps_mode = smps_mode; 2379 ieee80211_queue_work(&sdata->local->hw, &sdata->recalc_smps); 2380 return 0; 2381 } 2382 2383 ht_dbg(sdata, 2384 "SMSP %d requested in AP mode, sending Action frame to %d stations\n", 2385 smps_mode, atomic_read(&sdata->u.ap.num_mcast_sta)); 2386 2387 mutex_lock(&sdata->local->sta_mtx); 2388 for (i = 0; i < STA_HASH_SIZE; i++) { 2389 for (sta = rcu_dereference_protected(sdata->local->sta_hash[i], 2390 lockdep_is_held(&sdata->local->sta_mtx)); 2391 sta; 2392 sta = rcu_dereference_protected(sta->hnext, 2393 lockdep_is_held(&sdata->local->sta_mtx))) { 2394 /* 2395 * Only stations associated to our AP and 2396 * associated VLANs 2397 */ 2398 if (sta->sdata->bss != &sdata->u.ap) 2399 continue; 2400 2401 /* This station doesn't support MIMO - skip it */ 2402 if (sta_info_tx_streams(sta) == 1) 2403 continue; 2404 2405 /* 2406 * Don't wake up a STA just to send the action frame 2407 * unless we are getting more restrictive. 2408 */ 2409 if (test_sta_flag(sta, WLAN_STA_PS_STA) && 2410 !ieee80211_smps_is_restrictive(sta->known_smps_mode, 2411 smps_mode)) { 2412 ht_dbg(sdata, 2413 "Won't send SMPS to sleeping STA %pM\n", 2414 sta->sta.addr); 2415 continue; 2416 } 2417 2418 /* 2419 * If the STA is not authorized, wait until it gets 2420 * authorized and the action frame will be sent then. 2421 */ 2422 if (!test_sta_flag(sta, WLAN_STA_AUTHORIZED)) 2423 continue; 2424 2425 ht_dbg(sdata, "Sending SMPS to %pM\n", sta->sta.addr); 2426 ieee80211_send_smps_action(sdata, smps_mode, 2427 sta->sta.addr, 2428 sdata->vif.bss_conf.bssid); 2429 } 2430 } 2431 mutex_unlock(&sdata->local->sta_mtx); 2432 2433 sdata->smps_mode = smps_mode; 2434 ieee80211_queue_work(&sdata->local->hw, &sdata->recalc_smps); 2435 2436 return 0; 2437 } 2438 2439 int __ieee80211_request_smps_mgd(struct ieee80211_sub_if_data *sdata, 2440 enum ieee80211_smps_mode smps_mode) 2441 { 2442 const u8 *ap; 2443 enum ieee80211_smps_mode old_req; 2444 int err; 2445 2446 lockdep_assert_held(&sdata->wdev.mtx); 2447 2448 if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_STATION)) 2449 return -EINVAL; 2450 2451 old_req = sdata->u.mgd.req_smps; 2452 sdata->u.mgd.req_smps = smps_mode; 2453 2454 if (old_req == smps_mode && 2455 smps_mode != IEEE80211_SMPS_AUTOMATIC) 2456 return 0; 2457 2458 /* 2459 * If not associated, or current association is not an HT 2460 * association, there's no need to do anything, just store 2461 * the new value until we associate. 2462 */ 2463 if (!sdata->u.mgd.associated || 2464 sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_20_NOHT) 2465 return 0; 2466 2467 ap = sdata->u.mgd.associated->bssid; 2468 2469 if (smps_mode == IEEE80211_SMPS_AUTOMATIC) { 2470 if (sdata->u.mgd.powersave) 2471 smps_mode = IEEE80211_SMPS_DYNAMIC; 2472 else 2473 smps_mode = IEEE80211_SMPS_OFF; 2474 } 2475 2476 /* send SM PS frame to AP */ 2477 err = ieee80211_send_smps_action(sdata, smps_mode, 2478 ap, ap); 2479 if (err) 2480 sdata->u.mgd.req_smps = old_req; 2481 2482 return err; 2483 } 2484 2485 static int ieee80211_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev, 2486 bool enabled, int timeout) 2487 { 2488 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2489 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); 2490 2491 if (sdata->vif.type != NL80211_IFTYPE_STATION && 2492 sdata->vif.type != NL80211_IFTYPE_MESH_POINT) 2493 return -EOPNOTSUPP; 2494 2495 if (!(local->hw.flags & IEEE80211_HW_SUPPORTS_PS)) 2496 return -EOPNOTSUPP; 2497 2498 if (enabled == sdata->u.mgd.powersave && 2499 timeout == local->dynamic_ps_forced_timeout) 2500 return 0; 2501 2502 sdata->u.mgd.powersave = enabled; 2503 local->dynamic_ps_forced_timeout = timeout; 2504 2505 /* no change, but if automatic follow powersave */ 2506 sdata_lock(sdata); 2507 __ieee80211_request_smps_mgd(sdata, sdata->u.mgd.req_smps); 2508 sdata_unlock(sdata); 2509 2510 if (local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_PS) 2511 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS); 2512 2513 ieee80211_recalc_ps(local, -1); 2514 ieee80211_recalc_ps_vif(sdata); 2515 2516 return 0; 2517 } 2518 2519 static int ieee80211_set_cqm_rssi_config(struct wiphy *wiphy, 2520 struct net_device *dev, 2521 s32 rssi_thold, u32 rssi_hyst) 2522 { 2523 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2524 struct ieee80211_vif *vif = &sdata->vif; 2525 struct ieee80211_bss_conf *bss_conf = &vif->bss_conf; 2526 2527 if (rssi_thold == bss_conf->cqm_rssi_thold && 2528 rssi_hyst == bss_conf->cqm_rssi_hyst) 2529 return 0; 2530 2531 bss_conf->cqm_rssi_thold = rssi_thold; 2532 bss_conf->cqm_rssi_hyst = rssi_hyst; 2533 2534 /* tell the driver upon association, unless already associated */ 2535 if (sdata->u.mgd.associated && 2536 sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI) 2537 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_CQM); 2538 2539 return 0; 2540 } 2541 2542 static int ieee80211_set_bitrate_mask(struct wiphy *wiphy, 2543 struct net_device *dev, 2544 const u8 *addr, 2545 const struct cfg80211_bitrate_mask *mask) 2546 { 2547 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2548 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); 2549 int i, ret; 2550 2551 if (!ieee80211_sdata_running(sdata)) 2552 return -ENETDOWN; 2553 2554 if (local->hw.flags & IEEE80211_HW_HAS_RATE_CONTROL) { 2555 ret = drv_set_bitrate_mask(local, sdata, mask); 2556 if (ret) 2557 return ret; 2558 } 2559 2560 for (i = 0; i < IEEE80211_NUM_BANDS; i++) { 2561 struct ieee80211_supported_band *sband = wiphy->bands[i]; 2562 int j; 2563 2564 sdata->rc_rateidx_mask[i] = mask->control[i].legacy; 2565 memcpy(sdata->rc_rateidx_mcs_mask[i], mask->control[i].mcs, 2566 sizeof(mask->control[i].mcs)); 2567 2568 sdata->rc_has_mcs_mask[i] = false; 2569 if (!sband) 2570 continue; 2571 2572 for (j = 0; j < IEEE80211_HT_MCS_MASK_LEN; j++) 2573 if (~sdata->rc_rateidx_mcs_mask[i][j]) { 2574 sdata->rc_has_mcs_mask[i] = true; 2575 break; 2576 } 2577 } 2578 2579 return 0; 2580 } 2581 2582 static int ieee80211_start_roc_work(struct ieee80211_local *local, 2583 struct ieee80211_sub_if_data *sdata, 2584 struct ieee80211_channel *channel, 2585 unsigned int duration, u64 *cookie, 2586 struct sk_buff *txskb, 2587 enum ieee80211_roc_type type) 2588 { 2589 struct ieee80211_roc_work *roc, *tmp; 2590 bool queued = false; 2591 int ret; 2592 2593 lockdep_assert_held(&local->mtx); 2594 2595 if (local->use_chanctx && !local->ops->remain_on_channel) 2596 return -EOPNOTSUPP; 2597 2598 roc = kzalloc(sizeof(*roc), GFP_KERNEL); 2599 if (!roc) 2600 return -ENOMEM; 2601 2602 roc->chan = channel; 2603 roc->duration = duration; 2604 roc->req_duration = duration; 2605 roc->frame = txskb; 2606 roc->type = type; 2607 roc->mgmt_tx_cookie = (unsigned long)txskb; 2608 roc->sdata = sdata; 2609 INIT_DELAYED_WORK(&roc->work, ieee80211_sw_roc_work); 2610 INIT_LIST_HEAD(&roc->dependents); 2611 2612 /* if there's one pending or we're scanning, queue this one */ 2613 if (!list_empty(&local->roc_list) || 2614 local->scanning || local->radar_detect_enabled) 2615 goto out_check_combine; 2616 2617 /* if not HW assist, just queue & schedule work */ 2618 if (!local->ops->remain_on_channel) { 2619 ieee80211_queue_delayed_work(&local->hw, &roc->work, 0); 2620 goto out_queue; 2621 } 2622 2623 /* otherwise actually kick it off here (for error handling) */ 2624 2625 /* 2626 * If the duration is zero, then the driver 2627 * wouldn't actually do anything. Set it to 2628 * 10 for now. 2629 * 2630 * TODO: cancel the off-channel operation 2631 * when we get the SKB's TX status and 2632 * the wait time was zero before. 2633 */ 2634 if (!duration) 2635 duration = 10; 2636 2637 ret = drv_remain_on_channel(local, sdata, channel, duration, type); 2638 if (ret) { 2639 kfree(roc); 2640 return ret; 2641 } 2642 2643 roc->started = true; 2644 goto out_queue; 2645 2646 out_check_combine: 2647 list_for_each_entry(tmp, &local->roc_list, list) { 2648 if (tmp->chan != channel || tmp->sdata != sdata) 2649 continue; 2650 2651 /* 2652 * Extend this ROC if possible: 2653 * 2654 * If it hasn't started yet, just increase the duration 2655 * and add the new one to the list of dependents. 2656 * If the type of the new ROC has higher priority, modify the 2657 * type of the previous one to match that of the new one. 2658 */ 2659 if (!tmp->started) { 2660 list_add_tail(&roc->list, &tmp->dependents); 2661 tmp->duration = max(tmp->duration, roc->duration); 2662 tmp->type = max(tmp->type, roc->type); 2663 queued = true; 2664 break; 2665 } 2666 2667 /* If it has already started, it's more difficult ... */ 2668 if (local->ops->remain_on_channel) { 2669 unsigned long j = jiffies; 2670 2671 /* 2672 * In the offloaded ROC case, if it hasn't begun, add 2673 * this new one to the dependent list to be handled 2674 * when the master one begins. If it has begun, 2675 * check that there's still a minimum time left and 2676 * if so, start this one, transmitting the frame, but 2677 * add it to the list directly after this one with 2678 * a reduced time so we'll ask the driver to execute 2679 * it right after finishing the previous one, in the 2680 * hope that it'll also be executed right afterwards, 2681 * effectively extending the old one. 2682 * If there's no minimum time left, just add it to the 2683 * normal list. 2684 * TODO: the ROC type is ignored here, assuming that it 2685 * is better to immediately use the current ROC. 2686 */ 2687 if (!tmp->hw_begun) { 2688 list_add_tail(&roc->list, &tmp->dependents); 2689 queued = true; 2690 break; 2691 } 2692 2693 if (time_before(j + IEEE80211_ROC_MIN_LEFT, 2694 tmp->hw_start_time + 2695 msecs_to_jiffies(tmp->duration))) { 2696 int new_dur; 2697 2698 ieee80211_handle_roc_started(roc); 2699 2700 new_dur = roc->duration - 2701 jiffies_to_msecs(tmp->hw_start_time + 2702 msecs_to_jiffies( 2703 tmp->duration) - 2704 j); 2705 2706 if (new_dur > 0) { 2707 /* add right after tmp */ 2708 list_add(&roc->list, &tmp->list); 2709 } else { 2710 list_add_tail(&roc->list, 2711 &tmp->dependents); 2712 } 2713 queued = true; 2714 } 2715 } else if (del_timer_sync(&tmp->work.timer)) { 2716 unsigned long new_end; 2717 2718 /* 2719 * In the software ROC case, cancel the timer, if 2720 * that fails then the finish work is already 2721 * queued/pending and thus we queue the new ROC 2722 * normally, if that succeeds then we can extend 2723 * the timer duration and TX the frame (if any.) 2724 */ 2725 2726 list_add_tail(&roc->list, &tmp->dependents); 2727 queued = true; 2728 2729 new_end = jiffies + msecs_to_jiffies(roc->duration); 2730 2731 /* ok, it was started & we canceled timer */ 2732 if (time_after(new_end, tmp->work.timer.expires)) 2733 mod_timer(&tmp->work.timer, new_end); 2734 else 2735 add_timer(&tmp->work.timer); 2736 2737 ieee80211_handle_roc_started(roc); 2738 } 2739 break; 2740 } 2741 2742 out_queue: 2743 if (!queued) 2744 list_add_tail(&roc->list, &local->roc_list); 2745 2746 /* 2747 * cookie is either the roc cookie (for normal roc) 2748 * or the SKB (for mgmt TX) 2749 */ 2750 if (!txskb) { 2751 /* local->mtx protects this */ 2752 local->roc_cookie_counter++; 2753 roc->cookie = local->roc_cookie_counter; 2754 /* wow, you wrapped 64 bits ... more likely a bug */ 2755 if (WARN_ON(roc->cookie == 0)) { 2756 roc->cookie = 1; 2757 local->roc_cookie_counter++; 2758 } 2759 *cookie = roc->cookie; 2760 } else { 2761 *cookie = (unsigned long)txskb; 2762 } 2763 2764 return 0; 2765 } 2766 2767 static int ieee80211_remain_on_channel(struct wiphy *wiphy, 2768 struct wireless_dev *wdev, 2769 struct ieee80211_channel *chan, 2770 unsigned int duration, 2771 u64 *cookie) 2772 { 2773 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 2774 struct ieee80211_local *local = sdata->local; 2775 int ret; 2776 2777 mutex_lock(&local->mtx); 2778 ret = ieee80211_start_roc_work(local, sdata, chan, 2779 duration, cookie, NULL, 2780 IEEE80211_ROC_TYPE_NORMAL); 2781 mutex_unlock(&local->mtx); 2782 2783 return ret; 2784 } 2785 2786 static int ieee80211_cancel_roc(struct ieee80211_local *local, 2787 u64 cookie, bool mgmt_tx) 2788 { 2789 struct ieee80211_roc_work *roc, *tmp, *found = NULL; 2790 int ret; 2791 2792 mutex_lock(&local->mtx); 2793 list_for_each_entry_safe(roc, tmp, &local->roc_list, list) { 2794 struct ieee80211_roc_work *dep, *tmp2; 2795 2796 list_for_each_entry_safe(dep, tmp2, &roc->dependents, list) { 2797 if (!mgmt_tx && dep->cookie != cookie) 2798 continue; 2799 else if (mgmt_tx && dep->mgmt_tx_cookie != cookie) 2800 continue; 2801 /* found dependent item -- just remove it */ 2802 list_del(&dep->list); 2803 mutex_unlock(&local->mtx); 2804 2805 ieee80211_roc_notify_destroy(dep, true); 2806 return 0; 2807 } 2808 2809 if (!mgmt_tx && roc->cookie != cookie) 2810 continue; 2811 else if (mgmt_tx && roc->mgmt_tx_cookie != cookie) 2812 continue; 2813 2814 found = roc; 2815 break; 2816 } 2817 2818 if (!found) { 2819 mutex_unlock(&local->mtx); 2820 return -ENOENT; 2821 } 2822 2823 /* 2824 * We found the item to cancel, so do that. Note that it 2825 * may have dependents, which we also cancel (and send 2826 * the expired signal for.) Not doing so would be quite 2827 * tricky here, but we may need to fix it later. 2828 */ 2829 2830 if (local->ops->remain_on_channel) { 2831 if (found->started) { 2832 ret = drv_cancel_remain_on_channel(local); 2833 if (WARN_ON_ONCE(ret)) { 2834 mutex_unlock(&local->mtx); 2835 return ret; 2836 } 2837 } 2838 2839 list_del(&found->list); 2840 2841 if (found->started) 2842 ieee80211_start_next_roc(local); 2843 mutex_unlock(&local->mtx); 2844 2845 ieee80211_roc_notify_destroy(found, true); 2846 } else { 2847 /* work may be pending so use it all the time */ 2848 found->abort = true; 2849 ieee80211_queue_delayed_work(&local->hw, &found->work, 0); 2850 2851 mutex_unlock(&local->mtx); 2852 2853 /* work will clean up etc */ 2854 flush_delayed_work(&found->work); 2855 WARN_ON(!found->to_be_freed); 2856 kfree(found); 2857 } 2858 2859 return 0; 2860 } 2861 2862 static int ieee80211_cancel_remain_on_channel(struct wiphy *wiphy, 2863 struct wireless_dev *wdev, 2864 u64 cookie) 2865 { 2866 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 2867 struct ieee80211_local *local = sdata->local; 2868 2869 return ieee80211_cancel_roc(local, cookie, false); 2870 } 2871 2872 static int ieee80211_start_radar_detection(struct wiphy *wiphy, 2873 struct net_device *dev, 2874 struct cfg80211_chan_def *chandef) 2875 { 2876 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2877 struct ieee80211_local *local = sdata->local; 2878 unsigned long timeout; 2879 int err; 2880 2881 if (!list_empty(&local->roc_list) || local->scanning) 2882 return -EBUSY; 2883 2884 /* whatever, but channel contexts should not complain about that one */ 2885 sdata->smps_mode = IEEE80211_SMPS_OFF; 2886 sdata->needed_rx_chains = local->rx_chains; 2887 sdata->radar_required = true; 2888 2889 mutex_lock(&local->iflist_mtx); 2890 err = ieee80211_vif_use_channel(sdata, chandef, 2891 IEEE80211_CHANCTX_SHARED); 2892 mutex_unlock(&local->iflist_mtx); 2893 if (err) 2894 return err; 2895 2896 timeout = msecs_to_jiffies(IEEE80211_DFS_MIN_CAC_TIME_MS); 2897 ieee80211_queue_delayed_work(&sdata->local->hw, 2898 &sdata->dfs_cac_timer_work, timeout); 2899 2900 return 0; 2901 } 2902 2903 static struct cfg80211_beacon_data * 2904 cfg80211_beacon_dup(struct cfg80211_beacon_data *beacon) 2905 { 2906 struct cfg80211_beacon_data *new_beacon; 2907 u8 *pos; 2908 int len; 2909 2910 len = beacon->head_len + beacon->tail_len + beacon->beacon_ies_len + 2911 beacon->proberesp_ies_len + beacon->assocresp_ies_len + 2912 beacon->probe_resp_len; 2913 2914 new_beacon = kzalloc(sizeof(*new_beacon) + len, GFP_KERNEL); 2915 if (!new_beacon) 2916 return NULL; 2917 2918 pos = (u8 *)(new_beacon + 1); 2919 if (beacon->head_len) { 2920 new_beacon->head_len = beacon->head_len; 2921 new_beacon->head = pos; 2922 memcpy(pos, beacon->head, beacon->head_len); 2923 pos += beacon->head_len; 2924 } 2925 if (beacon->tail_len) { 2926 new_beacon->tail_len = beacon->tail_len; 2927 new_beacon->tail = pos; 2928 memcpy(pos, beacon->tail, beacon->tail_len); 2929 pos += beacon->tail_len; 2930 } 2931 if (beacon->beacon_ies_len) { 2932 new_beacon->beacon_ies_len = beacon->beacon_ies_len; 2933 new_beacon->beacon_ies = pos; 2934 memcpy(pos, beacon->beacon_ies, beacon->beacon_ies_len); 2935 pos += beacon->beacon_ies_len; 2936 } 2937 if (beacon->proberesp_ies_len) { 2938 new_beacon->proberesp_ies_len = beacon->proberesp_ies_len; 2939 new_beacon->proberesp_ies = pos; 2940 memcpy(pos, beacon->proberesp_ies, beacon->proberesp_ies_len); 2941 pos += beacon->proberesp_ies_len; 2942 } 2943 if (beacon->assocresp_ies_len) { 2944 new_beacon->assocresp_ies_len = beacon->assocresp_ies_len; 2945 new_beacon->assocresp_ies = pos; 2946 memcpy(pos, beacon->assocresp_ies, beacon->assocresp_ies_len); 2947 pos += beacon->assocresp_ies_len; 2948 } 2949 if (beacon->probe_resp_len) { 2950 new_beacon->probe_resp_len = beacon->probe_resp_len; 2951 beacon->probe_resp = pos; 2952 memcpy(pos, beacon->probe_resp, beacon->probe_resp_len); 2953 pos += beacon->probe_resp_len; 2954 } 2955 2956 return new_beacon; 2957 } 2958 2959 void ieee80211_csa_finalize_work(struct work_struct *work) 2960 { 2961 struct ieee80211_sub_if_data *sdata = 2962 container_of(work, struct ieee80211_sub_if_data, 2963 csa_finalize_work); 2964 struct ieee80211_local *local = sdata->local; 2965 int err, changed = 0; 2966 2967 if (!ieee80211_sdata_running(sdata)) 2968 return; 2969 2970 sdata->radar_required = sdata->csa_radar_required; 2971 err = ieee80211_vif_change_channel(sdata, &local->csa_chandef, 2972 &changed); 2973 if (WARN_ON(err < 0)) 2974 return; 2975 2976 if (!local->use_chanctx) { 2977 local->_oper_chandef = local->csa_chandef; 2978 ieee80211_hw_config(local, 0); 2979 } 2980 2981 ieee80211_bss_info_change_notify(sdata, changed); 2982 2983 switch (sdata->vif.type) { 2984 case NL80211_IFTYPE_AP: 2985 err = ieee80211_assign_beacon(sdata, sdata->u.ap.next_beacon); 2986 if (err < 0) 2987 return; 2988 changed |= err; 2989 kfree(sdata->u.ap.next_beacon); 2990 sdata->u.ap.next_beacon = NULL; 2991 2992 ieee80211_bss_info_change_notify(sdata, err); 2993 break; 2994 case NL80211_IFTYPE_ADHOC: 2995 ieee80211_ibss_finish_csa(sdata); 2996 break; 2997 #ifdef CONFIG_MAC80211_MESH 2998 case NL80211_IFTYPE_MESH_POINT: 2999 err = ieee80211_mesh_finish_csa(sdata); 3000 if (err < 0) 3001 return; 3002 break; 3003 #endif 3004 default: 3005 WARN_ON(1); 3006 return; 3007 } 3008 sdata->vif.csa_active = false; 3009 3010 ieee80211_wake_queues_by_reason(&sdata->local->hw, 3011 IEEE80211_MAX_QUEUE_MAP, 3012 IEEE80211_QUEUE_STOP_REASON_CSA); 3013 3014 cfg80211_ch_switch_notify(sdata->dev, &local->csa_chandef); 3015 } 3016 3017 static int ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev, 3018 struct cfg80211_csa_settings *params) 3019 { 3020 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 3021 struct ieee80211_local *local = sdata->local; 3022 struct ieee80211_chanctx_conf *chanctx_conf; 3023 struct ieee80211_chanctx *chanctx; 3024 struct ieee80211_if_mesh __maybe_unused *ifmsh; 3025 int err, num_chanctx; 3026 3027 if (!list_empty(&local->roc_list) || local->scanning) 3028 return -EBUSY; 3029 3030 if (sdata->wdev.cac_started) 3031 return -EBUSY; 3032 3033 if (cfg80211_chandef_identical(¶ms->chandef, 3034 &sdata->vif.bss_conf.chandef)) 3035 return -EINVAL; 3036 3037 rcu_read_lock(); 3038 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); 3039 if (!chanctx_conf) { 3040 rcu_read_unlock(); 3041 return -EBUSY; 3042 } 3043 3044 /* don't handle for multi-VIF cases */ 3045 chanctx = container_of(chanctx_conf, struct ieee80211_chanctx, conf); 3046 if (chanctx->refcount > 1) { 3047 rcu_read_unlock(); 3048 return -EBUSY; 3049 } 3050 num_chanctx = 0; 3051 list_for_each_entry_rcu(chanctx, &local->chanctx_list, list) 3052 num_chanctx++; 3053 rcu_read_unlock(); 3054 3055 if (num_chanctx > 1) 3056 return -EBUSY; 3057 3058 /* don't allow another channel switch if one is already active. */ 3059 if (sdata->vif.csa_active) 3060 return -EBUSY; 3061 3062 switch (sdata->vif.type) { 3063 case NL80211_IFTYPE_AP: 3064 sdata->csa_counter_offset_beacon = 3065 params->counter_offset_beacon; 3066 sdata->csa_counter_offset_presp = params->counter_offset_presp; 3067 sdata->u.ap.next_beacon = 3068 cfg80211_beacon_dup(¶ms->beacon_after); 3069 if (!sdata->u.ap.next_beacon) 3070 return -ENOMEM; 3071 3072 err = ieee80211_assign_beacon(sdata, ¶ms->beacon_csa); 3073 if (err < 0) { 3074 kfree(sdata->u.ap.next_beacon); 3075 return err; 3076 } 3077 break; 3078 case NL80211_IFTYPE_ADHOC: 3079 if (!sdata->vif.bss_conf.ibss_joined) 3080 return -EINVAL; 3081 3082 if (params->chandef.width != sdata->u.ibss.chandef.width) 3083 return -EINVAL; 3084 3085 switch (params->chandef.width) { 3086 case NL80211_CHAN_WIDTH_40: 3087 if (cfg80211_get_chandef_type(¶ms->chandef) != 3088 cfg80211_get_chandef_type(&sdata->u.ibss.chandef)) 3089 return -EINVAL; 3090 case NL80211_CHAN_WIDTH_5: 3091 case NL80211_CHAN_WIDTH_10: 3092 case NL80211_CHAN_WIDTH_20_NOHT: 3093 case NL80211_CHAN_WIDTH_20: 3094 break; 3095 default: 3096 return -EINVAL; 3097 } 3098 3099 /* changes into another band are not supported */ 3100 if (sdata->u.ibss.chandef.chan->band != 3101 params->chandef.chan->band) 3102 return -EINVAL; 3103 3104 err = ieee80211_ibss_csa_beacon(sdata, params); 3105 if (err < 0) 3106 return err; 3107 break; 3108 #ifdef CONFIG_MAC80211_MESH 3109 case NL80211_IFTYPE_MESH_POINT: 3110 ifmsh = &sdata->u.mesh; 3111 3112 if (!ifmsh->mesh_id) 3113 return -EINVAL; 3114 3115 if (params->chandef.width != sdata->vif.bss_conf.chandef.width) 3116 return -EINVAL; 3117 3118 /* changes into another band are not supported */ 3119 if (sdata->vif.bss_conf.chandef.chan->band != 3120 params->chandef.chan->band) 3121 return -EINVAL; 3122 3123 err = ieee80211_mesh_csa_beacon(sdata, params, true); 3124 if (err < 0) 3125 return err; 3126 break; 3127 #endif 3128 default: 3129 return -EOPNOTSUPP; 3130 } 3131 3132 sdata->csa_radar_required = params->radar_required; 3133 3134 if (params->block_tx) 3135 ieee80211_stop_queues_by_reason(&local->hw, 3136 IEEE80211_MAX_QUEUE_MAP, 3137 IEEE80211_QUEUE_STOP_REASON_CSA); 3138 3139 local->csa_chandef = params->chandef; 3140 sdata->vif.csa_active = true; 3141 3142 ieee80211_bss_info_change_notify(sdata, err); 3143 drv_channel_switch_beacon(sdata, ¶ms->chandef); 3144 3145 return 0; 3146 } 3147 3148 static int ieee80211_mgmt_tx(struct wiphy *wiphy, struct wireless_dev *wdev, 3149 struct ieee80211_channel *chan, bool offchan, 3150 unsigned int wait, const u8 *buf, size_t len, 3151 bool no_cck, bool dont_wait_for_ack, u64 *cookie) 3152 { 3153 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 3154 struct ieee80211_local *local = sdata->local; 3155 struct sk_buff *skb; 3156 struct sta_info *sta; 3157 const struct ieee80211_mgmt *mgmt = (void *)buf; 3158 bool need_offchan = false; 3159 u32 flags; 3160 int ret; 3161 3162 if (dont_wait_for_ack) 3163 flags = IEEE80211_TX_CTL_NO_ACK; 3164 else 3165 flags = IEEE80211_TX_INTFL_NL80211_FRAME_TX | 3166 IEEE80211_TX_CTL_REQ_TX_STATUS; 3167 3168 if (no_cck) 3169 flags |= IEEE80211_TX_CTL_NO_CCK_RATE; 3170 3171 switch (sdata->vif.type) { 3172 case NL80211_IFTYPE_ADHOC: 3173 if (!sdata->vif.bss_conf.ibss_joined) 3174 need_offchan = true; 3175 /* fall through */ 3176 #ifdef CONFIG_MAC80211_MESH 3177 case NL80211_IFTYPE_MESH_POINT: 3178 if (ieee80211_vif_is_mesh(&sdata->vif) && 3179 !sdata->u.mesh.mesh_id_len) 3180 need_offchan = true; 3181 /* fall through */ 3182 #endif 3183 case NL80211_IFTYPE_AP: 3184 case NL80211_IFTYPE_AP_VLAN: 3185 case NL80211_IFTYPE_P2P_GO: 3186 if (sdata->vif.type != NL80211_IFTYPE_ADHOC && 3187 !ieee80211_vif_is_mesh(&sdata->vif) && 3188 !rcu_access_pointer(sdata->bss->beacon)) 3189 need_offchan = true; 3190 if (!ieee80211_is_action(mgmt->frame_control) || 3191 mgmt->u.action.category == WLAN_CATEGORY_PUBLIC || 3192 mgmt->u.action.category == WLAN_CATEGORY_SELF_PROTECTED || 3193 mgmt->u.action.category == WLAN_CATEGORY_SPECTRUM_MGMT) 3194 break; 3195 rcu_read_lock(); 3196 sta = sta_info_get(sdata, mgmt->da); 3197 rcu_read_unlock(); 3198 if (!sta) 3199 return -ENOLINK; 3200 break; 3201 case NL80211_IFTYPE_STATION: 3202 case NL80211_IFTYPE_P2P_CLIENT: 3203 if (!sdata->u.mgd.associated) 3204 need_offchan = true; 3205 break; 3206 case NL80211_IFTYPE_P2P_DEVICE: 3207 need_offchan = true; 3208 break; 3209 default: 3210 return -EOPNOTSUPP; 3211 } 3212 3213 /* configurations requiring offchan cannot work if no channel has been 3214 * specified 3215 */ 3216 if (need_offchan && !chan) 3217 return -EINVAL; 3218 3219 mutex_lock(&local->mtx); 3220 3221 /* Check if the operating channel is the requested channel */ 3222 if (!need_offchan) { 3223 struct ieee80211_chanctx_conf *chanctx_conf; 3224 3225 rcu_read_lock(); 3226 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); 3227 3228 if (chanctx_conf) { 3229 need_offchan = chan && (chan != chanctx_conf->def.chan); 3230 } else if (!chan) { 3231 ret = -EINVAL; 3232 rcu_read_unlock(); 3233 goto out_unlock; 3234 } else { 3235 need_offchan = true; 3236 } 3237 rcu_read_unlock(); 3238 } 3239 3240 if (need_offchan && !offchan) { 3241 ret = -EBUSY; 3242 goto out_unlock; 3243 } 3244 3245 skb = dev_alloc_skb(local->hw.extra_tx_headroom + len); 3246 if (!skb) { 3247 ret = -ENOMEM; 3248 goto out_unlock; 3249 } 3250 skb_reserve(skb, local->hw.extra_tx_headroom); 3251 3252 memcpy(skb_put(skb, len), buf, len); 3253 3254 IEEE80211_SKB_CB(skb)->flags = flags; 3255 3256 skb->dev = sdata->dev; 3257 3258 if (!need_offchan) { 3259 *cookie = (unsigned long) skb; 3260 ieee80211_tx_skb(sdata, skb); 3261 ret = 0; 3262 goto out_unlock; 3263 } 3264 3265 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_TX_OFFCHAN | 3266 IEEE80211_TX_INTFL_OFFCHAN_TX_OK; 3267 if (local->hw.flags & IEEE80211_HW_QUEUE_CONTROL) 3268 IEEE80211_SKB_CB(skb)->hw_queue = 3269 local->hw.offchannel_tx_hw_queue; 3270 3271 /* This will handle all kinds of coalescing and immediate TX */ 3272 ret = ieee80211_start_roc_work(local, sdata, chan, 3273 wait, cookie, skb, 3274 IEEE80211_ROC_TYPE_MGMT_TX); 3275 if (ret) 3276 kfree_skb(skb); 3277 out_unlock: 3278 mutex_unlock(&local->mtx); 3279 return ret; 3280 } 3281 3282 static int ieee80211_mgmt_tx_cancel_wait(struct wiphy *wiphy, 3283 struct wireless_dev *wdev, 3284 u64 cookie) 3285 { 3286 struct ieee80211_local *local = wiphy_priv(wiphy); 3287 3288 return ieee80211_cancel_roc(local, cookie, true); 3289 } 3290 3291 static void ieee80211_mgmt_frame_register(struct wiphy *wiphy, 3292 struct wireless_dev *wdev, 3293 u16 frame_type, bool reg) 3294 { 3295 struct ieee80211_local *local = wiphy_priv(wiphy); 3296 3297 switch (frame_type) { 3298 case IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_PROBE_REQ: 3299 if (reg) 3300 local->probe_req_reg++; 3301 else 3302 local->probe_req_reg--; 3303 3304 if (!local->open_count) 3305 break; 3306 3307 ieee80211_queue_work(&local->hw, &local->reconfig_filter); 3308 break; 3309 default: 3310 break; 3311 } 3312 } 3313 3314 static int ieee80211_set_antenna(struct wiphy *wiphy, u32 tx_ant, u32 rx_ant) 3315 { 3316 struct ieee80211_local *local = wiphy_priv(wiphy); 3317 3318 if (local->started) 3319 return -EOPNOTSUPP; 3320 3321 return drv_set_antenna(local, tx_ant, rx_ant); 3322 } 3323 3324 static int ieee80211_get_antenna(struct wiphy *wiphy, u32 *tx_ant, u32 *rx_ant) 3325 { 3326 struct ieee80211_local *local = wiphy_priv(wiphy); 3327 3328 return drv_get_antenna(local, tx_ant, rx_ant); 3329 } 3330 3331 static int ieee80211_set_ringparam(struct wiphy *wiphy, u32 tx, u32 rx) 3332 { 3333 struct ieee80211_local *local = wiphy_priv(wiphy); 3334 3335 return drv_set_ringparam(local, tx, rx); 3336 } 3337 3338 static void ieee80211_get_ringparam(struct wiphy *wiphy, 3339 u32 *tx, u32 *tx_max, u32 *rx, u32 *rx_max) 3340 { 3341 struct ieee80211_local *local = wiphy_priv(wiphy); 3342 3343 drv_get_ringparam(local, tx, tx_max, rx, rx_max); 3344 } 3345 3346 static int ieee80211_set_rekey_data(struct wiphy *wiphy, 3347 struct net_device *dev, 3348 struct cfg80211_gtk_rekey_data *data) 3349 { 3350 struct ieee80211_local *local = wiphy_priv(wiphy); 3351 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 3352 3353 if (!local->ops->set_rekey_data) 3354 return -EOPNOTSUPP; 3355 3356 drv_set_rekey_data(local, sdata, data); 3357 3358 return 0; 3359 } 3360 3361 static void ieee80211_tdls_add_ext_capab(struct sk_buff *skb) 3362 { 3363 u8 *pos = (void *)skb_put(skb, 7); 3364 3365 *pos++ = WLAN_EID_EXT_CAPABILITY; 3366 *pos++ = 5; /* len */ 3367 *pos++ = 0x0; 3368 *pos++ = 0x0; 3369 *pos++ = 0x0; 3370 *pos++ = 0x0; 3371 *pos++ = WLAN_EXT_CAPA5_TDLS_ENABLED; 3372 } 3373 3374 static u16 ieee80211_get_tdls_sta_capab(struct ieee80211_sub_if_data *sdata) 3375 { 3376 struct ieee80211_local *local = sdata->local; 3377 u16 capab; 3378 3379 capab = 0; 3380 if (ieee80211_get_sdata_band(sdata) != IEEE80211_BAND_2GHZ) 3381 return capab; 3382 3383 if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_SLOT_INCAPABLE)) 3384 capab |= WLAN_CAPABILITY_SHORT_SLOT_TIME; 3385 if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_PREAMBLE_INCAPABLE)) 3386 capab |= WLAN_CAPABILITY_SHORT_PREAMBLE; 3387 3388 return capab; 3389 } 3390 3391 static void ieee80211_tdls_add_link_ie(struct sk_buff *skb, u8 *src_addr, 3392 u8 *peer, u8 *bssid) 3393 { 3394 struct ieee80211_tdls_lnkie *lnkid; 3395 3396 lnkid = (void *)skb_put(skb, sizeof(struct ieee80211_tdls_lnkie)); 3397 3398 lnkid->ie_type = WLAN_EID_LINK_ID; 3399 lnkid->ie_len = sizeof(struct ieee80211_tdls_lnkie) - 2; 3400 3401 memcpy(lnkid->bssid, bssid, ETH_ALEN); 3402 memcpy(lnkid->init_sta, src_addr, ETH_ALEN); 3403 memcpy(lnkid->resp_sta, peer, ETH_ALEN); 3404 } 3405 3406 static int 3407 ieee80211_prep_tdls_encap_data(struct wiphy *wiphy, struct net_device *dev, 3408 u8 *peer, u8 action_code, u8 dialog_token, 3409 u16 status_code, struct sk_buff *skb) 3410 { 3411 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 3412 enum ieee80211_band band = ieee80211_get_sdata_band(sdata); 3413 struct ieee80211_tdls_data *tf; 3414 3415 tf = (void *)skb_put(skb, offsetof(struct ieee80211_tdls_data, u)); 3416 3417 memcpy(tf->da, peer, ETH_ALEN); 3418 memcpy(tf->sa, sdata->vif.addr, ETH_ALEN); 3419 tf->ether_type = cpu_to_be16(ETH_P_TDLS); 3420 tf->payload_type = WLAN_TDLS_SNAP_RFTYPE; 3421 3422 switch (action_code) { 3423 case WLAN_TDLS_SETUP_REQUEST: 3424 tf->category = WLAN_CATEGORY_TDLS; 3425 tf->action_code = WLAN_TDLS_SETUP_REQUEST; 3426 3427 skb_put(skb, sizeof(tf->u.setup_req)); 3428 tf->u.setup_req.dialog_token = dialog_token; 3429 tf->u.setup_req.capability = 3430 cpu_to_le16(ieee80211_get_tdls_sta_capab(sdata)); 3431 3432 ieee80211_add_srates_ie(sdata, skb, false, band); 3433 ieee80211_add_ext_srates_ie(sdata, skb, false, band); 3434 ieee80211_tdls_add_ext_capab(skb); 3435 break; 3436 case WLAN_TDLS_SETUP_RESPONSE: 3437 tf->category = WLAN_CATEGORY_TDLS; 3438 tf->action_code = WLAN_TDLS_SETUP_RESPONSE; 3439 3440 skb_put(skb, sizeof(tf->u.setup_resp)); 3441 tf->u.setup_resp.status_code = cpu_to_le16(status_code); 3442 tf->u.setup_resp.dialog_token = dialog_token; 3443 tf->u.setup_resp.capability = 3444 cpu_to_le16(ieee80211_get_tdls_sta_capab(sdata)); 3445 3446 ieee80211_add_srates_ie(sdata, skb, false, band); 3447 ieee80211_add_ext_srates_ie(sdata, skb, false, band); 3448 ieee80211_tdls_add_ext_capab(skb); 3449 break; 3450 case WLAN_TDLS_SETUP_CONFIRM: 3451 tf->category = WLAN_CATEGORY_TDLS; 3452 tf->action_code = WLAN_TDLS_SETUP_CONFIRM; 3453 3454 skb_put(skb, sizeof(tf->u.setup_cfm)); 3455 tf->u.setup_cfm.status_code = cpu_to_le16(status_code); 3456 tf->u.setup_cfm.dialog_token = dialog_token; 3457 break; 3458 case WLAN_TDLS_TEARDOWN: 3459 tf->category = WLAN_CATEGORY_TDLS; 3460 tf->action_code = WLAN_TDLS_TEARDOWN; 3461 3462 skb_put(skb, sizeof(tf->u.teardown)); 3463 tf->u.teardown.reason_code = cpu_to_le16(status_code); 3464 break; 3465 case WLAN_TDLS_DISCOVERY_REQUEST: 3466 tf->category = WLAN_CATEGORY_TDLS; 3467 tf->action_code = WLAN_TDLS_DISCOVERY_REQUEST; 3468 3469 skb_put(skb, sizeof(tf->u.discover_req)); 3470 tf->u.discover_req.dialog_token = dialog_token; 3471 break; 3472 default: 3473 return -EINVAL; 3474 } 3475 3476 return 0; 3477 } 3478 3479 static int 3480 ieee80211_prep_tdls_direct(struct wiphy *wiphy, struct net_device *dev, 3481 u8 *peer, u8 action_code, u8 dialog_token, 3482 u16 status_code, struct sk_buff *skb) 3483 { 3484 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 3485 enum ieee80211_band band = ieee80211_get_sdata_band(sdata); 3486 struct ieee80211_mgmt *mgmt; 3487 3488 mgmt = (void *)skb_put(skb, 24); 3489 memset(mgmt, 0, 24); 3490 memcpy(mgmt->da, peer, ETH_ALEN); 3491 memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN); 3492 memcpy(mgmt->bssid, sdata->u.mgd.bssid, ETH_ALEN); 3493 3494 mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | 3495 IEEE80211_STYPE_ACTION); 3496 3497 switch (action_code) { 3498 case WLAN_PUB_ACTION_TDLS_DISCOVER_RES: 3499 skb_put(skb, 1 + sizeof(mgmt->u.action.u.tdls_discover_resp)); 3500 mgmt->u.action.category = WLAN_CATEGORY_PUBLIC; 3501 mgmt->u.action.u.tdls_discover_resp.action_code = 3502 WLAN_PUB_ACTION_TDLS_DISCOVER_RES; 3503 mgmt->u.action.u.tdls_discover_resp.dialog_token = 3504 dialog_token; 3505 mgmt->u.action.u.tdls_discover_resp.capability = 3506 cpu_to_le16(ieee80211_get_tdls_sta_capab(sdata)); 3507 3508 ieee80211_add_srates_ie(sdata, skb, false, band); 3509 ieee80211_add_ext_srates_ie(sdata, skb, false, band); 3510 ieee80211_tdls_add_ext_capab(skb); 3511 break; 3512 default: 3513 return -EINVAL; 3514 } 3515 3516 return 0; 3517 } 3518 3519 static int ieee80211_tdls_mgmt(struct wiphy *wiphy, struct net_device *dev, 3520 u8 *peer, u8 action_code, u8 dialog_token, 3521 u16 status_code, const u8 *extra_ies, 3522 size_t extra_ies_len) 3523 { 3524 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 3525 struct ieee80211_local *local = sdata->local; 3526 struct sk_buff *skb = NULL; 3527 bool send_direct; 3528 int ret; 3529 3530 if (!(wiphy->flags & WIPHY_FLAG_SUPPORTS_TDLS)) 3531 return -ENOTSUPP; 3532 3533 /* make sure we are in managed mode, and associated */ 3534 if (sdata->vif.type != NL80211_IFTYPE_STATION || 3535 !sdata->u.mgd.associated) 3536 return -EINVAL; 3537 3538 tdls_dbg(sdata, "TDLS mgmt action %d peer %pM\n", 3539 action_code, peer); 3540 3541 skb = dev_alloc_skb(local->hw.extra_tx_headroom + 3542 max(sizeof(struct ieee80211_mgmt), 3543 sizeof(struct ieee80211_tdls_data)) + 3544 50 + /* supported rates */ 3545 7 + /* ext capab */ 3546 extra_ies_len + 3547 sizeof(struct ieee80211_tdls_lnkie)); 3548 if (!skb) 3549 return -ENOMEM; 3550 3551 skb_reserve(skb, local->hw.extra_tx_headroom); 3552 3553 switch (action_code) { 3554 case WLAN_TDLS_SETUP_REQUEST: 3555 case WLAN_TDLS_SETUP_RESPONSE: 3556 case WLAN_TDLS_SETUP_CONFIRM: 3557 case WLAN_TDLS_TEARDOWN: 3558 case WLAN_TDLS_DISCOVERY_REQUEST: 3559 ret = ieee80211_prep_tdls_encap_data(wiphy, dev, peer, 3560 action_code, dialog_token, 3561 status_code, skb); 3562 send_direct = false; 3563 break; 3564 case WLAN_PUB_ACTION_TDLS_DISCOVER_RES: 3565 ret = ieee80211_prep_tdls_direct(wiphy, dev, peer, action_code, 3566 dialog_token, status_code, 3567 skb); 3568 send_direct = true; 3569 break; 3570 default: 3571 ret = -ENOTSUPP; 3572 break; 3573 } 3574 3575 if (ret < 0) 3576 goto fail; 3577 3578 if (extra_ies_len) 3579 memcpy(skb_put(skb, extra_ies_len), extra_ies, extra_ies_len); 3580 3581 /* the TDLS link IE is always added last */ 3582 switch (action_code) { 3583 case WLAN_TDLS_SETUP_REQUEST: 3584 case WLAN_TDLS_SETUP_CONFIRM: 3585 case WLAN_TDLS_TEARDOWN: 3586 case WLAN_TDLS_DISCOVERY_REQUEST: 3587 /* we are the initiator */ 3588 ieee80211_tdls_add_link_ie(skb, sdata->vif.addr, peer, 3589 sdata->u.mgd.bssid); 3590 break; 3591 case WLAN_TDLS_SETUP_RESPONSE: 3592 case WLAN_PUB_ACTION_TDLS_DISCOVER_RES: 3593 /* we are the responder */ 3594 ieee80211_tdls_add_link_ie(skb, peer, sdata->vif.addr, 3595 sdata->u.mgd.bssid); 3596 break; 3597 default: 3598 ret = -ENOTSUPP; 3599 goto fail; 3600 } 3601 3602 if (send_direct) { 3603 ieee80211_tx_skb(sdata, skb); 3604 return 0; 3605 } 3606 3607 /* 3608 * According to 802.11z: Setup req/resp are sent in AC_BK, otherwise 3609 * we should default to AC_VI. 3610 */ 3611 switch (action_code) { 3612 case WLAN_TDLS_SETUP_REQUEST: 3613 case WLAN_TDLS_SETUP_RESPONSE: 3614 skb_set_queue_mapping(skb, IEEE80211_AC_BK); 3615 skb->priority = 2; 3616 break; 3617 default: 3618 skb_set_queue_mapping(skb, IEEE80211_AC_VI); 3619 skb->priority = 5; 3620 break; 3621 } 3622 3623 /* disable bottom halves when entering the Tx path */ 3624 local_bh_disable(); 3625 ret = ieee80211_subif_start_xmit(skb, dev); 3626 local_bh_enable(); 3627 3628 return ret; 3629 3630 fail: 3631 dev_kfree_skb(skb); 3632 return ret; 3633 } 3634 3635 static int ieee80211_tdls_oper(struct wiphy *wiphy, struct net_device *dev, 3636 u8 *peer, enum nl80211_tdls_operation oper) 3637 { 3638 struct sta_info *sta; 3639 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 3640 3641 if (!(wiphy->flags & WIPHY_FLAG_SUPPORTS_TDLS)) 3642 return -ENOTSUPP; 3643 3644 if (sdata->vif.type != NL80211_IFTYPE_STATION) 3645 return -EINVAL; 3646 3647 tdls_dbg(sdata, "TDLS oper %d peer %pM\n", oper, peer); 3648 3649 switch (oper) { 3650 case NL80211_TDLS_ENABLE_LINK: 3651 rcu_read_lock(); 3652 sta = sta_info_get(sdata, peer); 3653 if (!sta) { 3654 rcu_read_unlock(); 3655 return -ENOLINK; 3656 } 3657 3658 set_sta_flag(sta, WLAN_STA_TDLS_PEER_AUTH); 3659 rcu_read_unlock(); 3660 break; 3661 case NL80211_TDLS_DISABLE_LINK: 3662 return sta_info_destroy_addr(sdata, peer); 3663 case NL80211_TDLS_TEARDOWN: 3664 case NL80211_TDLS_SETUP: 3665 case NL80211_TDLS_DISCOVERY_REQ: 3666 /* We don't support in-driver setup/teardown/discovery */ 3667 return -ENOTSUPP; 3668 default: 3669 return -ENOTSUPP; 3670 } 3671 3672 return 0; 3673 } 3674 3675 static int ieee80211_probe_client(struct wiphy *wiphy, struct net_device *dev, 3676 const u8 *peer, u64 *cookie) 3677 { 3678 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 3679 struct ieee80211_local *local = sdata->local; 3680 struct ieee80211_qos_hdr *nullfunc; 3681 struct sk_buff *skb; 3682 int size = sizeof(*nullfunc); 3683 __le16 fc; 3684 bool qos; 3685 struct ieee80211_tx_info *info; 3686 struct sta_info *sta; 3687 struct ieee80211_chanctx_conf *chanctx_conf; 3688 enum ieee80211_band band; 3689 3690 rcu_read_lock(); 3691 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); 3692 if (WARN_ON(!chanctx_conf)) { 3693 rcu_read_unlock(); 3694 return -EINVAL; 3695 } 3696 band = chanctx_conf->def.chan->band; 3697 sta = sta_info_get_bss(sdata, peer); 3698 if (sta) { 3699 qos = test_sta_flag(sta, WLAN_STA_WME); 3700 } else { 3701 rcu_read_unlock(); 3702 return -ENOLINK; 3703 } 3704 3705 if (qos) { 3706 fc = cpu_to_le16(IEEE80211_FTYPE_DATA | 3707 IEEE80211_STYPE_QOS_NULLFUNC | 3708 IEEE80211_FCTL_FROMDS); 3709 } else { 3710 size -= 2; 3711 fc = cpu_to_le16(IEEE80211_FTYPE_DATA | 3712 IEEE80211_STYPE_NULLFUNC | 3713 IEEE80211_FCTL_FROMDS); 3714 } 3715 3716 skb = dev_alloc_skb(local->hw.extra_tx_headroom + size); 3717 if (!skb) { 3718 rcu_read_unlock(); 3719 return -ENOMEM; 3720 } 3721 3722 skb->dev = dev; 3723 3724 skb_reserve(skb, local->hw.extra_tx_headroom); 3725 3726 nullfunc = (void *) skb_put(skb, size); 3727 nullfunc->frame_control = fc; 3728 nullfunc->duration_id = 0; 3729 memcpy(nullfunc->addr1, sta->sta.addr, ETH_ALEN); 3730 memcpy(nullfunc->addr2, sdata->vif.addr, ETH_ALEN); 3731 memcpy(nullfunc->addr3, sdata->vif.addr, ETH_ALEN); 3732 nullfunc->seq_ctrl = 0; 3733 3734 info = IEEE80211_SKB_CB(skb); 3735 3736 info->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS | 3737 IEEE80211_TX_INTFL_NL80211_FRAME_TX; 3738 3739 skb_set_queue_mapping(skb, IEEE80211_AC_VO); 3740 skb->priority = 7; 3741 if (qos) 3742 nullfunc->qos_ctrl = cpu_to_le16(7); 3743 3744 local_bh_disable(); 3745 ieee80211_xmit(sdata, skb, band); 3746 local_bh_enable(); 3747 rcu_read_unlock(); 3748 3749 *cookie = (unsigned long) skb; 3750 return 0; 3751 } 3752 3753 static int ieee80211_cfg_get_channel(struct wiphy *wiphy, 3754 struct wireless_dev *wdev, 3755 struct cfg80211_chan_def *chandef) 3756 { 3757 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 3758 struct ieee80211_local *local = wiphy_priv(wiphy); 3759 struct ieee80211_chanctx_conf *chanctx_conf; 3760 int ret = -ENODATA; 3761 3762 rcu_read_lock(); 3763 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); 3764 if (chanctx_conf) { 3765 *chandef = chanctx_conf->def; 3766 ret = 0; 3767 } else if (local->open_count > 0 && 3768 local->open_count == local->monitors && 3769 sdata->vif.type == NL80211_IFTYPE_MONITOR) { 3770 if (local->use_chanctx) 3771 *chandef = local->monitor_chandef; 3772 else 3773 *chandef = local->_oper_chandef; 3774 ret = 0; 3775 } 3776 rcu_read_unlock(); 3777 3778 return ret; 3779 } 3780 3781 #ifdef CONFIG_PM 3782 static void ieee80211_set_wakeup(struct wiphy *wiphy, bool enabled) 3783 { 3784 drv_set_wakeup(wiphy_priv(wiphy), enabled); 3785 } 3786 #endif 3787 3788 struct cfg80211_ops mac80211_config_ops = { 3789 .add_virtual_intf = ieee80211_add_iface, 3790 .del_virtual_intf = ieee80211_del_iface, 3791 .change_virtual_intf = ieee80211_change_iface, 3792 .start_p2p_device = ieee80211_start_p2p_device, 3793 .stop_p2p_device = ieee80211_stop_p2p_device, 3794 .add_key = ieee80211_add_key, 3795 .del_key = ieee80211_del_key, 3796 .get_key = ieee80211_get_key, 3797 .set_default_key = ieee80211_config_default_key, 3798 .set_default_mgmt_key = ieee80211_config_default_mgmt_key, 3799 .start_ap = ieee80211_start_ap, 3800 .change_beacon = ieee80211_change_beacon, 3801 .stop_ap = ieee80211_stop_ap, 3802 .add_station = ieee80211_add_station, 3803 .del_station = ieee80211_del_station, 3804 .change_station = ieee80211_change_station, 3805 .get_station = ieee80211_get_station, 3806 .dump_station = ieee80211_dump_station, 3807 .dump_survey = ieee80211_dump_survey, 3808 #ifdef CONFIG_MAC80211_MESH 3809 .add_mpath = ieee80211_add_mpath, 3810 .del_mpath = ieee80211_del_mpath, 3811 .change_mpath = ieee80211_change_mpath, 3812 .get_mpath = ieee80211_get_mpath, 3813 .dump_mpath = ieee80211_dump_mpath, 3814 .update_mesh_config = ieee80211_update_mesh_config, 3815 .get_mesh_config = ieee80211_get_mesh_config, 3816 .join_mesh = ieee80211_join_mesh, 3817 .leave_mesh = ieee80211_leave_mesh, 3818 #endif 3819 .change_bss = ieee80211_change_bss, 3820 .set_txq_params = ieee80211_set_txq_params, 3821 .set_monitor_channel = ieee80211_set_monitor_channel, 3822 .suspend = ieee80211_suspend, 3823 .resume = ieee80211_resume, 3824 .scan = ieee80211_scan, 3825 .sched_scan_start = ieee80211_sched_scan_start, 3826 .sched_scan_stop = ieee80211_sched_scan_stop, 3827 .auth = ieee80211_auth, 3828 .assoc = ieee80211_assoc, 3829 .deauth = ieee80211_deauth, 3830 .disassoc = ieee80211_disassoc, 3831 .join_ibss = ieee80211_join_ibss, 3832 .leave_ibss = ieee80211_leave_ibss, 3833 .set_mcast_rate = ieee80211_set_mcast_rate, 3834 .set_wiphy_params = ieee80211_set_wiphy_params, 3835 .set_tx_power = ieee80211_set_tx_power, 3836 .get_tx_power = ieee80211_get_tx_power, 3837 .set_wds_peer = ieee80211_set_wds_peer, 3838 .rfkill_poll = ieee80211_rfkill_poll, 3839 CFG80211_TESTMODE_CMD(ieee80211_testmode_cmd) 3840 CFG80211_TESTMODE_DUMP(ieee80211_testmode_dump) 3841 .set_power_mgmt = ieee80211_set_power_mgmt, 3842 .set_bitrate_mask = ieee80211_set_bitrate_mask, 3843 .remain_on_channel = ieee80211_remain_on_channel, 3844 .cancel_remain_on_channel = ieee80211_cancel_remain_on_channel, 3845 .mgmt_tx = ieee80211_mgmt_tx, 3846 .mgmt_tx_cancel_wait = ieee80211_mgmt_tx_cancel_wait, 3847 .set_cqm_rssi_config = ieee80211_set_cqm_rssi_config, 3848 .mgmt_frame_register = ieee80211_mgmt_frame_register, 3849 .set_antenna = ieee80211_set_antenna, 3850 .get_antenna = ieee80211_get_antenna, 3851 .set_ringparam = ieee80211_set_ringparam, 3852 .get_ringparam = ieee80211_get_ringparam, 3853 .set_rekey_data = ieee80211_set_rekey_data, 3854 .tdls_oper = ieee80211_tdls_oper, 3855 .tdls_mgmt = ieee80211_tdls_mgmt, 3856 .probe_client = ieee80211_probe_client, 3857 .set_noack_map = ieee80211_set_noack_map, 3858 #ifdef CONFIG_PM 3859 .set_wakeup = ieee80211_set_wakeup, 3860 #endif 3861 .get_et_sset_count = ieee80211_get_et_sset_count, 3862 .get_et_stats = ieee80211_get_et_stats, 3863 .get_et_strings = ieee80211_get_et_strings, 3864 .get_channel = ieee80211_cfg_get_channel, 3865 .start_radar_detection = ieee80211_start_radar_detection, 3866 .channel_switch = ieee80211_channel_switch, 3867 }; 3868