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 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 113 int ret; 114 115 mutex_lock(&sdata->local->chanctx_mtx); 116 ret = ieee80211_check_combinations(sdata, NULL, 0, 0); 117 mutex_unlock(&sdata->local->chanctx_mtx); 118 if (ret < 0) 119 return ret; 120 121 return ieee80211_do_open(wdev, true); 122 } 123 124 static void ieee80211_stop_p2p_device(struct wiphy *wiphy, 125 struct wireless_dev *wdev) 126 { 127 ieee80211_sdata_stop(IEEE80211_WDEV_TO_SUB_IF(wdev)); 128 } 129 130 static int ieee80211_set_noack_map(struct wiphy *wiphy, 131 struct net_device *dev, 132 u16 noack_map) 133 { 134 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 135 136 sdata->noack_map = noack_map; 137 return 0; 138 } 139 140 static int ieee80211_add_key(struct wiphy *wiphy, struct net_device *dev, 141 u8 key_idx, bool pairwise, const u8 *mac_addr, 142 struct key_params *params) 143 { 144 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 145 struct ieee80211_local *local = sdata->local; 146 struct sta_info *sta = NULL; 147 const struct ieee80211_cipher_scheme *cs = NULL; 148 struct ieee80211_key *key; 149 int err; 150 151 if (!ieee80211_sdata_running(sdata)) 152 return -ENETDOWN; 153 154 /* reject WEP and TKIP keys if WEP failed to initialize */ 155 switch (params->cipher) { 156 case WLAN_CIPHER_SUITE_WEP40: 157 case WLAN_CIPHER_SUITE_TKIP: 158 case WLAN_CIPHER_SUITE_WEP104: 159 if (IS_ERR(local->wep_tx_tfm)) 160 return -EINVAL; 161 break; 162 case WLAN_CIPHER_SUITE_CCMP: 163 case WLAN_CIPHER_SUITE_AES_CMAC: 164 case WLAN_CIPHER_SUITE_GCMP: 165 break; 166 default: 167 cs = ieee80211_cs_get(local, params->cipher, sdata->vif.type); 168 break; 169 } 170 171 key = ieee80211_key_alloc(params->cipher, key_idx, params->key_len, 172 params->key, params->seq_len, params->seq, 173 cs); 174 if (IS_ERR(key)) 175 return PTR_ERR(key); 176 177 if (pairwise) 178 key->conf.flags |= IEEE80211_KEY_FLAG_PAIRWISE; 179 180 mutex_lock(&local->sta_mtx); 181 182 if (mac_addr) { 183 if (ieee80211_vif_is_mesh(&sdata->vif)) 184 sta = sta_info_get(sdata, mac_addr); 185 else 186 sta = sta_info_get_bss(sdata, mac_addr); 187 /* 188 * The ASSOC test makes sure the driver is ready to 189 * receive the key. When wpa_supplicant has roamed 190 * using FT, it attempts to set the key before 191 * association has completed, this rejects that attempt 192 * so it will set the key again after assocation. 193 * 194 * TODO: accept the key if we have a station entry and 195 * add it to the device after the station. 196 */ 197 if (!sta || !test_sta_flag(sta, WLAN_STA_ASSOC)) { 198 ieee80211_key_free_unused(key); 199 err = -ENOENT; 200 goto out_unlock; 201 } 202 } 203 204 switch (sdata->vif.type) { 205 case NL80211_IFTYPE_STATION: 206 if (sdata->u.mgd.mfp != IEEE80211_MFP_DISABLED) 207 key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT; 208 break; 209 case NL80211_IFTYPE_AP: 210 case NL80211_IFTYPE_AP_VLAN: 211 /* Keys without a station are used for TX only */ 212 if (key->sta && test_sta_flag(key->sta, WLAN_STA_MFP)) 213 key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT; 214 break; 215 case NL80211_IFTYPE_ADHOC: 216 /* no MFP (yet) */ 217 break; 218 case NL80211_IFTYPE_MESH_POINT: 219 #ifdef CONFIG_MAC80211_MESH 220 if (sdata->u.mesh.security != IEEE80211_MESH_SEC_NONE) 221 key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT; 222 break; 223 #endif 224 case NL80211_IFTYPE_WDS: 225 case NL80211_IFTYPE_MONITOR: 226 case NL80211_IFTYPE_P2P_DEVICE: 227 case NL80211_IFTYPE_UNSPECIFIED: 228 case NUM_NL80211_IFTYPES: 229 case NL80211_IFTYPE_P2P_CLIENT: 230 case NL80211_IFTYPE_P2P_GO: 231 /* shouldn't happen */ 232 WARN_ON_ONCE(1); 233 break; 234 } 235 236 if (sta) 237 sta->cipher_scheme = cs; 238 239 err = ieee80211_key_link(key, sdata, sta); 240 241 out_unlock: 242 mutex_unlock(&local->sta_mtx); 243 244 return err; 245 } 246 247 static int ieee80211_del_key(struct wiphy *wiphy, struct net_device *dev, 248 u8 key_idx, bool pairwise, const u8 *mac_addr) 249 { 250 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 251 struct ieee80211_local *local = sdata->local; 252 struct sta_info *sta; 253 struct ieee80211_key *key = NULL; 254 int ret; 255 256 mutex_lock(&local->sta_mtx); 257 mutex_lock(&local->key_mtx); 258 259 if (mac_addr) { 260 ret = -ENOENT; 261 262 sta = sta_info_get_bss(sdata, mac_addr); 263 if (!sta) 264 goto out_unlock; 265 266 if (pairwise) 267 key = key_mtx_dereference(local, sta->ptk[key_idx]); 268 else 269 key = key_mtx_dereference(local, sta->gtk[key_idx]); 270 } else 271 key = key_mtx_dereference(local, sdata->keys[key_idx]); 272 273 if (!key) { 274 ret = -ENOENT; 275 goto out_unlock; 276 } 277 278 ieee80211_key_free(key, true); 279 280 ret = 0; 281 out_unlock: 282 mutex_unlock(&local->key_mtx); 283 mutex_unlock(&local->sta_mtx); 284 285 return ret; 286 } 287 288 static int ieee80211_get_key(struct wiphy *wiphy, struct net_device *dev, 289 u8 key_idx, bool pairwise, const u8 *mac_addr, 290 void *cookie, 291 void (*callback)(void *cookie, 292 struct key_params *params)) 293 { 294 struct ieee80211_sub_if_data *sdata; 295 struct sta_info *sta = NULL; 296 u8 seq[6] = {0}; 297 struct key_params params; 298 struct ieee80211_key *key = NULL; 299 u64 pn64; 300 u32 iv32; 301 u16 iv16; 302 int err = -ENOENT; 303 304 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 305 306 rcu_read_lock(); 307 308 if (mac_addr) { 309 sta = sta_info_get_bss(sdata, mac_addr); 310 if (!sta) 311 goto out; 312 313 if (pairwise && key_idx < NUM_DEFAULT_KEYS) 314 key = rcu_dereference(sta->ptk[key_idx]); 315 else if (!pairwise && 316 key_idx < NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS) 317 key = rcu_dereference(sta->gtk[key_idx]); 318 } else 319 key = rcu_dereference(sdata->keys[key_idx]); 320 321 if (!key) 322 goto out; 323 324 memset(¶ms, 0, sizeof(params)); 325 326 params.cipher = key->conf.cipher; 327 328 switch (key->conf.cipher) { 329 case WLAN_CIPHER_SUITE_TKIP: 330 iv32 = key->u.tkip.tx.iv32; 331 iv16 = key->u.tkip.tx.iv16; 332 333 if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE) 334 drv_get_tkip_seq(sdata->local, 335 key->conf.hw_key_idx, 336 &iv32, &iv16); 337 338 seq[0] = iv16 & 0xff; 339 seq[1] = (iv16 >> 8) & 0xff; 340 seq[2] = iv32 & 0xff; 341 seq[3] = (iv32 >> 8) & 0xff; 342 seq[4] = (iv32 >> 16) & 0xff; 343 seq[5] = (iv32 >> 24) & 0xff; 344 params.seq = seq; 345 params.seq_len = 6; 346 break; 347 case WLAN_CIPHER_SUITE_CCMP: 348 pn64 = atomic64_read(&key->u.ccmp.tx_pn); 349 seq[0] = pn64; 350 seq[1] = pn64 >> 8; 351 seq[2] = pn64 >> 16; 352 seq[3] = pn64 >> 24; 353 seq[4] = pn64 >> 32; 354 seq[5] = pn64 >> 40; 355 params.seq = seq; 356 params.seq_len = 6; 357 break; 358 case WLAN_CIPHER_SUITE_AES_CMAC: 359 pn64 = atomic64_read(&key->u.aes_cmac.tx_pn); 360 seq[0] = pn64; 361 seq[1] = pn64 >> 8; 362 seq[2] = pn64 >> 16; 363 seq[3] = pn64 >> 24; 364 seq[4] = pn64 >> 32; 365 seq[5] = pn64 >> 40; 366 params.seq = seq; 367 params.seq_len = 6; 368 break; 369 } 370 371 params.key = key->conf.key; 372 params.key_len = key->conf.keylen; 373 374 callback(cookie, ¶ms); 375 err = 0; 376 377 out: 378 rcu_read_unlock(); 379 return err; 380 } 381 382 static int ieee80211_config_default_key(struct wiphy *wiphy, 383 struct net_device *dev, 384 u8 key_idx, bool uni, 385 bool multi) 386 { 387 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 388 389 ieee80211_set_default_key(sdata, key_idx, uni, multi); 390 391 return 0; 392 } 393 394 static int ieee80211_config_default_mgmt_key(struct wiphy *wiphy, 395 struct net_device *dev, 396 u8 key_idx) 397 { 398 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 399 400 ieee80211_set_default_mgmt_key(sdata, key_idx); 401 402 return 0; 403 } 404 405 void sta_set_rate_info_tx(struct sta_info *sta, 406 const struct ieee80211_tx_rate *rate, 407 struct rate_info *rinfo) 408 { 409 rinfo->flags = 0; 410 if (rate->flags & IEEE80211_TX_RC_MCS) { 411 rinfo->flags |= RATE_INFO_FLAGS_MCS; 412 rinfo->mcs = rate->idx; 413 } else if (rate->flags & IEEE80211_TX_RC_VHT_MCS) { 414 rinfo->flags |= RATE_INFO_FLAGS_VHT_MCS; 415 rinfo->mcs = ieee80211_rate_get_vht_mcs(rate); 416 rinfo->nss = ieee80211_rate_get_vht_nss(rate); 417 } else { 418 struct ieee80211_supported_band *sband; 419 int shift = ieee80211_vif_get_shift(&sta->sdata->vif); 420 u16 brate; 421 422 sband = sta->local->hw.wiphy->bands[ 423 ieee80211_get_sdata_band(sta->sdata)]; 424 brate = sband->bitrates[rate->idx].bitrate; 425 rinfo->legacy = DIV_ROUND_UP(brate, 1 << shift); 426 } 427 if (rate->flags & IEEE80211_TX_RC_40_MHZ_WIDTH) 428 rinfo->flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH; 429 if (rate->flags & IEEE80211_TX_RC_80_MHZ_WIDTH) 430 rinfo->flags |= RATE_INFO_FLAGS_80_MHZ_WIDTH; 431 if (rate->flags & IEEE80211_TX_RC_160_MHZ_WIDTH) 432 rinfo->flags |= RATE_INFO_FLAGS_160_MHZ_WIDTH; 433 if (rate->flags & IEEE80211_TX_RC_SHORT_GI) 434 rinfo->flags |= RATE_INFO_FLAGS_SHORT_GI; 435 } 436 437 void sta_set_rate_info_rx(struct sta_info *sta, struct rate_info *rinfo) 438 { 439 rinfo->flags = 0; 440 441 if (sta->last_rx_rate_flag & RX_FLAG_HT) { 442 rinfo->flags |= RATE_INFO_FLAGS_MCS; 443 rinfo->mcs = sta->last_rx_rate_idx; 444 } else if (sta->last_rx_rate_flag & RX_FLAG_VHT) { 445 rinfo->flags |= RATE_INFO_FLAGS_VHT_MCS; 446 rinfo->nss = sta->last_rx_rate_vht_nss; 447 rinfo->mcs = sta->last_rx_rate_idx; 448 } else { 449 struct ieee80211_supported_band *sband; 450 int shift = ieee80211_vif_get_shift(&sta->sdata->vif); 451 u16 brate; 452 453 sband = sta->local->hw.wiphy->bands[ 454 ieee80211_get_sdata_band(sta->sdata)]; 455 brate = sband->bitrates[sta->last_rx_rate_idx].bitrate; 456 rinfo->legacy = DIV_ROUND_UP(brate, 1 << shift); 457 } 458 459 if (sta->last_rx_rate_flag & RX_FLAG_40MHZ) 460 rinfo->flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH; 461 if (sta->last_rx_rate_flag & RX_FLAG_SHORT_GI) 462 rinfo->flags |= RATE_INFO_FLAGS_SHORT_GI; 463 if (sta->last_rx_rate_vht_flag & RX_VHT_FLAG_80MHZ) 464 rinfo->flags |= RATE_INFO_FLAGS_80_MHZ_WIDTH; 465 if (sta->last_rx_rate_vht_flag & RX_VHT_FLAG_80P80MHZ) 466 rinfo->flags |= RATE_INFO_FLAGS_80P80_MHZ_WIDTH; 467 if (sta->last_rx_rate_vht_flag & RX_VHT_FLAG_160MHZ) 468 rinfo->flags |= RATE_INFO_FLAGS_160_MHZ_WIDTH; 469 } 470 471 static void sta_set_sinfo(struct sta_info *sta, struct station_info *sinfo) 472 { 473 struct ieee80211_sub_if_data *sdata = sta->sdata; 474 struct ieee80211_local *local = sdata->local; 475 struct rate_control_ref *ref = local->rate_ctrl; 476 struct timespec uptime; 477 u64 packets = 0; 478 u32 thr = 0; 479 int i, ac; 480 481 sinfo->generation = sdata->local->sta_generation; 482 483 sinfo->filled = STATION_INFO_INACTIVE_TIME | 484 STATION_INFO_RX_BYTES64 | 485 STATION_INFO_TX_BYTES64 | 486 STATION_INFO_RX_PACKETS | 487 STATION_INFO_TX_PACKETS | 488 STATION_INFO_TX_RETRIES | 489 STATION_INFO_TX_FAILED | 490 STATION_INFO_TX_BITRATE | 491 STATION_INFO_RX_BITRATE | 492 STATION_INFO_RX_DROP_MISC | 493 STATION_INFO_BSS_PARAM | 494 STATION_INFO_CONNECTED_TIME | 495 STATION_INFO_STA_FLAGS | 496 STATION_INFO_BEACON_LOSS_COUNT; 497 498 do_posix_clock_monotonic_gettime(&uptime); 499 sinfo->connected_time = uptime.tv_sec - sta->last_connected; 500 501 sinfo->inactive_time = jiffies_to_msecs(jiffies - sta->last_rx); 502 sinfo->tx_bytes = 0; 503 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) { 504 sinfo->tx_bytes += sta->tx_bytes[ac]; 505 packets += sta->tx_packets[ac]; 506 } 507 sinfo->tx_packets = packets; 508 sinfo->rx_bytes = sta->rx_bytes; 509 sinfo->rx_packets = sta->rx_packets; 510 sinfo->tx_retries = sta->tx_retry_count; 511 sinfo->tx_failed = sta->tx_retry_failed; 512 sinfo->rx_dropped_misc = sta->rx_dropped; 513 sinfo->beacon_loss_count = sta->beacon_loss_count; 514 515 if ((sta->local->hw.flags & IEEE80211_HW_SIGNAL_DBM) || 516 (sta->local->hw.flags & IEEE80211_HW_SIGNAL_UNSPEC)) { 517 sinfo->filled |= STATION_INFO_SIGNAL | STATION_INFO_SIGNAL_AVG; 518 if (!local->ops->get_rssi || 519 drv_get_rssi(local, sdata, &sta->sta, &sinfo->signal)) 520 sinfo->signal = (s8)sta->last_signal; 521 sinfo->signal_avg = (s8) -ewma_read(&sta->avg_signal); 522 } 523 if (sta->chains) { 524 sinfo->filled |= STATION_INFO_CHAIN_SIGNAL | 525 STATION_INFO_CHAIN_SIGNAL_AVG; 526 527 sinfo->chains = sta->chains; 528 for (i = 0; i < ARRAY_SIZE(sinfo->chain_signal); i++) { 529 sinfo->chain_signal[i] = sta->chain_signal_last[i]; 530 sinfo->chain_signal_avg[i] = 531 (s8) -ewma_read(&sta->chain_signal_avg[i]); 532 } 533 } 534 535 sta_set_rate_info_tx(sta, &sta->last_tx_rate, &sinfo->txrate); 536 sta_set_rate_info_rx(sta, &sinfo->rxrate); 537 538 if (ieee80211_vif_is_mesh(&sdata->vif)) { 539 #ifdef CONFIG_MAC80211_MESH 540 sinfo->filled |= STATION_INFO_LLID | 541 STATION_INFO_PLID | 542 STATION_INFO_PLINK_STATE | 543 STATION_INFO_LOCAL_PM | 544 STATION_INFO_PEER_PM | 545 STATION_INFO_NONPEER_PM; 546 547 sinfo->llid = sta->llid; 548 sinfo->plid = sta->plid; 549 sinfo->plink_state = sta->plink_state; 550 if (test_sta_flag(sta, WLAN_STA_TOFFSET_KNOWN)) { 551 sinfo->filled |= STATION_INFO_T_OFFSET; 552 sinfo->t_offset = sta->t_offset; 553 } 554 sinfo->local_pm = sta->local_pm; 555 sinfo->peer_pm = sta->peer_pm; 556 sinfo->nonpeer_pm = sta->nonpeer_pm; 557 #endif 558 } 559 560 sinfo->bss_param.flags = 0; 561 if (sdata->vif.bss_conf.use_cts_prot) 562 sinfo->bss_param.flags |= BSS_PARAM_FLAGS_CTS_PROT; 563 if (sdata->vif.bss_conf.use_short_preamble) 564 sinfo->bss_param.flags |= BSS_PARAM_FLAGS_SHORT_PREAMBLE; 565 if (sdata->vif.bss_conf.use_short_slot) 566 sinfo->bss_param.flags |= BSS_PARAM_FLAGS_SHORT_SLOT_TIME; 567 sinfo->bss_param.dtim_period = sdata->local->hw.conf.ps_dtim_period; 568 sinfo->bss_param.beacon_interval = sdata->vif.bss_conf.beacon_int; 569 570 sinfo->sta_flags.set = 0; 571 sinfo->sta_flags.mask = BIT(NL80211_STA_FLAG_AUTHORIZED) | 572 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) | 573 BIT(NL80211_STA_FLAG_WME) | 574 BIT(NL80211_STA_FLAG_MFP) | 575 BIT(NL80211_STA_FLAG_AUTHENTICATED) | 576 BIT(NL80211_STA_FLAG_ASSOCIATED) | 577 BIT(NL80211_STA_FLAG_TDLS_PEER); 578 if (test_sta_flag(sta, WLAN_STA_AUTHORIZED)) 579 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_AUTHORIZED); 580 if (test_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE)) 581 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_SHORT_PREAMBLE); 582 if (test_sta_flag(sta, WLAN_STA_WME)) 583 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_WME); 584 if (test_sta_flag(sta, WLAN_STA_MFP)) 585 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_MFP); 586 if (test_sta_flag(sta, WLAN_STA_AUTH)) 587 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_AUTHENTICATED); 588 if (test_sta_flag(sta, WLAN_STA_ASSOC)) 589 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_ASSOCIATED); 590 if (test_sta_flag(sta, WLAN_STA_TDLS_PEER)) 591 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_TDLS_PEER); 592 593 /* check if the driver has a SW RC implementation */ 594 if (ref && ref->ops->get_expected_throughput) 595 thr = ref->ops->get_expected_throughput(sta->rate_ctrl_priv); 596 else 597 thr = drv_get_expected_throughput(local, &sta->sta); 598 599 if (thr != 0) { 600 sinfo->filled |= STATION_INFO_EXPECTED_THROUGHPUT; 601 sinfo->expected_throughput = thr; 602 } 603 } 604 605 static const char ieee80211_gstrings_sta_stats[][ETH_GSTRING_LEN] = { 606 "rx_packets", "rx_bytes", "wep_weak_iv_count", 607 "rx_duplicates", "rx_fragments", "rx_dropped", 608 "tx_packets", "tx_bytes", "tx_fragments", 609 "tx_filtered", "tx_retry_failed", "tx_retries", 610 "beacon_loss", "sta_state", "txrate", "rxrate", "signal", 611 "channel", "noise", "ch_time", "ch_time_busy", 612 "ch_time_ext_busy", "ch_time_rx", "ch_time_tx" 613 }; 614 #define STA_STATS_LEN ARRAY_SIZE(ieee80211_gstrings_sta_stats) 615 616 static int ieee80211_get_et_sset_count(struct wiphy *wiphy, 617 struct net_device *dev, 618 int sset) 619 { 620 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 621 int rv = 0; 622 623 if (sset == ETH_SS_STATS) 624 rv += STA_STATS_LEN; 625 626 rv += drv_get_et_sset_count(sdata, sset); 627 628 if (rv == 0) 629 return -EOPNOTSUPP; 630 return rv; 631 } 632 633 static void ieee80211_get_et_stats(struct wiphy *wiphy, 634 struct net_device *dev, 635 struct ethtool_stats *stats, 636 u64 *data) 637 { 638 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 639 struct ieee80211_chanctx_conf *chanctx_conf; 640 struct ieee80211_channel *channel; 641 struct sta_info *sta; 642 struct ieee80211_local *local = sdata->local; 643 struct station_info sinfo; 644 struct survey_info survey; 645 int i, q; 646 #define STA_STATS_SURVEY_LEN 7 647 648 memset(data, 0, sizeof(u64) * STA_STATS_LEN); 649 650 #define ADD_STA_STATS(sta) \ 651 do { \ 652 data[i++] += sta->rx_packets; \ 653 data[i++] += sta->rx_bytes; \ 654 data[i++] += sta->wep_weak_iv_count; \ 655 data[i++] += sta->num_duplicates; \ 656 data[i++] += sta->rx_fragments; \ 657 data[i++] += sta->rx_dropped; \ 658 \ 659 data[i++] += sinfo.tx_packets; \ 660 data[i++] += sinfo.tx_bytes; \ 661 data[i++] += sta->tx_fragments; \ 662 data[i++] += sta->tx_filtered_count; \ 663 data[i++] += sta->tx_retry_failed; \ 664 data[i++] += sta->tx_retry_count; \ 665 data[i++] += sta->beacon_loss_count; \ 666 } while (0) 667 668 /* For Managed stations, find the single station based on BSSID 669 * and use that. For interface types, iterate through all available 670 * stations and add stats for any station that is assigned to this 671 * network device. 672 */ 673 674 mutex_lock(&local->sta_mtx); 675 676 if (sdata->vif.type == NL80211_IFTYPE_STATION) { 677 sta = sta_info_get_bss(sdata, sdata->u.mgd.bssid); 678 679 if (!(sta && !WARN_ON(sta->sdata->dev != dev))) 680 goto do_survey; 681 682 sinfo.filled = 0; 683 sta_set_sinfo(sta, &sinfo); 684 685 i = 0; 686 ADD_STA_STATS(sta); 687 688 data[i++] = sta->sta_state; 689 690 691 if (sinfo.filled & STATION_INFO_TX_BITRATE) 692 data[i] = 100000 * 693 cfg80211_calculate_bitrate(&sinfo.txrate); 694 i++; 695 if (sinfo.filled & STATION_INFO_RX_BITRATE) 696 data[i] = 100000 * 697 cfg80211_calculate_bitrate(&sinfo.rxrate); 698 i++; 699 700 if (sinfo.filled & STATION_INFO_SIGNAL_AVG) 701 data[i] = (u8)sinfo.signal_avg; 702 i++; 703 } else { 704 list_for_each_entry(sta, &local->sta_list, list) { 705 /* Make sure this station belongs to the proper dev */ 706 if (sta->sdata->dev != dev) 707 continue; 708 709 sinfo.filled = 0; 710 sta_set_sinfo(sta, &sinfo); 711 i = 0; 712 ADD_STA_STATS(sta); 713 } 714 } 715 716 do_survey: 717 i = STA_STATS_LEN - STA_STATS_SURVEY_LEN; 718 /* Get survey stats for current channel */ 719 survey.filled = 0; 720 721 rcu_read_lock(); 722 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); 723 if (chanctx_conf) 724 channel = chanctx_conf->def.chan; 725 else 726 channel = NULL; 727 rcu_read_unlock(); 728 729 if (channel) { 730 q = 0; 731 do { 732 survey.filled = 0; 733 if (drv_get_survey(local, q, &survey) != 0) { 734 survey.filled = 0; 735 break; 736 } 737 q++; 738 } while (channel != survey.channel); 739 } 740 741 if (survey.filled) 742 data[i++] = survey.channel->center_freq; 743 else 744 data[i++] = 0; 745 if (survey.filled & SURVEY_INFO_NOISE_DBM) 746 data[i++] = (u8)survey.noise; 747 else 748 data[i++] = -1LL; 749 if (survey.filled & SURVEY_INFO_CHANNEL_TIME) 750 data[i++] = survey.channel_time; 751 else 752 data[i++] = -1LL; 753 if (survey.filled & SURVEY_INFO_CHANNEL_TIME_BUSY) 754 data[i++] = survey.channel_time_busy; 755 else 756 data[i++] = -1LL; 757 if (survey.filled & SURVEY_INFO_CHANNEL_TIME_EXT_BUSY) 758 data[i++] = survey.channel_time_ext_busy; 759 else 760 data[i++] = -1LL; 761 if (survey.filled & SURVEY_INFO_CHANNEL_TIME_RX) 762 data[i++] = survey.channel_time_rx; 763 else 764 data[i++] = -1LL; 765 if (survey.filled & SURVEY_INFO_CHANNEL_TIME_TX) 766 data[i++] = survey.channel_time_tx; 767 else 768 data[i++] = -1LL; 769 770 mutex_unlock(&local->sta_mtx); 771 772 if (WARN_ON(i != STA_STATS_LEN)) 773 return; 774 775 drv_get_et_stats(sdata, stats, &(data[STA_STATS_LEN])); 776 } 777 778 static void ieee80211_get_et_strings(struct wiphy *wiphy, 779 struct net_device *dev, 780 u32 sset, u8 *data) 781 { 782 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 783 int sz_sta_stats = 0; 784 785 if (sset == ETH_SS_STATS) { 786 sz_sta_stats = sizeof(ieee80211_gstrings_sta_stats); 787 memcpy(data, ieee80211_gstrings_sta_stats, sz_sta_stats); 788 } 789 drv_get_et_strings(sdata, sset, &(data[sz_sta_stats])); 790 } 791 792 static int ieee80211_dump_station(struct wiphy *wiphy, struct net_device *dev, 793 int idx, u8 *mac, struct station_info *sinfo) 794 { 795 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 796 struct ieee80211_local *local = sdata->local; 797 struct sta_info *sta; 798 int ret = -ENOENT; 799 800 mutex_lock(&local->sta_mtx); 801 802 sta = sta_info_get_by_idx(sdata, idx); 803 if (sta) { 804 ret = 0; 805 memcpy(mac, sta->sta.addr, ETH_ALEN); 806 sta_set_sinfo(sta, sinfo); 807 } 808 809 mutex_unlock(&local->sta_mtx); 810 811 return ret; 812 } 813 814 static int ieee80211_dump_survey(struct wiphy *wiphy, struct net_device *dev, 815 int idx, struct survey_info *survey) 816 { 817 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); 818 819 return drv_get_survey(local, idx, survey); 820 } 821 822 static int ieee80211_get_station(struct wiphy *wiphy, struct net_device *dev, 823 const u8 *mac, struct station_info *sinfo) 824 { 825 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 826 struct ieee80211_local *local = sdata->local; 827 struct sta_info *sta; 828 int ret = -ENOENT; 829 830 mutex_lock(&local->sta_mtx); 831 832 sta = sta_info_get_bss(sdata, mac); 833 if (sta) { 834 ret = 0; 835 sta_set_sinfo(sta, sinfo); 836 } 837 838 mutex_unlock(&local->sta_mtx); 839 840 return ret; 841 } 842 843 static int ieee80211_set_monitor_channel(struct wiphy *wiphy, 844 struct cfg80211_chan_def *chandef) 845 { 846 struct ieee80211_local *local = wiphy_priv(wiphy); 847 struct ieee80211_sub_if_data *sdata; 848 int ret = 0; 849 850 if (cfg80211_chandef_identical(&local->monitor_chandef, chandef)) 851 return 0; 852 853 mutex_lock(&local->mtx); 854 mutex_lock(&local->iflist_mtx); 855 if (local->use_chanctx) { 856 sdata = rcu_dereference_protected( 857 local->monitor_sdata, 858 lockdep_is_held(&local->iflist_mtx)); 859 if (sdata) { 860 ieee80211_vif_release_channel(sdata); 861 ret = ieee80211_vif_use_channel(sdata, chandef, 862 IEEE80211_CHANCTX_EXCLUSIVE); 863 } 864 } else if (local->open_count == local->monitors) { 865 local->_oper_chandef = *chandef; 866 ieee80211_hw_config(local, 0); 867 } 868 869 if (ret == 0) 870 local->monitor_chandef = *chandef; 871 mutex_unlock(&local->iflist_mtx); 872 mutex_unlock(&local->mtx); 873 874 return ret; 875 } 876 877 static int ieee80211_set_probe_resp(struct ieee80211_sub_if_data *sdata, 878 const u8 *resp, size_t resp_len) 879 { 880 struct probe_resp *new, *old; 881 882 if (!resp || !resp_len) 883 return 1; 884 885 old = sdata_dereference(sdata->u.ap.probe_resp, sdata); 886 887 new = kzalloc(sizeof(struct probe_resp) + resp_len, GFP_KERNEL); 888 if (!new) 889 return -ENOMEM; 890 891 new->len = resp_len; 892 memcpy(new->data, resp, resp_len); 893 894 rcu_assign_pointer(sdata->u.ap.probe_resp, new); 895 if (old) 896 kfree_rcu(old, rcu_head); 897 898 return 0; 899 } 900 901 static int ieee80211_assign_beacon(struct ieee80211_sub_if_data *sdata, 902 struct cfg80211_beacon_data *params) 903 { 904 struct beacon_data *new, *old; 905 int new_head_len, new_tail_len; 906 int size, err; 907 u32 changed = BSS_CHANGED_BEACON; 908 909 old = sdata_dereference(sdata->u.ap.beacon, sdata); 910 911 912 /* Need to have a beacon head if we don't have one yet */ 913 if (!params->head && !old) 914 return -EINVAL; 915 916 /* new or old head? */ 917 if (params->head) 918 new_head_len = params->head_len; 919 else 920 new_head_len = old->head_len; 921 922 /* new or old tail? */ 923 if (params->tail || !old) 924 /* params->tail_len will be zero for !params->tail */ 925 new_tail_len = params->tail_len; 926 else 927 new_tail_len = old->tail_len; 928 929 size = sizeof(*new) + new_head_len + new_tail_len; 930 931 new = kzalloc(size, GFP_KERNEL); 932 if (!new) 933 return -ENOMEM; 934 935 /* start filling the new info now */ 936 937 /* 938 * pointers go into the block we allocated, 939 * memory is | beacon_data | head | tail | 940 */ 941 new->head = ((u8 *) new) + sizeof(*new); 942 new->tail = new->head + new_head_len; 943 new->head_len = new_head_len; 944 new->tail_len = new_tail_len; 945 946 /* copy in head */ 947 if (params->head) 948 memcpy(new->head, params->head, new_head_len); 949 else 950 memcpy(new->head, old->head, new_head_len); 951 952 /* copy in optional tail */ 953 if (params->tail) 954 memcpy(new->tail, params->tail, new_tail_len); 955 else 956 if (old) 957 memcpy(new->tail, old->tail, new_tail_len); 958 959 err = ieee80211_set_probe_resp(sdata, params->probe_resp, 960 params->probe_resp_len); 961 if (err < 0) 962 return err; 963 if (err == 0) 964 changed |= BSS_CHANGED_AP_PROBE_RESP; 965 966 rcu_assign_pointer(sdata->u.ap.beacon, new); 967 968 if (old) 969 kfree_rcu(old, rcu_head); 970 971 return changed; 972 } 973 974 static int ieee80211_start_ap(struct wiphy *wiphy, struct net_device *dev, 975 struct cfg80211_ap_settings *params) 976 { 977 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 978 struct ieee80211_local *local = sdata->local; 979 struct beacon_data *old; 980 struct ieee80211_sub_if_data *vlan; 981 u32 changed = BSS_CHANGED_BEACON_INT | 982 BSS_CHANGED_BEACON_ENABLED | 983 BSS_CHANGED_BEACON | 984 BSS_CHANGED_SSID | 985 BSS_CHANGED_P2P_PS; 986 int err; 987 988 old = sdata_dereference(sdata->u.ap.beacon, sdata); 989 if (old) 990 return -EALREADY; 991 992 /* TODO: make hostapd tell us what it wants */ 993 sdata->smps_mode = IEEE80211_SMPS_OFF; 994 sdata->needed_rx_chains = sdata->local->rx_chains; 995 996 mutex_lock(&local->mtx); 997 err = ieee80211_vif_use_channel(sdata, ¶ms->chandef, 998 IEEE80211_CHANCTX_SHARED); 999 if (!err) 1000 ieee80211_vif_copy_chanctx_to_vlans(sdata, false); 1001 mutex_unlock(&local->mtx); 1002 if (err) 1003 return err; 1004 1005 /* 1006 * Apply control port protocol, this allows us to 1007 * not encrypt dynamic WEP control frames. 1008 */ 1009 sdata->control_port_protocol = params->crypto.control_port_ethertype; 1010 sdata->control_port_no_encrypt = params->crypto.control_port_no_encrypt; 1011 sdata->encrypt_headroom = ieee80211_cs_headroom(sdata->local, 1012 ¶ms->crypto, 1013 sdata->vif.type); 1014 1015 list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) { 1016 vlan->control_port_protocol = 1017 params->crypto.control_port_ethertype; 1018 vlan->control_port_no_encrypt = 1019 params->crypto.control_port_no_encrypt; 1020 vlan->encrypt_headroom = 1021 ieee80211_cs_headroom(sdata->local, 1022 ¶ms->crypto, 1023 vlan->vif.type); 1024 } 1025 1026 sdata->vif.bss_conf.beacon_int = params->beacon_interval; 1027 sdata->vif.bss_conf.dtim_period = params->dtim_period; 1028 sdata->vif.bss_conf.enable_beacon = true; 1029 1030 sdata->vif.bss_conf.ssid_len = params->ssid_len; 1031 if (params->ssid_len) 1032 memcpy(sdata->vif.bss_conf.ssid, params->ssid, 1033 params->ssid_len); 1034 sdata->vif.bss_conf.hidden_ssid = 1035 (params->hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE); 1036 1037 memset(&sdata->vif.bss_conf.p2p_noa_attr, 0, 1038 sizeof(sdata->vif.bss_conf.p2p_noa_attr)); 1039 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow = 1040 params->p2p_ctwindow & IEEE80211_P2P_OPPPS_CTWINDOW_MASK; 1041 if (params->p2p_opp_ps) 1042 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |= 1043 IEEE80211_P2P_OPPPS_ENABLE_BIT; 1044 1045 err = ieee80211_assign_beacon(sdata, ¶ms->beacon); 1046 if (err < 0) { 1047 ieee80211_vif_release_channel(sdata); 1048 return err; 1049 } 1050 changed |= err; 1051 1052 err = drv_start_ap(sdata->local, sdata); 1053 if (err) { 1054 old = sdata_dereference(sdata->u.ap.beacon, sdata); 1055 1056 if (old) 1057 kfree_rcu(old, rcu_head); 1058 RCU_INIT_POINTER(sdata->u.ap.beacon, NULL); 1059 ieee80211_vif_release_channel(sdata); 1060 return err; 1061 } 1062 1063 ieee80211_recalc_dtim(local, sdata); 1064 ieee80211_bss_info_change_notify(sdata, changed); 1065 1066 netif_carrier_on(dev); 1067 list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) 1068 netif_carrier_on(vlan->dev); 1069 1070 return 0; 1071 } 1072 1073 static int ieee80211_change_beacon(struct wiphy *wiphy, struct net_device *dev, 1074 struct cfg80211_beacon_data *params) 1075 { 1076 struct ieee80211_sub_if_data *sdata; 1077 struct beacon_data *old; 1078 int err; 1079 1080 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1081 sdata_assert_lock(sdata); 1082 1083 /* don't allow changing the beacon while CSA is in place - offset 1084 * of channel switch counter may change 1085 */ 1086 if (sdata->vif.csa_active) 1087 return -EBUSY; 1088 1089 old = sdata_dereference(sdata->u.ap.beacon, sdata); 1090 if (!old) 1091 return -ENOENT; 1092 1093 err = ieee80211_assign_beacon(sdata, params); 1094 if (err < 0) 1095 return err; 1096 ieee80211_bss_info_change_notify(sdata, err); 1097 return 0; 1098 } 1099 1100 bool ieee80211_csa_needs_block_tx(struct ieee80211_local *local) 1101 { 1102 struct ieee80211_sub_if_data *sdata; 1103 1104 lockdep_assert_held(&local->mtx); 1105 1106 rcu_read_lock(); 1107 list_for_each_entry_rcu(sdata, &local->interfaces, list) { 1108 if (!ieee80211_sdata_running(sdata)) 1109 continue; 1110 1111 if (!sdata->vif.csa_active) 1112 continue; 1113 1114 if (!sdata->csa_block_tx) 1115 continue; 1116 1117 rcu_read_unlock(); 1118 return true; 1119 } 1120 rcu_read_unlock(); 1121 1122 return false; 1123 } 1124 1125 static int ieee80211_stop_ap(struct wiphy *wiphy, struct net_device *dev) 1126 { 1127 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1128 struct ieee80211_sub_if_data *vlan; 1129 struct ieee80211_local *local = sdata->local; 1130 struct beacon_data *old_beacon; 1131 struct probe_resp *old_probe_resp; 1132 struct cfg80211_chan_def chandef; 1133 1134 sdata_assert_lock(sdata); 1135 1136 old_beacon = sdata_dereference(sdata->u.ap.beacon, sdata); 1137 if (!old_beacon) 1138 return -ENOENT; 1139 old_probe_resp = sdata_dereference(sdata->u.ap.probe_resp, sdata); 1140 1141 /* abort any running channel switch */ 1142 mutex_lock(&local->mtx); 1143 sdata->vif.csa_active = false; 1144 if (!ieee80211_csa_needs_block_tx(local)) 1145 ieee80211_wake_queues_by_reason(&local->hw, 1146 IEEE80211_MAX_QUEUE_MAP, 1147 IEEE80211_QUEUE_STOP_REASON_CSA); 1148 mutex_unlock(&local->mtx); 1149 1150 kfree(sdata->u.ap.next_beacon); 1151 sdata->u.ap.next_beacon = NULL; 1152 1153 /* turn off carrier for this interface and dependent VLANs */ 1154 list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) 1155 netif_carrier_off(vlan->dev); 1156 netif_carrier_off(dev); 1157 1158 /* remove beacon and probe response */ 1159 RCU_INIT_POINTER(sdata->u.ap.beacon, NULL); 1160 RCU_INIT_POINTER(sdata->u.ap.probe_resp, NULL); 1161 kfree_rcu(old_beacon, rcu_head); 1162 if (old_probe_resp) 1163 kfree_rcu(old_probe_resp, rcu_head); 1164 sdata->u.ap.driver_smps_mode = IEEE80211_SMPS_OFF; 1165 1166 __sta_info_flush(sdata, true); 1167 ieee80211_free_keys(sdata, true); 1168 1169 sdata->vif.bss_conf.enable_beacon = false; 1170 sdata->vif.bss_conf.ssid_len = 0; 1171 clear_bit(SDATA_STATE_OFFCHANNEL_BEACON_STOPPED, &sdata->state); 1172 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED); 1173 1174 if (sdata->wdev.cac_started) { 1175 chandef = sdata->vif.bss_conf.chandef; 1176 cancel_delayed_work_sync(&sdata->dfs_cac_timer_work); 1177 cfg80211_cac_event(sdata->dev, &chandef, 1178 NL80211_RADAR_CAC_ABORTED, 1179 GFP_KERNEL); 1180 } 1181 1182 drv_stop_ap(sdata->local, sdata); 1183 1184 /* free all potentially still buffered bcast frames */ 1185 local->total_ps_buffered -= skb_queue_len(&sdata->u.ap.ps.bc_buf); 1186 skb_queue_purge(&sdata->u.ap.ps.bc_buf); 1187 1188 mutex_lock(&local->mtx); 1189 ieee80211_vif_copy_chanctx_to_vlans(sdata, true); 1190 ieee80211_vif_release_channel(sdata); 1191 mutex_unlock(&local->mtx); 1192 1193 return 0; 1194 } 1195 1196 /* Layer 2 Update frame (802.2 Type 1 LLC XID Update response) */ 1197 struct iapp_layer2_update { 1198 u8 da[ETH_ALEN]; /* broadcast */ 1199 u8 sa[ETH_ALEN]; /* STA addr */ 1200 __be16 len; /* 6 */ 1201 u8 dsap; /* 0 */ 1202 u8 ssap; /* 0 */ 1203 u8 control; 1204 u8 xid_info[3]; 1205 } __packed; 1206 1207 static void ieee80211_send_layer2_update(struct sta_info *sta) 1208 { 1209 struct iapp_layer2_update *msg; 1210 struct sk_buff *skb; 1211 1212 /* Send Level 2 Update Frame to update forwarding tables in layer 2 1213 * bridge devices */ 1214 1215 skb = dev_alloc_skb(sizeof(*msg)); 1216 if (!skb) 1217 return; 1218 msg = (struct iapp_layer2_update *)skb_put(skb, sizeof(*msg)); 1219 1220 /* 802.2 Type 1 Logical Link Control (LLC) Exchange Identifier (XID) 1221 * Update response frame; IEEE Std 802.2-1998, 5.4.1.2.1 */ 1222 1223 eth_broadcast_addr(msg->da); 1224 memcpy(msg->sa, sta->sta.addr, ETH_ALEN); 1225 msg->len = htons(6); 1226 msg->dsap = 0; 1227 msg->ssap = 0x01; /* NULL LSAP, CR Bit: Response */ 1228 msg->control = 0xaf; /* XID response lsb.1111F101. 1229 * F=0 (no poll command; unsolicited frame) */ 1230 msg->xid_info[0] = 0x81; /* XID format identifier */ 1231 msg->xid_info[1] = 1; /* LLC types/classes: Type 1 LLC */ 1232 msg->xid_info[2] = 0; /* XID sender's receive window size (RW) */ 1233 1234 skb->dev = sta->sdata->dev; 1235 skb->protocol = eth_type_trans(skb, sta->sdata->dev); 1236 memset(skb->cb, 0, sizeof(skb->cb)); 1237 netif_rx_ni(skb); 1238 } 1239 1240 static int sta_apply_auth_flags(struct ieee80211_local *local, 1241 struct sta_info *sta, 1242 u32 mask, u32 set) 1243 { 1244 int ret; 1245 1246 if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED) && 1247 set & BIT(NL80211_STA_FLAG_AUTHENTICATED) && 1248 !test_sta_flag(sta, WLAN_STA_AUTH)) { 1249 ret = sta_info_move_state(sta, IEEE80211_STA_AUTH); 1250 if (ret) 1251 return ret; 1252 } 1253 1254 if (mask & BIT(NL80211_STA_FLAG_ASSOCIATED) && 1255 set & BIT(NL80211_STA_FLAG_ASSOCIATED) && 1256 !test_sta_flag(sta, WLAN_STA_ASSOC)) { 1257 ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC); 1258 if (ret) 1259 return ret; 1260 } 1261 1262 if (mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) { 1263 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED)) 1264 ret = sta_info_move_state(sta, IEEE80211_STA_AUTHORIZED); 1265 else if (test_sta_flag(sta, WLAN_STA_AUTHORIZED)) 1266 ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC); 1267 else 1268 ret = 0; 1269 if (ret) 1270 return ret; 1271 } 1272 1273 if (mask & BIT(NL80211_STA_FLAG_ASSOCIATED) && 1274 !(set & BIT(NL80211_STA_FLAG_ASSOCIATED)) && 1275 test_sta_flag(sta, WLAN_STA_ASSOC)) { 1276 ret = sta_info_move_state(sta, IEEE80211_STA_AUTH); 1277 if (ret) 1278 return ret; 1279 } 1280 1281 if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED) && 1282 !(set & BIT(NL80211_STA_FLAG_AUTHENTICATED)) && 1283 test_sta_flag(sta, WLAN_STA_AUTH)) { 1284 ret = sta_info_move_state(sta, IEEE80211_STA_NONE); 1285 if (ret) 1286 return ret; 1287 } 1288 1289 return 0; 1290 } 1291 1292 static int sta_apply_parameters(struct ieee80211_local *local, 1293 struct sta_info *sta, 1294 struct station_parameters *params) 1295 { 1296 int ret = 0; 1297 struct ieee80211_supported_band *sband; 1298 struct ieee80211_sub_if_data *sdata = sta->sdata; 1299 enum ieee80211_band band = ieee80211_get_sdata_band(sdata); 1300 u32 mask, set; 1301 1302 sband = local->hw.wiphy->bands[band]; 1303 1304 mask = params->sta_flags_mask; 1305 set = params->sta_flags_set; 1306 1307 if (ieee80211_vif_is_mesh(&sdata->vif)) { 1308 /* 1309 * In mesh mode, ASSOCIATED isn't part of the nl80211 1310 * API but must follow AUTHENTICATED for driver state. 1311 */ 1312 if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED)) 1313 mask |= BIT(NL80211_STA_FLAG_ASSOCIATED); 1314 if (set & BIT(NL80211_STA_FLAG_AUTHENTICATED)) 1315 set |= BIT(NL80211_STA_FLAG_ASSOCIATED); 1316 } else if (test_sta_flag(sta, WLAN_STA_TDLS_PEER)) { 1317 /* 1318 * TDLS -- everything follows authorized, but 1319 * only becoming authorized is possible, not 1320 * going back 1321 */ 1322 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED)) { 1323 set |= BIT(NL80211_STA_FLAG_AUTHENTICATED) | 1324 BIT(NL80211_STA_FLAG_ASSOCIATED); 1325 mask |= BIT(NL80211_STA_FLAG_AUTHENTICATED) | 1326 BIT(NL80211_STA_FLAG_ASSOCIATED); 1327 } 1328 } 1329 1330 ret = sta_apply_auth_flags(local, sta, mask, set); 1331 if (ret) 1332 return ret; 1333 1334 if (mask & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE)) { 1335 if (set & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE)) 1336 set_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE); 1337 else 1338 clear_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE); 1339 } 1340 1341 if (mask & BIT(NL80211_STA_FLAG_WME)) { 1342 if (set & BIT(NL80211_STA_FLAG_WME)) { 1343 set_sta_flag(sta, WLAN_STA_WME); 1344 sta->sta.wme = true; 1345 } else { 1346 clear_sta_flag(sta, WLAN_STA_WME); 1347 sta->sta.wme = false; 1348 } 1349 } 1350 1351 if (mask & BIT(NL80211_STA_FLAG_MFP)) { 1352 if (set & BIT(NL80211_STA_FLAG_MFP)) 1353 set_sta_flag(sta, WLAN_STA_MFP); 1354 else 1355 clear_sta_flag(sta, WLAN_STA_MFP); 1356 } 1357 1358 if (mask & BIT(NL80211_STA_FLAG_TDLS_PEER)) { 1359 if (set & BIT(NL80211_STA_FLAG_TDLS_PEER)) 1360 set_sta_flag(sta, WLAN_STA_TDLS_PEER); 1361 else 1362 clear_sta_flag(sta, WLAN_STA_TDLS_PEER); 1363 } 1364 1365 if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD) { 1366 sta->sta.uapsd_queues = params->uapsd_queues; 1367 sta->sta.max_sp = params->max_sp; 1368 } 1369 1370 /* 1371 * cfg80211 validates this (1-2007) and allows setting the AID 1372 * only when creating a new station entry 1373 */ 1374 if (params->aid) 1375 sta->sta.aid = params->aid; 1376 1377 /* 1378 * Some of the following updates would be racy if called on an 1379 * existing station, via ieee80211_change_station(). However, 1380 * all such changes are rejected by cfg80211 except for updates 1381 * changing the supported rates on an existing but not yet used 1382 * TDLS peer. 1383 */ 1384 1385 if (params->listen_interval >= 0) 1386 sta->listen_interval = params->listen_interval; 1387 1388 if (params->supported_rates) { 1389 ieee80211_parse_bitrates(&sdata->vif.bss_conf.chandef, 1390 sband, params->supported_rates, 1391 params->supported_rates_len, 1392 &sta->sta.supp_rates[band]); 1393 } 1394 1395 if (params->ht_capa) 1396 ieee80211_ht_cap_ie_to_sta_ht_cap(sdata, sband, 1397 params->ht_capa, sta); 1398 1399 if (params->vht_capa) 1400 ieee80211_vht_cap_ie_to_sta_vht_cap(sdata, sband, 1401 params->vht_capa, sta); 1402 1403 if (params->opmode_notif_used) { 1404 /* returned value is only needed for rc update, but the 1405 * rc isn't initialized here yet, so ignore it 1406 */ 1407 __ieee80211_vht_handle_opmode(sdata, sta, 1408 params->opmode_notif, 1409 band, false); 1410 } 1411 1412 if (ieee80211_vif_is_mesh(&sdata->vif)) { 1413 #ifdef CONFIG_MAC80211_MESH 1414 u32 changed = 0; 1415 1416 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE) { 1417 switch (params->plink_state) { 1418 case NL80211_PLINK_ESTAB: 1419 if (sta->plink_state != NL80211_PLINK_ESTAB) 1420 changed = mesh_plink_inc_estab_count( 1421 sdata); 1422 sta->plink_state = params->plink_state; 1423 1424 ieee80211_mps_sta_status_update(sta); 1425 changed |= ieee80211_mps_set_sta_local_pm(sta, 1426 sdata->u.mesh.mshcfg.power_mode); 1427 break; 1428 case NL80211_PLINK_LISTEN: 1429 case NL80211_PLINK_BLOCKED: 1430 case NL80211_PLINK_OPN_SNT: 1431 case NL80211_PLINK_OPN_RCVD: 1432 case NL80211_PLINK_CNF_RCVD: 1433 case NL80211_PLINK_HOLDING: 1434 if (sta->plink_state == NL80211_PLINK_ESTAB) 1435 changed = mesh_plink_dec_estab_count( 1436 sdata); 1437 sta->plink_state = params->plink_state; 1438 1439 ieee80211_mps_sta_status_update(sta); 1440 changed |= ieee80211_mps_set_sta_local_pm(sta, 1441 NL80211_MESH_POWER_UNKNOWN); 1442 break; 1443 default: 1444 /* nothing */ 1445 break; 1446 } 1447 } 1448 1449 switch (params->plink_action) { 1450 case NL80211_PLINK_ACTION_NO_ACTION: 1451 /* nothing */ 1452 break; 1453 case NL80211_PLINK_ACTION_OPEN: 1454 changed |= mesh_plink_open(sta); 1455 break; 1456 case NL80211_PLINK_ACTION_BLOCK: 1457 changed |= mesh_plink_block(sta); 1458 break; 1459 } 1460 1461 if (params->local_pm) 1462 changed |= 1463 ieee80211_mps_set_sta_local_pm(sta, 1464 params->local_pm); 1465 ieee80211_mbss_info_change_notify(sdata, changed); 1466 #endif 1467 } 1468 1469 return 0; 1470 } 1471 1472 static int ieee80211_add_station(struct wiphy *wiphy, struct net_device *dev, 1473 const u8 *mac, 1474 struct station_parameters *params) 1475 { 1476 struct ieee80211_local *local = wiphy_priv(wiphy); 1477 struct sta_info *sta; 1478 struct ieee80211_sub_if_data *sdata; 1479 int err; 1480 int layer2_update; 1481 1482 if (params->vlan) { 1483 sdata = IEEE80211_DEV_TO_SUB_IF(params->vlan); 1484 1485 if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN && 1486 sdata->vif.type != NL80211_IFTYPE_AP) 1487 return -EINVAL; 1488 } else 1489 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1490 1491 if (ether_addr_equal(mac, sdata->vif.addr)) 1492 return -EINVAL; 1493 1494 if (is_multicast_ether_addr(mac)) 1495 return -EINVAL; 1496 1497 sta = sta_info_alloc(sdata, mac, GFP_KERNEL); 1498 if (!sta) 1499 return -ENOMEM; 1500 1501 /* 1502 * defaults -- if userspace wants something else we'll 1503 * change it accordingly in sta_apply_parameters() 1504 */ 1505 if (!(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))) { 1506 sta_info_pre_move_state(sta, IEEE80211_STA_AUTH); 1507 sta_info_pre_move_state(sta, IEEE80211_STA_ASSOC); 1508 } else { 1509 sta->sta.tdls = true; 1510 } 1511 1512 err = sta_apply_parameters(local, sta, params); 1513 if (err) { 1514 sta_info_free(local, sta); 1515 return err; 1516 } 1517 1518 /* 1519 * for TDLS, rate control should be initialized only when 1520 * rates are known and station is marked authorized 1521 */ 1522 if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER)) 1523 rate_control_rate_init(sta); 1524 1525 layer2_update = sdata->vif.type == NL80211_IFTYPE_AP_VLAN || 1526 sdata->vif.type == NL80211_IFTYPE_AP; 1527 1528 err = sta_info_insert_rcu(sta); 1529 if (err) { 1530 rcu_read_unlock(); 1531 return err; 1532 } 1533 1534 if (layer2_update) 1535 ieee80211_send_layer2_update(sta); 1536 1537 rcu_read_unlock(); 1538 1539 return 0; 1540 } 1541 1542 static int ieee80211_del_station(struct wiphy *wiphy, struct net_device *dev, 1543 const u8 *mac) 1544 { 1545 struct ieee80211_sub_if_data *sdata; 1546 1547 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1548 1549 if (mac) 1550 return sta_info_destroy_addr_bss(sdata, mac); 1551 1552 sta_info_flush(sdata); 1553 return 0; 1554 } 1555 1556 static int ieee80211_change_station(struct wiphy *wiphy, 1557 struct net_device *dev, const u8 *mac, 1558 struct station_parameters *params) 1559 { 1560 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1561 struct ieee80211_local *local = wiphy_priv(wiphy); 1562 struct sta_info *sta; 1563 struct ieee80211_sub_if_data *vlansdata; 1564 enum cfg80211_station_type statype; 1565 int err; 1566 1567 mutex_lock(&local->sta_mtx); 1568 1569 sta = sta_info_get_bss(sdata, mac); 1570 if (!sta) { 1571 err = -ENOENT; 1572 goto out_err; 1573 } 1574 1575 switch (sdata->vif.type) { 1576 case NL80211_IFTYPE_MESH_POINT: 1577 if (sdata->u.mesh.user_mpm) 1578 statype = CFG80211_STA_MESH_PEER_USER; 1579 else 1580 statype = CFG80211_STA_MESH_PEER_KERNEL; 1581 break; 1582 case NL80211_IFTYPE_ADHOC: 1583 statype = CFG80211_STA_IBSS; 1584 break; 1585 case NL80211_IFTYPE_STATION: 1586 if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER)) { 1587 statype = CFG80211_STA_AP_STA; 1588 break; 1589 } 1590 if (test_sta_flag(sta, WLAN_STA_AUTHORIZED)) 1591 statype = CFG80211_STA_TDLS_PEER_ACTIVE; 1592 else 1593 statype = CFG80211_STA_TDLS_PEER_SETUP; 1594 break; 1595 case NL80211_IFTYPE_AP: 1596 case NL80211_IFTYPE_AP_VLAN: 1597 statype = CFG80211_STA_AP_CLIENT; 1598 break; 1599 default: 1600 err = -EOPNOTSUPP; 1601 goto out_err; 1602 } 1603 1604 err = cfg80211_check_station_change(wiphy, params, statype); 1605 if (err) 1606 goto out_err; 1607 1608 if (params->vlan && params->vlan != sta->sdata->dev) { 1609 bool prev_4addr = false; 1610 bool new_4addr = false; 1611 1612 vlansdata = IEEE80211_DEV_TO_SUB_IF(params->vlan); 1613 1614 if (params->vlan->ieee80211_ptr->use_4addr) { 1615 if (vlansdata->u.vlan.sta) { 1616 err = -EBUSY; 1617 goto out_err; 1618 } 1619 1620 rcu_assign_pointer(vlansdata->u.vlan.sta, sta); 1621 new_4addr = true; 1622 } 1623 1624 if (sta->sdata->vif.type == NL80211_IFTYPE_AP_VLAN && 1625 sta->sdata->u.vlan.sta) { 1626 RCU_INIT_POINTER(sta->sdata->u.vlan.sta, NULL); 1627 prev_4addr = true; 1628 } 1629 1630 sta->sdata = vlansdata; 1631 1632 if (sta->sta_state == IEEE80211_STA_AUTHORIZED && 1633 prev_4addr != new_4addr) { 1634 if (new_4addr) 1635 atomic_dec(&sta->sdata->bss->num_mcast_sta); 1636 else 1637 atomic_inc(&sta->sdata->bss->num_mcast_sta); 1638 } 1639 1640 ieee80211_send_layer2_update(sta); 1641 } 1642 1643 err = sta_apply_parameters(local, sta, params); 1644 if (err) 1645 goto out_err; 1646 1647 /* When peer becomes authorized, init rate control as well */ 1648 if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) && 1649 test_sta_flag(sta, WLAN_STA_AUTHORIZED)) 1650 rate_control_rate_init(sta); 1651 1652 mutex_unlock(&local->sta_mtx); 1653 1654 if ((sdata->vif.type == NL80211_IFTYPE_AP || 1655 sdata->vif.type == NL80211_IFTYPE_AP_VLAN) && 1656 sta->known_smps_mode != sta->sdata->bss->req_smps && 1657 test_sta_flag(sta, WLAN_STA_AUTHORIZED) && 1658 sta_info_tx_streams(sta) != 1) { 1659 ht_dbg(sta->sdata, 1660 "%pM just authorized and MIMO capable - update SMPS\n", 1661 sta->sta.addr); 1662 ieee80211_send_smps_action(sta->sdata, 1663 sta->sdata->bss->req_smps, 1664 sta->sta.addr, 1665 sta->sdata->vif.bss_conf.bssid); 1666 } 1667 1668 if (sdata->vif.type == NL80211_IFTYPE_STATION && 1669 params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) { 1670 ieee80211_recalc_ps(local, -1); 1671 ieee80211_recalc_ps_vif(sdata); 1672 } 1673 1674 return 0; 1675 out_err: 1676 mutex_unlock(&local->sta_mtx); 1677 return err; 1678 } 1679 1680 #ifdef CONFIG_MAC80211_MESH 1681 static int ieee80211_add_mpath(struct wiphy *wiphy, struct net_device *dev, 1682 const u8 *dst, const u8 *next_hop) 1683 { 1684 struct ieee80211_sub_if_data *sdata; 1685 struct mesh_path *mpath; 1686 struct sta_info *sta; 1687 1688 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1689 1690 rcu_read_lock(); 1691 sta = sta_info_get(sdata, next_hop); 1692 if (!sta) { 1693 rcu_read_unlock(); 1694 return -ENOENT; 1695 } 1696 1697 mpath = mesh_path_add(sdata, dst); 1698 if (IS_ERR(mpath)) { 1699 rcu_read_unlock(); 1700 return PTR_ERR(mpath); 1701 } 1702 1703 mesh_path_fix_nexthop(mpath, sta); 1704 1705 rcu_read_unlock(); 1706 return 0; 1707 } 1708 1709 static int ieee80211_del_mpath(struct wiphy *wiphy, struct net_device *dev, 1710 const u8 *dst) 1711 { 1712 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1713 1714 if (dst) 1715 return mesh_path_del(sdata, dst); 1716 1717 mesh_path_flush_by_iface(sdata); 1718 return 0; 1719 } 1720 1721 static int ieee80211_change_mpath(struct wiphy *wiphy, struct net_device *dev, 1722 const u8 *dst, const u8 *next_hop) 1723 { 1724 struct ieee80211_sub_if_data *sdata; 1725 struct mesh_path *mpath; 1726 struct sta_info *sta; 1727 1728 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1729 1730 rcu_read_lock(); 1731 1732 sta = sta_info_get(sdata, next_hop); 1733 if (!sta) { 1734 rcu_read_unlock(); 1735 return -ENOENT; 1736 } 1737 1738 mpath = mesh_path_lookup(sdata, dst); 1739 if (!mpath) { 1740 rcu_read_unlock(); 1741 return -ENOENT; 1742 } 1743 1744 mesh_path_fix_nexthop(mpath, sta); 1745 1746 rcu_read_unlock(); 1747 return 0; 1748 } 1749 1750 static void mpath_set_pinfo(struct mesh_path *mpath, u8 *next_hop, 1751 struct mpath_info *pinfo) 1752 { 1753 struct sta_info *next_hop_sta = rcu_dereference(mpath->next_hop); 1754 1755 if (next_hop_sta) 1756 memcpy(next_hop, next_hop_sta->sta.addr, ETH_ALEN); 1757 else 1758 memset(next_hop, 0, ETH_ALEN); 1759 1760 memset(pinfo, 0, sizeof(*pinfo)); 1761 1762 pinfo->generation = mesh_paths_generation; 1763 1764 pinfo->filled = MPATH_INFO_FRAME_QLEN | 1765 MPATH_INFO_SN | 1766 MPATH_INFO_METRIC | 1767 MPATH_INFO_EXPTIME | 1768 MPATH_INFO_DISCOVERY_TIMEOUT | 1769 MPATH_INFO_DISCOVERY_RETRIES | 1770 MPATH_INFO_FLAGS; 1771 1772 pinfo->frame_qlen = mpath->frame_queue.qlen; 1773 pinfo->sn = mpath->sn; 1774 pinfo->metric = mpath->metric; 1775 if (time_before(jiffies, mpath->exp_time)) 1776 pinfo->exptime = jiffies_to_msecs(mpath->exp_time - jiffies); 1777 pinfo->discovery_timeout = 1778 jiffies_to_msecs(mpath->discovery_timeout); 1779 pinfo->discovery_retries = mpath->discovery_retries; 1780 if (mpath->flags & MESH_PATH_ACTIVE) 1781 pinfo->flags |= NL80211_MPATH_FLAG_ACTIVE; 1782 if (mpath->flags & MESH_PATH_RESOLVING) 1783 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING; 1784 if (mpath->flags & MESH_PATH_SN_VALID) 1785 pinfo->flags |= NL80211_MPATH_FLAG_SN_VALID; 1786 if (mpath->flags & MESH_PATH_FIXED) 1787 pinfo->flags |= NL80211_MPATH_FLAG_FIXED; 1788 if (mpath->flags & MESH_PATH_RESOLVED) 1789 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVED; 1790 } 1791 1792 static int ieee80211_get_mpath(struct wiphy *wiphy, struct net_device *dev, 1793 u8 *dst, u8 *next_hop, struct mpath_info *pinfo) 1794 1795 { 1796 struct ieee80211_sub_if_data *sdata; 1797 struct mesh_path *mpath; 1798 1799 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1800 1801 rcu_read_lock(); 1802 mpath = mesh_path_lookup(sdata, dst); 1803 if (!mpath) { 1804 rcu_read_unlock(); 1805 return -ENOENT; 1806 } 1807 memcpy(dst, mpath->dst, ETH_ALEN); 1808 mpath_set_pinfo(mpath, next_hop, pinfo); 1809 rcu_read_unlock(); 1810 return 0; 1811 } 1812 1813 static int ieee80211_dump_mpath(struct wiphy *wiphy, struct net_device *dev, 1814 int idx, u8 *dst, u8 *next_hop, 1815 struct mpath_info *pinfo) 1816 { 1817 struct ieee80211_sub_if_data *sdata; 1818 struct mesh_path *mpath; 1819 1820 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1821 1822 rcu_read_lock(); 1823 mpath = mesh_path_lookup_by_idx(sdata, idx); 1824 if (!mpath) { 1825 rcu_read_unlock(); 1826 return -ENOENT; 1827 } 1828 memcpy(dst, mpath->dst, ETH_ALEN); 1829 mpath_set_pinfo(mpath, next_hop, pinfo); 1830 rcu_read_unlock(); 1831 return 0; 1832 } 1833 1834 static int ieee80211_get_mesh_config(struct wiphy *wiphy, 1835 struct net_device *dev, 1836 struct mesh_config *conf) 1837 { 1838 struct ieee80211_sub_if_data *sdata; 1839 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1840 1841 memcpy(conf, &(sdata->u.mesh.mshcfg), sizeof(struct mesh_config)); 1842 return 0; 1843 } 1844 1845 static inline bool _chg_mesh_attr(enum nl80211_meshconf_params parm, u32 mask) 1846 { 1847 return (mask >> (parm-1)) & 0x1; 1848 } 1849 1850 static int copy_mesh_setup(struct ieee80211_if_mesh *ifmsh, 1851 const struct mesh_setup *setup) 1852 { 1853 u8 *new_ie; 1854 const u8 *old_ie; 1855 struct ieee80211_sub_if_data *sdata = container_of(ifmsh, 1856 struct ieee80211_sub_if_data, u.mesh); 1857 1858 /* allocate information elements */ 1859 new_ie = NULL; 1860 old_ie = ifmsh->ie; 1861 1862 if (setup->ie_len) { 1863 new_ie = kmemdup(setup->ie, setup->ie_len, 1864 GFP_KERNEL); 1865 if (!new_ie) 1866 return -ENOMEM; 1867 } 1868 ifmsh->ie_len = setup->ie_len; 1869 ifmsh->ie = new_ie; 1870 kfree(old_ie); 1871 1872 /* now copy the rest of the setup parameters */ 1873 ifmsh->mesh_id_len = setup->mesh_id_len; 1874 memcpy(ifmsh->mesh_id, setup->mesh_id, ifmsh->mesh_id_len); 1875 ifmsh->mesh_sp_id = setup->sync_method; 1876 ifmsh->mesh_pp_id = setup->path_sel_proto; 1877 ifmsh->mesh_pm_id = setup->path_metric; 1878 ifmsh->user_mpm = setup->user_mpm; 1879 ifmsh->mesh_auth_id = setup->auth_id; 1880 ifmsh->security = IEEE80211_MESH_SEC_NONE; 1881 if (setup->is_authenticated) 1882 ifmsh->security |= IEEE80211_MESH_SEC_AUTHED; 1883 if (setup->is_secure) 1884 ifmsh->security |= IEEE80211_MESH_SEC_SECURED; 1885 1886 /* mcast rate setting in Mesh Node */ 1887 memcpy(sdata->vif.bss_conf.mcast_rate, setup->mcast_rate, 1888 sizeof(setup->mcast_rate)); 1889 sdata->vif.bss_conf.basic_rates = setup->basic_rates; 1890 1891 sdata->vif.bss_conf.beacon_int = setup->beacon_interval; 1892 sdata->vif.bss_conf.dtim_period = setup->dtim_period; 1893 1894 return 0; 1895 } 1896 1897 static int ieee80211_update_mesh_config(struct wiphy *wiphy, 1898 struct net_device *dev, u32 mask, 1899 const struct mesh_config *nconf) 1900 { 1901 struct mesh_config *conf; 1902 struct ieee80211_sub_if_data *sdata; 1903 struct ieee80211_if_mesh *ifmsh; 1904 1905 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1906 ifmsh = &sdata->u.mesh; 1907 1908 /* Set the config options which we are interested in setting */ 1909 conf = &(sdata->u.mesh.mshcfg); 1910 if (_chg_mesh_attr(NL80211_MESHCONF_RETRY_TIMEOUT, mask)) 1911 conf->dot11MeshRetryTimeout = nconf->dot11MeshRetryTimeout; 1912 if (_chg_mesh_attr(NL80211_MESHCONF_CONFIRM_TIMEOUT, mask)) 1913 conf->dot11MeshConfirmTimeout = nconf->dot11MeshConfirmTimeout; 1914 if (_chg_mesh_attr(NL80211_MESHCONF_HOLDING_TIMEOUT, mask)) 1915 conf->dot11MeshHoldingTimeout = nconf->dot11MeshHoldingTimeout; 1916 if (_chg_mesh_attr(NL80211_MESHCONF_MAX_PEER_LINKS, mask)) 1917 conf->dot11MeshMaxPeerLinks = nconf->dot11MeshMaxPeerLinks; 1918 if (_chg_mesh_attr(NL80211_MESHCONF_MAX_RETRIES, mask)) 1919 conf->dot11MeshMaxRetries = nconf->dot11MeshMaxRetries; 1920 if (_chg_mesh_attr(NL80211_MESHCONF_TTL, mask)) 1921 conf->dot11MeshTTL = nconf->dot11MeshTTL; 1922 if (_chg_mesh_attr(NL80211_MESHCONF_ELEMENT_TTL, mask)) 1923 conf->element_ttl = nconf->element_ttl; 1924 if (_chg_mesh_attr(NL80211_MESHCONF_AUTO_OPEN_PLINKS, mask)) { 1925 if (ifmsh->user_mpm) 1926 return -EBUSY; 1927 conf->auto_open_plinks = nconf->auto_open_plinks; 1928 } 1929 if (_chg_mesh_attr(NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR, mask)) 1930 conf->dot11MeshNbrOffsetMaxNeighbor = 1931 nconf->dot11MeshNbrOffsetMaxNeighbor; 1932 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES, mask)) 1933 conf->dot11MeshHWMPmaxPREQretries = 1934 nconf->dot11MeshHWMPmaxPREQretries; 1935 if (_chg_mesh_attr(NL80211_MESHCONF_PATH_REFRESH_TIME, mask)) 1936 conf->path_refresh_time = nconf->path_refresh_time; 1937 if (_chg_mesh_attr(NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT, mask)) 1938 conf->min_discovery_timeout = nconf->min_discovery_timeout; 1939 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT, mask)) 1940 conf->dot11MeshHWMPactivePathTimeout = 1941 nconf->dot11MeshHWMPactivePathTimeout; 1942 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL, mask)) 1943 conf->dot11MeshHWMPpreqMinInterval = 1944 nconf->dot11MeshHWMPpreqMinInterval; 1945 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL, mask)) 1946 conf->dot11MeshHWMPperrMinInterval = 1947 nconf->dot11MeshHWMPperrMinInterval; 1948 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME, 1949 mask)) 1950 conf->dot11MeshHWMPnetDiameterTraversalTime = 1951 nconf->dot11MeshHWMPnetDiameterTraversalTime; 1952 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOTMODE, mask)) { 1953 conf->dot11MeshHWMPRootMode = nconf->dot11MeshHWMPRootMode; 1954 ieee80211_mesh_root_setup(ifmsh); 1955 } 1956 if (_chg_mesh_attr(NL80211_MESHCONF_GATE_ANNOUNCEMENTS, mask)) { 1957 /* our current gate announcement implementation rides on root 1958 * announcements, so require this ifmsh to also be a root node 1959 * */ 1960 if (nconf->dot11MeshGateAnnouncementProtocol && 1961 !(conf->dot11MeshHWMPRootMode > IEEE80211_ROOTMODE_ROOT)) { 1962 conf->dot11MeshHWMPRootMode = IEEE80211_PROACTIVE_RANN; 1963 ieee80211_mesh_root_setup(ifmsh); 1964 } 1965 conf->dot11MeshGateAnnouncementProtocol = 1966 nconf->dot11MeshGateAnnouncementProtocol; 1967 } 1968 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_RANN_INTERVAL, mask)) 1969 conf->dot11MeshHWMPRannInterval = 1970 nconf->dot11MeshHWMPRannInterval; 1971 if (_chg_mesh_attr(NL80211_MESHCONF_FORWARDING, mask)) 1972 conf->dot11MeshForwarding = nconf->dot11MeshForwarding; 1973 if (_chg_mesh_attr(NL80211_MESHCONF_RSSI_THRESHOLD, mask)) { 1974 /* our RSSI threshold implementation is supported only for 1975 * devices that report signal in dBm. 1976 */ 1977 if (!(sdata->local->hw.flags & IEEE80211_HW_SIGNAL_DBM)) 1978 return -ENOTSUPP; 1979 conf->rssi_threshold = nconf->rssi_threshold; 1980 } 1981 if (_chg_mesh_attr(NL80211_MESHCONF_HT_OPMODE, mask)) { 1982 conf->ht_opmode = nconf->ht_opmode; 1983 sdata->vif.bss_conf.ht_operation_mode = nconf->ht_opmode; 1984 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_HT); 1985 } 1986 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT, mask)) 1987 conf->dot11MeshHWMPactivePathToRootTimeout = 1988 nconf->dot11MeshHWMPactivePathToRootTimeout; 1989 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOT_INTERVAL, mask)) 1990 conf->dot11MeshHWMProotInterval = 1991 nconf->dot11MeshHWMProotInterval; 1992 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL, mask)) 1993 conf->dot11MeshHWMPconfirmationInterval = 1994 nconf->dot11MeshHWMPconfirmationInterval; 1995 if (_chg_mesh_attr(NL80211_MESHCONF_POWER_MODE, mask)) { 1996 conf->power_mode = nconf->power_mode; 1997 ieee80211_mps_local_status_update(sdata); 1998 } 1999 if (_chg_mesh_attr(NL80211_MESHCONF_AWAKE_WINDOW, mask)) 2000 conf->dot11MeshAwakeWindowDuration = 2001 nconf->dot11MeshAwakeWindowDuration; 2002 if (_chg_mesh_attr(NL80211_MESHCONF_PLINK_TIMEOUT, mask)) 2003 conf->plink_timeout = nconf->plink_timeout; 2004 ieee80211_mbss_info_change_notify(sdata, BSS_CHANGED_BEACON); 2005 return 0; 2006 } 2007 2008 static int ieee80211_join_mesh(struct wiphy *wiphy, struct net_device *dev, 2009 const struct mesh_config *conf, 2010 const struct mesh_setup *setup) 2011 { 2012 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2013 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh; 2014 int err; 2015 2016 memcpy(&ifmsh->mshcfg, conf, sizeof(struct mesh_config)); 2017 err = copy_mesh_setup(ifmsh, setup); 2018 if (err) 2019 return err; 2020 2021 /* can mesh use other SMPS modes? */ 2022 sdata->smps_mode = IEEE80211_SMPS_OFF; 2023 sdata->needed_rx_chains = sdata->local->rx_chains; 2024 2025 mutex_lock(&sdata->local->mtx); 2026 err = ieee80211_vif_use_channel(sdata, &setup->chandef, 2027 IEEE80211_CHANCTX_SHARED); 2028 mutex_unlock(&sdata->local->mtx); 2029 if (err) 2030 return err; 2031 2032 return ieee80211_start_mesh(sdata); 2033 } 2034 2035 static int ieee80211_leave_mesh(struct wiphy *wiphy, struct net_device *dev) 2036 { 2037 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2038 2039 ieee80211_stop_mesh(sdata); 2040 mutex_lock(&sdata->local->mtx); 2041 ieee80211_vif_release_channel(sdata); 2042 mutex_unlock(&sdata->local->mtx); 2043 2044 return 0; 2045 } 2046 #endif 2047 2048 static int ieee80211_change_bss(struct wiphy *wiphy, 2049 struct net_device *dev, 2050 struct bss_parameters *params) 2051 { 2052 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2053 enum ieee80211_band band; 2054 u32 changed = 0; 2055 2056 if (!sdata_dereference(sdata->u.ap.beacon, sdata)) 2057 return -ENOENT; 2058 2059 band = ieee80211_get_sdata_band(sdata); 2060 2061 if (params->use_cts_prot >= 0) { 2062 sdata->vif.bss_conf.use_cts_prot = params->use_cts_prot; 2063 changed |= BSS_CHANGED_ERP_CTS_PROT; 2064 } 2065 if (params->use_short_preamble >= 0) { 2066 sdata->vif.bss_conf.use_short_preamble = 2067 params->use_short_preamble; 2068 changed |= BSS_CHANGED_ERP_PREAMBLE; 2069 } 2070 2071 if (!sdata->vif.bss_conf.use_short_slot && 2072 band == IEEE80211_BAND_5GHZ) { 2073 sdata->vif.bss_conf.use_short_slot = true; 2074 changed |= BSS_CHANGED_ERP_SLOT; 2075 } 2076 2077 if (params->use_short_slot_time >= 0) { 2078 sdata->vif.bss_conf.use_short_slot = 2079 params->use_short_slot_time; 2080 changed |= BSS_CHANGED_ERP_SLOT; 2081 } 2082 2083 if (params->basic_rates) { 2084 ieee80211_parse_bitrates(&sdata->vif.bss_conf.chandef, 2085 wiphy->bands[band], 2086 params->basic_rates, 2087 params->basic_rates_len, 2088 &sdata->vif.bss_conf.basic_rates); 2089 changed |= BSS_CHANGED_BASIC_RATES; 2090 } 2091 2092 if (params->ap_isolate >= 0) { 2093 if (params->ap_isolate) 2094 sdata->flags |= IEEE80211_SDATA_DONT_BRIDGE_PACKETS; 2095 else 2096 sdata->flags &= ~IEEE80211_SDATA_DONT_BRIDGE_PACKETS; 2097 } 2098 2099 if (params->ht_opmode >= 0) { 2100 sdata->vif.bss_conf.ht_operation_mode = 2101 (u16) params->ht_opmode; 2102 changed |= BSS_CHANGED_HT; 2103 } 2104 2105 if (params->p2p_ctwindow >= 0) { 2106 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow &= 2107 ~IEEE80211_P2P_OPPPS_CTWINDOW_MASK; 2108 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |= 2109 params->p2p_ctwindow & IEEE80211_P2P_OPPPS_CTWINDOW_MASK; 2110 changed |= BSS_CHANGED_P2P_PS; 2111 } 2112 2113 if (params->p2p_opp_ps > 0) { 2114 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |= 2115 IEEE80211_P2P_OPPPS_ENABLE_BIT; 2116 changed |= BSS_CHANGED_P2P_PS; 2117 } else if (params->p2p_opp_ps == 0) { 2118 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow &= 2119 ~IEEE80211_P2P_OPPPS_ENABLE_BIT; 2120 changed |= BSS_CHANGED_P2P_PS; 2121 } 2122 2123 ieee80211_bss_info_change_notify(sdata, changed); 2124 2125 return 0; 2126 } 2127 2128 static int ieee80211_set_txq_params(struct wiphy *wiphy, 2129 struct net_device *dev, 2130 struct ieee80211_txq_params *params) 2131 { 2132 struct ieee80211_local *local = wiphy_priv(wiphy); 2133 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2134 struct ieee80211_tx_queue_params p; 2135 2136 if (!local->ops->conf_tx) 2137 return -EOPNOTSUPP; 2138 2139 if (local->hw.queues < IEEE80211_NUM_ACS) 2140 return -EOPNOTSUPP; 2141 2142 memset(&p, 0, sizeof(p)); 2143 p.aifs = params->aifs; 2144 p.cw_max = params->cwmax; 2145 p.cw_min = params->cwmin; 2146 p.txop = params->txop; 2147 2148 /* 2149 * Setting tx queue params disables u-apsd because it's only 2150 * called in master mode. 2151 */ 2152 p.uapsd = false; 2153 2154 sdata->tx_conf[params->ac] = p; 2155 if (drv_conf_tx(local, sdata, params->ac, &p)) { 2156 wiphy_debug(local->hw.wiphy, 2157 "failed to set TX queue parameters for AC %d\n", 2158 params->ac); 2159 return -EINVAL; 2160 } 2161 2162 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_QOS); 2163 2164 return 0; 2165 } 2166 2167 #ifdef CONFIG_PM 2168 static int ieee80211_suspend(struct wiphy *wiphy, 2169 struct cfg80211_wowlan *wowlan) 2170 { 2171 return __ieee80211_suspend(wiphy_priv(wiphy), wowlan); 2172 } 2173 2174 static int ieee80211_resume(struct wiphy *wiphy) 2175 { 2176 return __ieee80211_resume(wiphy_priv(wiphy)); 2177 } 2178 #else 2179 #define ieee80211_suspend NULL 2180 #define ieee80211_resume NULL 2181 #endif 2182 2183 static int ieee80211_scan(struct wiphy *wiphy, 2184 struct cfg80211_scan_request *req) 2185 { 2186 struct ieee80211_sub_if_data *sdata; 2187 2188 sdata = IEEE80211_WDEV_TO_SUB_IF(req->wdev); 2189 2190 switch (ieee80211_vif_type_p2p(&sdata->vif)) { 2191 case NL80211_IFTYPE_STATION: 2192 case NL80211_IFTYPE_ADHOC: 2193 case NL80211_IFTYPE_MESH_POINT: 2194 case NL80211_IFTYPE_P2P_CLIENT: 2195 case NL80211_IFTYPE_P2P_DEVICE: 2196 break; 2197 case NL80211_IFTYPE_P2P_GO: 2198 if (sdata->local->ops->hw_scan) 2199 break; 2200 /* 2201 * FIXME: implement NoA while scanning in software, 2202 * for now fall through to allow scanning only when 2203 * beaconing hasn't been configured yet 2204 */ 2205 case NL80211_IFTYPE_AP: 2206 /* 2207 * If the scan has been forced (and the driver supports 2208 * forcing), don't care about being beaconing already. 2209 * This will create problems to the attached stations (e.g. all 2210 * the frames sent while scanning on other channel will be 2211 * lost) 2212 */ 2213 if (sdata->u.ap.beacon && 2214 (!(wiphy->features & NL80211_FEATURE_AP_SCAN) || 2215 !(req->flags & NL80211_SCAN_FLAG_AP))) 2216 return -EOPNOTSUPP; 2217 break; 2218 default: 2219 return -EOPNOTSUPP; 2220 } 2221 2222 return ieee80211_request_scan(sdata, req); 2223 } 2224 2225 static int 2226 ieee80211_sched_scan_start(struct wiphy *wiphy, 2227 struct net_device *dev, 2228 struct cfg80211_sched_scan_request *req) 2229 { 2230 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2231 2232 if (!sdata->local->ops->sched_scan_start) 2233 return -EOPNOTSUPP; 2234 2235 return ieee80211_request_sched_scan_start(sdata, req); 2236 } 2237 2238 static int 2239 ieee80211_sched_scan_stop(struct wiphy *wiphy, struct net_device *dev) 2240 { 2241 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2242 2243 if (!sdata->local->ops->sched_scan_stop) 2244 return -EOPNOTSUPP; 2245 2246 return ieee80211_request_sched_scan_stop(sdata); 2247 } 2248 2249 static int ieee80211_auth(struct wiphy *wiphy, struct net_device *dev, 2250 struct cfg80211_auth_request *req) 2251 { 2252 return ieee80211_mgd_auth(IEEE80211_DEV_TO_SUB_IF(dev), req); 2253 } 2254 2255 static int ieee80211_assoc(struct wiphy *wiphy, struct net_device *dev, 2256 struct cfg80211_assoc_request *req) 2257 { 2258 return ieee80211_mgd_assoc(IEEE80211_DEV_TO_SUB_IF(dev), req); 2259 } 2260 2261 static int ieee80211_deauth(struct wiphy *wiphy, struct net_device *dev, 2262 struct cfg80211_deauth_request *req) 2263 { 2264 return ieee80211_mgd_deauth(IEEE80211_DEV_TO_SUB_IF(dev), req); 2265 } 2266 2267 static int ieee80211_disassoc(struct wiphy *wiphy, struct net_device *dev, 2268 struct cfg80211_disassoc_request *req) 2269 { 2270 return ieee80211_mgd_disassoc(IEEE80211_DEV_TO_SUB_IF(dev), req); 2271 } 2272 2273 static int ieee80211_join_ibss(struct wiphy *wiphy, struct net_device *dev, 2274 struct cfg80211_ibss_params *params) 2275 { 2276 return ieee80211_ibss_join(IEEE80211_DEV_TO_SUB_IF(dev), params); 2277 } 2278 2279 static int ieee80211_leave_ibss(struct wiphy *wiphy, struct net_device *dev) 2280 { 2281 return ieee80211_ibss_leave(IEEE80211_DEV_TO_SUB_IF(dev)); 2282 } 2283 2284 static int ieee80211_set_mcast_rate(struct wiphy *wiphy, struct net_device *dev, 2285 int rate[IEEE80211_NUM_BANDS]) 2286 { 2287 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2288 2289 memcpy(sdata->vif.bss_conf.mcast_rate, rate, 2290 sizeof(int) * IEEE80211_NUM_BANDS); 2291 2292 return 0; 2293 } 2294 2295 static int ieee80211_set_wiphy_params(struct wiphy *wiphy, u32 changed) 2296 { 2297 struct ieee80211_local *local = wiphy_priv(wiphy); 2298 int err; 2299 2300 if (changed & WIPHY_PARAM_FRAG_THRESHOLD) { 2301 err = drv_set_frag_threshold(local, wiphy->frag_threshold); 2302 2303 if (err) 2304 return err; 2305 } 2306 2307 if (changed & WIPHY_PARAM_COVERAGE_CLASS) { 2308 err = drv_set_coverage_class(local, wiphy->coverage_class); 2309 2310 if (err) 2311 return err; 2312 } 2313 2314 if (changed & WIPHY_PARAM_RTS_THRESHOLD) { 2315 err = drv_set_rts_threshold(local, wiphy->rts_threshold); 2316 2317 if (err) 2318 return err; 2319 } 2320 2321 if (changed & WIPHY_PARAM_RETRY_SHORT) { 2322 if (wiphy->retry_short > IEEE80211_MAX_TX_RETRY) 2323 return -EINVAL; 2324 local->hw.conf.short_frame_max_tx_count = wiphy->retry_short; 2325 } 2326 if (changed & WIPHY_PARAM_RETRY_LONG) { 2327 if (wiphy->retry_long > IEEE80211_MAX_TX_RETRY) 2328 return -EINVAL; 2329 local->hw.conf.long_frame_max_tx_count = wiphy->retry_long; 2330 } 2331 if (changed & 2332 (WIPHY_PARAM_RETRY_SHORT | WIPHY_PARAM_RETRY_LONG)) 2333 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_RETRY_LIMITS); 2334 2335 return 0; 2336 } 2337 2338 static int ieee80211_set_tx_power(struct wiphy *wiphy, 2339 struct wireless_dev *wdev, 2340 enum nl80211_tx_power_setting type, int mbm) 2341 { 2342 struct ieee80211_local *local = wiphy_priv(wiphy); 2343 struct ieee80211_sub_if_data *sdata; 2344 2345 if (wdev) { 2346 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 2347 2348 switch (type) { 2349 case NL80211_TX_POWER_AUTOMATIC: 2350 sdata->user_power_level = IEEE80211_UNSET_POWER_LEVEL; 2351 break; 2352 case NL80211_TX_POWER_LIMITED: 2353 case NL80211_TX_POWER_FIXED: 2354 if (mbm < 0 || (mbm % 100)) 2355 return -EOPNOTSUPP; 2356 sdata->user_power_level = MBM_TO_DBM(mbm); 2357 break; 2358 } 2359 2360 ieee80211_recalc_txpower(sdata); 2361 2362 return 0; 2363 } 2364 2365 switch (type) { 2366 case NL80211_TX_POWER_AUTOMATIC: 2367 local->user_power_level = IEEE80211_UNSET_POWER_LEVEL; 2368 break; 2369 case NL80211_TX_POWER_LIMITED: 2370 case NL80211_TX_POWER_FIXED: 2371 if (mbm < 0 || (mbm % 100)) 2372 return -EOPNOTSUPP; 2373 local->user_power_level = MBM_TO_DBM(mbm); 2374 break; 2375 } 2376 2377 mutex_lock(&local->iflist_mtx); 2378 list_for_each_entry(sdata, &local->interfaces, list) 2379 sdata->user_power_level = local->user_power_level; 2380 list_for_each_entry(sdata, &local->interfaces, list) 2381 ieee80211_recalc_txpower(sdata); 2382 mutex_unlock(&local->iflist_mtx); 2383 2384 return 0; 2385 } 2386 2387 static int ieee80211_get_tx_power(struct wiphy *wiphy, 2388 struct wireless_dev *wdev, 2389 int *dbm) 2390 { 2391 struct ieee80211_local *local = wiphy_priv(wiphy); 2392 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 2393 2394 if (!local->use_chanctx) 2395 *dbm = local->hw.conf.power_level; 2396 else 2397 *dbm = sdata->vif.bss_conf.txpower; 2398 2399 return 0; 2400 } 2401 2402 static int ieee80211_set_wds_peer(struct wiphy *wiphy, struct net_device *dev, 2403 const u8 *addr) 2404 { 2405 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2406 2407 memcpy(&sdata->u.wds.remote_addr, addr, ETH_ALEN); 2408 2409 return 0; 2410 } 2411 2412 static void ieee80211_rfkill_poll(struct wiphy *wiphy) 2413 { 2414 struct ieee80211_local *local = wiphy_priv(wiphy); 2415 2416 drv_rfkill_poll(local); 2417 } 2418 2419 #ifdef CONFIG_NL80211_TESTMODE 2420 static int ieee80211_testmode_cmd(struct wiphy *wiphy, 2421 struct wireless_dev *wdev, 2422 void *data, int len) 2423 { 2424 struct ieee80211_local *local = wiphy_priv(wiphy); 2425 struct ieee80211_vif *vif = NULL; 2426 2427 if (!local->ops->testmode_cmd) 2428 return -EOPNOTSUPP; 2429 2430 if (wdev) { 2431 struct ieee80211_sub_if_data *sdata; 2432 2433 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 2434 if (sdata->flags & IEEE80211_SDATA_IN_DRIVER) 2435 vif = &sdata->vif; 2436 } 2437 2438 return local->ops->testmode_cmd(&local->hw, vif, data, len); 2439 } 2440 2441 static int ieee80211_testmode_dump(struct wiphy *wiphy, 2442 struct sk_buff *skb, 2443 struct netlink_callback *cb, 2444 void *data, int len) 2445 { 2446 struct ieee80211_local *local = wiphy_priv(wiphy); 2447 2448 if (!local->ops->testmode_dump) 2449 return -EOPNOTSUPP; 2450 2451 return local->ops->testmode_dump(&local->hw, skb, cb, data, len); 2452 } 2453 #endif 2454 2455 int __ieee80211_request_smps_ap(struct ieee80211_sub_if_data *sdata, 2456 enum ieee80211_smps_mode smps_mode) 2457 { 2458 struct sta_info *sta; 2459 enum ieee80211_smps_mode old_req; 2460 int i; 2461 2462 if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_AP)) 2463 return -EINVAL; 2464 2465 if (sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_20_NOHT) 2466 return 0; 2467 2468 old_req = sdata->u.ap.req_smps; 2469 sdata->u.ap.req_smps = smps_mode; 2470 2471 /* AUTOMATIC doesn't mean much for AP - don't allow it */ 2472 if (old_req == smps_mode || 2473 smps_mode == IEEE80211_SMPS_AUTOMATIC) 2474 return 0; 2475 2476 /* If no associated stations, there's no need to do anything */ 2477 if (!atomic_read(&sdata->u.ap.num_mcast_sta)) { 2478 sdata->smps_mode = smps_mode; 2479 ieee80211_queue_work(&sdata->local->hw, &sdata->recalc_smps); 2480 return 0; 2481 } 2482 2483 ht_dbg(sdata, 2484 "SMSP %d requested in AP mode, sending Action frame to %d stations\n", 2485 smps_mode, atomic_read(&sdata->u.ap.num_mcast_sta)); 2486 2487 mutex_lock(&sdata->local->sta_mtx); 2488 for (i = 0; i < STA_HASH_SIZE; i++) { 2489 for (sta = rcu_dereference_protected(sdata->local->sta_hash[i], 2490 lockdep_is_held(&sdata->local->sta_mtx)); 2491 sta; 2492 sta = rcu_dereference_protected(sta->hnext, 2493 lockdep_is_held(&sdata->local->sta_mtx))) { 2494 /* 2495 * Only stations associated to our AP and 2496 * associated VLANs 2497 */ 2498 if (sta->sdata->bss != &sdata->u.ap) 2499 continue; 2500 2501 /* This station doesn't support MIMO - skip it */ 2502 if (sta_info_tx_streams(sta) == 1) 2503 continue; 2504 2505 /* 2506 * Don't wake up a STA just to send the action frame 2507 * unless we are getting more restrictive. 2508 */ 2509 if (test_sta_flag(sta, WLAN_STA_PS_STA) && 2510 !ieee80211_smps_is_restrictive(sta->known_smps_mode, 2511 smps_mode)) { 2512 ht_dbg(sdata, 2513 "Won't send SMPS to sleeping STA %pM\n", 2514 sta->sta.addr); 2515 continue; 2516 } 2517 2518 /* 2519 * If the STA is not authorized, wait until it gets 2520 * authorized and the action frame will be sent then. 2521 */ 2522 if (!test_sta_flag(sta, WLAN_STA_AUTHORIZED)) 2523 continue; 2524 2525 ht_dbg(sdata, "Sending SMPS to %pM\n", sta->sta.addr); 2526 ieee80211_send_smps_action(sdata, smps_mode, 2527 sta->sta.addr, 2528 sdata->vif.bss_conf.bssid); 2529 } 2530 } 2531 mutex_unlock(&sdata->local->sta_mtx); 2532 2533 sdata->smps_mode = smps_mode; 2534 ieee80211_queue_work(&sdata->local->hw, &sdata->recalc_smps); 2535 2536 return 0; 2537 } 2538 2539 int __ieee80211_request_smps_mgd(struct ieee80211_sub_if_data *sdata, 2540 enum ieee80211_smps_mode smps_mode) 2541 { 2542 const u8 *ap; 2543 enum ieee80211_smps_mode old_req; 2544 int err; 2545 2546 lockdep_assert_held(&sdata->wdev.mtx); 2547 2548 if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_STATION)) 2549 return -EINVAL; 2550 2551 old_req = sdata->u.mgd.req_smps; 2552 sdata->u.mgd.req_smps = smps_mode; 2553 2554 if (old_req == smps_mode && 2555 smps_mode != IEEE80211_SMPS_AUTOMATIC) 2556 return 0; 2557 2558 /* 2559 * If not associated, or current association is not an HT 2560 * association, there's no need to do anything, just store 2561 * the new value until we associate. 2562 */ 2563 if (!sdata->u.mgd.associated || 2564 sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_20_NOHT) 2565 return 0; 2566 2567 ap = sdata->u.mgd.associated->bssid; 2568 2569 if (smps_mode == IEEE80211_SMPS_AUTOMATIC) { 2570 if (sdata->u.mgd.powersave) 2571 smps_mode = IEEE80211_SMPS_DYNAMIC; 2572 else 2573 smps_mode = IEEE80211_SMPS_OFF; 2574 } 2575 2576 /* send SM PS frame to AP */ 2577 err = ieee80211_send_smps_action(sdata, smps_mode, 2578 ap, ap); 2579 if (err) 2580 sdata->u.mgd.req_smps = old_req; 2581 2582 return err; 2583 } 2584 2585 static int ieee80211_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev, 2586 bool enabled, int timeout) 2587 { 2588 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2589 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); 2590 2591 if (sdata->vif.type != NL80211_IFTYPE_STATION) 2592 return -EOPNOTSUPP; 2593 2594 if (!(local->hw.flags & IEEE80211_HW_SUPPORTS_PS)) 2595 return -EOPNOTSUPP; 2596 2597 if (enabled == sdata->u.mgd.powersave && 2598 timeout == local->dynamic_ps_forced_timeout) 2599 return 0; 2600 2601 sdata->u.mgd.powersave = enabled; 2602 local->dynamic_ps_forced_timeout = timeout; 2603 2604 /* no change, but if automatic follow powersave */ 2605 sdata_lock(sdata); 2606 __ieee80211_request_smps_mgd(sdata, sdata->u.mgd.req_smps); 2607 sdata_unlock(sdata); 2608 2609 if (local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_PS) 2610 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS); 2611 2612 ieee80211_recalc_ps(local, -1); 2613 ieee80211_recalc_ps_vif(sdata); 2614 2615 return 0; 2616 } 2617 2618 static int ieee80211_set_cqm_rssi_config(struct wiphy *wiphy, 2619 struct net_device *dev, 2620 s32 rssi_thold, u32 rssi_hyst) 2621 { 2622 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2623 struct ieee80211_vif *vif = &sdata->vif; 2624 struct ieee80211_bss_conf *bss_conf = &vif->bss_conf; 2625 2626 if (rssi_thold == bss_conf->cqm_rssi_thold && 2627 rssi_hyst == bss_conf->cqm_rssi_hyst) 2628 return 0; 2629 2630 bss_conf->cqm_rssi_thold = rssi_thold; 2631 bss_conf->cqm_rssi_hyst = rssi_hyst; 2632 2633 /* tell the driver upon association, unless already associated */ 2634 if (sdata->u.mgd.associated && 2635 sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI) 2636 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_CQM); 2637 2638 return 0; 2639 } 2640 2641 static int ieee80211_set_bitrate_mask(struct wiphy *wiphy, 2642 struct net_device *dev, 2643 const u8 *addr, 2644 const struct cfg80211_bitrate_mask *mask) 2645 { 2646 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2647 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); 2648 int i, ret; 2649 2650 if (!ieee80211_sdata_running(sdata)) 2651 return -ENETDOWN; 2652 2653 if (local->hw.flags & IEEE80211_HW_HAS_RATE_CONTROL) { 2654 ret = drv_set_bitrate_mask(local, sdata, mask); 2655 if (ret) 2656 return ret; 2657 } 2658 2659 for (i = 0; i < IEEE80211_NUM_BANDS; i++) { 2660 struct ieee80211_supported_band *sband = wiphy->bands[i]; 2661 int j; 2662 2663 sdata->rc_rateidx_mask[i] = mask->control[i].legacy; 2664 memcpy(sdata->rc_rateidx_mcs_mask[i], mask->control[i].ht_mcs, 2665 sizeof(mask->control[i].ht_mcs)); 2666 2667 sdata->rc_has_mcs_mask[i] = false; 2668 if (!sband) 2669 continue; 2670 2671 for (j = 0; j < IEEE80211_HT_MCS_MASK_LEN; j++) 2672 if (~sdata->rc_rateidx_mcs_mask[i][j]) { 2673 sdata->rc_has_mcs_mask[i] = true; 2674 break; 2675 } 2676 } 2677 2678 return 0; 2679 } 2680 2681 static int ieee80211_start_roc_work(struct ieee80211_local *local, 2682 struct ieee80211_sub_if_data *sdata, 2683 struct ieee80211_channel *channel, 2684 unsigned int duration, u64 *cookie, 2685 struct sk_buff *txskb, 2686 enum ieee80211_roc_type type) 2687 { 2688 struct ieee80211_roc_work *roc, *tmp; 2689 bool queued = false; 2690 int ret; 2691 2692 lockdep_assert_held(&local->mtx); 2693 2694 if (local->use_chanctx && !local->ops->remain_on_channel) 2695 return -EOPNOTSUPP; 2696 2697 roc = kzalloc(sizeof(*roc), GFP_KERNEL); 2698 if (!roc) 2699 return -ENOMEM; 2700 2701 /* 2702 * If the duration is zero, then the driver 2703 * wouldn't actually do anything. Set it to 2704 * 10 for now. 2705 * 2706 * TODO: cancel the off-channel operation 2707 * when we get the SKB's TX status and 2708 * the wait time was zero before. 2709 */ 2710 if (!duration) 2711 duration = 10; 2712 2713 roc->chan = channel; 2714 roc->duration = duration; 2715 roc->req_duration = duration; 2716 roc->frame = txskb; 2717 roc->type = type; 2718 roc->mgmt_tx_cookie = (unsigned long)txskb; 2719 roc->sdata = sdata; 2720 INIT_DELAYED_WORK(&roc->work, ieee80211_sw_roc_work); 2721 INIT_LIST_HEAD(&roc->dependents); 2722 2723 /* 2724 * cookie is either the roc cookie (for normal roc) 2725 * or the SKB (for mgmt TX) 2726 */ 2727 if (!txskb) { 2728 /* local->mtx protects this */ 2729 local->roc_cookie_counter++; 2730 roc->cookie = local->roc_cookie_counter; 2731 /* wow, you wrapped 64 bits ... more likely a bug */ 2732 if (WARN_ON(roc->cookie == 0)) { 2733 roc->cookie = 1; 2734 local->roc_cookie_counter++; 2735 } 2736 *cookie = roc->cookie; 2737 } else { 2738 *cookie = (unsigned long)txskb; 2739 } 2740 2741 /* if there's one pending or we're scanning, queue this one */ 2742 if (!list_empty(&local->roc_list) || 2743 local->scanning || local->radar_detect_enabled) 2744 goto out_check_combine; 2745 2746 /* if not HW assist, just queue & schedule work */ 2747 if (!local->ops->remain_on_channel) { 2748 ieee80211_queue_delayed_work(&local->hw, &roc->work, 0); 2749 goto out_queue; 2750 } 2751 2752 /* otherwise actually kick it off here (for error handling) */ 2753 2754 ret = drv_remain_on_channel(local, sdata, channel, duration, type); 2755 if (ret) { 2756 kfree(roc); 2757 return ret; 2758 } 2759 2760 roc->started = true; 2761 goto out_queue; 2762 2763 out_check_combine: 2764 list_for_each_entry(tmp, &local->roc_list, list) { 2765 if (tmp->chan != channel || tmp->sdata != sdata) 2766 continue; 2767 2768 /* 2769 * Extend this ROC if possible: 2770 * 2771 * If it hasn't started yet, just increase the duration 2772 * and add the new one to the list of dependents. 2773 * If the type of the new ROC has higher priority, modify the 2774 * type of the previous one to match that of the new one. 2775 */ 2776 if (!tmp->started) { 2777 list_add_tail(&roc->list, &tmp->dependents); 2778 tmp->duration = max(tmp->duration, roc->duration); 2779 tmp->type = max(tmp->type, roc->type); 2780 queued = true; 2781 break; 2782 } 2783 2784 /* If it has already started, it's more difficult ... */ 2785 if (local->ops->remain_on_channel) { 2786 unsigned long j = jiffies; 2787 2788 /* 2789 * In the offloaded ROC case, if it hasn't begun, add 2790 * this new one to the dependent list to be handled 2791 * when the master one begins. If it has begun, 2792 * check that there's still a minimum time left and 2793 * if so, start this one, transmitting the frame, but 2794 * add it to the list directly after this one with 2795 * a reduced time so we'll ask the driver to execute 2796 * it right after finishing the previous one, in the 2797 * hope that it'll also be executed right afterwards, 2798 * effectively extending the old one. 2799 * If there's no minimum time left, just add it to the 2800 * normal list. 2801 * TODO: the ROC type is ignored here, assuming that it 2802 * is better to immediately use the current ROC. 2803 */ 2804 if (!tmp->hw_begun) { 2805 list_add_tail(&roc->list, &tmp->dependents); 2806 queued = true; 2807 break; 2808 } 2809 2810 if (time_before(j + IEEE80211_ROC_MIN_LEFT, 2811 tmp->hw_start_time + 2812 msecs_to_jiffies(tmp->duration))) { 2813 int new_dur; 2814 2815 ieee80211_handle_roc_started(roc); 2816 2817 new_dur = roc->duration - 2818 jiffies_to_msecs(tmp->hw_start_time + 2819 msecs_to_jiffies( 2820 tmp->duration) - 2821 j); 2822 2823 if (new_dur > 0) { 2824 /* add right after tmp */ 2825 list_add(&roc->list, &tmp->list); 2826 } else { 2827 list_add_tail(&roc->list, 2828 &tmp->dependents); 2829 } 2830 queued = true; 2831 } 2832 } else if (del_timer_sync(&tmp->work.timer)) { 2833 unsigned long new_end; 2834 2835 /* 2836 * In the software ROC case, cancel the timer, if 2837 * that fails then the finish work is already 2838 * queued/pending and thus we queue the new ROC 2839 * normally, if that succeeds then we can extend 2840 * the timer duration and TX the frame (if any.) 2841 */ 2842 2843 list_add_tail(&roc->list, &tmp->dependents); 2844 queued = true; 2845 2846 new_end = jiffies + msecs_to_jiffies(roc->duration); 2847 2848 /* ok, it was started & we canceled timer */ 2849 if (time_after(new_end, tmp->work.timer.expires)) 2850 mod_timer(&tmp->work.timer, new_end); 2851 else 2852 add_timer(&tmp->work.timer); 2853 2854 ieee80211_handle_roc_started(roc); 2855 } 2856 break; 2857 } 2858 2859 out_queue: 2860 if (!queued) 2861 list_add_tail(&roc->list, &local->roc_list); 2862 2863 return 0; 2864 } 2865 2866 static int ieee80211_remain_on_channel(struct wiphy *wiphy, 2867 struct wireless_dev *wdev, 2868 struct ieee80211_channel *chan, 2869 unsigned int duration, 2870 u64 *cookie) 2871 { 2872 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 2873 struct ieee80211_local *local = sdata->local; 2874 int ret; 2875 2876 mutex_lock(&local->mtx); 2877 ret = ieee80211_start_roc_work(local, sdata, chan, 2878 duration, cookie, NULL, 2879 IEEE80211_ROC_TYPE_NORMAL); 2880 mutex_unlock(&local->mtx); 2881 2882 return ret; 2883 } 2884 2885 static int ieee80211_cancel_roc(struct ieee80211_local *local, 2886 u64 cookie, bool mgmt_tx) 2887 { 2888 struct ieee80211_roc_work *roc, *tmp, *found = NULL; 2889 int ret; 2890 2891 mutex_lock(&local->mtx); 2892 list_for_each_entry_safe(roc, tmp, &local->roc_list, list) { 2893 struct ieee80211_roc_work *dep, *tmp2; 2894 2895 list_for_each_entry_safe(dep, tmp2, &roc->dependents, list) { 2896 if (!mgmt_tx && dep->cookie != cookie) 2897 continue; 2898 else if (mgmt_tx && dep->mgmt_tx_cookie != cookie) 2899 continue; 2900 /* found dependent item -- just remove it */ 2901 list_del(&dep->list); 2902 mutex_unlock(&local->mtx); 2903 2904 ieee80211_roc_notify_destroy(dep, true); 2905 return 0; 2906 } 2907 2908 if (!mgmt_tx && roc->cookie != cookie) 2909 continue; 2910 else if (mgmt_tx && roc->mgmt_tx_cookie != cookie) 2911 continue; 2912 2913 found = roc; 2914 break; 2915 } 2916 2917 if (!found) { 2918 mutex_unlock(&local->mtx); 2919 return -ENOENT; 2920 } 2921 2922 /* 2923 * We found the item to cancel, so do that. Note that it 2924 * may have dependents, which we also cancel (and send 2925 * the expired signal for.) Not doing so would be quite 2926 * tricky here, but we may need to fix it later. 2927 */ 2928 2929 if (local->ops->remain_on_channel) { 2930 if (found->started) { 2931 ret = drv_cancel_remain_on_channel(local); 2932 if (WARN_ON_ONCE(ret)) { 2933 mutex_unlock(&local->mtx); 2934 return ret; 2935 } 2936 } 2937 2938 list_del(&found->list); 2939 2940 if (found->started) 2941 ieee80211_start_next_roc(local); 2942 mutex_unlock(&local->mtx); 2943 2944 ieee80211_roc_notify_destroy(found, true); 2945 } else { 2946 /* work may be pending so use it all the time */ 2947 found->abort = true; 2948 ieee80211_queue_delayed_work(&local->hw, &found->work, 0); 2949 2950 mutex_unlock(&local->mtx); 2951 2952 /* work will clean up etc */ 2953 flush_delayed_work(&found->work); 2954 WARN_ON(!found->to_be_freed); 2955 kfree(found); 2956 } 2957 2958 return 0; 2959 } 2960 2961 static int ieee80211_cancel_remain_on_channel(struct wiphy *wiphy, 2962 struct wireless_dev *wdev, 2963 u64 cookie) 2964 { 2965 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 2966 struct ieee80211_local *local = sdata->local; 2967 2968 return ieee80211_cancel_roc(local, cookie, false); 2969 } 2970 2971 static int ieee80211_start_radar_detection(struct wiphy *wiphy, 2972 struct net_device *dev, 2973 struct cfg80211_chan_def *chandef, 2974 u32 cac_time_ms) 2975 { 2976 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2977 struct ieee80211_local *local = sdata->local; 2978 int err; 2979 2980 mutex_lock(&local->mtx); 2981 if (!list_empty(&local->roc_list) || local->scanning) { 2982 err = -EBUSY; 2983 goto out_unlock; 2984 } 2985 2986 /* whatever, but channel contexts should not complain about that one */ 2987 sdata->smps_mode = IEEE80211_SMPS_OFF; 2988 sdata->needed_rx_chains = local->rx_chains; 2989 2990 err = ieee80211_vif_use_channel(sdata, chandef, 2991 IEEE80211_CHANCTX_SHARED); 2992 if (err) 2993 goto out_unlock; 2994 2995 ieee80211_queue_delayed_work(&sdata->local->hw, 2996 &sdata->dfs_cac_timer_work, 2997 msecs_to_jiffies(cac_time_ms)); 2998 2999 out_unlock: 3000 mutex_unlock(&local->mtx); 3001 return err; 3002 } 3003 3004 static struct cfg80211_beacon_data * 3005 cfg80211_beacon_dup(struct cfg80211_beacon_data *beacon) 3006 { 3007 struct cfg80211_beacon_data *new_beacon; 3008 u8 *pos; 3009 int len; 3010 3011 len = beacon->head_len + beacon->tail_len + beacon->beacon_ies_len + 3012 beacon->proberesp_ies_len + beacon->assocresp_ies_len + 3013 beacon->probe_resp_len; 3014 3015 new_beacon = kzalloc(sizeof(*new_beacon) + len, GFP_KERNEL); 3016 if (!new_beacon) 3017 return NULL; 3018 3019 pos = (u8 *)(new_beacon + 1); 3020 if (beacon->head_len) { 3021 new_beacon->head_len = beacon->head_len; 3022 new_beacon->head = pos; 3023 memcpy(pos, beacon->head, beacon->head_len); 3024 pos += beacon->head_len; 3025 } 3026 if (beacon->tail_len) { 3027 new_beacon->tail_len = beacon->tail_len; 3028 new_beacon->tail = pos; 3029 memcpy(pos, beacon->tail, beacon->tail_len); 3030 pos += beacon->tail_len; 3031 } 3032 if (beacon->beacon_ies_len) { 3033 new_beacon->beacon_ies_len = beacon->beacon_ies_len; 3034 new_beacon->beacon_ies = pos; 3035 memcpy(pos, beacon->beacon_ies, beacon->beacon_ies_len); 3036 pos += beacon->beacon_ies_len; 3037 } 3038 if (beacon->proberesp_ies_len) { 3039 new_beacon->proberesp_ies_len = beacon->proberesp_ies_len; 3040 new_beacon->proberesp_ies = pos; 3041 memcpy(pos, beacon->proberesp_ies, beacon->proberesp_ies_len); 3042 pos += beacon->proberesp_ies_len; 3043 } 3044 if (beacon->assocresp_ies_len) { 3045 new_beacon->assocresp_ies_len = beacon->assocresp_ies_len; 3046 new_beacon->assocresp_ies = pos; 3047 memcpy(pos, beacon->assocresp_ies, beacon->assocresp_ies_len); 3048 pos += beacon->assocresp_ies_len; 3049 } 3050 if (beacon->probe_resp_len) { 3051 new_beacon->probe_resp_len = beacon->probe_resp_len; 3052 beacon->probe_resp = pos; 3053 memcpy(pos, beacon->probe_resp, beacon->probe_resp_len); 3054 pos += beacon->probe_resp_len; 3055 } 3056 3057 return new_beacon; 3058 } 3059 3060 void ieee80211_csa_finish(struct ieee80211_vif *vif) 3061 { 3062 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); 3063 3064 ieee80211_queue_work(&sdata->local->hw, 3065 &sdata->csa_finalize_work); 3066 } 3067 EXPORT_SYMBOL(ieee80211_csa_finish); 3068 3069 static int ieee80211_set_after_csa_beacon(struct ieee80211_sub_if_data *sdata, 3070 u32 *changed) 3071 { 3072 int err; 3073 3074 switch (sdata->vif.type) { 3075 case NL80211_IFTYPE_AP: 3076 err = ieee80211_assign_beacon(sdata, sdata->u.ap.next_beacon); 3077 kfree(sdata->u.ap.next_beacon); 3078 sdata->u.ap.next_beacon = NULL; 3079 3080 if (err < 0) 3081 return err; 3082 *changed |= err; 3083 break; 3084 case NL80211_IFTYPE_ADHOC: 3085 err = ieee80211_ibss_finish_csa(sdata); 3086 if (err < 0) 3087 return err; 3088 *changed |= err; 3089 break; 3090 #ifdef CONFIG_MAC80211_MESH 3091 case NL80211_IFTYPE_MESH_POINT: 3092 err = ieee80211_mesh_finish_csa(sdata); 3093 if (err < 0) 3094 return err; 3095 *changed |= err; 3096 break; 3097 #endif 3098 default: 3099 WARN_ON(1); 3100 return -EINVAL; 3101 } 3102 3103 return 0; 3104 } 3105 3106 static int __ieee80211_csa_finalize(struct ieee80211_sub_if_data *sdata) 3107 { 3108 struct ieee80211_local *local = sdata->local; 3109 u32 changed = 0; 3110 int err; 3111 3112 sdata_assert_lock(sdata); 3113 lockdep_assert_held(&local->mtx); 3114 3115 sdata->radar_required = sdata->csa_radar_required; 3116 err = ieee80211_vif_change_channel(sdata, &changed); 3117 if (err < 0) 3118 return err; 3119 3120 if (!local->use_chanctx) { 3121 local->_oper_chandef = sdata->csa_chandef; 3122 ieee80211_hw_config(local, 0); 3123 } 3124 3125 sdata->vif.csa_active = false; 3126 3127 err = ieee80211_set_after_csa_beacon(sdata, &changed); 3128 if (err) 3129 return err; 3130 3131 ieee80211_bss_info_change_notify(sdata, changed); 3132 cfg80211_ch_switch_notify(sdata->dev, &sdata->csa_chandef); 3133 3134 if (!ieee80211_csa_needs_block_tx(local)) 3135 ieee80211_wake_queues_by_reason(&local->hw, 3136 IEEE80211_MAX_QUEUE_MAP, 3137 IEEE80211_QUEUE_STOP_REASON_CSA); 3138 3139 return 0; 3140 } 3141 3142 static void ieee80211_csa_finalize(struct ieee80211_sub_if_data *sdata) 3143 { 3144 if (__ieee80211_csa_finalize(sdata)) { 3145 sdata_info(sdata, "failed to finalize CSA, disconnecting\n"); 3146 cfg80211_stop_iface(sdata->local->hw.wiphy, &sdata->wdev, 3147 GFP_KERNEL); 3148 } 3149 } 3150 3151 void ieee80211_csa_finalize_work(struct work_struct *work) 3152 { 3153 struct ieee80211_sub_if_data *sdata = 3154 container_of(work, struct ieee80211_sub_if_data, 3155 csa_finalize_work); 3156 struct ieee80211_local *local = sdata->local; 3157 3158 sdata_lock(sdata); 3159 mutex_lock(&local->mtx); 3160 3161 /* AP might have been stopped while waiting for the lock. */ 3162 if (!sdata->vif.csa_active) 3163 goto unlock; 3164 3165 if (!ieee80211_sdata_running(sdata)) 3166 goto unlock; 3167 3168 ieee80211_csa_finalize(sdata); 3169 3170 unlock: 3171 mutex_unlock(&local->mtx); 3172 sdata_unlock(sdata); 3173 } 3174 3175 static int ieee80211_set_csa_beacon(struct ieee80211_sub_if_data *sdata, 3176 struct cfg80211_csa_settings *params, 3177 u32 *changed) 3178 { 3179 int err; 3180 3181 switch (sdata->vif.type) { 3182 case NL80211_IFTYPE_AP: 3183 sdata->u.ap.next_beacon = 3184 cfg80211_beacon_dup(¶ms->beacon_after); 3185 if (!sdata->u.ap.next_beacon) 3186 return -ENOMEM; 3187 3188 /* 3189 * With a count of 0, we don't have to wait for any 3190 * TBTT before switching, so complete the CSA 3191 * immediately. In theory, with a count == 1 we 3192 * should delay the switch until just before the next 3193 * TBTT, but that would complicate things so we switch 3194 * immediately too. If we would delay the switch 3195 * until the next TBTT, we would have to set the probe 3196 * response here. 3197 * 3198 * TODO: A channel switch with count <= 1 without 3199 * sending a CSA action frame is kind of useless, 3200 * because the clients won't know we're changing 3201 * channels. The action frame must be implemented 3202 * either here or in the userspace. 3203 */ 3204 if (params->count <= 1) 3205 break; 3206 3207 if ((params->n_counter_offsets_beacon > 3208 IEEE80211_MAX_CSA_COUNTERS_NUM) || 3209 (params->n_counter_offsets_presp > 3210 IEEE80211_MAX_CSA_COUNTERS_NUM)) 3211 return -EINVAL; 3212 3213 /* make sure we don't have garbage in other counters */ 3214 memset(sdata->csa_counter_offset_beacon, 0, 3215 sizeof(sdata->csa_counter_offset_beacon)); 3216 memset(sdata->csa_counter_offset_presp, 0, 3217 sizeof(sdata->csa_counter_offset_presp)); 3218 3219 memcpy(sdata->csa_counter_offset_beacon, 3220 params->counter_offsets_beacon, 3221 params->n_counter_offsets_beacon * sizeof(u16)); 3222 memcpy(sdata->csa_counter_offset_presp, 3223 params->counter_offsets_presp, 3224 params->n_counter_offsets_presp * sizeof(u16)); 3225 3226 err = ieee80211_assign_beacon(sdata, ¶ms->beacon_csa); 3227 if (err < 0) { 3228 kfree(sdata->u.ap.next_beacon); 3229 return err; 3230 } 3231 *changed |= err; 3232 3233 break; 3234 case NL80211_IFTYPE_ADHOC: 3235 if (!sdata->vif.bss_conf.ibss_joined) 3236 return -EINVAL; 3237 3238 if (params->chandef.width != sdata->u.ibss.chandef.width) 3239 return -EINVAL; 3240 3241 switch (params->chandef.width) { 3242 case NL80211_CHAN_WIDTH_40: 3243 if (cfg80211_get_chandef_type(¶ms->chandef) != 3244 cfg80211_get_chandef_type(&sdata->u.ibss.chandef)) 3245 return -EINVAL; 3246 case NL80211_CHAN_WIDTH_5: 3247 case NL80211_CHAN_WIDTH_10: 3248 case NL80211_CHAN_WIDTH_20_NOHT: 3249 case NL80211_CHAN_WIDTH_20: 3250 break; 3251 default: 3252 return -EINVAL; 3253 } 3254 3255 /* changes into another band are not supported */ 3256 if (sdata->u.ibss.chandef.chan->band != 3257 params->chandef.chan->band) 3258 return -EINVAL; 3259 3260 /* see comments in the NL80211_IFTYPE_AP block */ 3261 if (params->count > 1) { 3262 err = ieee80211_ibss_csa_beacon(sdata, params); 3263 if (err < 0) 3264 return err; 3265 *changed |= err; 3266 } 3267 3268 ieee80211_send_action_csa(sdata, params); 3269 3270 break; 3271 #ifdef CONFIG_MAC80211_MESH 3272 case NL80211_IFTYPE_MESH_POINT: { 3273 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh; 3274 3275 if (params->chandef.width != sdata->vif.bss_conf.chandef.width) 3276 return -EINVAL; 3277 3278 /* changes into another band are not supported */ 3279 if (sdata->vif.bss_conf.chandef.chan->band != 3280 params->chandef.chan->band) 3281 return -EINVAL; 3282 3283 if (ifmsh->csa_role == IEEE80211_MESH_CSA_ROLE_NONE) { 3284 ifmsh->csa_role = IEEE80211_MESH_CSA_ROLE_INIT; 3285 if (!ifmsh->pre_value) 3286 ifmsh->pre_value = 1; 3287 else 3288 ifmsh->pre_value++; 3289 } 3290 3291 /* see comments in the NL80211_IFTYPE_AP block */ 3292 if (params->count > 1) { 3293 err = ieee80211_mesh_csa_beacon(sdata, params); 3294 if (err < 0) { 3295 ifmsh->csa_role = IEEE80211_MESH_CSA_ROLE_NONE; 3296 return err; 3297 } 3298 *changed |= err; 3299 } 3300 3301 if (ifmsh->csa_role == IEEE80211_MESH_CSA_ROLE_INIT) 3302 ieee80211_send_action_csa(sdata, params); 3303 3304 break; 3305 } 3306 #endif 3307 default: 3308 return -EOPNOTSUPP; 3309 } 3310 3311 return 0; 3312 } 3313 3314 static int 3315 __ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev, 3316 struct cfg80211_csa_settings *params) 3317 { 3318 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 3319 struct ieee80211_local *local = sdata->local; 3320 struct ieee80211_chanctx_conf *conf; 3321 struct ieee80211_chanctx *chanctx; 3322 int err, num_chanctx, changed = 0; 3323 3324 sdata_assert_lock(sdata); 3325 lockdep_assert_held(&local->mtx); 3326 3327 if (!list_empty(&local->roc_list) || local->scanning) 3328 return -EBUSY; 3329 3330 if (sdata->wdev.cac_started) 3331 return -EBUSY; 3332 3333 if (cfg80211_chandef_identical(¶ms->chandef, 3334 &sdata->vif.bss_conf.chandef)) 3335 return -EINVAL; 3336 3337 mutex_lock(&local->chanctx_mtx); 3338 conf = rcu_dereference_protected(sdata->vif.chanctx_conf, 3339 lockdep_is_held(&local->chanctx_mtx)); 3340 if (!conf) { 3341 mutex_unlock(&local->chanctx_mtx); 3342 return -EBUSY; 3343 } 3344 3345 /* don't handle for multi-VIF cases */ 3346 chanctx = container_of(conf, struct ieee80211_chanctx, conf); 3347 if (ieee80211_chanctx_refcount(local, chanctx) > 1) { 3348 mutex_unlock(&local->chanctx_mtx); 3349 return -EBUSY; 3350 } 3351 num_chanctx = 0; 3352 list_for_each_entry_rcu(chanctx, &local->chanctx_list, list) 3353 num_chanctx++; 3354 mutex_unlock(&local->chanctx_mtx); 3355 3356 if (num_chanctx > 1) 3357 return -EBUSY; 3358 3359 /* don't allow another channel switch if one is already active. */ 3360 if (sdata->vif.csa_active) 3361 return -EBUSY; 3362 3363 err = ieee80211_set_csa_beacon(sdata, params, &changed); 3364 if (err) 3365 return err; 3366 3367 sdata->csa_radar_required = params->radar_required; 3368 sdata->csa_chandef = params->chandef; 3369 sdata->csa_block_tx = params->block_tx; 3370 sdata->csa_current_counter = params->count; 3371 sdata->vif.csa_active = true; 3372 3373 if (sdata->csa_block_tx) 3374 ieee80211_stop_queues_by_reason(&local->hw, 3375 IEEE80211_MAX_QUEUE_MAP, 3376 IEEE80211_QUEUE_STOP_REASON_CSA); 3377 3378 if (changed) { 3379 ieee80211_bss_info_change_notify(sdata, changed); 3380 drv_channel_switch_beacon(sdata, ¶ms->chandef); 3381 } else { 3382 /* if the beacon didn't change, we can finalize immediately */ 3383 ieee80211_csa_finalize(sdata); 3384 } 3385 3386 return 0; 3387 } 3388 3389 int ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev, 3390 struct cfg80211_csa_settings *params) 3391 { 3392 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 3393 struct ieee80211_local *local = sdata->local; 3394 int err; 3395 3396 mutex_lock(&local->mtx); 3397 err = __ieee80211_channel_switch(wiphy, dev, params); 3398 mutex_unlock(&local->mtx); 3399 3400 return err; 3401 } 3402 3403 static int ieee80211_mgmt_tx(struct wiphy *wiphy, struct wireless_dev *wdev, 3404 struct cfg80211_mgmt_tx_params *params, 3405 u64 *cookie) 3406 { 3407 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 3408 struct ieee80211_local *local = sdata->local; 3409 struct sk_buff *skb; 3410 struct sta_info *sta; 3411 const struct ieee80211_mgmt *mgmt = (void *)params->buf; 3412 bool need_offchan = false; 3413 u32 flags; 3414 int ret; 3415 u8 *data; 3416 3417 if (params->dont_wait_for_ack) 3418 flags = IEEE80211_TX_CTL_NO_ACK; 3419 else 3420 flags = IEEE80211_TX_INTFL_NL80211_FRAME_TX | 3421 IEEE80211_TX_CTL_REQ_TX_STATUS; 3422 3423 if (params->no_cck) 3424 flags |= IEEE80211_TX_CTL_NO_CCK_RATE; 3425 3426 switch (sdata->vif.type) { 3427 case NL80211_IFTYPE_ADHOC: 3428 if (!sdata->vif.bss_conf.ibss_joined) 3429 need_offchan = true; 3430 /* fall through */ 3431 #ifdef CONFIG_MAC80211_MESH 3432 case NL80211_IFTYPE_MESH_POINT: 3433 if (ieee80211_vif_is_mesh(&sdata->vif) && 3434 !sdata->u.mesh.mesh_id_len) 3435 need_offchan = true; 3436 /* fall through */ 3437 #endif 3438 case NL80211_IFTYPE_AP: 3439 case NL80211_IFTYPE_AP_VLAN: 3440 case NL80211_IFTYPE_P2P_GO: 3441 if (sdata->vif.type != NL80211_IFTYPE_ADHOC && 3442 !ieee80211_vif_is_mesh(&sdata->vif) && 3443 !rcu_access_pointer(sdata->bss->beacon)) 3444 need_offchan = true; 3445 if (!ieee80211_is_action(mgmt->frame_control) || 3446 mgmt->u.action.category == WLAN_CATEGORY_PUBLIC || 3447 mgmt->u.action.category == WLAN_CATEGORY_SELF_PROTECTED || 3448 mgmt->u.action.category == WLAN_CATEGORY_SPECTRUM_MGMT) 3449 break; 3450 rcu_read_lock(); 3451 sta = sta_info_get(sdata, mgmt->da); 3452 rcu_read_unlock(); 3453 if (!sta) 3454 return -ENOLINK; 3455 break; 3456 case NL80211_IFTYPE_STATION: 3457 case NL80211_IFTYPE_P2P_CLIENT: 3458 if (!sdata->u.mgd.associated) 3459 need_offchan = true; 3460 break; 3461 case NL80211_IFTYPE_P2P_DEVICE: 3462 need_offchan = true; 3463 break; 3464 default: 3465 return -EOPNOTSUPP; 3466 } 3467 3468 /* configurations requiring offchan cannot work if no channel has been 3469 * specified 3470 */ 3471 if (need_offchan && !params->chan) 3472 return -EINVAL; 3473 3474 mutex_lock(&local->mtx); 3475 3476 /* Check if the operating channel is the requested channel */ 3477 if (!need_offchan) { 3478 struct ieee80211_chanctx_conf *chanctx_conf; 3479 3480 rcu_read_lock(); 3481 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); 3482 3483 if (chanctx_conf) { 3484 need_offchan = params->chan && 3485 (params->chan != 3486 chanctx_conf->def.chan); 3487 } else if (!params->chan) { 3488 ret = -EINVAL; 3489 rcu_read_unlock(); 3490 goto out_unlock; 3491 } else { 3492 need_offchan = true; 3493 } 3494 rcu_read_unlock(); 3495 } 3496 3497 if (need_offchan && !params->offchan) { 3498 ret = -EBUSY; 3499 goto out_unlock; 3500 } 3501 3502 skb = dev_alloc_skb(local->hw.extra_tx_headroom + params->len); 3503 if (!skb) { 3504 ret = -ENOMEM; 3505 goto out_unlock; 3506 } 3507 skb_reserve(skb, local->hw.extra_tx_headroom); 3508 3509 data = skb_put(skb, params->len); 3510 memcpy(data, params->buf, params->len); 3511 3512 /* Update CSA counters */ 3513 if (sdata->vif.csa_active && 3514 (sdata->vif.type == NL80211_IFTYPE_AP || 3515 sdata->vif.type == NL80211_IFTYPE_ADHOC) && 3516 params->n_csa_offsets) { 3517 int i; 3518 u8 c = sdata->csa_current_counter; 3519 3520 for (i = 0; i < params->n_csa_offsets; i++) 3521 data[params->csa_offsets[i]] = c; 3522 } 3523 3524 IEEE80211_SKB_CB(skb)->flags = flags; 3525 3526 skb->dev = sdata->dev; 3527 3528 if (!need_offchan) { 3529 *cookie = (unsigned long) skb; 3530 ieee80211_tx_skb(sdata, skb); 3531 ret = 0; 3532 goto out_unlock; 3533 } 3534 3535 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_TX_OFFCHAN | 3536 IEEE80211_TX_INTFL_OFFCHAN_TX_OK; 3537 if (local->hw.flags & IEEE80211_HW_QUEUE_CONTROL) 3538 IEEE80211_SKB_CB(skb)->hw_queue = 3539 local->hw.offchannel_tx_hw_queue; 3540 3541 /* This will handle all kinds of coalescing and immediate TX */ 3542 ret = ieee80211_start_roc_work(local, sdata, params->chan, 3543 params->wait, cookie, skb, 3544 IEEE80211_ROC_TYPE_MGMT_TX); 3545 if (ret) 3546 kfree_skb(skb); 3547 out_unlock: 3548 mutex_unlock(&local->mtx); 3549 return ret; 3550 } 3551 3552 static int ieee80211_mgmt_tx_cancel_wait(struct wiphy *wiphy, 3553 struct wireless_dev *wdev, 3554 u64 cookie) 3555 { 3556 struct ieee80211_local *local = wiphy_priv(wiphy); 3557 3558 return ieee80211_cancel_roc(local, cookie, true); 3559 } 3560 3561 static void ieee80211_mgmt_frame_register(struct wiphy *wiphy, 3562 struct wireless_dev *wdev, 3563 u16 frame_type, bool reg) 3564 { 3565 struct ieee80211_local *local = wiphy_priv(wiphy); 3566 3567 switch (frame_type) { 3568 case IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_PROBE_REQ: 3569 if (reg) 3570 local->probe_req_reg++; 3571 else 3572 local->probe_req_reg--; 3573 3574 if (!local->open_count) 3575 break; 3576 3577 ieee80211_queue_work(&local->hw, &local->reconfig_filter); 3578 break; 3579 default: 3580 break; 3581 } 3582 } 3583 3584 static int ieee80211_set_antenna(struct wiphy *wiphy, u32 tx_ant, u32 rx_ant) 3585 { 3586 struct ieee80211_local *local = wiphy_priv(wiphy); 3587 3588 if (local->started) 3589 return -EOPNOTSUPP; 3590 3591 return drv_set_antenna(local, tx_ant, rx_ant); 3592 } 3593 3594 static int ieee80211_get_antenna(struct wiphy *wiphy, u32 *tx_ant, u32 *rx_ant) 3595 { 3596 struct ieee80211_local *local = wiphy_priv(wiphy); 3597 3598 return drv_get_antenna(local, tx_ant, rx_ant); 3599 } 3600 3601 static int ieee80211_set_ringparam(struct wiphy *wiphy, u32 tx, u32 rx) 3602 { 3603 struct ieee80211_local *local = wiphy_priv(wiphy); 3604 3605 return drv_set_ringparam(local, tx, rx); 3606 } 3607 3608 static void ieee80211_get_ringparam(struct wiphy *wiphy, 3609 u32 *tx, u32 *tx_max, u32 *rx, u32 *rx_max) 3610 { 3611 struct ieee80211_local *local = wiphy_priv(wiphy); 3612 3613 drv_get_ringparam(local, tx, tx_max, rx, rx_max); 3614 } 3615 3616 static int ieee80211_set_rekey_data(struct wiphy *wiphy, 3617 struct net_device *dev, 3618 struct cfg80211_gtk_rekey_data *data) 3619 { 3620 struct ieee80211_local *local = wiphy_priv(wiphy); 3621 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 3622 3623 if (!local->ops->set_rekey_data) 3624 return -EOPNOTSUPP; 3625 3626 drv_set_rekey_data(local, sdata, data); 3627 3628 return 0; 3629 } 3630 3631 static int ieee80211_probe_client(struct wiphy *wiphy, struct net_device *dev, 3632 const u8 *peer, u64 *cookie) 3633 { 3634 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 3635 struct ieee80211_local *local = sdata->local; 3636 struct ieee80211_qos_hdr *nullfunc; 3637 struct sk_buff *skb; 3638 int size = sizeof(*nullfunc); 3639 __le16 fc; 3640 bool qos; 3641 struct ieee80211_tx_info *info; 3642 struct sta_info *sta; 3643 struct ieee80211_chanctx_conf *chanctx_conf; 3644 enum ieee80211_band band; 3645 3646 rcu_read_lock(); 3647 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); 3648 if (WARN_ON(!chanctx_conf)) { 3649 rcu_read_unlock(); 3650 return -EINVAL; 3651 } 3652 band = chanctx_conf->def.chan->band; 3653 sta = sta_info_get_bss(sdata, peer); 3654 if (sta) { 3655 qos = test_sta_flag(sta, WLAN_STA_WME); 3656 } else { 3657 rcu_read_unlock(); 3658 return -ENOLINK; 3659 } 3660 3661 if (qos) { 3662 fc = cpu_to_le16(IEEE80211_FTYPE_DATA | 3663 IEEE80211_STYPE_QOS_NULLFUNC | 3664 IEEE80211_FCTL_FROMDS); 3665 } else { 3666 size -= 2; 3667 fc = cpu_to_le16(IEEE80211_FTYPE_DATA | 3668 IEEE80211_STYPE_NULLFUNC | 3669 IEEE80211_FCTL_FROMDS); 3670 } 3671 3672 skb = dev_alloc_skb(local->hw.extra_tx_headroom + size); 3673 if (!skb) { 3674 rcu_read_unlock(); 3675 return -ENOMEM; 3676 } 3677 3678 skb->dev = dev; 3679 3680 skb_reserve(skb, local->hw.extra_tx_headroom); 3681 3682 nullfunc = (void *) skb_put(skb, size); 3683 nullfunc->frame_control = fc; 3684 nullfunc->duration_id = 0; 3685 memcpy(nullfunc->addr1, sta->sta.addr, ETH_ALEN); 3686 memcpy(nullfunc->addr2, sdata->vif.addr, ETH_ALEN); 3687 memcpy(nullfunc->addr3, sdata->vif.addr, ETH_ALEN); 3688 nullfunc->seq_ctrl = 0; 3689 3690 info = IEEE80211_SKB_CB(skb); 3691 3692 info->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS | 3693 IEEE80211_TX_INTFL_NL80211_FRAME_TX; 3694 3695 skb_set_queue_mapping(skb, IEEE80211_AC_VO); 3696 skb->priority = 7; 3697 if (qos) 3698 nullfunc->qos_ctrl = cpu_to_le16(7); 3699 3700 local_bh_disable(); 3701 ieee80211_xmit(sdata, skb, band); 3702 local_bh_enable(); 3703 rcu_read_unlock(); 3704 3705 *cookie = (unsigned long) skb; 3706 return 0; 3707 } 3708 3709 static int ieee80211_cfg_get_channel(struct wiphy *wiphy, 3710 struct wireless_dev *wdev, 3711 struct cfg80211_chan_def *chandef) 3712 { 3713 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 3714 struct ieee80211_local *local = wiphy_priv(wiphy); 3715 struct ieee80211_chanctx_conf *chanctx_conf; 3716 int ret = -ENODATA; 3717 3718 rcu_read_lock(); 3719 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); 3720 if (chanctx_conf) { 3721 *chandef = chanctx_conf->def; 3722 ret = 0; 3723 } else if (local->open_count > 0 && 3724 local->open_count == local->monitors && 3725 sdata->vif.type == NL80211_IFTYPE_MONITOR) { 3726 if (local->use_chanctx) 3727 *chandef = local->monitor_chandef; 3728 else 3729 *chandef = local->_oper_chandef; 3730 ret = 0; 3731 } 3732 rcu_read_unlock(); 3733 3734 return ret; 3735 } 3736 3737 #ifdef CONFIG_PM 3738 static void ieee80211_set_wakeup(struct wiphy *wiphy, bool enabled) 3739 { 3740 drv_set_wakeup(wiphy_priv(wiphy), enabled); 3741 } 3742 #endif 3743 3744 static int ieee80211_set_qos_map(struct wiphy *wiphy, 3745 struct net_device *dev, 3746 struct cfg80211_qos_map *qos_map) 3747 { 3748 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 3749 struct mac80211_qos_map *new_qos_map, *old_qos_map; 3750 3751 if (qos_map) { 3752 new_qos_map = kzalloc(sizeof(*new_qos_map), GFP_KERNEL); 3753 if (!new_qos_map) 3754 return -ENOMEM; 3755 memcpy(&new_qos_map->qos_map, qos_map, sizeof(*qos_map)); 3756 } else { 3757 /* A NULL qos_map was passed to disable QoS mapping */ 3758 new_qos_map = NULL; 3759 } 3760 3761 old_qos_map = sdata_dereference(sdata->qos_map, sdata); 3762 rcu_assign_pointer(sdata->qos_map, new_qos_map); 3763 if (old_qos_map) 3764 kfree_rcu(old_qos_map, rcu_head); 3765 3766 return 0; 3767 } 3768 3769 static int ieee80211_set_ap_chanwidth(struct wiphy *wiphy, 3770 struct net_device *dev, 3771 struct cfg80211_chan_def *chandef) 3772 { 3773 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 3774 int ret; 3775 u32 changed = 0; 3776 3777 ret = ieee80211_vif_change_bandwidth(sdata, chandef, &changed); 3778 if (ret == 0) 3779 ieee80211_bss_info_change_notify(sdata, changed); 3780 3781 return ret; 3782 } 3783 3784 const struct cfg80211_ops mac80211_config_ops = { 3785 .add_virtual_intf = ieee80211_add_iface, 3786 .del_virtual_intf = ieee80211_del_iface, 3787 .change_virtual_intf = ieee80211_change_iface, 3788 .start_p2p_device = ieee80211_start_p2p_device, 3789 .stop_p2p_device = ieee80211_stop_p2p_device, 3790 .add_key = ieee80211_add_key, 3791 .del_key = ieee80211_del_key, 3792 .get_key = ieee80211_get_key, 3793 .set_default_key = ieee80211_config_default_key, 3794 .set_default_mgmt_key = ieee80211_config_default_mgmt_key, 3795 .start_ap = ieee80211_start_ap, 3796 .change_beacon = ieee80211_change_beacon, 3797 .stop_ap = ieee80211_stop_ap, 3798 .add_station = ieee80211_add_station, 3799 .del_station = ieee80211_del_station, 3800 .change_station = ieee80211_change_station, 3801 .get_station = ieee80211_get_station, 3802 .dump_station = ieee80211_dump_station, 3803 .dump_survey = ieee80211_dump_survey, 3804 #ifdef CONFIG_MAC80211_MESH 3805 .add_mpath = ieee80211_add_mpath, 3806 .del_mpath = ieee80211_del_mpath, 3807 .change_mpath = ieee80211_change_mpath, 3808 .get_mpath = ieee80211_get_mpath, 3809 .dump_mpath = ieee80211_dump_mpath, 3810 .update_mesh_config = ieee80211_update_mesh_config, 3811 .get_mesh_config = ieee80211_get_mesh_config, 3812 .join_mesh = ieee80211_join_mesh, 3813 .leave_mesh = ieee80211_leave_mesh, 3814 #endif 3815 .change_bss = ieee80211_change_bss, 3816 .set_txq_params = ieee80211_set_txq_params, 3817 .set_monitor_channel = ieee80211_set_monitor_channel, 3818 .suspend = ieee80211_suspend, 3819 .resume = ieee80211_resume, 3820 .scan = ieee80211_scan, 3821 .sched_scan_start = ieee80211_sched_scan_start, 3822 .sched_scan_stop = ieee80211_sched_scan_stop, 3823 .auth = ieee80211_auth, 3824 .assoc = ieee80211_assoc, 3825 .deauth = ieee80211_deauth, 3826 .disassoc = ieee80211_disassoc, 3827 .join_ibss = ieee80211_join_ibss, 3828 .leave_ibss = ieee80211_leave_ibss, 3829 .set_mcast_rate = ieee80211_set_mcast_rate, 3830 .set_wiphy_params = ieee80211_set_wiphy_params, 3831 .set_tx_power = ieee80211_set_tx_power, 3832 .get_tx_power = ieee80211_get_tx_power, 3833 .set_wds_peer = ieee80211_set_wds_peer, 3834 .rfkill_poll = ieee80211_rfkill_poll, 3835 CFG80211_TESTMODE_CMD(ieee80211_testmode_cmd) 3836 CFG80211_TESTMODE_DUMP(ieee80211_testmode_dump) 3837 .set_power_mgmt = ieee80211_set_power_mgmt, 3838 .set_bitrate_mask = ieee80211_set_bitrate_mask, 3839 .remain_on_channel = ieee80211_remain_on_channel, 3840 .cancel_remain_on_channel = ieee80211_cancel_remain_on_channel, 3841 .mgmt_tx = ieee80211_mgmt_tx, 3842 .mgmt_tx_cancel_wait = ieee80211_mgmt_tx_cancel_wait, 3843 .set_cqm_rssi_config = ieee80211_set_cqm_rssi_config, 3844 .mgmt_frame_register = ieee80211_mgmt_frame_register, 3845 .set_antenna = ieee80211_set_antenna, 3846 .get_antenna = ieee80211_get_antenna, 3847 .set_ringparam = ieee80211_set_ringparam, 3848 .get_ringparam = ieee80211_get_ringparam, 3849 .set_rekey_data = ieee80211_set_rekey_data, 3850 .tdls_oper = ieee80211_tdls_oper, 3851 .tdls_mgmt = ieee80211_tdls_mgmt, 3852 .probe_client = ieee80211_probe_client, 3853 .set_noack_map = ieee80211_set_noack_map, 3854 #ifdef CONFIG_PM 3855 .set_wakeup = ieee80211_set_wakeup, 3856 #endif 3857 .get_et_sset_count = ieee80211_get_et_sset_count, 3858 .get_et_stats = ieee80211_get_et_stats, 3859 .get_et_strings = ieee80211_get_et_strings, 3860 .get_channel = ieee80211_cfg_get_channel, 3861 .start_radar_detection = ieee80211_start_radar_detection, 3862 .channel_switch = ieee80211_channel_switch, 3863 .set_qos_map = ieee80211_set_qos_map, 3864 .set_ap_chanwidth = ieee80211_set_ap_chanwidth, 3865 }; 3866