1 /* 2 * mac80211 configuration hooks for cfg80211 3 * 4 * Copyright 2006-2010 Johannes Berg <johannes@sipsolutions.net> 5 * 6 * This file is GPLv2 as found in COPYING. 7 */ 8 9 #include <linux/ieee80211.h> 10 #include <linux/nl80211.h> 11 #include <linux/rtnetlink.h> 12 #include <linux/slab.h> 13 #include <net/net_namespace.h> 14 #include <linux/rcupdate.h> 15 #include <linux/if_ether.h> 16 #include <net/cfg80211.h> 17 #include "ieee80211_i.h" 18 #include "driver-ops.h" 19 #include "cfg.h" 20 #include "rate.h" 21 #include "mesh.h" 22 23 static struct wireless_dev *ieee80211_add_iface(struct wiphy *wiphy, 24 const char *name, 25 enum nl80211_iftype type, 26 u32 *flags, 27 struct vif_params *params) 28 { 29 struct ieee80211_local *local = wiphy_priv(wiphy); 30 struct wireless_dev *wdev; 31 struct ieee80211_sub_if_data *sdata; 32 int err; 33 34 err = ieee80211_if_add(local, name, &wdev, type, params); 35 if (err) 36 return ERR_PTR(err); 37 38 if (type == NL80211_IFTYPE_MONITOR && flags) { 39 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 40 sdata->u.mntr_flags = *flags; 41 } 42 43 return wdev; 44 } 45 46 static int ieee80211_del_iface(struct wiphy *wiphy, struct wireless_dev *wdev) 47 { 48 ieee80211_if_remove(IEEE80211_WDEV_TO_SUB_IF(wdev)); 49 50 return 0; 51 } 52 53 static int ieee80211_change_iface(struct wiphy *wiphy, 54 struct net_device *dev, 55 enum nl80211_iftype type, u32 *flags, 56 struct vif_params *params) 57 { 58 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 59 int ret; 60 61 ret = ieee80211_if_change_type(sdata, type); 62 if (ret) 63 return ret; 64 65 if (type == NL80211_IFTYPE_AP_VLAN && 66 params && params->use_4addr == 0) 67 RCU_INIT_POINTER(sdata->u.vlan.sta, NULL); 68 else if (type == NL80211_IFTYPE_STATION && 69 params && params->use_4addr >= 0) 70 sdata->u.mgd.use_4addr = params->use_4addr; 71 72 if (sdata->vif.type == NL80211_IFTYPE_MONITOR && flags) { 73 struct ieee80211_local *local = sdata->local; 74 75 if (ieee80211_sdata_running(sdata)) { 76 u32 mask = MONITOR_FLAG_COOK_FRAMES | 77 MONITOR_FLAG_ACTIVE; 78 79 /* 80 * Prohibit MONITOR_FLAG_COOK_FRAMES and 81 * MONITOR_FLAG_ACTIVE to be changed while the 82 * interface is up. 83 * Else we would need to add a lot of cruft 84 * to update everything: 85 * cooked_mntrs, monitor and all fif_* counters 86 * reconfigure hardware 87 */ 88 if ((*flags & mask) != (sdata->u.mntr_flags & mask)) 89 return -EBUSY; 90 91 ieee80211_adjust_monitor_flags(sdata, -1); 92 sdata->u.mntr_flags = *flags; 93 ieee80211_adjust_monitor_flags(sdata, 1); 94 95 ieee80211_configure_filter(local); 96 } else { 97 /* 98 * Because the interface is down, ieee80211_do_stop 99 * and ieee80211_do_open take care of "everything" 100 * mentioned in the comment above. 101 */ 102 sdata->u.mntr_flags = *flags; 103 } 104 } 105 106 return 0; 107 } 108 109 static int ieee80211_start_p2p_device(struct wiphy *wiphy, 110 struct wireless_dev *wdev) 111 { 112 return ieee80211_do_open(wdev, true); 113 } 114 115 static void ieee80211_stop_p2p_device(struct wiphy *wiphy, 116 struct wireless_dev *wdev) 117 { 118 ieee80211_sdata_stop(IEEE80211_WDEV_TO_SUB_IF(wdev)); 119 } 120 121 static int ieee80211_set_noack_map(struct wiphy *wiphy, 122 struct net_device *dev, 123 u16 noack_map) 124 { 125 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 126 127 sdata->noack_map = noack_map; 128 return 0; 129 } 130 131 static int ieee80211_add_key(struct wiphy *wiphy, struct net_device *dev, 132 u8 key_idx, bool pairwise, const u8 *mac_addr, 133 struct key_params *params) 134 { 135 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 136 struct ieee80211_local *local = sdata->local; 137 struct sta_info *sta = NULL; 138 const struct ieee80211_cipher_scheme *cs = NULL; 139 struct ieee80211_key *key; 140 int err; 141 142 if (!ieee80211_sdata_running(sdata)) 143 return -ENETDOWN; 144 145 /* reject WEP and TKIP keys if WEP failed to initialize */ 146 switch (params->cipher) { 147 case WLAN_CIPHER_SUITE_WEP40: 148 case WLAN_CIPHER_SUITE_TKIP: 149 case WLAN_CIPHER_SUITE_WEP104: 150 if (IS_ERR(local->wep_tx_tfm)) 151 return -EINVAL; 152 break; 153 case WLAN_CIPHER_SUITE_CCMP: 154 case WLAN_CIPHER_SUITE_AES_CMAC: 155 case WLAN_CIPHER_SUITE_GCMP: 156 break; 157 default: 158 cs = ieee80211_cs_get(local, params->cipher, sdata->vif.type); 159 break; 160 } 161 162 key = ieee80211_key_alloc(params->cipher, key_idx, params->key_len, 163 params->key, params->seq_len, params->seq, 164 cs); 165 if (IS_ERR(key)) 166 return PTR_ERR(key); 167 168 if (pairwise) 169 key->conf.flags |= IEEE80211_KEY_FLAG_PAIRWISE; 170 171 mutex_lock(&local->sta_mtx); 172 173 if (mac_addr) { 174 if (ieee80211_vif_is_mesh(&sdata->vif)) 175 sta = sta_info_get(sdata, mac_addr); 176 else 177 sta = sta_info_get_bss(sdata, mac_addr); 178 /* 179 * The ASSOC test makes sure the driver is ready to 180 * receive the key. When wpa_supplicant has roamed 181 * using FT, it attempts to set the key before 182 * association has completed, this rejects that attempt 183 * so it will set the key again after assocation. 184 * 185 * TODO: accept the key if we have a station entry and 186 * add it to the device after the station. 187 */ 188 if (!sta || !test_sta_flag(sta, WLAN_STA_ASSOC)) { 189 ieee80211_key_free_unused(key); 190 err = -ENOENT; 191 goto out_unlock; 192 } 193 } 194 195 switch (sdata->vif.type) { 196 case NL80211_IFTYPE_STATION: 197 if (sdata->u.mgd.mfp != IEEE80211_MFP_DISABLED) 198 key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT; 199 break; 200 case NL80211_IFTYPE_AP: 201 case NL80211_IFTYPE_AP_VLAN: 202 /* Keys without a station are used for TX only */ 203 if (key->sta && test_sta_flag(key->sta, WLAN_STA_MFP)) 204 key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT; 205 break; 206 case NL80211_IFTYPE_ADHOC: 207 /* no MFP (yet) */ 208 break; 209 case NL80211_IFTYPE_MESH_POINT: 210 #ifdef CONFIG_MAC80211_MESH 211 if (sdata->u.mesh.security != IEEE80211_MESH_SEC_NONE) 212 key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT; 213 break; 214 #endif 215 case NL80211_IFTYPE_WDS: 216 case NL80211_IFTYPE_MONITOR: 217 case NL80211_IFTYPE_P2P_DEVICE: 218 case NL80211_IFTYPE_UNSPECIFIED: 219 case NUM_NL80211_IFTYPES: 220 case NL80211_IFTYPE_P2P_CLIENT: 221 case NL80211_IFTYPE_P2P_GO: 222 /* shouldn't happen */ 223 WARN_ON_ONCE(1); 224 break; 225 } 226 227 if (sta) 228 sta->cipher_scheme = cs; 229 230 err = ieee80211_key_link(key, sdata, sta); 231 232 out_unlock: 233 mutex_unlock(&local->sta_mtx); 234 235 return err; 236 } 237 238 static int ieee80211_del_key(struct wiphy *wiphy, struct net_device *dev, 239 u8 key_idx, bool pairwise, const u8 *mac_addr) 240 { 241 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 242 struct ieee80211_local *local = sdata->local; 243 struct sta_info *sta; 244 struct ieee80211_key *key = NULL; 245 int ret; 246 247 mutex_lock(&local->sta_mtx); 248 mutex_lock(&local->key_mtx); 249 250 if (mac_addr) { 251 ret = -ENOENT; 252 253 sta = sta_info_get_bss(sdata, mac_addr); 254 if (!sta) 255 goto out_unlock; 256 257 if (pairwise) 258 key = key_mtx_dereference(local, sta->ptk[key_idx]); 259 else 260 key = key_mtx_dereference(local, sta->gtk[key_idx]); 261 } else 262 key = key_mtx_dereference(local, sdata->keys[key_idx]); 263 264 if (!key) { 265 ret = -ENOENT; 266 goto out_unlock; 267 } 268 269 ieee80211_key_free(key, true); 270 271 ret = 0; 272 out_unlock: 273 mutex_unlock(&local->key_mtx); 274 mutex_unlock(&local->sta_mtx); 275 276 return ret; 277 } 278 279 static int ieee80211_get_key(struct wiphy *wiphy, struct net_device *dev, 280 u8 key_idx, bool pairwise, const u8 *mac_addr, 281 void *cookie, 282 void (*callback)(void *cookie, 283 struct key_params *params)) 284 { 285 struct ieee80211_sub_if_data *sdata; 286 struct sta_info *sta = NULL; 287 u8 seq[6] = {0}; 288 struct key_params params; 289 struct ieee80211_key *key = NULL; 290 u64 pn64; 291 u32 iv32; 292 u16 iv16; 293 int err = -ENOENT; 294 295 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 296 297 rcu_read_lock(); 298 299 if (mac_addr) { 300 sta = sta_info_get_bss(sdata, mac_addr); 301 if (!sta) 302 goto out; 303 304 if (pairwise) 305 key = rcu_dereference(sta->ptk[key_idx]); 306 else if (key_idx < NUM_DEFAULT_KEYS) 307 key = rcu_dereference(sta->gtk[key_idx]); 308 } else 309 key = rcu_dereference(sdata->keys[key_idx]); 310 311 if (!key) 312 goto out; 313 314 memset(¶ms, 0, sizeof(params)); 315 316 params.cipher = key->conf.cipher; 317 318 switch (key->conf.cipher) { 319 case WLAN_CIPHER_SUITE_TKIP: 320 iv32 = key->u.tkip.tx.iv32; 321 iv16 = key->u.tkip.tx.iv16; 322 323 if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE) 324 drv_get_tkip_seq(sdata->local, 325 key->conf.hw_key_idx, 326 &iv32, &iv16); 327 328 seq[0] = iv16 & 0xff; 329 seq[1] = (iv16 >> 8) & 0xff; 330 seq[2] = iv32 & 0xff; 331 seq[3] = (iv32 >> 8) & 0xff; 332 seq[4] = (iv32 >> 16) & 0xff; 333 seq[5] = (iv32 >> 24) & 0xff; 334 params.seq = seq; 335 params.seq_len = 6; 336 break; 337 case WLAN_CIPHER_SUITE_CCMP: 338 pn64 = atomic64_read(&key->u.ccmp.tx_pn); 339 seq[0] = pn64; 340 seq[1] = pn64 >> 8; 341 seq[2] = pn64 >> 16; 342 seq[3] = pn64 >> 24; 343 seq[4] = pn64 >> 32; 344 seq[5] = pn64 >> 40; 345 params.seq = seq; 346 params.seq_len = 6; 347 break; 348 case WLAN_CIPHER_SUITE_AES_CMAC: 349 pn64 = atomic64_read(&key->u.aes_cmac.tx_pn); 350 seq[0] = pn64; 351 seq[1] = pn64 >> 8; 352 seq[2] = pn64 >> 16; 353 seq[3] = pn64 >> 24; 354 seq[4] = pn64 >> 32; 355 seq[5] = pn64 >> 40; 356 params.seq = seq; 357 params.seq_len = 6; 358 break; 359 } 360 361 params.key = key->conf.key; 362 params.key_len = key->conf.keylen; 363 364 callback(cookie, ¶ms); 365 err = 0; 366 367 out: 368 rcu_read_unlock(); 369 return err; 370 } 371 372 static int ieee80211_config_default_key(struct wiphy *wiphy, 373 struct net_device *dev, 374 u8 key_idx, bool uni, 375 bool multi) 376 { 377 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 378 379 ieee80211_set_default_key(sdata, key_idx, uni, multi); 380 381 return 0; 382 } 383 384 static int ieee80211_config_default_mgmt_key(struct wiphy *wiphy, 385 struct net_device *dev, 386 u8 key_idx) 387 { 388 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 389 390 ieee80211_set_default_mgmt_key(sdata, key_idx); 391 392 return 0; 393 } 394 395 void sta_set_rate_info_tx(struct sta_info *sta, 396 const struct ieee80211_tx_rate *rate, 397 struct rate_info *rinfo) 398 { 399 rinfo->flags = 0; 400 if (rate->flags & IEEE80211_TX_RC_MCS) { 401 rinfo->flags |= RATE_INFO_FLAGS_MCS; 402 rinfo->mcs = rate->idx; 403 } else if (rate->flags & IEEE80211_TX_RC_VHT_MCS) { 404 rinfo->flags |= RATE_INFO_FLAGS_VHT_MCS; 405 rinfo->mcs = ieee80211_rate_get_vht_mcs(rate); 406 rinfo->nss = ieee80211_rate_get_vht_nss(rate); 407 } else { 408 struct ieee80211_supported_band *sband; 409 int shift = ieee80211_vif_get_shift(&sta->sdata->vif); 410 u16 brate; 411 412 sband = sta->local->hw.wiphy->bands[ 413 ieee80211_get_sdata_band(sta->sdata)]; 414 brate = sband->bitrates[rate->idx].bitrate; 415 rinfo->legacy = DIV_ROUND_UP(brate, 1 << shift); 416 } 417 if (rate->flags & IEEE80211_TX_RC_40_MHZ_WIDTH) 418 rinfo->flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH; 419 if (rate->flags & IEEE80211_TX_RC_80_MHZ_WIDTH) 420 rinfo->flags |= RATE_INFO_FLAGS_80_MHZ_WIDTH; 421 if (rate->flags & IEEE80211_TX_RC_160_MHZ_WIDTH) 422 rinfo->flags |= RATE_INFO_FLAGS_160_MHZ_WIDTH; 423 if (rate->flags & IEEE80211_TX_RC_SHORT_GI) 424 rinfo->flags |= RATE_INFO_FLAGS_SHORT_GI; 425 } 426 427 void sta_set_rate_info_rx(struct sta_info *sta, struct rate_info *rinfo) 428 { 429 rinfo->flags = 0; 430 431 if (sta->last_rx_rate_flag & RX_FLAG_HT) { 432 rinfo->flags |= RATE_INFO_FLAGS_MCS; 433 rinfo->mcs = sta->last_rx_rate_idx; 434 } else if (sta->last_rx_rate_flag & RX_FLAG_VHT) { 435 rinfo->flags |= RATE_INFO_FLAGS_VHT_MCS; 436 rinfo->nss = sta->last_rx_rate_vht_nss; 437 rinfo->mcs = sta->last_rx_rate_idx; 438 } else { 439 struct ieee80211_supported_band *sband; 440 int shift = ieee80211_vif_get_shift(&sta->sdata->vif); 441 u16 brate; 442 443 sband = sta->local->hw.wiphy->bands[ 444 ieee80211_get_sdata_band(sta->sdata)]; 445 brate = sband->bitrates[sta->last_rx_rate_idx].bitrate; 446 rinfo->legacy = DIV_ROUND_UP(brate, 1 << shift); 447 } 448 449 if (sta->last_rx_rate_flag & RX_FLAG_40MHZ) 450 rinfo->flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH; 451 if (sta->last_rx_rate_flag & RX_FLAG_SHORT_GI) 452 rinfo->flags |= RATE_INFO_FLAGS_SHORT_GI; 453 if (sta->last_rx_rate_flag & RX_FLAG_80MHZ) 454 rinfo->flags |= RATE_INFO_FLAGS_80_MHZ_WIDTH; 455 if (sta->last_rx_rate_flag & RX_FLAG_80P80MHZ) 456 rinfo->flags |= RATE_INFO_FLAGS_80P80_MHZ_WIDTH; 457 if (sta->last_rx_rate_flag & RX_FLAG_160MHZ) 458 rinfo->flags |= RATE_INFO_FLAGS_160_MHZ_WIDTH; 459 } 460 461 static void sta_set_sinfo(struct sta_info *sta, struct station_info *sinfo) 462 { 463 struct ieee80211_sub_if_data *sdata = sta->sdata; 464 struct ieee80211_local *local = sdata->local; 465 struct timespec uptime; 466 u64 packets = 0; 467 int i, ac; 468 469 sinfo->generation = sdata->local->sta_generation; 470 471 sinfo->filled = STATION_INFO_INACTIVE_TIME | 472 STATION_INFO_RX_BYTES64 | 473 STATION_INFO_TX_BYTES64 | 474 STATION_INFO_RX_PACKETS | 475 STATION_INFO_TX_PACKETS | 476 STATION_INFO_TX_RETRIES | 477 STATION_INFO_TX_FAILED | 478 STATION_INFO_TX_BITRATE | 479 STATION_INFO_RX_BITRATE | 480 STATION_INFO_RX_DROP_MISC | 481 STATION_INFO_BSS_PARAM | 482 STATION_INFO_CONNECTED_TIME | 483 STATION_INFO_STA_FLAGS | 484 STATION_INFO_BEACON_LOSS_COUNT; 485 486 do_posix_clock_monotonic_gettime(&uptime); 487 sinfo->connected_time = uptime.tv_sec - sta->last_connected; 488 489 sinfo->inactive_time = jiffies_to_msecs(jiffies - sta->last_rx); 490 sinfo->tx_bytes = 0; 491 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) { 492 sinfo->tx_bytes += sta->tx_bytes[ac]; 493 packets += sta->tx_packets[ac]; 494 } 495 sinfo->tx_packets = packets; 496 sinfo->rx_bytes = sta->rx_bytes; 497 sinfo->rx_packets = sta->rx_packets; 498 sinfo->tx_retries = sta->tx_retry_count; 499 sinfo->tx_failed = sta->tx_retry_failed; 500 sinfo->rx_dropped_misc = sta->rx_dropped; 501 sinfo->beacon_loss_count = sta->beacon_loss_count; 502 503 if ((sta->local->hw.flags & IEEE80211_HW_SIGNAL_DBM) || 504 (sta->local->hw.flags & IEEE80211_HW_SIGNAL_UNSPEC)) { 505 sinfo->filled |= STATION_INFO_SIGNAL | STATION_INFO_SIGNAL_AVG; 506 if (!local->ops->get_rssi || 507 drv_get_rssi(local, sdata, &sta->sta, &sinfo->signal)) 508 sinfo->signal = (s8)sta->last_signal; 509 sinfo->signal_avg = (s8) -ewma_read(&sta->avg_signal); 510 } 511 if (sta->chains) { 512 sinfo->filled |= STATION_INFO_CHAIN_SIGNAL | 513 STATION_INFO_CHAIN_SIGNAL_AVG; 514 515 sinfo->chains = sta->chains; 516 for (i = 0; i < ARRAY_SIZE(sinfo->chain_signal); i++) { 517 sinfo->chain_signal[i] = sta->chain_signal_last[i]; 518 sinfo->chain_signal_avg[i] = 519 (s8) -ewma_read(&sta->chain_signal_avg[i]); 520 } 521 } 522 523 sta_set_rate_info_tx(sta, &sta->last_tx_rate, &sinfo->txrate); 524 sta_set_rate_info_rx(sta, &sinfo->rxrate); 525 526 if (ieee80211_vif_is_mesh(&sdata->vif)) { 527 #ifdef CONFIG_MAC80211_MESH 528 sinfo->filled |= STATION_INFO_LLID | 529 STATION_INFO_PLID | 530 STATION_INFO_PLINK_STATE | 531 STATION_INFO_LOCAL_PM | 532 STATION_INFO_PEER_PM | 533 STATION_INFO_NONPEER_PM; 534 535 sinfo->llid = sta->llid; 536 sinfo->plid = sta->plid; 537 sinfo->plink_state = sta->plink_state; 538 if (test_sta_flag(sta, WLAN_STA_TOFFSET_KNOWN)) { 539 sinfo->filled |= STATION_INFO_T_OFFSET; 540 sinfo->t_offset = sta->t_offset; 541 } 542 sinfo->local_pm = sta->local_pm; 543 sinfo->peer_pm = sta->peer_pm; 544 sinfo->nonpeer_pm = sta->nonpeer_pm; 545 #endif 546 } 547 548 sinfo->bss_param.flags = 0; 549 if (sdata->vif.bss_conf.use_cts_prot) 550 sinfo->bss_param.flags |= BSS_PARAM_FLAGS_CTS_PROT; 551 if (sdata->vif.bss_conf.use_short_preamble) 552 sinfo->bss_param.flags |= BSS_PARAM_FLAGS_SHORT_PREAMBLE; 553 if (sdata->vif.bss_conf.use_short_slot) 554 sinfo->bss_param.flags |= BSS_PARAM_FLAGS_SHORT_SLOT_TIME; 555 sinfo->bss_param.dtim_period = sdata->local->hw.conf.ps_dtim_period; 556 sinfo->bss_param.beacon_interval = sdata->vif.bss_conf.beacon_int; 557 558 sinfo->sta_flags.set = 0; 559 sinfo->sta_flags.mask = BIT(NL80211_STA_FLAG_AUTHORIZED) | 560 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) | 561 BIT(NL80211_STA_FLAG_WME) | 562 BIT(NL80211_STA_FLAG_MFP) | 563 BIT(NL80211_STA_FLAG_AUTHENTICATED) | 564 BIT(NL80211_STA_FLAG_ASSOCIATED) | 565 BIT(NL80211_STA_FLAG_TDLS_PEER); 566 if (test_sta_flag(sta, WLAN_STA_AUTHORIZED)) 567 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_AUTHORIZED); 568 if (test_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE)) 569 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_SHORT_PREAMBLE); 570 if (test_sta_flag(sta, WLAN_STA_WME)) 571 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_WME); 572 if (test_sta_flag(sta, WLAN_STA_MFP)) 573 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_MFP); 574 if (test_sta_flag(sta, WLAN_STA_AUTH)) 575 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_AUTHENTICATED); 576 if (test_sta_flag(sta, WLAN_STA_ASSOC)) 577 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_ASSOCIATED); 578 if (test_sta_flag(sta, WLAN_STA_TDLS_PEER)) 579 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_TDLS_PEER); 580 } 581 582 static const char ieee80211_gstrings_sta_stats[][ETH_GSTRING_LEN] = { 583 "rx_packets", "rx_bytes", "wep_weak_iv_count", 584 "rx_duplicates", "rx_fragments", "rx_dropped", 585 "tx_packets", "tx_bytes", "tx_fragments", 586 "tx_filtered", "tx_retry_failed", "tx_retries", 587 "beacon_loss", "sta_state", "txrate", "rxrate", "signal", 588 "channel", "noise", "ch_time", "ch_time_busy", 589 "ch_time_ext_busy", "ch_time_rx", "ch_time_tx" 590 }; 591 #define STA_STATS_LEN ARRAY_SIZE(ieee80211_gstrings_sta_stats) 592 593 static int ieee80211_get_et_sset_count(struct wiphy *wiphy, 594 struct net_device *dev, 595 int sset) 596 { 597 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 598 int rv = 0; 599 600 if (sset == ETH_SS_STATS) 601 rv += STA_STATS_LEN; 602 603 rv += drv_get_et_sset_count(sdata, sset); 604 605 if (rv == 0) 606 return -EOPNOTSUPP; 607 return rv; 608 } 609 610 static void ieee80211_get_et_stats(struct wiphy *wiphy, 611 struct net_device *dev, 612 struct ethtool_stats *stats, 613 u64 *data) 614 { 615 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 616 struct ieee80211_chanctx_conf *chanctx_conf; 617 struct ieee80211_channel *channel; 618 struct sta_info *sta; 619 struct ieee80211_local *local = sdata->local; 620 struct station_info sinfo; 621 struct survey_info survey; 622 int i, q; 623 #define STA_STATS_SURVEY_LEN 7 624 625 memset(data, 0, sizeof(u64) * STA_STATS_LEN); 626 627 #define ADD_STA_STATS(sta) \ 628 do { \ 629 data[i++] += sta->rx_packets; \ 630 data[i++] += sta->rx_bytes; \ 631 data[i++] += sta->wep_weak_iv_count; \ 632 data[i++] += sta->num_duplicates; \ 633 data[i++] += sta->rx_fragments; \ 634 data[i++] += sta->rx_dropped; \ 635 \ 636 data[i++] += sinfo.tx_packets; \ 637 data[i++] += sinfo.tx_bytes; \ 638 data[i++] += sta->tx_fragments; \ 639 data[i++] += sta->tx_filtered_count; \ 640 data[i++] += sta->tx_retry_failed; \ 641 data[i++] += sta->tx_retry_count; \ 642 data[i++] += sta->beacon_loss_count; \ 643 } while (0) 644 645 /* For Managed stations, find the single station based on BSSID 646 * and use that. For interface types, iterate through all available 647 * stations and add stats for any station that is assigned to this 648 * network device. 649 */ 650 651 mutex_lock(&local->sta_mtx); 652 653 if (sdata->vif.type == NL80211_IFTYPE_STATION) { 654 sta = sta_info_get_bss(sdata, sdata->u.mgd.bssid); 655 656 if (!(sta && !WARN_ON(sta->sdata->dev != dev))) 657 goto do_survey; 658 659 sinfo.filled = 0; 660 sta_set_sinfo(sta, &sinfo); 661 662 i = 0; 663 ADD_STA_STATS(sta); 664 665 data[i++] = sta->sta_state; 666 667 668 if (sinfo.filled & STATION_INFO_TX_BITRATE) 669 data[i] = 100000 * 670 cfg80211_calculate_bitrate(&sinfo.txrate); 671 i++; 672 if (sinfo.filled & STATION_INFO_RX_BITRATE) 673 data[i] = 100000 * 674 cfg80211_calculate_bitrate(&sinfo.rxrate); 675 i++; 676 677 if (sinfo.filled & STATION_INFO_SIGNAL_AVG) 678 data[i] = (u8)sinfo.signal_avg; 679 i++; 680 } else { 681 list_for_each_entry(sta, &local->sta_list, list) { 682 /* Make sure this station belongs to the proper dev */ 683 if (sta->sdata->dev != dev) 684 continue; 685 686 sinfo.filled = 0; 687 sta_set_sinfo(sta, &sinfo); 688 i = 0; 689 ADD_STA_STATS(sta); 690 } 691 } 692 693 do_survey: 694 i = STA_STATS_LEN - STA_STATS_SURVEY_LEN; 695 /* Get survey stats for current channel */ 696 survey.filled = 0; 697 698 rcu_read_lock(); 699 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); 700 if (chanctx_conf) 701 channel = chanctx_conf->def.chan; 702 else 703 channel = NULL; 704 rcu_read_unlock(); 705 706 if (channel) { 707 q = 0; 708 do { 709 survey.filled = 0; 710 if (drv_get_survey(local, q, &survey) != 0) { 711 survey.filled = 0; 712 break; 713 } 714 q++; 715 } while (channel != survey.channel); 716 } 717 718 if (survey.filled) 719 data[i++] = survey.channel->center_freq; 720 else 721 data[i++] = 0; 722 if (survey.filled & SURVEY_INFO_NOISE_DBM) 723 data[i++] = (u8)survey.noise; 724 else 725 data[i++] = -1LL; 726 if (survey.filled & SURVEY_INFO_CHANNEL_TIME) 727 data[i++] = survey.channel_time; 728 else 729 data[i++] = -1LL; 730 if (survey.filled & SURVEY_INFO_CHANNEL_TIME_BUSY) 731 data[i++] = survey.channel_time_busy; 732 else 733 data[i++] = -1LL; 734 if (survey.filled & SURVEY_INFO_CHANNEL_TIME_EXT_BUSY) 735 data[i++] = survey.channel_time_ext_busy; 736 else 737 data[i++] = -1LL; 738 if (survey.filled & SURVEY_INFO_CHANNEL_TIME_RX) 739 data[i++] = survey.channel_time_rx; 740 else 741 data[i++] = -1LL; 742 if (survey.filled & SURVEY_INFO_CHANNEL_TIME_TX) 743 data[i++] = survey.channel_time_tx; 744 else 745 data[i++] = -1LL; 746 747 mutex_unlock(&local->sta_mtx); 748 749 if (WARN_ON(i != STA_STATS_LEN)) 750 return; 751 752 drv_get_et_stats(sdata, stats, &(data[STA_STATS_LEN])); 753 } 754 755 static void ieee80211_get_et_strings(struct wiphy *wiphy, 756 struct net_device *dev, 757 u32 sset, u8 *data) 758 { 759 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 760 int sz_sta_stats = 0; 761 762 if (sset == ETH_SS_STATS) { 763 sz_sta_stats = sizeof(ieee80211_gstrings_sta_stats); 764 memcpy(data, ieee80211_gstrings_sta_stats, sz_sta_stats); 765 } 766 drv_get_et_strings(sdata, sset, &(data[sz_sta_stats])); 767 } 768 769 static int ieee80211_dump_station(struct wiphy *wiphy, struct net_device *dev, 770 int idx, u8 *mac, struct station_info *sinfo) 771 { 772 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 773 struct ieee80211_local *local = sdata->local; 774 struct sta_info *sta; 775 int ret = -ENOENT; 776 777 mutex_lock(&local->sta_mtx); 778 779 sta = sta_info_get_by_idx(sdata, idx); 780 if (sta) { 781 ret = 0; 782 memcpy(mac, sta->sta.addr, ETH_ALEN); 783 sta_set_sinfo(sta, sinfo); 784 } 785 786 mutex_unlock(&local->sta_mtx); 787 788 return ret; 789 } 790 791 static int ieee80211_dump_survey(struct wiphy *wiphy, struct net_device *dev, 792 int idx, struct survey_info *survey) 793 { 794 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); 795 796 return drv_get_survey(local, idx, survey); 797 } 798 799 static int ieee80211_get_station(struct wiphy *wiphy, struct net_device *dev, 800 u8 *mac, struct station_info *sinfo) 801 { 802 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 803 struct ieee80211_local *local = sdata->local; 804 struct sta_info *sta; 805 int ret = -ENOENT; 806 807 mutex_lock(&local->sta_mtx); 808 809 sta = sta_info_get_bss(sdata, mac); 810 if (sta) { 811 ret = 0; 812 sta_set_sinfo(sta, sinfo); 813 } 814 815 mutex_unlock(&local->sta_mtx); 816 817 return ret; 818 } 819 820 static int ieee80211_set_monitor_channel(struct wiphy *wiphy, 821 struct cfg80211_chan_def *chandef) 822 { 823 struct ieee80211_local *local = wiphy_priv(wiphy); 824 struct ieee80211_sub_if_data *sdata; 825 int ret = 0; 826 827 if (cfg80211_chandef_identical(&local->monitor_chandef, chandef)) 828 return 0; 829 830 mutex_lock(&local->iflist_mtx); 831 if (local->use_chanctx) { 832 sdata = rcu_dereference_protected( 833 local->monitor_sdata, 834 lockdep_is_held(&local->iflist_mtx)); 835 if (sdata) { 836 ieee80211_vif_release_channel(sdata); 837 ret = ieee80211_vif_use_channel(sdata, chandef, 838 IEEE80211_CHANCTX_EXCLUSIVE); 839 } 840 } else if (local->open_count == local->monitors) { 841 local->_oper_chandef = *chandef; 842 ieee80211_hw_config(local, 0); 843 } 844 845 if (ret == 0) 846 local->monitor_chandef = *chandef; 847 mutex_unlock(&local->iflist_mtx); 848 849 return ret; 850 } 851 852 static int ieee80211_set_probe_resp(struct ieee80211_sub_if_data *sdata, 853 const u8 *resp, size_t resp_len) 854 { 855 struct probe_resp *new, *old; 856 857 if (!resp || !resp_len) 858 return 1; 859 860 old = sdata_dereference(sdata->u.ap.probe_resp, sdata); 861 862 new = kzalloc(sizeof(struct probe_resp) + resp_len, GFP_KERNEL); 863 if (!new) 864 return -ENOMEM; 865 866 new->len = resp_len; 867 memcpy(new->data, resp, resp_len); 868 869 rcu_assign_pointer(sdata->u.ap.probe_resp, new); 870 if (old) 871 kfree_rcu(old, rcu_head); 872 873 return 0; 874 } 875 876 int ieee80211_assign_beacon(struct ieee80211_sub_if_data *sdata, 877 struct cfg80211_beacon_data *params) 878 { 879 struct beacon_data *new, *old; 880 int new_head_len, new_tail_len; 881 int size, err; 882 u32 changed = BSS_CHANGED_BEACON; 883 884 old = sdata_dereference(sdata->u.ap.beacon, sdata); 885 886 887 /* Need to have a beacon head if we don't have one yet */ 888 if (!params->head && !old) 889 return -EINVAL; 890 891 /* new or old head? */ 892 if (params->head) 893 new_head_len = params->head_len; 894 else 895 new_head_len = old->head_len; 896 897 /* new or old tail? */ 898 if (params->tail || !old) 899 /* params->tail_len will be zero for !params->tail */ 900 new_tail_len = params->tail_len; 901 else 902 new_tail_len = old->tail_len; 903 904 size = sizeof(*new) + new_head_len + new_tail_len; 905 906 new = kzalloc(size, GFP_KERNEL); 907 if (!new) 908 return -ENOMEM; 909 910 /* start filling the new info now */ 911 912 /* 913 * pointers go into the block we allocated, 914 * memory is | beacon_data | head | tail | 915 */ 916 new->head = ((u8 *) new) + sizeof(*new); 917 new->tail = new->head + new_head_len; 918 new->head_len = new_head_len; 919 new->tail_len = new_tail_len; 920 921 /* copy in head */ 922 if (params->head) 923 memcpy(new->head, params->head, new_head_len); 924 else 925 memcpy(new->head, old->head, new_head_len); 926 927 /* copy in optional tail */ 928 if (params->tail) 929 memcpy(new->tail, params->tail, new_tail_len); 930 else 931 if (old) 932 memcpy(new->tail, old->tail, new_tail_len); 933 934 err = ieee80211_set_probe_resp(sdata, params->probe_resp, 935 params->probe_resp_len); 936 if (err < 0) 937 return err; 938 if (err == 0) 939 changed |= BSS_CHANGED_AP_PROBE_RESP; 940 941 rcu_assign_pointer(sdata->u.ap.beacon, new); 942 943 if (old) 944 kfree_rcu(old, rcu_head); 945 946 return changed; 947 } 948 949 static int ieee80211_start_ap(struct wiphy *wiphy, struct net_device *dev, 950 struct cfg80211_ap_settings *params) 951 { 952 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 953 struct beacon_data *old; 954 struct ieee80211_sub_if_data *vlan; 955 u32 changed = BSS_CHANGED_BEACON_INT | 956 BSS_CHANGED_BEACON_ENABLED | 957 BSS_CHANGED_BEACON | 958 BSS_CHANGED_SSID | 959 BSS_CHANGED_P2P_PS; 960 int err; 961 962 old = sdata_dereference(sdata->u.ap.beacon, sdata); 963 if (old) 964 return -EALREADY; 965 966 /* TODO: make hostapd tell us what it wants */ 967 sdata->smps_mode = IEEE80211_SMPS_OFF; 968 sdata->needed_rx_chains = sdata->local->rx_chains; 969 sdata->radar_required = params->radar_required; 970 971 err = ieee80211_vif_use_channel(sdata, ¶ms->chandef, 972 IEEE80211_CHANCTX_SHARED); 973 if (err) 974 return err; 975 ieee80211_vif_copy_chanctx_to_vlans(sdata, false); 976 977 /* 978 * Apply control port protocol, this allows us to 979 * not encrypt dynamic WEP control frames. 980 */ 981 sdata->control_port_protocol = params->crypto.control_port_ethertype; 982 sdata->control_port_no_encrypt = params->crypto.control_port_no_encrypt; 983 sdata->encrypt_headroom = ieee80211_cs_headroom(sdata->local, 984 ¶ms->crypto, 985 sdata->vif.type); 986 987 list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) { 988 vlan->control_port_protocol = 989 params->crypto.control_port_ethertype; 990 vlan->control_port_no_encrypt = 991 params->crypto.control_port_no_encrypt; 992 vlan->encrypt_headroom = 993 ieee80211_cs_headroom(sdata->local, 994 ¶ms->crypto, 995 vlan->vif.type); 996 } 997 998 sdata->vif.bss_conf.beacon_int = params->beacon_interval; 999 sdata->vif.bss_conf.dtim_period = params->dtim_period; 1000 sdata->vif.bss_conf.enable_beacon = true; 1001 1002 sdata->vif.bss_conf.ssid_len = params->ssid_len; 1003 if (params->ssid_len) 1004 memcpy(sdata->vif.bss_conf.ssid, params->ssid, 1005 params->ssid_len); 1006 sdata->vif.bss_conf.hidden_ssid = 1007 (params->hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE); 1008 1009 memset(&sdata->vif.bss_conf.p2p_noa_attr, 0, 1010 sizeof(sdata->vif.bss_conf.p2p_noa_attr)); 1011 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow = 1012 params->p2p_ctwindow & IEEE80211_P2P_OPPPS_CTWINDOW_MASK; 1013 if (params->p2p_opp_ps) 1014 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |= 1015 IEEE80211_P2P_OPPPS_ENABLE_BIT; 1016 1017 err = ieee80211_assign_beacon(sdata, ¶ms->beacon); 1018 if (err < 0) 1019 return err; 1020 changed |= err; 1021 1022 err = drv_start_ap(sdata->local, sdata); 1023 if (err) { 1024 old = sdata_dereference(sdata->u.ap.beacon, sdata); 1025 1026 if (old) 1027 kfree_rcu(old, rcu_head); 1028 RCU_INIT_POINTER(sdata->u.ap.beacon, NULL); 1029 return err; 1030 } 1031 1032 ieee80211_bss_info_change_notify(sdata, changed); 1033 1034 netif_carrier_on(dev); 1035 list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) 1036 netif_carrier_on(vlan->dev); 1037 1038 return 0; 1039 } 1040 1041 static int ieee80211_change_beacon(struct wiphy *wiphy, struct net_device *dev, 1042 struct cfg80211_beacon_data *params) 1043 { 1044 struct ieee80211_sub_if_data *sdata; 1045 struct beacon_data *old; 1046 int err; 1047 1048 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1049 1050 /* don't allow changing the beacon while CSA is in place - offset 1051 * of channel switch counter may change 1052 */ 1053 if (sdata->vif.csa_active) 1054 return -EBUSY; 1055 1056 old = sdata_dereference(sdata->u.ap.beacon, sdata); 1057 if (!old) 1058 return -ENOENT; 1059 1060 err = ieee80211_assign_beacon(sdata, params); 1061 if (err < 0) 1062 return err; 1063 ieee80211_bss_info_change_notify(sdata, err); 1064 return 0; 1065 } 1066 1067 static int ieee80211_stop_ap(struct wiphy *wiphy, struct net_device *dev) 1068 { 1069 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1070 struct ieee80211_sub_if_data *vlan; 1071 struct ieee80211_local *local = sdata->local; 1072 struct beacon_data *old_beacon; 1073 struct probe_resp *old_probe_resp; 1074 struct cfg80211_chan_def chandef; 1075 1076 old_beacon = sdata_dereference(sdata->u.ap.beacon, sdata); 1077 if (!old_beacon) 1078 return -ENOENT; 1079 old_probe_resp = sdata_dereference(sdata->u.ap.probe_resp, sdata); 1080 1081 /* abort any running channel switch */ 1082 sdata->vif.csa_active = false; 1083 kfree(sdata->u.ap.next_beacon); 1084 sdata->u.ap.next_beacon = NULL; 1085 1086 cancel_work_sync(&sdata->u.ap.request_smps_work); 1087 1088 /* turn off carrier for this interface and dependent VLANs */ 1089 list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) 1090 netif_carrier_off(vlan->dev); 1091 netif_carrier_off(dev); 1092 1093 /* remove beacon and probe response */ 1094 RCU_INIT_POINTER(sdata->u.ap.beacon, NULL); 1095 RCU_INIT_POINTER(sdata->u.ap.probe_resp, NULL); 1096 kfree_rcu(old_beacon, rcu_head); 1097 if (old_probe_resp) 1098 kfree_rcu(old_probe_resp, rcu_head); 1099 1100 list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) 1101 sta_info_flush_defer(vlan); 1102 sta_info_flush_defer(sdata); 1103 synchronize_net(); 1104 rcu_barrier(); 1105 list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) { 1106 sta_info_flush_cleanup(vlan); 1107 ieee80211_free_keys(vlan); 1108 } 1109 sta_info_flush_cleanup(sdata); 1110 ieee80211_free_keys(sdata); 1111 1112 sdata->vif.bss_conf.enable_beacon = false; 1113 sdata->vif.bss_conf.ssid_len = 0; 1114 clear_bit(SDATA_STATE_OFFCHANNEL_BEACON_STOPPED, &sdata->state); 1115 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED); 1116 1117 if (sdata->wdev.cac_started) { 1118 chandef = sdata->vif.bss_conf.chandef; 1119 cancel_delayed_work_sync(&sdata->dfs_cac_timer_work); 1120 cfg80211_cac_event(sdata->dev, &chandef, 1121 NL80211_RADAR_CAC_ABORTED, 1122 GFP_KERNEL); 1123 } 1124 1125 drv_stop_ap(sdata->local, sdata); 1126 1127 /* free all potentially still buffered bcast frames */ 1128 local->total_ps_buffered -= skb_queue_len(&sdata->u.ap.ps.bc_buf); 1129 skb_queue_purge(&sdata->u.ap.ps.bc_buf); 1130 1131 ieee80211_vif_copy_chanctx_to_vlans(sdata, true); 1132 ieee80211_vif_release_channel(sdata); 1133 1134 return 0; 1135 } 1136 1137 /* Layer 2 Update frame (802.2 Type 1 LLC XID Update response) */ 1138 struct iapp_layer2_update { 1139 u8 da[ETH_ALEN]; /* broadcast */ 1140 u8 sa[ETH_ALEN]; /* STA addr */ 1141 __be16 len; /* 6 */ 1142 u8 dsap; /* 0 */ 1143 u8 ssap; /* 0 */ 1144 u8 control; 1145 u8 xid_info[3]; 1146 } __packed; 1147 1148 static void ieee80211_send_layer2_update(struct sta_info *sta) 1149 { 1150 struct iapp_layer2_update *msg; 1151 struct sk_buff *skb; 1152 1153 /* Send Level 2 Update Frame to update forwarding tables in layer 2 1154 * bridge devices */ 1155 1156 skb = dev_alloc_skb(sizeof(*msg)); 1157 if (!skb) 1158 return; 1159 msg = (struct iapp_layer2_update *)skb_put(skb, sizeof(*msg)); 1160 1161 /* 802.2 Type 1 Logical Link Control (LLC) Exchange Identifier (XID) 1162 * Update response frame; IEEE Std 802.2-1998, 5.4.1.2.1 */ 1163 1164 eth_broadcast_addr(msg->da); 1165 memcpy(msg->sa, sta->sta.addr, ETH_ALEN); 1166 msg->len = htons(6); 1167 msg->dsap = 0; 1168 msg->ssap = 0x01; /* NULL LSAP, CR Bit: Response */ 1169 msg->control = 0xaf; /* XID response lsb.1111F101. 1170 * F=0 (no poll command; unsolicited frame) */ 1171 msg->xid_info[0] = 0x81; /* XID format identifier */ 1172 msg->xid_info[1] = 1; /* LLC types/classes: Type 1 LLC */ 1173 msg->xid_info[2] = 0; /* XID sender's receive window size (RW) */ 1174 1175 skb->dev = sta->sdata->dev; 1176 skb->protocol = eth_type_trans(skb, sta->sdata->dev); 1177 memset(skb->cb, 0, sizeof(skb->cb)); 1178 netif_rx_ni(skb); 1179 } 1180 1181 static int sta_apply_auth_flags(struct ieee80211_local *local, 1182 struct sta_info *sta, 1183 u32 mask, u32 set) 1184 { 1185 int ret; 1186 1187 if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED) && 1188 set & BIT(NL80211_STA_FLAG_AUTHENTICATED) && 1189 !test_sta_flag(sta, WLAN_STA_AUTH)) { 1190 ret = sta_info_move_state(sta, IEEE80211_STA_AUTH); 1191 if (ret) 1192 return ret; 1193 } 1194 1195 if (mask & BIT(NL80211_STA_FLAG_ASSOCIATED) && 1196 set & BIT(NL80211_STA_FLAG_ASSOCIATED) && 1197 !test_sta_flag(sta, WLAN_STA_ASSOC)) { 1198 ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC); 1199 if (ret) 1200 return ret; 1201 } 1202 1203 if (mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) { 1204 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED)) 1205 ret = sta_info_move_state(sta, IEEE80211_STA_AUTHORIZED); 1206 else if (test_sta_flag(sta, WLAN_STA_AUTHORIZED)) 1207 ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC); 1208 else 1209 ret = 0; 1210 if (ret) 1211 return ret; 1212 } 1213 1214 if (mask & BIT(NL80211_STA_FLAG_ASSOCIATED) && 1215 !(set & BIT(NL80211_STA_FLAG_ASSOCIATED)) && 1216 test_sta_flag(sta, WLAN_STA_ASSOC)) { 1217 ret = sta_info_move_state(sta, IEEE80211_STA_AUTH); 1218 if (ret) 1219 return ret; 1220 } 1221 1222 if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED) && 1223 !(set & BIT(NL80211_STA_FLAG_AUTHENTICATED)) && 1224 test_sta_flag(sta, WLAN_STA_AUTH)) { 1225 ret = sta_info_move_state(sta, IEEE80211_STA_NONE); 1226 if (ret) 1227 return ret; 1228 } 1229 1230 return 0; 1231 } 1232 1233 static int sta_apply_parameters(struct ieee80211_local *local, 1234 struct sta_info *sta, 1235 struct station_parameters *params) 1236 { 1237 int ret = 0; 1238 struct ieee80211_supported_band *sband; 1239 struct ieee80211_sub_if_data *sdata = sta->sdata; 1240 enum ieee80211_band band = ieee80211_get_sdata_band(sdata); 1241 u32 mask, set; 1242 1243 sband = local->hw.wiphy->bands[band]; 1244 1245 mask = params->sta_flags_mask; 1246 set = params->sta_flags_set; 1247 1248 if (ieee80211_vif_is_mesh(&sdata->vif)) { 1249 /* 1250 * In mesh mode, ASSOCIATED isn't part of the nl80211 1251 * API but must follow AUTHENTICATED for driver state. 1252 */ 1253 if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED)) 1254 mask |= BIT(NL80211_STA_FLAG_ASSOCIATED); 1255 if (set & BIT(NL80211_STA_FLAG_AUTHENTICATED)) 1256 set |= BIT(NL80211_STA_FLAG_ASSOCIATED); 1257 } else if (test_sta_flag(sta, WLAN_STA_TDLS_PEER)) { 1258 /* 1259 * TDLS -- everything follows authorized, but 1260 * only becoming authorized is possible, not 1261 * going back 1262 */ 1263 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED)) { 1264 set |= BIT(NL80211_STA_FLAG_AUTHENTICATED) | 1265 BIT(NL80211_STA_FLAG_ASSOCIATED); 1266 mask |= BIT(NL80211_STA_FLAG_AUTHENTICATED) | 1267 BIT(NL80211_STA_FLAG_ASSOCIATED); 1268 } 1269 } 1270 1271 ret = sta_apply_auth_flags(local, sta, mask, set); 1272 if (ret) 1273 return ret; 1274 1275 if (mask & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE)) { 1276 if (set & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE)) 1277 set_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE); 1278 else 1279 clear_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE); 1280 } 1281 1282 if (mask & BIT(NL80211_STA_FLAG_WME)) { 1283 if (set & BIT(NL80211_STA_FLAG_WME)) { 1284 set_sta_flag(sta, WLAN_STA_WME); 1285 sta->sta.wme = true; 1286 } else { 1287 clear_sta_flag(sta, WLAN_STA_WME); 1288 sta->sta.wme = false; 1289 } 1290 } 1291 1292 if (mask & BIT(NL80211_STA_FLAG_MFP)) { 1293 if (set & BIT(NL80211_STA_FLAG_MFP)) 1294 set_sta_flag(sta, WLAN_STA_MFP); 1295 else 1296 clear_sta_flag(sta, WLAN_STA_MFP); 1297 } 1298 1299 if (mask & BIT(NL80211_STA_FLAG_TDLS_PEER)) { 1300 if (set & BIT(NL80211_STA_FLAG_TDLS_PEER)) 1301 set_sta_flag(sta, WLAN_STA_TDLS_PEER); 1302 else 1303 clear_sta_flag(sta, WLAN_STA_TDLS_PEER); 1304 } 1305 1306 if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD) { 1307 sta->sta.uapsd_queues = params->uapsd_queues; 1308 sta->sta.max_sp = params->max_sp; 1309 } 1310 1311 /* 1312 * cfg80211 validates this (1-2007) and allows setting the AID 1313 * only when creating a new station entry 1314 */ 1315 if (params->aid) 1316 sta->sta.aid = params->aid; 1317 1318 /* 1319 * Some of the following updates would be racy if called on an 1320 * existing station, via ieee80211_change_station(). However, 1321 * all such changes are rejected by cfg80211 except for updates 1322 * changing the supported rates on an existing but not yet used 1323 * TDLS peer. 1324 */ 1325 1326 if (params->listen_interval >= 0) 1327 sta->listen_interval = params->listen_interval; 1328 1329 if (params->supported_rates) { 1330 ieee80211_parse_bitrates(&sdata->vif.bss_conf.chandef, 1331 sband, params->supported_rates, 1332 params->supported_rates_len, 1333 &sta->sta.supp_rates[band]); 1334 } 1335 1336 if (params->ht_capa) 1337 ieee80211_ht_cap_ie_to_sta_ht_cap(sdata, sband, 1338 params->ht_capa, sta); 1339 1340 if (params->vht_capa) 1341 ieee80211_vht_cap_ie_to_sta_vht_cap(sdata, sband, 1342 params->vht_capa, sta); 1343 1344 if (ieee80211_vif_is_mesh(&sdata->vif)) { 1345 #ifdef CONFIG_MAC80211_MESH 1346 u32 changed = 0; 1347 1348 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE) { 1349 switch (params->plink_state) { 1350 case NL80211_PLINK_ESTAB: 1351 if (sta->plink_state != NL80211_PLINK_ESTAB) 1352 changed = mesh_plink_inc_estab_count( 1353 sdata); 1354 sta->plink_state = params->plink_state; 1355 1356 ieee80211_mps_sta_status_update(sta); 1357 changed |= ieee80211_mps_set_sta_local_pm(sta, 1358 sdata->u.mesh.mshcfg.power_mode); 1359 break; 1360 case NL80211_PLINK_LISTEN: 1361 case NL80211_PLINK_BLOCKED: 1362 case NL80211_PLINK_OPN_SNT: 1363 case NL80211_PLINK_OPN_RCVD: 1364 case NL80211_PLINK_CNF_RCVD: 1365 case NL80211_PLINK_HOLDING: 1366 if (sta->plink_state == NL80211_PLINK_ESTAB) 1367 changed = mesh_plink_dec_estab_count( 1368 sdata); 1369 sta->plink_state = params->plink_state; 1370 1371 ieee80211_mps_sta_status_update(sta); 1372 changed |= ieee80211_mps_set_sta_local_pm(sta, 1373 NL80211_MESH_POWER_UNKNOWN); 1374 break; 1375 default: 1376 /* nothing */ 1377 break; 1378 } 1379 } 1380 1381 switch (params->plink_action) { 1382 case NL80211_PLINK_ACTION_NO_ACTION: 1383 /* nothing */ 1384 break; 1385 case NL80211_PLINK_ACTION_OPEN: 1386 changed |= mesh_plink_open(sta); 1387 break; 1388 case NL80211_PLINK_ACTION_BLOCK: 1389 changed |= mesh_plink_block(sta); 1390 break; 1391 } 1392 1393 if (params->local_pm) 1394 changed |= 1395 ieee80211_mps_set_sta_local_pm(sta, 1396 params->local_pm); 1397 ieee80211_mbss_info_change_notify(sdata, changed); 1398 #endif 1399 } 1400 1401 return 0; 1402 } 1403 1404 static int ieee80211_add_station(struct wiphy *wiphy, struct net_device *dev, 1405 u8 *mac, struct station_parameters *params) 1406 { 1407 struct ieee80211_local *local = wiphy_priv(wiphy); 1408 struct sta_info *sta; 1409 struct ieee80211_sub_if_data *sdata; 1410 int err; 1411 int layer2_update; 1412 1413 if (params->vlan) { 1414 sdata = IEEE80211_DEV_TO_SUB_IF(params->vlan); 1415 1416 if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN && 1417 sdata->vif.type != NL80211_IFTYPE_AP) 1418 return -EINVAL; 1419 } else 1420 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1421 1422 if (ether_addr_equal(mac, sdata->vif.addr)) 1423 return -EINVAL; 1424 1425 if (is_multicast_ether_addr(mac)) 1426 return -EINVAL; 1427 1428 sta = sta_info_alloc(sdata, mac, GFP_KERNEL); 1429 if (!sta) 1430 return -ENOMEM; 1431 1432 /* 1433 * defaults -- if userspace wants something else we'll 1434 * change it accordingly in sta_apply_parameters() 1435 */ 1436 if (!(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))) { 1437 sta_info_pre_move_state(sta, IEEE80211_STA_AUTH); 1438 sta_info_pre_move_state(sta, IEEE80211_STA_ASSOC); 1439 } 1440 1441 err = sta_apply_parameters(local, sta, params); 1442 if (err) { 1443 sta_info_free(local, sta); 1444 return err; 1445 } 1446 1447 /* 1448 * for TDLS, rate control should be initialized only when 1449 * rates are known and station is marked authorized 1450 */ 1451 if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER)) 1452 rate_control_rate_init(sta); 1453 1454 layer2_update = sdata->vif.type == NL80211_IFTYPE_AP_VLAN || 1455 sdata->vif.type == NL80211_IFTYPE_AP; 1456 1457 err = sta_info_insert_rcu(sta); 1458 if (err) { 1459 rcu_read_unlock(); 1460 return err; 1461 } 1462 1463 if (layer2_update) 1464 ieee80211_send_layer2_update(sta); 1465 1466 rcu_read_unlock(); 1467 1468 return 0; 1469 } 1470 1471 static int ieee80211_del_station(struct wiphy *wiphy, struct net_device *dev, 1472 u8 *mac) 1473 { 1474 struct ieee80211_sub_if_data *sdata; 1475 1476 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1477 1478 if (mac) 1479 return sta_info_destroy_addr_bss(sdata, mac); 1480 1481 sta_info_flush(sdata); 1482 return 0; 1483 } 1484 1485 static int ieee80211_change_station(struct wiphy *wiphy, 1486 struct net_device *dev, u8 *mac, 1487 struct station_parameters *params) 1488 { 1489 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1490 struct ieee80211_local *local = wiphy_priv(wiphy); 1491 struct sta_info *sta; 1492 struct ieee80211_sub_if_data *vlansdata; 1493 enum cfg80211_station_type statype; 1494 int err; 1495 1496 mutex_lock(&local->sta_mtx); 1497 1498 sta = sta_info_get_bss(sdata, mac); 1499 if (!sta) { 1500 err = -ENOENT; 1501 goto out_err; 1502 } 1503 1504 switch (sdata->vif.type) { 1505 case NL80211_IFTYPE_MESH_POINT: 1506 if (sdata->u.mesh.user_mpm) 1507 statype = CFG80211_STA_MESH_PEER_USER; 1508 else 1509 statype = CFG80211_STA_MESH_PEER_KERNEL; 1510 break; 1511 case NL80211_IFTYPE_ADHOC: 1512 statype = CFG80211_STA_IBSS; 1513 break; 1514 case NL80211_IFTYPE_STATION: 1515 if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER)) { 1516 statype = CFG80211_STA_AP_STA; 1517 break; 1518 } 1519 if (test_sta_flag(sta, WLAN_STA_AUTHORIZED)) 1520 statype = CFG80211_STA_TDLS_PEER_ACTIVE; 1521 else 1522 statype = CFG80211_STA_TDLS_PEER_SETUP; 1523 break; 1524 case NL80211_IFTYPE_AP: 1525 case NL80211_IFTYPE_AP_VLAN: 1526 statype = CFG80211_STA_AP_CLIENT; 1527 break; 1528 default: 1529 err = -EOPNOTSUPP; 1530 goto out_err; 1531 } 1532 1533 err = cfg80211_check_station_change(wiphy, params, statype); 1534 if (err) 1535 goto out_err; 1536 1537 if (params->vlan && params->vlan != sta->sdata->dev) { 1538 bool prev_4addr = false; 1539 bool new_4addr = false; 1540 1541 vlansdata = IEEE80211_DEV_TO_SUB_IF(params->vlan); 1542 1543 if (params->vlan->ieee80211_ptr->use_4addr) { 1544 if (vlansdata->u.vlan.sta) { 1545 err = -EBUSY; 1546 goto out_err; 1547 } 1548 1549 rcu_assign_pointer(vlansdata->u.vlan.sta, sta); 1550 new_4addr = true; 1551 } 1552 1553 if (sta->sdata->vif.type == NL80211_IFTYPE_AP_VLAN && 1554 sta->sdata->u.vlan.sta) { 1555 rcu_assign_pointer(sta->sdata->u.vlan.sta, NULL); 1556 prev_4addr = true; 1557 } 1558 1559 sta->sdata = vlansdata; 1560 1561 if (sta->sta_state == IEEE80211_STA_AUTHORIZED && 1562 prev_4addr != new_4addr) { 1563 if (new_4addr) 1564 atomic_dec(&sta->sdata->bss->num_mcast_sta); 1565 else 1566 atomic_inc(&sta->sdata->bss->num_mcast_sta); 1567 } 1568 1569 ieee80211_send_layer2_update(sta); 1570 } 1571 1572 err = sta_apply_parameters(local, sta, params); 1573 if (err) 1574 goto out_err; 1575 1576 /* When peer becomes authorized, init rate control as well */ 1577 if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) && 1578 test_sta_flag(sta, WLAN_STA_AUTHORIZED)) 1579 rate_control_rate_init(sta); 1580 1581 mutex_unlock(&local->sta_mtx); 1582 1583 if ((sdata->vif.type == NL80211_IFTYPE_AP || 1584 sdata->vif.type == NL80211_IFTYPE_AP_VLAN) && 1585 sta->known_smps_mode != sta->sdata->bss->req_smps && 1586 test_sta_flag(sta, WLAN_STA_AUTHORIZED) && 1587 sta_info_tx_streams(sta) != 1) { 1588 ht_dbg(sta->sdata, 1589 "%pM just authorized and MIMO capable - update SMPS\n", 1590 sta->sta.addr); 1591 ieee80211_send_smps_action(sta->sdata, 1592 sta->sdata->bss->req_smps, 1593 sta->sta.addr, 1594 sta->sdata->vif.bss_conf.bssid); 1595 } 1596 1597 if (sdata->vif.type == NL80211_IFTYPE_STATION && 1598 params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) { 1599 ieee80211_recalc_ps(local, -1); 1600 ieee80211_recalc_ps_vif(sdata); 1601 } 1602 1603 return 0; 1604 out_err: 1605 mutex_unlock(&local->sta_mtx); 1606 return err; 1607 } 1608 1609 #ifdef CONFIG_MAC80211_MESH 1610 static int ieee80211_add_mpath(struct wiphy *wiphy, struct net_device *dev, 1611 u8 *dst, u8 *next_hop) 1612 { 1613 struct ieee80211_sub_if_data *sdata; 1614 struct mesh_path *mpath; 1615 struct sta_info *sta; 1616 1617 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1618 1619 rcu_read_lock(); 1620 sta = sta_info_get(sdata, next_hop); 1621 if (!sta) { 1622 rcu_read_unlock(); 1623 return -ENOENT; 1624 } 1625 1626 mpath = mesh_path_add(sdata, dst); 1627 if (IS_ERR(mpath)) { 1628 rcu_read_unlock(); 1629 return PTR_ERR(mpath); 1630 } 1631 1632 mesh_path_fix_nexthop(mpath, sta); 1633 1634 rcu_read_unlock(); 1635 return 0; 1636 } 1637 1638 static int ieee80211_del_mpath(struct wiphy *wiphy, struct net_device *dev, 1639 u8 *dst) 1640 { 1641 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1642 1643 if (dst) 1644 return mesh_path_del(sdata, dst); 1645 1646 mesh_path_flush_by_iface(sdata); 1647 return 0; 1648 } 1649 1650 static int ieee80211_change_mpath(struct wiphy *wiphy, 1651 struct net_device *dev, 1652 u8 *dst, u8 *next_hop) 1653 { 1654 struct ieee80211_sub_if_data *sdata; 1655 struct mesh_path *mpath; 1656 struct sta_info *sta; 1657 1658 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1659 1660 rcu_read_lock(); 1661 1662 sta = sta_info_get(sdata, next_hop); 1663 if (!sta) { 1664 rcu_read_unlock(); 1665 return -ENOENT; 1666 } 1667 1668 mpath = mesh_path_lookup(sdata, dst); 1669 if (!mpath) { 1670 rcu_read_unlock(); 1671 return -ENOENT; 1672 } 1673 1674 mesh_path_fix_nexthop(mpath, sta); 1675 1676 rcu_read_unlock(); 1677 return 0; 1678 } 1679 1680 static void mpath_set_pinfo(struct mesh_path *mpath, u8 *next_hop, 1681 struct mpath_info *pinfo) 1682 { 1683 struct sta_info *next_hop_sta = rcu_dereference(mpath->next_hop); 1684 1685 if (next_hop_sta) 1686 memcpy(next_hop, next_hop_sta->sta.addr, ETH_ALEN); 1687 else 1688 memset(next_hop, 0, ETH_ALEN); 1689 1690 memset(pinfo, 0, sizeof(*pinfo)); 1691 1692 pinfo->generation = mesh_paths_generation; 1693 1694 pinfo->filled = MPATH_INFO_FRAME_QLEN | 1695 MPATH_INFO_SN | 1696 MPATH_INFO_METRIC | 1697 MPATH_INFO_EXPTIME | 1698 MPATH_INFO_DISCOVERY_TIMEOUT | 1699 MPATH_INFO_DISCOVERY_RETRIES | 1700 MPATH_INFO_FLAGS; 1701 1702 pinfo->frame_qlen = mpath->frame_queue.qlen; 1703 pinfo->sn = mpath->sn; 1704 pinfo->metric = mpath->metric; 1705 if (time_before(jiffies, mpath->exp_time)) 1706 pinfo->exptime = jiffies_to_msecs(mpath->exp_time - jiffies); 1707 pinfo->discovery_timeout = 1708 jiffies_to_msecs(mpath->discovery_timeout); 1709 pinfo->discovery_retries = mpath->discovery_retries; 1710 if (mpath->flags & MESH_PATH_ACTIVE) 1711 pinfo->flags |= NL80211_MPATH_FLAG_ACTIVE; 1712 if (mpath->flags & MESH_PATH_RESOLVING) 1713 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING; 1714 if (mpath->flags & MESH_PATH_SN_VALID) 1715 pinfo->flags |= NL80211_MPATH_FLAG_SN_VALID; 1716 if (mpath->flags & MESH_PATH_FIXED) 1717 pinfo->flags |= NL80211_MPATH_FLAG_FIXED; 1718 if (mpath->flags & MESH_PATH_RESOLVED) 1719 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVED; 1720 } 1721 1722 static int ieee80211_get_mpath(struct wiphy *wiphy, struct net_device *dev, 1723 u8 *dst, u8 *next_hop, struct mpath_info *pinfo) 1724 1725 { 1726 struct ieee80211_sub_if_data *sdata; 1727 struct mesh_path *mpath; 1728 1729 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1730 1731 rcu_read_lock(); 1732 mpath = mesh_path_lookup(sdata, dst); 1733 if (!mpath) { 1734 rcu_read_unlock(); 1735 return -ENOENT; 1736 } 1737 memcpy(dst, mpath->dst, ETH_ALEN); 1738 mpath_set_pinfo(mpath, next_hop, pinfo); 1739 rcu_read_unlock(); 1740 return 0; 1741 } 1742 1743 static int ieee80211_dump_mpath(struct wiphy *wiphy, struct net_device *dev, 1744 int idx, u8 *dst, u8 *next_hop, 1745 struct mpath_info *pinfo) 1746 { 1747 struct ieee80211_sub_if_data *sdata; 1748 struct mesh_path *mpath; 1749 1750 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1751 1752 rcu_read_lock(); 1753 mpath = mesh_path_lookup_by_idx(sdata, idx); 1754 if (!mpath) { 1755 rcu_read_unlock(); 1756 return -ENOENT; 1757 } 1758 memcpy(dst, mpath->dst, ETH_ALEN); 1759 mpath_set_pinfo(mpath, next_hop, pinfo); 1760 rcu_read_unlock(); 1761 return 0; 1762 } 1763 1764 static int ieee80211_get_mesh_config(struct wiphy *wiphy, 1765 struct net_device *dev, 1766 struct mesh_config *conf) 1767 { 1768 struct ieee80211_sub_if_data *sdata; 1769 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1770 1771 memcpy(conf, &(sdata->u.mesh.mshcfg), sizeof(struct mesh_config)); 1772 return 0; 1773 } 1774 1775 static inline bool _chg_mesh_attr(enum nl80211_meshconf_params parm, u32 mask) 1776 { 1777 return (mask >> (parm-1)) & 0x1; 1778 } 1779 1780 static int copy_mesh_setup(struct ieee80211_if_mesh *ifmsh, 1781 const struct mesh_setup *setup) 1782 { 1783 u8 *new_ie; 1784 const u8 *old_ie; 1785 struct ieee80211_sub_if_data *sdata = container_of(ifmsh, 1786 struct ieee80211_sub_if_data, u.mesh); 1787 1788 /* allocate information elements */ 1789 new_ie = NULL; 1790 old_ie = ifmsh->ie; 1791 1792 if (setup->ie_len) { 1793 new_ie = kmemdup(setup->ie, setup->ie_len, 1794 GFP_KERNEL); 1795 if (!new_ie) 1796 return -ENOMEM; 1797 } 1798 ifmsh->ie_len = setup->ie_len; 1799 ifmsh->ie = new_ie; 1800 kfree(old_ie); 1801 1802 /* now copy the rest of the setup parameters */ 1803 ifmsh->mesh_id_len = setup->mesh_id_len; 1804 memcpy(ifmsh->mesh_id, setup->mesh_id, ifmsh->mesh_id_len); 1805 ifmsh->mesh_sp_id = setup->sync_method; 1806 ifmsh->mesh_pp_id = setup->path_sel_proto; 1807 ifmsh->mesh_pm_id = setup->path_metric; 1808 ifmsh->user_mpm = setup->user_mpm; 1809 ifmsh->mesh_auth_id = setup->auth_id; 1810 ifmsh->security = IEEE80211_MESH_SEC_NONE; 1811 if (setup->is_authenticated) 1812 ifmsh->security |= IEEE80211_MESH_SEC_AUTHED; 1813 if (setup->is_secure) 1814 ifmsh->security |= IEEE80211_MESH_SEC_SECURED; 1815 1816 /* mcast rate setting in Mesh Node */ 1817 memcpy(sdata->vif.bss_conf.mcast_rate, setup->mcast_rate, 1818 sizeof(setup->mcast_rate)); 1819 sdata->vif.bss_conf.basic_rates = setup->basic_rates; 1820 1821 sdata->vif.bss_conf.beacon_int = setup->beacon_interval; 1822 sdata->vif.bss_conf.dtim_period = setup->dtim_period; 1823 1824 return 0; 1825 } 1826 1827 static int ieee80211_update_mesh_config(struct wiphy *wiphy, 1828 struct net_device *dev, u32 mask, 1829 const struct mesh_config *nconf) 1830 { 1831 struct mesh_config *conf; 1832 struct ieee80211_sub_if_data *sdata; 1833 struct ieee80211_if_mesh *ifmsh; 1834 1835 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1836 ifmsh = &sdata->u.mesh; 1837 1838 /* Set the config options which we are interested in setting */ 1839 conf = &(sdata->u.mesh.mshcfg); 1840 if (_chg_mesh_attr(NL80211_MESHCONF_RETRY_TIMEOUT, mask)) 1841 conf->dot11MeshRetryTimeout = nconf->dot11MeshRetryTimeout; 1842 if (_chg_mesh_attr(NL80211_MESHCONF_CONFIRM_TIMEOUT, mask)) 1843 conf->dot11MeshConfirmTimeout = nconf->dot11MeshConfirmTimeout; 1844 if (_chg_mesh_attr(NL80211_MESHCONF_HOLDING_TIMEOUT, mask)) 1845 conf->dot11MeshHoldingTimeout = nconf->dot11MeshHoldingTimeout; 1846 if (_chg_mesh_attr(NL80211_MESHCONF_MAX_PEER_LINKS, mask)) 1847 conf->dot11MeshMaxPeerLinks = nconf->dot11MeshMaxPeerLinks; 1848 if (_chg_mesh_attr(NL80211_MESHCONF_MAX_RETRIES, mask)) 1849 conf->dot11MeshMaxRetries = nconf->dot11MeshMaxRetries; 1850 if (_chg_mesh_attr(NL80211_MESHCONF_TTL, mask)) 1851 conf->dot11MeshTTL = nconf->dot11MeshTTL; 1852 if (_chg_mesh_attr(NL80211_MESHCONF_ELEMENT_TTL, mask)) 1853 conf->element_ttl = nconf->element_ttl; 1854 if (_chg_mesh_attr(NL80211_MESHCONF_AUTO_OPEN_PLINKS, mask)) { 1855 if (ifmsh->user_mpm) 1856 return -EBUSY; 1857 conf->auto_open_plinks = nconf->auto_open_plinks; 1858 } 1859 if (_chg_mesh_attr(NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR, mask)) 1860 conf->dot11MeshNbrOffsetMaxNeighbor = 1861 nconf->dot11MeshNbrOffsetMaxNeighbor; 1862 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES, mask)) 1863 conf->dot11MeshHWMPmaxPREQretries = 1864 nconf->dot11MeshHWMPmaxPREQretries; 1865 if (_chg_mesh_attr(NL80211_MESHCONF_PATH_REFRESH_TIME, mask)) 1866 conf->path_refresh_time = nconf->path_refresh_time; 1867 if (_chg_mesh_attr(NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT, mask)) 1868 conf->min_discovery_timeout = nconf->min_discovery_timeout; 1869 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT, mask)) 1870 conf->dot11MeshHWMPactivePathTimeout = 1871 nconf->dot11MeshHWMPactivePathTimeout; 1872 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL, mask)) 1873 conf->dot11MeshHWMPpreqMinInterval = 1874 nconf->dot11MeshHWMPpreqMinInterval; 1875 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL, mask)) 1876 conf->dot11MeshHWMPperrMinInterval = 1877 nconf->dot11MeshHWMPperrMinInterval; 1878 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME, 1879 mask)) 1880 conf->dot11MeshHWMPnetDiameterTraversalTime = 1881 nconf->dot11MeshHWMPnetDiameterTraversalTime; 1882 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOTMODE, mask)) { 1883 conf->dot11MeshHWMPRootMode = nconf->dot11MeshHWMPRootMode; 1884 ieee80211_mesh_root_setup(ifmsh); 1885 } 1886 if (_chg_mesh_attr(NL80211_MESHCONF_GATE_ANNOUNCEMENTS, mask)) { 1887 /* our current gate announcement implementation rides on root 1888 * announcements, so require this ifmsh to also be a root node 1889 * */ 1890 if (nconf->dot11MeshGateAnnouncementProtocol && 1891 !(conf->dot11MeshHWMPRootMode > IEEE80211_ROOTMODE_ROOT)) { 1892 conf->dot11MeshHWMPRootMode = IEEE80211_PROACTIVE_RANN; 1893 ieee80211_mesh_root_setup(ifmsh); 1894 } 1895 conf->dot11MeshGateAnnouncementProtocol = 1896 nconf->dot11MeshGateAnnouncementProtocol; 1897 } 1898 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_RANN_INTERVAL, mask)) 1899 conf->dot11MeshHWMPRannInterval = 1900 nconf->dot11MeshHWMPRannInterval; 1901 if (_chg_mesh_attr(NL80211_MESHCONF_FORWARDING, mask)) 1902 conf->dot11MeshForwarding = nconf->dot11MeshForwarding; 1903 if (_chg_mesh_attr(NL80211_MESHCONF_RSSI_THRESHOLD, mask)) { 1904 /* our RSSI threshold implementation is supported only for 1905 * devices that report signal in dBm. 1906 */ 1907 if (!(sdata->local->hw.flags & IEEE80211_HW_SIGNAL_DBM)) 1908 return -ENOTSUPP; 1909 conf->rssi_threshold = nconf->rssi_threshold; 1910 } 1911 if (_chg_mesh_attr(NL80211_MESHCONF_HT_OPMODE, mask)) { 1912 conf->ht_opmode = nconf->ht_opmode; 1913 sdata->vif.bss_conf.ht_operation_mode = nconf->ht_opmode; 1914 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_HT); 1915 } 1916 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT, mask)) 1917 conf->dot11MeshHWMPactivePathToRootTimeout = 1918 nconf->dot11MeshHWMPactivePathToRootTimeout; 1919 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOT_INTERVAL, mask)) 1920 conf->dot11MeshHWMProotInterval = 1921 nconf->dot11MeshHWMProotInterval; 1922 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL, mask)) 1923 conf->dot11MeshHWMPconfirmationInterval = 1924 nconf->dot11MeshHWMPconfirmationInterval; 1925 if (_chg_mesh_attr(NL80211_MESHCONF_POWER_MODE, mask)) { 1926 conf->power_mode = nconf->power_mode; 1927 ieee80211_mps_local_status_update(sdata); 1928 } 1929 if (_chg_mesh_attr(NL80211_MESHCONF_AWAKE_WINDOW, mask)) 1930 conf->dot11MeshAwakeWindowDuration = 1931 nconf->dot11MeshAwakeWindowDuration; 1932 if (_chg_mesh_attr(NL80211_MESHCONF_PLINK_TIMEOUT, mask)) 1933 conf->plink_timeout = nconf->plink_timeout; 1934 ieee80211_mbss_info_change_notify(sdata, BSS_CHANGED_BEACON); 1935 return 0; 1936 } 1937 1938 static int ieee80211_join_mesh(struct wiphy *wiphy, struct net_device *dev, 1939 const struct mesh_config *conf, 1940 const struct mesh_setup *setup) 1941 { 1942 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1943 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh; 1944 int err; 1945 1946 memcpy(&ifmsh->mshcfg, conf, sizeof(struct mesh_config)); 1947 err = copy_mesh_setup(ifmsh, setup); 1948 if (err) 1949 return err; 1950 1951 /* can mesh use other SMPS modes? */ 1952 sdata->smps_mode = IEEE80211_SMPS_OFF; 1953 sdata->needed_rx_chains = sdata->local->rx_chains; 1954 1955 err = ieee80211_vif_use_channel(sdata, &setup->chandef, 1956 IEEE80211_CHANCTX_SHARED); 1957 if (err) 1958 return err; 1959 1960 return ieee80211_start_mesh(sdata); 1961 } 1962 1963 static int ieee80211_leave_mesh(struct wiphy *wiphy, struct net_device *dev) 1964 { 1965 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1966 1967 ieee80211_stop_mesh(sdata); 1968 ieee80211_vif_release_channel(sdata); 1969 1970 return 0; 1971 } 1972 #endif 1973 1974 static int ieee80211_change_bss(struct wiphy *wiphy, 1975 struct net_device *dev, 1976 struct bss_parameters *params) 1977 { 1978 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1979 enum ieee80211_band band; 1980 u32 changed = 0; 1981 1982 if (!sdata_dereference(sdata->u.ap.beacon, sdata)) 1983 return -ENOENT; 1984 1985 band = ieee80211_get_sdata_band(sdata); 1986 1987 if (params->use_cts_prot >= 0) { 1988 sdata->vif.bss_conf.use_cts_prot = params->use_cts_prot; 1989 changed |= BSS_CHANGED_ERP_CTS_PROT; 1990 } 1991 if (params->use_short_preamble >= 0) { 1992 sdata->vif.bss_conf.use_short_preamble = 1993 params->use_short_preamble; 1994 changed |= BSS_CHANGED_ERP_PREAMBLE; 1995 } 1996 1997 if (!sdata->vif.bss_conf.use_short_slot && 1998 band == IEEE80211_BAND_5GHZ) { 1999 sdata->vif.bss_conf.use_short_slot = true; 2000 changed |= BSS_CHANGED_ERP_SLOT; 2001 } 2002 2003 if (params->use_short_slot_time >= 0) { 2004 sdata->vif.bss_conf.use_short_slot = 2005 params->use_short_slot_time; 2006 changed |= BSS_CHANGED_ERP_SLOT; 2007 } 2008 2009 if (params->basic_rates) { 2010 ieee80211_parse_bitrates(&sdata->vif.bss_conf.chandef, 2011 wiphy->bands[band], 2012 params->basic_rates, 2013 params->basic_rates_len, 2014 &sdata->vif.bss_conf.basic_rates); 2015 changed |= BSS_CHANGED_BASIC_RATES; 2016 } 2017 2018 if (params->ap_isolate >= 0) { 2019 if (params->ap_isolate) 2020 sdata->flags |= IEEE80211_SDATA_DONT_BRIDGE_PACKETS; 2021 else 2022 sdata->flags &= ~IEEE80211_SDATA_DONT_BRIDGE_PACKETS; 2023 } 2024 2025 if (params->ht_opmode >= 0) { 2026 sdata->vif.bss_conf.ht_operation_mode = 2027 (u16) params->ht_opmode; 2028 changed |= BSS_CHANGED_HT; 2029 } 2030 2031 if (params->p2p_ctwindow >= 0) { 2032 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow &= 2033 ~IEEE80211_P2P_OPPPS_CTWINDOW_MASK; 2034 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |= 2035 params->p2p_ctwindow & IEEE80211_P2P_OPPPS_CTWINDOW_MASK; 2036 changed |= BSS_CHANGED_P2P_PS; 2037 } 2038 2039 if (params->p2p_opp_ps > 0) { 2040 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |= 2041 IEEE80211_P2P_OPPPS_ENABLE_BIT; 2042 changed |= BSS_CHANGED_P2P_PS; 2043 } else if (params->p2p_opp_ps == 0) { 2044 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow &= 2045 ~IEEE80211_P2P_OPPPS_ENABLE_BIT; 2046 changed |= BSS_CHANGED_P2P_PS; 2047 } 2048 2049 ieee80211_bss_info_change_notify(sdata, changed); 2050 2051 return 0; 2052 } 2053 2054 static int ieee80211_set_txq_params(struct wiphy *wiphy, 2055 struct net_device *dev, 2056 struct ieee80211_txq_params *params) 2057 { 2058 struct ieee80211_local *local = wiphy_priv(wiphy); 2059 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2060 struct ieee80211_tx_queue_params p; 2061 2062 if (!local->ops->conf_tx) 2063 return -EOPNOTSUPP; 2064 2065 if (local->hw.queues < IEEE80211_NUM_ACS) 2066 return -EOPNOTSUPP; 2067 2068 memset(&p, 0, sizeof(p)); 2069 p.aifs = params->aifs; 2070 p.cw_max = params->cwmax; 2071 p.cw_min = params->cwmin; 2072 p.txop = params->txop; 2073 2074 /* 2075 * Setting tx queue params disables u-apsd because it's only 2076 * called in master mode. 2077 */ 2078 p.uapsd = false; 2079 2080 sdata->tx_conf[params->ac] = p; 2081 if (drv_conf_tx(local, sdata, params->ac, &p)) { 2082 wiphy_debug(local->hw.wiphy, 2083 "failed to set TX queue parameters for AC %d\n", 2084 params->ac); 2085 return -EINVAL; 2086 } 2087 2088 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_QOS); 2089 2090 return 0; 2091 } 2092 2093 #ifdef CONFIG_PM 2094 static int ieee80211_suspend(struct wiphy *wiphy, 2095 struct cfg80211_wowlan *wowlan) 2096 { 2097 return __ieee80211_suspend(wiphy_priv(wiphy), wowlan); 2098 } 2099 2100 static int ieee80211_resume(struct wiphy *wiphy) 2101 { 2102 return __ieee80211_resume(wiphy_priv(wiphy)); 2103 } 2104 #else 2105 #define ieee80211_suspend NULL 2106 #define ieee80211_resume NULL 2107 #endif 2108 2109 static int ieee80211_scan(struct wiphy *wiphy, 2110 struct cfg80211_scan_request *req) 2111 { 2112 struct ieee80211_sub_if_data *sdata; 2113 2114 sdata = IEEE80211_WDEV_TO_SUB_IF(req->wdev); 2115 2116 switch (ieee80211_vif_type_p2p(&sdata->vif)) { 2117 case NL80211_IFTYPE_STATION: 2118 case NL80211_IFTYPE_ADHOC: 2119 case NL80211_IFTYPE_MESH_POINT: 2120 case NL80211_IFTYPE_P2P_CLIENT: 2121 case NL80211_IFTYPE_P2P_DEVICE: 2122 break; 2123 case NL80211_IFTYPE_P2P_GO: 2124 if (sdata->local->ops->hw_scan) 2125 break; 2126 /* 2127 * FIXME: implement NoA while scanning in software, 2128 * for now fall through to allow scanning only when 2129 * beaconing hasn't been configured yet 2130 */ 2131 case NL80211_IFTYPE_AP: 2132 /* 2133 * If the scan has been forced (and the driver supports 2134 * forcing), don't care about being beaconing already. 2135 * This will create problems to the attached stations (e.g. all 2136 * the frames sent while scanning on other channel will be 2137 * lost) 2138 */ 2139 if (sdata->u.ap.beacon && 2140 (!(wiphy->features & NL80211_FEATURE_AP_SCAN) || 2141 !(req->flags & NL80211_SCAN_FLAG_AP))) 2142 return -EOPNOTSUPP; 2143 break; 2144 default: 2145 return -EOPNOTSUPP; 2146 } 2147 2148 return ieee80211_request_scan(sdata, req); 2149 } 2150 2151 static int 2152 ieee80211_sched_scan_start(struct wiphy *wiphy, 2153 struct net_device *dev, 2154 struct cfg80211_sched_scan_request *req) 2155 { 2156 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2157 2158 if (!sdata->local->ops->sched_scan_start) 2159 return -EOPNOTSUPP; 2160 2161 return ieee80211_request_sched_scan_start(sdata, req); 2162 } 2163 2164 static int 2165 ieee80211_sched_scan_stop(struct wiphy *wiphy, struct net_device *dev) 2166 { 2167 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2168 2169 if (!sdata->local->ops->sched_scan_stop) 2170 return -EOPNOTSUPP; 2171 2172 return ieee80211_request_sched_scan_stop(sdata); 2173 } 2174 2175 static int ieee80211_auth(struct wiphy *wiphy, struct net_device *dev, 2176 struct cfg80211_auth_request *req) 2177 { 2178 return ieee80211_mgd_auth(IEEE80211_DEV_TO_SUB_IF(dev), req); 2179 } 2180 2181 static int ieee80211_assoc(struct wiphy *wiphy, struct net_device *dev, 2182 struct cfg80211_assoc_request *req) 2183 { 2184 return ieee80211_mgd_assoc(IEEE80211_DEV_TO_SUB_IF(dev), req); 2185 } 2186 2187 static int ieee80211_deauth(struct wiphy *wiphy, struct net_device *dev, 2188 struct cfg80211_deauth_request *req) 2189 { 2190 return ieee80211_mgd_deauth(IEEE80211_DEV_TO_SUB_IF(dev), req); 2191 } 2192 2193 static int ieee80211_disassoc(struct wiphy *wiphy, struct net_device *dev, 2194 struct cfg80211_disassoc_request *req) 2195 { 2196 return ieee80211_mgd_disassoc(IEEE80211_DEV_TO_SUB_IF(dev), req); 2197 } 2198 2199 static int ieee80211_join_ibss(struct wiphy *wiphy, struct net_device *dev, 2200 struct cfg80211_ibss_params *params) 2201 { 2202 return ieee80211_ibss_join(IEEE80211_DEV_TO_SUB_IF(dev), params); 2203 } 2204 2205 static int ieee80211_leave_ibss(struct wiphy *wiphy, struct net_device *dev) 2206 { 2207 return ieee80211_ibss_leave(IEEE80211_DEV_TO_SUB_IF(dev)); 2208 } 2209 2210 static int ieee80211_set_mcast_rate(struct wiphy *wiphy, struct net_device *dev, 2211 int rate[IEEE80211_NUM_BANDS]) 2212 { 2213 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2214 2215 memcpy(sdata->vif.bss_conf.mcast_rate, rate, 2216 sizeof(int) * IEEE80211_NUM_BANDS); 2217 2218 return 0; 2219 } 2220 2221 static int ieee80211_set_wiphy_params(struct wiphy *wiphy, u32 changed) 2222 { 2223 struct ieee80211_local *local = wiphy_priv(wiphy); 2224 int err; 2225 2226 if (changed & WIPHY_PARAM_FRAG_THRESHOLD) { 2227 err = drv_set_frag_threshold(local, wiphy->frag_threshold); 2228 2229 if (err) 2230 return err; 2231 } 2232 2233 if (changed & WIPHY_PARAM_COVERAGE_CLASS) { 2234 err = drv_set_coverage_class(local, wiphy->coverage_class); 2235 2236 if (err) 2237 return err; 2238 } 2239 2240 if (changed & WIPHY_PARAM_RTS_THRESHOLD) { 2241 err = drv_set_rts_threshold(local, wiphy->rts_threshold); 2242 2243 if (err) 2244 return err; 2245 } 2246 2247 if (changed & WIPHY_PARAM_RETRY_SHORT) { 2248 if (wiphy->retry_short > IEEE80211_MAX_TX_RETRY) 2249 return -EINVAL; 2250 local->hw.conf.short_frame_max_tx_count = wiphy->retry_short; 2251 } 2252 if (changed & WIPHY_PARAM_RETRY_LONG) { 2253 if (wiphy->retry_long > IEEE80211_MAX_TX_RETRY) 2254 return -EINVAL; 2255 local->hw.conf.long_frame_max_tx_count = wiphy->retry_long; 2256 } 2257 if (changed & 2258 (WIPHY_PARAM_RETRY_SHORT | WIPHY_PARAM_RETRY_LONG)) 2259 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_RETRY_LIMITS); 2260 2261 return 0; 2262 } 2263 2264 static int ieee80211_set_tx_power(struct wiphy *wiphy, 2265 struct wireless_dev *wdev, 2266 enum nl80211_tx_power_setting type, int mbm) 2267 { 2268 struct ieee80211_local *local = wiphy_priv(wiphy); 2269 struct ieee80211_sub_if_data *sdata; 2270 2271 if (wdev) { 2272 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 2273 2274 switch (type) { 2275 case NL80211_TX_POWER_AUTOMATIC: 2276 sdata->user_power_level = IEEE80211_UNSET_POWER_LEVEL; 2277 break; 2278 case NL80211_TX_POWER_LIMITED: 2279 case NL80211_TX_POWER_FIXED: 2280 if (mbm < 0 || (mbm % 100)) 2281 return -EOPNOTSUPP; 2282 sdata->user_power_level = MBM_TO_DBM(mbm); 2283 break; 2284 } 2285 2286 ieee80211_recalc_txpower(sdata); 2287 2288 return 0; 2289 } 2290 2291 switch (type) { 2292 case NL80211_TX_POWER_AUTOMATIC: 2293 local->user_power_level = IEEE80211_UNSET_POWER_LEVEL; 2294 break; 2295 case NL80211_TX_POWER_LIMITED: 2296 case NL80211_TX_POWER_FIXED: 2297 if (mbm < 0 || (mbm % 100)) 2298 return -EOPNOTSUPP; 2299 local->user_power_level = MBM_TO_DBM(mbm); 2300 break; 2301 } 2302 2303 mutex_lock(&local->iflist_mtx); 2304 list_for_each_entry(sdata, &local->interfaces, list) 2305 sdata->user_power_level = local->user_power_level; 2306 list_for_each_entry(sdata, &local->interfaces, list) 2307 ieee80211_recalc_txpower(sdata); 2308 mutex_unlock(&local->iflist_mtx); 2309 2310 return 0; 2311 } 2312 2313 static int ieee80211_get_tx_power(struct wiphy *wiphy, 2314 struct wireless_dev *wdev, 2315 int *dbm) 2316 { 2317 struct ieee80211_local *local = wiphy_priv(wiphy); 2318 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 2319 2320 if (!local->use_chanctx) 2321 *dbm = local->hw.conf.power_level; 2322 else 2323 *dbm = sdata->vif.bss_conf.txpower; 2324 2325 return 0; 2326 } 2327 2328 static int ieee80211_set_wds_peer(struct wiphy *wiphy, struct net_device *dev, 2329 const u8 *addr) 2330 { 2331 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2332 2333 memcpy(&sdata->u.wds.remote_addr, addr, ETH_ALEN); 2334 2335 return 0; 2336 } 2337 2338 static void ieee80211_rfkill_poll(struct wiphy *wiphy) 2339 { 2340 struct ieee80211_local *local = wiphy_priv(wiphy); 2341 2342 drv_rfkill_poll(local); 2343 } 2344 2345 #ifdef CONFIG_NL80211_TESTMODE 2346 static int ieee80211_testmode_cmd(struct wiphy *wiphy, 2347 struct wireless_dev *wdev, 2348 void *data, int len) 2349 { 2350 struct ieee80211_local *local = wiphy_priv(wiphy); 2351 struct ieee80211_vif *vif = NULL; 2352 2353 if (!local->ops->testmode_cmd) 2354 return -EOPNOTSUPP; 2355 2356 if (wdev) { 2357 struct ieee80211_sub_if_data *sdata; 2358 2359 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 2360 if (sdata->flags & IEEE80211_SDATA_IN_DRIVER) 2361 vif = &sdata->vif; 2362 } 2363 2364 return local->ops->testmode_cmd(&local->hw, vif, data, len); 2365 } 2366 2367 static int ieee80211_testmode_dump(struct wiphy *wiphy, 2368 struct sk_buff *skb, 2369 struct netlink_callback *cb, 2370 void *data, int len) 2371 { 2372 struct ieee80211_local *local = wiphy_priv(wiphy); 2373 2374 if (!local->ops->testmode_dump) 2375 return -EOPNOTSUPP; 2376 2377 return local->ops->testmode_dump(&local->hw, skb, cb, data, len); 2378 } 2379 #endif 2380 2381 int __ieee80211_request_smps_ap(struct ieee80211_sub_if_data *sdata, 2382 enum ieee80211_smps_mode smps_mode) 2383 { 2384 struct sta_info *sta; 2385 enum ieee80211_smps_mode old_req; 2386 int i; 2387 2388 if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_AP)) 2389 return -EINVAL; 2390 2391 if (sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_20_NOHT) 2392 return 0; 2393 2394 old_req = sdata->u.ap.req_smps; 2395 sdata->u.ap.req_smps = smps_mode; 2396 2397 /* AUTOMATIC doesn't mean much for AP - don't allow it */ 2398 if (old_req == smps_mode || 2399 smps_mode == IEEE80211_SMPS_AUTOMATIC) 2400 return 0; 2401 2402 /* If no associated stations, there's no need to do anything */ 2403 if (!atomic_read(&sdata->u.ap.num_mcast_sta)) { 2404 sdata->smps_mode = smps_mode; 2405 ieee80211_queue_work(&sdata->local->hw, &sdata->recalc_smps); 2406 return 0; 2407 } 2408 2409 ht_dbg(sdata, 2410 "SMSP %d requested in AP mode, sending Action frame to %d stations\n", 2411 smps_mode, atomic_read(&sdata->u.ap.num_mcast_sta)); 2412 2413 mutex_lock(&sdata->local->sta_mtx); 2414 for (i = 0; i < STA_HASH_SIZE; i++) { 2415 for (sta = rcu_dereference_protected(sdata->local->sta_hash[i], 2416 lockdep_is_held(&sdata->local->sta_mtx)); 2417 sta; 2418 sta = rcu_dereference_protected(sta->hnext, 2419 lockdep_is_held(&sdata->local->sta_mtx))) { 2420 /* 2421 * Only stations associated to our AP and 2422 * associated VLANs 2423 */ 2424 if (sta->sdata->bss != &sdata->u.ap) 2425 continue; 2426 2427 /* This station doesn't support MIMO - skip it */ 2428 if (sta_info_tx_streams(sta) == 1) 2429 continue; 2430 2431 /* 2432 * Don't wake up a STA just to send the action frame 2433 * unless we are getting more restrictive. 2434 */ 2435 if (test_sta_flag(sta, WLAN_STA_PS_STA) && 2436 !ieee80211_smps_is_restrictive(sta->known_smps_mode, 2437 smps_mode)) { 2438 ht_dbg(sdata, 2439 "Won't send SMPS to sleeping STA %pM\n", 2440 sta->sta.addr); 2441 continue; 2442 } 2443 2444 /* 2445 * If the STA is not authorized, wait until it gets 2446 * authorized and the action frame will be sent then. 2447 */ 2448 if (!test_sta_flag(sta, WLAN_STA_AUTHORIZED)) 2449 continue; 2450 2451 ht_dbg(sdata, "Sending SMPS to %pM\n", sta->sta.addr); 2452 ieee80211_send_smps_action(sdata, smps_mode, 2453 sta->sta.addr, 2454 sdata->vif.bss_conf.bssid); 2455 } 2456 } 2457 mutex_unlock(&sdata->local->sta_mtx); 2458 2459 sdata->smps_mode = smps_mode; 2460 ieee80211_queue_work(&sdata->local->hw, &sdata->recalc_smps); 2461 2462 return 0; 2463 } 2464 2465 int __ieee80211_request_smps_mgd(struct ieee80211_sub_if_data *sdata, 2466 enum ieee80211_smps_mode smps_mode) 2467 { 2468 const u8 *ap; 2469 enum ieee80211_smps_mode old_req; 2470 int err; 2471 2472 lockdep_assert_held(&sdata->wdev.mtx); 2473 2474 if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_STATION)) 2475 return -EINVAL; 2476 2477 old_req = sdata->u.mgd.req_smps; 2478 sdata->u.mgd.req_smps = smps_mode; 2479 2480 if (old_req == smps_mode && 2481 smps_mode != IEEE80211_SMPS_AUTOMATIC) 2482 return 0; 2483 2484 /* 2485 * If not associated, or current association is not an HT 2486 * association, there's no need to do anything, just store 2487 * the new value until we associate. 2488 */ 2489 if (!sdata->u.mgd.associated || 2490 sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_20_NOHT) 2491 return 0; 2492 2493 ap = sdata->u.mgd.associated->bssid; 2494 2495 if (smps_mode == IEEE80211_SMPS_AUTOMATIC) { 2496 if (sdata->u.mgd.powersave) 2497 smps_mode = IEEE80211_SMPS_DYNAMIC; 2498 else 2499 smps_mode = IEEE80211_SMPS_OFF; 2500 } 2501 2502 /* send SM PS frame to AP */ 2503 err = ieee80211_send_smps_action(sdata, smps_mode, 2504 ap, ap); 2505 if (err) 2506 sdata->u.mgd.req_smps = old_req; 2507 2508 return err; 2509 } 2510 2511 static int ieee80211_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev, 2512 bool enabled, int timeout) 2513 { 2514 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2515 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); 2516 2517 if (sdata->vif.type != NL80211_IFTYPE_STATION) 2518 return -EOPNOTSUPP; 2519 2520 if (!(local->hw.flags & IEEE80211_HW_SUPPORTS_PS)) 2521 return -EOPNOTSUPP; 2522 2523 if (enabled == sdata->u.mgd.powersave && 2524 timeout == local->dynamic_ps_forced_timeout) 2525 return 0; 2526 2527 sdata->u.mgd.powersave = enabled; 2528 local->dynamic_ps_forced_timeout = timeout; 2529 2530 /* no change, but if automatic follow powersave */ 2531 sdata_lock(sdata); 2532 __ieee80211_request_smps_mgd(sdata, sdata->u.mgd.req_smps); 2533 sdata_unlock(sdata); 2534 2535 if (local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_PS) 2536 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS); 2537 2538 ieee80211_recalc_ps(local, -1); 2539 ieee80211_recalc_ps_vif(sdata); 2540 2541 return 0; 2542 } 2543 2544 static int ieee80211_set_cqm_rssi_config(struct wiphy *wiphy, 2545 struct net_device *dev, 2546 s32 rssi_thold, u32 rssi_hyst) 2547 { 2548 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2549 struct ieee80211_vif *vif = &sdata->vif; 2550 struct ieee80211_bss_conf *bss_conf = &vif->bss_conf; 2551 2552 if (rssi_thold == bss_conf->cqm_rssi_thold && 2553 rssi_hyst == bss_conf->cqm_rssi_hyst) 2554 return 0; 2555 2556 bss_conf->cqm_rssi_thold = rssi_thold; 2557 bss_conf->cqm_rssi_hyst = rssi_hyst; 2558 2559 /* tell the driver upon association, unless already associated */ 2560 if (sdata->u.mgd.associated && 2561 sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI) 2562 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_CQM); 2563 2564 return 0; 2565 } 2566 2567 static int ieee80211_set_bitrate_mask(struct wiphy *wiphy, 2568 struct net_device *dev, 2569 const u8 *addr, 2570 const struct cfg80211_bitrate_mask *mask) 2571 { 2572 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2573 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); 2574 int i, ret; 2575 2576 if (!ieee80211_sdata_running(sdata)) 2577 return -ENETDOWN; 2578 2579 if (local->hw.flags & IEEE80211_HW_HAS_RATE_CONTROL) { 2580 ret = drv_set_bitrate_mask(local, sdata, mask); 2581 if (ret) 2582 return ret; 2583 } 2584 2585 for (i = 0; i < IEEE80211_NUM_BANDS; i++) { 2586 struct ieee80211_supported_band *sband = wiphy->bands[i]; 2587 int j; 2588 2589 sdata->rc_rateidx_mask[i] = mask->control[i].legacy; 2590 memcpy(sdata->rc_rateidx_mcs_mask[i], mask->control[i].mcs, 2591 sizeof(mask->control[i].mcs)); 2592 2593 sdata->rc_has_mcs_mask[i] = false; 2594 if (!sband) 2595 continue; 2596 2597 for (j = 0; j < IEEE80211_HT_MCS_MASK_LEN; j++) 2598 if (~sdata->rc_rateidx_mcs_mask[i][j]) { 2599 sdata->rc_has_mcs_mask[i] = true; 2600 break; 2601 } 2602 } 2603 2604 return 0; 2605 } 2606 2607 static int ieee80211_start_roc_work(struct ieee80211_local *local, 2608 struct ieee80211_sub_if_data *sdata, 2609 struct ieee80211_channel *channel, 2610 unsigned int duration, u64 *cookie, 2611 struct sk_buff *txskb, 2612 enum ieee80211_roc_type type) 2613 { 2614 struct ieee80211_roc_work *roc, *tmp; 2615 bool queued = false; 2616 int ret; 2617 2618 lockdep_assert_held(&local->mtx); 2619 2620 if (local->use_chanctx && !local->ops->remain_on_channel) 2621 return -EOPNOTSUPP; 2622 2623 roc = kzalloc(sizeof(*roc), GFP_KERNEL); 2624 if (!roc) 2625 return -ENOMEM; 2626 2627 roc->chan = channel; 2628 roc->duration = duration; 2629 roc->req_duration = duration; 2630 roc->frame = txskb; 2631 roc->type = type; 2632 roc->mgmt_tx_cookie = (unsigned long)txskb; 2633 roc->sdata = sdata; 2634 INIT_DELAYED_WORK(&roc->work, ieee80211_sw_roc_work); 2635 INIT_LIST_HEAD(&roc->dependents); 2636 2637 /* if there's one pending or we're scanning, queue this one */ 2638 if (!list_empty(&local->roc_list) || 2639 local->scanning || local->radar_detect_enabled) 2640 goto out_check_combine; 2641 2642 /* if not HW assist, just queue & schedule work */ 2643 if (!local->ops->remain_on_channel) { 2644 ieee80211_queue_delayed_work(&local->hw, &roc->work, 0); 2645 goto out_queue; 2646 } 2647 2648 /* otherwise actually kick it off here (for error handling) */ 2649 2650 /* 2651 * If the duration is zero, then the driver 2652 * wouldn't actually do anything. Set it to 2653 * 10 for now. 2654 * 2655 * TODO: cancel the off-channel operation 2656 * when we get the SKB's TX status and 2657 * the wait time was zero before. 2658 */ 2659 if (!duration) 2660 duration = 10; 2661 2662 ret = drv_remain_on_channel(local, sdata, channel, duration, type); 2663 if (ret) { 2664 kfree(roc); 2665 return ret; 2666 } 2667 2668 roc->started = true; 2669 goto out_queue; 2670 2671 out_check_combine: 2672 list_for_each_entry(tmp, &local->roc_list, list) { 2673 if (tmp->chan != channel || tmp->sdata != sdata) 2674 continue; 2675 2676 /* 2677 * Extend this ROC if possible: 2678 * 2679 * If it hasn't started yet, just increase the duration 2680 * and add the new one to the list of dependents. 2681 * If the type of the new ROC has higher priority, modify the 2682 * type of the previous one to match that of the new one. 2683 */ 2684 if (!tmp->started) { 2685 list_add_tail(&roc->list, &tmp->dependents); 2686 tmp->duration = max(tmp->duration, roc->duration); 2687 tmp->type = max(tmp->type, roc->type); 2688 queued = true; 2689 break; 2690 } 2691 2692 /* If it has already started, it's more difficult ... */ 2693 if (local->ops->remain_on_channel) { 2694 unsigned long j = jiffies; 2695 2696 /* 2697 * In the offloaded ROC case, if it hasn't begun, add 2698 * this new one to the dependent list to be handled 2699 * when the master one begins. If it has begun, 2700 * check that there's still a minimum time left and 2701 * if so, start this one, transmitting the frame, but 2702 * add it to the list directly after this one with 2703 * a reduced time so we'll ask the driver to execute 2704 * it right after finishing the previous one, in the 2705 * hope that it'll also be executed right afterwards, 2706 * effectively extending the old one. 2707 * If there's no minimum time left, just add it to the 2708 * normal list. 2709 * TODO: the ROC type is ignored here, assuming that it 2710 * is better to immediately use the current ROC. 2711 */ 2712 if (!tmp->hw_begun) { 2713 list_add_tail(&roc->list, &tmp->dependents); 2714 queued = true; 2715 break; 2716 } 2717 2718 if (time_before(j + IEEE80211_ROC_MIN_LEFT, 2719 tmp->hw_start_time + 2720 msecs_to_jiffies(tmp->duration))) { 2721 int new_dur; 2722 2723 ieee80211_handle_roc_started(roc); 2724 2725 new_dur = roc->duration - 2726 jiffies_to_msecs(tmp->hw_start_time + 2727 msecs_to_jiffies( 2728 tmp->duration) - 2729 j); 2730 2731 if (new_dur > 0) { 2732 /* add right after tmp */ 2733 list_add(&roc->list, &tmp->list); 2734 } else { 2735 list_add_tail(&roc->list, 2736 &tmp->dependents); 2737 } 2738 queued = true; 2739 } 2740 } else if (del_timer_sync(&tmp->work.timer)) { 2741 unsigned long new_end; 2742 2743 /* 2744 * In the software ROC case, cancel the timer, if 2745 * that fails then the finish work is already 2746 * queued/pending and thus we queue the new ROC 2747 * normally, if that succeeds then we can extend 2748 * the timer duration and TX the frame (if any.) 2749 */ 2750 2751 list_add_tail(&roc->list, &tmp->dependents); 2752 queued = true; 2753 2754 new_end = jiffies + msecs_to_jiffies(roc->duration); 2755 2756 /* ok, it was started & we canceled timer */ 2757 if (time_after(new_end, tmp->work.timer.expires)) 2758 mod_timer(&tmp->work.timer, new_end); 2759 else 2760 add_timer(&tmp->work.timer); 2761 2762 ieee80211_handle_roc_started(roc); 2763 } 2764 break; 2765 } 2766 2767 out_queue: 2768 if (!queued) 2769 list_add_tail(&roc->list, &local->roc_list); 2770 2771 /* 2772 * cookie is either the roc cookie (for normal roc) 2773 * or the SKB (for mgmt TX) 2774 */ 2775 if (!txskb) { 2776 /* local->mtx protects this */ 2777 local->roc_cookie_counter++; 2778 roc->cookie = local->roc_cookie_counter; 2779 /* wow, you wrapped 64 bits ... more likely a bug */ 2780 if (WARN_ON(roc->cookie == 0)) { 2781 roc->cookie = 1; 2782 local->roc_cookie_counter++; 2783 } 2784 *cookie = roc->cookie; 2785 } else { 2786 *cookie = (unsigned long)txskb; 2787 } 2788 2789 return 0; 2790 } 2791 2792 static int ieee80211_remain_on_channel(struct wiphy *wiphy, 2793 struct wireless_dev *wdev, 2794 struct ieee80211_channel *chan, 2795 unsigned int duration, 2796 u64 *cookie) 2797 { 2798 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 2799 struct ieee80211_local *local = sdata->local; 2800 int ret; 2801 2802 mutex_lock(&local->mtx); 2803 ret = ieee80211_start_roc_work(local, sdata, chan, 2804 duration, cookie, NULL, 2805 IEEE80211_ROC_TYPE_NORMAL); 2806 mutex_unlock(&local->mtx); 2807 2808 return ret; 2809 } 2810 2811 static int ieee80211_cancel_roc(struct ieee80211_local *local, 2812 u64 cookie, bool mgmt_tx) 2813 { 2814 struct ieee80211_roc_work *roc, *tmp, *found = NULL; 2815 int ret; 2816 2817 mutex_lock(&local->mtx); 2818 list_for_each_entry_safe(roc, tmp, &local->roc_list, list) { 2819 struct ieee80211_roc_work *dep, *tmp2; 2820 2821 list_for_each_entry_safe(dep, tmp2, &roc->dependents, list) { 2822 if (!mgmt_tx && dep->cookie != cookie) 2823 continue; 2824 else if (mgmt_tx && dep->mgmt_tx_cookie != cookie) 2825 continue; 2826 /* found dependent item -- just remove it */ 2827 list_del(&dep->list); 2828 mutex_unlock(&local->mtx); 2829 2830 ieee80211_roc_notify_destroy(dep, true); 2831 return 0; 2832 } 2833 2834 if (!mgmt_tx && roc->cookie != cookie) 2835 continue; 2836 else if (mgmt_tx && roc->mgmt_tx_cookie != cookie) 2837 continue; 2838 2839 found = roc; 2840 break; 2841 } 2842 2843 if (!found) { 2844 mutex_unlock(&local->mtx); 2845 return -ENOENT; 2846 } 2847 2848 /* 2849 * We found the item to cancel, so do that. Note that it 2850 * may have dependents, which we also cancel (and send 2851 * the expired signal for.) Not doing so would be quite 2852 * tricky here, but we may need to fix it later. 2853 */ 2854 2855 if (local->ops->remain_on_channel) { 2856 if (found->started) { 2857 ret = drv_cancel_remain_on_channel(local); 2858 if (WARN_ON_ONCE(ret)) { 2859 mutex_unlock(&local->mtx); 2860 return ret; 2861 } 2862 } 2863 2864 list_del(&found->list); 2865 2866 if (found->started) 2867 ieee80211_start_next_roc(local); 2868 mutex_unlock(&local->mtx); 2869 2870 ieee80211_roc_notify_destroy(found, true); 2871 } else { 2872 /* work may be pending so use it all the time */ 2873 found->abort = true; 2874 ieee80211_queue_delayed_work(&local->hw, &found->work, 0); 2875 2876 mutex_unlock(&local->mtx); 2877 2878 /* work will clean up etc */ 2879 flush_delayed_work(&found->work); 2880 WARN_ON(!found->to_be_freed); 2881 kfree(found); 2882 } 2883 2884 return 0; 2885 } 2886 2887 static int ieee80211_cancel_remain_on_channel(struct wiphy *wiphy, 2888 struct wireless_dev *wdev, 2889 u64 cookie) 2890 { 2891 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 2892 struct ieee80211_local *local = sdata->local; 2893 2894 return ieee80211_cancel_roc(local, cookie, false); 2895 } 2896 2897 static int ieee80211_start_radar_detection(struct wiphy *wiphy, 2898 struct net_device *dev, 2899 struct cfg80211_chan_def *chandef) 2900 { 2901 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2902 struct ieee80211_local *local = sdata->local; 2903 unsigned long timeout; 2904 int err; 2905 2906 if (!list_empty(&local->roc_list) || local->scanning) 2907 return -EBUSY; 2908 2909 /* whatever, but channel contexts should not complain about that one */ 2910 sdata->smps_mode = IEEE80211_SMPS_OFF; 2911 sdata->needed_rx_chains = local->rx_chains; 2912 sdata->radar_required = true; 2913 2914 mutex_lock(&local->iflist_mtx); 2915 err = ieee80211_vif_use_channel(sdata, chandef, 2916 IEEE80211_CHANCTX_SHARED); 2917 mutex_unlock(&local->iflist_mtx); 2918 if (err) 2919 return err; 2920 2921 timeout = msecs_to_jiffies(IEEE80211_DFS_MIN_CAC_TIME_MS); 2922 ieee80211_queue_delayed_work(&sdata->local->hw, 2923 &sdata->dfs_cac_timer_work, timeout); 2924 2925 return 0; 2926 } 2927 2928 static struct cfg80211_beacon_data * 2929 cfg80211_beacon_dup(struct cfg80211_beacon_data *beacon) 2930 { 2931 struct cfg80211_beacon_data *new_beacon; 2932 u8 *pos; 2933 int len; 2934 2935 len = beacon->head_len + beacon->tail_len + beacon->beacon_ies_len + 2936 beacon->proberesp_ies_len + beacon->assocresp_ies_len + 2937 beacon->probe_resp_len; 2938 2939 new_beacon = kzalloc(sizeof(*new_beacon) + len, GFP_KERNEL); 2940 if (!new_beacon) 2941 return NULL; 2942 2943 pos = (u8 *)(new_beacon + 1); 2944 if (beacon->head_len) { 2945 new_beacon->head_len = beacon->head_len; 2946 new_beacon->head = pos; 2947 memcpy(pos, beacon->head, beacon->head_len); 2948 pos += beacon->head_len; 2949 } 2950 if (beacon->tail_len) { 2951 new_beacon->tail_len = beacon->tail_len; 2952 new_beacon->tail = pos; 2953 memcpy(pos, beacon->tail, beacon->tail_len); 2954 pos += beacon->tail_len; 2955 } 2956 if (beacon->beacon_ies_len) { 2957 new_beacon->beacon_ies_len = beacon->beacon_ies_len; 2958 new_beacon->beacon_ies = pos; 2959 memcpy(pos, beacon->beacon_ies, beacon->beacon_ies_len); 2960 pos += beacon->beacon_ies_len; 2961 } 2962 if (beacon->proberesp_ies_len) { 2963 new_beacon->proberesp_ies_len = beacon->proberesp_ies_len; 2964 new_beacon->proberesp_ies = pos; 2965 memcpy(pos, beacon->proberesp_ies, beacon->proberesp_ies_len); 2966 pos += beacon->proberesp_ies_len; 2967 } 2968 if (beacon->assocresp_ies_len) { 2969 new_beacon->assocresp_ies_len = beacon->assocresp_ies_len; 2970 new_beacon->assocresp_ies = pos; 2971 memcpy(pos, beacon->assocresp_ies, beacon->assocresp_ies_len); 2972 pos += beacon->assocresp_ies_len; 2973 } 2974 if (beacon->probe_resp_len) { 2975 new_beacon->probe_resp_len = beacon->probe_resp_len; 2976 beacon->probe_resp = pos; 2977 memcpy(pos, beacon->probe_resp, beacon->probe_resp_len); 2978 pos += beacon->probe_resp_len; 2979 } 2980 2981 return new_beacon; 2982 } 2983 2984 void ieee80211_csa_finalize_work(struct work_struct *work) 2985 { 2986 struct ieee80211_sub_if_data *sdata = 2987 container_of(work, struct ieee80211_sub_if_data, 2988 csa_finalize_work); 2989 struct ieee80211_local *local = sdata->local; 2990 int err, changed = 0; 2991 2992 sdata_lock(sdata); 2993 /* AP might have been stopped while waiting for the lock. */ 2994 if (!sdata->vif.csa_active) 2995 goto unlock; 2996 2997 if (!ieee80211_sdata_running(sdata)) 2998 goto unlock; 2999 3000 sdata->radar_required = sdata->csa_radar_required; 3001 err = ieee80211_vif_change_channel(sdata, &changed); 3002 if (WARN_ON(err < 0)) 3003 goto unlock; 3004 3005 if (!local->use_chanctx) { 3006 local->_oper_chandef = sdata->csa_chandef; 3007 ieee80211_hw_config(local, 0); 3008 } 3009 3010 ieee80211_bss_info_change_notify(sdata, changed); 3011 3012 sdata->vif.csa_active = false; 3013 switch (sdata->vif.type) { 3014 case NL80211_IFTYPE_AP: 3015 err = ieee80211_assign_beacon(sdata, sdata->u.ap.next_beacon); 3016 if (err < 0) 3017 goto unlock; 3018 3019 changed |= err; 3020 kfree(sdata->u.ap.next_beacon); 3021 sdata->u.ap.next_beacon = NULL; 3022 3023 ieee80211_bss_info_change_notify(sdata, err); 3024 break; 3025 case NL80211_IFTYPE_ADHOC: 3026 ieee80211_ibss_finish_csa(sdata); 3027 break; 3028 #ifdef CONFIG_MAC80211_MESH 3029 case NL80211_IFTYPE_MESH_POINT: 3030 err = ieee80211_mesh_finish_csa(sdata); 3031 if (err < 0) 3032 goto unlock; 3033 break; 3034 #endif 3035 default: 3036 WARN_ON(1); 3037 goto unlock; 3038 } 3039 3040 ieee80211_wake_queues_by_reason(&sdata->local->hw, 3041 IEEE80211_MAX_QUEUE_MAP, 3042 IEEE80211_QUEUE_STOP_REASON_CSA); 3043 3044 cfg80211_ch_switch_notify(sdata->dev, &sdata->csa_chandef); 3045 3046 unlock: 3047 sdata_unlock(sdata); 3048 } 3049 3050 static int ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev, 3051 struct cfg80211_csa_settings *params) 3052 { 3053 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 3054 struct ieee80211_local *local = sdata->local; 3055 struct ieee80211_chanctx_conf *chanctx_conf; 3056 struct ieee80211_chanctx *chanctx; 3057 struct ieee80211_if_mesh __maybe_unused *ifmsh; 3058 int err, num_chanctx; 3059 3060 lockdep_assert_held(&sdata->wdev.mtx); 3061 3062 if (!list_empty(&local->roc_list) || local->scanning) 3063 return -EBUSY; 3064 3065 if (sdata->wdev.cac_started) 3066 return -EBUSY; 3067 3068 if (cfg80211_chandef_identical(¶ms->chandef, 3069 &sdata->vif.bss_conf.chandef)) 3070 return -EINVAL; 3071 3072 rcu_read_lock(); 3073 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); 3074 if (!chanctx_conf) { 3075 rcu_read_unlock(); 3076 return -EBUSY; 3077 } 3078 3079 /* don't handle for multi-VIF cases */ 3080 chanctx = container_of(chanctx_conf, struct ieee80211_chanctx, conf); 3081 if (chanctx->refcount > 1) { 3082 rcu_read_unlock(); 3083 return -EBUSY; 3084 } 3085 num_chanctx = 0; 3086 list_for_each_entry_rcu(chanctx, &local->chanctx_list, list) 3087 num_chanctx++; 3088 rcu_read_unlock(); 3089 3090 if (num_chanctx > 1) 3091 return -EBUSY; 3092 3093 /* don't allow another channel switch if one is already active. */ 3094 if (sdata->vif.csa_active) 3095 return -EBUSY; 3096 3097 switch (sdata->vif.type) { 3098 case NL80211_IFTYPE_AP: 3099 sdata->csa_counter_offset_beacon = 3100 params->counter_offset_beacon; 3101 sdata->csa_counter_offset_presp = params->counter_offset_presp; 3102 sdata->u.ap.next_beacon = 3103 cfg80211_beacon_dup(¶ms->beacon_after); 3104 if (!sdata->u.ap.next_beacon) 3105 return -ENOMEM; 3106 3107 err = ieee80211_assign_beacon(sdata, ¶ms->beacon_csa); 3108 if (err < 0) { 3109 kfree(sdata->u.ap.next_beacon); 3110 return err; 3111 } 3112 break; 3113 case NL80211_IFTYPE_ADHOC: 3114 if (!sdata->vif.bss_conf.ibss_joined) 3115 return -EINVAL; 3116 3117 if (params->chandef.width != sdata->u.ibss.chandef.width) 3118 return -EINVAL; 3119 3120 switch (params->chandef.width) { 3121 case NL80211_CHAN_WIDTH_40: 3122 if (cfg80211_get_chandef_type(¶ms->chandef) != 3123 cfg80211_get_chandef_type(&sdata->u.ibss.chandef)) 3124 return -EINVAL; 3125 case NL80211_CHAN_WIDTH_5: 3126 case NL80211_CHAN_WIDTH_10: 3127 case NL80211_CHAN_WIDTH_20_NOHT: 3128 case NL80211_CHAN_WIDTH_20: 3129 break; 3130 default: 3131 return -EINVAL; 3132 } 3133 3134 /* changes into another band are not supported */ 3135 if (sdata->u.ibss.chandef.chan->band != 3136 params->chandef.chan->band) 3137 return -EINVAL; 3138 3139 err = ieee80211_ibss_csa_beacon(sdata, params); 3140 if (err < 0) 3141 return err; 3142 break; 3143 #ifdef CONFIG_MAC80211_MESH 3144 case NL80211_IFTYPE_MESH_POINT: 3145 ifmsh = &sdata->u.mesh; 3146 3147 if (!ifmsh->mesh_id) 3148 return -EINVAL; 3149 3150 if (params->chandef.width != sdata->vif.bss_conf.chandef.width) 3151 return -EINVAL; 3152 3153 /* changes into another band are not supported */ 3154 if (sdata->vif.bss_conf.chandef.chan->band != 3155 params->chandef.chan->band) 3156 return -EINVAL; 3157 3158 ifmsh->chsw_init = true; 3159 if (!ifmsh->pre_value) 3160 ifmsh->pre_value = 1; 3161 else 3162 ifmsh->pre_value++; 3163 3164 err = ieee80211_mesh_csa_beacon(sdata, params, true); 3165 if (err < 0) { 3166 ifmsh->chsw_init = false; 3167 return err; 3168 } 3169 break; 3170 #endif 3171 default: 3172 return -EOPNOTSUPP; 3173 } 3174 3175 sdata->csa_radar_required = params->radar_required; 3176 3177 if (params->block_tx) 3178 ieee80211_stop_queues_by_reason(&local->hw, 3179 IEEE80211_MAX_QUEUE_MAP, 3180 IEEE80211_QUEUE_STOP_REASON_CSA); 3181 3182 sdata->csa_chandef = params->chandef; 3183 sdata->vif.csa_active = true; 3184 3185 ieee80211_bss_info_change_notify(sdata, err); 3186 drv_channel_switch_beacon(sdata, ¶ms->chandef); 3187 3188 return 0; 3189 } 3190 3191 static int ieee80211_mgmt_tx(struct wiphy *wiphy, struct wireless_dev *wdev, 3192 struct cfg80211_mgmt_tx_params *params, 3193 u64 *cookie) 3194 { 3195 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 3196 struct ieee80211_local *local = sdata->local; 3197 struct sk_buff *skb; 3198 struct sta_info *sta; 3199 const struct ieee80211_mgmt *mgmt = (void *)params->buf; 3200 bool need_offchan = false; 3201 u32 flags; 3202 int ret; 3203 3204 if (params->dont_wait_for_ack) 3205 flags = IEEE80211_TX_CTL_NO_ACK; 3206 else 3207 flags = IEEE80211_TX_INTFL_NL80211_FRAME_TX | 3208 IEEE80211_TX_CTL_REQ_TX_STATUS; 3209 3210 if (params->no_cck) 3211 flags |= IEEE80211_TX_CTL_NO_CCK_RATE; 3212 3213 switch (sdata->vif.type) { 3214 case NL80211_IFTYPE_ADHOC: 3215 if (!sdata->vif.bss_conf.ibss_joined) 3216 need_offchan = true; 3217 /* fall through */ 3218 #ifdef CONFIG_MAC80211_MESH 3219 case NL80211_IFTYPE_MESH_POINT: 3220 if (ieee80211_vif_is_mesh(&sdata->vif) && 3221 !sdata->u.mesh.mesh_id_len) 3222 need_offchan = true; 3223 /* fall through */ 3224 #endif 3225 case NL80211_IFTYPE_AP: 3226 case NL80211_IFTYPE_AP_VLAN: 3227 case NL80211_IFTYPE_P2P_GO: 3228 if (sdata->vif.type != NL80211_IFTYPE_ADHOC && 3229 !ieee80211_vif_is_mesh(&sdata->vif) && 3230 !rcu_access_pointer(sdata->bss->beacon)) 3231 need_offchan = true; 3232 if (!ieee80211_is_action(mgmt->frame_control) || 3233 mgmt->u.action.category == WLAN_CATEGORY_PUBLIC || 3234 mgmt->u.action.category == WLAN_CATEGORY_SELF_PROTECTED || 3235 mgmt->u.action.category == WLAN_CATEGORY_SPECTRUM_MGMT) 3236 break; 3237 rcu_read_lock(); 3238 sta = sta_info_get(sdata, mgmt->da); 3239 rcu_read_unlock(); 3240 if (!sta) 3241 return -ENOLINK; 3242 break; 3243 case NL80211_IFTYPE_STATION: 3244 case NL80211_IFTYPE_P2P_CLIENT: 3245 if (!sdata->u.mgd.associated) 3246 need_offchan = true; 3247 break; 3248 case NL80211_IFTYPE_P2P_DEVICE: 3249 need_offchan = true; 3250 break; 3251 default: 3252 return -EOPNOTSUPP; 3253 } 3254 3255 /* configurations requiring offchan cannot work if no channel has been 3256 * specified 3257 */ 3258 if (need_offchan && !params->chan) 3259 return -EINVAL; 3260 3261 mutex_lock(&local->mtx); 3262 3263 /* Check if the operating channel is the requested channel */ 3264 if (!need_offchan) { 3265 struct ieee80211_chanctx_conf *chanctx_conf; 3266 3267 rcu_read_lock(); 3268 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); 3269 3270 if (chanctx_conf) { 3271 need_offchan = params->chan && 3272 (params->chan != 3273 chanctx_conf->def.chan); 3274 } else if (!params->chan) { 3275 ret = -EINVAL; 3276 rcu_read_unlock(); 3277 goto out_unlock; 3278 } else { 3279 need_offchan = true; 3280 } 3281 rcu_read_unlock(); 3282 } 3283 3284 if (need_offchan && !params->offchan) { 3285 ret = -EBUSY; 3286 goto out_unlock; 3287 } 3288 3289 skb = dev_alloc_skb(local->hw.extra_tx_headroom + params->len); 3290 if (!skb) { 3291 ret = -ENOMEM; 3292 goto out_unlock; 3293 } 3294 skb_reserve(skb, local->hw.extra_tx_headroom); 3295 3296 memcpy(skb_put(skb, params->len), params->buf, params->len); 3297 3298 IEEE80211_SKB_CB(skb)->flags = flags; 3299 3300 skb->dev = sdata->dev; 3301 3302 if (!need_offchan) { 3303 *cookie = (unsigned long) skb; 3304 ieee80211_tx_skb(sdata, skb); 3305 ret = 0; 3306 goto out_unlock; 3307 } 3308 3309 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_TX_OFFCHAN | 3310 IEEE80211_TX_INTFL_OFFCHAN_TX_OK; 3311 if (local->hw.flags & IEEE80211_HW_QUEUE_CONTROL) 3312 IEEE80211_SKB_CB(skb)->hw_queue = 3313 local->hw.offchannel_tx_hw_queue; 3314 3315 /* This will handle all kinds of coalescing and immediate TX */ 3316 ret = ieee80211_start_roc_work(local, sdata, params->chan, 3317 params->wait, cookie, skb, 3318 IEEE80211_ROC_TYPE_MGMT_TX); 3319 if (ret) 3320 kfree_skb(skb); 3321 out_unlock: 3322 mutex_unlock(&local->mtx); 3323 return ret; 3324 } 3325 3326 static int ieee80211_mgmt_tx_cancel_wait(struct wiphy *wiphy, 3327 struct wireless_dev *wdev, 3328 u64 cookie) 3329 { 3330 struct ieee80211_local *local = wiphy_priv(wiphy); 3331 3332 return ieee80211_cancel_roc(local, cookie, true); 3333 } 3334 3335 static void ieee80211_mgmt_frame_register(struct wiphy *wiphy, 3336 struct wireless_dev *wdev, 3337 u16 frame_type, bool reg) 3338 { 3339 struct ieee80211_local *local = wiphy_priv(wiphy); 3340 3341 switch (frame_type) { 3342 case IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_PROBE_REQ: 3343 if (reg) 3344 local->probe_req_reg++; 3345 else 3346 local->probe_req_reg--; 3347 3348 if (!local->open_count) 3349 break; 3350 3351 ieee80211_queue_work(&local->hw, &local->reconfig_filter); 3352 break; 3353 default: 3354 break; 3355 } 3356 } 3357 3358 static int ieee80211_set_antenna(struct wiphy *wiphy, u32 tx_ant, u32 rx_ant) 3359 { 3360 struct ieee80211_local *local = wiphy_priv(wiphy); 3361 3362 if (local->started) 3363 return -EOPNOTSUPP; 3364 3365 return drv_set_antenna(local, tx_ant, rx_ant); 3366 } 3367 3368 static int ieee80211_get_antenna(struct wiphy *wiphy, u32 *tx_ant, u32 *rx_ant) 3369 { 3370 struct ieee80211_local *local = wiphy_priv(wiphy); 3371 3372 return drv_get_antenna(local, tx_ant, rx_ant); 3373 } 3374 3375 static int ieee80211_set_ringparam(struct wiphy *wiphy, u32 tx, u32 rx) 3376 { 3377 struct ieee80211_local *local = wiphy_priv(wiphy); 3378 3379 return drv_set_ringparam(local, tx, rx); 3380 } 3381 3382 static void ieee80211_get_ringparam(struct wiphy *wiphy, 3383 u32 *tx, u32 *tx_max, u32 *rx, u32 *rx_max) 3384 { 3385 struct ieee80211_local *local = wiphy_priv(wiphy); 3386 3387 drv_get_ringparam(local, tx, tx_max, rx, rx_max); 3388 } 3389 3390 static int ieee80211_set_rekey_data(struct wiphy *wiphy, 3391 struct net_device *dev, 3392 struct cfg80211_gtk_rekey_data *data) 3393 { 3394 struct ieee80211_local *local = wiphy_priv(wiphy); 3395 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 3396 3397 if (!local->ops->set_rekey_data) 3398 return -EOPNOTSUPP; 3399 3400 drv_set_rekey_data(local, sdata, data); 3401 3402 return 0; 3403 } 3404 3405 static void ieee80211_tdls_add_ext_capab(struct sk_buff *skb) 3406 { 3407 u8 *pos = (void *)skb_put(skb, 7); 3408 3409 *pos++ = WLAN_EID_EXT_CAPABILITY; 3410 *pos++ = 5; /* len */ 3411 *pos++ = 0x0; 3412 *pos++ = 0x0; 3413 *pos++ = 0x0; 3414 *pos++ = 0x0; 3415 *pos++ = WLAN_EXT_CAPA5_TDLS_ENABLED; 3416 } 3417 3418 static u16 ieee80211_get_tdls_sta_capab(struct ieee80211_sub_if_data *sdata) 3419 { 3420 struct ieee80211_local *local = sdata->local; 3421 u16 capab; 3422 3423 capab = 0; 3424 if (ieee80211_get_sdata_band(sdata) != IEEE80211_BAND_2GHZ) 3425 return capab; 3426 3427 if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_SLOT_INCAPABLE)) 3428 capab |= WLAN_CAPABILITY_SHORT_SLOT_TIME; 3429 if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_PREAMBLE_INCAPABLE)) 3430 capab |= WLAN_CAPABILITY_SHORT_PREAMBLE; 3431 3432 return capab; 3433 } 3434 3435 static void ieee80211_tdls_add_link_ie(struct sk_buff *skb, u8 *src_addr, 3436 u8 *peer, u8 *bssid) 3437 { 3438 struct ieee80211_tdls_lnkie *lnkid; 3439 3440 lnkid = (void *)skb_put(skb, sizeof(struct ieee80211_tdls_lnkie)); 3441 3442 lnkid->ie_type = WLAN_EID_LINK_ID; 3443 lnkid->ie_len = sizeof(struct ieee80211_tdls_lnkie) - 2; 3444 3445 memcpy(lnkid->bssid, bssid, ETH_ALEN); 3446 memcpy(lnkid->init_sta, src_addr, ETH_ALEN); 3447 memcpy(lnkid->resp_sta, peer, ETH_ALEN); 3448 } 3449 3450 static int 3451 ieee80211_prep_tdls_encap_data(struct wiphy *wiphy, struct net_device *dev, 3452 u8 *peer, u8 action_code, u8 dialog_token, 3453 u16 status_code, struct sk_buff *skb) 3454 { 3455 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 3456 enum ieee80211_band band = ieee80211_get_sdata_band(sdata); 3457 struct ieee80211_tdls_data *tf; 3458 3459 tf = (void *)skb_put(skb, offsetof(struct ieee80211_tdls_data, u)); 3460 3461 memcpy(tf->da, peer, ETH_ALEN); 3462 memcpy(tf->sa, sdata->vif.addr, ETH_ALEN); 3463 tf->ether_type = cpu_to_be16(ETH_P_TDLS); 3464 tf->payload_type = WLAN_TDLS_SNAP_RFTYPE; 3465 3466 switch (action_code) { 3467 case WLAN_TDLS_SETUP_REQUEST: 3468 tf->category = WLAN_CATEGORY_TDLS; 3469 tf->action_code = WLAN_TDLS_SETUP_REQUEST; 3470 3471 skb_put(skb, sizeof(tf->u.setup_req)); 3472 tf->u.setup_req.dialog_token = dialog_token; 3473 tf->u.setup_req.capability = 3474 cpu_to_le16(ieee80211_get_tdls_sta_capab(sdata)); 3475 3476 ieee80211_add_srates_ie(sdata, skb, false, band); 3477 ieee80211_add_ext_srates_ie(sdata, skb, false, band); 3478 ieee80211_tdls_add_ext_capab(skb); 3479 break; 3480 case WLAN_TDLS_SETUP_RESPONSE: 3481 tf->category = WLAN_CATEGORY_TDLS; 3482 tf->action_code = WLAN_TDLS_SETUP_RESPONSE; 3483 3484 skb_put(skb, sizeof(tf->u.setup_resp)); 3485 tf->u.setup_resp.status_code = cpu_to_le16(status_code); 3486 tf->u.setup_resp.dialog_token = dialog_token; 3487 tf->u.setup_resp.capability = 3488 cpu_to_le16(ieee80211_get_tdls_sta_capab(sdata)); 3489 3490 ieee80211_add_srates_ie(sdata, skb, false, band); 3491 ieee80211_add_ext_srates_ie(sdata, skb, false, band); 3492 ieee80211_tdls_add_ext_capab(skb); 3493 break; 3494 case WLAN_TDLS_SETUP_CONFIRM: 3495 tf->category = WLAN_CATEGORY_TDLS; 3496 tf->action_code = WLAN_TDLS_SETUP_CONFIRM; 3497 3498 skb_put(skb, sizeof(tf->u.setup_cfm)); 3499 tf->u.setup_cfm.status_code = cpu_to_le16(status_code); 3500 tf->u.setup_cfm.dialog_token = dialog_token; 3501 break; 3502 case WLAN_TDLS_TEARDOWN: 3503 tf->category = WLAN_CATEGORY_TDLS; 3504 tf->action_code = WLAN_TDLS_TEARDOWN; 3505 3506 skb_put(skb, sizeof(tf->u.teardown)); 3507 tf->u.teardown.reason_code = cpu_to_le16(status_code); 3508 break; 3509 case WLAN_TDLS_DISCOVERY_REQUEST: 3510 tf->category = WLAN_CATEGORY_TDLS; 3511 tf->action_code = WLAN_TDLS_DISCOVERY_REQUEST; 3512 3513 skb_put(skb, sizeof(tf->u.discover_req)); 3514 tf->u.discover_req.dialog_token = dialog_token; 3515 break; 3516 default: 3517 return -EINVAL; 3518 } 3519 3520 return 0; 3521 } 3522 3523 static int 3524 ieee80211_prep_tdls_direct(struct wiphy *wiphy, struct net_device *dev, 3525 u8 *peer, u8 action_code, u8 dialog_token, 3526 u16 status_code, struct sk_buff *skb) 3527 { 3528 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 3529 enum ieee80211_band band = ieee80211_get_sdata_band(sdata); 3530 struct ieee80211_mgmt *mgmt; 3531 3532 mgmt = (void *)skb_put(skb, 24); 3533 memset(mgmt, 0, 24); 3534 memcpy(mgmt->da, peer, ETH_ALEN); 3535 memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN); 3536 memcpy(mgmt->bssid, sdata->u.mgd.bssid, ETH_ALEN); 3537 3538 mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | 3539 IEEE80211_STYPE_ACTION); 3540 3541 switch (action_code) { 3542 case WLAN_PUB_ACTION_TDLS_DISCOVER_RES: 3543 skb_put(skb, 1 + sizeof(mgmt->u.action.u.tdls_discover_resp)); 3544 mgmt->u.action.category = WLAN_CATEGORY_PUBLIC; 3545 mgmt->u.action.u.tdls_discover_resp.action_code = 3546 WLAN_PUB_ACTION_TDLS_DISCOVER_RES; 3547 mgmt->u.action.u.tdls_discover_resp.dialog_token = 3548 dialog_token; 3549 mgmt->u.action.u.tdls_discover_resp.capability = 3550 cpu_to_le16(ieee80211_get_tdls_sta_capab(sdata)); 3551 3552 ieee80211_add_srates_ie(sdata, skb, false, band); 3553 ieee80211_add_ext_srates_ie(sdata, skb, false, band); 3554 ieee80211_tdls_add_ext_capab(skb); 3555 break; 3556 default: 3557 return -EINVAL; 3558 } 3559 3560 return 0; 3561 } 3562 3563 static int ieee80211_tdls_mgmt(struct wiphy *wiphy, struct net_device *dev, 3564 u8 *peer, u8 action_code, u8 dialog_token, 3565 u16 status_code, const u8 *extra_ies, 3566 size_t extra_ies_len) 3567 { 3568 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 3569 struct ieee80211_local *local = sdata->local; 3570 struct sk_buff *skb = NULL; 3571 bool send_direct; 3572 int ret; 3573 3574 if (!(wiphy->flags & WIPHY_FLAG_SUPPORTS_TDLS)) 3575 return -ENOTSUPP; 3576 3577 /* make sure we are in managed mode, and associated */ 3578 if (sdata->vif.type != NL80211_IFTYPE_STATION || 3579 !sdata->u.mgd.associated) 3580 return -EINVAL; 3581 3582 tdls_dbg(sdata, "TDLS mgmt action %d peer %pM\n", 3583 action_code, peer); 3584 3585 skb = dev_alloc_skb(local->hw.extra_tx_headroom + 3586 max(sizeof(struct ieee80211_mgmt), 3587 sizeof(struct ieee80211_tdls_data)) + 3588 50 + /* supported rates */ 3589 7 + /* ext capab */ 3590 extra_ies_len + 3591 sizeof(struct ieee80211_tdls_lnkie)); 3592 if (!skb) 3593 return -ENOMEM; 3594 3595 skb_reserve(skb, local->hw.extra_tx_headroom); 3596 3597 switch (action_code) { 3598 case WLAN_TDLS_SETUP_REQUEST: 3599 case WLAN_TDLS_SETUP_RESPONSE: 3600 case WLAN_TDLS_SETUP_CONFIRM: 3601 case WLAN_TDLS_TEARDOWN: 3602 case WLAN_TDLS_DISCOVERY_REQUEST: 3603 ret = ieee80211_prep_tdls_encap_data(wiphy, dev, peer, 3604 action_code, dialog_token, 3605 status_code, skb); 3606 send_direct = false; 3607 break; 3608 case WLAN_PUB_ACTION_TDLS_DISCOVER_RES: 3609 ret = ieee80211_prep_tdls_direct(wiphy, dev, peer, action_code, 3610 dialog_token, status_code, 3611 skb); 3612 send_direct = true; 3613 break; 3614 default: 3615 ret = -ENOTSUPP; 3616 break; 3617 } 3618 3619 if (ret < 0) 3620 goto fail; 3621 3622 if (extra_ies_len) 3623 memcpy(skb_put(skb, extra_ies_len), extra_ies, extra_ies_len); 3624 3625 /* the TDLS link IE is always added last */ 3626 switch (action_code) { 3627 case WLAN_TDLS_SETUP_REQUEST: 3628 case WLAN_TDLS_SETUP_CONFIRM: 3629 case WLAN_TDLS_TEARDOWN: 3630 case WLAN_TDLS_DISCOVERY_REQUEST: 3631 /* we are the initiator */ 3632 ieee80211_tdls_add_link_ie(skb, sdata->vif.addr, peer, 3633 sdata->u.mgd.bssid); 3634 break; 3635 case WLAN_TDLS_SETUP_RESPONSE: 3636 case WLAN_PUB_ACTION_TDLS_DISCOVER_RES: 3637 /* we are the responder */ 3638 ieee80211_tdls_add_link_ie(skb, peer, sdata->vif.addr, 3639 sdata->u.mgd.bssid); 3640 break; 3641 default: 3642 ret = -ENOTSUPP; 3643 goto fail; 3644 } 3645 3646 if (send_direct) { 3647 ieee80211_tx_skb(sdata, skb); 3648 return 0; 3649 } 3650 3651 /* 3652 * According to 802.11z: Setup req/resp are sent in AC_BK, otherwise 3653 * we should default to AC_VI. 3654 */ 3655 switch (action_code) { 3656 case WLAN_TDLS_SETUP_REQUEST: 3657 case WLAN_TDLS_SETUP_RESPONSE: 3658 skb_set_queue_mapping(skb, IEEE80211_AC_BK); 3659 skb->priority = 2; 3660 break; 3661 default: 3662 skb_set_queue_mapping(skb, IEEE80211_AC_VI); 3663 skb->priority = 5; 3664 break; 3665 } 3666 3667 /* disable bottom halves when entering the Tx path */ 3668 local_bh_disable(); 3669 ret = ieee80211_subif_start_xmit(skb, dev); 3670 local_bh_enable(); 3671 3672 return ret; 3673 3674 fail: 3675 dev_kfree_skb(skb); 3676 return ret; 3677 } 3678 3679 static int ieee80211_tdls_oper(struct wiphy *wiphy, struct net_device *dev, 3680 u8 *peer, enum nl80211_tdls_operation oper) 3681 { 3682 struct sta_info *sta; 3683 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 3684 3685 if (!(wiphy->flags & WIPHY_FLAG_SUPPORTS_TDLS)) 3686 return -ENOTSUPP; 3687 3688 if (sdata->vif.type != NL80211_IFTYPE_STATION) 3689 return -EINVAL; 3690 3691 tdls_dbg(sdata, "TDLS oper %d peer %pM\n", oper, peer); 3692 3693 switch (oper) { 3694 case NL80211_TDLS_ENABLE_LINK: 3695 rcu_read_lock(); 3696 sta = sta_info_get(sdata, peer); 3697 if (!sta) { 3698 rcu_read_unlock(); 3699 return -ENOLINK; 3700 } 3701 3702 set_sta_flag(sta, WLAN_STA_TDLS_PEER_AUTH); 3703 rcu_read_unlock(); 3704 break; 3705 case NL80211_TDLS_DISABLE_LINK: 3706 return sta_info_destroy_addr(sdata, peer); 3707 case NL80211_TDLS_TEARDOWN: 3708 case NL80211_TDLS_SETUP: 3709 case NL80211_TDLS_DISCOVERY_REQ: 3710 /* We don't support in-driver setup/teardown/discovery */ 3711 return -ENOTSUPP; 3712 default: 3713 return -ENOTSUPP; 3714 } 3715 3716 return 0; 3717 } 3718 3719 static int ieee80211_probe_client(struct wiphy *wiphy, struct net_device *dev, 3720 const u8 *peer, u64 *cookie) 3721 { 3722 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 3723 struct ieee80211_local *local = sdata->local; 3724 struct ieee80211_qos_hdr *nullfunc; 3725 struct sk_buff *skb; 3726 int size = sizeof(*nullfunc); 3727 __le16 fc; 3728 bool qos; 3729 struct ieee80211_tx_info *info; 3730 struct sta_info *sta; 3731 struct ieee80211_chanctx_conf *chanctx_conf; 3732 enum ieee80211_band band; 3733 3734 rcu_read_lock(); 3735 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); 3736 if (WARN_ON(!chanctx_conf)) { 3737 rcu_read_unlock(); 3738 return -EINVAL; 3739 } 3740 band = chanctx_conf->def.chan->band; 3741 sta = sta_info_get_bss(sdata, peer); 3742 if (sta) { 3743 qos = test_sta_flag(sta, WLAN_STA_WME); 3744 } else { 3745 rcu_read_unlock(); 3746 return -ENOLINK; 3747 } 3748 3749 if (qos) { 3750 fc = cpu_to_le16(IEEE80211_FTYPE_DATA | 3751 IEEE80211_STYPE_QOS_NULLFUNC | 3752 IEEE80211_FCTL_FROMDS); 3753 } else { 3754 size -= 2; 3755 fc = cpu_to_le16(IEEE80211_FTYPE_DATA | 3756 IEEE80211_STYPE_NULLFUNC | 3757 IEEE80211_FCTL_FROMDS); 3758 } 3759 3760 skb = dev_alloc_skb(local->hw.extra_tx_headroom + size); 3761 if (!skb) { 3762 rcu_read_unlock(); 3763 return -ENOMEM; 3764 } 3765 3766 skb->dev = dev; 3767 3768 skb_reserve(skb, local->hw.extra_tx_headroom); 3769 3770 nullfunc = (void *) skb_put(skb, size); 3771 nullfunc->frame_control = fc; 3772 nullfunc->duration_id = 0; 3773 memcpy(nullfunc->addr1, sta->sta.addr, ETH_ALEN); 3774 memcpy(nullfunc->addr2, sdata->vif.addr, ETH_ALEN); 3775 memcpy(nullfunc->addr3, sdata->vif.addr, ETH_ALEN); 3776 nullfunc->seq_ctrl = 0; 3777 3778 info = IEEE80211_SKB_CB(skb); 3779 3780 info->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS | 3781 IEEE80211_TX_INTFL_NL80211_FRAME_TX; 3782 3783 skb_set_queue_mapping(skb, IEEE80211_AC_VO); 3784 skb->priority = 7; 3785 if (qos) 3786 nullfunc->qos_ctrl = cpu_to_le16(7); 3787 3788 local_bh_disable(); 3789 ieee80211_xmit(sdata, skb, band); 3790 local_bh_enable(); 3791 rcu_read_unlock(); 3792 3793 *cookie = (unsigned long) skb; 3794 return 0; 3795 } 3796 3797 static int ieee80211_cfg_get_channel(struct wiphy *wiphy, 3798 struct wireless_dev *wdev, 3799 struct cfg80211_chan_def *chandef) 3800 { 3801 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 3802 struct ieee80211_local *local = wiphy_priv(wiphy); 3803 struct ieee80211_chanctx_conf *chanctx_conf; 3804 int ret = -ENODATA; 3805 3806 rcu_read_lock(); 3807 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); 3808 if (chanctx_conf) { 3809 *chandef = chanctx_conf->def; 3810 ret = 0; 3811 } else if (local->open_count > 0 && 3812 local->open_count == local->monitors && 3813 sdata->vif.type == NL80211_IFTYPE_MONITOR) { 3814 if (local->use_chanctx) 3815 *chandef = local->monitor_chandef; 3816 else 3817 *chandef = local->_oper_chandef; 3818 ret = 0; 3819 } 3820 rcu_read_unlock(); 3821 3822 return ret; 3823 } 3824 3825 #ifdef CONFIG_PM 3826 static void ieee80211_set_wakeup(struct wiphy *wiphy, bool enabled) 3827 { 3828 drv_set_wakeup(wiphy_priv(wiphy), enabled); 3829 } 3830 #endif 3831 3832 struct cfg80211_ops mac80211_config_ops = { 3833 .add_virtual_intf = ieee80211_add_iface, 3834 .del_virtual_intf = ieee80211_del_iface, 3835 .change_virtual_intf = ieee80211_change_iface, 3836 .start_p2p_device = ieee80211_start_p2p_device, 3837 .stop_p2p_device = ieee80211_stop_p2p_device, 3838 .add_key = ieee80211_add_key, 3839 .del_key = ieee80211_del_key, 3840 .get_key = ieee80211_get_key, 3841 .set_default_key = ieee80211_config_default_key, 3842 .set_default_mgmt_key = ieee80211_config_default_mgmt_key, 3843 .start_ap = ieee80211_start_ap, 3844 .change_beacon = ieee80211_change_beacon, 3845 .stop_ap = ieee80211_stop_ap, 3846 .add_station = ieee80211_add_station, 3847 .del_station = ieee80211_del_station, 3848 .change_station = ieee80211_change_station, 3849 .get_station = ieee80211_get_station, 3850 .dump_station = ieee80211_dump_station, 3851 .dump_survey = ieee80211_dump_survey, 3852 #ifdef CONFIG_MAC80211_MESH 3853 .add_mpath = ieee80211_add_mpath, 3854 .del_mpath = ieee80211_del_mpath, 3855 .change_mpath = ieee80211_change_mpath, 3856 .get_mpath = ieee80211_get_mpath, 3857 .dump_mpath = ieee80211_dump_mpath, 3858 .update_mesh_config = ieee80211_update_mesh_config, 3859 .get_mesh_config = ieee80211_get_mesh_config, 3860 .join_mesh = ieee80211_join_mesh, 3861 .leave_mesh = ieee80211_leave_mesh, 3862 #endif 3863 .change_bss = ieee80211_change_bss, 3864 .set_txq_params = ieee80211_set_txq_params, 3865 .set_monitor_channel = ieee80211_set_monitor_channel, 3866 .suspend = ieee80211_suspend, 3867 .resume = ieee80211_resume, 3868 .scan = ieee80211_scan, 3869 .sched_scan_start = ieee80211_sched_scan_start, 3870 .sched_scan_stop = ieee80211_sched_scan_stop, 3871 .auth = ieee80211_auth, 3872 .assoc = ieee80211_assoc, 3873 .deauth = ieee80211_deauth, 3874 .disassoc = ieee80211_disassoc, 3875 .join_ibss = ieee80211_join_ibss, 3876 .leave_ibss = ieee80211_leave_ibss, 3877 .set_mcast_rate = ieee80211_set_mcast_rate, 3878 .set_wiphy_params = ieee80211_set_wiphy_params, 3879 .set_tx_power = ieee80211_set_tx_power, 3880 .get_tx_power = ieee80211_get_tx_power, 3881 .set_wds_peer = ieee80211_set_wds_peer, 3882 .rfkill_poll = ieee80211_rfkill_poll, 3883 CFG80211_TESTMODE_CMD(ieee80211_testmode_cmd) 3884 CFG80211_TESTMODE_DUMP(ieee80211_testmode_dump) 3885 .set_power_mgmt = ieee80211_set_power_mgmt, 3886 .set_bitrate_mask = ieee80211_set_bitrate_mask, 3887 .remain_on_channel = ieee80211_remain_on_channel, 3888 .cancel_remain_on_channel = ieee80211_cancel_remain_on_channel, 3889 .mgmt_tx = ieee80211_mgmt_tx, 3890 .mgmt_tx_cancel_wait = ieee80211_mgmt_tx_cancel_wait, 3891 .set_cqm_rssi_config = ieee80211_set_cqm_rssi_config, 3892 .mgmt_frame_register = ieee80211_mgmt_frame_register, 3893 .set_antenna = ieee80211_set_antenna, 3894 .get_antenna = ieee80211_get_antenna, 3895 .set_ringparam = ieee80211_set_ringparam, 3896 .get_ringparam = ieee80211_get_ringparam, 3897 .set_rekey_data = ieee80211_set_rekey_data, 3898 .tdls_oper = ieee80211_tdls_oper, 3899 .tdls_mgmt = ieee80211_tdls_mgmt, 3900 .probe_client = ieee80211_probe_client, 3901 .set_noack_map = ieee80211_set_noack_map, 3902 #ifdef CONFIG_PM 3903 .set_wakeup = ieee80211_set_wakeup, 3904 #endif 3905 .get_et_sset_count = ieee80211_get_et_sset_count, 3906 .get_et_stats = ieee80211_get_et_stats, 3907 .get_et_strings = ieee80211_get_et_strings, 3908 .get_channel = ieee80211_cfg_get_channel, 3909 .start_radar_detection = ieee80211_start_radar_detection, 3910 .channel_switch = ieee80211_channel_switch, 3911 }; 3912