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 && key_idx < NUM_DEFAULT_KEYS) 305 key = rcu_dereference(sta->ptk[key_idx]); 306 else if (!pairwise && 307 key_idx < NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS) 308 key = rcu_dereference(sta->gtk[key_idx]); 309 } else 310 key = rcu_dereference(sdata->keys[key_idx]); 311 312 if (!key) 313 goto out; 314 315 memset(¶ms, 0, sizeof(params)); 316 317 params.cipher = key->conf.cipher; 318 319 switch (key->conf.cipher) { 320 case WLAN_CIPHER_SUITE_TKIP: 321 iv32 = key->u.tkip.tx.iv32; 322 iv16 = key->u.tkip.tx.iv16; 323 324 if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE) 325 drv_get_tkip_seq(sdata->local, 326 key->conf.hw_key_idx, 327 &iv32, &iv16); 328 329 seq[0] = iv16 & 0xff; 330 seq[1] = (iv16 >> 8) & 0xff; 331 seq[2] = iv32 & 0xff; 332 seq[3] = (iv32 >> 8) & 0xff; 333 seq[4] = (iv32 >> 16) & 0xff; 334 seq[5] = (iv32 >> 24) & 0xff; 335 params.seq = seq; 336 params.seq_len = 6; 337 break; 338 case WLAN_CIPHER_SUITE_CCMP: 339 pn64 = atomic64_read(&key->u.ccmp.tx_pn); 340 seq[0] = pn64; 341 seq[1] = pn64 >> 8; 342 seq[2] = pn64 >> 16; 343 seq[3] = pn64 >> 24; 344 seq[4] = pn64 >> 32; 345 seq[5] = pn64 >> 40; 346 params.seq = seq; 347 params.seq_len = 6; 348 break; 349 case WLAN_CIPHER_SUITE_AES_CMAC: 350 pn64 = atomic64_read(&key->u.aes_cmac.tx_pn); 351 seq[0] = pn64; 352 seq[1] = pn64 >> 8; 353 seq[2] = pn64 >> 16; 354 seq[3] = pn64 >> 24; 355 seq[4] = pn64 >> 32; 356 seq[5] = pn64 >> 40; 357 params.seq = seq; 358 params.seq_len = 6; 359 break; 360 } 361 362 params.key = key->conf.key; 363 params.key_len = key->conf.keylen; 364 365 callback(cookie, ¶ms); 366 err = 0; 367 368 out: 369 rcu_read_unlock(); 370 return err; 371 } 372 373 static int ieee80211_config_default_key(struct wiphy *wiphy, 374 struct net_device *dev, 375 u8 key_idx, bool uni, 376 bool multi) 377 { 378 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 379 380 ieee80211_set_default_key(sdata, key_idx, uni, multi); 381 382 return 0; 383 } 384 385 static int ieee80211_config_default_mgmt_key(struct wiphy *wiphy, 386 struct net_device *dev, 387 u8 key_idx) 388 { 389 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 390 391 ieee80211_set_default_mgmt_key(sdata, key_idx); 392 393 return 0; 394 } 395 396 void sta_set_rate_info_tx(struct sta_info *sta, 397 const struct ieee80211_tx_rate *rate, 398 struct rate_info *rinfo) 399 { 400 rinfo->flags = 0; 401 if (rate->flags & IEEE80211_TX_RC_MCS) { 402 rinfo->flags |= RATE_INFO_FLAGS_MCS; 403 rinfo->mcs = rate->idx; 404 } else if (rate->flags & IEEE80211_TX_RC_VHT_MCS) { 405 rinfo->flags |= RATE_INFO_FLAGS_VHT_MCS; 406 rinfo->mcs = ieee80211_rate_get_vht_mcs(rate); 407 rinfo->nss = ieee80211_rate_get_vht_nss(rate); 408 } else { 409 struct ieee80211_supported_band *sband; 410 int shift = ieee80211_vif_get_shift(&sta->sdata->vif); 411 u16 brate; 412 413 sband = sta->local->hw.wiphy->bands[ 414 ieee80211_get_sdata_band(sta->sdata)]; 415 brate = sband->bitrates[rate->idx].bitrate; 416 rinfo->legacy = DIV_ROUND_UP(brate, 1 << shift); 417 } 418 if (rate->flags & IEEE80211_TX_RC_40_MHZ_WIDTH) 419 rinfo->flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH; 420 if (rate->flags & IEEE80211_TX_RC_80_MHZ_WIDTH) 421 rinfo->flags |= RATE_INFO_FLAGS_80_MHZ_WIDTH; 422 if (rate->flags & IEEE80211_TX_RC_160_MHZ_WIDTH) 423 rinfo->flags |= RATE_INFO_FLAGS_160_MHZ_WIDTH; 424 if (rate->flags & IEEE80211_TX_RC_SHORT_GI) 425 rinfo->flags |= RATE_INFO_FLAGS_SHORT_GI; 426 } 427 428 void sta_set_rate_info_rx(struct sta_info *sta, struct rate_info *rinfo) 429 { 430 rinfo->flags = 0; 431 432 if (sta->last_rx_rate_flag & RX_FLAG_HT) { 433 rinfo->flags |= RATE_INFO_FLAGS_MCS; 434 rinfo->mcs = sta->last_rx_rate_idx; 435 } else if (sta->last_rx_rate_flag & RX_FLAG_VHT) { 436 rinfo->flags |= RATE_INFO_FLAGS_VHT_MCS; 437 rinfo->nss = sta->last_rx_rate_vht_nss; 438 rinfo->mcs = sta->last_rx_rate_idx; 439 } else { 440 struct ieee80211_supported_band *sband; 441 int shift = ieee80211_vif_get_shift(&sta->sdata->vif); 442 u16 brate; 443 444 sband = sta->local->hw.wiphy->bands[ 445 ieee80211_get_sdata_band(sta->sdata)]; 446 brate = sband->bitrates[sta->last_rx_rate_idx].bitrate; 447 rinfo->legacy = DIV_ROUND_UP(brate, 1 << shift); 448 } 449 450 if (sta->last_rx_rate_flag & RX_FLAG_40MHZ) 451 rinfo->flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH; 452 if (sta->last_rx_rate_flag & RX_FLAG_SHORT_GI) 453 rinfo->flags |= RATE_INFO_FLAGS_SHORT_GI; 454 if (sta->last_rx_rate_flag & RX_FLAG_80MHZ) 455 rinfo->flags |= RATE_INFO_FLAGS_80_MHZ_WIDTH; 456 if (sta->last_rx_rate_flag & RX_FLAG_80P80MHZ) 457 rinfo->flags |= RATE_INFO_FLAGS_80P80_MHZ_WIDTH; 458 if (sta->last_rx_rate_flag & RX_FLAG_160MHZ) 459 rinfo->flags |= RATE_INFO_FLAGS_160_MHZ_WIDTH; 460 } 461 462 static void sta_set_sinfo(struct sta_info *sta, struct station_info *sinfo) 463 { 464 struct ieee80211_sub_if_data *sdata = sta->sdata; 465 struct ieee80211_local *local = sdata->local; 466 struct timespec uptime; 467 u64 packets = 0; 468 int i, ac; 469 470 sinfo->generation = sdata->local->sta_generation; 471 472 sinfo->filled = STATION_INFO_INACTIVE_TIME | 473 STATION_INFO_RX_BYTES64 | 474 STATION_INFO_TX_BYTES64 | 475 STATION_INFO_RX_PACKETS | 476 STATION_INFO_TX_PACKETS | 477 STATION_INFO_TX_RETRIES | 478 STATION_INFO_TX_FAILED | 479 STATION_INFO_TX_BITRATE | 480 STATION_INFO_RX_BITRATE | 481 STATION_INFO_RX_DROP_MISC | 482 STATION_INFO_BSS_PARAM | 483 STATION_INFO_CONNECTED_TIME | 484 STATION_INFO_STA_FLAGS | 485 STATION_INFO_BEACON_LOSS_COUNT; 486 487 do_posix_clock_monotonic_gettime(&uptime); 488 sinfo->connected_time = uptime.tv_sec - sta->last_connected; 489 490 sinfo->inactive_time = jiffies_to_msecs(jiffies - sta->last_rx); 491 sinfo->tx_bytes = 0; 492 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) { 493 sinfo->tx_bytes += sta->tx_bytes[ac]; 494 packets += sta->tx_packets[ac]; 495 } 496 sinfo->tx_packets = packets; 497 sinfo->rx_bytes = sta->rx_bytes; 498 sinfo->rx_packets = sta->rx_packets; 499 sinfo->tx_retries = sta->tx_retry_count; 500 sinfo->tx_failed = sta->tx_retry_failed; 501 sinfo->rx_dropped_misc = sta->rx_dropped; 502 sinfo->beacon_loss_count = sta->beacon_loss_count; 503 504 if ((sta->local->hw.flags & IEEE80211_HW_SIGNAL_DBM) || 505 (sta->local->hw.flags & IEEE80211_HW_SIGNAL_UNSPEC)) { 506 sinfo->filled |= STATION_INFO_SIGNAL | STATION_INFO_SIGNAL_AVG; 507 if (!local->ops->get_rssi || 508 drv_get_rssi(local, sdata, &sta->sta, &sinfo->signal)) 509 sinfo->signal = (s8)sta->last_signal; 510 sinfo->signal_avg = (s8) -ewma_read(&sta->avg_signal); 511 } 512 if (sta->chains) { 513 sinfo->filled |= STATION_INFO_CHAIN_SIGNAL | 514 STATION_INFO_CHAIN_SIGNAL_AVG; 515 516 sinfo->chains = sta->chains; 517 for (i = 0; i < ARRAY_SIZE(sinfo->chain_signal); i++) { 518 sinfo->chain_signal[i] = sta->chain_signal_last[i]; 519 sinfo->chain_signal_avg[i] = 520 (s8) -ewma_read(&sta->chain_signal_avg[i]); 521 } 522 } 523 524 sta_set_rate_info_tx(sta, &sta->last_tx_rate, &sinfo->txrate); 525 sta_set_rate_info_rx(sta, &sinfo->rxrate); 526 527 if (ieee80211_vif_is_mesh(&sdata->vif)) { 528 #ifdef CONFIG_MAC80211_MESH 529 sinfo->filled |= STATION_INFO_LLID | 530 STATION_INFO_PLID | 531 STATION_INFO_PLINK_STATE | 532 STATION_INFO_LOCAL_PM | 533 STATION_INFO_PEER_PM | 534 STATION_INFO_NONPEER_PM; 535 536 sinfo->llid = sta->llid; 537 sinfo->plid = sta->plid; 538 sinfo->plink_state = sta->plink_state; 539 if (test_sta_flag(sta, WLAN_STA_TOFFSET_KNOWN)) { 540 sinfo->filled |= STATION_INFO_T_OFFSET; 541 sinfo->t_offset = sta->t_offset; 542 } 543 sinfo->local_pm = sta->local_pm; 544 sinfo->peer_pm = sta->peer_pm; 545 sinfo->nonpeer_pm = sta->nonpeer_pm; 546 #endif 547 } 548 549 sinfo->bss_param.flags = 0; 550 if (sdata->vif.bss_conf.use_cts_prot) 551 sinfo->bss_param.flags |= BSS_PARAM_FLAGS_CTS_PROT; 552 if (sdata->vif.bss_conf.use_short_preamble) 553 sinfo->bss_param.flags |= BSS_PARAM_FLAGS_SHORT_PREAMBLE; 554 if (sdata->vif.bss_conf.use_short_slot) 555 sinfo->bss_param.flags |= BSS_PARAM_FLAGS_SHORT_SLOT_TIME; 556 sinfo->bss_param.dtim_period = sdata->local->hw.conf.ps_dtim_period; 557 sinfo->bss_param.beacon_interval = sdata->vif.bss_conf.beacon_int; 558 559 sinfo->sta_flags.set = 0; 560 sinfo->sta_flags.mask = BIT(NL80211_STA_FLAG_AUTHORIZED) | 561 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) | 562 BIT(NL80211_STA_FLAG_WME) | 563 BIT(NL80211_STA_FLAG_MFP) | 564 BIT(NL80211_STA_FLAG_AUTHENTICATED) | 565 BIT(NL80211_STA_FLAG_ASSOCIATED) | 566 BIT(NL80211_STA_FLAG_TDLS_PEER); 567 if (test_sta_flag(sta, WLAN_STA_AUTHORIZED)) 568 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_AUTHORIZED); 569 if (test_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE)) 570 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_SHORT_PREAMBLE); 571 if (test_sta_flag(sta, WLAN_STA_WME)) 572 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_WME); 573 if (test_sta_flag(sta, WLAN_STA_MFP)) 574 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_MFP); 575 if (test_sta_flag(sta, WLAN_STA_AUTH)) 576 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_AUTHENTICATED); 577 if (test_sta_flag(sta, WLAN_STA_ASSOC)) 578 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_ASSOCIATED); 579 if (test_sta_flag(sta, WLAN_STA_TDLS_PEER)) 580 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_TDLS_PEER); 581 } 582 583 static const char ieee80211_gstrings_sta_stats[][ETH_GSTRING_LEN] = { 584 "rx_packets", "rx_bytes", "wep_weak_iv_count", 585 "rx_duplicates", "rx_fragments", "rx_dropped", 586 "tx_packets", "tx_bytes", "tx_fragments", 587 "tx_filtered", "tx_retry_failed", "tx_retries", 588 "beacon_loss", "sta_state", "txrate", "rxrate", "signal", 589 "channel", "noise", "ch_time", "ch_time_busy", 590 "ch_time_ext_busy", "ch_time_rx", "ch_time_tx" 591 }; 592 #define STA_STATS_LEN ARRAY_SIZE(ieee80211_gstrings_sta_stats) 593 594 static int ieee80211_get_et_sset_count(struct wiphy *wiphy, 595 struct net_device *dev, 596 int sset) 597 { 598 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 599 int rv = 0; 600 601 if (sset == ETH_SS_STATS) 602 rv += STA_STATS_LEN; 603 604 rv += drv_get_et_sset_count(sdata, sset); 605 606 if (rv == 0) 607 return -EOPNOTSUPP; 608 return rv; 609 } 610 611 static void ieee80211_get_et_stats(struct wiphy *wiphy, 612 struct net_device *dev, 613 struct ethtool_stats *stats, 614 u64 *data) 615 { 616 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 617 struct ieee80211_chanctx_conf *chanctx_conf; 618 struct ieee80211_channel *channel; 619 struct sta_info *sta; 620 struct ieee80211_local *local = sdata->local; 621 struct station_info sinfo; 622 struct survey_info survey; 623 int i, q; 624 #define STA_STATS_SURVEY_LEN 7 625 626 memset(data, 0, sizeof(u64) * STA_STATS_LEN); 627 628 #define ADD_STA_STATS(sta) \ 629 do { \ 630 data[i++] += sta->rx_packets; \ 631 data[i++] += sta->rx_bytes; \ 632 data[i++] += sta->wep_weak_iv_count; \ 633 data[i++] += sta->num_duplicates; \ 634 data[i++] += sta->rx_fragments; \ 635 data[i++] += sta->rx_dropped; \ 636 \ 637 data[i++] += sinfo.tx_packets; \ 638 data[i++] += sinfo.tx_bytes; \ 639 data[i++] += sta->tx_fragments; \ 640 data[i++] += sta->tx_filtered_count; \ 641 data[i++] += sta->tx_retry_failed; \ 642 data[i++] += sta->tx_retry_count; \ 643 data[i++] += sta->beacon_loss_count; \ 644 } while (0) 645 646 /* For Managed stations, find the single station based on BSSID 647 * and use that. For interface types, iterate through all available 648 * stations and add stats for any station that is assigned to this 649 * network device. 650 */ 651 652 mutex_lock(&local->sta_mtx); 653 654 if (sdata->vif.type == NL80211_IFTYPE_STATION) { 655 sta = sta_info_get_bss(sdata, sdata->u.mgd.bssid); 656 657 if (!(sta && !WARN_ON(sta->sdata->dev != dev))) 658 goto do_survey; 659 660 sinfo.filled = 0; 661 sta_set_sinfo(sta, &sinfo); 662 663 i = 0; 664 ADD_STA_STATS(sta); 665 666 data[i++] = sta->sta_state; 667 668 669 if (sinfo.filled & STATION_INFO_TX_BITRATE) 670 data[i] = 100000 * 671 cfg80211_calculate_bitrate(&sinfo.txrate); 672 i++; 673 if (sinfo.filled & STATION_INFO_RX_BITRATE) 674 data[i] = 100000 * 675 cfg80211_calculate_bitrate(&sinfo.rxrate); 676 i++; 677 678 if (sinfo.filled & STATION_INFO_SIGNAL_AVG) 679 data[i] = (u8)sinfo.signal_avg; 680 i++; 681 } else { 682 list_for_each_entry(sta, &local->sta_list, list) { 683 /* Make sure this station belongs to the proper dev */ 684 if (sta->sdata->dev != dev) 685 continue; 686 687 sinfo.filled = 0; 688 sta_set_sinfo(sta, &sinfo); 689 i = 0; 690 ADD_STA_STATS(sta); 691 } 692 } 693 694 do_survey: 695 i = STA_STATS_LEN - STA_STATS_SURVEY_LEN; 696 /* Get survey stats for current channel */ 697 survey.filled = 0; 698 699 rcu_read_lock(); 700 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); 701 if (chanctx_conf) 702 channel = chanctx_conf->def.chan; 703 else 704 channel = NULL; 705 rcu_read_unlock(); 706 707 if (channel) { 708 q = 0; 709 do { 710 survey.filled = 0; 711 if (drv_get_survey(local, q, &survey) != 0) { 712 survey.filled = 0; 713 break; 714 } 715 q++; 716 } while (channel != survey.channel); 717 } 718 719 if (survey.filled) 720 data[i++] = survey.channel->center_freq; 721 else 722 data[i++] = 0; 723 if (survey.filled & SURVEY_INFO_NOISE_DBM) 724 data[i++] = (u8)survey.noise; 725 else 726 data[i++] = -1LL; 727 if (survey.filled & SURVEY_INFO_CHANNEL_TIME) 728 data[i++] = survey.channel_time; 729 else 730 data[i++] = -1LL; 731 if (survey.filled & SURVEY_INFO_CHANNEL_TIME_BUSY) 732 data[i++] = survey.channel_time_busy; 733 else 734 data[i++] = -1LL; 735 if (survey.filled & SURVEY_INFO_CHANNEL_TIME_EXT_BUSY) 736 data[i++] = survey.channel_time_ext_busy; 737 else 738 data[i++] = -1LL; 739 if (survey.filled & SURVEY_INFO_CHANNEL_TIME_RX) 740 data[i++] = survey.channel_time_rx; 741 else 742 data[i++] = -1LL; 743 if (survey.filled & SURVEY_INFO_CHANNEL_TIME_TX) 744 data[i++] = survey.channel_time_tx; 745 else 746 data[i++] = -1LL; 747 748 mutex_unlock(&local->sta_mtx); 749 750 if (WARN_ON(i != STA_STATS_LEN)) 751 return; 752 753 drv_get_et_stats(sdata, stats, &(data[STA_STATS_LEN])); 754 } 755 756 static void ieee80211_get_et_strings(struct wiphy *wiphy, 757 struct net_device *dev, 758 u32 sset, u8 *data) 759 { 760 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 761 int sz_sta_stats = 0; 762 763 if (sset == ETH_SS_STATS) { 764 sz_sta_stats = sizeof(ieee80211_gstrings_sta_stats); 765 memcpy(data, ieee80211_gstrings_sta_stats, sz_sta_stats); 766 } 767 drv_get_et_strings(sdata, sset, &(data[sz_sta_stats])); 768 } 769 770 static int ieee80211_dump_station(struct wiphy *wiphy, struct net_device *dev, 771 int idx, u8 *mac, struct station_info *sinfo) 772 { 773 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 774 struct ieee80211_local *local = sdata->local; 775 struct sta_info *sta; 776 int ret = -ENOENT; 777 778 mutex_lock(&local->sta_mtx); 779 780 sta = sta_info_get_by_idx(sdata, idx); 781 if (sta) { 782 ret = 0; 783 memcpy(mac, sta->sta.addr, ETH_ALEN); 784 sta_set_sinfo(sta, sinfo); 785 } 786 787 mutex_unlock(&local->sta_mtx); 788 789 return ret; 790 } 791 792 static int ieee80211_dump_survey(struct wiphy *wiphy, struct net_device *dev, 793 int idx, struct survey_info *survey) 794 { 795 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); 796 797 return drv_get_survey(local, idx, survey); 798 } 799 800 static int ieee80211_get_station(struct wiphy *wiphy, struct net_device *dev, 801 u8 *mac, struct station_info *sinfo) 802 { 803 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 804 struct ieee80211_local *local = sdata->local; 805 struct sta_info *sta; 806 int ret = -ENOENT; 807 808 mutex_lock(&local->sta_mtx); 809 810 sta = sta_info_get_bss(sdata, mac); 811 if (sta) { 812 ret = 0; 813 sta_set_sinfo(sta, sinfo); 814 } 815 816 mutex_unlock(&local->sta_mtx); 817 818 return ret; 819 } 820 821 static int ieee80211_set_monitor_channel(struct wiphy *wiphy, 822 struct cfg80211_chan_def *chandef) 823 { 824 struct ieee80211_local *local = wiphy_priv(wiphy); 825 struct ieee80211_sub_if_data *sdata; 826 int ret = 0; 827 828 if (cfg80211_chandef_identical(&local->monitor_chandef, chandef)) 829 return 0; 830 831 mutex_lock(&local->mtx); 832 mutex_lock(&local->iflist_mtx); 833 if (local->use_chanctx) { 834 sdata = rcu_dereference_protected( 835 local->monitor_sdata, 836 lockdep_is_held(&local->iflist_mtx)); 837 if (sdata) { 838 ieee80211_vif_release_channel(sdata); 839 ret = ieee80211_vif_use_channel(sdata, chandef, 840 IEEE80211_CHANCTX_EXCLUSIVE); 841 } 842 } else if (local->open_count == local->monitors) { 843 local->_oper_chandef = *chandef; 844 ieee80211_hw_config(local, 0); 845 } 846 847 if (ret == 0) 848 local->monitor_chandef = *chandef; 849 mutex_unlock(&local->iflist_mtx); 850 mutex_unlock(&local->mtx); 851 852 return ret; 853 } 854 855 static int ieee80211_set_probe_resp(struct ieee80211_sub_if_data *sdata, 856 const u8 *resp, size_t resp_len) 857 { 858 struct probe_resp *new, *old; 859 860 if (!resp || !resp_len) 861 return 1; 862 863 old = sdata_dereference(sdata->u.ap.probe_resp, sdata); 864 865 new = kzalloc(sizeof(struct probe_resp) + resp_len, GFP_KERNEL); 866 if (!new) 867 return -ENOMEM; 868 869 new->len = resp_len; 870 memcpy(new->data, resp, resp_len); 871 872 rcu_assign_pointer(sdata->u.ap.probe_resp, new); 873 if (old) 874 kfree_rcu(old, rcu_head); 875 876 return 0; 877 } 878 879 static int ieee80211_assign_beacon(struct ieee80211_sub_if_data *sdata, 880 struct cfg80211_beacon_data *params) 881 { 882 struct beacon_data *new, *old; 883 int new_head_len, new_tail_len; 884 int size, err; 885 u32 changed = BSS_CHANGED_BEACON; 886 887 old = sdata_dereference(sdata->u.ap.beacon, sdata); 888 889 890 /* Need to have a beacon head if we don't have one yet */ 891 if (!params->head && !old) 892 return -EINVAL; 893 894 /* new or old head? */ 895 if (params->head) 896 new_head_len = params->head_len; 897 else 898 new_head_len = old->head_len; 899 900 /* new or old tail? */ 901 if (params->tail || !old) 902 /* params->tail_len will be zero for !params->tail */ 903 new_tail_len = params->tail_len; 904 else 905 new_tail_len = old->tail_len; 906 907 size = sizeof(*new) + new_head_len + new_tail_len; 908 909 new = kzalloc(size, GFP_KERNEL); 910 if (!new) 911 return -ENOMEM; 912 913 /* start filling the new info now */ 914 915 /* 916 * pointers go into the block we allocated, 917 * memory is | beacon_data | head | tail | 918 */ 919 new->head = ((u8 *) new) + sizeof(*new); 920 new->tail = new->head + new_head_len; 921 new->head_len = new_head_len; 922 new->tail_len = new_tail_len; 923 924 /* copy in head */ 925 if (params->head) 926 memcpy(new->head, params->head, new_head_len); 927 else 928 memcpy(new->head, old->head, new_head_len); 929 930 /* copy in optional tail */ 931 if (params->tail) 932 memcpy(new->tail, params->tail, new_tail_len); 933 else 934 if (old) 935 memcpy(new->tail, old->tail, new_tail_len); 936 937 err = ieee80211_set_probe_resp(sdata, params->probe_resp, 938 params->probe_resp_len); 939 if (err < 0) 940 return err; 941 if (err == 0) 942 changed |= BSS_CHANGED_AP_PROBE_RESP; 943 944 rcu_assign_pointer(sdata->u.ap.beacon, new); 945 946 if (old) 947 kfree_rcu(old, rcu_head); 948 949 return changed; 950 } 951 952 static int ieee80211_start_ap(struct wiphy *wiphy, struct net_device *dev, 953 struct cfg80211_ap_settings *params) 954 { 955 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 956 struct ieee80211_local *local = sdata->local; 957 struct beacon_data *old; 958 struct ieee80211_sub_if_data *vlan; 959 u32 changed = BSS_CHANGED_BEACON_INT | 960 BSS_CHANGED_BEACON_ENABLED | 961 BSS_CHANGED_BEACON | 962 BSS_CHANGED_SSID | 963 BSS_CHANGED_P2P_PS; 964 int err; 965 966 old = sdata_dereference(sdata->u.ap.beacon, sdata); 967 if (old) 968 return -EALREADY; 969 970 /* TODO: make hostapd tell us what it wants */ 971 sdata->smps_mode = IEEE80211_SMPS_OFF; 972 sdata->needed_rx_chains = sdata->local->rx_chains; 973 sdata->radar_required = params->radar_required; 974 975 mutex_lock(&local->mtx); 976 err = ieee80211_vif_use_channel(sdata, ¶ms->chandef, 977 IEEE80211_CHANCTX_SHARED); 978 mutex_unlock(&local->mtx); 979 if (err) 980 return err; 981 ieee80211_vif_copy_chanctx_to_vlans(sdata, false); 982 983 /* 984 * Apply control port protocol, this allows us to 985 * not encrypt dynamic WEP control frames. 986 */ 987 sdata->control_port_protocol = params->crypto.control_port_ethertype; 988 sdata->control_port_no_encrypt = params->crypto.control_port_no_encrypt; 989 sdata->encrypt_headroom = ieee80211_cs_headroom(sdata->local, 990 ¶ms->crypto, 991 sdata->vif.type); 992 993 list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) { 994 vlan->control_port_protocol = 995 params->crypto.control_port_ethertype; 996 vlan->control_port_no_encrypt = 997 params->crypto.control_port_no_encrypt; 998 vlan->encrypt_headroom = 999 ieee80211_cs_headroom(sdata->local, 1000 ¶ms->crypto, 1001 vlan->vif.type); 1002 } 1003 1004 sdata->vif.bss_conf.beacon_int = params->beacon_interval; 1005 sdata->vif.bss_conf.dtim_period = params->dtim_period; 1006 sdata->vif.bss_conf.enable_beacon = true; 1007 1008 sdata->vif.bss_conf.ssid_len = params->ssid_len; 1009 if (params->ssid_len) 1010 memcpy(sdata->vif.bss_conf.ssid, params->ssid, 1011 params->ssid_len); 1012 sdata->vif.bss_conf.hidden_ssid = 1013 (params->hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE); 1014 1015 memset(&sdata->vif.bss_conf.p2p_noa_attr, 0, 1016 sizeof(sdata->vif.bss_conf.p2p_noa_attr)); 1017 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow = 1018 params->p2p_ctwindow & IEEE80211_P2P_OPPPS_CTWINDOW_MASK; 1019 if (params->p2p_opp_ps) 1020 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |= 1021 IEEE80211_P2P_OPPPS_ENABLE_BIT; 1022 1023 err = ieee80211_assign_beacon(sdata, ¶ms->beacon); 1024 if (err < 0) { 1025 ieee80211_vif_release_channel(sdata); 1026 return err; 1027 } 1028 changed |= err; 1029 1030 err = drv_start_ap(sdata->local, sdata); 1031 if (err) { 1032 old = sdata_dereference(sdata->u.ap.beacon, sdata); 1033 1034 if (old) 1035 kfree_rcu(old, rcu_head); 1036 RCU_INIT_POINTER(sdata->u.ap.beacon, NULL); 1037 ieee80211_vif_release_channel(sdata); 1038 return err; 1039 } 1040 1041 ieee80211_recalc_dtim(local, sdata); 1042 ieee80211_bss_info_change_notify(sdata, changed); 1043 1044 netif_carrier_on(dev); 1045 list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) 1046 netif_carrier_on(vlan->dev); 1047 1048 return 0; 1049 } 1050 1051 static int ieee80211_change_beacon(struct wiphy *wiphy, struct net_device *dev, 1052 struct cfg80211_beacon_data *params) 1053 { 1054 struct ieee80211_sub_if_data *sdata; 1055 struct beacon_data *old; 1056 int err; 1057 1058 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1059 1060 /* don't allow changing the beacon while CSA is in place - offset 1061 * of channel switch counter may change 1062 */ 1063 if (sdata->vif.csa_active) 1064 return -EBUSY; 1065 1066 old = sdata_dereference(sdata->u.ap.beacon, sdata); 1067 if (!old) 1068 return -ENOENT; 1069 1070 err = ieee80211_assign_beacon(sdata, params); 1071 if (err < 0) 1072 return err; 1073 ieee80211_bss_info_change_notify(sdata, err); 1074 return 0; 1075 } 1076 1077 static int ieee80211_stop_ap(struct wiphy *wiphy, struct net_device *dev) 1078 { 1079 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1080 struct ieee80211_sub_if_data *vlan; 1081 struct ieee80211_local *local = sdata->local; 1082 struct beacon_data *old_beacon; 1083 struct probe_resp *old_probe_resp; 1084 struct cfg80211_chan_def chandef; 1085 1086 old_beacon = sdata_dereference(sdata->u.ap.beacon, sdata); 1087 if (!old_beacon) 1088 return -ENOENT; 1089 old_probe_resp = sdata_dereference(sdata->u.ap.probe_resp, sdata); 1090 1091 /* abort any running channel switch */ 1092 sdata->vif.csa_active = false; 1093 kfree(sdata->u.ap.next_beacon); 1094 sdata->u.ap.next_beacon = NULL; 1095 1096 /* turn off carrier for this interface and dependent VLANs */ 1097 list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) 1098 netif_carrier_off(vlan->dev); 1099 netif_carrier_off(dev); 1100 1101 /* remove beacon and probe response */ 1102 RCU_INIT_POINTER(sdata->u.ap.beacon, NULL); 1103 RCU_INIT_POINTER(sdata->u.ap.probe_resp, NULL); 1104 kfree_rcu(old_beacon, rcu_head); 1105 if (old_probe_resp) 1106 kfree_rcu(old_probe_resp, rcu_head); 1107 sdata->u.ap.driver_smps_mode = IEEE80211_SMPS_OFF; 1108 1109 __sta_info_flush(sdata, true); 1110 ieee80211_free_keys(sdata, true); 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 mutex_lock(&local->mtx); 1133 ieee80211_vif_release_channel(sdata); 1134 mutex_unlock(&local->mtx); 1135 1136 return 0; 1137 } 1138 1139 /* Layer 2 Update frame (802.2 Type 1 LLC XID Update response) */ 1140 struct iapp_layer2_update { 1141 u8 da[ETH_ALEN]; /* broadcast */ 1142 u8 sa[ETH_ALEN]; /* STA addr */ 1143 __be16 len; /* 6 */ 1144 u8 dsap; /* 0 */ 1145 u8 ssap; /* 0 */ 1146 u8 control; 1147 u8 xid_info[3]; 1148 } __packed; 1149 1150 static void ieee80211_send_layer2_update(struct sta_info *sta) 1151 { 1152 struct iapp_layer2_update *msg; 1153 struct sk_buff *skb; 1154 1155 /* Send Level 2 Update Frame to update forwarding tables in layer 2 1156 * bridge devices */ 1157 1158 skb = dev_alloc_skb(sizeof(*msg)); 1159 if (!skb) 1160 return; 1161 msg = (struct iapp_layer2_update *)skb_put(skb, sizeof(*msg)); 1162 1163 /* 802.2 Type 1 Logical Link Control (LLC) Exchange Identifier (XID) 1164 * Update response frame; IEEE Std 802.2-1998, 5.4.1.2.1 */ 1165 1166 eth_broadcast_addr(msg->da); 1167 memcpy(msg->sa, sta->sta.addr, ETH_ALEN); 1168 msg->len = htons(6); 1169 msg->dsap = 0; 1170 msg->ssap = 0x01; /* NULL LSAP, CR Bit: Response */ 1171 msg->control = 0xaf; /* XID response lsb.1111F101. 1172 * F=0 (no poll command; unsolicited frame) */ 1173 msg->xid_info[0] = 0x81; /* XID format identifier */ 1174 msg->xid_info[1] = 1; /* LLC types/classes: Type 1 LLC */ 1175 msg->xid_info[2] = 0; /* XID sender's receive window size (RW) */ 1176 1177 skb->dev = sta->sdata->dev; 1178 skb->protocol = eth_type_trans(skb, sta->sdata->dev); 1179 memset(skb->cb, 0, sizeof(skb->cb)); 1180 netif_rx_ni(skb); 1181 } 1182 1183 static int sta_apply_auth_flags(struct ieee80211_local *local, 1184 struct sta_info *sta, 1185 u32 mask, u32 set) 1186 { 1187 int ret; 1188 1189 if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED) && 1190 set & BIT(NL80211_STA_FLAG_AUTHENTICATED) && 1191 !test_sta_flag(sta, WLAN_STA_AUTH)) { 1192 ret = sta_info_move_state(sta, IEEE80211_STA_AUTH); 1193 if (ret) 1194 return ret; 1195 } 1196 1197 if (mask & BIT(NL80211_STA_FLAG_ASSOCIATED) && 1198 set & BIT(NL80211_STA_FLAG_ASSOCIATED) && 1199 !test_sta_flag(sta, WLAN_STA_ASSOC)) { 1200 ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC); 1201 if (ret) 1202 return ret; 1203 } 1204 1205 if (mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) { 1206 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED)) 1207 ret = sta_info_move_state(sta, IEEE80211_STA_AUTHORIZED); 1208 else if (test_sta_flag(sta, WLAN_STA_AUTHORIZED)) 1209 ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC); 1210 else 1211 ret = 0; 1212 if (ret) 1213 return ret; 1214 } 1215 1216 if (mask & BIT(NL80211_STA_FLAG_ASSOCIATED) && 1217 !(set & BIT(NL80211_STA_FLAG_ASSOCIATED)) && 1218 test_sta_flag(sta, WLAN_STA_ASSOC)) { 1219 ret = sta_info_move_state(sta, IEEE80211_STA_AUTH); 1220 if (ret) 1221 return ret; 1222 } 1223 1224 if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED) && 1225 !(set & BIT(NL80211_STA_FLAG_AUTHENTICATED)) && 1226 test_sta_flag(sta, WLAN_STA_AUTH)) { 1227 ret = sta_info_move_state(sta, IEEE80211_STA_NONE); 1228 if (ret) 1229 return ret; 1230 } 1231 1232 return 0; 1233 } 1234 1235 static int sta_apply_parameters(struct ieee80211_local *local, 1236 struct sta_info *sta, 1237 struct station_parameters *params) 1238 { 1239 int ret = 0; 1240 struct ieee80211_supported_band *sband; 1241 struct ieee80211_sub_if_data *sdata = sta->sdata; 1242 enum ieee80211_band band = ieee80211_get_sdata_band(sdata); 1243 u32 mask, set; 1244 1245 sband = local->hw.wiphy->bands[band]; 1246 1247 mask = params->sta_flags_mask; 1248 set = params->sta_flags_set; 1249 1250 if (ieee80211_vif_is_mesh(&sdata->vif)) { 1251 /* 1252 * In mesh mode, ASSOCIATED isn't part of the nl80211 1253 * API but must follow AUTHENTICATED for driver state. 1254 */ 1255 if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED)) 1256 mask |= BIT(NL80211_STA_FLAG_ASSOCIATED); 1257 if (set & BIT(NL80211_STA_FLAG_AUTHENTICATED)) 1258 set |= BIT(NL80211_STA_FLAG_ASSOCIATED); 1259 } else if (test_sta_flag(sta, WLAN_STA_TDLS_PEER)) { 1260 /* 1261 * TDLS -- everything follows authorized, but 1262 * only becoming authorized is possible, not 1263 * going back 1264 */ 1265 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED)) { 1266 set |= BIT(NL80211_STA_FLAG_AUTHENTICATED) | 1267 BIT(NL80211_STA_FLAG_ASSOCIATED); 1268 mask |= BIT(NL80211_STA_FLAG_AUTHENTICATED) | 1269 BIT(NL80211_STA_FLAG_ASSOCIATED); 1270 } 1271 } 1272 1273 ret = sta_apply_auth_flags(local, sta, mask, set); 1274 if (ret) 1275 return ret; 1276 1277 if (mask & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE)) { 1278 if (set & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE)) 1279 set_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE); 1280 else 1281 clear_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE); 1282 } 1283 1284 if (mask & BIT(NL80211_STA_FLAG_WME)) { 1285 if (set & BIT(NL80211_STA_FLAG_WME)) { 1286 set_sta_flag(sta, WLAN_STA_WME); 1287 sta->sta.wme = true; 1288 } else { 1289 clear_sta_flag(sta, WLAN_STA_WME); 1290 sta->sta.wme = false; 1291 } 1292 } 1293 1294 if (mask & BIT(NL80211_STA_FLAG_MFP)) { 1295 if (set & BIT(NL80211_STA_FLAG_MFP)) 1296 set_sta_flag(sta, WLAN_STA_MFP); 1297 else 1298 clear_sta_flag(sta, WLAN_STA_MFP); 1299 } 1300 1301 if (mask & BIT(NL80211_STA_FLAG_TDLS_PEER)) { 1302 if (set & BIT(NL80211_STA_FLAG_TDLS_PEER)) 1303 set_sta_flag(sta, WLAN_STA_TDLS_PEER); 1304 else 1305 clear_sta_flag(sta, WLAN_STA_TDLS_PEER); 1306 } 1307 1308 if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD) { 1309 sta->sta.uapsd_queues = params->uapsd_queues; 1310 sta->sta.max_sp = params->max_sp; 1311 } 1312 1313 /* 1314 * cfg80211 validates this (1-2007) and allows setting the AID 1315 * only when creating a new station entry 1316 */ 1317 if (params->aid) 1318 sta->sta.aid = params->aid; 1319 1320 /* 1321 * Some of the following updates would be racy if called on an 1322 * existing station, via ieee80211_change_station(). However, 1323 * all such changes are rejected by cfg80211 except for updates 1324 * changing the supported rates on an existing but not yet used 1325 * TDLS peer. 1326 */ 1327 1328 if (params->listen_interval >= 0) 1329 sta->listen_interval = params->listen_interval; 1330 1331 if (params->supported_rates) { 1332 ieee80211_parse_bitrates(&sdata->vif.bss_conf.chandef, 1333 sband, params->supported_rates, 1334 params->supported_rates_len, 1335 &sta->sta.supp_rates[band]); 1336 } 1337 1338 if (params->ht_capa) 1339 ieee80211_ht_cap_ie_to_sta_ht_cap(sdata, sband, 1340 params->ht_capa, sta); 1341 1342 if (params->vht_capa) 1343 ieee80211_vht_cap_ie_to_sta_vht_cap(sdata, sband, 1344 params->vht_capa, sta); 1345 1346 if (ieee80211_vif_is_mesh(&sdata->vif)) { 1347 #ifdef CONFIG_MAC80211_MESH 1348 u32 changed = 0; 1349 1350 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE) { 1351 switch (params->plink_state) { 1352 case NL80211_PLINK_ESTAB: 1353 if (sta->plink_state != NL80211_PLINK_ESTAB) 1354 changed = mesh_plink_inc_estab_count( 1355 sdata); 1356 sta->plink_state = params->plink_state; 1357 1358 ieee80211_mps_sta_status_update(sta); 1359 changed |= ieee80211_mps_set_sta_local_pm(sta, 1360 sdata->u.mesh.mshcfg.power_mode); 1361 break; 1362 case NL80211_PLINK_LISTEN: 1363 case NL80211_PLINK_BLOCKED: 1364 case NL80211_PLINK_OPN_SNT: 1365 case NL80211_PLINK_OPN_RCVD: 1366 case NL80211_PLINK_CNF_RCVD: 1367 case NL80211_PLINK_HOLDING: 1368 if (sta->plink_state == NL80211_PLINK_ESTAB) 1369 changed = mesh_plink_dec_estab_count( 1370 sdata); 1371 sta->plink_state = params->plink_state; 1372 1373 ieee80211_mps_sta_status_update(sta); 1374 changed |= ieee80211_mps_set_sta_local_pm(sta, 1375 NL80211_MESH_POWER_UNKNOWN); 1376 break; 1377 default: 1378 /* nothing */ 1379 break; 1380 } 1381 } 1382 1383 switch (params->plink_action) { 1384 case NL80211_PLINK_ACTION_NO_ACTION: 1385 /* nothing */ 1386 break; 1387 case NL80211_PLINK_ACTION_OPEN: 1388 changed |= mesh_plink_open(sta); 1389 break; 1390 case NL80211_PLINK_ACTION_BLOCK: 1391 changed |= mesh_plink_block(sta); 1392 break; 1393 } 1394 1395 if (params->local_pm) 1396 changed |= 1397 ieee80211_mps_set_sta_local_pm(sta, 1398 params->local_pm); 1399 ieee80211_mbss_info_change_notify(sdata, changed); 1400 #endif 1401 } 1402 1403 return 0; 1404 } 1405 1406 static int ieee80211_add_station(struct wiphy *wiphy, struct net_device *dev, 1407 u8 *mac, struct station_parameters *params) 1408 { 1409 struct ieee80211_local *local = wiphy_priv(wiphy); 1410 struct sta_info *sta; 1411 struct ieee80211_sub_if_data *sdata; 1412 int err; 1413 int layer2_update; 1414 1415 if (params->vlan) { 1416 sdata = IEEE80211_DEV_TO_SUB_IF(params->vlan); 1417 1418 if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN && 1419 sdata->vif.type != NL80211_IFTYPE_AP) 1420 return -EINVAL; 1421 } else 1422 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1423 1424 if (ether_addr_equal(mac, sdata->vif.addr)) 1425 return -EINVAL; 1426 1427 if (is_multicast_ether_addr(mac)) 1428 return -EINVAL; 1429 1430 sta = sta_info_alloc(sdata, mac, GFP_KERNEL); 1431 if (!sta) 1432 return -ENOMEM; 1433 1434 /* 1435 * defaults -- if userspace wants something else we'll 1436 * change it accordingly in sta_apply_parameters() 1437 */ 1438 if (!(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))) { 1439 sta_info_pre_move_state(sta, IEEE80211_STA_AUTH); 1440 sta_info_pre_move_state(sta, IEEE80211_STA_ASSOC); 1441 } 1442 1443 err = sta_apply_parameters(local, sta, params); 1444 if (err) { 1445 sta_info_free(local, sta); 1446 return err; 1447 } 1448 1449 /* 1450 * for TDLS, rate control should be initialized only when 1451 * rates are known and station is marked authorized 1452 */ 1453 if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER)) 1454 rate_control_rate_init(sta); 1455 1456 layer2_update = sdata->vif.type == NL80211_IFTYPE_AP_VLAN || 1457 sdata->vif.type == NL80211_IFTYPE_AP; 1458 1459 err = sta_info_insert_rcu(sta); 1460 if (err) { 1461 rcu_read_unlock(); 1462 return err; 1463 } 1464 1465 if (layer2_update) 1466 ieee80211_send_layer2_update(sta); 1467 1468 rcu_read_unlock(); 1469 1470 return 0; 1471 } 1472 1473 static int ieee80211_del_station(struct wiphy *wiphy, struct net_device *dev, 1474 u8 *mac) 1475 { 1476 struct ieee80211_sub_if_data *sdata; 1477 1478 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1479 1480 if (mac) 1481 return sta_info_destroy_addr_bss(sdata, mac); 1482 1483 sta_info_flush(sdata); 1484 return 0; 1485 } 1486 1487 static int ieee80211_change_station(struct wiphy *wiphy, 1488 struct net_device *dev, u8 *mac, 1489 struct station_parameters *params) 1490 { 1491 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1492 struct ieee80211_local *local = wiphy_priv(wiphy); 1493 struct sta_info *sta; 1494 struct ieee80211_sub_if_data *vlansdata; 1495 enum cfg80211_station_type statype; 1496 int err; 1497 1498 mutex_lock(&local->sta_mtx); 1499 1500 sta = sta_info_get_bss(sdata, mac); 1501 if (!sta) { 1502 err = -ENOENT; 1503 goto out_err; 1504 } 1505 1506 switch (sdata->vif.type) { 1507 case NL80211_IFTYPE_MESH_POINT: 1508 if (sdata->u.mesh.user_mpm) 1509 statype = CFG80211_STA_MESH_PEER_USER; 1510 else 1511 statype = CFG80211_STA_MESH_PEER_KERNEL; 1512 break; 1513 case NL80211_IFTYPE_ADHOC: 1514 statype = CFG80211_STA_IBSS; 1515 break; 1516 case NL80211_IFTYPE_STATION: 1517 if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER)) { 1518 statype = CFG80211_STA_AP_STA; 1519 break; 1520 } 1521 if (test_sta_flag(sta, WLAN_STA_AUTHORIZED)) 1522 statype = CFG80211_STA_TDLS_PEER_ACTIVE; 1523 else 1524 statype = CFG80211_STA_TDLS_PEER_SETUP; 1525 break; 1526 case NL80211_IFTYPE_AP: 1527 case NL80211_IFTYPE_AP_VLAN: 1528 statype = CFG80211_STA_AP_CLIENT; 1529 break; 1530 default: 1531 err = -EOPNOTSUPP; 1532 goto out_err; 1533 } 1534 1535 err = cfg80211_check_station_change(wiphy, params, statype); 1536 if (err) 1537 goto out_err; 1538 1539 if (params->vlan && params->vlan != sta->sdata->dev) { 1540 bool prev_4addr = false; 1541 bool new_4addr = false; 1542 1543 vlansdata = IEEE80211_DEV_TO_SUB_IF(params->vlan); 1544 1545 if (params->vlan->ieee80211_ptr->use_4addr) { 1546 if (vlansdata->u.vlan.sta) { 1547 err = -EBUSY; 1548 goto out_err; 1549 } 1550 1551 rcu_assign_pointer(vlansdata->u.vlan.sta, sta); 1552 new_4addr = true; 1553 } 1554 1555 if (sta->sdata->vif.type == NL80211_IFTYPE_AP_VLAN && 1556 sta->sdata->u.vlan.sta) { 1557 rcu_assign_pointer(sta->sdata->u.vlan.sta, NULL); 1558 prev_4addr = true; 1559 } 1560 1561 sta->sdata = vlansdata; 1562 1563 if (sta->sta_state == IEEE80211_STA_AUTHORIZED && 1564 prev_4addr != new_4addr) { 1565 if (new_4addr) 1566 atomic_dec(&sta->sdata->bss->num_mcast_sta); 1567 else 1568 atomic_inc(&sta->sdata->bss->num_mcast_sta); 1569 } 1570 1571 ieee80211_send_layer2_update(sta); 1572 } 1573 1574 err = sta_apply_parameters(local, sta, params); 1575 if (err) 1576 goto out_err; 1577 1578 /* When peer becomes authorized, init rate control as well */ 1579 if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) && 1580 test_sta_flag(sta, WLAN_STA_AUTHORIZED)) 1581 rate_control_rate_init(sta); 1582 1583 mutex_unlock(&local->sta_mtx); 1584 1585 if ((sdata->vif.type == NL80211_IFTYPE_AP || 1586 sdata->vif.type == NL80211_IFTYPE_AP_VLAN) && 1587 sta->known_smps_mode != sta->sdata->bss->req_smps && 1588 test_sta_flag(sta, WLAN_STA_AUTHORIZED) && 1589 sta_info_tx_streams(sta) != 1) { 1590 ht_dbg(sta->sdata, 1591 "%pM just authorized and MIMO capable - update SMPS\n", 1592 sta->sta.addr); 1593 ieee80211_send_smps_action(sta->sdata, 1594 sta->sdata->bss->req_smps, 1595 sta->sta.addr, 1596 sta->sdata->vif.bss_conf.bssid); 1597 } 1598 1599 if (sdata->vif.type == NL80211_IFTYPE_STATION && 1600 params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) { 1601 ieee80211_recalc_ps(local, -1); 1602 ieee80211_recalc_ps_vif(sdata); 1603 } 1604 1605 return 0; 1606 out_err: 1607 mutex_unlock(&local->sta_mtx); 1608 return err; 1609 } 1610 1611 #ifdef CONFIG_MAC80211_MESH 1612 static int ieee80211_add_mpath(struct wiphy *wiphy, struct net_device *dev, 1613 u8 *dst, u8 *next_hop) 1614 { 1615 struct ieee80211_sub_if_data *sdata; 1616 struct mesh_path *mpath; 1617 struct sta_info *sta; 1618 1619 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1620 1621 rcu_read_lock(); 1622 sta = sta_info_get(sdata, next_hop); 1623 if (!sta) { 1624 rcu_read_unlock(); 1625 return -ENOENT; 1626 } 1627 1628 mpath = mesh_path_add(sdata, dst); 1629 if (IS_ERR(mpath)) { 1630 rcu_read_unlock(); 1631 return PTR_ERR(mpath); 1632 } 1633 1634 mesh_path_fix_nexthop(mpath, sta); 1635 1636 rcu_read_unlock(); 1637 return 0; 1638 } 1639 1640 static int ieee80211_del_mpath(struct wiphy *wiphy, struct net_device *dev, 1641 u8 *dst) 1642 { 1643 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1644 1645 if (dst) 1646 return mesh_path_del(sdata, dst); 1647 1648 mesh_path_flush_by_iface(sdata); 1649 return 0; 1650 } 1651 1652 static int ieee80211_change_mpath(struct wiphy *wiphy, 1653 struct net_device *dev, 1654 u8 *dst, u8 *next_hop) 1655 { 1656 struct ieee80211_sub_if_data *sdata; 1657 struct mesh_path *mpath; 1658 struct sta_info *sta; 1659 1660 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1661 1662 rcu_read_lock(); 1663 1664 sta = sta_info_get(sdata, next_hop); 1665 if (!sta) { 1666 rcu_read_unlock(); 1667 return -ENOENT; 1668 } 1669 1670 mpath = mesh_path_lookup(sdata, dst); 1671 if (!mpath) { 1672 rcu_read_unlock(); 1673 return -ENOENT; 1674 } 1675 1676 mesh_path_fix_nexthop(mpath, sta); 1677 1678 rcu_read_unlock(); 1679 return 0; 1680 } 1681 1682 static void mpath_set_pinfo(struct mesh_path *mpath, u8 *next_hop, 1683 struct mpath_info *pinfo) 1684 { 1685 struct sta_info *next_hop_sta = rcu_dereference(mpath->next_hop); 1686 1687 if (next_hop_sta) 1688 memcpy(next_hop, next_hop_sta->sta.addr, ETH_ALEN); 1689 else 1690 memset(next_hop, 0, ETH_ALEN); 1691 1692 memset(pinfo, 0, sizeof(*pinfo)); 1693 1694 pinfo->generation = mesh_paths_generation; 1695 1696 pinfo->filled = MPATH_INFO_FRAME_QLEN | 1697 MPATH_INFO_SN | 1698 MPATH_INFO_METRIC | 1699 MPATH_INFO_EXPTIME | 1700 MPATH_INFO_DISCOVERY_TIMEOUT | 1701 MPATH_INFO_DISCOVERY_RETRIES | 1702 MPATH_INFO_FLAGS; 1703 1704 pinfo->frame_qlen = mpath->frame_queue.qlen; 1705 pinfo->sn = mpath->sn; 1706 pinfo->metric = mpath->metric; 1707 if (time_before(jiffies, mpath->exp_time)) 1708 pinfo->exptime = jiffies_to_msecs(mpath->exp_time - jiffies); 1709 pinfo->discovery_timeout = 1710 jiffies_to_msecs(mpath->discovery_timeout); 1711 pinfo->discovery_retries = mpath->discovery_retries; 1712 if (mpath->flags & MESH_PATH_ACTIVE) 1713 pinfo->flags |= NL80211_MPATH_FLAG_ACTIVE; 1714 if (mpath->flags & MESH_PATH_RESOLVING) 1715 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING; 1716 if (mpath->flags & MESH_PATH_SN_VALID) 1717 pinfo->flags |= NL80211_MPATH_FLAG_SN_VALID; 1718 if (mpath->flags & MESH_PATH_FIXED) 1719 pinfo->flags |= NL80211_MPATH_FLAG_FIXED; 1720 if (mpath->flags & MESH_PATH_RESOLVED) 1721 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVED; 1722 } 1723 1724 static int ieee80211_get_mpath(struct wiphy *wiphy, struct net_device *dev, 1725 u8 *dst, u8 *next_hop, struct mpath_info *pinfo) 1726 1727 { 1728 struct ieee80211_sub_if_data *sdata; 1729 struct mesh_path *mpath; 1730 1731 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1732 1733 rcu_read_lock(); 1734 mpath = mesh_path_lookup(sdata, dst); 1735 if (!mpath) { 1736 rcu_read_unlock(); 1737 return -ENOENT; 1738 } 1739 memcpy(dst, mpath->dst, ETH_ALEN); 1740 mpath_set_pinfo(mpath, next_hop, pinfo); 1741 rcu_read_unlock(); 1742 return 0; 1743 } 1744 1745 static int ieee80211_dump_mpath(struct wiphy *wiphy, struct net_device *dev, 1746 int idx, u8 *dst, u8 *next_hop, 1747 struct mpath_info *pinfo) 1748 { 1749 struct ieee80211_sub_if_data *sdata; 1750 struct mesh_path *mpath; 1751 1752 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1753 1754 rcu_read_lock(); 1755 mpath = mesh_path_lookup_by_idx(sdata, idx); 1756 if (!mpath) { 1757 rcu_read_unlock(); 1758 return -ENOENT; 1759 } 1760 memcpy(dst, mpath->dst, ETH_ALEN); 1761 mpath_set_pinfo(mpath, next_hop, pinfo); 1762 rcu_read_unlock(); 1763 return 0; 1764 } 1765 1766 static int ieee80211_get_mesh_config(struct wiphy *wiphy, 1767 struct net_device *dev, 1768 struct mesh_config *conf) 1769 { 1770 struct ieee80211_sub_if_data *sdata; 1771 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1772 1773 memcpy(conf, &(sdata->u.mesh.mshcfg), sizeof(struct mesh_config)); 1774 return 0; 1775 } 1776 1777 static inline bool _chg_mesh_attr(enum nl80211_meshconf_params parm, u32 mask) 1778 { 1779 return (mask >> (parm-1)) & 0x1; 1780 } 1781 1782 static int copy_mesh_setup(struct ieee80211_if_mesh *ifmsh, 1783 const struct mesh_setup *setup) 1784 { 1785 u8 *new_ie; 1786 const u8 *old_ie; 1787 struct ieee80211_sub_if_data *sdata = container_of(ifmsh, 1788 struct ieee80211_sub_if_data, u.mesh); 1789 1790 /* allocate information elements */ 1791 new_ie = NULL; 1792 old_ie = ifmsh->ie; 1793 1794 if (setup->ie_len) { 1795 new_ie = kmemdup(setup->ie, setup->ie_len, 1796 GFP_KERNEL); 1797 if (!new_ie) 1798 return -ENOMEM; 1799 } 1800 ifmsh->ie_len = setup->ie_len; 1801 ifmsh->ie = new_ie; 1802 kfree(old_ie); 1803 1804 /* now copy the rest of the setup parameters */ 1805 ifmsh->mesh_id_len = setup->mesh_id_len; 1806 memcpy(ifmsh->mesh_id, setup->mesh_id, ifmsh->mesh_id_len); 1807 ifmsh->mesh_sp_id = setup->sync_method; 1808 ifmsh->mesh_pp_id = setup->path_sel_proto; 1809 ifmsh->mesh_pm_id = setup->path_metric; 1810 ifmsh->user_mpm = setup->user_mpm; 1811 ifmsh->mesh_auth_id = setup->auth_id; 1812 ifmsh->security = IEEE80211_MESH_SEC_NONE; 1813 if (setup->is_authenticated) 1814 ifmsh->security |= IEEE80211_MESH_SEC_AUTHED; 1815 if (setup->is_secure) 1816 ifmsh->security |= IEEE80211_MESH_SEC_SECURED; 1817 1818 /* mcast rate setting in Mesh Node */ 1819 memcpy(sdata->vif.bss_conf.mcast_rate, setup->mcast_rate, 1820 sizeof(setup->mcast_rate)); 1821 sdata->vif.bss_conf.basic_rates = setup->basic_rates; 1822 1823 sdata->vif.bss_conf.beacon_int = setup->beacon_interval; 1824 sdata->vif.bss_conf.dtim_period = setup->dtim_period; 1825 1826 return 0; 1827 } 1828 1829 static int ieee80211_update_mesh_config(struct wiphy *wiphy, 1830 struct net_device *dev, u32 mask, 1831 const struct mesh_config *nconf) 1832 { 1833 struct mesh_config *conf; 1834 struct ieee80211_sub_if_data *sdata; 1835 struct ieee80211_if_mesh *ifmsh; 1836 1837 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1838 ifmsh = &sdata->u.mesh; 1839 1840 /* Set the config options which we are interested in setting */ 1841 conf = &(sdata->u.mesh.mshcfg); 1842 if (_chg_mesh_attr(NL80211_MESHCONF_RETRY_TIMEOUT, mask)) 1843 conf->dot11MeshRetryTimeout = nconf->dot11MeshRetryTimeout; 1844 if (_chg_mesh_attr(NL80211_MESHCONF_CONFIRM_TIMEOUT, mask)) 1845 conf->dot11MeshConfirmTimeout = nconf->dot11MeshConfirmTimeout; 1846 if (_chg_mesh_attr(NL80211_MESHCONF_HOLDING_TIMEOUT, mask)) 1847 conf->dot11MeshHoldingTimeout = nconf->dot11MeshHoldingTimeout; 1848 if (_chg_mesh_attr(NL80211_MESHCONF_MAX_PEER_LINKS, mask)) 1849 conf->dot11MeshMaxPeerLinks = nconf->dot11MeshMaxPeerLinks; 1850 if (_chg_mesh_attr(NL80211_MESHCONF_MAX_RETRIES, mask)) 1851 conf->dot11MeshMaxRetries = nconf->dot11MeshMaxRetries; 1852 if (_chg_mesh_attr(NL80211_MESHCONF_TTL, mask)) 1853 conf->dot11MeshTTL = nconf->dot11MeshTTL; 1854 if (_chg_mesh_attr(NL80211_MESHCONF_ELEMENT_TTL, mask)) 1855 conf->element_ttl = nconf->element_ttl; 1856 if (_chg_mesh_attr(NL80211_MESHCONF_AUTO_OPEN_PLINKS, mask)) { 1857 if (ifmsh->user_mpm) 1858 return -EBUSY; 1859 conf->auto_open_plinks = nconf->auto_open_plinks; 1860 } 1861 if (_chg_mesh_attr(NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR, mask)) 1862 conf->dot11MeshNbrOffsetMaxNeighbor = 1863 nconf->dot11MeshNbrOffsetMaxNeighbor; 1864 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES, mask)) 1865 conf->dot11MeshHWMPmaxPREQretries = 1866 nconf->dot11MeshHWMPmaxPREQretries; 1867 if (_chg_mesh_attr(NL80211_MESHCONF_PATH_REFRESH_TIME, mask)) 1868 conf->path_refresh_time = nconf->path_refresh_time; 1869 if (_chg_mesh_attr(NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT, mask)) 1870 conf->min_discovery_timeout = nconf->min_discovery_timeout; 1871 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT, mask)) 1872 conf->dot11MeshHWMPactivePathTimeout = 1873 nconf->dot11MeshHWMPactivePathTimeout; 1874 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL, mask)) 1875 conf->dot11MeshHWMPpreqMinInterval = 1876 nconf->dot11MeshHWMPpreqMinInterval; 1877 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL, mask)) 1878 conf->dot11MeshHWMPperrMinInterval = 1879 nconf->dot11MeshHWMPperrMinInterval; 1880 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME, 1881 mask)) 1882 conf->dot11MeshHWMPnetDiameterTraversalTime = 1883 nconf->dot11MeshHWMPnetDiameterTraversalTime; 1884 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOTMODE, mask)) { 1885 conf->dot11MeshHWMPRootMode = nconf->dot11MeshHWMPRootMode; 1886 ieee80211_mesh_root_setup(ifmsh); 1887 } 1888 if (_chg_mesh_attr(NL80211_MESHCONF_GATE_ANNOUNCEMENTS, mask)) { 1889 /* our current gate announcement implementation rides on root 1890 * announcements, so require this ifmsh to also be a root node 1891 * */ 1892 if (nconf->dot11MeshGateAnnouncementProtocol && 1893 !(conf->dot11MeshHWMPRootMode > IEEE80211_ROOTMODE_ROOT)) { 1894 conf->dot11MeshHWMPRootMode = IEEE80211_PROACTIVE_RANN; 1895 ieee80211_mesh_root_setup(ifmsh); 1896 } 1897 conf->dot11MeshGateAnnouncementProtocol = 1898 nconf->dot11MeshGateAnnouncementProtocol; 1899 } 1900 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_RANN_INTERVAL, mask)) 1901 conf->dot11MeshHWMPRannInterval = 1902 nconf->dot11MeshHWMPRannInterval; 1903 if (_chg_mesh_attr(NL80211_MESHCONF_FORWARDING, mask)) 1904 conf->dot11MeshForwarding = nconf->dot11MeshForwarding; 1905 if (_chg_mesh_attr(NL80211_MESHCONF_RSSI_THRESHOLD, mask)) { 1906 /* our RSSI threshold implementation is supported only for 1907 * devices that report signal in dBm. 1908 */ 1909 if (!(sdata->local->hw.flags & IEEE80211_HW_SIGNAL_DBM)) 1910 return -ENOTSUPP; 1911 conf->rssi_threshold = nconf->rssi_threshold; 1912 } 1913 if (_chg_mesh_attr(NL80211_MESHCONF_HT_OPMODE, mask)) { 1914 conf->ht_opmode = nconf->ht_opmode; 1915 sdata->vif.bss_conf.ht_operation_mode = nconf->ht_opmode; 1916 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_HT); 1917 } 1918 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT, mask)) 1919 conf->dot11MeshHWMPactivePathToRootTimeout = 1920 nconf->dot11MeshHWMPactivePathToRootTimeout; 1921 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOT_INTERVAL, mask)) 1922 conf->dot11MeshHWMProotInterval = 1923 nconf->dot11MeshHWMProotInterval; 1924 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL, mask)) 1925 conf->dot11MeshHWMPconfirmationInterval = 1926 nconf->dot11MeshHWMPconfirmationInterval; 1927 if (_chg_mesh_attr(NL80211_MESHCONF_POWER_MODE, mask)) { 1928 conf->power_mode = nconf->power_mode; 1929 ieee80211_mps_local_status_update(sdata); 1930 } 1931 if (_chg_mesh_attr(NL80211_MESHCONF_AWAKE_WINDOW, mask)) 1932 conf->dot11MeshAwakeWindowDuration = 1933 nconf->dot11MeshAwakeWindowDuration; 1934 if (_chg_mesh_attr(NL80211_MESHCONF_PLINK_TIMEOUT, mask)) 1935 conf->plink_timeout = nconf->plink_timeout; 1936 ieee80211_mbss_info_change_notify(sdata, BSS_CHANGED_BEACON); 1937 return 0; 1938 } 1939 1940 static int ieee80211_join_mesh(struct wiphy *wiphy, struct net_device *dev, 1941 const struct mesh_config *conf, 1942 const struct mesh_setup *setup) 1943 { 1944 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1945 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh; 1946 int err; 1947 1948 memcpy(&ifmsh->mshcfg, conf, sizeof(struct mesh_config)); 1949 err = copy_mesh_setup(ifmsh, setup); 1950 if (err) 1951 return err; 1952 1953 /* can mesh use other SMPS modes? */ 1954 sdata->smps_mode = IEEE80211_SMPS_OFF; 1955 sdata->needed_rx_chains = sdata->local->rx_chains; 1956 1957 mutex_lock(&sdata->local->mtx); 1958 err = ieee80211_vif_use_channel(sdata, &setup->chandef, 1959 IEEE80211_CHANCTX_SHARED); 1960 mutex_unlock(&sdata->local->mtx); 1961 if (err) 1962 return err; 1963 1964 return ieee80211_start_mesh(sdata); 1965 } 1966 1967 static int ieee80211_leave_mesh(struct wiphy *wiphy, struct net_device *dev) 1968 { 1969 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1970 1971 ieee80211_stop_mesh(sdata); 1972 mutex_lock(&sdata->local->mtx); 1973 ieee80211_vif_release_channel(sdata); 1974 mutex_unlock(&sdata->local->mtx); 1975 1976 return 0; 1977 } 1978 #endif 1979 1980 static int ieee80211_change_bss(struct wiphy *wiphy, 1981 struct net_device *dev, 1982 struct bss_parameters *params) 1983 { 1984 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1985 enum ieee80211_band band; 1986 u32 changed = 0; 1987 1988 if (!sdata_dereference(sdata->u.ap.beacon, sdata)) 1989 return -ENOENT; 1990 1991 band = ieee80211_get_sdata_band(sdata); 1992 1993 if (params->use_cts_prot >= 0) { 1994 sdata->vif.bss_conf.use_cts_prot = params->use_cts_prot; 1995 changed |= BSS_CHANGED_ERP_CTS_PROT; 1996 } 1997 if (params->use_short_preamble >= 0) { 1998 sdata->vif.bss_conf.use_short_preamble = 1999 params->use_short_preamble; 2000 changed |= BSS_CHANGED_ERP_PREAMBLE; 2001 } 2002 2003 if (!sdata->vif.bss_conf.use_short_slot && 2004 band == IEEE80211_BAND_5GHZ) { 2005 sdata->vif.bss_conf.use_short_slot = true; 2006 changed |= BSS_CHANGED_ERP_SLOT; 2007 } 2008 2009 if (params->use_short_slot_time >= 0) { 2010 sdata->vif.bss_conf.use_short_slot = 2011 params->use_short_slot_time; 2012 changed |= BSS_CHANGED_ERP_SLOT; 2013 } 2014 2015 if (params->basic_rates) { 2016 ieee80211_parse_bitrates(&sdata->vif.bss_conf.chandef, 2017 wiphy->bands[band], 2018 params->basic_rates, 2019 params->basic_rates_len, 2020 &sdata->vif.bss_conf.basic_rates); 2021 changed |= BSS_CHANGED_BASIC_RATES; 2022 } 2023 2024 if (params->ap_isolate >= 0) { 2025 if (params->ap_isolate) 2026 sdata->flags |= IEEE80211_SDATA_DONT_BRIDGE_PACKETS; 2027 else 2028 sdata->flags &= ~IEEE80211_SDATA_DONT_BRIDGE_PACKETS; 2029 } 2030 2031 if (params->ht_opmode >= 0) { 2032 sdata->vif.bss_conf.ht_operation_mode = 2033 (u16) params->ht_opmode; 2034 changed |= BSS_CHANGED_HT; 2035 } 2036 2037 if (params->p2p_ctwindow >= 0) { 2038 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow &= 2039 ~IEEE80211_P2P_OPPPS_CTWINDOW_MASK; 2040 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |= 2041 params->p2p_ctwindow & IEEE80211_P2P_OPPPS_CTWINDOW_MASK; 2042 changed |= BSS_CHANGED_P2P_PS; 2043 } 2044 2045 if (params->p2p_opp_ps > 0) { 2046 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |= 2047 IEEE80211_P2P_OPPPS_ENABLE_BIT; 2048 changed |= BSS_CHANGED_P2P_PS; 2049 } else if (params->p2p_opp_ps == 0) { 2050 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow &= 2051 ~IEEE80211_P2P_OPPPS_ENABLE_BIT; 2052 changed |= BSS_CHANGED_P2P_PS; 2053 } 2054 2055 ieee80211_bss_info_change_notify(sdata, changed); 2056 2057 return 0; 2058 } 2059 2060 static int ieee80211_set_txq_params(struct wiphy *wiphy, 2061 struct net_device *dev, 2062 struct ieee80211_txq_params *params) 2063 { 2064 struct ieee80211_local *local = wiphy_priv(wiphy); 2065 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2066 struct ieee80211_tx_queue_params p; 2067 2068 if (!local->ops->conf_tx) 2069 return -EOPNOTSUPP; 2070 2071 if (local->hw.queues < IEEE80211_NUM_ACS) 2072 return -EOPNOTSUPP; 2073 2074 memset(&p, 0, sizeof(p)); 2075 p.aifs = params->aifs; 2076 p.cw_max = params->cwmax; 2077 p.cw_min = params->cwmin; 2078 p.txop = params->txop; 2079 2080 /* 2081 * Setting tx queue params disables u-apsd because it's only 2082 * called in master mode. 2083 */ 2084 p.uapsd = false; 2085 2086 sdata->tx_conf[params->ac] = p; 2087 if (drv_conf_tx(local, sdata, params->ac, &p)) { 2088 wiphy_debug(local->hw.wiphy, 2089 "failed to set TX queue parameters for AC %d\n", 2090 params->ac); 2091 return -EINVAL; 2092 } 2093 2094 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_QOS); 2095 2096 return 0; 2097 } 2098 2099 #ifdef CONFIG_PM 2100 static int ieee80211_suspend(struct wiphy *wiphy, 2101 struct cfg80211_wowlan *wowlan) 2102 { 2103 return __ieee80211_suspend(wiphy_priv(wiphy), wowlan); 2104 } 2105 2106 static int ieee80211_resume(struct wiphy *wiphy) 2107 { 2108 return __ieee80211_resume(wiphy_priv(wiphy)); 2109 } 2110 #else 2111 #define ieee80211_suspend NULL 2112 #define ieee80211_resume NULL 2113 #endif 2114 2115 static int ieee80211_scan(struct wiphy *wiphy, 2116 struct cfg80211_scan_request *req) 2117 { 2118 struct ieee80211_sub_if_data *sdata; 2119 2120 sdata = IEEE80211_WDEV_TO_SUB_IF(req->wdev); 2121 2122 switch (ieee80211_vif_type_p2p(&sdata->vif)) { 2123 case NL80211_IFTYPE_STATION: 2124 case NL80211_IFTYPE_ADHOC: 2125 case NL80211_IFTYPE_MESH_POINT: 2126 case NL80211_IFTYPE_P2P_CLIENT: 2127 case NL80211_IFTYPE_P2P_DEVICE: 2128 break; 2129 case NL80211_IFTYPE_P2P_GO: 2130 if (sdata->local->ops->hw_scan) 2131 break; 2132 /* 2133 * FIXME: implement NoA while scanning in software, 2134 * for now fall through to allow scanning only when 2135 * beaconing hasn't been configured yet 2136 */ 2137 case NL80211_IFTYPE_AP: 2138 /* 2139 * If the scan has been forced (and the driver supports 2140 * forcing), don't care about being beaconing already. 2141 * This will create problems to the attached stations (e.g. all 2142 * the frames sent while scanning on other channel will be 2143 * lost) 2144 */ 2145 if (sdata->u.ap.beacon && 2146 (!(wiphy->features & NL80211_FEATURE_AP_SCAN) || 2147 !(req->flags & NL80211_SCAN_FLAG_AP))) 2148 return -EOPNOTSUPP; 2149 break; 2150 default: 2151 return -EOPNOTSUPP; 2152 } 2153 2154 return ieee80211_request_scan(sdata, req); 2155 } 2156 2157 static int 2158 ieee80211_sched_scan_start(struct wiphy *wiphy, 2159 struct net_device *dev, 2160 struct cfg80211_sched_scan_request *req) 2161 { 2162 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2163 2164 if (!sdata->local->ops->sched_scan_start) 2165 return -EOPNOTSUPP; 2166 2167 return ieee80211_request_sched_scan_start(sdata, req); 2168 } 2169 2170 static int 2171 ieee80211_sched_scan_stop(struct wiphy *wiphy, struct net_device *dev) 2172 { 2173 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2174 2175 if (!sdata->local->ops->sched_scan_stop) 2176 return -EOPNOTSUPP; 2177 2178 return ieee80211_request_sched_scan_stop(sdata); 2179 } 2180 2181 static int ieee80211_auth(struct wiphy *wiphy, struct net_device *dev, 2182 struct cfg80211_auth_request *req) 2183 { 2184 return ieee80211_mgd_auth(IEEE80211_DEV_TO_SUB_IF(dev), req); 2185 } 2186 2187 static int ieee80211_assoc(struct wiphy *wiphy, struct net_device *dev, 2188 struct cfg80211_assoc_request *req) 2189 { 2190 return ieee80211_mgd_assoc(IEEE80211_DEV_TO_SUB_IF(dev), req); 2191 } 2192 2193 static int ieee80211_deauth(struct wiphy *wiphy, struct net_device *dev, 2194 struct cfg80211_deauth_request *req) 2195 { 2196 return ieee80211_mgd_deauth(IEEE80211_DEV_TO_SUB_IF(dev), req); 2197 } 2198 2199 static int ieee80211_disassoc(struct wiphy *wiphy, struct net_device *dev, 2200 struct cfg80211_disassoc_request *req) 2201 { 2202 return ieee80211_mgd_disassoc(IEEE80211_DEV_TO_SUB_IF(dev), req); 2203 } 2204 2205 static int ieee80211_join_ibss(struct wiphy *wiphy, struct net_device *dev, 2206 struct cfg80211_ibss_params *params) 2207 { 2208 return ieee80211_ibss_join(IEEE80211_DEV_TO_SUB_IF(dev), params); 2209 } 2210 2211 static int ieee80211_leave_ibss(struct wiphy *wiphy, struct net_device *dev) 2212 { 2213 return ieee80211_ibss_leave(IEEE80211_DEV_TO_SUB_IF(dev)); 2214 } 2215 2216 static int ieee80211_set_mcast_rate(struct wiphy *wiphy, struct net_device *dev, 2217 int rate[IEEE80211_NUM_BANDS]) 2218 { 2219 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2220 2221 memcpy(sdata->vif.bss_conf.mcast_rate, rate, 2222 sizeof(int) * IEEE80211_NUM_BANDS); 2223 2224 return 0; 2225 } 2226 2227 static int ieee80211_set_wiphy_params(struct wiphy *wiphy, u32 changed) 2228 { 2229 struct ieee80211_local *local = wiphy_priv(wiphy); 2230 int err; 2231 2232 if (changed & WIPHY_PARAM_FRAG_THRESHOLD) { 2233 err = drv_set_frag_threshold(local, wiphy->frag_threshold); 2234 2235 if (err) 2236 return err; 2237 } 2238 2239 if (changed & WIPHY_PARAM_COVERAGE_CLASS) { 2240 err = drv_set_coverage_class(local, wiphy->coverage_class); 2241 2242 if (err) 2243 return err; 2244 } 2245 2246 if (changed & WIPHY_PARAM_RTS_THRESHOLD) { 2247 err = drv_set_rts_threshold(local, wiphy->rts_threshold); 2248 2249 if (err) 2250 return err; 2251 } 2252 2253 if (changed & WIPHY_PARAM_RETRY_SHORT) { 2254 if (wiphy->retry_short > IEEE80211_MAX_TX_RETRY) 2255 return -EINVAL; 2256 local->hw.conf.short_frame_max_tx_count = wiphy->retry_short; 2257 } 2258 if (changed & WIPHY_PARAM_RETRY_LONG) { 2259 if (wiphy->retry_long > IEEE80211_MAX_TX_RETRY) 2260 return -EINVAL; 2261 local->hw.conf.long_frame_max_tx_count = wiphy->retry_long; 2262 } 2263 if (changed & 2264 (WIPHY_PARAM_RETRY_SHORT | WIPHY_PARAM_RETRY_LONG)) 2265 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_RETRY_LIMITS); 2266 2267 return 0; 2268 } 2269 2270 static int ieee80211_set_tx_power(struct wiphy *wiphy, 2271 struct wireless_dev *wdev, 2272 enum nl80211_tx_power_setting type, int mbm) 2273 { 2274 struct ieee80211_local *local = wiphy_priv(wiphy); 2275 struct ieee80211_sub_if_data *sdata; 2276 2277 if (wdev) { 2278 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 2279 2280 switch (type) { 2281 case NL80211_TX_POWER_AUTOMATIC: 2282 sdata->user_power_level = IEEE80211_UNSET_POWER_LEVEL; 2283 break; 2284 case NL80211_TX_POWER_LIMITED: 2285 case NL80211_TX_POWER_FIXED: 2286 if (mbm < 0 || (mbm % 100)) 2287 return -EOPNOTSUPP; 2288 sdata->user_power_level = MBM_TO_DBM(mbm); 2289 break; 2290 } 2291 2292 ieee80211_recalc_txpower(sdata); 2293 2294 return 0; 2295 } 2296 2297 switch (type) { 2298 case NL80211_TX_POWER_AUTOMATIC: 2299 local->user_power_level = IEEE80211_UNSET_POWER_LEVEL; 2300 break; 2301 case NL80211_TX_POWER_LIMITED: 2302 case NL80211_TX_POWER_FIXED: 2303 if (mbm < 0 || (mbm % 100)) 2304 return -EOPNOTSUPP; 2305 local->user_power_level = MBM_TO_DBM(mbm); 2306 break; 2307 } 2308 2309 mutex_lock(&local->iflist_mtx); 2310 list_for_each_entry(sdata, &local->interfaces, list) 2311 sdata->user_power_level = local->user_power_level; 2312 list_for_each_entry(sdata, &local->interfaces, list) 2313 ieee80211_recalc_txpower(sdata); 2314 mutex_unlock(&local->iflist_mtx); 2315 2316 return 0; 2317 } 2318 2319 static int ieee80211_get_tx_power(struct wiphy *wiphy, 2320 struct wireless_dev *wdev, 2321 int *dbm) 2322 { 2323 struct ieee80211_local *local = wiphy_priv(wiphy); 2324 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 2325 2326 if (!local->use_chanctx) 2327 *dbm = local->hw.conf.power_level; 2328 else 2329 *dbm = sdata->vif.bss_conf.txpower; 2330 2331 return 0; 2332 } 2333 2334 static int ieee80211_set_wds_peer(struct wiphy *wiphy, struct net_device *dev, 2335 const u8 *addr) 2336 { 2337 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2338 2339 memcpy(&sdata->u.wds.remote_addr, addr, ETH_ALEN); 2340 2341 return 0; 2342 } 2343 2344 static void ieee80211_rfkill_poll(struct wiphy *wiphy) 2345 { 2346 struct ieee80211_local *local = wiphy_priv(wiphy); 2347 2348 drv_rfkill_poll(local); 2349 } 2350 2351 #ifdef CONFIG_NL80211_TESTMODE 2352 static int ieee80211_testmode_cmd(struct wiphy *wiphy, 2353 struct wireless_dev *wdev, 2354 void *data, int len) 2355 { 2356 struct ieee80211_local *local = wiphy_priv(wiphy); 2357 struct ieee80211_vif *vif = NULL; 2358 2359 if (!local->ops->testmode_cmd) 2360 return -EOPNOTSUPP; 2361 2362 if (wdev) { 2363 struct ieee80211_sub_if_data *sdata; 2364 2365 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 2366 if (sdata->flags & IEEE80211_SDATA_IN_DRIVER) 2367 vif = &sdata->vif; 2368 } 2369 2370 return local->ops->testmode_cmd(&local->hw, vif, data, len); 2371 } 2372 2373 static int ieee80211_testmode_dump(struct wiphy *wiphy, 2374 struct sk_buff *skb, 2375 struct netlink_callback *cb, 2376 void *data, int len) 2377 { 2378 struct ieee80211_local *local = wiphy_priv(wiphy); 2379 2380 if (!local->ops->testmode_dump) 2381 return -EOPNOTSUPP; 2382 2383 return local->ops->testmode_dump(&local->hw, skb, cb, data, len); 2384 } 2385 #endif 2386 2387 int __ieee80211_request_smps_ap(struct ieee80211_sub_if_data *sdata, 2388 enum ieee80211_smps_mode smps_mode) 2389 { 2390 struct sta_info *sta; 2391 enum ieee80211_smps_mode old_req; 2392 int i; 2393 2394 if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_AP)) 2395 return -EINVAL; 2396 2397 if (sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_20_NOHT) 2398 return 0; 2399 2400 old_req = sdata->u.ap.req_smps; 2401 sdata->u.ap.req_smps = smps_mode; 2402 2403 /* AUTOMATIC doesn't mean much for AP - don't allow it */ 2404 if (old_req == smps_mode || 2405 smps_mode == IEEE80211_SMPS_AUTOMATIC) 2406 return 0; 2407 2408 /* If no associated stations, there's no need to do anything */ 2409 if (!atomic_read(&sdata->u.ap.num_mcast_sta)) { 2410 sdata->smps_mode = smps_mode; 2411 ieee80211_queue_work(&sdata->local->hw, &sdata->recalc_smps); 2412 return 0; 2413 } 2414 2415 ht_dbg(sdata, 2416 "SMSP %d requested in AP mode, sending Action frame to %d stations\n", 2417 smps_mode, atomic_read(&sdata->u.ap.num_mcast_sta)); 2418 2419 mutex_lock(&sdata->local->sta_mtx); 2420 for (i = 0; i < STA_HASH_SIZE; i++) { 2421 for (sta = rcu_dereference_protected(sdata->local->sta_hash[i], 2422 lockdep_is_held(&sdata->local->sta_mtx)); 2423 sta; 2424 sta = rcu_dereference_protected(sta->hnext, 2425 lockdep_is_held(&sdata->local->sta_mtx))) { 2426 /* 2427 * Only stations associated to our AP and 2428 * associated VLANs 2429 */ 2430 if (sta->sdata->bss != &sdata->u.ap) 2431 continue; 2432 2433 /* This station doesn't support MIMO - skip it */ 2434 if (sta_info_tx_streams(sta) == 1) 2435 continue; 2436 2437 /* 2438 * Don't wake up a STA just to send the action frame 2439 * unless we are getting more restrictive. 2440 */ 2441 if (test_sta_flag(sta, WLAN_STA_PS_STA) && 2442 !ieee80211_smps_is_restrictive(sta->known_smps_mode, 2443 smps_mode)) { 2444 ht_dbg(sdata, 2445 "Won't send SMPS to sleeping STA %pM\n", 2446 sta->sta.addr); 2447 continue; 2448 } 2449 2450 /* 2451 * If the STA is not authorized, wait until it gets 2452 * authorized and the action frame will be sent then. 2453 */ 2454 if (!test_sta_flag(sta, WLAN_STA_AUTHORIZED)) 2455 continue; 2456 2457 ht_dbg(sdata, "Sending SMPS to %pM\n", sta->sta.addr); 2458 ieee80211_send_smps_action(sdata, smps_mode, 2459 sta->sta.addr, 2460 sdata->vif.bss_conf.bssid); 2461 } 2462 } 2463 mutex_unlock(&sdata->local->sta_mtx); 2464 2465 sdata->smps_mode = smps_mode; 2466 ieee80211_queue_work(&sdata->local->hw, &sdata->recalc_smps); 2467 2468 return 0; 2469 } 2470 2471 int __ieee80211_request_smps_mgd(struct ieee80211_sub_if_data *sdata, 2472 enum ieee80211_smps_mode smps_mode) 2473 { 2474 const u8 *ap; 2475 enum ieee80211_smps_mode old_req; 2476 int err; 2477 2478 lockdep_assert_held(&sdata->wdev.mtx); 2479 2480 if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_STATION)) 2481 return -EINVAL; 2482 2483 old_req = sdata->u.mgd.req_smps; 2484 sdata->u.mgd.req_smps = smps_mode; 2485 2486 if (old_req == smps_mode && 2487 smps_mode != IEEE80211_SMPS_AUTOMATIC) 2488 return 0; 2489 2490 /* 2491 * If not associated, or current association is not an HT 2492 * association, there's no need to do anything, just store 2493 * the new value until we associate. 2494 */ 2495 if (!sdata->u.mgd.associated || 2496 sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_20_NOHT) 2497 return 0; 2498 2499 ap = sdata->u.mgd.associated->bssid; 2500 2501 if (smps_mode == IEEE80211_SMPS_AUTOMATIC) { 2502 if (sdata->u.mgd.powersave) 2503 smps_mode = IEEE80211_SMPS_DYNAMIC; 2504 else 2505 smps_mode = IEEE80211_SMPS_OFF; 2506 } 2507 2508 /* send SM PS frame to AP */ 2509 err = ieee80211_send_smps_action(sdata, smps_mode, 2510 ap, ap); 2511 if (err) 2512 sdata->u.mgd.req_smps = old_req; 2513 2514 return err; 2515 } 2516 2517 static int ieee80211_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev, 2518 bool enabled, int timeout) 2519 { 2520 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2521 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); 2522 2523 if (sdata->vif.type != NL80211_IFTYPE_STATION) 2524 return -EOPNOTSUPP; 2525 2526 if (!(local->hw.flags & IEEE80211_HW_SUPPORTS_PS)) 2527 return -EOPNOTSUPP; 2528 2529 if (enabled == sdata->u.mgd.powersave && 2530 timeout == local->dynamic_ps_forced_timeout) 2531 return 0; 2532 2533 sdata->u.mgd.powersave = enabled; 2534 local->dynamic_ps_forced_timeout = timeout; 2535 2536 /* no change, but if automatic follow powersave */ 2537 sdata_lock(sdata); 2538 __ieee80211_request_smps_mgd(sdata, sdata->u.mgd.req_smps); 2539 sdata_unlock(sdata); 2540 2541 if (local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_PS) 2542 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS); 2543 2544 ieee80211_recalc_ps(local, -1); 2545 ieee80211_recalc_ps_vif(sdata); 2546 2547 return 0; 2548 } 2549 2550 static int ieee80211_set_cqm_rssi_config(struct wiphy *wiphy, 2551 struct net_device *dev, 2552 s32 rssi_thold, u32 rssi_hyst) 2553 { 2554 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2555 struct ieee80211_vif *vif = &sdata->vif; 2556 struct ieee80211_bss_conf *bss_conf = &vif->bss_conf; 2557 2558 if (rssi_thold == bss_conf->cqm_rssi_thold && 2559 rssi_hyst == bss_conf->cqm_rssi_hyst) 2560 return 0; 2561 2562 bss_conf->cqm_rssi_thold = rssi_thold; 2563 bss_conf->cqm_rssi_hyst = rssi_hyst; 2564 2565 /* tell the driver upon association, unless already associated */ 2566 if (sdata->u.mgd.associated && 2567 sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI) 2568 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_CQM); 2569 2570 return 0; 2571 } 2572 2573 static int ieee80211_set_bitrate_mask(struct wiphy *wiphy, 2574 struct net_device *dev, 2575 const u8 *addr, 2576 const struct cfg80211_bitrate_mask *mask) 2577 { 2578 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2579 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); 2580 int i, ret; 2581 2582 if (!ieee80211_sdata_running(sdata)) 2583 return -ENETDOWN; 2584 2585 if (local->hw.flags & IEEE80211_HW_HAS_RATE_CONTROL) { 2586 ret = drv_set_bitrate_mask(local, sdata, mask); 2587 if (ret) 2588 return ret; 2589 } 2590 2591 for (i = 0; i < IEEE80211_NUM_BANDS; i++) { 2592 struct ieee80211_supported_band *sband = wiphy->bands[i]; 2593 int j; 2594 2595 sdata->rc_rateidx_mask[i] = mask->control[i].legacy; 2596 memcpy(sdata->rc_rateidx_mcs_mask[i], mask->control[i].ht_mcs, 2597 sizeof(mask->control[i].ht_mcs)); 2598 2599 sdata->rc_has_mcs_mask[i] = false; 2600 if (!sband) 2601 continue; 2602 2603 for (j = 0; j < IEEE80211_HT_MCS_MASK_LEN; j++) 2604 if (~sdata->rc_rateidx_mcs_mask[i][j]) { 2605 sdata->rc_has_mcs_mask[i] = true; 2606 break; 2607 } 2608 } 2609 2610 return 0; 2611 } 2612 2613 static int ieee80211_start_roc_work(struct ieee80211_local *local, 2614 struct ieee80211_sub_if_data *sdata, 2615 struct ieee80211_channel *channel, 2616 unsigned int duration, u64 *cookie, 2617 struct sk_buff *txskb, 2618 enum ieee80211_roc_type type) 2619 { 2620 struct ieee80211_roc_work *roc, *tmp; 2621 bool queued = false; 2622 int ret; 2623 2624 lockdep_assert_held(&local->mtx); 2625 2626 if (local->use_chanctx && !local->ops->remain_on_channel) 2627 return -EOPNOTSUPP; 2628 2629 roc = kzalloc(sizeof(*roc), GFP_KERNEL); 2630 if (!roc) 2631 return -ENOMEM; 2632 2633 roc->chan = channel; 2634 roc->duration = duration; 2635 roc->req_duration = duration; 2636 roc->frame = txskb; 2637 roc->type = type; 2638 roc->mgmt_tx_cookie = (unsigned long)txskb; 2639 roc->sdata = sdata; 2640 INIT_DELAYED_WORK(&roc->work, ieee80211_sw_roc_work); 2641 INIT_LIST_HEAD(&roc->dependents); 2642 2643 /* 2644 * cookie is either the roc cookie (for normal roc) 2645 * or the SKB (for mgmt TX) 2646 */ 2647 if (!txskb) { 2648 /* local->mtx protects this */ 2649 local->roc_cookie_counter++; 2650 roc->cookie = local->roc_cookie_counter; 2651 /* wow, you wrapped 64 bits ... more likely a bug */ 2652 if (WARN_ON(roc->cookie == 0)) { 2653 roc->cookie = 1; 2654 local->roc_cookie_counter++; 2655 } 2656 *cookie = roc->cookie; 2657 } else { 2658 *cookie = (unsigned long)txskb; 2659 } 2660 2661 /* if there's one pending or we're scanning, queue this one */ 2662 if (!list_empty(&local->roc_list) || 2663 local->scanning || local->radar_detect_enabled) 2664 goto out_check_combine; 2665 2666 /* if not HW assist, just queue & schedule work */ 2667 if (!local->ops->remain_on_channel) { 2668 ieee80211_queue_delayed_work(&local->hw, &roc->work, 0); 2669 goto out_queue; 2670 } 2671 2672 /* otherwise actually kick it off here (for error handling) */ 2673 2674 /* 2675 * If the duration is zero, then the driver 2676 * wouldn't actually do anything. Set it to 2677 * 10 for now. 2678 * 2679 * TODO: cancel the off-channel operation 2680 * when we get the SKB's TX status and 2681 * the wait time was zero before. 2682 */ 2683 if (!duration) 2684 duration = 10; 2685 2686 ret = drv_remain_on_channel(local, sdata, channel, duration, type); 2687 if (ret) { 2688 kfree(roc); 2689 return ret; 2690 } 2691 2692 roc->started = true; 2693 goto out_queue; 2694 2695 out_check_combine: 2696 list_for_each_entry(tmp, &local->roc_list, list) { 2697 if (tmp->chan != channel || tmp->sdata != sdata) 2698 continue; 2699 2700 /* 2701 * Extend this ROC if possible: 2702 * 2703 * If it hasn't started yet, just increase the duration 2704 * and add the new one to the list of dependents. 2705 * If the type of the new ROC has higher priority, modify the 2706 * type of the previous one to match that of the new one. 2707 */ 2708 if (!tmp->started) { 2709 list_add_tail(&roc->list, &tmp->dependents); 2710 tmp->duration = max(tmp->duration, roc->duration); 2711 tmp->type = max(tmp->type, roc->type); 2712 queued = true; 2713 break; 2714 } 2715 2716 /* If it has already started, it's more difficult ... */ 2717 if (local->ops->remain_on_channel) { 2718 unsigned long j = jiffies; 2719 2720 /* 2721 * In the offloaded ROC case, if it hasn't begun, add 2722 * this new one to the dependent list to be handled 2723 * when the master one begins. If it has begun, 2724 * check that there's still a minimum time left and 2725 * if so, start this one, transmitting the frame, but 2726 * add it to the list directly after this one with 2727 * a reduced time so we'll ask the driver to execute 2728 * it right after finishing the previous one, in the 2729 * hope that it'll also be executed right afterwards, 2730 * effectively extending the old one. 2731 * If there's no minimum time left, just add it to the 2732 * normal list. 2733 * TODO: the ROC type is ignored here, assuming that it 2734 * is better to immediately use the current ROC. 2735 */ 2736 if (!tmp->hw_begun) { 2737 list_add_tail(&roc->list, &tmp->dependents); 2738 queued = true; 2739 break; 2740 } 2741 2742 if (time_before(j + IEEE80211_ROC_MIN_LEFT, 2743 tmp->hw_start_time + 2744 msecs_to_jiffies(tmp->duration))) { 2745 int new_dur; 2746 2747 ieee80211_handle_roc_started(roc); 2748 2749 new_dur = roc->duration - 2750 jiffies_to_msecs(tmp->hw_start_time + 2751 msecs_to_jiffies( 2752 tmp->duration) - 2753 j); 2754 2755 if (new_dur > 0) { 2756 /* add right after tmp */ 2757 list_add(&roc->list, &tmp->list); 2758 } else { 2759 list_add_tail(&roc->list, 2760 &tmp->dependents); 2761 } 2762 queued = true; 2763 } 2764 } else if (del_timer_sync(&tmp->work.timer)) { 2765 unsigned long new_end; 2766 2767 /* 2768 * In the software ROC case, cancel the timer, if 2769 * that fails then the finish work is already 2770 * queued/pending and thus we queue the new ROC 2771 * normally, if that succeeds then we can extend 2772 * the timer duration and TX the frame (if any.) 2773 */ 2774 2775 list_add_tail(&roc->list, &tmp->dependents); 2776 queued = true; 2777 2778 new_end = jiffies + msecs_to_jiffies(roc->duration); 2779 2780 /* ok, it was started & we canceled timer */ 2781 if (time_after(new_end, tmp->work.timer.expires)) 2782 mod_timer(&tmp->work.timer, new_end); 2783 else 2784 add_timer(&tmp->work.timer); 2785 2786 ieee80211_handle_roc_started(roc); 2787 } 2788 break; 2789 } 2790 2791 out_queue: 2792 if (!queued) 2793 list_add_tail(&roc->list, &local->roc_list); 2794 2795 return 0; 2796 } 2797 2798 static int ieee80211_remain_on_channel(struct wiphy *wiphy, 2799 struct wireless_dev *wdev, 2800 struct ieee80211_channel *chan, 2801 unsigned int duration, 2802 u64 *cookie) 2803 { 2804 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 2805 struct ieee80211_local *local = sdata->local; 2806 int ret; 2807 2808 mutex_lock(&local->mtx); 2809 ret = ieee80211_start_roc_work(local, sdata, chan, 2810 duration, cookie, NULL, 2811 IEEE80211_ROC_TYPE_NORMAL); 2812 mutex_unlock(&local->mtx); 2813 2814 return ret; 2815 } 2816 2817 static int ieee80211_cancel_roc(struct ieee80211_local *local, 2818 u64 cookie, bool mgmt_tx) 2819 { 2820 struct ieee80211_roc_work *roc, *tmp, *found = NULL; 2821 int ret; 2822 2823 mutex_lock(&local->mtx); 2824 list_for_each_entry_safe(roc, tmp, &local->roc_list, list) { 2825 struct ieee80211_roc_work *dep, *tmp2; 2826 2827 list_for_each_entry_safe(dep, tmp2, &roc->dependents, list) { 2828 if (!mgmt_tx && dep->cookie != cookie) 2829 continue; 2830 else if (mgmt_tx && dep->mgmt_tx_cookie != cookie) 2831 continue; 2832 /* found dependent item -- just remove it */ 2833 list_del(&dep->list); 2834 mutex_unlock(&local->mtx); 2835 2836 ieee80211_roc_notify_destroy(dep, true); 2837 return 0; 2838 } 2839 2840 if (!mgmt_tx && roc->cookie != cookie) 2841 continue; 2842 else if (mgmt_tx && roc->mgmt_tx_cookie != cookie) 2843 continue; 2844 2845 found = roc; 2846 break; 2847 } 2848 2849 if (!found) { 2850 mutex_unlock(&local->mtx); 2851 return -ENOENT; 2852 } 2853 2854 /* 2855 * We found the item to cancel, so do that. Note that it 2856 * may have dependents, which we also cancel (and send 2857 * the expired signal for.) Not doing so would be quite 2858 * tricky here, but we may need to fix it later. 2859 */ 2860 2861 if (local->ops->remain_on_channel) { 2862 if (found->started) { 2863 ret = drv_cancel_remain_on_channel(local); 2864 if (WARN_ON_ONCE(ret)) { 2865 mutex_unlock(&local->mtx); 2866 return ret; 2867 } 2868 } 2869 2870 list_del(&found->list); 2871 2872 if (found->started) 2873 ieee80211_start_next_roc(local); 2874 mutex_unlock(&local->mtx); 2875 2876 ieee80211_roc_notify_destroy(found, true); 2877 } else { 2878 /* work may be pending so use it all the time */ 2879 found->abort = true; 2880 ieee80211_queue_delayed_work(&local->hw, &found->work, 0); 2881 2882 mutex_unlock(&local->mtx); 2883 2884 /* work will clean up etc */ 2885 flush_delayed_work(&found->work); 2886 WARN_ON(!found->to_be_freed); 2887 kfree(found); 2888 } 2889 2890 return 0; 2891 } 2892 2893 static int ieee80211_cancel_remain_on_channel(struct wiphy *wiphy, 2894 struct wireless_dev *wdev, 2895 u64 cookie) 2896 { 2897 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 2898 struct ieee80211_local *local = sdata->local; 2899 2900 return ieee80211_cancel_roc(local, cookie, false); 2901 } 2902 2903 static int ieee80211_start_radar_detection(struct wiphy *wiphy, 2904 struct net_device *dev, 2905 struct cfg80211_chan_def *chandef) 2906 { 2907 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2908 struct ieee80211_local *local = sdata->local; 2909 unsigned long timeout; 2910 int err; 2911 2912 mutex_lock(&local->mtx); 2913 if (!list_empty(&local->roc_list) || local->scanning) { 2914 err = -EBUSY; 2915 goto out_unlock; 2916 } 2917 2918 /* whatever, but channel contexts should not complain about that one */ 2919 sdata->smps_mode = IEEE80211_SMPS_OFF; 2920 sdata->needed_rx_chains = local->rx_chains; 2921 sdata->radar_required = true; 2922 2923 err = ieee80211_vif_use_channel(sdata, chandef, 2924 IEEE80211_CHANCTX_SHARED); 2925 if (err) 2926 goto out_unlock; 2927 2928 timeout = msecs_to_jiffies(IEEE80211_DFS_MIN_CAC_TIME_MS); 2929 ieee80211_queue_delayed_work(&sdata->local->hw, 2930 &sdata->dfs_cac_timer_work, timeout); 2931 2932 out_unlock: 2933 mutex_unlock(&local->mtx); 2934 return err; 2935 } 2936 2937 static struct cfg80211_beacon_data * 2938 cfg80211_beacon_dup(struct cfg80211_beacon_data *beacon) 2939 { 2940 struct cfg80211_beacon_data *new_beacon; 2941 u8 *pos; 2942 int len; 2943 2944 len = beacon->head_len + beacon->tail_len + beacon->beacon_ies_len + 2945 beacon->proberesp_ies_len + beacon->assocresp_ies_len + 2946 beacon->probe_resp_len; 2947 2948 new_beacon = kzalloc(sizeof(*new_beacon) + len, GFP_KERNEL); 2949 if (!new_beacon) 2950 return NULL; 2951 2952 pos = (u8 *)(new_beacon + 1); 2953 if (beacon->head_len) { 2954 new_beacon->head_len = beacon->head_len; 2955 new_beacon->head = pos; 2956 memcpy(pos, beacon->head, beacon->head_len); 2957 pos += beacon->head_len; 2958 } 2959 if (beacon->tail_len) { 2960 new_beacon->tail_len = beacon->tail_len; 2961 new_beacon->tail = pos; 2962 memcpy(pos, beacon->tail, beacon->tail_len); 2963 pos += beacon->tail_len; 2964 } 2965 if (beacon->beacon_ies_len) { 2966 new_beacon->beacon_ies_len = beacon->beacon_ies_len; 2967 new_beacon->beacon_ies = pos; 2968 memcpy(pos, beacon->beacon_ies, beacon->beacon_ies_len); 2969 pos += beacon->beacon_ies_len; 2970 } 2971 if (beacon->proberesp_ies_len) { 2972 new_beacon->proberesp_ies_len = beacon->proberesp_ies_len; 2973 new_beacon->proberesp_ies = pos; 2974 memcpy(pos, beacon->proberesp_ies, beacon->proberesp_ies_len); 2975 pos += beacon->proberesp_ies_len; 2976 } 2977 if (beacon->assocresp_ies_len) { 2978 new_beacon->assocresp_ies_len = beacon->assocresp_ies_len; 2979 new_beacon->assocresp_ies = pos; 2980 memcpy(pos, beacon->assocresp_ies, beacon->assocresp_ies_len); 2981 pos += beacon->assocresp_ies_len; 2982 } 2983 if (beacon->probe_resp_len) { 2984 new_beacon->probe_resp_len = beacon->probe_resp_len; 2985 beacon->probe_resp = pos; 2986 memcpy(pos, beacon->probe_resp, beacon->probe_resp_len); 2987 pos += beacon->probe_resp_len; 2988 } 2989 2990 return new_beacon; 2991 } 2992 2993 void ieee80211_csa_finalize_work(struct work_struct *work) 2994 { 2995 struct ieee80211_sub_if_data *sdata = 2996 container_of(work, struct ieee80211_sub_if_data, 2997 csa_finalize_work); 2998 struct ieee80211_local *local = sdata->local; 2999 int err, changed = 0; 3000 3001 sdata_lock(sdata); 3002 /* AP might have been stopped while waiting for the lock. */ 3003 if (!sdata->vif.csa_active) 3004 goto unlock; 3005 3006 if (!ieee80211_sdata_running(sdata)) 3007 goto unlock; 3008 3009 sdata->radar_required = sdata->csa_radar_required; 3010 mutex_lock(&local->mtx); 3011 err = ieee80211_vif_change_channel(sdata, &changed); 3012 mutex_unlock(&local->mtx); 3013 if (WARN_ON(err < 0)) 3014 goto unlock; 3015 3016 if (!local->use_chanctx) { 3017 local->_oper_chandef = sdata->csa_chandef; 3018 ieee80211_hw_config(local, 0); 3019 } 3020 3021 ieee80211_bss_info_change_notify(sdata, changed); 3022 3023 sdata->vif.csa_active = false; 3024 switch (sdata->vif.type) { 3025 case NL80211_IFTYPE_AP: 3026 err = ieee80211_assign_beacon(sdata, sdata->u.ap.next_beacon); 3027 if (err < 0) 3028 goto unlock; 3029 3030 changed |= err; 3031 kfree(sdata->u.ap.next_beacon); 3032 sdata->u.ap.next_beacon = NULL; 3033 3034 ieee80211_bss_info_change_notify(sdata, err); 3035 break; 3036 case NL80211_IFTYPE_ADHOC: 3037 ieee80211_ibss_finish_csa(sdata); 3038 break; 3039 #ifdef CONFIG_MAC80211_MESH 3040 case NL80211_IFTYPE_MESH_POINT: 3041 err = ieee80211_mesh_finish_csa(sdata); 3042 if (err < 0) 3043 goto unlock; 3044 break; 3045 #endif 3046 default: 3047 WARN_ON(1); 3048 goto unlock; 3049 } 3050 3051 ieee80211_wake_queues_by_reason(&sdata->local->hw, 3052 IEEE80211_MAX_QUEUE_MAP, 3053 IEEE80211_QUEUE_STOP_REASON_CSA); 3054 3055 cfg80211_ch_switch_notify(sdata->dev, &sdata->csa_chandef); 3056 3057 unlock: 3058 sdata_unlock(sdata); 3059 } 3060 3061 int ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev, 3062 struct cfg80211_csa_settings *params) 3063 { 3064 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 3065 struct ieee80211_local *local = sdata->local; 3066 struct ieee80211_chanctx_conf *chanctx_conf; 3067 struct ieee80211_chanctx *chanctx; 3068 struct ieee80211_if_mesh __maybe_unused *ifmsh; 3069 int err, num_chanctx; 3070 3071 lockdep_assert_held(&sdata->wdev.mtx); 3072 3073 if (!list_empty(&local->roc_list) || local->scanning) 3074 return -EBUSY; 3075 3076 if (sdata->wdev.cac_started) 3077 return -EBUSY; 3078 3079 if (cfg80211_chandef_identical(¶ms->chandef, 3080 &sdata->vif.bss_conf.chandef)) 3081 return -EINVAL; 3082 3083 rcu_read_lock(); 3084 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); 3085 if (!chanctx_conf) { 3086 rcu_read_unlock(); 3087 return -EBUSY; 3088 } 3089 3090 /* don't handle for multi-VIF cases */ 3091 chanctx = container_of(chanctx_conf, struct ieee80211_chanctx, conf); 3092 if (chanctx->refcount > 1) { 3093 rcu_read_unlock(); 3094 return -EBUSY; 3095 } 3096 num_chanctx = 0; 3097 list_for_each_entry_rcu(chanctx, &local->chanctx_list, list) 3098 num_chanctx++; 3099 rcu_read_unlock(); 3100 3101 if (num_chanctx > 1) 3102 return -EBUSY; 3103 3104 /* don't allow another channel switch if one is already active. */ 3105 if (sdata->vif.csa_active) 3106 return -EBUSY; 3107 3108 switch (sdata->vif.type) { 3109 case NL80211_IFTYPE_AP: 3110 sdata->csa_counter_offset_beacon = 3111 params->counter_offset_beacon; 3112 sdata->csa_counter_offset_presp = params->counter_offset_presp; 3113 sdata->u.ap.next_beacon = 3114 cfg80211_beacon_dup(¶ms->beacon_after); 3115 if (!sdata->u.ap.next_beacon) 3116 return -ENOMEM; 3117 3118 err = ieee80211_assign_beacon(sdata, ¶ms->beacon_csa); 3119 if (err < 0) { 3120 kfree(sdata->u.ap.next_beacon); 3121 return err; 3122 } 3123 break; 3124 case NL80211_IFTYPE_ADHOC: 3125 if (!sdata->vif.bss_conf.ibss_joined) 3126 return -EINVAL; 3127 3128 if (params->chandef.width != sdata->u.ibss.chandef.width) 3129 return -EINVAL; 3130 3131 switch (params->chandef.width) { 3132 case NL80211_CHAN_WIDTH_40: 3133 if (cfg80211_get_chandef_type(¶ms->chandef) != 3134 cfg80211_get_chandef_type(&sdata->u.ibss.chandef)) 3135 return -EINVAL; 3136 case NL80211_CHAN_WIDTH_5: 3137 case NL80211_CHAN_WIDTH_10: 3138 case NL80211_CHAN_WIDTH_20_NOHT: 3139 case NL80211_CHAN_WIDTH_20: 3140 break; 3141 default: 3142 return -EINVAL; 3143 } 3144 3145 /* changes into another band are not supported */ 3146 if (sdata->u.ibss.chandef.chan->band != 3147 params->chandef.chan->band) 3148 return -EINVAL; 3149 3150 err = ieee80211_ibss_csa_beacon(sdata, params); 3151 if (err < 0) 3152 return err; 3153 break; 3154 #ifdef CONFIG_MAC80211_MESH 3155 case NL80211_IFTYPE_MESH_POINT: 3156 ifmsh = &sdata->u.mesh; 3157 3158 if (!ifmsh->mesh_id) 3159 return -EINVAL; 3160 3161 if (params->chandef.width != sdata->vif.bss_conf.chandef.width) 3162 return -EINVAL; 3163 3164 /* changes into another band are not supported */ 3165 if (sdata->vif.bss_conf.chandef.chan->band != 3166 params->chandef.chan->band) 3167 return -EINVAL; 3168 3169 ifmsh->chsw_init = true; 3170 if (!ifmsh->pre_value) 3171 ifmsh->pre_value = 1; 3172 else 3173 ifmsh->pre_value++; 3174 3175 err = ieee80211_mesh_csa_beacon(sdata, params, true); 3176 if (err < 0) { 3177 ifmsh->chsw_init = false; 3178 return err; 3179 } 3180 break; 3181 #endif 3182 default: 3183 return -EOPNOTSUPP; 3184 } 3185 3186 sdata->csa_radar_required = params->radar_required; 3187 3188 if (params->block_tx) 3189 ieee80211_stop_queues_by_reason(&local->hw, 3190 IEEE80211_MAX_QUEUE_MAP, 3191 IEEE80211_QUEUE_STOP_REASON_CSA); 3192 3193 sdata->csa_chandef = params->chandef; 3194 sdata->vif.csa_active = true; 3195 3196 ieee80211_bss_info_change_notify(sdata, err); 3197 drv_channel_switch_beacon(sdata, ¶ms->chandef); 3198 3199 return 0; 3200 } 3201 3202 static int ieee80211_mgmt_tx(struct wiphy *wiphy, struct wireless_dev *wdev, 3203 struct cfg80211_mgmt_tx_params *params, 3204 u64 *cookie) 3205 { 3206 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 3207 struct ieee80211_local *local = sdata->local; 3208 struct sk_buff *skb; 3209 struct sta_info *sta; 3210 const struct ieee80211_mgmt *mgmt = (void *)params->buf; 3211 bool need_offchan = false; 3212 u32 flags; 3213 int ret; 3214 3215 if (params->dont_wait_for_ack) 3216 flags = IEEE80211_TX_CTL_NO_ACK; 3217 else 3218 flags = IEEE80211_TX_INTFL_NL80211_FRAME_TX | 3219 IEEE80211_TX_CTL_REQ_TX_STATUS; 3220 3221 if (params->no_cck) 3222 flags |= IEEE80211_TX_CTL_NO_CCK_RATE; 3223 3224 switch (sdata->vif.type) { 3225 case NL80211_IFTYPE_ADHOC: 3226 if (!sdata->vif.bss_conf.ibss_joined) 3227 need_offchan = true; 3228 /* fall through */ 3229 #ifdef CONFIG_MAC80211_MESH 3230 case NL80211_IFTYPE_MESH_POINT: 3231 if (ieee80211_vif_is_mesh(&sdata->vif) && 3232 !sdata->u.mesh.mesh_id_len) 3233 need_offchan = true; 3234 /* fall through */ 3235 #endif 3236 case NL80211_IFTYPE_AP: 3237 case NL80211_IFTYPE_AP_VLAN: 3238 case NL80211_IFTYPE_P2P_GO: 3239 if (sdata->vif.type != NL80211_IFTYPE_ADHOC && 3240 !ieee80211_vif_is_mesh(&sdata->vif) && 3241 !rcu_access_pointer(sdata->bss->beacon)) 3242 need_offchan = true; 3243 if (!ieee80211_is_action(mgmt->frame_control) || 3244 mgmt->u.action.category == WLAN_CATEGORY_PUBLIC || 3245 mgmt->u.action.category == WLAN_CATEGORY_SELF_PROTECTED || 3246 mgmt->u.action.category == WLAN_CATEGORY_SPECTRUM_MGMT) 3247 break; 3248 rcu_read_lock(); 3249 sta = sta_info_get(sdata, mgmt->da); 3250 rcu_read_unlock(); 3251 if (!sta) 3252 return -ENOLINK; 3253 break; 3254 case NL80211_IFTYPE_STATION: 3255 case NL80211_IFTYPE_P2P_CLIENT: 3256 if (!sdata->u.mgd.associated) 3257 need_offchan = true; 3258 break; 3259 case NL80211_IFTYPE_P2P_DEVICE: 3260 need_offchan = true; 3261 break; 3262 default: 3263 return -EOPNOTSUPP; 3264 } 3265 3266 /* configurations requiring offchan cannot work if no channel has been 3267 * specified 3268 */ 3269 if (need_offchan && !params->chan) 3270 return -EINVAL; 3271 3272 mutex_lock(&local->mtx); 3273 3274 /* Check if the operating channel is the requested channel */ 3275 if (!need_offchan) { 3276 struct ieee80211_chanctx_conf *chanctx_conf; 3277 3278 rcu_read_lock(); 3279 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); 3280 3281 if (chanctx_conf) { 3282 need_offchan = params->chan && 3283 (params->chan != 3284 chanctx_conf->def.chan); 3285 } else if (!params->chan) { 3286 ret = -EINVAL; 3287 rcu_read_unlock(); 3288 goto out_unlock; 3289 } else { 3290 need_offchan = true; 3291 } 3292 rcu_read_unlock(); 3293 } 3294 3295 if (need_offchan && !params->offchan) { 3296 ret = -EBUSY; 3297 goto out_unlock; 3298 } 3299 3300 skb = dev_alloc_skb(local->hw.extra_tx_headroom + params->len); 3301 if (!skb) { 3302 ret = -ENOMEM; 3303 goto out_unlock; 3304 } 3305 skb_reserve(skb, local->hw.extra_tx_headroom); 3306 3307 memcpy(skb_put(skb, params->len), params->buf, params->len); 3308 3309 IEEE80211_SKB_CB(skb)->flags = flags; 3310 3311 skb->dev = sdata->dev; 3312 3313 if (!need_offchan) { 3314 *cookie = (unsigned long) skb; 3315 ieee80211_tx_skb(sdata, skb); 3316 ret = 0; 3317 goto out_unlock; 3318 } 3319 3320 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_TX_OFFCHAN | 3321 IEEE80211_TX_INTFL_OFFCHAN_TX_OK; 3322 if (local->hw.flags & IEEE80211_HW_QUEUE_CONTROL) 3323 IEEE80211_SKB_CB(skb)->hw_queue = 3324 local->hw.offchannel_tx_hw_queue; 3325 3326 /* This will handle all kinds of coalescing and immediate TX */ 3327 ret = ieee80211_start_roc_work(local, sdata, params->chan, 3328 params->wait, cookie, skb, 3329 IEEE80211_ROC_TYPE_MGMT_TX); 3330 if (ret) 3331 kfree_skb(skb); 3332 out_unlock: 3333 mutex_unlock(&local->mtx); 3334 return ret; 3335 } 3336 3337 static int ieee80211_mgmt_tx_cancel_wait(struct wiphy *wiphy, 3338 struct wireless_dev *wdev, 3339 u64 cookie) 3340 { 3341 struct ieee80211_local *local = wiphy_priv(wiphy); 3342 3343 return ieee80211_cancel_roc(local, cookie, true); 3344 } 3345 3346 static void ieee80211_mgmt_frame_register(struct wiphy *wiphy, 3347 struct wireless_dev *wdev, 3348 u16 frame_type, bool reg) 3349 { 3350 struct ieee80211_local *local = wiphy_priv(wiphy); 3351 3352 switch (frame_type) { 3353 case IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_PROBE_REQ: 3354 if (reg) 3355 local->probe_req_reg++; 3356 else 3357 local->probe_req_reg--; 3358 3359 if (!local->open_count) 3360 break; 3361 3362 ieee80211_queue_work(&local->hw, &local->reconfig_filter); 3363 break; 3364 default: 3365 break; 3366 } 3367 } 3368 3369 static int ieee80211_set_antenna(struct wiphy *wiphy, u32 tx_ant, u32 rx_ant) 3370 { 3371 struct ieee80211_local *local = wiphy_priv(wiphy); 3372 3373 if (local->started) 3374 return -EOPNOTSUPP; 3375 3376 return drv_set_antenna(local, tx_ant, rx_ant); 3377 } 3378 3379 static int ieee80211_get_antenna(struct wiphy *wiphy, u32 *tx_ant, u32 *rx_ant) 3380 { 3381 struct ieee80211_local *local = wiphy_priv(wiphy); 3382 3383 return drv_get_antenna(local, tx_ant, rx_ant); 3384 } 3385 3386 static int ieee80211_set_ringparam(struct wiphy *wiphy, u32 tx, u32 rx) 3387 { 3388 struct ieee80211_local *local = wiphy_priv(wiphy); 3389 3390 return drv_set_ringparam(local, tx, rx); 3391 } 3392 3393 static void ieee80211_get_ringparam(struct wiphy *wiphy, 3394 u32 *tx, u32 *tx_max, u32 *rx, u32 *rx_max) 3395 { 3396 struct ieee80211_local *local = wiphy_priv(wiphy); 3397 3398 drv_get_ringparam(local, tx, tx_max, rx, rx_max); 3399 } 3400 3401 static int ieee80211_set_rekey_data(struct wiphy *wiphy, 3402 struct net_device *dev, 3403 struct cfg80211_gtk_rekey_data *data) 3404 { 3405 struct ieee80211_local *local = wiphy_priv(wiphy); 3406 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 3407 3408 if (!local->ops->set_rekey_data) 3409 return -EOPNOTSUPP; 3410 3411 drv_set_rekey_data(local, sdata, data); 3412 3413 return 0; 3414 } 3415 3416 static void ieee80211_tdls_add_ext_capab(struct sk_buff *skb) 3417 { 3418 u8 *pos = (void *)skb_put(skb, 7); 3419 3420 *pos++ = WLAN_EID_EXT_CAPABILITY; 3421 *pos++ = 5; /* len */ 3422 *pos++ = 0x0; 3423 *pos++ = 0x0; 3424 *pos++ = 0x0; 3425 *pos++ = 0x0; 3426 *pos++ = WLAN_EXT_CAPA5_TDLS_ENABLED; 3427 } 3428 3429 static u16 ieee80211_get_tdls_sta_capab(struct ieee80211_sub_if_data *sdata) 3430 { 3431 struct ieee80211_local *local = sdata->local; 3432 u16 capab; 3433 3434 capab = 0; 3435 if (ieee80211_get_sdata_band(sdata) != IEEE80211_BAND_2GHZ) 3436 return capab; 3437 3438 if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_SLOT_INCAPABLE)) 3439 capab |= WLAN_CAPABILITY_SHORT_SLOT_TIME; 3440 if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_PREAMBLE_INCAPABLE)) 3441 capab |= WLAN_CAPABILITY_SHORT_PREAMBLE; 3442 3443 return capab; 3444 } 3445 3446 static void ieee80211_tdls_add_link_ie(struct sk_buff *skb, u8 *src_addr, 3447 u8 *peer, u8 *bssid) 3448 { 3449 struct ieee80211_tdls_lnkie *lnkid; 3450 3451 lnkid = (void *)skb_put(skb, sizeof(struct ieee80211_tdls_lnkie)); 3452 3453 lnkid->ie_type = WLAN_EID_LINK_ID; 3454 lnkid->ie_len = sizeof(struct ieee80211_tdls_lnkie) - 2; 3455 3456 memcpy(lnkid->bssid, bssid, ETH_ALEN); 3457 memcpy(lnkid->init_sta, src_addr, ETH_ALEN); 3458 memcpy(lnkid->resp_sta, peer, ETH_ALEN); 3459 } 3460 3461 static int 3462 ieee80211_prep_tdls_encap_data(struct wiphy *wiphy, struct net_device *dev, 3463 u8 *peer, u8 action_code, u8 dialog_token, 3464 u16 status_code, struct sk_buff *skb) 3465 { 3466 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 3467 enum ieee80211_band band = ieee80211_get_sdata_band(sdata); 3468 struct ieee80211_tdls_data *tf; 3469 3470 tf = (void *)skb_put(skb, offsetof(struct ieee80211_tdls_data, u)); 3471 3472 memcpy(tf->da, peer, ETH_ALEN); 3473 memcpy(tf->sa, sdata->vif.addr, ETH_ALEN); 3474 tf->ether_type = cpu_to_be16(ETH_P_TDLS); 3475 tf->payload_type = WLAN_TDLS_SNAP_RFTYPE; 3476 3477 switch (action_code) { 3478 case WLAN_TDLS_SETUP_REQUEST: 3479 tf->category = WLAN_CATEGORY_TDLS; 3480 tf->action_code = WLAN_TDLS_SETUP_REQUEST; 3481 3482 skb_put(skb, sizeof(tf->u.setup_req)); 3483 tf->u.setup_req.dialog_token = dialog_token; 3484 tf->u.setup_req.capability = 3485 cpu_to_le16(ieee80211_get_tdls_sta_capab(sdata)); 3486 3487 ieee80211_add_srates_ie(sdata, skb, false, band); 3488 ieee80211_add_ext_srates_ie(sdata, skb, false, band); 3489 ieee80211_tdls_add_ext_capab(skb); 3490 break; 3491 case WLAN_TDLS_SETUP_RESPONSE: 3492 tf->category = WLAN_CATEGORY_TDLS; 3493 tf->action_code = WLAN_TDLS_SETUP_RESPONSE; 3494 3495 skb_put(skb, sizeof(tf->u.setup_resp)); 3496 tf->u.setup_resp.status_code = cpu_to_le16(status_code); 3497 tf->u.setup_resp.dialog_token = dialog_token; 3498 tf->u.setup_resp.capability = 3499 cpu_to_le16(ieee80211_get_tdls_sta_capab(sdata)); 3500 3501 ieee80211_add_srates_ie(sdata, skb, false, band); 3502 ieee80211_add_ext_srates_ie(sdata, skb, false, band); 3503 ieee80211_tdls_add_ext_capab(skb); 3504 break; 3505 case WLAN_TDLS_SETUP_CONFIRM: 3506 tf->category = WLAN_CATEGORY_TDLS; 3507 tf->action_code = WLAN_TDLS_SETUP_CONFIRM; 3508 3509 skb_put(skb, sizeof(tf->u.setup_cfm)); 3510 tf->u.setup_cfm.status_code = cpu_to_le16(status_code); 3511 tf->u.setup_cfm.dialog_token = dialog_token; 3512 break; 3513 case WLAN_TDLS_TEARDOWN: 3514 tf->category = WLAN_CATEGORY_TDLS; 3515 tf->action_code = WLAN_TDLS_TEARDOWN; 3516 3517 skb_put(skb, sizeof(tf->u.teardown)); 3518 tf->u.teardown.reason_code = cpu_to_le16(status_code); 3519 break; 3520 case WLAN_TDLS_DISCOVERY_REQUEST: 3521 tf->category = WLAN_CATEGORY_TDLS; 3522 tf->action_code = WLAN_TDLS_DISCOVERY_REQUEST; 3523 3524 skb_put(skb, sizeof(tf->u.discover_req)); 3525 tf->u.discover_req.dialog_token = dialog_token; 3526 break; 3527 default: 3528 return -EINVAL; 3529 } 3530 3531 return 0; 3532 } 3533 3534 static int 3535 ieee80211_prep_tdls_direct(struct wiphy *wiphy, struct net_device *dev, 3536 u8 *peer, u8 action_code, u8 dialog_token, 3537 u16 status_code, struct sk_buff *skb) 3538 { 3539 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 3540 enum ieee80211_band band = ieee80211_get_sdata_band(sdata); 3541 struct ieee80211_mgmt *mgmt; 3542 3543 mgmt = (void *)skb_put(skb, 24); 3544 memset(mgmt, 0, 24); 3545 memcpy(mgmt->da, peer, ETH_ALEN); 3546 memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN); 3547 memcpy(mgmt->bssid, sdata->u.mgd.bssid, ETH_ALEN); 3548 3549 mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | 3550 IEEE80211_STYPE_ACTION); 3551 3552 switch (action_code) { 3553 case WLAN_PUB_ACTION_TDLS_DISCOVER_RES: 3554 skb_put(skb, 1 + sizeof(mgmt->u.action.u.tdls_discover_resp)); 3555 mgmt->u.action.category = WLAN_CATEGORY_PUBLIC; 3556 mgmt->u.action.u.tdls_discover_resp.action_code = 3557 WLAN_PUB_ACTION_TDLS_DISCOVER_RES; 3558 mgmt->u.action.u.tdls_discover_resp.dialog_token = 3559 dialog_token; 3560 mgmt->u.action.u.tdls_discover_resp.capability = 3561 cpu_to_le16(ieee80211_get_tdls_sta_capab(sdata)); 3562 3563 ieee80211_add_srates_ie(sdata, skb, false, band); 3564 ieee80211_add_ext_srates_ie(sdata, skb, false, band); 3565 ieee80211_tdls_add_ext_capab(skb); 3566 break; 3567 default: 3568 return -EINVAL; 3569 } 3570 3571 return 0; 3572 } 3573 3574 static int ieee80211_tdls_mgmt(struct wiphy *wiphy, struct net_device *dev, 3575 u8 *peer, u8 action_code, u8 dialog_token, 3576 u16 status_code, const u8 *extra_ies, 3577 size_t extra_ies_len) 3578 { 3579 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 3580 struct ieee80211_local *local = sdata->local; 3581 struct sk_buff *skb = NULL; 3582 bool send_direct; 3583 int ret; 3584 3585 if (!(wiphy->flags & WIPHY_FLAG_SUPPORTS_TDLS)) 3586 return -ENOTSUPP; 3587 3588 /* make sure we are in managed mode, and associated */ 3589 if (sdata->vif.type != NL80211_IFTYPE_STATION || 3590 !sdata->u.mgd.associated) 3591 return -EINVAL; 3592 3593 tdls_dbg(sdata, "TDLS mgmt action %d peer %pM\n", 3594 action_code, peer); 3595 3596 skb = dev_alloc_skb(local->hw.extra_tx_headroom + 3597 max(sizeof(struct ieee80211_mgmt), 3598 sizeof(struct ieee80211_tdls_data)) + 3599 50 + /* supported rates */ 3600 7 + /* ext capab */ 3601 extra_ies_len + 3602 sizeof(struct ieee80211_tdls_lnkie)); 3603 if (!skb) 3604 return -ENOMEM; 3605 3606 skb_reserve(skb, local->hw.extra_tx_headroom); 3607 3608 switch (action_code) { 3609 case WLAN_TDLS_SETUP_REQUEST: 3610 case WLAN_TDLS_SETUP_RESPONSE: 3611 case WLAN_TDLS_SETUP_CONFIRM: 3612 case WLAN_TDLS_TEARDOWN: 3613 case WLAN_TDLS_DISCOVERY_REQUEST: 3614 ret = ieee80211_prep_tdls_encap_data(wiphy, dev, peer, 3615 action_code, dialog_token, 3616 status_code, skb); 3617 send_direct = false; 3618 break; 3619 case WLAN_PUB_ACTION_TDLS_DISCOVER_RES: 3620 ret = ieee80211_prep_tdls_direct(wiphy, dev, peer, action_code, 3621 dialog_token, status_code, 3622 skb); 3623 send_direct = true; 3624 break; 3625 default: 3626 ret = -ENOTSUPP; 3627 break; 3628 } 3629 3630 if (ret < 0) 3631 goto fail; 3632 3633 if (extra_ies_len) 3634 memcpy(skb_put(skb, extra_ies_len), extra_ies, extra_ies_len); 3635 3636 /* the TDLS link IE is always added last */ 3637 switch (action_code) { 3638 case WLAN_TDLS_SETUP_REQUEST: 3639 case WLAN_TDLS_SETUP_CONFIRM: 3640 case WLAN_TDLS_TEARDOWN: 3641 case WLAN_TDLS_DISCOVERY_REQUEST: 3642 /* we are the initiator */ 3643 ieee80211_tdls_add_link_ie(skb, sdata->vif.addr, peer, 3644 sdata->u.mgd.bssid); 3645 break; 3646 case WLAN_TDLS_SETUP_RESPONSE: 3647 case WLAN_PUB_ACTION_TDLS_DISCOVER_RES: 3648 /* we are the responder */ 3649 ieee80211_tdls_add_link_ie(skb, peer, sdata->vif.addr, 3650 sdata->u.mgd.bssid); 3651 break; 3652 default: 3653 ret = -ENOTSUPP; 3654 goto fail; 3655 } 3656 3657 if (send_direct) { 3658 ieee80211_tx_skb(sdata, skb); 3659 return 0; 3660 } 3661 3662 /* 3663 * According to 802.11z: Setup req/resp are sent in AC_BK, otherwise 3664 * we should default to AC_VI. 3665 */ 3666 switch (action_code) { 3667 case WLAN_TDLS_SETUP_REQUEST: 3668 case WLAN_TDLS_SETUP_RESPONSE: 3669 skb_set_queue_mapping(skb, IEEE80211_AC_BK); 3670 skb->priority = 2; 3671 break; 3672 default: 3673 skb_set_queue_mapping(skb, IEEE80211_AC_VI); 3674 skb->priority = 5; 3675 break; 3676 } 3677 3678 /* disable bottom halves when entering the Tx path */ 3679 local_bh_disable(); 3680 ret = ieee80211_subif_start_xmit(skb, dev); 3681 local_bh_enable(); 3682 3683 return ret; 3684 3685 fail: 3686 dev_kfree_skb(skb); 3687 return ret; 3688 } 3689 3690 static int ieee80211_tdls_oper(struct wiphy *wiphy, struct net_device *dev, 3691 u8 *peer, enum nl80211_tdls_operation oper) 3692 { 3693 struct sta_info *sta; 3694 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 3695 3696 if (!(wiphy->flags & WIPHY_FLAG_SUPPORTS_TDLS)) 3697 return -ENOTSUPP; 3698 3699 if (sdata->vif.type != NL80211_IFTYPE_STATION) 3700 return -EINVAL; 3701 3702 tdls_dbg(sdata, "TDLS oper %d peer %pM\n", oper, peer); 3703 3704 switch (oper) { 3705 case NL80211_TDLS_ENABLE_LINK: 3706 rcu_read_lock(); 3707 sta = sta_info_get(sdata, peer); 3708 if (!sta) { 3709 rcu_read_unlock(); 3710 return -ENOLINK; 3711 } 3712 3713 set_sta_flag(sta, WLAN_STA_TDLS_PEER_AUTH); 3714 rcu_read_unlock(); 3715 break; 3716 case NL80211_TDLS_DISABLE_LINK: 3717 return sta_info_destroy_addr(sdata, peer); 3718 case NL80211_TDLS_TEARDOWN: 3719 case NL80211_TDLS_SETUP: 3720 case NL80211_TDLS_DISCOVERY_REQ: 3721 /* We don't support in-driver setup/teardown/discovery */ 3722 return -ENOTSUPP; 3723 default: 3724 return -ENOTSUPP; 3725 } 3726 3727 return 0; 3728 } 3729 3730 static int ieee80211_probe_client(struct wiphy *wiphy, struct net_device *dev, 3731 const u8 *peer, u64 *cookie) 3732 { 3733 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 3734 struct ieee80211_local *local = sdata->local; 3735 struct ieee80211_qos_hdr *nullfunc; 3736 struct sk_buff *skb; 3737 int size = sizeof(*nullfunc); 3738 __le16 fc; 3739 bool qos; 3740 struct ieee80211_tx_info *info; 3741 struct sta_info *sta; 3742 struct ieee80211_chanctx_conf *chanctx_conf; 3743 enum ieee80211_band band; 3744 3745 rcu_read_lock(); 3746 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); 3747 if (WARN_ON(!chanctx_conf)) { 3748 rcu_read_unlock(); 3749 return -EINVAL; 3750 } 3751 band = chanctx_conf->def.chan->band; 3752 sta = sta_info_get_bss(sdata, peer); 3753 if (sta) { 3754 qos = test_sta_flag(sta, WLAN_STA_WME); 3755 } else { 3756 rcu_read_unlock(); 3757 return -ENOLINK; 3758 } 3759 3760 if (qos) { 3761 fc = cpu_to_le16(IEEE80211_FTYPE_DATA | 3762 IEEE80211_STYPE_QOS_NULLFUNC | 3763 IEEE80211_FCTL_FROMDS); 3764 } else { 3765 size -= 2; 3766 fc = cpu_to_le16(IEEE80211_FTYPE_DATA | 3767 IEEE80211_STYPE_NULLFUNC | 3768 IEEE80211_FCTL_FROMDS); 3769 } 3770 3771 skb = dev_alloc_skb(local->hw.extra_tx_headroom + size); 3772 if (!skb) { 3773 rcu_read_unlock(); 3774 return -ENOMEM; 3775 } 3776 3777 skb->dev = dev; 3778 3779 skb_reserve(skb, local->hw.extra_tx_headroom); 3780 3781 nullfunc = (void *) skb_put(skb, size); 3782 nullfunc->frame_control = fc; 3783 nullfunc->duration_id = 0; 3784 memcpy(nullfunc->addr1, sta->sta.addr, ETH_ALEN); 3785 memcpy(nullfunc->addr2, sdata->vif.addr, ETH_ALEN); 3786 memcpy(nullfunc->addr3, sdata->vif.addr, ETH_ALEN); 3787 nullfunc->seq_ctrl = 0; 3788 3789 info = IEEE80211_SKB_CB(skb); 3790 3791 info->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS | 3792 IEEE80211_TX_INTFL_NL80211_FRAME_TX; 3793 3794 skb_set_queue_mapping(skb, IEEE80211_AC_VO); 3795 skb->priority = 7; 3796 if (qos) 3797 nullfunc->qos_ctrl = cpu_to_le16(7); 3798 3799 local_bh_disable(); 3800 ieee80211_xmit(sdata, skb, band); 3801 local_bh_enable(); 3802 rcu_read_unlock(); 3803 3804 *cookie = (unsigned long) skb; 3805 return 0; 3806 } 3807 3808 static int ieee80211_cfg_get_channel(struct wiphy *wiphy, 3809 struct wireless_dev *wdev, 3810 struct cfg80211_chan_def *chandef) 3811 { 3812 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 3813 struct ieee80211_local *local = wiphy_priv(wiphy); 3814 struct ieee80211_chanctx_conf *chanctx_conf; 3815 int ret = -ENODATA; 3816 3817 rcu_read_lock(); 3818 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); 3819 if (chanctx_conf) { 3820 *chandef = chanctx_conf->def; 3821 ret = 0; 3822 } else if (local->open_count > 0 && 3823 local->open_count == local->monitors && 3824 sdata->vif.type == NL80211_IFTYPE_MONITOR) { 3825 if (local->use_chanctx) 3826 *chandef = local->monitor_chandef; 3827 else 3828 *chandef = local->_oper_chandef; 3829 ret = 0; 3830 } 3831 rcu_read_unlock(); 3832 3833 return ret; 3834 } 3835 3836 #ifdef CONFIG_PM 3837 static void ieee80211_set_wakeup(struct wiphy *wiphy, bool enabled) 3838 { 3839 drv_set_wakeup(wiphy_priv(wiphy), enabled); 3840 } 3841 #endif 3842 3843 static int ieee80211_set_qos_map(struct wiphy *wiphy, 3844 struct net_device *dev, 3845 struct cfg80211_qos_map *qos_map) 3846 { 3847 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 3848 struct mac80211_qos_map *new_qos_map, *old_qos_map; 3849 3850 if (qos_map) { 3851 new_qos_map = kzalloc(sizeof(*new_qos_map), GFP_KERNEL); 3852 if (!new_qos_map) 3853 return -ENOMEM; 3854 memcpy(&new_qos_map->qos_map, qos_map, sizeof(*qos_map)); 3855 } else { 3856 /* A NULL qos_map was passed to disable QoS mapping */ 3857 new_qos_map = NULL; 3858 } 3859 3860 old_qos_map = sdata_dereference(sdata->qos_map, sdata); 3861 rcu_assign_pointer(sdata->qos_map, new_qos_map); 3862 if (old_qos_map) 3863 kfree_rcu(old_qos_map, rcu_head); 3864 3865 return 0; 3866 } 3867 3868 struct cfg80211_ops mac80211_config_ops = { 3869 .add_virtual_intf = ieee80211_add_iface, 3870 .del_virtual_intf = ieee80211_del_iface, 3871 .change_virtual_intf = ieee80211_change_iface, 3872 .start_p2p_device = ieee80211_start_p2p_device, 3873 .stop_p2p_device = ieee80211_stop_p2p_device, 3874 .add_key = ieee80211_add_key, 3875 .del_key = ieee80211_del_key, 3876 .get_key = ieee80211_get_key, 3877 .set_default_key = ieee80211_config_default_key, 3878 .set_default_mgmt_key = ieee80211_config_default_mgmt_key, 3879 .start_ap = ieee80211_start_ap, 3880 .change_beacon = ieee80211_change_beacon, 3881 .stop_ap = ieee80211_stop_ap, 3882 .add_station = ieee80211_add_station, 3883 .del_station = ieee80211_del_station, 3884 .change_station = ieee80211_change_station, 3885 .get_station = ieee80211_get_station, 3886 .dump_station = ieee80211_dump_station, 3887 .dump_survey = ieee80211_dump_survey, 3888 #ifdef CONFIG_MAC80211_MESH 3889 .add_mpath = ieee80211_add_mpath, 3890 .del_mpath = ieee80211_del_mpath, 3891 .change_mpath = ieee80211_change_mpath, 3892 .get_mpath = ieee80211_get_mpath, 3893 .dump_mpath = ieee80211_dump_mpath, 3894 .update_mesh_config = ieee80211_update_mesh_config, 3895 .get_mesh_config = ieee80211_get_mesh_config, 3896 .join_mesh = ieee80211_join_mesh, 3897 .leave_mesh = ieee80211_leave_mesh, 3898 #endif 3899 .change_bss = ieee80211_change_bss, 3900 .set_txq_params = ieee80211_set_txq_params, 3901 .set_monitor_channel = ieee80211_set_monitor_channel, 3902 .suspend = ieee80211_suspend, 3903 .resume = ieee80211_resume, 3904 .scan = ieee80211_scan, 3905 .sched_scan_start = ieee80211_sched_scan_start, 3906 .sched_scan_stop = ieee80211_sched_scan_stop, 3907 .auth = ieee80211_auth, 3908 .assoc = ieee80211_assoc, 3909 .deauth = ieee80211_deauth, 3910 .disassoc = ieee80211_disassoc, 3911 .join_ibss = ieee80211_join_ibss, 3912 .leave_ibss = ieee80211_leave_ibss, 3913 .set_mcast_rate = ieee80211_set_mcast_rate, 3914 .set_wiphy_params = ieee80211_set_wiphy_params, 3915 .set_tx_power = ieee80211_set_tx_power, 3916 .get_tx_power = ieee80211_get_tx_power, 3917 .set_wds_peer = ieee80211_set_wds_peer, 3918 .rfkill_poll = ieee80211_rfkill_poll, 3919 CFG80211_TESTMODE_CMD(ieee80211_testmode_cmd) 3920 CFG80211_TESTMODE_DUMP(ieee80211_testmode_dump) 3921 .set_power_mgmt = ieee80211_set_power_mgmt, 3922 .set_bitrate_mask = ieee80211_set_bitrate_mask, 3923 .remain_on_channel = ieee80211_remain_on_channel, 3924 .cancel_remain_on_channel = ieee80211_cancel_remain_on_channel, 3925 .mgmt_tx = ieee80211_mgmt_tx, 3926 .mgmt_tx_cancel_wait = ieee80211_mgmt_tx_cancel_wait, 3927 .set_cqm_rssi_config = ieee80211_set_cqm_rssi_config, 3928 .mgmt_frame_register = ieee80211_mgmt_frame_register, 3929 .set_antenna = ieee80211_set_antenna, 3930 .get_antenna = ieee80211_get_antenna, 3931 .set_ringparam = ieee80211_set_ringparam, 3932 .get_ringparam = ieee80211_get_ringparam, 3933 .set_rekey_data = ieee80211_set_rekey_data, 3934 .tdls_oper = ieee80211_tdls_oper, 3935 .tdls_mgmt = ieee80211_tdls_mgmt, 3936 .probe_client = ieee80211_probe_client, 3937 .set_noack_map = ieee80211_set_noack_map, 3938 #ifdef CONFIG_PM 3939 .set_wakeup = ieee80211_set_wakeup, 3940 #endif 3941 .get_et_sset_count = ieee80211_get_et_sset_count, 3942 .get_et_stats = ieee80211_get_et_stats, 3943 .get_et_strings = ieee80211_get_et_strings, 3944 .get_channel = ieee80211_cfg_get_channel, 3945 .start_radar_detection = ieee80211_start_radar_detection, 3946 .channel_switch = ieee80211_channel_switch, 3947 .set_qos_map = ieee80211_set_qos_map, 3948 }; 3949