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 return err; 1026 changed |= err; 1027 1028 err = drv_start_ap(sdata->local, sdata); 1029 if (err) { 1030 old = sdata_dereference(sdata->u.ap.beacon, sdata); 1031 1032 if (old) 1033 kfree_rcu(old, rcu_head); 1034 RCU_INIT_POINTER(sdata->u.ap.beacon, NULL); 1035 return err; 1036 } 1037 1038 ieee80211_recalc_dtim(local, sdata); 1039 ieee80211_bss_info_change_notify(sdata, changed); 1040 1041 netif_carrier_on(dev); 1042 list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) 1043 netif_carrier_on(vlan->dev); 1044 1045 return 0; 1046 } 1047 1048 static int ieee80211_change_beacon(struct wiphy *wiphy, struct net_device *dev, 1049 struct cfg80211_beacon_data *params) 1050 { 1051 struct ieee80211_sub_if_data *sdata; 1052 struct beacon_data *old; 1053 int err; 1054 1055 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1056 1057 /* don't allow changing the beacon while CSA is in place - offset 1058 * of channel switch counter may change 1059 */ 1060 if (sdata->vif.csa_active) 1061 return -EBUSY; 1062 1063 old = sdata_dereference(sdata->u.ap.beacon, sdata); 1064 if (!old) 1065 return -ENOENT; 1066 1067 err = ieee80211_assign_beacon(sdata, params); 1068 if (err < 0) 1069 return err; 1070 ieee80211_bss_info_change_notify(sdata, err); 1071 return 0; 1072 } 1073 1074 static int ieee80211_stop_ap(struct wiphy *wiphy, struct net_device *dev) 1075 { 1076 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1077 struct ieee80211_sub_if_data *vlan; 1078 struct ieee80211_local *local = sdata->local; 1079 struct beacon_data *old_beacon; 1080 struct probe_resp *old_probe_resp; 1081 struct cfg80211_chan_def chandef; 1082 1083 old_beacon = sdata_dereference(sdata->u.ap.beacon, sdata); 1084 if (!old_beacon) 1085 return -ENOENT; 1086 old_probe_resp = sdata_dereference(sdata->u.ap.probe_resp, sdata); 1087 1088 /* abort any running channel switch */ 1089 sdata->vif.csa_active = false; 1090 kfree(sdata->u.ap.next_beacon); 1091 sdata->u.ap.next_beacon = NULL; 1092 1093 cancel_work_sync(&sdata->u.ap.request_smps_work); 1094 1095 /* turn off carrier for this interface and dependent VLANs */ 1096 list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) 1097 netif_carrier_off(vlan->dev); 1098 netif_carrier_off(dev); 1099 1100 /* remove beacon and probe response */ 1101 RCU_INIT_POINTER(sdata->u.ap.beacon, NULL); 1102 RCU_INIT_POINTER(sdata->u.ap.probe_resp, NULL); 1103 kfree_rcu(old_beacon, rcu_head); 1104 if (old_probe_resp) 1105 kfree_rcu(old_probe_resp, rcu_head); 1106 1107 __sta_info_flush(sdata, true); 1108 ieee80211_free_keys(sdata, true); 1109 1110 sdata->vif.bss_conf.enable_beacon = false; 1111 sdata->vif.bss_conf.ssid_len = 0; 1112 clear_bit(SDATA_STATE_OFFCHANNEL_BEACON_STOPPED, &sdata->state); 1113 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED); 1114 1115 if (sdata->wdev.cac_started) { 1116 chandef = sdata->vif.bss_conf.chandef; 1117 cancel_delayed_work_sync(&sdata->dfs_cac_timer_work); 1118 cfg80211_cac_event(sdata->dev, &chandef, 1119 NL80211_RADAR_CAC_ABORTED, 1120 GFP_KERNEL); 1121 } 1122 1123 drv_stop_ap(sdata->local, sdata); 1124 1125 /* free all potentially still buffered bcast frames */ 1126 local->total_ps_buffered -= skb_queue_len(&sdata->u.ap.ps.bc_buf); 1127 skb_queue_purge(&sdata->u.ap.ps.bc_buf); 1128 1129 ieee80211_vif_copy_chanctx_to_vlans(sdata, true); 1130 mutex_lock(&local->mtx); 1131 ieee80211_vif_release_channel(sdata); 1132 mutex_unlock(&local->mtx); 1133 1134 return 0; 1135 } 1136 1137 /* Layer 2 Update frame (802.2 Type 1 LLC XID Update response) */ 1138 struct iapp_layer2_update { 1139 u8 da[ETH_ALEN]; /* broadcast */ 1140 u8 sa[ETH_ALEN]; /* STA addr */ 1141 __be16 len; /* 6 */ 1142 u8 dsap; /* 0 */ 1143 u8 ssap; /* 0 */ 1144 u8 control; 1145 u8 xid_info[3]; 1146 } __packed; 1147 1148 static void ieee80211_send_layer2_update(struct sta_info *sta) 1149 { 1150 struct iapp_layer2_update *msg; 1151 struct sk_buff *skb; 1152 1153 /* Send Level 2 Update Frame to update forwarding tables in layer 2 1154 * bridge devices */ 1155 1156 skb = dev_alloc_skb(sizeof(*msg)); 1157 if (!skb) 1158 return; 1159 msg = (struct iapp_layer2_update *)skb_put(skb, sizeof(*msg)); 1160 1161 /* 802.2 Type 1 Logical Link Control (LLC) Exchange Identifier (XID) 1162 * Update response frame; IEEE Std 802.2-1998, 5.4.1.2.1 */ 1163 1164 eth_broadcast_addr(msg->da); 1165 memcpy(msg->sa, sta->sta.addr, ETH_ALEN); 1166 msg->len = htons(6); 1167 msg->dsap = 0; 1168 msg->ssap = 0x01; /* NULL LSAP, CR Bit: Response */ 1169 msg->control = 0xaf; /* XID response lsb.1111F101. 1170 * F=0 (no poll command; unsolicited frame) */ 1171 msg->xid_info[0] = 0x81; /* XID format identifier */ 1172 msg->xid_info[1] = 1; /* LLC types/classes: Type 1 LLC */ 1173 msg->xid_info[2] = 0; /* XID sender's receive window size (RW) */ 1174 1175 skb->dev = sta->sdata->dev; 1176 skb->protocol = eth_type_trans(skb, sta->sdata->dev); 1177 memset(skb->cb, 0, sizeof(skb->cb)); 1178 netif_rx_ni(skb); 1179 } 1180 1181 static int sta_apply_auth_flags(struct ieee80211_local *local, 1182 struct sta_info *sta, 1183 u32 mask, u32 set) 1184 { 1185 int ret; 1186 1187 if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED) && 1188 set & BIT(NL80211_STA_FLAG_AUTHENTICATED) && 1189 !test_sta_flag(sta, WLAN_STA_AUTH)) { 1190 ret = sta_info_move_state(sta, IEEE80211_STA_AUTH); 1191 if (ret) 1192 return ret; 1193 } 1194 1195 if (mask & BIT(NL80211_STA_FLAG_ASSOCIATED) && 1196 set & BIT(NL80211_STA_FLAG_ASSOCIATED) && 1197 !test_sta_flag(sta, WLAN_STA_ASSOC)) { 1198 ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC); 1199 if (ret) 1200 return ret; 1201 } 1202 1203 if (mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) { 1204 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED)) 1205 ret = sta_info_move_state(sta, IEEE80211_STA_AUTHORIZED); 1206 else if (test_sta_flag(sta, WLAN_STA_AUTHORIZED)) 1207 ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC); 1208 else 1209 ret = 0; 1210 if (ret) 1211 return ret; 1212 } 1213 1214 if (mask & BIT(NL80211_STA_FLAG_ASSOCIATED) && 1215 !(set & BIT(NL80211_STA_FLAG_ASSOCIATED)) && 1216 test_sta_flag(sta, WLAN_STA_ASSOC)) { 1217 ret = sta_info_move_state(sta, IEEE80211_STA_AUTH); 1218 if (ret) 1219 return ret; 1220 } 1221 1222 if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED) && 1223 !(set & BIT(NL80211_STA_FLAG_AUTHENTICATED)) && 1224 test_sta_flag(sta, WLAN_STA_AUTH)) { 1225 ret = sta_info_move_state(sta, IEEE80211_STA_NONE); 1226 if (ret) 1227 return ret; 1228 } 1229 1230 return 0; 1231 } 1232 1233 static int sta_apply_parameters(struct ieee80211_local *local, 1234 struct sta_info *sta, 1235 struct station_parameters *params) 1236 { 1237 int ret = 0; 1238 struct ieee80211_supported_band *sband; 1239 struct ieee80211_sub_if_data *sdata = sta->sdata; 1240 enum ieee80211_band band = ieee80211_get_sdata_band(sdata); 1241 u32 mask, set; 1242 1243 sband = local->hw.wiphy->bands[band]; 1244 1245 mask = params->sta_flags_mask; 1246 set = params->sta_flags_set; 1247 1248 if (ieee80211_vif_is_mesh(&sdata->vif)) { 1249 /* 1250 * In mesh mode, ASSOCIATED isn't part of the nl80211 1251 * API but must follow AUTHENTICATED for driver state. 1252 */ 1253 if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED)) 1254 mask |= BIT(NL80211_STA_FLAG_ASSOCIATED); 1255 if (set & BIT(NL80211_STA_FLAG_AUTHENTICATED)) 1256 set |= BIT(NL80211_STA_FLAG_ASSOCIATED); 1257 } else if (test_sta_flag(sta, WLAN_STA_TDLS_PEER)) { 1258 /* 1259 * TDLS -- everything follows authorized, but 1260 * only becoming authorized is possible, not 1261 * going back 1262 */ 1263 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED)) { 1264 set |= BIT(NL80211_STA_FLAG_AUTHENTICATED) | 1265 BIT(NL80211_STA_FLAG_ASSOCIATED); 1266 mask |= BIT(NL80211_STA_FLAG_AUTHENTICATED) | 1267 BIT(NL80211_STA_FLAG_ASSOCIATED); 1268 } 1269 } 1270 1271 ret = sta_apply_auth_flags(local, sta, mask, set); 1272 if (ret) 1273 return ret; 1274 1275 if (mask & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE)) { 1276 if (set & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE)) 1277 set_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE); 1278 else 1279 clear_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE); 1280 } 1281 1282 if (mask & BIT(NL80211_STA_FLAG_WME)) { 1283 if (set & BIT(NL80211_STA_FLAG_WME)) { 1284 set_sta_flag(sta, WLAN_STA_WME); 1285 sta->sta.wme = true; 1286 } else { 1287 clear_sta_flag(sta, WLAN_STA_WME); 1288 sta->sta.wme = false; 1289 } 1290 } 1291 1292 if (mask & BIT(NL80211_STA_FLAG_MFP)) { 1293 if (set & BIT(NL80211_STA_FLAG_MFP)) 1294 set_sta_flag(sta, WLAN_STA_MFP); 1295 else 1296 clear_sta_flag(sta, WLAN_STA_MFP); 1297 } 1298 1299 if (mask & BIT(NL80211_STA_FLAG_TDLS_PEER)) { 1300 if (set & BIT(NL80211_STA_FLAG_TDLS_PEER)) 1301 set_sta_flag(sta, WLAN_STA_TDLS_PEER); 1302 else 1303 clear_sta_flag(sta, WLAN_STA_TDLS_PEER); 1304 } 1305 1306 if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD) { 1307 sta->sta.uapsd_queues = params->uapsd_queues; 1308 sta->sta.max_sp = params->max_sp; 1309 } 1310 1311 /* 1312 * cfg80211 validates this (1-2007) and allows setting the AID 1313 * only when creating a new station entry 1314 */ 1315 if (params->aid) 1316 sta->sta.aid = params->aid; 1317 1318 /* 1319 * Some of the following updates would be racy if called on an 1320 * existing station, via ieee80211_change_station(). However, 1321 * all such changes are rejected by cfg80211 except for updates 1322 * changing the supported rates on an existing but not yet used 1323 * TDLS peer. 1324 */ 1325 1326 if (params->listen_interval >= 0) 1327 sta->listen_interval = params->listen_interval; 1328 1329 if (params->supported_rates) { 1330 ieee80211_parse_bitrates(&sdata->vif.bss_conf.chandef, 1331 sband, params->supported_rates, 1332 params->supported_rates_len, 1333 &sta->sta.supp_rates[band]); 1334 } 1335 1336 if (params->ht_capa) 1337 ieee80211_ht_cap_ie_to_sta_ht_cap(sdata, sband, 1338 params->ht_capa, sta); 1339 1340 if (params->vht_capa) 1341 ieee80211_vht_cap_ie_to_sta_vht_cap(sdata, sband, 1342 params->vht_capa, sta); 1343 1344 if (ieee80211_vif_is_mesh(&sdata->vif)) { 1345 #ifdef CONFIG_MAC80211_MESH 1346 u32 changed = 0; 1347 1348 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE) { 1349 switch (params->plink_state) { 1350 case NL80211_PLINK_ESTAB: 1351 if (sta->plink_state != NL80211_PLINK_ESTAB) 1352 changed = mesh_plink_inc_estab_count( 1353 sdata); 1354 sta->plink_state = params->plink_state; 1355 1356 ieee80211_mps_sta_status_update(sta); 1357 changed |= ieee80211_mps_set_sta_local_pm(sta, 1358 sdata->u.mesh.mshcfg.power_mode); 1359 break; 1360 case NL80211_PLINK_LISTEN: 1361 case NL80211_PLINK_BLOCKED: 1362 case NL80211_PLINK_OPN_SNT: 1363 case NL80211_PLINK_OPN_RCVD: 1364 case NL80211_PLINK_CNF_RCVD: 1365 case NL80211_PLINK_HOLDING: 1366 if (sta->plink_state == NL80211_PLINK_ESTAB) 1367 changed = mesh_plink_dec_estab_count( 1368 sdata); 1369 sta->plink_state = params->plink_state; 1370 1371 ieee80211_mps_sta_status_update(sta); 1372 changed |= ieee80211_mps_set_sta_local_pm(sta, 1373 NL80211_MESH_POWER_UNKNOWN); 1374 break; 1375 default: 1376 /* nothing */ 1377 break; 1378 } 1379 } 1380 1381 switch (params->plink_action) { 1382 case NL80211_PLINK_ACTION_NO_ACTION: 1383 /* nothing */ 1384 break; 1385 case NL80211_PLINK_ACTION_OPEN: 1386 changed |= mesh_plink_open(sta); 1387 break; 1388 case NL80211_PLINK_ACTION_BLOCK: 1389 changed |= mesh_plink_block(sta); 1390 break; 1391 } 1392 1393 if (params->local_pm) 1394 changed |= 1395 ieee80211_mps_set_sta_local_pm(sta, 1396 params->local_pm); 1397 ieee80211_mbss_info_change_notify(sdata, changed); 1398 #endif 1399 } 1400 1401 return 0; 1402 } 1403 1404 static int ieee80211_add_station(struct wiphy *wiphy, struct net_device *dev, 1405 u8 *mac, struct station_parameters *params) 1406 { 1407 struct ieee80211_local *local = wiphy_priv(wiphy); 1408 struct sta_info *sta; 1409 struct ieee80211_sub_if_data *sdata; 1410 int err; 1411 int layer2_update; 1412 1413 if (params->vlan) { 1414 sdata = IEEE80211_DEV_TO_SUB_IF(params->vlan); 1415 1416 if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN && 1417 sdata->vif.type != NL80211_IFTYPE_AP) 1418 return -EINVAL; 1419 } else 1420 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1421 1422 if (ether_addr_equal(mac, sdata->vif.addr)) 1423 return -EINVAL; 1424 1425 if (is_multicast_ether_addr(mac)) 1426 return -EINVAL; 1427 1428 sta = sta_info_alloc(sdata, mac, GFP_KERNEL); 1429 if (!sta) 1430 return -ENOMEM; 1431 1432 /* 1433 * defaults -- if userspace wants something else we'll 1434 * change it accordingly in sta_apply_parameters() 1435 */ 1436 if (!(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))) { 1437 sta_info_pre_move_state(sta, IEEE80211_STA_AUTH); 1438 sta_info_pre_move_state(sta, IEEE80211_STA_ASSOC); 1439 } 1440 1441 err = sta_apply_parameters(local, sta, params); 1442 if (err) { 1443 sta_info_free(local, sta); 1444 return err; 1445 } 1446 1447 /* 1448 * for TDLS, rate control should be initialized only when 1449 * rates are known and station is marked authorized 1450 */ 1451 if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER)) 1452 rate_control_rate_init(sta); 1453 1454 layer2_update = sdata->vif.type == NL80211_IFTYPE_AP_VLAN || 1455 sdata->vif.type == NL80211_IFTYPE_AP; 1456 1457 err = sta_info_insert_rcu(sta); 1458 if (err) { 1459 rcu_read_unlock(); 1460 return err; 1461 } 1462 1463 if (layer2_update) 1464 ieee80211_send_layer2_update(sta); 1465 1466 rcu_read_unlock(); 1467 1468 return 0; 1469 } 1470 1471 static int ieee80211_del_station(struct wiphy *wiphy, struct net_device *dev, 1472 u8 *mac) 1473 { 1474 struct ieee80211_sub_if_data *sdata; 1475 1476 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1477 1478 if (mac) 1479 return sta_info_destroy_addr_bss(sdata, mac); 1480 1481 sta_info_flush(sdata); 1482 return 0; 1483 } 1484 1485 static int ieee80211_change_station(struct wiphy *wiphy, 1486 struct net_device *dev, u8 *mac, 1487 struct station_parameters *params) 1488 { 1489 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1490 struct ieee80211_local *local = wiphy_priv(wiphy); 1491 struct sta_info *sta; 1492 struct ieee80211_sub_if_data *vlansdata; 1493 enum cfg80211_station_type statype; 1494 int err; 1495 1496 mutex_lock(&local->sta_mtx); 1497 1498 sta = sta_info_get_bss(sdata, mac); 1499 if (!sta) { 1500 err = -ENOENT; 1501 goto out_err; 1502 } 1503 1504 switch (sdata->vif.type) { 1505 case NL80211_IFTYPE_MESH_POINT: 1506 if (sdata->u.mesh.user_mpm) 1507 statype = CFG80211_STA_MESH_PEER_USER; 1508 else 1509 statype = CFG80211_STA_MESH_PEER_KERNEL; 1510 break; 1511 case NL80211_IFTYPE_ADHOC: 1512 statype = CFG80211_STA_IBSS; 1513 break; 1514 case NL80211_IFTYPE_STATION: 1515 if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER)) { 1516 statype = CFG80211_STA_AP_STA; 1517 break; 1518 } 1519 if (test_sta_flag(sta, WLAN_STA_AUTHORIZED)) 1520 statype = CFG80211_STA_TDLS_PEER_ACTIVE; 1521 else 1522 statype = CFG80211_STA_TDLS_PEER_SETUP; 1523 break; 1524 case NL80211_IFTYPE_AP: 1525 case NL80211_IFTYPE_AP_VLAN: 1526 statype = CFG80211_STA_AP_CLIENT; 1527 break; 1528 default: 1529 err = -EOPNOTSUPP; 1530 goto out_err; 1531 } 1532 1533 err = cfg80211_check_station_change(wiphy, params, statype); 1534 if (err) 1535 goto out_err; 1536 1537 if (params->vlan && params->vlan != sta->sdata->dev) { 1538 bool prev_4addr = false; 1539 bool new_4addr = false; 1540 1541 vlansdata = IEEE80211_DEV_TO_SUB_IF(params->vlan); 1542 1543 if (params->vlan->ieee80211_ptr->use_4addr) { 1544 if (vlansdata->u.vlan.sta) { 1545 err = -EBUSY; 1546 goto out_err; 1547 } 1548 1549 rcu_assign_pointer(vlansdata->u.vlan.sta, sta); 1550 new_4addr = true; 1551 } 1552 1553 if (sta->sdata->vif.type == NL80211_IFTYPE_AP_VLAN && 1554 sta->sdata->u.vlan.sta) { 1555 rcu_assign_pointer(sta->sdata->u.vlan.sta, NULL); 1556 prev_4addr = true; 1557 } 1558 1559 sta->sdata = vlansdata; 1560 1561 if (sta->sta_state == IEEE80211_STA_AUTHORIZED && 1562 prev_4addr != new_4addr) { 1563 if (new_4addr) 1564 atomic_dec(&sta->sdata->bss->num_mcast_sta); 1565 else 1566 atomic_inc(&sta->sdata->bss->num_mcast_sta); 1567 } 1568 1569 ieee80211_send_layer2_update(sta); 1570 } 1571 1572 err = sta_apply_parameters(local, sta, params); 1573 if (err) 1574 goto out_err; 1575 1576 /* When peer becomes authorized, init rate control as well */ 1577 if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) && 1578 test_sta_flag(sta, WLAN_STA_AUTHORIZED)) 1579 rate_control_rate_init(sta); 1580 1581 mutex_unlock(&local->sta_mtx); 1582 1583 if ((sdata->vif.type == NL80211_IFTYPE_AP || 1584 sdata->vif.type == NL80211_IFTYPE_AP_VLAN) && 1585 sta->known_smps_mode != sta->sdata->bss->req_smps && 1586 test_sta_flag(sta, WLAN_STA_AUTHORIZED) && 1587 sta_info_tx_streams(sta) != 1) { 1588 ht_dbg(sta->sdata, 1589 "%pM just authorized and MIMO capable - update SMPS\n", 1590 sta->sta.addr); 1591 ieee80211_send_smps_action(sta->sdata, 1592 sta->sdata->bss->req_smps, 1593 sta->sta.addr, 1594 sta->sdata->vif.bss_conf.bssid); 1595 } 1596 1597 if (sdata->vif.type == NL80211_IFTYPE_STATION && 1598 params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) { 1599 ieee80211_recalc_ps(local, -1); 1600 ieee80211_recalc_ps_vif(sdata); 1601 } 1602 1603 return 0; 1604 out_err: 1605 mutex_unlock(&local->sta_mtx); 1606 return err; 1607 } 1608 1609 #ifdef CONFIG_MAC80211_MESH 1610 static int ieee80211_add_mpath(struct wiphy *wiphy, struct net_device *dev, 1611 u8 *dst, u8 *next_hop) 1612 { 1613 struct ieee80211_sub_if_data *sdata; 1614 struct mesh_path *mpath; 1615 struct sta_info *sta; 1616 1617 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1618 1619 rcu_read_lock(); 1620 sta = sta_info_get(sdata, next_hop); 1621 if (!sta) { 1622 rcu_read_unlock(); 1623 return -ENOENT; 1624 } 1625 1626 mpath = mesh_path_add(sdata, dst); 1627 if (IS_ERR(mpath)) { 1628 rcu_read_unlock(); 1629 return PTR_ERR(mpath); 1630 } 1631 1632 mesh_path_fix_nexthop(mpath, sta); 1633 1634 rcu_read_unlock(); 1635 return 0; 1636 } 1637 1638 static int ieee80211_del_mpath(struct wiphy *wiphy, struct net_device *dev, 1639 u8 *dst) 1640 { 1641 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1642 1643 if (dst) 1644 return mesh_path_del(sdata, dst); 1645 1646 mesh_path_flush_by_iface(sdata); 1647 return 0; 1648 } 1649 1650 static int ieee80211_change_mpath(struct wiphy *wiphy, 1651 struct net_device *dev, 1652 u8 *dst, u8 *next_hop) 1653 { 1654 struct ieee80211_sub_if_data *sdata; 1655 struct mesh_path *mpath; 1656 struct sta_info *sta; 1657 1658 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1659 1660 rcu_read_lock(); 1661 1662 sta = sta_info_get(sdata, next_hop); 1663 if (!sta) { 1664 rcu_read_unlock(); 1665 return -ENOENT; 1666 } 1667 1668 mpath = mesh_path_lookup(sdata, dst); 1669 if (!mpath) { 1670 rcu_read_unlock(); 1671 return -ENOENT; 1672 } 1673 1674 mesh_path_fix_nexthop(mpath, sta); 1675 1676 rcu_read_unlock(); 1677 return 0; 1678 } 1679 1680 static void mpath_set_pinfo(struct mesh_path *mpath, u8 *next_hop, 1681 struct mpath_info *pinfo) 1682 { 1683 struct sta_info *next_hop_sta = rcu_dereference(mpath->next_hop); 1684 1685 if (next_hop_sta) 1686 memcpy(next_hop, next_hop_sta->sta.addr, ETH_ALEN); 1687 else 1688 memset(next_hop, 0, ETH_ALEN); 1689 1690 memset(pinfo, 0, sizeof(*pinfo)); 1691 1692 pinfo->generation = mesh_paths_generation; 1693 1694 pinfo->filled = MPATH_INFO_FRAME_QLEN | 1695 MPATH_INFO_SN | 1696 MPATH_INFO_METRIC | 1697 MPATH_INFO_EXPTIME | 1698 MPATH_INFO_DISCOVERY_TIMEOUT | 1699 MPATH_INFO_DISCOVERY_RETRIES | 1700 MPATH_INFO_FLAGS; 1701 1702 pinfo->frame_qlen = mpath->frame_queue.qlen; 1703 pinfo->sn = mpath->sn; 1704 pinfo->metric = mpath->metric; 1705 if (time_before(jiffies, mpath->exp_time)) 1706 pinfo->exptime = jiffies_to_msecs(mpath->exp_time - jiffies); 1707 pinfo->discovery_timeout = 1708 jiffies_to_msecs(mpath->discovery_timeout); 1709 pinfo->discovery_retries = mpath->discovery_retries; 1710 if (mpath->flags & MESH_PATH_ACTIVE) 1711 pinfo->flags |= NL80211_MPATH_FLAG_ACTIVE; 1712 if (mpath->flags & MESH_PATH_RESOLVING) 1713 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING; 1714 if (mpath->flags & MESH_PATH_SN_VALID) 1715 pinfo->flags |= NL80211_MPATH_FLAG_SN_VALID; 1716 if (mpath->flags & MESH_PATH_FIXED) 1717 pinfo->flags |= NL80211_MPATH_FLAG_FIXED; 1718 if (mpath->flags & MESH_PATH_RESOLVED) 1719 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVED; 1720 } 1721 1722 static int ieee80211_get_mpath(struct wiphy *wiphy, struct net_device *dev, 1723 u8 *dst, u8 *next_hop, struct mpath_info *pinfo) 1724 1725 { 1726 struct ieee80211_sub_if_data *sdata; 1727 struct mesh_path *mpath; 1728 1729 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1730 1731 rcu_read_lock(); 1732 mpath = mesh_path_lookup(sdata, dst); 1733 if (!mpath) { 1734 rcu_read_unlock(); 1735 return -ENOENT; 1736 } 1737 memcpy(dst, mpath->dst, ETH_ALEN); 1738 mpath_set_pinfo(mpath, next_hop, pinfo); 1739 rcu_read_unlock(); 1740 return 0; 1741 } 1742 1743 static int ieee80211_dump_mpath(struct wiphy *wiphy, struct net_device *dev, 1744 int idx, u8 *dst, u8 *next_hop, 1745 struct mpath_info *pinfo) 1746 { 1747 struct ieee80211_sub_if_data *sdata; 1748 struct mesh_path *mpath; 1749 1750 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1751 1752 rcu_read_lock(); 1753 mpath = mesh_path_lookup_by_idx(sdata, idx); 1754 if (!mpath) { 1755 rcu_read_unlock(); 1756 return -ENOENT; 1757 } 1758 memcpy(dst, mpath->dst, ETH_ALEN); 1759 mpath_set_pinfo(mpath, next_hop, pinfo); 1760 rcu_read_unlock(); 1761 return 0; 1762 } 1763 1764 static int ieee80211_get_mesh_config(struct wiphy *wiphy, 1765 struct net_device *dev, 1766 struct mesh_config *conf) 1767 { 1768 struct ieee80211_sub_if_data *sdata; 1769 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1770 1771 memcpy(conf, &(sdata->u.mesh.mshcfg), sizeof(struct mesh_config)); 1772 return 0; 1773 } 1774 1775 static inline bool _chg_mesh_attr(enum nl80211_meshconf_params parm, u32 mask) 1776 { 1777 return (mask >> (parm-1)) & 0x1; 1778 } 1779 1780 static int copy_mesh_setup(struct ieee80211_if_mesh *ifmsh, 1781 const struct mesh_setup *setup) 1782 { 1783 u8 *new_ie; 1784 const u8 *old_ie; 1785 struct ieee80211_sub_if_data *sdata = container_of(ifmsh, 1786 struct ieee80211_sub_if_data, u.mesh); 1787 1788 /* allocate information elements */ 1789 new_ie = NULL; 1790 old_ie = ifmsh->ie; 1791 1792 if (setup->ie_len) { 1793 new_ie = kmemdup(setup->ie, setup->ie_len, 1794 GFP_KERNEL); 1795 if (!new_ie) 1796 return -ENOMEM; 1797 } 1798 ifmsh->ie_len = setup->ie_len; 1799 ifmsh->ie = new_ie; 1800 kfree(old_ie); 1801 1802 /* now copy the rest of the setup parameters */ 1803 ifmsh->mesh_id_len = setup->mesh_id_len; 1804 memcpy(ifmsh->mesh_id, setup->mesh_id, ifmsh->mesh_id_len); 1805 ifmsh->mesh_sp_id = setup->sync_method; 1806 ifmsh->mesh_pp_id = setup->path_sel_proto; 1807 ifmsh->mesh_pm_id = setup->path_metric; 1808 ifmsh->user_mpm = setup->user_mpm; 1809 ifmsh->mesh_auth_id = setup->auth_id; 1810 ifmsh->security = IEEE80211_MESH_SEC_NONE; 1811 if (setup->is_authenticated) 1812 ifmsh->security |= IEEE80211_MESH_SEC_AUTHED; 1813 if (setup->is_secure) 1814 ifmsh->security |= IEEE80211_MESH_SEC_SECURED; 1815 1816 /* mcast rate setting in Mesh Node */ 1817 memcpy(sdata->vif.bss_conf.mcast_rate, setup->mcast_rate, 1818 sizeof(setup->mcast_rate)); 1819 sdata->vif.bss_conf.basic_rates = setup->basic_rates; 1820 1821 sdata->vif.bss_conf.beacon_int = setup->beacon_interval; 1822 sdata->vif.bss_conf.dtim_period = setup->dtim_period; 1823 1824 return 0; 1825 } 1826 1827 static int ieee80211_update_mesh_config(struct wiphy *wiphy, 1828 struct net_device *dev, u32 mask, 1829 const struct mesh_config *nconf) 1830 { 1831 struct mesh_config *conf; 1832 struct ieee80211_sub_if_data *sdata; 1833 struct ieee80211_if_mesh *ifmsh; 1834 1835 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1836 ifmsh = &sdata->u.mesh; 1837 1838 /* Set the config options which we are interested in setting */ 1839 conf = &(sdata->u.mesh.mshcfg); 1840 if (_chg_mesh_attr(NL80211_MESHCONF_RETRY_TIMEOUT, mask)) 1841 conf->dot11MeshRetryTimeout = nconf->dot11MeshRetryTimeout; 1842 if (_chg_mesh_attr(NL80211_MESHCONF_CONFIRM_TIMEOUT, mask)) 1843 conf->dot11MeshConfirmTimeout = nconf->dot11MeshConfirmTimeout; 1844 if (_chg_mesh_attr(NL80211_MESHCONF_HOLDING_TIMEOUT, mask)) 1845 conf->dot11MeshHoldingTimeout = nconf->dot11MeshHoldingTimeout; 1846 if (_chg_mesh_attr(NL80211_MESHCONF_MAX_PEER_LINKS, mask)) 1847 conf->dot11MeshMaxPeerLinks = nconf->dot11MeshMaxPeerLinks; 1848 if (_chg_mesh_attr(NL80211_MESHCONF_MAX_RETRIES, mask)) 1849 conf->dot11MeshMaxRetries = nconf->dot11MeshMaxRetries; 1850 if (_chg_mesh_attr(NL80211_MESHCONF_TTL, mask)) 1851 conf->dot11MeshTTL = nconf->dot11MeshTTL; 1852 if (_chg_mesh_attr(NL80211_MESHCONF_ELEMENT_TTL, mask)) 1853 conf->element_ttl = nconf->element_ttl; 1854 if (_chg_mesh_attr(NL80211_MESHCONF_AUTO_OPEN_PLINKS, mask)) { 1855 if (ifmsh->user_mpm) 1856 return -EBUSY; 1857 conf->auto_open_plinks = nconf->auto_open_plinks; 1858 } 1859 if (_chg_mesh_attr(NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR, mask)) 1860 conf->dot11MeshNbrOffsetMaxNeighbor = 1861 nconf->dot11MeshNbrOffsetMaxNeighbor; 1862 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES, mask)) 1863 conf->dot11MeshHWMPmaxPREQretries = 1864 nconf->dot11MeshHWMPmaxPREQretries; 1865 if (_chg_mesh_attr(NL80211_MESHCONF_PATH_REFRESH_TIME, mask)) 1866 conf->path_refresh_time = nconf->path_refresh_time; 1867 if (_chg_mesh_attr(NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT, mask)) 1868 conf->min_discovery_timeout = nconf->min_discovery_timeout; 1869 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT, mask)) 1870 conf->dot11MeshHWMPactivePathTimeout = 1871 nconf->dot11MeshHWMPactivePathTimeout; 1872 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL, mask)) 1873 conf->dot11MeshHWMPpreqMinInterval = 1874 nconf->dot11MeshHWMPpreqMinInterval; 1875 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL, mask)) 1876 conf->dot11MeshHWMPperrMinInterval = 1877 nconf->dot11MeshHWMPperrMinInterval; 1878 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME, 1879 mask)) 1880 conf->dot11MeshHWMPnetDiameterTraversalTime = 1881 nconf->dot11MeshHWMPnetDiameterTraversalTime; 1882 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOTMODE, mask)) { 1883 conf->dot11MeshHWMPRootMode = nconf->dot11MeshHWMPRootMode; 1884 ieee80211_mesh_root_setup(ifmsh); 1885 } 1886 if (_chg_mesh_attr(NL80211_MESHCONF_GATE_ANNOUNCEMENTS, mask)) { 1887 /* our current gate announcement implementation rides on root 1888 * announcements, so require this ifmsh to also be a root node 1889 * */ 1890 if (nconf->dot11MeshGateAnnouncementProtocol && 1891 !(conf->dot11MeshHWMPRootMode > IEEE80211_ROOTMODE_ROOT)) { 1892 conf->dot11MeshHWMPRootMode = IEEE80211_PROACTIVE_RANN; 1893 ieee80211_mesh_root_setup(ifmsh); 1894 } 1895 conf->dot11MeshGateAnnouncementProtocol = 1896 nconf->dot11MeshGateAnnouncementProtocol; 1897 } 1898 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_RANN_INTERVAL, mask)) 1899 conf->dot11MeshHWMPRannInterval = 1900 nconf->dot11MeshHWMPRannInterval; 1901 if (_chg_mesh_attr(NL80211_MESHCONF_FORWARDING, mask)) 1902 conf->dot11MeshForwarding = nconf->dot11MeshForwarding; 1903 if (_chg_mesh_attr(NL80211_MESHCONF_RSSI_THRESHOLD, mask)) { 1904 /* our RSSI threshold implementation is supported only for 1905 * devices that report signal in dBm. 1906 */ 1907 if (!(sdata->local->hw.flags & IEEE80211_HW_SIGNAL_DBM)) 1908 return -ENOTSUPP; 1909 conf->rssi_threshold = nconf->rssi_threshold; 1910 } 1911 if (_chg_mesh_attr(NL80211_MESHCONF_HT_OPMODE, mask)) { 1912 conf->ht_opmode = nconf->ht_opmode; 1913 sdata->vif.bss_conf.ht_operation_mode = nconf->ht_opmode; 1914 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_HT); 1915 } 1916 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT, mask)) 1917 conf->dot11MeshHWMPactivePathToRootTimeout = 1918 nconf->dot11MeshHWMPactivePathToRootTimeout; 1919 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOT_INTERVAL, mask)) 1920 conf->dot11MeshHWMProotInterval = 1921 nconf->dot11MeshHWMProotInterval; 1922 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL, mask)) 1923 conf->dot11MeshHWMPconfirmationInterval = 1924 nconf->dot11MeshHWMPconfirmationInterval; 1925 if (_chg_mesh_attr(NL80211_MESHCONF_POWER_MODE, mask)) { 1926 conf->power_mode = nconf->power_mode; 1927 ieee80211_mps_local_status_update(sdata); 1928 } 1929 if (_chg_mesh_attr(NL80211_MESHCONF_AWAKE_WINDOW, mask)) 1930 conf->dot11MeshAwakeWindowDuration = 1931 nconf->dot11MeshAwakeWindowDuration; 1932 if (_chg_mesh_attr(NL80211_MESHCONF_PLINK_TIMEOUT, mask)) 1933 conf->plink_timeout = nconf->plink_timeout; 1934 ieee80211_mbss_info_change_notify(sdata, BSS_CHANGED_BEACON); 1935 return 0; 1936 } 1937 1938 static int ieee80211_join_mesh(struct wiphy *wiphy, struct net_device *dev, 1939 const struct mesh_config *conf, 1940 const struct mesh_setup *setup) 1941 { 1942 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1943 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh; 1944 int err; 1945 1946 memcpy(&ifmsh->mshcfg, conf, sizeof(struct mesh_config)); 1947 err = copy_mesh_setup(ifmsh, setup); 1948 if (err) 1949 return err; 1950 1951 /* can mesh use other SMPS modes? */ 1952 sdata->smps_mode = IEEE80211_SMPS_OFF; 1953 sdata->needed_rx_chains = sdata->local->rx_chains; 1954 1955 mutex_lock(&sdata->local->mtx); 1956 err = ieee80211_vif_use_channel(sdata, &setup->chandef, 1957 IEEE80211_CHANCTX_SHARED); 1958 mutex_unlock(&sdata->local->mtx); 1959 if (err) 1960 return err; 1961 1962 return ieee80211_start_mesh(sdata); 1963 } 1964 1965 static int ieee80211_leave_mesh(struct wiphy *wiphy, struct net_device *dev) 1966 { 1967 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1968 1969 ieee80211_stop_mesh(sdata); 1970 mutex_lock(&sdata->local->mtx); 1971 ieee80211_vif_release_channel(sdata); 1972 mutex_unlock(&sdata->local->mtx); 1973 1974 return 0; 1975 } 1976 #endif 1977 1978 static int ieee80211_change_bss(struct wiphy *wiphy, 1979 struct net_device *dev, 1980 struct bss_parameters *params) 1981 { 1982 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1983 enum ieee80211_band band; 1984 u32 changed = 0; 1985 1986 if (!sdata_dereference(sdata->u.ap.beacon, sdata)) 1987 return -ENOENT; 1988 1989 band = ieee80211_get_sdata_band(sdata); 1990 1991 if (params->use_cts_prot >= 0) { 1992 sdata->vif.bss_conf.use_cts_prot = params->use_cts_prot; 1993 changed |= BSS_CHANGED_ERP_CTS_PROT; 1994 } 1995 if (params->use_short_preamble >= 0) { 1996 sdata->vif.bss_conf.use_short_preamble = 1997 params->use_short_preamble; 1998 changed |= BSS_CHANGED_ERP_PREAMBLE; 1999 } 2000 2001 if (!sdata->vif.bss_conf.use_short_slot && 2002 band == IEEE80211_BAND_5GHZ) { 2003 sdata->vif.bss_conf.use_short_slot = true; 2004 changed |= BSS_CHANGED_ERP_SLOT; 2005 } 2006 2007 if (params->use_short_slot_time >= 0) { 2008 sdata->vif.bss_conf.use_short_slot = 2009 params->use_short_slot_time; 2010 changed |= BSS_CHANGED_ERP_SLOT; 2011 } 2012 2013 if (params->basic_rates) { 2014 ieee80211_parse_bitrates(&sdata->vif.bss_conf.chandef, 2015 wiphy->bands[band], 2016 params->basic_rates, 2017 params->basic_rates_len, 2018 &sdata->vif.bss_conf.basic_rates); 2019 changed |= BSS_CHANGED_BASIC_RATES; 2020 } 2021 2022 if (params->ap_isolate >= 0) { 2023 if (params->ap_isolate) 2024 sdata->flags |= IEEE80211_SDATA_DONT_BRIDGE_PACKETS; 2025 else 2026 sdata->flags &= ~IEEE80211_SDATA_DONT_BRIDGE_PACKETS; 2027 } 2028 2029 if (params->ht_opmode >= 0) { 2030 sdata->vif.bss_conf.ht_operation_mode = 2031 (u16) params->ht_opmode; 2032 changed |= BSS_CHANGED_HT; 2033 } 2034 2035 if (params->p2p_ctwindow >= 0) { 2036 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow &= 2037 ~IEEE80211_P2P_OPPPS_CTWINDOW_MASK; 2038 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |= 2039 params->p2p_ctwindow & IEEE80211_P2P_OPPPS_CTWINDOW_MASK; 2040 changed |= BSS_CHANGED_P2P_PS; 2041 } 2042 2043 if (params->p2p_opp_ps > 0) { 2044 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |= 2045 IEEE80211_P2P_OPPPS_ENABLE_BIT; 2046 changed |= BSS_CHANGED_P2P_PS; 2047 } else if (params->p2p_opp_ps == 0) { 2048 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow &= 2049 ~IEEE80211_P2P_OPPPS_ENABLE_BIT; 2050 changed |= BSS_CHANGED_P2P_PS; 2051 } 2052 2053 ieee80211_bss_info_change_notify(sdata, changed); 2054 2055 return 0; 2056 } 2057 2058 static int ieee80211_set_txq_params(struct wiphy *wiphy, 2059 struct net_device *dev, 2060 struct ieee80211_txq_params *params) 2061 { 2062 struct ieee80211_local *local = wiphy_priv(wiphy); 2063 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2064 struct ieee80211_tx_queue_params p; 2065 2066 if (!local->ops->conf_tx) 2067 return -EOPNOTSUPP; 2068 2069 if (local->hw.queues < IEEE80211_NUM_ACS) 2070 return -EOPNOTSUPP; 2071 2072 memset(&p, 0, sizeof(p)); 2073 p.aifs = params->aifs; 2074 p.cw_max = params->cwmax; 2075 p.cw_min = params->cwmin; 2076 p.txop = params->txop; 2077 2078 /* 2079 * Setting tx queue params disables u-apsd because it's only 2080 * called in master mode. 2081 */ 2082 p.uapsd = false; 2083 2084 sdata->tx_conf[params->ac] = p; 2085 if (drv_conf_tx(local, sdata, params->ac, &p)) { 2086 wiphy_debug(local->hw.wiphy, 2087 "failed to set TX queue parameters for AC %d\n", 2088 params->ac); 2089 return -EINVAL; 2090 } 2091 2092 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_QOS); 2093 2094 return 0; 2095 } 2096 2097 #ifdef CONFIG_PM 2098 static int ieee80211_suspend(struct wiphy *wiphy, 2099 struct cfg80211_wowlan *wowlan) 2100 { 2101 return __ieee80211_suspend(wiphy_priv(wiphy), wowlan); 2102 } 2103 2104 static int ieee80211_resume(struct wiphy *wiphy) 2105 { 2106 return __ieee80211_resume(wiphy_priv(wiphy)); 2107 } 2108 #else 2109 #define ieee80211_suspend NULL 2110 #define ieee80211_resume NULL 2111 #endif 2112 2113 static int ieee80211_scan(struct wiphy *wiphy, 2114 struct cfg80211_scan_request *req) 2115 { 2116 struct ieee80211_sub_if_data *sdata; 2117 2118 sdata = IEEE80211_WDEV_TO_SUB_IF(req->wdev); 2119 2120 switch (ieee80211_vif_type_p2p(&sdata->vif)) { 2121 case NL80211_IFTYPE_STATION: 2122 case NL80211_IFTYPE_ADHOC: 2123 case NL80211_IFTYPE_MESH_POINT: 2124 case NL80211_IFTYPE_P2P_CLIENT: 2125 case NL80211_IFTYPE_P2P_DEVICE: 2126 break; 2127 case NL80211_IFTYPE_P2P_GO: 2128 if (sdata->local->ops->hw_scan) 2129 break; 2130 /* 2131 * FIXME: implement NoA while scanning in software, 2132 * for now fall through to allow scanning only when 2133 * beaconing hasn't been configured yet 2134 */ 2135 case NL80211_IFTYPE_AP: 2136 /* 2137 * If the scan has been forced (and the driver supports 2138 * forcing), don't care about being beaconing already. 2139 * This will create problems to the attached stations (e.g. all 2140 * the frames sent while scanning on other channel will be 2141 * lost) 2142 */ 2143 if (sdata->u.ap.beacon && 2144 (!(wiphy->features & NL80211_FEATURE_AP_SCAN) || 2145 !(req->flags & NL80211_SCAN_FLAG_AP))) 2146 return -EOPNOTSUPP; 2147 break; 2148 default: 2149 return -EOPNOTSUPP; 2150 } 2151 2152 return ieee80211_request_scan(sdata, req); 2153 } 2154 2155 static int 2156 ieee80211_sched_scan_start(struct wiphy *wiphy, 2157 struct net_device *dev, 2158 struct cfg80211_sched_scan_request *req) 2159 { 2160 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2161 2162 if (!sdata->local->ops->sched_scan_start) 2163 return -EOPNOTSUPP; 2164 2165 return ieee80211_request_sched_scan_start(sdata, req); 2166 } 2167 2168 static int 2169 ieee80211_sched_scan_stop(struct wiphy *wiphy, struct net_device *dev) 2170 { 2171 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2172 2173 if (!sdata->local->ops->sched_scan_stop) 2174 return -EOPNOTSUPP; 2175 2176 return ieee80211_request_sched_scan_stop(sdata); 2177 } 2178 2179 static int ieee80211_auth(struct wiphy *wiphy, struct net_device *dev, 2180 struct cfg80211_auth_request *req) 2181 { 2182 return ieee80211_mgd_auth(IEEE80211_DEV_TO_SUB_IF(dev), req); 2183 } 2184 2185 static int ieee80211_assoc(struct wiphy *wiphy, struct net_device *dev, 2186 struct cfg80211_assoc_request *req) 2187 { 2188 return ieee80211_mgd_assoc(IEEE80211_DEV_TO_SUB_IF(dev), req); 2189 } 2190 2191 static int ieee80211_deauth(struct wiphy *wiphy, struct net_device *dev, 2192 struct cfg80211_deauth_request *req) 2193 { 2194 return ieee80211_mgd_deauth(IEEE80211_DEV_TO_SUB_IF(dev), req); 2195 } 2196 2197 static int ieee80211_disassoc(struct wiphy *wiphy, struct net_device *dev, 2198 struct cfg80211_disassoc_request *req) 2199 { 2200 return ieee80211_mgd_disassoc(IEEE80211_DEV_TO_SUB_IF(dev), req); 2201 } 2202 2203 static int ieee80211_join_ibss(struct wiphy *wiphy, struct net_device *dev, 2204 struct cfg80211_ibss_params *params) 2205 { 2206 return ieee80211_ibss_join(IEEE80211_DEV_TO_SUB_IF(dev), params); 2207 } 2208 2209 static int ieee80211_leave_ibss(struct wiphy *wiphy, struct net_device *dev) 2210 { 2211 return ieee80211_ibss_leave(IEEE80211_DEV_TO_SUB_IF(dev)); 2212 } 2213 2214 static int ieee80211_set_mcast_rate(struct wiphy *wiphy, struct net_device *dev, 2215 int rate[IEEE80211_NUM_BANDS]) 2216 { 2217 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2218 2219 memcpy(sdata->vif.bss_conf.mcast_rate, rate, 2220 sizeof(int) * IEEE80211_NUM_BANDS); 2221 2222 return 0; 2223 } 2224 2225 static int ieee80211_set_wiphy_params(struct wiphy *wiphy, u32 changed) 2226 { 2227 struct ieee80211_local *local = wiphy_priv(wiphy); 2228 int err; 2229 2230 if (changed & WIPHY_PARAM_FRAG_THRESHOLD) { 2231 err = drv_set_frag_threshold(local, wiphy->frag_threshold); 2232 2233 if (err) 2234 return err; 2235 } 2236 2237 if (changed & WIPHY_PARAM_COVERAGE_CLASS) { 2238 err = drv_set_coverage_class(local, wiphy->coverage_class); 2239 2240 if (err) 2241 return err; 2242 } 2243 2244 if (changed & WIPHY_PARAM_RTS_THRESHOLD) { 2245 err = drv_set_rts_threshold(local, wiphy->rts_threshold); 2246 2247 if (err) 2248 return err; 2249 } 2250 2251 if (changed & WIPHY_PARAM_RETRY_SHORT) { 2252 if (wiphy->retry_short > IEEE80211_MAX_TX_RETRY) 2253 return -EINVAL; 2254 local->hw.conf.short_frame_max_tx_count = wiphy->retry_short; 2255 } 2256 if (changed & WIPHY_PARAM_RETRY_LONG) { 2257 if (wiphy->retry_long > IEEE80211_MAX_TX_RETRY) 2258 return -EINVAL; 2259 local->hw.conf.long_frame_max_tx_count = wiphy->retry_long; 2260 } 2261 if (changed & 2262 (WIPHY_PARAM_RETRY_SHORT | WIPHY_PARAM_RETRY_LONG)) 2263 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_RETRY_LIMITS); 2264 2265 return 0; 2266 } 2267 2268 static int ieee80211_set_tx_power(struct wiphy *wiphy, 2269 struct wireless_dev *wdev, 2270 enum nl80211_tx_power_setting type, int mbm) 2271 { 2272 struct ieee80211_local *local = wiphy_priv(wiphy); 2273 struct ieee80211_sub_if_data *sdata; 2274 2275 if (wdev) { 2276 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 2277 2278 switch (type) { 2279 case NL80211_TX_POWER_AUTOMATIC: 2280 sdata->user_power_level = IEEE80211_UNSET_POWER_LEVEL; 2281 break; 2282 case NL80211_TX_POWER_LIMITED: 2283 case NL80211_TX_POWER_FIXED: 2284 if (mbm < 0 || (mbm % 100)) 2285 return -EOPNOTSUPP; 2286 sdata->user_power_level = MBM_TO_DBM(mbm); 2287 break; 2288 } 2289 2290 ieee80211_recalc_txpower(sdata); 2291 2292 return 0; 2293 } 2294 2295 switch (type) { 2296 case NL80211_TX_POWER_AUTOMATIC: 2297 local->user_power_level = IEEE80211_UNSET_POWER_LEVEL; 2298 break; 2299 case NL80211_TX_POWER_LIMITED: 2300 case NL80211_TX_POWER_FIXED: 2301 if (mbm < 0 || (mbm % 100)) 2302 return -EOPNOTSUPP; 2303 local->user_power_level = MBM_TO_DBM(mbm); 2304 break; 2305 } 2306 2307 mutex_lock(&local->iflist_mtx); 2308 list_for_each_entry(sdata, &local->interfaces, list) 2309 sdata->user_power_level = local->user_power_level; 2310 list_for_each_entry(sdata, &local->interfaces, list) 2311 ieee80211_recalc_txpower(sdata); 2312 mutex_unlock(&local->iflist_mtx); 2313 2314 return 0; 2315 } 2316 2317 static int ieee80211_get_tx_power(struct wiphy *wiphy, 2318 struct wireless_dev *wdev, 2319 int *dbm) 2320 { 2321 struct ieee80211_local *local = wiphy_priv(wiphy); 2322 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 2323 2324 if (!local->use_chanctx) 2325 *dbm = local->hw.conf.power_level; 2326 else 2327 *dbm = sdata->vif.bss_conf.txpower; 2328 2329 return 0; 2330 } 2331 2332 static int ieee80211_set_wds_peer(struct wiphy *wiphy, struct net_device *dev, 2333 const u8 *addr) 2334 { 2335 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2336 2337 memcpy(&sdata->u.wds.remote_addr, addr, ETH_ALEN); 2338 2339 return 0; 2340 } 2341 2342 static void ieee80211_rfkill_poll(struct wiphy *wiphy) 2343 { 2344 struct ieee80211_local *local = wiphy_priv(wiphy); 2345 2346 drv_rfkill_poll(local); 2347 } 2348 2349 #ifdef CONFIG_NL80211_TESTMODE 2350 static int ieee80211_testmode_cmd(struct wiphy *wiphy, 2351 struct wireless_dev *wdev, 2352 void *data, int len) 2353 { 2354 struct ieee80211_local *local = wiphy_priv(wiphy); 2355 struct ieee80211_vif *vif = NULL; 2356 2357 if (!local->ops->testmode_cmd) 2358 return -EOPNOTSUPP; 2359 2360 if (wdev) { 2361 struct ieee80211_sub_if_data *sdata; 2362 2363 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 2364 if (sdata->flags & IEEE80211_SDATA_IN_DRIVER) 2365 vif = &sdata->vif; 2366 } 2367 2368 return local->ops->testmode_cmd(&local->hw, vif, data, len); 2369 } 2370 2371 static int ieee80211_testmode_dump(struct wiphy *wiphy, 2372 struct sk_buff *skb, 2373 struct netlink_callback *cb, 2374 void *data, int len) 2375 { 2376 struct ieee80211_local *local = wiphy_priv(wiphy); 2377 2378 if (!local->ops->testmode_dump) 2379 return -EOPNOTSUPP; 2380 2381 return local->ops->testmode_dump(&local->hw, skb, cb, data, len); 2382 } 2383 #endif 2384 2385 int __ieee80211_request_smps_ap(struct ieee80211_sub_if_data *sdata, 2386 enum ieee80211_smps_mode smps_mode) 2387 { 2388 struct sta_info *sta; 2389 enum ieee80211_smps_mode old_req; 2390 int i; 2391 2392 if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_AP)) 2393 return -EINVAL; 2394 2395 if (sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_20_NOHT) 2396 return 0; 2397 2398 old_req = sdata->u.ap.req_smps; 2399 sdata->u.ap.req_smps = smps_mode; 2400 2401 /* AUTOMATIC doesn't mean much for AP - don't allow it */ 2402 if (old_req == smps_mode || 2403 smps_mode == IEEE80211_SMPS_AUTOMATIC) 2404 return 0; 2405 2406 /* If no associated stations, there's no need to do anything */ 2407 if (!atomic_read(&sdata->u.ap.num_mcast_sta)) { 2408 sdata->smps_mode = smps_mode; 2409 ieee80211_queue_work(&sdata->local->hw, &sdata->recalc_smps); 2410 return 0; 2411 } 2412 2413 ht_dbg(sdata, 2414 "SMSP %d requested in AP mode, sending Action frame to %d stations\n", 2415 smps_mode, atomic_read(&sdata->u.ap.num_mcast_sta)); 2416 2417 mutex_lock(&sdata->local->sta_mtx); 2418 for (i = 0; i < STA_HASH_SIZE; i++) { 2419 for (sta = rcu_dereference_protected(sdata->local->sta_hash[i], 2420 lockdep_is_held(&sdata->local->sta_mtx)); 2421 sta; 2422 sta = rcu_dereference_protected(sta->hnext, 2423 lockdep_is_held(&sdata->local->sta_mtx))) { 2424 /* 2425 * Only stations associated to our AP and 2426 * associated VLANs 2427 */ 2428 if (sta->sdata->bss != &sdata->u.ap) 2429 continue; 2430 2431 /* This station doesn't support MIMO - skip it */ 2432 if (sta_info_tx_streams(sta) == 1) 2433 continue; 2434 2435 /* 2436 * Don't wake up a STA just to send the action frame 2437 * unless we are getting more restrictive. 2438 */ 2439 if (test_sta_flag(sta, WLAN_STA_PS_STA) && 2440 !ieee80211_smps_is_restrictive(sta->known_smps_mode, 2441 smps_mode)) { 2442 ht_dbg(sdata, 2443 "Won't send SMPS to sleeping STA %pM\n", 2444 sta->sta.addr); 2445 continue; 2446 } 2447 2448 /* 2449 * If the STA is not authorized, wait until it gets 2450 * authorized and the action frame will be sent then. 2451 */ 2452 if (!test_sta_flag(sta, WLAN_STA_AUTHORIZED)) 2453 continue; 2454 2455 ht_dbg(sdata, "Sending SMPS to %pM\n", sta->sta.addr); 2456 ieee80211_send_smps_action(sdata, smps_mode, 2457 sta->sta.addr, 2458 sdata->vif.bss_conf.bssid); 2459 } 2460 } 2461 mutex_unlock(&sdata->local->sta_mtx); 2462 2463 sdata->smps_mode = smps_mode; 2464 ieee80211_queue_work(&sdata->local->hw, &sdata->recalc_smps); 2465 2466 return 0; 2467 } 2468 2469 int __ieee80211_request_smps_mgd(struct ieee80211_sub_if_data *sdata, 2470 enum ieee80211_smps_mode smps_mode) 2471 { 2472 const u8 *ap; 2473 enum ieee80211_smps_mode old_req; 2474 int err; 2475 2476 lockdep_assert_held(&sdata->wdev.mtx); 2477 2478 if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_STATION)) 2479 return -EINVAL; 2480 2481 old_req = sdata->u.mgd.req_smps; 2482 sdata->u.mgd.req_smps = smps_mode; 2483 2484 if (old_req == smps_mode && 2485 smps_mode != IEEE80211_SMPS_AUTOMATIC) 2486 return 0; 2487 2488 /* 2489 * If not associated, or current association is not an HT 2490 * association, there's no need to do anything, just store 2491 * the new value until we associate. 2492 */ 2493 if (!sdata->u.mgd.associated || 2494 sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_20_NOHT) 2495 return 0; 2496 2497 ap = sdata->u.mgd.associated->bssid; 2498 2499 if (smps_mode == IEEE80211_SMPS_AUTOMATIC) { 2500 if (sdata->u.mgd.powersave) 2501 smps_mode = IEEE80211_SMPS_DYNAMIC; 2502 else 2503 smps_mode = IEEE80211_SMPS_OFF; 2504 } 2505 2506 /* send SM PS frame to AP */ 2507 err = ieee80211_send_smps_action(sdata, smps_mode, 2508 ap, ap); 2509 if (err) 2510 sdata->u.mgd.req_smps = old_req; 2511 2512 return err; 2513 } 2514 2515 static int ieee80211_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev, 2516 bool enabled, int timeout) 2517 { 2518 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2519 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); 2520 2521 if (sdata->vif.type != NL80211_IFTYPE_STATION) 2522 return -EOPNOTSUPP; 2523 2524 if (!(local->hw.flags & IEEE80211_HW_SUPPORTS_PS)) 2525 return -EOPNOTSUPP; 2526 2527 if (enabled == sdata->u.mgd.powersave && 2528 timeout == local->dynamic_ps_forced_timeout) 2529 return 0; 2530 2531 sdata->u.mgd.powersave = enabled; 2532 local->dynamic_ps_forced_timeout = timeout; 2533 2534 /* no change, but if automatic follow powersave */ 2535 sdata_lock(sdata); 2536 __ieee80211_request_smps_mgd(sdata, sdata->u.mgd.req_smps); 2537 sdata_unlock(sdata); 2538 2539 if (local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_PS) 2540 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS); 2541 2542 ieee80211_recalc_ps(local, -1); 2543 ieee80211_recalc_ps_vif(sdata); 2544 2545 return 0; 2546 } 2547 2548 static int ieee80211_set_cqm_rssi_config(struct wiphy *wiphy, 2549 struct net_device *dev, 2550 s32 rssi_thold, u32 rssi_hyst) 2551 { 2552 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2553 struct ieee80211_vif *vif = &sdata->vif; 2554 struct ieee80211_bss_conf *bss_conf = &vif->bss_conf; 2555 2556 if (rssi_thold == bss_conf->cqm_rssi_thold && 2557 rssi_hyst == bss_conf->cqm_rssi_hyst) 2558 return 0; 2559 2560 bss_conf->cqm_rssi_thold = rssi_thold; 2561 bss_conf->cqm_rssi_hyst = rssi_hyst; 2562 2563 /* tell the driver upon association, unless already associated */ 2564 if (sdata->u.mgd.associated && 2565 sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI) 2566 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_CQM); 2567 2568 return 0; 2569 } 2570 2571 static int ieee80211_set_bitrate_mask(struct wiphy *wiphy, 2572 struct net_device *dev, 2573 const u8 *addr, 2574 const struct cfg80211_bitrate_mask *mask) 2575 { 2576 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2577 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); 2578 int i, ret; 2579 2580 if (!ieee80211_sdata_running(sdata)) 2581 return -ENETDOWN; 2582 2583 if (local->hw.flags & IEEE80211_HW_HAS_RATE_CONTROL) { 2584 ret = drv_set_bitrate_mask(local, sdata, mask); 2585 if (ret) 2586 return ret; 2587 } 2588 2589 for (i = 0; i < IEEE80211_NUM_BANDS; i++) { 2590 struct ieee80211_supported_band *sband = wiphy->bands[i]; 2591 int j; 2592 2593 sdata->rc_rateidx_mask[i] = mask->control[i].legacy; 2594 memcpy(sdata->rc_rateidx_mcs_mask[i], mask->control[i].ht_mcs, 2595 sizeof(mask->control[i].ht_mcs)); 2596 2597 sdata->rc_has_mcs_mask[i] = false; 2598 if (!sband) 2599 continue; 2600 2601 for (j = 0; j < IEEE80211_HT_MCS_MASK_LEN; j++) 2602 if (~sdata->rc_rateidx_mcs_mask[i][j]) { 2603 sdata->rc_has_mcs_mask[i] = true; 2604 break; 2605 } 2606 } 2607 2608 return 0; 2609 } 2610 2611 static int ieee80211_start_roc_work(struct ieee80211_local *local, 2612 struct ieee80211_sub_if_data *sdata, 2613 struct ieee80211_channel *channel, 2614 unsigned int duration, u64 *cookie, 2615 struct sk_buff *txskb, 2616 enum ieee80211_roc_type type) 2617 { 2618 struct ieee80211_roc_work *roc, *tmp; 2619 bool queued = false; 2620 int ret; 2621 2622 lockdep_assert_held(&local->mtx); 2623 2624 if (local->use_chanctx && !local->ops->remain_on_channel) 2625 return -EOPNOTSUPP; 2626 2627 roc = kzalloc(sizeof(*roc), GFP_KERNEL); 2628 if (!roc) 2629 return -ENOMEM; 2630 2631 roc->chan = channel; 2632 roc->duration = duration; 2633 roc->req_duration = duration; 2634 roc->frame = txskb; 2635 roc->type = type; 2636 roc->mgmt_tx_cookie = (unsigned long)txskb; 2637 roc->sdata = sdata; 2638 INIT_DELAYED_WORK(&roc->work, ieee80211_sw_roc_work); 2639 INIT_LIST_HEAD(&roc->dependents); 2640 2641 /* if there's one pending or we're scanning, queue this one */ 2642 if (!list_empty(&local->roc_list) || 2643 local->scanning || local->radar_detect_enabled) 2644 goto out_check_combine; 2645 2646 /* if not HW assist, just queue & schedule work */ 2647 if (!local->ops->remain_on_channel) { 2648 ieee80211_queue_delayed_work(&local->hw, &roc->work, 0); 2649 goto out_queue; 2650 } 2651 2652 /* otherwise actually kick it off here (for error handling) */ 2653 2654 /* 2655 * If the duration is zero, then the driver 2656 * wouldn't actually do anything. Set it to 2657 * 10 for now. 2658 * 2659 * TODO: cancel the off-channel operation 2660 * when we get the SKB's TX status and 2661 * the wait time was zero before. 2662 */ 2663 if (!duration) 2664 duration = 10; 2665 2666 ret = drv_remain_on_channel(local, sdata, channel, duration, type); 2667 if (ret) { 2668 kfree(roc); 2669 return ret; 2670 } 2671 2672 roc->started = true; 2673 goto out_queue; 2674 2675 out_check_combine: 2676 list_for_each_entry(tmp, &local->roc_list, list) { 2677 if (tmp->chan != channel || tmp->sdata != sdata) 2678 continue; 2679 2680 /* 2681 * Extend this ROC if possible: 2682 * 2683 * If it hasn't started yet, just increase the duration 2684 * and add the new one to the list of dependents. 2685 * If the type of the new ROC has higher priority, modify the 2686 * type of the previous one to match that of the new one. 2687 */ 2688 if (!tmp->started) { 2689 list_add_tail(&roc->list, &tmp->dependents); 2690 tmp->duration = max(tmp->duration, roc->duration); 2691 tmp->type = max(tmp->type, roc->type); 2692 queued = true; 2693 break; 2694 } 2695 2696 /* If it has already started, it's more difficult ... */ 2697 if (local->ops->remain_on_channel) { 2698 unsigned long j = jiffies; 2699 2700 /* 2701 * In the offloaded ROC case, if it hasn't begun, add 2702 * this new one to the dependent list to be handled 2703 * when the master one begins. If it has begun, 2704 * check that there's still a minimum time left and 2705 * if so, start this one, transmitting the frame, but 2706 * add it to the list directly after this one with 2707 * a reduced time so we'll ask the driver to execute 2708 * it right after finishing the previous one, in the 2709 * hope that it'll also be executed right afterwards, 2710 * effectively extending the old one. 2711 * If there's no minimum time left, just add it to the 2712 * normal list. 2713 * TODO: the ROC type is ignored here, assuming that it 2714 * is better to immediately use the current ROC. 2715 */ 2716 if (!tmp->hw_begun) { 2717 list_add_tail(&roc->list, &tmp->dependents); 2718 queued = true; 2719 break; 2720 } 2721 2722 if (time_before(j + IEEE80211_ROC_MIN_LEFT, 2723 tmp->hw_start_time + 2724 msecs_to_jiffies(tmp->duration))) { 2725 int new_dur; 2726 2727 ieee80211_handle_roc_started(roc); 2728 2729 new_dur = roc->duration - 2730 jiffies_to_msecs(tmp->hw_start_time + 2731 msecs_to_jiffies( 2732 tmp->duration) - 2733 j); 2734 2735 if (new_dur > 0) { 2736 /* add right after tmp */ 2737 list_add(&roc->list, &tmp->list); 2738 } else { 2739 list_add_tail(&roc->list, 2740 &tmp->dependents); 2741 } 2742 queued = true; 2743 } 2744 } else if (del_timer_sync(&tmp->work.timer)) { 2745 unsigned long new_end; 2746 2747 /* 2748 * In the software ROC case, cancel the timer, if 2749 * that fails then the finish work is already 2750 * queued/pending and thus we queue the new ROC 2751 * normally, if that succeeds then we can extend 2752 * the timer duration and TX the frame (if any.) 2753 */ 2754 2755 list_add_tail(&roc->list, &tmp->dependents); 2756 queued = true; 2757 2758 new_end = jiffies + msecs_to_jiffies(roc->duration); 2759 2760 /* ok, it was started & we canceled timer */ 2761 if (time_after(new_end, tmp->work.timer.expires)) 2762 mod_timer(&tmp->work.timer, new_end); 2763 else 2764 add_timer(&tmp->work.timer); 2765 2766 ieee80211_handle_roc_started(roc); 2767 } 2768 break; 2769 } 2770 2771 out_queue: 2772 if (!queued) 2773 list_add_tail(&roc->list, &local->roc_list); 2774 2775 /* 2776 * cookie is either the roc cookie (for normal roc) 2777 * or the SKB (for mgmt TX) 2778 */ 2779 if (!txskb) { 2780 /* local->mtx protects this */ 2781 local->roc_cookie_counter++; 2782 roc->cookie = local->roc_cookie_counter; 2783 /* wow, you wrapped 64 bits ... more likely a bug */ 2784 if (WARN_ON(roc->cookie == 0)) { 2785 roc->cookie = 1; 2786 local->roc_cookie_counter++; 2787 } 2788 *cookie = roc->cookie; 2789 } else { 2790 *cookie = (unsigned long)txskb; 2791 } 2792 2793 return 0; 2794 } 2795 2796 static int ieee80211_remain_on_channel(struct wiphy *wiphy, 2797 struct wireless_dev *wdev, 2798 struct ieee80211_channel *chan, 2799 unsigned int duration, 2800 u64 *cookie) 2801 { 2802 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 2803 struct ieee80211_local *local = sdata->local; 2804 int ret; 2805 2806 mutex_lock(&local->mtx); 2807 ret = ieee80211_start_roc_work(local, sdata, chan, 2808 duration, cookie, NULL, 2809 IEEE80211_ROC_TYPE_NORMAL); 2810 mutex_unlock(&local->mtx); 2811 2812 return ret; 2813 } 2814 2815 static int ieee80211_cancel_roc(struct ieee80211_local *local, 2816 u64 cookie, bool mgmt_tx) 2817 { 2818 struct ieee80211_roc_work *roc, *tmp, *found = NULL; 2819 int ret; 2820 2821 mutex_lock(&local->mtx); 2822 list_for_each_entry_safe(roc, tmp, &local->roc_list, list) { 2823 struct ieee80211_roc_work *dep, *tmp2; 2824 2825 list_for_each_entry_safe(dep, tmp2, &roc->dependents, list) { 2826 if (!mgmt_tx && dep->cookie != cookie) 2827 continue; 2828 else if (mgmt_tx && dep->mgmt_tx_cookie != cookie) 2829 continue; 2830 /* found dependent item -- just remove it */ 2831 list_del(&dep->list); 2832 mutex_unlock(&local->mtx); 2833 2834 ieee80211_roc_notify_destroy(dep, true); 2835 return 0; 2836 } 2837 2838 if (!mgmt_tx && roc->cookie != cookie) 2839 continue; 2840 else if (mgmt_tx && roc->mgmt_tx_cookie != cookie) 2841 continue; 2842 2843 found = roc; 2844 break; 2845 } 2846 2847 if (!found) { 2848 mutex_unlock(&local->mtx); 2849 return -ENOENT; 2850 } 2851 2852 /* 2853 * We found the item to cancel, so do that. Note that it 2854 * may have dependents, which we also cancel (and send 2855 * the expired signal for.) Not doing so would be quite 2856 * tricky here, but we may need to fix it later. 2857 */ 2858 2859 if (local->ops->remain_on_channel) { 2860 if (found->started) { 2861 ret = drv_cancel_remain_on_channel(local); 2862 if (WARN_ON_ONCE(ret)) { 2863 mutex_unlock(&local->mtx); 2864 return ret; 2865 } 2866 } 2867 2868 list_del(&found->list); 2869 2870 if (found->started) 2871 ieee80211_start_next_roc(local); 2872 mutex_unlock(&local->mtx); 2873 2874 ieee80211_roc_notify_destroy(found, true); 2875 } else { 2876 /* work may be pending so use it all the time */ 2877 found->abort = true; 2878 ieee80211_queue_delayed_work(&local->hw, &found->work, 0); 2879 2880 mutex_unlock(&local->mtx); 2881 2882 /* work will clean up etc */ 2883 flush_delayed_work(&found->work); 2884 WARN_ON(!found->to_be_freed); 2885 kfree(found); 2886 } 2887 2888 return 0; 2889 } 2890 2891 static int ieee80211_cancel_remain_on_channel(struct wiphy *wiphy, 2892 struct wireless_dev *wdev, 2893 u64 cookie) 2894 { 2895 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 2896 struct ieee80211_local *local = sdata->local; 2897 2898 return ieee80211_cancel_roc(local, cookie, false); 2899 } 2900 2901 static int ieee80211_start_radar_detection(struct wiphy *wiphy, 2902 struct net_device *dev, 2903 struct cfg80211_chan_def *chandef) 2904 { 2905 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2906 struct ieee80211_local *local = sdata->local; 2907 unsigned long timeout; 2908 int err; 2909 2910 mutex_lock(&local->mtx); 2911 if (!list_empty(&local->roc_list) || local->scanning) { 2912 err = -EBUSY; 2913 goto out_unlock; 2914 } 2915 2916 /* whatever, but channel contexts should not complain about that one */ 2917 sdata->smps_mode = IEEE80211_SMPS_OFF; 2918 sdata->needed_rx_chains = local->rx_chains; 2919 sdata->radar_required = true; 2920 2921 err = ieee80211_vif_use_channel(sdata, chandef, 2922 IEEE80211_CHANCTX_SHARED); 2923 if (err) 2924 goto out_unlock; 2925 2926 timeout = msecs_to_jiffies(IEEE80211_DFS_MIN_CAC_TIME_MS); 2927 ieee80211_queue_delayed_work(&sdata->local->hw, 2928 &sdata->dfs_cac_timer_work, timeout); 2929 2930 out_unlock: 2931 mutex_unlock(&local->mtx); 2932 return err; 2933 } 2934 2935 static struct cfg80211_beacon_data * 2936 cfg80211_beacon_dup(struct cfg80211_beacon_data *beacon) 2937 { 2938 struct cfg80211_beacon_data *new_beacon; 2939 u8 *pos; 2940 int len; 2941 2942 len = beacon->head_len + beacon->tail_len + beacon->beacon_ies_len + 2943 beacon->proberesp_ies_len + beacon->assocresp_ies_len + 2944 beacon->probe_resp_len; 2945 2946 new_beacon = kzalloc(sizeof(*new_beacon) + len, GFP_KERNEL); 2947 if (!new_beacon) 2948 return NULL; 2949 2950 pos = (u8 *)(new_beacon + 1); 2951 if (beacon->head_len) { 2952 new_beacon->head_len = beacon->head_len; 2953 new_beacon->head = pos; 2954 memcpy(pos, beacon->head, beacon->head_len); 2955 pos += beacon->head_len; 2956 } 2957 if (beacon->tail_len) { 2958 new_beacon->tail_len = beacon->tail_len; 2959 new_beacon->tail = pos; 2960 memcpy(pos, beacon->tail, beacon->tail_len); 2961 pos += beacon->tail_len; 2962 } 2963 if (beacon->beacon_ies_len) { 2964 new_beacon->beacon_ies_len = beacon->beacon_ies_len; 2965 new_beacon->beacon_ies = pos; 2966 memcpy(pos, beacon->beacon_ies, beacon->beacon_ies_len); 2967 pos += beacon->beacon_ies_len; 2968 } 2969 if (beacon->proberesp_ies_len) { 2970 new_beacon->proberesp_ies_len = beacon->proberesp_ies_len; 2971 new_beacon->proberesp_ies = pos; 2972 memcpy(pos, beacon->proberesp_ies, beacon->proberesp_ies_len); 2973 pos += beacon->proberesp_ies_len; 2974 } 2975 if (beacon->assocresp_ies_len) { 2976 new_beacon->assocresp_ies_len = beacon->assocresp_ies_len; 2977 new_beacon->assocresp_ies = pos; 2978 memcpy(pos, beacon->assocresp_ies, beacon->assocresp_ies_len); 2979 pos += beacon->assocresp_ies_len; 2980 } 2981 if (beacon->probe_resp_len) { 2982 new_beacon->probe_resp_len = beacon->probe_resp_len; 2983 beacon->probe_resp = pos; 2984 memcpy(pos, beacon->probe_resp, beacon->probe_resp_len); 2985 pos += beacon->probe_resp_len; 2986 } 2987 2988 return new_beacon; 2989 } 2990 2991 void ieee80211_csa_finalize_work(struct work_struct *work) 2992 { 2993 struct ieee80211_sub_if_data *sdata = 2994 container_of(work, struct ieee80211_sub_if_data, 2995 csa_finalize_work); 2996 struct ieee80211_local *local = sdata->local; 2997 int err, changed = 0; 2998 2999 sdata_lock(sdata); 3000 /* AP might have been stopped while waiting for the lock. */ 3001 if (!sdata->vif.csa_active) 3002 goto unlock; 3003 3004 if (!ieee80211_sdata_running(sdata)) 3005 goto unlock; 3006 3007 sdata->radar_required = sdata->csa_radar_required; 3008 mutex_lock(&local->mtx); 3009 err = ieee80211_vif_change_channel(sdata, &changed); 3010 mutex_unlock(&local->mtx); 3011 if (WARN_ON(err < 0)) 3012 goto unlock; 3013 3014 if (!local->use_chanctx) { 3015 local->_oper_chandef = sdata->csa_chandef; 3016 ieee80211_hw_config(local, 0); 3017 } 3018 3019 ieee80211_bss_info_change_notify(sdata, changed); 3020 3021 sdata->vif.csa_active = false; 3022 switch (sdata->vif.type) { 3023 case NL80211_IFTYPE_AP: 3024 err = ieee80211_assign_beacon(sdata, sdata->u.ap.next_beacon); 3025 if (err < 0) 3026 goto unlock; 3027 3028 changed |= err; 3029 kfree(sdata->u.ap.next_beacon); 3030 sdata->u.ap.next_beacon = NULL; 3031 3032 ieee80211_bss_info_change_notify(sdata, err); 3033 break; 3034 case NL80211_IFTYPE_ADHOC: 3035 ieee80211_ibss_finish_csa(sdata); 3036 break; 3037 #ifdef CONFIG_MAC80211_MESH 3038 case NL80211_IFTYPE_MESH_POINT: 3039 err = ieee80211_mesh_finish_csa(sdata); 3040 if (err < 0) 3041 goto unlock; 3042 break; 3043 #endif 3044 default: 3045 WARN_ON(1); 3046 goto unlock; 3047 } 3048 3049 ieee80211_wake_queues_by_reason(&sdata->local->hw, 3050 IEEE80211_MAX_QUEUE_MAP, 3051 IEEE80211_QUEUE_STOP_REASON_CSA); 3052 3053 cfg80211_ch_switch_notify(sdata->dev, &sdata->csa_chandef); 3054 3055 unlock: 3056 sdata_unlock(sdata); 3057 } 3058 3059 int ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev, 3060 struct cfg80211_csa_settings *params) 3061 { 3062 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 3063 struct ieee80211_local *local = sdata->local; 3064 struct ieee80211_chanctx_conf *chanctx_conf; 3065 struct ieee80211_chanctx *chanctx; 3066 struct ieee80211_if_mesh __maybe_unused *ifmsh; 3067 int err, num_chanctx; 3068 3069 lockdep_assert_held(&sdata->wdev.mtx); 3070 3071 if (!list_empty(&local->roc_list) || local->scanning) 3072 return -EBUSY; 3073 3074 if (sdata->wdev.cac_started) 3075 return -EBUSY; 3076 3077 if (cfg80211_chandef_identical(¶ms->chandef, 3078 &sdata->vif.bss_conf.chandef)) 3079 return -EINVAL; 3080 3081 rcu_read_lock(); 3082 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); 3083 if (!chanctx_conf) { 3084 rcu_read_unlock(); 3085 return -EBUSY; 3086 } 3087 3088 /* don't handle for multi-VIF cases */ 3089 chanctx = container_of(chanctx_conf, struct ieee80211_chanctx, conf); 3090 if (chanctx->refcount > 1) { 3091 rcu_read_unlock(); 3092 return -EBUSY; 3093 } 3094 num_chanctx = 0; 3095 list_for_each_entry_rcu(chanctx, &local->chanctx_list, list) 3096 num_chanctx++; 3097 rcu_read_unlock(); 3098 3099 if (num_chanctx > 1) 3100 return -EBUSY; 3101 3102 /* don't allow another channel switch if one is already active. */ 3103 if (sdata->vif.csa_active) 3104 return -EBUSY; 3105 3106 switch (sdata->vif.type) { 3107 case NL80211_IFTYPE_AP: 3108 sdata->csa_counter_offset_beacon = 3109 params->counter_offset_beacon; 3110 sdata->csa_counter_offset_presp = params->counter_offset_presp; 3111 sdata->u.ap.next_beacon = 3112 cfg80211_beacon_dup(¶ms->beacon_after); 3113 if (!sdata->u.ap.next_beacon) 3114 return -ENOMEM; 3115 3116 err = ieee80211_assign_beacon(sdata, ¶ms->beacon_csa); 3117 if (err < 0) { 3118 kfree(sdata->u.ap.next_beacon); 3119 return err; 3120 } 3121 break; 3122 case NL80211_IFTYPE_ADHOC: 3123 if (!sdata->vif.bss_conf.ibss_joined) 3124 return -EINVAL; 3125 3126 if (params->chandef.width != sdata->u.ibss.chandef.width) 3127 return -EINVAL; 3128 3129 switch (params->chandef.width) { 3130 case NL80211_CHAN_WIDTH_40: 3131 if (cfg80211_get_chandef_type(¶ms->chandef) != 3132 cfg80211_get_chandef_type(&sdata->u.ibss.chandef)) 3133 return -EINVAL; 3134 case NL80211_CHAN_WIDTH_5: 3135 case NL80211_CHAN_WIDTH_10: 3136 case NL80211_CHAN_WIDTH_20_NOHT: 3137 case NL80211_CHAN_WIDTH_20: 3138 break; 3139 default: 3140 return -EINVAL; 3141 } 3142 3143 /* changes into another band are not supported */ 3144 if (sdata->u.ibss.chandef.chan->band != 3145 params->chandef.chan->band) 3146 return -EINVAL; 3147 3148 err = ieee80211_ibss_csa_beacon(sdata, params); 3149 if (err < 0) 3150 return err; 3151 break; 3152 #ifdef CONFIG_MAC80211_MESH 3153 case NL80211_IFTYPE_MESH_POINT: 3154 ifmsh = &sdata->u.mesh; 3155 3156 if (!ifmsh->mesh_id) 3157 return -EINVAL; 3158 3159 if (params->chandef.width != sdata->vif.bss_conf.chandef.width) 3160 return -EINVAL; 3161 3162 /* changes into another band are not supported */ 3163 if (sdata->vif.bss_conf.chandef.chan->band != 3164 params->chandef.chan->band) 3165 return -EINVAL; 3166 3167 ifmsh->chsw_init = true; 3168 if (!ifmsh->pre_value) 3169 ifmsh->pre_value = 1; 3170 else 3171 ifmsh->pre_value++; 3172 3173 err = ieee80211_mesh_csa_beacon(sdata, params, true); 3174 if (err < 0) { 3175 ifmsh->chsw_init = false; 3176 return err; 3177 } 3178 break; 3179 #endif 3180 default: 3181 return -EOPNOTSUPP; 3182 } 3183 3184 sdata->csa_radar_required = params->radar_required; 3185 3186 if (params->block_tx) 3187 ieee80211_stop_queues_by_reason(&local->hw, 3188 IEEE80211_MAX_QUEUE_MAP, 3189 IEEE80211_QUEUE_STOP_REASON_CSA); 3190 3191 sdata->csa_chandef = params->chandef; 3192 sdata->vif.csa_active = true; 3193 3194 ieee80211_bss_info_change_notify(sdata, err); 3195 drv_channel_switch_beacon(sdata, ¶ms->chandef); 3196 3197 return 0; 3198 } 3199 3200 static int ieee80211_mgmt_tx(struct wiphy *wiphy, struct wireless_dev *wdev, 3201 struct cfg80211_mgmt_tx_params *params, 3202 u64 *cookie) 3203 { 3204 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 3205 struct ieee80211_local *local = sdata->local; 3206 struct sk_buff *skb; 3207 struct sta_info *sta; 3208 const struct ieee80211_mgmt *mgmt = (void *)params->buf; 3209 bool need_offchan = false; 3210 u32 flags; 3211 int ret; 3212 3213 if (params->dont_wait_for_ack) 3214 flags = IEEE80211_TX_CTL_NO_ACK; 3215 else 3216 flags = IEEE80211_TX_INTFL_NL80211_FRAME_TX | 3217 IEEE80211_TX_CTL_REQ_TX_STATUS; 3218 3219 if (params->no_cck) 3220 flags |= IEEE80211_TX_CTL_NO_CCK_RATE; 3221 3222 switch (sdata->vif.type) { 3223 case NL80211_IFTYPE_ADHOC: 3224 if (!sdata->vif.bss_conf.ibss_joined) 3225 need_offchan = true; 3226 /* fall through */ 3227 #ifdef CONFIG_MAC80211_MESH 3228 case NL80211_IFTYPE_MESH_POINT: 3229 if (ieee80211_vif_is_mesh(&sdata->vif) && 3230 !sdata->u.mesh.mesh_id_len) 3231 need_offchan = true; 3232 /* fall through */ 3233 #endif 3234 case NL80211_IFTYPE_AP: 3235 case NL80211_IFTYPE_AP_VLAN: 3236 case NL80211_IFTYPE_P2P_GO: 3237 if (sdata->vif.type != NL80211_IFTYPE_ADHOC && 3238 !ieee80211_vif_is_mesh(&sdata->vif) && 3239 !rcu_access_pointer(sdata->bss->beacon)) 3240 need_offchan = true; 3241 if (!ieee80211_is_action(mgmt->frame_control) || 3242 mgmt->u.action.category == WLAN_CATEGORY_PUBLIC || 3243 mgmt->u.action.category == WLAN_CATEGORY_SELF_PROTECTED || 3244 mgmt->u.action.category == WLAN_CATEGORY_SPECTRUM_MGMT) 3245 break; 3246 rcu_read_lock(); 3247 sta = sta_info_get(sdata, mgmt->da); 3248 rcu_read_unlock(); 3249 if (!sta) 3250 return -ENOLINK; 3251 break; 3252 case NL80211_IFTYPE_STATION: 3253 case NL80211_IFTYPE_P2P_CLIENT: 3254 if (!sdata->u.mgd.associated) 3255 need_offchan = true; 3256 break; 3257 case NL80211_IFTYPE_P2P_DEVICE: 3258 need_offchan = true; 3259 break; 3260 default: 3261 return -EOPNOTSUPP; 3262 } 3263 3264 /* configurations requiring offchan cannot work if no channel has been 3265 * specified 3266 */ 3267 if (need_offchan && !params->chan) 3268 return -EINVAL; 3269 3270 mutex_lock(&local->mtx); 3271 3272 /* Check if the operating channel is the requested channel */ 3273 if (!need_offchan) { 3274 struct ieee80211_chanctx_conf *chanctx_conf; 3275 3276 rcu_read_lock(); 3277 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); 3278 3279 if (chanctx_conf) { 3280 need_offchan = params->chan && 3281 (params->chan != 3282 chanctx_conf->def.chan); 3283 } else if (!params->chan) { 3284 ret = -EINVAL; 3285 rcu_read_unlock(); 3286 goto out_unlock; 3287 } else { 3288 need_offchan = true; 3289 } 3290 rcu_read_unlock(); 3291 } 3292 3293 if (need_offchan && !params->offchan) { 3294 ret = -EBUSY; 3295 goto out_unlock; 3296 } 3297 3298 skb = dev_alloc_skb(local->hw.extra_tx_headroom + params->len); 3299 if (!skb) { 3300 ret = -ENOMEM; 3301 goto out_unlock; 3302 } 3303 skb_reserve(skb, local->hw.extra_tx_headroom); 3304 3305 memcpy(skb_put(skb, params->len), params->buf, params->len); 3306 3307 IEEE80211_SKB_CB(skb)->flags = flags; 3308 3309 skb->dev = sdata->dev; 3310 3311 if (!need_offchan) { 3312 *cookie = (unsigned long) skb; 3313 ieee80211_tx_skb(sdata, skb); 3314 ret = 0; 3315 goto out_unlock; 3316 } 3317 3318 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_TX_OFFCHAN | 3319 IEEE80211_TX_INTFL_OFFCHAN_TX_OK; 3320 if (local->hw.flags & IEEE80211_HW_QUEUE_CONTROL) 3321 IEEE80211_SKB_CB(skb)->hw_queue = 3322 local->hw.offchannel_tx_hw_queue; 3323 3324 /* This will handle all kinds of coalescing and immediate TX */ 3325 ret = ieee80211_start_roc_work(local, sdata, params->chan, 3326 params->wait, cookie, skb, 3327 IEEE80211_ROC_TYPE_MGMT_TX); 3328 if (ret) 3329 kfree_skb(skb); 3330 out_unlock: 3331 mutex_unlock(&local->mtx); 3332 return ret; 3333 } 3334 3335 static int ieee80211_mgmt_tx_cancel_wait(struct wiphy *wiphy, 3336 struct wireless_dev *wdev, 3337 u64 cookie) 3338 { 3339 struct ieee80211_local *local = wiphy_priv(wiphy); 3340 3341 return ieee80211_cancel_roc(local, cookie, true); 3342 } 3343 3344 static void ieee80211_mgmt_frame_register(struct wiphy *wiphy, 3345 struct wireless_dev *wdev, 3346 u16 frame_type, bool reg) 3347 { 3348 struct ieee80211_local *local = wiphy_priv(wiphy); 3349 3350 switch (frame_type) { 3351 case IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_PROBE_REQ: 3352 if (reg) 3353 local->probe_req_reg++; 3354 else 3355 local->probe_req_reg--; 3356 3357 if (!local->open_count) 3358 break; 3359 3360 ieee80211_queue_work(&local->hw, &local->reconfig_filter); 3361 break; 3362 default: 3363 break; 3364 } 3365 } 3366 3367 static int ieee80211_set_antenna(struct wiphy *wiphy, u32 tx_ant, u32 rx_ant) 3368 { 3369 struct ieee80211_local *local = wiphy_priv(wiphy); 3370 3371 if (local->started) 3372 return -EOPNOTSUPP; 3373 3374 return drv_set_antenna(local, tx_ant, rx_ant); 3375 } 3376 3377 static int ieee80211_get_antenna(struct wiphy *wiphy, u32 *tx_ant, u32 *rx_ant) 3378 { 3379 struct ieee80211_local *local = wiphy_priv(wiphy); 3380 3381 return drv_get_antenna(local, tx_ant, rx_ant); 3382 } 3383 3384 static int ieee80211_set_ringparam(struct wiphy *wiphy, u32 tx, u32 rx) 3385 { 3386 struct ieee80211_local *local = wiphy_priv(wiphy); 3387 3388 return drv_set_ringparam(local, tx, rx); 3389 } 3390 3391 static void ieee80211_get_ringparam(struct wiphy *wiphy, 3392 u32 *tx, u32 *tx_max, u32 *rx, u32 *rx_max) 3393 { 3394 struct ieee80211_local *local = wiphy_priv(wiphy); 3395 3396 drv_get_ringparam(local, tx, tx_max, rx, rx_max); 3397 } 3398 3399 static int ieee80211_set_rekey_data(struct wiphy *wiphy, 3400 struct net_device *dev, 3401 struct cfg80211_gtk_rekey_data *data) 3402 { 3403 struct ieee80211_local *local = wiphy_priv(wiphy); 3404 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 3405 3406 if (!local->ops->set_rekey_data) 3407 return -EOPNOTSUPP; 3408 3409 drv_set_rekey_data(local, sdata, data); 3410 3411 return 0; 3412 } 3413 3414 static void ieee80211_tdls_add_ext_capab(struct sk_buff *skb) 3415 { 3416 u8 *pos = (void *)skb_put(skb, 7); 3417 3418 *pos++ = WLAN_EID_EXT_CAPABILITY; 3419 *pos++ = 5; /* len */ 3420 *pos++ = 0x0; 3421 *pos++ = 0x0; 3422 *pos++ = 0x0; 3423 *pos++ = 0x0; 3424 *pos++ = WLAN_EXT_CAPA5_TDLS_ENABLED; 3425 } 3426 3427 static u16 ieee80211_get_tdls_sta_capab(struct ieee80211_sub_if_data *sdata) 3428 { 3429 struct ieee80211_local *local = sdata->local; 3430 u16 capab; 3431 3432 capab = 0; 3433 if (ieee80211_get_sdata_band(sdata) != IEEE80211_BAND_2GHZ) 3434 return capab; 3435 3436 if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_SLOT_INCAPABLE)) 3437 capab |= WLAN_CAPABILITY_SHORT_SLOT_TIME; 3438 if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_PREAMBLE_INCAPABLE)) 3439 capab |= WLAN_CAPABILITY_SHORT_PREAMBLE; 3440 3441 return capab; 3442 } 3443 3444 static void ieee80211_tdls_add_link_ie(struct sk_buff *skb, u8 *src_addr, 3445 u8 *peer, u8 *bssid) 3446 { 3447 struct ieee80211_tdls_lnkie *lnkid; 3448 3449 lnkid = (void *)skb_put(skb, sizeof(struct ieee80211_tdls_lnkie)); 3450 3451 lnkid->ie_type = WLAN_EID_LINK_ID; 3452 lnkid->ie_len = sizeof(struct ieee80211_tdls_lnkie) - 2; 3453 3454 memcpy(lnkid->bssid, bssid, ETH_ALEN); 3455 memcpy(lnkid->init_sta, src_addr, ETH_ALEN); 3456 memcpy(lnkid->resp_sta, peer, ETH_ALEN); 3457 } 3458 3459 static int 3460 ieee80211_prep_tdls_encap_data(struct wiphy *wiphy, struct net_device *dev, 3461 u8 *peer, u8 action_code, u8 dialog_token, 3462 u16 status_code, struct sk_buff *skb) 3463 { 3464 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 3465 enum ieee80211_band band = ieee80211_get_sdata_band(sdata); 3466 struct ieee80211_tdls_data *tf; 3467 3468 tf = (void *)skb_put(skb, offsetof(struct ieee80211_tdls_data, u)); 3469 3470 memcpy(tf->da, peer, ETH_ALEN); 3471 memcpy(tf->sa, sdata->vif.addr, ETH_ALEN); 3472 tf->ether_type = cpu_to_be16(ETH_P_TDLS); 3473 tf->payload_type = WLAN_TDLS_SNAP_RFTYPE; 3474 3475 switch (action_code) { 3476 case WLAN_TDLS_SETUP_REQUEST: 3477 tf->category = WLAN_CATEGORY_TDLS; 3478 tf->action_code = WLAN_TDLS_SETUP_REQUEST; 3479 3480 skb_put(skb, sizeof(tf->u.setup_req)); 3481 tf->u.setup_req.dialog_token = dialog_token; 3482 tf->u.setup_req.capability = 3483 cpu_to_le16(ieee80211_get_tdls_sta_capab(sdata)); 3484 3485 ieee80211_add_srates_ie(sdata, skb, false, band); 3486 ieee80211_add_ext_srates_ie(sdata, skb, false, band); 3487 ieee80211_tdls_add_ext_capab(skb); 3488 break; 3489 case WLAN_TDLS_SETUP_RESPONSE: 3490 tf->category = WLAN_CATEGORY_TDLS; 3491 tf->action_code = WLAN_TDLS_SETUP_RESPONSE; 3492 3493 skb_put(skb, sizeof(tf->u.setup_resp)); 3494 tf->u.setup_resp.status_code = cpu_to_le16(status_code); 3495 tf->u.setup_resp.dialog_token = dialog_token; 3496 tf->u.setup_resp.capability = 3497 cpu_to_le16(ieee80211_get_tdls_sta_capab(sdata)); 3498 3499 ieee80211_add_srates_ie(sdata, skb, false, band); 3500 ieee80211_add_ext_srates_ie(sdata, skb, false, band); 3501 ieee80211_tdls_add_ext_capab(skb); 3502 break; 3503 case WLAN_TDLS_SETUP_CONFIRM: 3504 tf->category = WLAN_CATEGORY_TDLS; 3505 tf->action_code = WLAN_TDLS_SETUP_CONFIRM; 3506 3507 skb_put(skb, sizeof(tf->u.setup_cfm)); 3508 tf->u.setup_cfm.status_code = cpu_to_le16(status_code); 3509 tf->u.setup_cfm.dialog_token = dialog_token; 3510 break; 3511 case WLAN_TDLS_TEARDOWN: 3512 tf->category = WLAN_CATEGORY_TDLS; 3513 tf->action_code = WLAN_TDLS_TEARDOWN; 3514 3515 skb_put(skb, sizeof(tf->u.teardown)); 3516 tf->u.teardown.reason_code = cpu_to_le16(status_code); 3517 break; 3518 case WLAN_TDLS_DISCOVERY_REQUEST: 3519 tf->category = WLAN_CATEGORY_TDLS; 3520 tf->action_code = WLAN_TDLS_DISCOVERY_REQUEST; 3521 3522 skb_put(skb, sizeof(tf->u.discover_req)); 3523 tf->u.discover_req.dialog_token = dialog_token; 3524 break; 3525 default: 3526 return -EINVAL; 3527 } 3528 3529 return 0; 3530 } 3531 3532 static int 3533 ieee80211_prep_tdls_direct(struct wiphy *wiphy, struct net_device *dev, 3534 u8 *peer, u8 action_code, u8 dialog_token, 3535 u16 status_code, struct sk_buff *skb) 3536 { 3537 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 3538 enum ieee80211_band band = ieee80211_get_sdata_band(sdata); 3539 struct ieee80211_mgmt *mgmt; 3540 3541 mgmt = (void *)skb_put(skb, 24); 3542 memset(mgmt, 0, 24); 3543 memcpy(mgmt->da, peer, ETH_ALEN); 3544 memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN); 3545 memcpy(mgmt->bssid, sdata->u.mgd.bssid, ETH_ALEN); 3546 3547 mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | 3548 IEEE80211_STYPE_ACTION); 3549 3550 switch (action_code) { 3551 case WLAN_PUB_ACTION_TDLS_DISCOVER_RES: 3552 skb_put(skb, 1 + sizeof(mgmt->u.action.u.tdls_discover_resp)); 3553 mgmt->u.action.category = WLAN_CATEGORY_PUBLIC; 3554 mgmt->u.action.u.tdls_discover_resp.action_code = 3555 WLAN_PUB_ACTION_TDLS_DISCOVER_RES; 3556 mgmt->u.action.u.tdls_discover_resp.dialog_token = 3557 dialog_token; 3558 mgmt->u.action.u.tdls_discover_resp.capability = 3559 cpu_to_le16(ieee80211_get_tdls_sta_capab(sdata)); 3560 3561 ieee80211_add_srates_ie(sdata, skb, false, band); 3562 ieee80211_add_ext_srates_ie(sdata, skb, false, band); 3563 ieee80211_tdls_add_ext_capab(skb); 3564 break; 3565 default: 3566 return -EINVAL; 3567 } 3568 3569 return 0; 3570 } 3571 3572 static int ieee80211_tdls_mgmt(struct wiphy *wiphy, struct net_device *dev, 3573 u8 *peer, u8 action_code, u8 dialog_token, 3574 u16 status_code, const u8 *extra_ies, 3575 size_t extra_ies_len) 3576 { 3577 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 3578 struct ieee80211_local *local = sdata->local; 3579 struct sk_buff *skb = NULL; 3580 bool send_direct; 3581 int ret; 3582 3583 if (!(wiphy->flags & WIPHY_FLAG_SUPPORTS_TDLS)) 3584 return -ENOTSUPP; 3585 3586 /* make sure we are in managed mode, and associated */ 3587 if (sdata->vif.type != NL80211_IFTYPE_STATION || 3588 !sdata->u.mgd.associated) 3589 return -EINVAL; 3590 3591 tdls_dbg(sdata, "TDLS mgmt action %d peer %pM\n", 3592 action_code, peer); 3593 3594 skb = dev_alloc_skb(local->hw.extra_tx_headroom + 3595 max(sizeof(struct ieee80211_mgmt), 3596 sizeof(struct ieee80211_tdls_data)) + 3597 50 + /* supported rates */ 3598 7 + /* ext capab */ 3599 extra_ies_len + 3600 sizeof(struct ieee80211_tdls_lnkie)); 3601 if (!skb) 3602 return -ENOMEM; 3603 3604 skb_reserve(skb, local->hw.extra_tx_headroom); 3605 3606 switch (action_code) { 3607 case WLAN_TDLS_SETUP_REQUEST: 3608 case WLAN_TDLS_SETUP_RESPONSE: 3609 case WLAN_TDLS_SETUP_CONFIRM: 3610 case WLAN_TDLS_TEARDOWN: 3611 case WLAN_TDLS_DISCOVERY_REQUEST: 3612 ret = ieee80211_prep_tdls_encap_data(wiphy, dev, peer, 3613 action_code, dialog_token, 3614 status_code, skb); 3615 send_direct = false; 3616 break; 3617 case WLAN_PUB_ACTION_TDLS_DISCOVER_RES: 3618 ret = ieee80211_prep_tdls_direct(wiphy, dev, peer, action_code, 3619 dialog_token, status_code, 3620 skb); 3621 send_direct = true; 3622 break; 3623 default: 3624 ret = -ENOTSUPP; 3625 break; 3626 } 3627 3628 if (ret < 0) 3629 goto fail; 3630 3631 if (extra_ies_len) 3632 memcpy(skb_put(skb, extra_ies_len), extra_ies, extra_ies_len); 3633 3634 /* the TDLS link IE is always added last */ 3635 switch (action_code) { 3636 case WLAN_TDLS_SETUP_REQUEST: 3637 case WLAN_TDLS_SETUP_CONFIRM: 3638 case WLAN_TDLS_TEARDOWN: 3639 case WLAN_TDLS_DISCOVERY_REQUEST: 3640 /* we are the initiator */ 3641 ieee80211_tdls_add_link_ie(skb, sdata->vif.addr, peer, 3642 sdata->u.mgd.bssid); 3643 break; 3644 case WLAN_TDLS_SETUP_RESPONSE: 3645 case WLAN_PUB_ACTION_TDLS_DISCOVER_RES: 3646 /* we are the responder */ 3647 ieee80211_tdls_add_link_ie(skb, peer, sdata->vif.addr, 3648 sdata->u.mgd.bssid); 3649 break; 3650 default: 3651 ret = -ENOTSUPP; 3652 goto fail; 3653 } 3654 3655 if (send_direct) { 3656 ieee80211_tx_skb(sdata, skb); 3657 return 0; 3658 } 3659 3660 /* 3661 * According to 802.11z: Setup req/resp are sent in AC_BK, otherwise 3662 * we should default to AC_VI. 3663 */ 3664 switch (action_code) { 3665 case WLAN_TDLS_SETUP_REQUEST: 3666 case WLAN_TDLS_SETUP_RESPONSE: 3667 skb_set_queue_mapping(skb, IEEE80211_AC_BK); 3668 skb->priority = 2; 3669 break; 3670 default: 3671 skb_set_queue_mapping(skb, IEEE80211_AC_VI); 3672 skb->priority = 5; 3673 break; 3674 } 3675 3676 /* disable bottom halves when entering the Tx path */ 3677 local_bh_disable(); 3678 ret = ieee80211_subif_start_xmit(skb, dev); 3679 local_bh_enable(); 3680 3681 return ret; 3682 3683 fail: 3684 dev_kfree_skb(skb); 3685 return ret; 3686 } 3687 3688 static int ieee80211_tdls_oper(struct wiphy *wiphy, struct net_device *dev, 3689 u8 *peer, enum nl80211_tdls_operation oper) 3690 { 3691 struct sta_info *sta; 3692 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 3693 3694 if (!(wiphy->flags & WIPHY_FLAG_SUPPORTS_TDLS)) 3695 return -ENOTSUPP; 3696 3697 if (sdata->vif.type != NL80211_IFTYPE_STATION) 3698 return -EINVAL; 3699 3700 tdls_dbg(sdata, "TDLS oper %d peer %pM\n", oper, peer); 3701 3702 switch (oper) { 3703 case NL80211_TDLS_ENABLE_LINK: 3704 rcu_read_lock(); 3705 sta = sta_info_get(sdata, peer); 3706 if (!sta) { 3707 rcu_read_unlock(); 3708 return -ENOLINK; 3709 } 3710 3711 set_sta_flag(sta, WLAN_STA_TDLS_PEER_AUTH); 3712 rcu_read_unlock(); 3713 break; 3714 case NL80211_TDLS_DISABLE_LINK: 3715 return sta_info_destroy_addr(sdata, peer); 3716 case NL80211_TDLS_TEARDOWN: 3717 case NL80211_TDLS_SETUP: 3718 case NL80211_TDLS_DISCOVERY_REQ: 3719 /* We don't support in-driver setup/teardown/discovery */ 3720 return -ENOTSUPP; 3721 default: 3722 return -ENOTSUPP; 3723 } 3724 3725 return 0; 3726 } 3727 3728 static int ieee80211_probe_client(struct wiphy *wiphy, struct net_device *dev, 3729 const u8 *peer, u64 *cookie) 3730 { 3731 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 3732 struct ieee80211_local *local = sdata->local; 3733 struct ieee80211_qos_hdr *nullfunc; 3734 struct sk_buff *skb; 3735 int size = sizeof(*nullfunc); 3736 __le16 fc; 3737 bool qos; 3738 struct ieee80211_tx_info *info; 3739 struct sta_info *sta; 3740 struct ieee80211_chanctx_conf *chanctx_conf; 3741 enum ieee80211_band band; 3742 3743 rcu_read_lock(); 3744 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); 3745 if (WARN_ON(!chanctx_conf)) { 3746 rcu_read_unlock(); 3747 return -EINVAL; 3748 } 3749 band = chanctx_conf->def.chan->band; 3750 sta = sta_info_get_bss(sdata, peer); 3751 if (sta) { 3752 qos = test_sta_flag(sta, WLAN_STA_WME); 3753 } else { 3754 rcu_read_unlock(); 3755 return -ENOLINK; 3756 } 3757 3758 if (qos) { 3759 fc = cpu_to_le16(IEEE80211_FTYPE_DATA | 3760 IEEE80211_STYPE_QOS_NULLFUNC | 3761 IEEE80211_FCTL_FROMDS); 3762 } else { 3763 size -= 2; 3764 fc = cpu_to_le16(IEEE80211_FTYPE_DATA | 3765 IEEE80211_STYPE_NULLFUNC | 3766 IEEE80211_FCTL_FROMDS); 3767 } 3768 3769 skb = dev_alloc_skb(local->hw.extra_tx_headroom + size); 3770 if (!skb) { 3771 rcu_read_unlock(); 3772 return -ENOMEM; 3773 } 3774 3775 skb->dev = dev; 3776 3777 skb_reserve(skb, local->hw.extra_tx_headroom); 3778 3779 nullfunc = (void *) skb_put(skb, size); 3780 nullfunc->frame_control = fc; 3781 nullfunc->duration_id = 0; 3782 memcpy(nullfunc->addr1, sta->sta.addr, ETH_ALEN); 3783 memcpy(nullfunc->addr2, sdata->vif.addr, ETH_ALEN); 3784 memcpy(nullfunc->addr3, sdata->vif.addr, ETH_ALEN); 3785 nullfunc->seq_ctrl = 0; 3786 3787 info = IEEE80211_SKB_CB(skb); 3788 3789 info->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS | 3790 IEEE80211_TX_INTFL_NL80211_FRAME_TX; 3791 3792 skb_set_queue_mapping(skb, IEEE80211_AC_VO); 3793 skb->priority = 7; 3794 if (qos) 3795 nullfunc->qos_ctrl = cpu_to_le16(7); 3796 3797 local_bh_disable(); 3798 ieee80211_xmit(sdata, skb, band); 3799 local_bh_enable(); 3800 rcu_read_unlock(); 3801 3802 *cookie = (unsigned long) skb; 3803 return 0; 3804 } 3805 3806 static int ieee80211_cfg_get_channel(struct wiphy *wiphy, 3807 struct wireless_dev *wdev, 3808 struct cfg80211_chan_def *chandef) 3809 { 3810 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 3811 struct ieee80211_local *local = wiphy_priv(wiphy); 3812 struct ieee80211_chanctx_conf *chanctx_conf; 3813 int ret = -ENODATA; 3814 3815 rcu_read_lock(); 3816 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); 3817 if (chanctx_conf) { 3818 *chandef = chanctx_conf->def; 3819 ret = 0; 3820 } else if (local->open_count > 0 && 3821 local->open_count == local->monitors && 3822 sdata->vif.type == NL80211_IFTYPE_MONITOR) { 3823 if (local->use_chanctx) 3824 *chandef = local->monitor_chandef; 3825 else 3826 *chandef = local->_oper_chandef; 3827 ret = 0; 3828 } 3829 rcu_read_unlock(); 3830 3831 return ret; 3832 } 3833 3834 #ifdef CONFIG_PM 3835 static void ieee80211_set_wakeup(struct wiphy *wiphy, bool enabled) 3836 { 3837 drv_set_wakeup(wiphy_priv(wiphy), enabled); 3838 } 3839 #endif 3840 3841 static int ieee80211_set_qos_map(struct wiphy *wiphy, 3842 struct net_device *dev, 3843 struct cfg80211_qos_map *qos_map) 3844 { 3845 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 3846 struct mac80211_qos_map *new_qos_map, *old_qos_map; 3847 3848 if (qos_map) { 3849 new_qos_map = kzalloc(sizeof(*new_qos_map), GFP_KERNEL); 3850 if (!new_qos_map) 3851 return -ENOMEM; 3852 memcpy(&new_qos_map->qos_map, qos_map, sizeof(*qos_map)); 3853 } else { 3854 /* A NULL qos_map was passed to disable QoS mapping */ 3855 new_qos_map = NULL; 3856 } 3857 3858 old_qos_map = sdata_dereference(sdata->qos_map, sdata); 3859 rcu_assign_pointer(sdata->qos_map, new_qos_map); 3860 if (old_qos_map) 3861 kfree_rcu(old_qos_map, rcu_head); 3862 3863 return 0; 3864 } 3865 3866 struct cfg80211_ops mac80211_config_ops = { 3867 .add_virtual_intf = ieee80211_add_iface, 3868 .del_virtual_intf = ieee80211_del_iface, 3869 .change_virtual_intf = ieee80211_change_iface, 3870 .start_p2p_device = ieee80211_start_p2p_device, 3871 .stop_p2p_device = ieee80211_stop_p2p_device, 3872 .add_key = ieee80211_add_key, 3873 .del_key = ieee80211_del_key, 3874 .get_key = ieee80211_get_key, 3875 .set_default_key = ieee80211_config_default_key, 3876 .set_default_mgmt_key = ieee80211_config_default_mgmt_key, 3877 .start_ap = ieee80211_start_ap, 3878 .change_beacon = ieee80211_change_beacon, 3879 .stop_ap = ieee80211_stop_ap, 3880 .add_station = ieee80211_add_station, 3881 .del_station = ieee80211_del_station, 3882 .change_station = ieee80211_change_station, 3883 .get_station = ieee80211_get_station, 3884 .dump_station = ieee80211_dump_station, 3885 .dump_survey = ieee80211_dump_survey, 3886 #ifdef CONFIG_MAC80211_MESH 3887 .add_mpath = ieee80211_add_mpath, 3888 .del_mpath = ieee80211_del_mpath, 3889 .change_mpath = ieee80211_change_mpath, 3890 .get_mpath = ieee80211_get_mpath, 3891 .dump_mpath = ieee80211_dump_mpath, 3892 .update_mesh_config = ieee80211_update_mesh_config, 3893 .get_mesh_config = ieee80211_get_mesh_config, 3894 .join_mesh = ieee80211_join_mesh, 3895 .leave_mesh = ieee80211_leave_mesh, 3896 #endif 3897 .change_bss = ieee80211_change_bss, 3898 .set_txq_params = ieee80211_set_txq_params, 3899 .set_monitor_channel = ieee80211_set_monitor_channel, 3900 .suspend = ieee80211_suspend, 3901 .resume = ieee80211_resume, 3902 .scan = ieee80211_scan, 3903 .sched_scan_start = ieee80211_sched_scan_start, 3904 .sched_scan_stop = ieee80211_sched_scan_stop, 3905 .auth = ieee80211_auth, 3906 .assoc = ieee80211_assoc, 3907 .deauth = ieee80211_deauth, 3908 .disassoc = ieee80211_disassoc, 3909 .join_ibss = ieee80211_join_ibss, 3910 .leave_ibss = ieee80211_leave_ibss, 3911 .set_mcast_rate = ieee80211_set_mcast_rate, 3912 .set_wiphy_params = ieee80211_set_wiphy_params, 3913 .set_tx_power = ieee80211_set_tx_power, 3914 .get_tx_power = ieee80211_get_tx_power, 3915 .set_wds_peer = ieee80211_set_wds_peer, 3916 .rfkill_poll = ieee80211_rfkill_poll, 3917 CFG80211_TESTMODE_CMD(ieee80211_testmode_cmd) 3918 CFG80211_TESTMODE_DUMP(ieee80211_testmode_dump) 3919 .set_power_mgmt = ieee80211_set_power_mgmt, 3920 .set_bitrate_mask = ieee80211_set_bitrate_mask, 3921 .remain_on_channel = ieee80211_remain_on_channel, 3922 .cancel_remain_on_channel = ieee80211_cancel_remain_on_channel, 3923 .mgmt_tx = ieee80211_mgmt_tx, 3924 .mgmt_tx_cancel_wait = ieee80211_mgmt_tx_cancel_wait, 3925 .set_cqm_rssi_config = ieee80211_set_cqm_rssi_config, 3926 .mgmt_frame_register = ieee80211_mgmt_frame_register, 3927 .set_antenna = ieee80211_set_antenna, 3928 .get_antenna = ieee80211_get_antenna, 3929 .set_ringparam = ieee80211_set_ringparam, 3930 .get_ringparam = ieee80211_get_ringparam, 3931 .set_rekey_data = ieee80211_set_rekey_data, 3932 .tdls_oper = ieee80211_tdls_oper, 3933 .tdls_mgmt = ieee80211_tdls_mgmt, 3934 .probe_client = ieee80211_probe_client, 3935 .set_noack_map = ieee80211_set_noack_map, 3936 #ifdef CONFIG_PM 3937 .set_wakeup = ieee80211_set_wakeup, 3938 #endif 3939 .get_et_sset_count = ieee80211_get_et_sset_count, 3940 .get_et_stats = ieee80211_get_et_stats, 3941 .get_et_strings = ieee80211_get_et_strings, 3942 .get_channel = ieee80211_cfg_get_channel, 3943 .start_radar_detection = ieee80211_start_radar_detection, 3944 .channel_switch = ieee80211_channel_switch, 3945 .set_qos_map = ieee80211_set_qos_map, 3946 }; 3947