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_vht_flag & RX_VHT_FLAG_80MHZ) 455 rinfo->flags |= RATE_INFO_FLAGS_80_MHZ_WIDTH; 456 if (sta->last_rx_rate_vht_flag & RX_VHT_FLAG_80P80MHZ) 457 rinfo->flags |= RATE_INFO_FLAGS_80P80_MHZ_WIDTH; 458 if (sta->last_rx_rate_vht_flag & RX_VHT_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; 973 974 mutex_lock(&local->mtx); 975 sdata->radar_required = params->radar_required; 976 err = ieee80211_vif_use_channel(sdata, ¶ms->chandef, 977 IEEE80211_CHANCTX_SHARED); 978 mutex_unlock(&local->mtx); 979 if (err) 980 return err; 981 ieee80211_vif_copy_chanctx_to_vlans(sdata, false); 982 983 /* 984 * Apply control port protocol, this allows us to 985 * not encrypt dynamic WEP control frames. 986 */ 987 sdata->control_port_protocol = params->crypto.control_port_ethertype; 988 sdata->control_port_no_encrypt = params->crypto.control_port_no_encrypt; 989 sdata->encrypt_headroom = ieee80211_cs_headroom(sdata->local, 990 ¶ms->crypto, 991 sdata->vif.type); 992 993 list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) { 994 vlan->control_port_protocol = 995 params->crypto.control_port_ethertype; 996 vlan->control_port_no_encrypt = 997 params->crypto.control_port_no_encrypt; 998 vlan->encrypt_headroom = 999 ieee80211_cs_headroom(sdata->local, 1000 ¶ms->crypto, 1001 vlan->vif.type); 1002 } 1003 1004 sdata->vif.bss_conf.beacon_int = params->beacon_interval; 1005 sdata->vif.bss_conf.dtim_period = params->dtim_period; 1006 sdata->vif.bss_conf.enable_beacon = true; 1007 1008 sdata->vif.bss_conf.ssid_len = params->ssid_len; 1009 if (params->ssid_len) 1010 memcpy(sdata->vif.bss_conf.ssid, params->ssid, 1011 params->ssid_len); 1012 sdata->vif.bss_conf.hidden_ssid = 1013 (params->hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE); 1014 1015 memset(&sdata->vif.bss_conf.p2p_noa_attr, 0, 1016 sizeof(sdata->vif.bss_conf.p2p_noa_attr)); 1017 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow = 1018 params->p2p_ctwindow & IEEE80211_P2P_OPPPS_CTWINDOW_MASK; 1019 if (params->p2p_opp_ps) 1020 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |= 1021 IEEE80211_P2P_OPPPS_ENABLE_BIT; 1022 1023 err = ieee80211_assign_beacon(sdata, ¶ms->beacon); 1024 if (err < 0) { 1025 ieee80211_vif_release_channel(sdata); 1026 return err; 1027 } 1028 changed |= err; 1029 1030 err = drv_start_ap(sdata->local, sdata); 1031 if (err) { 1032 old = sdata_dereference(sdata->u.ap.beacon, sdata); 1033 1034 if (old) 1035 kfree_rcu(old, rcu_head); 1036 RCU_INIT_POINTER(sdata->u.ap.beacon, NULL); 1037 ieee80211_vif_release_channel(sdata); 1038 return err; 1039 } 1040 1041 ieee80211_recalc_dtim(local, sdata); 1042 ieee80211_bss_info_change_notify(sdata, changed); 1043 1044 netif_carrier_on(dev); 1045 list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) 1046 netif_carrier_on(vlan->dev); 1047 1048 return 0; 1049 } 1050 1051 static int ieee80211_change_beacon(struct wiphy *wiphy, struct net_device *dev, 1052 struct cfg80211_beacon_data *params) 1053 { 1054 struct ieee80211_sub_if_data *sdata; 1055 struct beacon_data *old; 1056 int err; 1057 1058 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1059 sdata_assert_lock(sdata); 1060 1061 /* don't allow changing the beacon while CSA is in place - offset 1062 * of channel switch counter may change 1063 */ 1064 if (sdata->vif.csa_active) 1065 return -EBUSY; 1066 1067 old = sdata_dereference(sdata->u.ap.beacon, sdata); 1068 if (!old) 1069 return -ENOENT; 1070 1071 err = ieee80211_assign_beacon(sdata, params); 1072 if (err < 0) 1073 return err; 1074 ieee80211_bss_info_change_notify(sdata, err); 1075 return 0; 1076 } 1077 1078 static int ieee80211_stop_ap(struct wiphy *wiphy, struct net_device *dev) 1079 { 1080 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1081 struct ieee80211_sub_if_data *vlan; 1082 struct ieee80211_local *local = sdata->local; 1083 struct beacon_data *old_beacon; 1084 struct probe_resp *old_probe_resp; 1085 struct cfg80211_chan_def chandef; 1086 1087 sdata_assert_lock(sdata); 1088 1089 old_beacon = sdata_dereference(sdata->u.ap.beacon, sdata); 1090 if (!old_beacon) 1091 return -ENOENT; 1092 old_probe_resp = sdata_dereference(sdata->u.ap.probe_resp, sdata); 1093 1094 /* abort any running channel switch */ 1095 sdata->vif.csa_active = false; 1096 kfree(sdata->u.ap.next_beacon); 1097 sdata->u.ap.next_beacon = NULL; 1098 1099 /* turn off carrier for this interface and dependent VLANs */ 1100 list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) 1101 netif_carrier_off(vlan->dev); 1102 netif_carrier_off(dev); 1103 1104 /* remove beacon and probe response */ 1105 RCU_INIT_POINTER(sdata->u.ap.beacon, NULL); 1106 RCU_INIT_POINTER(sdata->u.ap.probe_resp, NULL); 1107 kfree_rcu(old_beacon, rcu_head); 1108 if (old_probe_resp) 1109 kfree_rcu(old_probe_resp, rcu_head); 1110 sdata->u.ap.driver_smps_mode = IEEE80211_SMPS_OFF; 1111 1112 __sta_info_flush(sdata, true); 1113 ieee80211_free_keys(sdata, true); 1114 1115 sdata->vif.bss_conf.enable_beacon = false; 1116 sdata->vif.bss_conf.ssid_len = 0; 1117 clear_bit(SDATA_STATE_OFFCHANNEL_BEACON_STOPPED, &sdata->state); 1118 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED); 1119 1120 if (sdata->wdev.cac_started) { 1121 chandef = sdata->vif.bss_conf.chandef; 1122 cancel_delayed_work_sync(&sdata->dfs_cac_timer_work); 1123 cfg80211_cac_event(sdata->dev, &chandef, 1124 NL80211_RADAR_CAC_ABORTED, 1125 GFP_KERNEL); 1126 } 1127 1128 drv_stop_ap(sdata->local, sdata); 1129 1130 /* free all potentially still buffered bcast frames */ 1131 local->total_ps_buffered -= skb_queue_len(&sdata->u.ap.ps.bc_buf); 1132 skb_queue_purge(&sdata->u.ap.ps.bc_buf); 1133 1134 ieee80211_vif_copy_chanctx_to_vlans(sdata, true); 1135 mutex_lock(&local->mtx); 1136 ieee80211_vif_release_channel(sdata); 1137 mutex_unlock(&local->mtx); 1138 1139 return 0; 1140 } 1141 1142 /* Layer 2 Update frame (802.2 Type 1 LLC XID Update response) */ 1143 struct iapp_layer2_update { 1144 u8 da[ETH_ALEN]; /* broadcast */ 1145 u8 sa[ETH_ALEN]; /* STA addr */ 1146 __be16 len; /* 6 */ 1147 u8 dsap; /* 0 */ 1148 u8 ssap; /* 0 */ 1149 u8 control; 1150 u8 xid_info[3]; 1151 } __packed; 1152 1153 static void ieee80211_send_layer2_update(struct sta_info *sta) 1154 { 1155 struct iapp_layer2_update *msg; 1156 struct sk_buff *skb; 1157 1158 /* Send Level 2 Update Frame to update forwarding tables in layer 2 1159 * bridge devices */ 1160 1161 skb = dev_alloc_skb(sizeof(*msg)); 1162 if (!skb) 1163 return; 1164 msg = (struct iapp_layer2_update *)skb_put(skb, sizeof(*msg)); 1165 1166 /* 802.2 Type 1 Logical Link Control (LLC) Exchange Identifier (XID) 1167 * Update response frame; IEEE Std 802.2-1998, 5.4.1.2.1 */ 1168 1169 eth_broadcast_addr(msg->da); 1170 memcpy(msg->sa, sta->sta.addr, ETH_ALEN); 1171 msg->len = htons(6); 1172 msg->dsap = 0; 1173 msg->ssap = 0x01; /* NULL LSAP, CR Bit: Response */ 1174 msg->control = 0xaf; /* XID response lsb.1111F101. 1175 * F=0 (no poll command; unsolicited frame) */ 1176 msg->xid_info[0] = 0x81; /* XID format identifier */ 1177 msg->xid_info[1] = 1; /* LLC types/classes: Type 1 LLC */ 1178 msg->xid_info[2] = 0; /* XID sender's receive window size (RW) */ 1179 1180 skb->dev = sta->sdata->dev; 1181 skb->protocol = eth_type_trans(skb, sta->sdata->dev); 1182 memset(skb->cb, 0, sizeof(skb->cb)); 1183 netif_rx_ni(skb); 1184 } 1185 1186 static int sta_apply_auth_flags(struct ieee80211_local *local, 1187 struct sta_info *sta, 1188 u32 mask, u32 set) 1189 { 1190 int ret; 1191 1192 if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED) && 1193 set & BIT(NL80211_STA_FLAG_AUTHENTICATED) && 1194 !test_sta_flag(sta, WLAN_STA_AUTH)) { 1195 ret = sta_info_move_state(sta, IEEE80211_STA_AUTH); 1196 if (ret) 1197 return ret; 1198 } 1199 1200 if (mask & BIT(NL80211_STA_FLAG_ASSOCIATED) && 1201 set & BIT(NL80211_STA_FLAG_ASSOCIATED) && 1202 !test_sta_flag(sta, WLAN_STA_ASSOC)) { 1203 ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC); 1204 if (ret) 1205 return ret; 1206 } 1207 1208 if (mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) { 1209 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED)) 1210 ret = sta_info_move_state(sta, IEEE80211_STA_AUTHORIZED); 1211 else if (test_sta_flag(sta, WLAN_STA_AUTHORIZED)) 1212 ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC); 1213 else 1214 ret = 0; 1215 if (ret) 1216 return ret; 1217 } 1218 1219 if (mask & BIT(NL80211_STA_FLAG_ASSOCIATED) && 1220 !(set & BIT(NL80211_STA_FLAG_ASSOCIATED)) && 1221 test_sta_flag(sta, WLAN_STA_ASSOC)) { 1222 ret = sta_info_move_state(sta, IEEE80211_STA_AUTH); 1223 if (ret) 1224 return ret; 1225 } 1226 1227 if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED) && 1228 !(set & BIT(NL80211_STA_FLAG_AUTHENTICATED)) && 1229 test_sta_flag(sta, WLAN_STA_AUTH)) { 1230 ret = sta_info_move_state(sta, IEEE80211_STA_NONE); 1231 if (ret) 1232 return ret; 1233 } 1234 1235 return 0; 1236 } 1237 1238 static int sta_apply_parameters(struct ieee80211_local *local, 1239 struct sta_info *sta, 1240 struct station_parameters *params) 1241 { 1242 int ret = 0; 1243 struct ieee80211_supported_band *sband; 1244 struct ieee80211_sub_if_data *sdata = sta->sdata; 1245 enum ieee80211_band band = ieee80211_get_sdata_band(sdata); 1246 u32 mask, set; 1247 1248 sband = local->hw.wiphy->bands[band]; 1249 1250 mask = params->sta_flags_mask; 1251 set = params->sta_flags_set; 1252 1253 if (ieee80211_vif_is_mesh(&sdata->vif)) { 1254 /* 1255 * In mesh mode, ASSOCIATED isn't part of the nl80211 1256 * API but must follow AUTHENTICATED for driver state. 1257 */ 1258 if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED)) 1259 mask |= BIT(NL80211_STA_FLAG_ASSOCIATED); 1260 if (set & BIT(NL80211_STA_FLAG_AUTHENTICATED)) 1261 set |= BIT(NL80211_STA_FLAG_ASSOCIATED); 1262 } else if (test_sta_flag(sta, WLAN_STA_TDLS_PEER)) { 1263 /* 1264 * TDLS -- everything follows authorized, but 1265 * only becoming authorized is possible, not 1266 * going back 1267 */ 1268 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED)) { 1269 set |= BIT(NL80211_STA_FLAG_AUTHENTICATED) | 1270 BIT(NL80211_STA_FLAG_ASSOCIATED); 1271 mask |= BIT(NL80211_STA_FLAG_AUTHENTICATED) | 1272 BIT(NL80211_STA_FLAG_ASSOCIATED); 1273 } 1274 } 1275 1276 ret = sta_apply_auth_flags(local, sta, mask, set); 1277 if (ret) 1278 return ret; 1279 1280 if (mask & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE)) { 1281 if (set & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE)) 1282 set_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE); 1283 else 1284 clear_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE); 1285 } 1286 1287 if (mask & BIT(NL80211_STA_FLAG_WME)) { 1288 if (set & BIT(NL80211_STA_FLAG_WME)) { 1289 set_sta_flag(sta, WLAN_STA_WME); 1290 sta->sta.wme = true; 1291 } else { 1292 clear_sta_flag(sta, WLAN_STA_WME); 1293 sta->sta.wme = false; 1294 } 1295 } 1296 1297 if (mask & BIT(NL80211_STA_FLAG_MFP)) { 1298 if (set & BIT(NL80211_STA_FLAG_MFP)) 1299 set_sta_flag(sta, WLAN_STA_MFP); 1300 else 1301 clear_sta_flag(sta, WLAN_STA_MFP); 1302 } 1303 1304 if (mask & BIT(NL80211_STA_FLAG_TDLS_PEER)) { 1305 if (set & BIT(NL80211_STA_FLAG_TDLS_PEER)) 1306 set_sta_flag(sta, WLAN_STA_TDLS_PEER); 1307 else 1308 clear_sta_flag(sta, WLAN_STA_TDLS_PEER); 1309 } 1310 1311 if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD) { 1312 sta->sta.uapsd_queues = params->uapsd_queues; 1313 sta->sta.max_sp = params->max_sp; 1314 } 1315 1316 /* 1317 * cfg80211 validates this (1-2007) and allows setting the AID 1318 * only when creating a new station entry 1319 */ 1320 if (params->aid) 1321 sta->sta.aid = params->aid; 1322 1323 /* 1324 * Some of the following updates would be racy if called on an 1325 * existing station, via ieee80211_change_station(). However, 1326 * all such changes are rejected by cfg80211 except for updates 1327 * changing the supported rates on an existing but not yet used 1328 * TDLS peer. 1329 */ 1330 1331 if (params->listen_interval >= 0) 1332 sta->listen_interval = params->listen_interval; 1333 1334 if (params->supported_rates) { 1335 ieee80211_parse_bitrates(&sdata->vif.bss_conf.chandef, 1336 sband, params->supported_rates, 1337 params->supported_rates_len, 1338 &sta->sta.supp_rates[band]); 1339 } 1340 1341 if (params->ht_capa) 1342 ieee80211_ht_cap_ie_to_sta_ht_cap(sdata, sband, 1343 params->ht_capa, sta); 1344 1345 if (params->vht_capa) 1346 ieee80211_vht_cap_ie_to_sta_vht_cap(sdata, sband, 1347 params->vht_capa, sta); 1348 1349 if (params->opmode_notif_used) { 1350 /* returned value is only needed for rc update, but the 1351 * rc isn't initialized here yet, so ignore it 1352 */ 1353 __ieee80211_vht_handle_opmode(sdata, sta, 1354 params->opmode_notif, 1355 band, false); 1356 } 1357 1358 if (ieee80211_vif_is_mesh(&sdata->vif)) { 1359 #ifdef CONFIG_MAC80211_MESH 1360 u32 changed = 0; 1361 1362 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE) { 1363 switch (params->plink_state) { 1364 case NL80211_PLINK_ESTAB: 1365 if (sta->plink_state != NL80211_PLINK_ESTAB) 1366 changed = mesh_plink_inc_estab_count( 1367 sdata); 1368 sta->plink_state = params->plink_state; 1369 1370 ieee80211_mps_sta_status_update(sta); 1371 changed |= ieee80211_mps_set_sta_local_pm(sta, 1372 sdata->u.mesh.mshcfg.power_mode); 1373 break; 1374 case NL80211_PLINK_LISTEN: 1375 case NL80211_PLINK_BLOCKED: 1376 case NL80211_PLINK_OPN_SNT: 1377 case NL80211_PLINK_OPN_RCVD: 1378 case NL80211_PLINK_CNF_RCVD: 1379 case NL80211_PLINK_HOLDING: 1380 if (sta->plink_state == NL80211_PLINK_ESTAB) 1381 changed = mesh_plink_dec_estab_count( 1382 sdata); 1383 sta->plink_state = params->plink_state; 1384 1385 ieee80211_mps_sta_status_update(sta); 1386 changed |= ieee80211_mps_set_sta_local_pm(sta, 1387 NL80211_MESH_POWER_UNKNOWN); 1388 break; 1389 default: 1390 /* nothing */ 1391 break; 1392 } 1393 } 1394 1395 switch (params->plink_action) { 1396 case NL80211_PLINK_ACTION_NO_ACTION: 1397 /* nothing */ 1398 break; 1399 case NL80211_PLINK_ACTION_OPEN: 1400 changed |= mesh_plink_open(sta); 1401 break; 1402 case NL80211_PLINK_ACTION_BLOCK: 1403 changed |= mesh_plink_block(sta); 1404 break; 1405 } 1406 1407 if (params->local_pm) 1408 changed |= 1409 ieee80211_mps_set_sta_local_pm(sta, 1410 params->local_pm); 1411 ieee80211_mbss_info_change_notify(sdata, changed); 1412 #endif 1413 } 1414 1415 return 0; 1416 } 1417 1418 static int ieee80211_add_station(struct wiphy *wiphy, struct net_device *dev, 1419 u8 *mac, struct station_parameters *params) 1420 { 1421 struct ieee80211_local *local = wiphy_priv(wiphy); 1422 struct sta_info *sta; 1423 struct ieee80211_sub_if_data *sdata; 1424 int err; 1425 int layer2_update; 1426 1427 if (params->vlan) { 1428 sdata = IEEE80211_DEV_TO_SUB_IF(params->vlan); 1429 1430 if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN && 1431 sdata->vif.type != NL80211_IFTYPE_AP) 1432 return -EINVAL; 1433 } else 1434 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1435 1436 if (ether_addr_equal(mac, sdata->vif.addr)) 1437 return -EINVAL; 1438 1439 if (is_multicast_ether_addr(mac)) 1440 return -EINVAL; 1441 1442 sta = sta_info_alloc(sdata, mac, GFP_KERNEL); 1443 if (!sta) 1444 return -ENOMEM; 1445 1446 /* 1447 * defaults -- if userspace wants something else we'll 1448 * change it accordingly in sta_apply_parameters() 1449 */ 1450 if (!(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))) { 1451 sta_info_pre_move_state(sta, IEEE80211_STA_AUTH); 1452 sta_info_pre_move_state(sta, IEEE80211_STA_ASSOC); 1453 } 1454 1455 err = sta_apply_parameters(local, sta, params); 1456 if (err) { 1457 sta_info_free(local, sta); 1458 return err; 1459 } 1460 1461 /* 1462 * for TDLS, rate control should be initialized only when 1463 * rates are known and station is marked authorized 1464 */ 1465 if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER)) 1466 rate_control_rate_init(sta); 1467 1468 layer2_update = sdata->vif.type == NL80211_IFTYPE_AP_VLAN || 1469 sdata->vif.type == NL80211_IFTYPE_AP; 1470 1471 err = sta_info_insert_rcu(sta); 1472 if (err) { 1473 rcu_read_unlock(); 1474 return err; 1475 } 1476 1477 if (layer2_update) 1478 ieee80211_send_layer2_update(sta); 1479 1480 rcu_read_unlock(); 1481 1482 return 0; 1483 } 1484 1485 static int ieee80211_del_station(struct wiphy *wiphy, struct net_device *dev, 1486 u8 *mac) 1487 { 1488 struct ieee80211_sub_if_data *sdata; 1489 1490 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1491 1492 if (mac) 1493 return sta_info_destroy_addr_bss(sdata, mac); 1494 1495 sta_info_flush(sdata); 1496 return 0; 1497 } 1498 1499 static int ieee80211_change_station(struct wiphy *wiphy, 1500 struct net_device *dev, u8 *mac, 1501 struct station_parameters *params) 1502 { 1503 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1504 struct ieee80211_local *local = wiphy_priv(wiphy); 1505 struct sta_info *sta; 1506 struct ieee80211_sub_if_data *vlansdata; 1507 enum cfg80211_station_type statype; 1508 int err; 1509 1510 mutex_lock(&local->sta_mtx); 1511 1512 sta = sta_info_get_bss(sdata, mac); 1513 if (!sta) { 1514 err = -ENOENT; 1515 goto out_err; 1516 } 1517 1518 switch (sdata->vif.type) { 1519 case NL80211_IFTYPE_MESH_POINT: 1520 if (sdata->u.mesh.user_mpm) 1521 statype = CFG80211_STA_MESH_PEER_USER; 1522 else 1523 statype = CFG80211_STA_MESH_PEER_KERNEL; 1524 break; 1525 case NL80211_IFTYPE_ADHOC: 1526 statype = CFG80211_STA_IBSS; 1527 break; 1528 case NL80211_IFTYPE_STATION: 1529 if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER)) { 1530 statype = CFG80211_STA_AP_STA; 1531 break; 1532 } 1533 if (test_sta_flag(sta, WLAN_STA_AUTHORIZED)) 1534 statype = CFG80211_STA_TDLS_PEER_ACTIVE; 1535 else 1536 statype = CFG80211_STA_TDLS_PEER_SETUP; 1537 break; 1538 case NL80211_IFTYPE_AP: 1539 case NL80211_IFTYPE_AP_VLAN: 1540 statype = CFG80211_STA_AP_CLIENT; 1541 break; 1542 default: 1543 err = -EOPNOTSUPP; 1544 goto out_err; 1545 } 1546 1547 err = cfg80211_check_station_change(wiphy, params, statype); 1548 if (err) 1549 goto out_err; 1550 1551 if (params->vlan && params->vlan != sta->sdata->dev) { 1552 bool prev_4addr = false; 1553 bool new_4addr = false; 1554 1555 vlansdata = IEEE80211_DEV_TO_SUB_IF(params->vlan); 1556 1557 if (params->vlan->ieee80211_ptr->use_4addr) { 1558 if (vlansdata->u.vlan.sta) { 1559 err = -EBUSY; 1560 goto out_err; 1561 } 1562 1563 rcu_assign_pointer(vlansdata->u.vlan.sta, sta); 1564 new_4addr = true; 1565 } 1566 1567 if (sta->sdata->vif.type == NL80211_IFTYPE_AP_VLAN && 1568 sta->sdata->u.vlan.sta) { 1569 rcu_assign_pointer(sta->sdata->u.vlan.sta, NULL); 1570 prev_4addr = true; 1571 } 1572 1573 sta->sdata = vlansdata; 1574 1575 if (sta->sta_state == IEEE80211_STA_AUTHORIZED && 1576 prev_4addr != new_4addr) { 1577 if (new_4addr) 1578 atomic_dec(&sta->sdata->bss->num_mcast_sta); 1579 else 1580 atomic_inc(&sta->sdata->bss->num_mcast_sta); 1581 } 1582 1583 ieee80211_send_layer2_update(sta); 1584 } 1585 1586 err = sta_apply_parameters(local, sta, params); 1587 if (err) 1588 goto out_err; 1589 1590 /* When peer becomes authorized, init rate control as well */ 1591 if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) && 1592 test_sta_flag(sta, WLAN_STA_AUTHORIZED)) 1593 rate_control_rate_init(sta); 1594 1595 mutex_unlock(&local->sta_mtx); 1596 1597 if ((sdata->vif.type == NL80211_IFTYPE_AP || 1598 sdata->vif.type == NL80211_IFTYPE_AP_VLAN) && 1599 sta->known_smps_mode != sta->sdata->bss->req_smps && 1600 test_sta_flag(sta, WLAN_STA_AUTHORIZED) && 1601 sta_info_tx_streams(sta) != 1) { 1602 ht_dbg(sta->sdata, 1603 "%pM just authorized and MIMO capable - update SMPS\n", 1604 sta->sta.addr); 1605 ieee80211_send_smps_action(sta->sdata, 1606 sta->sdata->bss->req_smps, 1607 sta->sta.addr, 1608 sta->sdata->vif.bss_conf.bssid); 1609 } 1610 1611 if (sdata->vif.type == NL80211_IFTYPE_STATION && 1612 params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) { 1613 ieee80211_recalc_ps(local, -1); 1614 ieee80211_recalc_ps_vif(sdata); 1615 } 1616 1617 return 0; 1618 out_err: 1619 mutex_unlock(&local->sta_mtx); 1620 return err; 1621 } 1622 1623 #ifdef CONFIG_MAC80211_MESH 1624 static int ieee80211_add_mpath(struct wiphy *wiphy, struct net_device *dev, 1625 u8 *dst, u8 *next_hop) 1626 { 1627 struct ieee80211_sub_if_data *sdata; 1628 struct mesh_path *mpath; 1629 struct sta_info *sta; 1630 1631 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1632 1633 rcu_read_lock(); 1634 sta = sta_info_get(sdata, next_hop); 1635 if (!sta) { 1636 rcu_read_unlock(); 1637 return -ENOENT; 1638 } 1639 1640 mpath = mesh_path_add(sdata, dst); 1641 if (IS_ERR(mpath)) { 1642 rcu_read_unlock(); 1643 return PTR_ERR(mpath); 1644 } 1645 1646 mesh_path_fix_nexthop(mpath, sta); 1647 1648 rcu_read_unlock(); 1649 return 0; 1650 } 1651 1652 static int ieee80211_del_mpath(struct wiphy *wiphy, struct net_device *dev, 1653 u8 *dst) 1654 { 1655 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1656 1657 if (dst) 1658 return mesh_path_del(sdata, dst); 1659 1660 mesh_path_flush_by_iface(sdata); 1661 return 0; 1662 } 1663 1664 static int ieee80211_change_mpath(struct wiphy *wiphy, 1665 struct net_device *dev, 1666 u8 *dst, u8 *next_hop) 1667 { 1668 struct ieee80211_sub_if_data *sdata; 1669 struct mesh_path *mpath; 1670 struct sta_info *sta; 1671 1672 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1673 1674 rcu_read_lock(); 1675 1676 sta = sta_info_get(sdata, next_hop); 1677 if (!sta) { 1678 rcu_read_unlock(); 1679 return -ENOENT; 1680 } 1681 1682 mpath = mesh_path_lookup(sdata, dst); 1683 if (!mpath) { 1684 rcu_read_unlock(); 1685 return -ENOENT; 1686 } 1687 1688 mesh_path_fix_nexthop(mpath, sta); 1689 1690 rcu_read_unlock(); 1691 return 0; 1692 } 1693 1694 static void mpath_set_pinfo(struct mesh_path *mpath, u8 *next_hop, 1695 struct mpath_info *pinfo) 1696 { 1697 struct sta_info *next_hop_sta = rcu_dereference(mpath->next_hop); 1698 1699 if (next_hop_sta) 1700 memcpy(next_hop, next_hop_sta->sta.addr, ETH_ALEN); 1701 else 1702 memset(next_hop, 0, ETH_ALEN); 1703 1704 memset(pinfo, 0, sizeof(*pinfo)); 1705 1706 pinfo->generation = mesh_paths_generation; 1707 1708 pinfo->filled = MPATH_INFO_FRAME_QLEN | 1709 MPATH_INFO_SN | 1710 MPATH_INFO_METRIC | 1711 MPATH_INFO_EXPTIME | 1712 MPATH_INFO_DISCOVERY_TIMEOUT | 1713 MPATH_INFO_DISCOVERY_RETRIES | 1714 MPATH_INFO_FLAGS; 1715 1716 pinfo->frame_qlen = mpath->frame_queue.qlen; 1717 pinfo->sn = mpath->sn; 1718 pinfo->metric = mpath->metric; 1719 if (time_before(jiffies, mpath->exp_time)) 1720 pinfo->exptime = jiffies_to_msecs(mpath->exp_time - jiffies); 1721 pinfo->discovery_timeout = 1722 jiffies_to_msecs(mpath->discovery_timeout); 1723 pinfo->discovery_retries = mpath->discovery_retries; 1724 if (mpath->flags & MESH_PATH_ACTIVE) 1725 pinfo->flags |= NL80211_MPATH_FLAG_ACTIVE; 1726 if (mpath->flags & MESH_PATH_RESOLVING) 1727 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING; 1728 if (mpath->flags & MESH_PATH_SN_VALID) 1729 pinfo->flags |= NL80211_MPATH_FLAG_SN_VALID; 1730 if (mpath->flags & MESH_PATH_FIXED) 1731 pinfo->flags |= NL80211_MPATH_FLAG_FIXED; 1732 if (mpath->flags & MESH_PATH_RESOLVED) 1733 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVED; 1734 } 1735 1736 static int ieee80211_get_mpath(struct wiphy *wiphy, struct net_device *dev, 1737 u8 *dst, u8 *next_hop, struct mpath_info *pinfo) 1738 1739 { 1740 struct ieee80211_sub_if_data *sdata; 1741 struct mesh_path *mpath; 1742 1743 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1744 1745 rcu_read_lock(); 1746 mpath = mesh_path_lookup(sdata, dst); 1747 if (!mpath) { 1748 rcu_read_unlock(); 1749 return -ENOENT; 1750 } 1751 memcpy(dst, mpath->dst, ETH_ALEN); 1752 mpath_set_pinfo(mpath, next_hop, pinfo); 1753 rcu_read_unlock(); 1754 return 0; 1755 } 1756 1757 static int ieee80211_dump_mpath(struct wiphy *wiphy, struct net_device *dev, 1758 int idx, u8 *dst, u8 *next_hop, 1759 struct mpath_info *pinfo) 1760 { 1761 struct ieee80211_sub_if_data *sdata; 1762 struct mesh_path *mpath; 1763 1764 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1765 1766 rcu_read_lock(); 1767 mpath = mesh_path_lookup_by_idx(sdata, idx); 1768 if (!mpath) { 1769 rcu_read_unlock(); 1770 return -ENOENT; 1771 } 1772 memcpy(dst, mpath->dst, ETH_ALEN); 1773 mpath_set_pinfo(mpath, next_hop, pinfo); 1774 rcu_read_unlock(); 1775 return 0; 1776 } 1777 1778 static int ieee80211_get_mesh_config(struct wiphy *wiphy, 1779 struct net_device *dev, 1780 struct mesh_config *conf) 1781 { 1782 struct ieee80211_sub_if_data *sdata; 1783 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1784 1785 memcpy(conf, &(sdata->u.mesh.mshcfg), sizeof(struct mesh_config)); 1786 return 0; 1787 } 1788 1789 static inline bool _chg_mesh_attr(enum nl80211_meshconf_params parm, u32 mask) 1790 { 1791 return (mask >> (parm-1)) & 0x1; 1792 } 1793 1794 static int copy_mesh_setup(struct ieee80211_if_mesh *ifmsh, 1795 const struct mesh_setup *setup) 1796 { 1797 u8 *new_ie; 1798 const u8 *old_ie; 1799 struct ieee80211_sub_if_data *sdata = container_of(ifmsh, 1800 struct ieee80211_sub_if_data, u.mesh); 1801 1802 /* allocate information elements */ 1803 new_ie = NULL; 1804 old_ie = ifmsh->ie; 1805 1806 if (setup->ie_len) { 1807 new_ie = kmemdup(setup->ie, setup->ie_len, 1808 GFP_KERNEL); 1809 if (!new_ie) 1810 return -ENOMEM; 1811 } 1812 ifmsh->ie_len = setup->ie_len; 1813 ifmsh->ie = new_ie; 1814 kfree(old_ie); 1815 1816 /* now copy the rest of the setup parameters */ 1817 ifmsh->mesh_id_len = setup->mesh_id_len; 1818 memcpy(ifmsh->mesh_id, setup->mesh_id, ifmsh->mesh_id_len); 1819 ifmsh->mesh_sp_id = setup->sync_method; 1820 ifmsh->mesh_pp_id = setup->path_sel_proto; 1821 ifmsh->mesh_pm_id = setup->path_metric; 1822 ifmsh->user_mpm = setup->user_mpm; 1823 ifmsh->mesh_auth_id = setup->auth_id; 1824 ifmsh->security = IEEE80211_MESH_SEC_NONE; 1825 if (setup->is_authenticated) 1826 ifmsh->security |= IEEE80211_MESH_SEC_AUTHED; 1827 if (setup->is_secure) 1828 ifmsh->security |= IEEE80211_MESH_SEC_SECURED; 1829 1830 /* mcast rate setting in Mesh Node */ 1831 memcpy(sdata->vif.bss_conf.mcast_rate, setup->mcast_rate, 1832 sizeof(setup->mcast_rate)); 1833 sdata->vif.bss_conf.basic_rates = setup->basic_rates; 1834 1835 sdata->vif.bss_conf.beacon_int = setup->beacon_interval; 1836 sdata->vif.bss_conf.dtim_period = setup->dtim_period; 1837 1838 return 0; 1839 } 1840 1841 static int ieee80211_update_mesh_config(struct wiphy *wiphy, 1842 struct net_device *dev, u32 mask, 1843 const struct mesh_config *nconf) 1844 { 1845 struct mesh_config *conf; 1846 struct ieee80211_sub_if_data *sdata; 1847 struct ieee80211_if_mesh *ifmsh; 1848 1849 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1850 ifmsh = &sdata->u.mesh; 1851 1852 /* Set the config options which we are interested in setting */ 1853 conf = &(sdata->u.mesh.mshcfg); 1854 if (_chg_mesh_attr(NL80211_MESHCONF_RETRY_TIMEOUT, mask)) 1855 conf->dot11MeshRetryTimeout = nconf->dot11MeshRetryTimeout; 1856 if (_chg_mesh_attr(NL80211_MESHCONF_CONFIRM_TIMEOUT, mask)) 1857 conf->dot11MeshConfirmTimeout = nconf->dot11MeshConfirmTimeout; 1858 if (_chg_mesh_attr(NL80211_MESHCONF_HOLDING_TIMEOUT, mask)) 1859 conf->dot11MeshHoldingTimeout = nconf->dot11MeshHoldingTimeout; 1860 if (_chg_mesh_attr(NL80211_MESHCONF_MAX_PEER_LINKS, mask)) 1861 conf->dot11MeshMaxPeerLinks = nconf->dot11MeshMaxPeerLinks; 1862 if (_chg_mesh_attr(NL80211_MESHCONF_MAX_RETRIES, mask)) 1863 conf->dot11MeshMaxRetries = nconf->dot11MeshMaxRetries; 1864 if (_chg_mesh_attr(NL80211_MESHCONF_TTL, mask)) 1865 conf->dot11MeshTTL = nconf->dot11MeshTTL; 1866 if (_chg_mesh_attr(NL80211_MESHCONF_ELEMENT_TTL, mask)) 1867 conf->element_ttl = nconf->element_ttl; 1868 if (_chg_mesh_attr(NL80211_MESHCONF_AUTO_OPEN_PLINKS, mask)) { 1869 if (ifmsh->user_mpm) 1870 return -EBUSY; 1871 conf->auto_open_plinks = nconf->auto_open_plinks; 1872 } 1873 if (_chg_mesh_attr(NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR, mask)) 1874 conf->dot11MeshNbrOffsetMaxNeighbor = 1875 nconf->dot11MeshNbrOffsetMaxNeighbor; 1876 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES, mask)) 1877 conf->dot11MeshHWMPmaxPREQretries = 1878 nconf->dot11MeshHWMPmaxPREQretries; 1879 if (_chg_mesh_attr(NL80211_MESHCONF_PATH_REFRESH_TIME, mask)) 1880 conf->path_refresh_time = nconf->path_refresh_time; 1881 if (_chg_mesh_attr(NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT, mask)) 1882 conf->min_discovery_timeout = nconf->min_discovery_timeout; 1883 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT, mask)) 1884 conf->dot11MeshHWMPactivePathTimeout = 1885 nconf->dot11MeshHWMPactivePathTimeout; 1886 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL, mask)) 1887 conf->dot11MeshHWMPpreqMinInterval = 1888 nconf->dot11MeshHWMPpreqMinInterval; 1889 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL, mask)) 1890 conf->dot11MeshHWMPperrMinInterval = 1891 nconf->dot11MeshHWMPperrMinInterval; 1892 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME, 1893 mask)) 1894 conf->dot11MeshHWMPnetDiameterTraversalTime = 1895 nconf->dot11MeshHWMPnetDiameterTraversalTime; 1896 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOTMODE, mask)) { 1897 conf->dot11MeshHWMPRootMode = nconf->dot11MeshHWMPRootMode; 1898 ieee80211_mesh_root_setup(ifmsh); 1899 } 1900 if (_chg_mesh_attr(NL80211_MESHCONF_GATE_ANNOUNCEMENTS, mask)) { 1901 /* our current gate announcement implementation rides on root 1902 * announcements, so require this ifmsh to also be a root node 1903 * */ 1904 if (nconf->dot11MeshGateAnnouncementProtocol && 1905 !(conf->dot11MeshHWMPRootMode > IEEE80211_ROOTMODE_ROOT)) { 1906 conf->dot11MeshHWMPRootMode = IEEE80211_PROACTIVE_RANN; 1907 ieee80211_mesh_root_setup(ifmsh); 1908 } 1909 conf->dot11MeshGateAnnouncementProtocol = 1910 nconf->dot11MeshGateAnnouncementProtocol; 1911 } 1912 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_RANN_INTERVAL, mask)) 1913 conf->dot11MeshHWMPRannInterval = 1914 nconf->dot11MeshHWMPRannInterval; 1915 if (_chg_mesh_attr(NL80211_MESHCONF_FORWARDING, mask)) 1916 conf->dot11MeshForwarding = nconf->dot11MeshForwarding; 1917 if (_chg_mesh_attr(NL80211_MESHCONF_RSSI_THRESHOLD, mask)) { 1918 /* our RSSI threshold implementation is supported only for 1919 * devices that report signal in dBm. 1920 */ 1921 if (!(sdata->local->hw.flags & IEEE80211_HW_SIGNAL_DBM)) 1922 return -ENOTSUPP; 1923 conf->rssi_threshold = nconf->rssi_threshold; 1924 } 1925 if (_chg_mesh_attr(NL80211_MESHCONF_HT_OPMODE, mask)) { 1926 conf->ht_opmode = nconf->ht_opmode; 1927 sdata->vif.bss_conf.ht_operation_mode = nconf->ht_opmode; 1928 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_HT); 1929 } 1930 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT, mask)) 1931 conf->dot11MeshHWMPactivePathToRootTimeout = 1932 nconf->dot11MeshHWMPactivePathToRootTimeout; 1933 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOT_INTERVAL, mask)) 1934 conf->dot11MeshHWMProotInterval = 1935 nconf->dot11MeshHWMProotInterval; 1936 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL, mask)) 1937 conf->dot11MeshHWMPconfirmationInterval = 1938 nconf->dot11MeshHWMPconfirmationInterval; 1939 if (_chg_mesh_attr(NL80211_MESHCONF_POWER_MODE, mask)) { 1940 conf->power_mode = nconf->power_mode; 1941 ieee80211_mps_local_status_update(sdata); 1942 } 1943 if (_chg_mesh_attr(NL80211_MESHCONF_AWAKE_WINDOW, mask)) 1944 conf->dot11MeshAwakeWindowDuration = 1945 nconf->dot11MeshAwakeWindowDuration; 1946 if (_chg_mesh_attr(NL80211_MESHCONF_PLINK_TIMEOUT, mask)) 1947 conf->plink_timeout = nconf->plink_timeout; 1948 ieee80211_mbss_info_change_notify(sdata, BSS_CHANGED_BEACON); 1949 return 0; 1950 } 1951 1952 static int ieee80211_join_mesh(struct wiphy *wiphy, struct net_device *dev, 1953 const struct mesh_config *conf, 1954 const struct mesh_setup *setup) 1955 { 1956 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1957 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh; 1958 int err; 1959 1960 memcpy(&ifmsh->mshcfg, conf, sizeof(struct mesh_config)); 1961 err = copy_mesh_setup(ifmsh, setup); 1962 if (err) 1963 return err; 1964 1965 /* can mesh use other SMPS modes? */ 1966 sdata->smps_mode = IEEE80211_SMPS_OFF; 1967 sdata->needed_rx_chains = sdata->local->rx_chains; 1968 1969 mutex_lock(&sdata->local->mtx); 1970 err = ieee80211_vif_use_channel(sdata, &setup->chandef, 1971 IEEE80211_CHANCTX_SHARED); 1972 mutex_unlock(&sdata->local->mtx); 1973 if (err) 1974 return err; 1975 1976 return ieee80211_start_mesh(sdata); 1977 } 1978 1979 static int ieee80211_leave_mesh(struct wiphy *wiphy, struct net_device *dev) 1980 { 1981 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1982 1983 ieee80211_stop_mesh(sdata); 1984 mutex_lock(&sdata->local->mtx); 1985 ieee80211_vif_release_channel(sdata); 1986 mutex_unlock(&sdata->local->mtx); 1987 1988 return 0; 1989 } 1990 #endif 1991 1992 static int ieee80211_change_bss(struct wiphy *wiphy, 1993 struct net_device *dev, 1994 struct bss_parameters *params) 1995 { 1996 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1997 enum ieee80211_band band; 1998 u32 changed = 0; 1999 2000 if (!sdata_dereference(sdata->u.ap.beacon, sdata)) 2001 return -ENOENT; 2002 2003 band = ieee80211_get_sdata_band(sdata); 2004 2005 if (params->use_cts_prot >= 0) { 2006 sdata->vif.bss_conf.use_cts_prot = params->use_cts_prot; 2007 changed |= BSS_CHANGED_ERP_CTS_PROT; 2008 } 2009 if (params->use_short_preamble >= 0) { 2010 sdata->vif.bss_conf.use_short_preamble = 2011 params->use_short_preamble; 2012 changed |= BSS_CHANGED_ERP_PREAMBLE; 2013 } 2014 2015 if (!sdata->vif.bss_conf.use_short_slot && 2016 band == IEEE80211_BAND_5GHZ) { 2017 sdata->vif.bss_conf.use_short_slot = true; 2018 changed |= BSS_CHANGED_ERP_SLOT; 2019 } 2020 2021 if (params->use_short_slot_time >= 0) { 2022 sdata->vif.bss_conf.use_short_slot = 2023 params->use_short_slot_time; 2024 changed |= BSS_CHANGED_ERP_SLOT; 2025 } 2026 2027 if (params->basic_rates) { 2028 ieee80211_parse_bitrates(&sdata->vif.bss_conf.chandef, 2029 wiphy->bands[band], 2030 params->basic_rates, 2031 params->basic_rates_len, 2032 &sdata->vif.bss_conf.basic_rates); 2033 changed |= BSS_CHANGED_BASIC_RATES; 2034 } 2035 2036 if (params->ap_isolate >= 0) { 2037 if (params->ap_isolate) 2038 sdata->flags |= IEEE80211_SDATA_DONT_BRIDGE_PACKETS; 2039 else 2040 sdata->flags &= ~IEEE80211_SDATA_DONT_BRIDGE_PACKETS; 2041 } 2042 2043 if (params->ht_opmode >= 0) { 2044 sdata->vif.bss_conf.ht_operation_mode = 2045 (u16) params->ht_opmode; 2046 changed |= BSS_CHANGED_HT; 2047 } 2048 2049 if (params->p2p_ctwindow >= 0) { 2050 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow &= 2051 ~IEEE80211_P2P_OPPPS_CTWINDOW_MASK; 2052 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |= 2053 params->p2p_ctwindow & IEEE80211_P2P_OPPPS_CTWINDOW_MASK; 2054 changed |= BSS_CHANGED_P2P_PS; 2055 } 2056 2057 if (params->p2p_opp_ps > 0) { 2058 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |= 2059 IEEE80211_P2P_OPPPS_ENABLE_BIT; 2060 changed |= BSS_CHANGED_P2P_PS; 2061 } else if (params->p2p_opp_ps == 0) { 2062 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow &= 2063 ~IEEE80211_P2P_OPPPS_ENABLE_BIT; 2064 changed |= BSS_CHANGED_P2P_PS; 2065 } 2066 2067 ieee80211_bss_info_change_notify(sdata, changed); 2068 2069 return 0; 2070 } 2071 2072 static int ieee80211_set_txq_params(struct wiphy *wiphy, 2073 struct net_device *dev, 2074 struct ieee80211_txq_params *params) 2075 { 2076 struct ieee80211_local *local = wiphy_priv(wiphy); 2077 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2078 struct ieee80211_tx_queue_params p; 2079 2080 if (!local->ops->conf_tx) 2081 return -EOPNOTSUPP; 2082 2083 if (local->hw.queues < IEEE80211_NUM_ACS) 2084 return -EOPNOTSUPP; 2085 2086 memset(&p, 0, sizeof(p)); 2087 p.aifs = params->aifs; 2088 p.cw_max = params->cwmax; 2089 p.cw_min = params->cwmin; 2090 p.txop = params->txop; 2091 2092 /* 2093 * Setting tx queue params disables u-apsd because it's only 2094 * called in master mode. 2095 */ 2096 p.uapsd = false; 2097 2098 sdata->tx_conf[params->ac] = p; 2099 if (drv_conf_tx(local, sdata, params->ac, &p)) { 2100 wiphy_debug(local->hw.wiphy, 2101 "failed to set TX queue parameters for AC %d\n", 2102 params->ac); 2103 return -EINVAL; 2104 } 2105 2106 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_QOS); 2107 2108 return 0; 2109 } 2110 2111 #ifdef CONFIG_PM 2112 static int ieee80211_suspend(struct wiphy *wiphy, 2113 struct cfg80211_wowlan *wowlan) 2114 { 2115 return __ieee80211_suspend(wiphy_priv(wiphy), wowlan); 2116 } 2117 2118 static int ieee80211_resume(struct wiphy *wiphy) 2119 { 2120 return __ieee80211_resume(wiphy_priv(wiphy)); 2121 } 2122 #else 2123 #define ieee80211_suspend NULL 2124 #define ieee80211_resume NULL 2125 #endif 2126 2127 static int ieee80211_scan(struct wiphy *wiphy, 2128 struct cfg80211_scan_request *req) 2129 { 2130 struct ieee80211_sub_if_data *sdata; 2131 2132 sdata = IEEE80211_WDEV_TO_SUB_IF(req->wdev); 2133 2134 switch (ieee80211_vif_type_p2p(&sdata->vif)) { 2135 case NL80211_IFTYPE_STATION: 2136 case NL80211_IFTYPE_ADHOC: 2137 case NL80211_IFTYPE_MESH_POINT: 2138 case NL80211_IFTYPE_P2P_CLIENT: 2139 case NL80211_IFTYPE_P2P_DEVICE: 2140 break; 2141 case NL80211_IFTYPE_P2P_GO: 2142 if (sdata->local->ops->hw_scan) 2143 break; 2144 /* 2145 * FIXME: implement NoA while scanning in software, 2146 * for now fall through to allow scanning only when 2147 * beaconing hasn't been configured yet 2148 */ 2149 case NL80211_IFTYPE_AP: 2150 /* 2151 * If the scan has been forced (and the driver supports 2152 * forcing), don't care about being beaconing already. 2153 * This will create problems to the attached stations (e.g. all 2154 * the frames sent while scanning on other channel will be 2155 * lost) 2156 */ 2157 if (sdata->u.ap.beacon && 2158 (!(wiphy->features & NL80211_FEATURE_AP_SCAN) || 2159 !(req->flags & NL80211_SCAN_FLAG_AP))) 2160 return -EOPNOTSUPP; 2161 break; 2162 default: 2163 return -EOPNOTSUPP; 2164 } 2165 2166 return ieee80211_request_scan(sdata, req); 2167 } 2168 2169 static int 2170 ieee80211_sched_scan_start(struct wiphy *wiphy, 2171 struct net_device *dev, 2172 struct cfg80211_sched_scan_request *req) 2173 { 2174 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2175 2176 if (!sdata->local->ops->sched_scan_start) 2177 return -EOPNOTSUPP; 2178 2179 return ieee80211_request_sched_scan_start(sdata, req); 2180 } 2181 2182 static int 2183 ieee80211_sched_scan_stop(struct wiphy *wiphy, struct net_device *dev) 2184 { 2185 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2186 2187 if (!sdata->local->ops->sched_scan_stop) 2188 return -EOPNOTSUPP; 2189 2190 return ieee80211_request_sched_scan_stop(sdata); 2191 } 2192 2193 static int ieee80211_auth(struct wiphy *wiphy, struct net_device *dev, 2194 struct cfg80211_auth_request *req) 2195 { 2196 return ieee80211_mgd_auth(IEEE80211_DEV_TO_SUB_IF(dev), req); 2197 } 2198 2199 static int ieee80211_assoc(struct wiphy *wiphy, struct net_device *dev, 2200 struct cfg80211_assoc_request *req) 2201 { 2202 return ieee80211_mgd_assoc(IEEE80211_DEV_TO_SUB_IF(dev), req); 2203 } 2204 2205 static int ieee80211_deauth(struct wiphy *wiphy, struct net_device *dev, 2206 struct cfg80211_deauth_request *req) 2207 { 2208 return ieee80211_mgd_deauth(IEEE80211_DEV_TO_SUB_IF(dev), req); 2209 } 2210 2211 static int ieee80211_disassoc(struct wiphy *wiphy, struct net_device *dev, 2212 struct cfg80211_disassoc_request *req) 2213 { 2214 return ieee80211_mgd_disassoc(IEEE80211_DEV_TO_SUB_IF(dev), req); 2215 } 2216 2217 static int ieee80211_join_ibss(struct wiphy *wiphy, struct net_device *dev, 2218 struct cfg80211_ibss_params *params) 2219 { 2220 return ieee80211_ibss_join(IEEE80211_DEV_TO_SUB_IF(dev), params); 2221 } 2222 2223 static int ieee80211_leave_ibss(struct wiphy *wiphy, struct net_device *dev) 2224 { 2225 return ieee80211_ibss_leave(IEEE80211_DEV_TO_SUB_IF(dev)); 2226 } 2227 2228 static int ieee80211_set_mcast_rate(struct wiphy *wiphy, struct net_device *dev, 2229 int rate[IEEE80211_NUM_BANDS]) 2230 { 2231 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2232 2233 memcpy(sdata->vif.bss_conf.mcast_rate, rate, 2234 sizeof(int) * IEEE80211_NUM_BANDS); 2235 2236 return 0; 2237 } 2238 2239 static int ieee80211_set_wiphy_params(struct wiphy *wiphy, u32 changed) 2240 { 2241 struct ieee80211_local *local = wiphy_priv(wiphy); 2242 int err; 2243 2244 if (changed & WIPHY_PARAM_FRAG_THRESHOLD) { 2245 err = drv_set_frag_threshold(local, wiphy->frag_threshold); 2246 2247 if (err) 2248 return err; 2249 } 2250 2251 if (changed & WIPHY_PARAM_COVERAGE_CLASS) { 2252 err = drv_set_coverage_class(local, wiphy->coverage_class); 2253 2254 if (err) 2255 return err; 2256 } 2257 2258 if (changed & WIPHY_PARAM_RTS_THRESHOLD) { 2259 err = drv_set_rts_threshold(local, wiphy->rts_threshold); 2260 2261 if (err) 2262 return err; 2263 } 2264 2265 if (changed & WIPHY_PARAM_RETRY_SHORT) { 2266 if (wiphy->retry_short > IEEE80211_MAX_TX_RETRY) 2267 return -EINVAL; 2268 local->hw.conf.short_frame_max_tx_count = wiphy->retry_short; 2269 } 2270 if (changed & WIPHY_PARAM_RETRY_LONG) { 2271 if (wiphy->retry_long > IEEE80211_MAX_TX_RETRY) 2272 return -EINVAL; 2273 local->hw.conf.long_frame_max_tx_count = wiphy->retry_long; 2274 } 2275 if (changed & 2276 (WIPHY_PARAM_RETRY_SHORT | WIPHY_PARAM_RETRY_LONG)) 2277 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_RETRY_LIMITS); 2278 2279 return 0; 2280 } 2281 2282 static int ieee80211_set_tx_power(struct wiphy *wiphy, 2283 struct wireless_dev *wdev, 2284 enum nl80211_tx_power_setting type, int mbm) 2285 { 2286 struct ieee80211_local *local = wiphy_priv(wiphy); 2287 struct ieee80211_sub_if_data *sdata; 2288 2289 if (wdev) { 2290 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 2291 2292 switch (type) { 2293 case NL80211_TX_POWER_AUTOMATIC: 2294 sdata->user_power_level = IEEE80211_UNSET_POWER_LEVEL; 2295 break; 2296 case NL80211_TX_POWER_LIMITED: 2297 case NL80211_TX_POWER_FIXED: 2298 if (mbm < 0 || (mbm % 100)) 2299 return -EOPNOTSUPP; 2300 sdata->user_power_level = MBM_TO_DBM(mbm); 2301 break; 2302 } 2303 2304 ieee80211_recalc_txpower(sdata); 2305 2306 return 0; 2307 } 2308 2309 switch (type) { 2310 case NL80211_TX_POWER_AUTOMATIC: 2311 local->user_power_level = IEEE80211_UNSET_POWER_LEVEL; 2312 break; 2313 case NL80211_TX_POWER_LIMITED: 2314 case NL80211_TX_POWER_FIXED: 2315 if (mbm < 0 || (mbm % 100)) 2316 return -EOPNOTSUPP; 2317 local->user_power_level = MBM_TO_DBM(mbm); 2318 break; 2319 } 2320 2321 mutex_lock(&local->iflist_mtx); 2322 list_for_each_entry(sdata, &local->interfaces, list) 2323 sdata->user_power_level = local->user_power_level; 2324 list_for_each_entry(sdata, &local->interfaces, list) 2325 ieee80211_recalc_txpower(sdata); 2326 mutex_unlock(&local->iflist_mtx); 2327 2328 return 0; 2329 } 2330 2331 static int ieee80211_get_tx_power(struct wiphy *wiphy, 2332 struct wireless_dev *wdev, 2333 int *dbm) 2334 { 2335 struct ieee80211_local *local = wiphy_priv(wiphy); 2336 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 2337 2338 if (!local->use_chanctx) 2339 *dbm = local->hw.conf.power_level; 2340 else 2341 *dbm = sdata->vif.bss_conf.txpower; 2342 2343 return 0; 2344 } 2345 2346 static int ieee80211_set_wds_peer(struct wiphy *wiphy, struct net_device *dev, 2347 const u8 *addr) 2348 { 2349 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2350 2351 memcpy(&sdata->u.wds.remote_addr, addr, ETH_ALEN); 2352 2353 return 0; 2354 } 2355 2356 static void ieee80211_rfkill_poll(struct wiphy *wiphy) 2357 { 2358 struct ieee80211_local *local = wiphy_priv(wiphy); 2359 2360 drv_rfkill_poll(local); 2361 } 2362 2363 #ifdef CONFIG_NL80211_TESTMODE 2364 static int ieee80211_testmode_cmd(struct wiphy *wiphy, 2365 struct wireless_dev *wdev, 2366 void *data, int len) 2367 { 2368 struct ieee80211_local *local = wiphy_priv(wiphy); 2369 struct ieee80211_vif *vif = NULL; 2370 2371 if (!local->ops->testmode_cmd) 2372 return -EOPNOTSUPP; 2373 2374 if (wdev) { 2375 struct ieee80211_sub_if_data *sdata; 2376 2377 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 2378 if (sdata->flags & IEEE80211_SDATA_IN_DRIVER) 2379 vif = &sdata->vif; 2380 } 2381 2382 return local->ops->testmode_cmd(&local->hw, vif, data, len); 2383 } 2384 2385 static int ieee80211_testmode_dump(struct wiphy *wiphy, 2386 struct sk_buff *skb, 2387 struct netlink_callback *cb, 2388 void *data, int len) 2389 { 2390 struct ieee80211_local *local = wiphy_priv(wiphy); 2391 2392 if (!local->ops->testmode_dump) 2393 return -EOPNOTSUPP; 2394 2395 return local->ops->testmode_dump(&local->hw, skb, cb, data, len); 2396 } 2397 #endif 2398 2399 int __ieee80211_request_smps_ap(struct ieee80211_sub_if_data *sdata, 2400 enum ieee80211_smps_mode smps_mode) 2401 { 2402 struct sta_info *sta; 2403 enum ieee80211_smps_mode old_req; 2404 int i; 2405 2406 if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_AP)) 2407 return -EINVAL; 2408 2409 if (sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_20_NOHT) 2410 return 0; 2411 2412 old_req = sdata->u.ap.req_smps; 2413 sdata->u.ap.req_smps = smps_mode; 2414 2415 /* AUTOMATIC doesn't mean much for AP - don't allow it */ 2416 if (old_req == smps_mode || 2417 smps_mode == IEEE80211_SMPS_AUTOMATIC) 2418 return 0; 2419 2420 /* If no associated stations, there's no need to do anything */ 2421 if (!atomic_read(&sdata->u.ap.num_mcast_sta)) { 2422 sdata->smps_mode = smps_mode; 2423 ieee80211_queue_work(&sdata->local->hw, &sdata->recalc_smps); 2424 return 0; 2425 } 2426 2427 ht_dbg(sdata, 2428 "SMSP %d requested in AP mode, sending Action frame to %d stations\n", 2429 smps_mode, atomic_read(&sdata->u.ap.num_mcast_sta)); 2430 2431 mutex_lock(&sdata->local->sta_mtx); 2432 for (i = 0; i < STA_HASH_SIZE; i++) { 2433 for (sta = rcu_dereference_protected(sdata->local->sta_hash[i], 2434 lockdep_is_held(&sdata->local->sta_mtx)); 2435 sta; 2436 sta = rcu_dereference_protected(sta->hnext, 2437 lockdep_is_held(&sdata->local->sta_mtx))) { 2438 /* 2439 * Only stations associated to our AP and 2440 * associated VLANs 2441 */ 2442 if (sta->sdata->bss != &sdata->u.ap) 2443 continue; 2444 2445 /* This station doesn't support MIMO - skip it */ 2446 if (sta_info_tx_streams(sta) == 1) 2447 continue; 2448 2449 /* 2450 * Don't wake up a STA just to send the action frame 2451 * unless we are getting more restrictive. 2452 */ 2453 if (test_sta_flag(sta, WLAN_STA_PS_STA) && 2454 !ieee80211_smps_is_restrictive(sta->known_smps_mode, 2455 smps_mode)) { 2456 ht_dbg(sdata, 2457 "Won't send SMPS to sleeping STA %pM\n", 2458 sta->sta.addr); 2459 continue; 2460 } 2461 2462 /* 2463 * If the STA is not authorized, wait until it gets 2464 * authorized and the action frame will be sent then. 2465 */ 2466 if (!test_sta_flag(sta, WLAN_STA_AUTHORIZED)) 2467 continue; 2468 2469 ht_dbg(sdata, "Sending SMPS to %pM\n", sta->sta.addr); 2470 ieee80211_send_smps_action(sdata, smps_mode, 2471 sta->sta.addr, 2472 sdata->vif.bss_conf.bssid); 2473 } 2474 } 2475 mutex_unlock(&sdata->local->sta_mtx); 2476 2477 sdata->smps_mode = smps_mode; 2478 ieee80211_queue_work(&sdata->local->hw, &sdata->recalc_smps); 2479 2480 return 0; 2481 } 2482 2483 int __ieee80211_request_smps_mgd(struct ieee80211_sub_if_data *sdata, 2484 enum ieee80211_smps_mode smps_mode) 2485 { 2486 const u8 *ap; 2487 enum ieee80211_smps_mode old_req; 2488 int err; 2489 2490 lockdep_assert_held(&sdata->wdev.mtx); 2491 2492 if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_STATION)) 2493 return -EINVAL; 2494 2495 old_req = sdata->u.mgd.req_smps; 2496 sdata->u.mgd.req_smps = smps_mode; 2497 2498 if (old_req == smps_mode && 2499 smps_mode != IEEE80211_SMPS_AUTOMATIC) 2500 return 0; 2501 2502 /* 2503 * If not associated, or current association is not an HT 2504 * association, there's no need to do anything, just store 2505 * the new value until we associate. 2506 */ 2507 if (!sdata->u.mgd.associated || 2508 sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_20_NOHT) 2509 return 0; 2510 2511 ap = sdata->u.mgd.associated->bssid; 2512 2513 if (smps_mode == IEEE80211_SMPS_AUTOMATIC) { 2514 if (sdata->u.mgd.powersave) 2515 smps_mode = IEEE80211_SMPS_DYNAMIC; 2516 else 2517 smps_mode = IEEE80211_SMPS_OFF; 2518 } 2519 2520 /* send SM PS frame to AP */ 2521 err = ieee80211_send_smps_action(sdata, smps_mode, 2522 ap, ap); 2523 if (err) 2524 sdata->u.mgd.req_smps = old_req; 2525 2526 return err; 2527 } 2528 2529 static int ieee80211_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev, 2530 bool enabled, int timeout) 2531 { 2532 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2533 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); 2534 2535 if (sdata->vif.type != NL80211_IFTYPE_STATION) 2536 return -EOPNOTSUPP; 2537 2538 if (!(local->hw.flags & IEEE80211_HW_SUPPORTS_PS)) 2539 return -EOPNOTSUPP; 2540 2541 if (enabled == sdata->u.mgd.powersave && 2542 timeout == local->dynamic_ps_forced_timeout) 2543 return 0; 2544 2545 sdata->u.mgd.powersave = enabled; 2546 local->dynamic_ps_forced_timeout = timeout; 2547 2548 /* no change, but if automatic follow powersave */ 2549 sdata_lock(sdata); 2550 __ieee80211_request_smps_mgd(sdata, sdata->u.mgd.req_smps); 2551 sdata_unlock(sdata); 2552 2553 if (local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_PS) 2554 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS); 2555 2556 ieee80211_recalc_ps(local, -1); 2557 ieee80211_recalc_ps_vif(sdata); 2558 2559 return 0; 2560 } 2561 2562 static int ieee80211_set_cqm_rssi_config(struct wiphy *wiphy, 2563 struct net_device *dev, 2564 s32 rssi_thold, u32 rssi_hyst) 2565 { 2566 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2567 struct ieee80211_vif *vif = &sdata->vif; 2568 struct ieee80211_bss_conf *bss_conf = &vif->bss_conf; 2569 2570 if (rssi_thold == bss_conf->cqm_rssi_thold && 2571 rssi_hyst == bss_conf->cqm_rssi_hyst) 2572 return 0; 2573 2574 bss_conf->cqm_rssi_thold = rssi_thold; 2575 bss_conf->cqm_rssi_hyst = rssi_hyst; 2576 2577 /* tell the driver upon association, unless already associated */ 2578 if (sdata->u.mgd.associated && 2579 sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI) 2580 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_CQM); 2581 2582 return 0; 2583 } 2584 2585 static int ieee80211_set_bitrate_mask(struct wiphy *wiphy, 2586 struct net_device *dev, 2587 const u8 *addr, 2588 const struct cfg80211_bitrate_mask *mask) 2589 { 2590 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2591 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); 2592 int i, ret; 2593 2594 if (!ieee80211_sdata_running(sdata)) 2595 return -ENETDOWN; 2596 2597 if (local->hw.flags & IEEE80211_HW_HAS_RATE_CONTROL) { 2598 ret = drv_set_bitrate_mask(local, sdata, mask); 2599 if (ret) 2600 return ret; 2601 } 2602 2603 for (i = 0; i < IEEE80211_NUM_BANDS; i++) { 2604 struct ieee80211_supported_band *sband = wiphy->bands[i]; 2605 int j; 2606 2607 sdata->rc_rateidx_mask[i] = mask->control[i].legacy; 2608 memcpy(sdata->rc_rateidx_mcs_mask[i], mask->control[i].ht_mcs, 2609 sizeof(mask->control[i].ht_mcs)); 2610 2611 sdata->rc_has_mcs_mask[i] = false; 2612 if (!sband) 2613 continue; 2614 2615 for (j = 0; j < IEEE80211_HT_MCS_MASK_LEN; j++) 2616 if (~sdata->rc_rateidx_mcs_mask[i][j]) { 2617 sdata->rc_has_mcs_mask[i] = true; 2618 break; 2619 } 2620 } 2621 2622 return 0; 2623 } 2624 2625 static int ieee80211_start_roc_work(struct ieee80211_local *local, 2626 struct ieee80211_sub_if_data *sdata, 2627 struct ieee80211_channel *channel, 2628 unsigned int duration, u64 *cookie, 2629 struct sk_buff *txskb, 2630 enum ieee80211_roc_type type) 2631 { 2632 struct ieee80211_roc_work *roc, *tmp; 2633 bool queued = false; 2634 int ret; 2635 2636 lockdep_assert_held(&local->mtx); 2637 2638 if (local->use_chanctx && !local->ops->remain_on_channel) 2639 return -EOPNOTSUPP; 2640 2641 roc = kzalloc(sizeof(*roc), GFP_KERNEL); 2642 if (!roc) 2643 return -ENOMEM; 2644 2645 /* 2646 * If the duration is zero, then the driver 2647 * wouldn't actually do anything. Set it to 2648 * 10 for now. 2649 * 2650 * TODO: cancel the off-channel operation 2651 * when we get the SKB's TX status and 2652 * the wait time was zero before. 2653 */ 2654 if (!duration) 2655 duration = 10; 2656 2657 roc->chan = channel; 2658 roc->duration = duration; 2659 roc->req_duration = duration; 2660 roc->frame = txskb; 2661 roc->type = type; 2662 roc->mgmt_tx_cookie = (unsigned long)txskb; 2663 roc->sdata = sdata; 2664 INIT_DELAYED_WORK(&roc->work, ieee80211_sw_roc_work); 2665 INIT_LIST_HEAD(&roc->dependents); 2666 2667 /* 2668 * cookie is either the roc cookie (for normal roc) 2669 * or the SKB (for mgmt TX) 2670 */ 2671 if (!txskb) { 2672 /* local->mtx protects this */ 2673 local->roc_cookie_counter++; 2674 roc->cookie = local->roc_cookie_counter; 2675 /* wow, you wrapped 64 bits ... more likely a bug */ 2676 if (WARN_ON(roc->cookie == 0)) { 2677 roc->cookie = 1; 2678 local->roc_cookie_counter++; 2679 } 2680 *cookie = roc->cookie; 2681 } else { 2682 *cookie = (unsigned long)txskb; 2683 } 2684 2685 /* if there's one pending or we're scanning, queue this one */ 2686 if (!list_empty(&local->roc_list) || 2687 local->scanning || local->radar_detect_enabled) 2688 goto out_check_combine; 2689 2690 /* if not HW assist, just queue & schedule work */ 2691 if (!local->ops->remain_on_channel) { 2692 ieee80211_queue_delayed_work(&local->hw, &roc->work, 0); 2693 goto out_queue; 2694 } 2695 2696 /* otherwise actually kick it off here (for error handling) */ 2697 2698 ret = drv_remain_on_channel(local, sdata, channel, duration, type); 2699 if (ret) { 2700 kfree(roc); 2701 return ret; 2702 } 2703 2704 roc->started = true; 2705 goto out_queue; 2706 2707 out_check_combine: 2708 list_for_each_entry(tmp, &local->roc_list, list) { 2709 if (tmp->chan != channel || tmp->sdata != sdata) 2710 continue; 2711 2712 /* 2713 * Extend this ROC if possible: 2714 * 2715 * If it hasn't started yet, just increase the duration 2716 * and add the new one to the list of dependents. 2717 * If the type of the new ROC has higher priority, modify the 2718 * type of the previous one to match that of the new one. 2719 */ 2720 if (!tmp->started) { 2721 list_add_tail(&roc->list, &tmp->dependents); 2722 tmp->duration = max(tmp->duration, roc->duration); 2723 tmp->type = max(tmp->type, roc->type); 2724 queued = true; 2725 break; 2726 } 2727 2728 /* If it has already started, it's more difficult ... */ 2729 if (local->ops->remain_on_channel) { 2730 unsigned long j = jiffies; 2731 2732 /* 2733 * In the offloaded ROC case, if it hasn't begun, add 2734 * this new one to the dependent list to be handled 2735 * when the master one begins. If it has begun, 2736 * check that there's still a minimum time left and 2737 * if so, start this one, transmitting the frame, but 2738 * add it to the list directly after this one with 2739 * a reduced time so we'll ask the driver to execute 2740 * it right after finishing the previous one, in the 2741 * hope that it'll also be executed right afterwards, 2742 * effectively extending the old one. 2743 * If there's no minimum time left, just add it to the 2744 * normal list. 2745 * TODO: the ROC type is ignored here, assuming that it 2746 * is better to immediately use the current ROC. 2747 */ 2748 if (!tmp->hw_begun) { 2749 list_add_tail(&roc->list, &tmp->dependents); 2750 queued = true; 2751 break; 2752 } 2753 2754 if (time_before(j + IEEE80211_ROC_MIN_LEFT, 2755 tmp->hw_start_time + 2756 msecs_to_jiffies(tmp->duration))) { 2757 int new_dur; 2758 2759 ieee80211_handle_roc_started(roc); 2760 2761 new_dur = roc->duration - 2762 jiffies_to_msecs(tmp->hw_start_time + 2763 msecs_to_jiffies( 2764 tmp->duration) - 2765 j); 2766 2767 if (new_dur > 0) { 2768 /* add right after tmp */ 2769 list_add(&roc->list, &tmp->list); 2770 } else { 2771 list_add_tail(&roc->list, 2772 &tmp->dependents); 2773 } 2774 queued = true; 2775 } 2776 } else if (del_timer_sync(&tmp->work.timer)) { 2777 unsigned long new_end; 2778 2779 /* 2780 * In the software ROC case, cancel the timer, if 2781 * that fails then the finish work is already 2782 * queued/pending and thus we queue the new ROC 2783 * normally, if that succeeds then we can extend 2784 * the timer duration and TX the frame (if any.) 2785 */ 2786 2787 list_add_tail(&roc->list, &tmp->dependents); 2788 queued = true; 2789 2790 new_end = jiffies + msecs_to_jiffies(roc->duration); 2791 2792 /* ok, it was started & we canceled timer */ 2793 if (time_after(new_end, tmp->work.timer.expires)) 2794 mod_timer(&tmp->work.timer, new_end); 2795 else 2796 add_timer(&tmp->work.timer); 2797 2798 ieee80211_handle_roc_started(roc); 2799 } 2800 break; 2801 } 2802 2803 out_queue: 2804 if (!queued) 2805 list_add_tail(&roc->list, &local->roc_list); 2806 2807 return 0; 2808 } 2809 2810 static int ieee80211_remain_on_channel(struct wiphy *wiphy, 2811 struct wireless_dev *wdev, 2812 struct ieee80211_channel *chan, 2813 unsigned int duration, 2814 u64 *cookie) 2815 { 2816 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 2817 struct ieee80211_local *local = sdata->local; 2818 int ret; 2819 2820 mutex_lock(&local->mtx); 2821 ret = ieee80211_start_roc_work(local, sdata, chan, 2822 duration, cookie, NULL, 2823 IEEE80211_ROC_TYPE_NORMAL); 2824 mutex_unlock(&local->mtx); 2825 2826 return ret; 2827 } 2828 2829 static int ieee80211_cancel_roc(struct ieee80211_local *local, 2830 u64 cookie, bool mgmt_tx) 2831 { 2832 struct ieee80211_roc_work *roc, *tmp, *found = NULL; 2833 int ret; 2834 2835 mutex_lock(&local->mtx); 2836 list_for_each_entry_safe(roc, tmp, &local->roc_list, list) { 2837 struct ieee80211_roc_work *dep, *tmp2; 2838 2839 list_for_each_entry_safe(dep, tmp2, &roc->dependents, list) { 2840 if (!mgmt_tx && dep->cookie != cookie) 2841 continue; 2842 else if (mgmt_tx && dep->mgmt_tx_cookie != cookie) 2843 continue; 2844 /* found dependent item -- just remove it */ 2845 list_del(&dep->list); 2846 mutex_unlock(&local->mtx); 2847 2848 ieee80211_roc_notify_destroy(dep, true); 2849 return 0; 2850 } 2851 2852 if (!mgmt_tx && roc->cookie != cookie) 2853 continue; 2854 else if (mgmt_tx && roc->mgmt_tx_cookie != cookie) 2855 continue; 2856 2857 found = roc; 2858 break; 2859 } 2860 2861 if (!found) { 2862 mutex_unlock(&local->mtx); 2863 return -ENOENT; 2864 } 2865 2866 /* 2867 * We found the item to cancel, so do that. Note that it 2868 * may have dependents, which we also cancel (and send 2869 * the expired signal for.) Not doing so would be quite 2870 * tricky here, but we may need to fix it later. 2871 */ 2872 2873 if (local->ops->remain_on_channel) { 2874 if (found->started) { 2875 ret = drv_cancel_remain_on_channel(local); 2876 if (WARN_ON_ONCE(ret)) { 2877 mutex_unlock(&local->mtx); 2878 return ret; 2879 } 2880 } 2881 2882 list_del(&found->list); 2883 2884 if (found->started) 2885 ieee80211_start_next_roc(local); 2886 mutex_unlock(&local->mtx); 2887 2888 ieee80211_roc_notify_destroy(found, true); 2889 } else { 2890 /* work may be pending so use it all the time */ 2891 found->abort = true; 2892 ieee80211_queue_delayed_work(&local->hw, &found->work, 0); 2893 2894 mutex_unlock(&local->mtx); 2895 2896 /* work will clean up etc */ 2897 flush_delayed_work(&found->work); 2898 WARN_ON(!found->to_be_freed); 2899 kfree(found); 2900 } 2901 2902 return 0; 2903 } 2904 2905 static int ieee80211_cancel_remain_on_channel(struct wiphy *wiphy, 2906 struct wireless_dev *wdev, 2907 u64 cookie) 2908 { 2909 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 2910 struct ieee80211_local *local = sdata->local; 2911 2912 return ieee80211_cancel_roc(local, cookie, false); 2913 } 2914 2915 static int ieee80211_start_radar_detection(struct wiphy *wiphy, 2916 struct net_device *dev, 2917 struct cfg80211_chan_def *chandef, 2918 u32 cac_time_ms) 2919 { 2920 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2921 struct ieee80211_local *local = sdata->local; 2922 int err; 2923 2924 mutex_lock(&local->mtx); 2925 if (!list_empty(&local->roc_list) || local->scanning) { 2926 err = -EBUSY; 2927 goto out_unlock; 2928 } 2929 2930 /* whatever, but channel contexts should not complain about that one */ 2931 sdata->smps_mode = IEEE80211_SMPS_OFF; 2932 sdata->needed_rx_chains = local->rx_chains; 2933 sdata->radar_required = true; 2934 2935 err = ieee80211_vif_use_channel(sdata, chandef, 2936 IEEE80211_CHANCTX_SHARED); 2937 if (err) 2938 goto out_unlock; 2939 2940 ieee80211_queue_delayed_work(&sdata->local->hw, 2941 &sdata->dfs_cac_timer_work, 2942 msecs_to_jiffies(cac_time_ms)); 2943 2944 out_unlock: 2945 mutex_unlock(&local->mtx); 2946 return err; 2947 } 2948 2949 static struct cfg80211_beacon_data * 2950 cfg80211_beacon_dup(struct cfg80211_beacon_data *beacon) 2951 { 2952 struct cfg80211_beacon_data *new_beacon; 2953 u8 *pos; 2954 int len; 2955 2956 len = beacon->head_len + beacon->tail_len + beacon->beacon_ies_len + 2957 beacon->proberesp_ies_len + beacon->assocresp_ies_len + 2958 beacon->probe_resp_len; 2959 2960 new_beacon = kzalloc(sizeof(*new_beacon) + len, GFP_KERNEL); 2961 if (!new_beacon) 2962 return NULL; 2963 2964 pos = (u8 *)(new_beacon + 1); 2965 if (beacon->head_len) { 2966 new_beacon->head_len = beacon->head_len; 2967 new_beacon->head = pos; 2968 memcpy(pos, beacon->head, beacon->head_len); 2969 pos += beacon->head_len; 2970 } 2971 if (beacon->tail_len) { 2972 new_beacon->tail_len = beacon->tail_len; 2973 new_beacon->tail = pos; 2974 memcpy(pos, beacon->tail, beacon->tail_len); 2975 pos += beacon->tail_len; 2976 } 2977 if (beacon->beacon_ies_len) { 2978 new_beacon->beacon_ies_len = beacon->beacon_ies_len; 2979 new_beacon->beacon_ies = pos; 2980 memcpy(pos, beacon->beacon_ies, beacon->beacon_ies_len); 2981 pos += beacon->beacon_ies_len; 2982 } 2983 if (beacon->proberesp_ies_len) { 2984 new_beacon->proberesp_ies_len = beacon->proberesp_ies_len; 2985 new_beacon->proberesp_ies = pos; 2986 memcpy(pos, beacon->proberesp_ies, beacon->proberesp_ies_len); 2987 pos += beacon->proberesp_ies_len; 2988 } 2989 if (beacon->assocresp_ies_len) { 2990 new_beacon->assocresp_ies_len = beacon->assocresp_ies_len; 2991 new_beacon->assocresp_ies = pos; 2992 memcpy(pos, beacon->assocresp_ies, beacon->assocresp_ies_len); 2993 pos += beacon->assocresp_ies_len; 2994 } 2995 if (beacon->probe_resp_len) { 2996 new_beacon->probe_resp_len = beacon->probe_resp_len; 2997 beacon->probe_resp = pos; 2998 memcpy(pos, beacon->probe_resp, beacon->probe_resp_len); 2999 pos += beacon->probe_resp_len; 3000 } 3001 3002 return new_beacon; 3003 } 3004 3005 void ieee80211_csa_finish(struct ieee80211_vif *vif) 3006 { 3007 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); 3008 3009 ieee80211_queue_work(&sdata->local->hw, 3010 &sdata->csa_finalize_work); 3011 } 3012 EXPORT_SYMBOL(ieee80211_csa_finish); 3013 3014 static void ieee80211_csa_finalize(struct ieee80211_sub_if_data *sdata) 3015 { 3016 struct ieee80211_local *local = sdata->local; 3017 int err, changed = 0; 3018 3019 sdata_assert_lock(sdata); 3020 3021 mutex_lock(&local->mtx); 3022 sdata->radar_required = sdata->csa_radar_required; 3023 err = ieee80211_vif_change_channel(sdata, &changed); 3024 mutex_unlock(&local->mtx); 3025 if (WARN_ON(err < 0)) 3026 return; 3027 3028 if (!local->use_chanctx) { 3029 local->_oper_chandef = sdata->csa_chandef; 3030 ieee80211_hw_config(local, 0); 3031 } 3032 3033 sdata->vif.csa_active = false; 3034 switch (sdata->vif.type) { 3035 case NL80211_IFTYPE_AP: 3036 err = ieee80211_assign_beacon(sdata, sdata->u.ap.next_beacon); 3037 kfree(sdata->u.ap.next_beacon); 3038 sdata->u.ap.next_beacon = NULL; 3039 3040 if (err < 0) 3041 return; 3042 changed |= err; 3043 break; 3044 case NL80211_IFTYPE_ADHOC: 3045 err = ieee80211_ibss_finish_csa(sdata); 3046 if (err < 0) 3047 return; 3048 changed |= err; 3049 break; 3050 #ifdef CONFIG_MAC80211_MESH 3051 case NL80211_IFTYPE_MESH_POINT: 3052 err = ieee80211_mesh_finish_csa(sdata); 3053 if (err < 0) 3054 return; 3055 changed |= err; 3056 break; 3057 #endif 3058 default: 3059 WARN_ON(1); 3060 return; 3061 } 3062 3063 ieee80211_bss_info_change_notify(sdata, changed); 3064 3065 ieee80211_wake_queues_by_reason(&sdata->local->hw, 3066 IEEE80211_MAX_QUEUE_MAP, 3067 IEEE80211_QUEUE_STOP_REASON_CSA); 3068 3069 cfg80211_ch_switch_notify(sdata->dev, &sdata->csa_chandef); 3070 } 3071 3072 void ieee80211_csa_finalize_work(struct work_struct *work) 3073 { 3074 struct ieee80211_sub_if_data *sdata = 3075 container_of(work, struct ieee80211_sub_if_data, 3076 csa_finalize_work); 3077 3078 sdata_lock(sdata); 3079 /* AP might have been stopped while waiting for the lock. */ 3080 if (!sdata->vif.csa_active) 3081 goto unlock; 3082 3083 if (!ieee80211_sdata_running(sdata)) 3084 goto unlock; 3085 3086 ieee80211_csa_finalize(sdata); 3087 3088 unlock: 3089 sdata_unlock(sdata); 3090 } 3091 3092 static int ieee80211_set_csa_beacon(struct ieee80211_sub_if_data *sdata, 3093 struct cfg80211_csa_settings *params, 3094 u32 *changed) 3095 { 3096 int err; 3097 3098 switch (sdata->vif.type) { 3099 case NL80211_IFTYPE_AP: 3100 sdata->u.ap.next_beacon = 3101 cfg80211_beacon_dup(¶ms->beacon_after); 3102 if (!sdata->u.ap.next_beacon) 3103 return -ENOMEM; 3104 3105 /* 3106 * With a count of 0, we don't have to wait for any 3107 * TBTT before switching, so complete the CSA 3108 * immediately. In theory, with a count == 1 we 3109 * should delay the switch until just before the next 3110 * TBTT, but that would complicate things so we switch 3111 * immediately too. If we would delay the switch 3112 * until the next TBTT, we would have to set the probe 3113 * response here. 3114 * 3115 * TODO: A channel switch with count <= 1 without 3116 * sending a CSA action frame is kind of useless, 3117 * because the clients won't know we're changing 3118 * channels. The action frame must be implemented 3119 * either here or in the userspace. 3120 */ 3121 if (params->count <= 1) 3122 break; 3123 3124 sdata->csa_counter_offset_beacon = 3125 params->counter_offset_beacon; 3126 sdata->csa_counter_offset_presp = params->counter_offset_presp; 3127 err = ieee80211_assign_beacon(sdata, ¶ms->beacon_csa); 3128 if (err < 0) { 3129 kfree(sdata->u.ap.next_beacon); 3130 return err; 3131 } 3132 *changed |= err; 3133 3134 break; 3135 case NL80211_IFTYPE_ADHOC: 3136 if (!sdata->vif.bss_conf.ibss_joined) 3137 return -EINVAL; 3138 3139 if (params->chandef.width != sdata->u.ibss.chandef.width) 3140 return -EINVAL; 3141 3142 switch (params->chandef.width) { 3143 case NL80211_CHAN_WIDTH_40: 3144 if (cfg80211_get_chandef_type(¶ms->chandef) != 3145 cfg80211_get_chandef_type(&sdata->u.ibss.chandef)) 3146 return -EINVAL; 3147 case NL80211_CHAN_WIDTH_5: 3148 case NL80211_CHAN_WIDTH_10: 3149 case NL80211_CHAN_WIDTH_20_NOHT: 3150 case NL80211_CHAN_WIDTH_20: 3151 break; 3152 default: 3153 return -EINVAL; 3154 } 3155 3156 /* changes into another band are not supported */ 3157 if (sdata->u.ibss.chandef.chan->band != 3158 params->chandef.chan->band) 3159 return -EINVAL; 3160 3161 /* see comments in the NL80211_IFTYPE_AP block */ 3162 if (params->count > 1) { 3163 err = ieee80211_ibss_csa_beacon(sdata, params); 3164 if (err < 0) 3165 return err; 3166 *changed |= err; 3167 } 3168 3169 ieee80211_send_action_csa(sdata, params); 3170 3171 break; 3172 #ifdef CONFIG_MAC80211_MESH 3173 case NL80211_IFTYPE_MESH_POINT: { 3174 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh; 3175 3176 if (params->chandef.width != sdata->vif.bss_conf.chandef.width) 3177 return -EINVAL; 3178 3179 /* changes into another band are not supported */ 3180 if (sdata->vif.bss_conf.chandef.chan->band != 3181 params->chandef.chan->band) 3182 return -EINVAL; 3183 3184 if (ifmsh->csa_role == IEEE80211_MESH_CSA_ROLE_NONE) { 3185 ifmsh->csa_role = IEEE80211_MESH_CSA_ROLE_INIT; 3186 if (!ifmsh->pre_value) 3187 ifmsh->pre_value = 1; 3188 else 3189 ifmsh->pre_value++; 3190 } 3191 3192 /* see comments in the NL80211_IFTYPE_AP block */ 3193 if (params->count > 1) { 3194 err = ieee80211_mesh_csa_beacon(sdata, params); 3195 if (err < 0) { 3196 ifmsh->csa_role = IEEE80211_MESH_CSA_ROLE_NONE; 3197 return err; 3198 } 3199 *changed |= err; 3200 } 3201 3202 if (ifmsh->csa_role == IEEE80211_MESH_CSA_ROLE_INIT) 3203 ieee80211_send_action_csa(sdata, params); 3204 3205 break; 3206 } 3207 #endif 3208 default: 3209 return -EOPNOTSUPP; 3210 } 3211 3212 return 0; 3213 } 3214 3215 int ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev, 3216 struct cfg80211_csa_settings *params) 3217 { 3218 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 3219 struct ieee80211_local *local = sdata->local; 3220 struct ieee80211_chanctx_conf *chanctx_conf; 3221 struct ieee80211_chanctx *chanctx; 3222 int err, num_chanctx, changed = 0; 3223 3224 sdata_assert_lock(sdata); 3225 3226 if (!list_empty(&local->roc_list) || local->scanning) 3227 return -EBUSY; 3228 3229 if (sdata->wdev.cac_started) 3230 return -EBUSY; 3231 3232 if (cfg80211_chandef_identical(¶ms->chandef, 3233 &sdata->vif.bss_conf.chandef)) 3234 return -EINVAL; 3235 3236 rcu_read_lock(); 3237 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); 3238 if (!chanctx_conf) { 3239 rcu_read_unlock(); 3240 return -EBUSY; 3241 } 3242 3243 /* don't handle for multi-VIF cases */ 3244 chanctx = container_of(chanctx_conf, struct ieee80211_chanctx, conf); 3245 if (chanctx->refcount > 1) { 3246 rcu_read_unlock(); 3247 return -EBUSY; 3248 } 3249 num_chanctx = 0; 3250 list_for_each_entry_rcu(chanctx, &local->chanctx_list, list) 3251 num_chanctx++; 3252 rcu_read_unlock(); 3253 3254 if (num_chanctx > 1) 3255 return -EBUSY; 3256 3257 /* don't allow another channel switch if one is already active. */ 3258 if (sdata->vif.csa_active) 3259 return -EBUSY; 3260 3261 err = ieee80211_set_csa_beacon(sdata, params, &changed); 3262 if (err) 3263 return err; 3264 3265 sdata->csa_radar_required = params->radar_required; 3266 3267 if (params->block_tx) 3268 ieee80211_stop_queues_by_reason(&local->hw, 3269 IEEE80211_MAX_QUEUE_MAP, 3270 IEEE80211_QUEUE_STOP_REASON_CSA); 3271 3272 sdata->csa_chandef = params->chandef; 3273 sdata->vif.csa_active = true; 3274 3275 if (changed) { 3276 ieee80211_bss_info_change_notify(sdata, changed); 3277 drv_channel_switch_beacon(sdata, ¶ms->chandef); 3278 } else { 3279 /* if the beacon didn't change, we can finalize immediately */ 3280 ieee80211_csa_finalize(sdata); 3281 } 3282 3283 return 0; 3284 } 3285 3286 static int ieee80211_mgmt_tx(struct wiphy *wiphy, struct wireless_dev *wdev, 3287 struct cfg80211_mgmt_tx_params *params, 3288 u64 *cookie) 3289 { 3290 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 3291 struct ieee80211_local *local = sdata->local; 3292 struct sk_buff *skb; 3293 struct sta_info *sta; 3294 const struct ieee80211_mgmt *mgmt = (void *)params->buf; 3295 bool need_offchan = false; 3296 u32 flags; 3297 int ret; 3298 3299 if (params->dont_wait_for_ack) 3300 flags = IEEE80211_TX_CTL_NO_ACK; 3301 else 3302 flags = IEEE80211_TX_INTFL_NL80211_FRAME_TX | 3303 IEEE80211_TX_CTL_REQ_TX_STATUS; 3304 3305 if (params->no_cck) 3306 flags |= IEEE80211_TX_CTL_NO_CCK_RATE; 3307 3308 switch (sdata->vif.type) { 3309 case NL80211_IFTYPE_ADHOC: 3310 if (!sdata->vif.bss_conf.ibss_joined) 3311 need_offchan = true; 3312 /* fall through */ 3313 #ifdef CONFIG_MAC80211_MESH 3314 case NL80211_IFTYPE_MESH_POINT: 3315 if (ieee80211_vif_is_mesh(&sdata->vif) && 3316 !sdata->u.mesh.mesh_id_len) 3317 need_offchan = true; 3318 /* fall through */ 3319 #endif 3320 case NL80211_IFTYPE_AP: 3321 case NL80211_IFTYPE_AP_VLAN: 3322 case NL80211_IFTYPE_P2P_GO: 3323 if (sdata->vif.type != NL80211_IFTYPE_ADHOC && 3324 !ieee80211_vif_is_mesh(&sdata->vif) && 3325 !rcu_access_pointer(sdata->bss->beacon)) 3326 need_offchan = true; 3327 if (!ieee80211_is_action(mgmt->frame_control) || 3328 mgmt->u.action.category == WLAN_CATEGORY_PUBLIC || 3329 mgmt->u.action.category == WLAN_CATEGORY_SELF_PROTECTED || 3330 mgmt->u.action.category == WLAN_CATEGORY_SPECTRUM_MGMT) 3331 break; 3332 rcu_read_lock(); 3333 sta = sta_info_get(sdata, mgmt->da); 3334 rcu_read_unlock(); 3335 if (!sta) 3336 return -ENOLINK; 3337 break; 3338 case NL80211_IFTYPE_STATION: 3339 case NL80211_IFTYPE_P2P_CLIENT: 3340 if (!sdata->u.mgd.associated) 3341 need_offchan = true; 3342 break; 3343 case NL80211_IFTYPE_P2P_DEVICE: 3344 need_offchan = true; 3345 break; 3346 default: 3347 return -EOPNOTSUPP; 3348 } 3349 3350 /* configurations requiring offchan cannot work if no channel has been 3351 * specified 3352 */ 3353 if (need_offchan && !params->chan) 3354 return -EINVAL; 3355 3356 mutex_lock(&local->mtx); 3357 3358 /* Check if the operating channel is the requested channel */ 3359 if (!need_offchan) { 3360 struct ieee80211_chanctx_conf *chanctx_conf; 3361 3362 rcu_read_lock(); 3363 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); 3364 3365 if (chanctx_conf) { 3366 need_offchan = params->chan && 3367 (params->chan != 3368 chanctx_conf->def.chan); 3369 } else if (!params->chan) { 3370 ret = -EINVAL; 3371 rcu_read_unlock(); 3372 goto out_unlock; 3373 } else { 3374 need_offchan = true; 3375 } 3376 rcu_read_unlock(); 3377 } 3378 3379 if (need_offchan && !params->offchan) { 3380 ret = -EBUSY; 3381 goto out_unlock; 3382 } 3383 3384 skb = dev_alloc_skb(local->hw.extra_tx_headroom + params->len); 3385 if (!skb) { 3386 ret = -ENOMEM; 3387 goto out_unlock; 3388 } 3389 skb_reserve(skb, local->hw.extra_tx_headroom); 3390 3391 memcpy(skb_put(skb, params->len), params->buf, params->len); 3392 3393 IEEE80211_SKB_CB(skb)->flags = flags; 3394 3395 skb->dev = sdata->dev; 3396 3397 if (!need_offchan) { 3398 *cookie = (unsigned long) skb; 3399 ieee80211_tx_skb(sdata, skb); 3400 ret = 0; 3401 goto out_unlock; 3402 } 3403 3404 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_TX_OFFCHAN | 3405 IEEE80211_TX_INTFL_OFFCHAN_TX_OK; 3406 if (local->hw.flags & IEEE80211_HW_QUEUE_CONTROL) 3407 IEEE80211_SKB_CB(skb)->hw_queue = 3408 local->hw.offchannel_tx_hw_queue; 3409 3410 /* This will handle all kinds of coalescing and immediate TX */ 3411 ret = ieee80211_start_roc_work(local, sdata, params->chan, 3412 params->wait, cookie, skb, 3413 IEEE80211_ROC_TYPE_MGMT_TX); 3414 if (ret) 3415 kfree_skb(skb); 3416 out_unlock: 3417 mutex_unlock(&local->mtx); 3418 return ret; 3419 } 3420 3421 static int ieee80211_mgmt_tx_cancel_wait(struct wiphy *wiphy, 3422 struct wireless_dev *wdev, 3423 u64 cookie) 3424 { 3425 struct ieee80211_local *local = wiphy_priv(wiphy); 3426 3427 return ieee80211_cancel_roc(local, cookie, true); 3428 } 3429 3430 static void ieee80211_mgmt_frame_register(struct wiphy *wiphy, 3431 struct wireless_dev *wdev, 3432 u16 frame_type, bool reg) 3433 { 3434 struct ieee80211_local *local = wiphy_priv(wiphy); 3435 3436 switch (frame_type) { 3437 case IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_PROBE_REQ: 3438 if (reg) 3439 local->probe_req_reg++; 3440 else 3441 local->probe_req_reg--; 3442 3443 if (!local->open_count) 3444 break; 3445 3446 ieee80211_queue_work(&local->hw, &local->reconfig_filter); 3447 break; 3448 default: 3449 break; 3450 } 3451 } 3452 3453 static int ieee80211_set_antenna(struct wiphy *wiphy, u32 tx_ant, u32 rx_ant) 3454 { 3455 struct ieee80211_local *local = wiphy_priv(wiphy); 3456 3457 if (local->started) 3458 return -EOPNOTSUPP; 3459 3460 return drv_set_antenna(local, tx_ant, rx_ant); 3461 } 3462 3463 static int ieee80211_get_antenna(struct wiphy *wiphy, u32 *tx_ant, u32 *rx_ant) 3464 { 3465 struct ieee80211_local *local = wiphy_priv(wiphy); 3466 3467 return drv_get_antenna(local, tx_ant, rx_ant); 3468 } 3469 3470 static int ieee80211_set_ringparam(struct wiphy *wiphy, u32 tx, u32 rx) 3471 { 3472 struct ieee80211_local *local = wiphy_priv(wiphy); 3473 3474 return drv_set_ringparam(local, tx, rx); 3475 } 3476 3477 static void ieee80211_get_ringparam(struct wiphy *wiphy, 3478 u32 *tx, u32 *tx_max, u32 *rx, u32 *rx_max) 3479 { 3480 struct ieee80211_local *local = wiphy_priv(wiphy); 3481 3482 drv_get_ringparam(local, tx, tx_max, rx, rx_max); 3483 } 3484 3485 static int ieee80211_set_rekey_data(struct wiphy *wiphy, 3486 struct net_device *dev, 3487 struct cfg80211_gtk_rekey_data *data) 3488 { 3489 struct ieee80211_local *local = wiphy_priv(wiphy); 3490 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 3491 3492 if (!local->ops->set_rekey_data) 3493 return -EOPNOTSUPP; 3494 3495 drv_set_rekey_data(local, sdata, data); 3496 3497 return 0; 3498 } 3499 3500 static void ieee80211_tdls_add_ext_capab(struct sk_buff *skb) 3501 { 3502 u8 *pos = (void *)skb_put(skb, 7); 3503 3504 *pos++ = WLAN_EID_EXT_CAPABILITY; 3505 *pos++ = 5; /* len */ 3506 *pos++ = 0x0; 3507 *pos++ = 0x0; 3508 *pos++ = 0x0; 3509 *pos++ = 0x0; 3510 *pos++ = WLAN_EXT_CAPA5_TDLS_ENABLED; 3511 } 3512 3513 static u16 ieee80211_get_tdls_sta_capab(struct ieee80211_sub_if_data *sdata) 3514 { 3515 struct ieee80211_local *local = sdata->local; 3516 u16 capab; 3517 3518 capab = 0; 3519 if (ieee80211_get_sdata_band(sdata) != IEEE80211_BAND_2GHZ) 3520 return capab; 3521 3522 if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_SLOT_INCAPABLE)) 3523 capab |= WLAN_CAPABILITY_SHORT_SLOT_TIME; 3524 if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_PREAMBLE_INCAPABLE)) 3525 capab |= WLAN_CAPABILITY_SHORT_PREAMBLE; 3526 3527 return capab; 3528 } 3529 3530 static void ieee80211_tdls_add_link_ie(struct sk_buff *skb, u8 *src_addr, 3531 u8 *peer, u8 *bssid) 3532 { 3533 struct ieee80211_tdls_lnkie *lnkid; 3534 3535 lnkid = (void *)skb_put(skb, sizeof(struct ieee80211_tdls_lnkie)); 3536 3537 lnkid->ie_type = WLAN_EID_LINK_ID; 3538 lnkid->ie_len = sizeof(struct ieee80211_tdls_lnkie) - 2; 3539 3540 memcpy(lnkid->bssid, bssid, ETH_ALEN); 3541 memcpy(lnkid->init_sta, src_addr, ETH_ALEN); 3542 memcpy(lnkid->resp_sta, peer, ETH_ALEN); 3543 } 3544 3545 static int 3546 ieee80211_prep_tdls_encap_data(struct wiphy *wiphy, struct net_device *dev, 3547 u8 *peer, u8 action_code, u8 dialog_token, 3548 u16 status_code, struct sk_buff *skb) 3549 { 3550 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 3551 enum ieee80211_band band = ieee80211_get_sdata_band(sdata); 3552 struct ieee80211_tdls_data *tf; 3553 3554 tf = (void *)skb_put(skb, offsetof(struct ieee80211_tdls_data, u)); 3555 3556 memcpy(tf->da, peer, ETH_ALEN); 3557 memcpy(tf->sa, sdata->vif.addr, ETH_ALEN); 3558 tf->ether_type = cpu_to_be16(ETH_P_TDLS); 3559 tf->payload_type = WLAN_TDLS_SNAP_RFTYPE; 3560 3561 switch (action_code) { 3562 case WLAN_TDLS_SETUP_REQUEST: 3563 tf->category = WLAN_CATEGORY_TDLS; 3564 tf->action_code = WLAN_TDLS_SETUP_REQUEST; 3565 3566 skb_put(skb, sizeof(tf->u.setup_req)); 3567 tf->u.setup_req.dialog_token = dialog_token; 3568 tf->u.setup_req.capability = 3569 cpu_to_le16(ieee80211_get_tdls_sta_capab(sdata)); 3570 3571 ieee80211_add_srates_ie(sdata, skb, false, band); 3572 ieee80211_add_ext_srates_ie(sdata, skb, false, band); 3573 ieee80211_tdls_add_ext_capab(skb); 3574 break; 3575 case WLAN_TDLS_SETUP_RESPONSE: 3576 tf->category = WLAN_CATEGORY_TDLS; 3577 tf->action_code = WLAN_TDLS_SETUP_RESPONSE; 3578 3579 skb_put(skb, sizeof(tf->u.setup_resp)); 3580 tf->u.setup_resp.status_code = cpu_to_le16(status_code); 3581 tf->u.setup_resp.dialog_token = dialog_token; 3582 tf->u.setup_resp.capability = 3583 cpu_to_le16(ieee80211_get_tdls_sta_capab(sdata)); 3584 3585 ieee80211_add_srates_ie(sdata, skb, false, band); 3586 ieee80211_add_ext_srates_ie(sdata, skb, false, band); 3587 ieee80211_tdls_add_ext_capab(skb); 3588 break; 3589 case WLAN_TDLS_SETUP_CONFIRM: 3590 tf->category = WLAN_CATEGORY_TDLS; 3591 tf->action_code = WLAN_TDLS_SETUP_CONFIRM; 3592 3593 skb_put(skb, sizeof(tf->u.setup_cfm)); 3594 tf->u.setup_cfm.status_code = cpu_to_le16(status_code); 3595 tf->u.setup_cfm.dialog_token = dialog_token; 3596 break; 3597 case WLAN_TDLS_TEARDOWN: 3598 tf->category = WLAN_CATEGORY_TDLS; 3599 tf->action_code = WLAN_TDLS_TEARDOWN; 3600 3601 skb_put(skb, sizeof(tf->u.teardown)); 3602 tf->u.teardown.reason_code = cpu_to_le16(status_code); 3603 break; 3604 case WLAN_TDLS_DISCOVERY_REQUEST: 3605 tf->category = WLAN_CATEGORY_TDLS; 3606 tf->action_code = WLAN_TDLS_DISCOVERY_REQUEST; 3607 3608 skb_put(skb, sizeof(tf->u.discover_req)); 3609 tf->u.discover_req.dialog_token = dialog_token; 3610 break; 3611 default: 3612 return -EINVAL; 3613 } 3614 3615 return 0; 3616 } 3617 3618 static int 3619 ieee80211_prep_tdls_direct(struct wiphy *wiphy, struct net_device *dev, 3620 u8 *peer, u8 action_code, u8 dialog_token, 3621 u16 status_code, struct sk_buff *skb) 3622 { 3623 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 3624 enum ieee80211_band band = ieee80211_get_sdata_band(sdata); 3625 struct ieee80211_mgmt *mgmt; 3626 3627 mgmt = (void *)skb_put(skb, 24); 3628 memset(mgmt, 0, 24); 3629 memcpy(mgmt->da, peer, ETH_ALEN); 3630 memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN); 3631 memcpy(mgmt->bssid, sdata->u.mgd.bssid, ETH_ALEN); 3632 3633 mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | 3634 IEEE80211_STYPE_ACTION); 3635 3636 switch (action_code) { 3637 case WLAN_PUB_ACTION_TDLS_DISCOVER_RES: 3638 skb_put(skb, 1 + sizeof(mgmt->u.action.u.tdls_discover_resp)); 3639 mgmt->u.action.category = WLAN_CATEGORY_PUBLIC; 3640 mgmt->u.action.u.tdls_discover_resp.action_code = 3641 WLAN_PUB_ACTION_TDLS_DISCOVER_RES; 3642 mgmt->u.action.u.tdls_discover_resp.dialog_token = 3643 dialog_token; 3644 mgmt->u.action.u.tdls_discover_resp.capability = 3645 cpu_to_le16(ieee80211_get_tdls_sta_capab(sdata)); 3646 3647 ieee80211_add_srates_ie(sdata, skb, false, band); 3648 ieee80211_add_ext_srates_ie(sdata, skb, false, band); 3649 ieee80211_tdls_add_ext_capab(skb); 3650 break; 3651 default: 3652 return -EINVAL; 3653 } 3654 3655 return 0; 3656 } 3657 3658 static int ieee80211_tdls_mgmt(struct wiphy *wiphy, struct net_device *dev, 3659 u8 *peer, u8 action_code, u8 dialog_token, 3660 u16 status_code, u32 peer_capability, 3661 const u8 *extra_ies, size_t extra_ies_len) 3662 { 3663 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 3664 struct ieee80211_local *local = sdata->local; 3665 struct sk_buff *skb = NULL; 3666 bool send_direct; 3667 int ret; 3668 3669 if (!(wiphy->flags & WIPHY_FLAG_SUPPORTS_TDLS)) 3670 return -ENOTSUPP; 3671 3672 /* make sure we are in managed mode, and associated */ 3673 if (sdata->vif.type != NL80211_IFTYPE_STATION || 3674 !sdata->u.mgd.associated) 3675 return -EINVAL; 3676 3677 tdls_dbg(sdata, "TDLS mgmt action %d peer %pM\n", 3678 action_code, peer); 3679 3680 skb = dev_alloc_skb(local->hw.extra_tx_headroom + 3681 max(sizeof(struct ieee80211_mgmt), 3682 sizeof(struct ieee80211_tdls_data)) + 3683 50 + /* supported rates */ 3684 7 + /* ext capab */ 3685 extra_ies_len + 3686 sizeof(struct ieee80211_tdls_lnkie)); 3687 if (!skb) 3688 return -ENOMEM; 3689 3690 skb_reserve(skb, local->hw.extra_tx_headroom); 3691 3692 switch (action_code) { 3693 case WLAN_TDLS_SETUP_REQUEST: 3694 case WLAN_TDLS_SETUP_RESPONSE: 3695 case WLAN_TDLS_SETUP_CONFIRM: 3696 case WLAN_TDLS_TEARDOWN: 3697 case WLAN_TDLS_DISCOVERY_REQUEST: 3698 ret = ieee80211_prep_tdls_encap_data(wiphy, dev, peer, 3699 action_code, dialog_token, 3700 status_code, skb); 3701 send_direct = false; 3702 break; 3703 case WLAN_PUB_ACTION_TDLS_DISCOVER_RES: 3704 ret = ieee80211_prep_tdls_direct(wiphy, dev, peer, action_code, 3705 dialog_token, status_code, 3706 skb); 3707 send_direct = true; 3708 break; 3709 default: 3710 ret = -ENOTSUPP; 3711 break; 3712 } 3713 3714 if (ret < 0) 3715 goto fail; 3716 3717 if (extra_ies_len) 3718 memcpy(skb_put(skb, extra_ies_len), extra_ies, extra_ies_len); 3719 3720 /* the TDLS link IE is always added last */ 3721 switch (action_code) { 3722 case WLAN_TDLS_SETUP_REQUEST: 3723 case WLAN_TDLS_SETUP_CONFIRM: 3724 case WLAN_TDLS_TEARDOWN: 3725 case WLAN_TDLS_DISCOVERY_REQUEST: 3726 /* we are the initiator */ 3727 ieee80211_tdls_add_link_ie(skb, sdata->vif.addr, peer, 3728 sdata->u.mgd.bssid); 3729 break; 3730 case WLAN_TDLS_SETUP_RESPONSE: 3731 case WLAN_PUB_ACTION_TDLS_DISCOVER_RES: 3732 /* we are the responder */ 3733 ieee80211_tdls_add_link_ie(skb, peer, sdata->vif.addr, 3734 sdata->u.mgd.bssid); 3735 break; 3736 default: 3737 ret = -ENOTSUPP; 3738 goto fail; 3739 } 3740 3741 if (send_direct) { 3742 ieee80211_tx_skb(sdata, skb); 3743 return 0; 3744 } 3745 3746 /* 3747 * According to 802.11z: Setup req/resp are sent in AC_BK, otherwise 3748 * we should default to AC_VI. 3749 */ 3750 switch (action_code) { 3751 case WLAN_TDLS_SETUP_REQUEST: 3752 case WLAN_TDLS_SETUP_RESPONSE: 3753 skb_set_queue_mapping(skb, IEEE80211_AC_BK); 3754 skb->priority = 2; 3755 break; 3756 default: 3757 skb_set_queue_mapping(skb, IEEE80211_AC_VI); 3758 skb->priority = 5; 3759 break; 3760 } 3761 3762 /* disable bottom halves when entering the Tx path */ 3763 local_bh_disable(); 3764 ret = ieee80211_subif_start_xmit(skb, dev); 3765 local_bh_enable(); 3766 3767 return ret; 3768 3769 fail: 3770 dev_kfree_skb(skb); 3771 return ret; 3772 } 3773 3774 static int ieee80211_tdls_oper(struct wiphy *wiphy, struct net_device *dev, 3775 u8 *peer, enum nl80211_tdls_operation oper) 3776 { 3777 struct sta_info *sta; 3778 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 3779 3780 if (!(wiphy->flags & WIPHY_FLAG_SUPPORTS_TDLS)) 3781 return -ENOTSUPP; 3782 3783 if (sdata->vif.type != NL80211_IFTYPE_STATION) 3784 return -EINVAL; 3785 3786 tdls_dbg(sdata, "TDLS oper %d peer %pM\n", oper, peer); 3787 3788 switch (oper) { 3789 case NL80211_TDLS_ENABLE_LINK: 3790 rcu_read_lock(); 3791 sta = sta_info_get(sdata, peer); 3792 if (!sta) { 3793 rcu_read_unlock(); 3794 return -ENOLINK; 3795 } 3796 3797 set_sta_flag(sta, WLAN_STA_TDLS_PEER_AUTH); 3798 rcu_read_unlock(); 3799 break; 3800 case NL80211_TDLS_DISABLE_LINK: 3801 return sta_info_destroy_addr(sdata, peer); 3802 case NL80211_TDLS_TEARDOWN: 3803 case NL80211_TDLS_SETUP: 3804 case NL80211_TDLS_DISCOVERY_REQ: 3805 /* We don't support in-driver setup/teardown/discovery */ 3806 return -ENOTSUPP; 3807 default: 3808 return -ENOTSUPP; 3809 } 3810 3811 return 0; 3812 } 3813 3814 static int ieee80211_probe_client(struct wiphy *wiphy, struct net_device *dev, 3815 const u8 *peer, u64 *cookie) 3816 { 3817 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 3818 struct ieee80211_local *local = sdata->local; 3819 struct ieee80211_qos_hdr *nullfunc; 3820 struct sk_buff *skb; 3821 int size = sizeof(*nullfunc); 3822 __le16 fc; 3823 bool qos; 3824 struct ieee80211_tx_info *info; 3825 struct sta_info *sta; 3826 struct ieee80211_chanctx_conf *chanctx_conf; 3827 enum ieee80211_band band; 3828 3829 rcu_read_lock(); 3830 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); 3831 if (WARN_ON(!chanctx_conf)) { 3832 rcu_read_unlock(); 3833 return -EINVAL; 3834 } 3835 band = chanctx_conf->def.chan->band; 3836 sta = sta_info_get_bss(sdata, peer); 3837 if (sta) { 3838 qos = test_sta_flag(sta, WLAN_STA_WME); 3839 } else { 3840 rcu_read_unlock(); 3841 return -ENOLINK; 3842 } 3843 3844 if (qos) { 3845 fc = cpu_to_le16(IEEE80211_FTYPE_DATA | 3846 IEEE80211_STYPE_QOS_NULLFUNC | 3847 IEEE80211_FCTL_FROMDS); 3848 } else { 3849 size -= 2; 3850 fc = cpu_to_le16(IEEE80211_FTYPE_DATA | 3851 IEEE80211_STYPE_NULLFUNC | 3852 IEEE80211_FCTL_FROMDS); 3853 } 3854 3855 skb = dev_alloc_skb(local->hw.extra_tx_headroom + size); 3856 if (!skb) { 3857 rcu_read_unlock(); 3858 return -ENOMEM; 3859 } 3860 3861 skb->dev = dev; 3862 3863 skb_reserve(skb, local->hw.extra_tx_headroom); 3864 3865 nullfunc = (void *) skb_put(skb, size); 3866 nullfunc->frame_control = fc; 3867 nullfunc->duration_id = 0; 3868 memcpy(nullfunc->addr1, sta->sta.addr, ETH_ALEN); 3869 memcpy(nullfunc->addr2, sdata->vif.addr, ETH_ALEN); 3870 memcpy(nullfunc->addr3, sdata->vif.addr, ETH_ALEN); 3871 nullfunc->seq_ctrl = 0; 3872 3873 info = IEEE80211_SKB_CB(skb); 3874 3875 info->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS | 3876 IEEE80211_TX_INTFL_NL80211_FRAME_TX; 3877 3878 skb_set_queue_mapping(skb, IEEE80211_AC_VO); 3879 skb->priority = 7; 3880 if (qos) 3881 nullfunc->qos_ctrl = cpu_to_le16(7); 3882 3883 local_bh_disable(); 3884 ieee80211_xmit(sdata, skb, band); 3885 local_bh_enable(); 3886 rcu_read_unlock(); 3887 3888 *cookie = (unsigned long) skb; 3889 return 0; 3890 } 3891 3892 static int ieee80211_cfg_get_channel(struct wiphy *wiphy, 3893 struct wireless_dev *wdev, 3894 struct cfg80211_chan_def *chandef) 3895 { 3896 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 3897 struct ieee80211_local *local = wiphy_priv(wiphy); 3898 struct ieee80211_chanctx_conf *chanctx_conf; 3899 int ret = -ENODATA; 3900 3901 rcu_read_lock(); 3902 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); 3903 if (chanctx_conf) { 3904 *chandef = chanctx_conf->def; 3905 ret = 0; 3906 } else if (local->open_count > 0 && 3907 local->open_count == local->monitors && 3908 sdata->vif.type == NL80211_IFTYPE_MONITOR) { 3909 if (local->use_chanctx) 3910 *chandef = local->monitor_chandef; 3911 else 3912 *chandef = local->_oper_chandef; 3913 ret = 0; 3914 } 3915 rcu_read_unlock(); 3916 3917 return ret; 3918 } 3919 3920 #ifdef CONFIG_PM 3921 static void ieee80211_set_wakeup(struct wiphy *wiphy, bool enabled) 3922 { 3923 drv_set_wakeup(wiphy_priv(wiphy), enabled); 3924 } 3925 #endif 3926 3927 static int ieee80211_set_qos_map(struct wiphy *wiphy, 3928 struct net_device *dev, 3929 struct cfg80211_qos_map *qos_map) 3930 { 3931 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 3932 struct mac80211_qos_map *new_qos_map, *old_qos_map; 3933 3934 if (qos_map) { 3935 new_qos_map = kzalloc(sizeof(*new_qos_map), GFP_KERNEL); 3936 if (!new_qos_map) 3937 return -ENOMEM; 3938 memcpy(&new_qos_map->qos_map, qos_map, sizeof(*qos_map)); 3939 } else { 3940 /* A NULL qos_map was passed to disable QoS mapping */ 3941 new_qos_map = NULL; 3942 } 3943 3944 old_qos_map = sdata_dereference(sdata->qos_map, sdata); 3945 rcu_assign_pointer(sdata->qos_map, new_qos_map); 3946 if (old_qos_map) 3947 kfree_rcu(old_qos_map, rcu_head); 3948 3949 return 0; 3950 } 3951 3952 const struct cfg80211_ops mac80211_config_ops = { 3953 .add_virtual_intf = ieee80211_add_iface, 3954 .del_virtual_intf = ieee80211_del_iface, 3955 .change_virtual_intf = ieee80211_change_iface, 3956 .start_p2p_device = ieee80211_start_p2p_device, 3957 .stop_p2p_device = ieee80211_stop_p2p_device, 3958 .add_key = ieee80211_add_key, 3959 .del_key = ieee80211_del_key, 3960 .get_key = ieee80211_get_key, 3961 .set_default_key = ieee80211_config_default_key, 3962 .set_default_mgmt_key = ieee80211_config_default_mgmt_key, 3963 .start_ap = ieee80211_start_ap, 3964 .change_beacon = ieee80211_change_beacon, 3965 .stop_ap = ieee80211_stop_ap, 3966 .add_station = ieee80211_add_station, 3967 .del_station = ieee80211_del_station, 3968 .change_station = ieee80211_change_station, 3969 .get_station = ieee80211_get_station, 3970 .dump_station = ieee80211_dump_station, 3971 .dump_survey = ieee80211_dump_survey, 3972 #ifdef CONFIG_MAC80211_MESH 3973 .add_mpath = ieee80211_add_mpath, 3974 .del_mpath = ieee80211_del_mpath, 3975 .change_mpath = ieee80211_change_mpath, 3976 .get_mpath = ieee80211_get_mpath, 3977 .dump_mpath = ieee80211_dump_mpath, 3978 .update_mesh_config = ieee80211_update_mesh_config, 3979 .get_mesh_config = ieee80211_get_mesh_config, 3980 .join_mesh = ieee80211_join_mesh, 3981 .leave_mesh = ieee80211_leave_mesh, 3982 #endif 3983 .change_bss = ieee80211_change_bss, 3984 .set_txq_params = ieee80211_set_txq_params, 3985 .set_monitor_channel = ieee80211_set_monitor_channel, 3986 .suspend = ieee80211_suspend, 3987 .resume = ieee80211_resume, 3988 .scan = ieee80211_scan, 3989 .sched_scan_start = ieee80211_sched_scan_start, 3990 .sched_scan_stop = ieee80211_sched_scan_stop, 3991 .auth = ieee80211_auth, 3992 .assoc = ieee80211_assoc, 3993 .deauth = ieee80211_deauth, 3994 .disassoc = ieee80211_disassoc, 3995 .join_ibss = ieee80211_join_ibss, 3996 .leave_ibss = ieee80211_leave_ibss, 3997 .set_mcast_rate = ieee80211_set_mcast_rate, 3998 .set_wiphy_params = ieee80211_set_wiphy_params, 3999 .set_tx_power = ieee80211_set_tx_power, 4000 .get_tx_power = ieee80211_get_tx_power, 4001 .set_wds_peer = ieee80211_set_wds_peer, 4002 .rfkill_poll = ieee80211_rfkill_poll, 4003 CFG80211_TESTMODE_CMD(ieee80211_testmode_cmd) 4004 CFG80211_TESTMODE_DUMP(ieee80211_testmode_dump) 4005 .set_power_mgmt = ieee80211_set_power_mgmt, 4006 .set_bitrate_mask = ieee80211_set_bitrate_mask, 4007 .remain_on_channel = ieee80211_remain_on_channel, 4008 .cancel_remain_on_channel = ieee80211_cancel_remain_on_channel, 4009 .mgmt_tx = ieee80211_mgmt_tx, 4010 .mgmt_tx_cancel_wait = ieee80211_mgmt_tx_cancel_wait, 4011 .set_cqm_rssi_config = ieee80211_set_cqm_rssi_config, 4012 .mgmt_frame_register = ieee80211_mgmt_frame_register, 4013 .set_antenna = ieee80211_set_antenna, 4014 .get_antenna = ieee80211_get_antenna, 4015 .set_ringparam = ieee80211_set_ringparam, 4016 .get_ringparam = ieee80211_get_ringparam, 4017 .set_rekey_data = ieee80211_set_rekey_data, 4018 .tdls_oper = ieee80211_tdls_oper, 4019 .tdls_mgmt = ieee80211_tdls_mgmt, 4020 .probe_client = ieee80211_probe_client, 4021 .set_noack_map = ieee80211_set_noack_map, 4022 #ifdef CONFIG_PM 4023 .set_wakeup = ieee80211_set_wakeup, 4024 #endif 4025 .get_et_sset_count = ieee80211_get_et_sset_count, 4026 .get_et_stats = ieee80211_get_et_stats, 4027 .get_et_strings = ieee80211_get_et_strings, 4028 .get_channel = ieee80211_cfg_get_channel, 4029 .start_radar_detection = ieee80211_start_radar_detection, 4030 .channel_switch = ieee80211_channel_switch, 4031 .set_qos_map = ieee80211_set_qos_map, 4032 }; 4033