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 sta_info *sta = NULL; 137 struct ieee80211_key *key; 138 int err; 139 140 if (!ieee80211_sdata_running(sdata)) 141 return -ENETDOWN; 142 143 /* reject WEP and TKIP keys if WEP failed to initialize */ 144 switch (params->cipher) { 145 case WLAN_CIPHER_SUITE_WEP40: 146 case WLAN_CIPHER_SUITE_TKIP: 147 case WLAN_CIPHER_SUITE_WEP104: 148 if (IS_ERR(sdata->local->wep_tx_tfm)) 149 return -EINVAL; 150 break; 151 default: 152 break; 153 } 154 155 key = ieee80211_key_alloc(params->cipher, key_idx, params->key_len, 156 params->key, params->seq_len, params->seq); 157 if (IS_ERR(key)) 158 return PTR_ERR(key); 159 160 if (pairwise) 161 key->conf.flags |= IEEE80211_KEY_FLAG_PAIRWISE; 162 163 mutex_lock(&sdata->local->sta_mtx); 164 165 if (mac_addr) { 166 if (ieee80211_vif_is_mesh(&sdata->vif)) 167 sta = sta_info_get(sdata, mac_addr); 168 else 169 sta = sta_info_get_bss(sdata, mac_addr); 170 /* 171 * The ASSOC test makes sure the driver is ready to 172 * receive the key. When wpa_supplicant has roamed 173 * using FT, it attempts to set the key before 174 * association has completed, this rejects that attempt 175 * so it will set the key again after assocation. 176 * 177 * TODO: accept the key if we have a station entry and 178 * add it to the device after the station. 179 */ 180 if (!sta || !test_sta_flag(sta, WLAN_STA_ASSOC)) { 181 ieee80211_key_free_unused(key); 182 err = -ENOENT; 183 goto out_unlock; 184 } 185 } 186 187 switch (sdata->vif.type) { 188 case NL80211_IFTYPE_STATION: 189 if (sdata->u.mgd.mfp != IEEE80211_MFP_DISABLED) 190 key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT; 191 break; 192 case NL80211_IFTYPE_AP: 193 case NL80211_IFTYPE_AP_VLAN: 194 /* Keys without a station are used for TX only */ 195 if (key->sta && test_sta_flag(key->sta, WLAN_STA_MFP)) 196 key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT; 197 break; 198 case NL80211_IFTYPE_ADHOC: 199 /* no MFP (yet) */ 200 break; 201 case NL80211_IFTYPE_MESH_POINT: 202 #ifdef CONFIG_MAC80211_MESH 203 if (sdata->u.mesh.security != IEEE80211_MESH_SEC_NONE) 204 key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT; 205 break; 206 #endif 207 case NL80211_IFTYPE_WDS: 208 case NL80211_IFTYPE_MONITOR: 209 case NL80211_IFTYPE_P2P_DEVICE: 210 case NL80211_IFTYPE_UNSPECIFIED: 211 case NUM_NL80211_IFTYPES: 212 case NL80211_IFTYPE_P2P_CLIENT: 213 case NL80211_IFTYPE_P2P_GO: 214 /* shouldn't happen */ 215 WARN_ON_ONCE(1); 216 break; 217 } 218 219 err = ieee80211_key_link(key, sdata, sta); 220 221 out_unlock: 222 mutex_unlock(&sdata->local->sta_mtx); 223 224 return err; 225 } 226 227 static int ieee80211_del_key(struct wiphy *wiphy, struct net_device *dev, 228 u8 key_idx, bool pairwise, const u8 *mac_addr) 229 { 230 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 231 struct ieee80211_local *local = sdata->local; 232 struct sta_info *sta; 233 struct ieee80211_key *key = NULL; 234 int ret; 235 236 mutex_lock(&local->sta_mtx); 237 mutex_lock(&local->key_mtx); 238 239 if (mac_addr) { 240 ret = -ENOENT; 241 242 sta = sta_info_get_bss(sdata, mac_addr); 243 if (!sta) 244 goto out_unlock; 245 246 if (pairwise) 247 key = key_mtx_dereference(local, sta->ptk); 248 else 249 key = key_mtx_dereference(local, sta->gtk[key_idx]); 250 } else 251 key = key_mtx_dereference(local, sdata->keys[key_idx]); 252 253 if (!key) { 254 ret = -ENOENT; 255 goto out_unlock; 256 } 257 258 ieee80211_key_free(key, true); 259 260 ret = 0; 261 out_unlock: 262 mutex_unlock(&local->key_mtx); 263 mutex_unlock(&local->sta_mtx); 264 265 return ret; 266 } 267 268 static int ieee80211_get_key(struct wiphy *wiphy, struct net_device *dev, 269 u8 key_idx, bool pairwise, const u8 *mac_addr, 270 void *cookie, 271 void (*callback)(void *cookie, 272 struct key_params *params)) 273 { 274 struct ieee80211_sub_if_data *sdata; 275 struct sta_info *sta = NULL; 276 u8 seq[6] = {0}; 277 struct key_params params; 278 struct ieee80211_key *key = NULL; 279 u64 pn64; 280 u32 iv32; 281 u16 iv16; 282 int err = -ENOENT; 283 284 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 285 286 rcu_read_lock(); 287 288 if (mac_addr) { 289 sta = sta_info_get_bss(sdata, mac_addr); 290 if (!sta) 291 goto out; 292 293 if (pairwise) 294 key = rcu_dereference(sta->ptk); 295 else if (key_idx < NUM_DEFAULT_KEYS) 296 key = rcu_dereference(sta->gtk[key_idx]); 297 } else 298 key = rcu_dereference(sdata->keys[key_idx]); 299 300 if (!key) 301 goto out; 302 303 memset(¶ms, 0, sizeof(params)); 304 305 params.cipher = key->conf.cipher; 306 307 switch (key->conf.cipher) { 308 case WLAN_CIPHER_SUITE_TKIP: 309 iv32 = key->u.tkip.tx.iv32; 310 iv16 = key->u.tkip.tx.iv16; 311 312 if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE) 313 drv_get_tkip_seq(sdata->local, 314 key->conf.hw_key_idx, 315 &iv32, &iv16); 316 317 seq[0] = iv16 & 0xff; 318 seq[1] = (iv16 >> 8) & 0xff; 319 seq[2] = iv32 & 0xff; 320 seq[3] = (iv32 >> 8) & 0xff; 321 seq[4] = (iv32 >> 16) & 0xff; 322 seq[5] = (iv32 >> 24) & 0xff; 323 params.seq = seq; 324 params.seq_len = 6; 325 break; 326 case WLAN_CIPHER_SUITE_CCMP: 327 pn64 = atomic64_read(&key->u.ccmp.tx_pn); 328 seq[0] = pn64; 329 seq[1] = pn64 >> 8; 330 seq[2] = pn64 >> 16; 331 seq[3] = pn64 >> 24; 332 seq[4] = pn64 >> 32; 333 seq[5] = pn64 >> 40; 334 params.seq = seq; 335 params.seq_len = 6; 336 break; 337 case WLAN_CIPHER_SUITE_AES_CMAC: 338 pn64 = atomic64_read(&key->u.aes_cmac.tx_pn); 339 seq[0] = pn64; 340 seq[1] = pn64 >> 8; 341 seq[2] = pn64 >> 16; 342 seq[3] = pn64 >> 24; 343 seq[4] = pn64 >> 32; 344 seq[5] = pn64 >> 40; 345 params.seq = seq; 346 params.seq_len = 6; 347 break; 348 } 349 350 params.key = key->conf.key; 351 params.key_len = key->conf.keylen; 352 353 callback(cookie, ¶ms); 354 err = 0; 355 356 out: 357 rcu_read_unlock(); 358 return err; 359 } 360 361 static int ieee80211_config_default_key(struct wiphy *wiphy, 362 struct net_device *dev, 363 u8 key_idx, bool uni, 364 bool multi) 365 { 366 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 367 368 ieee80211_set_default_key(sdata, key_idx, uni, multi); 369 370 return 0; 371 } 372 373 static int ieee80211_config_default_mgmt_key(struct wiphy *wiphy, 374 struct net_device *dev, 375 u8 key_idx) 376 { 377 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 378 379 ieee80211_set_default_mgmt_key(sdata, key_idx); 380 381 return 0; 382 } 383 384 void sta_set_rate_info_tx(struct sta_info *sta, 385 const struct ieee80211_tx_rate *rate, 386 struct rate_info *rinfo) 387 { 388 rinfo->flags = 0; 389 if (rate->flags & IEEE80211_TX_RC_MCS) { 390 rinfo->flags |= RATE_INFO_FLAGS_MCS; 391 rinfo->mcs = rate->idx; 392 } else if (rate->flags & IEEE80211_TX_RC_VHT_MCS) { 393 rinfo->flags |= RATE_INFO_FLAGS_VHT_MCS; 394 rinfo->mcs = ieee80211_rate_get_vht_mcs(rate); 395 rinfo->nss = ieee80211_rate_get_vht_nss(rate); 396 } else { 397 struct ieee80211_supported_band *sband; 398 sband = sta->local->hw.wiphy->bands[ 399 ieee80211_get_sdata_band(sta->sdata)]; 400 rinfo->legacy = sband->bitrates[rate->idx].bitrate; 401 } 402 if (rate->flags & IEEE80211_TX_RC_40_MHZ_WIDTH) 403 rinfo->flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH; 404 if (rate->flags & IEEE80211_TX_RC_80_MHZ_WIDTH) 405 rinfo->flags |= RATE_INFO_FLAGS_80_MHZ_WIDTH; 406 if (rate->flags & IEEE80211_TX_RC_160_MHZ_WIDTH) 407 rinfo->flags |= RATE_INFO_FLAGS_160_MHZ_WIDTH; 408 if (rate->flags & IEEE80211_TX_RC_SHORT_GI) 409 rinfo->flags |= RATE_INFO_FLAGS_SHORT_GI; 410 } 411 412 void sta_set_rate_info_rx(struct sta_info *sta, struct rate_info *rinfo) 413 { 414 rinfo->flags = 0; 415 416 if (sta->last_rx_rate_flag & RX_FLAG_HT) { 417 rinfo->flags |= RATE_INFO_FLAGS_MCS; 418 rinfo->mcs = sta->last_rx_rate_idx; 419 } else if (sta->last_rx_rate_flag & RX_FLAG_VHT) { 420 rinfo->flags |= RATE_INFO_FLAGS_VHT_MCS; 421 rinfo->nss = sta->last_rx_rate_vht_nss; 422 rinfo->mcs = sta->last_rx_rate_idx; 423 } else { 424 struct ieee80211_supported_band *sband; 425 426 sband = sta->local->hw.wiphy->bands[ 427 ieee80211_get_sdata_band(sta->sdata)]; 428 rinfo->legacy = 429 sband->bitrates[sta->last_rx_rate_idx].bitrate; 430 } 431 432 if (sta->last_rx_rate_flag & RX_FLAG_40MHZ) 433 rinfo->flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH; 434 if (sta->last_rx_rate_flag & RX_FLAG_SHORT_GI) 435 rinfo->flags |= RATE_INFO_FLAGS_SHORT_GI; 436 if (sta->last_rx_rate_flag & RX_FLAG_80MHZ) 437 rinfo->flags |= RATE_INFO_FLAGS_80_MHZ_WIDTH; 438 if (sta->last_rx_rate_flag & RX_FLAG_80P80MHZ) 439 rinfo->flags |= RATE_INFO_FLAGS_80P80_MHZ_WIDTH; 440 if (sta->last_rx_rate_flag & RX_FLAG_160MHZ) 441 rinfo->flags |= RATE_INFO_FLAGS_160_MHZ_WIDTH; 442 } 443 444 static void sta_set_sinfo(struct sta_info *sta, struct station_info *sinfo) 445 { 446 struct ieee80211_sub_if_data *sdata = sta->sdata; 447 struct ieee80211_local *local = sdata->local; 448 struct timespec uptime; 449 u64 packets = 0; 450 int i, ac; 451 452 sinfo->generation = sdata->local->sta_generation; 453 454 sinfo->filled = STATION_INFO_INACTIVE_TIME | 455 STATION_INFO_RX_BYTES64 | 456 STATION_INFO_TX_BYTES64 | 457 STATION_INFO_RX_PACKETS | 458 STATION_INFO_TX_PACKETS | 459 STATION_INFO_TX_RETRIES | 460 STATION_INFO_TX_FAILED | 461 STATION_INFO_TX_BITRATE | 462 STATION_INFO_RX_BITRATE | 463 STATION_INFO_RX_DROP_MISC | 464 STATION_INFO_BSS_PARAM | 465 STATION_INFO_CONNECTED_TIME | 466 STATION_INFO_STA_FLAGS | 467 STATION_INFO_BEACON_LOSS_COUNT; 468 469 do_posix_clock_monotonic_gettime(&uptime); 470 sinfo->connected_time = uptime.tv_sec - sta->last_connected; 471 472 sinfo->inactive_time = jiffies_to_msecs(jiffies - sta->last_rx); 473 sinfo->tx_bytes = 0; 474 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) { 475 sinfo->tx_bytes += sta->tx_bytes[ac]; 476 packets += sta->tx_packets[ac]; 477 } 478 sinfo->tx_packets = packets; 479 sinfo->rx_bytes = sta->rx_bytes; 480 sinfo->rx_packets = sta->rx_packets; 481 sinfo->tx_retries = sta->tx_retry_count; 482 sinfo->tx_failed = sta->tx_retry_failed; 483 sinfo->rx_dropped_misc = sta->rx_dropped; 484 sinfo->beacon_loss_count = sta->beacon_loss_count; 485 486 if ((sta->local->hw.flags & IEEE80211_HW_SIGNAL_DBM) || 487 (sta->local->hw.flags & IEEE80211_HW_SIGNAL_UNSPEC)) { 488 sinfo->filled |= STATION_INFO_SIGNAL | STATION_INFO_SIGNAL_AVG; 489 if (!local->ops->get_rssi || 490 drv_get_rssi(local, sdata, &sta->sta, &sinfo->signal)) 491 sinfo->signal = (s8)sta->last_signal; 492 sinfo->signal_avg = (s8) -ewma_read(&sta->avg_signal); 493 } 494 if (sta->chains) { 495 sinfo->filled |= STATION_INFO_CHAIN_SIGNAL | 496 STATION_INFO_CHAIN_SIGNAL_AVG; 497 498 sinfo->chains = sta->chains; 499 for (i = 0; i < ARRAY_SIZE(sinfo->chain_signal); i++) { 500 sinfo->chain_signal[i] = sta->chain_signal_last[i]; 501 sinfo->chain_signal_avg[i] = 502 (s8) -ewma_read(&sta->chain_signal_avg[i]); 503 } 504 } 505 506 sta_set_rate_info_tx(sta, &sta->last_tx_rate, &sinfo->txrate); 507 sta_set_rate_info_rx(sta, &sinfo->rxrate); 508 509 if (ieee80211_vif_is_mesh(&sdata->vif)) { 510 #ifdef CONFIG_MAC80211_MESH 511 sinfo->filled |= STATION_INFO_LLID | 512 STATION_INFO_PLID | 513 STATION_INFO_PLINK_STATE | 514 STATION_INFO_LOCAL_PM | 515 STATION_INFO_PEER_PM | 516 STATION_INFO_NONPEER_PM; 517 518 sinfo->llid = le16_to_cpu(sta->llid); 519 sinfo->plid = le16_to_cpu(sta->plid); 520 sinfo->plink_state = sta->plink_state; 521 if (test_sta_flag(sta, WLAN_STA_TOFFSET_KNOWN)) { 522 sinfo->filled |= STATION_INFO_T_OFFSET; 523 sinfo->t_offset = sta->t_offset; 524 } 525 sinfo->local_pm = sta->local_pm; 526 sinfo->peer_pm = sta->peer_pm; 527 sinfo->nonpeer_pm = sta->nonpeer_pm; 528 #endif 529 } 530 531 sinfo->bss_param.flags = 0; 532 if (sdata->vif.bss_conf.use_cts_prot) 533 sinfo->bss_param.flags |= BSS_PARAM_FLAGS_CTS_PROT; 534 if (sdata->vif.bss_conf.use_short_preamble) 535 sinfo->bss_param.flags |= BSS_PARAM_FLAGS_SHORT_PREAMBLE; 536 if (sdata->vif.bss_conf.use_short_slot) 537 sinfo->bss_param.flags |= BSS_PARAM_FLAGS_SHORT_SLOT_TIME; 538 sinfo->bss_param.dtim_period = sdata->local->hw.conf.ps_dtim_period; 539 sinfo->bss_param.beacon_interval = sdata->vif.bss_conf.beacon_int; 540 541 sinfo->sta_flags.set = 0; 542 sinfo->sta_flags.mask = BIT(NL80211_STA_FLAG_AUTHORIZED) | 543 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) | 544 BIT(NL80211_STA_FLAG_WME) | 545 BIT(NL80211_STA_FLAG_MFP) | 546 BIT(NL80211_STA_FLAG_AUTHENTICATED) | 547 BIT(NL80211_STA_FLAG_ASSOCIATED) | 548 BIT(NL80211_STA_FLAG_TDLS_PEER); 549 if (test_sta_flag(sta, WLAN_STA_AUTHORIZED)) 550 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_AUTHORIZED); 551 if (test_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE)) 552 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_SHORT_PREAMBLE); 553 if (test_sta_flag(sta, WLAN_STA_WME)) 554 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_WME); 555 if (test_sta_flag(sta, WLAN_STA_MFP)) 556 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_MFP); 557 if (test_sta_flag(sta, WLAN_STA_AUTH)) 558 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_AUTHENTICATED); 559 if (test_sta_flag(sta, WLAN_STA_ASSOC)) 560 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_ASSOCIATED); 561 if (test_sta_flag(sta, WLAN_STA_TDLS_PEER)) 562 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_TDLS_PEER); 563 } 564 565 static const char ieee80211_gstrings_sta_stats[][ETH_GSTRING_LEN] = { 566 "rx_packets", "rx_bytes", "wep_weak_iv_count", 567 "rx_duplicates", "rx_fragments", "rx_dropped", 568 "tx_packets", "tx_bytes", "tx_fragments", 569 "tx_filtered", "tx_retry_failed", "tx_retries", 570 "beacon_loss", "sta_state", "txrate", "rxrate", "signal", 571 "channel", "noise", "ch_time", "ch_time_busy", 572 "ch_time_ext_busy", "ch_time_rx", "ch_time_tx" 573 }; 574 #define STA_STATS_LEN ARRAY_SIZE(ieee80211_gstrings_sta_stats) 575 576 static int ieee80211_get_et_sset_count(struct wiphy *wiphy, 577 struct net_device *dev, 578 int sset) 579 { 580 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 581 int rv = 0; 582 583 if (sset == ETH_SS_STATS) 584 rv += STA_STATS_LEN; 585 586 rv += drv_get_et_sset_count(sdata, sset); 587 588 if (rv == 0) 589 return -EOPNOTSUPP; 590 return rv; 591 } 592 593 static void ieee80211_get_et_stats(struct wiphy *wiphy, 594 struct net_device *dev, 595 struct ethtool_stats *stats, 596 u64 *data) 597 { 598 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 599 struct ieee80211_chanctx_conf *chanctx_conf; 600 struct ieee80211_channel *channel; 601 struct sta_info *sta; 602 struct ieee80211_local *local = sdata->local; 603 struct station_info sinfo; 604 struct survey_info survey; 605 int i, q; 606 #define STA_STATS_SURVEY_LEN 7 607 608 memset(data, 0, sizeof(u64) * STA_STATS_LEN); 609 610 #define ADD_STA_STATS(sta) \ 611 do { \ 612 data[i++] += sta->rx_packets; \ 613 data[i++] += sta->rx_bytes; \ 614 data[i++] += sta->wep_weak_iv_count; \ 615 data[i++] += sta->num_duplicates; \ 616 data[i++] += sta->rx_fragments; \ 617 data[i++] += sta->rx_dropped; \ 618 \ 619 data[i++] += sinfo.tx_packets; \ 620 data[i++] += sinfo.tx_bytes; \ 621 data[i++] += sta->tx_fragments; \ 622 data[i++] += sta->tx_filtered_count; \ 623 data[i++] += sta->tx_retry_failed; \ 624 data[i++] += sta->tx_retry_count; \ 625 data[i++] += sta->beacon_loss_count; \ 626 } while (0) 627 628 /* For Managed stations, find the single station based on BSSID 629 * and use that. For interface types, iterate through all available 630 * stations and add stats for any station that is assigned to this 631 * network device. 632 */ 633 634 mutex_lock(&local->sta_mtx); 635 636 if (sdata->vif.type == NL80211_IFTYPE_STATION) { 637 sta = sta_info_get_bss(sdata, sdata->u.mgd.bssid); 638 639 if (!(sta && !WARN_ON(sta->sdata->dev != dev))) 640 goto do_survey; 641 642 sinfo.filled = 0; 643 sta_set_sinfo(sta, &sinfo); 644 645 i = 0; 646 ADD_STA_STATS(sta); 647 648 data[i++] = sta->sta_state; 649 650 651 if (sinfo.filled & STATION_INFO_TX_BITRATE) 652 data[i] = 100000 * 653 cfg80211_calculate_bitrate(&sinfo.txrate); 654 i++; 655 if (sinfo.filled & STATION_INFO_RX_BITRATE) 656 data[i] = 100000 * 657 cfg80211_calculate_bitrate(&sinfo.rxrate); 658 i++; 659 660 if (sinfo.filled & STATION_INFO_SIGNAL_AVG) 661 data[i] = (u8)sinfo.signal_avg; 662 i++; 663 } else { 664 list_for_each_entry(sta, &local->sta_list, list) { 665 /* Make sure this station belongs to the proper dev */ 666 if (sta->sdata->dev != dev) 667 continue; 668 669 sinfo.filled = 0; 670 sta_set_sinfo(sta, &sinfo); 671 i = 0; 672 ADD_STA_STATS(sta); 673 } 674 } 675 676 do_survey: 677 i = STA_STATS_LEN - STA_STATS_SURVEY_LEN; 678 /* Get survey stats for current channel */ 679 survey.filled = 0; 680 681 rcu_read_lock(); 682 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); 683 if (chanctx_conf) 684 channel = chanctx_conf->def.chan; 685 else 686 channel = NULL; 687 rcu_read_unlock(); 688 689 if (channel) { 690 q = 0; 691 do { 692 survey.filled = 0; 693 if (drv_get_survey(local, q, &survey) != 0) { 694 survey.filled = 0; 695 break; 696 } 697 q++; 698 } while (channel != survey.channel); 699 } 700 701 if (survey.filled) 702 data[i++] = survey.channel->center_freq; 703 else 704 data[i++] = 0; 705 if (survey.filled & SURVEY_INFO_NOISE_DBM) 706 data[i++] = (u8)survey.noise; 707 else 708 data[i++] = -1LL; 709 if (survey.filled & SURVEY_INFO_CHANNEL_TIME) 710 data[i++] = survey.channel_time; 711 else 712 data[i++] = -1LL; 713 if (survey.filled & SURVEY_INFO_CHANNEL_TIME_BUSY) 714 data[i++] = survey.channel_time_busy; 715 else 716 data[i++] = -1LL; 717 if (survey.filled & SURVEY_INFO_CHANNEL_TIME_EXT_BUSY) 718 data[i++] = survey.channel_time_ext_busy; 719 else 720 data[i++] = -1LL; 721 if (survey.filled & SURVEY_INFO_CHANNEL_TIME_RX) 722 data[i++] = survey.channel_time_rx; 723 else 724 data[i++] = -1LL; 725 if (survey.filled & SURVEY_INFO_CHANNEL_TIME_TX) 726 data[i++] = survey.channel_time_tx; 727 else 728 data[i++] = -1LL; 729 730 mutex_unlock(&local->sta_mtx); 731 732 if (WARN_ON(i != STA_STATS_LEN)) 733 return; 734 735 drv_get_et_stats(sdata, stats, &(data[STA_STATS_LEN])); 736 } 737 738 static void ieee80211_get_et_strings(struct wiphy *wiphy, 739 struct net_device *dev, 740 u32 sset, u8 *data) 741 { 742 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 743 int sz_sta_stats = 0; 744 745 if (sset == ETH_SS_STATS) { 746 sz_sta_stats = sizeof(ieee80211_gstrings_sta_stats); 747 memcpy(data, ieee80211_gstrings_sta_stats, sz_sta_stats); 748 } 749 drv_get_et_strings(sdata, sset, &(data[sz_sta_stats])); 750 } 751 752 static int ieee80211_dump_station(struct wiphy *wiphy, struct net_device *dev, 753 int idx, u8 *mac, struct station_info *sinfo) 754 { 755 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 756 struct ieee80211_local *local = sdata->local; 757 struct sta_info *sta; 758 int ret = -ENOENT; 759 760 mutex_lock(&local->sta_mtx); 761 762 sta = sta_info_get_by_idx(sdata, idx); 763 if (sta) { 764 ret = 0; 765 memcpy(mac, sta->sta.addr, ETH_ALEN); 766 sta_set_sinfo(sta, sinfo); 767 } 768 769 mutex_unlock(&local->sta_mtx); 770 771 return ret; 772 } 773 774 static int ieee80211_dump_survey(struct wiphy *wiphy, struct net_device *dev, 775 int idx, struct survey_info *survey) 776 { 777 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); 778 779 return drv_get_survey(local, idx, survey); 780 } 781 782 static int ieee80211_get_station(struct wiphy *wiphy, struct net_device *dev, 783 u8 *mac, struct station_info *sinfo) 784 { 785 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 786 struct ieee80211_local *local = sdata->local; 787 struct sta_info *sta; 788 int ret = -ENOENT; 789 790 mutex_lock(&local->sta_mtx); 791 792 sta = sta_info_get_bss(sdata, mac); 793 if (sta) { 794 ret = 0; 795 sta_set_sinfo(sta, sinfo); 796 } 797 798 mutex_unlock(&local->sta_mtx); 799 800 return ret; 801 } 802 803 static int ieee80211_set_monitor_channel(struct wiphy *wiphy, 804 struct cfg80211_chan_def *chandef) 805 { 806 struct ieee80211_local *local = wiphy_priv(wiphy); 807 struct ieee80211_sub_if_data *sdata; 808 int ret = 0; 809 810 if (cfg80211_chandef_identical(&local->monitor_chandef, chandef)) 811 return 0; 812 813 mutex_lock(&local->iflist_mtx); 814 if (local->use_chanctx) { 815 sdata = rcu_dereference_protected( 816 local->monitor_sdata, 817 lockdep_is_held(&local->iflist_mtx)); 818 if (sdata) { 819 ieee80211_vif_release_channel(sdata); 820 ret = ieee80211_vif_use_channel(sdata, chandef, 821 IEEE80211_CHANCTX_EXCLUSIVE); 822 } 823 } else if (local->open_count == local->monitors) { 824 local->_oper_chandef = *chandef; 825 ieee80211_hw_config(local, 0); 826 } 827 828 if (ret == 0) 829 local->monitor_chandef = *chandef; 830 mutex_unlock(&local->iflist_mtx); 831 832 return ret; 833 } 834 835 static int ieee80211_set_probe_resp(struct ieee80211_sub_if_data *sdata, 836 const u8 *resp, size_t resp_len) 837 { 838 struct probe_resp *new, *old; 839 840 if (!resp || !resp_len) 841 return 1; 842 843 old = rtnl_dereference(sdata->u.ap.probe_resp); 844 845 new = kzalloc(sizeof(struct probe_resp) + resp_len, GFP_KERNEL); 846 if (!new) 847 return -ENOMEM; 848 849 new->len = resp_len; 850 memcpy(new->data, resp, resp_len); 851 852 rcu_assign_pointer(sdata->u.ap.probe_resp, new); 853 if (old) 854 kfree_rcu(old, rcu_head); 855 856 return 0; 857 } 858 859 static int ieee80211_assign_beacon(struct ieee80211_sub_if_data *sdata, 860 struct cfg80211_beacon_data *params) 861 { 862 struct beacon_data *new, *old; 863 int new_head_len, new_tail_len; 864 int size, err; 865 u32 changed = BSS_CHANGED_BEACON; 866 867 old = rtnl_dereference(sdata->u.ap.beacon); 868 869 /* Need to have a beacon head if we don't have one yet */ 870 if (!params->head && !old) 871 return -EINVAL; 872 873 /* new or old head? */ 874 if (params->head) 875 new_head_len = params->head_len; 876 else 877 new_head_len = old->head_len; 878 879 /* new or old tail? */ 880 if (params->tail || !old) 881 /* params->tail_len will be zero for !params->tail */ 882 new_tail_len = params->tail_len; 883 else 884 new_tail_len = old->tail_len; 885 886 size = sizeof(*new) + new_head_len + new_tail_len; 887 888 new = kzalloc(size, GFP_KERNEL); 889 if (!new) 890 return -ENOMEM; 891 892 /* start filling the new info now */ 893 894 /* 895 * pointers go into the block we allocated, 896 * memory is | beacon_data | head | tail | 897 */ 898 new->head = ((u8 *) new) + sizeof(*new); 899 new->tail = new->head + new_head_len; 900 new->head_len = new_head_len; 901 new->tail_len = new_tail_len; 902 903 /* copy in head */ 904 if (params->head) 905 memcpy(new->head, params->head, new_head_len); 906 else 907 memcpy(new->head, old->head, new_head_len); 908 909 /* copy in optional tail */ 910 if (params->tail) 911 memcpy(new->tail, params->tail, new_tail_len); 912 else 913 if (old) 914 memcpy(new->tail, old->tail, new_tail_len); 915 916 err = ieee80211_set_probe_resp(sdata, params->probe_resp, 917 params->probe_resp_len); 918 if (err < 0) 919 return err; 920 if (err == 0) 921 changed |= BSS_CHANGED_AP_PROBE_RESP; 922 923 rcu_assign_pointer(sdata->u.ap.beacon, new); 924 925 if (old) 926 kfree_rcu(old, rcu_head); 927 928 return changed; 929 } 930 931 static int ieee80211_start_ap(struct wiphy *wiphy, struct net_device *dev, 932 struct cfg80211_ap_settings *params) 933 { 934 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 935 struct beacon_data *old; 936 struct ieee80211_sub_if_data *vlan; 937 u32 changed = BSS_CHANGED_BEACON_INT | 938 BSS_CHANGED_BEACON_ENABLED | 939 BSS_CHANGED_BEACON | 940 BSS_CHANGED_SSID | 941 BSS_CHANGED_P2P_PS; 942 int err; 943 944 old = rtnl_dereference(sdata->u.ap.beacon); 945 if (old) 946 return -EALREADY; 947 948 /* TODO: make hostapd tell us what it wants */ 949 sdata->smps_mode = IEEE80211_SMPS_OFF; 950 sdata->needed_rx_chains = sdata->local->rx_chains; 951 sdata->radar_required = params->radar_required; 952 953 err = ieee80211_vif_use_channel(sdata, ¶ms->chandef, 954 IEEE80211_CHANCTX_SHARED); 955 if (err) 956 return err; 957 ieee80211_vif_copy_chanctx_to_vlans(sdata, false); 958 959 /* 960 * Apply control port protocol, this allows us to 961 * not encrypt dynamic WEP control frames. 962 */ 963 sdata->control_port_protocol = params->crypto.control_port_ethertype; 964 sdata->control_port_no_encrypt = params->crypto.control_port_no_encrypt; 965 list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) { 966 vlan->control_port_protocol = 967 params->crypto.control_port_ethertype; 968 vlan->control_port_no_encrypt = 969 params->crypto.control_port_no_encrypt; 970 } 971 972 sdata->vif.bss_conf.beacon_int = params->beacon_interval; 973 sdata->vif.bss_conf.dtim_period = params->dtim_period; 974 sdata->vif.bss_conf.enable_beacon = true; 975 976 sdata->vif.bss_conf.ssid_len = params->ssid_len; 977 if (params->ssid_len) 978 memcpy(sdata->vif.bss_conf.ssid, params->ssid, 979 params->ssid_len); 980 sdata->vif.bss_conf.hidden_ssid = 981 (params->hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE); 982 983 memset(&sdata->vif.bss_conf.p2p_noa_attr, 0, 984 sizeof(sdata->vif.bss_conf.p2p_noa_attr)); 985 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow = 986 params->p2p_ctwindow & IEEE80211_P2P_OPPPS_CTWINDOW_MASK; 987 if (params->p2p_opp_ps) 988 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |= 989 IEEE80211_P2P_OPPPS_ENABLE_BIT; 990 991 err = ieee80211_assign_beacon(sdata, ¶ms->beacon); 992 if (err < 0) 993 return err; 994 changed |= err; 995 996 err = drv_start_ap(sdata->local, sdata); 997 if (err) { 998 old = rtnl_dereference(sdata->u.ap.beacon); 999 if (old) 1000 kfree_rcu(old, rcu_head); 1001 RCU_INIT_POINTER(sdata->u.ap.beacon, NULL); 1002 return err; 1003 } 1004 1005 ieee80211_bss_info_change_notify(sdata, changed); 1006 1007 netif_carrier_on(dev); 1008 list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) 1009 netif_carrier_on(vlan->dev); 1010 1011 return 0; 1012 } 1013 1014 static int ieee80211_change_beacon(struct wiphy *wiphy, struct net_device *dev, 1015 struct cfg80211_beacon_data *params) 1016 { 1017 struct ieee80211_sub_if_data *sdata; 1018 struct beacon_data *old; 1019 int err; 1020 1021 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1022 1023 old = rtnl_dereference(sdata->u.ap.beacon); 1024 if (!old) 1025 return -ENOENT; 1026 1027 err = ieee80211_assign_beacon(sdata, params); 1028 if (err < 0) 1029 return err; 1030 ieee80211_bss_info_change_notify(sdata, err); 1031 return 0; 1032 } 1033 1034 static int ieee80211_stop_ap(struct wiphy *wiphy, struct net_device *dev) 1035 { 1036 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1037 struct ieee80211_sub_if_data *vlan; 1038 struct ieee80211_local *local = sdata->local; 1039 struct beacon_data *old_beacon; 1040 struct probe_resp *old_probe_resp; 1041 1042 old_beacon = rtnl_dereference(sdata->u.ap.beacon); 1043 if (!old_beacon) 1044 return -ENOENT; 1045 old_probe_resp = rtnl_dereference(sdata->u.ap.probe_resp); 1046 1047 /* turn off carrier for this interface and dependent VLANs */ 1048 list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) 1049 netif_carrier_off(vlan->dev); 1050 netif_carrier_off(dev); 1051 1052 /* remove beacon and probe response */ 1053 RCU_INIT_POINTER(sdata->u.ap.beacon, NULL); 1054 RCU_INIT_POINTER(sdata->u.ap.probe_resp, NULL); 1055 kfree_rcu(old_beacon, rcu_head); 1056 if (old_probe_resp) 1057 kfree_rcu(old_probe_resp, rcu_head); 1058 1059 list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) 1060 sta_info_flush_defer(vlan); 1061 sta_info_flush_defer(sdata); 1062 synchronize_net(); 1063 rcu_barrier(); 1064 list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) { 1065 sta_info_flush_cleanup(vlan); 1066 ieee80211_free_keys(vlan); 1067 } 1068 sta_info_flush_cleanup(sdata); 1069 ieee80211_free_keys(sdata); 1070 1071 sdata->vif.bss_conf.enable_beacon = false; 1072 sdata->vif.bss_conf.ssid_len = 0; 1073 clear_bit(SDATA_STATE_OFFCHANNEL_BEACON_STOPPED, &sdata->state); 1074 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED); 1075 1076 if (sdata->wdev.cac_started) { 1077 cancel_delayed_work_sync(&sdata->dfs_cac_timer_work); 1078 cfg80211_cac_event(sdata->dev, NL80211_RADAR_CAC_ABORTED, 1079 GFP_KERNEL); 1080 } 1081 1082 drv_stop_ap(sdata->local, sdata); 1083 1084 /* free all potentially still buffered bcast frames */ 1085 local->total_ps_buffered -= skb_queue_len(&sdata->u.ap.ps.bc_buf); 1086 skb_queue_purge(&sdata->u.ap.ps.bc_buf); 1087 1088 ieee80211_vif_copy_chanctx_to_vlans(sdata, true); 1089 ieee80211_vif_release_channel(sdata); 1090 1091 return 0; 1092 } 1093 1094 /* Layer 2 Update frame (802.2 Type 1 LLC XID Update response) */ 1095 struct iapp_layer2_update { 1096 u8 da[ETH_ALEN]; /* broadcast */ 1097 u8 sa[ETH_ALEN]; /* STA addr */ 1098 __be16 len; /* 6 */ 1099 u8 dsap; /* 0 */ 1100 u8 ssap; /* 0 */ 1101 u8 control; 1102 u8 xid_info[3]; 1103 } __packed; 1104 1105 static void ieee80211_send_layer2_update(struct sta_info *sta) 1106 { 1107 struct iapp_layer2_update *msg; 1108 struct sk_buff *skb; 1109 1110 /* Send Level 2 Update Frame to update forwarding tables in layer 2 1111 * bridge devices */ 1112 1113 skb = dev_alloc_skb(sizeof(*msg)); 1114 if (!skb) 1115 return; 1116 msg = (struct iapp_layer2_update *)skb_put(skb, sizeof(*msg)); 1117 1118 /* 802.2 Type 1 Logical Link Control (LLC) Exchange Identifier (XID) 1119 * Update response frame; IEEE Std 802.2-1998, 5.4.1.2.1 */ 1120 1121 eth_broadcast_addr(msg->da); 1122 memcpy(msg->sa, sta->sta.addr, ETH_ALEN); 1123 msg->len = htons(6); 1124 msg->dsap = 0; 1125 msg->ssap = 0x01; /* NULL LSAP, CR Bit: Response */ 1126 msg->control = 0xaf; /* XID response lsb.1111F101. 1127 * F=0 (no poll command; unsolicited frame) */ 1128 msg->xid_info[0] = 0x81; /* XID format identifier */ 1129 msg->xid_info[1] = 1; /* LLC types/classes: Type 1 LLC */ 1130 msg->xid_info[2] = 0; /* XID sender's receive window size (RW) */ 1131 1132 skb->dev = sta->sdata->dev; 1133 skb->protocol = eth_type_trans(skb, sta->sdata->dev); 1134 memset(skb->cb, 0, sizeof(skb->cb)); 1135 netif_rx_ni(skb); 1136 } 1137 1138 static int sta_apply_auth_flags(struct ieee80211_local *local, 1139 struct sta_info *sta, 1140 u32 mask, u32 set) 1141 { 1142 int ret; 1143 1144 if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED) && 1145 set & BIT(NL80211_STA_FLAG_AUTHENTICATED) && 1146 !test_sta_flag(sta, WLAN_STA_AUTH)) { 1147 ret = sta_info_move_state(sta, IEEE80211_STA_AUTH); 1148 if (ret) 1149 return ret; 1150 } 1151 1152 if (mask & BIT(NL80211_STA_FLAG_ASSOCIATED) && 1153 set & BIT(NL80211_STA_FLAG_ASSOCIATED) && 1154 !test_sta_flag(sta, WLAN_STA_ASSOC)) { 1155 ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC); 1156 if (ret) 1157 return ret; 1158 } 1159 1160 if (mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) { 1161 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED)) 1162 ret = sta_info_move_state(sta, IEEE80211_STA_AUTHORIZED); 1163 else if (test_sta_flag(sta, WLAN_STA_AUTHORIZED)) 1164 ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC); 1165 else 1166 ret = 0; 1167 if (ret) 1168 return ret; 1169 } 1170 1171 if (mask & BIT(NL80211_STA_FLAG_ASSOCIATED) && 1172 !(set & BIT(NL80211_STA_FLAG_ASSOCIATED)) && 1173 test_sta_flag(sta, WLAN_STA_ASSOC)) { 1174 ret = sta_info_move_state(sta, IEEE80211_STA_AUTH); 1175 if (ret) 1176 return ret; 1177 } 1178 1179 if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED) && 1180 !(set & BIT(NL80211_STA_FLAG_AUTHENTICATED)) && 1181 test_sta_flag(sta, WLAN_STA_AUTH)) { 1182 ret = sta_info_move_state(sta, IEEE80211_STA_NONE); 1183 if (ret) 1184 return ret; 1185 } 1186 1187 return 0; 1188 } 1189 1190 static int sta_apply_parameters(struct ieee80211_local *local, 1191 struct sta_info *sta, 1192 struct station_parameters *params) 1193 { 1194 int ret = 0; 1195 u32 rates; 1196 int i, j; 1197 struct ieee80211_supported_band *sband; 1198 struct ieee80211_sub_if_data *sdata = sta->sdata; 1199 enum ieee80211_band band = ieee80211_get_sdata_band(sdata); 1200 u32 mask, set; 1201 1202 sband = local->hw.wiphy->bands[band]; 1203 1204 mask = params->sta_flags_mask; 1205 set = params->sta_flags_set; 1206 1207 if (ieee80211_vif_is_mesh(&sdata->vif)) { 1208 /* 1209 * In mesh mode, ASSOCIATED isn't part of the nl80211 1210 * API but must follow AUTHENTICATED for driver state. 1211 */ 1212 if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED)) 1213 mask |= BIT(NL80211_STA_FLAG_ASSOCIATED); 1214 if (set & BIT(NL80211_STA_FLAG_AUTHENTICATED)) 1215 set |= BIT(NL80211_STA_FLAG_ASSOCIATED); 1216 } else if (test_sta_flag(sta, WLAN_STA_TDLS_PEER)) { 1217 /* 1218 * TDLS -- everything follows authorized, but 1219 * only becoming authorized is possible, not 1220 * going back 1221 */ 1222 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED)) { 1223 set |= BIT(NL80211_STA_FLAG_AUTHENTICATED) | 1224 BIT(NL80211_STA_FLAG_ASSOCIATED); 1225 mask |= BIT(NL80211_STA_FLAG_AUTHENTICATED) | 1226 BIT(NL80211_STA_FLAG_ASSOCIATED); 1227 } 1228 } 1229 1230 ret = sta_apply_auth_flags(local, sta, mask, set); 1231 if (ret) 1232 return ret; 1233 1234 if (mask & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE)) { 1235 if (set & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE)) 1236 set_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE); 1237 else 1238 clear_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE); 1239 } 1240 1241 if (mask & BIT(NL80211_STA_FLAG_WME)) { 1242 if (set & BIT(NL80211_STA_FLAG_WME)) { 1243 set_sta_flag(sta, WLAN_STA_WME); 1244 sta->sta.wme = true; 1245 } else { 1246 clear_sta_flag(sta, WLAN_STA_WME); 1247 sta->sta.wme = false; 1248 } 1249 } 1250 1251 if (mask & BIT(NL80211_STA_FLAG_MFP)) { 1252 if (set & BIT(NL80211_STA_FLAG_MFP)) 1253 set_sta_flag(sta, WLAN_STA_MFP); 1254 else 1255 clear_sta_flag(sta, WLAN_STA_MFP); 1256 } 1257 1258 if (mask & BIT(NL80211_STA_FLAG_TDLS_PEER)) { 1259 if (set & BIT(NL80211_STA_FLAG_TDLS_PEER)) 1260 set_sta_flag(sta, WLAN_STA_TDLS_PEER); 1261 else 1262 clear_sta_flag(sta, WLAN_STA_TDLS_PEER); 1263 } 1264 1265 if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD) { 1266 sta->sta.uapsd_queues = params->uapsd_queues; 1267 sta->sta.max_sp = params->max_sp; 1268 } 1269 1270 /* 1271 * cfg80211 validates this (1-2007) and allows setting the AID 1272 * only when creating a new station entry 1273 */ 1274 if (params->aid) 1275 sta->sta.aid = params->aid; 1276 1277 /* 1278 * Some of the following updates would be racy if called on an 1279 * existing station, via ieee80211_change_station(). However, 1280 * all such changes are rejected by cfg80211 except for updates 1281 * changing the supported rates on an existing but not yet used 1282 * TDLS peer. 1283 */ 1284 1285 if (params->listen_interval >= 0) 1286 sta->listen_interval = params->listen_interval; 1287 1288 if (params->supported_rates) { 1289 rates = 0; 1290 1291 for (i = 0; i < params->supported_rates_len; i++) { 1292 int rate = (params->supported_rates[i] & 0x7f) * 5; 1293 for (j = 0; j < sband->n_bitrates; j++) { 1294 if (sband->bitrates[j].bitrate == rate) 1295 rates |= BIT(j); 1296 } 1297 } 1298 sta->sta.supp_rates[band] = rates; 1299 } 1300 1301 if (params->ht_capa) 1302 ieee80211_ht_cap_ie_to_sta_ht_cap(sdata, sband, 1303 params->ht_capa, sta); 1304 1305 if (params->vht_capa) 1306 ieee80211_vht_cap_ie_to_sta_vht_cap(sdata, sband, 1307 params->vht_capa, sta); 1308 1309 if (ieee80211_vif_is_mesh(&sdata->vif)) { 1310 #ifdef CONFIG_MAC80211_MESH 1311 u32 changed = 0; 1312 1313 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE) { 1314 switch (params->plink_state) { 1315 case NL80211_PLINK_ESTAB: 1316 if (sta->plink_state != NL80211_PLINK_ESTAB) 1317 changed = mesh_plink_inc_estab_count( 1318 sdata); 1319 sta->plink_state = params->plink_state; 1320 1321 ieee80211_mps_sta_status_update(sta); 1322 changed |= ieee80211_mps_set_sta_local_pm(sta, 1323 sdata->u.mesh.mshcfg.power_mode); 1324 break; 1325 case NL80211_PLINK_LISTEN: 1326 case NL80211_PLINK_BLOCKED: 1327 case NL80211_PLINK_OPN_SNT: 1328 case NL80211_PLINK_OPN_RCVD: 1329 case NL80211_PLINK_CNF_RCVD: 1330 case NL80211_PLINK_HOLDING: 1331 if (sta->plink_state == NL80211_PLINK_ESTAB) 1332 changed = mesh_plink_dec_estab_count( 1333 sdata); 1334 sta->plink_state = params->plink_state; 1335 1336 ieee80211_mps_sta_status_update(sta); 1337 changed |= 1338 ieee80211_mps_local_status_update(sdata); 1339 break; 1340 default: 1341 /* nothing */ 1342 break; 1343 } 1344 } 1345 1346 switch (params->plink_action) { 1347 case NL80211_PLINK_ACTION_NO_ACTION: 1348 /* nothing */ 1349 break; 1350 case NL80211_PLINK_ACTION_OPEN: 1351 changed |= mesh_plink_open(sta); 1352 break; 1353 case NL80211_PLINK_ACTION_BLOCK: 1354 changed |= mesh_plink_block(sta); 1355 break; 1356 } 1357 1358 if (params->local_pm) 1359 changed |= 1360 ieee80211_mps_set_sta_local_pm(sta, 1361 params->local_pm); 1362 ieee80211_bss_info_change_notify(sdata, changed); 1363 #endif 1364 } 1365 1366 return 0; 1367 } 1368 1369 static int ieee80211_add_station(struct wiphy *wiphy, struct net_device *dev, 1370 u8 *mac, struct station_parameters *params) 1371 { 1372 struct ieee80211_local *local = wiphy_priv(wiphy); 1373 struct sta_info *sta; 1374 struct ieee80211_sub_if_data *sdata; 1375 int err; 1376 int layer2_update; 1377 1378 if (params->vlan) { 1379 sdata = IEEE80211_DEV_TO_SUB_IF(params->vlan); 1380 1381 if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN && 1382 sdata->vif.type != NL80211_IFTYPE_AP) 1383 return -EINVAL; 1384 } else 1385 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1386 1387 if (ether_addr_equal(mac, sdata->vif.addr)) 1388 return -EINVAL; 1389 1390 if (is_multicast_ether_addr(mac)) 1391 return -EINVAL; 1392 1393 sta = sta_info_alloc(sdata, mac, GFP_KERNEL); 1394 if (!sta) 1395 return -ENOMEM; 1396 1397 /* 1398 * defaults -- if userspace wants something else we'll 1399 * change it accordingly in sta_apply_parameters() 1400 */ 1401 if (!(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))) { 1402 sta_info_pre_move_state(sta, IEEE80211_STA_AUTH); 1403 sta_info_pre_move_state(sta, IEEE80211_STA_ASSOC); 1404 } 1405 1406 err = sta_apply_parameters(local, sta, params); 1407 if (err) { 1408 sta_info_free(local, sta); 1409 return err; 1410 } 1411 1412 /* 1413 * for TDLS, rate control should be initialized only when 1414 * rates are known and station is marked authorized 1415 */ 1416 if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER)) 1417 rate_control_rate_init(sta); 1418 1419 layer2_update = sdata->vif.type == NL80211_IFTYPE_AP_VLAN || 1420 sdata->vif.type == NL80211_IFTYPE_AP; 1421 1422 err = sta_info_insert_rcu(sta); 1423 if (err) { 1424 rcu_read_unlock(); 1425 return err; 1426 } 1427 1428 if (layer2_update) 1429 ieee80211_send_layer2_update(sta); 1430 1431 rcu_read_unlock(); 1432 1433 return 0; 1434 } 1435 1436 static int ieee80211_del_station(struct wiphy *wiphy, struct net_device *dev, 1437 u8 *mac) 1438 { 1439 struct ieee80211_sub_if_data *sdata; 1440 1441 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1442 1443 if (mac) 1444 return sta_info_destroy_addr_bss(sdata, mac); 1445 1446 sta_info_flush(sdata); 1447 return 0; 1448 } 1449 1450 static int ieee80211_change_station(struct wiphy *wiphy, 1451 struct net_device *dev, u8 *mac, 1452 struct station_parameters *params) 1453 { 1454 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1455 struct ieee80211_local *local = wiphy_priv(wiphy); 1456 struct sta_info *sta; 1457 struct ieee80211_sub_if_data *vlansdata; 1458 enum cfg80211_station_type statype; 1459 int err; 1460 1461 mutex_lock(&local->sta_mtx); 1462 1463 sta = sta_info_get_bss(sdata, mac); 1464 if (!sta) { 1465 err = -ENOENT; 1466 goto out_err; 1467 } 1468 1469 switch (sdata->vif.type) { 1470 case NL80211_IFTYPE_MESH_POINT: 1471 if (sdata->u.mesh.user_mpm) 1472 statype = CFG80211_STA_MESH_PEER_USER; 1473 else 1474 statype = CFG80211_STA_MESH_PEER_KERNEL; 1475 break; 1476 case NL80211_IFTYPE_ADHOC: 1477 statype = CFG80211_STA_IBSS; 1478 break; 1479 case NL80211_IFTYPE_STATION: 1480 if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER)) { 1481 statype = CFG80211_STA_AP_STA; 1482 break; 1483 } 1484 if (test_sta_flag(sta, WLAN_STA_AUTHORIZED)) 1485 statype = CFG80211_STA_TDLS_PEER_ACTIVE; 1486 else 1487 statype = CFG80211_STA_TDLS_PEER_SETUP; 1488 break; 1489 case NL80211_IFTYPE_AP: 1490 case NL80211_IFTYPE_AP_VLAN: 1491 statype = CFG80211_STA_AP_CLIENT; 1492 break; 1493 default: 1494 err = -EOPNOTSUPP; 1495 goto out_err; 1496 } 1497 1498 err = cfg80211_check_station_change(wiphy, params, statype); 1499 if (err) 1500 goto out_err; 1501 1502 if (params->vlan && params->vlan != sta->sdata->dev) { 1503 bool prev_4addr = false; 1504 bool new_4addr = false; 1505 1506 vlansdata = IEEE80211_DEV_TO_SUB_IF(params->vlan); 1507 1508 if (params->vlan->ieee80211_ptr->use_4addr) { 1509 if (vlansdata->u.vlan.sta) { 1510 err = -EBUSY; 1511 goto out_err; 1512 } 1513 1514 rcu_assign_pointer(vlansdata->u.vlan.sta, sta); 1515 new_4addr = true; 1516 } 1517 1518 if (sta->sdata->vif.type == NL80211_IFTYPE_AP_VLAN && 1519 sta->sdata->u.vlan.sta) { 1520 rcu_assign_pointer(sta->sdata->u.vlan.sta, NULL); 1521 prev_4addr = true; 1522 } 1523 1524 sta->sdata = vlansdata; 1525 1526 if (sta->sta_state == IEEE80211_STA_AUTHORIZED && 1527 prev_4addr != new_4addr) { 1528 if (new_4addr) 1529 atomic_dec(&sta->sdata->bss->num_mcast_sta); 1530 else 1531 atomic_inc(&sta->sdata->bss->num_mcast_sta); 1532 } 1533 1534 ieee80211_send_layer2_update(sta); 1535 } 1536 1537 err = sta_apply_parameters(local, sta, params); 1538 if (err) 1539 goto out_err; 1540 1541 /* When peer becomes authorized, init rate control as well */ 1542 if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) && 1543 test_sta_flag(sta, WLAN_STA_AUTHORIZED)) 1544 rate_control_rate_init(sta); 1545 1546 mutex_unlock(&local->sta_mtx); 1547 1548 if (sdata->vif.type == NL80211_IFTYPE_STATION && 1549 params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) { 1550 ieee80211_recalc_ps(local, -1); 1551 ieee80211_recalc_ps_vif(sdata); 1552 } 1553 1554 return 0; 1555 out_err: 1556 mutex_unlock(&local->sta_mtx); 1557 return err; 1558 } 1559 1560 #ifdef CONFIG_MAC80211_MESH 1561 static int ieee80211_add_mpath(struct wiphy *wiphy, struct net_device *dev, 1562 u8 *dst, u8 *next_hop) 1563 { 1564 struct ieee80211_sub_if_data *sdata; 1565 struct mesh_path *mpath; 1566 struct sta_info *sta; 1567 1568 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1569 1570 rcu_read_lock(); 1571 sta = sta_info_get(sdata, next_hop); 1572 if (!sta) { 1573 rcu_read_unlock(); 1574 return -ENOENT; 1575 } 1576 1577 mpath = mesh_path_add(sdata, dst); 1578 if (IS_ERR(mpath)) { 1579 rcu_read_unlock(); 1580 return PTR_ERR(mpath); 1581 } 1582 1583 mesh_path_fix_nexthop(mpath, sta); 1584 1585 rcu_read_unlock(); 1586 return 0; 1587 } 1588 1589 static int ieee80211_del_mpath(struct wiphy *wiphy, struct net_device *dev, 1590 u8 *dst) 1591 { 1592 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1593 1594 if (dst) 1595 return mesh_path_del(sdata, dst); 1596 1597 mesh_path_flush_by_iface(sdata); 1598 return 0; 1599 } 1600 1601 static int ieee80211_change_mpath(struct wiphy *wiphy, 1602 struct net_device *dev, 1603 u8 *dst, u8 *next_hop) 1604 { 1605 struct ieee80211_sub_if_data *sdata; 1606 struct mesh_path *mpath; 1607 struct sta_info *sta; 1608 1609 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1610 1611 rcu_read_lock(); 1612 1613 sta = sta_info_get(sdata, next_hop); 1614 if (!sta) { 1615 rcu_read_unlock(); 1616 return -ENOENT; 1617 } 1618 1619 mpath = mesh_path_lookup(sdata, dst); 1620 if (!mpath) { 1621 rcu_read_unlock(); 1622 return -ENOENT; 1623 } 1624 1625 mesh_path_fix_nexthop(mpath, sta); 1626 1627 rcu_read_unlock(); 1628 return 0; 1629 } 1630 1631 static void mpath_set_pinfo(struct mesh_path *mpath, u8 *next_hop, 1632 struct mpath_info *pinfo) 1633 { 1634 struct sta_info *next_hop_sta = rcu_dereference(mpath->next_hop); 1635 1636 if (next_hop_sta) 1637 memcpy(next_hop, next_hop_sta->sta.addr, ETH_ALEN); 1638 else 1639 memset(next_hop, 0, ETH_ALEN); 1640 1641 memset(pinfo, 0, sizeof(*pinfo)); 1642 1643 pinfo->generation = mesh_paths_generation; 1644 1645 pinfo->filled = MPATH_INFO_FRAME_QLEN | 1646 MPATH_INFO_SN | 1647 MPATH_INFO_METRIC | 1648 MPATH_INFO_EXPTIME | 1649 MPATH_INFO_DISCOVERY_TIMEOUT | 1650 MPATH_INFO_DISCOVERY_RETRIES | 1651 MPATH_INFO_FLAGS; 1652 1653 pinfo->frame_qlen = mpath->frame_queue.qlen; 1654 pinfo->sn = mpath->sn; 1655 pinfo->metric = mpath->metric; 1656 if (time_before(jiffies, mpath->exp_time)) 1657 pinfo->exptime = jiffies_to_msecs(mpath->exp_time - jiffies); 1658 pinfo->discovery_timeout = 1659 jiffies_to_msecs(mpath->discovery_timeout); 1660 pinfo->discovery_retries = mpath->discovery_retries; 1661 if (mpath->flags & MESH_PATH_ACTIVE) 1662 pinfo->flags |= NL80211_MPATH_FLAG_ACTIVE; 1663 if (mpath->flags & MESH_PATH_RESOLVING) 1664 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING; 1665 if (mpath->flags & MESH_PATH_SN_VALID) 1666 pinfo->flags |= NL80211_MPATH_FLAG_SN_VALID; 1667 if (mpath->flags & MESH_PATH_FIXED) 1668 pinfo->flags |= NL80211_MPATH_FLAG_FIXED; 1669 if (mpath->flags & MESH_PATH_RESOLVED) 1670 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVED; 1671 } 1672 1673 static int ieee80211_get_mpath(struct wiphy *wiphy, struct net_device *dev, 1674 u8 *dst, u8 *next_hop, struct mpath_info *pinfo) 1675 1676 { 1677 struct ieee80211_sub_if_data *sdata; 1678 struct mesh_path *mpath; 1679 1680 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1681 1682 rcu_read_lock(); 1683 mpath = mesh_path_lookup(sdata, dst); 1684 if (!mpath) { 1685 rcu_read_unlock(); 1686 return -ENOENT; 1687 } 1688 memcpy(dst, mpath->dst, ETH_ALEN); 1689 mpath_set_pinfo(mpath, next_hop, pinfo); 1690 rcu_read_unlock(); 1691 return 0; 1692 } 1693 1694 static int ieee80211_dump_mpath(struct wiphy *wiphy, struct net_device *dev, 1695 int idx, u8 *dst, u8 *next_hop, 1696 struct mpath_info *pinfo) 1697 { 1698 struct ieee80211_sub_if_data *sdata; 1699 struct mesh_path *mpath; 1700 1701 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1702 1703 rcu_read_lock(); 1704 mpath = mesh_path_lookup_by_idx(sdata, idx); 1705 if (!mpath) { 1706 rcu_read_unlock(); 1707 return -ENOENT; 1708 } 1709 memcpy(dst, mpath->dst, ETH_ALEN); 1710 mpath_set_pinfo(mpath, next_hop, pinfo); 1711 rcu_read_unlock(); 1712 return 0; 1713 } 1714 1715 static int ieee80211_get_mesh_config(struct wiphy *wiphy, 1716 struct net_device *dev, 1717 struct mesh_config *conf) 1718 { 1719 struct ieee80211_sub_if_data *sdata; 1720 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1721 1722 memcpy(conf, &(sdata->u.mesh.mshcfg), sizeof(struct mesh_config)); 1723 return 0; 1724 } 1725 1726 static inline bool _chg_mesh_attr(enum nl80211_meshconf_params parm, u32 mask) 1727 { 1728 return (mask >> (parm-1)) & 0x1; 1729 } 1730 1731 static int copy_mesh_setup(struct ieee80211_if_mesh *ifmsh, 1732 const struct mesh_setup *setup) 1733 { 1734 u8 *new_ie; 1735 const u8 *old_ie; 1736 struct ieee80211_sub_if_data *sdata = container_of(ifmsh, 1737 struct ieee80211_sub_if_data, u.mesh); 1738 1739 /* allocate information elements */ 1740 new_ie = NULL; 1741 old_ie = ifmsh->ie; 1742 1743 if (setup->ie_len) { 1744 new_ie = kmemdup(setup->ie, setup->ie_len, 1745 GFP_KERNEL); 1746 if (!new_ie) 1747 return -ENOMEM; 1748 } 1749 ifmsh->ie_len = setup->ie_len; 1750 ifmsh->ie = new_ie; 1751 kfree(old_ie); 1752 1753 /* now copy the rest of the setup parameters */ 1754 ifmsh->mesh_id_len = setup->mesh_id_len; 1755 memcpy(ifmsh->mesh_id, setup->mesh_id, ifmsh->mesh_id_len); 1756 ifmsh->mesh_sp_id = setup->sync_method; 1757 ifmsh->mesh_pp_id = setup->path_sel_proto; 1758 ifmsh->mesh_pm_id = setup->path_metric; 1759 ifmsh->user_mpm = setup->user_mpm; 1760 ifmsh->mesh_auth_id = setup->auth_id; 1761 ifmsh->security = IEEE80211_MESH_SEC_NONE; 1762 if (setup->is_authenticated) 1763 ifmsh->security |= IEEE80211_MESH_SEC_AUTHED; 1764 if (setup->is_secure) 1765 ifmsh->security |= IEEE80211_MESH_SEC_SECURED; 1766 1767 /* mcast rate setting in Mesh Node */ 1768 memcpy(sdata->vif.bss_conf.mcast_rate, setup->mcast_rate, 1769 sizeof(setup->mcast_rate)); 1770 sdata->vif.bss_conf.basic_rates = setup->basic_rates; 1771 1772 sdata->vif.bss_conf.beacon_int = setup->beacon_interval; 1773 sdata->vif.bss_conf.dtim_period = setup->dtim_period; 1774 1775 return 0; 1776 } 1777 1778 static int ieee80211_update_mesh_config(struct wiphy *wiphy, 1779 struct net_device *dev, u32 mask, 1780 const struct mesh_config *nconf) 1781 { 1782 struct mesh_config *conf; 1783 struct ieee80211_sub_if_data *sdata; 1784 struct ieee80211_if_mesh *ifmsh; 1785 1786 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1787 ifmsh = &sdata->u.mesh; 1788 1789 /* Set the config options which we are interested in setting */ 1790 conf = &(sdata->u.mesh.mshcfg); 1791 if (_chg_mesh_attr(NL80211_MESHCONF_RETRY_TIMEOUT, mask)) 1792 conf->dot11MeshRetryTimeout = nconf->dot11MeshRetryTimeout; 1793 if (_chg_mesh_attr(NL80211_MESHCONF_CONFIRM_TIMEOUT, mask)) 1794 conf->dot11MeshConfirmTimeout = nconf->dot11MeshConfirmTimeout; 1795 if (_chg_mesh_attr(NL80211_MESHCONF_HOLDING_TIMEOUT, mask)) 1796 conf->dot11MeshHoldingTimeout = nconf->dot11MeshHoldingTimeout; 1797 if (_chg_mesh_attr(NL80211_MESHCONF_MAX_PEER_LINKS, mask)) 1798 conf->dot11MeshMaxPeerLinks = nconf->dot11MeshMaxPeerLinks; 1799 if (_chg_mesh_attr(NL80211_MESHCONF_MAX_RETRIES, mask)) 1800 conf->dot11MeshMaxRetries = nconf->dot11MeshMaxRetries; 1801 if (_chg_mesh_attr(NL80211_MESHCONF_TTL, mask)) 1802 conf->dot11MeshTTL = nconf->dot11MeshTTL; 1803 if (_chg_mesh_attr(NL80211_MESHCONF_ELEMENT_TTL, mask)) 1804 conf->element_ttl = nconf->element_ttl; 1805 if (_chg_mesh_attr(NL80211_MESHCONF_AUTO_OPEN_PLINKS, mask)) { 1806 if (ifmsh->user_mpm) 1807 return -EBUSY; 1808 conf->auto_open_plinks = nconf->auto_open_plinks; 1809 } 1810 if (_chg_mesh_attr(NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR, mask)) 1811 conf->dot11MeshNbrOffsetMaxNeighbor = 1812 nconf->dot11MeshNbrOffsetMaxNeighbor; 1813 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES, mask)) 1814 conf->dot11MeshHWMPmaxPREQretries = 1815 nconf->dot11MeshHWMPmaxPREQretries; 1816 if (_chg_mesh_attr(NL80211_MESHCONF_PATH_REFRESH_TIME, mask)) 1817 conf->path_refresh_time = nconf->path_refresh_time; 1818 if (_chg_mesh_attr(NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT, mask)) 1819 conf->min_discovery_timeout = nconf->min_discovery_timeout; 1820 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT, mask)) 1821 conf->dot11MeshHWMPactivePathTimeout = 1822 nconf->dot11MeshHWMPactivePathTimeout; 1823 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL, mask)) 1824 conf->dot11MeshHWMPpreqMinInterval = 1825 nconf->dot11MeshHWMPpreqMinInterval; 1826 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL, mask)) 1827 conf->dot11MeshHWMPperrMinInterval = 1828 nconf->dot11MeshHWMPperrMinInterval; 1829 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME, 1830 mask)) 1831 conf->dot11MeshHWMPnetDiameterTraversalTime = 1832 nconf->dot11MeshHWMPnetDiameterTraversalTime; 1833 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOTMODE, mask)) { 1834 conf->dot11MeshHWMPRootMode = nconf->dot11MeshHWMPRootMode; 1835 ieee80211_mesh_root_setup(ifmsh); 1836 } 1837 if (_chg_mesh_attr(NL80211_MESHCONF_GATE_ANNOUNCEMENTS, mask)) { 1838 /* our current gate announcement implementation rides on root 1839 * announcements, so require this ifmsh to also be a root node 1840 * */ 1841 if (nconf->dot11MeshGateAnnouncementProtocol && 1842 !(conf->dot11MeshHWMPRootMode > IEEE80211_ROOTMODE_ROOT)) { 1843 conf->dot11MeshHWMPRootMode = IEEE80211_PROACTIVE_RANN; 1844 ieee80211_mesh_root_setup(ifmsh); 1845 } 1846 conf->dot11MeshGateAnnouncementProtocol = 1847 nconf->dot11MeshGateAnnouncementProtocol; 1848 } 1849 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_RANN_INTERVAL, mask)) 1850 conf->dot11MeshHWMPRannInterval = 1851 nconf->dot11MeshHWMPRannInterval; 1852 if (_chg_mesh_attr(NL80211_MESHCONF_FORWARDING, mask)) 1853 conf->dot11MeshForwarding = nconf->dot11MeshForwarding; 1854 if (_chg_mesh_attr(NL80211_MESHCONF_RSSI_THRESHOLD, mask)) { 1855 /* our RSSI threshold implementation is supported only for 1856 * devices that report signal in dBm. 1857 */ 1858 if (!(sdata->local->hw.flags & IEEE80211_HW_SIGNAL_DBM)) 1859 return -ENOTSUPP; 1860 conf->rssi_threshold = nconf->rssi_threshold; 1861 } 1862 if (_chg_mesh_attr(NL80211_MESHCONF_HT_OPMODE, mask)) { 1863 conf->ht_opmode = nconf->ht_opmode; 1864 sdata->vif.bss_conf.ht_operation_mode = nconf->ht_opmode; 1865 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_HT); 1866 } 1867 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT, mask)) 1868 conf->dot11MeshHWMPactivePathToRootTimeout = 1869 nconf->dot11MeshHWMPactivePathToRootTimeout; 1870 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOT_INTERVAL, mask)) 1871 conf->dot11MeshHWMProotInterval = 1872 nconf->dot11MeshHWMProotInterval; 1873 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL, mask)) 1874 conf->dot11MeshHWMPconfirmationInterval = 1875 nconf->dot11MeshHWMPconfirmationInterval; 1876 if (_chg_mesh_attr(NL80211_MESHCONF_POWER_MODE, mask)) { 1877 conf->power_mode = nconf->power_mode; 1878 ieee80211_mps_local_status_update(sdata); 1879 } 1880 if (_chg_mesh_attr(NL80211_MESHCONF_AWAKE_WINDOW, mask)) 1881 conf->dot11MeshAwakeWindowDuration = 1882 nconf->dot11MeshAwakeWindowDuration; 1883 if (_chg_mesh_attr(NL80211_MESHCONF_PLINK_TIMEOUT, mask)) 1884 conf->plink_timeout = nconf->plink_timeout; 1885 ieee80211_mbss_info_change_notify(sdata, BSS_CHANGED_BEACON); 1886 return 0; 1887 } 1888 1889 static int ieee80211_join_mesh(struct wiphy *wiphy, struct net_device *dev, 1890 const struct mesh_config *conf, 1891 const struct mesh_setup *setup) 1892 { 1893 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1894 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh; 1895 int err; 1896 1897 memcpy(&ifmsh->mshcfg, conf, sizeof(struct mesh_config)); 1898 err = copy_mesh_setup(ifmsh, setup); 1899 if (err) 1900 return err; 1901 1902 /* can mesh use other SMPS modes? */ 1903 sdata->smps_mode = IEEE80211_SMPS_OFF; 1904 sdata->needed_rx_chains = sdata->local->rx_chains; 1905 1906 err = ieee80211_vif_use_channel(sdata, &setup->chandef, 1907 IEEE80211_CHANCTX_SHARED); 1908 if (err) 1909 return err; 1910 1911 return ieee80211_start_mesh(sdata); 1912 } 1913 1914 static int ieee80211_leave_mesh(struct wiphy *wiphy, struct net_device *dev) 1915 { 1916 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1917 1918 ieee80211_stop_mesh(sdata); 1919 ieee80211_vif_release_channel(sdata); 1920 1921 return 0; 1922 } 1923 #endif 1924 1925 static int ieee80211_change_bss(struct wiphy *wiphy, 1926 struct net_device *dev, 1927 struct bss_parameters *params) 1928 { 1929 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1930 enum ieee80211_band band; 1931 u32 changed = 0; 1932 1933 if (!rtnl_dereference(sdata->u.ap.beacon)) 1934 return -ENOENT; 1935 1936 band = ieee80211_get_sdata_band(sdata); 1937 1938 if (params->use_cts_prot >= 0) { 1939 sdata->vif.bss_conf.use_cts_prot = params->use_cts_prot; 1940 changed |= BSS_CHANGED_ERP_CTS_PROT; 1941 } 1942 if (params->use_short_preamble >= 0) { 1943 sdata->vif.bss_conf.use_short_preamble = 1944 params->use_short_preamble; 1945 changed |= BSS_CHANGED_ERP_PREAMBLE; 1946 } 1947 1948 if (!sdata->vif.bss_conf.use_short_slot && 1949 band == IEEE80211_BAND_5GHZ) { 1950 sdata->vif.bss_conf.use_short_slot = true; 1951 changed |= BSS_CHANGED_ERP_SLOT; 1952 } 1953 1954 if (params->use_short_slot_time >= 0) { 1955 sdata->vif.bss_conf.use_short_slot = 1956 params->use_short_slot_time; 1957 changed |= BSS_CHANGED_ERP_SLOT; 1958 } 1959 1960 if (params->basic_rates) { 1961 int i, j; 1962 u32 rates = 0; 1963 struct ieee80211_supported_band *sband = wiphy->bands[band]; 1964 1965 for (i = 0; i < params->basic_rates_len; i++) { 1966 int rate = (params->basic_rates[i] & 0x7f) * 5; 1967 for (j = 0; j < sband->n_bitrates; j++) { 1968 if (sband->bitrates[j].bitrate == rate) 1969 rates |= BIT(j); 1970 } 1971 } 1972 sdata->vif.bss_conf.basic_rates = rates; 1973 changed |= BSS_CHANGED_BASIC_RATES; 1974 } 1975 1976 if (params->ap_isolate >= 0) { 1977 if (params->ap_isolate) 1978 sdata->flags |= IEEE80211_SDATA_DONT_BRIDGE_PACKETS; 1979 else 1980 sdata->flags &= ~IEEE80211_SDATA_DONT_BRIDGE_PACKETS; 1981 } 1982 1983 if (params->ht_opmode >= 0) { 1984 sdata->vif.bss_conf.ht_operation_mode = 1985 (u16) params->ht_opmode; 1986 changed |= BSS_CHANGED_HT; 1987 } 1988 1989 if (params->p2p_ctwindow >= 0) { 1990 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow &= 1991 ~IEEE80211_P2P_OPPPS_CTWINDOW_MASK; 1992 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |= 1993 params->p2p_ctwindow & IEEE80211_P2P_OPPPS_CTWINDOW_MASK; 1994 changed |= BSS_CHANGED_P2P_PS; 1995 } 1996 1997 if (params->p2p_opp_ps > 0) { 1998 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |= 1999 IEEE80211_P2P_OPPPS_ENABLE_BIT; 2000 changed |= BSS_CHANGED_P2P_PS; 2001 } else if (params->p2p_opp_ps == 0) { 2002 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow &= 2003 ~IEEE80211_P2P_OPPPS_ENABLE_BIT; 2004 changed |= BSS_CHANGED_P2P_PS; 2005 } 2006 2007 ieee80211_bss_info_change_notify(sdata, changed); 2008 2009 return 0; 2010 } 2011 2012 static int ieee80211_set_txq_params(struct wiphy *wiphy, 2013 struct net_device *dev, 2014 struct ieee80211_txq_params *params) 2015 { 2016 struct ieee80211_local *local = wiphy_priv(wiphy); 2017 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2018 struct ieee80211_tx_queue_params p; 2019 2020 if (!local->ops->conf_tx) 2021 return -EOPNOTSUPP; 2022 2023 if (local->hw.queues < IEEE80211_NUM_ACS) 2024 return -EOPNOTSUPP; 2025 2026 memset(&p, 0, sizeof(p)); 2027 p.aifs = params->aifs; 2028 p.cw_max = params->cwmax; 2029 p.cw_min = params->cwmin; 2030 p.txop = params->txop; 2031 2032 /* 2033 * Setting tx queue params disables u-apsd because it's only 2034 * called in master mode. 2035 */ 2036 p.uapsd = false; 2037 2038 sdata->tx_conf[params->ac] = p; 2039 if (drv_conf_tx(local, sdata, params->ac, &p)) { 2040 wiphy_debug(local->hw.wiphy, 2041 "failed to set TX queue parameters for AC %d\n", 2042 params->ac); 2043 return -EINVAL; 2044 } 2045 2046 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_QOS); 2047 2048 return 0; 2049 } 2050 2051 #ifdef CONFIG_PM 2052 static int ieee80211_suspend(struct wiphy *wiphy, 2053 struct cfg80211_wowlan *wowlan) 2054 { 2055 return __ieee80211_suspend(wiphy_priv(wiphy), wowlan); 2056 } 2057 2058 static int ieee80211_resume(struct wiphy *wiphy) 2059 { 2060 return __ieee80211_resume(wiphy_priv(wiphy)); 2061 } 2062 #else 2063 #define ieee80211_suspend NULL 2064 #define ieee80211_resume NULL 2065 #endif 2066 2067 static int ieee80211_scan(struct wiphy *wiphy, 2068 struct cfg80211_scan_request *req) 2069 { 2070 struct ieee80211_sub_if_data *sdata; 2071 2072 sdata = IEEE80211_WDEV_TO_SUB_IF(req->wdev); 2073 2074 switch (ieee80211_vif_type_p2p(&sdata->vif)) { 2075 case NL80211_IFTYPE_STATION: 2076 case NL80211_IFTYPE_ADHOC: 2077 case NL80211_IFTYPE_MESH_POINT: 2078 case NL80211_IFTYPE_P2P_CLIENT: 2079 case NL80211_IFTYPE_P2P_DEVICE: 2080 break; 2081 case NL80211_IFTYPE_P2P_GO: 2082 if (sdata->local->ops->hw_scan) 2083 break; 2084 /* 2085 * FIXME: implement NoA while scanning in software, 2086 * for now fall through to allow scanning only when 2087 * beaconing hasn't been configured yet 2088 */ 2089 case NL80211_IFTYPE_AP: 2090 /* 2091 * If the scan has been forced (and the driver supports 2092 * forcing), don't care about being beaconing already. 2093 * This will create problems to the attached stations (e.g. all 2094 * the frames sent while scanning on other channel will be 2095 * lost) 2096 */ 2097 if (sdata->u.ap.beacon && 2098 (!(wiphy->features & NL80211_FEATURE_AP_SCAN) || 2099 !(req->flags & NL80211_SCAN_FLAG_AP))) 2100 return -EOPNOTSUPP; 2101 break; 2102 default: 2103 return -EOPNOTSUPP; 2104 } 2105 2106 return ieee80211_request_scan(sdata, req); 2107 } 2108 2109 static int 2110 ieee80211_sched_scan_start(struct wiphy *wiphy, 2111 struct net_device *dev, 2112 struct cfg80211_sched_scan_request *req) 2113 { 2114 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2115 2116 if (!sdata->local->ops->sched_scan_start) 2117 return -EOPNOTSUPP; 2118 2119 return ieee80211_request_sched_scan_start(sdata, req); 2120 } 2121 2122 static int 2123 ieee80211_sched_scan_stop(struct wiphy *wiphy, struct net_device *dev) 2124 { 2125 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2126 2127 if (!sdata->local->ops->sched_scan_stop) 2128 return -EOPNOTSUPP; 2129 2130 return ieee80211_request_sched_scan_stop(sdata); 2131 } 2132 2133 static int ieee80211_auth(struct wiphy *wiphy, struct net_device *dev, 2134 struct cfg80211_auth_request *req) 2135 { 2136 return ieee80211_mgd_auth(IEEE80211_DEV_TO_SUB_IF(dev), req); 2137 } 2138 2139 static int ieee80211_assoc(struct wiphy *wiphy, struct net_device *dev, 2140 struct cfg80211_assoc_request *req) 2141 { 2142 return ieee80211_mgd_assoc(IEEE80211_DEV_TO_SUB_IF(dev), req); 2143 } 2144 2145 static int ieee80211_deauth(struct wiphy *wiphy, struct net_device *dev, 2146 struct cfg80211_deauth_request *req) 2147 { 2148 return ieee80211_mgd_deauth(IEEE80211_DEV_TO_SUB_IF(dev), req); 2149 } 2150 2151 static int ieee80211_disassoc(struct wiphy *wiphy, struct net_device *dev, 2152 struct cfg80211_disassoc_request *req) 2153 { 2154 return ieee80211_mgd_disassoc(IEEE80211_DEV_TO_SUB_IF(dev), req); 2155 } 2156 2157 static int ieee80211_join_ibss(struct wiphy *wiphy, struct net_device *dev, 2158 struct cfg80211_ibss_params *params) 2159 { 2160 return ieee80211_ibss_join(IEEE80211_DEV_TO_SUB_IF(dev), params); 2161 } 2162 2163 static int ieee80211_leave_ibss(struct wiphy *wiphy, struct net_device *dev) 2164 { 2165 return ieee80211_ibss_leave(IEEE80211_DEV_TO_SUB_IF(dev)); 2166 } 2167 2168 static int ieee80211_set_mcast_rate(struct wiphy *wiphy, struct net_device *dev, 2169 int rate[IEEE80211_NUM_BANDS]) 2170 { 2171 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2172 2173 memcpy(sdata->vif.bss_conf.mcast_rate, rate, 2174 sizeof(int) * IEEE80211_NUM_BANDS); 2175 2176 return 0; 2177 } 2178 2179 static int ieee80211_set_wiphy_params(struct wiphy *wiphy, u32 changed) 2180 { 2181 struct ieee80211_local *local = wiphy_priv(wiphy); 2182 int err; 2183 2184 if (changed & WIPHY_PARAM_FRAG_THRESHOLD) { 2185 err = drv_set_frag_threshold(local, wiphy->frag_threshold); 2186 2187 if (err) 2188 return err; 2189 } 2190 2191 if (changed & WIPHY_PARAM_COVERAGE_CLASS) { 2192 err = drv_set_coverage_class(local, wiphy->coverage_class); 2193 2194 if (err) 2195 return err; 2196 } 2197 2198 if (changed & WIPHY_PARAM_RTS_THRESHOLD) { 2199 err = drv_set_rts_threshold(local, wiphy->rts_threshold); 2200 2201 if (err) 2202 return err; 2203 } 2204 2205 if (changed & WIPHY_PARAM_RETRY_SHORT) { 2206 if (wiphy->retry_short > IEEE80211_MAX_TX_RETRY) 2207 return -EINVAL; 2208 local->hw.conf.short_frame_max_tx_count = wiphy->retry_short; 2209 } 2210 if (changed & WIPHY_PARAM_RETRY_LONG) { 2211 if (wiphy->retry_long > IEEE80211_MAX_TX_RETRY) 2212 return -EINVAL; 2213 local->hw.conf.long_frame_max_tx_count = wiphy->retry_long; 2214 } 2215 if (changed & 2216 (WIPHY_PARAM_RETRY_SHORT | WIPHY_PARAM_RETRY_LONG)) 2217 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_RETRY_LIMITS); 2218 2219 return 0; 2220 } 2221 2222 static int ieee80211_set_tx_power(struct wiphy *wiphy, 2223 struct wireless_dev *wdev, 2224 enum nl80211_tx_power_setting type, int mbm) 2225 { 2226 struct ieee80211_local *local = wiphy_priv(wiphy); 2227 struct ieee80211_sub_if_data *sdata; 2228 2229 if (wdev) { 2230 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 2231 2232 switch (type) { 2233 case NL80211_TX_POWER_AUTOMATIC: 2234 sdata->user_power_level = IEEE80211_UNSET_POWER_LEVEL; 2235 break; 2236 case NL80211_TX_POWER_LIMITED: 2237 case NL80211_TX_POWER_FIXED: 2238 if (mbm < 0 || (mbm % 100)) 2239 return -EOPNOTSUPP; 2240 sdata->user_power_level = MBM_TO_DBM(mbm); 2241 break; 2242 } 2243 2244 ieee80211_recalc_txpower(sdata); 2245 2246 return 0; 2247 } 2248 2249 switch (type) { 2250 case NL80211_TX_POWER_AUTOMATIC: 2251 local->user_power_level = IEEE80211_UNSET_POWER_LEVEL; 2252 break; 2253 case NL80211_TX_POWER_LIMITED: 2254 case NL80211_TX_POWER_FIXED: 2255 if (mbm < 0 || (mbm % 100)) 2256 return -EOPNOTSUPP; 2257 local->user_power_level = MBM_TO_DBM(mbm); 2258 break; 2259 } 2260 2261 mutex_lock(&local->iflist_mtx); 2262 list_for_each_entry(sdata, &local->interfaces, list) 2263 sdata->user_power_level = local->user_power_level; 2264 list_for_each_entry(sdata, &local->interfaces, list) 2265 ieee80211_recalc_txpower(sdata); 2266 mutex_unlock(&local->iflist_mtx); 2267 2268 return 0; 2269 } 2270 2271 static int ieee80211_get_tx_power(struct wiphy *wiphy, 2272 struct wireless_dev *wdev, 2273 int *dbm) 2274 { 2275 struct ieee80211_local *local = wiphy_priv(wiphy); 2276 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 2277 2278 if (!local->use_chanctx) 2279 *dbm = local->hw.conf.power_level; 2280 else 2281 *dbm = sdata->vif.bss_conf.txpower; 2282 2283 return 0; 2284 } 2285 2286 static int ieee80211_set_wds_peer(struct wiphy *wiphy, struct net_device *dev, 2287 const u8 *addr) 2288 { 2289 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2290 2291 memcpy(&sdata->u.wds.remote_addr, addr, ETH_ALEN); 2292 2293 return 0; 2294 } 2295 2296 static void ieee80211_rfkill_poll(struct wiphy *wiphy) 2297 { 2298 struct ieee80211_local *local = wiphy_priv(wiphy); 2299 2300 drv_rfkill_poll(local); 2301 } 2302 2303 #ifdef CONFIG_NL80211_TESTMODE 2304 static int ieee80211_testmode_cmd(struct wiphy *wiphy, void *data, int len) 2305 { 2306 struct ieee80211_local *local = wiphy_priv(wiphy); 2307 2308 if (!local->ops->testmode_cmd) 2309 return -EOPNOTSUPP; 2310 2311 return local->ops->testmode_cmd(&local->hw, data, len); 2312 } 2313 2314 static int ieee80211_testmode_dump(struct wiphy *wiphy, 2315 struct sk_buff *skb, 2316 struct netlink_callback *cb, 2317 void *data, int len) 2318 { 2319 struct ieee80211_local *local = wiphy_priv(wiphy); 2320 2321 if (!local->ops->testmode_dump) 2322 return -EOPNOTSUPP; 2323 2324 return local->ops->testmode_dump(&local->hw, skb, cb, data, len); 2325 } 2326 #endif 2327 2328 int __ieee80211_request_smps(struct ieee80211_sub_if_data *sdata, 2329 enum ieee80211_smps_mode smps_mode) 2330 { 2331 const u8 *ap; 2332 enum ieee80211_smps_mode old_req; 2333 int err; 2334 2335 lockdep_assert_held(&sdata->wdev.mtx); 2336 2337 old_req = sdata->u.mgd.req_smps; 2338 sdata->u.mgd.req_smps = smps_mode; 2339 2340 if (old_req == smps_mode && 2341 smps_mode != IEEE80211_SMPS_AUTOMATIC) 2342 return 0; 2343 2344 /* 2345 * If not associated, or current association is not an HT 2346 * association, there's no need to do anything, just store 2347 * the new value until we associate. 2348 */ 2349 if (!sdata->u.mgd.associated || 2350 sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_20_NOHT) 2351 return 0; 2352 2353 ap = sdata->u.mgd.associated->bssid; 2354 2355 if (smps_mode == IEEE80211_SMPS_AUTOMATIC) { 2356 if (sdata->u.mgd.powersave) 2357 smps_mode = IEEE80211_SMPS_DYNAMIC; 2358 else 2359 smps_mode = IEEE80211_SMPS_OFF; 2360 } 2361 2362 /* send SM PS frame to AP */ 2363 err = ieee80211_send_smps_action(sdata, smps_mode, 2364 ap, ap); 2365 if (err) 2366 sdata->u.mgd.req_smps = old_req; 2367 2368 return err; 2369 } 2370 2371 static int ieee80211_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev, 2372 bool enabled, int timeout) 2373 { 2374 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2375 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); 2376 2377 if (sdata->vif.type != NL80211_IFTYPE_STATION && 2378 sdata->vif.type != NL80211_IFTYPE_MESH_POINT) 2379 return -EOPNOTSUPP; 2380 2381 if (!(local->hw.flags & IEEE80211_HW_SUPPORTS_PS)) 2382 return -EOPNOTSUPP; 2383 2384 if (enabled == sdata->u.mgd.powersave && 2385 timeout == local->dynamic_ps_forced_timeout) 2386 return 0; 2387 2388 sdata->u.mgd.powersave = enabled; 2389 local->dynamic_ps_forced_timeout = timeout; 2390 2391 /* no change, but if automatic follow powersave */ 2392 sdata_lock(sdata); 2393 __ieee80211_request_smps(sdata, sdata->u.mgd.req_smps); 2394 sdata_unlock(sdata); 2395 2396 if (local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_PS) 2397 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS); 2398 2399 ieee80211_recalc_ps(local, -1); 2400 ieee80211_recalc_ps_vif(sdata); 2401 2402 return 0; 2403 } 2404 2405 static int ieee80211_set_cqm_rssi_config(struct wiphy *wiphy, 2406 struct net_device *dev, 2407 s32 rssi_thold, u32 rssi_hyst) 2408 { 2409 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2410 struct ieee80211_vif *vif = &sdata->vif; 2411 struct ieee80211_bss_conf *bss_conf = &vif->bss_conf; 2412 2413 if (rssi_thold == bss_conf->cqm_rssi_thold && 2414 rssi_hyst == bss_conf->cqm_rssi_hyst) 2415 return 0; 2416 2417 bss_conf->cqm_rssi_thold = rssi_thold; 2418 bss_conf->cqm_rssi_hyst = rssi_hyst; 2419 2420 /* tell the driver upon association, unless already associated */ 2421 if (sdata->u.mgd.associated && 2422 sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI) 2423 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_CQM); 2424 2425 return 0; 2426 } 2427 2428 static int ieee80211_set_bitrate_mask(struct wiphy *wiphy, 2429 struct net_device *dev, 2430 const u8 *addr, 2431 const struct cfg80211_bitrate_mask *mask) 2432 { 2433 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2434 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); 2435 int i, ret; 2436 2437 if (!ieee80211_sdata_running(sdata)) 2438 return -ENETDOWN; 2439 2440 if (local->hw.flags & IEEE80211_HW_HAS_RATE_CONTROL) { 2441 ret = drv_set_bitrate_mask(local, sdata, mask); 2442 if (ret) 2443 return ret; 2444 } 2445 2446 for (i = 0; i < IEEE80211_NUM_BANDS; i++) { 2447 struct ieee80211_supported_band *sband = wiphy->bands[i]; 2448 int j; 2449 2450 sdata->rc_rateidx_mask[i] = mask->control[i].legacy; 2451 memcpy(sdata->rc_rateidx_mcs_mask[i], mask->control[i].mcs, 2452 sizeof(mask->control[i].mcs)); 2453 2454 sdata->rc_has_mcs_mask[i] = false; 2455 if (!sband) 2456 continue; 2457 2458 for (j = 0; j < IEEE80211_HT_MCS_MASK_LEN; j++) 2459 if (~sdata->rc_rateidx_mcs_mask[i][j]) { 2460 sdata->rc_has_mcs_mask[i] = true; 2461 break; 2462 } 2463 } 2464 2465 return 0; 2466 } 2467 2468 static int ieee80211_start_roc_work(struct ieee80211_local *local, 2469 struct ieee80211_sub_if_data *sdata, 2470 struct ieee80211_channel *channel, 2471 unsigned int duration, u64 *cookie, 2472 struct sk_buff *txskb, 2473 enum ieee80211_roc_type type) 2474 { 2475 struct ieee80211_roc_work *roc, *tmp; 2476 bool queued = false; 2477 int ret; 2478 2479 lockdep_assert_held(&local->mtx); 2480 2481 if (local->use_chanctx && !local->ops->remain_on_channel) 2482 return -EOPNOTSUPP; 2483 2484 roc = kzalloc(sizeof(*roc), GFP_KERNEL); 2485 if (!roc) 2486 return -ENOMEM; 2487 2488 roc->chan = channel; 2489 roc->duration = duration; 2490 roc->req_duration = duration; 2491 roc->frame = txskb; 2492 roc->type = type; 2493 roc->mgmt_tx_cookie = (unsigned long)txskb; 2494 roc->sdata = sdata; 2495 INIT_DELAYED_WORK(&roc->work, ieee80211_sw_roc_work); 2496 INIT_LIST_HEAD(&roc->dependents); 2497 2498 /* if there's one pending or we're scanning, queue this one */ 2499 if (!list_empty(&local->roc_list) || 2500 local->scanning || local->radar_detect_enabled) 2501 goto out_check_combine; 2502 2503 /* if not HW assist, just queue & schedule work */ 2504 if (!local->ops->remain_on_channel) { 2505 ieee80211_queue_delayed_work(&local->hw, &roc->work, 0); 2506 goto out_queue; 2507 } 2508 2509 /* otherwise actually kick it off here (for error handling) */ 2510 2511 /* 2512 * If the duration is zero, then the driver 2513 * wouldn't actually do anything. Set it to 2514 * 10 for now. 2515 * 2516 * TODO: cancel the off-channel operation 2517 * when we get the SKB's TX status and 2518 * the wait time was zero before. 2519 */ 2520 if (!duration) 2521 duration = 10; 2522 2523 ret = drv_remain_on_channel(local, sdata, channel, duration, type); 2524 if (ret) { 2525 kfree(roc); 2526 return ret; 2527 } 2528 2529 roc->started = true; 2530 goto out_queue; 2531 2532 out_check_combine: 2533 list_for_each_entry(tmp, &local->roc_list, list) { 2534 if (tmp->chan != channel || tmp->sdata != sdata) 2535 continue; 2536 2537 /* 2538 * Extend this ROC if possible: 2539 * 2540 * If it hasn't started yet, just increase the duration 2541 * and add the new one to the list of dependents. 2542 * If the type of the new ROC has higher priority, modify the 2543 * type of the previous one to match that of the new one. 2544 */ 2545 if (!tmp->started) { 2546 list_add_tail(&roc->list, &tmp->dependents); 2547 tmp->duration = max(tmp->duration, roc->duration); 2548 tmp->type = max(tmp->type, roc->type); 2549 queued = true; 2550 break; 2551 } 2552 2553 /* If it has already started, it's more difficult ... */ 2554 if (local->ops->remain_on_channel) { 2555 unsigned long j = jiffies; 2556 2557 /* 2558 * In the offloaded ROC case, if it hasn't begun, add 2559 * this new one to the dependent list to be handled 2560 * when the master one begins. If it has begun, 2561 * check that there's still a minimum time left and 2562 * if so, start this one, transmitting the frame, but 2563 * add it to the list directly after this one with 2564 * a reduced time so we'll ask the driver to execute 2565 * it right after finishing the previous one, in the 2566 * hope that it'll also be executed right afterwards, 2567 * effectively extending the old one. 2568 * If there's no minimum time left, just add it to the 2569 * normal list. 2570 * TODO: the ROC type is ignored here, assuming that it 2571 * is better to immediately use the current ROC. 2572 */ 2573 if (!tmp->hw_begun) { 2574 list_add_tail(&roc->list, &tmp->dependents); 2575 queued = true; 2576 break; 2577 } 2578 2579 if (time_before(j + IEEE80211_ROC_MIN_LEFT, 2580 tmp->hw_start_time + 2581 msecs_to_jiffies(tmp->duration))) { 2582 int new_dur; 2583 2584 ieee80211_handle_roc_started(roc); 2585 2586 new_dur = roc->duration - 2587 jiffies_to_msecs(tmp->hw_start_time + 2588 msecs_to_jiffies( 2589 tmp->duration) - 2590 j); 2591 2592 if (new_dur > 0) { 2593 /* add right after tmp */ 2594 list_add(&roc->list, &tmp->list); 2595 } else { 2596 list_add_tail(&roc->list, 2597 &tmp->dependents); 2598 } 2599 queued = true; 2600 } 2601 } else if (del_timer_sync(&tmp->work.timer)) { 2602 unsigned long new_end; 2603 2604 /* 2605 * In the software ROC case, cancel the timer, if 2606 * that fails then the finish work is already 2607 * queued/pending and thus we queue the new ROC 2608 * normally, if that succeeds then we can extend 2609 * the timer duration and TX the frame (if any.) 2610 */ 2611 2612 list_add_tail(&roc->list, &tmp->dependents); 2613 queued = true; 2614 2615 new_end = jiffies + msecs_to_jiffies(roc->duration); 2616 2617 /* ok, it was started & we canceled timer */ 2618 if (time_after(new_end, tmp->work.timer.expires)) 2619 mod_timer(&tmp->work.timer, new_end); 2620 else 2621 add_timer(&tmp->work.timer); 2622 2623 ieee80211_handle_roc_started(roc); 2624 } 2625 break; 2626 } 2627 2628 out_queue: 2629 if (!queued) 2630 list_add_tail(&roc->list, &local->roc_list); 2631 2632 /* 2633 * cookie is either the roc cookie (for normal roc) 2634 * or the SKB (for mgmt TX) 2635 */ 2636 if (!txskb) { 2637 /* local->mtx protects this */ 2638 local->roc_cookie_counter++; 2639 roc->cookie = local->roc_cookie_counter; 2640 /* wow, you wrapped 64 bits ... more likely a bug */ 2641 if (WARN_ON(roc->cookie == 0)) { 2642 roc->cookie = 1; 2643 local->roc_cookie_counter++; 2644 } 2645 *cookie = roc->cookie; 2646 } else { 2647 *cookie = (unsigned long)txskb; 2648 } 2649 2650 return 0; 2651 } 2652 2653 static int ieee80211_remain_on_channel(struct wiphy *wiphy, 2654 struct wireless_dev *wdev, 2655 struct ieee80211_channel *chan, 2656 unsigned int duration, 2657 u64 *cookie) 2658 { 2659 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 2660 struct ieee80211_local *local = sdata->local; 2661 int ret; 2662 2663 mutex_lock(&local->mtx); 2664 ret = ieee80211_start_roc_work(local, sdata, chan, 2665 duration, cookie, NULL, 2666 IEEE80211_ROC_TYPE_NORMAL); 2667 mutex_unlock(&local->mtx); 2668 2669 return ret; 2670 } 2671 2672 static int ieee80211_cancel_roc(struct ieee80211_local *local, 2673 u64 cookie, bool mgmt_tx) 2674 { 2675 struct ieee80211_roc_work *roc, *tmp, *found = NULL; 2676 int ret; 2677 2678 mutex_lock(&local->mtx); 2679 list_for_each_entry_safe(roc, tmp, &local->roc_list, list) { 2680 struct ieee80211_roc_work *dep, *tmp2; 2681 2682 list_for_each_entry_safe(dep, tmp2, &roc->dependents, list) { 2683 if (!mgmt_tx && dep->cookie != cookie) 2684 continue; 2685 else if (mgmt_tx && dep->mgmt_tx_cookie != cookie) 2686 continue; 2687 /* found dependent item -- just remove it */ 2688 list_del(&dep->list); 2689 mutex_unlock(&local->mtx); 2690 2691 ieee80211_roc_notify_destroy(dep, true); 2692 return 0; 2693 } 2694 2695 if (!mgmt_tx && roc->cookie != cookie) 2696 continue; 2697 else if (mgmt_tx && roc->mgmt_tx_cookie != cookie) 2698 continue; 2699 2700 found = roc; 2701 break; 2702 } 2703 2704 if (!found) { 2705 mutex_unlock(&local->mtx); 2706 return -ENOENT; 2707 } 2708 2709 /* 2710 * We found the item to cancel, so do that. Note that it 2711 * may have dependents, which we also cancel (and send 2712 * the expired signal for.) Not doing so would be quite 2713 * tricky here, but we may need to fix it later. 2714 */ 2715 2716 if (local->ops->remain_on_channel) { 2717 if (found->started) { 2718 ret = drv_cancel_remain_on_channel(local); 2719 if (WARN_ON_ONCE(ret)) { 2720 mutex_unlock(&local->mtx); 2721 return ret; 2722 } 2723 } 2724 2725 list_del(&found->list); 2726 2727 if (found->started) 2728 ieee80211_start_next_roc(local); 2729 mutex_unlock(&local->mtx); 2730 2731 ieee80211_roc_notify_destroy(found, true); 2732 } else { 2733 /* work may be pending so use it all the time */ 2734 found->abort = true; 2735 ieee80211_queue_delayed_work(&local->hw, &found->work, 0); 2736 2737 mutex_unlock(&local->mtx); 2738 2739 /* work will clean up etc */ 2740 flush_delayed_work(&found->work); 2741 WARN_ON(!found->to_be_freed); 2742 kfree(found); 2743 } 2744 2745 return 0; 2746 } 2747 2748 static int ieee80211_cancel_remain_on_channel(struct wiphy *wiphy, 2749 struct wireless_dev *wdev, 2750 u64 cookie) 2751 { 2752 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 2753 struct ieee80211_local *local = sdata->local; 2754 2755 return ieee80211_cancel_roc(local, cookie, false); 2756 } 2757 2758 static int ieee80211_start_radar_detection(struct wiphy *wiphy, 2759 struct net_device *dev, 2760 struct cfg80211_chan_def *chandef) 2761 { 2762 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2763 struct ieee80211_local *local = sdata->local; 2764 unsigned long timeout; 2765 int err; 2766 2767 if (!list_empty(&local->roc_list) || local->scanning) 2768 return -EBUSY; 2769 2770 /* whatever, but channel contexts should not complain about that one */ 2771 sdata->smps_mode = IEEE80211_SMPS_OFF; 2772 sdata->needed_rx_chains = local->rx_chains; 2773 sdata->radar_required = true; 2774 2775 mutex_lock(&local->iflist_mtx); 2776 err = ieee80211_vif_use_channel(sdata, chandef, 2777 IEEE80211_CHANCTX_SHARED); 2778 mutex_unlock(&local->iflist_mtx); 2779 if (err) 2780 return err; 2781 2782 timeout = msecs_to_jiffies(IEEE80211_DFS_MIN_CAC_TIME_MS); 2783 ieee80211_queue_delayed_work(&sdata->local->hw, 2784 &sdata->dfs_cac_timer_work, timeout); 2785 2786 return 0; 2787 } 2788 2789 static int ieee80211_mgmt_tx(struct wiphy *wiphy, struct wireless_dev *wdev, 2790 struct ieee80211_channel *chan, bool offchan, 2791 unsigned int wait, const u8 *buf, size_t len, 2792 bool no_cck, bool dont_wait_for_ack, u64 *cookie) 2793 { 2794 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 2795 struct ieee80211_local *local = sdata->local; 2796 struct sk_buff *skb; 2797 struct sta_info *sta; 2798 const struct ieee80211_mgmt *mgmt = (void *)buf; 2799 bool need_offchan = false; 2800 u32 flags; 2801 int ret; 2802 2803 if (dont_wait_for_ack) 2804 flags = IEEE80211_TX_CTL_NO_ACK; 2805 else 2806 flags = IEEE80211_TX_INTFL_NL80211_FRAME_TX | 2807 IEEE80211_TX_CTL_REQ_TX_STATUS; 2808 2809 if (no_cck) 2810 flags |= IEEE80211_TX_CTL_NO_CCK_RATE; 2811 2812 switch (sdata->vif.type) { 2813 case NL80211_IFTYPE_ADHOC: 2814 if (!sdata->vif.bss_conf.ibss_joined) 2815 need_offchan = true; 2816 /* fall through */ 2817 #ifdef CONFIG_MAC80211_MESH 2818 case NL80211_IFTYPE_MESH_POINT: 2819 if (ieee80211_vif_is_mesh(&sdata->vif) && 2820 !sdata->u.mesh.mesh_id_len) 2821 need_offchan = true; 2822 /* fall through */ 2823 #endif 2824 case NL80211_IFTYPE_AP: 2825 case NL80211_IFTYPE_AP_VLAN: 2826 case NL80211_IFTYPE_P2P_GO: 2827 if (sdata->vif.type != NL80211_IFTYPE_ADHOC && 2828 !ieee80211_vif_is_mesh(&sdata->vif) && 2829 !rcu_access_pointer(sdata->bss->beacon)) 2830 need_offchan = true; 2831 if (!ieee80211_is_action(mgmt->frame_control) || 2832 mgmt->u.action.category == WLAN_CATEGORY_PUBLIC || 2833 mgmt->u.action.category == WLAN_CATEGORY_SELF_PROTECTED) 2834 break; 2835 rcu_read_lock(); 2836 sta = sta_info_get(sdata, mgmt->da); 2837 rcu_read_unlock(); 2838 if (!sta) 2839 return -ENOLINK; 2840 break; 2841 case NL80211_IFTYPE_STATION: 2842 case NL80211_IFTYPE_P2P_CLIENT: 2843 if (!sdata->u.mgd.associated) 2844 need_offchan = true; 2845 break; 2846 case NL80211_IFTYPE_P2P_DEVICE: 2847 need_offchan = true; 2848 break; 2849 default: 2850 return -EOPNOTSUPP; 2851 } 2852 2853 /* configurations requiring offchan cannot work if no channel has been 2854 * specified 2855 */ 2856 if (need_offchan && !chan) 2857 return -EINVAL; 2858 2859 mutex_lock(&local->mtx); 2860 2861 /* Check if the operating channel is the requested channel */ 2862 if (!need_offchan) { 2863 struct ieee80211_chanctx_conf *chanctx_conf; 2864 2865 rcu_read_lock(); 2866 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); 2867 2868 if (chanctx_conf) { 2869 need_offchan = chan && (chan != chanctx_conf->def.chan); 2870 } else if (!chan) { 2871 ret = -EINVAL; 2872 rcu_read_unlock(); 2873 goto out_unlock; 2874 } else { 2875 need_offchan = true; 2876 } 2877 rcu_read_unlock(); 2878 } 2879 2880 if (need_offchan && !offchan) { 2881 ret = -EBUSY; 2882 goto out_unlock; 2883 } 2884 2885 skb = dev_alloc_skb(local->hw.extra_tx_headroom + len); 2886 if (!skb) { 2887 ret = -ENOMEM; 2888 goto out_unlock; 2889 } 2890 skb_reserve(skb, local->hw.extra_tx_headroom); 2891 2892 memcpy(skb_put(skb, len), buf, len); 2893 2894 IEEE80211_SKB_CB(skb)->flags = flags; 2895 2896 skb->dev = sdata->dev; 2897 2898 if (!need_offchan) { 2899 *cookie = (unsigned long) skb; 2900 ieee80211_tx_skb(sdata, skb); 2901 ret = 0; 2902 goto out_unlock; 2903 } 2904 2905 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_TX_OFFCHAN | 2906 IEEE80211_TX_INTFL_OFFCHAN_TX_OK; 2907 if (local->hw.flags & IEEE80211_HW_QUEUE_CONTROL) 2908 IEEE80211_SKB_CB(skb)->hw_queue = 2909 local->hw.offchannel_tx_hw_queue; 2910 2911 /* This will handle all kinds of coalescing and immediate TX */ 2912 ret = ieee80211_start_roc_work(local, sdata, chan, 2913 wait, cookie, skb, 2914 IEEE80211_ROC_TYPE_MGMT_TX); 2915 if (ret) 2916 kfree_skb(skb); 2917 out_unlock: 2918 mutex_unlock(&local->mtx); 2919 return ret; 2920 } 2921 2922 static int ieee80211_mgmt_tx_cancel_wait(struct wiphy *wiphy, 2923 struct wireless_dev *wdev, 2924 u64 cookie) 2925 { 2926 struct ieee80211_local *local = wiphy_priv(wiphy); 2927 2928 return ieee80211_cancel_roc(local, cookie, true); 2929 } 2930 2931 static void ieee80211_mgmt_frame_register(struct wiphy *wiphy, 2932 struct wireless_dev *wdev, 2933 u16 frame_type, bool reg) 2934 { 2935 struct ieee80211_local *local = wiphy_priv(wiphy); 2936 2937 switch (frame_type) { 2938 case IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_PROBE_REQ: 2939 if (reg) 2940 local->probe_req_reg++; 2941 else 2942 local->probe_req_reg--; 2943 2944 if (!local->open_count) 2945 break; 2946 2947 ieee80211_queue_work(&local->hw, &local->reconfig_filter); 2948 break; 2949 default: 2950 break; 2951 } 2952 } 2953 2954 static int ieee80211_set_antenna(struct wiphy *wiphy, u32 tx_ant, u32 rx_ant) 2955 { 2956 struct ieee80211_local *local = wiphy_priv(wiphy); 2957 2958 if (local->started) 2959 return -EOPNOTSUPP; 2960 2961 return drv_set_antenna(local, tx_ant, rx_ant); 2962 } 2963 2964 static int ieee80211_get_antenna(struct wiphy *wiphy, u32 *tx_ant, u32 *rx_ant) 2965 { 2966 struct ieee80211_local *local = wiphy_priv(wiphy); 2967 2968 return drv_get_antenna(local, tx_ant, rx_ant); 2969 } 2970 2971 static int ieee80211_set_ringparam(struct wiphy *wiphy, u32 tx, u32 rx) 2972 { 2973 struct ieee80211_local *local = wiphy_priv(wiphy); 2974 2975 return drv_set_ringparam(local, tx, rx); 2976 } 2977 2978 static void ieee80211_get_ringparam(struct wiphy *wiphy, 2979 u32 *tx, u32 *tx_max, u32 *rx, u32 *rx_max) 2980 { 2981 struct ieee80211_local *local = wiphy_priv(wiphy); 2982 2983 drv_get_ringparam(local, tx, tx_max, rx, rx_max); 2984 } 2985 2986 static int ieee80211_set_rekey_data(struct wiphy *wiphy, 2987 struct net_device *dev, 2988 struct cfg80211_gtk_rekey_data *data) 2989 { 2990 struct ieee80211_local *local = wiphy_priv(wiphy); 2991 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2992 2993 if (!local->ops->set_rekey_data) 2994 return -EOPNOTSUPP; 2995 2996 drv_set_rekey_data(local, sdata, data); 2997 2998 return 0; 2999 } 3000 3001 static void ieee80211_tdls_add_ext_capab(struct sk_buff *skb) 3002 { 3003 u8 *pos = (void *)skb_put(skb, 7); 3004 3005 *pos++ = WLAN_EID_EXT_CAPABILITY; 3006 *pos++ = 5; /* len */ 3007 *pos++ = 0x0; 3008 *pos++ = 0x0; 3009 *pos++ = 0x0; 3010 *pos++ = 0x0; 3011 *pos++ = WLAN_EXT_CAPA5_TDLS_ENABLED; 3012 } 3013 3014 static u16 ieee80211_get_tdls_sta_capab(struct ieee80211_sub_if_data *sdata) 3015 { 3016 struct ieee80211_local *local = sdata->local; 3017 u16 capab; 3018 3019 capab = 0; 3020 if (ieee80211_get_sdata_band(sdata) != IEEE80211_BAND_2GHZ) 3021 return capab; 3022 3023 if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_SLOT_INCAPABLE)) 3024 capab |= WLAN_CAPABILITY_SHORT_SLOT_TIME; 3025 if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_PREAMBLE_INCAPABLE)) 3026 capab |= WLAN_CAPABILITY_SHORT_PREAMBLE; 3027 3028 return capab; 3029 } 3030 3031 static void ieee80211_tdls_add_link_ie(struct sk_buff *skb, u8 *src_addr, 3032 u8 *peer, u8 *bssid) 3033 { 3034 struct ieee80211_tdls_lnkie *lnkid; 3035 3036 lnkid = (void *)skb_put(skb, sizeof(struct ieee80211_tdls_lnkie)); 3037 3038 lnkid->ie_type = WLAN_EID_LINK_ID; 3039 lnkid->ie_len = sizeof(struct ieee80211_tdls_lnkie) - 2; 3040 3041 memcpy(lnkid->bssid, bssid, ETH_ALEN); 3042 memcpy(lnkid->init_sta, src_addr, ETH_ALEN); 3043 memcpy(lnkid->resp_sta, peer, ETH_ALEN); 3044 } 3045 3046 static int 3047 ieee80211_prep_tdls_encap_data(struct wiphy *wiphy, struct net_device *dev, 3048 u8 *peer, u8 action_code, u8 dialog_token, 3049 u16 status_code, struct sk_buff *skb) 3050 { 3051 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 3052 enum ieee80211_band band = ieee80211_get_sdata_band(sdata); 3053 struct ieee80211_tdls_data *tf; 3054 3055 tf = (void *)skb_put(skb, offsetof(struct ieee80211_tdls_data, u)); 3056 3057 memcpy(tf->da, peer, ETH_ALEN); 3058 memcpy(tf->sa, sdata->vif.addr, ETH_ALEN); 3059 tf->ether_type = cpu_to_be16(ETH_P_TDLS); 3060 tf->payload_type = WLAN_TDLS_SNAP_RFTYPE; 3061 3062 switch (action_code) { 3063 case WLAN_TDLS_SETUP_REQUEST: 3064 tf->category = WLAN_CATEGORY_TDLS; 3065 tf->action_code = WLAN_TDLS_SETUP_REQUEST; 3066 3067 skb_put(skb, sizeof(tf->u.setup_req)); 3068 tf->u.setup_req.dialog_token = dialog_token; 3069 tf->u.setup_req.capability = 3070 cpu_to_le16(ieee80211_get_tdls_sta_capab(sdata)); 3071 3072 ieee80211_add_srates_ie(sdata, skb, false, band); 3073 ieee80211_add_ext_srates_ie(sdata, skb, false, band); 3074 ieee80211_tdls_add_ext_capab(skb); 3075 break; 3076 case WLAN_TDLS_SETUP_RESPONSE: 3077 tf->category = WLAN_CATEGORY_TDLS; 3078 tf->action_code = WLAN_TDLS_SETUP_RESPONSE; 3079 3080 skb_put(skb, sizeof(tf->u.setup_resp)); 3081 tf->u.setup_resp.status_code = cpu_to_le16(status_code); 3082 tf->u.setup_resp.dialog_token = dialog_token; 3083 tf->u.setup_resp.capability = 3084 cpu_to_le16(ieee80211_get_tdls_sta_capab(sdata)); 3085 3086 ieee80211_add_srates_ie(sdata, skb, false, band); 3087 ieee80211_add_ext_srates_ie(sdata, skb, false, band); 3088 ieee80211_tdls_add_ext_capab(skb); 3089 break; 3090 case WLAN_TDLS_SETUP_CONFIRM: 3091 tf->category = WLAN_CATEGORY_TDLS; 3092 tf->action_code = WLAN_TDLS_SETUP_CONFIRM; 3093 3094 skb_put(skb, sizeof(tf->u.setup_cfm)); 3095 tf->u.setup_cfm.status_code = cpu_to_le16(status_code); 3096 tf->u.setup_cfm.dialog_token = dialog_token; 3097 break; 3098 case WLAN_TDLS_TEARDOWN: 3099 tf->category = WLAN_CATEGORY_TDLS; 3100 tf->action_code = WLAN_TDLS_TEARDOWN; 3101 3102 skb_put(skb, sizeof(tf->u.teardown)); 3103 tf->u.teardown.reason_code = cpu_to_le16(status_code); 3104 break; 3105 case WLAN_TDLS_DISCOVERY_REQUEST: 3106 tf->category = WLAN_CATEGORY_TDLS; 3107 tf->action_code = WLAN_TDLS_DISCOVERY_REQUEST; 3108 3109 skb_put(skb, sizeof(tf->u.discover_req)); 3110 tf->u.discover_req.dialog_token = dialog_token; 3111 break; 3112 default: 3113 return -EINVAL; 3114 } 3115 3116 return 0; 3117 } 3118 3119 static int 3120 ieee80211_prep_tdls_direct(struct wiphy *wiphy, struct net_device *dev, 3121 u8 *peer, u8 action_code, u8 dialog_token, 3122 u16 status_code, struct sk_buff *skb) 3123 { 3124 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 3125 enum ieee80211_band band = ieee80211_get_sdata_band(sdata); 3126 struct ieee80211_mgmt *mgmt; 3127 3128 mgmt = (void *)skb_put(skb, 24); 3129 memset(mgmt, 0, 24); 3130 memcpy(mgmt->da, peer, ETH_ALEN); 3131 memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN); 3132 memcpy(mgmt->bssid, sdata->u.mgd.bssid, ETH_ALEN); 3133 3134 mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | 3135 IEEE80211_STYPE_ACTION); 3136 3137 switch (action_code) { 3138 case WLAN_PUB_ACTION_TDLS_DISCOVER_RES: 3139 skb_put(skb, 1 + sizeof(mgmt->u.action.u.tdls_discover_resp)); 3140 mgmt->u.action.category = WLAN_CATEGORY_PUBLIC; 3141 mgmt->u.action.u.tdls_discover_resp.action_code = 3142 WLAN_PUB_ACTION_TDLS_DISCOVER_RES; 3143 mgmt->u.action.u.tdls_discover_resp.dialog_token = 3144 dialog_token; 3145 mgmt->u.action.u.tdls_discover_resp.capability = 3146 cpu_to_le16(ieee80211_get_tdls_sta_capab(sdata)); 3147 3148 ieee80211_add_srates_ie(sdata, skb, false, band); 3149 ieee80211_add_ext_srates_ie(sdata, skb, false, band); 3150 ieee80211_tdls_add_ext_capab(skb); 3151 break; 3152 default: 3153 return -EINVAL; 3154 } 3155 3156 return 0; 3157 } 3158 3159 static int ieee80211_tdls_mgmt(struct wiphy *wiphy, struct net_device *dev, 3160 u8 *peer, u8 action_code, u8 dialog_token, 3161 u16 status_code, const u8 *extra_ies, 3162 size_t extra_ies_len) 3163 { 3164 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 3165 struct ieee80211_local *local = sdata->local; 3166 struct sk_buff *skb = NULL; 3167 bool send_direct; 3168 int ret; 3169 3170 if (!(wiphy->flags & WIPHY_FLAG_SUPPORTS_TDLS)) 3171 return -ENOTSUPP; 3172 3173 /* make sure we are in managed mode, and associated */ 3174 if (sdata->vif.type != NL80211_IFTYPE_STATION || 3175 !sdata->u.mgd.associated) 3176 return -EINVAL; 3177 3178 tdls_dbg(sdata, "TDLS mgmt action %d peer %pM\n", 3179 action_code, peer); 3180 3181 skb = dev_alloc_skb(local->hw.extra_tx_headroom + 3182 max(sizeof(struct ieee80211_mgmt), 3183 sizeof(struct ieee80211_tdls_data)) + 3184 50 + /* supported rates */ 3185 7 + /* ext capab */ 3186 extra_ies_len + 3187 sizeof(struct ieee80211_tdls_lnkie)); 3188 if (!skb) 3189 return -ENOMEM; 3190 3191 skb_reserve(skb, local->hw.extra_tx_headroom); 3192 3193 switch (action_code) { 3194 case WLAN_TDLS_SETUP_REQUEST: 3195 case WLAN_TDLS_SETUP_RESPONSE: 3196 case WLAN_TDLS_SETUP_CONFIRM: 3197 case WLAN_TDLS_TEARDOWN: 3198 case WLAN_TDLS_DISCOVERY_REQUEST: 3199 ret = ieee80211_prep_tdls_encap_data(wiphy, dev, peer, 3200 action_code, dialog_token, 3201 status_code, skb); 3202 send_direct = false; 3203 break; 3204 case WLAN_PUB_ACTION_TDLS_DISCOVER_RES: 3205 ret = ieee80211_prep_tdls_direct(wiphy, dev, peer, action_code, 3206 dialog_token, status_code, 3207 skb); 3208 send_direct = true; 3209 break; 3210 default: 3211 ret = -ENOTSUPP; 3212 break; 3213 } 3214 3215 if (ret < 0) 3216 goto fail; 3217 3218 if (extra_ies_len) 3219 memcpy(skb_put(skb, extra_ies_len), extra_ies, extra_ies_len); 3220 3221 /* the TDLS link IE is always added last */ 3222 switch (action_code) { 3223 case WLAN_TDLS_SETUP_REQUEST: 3224 case WLAN_TDLS_SETUP_CONFIRM: 3225 case WLAN_TDLS_TEARDOWN: 3226 case WLAN_TDLS_DISCOVERY_REQUEST: 3227 /* we are the initiator */ 3228 ieee80211_tdls_add_link_ie(skb, sdata->vif.addr, peer, 3229 sdata->u.mgd.bssid); 3230 break; 3231 case WLAN_TDLS_SETUP_RESPONSE: 3232 case WLAN_PUB_ACTION_TDLS_DISCOVER_RES: 3233 /* we are the responder */ 3234 ieee80211_tdls_add_link_ie(skb, peer, sdata->vif.addr, 3235 sdata->u.mgd.bssid); 3236 break; 3237 default: 3238 ret = -ENOTSUPP; 3239 goto fail; 3240 } 3241 3242 if (send_direct) { 3243 ieee80211_tx_skb(sdata, skb); 3244 return 0; 3245 } 3246 3247 /* 3248 * According to 802.11z: Setup req/resp are sent in AC_BK, otherwise 3249 * we should default to AC_VI. 3250 */ 3251 switch (action_code) { 3252 case WLAN_TDLS_SETUP_REQUEST: 3253 case WLAN_TDLS_SETUP_RESPONSE: 3254 skb_set_queue_mapping(skb, IEEE80211_AC_BK); 3255 skb->priority = 2; 3256 break; 3257 default: 3258 skb_set_queue_mapping(skb, IEEE80211_AC_VI); 3259 skb->priority = 5; 3260 break; 3261 } 3262 3263 /* disable bottom halves when entering the Tx path */ 3264 local_bh_disable(); 3265 ret = ieee80211_subif_start_xmit(skb, dev); 3266 local_bh_enable(); 3267 3268 return ret; 3269 3270 fail: 3271 dev_kfree_skb(skb); 3272 return ret; 3273 } 3274 3275 static int ieee80211_tdls_oper(struct wiphy *wiphy, struct net_device *dev, 3276 u8 *peer, enum nl80211_tdls_operation oper) 3277 { 3278 struct sta_info *sta; 3279 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 3280 3281 if (!(wiphy->flags & WIPHY_FLAG_SUPPORTS_TDLS)) 3282 return -ENOTSUPP; 3283 3284 if (sdata->vif.type != NL80211_IFTYPE_STATION) 3285 return -EINVAL; 3286 3287 tdls_dbg(sdata, "TDLS oper %d peer %pM\n", oper, peer); 3288 3289 switch (oper) { 3290 case NL80211_TDLS_ENABLE_LINK: 3291 rcu_read_lock(); 3292 sta = sta_info_get(sdata, peer); 3293 if (!sta) { 3294 rcu_read_unlock(); 3295 return -ENOLINK; 3296 } 3297 3298 set_sta_flag(sta, WLAN_STA_TDLS_PEER_AUTH); 3299 rcu_read_unlock(); 3300 break; 3301 case NL80211_TDLS_DISABLE_LINK: 3302 return sta_info_destroy_addr(sdata, peer); 3303 case NL80211_TDLS_TEARDOWN: 3304 case NL80211_TDLS_SETUP: 3305 case NL80211_TDLS_DISCOVERY_REQ: 3306 /* We don't support in-driver setup/teardown/discovery */ 3307 return -ENOTSUPP; 3308 default: 3309 return -ENOTSUPP; 3310 } 3311 3312 return 0; 3313 } 3314 3315 static int ieee80211_probe_client(struct wiphy *wiphy, struct net_device *dev, 3316 const u8 *peer, u64 *cookie) 3317 { 3318 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 3319 struct ieee80211_local *local = sdata->local; 3320 struct ieee80211_qos_hdr *nullfunc; 3321 struct sk_buff *skb; 3322 int size = sizeof(*nullfunc); 3323 __le16 fc; 3324 bool qos; 3325 struct ieee80211_tx_info *info; 3326 struct sta_info *sta; 3327 struct ieee80211_chanctx_conf *chanctx_conf; 3328 enum ieee80211_band band; 3329 3330 rcu_read_lock(); 3331 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); 3332 if (WARN_ON(!chanctx_conf)) { 3333 rcu_read_unlock(); 3334 return -EINVAL; 3335 } 3336 band = chanctx_conf->def.chan->band; 3337 sta = sta_info_get(sdata, peer); 3338 if (sta) { 3339 qos = test_sta_flag(sta, WLAN_STA_WME); 3340 } else { 3341 rcu_read_unlock(); 3342 return -ENOLINK; 3343 } 3344 3345 if (qos) { 3346 fc = cpu_to_le16(IEEE80211_FTYPE_DATA | 3347 IEEE80211_STYPE_QOS_NULLFUNC | 3348 IEEE80211_FCTL_FROMDS); 3349 } else { 3350 size -= 2; 3351 fc = cpu_to_le16(IEEE80211_FTYPE_DATA | 3352 IEEE80211_STYPE_NULLFUNC | 3353 IEEE80211_FCTL_FROMDS); 3354 } 3355 3356 skb = dev_alloc_skb(local->hw.extra_tx_headroom + size); 3357 if (!skb) { 3358 rcu_read_unlock(); 3359 return -ENOMEM; 3360 } 3361 3362 skb->dev = dev; 3363 3364 skb_reserve(skb, local->hw.extra_tx_headroom); 3365 3366 nullfunc = (void *) skb_put(skb, size); 3367 nullfunc->frame_control = fc; 3368 nullfunc->duration_id = 0; 3369 memcpy(nullfunc->addr1, sta->sta.addr, ETH_ALEN); 3370 memcpy(nullfunc->addr2, sdata->vif.addr, ETH_ALEN); 3371 memcpy(nullfunc->addr3, sdata->vif.addr, ETH_ALEN); 3372 nullfunc->seq_ctrl = 0; 3373 3374 info = IEEE80211_SKB_CB(skb); 3375 3376 info->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS | 3377 IEEE80211_TX_INTFL_NL80211_FRAME_TX; 3378 3379 skb_set_queue_mapping(skb, IEEE80211_AC_VO); 3380 skb->priority = 7; 3381 if (qos) 3382 nullfunc->qos_ctrl = cpu_to_le16(7); 3383 3384 local_bh_disable(); 3385 ieee80211_xmit(sdata, skb, band); 3386 local_bh_enable(); 3387 rcu_read_unlock(); 3388 3389 *cookie = (unsigned long) skb; 3390 return 0; 3391 } 3392 3393 static int ieee80211_cfg_get_channel(struct wiphy *wiphy, 3394 struct wireless_dev *wdev, 3395 struct cfg80211_chan_def *chandef) 3396 { 3397 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 3398 struct ieee80211_local *local = wiphy_priv(wiphy); 3399 struct ieee80211_chanctx_conf *chanctx_conf; 3400 int ret = -ENODATA; 3401 3402 rcu_read_lock(); 3403 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); 3404 if (chanctx_conf) { 3405 *chandef = chanctx_conf->def; 3406 ret = 0; 3407 } else if (local->open_count > 0 && 3408 local->open_count == local->monitors && 3409 sdata->vif.type == NL80211_IFTYPE_MONITOR) { 3410 if (local->use_chanctx) 3411 *chandef = local->monitor_chandef; 3412 else 3413 *chandef = local->_oper_chandef; 3414 ret = 0; 3415 } 3416 rcu_read_unlock(); 3417 3418 return ret; 3419 } 3420 3421 #ifdef CONFIG_PM 3422 static void ieee80211_set_wakeup(struct wiphy *wiphy, bool enabled) 3423 { 3424 drv_set_wakeup(wiphy_priv(wiphy), enabled); 3425 } 3426 #endif 3427 3428 struct cfg80211_ops mac80211_config_ops = { 3429 .add_virtual_intf = ieee80211_add_iface, 3430 .del_virtual_intf = ieee80211_del_iface, 3431 .change_virtual_intf = ieee80211_change_iface, 3432 .start_p2p_device = ieee80211_start_p2p_device, 3433 .stop_p2p_device = ieee80211_stop_p2p_device, 3434 .add_key = ieee80211_add_key, 3435 .del_key = ieee80211_del_key, 3436 .get_key = ieee80211_get_key, 3437 .set_default_key = ieee80211_config_default_key, 3438 .set_default_mgmt_key = ieee80211_config_default_mgmt_key, 3439 .start_ap = ieee80211_start_ap, 3440 .change_beacon = ieee80211_change_beacon, 3441 .stop_ap = ieee80211_stop_ap, 3442 .add_station = ieee80211_add_station, 3443 .del_station = ieee80211_del_station, 3444 .change_station = ieee80211_change_station, 3445 .get_station = ieee80211_get_station, 3446 .dump_station = ieee80211_dump_station, 3447 .dump_survey = ieee80211_dump_survey, 3448 #ifdef CONFIG_MAC80211_MESH 3449 .add_mpath = ieee80211_add_mpath, 3450 .del_mpath = ieee80211_del_mpath, 3451 .change_mpath = ieee80211_change_mpath, 3452 .get_mpath = ieee80211_get_mpath, 3453 .dump_mpath = ieee80211_dump_mpath, 3454 .update_mesh_config = ieee80211_update_mesh_config, 3455 .get_mesh_config = ieee80211_get_mesh_config, 3456 .join_mesh = ieee80211_join_mesh, 3457 .leave_mesh = ieee80211_leave_mesh, 3458 #endif 3459 .change_bss = ieee80211_change_bss, 3460 .set_txq_params = ieee80211_set_txq_params, 3461 .set_monitor_channel = ieee80211_set_monitor_channel, 3462 .suspend = ieee80211_suspend, 3463 .resume = ieee80211_resume, 3464 .scan = ieee80211_scan, 3465 .sched_scan_start = ieee80211_sched_scan_start, 3466 .sched_scan_stop = ieee80211_sched_scan_stop, 3467 .auth = ieee80211_auth, 3468 .assoc = ieee80211_assoc, 3469 .deauth = ieee80211_deauth, 3470 .disassoc = ieee80211_disassoc, 3471 .join_ibss = ieee80211_join_ibss, 3472 .leave_ibss = ieee80211_leave_ibss, 3473 .set_mcast_rate = ieee80211_set_mcast_rate, 3474 .set_wiphy_params = ieee80211_set_wiphy_params, 3475 .set_tx_power = ieee80211_set_tx_power, 3476 .get_tx_power = ieee80211_get_tx_power, 3477 .set_wds_peer = ieee80211_set_wds_peer, 3478 .rfkill_poll = ieee80211_rfkill_poll, 3479 CFG80211_TESTMODE_CMD(ieee80211_testmode_cmd) 3480 CFG80211_TESTMODE_DUMP(ieee80211_testmode_dump) 3481 .set_power_mgmt = ieee80211_set_power_mgmt, 3482 .set_bitrate_mask = ieee80211_set_bitrate_mask, 3483 .remain_on_channel = ieee80211_remain_on_channel, 3484 .cancel_remain_on_channel = ieee80211_cancel_remain_on_channel, 3485 .mgmt_tx = ieee80211_mgmt_tx, 3486 .mgmt_tx_cancel_wait = ieee80211_mgmt_tx_cancel_wait, 3487 .set_cqm_rssi_config = ieee80211_set_cqm_rssi_config, 3488 .mgmt_frame_register = ieee80211_mgmt_frame_register, 3489 .set_antenna = ieee80211_set_antenna, 3490 .get_antenna = ieee80211_get_antenna, 3491 .set_ringparam = ieee80211_set_ringparam, 3492 .get_ringparam = ieee80211_get_ringparam, 3493 .set_rekey_data = ieee80211_set_rekey_data, 3494 .tdls_oper = ieee80211_tdls_oper, 3495 .tdls_mgmt = ieee80211_tdls_mgmt, 3496 .probe_client = ieee80211_probe_client, 3497 .set_noack_map = ieee80211_set_noack_map, 3498 #ifdef CONFIG_PM 3499 .set_wakeup = ieee80211_set_wakeup, 3500 #endif 3501 .get_et_sset_count = ieee80211_get_et_sset_count, 3502 .get_et_stats = ieee80211_get_et_stats, 3503 .get_et_strings = ieee80211_get_et_strings, 3504 .get_channel = ieee80211_cfg_get_channel, 3505 .start_radar_detection = ieee80211_start_radar_detection, 3506 }; 3507