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