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 /* 77 * Prohibit MONITOR_FLAG_COOK_FRAMES to be 78 * changed while the interface is up. 79 * Else we would need to add a lot of cruft 80 * to update everything: 81 * cooked_mntrs, monitor and all fif_* counters 82 * reconfigure hardware 83 */ 84 if ((*flags & MONITOR_FLAG_COOK_FRAMES) != 85 (sdata->u.mntr_flags & MONITOR_FLAG_COOK_FRAMES)) 86 return -EBUSY; 87 88 ieee80211_adjust_monitor_flags(sdata, -1); 89 sdata->u.mntr_flags = *flags; 90 ieee80211_adjust_monitor_flags(sdata, 1); 91 92 ieee80211_configure_filter(local); 93 } else { 94 /* 95 * Because the interface is down, ieee80211_do_stop 96 * and ieee80211_do_open take care of "everything" 97 * mentioned in the comment above. 98 */ 99 sdata->u.mntr_flags = *flags; 100 } 101 } 102 103 return 0; 104 } 105 106 static int ieee80211_start_p2p_device(struct wiphy *wiphy, 107 struct wireless_dev *wdev) 108 { 109 return ieee80211_do_open(wdev, true); 110 } 111 112 static void ieee80211_stop_p2p_device(struct wiphy *wiphy, 113 struct wireless_dev *wdev) 114 { 115 ieee80211_sdata_stop(IEEE80211_WDEV_TO_SUB_IF(wdev)); 116 } 117 118 static int ieee80211_set_noack_map(struct wiphy *wiphy, 119 struct net_device *dev, 120 u16 noack_map) 121 { 122 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 123 124 sdata->noack_map = noack_map; 125 return 0; 126 } 127 128 static int ieee80211_add_key(struct wiphy *wiphy, struct net_device *dev, 129 u8 key_idx, bool pairwise, const u8 *mac_addr, 130 struct key_params *params) 131 { 132 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 133 struct sta_info *sta = NULL; 134 struct ieee80211_key *key; 135 int err; 136 137 if (!ieee80211_sdata_running(sdata)) 138 return -ENETDOWN; 139 140 /* reject WEP and TKIP keys if WEP failed to initialize */ 141 switch (params->cipher) { 142 case WLAN_CIPHER_SUITE_WEP40: 143 case WLAN_CIPHER_SUITE_TKIP: 144 case WLAN_CIPHER_SUITE_WEP104: 145 if (IS_ERR(sdata->local->wep_tx_tfm)) 146 return -EINVAL; 147 break; 148 default: 149 break; 150 } 151 152 key = ieee80211_key_alloc(params->cipher, key_idx, params->key_len, 153 params->key, params->seq_len, params->seq); 154 if (IS_ERR(key)) 155 return PTR_ERR(key); 156 157 if (pairwise) 158 key->conf.flags |= IEEE80211_KEY_FLAG_PAIRWISE; 159 160 mutex_lock(&sdata->local->sta_mtx); 161 162 if (mac_addr) { 163 if (ieee80211_vif_is_mesh(&sdata->vif)) 164 sta = sta_info_get(sdata, mac_addr); 165 else 166 sta = sta_info_get_bss(sdata, mac_addr); 167 /* 168 * The ASSOC test makes sure the driver is ready to 169 * receive the key. When wpa_supplicant has roamed 170 * using FT, it attempts to set the key before 171 * association has completed, this rejects that attempt 172 * so it will set the key again after assocation. 173 * 174 * TODO: accept the key if we have a station entry and 175 * add it to the device after the station. 176 */ 177 if (!sta || !test_sta_flag(sta, WLAN_STA_ASSOC)) { 178 ieee80211_key_free_unused(key); 179 err = -ENOENT; 180 goto out_unlock; 181 } 182 } 183 184 switch (sdata->vif.type) { 185 case NL80211_IFTYPE_STATION: 186 if (sdata->u.mgd.mfp != IEEE80211_MFP_DISABLED) 187 key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT; 188 break; 189 case NL80211_IFTYPE_AP: 190 case NL80211_IFTYPE_AP_VLAN: 191 /* Keys without a station are used for TX only */ 192 if (key->sta && test_sta_flag(key->sta, WLAN_STA_MFP)) 193 key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT; 194 break; 195 case NL80211_IFTYPE_ADHOC: 196 /* no MFP (yet) */ 197 break; 198 case NL80211_IFTYPE_MESH_POINT: 199 #ifdef CONFIG_MAC80211_MESH 200 if (sdata->u.mesh.security != IEEE80211_MESH_SEC_NONE) 201 key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT; 202 break; 203 #endif 204 case NL80211_IFTYPE_WDS: 205 case NL80211_IFTYPE_MONITOR: 206 case NL80211_IFTYPE_P2P_DEVICE: 207 case NL80211_IFTYPE_UNSPECIFIED: 208 case NUM_NL80211_IFTYPES: 209 case NL80211_IFTYPE_P2P_CLIENT: 210 case NL80211_IFTYPE_P2P_GO: 211 /* shouldn't happen */ 212 WARN_ON_ONCE(1); 213 break; 214 } 215 216 err = ieee80211_key_link(key, sdata, sta); 217 218 out_unlock: 219 mutex_unlock(&sdata->local->sta_mtx); 220 221 return err; 222 } 223 224 static int ieee80211_del_key(struct wiphy *wiphy, struct net_device *dev, 225 u8 key_idx, bool pairwise, const u8 *mac_addr) 226 { 227 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 228 struct ieee80211_local *local = sdata->local; 229 struct sta_info *sta; 230 struct ieee80211_key *key = NULL; 231 int ret; 232 233 mutex_lock(&local->sta_mtx); 234 mutex_lock(&local->key_mtx); 235 236 if (mac_addr) { 237 ret = -ENOENT; 238 239 sta = sta_info_get_bss(sdata, mac_addr); 240 if (!sta) 241 goto out_unlock; 242 243 if (pairwise) 244 key = key_mtx_dereference(local, sta->ptk); 245 else 246 key = key_mtx_dereference(local, sta->gtk[key_idx]); 247 } else 248 key = key_mtx_dereference(local, sdata->keys[key_idx]); 249 250 if (!key) { 251 ret = -ENOENT; 252 goto out_unlock; 253 } 254 255 ieee80211_key_free(key, true); 256 257 ret = 0; 258 out_unlock: 259 mutex_unlock(&local->key_mtx); 260 mutex_unlock(&local->sta_mtx); 261 262 return ret; 263 } 264 265 static int ieee80211_get_key(struct wiphy *wiphy, struct net_device *dev, 266 u8 key_idx, bool pairwise, const u8 *mac_addr, 267 void *cookie, 268 void (*callback)(void *cookie, 269 struct key_params *params)) 270 { 271 struct ieee80211_sub_if_data *sdata; 272 struct sta_info *sta = NULL; 273 u8 seq[6] = {0}; 274 struct key_params params; 275 struct ieee80211_key *key = NULL; 276 u64 pn64; 277 u32 iv32; 278 u16 iv16; 279 int err = -ENOENT; 280 281 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 282 283 rcu_read_lock(); 284 285 if (mac_addr) { 286 sta = sta_info_get_bss(sdata, mac_addr); 287 if (!sta) 288 goto out; 289 290 if (pairwise) 291 key = rcu_dereference(sta->ptk); 292 else if (key_idx < NUM_DEFAULT_KEYS) 293 key = rcu_dereference(sta->gtk[key_idx]); 294 } else 295 key = rcu_dereference(sdata->keys[key_idx]); 296 297 if (!key) 298 goto out; 299 300 memset(¶ms, 0, sizeof(params)); 301 302 params.cipher = key->conf.cipher; 303 304 switch (key->conf.cipher) { 305 case WLAN_CIPHER_SUITE_TKIP: 306 iv32 = key->u.tkip.tx.iv32; 307 iv16 = key->u.tkip.tx.iv16; 308 309 if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE) 310 drv_get_tkip_seq(sdata->local, 311 key->conf.hw_key_idx, 312 &iv32, &iv16); 313 314 seq[0] = iv16 & 0xff; 315 seq[1] = (iv16 >> 8) & 0xff; 316 seq[2] = iv32 & 0xff; 317 seq[3] = (iv32 >> 8) & 0xff; 318 seq[4] = (iv32 >> 16) & 0xff; 319 seq[5] = (iv32 >> 24) & 0xff; 320 params.seq = seq; 321 params.seq_len = 6; 322 break; 323 case WLAN_CIPHER_SUITE_CCMP: 324 pn64 = atomic64_read(&key->u.ccmp.tx_pn); 325 seq[0] = pn64; 326 seq[1] = pn64 >> 8; 327 seq[2] = pn64 >> 16; 328 seq[3] = pn64 >> 24; 329 seq[4] = pn64 >> 32; 330 seq[5] = pn64 >> 40; 331 params.seq = seq; 332 params.seq_len = 6; 333 break; 334 case WLAN_CIPHER_SUITE_AES_CMAC: 335 pn64 = atomic64_read(&key->u.aes_cmac.tx_pn); 336 seq[0] = pn64; 337 seq[1] = pn64 >> 8; 338 seq[2] = pn64 >> 16; 339 seq[3] = pn64 >> 24; 340 seq[4] = pn64 >> 32; 341 seq[5] = pn64 >> 40; 342 params.seq = seq; 343 params.seq_len = 6; 344 break; 345 } 346 347 params.key = key->conf.key; 348 params.key_len = key->conf.keylen; 349 350 callback(cookie, ¶ms); 351 err = 0; 352 353 out: 354 rcu_read_unlock(); 355 return err; 356 } 357 358 static int ieee80211_config_default_key(struct wiphy *wiphy, 359 struct net_device *dev, 360 u8 key_idx, bool uni, 361 bool multi) 362 { 363 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 364 365 ieee80211_set_default_key(sdata, key_idx, uni, multi); 366 367 return 0; 368 } 369 370 static int ieee80211_config_default_mgmt_key(struct wiphy *wiphy, 371 struct net_device *dev, 372 u8 key_idx) 373 { 374 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 375 376 ieee80211_set_default_mgmt_key(sdata, key_idx); 377 378 return 0; 379 } 380 381 void sta_set_rate_info_tx(struct sta_info *sta, 382 const struct ieee80211_tx_rate *rate, 383 struct rate_info *rinfo) 384 { 385 rinfo->flags = 0; 386 if (rate->flags & IEEE80211_TX_RC_MCS) { 387 rinfo->flags |= RATE_INFO_FLAGS_MCS; 388 rinfo->mcs = rate->idx; 389 } else if (rate->flags & IEEE80211_TX_RC_VHT_MCS) { 390 rinfo->flags |= RATE_INFO_FLAGS_VHT_MCS; 391 rinfo->mcs = ieee80211_rate_get_vht_mcs(rate); 392 rinfo->nss = ieee80211_rate_get_vht_nss(rate); 393 } else { 394 struct ieee80211_supported_band *sband; 395 sband = sta->local->hw.wiphy->bands[ 396 ieee80211_get_sdata_band(sta->sdata)]; 397 rinfo->legacy = sband->bitrates[rate->idx].bitrate; 398 } 399 if (rate->flags & IEEE80211_TX_RC_40_MHZ_WIDTH) 400 rinfo->flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH; 401 if (rate->flags & IEEE80211_TX_RC_80_MHZ_WIDTH) 402 rinfo->flags |= RATE_INFO_FLAGS_80_MHZ_WIDTH; 403 if (rate->flags & IEEE80211_TX_RC_160_MHZ_WIDTH) 404 rinfo->flags |= RATE_INFO_FLAGS_160_MHZ_WIDTH; 405 if (rate->flags & IEEE80211_TX_RC_SHORT_GI) 406 rinfo->flags |= RATE_INFO_FLAGS_SHORT_GI; 407 } 408 409 void sta_set_rate_info_rx(struct sta_info *sta, struct rate_info *rinfo) 410 { 411 rinfo->flags = 0; 412 413 if (sta->last_rx_rate_flag & RX_FLAG_HT) { 414 rinfo->flags |= RATE_INFO_FLAGS_MCS; 415 rinfo->mcs = sta->last_rx_rate_idx; 416 } else if (sta->last_rx_rate_flag & RX_FLAG_VHT) { 417 rinfo->flags |= RATE_INFO_FLAGS_VHT_MCS; 418 rinfo->nss = sta->last_rx_rate_vht_nss; 419 rinfo->mcs = sta->last_rx_rate_idx; 420 } else { 421 struct ieee80211_supported_band *sband; 422 423 sband = sta->local->hw.wiphy->bands[ 424 ieee80211_get_sdata_band(sta->sdata)]; 425 rinfo->legacy = 426 sband->bitrates[sta->last_rx_rate_idx].bitrate; 427 } 428 429 if (sta->last_rx_rate_flag & RX_FLAG_40MHZ) 430 rinfo->flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH; 431 if (sta->last_rx_rate_flag & RX_FLAG_SHORT_GI) 432 rinfo->flags |= RATE_INFO_FLAGS_SHORT_GI; 433 if (sta->last_rx_rate_flag & RX_FLAG_80MHZ) 434 rinfo->flags |= RATE_INFO_FLAGS_80_MHZ_WIDTH; 435 if (sta->last_rx_rate_flag & RX_FLAG_80P80MHZ) 436 rinfo->flags |= RATE_INFO_FLAGS_80P80_MHZ_WIDTH; 437 if (sta->last_rx_rate_flag & RX_FLAG_160MHZ) 438 rinfo->flags |= RATE_INFO_FLAGS_160_MHZ_WIDTH; 439 } 440 441 static void sta_set_sinfo(struct sta_info *sta, struct station_info *sinfo) 442 { 443 struct ieee80211_sub_if_data *sdata = sta->sdata; 444 struct ieee80211_local *local = sdata->local; 445 struct timespec uptime; 446 u64 packets = 0; 447 int ac; 448 449 sinfo->generation = sdata->local->sta_generation; 450 451 sinfo->filled = STATION_INFO_INACTIVE_TIME | 452 STATION_INFO_RX_BYTES64 | 453 STATION_INFO_TX_BYTES64 | 454 STATION_INFO_RX_PACKETS | 455 STATION_INFO_TX_PACKETS | 456 STATION_INFO_TX_RETRIES | 457 STATION_INFO_TX_FAILED | 458 STATION_INFO_TX_BITRATE | 459 STATION_INFO_RX_BITRATE | 460 STATION_INFO_RX_DROP_MISC | 461 STATION_INFO_BSS_PARAM | 462 STATION_INFO_CONNECTED_TIME | 463 STATION_INFO_STA_FLAGS | 464 STATION_INFO_BEACON_LOSS_COUNT; 465 466 do_posix_clock_monotonic_gettime(&uptime); 467 sinfo->connected_time = uptime.tv_sec - sta->last_connected; 468 469 sinfo->inactive_time = jiffies_to_msecs(jiffies - sta->last_rx); 470 sinfo->tx_bytes = 0; 471 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) { 472 sinfo->tx_bytes += sta->tx_bytes[ac]; 473 packets += sta->tx_packets[ac]; 474 } 475 sinfo->tx_packets = packets; 476 sinfo->rx_bytes = sta->rx_bytes; 477 sinfo->rx_packets = sta->rx_packets; 478 sinfo->tx_retries = sta->tx_retry_count; 479 sinfo->tx_failed = sta->tx_retry_failed; 480 sinfo->rx_dropped_misc = sta->rx_dropped; 481 sinfo->beacon_loss_count = sta->beacon_loss_count; 482 483 if ((sta->local->hw.flags & IEEE80211_HW_SIGNAL_DBM) || 484 (sta->local->hw.flags & IEEE80211_HW_SIGNAL_UNSPEC)) { 485 sinfo->filled |= STATION_INFO_SIGNAL | STATION_INFO_SIGNAL_AVG; 486 if (!local->ops->get_rssi || 487 drv_get_rssi(local, sdata, &sta->sta, &sinfo->signal)) 488 sinfo->signal = (s8)sta->last_signal; 489 sinfo->signal_avg = (s8) -ewma_read(&sta->avg_signal); 490 } 491 492 sta_set_rate_info_tx(sta, &sta->last_tx_rate, &sinfo->txrate); 493 sta_set_rate_info_rx(sta, &sinfo->rxrate); 494 495 if (ieee80211_vif_is_mesh(&sdata->vif)) { 496 #ifdef CONFIG_MAC80211_MESH 497 sinfo->filled |= STATION_INFO_LLID | 498 STATION_INFO_PLID | 499 STATION_INFO_PLINK_STATE | 500 STATION_INFO_LOCAL_PM | 501 STATION_INFO_PEER_PM | 502 STATION_INFO_NONPEER_PM; 503 504 sinfo->llid = le16_to_cpu(sta->llid); 505 sinfo->plid = le16_to_cpu(sta->plid); 506 sinfo->plink_state = sta->plink_state; 507 if (test_sta_flag(sta, WLAN_STA_TOFFSET_KNOWN)) { 508 sinfo->filled |= STATION_INFO_T_OFFSET; 509 sinfo->t_offset = sta->t_offset; 510 } 511 sinfo->local_pm = sta->local_pm; 512 sinfo->peer_pm = sta->peer_pm; 513 sinfo->nonpeer_pm = sta->nonpeer_pm; 514 #endif 515 } 516 517 sinfo->bss_param.flags = 0; 518 if (sdata->vif.bss_conf.use_cts_prot) 519 sinfo->bss_param.flags |= BSS_PARAM_FLAGS_CTS_PROT; 520 if (sdata->vif.bss_conf.use_short_preamble) 521 sinfo->bss_param.flags |= BSS_PARAM_FLAGS_SHORT_PREAMBLE; 522 if (sdata->vif.bss_conf.use_short_slot) 523 sinfo->bss_param.flags |= BSS_PARAM_FLAGS_SHORT_SLOT_TIME; 524 sinfo->bss_param.dtim_period = sdata->local->hw.conf.ps_dtim_period; 525 sinfo->bss_param.beacon_interval = sdata->vif.bss_conf.beacon_int; 526 527 sinfo->sta_flags.set = 0; 528 sinfo->sta_flags.mask = BIT(NL80211_STA_FLAG_AUTHORIZED) | 529 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) | 530 BIT(NL80211_STA_FLAG_WME) | 531 BIT(NL80211_STA_FLAG_MFP) | 532 BIT(NL80211_STA_FLAG_AUTHENTICATED) | 533 BIT(NL80211_STA_FLAG_ASSOCIATED) | 534 BIT(NL80211_STA_FLAG_TDLS_PEER); 535 if (test_sta_flag(sta, WLAN_STA_AUTHORIZED)) 536 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_AUTHORIZED); 537 if (test_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE)) 538 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_SHORT_PREAMBLE); 539 if (test_sta_flag(sta, WLAN_STA_WME)) 540 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_WME); 541 if (test_sta_flag(sta, WLAN_STA_MFP)) 542 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_MFP); 543 if (test_sta_flag(sta, WLAN_STA_AUTH)) 544 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_AUTHENTICATED); 545 if (test_sta_flag(sta, WLAN_STA_ASSOC)) 546 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_ASSOCIATED); 547 if (test_sta_flag(sta, WLAN_STA_TDLS_PEER)) 548 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_TDLS_PEER); 549 } 550 551 static const char ieee80211_gstrings_sta_stats[][ETH_GSTRING_LEN] = { 552 "rx_packets", "rx_bytes", "wep_weak_iv_count", 553 "rx_duplicates", "rx_fragments", "rx_dropped", 554 "tx_packets", "tx_bytes", "tx_fragments", 555 "tx_filtered", "tx_retry_failed", "tx_retries", 556 "beacon_loss", "sta_state", "txrate", "rxrate", "signal", 557 "channel", "noise", "ch_time", "ch_time_busy", 558 "ch_time_ext_busy", "ch_time_rx", "ch_time_tx" 559 }; 560 #define STA_STATS_LEN ARRAY_SIZE(ieee80211_gstrings_sta_stats) 561 562 static int ieee80211_get_et_sset_count(struct wiphy *wiphy, 563 struct net_device *dev, 564 int sset) 565 { 566 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 567 int rv = 0; 568 569 if (sset == ETH_SS_STATS) 570 rv += STA_STATS_LEN; 571 572 rv += drv_get_et_sset_count(sdata, sset); 573 574 if (rv == 0) 575 return -EOPNOTSUPP; 576 return rv; 577 } 578 579 static void ieee80211_get_et_stats(struct wiphy *wiphy, 580 struct net_device *dev, 581 struct ethtool_stats *stats, 582 u64 *data) 583 { 584 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 585 struct ieee80211_chanctx_conf *chanctx_conf; 586 struct ieee80211_channel *channel; 587 struct sta_info *sta; 588 struct ieee80211_local *local = sdata->local; 589 struct station_info sinfo; 590 struct survey_info survey; 591 int i, q; 592 #define STA_STATS_SURVEY_LEN 7 593 594 memset(data, 0, sizeof(u64) * STA_STATS_LEN); 595 596 #define ADD_STA_STATS(sta) \ 597 do { \ 598 data[i++] += sta->rx_packets; \ 599 data[i++] += sta->rx_bytes; \ 600 data[i++] += sta->wep_weak_iv_count; \ 601 data[i++] += sta->num_duplicates; \ 602 data[i++] += sta->rx_fragments; \ 603 data[i++] += sta->rx_dropped; \ 604 \ 605 data[i++] += sinfo.tx_packets; \ 606 data[i++] += sinfo.tx_bytes; \ 607 data[i++] += sta->tx_fragments; \ 608 data[i++] += sta->tx_filtered_count; \ 609 data[i++] += sta->tx_retry_failed; \ 610 data[i++] += sta->tx_retry_count; \ 611 data[i++] += sta->beacon_loss_count; \ 612 } while (0) 613 614 /* For Managed stations, find the single station based on BSSID 615 * and use that. For interface types, iterate through all available 616 * stations and add stats for any station that is assigned to this 617 * network device. 618 */ 619 620 mutex_lock(&local->sta_mtx); 621 622 if (sdata->vif.type == NL80211_IFTYPE_STATION) { 623 sta = sta_info_get_bss(sdata, sdata->u.mgd.bssid); 624 625 if (!(sta && !WARN_ON(sta->sdata->dev != dev))) 626 goto do_survey; 627 628 sinfo.filled = 0; 629 sta_set_sinfo(sta, &sinfo); 630 631 i = 0; 632 ADD_STA_STATS(sta); 633 634 data[i++] = sta->sta_state; 635 636 637 if (sinfo.filled & STATION_INFO_TX_BITRATE) 638 data[i] = 100000 * 639 cfg80211_calculate_bitrate(&sinfo.txrate); 640 i++; 641 if (sinfo.filled & STATION_INFO_RX_BITRATE) 642 data[i] = 100000 * 643 cfg80211_calculate_bitrate(&sinfo.rxrate); 644 i++; 645 646 if (sinfo.filled & STATION_INFO_SIGNAL_AVG) 647 data[i] = (u8)sinfo.signal_avg; 648 i++; 649 } else { 650 list_for_each_entry(sta, &local->sta_list, list) { 651 /* Make sure this station belongs to the proper dev */ 652 if (sta->sdata->dev != dev) 653 continue; 654 655 i = 0; 656 ADD_STA_STATS(sta); 657 } 658 } 659 660 do_survey: 661 i = STA_STATS_LEN - STA_STATS_SURVEY_LEN; 662 /* Get survey stats for current channel */ 663 survey.filled = 0; 664 665 rcu_read_lock(); 666 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); 667 if (chanctx_conf) 668 channel = chanctx_conf->def.chan; 669 else 670 channel = NULL; 671 rcu_read_unlock(); 672 673 if (channel) { 674 q = 0; 675 do { 676 survey.filled = 0; 677 if (drv_get_survey(local, q, &survey) != 0) { 678 survey.filled = 0; 679 break; 680 } 681 q++; 682 } while (channel != survey.channel); 683 } 684 685 if (survey.filled) 686 data[i++] = survey.channel->center_freq; 687 else 688 data[i++] = 0; 689 if (survey.filled & SURVEY_INFO_NOISE_DBM) 690 data[i++] = (u8)survey.noise; 691 else 692 data[i++] = -1LL; 693 if (survey.filled & SURVEY_INFO_CHANNEL_TIME) 694 data[i++] = survey.channel_time; 695 else 696 data[i++] = -1LL; 697 if (survey.filled & SURVEY_INFO_CHANNEL_TIME_BUSY) 698 data[i++] = survey.channel_time_busy; 699 else 700 data[i++] = -1LL; 701 if (survey.filled & SURVEY_INFO_CHANNEL_TIME_EXT_BUSY) 702 data[i++] = survey.channel_time_ext_busy; 703 else 704 data[i++] = -1LL; 705 if (survey.filled & SURVEY_INFO_CHANNEL_TIME_RX) 706 data[i++] = survey.channel_time_rx; 707 else 708 data[i++] = -1LL; 709 if (survey.filled & SURVEY_INFO_CHANNEL_TIME_TX) 710 data[i++] = survey.channel_time_tx; 711 else 712 data[i++] = -1LL; 713 714 mutex_unlock(&local->sta_mtx); 715 716 if (WARN_ON(i != STA_STATS_LEN)) 717 return; 718 719 drv_get_et_stats(sdata, stats, &(data[STA_STATS_LEN])); 720 } 721 722 static void ieee80211_get_et_strings(struct wiphy *wiphy, 723 struct net_device *dev, 724 u32 sset, u8 *data) 725 { 726 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 727 int sz_sta_stats = 0; 728 729 if (sset == ETH_SS_STATS) { 730 sz_sta_stats = sizeof(ieee80211_gstrings_sta_stats); 731 memcpy(data, *ieee80211_gstrings_sta_stats, sz_sta_stats); 732 } 733 drv_get_et_strings(sdata, sset, &(data[sz_sta_stats])); 734 } 735 736 static int ieee80211_dump_station(struct wiphy *wiphy, struct net_device *dev, 737 int idx, u8 *mac, struct station_info *sinfo) 738 { 739 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 740 struct ieee80211_local *local = sdata->local; 741 struct sta_info *sta; 742 int ret = -ENOENT; 743 744 mutex_lock(&local->sta_mtx); 745 746 sta = sta_info_get_by_idx(sdata, idx); 747 if (sta) { 748 ret = 0; 749 memcpy(mac, sta->sta.addr, ETH_ALEN); 750 sta_set_sinfo(sta, sinfo); 751 } 752 753 mutex_unlock(&local->sta_mtx); 754 755 return ret; 756 } 757 758 static int ieee80211_dump_survey(struct wiphy *wiphy, struct net_device *dev, 759 int idx, struct survey_info *survey) 760 { 761 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); 762 763 return drv_get_survey(local, idx, survey); 764 } 765 766 static int ieee80211_get_station(struct wiphy *wiphy, struct net_device *dev, 767 u8 *mac, struct station_info *sinfo) 768 { 769 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 770 struct ieee80211_local *local = sdata->local; 771 struct sta_info *sta; 772 int ret = -ENOENT; 773 774 mutex_lock(&local->sta_mtx); 775 776 sta = sta_info_get_bss(sdata, mac); 777 if (sta) { 778 ret = 0; 779 sta_set_sinfo(sta, sinfo); 780 } 781 782 mutex_unlock(&local->sta_mtx); 783 784 return ret; 785 } 786 787 static int ieee80211_set_monitor_channel(struct wiphy *wiphy, 788 struct cfg80211_chan_def *chandef) 789 { 790 struct ieee80211_local *local = wiphy_priv(wiphy); 791 struct ieee80211_sub_if_data *sdata; 792 int ret = 0; 793 794 if (cfg80211_chandef_identical(&local->monitor_chandef, chandef)) 795 return 0; 796 797 mutex_lock(&local->iflist_mtx); 798 if (local->use_chanctx) { 799 sdata = rcu_dereference_protected( 800 local->monitor_sdata, 801 lockdep_is_held(&local->iflist_mtx)); 802 if (sdata) { 803 ieee80211_vif_release_channel(sdata); 804 ret = ieee80211_vif_use_channel(sdata, chandef, 805 IEEE80211_CHANCTX_EXCLUSIVE); 806 } 807 } else if (local->open_count == local->monitors) { 808 local->_oper_chandef = *chandef; 809 ieee80211_hw_config(local, 0); 810 } 811 812 if (ret == 0) 813 local->monitor_chandef = *chandef; 814 mutex_unlock(&local->iflist_mtx); 815 816 return ret; 817 } 818 819 static int ieee80211_set_probe_resp(struct ieee80211_sub_if_data *sdata, 820 const u8 *resp, size_t resp_len) 821 { 822 struct probe_resp *new, *old; 823 824 if (!resp || !resp_len) 825 return 1; 826 827 old = rtnl_dereference(sdata->u.ap.probe_resp); 828 829 new = kzalloc(sizeof(struct probe_resp) + resp_len, GFP_KERNEL); 830 if (!new) 831 return -ENOMEM; 832 833 new->len = resp_len; 834 memcpy(new->data, resp, resp_len); 835 836 rcu_assign_pointer(sdata->u.ap.probe_resp, new); 837 if (old) 838 kfree_rcu(old, rcu_head); 839 840 return 0; 841 } 842 843 static int ieee80211_assign_beacon(struct ieee80211_sub_if_data *sdata, 844 struct cfg80211_beacon_data *params) 845 { 846 struct beacon_data *new, *old; 847 int new_head_len, new_tail_len; 848 int size, err; 849 u32 changed = BSS_CHANGED_BEACON; 850 851 old = rtnl_dereference(sdata->u.ap.beacon); 852 853 /* Need to have a beacon head if we don't have one yet */ 854 if (!params->head && !old) 855 return -EINVAL; 856 857 /* new or old head? */ 858 if (params->head) 859 new_head_len = params->head_len; 860 else 861 new_head_len = old->head_len; 862 863 /* new or old tail? */ 864 if (params->tail || !old) 865 /* params->tail_len will be zero for !params->tail */ 866 new_tail_len = params->tail_len; 867 else 868 new_tail_len = old->tail_len; 869 870 size = sizeof(*new) + new_head_len + new_tail_len; 871 872 new = kzalloc(size, GFP_KERNEL); 873 if (!new) 874 return -ENOMEM; 875 876 /* start filling the new info now */ 877 878 /* 879 * pointers go into the block we allocated, 880 * memory is | beacon_data | head | tail | 881 */ 882 new->head = ((u8 *) new) + sizeof(*new); 883 new->tail = new->head + new_head_len; 884 new->head_len = new_head_len; 885 new->tail_len = new_tail_len; 886 887 /* copy in head */ 888 if (params->head) 889 memcpy(new->head, params->head, new_head_len); 890 else 891 memcpy(new->head, old->head, new_head_len); 892 893 /* copy in optional tail */ 894 if (params->tail) 895 memcpy(new->tail, params->tail, new_tail_len); 896 else 897 if (old) 898 memcpy(new->tail, old->tail, new_tail_len); 899 900 err = ieee80211_set_probe_resp(sdata, params->probe_resp, 901 params->probe_resp_len); 902 if (err < 0) 903 return err; 904 if (err == 0) 905 changed |= BSS_CHANGED_AP_PROBE_RESP; 906 907 rcu_assign_pointer(sdata->u.ap.beacon, new); 908 909 if (old) 910 kfree_rcu(old, rcu_head); 911 912 return changed; 913 } 914 915 static int ieee80211_start_ap(struct wiphy *wiphy, struct net_device *dev, 916 struct cfg80211_ap_settings *params) 917 { 918 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 919 struct beacon_data *old; 920 struct ieee80211_sub_if_data *vlan; 921 u32 changed = BSS_CHANGED_BEACON_INT | 922 BSS_CHANGED_BEACON_ENABLED | 923 BSS_CHANGED_BEACON | 924 BSS_CHANGED_SSID | 925 BSS_CHANGED_P2P_PS; 926 int err; 927 928 old = rtnl_dereference(sdata->u.ap.beacon); 929 if (old) 930 return -EALREADY; 931 932 /* TODO: make hostapd tell us what it wants */ 933 sdata->smps_mode = IEEE80211_SMPS_OFF; 934 sdata->needed_rx_chains = sdata->local->rx_chains; 935 sdata->radar_required = params->radar_required; 936 937 err = ieee80211_vif_use_channel(sdata, ¶ms->chandef, 938 IEEE80211_CHANCTX_SHARED); 939 if (err) 940 return err; 941 ieee80211_vif_copy_chanctx_to_vlans(sdata, false); 942 943 /* 944 * Apply control port protocol, this allows us to 945 * not encrypt dynamic WEP control frames. 946 */ 947 sdata->control_port_protocol = params->crypto.control_port_ethertype; 948 sdata->control_port_no_encrypt = params->crypto.control_port_no_encrypt; 949 list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) { 950 vlan->control_port_protocol = 951 params->crypto.control_port_ethertype; 952 vlan->control_port_no_encrypt = 953 params->crypto.control_port_no_encrypt; 954 } 955 956 sdata->vif.bss_conf.beacon_int = params->beacon_interval; 957 sdata->vif.bss_conf.dtim_period = params->dtim_period; 958 sdata->vif.bss_conf.enable_beacon = true; 959 960 sdata->vif.bss_conf.ssid_len = params->ssid_len; 961 if (params->ssid_len) 962 memcpy(sdata->vif.bss_conf.ssid, params->ssid, 963 params->ssid_len); 964 sdata->vif.bss_conf.hidden_ssid = 965 (params->hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE); 966 967 memset(&sdata->vif.bss_conf.p2p_noa_attr, 0, 968 sizeof(sdata->vif.bss_conf.p2p_noa_attr)); 969 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow = 970 params->p2p_ctwindow & IEEE80211_P2P_OPPPS_CTWINDOW_MASK; 971 if (params->p2p_opp_ps) 972 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |= 973 IEEE80211_P2P_OPPPS_ENABLE_BIT; 974 975 err = ieee80211_assign_beacon(sdata, ¶ms->beacon); 976 if (err < 0) 977 return err; 978 changed |= err; 979 980 err = drv_start_ap(sdata->local, sdata); 981 if (err) { 982 old = rtnl_dereference(sdata->u.ap.beacon); 983 if (old) 984 kfree_rcu(old, rcu_head); 985 RCU_INIT_POINTER(sdata->u.ap.beacon, NULL); 986 return err; 987 } 988 989 ieee80211_bss_info_change_notify(sdata, changed); 990 991 netif_carrier_on(dev); 992 list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) 993 netif_carrier_on(vlan->dev); 994 995 return 0; 996 } 997 998 static int ieee80211_change_beacon(struct wiphy *wiphy, struct net_device *dev, 999 struct cfg80211_beacon_data *params) 1000 { 1001 struct ieee80211_sub_if_data *sdata; 1002 struct beacon_data *old; 1003 int err; 1004 1005 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1006 1007 old = rtnl_dereference(sdata->u.ap.beacon); 1008 if (!old) 1009 return -ENOENT; 1010 1011 err = ieee80211_assign_beacon(sdata, params); 1012 if (err < 0) 1013 return err; 1014 ieee80211_bss_info_change_notify(sdata, err); 1015 return 0; 1016 } 1017 1018 static int ieee80211_stop_ap(struct wiphy *wiphy, struct net_device *dev) 1019 { 1020 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1021 struct ieee80211_sub_if_data *vlan; 1022 struct ieee80211_local *local = sdata->local; 1023 struct beacon_data *old_beacon; 1024 struct probe_resp *old_probe_resp; 1025 1026 old_beacon = rtnl_dereference(sdata->u.ap.beacon); 1027 if (!old_beacon) 1028 return -ENOENT; 1029 old_probe_resp = rtnl_dereference(sdata->u.ap.probe_resp); 1030 1031 /* turn off carrier for this interface and dependent VLANs */ 1032 list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) 1033 netif_carrier_off(vlan->dev); 1034 netif_carrier_off(dev); 1035 1036 /* remove beacon and probe response */ 1037 RCU_INIT_POINTER(sdata->u.ap.beacon, NULL); 1038 RCU_INIT_POINTER(sdata->u.ap.probe_resp, NULL); 1039 kfree_rcu(old_beacon, rcu_head); 1040 if (old_probe_resp) 1041 kfree_rcu(old_probe_resp, rcu_head); 1042 1043 list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) 1044 sta_info_flush_defer(vlan); 1045 sta_info_flush_defer(sdata); 1046 synchronize_net(); 1047 rcu_barrier(); 1048 list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) { 1049 sta_info_flush_cleanup(vlan); 1050 ieee80211_free_keys(vlan); 1051 } 1052 sta_info_flush_cleanup(sdata); 1053 ieee80211_free_keys(sdata); 1054 1055 sdata->vif.bss_conf.enable_beacon = false; 1056 sdata->vif.bss_conf.ssid_len = 0; 1057 clear_bit(SDATA_STATE_OFFCHANNEL_BEACON_STOPPED, &sdata->state); 1058 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED); 1059 1060 if (sdata->wdev.cac_started) { 1061 cancel_delayed_work_sync(&sdata->dfs_cac_timer_work); 1062 cfg80211_cac_event(sdata->dev, NL80211_RADAR_CAC_ABORTED, 1063 GFP_KERNEL); 1064 } 1065 1066 drv_stop_ap(sdata->local, sdata); 1067 1068 /* free all potentially still buffered bcast frames */ 1069 local->total_ps_buffered -= skb_queue_len(&sdata->u.ap.ps.bc_buf); 1070 skb_queue_purge(&sdata->u.ap.ps.bc_buf); 1071 1072 ieee80211_vif_copy_chanctx_to_vlans(sdata, true); 1073 ieee80211_vif_release_channel(sdata); 1074 1075 return 0; 1076 } 1077 1078 /* Layer 2 Update frame (802.2 Type 1 LLC XID Update response) */ 1079 struct iapp_layer2_update { 1080 u8 da[ETH_ALEN]; /* broadcast */ 1081 u8 sa[ETH_ALEN]; /* STA addr */ 1082 __be16 len; /* 6 */ 1083 u8 dsap; /* 0 */ 1084 u8 ssap; /* 0 */ 1085 u8 control; 1086 u8 xid_info[3]; 1087 } __packed; 1088 1089 static void ieee80211_send_layer2_update(struct sta_info *sta) 1090 { 1091 struct iapp_layer2_update *msg; 1092 struct sk_buff *skb; 1093 1094 /* Send Level 2 Update Frame to update forwarding tables in layer 2 1095 * bridge devices */ 1096 1097 skb = dev_alloc_skb(sizeof(*msg)); 1098 if (!skb) 1099 return; 1100 msg = (struct iapp_layer2_update *)skb_put(skb, sizeof(*msg)); 1101 1102 /* 802.2 Type 1 Logical Link Control (LLC) Exchange Identifier (XID) 1103 * Update response frame; IEEE Std 802.2-1998, 5.4.1.2.1 */ 1104 1105 eth_broadcast_addr(msg->da); 1106 memcpy(msg->sa, sta->sta.addr, ETH_ALEN); 1107 msg->len = htons(6); 1108 msg->dsap = 0; 1109 msg->ssap = 0x01; /* NULL LSAP, CR Bit: Response */ 1110 msg->control = 0xaf; /* XID response lsb.1111F101. 1111 * F=0 (no poll command; unsolicited frame) */ 1112 msg->xid_info[0] = 0x81; /* XID format identifier */ 1113 msg->xid_info[1] = 1; /* LLC types/classes: Type 1 LLC */ 1114 msg->xid_info[2] = 0; /* XID sender's receive window size (RW) */ 1115 1116 skb->dev = sta->sdata->dev; 1117 skb->protocol = eth_type_trans(skb, sta->sdata->dev); 1118 memset(skb->cb, 0, sizeof(skb->cb)); 1119 netif_rx_ni(skb); 1120 } 1121 1122 static int sta_apply_auth_flags(struct ieee80211_local *local, 1123 struct sta_info *sta, 1124 u32 mask, u32 set) 1125 { 1126 int ret; 1127 1128 if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED) && 1129 set & BIT(NL80211_STA_FLAG_AUTHENTICATED) && 1130 !test_sta_flag(sta, WLAN_STA_AUTH)) { 1131 ret = sta_info_move_state(sta, IEEE80211_STA_AUTH); 1132 if (ret) 1133 return ret; 1134 } 1135 1136 if (mask & BIT(NL80211_STA_FLAG_ASSOCIATED) && 1137 set & BIT(NL80211_STA_FLAG_ASSOCIATED) && 1138 !test_sta_flag(sta, WLAN_STA_ASSOC)) { 1139 ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC); 1140 if (ret) 1141 return ret; 1142 } 1143 1144 if (mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) { 1145 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED)) 1146 ret = sta_info_move_state(sta, IEEE80211_STA_AUTHORIZED); 1147 else if (test_sta_flag(sta, WLAN_STA_AUTHORIZED)) 1148 ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC); 1149 else 1150 ret = 0; 1151 if (ret) 1152 return ret; 1153 } 1154 1155 if (mask & BIT(NL80211_STA_FLAG_ASSOCIATED) && 1156 !(set & BIT(NL80211_STA_FLAG_ASSOCIATED)) && 1157 test_sta_flag(sta, WLAN_STA_ASSOC)) { 1158 ret = sta_info_move_state(sta, IEEE80211_STA_AUTH); 1159 if (ret) 1160 return ret; 1161 } 1162 1163 if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED) && 1164 !(set & BIT(NL80211_STA_FLAG_AUTHENTICATED)) && 1165 test_sta_flag(sta, WLAN_STA_AUTH)) { 1166 ret = sta_info_move_state(sta, IEEE80211_STA_NONE); 1167 if (ret) 1168 return ret; 1169 } 1170 1171 return 0; 1172 } 1173 1174 static int sta_apply_parameters(struct ieee80211_local *local, 1175 struct sta_info *sta, 1176 struct station_parameters *params) 1177 { 1178 int ret = 0; 1179 u32 rates; 1180 int i, j; 1181 struct ieee80211_supported_band *sband; 1182 struct ieee80211_sub_if_data *sdata = sta->sdata; 1183 enum ieee80211_band band = ieee80211_get_sdata_band(sdata); 1184 u32 mask, set; 1185 1186 sband = local->hw.wiphy->bands[band]; 1187 1188 mask = params->sta_flags_mask; 1189 set = params->sta_flags_set; 1190 1191 if (ieee80211_vif_is_mesh(&sdata->vif)) { 1192 /* 1193 * In mesh mode, ASSOCIATED isn't part of the nl80211 1194 * API but must follow AUTHENTICATED for driver state. 1195 */ 1196 if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED)) 1197 mask |= BIT(NL80211_STA_FLAG_ASSOCIATED); 1198 if (set & BIT(NL80211_STA_FLAG_AUTHENTICATED)) 1199 set |= BIT(NL80211_STA_FLAG_ASSOCIATED); 1200 } else if (test_sta_flag(sta, WLAN_STA_TDLS_PEER)) { 1201 /* 1202 * TDLS -- everything follows authorized, but 1203 * only becoming authorized is possible, not 1204 * going back 1205 */ 1206 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED)) { 1207 set |= BIT(NL80211_STA_FLAG_AUTHENTICATED) | 1208 BIT(NL80211_STA_FLAG_ASSOCIATED); 1209 mask |= BIT(NL80211_STA_FLAG_AUTHENTICATED) | 1210 BIT(NL80211_STA_FLAG_ASSOCIATED); 1211 } 1212 } 1213 1214 ret = sta_apply_auth_flags(local, sta, mask, set); 1215 if (ret) 1216 return ret; 1217 1218 if (mask & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE)) { 1219 if (set & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE)) 1220 set_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE); 1221 else 1222 clear_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE); 1223 } 1224 1225 if (mask & BIT(NL80211_STA_FLAG_WME)) { 1226 if (set & BIT(NL80211_STA_FLAG_WME)) { 1227 set_sta_flag(sta, WLAN_STA_WME); 1228 sta->sta.wme = true; 1229 } else { 1230 clear_sta_flag(sta, WLAN_STA_WME); 1231 sta->sta.wme = false; 1232 } 1233 } 1234 1235 if (mask & BIT(NL80211_STA_FLAG_MFP)) { 1236 if (set & BIT(NL80211_STA_FLAG_MFP)) 1237 set_sta_flag(sta, WLAN_STA_MFP); 1238 else 1239 clear_sta_flag(sta, WLAN_STA_MFP); 1240 } 1241 1242 if (mask & BIT(NL80211_STA_FLAG_TDLS_PEER)) { 1243 if (set & BIT(NL80211_STA_FLAG_TDLS_PEER)) 1244 set_sta_flag(sta, WLAN_STA_TDLS_PEER); 1245 else 1246 clear_sta_flag(sta, WLAN_STA_TDLS_PEER); 1247 } 1248 1249 if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD) { 1250 sta->sta.uapsd_queues = params->uapsd_queues; 1251 sta->sta.max_sp = params->max_sp; 1252 } 1253 1254 /* 1255 * cfg80211 validates this (1-2007) and allows setting the AID 1256 * only when creating a new station entry 1257 */ 1258 if (params->aid) 1259 sta->sta.aid = params->aid; 1260 1261 /* 1262 * Some of the following updates would be racy if called on an 1263 * existing station, via ieee80211_change_station(). However, 1264 * all such changes are rejected by cfg80211 except for updates 1265 * changing the supported rates on an existing but not yet used 1266 * TDLS peer. 1267 */ 1268 1269 if (params->listen_interval >= 0) 1270 sta->listen_interval = params->listen_interval; 1271 1272 if (params->supported_rates) { 1273 rates = 0; 1274 1275 for (i = 0; i < params->supported_rates_len; i++) { 1276 int rate = (params->supported_rates[i] & 0x7f) * 5; 1277 for (j = 0; j < sband->n_bitrates; j++) { 1278 if (sband->bitrates[j].bitrate == rate) 1279 rates |= BIT(j); 1280 } 1281 } 1282 sta->sta.supp_rates[band] = rates; 1283 } 1284 1285 if (params->ht_capa) 1286 ieee80211_ht_cap_ie_to_sta_ht_cap(sdata, sband, 1287 params->ht_capa, sta); 1288 1289 if (params->vht_capa) 1290 ieee80211_vht_cap_ie_to_sta_vht_cap(sdata, sband, 1291 params->vht_capa, sta); 1292 1293 if (ieee80211_vif_is_mesh(&sdata->vif)) { 1294 #ifdef CONFIG_MAC80211_MESH 1295 u32 changed = 0; 1296 1297 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE) { 1298 switch (params->plink_state) { 1299 case NL80211_PLINK_ESTAB: 1300 if (sta->plink_state != NL80211_PLINK_ESTAB) 1301 changed = mesh_plink_inc_estab_count( 1302 sdata); 1303 sta->plink_state = params->plink_state; 1304 1305 ieee80211_mps_sta_status_update(sta); 1306 changed |= ieee80211_mps_set_sta_local_pm(sta, 1307 sdata->u.mesh.mshcfg.power_mode); 1308 break; 1309 case NL80211_PLINK_LISTEN: 1310 case NL80211_PLINK_BLOCKED: 1311 case NL80211_PLINK_OPN_SNT: 1312 case NL80211_PLINK_OPN_RCVD: 1313 case NL80211_PLINK_CNF_RCVD: 1314 case NL80211_PLINK_HOLDING: 1315 if (sta->plink_state == NL80211_PLINK_ESTAB) 1316 changed = mesh_plink_dec_estab_count( 1317 sdata); 1318 sta->plink_state = params->plink_state; 1319 1320 ieee80211_mps_sta_status_update(sta); 1321 changed |= 1322 ieee80211_mps_local_status_update(sdata); 1323 break; 1324 default: 1325 /* nothing */ 1326 break; 1327 } 1328 } 1329 1330 switch (params->plink_action) { 1331 case NL80211_PLINK_ACTION_NO_ACTION: 1332 /* nothing */ 1333 break; 1334 case NL80211_PLINK_ACTION_OPEN: 1335 changed |= mesh_plink_open(sta); 1336 break; 1337 case NL80211_PLINK_ACTION_BLOCK: 1338 changed |= mesh_plink_block(sta); 1339 break; 1340 } 1341 1342 if (params->local_pm) 1343 changed |= 1344 ieee80211_mps_set_sta_local_pm(sta, 1345 params->local_pm); 1346 ieee80211_bss_info_change_notify(sdata, changed); 1347 #endif 1348 } 1349 1350 return 0; 1351 } 1352 1353 static int ieee80211_add_station(struct wiphy *wiphy, struct net_device *dev, 1354 u8 *mac, struct station_parameters *params) 1355 { 1356 struct ieee80211_local *local = wiphy_priv(wiphy); 1357 struct sta_info *sta; 1358 struct ieee80211_sub_if_data *sdata; 1359 int err; 1360 int layer2_update; 1361 1362 if (params->vlan) { 1363 sdata = IEEE80211_DEV_TO_SUB_IF(params->vlan); 1364 1365 if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN && 1366 sdata->vif.type != NL80211_IFTYPE_AP) 1367 return -EINVAL; 1368 } else 1369 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1370 1371 if (ether_addr_equal(mac, sdata->vif.addr)) 1372 return -EINVAL; 1373 1374 if (is_multicast_ether_addr(mac)) 1375 return -EINVAL; 1376 1377 sta = sta_info_alloc(sdata, mac, GFP_KERNEL); 1378 if (!sta) 1379 return -ENOMEM; 1380 1381 /* 1382 * defaults -- if userspace wants something else we'll 1383 * change it accordingly in sta_apply_parameters() 1384 */ 1385 if (!(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))) { 1386 sta_info_pre_move_state(sta, IEEE80211_STA_AUTH); 1387 sta_info_pre_move_state(sta, IEEE80211_STA_ASSOC); 1388 } 1389 1390 err = sta_apply_parameters(local, sta, params); 1391 if (err) { 1392 sta_info_free(local, sta); 1393 return err; 1394 } 1395 1396 /* 1397 * for TDLS, rate control should be initialized only when 1398 * rates are known and station is marked authorized 1399 */ 1400 if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER)) 1401 rate_control_rate_init(sta); 1402 1403 layer2_update = sdata->vif.type == NL80211_IFTYPE_AP_VLAN || 1404 sdata->vif.type == NL80211_IFTYPE_AP; 1405 1406 err = sta_info_insert_rcu(sta); 1407 if (err) { 1408 rcu_read_unlock(); 1409 return err; 1410 } 1411 1412 if (layer2_update) 1413 ieee80211_send_layer2_update(sta); 1414 1415 rcu_read_unlock(); 1416 1417 return 0; 1418 } 1419 1420 static int ieee80211_del_station(struct wiphy *wiphy, struct net_device *dev, 1421 u8 *mac) 1422 { 1423 struct ieee80211_sub_if_data *sdata; 1424 1425 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1426 1427 if (mac) 1428 return sta_info_destroy_addr_bss(sdata, mac); 1429 1430 sta_info_flush(sdata); 1431 return 0; 1432 } 1433 1434 static int ieee80211_change_station(struct wiphy *wiphy, 1435 struct net_device *dev, u8 *mac, 1436 struct station_parameters *params) 1437 { 1438 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1439 struct ieee80211_local *local = wiphy_priv(wiphy); 1440 struct sta_info *sta; 1441 struct ieee80211_sub_if_data *vlansdata; 1442 enum cfg80211_station_type statype; 1443 int err; 1444 1445 mutex_lock(&local->sta_mtx); 1446 1447 sta = sta_info_get_bss(sdata, mac); 1448 if (!sta) { 1449 err = -ENOENT; 1450 goto out_err; 1451 } 1452 1453 switch (sdata->vif.type) { 1454 case NL80211_IFTYPE_MESH_POINT: 1455 if (sdata->u.mesh.user_mpm) 1456 statype = CFG80211_STA_MESH_PEER_USER; 1457 else 1458 statype = CFG80211_STA_MESH_PEER_KERNEL; 1459 break; 1460 case NL80211_IFTYPE_ADHOC: 1461 statype = CFG80211_STA_IBSS; 1462 break; 1463 case NL80211_IFTYPE_STATION: 1464 if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER)) { 1465 statype = CFG80211_STA_AP_STA; 1466 break; 1467 } 1468 if (test_sta_flag(sta, WLAN_STA_AUTHORIZED)) 1469 statype = CFG80211_STA_TDLS_PEER_ACTIVE; 1470 else 1471 statype = CFG80211_STA_TDLS_PEER_SETUP; 1472 break; 1473 case NL80211_IFTYPE_AP: 1474 case NL80211_IFTYPE_AP_VLAN: 1475 statype = CFG80211_STA_AP_CLIENT; 1476 break; 1477 default: 1478 err = -EOPNOTSUPP; 1479 goto out_err; 1480 } 1481 1482 err = cfg80211_check_station_change(wiphy, params, statype); 1483 if (err) 1484 goto out_err; 1485 1486 if (params->vlan && params->vlan != sta->sdata->dev) { 1487 bool prev_4addr = false; 1488 bool new_4addr = false; 1489 1490 vlansdata = IEEE80211_DEV_TO_SUB_IF(params->vlan); 1491 1492 if (params->vlan->ieee80211_ptr->use_4addr) { 1493 if (vlansdata->u.vlan.sta) { 1494 err = -EBUSY; 1495 goto out_err; 1496 } 1497 1498 rcu_assign_pointer(vlansdata->u.vlan.sta, sta); 1499 new_4addr = true; 1500 } 1501 1502 if (sta->sdata->vif.type == NL80211_IFTYPE_AP_VLAN && 1503 sta->sdata->u.vlan.sta) { 1504 rcu_assign_pointer(sta->sdata->u.vlan.sta, NULL); 1505 prev_4addr = true; 1506 } 1507 1508 sta->sdata = vlansdata; 1509 1510 if (sta->sta_state == IEEE80211_STA_AUTHORIZED && 1511 prev_4addr != new_4addr) { 1512 if (new_4addr) 1513 atomic_dec(&sta->sdata->bss->num_mcast_sta); 1514 else 1515 atomic_inc(&sta->sdata->bss->num_mcast_sta); 1516 } 1517 1518 ieee80211_send_layer2_update(sta); 1519 } 1520 1521 err = sta_apply_parameters(local, sta, params); 1522 if (err) 1523 goto out_err; 1524 1525 /* When peer becomes authorized, init rate control as well */ 1526 if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) && 1527 test_sta_flag(sta, WLAN_STA_AUTHORIZED)) 1528 rate_control_rate_init(sta); 1529 1530 mutex_unlock(&local->sta_mtx); 1531 1532 if (sdata->vif.type == NL80211_IFTYPE_STATION && 1533 params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) { 1534 ieee80211_recalc_ps(local, -1); 1535 ieee80211_recalc_ps_vif(sdata); 1536 } 1537 1538 return 0; 1539 out_err: 1540 mutex_unlock(&local->sta_mtx); 1541 return err; 1542 } 1543 1544 #ifdef CONFIG_MAC80211_MESH 1545 static int ieee80211_add_mpath(struct wiphy *wiphy, struct net_device *dev, 1546 u8 *dst, u8 *next_hop) 1547 { 1548 struct ieee80211_sub_if_data *sdata; 1549 struct mesh_path *mpath; 1550 struct sta_info *sta; 1551 1552 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1553 1554 rcu_read_lock(); 1555 sta = sta_info_get(sdata, next_hop); 1556 if (!sta) { 1557 rcu_read_unlock(); 1558 return -ENOENT; 1559 } 1560 1561 mpath = mesh_path_add(sdata, dst); 1562 if (IS_ERR(mpath)) { 1563 rcu_read_unlock(); 1564 return PTR_ERR(mpath); 1565 } 1566 1567 mesh_path_fix_nexthop(mpath, sta); 1568 1569 rcu_read_unlock(); 1570 return 0; 1571 } 1572 1573 static int ieee80211_del_mpath(struct wiphy *wiphy, struct net_device *dev, 1574 u8 *dst) 1575 { 1576 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1577 1578 if (dst) 1579 return mesh_path_del(sdata, dst); 1580 1581 mesh_path_flush_by_iface(sdata); 1582 return 0; 1583 } 1584 1585 static int ieee80211_change_mpath(struct wiphy *wiphy, 1586 struct net_device *dev, 1587 u8 *dst, u8 *next_hop) 1588 { 1589 struct ieee80211_sub_if_data *sdata; 1590 struct mesh_path *mpath; 1591 struct sta_info *sta; 1592 1593 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1594 1595 rcu_read_lock(); 1596 1597 sta = sta_info_get(sdata, next_hop); 1598 if (!sta) { 1599 rcu_read_unlock(); 1600 return -ENOENT; 1601 } 1602 1603 mpath = mesh_path_lookup(sdata, dst); 1604 if (!mpath) { 1605 rcu_read_unlock(); 1606 return -ENOENT; 1607 } 1608 1609 mesh_path_fix_nexthop(mpath, sta); 1610 1611 rcu_read_unlock(); 1612 return 0; 1613 } 1614 1615 static void mpath_set_pinfo(struct mesh_path *mpath, u8 *next_hop, 1616 struct mpath_info *pinfo) 1617 { 1618 struct sta_info *next_hop_sta = rcu_dereference(mpath->next_hop); 1619 1620 if (next_hop_sta) 1621 memcpy(next_hop, next_hop_sta->sta.addr, ETH_ALEN); 1622 else 1623 memset(next_hop, 0, ETH_ALEN); 1624 1625 memset(pinfo, 0, sizeof(*pinfo)); 1626 1627 pinfo->generation = mesh_paths_generation; 1628 1629 pinfo->filled = MPATH_INFO_FRAME_QLEN | 1630 MPATH_INFO_SN | 1631 MPATH_INFO_METRIC | 1632 MPATH_INFO_EXPTIME | 1633 MPATH_INFO_DISCOVERY_TIMEOUT | 1634 MPATH_INFO_DISCOVERY_RETRIES | 1635 MPATH_INFO_FLAGS; 1636 1637 pinfo->frame_qlen = mpath->frame_queue.qlen; 1638 pinfo->sn = mpath->sn; 1639 pinfo->metric = mpath->metric; 1640 if (time_before(jiffies, mpath->exp_time)) 1641 pinfo->exptime = jiffies_to_msecs(mpath->exp_time - jiffies); 1642 pinfo->discovery_timeout = 1643 jiffies_to_msecs(mpath->discovery_timeout); 1644 pinfo->discovery_retries = mpath->discovery_retries; 1645 if (mpath->flags & MESH_PATH_ACTIVE) 1646 pinfo->flags |= NL80211_MPATH_FLAG_ACTIVE; 1647 if (mpath->flags & MESH_PATH_RESOLVING) 1648 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING; 1649 if (mpath->flags & MESH_PATH_SN_VALID) 1650 pinfo->flags |= NL80211_MPATH_FLAG_SN_VALID; 1651 if (mpath->flags & MESH_PATH_FIXED) 1652 pinfo->flags |= NL80211_MPATH_FLAG_FIXED; 1653 if (mpath->flags & MESH_PATH_RESOLVED) 1654 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVED; 1655 } 1656 1657 static int ieee80211_get_mpath(struct wiphy *wiphy, struct net_device *dev, 1658 u8 *dst, u8 *next_hop, struct mpath_info *pinfo) 1659 1660 { 1661 struct ieee80211_sub_if_data *sdata; 1662 struct mesh_path *mpath; 1663 1664 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1665 1666 rcu_read_lock(); 1667 mpath = mesh_path_lookup(sdata, dst); 1668 if (!mpath) { 1669 rcu_read_unlock(); 1670 return -ENOENT; 1671 } 1672 memcpy(dst, mpath->dst, ETH_ALEN); 1673 mpath_set_pinfo(mpath, next_hop, pinfo); 1674 rcu_read_unlock(); 1675 return 0; 1676 } 1677 1678 static int ieee80211_dump_mpath(struct wiphy *wiphy, struct net_device *dev, 1679 int idx, u8 *dst, u8 *next_hop, 1680 struct mpath_info *pinfo) 1681 { 1682 struct ieee80211_sub_if_data *sdata; 1683 struct mesh_path *mpath; 1684 1685 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1686 1687 rcu_read_lock(); 1688 mpath = mesh_path_lookup_by_idx(sdata, idx); 1689 if (!mpath) { 1690 rcu_read_unlock(); 1691 return -ENOENT; 1692 } 1693 memcpy(dst, mpath->dst, ETH_ALEN); 1694 mpath_set_pinfo(mpath, next_hop, pinfo); 1695 rcu_read_unlock(); 1696 return 0; 1697 } 1698 1699 static int ieee80211_get_mesh_config(struct wiphy *wiphy, 1700 struct net_device *dev, 1701 struct mesh_config *conf) 1702 { 1703 struct ieee80211_sub_if_data *sdata; 1704 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1705 1706 memcpy(conf, &(sdata->u.mesh.mshcfg), sizeof(struct mesh_config)); 1707 return 0; 1708 } 1709 1710 static inline bool _chg_mesh_attr(enum nl80211_meshconf_params parm, u32 mask) 1711 { 1712 return (mask >> (parm-1)) & 0x1; 1713 } 1714 1715 static int copy_mesh_setup(struct ieee80211_if_mesh *ifmsh, 1716 const struct mesh_setup *setup) 1717 { 1718 u8 *new_ie; 1719 const u8 *old_ie; 1720 struct ieee80211_sub_if_data *sdata = container_of(ifmsh, 1721 struct ieee80211_sub_if_data, u.mesh); 1722 1723 /* allocate information elements */ 1724 new_ie = NULL; 1725 old_ie = ifmsh->ie; 1726 1727 if (setup->ie_len) { 1728 new_ie = kmemdup(setup->ie, setup->ie_len, 1729 GFP_KERNEL); 1730 if (!new_ie) 1731 return -ENOMEM; 1732 } 1733 ifmsh->ie_len = setup->ie_len; 1734 ifmsh->ie = new_ie; 1735 kfree(old_ie); 1736 1737 /* now copy the rest of the setup parameters */ 1738 ifmsh->mesh_id_len = setup->mesh_id_len; 1739 memcpy(ifmsh->mesh_id, setup->mesh_id, ifmsh->mesh_id_len); 1740 ifmsh->mesh_sp_id = setup->sync_method; 1741 ifmsh->mesh_pp_id = setup->path_sel_proto; 1742 ifmsh->mesh_pm_id = setup->path_metric; 1743 ifmsh->user_mpm = setup->user_mpm; 1744 ifmsh->security = IEEE80211_MESH_SEC_NONE; 1745 if (setup->is_authenticated) 1746 ifmsh->security |= IEEE80211_MESH_SEC_AUTHED; 1747 if (setup->is_secure) 1748 ifmsh->security |= IEEE80211_MESH_SEC_SECURED; 1749 1750 /* mcast rate setting in Mesh Node */ 1751 memcpy(sdata->vif.bss_conf.mcast_rate, setup->mcast_rate, 1752 sizeof(setup->mcast_rate)); 1753 1754 sdata->vif.bss_conf.beacon_int = setup->beacon_interval; 1755 sdata->vif.bss_conf.dtim_period = setup->dtim_period; 1756 1757 return 0; 1758 } 1759 1760 static int ieee80211_update_mesh_config(struct wiphy *wiphy, 1761 struct net_device *dev, u32 mask, 1762 const struct mesh_config *nconf) 1763 { 1764 struct mesh_config *conf; 1765 struct ieee80211_sub_if_data *sdata; 1766 struct ieee80211_if_mesh *ifmsh; 1767 1768 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1769 ifmsh = &sdata->u.mesh; 1770 1771 /* Set the config options which we are interested in setting */ 1772 conf = &(sdata->u.mesh.mshcfg); 1773 if (_chg_mesh_attr(NL80211_MESHCONF_RETRY_TIMEOUT, mask)) 1774 conf->dot11MeshRetryTimeout = nconf->dot11MeshRetryTimeout; 1775 if (_chg_mesh_attr(NL80211_MESHCONF_CONFIRM_TIMEOUT, mask)) 1776 conf->dot11MeshConfirmTimeout = nconf->dot11MeshConfirmTimeout; 1777 if (_chg_mesh_attr(NL80211_MESHCONF_HOLDING_TIMEOUT, mask)) 1778 conf->dot11MeshHoldingTimeout = nconf->dot11MeshHoldingTimeout; 1779 if (_chg_mesh_attr(NL80211_MESHCONF_MAX_PEER_LINKS, mask)) 1780 conf->dot11MeshMaxPeerLinks = nconf->dot11MeshMaxPeerLinks; 1781 if (_chg_mesh_attr(NL80211_MESHCONF_MAX_RETRIES, mask)) 1782 conf->dot11MeshMaxRetries = nconf->dot11MeshMaxRetries; 1783 if (_chg_mesh_attr(NL80211_MESHCONF_TTL, mask)) 1784 conf->dot11MeshTTL = nconf->dot11MeshTTL; 1785 if (_chg_mesh_attr(NL80211_MESHCONF_ELEMENT_TTL, mask)) 1786 conf->element_ttl = nconf->element_ttl; 1787 if (_chg_mesh_attr(NL80211_MESHCONF_AUTO_OPEN_PLINKS, mask)) { 1788 if (ifmsh->user_mpm) 1789 return -EBUSY; 1790 conf->auto_open_plinks = nconf->auto_open_plinks; 1791 } 1792 if (_chg_mesh_attr(NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR, mask)) 1793 conf->dot11MeshNbrOffsetMaxNeighbor = 1794 nconf->dot11MeshNbrOffsetMaxNeighbor; 1795 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES, mask)) 1796 conf->dot11MeshHWMPmaxPREQretries = 1797 nconf->dot11MeshHWMPmaxPREQretries; 1798 if (_chg_mesh_attr(NL80211_MESHCONF_PATH_REFRESH_TIME, mask)) 1799 conf->path_refresh_time = nconf->path_refresh_time; 1800 if (_chg_mesh_attr(NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT, mask)) 1801 conf->min_discovery_timeout = nconf->min_discovery_timeout; 1802 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT, mask)) 1803 conf->dot11MeshHWMPactivePathTimeout = 1804 nconf->dot11MeshHWMPactivePathTimeout; 1805 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL, mask)) 1806 conf->dot11MeshHWMPpreqMinInterval = 1807 nconf->dot11MeshHWMPpreqMinInterval; 1808 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL, mask)) 1809 conf->dot11MeshHWMPperrMinInterval = 1810 nconf->dot11MeshHWMPperrMinInterval; 1811 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME, 1812 mask)) 1813 conf->dot11MeshHWMPnetDiameterTraversalTime = 1814 nconf->dot11MeshHWMPnetDiameterTraversalTime; 1815 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOTMODE, mask)) { 1816 conf->dot11MeshHWMPRootMode = nconf->dot11MeshHWMPRootMode; 1817 ieee80211_mesh_root_setup(ifmsh); 1818 } 1819 if (_chg_mesh_attr(NL80211_MESHCONF_GATE_ANNOUNCEMENTS, mask)) { 1820 /* our current gate announcement implementation rides on root 1821 * announcements, so require this ifmsh to also be a root node 1822 * */ 1823 if (nconf->dot11MeshGateAnnouncementProtocol && 1824 !(conf->dot11MeshHWMPRootMode > IEEE80211_ROOTMODE_ROOT)) { 1825 conf->dot11MeshHWMPRootMode = IEEE80211_PROACTIVE_RANN; 1826 ieee80211_mesh_root_setup(ifmsh); 1827 } 1828 conf->dot11MeshGateAnnouncementProtocol = 1829 nconf->dot11MeshGateAnnouncementProtocol; 1830 } 1831 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_RANN_INTERVAL, mask)) 1832 conf->dot11MeshHWMPRannInterval = 1833 nconf->dot11MeshHWMPRannInterval; 1834 if (_chg_mesh_attr(NL80211_MESHCONF_FORWARDING, mask)) 1835 conf->dot11MeshForwarding = nconf->dot11MeshForwarding; 1836 if (_chg_mesh_attr(NL80211_MESHCONF_RSSI_THRESHOLD, mask)) { 1837 /* our RSSI threshold implementation is supported only for 1838 * devices that report signal in dBm. 1839 */ 1840 if (!(sdata->local->hw.flags & IEEE80211_HW_SIGNAL_DBM)) 1841 return -ENOTSUPP; 1842 conf->rssi_threshold = nconf->rssi_threshold; 1843 } 1844 if (_chg_mesh_attr(NL80211_MESHCONF_HT_OPMODE, mask)) { 1845 conf->ht_opmode = nconf->ht_opmode; 1846 sdata->vif.bss_conf.ht_operation_mode = nconf->ht_opmode; 1847 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_HT); 1848 } 1849 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT, mask)) 1850 conf->dot11MeshHWMPactivePathToRootTimeout = 1851 nconf->dot11MeshHWMPactivePathToRootTimeout; 1852 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOT_INTERVAL, mask)) 1853 conf->dot11MeshHWMProotInterval = 1854 nconf->dot11MeshHWMProotInterval; 1855 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL, mask)) 1856 conf->dot11MeshHWMPconfirmationInterval = 1857 nconf->dot11MeshHWMPconfirmationInterval; 1858 if (_chg_mesh_attr(NL80211_MESHCONF_POWER_MODE, mask)) { 1859 conf->power_mode = nconf->power_mode; 1860 ieee80211_mps_local_status_update(sdata); 1861 } 1862 if (_chg_mesh_attr(NL80211_MESHCONF_AWAKE_WINDOW, mask)) 1863 conf->dot11MeshAwakeWindowDuration = 1864 nconf->dot11MeshAwakeWindowDuration; 1865 ieee80211_mbss_info_change_notify(sdata, BSS_CHANGED_BEACON); 1866 return 0; 1867 } 1868 1869 static int ieee80211_join_mesh(struct wiphy *wiphy, struct net_device *dev, 1870 const struct mesh_config *conf, 1871 const struct mesh_setup *setup) 1872 { 1873 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1874 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh; 1875 int err; 1876 1877 memcpy(&ifmsh->mshcfg, conf, sizeof(struct mesh_config)); 1878 err = copy_mesh_setup(ifmsh, setup); 1879 if (err) 1880 return err; 1881 1882 /* can mesh use other SMPS modes? */ 1883 sdata->smps_mode = IEEE80211_SMPS_OFF; 1884 sdata->needed_rx_chains = sdata->local->rx_chains; 1885 1886 err = ieee80211_vif_use_channel(sdata, &setup->chandef, 1887 IEEE80211_CHANCTX_SHARED); 1888 if (err) 1889 return err; 1890 1891 return ieee80211_start_mesh(sdata); 1892 } 1893 1894 static int ieee80211_leave_mesh(struct wiphy *wiphy, struct net_device *dev) 1895 { 1896 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1897 1898 ieee80211_stop_mesh(sdata); 1899 ieee80211_vif_release_channel(sdata); 1900 1901 return 0; 1902 } 1903 #endif 1904 1905 static int ieee80211_change_bss(struct wiphy *wiphy, 1906 struct net_device *dev, 1907 struct bss_parameters *params) 1908 { 1909 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1910 enum ieee80211_band band; 1911 u32 changed = 0; 1912 1913 if (!rtnl_dereference(sdata->u.ap.beacon)) 1914 return -ENOENT; 1915 1916 band = ieee80211_get_sdata_band(sdata); 1917 1918 if (params->use_cts_prot >= 0) { 1919 sdata->vif.bss_conf.use_cts_prot = params->use_cts_prot; 1920 changed |= BSS_CHANGED_ERP_CTS_PROT; 1921 } 1922 if (params->use_short_preamble >= 0) { 1923 sdata->vif.bss_conf.use_short_preamble = 1924 params->use_short_preamble; 1925 changed |= BSS_CHANGED_ERP_PREAMBLE; 1926 } 1927 1928 if (!sdata->vif.bss_conf.use_short_slot && 1929 band == IEEE80211_BAND_5GHZ) { 1930 sdata->vif.bss_conf.use_short_slot = true; 1931 changed |= BSS_CHANGED_ERP_SLOT; 1932 } 1933 1934 if (params->use_short_slot_time >= 0) { 1935 sdata->vif.bss_conf.use_short_slot = 1936 params->use_short_slot_time; 1937 changed |= BSS_CHANGED_ERP_SLOT; 1938 } 1939 1940 if (params->basic_rates) { 1941 int i, j; 1942 u32 rates = 0; 1943 struct ieee80211_supported_band *sband = wiphy->bands[band]; 1944 1945 for (i = 0; i < params->basic_rates_len; i++) { 1946 int rate = (params->basic_rates[i] & 0x7f) * 5; 1947 for (j = 0; j < sband->n_bitrates; j++) { 1948 if (sband->bitrates[j].bitrate == rate) 1949 rates |= BIT(j); 1950 } 1951 } 1952 sdata->vif.bss_conf.basic_rates = rates; 1953 changed |= BSS_CHANGED_BASIC_RATES; 1954 } 1955 1956 if (params->ap_isolate >= 0) { 1957 if (params->ap_isolate) 1958 sdata->flags |= IEEE80211_SDATA_DONT_BRIDGE_PACKETS; 1959 else 1960 sdata->flags &= ~IEEE80211_SDATA_DONT_BRIDGE_PACKETS; 1961 } 1962 1963 if (params->ht_opmode >= 0) { 1964 sdata->vif.bss_conf.ht_operation_mode = 1965 (u16) params->ht_opmode; 1966 changed |= BSS_CHANGED_HT; 1967 } 1968 1969 if (params->p2p_ctwindow >= 0) { 1970 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow &= 1971 ~IEEE80211_P2P_OPPPS_CTWINDOW_MASK; 1972 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |= 1973 params->p2p_ctwindow & IEEE80211_P2P_OPPPS_CTWINDOW_MASK; 1974 changed |= BSS_CHANGED_P2P_PS; 1975 } 1976 1977 if (params->p2p_opp_ps > 0) { 1978 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |= 1979 IEEE80211_P2P_OPPPS_ENABLE_BIT; 1980 changed |= BSS_CHANGED_P2P_PS; 1981 } else if (params->p2p_opp_ps == 0) { 1982 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow &= 1983 ~IEEE80211_P2P_OPPPS_ENABLE_BIT; 1984 changed |= BSS_CHANGED_P2P_PS; 1985 } 1986 1987 ieee80211_bss_info_change_notify(sdata, changed); 1988 1989 return 0; 1990 } 1991 1992 static int ieee80211_set_txq_params(struct wiphy *wiphy, 1993 struct net_device *dev, 1994 struct ieee80211_txq_params *params) 1995 { 1996 struct ieee80211_local *local = wiphy_priv(wiphy); 1997 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1998 struct ieee80211_tx_queue_params p; 1999 2000 if (!local->ops->conf_tx) 2001 return -EOPNOTSUPP; 2002 2003 if (local->hw.queues < IEEE80211_NUM_ACS) 2004 return -EOPNOTSUPP; 2005 2006 memset(&p, 0, sizeof(p)); 2007 p.aifs = params->aifs; 2008 p.cw_max = params->cwmax; 2009 p.cw_min = params->cwmin; 2010 p.txop = params->txop; 2011 2012 /* 2013 * Setting tx queue params disables u-apsd because it's only 2014 * called in master mode. 2015 */ 2016 p.uapsd = false; 2017 2018 sdata->tx_conf[params->ac] = p; 2019 if (drv_conf_tx(local, sdata, params->ac, &p)) { 2020 wiphy_debug(local->hw.wiphy, 2021 "failed to set TX queue parameters for AC %d\n", 2022 params->ac); 2023 return -EINVAL; 2024 } 2025 2026 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_QOS); 2027 2028 return 0; 2029 } 2030 2031 #ifdef CONFIG_PM 2032 static int ieee80211_suspend(struct wiphy *wiphy, 2033 struct cfg80211_wowlan *wowlan) 2034 { 2035 return __ieee80211_suspend(wiphy_priv(wiphy), wowlan); 2036 } 2037 2038 static int ieee80211_resume(struct wiphy *wiphy) 2039 { 2040 return __ieee80211_resume(wiphy_priv(wiphy)); 2041 } 2042 #else 2043 #define ieee80211_suspend NULL 2044 #define ieee80211_resume NULL 2045 #endif 2046 2047 static int ieee80211_scan(struct wiphy *wiphy, 2048 struct cfg80211_scan_request *req) 2049 { 2050 struct ieee80211_sub_if_data *sdata; 2051 2052 sdata = IEEE80211_WDEV_TO_SUB_IF(req->wdev); 2053 2054 switch (ieee80211_vif_type_p2p(&sdata->vif)) { 2055 case NL80211_IFTYPE_STATION: 2056 case NL80211_IFTYPE_ADHOC: 2057 case NL80211_IFTYPE_MESH_POINT: 2058 case NL80211_IFTYPE_P2P_CLIENT: 2059 case NL80211_IFTYPE_P2P_DEVICE: 2060 break; 2061 case NL80211_IFTYPE_P2P_GO: 2062 if (sdata->local->ops->hw_scan) 2063 break; 2064 /* 2065 * FIXME: implement NoA while scanning in software, 2066 * for now fall through to allow scanning only when 2067 * beaconing hasn't been configured yet 2068 */ 2069 case NL80211_IFTYPE_AP: 2070 /* 2071 * If the scan has been forced (and the driver supports 2072 * forcing), don't care about being beaconing already. 2073 * This will create problems to the attached stations (e.g. all 2074 * the frames sent while scanning on other channel will be 2075 * lost) 2076 */ 2077 if (sdata->u.ap.beacon && 2078 (!(wiphy->features & NL80211_FEATURE_AP_SCAN) || 2079 !(req->flags & NL80211_SCAN_FLAG_AP))) 2080 return -EOPNOTSUPP; 2081 break; 2082 default: 2083 return -EOPNOTSUPP; 2084 } 2085 2086 return ieee80211_request_scan(sdata, req); 2087 } 2088 2089 static int 2090 ieee80211_sched_scan_start(struct wiphy *wiphy, 2091 struct net_device *dev, 2092 struct cfg80211_sched_scan_request *req) 2093 { 2094 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2095 2096 if (!sdata->local->ops->sched_scan_start) 2097 return -EOPNOTSUPP; 2098 2099 return ieee80211_request_sched_scan_start(sdata, req); 2100 } 2101 2102 static int 2103 ieee80211_sched_scan_stop(struct wiphy *wiphy, struct net_device *dev) 2104 { 2105 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2106 2107 if (!sdata->local->ops->sched_scan_stop) 2108 return -EOPNOTSUPP; 2109 2110 return ieee80211_request_sched_scan_stop(sdata); 2111 } 2112 2113 static int ieee80211_auth(struct wiphy *wiphy, struct net_device *dev, 2114 struct cfg80211_auth_request *req) 2115 { 2116 return ieee80211_mgd_auth(IEEE80211_DEV_TO_SUB_IF(dev), req); 2117 } 2118 2119 static int ieee80211_assoc(struct wiphy *wiphy, struct net_device *dev, 2120 struct cfg80211_assoc_request *req) 2121 { 2122 return ieee80211_mgd_assoc(IEEE80211_DEV_TO_SUB_IF(dev), req); 2123 } 2124 2125 static int ieee80211_deauth(struct wiphy *wiphy, struct net_device *dev, 2126 struct cfg80211_deauth_request *req) 2127 { 2128 return ieee80211_mgd_deauth(IEEE80211_DEV_TO_SUB_IF(dev), req); 2129 } 2130 2131 static int ieee80211_disassoc(struct wiphy *wiphy, struct net_device *dev, 2132 struct cfg80211_disassoc_request *req) 2133 { 2134 return ieee80211_mgd_disassoc(IEEE80211_DEV_TO_SUB_IF(dev), req); 2135 } 2136 2137 static int ieee80211_join_ibss(struct wiphy *wiphy, struct net_device *dev, 2138 struct cfg80211_ibss_params *params) 2139 { 2140 return ieee80211_ibss_join(IEEE80211_DEV_TO_SUB_IF(dev), params); 2141 } 2142 2143 static int ieee80211_leave_ibss(struct wiphy *wiphy, struct net_device *dev) 2144 { 2145 return ieee80211_ibss_leave(IEEE80211_DEV_TO_SUB_IF(dev)); 2146 } 2147 2148 static int ieee80211_set_mcast_rate(struct wiphy *wiphy, struct net_device *dev, 2149 int rate[IEEE80211_NUM_BANDS]) 2150 { 2151 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2152 2153 memcpy(sdata->vif.bss_conf.mcast_rate, rate, 2154 sizeof(int) * IEEE80211_NUM_BANDS); 2155 2156 return 0; 2157 } 2158 2159 static int ieee80211_set_wiphy_params(struct wiphy *wiphy, u32 changed) 2160 { 2161 struct ieee80211_local *local = wiphy_priv(wiphy); 2162 int err; 2163 2164 if (changed & WIPHY_PARAM_FRAG_THRESHOLD) { 2165 err = drv_set_frag_threshold(local, wiphy->frag_threshold); 2166 2167 if (err) 2168 return err; 2169 } 2170 2171 if (changed & WIPHY_PARAM_COVERAGE_CLASS) { 2172 err = drv_set_coverage_class(local, wiphy->coverage_class); 2173 2174 if (err) 2175 return err; 2176 } 2177 2178 if (changed & WIPHY_PARAM_RTS_THRESHOLD) { 2179 err = drv_set_rts_threshold(local, wiphy->rts_threshold); 2180 2181 if (err) 2182 return err; 2183 } 2184 2185 if (changed & WIPHY_PARAM_RETRY_SHORT) { 2186 if (wiphy->retry_short > IEEE80211_MAX_TX_RETRY) 2187 return -EINVAL; 2188 local->hw.conf.short_frame_max_tx_count = wiphy->retry_short; 2189 } 2190 if (changed & WIPHY_PARAM_RETRY_LONG) { 2191 if (wiphy->retry_long > IEEE80211_MAX_TX_RETRY) 2192 return -EINVAL; 2193 local->hw.conf.long_frame_max_tx_count = wiphy->retry_long; 2194 } 2195 if (changed & 2196 (WIPHY_PARAM_RETRY_SHORT | WIPHY_PARAM_RETRY_LONG)) 2197 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_RETRY_LIMITS); 2198 2199 return 0; 2200 } 2201 2202 static int ieee80211_set_tx_power(struct wiphy *wiphy, 2203 struct wireless_dev *wdev, 2204 enum nl80211_tx_power_setting type, int mbm) 2205 { 2206 struct ieee80211_local *local = wiphy_priv(wiphy); 2207 struct ieee80211_sub_if_data *sdata; 2208 2209 if (wdev) { 2210 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 2211 2212 switch (type) { 2213 case NL80211_TX_POWER_AUTOMATIC: 2214 sdata->user_power_level = IEEE80211_UNSET_POWER_LEVEL; 2215 break; 2216 case NL80211_TX_POWER_LIMITED: 2217 case NL80211_TX_POWER_FIXED: 2218 if (mbm < 0 || (mbm % 100)) 2219 return -EOPNOTSUPP; 2220 sdata->user_power_level = MBM_TO_DBM(mbm); 2221 break; 2222 } 2223 2224 ieee80211_recalc_txpower(sdata); 2225 2226 return 0; 2227 } 2228 2229 switch (type) { 2230 case NL80211_TX_POWER_AUTOMATIC: 2231 local->user_power_level = IEEE80211_UNSET_POWER_LEVEL; 2232 break; 2233 case NL80211_TX_POWER_LIMITED: 2234 case NL80211_TX_POWER_FIXED: 2235 if (mbm < 0 || (mbm % 100)) 2236 return -EOPNOTSUPP; 2237 local->user_power_level = MBM_TO_DBM(mbm); 2238 break; 2239 } 2240 2241 mutex_lock(&local->iflist_mtx); 2242 list_for_each_entry(sdata, &local->interfaces, list) 2243 sdata->user_power_level = local->user_power_level; 2244 list_for_each_entry(sdata, &local->interfaces, list) 2245 ieee80211_recalc_txpower(sdata); 2246 mutex_unlock(&local->iflist_mtx); 2247 2248 return 0; 2249 } 2250 2251 static int ieee80211_get_tx_power(struct wiphy *wiphy, 2252 struct wireless_dev *wdev, 2253 int *dbm) 2254 { 2255 struct ieee80211_local *local = wiphy_priv(wiphy); 2256 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 2257 2258 if (!local->use_chanctx) 2259 *dbm = local->hw.conf.power_level; 2260 else 2261 *dbm = sdata->vif.bss_conf.txpower; 2262 2263 return 0; 2264 } 2265 2266 static int ieee80211_set_wds_peer(struct wiphy *wiphy, struct net_device *dev, 2267 const u8 *addr) 2268 { 2269 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2270 2271 memcpy(&sdata->u.wds.remote_addr, addr, ETH_ALEN); 2272 2273 return 0; 2274 } 2275 2276 static void ieee80211_rfkill_poll(struct wiphy *wiphy) 2277 { 2278 struct ieee80211_local *local = wiphy_priv(wiphy); 2279 2280 drv_rfkill_poll(local); 2281 } 2282 2283 #ifdef CONFIG_NL80211_TESTMODE 2284 static int ieee80211_testmode_cmd(struct wiphy *wiphy, void *data, int len) 2285 { 2286 struct ieee80211_local *local = wiphy_priv(wiphy); 2287 2288 if (!local->ops->testmode_cmd) 2289 return -EOPNOTSUPP; 2290 2291 return local->ops->testmode_cmd(&local->hw, data, len); 2292 } 2293 2294 static int ieee80211_testmode_dump(struct wiphy *wiphy, 2295 struct sk_buff *skb, 2296 struct netlink_callback *cb, 2297 void *data, int len) 2298 { 2299 struct ieee80211_local *local = wiphy_priv(wiphy); 2300 2301 if (!local->ops->testmode_dump) 2302 return -EOPNOTSUPP; 2303 2304 return local->ops->testmode_dump(&local->hw, skb, cb, data, len); 2305 } 2306 #endif 2307 2308 int __ieee80211_request_smps(struct ieee80211_sub_if_data *sdata, 2309 enum ieee80211_smps_mode smps_mode) 2310 { 2311 const u8 *ap; 2312 enum ieee80211_smps_mode old_req; 2313 int err; 2314 2315 lockdep_assert_held(&sdata->u.mgd.mtx); 2316 2317 old_req = sdata->u.mgd.req_smps; 2318 sdata->u.mgd.req_smps = smps_mode; 2319 2320 if (old_req == smps_mode && 2321 smps_mode != IEEE80211_SMPS_AUTOMATIC) 2322 return 0; 2323 2324 /* 2325 * If not associated, or current association is not an HT 2326 * association, there's no need to do anything, just store 2327 * the new value until we associate. 2328 */ 2329 if (!sdata->u.mgd.associated || 2330 sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_20_NOHT) 2331 return 0; 2332 2333 ap = sdata->u.mgd.associated->bssid; 2334 2335 if (smps_mode == IEEE80211_SMPS_AUTOMATIC) { 2336 if (sdata->u.mgd.powersave) 2337 smps_mode = IEEE80211_SMPS_DYNAMIC; 2338 else 2339 smps_mode = IEEE80211_SMPS_OFF; 2340 } 2341 2342 /* send SM PS frame to AP */ 2343 err = ieee80211_send_smps_action(sdata, smps_mode, 2344 ap, ap); 2345 if (err) 2346 sdata->u.mgd.req_smps = old_req; 2347 2348 return err; 2349 } 2350 2351 static int ieee80211_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev, 2352 bool enabled, int timeout) 2353 { 2354 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2355 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); 2356 2357 if (sdata->vif.type != NL80211_IFTYPE_STATION && 2358 sdata->vif.type != NL80211_IFTYPE_MESH_POINT) 2359 return -EOPNOTSUPP; 2360 2361 if (!(local->hw.flags & IEEE80211_HW_SUPPORTS_PS)) 2362 return -EOPNOTSUPP; 2363 2364 if (enabled == sdata->u.mgd.powersave && 2365 timeout == local->dynamic_ps_forced_timeout) 2366 return 0; 2367 2368 sdata->u.mgd.powersave = enabled; 2369 local->dynamic_ps_forced_timeout = timeout; 2370 2371 /* no change, but if automatic follow powersave */ 2372 mutex_lock(&sdata->u.mgd.mtx); 2373 __ieee80211_request_smps(sdata, sdata->u.mgd.req_smps); 2374 mutex_unlock(&sdata->u.mgd.mtx); 2375 2376 if (local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_PS) 2377 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS); 2378 2379 ieee80211_recalc_ps(local, -1); 2380 ieee80211_recalc_ps_vif(sdata); 2381 2382 return 0; 2383 } 2384 2385 static int ieee80211_set_cqm_rssi_config(struct wiphy *wiphy, 2386 struct net_device *dev, 2387 s32 rssi_thold, u32 rssi_hyst) 2388 { 2389 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2390 struct ieee80211_vif *vif = &sdata->vif; 2391 struct ieee80211_bss_conf *bss_conf = &vif->bss_conf; 2392 2393 if (rssi_thold == bss_conf->cqm_rssi_thold && 2394 rssi_hyst == bss_conf->cqm_rssi_hyst) 2395 return 0; 2396 2397 bss_conf->cqm_rssi_thold = rssi_thold; 2398 bss_conf->cqm_rssi_hyst = rssi_hyst; 2399 2400 /* tell the driver upon association, unless already associated */ 2401 if (sdata->u.mgd.associated && 2402 sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI) 2403 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_CQM); 2404 2405 return 0; 2406 } 2407 2408 static int ieee80211_set_bitrate_mask(struct wiphy *wiphy, 2409 struct net_device *dev, 2410 const u8 *addr, 2411 const struct cfg80211_bitrate_mask *mask) 2412 { 2413 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2414 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); 2415 int i, ret; 2416 2417 if (!ieee80211_sdata_running(sdata)) 2418 return -ENETDOWN; 2419 2420 if (local->hw.flags & IEEE80211_HW_HAS_RATE_CONTROL) { 2421 ret = drv_set_bitrate_mask(local, sdata, mask); 2422 if (ret) 2423 return ret; 2424 } 2425 2426 for (i = 0; i < IEEE80211_NUM_BANDS; i++) { 2427 struct ieee80211_supported_band *sband = wiphy->bands[i]; 2428 int j; 2429 2430 sdata->rc_rateidx_mask[i] = mask->control[i].legacy; 2431 memcpy(sdata->rc_rateidx_mcs_mask[i], mask->control[i].mcs, 2432 sizeof(mask->control[i].mcs)); 2433 2434 sdata->rc_has_mcs_mask[i] = false; 2435 if (!sband) 2436 continue; 2437 2438 for (j = 0; j < IEEE80211_HT_MCS_MASK_LEN; j++) 2439 if (~sdata->rc_rateidx_mcs_mask[i][j]) { 2440 sdata->rc_has_mcs_mask[i] = true; 2441 break; 2442 } 2443 } 2444 2445 return 0; 2446 } 2447 2448 static int ieee80211_start_roc_work(struct ieee80211_local *local, 2449 struct ieee80211_sub_if_data *sdata, 2450 struct ieee80211_channel *channel, 2451 unsigned int duration, u64 *cookie, 2452 struct sk_buff *txskb, 2453 enum ieee80211_roc_type type) 2454 { 2455 struct ieee80211_roc_work *roc, *tmp; 2456 bool queued = false; 2457 int ret; 2458 2459 lockdep_assert_held(&local->mtx); 2460 2461 if (local->use_chanctx && !local->ops->remain_on_channel) 2462 return -EOPNOTSUPP; 2463 2464 roc = kzalloc(sizeof(*roc), GFP_KERNEL); 2465 if (!roc) 2466 return -ENOMEM; 2467 2468 roc->chan = channel; 2469 roc->duration = duration; 2470 roc->req_duration = duration; 2471 roc->frame = txskb; 2472 roc->type = type; 2473 roc->mgmt_tx_cookie = (unsigned long)txskb; 2474 roc->sdata = sdata; 2475 INIT_DELAYED_WORK(&roc->work, ieee80211_sw_roc_work); 2476 INIT_LIST_HEAD(&roc->dependents); 2477 2478 /* if there's one pending or we're scanning, queue this one */ 2479 if (!list_empty(&local->roc_list) || 2480 local->scanning || local->radar_detect_enabled) 2481 goto out_check_combine; 2482 2483 /* if not HW assist, just queue & schedule work */ 2484 if (!local->ops->remain_on_channel) { 2485 ieee80211_queue_delayed_work(&local->hw, &roc->work, 0); 2486 goto out_queue; 2487 } 2488 2489 /* otherwise actually kick it off here (for error handling) */ 2490 2491 /* 2492 * If the duration is zero, then the driver 2493 * wouldn't actually do anything. Set it to 2494 * 10 for now. 2495 * 2496 * TODO: cancel the off-channel operation 2497 * when we get the SKB's TX status and 2498 * the wait time was zero before. 2499 */ 2500 if (!duration) 2501 duration = 10; 2502 2503 ret = drv_remain_on_channel(local, sdata, channel, duration, type); 2504 if (ret) { 2505 kfree(roc); 2506 return ret; 2507 } 2508 2509 roc->started = true; 2510 goto out_queue; 2511 2512 out_check_combine: 2513 list_for_each_entry(tmp, &local->roc_list, list) { 2514 if (tmp->chan != channel || tmp->sdata != sdata) 2515 continue; 2516 2517 /* 2518 * Extend this ROC if possible: 2519 * 2520 * If it hasn't started yet, just increase the duration 2521 * and add the new one to the list of dependents. 2522 * If the type of the new ROC has higher priority, modify the 2523 * type of the previous one to match that of the new one. 2524 */ 2525 if (!tmp->started) { 2526 list_add_tail(&roc->list, &tmp->dependents); 2527 tmp->duration = max(tmp->duration, roc->duration); 2528 tmp->type = max(tmp->type, roc->type); 2529 queued = true; 2530 break; 2531 } 2532 2533 /* If it has already started, it's more difficult ... */ 2534 if (local->ops->remain_on_channel) { 2535 unsigned long j = jiffies; 2536 2537 /* 2538 * In the offloaded ROC case, if it hasn't begun, add 2539 * this new one to the dependent list to be handled 2540 * when the master one begins. If it has begun, 2541 * check that there's still a minimum time left and 2542 * if so, start this one, transmitting the frame, but 2543 * add it to the list directly after this one with 2544 * a reduced time so we'll ask the driver to execute 2545 * it right after finishing the previous one, in the 2546 * hope that it'll also be executed right afterwards, 2547 * effectively extending the old one. 2548 * If there's no minimum time left, just add it to the 2549 * normal list. 2550 * TODO: the ROC type is ignored here, assuming that it 2551 * is better to immediately use the current ROC. 2552 */ 2553 if (!tmp->hw_begun) { 2554 list_add_tail(&roc->list, &tmp->dependents); 2555 queued = true; 2556 break; 2557 } 2558 2559 if (time_before(j + IEEE80211_ROC_MIN_LEFT, 2560 tmp->hw_start_time + 2561 msecs_to_jiffies(tmp->duration))) { 2562 int new_dur; 2563 2564 ieee80211_handle_roc_started(roc); 2565 2566 new_dur = roc->duration - 2567 jiffies_to_msecs(tmp->hw_start_time + 2568 msecs_to_jiffies( 2569 tmp->duration) - 2570 j); 2571 2572 if (new_dur > 0) { 2573 /* add right after tmp */ 2574 list_add(&roc->list, &tmp->list); 2575 } else { 2576 list_add_tail(&roc->list, 2577 &tmp->dependents); 2578 } 2579 queued = true; 2580 } 2581 } else if (del_timer_sync(&tmp->work.timer)) { 2582 unsigned long new_end; 2583 2584 /* 2585 * In the software ROC case, cancel the timer, if 2586 * that fails then the finish work is already 2587 * queued/pending and thus we queue the new ROC 2588 * normally, if that succeeds then we can extend 2589 * the timer duration and TX the frame (if any.) 2590 */ 2591 2592 list_add_tail(&roc->list, &tmp->dependents); 2593 queued = true; 2594 2595 new_end = jiffies + msecs_to_jiffies(roc->duration); 2596 2597 /* ok, it was started & we canceled timer */ 2598 if (time_after(new_end, tmp->work.timer.expires)) 2599 mod_timer(&tmp->work.timer, new_end); 2600 else 2601 add_timer(&tmp->work.timer); 2602 2603 ieee80211_handle_roc_started(roc); 2604 } 2605 break; 2606 } 2607 2608 out_queue: 2609 if (!queued) 2610 list_add_tail(&roc->list, &local->roc_list); 2611 2612 /* 2613 * cookie is either the roc cookie (for normal roc) 2614 * or the SKB (for mgmt TX) 2615 */ 2616 if (!txskb) { 2617 /* local->mtx protects this */ 2618 local->roc_cookie_counter++; 2619 roc->cookie = local->roc_cookie_counter; 2620 /* wow, you wrapped 64 bits ... more likely a bug */ 2621 if (WARN_ON(roc->cookie == 0)) { 2622 roc->cookie = 1; 2623 local->roc_cookie_counter++; 2624 } 2625 *cookie = roc->cookie; 2626 } else { 2627 *cookie = (unsigned long)txskb; 2628 } 2629 2630 return 0; 2631 } 2632 2633 static int ieee80211_remain_on_channel(struct wiphy *wiphy, 2634 struct wireless_dev *wdev, 2635 struct ieee80211_channel *chan, 2636 unsigned int duration, 2637 u64 *cookie) 2638 { 2639 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 2640 struct ieee80211_local *local = sdata->local; 2641 int ret; 2642 2643 mutex_lock(&local->mtx); 2644 ret = ieee80211_start_roc_work(local, sdata, chan, 2645 duration, cookie, NULL, 2646 IEEE80211_ROC_TYPE_NORMAL); 2647 mutex_unlock(&local->mtx); 2648 2649 return ret; 2650 } 2651 2652 static int ieee80211_cancel_roc(struct ieee80211_local *local, 2653 u64 cookie, bool mgmt_tx) 2654 { 2655 struct ieee80211_roc_work *roc, *tmp, *found = NULL; 2656 int ret; 2657 2658 mutex_lock(&local->mtx); 2659 list_for_each_entry_safe(roc, tmp, &local->roc_list, list) { 2660 struct ieee80211_roc_work *dep, *tmp2; 2661 2662 list_for_each_entry_safe(dep, tmp2, &roc->dependents, list) { 2663 if (!mgmt_tx && dep->cookie != cookie) 2664 continue; 2665 else if (mgmt_tx && dep->mgmt_tx_cookie != cookie) 2666 continue; 2667 /* found dependent item -- just remove it */ 2668 list_del(&dep->list); 2669 mutex_unlock(&local->mtx); 2670 2671 ieee80211_roc_notify_destroy(dep, true); 2672 return 0; 2673 } 2674 2675 if (!mgmt_tx && roc->cookie != cookie) 2676 continue; 2677 else if (mgmt_tx && roc->mgmt_tx_cookie != cookie) 2678 continue; 2679 2680 found = roc; 2681 break; 2682 } 2683 2684 if (!found) { 2685 mutex_unlock(&local->mtx); 2686 return -ENOENT; 2687 } 2688 2689 /* 2690 * We found the item to cancel, so do that. Note that it 2691 * may have dependents, which we also cancel (and send 2692 * the expired signal for.) Not doing so would be quite 2693 * tricky here, but we may need to fix it later. 2694 */ 2695 2696 if (local->ops->remain_on_channel) { 2697 if (found->started) { 2698 ret = drv_cancel_remain_on_channel(local); 2699 if (WARN_ON_ONCE(ret)) { 2700 mutex_unlock(&local->mtx); 2701 return ret; 2702 } 2703 } 2704 2705 list_del(&found->list); 2706 2707 if (found->started) 2708 ieee80211_start_next_roc(local); 2709 mutex_unlock(&local->mtx); 2710 2711 ieee80211_roc_notify_destroy(found, true); 2712 } else { 2713 /* work may be pending so use it all the time */ 2714 found->abort = true; 2715 ieee80211_queue_delayed_work(&local->hw, &found->work, 0); 2716 2717 mutex_unlock(&local->mtx); 2718 2719 /* work will clean up etc */ 2720 flush_delayed_work(&found->work); 2721 WARN_ON(!found->to_be_freed); 2722 kfree(found); 2723 } 2724 2725 return 0; 2726 } 2727 2728 static int ieee80211_cancel_remain_on_channel(struct wiphy *wiphy, 2729 struct wireless_dev *wdev, 2730 u64 cookie) 2731 { 2732 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 2733 struct ieee80211_local *local = sdata->local; 2734 2735 return ieee80211_cancel_roc(local, cookie, false); 2736 } 2737 2738 static int ieee80211_start_radar_detection(struct wiphy *wiphy, 2739 struct net_device *dev, 2740 struct cfg80211_chan_def *chandef) 2741 { 2742 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2743 struct ieee80211_local *local = sdata->local; 2744 unsigned long timeout; 2745 int err; 2746 2747 if (!list_empty(&local->roc_list) || local->scanning) 2748 return -EBUSY; 2749 2750 /* whatever, but channel contexts should not complain about that one */ 2751 sdata->smps_mode = IEEE80211_SMPS_OFF; 2752 sdata->needed_rx_chains = local->rx_chains; 2753 sdata->radar_required = true; 2754 2755 mutex_lock(&local->iflist_mtx); 2756 err = ieee80211_vif_use_channel(sdata, chandef, 2757 IEEE80211_CHANCTX_SHARED); 2758 mutex_unlock(&local->iflist_mtx); 2759 if (err) 2760 return err; 2761 2762 timeout = msecs_to_jiffies(IEEE80211_DFS_MIN_CAC_TIME_MS); 2763 ieee80211_queue_delayed_work(&sdata->local->hw, 2764 &sdata->dfs_cac_timer_work, timeout); 2765 2766 return 0; 2767 } 2768 2769 static int ieee80211_mgmt_tx(struct wiphy *wiphy, struct wireless_dev *wdev, 2770 struct ieee80211_channel *chan, bool offchan, 2771 unsigned int wait, const u8 *buf, size_t len, 2772 bool no_cck, bool dont_wait_for_ack, u64 *cookie) 2773 { 2774 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 2775 struct ieee80211_local *local = sdata->local; 2776 struct sk_buff *skb; 2777 struct sta_info *sta; 2778 const struct ieee80211_mgmt *mgmt = (void *)buf; 2779 bool need_offchan = false; 2780 u32 flags; 2781 int ret; 2782 2783 if (dont_wait_for_ack) 2784 flags = IEEE80211_TX_CTL_NO_ACK; 2785 else 2786 flags = IEEE80211_TX_INTFL_NL80211_FRAME_TX | 2787 IEEE80211_TX_CTL_REQ_TX_STATUS; 2788 2789 if (no_cck) 2790 flags |= IEEE80211_TX_CTL_NO_CCK_RATE; 2791 2792 switch (sdata->vif.type) { 2793 case NL80211_IFTYPE_ADHOC: 2794 if (!sdata->vif.bss_conf.ibss_joined) 2795 need_offchan = true; 2796 /* fall through */ 2797 #ifdef CONFIG_MAC80211_MESH 2798 case NL80211_IFTYPE_MESH_POINT: 2799 if (ieee80211_vif_is_mesh(&sdata->vif) && 2800 !sdata->u.mesh.mesh_id_len) 2801 need_offchan = true; 2802 /* fall through */ 2803 #endif 2804 case NL80211_IFTYPE_AP: 2805 case NL80211_IFTYPE_AP_VLAN: 2806 case NL80211_IFTYPE_P2P_GO: 2807 if (sdata->vif.type != NL80211_IFTYPE_ADHOC && 2808 !ieee80211_vif_is_mesh(&sdata->vif) && 2809 !rcu_access_pointer(sdata->bss->beacon)) 2810 need_offchan = true; 2811 if (!ieee80211_is_action(mgmt->frame_control) || 2812 mgmt->u.action.category == WLAN_CATEGORY_PUBLIC) 2813 break; 2814 rcu_read_lock(); 2815 sta = sta_info_get(sdata, mgmt->da); 2816 rcu_read_unlock(); 2817 if (!sta) 2818 return -ENOLINK; 2819 break; 2820 case NL80211_IFTYPE_STATION: 2821 case NL80211_IFTYPE_P2P_CLIENT: 2822 if (!sdata->u.mgd.associated) 2823 need_offchan = true; 2824 break; 2825 case NL80211_IFTYPE_P2P_DEVICE: 2826 need_offchan = true; 2827 break; 2828 default: 2829 return -EOPNOTSUPP; 2830 } 2831 2832 mutex_lock(&local->mtx); 2833 2834 /* Check if the operating channel is the requested channel */ 2835 if (!need_offchan) { 2836 struct ieee80211_chanctx_conf *chanctx_conf; 2837 2838 rcu_read_lock(); 2839 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); 2840 2841 if (chanctx_conf) 2842 need_offchan = chan != chanctx_conf->def.chan; 2843 else 2844 need_offchan = true; 2845 rcu_read_unlock(); 2846 } 2847 2848 if (need_offchan && !offchan) { 2849 ret = -EBUSY; 2850 goto out_unlock; 2851 } 2852 2853 skb = dev_alloc_skb(local->hw.extra_tx_headroom + len); 2854 if (!skb) { 2855 ret = -ENOMEM; 2856 goto out_unlock; 2857 } 2858 skb_reserve(skb, local->hw.extra_tx_headroom); 2859 2860 memcpy(skb_put(skb, len), buf, len); 2861 2862 IEEE80211_SKB_CB(skb)->flags = flags; 2863 2864 skb->dev = sdata->dev; 2865 2866 if (!need_offchan) { 2867 *cookie = (unsigned long) skb; 2868 ieee80211_tx_skb(sdata, skb); 2869 ret = 0; 2870 goto out_unlock; 2871 } 2872 2873 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_TX_OFFCHAN | 2874 IEEE80211_TX_INTFL_OFFCHAN_TX_OK; 2875 if (local->hw.flags & IEEE80211_HW_QUEUE_CONTROL) 2876 IEEE80211_SKB_CB(skb)->hw_queue = 2877 local->hw.offchannel_tx_hw_queue; 2878 2879 /* This will handle all kinds of coalescing and immediate TX */ 2880 ret = ieee80211_start_roc_work(local, sdata, chan, 2881 wait, cookie, skb, 2882 IEEE80211_ROC_TYPE_MGMT_TX); 2883 if (ret) 2884 kfree_skb(skb); 2885 out_unlock: 2886 mutex_unlock(&local->mtx); 2887 return ret; 2888 } 2889 2890 static int ieee80211_mgmt_tx_cancel_wait(struct wiphy *wiphy, 2891 struct wireless_dev *wdev, 2892 u64 cookie) 2893 { 2894 struct ieee80211_local *local = wiphy_priv(wiphy); 2895 2896 return ieee80211_cancel_roc(local, cookie, true); 2897 } 2898 2899 static void ieee80211_mgmt_frame_register(struct wiphy *wiphy, 2900 struct wireless_dev *wdev, 2901 u16 frame_type, bool reg) 2902 { 2903 struct ieee80211_local *local = wiphy_priv(wiphy); 2904 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 2905 2906 switch (frame_type) { 2907 case IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_AUTH: 2908 if (sdata->vif.type == NL80211_IFTYPE_ADHOC) { 2909 struct ieee80211_if_ibss *ifibss = &sdata->u.ibss; 2910 2911 if (reg) 2912 ifibss->auth_frame_registrations++; 2913 else 2914 ifibss->auth_frame_registrations--; 2915 } 2916 break; 2917 case IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_PROBE_REQ: 2918 if (reg) 2919 local->probe_req_reg++; 2920 else 2921 local->probe_req_reg--; 2922 2923 if (!local->open_count) 2924 break; 2925 2926 ieee80211_queue_work(&local->hw, &local->reconfig_filter); 2927 break; 2928 default: 2929 break; 2930 } 2931 } 2932 2933 static int ieee80211_set_antenna(struct wiphy *wiphy, u32 tx_ant, u32 rx_ant) 2934 { 2935 struct ieee80211_local *local = wiphy_priv(wiphy); 2936 2937 if (local->started) 2938 return -EOPNOTSUPP; 2939 2940 return drv_set_antenna(local, tx_ant, rx_ant); 2941 } 2942 2943 static int ieee80211_get_antenna(struct wiphy *wiphy, u32 *tx_ant, u32 *rx_ant) 2944 { 2945 struct ieee80211_local *local = wiphy_priv(wiphy); 2946 2947 return drv_get_antenna(local, tx_ant, rx_ant); 2948 } 2949 2950 static int ieee80211_set_ringparam(struct wiphy *wiphy, u32 tx, u32 rx) 2951 { 2952 struct ieee80211_local *local = wiphy_priv(wiphy); 2953 2954 return drv_set_ringparam(local, tx, rx); 2955 } 2956 2957 static void ieee80211_get_ringparam(struct wiphy *wiphy, 2958 u32 *tx, u32 *tx_max, u32 *rx, u32 *rx_max) 2959 { 2960 struct ieee80211_local *local = wiphy_priv(wiphy); 2961 2962 drv_get_ringparam(local, tx, tx_max, rx, rx_max); 2963 } 2964 2965 static int ieee80211_set_rekey_data(struct wiphy *wiphy, 2966 struct net_device *dev, 2967 struct cfg80211_gtk_rekey_data *data) 2968 { 2969 struct ieee80211_local *local = wiphy_priv(wiphy); 2970 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2971 2972 if (!local->ops->set_rekey_data) 2973 return -EOPNOTSUPP; 2974 2975 drv_set_rekey_data(local, sdata, data); 2976 2977 return 0; 2978 } 2979 2980 static void ieee80211_tdls_add_ext_capab(struct sk_buff *skb) 2981 { 2982 u8 *pos = (void *)skb_put(skb, 7); 2983 2984 *pos++ = WLAN_EID_EXT_CAPABILITY; 2985 *pos++ = 5; /* len */ 2986 *pos++ = 0x0; 2987 *pos++ = 0x0; 2988 *pos++ = 0x0; 2989 *pos++ = 0x0; 2990 *pos++ = WLAN_EXT_CAPA5_TDLS_ENABLED; 2991 } 2992 2993 static u16 ieee80211_get_tdls_sta_capab(struct ieee80211_sub_if_data *sdata) 2994 { 2995 struct ieee80211_local *local = sdata->local; 2996 u16 capab; 2997 2998 capab = 0; 2999 if (ieee80211_get_sdata_band(sdata) != IEEE80211_BAND_2GHZ) 3000 return capab; 3001 3002 if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_SLOT_INCAPABLE)) 3003 capab |= WLAN_CAPABILITY_SHORT_SLOT_TIME; 3004 if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_PREAMBLE_INCAPABLE)) 3005 capab |= WLAN_CAPABILITY_SHORT_PREAMBLE; 3006 3007 return capab; 3008 } 3009 3010 static void ieee80211_tdls_add_link_ie(struct sk_buff *skb, u8 *src_addr, 3011 u8 *peer, u8 *bssid) 3012 { 3013 struct ieee80211_tdls_lnkie *lnkid; 3014 3015 lnkid = (void *)skb_put(skb, sizeof(struct ieee80211_tdls_lnkie)); 3016 3017 lnkid->ie_type = WLAN_EID_LINK_ID; 3018 lnkid->ie_len = sizeof(struct ieee80211_tdls_lnkie) - 2; 3019 3020 memcpy(lnkid->bssid, bssid, ETH_ALEN); 3021 memcpy(lnkid->init_sta, src_addr, ETH_ALEN); 3022 memcpy(lnkid->resp_sta, peer, ETH_ALEN); 3023 } 3024 3025 static int 3026 ieee80211_prep_tdls_encap_data(struct wiphy *wiphy, struct net_device *dev, 3027 u8 *peer, u8 action_code, u8 dialog_token, 3028 u16 status_code, struct sk_buff *skb) 3029 { 3030 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 3031 enum ieee80211_band band = ieee80211_get_sdata_band(sdata); 3032 struct ieee80211_tdls_data *tf; 3033 3034 tf = (void *)skb_put(skb, offsetof(struct ieee80211_tdls_data, u)); 3035 3036 memcpy(tf->da, peer, ETH_ALEN); 3037 memcpy(tf->sa, sdata->vif.addr, ETH_ALEN); 3038 tf->ether_type = cpu_to_be16(ETH_P_TDLS); 3039 tf->payload_type = WLAN_TDLS_SNAP_RFTYPE; 3040 3041 switch (action_code) { 3042 case WLAN_TDLS_SETUP_REQUEST: 3043 tf->category = WLAN_CATEGORY_TDLS; 3044 tf->action_code = WLAN_TDLS_SETUP_REQUEST; 3045 3046 skb_put(skb, sizeof(tf->u.setup_req)); 3047 tf->u.setup_req.dialog_token = dialog_token; 3048 tf->u.setup_req.capability = 3049 cpu_to_le16(ieee80211_get_tdls_sta_capab(sdata)); 3050 3051 ieee80211_add_srates_ie(sdata, skb, false, band); 3052 ieee80211_add_ext_srates_ie(sdata, skb, false, band); 3053 ieee80211_tdls_add_ext_capab(skb); 3054 break; 3055 case WLAN_TDLS_SETUP_RESPONSE: 3056 tf->category = WLAN_CATEGORY_TDLS; 3057 tf->action_code = WLAN_TDLS_SETUP_RESPONSE; 3058 3059 skb_put(skb, sizeof(tf->u.setup_resp)); 3060 tf->u.setup_resp.status_code = cpu_to_le16(status_code); 3061 tf->u.setup_resp.dialog_token = dialog_token; 3062 tf->u.setup_resp.capability = 3063 cpu_to_le16(ieee80211_get_tdls_sta_capab(sdata)); 3064 3065 ieee80211_add_srates_ie(sdata, skb, false, band); 3066 ieee80211_add_ext_srates_ie(sdata, skb, false, band); 3067 ieee80211_tdls_add_ext_capab(skb); 3068 break; 3069 case WLAN_TDLS_SETUP_CONFIRM: 3070 tf->category = WLAN_CATEGORY_TDLS; 3071 tf->action_code = WLAN_TDLS_SETUP_CONFIRM; 3072 3073 skb_put(skb, sizeof(tf->u.setup_cfm)); 3074 tf->u.setup_cfm.status_code = cpu_to_le16(status_code); 3075 tf->u.setup_cfm.dialog_token = dialog_token; 3076 break; 3077 case WLAN_TDLS_TEARDOWN: 3078 tf->category = WLAN_CATEGORY_TDLS; 3079 tf->action_code = WLAN_TDLS_TEARDOWN; 3080 3081 skb_put(skb, sizeof(tf->u.teardown)); 3082 tf->u.teardown.reason_code = cpu_to_le16(status_code); 3083 break; 3084 case WLAN_TDLS_DISCOVERY_REQUEST: 3085 tf->category = WLAN_CATEGORY_TDLS; 3086 tf->action_code = WLAN_TDLS_DISCOVERY_REQUEST; 3087 3088 skb_put(skb, sizeof(tf->u.discover_req)); 3089 tf->u.discover_req.dialog_token = dialog_token; 3090 break; 3091 default: 3092 return -EINVAL; 3093 } 3094 3095 return 0; 3096 } 3097 3098 static int 3099 ieee80211_prep_tdls_direct(struct wiphy *wiphy, struct net_device *dev, 3100 u8 *peer, u8 action_code, u8 dialog_token, 3101 u16 status_code, struct sk_buff *skb) 3102 { 3103 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 3104 enum ieee80211_band band = ieee80211_get_sdata_band(sdata); 3105 struct ieee80211_mgmt *mgmt; 3106 3107 mgmt = (void *)skb_put(skb, 24); 3108 memset(mgmt, 0, 24); 3109 memcpy(mgmt->da, peer, ETH_ALEN); 3110 memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN); 3111 memcpy(mgmt->bssid, sdata->u.mgd.bssid, ETH_ALEN); 3112 3113 mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | 3114 IEEE80211_STYPE_ACTION); 3115 3116 switch (action_code) { 3117 case WLAN_PUB_ACTION_TDLS_DISCOVER_RES: 3118 skb_put(skb, 1 + sizeof(mgmt->u.action.u.tdls_discover_resp)); 3119 mgmt->u.action.category = WLAN_CATEGORY_PUBLIC; 3120 mgmt->u.action.u.tdls_discover_resp.action_code = 3121 WLAN_PUB_ACTION_TDLS_DISCOVER_RES; 3122 mgmt->u.action.u.tdls_discover_resp.dialog_token = 3123 dialog_token; 3124 mgmt->u.action.u.tdls_discover_resp.capability = 3125 cpu_to_le16(ieee80211_get_tdls_sta_capab(sdata)); 3126 3127 ieee80211_add_srates_ie(sdata, skb, false, band); 3128 ieee80211_add_ext_srates_ie(sdata, skb, false, band); 3129 ieee80211_tdls_add_ext_capab(skb); 3130 break; 3131 default: 3132 return -EINVAL; 3133 } 3134 3135 return 0; 3136 } 3137 3138 static int ieee80211_tdls_mgmt(struct wiphy *wiphy, struct net_device *dev, 3139 u8 *peer, u8 action_code, u8 dialog_token, 3140 u16 status_code, const u8 *extra_ies, 3141 size_t extra_ies_len) 3142 { 3143 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 3144 struct ieee80211_local *local = sdata->local; 3145 struct sk_buff *skb = NULL; 3146 bool send_direct; 3147 int ret; 3148 3149 if (!(wiphy->flags & WIPHY_FLAG_SUPPORTS_TDLS)) 3150 return -ENOTSUPP; 3151 3152 /* make sure we are in managed mode, and associated */ 3153 if (sdata->vif.type != NL80211_IFTYPE_STATION || 3154 !sdata->u.mgd.associated) 3155 return -EINVAL; 3156 3157 tdls_dbg(sdata, "TDLS mgmt action %d peer %pM\n", 3158 action_code, peer); 3159 3160 skb = dev_alloc_skb(local->hw.extra_tx_headroom + 3161 max(sizeof(struct ieee80211_mgmt), 3162 sizeof(struct ieee80211_tdls_data)) + 3163 50 + /* supported rates */ 3164 7 + /* ext capab */ 3165 extra_ies_len + 3166 sizeof(struct ieee80211_tdls_lnkie)); 3167 if (!skb) 3168 return -ENOMEM; 3169 3170 skb_reserve(skb, local->hw.extra_tx_headroom); 3171 3172 switch (action_code) { 3173 case WLAN_TDLS_SETUP_REQUEST: 3174 case WLAN_TDLS_SETUP_RESPONSE: 3175 case WLAN_TDLS_SETUP_CONFIRM: 3176 case WLAN_TDLS_TEARDOWN: 3177 case WLAN_TDLS_DISCOVERY_REQUEST: 3178 ret = ieee80211_prep_tdls_encap_data(wiphy, dev, peer, 3179 action_code, dialog_token, 3180 status_code, skb); 3181 send_direct = false; 3182 break; 3183 case WLAN_PUB_ACTION_TDLS_DISCOVER_RES: 3184 ret = ieee80211_prep_tdls_direct(wiphy, dev, peer, action_code, 3185 dialog_token, status_code, 3186 skb); 3187 send_direct = true; 3188 break; 3189 default: 3190 ret = -ENOTSUPP; 3191 break; 3192 } 3193 3194 if (ret < 0) 3195 goto fail; 3196 3197 if (extra_ies_len) 3198 memcpy(skb_put(skb, extra_ies_len), extra_ies, extra_ies_len); 3199 3200 /* the TDLS link IE is always added last */ 3201 switch (action_code) { 3202 case WLAN_TDLS_SETUP_REQUEST: 3203 case WLAN_TDLS_SETUP_CONFIRM: 3204 case WLAN_TDLS_TEARDOWN: 3205 case WLAN_TDLS_DISCOVERY_REQUEST: 3206 /* we are the initiator */ 3207 ieee80211_tdls_add_link_ie(skb, sdata->vif.addr, peer, 3208 sdata->u.mgd.bssid); 3209 break; 3210 case WLAN_TDLS_SETUP_RESPONSE: 3211 case WLAN_PUB_ACTION_TDLS_DISCOVER_RES: 3212 /* we are the responder */ 3213 ieee80211_tdls_add_link_ie(skb, peer, sdata->vif.addr, 3214 sdata->u.mgd.bssid); 3215 break; 3216 default: 3217 ret = -ENOTSUPP; 3218 goto fail; 3219 } 3220 3221 if (send_direct) { 3222 ieee80211_tx_skb(sdata, skb); 3223 return 0; 3224 } 3225 3226 /* 3227 * According to 802.11z: Setup req/resp are sent in AC_BK, otherwise 3228 * we should default to AC_VI. 3229 */ 3230 switch (action_code) { 3231 case WLAN_TDLS_SETUP_REQUEST: 3232 case WLAN_TDLS_SETUP_RESPONSE: 3233 skb_set_queue_mapping(skb, IEEE80211_AC_BK); 3234 skb->priority = 2; 3235 break; 3236 default: 3237 skb_set_queue_mapping(skb, IEEE80211_AC_VI); 3238 skb->priority = 5; 3239 break; 3240 } 3241 3242 /* disable bottom halves when entering the Tx path */ 3243 local_bh_disable(); 3244 ret = ieee80211_subif_start_xmit(skb, dev); 3245 local_bh_enable(); 3246 3247 return ret; 3248 3249 fail: 3250 dev_kfree_skb(skb); 3251 return ret; 3252 } 3253 3254 static int ieee80211_tdls_oper(struct wiphy *wiphy, struct net_device *dev, 3255 u8 *peer, enum nl80211_tdls_operation oper) 3256 { 3257 struct sta_info *sta; 3258 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 3259 3260 if (!(wiphy->flags & WIPHY_FLAG_SUPPORTS_TDLS)) 3261 return -ENOTSUPP; 3262 3263 if (sdata->vif.type != NL80211_IFTYPE_STATION) 3264 return -EINVAL; 3265 3266 tdls_dbg(sdata, "TDLS oper %d peer %pM\n", oper, peer); 3267 3268 switch (oper) { 3269 case NL80211_TDLS_ENABLE_LINK: 3270 rcu_read_lock(); 3271 sta = sta_info_get(sdata, peer); 3272 if (!sta) { 3273 rcu_read_unlock(); 3274 return -ENOLINK; 3275 } 3276 3277 set_sta_flag(sta, WLAN_STA_TDLS_PEER_AUTH); 3278 rcu_read_unlock(); 3279 break; 3280 case NL80211_TDLS_DISABLE_LINK: 3281 return sta_info_destroy_addr(sdata, peer); 3282 case NL80211_TDLS_TEARDOWN: 3283 case NL80211_TDLS_SETUP: 3284 case NL80211_TDLS_DISCOVERY_REQ: 3285 /* We don't support in-driver setup/teardown/discovery */ 3286 return -ENOTSUPP; 3287 default: 3288 return -ENOTSUPP; 3289 } 3290 3291 return 0; 3292 } 3293 3294 static int ieee80211_probe_client(struct wiphy *wiphy, struct net_device *dev, 3295 const u8 *peer, u64 *cookie) 3296 { 3297 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 3298 struct ieee80211_local *local = sdata->local; 3299 struct ieee80211_qos_hdr *nullfunc; 3300 struct sk_buff *skb; 3301 int size = sizeof(*nullfunc); 3302 __le16 fc; 3303 bool qos; 3304 struct ieee80211_tx_info *info; 3305 struct sta_info *sta; 3306 struct ieee80211_chanctx_conf *chanctx_conf; 3307 enum ieee80211_band band; 3308 3309 rcu_read_lock(); 3310 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); 3311 if (WARN_ON(!chanctx_conf)) { 3312 rcu_read_unlock(); 3313 return -EINVAL; 3314 } 3315 band = chanctx_conf->def.chan->band; 3316 sta = sta_info_get(sdata, peer); 3317 if (sta) { 3318 qos = test_sta_flag(sta, WLAN_STA_WME); 3319 } else { 3320 rcu_read_unlock(); 3321 return -ENOLINK; 3322 } 3323 3324 if (qos) { 3325 fc = cpu_to_le16(IEEE80211_FTYPE_DATA | 3326 IEEE80211_STYPE_QOS_NULLFUNC | 3327 IEEE80211_FCTL_FROMDS); 3328 } else { 3329 size -= 2; 3330 fc = cpu_to_le16(IEEE80211_FTYPE_DATA | 3331 IEEE80211_STYPE_NULLFUNC | 3332 IEEE80211_FCTL_FROMDS); 3333 } 3334 3335 skb = dev_alloc_skb(local->hw.extra_tx_headroom + size); 3336 if (!skb) { 3337 rcu_read_unlock(); 3338 return -ENOMEM; 3339 } 3340 3341 skb->dev = dev; 3342 3343 skb_reserve(skb, local->hw.extra_tx_headroom); 3344 3345 nullfunc = (void *) skb_put(skb, size); 3346 nullfunc->frame_control = fc; 3347 nullfunc->duration_id = 0; 3348 memcpy(nullfunc->addr1, sta->sta.addr, ETH_ALEN); 3349 memcpy(nullfunc->addr2, sdata->vif.addr, ETH_ALEN); 3350 memcpy(nullfunc->addr3, sdata->vif.addr, ETH_ALEN); 3351 nullfunc->seq_ctrl = 0; 3352 3353 info = IEEE80211_SKB_CB(skb); 3354 3355 info->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS | 3356 IEEE80211_TX_INTFL_NL80211_FRAME_TX; 3357 3358 skb_set_queue_mapping(skb, IEEE80211_AC_VO); 3359 skb->priority = 7; 3360 if (qos) 3361 nullfunc->qos_ctrl = cpu_to_le16(7); 3362 3363 local_bh_disable(); 3364 ieee80211_xmit(sdata, skb, band); 3365 local_bh_enable(); 3366 rcu_read_unlock(); 3367 3368 *cookie = (unsigned long) skb; 3369 return 0; 3370 } 3371 3372 static int ieee80211_cfg_get_channel(struct wiphy *wiphy, 3373 struct wireless_dev *wdev, 3374 struct cfg80211_chan_def *chandef) 3375 { 3376 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 3377 struct ieee80211_local *local = wiphy_priv(wiphy); 3378 struct ieee80211_chanctx_conf *chanctx_conf; 3379 int ret = -ENODATA; 3380 3381 rcu_read_lock(); 3382 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); 3383 if (chanctx_conf) { 3384 *chandef = chanctx_conf->def; 3385 ret = 0; 3386 } else if (local->open_count > 0 && 3387 local->open_count == local->monitors && 3388 sdata->vif.type == NL80211_IFTYPE_MONITOR) { 3389 if (local->use_chanctx) 3390 *chandef = local->monitor_chandef; 3391 else 3392 *chandef = local->_oper_chandef; 3393 ret = 0; 3394 } 3395 rcu_read_unlock(); 3396 3397 return ret; 3398 } 3399 3400 #ifdef CONFIG_PM 3401 static void ieee80211_set_wakeup(struct wiphy *wiphy, bool enabled) 3402 { 3403 drv_set_wakeup(wiphy_priv(wiphy), enabled); 3404 } 3405 #endif 3406 3407 struct cfg80211_ops mac80211_config_ops = { 3408 .add_virtual_intf = ieee80211_add_iface, 3409 .del_virtual_intf = ieee80211_del_iface, 3410 .change_virtual_intf = ieee80211_change_iface, 3411 .start_p2p_device = ieee80211_start_p2p_device, 3412 .stop_p2p_device = ieee80211_stop_p2p_device, 3413 .add_key = ieee80211_add_key, 3414 .del_key = ieee80211_del_key, 3415 .get_key = ieee80211_get_key, 3416 .set_default_key = ieee80211_config_default_key, 3417 .set_default_mgmt_key = ieee80211_config_default_mgmt_key, 3418 .start_ap = ieee80211_start_ap, 3419 .change_beacon = ieee80211_change_beacon, 3420 .stop_ap = ieee80211_stop_ap, 3421 .add_station = ieee80211_add_station, 3422 .del_station = ieee80211_del_station, 3423 .change_station = ieee80211_change_station, 3424 .get_station = ieee80211_get_station, 3425 .dump_station = ieee80211_dump_station, 3426 .dump_survey = ieee80211_dump_survey, 3427 #ifdef CONFIG_MAC80211_MESH 3428 .add_mpath = ieee80211_add_mpath, 3429 .del_mpath = ieee80211_del_mpath, 3430 .change_mpath = ieee80211_change_mpath, 3431 .get_mpath = ieee80211_get_mpath, 3432 .dump_mpath = ieee80211_dump_mpath, 3433 .update_mesh_config = ieee80211_update_mesh_config, 3434 .get_mesh_config = ieee80211_get_mesh_config, 3435 .join_mesh = ieee80211_join_mesh, 3436 .leave_mesh = ieee80211_leave_mesh, 3437 #endif 3438 .change_bss = ieee80211_change_bss, 3439 .set_txq_params = ieee80211_set_txq_params, 3440 .set_monitor_channel = ieee80211_set_monitor_channel, 3441 .suspend = ieee80211_suspend, 3442 .resume = ieee80211_resume, 3443 .scan = ieee80211_scan, 3444 .sched_scan_start = ieee80211_sched_scan_start, 3445 .sched_scan_stop = ieee80211_sched_scan_stop, 3446 .auth = ieee80211_auth, 3447 .assoc = ieee80211_assoc, 3448 .deauth = ieee80211_deauth, 3449 .disassoc = ieee80211_disassoc, 3450 .join_ibss = ieee80211_join_ibss, 3451 .leave_ibss = ieee80211_leave_ibss, 3452 .set_mcast_rate = ieee80211_set_mcast_rate, 3453 .set_wiphy_params = ieee80211_set_wiphy_params, 3454 .set_tx_power = ieee80211_set_tx_power, 3455 .get_tx_power = ieee80211_get_tx_power, 3456 .set_wds_peer = ieee80211_set_wds_peer, 3457 .rfkill_poll = ieee80211_rfkill_poll, 3458 CFG80211_TESTMODE_CMD(ieee80211_testmode_cmd) 3459 CFG80211_TESTMODE_DUMP(ieee80211_testmode_dump) 3460 .set_power_mgmt = ieee80211_set_power_mgmt, 3461 .set_bitrate_mask = ieee80211_set_bitrate_mask, 3462 .remain_on_channel = ieee80211_remain_on_channel, 3463 .cancel_remain_on_channel = ieee80211_cancel_remain_on_channel, 3464 .mgmt_tx = ieee80211_mgmt_tx, 3465 .mgmt_tx_cancel_wait = ieee80211_mgmt_tx_cancel_wait, 3466 .set_cqm_rssi_config = ieee80211_set_cqm_rssi_config, 3467 .mgmt_frame_register = ieee80211_mgmt_frame_register, 3468 .set_antenna = ieee80211_set_antenna, 3469 .get_antenna = ieee80211_get_antenna, 3470 .set_ringparam = ieee80211_set_ringparam, 3471 .get_ringparam = ieee80211_get_ringparam, 3472 .set_rekey_data = ieee80211_set_rekey_data, 3473 .tdls_oper = ieee80211_tdls_oper, 3474 .tdls_mgmt = ieee80211_tdls_mgmt, 3475 .probe_client = ieee80211_probe_client, 3476 .set_noack_map = ieee80211_set_noack_map, 3477 #ifdef CONFIG_PM 3478 .set_wakeup = ieee80211_set_wakeup, 3479 #endif 3480 .get_et_sset_count = ieee80211_get_et_sset_count, 3481 .get_et_stats = ieee80211_get_et_stats, 3482 .get_et_strings = ieee80211_get_et_strings, 3483 .get_channel = ieee80211_cfg_get_channel, 3484 .start_radar_detection = ieee80211_start_radar_detection, 3485 }; 3486