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(sdata->local, 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 if (err) 218 ieee80211_key_free(sdata->local, key); 219 220 out_unlock: 221 mutex_unlock(&sdata->local->sta_mtx); 222 223 return err; 224 } 225 226 static int ieee80211_del_key(struct wiphy *wiphy, struct net_device *dev, 227 u8 key_idx, bool pairwise, const u8 *mac_addr) 228 { 229 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 230 struct ieee80211_local *local = sdata->local; 231 struct sta_info *sta; 232 struct ieee80211_key *key = NULL; 233 int ret; 234 235 mutex_lock(&local->sta_mtx); 236 mutex_lock(&local->key_mtx); 237 238 if (mac_addr) { 239 ret = -ENOENT; 240 241 sta = sta_info_get_bss(sdata, mac_addr); 242 if (!sta) 243 goto out_unlock; 244 245 if (pairwise) 246 key = key_mtx_dereference(local, sta->ptk); 247 else 248 key = key_mtx_dereference(local, sta->gtk[key_idx]); 249 } else 250 key = key_mtx_dereference(local, sdata->keys[key_idx]); 251 252 if (!key) { 253 ret = -ENOENT; 254 goto out_unlock; 255 } 256 257 __ieee80211_key_free(key); 258 259 ret = 0; 260 out_unlock: 261 mutex_unlock(&local->key_mtx); 262 mutex_unlock(&local->sta_mtx); 263 264 return ret; 265 } 266 267 static int ieee80211_get_key(struct wiphy *wiphy, struct net_device *dev, 268 u8 key_idx, bool pairwise, const u8 *mac_addr, 269 void *cookie, 270 void (*callback)(void *cookie, 271 struct key_params *params)) 272 { 273 struct ieee80211_sub_if_data *sdata; 274 struct sta_info *sta = NULL; 275 u8 seq[6] = {0}; 276 struct key_params params; 277 struct ieee80211_key *key = NULL; 278 u64 pn64; 279 u32 iv32; 280 u16 iv16; 281 int err = -ENOENT; 282 283 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 284 285 rcu_read_lock(); 286 287 if (mac_addr) { 288 sta = sta_info_get_bss(sdata, mac_addr); 289 if (!sta) 290 goto out; 291 292 if (pairwise) 293 key = rcu_dereference(sta->ptk); 294 else if (key_idx < NUM_DEFAULT_KEYS) 295 key = rcu_dereference(sta->gtk[key_idx]); 296 } else 297 key = rcu_dereference(sdata->keys[key_idx]); 298 299 if (!key) 300 goto out; 301 302 memset(¶ms, 0, sizeof(params)); 303 304 params.cipher = key->conf.cipher; 305 306 switch (key->conf.cipher) { 307 case WLAN_CIPHER_SUITE_TKIP: 308 iv32 = key->u.tkip.tx.iv32; 309 iv16 = key->u.tkip.tx.iv16; 310 311 if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE) 312 drv_get_tkip_seq(sdata->local, 313 key->conf.hw_key_idx, 314 &iv32, &iv16); 315 316 seq[0] = iv16 & 0xff; 317 seq[1] = (iv16 >> 8) & 0xff; 318 seq[2] = iv32 & 0xff; 319 seq[3] = (iv32 >> 8) & 0xff; 320 seq[4] = (iv32 >> 16) & 0xff; 321 seq[5] = (iv32 >> 24) & 0xff; 322 params.seq = seq; 323 params.seq_len = 6; 324 break; 325 case WLAN_CIPHER_SUITE_CCMP: 326 pn64 = atomic64_read(&key->u.ccmp.tx_pn); 327 seq[0] = pn64; 328 seq[1] = pn64 >> 8; 329 seq[2] = pn64 >> 16; 330 seq[3] = pn64 >> 24; 331 seq[4] = pn64 >> 32; 332 seq[5] = pn64 >> 40; 333 params.seq = seq; 334 params.seq_len = 6; 335 break; 336 case WLAN_CIPHER_SUITE_AES_CMAC: 337 pn64 = atomic64_read(&key->u.aes_cmac.tx_pn); 338 seq[0] = pn64; 339 seq[1] = pn64 >> 8; 340 seq[2] = pn64 >> 16; 341 seq[3] = pn64 >> 24; 342 seq[4] = pn64 >> 32; 343 seq[5] = pn64 >> 40; 344 params.seq = seq; 345 params.seq_len = 6; 346 break; 347 } 348 349 params.key = key->conf.key; 350 params.key_len = key->conf.keylen; 351 352 callback(cookie, ¶ms); 353 err = 0; 354 355 out: 356 rcu_read_unlock(); 357 return err; 358 } 359 360 static int ieee80211_config_default_key(struct wiphy *wiphy, 361 struct net_device *dev, 362 u8 key_idx, bool uni, 363 bool multi) 364 { 365 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 366 367 ieee80211_set_default_key(sdata, key_idx, uni, multi); 368 369 return 0; 370 } 371 372 static int ieee80211_config_default_mgmt_key(struct wiphy *wiphy, 373 struct net_device *dev, 374 u8 key_idx) 375 { 376 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 377 378 ieee80211_set_default_mgmt_key(sdata, key_idx); 379 380 return 0; 381 } 382 383 void sta_set_rate_info_tx(struct sta_info *sta, 384 const struct ieee80211_tx_rate *rate, 385 struct rate_info *rinfo) 386 { 387 rinfo->flags = 0; 388 if (rate->flags & IEEE80211_TX_RC_MCS) { 389 rinfo->flags |= RATE_INFO_FLAGS_MCS; 390 rinfo->mcs = rate->idx; 391 } else if (rate->flags & IEEE80211_TX_RC_VHT_MCS) { 392 rinfo->flags |= RATE_INFO_FLAGS_VHT_MCS; 393 rinfo->mcs = ieee80211_rate_get_vht_mcs(rate); 394 rinfo->nss = ieee80211_rate_get_vht_nss(rate); 395 } else { 396 struct ieee80211_supported_band *sband; 397 sband = sta->local->hw.wiphy->bands[ 398 ieee80211_get_sdata_band(sta->sdata)]; 399 rinfo->legacy = sband->bitrates[rate->idx].bitrate; 400 } 401 if (rate->flags & IEEE80211_TX_RC_40_MHZ_WIDTH) 402 rinfo->flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH; 403 if (rate->flags & IEEE80211_TX_RC_80_MHZ_WIDTH) 404 rinfo->flags |= RATE_INFO_FLAGS_80_MHZ_WIDTH; 405 if (rate->flags & IEEE80211_TX_RC_160_MHZ_WIDTH) 406 rinfo->flags |= RATE_INFO_FLAGS_160_MHZ_WIDTH; 407 if (rate->flags & IEEE80211_TX_RC_SHORT_GI) 408 rinfo->flags |= RATE_INFO_FLAGS_SHORT_GI; 409 } 410 411 void sta_set_rate_info_rx(struct sta_info *sta, struct rate_info *rinfo) 412 { 413 rinfo->flags = 0; 414 415 if (sta->last_rx_rate_flag & RX_FLAG_HT) { 416 rinfo->flags |= RATE_INFO_FLAGS_MCS; 417 rinfo->mcs = sta->last_rx_rate_idx; 418 } else if (sta->last_rx_rate_flag & RX_FLAG_VHT) { 419 rinfo->flags |= RATE_INFO_FLAGS_VHT_MCS; 420 rinfo->nss = sta->last_rx_rate_vht_nss; 421 rinfo->mcs = sta->last_rx_rate_idx; 422 } else { 423 struct ieee80211_supported_band *sband; 424 425 sband = sta->local->hw.wiphy->bands[ 426 ieee80211_get_sdata_band(sta->sdata)]; 427 rinfo->legacy = 428 sband->bitrates[sta->last_rx_rate_idx].bitrate; 429 } 430 431 if (sta->last_rx_rate_flag & RX_FLAG_40MHZ) 432 rinfo->flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH; 433 if (sta->last_rx_rate_flag & RX_FLAG_SHORT_GI) 434 rinfo->flags |= RATE_INFO_FLAGS_SHORT_GI; 435 if (sta->last_rx_rate_flag & RX_FLAG_80MHZ) 436 rinfo->flags |= RATE_INFO_FLAGS_80_MHZ_WIDTH; 437 if (sta->last_rx_rate_flag & RX_FLAG_80P80MHZ) 438 rinfo->flags |= RATE_INFO_FLAGS_80P80_MHZ_WIDTH; 439 if (sta->last_rx_rate_flag & RX_FLAG_160MHZ) 440 rinfo->flags |= RATE_INFO_FLAGS_160_MHZ_WIDTH; 441 } 442 443 static void sta_set_sinfo(struct sta_info *sta, struct station_info *sinfo) 444 { 445 struct ieee80211_sub_if_data *sdata = sta->sdata; 446 struct ieee80211_local *local = sdata->local; 447 struct timespec uptime; 448 449 sinfo->generation = sdata->local->sta_generation; 450 451 sinfo->filled = STATION_INFO_INACTIVE_TIME | 452 STATION_INFO_RX_BYTES | 453 STATION_INFO_TX_BYTES | 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->rx_bytes = sta->rx_bytes; 471 sinfo->tx_bytes = sta->tx_bytes; 472 sinfo->rx_packets = sta->rx_packets; 473 sinfo->tx_packets = sta->tx_packets; 474 sinfo->tx_retries = sta->tx_retry_count; 475 sinfo->tx_failed = sta->tx_retry_failed; 476 sinfo->rx_dropped_misc = sta->rx_dropped; 477 sinfo->beacon_loss_count = sta->beacon_loss_count; 478 479 if ((sta->local->hw.flags & IEEE80211_HW_SIGNAL_DBM) || 480 (sta->local->hw.flags & IEEE80211_HW_SIGNAL_UNSPEC)) { 481 sinfo->filled |= STATION_INFO_SIGNAL | STATION_INFO_SIGNAL_AVG; 482 if (!local->ops->get_rssi || 483 drv_get_rssi(local, sdata, &sta->sta, &sinfo->signal)) 484 sinfo->signal = (s8)sta->last_signal; 485 sinfo->signal_avg = (s8) -ewma_read(&sta->avg_signal); 486 } 487 488 sta_set_rate_info_tx(sta, &sta->last_tx_rate, &sinfo->txrate); 489 sta_set_rate_info_rx(sta, &sinfo->rxrate); 490 491 if (ieee80211_vif_is_mesh(&sdata->vif)) { 492 #ifdef CONFIG_MAC80211_MESH 493 sinfo->filled |= STATION_INFO_LLID | 494 STATION_INFO_PLID | 495 STATION_INFO_PLINK_STATE | 496 STATION_INFO_LOCAL_PM | 497 STATION_INFO_PEER_PM | 498 STATION_INFO_NONPEER_PM; 499 500 sinfo->llid = le16_to_cpu(sta->llid); 501 sinfo->plid = le16_to_cpu(sta->plid); 502 sinfo->plink_state = sta->plink_state; 503 if (test_sta_flag(sta, WLAN_STA_TOFFSET_KNOWN)) { 504 sinfo->filled |= STATION_INFO_T_OFFSET; 505 sinfo->t_offset = sta->t_offset; 506 } 507 sinfo->local_pm = sta->local_pm; 508 sinfo->peer_pm = sta->peer_pm; 509 sinfo->nonpeer_pm = sta->nonpeer_pm; 510 #endif 511 } 512 513 sinfo->bss_param.flags = 0; 514 if (sdata->vif.bss_conf.use_cts_prot) 515 sinfo->bss_param.flags |= BSS_PARAM_FLAGS_CTS_PROT; 516 if (sdata->vif.bss_conf.use_short_preamble) 517 sinfo->bss_param.flags |= BSS_PARAM_FLAGS_SHORT_PREAMBLE; 518 if (sdata->vif.bss_conf.use_short_slot) 519 sinfo->bss_param.flags |= BSS_PARAM_FLAGS_SHORT_SLOT_TIME; 520 sinfo->bss_param.dtim_period = sdata->local->hw.conf.ps_dtim_period; 521 sinfo->bss_param.beacon_interval = sdata->vif.bss_conf.beacon_int; 522 523 sinfo->sta_flags.set = 0; 524 sinfo->sta_flags.mask = BIT(NL80211_STA_FLAG_AUTHORIZED) | 525 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) | 526 BIT(NL80211_STA_FLAG_WME) | 527 BIT(NL80211_STA_FLAG_MFP) | 528 BIT(NL80211_STA_FLAG_AUTHENTICATED) | 529 BIT(NL80211_STA_FLAG_ASSOCIATED) | 530 BIT(NL80211_STA_FLAG_TDLS_PEER); 531 if (test_sta_flag(sta, WLAN_STA_AUTHORIZED)) 532 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_AUTHORIZED); 533 if (test_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE)) 534 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_SHORT_PREAMBLE); 535 if (test_sta_flag(sta, WLAN_STA_WME)) 536 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_WME); 537 if (test_sta_flag(sta, WLAN_STA_MFP)) 538 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_MFP); 539 if (test_sta_flag(sta, WLAN_STA_AUTH)) 540 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_AUTHENTICATED); 541 if (test_sta_flag(sta, WLAN_STA_ASSOC)) 542 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_ASSOCIATED); 543 if (test_sta_flag(sta, WLAN_STA_TDLS_PEER)) 544 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_TDLS_PEER); 545 } 546 547 static const char ieee80211_gstrings_sta_stats[][ETH_GSTRING_LEN] = { 548 "rx_packets", "rx_bytes", "wep_weak_iv_count", 549 "rx_duplicates", "rx_fragments", "rx_dropped", 550 "tx_packets", "tx_bytes", "tx_fragments", 551 "tx_filtered", "tx_retry_failed", "tx_retries", 552 "beacon_loss", "sta_state", "txrate", "rxrate", "signal", 553 "channel", "noise", "ch_time", "ch_time_busy", 554 "ch_time_ext_busy", "ch_time_rx", "ch_time_tx" 555 }; 556 #define STA_STATS_LEN ARRAY_SIZE(ieee80211_gstrings_sta_stats) 557 558 static int ieee80211_get_et_sset_count(struct wiphy *wiphy, 559 struct net_device *dev, 560 int sset) 561 { 562 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 563 int rv = 0; 564 565 if (sset == ETH_SS_STATS) 566 rv += STA_STATS_LEN; 567 568 rv += drv_get_et_sset_count(sdata, sset); 569 570 if (rv == 0) 571 return -EOPNOTSUPP; 572 return rv; 573 } 574 575 static void ieee80211_get_et_stats(struct wiphy *wiphy, 576 struct net_device *dev, 577 struct ethtool_stats *stats, 578 u64 *data) 579 { 580 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 581 struct ieee80211_chanctx_conf *chanctx_conf; 582 struct ieee80211_channel *channel; 583 struct sta_info *sta; 584 struct ieee80211_local *local = sdata->local; 585 struct station_info sinfo; 586 struct survey_info survey; 587 int i, q; 588 #define STA_STATS_SURVEY_LEN 7 589 590 memset(data, 0, sizeof(u64) * STA_STATS_LEN); 591 592 #define ADD_STA_STATS(sta) \ 593 do { \ 594 data[i++] += sta->rx_packets; \ 595 data[i++] += sta->rx_bytes; \ 596 data[i++] += sta->wep_weak_iv_count; \ 597 data[i++] += sta->num_duplicates; \ 598 data[i++] += sta->rx_fragments; \ 599 data[i++] += sta->rx_dropped; \ 600 \ 601 data[i++] += sta->tx_packets; \ 602 data[i++] += sta->tx_bytes; \ 603 data[i++] += sta->tx_fragments; \ 604 data[i++] += sta->tx_filtered_count; \ 605 data[i++] += sta->tx_retry_failed; \ 606 data[i++] += sta->tx_retry_count; \ 607 data[i++] += sta->beacon_loss_count; \ 608 } while (0) 609 610 /* For Managed stations, find the single station based on BSSID 611 * and use that. For interface types, iterate through all available 612 * stations and add stats for any station that is assigned to this 613 * network device. 614 */ 615 616 mutex_lock(&local->sta_mtx); 617 618 if (sdata->vif.type == NL80211_IFTYPE_STATION) { 619 sta = sta_info_get_bss(sdata, sdata->u.mgd.bssid); 620 621 if (!(sta && !WARN_ON(sta->sdata->dev != dev))) 622 goto do_survey; 623 624 i = 0; 625 ADD_STA_STATS(sta); 626 627 data[i++] = sta->sta_state; 628 629 sinfo.filled = 0; 630 sta_set_sinfo(sta, &sinfo); 631 632 if (sinfo.filled & STATION_INFO_TX_BITRATE) 633 data[i] = 100000 * 634 cfg80211_calculate_bitrate(&sinfo.txrate); 635 i++; 636 if (sinfo.filled & STATION_INFO_RX_BITRATE) 637 data[i] = 100000 * 638 cfg80211_calculate_bitrate(&sinfo.rxrate); 639 i++; 640 641 if (sinfo.filled & STATION_INFO_SIGNAL_AVG) 642 data[i] = (u8)sinfo.signal_avg; 643 i++; 644 } else { 645 list_for_each_entry(sta, &local->sta_list, list) { 646 /* Make sure this station belongs to the proper dev */ 647 if (sta->sdata->dev != dev) 648 continue; 649 650 i = 0; 651 ADD_STA_STATS(sta); 652 } 653 } 654 655 do_survey: 656 i = STA_STATS_LEN - STA_STATS_SURVEY_LEN; 657 /* Get survey stats for current channel */ 658 survey.filled = 0; 659 660 rcu_read_lock(); 661 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); 662 if (chanctx_conf) 663 channel = chanctx_conf->def.chan; 664 else 665 channel = NULL; 666 rcu_read_unlock(); 667 668 if (channel) { 669 q = 0; 670 do { 671 survey.filled = 0; 672 if (drv_get_survey(local, q, &survey) != 0) { 673 survey.filled = 0; 674 break; 675 } 676 q++; 677 } while (channel != survey.channel); 678 } 679 680 if (survey.filled) 681 data[i++] = survey.channel->center_freq; 682 else 683 data[i++] = 0; 684 if (survey.filled & SURVEY_INFO_NOISE_DBM) 685 data[i++] = (u8)survey.noise; 686 else 687 data[i++] = -1LL; 688 if (survey.filled & SURVEY_INFO_CHANNEL_TIME) 689 data[i++] = survey.channel_time; 690 else 691 data[i++] = -1LL; 692 if (survey.filled & SURVEY_INFO_CHANNEL_TIME_BUSY) 693 data[i++] = survey.channel_time_busy; 694 else 695 data[i++] = -1LL; 696 if (survey.filled & SURVEY_INFO_CHANNEL_TIME_EXT_BUSY) 697 data[i++] = survey.channel_time_ext_busy; 698 else 699 data[i++] = -1LL; 700 if (survey.filled & SURVEY_INFO_CHANNEL_TIME_RX) 701 data[i++] = survey.channel_time_rx; 702 else 703 data[i++] = -1LL; 704 if (survey.filled & SURVEY_INFO_CHANNEL_TIME_TX) 705 data[i++] = survey.channel_time_tx; 706 else 707 data[i++] = -1LL; 708 709 mutex_unlock(&local->sta_mtx); 710 711 if (WARN_ON(i != STA_STATS_LEN)) 712 return; 713 714 drv_get_et_stats(sdata, stats, &(data[STA_STATS_LEN])); 715 } 716 717 static void ieee80211_get_et_strings(struct wiphy *wiphy, 718 struct net_device *dev, 719 u32 sset, u8 *data) 720 { 721 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 722 int sz_sta_stats = 0; 723 724 if (sset == ETH_SS_STATS) { 725 sz_sta_stats = sizeof(ieee80211_gstrings_sta_stats); 726 memcpy(data, *ieee80211_gstrings_sta_stats, sz_sta_stats); 727 } 728 drv_get_et_strings(sdata, sset, &(data[sz_sta_stats])); 729 } 730 731 static int ieee80211_dump_station(struct wiphy *wiphy, struct net_device *dev, 732 int idx, u8 *mac, struct station_info *sinfo) 733 { 734 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 735 struct ieee80211_local *local = sdata->local; 736 struct sta_info *sta; 737 int ret = -ENOENT; 738 739 mutex_lock(&local->sta_mtx); 740 741 sta = sta_info_get_by_idx(sdata, idx); 742 if (sta) { 743 ret = 0; 744 memcpy(mac, sta->sta.addr, ETH_ALEN); 745 sta_set_sinfo(sta, sinfo); 746 } 747 748 mutex_unlock(&local->sta_mtx); 749 750 return ret; 751 } 752 753 static int ieee80211_dump_survey(struct wiphy *wiphy, struct net_device *dev, 754 int idx, struct survey_info *survey) 755 { 756 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); 757 758 return drv_get_survey(local, idx, survey); 759 } 760 761 static int ieee80211_get_station(struct wiphy *wiphy, struct net_device *dev, 762 u8 *mac, struct station_info *sinfo) 763 { 764 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 765 struct ieee80211_local *local = sdata->local; 766 struct sta_info *sta; 767 int ret = -ENOENT; 768 769 mutex_lock(&local->sta_mtx); 770 771 sta = sta_info_get_bss(sdata, mac); 772 if (sta) { 773 ret = 0; 774 sta_set_sinfo(sta, sinfo); 775 } 776 777 mutex_unlock(&local->sta_mtx); 778 779 return ret; 780 } 781 782 static int ieee80211_set_monitor_channel(struct wiphy *wiphy, 783 struct cfg80211_chan_def *chandef) 784 { 785 struct ieee80211_local *local = wiphy_priv(wiphy); 786 struct ieee80211_sub_if_data *sdata; 787 int ret = 0; 788 789 if (cfg80211_chandef_identical(&local->monitor_chandef, chandef)) 790 return 0; 791 792 mutex_lock(&local->iflist_mtx); 793 if (local->use_chanctx) { 794 sdata = rcu_dereference_protected( 795 local->monitor_sdata, 796 lockdep_is_held(&local->iflist_mtx)); 797 if (sdata) { 798 ieee80211_vif_release_channel(sdata); 799 ret = ieee80211_vif_use_channel(sdata, chandef, 800 IEEE80211_CHANCTX_EXCLUSIVE); 801 } 802 } else if (local->open_count == local->monitors) { 803 local->_oper_channel = chandef->chan; 804 local->_oper_channel_type = cfg80211_get_chandef_type(chandef); 805 ieee80211_hw_config(local, 0); 806 } 807 808 if (ret == 0) 809 local->monitor_chandef = *chandef; 810 mutex_unlock(&local->iflist_mtx); 811 812 return ret; 813 } 814 815 static int ieee80211_set_probe_resp(struct ieee80211_sub_if_data *sdata, 816 const u8 *resp, size_t resp_len) 817 { 818 struct probe_resp *new, *old; 819 820 if (!resp || !resp_len) 821 return 1; 822 823 old = rtnl_dereference(sdata->u.ap.probe_resp); 824 825 new = kzalloc(sizeof(struct probe_resp) + resp_len, GFP_KERNEL); 826 if (!new) 827 return -ENOMEM; 828 829 new->len = resp_len; 830 memcpy(new->data, resp, resp_len); 831 832 rcu_assign_pointer(sdata->u.ap.probe_resp, new); 833 if (old) 834 kfree_rcu(old, rcu_head); 835 836 return 0; 837 } 838 839 static int ieee80211_assign_beacon(struct ieee80211_sub_if_data *sdata, 840 struct cfg80211_beacon_data *params) 841 { 842 struct beacon_data *new, *old; 843 int new_head_len, new_tail_len; 844 int size, err; 845 u32 changed = BSS_CHANGED_BEACON; 846 847 old = rtnl_dereference(sdata->u.ap.beacon); 848 849 /* Need to have a beacon head if we don't have one yet */ 850 if (!params->head && !old) 851 return -EINVAL; 852 853 /* new or old head? */ 854 if (params->head) 855 new_head_len = params->head_len; 856 else 857 new_head_len = old->head_len; 858 859 /* new or old tail? */ 860 if (params->tail || !old) 861 /* params->tail_len will be zero for !params->tail */ 862 new_tail_len = params->tail_len; 863 else 864 new_tail_len = old->tail_len; 865 866 size = sizeof(*new) + new_head_len + new_tail_len; 867 868 new = kzalloc(size, GFP_KERNEL); 869 if (!new) 870 return -ENOMEM; 871 872 /* start filling the new info now */ 873 874 /* 875 * pointers go into the block we allocated, 876 * memory is | beacon_data | head | tail | 877 */ 878 new->head = ((u8 *) new) + sizeof(*new); 879 new->tail = new->head + new_head_len; 880 new->head_len = new_head_len; 881 new->tail_len = new_tail_len; 882 883 /* copy in head */ 884 if (params->head) 885 memcpy(new->head, params->head, new_head_len); 886 else 887 memcpy(new->head, old->head, new_head_len); 888 889 /* copy in optional tail */ 890 if (params->tail) 891 memcpy(new->tail, params->tail, new_tail_len); 892 else 893 if (old) 894 memcpy(new->tail, old->tail, new_tail_len); 895 896 err = ieee80211_set_probe_resp(sdata, params->probe_resp, 897 params->probe_resp_len); 898 if (err < 0) 899 return err; 900 if (err == 0) 901 changed |= BSS_CHANGED_AP_PROBE_RESP; 902 903 rcu_assign_pointer(sdata->u.ap.beacon, new); 904 905 if (old) 906 kfree_rcu(old, rcu_head); 907 908 return changed; 909 } 910 911 static int ieee80211_start_ap(struct wiphy *wiphy, struct net_device *dev, 912 struct cfg80211_ap_settings *params) 913 { 914 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 915 struct beacon_data *old; 916 struct ieee80211_sub_if_data *vlan; 917 u32 changed = BSS_CHANGED_BEACON_INT | 918 BSS_CHANGED_BEACON_ENABLED | 919 BSS_CHANGED_BEACON | 920 BSS_CHANGED_SSID | 921 BSS_CHANGED_P2P_PS; 922 int err; 923 924 old = rtnl_dereference(sdata->u.ap.beacon); 925 if (old) 926 return -EALREADY; 927 928 /* TODO: make hostapd tell us what it wants */ 929 sdata->smps_mode = IEEE80211_SMPS_OFF; 930 sdata->needed_rx_chains = sdata->local->rx_chains; 931 sdata->radar_required = params->radar_required; 932 933 err = ieee80211_vif_use_channel(sdata, ¶ms->chandef, 934 IEEE80211_CHANCTX_SHARED); 935 if (err) 936 return err; 937 ieee80211_vif_copy_chanctx_to_vlans(sdata, false); 938 939 /* 940 * Apply control port protocol, this allows us to 941 * not encrypt dynamic WEP control frames. 942 */ 943 sdata->control_port_protocol = params->crypto.control_port_ethertype; 944 sdata->control_port_no_encrypt = params->crypto.control_port_no_encrypt; 945 list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) { 946 vlan->control_port_protocol = 947 params->crypto.control_port_ethertype; 948 vlan->control_port_no_encrypt = 949 params->crypto.control_port_no_encrypt; 950 } 951 952 sdata->vif.bss_conf.beacon_int = params->beacon_interval; 953 sdata->vif.bss_conf.dtim_period = params->dtim_period; 954 sdata->vif.bss_conf.enable_beacon = true; 955 956 sdata->vif.bss_conf.ssid_len = params->ssid_len; 957 if (params->ssid_len) 958 memcpy(sdata->vif.bss_conf.ssid, params->ssid, 959 params->ssid_len); 960 sdata->vif.bss_conf.hidden_ssid = 961 (params->hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE); 962 963 sdata->vif.bss_conf.p2p_ctwindow = params->p2p_ctwindow; 964 sdata->vif.bss_conf.p2p_oppps = params->p2p_opp_ps; 965 966 err = ieee80211_assign_beacon(sdata, ¶ms->beacon); 967 if (err < 0) 968 return err; 969 changed |= err; 970 971 err = drv_start_ap(sdata->local, sdata); 972 if (err) { 973 old = rtnl_dereference(sdata->u.ap.beacon); 974 if (old) 975 kfree_rcu(old, rcu_head); 976 RCU_INIT_POINTER(sdata->u.ap.beacon, NULL); 977 return err; 978 } 979 980 ieee80211_bss_info_change_notify(sdata, changed); 981 982 netif_carrier_on(dev); 983 list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) 984 netif_carrier_on(vlan->dev); 985 986 return 0; 987 } 988 989 static int ieee80211_change_beacon(struct wiphy *wiphy, struct net_device *dev, 990 struct cfg80211_beacon_data *params) 991 { 992 struct ieee80211_sub_if_data *sdata; 993 struct beacon_data *old; 994 int err; 995 996 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 997 998 old = rtnl_dereference(sdata->u.ap.beacon); 999 if (!old) 1000 return -ENOENT; 1001 1002 err = ieee80211_assign_beacon(sdata, params); 1003 if (err < 0) 1004 return err; 1005 ieee80211_bss_info_change_notify(sdata, err); 1006 return 0; 1007 } 1008 1009 static int ieee80211_stop_ap(struct wiphy *wiphy, struct net_device *dev) 1010 { 1011 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1012 struct ieee80211_sub_if_data *vlan; 1013 struct ieee80211_local *local = sdata->local; 1014 struct beacon_data *old_beacon; 1015 struct probe_resp *old_probe_resp; 1016 1017 old_beacon = rtnl_dereference(sdata->u.ap.beacon); 1018 if (!old_beacon) 1019 return -ENOENT; 1020 old_probe_resp = rtnl_dereference(sdata->u.ap.probe_resp); 1021 1022 /* turn off carrier for this interface and dependent VLANs */ 1023 list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) 1024 netif_carrier_off(vlan->dev); 1025 netif_carrier_off(dev); 1026 1027 /* remove beacon and probe response */ 1028 RCU_INIT_POINTER(sdata->u.ap.beacon, NULL); 1029 RCU_INIT_POINTER(sdata->u.ap.probe_resp, NULL); 1030 kfree_rcu(old_beacon, rcu_head); 1031 if (old_probe_resp) 1032 kfree_rcu(old_probe_resp, rcu_head); 1033 1034 list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) 1035 sta_info_flush_defer(vlan); 1036 sta_info_flush_defer(sdata); 1037 rcu_barrier(); 1038 list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) 1039 sta_info_flush_cleanup(vlan); 1040 sta_info_flush_cleanup(sdata); 1041 1042 sdata->vif.bss_conf.enable_beacon = false; 1043 clear_bit(SDATA_STATE_OFFCHANNEL_BEACON_STOPPED, &sdata->state); 1044 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED); 1045 1046 drv_stop_ap(sdata->local, sdata); 1047 1048 /* free all potentially still buffered bcast frames */ 1049 local->total_ps_buffered -= skb_queue_len(&sdata->u.ap.ps.bc_buf); 1050 skb_queue_purge(&sdata->u.ap.ps.bc_buf); 1051 1052 ieee80211_vif_copy_chanctx_to_vlans(sdata, true); 1053 ieee80211_vif_release_channel(sdata); 1054 1055 return 0; 1056 } 1057 1058 /* Layer 2 Update frame (802.2 Type 1 LLC XID Update response) */ 1059 struct iapp_layer2_update { 1060 u8 da[ETH_ALEN]; /* broadcast */ 1061 u8 sa[ETH_ALEN]; /* STA addr */ 1062 __be16 len; /* 6 */ 1063 u8 dsap; /* 0 */ 1064 u8 ssap; /* 0 */ 1065 u8 control; 1066 u8 xid_info[3]; 1067 } __packed; 1068 1069 static void ieee80211_send_layer2_update(struct sta_info *sta) 1070 { 1071 struct iapp_layer2_update *msg; 1072 struct sk_buff *skb; 1073 1074 /* Send Level 2 Update Frame to update forwarding tables in layer 2 1075 * bridge devices */ 1076 1077 skb = dev_alloc_skb(sizeof(*msg)); 1078 if (!skb) 1079 return; 1080 msg = (struct iapp_layer2_update *)skb_put(skb, sizeof(*msg)); 1081 1082 /* 802.2 Type 1 Logical Link Control (LLC) Exchange Identifier (XID) 1083 * Update response frame; IEEE Std 802.2-1998, 5.4.1.2.1 */ 1084 1085 eth_broadcast_addr(msg->da); 1086 memcpy(msg->sa, sta->sta.addr, ETH_ALEN); 1087 msg->len = htons(6); 1088 msg->dsap = 0; 1089 msg->ssap = 0x01; /* NULL LSAP, CR Bit: Response */ 1090 msg->control = 0xaf; /* XID response lsb.1111F101. 1091 * F=0 (no poll command; unsolicited frame) */ 1092 msg->xid_info[0] = 0x81; /* XID format identifier */ 1093 msg->xid_info[1] = 1; /* LLC types/classes: Type 1 LLC */ 1094 msg->xid_info[2] = 0; /* XID sender's receive window size (RW) */ 1095 1096 skb->dev = sta->sdata->dev; 1097 skb->protocol = eth_type_trans(skb, sta->sdata->dev); 1098 memset(skb->cb, 0, sizeof(skb->cb)); 1099 netif_rx_ni(skb); 1100 } 1101 1102 static int sta_apply_auth_flags(struct ieee80211_local *local, 1103 struct sta_info *sta, 1104 u32 mask, u32 set) 1105 { 1106 int ret; 1107 1108 if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED) && 1109 set & BIT(NL80211_STA_FLAG_AUTHENTICATED) && 1110 !test_sta_flag(sta, WLAN_STA_AUTH)) { 1111 ret = sta_info_move_state(sta, IEEE80211_STA_AUTH); 1112 if (ret) 1113 return ret; 1114 } 1115 1116 if (mask & BIT(NL80211_STA_FLAG_ASSOCIATED) && 1117 set & BIT(NL80211_STA_FLAG_ASSOCIATED) && 1118 !test_sta_flag(sta, WLAN_STA_ASSOC)) { 1119 ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC); 1120 if (ret) 1121 return ret; 1122 } 1123 1124 if (mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) { 1125 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED)) 1126 ret = sta_info_move_state(sta, IEEE80211_STA_AUTHORIZED); 1127 else if (test_sta_flag(sta, WLAN_STA_AUTHORIZED)) 1128 ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC); 1129 else 1130 ret = 0; 1131 if (ret) 1132 return ret; 1133 } 1134 1135 if (mask & BIT(NL80211_STA_FLAG_ASSOCIATED) && 1136 !(set & BIT(NL80211_STA_FLAG_ASSOCIATED)) && 1137 test_sta_flag(sta, WLAN_STA_ASSOC)) { 1138 ret = sta_info_move_state(sta, IEEE80211_STA_AUTH); 1139 if (ret) 1140 return ret; 1141 } 1142 1143 if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED) && 1144 !(set & BIT(NL80211_STA_FLAG_AUTHENTICATED)) && 1145 test_sta_flag(sta, WLAN_STA_AUTH)) { 1146 ret = sta_info_move_state(sta, IEEE80211_STA_NONE); 1147 if (ret) 1148 return ret; 1149 } 1150 1151 return 0; 1152 } 1153 1154 static int sta_apply_parameters(struct ieee80211_local *local, 1155 struct sta_info *sta, 1156 struct station_parameters *params) 1157 { 1158 int ret = 0; 1159 u32 rates; 1160 int i, j; 1161 struct ieee80211_supported_band *sband; 1162 struct ieee80211_sub_if_data *sdata = sta->sdata; 1163 enum ieee80211_band band = ieee80211_get_sdata_band(sdata); 1164 u32 mask, set; 1165 1166 sband = local->hw.wiphy->bands[band]; 1167 1168 mask = params->sta_flags_mask; 1169 set = params->sta_flags_set; 1170 1171 if (ieee80211_vif_is_mesh(&sdata->vif)) { 1172 /* 1173 * In mesh mode, ASSOCIATED isn't part of the nl80211 1174 * API but must follow AUTHENTICATED for driver state. 1175 */ 1176 if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED)) 1177 mask |= BIT(NL80211_STA_FLAG_ASSOCIATED); 1178 if (set & BIT(NL80211_STA_FLAG_AUTHENTICATED)) 1179 set |= BIT(NL80211_STA_FLAG_ASSOCIATED); 1180 } 1181 1182 ret = sta_apply_auth_flags(local, sta, mask, set); 1183 if (ret) 1184 return ret; 1185 1186 if (mask & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE)) { 1187 if (set & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE)) 1188 set_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE); 1189 else 1190 clear_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE); 1191 } 1192 1193 if (mask & BIT(NL80211_STA_FLAG_WME)) { 1194 if (set & BIT(NL80211_STA_FLAG_WME)) { 1195 set_sta_flag(sta, WLAN_STA_WME); 1196 sta->sta.wme = true; 1197 } else { 1198 clear_sta_flag(sta, WLAN_STA_WME); 1199 sta->sta.wme = false; 1200 } 1201 } 1202 1203 if (mask & BIT(NL80211_STA_FLAG_MFP)) { 1204 if (set & BIT(NL80211_STA_FLAG_MFP)) 1205 set_sta_flag(sta, WLAN_STA_MFP); 1206 else 1207 clear_sta_flag(sta, WLAN_STA_MFP); 1208 } 1209 1210 if (mask & BIT(NL80211_STA_FLAG_TDLS_PEER)) { 1211 if (set & BIT(NL80211_STA_FLAG_TDLS_PEER)) 1212 set_sta_flag(sta, WLAN_STA_TDLS_PEER); 1213 else 1214 clear_sta_flag(sta, WLAN_STA_TDLS_PEER); 1215 } 1216 1217 if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD) { 1218 sta->sta.uapsd_queues = params->uapsd_queues; 1219 sta->sta.max_sp = params->max_sp; 1220 } 1221 1222 /* 1223 * cfg80211 validates this (1-2007) and allows setting the AID 1224 * only when creating a new station entry 1225 */ 1226 if (params->aid) 1227 sta->sta.aid = params->aid; 1228 1229 /* 1230 * Some of the following updates would be racy if called on an 1231 * existing station, via ieee80211_change_station(). However, 1232 * all such changes are rejected by cfg80211 except for updates 1233 * changing the supported rates on an existing but not yet used 1234 * TDLS peer. 1235 */ 1236 1237 if (params->listen_interval >= 0) 1238 sta->listen_interval = params->listen_interval; 1239 1240 if (params->supported_rates) { 1241 rates = 0; 1242 1243 for (i = 0; i < params->supported_rates_len; i++) { 1244 int rate = (params->supported_rates[i] & 0x7f) * 5; 1245 for (j = 0; j < sband->n_bitrates; j++) { 1246 if (sband->bitrates[j].bitrate == rate) 1247 rates |= BIT(j); 1248 } 1249 } 1250 sta->sta.supp_rates[band] = rates; 1251 } 1252 1253 if (params->ht_capa) 1254 ieee80211_ht_cap_ie_to_sta_ht_cap(sdata, sband, 1255 params->ht_capa, sta); 1256 1257 if (params->vht_capa) 1258 ieee80211_vht_cap_ie_to_sta_vht_cap(sdata, sband, 1259 params->vht_capa, sta); 1260 1261 if (ieee80211_vif_is_mesh(&sdata->vif)) { 1262 #ifdef CONFIG_MAC80211_MESH 1263 u32 changed = 0; 1264 if (sdata->u.mesh.security & IEEE80211_MESH_SEC_SECURED) { 1265 switch (params->plink_state) { 1266 case NL80211_PLINK_ESTAB: 1267 if (sta->plink_state != NL80211_PLINK_ESTAB) 1268 changed = mesh_plink_inc_estab_count( 1269 sdata); 1270 sta->plink_state = params->plink_state; 1271 1272 ieee80211_mps_sta_status_update(sta); 1273 changed |= ieee80211_mps_set_sta_local_pm(sta, 1274 sdata->u.mesh.mshcfg.power_mode); 1275 break; 1276 case NL80211_PLINK_LISTEN: 1277 case NL80211_PLINK_BLOCKED: 1278 case NL80211_PLINK_OPN_SNT: 1279 case NL80211_PLINK_OPN_RCVD: 1280 case NL80211_PLINK_CNF_RCVD: 1281 case NL80211_PLINK_HOLDING: 1282 if (sta->plink_state == NL80211_PLINK_ESTAB) 1283 changed = mesh_plink_dec_estab_count( 1284 sdata); 1285 sta->plink_state = params->plink_state; 1286 1287 ieee80211_mps_sta_status_update(sta); 1288 changed |= 1289 ieee80211_mps_local_status_update(sdata); 1290 break; 1291 default: 1292 /* nothing */ 1293 break; 1294 } 1295 } else { 1296 switch (params->plink_action) { 1297 case PLINK_ACTION_OPEN: 1298 changed |= mesh_plink_open(sta); 1299 break; 1300 case PLINK_ACTION_BLOCK: 1301 changed |= mesh_plink_block(sta); 1302 break; 1303 } 1304 } 1305 1306 if (params->local_pm) 1307 changed |= 1308 ieee80211_mps_set_sta_local_pm(sta, 1309 params->local_pm); 1310 ieee80211_bss_info_change_notify(sdata, changed); 1311 #endif 1312 } 1313 1314 return 0; 1315 } 1316 1317 static int ieee80211_add_station(struct wiphy *wiphy, struct net_device *dev, 1318 u8 *mac, struct station_parameters *params) 1319 { 1320 struct ieee80211_local *local = wiphy_priv(wiphy); 1321 struct sta_info *sta; 1322 struct ieee80211_sub_if_data *sdata; 1323 int err; 1324 int layer2_update; 1325 1326 if (params->vlan) { 1327 sdata = IEEE80211_DEV_TO_SUB_IF(params->vlan); 1328 1329 if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN && 1330 sdata->vif.type != NL80211_IFTYPE_AP) 1331 return -EINVAL; 1332 } else 1333 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1334 1335 if (ether_addr_equal(mac, sdata->vif.addr)) 1336 return -EINVAL; 1337 1338 if (is_multicast_ether_addr(mac)) 1339 return -EINVAL; 1340 1341 sta = sta_info_alloc(sdata, mac, GFP_KERNEL); 1342 if (!sta) 1343 return -ENOMEM; 1344 1345 /* 1346 * defaults -- if userspace wants something else we'll 1347 * change it accordingly in sta_apply_parameters() 1348 */ 1349 sta_info_pre_move_state(sta, IEEE80211_STA_AUTH); 1350 sta_info_pre_move_state(sta, IEEE80211_STA_ASSOC); 1351 1352 err = sta_apply_parameters(local, sta, params); 1353 if (err) { 1354 sta_info_free(local, sta); 1355 return err; 1356 } 1357 1358 /* 1359 * for TDLS, rate control should be initialized only when supported 1360 * rates are known. 1361 */ 1362 if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER)) 1363 rate_control_rate_init(sta); 1364 1365 layer2_update = sdata->vif.type == NL80211_IFTYPE_AP_VLAN || 1366 sdata->vif.type == NL80211_IFTYPE_AP; 1367 1368 err = sta_info_insert_rcu(sta); 1369 if (err) { 1370 rcu_read_unlock(); 1371 return err; 1372 } 1373 1374 if (layer2_update) 1375 ieee80211_send_layer2_update(sta); 1376 1377 rcu_read_unlock(); 1378 1379 return 0; 1380 } 1381 1382 static int ieee80211_del_station(struct wiphy *wiphy, struct net_device *dev, 1383 u8 *mac) 1384 { 1385 struct ieee80211_sub_if_data *sdata; 1386 1387 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1388 1389 if (mac) 1390 return sta_info_destroy_addr_bss(sdata, mac); 1391 1392 sta_info_flush(sdata); 1393 return 0; 1394 } 1395 1396 static int ieee80211_change_station(struct wiphy *wiphy, 1397 struct net_device *dev, 1398 u8 *mac, 1399 struct station_parameters *params) 1400 { 1401 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1402 struct ieee80211_local *local = wiphy_priv(wiphy); 1403 struct sta_info *sta; 1404 struct ieee80211_sub_if_data *vlansdata; 1405 int err; 1406 1407 mutex_lock(&local->sta_mtx); 1408 1409 sta = sta_info_get_bss(sdata, mac); 1410 if (!sta) { 1411 mutex_unlock(&local->sta_mtx); 1412 return -ENOENT; 1413 } 1414 1415 /* in station mode, some updates are only valid with TDLS */ 1416 if (sdata->vif.type == NL80211_IFTYPE_STATION && 1417 (params->supported_rates || params->ht_capa || params->vht_capa || 1418 params->sta_modify_mask || 1419 (params->sta_flags_mask & BIT(NL80211_STA_FLAG_WME))) && 1420 !test_sta_flag(sta, WLAN_STA_TDLS_PEER)) { 1421 mutex_unlock(&local->sta_mtx); 1422 return -EINVAL; 1423 } 1424 1425 if (params->vlan && params->vlan != sta->sdata->dev) { 1426 bool prev_4addr = false; 1427 bool new_4addr = false; 1428 1429 vlansdata = IEEE80211_DEV_TO_SUB_IF(params->vlan); 1430 1431 if (vlansdata->vif.type != NL80211_IFTYPE_AP_VLAN && 1432 vlansdata->vif.type != NL80211_IFTYPE_AP) { 1433 mutex_unlock(&local->sta_mtx); 1434 return -EINVAL; 1435 } 1436 1437 if (params->vlan->ieee80211_ptr->use_4addr) { 1438 if (vlansdata->u.vlan.sta) { 1439 mutex_unlock(&local->sta_mtx); 1440 return -EBUSY; 1441 } 1442 1443 rcu_assign_pointer(vlansdata->u.vlan.sta, sta); 1444 new_4addr = true; 1445 } 1446 1447 if (sta->sdata->vif.type == NL80211_IFTYPE_AP_VLAN && 1448 sta->sdata->u.vlan.sta) { 1449 rcu_assign_pointer(sta->sdata->u.vlan.sta, NULL); 1450 prev_4addr = true; 1451 } 1452 1453 sta->sdata = vlansdata; 1454 1455 if (sta->sta_state == IEEE80211_STA_AUTHORIZED && 1456 prev_4addr != new_4addr) { 1457 if (new_4addr) 1458 atomic_dec(&sta->sdata->bss->num_mcast_sta); 1459 else 1460 atomic_inc(&sta->sdata->bss->num_mcast_sta); 1461 } 1462 1463 ieee80211_send_layer2_update(sta); 1464 } 1465 1466 err = sta_apply_parameters(local, sta, params); 1467 if (err) { 1468 mutex_unlock(&local->sta_mtx); 1469 return err; 1470 } 1471 1472 if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) && params->supported_rates) 1473 rate_control_rate_init(sta); 1474 1475 mutex_unlock(&local->sta_mtx); 1476 1477 if (sdata->vif.type == NL80211_IFTYPE_STATION && 1478 params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) { 1479 ieee80211_recalc_ps(local, -1); 1480 ieee80211_recalc_ps_vif(sdata); 1481 } 1482 return 0; 1483 } 1484 1485 #ifdef CONFIG_MAC80211_MESH 1486 static int ieee80211_add_mpath(struct wiphy *wiphy, struct net_device *dev, 1487 u8 *dst, u8 *next_hop) 1488 { 1489 struct ieee80211_sub_if_data *sdata; 1490 struct mesh_path *mpath; 1491 struct sta_info *sta; 1492 int err; 1493 1494 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1495 1496 rcu_read_lock(); 1497 sta = sta_info_get(sdata, next_hop); 1498 if (!sta) { 1499 rcu_read_unlock(); 1500 return -ENOENT; 1501 } 1502 1503 err = mesh_path_add(sdata, dst); 1504 if (err) { 1505 rcu_read_unlock(); 1506 return err; 1507 } 1508 1509 mpath = mesh_path_lookup(sdata, dst); 1510 if (!mpath) { 1511 rcu_read_unlock(); 1512 return -ENXIO; 1513 } 1514 mesh_path_fix_nexthop(mpath, sta); 1515 1516 rcu_read_unlock(); 1517 return 0; 1518 } 1519 1520 static int ieee80211_del_mpath(struct wiphy *wiphy, struct net_device *dev, 1521 u8 *dst) 1522 { 1523 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1524 1525 if (dst) 1526 return mesh_path_del(sdata, dst); 1527 1528 mesh_path_flush_by_iface(sdata); 1529 return 0; 1530 } 1531 1532 static int ieee80211_change_mpath(struct wiphy *wiphy, 1533 struct net_device *dev, 1534 u8 *dst, u8 *next_hop) 1535 { 1536 struct ieee80211_sub_if_data *sdata; 1537 struct mesh_path *mpath; 1538 struct sta_info *sta; 1539 1540 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1541 1542 rcu_read_lock(); 1543 1544 sta = sta_info_get(sdata, next_hop); 1545 if (!sta) { 1546 rcu_read_unlock(); 1547 return -ENOENT; 1548 } 1549 1550 mpath = mesh_path_lookup(sdata, dst); 1551 if (!mpath) { 1552 rcu_read_unlock(); 1553 return -ENOENT; 1554 } 1555 1556 mesh_path_fix_nexthop(mpath, sta); 1557 1558 rcu_read_unlock(); 1559 return 0; 1560 } 1561 1562 static void mpath_set_pinfo(struct mesh_path *mpath, u8 *next_hop, 1563 struct mpath_info *pinfo) 1564 { 1565 struct sta_info *next_hop_sta = rcu_dereference(mpath->next_hop); 1566 1567 if (next_hop_sta) 1568 memcpy(next_hop, next_hop_sta->sta.addr, ETH_ALEN); 1569 else 1570 memset(next_hop, 0, ETH_ALEN); 1571 1572 memset(pinfo, 0, sizeof(*pinfo)); 1573 1574 pinfo->generation = mesh_paths_generation; 1575 1576 pinfo->filled = MPATH_INFO_FRAME_QLEN | 1577 MPATH_INFO_SN | 1578 MPATH_INFO_METRIC | 1579 MPATH_INFO_EXPTIME | 1580 MPATH_INFO_DISCOVERY_TIMEOUT | 1581 MPATH_INFO_DISCOVERY_RETRIES | 1582 MPATH_INFO_FLAGS; 1583 1584 pinfo->frame_qlen = mpath->frame_queue.qlen; 1585 pinfo->sn = mpath->sn; 1586 pinfo->metric = mpath->metric; 1587 if (time_before(jiffies, mpath->exp_time)) 1588 pinfo->exptime = jiffies_to_msecs(mpath->exp_time - jiffies); 1589 pinfo->discovery_timeout = 1590 jiffies_to_msecs(mpath->discovery_timeout); 1591 pinfo->discovery_retries = mpath->discovery_retries; 1592 if (mpath->flags & MESH_PATH_ACTIVE) 1593 pinfo->flags |= NL80211_MPATH_FLAG_ACTIVE; 1594 if (mpath->flags & MESH_PATH_RESOLVING) 1595 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING; 1596 if (mpath->flags & MESH_PATH_SN_VALID) 1597 pinfo->flags |= NL80211_MPATH_FLAG_SN_VALID; 1598 if (mpath->flags & MESH_PATH_FIXED) 1599 pinfo->flags |= NL80211_MPATH_FLAG_FIXED; 1600 if (mpath->flags & MESH_PATH_RESOLVED) 1601 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVED; 1602 } 1603 1604 static int ieee80211_get_mpath(struct wiphy *wiphy, struct net_device *dev, 1605 u8 *dst, u8 *next_hop, struct mpath_info *pinfo) 1606 1607 { 1608 struct ieee80211_sub_if_data *sdata; 1609 struct mesh_path *mpath; 1610 1611 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1612 1613 rcu_read_lock(); 1614 mpath = mesh_path_lookup(sdata, dst); 1615 if (!mpath) { 1616 rcu_read_unlock(); 1617 return -ENOENT; 1618 } 1619 memcpy(dst, mpath->dst, ETH_ALEN); 1620 mpath_set_pinfo(mpath, next_hop, pinfo); 1621 rcu_read_unlock(); 1622 return 0; 1623 } 1624 1625 static int ieee80211_dump_mpath(struct wiphy *wiphy, struct net_device *dev, 1626 int idx, u8 *dst, u8 *next_hop, 1627 struct mpath_info *pinfo) 1628 { 1629 struct ieee80211_sub_if_data *sdata; 1630 struct mesh_path *mpath; 1631 1632 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1633 1634 rcu_read_lock(); 1635 mpath = mesh_path_lookup_by_idx(sdata, idx); 1636 if (!mpath) { 1637 rcu_read_unlock(); 1638 return -ENOENT; 1639 } 1640 memcpy(dst, mpath->dst, ETH_ALEN); 1641 mpath_set_pinfo(mpath, next_hop, pinfo); 1642 rcu_read_unlock(); 1643 return 0; 1644 } 1645 1646 static int ieee80211_get_mesh_config(struct wiphy *wiphy, 1647 struct net_device *dev, 1648 struct mesh_config *conf) 1649 { 1650 struct ieee80211_sub_if_data *sdata; 1651 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1652 1653 memcpy(conf, &(sdata->u.mesh.mshcfg), sizeof(struct mesh_config)); 1654 return 0; 1655 } 1656 1657 static inline bool _chg_mesh_attr(enum nl80211_meshconf_params parm, u32 mask) 1658 { 1659 return (mask >> (parm-1)) & 0x1; 1660 } 1661 1662 static int copy_mesh_setup(struct ieee80211_if_mesh *ifmsh, 1663 const struct mesh_setup *setup) 1664 { 1665 u8 *new_ie; 1666 const u8 *old_ie; 1667 struct ieee80211_sub_if_data *sdata = container_of(ifmsh, 1668 struct ieee80211_sub_if_data, u.mesh); 1669 1670 /* allocate information elements */ 1671 new_ie = NULL; 1672 old_ie = ifmsh->ie; 1673 1674 if (setup->ie_len) { 1675 new_ie = kmemdup(setup->ie, setup->ie_len, 1676 GFP_KERNEL); 1677 if (!new_ie) 1678 return -ENOMEM; 1679 } 1680 ifmsh->ie_len = setup->ie_len; 1681 ifmsh->ie = new_ie; 1682 kfree(old_ie); 1683 1684 /* now copy the rest of the setup parameters */ 1685 ifmsh->mesh_id_len = setup->mesh_id_len; 1686 memcpy(ifmsh->mesh_id, setup->mesh_id, ifmsh->mesh_id_len); 1687 ifmsh->mesh_sp_id = setup->sync_method; 1688 ifmsh->mesh_pp_id = setup->path_sel_proto; 1689 ifmsh->mesh_pm_id = setup->path_metric; 1690 ifmsh->security = IEEE80211_MESH_SEC_NONE; 1691 if (setup->is_authenticated) 1692 ifmsh->security |= IEEE80211_MESH_SEC_AUTHED; 1693 if (setup->is_secure) 1694 ifmsh->security |= IEEE80211_MESH_SEC_SECURED; 1695 1696 /* mcast rate setting in Mesh Node */ 1697 memcpy(sdata->vif.bss_conf.mcast_rate, setup->mcast_rate, 1698 sizeof(setup->mcast_rate)); 1699 1700 sdata->vif.bss_conf.beacon_int = setup->beacon_interval; 1701 sdata->vif.bss_conf.dtim_period = setup->dtim_period; 1702 1703 return 0; 1704 } 1705 1706 static int ieee80211_update_mesh_config(struct wiphy *wiphy, 1707 struct net_device *dev, u32 mask, 1708 const struct mesh_config *nconf) 1709 { 1710 struct mesh_config *conf; 1711 struct ieee80211_sub_if_data *sdata; 1712 struct ieee80211_if_mesh *ifmsh; 1713 1714 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1715 ifmsh = &sdata->u.mesh; 1716 1717 /* Set the config options which we are interested in setting */ 1718 conf = &(sdata->u.mesh.mshcfg); 1719 if (_chg_mesh_attr(NL80211_MESHCONF_RETRY_TIMEOUT, mask)) 1720 conf->dot11MeshRetryTimeout = nconf->dot11MeshRetryTimeout; 1721 if (_chg_mesh_attr(NL80211_MESHCONF_CONFIRM_TIMEOUT, mask)) 1722 conf->dot11MeshConfirmTimeout = nconf->dot11MeshConfirmTimeout; 1723 if (_chg_mesh_attr(NL80211_MESHCONF_HOLDING_TIMEOUT, mask)) 1724 conf->dot11MeshHoldingTimeout = nconf->dot11MeshHoldingTimeout; 1725 if (_chg_mesh_attr(NL80211_MESHCONF_MAX_PEER_LINKS, mask)) 1726 conf->dot11MeshMaxPeerLinks = nconf->dot11MeshMaxPeerLinks; 1727 if (_chg_mesh_attr(NL80211_MESHCONF_MAX_RETRIES, mask)) 1728 conf->dot11MeshMaxRetries = nconf->dot11MeshMaxRetries; 1729 if (_chg_mesh_attr(NL80211_MESHCONF_TTL, mask)) 1730 conf->dot11MeshTTL = nconf->dot11MeshTTL; 1731 if (_chg_mesh_attr(NL80211_MESHCONF_ELEMENT_TTL, mask)) 1732 conf->element_ttl = nconf->element_ttl; 1733 if (_chg_mesh_attr(NL80211_MESHCONF_AUTO_OPEN_PLINKS, mask)) 1734 conf->auto_open_plinks = nconf->auto_open_plinks; 1735 if (_chg_mesh_attr(NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR, mask)) 1736 conf->dot11MeshNbrOffsetMaxNeighbor = 1737 nconf->dot11MeshNbrOffsetMaxNeighbor; 1738 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES, mask)) 1739 conf->dot11MeshHWMPmaxPREQretries = 1740 nconf->dot11MeshHWMPmaxPREQretries; 1741 if (_chg_mesh_attr(NL80211_MESHCONF_PATH_REFRESH_TIME, mask)) 1742 conf->path_refresh_time = nconf->path_refresh_time; 1743 if (_chg_mesh_attr(NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT, mask)) 1744 conf->min_discovery_timeout = nconf->min_discovery_timeout; 1745 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT, mask)) 1746 conf->dot11MeshHWMPactivePathTimeout = 1747 nconf->dot11MeshHWMPactivePathTimeout; 1748 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL, mask)) 1749 conf->dot11MeshHWMPpreqMinInterval = 1750 nconf->dot11MeshHWMPpreqMinInterval; 1751 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL, mask)) 1752 conf->dot11MeshHWMPperrMinInterval = 1753 nconf->dot11MeshHWMPperrMinInterval; 1754 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME, 1755 mask)) 1756 conf->dot11MeshHWMPnetDiameterTraversalTime = 1757 nconf->dot11MeshHWMPnetDiameterTraversalTime; 1758 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOTMODE, mask)) { 1759 conf->dot11MeshHWMPRootMode = nconf->dot11MeshHWMPRootMode; 1760 ieee80211_mesh_root_setup(ifmsh); 1761 } 1762 if (_chg_mesh_attr(NL80211_MESHCONF_GATE_ANNOUNCEMENTS, mask)) { 1763 /* our current gate announcement implementation rides on root 1764 * announcements, so require this ifmsh to also be a root node 1765 * */ 1766 if (nconf->dot11MeshGateAnnouncementProtocol && 1767 !(conf->dot11MeshHWMPRootMode > IEEE80211_ROOTMODE_ROOT)) { 1768 conf->dot11MeshHWMPRootMode = IEEE80211_PROACTIVE_RANN; 1769 ieee80211_mesh_root_setup(ifmsh); 1770 } 1771 conf->dot11MeshGateAnnouncementProtocol = 1772 nconf->dot11MeshGateAnnouncementProtocol; 1773 } 1774 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_RANN_INTERVAL, mask)) 1775 conf->dot11MeshHWMPRannInterval = 1776 nconf->dot11MeshHWMPRannInterval; 1777 if (_chg_mesh_attr(NL80211_MESHCONF_FORWARDING, mask)) 1778 conf->dot11MeshForwarding = nconf->dot11MeshForwarding; 1779 if (_chg_mesh_attr(NL80211_MESHCONF_RSSI_THRESHOLD, mask)) { 1780 /* our RSSI threshold implementation is supported only for 1781 * devices that report signal in dBm. 1782 */ 1783 if (!(sdata->local->hw.flags & IEEE80211_HW_SIGNAL_DBM)) 1784 return -ENOTSUPP; 1785 conf->rssi_threshold = nconf->rssi_threshold; 1786 } 1787 if (_chg_mesh_attr(NL80211_MESHCONF_HT_OPMODE, mask)) { 1788 conf->ht_opmode = nconf->ht_opmode; 1789 sdata->vif.bss_conf.ht_operation_mode = nconf->ht_opmode; 1790 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_HT); 1791 } 1792 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT, mask)) 1793 conf->dot11MeshHWMPactivePathToRootTimeout = 1794 nconf->dot11MeshHWMPactivePathToRootTimeout; 1795 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOT_INTERVAL, mask)) 1796 conf->dot11MeshHWMProotInterval = 1797 nconf->dot11MeshHWMProotInterval; 1798 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL, mask)) 1799 conf->dot11MeshHWMPconfirmationInterval = 1800 nconf->dot11MeshHWMPconfirmationInterval; 1801 if (_chg_mesh_attr(NL80211_MESHCONF_POWER_MODE, mask)) { 1802 conf->power_mode = nconf->power_mode; 1803 ieee80211_mps_local_status_update(sdata); 1804 } 1805 if (_chg_mesh_attr(NL80211_MESHCONF_AWAKE_WINDOW, mask)) 1806 conf->dot11MeshAwakeWindowDuration = 1807 nconf->dot11MeshAwakeWindowDuration; 1808 ieee80211_mbss_info_change_notify(sdata, BSS_CHANGED_BEACON); 1809 return 0; 1810 } 1811 1812 static int ieee80211_join_mesh(struct wiphy *wiphy, struct net_device *dev, 1813 const struct mesh_config *conf, 1814 const struct mesh_setup *setup) 1815 { 1816 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1817 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh; 1818 int err; 1819 1820 memcpy(&ifmsh->mshcfg, conf, sizeof(struct mesh_config)); 1821 err = copy_mesh_setup(ifmsh, setup); 1822 if (err) 1823 return err; 1824 1825 /* can mesh use other SMPS modes? */ 1826 sdata->smps_mode = IEEE80211_SMPS_OFF; 1827 sdata->needed_rx_chains = sdata->local->rx_chains; 1828 1829 err = ieee80211_vif_use_channel(sdata, &setup->chandef, 1830 IEEE80211_CHANCTX_SHARED); 1831 if (err) 1832 return err; 1833 1834 return ieee80211_start_mesh(sdata); 1835 } 1836 1837 static int ieee80211_leave_mesh(struct wiphy *wiphy, struct net_device *dev) 1838 { 1839 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1840 1841 ieee80211_stop_mesh(sdata); 1842 ieee80211_vif_release_channel(sdata); 1843 1844 return 0; 1845 } 1846 #endif 1847 1848 static int ieee80211_change_bss(struct wiphy *wiphy, 1849 struct net_device *dev, 1850 struct bss_parameters *params) 1851 { 1852 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1853 enum ieee80211_band band; 1854 u32 changed = 0; 1855 1856 if (!rtnl_dereference(sdata->u.ap.beacon)) 1857 return -ENOENT; 1858 1859 band = ieee80211_get_sdata_band(sdata); 1860 1861 if (params->use_cts_prot >= 0) { 1862 sdata->vif.bss_conf.use_cts_prot = params->use_cts_prot; 1863 changed |= BSS_CHANGED_ERP_CTS_PROT; 1864 } 1865 if (params->use_short_preamble >= 0) { 1866 sdata->vif.bss_conf.use_short_preamble = 1867 params->use_short_preamble; 1868 changed |= BSS_CHANGED_ERP_PREAMBLE; 1869 } 1870 1871 if (!sdata->vif.bss_conf.use_short_slot && 1872 band == IEEE80211_BAND_5GHZ) { 1873 sdata->vif.bss_conf.use_short_slot = true; 1874 changed |= BSS_CHANGED_ERP_SLOT; 1875 } 1876 1877 if (params->use_short_slot_time >= 0) { 1878 sdata->vif.bss_conf.use_short_slot = 1879 params->use_short_slot_time; 1880 changed |= BSS_CHANGED_ERP_SLOT; 1881 } 1882 1883 if (params->basic_rates) { 1884 int i, j; 1885 u32 rates = 0; 1886 struct ieee80211_supported_band *sband = wiphy->bands[band]; 1887 1888 for (i = 0; i < params->basic_rates_len; i++) { 1889 int rate = (params->basic_rates[i] & 0x7f) * 5; 1890 for (j = 0; j < sband->n_bitrates; j++) { 1891 if (sband->bitrates[j].bitrate == rate) 1892 rates |= BIT(j); 1893 } 1894 } 1895 sdata->vif.bss_conf.basic_rates = rates; 1896 changed |= BSS_CHANGED_BASIC_RATES; 1897 } 1898 1899 if (params->ap_isolate >= 0) { 1900 if (params->ap_isolate) 1901 sdata->flags |= IEEE80211_SDATA_DONT_BRIDGE_PACKETS; 1902 else 1903 sdata->flags &= ~IEEE80211_SDATA_DONT_BRIDGE_PACKETS; 1904 } 1905 1906 if (params->ht_opmode >= 0) { 1907 sdata->vif.bss_conf.ht_operation_mode = 1908 (u16) params->ht_opmode; 1909 changed |= BSS_CHANGED_HT; 1910 } 1911 1912 if (params->p2p_ctwindow >= 0) { 1913 sdata->vif.bss_conf.p2p_ctwindow = params->p2p_ctwindow; 1914 changed |= BSS_CHANGED_P2P_PS; 1915 } 1916 1917 if (params->p2p_opp_ps >= 0) { 1918 sdata->vif.bss_conf.p2p_oppps = params->p2p_opp_ps; 1919 changed |= BSS_CHANGED_P2P_PS; 1920 } 1921 1922 ieee80211_bss_info_change_notify(sdata, changed); 1923 1924 return 0; 1925 } 1926 1927 static int ieee80211_set_txq_params(struct wiphy *wiphy, 1928 struct net_device *dev, 1929 struct ieee80211_txq_params *params) 1930 { 1931 struct ieee80211_local *local = wiphy_priv(wiphy); 1932 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1933 struct ieee80211_tx_queue_params p; 1934 1935 if (!local->ops->conf_tx) 1936 return -EOPNOTSUPP; 1937 1938 if (local->hw.queues < IEEE80211_NUM_ACS) 1939 return -EOPNOTSUPP; 1940 1941 memset(&p, 0, sizeof(p)); 1942 p.aifs = params->aifs; 1943 p.cw_max = params->cwmax; 1944 p.cw_min = params->cwmin; 1945 p.txop = params->txop; 1946 1947 /* 1948 * Setting tx queue params disables u-apsd because it's only 1949 * called in master mode. 1950 */ 1951 p.uapsd = false; 1952 1953 sdata->tx_conf[params->ac] = p; 1954 if (drv_conf_tx(local, sdata, params->ac, &p)) { 1955 wiphy_debug(local->hw.wiphy, 1956 "failed to set TX queue parameters for AC %d\n", 1957 params->ac); 1958 return -EINVAL; 1959 } 1960 1961 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_QOS); 1962 1963 return 0; 1964 } 1965 1966 #ifdef CONFIG_PM 1967 static int ieee80211_suspend(struct wiphy *wiphy, 1968 struct cfg80211_wowlan *wowlan) 1969 { 1970 return __ieee80211_suspend(wiphy_priv(wiphy), wowlan); 1971 } 1972 1973 static int ieee80211_resume(struct wiphy *wiphy) 1974 { 1975 return __ieee80211_resume(wiphy_priv(wiphy)); 1976 } 1977 #else 1978 #define ieee80211_suspend NULL 1979 #define ieee80211_resume NULL 1980 #endif 1981 1982 static int ieee80211_scan(struct wiphy *wiphy, 1983 struct cfg80211_scan_request *req) 1984 { 1985 struct ieee80211_sub_if_data *sdata; 1986 1987 sdata = IEEE80211_WDEV_TO_SUB_IF(req->wdev); 1988 1989 switch (ieee80211_vif_type_p2p(&sdata->vif)) { 1990 case NL80211_IFTYPE_STATION: 1991 case NL80211_IFTYPE_ADHOC: 1992 case NL80211_IFTYPE_MESH_POINT: 1993 case NL80211_IFTYPE_P2P_CLIENT: 1994 case NL80211_IFTYPE_P2P_DEVICE: 1995 break; 1996 case NL80211_IFTYPE_P2P_GO: 1997 if (sdata->local->ops->hw_scan) 1998 break; 1999 /* 2000 * FIXME: implement NoA while scanning in software, 2001 * for now fall through to allow scanning only when 2002 * beaconing hasn't been configured yet 2003 */ 2004 case NL80211_IFTYPE_AP: 2005 /* 2006 * If the scan has been forced (and the driver supports 2007 * forcing), don't care about being beaconing already. 2008 * This will create problems to the attached stations (e.g. all 2009 * the frames sent while scanning on other channel will be 2010 * lost) 2011 */ 2012 if (sdata->u.ap.beacon && 2013 (!(wiphy->features & NL80211_FEATURE_AP_SCAN) || 2014 !(req->flags & NL80211_SCAN_FLAG_AP))) 2015 return -EOPNOTSUPP; 2016 break; 2017 default: 2018 return -EOPNOTSUPP; 2019 } 2020 2021 return ieee80211_request_scan(sdata, req); 2022 } 2023 2024 static int 2025 ieee80211_sched_scan_start(struct wiphy *wiphy, 2026 struct net_device *dev, 2027 struct cfg80211_sched_scan_request *req) 2028 { 2029 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2030 2031 if (!sdata->local->ops->sched_scan_start) 2032 return -EOPNOTSUPP; 2033 2034 return ieee80211_request_sched_scan_start(sdata, req); 2035 } 2036 2037 static int 2038 ieee80211_sched_scan_stop(struct wiphy *wiphy, struct net_device *dev) 2039 { 2040 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2041 2042 if (!sdata->local->ops->sched_scan_stop) 2043 return -EOPNOTSUPP; 2044 2045 return ieee80211_request_sched_scan_stop(sdata); 2046 } 2047 2048 static int ieee80211_auth(struct wiphy *wiphy, struct net_device *dev, 2049 struct cfg80211_auth_request *req) 2050 { 2051 return ieee80211_mgd_auth(IEEE80211_DEV_TO_SUB_IF(dev), req); 2052 } 2053 2054 static int ieee80211_assoc(struct wiphy *wiphy, struct net_device *dev, 2055 struct cfg80211_assoc_request *req) 2056 { 2057 return ieee80211_mgd_assoc(IEEE80211_DEV_TO_SUB_IF(dev), req); 2058 } 2059 2060 static int ieee80211_deauth(struct wiphy *wiphy, struct net_device *dev, 2061 struct cfg80211_deauth_request *req) 2062 { 2063 return ieee80211_mgd_deauth(IEEE80211_DEV_TO_SUB_IF(dev), req); 2064 } 2065 2066 static int ieee80211_disassoc(struct wiphy *wiphy, struct net_device *dev, 2067 struct cfg80211_disassoc_request *req) 2068 { 2069 return ieee80211_mgd_disassoc(IEEE80211_DEV_TO_SUB_IF(dev), req); 2070 } 2071 2072 static int ieee80211_join_ibss(struct wiphy *wiphy, struct net_device *dev, 2073 struct cfg80211_ibss_params *params) 2074 { 2075 return ieee80211_ibss_join(IEEE80211_DEV_TO_SUB_IF(dev), params); 2076 } 2077 2078 static int ieee80211_leave_ibss(struct wiphy *wiphy, struct net_device *dev) 2079 { 2080 return ieee80211_ibss_leave(IEEE80211_DEV_TO_SUB_IF(dev)); 2081 } 2082 2083 static int ieee80211_set_mcast_rate(struct wiphy *wiphy, struct net_device *dev, 2084 int rate[IEEE80211_NUM_BANDS]) 2085 { 2086 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2087 2088 memcpy(sdata->vif.bss_conf.mcast_rate, rate, 2089 sizeof(int) * IEEE80211_NUM_BANDS); 2090 2091 return 0; 2092 } 2093 2094 static int ieee80211_set_wiphy_params(struct wiphy *wiphy, u32 changed) 2095 { 2096 struct ieee80211_local *local = wiphy_priv(wiphy); 2097 int err; 2098 2099 if (changed & WIPHY_PARAM_FRAG_THRESHOLD) { 2100 err = drv_set_frag_threshold(local, wiphy->frag_threshold); 2101 2102 if (err) 2103 return err; 2104 } 2105 2106 if (changed & WIPHY_PARAM_COVERAGE_CLASS) { 2107 err = drv_set_coverage_class(local, wiphy->coverage_class); 2108 2109 if (err) 2110 return err; 2111 } 2112 2113 if (changed & WIPHY_PARAM_RTS_THRESHOLD) { 2114 err = drv_set_rts_threshold(local, wiphy->rts_threshold); 2115 2116 if (err) 2117 return err; 2118 } 2119 2120 if (changed & WIPHY_PARAM_RETRY_SHORT) { 2121 if (wiphy->retry_short > IEEE80211_MAX_TX_RETRY) 2122 return -EINVAL; 2123 local->hw.conf.short_frame_max_tx_count = wiphy->retry_short; 2124 } 2125 if (changed & WIPHY_PARAM_RETRY_LONG) { 2126 if (wiphy->retry_long > IEEE80211_MAX_TX_RETRY) 2127 return -EINVAL; 2128 local->hw.conf.long_frame_max_tx_count = wiphy->retry_long; 2129 } 2130 if (changed & 2131 (WIPHY_PARAM_RETRY_SHORT | WIPHY_PARAM_RETRY_LONG)) 2132 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_RETRY_LIMITS); 2133 2134 return 0; 2135 } 2136 2137 static int ieee80211_set_tx_power(struct wiphy *wiphy, 2138 struct wireless_dev *wdev, 2139 enum nl80211_tx_power_setting type, int mbm) 2140 { 2141 struct ieee80211_local *local = wiphy_priv(wiphy); 2142 struct ieee80211_sub_if_data *sdata; 2143 2144 if (wdev) { 2145 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 2146 2147 switch (type) { 2148 case NL80211_TX_POWER_AUTOMATIC: 2149 sdata->user_power_level = IEEE80211_UNSET_POWER_LEVEL; 2150 break; 2151 case NL80211_TX_POWER_LIMITED: 2152 case NL80211_TX_POWER_FIXED: 2153 if (mbm < 0 || (mbm % 100)) 2154 return -EOPNOTSUPP; 2155 sdata->user_power_level = MBM_TO_DBM(mbm); 2156 break; 2157 } 2158 2159 ieee80211_recalc_txpower(sdata); 2160 2161 return 0; 2162 } 2163 2164 switch (type) { 2165 case NL80211_TX_POWER_AUTOMATIC: 2166 local->user_power_level = IEEE80211_UNSET_POWER_LEVEL; 2167 break; 2168 case NL80211_TX_POWER_LIMITED: 2169 case NL80211_TX_POWER_FIXED: 2170 if (mbm < 0 || (mbm % 100)) 2171 return -EOPNOTSUPP; 2172 local->user_power_level = MBM_TO_DBM(mbm); 2173 break; 2174 } 2175 2176 mutex_lock(&local->iflist_mtx); 2177 list_for_each_entry(sdata, &local->interfaces, list) 2178 sdata->user_power_level = local->user_power_level; 2179 list_for_each_entry(sdata, &local->interfaces, list) 2180 ieee80211_recalc_txpower(sdata); 2181 mutex_unlock(&local->iflist_mtx); 2182 2183 return 0; 2184 } 2185 2186 static int ieee80211_get_tx_power(struct wiphy *wiphy, 2187 struct wireless_dev *wdev, 2188 int *dbm) 2189 { 2190 struct ieee80211_local *local = wiphy_priv(wiphy); 2191 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 2192 2193 if (!local->use_chanctx) 2194 *dbm = local->hw.conf.power_level; 2195 else 2196 *dbm = sdata->vif.bss_conf.txpower; 2197 2198 return 0; 2199 } 2200 2201 static int ieee80211_set_wds_peer(struct wiphy *wiphy, struct net_device *dev, 2202 const u8 *addr) 2203 { 2204 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2205 2206 memcpy(&sdata->u.wds.remote_addr, addr, ETH_ALEN); 2207 2208 return 0; 2209 } 2210 2211 static void ieee80211_rfkill_poll(struct wiphy *wiphy) 2212 { 2213 struct ieee80211_local *local = wiphy_priv(wiphy); 2214 2215 drv_rfkill_poll(local); 2216 } 2217 2218 #ifdef CONFIG_NL80211_TESTMODE 2219 static int ieee80211_testmode_cmd(struct wiphy *wiphy, void *data, int len) 2220 { 2221 struct ieee80211_local *local = wiphy_priv(wiphy); 2222 2223 if (!local->ops->testmode_cmd) 2224 return -EOPNOTSUPP; 2225 2226 return local->ops->testmode_cmd(&local->hw, data, len); 2227 } 2228 2229 static int ieee80211_testmode_dump(struct wiphy *wiphy, 2230 struct sk_buff *skb, 2231 struct netlink_callback *cb, 2232 void *data, int len) 2233 { 2234 struct ieee80211_local *local = wiphy_priv(wiphy); 2235 2236 if (!local->ops->testmode_dump) 2237 return -EOPNOTSUPP; 2238 2239 return local->ops->testmode_dump(&local->hw, skb, cb, data, len); 2240 } 2241 #endif 2242 2243 int __ieee80211_request_smps(struct ieee80211_sub_if_data *sdata, 2244 enum ieee80211_smps_mode smps_mode) 2245 { 2246 const u8 *ap; 2247 enum ieee80211_smps_mode old_req; 2248 int err; 2249 2250 lockdep_assert_held(&sdata->u.mgd.mtx); 2251 2252 old_req = sdata->u.mgd.req_smps; 2253 sdata->u.mgd.req_smps = smps_mode; 2254 2255 if (old_req == smps_mode && 2256 smps_mode != IEEE80211_SMPS_AUTOMATIC) 2257 return 0; 2258 2259 /* 2260 * If not associated, or current association is not an HT 2261 * association, there's no need to do anything, just store 2262 * the new value until we associate. 2263 */ 2264 if (!sdata->u.mgd.associated || 2265 sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_20_NOHT) 2266 return 0; 2267 2268 ap = sdata->u.mgd.associated->bssid; 2269 2270 if (smps_mode == IEEE80211_SMPS_AUTOMATIC) { 2271 if (sdata->u.mgd.powersave) 2272 smps_mode = IEEE80211_SMPS_DYNAMIC; 2273 else 2274 smps_mode = IEEE80211_SMPS_OFF; 2275 } 2276 2277 /* send SM PS frame to AP */ 2278 err = ieee80211_send_smps_action(sdata, smps_mode, 2279 ap, ap); 2280 if (err) 2281 sdata->u.mgd.req_smps = old_req; 2282 2283 return err; 2284 } 2285 2286 static int ieee80211_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev, 2287 bool enabled, int timeout) 2288 { 2289 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2290 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); 2291 2292 if (sdata->vif.type != NL80211_IFTYPE_STATION && 2293 sdata->vif.type != NL80211_IFTYPE_MESH_POINT) 2294 return -EOPNOTSUPP; 2295 2296 if (!(local->hw.flags & IEEE80211_HW_SUPPORTS_PS)) 2297 return -EOPNOTSUPP; 2298 2299 if (enabled == sdata->u.mgd.powersave && 2300 timeout == local->dynamic_ps_forced_timeout) 2301 return 0; 2302 2303 sdata->u.mgd.powersave = enabled; 2304 local->dynamic_ps_forced_timeout = timeout; 2305 2306 /* no change, but if automatic follow powersave */ 2307 mutex_lock(&sdata->u.mgd.mtx); 2308 __ieee80211_request_smps(sdata, sdata->u.mgd.req_smps); 2309 mutex_unlock(&sdata->u.mgd.mtx); 2310 2311 if (local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_PS) 2312 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS); 2313 2314 ieee80211_recalc_ps(local, -1); 2315 ieee80211_recalc_ps_vif(sdata); 2316 2317 return 0; 2318 } 2319 2320 static int ieee80211_set_cqm_rssi_config(struct wiphy *wiphy, 2321 struct net_device *dev, 2322 s32 rssi_thold, u32 rssi_hyst) 2323 { 2324 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2325 struct ieee80211_vif *vif = &sdata->vif; 2326 struct ieee80211_bss_conf *bss_conf = &vif->bss_conf; 2327 2328 if (rssi_thold == bss_conf->cqm_rssi_thold && 2329 rssi_hyst == bss_conf->cqm_rssi_hyst) 2330 return 0; 2331 2332 bss_conf->cqm_rssi_thold = rssi_thold; 2333 bss_conf->cqm_rssi_hyst = rssi_hyst; 2334 2335 /* tell the driver upon association, unless already associated */ 2336 if (sdata->u.mgd.associated && 2337 sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI) 2338 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_CQM); 2339 2340 return 0; 2341 } 2342 2343 static int ieee80211_set_bitrate_mask(struct wiphy *wiphy, 2344 struct net_device *dev, 2345 const u8 *addr, 2346 const struct cfg80211_bitrate_mask *mask) 2347 { 2348 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2349 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); 2350 int i, ret; 2351 2352 if (!ieee80211_sdata_running(sdata)) 2353 return -ENETDOWN; 2354 2355 if (local->hw.flags & IEEE80211_HW_HAS_RATE_CONTROL) { 2356 ret = drv_set_bitrate_mask(local, sdata, mask); 2357 if (ret) 2358 return ret; 2359 } 2360 2361 for (i = 0; i < IEEE80211_NUM_BANDS; i++) { 2362 sdata->rc_rateidx_mask[i] = mask->control[i].legacy; 2363 memcpy(sdata->rc_rateidx_mcs_mask[i], mask->control[i].mcs, 2364 sizeof(mask->control[i].mcs)); 2365 } 2366 2367 return 0; 2368 } 2369 2370 static int ieee80211_start_roc_work(struct ieee80211_local *local, 2371 struct ieee80211_sub_if_data *sdata, 2372 struct ieee80211_channel *channel, 2373 unsigned int duration, u64 *cookie, 2374 struct sk_buff *txskb) 2375 { 2376 struct ieee80211_roc_work *roc, *tmp; 2377 bool queued = false; 2378 int ret; 2379 2380 lockdep_assert_held(&local->mtx); 2381 2382 if (local->use_chanctx && !local->ops->remain_on_channel) 2383 return -EOPNOTSUPP; 2384 2385 roc = kzalloc(sizeof(*roc), GFP_KERNEL); 2386 if (!roc) 2387 return -ENOMEM; 2388 2389 roc->chan = channel; 2390 roc->duration = duration; 2391 roc->req_duration = duration; 2392 roc->frame = txskb; 2393 roc->mgmt_tx_cookie = (unsigned long)txskb; 2394 roc->sdata = sdata; 2395 INIT_DELAYED_WORK(&roc->work, ieee80211_sw_roc_work); 2396 INIT_LIST_HEAD(&roc->dependents); 2397 2398 /* if there's one pending or we're scanning, queue this one */ 2399 if (!list_empty(&local->roc_list) || 2400 local->scanning || local->radar_detect_enabled) 2401 goto out_check_combine; 2402 2403 /* if not HW assist, just queue & schedule work */ 2404 if (!local->ops->remain_on_channel) { 2405 ieee80211_queue_delayed_work(&local->hw, &roc->work, 0); 2406 goto out_queue; 2407 } 2408 2409 /* otherwise actually kick it off here (for error handling) */ 2410 2411 /* 2412 * If the duration is zero, then the driver 2413 * wouldn't actually do anything. Set it to 2414 * 10 for now. 2415 * 2416 * TODO: cancel the off-channel operation 2417 * when we get the SKB's TX status and 2418 * the wait time was zero before. 2419 */ 2420 if (!duration) 2421 duration = 10; 2422 2423 ret = drv_remain_on_channel(local, sdata, channel, duration); 2424 if (ret) { 2425 kfree(roc); 2426 return ret; 2427 } 2428 2429 roc->started = true; 2430 goto out_queue; 2431 2432 out_check_combine: 2433 list_for_each_entry(tmp, &local->roc_list, list) { 2434 if (tmp->chan != channel || tmp->sdata != sdata) 2435 continue; 2436 2437 /* 2438 * Extend this ROC if possible: 2439 * 2440 * If it hasn't started yet, just increase the duration 2441 * and add the new one to the list of dependents. 2442 */ 2443 if (!tmp->started) { 2444 list_add_tail(&roc->list, &tmp->dependents); 2445 tmp->duration = max(tmp->duration, roc->duration); 2446 queued = true; 2447 break; 2448 } 2449 2450 /* If it has already started, it's more difficult ... */ 2451 if (local->ops->remain_on_channel) { 2452 unsigned long j = jiffies; 2453 2454 /* 2455 * In the offloaded ROC case, if it hasn't begun, add 2456 * this new one to the dependent list to be handled 2457 * when the the master one begins. If it has begun, 2458 * check that there's still a minimum time left and 2459 * if so, start this one, transmitting the frame, but 2460 * add it to the list directly after this one with a 2461 * a reduced time so we'll ask the driver to execute 2462 * it right after finishing the previous one, in the 2463 * hope that it'll also be executed right afterwards, 2464 * effectively extending the old one. 2465 * If there's no minimum time left, just add it to the 2466 * normal list. 2467 */ 2468 if (!tmp->hw_begun) { 2469 list_add_tail(&roc->list, &tmp->dependents); 2470 queued = true; 2471 break; 2472 } 2473 2474 if (time_before(j + IEEE80211_ROC_MIN_LEFT, 2475 tmp->hw_start_time + 2476 msecs_to_jiffies(tmp->duration))) { 2477 int new_dur; 2478 2479 ieee80211_handle_roc_started(roc); 2480 2481 new_dur = roc->duration - 2482 jiffies_to_msecs(tmp->hw_start_time + 2483 msecs_to_jiffies( 2484 tmp->duration) - 2485 j); 2486 2487 if (new_dur > 0) { 2488 /* add right after tmp */ 2489 list_add(&roc->list, &tmp->list); 2490 } else { 2491 list_add_tail(&roc->list, 2492 &tmp->dependents); 2493 } 2494 queued = true; 2495 } 2496 } else if (del_timer_sync(&tmp->work.timer)) { 2497 unsigned long new_end; 2498 2499 /* 2500 * In the software ROC case, cancel the timer, if 2501 * that fails then the finish work is already 2502 * queued/pending and thus we queue the new ROC 2503 * normally, if that succeeds then we can extend 2504 * the timer duration and TX the frame (if any.) 2505 */ 2506 2507 list_add_tail(&roc->list, &tmp->dependents); 2508 queued = true; 2509 2510 new_end = jiffies + msecs_to_jiffies(roc->duration); 2511 2512 /* ok, it was started & we canceled timer */ 2513 if (time_after(new_end, tmp->work.timer.expires)) 2514 mod_timer(&tmp->work.timer, new_end); 2515 else 2516 add_timer(&tmp->work.timer); 2517 2518 ieee80211_handle_roc_started(roc); 2519 } 2520 break; 2521 } 2522 2523 out_queue: 2524 if (!queued) 2525 list_add_tail(&roc->list, &local->roc_list); 2526 2527 /* 2528 * cookie is either the roc cookie (for normal roc) 2529 * or the SKB (for mgmt TX) 2530 */ 2531 if (!txskb) { 2532 /* local->mtx protects this */ 2533 local->roc_cookie_counter++; 2534 roc->cookie = local->roc_cookie_counter; 2535 /* wow, you wrapped 64 bits ... more likely a bug */ 2536 if (WARN_ON(roc->cookie == 0)) { 2537 roc->cookie = 1; 2538 local->roc_cookie_counter++; 2539 } 2540 *cookie = roc->cookie; 2541 } else { 2542 *cookie = (unsigned long)txskb; 2543 } 2544 2545 return 0; 2546 } 2547 2548 static int ieee80211_remain_on_channel(struct wiphy *wiphy, 2549 struct wireless_dev *wdev, 2550 struct ieee80211_channel *chan, 2551 unsigned int duration, 2552 u64 *cookie) 2553 { 2554 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 2555 struct ieee80211_local *local = sdata->local; 2556 int ret; 2557 2558 mutex_lock(&local->mtx); 2559 ret = ieee80211_start_roc_work(local, sdata, chan, 2560 duration, cookie, NULL); 2561 mutex_unlock(&local->mtx); 2562 2563 return ret; 2564 } 2565 2566 static int ieee80211_cancel_roc(struct ieee80211_local *local, 2567 u64 cookie, bool mgmt_tx) 2568 { 2569 struct ieee80211_roc_work *roc, *tmp, *found = NULL; 2570 int ret; 2571 2572 mutex_lock(&local->mtx); 2573 list_for_each_entry_safe(roc, tmp, &local->roc_list, list) { 2574 struct ieee80211_roc_work *dep, *tmp2; 2575 2576 list_for_each_entry_safe(dep, tmp2, &roc->dependents, list) { 2577 if (!mgmt_tx && dep->cookie != cookie) 2578 continue; 2579 else if (mgmt_tx && dep->mgmt_tx_cookie != cookie) 2580 continue; 2581 /* found dependent item -- just remove it */ 2582 list_del(&dep->list); 2583 mutex_unlock(&local->mtx); 2584 2585 ieee80211_roc_notify_destroy(dep); 2586 return 0; 2587 } 2588 2589 if (!mgmt_tx && roc->cookie != cookie) 2590 continue; 2591 else if (mgmt_tx && roc->mgmt_tx_cookie != cookie) 2592 continue; 2593 2594 found = roc; 2595 break; 2596 } 2597 2598 if (!found) { 2599 mutex_unlock(&local->mtx); 2600 return -ENOENT; 2601 } 2602 2603 /* 2604 * We found the item to cancel, so do that. Note that it 2605 * may have dependents, which we also cancel (and send 2606 * the expired signal for.) Not doing so would be quite 2607 * tricky here, but we may need to fix it later. 2608 */ 2609 2610 if (local->ops->remain_on_channel) { 2611 if (found->started) { 2612 ret = drv_cancel_remain_on_channel(local); 2613 if (WARN_ON_ONCE(ret)) { 2614 mutex_unlock(&local->mtx); 2615 return ret; 2616 } 2617 } 2618 2619 list_del(&found->list); 2620 2621 if (found->started) 2622 ieee80211_start_next_roc(local); 2623 mutex_unlock(&local->mtx); 2624 2625 ieee80211_roc_notify_destroy(found); 2626 } else { 2627 /* work may be pending so use it all the time */ 2628 found->abort = true; 2629 ieee80211_queue_delayed_work(&local->hw, &found->work, 0); 2630 2631 mutex_unlock(&local->mtx); 2632 2633 /* work will clean up etc */ 2634 flush_delayed_work(&found->work); 2635 } 2636 2637 return 0; 2638 } 2639 2640 static int ieee80211_cancel_remain_on_channel(struct wiphy *wiphy, 2641 struct wireless_dev *wdev, 2642 u64 cookie) 2643 { 2644 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 2645 struct ieee80211_local *local = sdata->local; 2646 2647 return ieee80211_cancel_roc(local, cookie, false); 2648 } 2649 2650 static int ieee80211_start_radar_detection(struct wiphy *wiphy, 2651 struct net_device *dev, 2652 struct cfg80211_chan_def *chandef) 2653 { 2654 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2655 struct ieee80211_local *local = sdata->local; 2656 unsigned long timeout; 2657 int err; 2658 2659 if (!list_empty(&local->roc_list) || local->scanning) 2660 return -EBUSY; 2661 2662 /* whatever, but channel contexts should not complain about that one */ 2663 sdata->smps_mode = IEEE80211_SMPS_OFF; 2664 sdata->needed_rx_chains = local->rx_chains; 2665 sdata->radar_required = true; 2666 2667 mutex_lock(&local->iflist_mtx); 2668 err = ieee80211_vif_use_channel(sdata, chandef, 2669 IEEE80211_CHANCTX_SHARED); 2670 mutex_unlock(&local->iflist_mtx); 2671 if (err) 2672 return err; 2673 2674 timeout = msecs_to_jiffies(IEEE80211_DFS_MIN_CAC_TIME_MS); 2675 ieee80211_queue_delayed_work(&sdata->local->hw, 2676 &sdata->dfs_cac_timer_work, timeout); 2677 2678 return 0; 2679 } 2680 2681 static int ieee80211_mgmt_tx(struct wiphy *wiphy, struct wireless_dev *wdev, 2682 struct ieee80211_channel *chan, bool offchan, 2683 unsigned int wait, const u8 *buf, size_t len, 2684 bool no_cck, bool dont_wait_for_ack, u64 *cookie) 2685 { 2686 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 2687 struct ieee80211_local *local = sdata->local; 2688 struct sk_buff *skb; 2689 struct sta_info *sta; 2690 const struct ieee80211_mgmt *mgmt = (void *)buf; 2691 bool need_offchan = false; 2692 u32 flags; 2693 int ret; 2694 2695 if (dont_wait_for_ack) 2696 flags = IEEE80211_TX_CTL_NO_ACK; 2697 else 2698 flags = IEEE80211_TX_INTFL_NL80211_FRAME_TX | 2699 IEEE80211_TX_CTL_REQ_TX_STATUS; 2700 2701 if (no_cck) 2702 flags |= IEEE80211_TX_CTL_NO_CCK_RATE; 2703 2704 switch (sdata->vif.type) { 2705 case NL80211_IFTYPE_ADHOC: 2706 if (!sdata->vif.bss_conf.ibss_joined) 2707 need_offchan = true; 2708 /* fall through */ 2709 #ifdef CONFIG_MAC80211_MESH 2710 case NL80211_IFTYPE_MESH_POINT: 2711 if (ieee80211_vif_is_mesh(&sdata->vif) && 2712 !sdata->u.mesh.mesh_id_len) 2713 need_offchan = true; 2714 /* fall through */ 2715 #endif 2716 case NL80211_IFTYPE_AP: 2717 case NL80211_IFTYPE_AP_VLAN: 2718 case NL80211_IFTYPE_P2P_GO: 2719 if (sdata->vif.type != NL80211_IFTYPE_ADHOC && 2720 !ieee80211_vif_is_mesh(&sdata->vif) && 2721 !rcu_access_pointer(sdata->bss->beacon)) 2722 need_offchan = true; 2723 if (!ieee80211_is_action(mgmt->frame_control) || 2724 mgmt->u.action.category == WLAN_CATEGORY_PUBLIC) 2725 break; 2726 rcu_read_lock(); 2727 sta = sta_info_get(sdata, mgmt->da); 2728 rcu_read_unlock(); 2729 if (!sta) 2730 return -ENOLINK; 2731 break; 2732 case NL80211_IFTYPE_STATION: 2733 case NL80211_IFTYPE_P2P_CLIENT: 2734 if (!sdata->u.mgd.associated) 2735 need_offchan = true; 2736 break; 2737 case NL80211_IFTYPE_P2P_DEVICE: 2738 need_offchan = true; 2739 break; 2740 default: 2741 return -EOPNOTSUPP; 2742 } 2743 2744 mutex_lock(&local->mtx); 2745 2746 /* Check if the operating channel is the requested channel */ 2747 if (!need_offchan) { 2748 struct ieee80211_chanctx_conf *chanctx_conf; 2749 2750 rcu_read_lock(); 2751 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); 2752 2753 if (chanctx_conf) 2754 need_offchan = chan != chanctx_conf->def.chan; 2755 else 2756 need_offchan = true; 2757 rcu_read_unlock(); 2758 } 2759 2760 if (need_offchan && !offchan) { 2761 ret = -EBUSY; 2762 goto out_unlock; 2763 } 2764 2765 skb = dev_alloc_skb(local->hw.extra_tx_headroom + len); 2766 if (!skb) { 2767 ret = -ENOMEM; 2768 goto out_unlock; 2769 } 2770 skb_reserve(skb, local->hw.extra_tx_headroom); 2771 2772 memcpy(skb_put(skb, len), buf, len); 2773 2774 IEEE80211_SKB_CB(skb)->flags = flags; 2775 2776 skb->dev = sdata->dev; 2777 2778 if (!need_offchan) { 2779 *cookie = (unsigned long) skb; 2780 ieee80211_tx_skb(sdata, skb); 2781 ret = 0; 2782 goto out_unlock; 2783 } 2784 2785 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_TX_OFFCHAN | 2786 IEEE80211_TX_INTFL_OFFCHAN_TX_OK; 2787 if (local->hw.flags & IEEE80211_HW_QUEUE_CONTROL) 2788 IEEE80211_SKB_CB(skb)->hw_queue = 2789 local->hw.offchannel_tx_hw_queue; 2790 2791 /* This will handle all kinds of coalescing and immediate TX */ 2792 ret = ieee80211_start_roc_work(local, sdata, chan, 2793 wait, cookie, skb); 2794 if (ret) 2795 kfree_skb(skb); 2796 out_unlock: 2797 mutex_unlock(&local->mtx); 2798 return ret; 2799 } 2800 2801 static int ieee80211_mgmt_tx_cancel_wait(struct wiphy *wiphy, 2802 struct wireless_dev *wdev, 2803 u64 cookie) 2804 { 2805 struct ieee80211_local *local = wiphy_priv(wiphy); 2806 2807 return ieee80211_cancel_roc(local, cookie, true); 2808 } 2809 2810 static void ieee80211_mgmt_frame_register(struct wiphy *wiphy, 2811 struct wireless_dev *wdev, 2812 u16 frame_type, bool reg) 2813 { 2814 struct ieee80211_local *local = wiphy_priv(wiphy); 2815 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 2816 2817 switch (frame_type) { 2818 case IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_AUTH: 2819 if (sdata->vif.type == NL80211_IFTYPE_ADHOC) { 2820 struct ieee80211_if_ibss *ifibss = &sdata->u.ibss; 2821 2822 if (reg) 2823 ifibss->auth_frame_registrations++; 2824 else 2825 ifibss->auth_frame_registrations--; 2826 } 2827 break; 2828 case IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_PROBE_REQ: 2829 if (reg) 2830 local->probe_req_reg++; 2831 else 2832 local->probe_req_reg--; 2833 2834 if (!local->open_count) 2835 break; 2836 2837 ieee80211_queue_work(&local->hw, &local->reconfig_filter); 2838 break; 2839 default: 2840 break; 2841 } 2842 } 2843 2844 static int ieee80211_set_antenna(struct wiphy *wiphy, u32 tx_ant, u32 rx_ant) 2845 { 2846 struct ieee80211_local *local = wiphy_priv(wiphy); 2847 2848 if (local->started) 2849 return -EOPNOTSUPP; 2850 2851 return drv_set_antenna(local, tx_ant, rx_ant); 2852 } 2853 2854 static int ieee80211_get_antenna(struct wiphy *wiphy, u32 *tx_ant, u32 *rx_ant) 2855 { 2856 struct ieee80211_local *local = wiphy_priv(wiphy); 2857 2858 return drv_get_antenna(local, tx_ant, rx_ant); 2859 } 2860 2861 static int ieee80211_set_ringparam(struct wiphy *wiphy, u32 tx, u32 rx) 2862 { 2863 struct ieee80211_local *local = wiphy_priv(wiphy); 2864 2865 return drv_set_ringparam(local, tx, rx); 2866 } 2867 2868 static void ieee80211_get_ringparam(struct wiphy *wiphy, 2869 u32 *tx, u32 *tx_max, u32 *rx, u32 *rx_max) 2870 { 2871 struct ieee80211_local *local = wiphy_priv(wiphy); 2872 2873 drv_get_ringparam(local, tx, tx_max, rx, rx_max); 2874 } 2875 2876 static int ieee80211_set_rekey_data(struct wiphy *wiphy, 2877 struct net_device *dev, 2878 struct cfg80211_gtk_rekey_data *data) 2879 { 2880 struct ieee80211_local *local = wiphy_priv(wiphy); 2881 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2882 2883 if (!local->ops->set_rekey_data) 2884 return -EOPNOTSUPP; 2885 2886 drv_set_rekey_data(local, sdata, data); 2887 2888 return 0; 2889 } 2890 2891 static void ieee80211_tdls_add_ext_capab(struct sk_buff *skb) 2892 { 2893 u8 *pos = (void *)skb_put(skb, 7); 2894 2895 *pos++ = WLAN_EID_EXT_CAPABILITY; 2896 *pos++ = 5; /* len */ 2897 *pos++ = 0x0; 2898 *pos++ = 0x0; 2899 *pos++ = 0x0; 2900 *pos++ = 0x0; 2901 *pos++ = WLAN_EXT_CAPA5_TDLS_ENABLED; 2902 } 2903 2904 static u16 ieee80211_get_tdls_sta_capab(struct ieee80211_sub_if_data *sdata) 2905 { 2906 struct ieee80211_local *local = sdata->local; 2907 u16 capab; 2908 2909 capab = 0; 2910 if (ieee80211_get_sdata_band(sdata) != IEEE80211_BAND_2GHZ) 2911 return capab; 2912 2913 if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_SLOT_INCAPABLE)) 2914 capab |= WLAN_CAPABILITY_SHORT_SLOT_TIME; 2915 if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_PREAMBLE_INCAPABLE)) 2916 capab |= WLAN_CAPABILITY_SHORT_PREAMBLE; 2917 2918 return capab; 2919 } 2920 2921 static void ieee80211_tdls_add_link_ie(struct sk_buff *skb, u8 *src_addr, 2922 u8 *peer, u8 *bssid) 2923 { 2924 struct ieee80211_tdls_lnkie *lnkid; 2925 2926 lnkid = (void *)skb_put(skb, sizeof(struct ieee80211_tdls_lnkie)); 2927 2928 lnkid->ie_type = WLAN_EID_LINK_ID; 2929 lnkid->ie_len = sizeof(struct ieee80211_tdls_lnkie) - 2; 2930 2931 memcpy(lnkid->bssid, bssid, ETH_ALEN); 2932 memcpy(lnkid->init_sta, src_addr, ETH_ALEN); 2933 memcpy(lnkid->resp_sta, peer, ETH_ALEN); 2934 } 2935 2936 static int 2937 ieee80211_prep_tdls_encap_data(struct wiphy *wiphy, struct net_device *dev, 2938 u8 *peer, u8 action_code, u8 dialog_token, 2939 u16 status_code, struct sk_buff *skb) 2940 { 2941 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2942 enum ieee80211_band band = ieee80211_get_sdata_band(sdata); 2943 struct ieee80211_tdls_data *tf; 2944 2945 tf = (void *)skb_put(skb, offsetof(struct ieee80211_tdls_data, u)); 2946 2947 memcpy(tf->da, peer, ETH_ALEN); 2948 memcpy(tf->sa, sdata->vif.addr, ETH_ALEN); 2949 tf->ether_type = cpu_to_be16(ETH_P_TDLS); 2950 tf->payload_type = WLAN_TDLS_SNAP_RFTYPE; 2951 2952 switch (action_code) { 2953 case WLAN_TDLS_SETUP_REQUEST: 2954 tf->category = WLAN_CATEGORY_TDLS; 2955 tf->action_code = WLAN_TDLS_SETUP_REQUEST; 2956 2957 skb_put(skb, sizeof(tf->u.setup_req)); 2958 tf->u.setup_req.dialog_token = dialog_token; 2959 tf->u.setup_req.capability = 2960 cpu_to_le16(ieee80211_get_tdls_sta_capab(sdata)); 2961 2962 ieee80211_add_srates_ie(sdata, skb, false, band); 2963 ieee80211_add_ext_srates_ie(sdata, skb, false, band); 2964 ieee80211_tdls_add_ext_capab(skb); 2965 break; 2966 case WLAN_TDLS_SETUP_RESPONSE: 2967 tf->category = WLAN_CATEGORY_TDLS; 2968 tf->action_code = WLAN_TDLS_SETUP_RESPONSE; 2969 2970 skb_put(skb, sizeof(tf->u.setup_resp)); 2971 tf->u.setup_resp.status_code = cpu_to_le16(status_code); 2972 tf->u.setup_resp.dialog_token = dialog_token; 2973 tf->u.setup_resp.capability = 2974 cpu_to_le16(ieee80211_get_tdls_sta_capab(sdata)); 2975 2976 ieee80211_add_srates_ie(sdata, skb, false, band); 2977 ieee80211_add_ext_srates_ie(sdata, skb, false, band); 2978 ieee80211_tdls_add_ext_capab(skb); 2979 break; 2980 case WLAN_TDLS_SETUP_CONFIRM: 2981 tf->category = WLAN_CATEGORY_TDLS; 2982 tf->action_code = WLAN_TDLS_SETUP_CONFIRM; 2983 2984 skb_put(skb, sizeof(tf->u.setup_cfm)); 2985 tf->u.setup_cfm.status_code = cpu_to_le16(status_code); 2986 tf->u.setup_cfm.dialog_token = dialog_token; 2987 break; 2988 case WLAN_TDLS_TEARDOWN: 2989 tf->category = WLAN_CATEGORY_TDLS; 2990 tf->action_code = WLAN_TDLS_TEARDOWN; 2991 2992 skb_put(skb, sizeof(tf->u.teardown)); 2993 tf->u.teardown.reason_code = cpu_to_le16(status_code); 2994 break; 2995 case WLAN_TDLS_DISCOVERY_REQUEST: 2996 tf->category = WLAN_CATEGORY_TDLS; 2997 tf->action_code = WLAN_TDLS_DISCOVERY_REQUEST; 2998 2999 skb_put(skb, sizeof(tf->u.discover_req)); 3000 tf->u.discover_req.dialog_token = dialog_token; 3001 break; 3002 default: 3003 return -EINVAL; 3004 } 3005 3006 return 0; 3007 } 3008 3009 static int 3010 ieee80211_prep_tdls_direct(struct wiphy *wiphy, struct net_device *dev, 3011 u8 *peer, u8 action_code, u8 dialog_token, 3012 u16 status_code, struct sk_buff *skb) 3013 { 3014 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 3015 enum ieee80211_band band = ieee80211_get_sdata_band(sdata); 3016 struct ieee80211_mgmt *mgmt; 3017 3018 mgmt = (void *)skb_put(skb, 24); 3019 memset(mgmt, 0, 24); 3020 memcpy(mgmt->da, peer, ETH_ALEN); 3021 memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN); 3022 memcpy(mgmt->bssid, sdata->u.mgd.bssid, ETH_ALEN); 3023 3024 mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | 3025 IEEE80211_STYPE_ACTION); 3026 3027 switch (action_code) { 3028 case WLAN_PUB_ACTION_TDLS_DISCOVER_RES: 3029 skb_put(skb, 1 + sizeof(mgmt->u.action.u.tdls_discover_resp)); 3030 mgmt->u.action.category = WLAN_CATEGORY_PUBLIC; 3031 mgmt->u.action.u.tdls_discover_resp.action_code = 3032 WLAN_PUB_ACTION_TDLS_DISCOVER_RES; 3033 mgmt->u.action.u.tdls_discover_resp.dialog_token = 3034 dialog_token; 3035 mgmt->u.action.u.tdls_discover_resp.capability = 3036 cpu_to_le16(ieee80211_get_tdls_sta_capab(sdata)); 3037 3038 ieee80211_add_srates_ie(sdata, skb, false, band); 3039 ieee80211_add_ext_srates_ie(sdata, skb, false, band); 3040 ieee80211_tdls_add_ext_capab(skb); 3041 break; 3042 default: 3043 return -EINVAL; 3044 } 3045 3046 return 0; 3047 } 3048 3049 static int ieee80211_tdls_mgmt(struct wiphy *wiphy, struct net_device *dev, 3050 u8 *peer, u8 action_code, u8 dialog_token, 3051 u16 status_code, const u8 *extra_ies, 3052 size_t extra_ies_len) 3053 { 3054 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 3055 struct ieee80211_local *local = sdata->local; 3056 struct sk_buff *skb = NULL; 3057 bool send_direct; 3058 int ret; 3059 3060 if (!(wiphy->flags & WIPHY_FLAG_SUPPORTS_TDLS)) 3061 return -ENOTSUPP; 3062 3063 /* make sure we are in managed mode, and associated */ 3064 if (sdata->vif.type != NL80211_IFTYPE_STATION || 3065 !sdata->u.mgd.associated) 3066 return -EINVAL; 3067 3068 tdls_dbg(sdata, "TDLS mgmt action %d peer %pM\n", 3069 action_code, peer); 3070 3071 skb = dev_alloc_skb(local->hw.extra_tx_headroom + 3072 max(sizeof(struct ieee80211_mgmt), 3073 sizeof(struct ieee80211_tdls_data)) + 3074 50 + /* supported rates */ 3075 7 + /* ext capab */ 3076 extra_ies_len + 3077 sizeof(struct ieee80211_tdls_lnkie)); 3078 if (!skb) 3079 return -ENOMEM; 3080 3081 skb_reserve(skb, local->hw.extra_tx_headroom); 3082 3083 switch (action_code) { 3084 case WLAN_TDLS_SETUP_REQUEST: 3085 case WLAN_TDLS_SETUP_RESPONSE: 3086 case WLAN_TDLS_SETUP_CONFIRM: 3087 case WLAN_TDLS_TEARDOWN: 3088 case WLAN_TDLS_DISCOVERY_REQUEST: 3089 ret = ieee80211_prep_tdls_encap_data(wiphy, dev, peer, 3090 action_code, dialog_token, 3091 status_code, skb); 3092 send_direct = false; 3093 break; 3094 case WLAN_PUB_ACTION_TDLS_DISCOVER_RES: 3095 ret = ieee80211_prep_tdls_direct(wiphy, dev, peer, action_code, 3096 dialog_token, status_code, 3097 skb); 3098 send_direct = true; 3099 break; 3100 default: 3101 ret = -ENOTSUPP; 3102 break; 3103 } 3104 3105 if (ret < 0) 3106 goto fail; 3107 3108 if (extra_ies_len) 3109 memcpy(skb_put(skb, extra_ies_len), extra_ies, extra_ies_len); 3110 3111 /* the TDLS link IE is always added last */ 3112 switch (action_code) { 3113 case WLAN_TDLS_SETUP_REQUEST: 3114 case WLAN_TDLS_SETUP_CONFIRM: 3115 case WLAN_TDLS_TEARDOWN: 3116 case WLAN_TDLS_DISCOVERY_REQUEST: 3117 /* we are the initiator */ 3118 ieee80211_tdls_add_link_ie(skb, sdata->vif.addr, peer, 3119 sdata->u.mgd.bssid); 3120 break; 3121 case WLAN_TDLS_SETUP_RESPONSE: 3122 case WLAN_PUB_ACTION_TDLS_DISCOVER_RES: 3123 /* we are the responder */ 3124 ieee80211_tdls_add_link_ie(skb, peer, sdata->vif.addr, 3125 sdata->u.mgd.bssid); 3126 break; 3127 default: 3128 ret = -ENOTSUPP; 3129 goto fail; 3130 } 3131 3132 if (send_direct) { 3133 ieee80211_tx_skb(sdata, skb); 3134 return 0; 3135 } 3136 3137 /* 3138 * According to 802.11z: Setup req/resp are sent in AC_BK, otherwise 3139 * we should default to AC_VI. 3140 */ 3141 switch (action_code) { 3142 case WLAN_TDLS_SETUP_REQUEST: 3143 case WLAN_TDLS_SETUP_RESPONSE: 3144 skb_set_queue_mapping(skb, IEEE80211_AC_BK); 3145 skb->priority = 2; 3146 break; 3147 default: 3148 skb_set_queue_mapping(skb, IEEE80211_AC_VI); 3149 skb->priority = 5; 3150 break; 3151 } 3152 3153 /* disable bottom halves when entering the Tx path */ 3154 local_bh_disable(); 3155 ret = ieee80211_subif_start_xmit(skb, dev); 3156 local_bh_enable(); 3157 3158 return ret; 3159 3160 fail: 3161 dev_kfree_skb(skb); 3162 return ret; 3163 } 3164 3165 static int ieee80211_tdls_oper(struct wiphy *wiphy, struct net_device *dev, 3166 u8 *peer, enum nl80211_tdls_operation oper) 3167 { 3168 struct sta_info *sta; 3169 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 3170 3171 if (!(wiphy->flags & WIPHY_FLAG_SUPPORTS_TDLS)) 3172 return -ENOTSUPP; 3173 3174 if (sdata->vif.type != NL80211_IFTYPE_STATION) 3175 return -EINVAL; 3176 3177 tdls_dbg(sdata, "TDLS oper %d peer %pM\n", oper, peer); 3178 3179 switch (oper) { 3180 case NL80211_TDLS_ENABLE_LINK: 3181 rcu_read_lock(); 3182 sta = sta_info_get(sdata, peer); 3183 if (!sta) { 3184 rcu_read_unlock(); 3185 return -ENOLINK; 3186 } 3187 3188 set_sta_flag(sta, WLAN_STA_TDLS_PEER_AUTH); 3189 rcu_read_unlock(); 3190 break; 3191 case NL80211_TDLS_DISABLE_LINK: 3192 return sta_info_destroy_addr(sdata, peer); 3193 case NL80211_TDLS_TEARDOWN: 3194 case NL80211_TDLS_SETUP: 3195 case NL80211_TDLS_DISCOVERY_REQ: 3196 /* We don't support in-driver setup/teardown/discovery */ 3197 return -ENOTSUPP; 3198 default: 3199 return -ENOTSUPP; 3200 } 3201 3202 return 0; 3203 } 3204 3205 static int ieee80211_probe_client(struct wiphy *wiphy, struct net_device *dev, 3206 const u8 *peer, u64 *cookie) 3207 { 3208 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 3209 struct ieee80211_local *local = sdata->local; 3210 struct ieee80211_qos_hdr *nullfunc; 3211 struct sk_buff *skb; 3212 int size = sizeof(*nullfunc); 3213 __le16 fc; 3214 bool qos; 3215 struct ieee80211_tx_info *info; 3216 struct sta_info *sta; 3217 struct ieee80211_chanctx_conf *chanctx_conf; 3218 enum ieee80211_band band; 3219 3220 rcu_read_lock(); 3221 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); 3222 if (WARN_ON(!chanctx_conf)) { 3223 rcu_read_unlock(); 3224 return -EINVAL; 3225 } 3226 band = chanctx_conf->def.chan->band; 3227 sta = sta_info_get(sdata, peer); 3228 if (sta) { 3229 qos = test_sta_flag(sta, WLAN_STA_WME); 3230 } else { 3231 rcu_read_unlock(); 3232 return -ENOLINK; 3233 } 3234 3235 if (qos) { 3236 fc = cpu_to_le16(IEEE80211_FTYPE_DATA | 3237 IEEE80211_STYPE_QOS_NULLFUNC | 3238 IEEE80211_FCTL_FROMDS); 3239 } else { 3240 size -= 2; 3241 fc = cpu_to_le16(IEEE80211_FTYPE_DATA | 3242 IEEE80211_STYPE_NULLFUNC | 3243 IEEE80211_FCTL_FROMDS); 3244 } 3245 3246 skb = dev_alloc_skb(local->hw.extra_tx_headroom + size); 3247 if (!skb) { 3248 rcu_read_unlock(); 3249 return -ENOMEM; 3250 } 3251 3252 skb->dev = dev; 3253 3254 skb_reserve(skb, local->hw.extra_tx_headroom); 3255 3256 nullfunc = (void *) skb_put(skb, size); 3257 nullfunc->frame_control = fc; 3258 nullfunc->duration_id = 0; 3259 memcpy(nullfunc->addr1, sta->sta.addr, ETH_ALEN); 3260 memcpy(nullfunc->addr2, sdata->vif.addr, ETH_ALEN); 3261 memcpy(nullfunc->addr3, sdata->vif.addr, ETH_ALEN); 3262 nullfunc->seq_ctrl = 0; 3263 3264 info = IEEE80211_SKB_CB(skb); 3265 3266 info->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS | 3267 IEEE80211_TX_INTFL_NL80211_FRAME_TX; 3268 3269 skb_set_queue_mapping(skb, IEEE80211_AC_VO); 3270 skb->priority = 7; 3271 if (qos) 3272 nullfunc->qos_ctrl = cpu_to_le16(7); 3273 3274 local_bh_disable(); 3275 ieee80211_xmit(sdata, skb, band); 3276 local_bh_enable(); 3277 rcu_read_unlock(); 3278 3279 *cookie = (unsigned long) skb; 3280 return 0; 3281 } 3282 3283 static int ieee80211_cfg_get_channel(struct wiphy *wiphy, 3284 struct wireless_dev *wdev, 3285 struct cfg80211_chan_def *chandef) 3286 { 3287 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 3288 struct ieee80211_chanctx_conf *chanctx_conf; 3289 int ret = -ENODATA; 3290 3291 rcu_read_lock(); 3292 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); 3293 if (chanctx_conf) { 3294 *chandef = chanctx_conf->def; 3295 ret = 0; 3296 } 3297 rcu_read_unlock(); 3298 3299 return ret; 3300 } 3301 3302 #ifdef CONFIG_PM 3303 static void ieee80211_set_wakeup(struct wiphy *wiphy, bool enabled) 3304 { 3305 drv_set_wakeup(wiphy_priv(wiphy), enabled); 3306 } 3307 #endif 3308 3309 struct cfg80211_ops mac80211_config_ops = { 3310 .add_virtual_intf = ieee80211_add_iface, 3311 .del_virtual_intf = ieee80211_del_iface, 3312 .change_virtual_intf = ieee80211_change_iface, 3313 .start_p2p_device = ieee80211_start_p2p_device, 3314 .stop_p2p_device = ieee80211_stop_p2p_device, 3315 .add_key = ieee80211_add_key, 3316 .del_key = ieee80211_del_key, 3317 .get_key = ieee80211_get_key, 3318 .set_default_key = ieee80211_config_default_key, 3319 .set_default_mgmt_key = ieee80211_config_default_mgmt_key, 3320 .start_ap = ieee80211_start_ap, 3321 .change_beacon = ieee80211_change_beacon, 3322 .stop_ap = ieee80211_stop_ap, 3323 .add_station = ieee80211_add_station, 3324 .del_station = ieee80211_del_station, 3325 .change_station = ieee80211_change_station, 3326 .get_station = ieee80211_get_station, 3327 .dump_station = ieee80211_dump_station, 3328 .dump_survey = ieee80211_dump_survey, 3329 #ifdef CONFIG_MAC80211_MESH 3330 .add_mpath = ieee80211_add_mpath, 3331 .del_mpath = ieee80211_del_mpath, 3332 .change_mpath = ieee80211_change_mpath, 3333 .get_mpath = ieee80211_get_mpath, 3334 .dump_mpath = ieee80211_dump_mpath, 3335 .update_mesh_config = ieee80211_update_mesh_config, 3336 .get_mesh_config = ieee80211_get_mesh_config, 3337 .join_mesh = ieee80211_join_mesh, 3338 .leave_mesh = ieee80211_leave_mesh, 3339 #endif 3340 .change_bss = ieee80211_change_bss, 3341 .set_txq_params = ieee80211_set_txq_params, 3342 .set_monitor_channel = ieee80211_set_monitor_channel, 3343 .suspend = ieee80211_suspend, 3344 .resume = ieee80211_resume, 3345 .scan = ieee80211_scan, 3346 .sched_scan_start = ieee80211_sched_scan_start, 3347 .sched_scan_stop = ieee80211_sched_scan_stop, 3348 .auth = ieee80211_auth, 3349 .assoc = ieee80211_assoc, 3350 .deauth = ieee80211_deauth, 3351 .disassoc = ieee80211_disassoc, 3352 .join_ibss = ieee80211_join_ibss, 3353 .leave_ibss = ieee80211_leave_ibss, 3354 .set_mcast_rate = ieee80211_set_mcast_rate, 3355 .set_wiphy_params = ieee80211_set_wiphy_params, 3356 .set_tx_power = ieee80211_set_tx_power, 3357 .get_tx_power = ieee80211_get_tx_power, 3358 .set_wds_peer = ieee80211_set_wds_peer, 3359 .rfkill_poll = ieee80211_rfkill_poll, 3360 CFG80211_TESTMODE_CMD(ieee80211_testmode_cmd) 3361 CFG80211_TESTMODE_DUMP(ieee80211_testmode_dump) 3362 .set_power_mgmt = ieee80211_set_power_mgmt, 3363 .set_bitrate_mask = ieee80211_set_bitrate_mask, 3364 .remain_on_channel = ieee80211_remain_on_channel, 3365 .cancel_remain_on_channel = ieee80211_cancel_remain_on_channel, 3366 .mgmt_tx = ieee80211_mgmt_tx, 3367 .mgmt_tx_cancel_wait = ieee80211_mgmt_tx_cancel_wait, 3368 .set_cqm_rssi_config = ieee80211_set_cqm_rssi_config, 3369 .mgmt_frame_register = ieee80211_mgmt_frame_register, 3370 .set_antenna = ieee80211_set_antenna, 3371 .get_antenna = ieee80211_get_antenna, 3372 .set_ringparam = ieee80211_set_ringparam, 3373 .get_ringparam = ieee80211_get_ringparam, 3374 .set_rekey_data = ieee80211_set_rekey_data, 3375 .tdls_oper = ieee80211_tdls_oper, 3376 .tdls_mgmt = ieee80211_tdls_mgmt, 3377 .probe_client = ieee80211_probe_client, 3378 .set_noack_map = ieee80211_set_noack_map, 3379 #ifdef CONFIG_PM 3380 .set_wakeup = ieee80211_set_wakeup, 3381 #endif 3382 .get_et_sset_count = ieee80211_get_et_sset_count, 3383 .get_et_stats = ieee80211_get_et_stats, 3384 .get_et_strings = ieee80211_get_et_strings, 3385 .get_channel = ieee80211_cfg_get_channel, 3386 .start_radar_detection = ieee80211_start_radar_detection, 3387 }; 3388