1 // SPDX-License-Identifier: GPL-2.0 2 /* 3 * SME code for cfg80211 4 * both driver SME event handling and the SME implementation 5 * (for nl80211's connect() and wext) 6 * 7 * Copyright 2009 Johannes Berg <johannes@sipsolutions.net> 8 * Copyright (C) 2009, 2020 Intel Corporation. All rights reserved. 9 * Copyright 2017 Intel Deutschland GmbH 10 */ 11 12 #include <linux/etherdevice.h> 13 #include <linux/if_arp.h> 14 #include <linux/slab.h> 15 #include <linux/workqueue.h> 16 #include <linux/wireless.h> 17 #include <linux/export.h> 18 #include <net/iw_handler.h> 19 #include <net/cfg80211.h> 20 #include <net/rtnetlink.h> 21 #include "nl80211.h" 22 #include "reg.h" 23 #include "rdev-ops.h" 24 25 /* 26 * Software SME in cfg80211, using auth/assoc/deauth calls to the 27 * driver. This is for implementing nl80211's connect/disconnect 28 * and wireless extensions (if configured.) 29 */ 30 31 struct cfg80211_conn { 32 struct cfg80211_connect_params params; 33 /* these are sub-states of the _CONNECTING sme_state */ 34 enum { 35 CFG80211_CONN_SCANNING, 36 CFG80211_CONN_SCAN_AGAIN, 37 CFG80211_CONN_AUTHENTICATE_NEXT, 38 CFG80211_CONN_AUTHENTICATING, 39 CFG80211_CONN_AUTH_FAILED_TIMEOUT, 40 CFG80211_CONN_ASSOCIATE_NEXT, 41 CFG80211_CONN_ASSOCIATING, 42 CFG80211_CONN_ASSOC_FAILED, 43 CFG80211_CONN_ASSOC_FAILED_TIMEOUT, 44 CFG80211_CONN_DEAUTH, 45 CFG80211_CONN_ABANDON, 46 CFG80211_CONN_CONNECTED, 47 } state; 48 u8 bssid[ETH_ALEN], prev_bssid[ETH_ALEN]; 49 const u8 *ie; 50 size_t ie_len; 51 bool auto_auth, prev_bssid_valid; 52 }; 53 54 static void cfg80211_sme_free(struct wireless_dev *wdev) 55 { 56 if (!wdev->conn) 57 return; 58 59 kfree(wdev->conn->ie); 60 kfree(wdev->conn); 61 wdev->conn = NULL; 62 } 63 64 static int cfg80211_conn_scan(struct wireless_dev *wdev) 65 { 66 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 67 struct cfg80211_scan_request *request; 68 int n_channels, err; 69 70 ASSERT_WDEV_LOCK(wdev); 71 72 if (rdev->scan_req || rdev->scan_msg) 73 return -EBUSY; 74 75 if (wdev->conn->params.channel) 76 n_channels = 1; 77 else 78 n_channels = ieee80211_get_num_supported_channels(wdev->wiphy); 79 80 request = kzalloc(sizeof(*request) + sizeof(request->ssids[0]) + 81 sizeof(request->channels[0]) * n_channels, 82 GFP_KERNEL); 83 if (!request) 84 return -ENOMEM; 85 86 if (wdev->conn->params.channel) { 87 enum nl80211_band band = wdev->conn->params.channel->band; 88 struct ieee80211_supported_band *sband = 89 wdev->wiphy->bands[band]; 90 91 if (!sband) { 92 kfree(request); 93 return -EINVAL; 94 } 95 request->channels[0] = wdev->conn->params.channel; 96 request->rates[band] = (1 << sband->n_bitrates) - 1; 97 } else { 98 int i = 0, j; 99 enum nl80211_band band; 100 struct ieee80211_supported_band *bands; 101 struct ieee80211_channel *channel; 102 103 for (band = 0; band < NUM_NL80211_BANDS; band++) { 104 bands = wdev->wiphy->bands[band]; 105 if (!bands) 106 continue; 107 for (j = 0; j < bands->n_channels; j++) { 108 channel = &bands->channels[j]; 109 if (channel->flags & IEEE80211_CHAN_DISABLED) 110 continue; 111 request->channels[i++] = channel; 112 } 113 request->rates[band] = (1 << bands->n_bitrates) - 1; 114 } 115 n_channels = i; 116 } 117 request->n_channels = n_channels; 118 request->ssids = (void *)&request->channels[n_channels]; 119 request->n_ssids = 1; 120 121 memcpy(request->ssids[0].ssid, wdev->conn->params.ssid, 122 wdev->conn->params.ssid_len); 123 request->ssids[0].ssid_len = wdev->conn->params.ssid_len; 124 125 eth_broadcast_addr(request->bssid); 126 127 request->wdev = wdev; 128 request->wiphy = &rdev->wiphy; 129 request->scan_start = jiffies; 130 131 rdev->scan_req = request; 132 133 err = rdev_scan(rdev, request); 134 if (!err) { 135 wdev->conn->state = CFG80211_CONN_SCANNING; 136 nl80211_send_scan_start(rdev, wdev); 137 dev_hold(wdev->netdev); 138 } else { 139 rdev->scan_req = NULL; 140 kfree(request); 141 } 142 return err; 143 } 144 145 static int cfg80211_conn_do_work(struct wireless_dev *wdev, 146 enum nl80211_timeout_reason *treason) 147 { 148 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 149 struct cfg80211_connect_params *params; 150 struct cfg80211_assoc_request req = {}; 151 int err; 152 153 ASSERT_WDEV_LOCK(wdev); 154 155 if (!wdev->conn) 156 return 0; 157 158 params = &wdev->conn->params; 159 160 switch (wdev->conn->state) { 161 case CFG80211_CONN_SCANNING: 162 /* didn't find it during scan ... */ 163 return -ENOENT; 164 case CFG80211_CONN_SCAN_AGAIN: 165 return cfg80211_conn_scan(wdev); 166 case CFG80211_CONN_AUTHENTICATE_NEXT: 167 if (WARN_ON(!rdev->ops->auth)) 168 return -EOPNOTSUPP; 169 wdev->conn->state = CFG80211_CONN_AUTHENTICATING; 170 return cfg80211_mlme_auth(rdev, wdev->netdev, 171 params->channel, params->auth_type, 172 params->bssid, 173 params->ssid, params->ssid_len, 174 NULL, 0, 175 params->key, params->key_len, 176 params->key_idx, NULL, 0); 177 case CFG80211_CONN_AUTH_FAILED_TIMEOUT: 178 *treason = NL80211_TIMEOUT_AUTH; 179 return -ENOTCONN; 180 case CFG80211_CONN_ASSOCIATE_NEXT: 181 if (WARN_ON(!rdev->ops->assoc)) 182 return -EOPNOTSUPP; 183 wdev->conn->state = CFG80211_CONN_ASSOCIATING; 184 if (wdev->conn->prev_bssid_valid) 185 req.prev_bssid = wdev->conn->prev_bssid; 186 req.ie = params->ie; 187 req.ie_len = params->ie_len; 188 req.use_mfp = params->mfp != NL80211_MFP_NO; 189 req.crypto = params->crypto; 190 req.flags = params->flags; 191 req.ht_capa = params->ht_capa; 192 req.ht_capa_mask = params->ht_capa_mask; 193 req.vht_capa = params->vht_capa; 194 req.vht_capa_mask = params->vht_capa_mask; 195 196 err = cfg80211_mlme_assoc(rdev, wdev->netdev, params->channel, 197 params->bssid, params->ssid, 198 params->ssid_len, &req); 199 if (err) 200 cfg80211_mlme_deauth(rdev, wdev->netdev, params->bssid, 201 NULL, 0, 202 WLAN_REASON_DEAUTH_LEAVING, 203 false); 204 return err; 205 case CFG80211_CONN_ASSOC_FAILED_TIMEOUT: 206 *treason = NL80211_TIMEOUT_ASSOC; 207 fallthrough; 208 case CFG80211_CONN_ASSOC_FAILED: 209 cfg80211_mlme_deauth(rdev, wdev->netdev, params->bssid, 210 NULL, 0, 211 WLAN_REASON_DEAUTH_LEAVING, false); 212 return -ENOTCONN; 213 case CFG80211_CONN_DEAUTH: 214 cfg80211_mlme_deauth(rdev, wdev->netdev, params->bssid, 215 NULL, 0, 216 WLAN_REASON_DEAUTH_LEAVING, false); 217 fallthrough; 218 case CFG80211_CONN_ABANDON: 219 /* free directly, disconnected event already sent */ 220 cfg80211_sme_free(wdev); 221 return 0; 222 default: 223 return 0; 224 } 225 } 226 227 void cfg80211_conn_work(struct work_struct *work) 228 { 229 struct cfg80211_registered_device *rdev = 230 container_of(work, struct cfg80211_registered_device, conn_work); 231 struct wireless_dev *wdev; 232 u8 bssid_buf[ETH_ALEN], *bssid = NULL; 233 enum nl80211_timeout_reason treason; 234 235 wiphy_lock(&rdev->wiphy); 236 237 list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) { 238 if (!wdev->netdev) 239 continue; 240 241 wdev_lock(wdev); 242 if (!netif_running(wdev->netdev)) { 243 wdev_unlock(wdev); 244 continue; 245 } 246 if (!wdev->conn || 247 wdev->conn->state == CFG80211_CONN_CONNECTED) { 248 wdev_unlock(wdev); 249 continue; 250 } 251 if (wdev->conn->params.bssid) { 252 memcpy(bssid_buf, wdev->conn->params.bssid, ETH_ALEN); 253 bssid = bssid_buf; 254 } 255 treason = NL80211_TIMEOUT_UNSPECIFIED; 256 if (cfg80211_conn_do_work(wdev, &treason)) { 257 struct cfg80211_connect_resp_params cr; 258 259 memset(&cr, 0, sizeof(cr)); 260 cr.status = -1; 261 cr.bssid = bssid; 262 cr.timeout_reason = treason; 263 __cfg80211_connect_result(wdev->netdev, &cr, false); 264 } 265 wdev_unlock(wdev); 266 } 267 268 wiphy_unlock(&rdev->wiphy); 269 } 270 271 /* Returned bss is reference counted and must be cleaned up appropriately. */ 272 static struct cfg80211_bss *cfg80211_get_conn_bss(struct wireless_dev *wdev) 273 { 274 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 275 struct cfg80211_bss *bss; 276 277 ASSERT_WDEV_LOCK(wdev); 278 279 bss = cfg80211_get_bss(wdev->wiphy, wdev->conn->params.channel, 280 wdev->conn->params.bssid, 281 wdev->conn->params.ssid, 282 wdev->conn->params.ssid_len, 283 wdev->conn_bss_type, 284 IEEE80211_PRIVACY(wdev->conn->params.privacy)); 285 if (!bss) 286 return NULL; 287 288 memcpy(wdev->conn->bssid, bss->bssid, ETH_ALEN); 289 wdev->conn->params.bssid = wdev->conn->bssid; 290 wdev->conn->params.channel = bss->channel; 291 wdev->conn->state = CFG80211_CONN_AUTHENTICATE_NEXT; 292 schedule_work(&rdev->conn_work); 293 294 return bss; 295 } 296 297 static void __cfg80211_sme_scan_done(struct net_device *dev) 298 { 299 struct wireless_dev *wdev = dev->ieee80211_ptr; 300 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 301 struct cfg80211_bss *bss; 302 303 ASSERT_WDEV_LOCK(wdev); 304 305 if (!wdev->conn) 306 return; 307 308 if (wdev->conn->state != CFG80211_CONN_SCANNING && 309 wdev->conn->state != CFG80211_CONN_SCAN_AGAIN) 310 return; 311 312 bss = cfg80211_get_conn_bss(wdev); 313 if (bss) 314 cfg80211_put_bss(&rdev->wiphy, bss); 315 else 316 schedule_work(&rdev->conn_work); 317 } 318 319 void cfg80211_sme_scan_done(struct net_device *dev) 320 { 321 struct wireless_dev *wdev = dev->ieee80211_ptr; 322 323 wdev_lock(wdev); 324 __cfg80211_sme_scan_done(dev); 325 wdev_unlock(wdev); 326 } 327 328 void cfg80211_sme_rx_auth(struct wireless_dev *wdev, const u8 *buf, size_t len) 329 { 330 struct wiphy *wiphy = wdev->wiphy; 331 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 332 struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)buf; 333 u16 status_code = le16_to_cpu(mgmt->u.auth.status_code); 334 335 ASSERT_WDEV_LOCK(wdev); 336 337 if (!wdev->conn || wdev->conn->state == CFG80211_CONN_CONNECTED) 338 return; 339 340 if (status_code == WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG && 341 wdev->conn->auto_auth && 342 wdev->conn->params.auth_type != NL80211_AUTHTYPE_NETWORK_EAP) { 343 /* select automatically between only open, shared, leap */ 344 switch (wdev->conn->params.auth_type) { 345 case NL80211_AUTHTYPE_OPEN_SYSTEM: 346 if (wdev->connect_keys) 347 wdev->conn->params.auth_type = 348 NL80211_AUTHTYPE_SHARED_KEY; 349 else 350 wdev->conn->params.auth_type = 351 NL80211_AUTHTYPE_NETWORK_EAP; 352 break; 353 case NL80211_AUTHTYPE_SHARED_KEY: 354 wdev->conn->params.auth_type = 355 NL80211_AUTHTYPE_NETWORK_EAP; 356 break; 357 default: 358 /* huh? */ 359 wdev->conn->params.auth_type = 360 NL80211_AUTHTYPE_OPEN_SYSTEM; 361 break; 362 } 363 wdev->conn->state = CFG80211_CONN_AUTHENTICATE_NEXT; 364 schedule_work(&rdev->conn_work); 365 } else if (status_code != WLAN_STATUS_SUCCESS) { 366 struct cfg80211_connect_resp_params cr; 367 368 memset(&cr, 0, sizeof(cr)); 369 cr.status = status_code; 370 cr.bssid = mgmt->bssid; 371 cr.timeout_reason = NL80211_TIMEOUT_UNSPECIFIED; 372 __cfg80211_connect_result(wdev->netdev, &cr, false); 373 } else if (wdev->conn->state == CFG80211_CONN_AUTHENTICATING) { 374 wdev->conn->state = CFG80211_CONN_ASSOCIATE_NEXT; 375 schedule_work(&rdev->conn_work); 376 } 377 } 378 379 bool cfg80211_sme_rx_assoc_resp(struct wireless_dev *wdev, u16 status) 380 { 381 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 382 383 if (!wdev->conn) 384 return false; 385 386 if (status == WLAN_STATUS_SUCCESS) { 387 wdev->conn->state = CFG80211_CONN_CONNECTED; 388 return false; 389 } 390 391 if (wdev->conn->prev_bssid_valid) { 392 /* 393 * Some stupid APs don't accept reassoc, so we 394 * need to fall back to trying regular assoc; 395 * return true so no event is sent to userspace. 396 */ 397 wdev->conn->prev_bssid_valid = false; 398 wdev->conn->state = CFG80211_CONN_ASSOCIATE_NEXT; 399 schedule_work(&rdev->conn_work); 400 return true; 401 } 402 403 wdev->conn->state = CFG80211_CONN_ASSOC_FAILED; 404 schedule_work(&rdev->conn_work); 405 return false; 406 } 407 408 void cfg80211_sme_deauth(struct wireless_dev *wdev) 409 { 410 cfg80211_sme_free(wdev); 411 } 412 413 void cfg80211_sme_auth_timeout(struct wireless_dev *wdev) 414 { 415 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 416 417 if (!wdev->conn) 418 return; 419 420 wdev->conn->state = CFG80211_CONN_AUTH_FAILED_TIMEOUT; 421 schedule_work(&rdev->conn_work); 422 } 423 424 void cfg80211_sme_disassoc(struct wireless_dev *wdev) 425 { 426 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 427 428 if (!wdev->conn) 429 return; 430 431 wdev->conn->state = CFG80211_CONN_DEAUTH; 432 schedule_work(&rdev->conn_work); 433 } 434 435 void cfg80211_sme_assoc_timeout(struct wireless_dev *wdev) 436 { 437 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 438 439 if (!wdev->conn) 440 return; 441 442 wdev->conn->state = CFG80211_CONN_ASSOC_FAILED_TIMEOUT; 443 schedule_work(&rdev->conn_work); 444 } 445 446 void cfg80211_sme_abandon_assoc(struct wireless_dev *wdev) 447 { 448 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 449 450 if (!wdev->conn) 451 return; 452 453 wdev->conn->state = CFG80211_CONN_ABANDON; 454 schedule_work(&rdev->conn_work); 455 } 456 457 static int cfg80211_sme_get_conn_ies(struct wireless_dev *wdev, 458 const u8 *ies, size_t ies_len, 459 const u8 **out_ies, size_t *out_ies_len) 460 { 461 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 462 u8 *buf; 463 size_t offs; 464 465 if (!rdev->wiphy.extended_capabilities_len || 466 (ies && cfg80211_find_ie(WLAN_EID_EXT_CAPABILITY, ies, ies_len))) { 467 *out_ies = kmemdup(ies, ies_len, GFP_KERNEL); 468 if (!*out_ies) 469 return -ENOMEM; 470 *out_ies_len = ies_len; 471 return 0; 472 } 473 474 buf = kmalloc(ies_len + rdev->wiphy.extended_capabilities_len + 2, 475 GFP_KERNEL); 476 if (!buf) 477 return -ENOMEM; 478 479 if (ies_len) { 480 static const u8 before_extcapa[] = { 481 /* not listing IEs expected to be created by driver */ 482 WLAN_EID_RSN, 483 WLAN_EID_QOS_CAPA, 484 WLAN_EID_RRM_ENABLED_CAPABILITIES, 485 WLAN_EID_MOBILITY_DOMAIN, 486 WLAN_EID_SUPPORTED_REGULATORY_CLASSES, 487 WLAN_EID_BSS_COEX_2040, 488 }; 489 490 offs = ieee80211_ie_split(ies, ies_len, before_extcapa, 491 ARRAY_SIZE(before_extcapa), 0); 492 memcpy(buf, ies, offs); 493 /* leave a whole for extended capabilities IE */ 494 memcpy(buf + offs + rdev->wiphy.extended_capabilities_len + 2, 495 ies + offs, ies_len - offs); 496 } else { 497 offs = 0; 498 } 499 500 /* place extended capabilities IE (with only driver capabilities) */ 501 buf[offs] = WLAN_EID_EXT_CAPABILITY; 502 buf[offs + 1] = rdev->wiphy.extended_capabilities_len; 503 memcpy(buf + offs + 2, 504 rdev->wiphy.extended_capabilities, 505 rdev->wiphy.extended_capabilities_len); 506 507 *out_ies = buf; 508 *out_ies_len = ies_len + rdev->wiphy.extended_capabilities_len + 2; 509 510 return 0; 511 } 512 513 static int cfg80211_sme_connect(struct wireless_dev *wdev, 514 struct cfg80211_connect_params *connect, 515 const u8 *prev_bssid) 516 { 517 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 518 struct cfg80211_bss *bss; 519 int err; 520 521 if (!rdev->ops->auth || !rdev->ops->assoc) 522 return -EOPNOTSUPP; 523 524 if (wdev->current_bss) { 525 cfg80211_unhold_bss(wdev->current_bss); 526 cfg80211_put_bss(wdev->wiphy, &wdev->current_bss->pub); 527 wdev->current_bss = NULL; 528 529 cfg80211_sme_free(wdev); 530 } 531 532 if (wdev->conn) 533 return -EINPROGRESS; 534 535 wdev->conn = kzalloc(sizeof(*wdev->conn), GFP_KERNEL); 536 if (!wdev->conn) 537 return -ENOMEM; 538 539 /* 540 * Copy all parameters, and treat explicitly IEs, BSSID, SSID. 541 */ 542 memcpy(&wdev->conn->params, connect, sizeof(*connect)); 543 if (connect->bssid) { 544 wdev->conn->params.bssid = wdev->conn->bssid; 545 memcpy(wdev->conn->bssid, connect->bssid, ETH_ALEN); 546 } 547 548 if (cfg80211_sme_get_conn_ies(wdev, connect->ie, connect->ie_len, 549 &wdev->conn->ie, 550 &wdev->conn->params.ie_len)) { 551 kfree(wdev->conn); 552 wdev->conn = NULL; 553 return -ENOMEM; 554 } 555 wdev->conn->params.ie = wdev->conn->ie; 556 557 if (connect->auth_type == NL80211_AUTHTYPE_AUTOMATIC) { 558 wdev->conn->auto_auth = true; 559 /* start with open system ... should mostly work */ 560 wdev->conn->params.auth_type = 561 NL80211_AUTHTYPE_OPEN_SYSTEM; 562 } else { 563 wdev->conn->auto_auth = false; 564 } 565 566 wdev->conn->params.ssid = wdev->ssid; 567 wdev->conn->params.ssid_len = wdev->ssid_len; 568 569 /* see if we have the bss already */ 570 bss = cfg80211_get_conn_bss(wdev); 571 572 if (prev_bssid) { 573 memcpy(wdev->conn->prev_bssid, prev_bssid, ETH_ALEN); 574 wdev->conn->prev_bssid_valid = true; 575 } 576 577 /* we're good if we have a matching bss struct */ 578 if (bss) { 579 enum nl80211_timeout_reason treason; 580 581 err = cfg80211_conn_do_work(wdev, &treason); 582 cfg80211_put_bss(wdev->wiphy, bss); 583 } else { 584 /* otherwise we'll need to scan for the AP first */ 585 err = cfg80211_conn_scan(wdev); 586 587 /* 588 * If we can't scan right now, then we need to scan again 589 * after the current scan finished, since the parameters 590 * changed (unless we find a good AP anyway). 591 */ 592 if (err == -EBUSY) { 593 err = 0; 594 wdev->conn->state = CFG80211_CONN_SCAN_AGAIN; 595 } 596 } 597 598 if (err) 599 cfg80211_sme_free(wdev); 600 601 return err; 602 } 603 604 static int cfg80211_sme_disconnect(struct wireless_dev *wdev, u16 reason) 605 { 606 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 607 int err; 608 609 if (!wdev->conn) 610 return 0; 611 612 if (!rdev->ops->deauth) 613 return -EOPNOTSUPP; 614 615 if (wdev->conn->state == CFG80211_CONN_SCANNING || 616 wdev->conn->state == CFG80211_CONN_SCAN_AGAIN) { 617 err = 0; 618 goto out; 619 } 620 621 /* wdev->conn->params.bssid must be set if > SCANNING */ 622 err = cfg80211_mlme_deauth(rdev, wdev->netdev, 623 wdev->conn->params.bssid, 624 NULL, 0, reason, false); 625 out: 626 cfg80211_sme_free(wdev); 627 return err; 628 } 629 630 /* 631 * code shared for in-device and software SME 632 */ 633 634 static bool cfg80211_is_all_idle(void) 635 { 636 struct cfg80211_registered_device *rdev; 637 struct wireless_dev *wdev; 638 bool is_all_idle = true; 639 640 /* 641 * All devices must be idle as otherwise if you are actively 642 * scanning some new beacon hints could be learned and would 643 * count as new regulatory hints. 644 * Also if there is any other active beaconing interface we 645 * need not issue a disconnect hint and reset any info such 646 * as chan dfs state, etc. 647 */ 648 list_for_each_entry(rdev, &cfg80211_rdev_list, list) { 649 list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) { 650 wdev_lock(wdev); 651 if (wdev->conn || wdev->current_bss || 652 cfg80211_beaconing_iface_active(wdev)) 653 is_all_idle = false; 654 wdev_unlock(wdev); 655 } 656 } 657 658 return is_all_idle; 659 } 660 661 static void disconnect_work(struct work_struct *work) 662 { 663 rtnl_lock(); 664 if (cfg80211_is_all_idle()) 665 regulatory_hint_disconnect(); 666 rtnl_unlock(); 667 } 668 669 DECLARE_WORK(cfg80211_disconnect_work, disconnect_work); 670 671 672 /* 673 * API calls for drivers implementing connect/disconnect and 674 * SME event handling 675 */ 676 677 /* This method must consume bss one way or another */ 678 void __cfg80211_connect_result(struct net_device *dev, 679 struct cfg80211_connect_resp_params *cr, 680 bool wextev) 681 { 682 struct wireless_dev *wdev = dev->ieee80211_ptr; 683 const u8 *country_ie; 684 #ifdef CONFIG_CFG80211_WEXT 685 union iwreq_data wrqu; 686 #endif 687 688 ASSERT_WDEV_LOCK(wdev); 689 690 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION && 691 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)) { 692 cfg80211_put_bss(wdev->wiphy, cr->bss); 693 return; 694 } 695 696 wdev->unprot_beacon_reported = 0; 697 nl80211_send_connect_result(wiphy_to_rdev(wdev->wiphy), dev, cr, 698 GFP_KERNEL); 699 700 #ifdef CONFIG_CFG80211_WEXT 701 if (wextev) { 702 if (cr->req_ie && cr->status == WLAN_STATUS_SUCCESS) { 703 memset(&wrqu, 0, sizeof(wrqu)); 704 wrqu.data.length = cr->req_ie_len; 705 wireless_send_event(dev, IWEVASSOCREQIE, &wrqu, 706 cr->req_ie); 707 } 708 709 if (cr->resp_ie && cr->status == WLAN_STATUS_SUCCESS) { 710 memset(&wrqu, 0, sizeof(wrqu)); 711 wrqu.data.length = cr->resp_ie_len; 712 wireless_send_event(dev, IWEVASSOCRESPIE, &wrqu, 713 cr->resp_ie); 714 } 715 716 memset(&wrqu, 0, sizeof(wrqu)); 717 wrqu.ap_addr.sa_family = ARPHRD_ETHER; 718 if (cr->bssid && cr->status == WLAN_STATUS_SUCCESS) { 719 memcpy(wrqu.ap_addr.sa_data, cr->bssid, ETH_ALEN); 720 memcpy(wdev->wext.prev_bssid, cr->bssid, ETH_ALEN); 721 wdev->wext.prev_bssid_valid = true; 722 } 723 wireless_send_event(dev, SIOCGIWAP, &wrqu, NULL); 724 } 725 #endif 726 727 if (!cr->bss && (cr->status == WLAN_STATUS_SUCCESS)) { 728 WARN_ON_ONCE(!wiphy_to_rdev(wdev->wiphy)->ops->connect); 729 cr->bss = cfg80211_get_bss(wdev->wiphy, NULL, cr->bssid, 730 wdev->ssid, wdev->ssid_len, 731 wdev->conn_bss_type, 732 IEEE80211_PRIVACY_ANY); 733 if (cr->bss) 734 cfg80211_hold_bss(bss_from_pub(cr->bss)); 735 } 736 737 if (wdev->current_bss) { 738 cfg80211_unhold_bss(wdev->current_bss); 739 cfg80211_put_bss(wdev->wiphy, &wdev->current_bss->pub); 740 wdev->current_bss = NULL; 741 } 742 743 if (cr->status != WLAN_STATUS_SUCCESS) { 744 kfree_sensitive(wdev->connect_keys); 745 wdev->connect_keys = NULL; 746 wdev->ssid_len = 0; 747 wdev->conn_owner_nlportid = 0; 748 if (cr->bss) { 749 cfg80211_unhold_bss(bss_from_pub(cr->bss)); 750 cfg80211_put_bss(wdev->wiphy, cr->bss); 751 } 752 cfg80211_sme_free(wdev); 753 return; 754 } 755 756 if (WARN_ON(!cr->bss)) 757 return; 758 759 wdev->current_bss = bss_from_pub(cr->bss); 760 761 if (!(wdev->wiphy->flags & WIPHY_FLAG_HAS_STATIC_WEP)) 762 cfg80211_upload_connect_keys(wdev); 763 764 rcu_read_lock(); 765 country_ie = ieee80211_bss_get_ie(cr->bss, WLAN_EID_COUNTRY); 766 if (!country_ie) { 767 rcu_read_unlock(); 768 return; 769 } 770 771 country_ie = kmemdup(country_ie, 2 + country_ie[1], GFP_ATOMIC); 772 rcu_read_unlock(); 773 774 if (!country_ie) 775 return; 776 777 /* 778 * ieee80211_bss_get_ie() ensures we can access: 779 * - country_ie + 2, the start of the country ie data, and 780 * - and country_ie[1] which is the IE length 781 */ 782 regulatory_hint_country_ie(wdev->wiphy, cr->bss->channel->band, 783 country_ie + 2, country_ie[1]); 784 kfree(country_ie); 785 } 786 787 /* Consumes bss object one way or another */ 788 void cfg80211_connect_done(struct net_device *dev, 789 struct cfg80211_connect_resp_params *params, 790 gfp_t gfp) 791 { 792 struct wireless_dev *wdev = dev->ieee80211_ptr; 793 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 794 struct cfg80211_event *ev; 795 unsigned long flags; 796 u8 *next; 797 798 if (params->bss) { 799 struct cfg80211_internal_bss *ibss = bss_from_pub(params->bss); 800 801 if (list_empty(&ibss->list)) { 802 struct cfg80211_bss *found = NULL, *tmp = params->bss; 803 804 found = cfg80211_get_bss(wdev->wiphy, NULL, 805 params->bss->bssid, 806 wdev->ssid, wdev->ssid_len, 807 wdev->conn_bss_type, 808 IEEE80211_PRIVACY_ANY); 809 if (found) { 810 /* The same BSS is already updated so use it 811 * instead, as it has latest info. 812 */ 813 params->bss = found; 814 } else { 815 /* Update with BSS provided by driver, it will 816 * be freshly added and ref cnted, we can free 817 * the old one. 818 * 819 * signal_valid can be false, as we are not 820 * expecting the BSS to be found. 821 * 822 * keep the old timestamp to avoid confusion 823 */ 824 cfg80211_bss_update(rdev, ibss, false, 825 ibss->ts); 826 } 827 828 cfg80211_put_bss(wdev->wiphy, tmp); 829 } 830 } 831 832 ev = kzalloc(sizeof(*ev) + (params->bssid ? ETH_ALEN : 0) + 833 params->req_ie_len + params->resp_ie_len + 834 params->fils.kek_len + params->fils.pmk_len + 835 (params->fils.pmkid ? WLAN_PMKID_LEN : 0), gfp); 836 if (!ev) { 837 cfg80211_put_bss(wdev->wiphy, params->bss); 838 return; 839 } 840 841 ev->type = EVENT_CONNECT_RESULT; 842 next = ((u8 *)ev) + sizeof(*ev); 843 if (params->bssid) { 844 ev->cr.bssid = next; 845 memcpy((void *)ev->cr.bssid, params->bssid, ETH_ALEN); 846 next += ETH_ALEN; 847 } 848 if (params->req_ie_len) { 849 ev->cr.req_ie = next; 850 ev->cr.req_ie_len = params->req_ie_len; 851 memcpy((void *)ev->cr.req_ie, params->req_ie, 852 params->req_ie_len); 853 next += params->req_ie_len; 854 } 855 if (params->resp_ie_len) { 856 ev->cr.resp_ie = next; 857 ev->cr.resp_ie_len = params->resp_ie_len; 858 memcpy((void *)ev->cr.resp_ie, params->resp_ie, 859 params->resp_ie_len); 860 next += params->resp_ie_len; 861 } 862 if (params->fils.kek_len) { 863 ev->cr.fils.kek = next; 864 ev->cr.fils.kek_len = params->fils.kek_len; 865 memcpy((void *)ev->cr.fils.kek, params->fils.kek, 866 params->fils.kek_len); 867 next += params->fils.kek_len; 868 } 869 if (params->fils.pmk_len) { 870 ev->cr.fils.pmk = next; 871 ev->cr.fils.pmk_len = params->fils.pmk_len; 872 memcpy((void *)ev->cr.fils.pmk, params->fils.pmk, 873 params->fils.pmk_len); 874 next += params->fils.pmk_len; 875 } 876 if (params->fils.pmkid) { 877 ev->cr.fils.pmkid = next; 878 memcpy((void *)ev->cr.fils.pmkid, params->fils.pmkid, 879 WLAN_PMKID_LEN); 880 next += WLAN_PMKID_LEN; 881 } 882 ev->cr.fils.update_erp_next_seq_num = params->fils.update_erp_next_seq_num; 883 if (params->fils.update_erp_next_seq_num) 884 ev->cr.fils.erp_next_seq_num = params->fils.erp_next_seq_num; 885 if (params->bss) 886 cfg80211_hold_bss(bss_from_pub(params->bss)); 887 ev->cr.bss = params->bss; 888 ev->cr.status = params->status; 889 ev->cr.timeout_reason = params->timeout_reason; 890 891 spin_lock_irqsave(&wdev->event_lock, flags); 892 list_add_tail(&ev->list, &wdev->event_list); 893 spin_unlock_irqrestore(&wdev->event_lock, flags); 894 queue_work(cfg80211_wq, &rdev->event_work); 895 } 896 EXPORT_SYMBOL(cfg80211_connect_done); 897 898 /* Consumes bss object one way or another */ 899 void __cfg80211_roamed(struct wireless_dev *wdev, 900 struct cfg80211_roam_info *info) 901 { 902 #ifdef CONFIG_CFG80211_WEXT 903 union iwreq_data wrqu; 904 #endif 905 ASSERT_WDEV_LOCK(wdev); 906 907 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION && 908 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)) 909 goto out; 910 911 if (WARN_ON(!wdev->current_bss)) 912 goto out; 913 914 cfg80211_unhold_bss(wdev->current_bss); 915 cfg80211_put_bss(wdev->wiphy, &wdev->current_bss->pub); 916 wdev->current_bss = NULL; 917 918 if (WARN_ON(!info->bss)) 919 return; 920 921 cfg80211_hold_bss(bss_from_pub(info->bss)); 922 wdev->current_bss = bss_from_pub(info->bss); 923 924 wdev->unprot_beacon_reported = 0; 925 nl80211_send_roamed(wiphy_to_rdev(wdev->wiphy), 926 wdev->netdev, info, GFP_KERNEL); 927 928 #ifdef CONFIG_CFG80211_WEXT 929 if (info->req_ie) { 930 memset(&wrqu, 0, sizeof(wrqu)); 931 wrqu.data.length = info->req_ie_len; 932 wireless_send_event(wdev->netdev, IWEVASSOCREQIE, 933 &wrqu, info->req_ie); 934 } 935 936 if (info->resp_ie) { 937 memset(&wrqu, 0, sizeof(wrqu)); 938 wrqu.data.length = info->resp_ie_len; 939 wireless_send_event(wdev->netdev, IWEVASSOCRESPIE, 940 &wrqu, info->resp_ie); 941 } 942 943 memset(&wrqu, 0, sizeof(wrqu)); 944 wrqu.ap_addr.sa_family = ARPHRD_ETHER; 945 memcpy(wrqu.ap_addr.sa_data, info->bss->bssid, ETH_ALEN); 946 memcpy(wdev->wext.prev_bssid, info->bss->bssid, ETH_ALEN); 947 wdev->wext.prev_bssid_valid = true; 948 wireless_send_event(wdev->netdev, SIOCGIWAP, &wrqu, NULL); 949 #endif 950 951 return; 952 out: 953 cfg80211_put_bss(wdev->wiphy, info->bss); 954 } 955 956 /* Consumes info->bss object one way or another */ 957 void cfg80211_roamed(struct net_device *dev, struct cfg80211_roam_info *info, 958 gfp_t gfp) 959 { 960 struct wireless_dev *wdev = dev->ieee80211_ptr; 961 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 962 struct cfg80211_event *ev; 963 unsigned long flags; 964 u8 *next; 965 966 if (!info->bss) { 967 info->bss = cfg80211_get_bss(wdev->wiphy, info->channel, 968 info->bssid, wdev->ssid, 969 wdev->ssid_len, 970 wdev->conn_bss_type, 971 IEEE80211_PRIVACY_ANY); 972 } 973 974 if (WARN_ON(!info->bss)) 975 return; 976 977 ev = kzalloc(sizeof(*ev) + info->req_ie_len + info->resp_ie_len + 978 info->fils.kek_len + info->fils.pmk_len + 979 (info->fils.pmkid ? WLAN_PMKID_LEN : 0), gfp); 980 if (!ev) { 981 cfg80211_put_bss(wdev->wiphy, info->bss); 982 return; 983 } 984 985 ev->type = EVENT_ROAMED; 986 next = ((u8 *)ev) + sizeof(*ev); 987 if (info->req_ie_len) { 988 ev->rm.req_ie = next; 989 ev->rm.req_ie_len = info->req_ie_len; 990 memcpy((void *)ev->rm.req_ie, info->req_ie, info->req_ie_len); 991 next += info->req_ie_len; 992 } 993 if (info->resp_ie_len) { 994 ev->rm.resp_ie = next; 995 ev->rm.resp_ie_len = info->resp_ie_len; 996 memcpy((void *)ev->rm.resp_ie, info->resp_ie, 997 info->resp_ie_len); 998 next += info->resp_ie_len; 999 } 1000 if (info->fils.kek_len) { 1001 ev->rm.fils.kek = next; 1002 ev->rm.fils.kek_len = info->fils.kek_len; 1003 memcpy((void *)ev->rm.fils.kek, info->fils.kek, 1004 info->fils.kek_len); 1005 next += info->fils.kek_len; 1006 } 1007 if (info->fils.pmk_len) { 1008 ev->rm.fils.pmk = next; 1009 ev->rm.fils.pmk_len = info->fils.pmk_len; 1010 memcpy((void *)ev->rm.fils.pmk, info->fils.pmk, 1011 info->fils.pmk_len); 1012 next += info->fils.pmk_len; 1013 } 1014 if (info->fils.pmkid) { 1015 ev->rm.fils.pmkid = next; 1016 memcpy((void *)ev->rm.fils.pmkid, info->fils.pmkid, 1017 WLAN_PMKID_LEN); 1018 next += WLAN_PMKID_LEN; 1019 } 1020 ev->rm.fils.update_erp_next_seq_num = info->fils.update_erp_next_seq_num; 1021 if (info->fils.update_erp_next_seq_num) 1022 ev->rm.fils.erp_next_seq_num = info->fils.erp_next_seq_num; 1023 ev->rm.bss = info->bss; 1024 1025 spin_lock_irqsave(&wdev->event_lock, flags); 1026 list_add_tail(&ev->list, &wdev->event_list); 1027 spin_unlock_irqrestore(&wdev->event_lock, flags); 1028 queue_work(cfg80211_wq, &rdev->event_work); 1029 } 1030 EXPORT_SYMBOL(cfg80211_roamed); 1031 1032 void __cfg80211_port_authorized(struct wireless_dev *wdev, const u8 *bssid) 1033 { 1034 ASSERT_WDEV_LOCK(wdev); 1035 1036 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION)) 1037 return; 1038 1039 if (WARN_ON(!wdev->current_bss) || 1040 WARN_ON(!ether_addr_equal(wdev->current_bss->pub.bssid, bssid))) 1041 return; 1042 1043 nl80211_send_port_authorized(wiphy_to_rdev(wdev->wiphy), wdev->netdev, 1044 bssid); 1045 } 1046 1047 void cfg80211_port_authorized(struct net_device *dev, const u8 *bssid, 1048 gfp_t gfp) 1049 { 1050 struct wireless_dev *wdev = dev->ieee80211_ptr; 1051 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 1052 struct cfg80211_event *ev; 1053 unsigned long flags; 1054 1055 if (WARN_ON(!bssid)) 1056 return; 1057 1058 ev = kzalloc(sizeof(*ev), gfp); 1059 if (!ev) 1060 return; 1061 1062 ev->type = EVENT_PORT_AUTHORIZED; 1063 memcpy(ev->pa.bssid, bssid, ETH_ALEN); 1064 1065 /* 1066 * Use the wdev event list so that if there are pending 1067 * connected/roamed events, they will be reported first. 1068 */ 1069 spin_lock_irqsave(&wdev->event_lock, flags); 1070 list_add_tail(&ev->list, &wdev->event_list); 1071 spin_unlock_irqrestore(&wdev->event_lock, flags); 1072 queue_work(cfg80211_wq, &rdev->event_work); 1073 } 1074 EXPORT_SYMBOL(cfg80211_port_authorized); 1075 1076 void __cfg80211_disconnected(struct net_device *dev, const u8 *ie, 1077 size_t ie_len, u16 reason, bool from_ap) 1078 { 1079 struct wireless_dev *wdev = dev->ieee80211_ptr; 1080 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 1081 int i; 1082 #ifdef CONFIG_CFG80211_WEXT 1083 union iwreq_data wrqu; 1084 #endif 1085 1086 ASSERT_WDEV_LOCK(wdev); 1087 1088 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION && 1089 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)) 1090 return; 1091 1092 if (wdev->current_bss) { 1093 cfg80211_unhold_bss(wdev->current_bss); 1094 cfg80211_put_bss(wdev->wiphy, &wdev->current_bss->pub); 1095 } 1096 1097 wdev->current_bss = NULL; 1098 wdev->ssid_len = 0; 1099 wdev->conn_owner_nlportid = 0; 1100 kfree_sensitive(wdev->connect_keys); 1101 wdev->connect_keys = NULL; 1102 1103 nl80211_send_disconnected(rdev, dev, reason, ie, ie_len, from_ap); 1104 1105 /* stop critical protocol if supported */ 1106 if (rdev->ops->crit_proto_stop && rdev->crit_proto_nlportid) { 1107 rdev->crit_proto_nlportid = 0; 1108 rdev_crit_proto_stop(rdev, wdev); 1109 } 1110 1111 /* 1112 * Delete all the keys ... pairwise keys can't really 1113 * exist any more anyway, but default keys might. 1114 */ 1115 if (rdev->ops->del_key) { 1116 int max_key_idx = 5; 1117 1118 if (wiphy_ext_feature_isset( 1119 wdev->wiphy, 1120 NL80211_EXT_FEATURE_BEACON_PROTECTION) || 1121 wiphy_ext_feature_isset( 1122 wdev->wiphy, 1123 NL80211_EXT_FEATURE_BEACON_PROTECTION_CLIENT)) 1124 max_key_idx = 7; 1125 for (i = 0; i <= max_key_idx; i++) 1126 rdev_del_key(rdev, dev, i, false, NULL); 1127 } 1128 1129 rdev_set_qos_map(rdev, dev, NULL); 1130 1131 #ifdef CONFIG_CFG80211_WEXT 1132 memset(&wrqu, 0, sizeof(wrqu)); 1133 wrqu.ap_addr.sa_family = ARPHRD_ETHER; 1134 wireless_send_event(dev, SIOCGIWAP, &wrqu, NULL); 1135 wdev->wext.connect.ssid_len = 0; 1136 #endif 1137 1138 schedule_work(&cfg80211_disconnect_work); 1139 } 1140 1141 void cfg80211_disconnected(struct net_device *dev, u16 reason, 1142 const u8 *ie, size_t ie_len, 1143 bool locally_generated, gfp_t gfp) 1144 { 1145 struct wireless_dev *wdev = dev->ieee80211_ptr; 1146 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 1147 struct cfg80211_event *ev; 1148 unsigned long flags; 1149 1150 ev = kzalloc(sizeof(*ev) + ie_len, gfp); 1151 if (!ev) 1152 return; 1153 1154 ev->type = EVENT_DISCONNECTED; 1155 ev->dc.ie = ((u8 *)ev) + sizeof(*ev); 1156 ev->dc.ie_len = ie_len; 1157 memcpy((void *)ev->dc.ie, ie, ie_len); 1158 ev->dc.reason = reason; 1159 ev->dc.locally_generated = locally_generated; 1160 1161 spin_lock_irqsave(&wdev->event_lock, flags); 1162 list_add_tail(&ev->list, &wdev->event_list); 1163 spin_unlock_irqrestore(&wdev->event_lock, flags); 1164 queue_work(cfg80211_wq, &rdev->event_work); 1165 } 1166 EXPORT_SYMBOL(cfg80211_disconnected); 1167 1168 /* 1169 * API calls for nl80211/wext compatibility code 1170 */ 1171 int cfg80211_connect(struct cfg80211_registered_device *rdev, 1172 struct net_device *dev, 1173 struct cfg80211_connect_params *connect, 1174 struct cfg80211_cached_keys *connkeys, 1175 const u8 *prev_bssid) 1176 { 1177 struct wireless_dev *wdev = dev->ieee80211_ptr; 1178 int err; 1179 1180 ASSERT_WDEV_LOCK(wdev); 1181 1182 /* 1183 * If we have an ssid_len, we're trying to connect or are 1184 * already connected, so reject a new SSID unless it's the 1185 * same (which is the case for re-association.) 1186 */ 1187 if (wdev->ssid_len && 1188 (wdev->ssid_len != connect->ssid_len || 1189 memcmp(wdev->ssid, connect->ssid, wdev->ssid_len))) 1190 return -EALREADY; 1191 1192 /* 1193 * If connected, reject (re-)association unless prev_bssid 1194 * matches the current BSSID. 1195 */ 1196 if (wdev->current_bss) { 1197 if (!prev_bssid) 1198 return -EALREADY; 1199 if (!ether_addr_equal(prev_bssid, wdev->current_bss->pub.bssid)) 1200 return -ENOTCONN; 1201 } 1202 1203 /* 1204 * Reject if we're in the process of connecting with WEP, 1205 * this case isn't very interesting and trying to handle 1206 * it would make the code much more complex. 1207 */ 1208 if (wdev->connect_keys) 1209 return -EINPROGRESS; 1210 1211 cfg80211_oper_and_ht_capa(&connect->ht_capa_mask, 1212 rdev->wiphy.ht_capa_mod_mask); 1213 cfg80211_oper_and_vht_capa(&connect->vht_capa_mask, 1214 rdev->wiphy.vht_capa_mod_mask); 1215 1216 if (connkeys && connkeys->def >= 0) { 1217 int idx; 1218 u32 cipher; 1219 1220 idx = connkeys->def; 1221 cipher = connkeys->params[idx].cipher; 1222 /* If given a WEP key we may need it for shared key auth */ 1223 if (cipher == WLAN_CIPHER_SUITE_WEP40 || 1224 cipher == WLAN_CIPHER_SUITE_WEP104) { 1225 connect->key_idx = idx; 1226 connect->key = connkeys->params[idx].key; 1227 connect->key_len = connkeys->params[idx].key_len; 1228 1229 /* 1230 * If ciphers are not set (e.g. when going through 1231 * iwconfig), we have to set them appropriately here. 1232 */ 1233 if (connect->crypto.cipher_group == 0) 1234 connect->crypto.cipher_group = cipher; 1235 1236 if (connect->crypto.n_ciphers_pairwise == 0) { 1237 connect->crypto.n_ciphers_pairwise = 1; 1238 connect->crypto.ciphers_pairwise[0] = cipher; 1239 } 1240 } 1241 1242 connect->crypto.wep_keys = connkeys->params; 1243 connect->crypto.wep_tx_key = connkeys->def; 1244 } else { 1245 if (WARN_ON(connkeys)) 1246 return -EINVAL; 1247 } 1248 1249 wdev->connect_keys = connkeys; 1250 memcpy(wdev->ssid, connect->ssid, connect->ssid_len); 1251 wdev->ssid_len = connect->ssid_len; 1252 1253 wdev->conn_bss_type = connect->pbss ? IEEE80211_BSS_TYPE_PBSS : 1254 IEEE80211_BSS_TYPE_ESS; 1255 1256 if (!rdev->ops->connect) 1257 err = cfg80211_sme_connect(wdev, connect, prev_bssid); 1258 else 1259 err = rdev_connect(rdev, dev, connect); 1260 1261 if (err) { 1262 wdev->connect_keys = NULL; 1263 /* 1264 * This could be reassoc getting refused, don't clear 1265 * ssid_len in that case. 1266 */ 1267 if (!wdev->current_bss) 1268 wdev->ssid_len = 0; 1269 return err; 1270 } 1271 1272 return 0; 1273 } 1274 1275 int cfg80211_disconnect(struct cfg80211_registered_device *rdev, 1276 struct net_device *dev, u16 reason, bool wextev) 1277 { 1278 struct wireless_dev *wdev = dev->ieee80211_ptr; 1279 int err = 0; 1280 1281 ASSERT_WDEV_LOCK(wdev); 1282 1283 kfree_sensitive(wdev->connect_keys); 1284 wdev->connect_keys = NULL; 1285 1286 wdev->conn_owner_nlportid = 0; 1287 1288 if (wdev->conn) 1289 err = cfg80211_sme_disconnect(wdev, reason); 1290 else if (!rdev->ops->disconnect) 1291 cfg80211_mlme_down(rdev, dev); 1292 else if (wdev->ssid_len) 1293 err = rdev_disconnect(rdev, dev, reason); 1294 1295 /* 1296 * Clear ssid_len unless we actually were fully connected, 1297 * in which case cfg80211_disconnected() will take care of 1298 * this later. 1299 */ 1300 if (!wdev->current_bss) 1301 wdev->ssid_len = 0; 1302 1303 return err; 1304 } 1305 1306 /* 1307 * Used to clean up after the connection / connection attempt owner socket 1308 * disconnects 1309 */ 1310 void cfg80211_autodisconnect_wk(struct work_struct *work) 1311 { 1312 struct wireless_dev *wdev = 1313 container_of(work, struct wireless_dev, disconnect_wk); 1314 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 1315 1316 wdev_lock(wdev); 1317 1318 if (wdev->conn_owner_nlportid) { 1319 switch (wdev->iftype) { 1320 case NL80211_IFTYPE_ADHOC: 1321 __cfg80211_leave_ibss(rdev, wdev->netdev, false); 1322 break; 1323 case NL80211_IFTYPE_AP: 1324 case NL80211_IFTYPE_P2P_GO: 1325 __cfg80211_stop_ap(rdev, wdev->netdev, false); 1326 break; 1327 case NL80211_IFTYPE_MESH_POINT: 1328 __cfg80211_leave_mesh(rdev, wdev->netdev); 1329 break; 1330 case NL80211_IFTYPE_STATION: 1331 case NL80211_IFTYPE_P2P_CLIENT: 1332 /* 1333 * Use disconnect_bssid if still connecting and 1334 * ops->disconnect not implemented. Otherwise we can 1335 * use cfg80211_disconnect. 1336 */ 1337 if (rdev->ops->disconnect || wdev->current_bss) 1338 cfg80211_disconnect(rdev, wdev->netdev, 1339 WLAN_REASON_DEAUTH_LEAVING, 1340 true); 1341 else 1342 cfg80211_mlme_deauth(rdev, wdev->netdev, 1343 wdev->disconnect_bssid, 1344 NULL, 0, 1345 WLAN_REASON_DEAUTH_LEAVING, 1346 false); 1347 break; 1348 default: 1349 break; 1350 } 1351 } 1352 1353 wdev_unlock(wdev); 1354 } 1355