2 * SME code for cfg80211's connect emulation.
4 * Copyright 2009 Johannes Berg <johannes@sipsolutions.net>
5 * Copyright (C) 2009 Intel Corporation. All rights reserved.
8 #include <linux/etherdevice.h>
9 #include <linux/if_arp.h>
10 #include <linux/slab.h>
11 #include <linux/workqueue.h>
12 #include <linux/wireless.h>
13 #include <linux/export.h>
14 #include <net/iw_handler.h>
15 #include <net/cfg80211.h>
16 #include <net/rtnetlink.h>
21 struct cfg80211_conn {
22 struct cfg80211_connect_params params;
23 /* these are sub-states of the _CONNECTING sme_state */
26 CFG80211_CONN_SCANNING,
27 CFG80211_CONN_SCAN_AGAIN,
28 CFG80211_CONN_AUTHENTICATE_NEXT,
29 CFG80211_CONN_AUTHENTICATING,
30 CFG80211_CONN_ASSOCIATE_NEXT,
31 CFG80211_CONN_ASSOCIATING,
32 CFG80211_CONN_DEAUTH_ASSOC_FAIL,
34 u8 bssid[ETH_ALEN], prev_bssid[ETH_ALEN];
37 bool auto_auth, prev_bssid_valid;
40 static bool cfg80211_is_all_idle(void)
42 struct cfg80211_registered_device *rdev;
43 struct wireless_dev *wdev;
44 bool is_all_idle = true;
46 mutex_lock(&cfg80211_mutex);
49 * All devices must be idle as otherwise if you are actively
50 * scanning some new beacon hints could be learned and would
51 * count as new regulatory hints.
53 list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
54 cfg80211_lock_rdev(rdev);
55 list_for_each_entry(wdev, &rdev->wdev_list, list) {
57 if (wdev->sme_state != CFG80211_SME_IDLE)
61 cfg80211_unlock_rdev(rdev);
64 mutex_unlock(&cfg80211_mutex);
69 static void disconnect_work(struct work_struct *work)
71 if (!cfg80211_is_all_idle())
74 regulatory_hint_disconnect();
77 static DECLARE_WORK(cfg80211_disconnect_work, disconnect_work);
79 static int cfg80211_conn_scan(struct wireless_dev *wdev)
81 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
82 struct cfg80211_scan_request *request;
86 ASSERT_RDEV_LOCK(rdev);
87 ASSERT_WDEV_LOCK(wdev);
88 lockdep_assert_held(&rdev->sched_scan_mtx);
93 if (wdev->conn->params.channel) {
96 enum ieee80211_band band;
99 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
100 if (!wdev->wiphy->bands[band])
102 n_channels += wdev->wiphy->bands[band]->n_channels;
105 request = kzalloc(sizeof(*request) + sizeof(request->ssids[0]) +
106 sizeof(request->channels[0]) * n_channels,
111 if (wdev->conn->params.channel)
112 request->channels[0] = wdev->conn->params.channel;
115 enum ieee80211_band band;
116 struct ieee80211_supported_band *bands;
117 struct ieee80211_channel *channel;
119 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
120 bands = wdev->wiphy->bands[band];
123 for (j = 0; j < bands->n_channels; j++) {
124 channel = &bands->channels[j];
125 if (channel->flags & IEEE80211_CHAN_DISABLED)
127 request->channels[i++] = channel;
129 request->rates[band] = (1 << bands->n_bitrates) - 1;
133 request->n_channels = n_channels;
134 request->ssids = (void *)&request->channels[n_channels];
135 request->n_ssids = 1;
137 memcpy(request->ssids[0].ssid, wdev->conn->params.ssid,
138 wdev->conn->params.ssid_len);
139 request->ssids[0].ssid_len = wdev->conn->params.ssid_len;
141 request->wdev = wdev;
142 request->wiphy = &rdev->wiphy;
143 request->scan_start = jiffies;
145 rdev->scan_req = request;
147 err = rdev_scan(rdev, request);
149 wdev->conn->state = CFG80211_CONN_SCANNING;
150 nl80211_send_scan_start(rdev, wdev);
151 dev_hold(wdev->netdev);
153 rdev->scan_req = NULL;
159 static int cfg80211_conn_do_work(struct wireless_dev *wdev)
161 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
162 struct cfg80211_connect_params *params;
163 struct cfg80211_assoc_request req = {};
166 ASSERT_WDEV_LOCK(wdev);
171 params = &wdev->conn->params;
173 switch (wdev->conn->state) {
174 case CFG80211_CONN_SCAN_AGAIN:
175 return cfg80211_conn_scan(wdev);
176 case CFG80211_CONN_AUTHENTICATE_NEXT:
177 BUG_ON(!rdev->ops->auth);
178 wdev->conn->state = CFG80211_CONN_AUTHENTICATING;
179 return __cfg80211_mlme_auth(rdev, wdev->netdev,
180 params->channel, params->auth_type,
182 params->ssid, params->ssid_len,
184 params->key, params->key_len,
185 params->key_idx, NULL, 0);
186 case CFG80211_CONN_ASSOCIATE_NEXT:
187 BUG_ON(!rdev->ops->assoc);
188 wdev->conn->state = CFG80211_CONN_ASSOCIATING;
189 if (wdev->conn->prev_bssid_valid)
190 req.prev_bssid = wdev->conn->prev_bssid;
192 req.ie_len = params->ie_len;
193 req.use_mfp = params->mfp != NL80211_MFP_NO;
194 req.crypto = params->crypto;
195 req.flags = params->flags;
196 req.ht_capa = params->ht_capa;
197 req.ht_capa_mask = params->ht_capa_mask;
198 req.vht_capa = params->vht_capa;
199 req.vht_capa_mask = params->vht_capa_mask;
201 err = __cfg80211_mlme_assoc(rdev, wdev->netdev, params->channel,
202 params->bssid, params->ssid,
203 params->ssid_len, &req);
205 __cfg80211_mlme_deauth(rdev, wdev->netdev, params->bssid,
207 WLAN_REASON_DEAUTH_LEAVING,
210 case CFG80211_CONN_DEAUTH_ASSOC_FAIL:
211 __cfg80211_mlme_deauth(rdev, wdev->netdev, params->bssid,
213 WLAN_REASON_DEAUTH_LEAVING, false);
214 /* return an error so that we call __cfg80211_connect_result() */
221 void cfg80211_conn_work(struct work_struct *work)
223 struct cfg80211_registered_device *rdev =
224 container_of(work, struct cfg80211_registered_device, conn_work);
225 struct wireless_dev *wdev;
226 u8 bssid_buf[ETH_ALEN], *bssid = NULL;
229 cfg80211_lock_rdev(rdev);
230 mutex_lock(&rdev->devlist_mtx);
232 list_for_each_entry(wdev, &rdev->wdev_list, list) {
234 if (!netif_running(wdev->netdev)) {
238 if (wdev->sme_state != CFG80211_SME_CONNECTING || !wdev->conn) {
242 if (wdev->conn->params.bssid) {
243 memcpy(bssid_buf, wdev->conn->params.bssid, ETH_ALEN);
246 if (cfg80211_conn_do_work(wdev))
247 __cfg80211_connect_result(
250 WLAN_STATUS_UNSPECIFIED_FAILURE,
255 mutex_unlock(&rdev->devlist_mtx);
256 cfg80211_unlock_rdev(rdev);
260 static struct cfg80211_bss *cfg80211_get_conn_bss(struct wireless_dev *wdev)
262 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
263 struct cfg80211_bss *bss;
264 u16 capa = WLAN_CAPABILITY_ESS;
266 ASSERT_WDEV_LOCK(wdev);
268 if (wdev->conn->params.privacy)
269 capa |= WLAN_CAPABILITY_PRIVACY;
271 bss = cfg80211_get_bss(wdev->wiphy, wdev->conn->params.channel,
272 wdev->conn->params.bssid,
273 wdev->conn->params.ssid,
274 wdev->conn->params.ssid_len,
275 WLAN_CAPABILITY_ESS | WLAN_CAPABILITY_PRIVACY,
280 memcpy(wdev->conn->bssid, bss->bssid, ETH_ALEN);
281 wdev->conn->params.bssid = wdev->conn->bssid;
282 wdev->conn->params.channel = bss->channel;
283 wdev->conn->state = CFG80211_CONN_AUTHENTICATE_NEXT;
284 schedule_work(&rdev->conn_work);
289 static void __cfg80211_sme_scan_done(struct net_device *dev)
291 struct wireless_dev *wdev = dev->ieee80211_ptr;
292 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
293 struct cfg80211_bss *bss;
295 ASSERT_WDEV_LOCK(wdev);
297 if (wdev->sme_state != CFG80211_SME_CONNECTING)
303 if (wdev->conn->state != CFG80211_CONN_SCANNING &&
304 wdev->conn->state != CFG80211_CONN_SCAN_AGAIN)
307 bss = cfg80211_get_conn_bss(wdev);
309 cfg80211_put_bss(&rdev->wiphy, bss);
312 if (wdev->conn->state == CFG80211_CONN_SCAN_AGAIN)
313 schedule_work(&rdev->conn_work);
315 __cfg80211_connect_result(
317 wdev->conn->params.bssid,
319 WLAN_STATUS_UNSPECIFIED_FAILURE,
324 void cfg80211_sme_scan_done(struct net_device *dev)
326 struct wireless_dev *wdev = dev->ieee80211_ptr;
329 __cfg80211_sme_scan_done(dev);
333 void cfg80211_sme_rx_auth(struct net_device *dev,
334 const u8 *buf, size_t len)
336 struct wireless_dev *wdev = dev->ieee80211_ptr;
337 struct wiphy *wiphy = wdev->wiphy;
338 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
339 struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)buf;
340 u16 status_code = le16_to_cpu(mgmt->u.auth.status_code);
342 ASSERT_WDEV_LOCK(wdev);
344 /* should only RX auth frames when connecting */
345 if (wdev->sme_state != CFG80211_SME_CONNECTING)
348 if (WARN_ON(!wdev->conn))
351 if (status_code == WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG &&
352 wdev->conn->auto_auth &&
353 wdev->conn->params.auth_type != NL80211_AUTHTYPE_NETWORK_EAP) {
354 /* select automatically between only open, shared, leap */
355 switch (wdev->conn->params.auth_type) {
356 case NL80211_AUTHTYPE_OPEN_SYSTEM:
357 if (wdev->connect_keys)
358 wdev->conn->params.auth_type =
359 NL80211_AUTHTYPE_SHARED_KEY;
361 wdev->conn->params.auth_type =
362 NL80211_AUTHTYPE_NETWORK_EAP;
364 case NL80211_AUTHTYPE_SHARED_KEY:
365 wdev->conn->params.auth_type =
366 NL80211_AUTHTYPE_NETWORK_EAP;
370 wdev->conn->params.auth_type =
371 NL80211_AUTHTYPE_OPEN_SYSTEM;
374 wdev->conn->state = CFG80211_CONN_AUTHENTICATE_NEXT;
375 schedule_work(&rdev->conn_work);
376 } else if (status_code != WLAN_STATUS_SUCCESS) {
377 __cfg80211_connect_result(dev, mgmt->bssid, NULL, 0, NULL, 0,
378 status_code, false, NULL);
379 } else if (wdev->sme_state == CFG80211_SME_CONNECTING &&
380 wdev->conn->state == CFG80211_CONN_AUTHENTICATING) {
381 wdev->conn->state = CFG80211_CONN_ASSOCIATE_NEXT;
382 schedule_work(&rdev->conn_work);
386 bool cfg80211_sme_failed_reassoc(struct wireless_dev *wdev)
388 struct wiphy *wiphy = wdev->wiphy;
389 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
391 if (WARN_ON(!wdev->conn))
394 if (!wdev->conn->prev_bssid_valid)
398 * Some stupid APs don't accept reassoc, so we
399 * need to fall back to trying regular assoc.
401 wdev->conn->prev_bssid_valid = false;
402 wdev->conn->state = CFG80211_CONN_ASSOCIATE_NEXT;
403 schedule_work(&rdev->conn_work);
408 void cfg80211_sme_failed_assoc(struct wireless_dev *wdev)
410 struct wiphy *wiphy = wdev->wiphy;
411 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
413 wdev->conn->state = CFG80211_CONN_DEAUTH_ASSOC_FAIL;
414 schedule_work(&rdev->conn_work);
417 void __cfg80211_connect_result(struct net_device *dev, const u8 *bssid,
418 const u8 *req_ie, size_t req_ie_len,
419 const u8 *resp_ie, size_t resp_ie_len,
420 u16 status, bool wextev,
421 struct cfg80211_bss *bss)
423 struct wireless_dev *wdev = dev->ieee80211_ptr;
424 const u8 *country_ie;
425 #ifdef CONFIG_CFG80211_WEXT
426 union iwreq_data wrqu;
429 ASSERT_WDEV_LOCK(wdev);
431 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION &&
432 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT))
435 if (wdev->sme_state != CFG80211_SME_CONNECTING)
438 nl80211_send_connect_result(wiphy_to_dev(wdev->wiphy), dev,
439 bssid, req_ie, req_ie_len,
440 resp_ie, resp_ie_len,
443 #ifdef CONFIG_CFG80211_WEXT
445 if (req_ie && status == WLAN_STATUS_SUCCESS) {
446 memset(&wrqu, 0, sizeof(wrqu));
447 wrqu.data.length = req_ie_len;
448 wireless_send_event(dev, IWEVASSOCREQIE, &wrqu, req_ie);
451 if (resp_ie && status == WLAN_STATUS_SUCCESS) {
452 memset(&wrqu, 0, sizeof(wrqu));
453 wrqu.data.length = resp_ie_len;
454 wireless_send_event(dev, IWEVASSOCRESPIE, &wrqu, resp_ie);
457 memset(&wrqu, 0, sizeof(wrqu));
458 wrqu.ap_addr.sa_family = ARPHRD_ETHER;
459 if (bssid && status == WLAN_STATUS_SUCCESS) {
460 memcpy(wrqu.ap_addr.sa_data, bssid, ETH_ALEN);
461 memcpy(wdev->wext.prev_bssid, bssid, ETH_ALEN);
462 wdev->wext.prev_bssid_valid = true;
464 wireless_send_event(dev, SIOCGIWAP, &wrqu, NULL);
468 if (wdev->current_bss) {
469 cfg80211_unhold_bss(wdev->current_bss);
470 cfg80211_put_bss(wdev->wiphy, &wdev->current_bss->pub);
471 wdev->current_bss = NULL;
475 wdev->conn->state = CFG80211_CONN_IDLE;
477 if (status != WLAN_STATUS_SUCCESS) {
478 wdev->sme_state = CFG80211_SME_IDLE;
480 kfree(wdev->conn->ie);
483 kfree(wdev->connect_keys);
484 wdev->connect_keys = NULL;
486 cfg80211_put_bss(wdev->wiphy, bss);
491 bss = cfg80211_get_bss(wdev->wiphy,
492 wdev->conn ? wdev->conn->params.channel :
495 wdev->ssid, wdev->ssid_len,
497 WLAN_CAPABILITY_ESS);
502 cfg80211_hold_bss(bss_from_pub(bss));
503 wdev->current_bss = bss_from_pub(bss);
505 wdev->sme_state = CFG80211_SME_CONNECTED;
506 cfg80211_upload_connect_keys(wdev);
509 country_ie = ieee80211_bss_get_ie(bss, WLAN_EID_COUNTRY);
515 country_ie = kmemdup(country_ie, 2 + country_ie[1], GFP_ATOMIC);
522 * ieee80211_bss_get_ie() ensures we can access:
523 * - country_ie + 2, the start of the country ie data, and
524 * - and country_ie[1] which is the IE length
526 regulatory_hint_11d(wdev->wiphy, bss->channel->band,
527 country_ie + 2, country_ie[1]);
531 void cfg80211_connect_result(struct net_device *dev, const u8 *bssid,
532 const u8 *req_ie, size_t req_ie_len,
533 const u8 *resp_ie, size_t resp_ie_len,
534 u16 status, gfp_t gfp)
536 struct wireless_dev *wdev = dev->ieee80211_ptr;
537 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
538 struct cfg80211_event *ev;
541 CFG80211_DEV_WARN_ON(wdev->sme_state != CFG80211_SME_CONNECTING);
543 ev = kzalloc(sizeof(*ev) + req_ie_len + resp_ie_len, gfp);
547 ev->type = EVENT_CONNECT_RESULT;
549 memcpy(ev->cr.bssid, bssid, ETH_ALEN);
551 ev->cr.req_ie = ((u8 *)ev) + sizeof(*ev);
552 ev->cr.req_ie_len = req_ie_len;
553 memcpy((void *)ev->cr.req_ie, req_ie, req_ie_len);
556 ev->cr.resp_ie = ((u8 *)ev) + sizeof(*ev) + req_ie_len;
557 ev->cr.resp_ie_len = resp_ie_len;
558 memcpy((void *)ev->cr.resp_ie, resp_ie, resp_ie_len);
560 ev->cr.status = status;
562 spin_lock_irqsave(&wdev->event_lock, flags);
563 list_add_tail(&ev->list, &wdev->event_list);
564 spin_unlock_irqrestore(&wdev->event_lock, flags);
565 queue_work(cfg80211_wq, &rdev->event_work);
567 EXPORT_SYMBOL(cfg80211_connect_result);
569 void __cfg80211_roamed(struct wireless_dev *wdev,
570 struct cfg80211_bss *bss,
571 const u8 *req_ie, size_t req_ie_len,
572 const u8 *resp_ie, size_t resp_ie_len)
574 #ifdef CONFIG_CFG80211_WEXT
575 union iwreq_data wrqu;
577 ASSERT_WDEV_LOCK(wdev);
579 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION &&
580 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT))
583 if (wdev->sme_state != CFG80211_SME_CONNECTED)
586 /* internal error -- how did we get to CONNECTED w/o BSS? */
587 if (WARN_ON(!wdev->current_bss)) {
591 cfg80211_unhold_bss(wdev->current_bss);
592 cfg80211_put_bss(wdev->wiphy, &wdev->current_bss->pub);
593 wdev->current_bss = NULL;
595 cfg80211_hold_bss(bss_from_pub(bss));
596 wdev->current_bss = bss_from_pub(bss);
598 nl80211_send_roamed(wiphy_to_dev(wdev->wiphy), wdev->netdev, bss->bssid,
599 req_ie, req_ie_len, resp_ie, resp_ie_len,
602 #ifdef CONFIG_CFG80211_WEXT
604 memset(&wrqu, 0, sizeof(wrqu));
605 wrqu.data.length = req_ie_len;
606 wireless_send_event(wdev->netdev, IWEVASSOCREQIE,
611 memset(&wrqu, 0, sizeof(wrqu));
612 wrqu.data.length = resp_ie_len;
613 wireless_send_event(wdev->netdev, IWEVASSOCRESPIE,
617 memset(&wrqu, 0, sizeof(wrqu));
618 wrqu.ap_addr.sa_family = ARPHRD_ETHER;
619 memcpy(wrqu.ap_addr.sa_data, bss->bssid, ETH_ALEN);
620 memcpy(wdev->wext.prev_bssid, bss->bssid, ETH_ALEN);
621 wdev->wext.prev_bssid_valid = true;
622 wireless_send_event(wdev->netdev, SIOCGIWAP, &wrqu, NULL);
627 cfg80211_put_bss(wdev->wiphy, bss);
630 void cfg80211_roamed(struct net_device *dev,
631 struct ieee80211_channel *channel,
633 const u8 *req_ie, size_t req_ie_len,
634 const u8 *resp_ie, size_t resp_ie_len, gfp_t gfp)
636 struct wireless_dev *wdev = dev->ieee80211_ptr;
637 struct cfg80211_bss *bss;
639 CFG80211_DEV_WARN_ON(wdev->sme_state != CFG80211_SME_CONNECTED);
641 bss = cfg80211_get_bss(wdev->wiphy, channel, bssid, wdev->ssid,
642 wdev->ssid_len, WLAN_CAPABILITY_ESS,
643 WLAN_CAPABILITY_ESS);
647 cfg80211_roamed_bss(dev, bss, req_ie, req_ie_len, resp_ie,
650 EXPORT_SYMBOL(cfg80211_roamed);
652 void cfg80211_roamed_bss(struct net_device *dev,
653 struct cfg80211_bss *bss, const u8 *req_ie,
654 size_t req_ie_len, const u8 *resp_ie,
655 size_t resp_ie_len, gfp_t gfp)
657 struct wireless_dev *wdev = dev->ieee80211_ptr;
658 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
659 struct cfg80211_event *ev;
662 CFG80211_DEV_WARN_ON(wdev->sme_state != CFG80211_SME_CONNECTED);
667 ev = kzalloc(sizeof(*ev) + req_ie_len + resp_ie_len, gfp);
669 cfg80211_put_bss(wdev->wiphy, bss);
673 ev->type = EVENT_ROAMED;
674 ev->rm.req_ie = ((u8 *)ev) + sizeof(*ev);
675 ev->rm.req_ie_len = req_ie_len;
676 memcpy((void *)ev->rm.req_ie, req_ie, req_ie_len);
677 ev->rm.resp_ie = ((u8 *)ev) + sizeof(*ev) + req_ie_len;
678 ev->rm.resp_ie_len = resp_ie_len;
679 memcpy((void *)ev->rm.resp_ie, resp_ie, resp_ie_len);
682 spin_lock_irqsave(&wdev->event_lock, flags);
683 list_add_tail(&ev->list, &wdev->event_list);
684 spin_unlock_irqrestore(&wdev->event_lock, flags);
685 queue_work(cfg80211_wq, &rdev->event_work);
687 EXPORT_SYMBOL(cfg80211_roamed_bss);
689 void __cfg80211_disconnected(struct net_device *dev, const u8 *ie,
690 size_t ie_len, u16 reason, bool from_ap)
692 struct wireless_dev *wdev = dev->ieee80211_ptr;
693 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
695 #ifdef CONFIG_CFG80211_WEXT
696 union iwreq_data wrqu;
699 ASSERT_WDEV_LOCK(wdev);
701 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION &&
702 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT))
705 if (wdev->sme_state != CFG80211_SME_CONNECTED)
708 if (wdev->current_bss) {
709 cfg80211_unhold_bss(wdev->current_bss);
710 cfg80211_put_bss(wdev->wiphy, &wdev->current_bss->pub);
713 wdev->current_bss = NULL;
714 wdev->sme_state = CFG80211_SME_IDLE;
718 kfree(wdev->conn->ie);
719 wdev->conn->ie = NULL;
724 nl80211_send_disconnected(rdev, dev, reason, ie, ie_len, from_ap);
727 * Delete all the keys ... pairwise keys can't really
728 * exist any more anyway, but default keys might.
730 if (rdev->ops->del_key)
731 for (i = 0; i < 6; i++)
732 rdev_del_key(rdev, dev, i, false, NULL);
734 #ifdef CONFIG_CFG80211_WEXT
735 memset(&wrqu, 0, sizeof(wrqu));
736 wrqu.ap_addr.sa_family = ARPHRD_ETHER;
737 wireless_send_event(dev, SIOCGIWAP, &wrqu, NULL);
738 wdev->wext.connect.ssid_len = 0;
741 schedule_work(&cfg80211_disconnect_work);
744 void cfg80211_disconnected(struct net_device *dev, u16 reason,
745 u8 *ie, size_t ie_len, gfp_t gfp)
747 struct wireless_dev *wdev = dev->ieee80211_ptr;
748 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
749 struct cfg80211_event *ev;
752 CFG80211_DEV_WARN_ON(wdev->sme_state != CFG80211_SME_CONNECTED);
754 ev = kzalloc(sizeof(*ev) + ie_len, gfp);
758 ev->type = EVENT_DISCONNECTED;
759 ev->dc.ie = ((u8 *)ev) + sizeof(*ev);
760 ev->dc.ie_len = ie_len;
761 memcpy((void *)ev->dc.ie, ie, ie_len);
762 ev->dc.reason = reason;
764 spin_lock_irqsave(&wdev->event_lock, flags);
765 list_add_tail(&ev->list, &wdev->event_list);
766 spin_unlock_irqrestore(&wdev->event_lock, flags);
767 queue_work(cfg80211_wq, &rdev->event_work);
769 EXPORT_SYMBOL(cfg80211_disconnected);
771 int __cfg80211_connect(struct cfg80211_registered_device *rdev,
772 struct net_device *dev,
773 struct cfg80211_connect_params *connect,
774 struct cfg80211_cached_keys *connkeys,
775 const u8 *prev_bssid)
777 struct wireless_dev *wdev = dev->ieee80211_ptr;
778 struct cfg80211_bss *bss = NULL;
781 ASSERT_WDEV_LOCK(wdev);
783 if (wdev->sme_state != CFG80211_SME_IDLE)
786 if (WARN_ON(wdev->connect_keys)) {
787 kfree(wdev->connect_keys);
788 wdev->connect_keys = NULL;
791 cfg80211_oper_and_ht_capa(&connect->ht_capa_mask,
792 rdev->wiphy.ht_capa_mod_mask);
794 if (connkeys && connkeys->def >= 0) {
799 cipher = connkeys->params[idx].cipher;
800 /* If given a WEP key we may need it for shared key auth */
801 if (cipher == WLAN_CIPHER_SUITE_WEP40 ||
802 cipher == WLAN_CIPHER_SUITE_WEP104) {
803 connect->key_idx = idx;
804 connect->key = connkeys->params[idx].key;
805 connect->key_len = connkeys->params[idx].key_len;
808 * If ciphers are not set (e.g. when going through
809 * iwconfig), we have to set them appropriately here.
811 if (connect->crypto.cipher_group == 0)
812 connect->crypto.cipher_group = cipher;
814 if (connect->crypto.n_ciphers_pairwise == 0) {
815 connect->crypto.n_ciphers_pairwise = 1;
816 connect->crypto.ciphers_pairwise[0] = cipher;
821 if (!rdev->ops->connect) {
822 if (!rdev->ops->auth || !rdev->ops->assoc)
825 if (WARN_ON(wdev->conn))
828 wdev->conn = kzalloc(sizeof(*wdev->conn), GFP_KERNEL);
833 * Copy all parameters, and treat explicitly IEs, BSSID, SSID.
835 memcpy(&wdev->conn->params, connect, sizeof(*connect));
836 if (connect->bssid) {
837 wdev->conn->params.bssid = wdev->conn->bssid;
838 memcpy(wdev->conn->bssid, connect->bssid, ETH_ALEN);
842 wdev->conn->ie = kmemdup(connect->ie, connect->ie_len,
844 wdev->conn->params.ie = wdev->conn->ie;
845 if (!wdev->conn->ie) {
852 if (connect->auth_type == NL80211_AUTHTYPE_AUTOMATIC) {
853 wdev->conn->auto_auth = true;
854 /* start with open system ... should mostly work */
855 wdev->conn->params.auth_type =
856 NL80211_AUTHTYPE_OPEN_SYSTEM;
858 wdev->conn->auto_auth = false;
861 memcpy(wdev->ssid, connect->ssid, connect->ssid_len);
862 wdev->ssid_len = connect->ssid_len;
863 wdev->conn->params.ssid = wdev->ssid;
864 wdev->conn->params.ssid_len = connect->ssid_len;
866 /* see if we have the bss already */
867 bss = cfg80211_get_conn_bss(wdev);
869 wdev->sme_state = CFG80211_SME_CONNECTING;
870 wdev->connect_keys = connkeys;
873 memcpy(wdev->conn->prev_bssid, prev_bssid, ETH_ALEN);
874 wdev->conn->prev_bssid_valid = true;
877 /* we're good if we have a matching bss struct */
879 wdev->conn->state = CFG80211_CONN_AUTHENTICATE_NEXT;
880 err = cfg80211_conn_do_work(wdev);
881 cfg80211_put_bss(wdev->wiphy, bss);
883 /* otherwise we'll need to scan for the AP first */
884 err = cfg80211_conn_scan(wdev);
886 * If we can't scan right now, then we need to scan again
887 * after the current scan finished, since the parameters
888 * changed (unless we find a good AP anyway).
892 wdev->conn->state = CFG80211_CONN_SCAN_AGAIN;
896 kfree(wdev->conn->ie);
899 wdev->sme_state = CFG80211_SME_IDLE;
900 wdev->connect_keys = NULL;
906 wdev->sme_state = CFG80211_SME_CONNECTING;
907 wdev->connect_keys = connkeys;
908 err = rdev_connect(rdev, dev, connect);
910 wdev->connect_keys = NULL;
911 wdev->sme_state = CFG80211_SME_IDLE;
915 memcpy(wdev->ssid, connect->ssid, connect->ssid_len);
916 wdev->ssid_len = connect->ssid_len;
922 int cfg80211_connect(struct cfg80211_registered_device *rdev,
923 struct net_device *dev,
924 struct cfg80211_connect_params *connect,
925 struct cfg80211_cached_keys *connkeys)
929 mutex_lock(&rdev->devlist_mtx);
930 /* might request scan - scan_mtx -> wdev_mtx dependency */
931 mutex_lock(&rdev->sched_scan_mtx);
932 wdev_lock(dev->ieee80211_ptr);
933 err = __cfg80211_connect(rdev, dev, connect, connkeys, NULL);
934 wdev_unlock(dev->ieee80211_ptr);
935 mutex_unlock(&rdev->sched_scan_mtx);
936 mutex_unlock(&rdev->devlist_mtx);
941 int __cfg80211_disconnect(struct cfg80211_registered_device *rdev,
942 struct net_device *dev, u16 reason, bool wextev)
944 struct wireless_dev *wdev = dev->ieee80211_ptr;
947 ASSERT_WDEV_LOCK(wdev);
949 if (wdev->sme_state == CFG80211_SME_IDLE)
952 kfree(wdev->connect_keys);
953 wdev->connect_keys = NULL;
955 if (!rdev->ops->disconnect) {
956 if (!rdev->ops->deauth)
959 /* was it connected by userspace SME? */
961 cfg80211_mlme_down(rdev, dev);
965 if (wdev->sme_state == CFG80211_SME_CONNECTING &&
966 (wdev->conn->state == CFG80211_CONN_SCANNING ||
967 wdev->conn->state == CFG80211_CONN_SCAN_AGAIN)) {
968 wdev->sme_state = CFG80211_SME_IDLE;
969 kfree(wdev->conn->ie);
976 /* wdev->conn->params.bssid must be set if > SCANNING */
977 err = __cfg80211_mlme_deauth(rdev, dev,
978 wdev->conn->params.bssid,
979 NULL, 0, reason, false);
983 err = rdev_disconnect(rdev, dev, reason);
988 if (wdev->sme_state == CFG80211_SME_CONNECTED)
989 __cfg80211_disconnected(dev, NULL, 0, 0, false);
990 else if (wdev->sme_state == CFG80211_SME_CONNECTING)
991 __cfg80211_connect_result(dev, NULL, NULL, 0, NULL, 0,
992 WLAN_STATUS_UNSPECIFIED_FAILURE,
998 int cfg80211_disconnect(struct cfg80211_registered_device *rdev,
999 struct net_device *dev,
1000 u16 reason, bool wextev)
1004 wdev_lock(dev->ieee80211_ptr);
1005 err = __cfg80211_disconnect(rdev, dev, reason, wextev);
1006 wdev_unlock(dev->ieee80211_ptr);
1011 void cfg80211_sme_disassoc(struct net_device *dev,
1012 struct cfg80211_internal_bss *bss)
1014 struct wireless_dev *wdev = dev->ieee80211_ptr;
1015 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
1018 ASSERT_WDEV_LOCK(wdev);
1023 if (wdev->conn->state == CFG80211_CONN_IDLE)
1027 * Ok, so the association was made by this SME -- we don't
1028 * want it any more so deauthenticate too.
1031 memcpy(bssid, bss->pub.bssid, ETH_ALEN);
1033 __cfg80211_mlme_deauth(rdev, dev, bssid, NULL, 0,
1034 WLAN_REASON_DEAUTH_LEAVING, false);