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 const u8 *prev_bssid = NULL;
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 prev_bssid = wdev->conn->prev_bssid;
191 err = __cfg80211_mlme_assoc(rdev, wdev->netdev,
192 params->channel, params->bssid,
194 params->ssid, params->ssid_len,
195 params->ie, params->ie_len,
196 params->mfp != NL80211_MFP_NO,
198 params->flags, ¶ms->ht_capa,
199 ¶ms->ht_capa_mask);
201 __cfg80211_mlme_deauth(rdev, wdev->netdev, params->bssid,
203 WLAN_REASON_DEAUTH_LEAVING,
206 case CFG80211_CONN_DEAUTH_ASSOC_FAIL:
207 __cfg80211_mlme_deauth(rdev, wdev->netdev, params->bssid,
209 WLAN_REASON_DEAUTH_LEAVING, false);
210 /* return an error so that we call __cfg80211_connect_result() */
217 void cfg80211_conn_work(struct work_struct *work)
219 struct cfg80211_registered_device *rdev =
220 container_of(work, struct cfg80211_registered_device, conn_work);
221 struct wireless_dev *wdev;
222 u8 bssid_buf[ETH_ALEN], *bssid = NULL;
225 cfg80211_lock_rdev(rdev);
226 mutex_lock(&rdev->devlist_mtx);
228 list_for_each_entry(wdev, &rdev->wdev_list, list) {
230 if (!netif_running(wdev->netdev)) {
234 if (wdev->sme_state != CFG80211_SME_CONNECTING) {
238 if (wdev->conn->params.bssid) {
239 memcpy(bssid_buf, wdev->conn->params.bssid, ETH_ALEN);
242 if (cfg80211_conn_do_work(wdev))
243 __cfg80211_connect_result(
246 WLAN_STATUS_UNSPECIFIED_FAILURE,
251 mutex_unlock(&rdev->devlist_mtx);
252 cfg80211_unlock_rdev(rdev);
256 static struct cfg80211_bss *cfg80211_get_conn_bss(struct wireless_dev *wdev)
258 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
259 struct cfg80211_bss *bss;
260 u16 capa = WLAN_CAPABILITY_ESS;
262 ASSERT_WDEV_LOCK(wdev);
264 if (wdev->conn->params.privacy)
265 capa |= WLAN_CAPABILITY_PRIVACY;
267 bss = cfg80211_get_bss(wdev->wiphy, wdev->conn->params.channel,
268 wdev->conn->params.bssid,
269 wdev->conn->params.ssid,
270 wdev->conn->params.ssid_len,
271 WLAN_CAPABILITY_ESS | WLAN_CAPABILITY_PRIVACY,
276 memcpy(wdev->conn->bssid, bss->bssid, ETH_ALEN);
277 wdev->conn->params.bssid = wdev->conn->bssid;
278 wdev->conn->params.channel = bss->channel;
279 wdev->conn->state = CFG80211_CONN_AUTHENTICATE_NEXT;
280 schedule_work(&rdev->conn_work);
285 static void __cfg80211_sme_scan_done(struct net_device *dev)
287 struct wireless_dev *wdev = dev->ieee80211_ptr;
288 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
289 struct cfg80211_bss *bss;
291 ASSERT_WDEV_LOCK(wdev);
293 if (wdev->sme_state != CFG80211_SME_CONNECTING)
299 if (wdev->conn->state != CFG80211_CONN_SCANNING &&
300 wdev->conn->state != CFG80211_CONN_SCAN_AGAIN)
303 bss = cfg80211_get_conn_bss(wdev);
305 cfg80211_put_bss(&rdev->wiphy, bss);
308 if (wdev->conn->state == CFG80211_CONN_SCAN_AGAIN)
309 schedule_work(&rdev->conn_work);
311 __cfg80211_connect_result(
313 wdev->conn->params.bssid,
315 WLAN_STATUS_UNSPECIFIED_FAILURE,
320 void cfg80211_sme_scan_done(struct net_device *dev)
322 struct wireless_dev *wdev = dev->ieee80211_ptr;
325 __cfg80211_sme_scan_done(dev);
329 void cfg80211_sme_rx_auth(struct net_device *dev,
330 const u8 *buf, size_t len)
332 struct wireless_dev *wdev = dev->ieee80211_ptr;
333 struct wiphy *wiphy = wdev->wiphy;
334 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
335 struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)buf;
336 u16 status_code = le16_to_cpu(mgmt->u.auth.status_code);
338 ASSERT_WDEV_LOCK(wdev);
340 /* should only RX auth frames when connecting */
341 if (wdev->sme_state != CFG80211_SME_CONNECTING)
344 if (WARN_ON(!wdev->conn))
347 if (status_code == WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG &&
348 wdev->conn->auto_auth &&
349 wdev->conn->params.auth_type != NL80211_AUTHTYPE_NETWORK_EAP) {
350 /* select automatically between only open, shared, leap */
351 switch (wdev->conn->params.auth_type) {
352 case NL80211_AUTHTYPE_OPEN_SYSTEM:
353 if (wdev->connect_keys)
354 wdev->conn->params.auth_type =
355 NL80211_AUTHTYPE_SHARED_KEY;
357 wdev->conn->params.auth_type =
358 NL80211_AUTHTYPE_NETWORK_EAP;
360 case NL80211_AUTHTYPE_SHARED_KEY:
361 wdev->conn->params.auth_type =
362 NL80211_AUTHTYPE_NETWORK_EAP;
366 wdev->conn->params.auth_type =
367 NL80211_AUTHTYPE_OPEN_SYSTEM;
370 wdev->conn->state = CFG80211_CONN_AUTHENTICATE_NEXT;
371 schedule_work(&rdev->conn_work);
372 } else if (status_code != WLAN_STATUS_SUCCESS) {
373 __cfg80211_connect_result(dev, mgmt->bssid, NULL, 0, NULL, 0,
374 status_code, false, NULL);
375 } else if (wdev->sme_state == CFG80211_SME_CONNECTING &&
376 wdev->conn->state == CFG80211_CONN_AUTHENTICATING) {
377 wdev->conn->state = CFG80211_CONN_ASSOCIATE_NEXT;
378 schedule_work(&rdev->conn_work);
382 bool cfg80211_sme_failed_reassoc(struct wireless_dev *wdev)
384 struct wiphy *wiphy = wdev->wiphy;
385 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
387 if (WARN_ON(!wdev->conn))
390 if (!wdev->conn->prev_bssid_valid)
394 * Some stupid APs don't accept reassoc, so we
395 * need to fall back to trying regular assoc.
397 wdev->conn->prev_bssid_valid = false;
398 wdev->conn->state = CFG80211_CONN_ASSOCIATE_NEXT;
399 schedule_work(&rdev->conn_work);
404 void cfg80211_sme_failed_assoc(struct wireless_dev *wdev)
406 struct wiphy *wiphy = wdev->wiphy;
407 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
409 wdev->conn->state = CFG80211_CONN_DEAUTH_ASSOC_FAIL;
410 schedule_work(&rdev->conn_work);
413 void __cfg80211_connect_result(struct net_device *dev, const u8 *bssid,
414 const u8 *req_ie, size_t req_ie_len,
415 const u8 *resp_ie, size_t resp_ie_len,
416 u16 status, bool wextev,
417 struct cfg80211_bss *bss)
419 struct wireless_dev *wdev = dev->ieee80211_ptr;
420 const u8 *country_ie;
421 #ifdef CONFIG_CFG80211_WEXT
422 union iwreq_data wrqu;
425 ASSERT_WDEV_LOCK(wdev);
427 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION &&
428 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT))
431 if (wdev->sme_state != CFG80211_SME_CONNECTING)
434 nl80211_send_connect_result(wiphy_to_dev(wdev->wiphy), dev,
435 bssid, req_ie, req_ie_len,
436 resp_ie, resp_ie_len,
439 #ifdef CONFIG_CFG80211_WEXT
441 if (req_ie && status == WLAN_STATUS_SUCCESS) {
442 memset(&wrqu, 0, sizeof(wrqu));
443 wrqu.data.length = req_ie_len;
444 wireless_send_event(dev, IWEVASSOCREQIE, &wrqu, req_ie);
447 if (resp_ie && status == WLAN_STATUS_SUCCESS) {
448 memset(&wrqu, 0, sizeof(wrqu));
449 wrqu.data.length = resp_ie_len;
450 wireless_send_event(dev, IWEVASSOCRESPIE, &wrqu, resp_ie);
453 memset(&wrqu, 0, sizeof(wrqu));
454 wrqu.ap_addr.sa_family = ARPHRD_ETHER;
455 if (bssid && status == WLAN_STATUS_SUCCESS) {
456 memcpy(wrqu.ap_addr.sa_data, bssid, ETH_ALEN);
457 memcpy(wdev->wext.prev_bssid, bssid, ETH_ALEN);
458 wdev->wext.prev_bssid_valid = true;
460 wireless_send_event(dev, SIOCGIWAP, &wrqu, NULL);
464 if (wdev->current_bss) {
465 cfg80211_unhold_bss(wdev->current_bss);
466 cfg80211_put_bss(wdev->wiphy, &wdev->current_bss->pub);
467 wdev->current_bss = NULL;
471 wdev->conn->state = CFG80211_CONN_IDLE;
473 if (status != WLAN_STATUS_SUCCESS) {
474 wdev->sme_state = CFG80211_SME_IDLE;
476 kfree(wdev->conn->ie);
479 kfree(wdev->connect_keys);
480 wdev->connect_keys = NULL;
482 cfg80211_put_bss(wdev->wiphy, bss);
487 bss = cfg80211_get_bss(wdev->wiphy,
488 wdev->conn ? wdev->conn->params.channel :
491 wdev->ssid, wdev->ssid_len,
493 WLAN_CAPABILITY_ESS);
498 cfg80211_hold_bss(bss_from_pub(bss));
499 wdev->current_bss = bss_from_pub(bss);
501 wdev->sme_state = CFG80211_SME_CONNECTED;
502 cfg80211_upload_connect_keys(wdev);
505 country_ie = ieee80211_bss_get_ie(bss, WLAN_EID_COUNTRY);
511 country_ie = kmemdup(country_ie, 2 + country_ie[1], GFP_ATOMIC);
518 * ieee80211_bss_get_ie() ensures we can access:
519 * - country_ie + 2, the start of the country ie data, and
520 * - and country_ie[1] which is the IE length
522 regulatory_hint_11d(wdev->wiphy, bss->channel->band,
523 country_ie + 2, country_ie[1]);
527 void cfg80211_connect_result(struct net_device *dev, const u8 *bssid,
528 const u8 *req_ie, size_t req_ie_len,
529 const u8 *resp_ie, size_t resp_ie_len,
530 u16 status, gfp_t gfp)
532 struct wireless_dev *wdev = dev->ieee80211_ptr;
533 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
534 struct cfg80211_event *ev;
537 CFG80211_DEV_WARN_ON(wdev->sme_state != CFG80211_SME_CONNECTING);
539 ev = kzalloc(sizeof(*ev) + req_ie_len + resp_ie_len, gfp);
543 ev->type = EVENT_CONNECT_RESULT;
545 memcpy(ev->cr.bssid, bssid, ETH_ALEN);
547 ev->cr.req_ie = ((u8 *)ev) + sizeof(*ev);
548 ev->cr.req_ie_len = req_ie_len;
549 memcpy((void *)ev->cr.req_ie, req_ie, req_ie_len);
552 ev->cr.resp_ie = ((u8 *)ev) + sizeof(*ev) + req_ie_len;
553 ev->cr.resp_ie_len = resp_ie_len;
554 memcpy((void *)ev->cr.resp_ie, resp_ie, resp_ie_len);
556 ev->cr.status = status;
558 spin_lock_irqsave(&wdev->event_lock, flags);
559 list_add_tail(&ev->list, &wdev->event_list);
560 spin_unlock_irqrestore(&wdev->event_lock, flags);
561 queue_work(cfg80211_wq, &rdev->event_work);
563 EXPORT_SYMBOL(cfg80211_connect_result);
565 void __cfg80211_roamed(struct wireless_dev *wdev,
566 struct cfg80211_bss *bss,
567 const u8 *req_ie, size_t req_ie_len,
568 const u8 *resp_ie, size_t resp_ie_len)
570 #ifdef CONFIG_CFG80211_WEXT
571 union iwreq_data wrqu;
573 ASSERT_WDEV_LOCK(wdev);
575 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION &&
576 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT))
579 if (wdev->sme_state != CFG80211_SME_CONNECTED)
582 /* internal error -- how did we get to CONNECTED w/o BSS? */
583 if (WARN_ON(!wdev->current_bss)) {
587 cfg80211_unhold_bss(wdev->current_bss);
588 cfg80211_put_bss(wdev->wiphy, &wdev->current_bss->pub);
589 wdev->current_bss = NULL;
591 cfg80211_hold_bss(bss_from_pub(bss));
592 wdev->current_bss = bss_from_pub(bss);
594 nl80211_send_roamed(wiphy_to_dev(wdev->wiphy), wdev->netdev, bss->bssid,
595 req_ie, req_ie_len, resp_ie, resp_ie_len,
598 #ifdef CONFIG_CFG80211_WEXT
600 memset(&wrqu, 0, sizeof(wrqu));
601 wrqu.data.length = req_ie_len;
602 wireless_send_event(wdev->netdev, IWEVASSOCREQIE,
607 memset(&wrqu, 0, sizeof(wrqu));
608 wrqu.data.length = resp_ie_len;
609 wireless_send_event(wdev->netdev, IWEVASSOCRESPIE,
613 memset(&wrqu, 0, sizeof(wrqu));
614 wrqu.ap_addr.sa_family = ARPHRD_ETHER;
615 memcpy(wrqu.ap_addr.sa_data, bss->bssid, ETH_ALEN);
616 memcpy(wdev->wext.prev_bssid, bss->bssid, ETH_ALEN);
617 wdev->wext.prev_bssid_valid = true;
618 wireless_send_event(wdev->netdev, SIOCGIWAP, &wrqu, NULL);
623 cfg80211_put_bss(wdev->wiphy, bss);
626 void cfg80211_roamed(struct net_device *dev,
627 struct ieee80211_channel *channel,
629 const u8 *req_ie, size_t req_ie_len,
630 const u8 *resp_ie, size_t resp_ie_len, gfp_t gfp)
632 struct wireless_dev *wdev = dev->ieee80211_ptr;
633 struct cfg80211_bss *bss;
635 CFG80211_DEV_WARN_ON(wdev->sme_state != CFG80211_SME_CONNECTED);
637 bss = cfg80211_get_bss(wdev->wiphy, channel, bssid, wdev->ssid,
638 wdev->ssid_len, WLAN_CAPABILITY_ESS,
639 WLAN_CAPABILITY_ESS);
643 cfg80211_roamed_bss(dev, bss, req_ie, req_ie_len, resp_ie,
646 EXPORT_SYMBOL(cfg80211_roamed);
648 void cfg80211_roamed_bss(struct net_device *dev,
649 struct cfg80211_bss *bss, const u8 *req_ie,
650 size_t req_ie_len, const u8 *resp_ie,
651 size_t resp_ie_len, gfp_t gfp)
653 struct wireless_dev *wdev = dev->ieee80211_ptr;
654 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
655 struct cfg80211_event *ev;
658 CFG80211_DEV_WARN_ON(wdev->sme_state != CFG80211_SME_CONNECTED);
663 ev = kzalloc(sizeof(*ev) + req_ie_len + resp_ie_len, gfp);
665 cfg80211_put_bss(wdev->wiphy, bss);
669 ev->type = EVENT_ROAMED;
670 ev->rm.req_ie = ((u8 *)ev) + sizeof(*ev);
671 ev->rm.req_ie_len = req_ie_len;
672 memcpy((void *)ev->rm.req_ie, req_ie, req_ie_len);
673 ev->rm.resp_ie = ((u8 *)ev) + sizeof(*ev) + req_ie_len;
674 ev->rm.resp_ie_len = resp_ie_len;
675 memcpy((void *)ev->rm.resp_ie, resp_ie, resp_ie_len);
678 spin_lock_irqsave(&wdev->event_lock, flags);
679 list_add_tail(&ev->list, &wdev->event_list);
680 spin_unlock_irqrestore(&wdev->event_lock, flags);
681 queue_work(cfg80211_wq, &rdev->event_work);
683 EXPORT_SYMBOL(cfg80211_roamed_bss);
685 void __cfg80211_disconnected(struct net_device *dev, const u8 *ie,
686 size_t ie_len, u16 reason, bool from_ap)
688 struct wireless_dev *wdev = dev->ieee80211_ptr;
689 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
691 #ifdef CONFIG_CFG80211_WEXT
692 union iwreq_data wrqu;
695 ASSERT_WDEV_LOCK(wdev);
697 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION &&
698 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT))
701 if (wdev->sme_state != CFG80211_SME_CONNECTED)
704 if (wdev->current_bss) {
705 cfg80211_unhold_bss(wdev->current_bss);
706 cfg80211_put_bss(wdev->wiphy, &wdev->current_bss->pub);
709 wdev->current_bss = NULL;
710 wdev->sme_state = CFG80211_SME_IDLE;
714 kfree(wdev->conn->ie);
715 wdev->conn->ie = NULL;
720 nl80211_send_disconnected(rdev, dev, reason, ie, ie_len, from_ap);
723 * Delete all the keys ... pairwise keys can't really
724 * exist any more anyway, but default keys might.
726 if (rdev->ops->del_key)
727 for (i = 0; i < 6; i++)
728 rdev_del_key(rdev, dev, i, false, NULL);
730 #ifdef CONFIG_CFG80211_WEXT
731 memset(&wrqu, 0, sizeof(wrqu));
732 wrqu.ap_addr.sa_family = ARPHRD_ETHER;
733 wireless_send_event(dev, SIOCGIWAP, &wrqu, NULL);
734 wdev->wext.connect.ssid_len = 0;
737 schedule_work(&cfg80211_disconnect_work);
740 void cfg80211_disconnected(struct net_device *dev, u16 reason,
741 u8 *ie, size_t ie_len, gfp_t gfp)
743 struct wireless_dev *wdev = dev->ieee80211_ptr;
744 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
745 struct cfg80211_event *ev;
748 CFG80211_DEV_WARN_ON(wdev->sme_state != CFG80211_SME_CONNECTED);
750 ev = kzalloc(sizeof(*ev) + ie_len, gfp);
754 ev->type = EVENT_DISCONNECTED;
755 ev->dc.ie = ((u8 *)ev) + sizeof(*ev);
756 ev->dc.ie_len = ie_len;
757 memcpy((void *)ev->dc.ie, ie, ie_len);
758 ev->dc.reason = reason;
760 spin_lock_irqsave(&wdev->event_lock, flags);
761 list_add_tail(&ev->list, &wdev->event_list);
762 spin_unlock_irqrestore(&wdev->event_lock, flags);
763 queue_work(cfg80211_wq, &rdev->event_work);
765 EXPORT_SYMBOL(cfg80211_disconnected);
767 int __cfg80211_connect(struct cfg80211_registered_device *rdev,
768 struct net_device *dev,
769 struct cfg80211_connect_params *connect,
770 struct cfg80211_cached_keys *connkeys,
771 const u8 *prev_bssid)
773 struct wireless_dev *wdev = dev->ieee80211_ptr;
774 struct cfg80211_bss *bss = NULL;
777 ASSERT_WDEV_LOCK(wdev);
779 if (wdev->sme_state != CFG80211_SME_IDLE)
782 if (WARN_ON(wdev->connect_keys)) {
783 kfree(wdev->connect_keys);
784 wdev->connect_keys = NULL;
787 cfg80211_oper_and_ht_capa(&connect->ht_capa_mask,
788 rdev->wiphy.ht_capa_mod_mask);
790 if (connkeys && connkeys->def >= 0) {
795 cipher = connkeys->params[idx].cipher;
796 /* If given a WEP key we may need it for shared key auth */
797 if (cipher == WLAN_CIPHER_SUITE_WEP40 ||
798 cipher == WLAN_CIPHER_SUITE_WEP104) {
799 connect->key_idx = idx;
800 connect->key = connkeys->params[idx].key;
801 connect->key_len = connkeys->params[idx].key_len;
804 * If ciphers are not set (e.g. when going through
805 * iwconfig), we have to set them appropriately here.
807 if (connect->crypto.cipher_group == 0)
808 connect->crypto.cipher_group = cipher;
810 if (connect->crypto.n_ciphers_pairwise == 0) {
811 connect->crypto.n_ciphers_pairwise = 1;
812 connect->crypto.ciphers_pairwise[0] = cipher;
817 if (!rdev->ops->connect) {
818 if (!rdev->ops->auth || !rdev->ops->assoc)
821 if (WARN_ON(wdev->conn))
824 wdev->conn = kzalloc(sizeof(*wdev->conn), GFP_KERNEL);
829 * Copy all parameters, and treat explicitly IEs, BSSID, SSID.
831 memcpy(&wdev->conn->params, connect, sizeof(*connect));
832 if (connect->bssid) {
833 wdev->conn->params.bssid = wdev->conn->bssid;
834 memcpy(wdev->conn->bssid, connect->bssid, ETH_ALEN);
838 wdev->conn->ie = kmemdup(connect->ie, connect->ie_len,
840 wdev->conn->params.ie = wdev->conn->ie;
841 if (!wdev->conn->ie) {
848 if (connect->auth_type == NL80211_AUTHTYPE_AUTOMATIC) {
849 wdev->conn->auto_auth = true;
850 /* start with open system ... should mostly work */
851 wdev->conn->params.auth_type =
852 NL80211_AUTHTYPE_OPEN_SYSTEM;
854 wdev->conn->auto_auth = false;
857 memcpy(wdev->ssid, connect->ssid, connect->ssid_len);
858 wdev->ssid_len = connect->ssid_len;
859 wdev->conn->params.ssid = wdev->ssid;
860 wdev->conn->params.ssid_len = connect->ssid_len;
862 /* see if we have the bss already */
863 bss = cfg80211_get_conn_bss(wdev);
865 wdev->sme_state = CFG80211_SME_CONNECTING;
866 wdev->connect_keys = connkeys;
869 memcpy(wdev->conn->prev_bssid, prev_bssid, ETH_ALEN);
870 wdev->conn->prev_bssid_valid = true;
873 /* we're good if we have a matching bss struct */
875 wdev->conn->state = CFG80211_CONN_AUTHENTICATE_NEXT;
876 err = cfg80211_conn_do_work(wdev);
877 cfg80211_put_bss(wdev->wiphy, bss);
879 /* otherwise we'll need to scan for the AP first */
880 err = cfg80211_conn_scan(wdev);
882 * If we can't scan right now, then we need to scan again
883 * after the current scan finished, since the parameters
884 * changed (unless we find a good AP anyway).
888 wdev->conn->state = CFG80211_CONN_SCAN_AGAIN;
892 kfree(wdev->conn->ie);
895 wdev->sme_state = CFG80211_SME_IDLE;
896 wdev->connect_keys = NULL;
902 wdev->sme_state = CFG80211_SME_CONNECTING;
903 wdev->connect_keys = connkeys;
904 err = rdev_connect(rdev, dev, connect);
906 wdev->connect_keys = NULL;
907 wdev->sme_state = CFG80211_SME_IDLE;
911 memcpy(wdev->ssid, connect->ssid, connect->ssid_len);
912 wdev->ssid_len = connect->ssid_len;
918 int cfg80211_connect(struct cfg80211_registered_device *rdev,
919 struct net_device *dev,
920 struct cfg80211_connect_params *connect,
921 struct cfg80211_cached_keys *connkeys)
925 mutex_lock(&rdev->devlist_mtx);
926 /* might request scan - scan_mtx -> wdev_mtx dependency */
927 mutex_lock(&rdev->sched_scan_mtx);
928 wdev_lock(dev->ieee80211_ptr);
929 err = __cfg80211_connect(rdev, dev, connect, connkeys, NULL);
930 wdev_unlock(dev->ieee80211_ptr);
931 mutex_unlock(&rdev->sched_scan_mtx);
932 mutex_unlock(&rdev->devlist_mtx);
937 int __cfg80211_disconnect(struct cfg80211_registered_device *rdev,
938 struct net_device *dev, u16 reason, bool wextev)
940 struct wireless_dev *wdev = dev->ieee80211_ptr;
943 ASSERT_WDEV_LOCK(wdev);
945 if (wdev->sme_state == CFG80211_SME_IDLE)
948 kfree(wdev->connect_keys);
949 wdev->connect_keys = NULL;
951 if (!rdev->ops->disconnect) {
952 if (!rdev->ops->deauth)
955 /* was it connected by userspace SME? */
957 cfg80211_mlme_down(rdev, dev);
961 if (wdev->sme_state == CFG80211_SME_CONNECTING &&
962 (wdev->conn->state == CFG80211_CONN_SCANNING ||
963 wdev->conn->state == CFG80211_CONN_SCAN_AGAIN)) {
964 wdev->sme_state = CFG80211_SME_IDLE;
965 kfree(wdev->conn->ie);
972 /* wdev->conn->params.bssid must be set if > SCANNING */
973 err = __cfg80211_mlme_deauth(rdev, dev,
974 wdev->conn->params.bssid,
975 NULL, 0, reason, false);
979 err = rdev_disconnect(rdev, dev, reason);
984 if (wdev->sme_state == CFG80211_SME_CONNECTED)
985 __cfg80211_disconnected(dev, NULL, 0, 0, false);
986 else if (wdev->sme_state == CFG80211_SME_CONNECTING)
987 __cfg80211_connect_result(dev, NULL, NULL, 0, NULL, 0,
988 WLAN_STATUS_UNSPECIFIED_FAILURE,
994 int cfg80211_disconnect(struct cfg80211_registered_device *rdev,
995 struct net_device *dev,
996 u16 reason, bool wextev)
1000 wdev_lock(dev->ieee80211_ptr);
1001 err = __cfg80211_disconnect(rdev, dev, reason, wextev);
1002 wdev_unlock(dev->ieee80211_ptr);
1007 void cfg80211_sme_disassoc(struct net_device *dev,
1008 struct cfg80211_internal_bss *bss)
1010 struct wireless_dev *wdev = dev->ieee80211_ptr;
1011 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
1014 ASSERT_WDEV_LOCK(wdev);
1019 if (wdev->conn->state == CFG80211_CONN_IDLE)
1023 * Ok, so the association was made by this SME -- we don't
1024 * want it any more so deauthenticate too.
1027 memcpy(bssid, bss->pub.bssid, ETH_ALEN);
1029 __cfg80211_mlme_deauth(rdev, dev, bssid, NULL, 0,
1030 WLAN_REASON_DEAUTH_LEAVING, false);