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/workqueue.h>
11 #include <linux/wireless.h>
12 #include <net/iw_handler.h>
13 #include <net/cfg80211.h>
14 #include <net/rtnetlink.h>
18 struct cfg80211_conn {
19 struct cfg80211_connect_params params;
20 /* these are sub-states of the _CONNECTING sme_state */
23 CFG80211_CONN_SCANNING,
24 CFG80211_CONN_SCAN_AGAIN,
25 CFG80211_CONN_AUTHENTICATE_NEXT,
26 CFG80211_CONN_AUTHENTICATING,
27 CFG80211_CONN_ASSOCIATE_NEXT,
28 CFG80211_CONN_ASSOCIATING,
29 CFG80211_CONN_DEAUTH_ASSOC_FAIL,
31 u8 bssid[ETH_ALEN], prev_bssid[ETH_ALEN];
34 bool auto_auth, prev_bssid_valid;
37 bool cfg80211_is_all_idle(void)
39 struct cfg80211_registered_device *rdev;
40 struct wireless_dev *wdev;
41 bool is_all_idle = true;
43 mutex_lock(&cfg80211_mutex);
46 * All devices must be idle as otherwise if you are actively
47 * scanning some new beacon hints could be learned and would
48 * count as new regulatory hints.
50 list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
51 cfg80211_lock_rdev(rdev);
52 list_for_each_entry(wdev, &rdev->netdev_list, list) {
54 if (wdev->sme_state != CFG80211_SME_IDLE)
58 cfg80211_unlock_rdev(rdev);
61 mutex_unlock(&cfg80211_mutex);
66 static void disconnect_work(struct work_struct *work)
68 if (!cfg80211_is_all_idle())
71 regulatory_hint_disconnect();
74 static DECLARE_WORK(cfg80211_disconnect_work, disconnect_work);
76 static int cfg80211_conn_scan(struct wireless_dev *wdev)
78 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
79 struct cfg80211_scan_request *request;
83 ASSERT_RDEV_LOCK(rdev);
84 ASSERT_WDEV_LOCK(wdev);
89 if (wdev->conn->params.channel) {
92 enum ieee80211_band band;
95 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
96 if (!wdev->wiphy->bands[band])
98 n_channels += wdev->wiphy->bands[band]->n_channels;
101 request = kzalloc(sizeof(*request) + sizeof(request->ssids[0]) +
102 sizeof(request->channels[0]) * n_channels,
107 if (wdev->conn->params.channel)
108 request->channels[0] = wdev->conn->params.channel;
111 enum ieee80211_band band;
113 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
114 if (!wdev->wiphy->bands[band])
116 for (j = 0; j < wdev->wiphy->bands[band]->n_channels;
118 request->channels[i] =
119 &wdev->wiphy->bands[band]->channels[j];
122 request->n_channels = n_channels;
123 request->ssids = (void *)&request->channels[n_channels];
124 request->n_ssids = 1;
126 memcpy(request->ssids[0].ssid, wdev->conn->params.ssid,
127 wdev->conn->params.ssid_len);
128 request->ssids[0].ssid_len = wdev->conn->params.ssid_len;
130 request->dev = wdev->netdev;
131 request->wiphy = &rdev->wiphy;
133 rdev->scan_req = request;
135 err = rdev->ops->scan(wdev->wiphy, wdev->netdev, request);
137 wdev->conn->state = CFG80211_CONN_SCANNING;
138 nl80211_send_scan_start(rdev, wdev->netdev);
139 dev_hold(wdev->netdev);
141 rdev->scan_req = NULL;
147 static int cfg80211_conn_do_work(struct wireless_dev *wdev)
149 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
150 struct cfg80211_connect_params *params;
151 const u8 *prev_bssid = NULL;
154 ASSERT_WDEV_LOCK(wdev);
159 params = &wdev->conn->params;
161 switch (wdev->conn->state) {
162 case CFG80211_CONN_SCAN_AGAIN:
163 return cfg80211_conn_scan(wdev);
164 case CFG80211_CONN_AUTHENTICATE_NEXT:
165 BUG_ON(!rdev->ops->auth);
166 wdev->conn->state = CFG80211_CONN_AUTHENTICATING;
167 return __cfg80211_mlme_auth(rdev, wdev->netdev,
168 params->channel, params->auth_type,
170 params->ssid, params->ssid_len,
172 params->key, params->key_len,
174 case CFG80211_CONN_ASSOCIATE_NEXT:
175 BUG_ON(!rdev->ops->assoc);
176 wdev->conn->state = CFG80211_CONN_ASSOCIATING;
177 if (wdev->conn->prev_bssid_valid)
178 prev_bssid = wdev->conn->prev_bssid;
179 err = __cfg80211_mlme_assoc(rdev, wdev->netdev,
180 params->channel, params->bssid,
182 params->ssid, params->ssid_len,
183 params->ie, params->ie_len,
184 false, ¶ms->crypto);
186 __cfg80211_mlme_deauth(rdev, wdev->netdev, params->bssid,
188 WLAN_REASON_DEAUTH_LEAVING);
190 case CFG80211_CONN_DEAUTH_ASSOC_FAIL:
191 __cfg80211_mlme_deauth(rdev, wdev->netdev, params->bssid,
193 WLAN_REASON_DEAUTH_LEAVING);
194 /* return an error so that we call __cfg80211_connect_result() */
201 void cfg80211_conn_work(struct work_struct *work)
203 struct cfg80211_registered_device *rdev =
204 container_of(work, struct cfg80211_registered_device, conn_work);
205 struct wireless_dev *wdev;
206 u8 bssid_buf[ETH_ALEN], *bssid = NULL;
209 cfg80211_lock_rdev(rdev);
210 mutex_lock(&rdev->devlist_mtx);
212 list_for_each_entry(wdev, &rdev->netdev_list, list) {
214 if (!netif_running(wdev->netdev)) {
218 if (wdev->sme_state != CFG80211_SME_CONNECTING) {
222 if (wdev->conn->params.bssid) {
223 memcpy(bssid_buf, wdev->conn->params.bssid, ETH_ALEN);
226 if (cfg80211_conn_do_work(wdev))
227 __cfg80211_connect_result(
230 WLAN_STATUS_UNSPECIFIED_FAILURE,
235 mutex_unlock(&rdev->devlist_mtx);
236 cfg80211_unlock_rdev(rdev);
240 static struct cfg80211_bss *cfg80211_get_conn_bss(struct wireless_dev *wdev)
242 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
243 struct cfg80211_bss *bss;
244 u16 capa = WLAN_CAPABILITY_ESS;
246 ASSERT_WDEV_LOCK(wdev);
248 if (wdev->conn->params.privacy)
249 capa |= WLAN_CAPABILITY_PRIVACY;
251 bss = cfg80211_get_bss(wdev->wiphy, NULL, wdev->conn->params.bssid,
252 wdev->conn->params.ssid,
253 wdev->conn->params.ssid_len,
254 WLAN_CAPABILITY_ESS | WLAN_CAPABILITY_PRIVACY,
259 memcpy(wdev->conn->bssid, bss->bssid, ETH_ALEN);
260 wdev->conn->params.bssid = wdev->conn->bssid;
261 wdev->conn->params.channel = bss->channel;
262 wdev->conn->state = CFG80211_CONN_AUTHENTICATE_NEXT;
263 schedule_work(&rdev->conn_work);
268 static void __cfg80211_sme_scan_done(struct net_device *dev)
270 struct wireless_dev *wdev = dev->ieee80211_ptr;
271 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
272 struct cfg80211_bss *bss;
274 ASSERT_WDEV_LOCK(wdev);
276 if (wdev->sme_state != CFG80211_SME_CONNECTING)
282 if (wdev->conn->state != CFG80211_CONN_SCANNING &&
283 wdev->conn->state != CFG80211_CONN_SCAN_AGAIN)
286 bss = cfg80211_get_conn_bss(wdev);
288 cfg80211_put_bss(bss);
291 if (wdev->conn->state == CFG80211_CONN_SCAN_AGAIN)
292 schedule_work(&rdev->conn_work);
294 __cfg80211_connect_result(
296 wdev->conn->params.bssid,
298 WLAN_STATUS_UNSPECIFIED_FAILURE,
303 void cfg80211_sme_scan_done(struct net_device *dev)
305 struct wireless_dev *wdev = dev->ieee80211_ptr;
307 mutex_lock(&wiphy_to_dev(wdev->wiphy)->devlist_mtx);
309 __cfg80211_sme_scan_done(dev);
311 mutex_unlock(&wiphy_to_dev(wdev->wiphy)->devlist_mtx);
314 void cfg80211_sme_rx_auth(struct net_device *dev,
315 const u8 *buf, size_t len)
317 struct wireless_dev *wdev = dev->ieee80211_ptr;
318 struct wiphy *wiphy = wdev->wiphy;
319 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
320 struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)buf;
321 u16 status_code = le16_to_cpu(mgmt->u.auth.status_code);
323 ASSERT_WDEV_LOCK(wdev);
325 /* should only RX auth frames when connecting */
326 if (wdev->sme_state != CFG80211_SME_CONNECTING)
329 if (WARN_ON(!wdev->conn))
332 if (status_code == WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG &&
333 wdev->conn->auto_auth &&
334 wdev->conn->params.auth_type != NL80211_AUTHTYPE_NETWORK_EAP) {
335 /* select automatically between only open, shared, leap */
336 switch (wdev->conn->params.auth_type) {
337 case NL80211_AUTHTYPE_OPEN_SYSTEM:
338 if (wdev->connect_keys)
339 wdev->conn->params.auth_type =
340 NL80211_AUTHTYPE_SHARED_KEY;
342 wdev->conn->params.auth_type =
343 NL80211_AUTHTYPE_NETWORK_EAP;
345 case NL80211_AUTHTYPE_SHARED_KEY:
346 wdev->conn->params.auth_type =
347 NL80211_AUTHTYPE_NETWORK_EAP;
351 wdev->conn->params.auth_type =
352 NL80211_AUTHTYPE_OPEN_SYSTEM;
355 wdev->conn->state = CFG80211_CONN_AUTHENTICATE_NEXT;
356 schedule_work(&rdev->conn_work);
357 } else if (status_code != WLAN_STATUS_SUCCESS) {
358 __cfg80211_connect_result(dev, mgmt->bssid, NULL, 0, NULL, 0,
359 status_code, false, NULL);
360 } else if (wdev->sme_state == CFG80211_SME_CONNECTING &&
361 wdev->conn->state == CFG80211_CONN_AUTHENTICATING) {
362 wdev->conn->state = CFG80211_CONN_ASSOCIATE_NEXT;
363 schedule_work(&rdev->conn_work);
367 bool cfg80211_sme_failed_reassoc(struct wireless_dev *wdev)
369 struct wiphy *wiphy = wdev->wiphy;
370 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
372 if (WARN_ON(!wdev->conn))
375 if (!wdev->conn->prev_bssid_valid)
379 * Some stupid APs don't accept reassoc, so we
380 * need to fall back to trying regular assoc.
382 wdev->conn->prev_bssid_valid = false;
383 wdev->conn->state = CFG80211_CONN_ASSOCIATE_NEXT;
384 schedule_work(&rdev->conn_work);
389 void cfg80211_sme_failed_assoc(struct wireless_dev *wdev)
391 struct wiphy *wiphy = wdev->wiphy;
392 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
394 wdev->conn->state = CFG80211_CONN_DEAUTH_ASSOC_FAIL;
395 schedule_work(&rdev->conn_work);
398 void __cfg80211_connect_result(struct net_device *dev, const u8 *bssid,
399 const u8 *req_ie, size_t req_ie_len,
400 const u8 *resp_ie, size_t resp_ie_len,
401 u16 status, bool wextev,
402 struct cfg80211_bss *bss)
404 struct wireless_dev *wdev = dev->ieee80211_ptr;
406 #ifdef CONFIG_CFG80211_WEXT
407 union iwreq_data wrqu;
410 ASSERT_WDEV_LOCK(wdev);
412 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION))
415 if (wdev->sme_state != CFG80211_SME_CONNECTING)
418 nl80211_send_connect_result(wiphy_to_dev(wdev->wiphy), dev,
419 bssid, req_ie, req_ie_len,
420 resp_ie, resp_ie_len,
423 #ifdef CONFIG_CFG80211_WEXT
425 if (req_ie && status == WLAN_STATUS_SUCCESS) {
426 memset(&wrqu, 0, sizeof(wrqu));
427 wrqu.data.length = req_ie_len;
428 wireless_send_event(dev, IWEVASSOCREQIE, &wrqu, req_ie);
431 if (resp_ie && status == WLAN_STATUS_SUCCESS) {
432 memset(&wrqu, 0, sizeof(wrqu));
433 wrqu.data.length = resp_ie_len;
434 wireless_send_event(dev, IWEVASSOCRESPIE, &wrqu, resp_ie);
437 memset(&wrqu, 0, sizeof(wrqu));
438 wrqu.ap_addr.sa_family = ARPHRD_ETHER;
439 if (bssid && status == WLAN_STATUS_SUCCESS) {
440 memcpy(wrqu.ap_addr.sa_data, bssid, ETH_ALEN);
441 memcpy(wdev->wext.prev_bssid, bssid, ETH_ALEN);
442 wdev->wext.prev_bssid_valid = true;
444 wireless_send_event(dev, SIOCGIWAP, &wrqu, NULL);
448 if (wdev->current_bss) {
449 cfg80211_unhold_bss(wdev->current_bss);
450 cfg80211_put_bss(&wdev->current_bss->pub);
451 wdev->current_bss = NULL;
455 wdev->conn->state = CFG80211_CONN_IDLE;
457 if (status != WLAN_STATUS_SUCCESS) {
458 wdev->sme_state = CFG80211_SME_IDLE;
460 kfree(wdev->conn->ie);
463 kfree(wdev->connect_keys);
464 wdev->connect_keys = NULL;
470 bss = cfg80211_get_bss(wdev->wiphy, NULL, bssid,
471 wdev->ssid, wdev->ssid_len,
473 WLAN_CAPABILITY_ESS);
478 cfg80211_hold_bss(bss_from_pub(bss));
479 wdev->current_bss = bss_from_pub(bss);
481 wdev->sme_state = CFG80211_SME_CONNECTED;
482 cfg80211_upload_connect_keys(wdev);
484 country_ie = (u8 *) ieee80211_bss_get_ie(bss, WLAN_EID_COUNTRY);
490 * ieee80211_bss_get_ie() ensures we can access:
491 * - country_ie + 2, the start of the country ie data, and
492 * - and country_ie[1] which is the IE length
494 regulatory_hint_11d(wdev->wiphy,
500 void cfg80211_connect_result(struct net_device *dev, const u8 *bssid,
501 const u8 *req_ie, size_t req_ie_len,
502 const u8 *resp_ie, size_t resp_ie_len,
503 u16 status, gfp_t gfp)
505 struct wireless_dev *wdev = dev->ieee80211_ptr;
506 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
507 struct cfg80211_event *ev;
510 CFG80211_DEV_WARN_ON(wdev->sme_state != CFG80211_SME_CONNECTING);
512 ev = kzalloc(sizeof(*ev) + req_ie_len + resp_ie_len, gfp);
516 ev->type = EVENT_CONNECT_RESULT;
518 memcpy(ev->cr.bssid, bssid, ETH_ALEN);
519 ev->cr.req_ie = ((u8 *)ev) + sizeof(*ev);
520 ev->cr.req_ie_len = req_ie_len;
521 memcpy((void *)ev->cr.req_ie, req_ie, req_ie_len);
522 ev->cr.resp_ie = ((u8 *)ev) + sizeof(*ev) + req_ie_len;
523 ev->cr.resp_ie_len = resp_ie_len;
524 memcpy((void *)ev->cr.resp_ie, resp_ie, resp_ie_len);
525 ev->cr.status = status;
527 spin_lock_irqsave(&wdev->event_lock, flags);
528 list_add_tail(&ev->list, &wdev->event_list);
529 spin_unlock_irqrestore(&wdev->event_lock, flags);
530 queue_work(cfg80211_wq, &rdev->event_work);
532 EXPORT_SYMBOL(cfg80211_connect_result);
534 void __cfg80211_roamed(struct wireless_dev *wdev, const u8 *bssid,
535 const u8 *req_ie, size_t req_ie_len,
536 const u8 *resp_ie, size_t resp_ie_len)
538 struct cfg80211_bss *bss;
539 #ifdef CONFIG_CFG80211_WEXT
540 union iwreq_data wrqu;
543 ASSERT_WDEV_LOCK(wdev);
545 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION))
548 if (wdev->sme_state != CFG80211_SME_CONNECTED)
551 /* internal error -- how did we get to CONNECTED w/o BSS? */
552 if (WARN_ON(!wdev->current_bss)) {
556 cfg80211_unhold_bss(wdev->current_bss);
557 cfg80211_put_bss(&wdev->current_bss->pub);
558 wdev->current_bss = NULL;
560 bss = cfg80211_get_bss(wdev->wiphy, NULL, bssid,
561 wdev->ssid, wdev->ssid_len,
562 WLAN_CAPABILITY_ESS, WLAN_CAPABILITY_ESS);
567 cfg80211_hold_bss(bss_from_pub(bss));
568 wdev->current_bss = bss_from_pub(bss);
570 nl80211_send_roamed(wiphy_to_dev(wdev->wiphy), wdev->netdev, bssid,
571 req_ie, req_ie_len, resp_ie, resp_ie_len,
574 #ifdef CONFIG_CFG80211_WEXT
576 memset(&wrqu, 0, sizeof(wrqu));
577 wrqu.data.length = req_ie_len;
578 wireless_send_event(wdev->netdev, IWEVASSOCREQIE,
583 memset(&wrqu, 0, sizeof(wrqu));
584 wrqu.data.length = resp_ie_len;
585 wireless_send_event(wdev->netdev, IWEVASSOCRESPIE,
589 memset(&wrqu, 0, sizeof(wrqu));
590 wrqu.ap_addr.sa_family = ARPHRD_ETHER;
591 memcpy(wrqu.ap_addr.sa_data, bssid, ETH_ALEN);
592 memcpy(wdev->wext.prev_bssid, bssid, ETH_ALEN);
593 wdev->wext.prev_bssid_valid = true;
594 wireless_send_event(wdev->netdev, SIOCGIWAP, &wrqu, NULL);
598 void cfg80211_roamed(struct net_device *dev, const u8 *bssid,
599 const u8 *req_ie, size_t req_ie_len,
600 const u8 *resp_ie, size_t resp_ie_len, gfp_t gfp)
602 struct wireless_dev *wdev = dev->ieee80211_ptr;
603 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
604 struct cfg80211_event *ev;
607 CFG80211_DEV_WARN_ON(wdev->sme_state != CFG80211_SME_CONNECTED);
609 ev = kzalloc(sizeof(*ev) + req_ie_len + resp_ie_len, gfp);
613 ev->type = EVENT_ROAMED;
614 memcpy(ev->rm.bssid, bssid, ETH_ALEN);
615 ev->rm.req_ie = ((u8 *)ev) + sizeof(*ev);
616 ev->rm.req_ie_len = req_ie_len;
617 memcpy((void *)ev->rm.req_ie, req_ie, req_ie_len);
618 ev->rm.resp_ie = ((u8 *)ev) + sizeof(*ev) + req_ie_len;
619 ev->rm.resp_ie_len = resp_ie_len;
620 memcpy((void *)ev->rm.resp_ie, resp_ie, resp_ie_len);
622 spin_lock_irqsave(&wdev->event_lock, flags);
623 list_add_tail(&ev->list, &wdev->event_list);
624 spin_unlock_irqrestore(&wdev->event_lock, flags);
625 queue_work(cfg80211_wq, &rdev->event_work);
627 EXPORT_SYMBOL(cfg80211_roamed);
629 void __cfg80211_disconnected(struct net_device *dev, const u8 *ie,
630 size_t ie_len, u16 reason, bool from_ap)
632 struct wireless_dev *wdev = dev->ieee80211_ptr;
633 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
635 #ifdef CONFIG_CFG80211_WEXT
636 union iwreq_data wrqu;
639 ASSERT_WDEV_LOCK(wdev);
641 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION))
644 if (wdev->sme_state != CFG80211_SME_CONNECTED)
647 if (wdev->current_bss) {
648 cfg80211_unhold_bss(wdev->current_bss);
649 cfg80211_put_bss(&wdev->current_bss->pub);
652 wdev->current_bss = NULL;
653 wdev->sme_state = CFG80211_SME_IDLE;
660 kfree(wdev->conn->ie);
661 wdev->conn->ie = NULL;
666 * If this disconnect was due to a disassoc, we
667 * we might still have an auth BSS around. For
668 * the userspace SME that's currently expected,
669 * but for the kernel SME (nl80211 CONNECT or
670 * wireless extensions) we want to clear up all
673 for (i = 0; i < MAX_AUTH_BSSES; i++) {
674 if (!wdev->auth_bsses[i])
676 bssid = wdev->auth_bsses[i]->pub.bssid;
677 ret = __cfg80211_mlme_deauth(rdev, dev, bssid, NULL, 0,
678 WLAN_REASON_DEAUTH_LEAVING);
679 WARN(ret, "deauth failed: %d\n", ret);
683 nl80211_send_disconnected(rdev, dev, reason, ie, ie_len, from_ap);
686 * Delete all the keys ... pairwise keys can't really
687 * exist any more anyway, but default keys might.
689 if (rdev->ops->del_key)
690 for (i = 0; i < 6; i++)
691 rdev->ops->del_key(wdev->wiphy, dev, i, NULL);
693 #ifdef CONFIG_CFG80211_WEXT
694 memset(&wrqu, 0, sizeof(wrqu));
695 wrqu.ap_addr.sa_family = ARPHRD_ETHER;
696 wireless_send_event(dev, SIOCGIWAP, &wrqu, NULL);
697 wdev->wext.connect.ssid_len = 0;
700 schedule_work(&cfg80211_disconnect_work);
703 void cfg80211_disconnected(struct net_device *dev, u16 reason,
704 u8 *ie, size_t ie_len, gfp_t gfp)
706 struct wireless_dev *wdev = dev->ieee80211_ptr;
707 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
708 struct cfg80211_event *ev;
711 CFG80211_DEV_WARN_ON(wdev->sme_state != CFG80211_SME_CONNECTED);
713 ev = kzalloc(sizeof(*ev) + ie_len, gfp);
717 ev->type = EVENT_DISCONNECTED;
718 ev->dc.ie = ((u8 *)ev) + sizeof(*ev);
719 ev->dc.ie_len = ie_len;
720 memcpy((void *)ev->dc.ie, ie, ie_len);
721 ev->dc.reason = reason;
723 spin_lock_irqsave(&wdev->event_lock, flags);
724 list_add_tail(&ev->list, &wdev->event_list);
725 spin_unlock_irqrestore(&wdev->event_lock, flags);
726 queue_work(cfg80211_wq, &rdev->event_work);
728 EXPORT_SYMBOL(cfg80211_disconnected);
730 int __cfg80211_connect(struct cfg80211_registered_device *rdev,
731 struct net_device *dev,
732 struct cfg80211_connect_params *connect,
733 struct cfg80211_cached_keys *connkeys,
734 const u8 *prev_bssid)
736 struct wireless_dev *wdev = dev->ieee80211_ptr;
737 struct ieee80211_channel *chan;
738 struct cfg80211_bss *bss = NULL;
741 ASSERT_WDEV_LOCK(wdev);
743 if (wdev->sme_state != CFG80211_SME_IDLE)
746 chan = rdev_fixed_channel(rdev, wdev);
747 if (chan && chan != connect->channel)
750 if (WARN_ON(wdev->connect_keys)) {
751 kfree(wdev->connect_keys);
752 wdev->connect_keys = NULL;
755 if (connkeys && connkeys->def >= 0) {
760 cipher = connkeys->params[idx].cipher;
761 /* If given a WEP key we may need it for shared key auth */
762 if (cipher == WLAN_CIPHER_SUITE_WEP40 ||
763 cipher == WLAN_CIPHER_SUITE_WEP104) {
764 connect->key_idx = idx;
765 connect->key = connkeys->params[idx].key;
766 connect->key_len = connkeys->params[idx].key_len;
769 * If ciphers are not set (e.g. when going through
770 * iwconfig), we have to set them appropriately here.
772 if (connect->crypto.cipher_group == 0)
773 connect->crypto.cipher_group = cipher;
775 if (connect->crypto.n_ciphers_pairwise == 0) {
776 connect->crypto.n_ciphers_pairwise = 1;
777 connect->crypto.ciphers_pairwise[0] = cipher;
782 if (!rdev->ops->connect) {
783 if (!rdev->ops->auth || !rdev->ops->assoc)
786 if (WARN_ON(wdev->conn))
789 wdev->conn = kzalloc(sizeof(*wdev->conn), GFP_KERNEL);
794 * Copy all parameters, and treat explicitly IEs, BSSID, SSID.
796 memcpy(&wdev->conn->params, connect, sizeof(*connect));
797 if (connect->bssid) {
798 wdev->conn->params.bssid = wdev->conn->bssid;
799 memcpy(wdev->conn->bssid, connect->bssid, ETH_ALEN);
803 wdev->conn->ie = kmemdup(connect->ie, connect->ie_len,
805 wdev->conn->params.ie = wdev->conn->ie;
806 if (!wdev->conn->ie) {
813 if (connect->auth_type == NL80211_AUTHTYPE_AUTOMATIC) {
814 wdev->conn->auto_auth = true;
815 /* start with open system ... should mostly work */
816 wdev->conn->params.auth_type =
817 NL80211_AUTHTYPE_OPEN_SYSTEM;
819 wdev->conn->auto_auth = false;
822 memcpy(wdev->ssid, connect->ssid, connect->ssid_len);
823 wdev->ssid_len = connect->ssid_len;
824 wdev->conn->params.ssid = wdev->ssid;
825 wdev->conn->params.ssid_len = connect->ssid_len;
827 /* see if we have the bss already */
828 bss = cfg80211_get_conn_bss(wdev);
830 wdev->sme_state = CFG80211_SME_CONNECTING;
831 wdev->connect_keys = connkeys;
834 memcpy(wdev->conn->prev_bssid, prev_bssid, ETH_ALEN);
835 wdev->conn->prev_bssid_valid = true;
838 /* we're good if we have a matching bss struct */
840 wdev->conn->state = CFG80211_CONN_AUTHENTICATE_NEXT;
841 err = cfg80211_conn_do_work(wdev);
842 cfg80211_put_bss(bss);
844 /* otherwise we'll need to scan for the AP first */
845 err = cfg80211_conn_scan(wdev);
847 * If we can't scan right now, then we need to scan again
848 * after the current scan finished, since the parameters
849 * changed (unless we find a good AP anyway).
853 wdev->conn->state = CFG80211_CONN_SCAN_AGAIN;
857 kfree(wdev->conn->ie);
860 wdev->sme_state = CFG80211_SME_IDLE;
861 wdev->connect_keys = NULL;
867 wdev->sme_state = CFG80211_SME_CONNECTING;
868 wdev->connect_keys = connkeys;
869 err = rdev->ops->connect(&rdev->wiphy, dev, connect);
871 wdev->connect_keys = NULL;
872 wdev->sme_state = CFG80211_SME_IDLE;
876 memcpy(wdev->ssid, connect->ssid, connect->ssid_len);
877 wdev->ssid_len = connect->ssid_len;
883 int cfg80211_connect(struct cfg80211_registered_device *rdev,
884 struct net_device *dev,
885 struct cfg80211_connect_params *connect,
886 struct cfg80211_cached_keys *connkeys)
890 mutex_lock(&rdev->devlist_mtx);
891 wdev_lock(dev->ieee80211_ptr);
892 err = __cfg80211_connect(rdev, dev, connect, connkeys, NULL);
893 wdev_unlock(dev->ieee80211_ptr);
894 mutex_unlock(&rdev->devlist_mtx);
899 int __cfg80211_disconnect(struct cfg80211_registered_device *rdev,
900 struct net_device *dev, u16 reason, bool wextev)
902 struct wireless_dev *wdev = dev->ieee80211_ptr;
905 ASSERT_WDEV_LOCK(wdev);
907 if (wdev->sme_state == CFG80211_SME_IDLE)
910 kfree(wdev->connect_keys);
911 wdev->connect_keys = NULL;
913 if (!rdev->ops->disconnect) {
914 if (!rdev->ops->deauth)
917 /* was it connected by userspace SME? */
919 cfg80211_mlme_down(rdev, dev);
923 if (wdev->sme_state == CFG80211_SME_CONNECTING &&
924 (wdev->conn->state == CFG80211_CONN_SCANNING ||
925 wdev->conn->state == CFG80211_CONN_SCAN_AGAIN)) {
926 wdev->sme_state = CFG80211_SME_IDLE;
927 kfree(wdev->conn->ie);
934 /* wdev->conn->params.bssid must be set if > SCANNING */
935 err = __cfg80211_mlme_deauth(rdev, dev,
936 wdev->conn->params.bssid,
941 err = rdev->ops->disconnect(&rdev->wiphy, dev, reason);
946 if (wdev->sme_state == CFG80211_SME_CONNECTED)
947 __cfg80211_disconnected(dev, NULL, 0, 0, false);
948 else if (wdev->sme_state == CFG80211_SME_CONNECTING)
949 __cfg80211_connect_result(dev, NULL, NULL, 0, NULL, 0,
950 WLAN_STATUS_UNSPECIFIED_FAILURE,
956 int cfg80211_disconnect(struct cfg80211_registered_device *rdev,
957 struct net_device *dev,
958 u16 reason, bool wextev)
962 wdev_lock(dev->ieee80211_ptr);
963 err = __cfg80211_disconnect(rdev, dev, reason, wextev);
964 wdev_unlock(dev->ieee80211_ptr);
969 void cfg80211_sme_disassoc(struct net_device *dev, int idx)
971 struct wireless_dev *wdev = dev->ieee80211_ptr;
972 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
975 ASSERT_WDEV_LOCK(wdev);
980 if (wdev->conn->state == CFG80211_CONN_IDLE)
984 * Ok, so the association was made by this SME -- we don't
985 * want it any more so deauthenticate too.
988 if (!wdev->auth_bsses[idx])
991 memcpy(bssid, wdev->auth_bsses[idx]->pub.bssid, ETH_ALEN);
992 if (__cfg80211_mlme_deauth(rdev, dev, bssid,
993 NULL, 0, WLAN_REASON_DEAUTH_LEAVING)) {
994 /* whatever -- assume gone anyway */
995 cfg80211_unhold_bss(wdev->auth_bsses[idx]);
996 cfg80211_put_bss(&wdev->auth_bsses[idx]->pub);
997 wdev->auth_bsses[idx] = NULL;