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;
38 static int cfg80211_conn_scan(struct wireless_dev *wdev)
40 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
41 struct cfg80211_scan_request *request;
45 ASSERT_RDEV_LOCK(rdev);
46 ASSERT_WDEV_LOCK(wdev);
51 if (wdev->conn->params.channel) {
54 enum ieee80211_band band;
57 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
58 if (!wdev->wiphy->bands[band])
60 n_channels += wdev->wiphy->bands[band]->n_channels;
63 request = kzalloc(sizeof(*request) + sizeof(request->ssids[0]) +
64 sizeof(request->channels[0]) * n_channels,
69 if (wdev->conn->params.channel)
70 request->channels[0] = wdev->conn->params.channel;
73 enum ieee80211_band band;
75 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
76 if (!wdev->wiphy->bands[band])
78 for (j = 0; j < wdev->wiphy->bands[band]->n_channels;
80 request->channels[i] =
81 &wdev->wiphy->bands[band]->channels[j];
84 request->n_channels = n_channels;
85 request->ssids = (void *)&request->channels[n_channels];
88 memcpy(request->ssids[0].ssid, wdev->conn->params.ssid,
89 wdev->conn->params.ssid_len);
90 request->ssids[0].ssid_len = wdev->conn->params.ssid_len;
92 request->dev = wdev->netdev;
93 request->wiphy = &rdev->wiphy;
95 rdev->scan_req = request;
97 err = rdev->ops->scan(wdev->wiphy, wdev->netdev, request);
99 wdev->conn->state = CFG80211_CONN_SCANNING;
100 nl80211_send_scan_start(rdev, wdev->netdev);
101 dev_hold(wdev->netdev);
103 rdev->scan_req = NULL;
109 static int cfg80211_conn_do_work(struct wireless_dev *wdev)
111 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
112 struct cfg80211_connect_params *params;
113 const u8 *prev_bssid = NULL;
116 ASSERT_WDEV_LOCK(wdev);
121 params = &wdev->conn->params;
123 switch (wdev->conn->state) {
124 case CFG80211_CONN_SCAN_AGAIN:
125 return cfg80211_conn_scan(wdev);
126 case CFG80211_CONN_AUTHENTICATE_NEXT:
127 BUG_ON(!rdev->ops->auth);
128 wdev->conn->state = CFG80211_CONN_AUTHENTICATING;
129 return __cfg80211_mlme_auth(rdev, wdev->netdev,
130 params->channel, params->auth_type,
132 params->ssid, params->ssid_len,
134 params->key, params->key_len,
136 case CFG80211_CONN_ASSOCIATE_NEXT:
137 BUG_ON(!rdev->ops->assoc);
138 wdev->conn->state = CFG80211_CONN_ASSOCIATING;
139 if (wdev->conn->prev_bssid_valid)
140 prev_bssid = wdev->conn->prev_bssid;
141 err = __cfg80211_mlme_assoc(rdev, wdev->netdev,
142 params->channel, params->bssid,
144 params->ssid, params->ssid_len,
145 params->ie, params->ie_len,
146 false, ¶ms->crypto);
148 __cfg80211_mlme_deauth(rdev, wdev->netdev, params->bssid,
150 WLAN_REASON_DEAUTH_LEAVING);
152 case CFG80211_CONN_DEAUTH_ASSOC_FAIL:
153 __cfg80211_mlme_deauth(rdev, wdev->netdev, params->bssid,
155 WLAN_REASON_DEAUTH_LEAVING);
156 /* return an error so that we call __cfg80211_connect_result() */
163 void cfg80211_conn_work(struct work_struct *work)
165 struct cfg80211_registered_device *rdev =
166 container_of(work, struct cfg80211_registered_device, conn_work);
167 struct wireless_dev *wdev;
168 u8 bssid_buf[ETH_ALEN], *bssid = NULL;
171 cfg80211_lock_rdev(rdev);
172 mutex_lock(&rdev->devlist_mtx);
174 list_for_each_entry(wdev, &rdev->netdev_list, list) {
176 if (!netif_running(wdev->netdev)) {
180 if (wdev->sme_state != CFG80211_SME_CONNECTING) {
184 if (wdev->conn->params.bssid) {
185 memcpy(bssid_buf, wdev->conn->params.bssid, ETH_ALEN);
188 if (cfg80211_conn_do_work(wdev))
189 __cfg80211_connect_result(
192 WLAN_STATUS_UNSPECIFIED_FAILURE,
197 mutex_unlock(&rdev->devlist_mtx);
198 cfg80211_unlock_rdev(rdev);
202 static struct cfg80211_bss *cfg80211_get_conn_bss(struct wireless_dev *wdev)
204 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
205 struct cfg80211_bss *bss;
206 u16 capa = WLAN_CAPABILITY_ESS;
208 ASSERT_WDEV_LOCK(wdev);
210 if (wdev->conn->params.privacy)
211 capa |= WLAN_CAPABILITY_PRIVACY;
213 bss = cfg80211_get_bss(wdev->wiphy, NULL, wdev->conn->params.bssid,
214 wdev->conn->params.ssid,
215 wdev->conn->params.ssid_len,
216 WLAN_CAPABILITY_ESS | WLAN_CAPABILITY_PRIVACY,
221 memcpy(wdev->conn->bssid, bss->bssid, ETH_ALEN);
222 wdev->conn->params.bssid = wdev->conn->bssid;
223 wdev->conn->params.channel = bss->channel;
224 wdev->conn->state = CFG80211_CONN_AUTHENTICATE_NEXT;
225 schedule_work(&rdev->conn_work);
230 static void __cfg80211_sme_scan_done(struct net_device *dev)
232 struct wireless_dev *wdev = dev->ieee80211_ptr;
233 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
234 struct cfg80211_bss *bss;
236 ASSERT_WDEV_LOCK(wdev);
238 if (wdev->sme_state != CFG80211_SME_CONNECTING)
244 if (wdev->conn->state != CFG80211_CONN_SCANNING &&
245 wdev->conn->state != CFG80211_CONN_SCAN_AGAIN)
248 bss = cfg80211_get_conn_bss(wdev);
250 cfg80211_put_bss(bss);
253 if (wdev->conn->state == CFG80211_CONN_SCAN_AGAIN)
254 schedule_work(&rdev->conn_work);
256 __cfg80211_connect_result(
258 wdev->conn->params.bssid,
260 WLAN_STATUS_UNSPECIFIED_FAILURE,
265 void cfg80211_sme_scan_done(struct net_device *dev)
267 struct wireless_dev *wdev = dev->ieee80211_ptr;
269 mutex_lock(&wiphy_to_dev(wdev->wiphy)->devlist_mtx);
271 __cfg80211_sme_scan_done(dev);
273 mutex_unlock(&wiphy_to_dev(wdev->wiphy)->devlist_mtx);
276 void cfg80211_sme_rx_auth(struct net_device *dev,
277 const u8 *buf, size_t len)
279 struct wireless_dev *wdev = dev->ieee80211_ptr;
280 struct wiphy *wiphy = wdev->wiphy;
281 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
282 struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)buf;
283 u16 status_code = le16_to_cpu(mgmt->u.auth.status_code);
285 ASSERT_WDEV_LOCK(wdev);
287 /* should only RX auth frames when connecting */
288 if (wdev->sme_state != CFG80211_SME_CONNECTING)
291 if (WARN_ON(!wdev->conn))
294 if (status_code == WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG &&
295 wdev->conn->auto_auth &&
296 wdev->conn->params.auth_type != NL80211_AUTHTYPE_NETWORK_EAP) {
297 /* select automatically between only open, shared, leap */
298 switch (wdev->conn->params.auth_type) {
299 case NL80211_AUTHTYPE_OPEN_SYSTEM:
300 if (wdev->connect_keys)
301 wdev->conn->params.auth_type =
302 NL80211_AUTHTYPE_SHARED_KEY;
304 wdev->conn->params.auth_type =
305 NL80211_AUTHTYPE_NETWORK_EAP;
307 case NL80211_AUTHTYPE_SHARED_KEY:
308 wdev->conn->params.auth_type =
309 NL80211_AUTHTYPE_NETWORK_EAP;
313 wdev->conn->params.auth_type =
314 NL80211_AUTHTYPE_OPEN_SYSTEM;
317 wdev->conn->state = CFG80211_CONN_AUTHENTICATE_NEXT;
318 schedule_work(&rdev->conn_work);
319 } else if (status_code != WLAN_STATUS_SUCCESS) {
320 __cfg80211_connect_result(dev, mgmt->bssid, NULL, 0, NULL, 0,
321 status_code, false, NULL);
322 } else if (wdev->sme_state == CFG80211_SME_CONNECTING &&
323 wdev->conn->state == CFG80211_CONN_AUTHENTICATING) {
324 wdev->conn->state = CFG80211_CONN_ASSOCIATE_NEXT;
325 schedule_work(&rdev->conn_work);
329 bool cfg80211_sme_failed_reassoc(struct wireless_dev *wdev)
331 struct wiphy *wiphy = wdev->wiphy;
332 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
334 if (WARN_ON(!wdev->conn))
337 if (!wdev->conn->prev_bssid_valid)
341 * Some stupid APs don't accept reassoc, so we
342 * need to fall back to trying regular assoc.
344 wdev->conn->prev_bssid_valid = false;
345 wdev->conn->state = CFG80211_CONN_ASSOCIATE_NEXT;
346 schedule_work(&rdev->conn_work);
351 void cfg80211_sme_failed_assoc(struct wireless_dev *wdev)
353 struct wiphy *wiphy = wdev->wiphy;
354 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
356 wdev->conn->state = CFG80211_CONN_DEAUTH_ASSOC_FAIL;
357 schedule_work(&rdev->conn_work);
360 void __cfg80211_connect_result(struct net_device *dev, const u8 *bssid,
361 const u8 *req_ie, size_t req_ie_len,
362 const u8 *resp_ie, size_t resp_ie_len,
363 u16 status, bool wextev,
364 struct cfg80211_bss *bss)
366 struct wireless_dev *wdev = dev->ieee80211_ptr;
368 #ifdef CONFIG_CFG80211_WEXT
369 union iwreq_data wrqu;
372 ASSERT_WDEV_LOCK(wdev);
374 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION))
377 if (wdev->sme_state != CFG80211_SME_CONNECTING)
380 nl80211_send_connect_result(wiphy_to_dev(wdev->wiphy), dev,
381 bssid, req_ie, req_ie_len,
382 resp_ie, resp_ie_len,
385 #ifdef CONFIG_CFG80211_WEXT
387 if (req_ie && status == WLAN_STATUS_SUCCESS) {
388 memset(&wrqu, 0, sizeof(wrqu));
389 wrqu.data.length = req_ie_len;
390 wireless_send_event(dev, IWEVASSOCREQIE, &wrqu, req_ie);
393 if (resp_ie && status == WLAN_STATUS_SUCCESS) {
394 memset(&wrqu, 0, sizeof(wrqu));
395 wrqu.data.length = resp_ie_len;
396 wireless_send_event(dev, IWEVASSOCRESPIE, &wrqu, resp_ie);
399 memset(&wrqu, 0, sizeof(wrqu));
400 wrqu.ap_addr.sa_family = ARPHRD_ETHER;
401 if (bssid && status == WLAN_STATUS_SUCCESS) {
402 memcpy(wrqu.ap_addr.sa_data, bssid, ETH_ALEN);
403 memcpy(wdev->wext.prev_bssid, bssid, ETH_ALEN);
404 wdev->wext.prev_bssid_valid = true;
406 wireless_send_event(dev, SIOCGIWAP, &wrqu, NULL);
410 if (wdev->current_bss) {
411 cfg80211_unhold_bss(wdev->current_bss);
412 cfg80211_put_bss(&wdev->current_bss->pub);
413 wdev->current_bss = NULL;
417 wdev->conn->state = CFG80211_CONN_IDLE;
419 if (status != WLAN_STATUS_SUCCESS) {
420 wdev->sme_state = CFG80211_SME_IDLE;
422 kfree(wdev->conn->ie);
425 kfree(wdev->connect_keys);
426 wdev->connect_keys = NULL;
432 bss = cfg80211_get_bss(wdev->wiphy, NULL, bssid,
433 wdev->ssid, wdev->ssid_len,
435 WLAN_CAPABILITY_ESS);
440 cfg80211_hold_bss(bss_from_pub(bss));
441 wdev->current_bss = bss_from_pub(bss);
443 wdev->sme_state = CFG80211_SME_CONNECTED;
444 cfg80211_upload_connect_keys(wdev);
446 country_ie = (u8 *) ieee80211_bss_get_ie(bss, WLAN_EID_COUNTRY);
452 * ieee80211_bss_get_ie() ensures we can access:
453 * - country_ie + 2, the start of the country ie data, and
454 * - and country_ie[1] which is the IE length
456 regulatory_hint_11d(wdev->wiphy,
462 void cfg80211_connect_result(struct net_device *dev, const u8 *bssid,
463 const u8 *req_ie, size_t req_ie_len,
464 const u8 *resp_ie, size_t resp_ie_len,
465 u16 status, gfp_t gfp)
467 struct wireless_dev *wdev = dev->ieee80211_ptr;
468 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
469 struct cfg80211_event *ev;
472 CFG80211_DEV_WARN_ON(wdev->sme_state != CFG80211_SME_CONNECTING);
474 ev = kzalloc(sizeof(*ev) + req_ie_len + resp_ie_len, gfp);
478 ev->type = EVENT_CONNECT_RESULT;
480 memcpy(ev->cr.bssid, bssid, ETH_ALEN);
481 ev->cr.req_ie = ((u8 *)ev) + sizeof(*ev);
482 ev->cr.req_ie_len = req_ie_len;
483 memcpy((void *)ev->cr.req_ie, req_ie, req_ie_len);
484 ev->cr.resp_ie = ((u8 *)ev) + sizeof(*ev) + req_ie_len;
485 ev->cr.resp_ie_len = resp_ie_len;
486 memcpy((void *)ev->cr.resp_ie, resp_ie, resp_ie_len);
487 ev->cr.status = status;
489 spin_lock_irqsave(&wdev->event_lock, flags);
490 list_add_tail(&ev->list, &wdev->event_list);
491 spin_unlock_irqrestore(&wdev->event_lock, flags);
492 queue_work(cfg80211_wq, &rdev->event_work);
494 EXPORT_SYMBOL(cfg80211_connect_result);
496 void __cfg80211_roamed(struct wireless_dev *wdev, const u8 *bssid,
497 const u8 *req_ie, size_t req_ie_len,
498 const u8 *resp_ie, size_t resp_ie_len)
500 struct cfg80211_bss *bss;
501 #ifdef CONFIG_CFG80211_WEXT
502 union iwreq_data wrqu;
505 ASSERT_WDEV_LOCK(wdev);
507 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION))
510 if (wdev->sme_state != CFG80211_SME_CONNECTED)
513 /* internal error -- how did we get to CONNECTED w/o BSS? */
514 if (WARN_ON(!wdev->current_bss)) {
518 cfg80211_unhold_bss(wdev->current_bss);
519 cfg80211_put_bss(&wdev->current_bss->pub);
520 wdev->current_bss = NULL;
522 bss = cfg80211_get_bss(wdev->wiphy, NULL, bssid,
523 wdev->ssid, wdev->ssid_len,
524 WLAN_CAPABILITY_ESS, WLAN_CAPABILITY_ESS);
529 cfg80211_hold_bss(bss_from_pub(bss));
530 wdev->current_bss = bss_from_pub(bss);
532 nl80211_send_roamed(wiphy_to_dev(wdev->wiphy), wdev->netdev, bssid,
533 req_ie, req_ie_len, resp_ie, resp_ie_len,
536 #ifdef CONFIG_CFG80211_WEXT
538 memset(&wrqu, 0, sizeof(wrqu));
539 wrqu.data.length = req_ie_len;
540 wireless_send_event(wdev->netdev, IWEVASSOCREQIE,
545 memset(&wrqu, 0, sizeof(wrqu));
546 wrqu.data.length = resp_ie_len;
547 wireless_send_event(wdev->netdev, IWEVASSOCRESPIE,
551 memset(&wrqu, 0, sizeof(wrqu));
552 wrqu.ap_addr.sa_family = ARPHRD_ETHER;
553 memcpy(wrqu.ap_addr.sa_data, bssid, ETH_ALEN);
554 memcpy(wdev->wext.prev_bssid, bssid, ETH_ALEN);
555 wdev->wext.prev_bssid_valid = true;
556 wireless_send_event(wdev->netdev, SIOCGIWAP, &wrqu, NULL);
560 void cfg80211_roamed(struct net_device *dev, const u8 *bssid,
561 const u8 *req_ie, size_t req_ie_len,
562 const u8 *resp_ie, size_t resp_ie_len, gfp_t gfp)
564 struct wireless_dev *wdev = dev->ieee80211_ptr;
565 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
566 struct cfg80211_event *ev;
569 CFG80211_DEV_WARN_ON(wdev->sme_state != CFG80211_SME_CONNECTED);
571 ev = kzalloc(sizeof(*ev) + req_ie_len + resp_ie_len, gfp);
575 ev->type = EVENT_ROAMED;
576 memcpy(ev->rm.bssid, bssid, ETH_ALEN);
577 ev->rm.req_ie = ((u8 *)ev) + sizeof(*ev);
578 ev->rm.req_ie_len = req_ie_len;
579 memcpy((void *)ev->rm.req_ie, req_ie, req_ie_len);
580 ev->rm.resp_ie = ((u8 *)ev) + sizeof(*ev) + req_ie_len;
581 ev->rm.resp_ie_len = resp_ie_len;
582 memcpy((void *)ev->rm.resp_ie, resp_ie, resp_ie_len);
584 spin_lock_irqsave(&wdev->event_lock, flags);
585 list_add_tail(&ev->list, &wdev->event_list);
586 spin_unlock_irqrestore(&wdev->event_lock, flags);
587 queue_work(cfg80211_wq, &rdev->event_work);
589 EXPORT_SYMBOL(cfg80211_roamed);
591 void __cfg80211_disconnected(struct net_device *dev, const u8 *ie,
592 size_t ie_len, u16 reason, bool from_ap)
594 struct wireless_dev *wdev = dev->ieee80211_ptr;
595 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
597 #ifdef CONFIG_CFG80211_WEXT
598 union iwreq_data wrqu;
601 ASSERT_WDEV_LOCK(wdev);
603 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION))
606 if (wdev->sme_state != CFG80211_SME_CONNECTED)
609 if (wdev->current_bss) {
610 cfg80211_unhold_bss(wdev->current_bss);
611 cfg80211_put_bss(&wdev->current_bss->pub);
614 wdev->current_bss = NULL;
615 wdev->sme_state = CFG80211_SME_IDLE;
622 kfree(wdev->conn->ie);
623 wdev->conn->ie = NULL;
628 * If this disconnect was due to a disassoc, we
629 * we might still have an auth BSS around. For
630 * the userspace SME that's currently expected,
631 * but for the kernel SME (nl80211 CONNECT or
632 * wireless extensions) we want to clear up all
635 for (i = 0; i < MAX_AUTH_BSSES; i++) {
636 if (!wdev->auth_bsses[i])
638 bssid = wdev->auth_bsses[i]->pub.bssid;
639 ret = __cfg80211_mlme_deauth(rdev, dev, bssid, NULL, 0,
640 WLAN_REASON_DEAUTH_LEAVING);
641 WARN(ret, "deauth failed: %d\n", ret);
645 nl80211_send_disconnected(rdev, dev, reason, ie, ie_len, from_ap);
648 * Delete all the keys ... pairwise keys can't really
649 * exist any more anyway, but default keys might.
651 if (rdev->ops->del_key)
652 for (i = 0; i < 6; i++)
653 rdev->ops->del_key(wdev->wiphy, dev, i, NULL);
655 #ifdef CONFIG_CFG80211_WEXT
656 memset(&wrqu, 0, sizeof(wrqu));
657 wrqu.ap_addr.sa_family = ARPHRD_ETHER;
658 wireless_send_event(dev, SIOCGIWAP, &wrqu, NULL);
659 wdev->wext.connect.ssid_len = 0;
663 void cfg80211_disconnected(struct net_device *dev, u16 reason,
664 u8 *ie, size_t ie_len, gfp_t gfp)
666 struct wireless_dev *wdev = dev->ieee80211_ptr;
667 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
668 struct cfg80211_event *ev;
671 CFG80211_DEV_WARN_ON(wdev->sme_state != CFG80211_SME_CONNECTED);
673 ev = kzalloc(sizeof(*ev) + ie_len, gfp);
677 ev->type = EVENT_DISCONNECTED;
678 ev->dc.ie = ((u8 *)ev) + sizeof(*ev);
679 ev->dc.ie_len = ie_len;
680 memcpy((void *)ev->dc.ie, ie, ie_len);
681 ev->dc.reason = reason;
683 spin_lock_irqsave(&wdev->event_lock, flags);
684 list_add_tail(&ev->list, &wdev->event_list);
685 spin_unlock_irqrestore(&wdev->event_lock, flags);
686 queue_work(cfg80211_wq, &rdev->event_work);
688 EXPORT_SYMBOL(cfg80211_disconnected);
690 int __cfg80211_connect(struct cfg80211_registered_device *rdev,
691 struct net_device *dev,
692 struct cfg80211_connect_params *connect,
693 struct cfg80211_cached_keys *connkeys,
694 const u8 *prev_bssid)
696 struct wireless_dev *wdev = dev->ieee80211_ptr;
697 struct ieee80211_channel *chan;
698 struct cfg80211_bss *bss = NULL;
701 ASSERT_WDEV_LOCK(wdev);
703 if (wdev->sme_state != CFG80211_SME_IDLE)
706 chan = rdev_fixed_channel(rdev, wdev);
707 if (chan && chan != connect->channel)
710 if (WARN_ON(wdev->connect_keys)) {
711 kfree(wdev->connect_keys);
712 wdev->connect_keys = NULL;
715 if (connkeys && connkeys->def >= 0) {
720 cipher = connkeys->params[idx].cipher;
721 /* If given a WEP key we may need it for shared key auth */
722 if (cipher == WLAN_CIPHER_SUITE_WEP40 ||
723 cipher == WLAN_CIPHER_SUITE_WEP104) {
724 connect->key_idx = idx;
725 connect->key = connkeys->params[idx].key;
726 connect->key_len = connkeys->params[idx].key_len;
729 * If ciphers are not set (e.g. when going through
730 * iwconfig), we have to set them appropriately here.
732 if (connect->crypto.cipher_group == 0)
733 connect->crypto.cipher_group = cipher;
735 if (connect->crypto.n_ciphers_pairwise == 0) {
736 connect->crypto.n_ciphers_pairwise = 1;
737 connect->crypto.ciphers_pairwise[0] = cipher;
742 if (!rdev->ops->connect) {
743 if (!rdev->ops->auth || !rdev->ops->assoc)
746 if (WARN_ON(wdev->conn))
749 wdev->conn = kzalloc(sizeof(*wdev->conn), GFP_KERNEL);
754 * Copy all parameters, and treat explicitly IEs, BSSID, SSID.
756 memcpy(&wdev->conn->params, connect, sizeof(*connect));
757 if (connect->bssid) {
758 wdev->conn->params.bssid = wdev->conn->bssid;
759 memcpy(wdev->conn->bssid, connect->bssid, ETH_ALEN);
763 wdev->conn->ie = kmemdup(connect->ie, connect->ie_len,
765 wdev->conn->params.ie = wdev->conn->ie;
766 if (!wdev->conn->ie) {
773 if (connect->auth_type == NL80211_AUTHTYPE_AUTOMATIC) {
774 wdev->conn->auto_auth = true;
775 /* start with open system ... should mostly work */
776 wdev->conn->params.auth_type =
777 NL80211_AUTHTYPE_OPEN_SYSTEM;
779 wdev->conn->auto_auth = false;
782 memcpy(wdev->ssid, connect->ssid, connect->ssid_len);
783 wdev->ssid_len = connect->ssid_len;
784 wdev->conn->params.ssid = wdev->ssid;
785 wdev->conn->params.ssid_len = connect->ssid_len;
787 /* see if we have the bss already */
788 bss = cfg80211_get_conn_bss(wdev);
790 wdev->sme_state = CFG80211_SME_CONNECTING;
791 wdev->connect_keys = connkeys;
794 memcpy(wdev->conn->prev_bssid, prev_bssid, ETH_ALEN);
795 wdev->conn->prev_bssid_valid = true;
798 /* we're good if we have a matching bss struct */
800 wdev->conn->state = CFG80211_CONN_AUTHENTICATE_NEXT;
801 err = cfg80211_conn_do_work(wdev);
802 cfg80211_put_bss(bss);
804 /* otherwise we'll need to scan for the AP first */
805 err = cfg80211_conn_scan(wdev);
807 * If we can't scan right now, then we need to scan again
808 * after the current scan finished, since the parameters
809 * changed (unless we find a good AP anyway).
813 wdev->conn->state = CFG80211_CONN_SCAN_AGAIN;
817 kfree(wdev->conn->ie);
820 wdev->sme_state = CFG80211_SME_IDLE;
821 wdev->connect_keys = NULL;
827 wdev->sme_state = CFG80211_SME_CONNECTING;
828 wdev->connect_keys = connkeys;
829 err = rdev->ops->connect(&rdev->wiphy, dev, connect);
831 wdev->connect_keys = NULL;
832 wdev->sme_state = CFG80211_SME_IDLE;
836 memcpy(wdev->ssid, connect->ssid, connect->ssid_len);
837 wdev->ssid_len = connect->ssid_len;
843 int cfg80211_connect(struct cfg80211_registered_device *rdev,
844 struct net_device *dev,
845 struct cfg80211_connect_params *connect,
846 struct cfg80211_cached_keys *connkeys)
850 mutex_lock(&rdev->devlist_mtx);
851 wdev_lock(dev->ieee80211_ptr);
852 err = __cfg80211_connect(rdev, dev, connect, connkeys, NULL);
853 wdev_unlock(dev->ieee80211_ptr);
854 mutex_unlock(&rdev->devlist_mtx);
859 int __cfg80211_disconnect(struct cfg80211_registered_device *rdev,
860 struct net_device *dev, u16 reason, bool wextev)
862 struct wireless_dev *wdev = dev->ieee80211_ptr;
865 ASSERT_WDEV_LOCK(wdev);
867 if (wdev->sme_state == CFG80211_SME_IDLE)
870 kfree(wdev->connect_keys);
871 wdev->connect_keys = NULL;
873 if (!rdev->ops->disconnect) {
874 if (!rdev->ops->deauth)
877 /* was it connected by userspace SME? */
879 cfg80211_mlme_down(rdev, dev);
883 if (wdev->sme_state == CFG80211_SME_CONNECTING &&
884 (wdev->conn->state == CFG80211_CONN_SCANNING ||
885 wdev->conn->state == CFG80211_CONN_SCAN_AGAIN)) {
886 wdev->sme_state = CFG80211_SME_IDLE;
887 kfree(wdev->conn->ie);
894 /* wdev->conn->params.bssid must be set if > SCANNING */
895 err = __cfg80211_mlme_deauth(rdev, dev,
896 wdev->conn->params.bssid,
901 err = rdev->ops->disconnect(&rdev->wiphy, dev, reason);
906 if (wdev->sme_state == CFG80211_SME_CONNECTED)
907 __cfg80211_disconnected(dev, NULL, 0, 0, false);
908 else if (wdev->sme_state == CFG80211_SME_CONNECTING)
909 __cfg80211_connect_result(dev, NULL, NULL, 0, NULL, 0,
910 WLAN_STATUS_UNSPECIFIED_FAILURE,
916 int cfg80211_disconnect(struct cfg80211_registered_device *rdev,
917 struct net_device *dev,
918 u16 reason, bool wextev)
922 wdev_lock(dev->ieee80211_ptr);
923 err = __cfg80211_disconnect(rdev, dev, reason, wextev);
924 wdev_unlock(dev->ieee80211_ptr);
929 void cfg80211_sme_disassoc(struct net_device *dev, int idx)
931 struct wireless_dev *wdev = dev->ieee80211_ptr;
932 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
935 ASSERT_WDEV_LOCK(wdev);
940 if (wdev->conn->state == CFG80211_CONN_IDLE)
944 * Ok, so the association was made by this SME -- we don't
945 * want it any more so deauthenticate too.
948 if (!wdev->auth_bsses[idx])
951 memcpy(bssid, wdev->auth_bsses[idx]->pub.bssid, ETH_ALEN);
952 if (__cfg80211_mlme_deauth(rdev, dev, bssid,
953 NULL, 0, WLAN_REASON_DEAUTH_LEAVING)) {
954 /* whatever -- assume gone anyway */
955 cfg80211_unhold_bss(wdev->auth_bsses[idx]);
956 cfg80211_put_bss(&wdev->auth_bsses[idx]->pub);
957 wdev->auth_bsses[idx] = NULL;