2 * SME code for cfg80211
3 * both driver SME event handling and the SME implementation
4 * (for nl80211's connect() and wext)
6 * Copyright 2009 Johannes Berg <johannes@sipsolutions.net>
7 * Copyright (C) 2009 Intel Corporation. All rights reserved.
10 #include <linux/etherdevice.h>
11 #include <linux/if_arp.h>
12 #include <linux/slab.h>
13 #include <linux/workqueue.h>
14 #include <linux/wireless.h>
15 #include <linux/export.h>
16 #include <net/iw_handler.h>
17 #include <net/cfg80211.h>
18 #include <net/rtnetlink.h>
24 * Software SME in cfg80211, using auth/assoc/deauth calls to the
25 * driver. This is is for implementing nl80211's connect/disconnect
26 * and wireless extensions (if configured.)
29 struct cfg80211_conn {
30 struct cfg80211_connect_params params;
31 /* these are sub-states of the _CONNECTING sme_state */
33 CFG80211_CONN_SCANNING,
34 CFG80211_CONN_SCAN_AGAIN,
35 CFG80211_CONN_AUTHENTICATE_NEXT,
36 CFG80211_CONN_AUTHENTICATING,
37 CFG80211_CONN_ASSOCIATE_NEXT,
38 CFG80211_CONN_ASSOCIATING,
40 CFG80211_CONN_CONNECTED,
42 u8 bssid[ETH_ALEN], prev_bssid[ETH_ALEN];
45 bool auto_auth, prev_bssid_valid;
48 static void cfg80211_sme_free(struct wireless_dev *wdev)
53 kfree(wdev->conn->ie);
58 static int cfg80211_conn_scan(struct wireless_dev *wdev)
60 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
61 struct cfg80211_scan_request *request;
65 ASSERT_RDEV_LOCK(rdev);
66 ASSERT_WDEV_LOCK(wdev);
71 if (wdev->conn->params.channel) {
74 enum ieee80211_band band;
77 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
78 if (!wdev->wiphy->bands[band])
80 n_channels += wdev->wiphy->bands[band]->n_channels;
83 request = kzalloc(sizeof(*request) + sizeof(request->ssids[0]) +
84 sizeof(request->channels[0]) * n_channels,
89 if (wdev->conn->params.channel)
90 request->channels[0] = wdev->conn->params.channel;
93 enum ieee80211_band band;
94 struct ieee80211_supported_band *bands;
95 struct ieee80211_channel *channel;
97 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
98 bands = wdev->wiphy->bands[band];
101 for (j = 0; j < bands->n_channels; j++) {
102 channel = &bands->channels[j];
103 if (channel->flags & IEEE80211_CHAN_DISABLED)
105 request->channels[i++] = channel;
107 request->rates[band] = (1 << bands->n_bitrates) - 1;
111 request->n_channels = n_channels;
112 request->ssids = (void *)&request->channels[n_channels];
113 request->n_ssids = 1;
115 memcpy(request->ssids[0].ssid, wdev->conn->params.ssid,
116 wdev->conn->params.ssid_len);
117 request->ssids[0].ssid_len = wdev->conn->params.ssid_len;
119 request->wdev = wdev;
120 request->wiphy = &rdev->wiphy;
121 request->scan_start = jiffies;
123 rdev->scan_req = request;
125 err = rdev_scan(rdev, request);
127 wdev->conn->state = CFG80211_CONN_SCANNING;
128 nl80211_send_scan_start(rdev, wdev);
129 dev_hold(wdev->netdev);
131 rdev->scan_req = NULL;
137 static int cfg80211_conn_do_work(struct wireless_dev *wdev)
139 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
140 struct cfg80211_connect_params *params;
141 struct cfg80211_assoc_request req = {};
144 ASSERT_WDEV_LOCK(wdev);
149 params = &wdev->conn->params;
151 switch (wdev->conn->state) {
152 case CFG80211_CONN_SCANNING:
153 /* didn't find it during scan ... */
155 case CFG80211_CONN_SCAN_AGAIN:
156 return cfg80211_conn_scan(wdev);
157 case CFG80211_CONN_AUTHENTICATE_NEXT:
158 BUG_ON(!rdev->ops->auth);
159 wdev->conn->state = CFG80211_CONN_AUTHENTICATING;
160 return cfg80211_mlme_auth(rdev, wdev->netdev,
161 params->channel, params->auth_type,
163 params->ssid, params->ssid_len,
165 params->key, params->key_len,
166 params->key_idx, NULL, 0);
167 case CFG80211_CONN_ASSOCIATE_NEXT:
168 BUG_ON(!rdev->ops->assoc);
169 wdev->conn->state = CFG80211_CONN_ASSOCIATING;
170 if (wdev->conn->prev_bssid_valid)
171 req.prev_bssid = wdev->conn->prev_bssid;
173 req.ie_len = params->ie_len;
174 req.use_mfp = params->mfp != NL80211_MFP_NO;
175 req.crypto = params->crypto;
176 req.flags = params->flags;
177 req.ht_capa = params->ht_capa;
178 req.ht_capa_mask = params->ht_capa_mask;
179 req.vht_capa = params->vht_capa;
180 req.vht_capa_mask = params->vht_capa_mask;
182 err = cfg80211_mlme_assoc(rdev, wdev->netdev, params->channel,
183 params->bssid, params->ssid,
184 params->ssid_len, &req);
186 cfg80211_mlme_deauth(rdev, wdev->netdev, params->bssid,
188 WLAN_REASON_DEAUTH_LEAVING,
191 case CFG80211_CONN_DEAUTH:
192 cfg80211_mlme_deauth(rdev, wdev->netdev, params->bssid,
194 WLAN_REASON_DEAUTH_LEAVING, false);
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;
210 list_for_each_entry(wdev, &rdev->wdev_list, list) {
215 if (!netif_running(wdev->netdev)) {
220 wdev->conn->state == CFG80211_CONN_CONNECTED) {
224 if (wdev->conn->params.bssid) {
225 memcpy(bssid_buf, wdev->conn->params.bssid, ETH_ALEN);
228 if (cfg80211_conn_do_work(wdev)) {
229 __cfg80211_connect_result(
232 WLAN_STATUS_UNSPECIFIED_FAILURE,
234 cfg80211_sme_free(wdev);
242 /* Returned bss is reference counted and must be cleaned up appropriately. */
243 static struct cfg80211_bss *cfg80211_get_conn_bss(struct wireless_dev *wdev)
245 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
246 struct cfg80211_bss *bss;
247 u16 capa = WLAN_CAPABILITY_ESS;
249 ASSERT_WDEV_LOCK(wdev);
251 if (wdev->conn->params.privacy)
252 capa |= WLAN_CAPABILITY_PRIVACY;
254 bss = cfg80211_get_bss(wdev->wiphy, wdev->conn->params.channel,
255 wdev->conn->params.bssid,
256 wdev->conn->params.ssid,
257 wdev->conn->params.ssid_len,
258 WLAN_CAPABILITY_ESS | WLAN_CAPABILITY_PRIVACY,
263 memcpy(wdev->conn->bssid, bss->bssid, ETH_ALEN);
264 wdev->conn->params.bssid = wdev->conn->bssid;
265 wdev->conn->params.channel = bss->channel;
266 wdev->conn->state = CFG80211_CONN_AUTHENTICATE_NEXT;
267 schedule_work(&rdev->conn_work);
272 static void __cfg80211_sme_scan_done(struct net_device *dev)
274 struct wireless_dev *wdev = dev->ieee80211_ptr;
275 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
276 struct cfg80211_bss *bss;
278 ASSERT_WDEV_LOCK(wdev);
283 if (wdev->conn->state != CFG80211_CONN_SCANNING &&
284 wdev->conn->state != CFG80211_CONN_SCAN_AGAIN)
287 bss = cfg80211_get_conn_bss(wdev);
289 cfg80211_put_bss(&rdev->wiphy, bss);
291 schedule_work(&rdev->conn_work);
294 void cfg80211_sme_scan_done(struct net_device *dev)
296 struct wireless_dev *wdev = dev->ieee80211_ptr;
299 __cfg80211_sme_scan_done(dev);
303 void cfg80211_sme_rx_auth(struct wireless_dev *wdev, const u8 *buf, size_t len)
305 struct wiphy *wiphy = wdev->wiphy;
306 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
307 struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)buf;
308 u16 status_code = le16_to_cpu(mgmt->u.auth.status_code);
310 ASSERT_WDEV_LOCK(wdev);
312 if (!wdev->conn || wdev->conn->state == CFG80211_CONN_CONNECTED)
315 if (status_code == WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG &&
316 wdev->conn->auto_auth &&
317 wdev->conn->params.auth_type != NL80211_AUTHTYPE_NETWORK_EAP) {
318 /* select automatically between only open, shared, leap */
319 switch (wdev->conn->params.auth_type) {
320 case NL80211_AUTHTYPE_OPEN_SYSTEM:
321 if (wdev->connect_keys)
322 wdev->conn->params.auth_type =
323 NL80211_AUTHTYPE_SHARED_KEY;
325 wdev->conn->params.auth_type =
326 NL80211_AUTHTYPE_NETWORK_EAP;
328 case NL80211_AUTHTYPE_SHARED_KEY:
329 wdev->conn->params.auth_type =
330 NL80211_AUTHTYPE_NETWORK_EAP;
334 wdev->conn->params.auth_type =
335 NL80211_AUTHTYPE_OPEN_SYSTEM;
338 wdev->conn->state = CFG80211_CONN_AUTHENTICATE_NEXT;
339 schedule_work(&rdev->conn_work);
340 } else if (status_code != WLAN_STATUS_SUCCESS) {
341 __cfg80211_connect_result(wdev->netdev, mgmt->bssid,
343 status_code, false, NULL);
344 } else if (wdev->conn->state == CFG80211_CONN_AUTHENTICATING) {
345 wdev->conn->state = CFG80211_CONN_ASSOCIATE_NEXT;
346 schedule_work(&rdev->conn_work);
350 bool cfg80211_sme_rx_assoc_resp(struct wireless_dev *wdev, u16 status)
352 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
357 if (status == WLAN_STATUS_SUCCESS) {
358 wdev->conn->state = CFG80211_CONN_CONNECTED;
362 if (wdev->conn->prev_bssid_valid) {
364 * Some stupid APs don't accept reassoc, so we
365 * need to fall back to trying regular assoc;
366 * return true so no event is sent to userspace.
368 wdev->conn->prev_bssid_valid = false;
369 wdev->conn->state = CFG80211_CONN_ASSOCIATE_NEXT;
370 schedule_work(&rdev->conn_work);
374 wdev->conn->state = CFG80211_CONN_DEAUTH;
375 schedule_work(&rdev->conn_work);
379 void cfg80211_sme_deauth(struct wireless_dev *wdev)
381 cfg80211_sme_free(wdev);
384 void cfg80211_sme_auth_timeout(struct wireless_dev *wdev)
386 cfg80211_sme_free(wdev);
389 void cfg80211_sme_disassoc(struct wireless_dev *wdev)
391 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
396 wdev->conn->state = CFG80211_CONN_DEAUTH;
397 schedule_work(&rdev->conn_work);
400 void cfg80211_sme_assoc_timeout(struct wireless_dev *wdev)
402 cfg80211_sme_disassoc(wdev);
405 static int cfg80211_sme_connect(struct wireless_dev *wdev,
406 struct cfg80211_connect_params *connect,
407 const u8 *prev_bssid)
409 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
410 struct cfg80211_bss *bss;
413 if (!rdev->ops->auth || !rdev->ops->assoc)
416 if (wdev->current_bss)
419 if (WARN_ON(wdev->conn))
422 wdev->conn = kzalloc(sizeof(*wdev->conn), GFP_KERNEL);
427 * Copy all parameters, and treat explicitly IEs, BSSID, SSID.
429 memcpy(&wdev->conn->params, connect, sizeof(*connect));
430 if (connect->bssid) {
431 wdev->conn->params.bssid = wdev->conn->bssid;
432 memcpy(wdev->conn->bssid, connect->bssid, ETH_ALEN);
436 wdev->conn->ie = kmemdup(connect->ie, connect->ie_len,
438 wdev->conn->params.ie = wdev->conn->ie;
439 if (!wdev->conn->ie) {
446 if (connect->auth_type == NL80211_AUTHTYPE_AUTOMATIC) {
447 wdev->conn->auto_auth = true;
448 /* start with open system ... should mostly work */
449 wdev->conn->params.auth_type =
450 NL80211_AUTHTYPE_OPEN_SYSTEM;
452 wdev->conn->auto_auth = false;
455 wdev->conn->params.ssid = wdev->ssid;
456 wdev->conn->params.ssid_len = connect->ssid_len;
458 /* see if we have the bss already */
459 bss = cfg80211_get_conn_bss(wdev);
462 memcpy(wdev->conn->prev_bssid, prev_bssid, ETH_ALEN);
463 wdev->conn->prev_bssid_valid = true;
466 /* we're good if we have a matching bss struct */
468 wdev->conn->state = CFG80211_CONN_AUTHENTICATE_NEXT;
469 err = cfg80211_conn_do_work(wdev);
470 cfg80211_put_bss(wdev->wiphy, bss);
472 /* otherwise we'll need to scan for the AP first */
473 err = cfg80211_conn_scan(wdev);
476 * If we can't scan right now, then we need to scan again
477 * after the current scan finished, since the parameters
478 * changed (unless we find a good AP anyway).
482 wdev->conn->state = CFG80211_CONN_SCAN_AGAIN;
487 cfg80211_sme_free(wdev);
492 static int cfg80211_sme_disconnect(struct wireless_dev *wdev, u16 reason)
494 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
500 if (!rdev->ops->deauth)
503 if (wdev->conn->state == CFG80211_CONN_SCANNING ||
504 wdev->conn->state == CFG80211_CONN_SCAN_AGAIN) {
509 /* wdev->conn->params.bssid must be set if > SCANNING */
510 err = cfg80211_mlme_deauth(rdev, wdev->netdev,
511 wdev->conn->params.bssid,
512 NULL, 0, reason, false);
514 cfg80211_sme_free(wdev);
519 * code shared for in-device and software SME
522 static bool cfg80211_is_all_idle(void)
524 struct cfg80211_registered_device *rdev;
525 struct wireless_dev *wdev;
526 bool is_all_idle = true;
529 * All devices must be idle as otherwise if you are actively
530 * scanning some new beacon hints could be learned and would
531 * count as new regulatory hints.
533 list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
534 list_for_each_entry(wdev, &rdev->wdev_list, list) {
536 if (wdev->conn || wdev->current_bss)
545 static void disconnect_work(struct work_struct *work)
548 if (cfg80211_is_all_idle())
549 regulatory_hint_disconnect();
553 static DECLARE_WORK(cfg80211_disconnect_work, disconnect_work);
557 * API calls for drivers implementing connect/disconnect and
561 /* This method must consume bss one way or another */
562 void __cfg80211_connect_result(struct net_device *dev, const u8 *bssid,
563 const u8 *req_ie, size_t req_ie_len,
564 const u8 *resp_ie, size_t resp_ie_len,
565 u16 status, bool wextev,
566 struct cfg80211_bss *bss)
568 struct wireless_dev *wdev = dev->ieee80211_ptr;
569 const u8 *country_ie;
570 #ifdef CONFIG_CFG80211_WEXT
571 union iwreq_data wrqu;
574 ASSERT_WDEV_LOCK(wdev);
576 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION &&
577 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)) {
578 cfg80211_put_bss(wdev->wiphy, bss);
582 nl80211_send_connect_result(wiphy_to_dev(wdev->wiphy), dev,
583 bssid, req_ie, req_ie_len,
584 resp_ie, resp_ie_len,
587 #ifdef CONFIG_CFG80211_WEXT
589 if (req_ie && status == WLAN_STATUS_SUCCESS) {
590 memset(&wrqu, 0, sizeof(wrqu));
591 wrqu.data.length = req_ie_len;
592 wireless_send_event(dev, IWEVASSOCREQIE, &wrqu, req_ie);
595 if (resp_ie && status == WLAN_STATUS_SUCCESS) {
596 memset(&wrqu, 0, sizeof(wrqu));
597 wrqu.data.length = resp_ie_len;
598 wireless_send_event(dev, IWEVASSOCRESPIE, &wrqu, resp_ie);
601 memset(&wrqu, 0, sizeof(wrqu));
602 wrqu.ap_addr.sa_family = ARPHRD_ETHER;
603 if (bssid && status == WLAN_STATUS_SUCCESS) {
604 memcpy(wrqu.ap_addr.sa_data, bssid, ETH_ALEN);
605 memcpy(wdev->wext.prev_bssid, bssid, ETH_ALEN);
606 wdev->wext.prev_bssid_valid = true;
608 wireless_send_event(dev, SIOCGIWAP, &wrqu, NULL);
612 if (wdev->current_bss) {
613 cfg80211_unhold_bss(wdev->current_bss);
614 cfg80211_put_bss(wdev->wiphy, &wdev->current_bss->pub);
615 wdev->current_bss = NULL;
618 if (status != WLAN_STATUS_SUCCESS) {
619 kfree(wdev->connect_keys);
620 wdev->connect_keys = NULL;
623 cfg80211_unhold_bss(bss_from_pub(bss));
624 cfg80211_put_bss(wdev->wiphy, bss);
630 WARN_ON_ONCE(!wiphy_to_dev(wdev->wiphy)->ops->connect);
631 bss = cfg80211_get_bss(wdev->wiphy, NULL, bssid,
632 wdev->ssid, wdev->ssid_len,
634 WLAN_CAPABILITY_ESS);
637 cfg80211_hold_bss(bss_from_pub(bss));
640 wdev->current_bss = bss_from_pub(bss);
642 cfg80211_upload_connect_keys(wdev);
645 country_ie = ieee80211_bss_get_ie(bss, WLAN_EID_COUNTRY);
651 country_ie = kmemdup(country_ie, 2 + country_ie[1], GFP_ATOMIC);
658 * ieee80211_bss_get_ie() ensures we can access:
659 * - country_ie + 2, the start of the country ie data, and
660 * - and country_ie[1] which is the IE length
662 regulatory_hint_11d(wdev->wiphy, bss->channel->band,
663 country_ie + 2, country_ie[1]);
667 void cfg80211_connect_result(struct net_device *dev, const u8 *bssid,
668 const u8 *req_ie, size_t req_ie_len,
669 const u8 *resp_ie, size_t resp_ie_len,
670 u16 status, gfp_t gfp)
672 struct wireless_dev *wdev = dev->ieee80211_ptr;
673 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
674 struct cfg80211_event *ev;
677 ev = kzalloc(sizeof(*ev) + req_ie_len + resp_ie_len, gfp);
681 ev->type = EVENT_CONNECT_RESULT;
683 memcpy(ev->cr.bssid, bssid, ETH_ALEN);
685 ev->cr.req_ie = ((u8 *)ev) + sizeof(*ev);
686 ev->cr.req_ie_len = req_ie_len;
687 memcpy((void *)ev->cr.req_ie, req_ie, req_ie_len);
690 ev->cr.resp_ie = ((u8 *)ev) + sizeof(*ev) + req_ie_len;
691 ev->cr.resp_ie_len = resp_ie_len;
692 memcpy((void *)ev->cr.resp_ie, resp_ie, resp_ie_len);
694 ev->cr.status = status;
696 spin_lock_irqsave(&wdev->event_lock, flags);
697 list_add_tail(&ev->list, &wdev->event_list);
698 spin_unlock_irqrestore(&wdev->event_lock, flags);
699 queue_work(cfg80211_wq, &rdev->event_work);
701 EXPORT_SYMBOL(cfg80211_connect_result);
703 /* Consumes bss object one way or another */
704 void __cfg80211_roamed(struct wireless_dev *wdev,
705 struct cfg80211_bss *bss,
706 const u8 *req_ie, size_t req_ie_len,
707 const u8 *resp_ie, size_t resp_ie_len)
709 #ifdef CONFIG_CFG80211_WEXT
710 union iwreq_data wrqu;
712 ASSERT_WDEV_LOCK(wdev);
714 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION &&
715 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT))
718 if (WARN_ON(!wdev->current_bss))
721 cfg80211_unhold_bss(wdev->current_bss);
722 cfg80211_put_bss(wdev->wiphy, &wdev->current_bss->pub);
723 wdev->current_bss = NULL;
725 cfg80211_hold_bss(bss_from_pub(bss));
726 wdev->current_bss = bss_from_pub(bss);
728 nl80211_send_roamed(wiphy_to_dev(wdev->wiphy), wdev->netdev, bss->bssid,
729 req_ie, req_ie_len, resp_ie, resp_ie_len,
732 #ifdef CONFIG_CFG80211_WEXT
734 memset(&wrqu, 0, sizeof(wrqu));
735 wrqu.data.length = req_ie_len;
736 wireless_send_event(wdev->netdev, IWEVASSOCREQIE,
741 memset(&wrqu, 0, sizeof(wrqu));
742 wrqu.data.length = resp_ie_len;
743 wireless_send_event(wdev->netdev, IWEVASSOCRESPIE,
747 memset(&wrqu, 0, sizeof(wrqu));
748 wrqu.ap_addr.sa_family = ARPHRD_ETHER;
749 memcpy(wrqu.ap_addr.sa_data, bss->bssid, ETH_ALEN);
750 memcpy(wdev->wext.prev_bssid, bss->bssid, ETH_ALEN);
751 wdev->wext.prev_bssid_valid = true;
752 wireless_send_event(wdev->netdev, SIOCGIWAP, &wrqu, NULL);
757 cfg80211_put_bss(wdev->wiphy, bss);
760 void cfg80211_roamed(struct net_device *dev,
761 struct ieee80211_channel *channel,
763 const u8 *req_ie, size_t req_ie_len,
764 const u8 *resp_ie, size_t resp_ie_len, gfp_t gfp)
766 struct wireless_dev *wdev = dev->ieee80211_ptr;
767 struct cfg80211_bss *bss;
769 bss = cfg80211_get_bss(wdev->wiphy, channel, bssid, wdev->ssid,
770 wdev->ssid_len, WLAN_CAPABILITY_ESS,
771 WLAN_CAPABILITY_ESS);
775 cfg80211_roamed_bss(dev, bss, req_ie, req_ie_len, resp_ie,
778 EXPORT_SYMBOL(cfg80211_roamed);
780 /* Consumes bss object one way or another */
781 void cfg80211_roamed_bss(struct net_device *dev,
782 struct cfg80211_bss *bss, const u8 *req_ie,
783 size_t req_ie_len, const u8 *resp_ie,
784 size_t resp_ie_len, gfp_t gfp)
786 struct wireless_dev *wdev = dev->ieee80211_ptr;
787 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
788 struct cfg80211_event *ev;
794 ev = kzalloc(sizeof(*ev) + req_ie_len + resp_ie_len, gfp);
796 cfg80211_put_bss(wdev->wiphy, bss);
800 ev->type = EVENT_ROAMED;
801 ev->rm.req_ie = ((u8 *)ev) + sizeof(*ev);
802 ev->rm.req_ie_len = req_ie_len;
803 memcpy((void *)ev->rm.req_ie, req_ie, req_ie_len);
804 ev->rm.resp_ie = ((u8 *)ev) + sizeof(*ev) + req_ie_len;
805 ev->rm.resp_ie_len = resp_ie_len;
806 memcpy((void *)ev->rm.resp_ie, resp_ie, resp_ie_len);
809 spin_lock_irqsave(&wdev->event_lock, flags);
810 list_add_tail(&ev->list, &wdev->event_list);
811 spin_unlock_irqrestore(&wdev->event_lock, flags);
812 queue_work(cfg80211_wq, &rdev->event_work);
814 EXPORT_SYMBOL(cfg80211_roamed_bss);
816 void __cfg80211_disconnected(struct net_device *dev, const u8 *ie,
817 size_t ie_len, u16 reason, bool from_ap)
819 struct wireless_dev *wdev = dev->ieee80211_ptr;
820 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
822 #ifdef CONFIG_CFG80211_WEXT
823 union iwreq_data wrqu;
826 ASSERT_WDEV_LOCK(wdev);
828 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION &&
829 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT))
832 if (wdev->current_bss) {
833 cfg80211_unhold_bss(wdev->current_bss);
834 cfg80211_put_bss(wdev->wiphy, &wdev->current_bss->pub);
837 wdev->current_bss = NULL;
840 nl80211_send_disconnected(rdev, dev, reason, ie, ie_len, from_ap);
843 * Delete all the keys ... pairwise keys can't really
844 * exist any more anyway, but default keys might.
846 if (rdev->ops->del_key)
847 for (i = 0; i < 6; i++)
848 rdev_del_key(rdev, dev, i, false, NULL);
850 #ifdef CONFIG_CFG80211_WEXT
851 memset(&wrqu, 0, sizeof(wrqu));
852 wrqu.ap_addr.sa_family = ARPHRD_ETHER;
853 wireless_send_event(dev, SIOCGIWAP, &wrqu, NULL);
854 wdev->wext.connect.ssid_len = 0;
857 schedule_work(&cfg80211_disconnect_work);
860 void cfg80211_disconnected(struct net_device *dev, u16 reason,
861 u8 *ie, size_t ie_len, gfp_t gfp)
863 struct wireless_dev *wdev = dev->ieee80211_ptr;
864 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
865 struct cfg80211_event *ev;
868 ev = kzalloc(sizeof(*ev) + ie_len, gfp);
872 ev->type = EVENT_DISCONNECTED;
873 ev->dc.ie = ((u8 *)ev) + sizeof(*ev);
874 ev->dc.ie_len = ie_len;
875 memcpy((void *)ev->dc.ie, ie, ie_len);
876 ev->dc.reason = reason;
878 spin_lock_irqsave(&wdev->event_lock, flags);
879 list_add_tail(&ev->list, &wdev->event_list);
880 spin_unlock_irqrestore(&wdev->event_lock, flags);
881 queue_work(cfg80211_wq, &rdev->event_work);
883 EXPORT_SYMBOL(cfg80211_disconnected);
886 * API calls for nl80211/wext compatibility code
888 int cfg80211_connect(struct cfg80211_registered_device *rdev,
889 struct net_device *dev,
890 struct cfg80211_connect_params *connect,
891 struct cfg80211_cached_keys *connkeys,
892 const u8 *prev_bssid)
894 struct wireless_dev *wdev = dev->ieee80211_ptr;
897 ASSERT_WDEV_LOCK(wdev);
899 if (WARN_ON(wdev->connect_keys)) {
900 kfree(wdev->connect_keys);
901 wdev->connect_keys = NULL;
904 cfg80211_oper_and_ht_capa(&connect->ht_capa_mask,
905 rdev->wiphy.ht_capa_mod_mask);
907 if (connkeys && connkeys->def >= 0) {
912 cipher = connkeys->params[idx].cipher;
913 /* If given a WEP key we may need it for shared key auth */
914 if (cipher == WLAN_CIPHER_SUITE_WEP40 ||
915 cipher == WLAN_CIPHER_SUITE_WEP104) {
916 connect->key_idx = idx;
917 connect->key = connkeys->params[idx].key;
918 connect->key_len = connkeys->params[idx].key_len;
921 * If ciphers are not set (e.g. when going through
922 * iwconfig), we have to set them appropriately here.
924 if (connect->crypto.cipher_group == 0)
925 connect->crypto.cipher_group = cipher;
927 if (connect->crypto.n_ciphers_pairwise == 0) {
928 connect->crypto.n_ciphers_pairwise = 1;
929 connect->crypto.ciphers_pairwise[0] = cipher;
934 wdev->connect_keys = connkeys;
935 memcpy(wdev->ssid, connect->ssid, connect->ssid_len);
936 wdev->ssid_len = connect->ssid_len;
938 if (!rdev->ops->connect)
939 err = cfg80211_sme_connect(wdev, connect, prev_bssid);
941 err = rdev_connect(rdev, dev, connect);
944 wdev->connect_keys = NULL;
952 int cfg80211_disconnect(struct cfg80211_registered_device *rdev,
953 struct net_device *dev, u16 reason, bool wextev)
955 struct wireless_dev *wdev = dev->ieee80211_ptr;
958 ASSERT_WDEV_LOCK(wdev);
960 kfree(wdev->connect_keys);
961 wdev->connect_keys = NULL;
964 err = cfg80211_sme_disconnect(wdev, reason);
965 } else if (!rdev->ops->disconnect) {
966 cfg80211_mlme_down(rdev, dev);
969 err = rdev_disconnect(rdev, dev, reason);