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_AUTH_FAILED,
38 CFG80211_CONN_ASSOCIATE_NEXT,
39 CFG80211_CONN_ASSOCIATING,
40 CFG80211_CONN_ASSOC_FAILED,
42 CFG80211_CONN_ABANDON,
43 CFG80211_CONN_CONNECTED,
45 u8 bssid[ETH_ALEN], prev_bssid[ETH_ALEN];
48 bool auto_auth, prev_bssid_valid;
51 static void cfg80211_sme_free(struct wireless_dev *wdev)
56 kfree(wdev->conn->ie);
61 static int cfg80211_conn_scan(struct wireless_dev *wdev)
63 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
64 struct cfg80211_scan_request *request;
68 ASSERT_WDEV_LOCK(wdev);
70 if (rdev->scan_req || rdev->scan_msg)
73 if (wdev->conn->params.channel)
76 n_channels = ieee80211_get_num_supported_channels(wdev->wiphy);
78 request = kzalloc(sizeof(*request) + sizeof(request->ssids[0]) +
79 sizeof(request->channels[0]) * n_channels,
84 if (wdev->conn->params.channel) {
85 enum nl80211_band band = wdev->conn->params.channel->band;
86 struct ieee80211_supported_band *sband =
87 wdev->wiphy->bands[band];
93 request->channels[0] = wdev->conn->params.channel;
94 request->rates[band] = (1 << sband->n_bitrates) - 1;
97 enum nl80211_band band;
98 struct ieee80211_supported_band *bands;
99 struct ieee80211_channel *channel;
101 for (band = 0; band < NUM_NL80211_BANDS; band++) {
102 bands = wdev->wiphy->bands[band];
105 for (j = 0; j < bands->n_channels; j++) {
106 channel = &bands->channels[j];
107 if (channel->flags & IEEE80211_CHAN_DISABLED)
109 request->channels[i++] = channel;
111 request->rates[band] = (1 << bands->n_bitrates) - 1;
115 request->n_channels = n_channels;
116 request->ssids = (void *)&request->channels[n_channels];
117 request->n_ssids = 1;
119 memcpy(request->ssids[0].ssid, wdev->conn->params.ssid,
120 wdev->conn->params.ssid_len);
121 request->ssids[0].ssid_len = wdev->conn->params.ssid_len;
123 eth_broadcast_addr(request->bssid);
125 request->wdev = wdev;
126 request->wiphy = &rdev->wiphy;
127 request->scan_start = jiffies;
129 rdev->scan_req = request;
131 err = rdev_scan(rdev, request);
133 wdev->conn->state = CFG80211_CONN_SCANNING;
134 nl80211_send_scan_start(rdev, wdev);
135 dev_hold(wdev->netdev);
137 rdev->scan_req = NULL;
143 static int cfg80211_conn_do_work(struct wireless_dev *wdev)
145 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
146 struct cfg80211_connect_params *params;
147 struct cfg80211_assoc_request req = {};
150 ASSERT_WDEV_LOCK(wdev);
155 params = &wdev->conn->params;
157 switch (wdev->conn->state) {
158 case CFG80211_CONN_SCANNING:
159 /* didn't find it during scan ... */
161 case CFG80211_CONN_SCAN_AGAIN:
162 return cfg80211_conn_scan(wdev);
163 case CFG80211_CONN_AUTHENTICATE_NEXT:
164 if (WARN_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,
173 params->key_idx, NULL, 0);
174 case CFG80211_CONN_AUTH_FAILED:
176 case CFG80211_CONN_ASSOCIATE_NEXT:
177 if (WARN_ON(!rdev->ops->assoc))
179 wdev->conn->state = CFG80211_CONN_ASSOCIATING;
180 if (wdev->conn->prev_bssid_valid)
181 req.prev_bssid = wdev->conn->prev_bssid;
183 req.ie_len = params->ie_len;
184 req.use_mfp = params->mfp != NL80211_MFP_NO;
185 req.crypto = params->crypto;
186 req.flags = params->flags;
187 req.ht_capa = params->ht_capa;
188 req.ht_capa_mask = params->ht_capa_mask;
189 req.vht_capa = params->vht_capa;
190 req.vht_capa_mask = params->vht_capa_mask;
192 err = cfg80211_mlme_assoc(rdev, wdev->netdev, params->channel,
193 params->bssid, params->ssid,
194 params->ssid_len, &req);
196 cfg80211_mlme_deauth(rdev, wdev->netdev, params->bssid,
198 WLAN_REASON_DEAUTH_LEAVING,
201 case CFG80211_CONN_ASSOC_FAILED:
202 cfg80211_mlme_deauth(rdev, wdev->netdev, params->bssid,
204 WLAN_REASON_DEAUTH_LEAVING, false);
206 case CFG80211_CONN_DEAUTH:
207 cfg80211_mlme_deauth(rdev, wdev->netdev, params->bssid,
209 WLAN_REASON_DEAUTH_LEAVING, false);
211 case CFG80211_CONN_ABANDON:
212 /* free directly, disconnected event already sent */
213 cfg80211_sme_free(wdev);
220 void cfg80211_conn_work(struct work_struct *work)
222 struct cfg80211_registered_device *rdev =
223 container_of(work, struct cfg80211_registered_device, conn_work);
224 struct wireless_dev *wdev;
225 u8 bssid_buf[ETH_ALEN], *bssid = NULL;
229 list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
234 if (!netif_running(wdev->netdev)) {
239 wdev->conn->state == CFG80211_CONN_CONNECTED) {
243 if (wdev->conn->params.bssid) {
244 memcpy(bssid_buf, wdev->conn->params.bssid, ETH_ALEN);
247 if (cfg80211_conn_do_work(wdev)) {
248 __cfg80211_connect_result(
250 NULL, 0, NULL, 0, -1, false, NULL);
258 /* Returned bss is reference counted and must be cleaned up appropriately. */
259 static struct cfg80211_bss *cfg80211_get_conn_bss(struct wireless_dev *wdev)
261 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
262 struct cfg80211_bss *bss;
264 ASSERT_WDEV_LOCK(wdev);
266 bss = cfg80211_get_bss(wdev->wiphy, wdev->conn->params.channel,
267 wdev->conn->params.bssid,
268 wdev->conn->params.ssid,
269 wdev->conn->params.ssid_len,
271 IEEE80211_PRIVACY(wdev->conn->params.privacy));
275 memcpy(wdev->conn->bssid, bss->bssid, ETH_ALEN);
276 wdev->conn->params.bssid = wdev->conn->bssid;
277 wdev->conn->params.channel = bss->channel;
278 wdev->conn->state = CFG80211_CONN_AUTHENTICATE_NEXT;
279 schedule_work(&rdev->conn_work);
284 static void __cfg80211_sme_scan_done(struct net_device *dev)
286 struct wireless_dev *wdev = dev->ieee80211_ptr;
287 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
288 struct cfg80211_bss *bss;
290 ASSERT_WDEV_LOCK(wdev);
295 if (wdev->conn->state != CFG80211_CONN_SCANNING &&
296 wdev->conn->state != CFG80211_CONN_SCAN_AGAIN)
299 bss = cfg80211_get_conn_bss(wdev);
301 cfg80211_put_bss(&rdev->wiphy, bss);
303 schedule_work(&rdev->conn_work);
306 void cfg80211_sme_scan_done(struct net_device *dev)
308 struct wireless_dev *wdev = dev->ieee80211_ptr;
311 __cfg80211_sme_scan_done(dev);
315 void cfg80211_sme_rx_auth(struct wireless_dev *wdev, const u8 *buf, size_t len)
317 struct wiphy *wiphy = wdev->wiphy;
318 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
319 struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)buf;
320 u16 status_code = le16_to_cpu(mgmt->u.auth.status_code);
322 ASSERT_WDEV_LOCK(wdev);
324 if (!wdev->conn || wdev->conn->state == CFG80211_CONN_CONNECTED)
327 if (status_code == WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG &&
328 wdev->conn->auto_auth &&
329 wdev->conn->params.auth_type != NL80211_AUTHTYPE_NETWORK_EAP) {
330 /* select automatically between only open, shared, leap */
331 switch (wdev->conn->params.auth_type) {
332 case NL80211_AUTHTYPE_OPEN_SYSTEM:
333 if (wdev->connect_keys)
334 wdev->conn->params.auth_type =
335 NL80211_AUTHTYPE_SHARED_KEY;
337 wdev->conn->params.auth_type =
338 NL80211_AUTHTYPE_NETWORK_EAP;
340 case NL80211_AUTHTYPE_SHARED_KEY:
341 wdev->conn->params.auth_type =
342 NL80211_AUTHTYPE_NETWORK_EAP;
346 wdev->conn->params.auth_type =
347 NL80211_AUTHTYPE_OPEN_SYSTEM;
350 wdev->conn->state = CFG80211_CONN_AUTHENTICATE_NEXT;
351 schedule_work(&rdev->conn_work);
352 } else if (status_code != WLAN_STATUS_SUCCESS) {
353 __cfg80211_connect_result(wdev->netdev, mgmt->bssid,
355 status_code, false, NULL);
356 } else if (wdev->conn->state == CFG80211_CONN_AUTHENTICATING) {
357 wdev->conn->state = CFG80211_CONN_ASSOCIATE_NEXT;
358 schedule_work(&rdev->conn_work);
362 bool cfg80211_sme_rx_assoc_resp(struct wireless_dev *wdev, u16 status)
364 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
369 if (status == WLAN_STATUS_SUCCESS) {
370 wdev->conn->state = CFG80211_CONN_CONNECTED;
374 if (wdev->conn->prev_bssid_valid) {
376 * Some stupid APs don't accept reassoc, so we
377 * need to fall back to trying regular assoc;
378 * return true so no event is sent to userspace.
380 wdev->conn->prev_bssid_valid = false;
381 wdev->conn->state = CFG80211_CONN_ASSOCIATE_NEXT;
382 schedule_work(&rdev->conn_work);
386 wdev->conn->state = CFG80211_CONN_ASSOC_FAILED;
387 schedule_work(&rdev->conn_work);
391 void cfg80211_sme_deauth(struct wireless_dev *wdev)
393 cfg80211_sme_free(wdev);
396 void cfg80211_sme_auth_timeout(struct wireless_dev *wdev)
398 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
403 wdev->conn->state = CFG80211_CONN_AUTH_FAILED;
404 schedule_work(&rdev->conn_work);
407 void cfg80211_sme_disassoc(struct wireless_dev *wdev)
409 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
414 wdev->conn->state = CFG80211_CONN_DEAUTH;
415 schedule_work(&rdev->conn_work);
418 void cfg80211_sme_assoc_timeout(struct wireless_dev *wdev)
420 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
425 wdev->conn->state = CFG80211_CONN_ASSOC_FAILED;
426 schedule_work(&rdev->conn_work);
429 void cfg80211_sme_abandon_assoc(struct wireless_dev *wdev)
431 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
436 wdev->conn->state = CFG80211_CONN_ABANDON;
437 schedule_work(&rdev->conn_work);
440 static int cfg80211_sme_get_conn_ies(struct wireless_dev *wdev,
441 const u8 *ies, size_t ies_len,
442 const u8 **out_ies, size_t *out_ies_len)
444 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
448 if (!rdev->wiphy.extended_capabilities_len ||
449 (ies && cfg80211_find_ie(WLAN_EID_EXT_CAPABILITY, ies, ies_len))) {
450 *out_ies = kmemdup(ies, ies_len, GFP_KERNEL);
453 *out_ies_len = ies_len;
457 buf = kmalloc(ies_len + rdev->wiphy.extended_capabilities_len + 2,
463 static const u8 before_extcapa[] = {
464 /* not listing IEs expected to be created by driver */
467 WLAN_EID_RRM_ENABLED_CAPABILITIES,
468 WLAN_EID_MOBILITY_DOMAIN,
469 WLAN_EID_SUPPORTED_REGULATORY_CLASSES,
470 WLAN_EID_BSS_COEX_2040,
473 offs = ieee80211_ie_split(ies, ies_len, before_extcapa,
474 ARRAY_SIZE(before_extcapa), 0);
475 memcpy(buf, ies, offs);
476 /* leave a whole for extended capabilities IE */
477 memcpy(buf + offs + rdev->wiphy.extended_capabilities_len + 2,
478 ies + offs, ies_len - offs);
483 /* place extended capabilities IE (with only driver capabilities) */
484 buf[offs] = WLAN_EID_EXT_CAPABILITY;
485 buf[offs + 1] = rdev->wiphy.extended_capabilities_len;
486 memcpy(buf + offs + 2,
487 rdev->wiphy.extended_capabilities,
488 rdev->wiphy.extended_capabilities_len);
491 *out_ies_len = ies_len + rdev->wiphy.extended_capabilities_len + 2;
496 static int cfg80211_sme_connect(struct wireless_dev *wdev,
497 struct cfg80211_connect_params *connect,
498 const u8 *prev_bssid)
500 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
501 struct cfg80211_bss *bss;
504 if (!rdev->ops->auth || !rdev->ops->assoc)
507 if (wdev->current_bss) {
511 !ether_addr_equal(prev_bssid, wdev->current_bss->pub.bssid))
513 cfg80211_unhold_bss(wdev->current_bss);
514 cfg80211_put_bss(wdev->wiphy, &wdev->current_bss->pub);
515 wdev->current_bss = NULL;
517 cfg80211_sme_free(wdev);
520 if (WARN_ON(wdev->conn))
523 wdev->conn = kzalloc(sizeof(*wdev->conn), GFP_KERNEL);
528 * Copy all parameters, and treat explicitly IEs, BSSID, SSID.
530 memcpy(&wdev->conn->params, connect, sizeof(*connect));
531 if (connect->bssid) {
532 wdev->conn->params.bssid = wdev->conn->bssid;
533 memcpy(wdev->conn->bssid, connect->bssid, ETH_ALEN);
536 if (cfg80211_sme_get_conn_ies(wdev, connect->ie, connect->ie_len,
538 &wdev->conn->params.ie_len)) {
543 wdev->conn->params.ie = wdev->conn->ie;
545 if (connect->auth_type == NL80211_AUTHTYPE_AUTOMATIC) {
546 wdev->conn->auto_auth = true;
547 /* start with open system ... should mostly work */
548 wdev->conn->params.auth_type =
549 NL80211_AUTHTYPE_OPEN_SYSTEM;
551 wdev->conn->auto_auth = false;
554 wdev->conn->params.ssid = wdev->ssid;
555 wdev->conn->params.ssid_len = wdev->ssid_len;
557 /* see if we have the bss already */
558 bss = cfg80211_get_conn_bss(wdev);
561 memcpy(wdev->conn->prev_bssid, prev_bssid, ETH_ALEN);
562 wdev->conn->prev_bssid_valid = true;
565 /* we're good if we have a matching bss struct */
567 err = cfg80211_conn_do_work(wdev);
568 cfg80211_put_bss(wdev->wiphy, bss);
570 /* otherwise we'll need to scan for the AP first */
571 err = cfg80211_conn_scan(wdev);
574 * If we can't scan right now, then we need to scan again
575 * after the current scan finished, since the parameters
576 * changed (unless we find a good AP anyway).
580 wdev->conn->state = CFG80211_CONN_SCAN_AGAIN;
585 cfg80211_sme_free(wdev);
590 static int cfg80211_sme_disconnect(struct wireless_dev *wdev, u16 reason)
592 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
598 if (!rdev->ops->deauth)
601 if (wdev->conn->state == CFG80211_CONN_SCANNING ||
602 wdev->conn->state == CFG80211_CONN_SCAN_AGAIN) {
607 /* wdev->conn->params.bssid must be set if > SCANNING */
608 err = cfg80211_mlme_deauth(rdev, wdev->netdev,
609 wdev->conn->params.bssid,
610 NULL, 0, reason, false);
612 cfg80211_sme_free(wdev);
617 * code shared for in-device and software SME
620 static bool cfg80211_is_all_idle(void)
622 struct cfg80211_registered_device *rdev;
623 struct wireless_dev *wdev;
624 bool is_all_idle = true;
627 * All devices must be idle as otherwise if you are actively
628 * scanning some new beacon hints could be learned and would
629 * count as new regulatory hints.
631 list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
632 list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
634 if (wdev->conn || wdev->current_bss)
643 static void disconnect_work(struct work_struct *work)
646 if (cfg80211_is_all_idle())
647 regulatory_hint_disconnect();
651 static DECLARE_WORK(cfg80211_disconnect_work, disconnect_work);
655 * API calls for drivers implementing connect/disconnect and
659 /* This method must consume bss one way or another */
660 void __cfg80211_connect_result(struct net_device *dev, const u8 *bssid,
661 const u8 *req_ie, size_t req_ie_len,
662 const u8 *resp_ie, size_t resp_ie_len,
663 int status, bool wextev,
664 struct cfg80211_bss *bss)
666 struct wireless_dev *wdev = dev->ieee80211_ptr;
667 const u8 *country_ie;
668 #ifdef CONFIG_CFG80211_WEXT
669 union iwreq_data wrqu;
672 ASSERT_WDEV_LOCK(wdev);
674 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION &&
675 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)) {
676 cfg80211_put_bss(wdev->wiphy, bss);
680 nl80211_send_connect_result(wiphy_to_rdev(wdev->wiphy), dev,
681 bssid, req_ie, req_ie_len,
682 resp_ie, resp_ie_len,
685 #ifdef CONFIG_CFG80211_WEXT
687 if (req_ie && status == WLAN_STATUS_SUCCESS) {
688 memset(&wrqu, 0, sizeof(wrqu));
689 wrqu.data.length = req_ie_len;
690 wireless_send_event(dev, IWEVASSOCREQIE, &wrqu, req_ie);
693 if (resp_ie && status == WLAN_STATUS_SUCCESS) {
694 memset(&wrqu, 0, sizeof(wrqu));
695 wrqu.data.length = resp_ie_len;
696 wireless_send_event(dev, IWEVASSOCRESPIE, &wrqu, resp_ie);
699 memset(&wrqu, 0, sizeof(wrqu));
700 wrqu.ap_addr.sa_family = ARPHRD_ETHER;
701 if (bssid && status == WLAN_STATUS_SUCCESS) {
702 memcpy(wrqu.ap_addr.sa_data, bssid, ETH_ALEN);
703 memcpy(wdev->wext.prev_bssid, bssid, ETH_ALEN);
704 wdev->wext.prev_bssid_valid = true;
706 wireless_send_event(dev, SIOCGIWAP, &wrqu, NULL);
710 if (!bss && (status == WLAN_STATUS_SUCCESS)) {
711 WARN_ON_ONCE(!wiphy_to_rdev(wdev->wiphy)->ops->connect);
712 bss = cfg80211_get_bss(wdev->wiphy, NULL, bssid,
713 wdev->ssid, wdev->ssid_len,
715 IEEE80211_PRIVACY_ANY);
717 cfg80211_hold_bss(bss_from_pub(bss));
720 if (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;
726 if (status != WLAN_STATUS_SUCCESS) {
727 kzfree(wdev->connect_keys);
728 wdev->connect_keys = NULL;
731 cfg80211_unhold_bss(bss_from_pub(bss));
732 cfg80211_put_bss(wdev->wiphy, bss);
734 cfg80211_sme_free(wdev);
741 wdev->current_bss = bss_from_pub(bss);
743 if (!(wdev->wiphy->flags & WIPHY_FLAG_HAS_STATIC_WEP))
744 cfg80211_upload_connect_keys(wdev);
747 country_ie = ieee80211_bss_get_ie(bss, WLAN_EID_COUNTRY);
753 country_ie = kmemdup(country_ie, 2 + country_ie[1], GFP_ATOMIC);
760 * ieee80211_bss_get_ie() ensures we can access:
761 * - country_ie + 2, the start of the country ie data, and
762 * - and country_ie[1] which is the IE length
764 regulatory_hint_country_ie(wdev->wiphy, bss->channel->band,
765 country_ie + 2, country_ie[1]);
769 /* Consumes bss object one way or another */
770 void cfg80211_connect_bss(struct net_device *dev, const u8 *bssid,
771 struct cfg80211_bss *bss, const u8 *req_ie,
772 size_t req_ie_len, const u8 *resp_ie,
773 size_t resp_ie_len, int status, gfp_t gfp)
775 struct wireless_dev *wdev = dev->ieee80211_ptr;
776 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
777 struct cfg80211_event *ev;
781 /* Make sure the bss entry provided by the driver is valid. */
782 struct cfg80211_internal_bss *ibss = bss_from_pub(bss);
784 if (WARN_ON(list_empty(&ibss->list))) {
785 cfg80211_put_bss(wdev->wiphy, bss);
790 ev = kzalloc(sizeof(*ev) + req_ie_len + resp_ie_len, gfp);
792 cfg80211_put_bss(wdev->wiphy, bss);
796 ev->type = EVENT_CONNECT_RESULT;
798 memcpy(ev->cr.bssid, bssid, ETH_ALEN);
800 ev->cr.req_ie = ((u8 *)ev) + sizeof(*ev);
801 ev->cr.req_ie_len = req_ie_len;
802 memcpy((void *)ev->cr.req_ie, req_ie, req_ie_len);
805 ev->cr.resp_ie = ((u8 *)ev) + sizeof(*ev) + req_ie_len;
806 ev->cr.resp_ie_len = resp_ie_len;
807 memcpy((void *)ev->cr.resp_ie, resp_ie, resp_ie_len);
810 cfg80211_hold_bss(bss_from_pub(bss));
812 ev->cr.status = status;
814 spin_lock_irqsave(&wdev->event_lock, flags);
815 list_add_tail(&ev->list, &wdev->event_list);
816 spin_unlock_irqrestore(&wdev->event_lock, flags);
817 queue_work(cfg80211_wq, &rdev->event_work);
819 EXPORT_SYMBOL(cfg80211_connect_bss);
821 /* Consumes bss object one way or another */
822 void __cfg80211_roamed(struct wireless_dev *wdev,
823 struct cfg80211_bss *bss,
824 const u8 *req_ie, size_t req_ie_len,
825 const u8 *resp_ie, size_t resp_ie_len)
827 #ifdef CONFIG_CFG80211_WEXT
828 union iwreq_data wrqu;
830 ASSERT_WDEV_LOCK(wdev);
832 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION &&
833 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT))
836 if (WARN_ON(!wdev->current_bss))
839 cfg80211_unhold_bss(wdev->current_bss);
840 cfg80211_put_bss(wdev->wiphy, &wdev->current_bss->pub);
841 wdev->current_bss = NULL;
843 cfg80211_hold_bss(bss_from_pub(bss));
844 wdev->current_bss = bss_from_pub(bss);
846 nl80211_send_roamed(wiphy_to_rdev(wdev->wiphy),
847 wdev->netdev, bss->bssid,
848 req_ie, req_ie_len, resp_ie, resp_ie_len,
851 #ifdef CONFIG_CFG80211_WEXT
853 memset(&wrqu, 0, sizeof(wrqu));
854 wrqu.data.length = req_ie_len;
855 wireless_send_event(wdev->netdev, IWEVASSOCREQIE,
860 memset(&wrqu, 0, sizeof(wrqu));
861 wrqu.data.length = resp_ie_len;
862 wireless_send_event(wdev->netdev, IWEVASSOCRESPIE,
866 memset(&wrqu, 0, sizeof(wrqu));
867 wrqu.ap_addr.sa_family = ARPHRD_ETHER;
868 memcpy(wrqu.ap_addr.sa_data, bss->bssid, ETH_ALEN);
869 memcpy(wdev->wext.prev_bssid, bss->bssid, ETH_ALEN);
870 wdev->wext.prev_bssid_valid = true;
871 wireless_send_event(wdev->netdev, SIOCGIWAP, &wrqu, NULL);
876 cfg80211_put_bss(wdev->wiphy, bss);
879 void cfg80211_roamed(struct net_device *dev,
880 struct ieee80211_channel *channel,
882 const u8 *req_ie, size_t req_ie_len,
883 const u8 *resp_ie, size_t resp_ie_len, gfp_t gfp)
885 struct wireless_dev *wdev = dev->ieee80211_ptr;
886 struct cfg80211_bss *bss;
888 bss = cfg80211_get_bss(wdev->wiphy, channel, bssid, wdev->ssid,
890 wdev->conn_bss_type, IEEE80211_PRIVACY_ANY);
894 cfg80211_roamed_bss(dev, bss, req_ie, req_ie_len, resp_ie,
897 EXPORT_SYMBOL(cfg80211_roamed);
899 /* Consumes bss object one way or another */
900 void cfg80211_roamed_bss(struct net_device *dev,
901 struct cfg80211_bss *bss, const u8 *req_ie,
902 size_t req_ie_len, const u8 *resp_ie,
903 size_t resp_ie_len, gfp_t gfp)
905 struct wireless_dev *wdev = dev->ieee80211_ptr;
906 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
907 struct cfg80211_event *ev;
913 ev = kzalloc(sizeof(*ev) + req_ie_len + resp_ie_len, gfp);
915 cfg80211_put_bss(wdev->wiphy, bss);
919 ev->type = EVENT_ROAMED;
920 ev->rm.req_ie = ((u8 *)ev) + sizeof(*ev);
921 ev->rm.req_ie_len = req_ie_len;
922 memcpy((void *)ev->rm.req_ie, req_ie, req_ie_len);
923 ev->rm.resp_ie = ((u8 *)ev) + sizeof(*ev) + req_ie_len;
924 ev->rm.resp_ie_len = resp_ie_len;
925 memcpy((void *)ev->rm.resp_ie, resp_ie, resp_ie_len);
928 spin_lock_irqsave(&wdev->event_lock, flags);
929 list_add_tail(&ev->list, &wdev->event_list);
930 spin_unlock_irqrestore(&wdev->event_lock, flags);
931 queue_work(cfg80211_wq, &rdev->event_work);
933 EXPORT_SYMBOL(cfg80211_roamed_bss);
935 void __cfg80211_disconnected(struct net_device *dev, const u8 *ie,
936 size_t ie_len, u16 reason, bool from_ap)
938 struct wireless_dev *wdev = dev->ieee80211_ptr;
939 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
941 #ifdef CONFIG_CFG80211_WEXT
942 union iwreq_data wrqu;
945 ASSERT_WDEV_LOCK(wdev);
947 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION &&
948 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT))
951 if (wdev->current_bss) {
952 cfg80211_unhold_bss(wdev->current_bss);
953 cfg80211_put_bss(wdev->wiphy, &wdev->current_bss->pub);
956 wdev->current_bss = NULL;
959 nl80211_send_disconnected(rdev, dev, reason, ie, ie_len, from_ap);
961 /* stop critical protocol if supported */
962 if (rdev->ops->crit_proto_stop && rdev->crit_proto_nlportid) {
963 rdev->crit_proto_nlportid = 0;
964 rdev_crit_proto_stop(rdev, wdev);
968 * Delete all the keys ... pairwise keys can't really
969 * exist any more anyway, but default keys might.
971 if (rdev->ops->del_key)
972 for (i = 0; i < 6; i++)
973 rdev_del_key(rdev, dev, i, false, NULL);
975 rdev_set_qos_map(rdev, dev, NULL);
977 #ifdef CONFIG_CFG80211_WEXT
978 memset(&wrqu, 0, sizeof(wrqu));
979 wrqu.ap_addr.sa_family = ARPHRD_ETHER;
980 wireless_send_event(dev, SIOCGIWAP, &wrqu, NULL);
981 wdev->wext.connect.ssid_len = 0;
984 schedule_work(&cfg80211_disconnect_work);
987 void cfg80211_disconnected(struct net_device *dev, u16 reason,
988 const u8 *ie, size_t ie_len,
989 bool locally_generated, gfp_t gfp)
991 struct wireless_dev *wdev = dev->ieee80211_ptr;
992 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
993 struct cfg80211_event *ev;
996 ev = kzalloc(sizeof(*ev) + ie_len, gfp);
1000 ev->type = EVENT_DISCONNECTED;
1001 ev->dc.ie = ((u8 *)ev) + sizeof(*ev);
1002 ev->dc.ie_len = ie_len;
1003 memcpy((void *)ev->dc.ie, ie, ie_len);
1004 ev->dc.reason = reason;
1005 ev->dc.locally_generated = locally_generated;
1007 spin_lock_irqsave(&wdev->event_lock, flags);
1008 list_add_tail(&ev->list, &wdev->event_list);
1009 spin_unlock_irqrestore(&wdev->event_lock, flags);
1010 queue_work(cfg80211_wq, &rdev->event_work);
1012 EXPORT_SYMBOL(cfg80211_disconnected);
1015 * API calls for nl80211/wext compatibility code
1017 int cfg80211_connect(struct cfg80211_registered_device *rdev,
1018 struct net_device *dev,
1019 struct cfg80211_connect_params *connect,
1020 struct cfg80211_cached_keys *connkeys,
1021 const u8 *prev_bssid)
1023 struct wireless_dev *wdev = dev->ieee80211_ptr;
1026 ASSERT_WDEV_LOCK(wdev);
1028 if (WARN_ON(wdev->connect_keys)) {
1029 kzfree(wdev->connect_keys);
1030 wdev->connect_keys = NULL;
1033 cfg80211_oper_and_ht_capa(&connect->ht_capa_mask,
1034 rdev->wiphy.ht_capa_mod_mask);
1036 if (connkeys && connkeys->def >= 0) {
1040 idx = connkeys->def;
1041 cipher = connkeys->params[idx].cipher;
1042 /* If given a WEP key we may need it for shared key auth */
1043 if (cipher == WLAN_CIPHER_SUITE_WEP40 ||
1044 cipher == WLAN_CIPHER_SUITE_WEP104) {
1045 connect->key_idx = idx;
1046 connect->key = connkeys->params[idx].key;
1047 connect->key_len = connkeys->params[idx].key_len;
1050 * If ciphers are not set (e.g. when going through
1051 * iwconfig), we have to set them appropriately here.
1053 if (connect->crypto.cipher_group == 0)
1054 connect->crypto.cipher_group = cipher;
1056 if (connect->crypto.n_ciphers_pairwise == 0) {
1057 connect->crypto.n_ciphers_pairwise = 1;
1058 connect->crypto.ciphers_pairwise[0] = cipher;
1062 connect->crypto.wep_keys = connkeys->params;
1063 connect->crypto.wep_tx_key = connkeys->def;
1065 if (WARN_ON(connkeys))
1069 wdev->connect_keys = connkeys;
1070 memcpy(wdev->ssid, connect->ssid, connect->ssid_len);
1071 wdev->ssid_len = connect->ssid_len;
1073 wdev->conn_bss_type = connect->pbss ? IEEE80211_BSS_TYPE_PBSS :
1074 IEEE80211_BSS_TYPE_ESS;
1076 if (!rdev->ops->connect)
1077 err = cfg80211_sme_connect(wdev, connect, prev_bssid);
1079 err = rdev_connect(rdev, dev, connect);
1082 wdev->connect_keys = NULL;
1090 int cfg80211_disconnect(struct cfg80211_registered_device *rdev,
1091 struct net_device *dev, u16 reason, bool wextev)
1093 struct wireless_dev *wdev = dev->ieee80211_ptr;
1096 ASSERT_WDEV_LOCK(wdev);
1098 kzfree(wdev->connect_keys);
1099 wdev->connect_keys = NULL;
1102 err = cfg80211_sme_disconnect(wdev, reason);
1103 else if (!rdev->ops->disconnect)
1104 cfg80211_mlme_down(rdev, dev);
1105 else if (wdev->ssid_len)
1106 err = rdev_disconnect(rdev, dev, reason);