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) {
508 cfg80211_unhold_bss(wdev->current_bss);
509 cfg80211_put_bss(wdev->wiphy, &wdev->current_bss->pub);
510 wdev->current_bss = NULL;
512 cfg80211_sme_free(wdev);
518 wdev->conn = kzalloc(sizeof(*wdev->conn), GFP_KERNEL);
523 * Copy all parameters, and treat explicitly IEs, BSSID, SSID.
525 memcpy(&wdev->conn->params, connect, sizeof(*connect));
526 if (connect->bssid) {
527 wdev->conn->params.bssid = wdev->conn->bssid;
528 memcpy(wdev->conn->bssid, connect->bssid, ETH_ALEN);
531 if (cfg80211_sme_get_conn_ies(wdev, connect->ie, connect->ie_len,
533 &wdev->conn->params.ie_len)) {
538 wdev->conn->params.ie = wdev->conn->ie;
540 if (connect->auth_type == NL80211_AUTHTYPE_AUTOMATIC) {
541 wdev->conn->auto_auth = true;
542 /* start with open system ... should mostly work */
543 wdev->conn->params.auth_type =
544 NL80211_AUTHTYPE_OPEN_SYSTEM;
546 wdev->conn->auto_auth = false;
549 wdev->conn->params.ssid = wdev->ssid;
550 wdev->conn->params.ssid_len = wdev->ssid_len;
552 /* see if we have the bss already */
553 bss = cfg80211_get_conn_bss(wdev);
556 memcpy(wdev->conn->prev_bssid, prev_bssid, ETH_ALEN);
557 wdev->conn->prev_bssid_valid = true;
560 /* we're good if we have a matching bss struct */
562 err = cfg80211_conn_do_work(wdev);
563 cfg80211_put_bss(wdev->wiphy, bss);
565 /* otherwise we'll need to scan for the AP first */
566 err = cfg80211_conn_scan(wdev);
569 * If we can't scan right now, then we need to scan again
570 * after the current scan finished, since the parameters
571 * changed (unless we find a good AP anyway).
575 wdev->conn->state = CFG80211_CONN_SCAN_AGAIN;
580 cfg80211_sme_free(wdev);
585 static int cfg80211_sme_disconnect(struct wireless_dev *wdev, u16 reason)
587 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
593 if (!rdev->ops->deauth)
596 if (wdev->conn->state == CFG80211_CONN_SCANNING ||
597 wdev->conn->state == CFG80211_CONN_SCAN_AGAIN) {
602 /* wdev->conn->params.bssid must be set if > SCANNING */
603 err = cfg80211_mlme_deauth(rdev, wdev->netdev,
604 wdev->conn->params.bssid,
605 NULL, 0, reason, false);
607 cfg80211_sme_free(wdev);
612 * code shared for in-device and software SME
615 static bool cfg80211_is_all_idle(void)
617 struct cfg80211_registered_device *rdev;
618 struct wireless_dev *wdev;
619 bool is_all_idle = true;
622 * All devices must be idle as otherwise if you are actively
623 * scanning some new beacon hints could be learned and would
624 * count as new regulatory hints.
626 list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
627 list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
629 if (wdev->conn || wdev->current_bss)
638 static void disconnect_work(struct work_struct *work)
641 if (cfg80211_is_all_idle())
642 regulatory_hint_disconnect();
646 static DECLARE_WORK(cfg80211_disconnect_work, disconnect_work);
650 * API calls for drivers implementing connect/disconnect and
654 /* This method must consume bss one way or another */
655 void __cfg80211_connect_result(struct net_device *dev, const u8 *bssid,
656 const u8 *req_ie, size_t req_ie_len,
657 const u8 *resp_ie, size_t resp_ie_len,
658 int status, bool wextev,
659 struct cfg80211_bss *bss)
661 struct wireless_dev *wdev = dev->ieee80211_ptr;
662 const u8 *country_ie;
663 #ifdef CONFIG_CFG80211_WEXT
664 union iwreq_data wrqu;
667 ASSERT_WDEV_LOCK(wdev);
669 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION &&
670 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)) {
671 cfg80211_put_bss(wdev->wiphy, bss);
675 nl80211_send_connect_result(wiphy_to_rdev(wdev->wiphy), dev,
676 bssid, req_ie, req_ie_len,
677 resp_ie, resp_ie_len,
680 #ifdef CONFIG_CFG80211_WEXT
682 if (req_ie && status == WLAN_STATUS_SUCCESS) {
683 memset(&wrqu, 0, sizeof(wrqu));
684 wrqu.data.length = req_ie_len;
685 wireless_send_event(dev, IWEVASSOCREQIE, &wrqu, req_ie);
688 if (resp_ie && status == WLAN_STATUS_SUCCESS) {
689 memset(&wrqu, 0, sizeof(wrqu));
690 wrqu.data.length = resp_ie_len;
691 wireless_send_event(dev, IWEVASSOCRESPIE, &wrqu, resp_ie);
694 memset(&wrqu, 0, sizeof(wrqu));
695 wrqu.ap_addr.sa_family = ARPHRD_ETHER;
696 if (bssid && status == WLAN_STATUS_SUCCESS) {
697 memcpy(wrqu.ap_addr.sa_data, bssid, ETH_ALEN);
698 memcpy(wdev->wext.prev_bssid, bssid, ETH_ALEN);
699 wdev->wext.prev_bssid_valid = true;
701 wireless_send_event(dev, SIOCGIWAP, &wrqu, NULL);
705 if (!bss && (status == WLAN_STATUS_SUCCESS)) {
706 WARN_ON_ONCE(!wiphy_to_rdev(wdev->wiphy)->ops->connect);
707 bss = cfg80211_get_bss(wdev->wiphy, NULL, bssid,
708 wdev->ssid, wdev->ssid_len,
710 IEEE80211_PRIVACY_ANY);
712 cfg80211_hold_bss(bss_from_pub(bss));
715 if (wdev->current_bss) {
716 cfg80211_unhold_bss(wdev->current_bss);
717 cfg80211_put_bss(wdev->wiphy, &wdev->current_bss->pub);
718 wdev->current_bss = NULL;
721 if (status != WLAN_STATUS_SUCCESS) {
722 kzfree(wdev->connect_keys);
723 wdev->connect_keys = NULL;
726 cfg80211_unhold_bss(bss_from_pub(bss));
727 cfg80211_put_bss(wdev->wiphy, bss);
729 cfg80211_sme_free(wdev);
736 wdev->current_bss = bss_from_pub(bss);
738 if (!(wdev->wiphy->flags & WIPHY_FLAG_HAS_STATIC_WEP))
739 cfg80211_upload_connect_keys(wdev);
742 country_ie = ieee80211_bss_get_ie(bss, WLAN_EID_COUNTRY);
748 country_ie = kmemdup(country_ie, 2 + country_ie[1], GFP_ATOMIC);
755 * ieee80211_bss_get_ie() ensures we can access:
756 * - country_ie + 2, the start of the country ie data, and
757 * - and country_ie[1] which is the IE length
759 regulatory_hint_country_ie(wdev->wiphy, bss->channel->band,
760 country_ie + 2, country_ie[1]);
764 /* Consumes bss object one way or another */
765 void cfg80211_connect_bss(struct net_device *dev, const u8 *bssid,
766 struct cfg80211_bss *bss, const u8 *req_ie,
767 size_t req_ie_len, const u8 *resp_ie,
768 size_t resp_ie_len, int status, gfp_t gfp)
770 struct wireless_dev *wdev = dev->ieee80211_ptr;
771 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
772 struct cfg80211_event *ev;
776 /* Make sure the bss entry provided by the driver is valid. */
777 struct cfg80211_internal_bss *ibss = bss_from_pub(bss);
779 if (WARN_ON(list_empty(&ibss->list))) {
780 cfg80211_put_bss(wdev->wiphy, bss);
785 ev = kzalloc(sizeof(*ev) + req_ie_len + resp_ie_len, gfp);
787 cfg80211_put_bss(wdev->wiphy, bss);
791 ev->type = EVENT_CONNECT_RESULT;
793 memcpy(ev->cr.bssid, bssid, ETH_ALEN);
795 ev->cr.req_ie = ((u8 *)ev) + sizeof(*ev);
796 ev->cr.req_ie_len = req_ie_len;
797 memcpy((void *)ev->cr.req_ie, req_ie, req_ie_len);
800 ev->cr.resp_ie = ((u8 *)ev) + sizeof(*ev) + req_ie_len;
801 ev->cr.resp_ie_len = resp_ie_len;
802 memcpy((void *)ev->cr.resp_ie, resp_ie, resp_ie_len);
805 cfg80211_hold_bss(bss_from_pub(bss));
807 ev->cr.status = status;
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_connect_bss);
816 /* Consumes bss object one way or another */
817 void __cfg80211_roamed(struct wireless_dev *wdev,
818 struct cfg80211_bss *bss,
819 const u8 *req_ie, size_t req_ie_len,
820 const u8 *resp_ie, size_t resp_ie_len)
822 #ifdef CONFIG_CFG80211_WEXT
823 union iwreq_data wrqu;
825 ASSERT_WDEV_LOCK(wdev);
827 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION &&
828 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT))
831 if (WARN_ON(!wdev->current_bss))
834 cfg80211_unhold_bss(wdev->current_bss);
835 cfg80211_put_bss(wdev->wiphy, &wdev->current_bss->pub);
836 wdev->current_bss = NULL;
838 cfg80211_hold_bss(bss_from_pub(bss));
839 wdev->current_bss = bss_from_pub(bss);
841 nl80211_send_roamed(wiphy_to_rdev(wdev->wiphy),
842 wdev->netdev, bss->bssid,
843 req_ie, req_ie_len, resp_ie, resp_ie_len,
846 #ifdef CONFIG_CFG80211_WEXT
848 memset(&wrqu, 0, sizeof(wrqu));
849 wrqu.data.length = req_ie_len;
850 wireless_send_event(wdev->netdev, IWEVASSOCREQIE,
855 memset(&wrqu, 0, sizeof(wrqu));
856 wrqu.data.length = resp_ie_len;
857 wireless_send_event(wdev->netdev, IWEVASSOCRESPIE,
861 memset(&wrqu, 0, sizeof(wrqu));
862 wrqu.ap_addr.sa_family = ARPHRD_ETHER;
863 memcpy(wrqu.ap_addr.sa_data, bss->bssid, ETH_ALEN);
864 memcpy(wdev->wext.prev_bssid, bss->bssid, ETH_ALEN);
865 wdev->wext.prev_bssid_valid = true;
866 wireless_send_event(wdev->netdev, SIOCGIWAP, &wrqu, NULL);
871 cfg80211_put_bss(wdev->wiphy, bss);
874 void cfg80211_roamed(struct net_device *dev,
875 struct ieee80211_channel *channel,
877 const u8 *req_ie, size_t req_ie_len,
878 const u8 *resp_ie, size_t resp_ie_len, gfp_t gfp)
880 struct wireless_dev *wdev = dev->ieee80211_ptr;
881 struct cfg80211_bss *bss;
883 bss = cfg80211_get_bss(wdev->wiphy, channel, bssid, wdev->ssid,
885 wdev->conn_bss_type, IEEE80211_PRIVACY_ANY);
889 cfg80211_roamed_bss(dev, bss, req_ie, req_ie_len, resp_ie,
892 EXPORT_SYMBOL(cfg80211_roamed);
894 /* Consumes bss object one way or another */
895 void cfg80211_roamed_bss(struct net_device *dev,
896 struct cfg80211_bss *bss, const u8 *req_ie,
897 size_t req_ie_len, const u8 *resp_ie,
898 size_t resp_ie_len, gfp_t gfp)
900 struct wireless_dev *wdev = dev->ieee80211_ptr;
901 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
902 struct cfg80211_event *ev;
908 ev = kzalloc(sizeof(*ev) + req_ie_len + resp_ie_len, gfp);
910 cfg80211_put_bss(wdev->wiphy, bss);
914 ev->type = EVENT_ROAMED;
915 ev->rm.req_ie = ((u8 *)ev) + sizeof(*ev);
916 ev->rm.req_ie_len = req_ie_len;
917 memcpy((void *)ev->rm.req_ie, req_ie, req_ie_len);
918 ev->rm.resp_ie = ((u8 *)ev) + sizeof(*ev) + req_ie_len;
919 ev->rm.resp_ie_len = resp_ie_len;
920 memcpy((void *)ev->rm.resp_ie, resp_ie, resp_ie_len);
923 spin_lock_irqsave(&wdev->event_lock, flags);
924 list_add_tail(&ev->list, &wdev->event_list);
925 spin_unlock_irqrestore(&wdev->event_lock, flags);
926 queue_work(cfg80211_wq, &rdev->event_work);
928 EXPORT_SYMBOL(cfg80211_roamed_bss);
930 void __cfg80211_disconnected(struct net_device *dev, const u8 *ie,
931 size_t ie_len, u16 reason, bool from_ap)
933 struct wireless_dev *wdev = dev->ieee80211_ptr;
934 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
936 #ifdef CONFIG_CFG80211_WEXT
937 union iwreq_data wrqu;
940 ASSERT_WDEV_LOCK(wdev);
942 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION &&
943 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT))
946 if (wdev->current_bss) {
947 cfg80211_unhold_bss(wdev->current_bss);
948 cfg80211_put_bss(wdev->wiphy, &wdev->current_bss->pub);
951 wdev->current_bss = NULL;
954 nl80211_send_disconnected(rdev, dev, reason, ie, ie_len, from_ap);
956 /* stop critical protocol if supported */
957 if (rdev->ops->crit_proto_stop && rdev->crit_proto_nlportid) {
958 rdev->crit_proto_nlportid = 0;
959 rdev_crit_proto_stop(rdev, wdev);
963 * Delete all the keys ... pairwise keys can't really
964 * exist any more anyway, but default keys might.
966 if (rdev->ops->del_key)
967 for (i = 0; i < 6; i++)
968 rdev_del_key(rdev, dev, i, false, NULL);
970 rdev_set_qos_map(rdev, dev, NULL);
972 #ifdef CONFIG_CFG80211_WEXT
973 memset(&wrqu, 0, sizeof(wrqu));
974 wrqu.ap_addr.sa_family = ARPHRD_ETHER;
975 wireless_send_event(dev, SIOCGIWAP, &wrqu, NULL);
976 wdev->wext.connect.ssid_len = 0;
979 schedule_work(&cfg80211_disconnect_work);
982 void cfg80211_disconnected(struct net_device *dev, u16 reason,
983 const u8 *ie, size_t ie_len,
984 bool locally_generated, gfp_t gfp)
986 struct wireless_dev *wdev = dev->ieee80211_ptr;
987 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
988 struct cfg80211_event *ev;
991 ev = kzalloc(sizeof(*ev) + ie_len, gfp);
995 ev->type = EVENT_DISCONNECTED;
996 ev->dc.ie = ((u8 *)ev) + sizeof(*ev);
997 ev->dc.ie_len = ie_len;
998 memcpy((void *)ev->dc.ie, ie, ie_len);
999 ev->dc.reason = reason;
1000 ev->dc.locally_generated = locally_generated;
1002 spin_lock_irqsave(&wdev->event_lock, flags);
1003 list_add_tail(&ev->list, &wdev->event_list);
1004 spin_unlock_irqrestore(&wdev->event_lock, flags);
1005 queue_work(cfg80211_wq, &rdev->event_work);
1007 EXPORT_SYMBOL(cfg80211_disconnected);
1010 * API calls for nl80211/wext compatibility code
1012 int cfg80211_connect(struct cfg80211_registered_device *rdev,
1013 struct net_device *dev,
1014 struct cfg80211_connect_params *connect,
1015 struct cfg80211_cached_keys *connkeys,
1016 const u8 *prev_bssid)
1018 struct wireless_dev *wdev = dev->ieee80211_ptr;
1021 ASSERT_WDEV_LOCK(wdev);
1024 * If we have an ssid_len, we're trying to connect or are
1025 * already connected, so reject a new SSID unless it's the
1026 * same (which is the case for re-association.)
1028 if (wdev->ssid_len &&
1029 (wdev->ssid_len != connect->ssid_len ||
1030 memcmp(wdev->ssid, connect->ssid, wdev->ssid_len)))
1034 * If connected, reject (re-)association unless prev_bssid
1035 * matches the current BSSID.
1037 if (wdev->current_bss) {
1040 if (!ether_addr_equal(prev_bssid, wdev->current_bss->pub.bssid))
1045 * Reject if we're in the process of connecting with WEP,
1046 * this case isn't very interesting and trying to handle
1047 * it would make the code much more complex.
1049 if (wdev->connect_keys)
1050 return -EINPROGRESS;
1052 cfg80211_oper_and_ht_capa(&connect->ht_capa_mask,
1053 rdev->wiphy.ht_capa_mod_mask);
1055 if (connkeys && connkeys->def >= 0) {
1059 idx = connkeys->def;
1060 cipher = connkeys->params[idx].cipher;
1061 /* If given a WEP key we may need it for shared key auth */
1062 if (cipher == WLAN_CIPHER_SUITE_WEP40 ||
1063 cipher == WLAN_CIPHER_SUITE_WEP104) {
1064 connect->key_idx = idx;
1065 connect->key = connkeys->params[idx].key;
1066 connect->key_len = connkeys->params[idx].key_len;
1069 * If ciphers are not set (e.g. when going through
1070 * iwconfig), we have to set them appropriately here.
1072 if (connect->crypto.cipher_group == 0)
1073 connect->crypto.cipher_group = cipher;
1075 if (connect->crypto.n_ciphers_pairwise == 0) {
1076 connect->crypto.n_ciphers_pairwise = 1;
1077 connect->crypto.ciphers_pairwise[0] = cipher;
1081 connect->crypto.wep_keys = connkeys->params;
1082 connect->crypto.wep_tx_key = connkeys->def;
1084 if (WARN_ON(connkeys))
1088 wdev->connect_keys = connkeys;
1089 memcpy(wdev->ssid, connect->ssid, connect->ssid_len);
1090 wdev->ssid_len = connect->ssid_len;
1092 wdev->conn_bss_type = connect->pbss ? IEEE80211_BSS_TYPE_PBSS :
1093 IEEE80211_BSS_TYPE_ESS;
1095 if (!rdev->ops->connect)
1096 err = cfg80211_sme_connect(wdev, connect, prev_bssid);
1098 err = rdev_connect(rdev, dev, connect);
1101 wdev->connect_keys = NULL;
1103 * This could be reassoc getting refused, don't clear
1104 * ssid_len in that case.
1106 if (!wdev->current_bss)
1114 int cfg80211_disconnect(struct cfg80211_registered_device *rdev,
1115 struct net_device *dev, u16 reason, bool wextev)
1117 struct wireless_dev *wdev = dev->ieee80211_ptr;
1120 ASSERT_WDEV_LOCK(wdev);
1122 kzfree(wdev->connect_keys);
1123 wdev->connect_keys = NULL;
1126 err = cfg80211_sme_disconnect(wdev, reason);
1127 else if (!rdev->ops->disconnect)
1128 cfg80211_mlme_down(rdev, dev);
1129 else if (wdev->current_bss)
1130 err = rdev_disconnect(rdev, dev, reason);
1133 * Clear ssid_len unless we actually were fully connected,
1134 * in which case cfg80211_disconnected() will take care of
1137 if (!wdev->current_bss)