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1/*
2 * SME code for cfg80211's connect emulation.
3 *
4 * Copyright 2009 Johannes Berg <johannes@sipsolutions.net>
5 * Copyright (C) 2009 Intel Corporation. All rights reserved.
6 */
7
8#include <linux/etherdevice.h>
9#include <linux/if_arp.h>
10#include <linux/slab.h>
11#include <linux/workqueue.h>
12#include <linux/wireless.h>
13#include <net/iw_handler.h>
14#include <net/cfg80211.h>
15#include <net/rtnetlink.h>
16#include "nl80211.h"
17#include "reg.h"
18
19struct cfg80211_conn {
20 struct cfg80211_connect_params params;
21 /* these are sub-states of the _CONNECTING sme_state */
22 enum {
23 CFG80211_CONN_IDLE,
24 CFG80211_CONN_SCANNING,
25 CFG80211_CONN_SCAN_AGAIN,
26 CFG80211_CONN_AUTHENTICATE_NEXT,
27 CFG80211_CONN_AUTHENTICATING,
28 CFG80211_CONN_ASSOCIATE_NEXT,
29 CFG80211_CONN_ASSOCIATING,
30 CFG80211_CONN_DEAUTH_ASSOC_FAIL,
31 } state;
32 u8 bssid[ETH_ALEN], prev_bssid[ETH_ALEN];
33 u8 *ie;
34 size_t ie_len;
35 bool auto_auth, prev_bssid_valid;
36};
37
38static bool cfg80211_is_all_idle(void)
39{
40 struct cfg80211_registered_device *rdev;
41 struct wireless_dev *wdev;
42 bool is_all_idle = true;
43
44 mutex_lock(&cfg80211_mutex);
45
46 /*
47 * All devices must be idle as otherwise if you are actively
48 * scanning some new beacon hints could be learned and would
49 * count as new regulatory hints.
50 */
51 list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
52 cfg80211_lock_rdev(rdev);
53 list_for_each_entry(wdev, &rdev->netdev_list, list) {
54 wdev_lock(wdev);
55 if (wdev->sme_state != CFG80211_SME_IDLE)
56 is_all_idle = false;
57 wdev_unlock(wdev);
58 }
59 cfg80211_unlock_rdev(rdev);
60 }
61
62 mutex_unlock(&cfg80211_mutex);
63
64 return is_all_idle;
65}
66
67static void disconnect_work(struct work_struct *work)
68{
69 if (!cfg80211_is_all_idle())
70 return;
71
72 regulatory_hint_disconnect();
73}
74
75static DECLARE_WORK(cfg80211_disconnect_work, disconnect_work);
76
77static int cfg80211_conn_scan(struct wireless_dev *wdev)
78{
79 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
80 struct cfg80211_scan_request *request;
81 int n_channels, err;
82
83 ASSERT_RTNL();
84 ASSERT_RDEV_LOCK(rdev);
85 ASSERT_WDEV_LOCK(wdev);
86
87 if (rdev->scan_req)
88 return -EBUSY;
89
90 if (wdev->conn->params.channel) {
91 n_channels = 1;
92 } else {
93 enum ieee80211_band band;
94 n_channels = 0;
95
96 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
97 if (!wdev->wiphy->bands[band])
98 continue;
99 n_channels += wdev->wiphy->bands[band]->n_channels;
100 }
101 }
102 request = kzalloc(sizeof(*request) + sizeof(request->ssids[0]) +
103 sizeof(request->channels[0]) * n_channels,
104 GFP_KERNEL);
105 if (!request)
106 return -ENOMEM;
107
108 if (wdev->conn->params.channel)
109 request->channels[0] = wdev->conn->params.channel;
110 else {
111 int i = 0, j;
112 enum ieee80211_band band;
113
114 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
115 if (!wdev->wiphy->bands[band])
116 continue;
117 for (j = 0; j < wdev->wiphy->bands[band]->n_channels;
118 i++, j++)
119 request->channels[i] =
120 &wdev->wiphy->bands[band]->channels[j];
121 request->rates[band] =
122 (1 << wdev->wiphy->bands[band]->n_bitrates) - 1;
123 }
124 }
125 request->n_channels = n_channels;
126 request->ssids = (void *)&request->channels[n_channels];
127 request->n_ssids = 1;
128
129 memcpy(request->ssids[0].ssid, wdev->conn->params.ssid,
130 wdev->conn->params.ssid_len);
131 request->ssids[0].ssid_len = wdev->conn->params.ssid_len;
132
133 request->dev = wdev->netdev;
134 request->wiphy = &rdev->wiphy;
135
136 rdev->scan_req = request;
137
138 err = rdev->ops->scan(wdev->wiphy, wdev->netdev, request);
139 if (!err) {
140 wdev->conn->state = CFG80211_CONN_SCANNING;
141 nl80211_send_scan_start(rdev, wdev->netdev);
142 dev_hold(wdev->netdev);
143 } else {
144 rdev->scan_req = NULL;
145 kfree(request);
146 }
147 return err;
148}
149
150static int cfg80211_conn_do_work(struct wireless_dev *wdev)
151{
152 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
153 struct cfg80211_connect_params *params;
154 const u8 *prev_bssid = NULL;
155 int err;
156
157 ASSERT_WDEV_LOCK(wdev);
158
159 if (!wdev->conn)
160 return 0;
161
162 params = &wdev->conn->params;
163
164 switch (wdev->conn->state) {
165 case CFG80211_CONN_SCAN_AGAIN:
166 return cfg80211_conn_scan(wdev);
167 case CFG80211_CONN_AUTHENTICATE_NEXT:
168 BUG_ON(!rdev->ops->auth);
169 wdev->conn->state = CFG80211_CONN_AUTHENTICATING;
170 return __cfg80211_mlme_auth(rdev, wdev->netdev,
171 params->channel, params->auth_type,
172 params->bssid,
173 params->ssid, params->ssid_len,
174 NULL, 0,
175 params->key, params->key_len,
176 params->key_idx, false);
177 case CFG80211_CONN_ASSOCIATE_NEXT:
178 BUG_ON(!rdev->ops->assoc);
179 wdev->conn->state = CFG80211_CONN_ASSOCIATING;
180 if (wdev->conn->prev_bssid_valid)
181 prev_bssid = wdev->conn->prev_bssid;
182 err = __cfg80211_mlme_assoc(rdev, wdev->netdev,
183 params->channel, params->bssid,
184 prev_bssid,
185 params->ssid, params->ssid_len,
186 params->ie, params->ie_len,
187 false, ¶ms->crypto);
188 if (err)
189 __cfg80211_mlme_deauth(rdev, wdev->netdev, params->bssid,
190 NULL, 0,
191 WLAN_REASON_DEAUTH_LEAVING,
192 false);
193 return err;
194 case CFG80211_CONN_DEAUTH_ASSOC_FAIL:
195 __cfg80211_mlme_deauth(rdev, wdev->netdev, params->bssid,
196 NULL, 0,
197 WLAN_REASON_DEAUTH_LEAVING, false);
198 /* return an error so that we call __cfg80211_connect_result() */
199 return -EINVAL;
200 default:
201 return 0;
202 }
203}
204
205void cfg80211_conn_work(struct work_struct *work)
206{
207 struct cfg80211_registered_device *rdev =
208 container_of(work, struct cfg80211_registered_device, conn_work);
209 struct wireless_dev *wdev;
210 u8 bssid_buf[ETH_ALEN], *bssid = NULL;
211
212 rtnl_lock();
213 cfg80211_lock_rdev(rdev);
214 mutex_lock(&rdev->devlist_mtx);
215
216 list_for_each_entry(wdev, &rdev->netdev_list, list) {
217 wdev_lock(wdev);
218 if (!netif_running(wdev->netdev)) {
219 wdev_unlock(wdev);
220 continue;
221 }
222 if (wdev->sme_state != CFG80211_SME_CONNECTING) {
223 wdev_unlock(wdev);
224 continue;
225 }
226 if (wdev->conn->params.bssid) {
227 memcpy(bssid_buf, wdev->conn->params.bssid, ETH_ALEN);
228 bssid = bssid_buf;
229 }
230 if (cfg80211_conn_do_work(wdev))
231 __cfg80211_connect_result(
232 wdev->netdev, bssid,
233 NULL, 0, NULL, 0,
234 WLAN_STATUS_UNSPECIFIED_FAILURE,
235 false, NULL);
236 wdev_unlock(wdev);
237 }
238
239 mutex_unlock(&rdev->devlist_mtx);
240 cfg80211_unlock_rdev(rdev);
241 rtnl_unlock();
242}
243
244static struct cfg80211_bss *cfg80211_get_conn_bss(struct wireless_dev *wdev)
245{
246 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
247 struct cfg80211_bss *bss;
248 u16 capa = WLAN_CAPABILITY_ESS;
249
250 ASSERT_WDEV_LOCK(wdev);
251
252 if (wdev->conn->params.privacy)
253 capa |= WLAN_CAPABILITY_PRIVACY;
254
255 bss = cfg80211_get_bss(wdev->wiphy, wdev->conn->params.channel,
256 wdev->conn->params.bssid,
257 wdev->conn->params.ssid,
258 wdev->conn->params.ssid_len,
259 WLAN_CAPABILITY_ESS | WLAN_CAPABILITY_PRIVACY,
260 capa);
261 if (!bss)
262 return NULL;
263
264 memcpy(wdev->conn->bssid, bss->bssid, ETH_ALEN);
265 wdev->conn->params.bssid = wdev->conn->bssid;
266 wdev->conn->params.channel = bss->channel;
267 wdev->conn->state = CFG80211_CONN_AUTHENTICATE_NEXT;
268 schedule_work(&rdev->conn_work);
269
270 return bss;
271}
272
273static void __cfg80211_sme_scan_done(struct net_device *dev)
274{
275 struct wireless_dev *wdev = dev->ieee80211_ptr;
276 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
277 struct cfg80211_bss *bss;
278
279 ASSERT_WDEV_LOCK(wdev);
280
281 if (wdev->sme_state != CFG80211_SME_CONNECTING)
282 return;
283
284 if (!wdev->conn)
285 return;
286
287 if (wdev->conn->state != CFG80211_CONN_SCANNING &&
288 wdev->conn->state != CFG80211_CONN_SCAN_AGAIN)
289 return;
290
291 bss = cfg80211_get_conn_bss(wdev);
292 if (bss) {
293 cfg80211_put_bss(bss);
294 } else {
295 /* not found */
296 if (wdev->conn->state == CFG80211_CONN_SCAN_AGAIN)
297 schedule_work(&rdev->conn_work);
298 else
299 __cfg80211_connect_result(
300 wdev->netdev,
301 wdev->conn->params.bssid,
302 NULL, 0, NULL, 0,
303 WLAN_STATUS_UNSPECIFIED_FAILURE,
304 false, NULL);
305 }
306}
307
308void cfg80211_sme_scan_done(struct net_device *dev)
309{
310 struct wireless_dev *wdev = dev->ieee80211_ptr;
311
312 mutex_lock(&wiphy_to_dev(wdev->wiphy)->devlist_mtx);
313 wdev_lock(wdev);
314 __cfg80211_sme_scan_done(dev);
315 wdev_unlock(wdev);
316 mutex_unlock(&wiphy_to_dev(wdev->wiphy)->devlist_mtx);
317}
318
319void cfg80211_sme_rx_auth(struct net_device *dev,
320 const u8 *buf, size_t len)
321{
322 struct wireless_dev *wdev = dev->ieee80211_ptr;
323 struct wiphy *wiphy = wdev->wiphy;
324 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
325 struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)buf;
326 u16 status_code = le16_to_cpu(mgmt->u.auth.status_code);
327
328 ASSERT_WDEV_LOCK(wdev);
329
330 /* should only RX auth frames when connecting */
331 if (wdev->sme_state != CFG80211_SME_CONNECTING)
332 return;
333
334 if (WARN_ON(!wdev->conn))
335 return;
336
337 if (status_code == WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG &&
338 wdev->conn->auto_auth &&
339 wdev->conn->params.auth_type != NL80211_AUTHTYPE_NETWORK_EAP) {
340 /* select automatically between only open, shared, leap */
341 switch (wdev->conn->params.auth_type) {
342 case NL80211_AUTHTYPE_OPEN_SYSTEM:
343 if (wdev->connect_keys)
344 wdev->conn->params.auth_type =
345 NL80211_AUTHTYPE_SHARED_KEY;
346 else
347 wdev->conn->params.auth_type =
348 NL80211_AUTHTYPE_NETWORK_EAP;
349 break;
350 case NL80211_AUTHTYPE_SHARED_KEY:
351 wdev->conn->params.auth_type =
352 NL80211_AUTHTYPE_NETWORK_EAP;
353 break;
354 default:
355 /* huh? */
356 wdev->conn->params.auth_type =
357 NL80211_AUTHTYPE_OPEN_SYSTEM;
358 break;
359 }
360 wdev->conn->state = CFG80211_CONN_AUTHENTICATE_NEXT;
361 schedule_work(&rdev->conn_work);
362 } else if (status_code != WLAN_STATUS_SUCCESS) {
363 __cfg80211_connect_result(dev, mgmt->bssid, NULL, 0, NULL, 0,
364 status_code, false, NULL);
365 } else if (wdev->sme_state == CFG80211_SME_CONNECTING &&
366 wdev->conn->state == CFG80211_CONN_AUTHENTICATING) {
367 wdev->conn->state = CFG80211_CONN_ASSOCIATE_NEXT;
368 schedule_work(&rdev->conn_work);
369 }
370}
371
372bool cfg80211_sme_failed_reassoc(struct wireless_dev *wdev)
373{
374 struct wiphy *wiphy = wdev->wiphy;
375 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
376
377 if (WARN_ON(!wdev->conn))
378 return false;
379
380 if (!wdev->conn->prev_bssid_valid)
381 return false;
382
383 /*
384 * Some stupid APs don't accept reassoc, so we
385 * need to fall back to trying regular assoc.
386 */
387 wdev->conn->prev_bssid_valid = false;
388 wdev->conn->state = CFG80211_CONN_ASSOCIATE_NEXT;
389 schedule_work(&rdev->conn_work);
390
391 return true;
392}
393
394void cfg80211_sme_failed_assoc(struct wireless_dev *wdev)
395{
396 struct wiphy *wiphy = wdev->wiphy;
397 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
398
399 wdev->conn->state = CFG80211_CONN_DEAUTH_ASSOC_FAIL;
400 schedule_work(&rdev->conn_work);
401}
402
403void __cfg80211_connect_result(struct net_device *dev, const u8 *bssid,
404 const u8 *req_ie, size_t req_ie_len,
405 const u8 *resp_ie, size_t resp_ie_len,
406 u16 status, bool wextev,
407 struct cfg80211_bss *bss)
408{
409 struct wireless_dev *wdev = dev->ieee80211_ptr;
410 u8 *country_ie;
411#ifdef CONFIG_CFG80211_WEXT
412 union iwreq_data wrqu;
413#endif
414
415 ASSERT_WDEV_LOCK(wdev);
416
417 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION &&
418 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT))
419 return;
420
421 if (wdev->sme_state != CFG80211_SME_CONNECTING)
422 return;
423
424 nl80211_send_connect_result(wiphy_to_dev(wdev->wiphy), dev,
425 bssid, req_ie, req_ie_len,
426 resp_ie, resp_ie_len,
427 status, GFP_KERNEL);
428
429#ifdef CONFIG_CFG80211_WEXT
430 if (wextev) {
431 if (req_ie && status == WLAN_STATUS_SUCCESS) {
432 memset(&wrqu, 0, sizeof(wrqu));
433 wrqu.data.length = req_ie_len;
434 wireless_send_event(dev, IWEVASSOCREQIE, &wrqu, req_ie);
435 }
436
437 if (resp_ie && status == WLAN_STATUS_SUCCESS) {
438 memset(&wrqu, 0, sizeof(wrqu));
439 wrqu.data.length = resp_ie_len;
440 wireless_send_event(dev, IWEVASSOCRESPIE, &wrqu, resp_ie);
441 }
442
443 memset(&wrqu, 0, sizeof(wrqu));
444 wrqu.ap_addr.sa_family = ARPHRD_ETHER;
445 if (bssid && status == WLAN_STATUS_SUCCESS) {
446 memcpy(wrqu.ap_addr.sa_data, bssid, ETH_ALEN);
447 memcpy(wdev->wext.prev_bssid, bssid, ETH_ALEN);
448 wdev->wext.prev_bssid_valid = true;
449 }
450 wireless_send_event(dev, SIOCGIWAP, &wrqu, NULL);
451 }
452#endif
453
454 if (wdev->current_bss) {
455 cfg80211_unhold_bss(wdev->current_bss);
456 cfg80211_put_bss(&wdev->current_bss->pub);
457 wdev->current_bss = NULL;
458 }
459
460 if (wdev->conn)
461 wdev->conn->state = CFG80211_CONN_IDLE;
462
463 if (status != WLAN_STATUS_SUCCESS) {
464 wdev->sme_state = CFG80211_SME_IDLE;
465 if (wdev->conn)
466 kfree(wdev->conn->ie);
467 kfree(wdev->conn);
468 wdev->conn = NULL;
469 kfree(wdev->connect_keys);
470 wdev->connect_keys = NULL;
471 wdev->ssid_len = 0;
472 return;
473 }
474
475 if (!bss)
476 bss = cfg80211_get_bss(wdev->wiphy,
477 wdev->conn ? wdev->conn->params.channel :
478 NULL,
479 bssid,
480 wdev->ssid, wdev->ssid_len,
481 WLAN_CAPABILITY_ESS,
482 WLAN_CAPABILITY_ESS);
483
484 if (WARN_ON(!bss))
485 return;
486
487 cfg80211_hold_bss(bss_from_pub(bss));
488 wdev->current_bss = bss_from_pub(bss);
489
490 wdev->sme_state = CFG80211_SME_CONNECTED;
491 cfg80211_upload_connect_keys(wdev);
492
493 country_ie = (u8 *) ieee80211_bss_get_ie(bss, WLAN_EID_COUNTRY);
494
495 if (!country_ie)
496 return;
497
498 /*
499 * ieee80211_bss_get_ie() ensures we can access:
500 * - country_ie + 2, the start of the country ie data, and
501 * - and country_ie[1] which is the IE length
502 */
503 regulatory_hint_11d(wdev->wiphy,
504 bss->channel->band,
505 country_ie + 2,
506 country_ie[1]);
507}
508
509void cfg80211_connect_result(struct net_device *dev, const u8 *bssid,
510 const u8 *req_ie, size_t req_ie_len,
511 const u8 *resp_ie, size_t resp_ie_len,
512 u16 status, gfp_t gfp)
513{
514 struct wireless_dev *wdev = dev->ieee80211_ptr;
515 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
516 struct cfg80211_event *ev;
517 unsigned long flags;
518
519 CFG80211_DEV_WARN_ON(wdev->sme_state != CFG80211_SME_CONNECTING);
520
521 ev = kzalloc(sizeof(*ev) + req_ie_len + resp_ie_len, gfp);
522 if (!ev)
523 return;
524
525 ev->type = EVENT_CONNECT_RESULT;
526 if (bssid)
527 memcpy(ev->cr.bssid, bssid, ETH_ALEN);
528 if (req_ie_len) {
529 ev->cr.req_ie = ((u8 *)ev) + sizeof(*ev);
530 ev->cr.req_ie_len = req_ie_len;
531 memcpy((void *)ev->cr.req_ie, req_ie, req_ie_len);
532 }
533 if (resp_ie_len) {
534 ev->cr.resp_ie = ((u8 *)ev) + sizeof(*ev) + req_ie_len;
535 ev->cr.resp_ie_len = resp_ie_len;
536 memcpy((void *)ev->cr.resp_ie, resp_ie, resp_ie_len);
537 }
538 ev->cr.status = status;
539
540 spin_lock_irqsave(&wdev->event_lock, flags);
541 list_add_tail(&ev->list, &wdev->event_list);
542 spin_unlock_irqrestore(&wdev->event_lock, flags);
543 queue_work(cfg80211_wq, &rdev->event_work);
544}
545EXPORT_SYMBOL(cfg80211_connect_result);
546
547void __cfg80211_roamed(struct wireless_dev *wdev,
548 struct ieee80211_channel *channel,
549 const u8 *bssid,
550 const u8 *req_ie, size_t req_ie_len,
551 const u8 *resp_ie, size_t resp_ie_len)
552{
553 struct cfg80211_bss *bss;
554#ifdef CONFIG_CFG80211_WEXT
555 union iwreq_data wrqu;
556#endif
557
558 ASSERT_WDEV_LOCK(wdev);
559
560 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION &&
561 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT))
562 return;
563
564 if (wdev->sme_state != CFG80211_SME_CONNECTED)
565 return;
566
567 /* internal error -- how did we get to CONNECTED w/o BSS? */
568 if (WARN_ON(!wdev->current_bss)) {
569 return;
570 }
571
572 cfg80211_unhold_bss(wdev->current_bss);
573 cfg80211_put_bss(&wdev->current_bss->pub);
574 wdev->current_bss = NULL;
575
576 bss = cfg80211_get_bss(wdev->wiphy, channel, bssid,
577 wdev->ssid, wdev->ssid_len,
578 WLAN_CAPABILITY_ESS, WLAN_CAPABILITY_ESS);
579
580 if (WARN_ON(!bss))
581 return;
582
583 cfg80211_hold_bss(bss_from_pub(bss));
584 wdev->current_bss = bss_from_pub(bss);
585
586 nl80211_send_roamed(wiphy_to_dev(wdev->wiphy), wdev->netdev, bssid,
587 req_ie, req_ie_len, resp_ie, resp_ie_len,
588 GFP_KERNEL);
589
590#ifdef CONFIG_CFG80211_WEXT
591 if (req_ie) {
592 memset(&wrqu, 0, sizeof(wrqu));
593 wrqu.data.length = req_ie_len;
594 wireless_send_event(wdev->netdev, IWEVASSOCREQIE,
595 &wrqu, req_ie);
596 }
597
598 if (resp_ie) {
599 memset(&wrqu, 0, sizeof(wrqu));
600 wrqu.data.length = resp_ie_len;
601 wireless_send_event(wdev->netdev, IWEVASSOCRESPIE,
602 &wrqu, resp_ie);
603 }
604
605 memset(&wrqu, 0, sizeof(wrqu));
606 wrqu.ap_addr.sa_family = ARPHRD_ETHER;
607 memcpy(wrqu.ap_addr.sa_data, bssid, ETH_ALEN);
608 memcpy(wdev->wext.prev_bssid, bssid, ETH_ALEN);
609 wdev->wext.prev_bssid_valid = true;
610 wireless_send_event(wdev->netdev, SIOCGIWAP, &wrqu, NULL);
611#endif
612}
613
614void cfg80211_roamed(struct net_device *dev,
615 struct ieee80211_channel *channel,
616 const u8 *bssid,
617 const u8 *req_ie, size_t req_ie_len,
618 const u8 *resp_ie, size_t resp_ie_len, gfp_t gfp)
619{
620 struct wireless_dev *wdev = dev->ieee80211_ptr;
621 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
622 struct cfg80211_event *ev;
623 unsigned long flags;
624
625 CFG80211_DEV_WARN_ON(wdev->sme_state != CFG80211_SME_CONNECTED);
626
627 ev = kzalloc(sizeof(*ev) + req_ie_len + resp_ie_len, gfp);
628 if (!ev)
629 return;
630
631 ev->type = EVENT_ROAMED;
632 ev->rm.channel = channel;
633 memcpy(ev->rm.bssid, bssid, ETH_ALEN);
634 ev->rm.req_ie = ((u8 *)ev) + sizeof(*ev);
635 ev->rm.req_ie_len = req_ie_len;
636 memcpy((void *)ev->rm.req_ie, req_ie, req_ie_len);
637 ev->rm.resp_ie = ((u8 *)ev) + sizeof(*ev) + req_ie_len;
638 ev->rm.resp_ie_len = resp_ie_len;
639 memcpy((void *)ev->rm.resp_ie, resp_ie, resp_ie_len);
640
641 spin_lock_irqsave(&wdev->event_lock, flags);
642 list_add_tail(&ev->list, &wdev->event_list);
643 spin_unlock_irqrestore(&wdev->event_lock, flags);
644 queue_work(cfg80211_wq, &rdev->event_work);
645}
646EXPORT_SYMBOL(cfg80211_roamed);
647
648void __cfg80211_disconnected(struct net_device *dev, const u8 *ie,
649 size_t ie_len, u16 reason, bool from_ap)
650{
651 struct wireless_dev *wdev = dev->ieee80211_ptr;
652 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
653 int i;
654#ifdef CONFIG_CFG80211_WEXT
655 union iwreq_data wrqu;
656#endif
657
658 ASSERT_WDEV_LOCK(wdev);
659
660 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION &&
661 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT))
662 return;
663
664 if (wdev->sme_state != CFG80211_SME_CONNECTED)
665 return;
666
667 if (wdev->current_bss) {
668 cfg80211_unhold_bss(wdev->current_bss);
669 cfg80211_put_bss(&wdev->current_bss->pub);
670 }
671
672 wdev->current_bss = NULL;
673 wdev->sme_state = CFG80211_SME_IDLE;
674 wdev->ssid_len = 0;
675
676 if (wdev->conn) {
677 const u8 *bssid;
678 int ret;
679
680 kfree(wdev->conn->ie);
681 wdev->conn->ie = NULL;
682 kfree(wdev->conn);
683 wdev->conn = NULL;
684
685 /*
686 * If this disconnect was due to a disassoc, we
687 * we might still have an auth BSS around. For
688 * the userspace SME that's currently expected,
689 * but for the kernel SME (nl80211 CONNECT or
690 * wireless extensions) we want to clear up all
691 * state.
692 */
693 for (i = 0; i < MAX_AUTH_BSSES; i++) {
694 if (!wdev->auth_bsses[i])
695 continue;
696 bssid = wdev->auth_bsses[i]->pub.bssid;
697 ret = __cfg80211_mlme_deauth(rdev, dev, bssid, NULL, 0,
698 WLAN_REASON_DEAUTH_LEAVING,
699 false);
700 WARN(ret, "deauth failed: %d\n", ret);
701 }
702 }
703
704 nl80211_send_disconnected(rdev, dev, reason, ie, ie_len, from_ap);
705
706 /*
707 * Delete all the keys ... pairwise keys can't really
708 * exist any more anyway, but default keys might.
709 */
710 if (rdev->ops->del_key)
711 for (i = 0; i < 6; i++)
712 rdev->ops->del_key(wdev->wiphy, dev, i, false, NULL);
713
714#ifdef CONFIG_CFG80211_WEXT
715 memset(&wrqu, 0, sizeof(wrqu));
716 wrqu.ap_addr.sa_family = ARPHRD_ETHER;
717 wireless_send_event(dev, SIOCGIWAP, &wrqu, NULL);
718 wdev->wext.connect.ssid_len = 0;
719#endif
720
721 schedule_work(&cfg80211_disconnect_work);
722}
723
724void cfg80211_disconnected(struct net_device *dev, u16 reason,
725 u8 *ie, size_t ie_len, gfp_t gfp)
726{
727 struct wireless_dev *wdev = dev->ieee80211_ptr;
728 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
729 struct cfg80211_event *ev;
730 unsigned long flags;
731
732 CFG80211_DEV_WARN_ON(wdev->sme_state != CFG80211_SME_CONNECTED);
733
734 ev = kzalloc(sizeof(*ev) + ie_len, gfp);
735 if (!ev)
736 return;
737
738 ev->type = EVENT_DISCONNECTED;
739 ev->dc.ie = ((u8 *)ev) + sizeof(*ev);
740 ev->dc.ie_len = ie_len;
741 memcpy((void *)ev->dc.ie, ie, ie_len);
742 ev->dc.reason = reason;
743
744 spin_lock_irqsave(&wdev->event_lock, flags);
745 list_add_tail(&ev->list, &wdev->event_list);
746 spin_unlock_irqrestore(&wdev->event_lock, flags);
747 queue_work(cfg80211_wq, &rdev->event_work);
748}
749EXPORT_SYMBOL(cfg80211_disconnected);
750
751int __cfg80211_connect(struct cfg80211_registered_device *rdev,
752 struct net_device *dev,
753 struct cfg80211_connect_params *connect,
754 struct cfg80211_cached_keys *connkeys,
755 const u8 *prev_bssid)
756{
757 struct wireless_dev *wdev = dev->ieee80211_ptr;
758 struct cfg80211_bss *bss = NULL;
759 int err;
760
761 ASSERT_WDEV_LOCK(wdev);
762
763 if (wdev->sme_state != CFG80211_SME_IDLE)
764 return -EALREADY;
765
766 if (WARN_ON(wdev->connect_keys)) {
767 kfree(wdev->connect_keys);
768 wdev->connect_keys = NULL;
769 }
770
771 if (connkeys && connkeys->def >= 0) {
772 int idx;
773 u32 cipher;
774
775 idx = connkeys->def;
776 cipher = connkeys->params[idx].cipher;
777 /* If given a WEP key we may need it for shared key auth */
778 if (cipher == WLAN_CIPHER_SUITE_WEP40 ||
779 cipher == WLAN_CIPHER_SUITE_WEP104) {
780 connect->key_idx = idx;
781 connect->key = connkeys->params[idx].key;
782 connect->key_len = connkeys->params[idx].key_len;
783
784 /*
785 * If ciphers are not set (e.g. when going through
786 * iwconfig), we have to set them appropriately here.
787 */
788 if (connect->crypto.cipher_group == 0)
789 connect->crypto.cipher_group = cipher;
790
791 if (connect->crypto.n_ciphers_pairwise == 0) {
792 connect->crypto.n_ciphers_pairwise = 1;
793 connect->crypto.ciphers_pairwise[0] = cipher;
794 }
795 }
796 }
797
798 if (!rdev->ops->connect) {
799 if (!rdev->ops->auth || !rdev->ops->assoc)
800 return -EOPNOTSUPP;
801
802 if (WARN_ON(wdev->conn))
803 return -EINPROGRESS;
804
805 wdev->conn = kzalloc(sizeof(*wdev->conn), GFP_KERNEL);
806 if (!wdev->conn)
807 return -ENOMEM;
808
809 /*
810 * Copy all parameters, and treat explicitly IEs, BSSID, SSID.
811 */
812 memcpy(&wdev->conn->params, connect, sizeof(*connect));
813 if (connect->bssid) {
814 wdev->conn->params.bssid = wdev->conn->bssid;
815 memcpy(wdev->conn->bssid, connect->bssid, ETH_ALEN);
816 }
817
818 if (connect->ie) {
819 wdev->conn->ie = kmemdup(connect->ie, connect->ie_len,
820 GFP_KERNEL);
821 wdev->conn->params.ie = wdev->conn->ie;
822 if (!wdev->conn->ie) {
823 kfree(wdev->conn);
824 wdev->conn = NULL;
825 return -ENOMEM;
826 }
827 }
828
829 if (connect->auth_type == NL80211_AUTHTYPE_AUTOMATIC) {
830 wdev->conn->auto_auth = true;
831 /* start with open system ... should mostly work */
832 wdev->conn->params.auth_type =
833 NL80211_AUTHTYPE_OPEN_SYSTEM;
834 } else {
835 wdev->conn->auto_auth = false;
836 }
837
838 memcpy(wdev->ssid, connect->ssid, connect->ssid_len);
839 wdev->ssid_len = connect->ssid_len;
840 wdev->conn->params.ssid = wdev->ssid;
841 wdev->conn->params.ssid_len = connect->ssid_len;
842
843 /* see if we have the bss already */
844 bss = cfg80211_get_conn_bss(wdev);
845
846 wdev->sme_state = CFG80211_SME_CONNECTING;
847 wdev->connect_keys = connkeys;
848
849 if (prev_bssid) {
850 memcpy(wdev->conn->prev_bssid, prev_bssid, ETH_ALEN);
851 wdev->conn->prev_bssid_valid = true;
852 }
853
854 /* we're good if we have a matching bss struct */
855 if (bss) {
856 wdev->conn->state = CFG80211_CONN_AUTHENTICATE_NEXT;
857 err = cfg80211_conn_do_work(wdev);
858 cfg80211_put_bss(bss);
859 } else {
860 /* otherwise we'll need to scan for the AP first */
861 err = cfg80211_conn_scan(wdev);
862 /*
863 * If we can't scan right now, then we need to scan again
864 * after the current scan finished, since the parameters
865 * changed (unless we find a good AP anyway).
866 */
867 if (err == -EBUSY) {
868 err = 0;
869 wdev->conn->state = CFG80211_CONN_SCAN_AGAIN;
870 }
871 }
872 if (err) {
873 kfree(wdev->conn->ie);
874 kfree(wdev->conn);
875 wdev->conn = NULL;
876 wdev->sme_state = CFG80211_SME_IDLE;
877 wdev->connect_keys = NULL;
878 wdev->ssid_len = 0;
879 }
880
881 return err;
882 } else {
883 wdev->sme_state = CFG80211_SME_CONNECTING;
884 wdev->connect_keys = connkeys;
885 err = rdev->ops->connect(&rdev->wiphy, dev, connect);
886 if (err) {
887 wdev->connect_keys = NULL;
888 wdev->sme_state = CFG80211_SME_IDLE;
889 return err;
890 }
891
892 memcpy(wdev->ssid, connect->ssid, connect->ssid_len);
893 wdev->ssid_len = connect->ssid_len;
894
895 return 0;
896 }
897}
898
899int cfg80211_connect(struct cfg80211_registered_device *rdev,
900 struct net_device *dev,
901 struct cfg80211_connect_params *connect,
902 struct cfg80211_cached_keys *connkeys)
903{
904 int err;
905
906 mutex_lock(&rdev->devlist_mtx);
907 wdev_lock(dev->ieee80211_ptr);
908 err = __cfg80211_connect(rdev, dev, connect, connkeys, NULL);
909 wdev_unlock(dev->ieee80211_ptr);
910 mutex_unlock(&rdev->devlist_mtx);
911
912 return err;
913}
914
915int __cfg80211_disconnect(struct cfg80211_registered_device *rdev,
916 struct net_device *dev, u16 reason, bool wextev)
917{
918 struct wireless_dev *wdev = dev->ieee80211_ptr;
919 int err;
920
921 ASSERT_WDEV_LOCK(wdev);
922
923 if (wdev->sme_state == CFG80211_SME_IDLE)
924 return -EINVAL;
925
926 kfree(wdev->connect_keys);
927 wdev->connect_keys = NULL;
928
929 if (!rdev->ops->disconnect) {
930 if (!rdev->ops->deauth)
931 return -EOPNOTSUPP;
932
933 /* was it connected by userspace SME? */
934 if (!wdev->conn) {
935 cfg80211_mlme_down(rdev, dev);
936 return 0;
937 }
938
939 if (wdev->sme_state == CFG80211_SME_CONNECTING &&
940 (wdev->conn->state == CFG80211_CONN_SCANNING ||
941 wdev->conn->state == CFG80211_CONN_SCAN_AGAIN)) {
942 wdev->sme_state = CFG80211_SME_IDLE;
943 kfree(wdev->conn->ie);
944 kfree(wdev->conn);
945 wdev->conn = NULL;
946 wdev->ssid_len = 0;
947 return 0;
948 }
949
950 /* wdev->conn->params.bssid must be set if > SCANNING */
951 err = __cfg80211_mlme_deauth(rdev, dev,
952 wdev->conn->params.bssid,
953 NULL, 0, reason, false);
954 if (err)
955 return err;
956 } else {
957 err = rdev->ops->disconnect(&rdev->wiphy, dev, reason);
958 if (err)
959 return err;
960 }
961
962 if (wdev->sme_state == CFG80211_SME_CONNECTED)
963 __cfg80211_disconnected(dev, NULL, 0, 0, false);
964 else if (wdev->sme_state == CFG80211_SME_CONNECTING)
965 __cfg80211_connect_result(dev, NULL, NULL, 0, NULL, 0,
966 WLAN_STATUS_UNSPECIFIED_FAILURE,
967 wextev, NULL);
968
969 return 0;
970}
971
972int cfg80211_disconnect(struct cfg80211_registered_device *rdev,
973 struct net_device *dev,
974 u16 reason, bool wextev)
975{
976 int err;
977
978 wdev_lock(dev->ieee80211_ptr);
979 err = __cfg80211_disconnect(rdev, dev, reason, wextev);
980 wdev_unlock(dev->ieee80211_ptr);
981
982 return err;
983}
984
985void cfg80211_sme_disassoc(struct net_device *dev, int idx)
986{
987 struct wireless_dev *wdev = dev->ieee80211_ptr;
988 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
989 u8 bssid[ETH_ALEN];
990
991 ASSERT_WDEV_LOCK(wdev);
992
993 if (!wdev->conn)
994 return;
995
996 if (wdev->conn->state == CFG80211_CONN_IDLE)
997 return;
998
999 /*
1000 * Ok, so the association was made by this SME -- we don't
1001 * want it any more so deauthenticate too.
1002 */
1003
1004 if (!wdev->auth_bsses[idx])
1005 return;
1006
1007 memcpy(bssid, wdev->auth_bsses[idx]->pub.bssid, ETH_ALEN);
1008 if (__cfg80211_mlme_deauth(rdev, dev, bssid,
1009 NULL, 0, WLAN_REASON_DEAUTH_LEAVING,
1010 false)) {
1011 /* whatever -- assume gone anyway */
1012 cfg80211_unhold_bss(wdev->auth_bsses[idx]);
1013 cfg80211_put_bss(&wdev->auth_bsses[idx]->pub);
1014 wdev->auth_bsses[idx] = NULL;
1015 }
1016}
1/*
2 * SME code for cfg80211's connect emulation.
3 *
4 * Copyright 2009 Johannes Berg <johannes@sipsolutions.net>
5 * Copyright (C) 2009 Intel Corporation. All rights reserved.
6 */
7
8#include <linux/etherdevice.h>
9#include <linux/if_arp.h>
10#include <linux/slab.h>
11#include <linux/workqueue.h>
12#include <linux/wireless.h>
13#include <linux/export.h>
14#include <net/iw_handler.h>
15#include <net/cfg80211.h>
16#include <net/rtnetlink.h>
17#include "nl80211.h"
18#include "reg.h"
19
20struct cfg80211_conn {
21 struct cfg80211_connect_params params;
22 /* these are sub-states of the _CONNECTING sme_state */
23 enum {
24 CFG80211_CONN_IDLE,
25 CFG80211_CONN_SCANNING,
26 CFG80211_CONN_SCAN_AGAIN,
27 CFG80211_CONN_AUTHENTICATE_NEXT,
28 CFG80211_CONN_AUTHENTICATING,
29 CFG80211_CONN_ASSOCIATE_NEXT,
30 CFG80211_CONN_ASSOCIATING,
31 CFG80211_CONN_DEAUTH_ASSOC_FAIL,
32 } state;
33 u8 bssid[ETH_ALEN], prev_bssid[ETH_ALEN];
34 u8 *ie;
35 size_t ie_len;
36 bool auto_auth, prev_bssid_valid;
37};
38
39static bool cfg80211_is_all_idle(void)
40{
41 struct cfg80211_registered_device *rdev;
42 struct wireless_dev *wdev;
43 bool is_all_idle = true;
44
45 mutex_lock(&cfg80211_mutex);
46
47 /*
48 * All devices must be idle as otherwise if you are actively
49 * scanning some new beacon hints could be learned and would
50 * count as new regulatory hints.
51 */
52 list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
53 cfg80211_lock_rdev(rdev);
54 list_for_each_entry(wdev, &rdev->netdev_list, list) {
55 wdev_lock(wdev);
56 if (wdev->sme_state != CFG80211_SME_IDLE)
57 is_all_idle = false;
58 wdev_unlock(wdev);
59 }
60 cfg80211_unlock_rdev(rdev);
61 }
62
63 mutex_unlock(&cfg80211_mutex);
64
65 return is_all_idle;
66}
67
68static void disconnect_work(struct work_struct *work)
69{
70 if (!cfg80211_is_all_idle())
71 return;
72
73 regulatory_hint_disconnect();
74}
75
76static DECLARE_WORK(cfg80211_disconnect_work, disconnect_work);
77
78static int cfg80211_conn_scan(struct wireless_dev *wdev)
79{
80 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
81 struct cfg80211_scan_request *request;
82 int n_channels, err;
83
84 ASSERT_RTNL();
85 ASSERT_RDEV_LOCK(rdev);
86 ASSERT_WDEV_LOCK(wdev);
87
88 if (rdev->scan_req)
89 return -EBUSY;
90
91 if (wdev->conn->params.channel) {
92 n_channels = 1;
93 } else {
94 enum ieee80211_band band;
95 n_channels = 0;
96
97 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
98 if (!wdev->wiphy->bands[band])
99 continue;
100 n_channels += wdev->wiphy->bands[band]->n_channels;
101 }
102 }
103 request = kzalloc(sizeof(*request) + sizeof(request->ssids[0]) +
104 sizeof(request->channels[0]) * n_channels,
105 GFP_KERNEL);
106 if (!request)
107 return -ENOMEM;
108
109 if (wdev->conn->params.channel)
110 request->channels[0] = wdev->conn->params.channel;
111 else {
112 int i = 0, j;
113 enum ieee80211_band band;
114 struct ieee80211_supported_band *bands;
115 struct ieee80211_channel *channel;
116
117 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
118 bands = wdev->wiphy->bands[band];
119 if (!bands)
120 continue;
121 for (j = 0; j < bands->n_channels; j++) {
122 channel = &bands->channels[j];
123 if (channel->flags & IEEE80211_CHAN_DISABLED)
124 continue;
125 request->channels[i++] = channel;
126 }
127 request->rates[band] = (1 << bands->n_bitrates) - 1;
128 }
129 n_channels = i;
130 }
131 request->n_channels = n_channels;
132 request->ssids = (void *)&request->channels[n_channels];
133 request->n_ssids = 1;
134
135 memcpy(request->ssids[0].ssid, wdev->conn->params.ssid,
136 wdev->conn->params.ssid_len);
137 request->ssids[0].ssid_len = wdev->conn->params.ssid_len;
138
139 request->dev = wdev->netdev;
140 request->wiphy = &rdev->wiphy;
141
142 rdev->scan_req = request;
143
144 err = rdev->ops->scan(wdev->wiphy, wdev->netdev, request);
145 if (!err) {
146 wdev->conn->state = CFG80211_CONN_SCANNING;
147 nl80211_send_scan_start(rdev, wdev->netdev);
148 dev_hold(wdev->netdev);
149 } else {
150 rdev->scan_req = NULL;
151 kfree(request);
152 }
153 return err;
154}
155
156static int cfg80211_conn_do_work(struct wireless_dev *wdev)
157{
158 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
159 struct cfg80211_connect_params *params;
160 const u8 *prev_bssid = NULL;
161 int err;
162
163 ASSERT_WDEV_LOCK(wdev);
164
165 if (!wdev->conn)
166 return 0;
167
168 params = &wdev->conn->params;
169
170 switch (wdev->conn->state) {
171 case CFG80211_CONN_SCAN_AGAIN:
172 return cfg80211_conn_scan(wdev);
173 case CFG80211_CONN_AUTHENTICATE_NEXT:
174 BUG_ON(!rdev->ops->auth);
175 wdev->conn->state = CFG80211_CONN_AUTHENTICATING;
176 return __cfg80211_mlme_auth(rdev, wdev->netdev,
177 params->channel, params->auth_type,
178 params->bssid,
179 params->ssid, params->ssid_len,
180 NULL, 0,
181 params->key, params->key_len,
182 params->key_idx);
183 case CFG80211_CONN_ASSOCIATE_NEXT:
184 BUG_ON(!rdev->ops->assoc);
185 wdev->conn->state = CFG80211_CONN_ASSOCIATING;
186 if (wdev->conn->prev_bssid_valid)
187 prev_bssid = wdev->conn->prev_bssid;
188 err = __cfg80211_mlme_assoc(rdev, wdev->netdev,
189 params->channel, params->bssid,
190 prev_bssid,
191 params->ssid, params->ssid_len,
192 params->ie, params->ie_len,
193 false, ¶ms->crypto,
194 params->flags, ¶ms->ht_capa,
195 ¶ms->ht_capa_mask);
196 if (err)
197 __cfg80211_mlme_deauth(rdev, wdev->netdev, params->bssid,
198 NULL, 0,
199 WLAN_REASON_DEAUTH_LEAVING,
200 false);
201 return err;
202 case CFG80211_CONN_DEAUTH_ASSOC_FAIL:
203 __cfg80211_mlme_deauth(rdev, wdev->netdev, params->bssid,
204 NULL, 0,
205 WLAN_REASON_DEAUTH_LEAVING, false);
206 /* return an error so that we call __cfg80211_connect_result() */
207 return -EINVAL;
208 default:
209 return 0;
210 }
211}
212
213void cfg80211_conn_work(struct work_struct *work)
214{
215 struct cfg80211_registered_device *rdev =
216 container_of(work, struct cfg80211_registered_device, conn_work);
217 struct wireless_dev *wdev;
218 u8 bssid_buf[ETH_ALEN], *bssid = NULL;
219
220 rtnl_lock();
221 cfg80211_lock_rdev(rdev);
222 mutex_lock(&rdev->devlist_mtx);
223
224 list_for_each_entry(wdev, &rdev->netdev_list, list) {
225 wdev_lock(wdev);
226 if (!netif_running(wdev->netdev)) {
227 wdev_unlock(wdev);
228 continue;
229 }
230 if (wdev->sme_state != CFG80211_SME_CONNECTING) {
231 wdev_unlock(wdev);
232 continue;
233 }
234 if (wdev->conn->params.bssid) {
235 memcpy(bssid_buf, wdev->conn->params.bssid, ETH_ALEN);
236 bssid = bssid_buf;
237 }
238 if (cfg80211_conn_do_work(wdev))
239 __cfg80211_connect_result(
240 wdev->netdev, bssid,
241 NULL, 0, NULL, 0,
242 WLAN_STATUS_UNSPECIFIED_FAILURE,
243 false, NULL);
244 wdev_unlock(wdev);
245 }
246
247 mutex_unlock(&rdev->devlist_mtx);
248 cfg80211_unlock_rdev(rdev);
249 rtnl_unlock();
250}
251
252static struct cfg80211_bss *cfg80211_get_conn_bss(struct wireless_dev *wdev)
253{
254 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
255 struct cfg80211_bss *bss;
256 u16 capa = WLAN_CAPABILITY_ESS;
257
258 ASSERT_WDEV_LOCK(wdev);
259
260 if (wdev->conn->params.privacy)
261 capa |= WLAN_CAPABILITY_PRIVACY;
262
263 bss = cfg80211_get_bss(wdev->wiphy, wdev->conn->params.channel,
264 wdev->conn->params.bssid,
265 wdev->conn->params.ssid,
266 wdev->conn->params.ssid_len,
267 WLAN_CAPABILITY_ESS | WLAN_CAPABILITY_PRIVACY,
268 capa);
269 if (!bss)
270 return NULL;
271
272 memcpy(wdev->conn->bssid, bss->bssid, ETH_ALEN);
273 wdev->conn->params.bssid = wdev->conn->bssid;
274 wdev->conn->params.channel = bss->channel;
275 wdev->conn->state = CFG80211_CONN_AUTHENTICATE_NEXT;
276 schedule_work(&rdev->conn_work);
277
278 return bss;
279}
280
281static void __cfg80211_sme_scan_done(struct net_device *dev)
282{
283 struct wireless_dev *wdev = dev->ieee80211_ptr;
284 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
285 struct cfg80211_bss *bss;
286
287 ASSERT_WDEV_LOCK(wdev);
288
289 if (wdev->sme_state != CFG80211_SME_CONNECTING)
290 return;
291
292 if (!wdev->conn)
293 return;
294
295 if (wdev->conn->state != CFG80211_CONN_SCANNING &&
296 wdev->conn->state != CFG80211_CONN_SCAN_AGAIN)
297 return;
298
299 bss = cfg80211_get_conn_bss(wdev);
300 if (bss) {
301 cfg80211_put_bss(bss);
302 } else {
303 /* not found */
304 if (wdev->conn->state == CFG80211_CONN_SCAN_AGAIN)
305 schedule_work(&rdev->conn_work);
306 else
307 __cfg80211_connect_result(
308 wdev->netdev,
309 wdev->conn->params.bssid,
310 NULL, 0, NULL, 0,
311 WLAN_STATUS_UNSPECIFIED_FAILURE,
312 false, NULL);
313 }
314}
315
316void cfg80211_sme_scan_done(struct net_device *dev)
317{
318 struct wireless_dev *wdev = dev->ieee80211_ptr;
319
320 mutex_lock(&wiphy_to_dev(wdev->wiphy)->devlist_mtx);
321 wdev_lock(wdev);
322 __cfg80211_sme_scan_done(dev);
323 wdev_unlock(wdev);
324 mutex_unlock(&wiphy_to_dev(wdev->wiphy)->devlist_mtx);
325}
326
327void cfg80211_sme_rx_auth(struct net_device *dev,
328 const u8 *buf, size_t len)
329{
330 struct wireless_dev *wdev = dev->ieee80211_ptr;
331 struct wiphy *wiphy = wdev->wiphy;
332 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
333 struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)buf;
334 u16 status_code = le16_to_cpu(mgmt->u.auth.status_code);
335
336 ASSERT_WDEV_LOCK(wdev);
337
338 /* should only RX auth frames when connecting */
339 if (wdev->sme_state != CFG80211_SME_CONNECTING)
340 return;
341
342 if (WARN_ON(!wdev->conn))
343 return;
344
345 if (status_code == WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG &&
346 wdev->conn->auto_auth &&
347 wdev->conn->params.auth_type != NL80211_AUTHTYPE_NETWORK_EAP) {
348 /* select automatically between only open, shared, leap */
349 switch (wdev->conn->params.auth_type) {
350 case NL80211_AUTHTYPE_OPEN_SYSTEM:
351 if (wdev->connect_keys)
352 wdev->conn->params.auth_type =
353 NL80211_AUTHTYPE_SHARED_KEY;
354 else
355 wdev->conn->params.auth_type =
356 NL80211_AUTHTYPE_NETWORK_EAP;
357 break;
358 case NL80211_AUTHTYPE_SHARED_KEY:
359 wdev->conn->params.auth_type =
360 NL80211_AUTHTYPE_NETWORK_EAP;
361 break;
362 default:
363 /* huh? */
364 wdev->conn->params.auth_type =
365 NL80211_AUTHTYPE_OPEN_SYSTEM;
366 break;
367 }
368 wdev->conn->state = CFG80211_CONN_AUTHENTICATE_NEXT;
369 schedule_work(&rdev->conn_work);
370 } else if (status_code != WLAN_STATUS_SUCCESS) {
371 __cfg80211_connect_result(dev, mgmt->bssid, NULL, 0, NULL, 0,
372 status_code, false, NULL);
373 } else if (wdev->sme_state == CFG80211_SME_CONNECTING &&
374 wdev->conn->state == CFG80211_CONN_AUTHENTICATING) {
375 wdev->conn->state = CFG80211_CONN_ASSOCIATE_NEXT;
376 schedule_work(&rdev->conn_work);
377 }
378}
379
380bool cfg80211_sme_failed_reassoc(struct wireless_dev *wdev)
381{
382 struct wiphy *wiphy = wdev->wiphy;
383 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
384
385 if (WARN_ON(!wdev->conn))
386 return false;
387
388 if (!wdev->conn->prev_bssid_valid)
389 return false;
390
391 /*
392 * Some stupid APs don't accept reassoc, so we
393 * need to fall back to trying regular assoc.
394 */
395 wdev->conn->prev_bssid_valid = false;
396 wdev->conn->state = CFG80211_CONN_ASSOCIATE_NEXT;
397 schedule_work(&rdev->conn_work);
398
399 return true;
400}
401
402void cfg80211_sme_failed_assoc(struct wireless_dev *wdev)
403{
404 struct wiphy *wiphy = wdev->wiphy;
405 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
406
407 wdev->conn->state = CFG80211_CONN_DEAUTH_ASSOC_FAIL;
408 schedule_work(&rdev->conn_work);
409}
410
411void __cfg80211_connect_result(struct net_device *dev, const u8 *bssid,
412 const u8 *req_ie, size_t req_ie_len,
413 const u8 *resp_ie, size_t resp_ie_len,
414 u16 status, bool wextev,
415 struct cfg80211_bss *bss)
416{
417 struct wireless_dev *wdev = dev->ieee80211_ptr;
418 u8 *country_ie;
419#ifdef CONFIG_CFG80211_WEXT
420 union iwreq_data wrqu;
421#endif
422
423 ASSERT_WDEV_LOCK(wdev);
424
425 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION &&
426 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT))
427 return;
428
429 if (wdev->sme_state != CFG80211_SME_CONNECTING)
430 return;
431
432 nl80211_send_connect_result(wiphy_to_dev(wdev->wiphy), dev,
433 bssid, req_ie, req_ie_len,
434 resp_ie, resp_ie_len,
435 status, GFP_KERNEL);
436
437#ifdef CONFIG_CFG80211_WEXT
438 if (wextev) {
439 if (req_ie && status == WLAN_STATUS_SUCCESS) {
440 memset(&wrqu, 0, sizeof(wrqu));
441 wrqu.data.length = req_ie_len;
442 wireless_send_event(dev, IWEVASSOCREQIE, &wrqu, req_ie);
443 }
444
445 if (resp_ie && status == WLAN_STATUS_SUCCESS) {
446 memset(&wrqu, 0, sizeof(wrqu));
447 wrqu.data.length = resp_ie_len;
448 wireless_send_event(dev, IWEVASSOCRESPIE, &wrqu, resp_ie);
449 }
450
451 memset(&wrqu, 0, sizeof(wrqu));
452 wrqu.ap_addr.sa_family = ARPHRD_ETHER;
453 if (bssid && status == WLAN_STATUS_SUCCESS) {
454 memcpy(wrqu.ap_addr.sa_data, bssid, ETH_ALEN);
455 memcpy(wdev->wext.prev_bssid, bssid, ETH_ALEN);
456 wdev->wext.prev_bssid_valid = true;
457 }
458 wireless_send_event(dev, SIOCGIWAP, &wrqu, NULL);
459 }
460#endif
461
462 if (wdev->current_bss) {
463 cfg80211_unhold_bss(wdev->current_bss);
464 cfg80211_put_bss(&wdev->current_bss->pub);
465 wdev->current_bss = NULL;
466 }
467
468 if (wdev->conn)
469 wdev->conn->state = CFG80211_CONN_IDLE;
470
471 if (status != WLAN_STATUS_SUCCESS) {
472 wdev->sme_state = CFG80211_SME_IDLE;
473 if (wdev->conn)
474 kfree(wdev->conn->ie);
475 kfree(wdev->conn);
476 wdev->conn = NULL;
477 kfree(wdev->connect_keys);
478 wdev->connect_keys = NULL;
479 wdev->ssid_len = 0;
480 cfg80211_put_bss(bss);
481 return;
482 }
483
484 if (!bss)
485 bss = cfg80211_get_bss(wdev->wiphy,
486 wdev->conn ? wdev->conn->params.channel :
487 NULL,
488 bssid,
489 wdev->ssid, wdev->ssid_len,
490 WLAN_CAPABILITY_ESS,
491 WLAN_CAPABILITY_ESS);
492
493 if (WARN_ON(!bss))
494 return;
495
496 cfg80211_hold_bss(bss_from_pub(bss));
497 wdev->current_bss = bss_from_pub(bss);
498
499 wdev->sme_state = CFG80211_SME_CONNECTED;
500 cfg80211_upload_connect_keys(wdev);
501
502 country_ie = (u8 *) ieee80211_bss_get_ie(bss, WLAN_EID_COUNTRY);
503
504 if (!country_ie)
505 return;
506
507 /*
508 * ieee80211_bss_get_ie() ensures we can access:
509 * - country_ie + 2, the start of the country ie data, and
510 * - and country_ie[1] which is the IE length
511 */
512 regulatory_hint_11d(wdev->wiphy,
513 bss->channel->band,
514 country_ie + 2,
515 country_ie[1]);
516}
517
518void cfg80211_connect_result(struct net_device *dev, const u8 *bssid,
519 const u8 *req_ie, size_t req_ie_len,
520 const u8 *resp_ie, size_t resp_ie_len,
521 u16 status, gfp_t gfp)
522{
523 struct wireless_dev *wdev = dev->ieee80211_ptr;
524 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
525 struct cfg80211_event *ev;
526 unsigned long flags;
527
528 CFG80211_DEV_WARN_ON(wdev->sme_state != CFG80211_SME_CONNECTING);
529
530 ev = kzalloc(sizeof(*ev) + req_ie_len + resp_ie_len, gfp);
531 if (!ev)
532 return;
533
534 ev->type = EVENT_CONNECT_RESULT;
535 if (bssid)
536 memcpy(ev->cr.bssid, bssid, ETH_ALEN);
537 if (req_ie_len) {
538 ev->cr.req_ie = ((u8 *)ev) + sizeof(*ev);
539 ev->cr.req_ie_len = req_ie_len;
540 memcpy((void *)ev->cr.req_ie, req_ie, req_ie_len);
541 }
542 if (resp_ie_len) {
543 ev->cr.resp_ie = ((u8 *)ev) + sizeof(*ev) + req_ie_len;
544 ev->cr.resp_ie_len = resp_ie_len;
545 memcpy((void *)ev->cr.resp_ie, resp_ie, resp_ie_len);
546 }
547 ev->cr.status = status;
548
549 spin_lock_irqsave(&wdev->event_lock, flags);
550 list_add_tail(&ev->list, &wdev->event_list);
551 spin_unlock_irqrestore(&wdev->event_lock, flags);
552 queue_work(cfg80211_wq, &rdev->event_work);
553}
554EXPORT_SYMBOL(cfg80211_connect_result);
555
556void __cfg80211_roamed(struct wireless_dev *wdev,
557 struct cfg80211_bss *bss,
558 const u8 *req_ie, size_t req_ie_len,
559 const u8 *resp_ie, size_t resp_ie_len)
560{
561#ifdef CONFIG_CFG80211_WEXT
562 union iwreq_data wrqu;
563#endif
564 ASSERT_WDEV_LOCK(wdev);
565
566 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION &&
567 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT))
568 goto out;
569
570 if (wdev->sme_state != CFG80211_SME_CONNECTED)
571 goto out;
572
573 /* internal error -- how did we get to CONNECTED w/o BSS? */
574 if (WARN_ON(!wdev->current_bss)) {
575 goto out;
576 }
577
578 cfg80211_unhold_bss(wdev->current_bss);
579 cfg80211_put_bss(&wdev->current_bss->pub);
580 wdev->current_bss = NULL;
581
582 cfg80211_hold_bss(bss_from_pub(bss));
583 wdev->current_bss = bss_from_pub(bss);
584
585 nl80211_send_roamed(wiphy_to_dev(wdev->wiphy), wdev->netdev, bss->bssid,
586 req_ie, req_ie_len, resp_ie, resp_ie_len,
587 GFP_KERNEL);
588
589#ifdef CONFIG_CFG80211_WEXT
590 if (req_ie) {
591 memset(&wrqu, 0, sizeof(wrqu));
592 wrqu.data.length = req_ie_len;
593 wireless_send_event(wdev->netdev, IWEVASSOCREQIE,
594 &wrqu, req_ie);
595 }
596
597 if (resp_ie) {
598 memset(&wrqu, 0, sizeof(wrqu));
599 wrqu.data.length = resp_ie_len;
600 wireless_send_event(wdev->netdev, IWEVASSOCRESPIE,
601 &wrqu, resp_ie);
602 }
603
604 memset(&wrqu, 0, sizeof(wrqu));
605 wrqu.ap_addr.sa_family = ARPHRD_ETHER;
606 memcpy(wrqu.ap_addr.sa_data, bss->bssid, ETH_ALEN);
607 memcpy(wdev->wext.prev_bssid, bss->bssid, ETH_ALEN);
608 wdev->wext.prev_bssid_valid = true;
609 wireless_send_event(wdev->netdev, SIOCGIWAP, &wrqu, NULL);
610#endif
611
612 return;
613out:
614 cfg80211_put_bss(bss);
615}
616
617void cfg80211_roamed(struct net_device *dev,
618 struct ieee80211_channel *channel,
619 const u8 *bssid,
620 const u8 *req_ie, size_t req_ie_len,
621 const u8 *resp_ie, size_t resp_ie_len, gfp_t gfp)
622{
623 struct wireless_dev *wdev = dev->ieee80211_ptr;
624 struct cfg80211_bss *bss;
625
626 CFG80211_DEV_WARN_ON(wdev->sme_state != CFG80211_SME_CONNECTED);
627
628 bss = cfg80211_get_bss(wdev->wiphy, channel, bssid, wdev->ssid,
629 wdev->ssid_len, WLAN_CAPABILITY_ESS,
630 WLAN_CAPABILITY_ESS);
631 if (WARN_ON(!bss))
632 return;
633
634 cfg80211_roamed_bss(dev, bss, req_ie, req_ie_len, resp_ie,
635 resp_ie_len, gfp);
636}
637EXPORT_SYMBOL(cfg80211_roamed);
638
639void cfg80211_roamed_bss(struct net_device *dev,
640 struct cfg80211_bss *bss, const u8 *req_ie,
641 size_t req_ie_len, const u8 *resp_ie,
642 size_t resp_ie_len, gfp_t gfp)
643{
644 struct wireless_dev *wdev = dev->ieee80211_ptr;
645 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
646 struct cfg80211_event *ev;
647 unsigned long flags;
648
649 CFG80211_DEV_WARN_ON(wdev->sme_state != CFG80211_SME_CONNECTED);
650
651 if (WARN_ON(!bss))
652 return;
653
654 ev = kzalloc(sizeof(*ev) + req_ie_len + resp_ie_len, gfp);
655 if (!ev) {
656 cfg80211_put_bss(bss);
657 return;
658 }
659
660 ev->type = EVENT_ROAMED;
661 ev->rm.req_ie = ((u8 *)ev) + sizeof(*ev);
662 ev->rm.req_ie_len = req_ie_len;
663 memcpy((void *)ev->rm.req_ie, req_ie, req_ie_len);
664 ev->rm.resp_ie = ((u8 *)ev) + sizeof(*ev) + req_ie_len;
665 ev->rm.resp_ie_len = resp_ie_len;
666 memcpy((void *)ev->rm.resp_ie, resp_ie, resp_ie_len);
667 ev->rm.bss = bss;
668
669 spin_lock_irqsave(&wdev->event_lock, flags);
670 list_add_tail(&ev->list, &wdev->event_list);
671 spin_unlock_irqrestore(&wdev->event_lock, flags);
672 queue_work(cfg80211_wq, &rdev->event_work);
673}
674EXPORT_SYMBOL(cfg80211_roamed_bss);
675
676void __cfg80211_disconnected(struct net_device *dev, const u8 *ie,
677 size_t ie_len, u16 reason, bool from_ap)
678{
679 struct wireless_dev *wdev = dev->ieee80211_ptr;
680 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
681 int i;
682#ifdef CONFIG_CFG80211_WEXT
683 union iwreq_data wrqu;
684#endif
685
686 ASSERT_WDEV_LOCK(wdev);
687
688 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION &&
689 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT))
690 return;
691
692 if (wdev->sme_state != CFG80211_SME_CONNECTED)
693 return;
694
695 if (wdev->current_bss) {
696 cfg80211_unhold_bss(wdev->current_bss);
697 cfg80211_put_bss(&wdev->current_bss->pub);
698 }
699
700 wdev->current_bss = NULL;
701 wdev->sme_state = CFG80211_SME_IDLE;
702 wdev->ssid_len = 0;
703
704 if (wdev->conn) {
705 kfree(wdev->conn->ie);
706 wdev->conn->ie = NULL;
707 kfree(wdev->conn);
708 wdev->conn = NULL;
709 }
710
711 nl80211_send_disconnected(rdev, dev, reason, ie, ie_len, from_ap);
712
713 /*
714 * Delete all the keys ... pairwise keys can't really
715 * exist any more anyway, but default keys might.
716 */
717 if (rdev->ops->del_key)
718 for (i = 0; i < 6; i++)
719 rdev->ops->del_key(wdev->wiphy, dev, i, false, NULL);
720
721#ifdef CONFIG_CFG80211_WEXT
722 memset(&wrqu, 0, sizeof(wrqu));
723 wrqu.ap_addr.sa_family = ARPHRD_ETHER;
724 wireless_send_event(dev, SIOCGIWAP, &wrqu, NULL);
725 wdev->wext.connect.ssid_len = 0;
726#endif
727
728 schedule_work(&cfg80211_disconnect_work);
729}
730
731void cfg80211_disconnected(struct net_device *dev, u16 reason,
732 u8 *ie, size_t ie_len, gfp_t gfp)
733{
734 struct wireless_dev *wdev = dev->ieee80211_ptr;
735 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
736 struct cfg80211_event *ev;
737 unsigned long flags;
738
739 CFG80211_DEV_WARN_ON(wdev->sme_state != CFG80211_SME_CONNECTED);
740
741 ev = kzalloc(sizeof(*ev) + ie_len, gfp);
742 if (!ev)
743 return;
744
745 ev->type = EVENT_DISCONNECTED;
746 ev->dc.ie = ((u8 *)ev) + sizeof(*ev);
747 ev->dc.ie_len = ie_len;
748 memcpy((void *)ev->dc.ie, ie, ie_len);
749 ev->dc.reason = reason;
750
751 spin_lock_irqsave(&wdev->event_lock, flags);
752 list_add_tail(&ev->list, &wdev->event_list);
753 spin_unlock_irqrestore(&wdev->event_lock, flags);
754 queue_work(cfg80211_wq, &rdev->event_work);
755}
756EXPORT_SYMBOL(cfg80211_disconnected);
757
758int __cfg80211_connect(struct cfg80211_registered_device *rdev,
759 struct net_device *dev,
760 struct cfg80211_connect_params *connect,
761 struct cfg80211_cached_keys *connkeys,
762 const u8 *prev_bssid)
763{
764 struct wireless_dev *wdev = dev->ieee80211_ptr;
765 struct cfg80211_bss *bss = NULL;
766 int err;
767
768 ASSERT_WDEV_LOCK(wdev);
769
770 if (wdev->sme_state != CFG80211_SME_IDLE)
771 return -EALREADY;
772
773 if (WARN_ON(wdev->connect_keys)) {
774 kfree(wdev->connect_keys);
775 wdev->connect_keys = NULL;
776 }
777
778 cfg80211_oper_and_ht_capa(&connect->ht_capa_mask,
779 rdev->wiphy.ht_capa_mod_mask);
780
781 if (connkeys && connkeys->def >= 0) {
782 int idx;
783 u32 cipher;
784
785 idx = connkeys->def;
786 cipher = connkeys->params[idx].cipher;
787 /* If given a WEP key we may need it for shared key auth */
788 if (cipher == WLAN_CIPHER_SUITE_WEP40 ||
789 cipher == WLAN_CIPHER_SUITE_WEP104) {
790 connect->key_idx = idx;
791 connect->key = connkeys->params[idx].key;
792 connect->key_len = connkeys->params[idx].key_len;
793
794 /*
795 * If ciphers are not set (e.g. when going through
796 * iwconfig), we have to set them appropriately here.
797 */
798 if (connect->crypto.cipher_group == 0)
799 connect->crypto.cipher_group = cipher;
800
801 if (connect->crypto.n_ciphers_pairwise == 0) {
802 connect->crypto.n_ciphers_pairwise = 1;
803 connect->crypto.ciphers_pairwise[0] = cipher;
804 }
805 }
806 }
807
808 if (!rdev->ops->connect) {
809 if (!rdev->ops->auth || !rdev->ops->assoc)
810 return -EOPNOTSUPP;
811
812 if (WARN_ON(wdev->conn))
813 return -EINPROGRESS;
814
815 wdev->conn = kzalloc(sizeof(*wdev->conn), GFP_KERNEL);
816 if (!wdev->conn)
817 return -ENOMEM;
818
819 /*
820 * Copy all parameters, and treat explicitly IEs, BSSID, SSID.
821 */
822 memcpy(&wdev->conn->params, connect, sizeof(*connect));
823 if (connect->bssid) {
824 wdev->conn->params.bssid = wdev->conn->bssid;
825 memcpy(wdev->conn->bssid, connect->bssid, ETH_ALEN);
826 }
827
828 if (connect->ie) {
829 wdev->conn->ie = kmemdup(connect->ie, connect->ie_len,
830 GFP_KERNEL);
831 wdev->conn->params.ie = wdev->conn->ie;
832 if (!wdev->conn->ie) {
833 kfree(wdev->conn);
834 wdev->conn = NULL;
835 return -ENOMEM;
836 }
837 }
838
839 if (connect->auth_type == NL80211_AUTHTYPE_AUTOMATIC) {
840 wdev->conn->auto_auth = true;
841 /* start with open system ... should mostly work */
842 wdev->conn->params.auth_type =
843 NL80211_AUTHTYPE_OPEN_SYSTEM;
844 } else {
845 wdev->conn->auto_auth = false;
846 }
847
848 memcpy(wdev->ssid, connect->ssid, connect->ssid_len);
849 wdev->ssid_len = connect->ssid_len;
850 wdev->conn->params.ssid = wdev->ssid;
851 wdev->conn->params.ssid_len = connect->ssid_len;
852
853 /* see if we have the bss already */
854 bss = cfg80211_get_conn_bss(wdev);
855
856 wdev->sme_state = CFG80211_SME_CONNECTING;
857 wdev->connect_keys = connkeys;
858
859 if (prev_bssid) {
860 memcpy(wdev->conn->prev_bssid, prev_bssid, ETH_ALEN);
861 wdev->conn->prev_bssid_valid = true;
862 }
863
864 /* we're good if we have a matching bss struct */
865 if (bss) {
866 wdev->conn->state = CFG80211_CONN_AUTHENTICATE_NEXT;
867 err = cfg80211_conn_do_work(wdev);
868 cfg80211_put_bss(bss);
869 } else {
870 /* otherwise we'll need to scan for the AP first */
871 err = cfg80211_conn_scan(wdev);
872 /*
873 * If we can't scan right now, then we need to scan again
874 * after the current scan finished, since the parameters
875 * changed (unless we find a good AP anyway).
876 */
877 if (err == -EBUSY) {
878 err = 0;
879 wdev->conn->state = CFG80211_CONN_SCAN_AGAIN;
880 }
881 }
882 if (err) {
883 kfree(wdev->conn->ie);
884 kfree(wdev->conn);
885 wdev->conn = NULL;
886 wdev->sme_state = CFG80211_SME_IDLE;
887 wdev->connect_keys = NULL;
888 wdev->ssid_len = 0;
889 }
890
891 return err;
892 } else {
893 wdev->sme_state = CFG80211_SME_CONNECTING;
894 wdev->connect_keys = connkeys;
895 err = rdev->ops->connect(&rdev->wiphy, dev, connect);
896 if (err) {
897 wdev->connect_keys = NULL;
898 wdev->sme_state = CFG80211_SME_IDLE;
899 return err;
900 }
901
902 memcpy(wdev->ssid, connect->ssid, connect->ssid_len);
903 wdev->ssid_len = connect->ssid_len;
904
905 return 0;
906 }
907}
908
909int cfg80211_connect(struct cfg80211_registered_device *rdev,
910 struct net_device *dev,
911 struct cfg80211_connect_params *connect,
912 struct cfg80211_cached_keys *connkeys)
913{
914 int err;
915
916 mutex_lock(&rdev->devlist_mtx);
917 wdev_lock(dev->ieee80211_ptr);
918 err = __cfg80211_connect(rdev, dev, connect, connkeys, NULL);
919 wdev_unlock(dev->ieee80211_ptr);
920 mutex_unlock(&rdev->devlist_mtx);
921
922 return err;
923}
924
925int __cfg80211_disconnect(struct cfg80211_registered_device *rdev,
926 struct net_device *dev, u16 reason, bool wextev)
927{
928 struct wireless_dev *wdev = dev->ieee80211_ptr;
929 int err;
930
931 ASSERT_WDEV_LOCK(wdev);
932
933 if (wdev->sme_state == CFG80211_SME_IDLE)
934 return -EINVAL;
935
936 kfree(wdev->connect_keys);
937 wdev->connect_keys = NULL;
938
939 if (!rdev->ops->disconnect) {
940 if (!rdev->ops->deauth)
941 return -EOPNOTSUPP;
942
943 /* was it connected by userspace SME? */
944 if (!wdev->conn) {
945 cfg80211_mlme_down(rdev, dev);
946 return 0;
947 }
948
949 if (wdev->sme_state == CFG80211_SME_CONNECTING &&
950 (wdev->conn->state == CFG80211_CONN_SCANNING ||
951 wdev->conn->state == CFG80211_CONN_SCAN_AGAIN)) {
952 wdev->sme_state = CFG80211_SME_IDLE;
953 kfree(wdev->conn->ie);
954 kfree(wdev->conn);
955 wdev->conn = NULL;
956 wdev->ssid_len = 0;
957 return 0;
958 }
959
960 /* wdev->conn->params.bssid must be set if > SCANNING */
961 err = __cfg80211_mlme_deauth(rdev, dev,
962 wdev->conn->params.bssid,
963 NULL, 0, reason, false);
964 if (err)
965 return err;
966 } else {
967 err = rdev->ops->disconnect(&rdev->wiphy, dev, reason);
968 if (err)
969 return err;
970 }
971
972 if (wdev->sme_state == CFG80211_SME_CONNECTED)
973 __cfg80211_disconnected(dev, NULL, 0, 0, false);
974 else if (wdev->sme_state == CFG80211_SME_CONNECTING)
975 __cfg80211_connect_result(dev, NULL, NULL, 0, NULL, 0,
976 WLAN_STATUS_UNSPECIFIED_FAILURE,
977 wextev, NULL);
978
979 return 0;
980}
981
982int cfg80211_disconnect(struct cfg80211_registered_device *rdev,
983 struct net_device *dev,
984 u16 reason, bool wextev)
985{
986 int err;
987
988 wdev_lock(dev->ieee80211_ptr);
989 err = __cfg80211_disconnect(rdev, dev, reason, wextev);
990 wdev_unlock(dev->ieee80211_ptr);
991
992 return err;
993}
994
995void cfg80211_sme_disassoc(struct net_device *dev,
996 struct cfg80211_internal_bss *bss)
997{
998 struct wireless_dev *wdev = dev->ieee80211_ptr;
999 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
1000 u8 bssid[ETH_ALEN];
1001
1002 ASSERT_WDEV_LOCK(wdev);
1003
1004 if (!wdev->conn)
1005 return;
1006
1007 if (wdev->conn->state == CFG80211_CONN_IDLE)
1008 return;
1009
1010 /*
1011 * Ok, so the association was made by this SME -- we don't
1012 * want it any more so deauthenticate too.
1013 */
1014
1015 memcpy(bssid, bss->pub.bssid, ETH_ALEN);
1016
1017 __cfg80211_mlme_deauth(rdev, dev, bssid, NULL, 0,
1018 WLAN_REASON_DEAUTH_LEAVING, false);
1019}