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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>
19#include "nl80211.h"
20#include "reg.h"
21#include "rdev-ops.h"
22
23
24
25
26
27
28
29struct cfg80211_conn {
30 struct cfg80211_connect_params params;
31
32 enum {
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,
41 CFG80211_CONN_DEAUTH,
42 CFG80211_CONN_CONNECTED,
43 } state;
44 u8 bssid[ETH_ALEN], prev_bssid[ETH_ALEN];
45 u8 *ie;
46 size_t ie_len;
47 bool auto_auth, prev_bssid_valid;
48};
49
50static void cfg80211_sme_free(struct wireless_dev *wdev)
51{
52 if (!wdev->conn)
53 return;
54
55 kfree(wdev->conn->ie);
56 kfree(wdev->conn);
57 wdev->conn = NULL;
58}
59
60static int cfg80211_conn_scan(struct wireless_dev *wdev)
61{
62 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
63 struct cfg80211_scan_request *request;
64 int n_channels, err;
65
66 ASSERT_RTNL();
67 ASSERT_RDEV_LOCK(rdev);
68 ASSERT_WDEV_LOCK(wdev);
69
70 if (rdev->scan_req)
71 return -EBUSY;
72
73 if (wdev->conn->params.channel) {
74 n_channels = 1;
75 } else {
76 enum ieee80211_band band;
77 n_channels = 0;
78
79 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
80 if (!wdev->wiphy->bands[band])
81 continue;
82 n_channels += wdev->wiphy->bands[band]->n_channels;
83 }
84 }
85 request = kzalloc(sizeof(*request) + sizeof(request->ssids[0]) +
86 sizeof(request->channels[0]) * n_channels,
87 GFP_KERNEL);
88 if (!request)
89 return -ENOMEM;
90
91 if (wdev->conn->params.channel)
92 request->channels[0] = wdev->conn->params.channel;
93 else {
94 int i = 0, j;
95 enum ieee80211_band band;
96 struct ieee80211_supported_band *bands;
97 struct ieee80211_channel *channel;
98
99 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
100 bands = wdev->wiphy->bands[band];
101 if (!bands)
102 continue;
103 for (j = 0; j < bands->n_channels; j++) {
104 channel = &bands->channels[j];
105 if (channel->flags & IEEE80211_CHAN_DISABLED)
106 continue;
107 request->channels[i++] = channel;
108 }
109 request->rates[band] = (1 << bands->n_bitrates) - 1;
110 }
111 n_channels = i;
112 }
113 request->n_channels = n_channels;
114 request->ssids = (void *)&request->channels[n_channels];
115 request->n_ssids = 1;
116
117 memcpy(request->ssids[0].ssid, wdev->conn->params.ssid,
118 wdev->conn->params.ssid_len);
119 request->ssids[0].ssid_len = wdev->conn->params.ssid_len;
120
121 request->wdev = wdev;
122 request->wiphy = &rdev->wiphy;
123 request->scan_start = jiffies;
124
125 rdev->scan_req = request;
126
127 err = rdev_scan(rdev, request);
128 if (!err) {
129 wdev->conn->state = CFG80211_CONN_SCANNING;
130 nl80211_send_scan_start(rdev, wdev);
131 dev_hold(wdev->netdev);
132 } else {
133 rdev->scan_req = NULL;
134 kfree(request);
135 }
136 return err;
137}
138
139static int cfg80211_conn_do_work(struct wireless_dev *wdev)
140{
141 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
142 struct cfg80211_connect_params *params;
143 struct cfg80211_assoc_request req = {};
144 int err;
145
146 ASSERT_WDEV_LOCK(wdev);
147
148 if (!wdev->conn)
149 return 0;
150
151 params = &wdev->conn->params;
152
153 switch (wdev->conn->state) {
154 case CFG80211_CONN_SCANNING:
155
156 return -ENOENT;
157 case CFG80211_CONN_SCAN_AGAIN:
158 return cfg80211_conn_scan(wdev);
159 case CFG80211_CONN_AUTHENTICATE_NEXT:
160 BUG_ON(!rdev->ops->auth);
161 wdev->conn->state = CFG80211_CONN_AUTHENTICATING;
162 return cfg80211_mlme_auth(rdev, wdev->netdev,
163 params->channel, params->auth_type,
164 params->bssid,
165 params->ssid, params->ssid_len,
166 NULL, 0,
167 params->key, params->key_len,
168 params->key_idx, NULL, 0);
169 case CFG80211_CONN_AUTH_FAILED:
170 return -ENOTCONN;
171 case CFG80211_CONN_ASSOCIATE_NEXT:
172 BUG_ON(!rdev->ops->assoc);
173 wdev->conn->state = CFG80211_CONN_ASSOCIATING;
174 if (wdev->conn->prev_bssid_valid)
175 req.prev_bssid = wdev->conn->prev_bssid;
176 req.ie = params->ie;
177 req.ie_len = params->ie_len;
178 req.use_mfp = params->mfp != NL80211_MFP_NO;
179 req.crypto = params->crypto;
180 req.flags = params->flags;
181 req.ht_capa = params->ht_capa;
182 req.ht_capa_mask = params->ht_capa_mask;
183 req.vht_capa = params->vht_capa;
184 req.vht_capa_mask = params->vht_capa_mask;
185
186 err = cfg80211_mlme_assoc(rdev, wdev->netdev, params->channel,
187 params->bssid, params->ssid,
188 params->ssid_len, &req);
189 if (err)
190 cfg80211_mlme_deauth(rdev, wdev->netdev, params->bssid,
191 NULL, 0,
192 WLAN_REASON_DEAUTH_LEAVING,
193 false);
194 return err;
195 case CFG80211_CONN_ASSOC_FAILED:
196 cfg80211_mlme_deauth(rdev, wdev->netdev, params->bssid,
197 NULL, 0,
198 WLAN_REASON_DEAUTH_LEAVING, false);
199 return -ENOTCONN;
200 case CFG80211_CONN_DEAUTH:
201 cfg80211_mlme_deauth(rdev, wdev->netdev, params->bssid,
202 NULL, 0,
203 WLAN_REASON_DEAUTH_LEAVING, false);
204
205 cfg80211_sme_free(wdev);
206 return 0;
207 default:
208 return 0;
209 }
210}
211
212void cfg80211_conn_work(struct work_struct *work)
213{
214 struct cfg80211_registered_device *rdev =
215 container_of(work, struct cfg80211_registered_device, conn_work);
216 struct wireless_dev *wdev;
217 u8 bssid_buf[ETH_ALEN], *bssid = NULL;
218
219 rtnl_lock();
220
221 list_for_each_entry(wdev, &rdev->wdev_list, list) {
222 if (!wdev->netdev)
223 continue;
224
225 wdev_lock(wdev);
226 if (!netif_running(wdev->netdev)) {
227 wdev_unlock(wdev);
228 continue;
229 }
230 if (!wdev->conn ||
231 wdev->conn->state == CFG80211_CONN_CONNECTED) {
232 wdev_unlock(wdev);
233 continue;
234 }
235 if (wdev->conn->params.bssid) {
236 memcpy(bssid_buf, wdev->conn->params.bssid, ETH_ALEN);
237 bssid = bssid_buf;
238 }
239 if (cfg80211_conn_do_work(wdev)) {
240 __cfg80211_connect_result(
241 wdev->netdev, bssid,
242 NULL, 0, NULL, 0,
243 WLAN_STATUS_UNSPECIFIED_FAILURE,
244 false, NULL);
245 cfg80211_sme_free(wdev);
246 }
247 wdev_unlock(wdev);
248 }
249
250 rtnl_unlock();
251}
252
253
254static struct cfg80211_bss *cfg80211_get_conn_bss(struct wireless_dev *wdev)
255{
256 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
257 struct cfg80211_bss *bss;
258 u16 capa = WLAN_CAPABILITY_ESS;
259
260 ASSERT_WDEV_LOCK(wdev);
261
262 if (wdev->conn->params.privacy)
263 capa |= WLAN_CAPABILITY_PRIVACY;
264
265 bss = cfg80211_get_bss(wdev->wiphy, wdev->conn->params.channel,
266 wdev->conn->params.bssid,
267 wdev->conn->params.ssid,
268 wdev->conn->params.ssid_len,
269 WLAN_CAPABILITY_ESS | WLAN_CAPABILITY_PRIVACY,
270 capa);
271 if (!bss)
272 return NULL;
273
274 memcpy(wdev->conn->bssid, bss->bssid, ETH_ALEN);
275 wdev->conn->params.bssid = wdev->conn->bssid;
276 wdev->conn->params.channel = bss->channel;
277 wdev->conn->state = CFG80211_CONN_AUTHENTICATE_NEXT;
278 schedule_work(&rdev->conn_work);
279
280 return bss;
281}
282
283static void __cfg80211_sme_scan_done(struct net_device *dev)
284{
285 struct wireless_dev *wdev = dev->ieee80211_ptr;
286 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
287 struct cfg80211_bss *bss;
288
289 ASSERT_WDEV_LOCK(wdev);
290
291 if (!wdev->conn)
292 return;
293
294 if (wdev->conn->state != CFG80211_CONN_SCANNING &&
295 wdev->conn->state != CFG80211_CONN_SCAN_AGAIN)
296 return;
297
298 bss = cfg80211_get_conn_bss(wdev);
299 if (bss)
300 cfg80211_put_bss(&rdev->wiphy, bss);
301 else
302 schedule_work(&rdev->conn_work);
303}
304
305void cfg80211_sme_scan_done(struct net_device *dev)
306{
307 struct wireless_dev *wdev = dev->ieee80211_ptr;
308
309 wdev_lock(wdev);
310 __cfg80211_sme_scan_done(dev);
311 wdev_unlock(wdev);
312}
313
314void cfg80211_sme_rx_auth(struct wireless_dev *wdev, const u8 *buf, size_t len)
315{
316 struct wiphy *wiphy = wdev->wiphy;
317 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
318 struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)buf;
319 u16 status_code = le16_to_cpu(mgmt->u.auth.status_code);
320
321 ASSERT_WDEV_LOCK(wdev);
322
323 if (!wdev->conn || wdev->conn->state == CFG80211_CONN_CONNECTED)
324 return;
325
326 if (status_code == WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG &&
327 wdev->conn->auto_auth &&
328 wdev->conn->params.auth_type != NL80211_AUTHTYPE_NETWORK_EAP) {
329
330 switch (wdev->conn->params.auth_type) {
331 case NL80211_AUTHTYPE_OPEN_SYSTEM:
332 if (wdev->connect_keys)
333 wdev->conn->params.auth_type =
334 NL80211_AUTHTYPE_SHARED_KEY;
335 else
336 wdev->conn->params.auth_type =
337 NL80211_AUTHTYPE_NETWORK_EAP;
338 break;
339 case NL80211_AUTHTYPE_SHARED_KEY:
340 wdev->conn->params.auth_type =
341 NL80211_AUTHTYPE_NETWORK_EAP;
342 break;
343 default:
344
345 wdev->conn->params.auth_type =
346 NL80211_AUTHTYPE_OPEN_SYSTEM;
347 break;
348 }
349 wdev->conn->state = CFG80211_CONN_AUTHENTICATE_NEXT;
350 schedule_work(&rdev->conn_work);
351 } else if (status_code != WLAN_STATUS_SUCCESS) {
352 __cfg80211_connect_result(wdev->netdev, mgmt->bssid,
353 NULL, 0, NULL, 0,
354 status_code, false, NULL);
355 } else if (wdev->conn->state == CFG80211_CONN_AUTHENTICATING) {
356 wdev->conn->state = CFG80211_CONN_ASSOCIATE_NEXT;
357 schedule_work(&rdev->conn_work);
358 }
359}
360
361bool cfg80211_sme_rx_assoc_resp(struct wireless_dev *wdev, u16 status)
362{
363 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
364
365 if (!wdev->conn)
366 return false;
367
368 if (status == WLAN_STATUS_SUCCESS) {
369 wdev->conn->state = CFG80211_CONN_CONNECTED;
370 return false;
371 }
372
373 if (wdev->conn->prev_bssid_valid) {
374
375
376
377
378
379 wdev->conn->prev_bssid_valid = false;
380 wdev->conn->state = CFG80211_CONN_ASSOCIATE_NEXT;
381 schedule_work(&rdev->conn_work);
382 return true;
383 }
384
385 wdev->conn->state = CFG80211_CONN_ASSOC_FAILED;
386 schedule_work(&rdev->conn_work);
387 return false;
388}
389
390void cfg80211_sme_deauth(struct wireless_dev *wdev)
391{
392 cfg80211_sme_free(wdev);
393}
394
395void cfg80211_sme_auth_timeout(struct wireless_dev *wdev)
396{
397 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
398
399 if (!wdev->conn)
400 return;
401
402 wdev->conn->state = CFG80211_CONN_AUTH_FAILED;
403 schedule_work(&rdev->conn_work);
404}
405
406void cfg80211_sme_disassoc(struct wireless_dev *wdev)
407{
408 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
409
410 if (!wdev->conn)
411 return;
412
413 wdev->conn->state = CFG80211_CONN_DEAUTH;
414 schedule_work(&rdev->conn_work);
415}
416
417void cfg80211_sme_assoc_timeout(struct wireless_dev *wdev)
418{
419 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
420
421 if (!wdev->conn)
422 return;
423
424 wdev->conn->state = CFG80211_CONN_ASSOC_FAILED;
425 schedule_work(&rdev->conn_work);
426}
427
428static int cfg80211_sme_connect(struct wireless_dev *wdev,
429 struct cfg80211_connect_params *connect,
430 const u8 *prev_bssid)
431{
432 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
433 struct cfg80211_bss *bss;
434 int err;
435
436 if (!rdev->ops->auth || !rdev->ops->assoc)
437 return -EOPNOTSUPP;
438
439 if (wdev->current_bss)
440 return -EALREADY;
441
442 if (WARN_ON(wdev->conn))
443 return -EINPROGRESS;
444
445 wdev->conn = kzalloc(sizeof(*wdev->conn), GFP_KERNEL);
446 if (!wdev->conn)
447 return -ENOMEM;
448
449
450
451
452 memcpy(&wdev->conn->params, connect, sizeof(*connect));
453 if (connect->bssid) {
454 wdev->conn->params.bssid = wdev->conn->bssid;
455 memcpy(wdev->conn->bssid, connect->bssid, ETH_ALEN);
456 }
457
458 if (connect->ie) {
459 wdev->conn->ie = kmemdup(connect->ie, connect->ie_len,
460 GFP_KERNEL);
461 wdev->conn->params.ie = wdev->conn->ie;
462 if (!wdev->conn->ie) {
463 kfree(wdev->conn);
464 wdev->conn = NULL;
465 return -ENOMEM;
466 }
467 }
468
469 if (connect->auth_type == NL80211_AUTHTYPE_AUTOMATIC) {
470 wdev->conn->auto_auth = true;
471
472 wdev->conn->params.auth_type =
473 NL80211_AUTHTYPE_OPEN_SYSTEM;
474 } else {
475 wdev->conn->auto_auth = false;
476 }
477
478 wdev->conn->params.ssid = wdev->ssid;
479 wdev->conn->params.ssid_len = connect->ssid_len;
480
481
482 bss = cfg80211_get_conn_bss(wdev);
483
484 if (prev_bssid) {
485 memcpy(wdev->conn->prev_bssid, prev_bssid, ETH_ALEN);
486 wdev->conn->prev_bssid_valid = true;
487 }
488
489
490 if (bss) {
491 wdev->conn->state = CFG80211_CONN_AUTHENTICATE_NEXT;
492 err = cfg80211_conn_do_work(wdev);
493 cfg80211_put_bss(wdev->wiphy, bss);
494 } else {
495
496 err = cfg80211_conn_scan(wdev);
497
498
499
500
501
502
503 if (err == -EBUSY) {
504 err = 0;
505 wdev->conn->state = CFG80211_CONN_SCAN_AGAIN;
506 }
507 }
508
509 if (err)
510 cfg80211_sme_free(wdev);
511
512 return err;
513}
514
515static int cfg80211_sme_disconnect(struct wireless_dev *wdev, u16 reason)
516{
517 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
518 int err;
519
520 if (!wdev->conn)
521 return 0;
522
523 if (!rdev->ops->deauth)
524 return -EOPNOTSUPP;
525
526 if (wdev->conn->state == CFG80211_CONN_SCANNING ||
527 wdev->conn->state == CFG80211_CONN_SCAN_AGAIN) {
528 err = 0;
529 goto out;
530 }
531
532
533 err = cfg80211_mlme_deauth(rdev, wdev->netdev,
534 wdev->conn->params.bssid,
535 NULL, 0, reason, false);
536 out:
537 cfg80211_sme_free(wdev);
538 return err;
539}
540
541
542
543
544
545static bool cfg80211_is_all_idle(void)
546{
547 struct cfg80211_registered_device *rdev;
548 struct wireless_dev *wdev;
549 bool is_all_idle = true;
550
551
552
553
554
555
556 list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
557 list_for_each_entry(wdev, &rdev->wdev_list, list) {
558 wdev_lock(wdev);
559 if (wdev->conn || wdev->current_bss)
560 is_all_idle = false;
561 wdev_unlock(wdev);
562 }
563 }
564
565 return is_all_idle;
566}
567
568static void disconnect_work(struct work_struct *work)
569{
570 rtnl_lock();
571 if (cfg80211_is_all_idle())
572 regulatory_hint_disconnect();
573 rtnl_unlock();
574}
575
576static DECLARE_WORK(cfg80211_disconnect_work, disconnect_work);
577
578
579
580
581
582
583
584
585void __cfg80211_connect_result(struct net_device *dev, const u8 *bssid,
586 const u8 *req_ie, size_t req_ie_len,
587 const u8 *resp_ie, size_t resp_ie_len,
588 u16 status, bool wextev,
589 struct cfg80211_bss *bss)
590{
591 struct wireless_dev *wdev = dev->ieee80211_ptr;
592 const u8 *country_ie;
593#ifdef CONFIG_CFG80211_WEXT
594 union iwreq_data wrqu;
595#endif
596
597 ASSERT_WDEV_LOCK(wdev);
598
599 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION &&
600 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)) {
601 cfg80211_put_bss(wdev->wiphy, bss);
602 return;
603 }
604
605 nl80211_send_connect_result(wiphy_to_dev(wdev->wiphy), dev,
606 bssid, req_ie, req_ie_len,
607 resp_ie, resp_ie_len,
608 status, GFP_KERNEL);
609
610#ifdef CONFIG_CFG80211_WEXT
611 if (wextev) {
612 if (req_ie && status == WLAN_STATUS_SUCCESS) {
613 memset(&wrqu, 0, sizeof(wrqu));
614 wrqu.data.length = req_ie_len;
615 wireless_send_event(dev, IWEVASSOCREQIE, &wrqu, req_ie);
616 }
617
618 if (resp_ie && status == WLAN_STATUS_SUCCESS) {
619 memset(&wrqu, 0, sizeof(wrqu));
620 wrqu.data.length = resp_ie_len;
621 wireless_send_event(dev, IWEVASSOCRESPIE, &wrqu, resp_ie);
622 }
623
624 memset(&wrqu, 0, sizeof(wrqu));
625 wrqu.ap_addr.sa_family = ARPHRD_ETHER;
626 if (bssid && status == WLAN_STATUS_SUCCESS) {
627 memcpy(wrqu.ap_addr.sa_data, bssid, ETH_ALEN);
628 memcpy(wdev->wext.prev_bssid, bssid, ETH_ALEN);
629 wdev->wext.prev_bssid_valid = true;
630 }
631 wireless_send_event(dev, SIOCGIWAP, &wrqu, NULL);
632 }
633#endif
634
635 if (!bss && (status == WLAN_STATUS_SUCCESS)) {
636 WARN_ON_ONCE(!wiphy_to_dev(wdev->wiphy)->ops->connect);
637 bss = cfg80211_get_bss(wdev->wiphy, NULL, bssid,
638 wdev->ssid, wdev->ssid_len,
639 WLAN_CAPABILITY_ESS,
640 WLAN_CAPABILITY_ESS);
641 if (bss)
642 cfg80211_hold_bss(bss_from_pub(bss));
643 }
644
645 if (wdev->current_bss) {
646 cfg80211_unhold_bss(wdev->current_bss);
647 cfg80211_put_bss(wdev->wiphy, &wdev->current_bss->pub);
648 wdev->current_bss = NULL;
649 }
650
651 if (status != WLAN_STATUS_SUCCESS) {
652 kfree(wdev->connect_keys);
653 wdev->connect_keys = NULL;
654 wdev->ssid_len = 0;
655 if (bss) {
656 cfg80211_unhold_bss(bss_from_pub(bss));
657 cfg80211_put_bss(wdev->wiphy, bss);
658 }
659 return;
660 }
661
662 if (WARN_ON(!bss))
663 return;
664
665 wdev->current_bss = bss_from_pub(bss);
666
667 cfg80211_upload_connect_keys(wdev);
668
669 rcu_read_lock();
670 country_ie = ieee80211_bss_get_ie(bss, WLAN_EID_COUNTRY);
671 if (!country_ie) {
672 rcu_read_unlock();
673 return;
674 }
675
676 country_ie = kmemdup(country_ie, 2 + country_ie[1], GFP_ATOMIC);
677 rcu_read_unlock();
678
679 if (!country_ie)
680 return;
681
682
683
684
685
686
687 regulatory_hint_country_ie(wdev->wiphy, bss->channel->band,
688 country_ie + 2, country_ie[1]);
689 kfree(country_ie);
690}
691
692void cfg80211_connect_result(struct net_device *dev, const u8 *bssid,
693 const u8 *req_ie, size_t req_ie_len,
694 const u8 *resp_ie, size_t resp_ie_len,
695 u16 status, gfp_t gfp)
696{
697 struct wireless_dev *wdev = dev->ieee80211_ptr;
698 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
699 struct cfg80211_event *ev;
700 unsigned long flags;
701
702 ev = kzalloc(sizeof(*ev) + req_ie_len + resp_ie_len, gfp);
703 if (!ev)
704 return;
705
706 ev->type = EVENT_CONNECT_RESULT;
707 if (bssid)
708 memcpy(ev->cr.bssid, bssid, ETH_ALEN);
709 if (req_ie_len) {
710 ev->cr.req_ie = ((u8 *)ev) + sizeof(*ev);
711 ev->cr.req_ie_len = req_ie_len;
712 memcpy((void *)ev->cr.req_ie, req_ie, req_ie_len);
713 }
714 if (resp_ie_len) {
715 ev->cr.resp_ie = ((u8 *)ev) + sizeof(*ev) + req_ie_len;
716 ev->cr.resp_ie_len = resp_ie_len;
717 memcpy((void *)ev->cr.resp_ie, resp_ie, resp_ie_len);
718 }
719 ev->cr.status = status;
720
721 spin_lock_irqsave(&wdev->event_lock, flags);
722 list_add_tail(&ev->list, &wdev->event_list);
723 spin_unlock_irqrestore(&wdev->event_lock, flags);
724 queue_work(cfg80211_wq, &rdev->event_work);
725}
726EXPORT_SYMBOL(cfg80211_connect_result);
727
728
729void __cfg80211_roamed(struct wireless_dev *wdev,
730 struct cfg80211_bss *bss,
731 const u8 *req_ie, size_t req_ie_len,
732 const u8 *resp_ie, size_t resp_ie_len)
733{
734#ifdef CONFIG_CFG80211_WEXT
735 union iwreq_data wrqu;
736#endif
737 ASSERT_WDEV_LOCK(wdev);
738
739 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION &&
740 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT))
741 goto out;
742
743 if (WARN_ON(!wdev->current_bss))
744 goto out;
745
746 cfg80211_unhold_bss(wdev->current_bss);
747 cfg80211_put_bss(wdev->wiphy, &wdev->current_bss->pub);
748 wdev->current_bss = NULL;
749
750 cfg80211_hold_bss(bss_from_pub(bss));
751 wdev->current_bss = bss_from_pub(bss);
752
753 nl80211_send_roamed(wiphy_to_dev(wdev->wiphy), wdev->netdev, bss->bssid,
754 req_ie, req_ie_len, resp_ie, resp_ie_len,
755 GFP_KERNEL);
756
757#ifdef CONFIG_CFG80211_WEXT
758 if (req_ie) {
759 memset(&wrqu, 0, sizeof(wrqu));
760 wrqu.data.length = req_ie_len;
761 wireless_send_event(wdev->netdev, IWEVASSOCREQIE,
762 &wrqu, req_ie);
763 }
764
765 if (resp_ie) {
766 memset(&wrqu, 0, sizeof(wrqu));
767 wrqu.data.length = resp_ie_len;
768 wireless_send_event(wdev->netdev, IWEVASSOCRESPIE,
769 &wrqu, resp_ie);
770 }
771
772 memset(&wrqu, 0, sizeof(wrqu));
773 wrqu.ap_addr.sa_family = ARPHRD_ETHER;
774 memcpy(wrqu.ap_addr.sa_data, bss->bssid, ETH_ALEN);
775 memcpy(wdev->wext.prev_bssid, bss->bssid, ETH_ALEN);
776 wdev->wext.prev_bssid_valid = true;
777 wireless_send_event(wdev->netdev, SIOCGIWAP, &wrqu, NULL);
778#endif
779
780 return;
781out:
782 cfg80211_put_bss(wdev->wiphy, bss);
783}
784
785void cfg80211_roamed(struct net_device *dev,
786 struct ieee80211_channel *channel,
787 const u8 *bssid,
788 const u8 *req_ie, size_t req_ie_len,
789 const u8 *resp_ie, size_t resp_ie_len, gfp_t gfp)
790{
791 struct wireless_dev *wdev = dev->ieee80211_ptr;
792 struct cfg80211_bss *bss;
793
794 bss = cfg80211_get_bss(wdev->wiphy, channel, bssid, wdev->ssid,
795 wdev->ssid_len, WLAN_CAPABILITY_ESS,
796 WLAN_CAPABILITY_ESS);
797 if (WARN_ON(!bss))
798 return;
799
800 cfg80211_roamed_bss(dev, bss, req_ie, req_ie_len, resp_ie,
801 resp_ie_len, gfp);
802}
803EXPORT_SYMBOL(cfg80211_roamed);
804
805
806void cfg80211_roamed_bss(struct net_device *dev,
807 struct cfg80211_bss *bss, const u8 *req_ie,
808 size_t req_ie_len, const u8 *resp_ie,
809 size_t resp_ie_len, gfp_t gfp)
810{
811 struct wireless_dev *wdev = dev->ieee80211_ptr;
812 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
813 struct cfg80211_event *ev;
814 unsigned long flags;
815
816 if (WARN_ON(!bss))
817 return;
818
819 ev = kzalloc(sizeof(*ev) + req_ie_len + resp_ie_len, gfp);
820 if (!ev) {
821 cfg80211_put_bss(wdev->wiphy, bss);
822 return;
823 }
824
825 ev->type = EVENT_ROAMED;
826 ev->rm.req_ie = ((u8 *)ev) + sizeof(*ev);
827 ev->rm.req_ie_len = req_ie_len;
828 memcpy((void *)ev->rm.req_ie, req_ie, req_ie_len);
829 ev->rm.resp_ie = ((u8 *)ev) + sizeof(*ev) + req_ie_len;
830 ev->rm.resp_ie_len = resp_ie_len;
831 memcpy((void *)ev->rm.resp_ie, resp_ie, resp_ie_len);
832 ev->rm.bss = bss;
833
834 spin_lock_irqsave(&wdev->event_lock, flags);
835 list_add_tail(&ev->list, &wdev->event_list);
836 spin_unlock_irqrestore(&wdev->event_lock, flags);
837 queue_work(cfg80211_wq, &rdev->event_work);
838}
839EXPORT_SYMBOL(cfg80211_roamed_bss);
840
841void __cfg80211_disconnected(struct net_device *dev, const u8 *ie,
842 size_t ie_len, u16 reason, bool from_ap)
843{
844 struct wireless_dev *wdev = dev->ieee80211_ptr;
845 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
846 int i;
847#ifdef CONFIG_CFG80211_WEXT
848 union iwreq_data wrqu;
849#endif
850
851 ASSERT_WDEV_LOCK(wdev);
852
853 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION &&
854 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT))
855 return;
856
857 if (wdev->current_bss) {
858 cfg80211_unhold_bss(wdev->current_bss);
859 cfg80211_put_bss(wdev->wiphy, &wdev->current_bss->pub);
860 }
861
862 wdev->current_bss = NULL;
863 wdev->ssid_len = 0;
864
865 nl80211_send_disconnected(rdev, dev, reason, ie, ie_len, from_ap);
866
867
868
869
870
871 if (rdev->ops->del_key)
872 for (i = 0; i < 6; i++)
873 rdev_del_key(rdev, dev, i, false, NULL);
874
875#ifdef CONFIG_CFG80211_WEXT
876 memset(&wrqu, 0, sizeof(wrqu));
877 wrqu.ap_addr.sa_family = ARPHRD_ETHER;
878 wireless_send_event(dev, SIOCGIWAP, &wrqu, NULL);
879 wdev->wext.connect.ssid_len = 0;
880#endif
881
882 schedule_work(&cfg80211_disconnect_work);
883}
884
885void cfg80211_disconnected(struct net_device *dev, u16 reason,
886 u8 *ie, size_t ie_len, gfp_t gfp)
887{
888 struct wireless_dev *wdev = dev->ieee80211_ptr;
889 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
890 struct cfg80211_event *ev;
891 unsigned long flags;
892
893 ev = kzalloc(sizeof(*ev) + ie_len, gfp);
894 if (!ev)
895 return;
896
897 ev->type = EVENT_DISCONNECTED;
898 ev->dc.ie = ((u8 *)ev) + sizeof(*ev);
899 ev->dc.ie_len = ie_len;
900 memcpy((void *)ev->dc.ie, ie, ie_len);
901 ev->dc.reason = reason;
902
903 spin_lock_irqsave(&wdev->event_lock, flags);
904 list_add_tail(&ev->list, &wdev->event_list);
905 spin_unlock_irqrestore(&wdev->event_lock, flags);
906 queue_work(cfg80211_wq, &rdev->event_work);
907}
908EXPORT_SYMBOL(cfg80211_disconnected);
909
910
911
912
913int cfg80211_connect(struct cfg80211_registered_device *rdev,
914 struct net_device *dev,
915 struct cfg80211_connect_params *connect,
916 struct cfg80211_cached_keys *connkeys,
917 const u8 *prev_bssid)
918{
919 struct wireless_dev *wdev = dev->ieee80211_ptr;
920 int err;
921
922 ASSERT_WDEV_LOCK(wdev);
923
924 if (WARN_ON(wdev->connect_keys)) {
925 kfree(wdev->connect_keys);
926 wdev->connect_keys = NULL;
927 }
928
929 cfg80211_oper_and_ht_capa(&connect->ht_capa_mask,
930 rdev->wiphy.ht_capa_mod_mask);
931
932 if (connkeys && connkeys->def >= 0) {
933 int idx;
934 u32 cipher;
935
936 idx = connkeys->def;
937 cipher = connkeys->params[idx].cipher;
938
939 if (cipher == WLAN_CIPHER_SUITE_WEP40 ||
940 cipher == WLAN_CIPHER_SUITE_WEP104) {
941 connect->key_idx = idx;
942 connect->key = connkeys->params[idx].key;
943 connect->key_len = connkeys->params[idx].key_len;
944
945
946
947
948
949 if (connect->crypto.cipher_group == 0)
950 connect->crypto.cipher_group = cipher;
951
952 if (connect->crypto.n_ciphers_pairwise == 0) {
953 connect->crypto.n_ciphers_pairwise = 1;
954 connect->crypto.ciphers_pairwise[0] = cipher;
955 }
956 }
957 }
958
959 wdev->connect_keys = connkeys;
960 memcpy(wdev->ssid, connect->ssid, connect->ssid_len);
961 wdev->ssid_len = connect->ssid_len;
962
963 if (!rdev->ops->connect)
964 err = cfg80211_sme_connect(wdev, connect, prev_bssid);
965 else
966 err = rdev_connect(rdev, dev, connect);
967
968 if (err) {
969 wdev->connect_keys = NULL;
970 wdev->ssid_len = 0;
971 return err;
972 }
973
974 return 0;
975}
976
977int cfg80211_disconnect(struct cfg80211_registered_device *rdev,
978 struct net_device *dev, u16 reason, bool wextev)
979{
980 struct wireless_dev *wdev = dev->ieee80211_ptr;
981 int err = 0;
982
983 ASSERT_WDEV_LOCK(wdev);
984
985 kfree(wdev->connect_keys);
986 wdev->connect_keys = NULL;
987
988 if (wdev->conn)
989 err = cfg80211_sme_disconnect(wdev, reason);
990 else if (!rdev->ops->disconnect)
991 cfg80211_mlme_down(rdev, dev);
992 else if (wdev->current_bss)
993 err = rdev_disconnect(rdev, dev, reason);
994
995 return err;
996}
997
