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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 const 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_rdev(wdev->wiphy);
63 struct cfg80211_scan_request *request;
64 int n_channels, err;
65
66 ASSERT_RTNL();
67 ASSERT_WDEV_LOCK(wdev);
68
69 if (rdev->scan_req || rdev->scan_msg)
70 return -EBUSY;
71
72 if (wdev->conn->params.channel)
73 n_channels = 1;
74 else
75 n_channels = ieee80211_get_num_supported_channels(wdev->wiphy);
76
77 request = kzalloc(sizeof(*request) + sizeof(request->ssids[0]) +
78 sizeof(request->channels[0]) * n_channels,
79 GFP_KERNEL);
80 if (!request)
81 return -ENOMEM;
82
83 if (wdev->conn->params.channel) {
84 enum ieee80211_band band = wdev->conn->params.channel->band;
85 struct ieee80211_supported_band *sband =
86 wdev->wiphy->bands[band];
87
88 if (!sband) {
89 kfree(request);
90 return -EINVAL;
91 }
92 request->channels[0] = wdev->conn->params.channel;
93 request->rates[band] = (1 << sband->n_bitrates) - 1;
94 } else {
95 int i = 0, j;
96 enum ieee80211_band band;
97 struct ieee80211_supported_band *bands;
98 struct ieee80211_channel *channel;
99
100 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
101 bands = wdev->wiphy->bands[band];
102 if (!bands)
103 continue;
104 for (j = 0; j < bands->n_channels; j++) {
105 channel = &bands->channels[j];
106 if (channel->flags & IEEE80211_CHAN_DISABLED)
107 continue;
108 request->channels[i++] = channel;
109 }
110 request->rates[band] = (1 << bands->n_bitrates) - 1;
111 }
112 n_channels = i;
113 }
114 request->n_channels = n_channels;
115 request->ssids = (void *)&request->channels[n_channels];
116 request->n_ssids = 1;
117
118 memcpy(request->ssids[0].ssid, wdev->conn->params.ssid,
119 wdev->conn->params.ssid_len);
120 request->ssids[0].ssid_len = wdev->conn->params.ssid_len;
121
122 request->wdev = wdev;
123 request->wiphy = &rdev->wiphy;
124 request->scan_start = jiffies;
125
126 rdev->scan_req = request;
127
128 err = rdev_scan(rdev, request);
129 if (!err) {
130 wdev->conn->state = CFG80211_CONN_SCANNING;
131 nl80211_send_scan_start(rdev, wdev);
132 dev_hold(wdev->netdev);
133 } else {
134 rdev->scan_req = NULL;
135 kfree(request);
136 }
137 return err;
138}
139
140static int cfg80211_conn_do_work(struct wireless_dev *wdev)
141{
142 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
143 struct cfg80211_connect_params *params;
144 struct cfg80211_assoc_request req = {};
145 int err;
146
147 ASSERT_WDEV_LOCK(wdev);
148
149 if (!wdev->conn)
150 return 0;
151
152 params = &wdev->conn->params;
153
154 switch (wdev->conn->state) {
155 case CFG80211_CONN_SCANNING:
156
157 return -ENOENT;
158 case CFG80211_CONN_SCAN_AGAIN:
159 return cfg80211_conn_scan(wdev);
160 case CFG80211_CONN_AUTHENTICATE_NEXT:
161 if (WARN_ON(!rdev->ops->auth))
162 return -EOPNOTSUPP;
163 wdev->conn->state = CFG80211_CONN_AUTHENTICATING;
164 return cfg80211_mlme_auth(rdev, wdev->netdev,
165 params->channel, params->auth_type,
166 params->bssid,
167 params->ssid, params->ssid_len,
168 NULL, 0,
169 params->key, params->key_len,
170 params->key_idx, NULL, 0);
171 case CFG80211_CONN_AUTH_FAILED:
172 return -ENOTCONN;
173 case CFG80211_CONN_ASSOCIATE_NEXT:
174 if (WARN_ON(!rdev->ops->assoc))
175 return -EOPNOTSUPP;
176 wdev->conn->state = CFG80211_CONN_ASSOCIATING;
177 if (wdev->conn->prev_bssid_valid)
178 req.prev_bssid = wdev->conn->prev_bssid;
179 req.ie = params->ie;
180 req.ie_len = params->ie_len;
181 req.use_mfp = params->mfp != NL80211_MFP_NO;
182 req.crypto = params->crypto;
183 req.flags = params->flags;
184 req.ht_capa = params->ht_capa;
185 req.ht_capa_mask = params->ht_capa_mask;
186 req.vht_capa = params->vht_capa;
187 req.vht_capa_mask = params->vht_capa_mask;
188
189 err = cfg80211_mlme_assoc(rdev, wdev->netdev, params->channel,
190 params->bssid, params->ssid,
191 params->ssid_len, &req);
192 if (err)
193 cfg80211_mlme_deauth(rdev, wdev->netdev, params->bssid,
194 NULL, 0,
195 WLAN_REASON_DEAUTH_LEAVING,
196 false);
197 return err;
198 case CFG80211_CONN_ASSOC_FAILED:
199 cfg80211_mlme_deauth(rdev, wdev->netdev, params->bssid,
200 NULL, 0,
201 WLAN_REASON_DEAUTH_LEAVING, false);
202 return -ENOTCONN;
203 case CFG80211_CONN_DEAUTH:
204 cfg80211_mlme_deauth(rdev, wdev->netdev, params->bssid,
205 NULL, 0,
206 WLAN_REASON_DEAUTH_LEAVING, false);
207
208 cfg80211_sme_free(wdev);
209 return 0;
210 default:
211 return 0;
212 }
213}
214
215void cfg80211_conn_work(struct work_struct *work)
216{
217 struct cfg80211_registered_device *rdev =
218 container_of(work, struct cfg80211_registered_device, conn_work);
219 struct wireless_dev *wdev;
220 u8 bssid_buf[ETH_ALEN], *bssid = NULL;
221
222 rtnl_lock();
223
224 list_for_each_entry(wdev, &rdev->wdev_list, list) {
225 if (!wdev->netdev)
226 continue;
227
228 wdev_lock(wdev);
229 if (!netif_running(wdev->netdev)) {
230 wdev_unlock(wdev);
231 continue;
232 }
233 if (!wdev->conn ||
234 wdev->conn->state == CFG80211_CONN_CONNECTED) {
235 wdev_unlock(wdev);
236 continue;
237 }
238 if (wdev->conn->params.bssid) {
239 memcpy(bssid_buf, wdev->conn->params.bssid, ETH_ALEN);
240 bssid = bssid_buf;
241 }
242 if (cfg80211_conn_do_work(wdev)) {
243 __cfg80211_connect_result(
244 wdev->netdev, bssid,
245 NULL, 0, NULL, 0,
246 WLAN_STATUS_UNSPECIFIED_FAILURE,
247 false, NULL);
248 }
249 wdev_unlock(wdev);
250 }
251
252 rtnl_unlock();
253}
254
255
256static struct cfg80211_bss *cfg80211_get_conn_bss(struct wireless_dev *wdev)
257{
258 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
259 struct cfg80211_bss *bss;
260
261 ASSERT_WDEV_LOCK(wdev);
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 IEEE80211_BSS_TYPE_ESS,
268 IEEE80211_PRIVACY(wdev->conn->params.privacy));
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_rdev(wdev->wiphy);
285 struct cfg80211_bss *bss;
286
287 ASSERT_WDEV_LOCK(wdev);
288
289 if (!wdev->conn)
290 return;
291
292 if (wdev->conn->state != CFG80211_CONN_SCANNING &&
293 wdev->conn->state != CFG80211_CONN_SCAN_AGAIN)
294 return;
295
296 bss = cfg80211_get_conn_bss(wdev);
297 if (bss)
298 cfg80211_put_bss(&rdev->wiphy, bss);
299 else
300 schedule_work(&rdev->conn_work);
301}
302
303void cfg80211_sme_scan_done(struct net_device *dev)
304{
305 struct wireless_dev *wdev = dev->ieee80211_ptr;
306
307 wdev_lock(wdev);
308 __cfg80211_sme_scan_done(dev);
309 wdev_unlock(wdev);
310}
311
312void cfg80211_sme_rx_auth(struct wireless_dev *wdev, const u8 *buf, size_t len)
313{
314 struct wiphy *wiphy = wdev->wiphy;
315 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
316 struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)buf;
317 u16 status_code = le16_to_cpu(mgmt->u.auth.status_code);
318
319 ASSERT_WDEV_LOCK(wdev);
320
321 if (!wdev->conn || wdev->conn->state == CFG80211_CONN_CONNECTED)
322 return;
323
324 if (status_code == WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG &&
325 wdev->conn->auto_auth &&
326 wdev->conn->params.auth_type != NL80211_AUTHTYPE_NETWORK_EAP) {
327
328 switch (wdev->conn->params.auth_type) {
329 case NL80211_AUTHTYPE_OPEN_SYSTEM:
330 if (wdev->connect_keys)
331 wdev->conn->params.auth_type =
332 NL80211_AUTHTYPE_SHARED_KEY;
333 else
334 wdev->conn->params.auth_type =
335 NL80211_AUTHTYPE_NETWORK_EAP;
336 break;
337 case NL80211_AUTHTYPE_SHARED_KEY:
338 wdev->conn->params.auth_type =
339 NL80211_AUTHTYPE_NETWORK_EAP;
340 break;
341 default:
342
343 wdev->conn->params.auth_type =
344 NL80211_AUTHTYPE_OPEN_SYSTEM;
345 break;
346 }
347 wdev->conn->state = CFG80211_CONN_AUTHENTICATE_NEXT;
348 schedule_work(&rdev->conn_work);
349 } else if (status_code != WLAN_STATUS_SUCCESS) {
350 __cfg80211_connect_result(wdev->netdev, mgmt->bssid,
351 NULL, 0, NULL, 0,
352 status_code, false, NULL);
353 } else if (wdev->conn->state == CFG80211_CONN_AUTHENTICATING) {
354 wdev->conn->state = CFG80211_CONN_ASSOCIATE_NEXT;
355 schedule_work(&rdev->conn_work);
356 }
357}
358
359bool cfg80211_sme_rx_assoc_resp(struct wireless_dev *wdev, u16 status)
360{
361 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
362
363 if (!wdev->conn)
364 return false;
365
366 if (status == WLAN_STATUS_SUCCESS) {
367 wdev->conn->state = CFG80211_CONN_CONNECTED;
368 return false;
369 }
370
371 if (wdev->conn->prev_bssid_valid) {
372
373
374
375
376
377 wdev->conn->prev_bssid_valid = false;
378 wdev->conn->state = CFG80211_CONN_ASSOCIATE_NEXT;
379 schedule_work(&rdev->conn_work);
380 return true;
381 }
382
383 wdev->conn->state = CFG80211_CONN_ASSOC_FAILED;
384 schedule_work(&rdev->conn_work);
385 return false;
386}
387
388void cfg80211_sme_deauth(struct wireless_dev *wdev)
389{
390 cfg80211_sme_free(wdev);
391}
392
393void cfg80211_sme_auth_timeout(struct wireless_dev *wdev)
394{
395 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
396
397 if (!wdev->conn)
398 return;
399
400 wdev->conn->state = CFG80211_CONN_AUTH_FAILED;
401 schedule_work(&rdev->conn_work);
402}
403
404void cfg80211_sme_disassoc(struct wireless_dev *wdev)
405{
406 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
407
408 if (!wdev->conn)
409 return;
410
411 wdev->conn->state = CFG80211_CONN_DEAUTH;
412 schedule_work(&rdev->conn_work);
413}
414
415void cfg80211_sme_assoc_timeout(struct wireless_dev *wdev)
416{
417 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
418
419 if (!wdev->conn)
420 return;
421
422 wdev->conn->state = CFG80211_CONN_ASSOC_FAILED;
423 schedule_work(&rdev->conn_work);
424}
425
426static int cfg80211_sme_get_conn_ies(struct wireless_dev *wdev,
427 const u8 *ies, size_t ies_len,
428 const u8 **out_ies, size_t *out_ies_len)
429{
430 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
431 u8 *buf;
432 size_t offs;
433
434 if (!rdev->wiphy.extended_capabilities_len ||
435 (ies && cfg80211_find_ie(WLAN_EID_EXT_CAPABILITY, ies, ies_len))) {
436 *out_ies = kmemdup(ies, ies_len, GFP_KERNEL);
437 if (!*out_ies)
438 return -ENOMEM;
439 *out_ies_len = ies_len;
440 return 0;
441 }
442
443 buf = kmalloc(ies_len + rdev->wiphy.extended_capabilities_len + 2,
444 GFP_KERNEL);
445 if (!buf)
446 return -ENOMEM;
447
448 if (ies_len) {
449 static const u8 before_extcapa[] = {
450
451 WLAN_EID_RSN,
452 WLAN_EID_QOS_CAPA,
453 WLAN_EID_RRM_ENABLED_CAPABILITIES,
454 WLAN_EID_MOBILITY_DOMAIN,
455 WLAN_EID_SUPPORTED_REGULATORY_CLASSES,
456 WLAN_EID_BSS_COEX_2040,
457 };
458
459 offs = ieee80211_ie_split(ies, ies_len, before_extcapa,
460 ARRAY_SIZE(before_extcapa), 0);
461 memcpy(buf, ies, offs);
462
463 memcpy(buf + offs + rdev->wiphy.extended_capabilities_len + 2,
464 ies + offs, ies_len - offs);
465 } else {
466 offs = 0;
467 }
468
469
470 buf[offs] = WLAN_EID_EXT_CAPABILITY;
471 buf[offs + 1] = rdev->wiphy.extended_capabilities_len;
472 memcpy(buf + offs + 2,
473 rdev->wiphy.extended_capabilities,
474 rdev->wiphy.extended_capabilities_len);
475
476 *out_ies = buf;
477 *out_ies_len = ies_len + rdev->wiphy.extended_capabilities_len + 2;
478
479 return 0;
480}
481
482static int cfg80211_sme_connect(struct wireless_dev *wdev,
483 struct cfg80211_connect_params *connect,
484 const u8 *prev_bssid)
485{
486 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
487 struct cfg80211_bss *bss;
488 int err;
489
490 if (!rdev->ops->auth || !rdev->ops->assoc)
491 return -EOPNOTSUPP;
492
493 if (wdev->current_bss)
494 return -EALREADY;
495
496 if (WARN_ON(wdev->conn))
497 return -EINPROGRESS;
498
499 wdev->conn = kzalloc(sizeof(*wdev->conn), GFP_KERNEL);
500 if (!wdev->conn)
501 return -ENOMEM;
502
503
504
505
506 memcpy(&wdev->conn->params, connect, sizeof(*connect));
507 if (connect->bssid) {
508 wdev->conn->params.bssid = wdev->conn->bssid;
509 memcpy(wdev->conn->bssid, connect->bssid, ETH_ALEN);
510 }
511
512 if (cfg80211_sme_get_conn_ies(wdev, connect->ie, connect->ie_len,
513 &wdev->conn->ie,
514 &wdev->conn->params.ie_len)) {
515 kfree(wdev->conn);
516 wdev->conn = NULL;
517 return -ENOMEM;
518 }
519 wdev->conn->params.ie = wdev->conn->ie;
520
521 if (connect->auth_type == NL80211_AUTHTYPE_AUTOMATIC) {
522 wdev->conn->auto_auth = true;
523
524 wdev->conn->params.auth_type =
525 NL80211_AUTHTYPE_OPEN_SYSTEM;
526 } else {
527 wdev->conn->auto_auth = false;
528 }
529
530 wdev->conn->params.ssid = wdev->ssid;
531 wdev->conn->params.ssid_len = wdev->ssid_len;
532
533
534 bss = cfg80211_get_conn_bss(wdev);
535
536 if (prev_bssid) {
537 memcpy(wdev->conn->prev_bssid, prev_bssid, ETH_ALEN);
538 wdev->conn->prev_bssid_valid = true;
539 }
540
541
542 if (bss) {
543 err = cfg80211_conn_do_work(wdev);
544 cfg80211_put_bss(wdev->wiphy, bss);
545 } else {
546
547 err = cfg80211_conn_scan(wdev);
548
549
550
551
552
553
554 if (err == -EBUSY) {
555 err = 0;
556 wdev->conn->state = CFG80211_CONN_SCAN_AGAIN;
557 }
558 }
559
560 if (err)
561 cfg80211_sme_free(wdev);
562
563 return err;
564}
565
566static int cfg80211_sme_disconnect(struct wireless_dev *wdev, u16 reason)
567{
568 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
569 int err;
570
571 if (!wdev->conn)
572 return 0;
573
574 if (!rdev->ops->deauth)
575 return -EOPNOTSUPP;
576
577 if (wdev->conn->state == CFG80211_CONN_SCANNING ||
578 wdev->conn->state == CFG80211_CONN_SCAN_AGAIN) {
579 err = 0;
580 goto out;
581 }
582
583
584 err = cfg80211_mlme_deauth(rdev, wdev->netdev,
585 wdev->conn->params.bssid,
586 NULL, 0, reason, false);
587 out:
588 cfg80211_sme_free(wdev);
589 return err;
590}
591
592
593
594
595
596static bool cfg80211_is_all_idle(void)
597{
598 struct cfg80211_registered_device *rdev;
599 struct wireless_dev *wdev;
600 bool is_all_idle = true;
601
602
603
604
605
606
607 list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
608 list_for_each_entry(wdev, &rdev->wdev_list, list) {
609 wdev_lock(wdev);
610 if (wdev->conn || wdev->current_bss)
611 is_all_idle = false;
612 wdev_unlock(wdev);
613 }
614 }
615
616 return is_all_idle;
617}
618
619static void disconnect_work(struct work_struct *work)
620{
621 rtnl_lock();
622 if (cfg80211_is_all_idle())
623 regulatory_hint_disconnect();
624 rtnl_unlock();
625}
626
627static DECLARE_WORK(cfg80211_disconnect_work, disconnect_work);
628
629
630
631
632
633
634
635
636void __cfg80211_connect_result(struct net_device *dev, const u8 *bssid,
637 const u8 *req_ie, size_t req_ie_len,
638 const u8 *resp_ie, size_t resp_ie_len,
639 u16 status, bool wextev,
640 struct cfg80211_bss *bss)
641{
642 struct wireless_dev *wdev = dev->ieee80211_ptr;
643 const u8 *country_ie;
644#ifdef CONFIG_CFG80211_WEXT
645 union iwreq_data wrqu;
646#endif
647
648 ASSERT_WDEV_LOCK(wdev);
649
650 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION &&
651 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)) {
652 cfg80211_put_bss(wdev->wiphy, bss);
653 return;
654 }
655
656 nl80211_send_connect_result(wiphy_to_rdev(wdev->wiphy), dev,
657 bssid, req_ie, req_ie_len,
658 resp_ie, resp_ie_len,
659 status, GFP_KERNEL);
660
661#ifdef CONFIG_CFG80211_WEXT
662 if (wextev) {
663 if (req_ie && status == WLAN_STATUS_SUCCESS) {
664 memset(&wrqu, 0, sizeof(wrqu));
665 wrqu.data.length = req_ie_len;
666 wireless_send_event(dev, IWEVASSOCREQIE, &wrqu, req_ie);
667 }
668
669 if (resp_ie && status == WLAN_STATUS_SUCCESS) {
670 memset(&wrqu, 0, sizeof(wrqu));
671 wrqu.data.length = resp_ie_len;
672 wireless_send_event(dev, IWEVASSOCRESPIE, &wrqu, resp_ie);
673 }
674
675 memset(&wrqu, 0, sizeof(wrqu));
676 wrqu.ap_addr.sa_family = ARPHRD_ETHER;
677 if (bssid && status == WLAN_STATUS_SUCCESS) {
678 memcpy(wrqu.ap_addr.sa_data, bssid, ETH_ALEN);
679 memcpy(wdev->wext.prev_bssid, bssid, ETH_ALEN);
680 wdev->wext.prev_bssid_valid = true;
681 }
682 wireless_send_event(dev, SIOCGIWAP, &wrqu, NULL);
683 }
684#endif
685
686 if (!bss && (status == WLAN_STATUS_SUCCESS)) {
687 WARN_ON_ONCE(!wiphy_to_rdev(wdev->wiphy)->ops->connect);
688 bss = cfg80211_get_bss(wdev->wiphy, NULL, bssid,
689 wdev->ssid, wdev->ssid_len,
690 IEEE80211_BSS_TYPE_ESS,
691 IEEE80211_PRIVACY_ANY);
692 if (bss)
693 cfg80211_hold_bss(bss_from_pub(bss));
694 }
695
696 if (wdev->current_bss) {
697 cfg80211_unhold_bss(wdev->current_bss);
698 cfg80211_put_bss(wdev->wiphy, &wdev->current_bss->pub);
699 wdev->current_bss = NULL;
700 }
701
702 if (status != WLAN_STATUS_SUCCESS) {
703 kzfree(wdev->connect_keys);
704 wdev->connect_keys = NULL;
705 wdev->ssid_len = 0;
706 if (bss) {
707 cfg80211_unhold_bss(bss_from_pub(bss));
708 cfg80211_put_bss(wdev->wiphy, bss);
709 }
710 cfg80211_sme_free(wdev);
711 return;
712 }
713
714 if (WARN_ON(!bss))
715 return;
716
717 wdev->current_bss = bss_from_pub(bss);
718
719 cfg80211_upload_connect_keys(wdev);
720
721 rcu_read_lock();
722 country_ie = ieee80211_bss_get_ie(bss, WLAN_EID_COUNTRY);
723 if (!country_ie) {
724 rcu_read_unlock();
725 return;
726 }
727
728 country_ie = kmemdup(country_ie, 2 + country_ie[1], GFP_ATOMIC);
729 rcu_read_unlock();
730
731 if (!country_ie)
732 return;
733
734
735
736
737
738
739 regulatory_hint_country_ie(wdev->wiphy, bss->channel->band,
740 country_ie + 2, country_ie[1]);
741 kfree(country_ie);
742}
743
744void cfg80211_connect_result(struct net_device *dev, const u8 *bssid,
745 const u8 *req_ie, size_t req_ie_len,
746 const u8 *resp_ie, size_t resp_ie_len,
747 u16 status, gfp_t gfp)
748{
749 struct wireless_dev *wdev = dev->ieee80211_ptr;
750 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
751 struct cfg80211_event *ev;
752 unsigned long flags;
753
754 ev = kzalloc(sizeof(*ev) + req_ie_len + resp_ie_len, gfp);
755 if (!ev)
756 return;
757
758 ev->type = EVENT_CONNECT_RESULT;
759 if (bssid)
760 memcpy(ev->cr.bssid, bssid, ETH_ALEN);
761 if (req_ie_len) {
762 ev->cr.req_ie = ((u8 *)ev) + sizeof(*ev);
763 ev->cr.req_ie_len = req_ie_len;
764 memcpy((void *)ev->cr.req_ie, req_ie, req_ie_len);
765 }
766 if (resp_ie_len) {
767 ev->cr.resp_ie = ((u8 *)ev) + sizeof(*ev) + req_ie_len;
768 ev->cr.resp_ie_len = resp_ie_len;
769 memcpy((void *)ev->cr.resp_ie, resp_ie, resp_ie_len);
770 }
771 ev->cr.status = status;
772
773 spin_lock_irqsave(&wdev->event_lock, flags);
774 list_add_tail(&ev->list, &wdev->event_list);
775 spin_unlock_irqrestore(&wdev->event_lock, flags);
776 queue_work(cfg80211_wq, &rdev->event_work);
777}
778EXPORT_SYMBOL(cfg80211_connect_result);
779
780
781void __cfg80211_roamed(struct wireless_dev *wdev,
782 struct cfg80211_bss *bss,
783 const u8 *req_ie, size_t req_ie_len,
784 const u8 *resp_ie, size_t resp_ie_len)
785{
786#ifdef CONFIG_CFG80211_WEXT
787 union iwreq_data wrqu;
788#endif
789 ASSERT_WDEV_LOCK(wdev);
790
791 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION &&
792 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT))
793 goto out;
794
795 if (WARN_ON(!wdev->current_bss))
796 goto out;
797
798 cfg80211_unhold_bss(wdev->current_bss);
799 cfg80211_put_bss(wdev->wiphy, &wdev->current_bss->pub);
800 wdev->current_bss = NULL;
801
802 cfg80211_hold_bss(bss_from_pub(bss));
803 wdev->current_bss = bss_from_pub(bss);
804
805 nl80211_send_roamed(wiphy_to_rdev(wdev->wiphy),
806 wdev->netdev, bss->bssid,
807 req_ie, req_ie_len, resp_ie, resp_ie_len,
808 GFP_KERNEL);
809
810#ifdef CONFIG_CFG80211_WEXT
811 if (req_ie) {
812 memset(&wrqu, 0, sizeof(wrqu));
813 wrqu.data.length = req_ie_len;
814 wireless_send_event(wdev->netdev, IWEVASSOCREQIE,
815 &wrqu, req_ie);
816 }
817
818 if (resp_ie) {
819 memset(&wrqu, 0, sizeof(wrqu));
820 wrqu.data.length = resp_ie_len;
821 wireless_send_event(wdev->netdev, IWEVASSOCRESPIE,
822 &wrqu, resp_ie);
823 }
824
825 memset(&wrqu, 0, sizeof(wrqu));
826 wrqu.ap_addr.sa_family = ARPHRD_ETHER;
827 memcpy(wrqu.ap_addr.sa_data, bss->bssid, ETH_ALEN);
828 memcpy(wdev->wext.prev_bssid, bss->bssid, ETH_ALEN);
829 wdev->wext.prev_bssid_valid = true;
830 wireless_send_event(wdev->netdev, SIOCGIWAP, &wrqu, NULL);
831#endif
832
833 return;
834out:
835 cfg80211_put_bss(wdev->wiphy, bss);
836}
837
838void cfg80211_roamed(struct net_device *dev,
839 struct ieee80211_channel *channel,
840 const u8 *bssid,
841 const u8 *req_ie, size_t req_ie_len,
842 const u8 *resp_ie, size_t resp_ie_len, gfp_t gfp)
843{
844 struct wireless_dev *wdev = dev->ieee80211_ptr;
845 struct cfg80211_bss *bss;
846
847 bss = cfg80211_get_bss(wdev->wiphy, channel, bssid, wdev->ssid,
848 wdev->ssid_len,
849 IEEE80211_BSS_TYPE_ESS, IEEE80211_PRIVACY_ANY);
850 if (WARN_ON(!bss))
851 return;
852
853 cfg80211_roamed_bss(dev, bss, req_ie, req_ie_len, resp_ie,
854 resp_ie_len, gfp);
855}
856EXPORT_SYMBOL(cfg80211_roamed);
857
858
859void cfg80211_roamed_bss(struct net_device *dev,
860 struct cfg80211_bss *bss, const u8 *req_ie,
861 size_t req_ie_len, const u8 *resp_ie,
862 size_t resp_ie_len, gfp_t gfp)
863{
864 struct wireless_dev *wdev = dev->ieee80211_ptr;
865 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
866 struct cfg80211_event *ev;
867 unsigned long flags;
868
869 if (WARN_ON(!bss))
870 return;
871
872 ev = kzalloc(sizeof(*ev) + req_ie_len + resp_ie_len, gfp);
873 if (!ev) {
874 cfg80211_put_bss(wdev->wiphy, bss);
875 return;
876 }
877
878 ev->type = EVENT_ROAMED;
879 ev->rm.req_ie = ((u8 *)ev) + sizeof(*ev);
880 ev->rm.req_ie_len = req_ie_len;
881 memcpy((void *)ev->rm.req_ie, req_ie, req_ie_len);
882 ev->rm.resp_ie = ((u8 *)ev) + sizeof(*ev) + req_ie_len;
883 ev->rm.resp_ie_len = resp_ie_len;
884 memcpy((void *)ev->rm.resp_ie, resp_ie, resp_ie_len);
885 ev->rm.bss = bss;
886
887 spin_lock_irqsave(&wdev->event_lock, flags);
888 list_add_tail(&ev->list, &wdev->event_list);
889 spin_unlock_irqrestore(&wdev->event_lock, flags);
890 queue_work(cfg80211_wq, &rdev->event_work);
891}
892EXPORT_SYMBOL(cfg80211_roamed_bss);
893
894void __cfg80211_disconnected(struct net_device *dev, const u8 *ie,
895 size_t ie_len, u16 reason, bool from_ap)
896{
897 struct wireless_dev *wdev = dev->ieee80211_ptr;
898 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
899 int i;
900#ifdef CONFIG_CFG80211_WEXT
901 union iwreq_data wrqu;
902#endif
903
904 ASSERT_WDEV_LOCK(wdev);
905
906 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION &&
907 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT))
908 return;
909
910 if (wdev->current_bss) {
911 cfg80211_unhold_bss(wdev->current_bss);
912 cfg80211_put_bss(wdev->wiphy, &wdev->current_bss->pub);
913 }
914
915 wdev->current_bss = NULL;
916 wdev->ssid_len = 0;
917
918 nl80211_send_disconnected(rdev, dev, reason, ie, ie_len, from_ap);
919
920
921
922
923
924 if (rdev->ops->del_key)
925 for (i = 0; i < 6; i++)
926 rdev_del_key(rdev, dev, i, false, NULL);
927
928 rdev_set_qos_map(rdev, dev, NULL);
929
930#ifdef CONFIG_CFG80211_WEXT
931 memset(&wrqu, 0, sizeof(wrqu));
932 wrqu.ap_addr.sa_family = ARPHRD_ETHER;
933 wireless_send_event(dev, SIOCGIWAP, &wrqu, NULL);
934 wdev->wext.connect.ssid_len = 0;
935#endif
936
937 schedule_work(&cfg80211_disconnect_work);
938}
939
940void cfg80211_disconnected(struct net_device *dev, u16 reason,
941 const u8 *ie, size_t ie_len,
942 bool locally_generated, gfp_t gfp)
943{
944 struct wireless_dev *wdev = dev->ieee80211_ptr;
945 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
946 struct cfg80211_event *ev;
947 unsigned long flags;
948
949 ev = kzalloc(sizeof(*ev) + ie_len, gfp);
950 if (!ev)
951 return;
952
953 ev->type = EVENT_DISCONNECTED;
954 ev->dc.ie = ((u8 *)ev) + sizeof(*ev);
955 ev->dc.ie_len = ie_len;
956 memcpy((void *)ev->dc.ie, ie, ie_len);
957 ev->dc.reason = reason;
958 ev->dc.locally_generated = locally_generated;
959
960 spin_lock_irqsave(&wdev->event_lock, flags);
961 list_add_tail(&ev->list, &wdev->event_list);
962 spin_unlock_irqrestore(&wdev->event_lock, flags);
963 queue_work(cfg80211_wq, &rdev->event_work);
964}
965EXPORT_SYMBOL(cfg80211_disconnected);
966
967
968
969
970int cfg80211_connect(struct cfg80211_registered_device *rdev,
971 struct net_device *dev,
972 struct cfg80211_connect_params *connect,
973 struct cfg80211_cached_keys *connkeys,
974 const u8 *prev_bssid)
975{
976 struct wireless_dev *wdev = dev->ieee80211_ptr;
977 int err;
978
979 ASSERT_WDEV_LOCK(wdev);
980
981 if (WARN_ON(wdev->connect_keys)) {
982 kzfree(wdev->connect_keys);
983 wdev->connect_keys = NULL;
984 }
985
986 cfg80211_oper_and_ht_capa(&connect->ht_capa_mask,
987 rdev->wiphy.ht_capa_mod_mask);
988
989 if (connkeys && connkeys->def >= 0) {
990 int idx;
991 u32 cipher;
992
993 idx = connkeys->def;
994 cipher = connkeys->params[idx].cipher;
995
996 if (cipher == WLAN_CIPHER_SUITE_WEP40 ||
997 cipher == WLAN_CIPHER_SUITE_WEP104) {
998 connect->key_idx = idx;
999 connect->key = connkeys->params[idx].key;
1000 connect->key_len = connkeys->params[idx].key_len;
1001
1002
1003
1004
1005
1006 if (connect->crypto.cipher_group == 0)
1007 connect->crypto.cipher_group = cipher;
1008
1009 if (connect->crypto.n_ciphers_pairwise == 0) {
1010 connect->crypto.n_ciphers_pairwise = 1;
1011 connect->crypto.ciphers_pairwise[0] = cipher;
1012 }
1013 }
1014 }
1015
1016 wdev->connect_keys = connkeys;
1017 memcpy(wdev->ssid, connect->ssid, connect->ssid_len);
1018 wdev->ssid_len = connect->ssid_len;
1019
1020 if (!rdev->ops->connect)
1021 err = cfg80211_sme_connect(wdev, connect, prev_bssid);
1022 else
1023 err = rdev_connect(rdev, dev, connect);
1024
1025 if (err) {
1026 wdev->connect_keys = NULL;
1027 wdev->ssid_len = 0;
1028 return err;
1029 }
1030
1031 return 0;
1032}
1033
1034int cfg80211_disconnect(struct cfg80211_registered_device *rdev,
1035 struct net_device *dev, u16 reason, bool wextev)
1036{
1037 struct wireless_dev *wdev = dev->ieee80211_ptr;
1038 int err = 0;
1039
1040 ASSERT_WDEV_LOCK(wdev);
1041
1042 kzfree(wdev->connect_keys);
1043 wdev->connect_keys = NULL;
1044
1045 if (wdev->conn)
1046 err = cfg80211_sme_disconnect(wdev, reason);
1047 else if (!rdev->ops->disconnect)
1048 cfg80211_mlme_down(rdev, dev);
1049 else if (wdev->current_bss)
1050 err = rdev_disconnect(rdev, dev, reason);
1051
1052 return err;
1053}
1054
