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11#include <linux/etherdevice.h>
12#include <linux/if_arp.h>
13#include <linux/slab.h>
14#include <linux/workqueue.h>
15#include <linux/wireless.h>
16#include <linux/export.h>
17#include <net/iw_handler.h>
18#include <net/cfg80211.h>
19#include <net/rtnetlink.h>
20#include "nl80211.h"
21#include "reg.h"
22#include "rdev-ops.h"
23
24
25
26
27
28
29
30struct cfg80211_conn {
31 struct cfg80211_connect_params params;
32
33 enum {
34 CFG80211_CONN_SCANNING,
35 CFG80211_CONN_SCAN_AGAIN,
36 CFG80211_CONN_AUTHENTICATE_NEXT,
37 CFG80211_CONN_AUTHENTICATING,
38 CFG80211_CONN_AUTH_FAILED_TIMEOUT,
39 CFG80211_CONN_ASSOCIATE_NEXT,
40 CFG80211_CONN_ASSOCIATING,
41 CFG80211_CONN_ASSOC_FAILED,
42 CFG80211_CONN_ASSOC_FAILED_TIMEOUT,
43 CFG80211_CONN_DEAUTH,
44 CFG80211_CONN_ABANDON,
45 CFG80211_CONN_CONNECTED,
46 } state;
47 u8 bssid[ETH_ALEN], prev_bssid[ETH_ALEN];
48 const u8 *ie;
49 size_t ie_len;
50 bool auto_auth, prev_bssid_valid;
51};
52
53static void cfg80211_sme_free(struct wireless_dev *wdev)
54{
55 if (!wdev->conn)
56 return;
57
58 kfree(wdev->conn->ie);
59 kfree(wdev->conn);
60 wdev->conn = NULL;
61}
62
63static int cfg80211_conn_scan(struct wireless_dev *wdev)
64{
65 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
66 struct cfg80211_scan_request *request;
67 int n_channels, err;
68
69 ASSERT_RTNL();
70 ASSERT_WDEV_LOCK(wdev);
71
72 if (rdev->scan_req || rdev->scan_msg)
73 return -EBUSY;
74
75 if (wdev->conn->params.channel)
76 n_channels = 1;
77 else
78 n_channels = ieee80211_get_num_supported_channels(wdev->wiphy);
79
80 request = kzalloc(sizeof(*request) + sizeof(request->ssids[0]) +
81 sizeof(request->channels[0]) * n_channels,
82 GFP_KERNEL);
83 if (!request)
84 return -ENOMEM;
85
86 if (wdev->conn->params.channel) {
87 enum nl80211_band band = wdev->conn->params.channel->band;
88 struct ieee80211_supported_band *sband =
89 wdev->wiphy->bands[band];
90
91 if (!sband) {
92 kfree(request);
93 return -EINVAL;
94 }
95 request->channels[0] = wdev->conn->params.channel;
96 request->rates[band] = (1 << sband->n_bitrates) - 1;
97 } else {
98 int i = 0, j;
99 enum nl80211_band band;
100 struct ieee80211_supported_band *bands;
101 struct ieee80211_channel *channel;
102
103 for (band = 0; band < NUM_NL80211_BANDS; band++) {
104 bands = wdev->wiphy->bands[band];
105 if (!bands)
106 continue;
107 for (j = 0; j < bands->n_channels; j++) {
108 channel = &bands->channels[j];
109 if (channel->flags & IEEE80211_CHAN_DISABLED)
110 continue;
111 request->channels[i++] = channel;
112 }
113 request->rates[band] = (1 << bands->n_bitrates) - 1;
114 }
115 n_channels = i;
116 }
117 request->n_channels = n_channels;
118 request->ssids = (void *)&request->channels[n_channels];
119 request->n_ssids = 1;
120
121 memcpy(request->ssids[0].ssid, wdev->conn->params.ssid,
122 wdev->conn->params.ssid_len);
123 request->ssids[0].ssid_len = wdev->conn->params.ssid_len;
124
125 eth_broadcast_addr(request->bssid);
126
127 request->wdev = wdev;
128 request->wiphy = &rdev->wiphy;
129 request->scan_start = jiffies;
130
131 rdev->scan_req = request;
132
133 err = rdev_scan(rdev, request);
134 if (!err) {
135 wdev->conn->state = CFG80211_CONN_SCANNING;
136 nl80211_send_scan_start(rdev, wdev);
137 dev_hold(wdev->netdev);
138 } else {
139 rdev->scan_req = NULL;
140 kfree(request);
141 }
142 return err;
143}
144
145static int cfg80211_conn_do_work(struct wireless_dev *wdev,
146 enum nl80211_timeout_reason *treason)
147{
148 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
149 struct cfg80211_connect_params *params;
150 struct cfg80211_assoc_request req = {};
151 int err;
152
153 ASSERT_WDEV_LOCK(wdev);
154
155 if (!wdev->conn)
156 return 0;
157
158 params = &wdev->conn->params;
159
160 switch (wdev->conn->state) {
161 case CFG80211_CONN_SCANNING:
162
163 return -ENOENT;
164 case CFG80211_CONN_SCAN_AGAIN:
165 return cfg80211_conn_scan(wdev);
166 case CFG80211_CONN_AUTHENTICATE_NEXT:
167 if (WARN_ON(!rdev->ops->auth))
168 return -EOPNOTSUPP;
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, NULL, 0);
177 case CFG80211_CONN_AUTH_FAILED_TIMEOUT:
178 *treason = NL80211_TIMEOUT_AUTH;
179 return -ENOTCONN;
180 case CFG80211_CONN_ASSOCIATE_NEXT:
181 if (WARN_ON(!rdev->ops->assoc))
182 return -EOPNOTSUPP;
183 wdev->conn->state = CFG80211_CONN_ASSOCIATING;
184 if (wdev->conn->prev_bssid_valid)
185 req.prev_bssid = wdev->conn->prev_bssid;
186 req.ie = params->ie;
187 req.ie_len = params->ie_len;
188 req.use_mfp = params->mfp != NL80211_MFP_NO;
189 req.crypto = params->crypto;
190 req.flags = params->flags;
191 req.ht_capa = params->ht_capa;
192 req.ht_capa_mask = params->ht_capa_mask;
193 req.vht_capa = params->vht_capa;
194 req.vht_capa_mask = params->vht_capa_mask;
195
196 err = cfg80211_mlme_assoc(rdev, wdev->netdev, params->channel,
197 params->bssid, params->ssid,
198 params->ssid_len, &req);
199 if (err)
200 cfg80211_mlme_deauth(rdev, wdev->netdev, params->bssid,
201 NULL, 0,
202 WLAN_REASON_DEAUTH_LEAVING,
203 false);
204 return err;
205 case CFG80211_CONN_ASSOC_FAILED_TIMEOUT:
206 *treason = NL80211_TIMEOUT_ASSOC;
207
208 case CFG80211_CONN_ASSOC_FAILED:
209 cfg80211_mlme_deauth(rdev, wdev->netdev, params->bssid,
210 NULL, 0,
211 WLAN_REASON_DEAUTH_LEAVING, false);
212 return -ENOTCONN;
213 case CFG80211_CONN_DEAUTH:
214 cfg80211_mlme_deauth(rdev, wdev->netdev, params->bssid,
215 NULL, 0,
216 WLAN_REASON_DEAUTH_LEAVING, false);
217
218 case CFG80211_CONN_ABANDON:
219
220 cfg80211_sme_free(wdev);
221 return 0;
222 default:
223 return 0;
224 }
225}
226
227void cfg80211_conn_work(struct work_struct *work)
228{
229 struct cfg80211_registered_device *rdev =
230 container_of(work, struct cfg80211_registered_device, conn_work);
231 struct wireless_dev *wdev;
232 u8 bssid_buf[ETH_ALEN], *bssid = NULL;
233 enum nl80211_timeout_reason treason;
234
235 rtnl_lock();
236
237 list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
238 if (!wdev->netdev)
239 continue;
240
241 wdev_lock(wdev);
242 if (!netif_running(wdev->netdev)) {
243 wdev_unlock(wdev);
244 continue;
245 }
246 if (!wdev->conn ||
247 wdev->conn->state == CFG80211_CONN_CONNECTED) {
248 wdev_unlock(wdev);
249 continue;
250 }
251 if (wdev->conn->params.bssid) {
252 memcpy(bssid_buf, wdev->conn->params.bssid, ETH_ALEN);
253 bssid = bssid_buf;
254 }
255 treason = NL80211_TIMEOUT_UNSPECIFIED;
256 if (cfg80211_conn_do_work(wdev, &treason)) {
257 struct cfg80211_connect_resp_params cr;
258
259 memset(&cr, 0, sizeof(cr));
260 cr.status = -1;
261 cr.bssid = bssid;
262 cr.timeout_reason = treason;
263 __cfg80211_connect_result(wdev->netdev, &cr, false);
264 }
265 wdev_unlock(wdev);
266 }
267
268 rtnl_unlock();
269}
270
271
272static struct cfg80211_bss *cfg80211_get_conn_bss(struct wireless_dev *wdev)
273{
274 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
275 struct cfg80211_bss *bss;
276
277 ASSERT_WDEV_LOCK(wdev);
278
279 bss = cfg80211_get_bss(wdev->wiphy, wdev->conn->params.channel,
280 wdev->conn->params.bssid,
281 wdev->conn->params.ssid,
282 wdev->conn->params.ssid_len,
283 wdev->conn_bss_type,
284 IEEE80211_PRIVACY(wdev->conn->params.privacy));
285 if (!bss)
286 return NULL;
287
288 memcpy(wdev->conn->bssid, bss->bssid, ETH_ALEN);
289 wdev->conn->params.bssid = wdev->conn->bssid;
290 wdev->conn->params.channel = bss->channel;
291 wdev->conn->state = CFG80211_CONN_AUTHENTICATE_NEXT;
292 schedule_work(&rdev->conn_work);
293
294 return bss;
295}
296
297static void __cfg80211_sme_scan_done(struct net_device *dev)
298{
299 struct wireless_dev *wdev = dev->ieee80211_ptr;
300 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
301 struct cfg80211_bss *bss;
302
303 ASSERT_WDEV_LOCK(wdev);
304
305 if (!wdev->conn)
306 return;
307
308 if (wdev->conn->state != CFG80211_CONN_SCANNING &&
309 wdev->conn->state != CFG80211_CONN_SCAN_AGAIN)
310 return;
311
312 bss = cfg80211_get_conn_bss(wdev);
313 if (bss)
314 cfg80211_put_bss(&rdev->wiphy, bss);
315 else
316 schedule_work(&rdev->conn_work);
317}
318
319void cfg80211_sme_scan_done(struct net_device *dev)
320{
321 struct wireless_dev *wdev = dev->ieee80211_ptr;
322
323 wdev_lock(wdev);
324 __cfg80211_sme_scan_done(dev);
325 wdev_unlock(wdev);
326}
327
328void cfg80211_sme_rx_auth(struct wireless_dev *wdev, const u8 *buf, size_t len)
329{
330 struct wiphy *wiphy = wdev->wiphy;
331 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
332 struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)buf;
333 u16 status_code = le16_to_cpu(mgmt->u.auth.status_code);
334
335 ASSERT_WDEV_LOCK(wdev);
336
337 if (!wdev->conn || wdev->conn->state == CFG80211_CONN_CONNECTED)
338 return;
339
340 if (status_code == WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG &&
341 wdev->conn->auto_auth &&
342 wdev->conn->params.auth_type != NL80211_AUTHTYPE_NETWORK_EAP) {
343
344 switch (wdev->conn->params.auth_type) {
345 case NL80211_AUTHTYPE_OPEN_SYSTEM:
346 if (wdev->connect_keys)
347 wdev->conn->params.auth_type =
348 NL80211_AUTHTYPE_SHARED_KEY;
349 else
350 wdev->conn->params.auth_type =
351 NL80211_AUTHTYPE_NETWORK_EAP;
352 break;
353 case NL80211_AUTHTYPE_SHARED_KEY:
354 wdev->conn->params.auth_type =
355 NL80211_AUTHTYPE_NETWORK_EAP;
356 break;
357 default:
358
359 wdev->conn->params.auth_type =
360 NL80211_AUTHTYPE_OPEN_SYSTEM;
361 break;
362 }
363 wdev->conn->state = CFG80211_CONN_AUTHENTICATE_NEXT;
364 schedule_work(&rdev->conn_work);
365 } else if (status_code != WLAN_STATUS_SUCCESS) {
366 struct cfg80211_connect_resp_params cr;
367
368 memset(&cr, 0, sizeof(cr));
369 cr.status = status_code;
370 cr.bssid = mgmt->bssid;
371 cr.timeout_reason = NL80211_TIMEOUT_UNSPECIFIED;
372 __cfg80211_connect_result(wdev->netdev, &cr, false);
373 } else if (wdev->conn->state == CFG80211_CONN_AUTHENTICATING) {
374 wdev->conn->state = CFG80211_CONN_ASSOCIATE_NEXT;
375 schedule_work(&rdev->conn_work);
376 }
377}
378
379bool cfg80211_sme_rx_assoc_resp(struct wireless_dev *wdev, u16 status)
380{
381 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
382
383 if (!wdev->conn)
384 return false;
385
386 if (status == WLAN_STATUS_SUCCESS) {
387 wdev->conn->state = CFG80211_CONN_CONNECTED;
388 return false;
389 }
390
391 if (wdev->conn->prev_bssid_valid) {
392
393
394
395
396
397 wdev->conn->prev_bssid_valid = false;
398 wdev->conn->state = CFG80211_CONN_ASSOCIATE_NEXT;
399 schedule_work(&rdev->conn_work);
400 return true;
401 }
402
403 wdev->conn->state = CFG80211_CONN_ASSOC_FAILED;
404 schedule_work(&rdev->conn_work);
405 return false;
406}
407
408void cfg80211_sme_deauth(struct wireless_dev *wdev)
409{
410 cfg80211_sme_free(wdev);
411}
412
413void cfg80211_sme_auth_timeout(struct wireless_dev *wdev)
414{
415 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
416
417 if (!wdev->conn)
418 return;
419
420 wdev->conn->state = CFG80211_CONN_AUTH_FAILED_TIMEOUT;
421 schedule_work(&rdev->conn_work);
422}
423
424void cfg80211_sme_disassoc(struct wireless_dev *wdev)
425{
426 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
427
428 if (!wdev->conn)
429 return;
430
431 wdev->conn->state = CFG80211_CONN_DEAUTH;
432 schedule_work(&rdev->conn_work);
433}
434
435void cfg80211_sme_assoc_timeout(struct wireless_dev *wdev)
436{
437 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
438
439 if (!wdev->conn)
440 return;
441
442 wdev->conn->state = CFG80211_CONN_ASSOC_FAILED_TIMEOUT;
443 schedule_work(&rdev->conn_work);
444}
445
446void cfg80211_sme_abandon_assoc(struct wireless_dev *wdev)
447{
448 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
449
450 if (!wdev->conn)
451 return;
452
453 wdev->conn->state = CFG80211_CONN_ABANDON;
454 schedule_work(&rdev->conn_work);
455}
456
457static int cfg80211_sme_get_conn_ies(struct wireless_dev *wdev,
458 const u8 *ies, size_t ies_len,
459 const u8 **out_ies, size_t *out_ies_len)
460{
461 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
462 u8 *buf;
463 size_t offs;
464
465 if (!rdev->wiphy.extended_capabilities_len ||
466 (ies && cfg80211_find_ie(WLAN_EID_EXT_CAPABILITY, ies, ies_len))) {
467 *out_ies = kmemdup(ies, ies_len, GFP_KERNEL);
468 if (!*out_ies)
469 return -ENOMEM;
470 *out_ies_len = ies_len;
471 return 0;
472 }
473
474 buf = kmalloc(ies_len + rdev->wiphy.extended_capabilities_len + 2,
475 GFP_KERNEL);
476 if (!buf)
477 return -ENOMEM;
478
479 if (ies_len) {
480 static const u8 before_extcapa[] = {
481
482 WLAN_EID_RSN,
483 WLAN_EID_QOS_CAPA,
484 WLAN_EID_RRM_ENABLED_CAPABILITIES,
485 WLAN_EID_MOBILITY_DOMAIN,
486 WLAN_EID_SUPPORTED_REGULATORY_CLASSES,
487 WLAN_EID_BSS_COEX_2040,
488 };
489
490 offs = ieee80211_ie_split(ies, ies_len, before_extcapa,
491 ARRAY_SIZE(before_extcapa), 0);
492 memcpy(buf, ies, offs);
493
494 memcpy(buf + offs + rdev->wiphy.extended_capabilities_len + 2,
495 ies + offs, ies_len - offs);
496 } else {
497 offs = 0;
498 }
499
500
501 buf[offs] = WLAN_EID_EXT_CAPABILITY;
502 buf[offs + 1] = rdev->wiphy.extended_capabilities_len;
503 memcpy(buf + offs + 2,
504 rdev->wiphy.extended_capabilities,
505 rdev->wiphy.extended_capabilities_len);
506
507 *out_ies = buf;
508 *out_ies_len = ies_len + rdev->wiphy.extended_capabilities_len + 2;
509
510 return 0;
511}
512
513static int cfg80211_sme_connect(struct wireless_dev *wdev,
514 struct cfg80211_connect_params *connect,
515 const u8 *prev_bssid)
516{
517 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
518 struct cfg80211_bss *bss;
519 int err;
520
521 if (!rdev->ops->auth || !rdev->ops->assoc)
522 return -EOPNOTSUPP;
523
524 if (wdev->current_bss) {
525 if (!prev_bssid)
526 return -EALREADY;
527 if (prev_bssid &&
528 !ether_addr_equal(prev_bssid, wdev->current_bss->pub.bssid))
529 return -ENOTCONN;
530 cfg80211_unhold_bss(wdev->current_bss);
531 cfg80211_put_bss(wdev->wiphy, &wdev->current_bss->pub);
532 wdev->current_bss = NULL;
533
534 cfg80211_sme_free(wdev);
535 }
536
537 if (WARN_ON(wdev->conn))
538 return -EINPROGRESS;
539
540 wdev->conn = kzalloc(sizeof(*wdev->conn), GFP_KERNEL);
541 if (!wdev->conn)
542 return -ENOMEM;
543
544
545
546
547 memcpy(&wdev->conn->params, connect, sizeof(*connect));
548 if (connect->bssid) {
549 wdev->conn->params.bssid = wdev->conn->bssid;
550 memcpy(wdev->conn->bssid, connect->bssid, ETH_ALEN);
551 }
552
553 if (cfg80211_sme_get_conn_ies(wdev, connect->ie, connect->ie_len,
554 &wdev->conn->ie,
555 &wdev->conn->params.ie_len)) {
556 kfree(wdev->conn);
557 wdev->conn = NULL;
558 return -ENOMEM;
559 }
560 wdev->conn->params.ie = wdev->conn->ie;
561
562 if (connect->auth_type == NL80211_AUTHTYPE_AUTOMATIC) {
563 wdev->conn->auto_auth = true;
564
565 wdev->conn->params.auth_type =
566 NL80211_AUTHTYPE_OPEN_SYSTEM;
567 } else {
568 wdev->conn->auto_auth = false;
569 }
570
571 wdev->conn->params.ssid = wdev->ssid;
572 wdev->conn->params.ssid_len = wdev->ssid_len;
573
574
575 bss = cfg80211_get_conn_bss(wdev);
576
577 if (prev_bssid) {
578 memcpy(wdev->conn->prev_bssid, prev_bssid, ETH_ALEN);
579 wdev->conn->prev_bssid_valid = true;
580 }
581
582
583 if (bss) {
584 enum nl80211_timeout_reason treason;
585
586 err = cfg80211_conn_do_work(wdev, &treason);
587 cfg80211_put_bss(wdev->wiphy, bss);
588 } else {
589
590 err = cfg80211_conn_scan(wdev);
591
592
593
594
595
596
597 if (err == -EBUSY) {
598 err = 0;
599 wdev->conn->state = CFG80211_CONN_SCAN_AGAIN;
600 }
601 }
602
603 if (err)
604 cfg80211_sme_free(wdev);
605
606 return err;
607}
608
609static int cfg80211_sme_disconnect(struct wireless_dev *wdev, u16 reason)
610{
611 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
612 int err;
613
614 if (!wdev->conn)
615 return 0;
616
617 if (!rdev->ops->deauth)
618 return -EOPNOTSUPP;
619
620 if (wdev->conn->state == CFG80211_CONN_SCANNING ||
621 wdev->conn->state == CFG80211_CONN_SCAN_AGAIN) {
622 err = 0;
623 goto out;
624 }
625
626
627 err = cfg80211_mlme_deauth(rdev, wdev->netdev,
628 wdev->conn->params.bssid,
629 NULL, 0, reason, false);
630 out:
631 cfg80211_sme_free(wdev);
632 return err;
633}
634
635
636
637
638
639static bool cfg80211_is_all_idle(void)
640{
641 struct cfg80211_registered_device *rdev;
642 struct wireless_dev *wdev;
643 bool is_all_idle = true;
644
645
646
647
648
649
650 list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
651 list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
652 wdev_lock(wdev);
653 if (wdev->conn || wdev->current_bss)
654 is_all_idle = false;
655 wdev_unlock(wdev);
656 }
657 }
658
659 return is_all_idle;
660}
661
662static void disconnect_work(struct work_struct *work)
663{
664 rtnl_lock();
665 if (cfg80211_is_all_idle())
666 regulatory_hint_disconnect();
667 rtnl_unlock();
668}
669
670static DECLARE_WORK(cfg80211_disconnect_work, disconnect_work);
671
672
673
674
675
676
677
678
679void __cfg80211_connect_result(struct net_device *dev,
680 struct cfg80211_connect_resp_params *cr,
681 bool wextev)
682{
683 struct wireless_dev *wdev = dev->ieee80211_ptr;
684 const u8 *country_ie;
685#ifdef CONFIG_CFG80211_WEXT
686 union iwreq_data wrqu;
687#endif
688
689 ASSERT_WDEV_LOCK(wdev);
690
691 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION &&
692 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)) {
693 cfg80211_put_bss(wdev->wiphy, cr->bss);
694 return;
695 }
696
697 nl80211_send_connect_result(wiphy_to_rdev(wdev->wiphy), dev, cr,
698 GFP_KERNEL);
699
700#ifdef CONFIG_CFG80211_WEXT
701 if (wextev) {
702 if (cr->req_ie && cr->status == WLAN_STATUS_SUCCESS) {
703 memset(&wrqu, 0, sizeof(wrqu));
704 wrqu.data.length = cr->req_ie_len;
705 wireless_send_event(dev, IWEVASSOCREQIE, &wrqu,
706 cr->req_ie);
707 }
708
709 if (cr->resp_ie && cr->status == WLAN_STATUS_SUCCESS) {
710 memset(&wrqu, 0, sizeof(wrqu));
711 wrqu.data.length = cr->resp_ie_len;
712 wireless_send_event(dev, IWEVASSOCRESPIE, &wrqu,
713 cr->resp_ie);
714 }
715
716 memset(&wrqu, 0, sizeof(wrqu));
717 wrqu.ap_addr.sa_family = ARPHRD_ETHER;
718 if (cr->bssid && cr->status == WLAN_STATUS_SUCCESS) {
719 memcpy(wrqu.ap_addr.sa_data, cr->bssid, ETH_ALEN);
720 memcpy(wdev->wext.prev_bssid, cr->bssid, ETH_ALEN);
721 wdev->wext.prev_bssid_valid = true;
722 }
723 wireless_send_event(dev, SIOCGIWAP, &wrqu, NULL);
724 }
725#endif
726
727 if (!cr->bss && (cr->status == WLAN_STATUS_SUCCESS)) {
728 WARN_ON_ONCE(!wiphy_to_rdev(wdev->wiphy)->ops->connect);
729 cr->bss = cfg80211_get_bss(wdev->wiphy, NULL, cr->bssid,
730 wdev->ssid, wdev->ssid_len,
731 wdev->conn_bss_type,
732 IEEE80211_PRIVACY_ANY);
733 if (cr->bss)
734 cfg80211_hold_bss(bss_from_pub(cr->bss));
735 }
736
737 if (wdev->current_bss) {
738 cfg80211_unhold_bss(wdev->current_bss);
739 cfg80211_put_bss(wdev->wiphy, &wdev->current_bss->pub);
740 wdev->current_bss = NULL;
741 }
742
743 if (cr->status != WLAN_STATUS_SUCCESS) {
744 kzfree(wdev->connect_keys);
745 wdev->connect_keys = NULL;
746 wdev->ssid_len = 0;
747 wdev->conn_owner_nlportid = 0;
748 if (cr->bss) {
749 cfg80211_unhold_bss(bss_from_pub(cr->bss));
750 cfg80211_put_bss(wdev->wiphy, cr->bss);
751 }
752 cfg80211_sme_free(wdev);
753 return;
754 }
755
756 if (WARN_ON(!cr->bss))
757 return;
758
759 wdev->current_bss = bss_from_pub(cr->bss);
760
761 if (!(wdev->wiphy->flags & WIPHY_FLAG_HAS_STATIC_WEP))
762 cfg80211_upload_connect_keys(wdev);
763
764 rcu_read_lock();
765 country_ie = ieee80211_bss_get_ie(cr->bss, WLAN_EID_COUNTRY);
766 if (!country_ie) {
767 rcu_read_unlock();
768 return;
769 }
770
771 country_ie = kmemdup(country_ie, 2 + country_ie[1], GFP_ATOMIC);
772 rcu_read_unlock();
773
774 if (!country_ie)
775 return;
776
777
778
779
780
781
782 regulatory_hint_country_ie(wdev->wiphy, cr->bss->channel->band,
783 country_ie + 2, country_ie[1]);
784 kfree(country_ie);
785}
786
787
788void cfg80211_connect_done(struct net_device *dev,
789 struct cfg80211_connect_resp_params *params,
790 gfp_t gfp)
791{
792 struct wireless_dev *wdev = dev->ieee80211_ptr;
793 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
794 struct cfg80211_event *ev;
795 unsigned long flags;
796 u8 *next;
797
798 if (params->bss) {
799
800 struct cfg80211_internal_bss *ibss = bss_from_pub(params->bss);
801
802 if (WARN_ON(list_empty(&ibss->list))) {
803 cfg80211_put_bss(wdev->wiphy, params->bss);
804 return;
805 }
806 }
807
808 ev = kzalloc(sizeof(*ev) + (params->bssid ? ETH_ALEN : 0) +
809 params->req_ie_len + params->resp_ie_len +
810 params->fils_kek_len + params->pmk_len +
811 (params->pmkid ? WLAN_PMKID_LEN : 0), gfp);
812 if (!ev) {
813 cfg80211_put_bss(wdev->wiphy, params->bss);
814 return;
815 }
816
817 ev->type = EVENT_CONNECT_RESULT;
818 next = ((u8 *)ev) + sizeof(*ev);
819 if (params->bssid) {
820 ev->cr.bssid = next;
821 memcpy((void *)ev->cr.bssid, params->bssid, ETH_ALEN);
822 next += ETH_ALEN;
823 }
824 if (params->req_ie_len) {
825 ev->cr.req_ie = next;
826 ev->cr.req_ie_len = params->req_ie_len;
827 memcpy((void *)ev->cr.req_ie, params->req_ie,
828 params->req_ie_len);
829 next += params->req_ie_len;
830 }
831 if (params->resp_ie_len) {
832 ev->cr.resp_ie = next;
833 ev->cr.resp_ie_len = params->resp_ie_len;
834 memcpy((void *)ev->cr.resp_ie, params->resp_ie,
835 params->resp_ie_len);
836 next += params->resp_ie_len;
837 }
838 if (params->fils_kek_len) {
839 ev->cr.fils_kek = next;
840 ev->cr.fils_kek_len = params->fils_kek_len;
841 memcpy((void *)ev->cr.fils_kek, params->fils_kek,
842 params->fils_kek_len);
843 next += params->fils_kek_len;
844 }
845 if (params->pmk_len) {
846 ev->cr.pmk = next;
847 ev->cr.pmk_len = params->pmk_len;
848 memcpy((void *)ev->cr.pmk, params->pmk, params->pmk_len);
849 next += params->pmk_len;
850 }
851 if (params->pmkid) {
852 ev->cr.pmkid = next;
853 memcpy((void *)ev->cr.pmkid, params->pmkid, WLAN_PMKID_LEN);
854 next += WLAN_PMKID_LEN;
855 }
856 ev->cr.update_erp_next_seq_num = params->update_erp_next_seq_num;
857 if (params->update_erp_next_seq_num)
858 ev->cr.fils_erp_next_seq_num = params->fils_erp_next_seq_num;
859 if (params->bss)
860 cfg80211_hold_bss(bss_from_pub(params->bss));
861 ev->cr.bss = params->bss;
862 ev->cr.status = params->status;
863 ev->cr.timeout_reason = params->timeout_reason;
864
865 spin_lock_irqsave(&wdev->event_lock, flags);
866 list_add_tail(&ev->list, &wdev->event_list);
867 spin_unlock_irqrestore(&wdev->event_lock, flags);
868 queue_work(cfg80211_wq, &rdev->event_work);
869}
870EXPORT_SYMBOL(cfg80211_connect_done);
871
872
873void __cfg80211_roamed(struct wireless_dev *wdev,
874 struct cfg80211_roam_info *info)
875{
876#ifdef CONFIG_CFG80211_WEXT
877 union iwreq_data wrqu;
878#endif
879 ASSERT_WDEV_LOCK(wdev);
880
881 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION &&
882 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT))
883 goto out;
884
885 if (WARN_ON(!wdev->current_bss))
886 goto out;
887
888 cfg80211_unhold_bss(wdev->current_bss);
889 cfg80211_put_bss(wdev->wiphy, &wdev->current_bss->pub);
890 wdev->current_bss = NULL;
891
892 if (WARN_ON(!info->bss))
893 return;
894
895 cfg80211_hold_bss(bss_from_pub(info->bss));
896 wdev->current_bss = bss_from_pub(info->bss);
897
898 nl80211_send_roamed(wiphy_to_rdev(wdev->wiphy),
899 wdev->netdev, info, GFP_KERNEL);
900
901#ifdef CONFIG_CFG80211_WEXT
902 if (info->req_ie) {
903 memset(&wrqu, 0, sizeof(wrqu));
904 wrqu.data.length = info->req_ie_len;
905 wireless_send_event(wdev->netdev, IWEVASSOCREQIE,
906 &wrqu, info->req_ie);
907 }
908
909 if (info->resp_ie) {
910 memset(&wrqu, 0, sizeof(wrqu));
911 wrqu.data.length = info->resp_ie_len;
912 wireless_send_event(wdev->netdev, IWEVASSOCRESPIE,
913 &wrqu, info->resp_ie);
914 }
915
916 memset(&wrqu, 0, sizeof(wrqu));
917 wrqu.ap_addr.sa_family = ARPHRD_ETHER;
918 memcpy(wrqu.ap_addr.sa_data, info->bss->bssid, ETH_ALEN);
919 memcpy(wdev->wext.prev_bssid, info->bss->bssid, ETH_ALEN);
920 wdev->wext.prev_bssid_valid = true;
921 wireless_send_event(wdev->netdev, SIOCGIWAP, &wrqu, NULL);
922#endif
923
924 return;
925out:
926 cfg80211_put_bss(wdev->wiphy, info->bss);
927}
928
929
930void cfg80211_roamed(struct net_device *dev, struct cfg80211_roam_info *info,
931 gfp_t gfp)
932{
933 struct wireless_dev *wdev = dev->ieee80211_ptr;
934 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
935 struct cfg80211_event *ev;
936 unsigned long flags;
937
938 if (!info->bss) {
939 info->bss = cfg80211_get_bss(wdev->wiphy, info->channel,
940 info->bssid, wdev->ssid,
941 wdev->ssid_len,
942 wdev->conn_bss_type,
943 IEEE80211_PRIVACY_ANY);
944 }
945
946 if (WARN_ON(!info->bss))
947 return;
948
949 ev = kzalloc(sizeof(*ev) + info->req_ie_len + info->resp_ie_len, gfp);
950 if (!ev) {
951 cfg80211_put_bss(wdev->wiphy, info->bss);
952 return;
953 }
954
955 ev->type = EVENT_ROAMED;
956 ev->rm.req_ie = ((u8 *)ev) + sizeof(*ev);
957 ev->rm.req_ie_len = info->req_ie_len;
958 memcpy((void *)ev->rm.req_ie, info->req_ie, info->req_ie_len);
959 ev->rm.resp_ie = ((u8 *)ev) + sizeof(*ev) + info->req_ie_len;
960 ev->rm.resp_ie_len = info->resp_ie_len;
961 memcpy((void *)ev->rm.resp_ie, info->resp_ie, info->resp_ie_len);
962 ev->rm.bss = info->bss;
963 ev->rm.authorized = info->authorized;
964
965 spin_lock_irqsave(&wdev->event_lock, flags);
966 list_add_tail(&ev->list, &wdev->event_list);
967 spin_unlock_irqrestore(&wdev->event_lock, flags);
968 queue_work(cfg80211_wq, &rdev->event_work);
969}
970EXPORT_SYMBOL(cfg80211_roamed);
971
972void __cfg80211_disconnected(struct net_device *dev, const u8 *ie,
973 size_t ie_len, u16 reason, bool from_ap)
974{
975 struct wireless_dev *wdev = dev->ieee80211_ptr;
976 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
977 int i;
978#ifdef CONFIG_CFG80211_WEXT
979 union iwreq_data wrqu;
980#endif
981
982 ASSERT_WDEV_LOCK(wdev);
983
984 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION &&
985 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT))
986 return;
987
988 if (wdev->current_bss) {
989 cfg80211_unhold_bss(wdev->current_bss);
990 cfg80211_put_bss(wdev->wiphy, &wdev->current_bss->pub);
991 }
992
993 wdev->current_bss = NULL;
994 wdev->ssid_len = 0;
995 wdev->conn_owner_nlportid = 0;
996
997 nl80211_send_disconnected(rdev, dev, reason, ie, ie_len, from_ap);
998
999
1000 if (rdev->ops->crit_proto_stop && rdev->crit_proto_nlportid) {
1001 rdev->crit_proto_nlportid = 0;
1002 rdev_crit_proto_stop(rdev, wdev);
1003 }
1004
1005
1006
1007
1008
1009 if (rdev->ops->del_key)
1010 for (i = 0; i < 6; i++)
1011 rdev_del_key(rdev, dev, i, false, NULL);
1012
1013 rdev_set_qos_map(rdev, dev, NULL);
1014
1015#ifdef CONFIG_CFG80211_WEXT
1016 memset(&wrqu, 0, sizeof(wrqu));
1017 wrqu.ap_addr.sa_family = ARPHRD_ETHER;
1018 wireless_send_event(dev, SIOCGIWAP, &wrqu, NULL);
1019 wdev->wext.connect.ssid_len = 0;
1020#endif
1021
1022 schedule_work(&cfg80211_disconnect_work);
1023}
1024
1025void cfg80211_disconnected(struct net_device *dev, u16 reason,
1026 const u8 *ie, size_t ie_len,
1027 bool locally_generated, gfp_t gfp)
1028{
1029 struct wireless_dev *wdev = dev->ieee80211_ptr;
1030 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
1031 struct cfg80211_event *ev;
1032 unsigned long flags;
1033
1034 ev = kzalloc(sizeof(*ev) + ie_len, gfp);
1035 if (!ev)
1036 return;
1037
1038 ev->type = EVENT_DISCONNECTED;
1039 ev->dc.ie = ((u8 *)ev) + sizeof(*ev);
1040 ev->dc.ie_len = ie_len;
1041 memcpy((void *)ev->dc.ie, ie, ie_len);
1042 ev->dc.reason = reason;
1043 ev->dc.locally_generated = locally_generated;
1044
1045 spin_lock_irqsave(&wdev->event_lock, flags);
1046 list_add_tail(&ev->list, &wdev->event_list);
1047 spin_unlock_irqrestore(&wdev->event_lock, flags);
1048 queue_work(cfg80211_wq, &rdev->event_work);
1049}
1050EXPORT_SYMBOL(cfg80211_disconnected);
1051
1052
1053
1054
1055int cfg80211_connect(struct cfg80211_registered_device *rdev,
1056 struct net_device *dev,
1057 struct cfg80211_connect_params *connect,
1058 struct cfg80211_cached_keys *connkeys,
1059 const u8 *prev_bssid)
1060{
1061 struct wireless_dev *wdev = dev->ieee80211_ptr;
1062 int err;
1063
1064 ASSERT_WDEV_LOCK(wdev);
1065
1066 if (WARN_ON(wdev->connect_keys)) {
1067 kzfree(wdev->connect_keys);
1068 wdev->connect_keys = NULL;
1069 }
1070
1071 cfg80211_oper_and_ht_capa(&connect->ht_capa_mask,
1072 rdev->wiphy.ht_capa_mod_mask);
1073
1074 if (connkeys && connkeys->def >= 0) {
1075 int idx;
1076 u32 cipher;
1077
1078 idx = connkeys->def;
1079 cipher = connkeys->params[idx].cipher;
1080
1081 if (cipher == WLAN_CIPHER_SUITE_WEP40 ||
1082 cipher == WLAN_CIPHER_SUITE_WEP104) {
1083 connect->key_idx = idx;
1084 connect->key = connkeys->params[idx].key;
1085 connect->key_len = connkeys->params[idx].key_len;
1086
1087
1088
1089
1090
1091 if (connect->crypto.cipher_group == 0)
1092 connect->crypto.cipher_group = cipher;
1093
1094 if (connect->crypto.n_ciphers_pairwise == 0) {
1095 connect->crypto.n_ciphers_pairwise = 1;
1096 connect->crypto.ciphers_pairwise[0] = cipher;
1097 }
1098 }
1099
1100 connect->crypto.wep_keys = connkeys->params;
1101 connect->crypto.wep_tx_key = connkeys->def;
1102 } else {
1103 if (WARN_ON(connkeys))
1104 return -EINVAL;
1105 }
1106
1107 wdev->connect_keys = connkeys;
1108 memcpy(wdev->ssid, connect->ssid, connect->ssid_len);
1109 wdev->ssid_len = connect->ssid_len;
1110
1111 wdev->conn_bss_type = connect->pbss ? IEEE80211_BSS_TYPE_PBSS :
1112 IEEE80211_BSS_TYPE_ESS;
1113
1114 if (!rdev->ops->connect)
1115 err = cfg80211_sme_connect(wdev, connect, prev_bssid);
1116 else
1117 err = rdev_connect(rdev, dev, connect);
1118
1119 if (err) {
1120 wdev->connect_keys = NULL;
1121 wdev->ssid_len = 0;
1122 return err;
1123 }
1124
1125 return 0;
1126}
1127
1128int cfg80211_disconnect(struct cfg80211_registered_device *rdev,
1129 struct net_device *dev, u16 reason, bool wextev)
1130{
1131 struct wireless_dev *wdev = dev->ieee80211_ptr;
1132 int err = 0;
1133
1134 ASSERT_WDEV_LOCK(wdev);
1135
1136 kzfree(wdev->connect_keys);
1137 wdev->connect_keys = NULL;
1138
1139 wdev->conn_owner_nlportid = 0;
1140
1141 if (wdev->conn)
1142 err = cfg80211_sme_disconnect(wdev, reason);
1143 else if (!rdev->ops->disconnect)
1144 cfg80211_mlme_down(rdev, dev);
1145 else if (wdev->ssid_len)
1146 err = rdev_disconnect(rdev, dev, reason);
1147
1148 return err;
1149}
1150
1151
1152
1153
1154
1155void cfg80211_autodisconnect_wk(struct work_struct *work)
1156{
1157 struct wireless_dev *wdev =
1158 container_of(work, struct wireless_dev, disconnect_wk);
1159 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
1160
1161 wdev_lock(wdev);
1162
1163 if (wdev->conn_owner_nlportid) {
1164
1165
1166
1167
1168 if (rdev->ops->disconnect || wdev->current_bss)
1169 cfg80211_disconnect(rdev, wdev->netdev,
1170 WLAN_REASON_DEAUTH_LEAVING, true);
1171 else
1172 cfg80211_mlme_deauth(rdev, wdev->netdev,
1173 wdev->disconnect_bssid, NULL, 0,
1174 WLAN_REASON_DEAUTH_LEAVING, false);
1175 }
1176
1177 wdev_unlock(wdev);
1178}
1179
