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cfg80211: avoid flushing the global workqueue for core reg hints
[GitHub/mt8127/android_kernel_alcatel_ttab.git] / net / wireless / sme.c
CommitLineData
b23aa676
SO		 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/workqueue.h>
a9a11622
JB		 11#include <linux/wireless.h>
12#include <net/iw_handler.h>
b23aa676
SO		 13#include <net/cfg80211.h>
14#include <net/rtnetlink.h>
15#include "nl80211.h"
8b19e6ca 16#include "reg.h"
b23aa676 17
6829c878
JB		 18struct cfg80211_conn {
19 struct cfg80211_connect_params params;
20 /* these are sub-states of the _CONNECTING sme_state */
21 enum {
22 CFG80211_CONN_IDLE,
23 CFG80211_CONN_SCANNING,
24 CFG80211_CONN_SCAN_AGAIN,
25 CFG80211_CONN_AUTHENTICATE_NEXT,
26 CFG80211_CONN_AUTHENTICATING,
27 CFG80211_CONN_ASSOCIATE_NEXT,
28 CFG80211_CONN_ASSOCIATING,
7d930bc3 29 CFG80211_CONN_DEAUTH_ASSOC_FAIL,
6829c878 30 } state;
f401a6f7 31 u8 bssid[ETH_ALEN], prev_bssid[ETH_ALEN];
6829c878
JB		 32 u8 *ie;
33 size_t ie_len;
f401a6f7 34 bool auto_auth, prev_bssid_valid;
6829c878
JB		 35};
36
37
38static int cfg80211_conn_scan(struct wireless_dev *wdev)
39{
79c97e97 40 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
6829c878
JB		 41 struct cfg80211_scan_request *request;
42 int n_channels, err;
43
44 ASSERT_RTNL();
79c97e97 45 ASSERT_RDEV_LOCK(rdev);
667503dd 46 ASSERT_WDEV_LOCK(wdev);
6829c878 47
79c97e97 48 if (rdev->scan_req)
6829c878
JB		 49 return -EBUSY;
50
51 if (wdev->conn->params.channel) {
52 n_channels = 1;
53 } else {
54 enum ieee80211_band band;
55 n_channels = 0;
56
57 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
58 if (!wdev->wiphy->bands[band])
59 continue;
60 n_channels += wdev->wiphy->bands[band]->n_channels;
61 }
62 }
63 request = kzalloc(sizeof(*request) + sizeof(request->ssids[0]) +
64 sizeof(request->channels[0]) * n_channels,
65 GFP_KERNEL);
66 if (!request)
67 return -ENOMEM;
68
6829c878
JB		 69 if (wdev->conn->params.channel)
70 request->channels[0] = wdev->conn->params.channel;
71 else {
72 int i = 0, j;
73 enum ieee80211_band band;
74
75 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
76 if (!wdev->wiphy->bands[band])
77 continue;
78 for (j = 0; j < wdev->wiphy->bands[band]->n_channels;
79 i++, j++)
80 request->channels[i] =
81 &wdev->wiphy->bands[band]->channels[j];
82 }
83 }
84 request->n_channels = n_channels;
5ba63533 85 request->ssids = (void *)&request->channels[n_channels];
6829c878
JB		 86 request->n_ssids = 1;
87
88 memcpy(request->ssids[0].ssid, wdev->conn->params.ssid,
89 wdev->conn->params.ssid_len);
90 request->ssids[0].ssid_len = wdev->conn->params.ssid_len;
91
463d0183 92 request->dev = wdev->netdev;
79c97e97 93 request->wiphy = &rdev->wiphy;
6829c878 94
79c97e97 95 rdev->scan_req = request;
6829c878 96
79c97e97 97 err = rdev->ops->scan(wdev->wiphy, wdev->netdev, request);
6829c878
JB		 98 if (!err) {
99 wdev->conn->state = CFG80211_CONN_SCANNING;
79c97e97 100 nl80211_send_scan_start(rdev, wdev->netdev);
463d0183 101 dev_hold(wdev->netdev);
6829c878 102 } else {
79c97e97 103 rdev->scan_req = NULL;
6829c878
JB		 104 kfree(request);
105 }
106 return err;
107}
108
109static int cfg80211_conn_do_work(struct wireless_dev *wdev)
110{
79c97e97 111 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
19957bb3 112 struct cfg80211_connect_params *params;
f401a6f7 113 const u8 *prev_bssid = NULL;
19957bb3 114 int err;
6829c878 115
667503dd
JB		 116 ASSERT_WDEV_LOCK(wdev);
117
6829c878
JB		 118 if (!wdev->conn)
119 return 0;
120
19957bb3
JB		 121 params = &wdev->conn->params;
122
6829c878
JB		 123 switch (wdev->conn->state) {
124 case CFG80211_CONN_SCAN_AGAIN:
125 return cfg80211_conn_scan(wdev);
126 case CFG80211_CONN_AUTHENTICATE_NEXT:
79c97e97 127 BUG_ON(!rdev->ops->auth);
19957bb3 128 wdev->conn->state = CFG80211_CONN_AUTHENTICATING;
79c97e97 129 return __cfg80211_mlme_auth(rdev, wdev->netdev,
667503dd
JB		 130 params->channel, params->auth_type,
131 params->bssid,
132 params->ssid, params->ssid_len,
fffd0934
JB		 133 NULL, 0,
134 params->key, params->key_len,
135 params->key_idx);
6829c878 136 case CFG80211_CONN_ASSOCIATE_NEXT:
79c97e97 137 BUG_ON(!rdev->ops->assoc);
19957bb3 138 wdev->conn->state = CFG80211_CONN_ASSOCIATING;
f401a6f7
JB		 139 if (wdev->conn->prev_bssid_valid)
140 prev_bssid = wdev->conn->prev_bssid;
79c97e97 141 err = __cfg80211_mlme_assoc(rdev, wdev->netdev,
667503dd 142 params->channel, params->bssid,
f401a6f7 143 prev_bssid,
667503dd
JB		 144 params->ssid, params->ssid_len,
145 params->ie, params->ie_len,
146 false, &params->crypto);
19957bb3 147 if (err)
79c97e97 148 __cfg80211_mlme_deauth(rdev, wdev->netdev, params->bssid,
667503dd
JB		 149 NULL, 0,
150 WLAN_REASON_DEAUTH_LEAVING);
19957bb3 151 return err;
7d930bc3
JB		 152 case CFG80211_CONN_DEAUTH_ASSOC_FAIL:
153 __cfg80211_mlme_deauth(rdev, wdev->netdev, params->bssid,
154 NULL, 0,
155 WLAN_REASON_DEAUTH_LEAVING);
156 /* return an error so that we call __cfg80211_connect_result() */
157 return -EINVAL;
6829c878
JB		 158 default:
159 return 0;
160 }
161}
162
163void cfg80211_conn_work(struct work_struct *work)
164{
79c97e97 165 struct cfg80211_registered_device *rdev =
6829c878
JB		 166 container_of(work, struct cfg80211_registered_device, conn_work);
167 struct wireless_dev *wdev;
7400f42e 168 u8 bssid_buf[ETH_ALEN], *bssid = NULL;
6829c878
JB		 169
170 rtnl_lock();
79c97e97
JB		 171 cfg80211_lock_rdev(rdev);
172 mutex_lock(&rdev->devlist_mtx);
6829c878 173
79c97e97 174 list_for_each_entry(wdev, &rdev->netdev_list, list) {
667503dd
JB		 175 wdev_lock(wdev);
176 if (!netif_running(wdev->netdev)) {
177 wdev_unlock(wdev);
6829c878 178 continue;
667503dd
JB		 179 }
180 if (wdev->sme_state != CFG80211_SME_CONNECTING) {
181 wdev_unlock(wdev);
6829c878 182 continue;
667503dd 183 }
7400f42e
JB		 184 if (wdev->conn->params.bssid) {
185 memcpy(bssid_buf, wdev->conn->params.bssid, ETH_ALEN);
186 bssid = bssid_buf;
187 }
6829c878 188 if (cfg80211_conn_do_work(wdev))
667503dd 189 __cfg80211_connect_result(
7d930bc3 190 wdev->netdev, bssid,
667503dd
JB		 191 NULL, 0, NULL, 0,
192 WLAN_STATUS_UNSPECIFIED_FAILURE,
df7fc0f9 193 false, NULL);
667503dd 194 wdev_unlock(wdev);
6829c878
JB		 195 }
196
79c97e97
JB		 197 mutex_unlock(&rdev->devlist_mtx);
198 cfg80211_unlock_rdev(rdev);
6829c878
JB		 199 rtnl_unlock();
200}
201
bbac31f4 202static struct cfg80211_bss *cfg80211_get_conn_bss(struct wireless_dev *wdev)
6829c878 203{
79c97e97 204 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
6829c878
JB		 205 struct cfg80211_bss *bss;
206 u16 capa = WLAN_CAPABILITY_ESS;
207
667503dd
JB		 208 ASSERT_WDEV_LOCK(wdev);
209
6829c878
JB		 210 if (wdev->conn->params.privacy)
211 capa |= WLAN_CAPABILITY_PRIVACY;
212
213 bss = cfg80211_get_bss(wdev->wiphy, NULL, wdev->conn->params.bssid,
214 wdev->conn->params.ssid,
215 wdev->conn->params.ssid_len,
216 WLAN_CAPABILITY_ESS | WLAN_CAPABILITY_PRIVACY,
217 capa);
6829c878 218 if (!bss)
bbac31f4 219 return NULL;
6829c878
JB		 220
221 memcpy(wdev->conn->bssid, bss->bssid, ETH_ALEN);
222 wdev->conn->params.bssid = wdev->conn->bssid;
223 wdev->conn->params.channel = bss->channel;
224 wdev->conn->state = CFG80211_CONN_AUTHENTICATE_NEXT;
79c97e97 225 schedule_work(&rdev->conn_work);
6829c878 226
bbac31f4 227 return bss;
6829c878
JB		 228}
229
667503dd 230static void __cfg80211_sme_scan_done(struct net_device *dev)
6829c878
JB		 231{
232 struct wireless_dev *wdev = dev->ieee80211_ptr;
79c97e97 233 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
bbac31f4 234 struct cfg80211_bss *bss;
6829c878 235
667503dd
JB		 236 ASSERT_WDEV_LOCK(wdev);
237
6829c878
JB		 238 if (wdev->sme_state != CFG80211_SME_CONNECTING)
239 return;
240
d4b1a687 241 if (!wdev->conn)
6829c878
JB		 242 return;
243
244 if (wdev->conn->state != CFG80211_CONN_SCANNING &&
245 wdev->conn->state != CFG80211_CONN_SCAN_AGAIN)
246 return;
247
bbac31f4
JB		 248 bss = cfg80211_get_conn_bss(wdev);
249 if (bss) {
250 cfg80211_put_bss(bss);
251 } else {
6829c878
JB		 252 /* not found */
253 if (wdev->conn->state == CFG80211_CONN_SCAN_AGAIN)
79c97e97 254 schedule_work(&rdev->conn_work);
6829c878 255 else
667503dd
JB		 256 __cfg80211_connect_result(
257 wdev->netdev,
258 wdev->conn->params.bssid,
259 NULL, 0, NULL, 0,
260 WLAN_STATUS_UNSPECIFIED_FAILURE,
df7fc0f9 261 false, NULL);
6829c878
JB		 262 }
263}
264
667503dd
JB		 265void cfg80211_sme_scan_done(struct net_device *dev)
266{
267 struct wireless_dev *wdev = dev->ieee80211_ptr;
268
59bbb6f7 269 mutex_lock(&wiphy_to_dev(wdev->wiphy)->devlist_mtx);
667503dd
JB		 270 wdev_lock(wdev);
271 __cfg80211_sme_scan_done(dev);
272 wdev_unlock(wdev);
59bbb6f7 273 mutex_unlock(&wiphy_to_dev(wdev->wiphy)->devlist_mtx);
667503dd
JB		 274}
275
276void cfg80211_sme_rx_auth(struct net_device *dev,
277 const u8 *buf, size_t len)
6829c878
JB		 278{
279 struct wireless_dev *wdev = dev->ieee80211_ptr;
280 struct wiphy *wiphy = wdev->wiphy;
281 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
282 struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)buf;
283 u16 status_code = le16_to_cpu(mgmt->u.auth.status_code);
284
667503dd
JB		 285 ASSERT_WDEV_LOCK(wdev);
286
6829c878
JB		 287 /* should only RX auth frames when connecting */
288 if (wdev->sme_state != CFG80211_SME_CONNECTING)
289 return;
290
291 if (WARN_ON(!wdev->conn))
292 return;
293
294 if (status_code == WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG &&
295 wdev->conn->auto_auth &&
296 wdev->conn->params.auth_type != NL80211_AUTHTYPE_NETWORK_EAP) {
297 /* select automatically between only open, shared, leap */
298 switch (wdev->conn->params.auth_type) {
299 case NL80211_AUTHTYPE_OPEN_SYSTEM:
fffd0934
JB		 300 if (wdev->connect_keys)
301 wdev->conn->params.auth_type =
302 NL80211_AUTHTYPE_SHARED_KEY;
303 else
304 wdev->conn->params.auth_type =
305 NL80211_AUTHTYPE_NETWORK_EAP;
6829c878
JB		 306 break;
307 case NL80211_AUTHTYPE_SHARED_KEY:
308 wdev->conn->params.auth_type =
309 NL80211_AUTHTYPE_NETWORK_EAP;
310 break;
311 default:
312 /* huh? */
313 wdev->conn->params.auth_type =
314 NL80211_AUTHTYPE_OPEN_SYSTEM;
315 break;
316 }
317 wdev->conn->state = CFG80211_CONN_AUTHENTICATE_NEXT;
318 schedule_work(&rdev->conn_work);
19957bb3 319 } else if (status_code != WLAN_STATUS_SUCCESS) {
4bde0f7d 320 __cfg80211_connect_result(dev, mgmt->bssid, NULL, 0, NULL, 0,
df7fc0f9 321 status_code, false, NULL);
19957bb3 322 } else if (wdev->sme_state == CFG80211_SME_CONNECTING &&
6829c878
JB		 323 wdev->conn->state == CFG80211_CONN_AUTHENTICATING) {
324 wdev->conn->state = CFG80211_CONN_ASSOCIATE_NEXT;
325 schedule_work(&rdev->conn_work);
326 }
327}
b23aa676 328
f401a6f7
JB		 329bool cfg80211_sme_failed_reassoc(struct wireless_dev *wdev)
330{
331 struct wiphy *wiphy = wdev->wiphy;
332 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
333
334 if (WARN_ON(!wdev->conn))
335 return false;
336
337 if (!wdev->conn->prev_bssid_valid)
338 return false;
339
340 /*
341 * Some stupid APs don't accept reassoc, so we
342 * need to fall back to trying regular assoc.
343 */
344 wdev->conn->prev_bssid_valid = false;
345 wdev->conn->state = CFG80211_CONN_ASSOCIATE_NEXT;
346 schedule_work(&rdev->conn_work);
347
348 return true;
349}
350
7d930bc3
JB		 351void cfg80211_sme_failed_assoc(struct wireless_dev *wdev)
352{
353 struct wiphy *wiphy = wdev->wiphy;
354 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
355
356 wdev->conn->state = CFG80211_CONN_DEAUTH_ASSOC_FAIL;
357 schedule_work(&rdev->conn_work);
358}
359
667503dd
JB		 360void __cfg80211_connect_result(struct net_device *dev, const u8 *bssid,
361 const u8 *req_ie, size_t req_ie_len,
362 const u8 *resp_ie, size_t resp_ie_len,
df7fc0f9
JB		 363 u16 status, bool wextev,
364 struct cfg80211_bss *bss)
b23aa676
SO		 365{
366 struct wireless_dev *wdev = dev->ieee80211_ptr;
8b19e6ca 367 u8 *country_ie;
3d23e349 368#ifdef CONFIG_CFG80211_WEXT
b23aa676
SO		 369 union iwreq_data wrqu;
370#endif
371
667503dd
JB		 372 ASSERT_WDEV_LOCK(wdev);
373
b23aa676
SO		 374 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION))
375 return;
376
f7969969 377 if (wdev->sme_state != CFG80211_SME_CONNECTING)
ea416a79
JB		 378 return;
379
380 nl80211_send_connect_result(wiphy_to_dev(wdev->wiphy), dev,
e45cd82a 381 bssid, req_ie, req_ie_len,
ea416a79
JB		 382 resp_ie, resp_ie_len,
383 status, GFP_KERNEL);
e45cd82a 384
3d23e349 385#ifdef CONFIG_CFG80211_WEXT
e45cd82a
JB		 386 if (wextev) {
387 if (req_ie && status == WLAN_STATUS_SUCCESS) {
388 memset(&wrqu, 0, sizeof(wrqu));
389 wrqu.data.length = req_ie_len;
3409ff77 390 wireless_send_event(dev, IWEVASSOCREQIE, &wrqu, req_ie);
e45cd82a
JB		 391 }
392
393 if (resp_ie && status == WLAN_STATUS_SUCCESS) {
394 memset(&wrqu, 0, sizeof(wrqu));
395 wrqu.data.length = resp_ie_len;
396 wireless_send_event(dev, IWEVASSOCRESPIE, &wrqu, resp_ie);
397 }
398
399 memset(&wrqu, 0, sizeof(wrqu));
400 wrqu.ap_addr.sa_family = ARPHRD_ETHER;
f401a6f7 401 if (bssid && status == WLAN_STATUS_SUCCESS) {
e45cd82a 402 memcpy(wrqu.ap_addr.sa_data, bssid, ETH_ALEN);
f401a6f7
JB		 403 memcpy(wdev->wext.prev_bssid, bssid, ETH_ALEN);
404 wdev->wext.prev_bssid_valid = true;
405 }
e45cd82a
JB		 406 wireless_send_event(dev, SIOCGIWAP, &wrqu, NULL);
407 }
408#endif
409
df7fc0f9
JB		 410 if (wdev->current_bss) {
411 cfg80211_unhold_bss(wdev->current_bss);
412 cfg80211_put_bss(&wdev->current_bss->pub);
413 wdev->current_bss = NULL;
414 }
415
19957bb3
JB		 416 if (wdev->conn)
417 wdev->conn->state = CFG80211_CONN_IDLE;
418
fffd0934 419 if (status != WLAN_STATUS_SUCCESS) {
b23aa676 420 wdev->sme_state = CFG80211_SME_IDLE;
415ad1ef
DK		 421 if (wdev->conn)
422 kfree(wdev->conn->ie);
19957bb3
JB		 423 kfree(wdev->conn);
424 wdev->conn = NULL;
fffd0934
JB		 425 kfree(wdev->connect_keys);
426 wdev->connect_keys = NULL;
8dadadb7 427 wdev->ssid_len = 0;
fffd0934 428 return;
b23aa676 429 }
fffd0934 430
df7fc0f9
JB		 431 if (!bss)
432 bss = cfg80211_get_bss(wdev->wiphy, NULL, bssid,
433 wdev->ssid, wdev->ssid_len,
434 WLAN_CAPABILITY_ESS,
435 WLAN_CAPABILITY_ESS);
fffd0934
JB		 436
437 if (WARN_ON(!bss))
438 return;
439
440 cfg80211_hold_bss(bss_from_pub(bss));
441 wdev->current_bss = bss_from_pub(bss);
442
fffd0934
JB		 443 wdev->sme_state = CFG80211_SME_CONNECTED;
444 cfg80211_upload_connect_keys(wdev);
8b19e6ca
LR		 445
446 country_ie = (u8 *) ieee80211_bss_get_ie(bss, WLAN_EID_COUNTRY);
447
448 if (!country_ie)
449 return;
450
451 /*
452 * ieee80211_bss_get_ie() ensures we can access:
453 * - country_ie + 2, the start of the country ie data, and
454 * - and country_ie[1] which is the IE length
455 */
456 regulatory_hint_11d(wdev->wiphy,
84920e3e 457 bss->channel->band,
8b19e6ca
LR		 458 country_ie + 2,
459 country_ie[1]);
b23aa676 460}
f2129354
JB		 461
462void cfg80211_connect_result(struct net_device *dev, const u8 *bssid,
463 const u8 *req_ie, size_t req_ie_len,
464 const u8 *resp_ie, size_t resp_ie_len,
465 u16 status, gfp_t gfp)
466{
667503dd
JB		 467 struct wireless_dev *wdev = dev->ieee80211_ptr;
468 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
469 struct cfg80211_event *ev;
470 unsigned long flags;
471
f7969969
JB		 472 CFG80211_DEV_WARN_ON(wdev->sme_state != CFG80211_SME_CONNECTING);
473
667503dd
JB		 474 ev = kzalloc(sizeof(*ev) + req_ie_len + resp_ie_len, gfp);
475 if (!ev)
476 return;
477
478 ev->type = EVENT_CONNECT_RESULT;
16a832e7
ZY		 479 if (bssid)
480 memcpy(ev->cr.bssid, bssid, ETH_ALEN);
667503dd
JB		 481 ev->cr.req_ie = ((u8 *)ev) + sizeof(*ev);
482 ev->cr.req_ie_len = req_ie_len;
483 memcpy((void *)ev->cr.req_ie, req_ie, req_ie_len);
484 ev->cr.resp_ie = ((u8 *)ev) + sizeof(*ev) + req_ie_len;
485 ev->cr.resp_ie_len = resp_ie_len;
486 memcpy((void *)ev->cr.resp_ie, resp_ie, resp_ie_len);
487 ev->cr.status = status;
488
489 spin_lock_irqsave(&wdev->event_lock, flags);
490 list_add_tail(&ev->list, &wdev->event_list);
491 spin_unlock_irqrestore(&wdev->event_lock, flags);
e60d7443 492 queue_work(cfg80211_wq, &rdev->event_work);
f2129354 493}
b23aa676
SO		 494EXPORT_SYMBOL(cfg80211_connect_result);
495
667503dd
JB		 496void __cfg80211_roamed(struct wireless_dev *wdev, const u8 *bssid,
497 const u8 *req_ie, size_t req_ie_len,
498 const u8 *resp_ie, size_t resp_ie_len)
b23aa676 499{
b23aa676 500 struct cfg80211_bss *bss;
3d23e349 501#ifdef CONFIG_CFG80211_WEXT
b23aa676
SO		 502 union iwreq_data wrqu;
503#endif
504
667503dd
JB		 505 ASSERT_WDEV_LOCK(wdev);
506
b23aa676
SO		 507 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION))
508 return;
509
f7969969 510 if (wdev->sme_state != CFG80211_SME_CONNECTED)
b23aa676
SO		 511 return;
512
513 /* internal error -- how did we get to CONNECTED w/o BSS? */
514 if (WARN_ON(!wdev->current_bss)) {
515 return;
516 }
517
518 cfg80211_unhold_bss(wdev->current_bss);
19957bb3 519 cfg80211_put_bss(&wdev->current_bss->pub);
b23aa676
SO		 520 wdev->current_bss = NULL;
521
522 bss = cfg80211_get_bss(wdev->wiphy, NULL, bssid,
523 wdev->ssid, wdev->ssid_len,
524 WLAN_CAPABILITY_ESS, WLAN_CAPABILITY_ESS);
525
526 if (WARN_ON(!bss))
527 return;
528
19957bb3
JB		 529 cfg80211_hold_bss(bss_from_pub(bss));
530 wdev->current_bss = bss_from_pub(bss);
b23aa676 531
667503dd
JB		 532 nl80211_send_roamed(wiphy_to_dev(wdev->wiphy), wdev->netdev, bssid,
533 req_ie, req_ie_len, resp_ie, resp_ie_len,
534 GFP_KERNEL);
b23aa676 535
3d23e349 536#ifdef CONFIG_CFG80211_WEXT
b23aa676
SO		 537 if (req_ie) {
538 memset(&wrqu, 0, sizeof(wrqu));
539 wrqu.data.length = req_ie_len;
3409ff77 540 wireless_send_event(wdev->netdev, IWEVASSOCREQIE,
667503dd 541 &wrqu, req_ie);
b23aa676
SO		 542 }
543
544 if (resp_ie) {
545 memset(&wrqu, 0, sizeof(wrqu));
546 wrqu.data.length = resp_ie_len;
667503dd
JB		 547 wireless_send_event(wdev->netdev, IWEVASSOCRESPIE,
548 &wrqu, resp_ie);
b23aa676
SO		 549 }
550
551 memset(&wrqu, 0, sizeof(wrqu));
552 wrqu.ap_addr.sa_family = ARPHRD_ETHER;
553 memcpy(wrqu.ap_addr.sa_data, bssid, ETH_ALEN);
f401a6f7
JB		 554 memcpy(wdev->wext.prev_bssid, bssid, ETH_ALEN);
555 wdev->wext.prev_bssid_valid = true;
667503dd 556 wireless_send_event(wdev->netdev, SIOCGIWAP, &wrqu, NULL);
b23aa676
SO		 557#endif
558}
667503dd
JB		 559
560void cfg80211_roamed(struct net_device *dev, const u8 *bssid,
561 const u8 *req_ie, size_t req_ie_len,
562 const u8 *resp_ie, size_t resp_ie_len, gfp_t gfp)
563{
564 struct wireless_dev *wdev = dev->ieee80211_ptr;
565 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
566 struct cfg80211_event *ev;
567 unsigned long flags;
568
f7969969
JB		 569 CFG80211_DEV_WARN_ON(wdev->sme_state != CFG80211_SME_CONNECTED);
570
667503dd
JB		 571 ev = kzalloc(sizeof(*ev) + req_ie_len + resp_ie_len, gfp);
572 if (!ev)
573 return;
574
575 ev->type = EVENT_ROAMED;
576 memcpy(ev->rm.bssid, bssid, ETH_ALEN);
577 ev->rm.req_ie = ((u8 *)ev) + sizeof(*ev);
578 ev->rm.req_ie_len = req_ie_len;
579 memcpy((void *)ev->rm.req_ie, req_ie, req_ie_len);
580 ev->rm.resp_ie = ((u8 *)ev) + sizeof(*ev) + req_ie_len;
581 ev->rm.resp_ie_len = resp_ie_len;
582 memcpy((void *)ev->rm.resp_ie, resp_ie, resp_ie_len);
583
584 spin_lock_irqsave(&wdev->event_lock, flags);
585 list_add_tail(&ev->list, &wdev->event_list);
586 spin_unlock_irqrestore(&wdev->event_lock, flags);
e60d7443 587 queue_work(cfg80211_wq, &rdev->event_work);
667503dd 588}
b23aa676
SO		 589EXPORT_SYMBOL(cfg80211_roamed);
590
667503dd 591void __cfg80211_disconnected(struct net_device *dev, const u8 *ie,
6829c878 592 size_t ie_len, u16 reason, bool from_ap)
b23aa676
SO		 593{
594 struct wireless_dev *wdev = dev->ieee80211_ptr;
fffd0934
JB		 595 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
596 int i;
3d23e349 597#ifdef CONFIG_CFG80211_WEXT
b23aa676
SO		 598 union iwreq_data wrqu;
599#endif
600
667503dd
JB		 601 ASSERT_WDEV_LOCK(wdev);
602
b23aa676
SO		 603 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION))
604 return;
605
f7969969 606 if (wdev->sme_state != CFG80211_SME_CONNECTED)
b23aa676
SO		 607 return;
608
609 if (wdev->current_bss) {
610 cfg80211_unhold_bss(wdev->current_bss);
19957bb3 611 cfg80211_put_bss(&wdev->current_bss->pub);
b23aa676
SO		 612 }
613
614 wdev->current_bss = NULL;
615 wdev->sme_state = CFG80211_SME_IDLE;
8dadadb7 616 wdev->ssid_len = 0;
b23aa676 617
6829c878 618 if (wdev->conn) {
b6f0b639
JB		 619 const u8 *bssid;
620 int ret;
621
6829c878
JB		 622 kfree(wdev->conn->ie);
623 wdev->conn->ie = NULL;
19957bb3
JB		 624 kfree(wdev->conn);
625 wdev->conn = NULL;
b6f0b639
JB		 626
627 /*
628 * If this disconnect was due to a disassoc, we
629 * we might still have an auth BSS around. For
630 * the userspace SME that's currently expected,
631 * but for the kernel SME (nl80211 CONNECT or
632 * wireless extensions) we want to clear up all
633 * state.
634 */
635 for (i = 0; i < MAX_AUTH_BSSES; i++) {
636 if (!wdev->auth_bsses[i])
637 continue;
638 bssid = wdev->auth_bsses[i]->pub.bssid;
639 ret = __cfg80211_mlme_deauth(rdev, dev, bssid, NULL, 0,
640 WLAN_REASON_DEAUTH_LEAVING);
641 WARN(ret, "deauth failed: %d\n", ret);
642 }
6829c878
JB		 643 }
644
fffd0934
JB		 645 nl80211_send_disconnected(rdev, dev, reason, ie, ie_len, from_ap);
646
647 /*
648 * Delete all the keys ... pairwise keys can't really
649 * exist any more anyway, but default keys might.
650 */
651 if (rdev->ops->del_key)
652 for (i = 0; i < 6; i++)
653 rdev->ops->del_key(wdev->wiphy, dev, i, NULL);
b23aa676 654
3d23e349 655#ifdef CONFIG_CFG80211_WEXT
b23aa676
SO		 656 memset(&wrqu, 0, sizeof(wrqu));
657 wrqu.ap_addr.sa_family = ARPHRD_ETHER;
658 wireless_send_event(dev, SIOCGIWAP, &wrqu, NULL);
5f612033 659 wdev->wext.connect.ssid_len = 0;
b23aa676
SO		 660#endif
661}
662
663void cfg80211_disconnected(struct net_device *dev, u16 reason,
664 u8 *ie, size_t ie_len, gfp_t gfp)
665{
667503dd
JB		 666 struct wireless_dev *wdev = dev->ieee80211_ptr;
667 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
668 struct cfg80211_event *ev;
669 unsigned long flags;
670
f7969969
JB		 671 CFG80211_DEV_WARN_ON(wdev->sme_state != CFG80211_SME_CONNECTED);
672
667503dd
JB		 673 ev = kzalloc(sizeof(*ev) + ie_len, gfp);
674 if (!ev)
675 return;
676
677 ev->type = EVENT_DISCONNECTED;
678 ev->dc.ie = ((u8 *)ev) + sizeof(*ev);
679 ev->dc.ie_len = ie_len;
680 memcpy((void *)ev->dc.ie, ie, ie_len);
681 ev->dc.reason = reason;
682
683 spin_lock_irqsave(&wdev->event_lock, flags);
684 list_add_tail(&ev->list, &wdev->event_list);
685 spin_unlock_irqrestore(&wdev->event_lock, flags);
e60d7443 686 queue_work(cfg80211_wq, &rdev->event_work);
b23aa676
SO		 687}
688EXPORT_SYMBOL(cfg80211_disconnected);
689
667503dd
JB		 690int __cfg80211_connect(struct cfg80211_registered_device *rdev,
691 struct net_device *dev,
fffd0934 692 struct cfg80211_connect_params *connect,
f401a6f7
JB		 693 struct cfg80211_cached_keys *connkeys,
694 const u8 *prev_bssid)
b23aa676 695{
b23aa676 696 struct wireless_dev *wdev = dev->ieee80211_ptr;
59bbb6f7 697 struct ieee80211_channel *chan;
bbac31f4 698 struct cfg80211_bss *bss = NULL;
667503dd
JB		 699 int err;
700
701 ASSERT_WDEV_LOCK(wdev);
b23aa676
SO		 702
703 if (wdev->sme_state != CFG80211_SME_IDLE)
704 return -EALREADY;
705
59bbb6f7
JB		 706 chan = rdev_fixed_channel(rdev, wdev);
707 if (chan && chan != connect->channel)
708 return -EBUSY;
709
fffd0934
JB		 710 if (WARN_ON(wdev->connect_keys)) {
711 kfree(wdev->connect_keys);
712 wdev->connect_keys = NULL;
713 }
714
715 if (connkeys && connkeys->def >= 0) {
716 int idx;
bcba8eae 717 u32 cipher;
fffd0934
JB		 718
719 idx = connkeys->def;
bcba8eae 720 cipher = connkeys->params[idx].cipher;
fffd0934 721 /* If given a WEP key we may need it for shared key auth */
bcba8eae
SO		 722 if (cipher == WLAN_CIPHER_SUITE_WEP40 ||
723 cipher == WLAN_CIPHER_SUITE_WEP104) {
fffd0934
JB		 724 connect->key_idx = idx;
725 connect->key = connkeys->params[idx].key;
726 connect->key_len = connkeys->params[idx].key_len;
bcba8eae
SO		 727
728 /*
729 * If ciphers are not set (e.g. when going through
730 * iwconfig), we have to set them appropriately here.
731 */
732 if (connect->crypto.cipher_group == 0)
733 connect->crypto.cipher_group = cipher;
734
735 if (connect->crypto.n_ciphers_pairwise == 0) {
736 connect->crypto.n_ciphers_pairwise = 1;
737 connect->crypto.ciphers_pairwise[0] = cipher;
738 }
fffd0934
JB		 739 }
740 }
741
b23aa676 742 if (!rdev->ops->connect) {
6829c878
JB		 743 if (!rdev->ops->auth || !rdev->ops->assoc)
744 return -EOPNOTSUPP;
745
19957bb3
JB		 746 if (WARN_ON(wdev->conn))
747 return -EINPROGRESS;
748
749 wdev->conn = kzalloc(sizeof(*wdev->conn), GFP_KERNEL);
750 if (!wdev->conn)
751 return -ENOMEM;
6829c878
JB		 752
753 /*
754 * Copy all parameters, and treat explicitly IEs, BSSID, SSID.
755 */
756 memcpy(&wdev->conn->params, connect, sizeof(*connect));
757 if (connect->bssid) {
758 wdev->conn->params.bssid = wdev->conn->bssid;
759 memcpy(wdev->conn->bssid, connect->bssid, ETH_ALEN);
760 }
761
762 if (connect->ie) {
763 wdev->conn->ie = kmemdup(connect->ie, connect->ie_len,
764 GFP_KERNEL);
765 wdev->conn->params.ie = wdev->conn->ie;
19957bb3
JB		 766 if (!wdev->conn->ie) {
767 kfree(wdev->conn);
768 wdev->conn = NULL;
6829c878 769 return -ENOMEM;
19957bb3 770 }
6829c878
JB		 771 }
772
773 if (connect->auth_type == NL80211_AUTHTYPE_AUTOMATIC) {
774 wdev->conn->auto_auth = true;
775 /* start with open system ... should mostly work */
776 wdev->conn->params.auth_type =
777 NL80211_AUTHTYPE_OPEN_SYSTEM;
778 } else {
779 wdev->conn->auto_auth = false;
780 }
781
782 memcpy(wdev->ssid, connect->ssid, connect->ssid_len);
783 wdev->ssid_len = connect->ssid_len;
784 wdev->conn->params.ssid = wdev->ssid;
785 wdev->conn->params.ssid_len = connect->ssid_len;
786
8bb89485
JB		 787 /* see if we have the bss already */
788 bss = cfg80211_get_conn_bss(wdev);
6829c878
JB		 789
790 wdev->sme_state = CFG80211_SME_CONNECTING;
fffd0934 791 wdev->connect_keys = connkeys;
6829c878 792
f401a6f7
JB		 793 if (prev_bssid) {
794 memcpy(wdev->conn->prev_bssid, prev_bssid, ETH_ALEN);
795 wdev->conn->prev_bssid_valid = true;
796 }
797
bbac31f4
JB		 798 /* we're good if we have a matching bss struct */
799 if (bss) {
6829c878
JB		 800 wdev->conn->state = CFG80211_CONN_AUTHENTICATE_NEXT;
801 err = cfg80211_conn_do_work(wdev);
bbac31f4 802 cfg80211_put_bss(bss);
6829c878
JB		 803 } else {
804 /* otherwise we'll need to scan for the AP first */
805 err = cfg80211_conn_scan(wdev);
806 /*
807 * If we can't scan right now, then we need to scan again
808 * after the current scan finished, since the parameters
809 * changed (unless we find a good AP anyway).
810 */
811 if (err == -EBUSY) {
812 err = 0;
813 wdev->conn->state = CFG80211_CONN_SCAN_AGAIN;
814 }
815 }
19957bb3 816 if (err) {
415ad1ef 817 kfree(wdev->conn->ie);
19957bb3
JB		 818 kfree(wdev->conn);
819 wdev->conn = NULL;
6829c878 820 wdev->sme_state = CFG80211_SME_IDLE;
fffd0934 821 wdev->connect_keys = NULL;
8dadadb7 822 wdev->ssid_len = 0;
19957bb3 823 }
6829c878
JB		 824
825 return err;
b23aa676
SO		 826 } else {
827 wdev->sme_state = CFG80211_SME_CONNECTING;
fffd0934 828 wdev->connect_keys = connkeys;
b23aa676
SO		 829 err = rdev->ops->connect(&rdev->wiphy, dev, connect);
830 if (err) {
fffd0934 831 wdev->connect_keys = NULL;
b23aa676
SO		 832 wdev->sme_state = CFG80211_SME_IDLE;
833 return err;
834 }
b23aa676 835
6829c878
JB		 836 memcpy(wdev->ssid, connect->ssid, connect->ssid_len);
837 wdev->ssid_len = connect->ssid_len;
b23aa676 838
6829c878
JB		 839 return 0;
840 }
b23aa676
SO		 841}
842
667503dd
JB		 843int cfg80211_connect(struct cfg80211_registered_device *rdev,
844 struct net_device *dev,
fffd0934
JB		 845 struct cfg80211_connect_params *connect,
846 struct cfg80211_cached_keys *connkeys)
667503dd
JB		 847{
848 int err;
849
59bbb6f7 850 mutex_lock(&rdev->devlist_mtx);
667503dd 851 wdev_lock(dev->ieee80211_ptr);
f401a6f7 852 err = __cfg80211_connect(rdev, dev, connect, connkeys, NULL);
667503dd 853 wdev_unlock(dev->ieee80211_ptr);
59bbb6f7 854 mutex_unlock(&rdev->devlist_mtx);
667503dd
JB		 855
856 return err;
857}
858
859int __cfg80211_disconnect(struct cfg80211_registered_device *rdev,
860 struct net_device *dev, u16 reason, bool wextev)
b23aa676 861{
6829c878 862 struct wireless_dev *wdev = dev->ieee80211_ptr;
b23aa676
SO		 863 int err;
864
667503dd
JB		 865 ASSERT_WDEV_LOCK(wdev);
866
6829c878
JB		 867 if (wdev->sme_state == CFG80211_SME_IDLE)
868 return -EINVAL;
869
fffd0934
JB		 870 kfree(wdev->connect_keys);
871 wdev->connect_keys = NULL;
872
b23aa676 873 if (!rdev->ops->disconnect) {
19957bb3
JB		 874 if (!rdev->ops->deauth)
875 return -EOPNOTSUPP;
6829c878 876
19957bb3
JB		 877 /* was it connected by userspace SME? */
878 if (!wdev->conn) {
879 cfg80211_mlme_down(rdev, dev);
880 return 0;
881 }
6829c878
JB		 882
883 if (wdev->sme_state == CFG80211_SME_CONNECTING &&
884 (wdev->conn->state == CFG80211_CONN_SCANNING ||
885 wdev->conn->state == CFG80211_CONN_SCAN_AGAIN)) {
886 wdev->sme_state = CFG80211_SME_IDLE;
415ad1ef 887 kfree(wdev->conn->ie);
19957bb3
JB		 888 kfree(wdev->conn);
889 wdev->conn = NULL;
8dadadb7 890 wdev->ssid_len = 0;
6829c878
JB		 891 return 0;
892 }
893
6829c878 894 /* wdev->conn->params.bssid must be set if > SCANNING */
667503dd
JB		 895 err = __cfg80211_mlme_deauth(rdev, dev,
896 wdev->conn->params.bssid,
897 NULL, 0, reason);
6829c878
JB		 898 if (err)
899 return err;
b23aa676
SO		 900 } else {
901 err = rdev->ops->disconnect(&rdev->wiphy, dev, reason);
902 if (err)
903 return err;
904 }
905
6829c878 906 if (wdev->sme_state == CFG80211_SME_CONNECTED)
667503dd 907 __cfg80211_disconnected(dev, NULL, 0, 0, false);
6829c878 908 else if (wdev->sme_state == CFG80211_SME_CONNECTING)
f2129354
JB		 909 __cfg80211_connect_result(dev, NULL, NULL, 0, NULL, 0,
910 WLAN_STATUS_UNSPECIFIED_FAILURE,
df7fc0f9 911 wextev, NULL);
b23aa676
SO		 912
913 return 0;
914}
19957bb3 915
667503dd
JB		 916int cfg80211_disconnect(struct cfg80211_registered_device *rdev,
917 struct net_device *dev,
918 u16 reason, bool wextev)
919{
920 int err;
921
922 wdev_lock(dev->ieee80211_ptr);
923 err = __cfg80211_disconnect(rdev, dev, reason, wextev);
924 wdev_unlock(dev->ieee80211_ptr);
925
926 return err;
927}
928
19957bb3
JB		 929void cfg80211_sme_disassoc(struct net_device *dev, int idx)
930{
931 struct wireless_dev *wdev = dev->ieee80211_ptr;
932 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
933 u8 bssid[ETH_ALEN];
934
667503dd
JB		 935 ASSERT_WDEV_LOCK(wdev);
936
19957bb3
JB		 937 if (!wdev->conn)
938 return;
939
940 if (wdev->conn->state == CFG80211_CONN_IDLE)
941 return;
942
943 /*
944 * Ok, so the association was made by this SME -- we don't
945 * want it any more so deauthenticate too.
946 */
947
948 if (!wdev->auth_bsses[idx])
949 return;
950
951 memcpy(bssid, wdev->auth_bsses[idx]->pub.bssid, ETH_ALEN);
ec3f1490
JB		 952 if (__cfg80211_mlme_deauth(rdev, dev, bssid,
953 NULL, 0, WLAN_REASON_DEAUTH_LEAVING)) {
19957bb3
JB		 954 /* whatever -- assume gone anyway */
955 cfg80211_unhold_bss(wdev->auth_bsses[idx]);
956 cfg80211_put_bss(&wdev->auth_bsses[idx]->pub);
957 wdev->auth_bsses[idx] = NULL;
958 }
959}
kernel source for telekom puls (alcatel/mediatek)