Commit | Line | Data |
---|---|---|
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> | |
11 | #include <net/cfg80211.h> | |
12 | #include <net/rtnetlink.h> | |
13 | #include "nl80211.h" | |
14 | ||
6829c878 JB |
15 | struct cfg80211_conn { |
16 | struct cfg80211_connect_params params; | |
17 | /* these are sub-states of the _CONNECTING sme_state */ | |
18 | enum { | |
19 | CFG80211_CONN_IDLE, | |
20 | CFG80211_CONN_SCANNING, | |
21 | CFG80211_CONN_SCAN_AGAIN, | |
22 | CFG80211_CONN_AUTHENTICATE_NEXT, | |
23 | CFG80211_CONN_AUTHENTICATING, | |
24 | CFG80211_CONN_ASSOCIATE_NEXT, | |
25 | CFG80211_CONN_ASSOCIATING, | |
26 | } state; | |
27 | u8 bssid[ETH_ALEN]; | |
28 | u8 *ie; | |
29 | size_t ie_len; | |
30 | bool auto_auth; | |
31 | }; | |
32 | ||
33 | ||
34 | static int cfg80211_conn_scan(struct wireless_dev *wdev) | |
35 | { | |
36 | struct cfg80211_registered_device *drv = wiphy_to_dev(wdev->wiphy); | |
37 | struct cfg80211_scan_request *request; | |
38 | int n_channels, err; | |
39 | ||
40 | ASSERT_RTNL(); | |
41 | ||
42 | if (drv->scan_req) | |
43 | return -EBUSY; | |
44 | ||
45 | if (wdev->conn->params.channel) { | |
46 | n_channels = 1; | |
47 | } else { | |
48 | enum ieee80211_band band; | |
49 | n_channels = 0; | |
50 | ||
51 | for (band = 0; band < IEEE80211_NUM_BANDS; band++) { | |
52 | if (!wdev->wiphy->bands[band]) | |
53 | continue; | |
54 | n_channels += wdev->wiphy->bands[band]->n_channels; | |
55 | } | |
56 | } | |
57 | request = kzalloc(sizeof(*request) + sizeof(request->ssids[0]) + | |
58 | sizeof(request->channels[0]) * n_channels, | |
59 | GFP_KERNEL); | |
60 | if (!request) | |
61 | return -ENOMEM; | |
62 | ||
63 | request->channels = (void *)((char *)request + sizeof(*request)); | |
64 | if (wdev->conn->params.channel) | |
65 | request->channels[0] = wdev->conn->params.channel; | |
66 | else { | |
67 | int i = 0, j; | |
68 | enum ieee80211_band band; | |
69 | ||
70 | for (band = 0; band < IEEE80211_NUM_BANDS; band++) { | |
71 | if (!wdev->wiphy->bands[band]) | |
72 | continue; | |
73 | for (j = 0; j < wdev->wiphy->bands[band]->n_channels; | |
74 | i++, j++) | |
75 | request->channels[i] = | |
76 | &wdev->wiphy->bands[band]->channels[j]; | |
77 | } | |
78 | } | |
79 | request->n_channels = n_channels; | |
80 | request->ssids = (void *)(request->channels + n_channels); | |
81 | request->n_ssids = 1; | |
82 | ||
83 | memcpy(request->ssids[0].ssid, wdev->conn->params.ssid, | |
84 | wdev->conn->params.ssid_len); | |
85 | request->ssids[0].ssid_len = wdev->conn->params.ssid_len; | |
86 | ||
87 | request->ifidx = wdev->netdev->ifindex; | |
88 | request->wiphy = &drv->wiphy; | |
89 | ||
90 | drv->scan_req = request; | |
91 | ||
92 | err = drv->ops->scan(wdev->wiphy, wdev->netdev, request); | |
93 | if (!err) { | |
94 | wdev->conn->state = CFG80211_CONN_SCANNING; | |
95 | nl80211_send_scan_start(drv, wdev->netdev); | |
96 | } else { | |
97 | drv->scan_req = NULL; | |
98 | kfree(request); | |
99 | } | |
100 | return err; | |
101 | } | |
102 | ||
103 | static int cfg80211_conn_do_work(struct wireless_dev *wdev) | |
104 | { | |
105 | struct cfg80211_registered_device *drv = wiphy_to_dev(wdev->wiphy); | |
106 | union { | |
107 | struct cfg80211_auth_request auth_req; | |
108 | struct cfg80211_assoc_request assoc_req; | |
109 | } u; | |
110 | ||
111 | memset(&u, 0, sizeof(u)); | |
112 | ||
113 | if (!wdev->conn) | |
114 | return 0; | |
115 | ||
116 | switch (wdev->conn->state) { | |
117 | case CFG80211_CONN_SCAN_AGAIN: | |
118 | return cfg80211_conn_scan(wdev); | |
119 | case CFG80211_CONN_AUTHENTICATE_NEXT: | |
120 | u.auth_req.chan = wdev->conn->params.channel; | |
121 | u.auth_req.peer_addr = wdev->conn->params.bssid; | |
122 | u.auth_req.ssid = wdev->conn->params.ssid; | |
123 | u.auth_req.ssid_len = wdev->conn->params.ssid_len; | |
124 | u.auth_req.auth_type = wdev->conn->params.auth_type; | |
125 | u.auth_req.ie = NULL; | |
126 | u.auth_req.ie_len = 0; | |
127 | wdev->conn->state = CFG80211_CONN_AUTHENTICATING; | |
128 | BUG_ON(!drv->ops->auth); | |
129 | return drv->ops->auth(wdev->wiphy, wdev->netdev, &u.auth_req); | |
130 | case CFG80211_CONN_ASSOCIATE_NEXT: | |
131 | u.assoc_req.chan = wdev->conn->params.channel; | |
132 | u.assoc_req.peer_addr = wdev->conn->params.bssid; | |
133 | u.assoc_req.ssid = wdev->conn->params.ssid; | |
134 | u.assoc_req.ssid_len = wdev->conn->params.ssid_len; | |
135 | u.assoc_req.ie = wdev->conn->params.ie; | |
136 | u.assoc_req.ie_len = wdev->conn->params.ie_len; | |
137 | u.assoc_req.use_mfp = false; | |
138 | memcpy(&u.assoc_req.crypto, &wdev->conn->params.crypto, | |
139 | sizeof(u.assoc_req.crypto)); | |
140 | wdev->conn->state = CFG80211_CONN_ASSOCIATING; | |
141 | BUG_ON(!drv->ops->assoc); | |
142 | return drv->ops->assoc(wdev->wiphy, wdev->netdev, | |
143 | &u.assoc_req); | |
144 | default: | |
145 | return 0; | |
146 | } | |
147 | } | |
148 | ||
149 | void cfg80211_conn_work(struct work_struct *work) | |
150 | { | |
151 | struct cfg80211_registered_device *drv = | |
152 | container_of(work, struct cfg80211_registered_device, conn_work); | |
153 | struct wireless_dev *wdev; | |
154 | ||
155 | rtnl_lock(); | |
156 | mutex_lock(&drv->devlist_mtx); | |
157 | ||
158 | list_for_each_entry(wdev, &drv->netdev_list, list) { | |
159 | if (!netif_running(wdev->netdev)) | |
160 | continue; | |
161 | if (wdev->sme_state != CFG80211_SME_CONNECTING) | |
162 | continue; | |
163 | if (cfg80211_conn_do_work(wdev)) | |
164 | cfg80211_connect_result(wdev->netdev, | |
165 | wdev->conn->params.bssid, | |
166 | NULL, 0, NULL, 0, | |
167 | WLAN_STATUS_UNSPECIFIED_FAILURE, | |
168 | GFP_ATOMIC); | |
169 | } | |
170 | ||
171 | mutex_unlock(&drv->devlist_mtx); | |
172 | rtnl_unlock(); | |
173 | } | |
174 | ||
175 | static bool cfg80211_get_conn_bss(struct wireless_dev *wdev) | |
176 | { | |
177 | struct cfg80211_registered_device *drv = wiphy_to_dev(wdev->wiphy); | |
178 | struct cfg80211_bss *bss; | |
179 | u16 capa = WLAN_CAPABILITY_ESS; | |
180 | ||
181 | if (wdev->conn->params.privacy) | |
182 | capa |= WLAN_CAPABILITY_PRIVACY; | |
183 | ||
184 | bss = cfg80211_get_bss(wdev->wiphy, NULL, wdev->conn->params.bssid, | |
185 | wdev->conn->params.ssid, | |
186 | wdev->conn->params.ssid_len, | |
187 | WLAN_CAPABILITY_ESS | WLAN_CAPABILITY_PRIVACY, | |
188 | capa); | |
189 | ||
190 | if (!bss) | |
191 | return false; | |
192 | ||
193 | memcpy(wdev->conn->bssid, bss->bssid, ETH_ALEN); | |
194 | wdev->conn->params.bssid = wdev->conn->bssid; | |
195 | wdev->conn->params.channel = bss->channel; | |
196 | wdev->conn->state = CFG80211_CONN_AUTHENTICATE_NEXT; | |
197 | schedule_work(&drv->conn_work); | |
198 | ||
199 | cfg80211_put_bss(bss); | |
200 | return true; | |
201 | } | |
202 | ||
203 | void cfg80211_sme_scan_done(struct net_device *dev) | |
204 | { | |
205 | struct wireless_dev *wdev = dev->ieee80211_ptr; | |
206 | struct cfg80211_registered_device *drv = wiphy_to_dev(wdev->wiphy); | |
207 | ||
208 | if (wdev->sme_state != CFG80211_SME_CONNECTING) | |
209 | return; | |
210 | ||
211 | if (WARN_ON(!wdev->conn)) | |
212 | return; | |
213 | ||
214 | if (wdev->conn->state != CFG80211_CONN_SCANNING && | |
215 | wdev->conn->state != CFG80211_CONN_SCAN_AGAIN) | |
216 | return; | |
217 | ||
218 | if (!cfg80211_get_conn_bss(wdev)) { | |
219 | /* not found */ | |
220 | if (wdev->conn->state == CFG80211_CONN_SCAN_AGAIN) | |
221 | schedule_work(&drv->conn_work); | |
222 | else | |
223 | cfg80211_connect_result(dev, wdev->conn->params.bssid, | |
224 | NULL, 0, NULL, 0, | |
225 | WLAN_STATUS_UNSPECIFIED_FAILURE, | |
226 | GFP_ATOMIC); | |
227 | return; | |
228 | } | |
229 | } | |
230 | ||
231 | void cfg80211_sme_rx_auth(struct net_device *dev, const u8 *buf, size_t len) | |
232 | { | |
233 | struct wireless_dev *wdev = dev->ieee80211_ptr; | |
234 | struct wiphy *wiphy = wdev->wiphy; | |
235 | struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); | |
236 | struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)buf; | |
237 | u16 status_code = le16_to_cpu(mgmt->u.auth.status_code); | |
238 | ||
239 | /* should only RX auth frames when connecting */ | |
240 | if (wdev->sme_state != CFG80211_SME_CONNECTING) | |
241 | return; | |
242 | ||
243 | if (WARN_ON(!wdev->conn)) | |
244 | return; | |
245 | ||
246 | if (status_code == WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG && | |
247 | wdev->conn->auto_auth && | |
248 | wdev->conn->params.auth_type != NL80211_AUTHTYPE_NETWORK_EAP) { | |
249 | /* select automatically between only open, shared, leap */ | |
250 | switch (wdev->conn->params.auth_type) { | |
251 | case NL80211_AUTHTYPE_OPEN_SYSTEM: | |
252 | wdev->conn->params.auth_type = | |
253 | NL80211_AUTHTYPE_SHARED_KEY; | |
254 | break; | |
255 | case NL80211_AUTHTYPE_SHARED_KEY: | |
256 | wdev->conn->params.auth_type = | |
257 | NL80211_AUTHTYPE_NETWORK_EAP; | |
258 | break; | |
259 | default: | |
260 | /* huh? */ | |
261 | wdev->conn->params.auth_type = | |
262 | NL80211_AUTHTYPE_OPEN_SYSTEM; | |
263 | break; | |
264 | } | |
265 | wdev->conn->state = CFG80211_CONN_AUTHENTICATE_NEXT; | |
266 | schedule_work(&rdev->conn_work); | |
267 | } else if (status_code != WLAN_STATUS_SUCCESS) | |
268 | wdev->sme_state = CFG80211_SME_IDLE; | |
269 | else if (wdev->sme_state == CFG80211_SME_CONNECTING && | |
270 | wdev->conn->state == CFG80211_CONN_AUTHENTICATING) { | |
271 | wdev->conn->state = CFG80211_CONN_ASSOCIATE_NEXT; | |
272 | schedule_work(&rdev->conn_work); | |
273 | } | |
274 | } | |
b23aa676 SO |
275 | |
276 | void cfg80211_connect_result(struct net_device *dev, const u8 *bssid, | |
277 | const u8 *req_ie, size_t req_ie_len, | |
278 | const u8 *resp_ie, size_t resp_ie_len, | |
279 | u16 status, gfp_t gfp) | |
280 | { | |
281 | struct wireless_dev *wdev = dev->ieee80211_ptr; | |
282 | struct cfg80211_bss *bss; | |
283 | #ifdef CONFIG_WIRELESS_EXT | |
284 | union iwreq_data wrqu; | |
285 | #endif | |
286 | ||
287 | if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION)) | |
288 | return; | |
289 | ||
6829c878 | 290 | if (wdev->sme_state != CFG80211_SME_CONNECTING) |
b23aa676 SO |
291 | return; |
292 | ||
293 | if (wdev->current_bss) { | |
294 | cfg80211_unhold_bss(wdev->current_bss); | |
295 | cfg80211_put_bss(wdev->current_bss); | |
296 | wdev->current_bss = NULL; | |
297 | } | |
298 | ||
299 | if (status == WLAN_STATUS_SUCCESS) { | |
300 | bss = cfg80211_get_bss(wdev->wiphy, NULL, bssid, | |
301 | wdev->ssid, wdev->ssid_len, | |
302 | WLAN_CAPABILITY_ESS, | |
303 | WLAN_CAPABILITY_ESS); | |
304 | ||
305 | if (WARN_ON(!bss)) | |
306 | return; | |
307 | ||
308 | cfg80211_hold_bss(bss); | |
309 | wdev->current_bss = bss; | |
310 | ||
311 | wdev->sme_state = CFG80211_SME_CONNECTED; | |
312 | } else { | |
313 | wdev->sme_state = CFG80211_SME_IDLE; | |
314 | } | |
315 | ||
6829c878 JB |
316 | if (wdev->conn) |
317 | wdev->conn->state = CFG80211_CONN_IDLE; | |
318 | ||
b23aa676 SO |
319 | nl80211_send_connect_result(wiphy_to_dev(wdev->wiphy), dev, bssid, |
320 | req_ie, req_ie_len, resp_ie, resp_ie_len, | |
321 | status, gfp); | |
322 | ||
323 | #ifdef CONFIG_WIRELESS_EXT | |
324 | if (req_ie && status == WLAN_STATUS_SUCCESS) { | |
325 | memset(&wrqu, 0, sizeof(wrqu)); | |
326 | wrqu.data.length = req_ie_len; | |
327 | wireless_send_event(dev, IWEVASSOCRESPIE, &wrqu, req_ie); | |
328 | } | |
329 | ||
330 | if (resp_ie && status == WLAN_STATUS_SUCCESS) { | |
331 | memset(&wrqu, 0, sizeof(wrqu)); | |
332 | wrqu.data.length = resp_ie_len; | |
333 | wireless_send_event(dev, IWEVASSOCRESPIE, &wrqu, resp_ie); | |
334 | } | |
335 | ||
336 | memset(&wrqu, 0, sizeof(wrqu)); | |
337 | wrqu.ap_addr.sa_family = ARPHRD_ETHER; | |
6829c878 | 338 | if (bssid && status == WLAN_STATUS_SUCCESS) |
b23aa676 SO |
339 | memcpy(wrqu.ap_addr.sa_data, bssid, ETH_ALEN); |
340 | wireless_send_event(dev, SIOCGIWAP, &wrqu, NULL); | |
341 | #endif | |
342 | } | |
343 | EXPORT_SYMBOL(cfg80211_connect_result); | |
344 | ||
345 | void cfg80211_roamed(struct net_device *dev, const u8 *bssid, | |
346 | const u8 *req_ie, size_t req_ie_len, | |
347 | const u8 *resp_ie, size_t resp_ie_len, gfp_t gfp) | |
348 | { | |
349 | struct wireless_dev *wdev = dev->ieee80211_ptr; | |
350 | struct cfg80211_bss *bss; | |
351 | #ifdef CONFIG_WIRELESS_EXT | |
352 | union iwreq_data wrqu; | |
353 | #endif | |
354 | ||
355 | if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION)) | |
356 | return; | |
357 | ||
358 | if (WARN_ON(wdev->sme_state != CFG80211_SME_CONNECTED)) | |
359 | return; | |
360 | ||
361 | /* internal error -- how did we get to CONNECTED w/o BSS? */ | |
362 | if (WARN_ON(!wdev->current_bss)) { | |
363 | return; | |
364 | } | |
365 | ||
366 | cfg80211_unhold_bss(wdev->current_bss); | |
367 | cfg80211_put_bss(wdev->current_bss); | |
368 | wdev->current_bss = NULL; | |
369 | ||
370 | bss = cfg80211_get_bss(wdev->wiphy, NULL, bssid, | |
371 | wdev->ssid, wdev->ssid_len, | |
372 | WLAN_CAPABILITY_ESS, WLAN_CAPABILITY_ESS); | |
373 | ||
374 | if (WARN_ON(!bss)) | |
375 | return; | |
376 | ||
377 | cfg80211_hold_bss(bss); | |
378 | wdev->current_bss = bss; | |
379 | ||
380 | nl80211_send_roamed(wiphy_to_dev(wdev->wiphy), dev, bssid, | |
381 | req_ie, req_ie_len, resp_ie, resp_ie_len, gfp); | |
382 | ||
383 | #ifdef CONFIG_WIRELESS_EXT | |
384 | if (req_ie) { | |
385 | memset(&wrqu, 0, sizeof(wrqu)); | |
386 | wrqu.data.length = req_ie_len; | |
387 | wireless_send_event(dev, IWEVASSOCRESPIE, &wrqu, req_ie); | |
388 | } | |
389 | ||
390 | if (resp_ie) { | |
391 | memset(&wrqu, 0, sizeof(wrqu)); | |
392 | wrqu.data.length = resp_ie_len; | |
393 | wireless_send_event(dev, IWEVASSOCRESPIE, &wrqu, resp_ie); | |
394 | } | |
395 | ||
396 | memset(&wrqu, 0, sizeof(wrqu)); | |
397 | wrqu.ap_addr.sa_family = ARPHRD_ETHER; | |
398 | memcpy(wrqu.ap_addr.sa_data, bssid, ETH_ALEN); | |
399 | wireless_send_event(dev, SIOCGIWAP, &wrqu, NULL); | |
400 | #endif | |
401 | } | |
402 | EXPORT_SYMBOL(cfg80211_roamed); | |
403 | ||
6829c878 JB |
404 | void __cfg80211_disconnected(struct net_device *dev, gfp_t gfp, u8 *ie, |
405 | size_t ie_len, u16 reason, bool from_ap) | |
b23aa676 SO |
406 | { |
407 | struct wireless_dev *wdev = dev->ieee80211_ptr; | |
408 | #ifdef CONFIG_WIRELESS_EXT | |
409 | union iwreq_data wrqu; | |
410 | #endif | |
411 | ||
412 | if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION)) | |
413 | return; | |
414 | ||
415 | if (WARN_ON(wdev->sme_state != CFG80211_SME_CONNECTED)) | |
416 | return; | |
417 | ||
418 | if (wdev->current_bss) { | |
419 | cfg80211_unhold_bss(wdev->current_bss); | |
420 | cfg80211_put_bss(wdev->current_bss); | |
421 | } | |
422 | ||
423 | wdev->current_bss = NULL; | |
424 | wdev->sme_state = CFG80211_SME_IDLE; | |
425 | ||
6829c878 JB |
426 | if (wdev->conn) { |
427 | kfree(wdev->conn->ie); | |
428 | wdev->conn->ie = NULL; | |
429 | } | |
430 | ||
b23aa676 SO |
431 | nl80211_send_disconnected(wiphy_to_dev(wdev->wiphy), dev, |
432 | reason, ie, ie_len, from_ap, gfp); | |
433 | ||
434 | #ifdef CONFIG_WIRELESS_EXT | |
435 | memset(&wrqu, 0, sizeof(wrqu)); | |
436 | wrqu.ap_addr.sa_family = ARPHRD_ETHER; | |
437 | wireless_send_event(dev, SIOCGIWAP, &wrqu, NULL); | |
438 | #endif | |
439 | } | |
440 | ||
441 | void cfg80211_disconnected(struct net_device *dev, u16 reason, | |
442 | u8 *ie, size_t ie_len, gfp_t gfp) | |
443 | { | |
6829c878 | 444 | __cfg80211_disconnected(dev, gfp, ie, ie_len, reason, true); |
b23aa676 SO |
445 | } |
446 | EXPORT_SYMBOL(cfg80211_disconnected); | |
447 | ||
448 | int cfg80211_connect(struct cfg80211_registered_device *rdev, | |
449 | struct net_device *dev, | |
450 | struct cfg80211_connect_params *connect) | |
451 | { | |
452 | int err; | |
453 | struct wireless_dev *wdev = dev->ieee80211_ptr; | |
454 | ||
455 | if (wdev->sme_state != CFG80211_SME_IDLE) | |
456 | return -EALREADY; | |
457 | ||
458 | if (!rdev->ops->connect) { | |
6829c878 JB |
459 | if (!rdev->ops->auth || !rdev->ops->assoc) |
460 | return -EOPNOTSUPP; | |
461 | ||
462 | if (!wdev->conn) { | |
463 | wdev->conn = kzalloc(sizeof(*wdev->conn), GFP_KERNEL); | |
464 | if (!wdev->conn) | |
465 | return -ENOMEM; | |
466 | } else | |
467 | memset(wdev->conn, 0, sizeof(*wdev->conn)); | |
468 | ||
469 | /* | |
470 | * Copy all parameters, and treat explicitly IEs, BSSID, SSID. | |
471 | */ | |
472 | memcpy(&wdev->conn->params, connect, sizeof(*connect)); | |
473 | if (connect->bssid) { | |
474 | wdev->conn->params.bssid = wdev->conn->bssid; | |
475 | memcpy(wdev->conn->bssid, connect->bssid, ETH_ALEN); | |
476 | } | |
477 | ||
478 | if (connect->ie) { | |
479 | wdev->conn->ie = kmemdup(connect->ie, connect->ie_len, | |
480 | GFP_KERNEL); | |
481 | wdev->conn->params.ie = wdev->conn->ie; | |
482 | if (!wdev->conn->ie) | |
483 | return -ENOMEM; | |
484 | } | |
485 | ||
486 | if (connect->auth_type == NL80211_AUTHTYPE_AUTOMATIC) { | |
487 | wdev->conn->auto_auth = true; | |
488 | /* start with open system ... should mostly work */ | |
489 | wdev->conn->params.auth_type = | |
490 | NL80211_AUTHTYPE_OPEN_SYSTEM; | |
491 | } else { | |
492 | wdev->conn->auto_auth = false; | |
493 | } | |
494 | ||
495 | memcpy(wdev->ssid, connect->ssid, connect->ssid_len); | |
496 | wdev->ssid_len = connect->ssid_len; | |
497 | wdev->conn->params.ssid = wdev->ssid; | |
498 | wdev->conn->params.ssid_len = connect->ssid_len; | |
499 | ||
500 | /* don't care about result -- but fill bssid & channel */ | |
501 | if (!wdev->conn->params.bssid || !wdev->conn->params.channel) | |
502 | cfg80211_get_conn_bss(wdev); | |
503 | ||
504 | wdev->sme_state = CFG80211_SME_CONNECTING; | |
505 | ||
506 | /* we're good if we have both BSSID and channel */ | |
507 | if (wdev->conn->params.bssid && wdev->conn->params.channel) { | |
508 | wdev->conn->state = CFG80211_CONN_AUTHENTICATE_NEXT; | |
509 | err = cfg80211_conn_do_work(wdev); | |
510 | } else { | |
511 | /* otherwise we'll need to scan for the AP first */ | |
512 | err = cfg80211_conn_scan(wdev); | |
513 | /* | |
514 | * If we can't scan right now, then we need to scan again | |
515 | * after the current scan finished, since the parameters | |
516 | * changed (unless we find a good AP anyway). | |
517 | */ | |
518 | if (err == -EBUSY) { | |
519 | err = 0; | |
520 | wdev->conn->state = CFG80211_CONN_SCAN_AGAIN; | |
521 | } | |
522 | } | |
523 | if (err) | |
524 | wdev->sme_state = CFG80211_SME_IDLE; | |
525 | ||
526 | return err; | |
b23aa676 SO |
527 | } else { |
528 | wdev->sme_state = CFG80211_SME_CONNECTING; | |
529 | err = rdev->ops->connect(&rdev->wiphy, dev, connect); | |
530 | if (err) { | |
531 | wdev->sme_state = CFG80211_SME_IDLE; | |
532 | return err; | |
533 | } | |
b23aa676 | 534 | |
6829c878 JB |
535 | memcpy(wdev->ssid, connect->ssid, connect->ssid_len); |
536 | wdev->ssid_len = connect->ssid_len; | |
b23aa676 | 537 | |
6829c878 JB |
538 | return 0; |
539 | } | |
b23aa676 SO |
540 | } |
541 | ||
542 | int cfg80211_disconnect(struct cfg80211_registered_device *rdev, | |
543 | struct net_device *dev, u16 reason) | |
544 | { | |
6829c878 | 545 | struct wireless_dev *wdev = dev->ieee80211_ptr; |
b23aa676 SO |
546 | int err; |
547 | ||
6829c878 JB |
548 | if (wdev->sme_state == CFG80211_SME_IDLE) |
549 | return -EINVAL; | |
550 | ||
b23aa676 | 551 | if (!rdev->ops->disconnect) { |
6829c878 JB |
552 | struct cfg80211_deauth_request deauth; |
553 | u8 bssid[ETH_ALEN]; | |
554 | ||
555 | /* internal bug. */ | |
556 | if (WARN_ON(!wdev->conn)) | |
557 | return -EINVAL; | |
558 | ||
559 | if (wdev->sme_state == CFG80211_SME_CONNECTING && | |
560 | (wdev->conn->state == CFG80211_CONN_SCANNING || | |
561 | wdev->conn->state == CFG80211_CONN_SCAN_AGAIN)) { | |
562 | wdev->sme_state = CFG80211_SME_IDLE; | |
563 | return 0; | |
564 | } | |
565 | ||
566 | if (!rdev->ops->deauth) | |
567 | return -EOPNOTSUPP; | |
568 | ||
569 | memset(&deauth, 0, sizeof(deauth)); | |
570 | ||
571 | /* wdev->conn->params.bssid must be set if > SCANNING */ | |
572 | memcpy(bssid, wdev->conn->params.bssid, ETH_ALEN); | |
573 | deauth.peer_addr = bssid; | |
574 | deauth.reason_code = reason; | |
575 | ||
576 | err = rdev->ops->deauth(&rdev->wiphy, dev, &deauth); | |
577 | if (err) | |
578 | return err; | |
b23aa676 SO |
579 | } else { |
580 | err = rdev->ops->disconnect(&rdev->wiphy, dev, reason); | |
581 | if (err) | |
582 | return err; | |
583 | } | |
584 | ||
6829c878 JB |
585 | if (wdev->sme_state == CFG80211_SME_CONNECTED) |
586 | __cfg80211_disconnected(dev, GFP_KERNEL, NULL, 0, 0, false); | |
587 | else if (wdev->sme_state == CFG80211_SME_CONNECTING) | |
588 | cfg80211_connect_result(dev, NULL, NULL, 0, NULL, 0, | |
589 | WLAN_STATUS_UNSPECIFIED_FAILURE, | |
590 | GFP_KERNEL); | |
b23aa676 SO |
591 | |
592 | return 0; | |
593 | } |