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Commit | Line | Data |
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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" | |
16 | ||
6829c878 JB |
17 | struct cfg80211_conn { |
18 | struct cfg80211_connect_params params; | |
19 | /* these are sub-states of the _CONNECTING sme_state */ | |
20 | enum { | |
21 | CFG80211_CONN_IDLE, | |
22 | CFG80211_CONN_SCANNING, | |
23 | CFG80211_CONN_SCAN_AGAIN, | |
24 | CFG80211_CONN_AUTHENTICATE_NEXT, | |
25 | CFG80211_CONN_AUTHENTICATING, | |
26 | CFG80211_CONN_ASSOCIATE_NEXT, | |
27 | CFG80211_CONN_ASSOCIATING, | |
28 | } state; | |
29 | u8 bssid[ETH_ALEN]; | |
30 | u8 *ie; | |
31 | size_t ie_len; | |
32 | bool auto_auth; | |
33 | }; | |
34 | ||
35 | ||
36 | static int cfg80211_conn_scan(struct wireless_dev *wdev) | |
37 | { | |
79c97e97 | 38 | struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy); |
6829c878 JB |
39 | struct cfg80211_scan_request *request; |
40 | int n_channels, err; | |
41 | ||
42 | ASSERT_RTNL(); | |
79c97e97 | 43 | ASSERT_RDEV_LOCK(rdev); |
667503dd | 44 | ASSERT_WDEV_LOCK(wdev); |
6829c878 | 45 | |
79c97e97 | 46 | if (rdev->scan_req) |
6829c878 JB |
47 | return -EBUSY; |
48 | ||
49 | if (wdev->conn->params.channel) { | |
50 | n_channels = 1; | |
51 | } else { | |
52 | enum ieee80211_band band; | |
53 | n_channels = 0; | |
54 | ||
55 | for (band = 0; band < IEEE80211_NUM_BANDS; band++) { | |
56 | if (!wdev->wiphy->bands[band]) | |
57 | continue; | |
58 | n_channels += wdev->wiphy->bands[band]->n_channels; | |
59 | } | |
60 | } | |
61 | request = kzalloc(sizeof(*request) + sizeof(request->ssids[0]) + | |
62 | sizeof(request->channels[0]) * n_channels, | |
63 | GFP_KERNEL); | |
64 | if (!request) | |
65 | return -ENOMEM; | |
66 | ||
67 | request->channels = (void *)((char *)request + sizeof(*request)); | |
68 | if (wdev->conn->params.channel) | |
69 | request->channels[0] = wdev->conn->params.channel; | |
70 | else { | |
71 | int i = 0, j; | |
72 | enum ieee80211_band band; | |
73 | ||
74 | for (band = 0; band < IEEE80211_NUM_BANDS; band++) { | |
75 | if (!wdev->wiphy->bands[band]) | |
76 | continue; | |
77 | for (j = 0; j < wdev->wiphy->bands[band]->n_channels; | |
78 | i++, j++) | |
79 | request->channels[i] = | |
80 | &wdev->wiphy->bands[band]->channels[j]; | |
81 | } | |
82 | } | |
83 | request->n_channels = n_channels; | |
84 | request->ssids = (void *)(request->channels + n_channels); | |
85 | request->n_ssids = 1; | |
86 | ||
87 | memcpy(request->ssids[0].ssid, wdev->conn->params.ssid, | |
88 | wdev->conn->params.ssid_len); | |
89 | request->ssids[0].ssid_len = wdev->conn->params.ssid_len; | |
90 | ||
463d0183 | 91 | request->dev = wdev->netdev; |
79c97e97 | 92 | request->wiphy = &rdev->wiphy; |
6829c878 | 93 | |
79c97e97 | 94 | rdev->scan_req = request; |
6829c878 | 95 | |
79c97e97 | 96 | err = rdev->ops->scan(wdev->wiphy, wdev->netdev, request); |
6829c878 JB |
97 | if (!err) { |
98 | wdev->conn->state = CFG80211_CONN_SCANNING; | |
79c97e97 | 99 | nl80211_send_scan_start(rdev, wdev->netdev); |
463d0183 | 100 | dev_hold(wdev->netdev); |
6829c878 | 101 | } else { |
79c97e97 | 102 | rdev->scan_req = NULL; |
6829c878 JB |
103 | kfree(request); |
104 | } | |
105 | return err; | |
106 | } | |
107 | ||
108 | static int cfg80211_conn_do_work(struct wireless_dev *wdev) | |
109 | { | |
79c97e97 | 110 | struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy); |
19957bb3 JB |
111 | struct cfg80211_connect_params *params; |
112 | int err; | |
6829c878 | 113 | |
667503dd JB |
114 | ASSERT_WDEV_LOCK(wdev); |
115 | ||
6829c878 JB |
116 | if (!wdev->conn) |
117 | return 0; | |
118 | ||
19957bb3 JB |
119 | params = &wdev->conn->params; |
120 | ||
6829c878 JB |
121 | switch (wdev->conn->state) { |
122 | case CFG80211_CONN_SCAN_AGAIN: | |
123 | return cfg80211_conn_scan(wdev); | |
124 | case CFG80211_CONN_AUTHENTICATE_NEXT: | |
79c97e97 | 125 | BUG_ON(!rdev->ops->auth); |
19957bb3 | 126 | wdev->conn->state = CFG80211_CONN_AUTHENTICATING; |
79c97e97 | 127 | return __cfg80211_mlme_auth(rdev, wdev->netdev, |
667503dd JB |
128 | params->channel, params->auth_type, |
129 | params->bssid, | |
130 | params->ssid, params->ssid_len, | |
fffd0934 JB |
131 | NULL, 0, |
132 | params->key, params->key_len, | |
133 | params->key_idx); | |
6829c878 | 134 | case CFG80211_CONN_ASSOCIATE_NEXT: |
79c97e97 | 135 | BUG_ON(!rdev->ops->assoc); |
19957bb3 | 136 | wdev->conn->state = CFG80211_CONN_ASSOCIATING; |
3e5d7649 JB |
137 | /* |
138 | * We could, later, implement roaming here and then actually | |
139 | * set prev_bssid to non-NULL. But then we need to be aware | |
140 | * that some APs don't like that -- so we'd need to retry | |
141 | * the association. | |
142 | */ | |
79c97e97 | 143 | err = __cfg80211_mlme_assoc(rdev, wdev->netdev, |
667503dd JB |
144 | params->channel, params->bssid, |
145 | NULL, | |
146 | params->ssid, params->ssid_len, | |
147 | params->ie, params->ie_len, | |
148 | false, ¶ms->crypto); | |
19957bb3 | 149 | if (err) |
79c97e97 | 150 | __cfg80211_mlme_deauth(rdev, wdev->netdev, params->bssid, |
667503dd JB |
151 | NULL, 0, |
152 | WLAN_REASON_DEAUTH_LEAVING); | |
19957bb3 | 153 | return err; |
6829c878 JB |
154 | default: |
155 | return 0; | |
156 | } | |
157 | } | |
158 | ||
159 | void cfg80211_conn_work(struct work_struct *work) | |
160 | { | |
79c97e97 | 161 | struct cfg80211_registered_device *rdev = |
6829c878 JB |
162 | container_of(work, struct cfg80211_registered_device, conn_work); |
163 | struct wireless_dev *wdev; | |
164 | ||
165 | rtnl_lock(); | |
79c97e97 JB |
166 | cfg80211_lock_rdev(rdev); |
167 | mutex_lock(&rdev->devlist_mtx); | |
6829c878 | 168 | |
79c97e97 | 169 | list_for_each_entry(wdev, &rdev->netdev_list, list) { |
667503dd JB |
170 | wdev_lock(wdev); |
171 | if (!netif_running(wdev->netdev)) { | |
172 | wdev_unlock(wdev); | |
6829c878 | 173 | continue; |
667503dd JB |
174 | } |
175 | if (wdev->sme_state != CFG80211_SME_CONNECTING) { | |
176 | wdev_unlock(wdev); | |
6829c878 | 177 | continue; |
667503dd | 178 | } |
6829c878 | 179 | if (cfg80211_conn_do_work(wdev)) |
667503dd JB |
180 | __cfg80211_connect_result( |
181 | wdev->netdev, | |
182 | wdev->conn->params.bssid, | |
183 | NULL, 0, NULL, 0, | |
184 | WLAN_STATUS_UNSPECIFIED_FAILURE, | |
df7fc0f9 | 185 | false, NULL); |
667503dd | 186 | wdev_unlock(wdev); |
6829c878 JB |
187 | } |
188 | ||
79c97e97 JB |
189 | mutex_unlock(&rdev->devlist_mtx); |
190 | cfg80211_unlock_rdev(rdev); | |
6829c878 JB |
191 | rtnl_unlock(); |
192 | } | |
193 | ||
194 | static bool cfg80211_get_conn_bss(struct wireless_dev *wdev) | |
195 | { | |
79c97e97 | 196 | struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy); |
6829c878 JB |
197 | struct cfg80211_bss *bss; |
198 | u16 capa = WLAN_CAPABILITY_ESS; | |
199 | ||
667503dd JB |
200 | ASSERT_WDEV_LOCK(wdev); |
201 | ||
6829c878 JB |
202 | if (wdev->conn->params.privacy) |
203 | capa |= WLAN_CAPABILITY_PRIVACY; | |
204 | ||
205 | bss = cfg80211_get_bss(wdev->wiphy, NULL, wdev->conn->params.bssid, | |
206 | wdev->conn->params.ssid, | |
207 | wdev->conn->params.ssid_len, | |
208 | WLAN_CAPABILITY_ESS | WLAN_CAPABILITY_PRIVACY, | |
209 | capa); | |
6829c878 JB |
210 | if (!bss) |
211 | return false; | |
212 | ||
213 | memcpy(wdev->conn->bssid, bss->bssid, ETH_ALEN); | |
214 | wdev->conn->params.bssid = wdev->conn->bssid; | |
215 | wdev->conn->params.channel = bss->channel; | |
216 | wdev->conn->state = CFG80211_CONN_AUTHENTICATE_NEXT; | |
79c97e97 | 217 | schedule_work(&rdev->conn_work); |
6829c878 JB |
218 | |
219 | cfg80211_put_bss(bss); | |
220 | return true; | |
221 | } | |
222 | ||
667503dd | 223 | static void __cfg80211_sme_scan_done(struct net_device *dev) |
6829c878 JB |
224 | { |
225 | struct wireless_dev *wdev = dev->ieee80211_ptr; | |
79c97e97 | 226 | struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy); |
6829c878 | 227 | |
667503dd JB |
228 | ASSERT_WDEV_LOCK(wdev); |
229 | ||
6829c878 JB |
230 | if (wdev->sme_state != CFG80211_SME_CONNECTING) |
231 | return; | |
232 | ||
d4b1a687 | 233 | if (!wdev->conn) |
6829c878 JB |
234 | return; |
235 | ||
236 | if (wdev->conn->state != CFG80211_CONN_SCANNING && | |
237 | wdev->conn->state != CFG80211_CONN_SCAN_AGAIN) | |
238 | return; | |
239 | ||
240 | if (!cfg80211_get_conn_bss(wdev)) { | |
241 | /* not found */ | |
242 | if (wdev->conn->state == CFG80211_CONN_SCAN_AGAIN) | |
79c97e97 | 243 | schedule_work(&rdev->conn_work); |
6829c878 | 244 | else |
667503dd JB |
245 | __cfg80211_connect_result( |
246 | wdev->netdev, | |
247 | wdev->conn->params.bssid, | |
248 | NULL, 0, NULL, 0, | |
249 | WLAN_STATUS_UNSPECIFIED_FAILURE, | |
df7fc0f9 | 250 | false, NULL); |
6829c878 JB |
251 | } |
252 | } | |
253 | ||
667503dd JB |
254 | void cfg80211_sme_scan_done(struct net_device *dev) |
255 | { | |
256 | struct wireless_dev *wdev = dev->ieee80211_ptr; | |
257 | ||
258 | wdev_lock(wdev); | |
259 | __cfg80211_sme_scan_done(dev); | |
260 | wdev_unlock(wdev); | |
261 | } | |
262 | ||
263 | void cfg80211_sme_rx_auth(struct net_device *dev, | |
264 | const u8 *buf, size_t len) | |
6829c878 JB |
265 | { |
266 | struct wireless_dev *wdev = dev->ieee80211_ptr; | |
267 | struct wiphy *wiphy = wdev->wiphy; | |
268 | struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); | |
269 | struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)buf; | |
270 | u16 status_code = le16_to_cpu(mgmt->u.auth.status_code); | |
271 | ||
667503dd JB |
272 | ASSERT_WDEV_LOCK(wdev); |
273 | ||
6829c878 JB |
274 | /* should only RX auth frames when connecting */ |
275 | if (wdev->sme_state != CFG80211_SME_CONNECTING) | |
276 | return; | |
277 | ||
278 | if (WARN_ON(!wdev->conn)) | |
279 | return; | |
280 | ||
281 | if (status_code == WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG && | |
282 | wdev->conn->auto_auth && | |
283 | wdev->conn->params.auth_type != NL80211_AUTHTYPE_NETWORK_EAP) { | |
284 | /* select automatically between only open, shared, leap */ | |
285 | switch (wdev->conn->params.auth_type) { | |
286 | case NL80211_AUTHTYPE_OPEN_SYSTEM: | |
fffd0934 JB |
287 | if (wdev->connect_keys) |
288 | wdev->conn->params.auth_type = | |
289 | NL80211_AUTHTYPE_SHARED_KEY; | |
290 | else | |
291 | wdev->conn->params.auth_type = | |
292 | NL80211_AUTHTYPE_NETWORK_EAP; | |
6829c878 JB |
293 | break; |
294 | case NL80211_AUTHTYPE_SHARED_KEY: | |
295 | wdev->conn->params.auth_type = | |
296 | NL80211_AUTHTYPE_NETWORK_EAP; | |
297 | break; | |
298 | default: | |
299 | /* huh? */ | |
300 | wdev->conn->params.auth_type = | |
301 | NL80211_AUTHTYPE_OPEN_SYSTEM; | |
302 | break; | |
303 | } | |
304 | wdev->conn->state = CFG80211_CONN_AUTHENTICATE_NEXT; | |
305 | schedule_work(&rdev->conn_work); | |
19957bb3 | 306 | } else if (status_code != WLAN_STATUS_SUCCESS) { |
4bde0f7d | 307 | __cfg80211_connect_result(dev, mgmt->bssid, NULL, 0, NULL, 0, |
df7fc0f9 | 308 | status_code, false, NULL); |
19957bb3 | 309 | } else if (wdev->sme_state == CFG80211_SME_CONNECTING && |
6829c878 JB |
310 | wdev->conn->state == CFG80211_CONN_AUTHENTICATING) { |
311 | wdev->conn->state = CFG80211_CONN_ASSOCIATE_NEXT; | |
312 | schedule_work(&rdev->conn_work); | |
313 | } | |
314 | } | |
b23aa676 | 315 | |
667503dd JB |
316 | void __cfg80211_connect_result(struct net_device *dev, const u8 *bssid, |
317 | const u8 *req_ie, size_t req_ie_len, | |
318 | const u8 *resp_ie, size_t resp_ie_len, | |
df7fc0f9 JB |
319 | u16 status, bool wextev, |
320 | struct cfg80211_bss *bss) | |
b23aa676 SO |
321 | { |
322 | struct wireless_dev *wdev = dev->ieee80211_ptr; | |
b23aa676 SO |
323 | #ifdef CONFIG_WIRELESS_EXT |
324 | union iwreq_data wrqu; | |
325 | #endif | |
326 | ||
667503dd JB |
327 | ASSERT_WDEV_LOCK(wdev); |
328 | ||
b23aa676 SO |
329 | if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION)) |
330 | return; | |
331 | ||
e45cd82a JB |
332 | if (wdev->sme_state == CFG80211_SME_CONNECTED) |
333 | nl80211_send_roamed(wiphy_to_dev(wdev->wiphy), dev, | |
334 | bssid, req_ie, req_ie_len, | |
667503dd | 335 | resp_ie, resp_ie_len, GFP_KERNEL); |
e45cd82a JB |
336 | else |
337 | nl80211_send_connect_result(wiphy_to_dev(wdev->wiphy), dev, | |
338 | bssid, req_ie, req_ie_len, | |
339 | resp_ie, resp_ie_len, | |
667503dd | 340 | status, GFP_KERNEL); |
e45cd82a JB |
341 | |
342 | #ifdef CONFIG_WIRELESS_EXT | |
343 | if (wextev) { | |
344 | if (req_ie && status == WLAN_STATUS_SUCCESS) { | |
345 | memset(&wrqu, 0, sizeof(wrqu)); | |
346 | wrqu.data.length = req_ie_len; | |
3409ff77 | 347 | wireless_send_event(dev, IWEVASSOCREQIE, &wrqu, req_ie); |
e45cd82a JB |
348 | } |
349 | ||
350 | if (resp_ie && status == WLAN_STATUS_SUCCESS) { | |
351 | memset(&wrqu, 0, sizeof(wrqu)); | |
352 | wrqu.data.length = resp_ie_len; | |
353 | wireless_send_event(dev, IWEVASSOCRESPIE, &wrqu, resp_ie); | |
354 | } | |
355 | ||
356 | memset(&wrqu, 0, sizeof(wrqu)); | |
357 | wrqu.ap_addr.sa_family = ARPHRD_ETHER; | |
358 | if (bssid && status == WLAN_STATUS_SUCCESS) | |
359 | memcpy(wrqu.ap_addr.sa_data, bssid, ETH_ALEN); | |
360 | wireless_send_event(dev, SIOCGIWAP, &wrqu, NULL); | |
361 | } | |
362 | #endif | |
363 | ||
df7fc0f9 JB |
364 | if (wdev->current_bss) { |
365 | cfg80211_unhold_bss(wdev->current_bss); | |
366 | cfg80211_put_bss(&wdev->current_bss->pub); | |
367 | wdev->current_bss = NULL; | |
368 | } | |
369 | ||
e45cd82a | 370 | if (status == WLAN_STATUS_SUCCESS && |
fffd0934 JB |
371 | wdev->sme_state == CFG80211_SME_IDLE) |
372 | goto success; | |
e45cd82a | 373 | |
6829c878 | 374 | if (wdev->sme_state != CFG80211_SME_CONNECTING) |
b23aa676 SO |
375 | return; |
376 | ||
19957bb3 JB |
377 | if (wdev->conn) |
378 | wdev->conn->state = CFG80211_CONN_IDLE; | |
379 | ||
fffd0934 | 380 | if (status != WLAN_STATUS_SUCCESS) { |
b23aa676 | 381 | wdev->sme_state = CFG80211_SME_IDLE; |
19957bb3 JB |
382 | kfree(wdev->conn); |
383 | wdev->conn = NULL; | |
fffd0934 JB |
384 | kfree(wdev->connect_keys); |
385 | wdev->connect_keys = NULL; | |
386 | return; | |
b23aa676 | 387 | } |
fffd0934 | 388 | |
df7fc0f9 JB |
389 | success: |
390 | if (!bss) | |
391 | bss = cfg80211_get_bss(wdev->wiphy, NULL, bssid, | |
392 | wdev->ssid, wdev->ssid_len, | |
393 | WLAN_CAPABILITY_ESS, | |
394 | WLAN_CAPABILITY_ESS); | |
fffd0934 JB |
395 | |
396 | if (WARN_ON(!bss)) | |
397 | return; | |
398 | ||
399 | cfg80211_hold_bss(bss_from_pub(bss)); | |
400 | wdev->current_bss = bss_from_pub(bss); | |
401 | ||
fffd0934 JB |
402 | wdev->sme_state = CFG80211_SME_CONNECTED; |
403 | cfg80211_upload_connect_keys(wdev); | |
b23aa676 | 404 | } |
f2129354 JB |
405 | |
406 | void cfg80211_connect_result(struct net_device *dev, const u8 *bssid, | |
407 | const u8 *req_ie, size_t req_ie_len, | |
408 | const u8 *resp_ie, size_t resp_ie_len, | |
409 | u16 status, gfp_t gfp) | |
410 | { | |
667503dd JB |
411 | struct wireless_dev *wdev = dev->ieee80211_ptr; |
412 | struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy); | |
413 | struct cfg80211_event *ev; | |
414 | unsigned long flags; | |
415 | ||
416 | ev = kzalloc(sizeof(*ev) + req_ie_len + resp_ie_len, gfp); | |
417 | if (!ev) | |
418 | return; | |
419 | ||
420 | ev->type = EVENT_CONNECT_RESULT; | |
421 | memcpy(ev->cr.bssid, bssid, ETH_ALEN); | |
422 | ev->cr.req_ie = ((u8 *)ev) + sizeof(*ev); | |
423 | ev->cr.req_ie_len = req_ie_len; | |
424 | memcpy((void *)ev->cr.req_ie, req_ie, req_ie_len); | |
425 | ev->cr.resp_ie = ((u8 *)ev) + sizeof(*ev) + req_ie_len; | |
426 | ev->cr.resp_ie_len = resp_ie_len; | |
427 | memcpy((void *)ev->cr.resp_ie, resp_ie, resp_ie_len); | |
428 | ev->cr.status = status; | |
429 | ||
430 | spin_lock_irqsave(&wdev->event_lock, flags); | |
431 | list_add_tail(&ev->list, &wdev->event_list); | |
432 | spin_unlock_irqrestore(&wdev->event_lock, flags); | |
433 | schedule_work(&rdev->event_work); | |
f2129354 | 434 | } |
b23aa676 SO |
435 | EXPORT_SYMBOL(cfg80211_connect_result); |
436 | ||
667503dd JB |
437 | void __cfg80211_roamed(struct wireless_dev *wdev, const u8 *bssid, |
438 | const u8 *req_ie, size_t req_ie_len, | |
439 | const u8 *resp_ie, size_t resp_ie_len) | |
b23aa676 | 440 | { |
b23aa676 SO |
441 | struct cfg80211_bss *bss; |
442 | #ifdef CONFIG_WIRELESS_EXT | |
443 | union iwreq_data wrqu; | |
444 | #endif | |
445 | ||
667503dd JB |
446 | ASSERT_WDEV_LOCK(wdev); |
447 | ||
b23aa676 SO |
448 | if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION)) |
449 | return; | |
450 | ||
451 | if (WARN_ON(wdev->sme_state != CFG80211_SME_CONNECTED)) | |
452 | return; | |
453 | ||
454 | /* internal error -- how did we get to CONNECTED w/o BSS? */ | |
455 | if (WARN_ON(!wdev->current_bss)) { | |
456 | return; | |
457 | } | |
458 | ||
459 | cfg80211_unhold_bss(wdev->current_bss); | |
19957bb3 | 460 | cfg80211_put_bss(&wdev->current_bss->pub); |
b23aa676 SO |
461 | wdev->current_bss = NULL; |
462 | ||
463 | bss = cfg80211_get_bss(wdev->wiphy, NULL, bssid, | |
464 | wdev->ssid, wdev->ssid_len, | |
465 | WLAN_CAPABILITY_ESS, WLAN_CAPABILITY_ESS); | |
466 | ||
467 | if (WARN_ON(!bss)) | |
468 | return; | |
469 | ||
19957bb3 JB |
470 | cfg80211_hold_bss(bss_from_pub(bss)); |
471 | wdev->current_bss = bss_from_pub(bss); | |
b23aa676 | 472 | |
667503dd JB |
473 | nl80211_send_roamed(wiphy_to_dev(wdev->wiphy), wdev->netdev, bssid, |
474 | req_ie, req_ie_len, resp_ie, resp_ie_len, | |
475 | GFP_KERNEL); | |
b23aa676 SO |
476 | |
477 | #ifdef CONFIG_WIRELESS_EXT | |
478 | if (req_ie) { | |
479 | memset(&wrqu, 0, sizeof(wrqu)); | |
480 | wrqu.data.length = req_ie_len; | |
3409ff77 | 481 | wireless_send_event(wdev->netdev, IWEVASSOCREQIE, |
667503dd | 482 | &wrqu, req_ie); |
b23aa676 SO |
483 | } |
484 | ||
485 | if (resp_ie) { | |
486 | memset(&wrqu, 0, sizeof(wrqu)); | |
487 | wrqu.data.length = resp_ie_len; | |
667503dd JB |
488 | wireless_send_event(wdev->netdev, IWEVASSOCRESPIE, |
489 | &wrqu, resp_ie); | |
b23aa676 SO |
490 | } |
491 | ||
492 | memset(&wrqu, 0, sizeof(wrqu)); | |
493 | wrqu.ap_addr.sa_family = ARPHRD_ETHER; | |
494 | memcpy(wrqu.ap_addr.sa_data, bssid, ETH_ALEN); | |
667503dd | 495 | wireless_send_event(wdev->netdev, SIOCGIWAP, &wrqu, NULL); |
b23aa676 SO |
496 | #endif |
497 | } | |
667503dd JB |
498 | |
499 | void cfg80211_roamed(struct net_device *dev, const u8 *bssid, | |
500 | const u8 *req_ie, size_t req_ie_len, | |
501 | const u8 *resp_ie, size_t resp_ie_len, gfp_t gfp) | |
502 | { | |
503 | struct wireless_dev *wdev = dev->ieee80211_ptr; | |
504 | struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy); | |
505 | struct cfg80211_event *ev; | |
506 | unsigned long flags; | |
507 | ||
508 | ev = kzalloc(sizeof(*ev) + req_ie_len + resp_ie_len, gfp); | |
509 | if (!ev) | |
510 | return; | |
511 | ||
512 | ev->type = EVENT_ROAMED; | |
513 | memcpy(ev->rm.bssid, bssid, ETH_ALEN); | |
514 | ev->rm.req_ie = ((u8 *)ev) + sizeof(*ev); | |
515 | ev->rm.req_ie_len = req_ie_len; | |
516 | memcpy((void *)ev->rm.req_ie, req_ie, req_ie_len); | |
517 | ev->rm.resp_ie = ((u8 *)ev) + sizeof(*ev) + req_ie_len; | |
518 | ev->rm.resp_ie_len = resp_ie_len; | |
519 | memcpy((void *)ev->rm.resp_ie, resp_ie, resp_ie_len); | |
520 | ||
521 | spin_lock_irqsave(&wdev->event_lock, flags); | |
522 | list_add_tail(&ev->list, &wdev->event_list); | |
523 | spin_unlock_irqrestore(&wdev->event_lock, flags); | |
524 | schedule_work(&rdev->event_work); | |
525 | } | |
b23aa676 SO |
526 | EXPORT_SYMBOL(cfg80211_roamed); |
527 | ||
667503dd | 528 | void __cfg80211_disconnected(struct net_device *dev, const u8 *ie, |
6829c878 | 529 | size_t ie_len, u16 reason, bool from_ap) |
b23aa676 SO |
530 | { |
531 | struct wireless_dev *wdev = dev->ieee80211_ptr; | |
fffd0934 JB |
532 | struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy); |
533 | int i; | |
b23aa676 SO |
534 | #ifdef CONFIG_WIRELESS_EXT |
535 | union iwreq_data wrqu; | |
536 | #endif | |
537 | ||
667503dd JB |
538 | ASSERT_WDEV_LOCK(wdev); |
539 | ||
b23aa676 SO |
540 | if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION)) |
541 | return; | |
542 | ||
543 | if (WARN_ON(wdev->sme_state != CFG80211_SME_CONNECTED)) | |
544 | return; | |
545 | ||
546 | if (wdev->current_bss) { | |
547 | cfg80211_unhold_bss(wdev->current_bss); | |
19957bb3 | 548 | cfg80211_put_bss(&wdev->current_bss->pub); |
b23aa676 SO |
549 | } |
550 | ||
551 | wdev->current_bss = NULL; | |
552 | wdev->sme_state = CFG80211_SME_IDLE; | |
553 | ||
6829c878 JB |
554 | if (wdev->conn) { |
555 | kfree(wdev->conn->ie); | |
556 | wdev->conn->ie = NULL; | |
19957bb3 JB |
557 | kfree(wdev->conn); |
558 | wdev->conn = NULL; | |
6829c878 JB |
559 | } |
560 | ||
fffd0934 JB |
561 | nl80211_send_disconnected(rdev, dev, reason, ie, ie_len, from_ap); |
562 | ||
563 | /* | |
564 | * Delete all the keys ... pairwise keys can't really | |
565 | * exist any more anyway, but default keys might. | |
566 | */ | |
567 | if (rdev->ops->del_key) | |
568 | for (i = 0; i < 6; i++) | |
569 | rdev->ops->del_key(wdev->wiphy, dev, i, NULL); | |
b23aa676 SO |
570 | |
571 | #ifdef CONFIG_WIRELESS_EXT | |
572 | memset(&wrqu, 0, sizeof(wrqu)); | |
573 | wrqu.ap_addr.sa_family = ARPHRD_ETHER; | |
574 | wireless_send_event(dev, SIOCGIWAP, &wrqu, NULL); | |
575 | #endif | |
576 | } | |
577 | ||
578 | void cfg80211_disconnected(struct net_device *dev, u16 reason, | |
579 | u8 *ie, size_t ie_len, gfp_t gfp) | |
580 | { | |
667503dd JB |
581 | struct wireless_dev *wdev = dev->ieee80211_ptr; |
582 | struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy); | |
583 | struct cfg80211_event *ev; | |
584 | unsigned long flags; | |
585 | ||
586 | ev = kzalloc(sizeof(*ev) + ie_len, gfp); | |
587 | if (!ev) | |
588 | return; | |
589 | ||
590 | ev->type = EVENT_DISCONNECTED; | |
591 | ev->dc.ie = ((u8 *)ev) + sizeof(*ev); | |
592 | ev->dc.ie_len = ie_len; | |
593 | memcpy((void *)ev->dc.ie, ie, ie_len); | |
594 | ev->dc.reason = reason; | |
595 | ||
596 | spin_lock_irqsave(&wdev->event_lock, flags); | |
597 | list_add_tail(&ev->list, &wdev->event_list); | |
598 | spin_unlock_irqrestore(&wdev->event_lock, flags); | |
599 | schedule_work(&rdev->event_work); | |
b23aa676 SO |
600 | } |
601 | EXPORT_SYMBOL(cfg80211_disconnected); | |
602 | ||
667503dd JB |
603 | int __cfg80211_connect(struct cfg80211_registered_device *rdev, |
604 | struct net_device *dev, | |
fffd0934 JB |
605 | struct cfg80211_connect_params *connect, |
606 | struct cfg80211_cached_keys *connkeys) | |
b23aa676 | 607 | { |
b23aa676 | 608 | struct wireless_dev *wdev = dev->ieee80211_ptr; |
667503dd JB |
609 | int err; |
610 | ||
611 | ASSERT_WDEV_LOCK(wdev); | |
b23aa676 SO |
612 | |
613 | if (wdev->sme_state != CFG80211_SME_IDLE) | |
614 | return -EALREADY; | |
615 | ||
fffd0934 JB |
616 | if (WARN_ON(wdev->connect_keys)) { |
617 | kfree(wdev->connect_keys); | |
618 | wdev->connect_keys = NULL; | |
619 | } | |
620 | ||
621 | if (connkeys && connkeys->def >= 0) { | |
622 | int idx; | |
623 | ||
624 | idx = connkeys->def; | |
625 | /* If given a WEP key we may need it for shared key auth */ | |
626 | if (connkeys->params[idx].cipher == WLAN_CIPHER_SUITE_WEP40 || | |
627 | connkeys->params[idx].cipher == WLAN_CIPHER_SUITE_WEP104) { | |
628 | connect->key_idx = idx; | |
629 | connect->key = connkeys->params[idx].key; | |
630 | connect->key_len = connkeys->params[idx].key_len; | |
631 | } | |
632 | } | |
633 | ||
b23aa676 | 634 | if (!rdev->ops->connect) { |
6829c878 JB |
635 | if (!rdev->ops->auth || !rdev->ops->assoc) |
636 | return -EOPNOTSUPP; | |
637 | ||
19957bb3 JB |
638 | if (WARN_ON(wdev->conn)) |
639 | return -EINPROGRESS; | |
640 | ||
641 | wdev->conn = kzalloc(sizeof(*wdev->conn), GFP_KERNEL); | |
642 | if (!wdev->conn) | |
643 | return -ENOMEM; | |
6829c878 JB |
644 | |
645 | /* | |
646 | * Copy all parameters, and treat explicitly IEs, BSSID, SSID. | |
647 | */ | |
648 | memcpy(&wdev->conn->params, connect, sizeof(*connect)); | |
649 | if (connect->bssid) { | |
650 | wdev->conn->params.bssid = wdev->conn->bssid; | |
651 | memcpy(wdev->conn->bssid, connect->bssid, ETH_ALEN); | |
652 | } | |
653 | ||
654 | if (connect->ie) { | |
655 | wdev->conn->ie = kmemdup(connect->ie, connect->ie_len, | |
656 | GFP_KERNEL); | |
657 | wdev->conn->params.ie = wdev->conn->ie; | |
19957bb3 JB |
658 | if (!wdev->conn->ie) { |
659 | kfree(wdev->conn); | |
660 | wdev->conn = NULL; | |
6829c878 | 661 | return -ENOMEM; |
19957bb3 | 662 | } |
6829c878 JB |
663 | } |
664 | ||
665 | if (connect->auth_type == NL80211_AUTHTYPE_AUTOMATIC) { | |
666 | wdev->conn->auto_auth = true; | |
667 | /* start with open system ... should mostly work */ | |
668 | wdev->conn->params.auth_type = | |
669 | NL80211_AUTHTYPE_OPEN_SYSTEM; | |
670 | } else { | |
671 | wdev->conn->auto_auth = false; | |
672 | } | |
673 | ||
674 | memcpy(wdev->ssid, connect->ssid, connect->ssid_len); | |
675 | wdev->ssid_len = connect->ssid_len; | |
676 | wdev->conn->params.ssid = wdev->ssid; | |
677 | wdev->conn->params.ssid_len = connect->ssid_len; | |
678 | ||
679 | /* don't care about result -- but fill bssid & channel */ | |
680 | if (!wdev->conn->params.bssid || !wdev->conn->params.channel) | |
681 | cfg80211_get_conn_bss(wdev); | |
682 | ||
683 | wdev->sme_state = CFG80211_SME_CONNECTING; | |
fffd0934 | 684 | wdev->connect_keys = connkeys; |
6829c878 JB |
685 | |
686 | /* we're good if we have both BSSID and channel */ | |
687 | if (wdev->conn->params.bssid && wdev->conn->params.channel) { | |
688 | wdev->conn->state = CFG80211_CONN_AUTHENTICATE_NEXT; | |
689 | err = cfg80211_conn_do_work(wdev); | |
690 | } else { | |
691 | /* otherwise we'll need to scan for the AP first */ | |
692 | err = cfg80211_conn_scan(wdev); | |
693 | /* | |
694 | * If we can't scan right now, then we need to scan again | |
695 | * after the current scan finished, since the parameters | |
696 | * changed (unless we find a good AP anyway). | |
697 | */ | |
698 | if (err == -EBUSY) { | |
699 | err = 0; | |
700 | wdev->conn->state = CFG80211_CONN_SCAN_AGAIN; | |
701 | } | |
702 | } | |
19957bb3 JB |
703 | if (err) { |
704 | kfree(wdev->conn); | |
705 | wdev->conn = NULL; | |
6829c878 | 706 | wdev->sme_state = CFG80211_SME_IDLE; |
fffd0934 | 707 | wdev->connect_keys = NULL; |
19957bb3 | 708 | } |
6829c878 JB |
709 | |
710 | return err; | |
b23aa676 SO |
711 | } else { |
712 | wdev->sme_state = CFG80211_SME_CONNECTING; | |
fffd0934 | 713 | wdev->connect_keys = connkeys; |
b23aa676 SO |
714 | err = rdev->ops->connect(&rdev->wiphy, dev, connect); |
715 | if (err) { | |
fffd0934 | 716 | wdev->connect_keys = NULL; |
b23aa676 SO |
717 | wdev->sme_state = CFG80211_SME_IDLE; |
718 | return err; | |
719 | } | |
b23aa676 | 720 | |
6829c878 JB |
721 | memcpy(wdev->ssid, connect->ssid, connect->ssid_len); |
722 | wdev->ssid_len = connect->ssid_len; | |
b23aa676 | 723 | |
6829c878 JB |
724 | return 0; |
725 | } | |
b23aa676 SO |
726 | } |
727 | ||
667503dd JB |
728 | int cfg80211_connect(struct cfg80211_registered_device *rdev, |
729 | struct net_device *dev, | |
fffd0934 JB |
730 | struct cfg80211_connect_params *connect, |
731 | struct cfg80211_cached_keys *connkeys) | |
667503dd JB |
732 | { |
733 | int err; | |
734 | ||
735 | wdev_lock(dev->ieee80211_ptr); | |
fffd0934 | 736 | err = __cfg80211_connect(rdev, dev, connect, connkeys); |
667503dd JB |
737 | wdev_unlock(dev->ieee80211_ptr); |
738 | ||
739 | return err; | |
740 | } | |
741 | ||
742 | int __cfg80211_disconnect(struct cfg80211_registered_device *rdev, | |
743 | struct net_device *dev, u16 reason, bool wextev) | |
b23aa676 | 744 | { |
6829c878 | 745 | struct wireless_dev *wdev = dev->ieee80211_ptr; |
b23aa676 SO |
746 | int err; |
747 | ||
667503dd JB |
748 | ASSERT_WDEV_LOCK(wdev); |
749 | ||
6829c878 JB |
750 | if (wdev->sme_state == CFG80211_SME_IDLE) |
751 | return -EINVAL; | |
752 | ||
fffd0934 JB |
753 | kfree(wdev->connect_keys); |
754 | wdev->connect_keys = NULL; | |
755 | ||
b23aa676 | 756 | if (!rdev->ops->disconnect) { |
19957bb3 JB |
757 | if (!rdev->ops->deauth) |
758 | return -EOPNOTSUPP; | |
6829c878 | 759 | |
19957bb3 JB |
760 | /* was it connected by userspace SME? */ |
761 | if (!wdev->conn) { | |
762 | cfg80211_mlme_down(rdev, dev); | |
763 | return 0; | |
764 | } | |
6829c878 JB |
765 | |
766 | if (wdev->sme_state == CFG80211_SME_CONNECTING && | |
767 | (wdev->conn->state == CFG80211_CONN_SCANNING || | |
768 | wdev->conn->state == CFG80211_CONN_SCAN_AGAIN)) { | |
769 | wdev->sme_state = CFG80211_SME_IDLE; | |
19957bb3 JB |
770 | kfree(wdev->conn); |
771 | wdev->conn = NULL; | |
6829c878 JB |
772 | return 0; |
773 | } | |
774 | ||
6829c878 | 775 | /* wdev->conn->params.bssid must be set if > SCANNING */ |
667503dd JB |
776 | err = __cfg80211_mlme_deauth(rdev, dev, |
777 | wdev->conn->params.bssid, | |
778 | NULL, 0, reason); | |
6829c878 JB |
779 | if (err) |
780 | return err; | |
b23aa676 SO |
781 | } else { |
782 | err = rdev->ops->disconnect(&rdev->wiphy, dev, reason); | |
783 | if (err) | |
784 | return err; | |
785 | } | |
786 | ||
6829c878 | 787 | if (wdev->sme_state == CFG80211_SME_CONNECTED) |
667503dd | 788 | __cfg80211_disconnected(dev, NULL, 0, 0, false); |
6829c878 | 789 | else if (wdev->sme_state == CFG80211_SME_CONNECTING) |
f2129354 JB |
790 | __cfg80211_connect_result(dev, NULL, NULL, 0, NULL, 0, |
791 | WLAN_STATUS_UNSPECIFIED_FAILURE, | |
df7fc0f9 | 792 | wextev, NULL); |
b23aa676 SO |
793 | |
794 | return 0; | |
795 | } | |
19957bb3 | 796 | |
667503dd JB |
797 | int cfg80211_disconnect(struct cfg80211_registered_device *rdev, |
798 | struct net_device *dev, | |
799 | u16 reason, bool wextev) | |
800 | { | |
801 | int err; | |
802 | ||
803 | wdev_lock(dev->ieee80211_ptr); | |
804 | err = __cfg80211_disconnect(rdev, dev, reason, wextev); | |
805 | wdev_unlock(dev->ieee80211_ptr); | |
806 | ||
807 | return err; | |
808 | } | |
809 | ||
19957bb3 JB |
810 | void cfg80211_sme_disassoc(struct net_device *dev, int idx) |
811 | { | |
812 | struct wireless_dev *wdev = dev->ieee80211_ptr; | |
813 | struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy); | |
814 | u8 bssid[ETH_ALEN]; | |
815 | ||
667503dd JB |
816 | ASSERT_WDEV_LOCK(wdev); |
817 | ||
19957bb3 JB |
818 | if (!wdev->conn) |
819 | return; | |
820 | ||
821 | if (wdev->conn->state == CFG80211_CONN_IDLE) | |
822 | return; | |
823 | ||
824 | /* | |
825 | * Ok, so the association was made by this SME -- we don't | |
826 | * want it any more so deauthenticate too. | |
827 | */ | |
828 | ||
829 | if (!wdev->auth_bsses[idx]) | |
830 | return; | |
831 | ||
832 | memcpy(bssid, wdev->auth_bsses[idx]->pub.bssid, ETH_ALEN); | |
ec3f1490 JB |
833 | if (__cfg80211_mlme_deauth(rdev, dev, bssid, |
834 | NULL, 0, WLAN_REASON_DEAUTH_LEAVING)) { | |
19957bb3 JB |
835 | /* whatever -- assume gone anyway */ |
836 | cfg80211_unhold_bss(wdev->auth_bsses[idx]); | |
837 | cfg80211_put_bss(&wdev->auth_bsses[idx]->pub); | |
838 | wdev->auth_bsses[idx] = NULL; | |
839 | } | |
840 | } |