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> | |
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 |
18 | struct 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, | |
29 | } state; | |
30 | u8 bssid[ETH_ALEN]; | |
31 | u8 *ie; | |
32 | size_t ie_len; | |
33 | bool auto_auth; | |
34 | }; | |
35 | ||
36 | ||
37 | static int cfg80211_conn_scan(struct wireless_dev *wdev) | |
38 | { | |
79c97e97 | 39 | struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy); |
6829c878 JB |
40 | struct cfg80211_scan_request *request; |
41 | int n_channels, err; | |
42 | ||
43 | ASSERT_RTNL(); | |
79c97e97 | 44 | ASSERT_RDEV_LOCK(rdev); |
667503dd | 45 | ASSERT_WDEV_LOCK(wdev); |
6829c878 | 46 | |
79c97e97 | 47 | if (rdev->scan_req) |
6829c878 JB |
48 | return -EBUSY; |
49 | ||
50 | if (wdev->conn->params.channel) { | |
51 | n_channels = 1; | |
52 | } else { | |
53 | enum ieee80211_band band; | |
54 | n_channels = 0; | |
55 | ||
56 | for (band = 0; band < IEEE80211_NUM_BANDS; band++) { | |
57 | if (!wdev->wiphy->bands[band]) | |
58 | continue; | |
59 | n_channels += wdev->wiphy->bands[band]->n_channels; | |
60 | } | |
61 | } | |
62 | request = kzalloc(sizeof(*request) + sizeof(request->ssids[0]) + | |
63 | sizeof(request->channels[0]) * n_channels, | |
64 | GFP_KERNEL); | |
65 | if (!request) | |
66 | return -ENOMEM; | |
67 | ||
68 | request->channels = (void *)((char *)request + sizeof(*request)); | |
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; | |
85 | request->ssids = (void *)(request->channels + n_channels); | |
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 | ||
109 | static int cfg80211_conn_do_work(struct wireless_dev *wdev) | |
110 | { | |
79c97e97 | 111 | struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy); |
19957bb3 JB |
112 | struct cfg80211_connect_params *params; |
113 | int err; | |
6829c878 | 114 | |
667503dd JB |
115 | ASSERT_WDEV_LOCK(wdev); |
116 | ||
6829c878 JB |
117 | if (!wdev->conn) |
118 | return 0; | |
119 | ||
19957bb3 JB |
120 | params = &wdev->conn->params; |
121 | ||
6829c878 JB |
122 | switch (wdev->conn->state) { |
123 | case CFG80211_CONN_SCAN_AGAIN: | |
124 | return cfg80211_conn_scan(wdev); | |
125 | case CFG80211_CONN_AUTHENTICATE_NEXT: | |
79c97e97 | 126 | BUG_ON(!rdev->ops->auth); |
19957bb3 | 127 | wdev->conn->state = CFG80211_CONN_AUTHENTICATING; |
79c97e97 | 128 | return __cfg80211_mlme_auth(rdev, wdev->netdev, |
667503dd JB |
129 | params->channel, params->auth_type, |
130 | params->bssid, | |
131 | params->ssid, params->ssid_len, | |
fffd0934 JB |
132 | NULL, 0, |
133 | params->key, params->key_len, | |
134 | params->key_idx); | |
6829c878 | 135 | case CFG80211_CONN_ASSOCIATE_NEXT: |
79c97e97 | 136 | BUG_ON(!rdev->ops->assoc); |
19957bb3 | 137 | wdev->conn->state = CFG80211_CONN_ASSOCIATING; |
3e5d7649 JB |
138 | /* |
139 | * We could, later, implement roaming here and then actually | |
140 | * set prev_bssid to non-NULL. But then we need to be aware | |
141 | * that some APs don't like that -- so we'd need to retry | |
142 | * the association. | |
143 | */ | |
79c97e97 | 144 | err = __cfg80211_mlme_assoc(rdev, wdev->netdev, |
667503dd JB |
145 | params->channel, params->bssid, |
146 | NULL, | |
147 | params->ssid, params->ssid_len, | |
148 | params->ie, params->ie_len, | |
149 | false, ¶ms->crypto); | |
19957bb3 | 150 | if (err) |
79c97e97 | 151 | __cfg80211_mlme_deauth(rdev, wdev->netdev, params->bssid, |
667503dd JB |
152 | NULL, 0, |
153 | WLAN_REASON_DEAUTH_LEAVING); | |
19957bb3 | 154 | return err; |
6829c878 JB |
155 | default: |
156 | return 0; | |
157 | } | |
158 | } | |
159 | ||
160 | void cfg80211_conn_work(struct work_struct *work) | |
161 | { | |
79c97e97 | 162 | struct cfg80211_registered_device *rdev = |
6829c878 JB |
163 | container_of(work, struct cfg80211_registered_device, conn_work); |
164 | struct wireless_dev *wdev; | |
165 | ||
166 | rtnl_lock(); | |
79c97e97 JB |
167 | cfg80211_lock_rdev(rdev); |
168 | mutex_lock(&rdev->devlist_mtx); | |
6829c878 | 169 | |
79c97e97 | 170 | list_for_each_entry(wdev, &rdev->netdev_list, list) { |
667503dd JB |
171 | wdev_lock(wdev); |
172 | if (!netif_running(wdev->netdev)) { | |
173 | wdev_unlock(wdev); | |
6829c878 | 174 | continue; |
667503dd JB |
175 | } |
176 | if (wdev->sme_state != CFG80211_SME_CONNECTING) { | |
177 | wdev_unlock(wdev); | |
6829c878 | 178 | continue; |
667503dd | 179 | } |
6829c878 | 180 | if (cfg80211_conn_do_work(wdev)) |
667503dd JB |
181 | __cfg80211_connect_result( |
182 | wdev->netdev, | |
183 | wdev->conn->params.bssid, | |
184 | NULL, 0, NULL, 0, | |
185 | WLAN_STATUS_UNSPECIFIED_FAILURE, | |
df7fc0f9 | 186 | false, NULL); |
667503dd | 187 | wdev_unlock(wdev); |
6829c878 JB |
188 | } |
189 | ||
79c97e97 JB |
190 | mutex_unlock(&rdev->devlist_mtx); |
191 | cfg80211_unlock_rdev(rdev); | |
6829c878 JB |
192 | rtnl_unlock(); |
193 | } | |
194 | ||
195 | static bool cfg80211_get_conn_bss(struct wireless_dev *wdev) | |
196 | { | |
79c97e97 | 197 | struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy); |
6829c878 JB |
198 | struct cfg80211_bss *bss; |
199 | u16 capa = WLAN_CAPABILITY_ESS; | |
200 | ||
667503dd JB |
201 | ASSERT_WDEV_LOCK(wdev); |
202 | ||
6829c878 JB |
203 | if (wdev->conn->params.privacy) |
204 | capa |= WLAN_CAPABILITY_PRIVACY; | |
205 | ||
206 | bss = cfg80211_get_bss(wdev->wiphy, NULL, wdev->conn->params.bssid, | |
207 | wdev->conn->params.ssid, | |
208 | wdev->conn->params.ssid_len, | |
209 | WLAN_CAPABILITY_ESS | WLAN_CAPABILITY_PRIVACY, | |
210 | capa); | |
6829c878 JB |
211 | if (!bss) |
212 | return false; | |
213 | ||
214 | memcpy(wdev->conn->bssid, bss->bssid, ETH_ALEN); | |
215 | wdev->conn->params.bssid = wdev->conn->bssid; | |
216 | wdev->conn->params.channel = bss->channel; | |
217 | wdev->conn->state = CFG80211_CONN_AUTHENTICATE_NEXT; | |
79c97e97 | 218 | schedule_work(&rdev->conn_work); |
6829c878 JB |
219 | |
220 | cfg80211_put_bss(bss); | |
221 | return true; | |
222 | } | |
223 | ||
667503dd | 224 | static void __cfg80211_sme_scan_done(struct net_device *dev) |
6829c878 JB |
225 | { |
226 | struct wireless_dev *wdev = dev->ieee80211_ptr; | |
79c97e97 | 227 | struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy); |
6829c878 | 228 | |
667503dd JB |
229 | ASSERT_WDEV_LOCK(wdev); |
230 | ||
6829c878 JB |
231 | if (wdev->sme_state != CFG80211_SME_CONNECTING) |
232 | return; | |
233 | ||
d4b1a687 | 234 | if (!wdev->conn) |
6829c878 JB |
235 | return; |
236 | ||
237 | if (wdev->conn->state != CFG80211_CONN_SCANNING && | |
238 | wdev->conn->state != CFG80211_CONN_SCAN_AGAIN) | |
239 | return; | |
240 | ||
241 | if (!cfg80211_get_conn_bss(wdev)) { | |
242 | /* not found */ | |
243 | if (wdev->conn->state == CFG80211_CONN_SCAN_AGAIN) | |
79c97e97 | 244 | schedule_work(&rdev->conn_work); |
6829c878 | 245 | else |
667503dd JB |
246 | __cfg80211_connect_result( |
247 | wdev->netdev, | |
248 | wdev->conn->params.bssid, | |
249 | NULL, 0, NULL, 0, | |
250 | WLAN_STATUS_UNSPECIFIED_FAILURE, | |
df7fc0f9 | 251 | false, NULL); |
6829c878 JB |
252 | } |
253 | } | |
254 | ||
667503dd JB |
255 | void cfg80211_sme_scan_done(struct net_device *dev) |
256 | { | |
257 | struct wireless_dev *wdev = dev->ieee80211_ptr; | |
258 | ||
259 | wdev_lock(wdev); | |
260 | __cfg80211_sme_scan_done(dev); | |
261 | wdev_unlock(wdev); | |
262 | } | |
263 | ||
264 | void cfg80211_sme_rx_auth(struct net_device *dev, | |
265 | const u8 *buf, size_t len) | |
6829c878 JB |
266 | { |
267 | struct wireless_dev *wdev = dev->ieee80211_ptr; | |
268 | struct wiphy *wiphy = wdev->wiphy; | |
269 | struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); | |
270 | struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)buf; | |
271 | u16 status_code = le16_to_cpu(mgmt->u.auth.status_code); | |
272 | ||
667503dd JB |
273 | ASSERT_WDEV_LOCK(wdev); |
274 | ||
6829c878 JB |
275 | /* should only RX auth frames when connecting */ |
276 | if (wdev->sme_state != CFG80211_SME_CONNECTING) | |
277 | return; | |
278 | ||
279 | if (WARN_ON(!wdev->conn)) | |
280 | return; | |
281 | ||
282 | if (status_code == WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG && | |
283 | wdev->conn->auto_auth && | |
284 | wdev->conn->params.auth_type != NL80211_AUTHTYPE_NETWORK_EAP) { | |
285 | /* select automatically between only open, shared, leap */ | |
286 | switch (wdev->conn->params.auth_type) { | |
287 | case NL80211_AUTHTYPE_OPEN_SYSTEM: | |
fffd0934 JB |
288 | if (wdev->connect_keys) |
289 | wdev->conn->params.auth_type = | |
290 | NL80211_AUTHTYPE_SHARED_KEY; | |
291 | else | |
292 | wdev->conn->params.auth_type = | |
293 | NL80211_AUTHTYPE_NETWORK_EAP; | |
6829c878 JB |
294 | break; |
295 | case NL80211_AUTHTYPE_SHARED_KEY: | |
296 | wdev->conn->params.auth_type = | |
297 | NL80211_AUTHTYPE_NETWORK_EAP; | |
298 | break; | |
299 | default: | |
300 | /* huh? */ | |
301 | wdev->conn->params.auth_type = | |
302 | NL80211_AUTHTYPE_OPEN_SYSTEM; | |
303 | break; | |
304 | } | |
305 | wdev->conn->state = CFG80211_CONN_AUTHENTICATE_NEXT; | |
306 | schedule_work(&rdev->conn_work); | |
19957bb3 | 307 | } else if (status_code != WLAN_STATUS_SUCCESS) { |
4bde0f7d | 308 | __cfg80211_connect_result(dev, mgmt->bssid, NULL, 0, NULL, 0, |
df7fc0f9 | 309 | status_code, false, NULL); |
19957bb3 | 310 | } else if (wdev->sme_state == CFG80211_SME_CONNECTING && |
6829c878 JB |
311 | wdev->conn->state == CFG80211_CONN_AUTHENTICATING) { |
312 | wdev->conn->state = CFG80211_CONN_ASSOCIATE_NEXT; | |
313 | schedule_work(&rdev->conn_work); | |
314 | } | |
315 | } | |
b23aa676 | 316 | |
667503dd JB |
317 | void __cfg80211_connect_result(struct net_device *dev, const u8 *bssid, |
318 | const u8 *req_ie, size_t req_ie_len, | |
319 | const u8 *resp_ie, size_t resp_ie_len, | |
df7fc0f9 JB |
320 | u16 status, bool wextev, |
321 | struct cfg80211_bss *bss) | |
b23aa676 SO |
322 | { |
323 | struct wireless_dev *wdev = dev->ieee80211_ptr; | |
8b19e6ca | 324 | u8 *country_ie; |
b23aa676 SO |
325 | #ifdef CONFIG_WIRELESS_EXT |
326 | union iwreq_data wrqu; | |
327 | #endif | |
328 | ||
667503dd JB |
329 | ASSERT_WDEV_LOCK(wdev); |
330 | ||
b23aa676 SO |
331 | if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION)) |
332 | return; | |
333 | ||
e45cd82a JB |
334 | if (wdev->sme_state == CFG80211_SME_CONNECTED) |
335 | nl80211_send_roamed(wiphy_to_dev(wdev->wiphy), dev, | |
336 | bssid, req_ie, req_ie_len, | |
667503dd | 337 | resp_ie, resp_ie_len, GFP_KERNEL); |
e45cd82a JB |
338 | else |
339 | nl80211_send_connect_result(wiphy_to_dev(wdev->wiphy), dev, | |
340 | bssid, req_ie, req_ie_len, | |
341 | resp_ie, resp_ie_len, | |
667503dd | 342 | status, GFP_KERNEL); |
e45cd82a JB |
343 | |
344 | #ifdef CONFIG_WIRELESS_EXT | |
345 | if (wextev) { | |
346 | if (req_ie && status == WLAN_STATUS_SUCCESS) { | |
347 | memset(&wrqu, 0, sizeof(wrqu)); | |
348 | wrqu.data.length = req_ie_len; | |
3409ff77 | 349 | wireless_send_event(dev, IWEVASSOCREQIE, &wrqu, req_ie); |
e45cd82a JB |
350 | } |
351 | ||
352 | if (resp_ie && status == WLAN_STATUS_SUCCESS) { | |
353 | memset(&wrqu, 0, sizeof(wrqu)); | |
354 | wrqu.data.length = resp_ie_len; | |
355 | wireless_send_event(dev, IWEVASSOCRESPIE, &wrqu, resp_ie); | |
356 | } | |
357 | ||
358 | memset(&wrqu, 0, sizeof(wrqu)); | |
359 | wrqu.ap_addr.sa_family = ARPHRD_ETHER; | |
360 | if (bssid && status == WLAN_STATUS_SUCCESS) | |
361 | memcpy(wrqu.ap_addr.sa_data, bssid, ETH_ALEN); | |
362 | wireless_send_event(dev, SIOCGIWAP, &wrqu, NULL); | |
363 | } | |
364 | #endif | |
365 | ||
df7fc0f9 JB |
366 | if (wdev->current_bss) { |
367 | cfg80211_unhold_bss(wdev->current_bss); | |
368 | cfg80211_put_bss(&wdev->current_bss->pub); | |
369 | wdev->current_bss = NULL; | |
370 | } | |
371 | ||
e45cd82a | 372 | if (status == WLAN_STATUS_SUCCESS && |
fffd0934 JB |
373 | wdev->sme_state == CFG80211_SME_IDLE) |
374 | goto success; | |
e45cd82a | 375 | |
6829c878 | 376 | if (wdev->sme_state != CFG80211_SME_CONNECTING) |
b23aa676 SO |
377 | return; |
378 | ||
19957bb3 JB |
379 | if (wdev->conn) |
380 | wdev->conn->state = CFG80211_CONN_IDLE; | |
381 | ||
fffd0934 | 382 | if (status != WLAN_STATUS_SUCCESS) { |
b23aa676 | 383 | wdev->sme_state = CFG80211_SME_IDLE; |
19957bb3 JB |
384 | kfree(wdev->conn); |
385 | wdev->conn = NULL; | |
fffd0934 JB |
386 | kfree(wdev->connect_keys); |
387 | wdev->connect_keys = NULL; | |
8dadadb7 | 388 | wdev->ssid_len = 0; |
fffd0934 | 389 | return; |
b23aa676 | 390 | } |
fffd0934 | 391 | |
df7fc0f9 JB |
392 | success: |
393 | if (!bss) | |
394 | bss = cfg80211_get_bss(wdev->wiphy, NULL, bssid, | |
395 | wdev->ssid, wdev->ssid_len, | |
396 | WLAN_CAPABILITY_ESS, | |
397 | WLAN_CAPABILITY_ESS); | |
fffd0934 JB |
398 | |
399 | if (WARN_ON(!bss)) | |
400 | return; | |
401 | ||
402 | cfg80211_hold_bss(bss_from_pub(bss)); | |
403 | wdev->current_bss = bss_from_pub(bss); | |
404 | ||
fffd0934 JB |
405 | wdev->sme_state = CFG80211_SME_CONNECTED; |
406 | cfg80211_upload_connect_keys(wdev); | |
8b19e6ca LR |
407 | |
408 | country_ie = (u8 *) ieee80211_bss_get_ie(bss, WLAN_EID_COUNTRY); | |
409 | ||
410 | if (!country_ie) | |
411 | return; | |
412 | ||
413 | /* | |
414 | * ieee80211_bss_get_ie() ensures we can access: | |
415 | * - country_ie + 2, the start of the country ie data, and | |
416 | * - and country_ie[1] which is the IE length | |
417 | */ | |
418 | regulatory_hint_11d(wdev->wiphy, | |
419 | country_ie + 2, | |
420 | country_ie[1]); | |
b23aa676 | 421 | } |
f2129354 JB |
422 | |
423 | void cfg80211_connect_result(struct net_device *dev, const u8 *bssid, | |
424 | const u8 *req_ie, size_t req_ie_len, | |
425 | const u8 *resp_ie, size_t resp_ie_len, | |
426 | u16 status, gfp_t gfp) | |
427 | { | |
667503dd JB |
428 | struct wireless_dev *wdev = dev->ieee80211_ptr; |
429 | struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy); | |
430 | struct cfg80211_event *ev; | |
431 | unsigned long flags; | |
432 | ||
433 | ev = kzalloc(sizeof(*ev) + req_ie_len + resp_ie_len, gfp); | |
434 | if (!ev) | |
435 | return; | |
436 | ||
437 | ev->type = EVENT_CONNECT_RESULT; | |
438 | memcpy(ev->cr.bssid, bssid, ETH_ALEN); | |
439 | ev->cr.req_ie = ((u8 *)ev) + sizeof(*ev); | |
440 | ev->cr.req_ie_len = req_ie_len; | |
441 | memcpy((void *)ev->cr.req_ie, req_ie, req_ie_len); | |
442 | ev->cr.resp_ie = ((u8 *)ev) + sizeof(*ev) + req_ie_len; | |
443 | ev->cr.resp_ie_len = resp_ie_len; | |
444 | memcpy((void *)ev->cr.resp_ie, resp_ie, resp_ie_len); | |
445 | ev->cr.status = status; | |
446 | ||
447 | spin_lock_irqsave(&wdev->event_lock, flags); | |
448 | list_add_tail(&ev->list, &wdev->event_list); | |
449 | spin_unlock_irqrestore(&wdev->event_lock, flags); | |
450 | schedule_work(&rdev->event_work); | |
f2129354 | 451 | } |
b23aa676 SO |
452 | EXPORT_SYMBOL(cfg80211_connect_result); |
453 | ||
667503dd JB |
454 | void __cfg80211_roamed(struct wireless_dev *wdev, const u8 *bssid, |
455 | const u8 *req_ie, size_t req_ie_len, | |
456 | const u8 *resp_ie, size_t resp_ie_len) | |
b23aa676 | 457 | { |
b23aa676 SO |
458 | struct cfg80211_bss *bss; |
459 | #ifdef CONFIG_WIRELESS_EXT | |
460 | union iwreq_data wrqu; | |
461 | #endif | |
462 | ||
667503dd JB |
463 | ASSERT_WDEV_LOCK(wdev); |
464 | ||
b23aa676 SO |
465 | if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION)) |
466 | return; | |
467 | ||
468 | if (WARN_ON(wdev->sme_state != CFG80211_SME_CONNECTED)) | |
469 | return; | |
470 | ||
471 | /* internal error -- how did we get to CONNECTED w/o BSS? */ | |
472 | if (WARN_ON(!wdev->current_bss)) { | |
473 | return; | |
474 | } | |
475 | ||
476 | cfg80211_unhold_bss(wdev->current_bss); | |
19957bb3 | 477 | cfg80211_put_bss(&wdev->current_bss->pub); |
b23aa676 SO |
478 | wdev->current_bss = NULL; |
479 | ||
480 | bss = cfg80211_get_bss(wdev->wiphy, NULL, bssid, | |
481 | wdev->ssid, wdev->ssid_len, | |
482 | WLAN_CAPABILITY_ESS, WLAN_CAPABILITY_ESS); | |
483 | ||
484 | if (WARN_ON(!bss)) | |
485 | return; | |
486 | ||
19957bb3 JB |
487 | cfg80211_hold_bss(bss_from_pub(bss)); |
488 | wdev->current_bss = bss_from_pub(bss); | |
b23aa676 | 489 | |
667503dd JB |
490 | nl80211_send_roamed(wiphy_to_dev(wdev->wiphy), wdev->netdev, bssid, |
491 | req_ie, req_ie_len, resp_ie, resp_ie_len, | |
492 | GFP_KERNEL); | |
b23aa676 SO |
493 | |
494 | #ifdef CONFIG_WIRELESS_EXT | |
495 | if (req_ie) { | |
496 | memset(&wrqu, 0, sizeof(wrqu)); | |
497 | wrqu.data.length = req_ie_len; | |
3409ff77 | 498 | wireless_send_event(wdev->netdev, IWEVASSOCREQIE, |
667503dd | 499 | &wrqu, req_ie); |
b23aa676 SO |
500 | } |
501 | ||
502 | if (resp_ie) { | |
503 | memset(&wrqu, 0, sizeof(wrqu)); | |
504 | wrqu.data.length = resp_ie_len; | |
667503dd JB |
505 | wireless_send_event(wdev->netdev, IWEVASSOCRESPIE, |
506 | &wrqu, resp_ie); | |
b23aa676 SO |
507 | } |
508 | ||
509 | memset(&wrqu, 0, sizeof(wrqu)); | |
510 | wrqu.ap_addr.sa_family = ARPHRD_ETHER; | |
511 | memcpy(wrqu.ap_addr.sa_data, bssid, ETH_ALEN); | |
667503dd | 512 | wireless_send_event(wdev->netdev, SIOCGIWAP, &wrqu, NULL); |
b23aa676 SO |
513 | #endif |
514 | } | |
667503dd JB |
515 | |
516 | void cfg80211_roamed(struct net_device *dev, const u8 *bssid, | |
517 | const u8 *req_ie, size_t req_ie_len, | |
518 | const u8 *resp_ie, size_t resp_ie_len, gfp_t gfp) | |
519 | { | |
520 | struct wireless_dev *wdev = dev->ieee80211_ptr; | |
521 | struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy); | |
522 | struct cfg80211_event *ev; | |
523 | unsigned long flags; | |
524 | ||
525 | ev = kzalloc(sizeof(*ev) + req_ie_len + resp_ie_len, gfp); | |
526 | if (!ev) | |
527 | return; | |
528 | ||
529 | ev->type = EVENT_ROAMED; | |
530 | memcpy(ev->rm.bssid, bssid, ETH_ALEN); | |
531 | ev->rm.req_ie = ((u8 *)ev) + sizeof(*ev); | |
532 | ev->rm.req_ie_len = req_ie_len; | |
533 | memcpy((void *)ev->rm.req_ie, req_ie, req_ie_len); | |
534 | ev->rm.resp_ie = ((u8 *)ev) + sizeof(*ev) + req_ie_len; | |
535 | ev->rm.resp_ie_len = resp_ie_len; | |
536 | memcpy((void *)ev->rm.resp_ie, resp_ie, resp_ie_len); | |
537 | ||
538 | spin_lock_irqsave(&wdev->event_lock, flags); | |
539 | list_add_tail(&ev->list, &wdev->event_list); | |
540 | spin_unlock_irqrestore(&wdev->event_lock, flags); | |
541 | schedule_work(&rdev->event_work); | |
542 | } | |
b23aa676 SO |
543 | EXPORT_SYMBOL(cfg80211_roamed); |
544 | ||
667503dd | 545 | void __cfg80211_disconnected(struct net_device *dev, const u8 *ie, |
6829c878 | 546 | size_t ie_len, u16 reason, bool from_ap) |
b23aa676 SO |
547 | { |
548 | struct wireless_dev *wdev = dev->ieee80211_ptr; | |
fffd0934 JB |
549 | struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy); |
550 | int i; | |
b23aa676 SO |
551 | #ifdef CONFIG_WIRELESS_EXT |
552 | union iwreq_data wrqu; | |
553 | #endif | |
554 | ||
667503dd JB |
555 | ASSERT_WDEV_LOCK(wdev); |
556 | ||
b23aa676 SO |
557 | if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION)) |
558 | return; | |
559 | ||
560 | if (WARN_ON(wdev->sme_state != CFG80211_SME_CONNECTED)) | |
561 | return; | |
562 | ||
563 | if (wdev->current_bss) { | |
564 | cfg80211_unhold_bss(wdev->current_bss); | |
19957bb3 | 565 | cfg80211_put_bss(&wdev->current_bss->pub); |
b23aa676 SO |
566 | } |
567 | ||
568 | wdev->current_bss = NULL; | |
569 | wdev->sme_state = CFG80211_SME_IDLE; | |
8dadadb7 | 570 | wdev->ssid_len = 0; |
b23aa676 | 571 | |
6829c878 JB |
572 | if (wdev->conn) { |
573 | kfree(wdev->conn->ie); | |
574 | wdev->conn->ie = NULL; | |
19957bb3 JB |
575 | kfree(wdev->conn); |
576 | wdev->conn = NULL; | |
6829c878 JB |
577 | } |
578 | ||
fffd0934 JB |
579 | nl80211_send_disconnected(rdev, dev, reason, ie, ie_len, from_ap); |
580 | ||
581 | /* | |
582 | * Delete all the keys ... pairwise keys can't really | |
583 | * exist any more anyway, but default keys might. | |
584 | */ | |
585 | if (rdev->ops->del_key) | |
586 | for (i = 0; i < 6; i++) | |
587 | rdev->ops->del_key(wdev->wiphy, dev, i, NULL); | |
b23aa676 SO |
588 | |
589 | #ifdef CONFIG_WIRELESS_EXT | |
590 | memset(&wrqu, 0, sizeof(wrqu)); | |
591 | wrqu.ap_addr.sa_family = ARPHRD_ETHER; | |
592 | wireless_send_event(dev, SIOCGIWAP, &wrqu, NULL); | |
593 | #endif | |
594 | } | |
595 | ||
596 | void cfg80211_disconnected(struct net_device *dev, u16 reason, | |
597 | u8 *ie, size_t ie_len, gfp_t gfp) | |
598 | { | |
667503dd JB |
599 | struct wireless_dev *wdev = dev->ieee80211_ptr; |
600 | struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy); | |
601 | struct cfg80211_event *ev; | |
602 | unsigned long flags; | |
603 | ||
604 | ev = kzalloc(sizeof(*ev) + ie_len, gfp); | |
605 | if (!ev) | |
606 | return; | |
607 | ||
608 | ev->type = EVENT_DISCONNECTED; | |
609 | ev->dc.ie = ((u8 *)ev) + sizeof(*ev); | |
610 | ev->dc.ie_len = ie_len; | |
611 | memcpy((void *)ev->dc.ie, ie, ie_len); | |
612 | ev->dc.reason = reason; | |
613 | ||
614 | spin_lock_irqsave(&wdev->event_lock, flags); | |
615 | list_add_tail(&ev->list, &wdev->event_list); | |
616 | spin_unlock_irqrestore(&wdev->event_lock, flags); | |
617 | schedule_work(&rdev->event_work); | |
b23aa676 SO |
618 | } |
619 | EXPORT_SYMBOL(cfg80211_disconnected); | |
620 | ||
667503dd JB |
621 | int __cfg80211_connect(struct cfg80211_registered_device *rdev, |
622 | struct net_device *dev, | |
fffd0934 JB |
623 | struct cfg80211_connect_params *connect, |
624 | struct cfg80211_cached_keys *connkeys) | |
b23aa676 | 625 | { |
b23aa676 | 626 | struct wireless_dev *wdev = dev->ieee80211_ptr; |
667503dd JB |
627 | int err; |
628 | ||
629 | ASSERT_WDEV_LOCK(wdev); | |
b23aa676 SO |
630 | |
631 | if (wdev->sme_state != CFG80211_SME_IDLE) | |
632 | return -EALREADY; | |
633 | ||
fffd0934 JB |
634 | if (WARN_ON(wdev->connect_keys)) { |
635 | kfree(wdev->connect_keys); | |
636 | wdev->connect_keys = NULL; | |
637 | } | |
638 | ||
639 | if (connkeys && connkeys->def >= 0) { | |
640 | int idx; | |
641 | ||
642 | idx = connkeys->def; | |
643 | /* If given a WEP key we may need it for shared key auth */ | |
644 | if (connkeys->params[idx].cipher == WLAN_CIPHER_SUITE_WEP40 || | |
645 | connkeys->params[idx].cipher == WLAN_CIPHER_SUITE_WEP104) { | |
646 | connect->key_idx = idx; | |
647 | connect->key = connkeys->params[idx].key; | |
648 | connect->key_len = connkeys->params[idx].key_len; | |
649 | } | |
650 | } | |
651 | ||
b23aa676 | 652 | if (!rdev->ops->connect) { |
6829c878 JB |
653 | if (!rdev->ops->auth || !rdev->ops->assoc) |
654 | return -EOPNOTSUPP; | |
655 | ||
19957bb3 JB |
656 | if (WARN_ON(wdev->conn)) |
657 | return -EINPROGRESS; | |
658 | ||
659 | wdev->conn = kzalloc(sizeof(*wdev->conn), GFP_KERNEL); | |
660 | if (!wdev->conn) | |
661 | return -ENOMEM; | |
6829c878 JB |
662 | |
663 | /* | |
664 | * Copy all parameters, and treat explicitly IEs, BSSID, SSID. | |
665 | */ | |
666 | memcpy(&wdev->conn->params, connect, sizeof(*connect)); | |
667 | if (connect->bssid) { | |
668 | wdev->conn->params.bssid = wdev->conn->bssid; | |
669 | memcpy(wdev->conn->bssid, connect->bssid, ETH_ALEN); | |
670 | } | |
671 | ||
672 | if (connect->ie) { | |
673 | wdev->conn->ie = kmemdup(connect->ie, connect->ie_len, | |
674 | GFP_KERNEL); | |
675 | wdev->conn->params.ie = wdev->conn->ie; | |
19957bb3 JB |
676 | if (!wdev->conn->ie) { |
677 | kfree(wdev->conn); | |
678 | wdev->conn = NULL; | |
6829c878 | 679 | return -ENOMEM; |
19957bb3 | 680 | } |
6829c878 JB |
681 | } |
682 | ||
683 | if (connect->auth_type == NL80211_AUTHTYPE_AUTOMATIC) { | |
684 | wdev->conn->auto_auth = true; | |
685 | /* start with open system ... should mostly work */ | |
686 | wdev->conn->params.auth_type = | |
687 | NL80211_AUTHTYPE_OPEN_SYSTEM; | |
688 | } else { | |
689 | wdev->conn->auto_auth = false; | |
690 | } | |
691 | ||
692 | memcpy(wdev->ssid, connect->ssid, connect->ssid_len); | |
693 | wdev->ssid_len = connect->ssid_len; | |
694 | wdev->conn->params.ssid = wdev->ssid; | |
695 | wdev->conn->params.ssid_len = connect->ssid_len; | |
696 | ||
697 | /* don't care about result -- but fill bssid & channel */ | |
698 | if (!wdev->conn->params.bssid || !wdev->conn->params.channel) | |
699 | cfg80211_get_conn_bss(wdev); | |
700 | ||
701 | wdev->sme_state = CFG80211_SME_CONNECTING; | |
fffd0934 | 702 | wdev->connect_keys = connkeys; |
6829c878 JB |
703 | |
704 | /* we're good if we have both BSSID and channel */ | |
705 | if (wdev->conn->params.bssid && wdev->conn->params.channel) { | |
706 | wdev->conn->state = CFG80211_CONN_AUTHENTICATE_NEXT; | |
707 | err = cfg80211_conn_do_work(wdev); | |
708 | } else { | |
709 | /* otherwise we'll need to scan for the AP first */ | |
710 | err = cfg80211_conn_scan(wdev); | |
711 | /* | |
712 | * If we can't scan right now, then we need to scan again | |
713 | * after the current scan finished, since the parameters | |
714 | * changed (unless we find a good AP anyway). | |
715 | */ | |
716 | if (err == -EBUSY) { | |
717 | err = 0; | |
718 | wdev->conn->state = CFG80211_CONN_SCAN_AGAIN; | |
719 | } | |
720 | } | |
19957bb3 JB |
721 | if (err) { |
722 | kfree(wdev->conn); | |
723 | wdev->conn = NULL; | |
6829c878 | 724 | wdev->sme_state = CFG80211_SME_IDLE; |
fffd0934 | 725 | wdev->connect_keys = NULL; |
8dadadb7 | 726 | wdev->ssid_len = 0; |
19957bb3 | 727 | } |
6829c878 JB |
728 | |
729 | return err; | |
b23aa676 SO |
730 | } else { |
731 | wdev->sme_state = CFG80211_SME_CONNECTING; | |
fffd0934 | 732 | wdev->connect_keys = connkeys; |
b23aa676 SO |
733 | err = rdev->ops->connect(&rdev->wiphy, dev, connect); |
734 | if (err) { | |
fffd0934 | 735 | wdev->connect_keys = NULL; |
b23aa676 SO |
736 | wdev->sme_state = CFG80211_SME_IDLE; |
737 | return err; | |
738 | } | |
b23aa676 | 739 | |
6829c878 JB |
740 | memcpy(wdev->ssid, connect->ssid, connect->ssid_len); |
741 | wdev->ssid_len = connect->ssid_len; | |
b23aa676 | 742 | |
6829c878 JB |
743 | return 0; |
744 | } | |
b23aa676 SO |
745 | } |
746 | ||
667503dd JB |
747 | int cfg80211_connect(struct cfg80211_registered_device *rdev, |
748 | struct net_device *dev, | |
fffd0934 JB |
749 | struct cfg80211_connect_params *connect, |
750 | struct cfg80211_cached_keys *connkeys) | |
667503dd JB |
751 | { |
752 | int err; | |
753 | ||
754 | wdev_lock(dev->ieee80211_ptr); | |
fffd0934 | 755 | err = __cfg80211_connect(rdev, dev, connect, connkeys); |
667503dd JB |
756 | wdev_unlock(dev->ieee80211_ptr); |
757 | ||
758 | return err; | |
759 | } | |
760 | ||
761 | int __cfg80211_disconnect(struct cfg80211_registered_device *rdev, | |
762 | struct net_device *dev, u16 reason, bool wextev) | |
b23aa676 | 763 | { |
6829c878 | 764 | struct wireless_dev *wdev = dev->ieee80211_ptr; |
b23aa676 SO |
765 | int err; |
766 | ||
667503dd JB |
767 | ASSERT_WDEV_LOCK(wdev); |
768 | ||
6829c878 JB |
769 | if (wdev->sme_state == CFG80211_SME_IDLE) |
770 | return -EINVAL; | |
771 | ||
fffd0934 JB |
772 | kfree(wdev->connect_keys); |
773 | wdev->connect_keys = NULL; | |
774 | ||
b23aa676 | 775 | if (!rdev->ops->disconnect) { |
19957bb3 JB |
776 | if (!rdev->ops->deauth) |
777 | return -EOPNOTSUPP; | |
6829c878 | 778 | |
19957bb3 JB |
779 | /* was it connected by userspace SME? */ |
780 | if (!wdev->conn) { | |
781 | cfg80211_mlme_down(rdev, dev); | |
782 | return 0; | |
783 | } | |
6829c878 JB |
784 | |
785 | if (wdev->sme_state == CFG80211_SME_CONNECTING && | |
786 | (wdev->conn->state == CFG80211_CONN_SCANNING || | |
787 | wdev->conn->state == CFG80211_CONN_SCAN_AGAIN)) { | |
788 | wdev->sme_state = CFG80211_SME_IDLE; | |
19957bb3 JB |
789 | kfree(wdev->conn); |
790 | wdev->conn = NULL; | |
8dadadb7 | 791 | wdev->ssid_len = 0; |
6829c878 JB |
792 | return 0; |
793 | } | |
794 | ||
6829c878 | 795 | /* wdev->conn->params.bssid must be set if > SCANNING */ |
667503dd JB |
796 | err = __cfg80211_mlme_deauth(rdev, dev, |
797 | wdev->conn->params.bssid, | |
798 | NULL, 0, reason); | |
6829c878 JB |
799 | if (err) |
800 | return err; | |
b23aa676 SO |
801 | } else { |
802 | err = rdev->ops->disconnect(&rdev->wiphy, dev, reason); | |
803 | if (err) | |
804 | return err; | |
805 | } | |
806 | ||
6829c878 | 807 | if (wdev->sme_state == CFG80211_SME_CONNECTED) |
667503dd | 808 | __cfg80211_disconnected(dev, NULL, 0, 0, false); |
6829c878 | 809 | else if (wdev->sme_state == CFG80211_SME_CONNECTING) |
f2129354 JB |
810 | __cfg80211_connect_result(dev, NULL, NULL, 0, NULL, 0, |
811 | WLAN_STATUS_UNSPECIFIED_FAILURE, | |
df7fc0f9 | 812 | wextev, NULL); |
b23aa676 SO |
813 | |
814 | return 0; | |
815 | } | |
19957bb3 | 816 | |
667503dd JB |
817 | int cfg80211_disconnect(struct cfg80211_registered_device *rdev, |
818 | struct net_device *dev, | |
819 | u16 reason, bool wextev) | |
820 | { | |
821 | int err; | |
822 | ||
823 | wdev_lock(dev->ieee80211_ptr); | |
824 | err = __cfg80211_disconnect(rdev, dev, reason, wextev); | |
825 | wdev_unlock(dev->ieee80211_ptr); | |
826 | ||
827 | return err; | |
828 | } | |
829 | ||
19957bb3 JB |
830 | void cfg80211_sme_disassoc(struct net_device *dev, int idx) |
831 | { | |
832 | struct wireless_dev *wdev = dev->ieee80211_ptr; | |
833 | struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy); | |
834 | u8 bssid[ETH_ALEN]; | |
835 | ||
667503dd JB |
836 | ASSERT_WDEV_LOCK(wdev); |
837 | ||
19957bb3 JB |
838 | if (!wdev->conn) |
839 | return; | |
840 | ||
841 | if (wdev->conn->state == CFG80211_CONN_IDLE) | |
842 | return; | |
843 | ||
844 | /* | |
845 | * Ok, so the association was made by this SME -- we don't | |
846 | * want it any more so deauthenticate too. | |
847 | */ | |
848 | ||
849 | if (!wdev->auth_bsses[idx]) | |
850 | return; | |
851 | ||
852 | memcpy(bssid, wdev->auth_bsses[idx]->pub.bssid, ETH_ALEN); | |
ec3f1490 JB |
853 | if (__cfg80211_mlme_deauth(rdev, dev, bssid, |
854 | NULL, 0, WLAN_REASON_DEAUTH_LEAVING)) { | |
19957bb3 JB |
855 | /* whatever -- assume gone anyway */ |
856 | cfg80211_unhold_bss(wdev->auth_bsses[idx]); | |
857 | cfg80211_put_bss(&wdev->auth_bsses[idx]->pub); | |
858 | wdev->auth_bsses[idx] = NULL; | |
859 | } | |
860 | } |