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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" | |
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 | ||
59bbb6f7 | 259 | mutex_lock(&wiphy_to_dev(wdev->wiphy)->devlist_mtx); |
667503dd JB |
260 | wdev_lock(wdev); |
261 | __cfg80211_sme_scan_done(dev); | |
262 | wdev_unlock(wdev); | |
59bbb6f7 | 263 | mutex_unlock(&wiphy_to_dev(wdev->wiphy)->devlist_mtx); |
667503dd JB |
264 | } |
265 | ||
266 | void cfg80211_sme_rx_auth(struct net_device *dev, | |
267 | const u8 *buf, size_t len) | |
6829c878 JB |
268 | { |
269 | struct wireless_dev *wdev = dev->ieee80211_ptr; | |
270 | struct wiphy *wiphy = wdev->wiphy; | |
271 | struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); | |
272 | struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)buf; | |
273 | u16 status_code = le16_to_cpu(mgmt->u.auth.status_code); | |
274 | ||
667503dd JB |
275 | ASSERT_WDEV_LOCK(wdev); |
276 | ||
6829c878 JB |
277 | /* should only RX auth frames when connecting */ |
278 | if (wdev->sme_state != CFG80211_SME_CONNECTING) | |
279 | return; | |
280 | ||
281 | if (WARN_ON(!wdev->conn)) | |
282 | return; | |
283 | ||
284 | if (status_code == WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG && | |
285 | wdev->conn->auto_auth && | |
286 | wdev->conn->params.auth_type != NL80211_AUTHTYPE_NETWORK_EAP) { | |
287 | /* select automatically between only open, shared, leap */ | |
288 | switch (wdev->conn->params.auth_type) { | |
289 | case NL80211_AUTHTYPE_OPEN_SYSTEM: | |
fffd0934 JB |
290 | if (wdev->connect_keys) |
291 | wdev->conn->params.auth_type = | |
292 | NL80211_AUTHTYPE_SHARED_KEY; | |
293 | else | |
294 | wdev->conn->params.auth_type = | |
295 | NL80211_AUTHTYPE_NETWORK_EAP; | |
6829c878 JB |
296 | break; |
297 | case NL80211_AUTHTYPE_SHARED_KEY: | |
298 | wdev->conn->params.auth_type = | |
299 | NL80211_AUTHTYPE_NETWORK_EAP; | |
300 | break; | |
301 | default: | |
302 | /* huh? */ | |
303 | wdev->conn->params.auth_type = | |
304 | NL80211_AUTHTYPE_OPEN_SYSTEM; | |
305 | break; | |
306 | } | |
307 | wdev->conn->state = CFG80211_CONN_AUTHENTICATE_NEXT; | |
308 | schedule_work(&rdev->conn_work); | |
19957bb3 | 309 | } else if (status_code != WLAN_STATUS_SUCCESS) { |
4bde0f7d | 310 | __cfg80211_connect_result(dev, mgmt->bssid, NULL, 0, NULL, 0, |
df7fc0f9 | 311 | status_code, false, NULL); |
19957bb3 | 312 | } else if (wdev->sme_state == CFG80211_SME_CONNECTING && |
6829c878 JB |
313 | wdev->conn->state == CFG80211_CONN_AUTHENTICATING) { |
314 | wdev->conn->state = CFG80211_CONN_ASSOCIATE_NEXT; | |
315 | schedule_work(&rdev->conn_work); | |
316 | } | |
317 | } | |
b23aa676 | 318 | |
667503dd JB |
319 | void __cfg80211_connect_result(struct net_device *dev, const u8 *bssid, |
320 | const u8 *req_ie, size_t req_ie_len, | |
321 | const u8 *resp_ie, size_t resp_ie_len, | |
df7fc0f9 JB |
322 | u16 status, bool wextev, |
323 | struct cfg80211_bss *bss) | |
b23aa676 SO |
324 | { |
325 | struct wireless_dev *wdev = dev->ieee80211_ptr; | |
8b19e6ca | 326 | u8 *country_ie; |
b23aa676 SO |
327 | #ifdef CONFIG_WIRELESS_EXT |
328 | union iwreq_data wrqu; | |
329 | #endif | |
330 | ||
667503dd JB |
331 | ASSERT_WDEV_LOCK(wdev); |
332 | ||
b23aa676 SO |
333 | if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION)) |
334 | return; | |
335 | ||
e45cd82a JB |
336 | if (wdev->sme_state == CFG80211_SME_CONNECTED) |
337 | nl80211_send_roamed(wiphy_to_dev(wdev->wiphy), dev, | |
338 | bssid, req_ie, req_ie_len, | |
667503dd | 339 | resp_ie, resp_ie_len, GFP_KERNEL); |
e45cd82a JB |
340 | else |
341 | nl80211_send_connect_result(wiphy_to_dev(wdev->wiphy), dev, | |
342 | bssid, req_ie, req_ie_len, | |
343 | resp_ie, resp_ie_len, | |
667503dd | 344 | status, GFP_KERNEL); |
e45cd82a JB |
345 | |
346 | #ifdef CONFIG_WIRELESS_EXT | |
347 | if (wextev) { | |
348 | if (req_ie && status == WLAN_STATUS_SUCCESS) { | |
349 | memset(&wrqu, 0, sizeof(wrqu)); | |
350 | wrqu.data.length = req_ie_len; | |
3409ff77 | 351 | wireless_send_event(dev, IWEVASSOCREQIE, &wrqu, req_ie); |
e45cd82a JB |
352 | } |
353 | ||
354 | if (resp_ie && status == WLAN_STATUS_SUCCESS) { | |
355 | memset(&wrqu, 0, sizeof(wrqu)); | |
356 | wrqu.data.length = resp_ie_len; | |
357 | wireless_send_event(dev, IWEVASSOCRESPIE, &wrqu, resp_ie); | |
358 | } | |
359 | ||
360 | memset(&wrqu, 0, sizeof(wrqu)); | |
361 | wrqu.ap_addr.sa_family = ARPHRD_ETHER; | |
362 | if (bssid && status == WLAN_STATUS_SUCCESS) | |
363 | memcpy(wrqu.ap_addr.sa_data, bssid, ETH_ALEN); | |
364 | wireless_send_event(dev, SIOCGIWAP, &wrqu, NULL); | |
365 | } | |
366 | #endif | |
367 | ||
df7fc0f9 JB |
368 | if (wdev->current_bss) { |
369 | cfg80211_unhold_bss(wdev->current_bss); | |
370 | cfg80211_put_bss(&wdev->current_bss->pub); | |
371 | wdev->current_bss = NULL; | |
372 | } | |
373 | ||
e45cd82a | 374 | if (status == WLAN_STATUS_SUCCESS && |
fffd0934 JB |
375 | wdev->sme_state == CFG80211_SME_IDLE) |
376 | goto success; | |
e45cd82a | 377 | |
6829c878 | 378 | if (wdev->sme_state != CFG80211_SME_CONNECTING) |
b23aa676 SO |
379 | return; |
380 | ||
19957bb3 JB |
381 | if (wdev->conn) |
382 | wdev->conn->state = CFG80211_CONN_IDLE; | |
383 | ||
fffd0934 | 384 | if (status != WLAN_STATUS_SUCCESS) { |
b23aa676 | 385 | wdev->sme_state = CFG80211_SME_IDLE; |
19957bb3 JB |
386 | kfree(wdev->conn); |
387 | wdev->conn = NULL; | |
fffd0934 JB |
388 | kfree(wdev->connect_keys); |
389 | wdev->connect_keys = NULL; | |
8dadadb7 | 390 | wdev->ssid_len = 0; |
fffd0934 | 391 | return; |
b23aa676 | 392 | } |
fffd0934 | 393 | |
df7fc0f9 JB |
394 | success: |
395 | if (!bss) | |
396 | bss = cfg80211_get_bss(wdev->wiphy, NULL, bssid, | |
397 | wdev->ssid, wdev->ssid_len, | |
398 | WLAN_CAPABILITY_ESS, | |
399 | WLAN_CAPABILITY_ESS); | |
fffd0934 JB |
400 | |
401 | if (WARN_ON(!bss)) | |
402 | return; | |
403 | ||
404 | cfg80211_hold_bss(bss_from_pub(bss)); | |
405 | wdev->current_bss = bss_from_pub(bss); | |
406 | ||
fffd0934 JB |
407 | wdev->sme_state = CFG80211_SME_CONNECTED; |
408 | cfg80211_upload_connect_keys(wdev); | |
8b19e6ca LR |
409 | |
410 | country_ie = (u8 *) ieee80211_bss_get_ie(bss, WLAN_EID_COUNTRY); | |
411 | ||
412 | if (!country_ie) | |
413 | return; | |
414 | ||
415 | /* | |
416 | * ieee80211_bss_get_ie() ensures we can access: | |
417 | * - country_ie + 2, the start of the country ie data, and | |
418 | * - and country_ie[1] which is the IE length | |
419 | */ | |
420 | regulatory_hint_11d(wdev->wiphy, | |
421 | country_ie + 2, | |
422 | country_ie[1]); | |
b23aa676 | 423 | } |
f2129354 JB |
424 | |
425 | void cfg80211_connect_result(struct net_device *dev, const u8 *bssid, | |
426 | const u8 *req_ie, size_t req_ie_len, | |
427 | const u8 *resp_ie, size_t resp_ie_len, | |
428 | u16 status, gfp_t gfp) | |
429 | { | |
667503dd JB |
430 | struct wireless_dev *wdev = dev->ieee80211_ptr; |
431 | struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy); | |
432 | struct cfg80211_event *ev; | |
433 | unsigned long flags; | |
434 | ||
435 | ev = kzalloc(sizeof(*ev) + req_ie_len + resp_ie_len, gfp); | |
436 | if (!ev) | |
437 | return; | |
438 | ||
439 | ev->type = EVENT_CONNECT_RESULT; | |
440 | memcpy(ev->cr.bssid, bssid, ETH_ALEN); | |
441 | ev->cr.req_ie = ((u8 *)ev) + sizeof(*ev); | |
442 | ev->cr.req_ie_len = req_ie_len; | |
443 | memcpy((void *)ev->cr.req_ie, req_ie, req_ie_len); | |
444 | ev->cr.resp_ie = ((u8 *)ev) + sizeof(*ev) + req_ie_len; | |
445 | ev->cr.resp_ie_len = resp_ie_len; | |
446 | memcpy((void *)ev->cr.resp_ie, resp_ie, resp_ie_len); | |
447 | ev->cr.status = status; | |
448 | ||
449 | spin_lock_irqsave(&wdev->event_lock, flags); | |
450 | list_add_tail(&ev->list, &wdev->event_list); | |
451 | spin_unlock_irqrestore(&wdev->event_lock, flags); | |
452 | schedule_work(&rdev->event_work); | |
f2129354 | 453 | } |
b23aa676 SO |
454 | EXPORT_SYMBOL(cfg80211_connect_result); |
455 | ||
667503dd JB |
456 | void __cfg80211_roamed(struct wireless_dev *wdev, const u8 *bssid, |
457 | const u8 *req_ie, size_t req_ie_len, | |
458 | const u8 *resp_ie, size_t resp_ie_len) | |
b23aa676 | 459 | { |
b23aa676 SO |
460 | struct cfg80211_bss *bss; |
461 | #ifdef CONFIG_WIRELESS_EXT | |
462 | union iwreq_data wrqu; | |
463 | #endif | |
464 | ||
667503dd JB |
465 | ASSERT_WDEV_LOCK(wdev); |
466 | ||
b23aa676 SO |
467 | if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION)) |
468 | return; | |
469 | ||
470 | if (WARN_ON(wdev->sme_state != CFG80211_SME_CONNECTED)) | |
471 | return; | |
472 | ||
473 | /* internal error -- how did we get to CONNECTED w/o BSS? */ | |
474 | if (WARN_ON(!wdev->current_bss)) { | |
475 | return; | |
476 | } | |
477 | ||
478 | cfg80211_unhold_bss(wdev->current_bss); | |
19957bb3 | 479 | cfg80211_put_bss(&wdev->current_bss->pub); |
b23aa676 SO |
480 | wdev->current_bss = NULL; |
481 | ||
482 | bss = cfg80211_get_bss(wdev->wiphy, NULL, bssid, | |
483 | wdev->ssid, wdev->ssid_len, | |
484 | WLAN_CAPABILITY_ESS, WLAN_CAPABILITY_ESS); | |
485 | ||
486 | if (WARN_ON(!bss)) | |
487 | return; | |
488 | ||
19957bb3 JB |
489 | cfg80211_hold_bss(bss_from_pub(bss)); |
490 | wdev->current_bss = bss_from_pub(bss); | |
b23aa676 | 491 | |
667503dd JB |
492 | nl80211_send_roamed(wiphy_to_dev(wdev->wiphy), wdev->netdev, bssid, |
493 | req_ie, req_ie_len, resp_ie, resp_ie_len, | |
494 | GFP_KERNEL); | |
b23aa676 SO |
495 | |
496 | #ifdef CONFIG_WIRELESS_EXT | |
497 | if (req_ie) { | |
498 | memset(&wrqu, 0, sizeof(wrqu)); | |
499 | wrqu.data.length = req_ie_len; | |
3409ff77 | 500 | wireless_send_event(wdev->netdev, IWEVASSOCREQIE, |
667503dd | 501 | &wrqu, req_ie); |
b23aa676 SO |
502 | } |
503 | ||
504 | if (resp_ie) { | |
505 | memset(&wrqu, 0, sizeof(wrqu)); | |
506 | wrqu.data.length = resp_ie_len; | |
667503dd JB |
507 | wireless_send_event(wdev->netdev, IWEVASSOCRESPIE, |
508 | &wrqu, resp_ie); | |
b23aa676 SO |
509 | } |
510 | ||
511 | memset(&wrqu, 0, sizeof(wrqu)); | |
512 | wrqu.ap_addr.sa_family = ARPHRD_ETHER; | |
513 | memcpy(wrqu.ap_addr.sa_data, bssid, ETH_ALEN); | |
667503dd | 514 | wireless_send_event(wdev->netdev, SIOCGIWAP, &wrqu, NULL); |
b23aa676 SO |
515 | #endif |
516 | } | |
667503dd JB |
517 | |
518 | void cfg80211_roamed(struct net_device *dev, const u8 *bssid, | |
519 | const u8 *req_ie, size_t req_ie_len, | |
520 | const u8 *resp_ie, size_t resp_ie_len, gfp_t gfp) | |
521 | { | |
522 | struct wireless_dev *wdev = dev->ieee80211_ptr; | |
523 | struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy); | |
524 | struct cfg80211_event *ev; | |
525 | unsigned long flags; | |
526 | ||
527 | ev = kzalloc(sizeof(*ev) + req_ie_len + resp_ie_len, gfp); | |
528 | if (!ev) | |
529 | return; | |
530 | ||
531 | ev->type = EVENT_ROAMED; | |
532 | memcpy(ev->rm.bssid, bssid, ETH_ALEN); | |
533 | ev->rm.req_ie = ((u8 *)ev) + sizeof(*ev); | |
534 | ev->rm.req_ie_len = req_ie_len; | |
535 | memcpy((void *)ev->rm.req_ie, req_ie, req_ie_len); | |
536 | ev->rm.resp_ie = ((u8 *)ev) + sizeof(*ev) + req_ie_len; | |
537 | ev->rm.resp_ie_len = resp_ie_len; | |
538 | memcpy((void *)ev->rm.resp_ie, resp_ie, resp_ie_len); | |
539 | ||
540 | spin_lock_irqsave(&wdev->event_lock, flags); | |
541 | list_add_tail(&ev->list, &wdev->event_list); | |
542 | spin_unlock_irqrestore(&wdev->event_lock, flags); | |
543 | schedule_work(&rdev->event_work); | |
544 | } | |
b23aa676 SO |
545 | EXPORT_SYMBOL(cfg80211_roamed); |
546 | ||
667503dd | 547 | void __cfg80211_disconnected(struct net_device *dev, const u8 *ie, |
6829c878 | 548 | size_t ie_len, u16 reason, bool from_ap) |
b23aa676 SO |
549 | { |
550 | struct wireless_dev *wdev = dev->ieee80211_ptr; | |
fffd0934 JB |
551 | struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy); |
552 | int i; | |
b23aa676 SO |
553 | #ifdef CONFIG_WIRELESS_EXT |
554 | union iwreq_data wrqu; | |
555 | #endif | |
556 | ||
667503dd JB |
557 | ASSERT_WDEV_LOCK(wdev); |
558 | ||
b23aa676 SO |
559 | if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION)) |
560 | return; | |
561 | ||
562 | if (WARN_ON(wdev->sme_state != CFG80211_SME_CONNECTED)) | |
563 | return; | |
564 | ||
565 | if (wdev->current_bss) { | |
566 | cfg80211_unhold_bss(wdev->current_bss); | |
19957bb3 | 567 | cfg80211_put_bss(&wdev->current_bss->pub); |
b23aa676 SO |
568 | } |
569 | ||
570 | wdev->current_bss = NULL; | |
571 | wdev->sme_state = CFG80211_SME_IDLE; | |
8dadadb7 | 572 | wdev->ssid_len = 0; |
b23aa676 | 573 | |
6829c878 | 574 | if (wdev->conn) { |
b6f0b639 JB |
575 | const u8 *bssid; |
576 | int ret; | |
577 | ||
6829c878 JB |
578 | kfree(wdev->conn->ie); |
579 | wdev->conn->ie = NULL; | |
19957bb3 JB |
580 | kfree(wdev->conn); |
581 | wdev->conn = NULL; | |
b6f0b639 JB |
582 | |
583 | /* | |
584 | * If this disconnect was due to a disassoc, we | |
585 | * we might still have an auth BSS around. For | |
586 | * the userspace SME that's currently expected, | |
587 | * but for the kernel SME (nl80211 CONNECT or | |
588 | * wireless extensions) we want to clear up all | |
589 | * state. | |
590 | */ | |
591 | for (i = 0; i < MAX_AUTH_BSSES; i++) { | |
592 | if (!wdev->auth_bsses[i]) | |
593 | continue; | |
594 | bssid = wdev->auth_bsses[i]->pub.bssid; | |
595 | ret = __cfg80211_mlme_deauth(rdev, dev, bssid, NULL, 0, | |
596 | WLAN_REASON_DEAUTH_LEAVING); | |
597 | WARN(ret, "deauth failed: %d\n", ret); | |
598 | } | |
6829c878 JB |
599 | } |
600 | ||
fffd0934 JB |
601 | nl80211_send_disconnected(rdev, dev, reason, ie, ie_len, from_ap); |
602 | ||
603 | /* | |
604 | * Delete all the keys ... pairwise keys can't really | |
605 | * exist any more anyway, but default keys might. | |
606 | */ | |
607 | if (rdev->ops->del_key) | |
608 | for (i = 0; i < 6; i++) | |
609 | rdev->ops->del_key(wdev->wiphy, dev, i, NULL); | |
b23aa676 SO |
610 | |
611 | #ifdef CONFIG_WIRELESS_EXT | |
612 | memset(&wrqu, 0, sizeof(wrqu)); | |
613 | wrqu.ap_addr.sa_family = ARPHRD_ETHER; | |
614 | wireless_send_event(dev, SIOCGIWAP, &wrqu, NULL); | |
615 | #endif | |
616 | } | |
617 | ||
618 | void cfg80211_disconnected(struct net_device *dev, u16 reason, | |
619 | u8 *ie, size_t ie_len, gfp_t gfp) | |
620 | { | |
667503dd JB |
621 | struct wireless_dev *wdev = dev->ieee80211_ptr; |
622 | struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy); | |
623 | struct cfg80211_event *ev; | |
624 | unsigned long flags; | |
625 | ||
626 | ev = kzalloc(sizeof(*ev) + ie_len, gfp); | |
627 | if (!ev) | |
628 | return; | |
629 | ||
630 | ev->type = EVENT_DISCONNECTED; | |
631 | ev->dc.ie = ((u8 *)ev) + sizeof(*ev); | |
632 | ev->dc.ie_len = ie_len; | |
633 | memcpy((void *)ev->dc.ie, ie, ie_len); | |
634 | ev->dc.reason = reason; | |
635 | ||
636 | spin_lock_irqsave(&wdev->event_lock, flags); | |
637 | list_add_tail(&ev->list, &wdev->event_list); | |
638 | spin_unlock_irqrestore(&wdev->event_lock, flags); | |
639 | schedule_work(&rdev->event_work); | |
b23aa676 SO |
640 | } |
641 | EXPORT_SYMBOL(cfg80211_disconnected); | |
642 | ||
667503dd JB |
643 | int __cfg80211_connect(struct cfg80211_registered_device *rdev, |
644 | struct net_device *dev, | |
fffd0934 JB |
645 | struct cfg80211_connect_params *connect, |
646 | struct cfg80211_cached_keys *connkeys) | |
b23aa676 | 647 | { |
b23aa676 | 648 | struct wireless_dev *wdev = dev->ieee80211_ptr; |
59bbb6f7 | 649 | struct ieee80211_channel *chan; |
667503dd JB |
650 | int err; |
651 | ||
652 | ASSERT_WDEV_LOCK(wdev); | |
b23aa676 SO |
653 | |
654 | if (wdev->sme_state != CFG80211_SME_IDLE) | |
655 | return -EALREADY; | |
656 | ||
59bbb6f7 JB |
657 | chan = rdev_fixed_channel(rdev, wdev); |
658 | if (chan && chan != connect->channel) | |
659 | return -EBUSY; | |
660 | ||
fffd0934 JB |
661 | if (WARN_ON(wdev->connect_keys)) { |
662 | kfree(wdev->connect_keys); | |
663 | wdev->connect_keys = NULL; | |
664 | } | |
665 | ||
666 | if (connkeys && connkeys->def >= 0) { | |
667 | int idx; | |
bcba8eae | 668 | u32 cipher; |
fffd0934 JB |
669 | |
670 | idx = connkeys->def; | |
bcba8eae | 671 | cipher = connkeys->params[idx].cipher; |
fffd0934 | 672 | /* If given a WEP key we may need it for shared key auth */ |
bcba8eae SO |
673 | if (cipher == WLAN_CIPHER_SUITE_WEP40 || |
674 | cipher == WLAN_CIPHER_SUITE_WEP104) { | |
fffd0934 JB |
675 | connect->key_idx = idx; |
676 | connect->key = connkeys->params[idx].key; | |
677 | connect->key_len = connkeys->params[idx].key_len; | |
bcba8eae SO |
678 | |
679 | /* | |
680 | * If ciphers are not set (e.g. when going through | |
681 | * iwconfig), we have to set them appropriately here. | |
682 | */ | |
683 | if (connect->crypto.cipher_group == 0) | |
684 | connect->crypto.cipher_group = cipher; | |
685 | ||
686 | if (connect->crypto.n_ciphers_pairwise == 0) { | |
687 | connect->crypto.n_ciphers_pairwise = 1; | |
688 | connect->crypto.ciphers_pairwise[0] = cipher; | |
689 | } | |
fffd0934 JB |
690 | } |
691 | } | |
692 | ||
b23aa676 | 693 | if (!rdev->ops->connect) { |
6829c878 JB |
694 | if (!rdev->ops->auth || !rdev->ops->assoc) |
695 | return -EOPNOTSUPP; | |
696 | ||
19957bb3 JB |
697 | if (WARN_ON(wdev->conn)) |
698 | return -EINPROGRESS; | |
699 | ||
700 | wdev->conn = kzalloc(sizeof(*wdev->conn), GFP_KERNEL); | |
701 | if (!wdev->conn) | |
702 | return -ENOMEM; | |
6829c878 JB |
703 | |
704 | /* | |
705 | * Copy all parameters, and treat explicitly IEs, BSSID, SSID. | |
706 | */ | |
707 | memcpy(&wdev->conn->params, connect, sizeof(*connect)); | |
708 | if (connect->bssid) { | |
709 | wdev->conn->params.bssid = wdev->conn->bssid; | |
710 | memcpy(wdev->conn->bssid, connect->bssid, ETH_ALEN); | |
711 | } | |
712 | ||
713 | if (connect->ie) { | |
714 | wdev->conn->ie = kmemdup(connect->ie, connect->ie_len, | |
715 | GFP_KERNEL); | |
716 | wdev->conn->params.ie = wdev->conn->ie; | |
19957bb3 JB |
717 | if (!wdev->conn->ie) { |
718 | kfree(wdev->conn); | |
719 | wdev->conn = NULL; | |
6829c878 | 720 | return -ENOMEM; |
19957bb3 | 721 | } |
6829c878 JB |
722 | } |
723 | ||
724 | if (connect->auth_type == NL80211_AUTHTYPE_AUTOMATIC) { | |
725 | wdev->conn->auto_auth = true; | |
726 | /* start with open system ... should mostly work */ | |
727 | wdev->conn->params.auth_type = | |
728 | NL80211_AUTHTYPE_OPEN_SYSTEM; | |
729 | } else { | |
730 | wdev->conn->auto_auth = false; | |
731 | } | |
732 | ||
733 | memcpy(wdev->ssid, connect->ssid, connect->ssid_len); | |
734 | wdev->ssid_len = connect->ssid_len; | |
735 | wdev->conn->params.ssid = wdev->ssid; | |
736 | wdev->conn->params.ssid_len = connect->ssid_len; | |
737 | ||
738 | /* don't care about result -- but fill bssid & channel */ | |
739 | if (!wdev->conn->params.bssid || !wdev->conn->params.channel) | |
740 | cfg80211_get_conn_bss(wdev); | |
741 | ||
742 | wdev->sme_state = CFG80211_SME_CONNECTING; | |
fffd0934 | 743 | wdev->connect_keys = connkeys; |
6829c878 JB |
744 | |
745 | /* we're good if we have both BSSID and channel */ | |
746 | if (wdev->conn->params.bssid && wdev->conn->params.channel) { | |
747 | wdev->conn->state = CFG80211_CONN_AUTHENTICATE_NEXT; | |
748 | err = cfg80211_conn_do_work(wdev); | |
749 | } else { | |
750 | /* otherwise we'll need to scan for the AP first */ | |
751 | err = cfg80211_conn_scan(wdev); | |
752 | /* | |
753 | * If we can't scan right now, then we need to scan again | |
754 | * after the current scan finished, since the parameters | |
755 | * changed (unless we find a good AP anyway). | |
756 | */ | |
757 | if (err == -EBUSY) { | |
758 | err = 0; | |
759 | wdev->conn->state = CFG80211_CONN_SCAN_AGAIN; | |
760 | } | |
761 | } | |
19957bb3 JB |
762 | if (err) { |
763 | kfree(wdev->conn); | |
764 | wdev->conn = NULL; | |
6829c878 | 765 | wdev->sme_state = CFG80211_SME_IDLE; |
fffd0934 | 766 | wdev->connect_keys = NULL; |
8dadadb7 | 767 | wdev->ssid_len = 0; |
19957bb3 | 768 | } |
6829c878 JB |
769 | |
770 | return err; | |
b23aa676 SO |
771 | } else { |
772 | wdev->sme_state = CFG80211_SME_CONNECTING; | |
fffd0934 | 773 | wdev->connect_keys = connkeys; |
b23aa676 SO |
774 | err = rdev->ops->connect(&rdev->wiphy, dev, connect); |
775 | if (err) { | |
fffd0934 | 776 | wdev->connect_keys = NULL; |
b23aa676 SO |
777 | wdev->sme_state = CFG80211_SME_IDLE; |
778 | return err; | |
779 | } | |
b23aa676 | 780 | |
6829c878 JB |
781 | memcpy(wdev->ssid, connect->ssid, connect->ssid_len); |
782 | wdev->ssid_len = connect->ssid_len; | |
b23aa676 | 783 | |
6829c878 JB |
784 | return 0; |
785 | } | |
b23aa676 SO |
786 | } |
787 | ||
667503dd JB |
788 | int cfg80211_connect(struct cfg80211_registered_device *rdev, |
789 | struct net_device *dev, | |
fffd0934 JB |
790 | struct cfg80211_connect_params *connect, |
791 | struct cfg80211_cached_keys *connkeys) | |
667503dd JB |
792 | { |
793 | int err; | |
794 | ||
59bbb6f7 | 795 | mutex_lock(&rdev->devlist_mtx); |
667503dd | 796 | wdev_lock(dev->ieee80211_ptr); |
fffd0934 | 797 | err = __cfg80211_connect(rdev, dev, connect, connkeys); |
667503dd | 798 | wdev_unlock(dev->ieee80211_ptr); |
59bbb6f7 | 799 | mutex_unlock(&rdev->devlist_mtx); |
667503dd JB |
800 | |
801 | return err; | |
802 | } | |
803 | ||
804 | int __cfg80211_disconnect(struct cfg80211_registered_device *rdev, | |
805 | struct net_device *dev, u16 reason, bool wextev) | |
b23aa676 | 806 | { |
6829c878 | 807 | struct wireless_dev *wdev = dev->ieee80211_ptr; |
b23aa676 SO |
808 | int err; |
809 | ||
667503dd JB |
810 | ASSERT_WDEV_LOCK(wdev); |
811 | ||
6829c878 JB |
812 | if (wdev->sme_state == CFG80211_SME_IDLE) |
813 | return -EINVAL; | |
814 | ||
fffd0934 JB |
815 | kfree(wdev->connect_keys); |
816 | wdev->connect_keys = NULL; | |
817 | ||
b23aa676 | 818 | if (!rdev->ops->disconnect) { |
19957bb3 JB |
819 | if (!rdev->ops->deauth) |
820 | return -EOPNOTSUPP; | |
6829c878 | 821 | |
19957bb3 JB |
822 | /* was it connected by userspace SME? */ |
823 | if (!wdev->conn) { | |
824 | cfg80211_mlme_down(rdev, dev); | |
825 | return 0; | |
826 | } | |
6829c878 JB |
827 | |
828 | if (wdev->sme_state == CFG80211_SME_CONNECTING && | |
829 | (wdev->conn->state == CFG80211_CONN_SCANNING || | |
830 | wdev->conn->state == CFG80211_CONN_SCAN_AGAIN)) { | |
831 | wdev->sme_state = CFG80211_SME_IDLE; | |
19957bb3 JB |
832 | kfree(wdev->conn); |
833 | wdev->conn = NULL; | |
8dadadb7 | 834 | wdev->ssid_len = 0; |
6829c878 JB |
835 | return 0; |
836 | } | |
837 | ||
6829c878 | 838 | /* wdev->conn->params.bssid must be set if > SCANNING */ |
667503dd JB |
839 | err = __cfg80211_mlme_deauth(rdev, dev, |
840 | wdev->conn->params.bssid, | |
841 | NULL, 0, reason); | |
6829c878 JB |
842 | if (err) |
843 | return err; | |
b23aa676 SO |
844 | } else { |
845 | err = rdev->ops->disconnect(&rdev->wiphy, dev, reason); | |
846 | if (err) | |
847 | return err; | |
848 | } | |
849 | ||
6829c878 | 850 | if (wdev->sme_state == CFG80211_SME_CONNECTED) |
667503dd | 851 | __cfg80211_disconnected(dev, NULL, 0, 0, false); |
6829c878 | 852 | else if (wdev->sme_state == CFG80211_SME_CONNECTING) |
f2129354 JB |
853 | __cfg80211_connect_result(dev, NULL, NULL, 0, NULL, 0, |
854 | WLAN_STATUS_UNSPECIFIED_FAILURE, | |
df7fc0f9 | 855 | wextev, NULL); |
b23aa676 SO |
856 | |
857 | return 0; | |
858 | } | |
19957bb3 | 859 | |
667503dd JB |
860 | int cfg80211_disconnect(struct cfg80211_registered_device *rdev, |
861 | struct net_device *dev, | |
862 | u16 reason, bool wextev) | |
863 | { | |
864 | int err; | |
865 | ||
866 | wdev_lock(dev->ieee80211_ptr); | |
867 | err = __cfg80211_disconnect(rdev, dev, reason, wextev); | |
868 | wdev_unlock(dev->ieee80211_ptr); | |
869 | ||
870 | return err; | |
871 | } | |
872 | ||
19957bb3 JB |
873 | void cfg80211_sme_disassoc(struct net_device *dev, int idx) |
874 | { | |
875 | struct wireless_dev *wdev = dev->ieee80211_ptr; | |
876 | struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy); | |
877 | u8 bssid[ETH_ALEN]; | |
878 | ||
667503dd JB |
879 | ASSERT_WDEV_LOCK(wdev); |
880 | ||
19957bb3 JB |
881 | if (!wdev->conn) |
882 | return; | |
883 | ||
884 | if (wdev->conn->state == CFG80211_CONN_IDLE) | |
885 | return; | |
886 | ||
887 | /* | |
888 | * Ok, so the association was made by this SME -- we don't | |
889 | * want it any more so deauthenticate too. | |
890 | */ | |
891 | ||
892 | if (!wdev->auth_bsses[idx]) | |
893 | return; | |
894 | ||
895 | memcpy(bssid, wdev->auth_bsses[idx]->pub.bssid, ETH_ALEN); | |
ec3f1490 JB |
896 | if (__cfg80211_mlme_deauth(rdev, dev, bssid, |
897 | NULL, 0, WLAN_REASON_DEAUTH_LEAVING)) { | |
19957bb3 JB |
898 | /* whatever -- assume gone anyway */ |
899 | cfg80211_unhold_bss(wdev->auth_bsses[idx]); | |
900 | cfg80211_put_bss(&wdev->auth_bsses[idx]->pub); | |
901 | wdev->auth_bsses[idx] = NULL; | |
902 | } | |
903 | } |