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