Commit | Line | Data |
---|---|---|
f2129354 JB |
1 | /* |
2 | * cfg80211 wext compat for managed mode. | |
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> | |
5a0e3ad6 | 10 | #include <linux/slab.h> |
f2129354 | 11 | #include <net/cfg80211.h> |
0e82ffe3 | 12 | #include "wext-compat.h" |
f2129354 JB |
13 | #include "nl80211.h" |
14 | ||
fffd0934 JB |
15 | int cfg80211_mgd_wext_connect(struct cfg80211_registered_device *rdev, |
16 | struct wireless_dev *wdev) | |
f2129354 | 17 | { |
fffd0934 | 18 | struct cfg80211_cached_keys *ck = NULL; |
f401a6f7 | 19 | const u8 *prev_bssid = NULL; |
fffd0934 | 20 | int err, i; |
f2129354 | 21 | |
667503dd JB |
22 | ASSERT_RDEV_LOCK(rdev); |
23 | ASSERT_WDEV_LOCK(wdev); | |
24 | ||
f2129354 JB |
25 | if (!netif_running(wdev->netdev)) |
26 | return 0; | |
27 | ||
28 | wdev->wext.connect.ie = wdev->wext.ie; | |
29 | wdev->wext.connect.ie_len = wdev->wext.ie_len; | |
f2129354 | 30 | |
fffd0934 JB |
31 | if (wdev->wext.keys) { |
32 | wdev->wext.keys->def = wdev->wext.default_key; | |
33 | wdev->wext.keys->defmgmt = wdev->wext.default_mgmt_key; | |
4be3bd8c JB |
34 | if (wdev->wext.default_key != -1) |
35 | wdev->wext.connect.privacy = true; | |
fffd0934 JB |
36 | } |
37 | ||
38 | if (!wdev->wext.connect.ssid_len) | |
39 | return 0; | |
40 | ||
41 | if (wdev->wext.keys) { | |
42 | ck = kmemdup(wdev->wext.keys, sizeof(*ck), GFP_KERNEL); | |
43 | if (!ck) | |
44 | return -ENOMEM; | |
45 | for (i = 0; i < 6; i++) | |
46 | ck->params[i].key = ck->data[i]; | |
47 | } | |
f401a6f7 JB |
48 | |
49 | if (wdev->wext.prev_bssid_valid) | |
50 | prev_bssid = wdev->wext.prev_bssid; | |
51 | ||
fffd0934 | 52 | err = __cfg80211_connect(rdev, wdev->netdev, |
f401a6f7 | 53 | &wdev->wext.connect, ck, prev_bssid); |
fffd0934 JB |
54 | if (err) |
55 | kfree(ck); | |
f2129354 JB |
56 | |
57 | return err; | |
58 | } | |
59 | ||
60 | int cfg80211_mgd_wext_siwfreq(struct net_device *dev, | |
61 | struct iw_request_info *info, | |
59bbb6f7 | 62 | struct iw_freq *wextfreq, char *extra) |
f2129354 JB |
63 | { |
64 | struct wireless_dev *wdev = dev->ieee80211_ptr; | |
65 | struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy); | |
59bbb6f7 JB |
66 | struct ieee80211_channel *chan = NULL; |
67 | int err, freq; | |
f2129354 JB |
68 | |
69 | /* call only for station! */ | |
70 | if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION)) | |
71 | return -EINVAL; | |
72 | ||
59bbb6f7 JB |
73 | freq = cfg80211_wext_freq(wdev->wiphy, wextfreq); |
74 | if (freq < 0) | |
75 | return freq; | |
f2129354 | 76 | |
59bbb6f7 JB |
77 | if (freq) { |
78 | chan = ieee80211_get_channel(wdev->wiphy, freq); | |
79 | if (!chan) | |
80 | return -EINVAL; | |
81 | if (chan->flags & IEEE80211_CHAN_DISABLED) | |
82 | return -EINVAL; | |
83 | } | |
f2129354 | 84 | |
667503dd | 85 | cfg80211_lock_rdev(rdev); |
59bbb6f7 | 86 | mutex_lock(&rdev->devlist_mtx); |
667503dd JB |
87 | wdev_lock(wdev); |
88 | ||
f2129354 JB |
89 | if (wdev->sme_state != CFG80211_SME_IDLE) { |
90 | bool event = true; | |
25e83c49 JB |
91 | |
92 | if (wdev->wext.connect.channel == chan) { | |
93 | err = 0; | |
94 | goto out; | |
95 | } | |
96 | ||
f2129354 JB |
97 | /* if SSID set, we'll try right again, avoid event */ |
98 | if (wdev->wext.connect.ssid_len) | |
99 | event = false; | |
59bbb6f7 JB |
100 | err = __cfg80211_disconnect(rdev, dev, |
101 | WLAN_REASON_DEAUTH_LEAVING, event); | |
f2129354 | 102 | if (err) |
667503dd | 103 | goto out; |
f2129354 JB |
104 | } |
105 | ||
667503dd | 106 | |
f2129354 JB |
107 | wdev->wext.connect.channel = chan; |
108 | ||
109 | /* SSID is not set, we just want to switch channel */ | |
59bbb6f7 | 110 | if (chan && !wdev->wext.connect.ssid_len) { |
f444de05 | 111 | err = cfg80211_set_freq(rdev, wdev, freq, NL80211_CHAN_NO_HT); |
667503dd | 112 | goto out; |
f2129354 JB |
113 | } |
114 | ||
59bbb6f7 | 115 | err = cfg80211_mgd_wext_connect(rdev, wdev); |
667503dd JB |
116 | out: |
117 | wdev_unlock(wdev); | |
59bbb6f7 | 118 | mutex_unlock(&rdev->devlist_mtx); |
667503dd JB |
119 | cfg80211_unlock_rdev(rdev); |
120 | return err; | |
f2129354 | 121 | } |
f2129354 JB |
122 | |
123 | int cfg80211_mgd_wext_giwfreq(struct net_device *dev, | |
124 | struct iw_request_info *info, | |
125 | struct iw_freq *freq, char *extra) | |
126 | { | |
127 | struct wireless_dev *wdev = dev->ieee80211_ptr; | |
128 | struct ieee80211_channel *chan = NULL; | |
129 | ||
130 | /* call only for station! */ | |
131 | if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION)) | |
132 | return -EINVAL; | |
133 | ||
667503dd | 134 | wdev_lock(wdev); |
f2129354 | 135 | if (wdev->current_bss) |
19957bb3 | 136 | chan = wdev->current_bss->pub.channel; |
f2129354 JB |
137 | else if (wdev->wext.connect.channel) |
138 | chan = wdev->wext.connect.channel; | |
667503dd | 139 | wdev_unlock(wdev); |
f2129354 JB |
140 | |
141 | if (chan) { | |
142 | freq->m = chan->center_freq; | |
143 | freq->e = 6; | |
144 | return 0; | |
145 | } | |
146 | ||
147 | /* no channel if not joining */ | |
148 | return -EINVAL; | |
149 | } | |
f2129354 JB |
150 | |
151 | int cfg80211_mgd_wext_siwessid(struct net_device *dev, | |
152 | struct iw_request_info *info, | |
153 | struct iw_point *data, char *ssid) | |
154 | { | |
155 | struct wireless_dev *wdev = dev->ieee80211_ptr; | |
59bbb6f7 | 156 | struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy); |
f2129354 JB |
157 | size_t len = data->length; |
158 | int err; | |
159 | ||
160 | /* call only for station! */ | |
161 | if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION)) | |
162 | return -EINVAL; | |
163 | ||
164 | if (!data->flags) | |
165 | len = 0; | |
166 | ||
167 | /* iwconfig uses nul termination in SSID.. */ | |
168 | if (len > 0 && ssid[len - 1] == '\0') | |
169 | len--; | |
170 | ||
59bbb6f7 JB |
171 | cfg80211_lock_rdev(rdev); |
172 | mutex_lock(&rdev->devlist_mtx); | |
667503dd JB |
173 | wdev_lock(wdev); |
174 | ||
175 | err = 0; | |
176 | ||
f2129354 JB |
177 | if (wdev->sme_state != CFG80211_SME_IDLE) { |
178 | bool event = true; | |
25e83c49 JB |
179 | |
180 | if (wdev->wext.connect.ssid && len && | |
181 | len == wdev->wext.connect.ssid_len && | |
182 | memcmp(wdev->wext.connect.ssid, ssid, len) == 0) | |
183 | goto out; | |
184 | ||
f2129354 JB |
185 | /* if SSID set now, we'll try to connect, avoid event */ |
186 | if (len) | |
187 | event = false; | |
59bbb6f7 JB |
188 | err = __cfg80211_disconnect(rdev, dev, |
189 | WLAN_REASON_DEAUTH_LEAVING, event); | |
f2129354 | 190 | if (err) |
667503dd | 191 | goto out; |
f2129354 JB |
192 | } |
193 | ||
f401a6f7 | 194 | wdev->wext.prev_bssid_valid = false; |
f2129354 JB |
195 | wdev->wext.connect.ssid = wdev->wext.ssid; |
196 | memcpy(wdev->wext.ssid, ssid, len); | |
197 | wdev->wext.connect.ssid_len = len; | |
198 | ||
199 | wdev->wext.connect.crypto.control_port = false; | |
c0692b8f JB |
200 | wdev->wext.connect.crypto.control_port_ethertype = |
201 | cpu_to_be16(ETH_P_PAE); | |
f2129354 | 202 | |
59bbb6f7 | 203 | err = cfg80211_mgd_wext_connect(rdev, wdev); |
667503dd JB |
204 | out: |
205 | wdev_unlock(wdev); | |
59bbb6f7 JB |
206 | mutex_unlock(&rdev->devlist_mtx); |
207 | cfg80211_unlock_rdev(rdev); | |
667503dd | 208 | return err; |
f2129354 | 209 | } |
f2129354 JB |
210 | |
211 | int cfg80211_mgd_wext_giwessid(struct net_device *dev, | |
212 | struct iw_request_info *info, | |
213 | struct iw_point *data, char *ssid) | |
214 | { | |
215 | struct wireless_dev *wdev = dev->ieee80211_ptr; | |
216 | ||
217 | /* call only for station! */ | |
218 | if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION)) | |
219 | return -EINVAL; | |
220 | ||
221 | data->flags = 0; | |
222 | ||
667503dd | 223 | wdev_lock(wdev); |
a42dd7ef ZY |
224 | if (wdev->current_bss) { |
225 | const u8 *ie = ieee80211_bss_get_ie(&wdev->current_bss->pub, | |
226 | WLAN_EID_SSID); | |
227 | if (ie) { | |
228 | data->flags = 1; | |
229 | data->length = ie[1]; | |
230 | memcpy(ssid, ie + 2, data->length); | |
231 | } | |
232 | } else if (wdev->wext.connect.ssid && wdev->wext.connect.ssid_len) { | |
f2129354 JB |
233 | data->flags = 1; |
234 | data->length = wdev->wext.connect.ssid_len; | |
235 | memcpy(ssid, wdev->wext.connect.ssid, data->length); | |
33de4f9d | 236 | } |
667503dd | 237 | wdev_unlock(wdev); |
f2129354 JB |
238 | |
239 | return 0; | |
240 | } | |
f2129354 JB |
241 | |
242 | int cfg80211_mgd_wext_siwap(struct net_device *dev, | |
243 | struct iw_request_info *info, | |
244 | struct sockaddr *ap_addr, char *extra) | |
245 | { | |
246 | struct wireless_dev *wdev = dev->ieee80211_ptr; | |
59bbb6f7 | 247 | struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy); |
f2129354 JB |
248 | u8 *bssid = ap_addr->sa_data; |
249 | int err; | |
250 | ||
251 | /* call only for station! */ | |
252 | if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION)) | |
253 | return -EINVAL; | |
254 | ||
255 | if (ap_addr->sa_family != ARPHRD_ETHER) | |
256 | return -EINVAL; | |
257 | ||
258 | /* automatic mode */ | |
259 | if (is_zero_ether_addr(bssid) || is_broadcast_ether_addr(bssid)) | |
260 | bssid = NULL; | |
261 | ||
59bbb6f7 JB |
262 | cfg80211_lock_rdev(rdev); |
263 | mutex_lock(&rdev->devlist_mtx); | |
667503dd JB |
264 | wdev_lock(wdev); |
265 | ||
25e83c49 JB |
266 | if (wdev->sme_state != CFG80211_SME_IDLE) { |
267 | err = 0; | |
268 | /* both automatic */ | |
269 | if (!bssid && !wdev->wext.connect.bssid) | |
270 | goto out; | |
f2129354 | 271 | |
25e83c49 JB |
272 | /* fixed already - and no change */ |
273 | if (wdev->wext.connect.bssid && bssid && | |
274 | compare_ether_addr(bssid, wdev->wext.connect.bssid) == 0) | |
275 | goto out; | |
f2129354 | 276 | |
59bbb6f7 JB |
277 | err = __cfg80211_disconnect(rdev, dev, |
278 | WLAN_REASON_DEAUTH_LEAVING, false); | |
f2129354 | 279 | if (err) |
667503dd | 280 | goto out; |
f2129354 JB |
281 | } |
282 | ||
283 | if (bssid) { | |
284 | memcpy(wdev->wext.bssid, bssid, ETH_ALEN); | |
285 | wdev->wext.connect.bssid = wdev->wext.bssid; | |
286 | } else | |
287 | wdev->wext.connect.bssid = NULL; | |
288 | ||
59bbb6f7 | 289 | err = cfg80211_mgd_wext_connect(rdev, wdev); |
667503dd JB |
290 | out: |
291 | wdev_unlock(wdev); | |
59bbb6f7 JB |
292 | mutex_unlock(&rdev->devlist_mtx); |
293 | cfg80211_unlock_rdev(rdev); | |
667503dd | 294 | return err; |
f2129354 | 295 | } |
f2129354 JB |
296 | |
297 | int cfg80211_mgd_wext_giwap(struct net_device *dev, | |
298 | struct iw_request_info *info, | |
299 | struct sockaddr *ap_addr, char *extra) | |
300 | { | |
301 | struct wireless_dev *wdev = dev->ieee80211_ptr; | |
302 | ||
303 | /* call only for station! */ | |
304 | if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION)) | |
305 | return -EINVAL; | |
306 | ||
307 | ap_addr->sa_family = ARPHRD_ETHER; | |
308 | ||
667503dd | 309 | wdev_lock(wdev); |
f2129354 | 310 | if (wdev->current_bss) |
19957bb3 | 311 | memcpy(ap_addr->sa_data, wdev->current_bss->pub.bssid, ETH_ALEN); |
f2129354 JB |
312 | else |
313 | memset(ap_addr->sa_data, 0, ETH_ALEN); | |
667503dd | 314 | wdev_unlock(wdev); |
f2129354 JB |
315 | |
316 | return 0; | |
317 | } | |
f2129354 JB |
318 | |
319 | int cfg80211_wext_siwgenie(struct net_device *dev, | |
320 | struct iw_request_info *info, | |
321 | struct iw_point *data, char *extra) | |
322 | { | |
323 | struct wireless_dev *wdev = dev->ieee80211_ptr; | |
324 | struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy); | |
325 | u8 *ie = extra; | |
326 | int ie_len = data->length, err; | |
327 | ||
328 | if (wdev->iftype != NL80211_IFTYPE_STATION) | |
329 | return -EOPNOTSUPP; | |
330 | ||
331 | if (!ie_len) | |
332 | ie = NULL; | |
333 | ||
667503dd JB |
334 | wdev_lock(wdev); |
335 | ||
f2129354 | 336 | /* no change */ |
667503dd | 337 | err = 0; |
f2129354 JB |
338 | if (wdev->wext.ie_len == ie_len && |
339 | memcmp(wdev->wext.ie, ie, ie_len) == 0) | |
667503dd | 340 | goto out; |
f2129354 JB |
341 | |
342 | if (ie_len) { | |
343 | ie = kmemdup(extra, ie_len, GFP_KERNEL); | |
667503dd JB |
344 | if (!ie) { |
345 | err = -ENOMEM; | |
346 | goto out; | |
347 | } | |
f2129354 JB |
348 | } else |
349 | ie = NULL; | |
350 | ||
351 | kfree(wdev->wext.ie); | |
352 | wdev->wext.ie = ie; | |
353 | wdev->wext.ie_len = ie_len; | |
354 | ||
355 | if (wdev->sme_state != CFG80211_SME_IDLE) { | |
667503dd JB |
356 | err = __cfg80211_disconnect(rdev, dev, |
357 | WLAN_REASON_DEAUTH_LEAVING, false); | |
f2129354 | 358 | if (err) |
667503dd | 359 | goto out; |
f2129354 JB |
360 | } |
361 | ||
362 | /* userspace better not think we'll reconnect */ | |
667503dd JB |
363 | err = 0; |
364 | out: | |
365 | wdev_unlock(wdev); | |
366 | return err; | |
f2129354 JB |
367 | } |
368 | EXPORT_SYMBOL_GPL(cfg80211_wext_siwgenie); | |
369 | ||
370 | int cfg80211_wext_siwmlme(struct net_device *dev, | |
371 | struct iw_request_info *info, | |
372 | struct iw_point *data, char *extra) | |
373 | { | |
374 | struct wireless_dev *wdev = dev->ieee80211_ptr; | |
375 | struct iw_mlme *mlme = (struct iw_mlme *)extra; | |
376 | struct cfg80211_registered_device *rdev; | |
667503dd | 377 | int err; |
f2129354 JB |
378 | |
379 | if (!wdev) | |
380 | return -EOPNOTSUPP; | |
381 | ||
382 | rdev = wiphy_to_dev(wdev->wiphy); | |
383 | ||
384 | if (wdev->iftype != NL80211_IFTYPE_STATION) | |
385 | return -EINVAL; | |
386 | ||
387 | if (mlme->addr.sa_family != ARPHRD_ETHER) | |
388 | return -EINVAL; | |
389 | ||
667503dd | 390 | wdev_lock(wdev); |
f2129354 JB |
391 | switch (mlme->cmd) { |
392 | case IW_MLME_DEAUTH: | |
393 | case IW_MLME_DISASSOC: | |
667503dd JB |
394 | err = __cfg80211_disconnect(rdev, dev, mlme->reason_code, |
395 | true); | |
396 | break; | |
f2129354 | 397 | default: |
667503dd JB |
398 | err = -EOPNOTSUPP; |
399 | break; | |
f2129354 | 400 | } |
667503dd JB |
401 | wdev_unlock(wdev); |
402 | ||
403 | return err; | |
f2129354 JB |
404 | } |
405 | EXPORT_SYMBOL_GPL(cfg80211_wext_siwmlme); |