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 | ||
bc3b2d7f | 8 | #include <linux/export.h> |
f2129354 JB |
9 | #include <linux/etherdevice.h> |
10 | #include <linux/if_arp.h> | |
5a0e3ad6 | 11 | #include <linux/slab.h> |
f2129354 | 12 | #include <net/cfg80211.h> |
262eb9b2 | 13 | #include <net/cfg80211-wext.h> |
0e82ffe3 | 14 | #include "wext-compat.h" |
f2129354 JB |
15 | #include "nl80211.h" |
16 | ||
fffd0934 JB |
17 | int cfg80211_mgd_wext_connect(struct cfg80211_registered_device *rdev, |
18 | struct wireless_dev *wdev) | |
f2129354 | 19 | { |
fffd0934 | 20 | struct cfg80211_cached_keys *ck = NULL; |
f401a6f7 | 21 | const u8 *prev_bssid = NULL; |
fffd0934 | 22 | int err, i; |
f2129354 | 23 | |
667503dd JB |
24 | ASSERT_RDEV_LOCK(rdev); |
25 | ASSERT_WDEV_LOCK(wdev); | |
26 | ||
f2129354 JB |
27 | if (!netif_running(wdev->netdev)) |
28 | return 0; | |
29 | ||
30 | wdev->wext.connect.ie = wdev->wext.ie; | |
31 | wdev->wext.connect.ie_len = wdev->wext.ie_len; | |
f2129354 | 32 | |
4486ea98 BS |
33 | /* Use default background scan period */ |
34 | wdev->wext.connect.bg_scan_period = -1; | |
35 | ||
fffd0934 JB |
36 | if (wdev->wext.keys) { |
37 | wdev->wext.keys->def = wdev->wext.default_key; | |
38 | wdev->wext.keys->defmgmt = wdev->wext.default_mgmt_key; | |
4be3bd8c JB |
39 | if (wdev->wext.default_key != -1) |
40 | wdev->wext.connect.privacy = true; | |
fffd0934 JB |
41 | } |
42 | ||
43 | if (!wdev->wext.connect.ssid_len) | |
44 | return 0; | |
45 | ||
46 | if (wdev->wext.keys) { | |
47 | ck = kmemdup(wdev->wext.keys, sizeof(*ck), GFP_KERNEL); | |
48 | if (!ck) | |
49 | return -ENOMEM; | |
50 | for (i = 0; i < 6; i++) | |
51 | ck->params[i].key = ck->data[i]; | |
52 | } | |
f401a6f7 JB |
53 | |
54 | if (wdev->wext.prev_bssid_valid) | |
55 | prev_bssid = wdev->wext.prev_bssid; | |
56 | ||
fffd0934 | 57 | err = __cfg80211_connect(rdev, wdev->netdev, |
f401a6f7 | 58 | &wdev->wext.connect, ck, prev_bssid); |
fffd0934 JB |
59 | if (err) |
60 | kfree(ck); | |
f2129354 JB |
61 | |
62 | return err; | |
63 | } | |
64 | ||
65 | int cfg80211_mgd_wext_siwfreq(struct net_device *dev, | |
66 | struct iw_request_info *info, | |
59bbb6f7 | 67 | struct iw_freq *wextfreq, char *extra) |
f2129354 JB |
68 | { |
69 | struct wireless_dev *wdev = dev->ieee80211_ptr; | |
70 | struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy); | |
59bbb6f7 JB |
71 | struct ieee80211_channel *chan = NULL; |
72 | int err, freq; | |
f2129354 JB |
73 | |
74 | /* call only for station! */ | |
75 | if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION)) | |
76 | return -EINVAL; | |
77 | ||
59bbb6f7 JB |
78 | freq = cfg80211_wext_freq(wdev->wiphy, wextfreq); |
79 | if (freq < 0) | |
80 | return freq; | |
f2129354 | 81 | |
59bbb6f7 JB |
82 | if (freq) { |
83 | chan = ieee80211_get_channel(wdev->wiphy, freq); | |
84 | if (!chan) | |
85 | return -EINVAL; | |
86 | if (chan->flags & IEEE80211_CHAN_DISABLED) | |
87 | return -EINVAL; | |
88 | } | |
f2129354 | 89 | |
667503dd | 90 | cfg80211_lock_rdev(rdev); |
59bbb6f7 | 91 | mutex_lock(&rdev->devlist_mtx); |
667503dd JB |
92 | wdev_lock(wdev); |
93 | ||
f2129354 JB |
94 | if (wdev->sme_state != CFG80211_SME_IDLE) { |
95 | bool event = true; | |
25e83c49 JB |
96 | |
97 | if (wdev->wext.connect.channel == chan) { | |
98 | err = 0; | |
99 | goto out; | |
100 | } | |
101 | ||
f2129354 JB |
102 | /* if SSID set, we'll try right again, avoid event */ |
103 | if (wdev->wext.connect.ssid_len) | |
104 | event = false; | |
59bbb6f7 JB |
105 | err = __cfg80211_disconnect(rdev, dev, |
106 | WLAN_REASON_DEAUTH_LEAVING, event); | |
f2129354 | 107 | if (err) |
667503dd | 108 | goto out; |
f2129354 JB |
109 | } |
110 | ||
667503dd | 111 | |
f2129354 JB |
112 | wdev->wext.connect.channel = chan; |
113 | ||
114 | /* SSID is not set, we just want to switch channel */ | |
59bbb6f7 | 115 | if (chan && !wdev->wext.connect.ssid_len) { |
f444de05 | 116 | err = cfg80211_set_freq(rdev, wdev, freq, NL80211_CHAN_NO_HT); |
667503dd | 117 | goto out; |
f2129354 JB |
118 | } |
119 | ||
59bbb6f7 | 120 | err = cfg80211_mgd_wext_connect(rdev, wdev); |
667503dd JB |
121 | out: |
122 | wdev_unlock(wdev); | |
59bbb6f7 | 123 | mutex_unlock(&rdev->devlist_mtx); |
667503dd JB |
124 | cfg80211_unlock_rdev(rdev); |
125 | return err; | |
f2129354 | 126 | } |
f2129354 JB |
127 | |
128 | int cfg80211_mgd_wext_giwfreq(struct net_device *dev, | |
129 | struct iw_request_info *info, | |
130 | struct iw_freq *freq, char *extra) | |
131 | { | |
132 | struct wireless_dev *wdev = dev->ieee80211_ptr; | |
133 | struct ieee80211_channel *chan = NULL; | |
134 | ||
135 | /* call only for station! */ | |
136 | if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION)) | |
137 | return -EINVAL; | |
138 | ||
667503dd | 139 | wdev_lock(wdev); |
f2129354 | 140 | if (wdev->current_bss) |
19957bb3 | 141 | chan = wdev->current_bss->pub.channel; |
f2129354 JB |
142 | else if (wdev->wext.connect.channel) |
143 | chan = wdev->wext.connect.channel; | |
667503dd | 144 | wdev_unlock(wdev); |
f2129354 JB |
145 | |
146 | if (chan) { | |
147 | freq->m = chan->center_freq; | |
148 | freq->e = 6; | |
149 | return 0; | |
150 | } | |
151 | ||
152 | /* no channel if not joining */ | |
153 | return -EINVAL; | |
154 | } | |
f2129354 JB |
155 | |
156 | int cfg80211_mgd_wext_siwessid(struct net_device *dev, | |
157 | struct iw_request_info *info, | |
158 | struct iw_point *data, char *ssid) | |
159 | { | |
160 | struct wireless_dev *wdev = dev->ieee80211_ptr; | |
59bbb6f7 | 161 | struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy); |
f2129354 JB |
162 | size_t len = data->length; |
163 | int err; | |
164 | ||
165 | /* call only for station! */ | |
166 | if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION)) | |
167 | return -EINVAL; | |
168 | ||
169 | if (!data->flags) | |
170 | len = 0; | |
171 | ||
172 | /* iwconfig uses nul termination in SSID.. */ | |
173 | if (len > 0 && ssid[len - 1] == '\0') | |
174 | len--; | |
175 | ||
59bbb6f7 JB |
176 | cfg80211_lock_rdev(rdev); |
177 | mutex_lock(&rdev->devlist_mtx); | |
667503dd JB |
178 | wdev_lock(wdev); |
179 | ||
180 | err = 0; | |
181 | ||
f2129354 JB |
182 | if (wdev->sme_state != CFG80211_SME_IDLE) { |
183 | bool event = true; | |
25e83c49 JB |
184 | |
185 | if (wdev->wext.connect.ssid && len && | |
186 | len == wdev->wext.connect.ssid_len && | |
187 | memcmp(wdev->wext.connect.ssid, ssid, len) == 0) | |
188 | goto out; | |
189 | ||
f2129354 JB |
190 | /* if SSID set now, we'll try to connect, avoid event */ |
191 | if (len) | |
192 | event = false; | |
59bbb6f7 JB |
193 | err = __cfg80211_disconnect(rdev, dev, |
194 | WLAN_REASON_DEAUTH_LEAVING, event); | |
f2129354 | 195 | if (err) |
667503dd | 196 | goto out; |
f2129354 JB |
197 | } |
198 | ||
f401a6f7 | 199 | wdev->wext.prev_bssid_valid = false; |
f2129354 JB |
200 | wdev->wext.connect.ssid = wdev->wext.ssid; |
201 | memcpy(wdev->wext.ssid, ssid, len); | |
202 | wdev->wext.connect.ssid_len = len; | |
203 | ||
204 | wdev->wext.connect.crypto.control_port = false; | |
c0692b8f JB |
205 | wdev->wext.connect.crypto.control_port_ethertype = |
206 | cpu_to_be16(ETH_P_PAE); | |
f2129354 | 207 | |
59bbb6f7 | 208 | err = cfg80211_mgd_wext_connect(rdev, wdev); |
667503dd JB |
209 | out: |
210 | wdev_unlock(wdev); | |
59bbb6f7 JB |
211 | mutex_unlock(&rdev->devlist_mtx); |
212 | cfg80211_unlock_rdev(rdev); | |
667503dd | 213 | return err; |
f2129354 | 214 | } |
f2129354 JB |
215 | |
216 | int cfg80211_mgd_wext_giwessid(struct net_device *dev, | |
217 | struct iw_request_info *info, | |
218 | struct iw_point *data, char *ssid) | |
219 | { | |
220 | struct wireless_dev *wdev = dev->ieee80211_ptr; | |
221 | ||
222 | /* call only for station! */ | |
223 | if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION)) | |
224 | return -EINVAL; | |
225 | ||
226 | data->flags = 0; | |
227 | ||
667503dd | 228 | wdev_lock(wdev); |
a42dd7ef ZY |
229 | if (wdev->current_bss) { |
230 | const u8 *ie = ieee80211_bss_get_ie(&wdev->current_bss->pub, | |
231 | WLAN_EID_SSID); | |
232 | if (ie) { | |
233 | data->flags = 1; | |
234 | data->length = ie[1]; | |
235 | memcpy(ssid, ie + 2, data->length); | |
236 | } | |
237 | } else if (wdev->wext.connect.ssid && wdev->wext.connect.ssid_len) { | |
f2129354 JB |
238 | data->flags = 1; |
239 | data->length = wdev->wext.connect.ssid_len; | |
240 | memcpy(ssid, wdev->wext.connect.ssid, data->length); | |
33de4f9d | 241 | } |
667503dd | 242 | wdev_unlock(wdev); |
f2129354 JB |
243 | |
244 | return 0; | |
245 | } | |
f2129354 JB |
246 | |
247 | int cfg80211_mgd_wext_siwap(struct net_device *dev, | |
248 | struct iw_request_info *info, | |
249 | struct sockaddr *ap_addr, char *extra) | |
250 | { | |
251 | struct wireless_dev *wdev = dev->ieee80211_ptr; | |
59bbb6f7 | 252 | struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy); |
f2129354 JB |
253 | u8 *bssid = ap_addr->sa_data; |
254 | int err; | |
255 | ||
256 | /* call only for station! */ | |
257 | if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION)) | |
258 | return -EINVAL; | |
259 | ||
260 | if (ap_addr->sa_family != ARPHRD_ETHER) | |
261 | return -EINVAL; | |
262 | ||
263 | /* automatic mode */ | |
264 | if (is_zero_ether_addr(bssid) || is_broadcast_ether_addr(bssid)) | |
265 | bssid = NULL; | |
266 | ||
59bbb6f7 JB |
267 | cfg80211_lock_rdev(rdev); |
268 | mutex_lock(&rdev->devlist_mtx); | |
667503dd JB |
269 | wdev_lock(wdev); |
270 | ||
25e83c49 JB |
271 | if (wdev->sme_state != CFG80211_SME_IDLE) { |
272 | err = 0; | |
273 | /* both automatic */ | |
274 | if (!bssid && !wdev->wext.connect.bssid) | |
275 | goto out; | |
f2129354 | 276 | |
25e83c49 JB |
277 | /* fixed already - and no change */ |
278 | if (wdev->wext.connect.bssid && bssid && | |
279 | compare_ether_addr(bssid, wdev->wext.connect.bssid) == 0) | |
280 | goto out; | |
f2129354 | 281 | |
59bbb6f7 JB |
282 | err = __cfg80211_disconnect(rdev, dev, |
283 | WLAN_REASON_DEAUTH_LEAVING, false); | |
f2129354 | 284 | if (err) |
667503dd | 285 | goto out; |
f2129354 JB |
286 | } |
287 | ||
288 | if (bssid) { | |
289 | memcpy(wdev->wext.bssid, bssid, ETH_ALEN); | |
290 | wdev->wext.connect.bssid = wdev->wext.bssid; | |
291 | } else | |
292 | wdev->wext.connect.bssid = NULL; | |
293 | ||
59bbb6f7 | 294 | err = cfg80211_mgd_wext_connect(rdev, wdev); |
667503dd JB |
295 | out: |
296 | wdev_unlock(wdev); | |
59bbb6f7 JB |
297 | mutex_unlock(&rdev->devlist_mtx); |
298 | cfg80211_unlock_rdev(rdev); | |
667503dd | 299 | return err; |
f2129354 | 300 | } |
f2129354 JB |
301 | |
302 | int cfg80211_mgd_wext_giwap(struct net_device *dev, | |
303 | struct iw_request_info *info, | |
304 | struct sockaddr *ap_addr, char *extra) | |
305 | { | |
306 | struct wireless_dev *wdev = dev->ieee80211_ptr; | |
307 | ||
308 | /* call only for station! */ | |
309 | if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION)) | |
310 | return -EINVAL; | |
311 | ||
312 | ap_addr->sa_family = ARPHRD_ETHER; | |
313 | ||
667503dd | 314 | wdev_lock(wdev); |
f2129354 | 315 | if (wdev->current_bss) |
19957bb3 | 316 | memcpy(ap_addr->sa_data, wdev->current_bss->pub.bssid, ETH_ALEN); |
f2129354 JB |
317 | else |
318 | memset(ap_addr->sa_data, 0, ETH_ALEN); | |
667503dd | 319 | wdev_unlock(wdev); |
f2129354 JB |
320 | |
321 | return 0; | |
322 | } | |
f2129354 JB |
323 | |
324 | int cfg80211_wext_siwgenie(struct net_device *dev, | |
325 | struct iw_request_info *info, | |
326 | struct iw_point *data, char *extra) | |
327 | { | |
328 | struct wireless_dev *wdev = dev->ieee80211_ptr; | |
329 | struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy); | |
330 | u8 *ie = extra; | |
331 | int ie_len = data->length, err; | |
332 | ||
333 | if (wdev->iftype != NL80211_IFTYPE_STATION) | |
334 | return -EOPNOTSUPP; | |
335 | ||
336 | if (!ie_len) | |
337 | ie = NULL; | |
338 | ||
667503dd JB |
339 | wdev_lock(wdev); |
340 | ||
f2129354 | 341 | /* no change */ |
667503dd | 342 | err = 0; |
f2129354 JB |
343 | if (wdev->wext.ie_len == ie_len && |
344 | memcmp(wdev->wext.ie, ie, ie_len) == 0) | |
667503dd | 345 | goto out; |
f2129354 JB |
346 | |
347 | if (ie_len) { | |
348 | ie = kmemdup(extra, ie_len, GFP_KERNEL); | |
667503dd JB |
349 | if (!ie) { |
350 | err = -ENOMEM; | |
351 | goto out; | |
352 | } | |
f2129354 JB |
353 | } else |
354 | ie = NULL; | |
355 | ||
356 | kfree(wdev->wext.ie); | |
357 | wdev->wext.ie = ie; | |
358 | wdev->wext.ie_len = ie_len; | |
359 | ||
360 | if (wdev->sme_state != CFG80211_SME_IDLE) { | |
667503dd JB |
361 | err = __cfg80211_disconnect(rdev, dev, |
362 | WLAN_REASON_DEAUTH_LEAVING, false); | |
f2129354 | 363 | if (err) |
667503dd | 364 | goto out; |
f2129354 JB |
365 | } |
366 | ||
367 | /* userspace better not think we'll reconnect */ | |
667503dd JB |
368 | err = 0; |
369 | out: | |
370 | wdev_unlock(wdev); | |
371 | return err; | |
f2129354 | 372 | } |
f2129354 JB |
373 | |
374 | int cfg80211_wext_siwmlme(struct net_device *dev, | |
375 | struct iw_request_info *info, | |
376 | struct iw_point *data, char *extra) | |
377 | { | |
378 | struct wireless_dev *wdev = dev->ieee80211_ptr; | |
379 | struct iw_mlme *mlme = (struct iw_mlme *)extra; | |
380 | struct cfg80211_registered_device *rdev; | |
667503dd | 381 | int err; |
f2129354 JB |
382 | |
383 | if (!wdev) | |
384 | return -EOPNOTSUPP; | |
385 | ||
386 | rdev = wiphy_to_dev(wdev->wiphy); | |
387 | ||
388 | if (wdev->iftype != NL80211_IFTYPE_STATION) | |
389 | return -EINVAL; | |
390 | ||
391 | if (mlme->addr.sa_family != ARPHRD_ETHER) | |
392 | return -EINVAL; | |
393 | ||
667503dd | 394 | wdev_lock(wdev); |
f2129354 JB |
395 | switch (mlme->cmd) { |
396 | case IW_MLME_DEAUTH: | |
397 | case IW_MLME_DISASSOC: | |
667503dd JB |
398 | err = __cfg80211_disconnect(rdev, dev, mlme->reason_code, |
399 | true); | |
400 | break; | |
f2129354 | 401 | default: |
667503dd JB |
402 | err = -EOPNOTSUPP; |
403 | break; | |
f2129354 | 404 | } |
667503dd JB |
405 | wdev_unlock(wdev); |
406 | ||
407 | return err; | |
f2129354 | 408 | } |