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 | |
73fb08e2 | 24 | ASSERT_RTNL(); |
667503dd JB |
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; | |
4be3bd8c JB |
38 | if (wdev->wext.default_key != -1) |
39 | wdev->wext.connect.privacy = true; | |
fffd0934 JB |
40 | } |
41 | ||
42 | if (!wdev->wext.connect.ssid_len) | |
43 | return 0; | |
44 | ||
f1c1f17a | 45 | if (wdev->wext.keys && wdev->wext.keys->def != -1) { |
fffd0934 JB |
46 | ck = kmemdup(wdev->wext.keys, sizeof(*ck), GFP_KERNEL); |
47 | if (!ck) | |
48 | return -ENOMEM; | |
b8676221 | 49 | for (i = 0; i < CFG80211_MAX_WEP_KEYS; i++) |
fffd0934 JB |
50 | ck->params[i].key = ck->data[i]; |
51 | } | |
f401a6f7 JB |
52 | |
53 | if (wdev->wext.prev_bssid_valid) | |
54 | prev_bssid = wdev->wext.prev_bssid; | |
55 | ||
83739b03 JB |
56 | err = cfg80211_connect(rdev, wdev->netdev, |
57 | &wdev->wext.connect, ck, prev_bssid); | |
fffd0934 | 58 | if (err) |
b47f610b | 59 | kzfree(ck); |
f2129354 JB |
60 | |
61 | return err; | |
62 | } | |
63 | ||
64 | int cfg80211_mgd_wext_siwfreq(struct net_device *dev, | |
65 | struct iw_request_info *info, | |
59bbb6f7 | 66 | struct iw_freq *wextfreq, char *extra) |
f2129354 JB |
67 | { |
68 | struct wireless_dev *wdev = dev->ieee80211_ptr; | |
f26cbf40 | 69 | struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); |
59bbb6f7 JB |
70 | struct ieee80211_channel *chan = NULL; |
71 | int err, freq; | |
f2129354 JB |
72 | |
73 | /* call only for station! */ | |
74 | if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION)) | |
75 | return -EINVAL; | |
76 | ||
96998e3a | 77 | freq = cfg80211_wext_freq(wextfreq); |
59bbb6f7 JB |
78 | if (freq < 0) |
79 | return freq; | |
f2129354 | 80 | |
59bbb6f7 JB |
81 | if (freq) { |
82 | chan = ieee80211_get_channel(wdev->wiphy, freq); | |
83 | if (!chan) | |
84 | return -EINVAL; | |
85 | if (chan->flags & IEEE80211_CHAN_DISABLED) | |
86 | return -EINVAL; | |
87 | } | |
f2129354 | 88 | |
667503dd JB |
89 | wdev_lock(wdev); |
90 | ||
ceca7b71 | 91 | if (wdev->conn) { |
f2129354 | 92 | bool event = true; |
25e83c49 JB |
93 | |
94 | if (wdev->wext.connect.channel == chan) { | |
95 | err = 0; | |
96 | goto out; | |
97 | } | |
98 | ||
f2129354 JB |
99 | /* if SSID set, we'll try right again, avoid event */ |
100 | if (wdev->wext.connect.ssid_len) | |
101 | event = false; | |
83739b03 JB |
102 | err = cfg80211_disconnect(rdev, dev, |
103 | WLAN_REASON_DEAUTH_LEAVING, event); | |
f2129354 | 104 | if (err) |
667503dd | 105 | goto out; |
f2129354 JB |
106 | } |
107 | ||
667503dd | 108 | |
f2129354 JB |
109 | wdev->wext.connect.channel = chan; |
110 | ||
e8c9bd5b JB |
111 | /* |
112 | * SSID is not set, we just want to switch monitor channel, | |
113 | * this is really just backward compatibility, if the SSID | |
114 | * is set then we use the channel to select the BSS to use | |
115 | * to connect to instead. If we were connected on another | |
116 | * channel we disconnected above and reconnect below. | |
117 | */ | |
59bbb6f7 | 118 | if (chan && !wdev->wext.connect.ssid_len) { |
683b6d3b | 119 | struct cfg80211_chan_def chandef = { |
3d9d1d66 JB |
120 | .width = NL80211_CHAN_WIDTH_20_NOHT, |
121 | .center_freq1 = freq, | |
683b6d3b JB |
122 | }; |
123 | ||
124 | chandef.chan = ieee80211_get_channel(&rdev->wiphy, freq); | |
125 | if (chandef.chan) | |
126 | err = cfg80211_set_monitor_channel(rdev, &chandef); | |
127 | else | |
128 | err = -EINVAL; | |
667503dd | 129 | goto out; |
f2129354 JB |
130 | } |
131 | ||
59bbb6f7 | 132 | err = cfg80211_mgd_wext_connect(rdev, wdev); |
667503dd JB |
133 | out: |
134 | wdev_unlock(wdev); | |
667503dd | 135 | return err; |
f2129354 | 136 | } |
f2129354 JB |
137 | |
138 | int cfg80211_mgd_wext_giwfreq(struct net_device *dev, | |
139 | struct iw_request_info *info, | |
140 | struct iw_freq *freq, char *extra) | |
141 | { | |
142 | struct wireless_dev *wdev = dev->ieee80211_ptr; | |
143 | struct ieee80211_channel *chan = NULL; | |
144 | ||
145 | /* call only for station! */ | |
146 | if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION)) | |
147 | return -EINVAL; | |
148 | ||
667503dd | 149 | wdev_lock(wdev); |
f2129354 | 150 | if (wdev->current_bss) |
19957bb3 | 151 | chan = wdev->current_bss->pub.channel; |
f2129354 JB |
152 | else if (wdev->wext.connect.channel) |
153 | chan = wdev->wext.connect.channel; | |
667503dd | 154 | wdev_unlock(wdev); |
f2129354 JB |
155 | |
156 | if (chan) { | |
157 | freq->m = chan->center_freq; | |
158 | freq->e = 6; | |
159 | return 0; | |
160 | } | |
161 | ||
162 | /* no channel if not joining */ | |
163 | return -EINVAL; | |
164 | } | |
f2129354 JB |
165 | |
166 | int cfg80211_mgd_wext_siwessid(struct net_device *dev, | |
167 | struct iw_request_info *info, | |
168 | struct iw_point *data, char *ssid) | |
169 | { | |
170 | struct wireless_dev *wdev = dev->ieee80211_ptr; | |
f26cbf40 | 171 | struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); |
f2129354 JB |
172 | size_t len = data->length; |
173 | int err; | |
174 | ||
175 | /* call only for station! */ | |
176 | if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION)) | |
177 | return -EINVAL; | |
178 | ||
179 | if (!data->flags) | |
180 | len = 0; | |
181 | ||
182 | /* iwconfig uses nul termination in SSID.. */ | |
183 | if (len > 0 && ssid[len - 1] == '\0') | |
184 | len--; | |
185 | ||
667503dd JB |
186 | wdev_lock(wdev); |
187 | ||
188 | err = 0; | |
189 | ||
ceca7b71 | 190 | if (wdev->conn) { |
f2129354 | 191 | bool event = true; |
25e83c49 JB |
192 | |
193 | if (wdev->wext.connect.ssid && len && | |
194 | len == wdev->wext.connect.ssid_len && | |
195 | memcmp(wdev->wext.connect.ssid, ssid, len) == 0) | |
196 | goto out; | |
197 | ||
f2129354 JB |
198 | /* if SSID set now, we'll try to connect, avoid event */ |
199 | if (len) | |
200 | event = false; | |
83739b03 JB |
201 | err = cfg80211_disconnect(rdev, dev, |
202 | WLAN_REASON_DEAUTH_LEAVING, event); | |
f2129354 | 203 | if (err) |
667503dd | 204 | goto out; |
f2129354 JB |
205 | } |
206 | ||
f401a6f7 | 207 | wdev->wext.prev_bssid_valid = false; |
f2129354 JB |
208 | wdev->wext.connect.ssid = wdev->wext.ssid; |
209 | memcpy(wdev->wext.ssid, ssid, len); | |
210 | wdev->wext.connect.ssid_len = len; | |
211 | ||
212 | wdev->wext.connect.crypto.control_port = false; | |
c0692b8f JB |
213 | wdev->wext.connect.crypto.control_port_ethertype = |
214 | cpu_to_be16(ETH_P_PAE); | |
f2129354 | 215 | |
59bbb6f7 | 216 | err = cfg80211_mgd_wext_connect(rdev, wdev); |
667503dd JB |
217 | out: |
218 | wdev_unlock(wdev); | |
667503dd | 219 | return err; |
f2129354 | 220 | } |
f2129354 JB |
221 | |
222 | int cfg80211_mgd_wext_giwessid(struct net_device *dev, | |
223 | struct iw_request_info *info, | |
224 | struct iw_point *data, char *ssid) | |
225 | { | |
226 | struct wireless_dev *wdev = dev->ieee80211_ptr; | |
227 | ||
228 | /* call only for station! */ | |
229 | if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION)) | |
230 | return -EINVAL; | |
231 | ||
232 | data->flags = 0; | |
233 | ||
667503dd | 234 | wdev_lock(wdev); |
a42dd7ef | 235 | if (wdev->current_bss) { |
9caf0364 JB |
236 | const u8 *ie; |
237 | ||
238 | rcu_read_lock(); | |
239 | ie = ieee80211_bss_get_ie(&wdev->current_bss->pub, | |
240 | WLAN_EID_SSID); | |
a42dd7ef ZY |
241 | if (ie) { |
242 | data->flags = 1; | |
243 | data->length = ie[1]; | |
244 | memcpy(ssid, ie + 2, data->length); | |
245 | } | |
9caf0364 | 246 | rcu_read_unlock(); |
a42dd7ef | 247 | } else if (wdev->wext.connect.ssid && wdev->wext.connect.ssid_len) { |
f2129354 JB |
248 | data->flags = 1; |
249 | data->length = wdev->wext.connect.ssid_len; | |
250 | memcpy(ssid, wdev->wext.connect.ssid, data->length); | |
33de4f9d | 251 | } |
667503dd | 252 | wdev_unlock(wdev); |
f2129354 JB |
253 | |
254 | return 0; | |
255 | } | |
f2129354 JB |
256 | |
257 | int cfg80211_mgd_wext_siwap(struct net_device *dev, | |
258 | struct iw_request_info *info, | |
259 | struct sockaddr *ap_addr, char *extra) | |
260 | { | |
261 | struct wireless_dev *wdev = dev->ieee80211_ptr; | |
f26cbf40 | 262 | struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); |
f2129354 JB |
263 | u8 *bssid = ap_addr->sa_data; |
264 | int err; | |
265 | ||
266 | /* call only for station! */ | |
267 | if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION)) | |
268 | return -EINVAL; | |
269 | ||
270 | if (ap_addr->sa_family != ARPHRD_ETHER) | |
271 | return -EINVAL; | |
272 | ||
273 | /* automatic mode */ | |
274 | if (is_zero_ether_addr(bssid) || is_broadcast_ether_addr(bssid)) | |
275 | bssid = NULL; | |
276 | ||
667503dd JB |
277 | wdev_lock(wdev); |
278 | ||
ceca7b71 | 279 | if (wdev->conn) { |
25e83c49 JB |
280 | err = 0; |
281 | /* both automatic */ | |
282 | if (!bssid && !wdev->wext.connect.bssid) | |
283 | goto out; | |
f2129354 | 284 | |
25e83c49 JB |
285 | /* fixed already - and no change */ |
286 | if (wdev->wext.connect.bssid && bssid && | |
ac422d3c | 287 | ether_addr_equal(bssid, wdev->wext.connect.bssid)) |
25e83c49 | 288 | goto out; |
f2129354 | 289 | |
83739b03 JB |
290 | err = cfg80211_disconnect(rdev, dev, |
291 | WLAN_REASON_DEAUTH_LEAVING, false); | |
f2129354 | 292 | if (err) |
667503dd | 293 | goto out; |
f2129354 JB |
294 | } |
295 | ||
296 | if (bssid) { | |
297 | memcpy(wdev->wext.bssid, bssid, ETH_ALEN); | |
298 | wdev->wext.connect.bssid = wdev->wext.bssid; | |
299 | } else | |
300 | wdev->wext.connect.bssid = NULL; | |
301 | ||
59bbb6f7 | 302 | err = cfg80211_mgd_wext_connect(rdev, wdev); |
667503dd JB |
303 | out: |
304 | wdev_unlock(wdev); | |
667503dd | 305 | return err; |
f2129354 | 306 | } |
f2129354 JB |
307 | |
308 | int cfg80211_mgd_wext_giwap(struct net_device *dev, | |
309 | struct iw_request_info *info, | |
310 | struct sockaddr *ap_addr, char *extra) | |
311 | { | |
312 | struct wireless_dev *wdev = dev->ieee80211_ptr; | |
313 | ||
314 | /* call only for station! */ | |
315 | if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION)) | |
316 | return -EINVAL; | |
317 | ||
318 | ap_addr->sa_family = ARPHRD_ETHER; | |
319 | ||
667503dd | 320 | wdev_lock(wdev); |
f2129354 | 321 | if (wdev->current_bss) |
19957bb3 | 322 | memcpy(ap_addr->sa_data, wdev->current_bss->pub.bssid, ETH_ALEN); |
f2129354 | 323 | else |
d2beae10 | 324 | eth_zero_addr(ap_addr->sa_data); |
667503dd | 325 | wdev_unlock(wdev); |
f2129354 JB |
326 | |
327 | return 0; | |
328 | } | |
f2129354 JB |
329 | |
330 | int cfg80211_wext_siwgenie(struct net_device *dev, | |
331 | struct iw_request_info *info, | |
332 | struct iw_point *data, char *extra) | |
333 | { | |
334 | struct wireless_dev *wdev = dev->ieee80211_ptr; | |
f26cbf40 | 335 | struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); |
f2129354 JB |
336 | u8 *ie = extra; |
337 | int ie_len = data->length, err; | |
338 | ||
339 | if (wdev->iftype != NL80211_IFTYPE_STATION) | |
340 | return -EOPNOTSUPP; | |
341 | ||
342 | if (!ie_len) | |
343 | ie = NULL; | |
344 | ||
667503dd JB |
345 | wdev_lock(wdev); |
346 | ||
f2129354 | 347 | /* no change */ |
667503dd | 348 | err = 0; |
f2129354 JB |
349 | if (wdev->wext.ie_len == ie_len && |
350 | memcmp(wdev->wext.ie, ie, ie_len) == 0) | |
667503dd | 351 | goto out; |
f2129354 JB |
352 | |
353 | if (ie_len) { | |
354 | ie = kmemdup(extra, ie_len, GFP_KERNEL); | |
667503dd JB |
355 | if (!ie) { |
356 | err = -ENOMEM; | |
357 | goto out; | |
358 | } | |
f2129354 JB |
359 | } else |
360 | ie = NULL; | |
361 | ||
362 | kfree(wdev->wext.ie); | |
363 | wdev->wext.ie = ie; | |
364 | wdev->wext.ie_len = ie_len; | |
365 | ||
ceca7b71 | 366 | if (wdev->conn) { |
83739b03 JB |
367 | err = cfg80211_disconnect(rdev, dev, |
368 | WLAN_REASON_DEAUTH_LEAVING, false); | |
f2129354 | 369 | if (err) |
667503dd | 370 | goto out; |
f2129354 JB |
371 | } |
372 | ||
373 | /* userspace better not think we'll reconnect */ | |
667503dd JB |
374 | err = 0; |
375 | out: | |
376 | wdev_unlock(wdev); | |
377 | return err; | |
f2129354 | 378 | } |
f2129354 JB |
379 | |
380 | int cfg80211_wext_siwmlme(struct net_device *dev, | |
381 | struct iw_request_info *info, | |
382 | struct iw_point *data, char *extra) | |
383 | { | |
384 | struct wireless_dev *wdev = dev->ieee80211_ptr; | |
385 | struct iw_mlme *mlme = (struct iw_mlme *)extra; | |
386 | struct cfg80211_registered_device *rdev; | |
667503dd | 387 | int err; |
f2129354 JB |
388 | |
389 | if (!wdev) | |
390 | return -EOPNOTSUPP; | |
391 | ||
f26cbf40 | 392 | rdev = wiphy_to_rdev(wdev->wiphy); |
f2129354 JB |
393 | |
394 | if (wdev->iftype != NL80211_IFTYPE_STATION) | |
395 | return -EINVAL; | |
396 | ||
397 | if (mlme->addr.sa_family != ARPHRD_ETHER) | |
398 | return -EINVAL; | |
399 | ||
667503dd | 400 | wdev_lock(wdev); |
f2129354 JB |
401 | switch (mlme->cmd) { |
402 | case IW_MLME_DEAUTH: | |
403 | case IW_MLME_DISASSOC: | |
83739b03 | 404 | err = cfg80211_disconnect(rdev, dev, mlme->reason_code, true); |
667503dd | 405 | break; |
f2129354 | 406 | default: |
667503dd JB |
407 | err = -EOPNOTSUPP; |
408 | break; | |
f2129354 | 409 | } |
667503dd JB |
410 | wdev_unlock(wdev); |
411 | ||
412 | return err; | |
f2129354 | 413 | } |