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 | ||
108 | wdev->wext.connect.channel = chan; | |
59bbb6f7 | 109 | err = cfg80211_mgd_wext_connect(rdev, wdev); |
667503dd JB |
110 | out: |
111 | wdev_unlock(wdev); | |
667503dd | 112 | return err; |
f2129354 | 113 | } |
f2129354 JB |
114 | |
115 | int cfg80211_mgd_wext_giwfreq(struct net_device *dev, | |
116 | struct iw_request_info *info, | |
117 | struct iw_freq *freq, char *extra) | |
118 | { | |
119 | struct wireless_dev *wdev = dev->ieee80211_ptr; | |
120 | struct ieee80211_channel *chan = NULL; | |
121 | ||
122 | /* call only for station! */ | |
123 | if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION)) | |
124 | return -EINVAL; | |
125 | ||
667503dd | 126 | wdev_lock(wdev); |
f2129354 | 127 | if (wdev->current_bss) |
19957bb3 | 128 | chan = wdev->current_bss->pub.channel; |
f2129354 JB |
129 | else if (wdev->wext.connect.channel) |
130 | chan = wdev->wext.connect.channel; | |
667503dd | 131 | wdev_unlock(wdev); |
f2129354 JB |
132 | |
133 | if (chan) { | |
134 | freq->m = chan->center_freq; | |
135 | freq->e = 6; | |
136 | return 0; | |
137 | } | |
138 | ||
139 | /* no channel if not joining */ | |
140 | return -EINVAL; | |
141 | } | |
f2129354 JB |
142 | |
143 | int cfg80211_mgd_wext_siwessid(struct net_device *dev, | |
144 | struct iw_request_info *info, | |
145 | struct iw_point *data, char *ssid) | |
146 | { | |
147 | struct wireless_dev *wdev = dev->ieee80211_ptr; | |
f26cbf40 | 148 | struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); |
f2129354 JB |
149 | size_t len = data->length; |
150 | int err; | |
151 | ||
152 | /* call only for station! */ | |
153 | if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION)) | |
154 | return -EINVAL; | |
155 | ||
156 | if (!data->flags) | |
157 | len = 0; | |
158 | ||
159 | /* iwconfig uses nul termination in SSID.. */ | |
160 | if (len > 0 && ssid[len - 1] == '\0') | |
161 | len--; | |
162 | ||
667503dd JB |
163 | wdev_lock(wdev); |
164 | ||
165 | err = 0; | |
166 | ||
ceca7b71 | 167 | if (wdev->conn) { |
f2129354 | 168 | bool event = true; |
25e83c49 JB |
169 | |
170 | if (wdev->wext.connect.ssid && len && | |
171 | len == wdev->wext.connect.ssid_len && | |
172 | memcmp(wdev->wext.connect.ssid, ssid, len) == 0) | |
173 | goto out; | |
174 | ||
f2129354 JB |
175 | /* if SSID set now, we'll try to connect, avoid event */ |
176 | if (len) | |
177 | event = false; | |
83739b03 JB |
178 | err = cfg80211_disconnect(rdev, dev, |
179 | WLAN_REASON_DEAUTH_LEAVING, event); | |
f2129354 | 180 | if (err) |
667503dd | 181 | goto out; |
f2129354 JB |
182 | } |
183 | ||
f401a6f7 | 184 | wdev->wext.prev_bssid_valid = false; |
f2129354 JB |
185 | wdev->wext.connect.ssid = wdev->wext.ssid; |
186 | memcpy(wdev->wext.ssid, ssid, len); | |
187 | wdev->wext.connect.ssid_len = len; | |
188 | ||
189 | wdev->wext.connect.crypto.control_port = false; | |
c0692b8f JB |
190 | wdev->wext.connect.crypto.control_port_ethertype = |
191 | cpu_to_be16(ETH_P_PAE); | |
f2129354 | 192 | |
59bbb6f7 | 193 | err = cfg80211_mgd_wext_connect(rdev, wdev); |
667503dd JB |
194 | out: |
195 | wdev_unlock(wdev); | |
667503dd | 196 | return err; |
f2129354 | 197 | } |
f2129354 JB |
198 | |
199 | int cfg80211_mgd_wext_giwessid(struct net_device *dev, | |
200 | struct iw_request_info *info, | |
201 | struct iw_point *data, char *ssid) | |
202 | { | |
203 | struct wireless_dev *wdev = dev->ieee80211_ptr; | |
204 | ||
205 | /* call only for station! */ | |
206 | if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION)) | |
207 | return -EINVAL; | |
208 | ||
209 | data->flags = 0; | |
210 | ||
667503dd | 211 | wdev_lock(wdev); |
a42dd7ef | 212 | if (wdev->current_bss) { |
9caf0364 JB |
213 | const u8 *ie; |
214 | ||
215 | rcu_read_lock(); | |
216 | ie = ieee80211_bss_get_ie(&wdev->current_bss->pub, | |
217 | WLAN_EID_SSID); | |
a42dd7ef ZY |
218 | if (ie) { |
219 | data->flags = 1; | |
220 | data->length = ie[1]; | |
221 | memcpy(ssid, ie + 2, data->length); | |
222 | } | |
9caf0364 | 223 | rcu_read_unlock(); |
a42dd7ef | 224 | } else if (wdev->wext.connect.ssid && wdev->wext.connect.ssid_len) { |
f2129354 JB |
225 | data->flags = 1; |
226 | data->length = wdev->wext.connect.ssid_len; | |
227 | memcpy(ssid, wdev->wext.connect.ssid, data->length); | |
33de4f9d | 228 | } |
667503dd | 229 | wdev_unlock(wdev); |
f2129354 JB |
230 | |
231 | return 0; | |
232 | } | |
f2129354 JB |
233 | |
234 | int cfg80211_mgd_wext_siwap(struct net_device *dev, | |
235 | struct iw_request_info *info, | |
236 | struct sockaddr *ap_addr, char *extra) | |
237 | { | |
238 | struct wireless_dev *wdev = dev->ieee80211_ptr; | |
f26cbf40 | 239 | struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); |
f2129354 JB |
240 | u8 *bssid = ap_addr->sa_data; |
241 | int err; | |
242 | ||
243 | /* call only for station! */ | |
244 | if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION)) | |
245 | return -EINVAL; | |
246 | ||
247 | if (ap_addr->sa_family != ARPHRD_ETHER) | |
248 | return -EINVAL; | |
249 | ||
250 | /* automatic mode */ | |
251 | if (is_zero_ether_addr(bssid) || is_broadcast_ether_addr(bssid)) | |
252 | bssid = NULL; | |
253 | ||
667503dd JB |
254 | wdev_lock(wdev); |
255 | ||
ceca7b71 | 256 | if (wdev->conn) { |
25e83c49 JB |
257 | err = 0; |
258 | /* both automatic */ | |
259 | if (!bssid && !wdev->wext.connect.bssid) | |
260 | goto out; | |
f2129354 | 261 | |
25e83c49 JB |
262 | /* fixed already - and no change */ |
263 | if (wdev->wext.connect.bssid && bssid && | |
ac422d3c | 264 | ether_addr_equal(bssid, wdev->wext.connect.bssid)) |
25e83c49 | 265 | goto out; |
f2129354 | 266 | |
83739b03 JB |
267 | err = cfg80211_disconnect(rdev, dev, |
268 | WLAN_REASON_DEAUTH_LEAVING, false); | |
f2129354 | 269 | if (err) |
667503dd | 270 | goto out; |
f2129354 JB |
271 | } |
272 | ||
273 | if (bssid) { | |
274 | memcpy(wdev->wext.bssid, bssid, ETH_ALEN); | |
275 | wdev->wext.connect.bssid = wdev->wext.bssid; | |
276 | } else | |
277 | wdev->wext.connect.bssid = NULL; | |
278 | ||
59bbb6f7 | 279 | err = cfg80211_mgd_wext_connect(rdev, wdev); |
667503dd JB |
280 | out: |
281 | wdev_unlock(wdev); | |
667503dd | 282 | return err; |
f2129354 | 283 | } |
f2129354 JB |
284 | |
285 | int cfg80211_mgd_wext_giwap(struct net_device *dev, | |
286 | struct iw_request_info *info, | |
287 | struct sockaddr *ap_addr, char *extra) | |
288 | { | |
289 | struct wireless_dev *wdev = dev->ieee80211_ptr; | |
290 | ||
291 | /* call only for station! */ | |
292 | if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION)) | |
293 | return -EINVAL; | |
294 | ||
295 | ap_addr->sa_family = ARPHRD_ETHER; | |
296 | ||
667503dd | 297 | wdev_lock(wdev); |
f2129354 | 298 | if (wdev->current_bss) |
19957bb3 | 299 | memcpy(ap_addr->sa_data, wdev->current_bss->pub.bssid, ETH_ALEN); |
f2129354 | 300 | else |
d2beae10 | 301 | eth_zero_addr(ap_addr->sa_data); |
667503dd | 302 | wdev_unlock(wdev); |
f2129354 JB |
303 | |
304 | return 0; | |
305 | } | |
f2129354 JB |
306 | |
307 | int cfg80211_wext_siwgenie(struct net_device *dev, | |
308 | struct iw_request_info *info, | |
309 | struct iw_point *data, char *extra) | |
310 | { | |
311 | struct wireless_dev *wdev = dev->ieee80211_ptr; | |
f26cbf40 | 312 | struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); |
f2129354 JB |
313 | u8 *ie = extra; |
314 | int ie_len = data->length, err; | |
315 | ||
316 | if (wdev->iftype != NL80211_IFTYPE_STATION) | |
317 | return -EOPNOTSUPP; | |
318 | ||
319 | if (!ie_len) | |
320 | ie = NULL; | |
321 | ||
667503dd JB |
322 | wdev_lock(wdev); |
323 | ||
f2129354 | 324 | /* no change */ |
667503dd | 325 | err = 0; |
f2129354 JB |
326 | if (wdev->wext.ie_len == ie_len && |
327 | memcmp(wdev->wext.ie, ie, ie_len) == 0) | |
667503dd | 328 | goto out; |
f2129354 JB |
329 | |
330 | if (ie_len) { | |
331 | ie = kmemdup(extra, ie_len, GFP_KERNEL); | |
667503dd JB |
332 | if (!ie) { |
333 | err = -ENOMEM; | |
334 | goto out; | |
335 | } | |
f2129354 JB |
336 | } else |
337 | ie = NULL; | |
338 | ||
339 | kfree(wdev->wext.ie); | |
340 | wdev->wext.ie = ie; | |
341 | wdev->wext.ie_len = ie_len; | |
342 | ||
ceca7b71 | 343 | if (wdev->conn) { |
83739b03 JB |
344 | err = cfg80211_disconnect(rdev, dev, |
345 | WLAN_REASON_DEAUTH_LEAVING, false); | |
f2129354 | 346 | if (err) |
667503dd | 347 | goto out; |
f2129354 JB |
348 | } |
349 | ||
350 | /* userspace better not think we'll reconnect */ | |
667503dd JB |
351 | err = 0; |
352 | out: | |
353 | wdev_unlock(wdev); | |
354 | return err; | |
f2129354 | 355 | } |
f2129354 JB |
356 | |
357 | int cfg80211_wext_siwmlme(struct net_device *dev, | |
358 | struct iw_request_info *info, | |
359 | struct iw_point *data, char *extra) | |
360 | { | |
361 | struct wireless_dev *wdev = dev->ieee80211_ptr; | |
362 | struct iw_mlme *mlme = (struct iw_mlme *)extra; | |
363 | struct cfg80211_registered_device *rdev; | |
667503dd | 364 | int err; |
f2129354 JB |
365 | |
366 | if (!wdev) | |
367 | return -EOPNOTSUPP; | |
368 | ||
f26cbf40 | 369 | rdev = wiphy_to_rdev(wdev->wiphy); |
f2129354 JB |
370 | |
371 | if (wdev->iftype != NL80211_IFTYPE_STATION) | |
372 | return -EINVAL; | |
373 | ||
374 | if (mlme->addr.sa_family != ARPHRD_ETHER) | |
375 | return -EINVAL; | |
376 | ||
667503dd | 377 | wdev_lock(wdev); |
f2129354 JB |
378 | switch (mlme->cmd) { |
379 | case IW_MLME_DEAUTH: | |
380 | case IW_MLME_DISASSOC: | |
83739b03 | 381 | err = cfg80211_disconnect(rdev, dev, mlme->reason_code, true); |
667503dd | 382 | break; |
f2129354 | 383 | default: |
667503dd JB |
384 | err = -EOPNOTSUPP; |
385 | break; | |
f2129354 | 386 | } |
667503dd JB |
387 | wdev_unlock(wdev); |
388 | ||
389 | return err; | |
f2129354 | 390 | } |