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-rw-r--r--net/wireless/wext-sme.c404
1 files changed, 404 insertions, 0 deletions
diff --git a/net/wireless/wext-sme.c b/net/wireless/wext-sme.c
new file mode 100644
index 000000000000..d16cd9ea4d00
--- /dev/null
+++ b/net/wireless/wext-sme.c
@@ -0,0 +1,404 @@
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>
10#include <net/cfg80211.h>
11#include "wext-compat.h"
12#include "nl80211.h"
13
14int cfg80211_mgd_wext_connect(struct cfg80211_registered_device *rdev,
15 struct wireless_dev *wdev)
16{
17 struct cfg80211_cached_keys *ck = NULL;
18 const u8 *prev_bssid = NULL;
19 int err, i;
20
21 ASSERT_RDEV_LOCK(rdev);
22 ASSERT_WDEV_LOCK(wdev);
23
24 if (!netif_running(wdev->netdev))
25 return 0;
26
27 wdev->wext.connect.ie = wdev->wext.ie;
28 wdev->wext.connect.ie_len = wdev->wext.ie_len;
29 wdev->wext.connect.privacy = wdev->wext.default_key != -1;
30
31 if (wdev->wext.keys) {
32 wdev->wext.keys->def = wdev->wext.default_key;
33 wdev->wext.keys->defmgmt = wdev->wext.default_mgmt_key;
34 }
35
36 if (!wdev->wext.connect.ssid_len)
37 return 0;
38
39 if (wdev->wext.keys) {
40 ck = kmemdup(wdev->wext.keys, sizeof(*ck), GFP_KERNEL);
41 if (!ck)
42 return -ENOMEM;
43 for (i = 0; i < 6; i++)
44 ck->params[i].key = ck->data[i];
45 }
46
47 if (wdev->wext.prev_bssid_valid)
48 prev_bssid = wdev->wext.prev_bssid;
49
50 err = __cfg80211_connect(rdev, wdev->netdev,
51 &wdev->wext.connect, ck, prev_bssid);
52 if (err)
53 kfree(ck);
54
55 return err;
56}
57
58int cfg80211_mgd_wext_siwfreq(struct net_device *dev,
59 struct iw_request_info *info,
60 struct iw_freq *wextfreq, char *extra)
61{
62 struct wireless_dev *wdev = dev->ieee80211_ptr;
63 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
64 struct ieee80211_channel *chan = NULL;
65 int err, freq;
66
67 /* call only for station! */
68 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION))
69 return -EINVAL;
70
71 freq = cfg80211_wext_freq(wdev->wiphy, wextfreq);
72 if (freq < 0)
73 return freq;
74
75 if (freq) {
76 chan = ieee80211_get_channel(wdev->wiphy, freq);
77 if (!chan)
78 return -EINVAL;
79 if (chan->flags & IEEE80211_CHAN_DISABLED)
80 return -EINVAL;
81 }
82
83 cfg80211_lock_rdev(rdev);
84 mutex_lock(&rdev->devlist_mtx);
85 wdev_lock(wdev);
86
87 if (wdev->sme_state != CFG80211_SME_IDLE) {
88 bool event = true;
89
90 if (wdev->wext.connect.channel == chan) {
91 err = 0;
92 goto out;
93 }
94
95 /* if SSID set, we'll try right again, avoid event */
96 if (wdev->wext.connect.ssid_len)
97 event = false;
98 err = __cfg80211_disconnect(rdev, dev,
99 WLAN_REASON_DEAUTH_LEAVING, event);
100 if (err)
101 goto out;
102 }
103
104
105 wdev->wext.connect.channel = chan;
106
107 /* SSID is not set, we just want to switch channel */
108 if (chan && !wdev->wext.connect.ssid_len) {
109 err = rdev_set_freq(rdev, wdev, freq, NL80211_CHAN_NO_HT);
110 goto out;
111 }
112
113 err = cfg80211_mgd_wext_connect(rdev, wdev);
114 out:
115 wdev_unlock(wdev);
116 mutex_unlock(&rdev->devlist_mtx);
117 cfg80211_unlock_rdev(rdev);
118 return err;
119}
120
121int cfg80211_mgd_wext_giwfreq(struct net_device *dev,
122 struct iw_request_info *info,
123 struct iw_freq *freq, char *extra)
124{
125 struct wireless_dev *wdev = dev->ieee80211_ptr;
126 struct ieee80211_channel *chan = NULL;
127
128 /* call only for station! */
129 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION))
130 return -EINVAL;
131
132 wdev_lock(wdev);
133 if (wdev->current_bss)
134 chan = wdev->current_bss->pub.channel;
135 else if (wdev->wext.connect.channel)
136 chan = wdev->wext.connect.channel;
137 wdev_unlock(wdev);
138
139 if (chan) {
140 freq->m = chan->center_freq;
141 freq->e = 6;
142 return 0;
143 }
144
145 /* no channel if not joining */
146 return -EINVAL;
147}
148
149int cfg80211_mgd_wext_siwessid(struct net_device *dev,
150 struct iw_request_info *info,
151 struct iw_point *data, char *ssid)
152{
153 struct wireless_dev *wdev = dev->ieee80211_ptr;
154 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
155 size_t len = data->length;
156 int err;
157
158 /* call only for station! */
159 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION))
160 return -EINVAL;
161
162 if (!data->flags)
163 len = 0;
164
165 /* iwconfig uses nul termination in SSID.. */
166 if (len > 0 && ssid[len - 1] == '\0')
167 len--;
168
169 cfg80211_lock_rdev(rdev);
170 mutex_lock(&rdev->devlist_mtx);
171 wdev_lock(wdev);
172
173 err = 0;
174
175 if (wdev->sme_state != CFG80211_SME_IDLE) {
176 bool event = true;
177
178 if (wdev->wext.connect.ssid && len &&
179 len == wdev->wext.connect.ssid_len &&
180 memcmp(wdev->wext.connect.ssid, ssid, len) == 0)
181 goto out;
182
183 /* if SSID set now, we'll try to connect, avoid event */
184 if (len)
185 event = false;
186 err = __cfg80211_disconnect(rdev, dev,
187 WLAN_REASON_DEAUTH_LEAVING, event);
188 if (err)
189 goto out;
190 }
191
192 wdev->wext.prev_bssid_valid = false;
193 wdev->wext.connect.ssid = wdev->wext.ssid;
194 memcpy(wdev->wext.ssid, ssid, len);
195 wdev->wext.connect.ssid_len = len;
196
197 wdev->wext.connect.crypto.control_port = false;
198
199 err = cfg80211_mgd_wext_connect(rdev, wdev);
200 out:
201 wdev_unlock(wdev);
202 mutex_unlock(&rdev->devlist_mtx);
203 cfg80211_unlock_rdev(rdev);
204 return err;
205}
206
207int cfg80211_mgd_wext_giwessid(struct net_device *dev,
208 struct iw_request_info *info,
209 struct iw_point *data, char *ssid)
210{
211 struct wireless_dev *wdev = dev->ieee80211_ptr;
212
213 /* call only for station! */
214 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION))
215 return -EINVAL;
216
217 data->flags = 0;
218
219 wdev_lock(wdev);
220 if (wdev->current_bss) {
221 const u8 *ie = ieee80211_bss_get_ie(&wdev->current_bss->pub,
222 WLAN_EID_SSID);
223 if (ie) {
224 data->flags = 1;
225 data->length = ie[1];
226 memcpy(ssid, ie + 2, data->length);
227 }
228 } else if (wdev->wext.connect.ssid && wdev->wext.connect.ssid_len) {
229 data->flags = 1;
230 data->length = wdev->wext.connect.ssid_len;
231 memcpy(ssid, wdev->wext.connect.ssid, data->length);
232 } else
233 data->flags = 0;
234 wdev_unlock(wdev);
235
236 return 0;
237}
238
239int cfg80211_mgd_wext_siwap(struct net_device *dev,
240 struct iw_request_info *info,
241 struct sockaddr *ap_addr, char *extra)
242{
243 struct wireless_dev *wdev = dev->ieee80211_ptr;
244 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
245 u8 *bssid = ap_addr->sa_data;
246 int err;
247
248 /* call only for station! */
249 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION))
250 return -EINVAL;
251
252 if (ap_addr->sa_family != ARPHRD_ETHER)
253 return -EINVAL;
254
255 /* automatic mode */
256 if (is_zero_ether_addr(bssid) || is_broadcast_ether_addr(bssid))
257 bssid = NULL;
258
259 cfg80211_lock_rdev(rdev);
260 mutex_lock(&rdev->devlist_mtx);
261 wdev_lock(wdev);
262
263 if (wdev->sme_state != CFG80211_SME_IDLE) {
264 err = 0;
265 /* both automatic */
266 if (!bssid && !wdev->wext.connect.bssid)
267 goto out;
268
269 /* fixed already - and no change */
270 if (wdev->wext.connect.bssid && bssid &&
271 compare_ether_addr(bssid, wdev->wext.connect.bssid) == 0)
272 goto out;
273
274 err = __cfg80211_disconnect(rdev, dev,
275 WLAN_REASON_DEAUTH_LEAVING, false);
276 if (err)
277 goto out;
278 }
279
280 if (bssid) {
281 memcpy(wdev->wext.bssid, bssid, ETH_ALEN);
282 wdev->wext.connect.bssid = wdev->wext.bssid;
283 } else
284 wdev->wext.connect.bssid = NULL;
285
286 err = cfg80211_mgd_wext_connect(rdev, wdev);
287 out:
288 wdev_unlock(wdev);
289 mutex_unlock(&rdev->devlist_mtx);
290 cfg80211_unlock_rdev(rdev);
291 return err;
292}
293
294int cfg80211_mgd_wext_giwap(struct net_device *dev,
295 struct iw_request_info *info,
296 struct sockaddr *ap_addr, char *extra)
297{
298 struct wireless_dev *wdev = dev->ieee80211_ptr;
299
300 /* call only for station! */
301 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION))
302 return -EINVAL;
303
304 ap_addr->sa_family = ARPHRD_ETHER;
305
306 wdev_lock(wdev);
307 if (wdev->current_bss)
308 memcpy(ap_addr->sa_data, wdev->current_bss->pub.bssid, ETH_ALEN);
309 else if (wdev->wext.connect.bssid)
310 memcpy(ap_addr->sa_data, wdev->wext.connect.bssid, ETH_ALEN);
311 else
312 memset(ap_addr->sa_data, 0, ETH_ALEN);
313 wdev_unlock(wdev);
314
315 return 0;
316}
317
318int cfg80211_wext_siwgenie(struct net_device *dev,
319 struct iw_request_info *info,
320 struct iw_point *data, char *extra)
321{
322 struct wireless_dev *wdev = dev->ieee80211_ptr;
323 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
324 u8 *ie = extra;
325 int ie_len = data->length, err;
326
327 if (wdev->iftype != NL80211_IFTYPE_STATION)
328 return -EOPNOTSUPP;
329
330 if (!ie_len)
331 ie = NULL;
332
333 wdev_lock(wdev);
334
335 /* no change */
336 err = 0;
337 if (wdev->wext.ie_len == ie_len &&
338 memcmp(wdev->wext.ie, ie, ie_len) == 0)
339 goto out;
340
341 if (ie_len) {
342 ie = kmemdup(extra, ie_len, GFP_KERNEL);
343 if (!ie) {
344 err = -ENOMEM;
345 goto out;
346 }
347 } else
348 ie = NULL;
349
350 kfree(wdev->wext.ie);
351 wdev->wext.ie = ie;
352 wdev->wext.ie_len = ie_len;
353
354 if (wdev->sme_state != CFG80211_SME_IDLE) {
355 err = __cfg80211_disconnect(rdev, dev,
356 WLAN_REASON_DEAUTH_LEAVING, false);
357 if (err)
358 goto out;
359 }
360
361 /* userspace better not think we'll reconnect */
362 err = 0;
363 out:
364 wdev_unlock(wdev);
365 return err;
366}
367EXPORT_SYMBOL_GPL(cfg80211_wext_siwgenie);
368
369int cfg80211_wext_siwmlme(struct net_device *dev,
370 struct iw_request_info *info,
371 struct iw_point *data, char *extra)
372{
373 struct wireless_dev *wdev = dev->ieee80211_ptr;
374 struct iw_mlme *mlme = (struct iw_mlme *)extra;
375 struct cfg80211_registered_device *rdev;
376 int err;
377
378 if (!wdev)
379 return -EOPNOTSUPP;
380
381 rdev = wiphy_to_dev(wdev->wiphy);
382
383 if (wdev->iftype != NL80211_IFTYPE_STATION)
384 return -EINVAL;
385
386 if (mlme->addr.sa_family != ARPHRD_ETHER)
387 return -EINVAL;
388
389 wdev_lock(wdev);
390 switch (mlme->cmd) {
391 case IW_MLME_DEAUTH:
392 case IW_MLME_DISASSOC:
393 err = __cfg80211_disconnect(rdev, dev, mlme->reason_code,
394 true);
395 break;
396 default:
397 err = -EOPNOTSUPP;
398 break;
399 }
400 wdev_unlock(wdev);
401
402 return err;
403}
404EXPORT_SYMBOL_GPL(cfg80211_wext_siwmlme);
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