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8#include <linux/export.h>
9#include <linux/etherdevice.h>
10#include <linux/if_arp.h>
11#include <linux/slab.h>
12#include <net/cfg80211.h>
13#include <net/cfg80211-wext.h>
14#include "wext-compat.h"
15#include "nl80211.h"
16
17int cfg80211_mgd_wext_connect(struct cfg80211_registered_device *rdev,
18 struct wireless_dev *wdev)
19{
20 struct cfg80211_cached_keys *ck = NULL;
21 const u8 *prev_bssid = NULL;
22 int err, i;
23
24 ASSERT_RDEV_LOCK(rdev);
25 ASSERT_WDEV_LOCK(wdev);
26
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;
32
33
34 wdev->wext.connect.bg_scan_period = -1;
35
36 if (wdev->wext.keys) {
37 wdev->wext.keys->def = wdev->wext.default_key;
38 wdev->wext.keys->defmgmt = wdev->wext.default_mgmt_key;
39 if (wdev->wext.default_key != -1)
40 wdev->wext.connect.privacy = true;
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 }
53
54 if (wdev->wext.prev_bssid_valid)
55 prev_bssid = wdev->wext.prev_bssid;
56
57 err = __cfg80211_connect(rdev, wdev->netdev,
58 &wdev->wext.connect, ck, prev_bssid);
59 if (err)
60 kfree(ck);
61
62 return err;
63}
64
65int cfg80211_mgd_wext_siwfreq(struct net_device *dev,
66 struct iw_request_info *info,
67 struct iw_freq *wextfreq, char *extra)
68{
69 struct wireless_dev *wdev = dev->ieee80211_ptr;
70 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
71 struct ieee80211_channel *chan = NULL;
72 int err, freq;
73
74
75 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION))
76 return -EINVAL;
77
78 freq = cfg80211_wext_freq(wdev->wiphy, wextfreq);
79 if (freq < 0)
80 return freq;
81
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 }
89
90 cfg80211_lock_rdev(rdev);
91 mutex_lock(&rdev->devlist_mtx);
92 wdev_lock(wdev);
93
94 if (wdev->sme_state != CFG80211_SME_IDLE) {
95 bool event = true;
96
97 if (wdev->wext.connect.channel == chan) {
98 err = 0;
99 goto out;
100 }
101
102
103 if (wdev->wext.connect.ssid_len)
104 event = false;
105 err = __cfg80211_disconnect(rdev, dev,
106 WLAN_REASON_DEAUTH_LEAVING, event);
107 if (err)
108 goto out;
109 }
110
111
112 wdev->wext.connect.channel = chan;
113
114
115
116
117
118
119
120
121 if (chan && !wdev->wext.connect.ssid_len) {
122 err = cfg80211_set_monitor_channel(rdev, freq, NL80211_CHAN_NO_HT);
123 goto out;
124 }
125
126 err = cfg80211_mgd_wext_connect(rdev, wdev);
127 out:
128 wdev_unlock(wdev);
129 mutex_unlock(&rdev->devlist_mtx);
130 cfg80211_unlock_rdev(rdev);
131 return err;
132}
133
134int cfg80211_mgd_wext_giwfreq(struct net_device *dev,
135 struct iw_request_info *info,
136 struct iw_freq *freq, char *extra)
137{
138 struct wireless_dev *wdev = dev->ieee80211_ptr;
139 struct ieee80211_channel *chan = NULL;
140
141
142 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION))
143 return -EINVAL;
144
145 wdev_lock(wdev);
146 if (wdev->current_bss)
147 chan = wdev->current_bss->pub.channel;
148 else if (wdev->wext.connect.channel)
149 chan = wdev->wext.connect.channel;
150 wdev_unlock(wdev);
151
152 if (chan) {
153 freq->m = chan->center_freq;
154 freq->e = 6;
155 return 0;
156 }
157
158
159 return -EINVAL;
160}
161
162int cfg80211_mgd_wext_siwessid(struct net_device *dev,
163 struct iw_request_info *info,
164 struct iw_point *data, char *ssid)
165{
166 struct wireless_dev *wdev = dev->ieee80211_ptr;
167 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
168 size_t len = data->length;
169 int err;
170
171
172 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION))
173 return -EINVAL;
174
175 if (!data->flags)
176 len = 0;
177
178
179 if (len > 0 && ssid[len - 1] == '\0')
180 len--;
181
182 cfg80211_lock_rdev(rdev);
183 mutex_lock(&rdev->devlist_mtx);
184 wdev_lock(wdev);
185
186 err = 0;
187
188 if (wdev->sme_state != CFG80211_SME_IDLE) {
189 bool event = true;
190
191 if (wdev->wext.connect.ssid && len &&
192 len == wdev->wext.connect.ssid_len &&
193 memcmp(wdev->wext.connect.ssid, ssid, len) == 0)
194 goto out;
195
196
197 if (len)
198 event = false;
199 err = __cfg80211_disconnect(rdev, dev,
200 WLAN_REASON_DEAUTH_LEAVING, event);
201 if (err)
202 goto out;
203 }
204
205 wdev->wext.prev_bssid_valid = false;
206 wdev->wext.connect.ssid = wdev->wext.ssid;
207 memcpy(wdev->wext.ssid, ssid, len);
208 wdev->wext.connect.ssid_len = len;
209
210 wdev->wext.connect.crypto.control_port = false;
211 wdev->wext.connect.crypto.control_port_ethertype =
212 cpu_to_be16(ETH_P_PAE);
213
214 err = cfg80211_mgd_wext_connect(rdev, wdev);
215 out:
216 wdev_unlock(wdev);
217 mutex_unlock(&rdev->devlist_mtx);
218 cfg80211_unlock_rdev(rdev);
219 return err;
220}
221
222int 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
229 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION))
230 return -EINVAL;
231
232 data->flags = 0;
233
234 wdev_lock(wdev);
235 if (wdev->current_bss) {
236 const u8 *ie = ieee80211_bss_get_ie(&wdev->current_bss->pub,
237 WLAN_EID_SSID);
238 if (ie) {
239 data->flags = 1;
240 data->length = ie[1];
241 memcpy(ssid, ie + 2, data->length);
242 }
243 } else if (wdev->wext.connect.ssid && wdev->wext.connect.ssid_len) {
244 data->flags = 1;
245 data->length = wdev->wext.connect.ssid_len;
246 memcpy(ssid, wdev->wext.connect.ssid, data->length);
247 }
248 wdev_unlock(wdev);
249
250 return 0;
251}
252
253int cfg80211_mgd_wext_siwap(struct net_device *dev,
254 struct iw_request_info *info,
255 struct sockaddr *ap_addr, char *extra)
256{
257 struct wireless_dev *wdev = dev->ieee80211_ptr;
258 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
259 u8 *bssid = ap_addr->sa_data;
260 int err;
261
262
263 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION))
264 return -EINVAL;
265
266 if (ap_addr->sa_family != ARPHRD_ETHER)
267 return -EINVAL;
268
269
270 if (is_zero_ether_addr(bssid) || is_broadcast_ether_addr(bssid))
271 bssid = NULL;
272
273 cfg80211_lock_rdev(rdev);
274 mutex_lock(&rdev->devlist_mtx);
275 wdev_lock(wdev);
276
277 if (wdev->sme_state != CFG80211_SME_IDLE) {
278 err = 0;
279
280 if (!bssid && !wdev->wext.connect.bssid)
281 goto out;
282
283
284 if (wdev->wext.connect.bssid && bssid &&
285 ether_addr_equal(bssid, wdev->wext.connect.bssid))
286 goto out;
287
288 err = __cfg80211_disconnect(rdev, dev,
289 WLAN_REASON_DEAUTH_LEAVING, false);
290 if (err)
291 goto out;
292 }
293
294 if (bssid) {
295 memcpy(wdev->wext.bssid, bssid, ETH_ALEN);
296 wdev->wext.connect.bssid = wdev->wext.bssid;
297 } else
298 wdev->wext.connect.bssid = NULL;
299
300 err = cfg80211_mgd_wext_connect(rdev, wdev);
301 out:
302 wdev_unlock(wdev);
303 mutex_unlock(&rdev->devlist_mtx);
304 cfg80211_unlock_rdev(rdev);
305 return err;
306}
307
308int 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
315 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION))
316 return -EINVAL;
317
318 ap_addr->sa_family = ARPHRD_ETHER;
319
320 wdev_lock(wdev);
321 if (wdev->current_bss)
322 memcpy(ap_addr->sa_data, wdev->current_bss->pub.bssid, ETH_ALEN);
323 else
324 memset(ap_addr->sa_data, 0, ETH_ALEN);
325 wdev_unlock(wdev);
326
327 return 0;
328}
329
330int 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;
335 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
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
345 wdev_lock(wdev);
346
347
348 err = 0;
349 if (wdev->wext.ie_len == ie_len &&
350 memcmp(wdev->wext.ie, ie, ie_len) == 0)
351 goto out;
352
353 if (ie_len) {
354 ie = kmemdup(extra, ie_len, GFP_KERNEL);
355 if (!ie) {
356 err = -ENOMEM;
357 goto out;
358 }
359 } else
360 ie = NULL;
361
362 kfree(wdev->wext.ie);
363 wdev->wext.ie = ie;
364 wdev->wext.ie_len = ie_len;
365
366 if (wdev->sme_state != CFG80211_SME_IDLE) {
367 err = __cfg80211_disconnect(rdev, dev,
368 WLAN_REASON_DEAUTH_LEAVING, false);
369 if (err)
370 goto out;
371 }
372
373
374 err = 0;
375 out:
376 wdev_unlock(wdev);
377 return err;
378}
379
380int 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;
387 int err;
388
389 if (!wdev)
390 return -EOPNOTSUPP;
391
392 rdev = wiphy_to_dev(wdev->wiphy);
393
394 if (wdev->iftype != NL80211_IFTYPE_STATION)
395 return -EINVAL;
396
397 if (mlme->addr.sa_family != ARPHRD_ETHER)
398 return -EINVAL;
399
400 wdev_lock(wdev);
401 switch (mlme->cmd) {
402 case IW_MLME_DEAUTH:
403 case IW_MLME_DISASSOC:
404 err = __cfg80211_disconnect(rdev, dev, mlme->reason_code,
405 true);
406 break;
407 default:
408 err = -EOPNOTSUPP;
409 break;
410 }
411 wdev_unlock(wdev);
412
413 return err;
414}
415
