[PATCH] zd1211rw: fix filter for PSPOLL frames
[deliverable/linux.git] / net / ieee80211 / softmac / ieee80211softmac_wx.c
CommitLineData
370121e5
JB
1/*
2 * This file contains our _wx handlers. Make sure you EXPORT_SYMBOL_GPL them
4855d25b 3 *
79859051
JB
4 * Copyright (c) 2005, 2006 Johannes Berg <johannes@sipsolutions.net>
5 * Joseph Jezak <josejx@gentoo.org>
6 * Larry Finger <Larry.Finger@lwfinger.net>
7 * Danny van Dyk <kugelfang@gentoo.org>
8 * Michael Buesch <mbuesch@freenet.de>
4855d25b
JB
9 *
10 * This program is free software; you can redistribute it and/or modify it
11 * under the terms of version 2 of the GNU General Public License as
12 * published by the Free Software Foundation.
13 *
14 * This program is distributed in the hope that it will be useful, but WITHOUT
15 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
16 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
17 * more details.
18 *
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
22 *
23 * The full GNU General Public License is included in this distribution in the
24 * file called COPYING.
370121e5
JB
25 */
26
27#include "ieee80211softmac_priv.h"
28
29#include <net/iw_handler.h>
818667f7
JB
30/* for is_broadcast_ether_addr and is_zero_ether_addr */
31#include <linux/etherdevice.h>
370121e5
JB
32
33int
34ieee80211softmac_wx_trigger_scan(struct net_device *net_dev,
35 struct iw_request_info *info,
36 union iwreq_data *data,
37 char *extra)
38{
39 struct ieee80211softmac_device *sm = ieee80211_priv(net_dev);
40 return ieee80211softmac_start_scan(sm);
41}
42EXPORT_SYMBOL_GPL(ieee80211softmac_wx_trigger_scan);
43
44
ba2f8c18 45/* if we're still scanning, return -EAGAIN so that userspace tools
46 * can get the complete scan results, otherwise return 0. */
370121e5
JB
47int
48ieee80211softmac_wx_get_scan_results(struct net_device *net_dev,
49 struct iw_request_info *info,
50 union iwreq_data *data,
51 char *extra)
52{
ba2f8c18 53 unsigned long flags;
370121e5 54 struct ieee80211softmac_device *sm = ieee80211_priv(net_dev);
ba2f8c18 55
56 spin_lock_irqsave(&sm->lock, flags);
57 if (sm->scanning) {
58 spin_unlock_irqrestore(&sm->lock, flags);
59 return -EAGAIN;
60 }
61 spin_unlock_irqrestore(&sm->lock, flags);
370121e5
JB
62 return ieee80211_wx_get_scan(sm->ieee, info, data, extra);
63}
64EXPORT_SYMBOL_GPL(ieee80211softmac_wx_get_scan_results);
65
66int
67ieee80211softmac_wx_set_essid(struct net_device *net_dev,
68 struct iw_request_info *info,
69 union iwreq_data *data,
70 char *extra)
71{
72 struct ieee80211softmac_device *sm = ieee80211_priv(net_dev);
cb74c432
JJ
73 struct ieee80211softmac_network *n;
74 struct ieee80211softmac_auth_queue_item *authptr;
370121e5 75 int length = 0;
7c28ad2d
MB
76
77 mutex_lock(&sm->associnfo.mutex);
cb74c432
JJ
78
79 /* Check if we're already associating to this or another network
80 * If it's another network, cancel and start over with our new network
81 * If it's our network, ignore the change, we're already doing it!
82 */
7c28ad2d 83 if((sm->associnfo.associating || sm->associnfo.associated) &&
b978d027 84 (data->essid.flags && data->essid.length)) {
cb74c432
JJ
85 /* Get the associating network */
86 n = ieee80211softmac_get_network_by_bssid(sm, sm->associnfo.bssid);
b978d027 87 if(n && n->essid.len == data->essid.length &&
cb74c432
JJ
88 !memcmp(n->essid.data, extra, n->essid.len)) {
89 dprintk(KERN_INFO PFX "Already associating or associated to "MAC_FMT"\n",
90 MAC_ARG(sm->associnfo.bssid));
7c28ad2d 91 goto out;
cb74c432
JJ
92 } else {
93 dprintk(KERN_INFO PFX "Canceling existing associate request!\n");
cb74c432
JJ
94 /* Cancel assoc work */
95 cancel_delayed_work(&sm->associnfo.work);
96 /* We don't have to do this, but it's a little cleaner */
97 list_for_each_entry(authptr, &sm->auth_queue, list)
98 cancel_delayed_work(&authptr->work);
99 sm->associnfo.bssvalid = 0;
100 sm->associnfo.bssfixed = 0;
cb74c432 101 flush_scheduled_work();
7c28ad2d
MB
102 sm->associnfo.associating = 0;
103 sm->associnfo.associated = 0;
cb74c432
JJ
104 }
105 }
106
107
370121e5 108 sm->associnfo.static_essid = 0;
cb74c432 109 sm->associnfo.assoc_wait = 0;
370121e5 110
b978d027
LF
111 if (data->essid.flags && data->essid.length) {
112 length = min((int)data->essid.length, IW_ESSID_MAX_SIZE);
370121e5
JB
113 if (length) {
114 memcpy(sm->associnfo.req_essid.data, extra, length);
115 sm->associnfo.static_essid = 1;
116 }
117 }
370121e5
JB
118
119 /* set our requested ESSID length.
120 * If applicable, we have already copied the data in */
121 sm->associnfo.req_essid.len = length;
122
7c28ad2d 123 sm->associnfo.associating = 1;
370121e5 124 /* queue lower level code to do work (if necessary) */
c4028958 125 schedule_delayed_work(&sm->associnfo.work, 0);
7c28ad2d
MB
126out:
127 mutex_unlock(&sm->associnfo.mutex);
370121e5 128
370121e5
JB
129 return 0;
130}
131EXPORT_SYMBOL_GPL(ieee80211softmac_wx_set_essid);
132
133int
134ieee80211softmac_wx_get_essid(struct net_device *net_dev,
135 struct iw_request_info *info,
136 union iwreq_data *data,
137 char *extra)
138{
139 struct ieee80211softmac_device *sm = ieee80211_priv(net_dev);
370121e5 140
7c28ad2d 141 mutex_lock(&sm->associnfo.mutex);
370121e5
JB
142 /* If all fails, return ANY (empty) */
143 data->essid.length = 0;
144 data->essid.flags = 0; /* active */
64265651 145
370121e5
JB
146 /* If we have a statically configured ESSID then return it */
147 if (sm->associnfo.static_essid) {
148 data->essid.length = sm->associnfo.req_essid.len;
149 data->essid.flags = 1; /* active */
150 memcpy(extra, sm->associnfo.req_essid.data, sm->associnfo.req_essid.len);
151 }
64265651 152
370121e5 153 /* If we're associating/associated, return that */
7c28ad2d 154 if (sm->associnfo.associated || sm->associnfo.associating) {
370121e5
JB
155 data->essid.length = sm->associnfo.associate_essid.len;
156 data->essid.flags = 1; /* active */
157 memcpy(extra, sm->associnfo.associate_essid.data, sm->associnfo.associate_essid.len);
158 }
7c28ad2d
MB
159 mutex_unlock(&sm->associnfo.mutex);
160
370121e5
JB
161 return 0;
162}
163EXPORT_SYMBOL_GPL(ieee80211softmac_wx_get_essid);
164
165int
166ieee80211softmac_wx_set_rate(struct net_device *net_dev,
167 struct iw_request_info *info,
168 union iwreq_data *data,
169 char *extra)
170{
171 struct ieee80211softmac_device *mac = ieee80211_priv(net_dev);
172 struct ieee80211_device *ieee = mac->ieee;
173 unsigned long flags;
174 s32 in_rate = data->bitrate.value;
175 u8 rate;
176 int is_ofdm = 0;
177 int err = -EINVAL;
178
179 if (in_rate == -1) {
bb52a653
LF
180 if (ieee->modulation & IEEE80211_OFDM_MODULATION)
181 in_rate = 24000000;
2638fed7 182 else
bb52a653 183 in_rate = 11000000;
370121e5
JB
184 }
185
186 switch (in_rate) {
187 case 1000000:
188 rate = IEEE80211_CCK_RATE_1MB;
189 break;
190 case 2000000:
191 rate = IEEE80211_CCK_RATE_2MB;
192 break;
193 case 5500000:
194 rate = IEEE80211_CCK_RATE_5MB;
195 break;
196 case 11000000:
197 rate = IEEE80211_CCK_RATE_11MB;
198 break;
199 case 6000000:
200 rate = IEEE80211_OFDM_RATE_6MB;
201 is_ofdm = 1;
202 break;
203 case 9000000:
204 rate = IEEE80211_OFDM_RATE_9MB;
205 is_ofdm = 1;
206 break;
207 case 12000000:
208 rate = IEEE80211_OFDM_RATE_12MB;
209 is_ofdm = 1;
210 break;
211 case 18000000:
212 rate = IEEE80211_OFDM_RATE_18MB;
213 is_ofdm = 1;
214 break;
215 case 24000000:
216 rate = IEEE80211_OFDM_RATE_24MB;
217 is_ofdm = 1;
218 break;
219 case 36000000:
220 rate = IEEE80211_OFDM_RATE_36MB;
221 is_ofdm = 1;
222 break;
223 case 48000000:
224 rate = IEEE80211_OFDM_RATE_48MB;
225 is_ofdm = 1;
226 break;
227 case 54000000:
228 rate = IEEE80211_OFDM_RATE_54MB;
229 is_ofdm = 1;
230 break;
231 default:
232 goto out;
233 }
234
235 spin_lock_irqsave(&mac->lock, flags);
236
237 /* Check if correct modulation for this PHY. */
238 if (is_ofdm && !(ieee->modulation & IEEE80211_OFDM_MODULATION))
239 goto out_unlock;
240
8462fe3c
DD
241 mac->txrates.user_rate = rate;
242 ieee80211softmac_recalc_txrates(mac);
370121e5
JB
243 err = 0;
244
64265651 245out_unlock:
370121e5
JB
246 spin_unlock_irqrestore(&mac->lock, flags);
247out:
248 return err;
249}
250EXPORT_SYMBOL_GPL(ieee80211softmac_wx_set_rate);
251
252int
253ieee80211softmac_wx_get_rate(struct net_device *net_dev,
254 struct iw_request_info *info,
255 union iwreq_data *data,
256 char *extra)
257{
258 struct ieee80211softmac_device *mac = ieee80211_priv(net_dev);
259 unsigned long flags;
260 int err = -EINVAL;
261
262 spin_lock_irqsave(&mac->lock, flags);
6bbdce5a
JL
263
264 if (unlikely(!mac->running)) {
265 err = -ENODEV;
266 goto out_unlock;
267 }
268
370121e5
JB
269 switch (mac->txrates.default_rate) {
270 case IEEE80211_CCK_RATE_1MB:
271 data->bitrate.value = 1000000;
272 break;
273 case IEEE80211_CCK_RATE_2MB:
274 data->bitrate.value = 2000000;
275 break;
276 case IEEE80211_CCK_RATE_5MB:
277 data->bitrate.value = 5500000;
278 break;
279 case IEEE80211_CCK_RATE_11MB:
280 data->bitrate.value = 11000000;
281 break;
282 case IEEE80211_OFDM_RATE_6MB:
283 data->bitrate.value = 6000000;
284 break;
285 case IEEE80211_OFDM_RATE_9MB:
286 data->bitrate.value = 9000000;
287 break;
288 case IEEE80211_OFDM_RATE_12MB:
289 data->bitrate.value = 12000000;
290 break;
291 case IEEE80211_OFDM_RATE_18MB:
292 data->bitrate.value = 18000000;
293 break;
294 case IEEE80211_OFDM_RATE_24MB:
295 data->bitrate.value = 24000000;
296 break;
297 case IEEE80211_OFDM_RATE_36MB:
298 data->bitrate.value = 36000000;
299 break;
300 case IEEE80211_OFDM_RATE_48MB:
301 data->bitrate.value = 48000000;
302 break;
303 case IEEE80211_OFDM_RATE_54MB:
304 data->bitrate.value = 54000000;
305 break;
306 default:
307 assert(0);
308 goto out_unlock;
309 }
310 err = 0;
311out_unlock:
312 spin_unlock_irqrestore(&mac->lock, flags);
313
314 return err;
315}
316EXPORT_SYMBOL_GPL(ieee80211softmac_wx_get_rate);
317
318int
319ieee80211softmac_wx_get_wap(struct net_device *net_dev,
320 struct iw_request_info *info,
321 union iwreq_data *data,
322 char *extra)
323{
324 struct ieee80211softmac_device *mac = ieee80211_priv(net_dev);
325 int err = 0;
370121e5 326
7c28ad2d 327 mutex_lock(&mac->associnfo.mutex);
370121e5
JB
328 if (mac->associnfo.bssvalid)
329 memcpy(data->ap_addr.sa_data, mac->associnfo.bssid, ETH_ALEN);
330 else
331 memset(data->ap_addr.sa_data, 0xff, ETH_ALEN);
332 data->ap_addr.sa_family = ARPHRD_ETHER;
7c28ad2d
MB
333 mutex_unlock(&mac->associnfo.mutex);
334
370121e5
JB
335 return err;
336}
337EXPORT_SYMBOL_GPL(ieee80211softmac_wx_get_wap);
338
339int
340ieee80211softmac_wx_set_wap(struct net_device *net_dev,
341 struct iw_request_info *info,
342 union iwreq_data *data,
343 char *extra)
344{
345 struct ieee80211softmac_device *mac = ieee80211_priv(net_dev);
370121e5
JB
346
347 /* sanity check */
348 if (data->ap_addr.sa_family != ARPHRD_ETHER) {
349 return -EINVAL;
350 }
351
7c28ad2d 352 mutex_lock(&mac->associnfo.mutex);
818667f7
JB
353 if (is_broadcast_ether_addr(data->ap_addr.sa_data)) {
354 /* the bssid we have is not to be fixed any longer,
355 * and we should reassociate to the best AP. */
356 mac->associnfo.bssfixed = 0;
357 /* force reassociation */
358 mac->associnfo.bssvalid = 0;
7c28ad2d 359 if (mac->associnfo.associated)
c4028958 360 schedule_delayed_work(&mac->associnfo.work, 0);
818667f7
JB
361 } else if (is_zero_ether_addr(data->ap_addr.sa_data)) {
362 /* the bssid we have is no longer fixed */
363 mac->associnfo.bssfixed = 0;
64265651 364 } else {
370121e5 365 if (!memcmp(mac->associnfo.bssid, data->ap_addr.sa_data, ETH_ALEN)) {
7c28ad2d 366 if (mac->associnfo.associating || mac->associnfo.associated) {
370121e5
JB
367 /* bssid unchanged and associated or associating - just return */
368 goto out;
369 }
370 } else {
371 /* copy new value in data->ap_addr.sa_data to bssid */
372 memcpy(mac->associnfo.bssid, data->ap_addr.sa_data, ETH_ALEN);
818667f7
JB
373 }
374 /* tell the other code that this bssid should be used no matter what */
375 mac->associnfo.bssfixed = 1;
370121e5 376 /* queue associate if new bssid or (old one again and not associated) */
c4028958 377 schedule_delayed_work(&mac->associnfo.work, 0);
64265651 378 }
370121e5 379
818667f7 380 out:
7c28ad2d
MB
381 mutex_unlock(&mac->associnfo.mutex);
382
370121e5
JB
383 return 0;
384}
385EXPORT_SYMBOL_GPL(ieee80211softmac_wx_set_wap);
386
387int
388ieee80211softmac_wx_set_genie(struct net_device *dev,
389 struct iw_request_info *info,
390 union iwreq_data *wrqu,
391 char *extra)
392{
393 struct ieee80211softmac_device *mac = ieee80211_priv(dev);
394 unsigned long flags;
395 int err = 0;
396 char *buf;
397 int i;
7c28ad2d
MB
398
399 mutex_lock(&mac->associnfo.mutex);
370121e5
JB
400 spin_lock_irqsave(&mac->lock, flags);
401 /* bleh. shouldn't be locked for that kmalloc... */
402
403 if (wrqu->data.length) {
404 if ((wrqu->data.length < 2) || (extra[1]+2 != wrqu->data.length)) {
405 /* this is an IE, so the length must be
406 * correct. Is it possible though that
407 * more than one IE is passed in?
408 */
409 err = -EINVAL;
410 goto out;
411 }
412 if (mac->wpa.IEbuflen <= wrqu->data.length) {
413 buf = kmalloc(wrqu->data.length, GFP_ATOMIC);
414 if (!buf) {
415 err = -ENOMEM;
416 goto out;
417 }
418 kfree(mac->wpa.IE);
419 mac->wpa.IE = buf;
420 mac->wpa.IEbuflen = wrqu->data.length;
421 }
422 memcpy(mac->wpa.IE, extra, wrqu->data.length);
423 dprintk(KERN_INFO PFX "generic IE set to ");
424 for (i=0;i<wrqu->data.length;i++)
7bd6b918 425 dprintk("%.2x", (u8)mac->wpa.IE[i]);
370121e5
JB
426 dprintk("\n");
427 mac->wpa.IElen = wrqu->data.length;
428 } else {
429 kfree(mac->wpa.IE);
430 mac->wpa.IE = NULL;
431 mac->wpa.IElen = 0;
432 mac->wpa.IEbuflen = 0;
433 }
434
64265651 435 out:
370121e5 436 spin_unlock_irqrestore(&mac->lock, flags);
7c28ad2d
MB
437 mutex_unlock(&mac->associnfo.mutex);
438
370121e5
JB
439 return err;
440}
441EXPORT_SYMBOL_GPL(ieee80211softmac_wx_set_genie);
442
443int
444ieee80211softmac_wx_get_genie(struct net_device *dev,
445 struct iw_request_info *info,
446 union iwreq_data *wrqu,
447 char *extra)
448{
449 struct ieee80211softmac_device *mac = ieee80211_priv(dev);
450 unsigned long flags;
451 int err = 0;
452 int space = wrqu->data.length;
7c28ad2d
MB
453
454 mutex_lock(&mac->associnfo.mutex);
370121e5 455 spin_lock_irqsave(&mac->lock, flags);
64265651 456
370121e5 457 wrqu->data.length = 0;
64265651 458
370121e5
JB
459 if (mac->wpa.IE && mac->wpa.IElen) {
460 wrqu->data.length = mac->wpa.IElen;
461 if (mac->wpa.IElen <= space)
462 memcpy(extra, mac->wpa.IE, mac->wpa.IElen);
463 else
464 err = -E2BIG;
465 }
466 spin_unlock_irqrestore(&mac->lock, flags);
0c234ae6 467 mutex_unlock(&mac->associnfo.mutex);
7c28ad2d 468
370121e5
JB
469 return err;
470}
471EXPORT_SYMBOL_GPL(ieee80211softmac_wx_get_genie);
472
9a1771e8
JB
473int
474ieee80211softmac_wx_set_mlme(struct net_device *dev,
475 struct iw_request_info *info,
476 union iwreq_data *wrqu,
477 char *extra)
478{
479 struct ieee80211softmac_device *mac = ieee80211_priv(dev);
480 struct iw_mlme *mlme = (struct iw_mlme *)extra;
481 u16 reason = cpu_to_le16(mlme->reason_code);
482 struct ieee80211softmac_network *net;
7c28ad2d
MB
483 int err = -EINVAL;
484
485 mutex_lock(&mac->associnfo.mutex);
9a1771e8
JB
486
487 if (memcmp(mac->associnfo.bssid, mlme->addr.sa_data, ETH_ALEN)) {
488 printk(KERN_DEBUG PFX "wx_set_mlme: requested operation on net we don't use\n");
7c28ad2d 489 goto out;
9a1771e8
JB
490 }
491
492 switch (mlme->cmd) {
493 case IW_MLME_DEAUTH:
494 net = ieee80211softmac_get_network_by_bssid_locked(mac, mlme->addr.sa_data);
495 if (!net) {
496 printk(KERN_DEBUG PFX "wx_set_mlme: we should know the net here...\n");
7c28ad2d 497 goto out;
9a1771e8 498 }
cc8ce997
MA
499 err = ieee80211softmac_deauth_req(mac, net, reason);
500 goto out;
9a1771e8 501 case IW_MLME_DISASSOC:
6d92f83f 502 ieee80211softmac_send_disassoc_req(mac, reason);
7c28ad2d
MB
503 mac->associnfo.associated = 0;
504 mac->associnfo.associating = 0;
505 err = 0;
506 goto out;
9a1771e8 507 default:
7c28ad2d 508 err = -EOPNOTSUPP;
9a1771e8 509 }
7c28ad2d
MB
510
511out:
512 mutex_unlock(&mac->associnfo.mutex);
513
514 return err;
9a1771e8
JB
515}
516EXPORT_SYMBOL_GPL(ieee80211softmac_wx_set_mlme);
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