mac80211: move dynamic PS timeout to hardware config
[linux-2.6.git] / net / mac80211 / wext.c
1 /*
2  * Copyright 2002-2005, Instant802 Networks, Inc.
3  * Copyright 2005-2006, Devicescape Software, Inc.
4  *
5  * This program is free software; you can redistribute it and/or modify
6  * it under the terms of the GNU General Public License version 2 as
7  * published by the Free Software Foundation.
8  */
9
10 #include <linux/module.h>
11 #include <linux/init.h>
12 #include <linux/netdevice.h>
13 #include <linux/types.h>
14 #include <linux/slab.h>
15 #include <linux/skbuff.h>
16 #include <linux/etherdevice.h>
17 #include <linux/if_arp.h>
18 #include <linux/wireless.h>
19 #include <net/iw_handler.h>
20 #include <asm/uaccess.h>
21
22 #include <net/mac80211.h>
23 #include "ieee80211_i.h"
24 #include "led.h"
25 #include "rate.h"
26 #include "wpa.h"
27 #include "aes_ccm.h"
28
29
30 static int ieee80211_set_encryption(struct ieee80211_sub_if_data *sdata, u8 *sta_addr,
31                                     int idx, int alg, int remove,
32                                     int set_tx_key, const u8 *_key,
33                                     size_t key_len)
34 {
35         struct ieee80211_local *local = sdata->local;
36         struct sta_info *sta;
37         struct ieee80211_key *key;
38         int err;
39
40         if (idx < 0 || idx >= NUM_DEFAULT_KEYS) {
41                 printk(KERN_DEBUG "%s: set_encrypt - invalid idx=%d\n",
42                        sdata->dev->name, idx);
43                 return -EINVAL;
44         }
45
46         if (remove) {
47                 rcu_read_lock();
48
49                 err = 0;
50
51                 if (is_broadcast_ether_addr(sta_addr)) {
52                         key = sdata->keys[idx];
53                 } else {
54                         sta = sta_info_get(local, sta_addr);
55                         if (!sta) {
56                                 err = -ENOENT;
57                                 goto out_unlock;
58                         }
59                         key = sta->key;
60                 }
61
62                 ieee80211_key_free(key);
63         } else {
64                 key = ieee80211_key_alloc(alg, idx, key_len, _key);
65                 if (!key)
66                         return -ENOMEM;
67
68                 sta = NULL;
69                 err = 0;
70
71                 rcu_read_lock();
72
73                 if (!is_broadcast_ether_addr(sta_addr)) {
74                         set_tx_key = 0;
75                         /*
76                          * According to the standard, the key index of a
77                          * pairwise key must be zero. However, some AP are
78                          * broken when it comes to WEP key indices, so we
79                          * work around this.
80                          */
81                         if (idx != 0 && alg != ALG_WEP) {
82                                 ieee80211_key_free(key);
83                                 err = -EINVAL;
84                                 goto out_unlock;
85                         }
86
87                         sta = sta_info_get(local, sta_addr);
88                         if (!sta) {
89                                 ieee80211_key_free(key);
90                                 err = -ENOENT;
91                                 goto out_unlock;
92                         }
93                 }
94
95                 if (alg == ALG_WEP &&
96                         key_len != LEN_WEP40 && key_len != LEN_WEP104) {
97                         ieee80211_key_free(key);
98                         err = -EINVAL;
99                         goto out_unlock;
100                 }
101
102                 ieee80211_key_link(key, sdata, sta);
103
104                 if (set_tx_key || (!sta && !sdata->default_key && key))
105                         ieee80211_set_default_key(sdata, idx);
106         }
107
108  out_unlock:
109         rcu_read_unlock();
110
111         return err;
112 }
113
114 static int ieee80211_ioctl_siwgenie(struct net_device *dev,
115                                     struct iw_request_info *info,
116                                     struct iw_point *data, char *extra)
117 {
118         struct ieee80211_sub_if_data *sdata;
119
120         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
121
122         if (sdata->flags & IEEE80211_SDATA_USERSPACE_MLME)
123                 return -EOPNOTSUPP;
124
125         if (sdata->vif.type == NL80211_IFTYPE_STATION ||
126             sdata->vif.type == NL80211_IFTYPE_ADHOC) {
127                 int ret = ieee80211_sta_set_extra_ie(sdata, extra, data->length);
128                 if (ret)
129                         return ret;
130                 sdata->u.sta.flags &= ~IEEE80211_STA_AUTO_BSSID_SEL;
131                 ieee80211_sta_req_auth(sdata, &sdata->u.sta);
132                 return 0;
133         }
134
135         return -EOPNOTSUPP;
136 }
137
138 static int ieee80211_ioctl_giwrange(struct net_device *dev,
139                                  struct iw_request_info *info,
140                                  struct iw_point *data, char *extra)
141 {
142         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
143         struct iw_range *range = (struct iw_range *) extra;
144         enum ieee80211_band band;
145         int c = 0;
146
147         data->length = sizeof(struct iw_range);
148         memset(range, 0, sizeof(struct iw_range));
149
150         range->we_version_compiled = WIRELESS_EXT;
151         range->we_version_source = 21;
152         range->retry_capa = IW_RETRY_LIMIT;
153         range->retry_flags = IW_RETRY_LIMIT;
154         range->min_retry = 0;
155         range->max_retry = 255;
156         range->min_rts = 0;
157         range->max_rts = 2347;
158         range->min_frag = 256;
159         range->max_frag = 2346;
160
161         range->encoding_size[0] = 5;
162         range->encoding_size[1] = 13;
163         range->num_encoding_sizes = 2;
164         range->max_encoding_tokens = NUM_DEFAULT_KEYS;
165
166         if (local->hw.flags & IEEE80211_HW_SIGNAL_UNSPEC ||
167             local->hw.flags & IEEE80211_HW_SIGNAL_DB)
168                 range->max_qual.level = local->hw.max_signal;
169         else if  (local->hw.flags & IEEE80211_HW_SIGNAL_DBM)
170                 range->max_qual.level = -110;
171         else
172                 range->max_qual.level = 0;
173
174         if (local->hw.flags & IEEE80211_HW_NOISE_DBM)
175                 range->max_qual.noise = -110;
176         else
177                 range->max_qual.noise = 0;
178
179         range->max_qual.qual = 100;
180         range->max_qual.updated = local->wstats_flags;
181
182         range->avg_qual.qual = 50;
183         /* not always true but better than nothing */
184         range->avg_qual.level = range->max_qual.level / 2;
185         range->avg_qual.noise = range->max_qual.noise / 2;
186         range->avg_qual.updated = local->wstats_flags;
187
188         range->enc_capa = IW_ENC_CAPA_WPA | IW_ENC_CAPA_WPA2 |
189                           IW_ENC_CAPA_CIPHER_TKIP | IW_ENC_CAPA_CIPHER_CCMP;
190
191
192         for (band = 0; band < IEEE80211_NUM_BANDS; band ++) {
193                 int i;
194                 struct ieee80211_supported_band *sband;
195
196                 sband = local->hw.wiphy->bands[band];
197
198                 if (!sband)
199                         continue;
200
201                 for (i = 0; i < sband->n_channels && c < IW_MAX_FREQUENCIES; i++) {
202                         struct ieee80211_channel *chan = &sband->channels[i];
203
204                         if (!(chan->flags & IEEE80211_CHAN_DISABLED)) {
205                                 range->freq[c].i =
206                                         ieee80211_frequency_to_channel(
207                                                 chan->center_freq);
208                                 range->freq[c].m = chan->center_freq;
209                                 range->freq[c].e = 6;
210                                 c++;
211                         }
212                 }
213         }
214         range->num_channels = c;
215         range->num_frequency = c;
216
217         IW_EVENT_CAPA_SET_KERNEL(range->event_capa);
218         IW_EVENT_CAPA_SET(range->event_capa, SIOCGIWAP);
219         IW_EVENT_CAPA_SET(range->event_capa, SIOCGIWSCAN);
220
221         range->scan_capa |= IW_SCAN_CAPA_ESSID;
222
223         return 0;
224 }
225
226
227 static int ieee80211_ioctl_siwfreq(struct net_device *dev,
228                                    struct iw_request_info *info,
229                                    struct iw_freq *freq, char *extra)
230 {
231         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
232
233         if (sdata->vif.type == NL80211_IFTYPE_ADHOC ||
234             sdata->vif.type == NL80211_IFTYPE_STATION)
235                 sdata->u.sta.flags &= ~IEEE80211_STA_AUTO_CHANNEL_SEL;
236
237         /* freq->e == 0: freq->m = channel; otherwise freq = m * 10^e */
238         if (freq->e == 0) {
239                 if (freq->m < 0) {
240                         if (sdata->vif.type == NL80211_IFTYPE_ADHOC ||
241                             sdata->vif.type == NL80211_IFTYPE_STATION)
242                                 sdata->u.sta.flags |=
243                                         IEEE80211_STA_AUTO_CHANNEL_SEL;
244                         return 0;
245                 } else
246                         return ieee80211_set_freq(sdata,
247                                 ieee80211_channel_to_frequency(freq->m));
248         } else {
249                 int i, div = 1000000;
250                 for (i = 0; i < freq->e; i++)
251                         div /= 10;
252                 if (div > 0)
253                         return ieee80211_set_freq(sdata, freq->m / div);
254                 else
255                         return -EINVAL;
256         }
257 }
258
259
260 static int ieee80211_ioctl_giwfreq(struct net_device *dev,
261                                    struct iw_request_info *info,
262                                    struct iw_freq *freq, char *extra)
263 {
264         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
265
266         freq->m = local->hw.conf.channel->center_freq;
267         freq->e = 6;
268
269         return 0;
270 }
271
272
273 static int ieee80211_ioctl_siwessid(struct net_device *dev,
274                                     struct iw_request_info *info,
275                                     struct iw_point *data, char *ssid)
276 {
277         struct ieee80211_sub_if_data *sdata;
278         size_t len = data->length;
279
280         /* iwconfig uses nul termination in SSID.. */
281         if (len > 0 && ssid[len - 1] == '\0')
282                 len--;
283
284         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
285         if (sdata->vif.type == NL80211_IFTYPE_STATION ||
286             sdata->vif.type == NL80211_IFTYPE_ADHOC) {
287                 int ret;
288                 if (sdata->flags & IEEE80211_SDATA_USERSPACE_MLME) {
289                         if (len > IEEE80211_MAX_SSID_LEN)
290                                 return -EINVAL;
291                         memcpy(sdata->u.sta.ssid, ssid, len);
292                         sdata->u.sta.ssid_len = len;
293                         return 0;
294                 }
295                 if (data->flags)
296                         sdata->u.sta.flags &= ~IEEE80211_STA_AUTO_SSID_SEL;
297                 else
298                         sdata->u.sta.flags |= IEEE80211_STA_AUTO_SSID_SEL;
299                 ret = ieee80211_sta_set_ssid(sdata, ssid, len);
300                 if (ret)
301                         return ret;
302                 ieee80211_sta_req_auth(sdata, &sdata->u.sta);
303                 return 0;
304         }
305
306         return -EOPNOTSUPP;
307 }
308
309
310 static int ieee80211_ioctl_giwessid(struct net_device *dev,
311                                     struct iw_request_info *info,
312                                     struct iw_point *data, char *ssid)
313 {
314         size_t len;
315
316         struct ieee80211_sub_if_data *sdata;
317         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
318         if (sdata->vif.type == NL80211_IFTYPE_STATION ||
319             sdata->vif.type == NL80211_IFTYPE_ADHOC) {
320                 int res = ieee80211_sta_get_ssid(sdata, ssid, &len);
321                 if (res == 0) {
322                         data->length = len;
323                         data->flags = 1;
324                 } else
325                         data->flags = 0;
326                 return res;
327         }
328
329         return -EOPNOTSUPP;
330 }
331
332
333 static int ieee80211_ioctl_siwap(struct net_device *dev,
334                                  struct iw_request_info *info,
335                                  struct sockaddr *ap_addr, char *extra)
336 {
337         struct ieee80211_sub_if_data *sdata;
338
339         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
340         if (sdata->vif.type == NL80211_IFTYPE_STATION ||
341             sdata->vif.type == NL80211_IFTYPE_ADHOC) {
342                 int ret;
343                 if (sdata->flags & IEEE80211_SDATA_USERSPACE_MLME) {
344                         memcpy(sdata->u.sta.bssid, (u8 *) &ap_addr->sa_data,
345                                ETH_ALEN);
346                         return 0;
347                 }
348                 if (is_zero_ether_addr((u8 *) &ap_addr->sa_data))
349                         sdata->u.sta.flags |= IEEE80211_STA_AUTO_BSSID_SEL |
350                                 IEEE80211_STA_AUTO_CHANNEL_SEL;
351                 else if (is_broadcast_ether_addr((u8 *) &ap_addr->sa_data))
352                         sdata->u.sta.flags |= IEEE80211_STA_AUTO_BSSID_SEL;
353                 else
354                         sdata->u.sta.flags &= ~IEEE80211_STA_AUTO_BSSID_SEL;
355                 ret = ieee80211_sta_set_bssid(sdata, (u8 *) &ap_addr->sa_data);
356                 if (ret)
357                         return ret;
358                 ieee80211_sta_req_auth(sdata, &sdata->u.sta);
359                 return 0;
360         } else if (sdata->vif.type == NL80211_IFTYPE_WDS) {
361                 /*
362                  * If it is necessary to update the WDS peer address
363                  * while the interface is running, then we need to do
364                  * more work here, namely if it is running we need to
365                  * add a new and remove the old STA entry, this is
366                  * normally handled by _open() and _stop().
367                  */
368                 if (netif_running(dev))
369                         return -EBUSY;
370
371                 memcpy(&sdata->u.wds.remote_addr, (u8 *) &ap_addr->sa_data,
372                        ETH_ALEN);
373
374                 return 0;
375         }
376
377         return -EOPNOTSUPP;
378 }
379
380
381 static int ieee80211_ioctl_giwap(struct net_device *dev,
382                                  struct iw_request_info *info,
383                                  struct sockaddr *ap_addr, char *extra)
384 {
385         struct ieee80211_sub_if_data *sdata;
386
387         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
388         if (sdata->vif.type == NL80211_IFTYPE_STATION ||
389             sdata->vif.type == NL80211_IFTYPE_ADHOC) {
390                 if (sdata->u.sta.state == IEEE80211_STA_MLME_ASSOCIATED ||
391                     sdata->u.sta.state == IEEE80211_STA_MLME_IBSS_JOINED) {
392                         ap_addr->sa_family = ARPHRD_ETHER;
393                         memcpy(&ap_addr->sa_data, sdata->u.sta.bssid, ETH_ALEN);
394                         return 0;
395                 } else {
396                         memset(&ap_addr->sa_data, 0, ETH_ALEN);
397                         return 0;
398                 }
399         } else if (sdata->vif.type == NL80211_IFTYPE_WDS) {
400                 ap_addr->sa_family = ARPHRD_ETHER;
401                 memcpy(&ap_addr->sa_data, sdata->u.wds.remote_addr, ETH_ALEN);
402                 return 0;
403         }
404
405         return -EOPNOTSUPP;
406 }
407
408
409 static int ieee80211_ioctl_siwscan(struct net_device *dev,
410                                    struct iw_request_info *info,
411                                    union iwreq_data *wrqu, char *extra)
412 {
413         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
414         struct iw_scan_req *req = NULL;
415         u8 *ssid = NULL;
416         size_t ssid_len = 0;
417
418         if (!netif_running(dev))
419                 return -ENETDOWN;
420
421         if (sdata->vif.type != NL80211_IFTYPE_STATION &&
422             sdata->vif.type != NL80211_IFTYPE_ADHOC &&
423             sdata->vif.type != NL80211_IFTYPE_MESH_POINT)
424                 return -EOPNOTSUPP;
425
426         /* if SSID was specified explicitly then use that */
427         if (wrqu->data.length == sizeof(struct iw_scan_req) &&
428             wrqu->data.flags & IW_SCAN_THIS_ESSID) {
429                 req = (struct iw_scan_req *)extra;
430                 ssid = req->essid;
431                 ssid_len = req->essid_len;
432         }
433
434         return ieee80211_request_scan(sdata, ssid, ssid_len);
435 }
436
437
438 static int ieee80211_ioctl_giwscan(struct net_device *dev,
439                                    struct iw_request_info *info,
440                                    struct iw_point *data, char *extra)
441 {
442         int res;
443         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
444         struct ieee80211_sub_if_data *sdata;
445
446         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
447
448         if (local->sw_scanning || local->hw_scanning)
449                 return -EAGAIN;
450
451         res = ieee80211_scan_results(local, info, extra, data->length);
452         if (res >= 0) {
453                 data->length = res;
454                 return 0;
455         }
456         data->length = 0;
457         return res;
458 }
459
460
461 static int ieee80211_ioctl_siwrate(struct net_device *dev,
462                                   struct iw_request_info *info,
463                                   struct iw_param *rate, char *extra)
464 {
465         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
466         int i, err = -EINVAL;
467         u32 target_rate = rate->value / 100000;
468         struct ieee80211_sub_if_data *sdata;
469         struct ieee80211_supported_band *sband;
470
471         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
472
473         sband = local->hw.wiphy->bands[local->hw.conf.channel->band];
474
475         /* target_rate = -1, rate->fixed = 0 means auto only, so use all rates
476          * target_rate = X, rate->fixed = 1 means only rate X
477          * target_rate = X, rate->fixed = 0 means all rates <= X */
478         sdata->max_ratectrl_rateidx = -1;
479         sdata->force_unicast_rateidx = -1;
480         if (rate->value < 0)
481                 return 0;
482
483         for (i=0; i< sband->n_bitrates; i++) {
484                 struct ieee80211_rate *brate = &sband->bitrates[i];
485                 int this_rate = brate->bitrate;
486
487                 if (target_rate == this_rate) {
488                         sdata->max_ratectrl_rateidx = i;
489                         if (rate->fixed)
490                                 sdata->force_unicast_rateidx = i;
491                         err = 0;
492                         break;
493                 }
494         }
495         return err;
496 }
497
498 static int ieee80211_ioctl_giwrate(struct net_device *dev,
499                                   struct iw_request_info *info,
500                                   struct iw_param *rate, char *extra)
501 {
502         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
503         struct sta_info *sta;
504         struct ieee80211_sub_if_data *sdata;
505         struct ieee80211_supported_band *sband;
506
507         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
508
509         if (sdata->vif.type != NL80211_IFTYPE_STATION)
510                 return -EOPNOTSUPP;
511
512         sband = local->hw.wiphy->bands[local->hw.conf.channel->band];
513
514         rcu_read_lock();
515
516         sta = sta_info_get(local, sdata->u.sta.bssid);
517
518         if (sta && !(sta->last_tx_rate.flags & IEEE80211_TX_RC_MCS))
519                 rate->value = sband->bitrates[sta->last_tx_rate.idx].bitrate;
520         else
521                 rate->value = 0;
522
523         rcu_read_unlock();
524
525         if (!sta)
526                 return -ENODEV;
527
528         rate->value *= 100000;
529
530         return 0;
531 }
532
533 static int ieee80211_ioctl_siwtxpower(struct net_device *dev,
534                                       struct iw_request_info *info,
535                                       union iwreq_data *data, char *extra)
536 {
537         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
538         struct ieee80211_channel* chan = local->hw.conf.channel;
539         u32 reconf_flags = 0;
540         int new_power_level;
541
542         if ((data->txpower.flags & IW_TXPOW_TYPE) != IW_TXPOW_DBM)
543                 return -EINVAL;
544         if (data->txpower.flags & IW_TXPOW_RANGE)
545                 return -EINVAL;
546         if (!chan)
547                 return -EINVAL;
548
549         if (data->txpower.fixed)
550                 new_power_level = min(data->txpower.value, chan->max_power);
551         else /* Automatic power level setting */
552                 new_power_level = chan->max_power;
553
554         local->user_power_level = new_power_level;
555         if (local->hw.conf.power_level != new_power_level)
556                 reconf_flags |= IEEE80211_CONF_CHANGE_POWER;
557
558         if (local->hw.conf.radio_enabled != !(data->txpower.disabled)) {
559                 local->hw.conf.radio_enabled = !(data->txpower.disabled);
560                 reconf_flags |= IEEE80211_CONF_CHANGE_RADIO_ENABLED;
561                 ieee80211_led_radio(local, local->hw.conf.radio_enabled);
562         }
563
564         if (reconf_flags)
565                 ieee80211_hw_config(local, reconf_flags);
566
567         return 0;
568 }
569
570 static int ieee80211_ioctl_giwtxpower(struct net_device *dev,
571                                    struct iw_request_info *info,
572                                    union iwreq_data *data, char *extra)
573 {
574         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
575
576         data->txpower.fixed = 1;
577         data->txpower.disabled = !(local->hw.conf.radio_enabled);
578         data->txpower.value = local->hw.conf.power_level;
579         data->txpower.flags = IW_TXPOW_DBM;
580
581         return 0;
582 }
583
584 static int ieee80211_ioctl_siwrts(struct net_device *dev,
585                                   struct iw_request_info *info,
586                                   struct iw_param *rts, char *extra)
587 {
588         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
589
590         if (rts->disabled)
591                 local->rts_threshold = IEEE80211_MAX_RTS_THRESHOLD;
592         else if (!rts->fixed)
593                 /* if the rts value is not fixed, then take default */
594                 local->rts_threshold = IEEE80211_MAX_RTS_THRESHOLD;
595         else if (rts->value < 0 || rts->value > IEEE80211_MAX_RTS_THRESHOLD)
596                 return -EINVAL;
597         else
598                 local->rts_threshold = rts->value;
599
600         /* If the wlan card performs RTS/CTS in hardware/firmware,
601          * configure it here */
602
603         if (local->ops->set_rts_threshold)
604                 local->ops->set_rts_threshold(local_to_hw(local),
605                                              local->rts_threshold);
606
607         return 0;
608 }
609
610 static int ieee80211_ioctl_giwrts(struct net_device *dev,
611                                   struct iw_request_info *info,
612                                   struct iw_param *rts, char *extra)
613 {
614         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
615
616         rts->value = local->rts_threshold;
617         rts->disabled = (rts->value >= IEEE80211_MAX_RTS_THRESHOLD);
618         rts->fixed = 1;
619
620         return 0;
621 }
622
623
624 static int ieee80211_ioctl_siwfrag(struct net_device *dev,
625                                    struct iw_request_info *info,
626                                    struct iw_param *frag, char *extra)
627 {
628         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
629
630         if (frag->disabled)
631                 local->fragmentation_threshold = IEEE80211_MAX_FRAG_THRESHOLD;
632         else if (!frag->fixed)
633                 local->fragmentation_threshold = IEEE80211_MAX_FRAG_THRESHOLD;
634         else if (frag->value < 256 ||
635                  frag->value > IEEE80211_MAX_FRAG_THRESHOLD)
636                 return -EINVAL;
637         else {
638                 /* Fragment length must be even, so strip LSB. */
639                 local->fragmentation_threshold = frag->value & ~0x1;
640         }
641
642         return 0;
643 }
644
645 static int ieee80211_ioctl_giwfrag(struct net_device *dev,
646                                    struct iw_request_info *info,
647                                    struct iw_param *frag, char *extra)
648 {
649         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
650
651         frag->value = local->fragmentation_threshold;
652         frag->disabled = (frag->value >= IEEE80211_MAX_RTS_THRESHOLD);
653         frag->fixed = 1;
654
655         return 0;
656 }
657
658
659 static int ieee80211_ioctl_siwretry(struct net_device *dev,
660                                     struct iw_request_info *info,
661                                     struct iw_param *retry, char *extra)
662 {
663         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
664
665         if (retry->disabled ||
666             (retry->flags & IW_RETRY_TYPE) != IW_RETRY_LIMIT)
667                 return -EINVAL;
668
669         if (retry->flags & IW_RETRY_MAX) {
670                 local->hw.conf.long_frame_max_tx_count = retry->value;
671         } else if (retry->flags & IW_RETRY_MIN) {
672                 local->hw.conf.short_frame_max_tx_count = retry->value;
673         } else {
674                 local->hw.conf.long_frame_max_tx_count = retry->value;
675                 local->hw.conf.short_frame_max_tx_count = retry->value;
676         }
677
678         ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_RETRY_LIMITS);
679
680         return 0;
681 }
682
683
684 static int ieee80211_ioctl_giwretry(struct net_device *dev,
685                                     struct iw_request_info *info,
686                                     struct iw_param *retry, char *extra)
687 {
688         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
689
690         retry->disabled = 0;
691         if (retry->flags == 0 || retry->flags & IW_RETRY_MIN) {
692                 /* first return min value, iwconfig will ask max value
693                  * later if needed */
694                 retry->flags |= IW_RETRY_LIMIT;
695                 retry->value = local->hw.conf.short_frame_max_tx_count;
696                 if (local->hw.conf.long_frame_max_tx_count !=
697                     local->hw.conf.short_frame_max_tx_count)
698                         retry->flags |= IW_RETRY_MIN;
699                 return 0;
700         }
701         if (retry->flags & IW_RETRY_MAX) {
702                 retry->flags = IW_RETRY_LIMIT | IW_RETRY_MAX;
703                 retry->value = local->hw.conf.long_frame_max_tx_count;
704         }
705
706         return 0;
707 }
708
709 static int ieee80211_ioctl_siwmlme(struct net_device *dev,
710                                    struct iw_request_info *info,
711                                    struct iw_point *data, char *extra)
712 {
713         struct ieee80211_sub_if_data *sdata;
714         struct iw_mlme *mlme = (struct iw_mlme *) extra;
715
716         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
717         if (sdata->vif.type != NL80211_IFTYPE_STATION &&
718             sdata->vif.type != NL80211_IFTYPE_ADHOC)
719                 return -EINVAL;
720
721         switch (mlme->cmd) {
722         case IW_MLME_DEAUTH:
723                 /* TODO: mlme->addr.sa_data */
724                 return ieee80211_sta_deauthenticate(sdata, mlme->reason_code);
725         case IW_MLME_DISASSOC:
726                 /* TODO: mlme->addr.sa_data */
727                 return ieee80211_sta_disassociate(sdata, mlme->reason_code);
728         default:
729                 return -EOPNOTSUPP;
730         }
731 }
732
733
734 static int ieee80211_ioctl_siwencode(struct net_device *dev,
735                                      struct iw_request_info *info,
736                                      struct iw_point *erq, char *keybuf)
737 {
738         struct ieee80211_sub_if_data *sdata;
739         int idx, i, alg = ALG_WEP;
740         u8 bcaddr[ETH_ALEN] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
741         int remove = 0;
742
743         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
744
745         idx = erq->flags & IW_ENCODE_INDEX;
746         if (idx == 0) {
747                 if (sdata->default_key)
748                         for (i = 0; i < NUM_DEFAULT_KEYS; i++) {
749                                 if (sdata->default_key == sdata->keys[i]) {
750                                         idx = i;
751                                         break;
752                                 }
753                         }
754         } else if (idx < 1 || idx > 4)
755                 return -EINVAL;
756         else
757                 idx--;
758
759         if (erq->flags & IW_ENCODE_DISABLED)
760                 remove = 1;
761         else if (erq->length == 0) {
762                 /* No key data - just set the default TX key index */
763                 ieee80211_set_default_key(sdata, idx);
764                 return 0;
765         }
766
767         return ieee80211_set_encryption(
768                 sdata, bcaddr,
769                 idx, alg, remove,
770                 !sdata->default_key,
771                 keybuf, erq->length);
772 }
773
774
775 static int ieee80211_ioctl_giwencode(struct net_device *dev,
776                                      struct iw_request_info *info,
777                                      struct iw_point *erq, char *key)
778 {
779         struct ieee80211_sub_if_data *sdata;
780         int idx, i;
781
782         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
783
784         idx = erq->flags & IW_ENCODE_INDEX;
785         if (idx < 1 || idx > 4) {
786                 idx = -1;
787                 if (!sdata->default_key)
788                         idx = 0;
789                 else for (i = 0; i < NUM_DEFAULT_KEYS; i++) {
790                         if (sdata->default_key == sdata->keys[i]) {
791                                 idx = i;
792                                 break;
793                         }
794                 }
795                 if (idx < 0)
796                         return -EINVAL;
797         } else
798                 idx--;
799
800         erq->flags = idx + 1;
801
802         if (!sdata->keys[idx]) {
803                 erq->length = 0;
804                 erq->flags |= IW_ENCODE_DISABLED;
805                 return 0;
806         }
807
808         memcpy(key, sdata->keys[idx]->conf.key,
809                min_t(int, erq->length, sdata->keys[idx]->conf.keylen));
810         erq->length = sdata->keys[idx]->conf.keylen;
811         erq->flags |= IW_ENCODE_ENABLED;
812
813         if (sdata->vif.type == NL80211_IFTYPE_STATION) {
814                 struct ieee80211_if_sta *ifsta = &sdata->u.sta;
815                 switch (ifsta->auth_alg) {
816                 case WLAN_AUTH_OPEN:
817                 case WLAN_AUTH_LEAP:
818                         erq->flags |= IW_ENCODE_OPEN;
819                         break;
820                 case WLAN_AUTH_SHARED_KEY:
821                         erq->flags |= IW_ENCODE_RESTRICTED;
822                         break;
823                 }
824         }
825
826         return 0;
827 }
828
829 static int ieee80211_ioctl_siwpower(struct net_device *dev,
830                                     struct iw_request_info *info,
831                                     struct iw_param *wrq,
832                                     char *extra)
833 {
834         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
835         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
836         struct ieee80211_conf *conf = &local->hw.conf;
837         int ret = 0, timeout = 0;
838         bool ps;
839
840         if (sdata->vif.type != NL80211_IFTYPE_STATION)
841                 return -EINVAL;
842
843         if (wrq->disabled) {
844                 ps = false;
845                 timeout = 0;
846                 goto set;
847         }
848
849         switch (wrq->flags & IW_POWER_MODE) {
850         case IW_POWER_ON:       /* If not specified */
851         case IW_POWER_MODE:     /* If set all mask */
852         case IW_POWER_ALL_R:    /* If explicitely state all */
853                 ps = true;
854                 break;
855         default:                /* Otherwise we ignore */
856                 return -EINVAL;
857         }
858
859         if (wrq->flags & ~(IW_POWER_MODE | IW_POWER_TIMEOUT))
860                 return -EINVAL;
861
862         if (wrq->flags & IW_POWER_TIMEOUT)
863                 timeout = wrq->value / 1000;
864
865 set:
866         if (ps == local->powersave && timeout == conf->dynamic_ps_timeout)
867                 return ret;
868
869         local->powersave = ps;
870         conf->dynamic_ps_timeout = timeout;
871
872         if (local->hw.flags & IEEE80211_HW_NO_STACK_DYNAMIC_PS) {
873                 ret = ieee80211_hw_config(local,
874                                           IEEE80211_CONF_CHANGE_DYNPS_TIMEOUT);
875         } else if (sdata->u.sta.flags & IEEE80211_STA_ASSOCIATED) {
876                 if (conf->dynamic_ps_timeout > 0)
877                         mod_timer(&local->dynamic_ps_timer, jiffies +
878                                   msecs_to_jiffies(conf->dynamic_ps_timeout));
879                 else {
880                         if (local->powersave) {
881                                 ieee80211_send_nullfunc(local, sdata, 1);
882                                 conf->flags |= IEEE80211_CONF_PS;
883                                 ret = ieee80211_hw_config(local,
884                                                 IEEE80211_CONF_CHANGE_PS);
885                         } else {
886                                 conf->flags &= ~IEEE80211_CONF_PS;
887                                 ret = ieee80211_hw_config(local,
888                                                 IEEE80211_CONF_CHANGE_PS);
889                                 ieee80211_send_nullfunc(local, sdata, 0);
890                         }
891                 }
892         }
893
894         return ret;
895 }
896
897 static int ieee80211_ioctl_giwpower(struct net_device *dev,
898                                     struct iw_request_info *info,
899                                     union iwreq_data *wrqu,
900                                     char *extra)
901 {
902         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
903
904         wrqu->power.disabled = !local->powersave;
905
906         return 0;
907 }
908
909 static int ieee80211_ioctl_siwauth(struct net_device *dev,
910                                    struct iw_request_info *info,
911                                    struct iw_param *data, char *extra)
912 {
913         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
914         int ret = 0;
915
916         switch (data->flags & IW_AUTH_INDEX) {
917         case IW_AUTH_WPA_VERSION:
918         case IW_AUTH_CIPHER_GROUP:
919         case IW_AUTH_WPA_ENABLED:
920         case IW_AUTH_RX_UNENCRYPTED_EAPOL:
921         case IW_AUTH_KEY_MGMT:
922                 break;
923         case IW_AUTH_CIPHER_PAIRWISE:
924                 if (sdata->vif.type == NL80211_IFTYPE_STATION) {
925                         if (data->value & (IW_AUTH_CIPHER_WEP40 |
926                             IW_AUTH_CIPHER_WEP104 | IW_AUTH_CIPHER_TKIP))
927                                 sdata->u.sta.flags |=
928                                         IEEE80211_STA_TKIP_WEP_USED;
929                         else
930                                 sdata->u.sta.flags &=
931                                         ~IEEE80211_STA_TKIP_WEP_USED;
932                 }
933                 break;
934         case IW_AUTH_DROP_UNENCRYPTED:
935                 sdata->drop_unencrypted = !!data->value;
936                 break;
937         case IW_AUTH_PRIVACY_INVOKED:
938                 if (sdata->vif.type != NL80211_IFTYPE_STATION)
939                         ret = -EINVAL;
940                 else {
941                         sdata->u.sta.flags &= ~IEEE80211_STA_PRIVACY_INVOKED;
942                         /*
943                          * Privacy invoked by wpa_supplicant, store the
944                          * value and allow associating to a protected
945                          * network without having a key up front.
946                          */
947                         if (data->value)
948                                 sdata->u.sta.flags |=
949                                         IEEE80211_STA_PRIVACY_INVOKED;
950                 }
951                 break;
952         case IW_AUTH_80211_AUTH_ALG:
953                 if (sdata->vif.type == NL80211_IFTYPE_STATION ||
954                     sdata->vif.type == NL80211_IFTYPE_ADHOC)
955                         sdata->u.sta.auth_algs = data->value;
956                 else
957                         ret = -EOPNOTSUPP;
958                 break;
959         default:
960                 ret = -EOPNOTSUPP;
961                 break;
962         }
963         return ret;
964 }
965
966 /* Get wireless statistics.  Called by /proc/net/wireless and by SIOCGIWSTATS */
967 static struct iw_statistics *ieee80211_get_wireless_stats(struct net_device *dev)
968 {
969         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
970         struct iw_statistics *wstats = &local->wstats;
971         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
972         struct sta_info *sta = NULL;
973
974         rcu_read_lock();
975
976         if (sdata->vif.type == NL80211_IFTYPE_STATION ||
977             sdata->vif.type == NL80211_IFTYPE_ADHOC)
978                 sta = sta_info_get(local, sdata->u.sta.bssid);
979         if (!sta) {
980                 wstats->discard.fragment = 0;
981                 wstats->discard.misc = 0;
982                 wstats->qual.qual = 0;
983                 wstats->qual.level = 0;
984                 wstats->qual.noise = 0;
985                 wstats->qual.updated = IW_QUAL_ALL_INVALID;
986         } else {
987                 wstats->qual.level = sta->last_signal;
988                 wstats->qual.qual = sta->last_qual;
989                 wstats->qual.noise = sta->last_noise;
990                 wstats->qual.updated = local->wstats_flags;
991         }
992
993         rcu_read_unlock();
994
995         return wstats;
996 }
997
998 static int ieee80211_ioctl_giwauth(struct net_device *dev,
999                                    struct iw_request_info *info,
1000                                    struct iw_param *data, char *extra)
1001 {
1002         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1003         int ret = 0;
1004
1005         switch (data->flags & IW_AUTH_INDEX) {
1006         case IW_AUTH_80211_AUTH_ALG:
1007                 if (sdata->vif.type == NL80211_IFTYPE_STATION ||
1008                     sdata->vif.type == NL80211_IFTYPE_ADHOC)
1009                         data->value = sdata->u.sta.auth_algs;
1010                 else
1011                         ret = -EOPNOTSUPP;
1012                 break;
1013         default:
1014                 ret = -EOPNOTSUPP;
1015                 break;
1016         }
1017         return ret;
1018 }
1019
1020
1021 static int ieee80211_ioctl_siwencodeext(struct net_device *dev,
1022                                         struct iw_request_info *info,
1023                                         struct iw_point *erq, char *extra)
1024 {
1025         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1026         struct iw_encode_ext *ext = (struct iw_encode_ext *) extra;
1027         int uninitialized_var(alg), idx, i, remove = 0;
1028
1029         switch (ext->alg) {
1030         case IW_ENCODE_ALG_NONE:
1031                 remove = 1;
1032                 break;
1033         case IW_ENCODE_ALG_WEP:
1034                 alg = ALG_WEP;
1035                 break;
1036         case IW_ENCODE_ALG_TKIP:
1037                 alg = ALG_TKIP;
1038                 break;
1039         case IW_ENCODE_ALG_CCMP:
1040                 alg = ALG_CCMP;
1041                 break;
1042         default:
1043                 return -EOPNOTSUPP;
1044         }
1045
1046         if (erq->flags & IW_ENCODE_DISABLED)
1047                 remove = 1;
1048
1049         idx = erq->flags & IW_ENCODE_INDEX;
1050         if (idx < 1 || idx > 4) {
1051                 idx = -1;
1052                 if (!sdata->default_key)
1053                         idx = 0;
1054                 else for (i = 0; i < NUM_DEFAULT_KEYS; i++) {
1055                         if (sdata->default_key == sdata->keys[i]) {
1056                                 idx = i;
1057                                 break;
1058                         }
1059                 }
1060                 if (idx < 0)
1061                         return -EINVAL;
1062         } else
1063                 idx--;
1064
1065         return ieee80211_set_encryption(sdata, ext->addr.sa_data, idx, alg,
1066                                         remove,
1067                                         ext->ext_flags &
1068                                         IW_ENCODE_EXT_SET_TX_KEY,
1069                                         ext->key, ext->key_len);
1070 }
1071
1072
1073 /* Structures to export the Wireless Handlers */
1074
1075 static const iw_handler ieee80211_handler[] =
1076 {
1077         (iw_handler) NULL,                              /* SIOCSIWCOMMIT */
1078         (iw_handler) cfg80211_wext_giwname,             /* SIOCGIWNAME */
1079         (iw_handler) NULL,                              /* SIOCSIWNWID */
1080         (iw_handler) NULL,                              /* SIOCGIWNWID */
1081         (iw_handler) ieee80211_ioctl_siwfreq,           /* SIOCSIWFREQ */
1082         (iw_handler) ieee80211_ioctl_giwfreq,           /* SIOCGIWFREQ */
1083         (iw_handler) cfg80211_wext_siwmode,             /* SIOCSIWMODE */
1084         (iw_handler) cfg80211_wext_giwmode,             /* SIOCGIWMODE */
1085         (iw_handler) NULL,                              /* SIOCSIWSENS */
1086         (iw_handler) NULL,                              /* SIOCGIWSENS */
1087         (iw_handler) NULL /* not used */,               /* SIOCSIWRANGE */
1088         (iw_handler) ieee80211_ioctl_giwrange,          /* SIOCGIWRANGE */
1089         (iw_handler) NULL /* not used */,               /* SIOCSIWPRIV */
1090         (iw_handler) NULL /* kernel code */,            /* SIOCGIWPRIV */
1091         (iw_handler) NULL /* not used */,               /* SIOCSIWSTATS */
1092         (iw_handler) NULL /* kernel code */,            /* SIOCGIWSTATS */
1093         (iw_handler) NULL,                              /* SIOCSIWSPY */
1094         (iw_handler) NULL,                              /* SIOCGIWSPY */
1095         (iw_handler) NULL,                              /* SIOCSIWTHRSPY */
1096         (iw_handler) NULL,                              /* SIOCGIWTHRSPY */
1097         (iw_handler) ieee80211_ioctl_siwap,             /* SIOCSIWAP */
1098         (iw_handler) ieee80211_ioctl_giwap,             /* SIOCGIWAP */
1099         (iw_handler) ieee80211_ioctl_siwmlme,           /* SIOCSIWMLME */
1100         (iw_handler) NULL,                              /* SIOCGIWAPLIST */
1101         (iw_handler) ieee80211_ioctl_siwscan,           /* SIOCSIWSCAN */
1102         (iw_handler) ieee80211_ioctl_giwscan,           /* SIOCGIWSCAN */
1103         (iw_handler) ieee80211_ioctl_siwessid,          /* SIOCSIWESSID */
1104         (iw_handler) ieee80211_ioctl_giwessid,          /* SIOCGIWESSID */
1105         (iw_handler) NULL,                              /* SIOCSIWNICKN */
1106         (iw_handler) NULL,                              /* SIOCGIWNICKN */
1107         (iw_handler) NULL,                              /* -- hole -- */
1108         (iw_handler) NULL,                              /* -- hole -- */
1109         (iw_handler) ieee80211_ioctl_siwrate,           /* SIOCSIWRATE */
1110         (iw_handler) ieee80211_ioctl_giwrate,           /* SIOCGIWRATE */
1111         (iw_handler) ieee80211_ioctl_siwrts,            /* SIOCSIWRTS */
1112         (iw_handler) ieee80211_ioctl_giwrts,            /* SIOCGIWRTS */
1113         (iw_handler) ieee80211_ioctl_siwfrag,           /* SIOCSIWFRAG */
1114         (iw_handler) ieee80211_ioctl_giwfrag,           /* SIOCGIWFRAG */
1115         (iw_handler) ieee80211_ioctl_siwtxpower,        /* SIOCSIWTXPOW */
1116         (iw_handler) ieee80211_ioctl_giwtxpower,        /* SIOCGIWTXPOW */
1117         (iw_handler) ieee80211_ioctl_siwretry,          /* SIOCSIWRETRY */
1118         (iw_handler) ieee80211_ioctl_giwretry,          /* SIOCGIWRETRY */
1119         (iw_handler) ieee80211_ioctl_siwencode,         /* SIOCSIWENCODE */
1120         (iw_handler) ieee80211_ioctl_giwencode,         /* SIOCGIWENCODE */
1121         (iw_handler) ieee80211_ioctl_siwpower,          /* SIOCSIWPOWER */
1122         (iw_handler) ieee80211_ioctl_giwpower,          /* SIOCGIWPOWER */
1123         (iw_handler) NULL,                              /* -- hole -- */
1124         (iw_handler) NULL,                              /* -- hole -- */
1125         (iw_handler) ieee80211_ioctl_siwgenie,          /* SIOCSIWGENIE */
1126         (iw_handler) NULL,                              /* SIOCGIWGENIE */
1127         (iw_handler) ieee80211_ioctl_siwauth,           /* SIOCSIWAUTH */
1128         (iw_handler) ieee80211_ioctl_giwauth,           /* SIOCGIWAUTH */
1129         (iw_handler) ieee80211_ioctl_siwencodeext,      /* SIOCSIWENCODEEXT */
1130         (iw_handler) NULL,                              /* SIOCGIWENCODEEXT */
1131         (iw_handler) NULL,                              /* SIOCSIWPMKSA */
1132         (iw_handler) NULL,                              /* -- hole -- */
1133 };
1134
1135 const struct iw_handler_def ieee80211_iw_handler_def =
1136 {
1137         .num_standard   = ARRAY_SIZE(ieee80211_handler),
1138         .standard       = (iw_handler *) ieee80211_handler,
1139         .get_wireless_stats = ieee80211_get_wireless_stats,
1140 };