Merge branch 'x86/crashdump' into cpus4096
[linux-2.6] / 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_giwname(struct net_device *dev,
139                                    struct iw_request_info *info,
140                                    char *name, char *extra)
141 {
142         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
143         struct ieee80211_supported_band *sband;
144         u8 is_ht = 0, is_a = 0, is_b = 0, is_g = 0;
145
146
147         sband = local->hw.wiphy->bands[IEEE80211_BAND_5GHZ];
148         if (sband) {
149                 is_a = 1;
150                 is_ht |= sband->ht_info.ht_supported;
151         }
152
153         sband = local->hw.wiphy->bands[IEEE80211_BAND_2GHZ];
154         if (sband) {
155                 int i;
156                 /* Check for mandatory rates */
157                 for (i = 0; i < sband->n_bitrates; i++) {
158                         if (sband->bitrates[i].bitrate == 10)
159                                 is_b = 1;
160                         if (sband->bitrates[i].bitrate == 60)
161                                 is_g = 1;
162                 }
163                 is_ht |= sband->ht_info.ht_supported;
164         }
165
166         strcpy(name, "IEEE 802.11");
167         if (is_a)
168                 strcat(name, "a");
169         if (is_b)
170                 strcat(name, "b");
171         if (is_g)
172                 strcat(name, "g");
173         if (is_ht)
174                 strcat(name, "n");
175
176         return 0;
177 }
178
179
180 static int ieee80211_ioctl_giwrange(struct net_device *dev,
181                                  struct iw_request_info *info,
182                                  struct iw_point *data, char *extra)
183 {
184         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
185         struct iw_range *range = (struct iw_range *) extra;
186         enum ieee80211_band band;
187         int c = 0;
188
189         data->length = sizeof(struct iw_range);
190         memset(range, 0, sizeof(struct iw_range));
191
192         range->we_version_compiled = WIRELESS_EXT;
193         range->we_version_source = 21;
194         range->retry_capa = IW_RETRY_LIMIT;
195         range->retry_flags = IW_RETRY_LIMIT;
196         range->min_retry = 0;
197         range->max_retry = 255;
198         range->min_rts = 0;
199         range->max_rts = 2347;
200         range->min_frag = 256;
201         range->max_frag = 2346;
202
203         range->encoding_size[0] = 5;
204         range->encoding_size[1] = 13;
205         range->num_encoding_sizes = 2;
206         range->max_encoding_tokens = NUM_DEFAULT_KEYS;
207
208         if (local->hw.flags & IEEE80211_HW_SIGNAL_UNSPEC ||
209             local->hw.flags & IEEE80211_HW_SIGNAL_DB)
210                 range->max_qual.level = local->hw.max_signal;
211         else if  (local->hw.flags & IEEE80211_HW_SIGNAL_DBM)
212                 range->max_qual.level = -110;
213         else
214                 range->max_qual.level = 0;
215
216         if (local->hw.flags & IEEE80211_HW_NOISE_DBM)
217                 range->max_qual.noise = -110;
218         else
219                 range->max_qual.noise = 0;
220
221         range->max_qual.qual = 100;
222         range->max_qual.updated = local->wstats_flags;
223
224         range->avg_qual.qual = 50;
225         /* not always true but better than nothing */
226         range->avg_qual.level = range->max_qual.level / 2;
227         range->avg_qual.noise = range->max_qual.noise / 2;
228         range->avg_qual.updated = local->wstats_flags;
229
230         range->enc_capa = IW_ENC_CAPA_WPA | IW_ENC_CAPA_WPA2 |
231                           IW_ENC_CAPA_CIPHER_TKIP | IW_ENC_CAPA_CIPHER_CCMP;
232
233
234         for (band = 0; band < IEEE80211_NUM_BANDS; band ++) {
235                 int i;
236                 struct ieee80211_supported_band *sband;
237
238                 sband = local->hw.wiphy->bands[band];
239
240                 if (!sband)
241                         continue;
242
243                 for (i = 0; i < sband->n_channels && c < IW_MAX_FREQUENCIES; i++) {
244                         struct ieee80211_channel *chan = &sband->channels[i];
245
246                         if (!(chan->flags & IEEE80211_CHAN_DISABLED)) {
247                                 range->freq[c].i =
248                                         ieee80211_frequency_to_channel(
249                                                 chan->center_freq);
250                                 range->freq[c].m = chan->center_freq;
251                                 range->freq[c].e = 6;
252                                 c++;
253                         }
254                 }
255         }
256         range->num_channels = c;
257         range->num_frequency = c;
258
259         IW_EVENT_CAPA_SET_KERNEL(range->event_capa);
260         IW_EVENT_CAPA_SET(range->event_capa, SIOCGIWAP);
261         IW_EVENT_CAPA_SET(range->event_capa, SIOCGIWSCAN);
262
263         range->scan_capa |= IW_SCAN_CAPA_ESSID;
264
265         return 0;
266 }
267
268
269 static int ieee80211_ioctl_siwmode(struct net_device *dev,
270                                    struct iw_request_info *info,
271                                    __u32 *mode, char *extra)
272 {
273         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
274         struct ieee80211_local *local = sdata->local;
275         int type;
276
277         if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN)
278                 return -EOPNOTSUPP;
279
280         switch (*mode) {
281         case IW_MODE_INFRA:
282                 type = NL80211_IFTYPE_STATION;
283                 break;
284         case IW_MODE_ADHOC:
285                 /* Setting ad-hoc mode on non ibss channel is not
286                  * supported.
287                  */
288                 if (local->oper_channel &&
289                     (local->oper_channel->flags & IEEE80211_CHAN_NO_IBSS))
290                         return -EOPNOTSUPP;
291
292                 type = NL80211_IFTYPE_ADHOC;
293                 break;
294         case IW_MODE_REPEAT:
295                 type = NL80211_IFTYPE_WDS;
296                 break;
297         case IW_MODE_MONITOR:
298                 type = NL80211_IFTYPE_MONITOR;
299                 break;
300         default:
301                 return -EINVAL;
302         }
303
304         return ieee80211_if_change_type(sdata, type);
305 }
306
307
308 static int ieee80211_ioctl_giwmode(struct net_device *dev,
309                                    struct iw_request_info *info,
310                                    __u32 *mode, char *extra)
311 {
312         struct ieee80211_sub_if_data *sdata;
313
314         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
315         switch (sdata->vif.type) {
316         case NL80211_IFTYPE_AP:
317                 *mode = IW_MODE_MASTER;
318                 break;
319         case NL80211_IFTYPE_STATION:
320                 *mode = IW_MODE_INFRA;
321                 break;
322         case NL80211_IFTYPE_ADHOC:
323                 *mode = IW_MODE_ADHOC;
324                 break;
325         case NL80211_IFTYPE_MONITOR:
326                 *mode = IW_MODE_MONITOR;
327                 break;
328         case NL80211_IFTYPE_WDS:
329                 *mode = IW_MODE_REPEAT;
330                 break;
331         case NL80211_IFTYPE_AP_VLAN:
332                 *mode = IW_MODE_SECOND;         /* FIXME */
333                 break;
334         default:
335                 *mode = IW_MODE_AUTO;
336                 break;
337         }
338         return 0;
339 }
340
341 static int ieee80211_ioctl_siwfreq(struct net_device *dev,
342                                    struct iw_request_info *info,
343                                    struct iw_freq *freq, char *extra)
344 {
345         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
346
347         if (sdata->vif.type == NL80211_IFTYPE_STATION)
348                 sdata->u.sta.flags &= ~IEEE80211_STA_AUTO_CHANNEL_SEL;
349
350         /* freq->e == 0: freq->m = channel; otherwise freq = m * 10^e */
351         if (freq->e == 0) {
352                 if (freq->m < 0) {
353                         if (sdata->vif.type == NL80211_IFTYPE_STATION)
354                                 sdata->u.sta.flags |=
355                                         IEEE80211_STA_AUTO_CHANNEL_SEL;
356                         return 0;
357                 } else
358                         return ieee80211_set_freq(sdata,
359                                 ieee80211_channel_to_frequency(freq->m));
360         } else {
361                 int i, div = 1000000;
362                 for (i = 0; i < freq->e; i++)
363                         div /= 10;
364                 if (div > 0)
365                         return ieee80211_set_freq(sdata, freq->m / div);
366                 else
367                         return -EINVAL;
368         }
369 }
370
371
372 static int ieee80211_ioctl_giwfreq(struct net_device *dev,
373                                    struct iw_request_info *info,
374                                    struct iw_freq *freq, char *extra)
375 {
376         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
377
378         freq->m = local->hw.conf.channel->center_freq;
379         freq->e = 6;
380
381         return 0;
382 }
383
384
385 static int ieee80211_ioctl_siwessid(struct net_device *dev,
386                                     struct iw_request_info *info,
387                                     struct iw_point *data, char *ssid)
388 {
389         struct ieee80211_sub_if_data *sdata;
390         size_t len = data->length;
391
392         /* iwconfig uses nul termination in SSID.. */
393         if (len > 0 && ssid[len - 1] == '\0')
394                 len--;
395
396         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
397         if (sdata->vif.type == NL80211_IFTYPE_STATION ||
398             sdata->vif.type == NL80211_IFTYPE_ADHOC) {
399                 int ret;
400                 if (sdata->flags & IEEE80211_SDATA_USERSPACE_MLME) {
401                         if (len > IEEE80211_MAX_SSID_LEN)
402                                 return -EINVAL;
403                         memcpy(sdata->u.sta.ssid, ssid, len);
404                         sdata->u.sta.ssid_len = len;
405                         return 0;
406                 }
407                 if (data->flags)
408                         sdata->u.sta.flags &= ~IEEE80211_STA_AUTO_SSID_SEL;
409                 else
410                         sdata->u.sta.flags |= IEEE80211_STA_AUTO_SSID_SEL;
411                 ret = ieee80211_sta_set_ssid(sdata, ssid, len);
412                 if (ret)
413                         return ret;
414                 ieee80211_sta_req_auth(sdata, &sdata->u.sta);
415                 return 0;
416         }
417
418         if (sdata->vif.type == NL80211_IFTYPE_AP) {
419                 memcpy(sdata->u.ap.ssid, ssid, len);
420                 memset(sdata->u.ap.ssid + len, 0,
421                        IEEE80211_MAX_SSID_LEN - len);
422                 sdata->u.ap.ssid_len = len;
423                 return ieee80211_if_config(sdata, IEEE80211_IFCC_SSID);
424         }
425         return -EOPNOTSUPP;
426 }
427
428
429 static int ieee80211_ioctl_giwessid(struct net_device *dev,
430                                     struct iw_request_info *info,
431                                     struct iw_point *data, char *ssid)
432 {
433         size_t len;
434
435         struct ieee80211_sub_if_data *sdata;
436         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
437         if (sdata->vif.type == NL80211_IFTYPE_STATION ||
438             sdata->vif.type == NL80211_IFTYPE_ADHOC) {
439                 int res = ieee80211_sta_get_ssid(sdata, ssid, &len);
440                 if (res == 0) {
441                         data->length = len;
442                         data->flags = 1;
443                 } else
444                         data->flags = 0;
445                 return res;
446         }
447
448         if (sdata->vif.type == NL80211_IFTYPE_AP) {
449                 len = sdata->u.ap.ssid_len;
450                 if (len > IW_ESSID_MAX_SIZE)
451                         len = IW_ESSID_MAX_SIZE;
452                 memcpy(ssid, sdata->u.ap.ssid, len);
453                 data->length = len;
454                 data->flags = 1;
455                 return 0;
456         }
457         return -EOPNOTSUPP;
458 }
459
460
461 static int ieee80211_ioctl_siwap(struct net_device *dev,
462                                  struct iw_request_info *info,
463                                  struct sockaddr *ap_addr, char *extra)
464 {
465         struct ieee80211_sub_if_data *sdata;
466
467         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
468         if (sdata->vif.type == NL80211_IFTYPE_STATION ||
469             sdata->vif.type == NL80211_IFTYPE_ADHOC) {
470                 int ret;
471                 if (sdata->flags & IEEE80211_SDATA_USERSPACE_MLME) {
472                         memcpy(sdata->u.sta.bssid, (u8 *) &ap_addr->sa_data,
473                                ETH_ALEN);
474                         return 0;
475                 }
476                 if (is_zero_ether_addr((u8 *) &ap_addr->sa_data))
477                         sdata->u.sta.flags |= IEEE80211_STA_AUTO_BSSID_SEL |
478                                 IEEE80211_STA_AUTO_CHANNEL_SEL;
479                 else if (is_broadcast_ether_addr((u8 *) &ap_addr->sa_data))
480                         sdata->u.sta.flags |= IEEE80211_STA_AUTO_BSSID_SEL;
481                 else
482                         sdata->u.sta.flags &= ~IEEE80211_STA_AUTO_BSSID_SEL;
483                 ret = ieee80211_sta_set_bssid(sdata, (u8 *) &ap_addr->sa_data);
484                 if (ret)
485                         return ret;
486                 ieee80211_sta_req_auth(sdata, &sdata->u.sta);
487                 return 0;
488         } else if (sdata->vif.type == NL80211_IFTYPE_WDS) {
489                 /*
490                  * If it is necessary to update the WDS peer address
491                  * while the interface is running, then we need to do
492                  * more work here, namely if it is running we need to
493                  * add a new and remove the old STA entry, this is
494                  * normally handled by _open() and _stop().
495                  */
496                 if (netif_running(dev))
497                         return -EBUSY;
498
499                 memcpy(&sdata->u.wds.remote_addr, (u8 *) &ap_addr->sa_data,
500                        ETH_ALEN);
501
502                 return 0;
503         }
504
505         return -EOPNOTSUPP;
506 }
507
508
509 static int ieee80211_ioctl_giwap(struct net_device *dev,
510                                  struct iw_request_info *info,
511                                  struct sockaddr *ap_addr, char *extra)
512 {
513         struct ieee80211_sub_if_data *sdata;
514
515         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
516         if (sdata->vif.type == NL80211_IFTYPE_STATION ||
517             sdata->vif.type == NL80211_IFTYPE_ADHOC) {
518                 if (sdata->u.sta.state == IEEE80211_STA_MLME_ASSOCIATED ||
519                     sdata->u.sta.state == IEEE80211_STA_MLME_IBSS_JOINED) {
520                         ap_addr->sa_family = ARPHRD_ETHER;
521                         memcpy(&ap_addr->sa_data, sdata->u.sta.bssid, ETH_ALEN);
522                         return 0;
523                 } else {
524                         memset(&ap_addr->sa_data, 0, ETH_ALEN);
525                         return 0;
526                 }
527         } else if (sdata->vif.type == NL80211_IFTYPE_WDS) {
528                 ap_addr->sa_family = ARPHRD_ETHER;
529                 memcpy(&ap_addr->sa_data, sdata->u.wds.remote_addr, ETH_ALEN);
530                 return 0;
531         }
532
533         return -EOPNOTSUPP;
534 }
535
536
537 static int ieee80211_ioctl_siwscan(struct net_device *dev,
538                                    struct iw_request_info *info,
539                                    union iwreq_data *wrqu, char *extra)
540 {
541         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
542         struct iw_scan_req *req = NULL;
543         u8 *ssid = NULL;
544         size_t ssid_len = 0;
545
546         if (!netif_running(dev))
547                 return -ENETDOWN;
548
549         if (sdata->vif.type != NL80211_IFTYPE_STATION &&
550             sdata->vif.type != NL80211_IFTYPE_ADHOC &&
551             sdata->vif.type != NL80211_IFTYPE_MESH_POINT &&
552             sdata->vif.type != NL80211_IFTYPE_AP)
553                 return -EOPNOTSUPP;
554
555         /* if SSID was specified explicitly then use that */
556         if (wrqu->data.length == sizeof(struct iw_scan_req) &&
557             wrqu->data.flags & IW_SCAN_THIS_ESSID) {
558                 req = (struct iw_scan_req *)extra;
559                 ssid = req->essid;
560                 ssid_len = req->essid_len;
561         }
562
563         return ieee80211_request_scan(sdata, ssid, ssid_len);
564 }
565
566
567 static int ieee80211_ioctl_giwscan(struct net_device *dev,
568                                    struct iw_request_info *info,
569                                    struct iw_point *data, char *extra)
570 {
571         int res;
572         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
573         struct ieee80211_sub_if_data *sdata;
574
575         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
576
577         if (local->sw_scanning || local->hw_scanning)
578                 return -EAGAIN;
579
580         res = ieee80211_scan_results(local, info, extra, data->length);
581         if (res >= 0) {
582                 data->length = res;
583                 return 0;
584         }
585         data->length = 0;
586         return res;
587 }
588
589
590 static int ieee80211_ioctl_siwrate(struct net_device *dev,
591                                   struct iw_request_info *info,
592                                   struct iw_param *rate, char *extra)
593 {
594         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
595         int i, err = -EINVAL;
596         u32 target_rate = rate->value / 100000;
597         struct ieee80211_sub_if_data *sdata;
598         struct ieee80211_supported_band *sband;
599
600         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
601
602         sband = local->hw.wiphy->bands[local->hw.conf.channel->band];
603
604         /* target_rate = -1, rate->fixed = 0 means auto only, so use all rates
605          * target_rate = X, rate->fixed = 1 means only rate X
606          * target_rate = X, rate->fixed = 0 means all rates <= X */
607         sdata->max_ratectrl_rateidx = -1;
608         sdata->force_unicast_rateidx = -1;
609         if (rate->value < 0)
610                 return 0;
611
612         for (i=0; i< sband->n_bitrates; i++) {
613                 struct ieee80211_rate *brate = &sband->bitrates[i];
614                 int this_rate = brate->bitrate;
615
616                 if (target_rate == this_rate) {
617                         sdata->max_ratectrl_rateidx = i;
618                         if (rate->fixed)
619                                 sdata->force_unicast_rateidx = i;
620                         err = 0;
621                         break;
622                 }
623         }
624         return err;
625 }
626
627 static int ieee80211_ioctl_giwrate(struct net_device *dev,
628                                   struct iw_request_info *info,
629                                   struct iw_param *rate, char *extra)
630 {
631         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
632         struct sta_info *sta;
633         struct ieee80211_sub_if_data *sdata;
634         struct ieee80211_supported_band *sband;
635
636         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
637
638         if (sdata->vif.type != NL80211_IFTYPE_STATION)
639                 return -EOPNOTSUPP;
640
641         sband = local->hw.wiphy->bands[local->hw.conf.channel->band];
642
643         rcu_read_lock();
644
645         sta = sta_info_get(local, sdata->u.sta.bssid);
646
647         if (sta && sta->last_txrate_idx < sband->n_bitrates)
648                 rate->value = sband->bitrates[sta->last_txrate_idx].bitrate;
649         else
650                 rate->value = 0;
651
652         rcu_read_unlock();
653
654         if (!sta)
655                 return -ENODEV;
656
657         rate->value *= 100000;
658
659         return 0;
660 }
661
662 static int ieee80211_ioctl_siwtxpower(struct net_device *dev,
663                                       struct iw_request_info *info,
664                                       union iwreq_data *data, char *extra)
665 {
666         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
667         bool need_reconfig = 0;
668         int new_power_level;
669
670         if ((data->txpower.flags & IW_TXPOW_TYPE) != IW_TXPOW_DBM)
671                 return -EINVAL;
672         if (data->txpower.flags & IW_TXPOW_RANGE)
673                 return -EINVAL;
674
675         if (data->txpower.fixed) {
676                 new_power_level = data->txpower.value;
677         } else {
678                 /*
679                  * Automatic power level. Use maximum power for the current
680                  * channel. Should be part of rate control.
681                  */
682                 struct ieee80211_channel* chan = local->hw.conf.channel;
683                 if (!chan)
684                         return -EINVAL;
685
686                 new_power_level = chan->max_power;
687         }
688
689         if (local->hw.conf.power_level != new_power_level) {
690                 local->hw.conf.power_level = new_power_level;
691                 need_reconfig = 1;
692         }
693
694         if (local->hw.conf.radio_enabled != !(data->txpower.disabled)) {
695                 local->hw.conf.radio_enabled = !(data->txpower.disabled);
696                 need_reconfig = 1;
697                 ieee80211_led_radio(local, local->hw.conf.radio_enabled);
698         }
699
700         if (need_reconfig) {
701                 ieee80211_hw_config(local);
702                 /* The return value of hw_config is not of big interest here,
703                  * as it doesn't say that it failed because of _this_ config
704                  * change or something else. Ignore it. */
705         }
706
707         return 0;
708 }
709
710 static int ieee80211_ioctl_giwtxpower(struct net_device *dev,
711                                    struct iw_request_info *info,
712                                    union iwreq_data *data, char *extra)
713 {
714         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
715
716         data->txpower.fixed = 1;
717         data->txpower.disabled = !(local->hw.conf.radio_enabled);
718         data->txpower.value = local->hw.conf.power_level;
719         data->txpower.flags = IW_TXPOW_DBM;
720
721         return 0;
722 }
723
724 static int ieee80211_ioctl_siwrts(struct net_device *dev,
725                                   struct iw_request_info *info,
726                                   struct iw_param *rts, char *extra)
727 {
728         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
729
730         if (rts->disabled)
731                 local->rts_threshold = IEEE80211_MAX_RTS_THRESHOLD;
732         else if (!rts->fixed)
733                 /* if the rts value is not fixed, then take default */
734                 local->rts_threshold = IEEE80211_MAX_RTS_THRESHOLD;
735         else if (rts->value < 0 || rts->value > IEEE80211_MAX_RTS_THRESHOLD)
736                 return -EINVAL;
737         else
738                 local->rts_threshold = rts->value;
739
740         /* If the wlan card performs RTS/CTS in hardware/firmware,
741          * configure it here */
742
743         if (local->ops->set_rts_threshold)
744                 local->ops->set_rts_threshold(local_to_hw(local),
745                                              local->rts_threshold);
746
747         return 0;
748 }
749
750 static int ieee80211_ioctl_giwrts(struct net_device *dev,
751                                   struct iw_request_info *info,
752                                   struct iw_param *rts, char *extra)
753 {
754         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
755
756         rts->value = local->rts_threshold;
757         rts->disabled = (rts->value >= IEEE80211_MAX_RTS_THRESHOLD);
758         rts->fixed = 1;
759
760         return 0;
761 }
762
763
764 static int ieee80211_ioctl_siwfrag(struct net_device *dev,
765                                    struct iw_request_info *info,
766                                    struct iw_param *frag, char *extra)
767 {
768         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
769
770         if (frag->disabled)
771                 local->fragmentation_threshold = IEEE80211_MAX_FRAG_THRESHOLD;
772         else if (!frag->fixed)
773                 local->fragmentation_threshold = IEEE80211_MAX_FRAG_THRESHOLD;
774         else if (frag->value < 256 ||
775                  frag->value > IEEE80211_MAX_FRAG_THRESHOLD)
776                 return -EINVAL;
777         else {
778                 /* Fragment length must be even, so strip LSB. */
779                 local->fragmentation_threshold = frag->value & ~0x1;
780         }
781
782         /* If the wlan card performs fragmentation in hardware/firmware,
783          * configure it here */
784
785         if (local->ops->set_frag_threshold)
786                 return local->ops->set_frag_threshold(
787                         local_to_hw(local),
788                         local->fragmentation_threshold);
789
790         return 0;
791 }
792
793 static int ieee80211_ioctl_giwfrag(struct net_device *dev,
794                                    struct iw_request_info *info,
795                                    struct iw_param *frag, char *extra)
796 {
797         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
798
799         frag->value = local->fragmentation_threshold;
800         frag->disabled = (frag->value >= IEEE80211_MAX_RTS_THRESHOLD);
801         frag->fixed = 1;
802
803         return 0;
804 }
805
806
807 static int ieee80211_ioctl_siwretry(struct net_device *dev,
808                                     struct iw_request_info *info,
809                                     struct iw_param *retry, char *extra)
810 {
811         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
812
813         if (retry->disabled ||
814             (retry->flags & IW_RETRY_TYPE) != IW_RETRY_LIMIT)
815                 return -EINVAL;
816
817         if (retry->flags & IW_RETRY_MAX)
818                 local->long_retry_limit = retry->value;
819         else if (retry->flags & IW_RETRY_MIN)
820                 local->short_retry_limit = retry->value;
821         else {
822                 local->long_retry_limit = retry->value;
823                 local->short_retry_limit = retry->value;
824         }
825
826         if (local->ops->set_retry_limit) {
827                 return local->ops->set_retry_limit(
828                         local_to_hw(local),
829                         local->short_retry_limit,
830                         local->long_retry_limit);
831         }
832
833         return 0;
834 }
835
836
837 static int ieee80211_ioctl_giwretry(struct net_device *dev,
838                                     struct iw_request_info *info,
839                                     struct iw_param *retry, char *extra)
840 {
841         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
842
843         retry->disabled = 0;
844         if (retry->flags == 0 || retry->flags & IW_RETRY_MIN) {
845                 /* first return min value, iwconfig will ask max value
846                  * later if needed */
847                 retry->flags |= IW_RETRY_LIMIT;
848                 retry->value = local->short_retry_limit;
849                 if (local->long_retry_limit != local->short_retry_limit)
850                         retry->flags |= IW_RETRY_MIN;
851                 return 0;
852         }
853         if (retry->flags & IW_RETRY_MAX) {
854                 retry->flags = IW_RETRY_LIMIT | IW_RETRY_MAX;
855                 retry->value = local->long_retry_limit;
856         }
857
858         return 0;
859 }
860
861 static int ieee80211_ioctl_siwmlme(struct net_device *dev,
862                                    struct iw_request_info *info,
863                                    struct iw_point *data, char *extra)
864 {
865         struct ieee80211_sub_if_data *sdata;
866         struct iw_mlme *mlme = (struct iw_mlme *) extra;
867
868         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
869         if (sdata->vif.type != NL80211_IFTYPE_STATION &&
870             sdata->vif.type != NL80211_IFTYPE_ADHOC)
871                 return -EINVAL;
872
873         switch (mlme->cmd) {
874         case IW_MLME_DEAUTH:
875                 /* TODO: mlme->addr.sa_data */
876                 return ieee80211_sta_deauthenticate(sdata, mlme->reason_code);
877         case IW_MLME_DISASSOC:
878                 /* TODO: mlme->addr.sa_data */
879                 return ieee80211_sta_disassociate(sdata, mlme->reason_code);
880         default:
881                 return -EOPNOTSUPP;
882         }
883 }
884
885
886 static int ieee80211_ioctl_siwencode(struct net_device *dev,
887                                      struct iw_request_info *info,
888                                      struct iw_point *erq, char *keybuf)
889 {
890         struct ieee80211_sub_if_data *sdata;
891         int idx, i, alg = ALG_WEP;
892         u8 bcaddr[ETH_ALEN] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
893         int remove = 0;
894
895         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
896
897         idx = erq->flags & IW_ENCODE_INDEX;
898         if (idx == 0) {
899                 if (sdata->default_key)
900                         for (i = 0; i < NUM_DEFAULT_KEYS; i++) {
901                                 if (sdata->default_key == sdata->keys[i]) {
902                                         idx = i;
903                                         break;
904                                 }
905                         }
906         } else if (idx < 1 || idx > 4)
907                 return -EINVAL;
908         else
909                 idx--;
910
911         if (erq->flags & IW_ENCODE_DISABLED)
912                 remove = 1;
913         else if (erq->length == 0) {
914                 /* No key data - just set the default TX key index */
915                 ieee80211_set_default_key(sdata, idx);
916                 return 0;
917         }
918
919         return ieee80211_set_encryption(
920                 sdata, bcaddr,
921                 idx, alg, remove,
922                 !sdata->default_key,
923                 keybuf, erq->length);
924 }
925
926
927 static int ieee80211_ioctl_giwencode(struct net_device *dev,
928                                      struct iw_request_info *info,
929                                      struct iw_point *erq, char *key)
930 {
931         struct ieee80211_sub_if_data *sdata;
932         int idx, i;
933
934         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
935
936         idx = erq->flags & IW_ENCODE_INDEX;
937         if (idx < 1 || idx > 4) {
938                 idx = -1;
939                 if (!sdata->default_key)
940                         idx = 0;
941                 else for (i = 0; i < NUM_DEFAULT_KEYS; i++) {
942                         if (sdata->default_key == sdata->keys[i]) {
943                                 idx = i;
944                                 break;
945                         }
946                 }
947                 if (idx < 0)
948                         return -EINVAL;
949         } else
950                 idx--;
951
952         erq->flags = idx + 1;
953
954         if (!sdata->keys[idx]) {
955                 erq->length = 0;
956                 erq->flags |= IW_ENCODE_DISABLED;
957                 return 0;
958         }
959
960         memcpy(key, sdata->keys[idx]->conf.key,
961                min_t(int, erq->length, sdata->keys[idx]->conf.keylen));
962         erq->length = sdata->keys[idx]->conf.keylen;
963         erq->flags |= IW_ENCODE_ENABLED;
964
965         if (sdata->vif.type == NL80211_IFTYPE_STATION) {
966                 struct ieee80211_if_sta *ifsta = &sdata->u.sta;
967                 switch (ifsta->auth_alg) {
968                 case WLAN_AUTH_OPEN:
969                 case WLAN_AUTH_LEAP:
970                         erq->flags |= IW_ENCODE_OPEN;
971                         break;
972                 case WLAN_AUTH_SHARED_KEY:
973                         erq->flags |= IW_ENCODE_RESTRICTED;
974                         break;
975                 }
976         }
977
978         return 0;
979 }
980
981 static int ieee80211_ioctl_siwpower(struct net_device *dev,
982                                     struct iw_request_info *info,
983                                     struct iw_param *wrq,
984                                     char *extra)
985 {
986         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
987         struct ieee80211_conf *conf = &local->hw.conf;
988
989         if (wrq->disabled) {
990                 conf->flags &= ~IEEE80211_CONF_PS;
991                 return ieee80211_hw_config(local);
992         }
993
994         switch (wrq->flags & IW_POWER_MODE) {
995         case IW_POWER_ON:       /* If not specified */
996         case IW_POWER_MODE:     /* If set all mask */
997         case IW_POWER_ALL_R:    /* If explicitely state all */
998                 conf->flags |= IEEE80211_CONF_PS;
999                 break;
1000         default:                /* Otherwise we don't support it */
1001                 return -EINVAL;
1002         }
1003
1004         return ieee80211_hw_config(local);
1005 }
1006
1007 static int ieee80211_ioctl_giwpower(struct net_device *dev,
1008                                     struct iw_request_info *info,
1009                                     union iwreq_data *wrqu,
1010                                     char *extra)
1011 {
1012         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
1013         struct ieee80211_conf *conf = &local->hw.conf;
1014
1015         wrqu->power.disabled = !(conf->flags & IEEE80211_CONF_PS);
1016
1017         return 0;
1018 }
1019
1020 static int ieee80211_ioctl_siwauth(struct net_device *dev,
1021                                    struct iw_request_info *info,
1022                                    struct iw_param *data, char *extra)
1023 {
1024         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1025         int ret = 0;
1026
1027         switch (data->flags & IW_AUTH_INDEX) {
1028         case IW_AUTH_WPA_VERSION:
1029         case IW_AUTH_CIPHER_PAIRWISE:
1030         case IW_AUTH_CIPHER_GROUP:
1031         case IW_AUTH_WPA_ENABLED:
1032         case IW_AUTH_RX_UNENCRYPTED_EAPOL:
1033         case IW_AUTH_KEY_MGMT:
1034                 break;
1035         case IW_AUTH_DROP_UNENCRYPTED:
1036                 sdata->drop_unencrypted = !!data->value;
1037                 break;
1038         case IW_AUTH_PRIVACY_INVOKED:
1039                 if (sdata->vif.type != NL80211_IFTYPE_STATION)
1040                         ret = -EINVAL;
1041                 else {
1042                         sdata->u.sta.flags &= ~IEEE80211_STA_PRIVACY_INVOKED;
1043                         /*
1044                          * Privacy invoked by wpa_supplicant, store the
1045                          * value and allow associating to a protected
1046                          * network without having a key up front.
1047                          */
1048                         if (data->value)
1049                                 sdata->u.sta.flags |=
1050                                         IEEE80211_STA_PRIVACY_INVOKED;
1051                 }
1052                 break;
1053         case IW_AUTH_80211_AUTH_ALG:
1054                 if (sdata->vif.type == NL80211_IFTYPE_STATION ||
1055                     sdata->vif.type == NL80211_IFTYPE_ADHOC)
1056                         sdata->u.sta.auth_algs = data->value;
1057                 else
1058                         ret = -EOPNOTSUPP;
1059                 break;
1060         default:
1061                 ret = -EOPNOTSUPP;
1062                 break;
1063         }
1064         return ret;
1065 }
1066
1067 /* Get wireless statistics.  Called by /proc/net/wireless and by SIOCGIWSTATS */
1068 static struct iw_statistics *ieee80211_get_wireless_stats(struct net_device *dev)
1069 {
1070         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
1071         struct iw_statistics *wstats = &local->wstats;
1072         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1073         struct sta_info *sta = NULL;
1074
1075         rcu_read_lock();
1076
1077         if (sdata->vif.type == NL80211_IFTYPE_STATION ||
1078             sdata->vif.type == NL80211_IFTYPE_ADHOC)
1079                 sta = sta_info_get(local, sdata->u.sta.bssid);
1080         if (!sta) {
1081                 wstats->discard.fragment = 0;
1082                 wstats->discard.misc = 0;
1083                 wstats->qual.qual = 0;
1084                 wstats->qual.level = 0;
1085                 wstats->qual.noise = 0;
1086                 wstats->qual.updated = IW_QUAL_ALL_INVALID;
1087         } else {
1088                 wstats->qual.level = sta->last_signal;
1089                 wstats->qual.qual = sta->last_qual;
1090                 wstats->qual.noise = sta->last_noise;
1091                 wstats->qual.updated = local->wstats_flags;
1092         }
1093
1094         rcu_read_unlock();
1095
1096         return wstats;
1097 }
1098
1099 static int ieee80211_ioctl_giwauth(struct net_device *dev,
1100                                    struct iw_request_info *info,
1101                                    struct iw_param *data, char *extra)
1102 {
1103         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1104         int ret = 0;
1105
1106         switch (data->flags & IW_AUTH_INDEX) {
1107         case IW_AUTH_80211_AUTH_ALG:
1108                 if (sdata->vif.type == NL80211_IFTYPE_STATION ||
1109                     sdata->vif.type == NL80211_IFTYPE_ADHOC)
1110                         data->value = sdata->u.sta.auth_algs;
1111                 else
1112                         ret = -EOPNOTSUPP;
1113                 break;
1114         default:
1115                 ret = -EOPNOTSUPP;
1116                 break;
1117         }
1118         return ret;
1119 }
1120
1121
1122 static int ieee80211_ioctl_siwencodeext(struct net_device *dev,
1123                                         struct iw_request_info *info,
1124                                         struct iw_point *erq, char *extra)
1125 {
1126         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1127         struct iw_encode_ext *ext = (struct iw_encode_ext *) extra;
1128         int uninitialized_var(alg), idx, i, remove = 0;
1129
1130         switch (ext->alg) {
1131         case IW_ENCODE_ALG_NONE:
1132                 remove = 1;
1133                 break;
1134         case IW_ENCODE_ALG_WEP:
1135                 alg = ALG_WEP;
1136                 break;
1137         case IW_ENCODE_ALG_TKIP:
1138                 alg = ALG_TKIP;
1139                 break;
1140         case IW_ENCODE_ALG_CCMP:
1141                 alg = ALG_CCMP;
1142                 break;
1143         default:
1144                 return -EOPNOTSUPP;
1145         }
1146
1147         if (erq->flags & IW_ENCODE_DISABLED)
1148                 remove = 1;
1149
1150         idx = erq->flags & IW_ENCODE_INDEX;
1151         if (idx < 1 || idx > 4) {
1152                 idx = -1;
1153                 if (!sdata->default_key)
1154                         idx = 0;
1155                 else for (i = 0; i < NUM_DEFAULT_KEYS; i++) {
1156                         if (sdata->default_key == sdata->keys[i]) {
1157                                 idx = i;
1158                                 break;
1159                         }
1160                 }
1161                 if (idx < 0)
1162                         return -EINVAL;
1163         } else
1164                 idx--;
1165
1166         return ieee80211_set_encryption(sdata, ext->addr.sa_data, idx, alg,
1167                                         remove,
1168                                         ext->ext_flags &
1169                                         IW_ENCODE_EXT_SET_TX_KEY,
1170                                         ext->key, ext->key_len);
1171 }
1172
1173
1174 /* Structures to export the Wireless Handlers */
1175
1176 static const iw_handler ieee80211_handler[] =
1177 {
1178         (iw_handler) NULL,                              /* SIOCSIWCOMMIT */
1179         (iw_handler) ieee80211_ioctl_giwname,           /* SIOCGIWNAME */
1180         (iw_handler) NULL,                              /* SIOCSIWNWID */
1181         (iw_handler) NULL,                              /* SIOCGIWNWID */
1182         (iw_handler) ieee80211_ioctl_siwfreq,           /* SIOCSIWFREQ */
1183         (iw_handler) ieee80211_ioctl_giwfreq,           /* SIOCGIWFREQ */
1184         (iw_handler) ieee80211_ioctl_siwmode,           /* SIOCSIWMODE */
1185         (iw_handler) ieee80211_ioctl_giwmode,           /* SIOCGIWMODE */
1186         (iw_handler) NULL,                              /* SIOCSIWSENS */
1187         (iw_handler) NULL,                              /* SIOCGIWSENS */
1188         (iw_handler) NULL /* not used */,               /* SIOCSIWRANGE */
1189         (iw_handler) ieee80211_ioctl_giwrange,          /* SIOCGIWRANGE */
1190         (iw_handler) NULL /* not used */,               /* SIOCSIWPRIV */
1191         (iw_handler) NULL /* kernel code */,            /* SIOCGIWPRIV */
1192         (iw_handler) NULL /* not used */,               /* SIOCSIWSTATS */
1193         (iw_handler) NULL /* kernel code */,            /* SIOCGIWSTATS */
1194         (iw_handler) NULL,                              /* SIOCSIWSPY */
1195         (iw_handler) NULL,                              /* SIOCGIWSPY */
1196         (iw_handler) NULL,                              /* SIOCSIWTHRSPY */
1197         (iw_handler) NULL,                              /* SIOCGIWTHRSPY */
1198         (iw_handler) ieee80211_ioctl_siwap,             /* SIOCSIWAP */
1199         (iw_handler) ieee80211_ioctl_giwap,             /* SIOCGIWAP */
1200         (iw_handler) ieee80211_ioctl_siwmlme,           /* SIOCSIWMLME */
1201         (iw_handler) NULL,                              /* SIOCGIWAPLIST */
1202         (iw_handler) ieee80211_ioctl_siwscan,           /* SIOCSIWSCAN */
1203         (iw_handler) ieee80211_ioctl_giwscan,           /* SIOCGIWSCAN */
1204         (iw_handler) ieee80211_ioctl_siwessid,          /* SIOCSIWESSID */
1205         (iw_handler) ieee80211_ioctl_giwessid,          /* SIOCGIWESSID */
1206         (iw_handler) NULL,                              /* SIOCSIWNICKN */
1207         (iw_handler) NULL,                              /* SIOCGIWNICKN */
1208         (iw_handler) NULL,                              /* -- hole -- */
1209         (iw_handler) NULL,                              /* -- hole -- */
1210         (iw_handler) ieee80211_ioctl_siwrate,           /* SIOCSIWRATE */
1211         (iw_handler) ieee80211_ioctl_giwrate,           /* SIOCGIWRATE */
1212         (iw_handler) ieee80211_ioctl_siwrts,            /* SIOCSIWRTS */
1213         (iw_handler) ieee80211_ioctl_giwrts,            /* SIOCGIWRTS */
1214         (iw_handler) ieee80211_ioctl_siwfrag,           /* SIOCSIWFRAG */
1215         (iw_handler) ieee80211_ioctl_giwfrag,           /* SIOCGIWFRAG */
1216         (iw_handler) ieee80211_ioctl_siwtxpower,        /* SIOCSIWTXPOW */
1217         (iw_handler) ieee80211_ioctl_giwtxpower,        /* SIOCGIWTXPOW */
1218         (iw_handler) ieee80211_ioctl_siwretry,          /* SIOCSIWRETRY */
1219         (iw_handler) ieee80211_ioctl_giwretry,          /* SIOCGIWRETRY */
1220         (iw_handler) ieee80211_ioctl_siwencode,         /* SIOCSIWENCODE */
1221         (iw_handler) ieee80211_ioctl_giwencode,         /* SIOCGIWENCODE */
1222         (iw_handler) ieee80211_ioctl_siwpower,          /* SIOCSIWPOWER */
1223         (iw_handler) ieee80211_ioctl_giwpower,          /* SIOCGIWPOWER */
1224         (iw_handler) NULL,                              /* -- hole -- */
1225         (iw_handler) NULL,                              /* -- hole -- */
1226         (iw_handler) ieee80211_ioctl_siwgenie,          /* SIOCSIWGENIE */
1227         (iw_handler) NULL,                              /* SIOCGIWGENIE */
1228         (iw_handler) ieee80211_ioctl_siwauth,           /* SIOCSIWAUTH */
1229         (iw_handler) ieee80211_ioctl_giwauth,           /* SIOCGIWAUTH */
1230         (iw_handler) ieee80211_ioctl_siwencodeext,      /* SIOCSIWENCODEEXT */
1231         (iw_handler) NULL,                              /* SIOCGIWENCODEEXT */
1232         (iw_handler) NULL,                              /* SIOCSIWPMKSA */
1233         (iw_handler) NULL,                              /* -- hole -- */
1234 };
1235
1236 const struct iw_handler_def ieee80211_iw_handler_def =
1237 {
1238         .num_standard   = ARRAY_SIZE(ieee80211_handler),
1239         .standard       = (iw_handler *) ieee80211_handler,
1240         .get_wireless_stats = ieee80211_get_wireless_stats,
1241 };