net: introduce DST_NOPEER dst flag
[linux-2.6.git] / net / wireless / wext-compat.c
1 /*
2  * cfg80211 - wext compat code
3  *
4  * This is temporary code until all wireless functionality is migrated
5  * into cfg80211, when that happens all the exports here go away and
6  * we directly assign the wireless handlers of wireless interfaces.
7  *
8  * Copyright 2008-2009  Johannes Berg <johannes@sipsolutions.net>
9  */
10
11 #include <linux/wireless.h>
12 #include <linux/nl80211.h>
13 #include <linux/if_arp.h>
14 #include <linux/etherdevice.h>
15 #include <linux/slab.h>
16 #include <net/iw_handler.h>
17 #include <net/cfg80211.h>
18 #include "wext-compat.h"
19 #include "core.h"
20
21 int cfg80211_wext_giwname(struct net_device *dev,
22                           struct iw_request_info *info,
23                           char *name, char *extra)
24 {
25         struct wireless_dev *wdev = dev->ieee80211_ptr;
26         struct ieee80211_supported_band *sband;
27         bool is_ht = false, is_a = false, is_b = false, is_g = false;
28
29         if (!wdev)
30                 return -EOPNOTSUPP;
31
32         sband = wdev->wiphy->bands[IEEE80211_BAND_5GHZ];
33         if (sband) {
34                 is_a = true;
35                 is_ht |= sband->ht_cap.ht_supported;
36         }
37
38         sband = wdev->wiphy->bands[IEEE80211_BAND_2GHZ];
39         if (sband) {
40                 int i;
41                 /* Check for mandatory rates */
42                 for (i = 0; i < sband->n_bitrates; i++) {
43                         if (sband->bitrates[i].bitrate == 10)
44                                 is_b = true;
45                         if (sband->bitrates[i].bitrate == 60)
46                                 is_g = true;
47                 }
48                 is_ht |= sband->ht_cap.ht_supported;
49         }
50
51         strcpy(name, "IEEE 802.11");
52         if (is_a)
53                 strcat(name, "a");
54         if (is_b)
55                 strcat(name, "b");
56         if (is_g)
57                 strcat(name, "g");
58         if (is_ht)
59                 strcat(name, "n");
60
61         return 0;
62 }
63 EXPORT_SYMBOL_GPL(cfg80211_wext_giwname);
64
65 int cfg80211_wext_siwmode(struct net_device *dev, struct iw_request_info *info,
66                           u32 *mode, char *extra)
67 {
68         struct wireless_dev *wdev = dev->ieee80211_ptr;
69         struct cfg80211_registered_device *rdev;
70         struct vif_params vifparams;
71         enum nl80211_iftype type;
72         int ret;
73
74         rdev = wiphy_to_dev(wdev->wiphy);
75
76         switch (*mode) {
77         case IW_MODE_INFRA:
78                 type = NL80211_IFTYPE_STATION;
79                 break;
80         case IW_MODE_ADHOC:
81                 type = NL80211_IFTYPE_ADHOC;
82                 break;
83         case IW_MODE_REPEAT:
84                 type = NL80211_IFTYPE_WDS;
85                 break;
86         case IW_MODE_MONITOR:
87                 type = NL80211_IFTYPE_MONITOR;
88                 break;
89         default:
90                 return -EINVAL;
91         }
92
93         if (type == wdev->iftype)
94                 return 0;
95
96         memset(&vifparams, 0, sizeof(vifparams));
97
98         cfg80211_lock_rdev(rdev);
99         ret = cfg80211_change_iface(rdev, dev, type, NULL, &vifparams);
100         cfg80211_unlock_rdev(rdev);
101
102         return ret;
103 }
104 EXPORT_SYMBOL_GPL(cfg80211_wext_siwmode);
105
106 int cfg80211_wext_giwmode(struct net_device *dev, struct iw_request_info *info,
107                           u32 *mode, char *extra)
108 {
109         struct wireless_dev *wdev = dev->ieee80211_ptr;
110
111         if (!wdev)
112                 return -EOPNOTSUPP;
113
114         switch (wdev->iftype) {
115         case NL80211_IFTYPE_AP:
116                 *mode = IW_MODE_MASTER;
117                 break;
118         case NL80211_IFTYPE_STATION:
119                 *mode = IW_MODE_INFRA;
120                 break;
121         case NL80211_IFTYPE_ADHOC:
122                 *mode = IW_MODE_ADHOC;
123                 break;
124         case NL80211_IFTYPE_MONITOR:
125                 *mode = IW_MODE_MONITOR;
126                 break;
127         case NL80211_IFTYPE_WDS:
128                 *mode = IW_MODE_REPEAT;
129                 break;
130         case NL80211_IFTYPE_AP_VLAN:
131                 *mode = IW_MODE_SECOND;         /* FIXME */
132                 break;
133         default:
134                 *mode = IW_MODE_AUTO;
135                 break;
136         }
137         return 0;
138 }
139 EXPORT_SYMBOL_GPL(cfg80211_wext_giwmode);
140
141
142 int cfg80211_wext_giwrange(struct net_device *dev,
143                            struct iw_request_info *info,
144                            struct iw_point *data, char *extra)
145 {
146         struct wireless_dev *wdev = dev->ieee80211_ptr;
147         struct iw_range *range = (struct iw_range *) extra;
148         enum ieee80211_band band;
149         int i, c = 0;
150
151         if (!wdev)
152                 return -EOPNOTSUPP;
153
154         data->length = sizeof(struct iw_range);
155         memset(range, 0, sizeof(struct iw_range));
156
157         range->we_version_compiled = WIRELESS_EXT;
158         range->we_version_source = 21;
159         range->retry_capa = IW_RETRY_LIMIT;
160         range->retry_flags = IW_RETRY_LIMIT;
161         range->min_retry = 0;
162         range->max_retry = 255;
163         range->min_rts = 0;
164         range->max_rts = 2347;
165         range->min_frag = 256;
166         range->max_frag = 2346;
167
168         range->max_encoding_tokens = 4;
169
170         range->max_qual.updated = IW_QUAL_NOISE_INVALID;
171
172         switch (wdev->wiphy->signal_type) {
173         case CFG80211_SIGNAL_TYPE_NONE:
174                 break;
175         case CFG80211_SIGNAL_TYPE_MBM:
176                 range->max_qual.level = -110;
177                 range->max_qual.qual = 70;
178                 range->avg_qual.qual = 35;
179                 range->max_qual.updated |= IW_QUAL_DBM;
180                 range->max_qual.updated |= IW_QUAL_QUAL_UPDATED;
181                 range->max_qual.updated |= IW_QUAL_LEVEL_UPDATED;
182                 break;
183         case CFG80211_SIGNAL_TYPE_UNSPEC:
184                 range->max_qual.level = 100;
185                 range->max_qual.qual = 100;
186                 range->avg_qual.qual = 50;
187                 range->max_qual.updated |= IW_QUAL_QUAL_UPDATED;
188                 range->max_qual.updated |= IW_QUAL_LEVEL_UPDATED;
189                 break;
190         }
191
192         range->avg_qual.level = range->max_qual.level / 2;
193         range->avg_qual.noise = range->max_qual.noise / 2;
194         range->avg_qual.updated = range->max_qual.updated;
195
196         for (i = 0; i < wdev->wiphy->n_cipher_suites; i++) {
197                 switch (wdev->wiphy->cipher_suites[i]) {
198                 case WLAN_CIPHER_SUITE_TKIP:
199                         range->enc_capa |= (IW_ENC_CAPA_CIPHER_TKIP |
200                                             IW_ENC_CAPA_WPA);
201                         break;
202
203                 case WLAN_CIPHER_SUITE_CCMP:
204                         range->enc_capa |= (IW_ENC_CAPA_CIPHER_CCMP |
205                                             IW_ENC_CAPA_WPA2);
206                         break;
207
208                 case WLAN_CIPHER_SUITE_WEP40:
209                         range->encoding_size[range->num_encoding_sizes++] =
210                                 WLAN_KEY_LEN_WEP40;
211                         break;
212
213                 case WLAN_CIPHER_SUITE_WEP104:
214                         range->encoding_size[range->num_encoding_sizes++] =
215                                 WLAN_KEY_LEN_WEP104;
216                         break;
217                 }
218         }
219
220         for (band = 0; band < IEEE80211_NUM_BANDS; band ++) {
221                 struct ieee80211_supported_band *sband;
222
223                 sband = wdev->wiphy->bands[band];
224
225                 if (!sband)
226                         continue;
227
228                 for (i = 0; i < sband->n_channels && c < IW_MAX_FREQUENCIES; i++) {
229                         struct ieee80211_channel *chan = &sband->channels[i];
230
231                         if (!(chan->flags & IEEE80211_CHAN_DISABLED)) {
232                                 range->freq[c].i =
233                                         ieee80211_frequency_to_channel(
234                                                 chan->center_freq);
235                                 range->freq[c].m = chan->center_freq;
236                                 range->freq[c].e = 6;
237                                 c++;
238                         }
239                 }
240         }
241         range->num_channels = c;
242         range->num_frequency = c;
243
244         IW_EVENT_CAPA_SET_KERNEL(range->event_capa);
245         IW_EVENT_CAPA_SET(range->event_capa, SIOCGIWAP);
246         IW_EVENT_CAPA_SET(range->event_capa, SIOCGIWSCAN);
247
248         if (wdev->wiphy->max_scan_ssids > 0)
249                 range->scan_capa |= IW_SCAN_CAPA_ESSID;
250
251         return 0;
252 }
253 EXPORT_SYMBOL_GPL(cfg80211_wext_giwrange);
254
255
256 /**
257  * cfg80211_wext_freq - get wext frequency for non-"auto"
258  * @wiphy: the wiphy
259  * @freq: the wext freq encoding
260  *
261  * Returns a frequency, or a negative error code, or 0 for auto.
262  */
263 int cfg80211_wext_freq(struct wiphy *wiphy, struct iw_freq *freq)
264 {
265         /*
266          * Parse frequency - return 0 for auto and
267          * -EINVAL for impossible things.
268          */
269         if (freq->e == 0) {
270                 enum ieee80211_band band = IEEE80211_BAND_2GHZ;
271                 if (freq->m < 0)
272                         return 0;
273                 if (freq->m > 14)
274                         band = IEEE80211_BAND_5GHZ;
275                 return ieee80211_channel_to_frequency(freq->m, band);
276         } else {
277                 int i, div = 1000000;
278                 for (i = 0; i < freq->e; i++)
279                         div /= 10;
280                 if (div <= 0)
281                         return -EINVAL;
282                 return freq->m / div;
283         }
284 }
285
286 int cfg80211_wext_siwrts(struct net_device *dev,
287                          struct iw_request_info *info,
288                          struct iw_param *rts, char *extra)
289 {
290         struct wireless_dev *wdev = dev->ieee80211_ptr;
291         struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
292         u32 orts = wdev->wiphy->rts_threshold;
293         int err;
294
295         if (rts->disabled || !rts->fixed)
296                 wdev->wiphy->rts_threshold = (u32) -1;
297         else if (rts->value < 0)
298                 return -EINVAL;
299         else
300                 wdev->wiphy->rts_threshold = rts->value;
301
302         err = rdev->ops->set_wiphy_params(wdev->wiphy,
303                                           WIPHY_PARAM_RTS_THRESHOLD);
304         if (err)
305                 wdev->wiphy->rts_threshold = orts;
306
307         return err;
308 }
309 EXPORT_SYMBOL_GPL(cfg80211_wext_siwrts);
310
311 int cfg80211_wext_giwrts(struct net_device *dev,
312                          struct iw_request_info *info,
313                          struct iw_param *rts, char *extra)
314 {
315         struct wireless_dev *wdev = dev->ieee80211_ptr;
316
317         rts->value = wdev->wiphy->rts_threshold;
318         rts->disabled = rts->value == (u32) -1;
319         rts->fixed = 1;
320
321         return 0;
322 }
323 EXPORT_SYMBOL_GPL(cfg80211_wext_giwrts);
324
325 int cfg80211_wext_siwfrag(struct net_device *dev,
326                           struct iw_request_info *info,
327                           struct iw_param *frag, char *extra)
328 {
329         struct wireless_dev *wdev = dev->ieee80211_ptr;
330         struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
331         u32 ofrag = wdev->wiphy->frag_threshold;
332         int err;
333
334         if (frag->disabled || !frag->fixed)
335                 wdev->wiphy->frag_threshold = (u32) -1;
336         else if (frag->value < 256)
337                 return -EINVAL;
338         else {
339                 /* Fragment length must be even, so strip LSB. */
340                 wdev->wiphy->frag_threshold = frag->value & ~0x1;
341         }
342
343         err = rdev->ops->set_wiphy_params(wdev->wiphy,
344                                           WIPHY_PARAM_FRAG_THRESHOLD);
345         if (err)
346                 wdev->wiphy->frag_threshold = ofrag;
347
348         return err;
349 }
350 EXPORT_SYMBOL_GPL(cfg80211_wext_siwfrag);
351
352 int cfg80211_wext_giwfrag(struct net_device *dev,
353                           struct iw_request_info *info,
354                           struct iw_param *frag, char *extra)
355 {
356         struct wireless_dev *wdev = dev->ieee80211_ptr;
357
358         frag->value = wdev->wiphy->frag_threshold;
359         frag->disabled = frag->value == (u32) -1;
360         frag->fixed = 1;
361
362         return 0;
363 }
364 EXPORT_SYMBOL_GPL(cfg80211_wext_giwfrag);
365
366 int cfg80211_wext_siwretry(struct net_device *dev,
367                            struct iw_request_info *info,
368                            struct iw_param *retry, char *extra)
369 {
370         struct wireless_dev *wdev = dev->ieee80211_ptr;
371         struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
372         u32 changed = 0;
373         u8 olong = wdev->wiphy->retry_long;
374         u8 oshort = wdev->wiphy->retry_short;
375         int err;
376
377         if (retry->disabled ||
378             (retry->flags & IW_RETRY_TYPE) != IW_RETRY_LIMIT)
379                 return -EINVAL;
380
381         if (retry->flags & IW_RETRY_LONG) {
382                 wdev->wiphy->retry_long = retry->value;
383                 changed |= WIPHY_PARAM_RETRY_LONG;
384         } else if (retry->flags & IW_RETRY_SHORT) {
385                 wdev->wiphy->retry_short = retry->value;
386                 changed |= WIPHY_PARAM_RETRY_SHORT;
387         } else {
388                 wdev->wiphy->retry_short = retry->value;
389                 wdev->wiphy->retry_long = retry->value;
390                 changed |= WIPHY_PARAM_RETRY_LONG;
391                 changed |= WIPHY_PARAM_RETRY_SHORT;
392         }
393
394         if (!changed)
395                 return 0;
396
397         err = rdev->ops->set_wiphy_params(wdev->wiphy, changed);
398         if (err) {
399                 wdev->wiphy->retry_short = oshort;
400                 wdev->wiphy->retry_long = olong;
401         }
402
403         return err;
404 }
405 EXPORT_SYMBOL_GPL(cfg80211_wext_siwretry);
406
407 int cfg80211_wext_giwretry(struct net_device *dev,
408                            struct iw_request_info *info,
409                            struct iw_param *retry, char *extra)
410 {
411         struct wireless_dev *wdev = dev->ieee80211_ptr;
412
413         retry->disabled = 0;
414
415         if (retry->flags == 0 || (retry->flags & IW_RETRY_SHORT)) {
416                 /*
417                  * First return short value, iwconfig will ask long value
418                  * later if needed
419                  */
420                 retry->flags |= IW_RETRY_LIMIT;
421                 retry->value = wdev->wiphy->retry_short;
422                 if (wdev->wiphy->retry_long != wdev->wiphy->retry_short)
423                         retry->flags |= IW_RETRY_LONG;
424
425                 return 0;
426         }
427
428         if (retry->flags & IW_RETRY_LONG) {
429                 retry->flags = IW_RETRY_LIMIT | IW_RETRY_LONG;
430                 retry->value = wdev->wiphy->retry_long;
431         }
432
433         return 0;
434 }
435 EXPORT_SYMBOL_GPL(cfg80211_wext_giwretry);
436
437 static int __cfg80211_set_encryption(struct cfg80211_registered_device *rdev,
438                                      struct net_device *dev, bool pairwise,
439                                      const u8 *addr, bool remove, bool tx_key,
440                                      int idx, struct key_params *params)
441 {
442         struct wireless_dev *wdev = dev->ieee80211_ptr;
443         int err, i;
444         bool rejoin = false;
445
446         if (pairwise && !addr)
447                 return -EINVAL;
448
449         if (!wdev->wext.keys) {
450                 wdev->wext.keys = kzalloc(sizeof(*wdev->wext.keys),
451                                               GFP_KERNEL);
452                 if (!wdev->wext.keys)
453                         return -ENOMEM;
454                 for (i = 0; i < 6; i++)
455                         wdev->wext.keys->params[i].key =
456                                 wdev->wext.keys->data[i];
457         }
458
459         if (wdev->iftype != NL80211_IFTYPE_ADHOC &&
460             wdev->iftype != NL80211_IFTYPE_STATION)
461                 return -EOPNOTSUPP;
462
463         if (params->cipher == WLAN_CIPHER_SUITE_AES_CMAC) {
464                 if (!wdev->current_bss)
465                         return -ENOLINK;
466
467                 if (!rdev->ops->set_default_mgmt_key)
468                         return -EOPNOTSUPP;
469
470                 if (idx < 4 || idx > 5)
471                         return -EINVAL;
472         } else if (idx < 0 || idx > 3)
473                 return -EINVAL;
474
475         if (remove) {
476                 err = 0;
477                 if (wdev->current_bss) {
478                         /*
479                          * If removing the current TX key, we will need to
480                          * join a new IBSS without the privacy bit clear.
481                          */
482                         if (idx == wdev->wext.default_key &&
483                             wdev->iftype == NL80211_IFTYPE_ADHOC) {
484                                 __cfg80211_leave_ibss(rdev, wdev->netdev, true);
485                                 rejoin = true;
486                         }
487
488                         if (!pairwise && addr &&
489                             !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
490                                 err = -ENOENT;
491                         else
492                                 err = rdev->ops->del_key(&rdev->wiphy, dev, idx,
493                                                          pairwise, addr);
494                 }
495                 wdev->wext.connect.privacy = false;
496                 /*
497                  * Applications using wireless extensions expect to be
498                  * able to delete keys that don't exist, so allow that.
499                  */
500                 if (err == -ENOENT)
501                         err = 0;
502                 if (!err) {
503                         if (!addr) {
504                                 wdev->wext.keys->params[idx].key_len = 0;
505                                 wdev->wext.keys->params[idx].cipher = 0;
506                         }
507                         if (idx == wdev->wext.default_key)
508                                 wdev->wext.default_key = -1;
509                         else if (idx == wdev->wext.default_mgmt_key)
510                                 wdev->wext.default_mgmt_key = -1;
511                 }
512
513                 if (!err && rejoin)
514                         err = cfg80211_ibss_wext_join(rdev, wdev);
515
516                 return err;
517         }
518
519         if (addr)
520                 tx_key = false;
521
522         if (cfg80211_validate_key_settings(rdev, params, idx, pairwise, addr))
523                 return -EINVAL;
524
525         err = 0;
526         if (wdev->current_bss)
527                 err = rdev->ops->add_key(&rdev->wiphy, dev, idx,
528                                          pairwise, addr, params);
529         if (err)
530                 return err;
531
532         if (!addr) {
533                 wdev->wext.keys->params[idx] = *params;
534                 memcpy(wdev->wext.keys->data[idx],
535                         params->key, params->key_len);
536                 wdev->wext.keys->params[idx].key =
537                         wdev->wext.keys->data[idx];
538         }
539
540         if ((params->cipher == WLAN_CIPHER_SUITE_WEP40 ||
541              params->cipher == WLAN_CIPHER_SUITE_WEP104) &&
542             (tx_key || (!addr && wdev->wext.default_key == -1))) {
543                 if (wdev->current_bss) {
544                         /*
545                          * If we are getting a new TX key from not having
546                          * had one before we need to join a new IBSS with
547                          * the privacy bit set.
548                          */
549                         if (wdev->iftype == NL80211_IFTYPE_ADHOC &&
550                             wdev->wext.default_key == -1) {
551                                 __cfg80211_leave_ibss(rdev, wdev->netdev, true);
552                                 rejoin = true;
553                         }
554                         err = rdev->ops->set_default_key(&rdev->wiphy, dev,
555                                                          idx, true, true);
556                 }
557                 if (!err) {
558                         wdev->wext.default_key = idx;
559                         if (rejoin)
560                                 err = cfg80211_ibss_wext_join(rdev, wdev);
561                 }
562                 return err;
563         }
564
565         if (params->cipher == WLAN_CIPHER_SUITE_AES_CMAC &&
566             (tx_key || (!addr && wdev->wext.default_mgmt_key == -1))) {
567                 if (wdev->current_bss)
568                         err = rdev->ops->set_default_mgmt_key(&rdev->wiphy,
569                                                               dev, idx);
570                 if (!err)
571                         wdev->wext.default_mgmt_key = idx;
572                 return err;
573         }
574
575         return 0;
576 }
577
578 static int cfg80211_set_encryption(struct cfg80211_registered_device *rdev,
579                                    struct net_device *dev, bool pairwise,
580                                    const u8 *addr, bool remove, bool tx_key,
581                                    int idx, struct key_params *params)
582 {
583         int err;
584
585         /* devlist mutex needed for possible IBSS re-join */
586         mutex_lock(&rdev->devlist_mtx);
587         wdev_lock(dev->ieee80211_ptr);
588         err = __cfg80211_set_encryption(rdev, dev, pairwise, addr,
589                                         remove, tx_key, idx, params);
590         wdev_unlock(dev->ieee80211_ptr);
591         mutex_unlock(&rdev->devlist_mtx);
592
593         return err;
594 }
595
596 int cfg80211_wext_siwencode(struct net_device *dev,
597                             struct iw_request_info *info,
598                             struct iw_point *erq, char *keybuf)
599 {
600         struct wireless_dev *wdev = dev->ieee80211_ptr;
601         struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
602         int idx, err;
603         bool remove = false;
604         struct key_params params;
605
606         if (wdev->iftype != NL80211_IFTYPE_STATION &&
607             wdev->iftype != NL80211_IFTYPE_ADHOC)
608                 return -EOPNOTSUPP;
609
610         /* no use -- only MFP (set_default_mgmt_key) is optional */
611         if (!rdev->ops->del_key ||
612             !rdev->ops->add_key ||
613             !rdev->ops->set_default_key)
614                 return -EOPNOTSUPP;
615
616         idx = erq->flags & IW_ENCODE_INDEX;
617         if (idx == 0) {
618                 idx = wdev->wext.default_key;
619                 if (idx < 0)
620                         idx = 0;
621         } else if (idx < 1 || idx > 4)
622                 return -EINVAL;
623         else
624                 idx--;
625
626         if (erq->flags & IW_ENCODE_DISABLED)
627                 remove = true;
628         else if (erq->length == 0) {
629                 /* No key data - just set the default TX key index */
630                 err = 0;
631                 wdev_lock(wdev);
632                 if (wdev->current_bss)
633                         err = rdev->ops->set_default_key(&rdev->wiphy, dev,
634                                                          idx, true, true);
635                 if (!err)
636                         wdev->wext.default_key = idx;
637                 wdev_unlock(wdev);
638                 return err;
639         }
640
641         memset(&params, 0, sizeof(params));
642         params.key = keybuf;
643         params.key_len = erq->length;
644         if (erq->length == 5)
645                 params.cipher = WLAN_CIPHER_SUITE_WEP40;
646         else if (erq->length == 13)
647                 params.cipher = WLAN_CIPHER_SUITE_WEP104;
648         else if (!remove)
649                 return -EINVAL;
650
651         return cfg80211_set_encryption(rdev, dev, false, NULL, remove,
652                                        wdev->wext.default_key == -1,
653                                        idx, &params);
654 }
655 EXPORT_SYMBOL_GPL(cfg80211_wext_siwencode);
656
657 int cfg80211_wext_siwencodeext(struct net_device *dev,
658                                struct iw_request_info *info,
659                                struct iw_point *erq, char *extra)
660 {
661         struct wireless_dev *wdev = dev->ieee80211_ptr;
662         struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
663         struct iw_encode_ext *ext = (struct iw_encode_ext *) extra;
664         const u8 *addr;
665         int idx;
666         bool remove = false;
667         struct key_params params;
668         u32 cipher;
669
670         if (wdev->iftype != NL80211_IFTYPE_STATION &&
671             wdev->iftype != NL80211_IFTYPE_ADHOC)
672                 return -EOPNOTSUPP;
673
674         /* no use -- only MFP (set_default_mgmt_key) is optional */
675         if (!rdev->ops->del_key ||
676             !rdev->ops->add_key ||
677             !rdev->ops->set_default_key)
678                 return -EOPNOTSUPP;
679
680         switch (ext->alg) {
681         case IW_ENCODE_ALG_NONE:
682                 remove = true;
683                 cipher = 0;
684                 break;
685         case IW_ENCODE_ALG_WEP:
686                 if (ext->key_len == 5)
687                         cipher = WLAN_CIPHER_SUITE_WEP40;
688                 else if (ext->key_len == 13)
689                         cipher = WLAN_CIPHER_SUITE_WEP104;
690                 else
691                         return -EINVAL;
692                 break;
693         case IW_ENCODE_ALG_TKIP:
694                 cipher = WLAN_CIPHER_SUITE_TKIP;
695                 break;
696         case IW_ENCODE_ALG_CCMP:
697                 cipher = WLAN_CIPHER_SUITE_CCMP;
698                 break;
699         case IW_ENCODE_ALG_AES_CMAC:
700                 cipher = WLAN_CIPHER_SUITE_AES_CMAC;
701                 break;
702         default:
703                 return -EOPNOTSUPP;
704         }
705
706         if (erq->flags & IW_ENCODE_DISABLED)
707                 remove = true;
708
709         idx = erq->flags & IW_ENCODE_INDEX;
710         if (cipher == WLAN_CIPHER_SUITE_AES_CMAC) {
711                 if (idx < 4 || idx > 5) {
712                         idx = wdev->wext.default_mgmt_key;
713                         if (idx < 0)
714                                 return -EINVAL;
715                 } else
716                         idx--;
717         } else {
718                 if (idx < 1 || idx > 4) {
719                         idx = wdev->wext.default_key;
720                         if (idx < 0)
721                                 return -EINVAL;
722                 } else
723                         idx--;
724         }
725
726         addr = ext->addr.sa_data;
727         if (is_broadcast_ether_addr(addr))
728                 addr = NULL;
729
730         memset(&params, 0, sizeof(params));
731         params.key = ext->key;
732         params.key_len = ext->key_len;
733         params.cipher = cipher;
734
735         if (ext->ext_flags & IW_ENCODE_EXT_RX_SEQ_VALID) {
736                 params.seq = ext->rx_seq;
737                 params.seq_len = 6;
738         }
739
740         return cfg80211_set_encryption(
741                         rdev, dev,
742                         !(ext->ext_flags & IW_ENCODE_EXT_GROUP_KEY),
743                         addr, remove,
744                         ext->ext_flags & IW_ENCODE_EXT_SET_TX_KEY,
745                         idx, &params);
746 }
747 EXPORT_SYMBOL_GPL(cfg80211_wext_siwencodeext);
748
749 int cfg80211_wext_giwencode(struct net_device *dev,
750                             struct iw_request_info *info,
751                             struct iw_point *erq, char *keybuf)
752 {
753         struct wireless_dev *wdev = dev->ieee80211_ptr;
754         int idx;
755
756         if (wdev->iftype != NL80211_IFTYPE_STATION &&
757             wdev->iftype != NL80211_IFTYPE_ADHOC)
758                 return -EOPNOTSUPP;
759
760         idx = erq->flags & IW_ENCODE_INDEX;
761         if (idx == 0) {
762                 idx = wdev->wext.default_key;
763                 if (idx < 0)
764                         idx = 0;
765         } else if (idx < 1 || idx > 4)
766                 return -EINVAL;
767         else
768                 idx--;
769
770         erq->flags = idx + 1;
771
772         if (!wdev->wext.keys || !wdev->wext.keys->params[idx].cipher) {
773                 erq->flags |= IW_ENCODE_DISABLED;
774                 erq->length = 0;
775                 return 0;
776         }
777
778         erq->length = min_t(size_t, erq->length,
779                             wdev->wext.keys->params[idx].key_len);
780         memcpy(keybuf, wdev->wext.keys->params[idx].key, erq->length);
781         erq->flags |= IW_ENCODE_ENABLED;
782
783         return 0;
784 }
785 EXPORT_SYMBOL_GPL(cfg80211_wext_giwencode);
786
787 int cfg80211_wext_siwfreq(struct net_device *dev,
788                           struct iw_request_info *info,
789                           struct iw_freq *wextfreq, char *extra)
790 {
791         struct wireless_dev *wdev = dev->ieee80211_ptr;
792         struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
793         int freq, err;
794
795         switch (wdev->iftype) {
796         case NL80211_IFTYPE_STATION:
797                 return cfg80211_mgd_wext_siwfreq(dev, info, wextfreq, extra);
798         case NL80211_IFTYPE_ADHOC:
799                 return cfg80211_ibss_wext_siwfreq(dev, info, wextfreq, extra);
800         case NL80211_IFTYPE_MONITOR:
801         case NL80211_IFTYPE_WDS:
802         case NL80211_IFTYPE_MESH_POINT:
803                 freq = cfg80211_wext_freq(wdev->wiphy, wextfreq);
804                 if (freq < 0)
805                         return freq;
806                 if (freq == 0)
807                         return -EINVAL;
808                 mutex_lock(&rdev->devlist_mtx);
809                 wdev_lock(wdev);
810                 err = cfg80211_set_freq(rdev, wdev, freq, NL80211_CHAN_NO_HT);
811                 wdev_unlock(wdev);
812                 mutex_unlock(&rdev->devlist_mtx);
813                 return err;
814         default:
815                 return -EOPNOTSUPP;
816         }
817 }
818 EXPORT_SYMBOL_GPL(cfg80211_wext_siwfreq);
819
820 int cfg80211_wext_giwfreq(struct net_device *dev,
821                           struct iw_request_info *info,
822                           struct iw_freq *freq, char *extra)
823 {
824         struct wireless_dev *wdev = dev->ieee80211_ptr;
825
826         switch (wdev->iftype) {
827         case NL80211_IFTYPE_STATION:
828                 return cfg80211_mgd_wext_giwfreq(dev, info, freq, extra);
829         case NL80211_IFTYPE_ADHOC:
830                 return cfg80211_ibss_wext_giwfreq(dev, info, freq, extra);
831         default:
832                 if (!wdev->channel)
833                         return -EINVAL;
834                 freq->m = wdev->channel->center_freq;
835                 freq->e = 6;
836                 return 0;
837         }
838 }
839 EXPORT_SYMBOL_GPL(cfg80211_wext_giwfreq);
840
841 int cfg80211_wext_siwtxpower(struct net_device *dev,
842                              struct iw_request_info *info,
843                              union iwreq_data *data, char *extra)
844 {
845         struct wireless_dev *wdev = dev->ieee80211_ptr;
846         struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
847         enum nl80211_tx_power_setting type;
848         int dbm = 0;
849
850         if ((data->txpower.flags & IW_TXPOW_TYPE) != IW_TXPOW_DBM)
851                 return -EINVAL;
852         if (data->txpower.flags & IW_TXPOW_RANGE)
853                 return -EINVAL;
854
855         if (!rdev->ops->set_tx_power)
856                 return -EOPNOTSUPP;
857
858         /* only change when not disabling */
859         if (!data->txpower.disabled) {
860                 rfkill_set_sw_state(rdev->rfkill, false);
861
862                 if (data->txpower.fixed) {
863                         /*
864                          * wext doesn't support negative values, see
865                          * below where it's for automatic
866                          */
867                         if (data->txpower.value < 0)
868                                 return -EINVAL;
869                         dbm = data->txpower.value;
870                         type = NL80211_TX_POWER_FIXED;
871                         /* TODO: do regulatory check! */
872                 } else {
873                         /*
874                          * Automatic power level setting, max being the value
875                          * passed in from userland.
876                          */
877                         if (data->txpower.value < 0) {
878                                 type = NL80211_TX_POWER_AUTOMATIC;
879                         } else {
880                                 dbm = data->txpower.value;
881                                 type = NL80211_TX_POWER_LIMITED;
882                         }
883                 }
884         } else {
885                 rfkill_set_sw_state(rdev->rfkill, true);
886                 schedule_work(&rdev->rfkill_sync);
887                 return 0;
888         }
889
890         return rdev->ops->set_tx_power(wdev->wiphy, type, DBM_TO_MBM(dbm));
891 }
892 EXPORT_SYMBOL_GPL(cfg80211_wext_siwtxpower);
893
894 int cfg80211_wext_giwtxpower(struct net_device *dev,
895                              struct iw_request_info *info,
896                              union iwreq_data *data, char *extra)
897 {
898         struct wireless_dev *wdev = dev->ieee80211_ptr;
899         struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
900         int err, val;
901
902         if ((data->txpower.flags & IW_TXPOW_TYPE) != IW_TXPOW_DBM)
903                 return -EINVAL;
904         if (data->txpower.flags & IW_TXPOW_RANGE)
905                 return -EINVAL;
906
907         if (!rdev->ops->get_tx_power)
908                 return -EOPNOTSUPP;
909
910         err = rdev->ops->get_tx_power(wdev->wiphy, &val);
911         if (err)
912                 return err;
913
914         /* well... oh well */
915         data->txpower.fixed = 1;
916         data->txpower.disabled = rfkill_blocked(rdev->rfkill);
917         data->txpower.value = val;
918         data->txpower.flags = IW_TXPOW_DBM;
919
920         return 0;
921 }
922 EXPORT_SYMBOL_GPL(cfg80211_wext_giwtxpower);
923
924 static int cfg80211_set_auth_alg(struct wireless_dev *wdev,
925                                  s32 auth_alg)
926 {
927         int nr_alg = 0;
928
929         if (!auth_alg)
930                 return -EINVAL;
931
932         if (auth_alg & ~(IW_AUTH_ALG_OPEN_SYSTEM |
933                          IW_AUTH_ALG_SHARED_KEY |
934                          IW_AUTH_ALG_LEAP))
935                 return -EINVAL;
936
937         if (auth_alg & IW_AUTH_ALG_OPEN_SYSTEM) {
938                 nr_alg++;
939                 wdev->wext.connect.auth_type = NL80211_AUTHTYPE_OPEN_SYSTEM;
940         }
941
942         if (auth_alg & IW_AUTH_ALG_SHARED_KEY) {
943                 nr_alg++;
944                 wdev->wext.connect.auth_type = NL80211_AUTHTYPE_SHARED_KEY;
945         }
946
947         if (auth_alg & IW_AUTH_ALG_LEAP) {
948                 nr_alg++;
949                 wdev->wext.connect.auth_type = NL80211_AUTHTYPE_NETWORK_EAP;
950         }
951
952         if (nr_alg > 1)
953                 wdev->wext.connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
954
955         return 0;
956 }
957
958 static int cfg80211_set_wpa_version(struct wireless_dev *wdev, u32 wpa_versions)
959 {
960         if (wpa_versions & ~(IW_AUTH_WPA_VERSION_WPA |
961                              IW_AUTH_WPA_VERSION_WPA2|
962                              IW_AUTH_WPA_VERSION_DISABLED))
963                 return -EINVAL;
964
965         if ((wpa_versions & IW_AUTH_WPA_VERSION_DISABLED) &&
966             (wpa_versions & (IW_AUTH_WPA_VERSION_WPA|
967                              IW_AUTH_WPA_VERSION_WPA2)))
968                 return -EINVAL;
969
970         if (wpa_versions & IW_AUTH_WPA_VERSION_DISABLED)
971                 wdev->wext.connect.crypto.wpa_versions &=
972                         ~(NL80211_WPA_VERSION_1|NL80211_WPA_VERSION_2);
973
974         if (wpa_versions & IW_AUTH_WPA_VERSION_WPA)
975                 wdev->wext.connect.crypto.wpa_versions |=
976                         NL80211_WPA_VERSION_1;
977
978         if (wpa_versions & IW_AUTH_WPA_VERSION_WPA2)
979                 wdev->wext.connect.crypto.wpa_versions |=
980                         NL80211_WPA_VERSION_2;
981
982         return 0;
983 }
984
985 static int cfg80211_set_cipher_group(struct wireless_dev *wdev, u32 cipher)
986 {
987         if (cipher & IW_AUTH_CIPHER_WEP40)
988                 wdev->wext.connect.crypto.cipher_group =
989                         WLAN_CIPHER_SUITE_WEP40;
990         else if (cipher & IW_AUTH_CIPHER_WEP104)
991                 wdev->wext.connect.crypto.cipher_group =
992                         WLAN_CIPHER_SUITE_WEP104;
993         else if (cipher & IW_AUTH_CIPHER_TKIP)
994                 wdev->wext.connect.crypto.cipher_group =
995                         WLAN_CIPHER_SUITE_TKIP;
996         else if (cipher & IW_AUTH_CIPHER_CCMP)
997                 wdev->wext.connect.crypto.cipher_group =
998                         WLAN_CIPHER_SUITE_CCMP;
999         else if (cipher & IW_AUTH_CIPHER_AES_CMAC)
1000                 wdev->wext.connect.crypto.cipher_group =
1001                         WLAN_CIPHER_SUITE_AES_CMAC;
1002         else if (cipher & IW_AUTH_CIPHER_NONE)
1003                 wdev->wext.connect.crypto.cipher_group = 0;
1004         else
1005                 return -EINVAL;
1006
1007         return 0;
1008 }
1009
1010 static int cfg80211_set_cipher_pairwise(struct wireless_dev *wdev, u32 cipher)
1011 {
1012         int nr_ciphers = 0;
1013         u32 *ciphers_pairwise = wdev->wext.connect.crypto.ciphers_pairwise;
1014
1015         if (cipher & IW_AUTH_CIPHER_WEP40) {
1016                 ciphers_pairwise[nr_ciphers] = WLAN_CIPHER_SUITE_WEP40;
1017                 nr_ciphers++;
1018         }
1019
1020         if (cipher & IW_AUTH_CIPHER_WEP104) {
1021                 ciphers_pairwise[nr_ciphers] = WLAN_CIPHER_SUITE_WEP104;
1022                 nr_ciphers++;
1023         }
1024
1025         if (cipher & IW_AUTH_CIPHER_TKIP) {
1026                 ciphers_pairwise[nr_ciphers] = WLAN_CIPHER_SUITE_TKIP;
1027                 nr_ciphers++;
1028         }
1029
1030         if (cipher & IW_AUTH_CIPHER_CCMP) {
1031                 ciphers_pairwise[nr_ciphers] = WLAN_CIPHER_SUITE_CCMP;
1032                 nr_ciphers++;
1033         }
1034
1035         if (cipher & IW_AUTH_CIPHER_AES_CMAC) {
1036                 ciphers_pairwise[nr_ciphers] = WLAN_CIPHER_SUITE_AES_CMAC;
1037                 nr_ciphers++;
1038         }
1039
1040         BUILD_BUG_ON(NL80211_MAX_NR_CIPHER_SUITES < 5);
1041
1042         wdev->wext.connect.crypto.n_ciphers_pairwise = nr_ciphers;
1043
1044         return 0;
1045 }
1046
1047
1048 static int cfg80211_set_key_mgt(struct wireless_dev *wdev, u32 key_mgt)
1049 {
1050         int nr_akm_suites = 0;
1051
1052         if (key_mgt & ~(IW_AUTH_KEY_MGMT_802_1X |
1053                         IW_AUTH_KEY_MGMT_PSK))
1054                 return -EINVAL;
1055
1056         if (key_mgt & IW_AUTH_KEY_MGMT_802_1X) {
1057                 wdev->wext.connect.crypto.akm_suites[nr_akm_suites] =
1058                         WLAN_AKM_SUITE_8021X;
1059                 nr_akm_suites++;
1060         }
1061
1062         if (key_mgt & IW_AUTH_KEY_MGMT_PSK) {
1063                 wdev->wext.connect.crypto.akm_suites[nr_akm_suites] =
1064                         WLAN_AKM_SUITE_PSK;
1065                 nr_akm_suites++;
1066         }
1067
1068         wdev->wext.connect.crypto.n_akm_suites = nr_akm_suites;
1069
1070         return 0;
1071 }
1072
1073 int cfg80211_wext_siwauth(struct net_device *dev,
1074                           struct iw_request_info *info,
1075                           struct iw_param *data, char *extra)
1076 {
1077         struct wireless_dev *wdev = dev->ieee80211_ptr;
1078
1079         if (wdev->iftype != NL80211_IFTYPE_STATION)
1080                 return -EOPNOTSUPP;
1081
1082         switch (data->flags & IW_AUTH_INDEX) {
1083         case IW_AUTH_PRIVACY_INVOKED:
1084                 wdev->wext.connect.privacy = data->value;
1085                 return 0;
1086         case IW_AUTH_WPA_VERSION:
1087                 return cfg80211_set_wpa_version(wdev, data->value);
1088         case IW_AUTH_CIPHER_GROUP:
1089                 return cfg80211_set_cipher_group(wdev, data->value);
1090         case IW_AUTH_KEY_MGMT:
1091                 return cfg80211_set_key_mgt(wdev, data->value);
1092         case IW_AUTH_CIPHER_PAIRWISE:
1093                 return cfg80211_set_cipher_pairwise(wdev, data->value);
1094         case IW_AUTH_80211_AUTH_ALG:
1095                 return cfg80211_set_auth_alg(wdev, data->value);
1096         case IW_AUTH_WPA_ENABLED:
1097         case IW_AUTH_RX_UNENCRYPTED_EAPOL:
1098         case IW_AUTH_DROP_UNENCRYPTED:
1099         case IW_AUTH_MFP:
1100                 return 0;
1101         default:
1102                 return -EOPNOTSUPP;
1103         }
1104 }
1105 EXPORT_SYMBOL_GPL(cfg80211_wext_siwauth);
1106
1107 int cfg80211_wext_giwauth(struct net_device *dev,
1108                           struct iw_request_info *info,
1109                           struct iw_param *data, char *extra)
1110 {
1111         /* XXX: what do we need? */
1112
1113         return -EOPNOTSUPP;
1114 }
1115 EXPORT_SYMBOL_GPL(cfg80211_wext_giwauth);
1116
1117 int cfg80211_wext_siwpower(struct net_device *dev,
1118                            struct iw_request_info *info,
1119                            struct iw_param *wrq, char *extra)
1120 {
1121         struct wireless_dev *wdev = dev->ieee80211_ptr;
1122         struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
1123         bool ps = wdev->ps;
1124         int timeout = wdev->ps_timeout;
1125         int err;
1126
1127         if (wdev->iftype != NL80211_IFTYPE_STATION)
1128                 return -EINVAL;
1129
1130         if (!rdev->ops->set_power_mgmt)
1131                 return -EOPNOTSUPP;
1132
1133         if (wrq->disabled) {
1134                 ps = false;
1135         } else {
1136                 switch (wrq->flags & IW_POWER_MODE) {
1137                 case IW_POWER_ON:       /* If not specified */
1138                 case IW_POWER_MODE:     /* If set all mask */
1139                 case IW_POWER_ALL_R:    /* If explicitely state all */
1140                         ps = true;
1141                         break;
1142                 default:                /* Otherwise we ignore */
1143                         return -EINVAL;
1144                 }
1145
1146                 if (wrq->flags & ~(IW_POWER_MODE | IW_POWER_TIMEOUT))
1147                         return -EINVAL;
1148
1149                 if (wrq->flags & IW_POWER_TIMEOUT)
1150                         timeout = wrq->value / 1000;
1151         }
1152
1153         err = rdev->ops->set_power_mgmt(wdev->wiphy, dev, ps, timeout);
1154         if (err)
1155                 return err;
1156
1157         wdev->ps = ps;
1158         wdev->ps_timeout = timeout;
1159
1160         return 0;
1161
1162 }
1163 EXPORT_SYMBOL_GPL(cfg80211_wext_siwpower);
1164
1165 int cfg80211_wext_giwpower(struct net_device *dev,
1166                            struct iw_request_info *info,
1167                            struct iw_param *wrq, char *extra)
1168 {
1169         struct wireless_dev *wdev = dev->ieee80211_ptr;
1170
1171         wrq->disabled = !wdev->ps;
1172
1173         return 0;
1174 }
1175 EXPORT_SYMBOL_GPL(cfg80211_wext_giwpower);
1176
1177 static int cfg80211_wds_wext_siwap(struct net_device *dev,
1178                                    struct iw_request_info *info,
1179                                    struct sockaddr *addr, char *extra)
1180 {
1181         struct wireless_dev *wdev = dev->ieee80211_ptr;
1182         struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
1183         int err;
1184
1185         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_WDS))
1186                 return -EINVAL;
1187
1188         if (addr->sa_family != ARPHRD_ETHER)
1189                 return -EINVAL;
1190
1191         if (netif_running(dev))
1192                 return -EBUSY;
1193
1194         if (!rdev->ops->set_wds_peer)
1195                 return -EOPNOTSUPP;
1196
1197         err = rdev->ops->set_wds_peer(wdev->wiphy, dev, (u8 *) &addr->sa_data);
1198         if (err)
1199                 return err;
1200
1201         memcpy(&wdev->wext.bssid, (u8 *) &addr->sa_data, ETH_ALEN);
1202
1203         return 0;
1204 }
1205
1206 static int cfg80211_wds_wext_giwap(struct net_device *dev,
1207                                    struct iw_request_info *info,
1208                                    struct sockaddr *addr, char *extra)
1209 {
1210         struct wireless_dev *wdev = dev->ieee80211_ptr;
1211
1212         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_WDS))
1213                 return -EINVAL;
1214
1215         addr->sa_family = ARPHRD_ETHER;
1216         memcpy(&addr->sa_data, wdev->wext.bssid, ETH_ALEN);
1217
1218         return 0;
1219 }
1220
1221 int cfg80211_wext_siwrate(struct net_device *dev,
1222                           struct iw_request_info *info,
1223                           struct iw_param *rate, char *extra)
1224 {
1225         struct wireless_dev *wdev = dev->ieee80211_ptr;
1226         struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
1227         struct cfg80211_bitrate_mask mask;
1228         u32 fixed, maxrate;
1229         struct ieee80211_supported_band *sband;
1230         int band, ridx;
1231         bool match = false;
1232
1233         if (!rdev->ops->set_bitrate_mask)
1234                 return -EOPNOTSUPP;
1235
1236         memset(&mask, 0, sizeof(mask));
1237         fixed = 0;
1238         maxrate = (u32)-1;
1239
1240         if (rate->value < 0) {
1241                 /* nothing */
1242         } else if (rate->fixed) {
1243                 fixed = rate->value / 100000;
1244         } else {
1245                 maxrate = rate->value / 100000;
1246         }
1247
1248         for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
1249                 sband = wdev->wiphy->bands[band];
1250                 if (sband == NULL)
1251                         continue;
1252                 for (ridx = 0; ridx < sband->n_bitrates; ridx++) {
1253                         struct ieee80211_rate *srate = &sband->bitrates[ridx];
1254                         if (fixed == srate->bitrate) {
1255                                 mask.control[band].legacy = 1 << ridx;
1256                                 match = true;
1257                                 break;
1258                         }
1259                         if (srate->bitrate <= maxrate) {
1260                                 mask.control[band].legacy |= 1 << ridx;
1261                                 match = true;
1262                         }
1263                 }
1264         }
1265
1266         if (!match)
1267                 return -EINVAL;
1268
1269         return rdev->ops->set_bitrate_mask(wdev->wiphy, dev, NULL, &mask);
1270 }
1271 EXPORT_SYMBOL_GPL(cfg80211_wext_siwrate);
1272
1273 int cfg80211_wext_giwrate(struct net_device *dev,
1274                           struct iw_request_info *info,
1275                           struct iw_param *rate, char *extra)
1276 {
1277         struct wireless_dev *wdev = dev->ieee80211_ptr;
1278         struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
1279         /* we are under RTNL - globally locked - so can use a static struct */
1280         static struct station_info sinfo;
1281         u8 addr[ETH_ALEN];
1282         int err;
1283
1284         if (wdev->iftype != NL80211_IFTYPE_STATION)
1285                 return -EOPNOTSUPP;
1286
1287         if (!rdev->ops->get_station)
1288                 return -EOPNOTSUPP;
1289
1290         err = 0;
1291         wdev_lock(wdev);
1292         if (wdev->current_bss)
1293                 memcpy(addr, wdev->current_bss->pub.bssid, ETH_ALEN);
1294         else
1295                 err = -EOPNOTSUPP;
1296         wdev_unlock(wdev);
1297         if (err)
1298                 return err;
1299
1300         err = rdev->ops->get_station(&rdev->wiphy, dev, addr, &sinfo);
1301         if (err)
1302                 return err;
1303
1304         if (!(sinfo.filled & STATION_INFO_TX_BITRATE))
1305                 return -EOPNOTSUPP;
1306
1307         rate->value = 100000 * cfg80211_calculate_bitrate(&sinfo.txrate);
1308
1309         return 0;
1310 }
1311 EXPORT_SYMBOL_GPL(cfg80211_wext_giwrate);
1312
1313 /* Get wireless statistics.  Called by /proc/net/wireless and by SIOCGIWSTATS */
1314 struct iw_statistics *cfg80211_wireless_stats(struct net_device *dev)
1315 {
1316         struct wireless_dev *wdev = dev->ieee80211_ptr;
1317         struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
1318         /* we are under RTNL - globally locked - so can use static structs */
1319         static struct iw_statistics wstats;
1320         static struct station_info sinfo;
1321         u8 bssid[ETH_ALEN];
1322
1323         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION)
1324                 return NULL;
1325
1326         if (!rdev->ops->get_station)
1327                 return NULL;
1328
1329         /* Grab BSSID of current BSS, if any */
1330         wdev_lock(wdev);
1331         if (!wdev->current_bss) {
1332                 wdev_unlock(wdev);
1333                 return NULL;
1334         }
1335         memcpy(bssid, wdev->current_bss->pub.bssid, ETH_ALEN);
1336         wdev_unlock(wdev);
1337
1338         if (rdev->ops->get_station(&rdev->wiphy, dev, bssid, &sinfo))
1339                 return NULL;
1340
1341         memset(&wstats, 0, sizeof(wstats));
1342
1343         switch (rdev->wiphy.signal_type) {
1344         case CFG80211_SIGNAL_TYPE_MBM:
1345                 if (sinfo.filled & STATION_INFO_SIGNAL) {
1346                         int sig = sinfo.signal;
1347                         wstats.qual.updated |= IW_QUAL_LEVEL_UPDATED;
1348                         wstats.qual.updated |= IW_QUAL_QUAL_UPDATED;
1349                         wstats.qual.updated |= IW_QUAL_DBM;
1350                         wstats.qual.level = sig;
1351                         if (sig < -110)
1352                                 sig = -110;
1353                         else if (sig > -40)
1354                                 sig = -40;
1355                         wstats.qual.qual = sig + 110;
1356                         break;
1357                 }
1358         case CFG80211_SIGNAL_TYPE_UNSPEC:
1359                 if (sinfo.filled & STATION_INFO_SIGNAL) {
1360                         wstats.qual.updated |= IW_QUAL_LEVEL_UPDATED;
1361                         wstats.qual.updated |= IW_QUAL_QUAL_UPDATED;
1362                         wstats.qual.level = sinfo.signal;
1363                         wstats.qual.qual = sinfo.signal;
1364                         break;
1365                 }
1366         default:
1367                 wstats.qual.updated |= IW_QUAL_LEVEL_INVALID;
1368                 wstats.qual.updated |= IW_QUAL_QUAL_INVALID;
1369         }
1370
1371         wstats.qual.updated |= IW_QUAL_NOISE_INVALID;
1372         if (sinfo.filled & STATION_INFO_RX_DROP_MISC)
1373                 wstats.discard.misc = sinfo.rx_dropped_misc;
1374         if (sinfo.filled & STATION_INFO_TX_FAILED)
1375                 wstats.discard.retries = sinfo.tx_failed;
1376
1377         return &wstats;
1378 }
1379 EXPORT_SYMBOL_GPL(cfg80211_wireless_stats);
1380
1381 int cfg80211_wext_siwap(struct net_device *dev,
1382                         struct iw_request_info *info,
1383                         struct sockaddr *ap_addr, char *extra)
1384 {
1385         struct wireless_dev *wdev = dev->ieee80211_ptr;
1386
1387         switch (wdev->iftype) {
1388         case NL80211_IFTYPE_ADHOC:
1389                 return cfg80211_ibss_wext_siwap(dev, info, ap_addr, extra);
1390         case NL80211_IFTYPE_STATION:
1391                 return cfg80211_mgd_wext_siwap(dev, info, ap_addr, extra);
1392         case NL80211_IFTYPE_WDS:
1393                 return cfg80211_wds_wext_siwap(dev, info, ap_addr, extra);
1394         default:
1395                 return -EOPNOTSUPP;
1396         }
1397 }
1398 EXPORT_SYMBOL_GPL(cfg80211_wext_siwap);
1399
1400 int cfg80211_wext_giwap(struct net_device *dev,
1401                         struct iw_request_info *info,
1402                         struct sockaddr *ap_addr, char *extra)
1403 {
1404         struct wireless_dev *wdev = dev->ieee80211_ptr;
1405
1406         switch (wdev->iftype) {
1407         case NL80211_IFTYPE_ADHOC:
1408                 return cfg80211_ibss_wext_giwap(dev, info, ap_addr, extra);
1409         case NL80211_IFTYPE_STATION:
1410                 return cfg80211_mgd_wext_giwap(dev, info, ap_addr, extra);
1411         case NL80211_IFTYPE_WDS:
1412                 return cfg80211_wds_wext_giwap(dev, info, ap_addr, extra);
1413         default:
1414                 return -EOPNOTSUPP;
1415         }
1416 }
1417 EXPORT_SYMBOL_GPL(cfg80211_wext_giwap);
1418
1419 int cfg80211_wext_siwessid(struct net_device *dev,
1420                            struct iw_request_info *info,
1421                            struct iw_point *data, char *ssid)
1422 {
1423         struct wireless_dev *wdev = dev->ieee80211_ptr;
1424
1425         switch (wdev->iftype) {
1426         case NL80211_IFTYPE_ADHOC:
1427                 return cfg80211_ibss_wext_siwessid(dev, info, data, ssid);
1428         case NL80211_IFTYPE_STATION:
1429                 return cfg80211_mgd_wext_siwessid(dev, info, data, ssid);
1430         default:
1431                 return -EOPNOTSUPP;
1432         }
1433 }
1434 EXPORT_SYMBOL_GPL(cfg80211_wext_siwessid);
1435
1436 int cfg80211_wext_giwessid(struct net_device *dev,
1437                            struct iw_request_info *info,
1438                            struct iw_point *data, char *ssid)
1439 {
1440         struct wireless_dev *wdev = dev->ieee80211_ptr;
1441
1442         data->flags = 0;
1443         data->length = 0;
1444
1445         switch (wdev->iftype) {
1446         case NL80211_IFTYPE_ADHOC:
1447                 return cfg80211_ibss_wext_giwessid(dev, info, data, ssid);
1448         case NL80211_IFTYPE_STATION:
1449                 return cfg80211_mgd_wext_giwessid(dev, info, data, ssid);
1450         default:
1451                 return -EOPNOTSUPP;
1452         }
1453 }
1454 EXPORT_SYMBOL_GPL(cfg80211_wext_giwessid);
1455
1456 int cfg80211_wext_siwpmksa(struct net_device *dev,
1457                            struct iw_request_info *info,
1458                            struct iw_point *data, char *extra)
1459 {
1460         struct wireless_dev *wdev = dev->ieee80211_ptr;
1461         struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
1462         struct cfg80211_pmksa cfg_pmksa;
1463         struct iw_pmksa *pmksa = (struct iw_pmksa *)extra;
1464
1465         memset(&cfg_pmksa, 0, sizeof(struct cfg80211_pmksa));
1466
1467         if (wdev->iftype != NL80211_IFTYPE_STATION)
1468                 return -EINVAL;
1469
1470         cfg_pmksa.bssid = pmksa->bssid.sa_data;
1471         cfg_pmksa.pmkid = pmksa->pmkid;
1472
1473         switch (pmksa->cmd) {
1474         case IW_PMKSA_ADD:
1475                 if (!rdev->ops->set_pmksa)
1476                         return -EOPNOTSUPP;
1477
1478                 return rdev->ops->set_pmksa(&rdev->wiphy, dev, &cfg_pmksa);
1479
1480         case IW_PMKSA_REMOVE:
1481                 if (!rdev->ops->del_pmksa)
1482                         return -EOPNOTSUPP;
1483
1484                 return rdev->ops->del_pmksa(&rdev->wiphy, dev, &cfg_pmksa);
1485
1486         case IW_PMKSA_FLUSH:
1487                 if (!rdev->ops->flush_pmksa)
1488                         return -EOPNOTSUPP;
1489
1490                 return rdev->ops->flush_pmksa(&rdev->wiphy, dev);
1491
1492         default:
1493                 return -EOPNOTSUPP;
1494         }
1495 }
1496 EXPORT_SYMBOL_GPL(cfg80211_wext_siwpmksa);
1497
1498 static const iw_handler cfg80211_handlers[] = {
1499         [IW_IOCTL_IDX(SIOCGIWNAME)]     = (iw_handler) cfg80211_wext_giwname,
1500         [IW_IOCTL_IDX(SIOCSIWFREQ)]     = (iw_handler) cfg80211_wext_siwfreq,
1501         [IW_IOCTL_IDX(SIOCGIWFREQ)]     = (iw_handler) cfg80211_wext_giwfreq,
1502         [IW_IOCTL_IDX(SIOCSIWMODE)]     = (iw_handler) cfg80211_wext_siwmode,
1503         [IW_IOCTL_IDX(SIOCGIWMODE)]     = (iw_handler) cfg80211_wext_giwmode,
1504         [IW_IOCTL_IDX(SIOCGIWRANGE)]    = (iw_handler) cfg80211_wext_giwrange,
1505         [IW_IOCTL_IDX(SIOCSIWAP)]       = (iw_handler) cfg80211_wext_siwap,
1506         [IW_IOCTL_IDX(SIOCGIWAP)]       = (iw_handler) cfg80211_wext_giwap,
1507         [IW_IOCTL_IDX(SIOCSIWMLME)]     = (iw_handler) cfg80211_wext_siwmlme,
1508         [IW_IOCTL_IDX(SIOCSIWSCAN)]     = (iw_handler) cfg80211_wext_siwscan,
1509         [IW_IOCTL_IDX(SIOCGIWSCAN)]     = (iw_handler) cfg80211_wext_giwscan,
1510         [IW_IOCTL_IDX(SIOCSIWESSID)]    = (iw_handler) cfg80211_wext_siwessid,
1511         [IW_IOCTL_IDX(SIOCGIWESSID)]    = (iw_handler) cfg80211_wext_giwessid,
1512         [IW_IOCTL_IDX(SIOCSIWRATE)]     = (iw_handler) cfg80211_wext_siwrate,
1513         [IW_IOCTL_IDX(SIOCGIWRATE)]     = (iw_handler) cfg80211_wext_giwrate,
1514         [IW_IOCTL_IDX(SIOCSIWRTS)]      = (iw_handler) cfg80211_wext_siwrts,
1515         [IW_IOCTL_IDX(SIOCGIWRTS)]      = (iw_handler) cfg80211_wext_giwrts,
1516         [IW_IOCTL_IDX(SIOCSIWFRAG)]     = (iw_handler) cfg80211_wext_siwfrag,
1517         [IW_IOCTL_IDX(SIOCGIWFRAG)]     = (iw_handler) cfg80211_wext_giwfrag,
1518         [IW_IOCTL_IDX(SIOCSIWTXPOW)]    = (iw_handler) cfg80211_wext_siwtxpower,
1519         [IW_IOCTL_IDX(SIOCGIWTXPOW)]    = (iw_handler) cfg80211_wext_giwtxpower,
1520         [IW_IOCTL_IDX(SIOCSIWRETRY)]    = (iw_handler) cfg80211_wext_siwretry,
1521         [IW_IOCTL_IDX(SIOCGIWRETRY)]    = (iw_handler) cfg80211_wext_giwretry,
1522         [IW_IOCTL_IDX(SIOCSIWENCODE)]   = (iw_handler) cfg80211_wext_siwencode,
1523         [IW_IOCTL_IDX(SIOCGIWENCODE)]   = (iw_handler) cfg80211_wext_giwencode,
1524         [IW_IOCTL_IDX(SIOCSIWPOWER)]    = (iw_handler) cfg80211_wext_siwpower,
1525         [IW_IOCTL_IDX(SIOCGIWPOWER)]    = (iw_handler) cfg80211_wext_giwpower,
1526         [IW_IOCTL_IDX(SIOCSIWGENIE)]    = (iw_handler) cfg80211_wext_siwgenie,
1527         [IW_IOCTL_IDX(SIOCSIWAUTH)]     = (iw_handler) cfg80211_wext_siwauth,
1528         [IW_IOCTL_IDX(SIOCGIWAUTH)]     = (iw_handler) cfg80211_wext_giwauth,
1529         [IW_IOCTL_IDX(SIOCSIWENCODEEXT)]= (iw_handler) cfg80211_wext_siwencodeext,
1530         [IW_IOCTL_IDX(SIOCSIWPMKSA)]    = (iw_handler) cfg80211_wext_siwpmksa,
1531 };
1532
1533 const struct iw_handler_def cfg80211_wext_handler = {
1534         .num_standard           = ARRAY_SIZE(cfg80211_handlers),
1535         .standard               = cfg80211_handlers,
1536         .get_wireless_stats = cfg80211_wireless_stats,
1537 };