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wext-compat.c
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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 <[email protected]>
9  */
10 
11 #include <linux/export.h>
12 #include <linux/wireless.h>
13 #include <linux/nl80211.h>
14 #include <linux/if_arp.h>
15 #include <linux/etherdevice.h>
16 #include <linux/slab.h>
17 #include <net/iw_handler.h>
18 #include <net/cfg80211.h>
19 #include <net/cfg80211-wext.h>
20 #include "wext-compat.h"
21 #include "core.h"
22 
23 int cfg80211_wext_giwname(struct net_device *dev,
24  struct iw_request_info *info,
25  char *name, char *extra)
26 {
27  struct wireless_dev *wdev = dev->ieee80211_ptr;
28  struct ieee80211_supported_band *sband;
29  bool is_ht = false, is_a = false, is_b = false, is_g = false;
30 
31  if (!wdev)
32  return -EOPNOTSUPP;
33 
34  sband = wdev->wiphy->bands[IEEE80211_BAND_5GHZ];
35  if (sband) {
36  is_a = true;
37  is_ht |= sband->ht_cap.ht_supported;
38  }
39 
40  sband = wdev->wiphy->bands[IEEE80211_BAND_2GHZ];
41  if (sband) {
42  int i;
43  /* Check for mandatory rates */
44  for (i = 0; i < sband->n_bitrates; i++) {
45  if (sband->bitrates[i].bitrate == 10)
46  is_b = true;
47  if (sband->bitrates[i].bitrate == 60)
48  is_g = true;
49  }
50  is_ht |= sband->ht_cap.ht_supported;
51  }
52 
53  strcpy(name, "IEEE 802.11");
54  if (is_a)
55  strcat(name, "a");
56  if (is_b)
57  strcat(name, "b");
58  if (is_g)
59  strcat(name, "g");
60  if (is_ht)
61  strcat(name, "n");
62 
63  return 0;
64 }
65 EXPORT_SYMBOL_GPL(cfg80211_wext_giwname);
66 
67 int cfg80211_wext_siwmode(struct net_device *dev, struct iw_request_info *info,
68  u32 *mode, char *extra)
69 {
70  struct wireless_dev *wdev = dev->ieee80211_ptr;
71  struct cfg80211_registered_device *rdev;
72  struct vif_params vifparams;
73  enum nl80211_iftype type;
74  int ret;
75 
76  rdev = wiphy_to_dev(wdev->wiphy);
77 
78  switch (*mode) {
79  case IW_MODE_INFRA:
80  type = NL80211_IFTYPE_STATION;
81  break;
82  case IW_MODE_ADHOC:
83  type = NL80211_IFTYPE_ADHOC;
84  break;
85  case IW_MODE_REPEAT:
86  type = NL80211_IFTYPE_WDS;
87  break;
88  case IW_MODE_MONITOR:
89  type = NL80211_IFTYPE_MONITOR;
90  break;
91  default:
92  return -EINVAL;
93  }
94 
95  if (type == wdev->iftype)
96  return 0;
97 
98  memset(&vifparams, 0, sizeof(vifparams));
99 
100  cfg80211_lock_rdev(rdev);
101  ret = cfg80211_change_iface(rdev, dev, type, NULL, &vifparams);
102  cfg80211_unlock_rdev(rdev);
103 
104  return ret;
105 }
106 EXPORT_SYMBOL_GPL(cfg80211_wext_siwmode);
107 
108 int cfg80211_wext_giwmode(struct net_device *dev, struct iw_request_info *info,
109  u32 *mode, char *extra)
110 {
111  struct wireless_dev *wdev = dev->ieee80211_ptr;
112 
113  if (!wdev)
114  return -EOPNOTSUPP;
115 
116  switch (wdev->iftype) {
117  case NL80211_IFTYPE_AP:
118  *mode = IW_MODE_MASTER;
119  break;
120  case NL80211_IFTYPE_STATION:
121  *mode = IW_MODE_INFRA;
122  break;
123  case NL80211_IFTYPE_ADHOC:
124  *mode = IW_MODE_ADHOC;
125  break;
126  case NL80211_IFTYPE_MONITOR:
127  *mode = IW_MODE_MONITOR;
128  break;
129  case NL80211_IFTYPE_WDS:
130  *mode = IW_MODE_REPEAT;
131  break;
132  case NL80211_IFTYPE_AP_VLAN:
133  *mode = IW_MODE_SECOND; /* FIXME */
134  break;
135  default:
136  *mode = IW_MODE_AUTO;
137  break;
138  }
139  return 0;
140 }
141 EXPORT_SYMBOL_GPL(cfg80211_wext_giwmode);
142 
143 
144 int cfg80211_wext_giwrange(struct net_device *dev,
145  struct iw_request_info *info,
146  struct iw_point *data, char *extra)
147 {
148  struct wireless_dev *wdev = dev->ieee80211_ptr;
149  struct iw_range *range = (struct iw_range *) extra;
150  enum ieee80211_band band;
151  int i, c = 0;
152 
153  if (!wdev)
154  return -EOPNOTSUPP;
155 
156  data->length = sizeof(struct iw_range);
157  memset(range, 0, sizeof(struct iw_range));
158 
159  range->we_version_compiled = WIRELESS_EXT;
160  range->we_version_source = 21;
161  range->retry_capa = IW_RETRY_LIMIT;
162  range->retry_flags = IW_RETRY_LIMIT;
163  range->min_retry = 0;
164  range->max_retry = 255;
165  range->min_rts = 0;
166  range->max_rts = 2347;
167  range->min_frag = 256;
168  range->max_frag = 2346;
169 
170  range->max_encoding_tokens = 4;
171 
172  range->max_qual.updated = IW_QUAL_NOISE_INVALID;
173 
174  switch (wdev->wiphy->signal_type) {
175  case CFG80211_SIGNAL_TYPE_NONE:
176  break;
177  case CFG80211_SIGNAL_TYPE_MBM:
178  range->max_qual.level = -110;
179  range->max_qual.qual = 70;
180  range->avg_qual.qual = 35;
181  range->max_qual.updated |= IW_QUAL_DBM;
182  range->max_qual.updated |= IW_QUAL_QUAL_UPDATED;
183  range->max_qual.updated |= IW_QUAL_LEVEL_UPDATED;
184  break;
185  case CFG80211_SIGNAL_TYPE_UNSPEC:
186  range->max_qual.level = 100;
187  range->max_qual.qual = 100;
188  range->avg_qual.qual = 50;
189  range->max_qual.updated |= IW_QUAL_QUAL_UPDATED;
190  range->max_qual.updated |= IW_QUAL_LEVEL_UPDATED;
191  break;
192  }
193 
194  range->avg_qual.level = range->max_qual.level / 2;
195  range->avg_qual.noise = range->max_qual.noise / 2;
196  range->avg_qual.updated = range->max_qual.updated;
197 
198  for (i = 0; i < wdev->wiphy->n_cipher_suites; i++) {
199  switch (wdev->wiphy->cipher_suites[i]) {
200  case WLAN_CIPHER_SUITE_TKIP:
201  range->enc_capa |= (IW_ENC_CAPA_CIPHER_TKIP |
202  IW_ENC_CAPA_WPA);
203  break;
204 
205  case WLAN_CIPHER_SUITE_CCMP:
206  range->enc_capa |= (IW_ENC_CAPA_CIPHER_CCMP |
207  IW_ENC_CAPA_WPA2);
208  break;
209 
210  case WLAN_CIPHER_SUITE_WEP40:
211  range->encoding_size[range->num_encoding_sizes++] =
212  WLAN_KEY_LEN_WEP40;
213  break;
214 
215  case WLAN_CIPHER_SUITE_WEP104:
216  range->encoding_size[range->num_encoding_sizes++] =
217  WLAN_KEY_LEN_WEP104;
218  break;
219  }
220  }
221 
222  for (band = 0; band < IEEE80211_NUM_BANDS; band ++) {
223  struct ieee80211_supported_band *sband;
224 
225  sband = wdev->wiphy->bands[band];
226 
227  if (!sband)
228  continue;
229 
230  for (i = 0; i < sband->n_channels && c < IW_MAX_FREQUENCIES; i++) {
231  struct ieee80211_channel *chan = &sband->channels[i];
232 
233  if (!(chan->flags & IEEE80211_CHAN_DISABLED)) {
234  range->freq[c].i =
235  ieee80211_frequency_to_channel(
236  chan->center_freq);
237  range->freq[c].m = chan->center_freq;
238  range->freq[c].e = 6;
239  c++;
240  }
241  }
242  }
243  range->num_channels = c;
244  range->num_frequency = c;
245 
246  IW_EVENT_CAPA_SET_KERNEL(range->event_capa);
247  IW_EVENT_CAPA_SET(range->event_capa, SIOCGIWAP);
248  IW_EVENT_CAPA_SET(range->event_capa, SIOCGIWSCAN);
249 
250  if (wdev->wiphy->max_scan_ssids > 0)
251  range->scan_capa |= IW_SCAN_CAPA_ESSID;
252 
253  return 0;
254 }
255 EXPORT_SYMBOL_GPL(cfg80211_wext_giwrange);
256 
257 
265 int cfg80211_wext_freq(struct wiphy *wiphy, struct iw_freq *freq)
266 {
267  /*
268  * Parse frequency - return 0 for auto and
269  * -EINVAL for impossible things.
270  */
271  if (freq->e == 0) {
272  enum ieee80211_band band = IEEE80211_BAND_2GHZ;
273  if (freq->m < 0)
274  return 0;
275  if (freq->m > 14)
276  band = IEEE80211_BAND_5GHZ;
277  return ieee80211_channel_to_frequency(freq->m, band);
278  } else {
279  int i, div = 1000000;
280  for (i = 0; i < freq->e; i++)
281  div /= 10;
282  if (div <= 0)
283  return -EINVAL;
284  return freq->m / div;
285  }
286 }
287 
288 int cfg80211_wext_siwrts(struct net_device *dev,
289  struct iw_request_info *info,
290  struct iw_param *rts, char *extra)
291 {
292  struct wireless_dev *wdev = dev->ieee80211_ptr;
293  struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
294  u32 orts = wdev->wiphy->rts_threshold;
295  int err;
296 
297  if (rts->disabled || !rts->fixed)
298  wdev->wiphy->rts_threshold = (u32) -1;
299  else if (rts->value < 0)
300  return -EINVAL;
301  else
302  wdev->wiphy->rts_threshold = rts->value;
303 
304  err = rdev->ops->set_wiphy_params(wdev->wiphy,
305  WIPHY_PARAM_RTS_THRESHOLD);
306  if (err)
307  wdev->wiphy->rts_threshold = orts;
308 
309  return err;
310 }
311 EXPORT_SYMBOL_GPL(cfg80211_wext_siwrts);
312 
313 int cfg80211_wext_giwrts(struct net_device *dev,
314  struct iw_request_info *info,
315  struct iw_param *rts, char *extra)
316 {
317  struct wireless_dev *wdev = dev->ieee80211_ptr;
318 
319  rts->value = wdev->wiphy->rts_threshold;
320  rts->disabled = rts->value == (u32) -1;
321  rts->fixed = 1;
322 
323  return 0;
324 }
325 EXPORT_SYMBOL_GPL(cfg80211_wext_giwrts);
326 
327 int cfg80211_wext_siwfrag(struct net_device *dev,
328  struct iw_request_info *info,
329  struct iw_param *frag, char *extra)
330 {
331  struct wireless_dev *wdev = dev->ieee80211_ptr;
332  struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
333  u32 ofrag = wdev->wiphy->frag_threshold;
334  int err;
335 
336  if (frag->disabled || !frag->fixed)
337  wdev->wiphy->frag_threshold = (u32) -1;
338  else if (frag->value < 256)
339  return -EINVAL;
340  else {
341  /* Fragment length must be even, so strip LSB. */
342  wdev->wiphy->frag_threshold = frag->value & ~0x1;
343  }
344 
345  err = rdev->ops->set_wiphy_params(wdev->wiphy,
346  WIPHY_PARAM_FRAG_THRESHOLD);
347  if (err)
348  wdev->wiphy->frag_threshold = ofrag;
349 
350  return err;
351 }
352 EXPORT_SYMBOL_GPL(cfg80211_wext_siwfrag);
353 
354 int cfg80211_wext_giwfrag(struct net_device *dev,
355  struct iw_request_info *info,
356  struct iw_param *frag, char *extra)
357 {
358  struct wireless_dev *wdev = dev->ieee80211_ptr;
359 
360  frag->value = wdev->wiphy->frag_threshold;
361  frag->disabled = frag->value == (u32) -1;
362  frag->fixed = 1;
363 
364  return 0;
365 }
366 EXPORT_SYMBOL_GPL(cfg80211_wext_giwfrag);
367 
368 static int cfg80211_wext_siwretry(struct net_device *dev,
369  struct iw_request_info *info,
370  struct iw_param *retry, char *extra)
371 {
372  struct wireless_dev *wdev = dev->ieee80211_ptr;
373  struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
374  u32 changed = 0;
375  u8 olong = wdev->wiphy->retry_long;
376  u8 oshort = wdev->wiphy->retry_short;
377  int err;
378 
379  if (retry->disabled ||
380  (retry->flags & IW_RETRY_TYPE) != IW_RETRY_LIMIT)
381  return -EINVAL;
382 
383  if (retry->flags & IW_RETRY_LONG) {
384  wdev->wiphy->retry_long = retry->value;
385  changed |= WIPHY_PARAM_RETRY_LONG;
386  } else if (retry->flags & IW_RETRY_SHORT) {
387  wdev->wiphy->retry_short = retry->value;
388  changed |= WIPHY_PARAM_RETRY_SHORT;
389  } else {
390  wdev->wiphy->retry_short = retry->value;
391  wdev->wiphy->retry_long = retry->value;
392  changed |= WIPHY_PARAM_RETRY_LONG;
393  changed |= WIPHY_PARAM_RETRY_SHORT;
394  }
395 
396  if (!changed)
397  return 0;
398 
399  err = rdev->ops->set_wiphy_params(wdev->wiphy, changed);
400  if (err) {
401  wdev->wiphy->retry_short = oshort;
402  wdev->wiphy->retry_long = olong;
403  }
404 
405  return err;
406 }
407 
408 int cfg80211_wext_giwretry(struct net_device *dev,
409  struct iw_request_info *info,
410  struct iw_param *retry, char *extra)
411 {
412  struct wireless_dev *wdev = dev->ieee80211_ptr;
413 
414  retry->disabled = 0;
415 
416  if (retry->flags == 0 || (retry->flags & IW_RETRY_SHORT)) {
417  /*
418  * First return short value, iwconfig will ask long value
419  * later if needed
420  */
421  retry->flags |= IW_RETRY_LIMIT;
422  retry->value = wdev->wiphy->retry_short;
423  if (wdev->wiphy->retry_long != wdev->wiphy->retry_short)
424  retry->flags |= IW_RETRY_LONG;
425 
426  return 0;
427  }
428 
429  if (retry->flags & IW_RETRY_LONG) {
430  retry->flags = IW_RETRY_LIMIT | IW_RETRY_LONG;
431  retry->value = wdev->wiphy->retry_long;
432  }
433 
434  return 0;
435 }
436 EXPORT_SYMBOL_GPL(cfg80211_wext_giwretry);
437 
438 static int __cfg80211_set_encryption(struct cfg80211_registered_device *rdev,
439  struct net_device *dev, bool pairwise,
440  const u8 *addr, bool remove, bool tx_key,
441  int idx, struct key_params *params)
442 {
443  struct wireless_dev *wdev = dev->ieee80211_ptr;
444  int err, i;
445  bool rejoin = false;
446 
447  if (pairwise && !addr)
448  return -EINVAL;
449 
450  if (!wdev->wext.keys) {
451  wdev->wext.keys = kzalloc(sizeof(*wdev->wext.keys),
452  GFP_KERNEL);
453  if (!wdev->wext.keys)
454  return -ENOMEM;
455  for (i = 0; i < 6; i++)
456  wdev->wext.keys->params[i].key =
457  wdev->wext.keys->data[i];
458  }
459 
460  if (wdev->iftype != NL80211_IFTYPE_ADHOC &&
461  wdev->iftype != NL80211_IFTYPE_STATION)
462  return -EOPNOTSUPP;
463 
464  if (params->cipher == WLAN_CIPHER_SUITE_AES_CMAC) {
465  if (!wdev->current_bss)
466  return -ENOLINK;
467 
468  if (!rdev->ops->set_default_mgmt_key)
469  return -EOPNOTSUPP;
470 
471  if (idx < 4 || idx > 5)
472  return -EINVAL;
473  } else if (idx < 0 || idx > 3)
474  return -EINVAL;
475 
476  if (remove) {
477  err = 0;
478  if (wdev->current_bss) {
479  /*
480  * If removing the current TX key, we will need to
481  * join a new IBSS without the privacy bit clear.
482  */
483  if (idx == wdev->wext.default_key &&
484  wdev->iftype == NL80211_IFTYPE_ADHOC) {
485  __cfg80211_leave_ibss(rdev, wdev->netdev, true);
486  rejoin = true;
487  }
488 
489  if (!pairwise && addr &&
490  !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
491  err = -ENOENT;
492  else
493  err = rdev->ops->del_key(&rdev->wiphy, dev, idx,
494  pairwise, addr);
495  }
496  wdev->wext.connect.privacy = false;
497  /*
498  * Applications using wireless extensions expect to be
499  * able to delete keys that don't exist, so allow that.
500  */
501  if (err == -ENOENT)
502  err = 0;
503  if (!err) {
504  if (!addr) {
505  wdev->wext.keys->params[idx].key_len = 0;
506  wdev->wext.keys->params[idx].cipher = 0;
507  }
508  if (idx == wdev->wext.default_key)
509  wdev->wext.default_key = -1;
510  else if (idx == wdev->wext.default_mgmt_key)
511  wdev->wext.default_mgmt_key = -1;
512  }
513 
514  if (!err && rejoin)
515  err = cfg80211_ibss_wext_join(rdev, wdev);
516 
517  return err;
518  }
519 
520  if (addr)
521  tx_key = false;
522 
523  if (cfg80211_validate_key_settings(rdev, params, idx, pairwise, addr))
524  return -EINVAL;
525 
526  err = 0;
527  if (wdev->current_bss)
528  err = rdev->ops->add_key(&rdev->wiphy, dev, idx,
529  pairwise, addr, params);
530  if (err)
531  return err;
532 
533  if (!addr) {
534  wdev->wext.keys->params[idx] = *params;
535  memcpy(wdev->wext.keys->data[idx],
536  params->key, params->key_len);
537  wdev->wext.keys->params[idx].key =
538  wdev->wext.keys->data[idx];
539  }
540 
541  if ((params->cipher == WLAN_CIPHER_SUITE_WEP40 ||
542  params->cipher == WLAN_CIPHER_SUITE_WEP104) &&
543  (tx_key || (!addr && wdev->wext.default_key == -1))) {
544  if (wdev->current_bss) {
545  /*
546  * If we are getting a new TX key from not having
547  * had one before we need to join a new IBSS with
548  * the privacy bit set.
549  */
550  if (wdev->iftype == NL80211_IFTYPE_ADHOC &&
551  wdev->wext.default_key == -1) {
552  __cfg80211_leave_ibss(rdev, wdev->netdev, true);
553  rejoin = true;
554  }
555  err = rdev->ops->set_default_key(&rdev->wiphy, dev,
556  idx, true, true);
557  }
558  if (!err) {
559  wdev->wext.default_key = idx;
560  if (rejoin)
561  err = cfg80211_ibss_wext_join(rdev, wdev);
562  }
563  return err;
564  }
565 
566  if (params->cipher == WLAN_CIPHER_SUITE_AES_CMAC &&
567  (tx_key || (!addr && wdev->wext.default_mgmt_key == -1))) {
568  if (wdev->current_bss)
569  err = rdev->ops->set_default_mgmt_key(&rdev->wiphy,
570  dev, idx);
571  if (!err)
572  wdev->wext.default_mgmt_key = idx;
573  return err;
574  }
575 
576  return 0;
577 }
578 
579 static int cfg80211_set_encryption(struct cfg80211_registered_device *rdev,
580  struct net_device *dev, bool pairwise,
581  const u8 *addr, bool remove, bool tx_key,
582  int idx, struct key_params *params)
583 {
584  int err;
585 
586  /* devlist mutex needed for possible IBSS re-join */
587  mutex_lock(&rdev->devlist_mtx);
588  wdev_lock(dev->ieee80211_ptr);
589  err = __cfg80211_set_encryption(rdev, dev, pairwise, addr,
590  remove, tx_key, idx, params);
591  wdev_unlock(dev->ieee80211_ptr);
592  mutex_unlock(&rdev->devlist_mtx);
593 
594  return err;
595 }
596 
597 static int cfg80211_wext_siwencode(struct net_device *dev,
598  struct iw_request_info *info,
599  struct iw_point *erq, char *keybuf)
600 {
601  struct wireless_dev *wdev = dev->ieee80211_ptr;
602  struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
603  int idx, err;
604  bool remove = false;
605  struct key_params params;
606 
607  if (wdev->iftype != NL80211_IFTYPE_STATION &&
608  wdev->iftype != NL80211_IFTYPE_ADHOC)
609  return -EOPNOTSUPP;
610 
611  /* no use -- only MFP (set_default_mgmt_key) is optional */
612  if (!rdev->ops->del_key ||
613  !rdev->ops->add_key ||
614  !rdev->ops->set_default_key)
615  return -EOPNOTSUPP;
616 
617  idx = erq->flags & IW_ENCODE_INDEX;
618  if (idx == 0) {
619  idx = wdev->wext.default_key;
620  if (idx < 0)
621  idx = 0;
622  } else if (idx < 1 || idx > 4)
623  return -EINVAL;
624  else
625  idx--;
626 
627  if (erq->flags & IW_ENCODE_DISABLED)
628  remove = true;
629  else if (erq->length == 0) {
630  /* No key data - just set the default TX key index */
631  err = 0;
632  wdev_lock(wdev);
633  if (wdev->current_bss)
634  err = rdev->ops->set_default_key(&rdev->wiphy, dev,
635  idx, true, true);
636  if (!err)
637  wdev->wext.default_key = idx;
638  wdev_unlock(wdev);
639  return err;
640  }
641 
642  memset(&params, 0, sizeof(params));
643  params.key = keybuf;
644  params.key_len = erq->length;
645  if (erq->length == 5)
646  params.cipher = WLAN_CIPHER_SUITE_WEP40;
647  else if (erq->length == 13)
648  params.cipher = WLAN_CIPHER_SUITE_WEP104;
649  else if (!remove)
650  return -EINVAL;
651 
652  return cfg80211_set_encryption(rdev, dev, false, NULL, remove,
653  wdev->wext.default_key == -1,
654  idx, &params);
655 }
656 
657 static 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 
748 static int cfg80211_wext_giwencode(struct net_device *dev,
749  struct iw_request_info *info,
750  struct iw_point *erq, char *keybuf)
751 {
752  struct wireless_dev *wdev = dev->ieee80211_ptr;
753  int idx;
754 
755  if (wdev->iftype != NL80211_IFTYPE_STATION &&
756  wdev->iftype != NL80211_IFTYPE_ADHOC)
757  return -EOPNOTSUPP;
758 
759  idx = erq->flags & IW_ENCODE_INDEX;
760  if (idx == 0) {
761  idx = wdev->wext.default_key;
762  if (idx < 0)
763  idx = 0;
764  } else if (idx < 1 || idx > 4)
765  return -EINVAL;
766  else
767  idx--;
768 
769  erq->flags = idx + 1;
770 
771  if (!wdev->wext.keys || !wdev->wext.keys->params[idx].cipher) {
772  erq->flags |= IW_ENCODE_DISABLED;
773  erq->length = 0;
774  return 0;
775  }
776 
777  erq->length = min_t(size_t, erq->length,
778  wdev->wext.keys->params[idx].key_len);
779  memcpy(keybuf, wdev->wext.keys->params[idx].key, erq->length);
780  erq->flags |= IW_ENCODE_ENABLED;
781 
782  return 0;
783 }
784 
785 static int cfg80211_wext_siwfreq(struct net_device *dev,
786  struct iw_request_info *info,
787  struct iw_freq *wextfreq, char *extra)
788 {
789  struct wireless_dev *wdev = dev->ieee80211_ptr;
790  struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
791  int freq, err;
792 
793  switch (wdev->iftype) {
794  case NL80211_IFTYPE_STATION:
795  return cfg80211_mgd_wext_siwfreq(dev, info, wextfreq, extra);
796  case NL80211_IFTYPE_ADHOC:
797  return cfg80211_ibss_wext_siwfreq(dev, info, wextfreq, extra);
798  case NL80211_IFTYPE_MONITOR:
799  freq = cfg80211_wext_freq(wdev->wiphy, wextfreq);
800  if (freq < 0)
801  return freq;
802  if (freq == 0)
803  return -EINVAL;
804  mutex_lock(&rdev->devlist_mtx);
805  err = cfg80211_set_monitor_channel(rdev, freq, NL80211_CHAN_NO_HT);
806  mutex_unlock(&rdev->devlist_mtx);
807  return err;
808  case NL80211_IFTYPE_MESH_POINT:
809  freq = cfg80211_wext_freq(wdev->wiphy, wextfreq);
810  if (freq < 0)
811  return freq;
812  if (freq == 0)
813  return -EINVAL;
814  mutex_lock(&rdev->devlist_mtx);
815  err = cfg80211_set_mesh_freq(rdev, wdev, freq,
816  NL80211_CHAN_NO_HT);
817  mutex_unlock(&rdev->devlist_mtx);
818  return err;
819  default:
820  return -EOPNOTSUPP;
821  }
822 }
823 
824 static int cfg80211_wext_giwfreq(struct net_device *dev,
825  struct iw_request_info *info,
826  struct iw_freq *freq, char *extra)
827 {
828  struct wireless_dev *wdev = dev->ieee80211_ptr;
829  struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
830  struct ieee80211_channel *chan;
831  enum nl80211_channel_type channel_type;
832 
833  switch (wdev->iftype) {
834  case NL80211_IFTYPE_STATION:
835  return cfg80211_mgd_wext_giwfreq(dev, info, freq, extra);
836  case NL80211_IFTYPE_ADHOC:
837  return cfg80211_ibss_wext_giwfreq(dev, info, freq, extra);
838  case NL80211_IFTYPE_MONITOR:
839  if (!rdev->ops->get_channel)
840  return -EINVAL;
841 
842  chan = rdev->ops->get_channel(wdev->wiphy, wdev, &channel_type);
843  if (!chan)
844  return -EINVAL;
845  freq->m = chan->center_freq;
846  freq->e = 6;
847  return 0;
848  default:
849  return -EINVAL;
850  }
851 }
852 
853 static int cfg80211_wext_siwtxpower(struct net_device *dev,
854  struct iw_request_info *info,
855  union iwreq_data *data, char *extra)
856 {
857  struct wireless_dev *wdev = dev->ieee80211_ptr;
858  struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
859  enum nl80211_tx_power_setting type;
860  int dbm = 0;
861 
862  if ((data->txpower.flags & IW_TXPOW_TYPE) != IW_TXPOW_DBM)
863  return -EINVAL;
864  if (data->txpower.flags & IW_TXPOW_RANGE)
865  return -EINVAL;
866 
867  if (!rdev->ops->set_tx_power)
868  return -EOPNOTSUPP;
869 
870  /* only change when not disabling */
871  if (!data->txpower.disabled) {
872  rfkill_set_sw_state(rdev->rfkill, false);
873 
874  if (data->txpower.fixed) {
875  /*
876  * wext doesn't support negative values, see
877  * below where it's for automatic
878  */
879  if (data->txpower.value < 0)
880  return -EINVAL;
881  dbm = data->txpower.value;
882  type = NL80211_TX_POWER_FIXED;
883  /* TODO: do regulatory check! */
884  } else {
885  /*
886  * Automatic power level setting, max being the value
887  * passed in from userland.
888  */
889  if (data->txpower.value < 0) {
890  type = NL80211_TX_POWER_AUTOMATIC;
891  } else {
892  dbm = data->txpower.value;
893  type = NL80211_TX_POWER_LIMITED;
894  }
895  }
896  } else {
897  rfkill_set_sw_state(rdev->rfkill, true);
898  schedule_work(&rdev->rfkill_sync);
899  return 0;
900  }
901 
902  return rdev->ops->set_tx_power(wdev->wiphy, type, DBM_TO_MBM(dbm));
903 }
904 
905 static int cfg80211_wext_giwtxpower(struct net_device *dev,
906  struct iw_request_info *info,
907  union iwreq_data *data, char *extra)
908 {
909  struct wireless_dev *wdev = dev->ieee80211_ptr;
910  struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
911  int err, val;
912 
913  if ((data->txpower.flags & IW_TXPOW_TYPE) != IW_TXPOW_DBM)
914  return -EINVAL;
915  if (data->txpower.flags & IW_TXPOW_RANGE)
916  return -EINVAL;
917 
918  if (!rdev->ops->get_tx_power)
919  return -EOPNOTSUPP;
920 
921  err = rdev->ops->get_tx_power(wdev->wiphy, &val);
922  if (err)
923  return err;
924 
925  /* well... oh well */
926  data->txpower.fixed = 1;
927  data->txpower.disabled = rfkill_blocked(rdev->rfkill);
928  data->txpower.value = val;
929  data->txpower.flags = IW_TXPOW_DBM;
930 
931  return 0;
932 }
933 
934 static int cfg80211_set_auth_alg(struct wireless_dev *wdev,
935  s32 auth_alg)
936 {
937  int nr_alg = 0;
938 
939  if (!auth_alg)
940  return -EINVAL;
941 
942  if (auth_alg & ~(IW_AUTH_ALG_OPEN_SYSTEM |
943  IW_AUTH_ALG_SHARED_KEY |
944  IW_AUTH_ALG_LEAP))
945  return -EINVAL;
946 
947  if (auth_alg & IW_AUTH_ALG_OPEN_SYSTEM) {
948  nr_alg++;
949  wdev->wext.connect.auth_type = NL80211_AUTHTYPE_OPEN_SYSTEM;
950  }
951 
952  if (auth_alg & IW_AUTH_ALG_SHARED_KEY) {
953  nr_alg++;
954  wdev->wext.connect.auth_type = NL80211_AUTHTYPE_SHARED_KEY;
955  }
956 
957  if (auth_alg & IW_AUTH_ALG_LEAP) {
958  nr_alg++;
959  wdev->wext.connect.auth_type = NL80211_AUTHTYPE_NETWORK_EAP;
960  }
961 
962  if (nr_alg > 1)
963  wdev->wext.connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
964 
965  return 0;
966 }
967 
968 static int cfg80211_set_wpa_version(struct wireless_dev *wdev, u32 wpa_versions)
969 {
970  if (wpa_versions & ~(IW_AUTH_WPA_VERSION_WPA |
971  IW_AUTH_WPA_VERSION_WPA2|
972  IW_AUTH_WPA_VERSION_DISABLED))
973  return -EINVAL;
974 
975  if ((wpa_versions & IW_AUTH_WPA_VERSION_DISABLED) &&
976  (wpa_versions & (IW_AUTH_WPA_VERSION_WPA|
977  IW_AUTH_WPA_VERSION_WPA2)))
978  return -EINVAL;
979 
980  if (wpa_versions & IW_AUTH_WPA_VERSION_DISABLED)
981  wdev->wext.connect.crypto.wpa_versions &=
982  ~(NL80211_WPA_VERSION_1|NL80211_WPA_VERSION_2);
983 
984  if (wpa_versions & IW_AUTH_WPA_VERSION_WPA)
985  wdev->wext.connect.crypto.wpa_versions |=
986  NL80211_WPA_VERSION_1;
987 
988  if (wpa_versions & IW_AUTH_WPA_VERSION_WPA2)
989  wdev->wext.connect.crypto.wpa_versions |=
990  NL80211_WPA_VERSION_2;
991 
992  return 0;
993 }
994 
995 static int cfg80211_set_cipher_group(struct wireless_dev *wdev, u32 cipher)
996 {
997  if (cipher & IW_AUTH_CIPHER_WEP40)
998  wdev->wext.connect.crypto.cipher_group =
999  WLAN_CIPHER_SUITE_WEP40;
1000  else if (cipher & IW_AUTH_CIPHER_WEP104)
1001  wdev->wext.connect.crypto.cipher_group =
1002  WLAN_CIPHER_SUITE_WEP104;
1003  else if (cipher & IW_AUTH_CIPHER_TKIP)
1004  wdev->wext.connect.crypto.cipher_group =
1005  WLAN_CIPHER_SUITE_TKIP;
1006  else if (cipher & IW_AUTH_CIPHER_CCMP)
1007  wdev->wext.connect.crypto.cipher_group =
1008  WLAN_CIPHER_SUITE_CCMP;
1009  else if (cipher & IW_AUTH_CIPHER_AES_CMAC)
1010  wdev->wext.connect.crypto.cipher_group =
1011  WLAN_CIPHER_SUITE_AES_CMAC;
1012  else if (cipher & IW_AUTH_CIPHER_NONE)
1013  wdev->wext.connect.crypto.cipher_group = 0;
1014  else
1015  return -EINVAL;
1016 
1017  return 0;
1018 }
1019 
1020 static int cfg80211_set_cipher_pairwise(struct wireless_dev *wdev, u32 cipher)
1021 {
1022  int nr_ciphers = 0;
1023  u32 *ciphers_pairwise = wdev->wext.connect.crypto.ciphers_pairwise;
1024 
1025  if (cipher & IW_AUTH_CIPHER_WEP40) {
1026  ciphers_pairwise[nr_ciphers] = WLAN_CIPHER_SUITE_WEP40;
1027  nr_ciphers++;
1028  }
1029 
1030  if (cipher & IW_AUTH_CIPHER_WEP104) {
1031  ciphers_pairwise[nr_ciphers] = WLAN_CIPHER_SUITE_WEP104;
1032  nr_ciphers++;
1033  }
1034 
1035  if (cipher & IW_AUTH_CIPHER_TKIP) {
1036  ciphers_pairwise[nr_ciphers] = WLAN_CIPHER_SUITE_TKIP;
1037  nr_ciphers++;
1038  }
1039 
1040  if (cipher & IW_AUTH_CIPHER_CCMP) {
1041  ciphers_pairwise[nr_ciphers] = WLAN_CIPHER_SUITE_CCMP;
1042  nr_ciphers++;
1043  }
1044 
1045  if (cipher & IW_AUTH_CIPHER_AES_CMAC) {
1046  ciphers_pairwise[nr_ciphers] = WLAN_CIPHER_SUITE_AES_CMAC;
1047  nr_ciphers++;
1048  }
1049 
1050  BUILD_BUG_ON(NL80211_MAX_NR_CIPHER_SUITES < 5);
1051 
1052  wdev->wext.connect.crypto.n_ciphers_pairwise = nr_ciphers;
1053 
1054  return 0;
1055 }
1056 
1057 
1058 static int cfg80211_set_key_mgt(struct wireless_dev *wdev, u32 key_mgt)
1059 {
1060  int nr_akm_suites = 0;
1061 
1062  if (key_mgt & ~(IW_AUTH_KEY_MGMT_802_1X |
1063  IW_AUTH_KEY_MGMT_PSK))
1064  return -EINVAL;
1065 
1066  if (key_mgt & IW_AUTH_KEY_MGMT_802_1X) {
1067  wdev->wext.connect.crypto.akm_suites[nr_akm_suites] =
1068  WLAN_AKM_SUITE_8021X;
1069  nr_akm_suites++;
1070  }
1071 
1072  if (key_mgt & IW_AUTH_KEY_MGMT_PSK) {
1073  wdev->wext.connect.crypto.akm_suites[nr_akm_suites] =
1074  WLAN_AKM_SUITE_PSK;
1075  nr_akm_suites++;
1076  }
1077 
1078  wdev->wext.connect.crypto.n_akm_suites = nr_akm_suites;
1079 
1080  return 0;
1081 }
1082 
1083 static int cfg80211_wext_siwauth(struct net_device *dev,
1084  struct iw_request_info *info,
1085  struct iw_param *data, char *extra)
1086 {
1087  struct wireless_dev *wdev = dev->ieee80211_ptr;
1088 
1089  if (wdev->iftype != NL80211_IFTYPE_STATION)
1090  return -EOPNOTSUPP;
1091 
1092  switch (data->flags & IW_AUTH_INDEX) {
1093  case IW_AUTH_PRIVACY_INVOKED:
1094  wdev->wext.connect.privacy = data->value;
1095  return 0;
1096  case IW_AUTH_WPA_VERSION:
1097  return cfg80211_set_wpa_version(wdev, data->value);
1098  case IW_AUTH_CIPHER_GROUP:
1099  return cfg80211_set_cipher_group(wdev, data->value);
1100  case IW_AUTH_KEY_MGMT:
1101  return cfg80211_set_key_mgt(wdev, data->value);
1102  case IW_AUTH_CIPHER_PAIRWISE:
1103  return cfg80211_set_cipher_pairwise(wdev, data->value);
1104  case IW_AUTH_80211_AUTH_ALG:
1105  return cfg80211_set_auth_alg(wdev, data->value);
1106  case IW_AUTH_WPA_ENABLED:
1107  case IW_AUTH_RX_UNENCRYPTED_EAPOL:
1108  case IW_AUTH_DROP_UNENCRYPTED:
1109  case IW_AUTH_MFP:
1110  return 0;
1111  default:
1112  return -EOPNOTSUPP;
1113  }
1114 }
1115 
1116 static int cfg80211_wext_giwauth(struct net_device *dev,
1117  struct iw_request_info *info,
1118  struct iw_param *data, char *extra)
1119 {
1120  /* XXX: what do we need? */
1121 
1122  return -EOPNOTSUPP;
1123 }
1124 
1125 static int cfg80211_wext_siwpower(struct net_device *dev,
1126  struct iw_request_info *info,
1127  struct iw_param *wrq, char *extra)
1128 {
1129  struct wireless_dev *wdev = dev->ieee80211_ptr;
1130  struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
1131  bool ps = wdev->ps;
1132  int timeout = wdev->ps_timeout;
1133  int err;
1134 
1135  if (wdev->iftype != NL80211_IFTYPE_STATION)
1136  return -EINVAL;
1137 
1138  if (!rdev->ops->set_power_mgmt)
1139  return -EOPNOTSUPP;
1140 
1141  if (wrq->disabled) {
1142  ps = false;
1143  } else {
1144  switch (wrq->flags & IW_POWER_MODE) {
1145  case IW_POWER_ON: /* If not specified */
1146  case IW_POWER_MODE: /* If set all mask */
1147  case IW_POWER_ALL_R: /* If explicitely state all */
1148  ps = true;
1149  break;
1150  default: /* Otherwise we ignore */
1151  return -EINVAL;
1152  }
1153 
1154  if (wrq->flags & ~(IW_POWER_MODE | IW_POWER_TIMEOUT))
1155  return -EINVAL;
1156 
1157  if (wrq->flags & IW_POWER_TIMEOUT)
1158  timeout = wrq->value / 1000;
1159  }
1160 
1161  err = rdev->ops->set_power_mgmt(wdev->wiphy, dev, ps, timeout);
1162  if (err)
1163  return err;
1164 
1165  wdev->ps = ps;
1166  wdev->ps_timeout = timeout;
1167 
1168  return 0;
1169 
1170 }
1171 
1172 static int cfg80211_wext_giwpower(struct net_device *dev,
1173  struct iw_request_info *info,
1174  struct iw_param *wrq, char *extra)
1175 {
1176  struct wireless_dev *wdev = dev->ieee80211_ptr;
1177 
1178  wrq->disabled = !wdev->ps;
1179 
1180  return 0;
1181 }
1182 
1183 static int cfg80211_wds_wext_siwap(struct net_device *dev,
1184  struct iw_request_info *info,
1185  struct sockaddr *addr, char *extra)
1186 {
1187  struct wireless_dev *wdev = dev->ieee80211_ptr;
1188  struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
1189  int err;
1190 
1191  if (WARN_ON(wdev->iftype != NL80211_IFTYPE_WDS))
1192  return -EINVAL;
1193 
1194  if (addr->sa_family != ARPHRD_ETHER)
1195  return -EINVAL;
1196 
1197  if (netif_running(dev))
1198  return -EBUSY;
1199 
1200  if (!rdev->ops->set_wds_peer)
1201  return -EOPNOTSUPP;
1202 
1203  err = rdev->ops->set_wds_peer(wdev->wiphy, dev, (u8 *) &addr->sa_data);
1204  if (err)
1205  return err;
1206 
1207  memcpy(&wdev->wext.bssid, (u8 *) &addr->sa_data, ETH_ALEN);
1208 
1209  return 0;
1210 }
1211 
1212 static int cfg80211_wds_wext_giwap(struct net_device *dev,
1213  struct iw_request_info *info,
1214  struct sockaddr *addr, char *extra)
1215 {
1216  struct wireless_dev *wdev = dev->ieee80211_ptr;
1217 
1218  if (WARN_ON(wdev->iftype != NL80211_IFTYPE_WDS))
1219  return -EINVAL;
1220 
1221  addr->sa_family = ARPHRD_ETHER;
1222  memcpy(&addr->sa_data, wdev->wext.bssid, ETH_ALEN);
1223 
1224  return 0;
1225 }
1226 
1227 static int cfg80211_wext_siwrate(struct net_device *dev,
1228  struct iw_request_info *info,
1229  struct iw_param *rate, char *extra)
1230 {
1231  struct wireless_dev *wdev = dev->ieee80211_ptr;
1232  struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
1233  struct cfg80211_bitrate_mask mask;
1234  u32 fixed, maxrate;
1235  struct ieee80211_supported_band *sband;
1236  int band, ridx;
1237  bool match = false;
1238 
1239  if (!rdev->ops->set_bitrate_mask)
1240  return -EOPNOTSUPP;
1241 
1242  memset(&mask, 0, sizeof(mask));
1243  fixed = 0;
1244  maxrate = (u32)-1;
1245 
1246  if (rate->value < 0) {
1247  /* nothing */
1248  } else if (rate->fixed) {
1249  fixed = rate->value / 100000;
1250  } else {
1251  maxrate = rate->value / 100000;
1252  }
1253 
1254  for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
1255  sband = wdev->wiphy->bands[band];
1256  if (sband == NULL)
1257  continue;
1258  for (ridx = 0; ridx < sband->n_bitrates; ridx++) {
1259  struct ieee80211_rate *srate = &sband->bitrates[ridx];
1260  if (fixed == srate->bitrate) {
1261  mask.control[band].legacy = 1 << ridx;
1262  match = true;
1263  break;
1264  }
1265  if (srate->bitrate <= maxrate) {
1266  mask.control[band].legacy |= 1 << ridx;
1267  match = true;
1268  }
1269  }
1270  }
1271 
1272  if (!match)
1273  return -EINVAL;
1274 
1275  return rdev->ops->set_bitrate_mask(wdev->wiphy, dev, NULL, &mask);
1276 }
1277 
1278 static int cfg80211_wext_giwrate(struct net_device *dev,
1279  struct iw_request_info *info,
1280  struct iw_param *rate, char *extra)
1281 {
1282  struct wireless_dev *wdev = dev->ieee80211_ptr;
1283  struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
1284  /* we are under RTNL - globally locked - so can use a static struct */
1285  static struct station_info sinfo;
1286  u8 addr[ETH_ALEN];
1287  int err;
1288 
1289  if (wdev->iftype != NL80211_IFTYPE_STATION)
1290  return -EOPNOTSUPP;
1291 
1292  if (!rdev->ops->get_station)
1293  return -EOPNOTSUPP;
1294 
1295  err = 0;
1296  wdev_lock(wdev);
1297  if (wdev->current_bss)
1298  memcpy(addr, wdev->current_bss->pub.bssid, ETH_ALEN);
1299  else
1300  err = -EOPNOTSUPP;
1301  wdev_unlock(wdev);
1302  if (err)
1303  return err;
1304 
1305  err = rdev->ops->get_station(&rdev->wiphy, dev, addr, &sinfo);
1306  if (err)
1307  return err;
1308 
1309  if (!(sinfo.filled & STATION_INFO_TX_BITRATE))
1310  return -EOPNOTSUPP;
1311 
1312  rate->value = 100000 * cfg80211_calculate_bitrate(&sinfo.txrate);
1313 
1314  return 0;
1315 }
1316 
1317 /* Get wireless statistics. Called by /proc/net/wireless and by SIOCGIWSTATS */
1318 static struct iw_statistics *cfg80211_wireless_stats(struct net_device *dev)
1319 {
1320  struct wireless_dev *wdev = dev->ieee80211_ptr;
1321  struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
1322  /* we are under RTNL - globally locked - so can use static structs */
1323  static struct iw_statistics wstats;
1324  static struct station_info sinfo;
1325  u8 bssid[ETH_ALEN];
1326 
1327  if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION)
1328  return NULL;
1329 
1330  if (!rdev->ops->get_station)
1331  return NULL;
1332 
1333  /* Grab BSSID of current BSS, if any */
1334  wdev_lock(wdev);
1335  if (!wdev->current_bss) {
1336  wdev_unlock(wdev);
1337  return NULL;
1338  }
1339  memcpy(bssid, wdev->current_bss->pub.bssid, ETH_ALEN);
1340  wdev_unlock(wdev);
1341 
1342  if (rdev->ops->get_station(&rdev->wiphy, dev, bssid, &sinfo))
1343  return NULL;
1344 
1345  memset(&wstats, 0, sizeof(wstats));
1346 
1347  switch (rdev->wiphy.signal_type) {
1348  case CFG80211_SIGNAL_TYPE_MBM:
1349  if (sinfo.filled & STATION_INFO_SIGNAL) {
1350  int sig = sinfo.signal;
1351  wstats.qual.updated |= IW_QUAL_LEVEL_UPDATED;
1352  wstats.qual.updated |= IW_QUAL_QUAL_UPDATED;
1353  wstats.qual.updated |= IW_QUAL_DBM;
1354  wstats.qual.level = sig;
1355  if (sig < -110)
1356  sig = -110;
1357  else if (sig > -40)
1358  sig = -40;
1359  wstats.qual.qual = sig + 110;
1360  break;
1361  }
1362  case CFG80211_SIGNAL_TYPE_UNSPEC:
1363  if (sinfo.filled & STATION_INFO_SIGNAL) {
1364  wstats.qual.updated |= IW_QUAL_LEVEL_UPDATED;
1365  wstats.qual.updated |= IW_QUAL_QUAL_UPDATED;
1366  wstats.qual.level = sinfo.signal;
1367  wstats.qual.qual = sinfo.signal;
1368  break;
1369  }
1370  default:
1371  wstats.qual.updated |= IW_QUAL_LEVEL_INVALID;
1372  wstats.qual.updated |= IW_QUAL_QUAL_INVALID;
1373  }
1374 
1375  wstats.qual.updated |= IW_QUAL_NOISE_INVALID;
1376  if (sinfo.filled & STATION_INFO_RX_DROP_MISC)
1377  wstats.discard.misc = sinfo.rx_dropped_misc;
1378  if (sinfo.filled & STATION_INFO_TX_FAILED)
1379  wstats.discard.retries = sinfo.tx_failed;
1380 
1381  return &wstats;
1382 }
1383 
1384 static int cfg80211_wext_siwap(struct net_device *dev,
1385  struct iw_request_info *info,
1386  struct sockaddr *ap_addr, char *extra)
1387 {
1388  struct wireless_dev *wdev = dev->ieee80211_ptr;
1389 
1390  switch (wdev->iftype) {
1391  case NL80211_IFTYPE_ADHOC:
1392  return cfg80211_ibss_wext_siwap(dev, info, ap_addr, extra);
1393  case NL80211_IFTYPE_STATION:
1394  return cfg80211_mgd_wext_siwap(dev, info, ap_addr, extra);
1395  case NL80211_IFTYPE_WDS:
1396  return cfg80211_wds_wext_siwap(dev, info, ap_addr, extra);
1397  default:
1398  return -EOPNOTSUPP;
1399  }
1400 }
1401 
1402 static int cfg80211_wext_giwap(struct net_device *dev,
1403  struct iw_request_info *info,
1404  struct sockaddr *ap_addr, char *extra)
1405 {
1406  struct wireless_dev *wdev = dev->ieee80211_ptr;
1407 
1408  switch (wdev->iftype) {
1409  case NL80211_IFTYPE_ADHOC:
1410  return cfg80211_ibss_wext_giwap(dev, info, ap_addr, extra);
1411  case NL80211_IFTYPE_STATION:
1412  return cfg80211_mgd_wext_giwap(dev, info, ap_addr, extra);
1413  case NL80211_IFTYPE_WDS:
1414  return cfg80211_wds_wext_giwap(dev, info, ap_addr, extra);
1415  default:
1416  return -EOPNOTSUPP;
1417  }
1418 }
1419 
1420 static int cfg80211_wext_siwessid(struct net_device *dev,
1421  struct iw_request_info *info,
1422  struct iw_point *data, char *ssid)
1423 {
1424  struct wireless_dev *wdev = dev->ieee80211_ptr;
1425 
1426  switch (wdev->iftype) {
1427  case NL80211_IFTYPE_ADHOC:
1428  return cfg80211_ibss_wext_siwessid(dev, info, data, ssid);
1429  case NL80211_IFTYPE_STATION:
1430  return cfg80211_mgd_wext_siwessid(dev, info, data, ssid);
1431  default:
1432  return -EOPNOTSUPP;
1433  }
1434 }
1435 
1436 static 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 
1455 static int cfg80211_wext_siwpmksa(struct net_device *dev,
1456  struct iw_request_info *info,
1457  struct iw_point *data, char *extra)
1458 {
1459  struct wireless_dev *wdev = dev->ieee80211_ptr;
1460  struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
1461  struct cfg80211_pmksa cfg_pmksa;
1462  struct iw_pmksa *pmksa = (struct iw_pmksa *)extra;
1463 
1464  memset(&cfg_pmksa, 0, sizeof(struct cfg80211_pmksa));
1465 
1466  if (wdev->iftype != NL80211_IFTYPE_STATION)
1467  return -EINVAL;
1468 
1469  cfg_pmksa.bssid = pmksa->bssid.sa_data;
1470  cfg_pmksa.pmkid = pmksa->pmkid;
1471 
1472  switch (pmksa->cmd) {
1473  case IW_PMKSA_ADD:
1474  if (!rdev->ops->set_pmksa)
1475  return -EOPNOTSUPP;
1476 
1477  return rdev->ops->set_pmksa(&rdev->wiphy, dev, &cfg_pmksa);
1478 
1479  case IW_PMKSA_REMOVE:
1480  if (!rdev->ops->del_pmksa)
1481  return -EOPNOTSUPP;
1482 
1483  return rdev->ops->del_pmksa(&rdev->wiphy, dev, &cfg_pmksa);
1484 
1485  case IW_PMKSA_FLUSH:
1486  if (!rdev->ops->flush_pmksa)
1487  return -EOPNOTSUPP;
1488 
1489  return rdev->ops->flush_pmksa(&rdev->wiphy, dev);
1490 
1491  default:
1492  return -EOPNOTSUPP;
1493  }
1494 }
1495 
1496 static const iw_handler cfg80211_handlers[] = {
1497  [IW_IOCTL_IDX(SIOCGIWNAME)] = (iw_handler) cfg80211_wext_giwname,
1498  [IW_IOCTL_IDX(SIOCSIWFREQ)] = (iw_handler) cfg80211_wext_siwfreq,
1499  [IW_IOCTL_IDX(SIOCGIWFREQ)] = (iw_handler) cfg80211_wext_giwfreq,
1500  [IW_IOCTL_IDX(SIOCSIWMODE)] = (iw_handler) cfg80211_wext_siwmode,
1501  [IW_IOCTL_IDX(SIOCGIWMODE)] = (iw_handler) cfg80211_wext_giwmode,
1502  [IW_IOCTL_IDX(SIOCGIWRANGE)] = (iw_handler) cfg80211_wext_giwrange,
1503  [IW_IOCTL_IDX(SIOCSIWAP)] = (iw_handler) cfg80211_wext_siwap,
1504  [IW_IOCTL_IDX(SIOCGIWAP)] = (iw_handler) cfg80211_wext_giwap,
1505  [IW_IOCTL_IDX(SIOCSIWMLME)] = (iw_handler) cfg80211_wext_siwmlme,
1506  [IW_IOCTL_IDX(SIOCSIWSCAN)] = (iw_handler) cfg80211_wext_siwscan,
1507  [IW_IOCTL_IDX(SIOCGIWSCAN)] = (iw_handler) cfg80211_wext_giwscan,
1508  [IW_IOCTL_IDX(SIOCSIWESSID)] = (iw_handler) cfg80211_wext_siwessid,
1509  [IW_IOCTL_IDX(SIOCGIWESSID)] = (iw_handler) cfg80211_wext_giwessid,
1510  [IW_IOCTL_IDX(SIOCSIWRATE)] = (iw_handler) cfg80211_wext_siwrate,
1511  [IW_IOCTL_IDX(SIOCGIWRATE)] = (iw_handler) cfg80211_wext_giwrate,
1512  [IW_IOCTL_IDX(SIOCSIWRTS)] = (iw_handler) cfg80211_wext_siwrts,
1513  [IW_IOCTL_IDX(SIOCGIWRTS)] = (iw_handler) cfg80211_wext_giwrts,
1514  [IW_IOCTL_IDX(SIOCSIWFRAG)] = (iw_handler) cfg80211_wext_siwfrag,
1515  [IW_IOCTL_IDX(SIOCGIWFRAG)] = (iw_handler) cfg80211_wext_giwfrag,
1516  [IW_IOCTL_IDX(SIOCSIWTXPOW)] = (iw_handler) cfg80211_wext_siwtxpower,
1517  [IW_IOCTL_IDX(SIOCGIWTXPOW)] = (iw_handler) cfg80211_wext_giwtxpower,
1518  [IW_IOCTL_IDX(SIOCSIWRETRY)] = (iw_handler) cfg80211_wext_siwretry,
1519  [IW_IOCTL_IDX(SIOCGIWRETRY)] = (iw_handler) cfg80211_wext_giwretry,
1520  [IW_IOCTL_IDX(SIOCSIWENCODE)] = (iw_handler) cfg80211_wext_siwencode,
1521  [IW_IOCTL_IDX(SIOCGIWENCODE)] = (iw_handler) cfg80211_wext_giwencode,
1522  [IW_IOCTL_IDX(SIOCSIWPOWER)] = (iw_handler) cfg80211_wext_siwpower,
1523  [IW_IOCTL_IDX(SIOCGIWPOWER)] = (iw_handler) cfg80211_wext_giwpower,
1524  [IW_IOCTL_IDX(SIOCSIWGENIE)] = (iw_handler) cfg80211_wext_siwgenie,
1525  [IW_IOCTL_IDX(SIOCSIWAUTH)] = (iw_handler) cfg80211_wext_siwauth,
1526  [IW_IOCTL_IDX(SIOCGIWAUTH)] = (iw_handler) cfg80211_wext_giwauth,
1527  [IW_IOCTL_IDX(SIOCSIWENCODEEXT)]= (iw_handler) cfg80211_wext_siwencodeext,
1528  [IW_IOCTL_IDX(SIOCSIWPMKSA)] = (iw_handler) cfg80211_wext_siwpmksa,
1529 };
1530 
1531 const struct iw_handler_def cfg80211_wext_handler = {
1532  .num_standard = ARRAY_SIZE(cfg80211_handlers),
1533  .standard = cfg80211_handlers,
1534  .get_wireless_stats = cfg80211_wireless_stats,
1535 };
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