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[net-next-2.6.git] / net / wireless / wext-compat.c
CommitLineData
fee52678
JB		 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 *
08645126 8 * Copyright 2008-2009 Johannes Berg <johannes@sipsolutions.net>
fee52678
JB		 9 */
10
11#include <linux/wireless.h>
12#include <linux/nl80211.h>
691597cb 13#include <linux/if_arp.h>
08645126 14#include <linux/etherdevice.h>
fee52678 15#include <net/iw_handler.h>
fee52678
JB		 16#include <net/cfg80211.h>
17#include "core.h"
18
19int cfg80211_wext_giwname(struct net_device *dev,
20 struct iw_request_info *info,
21 char *name, char *extra)
22{
23 struct wireless_dev *wdev = dev->ieee80211_ptr;
24 struct ieee80211_supported_band *sband;
25 bool is_ht = false, is_a = false, is_b = false, is_g = false;
26
27 if (!wdev)
28 return -EOPNOTSUPP;
29
30 sband = wdev->wiphy->bands[IEEE80211_BAND_5GHZ];
31 if (sband) {
32 is_a = true;
33 is_ht |= sband->ht_cap.ht_supported;
34 }
35
36 sband = wdev->wiphy->bands[IEEE80211_BAND_2GHZ];
37 if (sband) {
38 int i;
39 /* Check for mandatory rates */
40 for (i = 0; i < sband->n_bitrates; i++) {
41 if (sband->bitrates[i].bitrate == 10)
42 is_b = true;
43 if (sband->bitrates[i].bitrate == 60)
44 is_g = true;
45 }
46 is_ht |= sband->ht_cap.ht_supported;
47 }
48
49 strcpy(name, "IEEE 802.11");
50 if (is_a)
51 strcat(name, "a");
52 if (is_b)
53 strcat(name, "b");
54 if (is_g)
55 strcat(name, "g");
56 if (is_ht)
57 strcat(name, "n");
58
59 return 0;
60}
ba44cb72 61EXPORT_SYMBOL_GPL(cfg80211_wext_giwname);
e60c7744
JB		 62
63int cfg80211_wext_siwmode(struct net_device *dev, struct iw_request_info *info,
64 u32 *mode, char *extra)
65{
66 struct wireless_dev *wdev = dev->ieee80211_ptr;
67 struct cfg80211_registered_device *rdev;
68 struct vif_params vifparams;
69 enum nl80211_iftype type;
ac7f9cfa 70 int ret;
e60c7744
JB		 71
72 if (!wdev)
73 return -EOPNOTSUPP;
74
75 rdev = wiphy_to_dev(wdev->wiphy);
76
77 if (!rdev->ops->change_virtual_intf)
78 return -EOPNOTSUPP;
79
80 /* don't support changing VLANs, you just re-create them */
81 if (wdev->iftype == NL80211_IFTYPE_AP_VLAN)
82 return -EOPNOTSUPP;
83
84 switch (*mode) {
85 case IW_MODE_INFRA:
86 type = NL80211_IFTYPE_STATION;
87 break;
88 case IW_MODE_ADHOC:
89 type = NL80211_IFTYPE_ADHOC;
90 break;
91 case IW_MODE_REPEAT:
92 type = NL80211_IFTYPE_WDS;
93 break;
94 case IW_MODE_MONITOR:
95 type = NL80211_IFTYPE_MONITOR;
96 break;
97 default:
98 return -EINVAL;
99 }
100
ac7f9cfa
JB		 101 if (type == wdev->iftype)
102 return 0;
103
e60c7744
JB		 104 memset(&vifparams, 0, sizeof(vifparams));
105
e36d56b6 106 ret = rdev->ops->change_virtual_intf(wdev->wiphy, dev, type,
ac7f9cfa
JB		 107 NULL, &vifparams);
108 WARN_ON(!ret && wdev->iftype != type);
109
110 return ret;
e60c7744 111}
ba44cb72 112EXPORT_SYMBOL_GPL(cfg80211_wext_siwmode);
e60c7744
JB		 113
114int cfg80211_wext_giwmode(struct net_device *dev, struct iw_request_info *info,
115 u32 *mode, char *extra)
116{
117 struct wireless_dev *wdev = dev->ieee80211_ptr;
118
119 if (!wdev)
120 return -EOPNOTSUPP;
121
122 switch (wdev->iftype) {
123 case NL80211_IFTYPE_AP:
124 *mode = IW_MODE_MASTER;
125 break;
126 case NL80211_IFTYPE_STATION:
127 *mode = IW_MODE_INFRA;
128 break;
129 case NL80211_IFTYPE_ADHOC:
130 *mode = IW_MODE_ADHOC;
131 break;
132 case NL80211_IFTYPE_MONITOR:
133 *mode = IW_MODE_MONITOR;
134 break;
135 case NL80211_IFTYPE_WDS:
136 *mode = IW_MODE_REPEAT;
137 break;
138 case NL80211_IFTYPE_AP_VLAN:
139 *mode = IW_MODE_SECOND; /* FIXME */
140 break;
141 default:
142 *mode = IW_MODE_AUTO;
143 break;
144 }
145 return 0;
146}
ba44cb72 147EXPORT_SYMBOL_GPL(cfg80211_wext_giwmode);
4aa188e1
JB		 148
149
150int cfg80211_wext_giwrange(struct net_device *dev,
151 struct iw_request_info *info,
152 struct iw_point *data, char *extra)
153{
154 struct wireless_dev *wdev = dev->ieee80211_ptr;
155 struct iw_range *range = (struct iw_range *) extra;
156 enum ieee80211_band band;
9834c079 157 int i, c = 0;
4aa188e1
JB		 158
159 if (!wdev)
160 return -EOPNOTSUPP;
161
162 data->length = sizeof(struct iw_range);
163 memset(range, 0, sizeof(struct iw_range));
164
165 range->we_version_compiled = WIRELESS_EXT;
166 range->we_version_source = 21;
167 range->retry_capa = IW_RETRY_LIMIT;
168 range->retry_flags = IW_RETRY_LIMIT;
169 range->min_retry = 0;
170 range->max_retry = 255;
171 range->min_rts = 0;
172 range->max_rts = 2347;
173 range->min_frag = 256;
174 range->max_frag = 2346;
175
4aa188e1
JB		 176 range->max_encoding_tokens = 4;
177
178 range->max_qual.updated = IW_QUAL_NOISE_INVALID;
179
180 switch (wdev->wiphy->signal_type) {
181 case CFG80211_SIGNAL_TYPE_NONE:
182 break;
183 case CFG80211_SIGNAL_TYPE_MBM:
184 range->max_qual.level = -110;
185 range->max_qual.qual = 70;
186 range->avg_qual.qual = 35;
187 range->max_qual.updated |= IW_QUAL_DBM;
188 range->max_qual.updated |= IW_QUAL_QUAL_UPDATED;
189 range->max_qual.updated |= IW_QUAL_LEVEL_UPDATED;
190 break;
191 case CFG80211_SIGNAL_TYPE_UNSPEC:
192 range->max_qual.level = 100;
193 range->max_qual.qual = 100;
194 range->avg_qual.qual = 50;
195 range->max_qual.updated |= IW_QUAL_QUAL_UPDATED;
196 range->max_qual.updated |= IW_QUAL_LEVEL_UPDATED;
197 break;
198 }
199
200 range->avg_qual.level = range->max_qual.level / 2;
201 range->avg_qual.noise = range->max_qual.noise / 2;
202 range->avg_qual.updated = range->max_qual.updated;
203
9834c079
JB		 204 for (i = 0; i < wdev->wiphy->n_cipher_suites; i++) {
205 switch (wdev->wiphy->cipher_suites[i]) {
3daf0975 206 case WLAN_CIPHER_SUITE_TKIP:
27bea66c
DK		 207 range->enc_capa |= (IW_ENC_CAPA_CIPHER_TKIP |
208 IW_ENC_CAPA_WPA);
3daf0975
DK		 209 break;
210
211 case WLAN_CIPHER_SUITE_CCMP:
27bea66c
DK		 212 range->enc_capa |= (IW_ENC_CAPA_CIPHER_CCMP |
213 IW_ENC_CAPA_WPA2);
3daf0975 214 break;
2ab658f9
DK		 215
216 case WLAN_CIPHER_SUITE_WEP40:
217 range->encoding_size[range->num_encoding_sizes++] =
218 WLAN_KEY_LEN_WEP40;
219 break;
220
221 case WLAN_CIPHER_SUITE_WEP104:
222 range->encoding_size[range->num_encoding_sizes++] =
223 WLAN_KEY_LEN_WEP104;
224 break;
3daf0975
DK		 225 }
226 }
4aa188e1 227
4aa188e1 228 for (band = 0; band < IEEE80211_NUM_BANDS; band ++) {
4aa188e1
JB		 229 struct ieee80211_supported_band *sband;
230
231 sband = wdev->wiphy->bands[band];
232
233 if (!sband)
234 continue;
235
236 for (i = 0; i < sband->n_channels && c < IW_MAX_FREQUENCIES; i++) {
237 struct ieee80211_channel *chan = &sband->channels[i];
238
239 if (!(chan->flags & IEEE80211_CHAN_DISABLED)) {
240 range->freq[c].i =
241 ieee80211_frequency_to_channel(
242 chan->center_freq);
243 range->freq[c].m = chan->center_freq;
244 range->freq[c].e = 6;
245 c++;
246 }
247 }
248 }
249 range->num_channels = c;
250 range->num_frequency = c;
251
252 IW_EVENT_CAPA_SET_KERNEL(range->event_capa);
253 IW_EVENT_CAPA_SET(range->event_capa, SIOCGIWAP);
254 IW_EVENT_CAPA_SET(range->event_capa, SIOCGIWSCAN);
255
51cd4aab
DK		 256 if (wdev->wiphy->max_scan_ssids > 0)
257 range->scan_capa |= IW_SCAN_CAPA_ESSID;
4aa188e1
JB		 258
259 return 0;
260}
ba44cb72 261EXPORT_SYMBOL_GPL(cfg80211_wext_giwrange);
691597cb 262
04a773ad
JB		 263
264/**
265 * cfg80211_wext_freq - get wext frequency for non-"auto"
266 * @wiphy: the wiphy
267 * @freq: the wext freq encoding
268 *
269 * Returns a channel, %NULL for auto, or an ERR_PTR for errors!
270 */
271struct ieee80211_channel *cfg80211_wext_freq(struct wiphy *wiphy,
272 struct iw_freq *freq)
273{
0b258582
JB		 274 struct ieee80211_channel *chan;
275 int f;
276
277 /*
278 * Parse frequency - return NULL for auto and
279 * -EINVAL for impossible things.
280 */
04a773ad
JB		 281 if (freq->e == 0) {
282 if (freq->m < 0)
283 return NULL;
0b258582 284 f = ieee80211_channel_to_frequency(freq->m);
04a773ad
JB		 285 } else {
286 int i, div = 1000000;
287 for (i = 0; i < freq->e; i++)
288 div /= 10;
0b258582 289 if (div <= 0)
04a773ad 290 return ERR_PTR(-EINVAL);
0b258582 291 f = freq->m / div;
04a773ad
JB		 292 }
293
0b258582
JB		 294 /*
295 * Look up channel struct and return -EINVAL when
296 * it cannot be found.
297 */
298 chan = ieee80211_get_channel(wiphy, f);
299 if (!chan)
300 return ERR_PTR(-EINVAL);
301 return chan;
04a773ad 302}
ba44cb72 303EXPORT_SYMBOL_GPL(cfg80211_wext_freq);
b9a5f8ca
JM		 304
305int cfg80211_wext_siwrts(struct net_device *dev,
306 struct iw_request_info *info,
307 struct iw_param *rts, char *extra)
308{
309 struct wireless_dev *wdev = dev->ieee80211_ptr;
310 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
311 u32 orts = wdev->wiphy->rts_threshold;
312 int err;
313
314 if (rts->disabled || !rts->fixed)
315 wdev->wiphy->rts_threshold = (u32) -1;
316 else if (rts->value < 0)
317 return -EINVAL;
318 else
319 wdev->wiphy->rts_threshold = rts->value;
320
321 err = rdev->ops->set_wiphy_params(wdev->wiphy,
322 WIPHY_PARAM_RTS_THRESHOLD);
323 if (err)
324 wdev->wiphy->rts_threshold = orts;
325
326 return err;
327}
ba44cb72 328EXPORT_SYMBOL_GPL(cfg80211_wext_siwrts);
b9a5f8ca
JM		 329
330int cfg80211_wext_giwrts(struct net_device *dev,
331 struct iw_request_info *info,
332 struct iw_param *rts, char *extra)
333{
334 struct wireless_dev *wdev = dev->ieee80211_ptr;
335
336 rts->value = wdev->wiphy->rts_threshold;
337 rts->disabled = rts->value == (u32) -1;
338 rts->fixed = 1;
339
340 return 0;
341}
ba44cb72 342EXPORT_SYMBOL_GPL(cfg80211_wext_giwrts);
b9a5f8ca
JM		 343
344int cfg80211_wext_siwfrag(struct net_device *dev,
345 struct iw_request_info *info,
346 struct iw_param *frag, char *extra)
347{
348 struct wireless_dev *wdev = dev->ieee80211_ptr;
349 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
350 u32 ofrag = wdev->wiphy->frag_threshold;
351 int err;
352
353 if (frag->disabled || !frag->fixed)
354 wdev->wiphy->frag_threshold = (u32) -1;
355 else if (frag->value < 256)
356 return -EINVAL;
357 else {
358 /* Fragment length must be even, so strip LSB. */
359 wdev->wiphy->frag_threshold = frag->value & ~0x1;
360 }
361
362 err = rdev->ops->set_wiphy_params(wdev->wiphy,
363 WIPHY_PARAM_FRAG_THRESHOLD);
364 if (err)
365 wdev->wiphy->frag_threshold = ofrag;
366
367 return err;
368}
ba44cb72 369EXPORT_SYMBOL_GPL(cfg80211_wext_siwfrag);
b9a5f8ca
JM		 370
371int cfg80211_wext_giwfrag(struct net_device *dev,
372 struct iw_request_info *info,
373 struct iw_param *frag, char *extra)
374{
375 struct wireless_dev *wdev = dev->ieee80211_ptr;
376
377 frag->value = wdev->wiphy->frag_threshold;
378 frag->disabled = frag->value == (u32) -1;
379 frag->fixed = 1;
380
381 return 0;
382}
ba44cb72 383EXPORT_SYMBOL_GPL(cfg80211_wext_giwfrag);
b9a5f8ca
JM		 384
385int cfg80211_wext_siwretry(struct net_device *dev,
386 struct iw_request_info *info,
387 struct iw_param *retry, char *extra)
388{
389 struct wireless_dev *wdev = dev->ieee80211_ptr;
390 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
391 u32 changed = 0;
392 u8 olong = wdev->wiphy->retry_long;
393 u8 oshort = wdev->wiphy->retry_short;
394 int err;
395
396 if (retry->disabled ||
397 (retry->flags & IW_RETRY_TYPE) != IW_RETRY_LIMIT)
398 return -EINVAL;
399
400 if (retry->flags & IW_RETRY_LONG) {
401 wdev->wiphy->retry_long = retry->value;
402 changed |= WIPHY_PARAM_RETRY_LONG;
403 } else if (retry->flags & IW_RETRY_SHORT) {
404 wdev->wiphy->retry_short = retry->value;
405 changed |= WIPHY_PARAM_RETRY_SHORT;
406 } else {
407 wdev->wiphy->retry_short = retry->value;
408 wdev->wiphy->retry_long = retry->value;
409 changed |= WIPHY_PARAM_RETRY_LONG;
410 changed |= WIPHY_PARAM_RETRY_SHORT;
411 }
412
413 if (!changed)
414 return 0;
415
416 err = rdev->ops->set_wiphy_params(wdev->wiphy, changed);
417 if (err) {
418 wdev->wiphy->retry_short = oshort;
419 wdev->wiphy->retry_long = olong;
420 }
421
422 return err;
423}
ba44cb72 424EXPORT_SYMBOL_GPL(cfg80211_wext_siwretry);
b9a5f8ca
JM		 425
426int cfg80211_wext_giwretry(struct net_device *dev,
427 struct iw_request_info *info,
428 struct iw_param *retry, char *extra)
429{
430 struct wireless_dev *wdev = dev->ieee80211_ptr;
431
432 retry->disabled = 0;
433
434 if (retry->flags == 0 || (retry->flags & IW_RETRY_SHORT)) {
435 /*
436 * First return short value, iwconfig will ask long value
437 * later if needed
438 */
439 retry->flags |= IW_RETRY_LIMIT;
440 retry->value = wdev->wiphy->retry_short;
441 if (wdev->wiphy->retry_long != wdev->wiphy->retry_short)
442 retry->flags |= IW_RETRY_LONG;
443
444 return 0;
445 }
446
447 if (retry->flags & IW_RETRY_LONG) {
448 retry->flags = IW_RETRY_LIMIT | IW_RETRY_LONG;
449 retry->value = wdev->wiphy->retry_long;
450 }
451
452 return 0;
453}
ba44cb72 454EXPORT_SYMBOL_GPL(cfg80211_wext_giwretry);
08645126
JB		 455
456static int cfg80211_set_encryption(struct cfg80211_registered_device *rdev,
457 struct net_device *dev, const u8 *addr,
458 bool remove, bool tx_key, int idx,
459 struct key_params *params)
460{
461 struct wireless_dev *wdev = dev->ieee80211_ptr;
462 int err;
463
464 if (params->cipher == WLAN_CIPHER_SUITE_AES_CMAC) {
465 if (!rdev->ops->set_default_mgmt_key)
466 return -EOPNOTSUPP;
467
468 if (idx < 4 || idx > 5)
469 return -EINVAL;
470 } else if (idx < 0 || idx > 3)
471 return -EINVAL;
472
473 if (remove) {
474 err = rdev->ops->del_key(&rdev->wiphy, dev, idx, addr);
475 if (!err) {
476 if (idx == wdev->wext.default_key)
477 wdev->wext.default_key = -1;
478 else if (idx == wdev->wext.default_mgmt_key)
479 wdev->wext.default_mgmt_key = -1;
480 }
e3da574a
JB		 481 /*
482 * Applications using wireless extensions expect to be
483 * able to delete keys that don't exist, so allow that.
484 */
485 if (err == -ENOENT)
486 return 0;
487
08645126
JB		 488 return err;
489 } else {
490 if (addr)
491 tx_key = false;
492
493 if (cfg80211_validate_key_settings(params, idx, addr))
494 return -EINVAL;
495
496 err = rdev->ops->add_key(&rdev->wiphy, dev, idx, addr, params);
497 if (err)
498 return err;
499
500 if (tx_key || (!addr && wdev->wext.default_key == -1)) {
501 err = rdev->ops->set_default_key(&rdev->wiphy,
502 dev, idx);
503 if (!err)
504 wdev->wext.default_key = idx;
505 return err;
506 }
507
508 if (params->cipher == WLAN_CIPHER_SUITE_AES_CMAC &&
509 (tx_key || (!addr && wdev->wext.default_mgmt_key == -1))) {
510 err = rdev->ops->set_default_mgmt_key(&rdev->wiphy,
511 dev, idx);
512 if (!err)
513 wdev->wext.default_mgmt_key = idx;
514 return err;
515 }
516
517 return 0;
518 }
519}
520
521int cfg80211_wext_siwencode(struct net_device *dev,
522 struct iw_request_info *info,
523 struct iw_point *erq, char *keybuf)
524{
525 struct wireless_dev *wdev = dev->ieee80211_ptr;
526 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
527 int idx, err;
528 bool remove = false;
529 struct key_params params;
530
531 /* no use -- only MFP (set_default_mgmt_key) is optional */
532 if (!rdev->ops->del_key ||
533 !rdev->ops->add_key ||
534 !rdev->ops->set_default_key)
535 return -EOPNOTSUPP;
536
537 idx = erq->flags & IW_ENCODE_INDEX;
538 if (idx == 0) {
539 idx = wdev->wext.default_key;
540 if (idx < 0)
541 idx = 0;
542 } else if (idx < 1 || idx > 4)
543 return -EINVAL;
544 else
545 idx--;
546
547 if (erq->flags & IW_ENCODE_DISABLED)
548 remove = true;
549 else if (erq->length == 0) {
550 /* No key data - just set the default TX key index */
551 err = rdev->ops->set_default_key(&rdev->wiphy, dev, idx);
552 if (!err)
553 wdev->wext.default_key = idx;
554 return err;
555 }
556
557 memset(&params, 0, sizeof(params));
558 params.key = keybuf;
559 params.key_len = erq->length;
560 if (erq->length == 5)
561 params.cipher = WLAN_CIPHER_SUITE_WEP40;
562 else if (erq->length == 13)
563 params.cipher = WLAN_CIPHER_SUITE_WEP104;
564 else if (!remove)
565 return -EINVAL;
566
567 return cfg80211_set_encryption(rdev, dev, NULL, remove,
568 wdev->wext.default_key == -1,
569 idx, &params);
570}
571EXPORT_SYMBOL_GPL(cfg80211_wext_siwencode);
572
573int cfg80211_wext_siwencodeext(struct net_device *dev,
574 struct iw_request_info *info,
575 struct iw_point *erq, char *extra)
576{
577 struct wireless_dev *wdev = dev->ieee80211_ptr;
578 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
579 struct iw_encode_ext *ext = (struct iw_encode_ext *) extra;
580 const u8 *addr;
581 int idx;
582 bool remove = false;
583 struct key_params params;
584 u32 cipher;
585
586 /* no use -- only MFP (set_default_mgmt_key) is optional */
587 if (!rdev->ops->del_key ||
588 !rdev->ops->add_key ||
589 !rdev->ops->set_default_key)
590 return -EOPNOTSUPP;
591
592 switch (ext->alg) {
593 case IW_ENCODE_ALG_NONE:
594 remove = true;
595 cipher = 0;
596 break;
597 case IW_ENCODE_ALG_WEP:
598 if (ext->key_len == 5)
599 cipher = WLAN_CIPHER_SUITE_WEP40;
600 else if (ext->key_len == 13)
601 cipher = WLAN_CIPHER_SUITE_WEP104;
602 else
603 return -EINVAL;
604 break;
605 case IW_ENCODE_ALG_TKIP:
606 cipher = WLAN_CIPHER_SUITE_TKIP;
607 break;
608 case IW_ENCODE_ALG_CCMP:
609 cipher = WLAN_CIPHER_SUITE_CCMP;
610 break;
611 case IW_ENCODE_ALG_AES_CMAC:
612 cipher = WLAN_CIPHER_SUITE_AES_CMAC;
613 break;
614 default:
615 return -EOPNOTSUPP;
616 }
617
618 if (erq->flags & IW_ENCODE_DISABLED)
619 remove = true;
620
621 idx = erq->flags & IW_ENCODE_INDEX;
622 if (cipher == WLAN_CIPHER_SUITE_AES_CMAC) {
623 if (idx < 4 || idx > 5) {
624 idx = wdev->wext.default_mgmt_key;
625 if (idx < 0)
626 return -EINVAL;
627 } else
628 idx--;
629 } else {
630 if (idx < 1 || idx > 4) {
631 idx = wdev->wext.default_key;
632 if (idx < 0)
633 return -EINVAL;
634 } else
635 idx--;
636 }
637
638 addr = ext->addr.sa_data;
639 if (is_broadcast_ether_addr(addr))
640 addr = NULL;
641
642 memset(&params, 0, sizeof(params));
643 params.key = ext->key;
644 params.key_len = ext->key_len;
645 params.cipher = cipher;
646
faa8fdc8
JM		 647 if (ext->ext_flags & IW_ENCODE_EXT_RX_SEQ_VALID) {
648 params.seq = ext->rx_seq;
649 params.seq_len = 6;
650 }
651
08645126
JB		 652 return cfg80211_set_encryption(
653 rdev, dev, addr, remove,
654 ext->ext_flags & IW_ENCODE_EXT_SET_TX_KEY,
655 idx, &params);
656}
657EXPORT_SYMBOL_GPL(cfg80211_wext_siwencodeext);
658
659struct giwencode_cookie {
660 size_t buflen;
661 char *keybuf;
662};
663
664static void giwencode_get_key_cb(void *cookie, struct key_params *params)
665{
666 struct giwencode_cookie *data = cookie;
667
668 if (!params->key) {
669 data->buflen = 0;
670 return;
671 }
672
673 data->buflen = min_t(size_t, data->buflen, params->key_len);
674 memcpy(data->keybuf, params->key, data->buflen);
675}
676
677int cfg80211_wext_giwencode(struct net_device *dev,
678 struct iw_request_info *info,
679 struct iw_point *erq, char *keybuf)
680{
681 struct wireless_dev *wdev = dev->ieee80211_ptr;
682 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
683 int idx, err;
684 struct giwencode_cookie data = {
685 .keybuf = keybuf,
686 .buflen = erq->length,
687 };
688
689 if (!rdev->ops->get_key)
690 return -EOPNOTSUPP;
691
692 idx = erq->flags & IW_ENCODE_INDEX;
693 if (idx == 0) {
694 idx = wdev->wext.default_key;
695 if (idx < 0)
696 idx = 0;
697 } else if (idx < 1 || idx > 4)
698 return -EINVAL;
699 else
700 idx--;
701
702 erq->flags = idx + 1;
703
704 err = rdev->ops->get_key(&rdev->wiphy, dev, idx, NULL, &data,
705 giwencode_get_key_cb);
706 if (!err) {
707 erq->length = data.buflen;
708 erq->flags |= IW_ENCODE_ENABLED;
709 return 0;
710 }
711
712 if (err == -ENOENT) {
713 erq->flags |= IW_ENCODE_DISABLED;
714 erq->length = 0;
715 return 0;
716 }
717
718 return err;
719}
720EXPORT_SYMBOL_GPL(cfg80211_wext_giwencode);
7643a2c3
JB		 721
722int cfg80211_wext_siwtxpower(struct net_device *dev,
723 struct iw_request_info *info,
724 union iwreq_data *data, char *extra)
725{
726 struct wireless_dev *wdev = dev->ieee80211_ptr;
727 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
728 enum tx_power_setting type;
729 int dbm = 0;
730
731 if ((data->txpower.flags & IW_TXPOW_TYPE) != IW_TXPOW_DBM)
732 return -EINVAL;
733 if (data->txpower.flags & IW_TXPOW_RANGE)
734 return -EINVAL;
735
736 if (!rdev->ops->set_tx_power)
737 return -EOPNOTSUPP;
738
739 /* only change when not disabling */
740 if (!data->txpower.disabled) {
1f87f7d3
JB		 741 rfkill_set_sw_state(rdev->rfkill, false);
742
7643a2c3
JB		 743 if (data->txpower.fixed) {
744 /*
745 * wext doesn't support negative values, see
746 * below where it's for automatic
747 */
748 if (data->txpower.value < 0)
749 return -EINVAL;
750 dbm = data->txpower.value;
751 type = TX_POWER_FIXED;
752 /* TODO: do regulatory check! */
753 } else {
754 /*
755 * Automatic power level setting, max being the value
756 * passed in from userland.
757 */
758 if (data->txpower.value < 0) {
759 type = TX_POWER_AUTOMATIC;
760 } else {
761 dbm = data->txpower.value;
762 type = TX_POWER_LIMITED;
763 }
764 }
765 } else {
1f87f7d3
JB		 766 rfkill_set_sw_state(rdev->rfkill, true);
767 schedule_work(&rdev->rfkill_sync);
768 return 0;
7643a2c3
JB		 769 }
770
771 return rdev->ops->set_tx_power(wdev->wiphy, type, dbm);;
772}
773EXPORT_SYMBOL_GPL(cfg80211_wext_siwtxpower);
774
775int cfg80211_wext_giwtxpower(struct net_device *dev,
776 struct iw_request_info *info,
777 union iwreq_data *data, char *extra)
778{
779 struct wireless_dev *wdev = dev->ieee80211_ptr;
780 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
781 int err, val;
782
783 if ((data->txpower.flags & IW_TXPOW_TYPE) != IW_TXPOW_DBM)
784 return -EINVAL;
785 if (data->txpower.flags & IW_TXPOW_RANGE)
786 return -EINVAL;
787
788 if (!rdev->ops->get_tx_power)
789 return -EOPNOTSUPP;
790
791 err = rdev->ops->get_tx_power(wdev->wiphy, &val);
1f87f7d3 792 if (err)
7643a2c3
JB		 793 return err;
794
795 /* well... oh well */
796 data->txpower.fixed = 1;
1f87f7d3 797 data->txpower.disabled = rfkill_blocked(rdev->rfkill);
7643a2c3
JB		 798 data->txpower.value = val;
799 data->txpower.flags = IW_TXPOW_DBM;
800
801 return 0;
802}
803EXPORT_SYMBOL_GPL(cfg80211_wext_giwtxpower);
f2129354
JB		 804
805static int cfg80211_set_auth_alg(struct wireless_dev *wdev,
806 s32 auth_alg)
807{
808 int nr_alg = 0;
809
810 if (!auth_alg)
811 return -EINVAL;
812
813 if (auth_alg & ~(IW_AUTH_ALG_OPEN_SYSTEM |
814 IW_AUTH_ALG_SHARED_KEY |
815 IW_AUTH_ALG_LEAP))
816 return -EINVAL;
817
818 if (auth_alg & IW_AUTH_ALG_OPEN_SYSTEM) {
819 nr_alg++;
820 wdev->wext.connect.auth_type = NL80211_AUTHTYPE_OPEN_SYSTEM;
821 }
822
823 if (auth_alg & IW_AUTH_ALG_SHARED_KEY) {
824 nr_alg++;
825 wdev->wext.connect.auth_type = NL80211_AUTHTYPE_SHARED_KEY;
826 }
827
828 if (auth_alg & IW_AUTH_ALG_LEAP) {
829 nr_alg++;
830 wdev->wext.connect.auth_type = NL80211_AUTHTYPE_NETWORK_EAP;
831 }
832
833 if (nr_alg > 1)
834 wdev->wext.connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
835
836 return 0;
837}
838
839static int cfg80211_set_wpa_version(struct wireless_dev *wdev, u32 wpa_versions)
840{
841 wdev->wext.connect.crypto.wpa_versions = 0;
842
843 if (wpa_versions & ~(IW_AUTH_WPA_VERSION_WPA |
844 IW_AUTH_WPA_VERSION_WPA2))
845 return -EINVAL;
846
847 if (wpa_versions & IW_AUTH_WPA_VERSION_WPA)
848 wdev->wext.connect.crypto.wpa_versions |=
849 NL80211_WPA_VERSION_1;
850
851 if (wpa_versions & IW_AUTH_WPA_VERSION_WPA2)
852 wdev->wext.connect.crypto.wpa_versions |=
853 NL80211_WPA_VERSION_2;
854
855 return 0;
856}
857
4f5dadce 858static int cfg80211_set_cipher_group(struct wireless_dev *wdev, u32 cipher)
f2129354
JB		 859{
860 wdev->wext.connect.crypto.cipher_group = 0;
861
862 if (cipher & IW_AUTH_CIPHER_WEP40)
863 wdev->wext.connect.crypto.cipher_group =
864 WLAN_CIPHER_SUITE_WEP40;
865 else if (cipher & IW_AUTH_CIPHER_WEP104)
866 wdev->wext.connect.crypto.cipher_group =
867 WLAN_CIPHER_SUITE_WEP104;
868 else if (cipher & IW_AUTH_CIPHER_TKIP)
869 wdev->wext.connect.crypto.cipher_group =
870 WLAN_CIPHER_SUITE_TKIP;
871 else if (cipher & IW_AUTH_CIPHER_CCMP)
872 wdev->wext.connect.crypto.cipher_group =
873 WLAN_CIPHER_SUITE_CCMP;
874 else if (cipher & IW_AUTH_CIPHER_AES_CMAC)
875 wdev->wext.connect.crypto.cipher_group =
876 WLAN_CIPHER_SUITE_AES_CMAC;
877 else
878 return -EINVAL;
879
880 return 0;
881}
882
4f5dadce 883static int cfg80211_set_cipher_pairwise(struct wireless_dev *wdev, u32 cipher)
f2129354
JB		 884{
885 int nr_ciphers = 0;
886 u32 *ciphers_pairwise = wdev->wext.connect.crypto.ciphers_pairwise;
887
888 if (cipher & IW_AUTH_CIPHER_WEP40) {
889 ciphers_pairwise[nr_ciphers] = WLAN_CIPHER_SUITE_WEP40;
890 nr_ciphers++;
891 }
892
893 if (cipher & IW_AUTH_CIPHER_WEP104) {
894 ciphers_pairwise[nr_ciphers] = WLAN_CIPHER_SUITE_WEP104;
895 nr_ciphers++;
896 }
897
898 if (cipher & IW_AUTH_CIPHER_TKIP) {
899 ciphers_pairwise[nr_ciphers] = WLAN_CIPHER_SUITE_TKIP;
900 nr_ciphers++;
901 }
902
903 if (cipher & IW_AUTH_CIPHER_CCMP) {
904 ciphers_pairwise[nr_ciphers] = WLAN_CIPHER_SUITE_CCMP;
905 nr_ciphers++;
906 }
907
908 if (cipher & IW_AUTH_CIPHER_AES_CMAC) {
909 ciphers_pairwise[nr_ciphers] = WLAN_CIPHER_SUITE_AES_CMAC;
910 nr_ciphers++;
911 }
912
913 BUILD_BUG_ON(NL80211_MAX_NR_CIPHER_SUITES < 5);
914
915 wdev->wext.connect.crypto.n_ciphers_pairwise = nr_ciphers;
916
917 return 0;
918}
919
920
4f5dadce 921static int cfg80211_set_key_mgt(struct wireless_dev *wdev, u32 key_mgt)
f2129354
JB		 922{
923 int nr_akm_suites = 0;
924
925 if (key_mgt & ~(IW_AUTH_KEY_MGMT_802_1X |
926 IW_AUTH_KEY_MGMT_PSK))
927 return -EINVAL;
928
929 if (key_mgt & IW_AUTH_KEY_MGMT_802_1X) {
930 wdev->wext.connect.crypto.akm_suites[nr_akm_suites] =
931 WLAN_AKM_SUITE_8021X;
932 nr_akm_suites++;
933 }
934
935 if (key_mgt & IW_AUTH_KEY_MGMT_PSK) {
936 wdev->wext.connect.crypto.akm_suites[nr_akm_suites] =
937 WLAN_AKM_SUITE_PSK;
938 nr_akm_suites++;
939 }
940
941 wdev->wext.connect.crypto.n_akm_suites = nr_akm_suites;
942
943 return 0;
944}
945
946int cfg80211_wext_siwauth(struct net_device *dev,
947 struct iw_request_info *info,
948 struct iw_param *data, char *extra)
949{
950 struct wireless_dev *wdev = dev->ieee80211_ptr;
951
952 if (wdev->iftype != NL80211_IFTYPE_STATION)
953 return -EOPNOTSUPP;
954
955 switch (data->flags & IW_AUTH_INDEX) {
956 case IW_AUTH_PRIVACY_INVOKED:
957 wdev->wext.connect.privacy = data->value;
958 return 0;
959 case IW_AUTH_WPA_VERSION:
960 return cfg80211_set_wpa_version(wdev, data->value);
961 case IW_AUTH_CIPHER_GROUP:
962 return cfg80211_set_cipher_group(wdev, data->value);
963 case IW_AUTH_KEY_MGMT:
964 return cfg80211_set_key_mgt(wdev, data->value);
965 case IW_AUTH_CIPHER_PAIRWISE:
966 return cfg80211_set_cipher_pairwise(wdev, data->value);
967 case IW_AUTH_80211_AUTH_ALG:
968 return cfg80211_set_auth_alg(wdev, data->value);
969 case IW_AUTH_WPA_ENABLED:
970 case IW_AUTH_RX_UNENCRYPTED_EAPOL:
971 case IW_AUTH_DROP_UNENCRYPTED:
972 case IW_AUTH_MFP:
973 return 0;
974 default:
975 return -EOPNOTSUPP;
976 }
977}
978EXPORT_SYMBOL_GPL(cfg80211_wext_siwauth);
979
980int cfg80211_wext_giwauth(struct net_device *dev,
981 struct iw_request_info *info,
982 struct iw_param *data, char *extra)
983{
984 /* XXX: what do we need? */
985
986 return -EOPNOTSUPP;
987}
988EXPORT_SYMBOL_GPL(cfg80211_wext_giwauth);
bc92afd9
JB		 989
990int cfg80211_wext_siwpower(struct net_device *dev,
991 struct iw_request_info *info,
992 struct iw_param *wrq, char *extra)
993{
994 struct wireless_dev *wdev = dev->ieee80211_ptr;
995 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
996 bool ps = wdev->wext.ps;
997 int timeout = wdev->wext.ps_timeout;
998 int err;
999
1000 if (wdev->iftype != NL80211_IFTYPE_STATION)
1001 return -EINVAL;
1002
1003 if (!rdev->ops->set_power_mgmt)
1004 return -EOPNOTSUPP;
1005
1006 if (wrq->disabled) {
1007 ps = false;
1008 } else {
1009 switch (wrq->flags & IW_POWER_MODE) {
1010 case IW_POWER_ON: /* If not specified */
1011 case IW_POWER_MODE: /* If set all mask */
1012 case IW_POWER_ALL_R: /* If explicitely state all */
1013 ps = true;
1014 break;
1015 default: /* Otherwise we ignore */
1016 return -EINVAL;
1017 }
1018
1019 if (wrq->flags & ~(IW_POWER_MODE | IW_POWER_TIMEOUT))
1020 return -EINVAL;
1021
1022 if (wrq->flags & IW_POWER_TIMEOUT)
1023 timeout = wrq->value / 1000;
1024 }
1025
1026 err = rdev->ops->set_power_mgmt(wdev->wiphy, dev, ps, timeout);
1027 if (err)
1028 return err;
1029
1030 wdev->wext.ps = ps;
1031 wdev->wext.ps_timeout = timeout;
1032
1033 return 0;
1034
1035}
1036EXPORT_SYMBOL_GPL(cfg80211_wext_siwpower);
1037
1038int cfg80211_wext_giwpower(struct net_device *dev,
1039 struct iw_request_info *info,
1040 struct iw_param *wrq, char *extra)
1041{
1042 struct wireless_dev *wdev = dev->ieee80211_ptr;
1043
1044 wrq->disabled = !wdev->wext.ps;
1045
1046 return 0;
1047}
1048EXPORT_SYMBOL_GPL(cfg80211_wext_giwpower);
ab737a4f
JB		 1049
1050int cfg80211_wds_wext_siwap(struct net_device *dev,
1051 struct iw_request_info *info,
1052 struct sockaddr *addr, char *extra)
1053{
1054 struct wireless_dev *wdev = dev->ieee80211_ptr;
1055 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
1056 int err;
1057
1058 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_WDS))
1059 return -EINVAL;
1060
1061 if (addr->sa_family != ARPHRD_ETHER)
1062 return -EINVAL;
1063
1064 if (netif_running(dev))
1065 return -EBUSY;
1066
1067 if (!rdev->ops->set_wds_peer)
1068 return -EOPNOTSUPP;
1069
1070 err = rdev->ops->set_wds_peer(wdev->wiphy, dev, (u8 *) &addr->sa_data);
1071 if (err)
1072 return err;
1073
1074 memcpy(&wdev->wext.bssid, (u8 *) &addr->sa_data, ETH_ALEN);
1075
1076 return 0;
1077}
1078EXPORT_SYMBOL_GPL(cfg80211_wds_wext_siwap);
1079
1080int cfg80211_wds_wext_giwap(struct net_device *dev,
1081 struct iw_request_info *info,
1082 struct sockaddr *addr, char *extra)
1083{
1084 struct wireless_dev *wdev = dev->ieee80211_ptr;
1085
1086 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_WDS))
1087 return -EINVAL;
1088
1089 addr->sa_family = ARPHRD_ETHER;
1090 memcpy(&addr->sa_data, wdev->wext.bssid, ETH_ALEN);
1091
1092 return 0;
1093}
1094EXPORT_SYMBOL_GPL(cfg80211_wds_wext_giwap);
9930380f
JB		 1095
1096int cfg80211_wext_siwrate(struct net_device *dev,
1097 struct iw_request_info *info,
1098 struct iw_param *rate, char *extra)
1099{
1100 struct wireless_dev *wdev = dev->ieee80211_ptr;
1101 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
1102 struct cfg80211_bitrate_mask mask;
1103
1104 if (!rdev->ops->set_bitrate_mask)
1105 return -EOPNOTSUPP;
1106
1107 mask.fixed = 0;
1108 mask.maxrate = 0;
1109
1110 if (rate->value < 0) {
1111 /* nothing */
1112 } else if (rate->fixed) {
1113 mask.fixed = rate->value / 1000; /* kbps */
1114 } else {
1115 mask.maxrate = rate->value / 1000; /* kbps */
1116 }
1117
1118 return rdev->ops->set_bitrate_mask(wdev->wiphy, dev, NULL, &mask);
1119}
1120EXPORT_SYMBOL_GPL(cfg80211_wext_siwrate);
1121
1122int cfg80211_wext_giwrate(struct net_device *dev,
1123 struct iw_request_info *info,
1124 struct iw_param *rate, char *extra)
1125{
1126 struct wireless_dev *wdev = dev->ieee80211_ptr;
1127 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
1128 /* we are under RTNL - globally locked - so can use a static struct */
1129 static struct station_info sinfo;
1130 u8 *addr;
1131 int err;
1132
1133 if (wdev->iftype != NL80211_IFTYPE_STATION)
1134 return -EOPNOTSUPP;
1135
1136 if (!rdev->ops->get_station)
1137 return -EOPNOTSUPP;
1138
6c230c02
SO		 1139 if (wdev->current_bss)
1140 addr = wdev->current_bss->pub.bssid;
1141 else if (wdev->wext.connect.bssid)
1142 addr = wdev->wext.connect.bssid;
1143 else
9930380f
JB		 1144 return -EOPNOTSUPP;
1145
1146 err = rdev->ops->get_station(&rdev->wiphy, dev, addr, &sinfo);
1147 if (err)
1148 return err;
1149
1150 if (!(sinfo.filled & STATION_INFO_TX_BITRATE))
1151 return -EOPNOTSUPP;
1152
1153 rate->value = 0;
1154
1155 if (!(sinfo.txrate.flags & RATE_INFO_FLAGS_MCS))
1156 rate->value = 100000 * sinfo.txrate.legacy;
1157
1158 return 0;
1159}
1160EXPORT_SYMBOL_GPL(cfg80211_wext_giwrate);
8990646d
JB		 1161
1162/* Get wireless statistics. Called by /proc/net/wireless and by SIOCGIWSTATS */
1163struct iw_statistics *cfg80211_wireless_stats(struct net_device *dev)
1164{
1165 struct wireless_dev *wdev = dev->ieee80211_ptr;
1166 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
1167 /* we are under RTNL - globally locked - so can use static structs */
1168 static struct iw_statistics wstats;
1169 static struct station_info sinfo;
1170 u8 *addr;
1171
1172 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION)
1173 return NULL;
1174
1175 if (!rdev->ops->get_station)
1176 return NULL;
1177
1178 addr = wdev->wext.connect.bssid;
1179 if (!addr)
1180 return NULL;
1181
1182 if (rdev->ops->get_station(&rdev->wiphy, dev, addr, &sinfo))
1183 return NULL;
1184
1185 memset(&wstats, 0, sizeof(wstats));
1186
1187 switch (rdev->wiphy.signal_type) {
1188 case CFG80211_SIGNAL_TYPE_MBM:
1189 if (sinfo.filled & STATION_INFO_SIGNAL) {
1190 int sig = sinfo.signal;
1191 wstats.qual.updated |= IW_QUAL_LEVEL_UPDATED;
1192 wstats.qual.updated |= IW_QUAL_QUAL_UPDATED;
1193 wstats.qual.updated |= IW_QUAL_DBM;
1194 wstats.qual.level = sig;
1195 if (sig < -110)
1196 sig = -110;
1197 else if (sig > -40)
1198 sig = -40;
1199 wstats.qual.qual = sig + 110;
1200 break;
1201 }
1202 case CFG80211_SIGNAL_TYPE_UNSPEC:
1203 if (sinfo.filled & STATION_INFO_SIGNAL) {
1204 wstats.qual.updated |= IW_QUAL_LEVEL_UPDATED;
1205 wstats.qual.updated |= IW_QUAL_QUAL_UPDATED;
1206 wstats.qual.level = sinfo.signal;
1207 wstats.qual.qual = sinfo.signal;
1208 break;
1209 }
1210 default:
1211 wstats.qual.updated |= IW_QUAL_LEVEL_INVALID;
1212 wstats.qual.updated |= IW_QUAL_QUAL_INVALID;
1213 }
1214
1215 wstats.qual.updated |= IW_QUAL_NOISE_INVALID;
1216
1217 return &wstats;
1218}
1219EXPORT_SYMBOL_GPL(cfg80211_wireless_stats);
Clone of davem's net-next-2.6 tree