xref: /openbmc/linux/net/wireless/wext-compat.c (revision 68198dca)
1 // SPDX-License-Identifier: GPL-2.0
2 /*
3  * cfg80211 - wext compat code
4  *
5  * This is temporary code until all wireless functionality is migrated
6  * into cfg80211, when that happens all the exports here go away and
7  * we directly assign the wireless handlers of wireless interfaces.
8  *
9  * Copyright 2008-2009	Johannes Berg <johannes@sipsolutions.net>
10  */
11 
12 #include <linux/export.h>
13 #include <linux/wireless.h>
14 #include <linux/nl80211.h>
15 #include <linux/if_arp.h>
16 #include <linux/etherdevice.h>
17 #include <linux/slab.h>
18 #include <net/iw_handler.h>
19 #include <net/cfg80211.h>
20 #include <net/cfg80211-wext.h>
21 #include "wext-compat.h"
22 #include "core.h"
23 #include "rdev-ops.h"
24 
25 int cfg80211_wext_giwname(struct net_device *dev,
26 			  struct iw_request_info *info,
27 			  char *name, char *extra)
28 {
29 	strcpy(name, "IEEE 802.11");
30 	return 0;
31 }
32 EXPORT_WEXT_HANDLER(cfg80211_wext_giwname);
33 
34 int cfg80211_wext_siwmode(struct net_device *dev, struct iw_request_info *info,
35 			  u32 *mode, char *extra)
36 {
37 	struct wireless_dev *wdev = dev->ieee80211_ptr;
38 	struct cfg80211_registered_device *rdev;
39 	struct vif_params vifparams;
40 	enum nl80211_iftype type;
41 
42 	rdev = wiphy_to_rdev(wdev->wiphy);
43 
44 	switch (*mode) {
45 	case IW_MODE_INFRA:
46 		type = NL80211_IFTYPE_STATION;
47 		break;
48 	case IW_MODE_ADHOC:
49 		type = NL80211_IFTYPE_ADHOC;
50 		break;
51 	case IW_MODE_REPEAT:
52 		type = NL80211_IFTYPE_WDS;
53 		break;
54 	case IW_MODE_MONITOR:
55 		type = NL80211_IFTYPE_MONITOR;
56 		break;
57 	default:
58 		return -EINVAL;
59 	}
60 
61 	if (type == wdev->iftype)
62 		return 0;
63 
64 	memset(&vifparams, 0, sizeof(vifparams));
65 
66 	return cfg80211_change_iface(rdev, dev, type, &vifparams);
67 }
68 EXPORT_WEXT_HANDLER(cfg80211_wext_siwmode);
69 
70 int cfg80211_wext_giwmode(struct net_device *dev, struct iw_request_info *info,
71 			  u32 *mode, char *extra)
72 {
73 	struct wireless_dev *wdev = dev->ieee80211_ptr;
74 
75 	if (!wdev)
76 		return -EOPNOTSUPP;
77 
78 	switch (wdev->iftype) {
79 	case NL80211_IFTYPE_AP:
80 		*mode = IW_MODE_MASTER;
81 		break;
82 	case NL80211_IFTYPE_STATION:
83 		*mode = IW_MODE_INFRA;
84 		break;
85 	case NL80211_IFTYPE_ADHOC:
86 		*mode = IW_MODE_ADHOC;
87 		break;
88 	case NL80211_IFTYPE_MONITOR:
89 		*mode = IW_MODE_MONITOR;
90 		break;
91 	case NL80211_IFTYPE_WDS:
92 		*mode = IW_MODE_REPEAT;
93 		break;
94 	case NL80211_IFTYPE_AP_VLAN:
95 		*mode = IW_MODE_SECOND;		/* FIXME */
96 		break;
97 	default:
98 		*mode = IW_MODE_AUTO;
99 		break;
100 	}
101 	return 0;
102 }
103 EXPORT_WEXT_HANDLER(cfg80211_wext_giwmode);
104 
105 
106 int cfg80211_wext_giwrange(struct net_device *dev,
107 			   struct iw_request_info *info,
108 			   struct iw_point *data, char *extra)
109 {
110 	struct wireless_dev *wdev = dev->ieee80211_ptr;
111 	struct iw_range *range = (struct iw_range *) extra;
112 	enum nl80211_band band;
113 	int i, c = 0;
114 
115 	if (!wdev)
116 		return -EOPNOTSUPP;
117 
118 	data->length = sizeof(struct iw_range);
119 	memset(range, 0, sizeof(struct iw_range));
120 
121 	range->we_version_compiled = WIRELESS_EXT;
122 	range->we_version_source = 21;
123 	range->retry_capa = IW_RETRY_LIMIT;
124 	range->retry_flags = IW_RETRY_LIMIT;
125 	range->min_retry = 0;
126 	range->max_retry = 255;
127 	range->min_rts = 0;
128 	range->max_rts = 2347;
129 	range->min_frag = 256;
130 	range->max_frag = 2346;
131 
132 	range->max_encoding_tokens = 4;
133 
134 	range->max_qual.updated = IW_QUAL_NOISE_INVALID;
135 
136 	switch (wdev->wiphy->signal_type) {
137 	case CFG80211_SIGNAL_TYPE_NONE:
138 		break;
139 	case CFG80211_SIGNAL_TYPE_MBM:
140 		range->max_qual.level = (u8)-110;
141 		range->max_qual.qual = 70;
142 		range->avg_qual.qual = 35;
143 		range->max_qual.updated |= IW_QUAL_DBM;
144 		range->max_qual.updated |= IW_QUAL_QUAL_UPDATED;
145 		range->max_qual.updated |= IW_QUAL_LEVEL_UPDATED;
146 		break;
147 	case CFG80211_SIGNAL_TYPE_UNSPEC:
148 		range->max_qual.level = 100;
149 		range->max_qual.qual = 100;
150 		range->avg_qual.qual = 50;
151 		range->max_qual.updated |= IW_QUAL_QUAL_UPDATED;
152 		range->max_qual.updated |= IW_QUAL_LEVEL_UPDATED;
153 		break;
154 	}
155 
156 	range->avg_qual.level = range->max_qual.level / 2;
157 	range->avg_qual.noise = range->max_qual.noise / 2;
158 	range->avg_qual.updated = range->max_qual.updated;
159 
160 	for (i = 0; i < wdev->wiphy->n_cipher_suites; i++) {
161 		switch (wdev->wiphy->cipher_suites[i]) {
162 		case WLAN_CIPHER_SUITE_TKIP:
163 			range->enc_capa |= (IW_ENC_CAPA_CIPHER_TKIP |
164 					    IW_ENC_CAPA_WPA);
165 			break;
166 
167 		case WLAN_CIPHER_SUITE_CCMP:
168 			range->enc_capa |= (IW_ENC_CAPA_CIPHER_CCMP |
169 					    IW_ENC_CAPA_WPA2);
170 			break;
171 
172 		case WLAN_CIPHER_SUITE_WEP40:
173 			range->encoding_size[range->num_encoding_sizes++] =
174 				WLAN_KEY_LEN_WEP40;
175 			break;
176 
177 		case WLAN_CIPHER_SUITE_WEP104:
178 			range->encoding_size[range->num_encoding_sizes++] =
179 				WLAN_KEY_LEN_WEP104;
180 			break;
181 		}
182 	}
183 
184 	for (band = 0; band < NUM_NL80211_BANDS; band ++) {
185 		struct ieee80211_supported_band *sband;
186 
187 		sband = wdev->wiphy->bands[band];
188 
189 		if (!sband)
190 			continue;
191 
192 		for (i = 0; i < sband->n_channels && c < IW_MAX_FREQUENCIES; i++) {
193 			struct ieee80211_channel *chan = &sband->channels[i];
194 
195 			if (!(chan->flags & IEEE80211_CHAN_DISABLED)) {
196 				range->freq[c].i =
197 					ieee80211_frequency_to_channel(
198 						chan->center_freq);
199 				range->freq[c].m = chan->center_freq;
200 				range->freq[c].e = 6;
201 				c++;
202 			}
203 		}
204 	}
205 	range->num_channels = c;
206 	range->num_frequency = c;
207 
208 	IW_EVENT_CAPA_SET_KERNEL(range->event_capa);
209 	IW_EVENT_CAPA_SET(range->event_capa, SIOCGIWAP);
210 	IW_EVENT_CAPA_SET(range->event_capa, SIOCGIWSCAN);
211 
212 	if (wdev->wiphy->max_scan_ssids > 0)
213 		range->scan_capa |= IW_SCAN_CAPA_ESSID;
214 
215 	return 0;
216 }
217 EXPORT_WEXT_HANDLER(cfg80211_wext_giwrange);
218 
219 
220 /**
221  * cfg80211_wext_freq - get wext frequency for non-"auto"
222  * @dev: the net device
223  * @freq: the wext freq encoding
224  *
225  * Returns a frequency, or a negative error code, or 0 for auto.
226  */
227 int cfg80211_wext_freq(struct iw_freq *freq)
228 {
229 	/*
230 	 * Parse frequency - return 0 for auto and
231 	 * -EINVAL for impossible things.
232 	 */
233 	if (freq->e == 0) {
234 		enum nl80211_band band = NL80211_BAND_2GHZ;
235 		if (freq->m < 0)
236 			return 0;
237 		if (freq->m > 14)
238 			band = NL80211_BAND_5GHZ;
239 		return ieee80211_channel_to_frequency(freq->m, band);
240 	} else {
241 		int i, div = 1000000;
242 		for (i = 0; i < freq->e; i++)
243 			div /= 10;
244 		if (div <= 0)
245 			return -EINVAL;
246 		return freq->m / div;
247 	}
248 }
249 
250 int cfg80211_wext_siwrts(struct net_device *dev,
251 			 struct iw_request_info *info,
252 			 struct iw_param *rts, char *extra)
253 {
254 	struct wireless_dev *wdev = dev->ieee80211_ptr;
255 	struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
256 	u32 orts = wdev->wiphy->rts_threshold;
257 	int err;
258 
259 	if (rts->disabled || !rts->fixed)
260 		wdev->wiphy->rts_threshold = (u32) -1;
261 	else if (rts->value < 0)
262 		return -EINVAL;
263 	else
264 		wdev->wiphy->rts_threshold = rts->value;
265 
266 	err = rdev_set_wiphy_params(rdev, WIPHY_PARAM_RTS_THRESHOLD);
267 	if (err)
268 		wdev->wiphy->rts_threshold = orts;
269 
270 	return err;
271 }
272 EXPORT_WEXT_HANDLER(cfg80211_wext_siwrts);
273 
274 int cfg80211_wext_giwrts(struct net_device *dev,
275 			 struct iw_request_info *info,
276 			 struct iw_param *rts, char *extra)
277 {
278 	struct wireless_dev *wdev = dev->ieee80211_ptr;
279 
280 	rts->value = wdev->wiphy->rts_threshold;
281 	rts->disabled = rts->value == (u32) -1;
282 	rts->fixed = 1;
283 
284 	return 0;
285 }
286 EXPORT_WEXT_HANDLER(cfg80211_wext_giwrts);
287 
288 int cfg80211_wext_siwfrag(struct net_device *dev,
289 			  struct iw_request_info *info,
290 			  struct iw_param *frag, char *extra)
291 {
292 	struct wireless_dev *wdev = dev->ieee80211_ptr;
293 	struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
294 	u32 ofrag = wdev->wiphy->frag_threshold;
295 	int err;
296 
297 	if (frag->disabled || !frag->fixed)
298 		wdev->wiphy->frag_threshold = (u32) -1;
299 	else if (frag->value < 256)
300 		return -EINVAL;
301 	else {
302 		/* Fragment length must be even, so strip LSB. */
303 		wdev->wiphy->frag_threshold = frag->value & ~0x1;
304 	}
305 
306 	err = rdev_set_wiphy_params(rdev, WIPHY_PARAM_FRAG_THRESHOLD);
307 	if (err)
308 		wdev->wiphy->frag_threshold = ofrag;
309 
310 	return err;
311 }
312 EXPORT_WEXT_HANDLER(cfg80211_wext_siwfrag);
313 
314 int cfg80211_wext_giwfrag(struct net_device *dev,
315 			  struct iw_request_info *info,
316 			  struct iw_param *frag, char *extra)
317 {
318 	struct wireless_dev *wdev = dev->ieee80211_ptr;
319 
320 	frag->value = wdev->wiphy->frag_threshold;
321 	frag->disabled = frag->value == (u32) -1;
322 	frag->fixed = 1;
323 
324 	return 0;
325 }
326 EXPORT_WEXT_HANDLER(cfg80211_wext_giwfrag);
327 
328 static int cfg80211_wext_siwretry(struct net_device *dev,
329 				  struct iw_request_info *info,
330 				  struct iw_param *retry, char *extra)
331 {
332 	struct wireless_dev *wdev = dev->ieee80211_ptr;
333 	struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
334 	u32 changed = 0;
335 	u8 olong = wdev->wiphy->retry_long;
336 	u8 oshort = wdev->wiphy->retry_short;
337 	int err;
338 
339 	if (retry->disabled || retry->value < 1 || retry->value > 255 ||
340 	    (retry->flags & IW_RETRY_TYPE) != IW_RETRY_LIMIT)
341 		return -EINVAL;
342 
343 	if (retry->flags & IW_RETRY_LONG) {
344 		wdev->wiphy->retry_long = retry->value;
345 		changed |= WIPHY_PARAM_RETRY_LONG;
346 	} else if (retry->flags & IW_RETRY_SHORT) {
347 		wdev->wiphy->retry_short = retry->value;
348 		changed |= WIPHY_PARAM_RETRY_SHORT;
349 	} else {
350 		wdev->wiphy->retry_short = retry->value;
351 		wdev->wiphy->retry_long = retry->value;
352 		changed |= WIPHY_PARAM_RETRY_LONG;
353 		changed |= WIPHY_PARAM_RETRY_SHORT;
354 	}
355 
356 	if (!changed)
357 		return 0;
358 
359 	err = rdev_set_wiphy_params(rdev, changed);
360 	if (err) {
361 		wdev->wiphy->retry_short = oshort;
362 		wdev->wiphy->retry_long = olong;
363 	}
364 
365 	return err;
366 }
367 
368 int cfg80211_wext_giwretry(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 
374 	retry->disabled = 0;
375 
376 	if (retry->flags == 0 || (retry->flags & IW_RETRY_SHORT)) {
377 		/*
378 		 * First return short value, iwconfig will ask long value
379 		 * later if needed
380 		 */
381 		retry->flags |= IW_RETRY_LIMIT | IW_RETRY_SHORT;
382 		retry->value = wdev->wiphy->retry_short;
383 		if (wdev->wiphy->retry_long == wdev->wiphy->retry_short)
384 			retry->flags |= IW_RETRY_LONG;
385 
386 		return 0;
387 	}
388 
389 	if (retry->flags & IW_RETRY_LONG) {
390 		retry->flags = IW_RETRY_LIMIT | IW_RETRY_LONG;
391 		retry->value = wdev->wiphy->retry_long;
392 	}
393 
394 	return 0;
395 }
396 EXPORT_WEXT_HANDLER(cfg80211_wext_giwretry);
397 
398 static int __cfg80211_set_encryption(struct cfg80211_registered_device *rdev,
399 				     struct net_device *dev, bool pairwise,
400 				     const u8 *addr, bool remove, bool tx_key,
401 				     int idx, struct key_params *params)
402 {
403 	struct wireless_dev *wdev = dev->ieee80211_ptr;
404 	int err, i;
405 	bool rejoin = false;
406 
407 	if (pairwise && !addr)
408 		return -EINVAL;
409 
410 	/*
411 	 * In many cases we won't actually need this, but it's better
412 	 * to do it first in case the allocation fails. Don't use wext.
413 	 */
414 	if (!wdev->wext.keys) {
415 		wdev->wext.keys = kzalloc(sizeof(*wdev->wext.keys),
416 					  GFP_KERNEL);
417 		if (!wdev->wext.keys)
418 			return -ENOMEM;
419 		for (i = 0; i < CFG80211_MAX_WEP_KEYS; i++)
420 			wdev->wext.keys->params[i].key =
421 				wdev->wext.keys->data[i];
422 	}
423 
424 	if (wdev->iftype != NL80211_IFTYPE_ADHOC &&
425 	    wdev->iftype != NL80211_IFTYPE_STATION)
426 		return -EOPNOTSUPP;
427 
428 	if (params->cipher == WLAN_CIPHER_SUITE_AES_CMAC) {
429 		if (!wdev->current_bss)
430 			return -ENOLINK;
431 
432 		if (!rdev->ops->set_default_mgmt_key)
433 			return -EOPNOTSUPP;
434 
435 		if (idx < 4 || idx > 5)
436 			return -EINVAL;
437 	} else if (idx < 0 || idx > 3)
438 		return -EINVAL;
439 
440 	if (remove) {
441 		err = 0;
442 		if (wdev->current_bss) {
443 			/*
444 			 * If removing the current TX key, we will need to
445 			 * join a new IBSS without the privacy bit clear.
446 			 */
447 			if (idx == wdev->wext.default_key &&
448 			    wdev->iftype == NL80211_IFTYPE_ADHOC) {
449 				__cfg80211_leave_ibss(rdev, wdev->netdev, true);
450 				rejoin = true;
451 			}
452 
453 			if (!pairwise && addr &&
454 			    !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
455 				err = -ENOENT;
456 			else
457 				err = rdev_del_key(rdev, dev, idx, pairwise,
458 						   addr);
459 		}
460 		wdev->wext.connect.privacy = false;
461 		/*
462 		 * Applications using wireless extensions expect to be
463 		 * able to delete keys that don't exist, so allow that.
464 		 */
465 		if (err == -ENOENT)
466 			err = 0;
467 		if (!err) {
468 			if (!addr && idx < 4) {
469 				memset(wdev->wext.keys->data[idx], 0,
470 				       sizeof(wdev->wext.keys->data[idx]));
471 				wdev->wext.keys->params[idx].key_len = 0;
472 				wdev->wext.keys->params[idx].cipher = 0;
473 			}
474 			if (idx == wdev->wext.default_key)
475 				wdev->wext.default_key = -1;
476 			else if (idx == wdev->wext.default_mgmt_key)
477 				wdev->wext.default_mgmt_key = -1;
478 		}
479 
480 		if (!err && rejoin)
481 			err = cfg80211_ibss_wext_join(rdev, wdev);
482 
483 		return err;
484 	}
485 
486 	if (addr)
487 		tx_key = false;
488 
489 	if (cfg80211_validate_key_settings(rdev, params, idx, pairwise, addr))
490 		return -EINVAL;
491 
492 	err = 0;
493 	if (wdev->current_bss)
494 		err = rdev_add_key(rdev, dev, idx, pairwise, addr, params);
495 	else if (params->cipher != WLAN_CIPHER_SUITE_WEP40 &&
496 		 params->cipher != WLAN_CIPHER_SUITE_WEP104)
497 		return -EINVAL;
498 	if (err)
499 		return err;
500 
501 	/*
502 	 * We only need to store WEP keys, since they're the only keys that
503 	 * can be be set before a connection is established and persist after
504 	 * disconnecting.
505 	 */
506 	if (!addr && (params->cipher == WLAN_CIPHER_SUITE_WEP40 ||
507 		      params->cipher == WLAN_CIPHER_SUITE_WEP104)) {
508 		wdev->wext.keys->params[idx] = *params;
509 		memcpy(wdev->wext.keys->data[idx],
510 			params->key, params->key_len);
511 		wdev->wext.keys->params[idx].key =
512 			wdev->wext.keys->data[idx];
513 	}
514 
515 	if ((params->cipher == WLAN_CIPHER_SUITE_WEP40 ||
516 	     params->cipher == WLAN_CIPHER_SUITE_WEP104) &&
517 	    (tx_key || (!addr && wdev->wext.default_key == -1))) {
518 		if (wdev->current_bss) {
519 			/*
520 			 * If we are getting a new TX key from not having
521 			 * had one before we need to join a new IBSS with
522 			 * the privacy bit set.
523 			 */
524 			if (wdev->iftype == NL80211_IFTYPE_ADHOC &&
525 			    wdev->wext.default_key == -1) {
526 				__cfg80211_leave_ibss(rdev, wdev->netdev, true);
527 				rejoin = true;
528 			}
529 			err = rdev_set_default_key(rdev, dev, idx, true, true);
530 		}
531 		if (!err) {
532 			wdev->wext.default_key = idx;
533 			if (rejoin)
534 				err = cfg80211_ibss_wext_join(rdev, wdev);
535 		}
536 		return err;
537 	}
538 
539 	if (params->cipher == WLAN_CIPHER_SUITE_AES_CMAC &&
540 	    (tx_key || (!addr && wdev->wext.default_mgmt_key == -1))) {
541 		if (wdev->current_bss)
542 			err = rdev_set_default_mgmt_key(rdev, dev, idx);
543 		if (!err)
544 			wdev->wext.default_mgmt_key = idx;
545 		return err;
546 	}
547 
548 	return 0;
549 }
550 
551 static int cfg80211_set_encryption(struct cfg80211_registered_device *rdev,
552 				   struct net_device *dev, bool pairwise,
553 				   const u8 *addr, bool remove, bool tx_key,
554 				   int idx, struct key_params *params)
555 {
556 	int err;
557 
558 	wdev_lock(dev->ieee80211_ptr);
559 	err = __cfg80211_set_encryption(rdev, dev, pairwise, addr,
560 					remove, tx_key, idx, params);
561 	wdev_unlock(dev->ieee80211_ptr);
562 
563 	return err;
564 }
565 
566 static int cfg80211_wext_siwencode(struct net_device *dev,
567 				   struct iw_request_info *info,
568 				   struct iw_point *erq, char *keybuf)
569 {
570 	struct wireless_dev *wdev = dev->ieee80211_ptr;
571 	struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
572 	int idx, err;
573 	bool remove = false;
574 	struct key_params params;
575 
576 	if (wdev->iftype != NL80211_IFTYPE_STATION &&
577 	    wdev->iftype != NL80211_IFTYPE_ADHOC)
578 		return -EOPNOTSUPP;
579 
580 	/* no use -- only MFP (set_default_mgmt_key) is optional */
581 	if (!rdev->ops->del_key ||
582 	    !rdev->ops->add_key ||
583 	    !rdev->ops->set_default_key)
584 		return -EOPNOTSUPP;
585 
586 	idx = erq->flags & IW_ENCODE_INDEX;
587 	if (idx == 0) {
588 		idx = wdev->wext.default_key;
589 		if (idx < 0)
590 			idx = 0;
591 	} else if (idx < 1 || idx > 4)
592 		return -EINVAL;
593 	else
594 		idx--;
595 
596 	if (erq->flags & IW_ENCODE_DISABLED)
597 		remove = true;
598 	else if (erq->length == 0) {
599 		/* No key data - just set the default TX key index */
600 		err = 0;
601 		wdev_lock(wdev);
602 		if (wdev->current_bss)
603 			err = rdev_set_default_key(rdev, dev, idx, true,
604 						   true);
605 		if (!err)
606 			wdev->wext.default_key = idx;
607 		wdev_unlock(wdev);
608 		return err;
609 	}
610 
611 	memset(&params, 0, sizeof(params));
612 	params.key = keybuf;
613 	params.key_len = erq->length;
614 	if (erq->length == 5)
615 		params.cipher = WLAN_CIPHER_SUITE_WEP40;
616 	else if (erq->length == 13)
617 		params.cipher = WLAN_CIPHER_SUITE_WEP104;
618 	else if (!remove)
619 		return -EINVAL;
620 
621 	return cfg80211_set_encryption(rdev, dev, false, NULL, remove,
622 				       wdev->wext.default_key == -1,
623 				       idx, &params);
624 }
625 
626 static int cfg80211_wext_siwencodeext(struct net_device *dev,
627 				      struct iw_request_info *info,
628 				      struct iw_point *erq, char *extra)
629 {
630 	struct wireless_dev *wdev = dev->ieee80211_ptr;
631 	struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
632 	struct iw_encode_ext *ext = (struct iw_encode_ext *) extra;
633 	const u8 *addr;
634 	int idx;
635 	bool remove = false;
636 	struct key_params params;
637 	u32 cipher;
638 
639 	if (wdev->iftype != NL80211_IFTYPE_STATION &&
640 	    wdev->iftype != NL80211_IFTYPE_ADHOC)
641 		return -EOPNOTSUPP;
642 
643 	/* no use -- only MFP (set_default_mgmt_key) is optional */
644 	if (!rdev->ops->del_key ||
645 	    !rdev->ops->add_key ||
646 	    !rdev->ops->set_default_key)
647 		return -EOPNOTSUPP;
648 
649 	switch (ext->alg) {
650 	case IW_ENCODE_ALG_NONE:
651 		remove = true;
652 		cipher = 0;
653 		break;
654 	case IW_ENCODE_ALG_WEP:
655 		if (ext->key_len == 5)
656 			cipher = WLAN_CIPHER_SUITE_WEP40;
657 		else if (ext->key_len == 13)
658 			cipher = WLAN_CIPHER_SUITE_WEP104;
659 		else
660 			return -EINVAL;
661 		break;
662 	case IW_ENCODE_ALG_TKIP:
663 		cipher = WLAN_CIPHER_SUITE_TKIP;
664 		break;
665 	case IW_ENCODE_ALG_CCMP:
666 		cipher = WLAN_CIPHER_SUITE_CCMP;
667 		break;
668 	case IW_ENCODE_ALG_AES_CMAC:
669 		cipher = WLAN_CIPHER_SUITE_AES_CMAC;
670 		break;
671 	default:
672 		return -EOPNOTSUPP;
673 	}
674 
675 	if (erq->flags & IW_ENCODE_DISABLED)
676 		remove = true;
677 
678 	idx = erq->flags & IW_ENCODE_INDEX;
679 	if (cipher == WLAN_CIPHER_SUITE_AES_CMAC) {
680 		if (idx < 4 || idx > 5) {
681 			idx = wdev->wext.default_mgmt_key;
682 			if (idx < 0)
683 				return -EINVAL;
684 		} else
685 			idx--;
686 	} else {
687 		if (idx < 1 || idx > 4) {
688 			idx = wdev->wext.default_key;
689 			if (idx < 0)
690 				return -EINVAL;
691 		} else
692 			idx--;
693 	}
694 
695 	addr = ext->addr.sa_data;
696 	if (is_broadcast_ether_addr(addr))
697 		addr = NULL;
698 
699 	memset(&params, 0, sizeof(params));
700 	params.key = ext->key;
701 	params.key_len = ext->key_len;
702 	params.cipher = cipher;
703 
704 	if (ext->ext_flags & IW_ENCODE_EXT_RX_SEQ_VALID) {
705 		params.seq = ext->rx_seq;
706 		params.seq_len = 6;
707 	}
708 
709 	return cfg80211_set_encryption(
710 			rdev, dev,
711 			!(ext->ext_flags & IW_ENCODE_EXT_GROUP_KEY),
712 			addr, remove,
713 			ext->ext_flags & IW_ENCODE_EXT_SET_TX_KEY,
714 			idx, &params);
715 }
716 
717 static int cfg80211_wext_giwencode(struct net_device *dev,
718 				   struct iw_request_info *info,
719 				   struct iw_point *erq, char *keybuf)
720 {
721 	struct wireless_dev *wdev = dev->ieee80211_ptr;
722 	int idx;
723 
724 	if (wdev->iftype != NL80211_IFTYPE_STATION &&
725 	    wdev->iftype != NL80211_IFTYPE_ADHOC)
726 		return -EOPNOTSUPP;
727 
728 	idx = erq->flags & IW_ENCODE_INDEX;
729 	if (idx == 0) {
730 		idx = wdev->wext.default_key;
731 		if (idx < 0)
732 			idx = 0;
733 	} else if (idx < 1 || idx > 4)
734 		return -EINVAL;
735 	else
736 		idx--;
737 
738 	erq->flags = idx + 1;
739 
740 	if (!wdev->wext.keys || !wdev->wext.keys->params[idx].cipher) {
741 		erq->flags |= IW_ENCODE_DISABLED;
742 		erq->length = 0;
743 		return 0;
744 	}
745 
746 	erq->length = min_t(size_t, erq->length,
747 			    wdev->wext.keys->params[idx].key_len);
748 	memcpy(keybuf, wdev->wext.keys->params[idx].key, erq->length);
749 	erq->flags |= IW_ENCODE_ENABLED;
750 
751 	return 0;
752 }
753 
754 static int cfg80211_wext_siwfreq(struct net_device *dev,
755 				 struct iw_request_info *info,
756 				 struct iw_freq *wextfreq, char *extra)
757 {
758 	struct wireless_dev *wdev = dev->ieee80211_ptr;
759 	struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
760 	struct cfg80211_chan_def chandef = {
761 		.width = NL80211_CHAN_WIDTH_20_NOHT,
762 	};
763 	int freq;
764 
765 	switch (wdev->iftype) {
766 	case NL80211_IFTYPE_STATION:
767 		return cfg80211_mgd_wext_siwfreq(dev, info, wextfreq, extra);
768 	case NL80211_IFTYPE_ADHOC:
769 		return cfg80211_ibss_wext_siwfreq(dev, info, wextfreq, extra);
770 	case NL80211_IFTYPE_MONITOR:
771 		freq = cfg80211_wext_freq(wextfreq);
772 		if (freq < 0)
773 			return freq;
774 		if (freq == 0)
775 			return -EINVAL;
776 		chandef.center_freq1 = freq;
777 		chandef.chan = ieee80211_get_channel(&rdev->wiphy, freq);
778 		if (!chandef.chan)
779 			return -EINVAL;
780 		return cfg80211_set_monitor_channel(rdev, &chandef);
781 	case NL80211_IFTYPE_MESH_POINT:
782 		freq = cfg80211_wext_freq(wextfreq);
783 		if (freq < 0)
784 			return freq;
785 		if (freq == 0)
786 			return -EINVAL;
787 		chandef.center_freq1 = freq;
788 		chandef.chan = ieee80211_get_channel(&rdev->wiphy, freq);
789 		if (!chandef.chan)
790 			return -EINVAL;
791 		return cfg80211_set_mesh_channel(rdev, wdev, &chandef);
792 	default:
793 		return -EOPNOTSUPP;
794 	}
795 }
796 
797 static int cfg80211_wext_giwfreq(struct net_device *dev,
798 				 struct iw_request_info *info,
799 				 struct iw_freq *freq, char *extra)
800 {
801 	struct wireless_dev *wdev = dev->ieee80211_ptr;
802 	struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
803 	struct cfg80211_chan_def chandef;
804 	int ret;
805 
806 	switch (wdev->iftype) {
807 	case NL80211_IFTYPE_STATION:
808 		return cfg80211_mgd_wext_giwfreq(dev, info, freq, extra);
809 	case NL80211_IFTYPE_ADHOC:
810 		return cfg80211_ibss_wext_giwfreq(dev, info, freq, extra);
811 	case NL80211_IFTYPE_MONITOR:
812 		if (!rdev->ops->get_channel)
813 			return -EINVAL;
814 
815 		ret = rdev_get_channel(rdev, wdev, &chandef);
816 		if (ret)
817 			return ret;
818 		freq->m = chandef.chan->center_freq;
819 		freq->e = 6;
820 		return 0;
821 	default:
822 		return -EINVAL;
823 	}
824 }
825 
826 static int cfg80211_wext_siwtxpower(struct net_device *dev,
827 				    struct iw_request_info *info,
828 				    union iwreq_data *data, char *extra)
829 {
830 	struct wireless_dev *wdev = dev->ieee80211_ptr;
831 	struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
832 	enum nl80211_tx_power_setting type;
833 	int dbm = 0;
834 
835 	if ((data->txpower.flags & IW_TXPOW_TYPE) != IW_TXPOW_DBM)
836 		return -EINVAL;
837 	if (data->txpower.flags & IW_TXPOW_RANGE)
838 		return -EINVAL;
839 
840 	if (!rdev->ops->set_tx_power)
841 		return -EOPNOTSUPP;
842 
843 	/* only change when not disabling */
844 	if (!data->txpower.disabled) {
845 		rfkill_set_sw_state(rdev->rfkill, false);
846 
847 		if (data->txpower.fixed) {
848 			/*
849 			 * wext doesn't support negative values, see
850 			 * below where it's for automatic
851 			 */
852 			if (data->txpower.value < 0)
853 				return -EINVAL;
854 			dbm = data->txpower.value;
855 			type = NL80211_TX_POWER_FIXED;
856 			/* TODO: do regulatory check! */
857 		} else {
858 			/*
859 			 * Automatic power level setting, max being the value
860 			 * passed in from userland.
861 			 */
862 			if (data->txpower.value < 0) {
863 				type = NL80211_TX_POWER_AUTOMATIC;
864 			} else {
865 				dbm = data->txpower.value;
866 				type = NL80211_TX_POWER_LIMITED;
867 			}
868 		}
869 	} else {
870 		rfkill_set_sw_state(rdev->rfkill, true);
871 		schedule_work(&rdev->rfkill_sync);
872 		return 0;
873 	}
874 
875 	return rdev_set_tx_power(rdev, wdev, type, DBM_TO_MBM(dbm));
876 }
877 
878 static int cfg80211_wext_giwtxpower(struct net_device *dev,
879 				    struct iw_request_info *info,
880 				    union iwreq_data *data, char *extra)
881 {
882 	struct wireless_dev *wdev = dev->ieee80211_ptr;
883 	struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
884 	int err, val;
885 
886 	if ((data->txpower.flags & IW_TXPOW_TYPE) != IW_TXPOW_DBM)
887 		return -EINVAL;
888 	if (data->txpower.flags & IW_TXPOW_RANGE)
889 		return -EINVAL;
890 
891 	if (!rdev->ops->get_tx_power)
892 		return -EOPNOTSUPP;
893 
894 	err = rdev_get_tx_power(rdev, wdev, &val);
895 	if (err)
896 		return err;
897 
898 	/* well... oh well */
899 	data->txpower.fixed = 1;
900 	data->txpower.disabled = rfkill_blocked(rdev->rfkill);
901 	data->txpower.value = val;
902 	data->txpower.flags = IW_TXPOW_DBM;
903 
904 	return 0;
905 }
906 
907 static int cfg80211_set_auth_alg(struct wireless_dev *wdev,
908 				 s32 auth_alg)
909 {
910 	int nr_alg = 0;
911 
912 	if (!auth_alg)
913 		return -EINVAL;
914 
915 	if (auth_alg & ~(IW_AUTH_ALG_OPEN_SYSTEM |
916 			 IW_AUTH_ALG_SHARED_KEY |
917 			 IW_AUTH_ALG_LEAP))
918 		return -EINVAL;
919 
920 	if (auth_alg & IW_AUTH_ALG_OPEN_SYSTEM) {
921 		nr_alg++;
922 		wdev->wext.connect.auth_type = NL80211_AUTHTYPE_OPEN_SYSTEM;
923 	}
924 
925 	if (auth_alg & IW_AUTH_ALG_SHARED_KEY) {
926 		nr_alg++;
927 		wdev->wext.connect.auth_type = NL80211_AUTHTYPE_SHARED_KEY;
928 	}
929 
930 	if (auth_alg & IW_AUTH_ALG_LEAP) {
931 		nr_alg++;
932 		wdev->wext.connect.auth_type = NL80211_AUTHTYPE_NETWORK_EAP;
933 	}
934 
935 	if (nr_alg > 1)
936 		wdev->wext.connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
937 
938 	return 0;
939 }
940 
941 static int cfg80211_set_wpa_version(struct wireless_dev *wdev, u32 wpa_versions)
942 {
943 	if (wpa_versions & ~(IW_AUTH_WPA_VERSION_WPA |
944 			     IW_AUTH_WPA_VERSION_WPA2|
945 		             IW_AUTH_WPA_VERSION_DISABLED))
946 		return -EINVAL;
947 
948 	if ((wpa_versions & IW_AUTH_WPA_VERSION_DISABLED) &&
949 	    (wpa_versions & (IW_AUTH_WPA_VERSION_WPA|
950 			     IW_AUTH_WPA_VERSION_WPA2)))
951 		return -EINVAL;
952 
953 	if (wpa_versions & IW_AUTH_WPA_VERSION_DISABLED)
954 		wdev->wext.connect.crypto.wpa_versions &=
955 			~(NL80211_WPA_VERSION_1|NL80211_WPA_VERSION_2);
956 
957 	if (wpa_versions & IW_AUTH_WPA_VERSION_WPA)
958 		wdev->wext.connect.crypto.wpa_versions |=
959 			NL80211_WPA_VERSION_1;
960 
961 	if (wpa_versions & IW_AUTH_WPA_VERSION_WPA2)
962 		wdev->wext.connect.crypto.wpa_versions |=
963 			NL80211_WPA_VERSION_2;
964 
965 	return 0;
966 }
967 
968 static int cfg80211_set_cipher_group(struct wireless_dev *wdev, u32 cipher)
969 {
970 	if (cipher & IW_AUTH_CIPHER_WEP40)
971 		wdev->wext.connect.crypto.cipher_group =
972 			WLAN_CIPHER_SUITE_WEP40;
973 	else if (cipher & IW_AUTH_CIPHER_WEP104)
974 		wdev->wext.connect.crypto.cipher_group =
975 			WLAN_CIPHER_SUITE_WEP104;
976 	else if (cipher & IW_AUTH_CIPHER_TKIP)
977 		wdev->wext.connect.crypto.cipher_group =
978 			WLAN_CIPHER_SUITE_TKIP;
979 	else if (cipher & IW_AUTH_CIPHER_CCMP)
980 		wdev->wext.connect.crypto.cipher_group =
981 			WLAN_CIPHER_SUITE_CCMP;
982 	else if (cipher & IW_AUTH_CIPHER_AES_CMAC)
983 		wdev->wext.connect.crypto.cipher_group =
984 			WLAN_CIPHER_SUITE_AES_CMAC;
985 	else if (cipher & IW_AUTH_CIPHER_NONE)
986 		wdev->wext.connect.crypto.cipher_group = 0;
987 	else
988 		return -EINVAL;
989 
990 	return 0;
991 }
992 
993 static int cfg80211_set_cipher_pairwise(struct wireless_dev *wdev, u32 cipher)
994 {
995 	int nr_ciphers = 0;
996 	u32 *ciphers_pairwise = wdev->wext.connect.crypto.ciphers_pairwise;
997 
998 	if (cipher & IW_AUTH_CIPHER_WEP40) {
999 		ciphers_pairwise[nr_ciphers] = WLAN_CIPHER_SUITE_WEP40;
1000 		nr_ciphers++;
1001 	}
1002 
1003 	if (cipher & IW_AUTH_CIPHER_WEP104) {
1004 		ciphers_pairwise[nr_ciphers] = WLAN_CIPHER_SUITE_WEP104;
1005 		nr_ciphers++;
1006 	}
1007 
1008 	if (cipher & IW_AUTH_CIPHER_TKIP) {
1009 		ciphers_pairwise[nr_ciphers] = WLAN_CIPHER_SUITE_TKIP;
1010 		nr_ciphers++;
1011 	}
1012 
1013 	if (cipher & IW_AUTH_CIPHER_CCMP) {
1014 		ciphers_pairwise[nr_ciphers] = WLAN_CIPHER_SUITE_CCMP;
1015 		nr_ciphers++;
1016 	}
1017 
1018 	if (cipher & IW_AUTH_CIPHER_AES_CMAC) {
1019 		ciphers_pairwise[nr_ciphers] = WLAN_CIPHER_SUITE_AES_CMAC;
1020 		nr_ciphers++;
1021 	}
1022 
1023 	BUILD_BUG_ON(NL80211_MAX_NR_CIPHER_SUITES < 5);
1024 
1025 	wdev->wext.connect.crypto.n_ciphers_pairwise = nr_ciphers;
1026 
1027 	return 0;
1028 }
1029 
1030 
1031 static int cfg80211_set_key_mgt(struct wireless_dev *wdev, u32 key_mgt)
1032 {
1033 	int nr_akm_suites = 0;
1034 
1035 	if (key_mgt & ~(IW_AUTH_KEY_MGMT_802_1X |
1036 			IW_AUTH_KEY_MGMT_PSK))
1037 		return -EINVAL;
1038 
1039 	if (key_mgt & IW_AUTH_KEY_MGMT_802_1X) {
1040 		wdev->wext.connect.crypto.akm_suites[nr_akm_suites] =
1041 			WLAN_AKM_SUITE_8021X;
1042 		nr_akm_suites++;
1043 	}
1044 
1045 	if (key_mgt & IW_AUTH_KEY_MGMT_PSK) {
1046 		wdev->wext.connect.crypto.akm_suites[nr_akm_suites] =
1047 			WLAN_AKM_SUITE_PSK;
1048 		nr_akm_suites++;
1049 	}
1050 
1051 	wdev->wext.connect.crypto.n_akm_suites = nr_akm_suites;
1052 
1053 	return 0;
1054 }
1055 
1056 static int cfg80211_wext_siwauth(struct net_device *dev,
1057 				 struct iw_request_info *info,
1058 				 struct iw_param *data, char *extra)
1059 {
1060 	struct wireless_dev *wdev = dev->ieee80211_ptr;
1061 
1062 	if (wdev->iftype != NL80211_IFTYPE_STATION)
1063 		return -EOPNOTSUPP;
1064 
1065 	switch (data->flags & IW_AUTH_INDEX) {
1066 	case IW_AUTH_PRIVACY_INVOKED:
1067 		wdev->wext.connect.privacy = data->value;
1068 		return 0;
1069 	case IW_AUTH_WPA_VERSION:
1070 		return cfg80211_set_wpa_version(wdev, data->value);
1071 	case IW_AUTH_CIPHER_GROUP:
1072 		return cfg80211_set_cipher_group(wdev, data->value);
1073 	case IW_AUTH_KEY_MGMT:
1074 		return cfg80211_set_key_mgt(wdev, data->value);
1075 	case IW_AUTH_CIPHER_PAIRWISE:
1076 		return cfg80211_set_cipher_pairwise(wdev, data->value);
1077 	case IW_AUTH_80211_AUTH_ALG:
1078 		return cfg80211_set_auth_alg(wdev, data->value);
1079 	case IW_AUTH_WPA_ENABLED:
1080 	case IW_AUTH_RX_UNENCRYPTED_EAPOL:
1081 	case IW_AUTH_DROP_UNENCRYPTED:
1082 	case IW_AUTH_MFP:
1083 		return 0;
1084 	default:
1085 		return -EOPNOTSUPP;
1086 	}
1087 }
1088 
1089 static int cfg80211_wext_giwauth(struct net_device *dev,
1090 				 struct iw_request_info *info,
1091 				 struct iw_param *data, char *extra)
1092 {
1093 	/* XXX: what do we need? */
1094 
1095 	return -EOPNOTSUPP;
1096 }
1097 
1098 static int cfg80211_wext_siwpower(struct net_device *dev,
1099 				  struct iw_request_info *info,
1100 				  struct iw_param *wrq, char *extra)
1101 {
1102 	struct wireless_dev *wdev = dev->ieee80211_ptr;
1103 	struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
1104 	bool ps = wdev->ps;
1105 	int timeout = wdev->ps_timeout;
1106 	int err;
1107 
1108 	if (wdev->iftype != NL80211_IFTYPE_STATION)
1109 		return -EINVAL;
1110 
1111 	if (!rdev->ops->set_power_mgmt)
1112 		return -EOPNOTSUPP;
1113 
1114 	if (wrq->disabled) {
1115 		ps = false;
1116 	} else {
1117 		switch (wrq->flags & IW_POWER_MODE) {
1118 		case IW_POWER_ON:       /* If not specified */
1119 		case IW_POWER_MODE:     /* If set all mask */
1120 		case IW_POWER_ALL_R:    /* If explicitely state all */
1121 			ps = true;
1122 			break;
1123 		default:                /* Otherwise we ignore */
1124 			return -EINVAL;
1125 		}
1126 
1127 		if (wrq->flags & ~(IW_POWER_MODE | IW_POWER_TIMEOUT))
1128 			return -EINVAL;
1129 
1130 		if (wrq->flags & IW_POWER_TIMEOUT)
1131 			timeout = wrq->value / 1000;
1132 	}
1133 
1134 	err = rdev_set_power_mgmt(rdev, dev, ps, timeout);
1135 	if (err)
1136 		return err;
1137 
1138 	wdev->ps = ps;
1139 	wdev->ps_timeout = timeout;
1140 
1141 	return 0;
1142 
1143 }
1144 
1145 static int cfg80211_wext_giwpower(struct net_device *dev,
1146 				  struct iw_request_info *info,
1147 				  struct iw_param *wrq, char *extra)
1148 {
1149 	struct wireless_dev *wdev = dev->ieee80211_ptr;
1150 
1151 	wrq->disabled = !wdev->ps;
1152 
1153 	return 0;
1154 }
1155 
1156 static int cfg80211_wds_wext_siwap(struct net_device *dev,
1157 				   struct iw_request_info *info,
1158 				   struct sockaddr *addr, char *extra)
1159 {
1160 	struct wireless_dev *wdev = dev->ieee80211_ptr;
1161 	struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
1162 	int err;
1163 
1164 	if (WARN_ON(wdev->iftype != NL80211_IFTYPE_WDS))
1165 		return -EINVAL;
1166 
1167 	if (addr->sa_family != ARPHRD_ETHER)
1168 		return -EINVAL;
1169 
1170 	if (netif_running(dev))
1171 		return -EBUSY;
1172 
1173 	if (!rdev->ops->set_wds_peer)
1174 		return -EOPNOTSUPP;
1175 
1176 	err = rdev_set_wds_peer(rdev, dev, (u8 *)&addr->sa_data);
1177 	if (err)
1178 		return err;
1179 
1180 	memcpy(&wdev->wext.bssid, (u8 *) &addr->sa_data, ETH_ALEN);
1181 
1182 	return 0;
1183 }
1184 
1185 static int cfg80211_wds_wext_giwap(struct net_device *dev,
1186 				   struct iw_request_info *info,
1187 				   struct sockaddr *addr, char *extra)
1188 {
1189 	struct wireless_dev *wdev = dev->ieee80211_ptr;
1190 
1191 	if (WARN_ON(wdev->iftype != NL80211_IFTYPE_WDS))
1192 		return -EINVAL;
1193 
1194 	addr->sa_family = ARPHRD_ETHER;
1195 	memcpy(&addr->sa_data, wdev->wext.bssid, ETH_ALEN);
1196 
1197 	return 0;
1198 }
1199 
1200 static int cfg80211_wext_siwrate(struct net_device *dev,
1201 				 struct iw_request_info *info,
1202 				 struct iw_param *rate, char *extra)
1203 {
1204 	struct wireless_dev *wdev = dev->ieee80211_ptr;
1205 	struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
1206 	struct cfg80211_bitrate_mask mask;
1207 	u32 fixed, maxrate;
1208 	struct ieee80211_supported_band *sband;
1209 	int band, ridx;
1210 	bool match = false;
1211 
1212 	if (!rdev->ops->set_bitrate_mask)
1213 		return -EOPNOTSUPP;
1214 
1215 	memset(&mask, 0, sizeof(mask));
1216 	fixed = 0;
1217 	maxrate = (u32)-1;
1218 
1219 	if (rate->value < 0) {
1220 		/* nothing */
1221 	} else if (rate->fixed) {
1222 		fixed = rate->value / 100000;
1223 	} else {
1224 		maxrate = rate->value / 100000;
1225 	}
1226 
1227 	for (band = 0; band < NUM_NL80211_BANDS; band++) {
1228 		sband = wdev->wiphy->bands[band];
1229 		if (sband == NULL)
1230 			continue;
1231 		for (ridx = 0; ridx < sband->n_bitrates; ridx++) {
1232 			struct ieee80211_rate *srate = &sband->bitrates[ridx];
1233 			if (fixed == srate->bitrate) {
1234 				mask.control[band].legacy = 1 << ridx;
1235 				match = true;
1236 				break;
1237 			}
1238 			if (srate->bitrate <= maxrate) {
1239 				mask.control[band].legacy |= 1 << ridx;
1240 				match = true;
1241 			}
1242 		}
1243 	}
1244 
1245 	if (!match)
1246 		return -EINVAL;
1247 
1248 	return rdev_set_bitrate_mask(rdev, dev, NULL, &mask);
1249 }
1250 
1251 static int cfg80211_wext_giwrate(struct net_device *dev,
1252 				 struct iw_request_info *info,
1253 				 struct iw_param *rate, char *extra)
1254 {
1255 	struct wireless_dev *wdev = dev->ieee80211_ptr;
1256 	struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
1257 	/* we are under RTNL - globally locked - so can use a static struct */
1258 	static struct station_info sinfo;
1259 	u8 addr[ETH_ALEN];
1260 	int err;
1261 
1262 	if (wdev->iftype != NL80211_IFTYPE_STATION)
1263 		return -EOPNOTSUPP;
1264 
1265 	if (!rdev->ops->get_station)
1266 		return -EOPNOTSUPP;
1267 
1268 	err = 0;
1269 	wdev_lock(wdev);
1270 	if (wdev->current_bss)
1271 		memcpy(addr, wdev->current_bss->pub.bssid, ETH_ALEN);
1272 	else
1273 		err = -EOPNOTSUPP;
1274 	wdev_unlock(wdev);
1275 	if (err)
1276 		return err;
1277 
1278 	err = rdev_get_station(rdev, dev, addr, &sinfo);
1279 	if (err)
1280 		return err;
1281 
1282 	if (!(sinfo.filled & BIT(NL80211_STA_INFO_TX_BITRATE)))
1283 		return -EOPNOTSUPP;
1284 
1285 	rate->value = 100000 * cfg80211_calculate_bitrate(&sinfo.txrate);
1286 
1287 	return 0;
1288 }
1289 
1290 /* Get wireless statistics.  Called by /proc/net/wireless and by SIOCGIWSTATS */
1291 static struct iw_statistics *cfg80211_wireless_stats(struct net_device *dev)
1292 {
1293 	struct wireless_dev *wdev = dev->ieee80211_ptr;
1294 	struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
1295 	/* we are under RTNL - globally locked - so can use static structs */
1296 	static struct iw_statistics wstats;
1297 	static struct station_info sinfo;
1298 	u8 bssid[ETH_ALEN];
1299 
1300 	if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION)
1301 		return NULL;
1302 
1303 	if (!rdev->ops->get_station)
1304 		return NULL;
1305 
1306 	/* Grab BSSID of current BSS, if any */
1307 	wdev_lock(wdev);
1308 	if (!wdev->current_bss) {
1309 		wdev_unlock(wdev);
1310 		return NULL;
1311 	}
1312 	memcpy(bssid, wdev->current_bss->pub.bssid, ETH_ALEN);
1313 	wdev_unlock(wdev);
1314 
1315 	memset(&sinfo, 0, sizeof(sinfo));
1316 
1317 	if (rdev_get_station(rdev, dev, bssid, &sinfo))
1318 		return NULL;
1319 
1320 	memset(&wstats, 0, sizeof(wstats));
1321 
1322 	switch (rdev->wiphy.signal_type) {
1323 	case CFG80211_SIGNAL_TYPE_MBM:
1324 		if (sinfo.filled & BIT(NL80211_STA_INFO_SIGNAL)) {
1325 			int sig = sinfo.signal;
1326 			wstats.qual.updated |= IW_QUAL_LEVEL_UPDATED;
1327 			wstats.qual.updated |= IW_QUAL_QUAL_UPDATED;
1328 			wstats.qual.updated |= IW_QUAL_DBM;
1329 			wstats.qual.level = sig;
1330 			if (sig < -110)
1331 				sig = -110;
1332 			else if (sig > -40)
1333 				sig = -40;
1334 			wstats.qual.qual = sig + 110;
1335 			break;
1336 		}
1337 	case CFG80211_SIGNAL_TYPE_UNSPEC:
1338 		if (sinfo.filled & BIT(NL80211_STA_INFO_SIGNAL)) {
1339 			wstats.qual.updated |= IW_QUAL_LEVEL_UPDATED;
1340 			wstats.qual.updated |= IW_QUAL_QUAL_UPDATED;
1341 			wstats.qual.level = sinfo.signal;
1342 			wstats.qual.qual = sinfo.signal;
1343 			break;
1344 		}
1345 	default:
1346 		wstats.qual.updated |= IW_QUAL_LEVEL_INVALID;
1347 		wstats.qual.updated |= IW_QUAL_QUAL_INVALID;
1348 	}
1349 
1350 	wstats.qual.updated |= IW_QUAL_NOISE_INVALID;
1351 	if (sinfo.filled & BIT(NL80211_STA_INFO_RX_DROP_MISC))
1352 		wstats.discard.misc = sinfo.rx_dropped_misc;
1353 	if (sinfo.filled & BIT(NL80211_STA_INFO_TX_FAILED))
1354 		wstats.discard.retries = sinfo.tx_failed;
1355 
1356 	return &wstats;
1357 }
1358 
1359 static int cfg80211_wext_siwap(struct net_device *dev,
1360 			       struct iw_request_info *info,
1361 			       struct sockaddr *ap_addr, char *extra)
1362 {
1363 	struct wireless_dev *wdev = dev->ieee80211_ptr;
1364 
1365 	switch (wdev->iftype) {
1366 	case NL80211_IFTYPE_ADHOC:
1367 		return cfg80211_ibss_wext_siwap(dev, info, ap_addr, extra);
1368 	case NL80211_IFTYPE_STATION:
1369 		return cfg80211_mgd_wext_siwap(dev, info, ap_addr, extra);
1370 	case NL80211_IFTYPE_WDS:
1371 		return cfg80211_wds_wext_siwap(dev, info, ap_addr, extra);
1372 	default:
1373 		return -EOPNOTSUPP;
1374 	}
1375 }
1376 
1377 static int cfg80211_wext_giwap(struct net_device *dev,
1378 			       struct iw_request_info *info,
1379 			       struct sockaddr *ap_addr, char *extra)
1380 {
1381 	struct wireless_dev *wdev = dev->ieee80211_ptr;
1382 
1383 	switch (wdev->iftype) {
1384 	case NL80211_IFTYPE_ADHOC:
1385 		return cfg80211_ibss_wext_giwap(dev, info, ap_addr, extra);
1386 	case NL80211_IFTYPE_STATION:
1387 		return cfg80211_mgd_wext_giwap(dev, info, ap_addr, extra);
1388 	case NL80211_IFTYPE_WDS:
1389 		return cfg80211_wds_wext_giwap(dev, info, ap_addr, extra);
1390 	default:
1391 		return -EOPNOTSUPP;
1392 	}
1393 }
1394 
1395 static int cfg80211_wext_siwessid(struct net_device *dev,
1396 				  struct iw_request_info *info,
1397 				  struct iw_point *data, char *ssid)
1398 {
1399 	struct wireless_dev *wdev = dev->ieee80211_ptr;
1400 
1401 	switch (wdev->iftype) {
1402 	case NL80211_IFTYPE_ADHOC:
1403 		return cfg80211_ibss_wext_siwessid(dev, info, data, ssid);
1404 	case NL80211_IFTYPE_STATION:
1405 		return cfg80211_mgd_wext_siwessid(dev, info, data, ssid);
1406 	default:
1407 		return -EOPNOTSUPP;
1408 	}
1409 }
1410 
1411 static int cfg80211_wext_giwessid(struct net_device *dev,
1412 				  struct iw_request_info *info,
1413 				  struct iw_point *data, char *ssid)
1414 {
1415 	struct wireless_dev *wdev = dev->ieee80211_ptr;
1416 
1417 	data->flags = 0;
1418 	data->length = 0;
1419 
1420 	switch (wdev->iftype) {
1421 	case NL80211_IFTYPE_ADHOC:
1422 		return cfg80211_ibss_wext_giwessid(dev, info, data, ssid);
1423 	case NL80211_IFTYPE_STATION:
1424 		return cfg80211_mgd_wext_giwessid(dev, info, data, ssid);
1425 	default:
1426 		return -EOPNOTSUPP;
1427 	}
1428 }
1429 
1430 static int cfg80211_wext_siwpmksa(struct net_device *dev,
1431 				  struct iw_request_info *info,
1432 				  struct iw_point *data, char *extra)
1433 {
1434 	struct wireless_dev *wdev = dev->ieee80211_ptr;
1435 	struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
1436 	struct cfg80211_pmksa cfg_pmksa;
1437 	struct iw_pmksa *pmksa = (struct iw_pmksa *)extra;
1438 
1439 	memset(&cfg_pmksa, 0, sizeof(struct cfg80211_pmksa));
1440 
1441 	if (wdev->iftype != NL80211_IFTYPE_STATION)
1442 		return -EINVAL;
1443 
1444 	cfg_pmksa.bssid = pmksa->bssid.sa_data;
1445 	cfg_pmksa.pmkid = pmksa->pmkid;
1446 
1447 	switch (pmksa->cmd) {
1448 	case IW_PMKSA_ADD:
1449 		if (!rdev->ops->set_pmksa)
1450 			return -EOPNOTSUPP;
1451 
1452 		return rdev_set_pmksa(rdev, dev, &cfg_pmksa);
1453 
1454 	case IW_PMKSA_REMOVE:
1455 		if (!rdev->ops->del_pmksa)
1456 			return -EOPNOTSUPP;
1457 
1458 		return rdev_del_pmksa(rdev, dev, &cfg_pmksa);
1459 
1460 	case IW_PMKSA_FLUSH:
1461 		if (!rdev->ops->flush_pmksa)
1462 			return -EOPNOTSUPP;
1463 
1464 		return rdev_flush_pmksa(rdev, dev);
1465 
1466 	default:
1467 		return -EOPNOTSUPP;
1468 	}
1469 }
1470 
1471 static const iw_handler cfg80211_handlers[] = {
1472 	[IW_IOCTL_IDX(SIOCGIWNAME)]	= (iw_handler) cfg80211_wext_giwname,
1473 	[IW_IOCTL_IDX(SIOCSIWFREQ)]	= (iw_handler) cfg80211_wext_siwfreq,
1474 	[IW_IOCTL_IDX(SIOCGIWFREQ)]	= (iw_handler) cfg80211_wext_giwfreq,
1475 	[IW_IOCTL_IDX(SIOCSIWMODE)]	= (iw_handler) cfg80211_wext_siwmode,
1476 	[IW_IOCTL_IDX(SIOCGIWMODE)]	= (iw_handler) cfg80211_wext_giwmode,
1477 	[IW_IOCTL_IDX(SIOCGIWRANGE)]	= (iw_handler) cfg80211_wext_giwrange,
1478 	[IW_IOCTL_IDX(SIOCSIWAP)]	= (iw_handler) cfg80211_wext_siwap,
1479 	[IW_IOCTL_IDX(SIOCGIWAP)]	= (iw_handler) cfg80211_wext_giwap,
1480 	[IW_IOCTL_IDX(SIOCSIWMLME)]	= (iw_handler) cfg80211_wext_siwmlme,
1481 	[IW_IOCTL_IDX(SIOCSIWSCAN)]	= (iw_handler) cfg80211_wext_siwscan,
1482 	[IW_IOCTL_IDX(SIOCGIWSCAN)]	= (iw_handler) cfg80211_wext_giwscan,
1483 	[IW_IOCTL_IDX(SIOCSIWESSID)]	= (iw_handler) cfg80211_wext_siwessid,
1484 	[IW_IOCTL_IDX(SIOCGIWESSID)]	= (iw_handler) cfg80211_wext_giwessid,
1485 	[IW_IOCTL_IDX(SIOCSIWRATE)]	= (iw_handler) cfg80211_wext_siwrate,
1486 	[IW_IOCTL_IDX(SIOCGIWRATE)]	= (iw_handler) cfg80211_wext_giwrate,
1487 	[IW_IOCTL_IDX(SIOCSIWRTS)]	= (iw_handler) cfg80211_wext_siwrts,
1488 	[IW_IOCTL_IDX(SIOCGIWRTS)]	= (iw_handler) cfg80211_wext_giwrts,
1489 	[IW_IOCTL_IDX(SIOCSIWFRAG)]	= (iw_handler) cfg80211_wext_siwfrag,
1490 	[IW_IOCTL_IDX(SIOCGIWFRAG)]	= (iw_handler) cfg80211_wext_giwfrag,
1491 	[IW_IOCTL_IDX(SIOCSIWTXPOW)]	= (iw_handler) cfg80211_wext_siwtxpower,
1492 	[IW_IOCTL_IDX(SIOCGIWTXPOW)]	= (iw_handler) cfg80211_wext_giwtxpower,
1493 	[IW_IOCTL_IDX(SIOCSIWRETRY)]	= (iw_handler) cfg80211_wext_siwretry,
1494 	[IW_IOCTL_IDX(SIOCGIWRETRY)]	= (iw_handler) cfg80211_wext_giwretry,
1495 	[IW_IOCTL_IDX(SIOCSIWENCODE)]	= (iw_handler) cfg80211_wext_siwencode,
1496 	[IW_IOCTL_IDX(SIOCGIWENCODE)]	= (iw_handler) cfg80211_wext_giwencode,
1497 	[IW_IOCTL_IDX(SIOCSIWPOWER)]	= (iw_handler) cfg80211_wext_siwpower,
1498 	[IW_IOCTL_IDX(SIOCGIWPOWER)]	= (iw_handler) cfg80211_wext_giwpower,
1499 	[IW_IOCTL_IDX(SIOCSIWGENIE)]	= (iw_handler) cfg80211_wext_siwgenie,
1500 	[IW_IOCTL_IDX(SIOCSIWAUTH)]	= (iw_handler) cfg80211_wext_siwauth,
1501 	[IW_IOCTL_IDX(SIOCGIWAUTH)]	= (iw_handler) cfg80211_wext_giwauth,
1502 	[IW_IOCTL_IDX(SIOCSIWENCODEEXT)]= (iw_handler) cfg80211_wext_siwencodeext,
1503 	[IW_IOCTL_IDX(SIOCSIWPMKSA)]	= (iw_handler) cfg80211_wext_siwpmksa,
1504 };
1505 
1506 const struct iw_handler_def cfg80211_wext_handler = {
1507 	.num_standard		= ARRAY_SIZE(cfg80211_handlers),
1508 	.standard		= cfg80211_handlers,
1509 	.get_wireless_stats = cfg80211_wireless_stats,
1510 };
1511