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/net/wireless/wext-compat.c

http://github.com/mirrors/linux
C | 1515 lines | 1214 code | 231 blank | 70 comment | 297 complexity | a8bc1358d57d0bfe472a68dec677897d MD5 | raw file
   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 * Copyright (C) 2019 Intel Corporation
  11 */
  12
  13#include <linux/export.h>
  14#include <linux/wireless.h>
  15#include <linux/nl80211.h>
  16#include <linux/if_arp.h>
  17#include <linux/etherdevice.h>
  18#include <linux/slab.h>
  19#include <net/iw_handler.h>
  20#include <net/cfg80211.h>
  21#include <net/cfg80211-wext.h>
  22#include "wext-compat.h"
  23#include "core.h"
  24#include "rdev-ops.h"
  25
  26int cfg80211_wext_giwname(struct net_device *dev,
  27			  struct iw_request_info *info,
  28			  char *name, char *extra)
  29{
  30	strcpy(name, "IEEE 802.11");
  31	return 0;
  32}
  33EXPORT_WEXT_HANDLER(cfg80211_wext_giwname);
  34
  35int cfg80211_wext_siwmode(struct net_device *dev, struct iw_request_info *info,
  36			  u32 *mode, char *extra)
  37{
  38	struct wireless_dev *wdev = dev->ieee80211_ptr;
  39	struct cfg80211_registered_device *rdev;
  40	struct vif_params vifparams;
  41	enum nl80211_iftype type;
  42
  43	rdev = wiphy_to_rdev(wdev->wiphy);
  44
  45	switch (*mode) {
  46	case IW_MODE_INFRA:
  47		type = NL80211_IFTYPE_STATION;
  48		break;
  49	case IW_MODE_ADHOC:
  50		type = NL80211_IFTYPE_ADHOC;
  51		break;
  52	case IW_MODE_REPEAT:
  53		type = NL80211_IFTYPE_WDS;
  54		break;
  55	case IW_MODE_MONITOR:
  56		type = NL80211_IFTYPE_MONITOR;
  57		break;
  58	default:
  59		return -EINVAL;
  60	}
  61
  62	if (type == wdev->iftype)
  63		return 0;
  64
  65	memset(&vifparams, 0, sizeof(vifparams));
  66
  67	return cfg80211_change_iface(rdev, dev, type, &vifparams);
  68}
  69EXPORT_WEXT_HANDLER(cfg80211_wext_siwmode);
  70
  71int cfg80211_wext_giwmode(struct net_device *dev, struct iw_request_info *info,
  72			  u32 *mode, char *extra)
  73{
  74	struct wireless_dev *wdev = dev->ieee80211_ptr;
  75
  76	if (!wdev)
  77		return -EOPNOTSUPP;
  78
  79	switch (wdev->iftype) {
  80	case NL80211_IFTYPE_AP:
  81		*mode = IW_MODE_MASTER;
  82		break;
  83	case NL80211_IFTYPE_STATION:
  84		*mode = IW_MODE_INFRA;
  85		break;
  86	case NL80211_IFTYPE_ADHOC:
  87		*mode = IW_MODE_ADHOC;
  88		break;
  89	case NL80211_IFTYPE_MONITOR:
  90		*mode = IW_MODE_MONITOR;
  91		break;
  92	case NL80211_IFTYPE_WDS:
  93		*mode = IW_MODE_REPEAT;
  94		break;
  95	case NL80211_IFTYPE_AP_VLAN:
  96		*mode = IW_MODE_SECOND;		/* FIXME */
  97		break;
  98	default:
  99		*mode = IW_MODE_AUTO;
 100		break;
 101	}
 102	return 0;
 103}
 104EXPORT_WEXT_HANDLER(cfg80211_wext_giwmode);
 105
 106
 107int cfg80211_wext_giwrange(struct net_device *dev,
 108			   struct iw_request_info *info,
 109			   struct iw_point *data, char *extra)
 110{
 111	struct wireless_dev *wdev = dev->ieee80211_ptr;
 112	struct iw_range *range = (struct iw_range *) extra;
 113	enum nl80211_band band;
 114	int i, c = 0;
 115
 116	if (!wdev)
 117		return -EOPNOTSUPP;
 118
 119	data->length = sizeof(struct iw_range);
 120	memset(range, 0, sizeof(struct iw_range));
 121
 122	range->we_version_compiled = WIRELESS_EXT;
 123	range->we_version_source = 21;
 124	range->retry_capa = IW_RETRY_LIMIT;
 125	range->retry_flags = IW_RETRY_LIMIT;
 126	range->min_retry = 0;
 127	range->max_retry = 255;
 128	range->min_rts = 0;
 129	range->max_rts = 2347;
 130	range->min_frag = 256;
 131	range->max_frag = 2346;
 132
 133	range->max_encoding_tokens = 4;
 134
 135	range->max_qual.updated = IW_QUAL_NOISE_INVALID;
 136
 137	switch (wdev->wiphy->signal_type) {
 138	case CFG80211_SIGNAL_TYPE_NONE:
 139		break;
 140	case CFG80211_SIGNAL_TYPE_MBM:
 141		range->max_qual.level = (u8)-110;
 142		range->max_qual.qual = 70;
 143		range->avg_qual.qual = 35;
 144		range->max_qual.updated |= IW_QUAL_DBM;
 145		range->max_qual.updated |= IW_QUAL_QUAL_UPDATED;
 146		range->max_qual.updated |= IW_QUAL_LEVEL_UPDATED;
 147		break;
 148	case CFG80211_SIGNAL_TYPE_UNSPEC:
 149		range->max_qual.level = 100;
 150		range->max_qual.qual = 100;
 151		range->avg_qual.qual = 50;
 152		range->max_qual.updated |= IW_QUAL_QUAL_UPDATED;
 153		range->max_qual.updated |= IW_QUAL_LEVEL_UPDATED;
 154		break;
 155	}
 156
 157	range->avg_qual.level = range->max_qual.level / 2;
 158	range->avg_qual.noise = range->max_qual.noise / 2;
 159	range->avg_qual.updated = range->max_qual.updated;
 160
 161	for (i = 0; i < wdev->wiphy->n_cipher_suites; i++) {
 162		switch (wdev->wiphy->cipher_suites[i]) {
 163		case WLAN_CIPHER_SUITE_TKIP:
 164			range->enc_capa |= (IW_ENC_CAPA_CIPHER_TKIP |
 165					    IW_ENC_CAPA_WPA);
 166			break;
 167
 168		case WLAN_CIPHER_SUITE_CCMP:
 169			range->enc_capa |= (IW_ENC_CAPA_CIPHER_CCMP |
 170					    IW_ENC_CAPA_WPA2);
 171			break;
 172
 173		case WLAN_CIPHER_SUITE_WEP40:
 174			range->encoding_size[range->num_encoding_sizes++] =
 175				WLAN_KEY_LEN_WEP40;
 176			break;
 177
 178		case WLAN_CIPHER_SUITE_WEP104:
 179			range->encoding_size[range->num_encoding_sizes++] =
 180				WLAN_KEY_LEN_WEP104;
 181			break;
 182		}
 183	}
 184
 185	for (band = 0; band < NUM_NL80211_BANDS; band ++) {
 186		struct ieee80211_supported_band *sband;
 187
 188		sband = wdev->wiphy->bands[band];
 189
 190		if (!sband)
 191			continue;
 192
 193		for (i = 0; i < sband->n_channels && c < IW_MAX_FREQUENCIES; i++) {
 194			struct ieee80211_channel *chan = &sband->channels[i];
 195
 196			if (!(chan->flags & IEEE80211_CHAN_DISABLED)) {
 197				range->freq[c].i =
 198					ieee80211_frequency_to_channel(
 199						chan->center_freq);
 200				range->freq[c].m = chan->center_freq;
 201				range->freq[c].e = 6;
 202				c++;
 203			}
 204		}
 205	}
 206	range->num_channels = c;
 207	range->num_frequency = c;
 208
 209	IW_EVENT_CAPA_SET_KERNEL(range->event_capa);
 210	IW_EVENT_CAPA_SET(range->event_capa, SIOCGIWAP);
 211	IW_EVENT_CAPA_SET(range->event_capa, SIOCGIWSCAN);
 212
 213	if (wdev->wiphy->max_scan_ssids > 0)
 214		range->scan_capa |= IW_SCAN_CAPA_ESSID;
 215
 216	return 0;
 217}
 218EXPORT_WEXT_HANDLER(cfg80211_wext_giwrange);
 219
 220
 221/**
 222 * cfg80211_wext_freq - get wext frequency for non-"auto"
 223 * @dev: the net device
 224 * @freq: the wext freq encoding
 225 *
 226 * Returns a frequency, or a negative error code, or 0 for auto.
 227 */
 228int cfg80211_wext_freq(struct iw_freq *freq)
 229{
 230	/*
 231	 * Parse frequency - return 0 for auto and
 232	 * -EINVAL for impossible things.
 233	 */
 234	if (freq->e == 0) {
 235		enum nl80211_band band = NL80211_BAND_2GHZ;
 236		if (freq->m < 0)
 237			return 0;
 238		if (freq->m > 14)
 239			band = NL80211_BAND_5GHZ;
 240		return ieee80211_channel_to_frequency(freq->m, band);
 241	} else {
 242		int i, div = 1000000;
 243		for (i = 0; i < freq->e; i++)
 244			div /= 10;
 245		if (div <= 0)
 246			return -EINVAL;
 247		return freq->m / div;
 248	}
 249}
 250
 251int cfg80211_wext_siwrts(struct net_device *dev,
 252			 struct iw_request_info *info,
 253			 struct iw_param *rts, char *extra)
 254{
 255	struct wireless_dev *wdev = dev->ieee80211_ptr;
 256	struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
 257	u32 orts = wdev->wiphy->rts_threshold;
 258	int err;
 259
 260	if (rts->disabled || !rts->fixed)
 261		wdev->wiphy->rts_threshold = (u32) -1;
 262	else if (rts->value < 0)
 263		return -EINVAL;
 264	else
 265		wdev->wiphy->rts_threshold = rts->value;
 266
 267	err = rdev_set_wiphy_params(rdev, WIPHY_PARAM_RTS_THRESHOLD);
 268	if (err)
 269		wdev->wiphy->rts_threshold = orts;
 270
 271	return err;
 272}
 273EXPORT_WEXT_HANDLER(cfg80211_wext_siwrts);
 274
 275int cfg80211_wext_giwrts(struct net_device *dev,
 276			 struct iw_request_info *info,
 277			 struct iw_param *rts, char *extra)
 278{
 279	struct wireless_dev *wdev = dev->ieee80211_ptr;
 280
 281	rts->value = wdev->wiphy->rts_threshold;
 282	rts->disabled = rts->value == (u32) -1;
 283	rts->fixed = 1;
 284
 285	return 0;
 286}
 287EXPORT_WEXT_HANDLER(cfg80211_wext_giwrts);
 288
 289int cfg80211_wext_siwfrag(struct net_device *dev,
 290			  struct iw_request_info *info,
 291			  struct iw_param *frag, char *extra)
 292{
 293	struct wireless_dev *wdev = dev->ieee80211_ptr;
 294	struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
 295	u32 ofrag = wdev->wiphy->frag_threshold;
 296	int err;
 297
 298	if (frag->disabled || !frag->fixed)
 299		wdev->wiphy->frag_threshold = (u32) -1;
 300	else if (frag->value < 256)
 301		return -EINVAL;
 302	else {
 303		/* Fragment length must be even, so strip LSB. */
 304		wdev->wiphy->frag_threshold = frag->value & ~0x1;
 305	}
 306
 307	err = rdev_set_wiphy_params(rdev, WIPHY_PARAM_FRAG_THRESHOLD);
 308	if (err)
 309		wdev->wiphy->frag_threshold = ofrag;
 310
 311	return err;
 312}
 313EXPORT_WEXT_HANDLER(cfg80211_wext_siwfrag);
 314
 315int cfg80211_wext_giwfrag(struct net_device *dev,
 316			  struct iw_request_info *info,
 317			  struct iw_param *frag, char *extra)
 318{
 319	struct wireless_dev *wdev = dev->ieee80211_ptr;
 320
 321	frag->value = wdev->wiphy->frag_threshold;
 322	frag->disabled = frag->value == (u32) -1;
 323	frag->fixed = 1;
 324
 325	return 0;
 326}
 327EXPORT_WEXT_HANDLER(cfg80211_wext_giwfrag);
 328
 329static int cfg80211_wext_siwretry(struct net_device *dev,
 330				  struct iw_request_info *info,
 331				  struct iw_param *retry, char *extra)
 332{
 333	struct wireless_dev *wdev = dev->ieee80211_ptr;
 334	struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
 335	u32 changed = 0;
 336	u8 olong = wdev->wiphy->retry_long;
 337	u8 oshort = wdev->wiphy->retry_short;
 338	int err;
 339
 340	if (retry->disabled || retry->value < 1 || retry->value > 255 ||
 341	    (retry->flags & IW_RETRY_TYPE) != IW_RETRY_LIMIT)
 342		return -EINVAL;
 343
 344	if (retry->flags & IW_RETRY_LONG) {
 345		wdev->wiphy->retry_long = retry->value;
 346		changed |= WIPHY_PARAM_RETRY_LONG;
 347	} else if (retry->flags & IW_RETRY_SHORT) {
 348		wdev->wiphy->retry_short = retry->value;
 349		changed |= WIPHY_PARAM_RETRY_SHORT;
 350	} else {
 351		wdev->wiphy->retry_short = retry->value;
 352		wdev->wiphy->retry_long = retry->value;
 353		changed |= WIPHY_PARAM_RETRY_LONG;
 354		changed |= WIPHY_PARAM_RETRY_SHORT;
 355	}
 356
 357	err = rdev_set_wiphy_params(rdev, changed);
 358	if (err) {
 359		wdev->wiphy->retry_short = oshort;
 360		wdev->wiphy->retry_long = olong;
 361	}
 362
 363	return err;
 364}
 365
 366int cfg80211_wext_giwretry(struct net_device *dev,
 367			   struct iw_request_info *info,
 368			   struct iw_param *retry, char *extra)
 369{
 370	struct wireless_dev *wdev = dev->ieee80211_ptr;
 371
 372	retry->disabled = 0;
 373
 374	if (retry->flags == 0 || (retry->flags & IW_RETRY_SHORT)) {
 375		/*
 376		 * First return short value, iwconfig will ask long value
 377		 * later if needed
 378		 */
 379		retry->flags |= IW_RETRY_LIMIT | IW_RETRY_SHORT;
 380		retry->value = wdev->wiphy->retry_short;
 381		if (wdev->wiphy->retry_long == wdev->wiphy->retry_short)
 382			retry->flags |= IW_RETRY_LONG;
 383
 384		return 0;
 385	}
 386
 387	if (retry->flags & IW_RETRY_LONG) {
 388		retry->flags = IW_RETRY_LIMIT | IW_RETRY_LONG;
 389		retry->value = wdev->wiphy->retry_long;
 390	}
 391
 392	return 0;
 393}
 394EXPORT_WEXT_HANDLER(cfg80211_wext_giwretry);
 395
 396static int __cfg80211_set_encryption(struct cfg80211_registered_device *rdev,
 397				     struct net_device *dev, bool pairwise,
 398				     const u8 *addr, bool remove, bool tx_key,
 399				     int idx, struct key_params *params)
 400{
 401	struct wireless_dev *wdev = dev->ieee80211_ptr;
 402	int err, i;
 403	bool rejoin = false;
 404
 405	if (pairwise && !addr)
 406		return -EINVAL;
 407
 408	/*
 409	 * In many cases we won't actually need this, but it's better
 410	 * to do it first in case the allocation fails. Don't use wext.
 411	 */
 412	if (!wdev->wext.keys) {
 413		wdev->wext.keys = kzalloc(sizeof(*wdev->wext.keys),
 414					  GFP_KERNEL);
 415		if (!wdev->wext.keys)
 416			return -ENOMEM;
 417		for (i = 0; i < CFG80211_MAX_WEP_KEYS; i++)
 418			wdev->wext.keys->params[i].key =
 419				wdev->wext.keys->data[i];
 420	}
 421
 422	if (wdev->iftype != NL80211_IFTYPE_ADHOC &&
 423	    wdev->iftype != NL80211_IFTYPE_STATION)
 424		return -EOPNOTSUPP;
 425
 426	if (params->cipher == WLAN_CIPHER_SUITE_AES_CMAC) {
 427		if (!wdev->current_bss)
 428			return -ENOLINK;
 429
 430		if (!rdev->ops->set_default_mgmt_key)
 431			return -EOPNOTSUPP;
 432
 433		if (idx < 4 || idx > 5)
 434			return -EINVAL;
 435	} else if (idx < 0 || idx > 3)
 436		return -EINVAL;
 437
 438	if (remove) {
 439		err = 0;
 440		if (wdev->current_bss) {
 441			/*
 442			 * If removing the current TX key, we will need to
 443			 * join a new IBSS without the privacy bit clear.
 444			 */
 445			if (idx == wdev->wext.default_key &&
 446			    wdev->iftype == NL80211_IFTYPE_ADHOC) {
 447				__cfg80211_leave_ibss(rdev, wdev->netdev, true);
 448				rejoin = true;
 449			}
 450
 451			if (!pairwise && addr &&
 452			    !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
 453				err = -ENOENT;
 454			else
 455				err = rdev_del_key(rdev, dev, idx, pairwise,
 456						   addr);
 457		}
 458		wdev->wext.connect.privacy = false;
 459		/*
 460		 * Applications using wireless extensions expect to be
 461		 * able to delete keys that don't exist, so allow that.
 462		 */
 463		if (err == -ENOENT)
 464			err = 0;
 465		if (!err) {
 466			if (!addr && idx < 4) {
 467				memset(wdev->wext.keys->data[idx], 0,
 468				       sizeof(wdev->wext.keys->data[idx]));
 469				wdev->wext.keys->params[idx].key_len = 0;
 470				wdev->wext.keys->params[idx].cipher = 0;
 471			}
 472			if (idx == wdev->wext.default_key)
 473				wdev->wext.default_key = -1;
 474			else if (idx == wdev->wext.default_mgmt_key)
 475				wdev->wext.default_mgmt_key = -1;
 476		}
 477
 478		if (!err && rejoin)
 479			err = cfg80211_ibss_wext_join(rdev, wdev);
 480
 481		return err;
 482	}
 483
 484	if (addr)
 485		tx_key = false;
 486
 487	if (cfg80211_validate_key_settings(rdev, params, idx, pairwise, addr))
 488		return -EINVAL;
 489
 490	err = 0;
 491	if (wdev->current_bss)
 492		err = rdev_add_key(rdev, dev, idx, pairwise, addr, params);
 493	else if (params->cipher != WLAN_CIPHER_SUITE_WEP40 &&
 494		 params->cipher != WLAN_CIPHER_SUITE_WEP104)
 495		return -EINVAL;
 496	if (err)
 497		return err;
 498
 499	/*
 500	 * We only need to store WEP keys, since they're the only keys that
 501	 * can be be set before a connection is established and persist after
 502	 * disconnecting.
 503	 */
 504	if (!addr && (params->cipher == WLAN_CIPHER_SUITE_WEP40 ||
 505		      params->cipher == WLAN_CIPHER_SUITE_WEP104)) {
 506		wdev->wext.keys->params[idx] = *params;
 507		memcpy(wdev->wext.keys->data[idx],
 508			params->key, params->key_len);
 509		wdev->wext.keys->params[idx].key =
 510			wdev->wext.keys->data[idx];
 511	}
 512
 513	if ((params->cipher == WLAN_CIPHER_SUITE_WEP40 ||
 514	     params->cipher == WLAN_CIPHER_SUITE_WEP104) &&
 515	    (tx_key || (!addr && wdev->wext.default_key == -1))) {
 516		if (wdev->current_bss) {
 517			/*
 518			 * If we are getting a new TX key from not having
 519			 * had one before we need to join a new IBSS with
 520			 * the privacy bit set.
 521			 */
 522			if (wdev->iftype == NL80211_IFTYPE_ADHOC &&
 523			    wdev->wext.default_key == -1) {
 524				__cfg80211_leave_ibss(rdev, wdev->netdev, true);
 525				rejoin = true;
 526			}
 527			err = rdev_set_default_key(rdev, dev, idx, true, true);
 528		}
 529		if (!err) {
 530			wdev->wext.default_key = idx;
 531			if (rejoin)
 532				err = cfg80211_ibss_wext_join(rdev, wdev);
 533		}
 534		return err;
 535	}
 536
 537	if (params->cipher == WLAN_CIPHER_SUITE_AES_CMAC &&
 538	    (tx_key || (!addr && wdev->wext.default_mgmt_key == -1))) {
 539		if (wdev->current_bss)
 540			err = rdev_set_default_mgmt_key(rdev, dev, idx);
 541		if (!err)
 542			wdev->wext.default_mgmt_key = idx;
 543		return err;
 544	}
 545
 546	return 0;
 547}
 548
 549static int cfg80211_set_encryption(struct cfg80211_registered_device *rdev,
 550				   struct net_device *dev, bool pairwise,
 551				   const u8 *addr, bool remove, bool tx_key,
 552				   int idx, struct key_params *params)
 553{
 554	int err;
 555
 556	wdev_lock(dev->ieee80211_ptr);
 557	err = __cfg80211_set_encryption(rdev, dev, pairwise, addr,
 558					remove, tx_key, idx, params);
 559	wdev_unlock(dev->ieee80211_ptr);
 560
 561	return err;
 562}
 563
 564static int cfg80211_wext_siwencode(struct net_device *dev,
 565				   struct iw_request_info *info,
 566				   struct iw_point *erq, char *keybuf)
 567{
 568	struct wireless_dev *wdev = dev->ieee80211_ptr;
 569	struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
 570	int idx, err;
 571	bool remove = false;
 572	struct key_params params;
 573
 574	if (wdev->iftype != NL80211_IFTYPE_STATION &&
 575	    wdev->iftype != NL80211_IFTYPE_ADHOC)
 576		return -EOPNOTSUPP;
 577
 578	/* no use -- only MFP (set_default_mgmt_key) is optional */
 579	if (!rdev->ops->del_key ||
 580	    !rdev->ops->add_key ||
 581	    !rdev->ops->set_default_key)
 582		return -EOPNOTSUPP;
 583
 584	idx = erq->flags & IW_ENCODE_INDEX;
 585	if (idx == 0) {
 586		idx = wdev->wext.default_key;
 587		if (idx < 0)
 588			idx = 0;
 589	} else if (idx < 1 || idx > 4)
 590		return -EINVAL;
 591	else
 592		idx--;
 593
 594	if (erq->flags & IW_ENCODE_DISABLED)
 595		remove = true;
 596	else if (erq->length == 0) {
 597		/* No key data - just set the default TX key index */
 598		err = 0;
 599		wdev_lock(wdev);
 600		if (wdev->current_bss)
 601			err = rdev_set_default_key(rdev, dev, idx, true,
 602						   true);
 603		if (!err)
 604			wdev->wext.default_key = idx;
 605		wdev_unlock(wdev);
 606		return err;
 607	}
 608
 609	memset(&params, 0, sizeof(params));
 610	params.key = keybuf;
 611	params.key_len = erq->length;
 612	if (erq->length == 5)
 613		params.cipher = WLAN_CIPHER_SUITE_WEP40;
 614	else if (erq->length == 13)
 615		params.cipher = WLAN_CIPHER_SUITE_WEP104;
 616	else if (!remove)
 617		return -EINVAL;
 618
 619	return cfg80211_set_encryption(rdev, dev, false, NULL, remove,
 620				       wdev->wext.default_key == -1,
 621				       idx, &params);
 622}
 623
 624static int cfg80211_wext_siwencodeext(struct net_device *dev,
 625				      struct iw_request_info *info,
 626				      struct iw_point *erq, char *extra)
 627{
 628	struct wireless_dev *wdev = dev->ieee80211_ptr;
 629	struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
 630	struct iw_encode_ext *ext = (struct iw_encode_ext *) extra;
 631	const u8 *addr;
 632	int idx;
 633	bool remove = false;
 634	struct key_params params;
 635	u32 cipher;
 636
 637	if (wdev->iftype != NL80211_IFTYPE_STATION &&
 638	    wdev->iftype != NL80211_IFTYPE_ADHOC)
 639		return -EOPNOTSUPP;
 640
 641	/* no use -- only MFP (set_default_mgmt_key) is optional */
 642	if (!rdev->ops->del_key ||
 643	    !rdev->ops->add_key ||
 644	    !rdev->ops->set_default_key)
 645		return -EOPNOTSUPP;
 646
 647	switch (ext->alg) {
 648	case IW_ENCODE_ALG_NONE:
 649		remove = true;
 650		cipher = 0;
 651		break;
 652	case IW_ENCODE_ALG_WEP:
 653		if (ext->key_len == 5)
 654			cipher = WLAN_CIPHER_SUITE_WEP40;
 655		else if (ext->key_len == 13)
 656			cipher = WLAN_CIPHER_SUITE_WEP104;
 657		else
 658			return -EINVAL;
 659		break;
 660	case IW_ENCODE_ALG_TKIP:
 661		cipher = WLAN_CIPHER_SUITE_TKIP;
 662		break;
 663	case IW_ENCODE_ALG_CCMP:
 664		cipher = WLAN_CIPHER_SUITE_CCMP;
 665		break;
 666	case IW_ENCODE_ALG_AES_CMAC:
 667		cipher = WLAN_CIPHER_SUITE_AES_CMAC;
 668		break;
 669	default:
 670		return -EOPNOTSUPP;
 671	}
 672
 673	if (erq->flags & IW_ENCODE_DISABLED)
 674		remove = true;
 675
 676	idx = erq->flags & IW_ENCODE_INDEX;
 677	if (cipher == WLAN_CIPHER_SUITE_AES_CMAC) {
 678		if (idx < 4 || idx > 5) {
 679			idx = wdev->wext.default_mgmt_key;
 680			if (idx < 0)
 681				return -EINVAL;
 682		} else
 683			idx--;
 684	} else {
 685		if (idx < 1 || idx > 4) {
 686			idx = wdev->wext.default_key;
 687			if (idx < 0)
 688				return -EINVAL;
 689		} else
 690			idx--;
 691	}
 692
 693	addr = ext->addr.sa_data;
 694	if (is_broadcast_ether_addr(addr))
 695		addr = NULL;
 696
 697	memset(&params, 0, sizeof(params));
 698	params.key = ext->key;
 699	params.key_len = ext->key_len;
 700	params.cipher = cipher;
 701
 702	if (ext->ext_flags & IW_ENCODE_EXT_RX_SEQ_VALID) {
 703		params.seq = ext->rx_seq;
 704		params.seq_len = 6;
 705	}
 706
 707	return cfg80211_set_encryption(
 708			rdev, dev,
 709			!(ext->ext_flags & IW_ENCODE_EXT_GROUP_KEY),
 710			addr, remove,
 711			ext->ext_flags & IW_ENCODE_EXT_SET_TX_KEY,
 712			idx, &params);
 713}
 714
 715static int cfg80211_wext_giwencode(struct net_device *dev,
 716				   struct iw_request_info *info,
 717				   struct iw_point *erq, char *keybuf)
 718{
 719	struct wireless_dev *wdev = dev->ieee80211_ptr;
 720	int idx;
 721
 722	if (wdev->iftype != NL80211_IFTYPE_STATION &&
 723	    wdev->iftype != NL80211_IFTYPE_ADHOC)
 724		return -EOPNOTSUPP;
 725
 726	idx = erq->flags & IW_ENCODE_INDEX;
 727	if (idx == 0) {
 728		idx = wdev->wext.default_key;
 729		if (idx < 0)
 730			idx = 0;
 731	} else if (idx < 1 || idx > 4)
 732		return -EINVAL;
 733	else
 734		idx--;
 735
 736	erq->flags = idx + 1;
 737
 738	if (!wdev->wext.keys || !wdev->wext.keys->params[idx].cipher) {
 739		erq->flags |= IW_ENCODE_DISABLED;
 740		erq->length = 0;
 741		return 0;
 742	}
 743
 744	erq->length = min_t(size_t, erq->length,
 745			    wdev->wext.keys->params[idx].key_len);
 746	memcpy(keybuf, wdev->wext.keys->params[idx].key, erq->length);
 747	erq->flags |= IW_ENCODE_ENABLED;
 748
 749	return 0;
 750}
 751
 752static int cfg80211_wext_siwfreq(struct net_device *dev,
 753				 struct iw_request_info *info,
 754				 struct iw_freq *wextfreq, char *extra)
 755{
 756	struct wireless_dev *wdev = dev->ieee80211_ptr;
 757	struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
 758	struct cfg80211_chan_def chandef = {
 759		.width = NL80211_CHAN_WIDTH_20_NOHT,
 760	};
 761	int freq;
 762
 763	switch (wdev->iftype) {
 764	case NL80211_IFTYPE_STATION:
 765		return cfg80211_mgd_wext_siwfreq(dev, info, wextfreq, extra);
 766	case NL80211_IFTYPE_ADHOC:
 767		return cfg80211_ibss_wext_siwfreq(dev, info, wextfreq, extra);
 768	case NL80211_IFTYPE_MONITOR:
 769		freq = cfg80211_wext_freq(wextfreq);
 770		if (freq < 0)
 771			return freq;
 772		if (freq == 0)
 773			return -EINVAL;
 774		chandef.center_freq1 = freq;
 775		chandef.chan = ieee80211_get_channel(&rdev->wiphy, freq);
 776		if (!chandef.chan)
 777			return -EINVAL;
 778		return cfg80211_set_monitor_channel(rdev, &chandef);
 779	case NL80211_IFTYPE_MESH_POINT:
 780		freq = cfg80211_wext_freq(wextfreq);
 781		if (freq < 0)
 782			return freq;
 783		if (freq == 0)
 784			return -EINVAL;
 785		chandef.center_freq1 = freq;
 786		chandef.chan = ieee80211_get_channel(&rdev->wiphy, freq);
 787		if (!chandef.chan)
 788			return -EINVAL;
 789		return cfg80211_set_mesh_channel(rdev, wdev, &chandef);
 790	default:
 791		return -EOPNOTSUPP;
 792	}
 793}
 794
 795static int cfg80211_wext_giwfreq(struct net_device *dev,
 796				 struct iw_request_info *info,
 797				 struct iw_freq *freq, char *extra)
 798{
 799	struct wireless_dev *wdev = dev->ieee80211_ptr;
 800	struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
 801	struct cfg80211_chan_def chandef = {};
 802	int ret;
 803
 804	switch (wdev->iftype) {
 805	case NL80211_IFTYPE_STATION:
 806		return cfg80211_mgd_wext_giwfreq(dev, info, freq, extra);
 807	case NL80211_IFTYPE_ADHOC:
 808		return cfg80211_ibss_wext_giwfreq(dev, info, freq, extra);
 809	case NL80211_IFTYPE_MONITOR:
 810		if (!rdev->ops->get_channel)
 811			return -EINVAL;
 812
 813		ret = rdev_get_channel(rdev, wdev, &chandef);
 814		if (ret)
 815			return ret;
 816		freq->m = chandef.chan->center_freq;
 817		freq->e = 6;
 818		return 0;
 819	default:
 820		return -EINVAL;
 821	}
 822}
 823
 824static int cfg80211_wext_siwtxpower(struct net_device *dev,
 825				    struct iw_request_info *info,
 826				    union iwreq_data *data, char *extra)
 827{
 828	struct wireless_dev *wdev = dev->ieee80211_ptr;
 829	struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
 830	enum nl80211_tx_power_setting type;
 831	int dbm = 0;
 832
 833	if ((data->txpower.flags & IW_TXPOW_TYPE) != IW_TXPOW_DBM)
 834		return -EINVAL;
 835	if (data->txpower.flags & IW_TXPOW_RANGE)
 836		return -EINVAL;
 837
 838	if (!rdev->ops->set_tx_power)
 839		return -EOPNOTSUPP;
 840
 841	/* only change when not disabling */
 842	if (!data->txpower.disabled) {
 843		rfkill_set_sw_state(rdev->rfkill, false);
 844
 845		if (data->txpower.fixed) {
 846			/*
 847			 * wext doesn't support negative values, see
 848			 * below where it's for automatic
 849			 */
 850			if (data->txpower.value < 0)
 851				return -EINVAL;
 852			dbm = data->txpower.value;
 853			type = NL80211_TX_POWER_FIXED;
 854			/* TODO: do regulatory check! */
 855		} else {
 856			/*
 857			 * Automatic power level setting, max being the value
 858			 * passed in from userland.
 859			 */
 860			if (data->txpower.value < 0) {
 861				type = NL80211_TX_POWER_AUTOMATIC;
 862			} else {
 863				dbm = data->txpower.value;
 864				type = NL80211_TX_POWER_LIMITED;
 865			}
 866		}
 867	} else {
 868		if (rfkill_set_sw_state(rdev->rfkill, true))
 869			schedule_work(&rdev->rfkill_block);
 870		return 0;
 871	}
 872
 873	return rdev_set_tx_power(rdev, wdev, type, DBM_TO_MBM(dbm));
 874}
 875
 876static int cfg80211_wext_giwtxpower(struct net_device *dev,
 877				    struct iw_request_info *info,
 878				    union iwreq_data *data, char *extra)
 879{
 880	struct wireless_dev *wdev = dev->ieee80211_ptr;
 881	struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
 882	int err, val;
 883
 884	if ((data->txpower.flags & IW_TXPOW_TYPE) != IW_TXPOW_DBM)
 885		return -EINVAL;
 886	if (data->txpower.flags & IW_TXPOW_RANGE)
 887		return -EINVAL;
 888
 889	if (!rdev->ops->get_tx_power)
 890		return -EOPNOTSUPP;
 891
 892	err = rdev_get_tx_power(rdev, wdev, &val);
 893	if (err)
 894		return err;
 895
 896	/* well... oh well */
 897	data->txpower.fixed = 1;
 898	data->txpower.disabled = rfkill_blocked(rdev->rfkill);
 899	data->txpower.value = val;
 900	data->txpower.flags = IW_TXPOW_DBM;
 901
 902	return 0;
 903}
 904
 905static int cfg80211_set_auth_alg(struct wireless_dev *wdev,
 906				 s32 auth_alg)
 907{
 908	int nr_alg = 0;
 909
 910	if (!auth_alg)
 911		return -EINVAL;
 912
 913	if (auth_alg & ~(IW_AUTH_ALG_OPEN_SYSTEM |
 914			 IW_AUTH_ALG_SHARED_KEY |
 915			 IW_AUTH_ALG_LEAP))
 916		return -EINVAL;
 917
 918	if (auth_alg & IW_AUTH_ALG_OPEN_SYSTEM) {
 919		nr_alg++;
 920		wdev->wext.connect.auth_type = NL80211_AUTHTYPE_OPEN_SYSTEM;
 921	}
 922
 923	if (auth_alg & IW_AUTH_ALG_SHARED_KEY) {
 924		nr_alg++;
 925		wdev->wext.connect.auth_type = NL80211_AUTHTYPE_SHARED_KEY;
 926	}
 927
 928	if (auth_alg & IW_AUTH_ALG_LEAP) {
 929		nr_alg++;
 930		wdev->wext.connect.auth_type = NL80211_AUTHTYPE_NETWORK_EAP;
 931	}
 932
 933	if (nr_alg > 1)
 934		wdev->wext.connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
 935
 936	return 0;
 937}
 938
 939static int cfg80211_set_wpa_version(struct wireless_dev *wdev, u32 wpa_versions)
 940{
 941	if (wpa_versions & ~(IW_AUTH_WPA_VERSION_WPA |
 942			     IW_AUTH_WPA_VERSION_WPA2|
 943		             IW_AUTH_WPA_VERSION_DISABLED))
 944		return -EINVAL;
 945
 946	if ((wpa_versions & IW_AUTH_WPA_VERSION_DISABLED) &&
 947	    (wpa_versions & (IW_AUTH_WPA_VERSION_WPA|
 948			     IW_AUTH_WPA_VERSION_WPA2)))
 949		return -EINVAL;
 950
 951	if (wpa_versions & IW_AUTH_WPA_VERSION_DISABLED)
 952		wdev->wext.connect.crypto.wpa_versions &=
 953			~(NL80211_WPA_VERSION_1|NL80211_WPA_VERSION_2);
 954
 955	if (wpa_versions & IW_AUTH_WPA_VERSION_WPA)
 956		wdev->wext.connect.crypto.wpa_versions |=
 957			NL80211_WPA_VERSION_1;
 958
 959	if (wpa_versions & IW_AUTH_WPA_VERSION_WPA2)
 960		wdev->wext.connect.crypto.wpa_versions |=
 961			NL80211_WPA_VERSION_2;
 962
 963	return 0;
 964}
 965
 966static int cfg80211_set_cipher_group(struct wireless_dev *wdev, u32 cipher)
 967{
 968	if (cipher & IW_AUTH_CIPHER_WEP40)
 969		wdev->wext.connect.crypto.cipher_group =
 970			WLAN_CIPHER_SUITE_WEP40;
 971	else if (cipher & IW_AUTH_CIPHER_WEP104)
 972		wdev->wext.connect.crypto.cipher_group =
 973			WLAN_CIPHER_SUITE_WEP104;
 974	else if (cipher & IW_AUTH_CIPHER_TKIP)
 975		wdev->wext.connect.crypto.cipher_group =
 976			WLAN_CIPHER_SUITE_TKIP;
 977	else if (cipher & IW_AUTH_CIPHER_CCMP)
 978		wdev->wext.connect.crypto.cipher_group =
 979			WLAN_CIPHER_SUITE_CCMP;
 980	else if (cipher & IW_AUTH_CIPHER_AES_CMAC)
 981		wdev->wext.connect.crypto.cipher_group =
 982			WLAN_CIPHER_SUITE_AES_CMAC;
 983	else if (cipher & IW_AUTH_CIPHER_NONE)
 984		wdev->wext.connect.crypto.cipher_group = 0;
 985	else
 986		return -EINVAL;
 987
 988	return 0;
 989}
 990
 991static int cfg80211_set_cipher_pairwise(struct wireless_dev *wdev, u32 cipher)
 992{
 993	int nr_ciphers = 0;
 994	u32 *ciphers_pairwise = wdev->wext.connect.crypto.ciphers_pairwise;
 995
 996	if (cipher & IW_AUTH_CIPHER_WEP40) {
 997		ciphers_pairwise[nr_ciphers] = WLAN_CIPHER_SUITE_WEP40;
 998		nr_ciphers++;
 999	}
1000
1001	if (cipher & IW_AUTH_CIPHER_WEP104) {
1002		ciphers_pairwise[nr_ciphers] = WLAN_CIPHER_SUITE_WEP104;
1003		nr_ciphers++;
1004	}
1005
1006	if (cipher & IW_AUTH_CIPHER_TKIP) {
1007		ciphers_pairwise[nr_ciphers] = WLAN_CIPHER_SUITE_TKIP;
1008		nr_ciphers++;
1009	}
1010
1011	if (cipher & IW_AUTH_CIPHER_CCMP) {
1012		ciphers_pairwise[nr_ciphers] = WLAN_CIPHER_SUITE_CCMP;
1013		nr_ciphers++;
1014	}
1015
1016	if (cipher & IW_AUTH_CIPHER_AES_CMAC) {
1017		ciphers_pairwise[nr_ciphers] = WLAN_CIPHER_SUITE_AES_CMAC;
1018		nr_ciphers++;
1019	}
1020
1021	BUILD_BUG_ON(NL80211_MAX_NR_CIPHER_SUITES < 5);
1022
1023	wdev->wext.connect.crypto.n_ciphers_pairwise = nr_ciphers;
1024
1025	return 0;
1026}
1027
1028
1029static int cfg80211_set_key_mgt(struct wireless_dev *wdev, u32 key_mgt)
1030{
1031	int nr_akm_suites = 0;
1032
1033	if (key_mgt & ~(IW_AUTH_KEY_MGMT_802_1X |
1034			IW_AUTH_KEY_MGMT_PSK))
1035		return -EINVAL;
1036
1037	if (key_mgt & IW_AUTH_KEY_MGMT_802_1X) {
1038		wdev->wext.connect.crypto.akm_suites[nr_akm_suites] =
1039			WLAN_AKM_SUITE_8021X;
1040		nr_akm_suites++;
1041	}
1042
1043	if (key_mgt & IW_AUTH_KEY_MGMT_PSK) {
1044		wdev->wext.connect.crypto.akm_suites[nr_akm_suites] =
1045			WLAN_AKM_SUITE_PSK;
1046		nr_akm_suites++;
1047	}
1048
1049	wdev->wext.connect.crypto.n_akm_suites = nr_akm_suites;
1050
1051	return 0;
1052}
1053
1054static int cfg80211_wext_siwauth(struct net_device *dev,
1055				 struct iw_request_info *info,
1056				 struct iw_param *data, char *extra)
1057{
1058	struct wireless_dev *wdev = dev->ieee80211_ptr;
1059
1060	if (wdev->iftype != NL80211_IFTYPE_STATION)
1061		return -EOPNOTSUPP;
1062
1063	switch (data->flags & IW_AUTH_INDEX) {
1064	case IW_AUTH_PRIVACY_INVOKED:
1065		wdev->wext.connect.privacy = data->value;
1066		return 0;
1067	case IW_AUTH_WPA_VERSION:
1068		return cfg80211_set_wpa_version(wdev, data->value);
1069	case IW_AUTH_CIPHER_GROUP:
1070		return cfg80211_set_cipher_group(wdev, data->value);
1071	case IW_AUTH_KEY_MGMT:
1072		return cfg80211_set_key_mgt(wdev, data->value);
1073	case IW_AUTH_CIPHER_PAIRWISE:
1074		return cfg80211_set_cipher_pairwise(wdev, data->value);
1075	case IW_AUTH_80211_AUTH_ALG:
1076		return cfg80211_set_auth_alg(wdev, data->value);
1077	case IW_AUTH_WPA_ENABLED:
1078	case IW_AUTH_RX_UNENCRYPTED_EAPOL:
1079	case IW_AUTH_DROP_UNENCRYPTED:
1080	case IW_AUTH_MFP:
1081		return 0;
1082	default:
1083		return -EOPNOTSUPP;
1084	}
1085}
1086
1087static int cfg80211_wext_giwauth(struct net_device *dev,
1088				 struct iw_request_info *info,
1089				 struct iw_param *data, char *extra)
1090{
1091	/* XXX: what do we need? */
1092
1093	return -EOPNOTSUPP;
1094}
1095
1096static int cfg80211_wext_siwpower(struct net_device *dev,
1097				  struct iw_request_info *info,
1098				  struct iw_param *wrq, char *extra)
1099{
1100	struct wireless_dev *wdev = dev->ieee80211_ptr;
1101	struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
1102	bool ps = wdev->ps;
1103	int timeout = wdev->ps_timeout;
1104	int err;
1105
1106	if (wdev->iftype != NL80211_IFTYPE_STATION)
1107		return -EINVAL;
1108
1109	if (!rdev->ops->set_power_mgmt)
1110		return -EOPNOTSUPP;
1111
1112	if (wrq->disabled) {
1113		ps = false;
1114	} else {
1115		switch (wrq->flags & IW_POWER_MODE) {
1116		case IW_POWER_ON:       /* If not specified */
1117		case IW_POWER_MODE:     /* If set all mask */
1118		case IW_POWER_ALL_R:    /* If explicitely state all */
1119			ps = true;
1120			break;
1121		default:                /* Otherwise we ignore */
1122			return -EINVAL;
1123		}
1124
1125		if (wrq->flags & ~(IW_POWER_MODE | IW_POWER_TIMEOUT))
1126			return -EINVAL;
1127
1128		if (wrq->flags & IW_POWER_TIMEOUT)
1129			timeout = wrq->value / 1000;
1130	}
1131
1132	err = rdev_set_power_mgmt(rdev, dev, ps, timeout);
1133	if (err)
1134		return err;
1135
1136	wdev->ps = ps;
1137	wdev->ps_timeout = timeout;
1138
1139	return 0;
1140
1141}
1142
1143static int cfg80211_wext_giwpower(struct net_device *dev,
1144				  struct iw_request_info *info,
1145				  struct iw_param *wrq, char *extra)
1146{
1147	struct wireless_dev *wdev = dev->ieee80211_ptr;
1148
1149	wrq->disabled = !wdev->ps;
1150
1151	return 0;
1152}
1153
1154static int cfg80211_wds_wext_siwap(struct net_device *dev,
1155				   struct iw_request_info *info,
1156				   struct sockaddr *addr, char *extra)
1157{
1158	struct wireless_dev *wdev = dev->ieee80211_ptr;
1159	struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
1160	int err;
1161
1162	if (WARN_ON(wdev->iftype != NL80211_IFTYPE_WDS))
1163		return -EINVAL;
1164
1165	if (addr->sa_family != ARPHRD_ETHER)
1166		return -EINVAL;
1167
1168	if (netif_running(dev))
1169		return -EBUSY;
1170
1171	if (!rdev->ops->set_wds_peer)
1172		return -EOPNOTSUPP;
1173
1174	err = rdev_set_wds_peer(rdev, dev, (u8 *)&addr->sa_data);
1175	if (err)
1176		return err;
1177
1178	memcpy(&wdev->wext.bssid, (u8 *) &addr->sa_data, ETH_ALEN);
1179
1180	return 0;
1181}
1182
1183static int cfg80211_wds_wext_giwap(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
1189	if (WARN_ON(wdev->iftype != NL80211_IFTYPE_WDS))
1190		return -EINVAL;
1191
1192	addr->sa_family = ARPHRD_ETHER;
1193	memcpy(&addr->sa_data, wdev->wext.bssid, ETH_ALEN);
1194
1195	return 0;
1196}
1197
1198static int cfg80211_wext_siwrate(struct net_device *dev,
1199				 struct iw_request_info *info,
1200				 struct iw_param *rate, char *extra)
1201{
1202	struct wireless_dev *wdev = dev->ieee80211_ptr;
1203	struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
1204	struct cfg80211_bitrate_mask mask;
1205	u32 fixed, maxrate;
1206	struct ieee80211_supported_band *sband;
1207	int band, ridx;
1208	bool match = false;
1209
1210	if (!rdev->ops->set_bitrate_mask)
1211		return -EOPNOTSUPP;
1212
1213	memset(&mask, 0, sizeof(mask));
1214	fixed = 0;
1215	maxrate = (u32)-1;
1216
1217	if (rate->value < 0) {
1218		/* nothing */
1219	} else if (rate->fixed) {
1220		fixed = rate->value / 100000;
1221	} else {
1222		maxrate = rate->value / 100000;
1223	}
1224
1225	for (band = 0; band < NUM_NL80211_BANDS; band++) {
1226		sband = wdev->wiphy->bands[band];
1227		if (sband == NULL)
1228			continue;
1229		for (ridx = 0; ridx < sband->n_bitrates; ridx++) {
1230			struct ieee80211_rate *srate = &sband->bitrates[ridx];
1231			if (fixed == srate->bitrate) {
1232				mask.control[band].legacy = 1 << ridx;
1233				match = true;
1234				break;
1235			}
1236			if (srate->bitrate <= maxrate) {
1237				mask.control[band].legacy |= 1 << ridx;
1238				match = true;
1239			}
1240		}
1241	}
1242
1243	if (!match)
1244		return -EINVAL;
1245
1246	return rdev_set_bitrate_mask(rdev, dev, NULL, &mask);
1247}
1248
1249static int cfg80211_wext_giwrate(struct net_device *dev,
1250				 struct iw_request_info *info,
1251				 struct iw_param *rate, char *extra)
1252{
1253	struct wireless_dev *wdev = dev->ieee80211_ptr;
1254	struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
1255	struct station_info sinfo = {};
1256	u8 addr[ETH_ALEN];
1257	int err;
1258
1259	if (wdev->iftype != NL80211_IFTYPE_STATION)
1260		return -EOPNOTSUPP;
1261
1262	if (!rdev->ops->get_station)
1263		return -EOPNOTSUPP;
1264
1265	err = 0;
1266	wdev_lock(wdev);
1267	if (wdev->current_bss)
1268		memcpy(addr, wdev->current_bss->pub.bssid, ETH_ALEN);
1269	else
1270		err = -EOPNOTSUPP;
1271	wdev_unlock(wdev);
1272	if (err)
1273		return err;
1274
1275	err = rdev_get_station(rdev, dev, addr, &sinfo);
1276	if (err)
1277		return err;
1278
1279	if (!(sinfo.filled & BIT_ULL(NL80211_STA_INFO_TX_BITRATE))) {
1280		err = -EOPNOTSUPP;
1281		goto free;
1282	}
1283
1284	rate->value = 100000 * cfg80211_calculate_bitrate(&sinfo.txrate);
1285
1286free:
1287	cfg80211_sinfo_release_content(&sinfo);
1288	return err;
1289}
1290
1291/* Get wireless statistics.  Called by /proc/net/wireless and by SIOCGIWSTATS */
1292static struct iw_statistics *cfg80211_wireless_stats(struct net_device *dev)
1293{
1294	struct wireless_dev *wdev = dev->ieee80211_ptr;
1295	struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
1296	/* we are under RTNL - globally locked - so can use static structs */
1297	static struct iw_statistics wstats;
1298	static struct station_info sinfo = {};
1299	u8 bssid[ETH_ALEN];
1300
1301	if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION)
1302		return NULL;
1303
1304	if (!rdev->ops->get_station)
1305		return NULL;
1306
1307	/* Grab BSSID of current BSS, if any */
1308	wdev_lock(wdev);
1309	if (!wdev->current_bss) {
1310		wdev_unlock(wdev);
1311		return NULL;
1312	}
1313	memcpy(bssid, wdev->current_bss->pub.bssid, ETH_ALEN);
1314	wdev_unlock(wdev);
1315
1316	memset(&sinfo, 0, sizeof(sinfo));
1317
1318	if (rdev_get_station(rdev, dev, bssid, &sinfo))
1319		return NULL;
1320
1321	memset(&wstats, 0, sizeof(wstats));
1322
1323	switch (rdev->wiphy.signal_type) {
1324	case CFG80211_SIGNAL_TYPE_MBM:
1325		if (sinfo.filled & BIT_ULL(NL80211_STA_INFO_SIGNAL)) {
1326			int sig = sinfo.signal;
1327			wstats.qual.updated |= IW_QUAL_LEVEL_UPDATED;
1328			wstats.qual.updated |= IW_QUAL_QUAL_UPDATED;
1329			wstats.qual.updated |= IW_QUAL_DBM;
1330			wstats.qual.level = sig;
1331			if (sig < -110)
1332				sig = -110;
1333			else if (sig > -40)
1334				sig = -40;
1335			wstats.qual.qual = sig + 110;
1336			break;
1337		}
1338		/* fall through */
1339	case CFG80211_SIGNAL_TYPE_UNSPEC:
1340		if (sinfo.filled & BIT_ULL(NL80211_STA_INFO_SIGNAL)) {
1341			wstats.qual.updated |= IW_QUAL_LEVEL_UPDATED;
1342			wstats.qual.updated |= IW_QUAL_QUAL_UPDATED;
1343			wstats.qual.level = sinfo.signal;
1344			wstats.qual.qual = sinfo.signal;
1345			break;
1346		}
1347		/* fall through */
1348	default:
1349		wstats.qual.updated |= IW_QUAL_LEVEL_INVALID;
1350		wstats.qual.updated |= IW_QUAL_QUAL_INVALID;
1351	}
1352
1353	wstats.qual.updated |= IW_QUAL_NOISE_INVALID;
1354	if (sinfo.filled & BIT_ULL(NL80211_STA_INFO_RX_DROP_MISC))
1355		wstats.discard.misc = sinfo.rx_dropped_misc;
1356	if (sinfo.filled & BIT_ULL(NL80211_STA_INFO_TX_FAILED))
1357		wstats.discard.retries = sinfo.tx_failed;
1358
1359	cfg80211_sinfo_release_content(&sinfo);
1360
1361	return &wstats;
1362}
1363
1364static int cfg80211_wext_siwap(struct net_device *dev,
1365			       struct iw_request_info *info,
1366			       struct sockaddr *ap_addr, char *extra)
1367{
1368	struct wireless_dev *wdev = dev->ieee80211_ptr;
1369
1370	switch (wdev->iftype) {
1371	case NL80211_IFTYPE_ADHOC:
1372		return cfg80211_ibss_wext_siwap(dev, info, ap_addr, extra);
1373	case NL80211_IFTYPE_STATION:
1374		return cfg80211_mgd_wext_siwap(dev, info, ap_addr, extra);
1375	case NL80211_IFTYPE_WDS:
1376		return cfg80211_wds_wext_siwap(dev, info, ap_addr, extra);
1377	default:
1378		return -EOPNOTSUPP;
1379	}
1380}
1381
1382static int cfg80211_wext_giwap(struct net_device *dev,
1383			       struct iw_request_info *info,
1384			       struct sockaddr *ap_addr, char *extra)
1385{
1386	struct wireless_dev *wdev = dev->ieee80211_ptr;
1387
1388	switch (wdev->iftype) {
1389	case NL80211_IFTYPE_ADHOC:
1390		return cfg80211_ibss_wext_giwap(dev, info, ap_addr, extra);
1391	case NL80211_IFTYPE_STATION:
1392		return cfg80211_mgd_wext_giwap(dev, info, ap_addr, extra);
1393	case NL80211_IFTYPE_WDS:
1394		return cfg80211_wds_wext_giwap(dev, info, ap_addr, extra);
1395	default:
1396		return -EOPNOTSUPP;
1397	}
1398}
1399
1400static int cfg80211_wext_siwessid(struct net_device *dev,
1401				  struct iw_request_info *info,
1402				  struct iw_point *data, char *ssid)
1403{
1404	struct wireless_dev *wdev = dev->ieee80211_ptr;
1405
1406	switch (wdev->iftype) {
1407	case NL80211_IFTYPE_ADHOC:
1408		return cfg80211_ibss_wext_siwessid(dev, info, data, ssid);
1409	case NL80211_IFTYPE_STATION:
1410		return cfg80211_mgd_wext_siwessid(dev, info, data, ssid);
1411	default:
1412		return -EOPNOTSUPP;
1413	}
1414}
1415
1416static int cfg80211_wext_giwessid(struct net_device *dev,
1417				  struct iw_request_info *info,
1418				  struct iw_point *data, char *ssid)
1419{
1420	struct wireless_dev *wdev = dev->ieee80211_ptr;
1421
1422	data->flags = 0;
1423	data->length = 0;
1424
1425	switch (wdev->iftype) {
1426	case NL80211_IFTYPE_ADHOC:
1427		return cfg80211_ibss_wext_giwessid(dev, info, data, ssid);
1428	case NL80211_IFTYPE_STATION:
1429		return cfg80211_mgd_wext_giwessid(dev, info, data, ssid);
1430	default:
1431		return -EOPNOTSUPP;
1432	}
1433}
1434
1435static int cfg80211_wext_siwpmksa(struct net_device *dev,
1436				  struct iw_request_info *info,
1437				  struct iw_point *data, char *extra)
1438{
1439	struct wireless_dev *wdev = dev->ieee80211_ptr;
1440	struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
1441	struct cfg80211_pmksa cfg_pmksa;
1442	struct iw_pmksa *pmksa = (struct iw_pmksa *)extra;
1443
1444	memset(&cfg_pmksa, 0, sizeof(struct cfg80211_pmksa));
1445
1446	if (wdev->iftype != NL80211_IFTYPE_STATION)
1447		return -EINVAL;
1448
1449	cfg_pmksa.bssid = pmksa->bssid.sa_data;
1450	cfg_pmksa.pmkid = pmksa->pmkid;
1451
1452	switch (pmksa->cmd) {
1453	case IW_PMKSA_ADD:
1454		if (!rdev->ops->set_pmksa)
1455			return -EOPNOTSUPP;
1456
1457		return rdev_set_pmksa(rdev, dev, &cfg_pmksa);
1458
1459	case IW_PMKSA_REMOVE:
1460		if (!rdev->ops->del_pmksa)
1461			return -EOPNOTSUPP;
1462
1463		return rdev_del_pmksa(rdev, dev, &cfg_pmksa);
1464
1465	case IW_PMKSA_FLUSH:
1466		if (!rdev->ops->flush_pmksa)
1467			return -EOPNOTSUPP;
1468
1469		return rdev_flush_pmksa(rdev, dev);
1470
1471	default:
1472		return -EOPNOTSUPP;
1473	}
1474}
1475
1476static const iw_handler cfg80211_handlers[] = {
1477	[IW_IOCTL_IDX(SIOCGIWNAME)]	= (iw_handler) cfg80211_wext_giwname,
1478	[IW_IOCTL_IDX(SIOCSIWFREQ)]	= (iw_handler) cfg80211_wext_siwfreq,
1479	[IW_IOCTL_IDX(SIOCGIWFREQ)]	= (iw_handler) cfg80211_wext_giwfreq,
1480	[IW_IOCTL_IDX(SIOCSIWMODE)]	= (iw_handler) cfg80211_wext_siwmode,
1481	[IW_IOCTL_IDX(SIOCGIWMODE)]	= (iw_handler) cfg80211_wext_giwmode,
1482	[IW_IOCTL_IDX(SIOCGIWRANGE)]	= (iw_handler) cfg80211_wext_giwrange,
1483	[IW_IOCTL_IDX(SIOCSIWAP)]	= (iw_handler) cfg80211_wext_siwap,
1484	[IW_IOCTL_IDX(SIOCGIWAP)]	= (iw_handler) cfg80211_wext_giwap,
1485	[IW_IOCTL_IDX(SIOCSIWMLME)]	= (iw_handler) cfg80211_wext_siwmlme,
1486	[IW_IOCTL_IDX(SIOCSIWSCAN)]	= (iw_handler) cfg80211_wext_siwscan,
1487	[IW_IOCTL_IDX(SIOCGIWSCAN)]	= (iw_handler) cfg80211_wext_giwscan,
1488	[IW_IOCTL_IDX(SIOCSIWESSID)]	= (iw_handler) cfg80211_wext_siwessid,
1489	[IW_IOCTL_IDX(SIOCGIWESSID)]	= (iw_handler) cfg80211_wext_giwessid,
1490	[IW_IOCTL_IDX(SIOCSIWRATE)]	= (iw_handler) cfg80211_wext_siwrate,
1491	[IW_IOCTL_IDX(SIOCGIWRATE)]	= (iw_handler) cfg80211_wext_giwrate,
1492	[IW_IOCTL_IDX(SIOCSIWRTS)]	= (iw_handler) cfg80211_wext_siwrts,
1493	[IW_IOCTL_IDX(SIOCGIWRTS)]	= (iw_handler) cfg80211_wext_giwrts,
1494	[IW_IOCTL_IDX(SIOCSIWFRAG)]	= (iw_handler) cfg80211_wext_siwfrag,
1495	[IW_IOCTL_IDX(SIOCGIWFRAG)]	= (iw_handler) cfg80211_wext_giwfrag,
1496	[IW_IOCTL_IDX(SIOCSIWTXPOW)]	= (iw_handler) cfg80211_wext_siwtxpower,
1497	[IW_IOCTL_IDX(SIOCGIWTXPOW)]	= (iw_handler) cfg80211_wext_giwtxpower,
1498	[IW_IOCTL_IDX(SIOCSIWRETRY)]	= (iw_handler) cfg80211_wext_siwretry,
1499	[IW_IOCTL_IDX(SIOCGIWRETRY)]	= (iw_handler) cfg80211_wext_giwretry,
1500	[IW_IOCTL_IDX(SIOCSIWENCODE)]	= (iw_handler) cfg80211_wext_siwencode,
1501	[IW_IOCTL_IDX(SIOCGIWENCODE)]	= (iw_handler) cfg80211_wext_giwencode,
1502	[IW_IOCTL_IDX(SIOCSIWPOWER)]	= (iw_handler) cfg80211_wext_siwpower,
1503	[IW_IOCTL_IDX(SIOCGIWPOWER)]	= (iw_handler) cfg80211_wext_giwpower,
1504	[IW_IOCTL_IDX(SIOCSIWGENIE)]	= (iw_handler) cfg80211_wext_siwgenie,
1505	[IW_IOCTL_IDX(SIOCSIWAUTH)]	= (iw_handler) cfg80211_wext_siwauth,
1506	[IW_IOCTL_IDX(SIOCGIWAUTH)]	= (iw_handler) cfg80211_wext_giwauth,
1507	[IW_IOCTL_IDX(SIOCSIWENCODEEXT)]= (iw_handler) cfg80211_wext_siwencodeext,
1508	[IW_IOCTL_IDX(SIOCSIWPMKSA)]	= (iw_handler) cfg80211_wext_siwpmksa,
1509};
1510
1511const struct iw_handler_def cfg80211_wext_handler = {
1512	.num_standard		= ARRAY_SIZE(cfg80211_handlers),
1513	.standard		= cfg80211_handlers,
1514	.get_wireless_stats = cfg80211_wireless_stats,
1515};