net/wireless/wext-compat.c - kernel/msm-5.4 - Gitiles

 /*
  * cfg80211 - wext compat code
  *
  * This is temporary code until all wireless functionality is migrated
  * into cfg80211, when that happens all the exports here go away and
  * we directly assign the wireless handlers of wireless interfaces.
  *
  * Copyright 2008-2009	Johannes Berg <johannes@sipsolutions.net>
  */

 #include <linux/wireless.h>
 #include <linux/nl80211.h>
 #include <linux/if_arp.h>
 #include <linux/etherdevice.h>
 #include <net/iw_handler.h>
 #include <net/cfg80211.h>
 #include "core.h"

 int cfg80211_wext_giwname(struct net_device *dev,
 			  struct iw_request_info *info,
 			  char *name, char *extra)
 {
 	struct wireless_dev *wdev = dev->ieee80211_ptr;
 	struct ieee80211_supported_band *sband;
 	bool is_ht = false, is_a = false, is_b = false, is_g = false;

 	if (!wdev)
 		return -EOPNOTSUPP;

 	sband = wdev->wiphy->bands[IEEE80211_BAND_5GHZ];
 	if (sband) {
 		is_a = true;
 		is_ht |= sband->ht_cap.ht_supported;
 	}

 	sband = wdev->wiphy->bands[IEEE80211_BAND_2GHZ];
 	if (sband) {
 		int i;
 		/* Check for mandatory rates */
 		for (i = 0; i < sband->n_bitrates; i++) {
 			if (sband->bitrates[i].bitrate == 10)
 				is_b = true;
 			if (sband->bitrates[i].bitrate == 60)
 				is_g = true;
 		}
 		is_ht |= sband->ht_cap.ht_supported;
 	}

 	strcpy(name, "IEEE 802.11");
 	if (is_a)
 		strcat(name, "a");
 	if (is_b)
 		strcat(name, "b");
 	if (is_g)
 		strcat(name, "g");
 	if (is_ht)
 		strcat(name, "n");

 	return 0;
 }
 EXPORT_SYMBOL_GPL(cfg80211_wext_giwname);

 int cfg80211_wext_siwmode(struct net_device *dev, struct iw_request_info *info,
 			  u32 *mode, char *extra)
 {
 	struct wireless_dev *wdev = dev->ieee80211_ptr;
 	struct cfg80211_registered_device *rdev;
 	struct vif_params vifparams;
 	enum nl80211_iftype type;
 	int ret;

 	if (!wdev)
 		return -EOPNOTSUPP;

 	rdev = wiphy_to_dev(wdev->wiphy);

 	if (!rdev->ops->change_virtual_intf)
 		return -EOPNOTSUPP;

 	/* don't support changing VLANs, you just re-create them */
 	if (wdev->iftype == NL80211_IFTYPE_AP_VLAN)
 		return -EOPNOTSUPP;

 	switch (*mode) {
 	case IW_MODE_INFRA:
 		type = NL80211_IFTYPE_STATION;
 		break;
 	case IW_MODE_ADHOC:
 		type = NL80211_IFTYPE_ADHOC;
 		break;
 	case IW_MODE_REPEAT:
 		type = NL80211_IFTYPE_WDS;
 		break;
 	case IW_MODE_MONITOR:
 		type = NL80211_IFTYPE_MONITOR;
 		break;
 	default:
 		return -EINVAL;
 	}

 	if (type == wdev->iftype)
 		return 0;

 	memset(&vifparams, 0, sizeof(vifparams));

 	ret = rdev->ops->change_virtual_intf(wdev->wiphy, dev->ifindex, type,
 					     NULL, &vifparams);
 	WARN_ON(!ret && wdev->iftype != type);

 	return ret;
 }
 EXPORT_SYMBOL_GPL(cfg80211_wext_siwmode);

 int cfg80211_wext_giwmode(struct net_device *dev, struct iw_request_info *info,
 			  u32 *mode, char *extra)
 {
 	struct wireless_dev *wdev = dev->ieee80211_ptr;

 	if (!wdev)
 		return -EOPNOTSUPP;

 	switch (wdev->iftype) {
 	case NL80211_IFTYPE_AP:
 		*mode = IW_MODE_MASTER;
 		break;
 	case NL80211_IFTYPE_STATION:
 		*mode = IW_MODE_INFRA;
 		break;
 	case NL80211_IFTYPE_ADHOC:
 		*mode = IW_MODE_ADHOC;
 		break;
 	case NL80211_IFTYPE_MONITOR:
 		*mode = IW_MODE_MONITOR;
 		break;
 	case NL80211_IFTYPE_WDS:
 		*mode = IW_MODE_REPEAT;
 		break;
 	case NL80211_IFTYPE_AP_VLAN:
 		*mode = IW_MODE_SECOND;		/* FIXME */
 		break;
 	default:
 		*mode = IW_MODE_AUTO;
 		break;
 	}
 	return 0;
 }
 EXPORT_SYMBOL_GPL(cfg80211_wext_giwmode);


 int cfg80211_wext_giwrange(struct net_device *dev,
 			   struct iw_request_info *info,
 			   struct iw_point *data, char *extra)
 {
 	struct wireless_dev *wdev = dev->ieee80211_ptr;
 	struct iw_range *range = (struct iw_range *) extra;
 	enum ieee80211_band band;
 	int c = 0;

 	if (!wdev)
 		return -EOPNOTSUPP;

 	data->length = sizeof(struct iw_range);
 	memset(range, 0, sizeof(struct iw_range));

 	range->we_version_compiled = WIRELESS_EXT;
 	range->we_version_source = 21;
 	range->retry_capa = IW_RETRY_LIMIT;
 	range->retry_flags = IW_RETRY_LIMIT;
 	range->min_retry = 0;
 	range->max_retry = 255;
 	range->min_rts = 0;
 	range->max_rts = 2347;
 	range->min_frag = 256;
 	range->max_frag = 2346;

 	range->encoding_size[0] = 5;
 	range->encoding_size[1] = 13;
 	range->num_encoding_sizes = 2;
 	range->max_encoding_tokens = 4;

 	range->max_qual.updated = IW_QUAL_NOISE_INVALID;

 	switch (wdev->wiphy->signal_type) {
 	case CFG80211_SIGNAL_TYPE_NONE:
 		break;
 	case CFG80211_SIGNAL_TYPE_MBM:
 		range->max_qual.level = -110;
 		range->max_qual.qual = 70;
 		range->avg_qual.qual = 35;
 		range->max_qual.updated |= IW_QUAL_DBM;
 		range->max_qual.updated |= IW_QUAL_QUAL_UPDATED;
 		range->max_qual.updated |= IW_QUAL_LEVEL_UPDATED;
 		break;
 	case CFG80211_SIGNAL_TYPE_UNSPEC:
 		range->max_qual.level = 100;
 		range->max_qual.qual = 100;
 		range->avg_qual.qual = 50;
 		range->max_qual.updated |= IW_QUAL_QUAL_UPDATED;
 		range->max_qual.updated |= IW_QUAL_LEVEL_UPDATED;
 		break;
 	}

 	range->avg_qual.level = range->max_qual.level / 2;
 	range->avg_qual.noise = range->max_qual.noise / 2;
 	range->avg_qual.updated = range->max_qual.updated;

 	range->enc_capa = IW_ENC_CAPA_WPA | IW_ENC_CAPA_WPA2 |
 			  IW_ENC_CAPA_CIPHER_TKIP | IW_ENC_CAPA_CIPHER_CCMP;

 	for (band = 0; band < IEEE80211_NUM_BANDS; band ++) {
 		int i;
 		struct ieee80211_supported_band *sband;

 		sband = wdev->wiphy->bands[band];

 		if (!sband)
 			continue;

 		for (i = 0; i < sband->n_channels && c < IW_MAX_FREQUENCIES; i++) {
 			struct ieee80211_channel *chan = &sband->channels[i];

 			if (!(chan->flags & IEEE80211_CHAN_DISABLED)) {
 				range->freq[c].i =
 					ieee80211_frequency_to_channel(
 						chan->center_freq);
 				range->freq[c].m = chan->center_freq;
 				range->freq[c].e = 6;
 				c++;
 			}
 		}
 	}
 	range->num_channels = c;
 	range->num_frequency = c;

 	IW_EVENT_CAPA_SET_KERNEL(range->event_capa);
 	IW_EVENT_CAPA_SET(range->event_capa, SIOCGIWAP);
 	IW_EVENT_CAPA_SET(range->event_capa, SIOCGIWSCAN);

 	range->scan_capa |= IW_SCAN_CAPA_ESSID;

 	return 0;
 }
 EXPORT_SYMBOL_GPL(cfg80211_wext_giwrange);

 int cfg80211_wext_siwmlme(struct net_device *dev,
 			  struct iw_request_info *info,
 			  struct iw_point *data, char *extra)
 {
 	struct wireless_dev *wdev = dev->ieee80211_ptr;
 	struct iw_mlme *mlme = (struct iw_mlme *)extra;
 	struct cfg80211_registered_device *rdev;
 	union {
 		struct cfg80211_disassoc_request disassoc;
 		struct cfg80211_deauth_request deauth;
 	} cmd;

 	if (!wdev)
 		return -EOPNOTSUPP;

 	rdev = wiphy_to_dev(wdev->wiphy);

 	if (wdev->iftype != NL80211_IFTYPE_STATION)
 		return -EINVAL;

 	if (mlme->addr.sa_family != ARPHRD_ETHER)
 		return -EINVAL;

 	memset(&cmd, 0, sizeof(cmd));

 	switch (mlme->cmd) {
 	case IW_MLME_DEAUTH:
 		if (!rdev->ops->deauth)
 			return -EOPNOTSUPP;
 		cmd.deauth.peer_addr = mlme->addr.sa_data;
 		cmd.deauth.reason_code = mlme->reason_code;
 		return rdev->ops->deauth(wdev->wiphy, dev, &cmd.deauth);
 	case IW_MLME_DISASSOC:
 		if (!rdev->ops->disassoc)
 			return -EOPNOTSUPP;
 		cmd.disassoc.peer_addr = mlme->addr.sa_data;
 		cmd.disassoc.reason_code = mlme->reason_code;
 		return rdev->ops->disassoc(wdev->wiphy, dev, &cmd.disassoc);
 	default:
 		return -EOPNOTSUPP;
 	}
 }
 EXPORT_SYMBOL_GPL(cfg80211_wext_siwmlme);


 /**
  * cfg80211_wext_freq - get wext frequency for non-"auto"
  * @wiphy: the wiphy
  * @freq: the wext freq encoding
  *
  * Returns a channel, %NULL for auto, or an ERR_PTR for errors!
  */
 struct ieee80211_channel *cfg80211_wext_freq(struct wiphy *wiphy,
 					     struct iw_freq *freq)
 {
 	struct ieee80211_channel *chan;
 	int f;

 	/*
 	 * Parse frequency - return NULL for auto and
 	 * -EINVAL for impossible things.
 	 */
 	if (freq->e == 0) {
 		if (freq->m < 0)
 			return NULL;
 		f = ieee80211_channel_to_frequency(freq->m);
 	} else {
 		int i, div = 1000000;
 		for (i = 0; i < freq->e; i++)
 			div /= 10;
 		if (div <= 0)
 			return ERR_PTR(-EINVAL);
 		f = freq->m / div;
 	}

 	/*
 	 * Look up channel struct and return -EINVAL when
 	 * it cannot be found.
 	 */
 	chan = ieee80211_get_channel(wiphy, f);
 	if (!chan)
 		return ERR_PTR(-EINVAL);
 	return chan;
 }
 EXPORT_SYMBOL_GPL(cfg80211_wext_freq);

 int cfg80211_wext_siwrts(struct net_device *dev,
 			 struct iw_request_info *info,
 			 struct iw_param *rts, char *extra)
 {
 	struct wireless_dev *wdev = dev->ieee80211_ptr;
 	struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
 	u32 orts = wdev->wiphy->rts_threshold;
 	int err;

 	if (rts->disabled || !rts->fixed)
 		wdev->wiphy->rts_threshold = (u32) -1;
 	else if (rts->value < 0)
 		return -EINVAL;
 	else
 		wdev->wiphy->rts_threshold = rts->value;

 	err = rdev->ops->set_wiphy_params(wdev->wiphy,
 					  WIPHY_PARAM_RTS_THRESHOLD);
 	if (err)
 		wdev->wiphy->rts_threshold = orts;

 	return err;
 }
 EXPORT_SYMBOL_GPL(cfg80211_wext_siwrts);

 int cfg80211_wext_giwrts(struct net_device *dev,
 			 struct iw_request_info *info,
 			 struct iw_param *rts, char *extra)
 {
 	struct wireless_dev *wdev = dev->ieee80211_ptr;

 	rts->value = wdev->wiphy->rts_threshold;
 	rts->disabled = rts->value == (u32) -1;
 	rts->fixed = 1;

 	return 0;
 }
 EXPORT_SYMBOL_GPL(cfg80211_wext_giwrts);

 int cfg80211_wext_siwfrag(struct net_device *dev,
 			  struct iw_request_info *info,
 			  struct iw_param *frag, char *extra)
 {
 	struct wireless_dev *wdev = dev->ieee80211_ptr;
 	struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
 	u32 ofrag = wdev->wiphy->frag_threshold;
 	int err;

 	if (frag->disabled || !frag->fixed)
 		wdev->wiphy->frag_threshold = (u32) -1;
 	else if (frag->value < 256)
 		return -EINVAL;
 	else {
 		/* Fragment length must be even, so strip LSB. */
 		wdev->wiphy->frag_threshold = frag->value & ~0x1;
 	}

 	err = rdev->ops->set_wiphy_params(wdev->wiphy,
 					  WIPHY_PARAM_FRAG_THRESHOLD);
 	if (err)
 		wdev->wiphy->frag_threshold = ofrag;

 	return err;
 }
 EXPORT_SYMBOL_GPL(cfg80211_wext_siwfrag);

 int cfg80211_wext_giwfrag(struct net_device *dev,
 			  struct iw_request_info *info,
 			  struct iw_param *frag, char *extra)
 {
 	struct wireless_dev *wdev = dev->ieee80211_ptr;

 	frag->value = wdev->wiphy->frag_threshold;
 	frag->disabled = frag->value == (u32) -1;
 	frag->fixed = 1;

 	return 0;
 }
 EXPORT_SYMBOL_GPL(cfg80211_wext_giwfrag);

 int cfg80211_wext_siwretry(struct net_device *dev,
 			   struct iw_request_info *info,
 			   struct iw_param *retry, char *extra)
 {
 	struct wireless_dev *wdev = dev->ieee80211_ptr;
 	struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
 	u32 changed = 0;
 	u8 olong = wdev->wiphy->retry_long;
 	u8 oshort = wdev->wiphy->retry_short;
 	int err;

 	if (retry->disabled ||
 	    (retry->flags & IW_RETRY_TYPE) != IW_RETRY_LIMIT)
 		return -EINVAL;

 	if (retry->flags & IW_RETRY_LONG) {
 		wdev->wiphy->retry_long = retry->value;
 		changed |= WIPHY_PARAM_RETRY_LONG;
 	} else if (retry->flags & IW_RETRY_SHORT) {
 		wdev->wiphy->retry_short = retry->value;
 		changed |= WIPHY_PARAM_RETRY_SHORT;
 	} else {
 		wdev->wiphy->retry_short = retry->value;
 		wdev->wiphy->retry_long = retry->value;
 		changed |= WIPHY_PARAM_RETRY_LONG;
 		changed |= WIPHY_PARAM_RETRY_SHORT;
 	}

 	if (!changed)
 		return 0;

 	err = rdev->ops->set_wiphy_params(wdev->wiphy, changed);
 	if (err) {
 		wdev->wiphy->retry_short = oshort;
 		wdev->wiphy->retry_long = olong;
 	}

 	return err;
 }
 EXPORT_SYMBOL_GPL(cfg80211_wext_siwretry);

 int cfg80211_wext_giwretry(struct net_device *dev,
 			   struct iw_request_info *info,
 			   struct iw_param *retry, char *extra)
 {
 	struct wireless_dev *wdev = dev->ieee80211_ptr;

 	retry->disabled = 0;

 	if (retry->flags == 0 || (retry->flags & IW_RETRY_SHORT)) {
 		/*
 		 * First return short value, iwconfig will ask long value
 		 * later if needed
 		 */
 		retry->flags |= IW_RETRY_LIMIT;
 		retry->value = wdev->wiphy->retry_short;
 		if (wdev->wiphy->retry_long != wdev->wiphy->retry_short)
 			retry->flags |= IW_RETRY_LONG;

 		return 0;
 	}

 	if (retry->flags & IW_RETRY_LONG) {
 		retry->flags = IW_RETRY_LIMIT | IW_RETRY_LONG;
 		retry->value = wdev->wiphy->retry_long;
 	}

 	return 0;
 }
 EXPORT_SYMBOL_GPL(cfg80211_wext_giwretry);

 static int cfg80211_set_encryption(struct cfg80211_registered_device *rdev,
 				   struct net_device *dev, const u8 *addr,
 				   bool remove, bool tx_key, int idx,
 				   struct key_params *params)
 {
 	struct wireless_dev *wdev = dev->ieee80211_ptr;
 	int err;

 	if (params->cipher == WLAN_CIPHER_SUITE_AES_CMAC) {
 		if (!rdev->ops->set_default_mgmt_key)
 			return -EOPNOTSUPP;

 		if (idx < 4 || idx > 5)
 			return -EINVAL;
 	} else if (idx < 0 || idx > 3)
 		return -EINVAL;

 	if (remove) {
 		err = rdev->ops->del_key(&rdev->wiphy, dev, idx, addr);
 		if (!err) {
 			if (idx == wdev->wext.default_key)
 				wdev->wext.default_key = -1;
 			else if (idx == wdev->wext.default_mgmt_key)
 				wdev->wext.default_mgmt_key = -1;
 		}
 		/*
 		 * Applications using wireless extensions expect to be
 		 * able to delete keys that don't exist, so allow that.
 		 */
 		if (err == -ENOENT)
 			return 0;

 		return err;
 	} else {
 		if (addr)
 			tx_key = false;

 		if (cfg80211_validate_key_settings(params, idx, addr))
 			return -EINVAL;

 		err = rdev->ops->add_key(&rdev->wiphy, dev, idx, addr, params);
 		if (err)
 			return err;

 		if (tx_key || (!addr && wdev->wext.default_key == -1)) {
 			err = rdev->ops->set_default_key(&rdev->wiphy,
 							 dev, idx);
 			if (!err)
 				wdev->wext.default_key = idx;
 			return err;
 		}

 		if (params->cipher == WLAN_CIPHER_SUITE_AES_CMAC &&
 		    (tx_key || (!addr && wdev->wext.default_mgmt_key == -1))) {
 			err = rdev->ops->set_default_mgmt_key(&rdev->wiphy,
 							      dev, idx);
 			if (!err)
 				wdev->wext.default_mgmt_key = idx;
 			return err;
 		}

 		return 0;
 	}
 }

 int cfg80211_wext_siwencode(struct net_device *dev,
 			    struct iw_request_info *info,
 			    struct iw_point *erq, char *keybuf)
 {
 	struct wireless_dev *wdev = dev->ieee80211_ptr;
 	struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
 	int idx, err;
 	bool remove = false;
 	struct key_params params;

 	/* no use -- only MFP (set_default_mgmt_key) is optional */
 	if (!rdev->ops->del_key ||
 	    !rdev->ops->add_key ||
 	    !rdev->ops->set_default_key)
 		return -EOPNOTSUPP;

 	idx = erq->flags & IW_ENCODE_INDEX;
 	if (idx == 0) {
 		idx = wdev->wext.default_key;
 		if (idx < 0)
 			idx = 0;
 	} else if (idx < 1 || idx > 4)
 		return -EINVAL;
 	else
 		idx--;

 	if (erq->flags & IW_ENCODE_DISABLED)
 		remove = true;
 	else if (erq->length == 0) {
 		/* No key data - just set the default TX key index */
 		err = rdev->ops->set_default_key(&rdev->wiphy, dev, idx);
 		if (!err)
 			wdev->wext.default_key = idx;
 		return err;
 	}

 	memset(&params, 0, sizeof(params));
 	params.key = keybuf;
 	params.key_len = erq->length;
 	if (erq->length == 5)
 		params.cipher = WLAN_CIPHER_SUITE_WEP40;
 	else if (erq->length == 13)
 		params.cipher = WLAN_CIPHER_SUITE_WEP104;
 	else if (!remove)
 		return -EINVAL;

 	return cfg80211_set_encryption(rdev, dev, NULL, remove,
 				       wdev->wext.default_key == -1,
 				       idx, &params);
 }
 EXPORT_SYMBOL_GPL(cfg80211_wext_siwencode);

 int cfg80211_wext_siwencodeext(struct net_device *dev,
 			       struct iw_request_info *info,
 			       struct iw_point *erq, char *extra)
 {
 	struct wireless_dev *wdev = dev->ieee80211_ptr;
 	struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
 	struct iw_encode_ext *ext = (struct iw_encode_ext *) extra;
 	const u8 *addr;
 	int idx;
 	bool remove = false;
 	struct key_params params;
 	u32 cipher;

 	/* no use -- only MFP (set_default_mgmt_key) is optional */
 	if (!rdev->ops->del_key ||
 	    !rdev->ops->add_key ||
 	    !rdev->ops->set_default_key)
 		return -EOPNOTSUPP;

 	switch (ext->alg) {
 	case IW_ENCODE_ALG_NONE:
 		remove = true;
 		cipher = 0;
 		break;
 	case IW_ENCODE_ALG_WEP:
 		if (ext->key_len == 5)
 			cipher = WLAN_CIPHER_SUITE_WEP40;
 		else if (ext->key_len == 13)
 			cipher = WLAN_CIPHER_SUITE_WEP104;
 		else
 			return -EINVAL;
 		break;
 	case IW_ENCODE_ALG_TKIP:
 		cipher = WLAN_CIPHER_SUITE_TKIP;
 		break;
 	case IW_ENCODE_ALG_CCMP:
 		cipher = WLAN_CIPHER_SUITE_CCMP;
 		break;
 	case IW_ENCODE_ALG_AES_CMAC:
 		cipher = WLAN_CIPHER_SUITE_AES_CMAC;
 		break;
 	default:
 		return -EOPNOTSUPP;
 	}

 	if (erq->flags & IW_ENCODE_DISABLED)
 		remove = true;

 	idx = erq->flags & IW_ENCODE_INDEX;
 	if (cipher == WLAN_CIPHER_SUITE_AES_CMAC) {
 		if (idx < 4 || idx > 5) {
 			idx = wdev->wext.default_mgmt_key;
 			if (idx < 0)
 				return -EINVAL;
 		} else
 			idx--;
 	} else {
 		if (idx < 1 || idx > 4) {
 			idx = wdev->wext.default_key;
 			if (idx < 0)
 				return -EINVAL;
 		} else
 			idx--;
 	}

 	addr = ext->addr.sa_data;
 	if (is_broadcast_ether_addr(addr))
 		addr = NULL;

 	memset(&params, 0, sizeof(params));
 	params.key = ext->key;
 	params.key_len = ext->key_len;
 	params.cipher = cipher;

 	if (ext->ext_flags & IW_ENCODE_EXT_RX_SEQ_VALID) {
 		params.seq = ext->rx_seq;
 		params.seq_len = 6;
 	}

 	return cfg80211_set_encryption(
 			rdev, dev, addr, remove,
 			ext->ext_flags & IW_ENCODE_EXT_SET_TX_KEY,
 			idx, &params);
 }
 EXPORT_SYMBOL_GPL(cfg80211_wext_siwencodeext);

 struct giwencode_cookie {
 	size_t buflen;
 	char *keybuf;
 };

 static void giwencode_get_key_cb(void *cookie, struct key_params *params)
 {
 	struct giwencode_cookie *data = cookie;

 	if (!params->key) {
 		data->buflen = 0;
 		return;
 	}

 	data->buflen = min_t(size_t, data->buflen, params->key_len);
 	memcpy(data->keybuf, params->key, data->buflen);
 }

 int cfg80211_wext_giwencode(struct net_device *dev,
 			    struct iw_request_info *info,
 			    struct iw_point *erq, char *keybuf)
 {
 	struct wireless_dev *wdev = dev->ieee80211_ptr;
 	struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
 	int idx, err;
 	struct giwencode_cookie data = {
 		.keybuf = keybuf,
 		.buflen = erq->length,
 	};

 	if (!rdev->ops->get_key)
 		return -EOPNOTSUPP;

 	idx = erq->flags & IW_ENCODE_INDEX;
 	if (idx == 0) {
 		idx = wdev->wext.default_key;
 		if (idx < 0)
 			idx = 0;
 	} else if (idx < 1 || idx > 4)
 		return -EINVAL;
 	else
 		idx--;

 	erq->flags = idx + 1;

 	err = rdev->ops->get_key(&rdev->wiphy, dev, idx, NULL, &data,
 				 giwencode_get_key_cb);
 	if (!err) {
 		erq->length = data.buflen;
 		erq->flags |= IW_ENCODE_ENABLED;
 		return 0;
 	}

 	if (err == -ENOENT) {
 		erq->flags |= IW_ENCODE_DISABLED;
 		erq->length = 0;
 		return 0;
 	}

 	return err;
 }
 EXPORT_SYMBOL_GPL(cfg80211_wext_giwencode);

 int cfg80211_wext_siwtxpower(struct net_device *dev,
 			     struct iw_request_info *info,
 			     union iwreq_data *data, char *extra)
 {
 	struct wireless_dev *wdev = dev->ieee80211_ptr;
 	struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
 	enum tx_power_setting type;
 	int dbm = 0;

 	if ((data->txpower.flags & IW_TXPOW_TYPE) != IW_TXPOW_DBM)
 		return -EINVAL;
 	if (data->txpower.flags & IW_TXPOW_RANGE)
 		return -EINVAL;

 	if (!rdev->ops->set_tx_power)
 		return -EOPNOTSUPP;

 	/* only change when not disabling */
 	if (!data->txpower.disabled) {
 		rfkill_set_sw_state(rdev->rfkill, false);

 		if (data->txpower.fixed) {
 			/*
 			 * wext doesn't support negative values, see
 			 * below where it's for automatic
 			 */
 			if (data->txpower.value < 0)
 				return -EINVAL;
 			dbm = data->txpower.value;
 			type = TX_POWER_FIXED;
 			/* TODO: do regulatory check! */
 		} else {
 			/*
 			 * Automatic power level setting, max being the value
 			 * passed in from userland.
 			 */
 			if (data->txpower.value < 0) {
 				type = TX_POWER_AUTOMATIC;
 			} else {
 				dbm = data->txpower.value;
 				type = TX_POWER_LIMITED;
 			}
 		}
 	} else {
 		rfkill_set_sw_state(rdev->rfkill, true);
 		schedule_work(&rdev->rfkill_sync);
 		return 0;
 	}

 	return rdev->ops->set_tx_power(wdev->wiphy, type, dbm);;
 }
 EXPORT_SYMBOL_GPL(cfg80211_wext_siwtxpower);

 int cfg80211_wext_giwtxpower(struct net_device *dev,
 			     struct iw_request_info *info,
 			     union iwreq_data *data, char *extra)
 {
 	struct wireless_dev *wdev = dev->ieee80211_ptr;
 	struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
 	int err, val;

 	if ((data->txpower.flags & IW_TXPOW_TYPE) != IW_TXPOW_DBM)
 		return -EINVAL;
 	if (data->txpower.flags & IW_TXPOW_RANGE)
 		return -EINVAL;

 	if (!rdev->ops->get_tx_power)
 		return -EOPNOTSUPP;

 	err = rdev->ops->get_tx_power(wdev->wiphy, &val);
 	if (err)
 		return err;

 	/* well... oh well */
 	data->txpower.fixed = 1;
 	data->txpower.disabled = rfkill_blocked(rdev->rfkill);
 	data->txpower.value = val;
 	data->txpower.flags = IW_TXPOW_DBM;

 	return 0;
 }
 EXPORT_SYMBOL_GPL(cfg80211_wext_giwtxpower);
	/*
	* cfg80211 - wext compat code
	*
	* This is temporary code until all wireless functionality is migrated
	* into cfg80211, when that happens all the exports here go away and
	* we directly assign the wireless handlers of wireless interfaces.
	*
	* Copyright 2008-2009 Johannes Berg <johannes@sipsolutions.net>
	*/

	#include <linux/wireless.h>
	#include <linux/nl80211.h>
	#include <linux/if_arp.h>
	#include <linux/etherdevice.h>
	#include <net/iw_handler.h>
	#include <net/cfg80211.h>
	#include "core.h"

	int cfg80211_wext_giwname(struct net_device *dev,
	struct iw_request_info *info,
	char name, char extra)
	{
	struct wireless_dev *wdev = dev->ieee80211_ptr;
	struct ieee80211_supported_band *sband;
	bool is_ht = false, is_a = false, is_b = false, is_g = false;

	if (!wdev)
	return -EOPNOTSUPP;

	sband = wdev->wiphy->bands[IEEE80211_BAND_5GHZ];
	if (sband) {
	is_a = true;
	is_ht \|= sband->ht_cap.ht_supported;
	}

	sband = wdev->wiphy->bands[IEEE80211_BAND_2GHZ];
	if (sband) {
	int i;
	/* Check for mandatory rates */
	for (i = 0; i < sband->n_bitrates; i++) {
	if (sband->bitrates[i].bitrate == 10)
	is_b = true;
	if (sband->bitrates[i].bitrate == 60)
	is_g = true;
	}
	is_ht \|= sband->ht_cap.ht_supported;
	}

	strcpy(name, "IEEE 802.11");
	if (is_a)
	strcat(name, "a");
	if (is_b)
	strcat(name, "b");
	if (is_g)
	strcat(name, "g");
	if (is_ht)
	strcat(name, "n");

	return 0;
	}
	EXPORT_SYMBOL_GPL(cfg80211_wext_giwname);

	int cfg80211_wext_siwmode(struct net_device dev, struct iw_request_info info,
	u32 mode, char extra)
	{
	struct wireless_dev *wdev = dev->ieee80211_ptr;
	struct cfg80211_registered_device *rdev;
	struct vif_params vifparams;
	enum nl80211_iftype type;
	int ret;

	if (!wdev)
	return -EOPNOTSUPP;

	rdev = wiphy_to_dev(wdev->wiphy);

	if (!rdev->ops->change_virtual_intf)
	return -EOPNOTSUPP;

	/* don't support changing VLANs, you just re-create them */
	if (wdev->iftype == NL80211_IFTYPE_AP_VLAN)
	return -EOPNOTSUPP;

	switch (*mode) {
	case IW_MODE_INFRA:
	type = NL80211_IFTYPE_STATION;
	break;
	case IW_MODE_ADHOC:
	type = NL80211_IFTYPE_ADHOC;
	break;
	case IW_MODE_REPEAT:
	type = NL80211_IFTYPE_WDS;
	break;
	case IW_MODE_MONITOR:
	type = NL80211_IFTYPE_MONITOR;
	break;
	default:
	return -EINVAL;
	}

	if (type == wdev->iftype)
	return 0;

	memset(&vifparams, 0, sizeof(vifparams));

	ret = rdev->ops->change_virtual_intf(wdev->wiphy, dev->ifindex, type,
	NULL, &vifparams);
	WARN_ON(!ret && wdev->iftype != type);

	return ret;
	}
	EXPORT_SYMBOL_GPL(cfg80211_wext_siwmode);

	int cfg80211_wext_giwmode(struct net_device dev, struct iw_request_info info,
	u32 mode, char extra)
	{
	struct wireless_dev *wdev = dev->ieee80211_ptr;

	if (!wdev)
	return -EOPNOTSUPP;

	switch (wdev->iftype) {
	case NL80211_IFTYPE_AP:
	*mode = IW_MODE_MASTER;
	break;
	case NL80211_IFTYPE_STATION:
	*mode = IW_MODE_INFRA;
	break;
	case NL80211_IFTYPE_ADHOC:
	*mode = IW_MODE_ADHOC;
	break;
	case NL80211_IFTYPE_MONITOR:
	*mode = IW_MODE_MONITOR;
	break;
	case NL80211_IFTYPE_WDS:
	*mode = IW_MODE_REPEAT;
	break;
	case NL80211_IFTYPE_AP_VLAN:
	mode = IW_MODE_SECOND; / FIXME */
	break;
	default:
	*mode = IW_MODE_AUTO;
	break;
	}
	return 0;
	}
	EXPORT_SYMBOL_GPL(cfg80211_wext_giwmode);


	int cfg80211_wext_giwrange(struct net_device *dev,
	struct iw_request_info *info,
	struct iw_point data, char extra)
	{
	struct wireless_dev *wdev = dev->ieee80211_ptr;
	struct iw_range range = (struct iw_range ) extra;
	enum ieee80211_band band;
	int c = 0;

	if (!wdev)
	return -EOPNOTSUPP;

	data->length = sizeof(struct iw_range);
	memset(range, 0, sizeof(struct iw_range));

	range->we_version_compiled = WIRELESS_EXT;
	range->we_version_source = 21;
	range->retry_capa = IW_RETRY_LIMIT;
	range->retry_flags = IW_RETRY_LIMIT;
	range->min_retry = 0;
	range->max_retry = 255;
	range->min_rts = 0;
	range->max_rts = 2347;
	range->min_frag = 256;
	range->max_frag = 2346;

	range->encoding_size[0] = 5;
	range->encoding_size[1] = 13;
	range->num_encoding_sizes = 2;
	range->max_encoding_tokens = 4;

	range->max_qual.updated = IW_QUAL_NOISE_INVALID;

	switch (wdev->wiphy->signal_type) {
	case CFG80211_SIGNAL_TYPE_NONE:
	break;
	case CFG80211_SIGNAL_TYPE_MBM:
	range->max_qual.level = -110;
	range->max_qual.qual = 70;
	range->avg_qual.qual = 35;
	range->max_qual.updated \|= IW_QUAL_DBM;
	range->max_qual.updated \|= IW_QUAL_QUAL_UPDATED;
	range->max_qual.updated \|= IW_QUAL_LEVEL_UPDATED;
	break;
	case CFG80211_SIGNAL_TYPE_UNSPEC:
	range->max_qual.level = 100;
	range->max_qual.qual = 100;
	range->avg_qual.qual = 50;
	range->max_qual.updated \|= IW_QUAL_QUAL_UPDATED;
	range->max_qual.updated \|= IW_QUAL_LEVEL_UPDATED;
	break;
	}

	range->avg_qual.level = range->max_qual.level / 2;
	range->avg_qual.noise = range->max_qual.noise / 2;
	range->avg_qual.updated = range->max_qual.updated;

	range->enc_capa = IW_ENC_CAPA_WPA \| IW_ENC_CAPA_WPA2 \|
	IW_ENC_CAPA_CIPHER_TKIP \| IW_ENC_CAPA_CIPHER_CCMP;

	for (band = 0; band < IEEE80211_NUM_BANDS; band ++) {
	int i;
	struct ieee80211_supported_band *sband;

	sband = wdev->wiphy->bands[band];

	if (!sband)
	continue;

	for (i = 0; i < sband->n_channels && c < IW_MAX_FREQUENCIES; i++) {
	struct ieee80211_channel *chan = &sband->channels[i];

	if (!(chan->flags & IEEE80211_CHAN_DISABLED)) {
	range->freq[c].i =
	ieee80211_frequency_to_channel(
	chan->center_freq);
	range->freq[c].m = chan->center_freq;
	range->freq[c].e = 6;
	c++;
	}
	}
	}
	range->num_channels = c;
	range->num_frequency = c;

	IW_EVENT_CAPA_SET_KERNEL(range->event_capa);
	IW_EVENT_CAPA_SET(range->event_capa, SIOCGIWAP);
	IW_EVENT_CAPA_SET(range->event_capa, SIOCGIWSCAN);

	range->scan_capa \|= IW_SCAN_CAPA_ESSID;

	return 0;
	}
	EXPORT_SYMBOL_GPL(cfg80211_wext_giwrange);

	int cfg80211_wext_siwmlme(struct net_device *dev,
	struct iw_request_info *info,
	struct iw_point data, char extra)
	{
	struct wireless_dev *wdev = dev->ieee80211_ptr;
	struct iw_mlme mlme = (struct iw_mlme )extra;
	struct cfg80211_registered_device *rdev;
	union {
	struct cfg80211_disassoc_request disassoc;
	struct cfg80211_deauth_request deauth;
	} cmd;

	if (!wdev)
	return -EOPNOTSUPP;

	rdev = wiphy_to_dev(wdev->wiphy);

	if (wdev->iftype != NL80211_IFTYPE_STATION)
	return -EINVAL;

	if (mlme->addr.sa_family != ARPHRD_ETHER)
	return -EINVAL;

	memset(&cmd, 0, sizeof(cmd));

	switch (mlme->cmd) {
	case IW_MLME_DEAUTH:
	if (!rdev->ops->deauth)
	return -EOPNOTSUPP;
	cmd.deauth.peer_addr = mlme->addr.sa_data;
	cmd.deauth.reason_code = mlme->reason_code;
	return rdev->ops->deauth(wdev->wiphy, dev, &cmd.deauth);
	case IW_MLME_DISASSOC:
	if (!rdev->ops->disassoc)
	return -EOPNOTSUPP;
	cmd.disassoc.peer_addr = mlme->addr.sa_data;
	cmd.disassoc.reason_code = mlme->reason_code;
	return rdev->ops->disassoc(wdev->wiphy, dev, &cmd.disassoc);
	default:
	return -EOPNOTSUPP;
	}
	}
	EXPORT_SYMBOL_GPL(cfg80211_wext_siwmlme);


	/**
	* cfg80211_wext_freq - get wext frequency for non-"auto"
	* @wiphy: the wiphy
	* @freq: the wext freq encoding
	*
	* Returns a channel, %NULL for auto, or an ERR_PTR for errors!
	*/
	struct ieee80211_channel cfg80211_wext_freq(struct wiphy wiphy,
	struct iw_freq *freq)
	{
	struct ieee80211_channel *chan;
	int f;

	/*
	* Parse frequency - return NULL for auto and
	* -EINVAL for impossible things.
	*/
	if (freq->e == 0) {
	if (freq->m < 0)
	return NULL;
	f = ieee80211_channel_to_frequency(freq->m);
	} else {
	int i, div = 1000000;
	for (i = 0; i < freq->e; i++)
	div /= 10;
	if (div <= 0)
	return ERR_PTR(-EINVAL);
	f = freq->m / div;
	}

	/*
	* Look up channel struct and return -EINVAL when
	* it cannot be found.
	*/
	chan = ieee80211_get_channel(wiphy, f);
	if (!chan)
	return ERR_PTR(-EINVAL);
	return chan;
	}
	EXPORT_SYMBOL_GPL(cfg80211_wext_freq);

	int cfg80211_wext_siwrts(struct net_device *dev,
	struct iw_request_info *info,
	struct iw_param rts, char extra)
	{
	struct wireless_dev *wdev = dev->ieee80211_ptr;
	struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
	u32 orts = wdev->wiphy->rts_threshold;
	int err;

	if (rts->disabled \|\| !rts->fixed)
	wdev->wiphy->rts_threshold = (u32) -1;
	else if (rts->value < 0)
	return -EINVAL;
	else
	wdev->wiphy->rts_threshold = rts->value;

	err = rdev->ops->set_wiphy_params(wdev->wiphy,
	WIPHY_PARAM_RTS_THRESHOLD);
	if (err)
	wdev->wiphy->rts_threshold = orts;

	return err;
	}
	EXPORT_SYMBOL_GPL(cfg80211_wext_siwrts);

	int cfg80211_wext_giwrts(struct net_device *dev,
	struct iw_request_info *info,
	struct iw_param rts, char extra)
	{
	struct wireless_dev *wdev = dev->ieee80211_ptr;

	rts->value = wdev->wiphy->rts_threshold;
	rts->disabled = rts->value == (u32) -1;
	rts->fixed = 1;

	return 0;
	}
	EXPORT_SYMBOL_GPL(cfg80211_wext_giwrts);

	int cfg80211_wext_siwfrag(struct net_device *dev,
	struct iw_request_info *info,
	struct iw_param frag, char extra)
	{
	struct wireless_dev *wdev = dev->ieee80211_ptr;
	struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
	u32 ofrag = wdev->wiphy->frag_threshold;
	int err;

	if (frag->disabled \|\| !frag->fixed)
	wdev->wiphy->frag_threshold = (u32) -1;
	else if (frag->value < 256)
	return -EINVAL;
	else {
	/* Fragment length must be even, so strip LSB. */
	wdev->wiphy->frag_threshold = frag->value & ~0x1;
	}

	err = rdev->ops->set_wiphy_params(wdev->wiphy,
	WIPHY_PARAM_FRAG_THRESHOLD);
	if (err)
	wdev->wiphy->frag_threshold = ofrag;

	return err;
	}
	EXPORT_SYMBOL_GPL(cfg80211_wext_siwfrag);

	int cfg80211_wext_giwfrag(struct net_device *dev,
	struct iw_request_info *info,
	struct iw_param frag, char extra)
	{
	struct wireless_dev *wdev = dev->ieee80211_ptr;

	frag->value = wdev->wiphy->frag_threshold;
	frag->disabled = frag->value == (u32) -1;
	frag->fixed = 1;

	return 0;
	}
	EXPORT_SYMBOL_GPL(cfg80211_wext_giwfrag);

	int cfg80211_wext_siwretry(struct net_device *dev,
	struct iw_request_info *info,
	struct iw_param retry, char extra)
	{
	struct wireless_dev *wdev = dev->ieee80211_ptr;
	struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
	u32 changed = 0;
	u8 olong = wdev->wiphy->retry_long;
	u8 oshort = wdev->wiphy->retry_short;
	int err;

	if (retry->disabled \|\|
	(retry->flags & IW_RETRY_TYPE) != IW_RETRY_LIMIT)
	return -EINVAL;

	if (retry->flags & IW_RETRY_LONG) {
	wdev->wiphy->retry_long = retry->value;
	changed \|= WIPHY_PARAM_RETRY_LONG;
	} else if (retry->flags & IW_RETRY_SHORT) {
	wdev->wiphy->retry_short = retry->value;
	changed \|= WIPHY_PARAM_RETRY_SHORT;
	} else {
	wdev->wiphy->retry_short = retry->value;
	wdev->wiphy->retry_long = retry->value;
	changed \|= WIPHY_PARAM_RETRY_LONG;
	changed \|= WIPHY_PARAM_RETRY_SHORT;
	}

	if (!changed)
	return 0;

	err = rdev->ops->set_wiphy_params(wdev->wiphy, changed);
	if (err) {
	wdev->wiphy->retry_short = oshort;
	wdev->wiphy->retry_long = olong;
	}

	return err;
	}
	EXPORT_SYMBOL_GPL(cfg80211_wext_siwretry);

	int cfg80211_wext_giwretry(struct net_device *dev,
	struct iw_request_info *info,
	struct iw_param retry, char extra)
	{
	struct wireless_dev *wdev = dev->ieee80211_ptr;

	retry->disabled = 0;

	if (retry->flags == 0 \|\| (retry->flags & IW_RETRY_SHORT)) {
	/*
	* First return short value, iwconfig will ask long value
	* later if needed
	*/
	retry->flags \|= IW_RETRY_LIMIT;
	retry->value = wdev->wiphy->retry_short;
	if (wdev->wiphy->retry_long != wdev->wiphy->retry_short)
	retry->flags \|= IW_RETRY_LONG;

	return 0;
	}

	if (retry->flags & IW_RETRY_LONG) {
	retry->flags = IW_RETRY_LIMIT \| IW_RETRY_LONG;
	retry->value = wdev->wiphy->retry_long;
	}

	return 0;
	}
	EXPORT_SYMBOL_GPL(cfg80211_wext_giwretry);

	static int cfg80211_set_encryption(struct cfg80211_registered_device *rdev,
	struct net_device dev, const u8 addr,
	bool remove, bool tx_key, int idx,
	struct key_params *params)
	{
	struct wireless_dev *wdev = dev->ieee80211_ptr;
	int err;

	if (params->cipher == WLAN_CIPHER_SUITE_AES_CMAC) {
	if (!rdev->ops->set_default_mgmt_key)
	return -EOPNOTSUPP;

	if (idx < 4 \|\| idx > 5)
	return -EINVAL;
	} else if (idx < 0 \|\| idx > 3)
	return -EINVAL;

	if (remove) {
	err = rdev->ops->del_key(&rdev->wiphy, dev, idx, addr);
	if (!err) {
	if (idx == wdev->wext.default_key)
	wdev->wext.default_key = -1;
	else if (idx == wdev->wext.default_mgmt_key)
	wdev->wext.default_mgmt_key = -1;
	}
	/*
	* Applications using wireless extensions expect to be
	* able to delete keys that don't exist, so allow that.
	*/
	if (err == -ENOENT)
	return 0;

	return err;
	} else {
	if (addr)
	tx_key = false;

	if (cfg80211_validate_key_settings(params, idx, addr))
	return -EINVAL;

	err = rdev->ops->add_key(&rdev->wiphy, dev, idx, addr, params);
	if (err)
	return err;

	if (tx_key \|\| (!addr && wdev->wext.default_key == -1)) {
	err = rdev->ops->set_default_key(&rdev->wiphy,
	dev, idx);
	if (!err)
	wdev->wext.default_key = idx;
	return err;
	}

	if (params->cipher == WLAN_CIPHER_SUITE_AES_CMAC &&
	(tx_key \|\| (!addr && wdev->wext.default_mgmt_key == -1))) {
	err = rdev->ops->set_default_mgmt_key(&rdev->wiphy,
	dev, idx);
	if (!err)
	wdev->wext.default_mgmt_key = idx;
	return err;
	}

	return 0;
	}
	}

	int cfg80211_wext_siwencode(struct net_device *dev,
	struct iw_request_info *info,
	struct iw_point erq, char keybuf)
	{
	struct wireless_dev *wdev = dev->ieee80211_ptr;
	struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
	int idx, err;
	bool remove = false;
	struct key_params params;

	/* no use -- only MFP (set_default_mgmt_key) is optional */
	if (!rdev->ops->del_key \|\|
	!rdev->ops->add_key \|\|
	!rdev->ops->set_default_key)
	return -EOPNOTSUPP;

	idx = erq->flags & IW_ENCODE_INDEX;
	if (idx == 0) {
	idx = wdev->wext.default_key;
	if (idx < 0)
	idx = 0;
	} else if (idx < 1 \|\| idx > 4)
	return -EINVAL;
	else
	idx--;

	if (erq->flags & IW_ENCODE_DISABLED)
	remove = true;
	else if (erq->length == 0) {
	/* No key data - just set the default TX key index */
	err = rdev->ops->set_default_key(&rdev->wiphy, dev, idx);
	if (!err)
	wdev->wext.default_key = idx;
	return err;
	}

	memset(&params, 0, sizeof(params));
	params.key = keybuf;
	params.key_len = erq->length;
	if (erq->length == 5)
	params.cipher = WLAN_CIPHER_SUITE_WEP40;
	else if (erq->length == 13)
	params.cipher = WLAN_CIPHER_SUITE_WEP104;
	else if (!remove)
	return -EINVAL;

	return cfg80211_set_encryption(rdev, dev, NULL, remove,
	wdev->wext.default_key == -1,
	idx, &params);
	}
	EXPORT_SYMBOL_GPL(cfg80211_wext_siwencode);

	int cfg80211_wext_siwencodeext(struct net_device *dev,
	struct iw_request_info *info,
	struct iw_point erq, char extra)
	{
	struct wireless_dev *wdev = dev->ieee80211_ptr;
	struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
	struct iw_encode_ext ext = (struct iw_encode_ext ) extra;
	const u8 *addr;
	int idx;
	bool remove = false;
	struct key_params params;
	u32 cipher;

	/* no use -- only MFP (set_default_mgmt_key) is optional */
	if (!rdev->ops->del_key \|\|
	!rdev->ops->add_key \|\|
	!rdev->ops->set_default_key)
	return -EOPNOTSUPP;

	switch (ext->alg) {
	case IW_ENCODE_ALG_NONE:
	remove = true;
	cipher = 0;
	break;
	case IW_ENCODE_ALG_WEP:
	if (ext->key_len == 5)
	cipher = WLAN_CIPHER_SUITE_WEP40;
	else if (ext->key_len == 13)
	cipher = WLAN_CIPHER_SUITE_WEP104;
	else
	return -EINVAL;
	break;
	case IW_ENCODE_ALG_TKIP:
	cipher = WLAN_CIPHER_SUITE_TKIP;
	break;
	case IW_ENCODE_ALG_CCMP:
	cipher = WLAN_CIPHER_SUITE_CCMP;
	break;
	case IW_ENCODE_ALG_AES_CMAC:
	cipher = WLAN_CIPHER_SUITE_AES_CMAC;
	break;
	default:
	return -EOPNOTSUPP;
	}

	if (erq->flags & IW_ENCODE_DISABLED)
	remove = true;

	idx = erq->flags & IW_ENCODE_INDEX;
	if (cipher == WLAN_CIPHER_SUITE_AES_CMAC) {
	if (idx < 4 \|\| idx > 5) {
	idx = wdev->wext.default_mgmt_key;
	if (idx < 0)
	return -EINVAL;
	} else
	idx--;
	} else {
	if (idx < 1 \|\| idx > 4) {
	idx = wdev->wext.default_key;
	if (idx < 0)
	return -EINVAL;
	} else
	idx--;
	}

	addr = ext->addr.sa_data;
	if (is_broadcast_ether_addr(addr))
	addr = NULL;

	memset(&params, 0, sizeof(params));
	params.key = ext->key;
	params.key_len = ext->key_len;
	params.cipher = cipher;

	if (ext->ext_flags & IW_ENCODE_EXT_RX_SEQ_VALID) {
	params.seq = ext->rx_seq;
	params.seq_len = 6;
	}

	return cfg80211_set_encryption(
	rdev, dev, addr, remove,
	ext->ext_flags & IW_ENCODE_EXT_SET_TX_KEY,
	idx, &params);
	}
	EXPORT_SYMBOL_GPL(cfg80211_wext_siwencodeext);

	struct giwencode_cookie {
	size_t buflen;
	char *keybuf;
	};

	static void giwencode_get_key_cb(void cookie, struct key_params params)
	{
	struct giwencode_cookie *data = cookie;

	if (!params->key) {
	data->buflen = 0;
	return;
	}

	data->buflen = min_t(size_t, data->buflen, params->key_len);
	memcpy(data->keybuf, params->key, data->buflen);
	}

	int cfg80211_wext_giwencode(struct net_device *dev,
	struct iw_request_info *info,
	struct iw_point erq, char keybuf)
	{
	struct wireless_dev *wdev = dev->ieee80211_ptr;
	struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
	int idx, err;
	struct giwencode_cookie data = {
	.keybuf = keybuf,
	.buflen = erq->length,
	};

	if (!rdev->ops->get_key)
	return -EOPNOTSUPP;

	idx = erq->flags & IW_ENCODE_INDEX;
	if (idx == 0) {
	idx = wdev->wext.default_key;
	if (idx < 0)
	idx = 0;
	} else if (idx < 1 \|\| idx > 4)
	return -EINVAL;
	else
	idx--;

	erq->flags = idx + 1;

	err = rdev->ops->get_key(&rdev->wiphy, dev, idx, NULL, &data,
	giwencode_get_key_cb);
	if (!err) {
	erq->length = data.buflen;
	erq->flags \|= IW_ENCODE_ENABLED;
	return 0;
	}

	if (err == -ENOENT) {
	erq->flags \|= IW_ENCODE_DISABLED;
	erq->length = 0;
	return 0;
	}

	return err;
	}
	EXPORT_SYMBOL_GPL(cfg80211_wext_giwencode);

	int cfg80211_wext_siwtxpower(struct net_device *dev,
	struct iw_request_info *info,
	union iwreq_data data, char extra)
	{
	struct wireless_dev *wdev = dev->ieee80211_ptr;
	struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
	enum tx_power_setting type;
	int dbm = 0;

	if ((data->txpower.flags & IW_TXPOW_TYPE) != IW_TXPOW_DBM)
	return -EINVAL;
	if (data->txpower.flags & IW_TXPOW_RANGE)
	return -EINVAL;

	if (!rdev->ops->set_tx_power)
	return -EOPNOTSUPP;

	/* only change when not disabling */
	if (!data->txpower.disabled) {
	rfkill_set_sw_state(rdev->rfkill, false);

	if (data->txpower.fixed) {
	/*
	* wext doesn't support negative values, see
	* below where it's for automatic
	*/
	if (data->txpower.value < 0)
	return -EINVAL;
	dbm = data->txpower.value;
	type = TX_POWER_FIXED;
	/* TODO: do regulatory check! */
	} else {
	/*
	* Automatic power level setting, max being the value
	* passed in from userland.
	*/
	if (data->txpower.value < 0) {
	type = TX_POWER_AUTOMATIC;
	} else {
	dbm = data->txpower.value;
	type = TX_POWER_LIMITED;
	}
	}
	} else {
	rfkill_set_sw_state(rdev->rfkill, true);
	schedule_work(&rdev->rfkill_sync);
	return 0;
	}

	return rdev->ops->set_tx_power(wdev->wiphy, type, dbm);;
	}
	EXPORT_SYMBOL_GPL(cfg80211_wext_siwtxpower);

	int cfg80211_wext_giwtxpower(struct net_device *dev,
	struct iw_request_info *info,
	union iwreq_data data, char extra)
	{
	struct wireless_dev *wdev = dev->ieee80211_ptr;
	struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
	int err, val;

	if ((data->txpower.flags & IW_TXPOW_TYPE) != IW_TXPOW_DBM)
	return -EINVAL;
	if (data->txpower.flags & IW_TXPOW_RANGE)
	return -EINVAL;

	if (!rdev->ops->get_tx_power)
	return -EOPNOTSUPP;

	err = rdev->ops->get_tx_power(wdev->wiphy, &val);
	if (err)
	return err;

	/* well... oh well */
	data->txpower.fixed = 1;
	data->txpower.disabled = rfkill_blocked(rdev->rfkill);
	data->txpower.value = val;
	data->txpower.flags = IW_TXPOW_DBM;

	return 0;
	}
	EXPORT_SYMBOL_GPL(cfg80211_wext_giwtxpower);