net/ieee80211/ieee80211_wx.c - fp2-dev/kernel/msm - Gitiles

 /******************************************************************************

   Copyright(c) 2004 Intel Corporation. All rights reserved.

   Portions of this file are based on the WEP enablement code provided by the
   Host AP project hostap-drivers v0.1.3
   Copyright (c) 2001-2002, SSH Communications Security Corp and Jouni Malinen
   <jkmaline@cc.hut.fi>
   Copyright (c) 2002-2003, Jouni Malinen <jkmaline@cc.hut.fi>

   This program is free software; you can redistribute it and/or modify it
   under the terms of version 2 of the GNU General Public License as
   published by the Free Software Foundation.

   This program is distributed in the hope that it will be useful, but WITHOUT
   ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
   FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
   more details.

   You should have received a copy of the GNU General Public License along with
   this program; if not, write to the Free Software Foundation, Inc., 59
   Temple Place - Suite 330, Boston, MA  02111-1307, USA.

   The full GNU General Public License is included in this distribution in the
   file called LICENSE.

   Contact Information:
   James P. Ketrenos <ipw2100-admin@linux.intel.com>
   Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497

 ******************************************************************************/

 #include <linux/kmod.h>
 #include <linux/module.h>
 #include <linux/jiffies.h>

 #include <net/ieee80211.h>
 #include <linux/wireless.h>

 static const char *ieee80211_modes[] = {
 	"?", "a", "b", "ab", "g", "ag", "bg", "abg"
 };

 #define MAX_CUSTOM_LEN 64
 static inline char *ipw2100_translate_scan(struct ieee80211_device *ieee,
 					   char *start, char *stop,
 					   struct ieee80211_network *network)
 {
 	char custom[MAX_CUSTOM_LEN];
 	char *p;
 	struct iw_event iwe;
 	int i, j;
 	u8 max_rate, rate;

 	/* First entry *MUST* be the AP MAC address */
 	iwe.cmd = SIOCGIWAP;
 	iwe.u.ap_addr.sa_family = ARPHRD_ETHER;
 	memcpy(iwe.u.ap_addr.sa_data, network->bssid, ETH_ALEN);
 	start = iwe_stream_add_event(start, stop, &iwe, IW_EV_ADDR_LEN);

 	/* Remaining entries will be displayed in the order we provide them */

 	/* Add the ESSID */
 	iwe.cmd = SIOCGIWESSID;
 	iwe.u.data.flags = 1;
 	if (network->flags & NETWORK_EMPTY_ESSID) {
 		iwe.u.data.length = sizeof("<hidden>");
 		start = iwe_stream_add_point(start, stop, &iwe, "<hidden>");
 	} else {
 		iwe.u.data.length = min(network->ssid_len, (u8) 32);
 		start = iwe_stream_add_point(start, stop, &iwe, network->ssid);
 	}

 	/* Add the protocol name */
 	iwe.cmd = SIOCGIWNAME;
 	snprintf(iwe.u.name, IFNAMSIZ, "IEEE 802.11%s",
 		 ieee80211_modes[network->mode]);
 	start = iwe_stream_add_event(start, stop, &iwe, IW_EV_CHAR_LEN);

 	/* Add mode */
 	iwe.cmd = SIOCGIWMODE;
 	if (network->capability & (WLAN_CAPABILITY_ESS | WLAN_CAPABILITY_IBSS)) {
 		if (network->capability & WLAN_CAPABILITY_ESS)
 			iwe.u.mode = IW_MODE_MASTER;
 		else
 			iwe.u.mode = IW_MODE_ADHOC;

 		start = iwe_stream_add_event(start, stop, &iwe, IW_EV_UINT_LEN);
 	}

 	/* Add frequency/channel */
 	iwe.cmd = SIOCGIWFREQ;
 /*	iwe.u.freq.m = ieee80211_frequency(network->channel, network->mode);
 	iwe.u.freq.e = 3; */
 	iwe.u.freq.m = network->channel;
 	iwe.u.freq.e = 0;
 	iwe.u.freq.i = 0;
 	start = iwe_stream_add_event(start, stop, &iwe, IW_EV_FREQ_LEN);

 	/* Add encryption capability */
 	iwe.cmd = SIOCGIWENCODE;
 	if (network->capability & WLAN_CAPABILITY_PRIVACY)
 		iwe.u.data.flags = IW_ENCODE_ENABLED | IW_ENCODE_NOKEY;
 	else
 		iwe.u.data.flags = IW_ENCODE_DISABLED;
 	iwe.u.data.length = 0;
 	start = iwe_stream_add_point(start, stop, &iwe, network->ssid);

 	/* Add basic and extended rates */
 	max_rate = 0;
 	p = custom;
 	p += snprintf(p, MAX_CUSTOM_LEN - (p - custom), " Rates (Mb/s): ");
 	for (i = 0, j = 0; i < network->rates_len;) {
 		if (j < network->rates_ex_len &&
 		    ((network->rates_ex[j] & 0x7F) <
 		     (network->rates[i] & 0x7F)))
 			rate = network->rates_ex[j++] & 0x7F;
 		else
 			rate = network->rates[i++] & 0x7F;
 		if (rate > max_rate)
 			max_rate = rate;
 		p += snprintf(p, MAX_CUSTOM_LEN - (p - custom),
 			      "%d%s ", rate >> 1, (rate & 1) ? ".5" : "");
 	}
 	for (; j < network->rates_ex_len; j++) {
 		rate = network->rates_ex[j] & 0x7F;
 		p += snprintf(p, MAX_CUSTOM_LEN - (p - custom),
 			      "%d%s ", rate >> 1, (rate & 1) ? ".5" : "");
 		if (rate > max_rate)
 			max_rate = rate;
 	}

 	iwe.cmd = SIOCGIWRATE;
 	iwe.u.bitrate.fixed = iwe.u.bitrate.disabled = 0;
 	iwe.u.bitrate.value = max_rate * 500000;
 	start = iwe_stream_add_event(start, stop, &iwe, IW_EV_PARAM_LEN);

 	iwe.cmd = IWEVCUSTOM;
 	iwe.u.data.length = p - custom;
 	if (iwe.u.data.length)
 		start = iwe_stream_add_point(start, stop, &iwe, custom);

 	/* Add quality statistics */
 	iwe.cmd = IWEVQUAL;
 	iwe.u.qual.updated = IW_QUAL_QUAL_UPDATED | IW_QUAL_LEVEL_UPDATED |
 	    IW_QUAL_NOISE_UPDATED;

 	if (!(network->stats.mask & IEEE80211_STATMASK_RSSI)) {
 		iwe.u.qual.updated |= IW_QUAL_QUAL_INVALID |
 		    IW_QUAL_LEVEL_INVALID;
 		iwe.u.qual.qual = 0;
 		iwe.u.qual.level = 0;
 	} else {
 		iwe.u.qual.level = network->stats.rssi;
 		iwe.u.qual.qual =
 		    (100 *
 		     (ieee->perfect_rssi - ieee->worst_rssi) *
 		     (ieee->perfect_rssi - ieee->worst_rssi) -
 		     (ieee->perfect_rssi - network->stats.rssi) *
 		     (15 * (ieee->perfect_rssi - ieee->worst_rssi) +
 		      62 * (ieee->perfect_rssi - network->stats.rssi))) /
 		    ((ieee->perfect_rssi - ieee->worst_rssi) *
 		     (ieee->perfect_rssi - ieee->worst_rssi));
 		if (iwe.u.qual.qual > 100)
 			iwe.u.qual.qual = 100;
 		else if (iwe.u.qual.qual < 1)
 			iwe.u.qual.qual = 0;
 	}

 	if (!(network->stats.mask & IEEE80211_STATMASK_NOISE)) {
 		iwe.u.qual.updated |= IW_QUAL_NOISE_INVALID;
 		iwe.u.qual.noise = 0;
 	} else {
 		iwe.u.qual.noise = network->stats.noise;
 	}

 	start = iwe_stream_add_event(start, stop, &iwe, IW_EV_QUAL_LEN);

 	iwe.cmd = IWEVCUSTOM;
 	p = custom;

 	iwe.u.data.length = p - custom;
 	if (iwe.u.data.length)
 		start = iwe_stream_add_point(start, stop, &iwe, custom);

 	if (network->wpa_ie_len) {
 		char buf[MAX_WPA_IE_LEN * 2 + 30];

 		u8 *p = buf;
 		p += sprintf(p, "wpa_ie=");
 		for (i = 0; i < network->wpa_ie_len; i++) {
 			p += sprintf(p, "%02x", network->wpa_ie[i]);
 		}

 		memset(&iwe, 0, sizeof(iwe));
 		iwe.cmd = IWEVCUSTOM;
 		iwe.u.data.length = strlen(buf);
 		start = iwe_stream_add_point(start, stop, &iwe, buf);
 	}

 	if (network->rsn_ie_len) {
 		char buf[MAX_WPA_IE_LEN * 2 + 30];

 		u8 *p = buf;
 		p += sprintf(p, "rsn_ie=");
 		for (i = 0; i < network->rsn_ie_len; i++) {
 			p += sprintf(p, "%02x", network->rsn_ie[i]);
 		}

 		memset(&iwe, 0, sizeof(iwe));
 		iwe.cmd = IWEVCUSTOM;
 		iwe.u.data.length = strlen(buf);
 		start = iwe_stream_add_point(start, stop, &iwe, buf);
 	}

 	/* Add EXTRA: Age to display seconds since last beacon/probe response
 	 * for given network. */
 	iwe.cmd = IWEVCUSTOM;
 	p = custom;
 	p += snprintf(p, MAX_CUSTOM_LEN - (p - custom),
 		      " Last beacon: %dms ago",
 		      jiffies_to_msecs(jiffies - network->last_scanned));
 	iwe.u.data.length = p - custom;
 	if (iwe.u.data.length)
 		start = iwe_stream_add_point(start, stop, &iwe, custom);

 	return start;
 }

 int ieee80211_wx_get_scan(struct ieee80211_device *ieee,
 			  struct iw_request_info *info,
 			  union iwreq_data *wrqu, char *extra)
 {
 	struct ieee80211_network *network;
 	unsigned long flags;

 	char *ev = extra;
 	char *stop = ev + IW_SCAN_MAX_DATA;
 	int i = 0;

 	IEEE80211_DEBUG_WX("Getting scan\n");

 	spin_lock_irqsave(&ieee->lock, flags);

 	list_for_each_entry(network, &ieee->network_list, list) {
 		i++;
 		if (ieee->scan_age == 0 ||
 		    time_after(network->last_scanned + ieee->scan_age, jiffies))
 			ev = ipw2100_translate_scan(ieee, ev, stop, network);
 		else
 			IEEE80211_DEBUG_SCAN("Not showing network '%s ("
 					     MAC_FMT ")' due to age (%dms).\n",
 					     escape_essid(network->ssid,
 							  network->ssid_len),
 					     MAC_ARG(network->bssid),
 					     jiffies_to_msecs(jiffies -
 							      network->
 							      last_scanned));
 	}

 	spin_unlock_irqrestore(&ieee->lock, flags);

 	wrqu->data.length = ev - extra;
 	wrqu->data.flags = 0;

 	IEEE80211_DEBUG_WX("exit: %d networks returned.\n", i);

 	return 0;
 }

 int ieee80211_wx_set_encode(struct ieee80211_device *ieee,
 			    struct iw_request_info *info,
 			    union iwreq_data *wrqu, char *keybuf)
 {
 	struct iw_point *erq = &(wrqu->encoding);
 	struct net_device *dev = ieee->dev;
 	struct ieee80211_security sec = {
 		.flags = 0
 	};
 	int i, key, key_provided, len;
 	struct ieee80211_crypt_data **crypt;
 	int host_crypto = ieee->host_encrypt || ieee->host_decrypt;

 	IEEE80211_DEBUG_WX("SET_ENCODE\n");

 	key = erq->flags & IW_ENCODE_INDEX;
 	if (key) {
 		if (key > WEP_KEYS)
 			return -EINVAL;
 		key--;
 		key_provided = 1;
 	} else {
 		key_provided = 0;
 		key = ieee->tx_keyidx;
 	}

 	IEEE80211_DEBUG_WX("Key: %d [%s]\n", key, key_provided ?
 			   "provided" : "default");

 	crypt = &ieee->crypt[key];

 	if (erq->flags & IW_ENCODE_DISABLED) {
 		if (key_provided && *crypt) {
 			IEEE80211_DEBUG_WX("Disabling encryption on key %d.\n",
 					   key);
 			ieee80211_crypt_delayed_deinit(ieee, crypt);
 		} else
 			IEEE80211_DEBUG_WX("Disabling encryption.\n");

 		/* Check all the keys to see if any are still configured,
 		 * and if no key index was provided, de-init them all */
 		for (i = 0; i < WEP_KEYS; i++) {
 			if (ieee->crypt[i] != NULL) {
 				if (key_provided)
 					break;
 				ieee80211_crypt_delayed_deinit(ieee,
 							       &ieee->crypt[i]);
 			}
 		}

 		if (i == WEP_KEYS) {
 			sec.enabled = 0;
 			sec.encrypt = 0;
 			sec.level = SEC_LEVEL_0;
 			sec.flags |= SEC_ENABLED | SEC_LEVEL;
 		}

 		goto done;
 	}

 	sec.enabled = 1;
 	sec.encrypt = 1;
 	sec.flags |= SEC_ENABLED;

 	if (*crypt != NULL && (*crypt)->ops != NULL &&
 	    strcmp((*crypt)->ops->name, "WEP") != 0) {
 		/* changing to use WEP; deinit previously used algorithm
 		 * on this key */
 		ieee80211_crypt_delayed_deinit(ieee, crypt);
 	}

 	if (*crypt == NULL && host_crypto) {
 		struct ieee80211_crypt_data *new_crypt;

 		/* take WEP into use */
 		new_crypt = kmalloc(sizeof(struct ieee80211_crypt_data),
 				    GFP_KERNEL);
 		if (new_crypt == NULL)
 			return -ENOMEM;
 		memset(new_crypt, 0, sizeof(struct ieee80211_crypt_data));
 		new_crypt->ops = ieee80211_get_crypto_ops("WEP");
 		if (!new_crypt->ops) {
 			request_module("ieee80211_crypt_wep");
 			new_crypt->ops = ieee80211_get_crypto_ops("WEP");
 		}

 		if (new_crypt->ops && try_module_get(new_crypt->ops->owner))
 			new_crypt->priv = new_crypt->ops->init(ieee, key);

 		if (!new_crypt->ops || !new_crypt->priv) {
 			kfree(new_crypt);
 			new_crypt = NULL;

 			printk(KERN_WARNING "%s: could not initialize WEP: "
 			       "load module ieee80211_crypt_wep\n", dev->name);
 			return -EOPNOTSUPP;
 		}
 		*crypt = new_crypt;
 	}

 	/* If a new key was provided, set it up */
 	if (erq->length > 0) {
 		len = erq->length <= 5 ? 5 : 13;
 		memcpy(sec.keys[key], keybuf, erq->length);
 		if (len > erq->length)
 			memset(sec.keys[key] + erq->length, 0,
 			       len - erq->length);
 		IEEE80211_DEBUG_WX("Setting key %d to '%s' (%d:%d bytes)\n",
 				   key, escape_essid(sec.keys[key], len),
 				   erq->length, len);
 		sec.key_sizes[key] = len;
 		if (*crypt)
 			(*crypt)->ops->set_key(sec.keys[key], len, NULL,
 					       (*crypt)->priv);
 		sec.flags |= (1 << key);
 		/* This ensures a key will be activated if no key is
 		 * explicitely set */
 		if (key == sec.active_key)
 			sec.flags |= SEC_ACTIVE_KEY;

 	} else {
 		if (host_crypto) {
 			len = (*crypt)->ops->get_key(sec.keys[key], WEP_KEY_LEN,
 						     NULL, (*crypt)->priv);
 			if (len == 0) {
 				/* Set a default key of all 0 */
 				IEEE80211_DEBUG_WX("Setting key %d to all "
 						   "zero.\n", key);
 				memset(sec.keys[key], 0, 13);
 				(*crypt)->ops->set_key(sec.keys[key], 13, NULL,
 						       (*crypt)->priv);
 				sec.key_sizes[key] = 13;
 				sec.flags |= (1 << key);
 			}
 		}
 		/* No key data - just set the default TX key index */
 		if (key_provided) {
 			IEEE80211_DEBUG_WX("Setting key %d to default Tx "
 					   "key.\n", key);
 			ieee->tx_keyidx = key;
 			sec.active_key = key;
 			sec.flags |= SEC_ACTIVE_KEY;
 		}
 	}

       done:
 	ieee->open_wep = !(erq->flags & IW_ENCODE_RESTRICTED);
 	sec.auth_mode = ieee->open_wep ? WLAN_AUTH_OPEN : WLAN_AUTH_SHARED_KEY;
 	sec.flags |= SEC_AUTH_MODE;
 	IEEE80211_DEBUG_WX("Auth: %s\n", sec.auth_mode == WLAN_AUTH_OPEN ?
 			   "OPEN" : "SHARED KEY");

 	/* For now we just support WEP, so only set that security level...
 	 * TODO: When WPA is added this is one place that needs to change */
 	sec.flags |= SEC_LEVEL;
 	sec.level = SEC_LEVEL_1;	/* 40 and 104 bit WEP */

 	if (ieee->set_security)
 		ieee->set_security(dev, &sec);

 	/* Do not reset port if card is in Managed mode since resetting will
 	 * generate new IEEE 802.11 authentication which may end up in looping
 	 * with IEEE 802.1X.  If your hardware requires a reset after WEP
 	 * configuration (for example... Prism2), implement the reset_port in
 	 * the callbacks structures used to initialize the 802.11 stack. */
 	if (ieee->reset_on_keychange &&
 	    ieee->iw_mode != IW_MODE_INFRA &&
 	    ieee->reset_port && ieee->reset_port(dev)) {
 		printk(KERN_DEBUG "%s: reset_port failed\n", dev->name);
 		return -EINVAL;
 	}
 	return 0;
 }

 int ieee80211_wx_get_encode(struct ieee80211_device *ieee,
 			    struct iw_request_info *info,
 			    union iwreq_data *wrqu, char *keybuf)
 {
 	struct iw_point *erq = &(wrqu->encoding);
 	int len, key;
 	struct ieee80211_crypt_data *crypt;
 	struct ieee80211_security *sec = &ieee->sec;

 	IEEE80211_DEBUG_WX("GET_ENCODE\n");

 	key = erq->flags & IW_ENCODE_INDEX;
 	if (key) {
 		if (key > WEP_KEYS)
 			return -EINVAL;
 		key--;
 	} else
 		key = ieee->tx_keyidx;

 	crypt = ieee->crypt[key];
 	erq->flags = key + 1;

 	if (!sec->enabled) {
 		erq->length = 0;
 		erq->flags |= IW_ENCODE_DISABLED;
 		return 0;
 	}

 	if (sec->level != SEC_LEVEL_1) {
 		/* only WEP is supported with wireless extensions, so just
 		 * report that encryption is used */
 		erq->length = 0;
 		erq->flags |= IW_ENCODE_ENABLED;
 		return 0;
 	}

 	len = sec->key_sizes[key];
 	memcpy(keybuf, sec->keys[key], len);

 	erq->length = (len >= 0 ? len : 0);
 	erq->flags |= IW_ENCODE_ENABLED;

 	if (ieee->open_wep)
 		erq->flags |= IW_ENCODE_OPEN;
 	else
 		erq->flags |= IW_ENCODE_RESTRICTED;

 	return 0;
 }

 EXPORT_SYMBOL(ieee80211_wx_get_scan);
 EXPORT_SYMBOL(ieee80211_wx_set_encode);
 EXPORT_SYMBOL(ieee80211_wx_get_encode);
	/******************************************************************************

	Copyright(c) 2004 Intel Corporation. All rights reserved.

	Portions of this file are based on the WEP enablement code provided by the
	Host AP project hostap-drivers v0.1.3
	Copyright (c) 2001-2002, SSH Communications Security Corp and Jouni Malinen
	<jkmaline@cc.hut.fi>
	Copyright (c) 2002-2003, Jouni Malinen <jkmaline@cc.hut.fi>

	This program is free software; you can redistribute it and/or modify it
	under the terms of version 2 of the GNU General Public License as
	published by the Free Software Foundation.

	This program is distributed in the hope that it will be useful, but WITHOUT
	ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
	FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
	more details.

	You should have received a copy of the GNU General Public License along with
	this program; if not, write to the Free Software Foundation, Inc., 59
	Temple Place - Suite 330, Boston, MA 02111-1307, USA.

	The full GNU General Public License is included in this distribution in the
	file called LICENSE.

	Contact Information:
	James P. Ketrenos <ipw2100-admin@linux.intel.com>
	Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497

	******************************************************************************/

	#include <linux/kmod.h>
	#include <linux/module.h>
	#include <linux/jiffies.h>

	#include <net/ieee80211.h>
	#include <linux/wireless.h>

	static const char *ieee80211_modes[] = {
	"?", "a", "b", "ab", "g", "ag", "bg", "abg"
	};

	#define MAX_CUSTOM_LEN 64
	static inline char ipw2100_translate_scan(struct ieee80211_device ieee,
	char start, char stop,
	struct ieee80211_network *network)
	{
	char custom[MAX_CUSTOM_LEN];
	char *p;
	struct iw_event iwe;
	int i, j;
	u8 max_rate, rate;

	/* First entry MUST be the AP MAC address */
	iwe.cmd = SIOCGIWAP;
	iwe.u.ap_addr.sa_family = ARPHRD_ETHER;
	memcpy(iwe.u.ap_addr.sa_data, network->bssid, ETH_ALEN);
	start = iwe_stream_add_event(start, stop, &iwe, IW_EV_ADDR_LEN);

	/* Remaining entries will be displayed in the order we provide them */

	/* Add the ESSID */
	iwe.cmd = SIOCGIWESSID;
	iwe.u.data.flags = 1;
	if (network->flags & NETWORK_EMPTY_ESSID) {
	iwe.u.data.length = sizeof("<hidden>");
	start = iwe_stream_add_point(start, stop, &iwe, "<hidden>");
	} else {
	iwe.u.data.length = min(network->ssid_len, (u8) 32);
	start = iwe_stream_add_point(start, stop, &iwe, network->ssid);
	}

	/* Add the protocol name */
	iwe.cmd = SIOCGIWNAME;
	snprintf(iwe.u.name, IFNAMSIZ, "IEEE 802.11%s",
	ieee80211_modes[network->mode]);
	start = iwe_stream_add_event(start, stop, &iwe, IW_EV_CHAR_LEN);

	/* Add mode */
	iwe.cmd = SIOCGIWMODE;
	if (network->capability & (WLAN_CAPABILITY_ESS \| WLAN_CAPABILITY_IBSS)) {
	if (network->capability & WLAN_CAPABILITY_ESS)
	iwe.u.mode = IW_MODE_MASTER;
	else
	iwe.u.mode = IW_MODE_ADHOC;

	start = iwe_stream_add_event(start, stop, &iwe, IW_EV_UINT_LEN);
	}

	/* Add frequency/channel */
	iwe.cmd = SIOCGIWFREQ;
	/* iwe.u.freq.m = ieee80211_frequency(network->channel, network->mode);
	iwe.u.freq.e = 3; */
	iwe.u.freq.m = network->channel;
	iwe.u.freq.e = 0;
	iwe.u.freq.i = 0;
	start = iwe_stream_add_event(start, stop, &iwe, IW_EV_FREQ_LEN);

	/* Add encryption capability */
	iwe.cmd = SIOCGIWENCODE;
	if (network->capability & WLAN_CAPABILITY_PRIVACY)
	iwe.u.data.flags = IW_ENCODE_ENABLED \| IW_ENCODE_NOKEY;
	else
	iwe.u.data.flags = IW_ENCODE_DISABLED;
	iwe.u.data.length = 0;
	start = iwe_stream_add_point(start, stop, &iwe, network->ssid);

	/* Add basic and extended rates */
	max_rate = 0;
	p = custom;
	p += snprintf(p, MAX_CUSTOM_LEN - (p - custom), " Rates (Mb/s): ");
	for (i = 0, j = 0; i < network->rates_len;) {
	if (j < network->rates_ex_len &&
	((network->rates_ex[j] & 0x7F) <
	(network->rates[i] & 0x7F)))
	rate = network->rates_ex[j++] & 0x7F;
	else
	rate = network->rates[i++] & 0x7F;
	if (rate > max_rate)
	max_rate = rate;
	p += snprintf(p, MAX_CUSTOM_LEN - (p - custom),
	"%d%s ", rate >> 1, (rate & 1) ? ".5" : "");
	}
	for (; j < network->rates_ex_len; j++) {
	rate = network->rates_ex[j] & 0x7F;
	p += snprintf(p, MAX_CUSTOM_LEN - (p - custom),
	"%d%s ", rate >> 1, (rate & 1) ? ".5" : "");
	if (rate > max_rate)
	max_rate = rate;
	}

	iwe.cmd = SIOCGIWRATE;
	iwe.u.bitrate.fixed = iwe.u.bitrate.disabled = 0;
	iwe.u.bitrate.value = max_rate * 500000;
	start = iwe_stream_add_event(start, stop, &iwe, IW_EV_PARAM_LEN);

	iwe.cmd = IWEVCUSTOM;
	iwe.u.data.length = p - custom;
	if (iwe.u.data.length)
	start = iwe_stream_add_point(start, stop, &iwe, custom);

	/* Add quality statistics */
	iwe.cmd = IWEVQUAL;
	iwe.u.qual.updated = IW_QUAL_QUAL_UPDATED \| IW_QUAL_LEVEL_UPDATED \|
	IW_QUAL_NOISE_UPDATED;

	if (!(network->stats.mask & IEEE80211_STATMASK_RSSI)) {
	iwe.u.qual.updated \|= IW_QUAL_QUAL_INVALID \|
	IW_QUAL_LEVEL_INVALID;
	iwe.u.qual.qual = 0;
	iwe.u.qual.level = 0;
	} else {
	iwe.u.qual.level = network->stats.rssi;
	iwe.u.qual.qual =
	(100 *
	(ieee->perfect_rssi - ieee->worst_rssi) *
	(ieee->perfect_rssi - ieee->worst_rssi) -
	(ieee->perfect_rssi - network->stats.rssi) *
	(15 * (ieee->perfect_rssi - ieee->worst_rssi) +
	62 * (ieee->perfect_rssi - network->stats.rssi))) /
	((ieee->perfect_rssi - ieee->worst_rssi) *
	(ieee->perfect_rssi - ieee->worst_rssi));
	if (iwe.u.qual.qual > 100)
	iwe.u.qual.qual = 100;
	else if (iwe.u.qual.qual < 1)
	iwe.u.qual.qual = 0;
	}

	if (!(network->stats.mask & IEEE80211_STATMASK_NOISE)) {
	iwe.u.qual.updated \|= IW_QUAL_NOISE_INVALID;
	iwe.u.qual.noise = 0;
	} else {
	iwe.u.qual.noise = network->stats.noise;
	}

	start = iwe_stream_add_event(start, stop, &iwe, IW_EV_QUAL_LEN);

	iwe.cmd = IWEVCUSTOM;
	p = custom;

	iwe.u.data.length = p - custom;
	if (iwe.u.data.length)
	start = iwe_stream_add_point(start, stop, &iwe, custom);

	if (network->wpa_ie_len) {
	char buf[MAX_WPA_IE_LEN * 2 + 30];

	u8 *p = buf;
	p += sprintf(p, "wpa_ie=");
	for (i = 0; i < network->wpa_ie_len; i++) {
	p += sprintf(p, "%02x", network->wpa_ie[i]);
	}

	memset(&iwe, 0, sizeof(iwe));
	iwe.cmd = IWEVCUSTOM;
	iwe.u.data.length = strlen(buf);
	start = iwe_stream_add_point(start, stop, &iwe, buf);
	}

	if (network->rsn_ie_len) {
	char buf[MAX_WPA_IE_LEN * 2 + 30];

	u8 *p = buf;
	p += sprintf(p, "rsn_ie=");
	for (i = 0; i < network->rsn_ie_len; i++) {
	p += sprintf(p, "%02x", network->rsn_ie[i]);
	}

	memset(&iwe, 0, sizeof(iwe));
	iwe.cmd = IWEVCUSTOM;
	iwe.u.data.length = strlen(buf);
	start = iwe_stream_add_point(start, stop, &iwe, buf);
	}

	/* Add EXTRA: Age to display seconds since last beacon/probe response
	* for given network. */
	iwe.cmd = IWEVCUSTOM;
	p = custom;
	p += snprintf(p, MAX_CUSTOM_LEN - (p - custom),
	" Last beacon: %dms ago",
	jiffies_to_msecs(jiffies - network->last_scanned));
	iwe.u.data.length = p - custom;
	if (iwe.u.data.length)
	start = iwe_stream_add_point(start, stop, &iwe, custom);

	return start;
	}

	int ieee80211_wx_get_scan(struct ieee80211_device *ieee,
	struct iw_request_info *info,
	union iwreq_data wrqu, char extra)
	{
	struct ieee80211_network *network;
	unsigned long flags;

	char *ev = extra;
	char *stop = ev + IW_SCAN_MAX_DATA;
	int i = 0;

	IEEE80211_DEBUG_WX("Getting scan\n");

	spin_lock_irqsave(&ieee->lock, flags);

	list_for_each_entry(network, &ieee->network_list, list) {
	i++;
	if (ieee->scan_age == 0 \|\|
	time_after(network->last_scanned + ieee->scan_age, jiffies))
	ev = ipw2100_translate_scan(ieee, ev, stop, network);
	else
	IEEE80211_DEBUG_SCAN("Not showing network '%s ("
	MAC_FMT ")' due to age (%dms).\n",
	escape_essid(network->ssid,
	network->ssid_len),
	MAC_ARG(network->bssid),
	jiffies_to_msecs(jiffies -
	network->
	last_scanned));
	}

	spin_unlock_irqrestore(&ieee->lock, flags);

	wrqu->data.length = ev - extra;
	wrqu->data.flags = 0;

	IEEE80211_DEBUG_WX("exit: %d networks returned.\n", i);

	return 0;
	}

	int ieee80211_wx_set_encode(struct ieee80211_device *ieee,
	struct iw_request_info *info,
	union iwreq_data wrqu, char keybuf)
	{
	struct iw_point *erq = &(wrqu->encoding);
	struct net_device *dev = ieee->dev;
	struct ieee80211_security sec = {
	.flags = 0
	};
	int i, key, key_provided, len;
	struct ieee80211_crypt_data **crypt;
	int host_crypto = ieee->host_encrypt \|\| ieee->host_decrypt;

	IEEE80211_DEBUG_WX("SET_ENCODE\n");

	key = erq->flags & IW_ENCODE_INDEX;
	if (key) {
	if (key > WEP_KEYS)
	return -EINVAL;
	key--;
	key_provided = 1;
	} else {
	key_provided = 0;
	key = ieee->tx_keyidx;
	}

	IEEE80211_DEBUG_WX("Key: %d [%s]\n", key, key_provided ?
	"provided" : "default");

	crypt = &ieee->crypt[key];

	if (erq->flags & IW_ENCODE_DISABLED) {
	if (key_provided && *crypt) {
	IEEE80211_DEBUG_WX("Disabling encryption on key %d.\n",
	key);
	ieee80211_crypt_delayed_deinit(ieee, crypt);
	} else
	IEEE80211_DEBUG_WX("Disabling encryption.\n");

	/* Check all the keys to see if any are still configured,
	* and if no key index was provided, de-init them all */
	for (i = 0; i < WEP_KEYS; i++) {
	if (ieee->crypt[i] != NULL) {
	if (key_provided)
	break;
	ieee80211_crypt_delayed_deinit(ieee,
	&ieee->crypt[i]);
	}
	}

	if (i == WEP_KEYS) {
	sec.enabled = 0;
	sec.encrypt = 0;
	sec.level = SEC_LEVEL_0;
	sec.flags \|= SEC_ENABLED \| SEC_LEVEL;
	}

	goto done;
	}

	sec.enabled = 1;
	sec.encrypt = 1;
	sec.flags \|= SEC_ENABLED;

	if (crypt != NULL && (crypt)->ops != NULL &&
	strcmp((*crypt)->ops->name, "WEP") != 0) {
	/* changing to use WEP; deinit previously used algorithm
	* on this key */
	ieee80211_crypt_delayed_deinit(ieee, crypt);
	}

	if (*crypt == NULL && host_crypto) {
	struct ieee80211_crypt_data *new_crypt;

	/* take WEP into use */
	new_crypt = kmalloc(sizeof(struct ieee80211_crypt_data),
	GFP_KERNEL);
	if (new_crypt == NULL)
	return -ENOMEM;
	memset(new_crypt, 0, sizeof(struct ieee80211_crypt_data));
	new_crypt->ops = ieee80211_get_crypto_ops("WEP");
	if (!new_crypt->ops) {
	request_module("ieee80211_crypt_wep");
	new_crypt->ops = ieee80211_get_crypto_ops("WEP");
	}

	if (new_crypt->ops && try_module_get(new_crypt->ops->owner))
	new_crypt->priv = new_crypt->ops->init(ieee, key);

	if (!new_crypt->ops \|\| !new_crypt->priv) {
	kfree(new_crypt);
	new_crypt = NULL;

	printk(KERN_WARNING "%s: could not initialize WEP: "
	"load module ieee80211_crypt_wep\n", dev->name);
	return -EOPNOTSUPP;
	}
	*crypt = new_crypt;
	}

	/* If a new key was provided, set it up */
	if (erq->length > 0) {
	len = erq->length <= 5 ? 5 : 13;
	memcpy(sec.keys[key], keybuf, erq->length);
	if (len > erq->length)
	memset(sec.keys[key] + erq->length, 0,
	len - erq->length);
	IEEE80211_DEBUG_WX("Setting key %d to '%s' (%d:%d bytes)\n",
	key, escape_essid(sec.keys[key], len),
	erq->length, len);
	sec.key_sizes[key] = len;
	if (*crypt)
	(*crypt)->ops->set_key(sec.keys[key], len, NULL,
	(*crypt)->priv);
	sec.flags \|= (1 << key);
	/* This ensures a key will be activated if no key is
	* explicitely set */
	if (key == sec.active_key)
	sec.flags \|= SEC_ACTIVE_KEY;

	} else {
	if (host_crypto) {
	len = (*crypt)->ops->get_key(sec.keys[key], WEP_KEY_LEN,
	NULL, (*crypt)->priv);
	if (len == 0) {
	/* Set a default key of all 0 */
	IEEE80211_DEBUG_WX("Setting key %d to all "
	"zero.\n", key);
	memset(sec.keys[key], 0, 13);
	(*crypt)->ops->set_key(sec.keys[key], 13, NULL,
	(*crypt)->priv);
	sec.key_sizes[key] = 13;
	sec.flags \|= (1 << key);
	}
	}
	/* No key data - just set the default TX key index */
	if (key_provided) {
	IEEE80211_DEBUG_WX("Setting key %d to default Tx "
	"key.\n", key);
	ieee->tx_keyidx = key;
	sec.active_key = key;
	sec.flags \|= SEC_ACTIVE_KEY;
	}
	}

	done:
	ieee->open_wep = !(erq->flags & IW_ENCODE_RESTRICTED);
	sec.auth_mode = ieee->open_wep ? WLAN_AUTH_OPEN : WLAN_AUTH_SHARED_KEY;
	sec.flags \|= SEC_AUTH_MODE;
	IEEE80211_DEBUG_WX("Auth: %s\n", sec.auth_mode == WLAN_AUTH_OPEN ?
	"OPEN" : "SHARED KEY");

	/* For now we just support WEP, so only set that security level...
	* TODO: When WPA is added this is one place that needs to change */
	sec.flags \|= SEC_LEVEL;
	sec.level = SEC_LEVEL_1; /* 40 and 104 bit WEP */

	if (ieee->set_security)
	ieee->set_security(dev, &sec);

	/* Do not reset port if card is in Managed mode since resetting will
	* generate new IEEE 802.11 authentication which may end up in looping
	* with IEEE 802.1X. If your hardware requires a reset after WEP
	* configuration (for example... Prism2), implement the reset_port in
	* the callbacks structures used to initialize the 802.11 stack. */
	if (ieee->reset_on_keychange &&
	ieee->iw_mode != IW_MODE_INFRA &&
	ieee->reset_port && ieee->reset_port(dev)) {
	printk(KERN_DEBUG "%s: reset_port failed\n", dev->name);
	return -EINVAL;
	}
	return 0;
	}

	int ieee80211_wx_get_encode(struct ieee80211_device *ieee,
	struct iw_request_info *info,
	union iwreq_data wrqu, char keybuf)
	{
	struct iw_point *erq = &(wrqu->encoding);
	int len, key;
	struct ieee80211_crypt_data *crypt;
	struct ieee80211_security *sec = &ieee->sec;

	IEEE80211_DEBUG_WX("GET_ENCODE\n");

	key = erq->flags & IW_ENCODE_INDEX;
	if (key) {
	if (key > WEP_KEYS)
	return -EINVAL;
	key--;
	} else
	key = ieee->tx_keyidx;

	crypt = ieee->crypt[key];
	erq->flags = key + 1;

	if (!sec->enabled) {
	erq->length = 0;
	erq->flags \|= IW_ENCODE_DISABLED;
	return 0;
	}

	if (sec->level != SEC_LEVEL_1) {
	/* only WEP is supported with wireless extensions, so just
	* report that encryption is used */
	erq->length = 0;
	erq->flags \|= IW_ENCODE_ENABLED;
	return 0;
	}

	len = sec->key_sizes[key];
	memcpy(keybuf, sec->keys[key], len);

	erq->length = (len >= 0 ? len : 0);
	erq->flags \|= IW_ENCODE_ENABLED;

	if (ieee->open_wep)
	erq->flags \|= IW_ENCODE_OPEN;
	else
	erq->flags \|= IW_ENCODE_RESTRICTED;

	return 0;
	}

	EXPORT_SYMBOL(ieee80211_wx_get_scan);
	EXPORT_SYMBOL(ieee80211_wx_set_encode);
	EXPORT_SYMBOL(ieee80211_wx_get_encode);