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kernel-fxtec-pro1x/net/mac80211/wext.c
Johannes Berg 7738231f98 mac80211: report operating frequency rather than current 
It's not very helpful to see, in iwconfig, the current frequency
the card is tuned to if that frequency is currently somewhere
across the board because we're scanning. Since we keep track of
the frequency the user wants, display that instead.

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-05-06 15:15:02 -04:00

955 lines
25 KiB
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/*
* Copyright 2002-2005, Instant802 Networks, Inc.
* Copyright 2005-2006, Devicescape Software, Inc.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#include <linux/module.h>
#include <linux/init.h>
#include <linux/netdevice.h>
#include <linux/types.h>
#include <linux/slab.h>
#include <linux/skbuff.h>
#include <linux/etherdevice.h>
#include <linux/if_arp.h>
#include <linux/wireless.h>
#include <net/iw_handler.h>
#include <asm/uaccess.h>
#include <net/mac80211.h>
#include "ieee80211_i.h"
#include "led.h"
#include "rate.h"
#include "wpa.h"
#include "aes_ccm.h"
static int ieee80211_set_encryption(struct ieee80211_sub_if_data *sdata, u8 *sta_addr,
int idx, int alg, int remove,
int set_tx_key, const u8 *_key,
size_t key_len)
{
struct ieee80211_local *local = sdata->local;
struct sta_info *sta;
struct ieee80211_key *key;
int err;
if (alg == ALG_AES_CMAC) {
if (idx < NUM_DEFAULT_KEYS ||
idx >= NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS) {
printk(KERN_DEBUG "%s: set_encrypt - invalid idx=%d "
"(BIP)\n", sdata->dev->name, idx);
return -EINVAL;
}
} else if (idx < 0 || idx >= NUM_DEFAULT_KEYS) {
printk(KERN_DEBUG "%s: set_encrypt - invalid idx=%d\n",
sdata->dev->name, idx);
return -EINVAL;
}
if (remove) {
rcu_read_lock();
err = 0;
if (is_broadcast_ether_addr(sta_addr)) {
key = sdata->keys[idx];
} else {
sta = sta_info_get(local, sta_addr);
if (!sta) {
err = -ENOENT;
goto out_unlock;
}
key = sta->key;
}
ieee80211_key_free(key);
} else {
key = ieee80211_key_alloc(alg, idx, key_len, _key);
if (!key)
return -ENOMEM;
sta = NULL;
err = 0;
rcu_read_lock();
if (!is_broadcast_ether_addr(sta_addr)) {
set_tx_key = 0;
/*
* According to the standard, the key index of a
* pairwise key must be zero. However, some AP are
* broken when it comes to WEP key indices, so we
* work around this.
*/
if (idx != 0 && alg != ALG_WEP) {
ieee80211_key_free(key);
err = -EINVAL;
goto out_unlock;
}
sta = sta_info_get(local, sta_addr);
if (!sta) {
ieee80211_key_free(key);
err = -ENOENT;
goto out_unlock;
}
}
if (alg == ALG_WEP &&
key_len != LEN_WEP40 && key_len != LEN_WEP104) {
ieee80211_key_free(key);
err = -EINVAL;
goto out_unlock;
}
ieee80211_key_link(key, sdata, sta);
if (set_tx_key || (!sta && !sdata->default_key && key))
ieee80211_set_default_key(sdata, idx);
if (alg == ALG_AES_CMAC &&
(set_tx_key || (!sta && !sdata->default_mgmt_key && key)))
ieee80211_set_default_mgmt_key(sdata, idx);
}
out_unlock:
rcu_read_unlock();
return err;
}
static int ieee80211_ioctl_siwgenie(struct net_device *dev,
struct iw_request_info *info,
struct iw_point *data, char *extra)
{
struct ieee80211_sub_if_data *sdata;
sdata = IEEE80211_DEV_TO_SUB_IF(dev);
if (sdata->vif.type == NL80211_IFTYPE_STATION) {
int ret = ieee80211_sta_set_extra_ie(sdata, extra, data->length);
if (ret)
return ret;
sdata->u.mgd.flags &= ~IEEE80211_STA_AUTO_BSSID_SEL;
sdata->u.mgd.flags &= ~IEEE80211_STA_EXT_SME;
ieee80211_sta_req_auth(sdata);
return 0;
}
return -EOPNOTSUPP;
}
static int ieee80211_ioctl_siwfreq(struct net_device *dev,
struct iw_request_info *info,
struct iw_freq *freq, char *extra)
{
struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
if (sdata->vif.type == NL80211_IFTYPE_ADHOC)
return cfg80211_ibss_wext_siwfreq(dev, info, freq, extra);
else if (sdata->vif.type == NL80211_IFTYPE_STATION)
sdata->u.mgd.flags &= ~IEEE80211_STA_AUTO_CHANNEL_SEL;
/* freq->e == 0: freq->m = channel; otherwise freq = m * 10^e */
if (freq->e == 0) {
if (freq->m < 0) {
if (sdata->vif.type == NL80211_IFTYPE_STATION)
sdata->u.mgd.flags |=
IEEE80211_STA_AUTO_CHANNEL_SEL;
return 0;
} else
return ieee80211_set_freq(sdata,
ieee80211_channel_to_frequency(freq->m));
} else {
int i, div = 1000000;
for (i = 0; i < freq->e; i++)
div /= 10;
if (div > 0)
return ieee80211_set_freq(sdata, freq->m / div);
else
return -EINVAL;
}
}
static int ieee80211_ioctl_giwfreq(struct net_device *dev,
struct iw_request_info *info,
struct iw_freq *freq, char *extra)
{
struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
if (sdata->vif.type == NL80211_IFTYPE_ADHOC)
return cfg80211_ibss_wext_giwfreq(dev, info, freq, extra);
freq->m = local->oper_channel->center_freq;
freq->e = 6;
return 0;
}
static int ieee80211_ioctl_siwessid(struct net_device *dev,
struct iw_request_info *info,
struct iw_point *data, char *ssid)
{
struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
size_t len = data->length;
int ret;
if (sdata->vif.type == NL80211_IFTYPE_ADHOC)
return cfg80211_ibss_wext_siwessid(dev, info, data, ssid);
/* iwconfig uses nul termination in SSID.. */
if (len > 0 && ssid[len - 1] == '\0')
len--;
if (sdata->vif.type == NL80211_IFTYPE_STATION) {
if (data->flags)
sdata->u.mgd.flags &= ~IEEE80211_STA_AUTO_SSID_SEL;
else
sdata->u.mgd.flags |= IEEE80211_STA_AUTO_SSID_SEL;
ret = ieee80211_sta_set_ssid(sdata, ssid, len);
if (ret)
return ret;
sdata->u.mgd.flags &= ~IEEE80211_STA_EXT_SME;
ieee80211_sta_req_auth(sdata);
return 0;
}
return -EOPNOTSUPP;
}
static int ieee80211_ioctl_giwessid(struct net_device *dev,
struct iw_request_info *info,
struct iw_point *data, char *ssid)
{
size_t len;
struct ieee80211_sub_if_data *sdata;
sdata = IEEE80211_DEV_TO_SUB_IF(dev);
if (sdata->vif.type == NL80211_IFTYPE_ADHOC)
return cfg80211_ibss_wext_giwessid(dev, info, data, ssid);
if (sdata->vif.type == NL80211_IFTYPE_STATION) {
int res = ieee80211_sta_get_ssid(sdata, ssid, &len);
if (res == 0) {
data->length = len;
data->flags = 1;
} else
data->flags = 0;
return res;
}
return -EOPNOTSUPP;
}
static int ieee80211_ioctl_siwap(struct net_device *dev,
struct iw_request_info *info,
struct sockaddr *ap_addr, char *extra)
{
struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
if (sdata->vif.type == NL80211_IFTYPE_ADHOC)
return cfg80211_ibss_wext_siwap(dev, info, ap_addr, extra);
if (sdata->vif.type == NL80211_IFTYPE_STATION) {
int ret;
if (is_zero_ether_addr((u8 *) &ap_addr->sa_data))
sdata->u.mgd.flags |= IEEE80211_STA_AUTO_BSSID_SEL |
IEEE80211_STA_AUTO_CHANNEL_SEL;
else if (is_broadcast_ether_addr((u8 *) &ap_addr->sa_data))
sdata->u.mgd.flags |= IEEE80211_STA_AUTO_BSSID_SEL;
else
sdata->u.mgd.flags &= ~IEEE80211_STA_AUTO_BSSID_SEL;
ret = ieee80211_sta_set_bssid(sdata, (u8 *) &ap_addr->sa_data);
if (ret)
return ret;
sdata->u.mgd.flags &= ~IEEE80211_STA_EXT_SME;
ieee80211_sta_req_auth(sdata);
return 0;
} else if (sdata->vif.type == NL80211_IFTYPE_WDS) {
/*
* If it is necessary to update the WDS peer address
* while the interface is running, then we need to do
* more work here, namely if it is running we need to
* add a new and remove the old STA entry, this is
* normally handled by _open() and _stop().
*/
if (netif_running(dev))
return -EBUSY;
memcpy(&sdata->u.wds.remote_addr, (u8 *) &ap_addr->sa_data,
ETH_ALEN);
return 0;
}
return -EOPNOTSUPP;
}
static int ieee80211_ioctl_giwap(struct net_device *dev,
struct iw_request_info *info,
struct sockaddr *ap_addr, char *extra)
{
struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
if (sdata->vif.type == NL80211_IFTYPE_ADHOC)
return cfg80211_ibss_wext_giwap(dev, info, ap_addr, extra);
if (sdata->vif.type == NL80211_IFTYPE_STATION) {
if (sdata->u.mgd.state == IEEE80211_STA_MLME_ASSOCIATED) {
ap_addr->sa_family = ARPHRD_ETHER;
memcpy(&ap_addr->sa_data, sdata->u.mgd.bssid, ETH_ALEN);
} else
memset(&ap_addr->sa_data, 0, ETH_ALEN);
return 0;
} else if (sdata->vif.type == NL80211_IFTYPE_WDS) {
ap_addr->sa_family = ARPHRD_ETHER;
memcpy(&ap_addr->sa_data, sdata->u.wds.remote_addr, ETH_ALEN);
return 0;
}
return -EOPNOTSUPP;
}
static int ieee80211_ioctl_siwrate(struct net_device *dev,
struct iw_request_info *info,
struct iw_param *rate, char *extra)
{
struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
int i, err = -EINVAL;
u32 target_rate = rate->value / 100000;
struct ieee80211_sub_if_data *sdata;
struct ieee80211_supported_band *sband;
sdata = IEEE80211_DEV_TO_SUB_IF(dev);
sband = local->hw.wiphy->bands[local->hw.conf.channel->band];
/* target_rate = -1, rate->fixed = 0 means auto only, so use all rates
* target_rate = X, rate->fixed = 1 means only rate X
* target_rate = X, rate->fixed = 0 means all rates <= X */
sdata->max_ratectrl_rateidx = -1;
sdata->force_unicast_rateidx = -1;
if (rate->value < 0)
return 0;
for (i=0; i< sband->n_bitrates; i++) {
struct ieee80211_rate *brate = &sband->bitrates[i];
int this_rate = brate->bitrate;
if (target_rate == this_rate) {
sdata->max_ratectrl_rateidx = i;
if (rate->fixed)
sdata->force_unicast_rateidx = i;
err = 0;
break;
}
}
return err;
}
static int ieee80211_ioctl_giwrate(struct net_device *dev,
struct iw_request_info *info,
struct iw_param *rate, char *extra)
{
struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
struct sta_info *sta;
struct ieee80211_sub_if_data *sdata;
struct ieee80211_supported_band *sband;
sdata = IEEE80211_DEV_TO_SUB_IF(dev);
if (sdata->vif.type != NL80211_IFTYPE_STATION)
return -EOPNOTSUPP;
sband = local->hw.wiphy->bands[local->hw.conf.channel->band];
rcu_read_lock();
sta = sta_info_get(local, sdata->u.mgd.bssid);
if (sta && !(sta->last_tx_rate.flags & IEEE80211_TX_RC_MCS))
rate->value = sband->bitrates[sta->last_tx_rate.idx].bitrate;
else
rate->value = 0;
rcu_read_unlock();
if (!sta)
return -ENODEV;
rate->value *= 100000;
return 0;
}
static int ieee80211_ioctl_siwtxpower(struct net_device *dev,
struct iw_request_info *info,
union iwreq_data *data, char *extra)
{
struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
struct ieee80211_channel* chan = local->hw.conf.channel;
bool reconf = false;
u32 reconf_flags = 0;
int new_power_level;
if ((data->txpower.flags & IW_TXPOW_TYPE) != IW_TXPOW_DBM)
return -EINVAL;
if (data->txpower.flags & IW_TXPOW_RANGE)
return -EINVAL;
if (!chan)
return -EINVAL;
/* only change when not disabling */
if (!data->txpower.disabled) {
if (data->txpower.fixed) {
if (data->txpower.value < 0)
return -EINVAL;
new_power_level = data->txpower.value;
/*
* Debatable, but we cannot do a fixed power
* level above the regulatory constraint.
* Use "iwconfig wlan0 txpower 15dBm" instead.
*/
if (new_power_level > chan->max_power)
return -EINVAL;
} else {
/*
* Automatic power level setting, max being the value
* passed in from userland.
*/
if (data->txpower.value < 0)
new_power_level = -1;
else
new_power_level = data->txpower.value;
}
reconf = true;
/*
* ieee80211_hw_config() will limit to the channel's
* max power and possibly power constraint from AP.
*/
local->user_power_level = new_power_level;
}
if (local->hw.conf.radio_enabled != !(data->txpower.disabled)) {
local->hw.conf.radio_enabled = !(data->txpower.disabled);
reconf_flags |= IEEE80211_CONF_CHANGE_RADIO_ENABLED;
ieee80211_led_radio(local, local->hw.conf.radio_enabled);
}
if (reconf || reconf_flags)
ieee80211_hw_config(local, reconf_flags);
return 0;
}
static int ieee80211_ioctl_giwtxpower(struct net_device *dev,
struct iw_request_info *info,
union iwreq_data *data, char *extra)
{
struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
data->txpower.fixed = 1;
data->txpower.disabled = !(local->hw.conf.radio_enabled);
data->txpower.value = local->hw.conf.power_level;
data->txpower.flags = IW_TXPOW_DBM;
return 0;
}
static int ieee80211_ioctl_siwencode(struct net_device *dev,
struct iw_request_info *info,
struct iw_point *erq, char *keybuf)
{
struct ieee80211_sub_if_data *sdata;
int idx, i, alg = ALG_WEP;
u8 bcaddr[ETH_ALEN] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
int remove = 0, ret;
sdata = IEEE80211_DEV_TO_SUB_IF(dev);
idx = erq->flags & IW_ENCODE_INDEX;
if (idx == 0) {
if (sdata->default_key)
for (i = 0; i < NUM_DEFAULT_KEYS; i++) {
if (sdata->default_key == sdata->keys[i]) {
idx = i;
break;
}
}
} else if (idx < 1 || idx > 4)
return -EINVAL;
else
idx--;
if (erq->flags & IW_ENCODE_DISABLED)
remove = 1;
else if (erq->length == 0) {
/* No key data - just set the default TX key index */
ieee80211_set_default_key(sdata, idx);
return 0;
}
ret = ieee80211_set_encryption(
sdata, bcaddr,
idx, alg, remove,
!sdata->default_key,
keybuf, erq->length);
if (!ret && sdata->vif.type == NL80211_IFTYPE_STATION) {
if (remove)
sdata->u.mgd.flags &= ~IEEE80211_STA_TKIP_WEP_USED;
else
sdata->u.mgd.flags |= IEEE80211_STA_TKIP_WEP_USED;
}
return ret;
}
static int ieee80211_ioctl_giwencode(struct net_device *dev,
struct iw_request_info *info,
struct iw_point *erq, char *key)
{
struct ieee80211_sub_if_data *sdata;
int idx, i;
sdata = IEEE80211_DEV_TO_SUB_IF(dev);
idx = erq->flags & IW_ENCODE_INDEX;
if (idx < 1 || idx > 4) {
idx = -1;
if (!sdata->default_key)
idx = 0;
else for (i = 0; i < NUM_DEFAULT_KEYS; i++) {
if (sdata->default_key == sdata->keys[i]) {
idx = i;
break;
}
}
if (idx < 0)
return -EINVAL;
} else
idx--;
erq->flags = idx + 1;
if (!sdata->keys[idx]) {
erq->length = 0;
erq->flags |= IW_ENCODE_DISABLED;
return 0;
}
memcpy(key, sdata->keys[idx]->conf.key,
min_t(int, erq->length, sdata->keys[idx]->conf.keylen));
erq->length = sdata->keys[idx]->conf.keylen;
erq->flags |= IW_ENCODE_ENABLED;
if (sdata->vif.type == NL80211_IFTYPE_STATION) {
switch (sdata->u.mgd.auth_alg) {
case WLAN_AUTH_OPEN:
case WLAN_AUTH_LEAP:
erq->flags |= IW_ENCODE_OPEN;
break;
case WLAN_AUTH_SHARED_KEY:
erq->flags |= IW_ENCODE_RESTRICTED;
break;
}
}
return 0;
}
static int ieee80211_ioctl_siwpower(struct net_device *dev,
struct iw_request_info *info,
struct iw_param *wrq,
char *extra)
{
struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
struct ieee80211_conf *conf = &local->hw.conf;
int timeout = 0;
bool ps;
if (!(local->hw.flags & IEEE80211_HW_SUPPORTS_PS))
return -EOPNOTSUPP;
if (sdata->vif.type != NL80211_IFTYPE_STATION)
return -EINVAL;
if (wrq->disabled) {
ps = false;
timeout = 0;
goto set;
}
switch (wrq->flags & IW_POWER_MODE) {
case IW_POWER_ON: /* If not specified */
case IW_POWER_MODE: /* If set all mask */
case IW_POWER_ALL_R: /* If explicitely state all */
ps = true;
break;
default: /* Otherwise we ignore */
return -EINVAL;
}
if (wrq->flags & ~(IW_POWER_MODE | IW_POWER_TIMEOUT))
return -EINVAL;
if (wrq->flags & IW_POWER_TIMEOUT)
timeout = wrq->value / 1000;
set:
if (ps == sdata->u.mgd.powersave && timeout == conf->dynamic_ps_timeout)
return 0;
sdata->u.mgd.powersave = ps;
conf->dynamic_ps_timeout = timeout;
if (local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_PS)
ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
ieee80211_recalc_ps(local, -1);
return 0;
}
static int ieee80211_ioctl_giwpower(struct net_device *dev,
struct iw_request_info *info,
union iwreq_data *wrqu,
char *extra)
{
struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
wrqu->power.disabled = !sdata->u.mgd.powersave;
return 0;
}
static int ieee80211_ioctl_siwauth(struct net_device *dev,
struct iw_request_info *info,
struct iw_param *data, char *extra)
{
struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
int ret = 0;
switch (data->flags & IW_AUTH_INDEX) {
case IW_AUTH_WPA_VERSION:
case IW_AUTH_CIPHER_GROUP:
case IW_AUTH_WPA_ENABLED:
case IW_AUTH_RX_UNENCRYPTED_EAPOL:
case IW_AUTH_KEY_MGMT:
case IW_AUTH_CIPHER_GROUP_MGMT:
break;
case IW_AUTH_CIPHER_PAIRWISE:
if (sdata->vif.type == NL80211_IFTYPE_STATION) {
if (data->value & (IW_AUTH_CIPHER_WEP40 |
IW_AUTH_CIPHER_WEP104 | IW_AUTH_CIPHER_TKIP))
sdata->u.mgd.flags |=
IEEE80211_STA_TKIP_WEP_USED;
else
sdata->u.mgd.flags &=
~IEEE80211_STA_TKIP_WEP_USED;
}
break;
case IW_AUTH_DROP_UNENCRYPTED:
sdata->drop_unencrypted = !!data->value;
break;
case IW_AUTH_PRIVACY_INVOKED:
if (sdata->vif.type != NL80211_IFTYPE_STATION)
ret = -EINVAL;
else {
sdata->u.mgd.flags &= ~IEEE80211_STA_PRIVACY_INVOKED;
/*
* Privacy invoked by wpa_supplicant, store the
* value and allow associating to a protected
* network without having a key up front.
*/
if (data->value)
sdata->u.mgd.flags |=
IEEE80211_STA_PRIVACY_INVOKED;
}
break;
case IW_AUTH_80211_AUTH_ALG:
if (sdata->vif.type == NL80211_IFTYPE_STATION)
sdata->u.mgd.auth_algs = data->value;
else
ret = -EOPNOTSUPP;
break;
case IW_AUTH_MFP:
if (!(sdata->local->hw.flags & IEEE80211_HW_MFP_CAPABLE)) {
ret = -EOPNOTSUPP;
break;
}
if (sdata->vif.type == NL80211_IFTYPE_STATION) {
switch (data->value) {
case IW_AUTH_MFP_DISABLED:
sdata->u.mgd.mfp = IEEE80211_MFP_DISABLED;
break;
case IW_AUTH_MFP_OPTIONAL:
sdata->u.mgd.mfp = IEEE80211_MFP_OPTIONAL;
break;
case IW_AUTH_MFP_REQUIRED:
sdata->u.mgd.mfp = IEEE80211_MFP_REQUIRED;
break;
default:
ret = -EINVAL;
}
} else
ret = -EOPNOTSUPP;
break;
default:
ret = -EOPNOTSUPP;
break;
}
return ret;
}
/* Get wireless statistics. Called by /proc/net/wireless and by SIOCGIWSTATS */
static struct iw_statistics *ieee80211_get_wireless_stats(struct net_device *dev)
{
struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
struct iw_statistics *wstats = &local->wstats;
struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
struct sta_info *sta = NULL;
rcu_read_lock();
if (sdata->vif.type == NL80211_IFTYPE_STATION)
sta = sta_info_get(local, sdata->u.mgd.bssid);
if (!sta) {
wstats->discard.fragment = 0;
wstats->discard.misc = 0;
wstats->qual.qual = 0;
wstats->qual.level = 0;
wstats->qual.noise = 0;
wstats->qual.updated = IW_QUAL_ALL_INVALID;
} else {
wstats->qual.updated = 0;
/*
* mirror what cfg80211 does for iwrange/scan results,
* otherwise userspace gets confused.
*/
if (local->hw.flags & (IEEE80211_HW_SIGNAL_UNSPEC |
IEEE80211_HW_SIGNAL_DBM)) {
wstats->qual.updated |= IW_QUAL_LEVEL_UPDATED;
wstats->qual.updated |= IW_QUAL_QUAL_UPDATED;
} else {
wstats->qual.updated |= IW_QUAL_LEVEL_INVALID;
wstats->qual.updated |= IW_QUAL_QUAL_INVALID;
}
if (local->hw.flags & IEEE80211_HW_SIGNAL_UNSPEC) {
wstats->qual.level = sta->last_signal;
wstats->qual.qual = sta->last_signal;
} else if (local->hw.flags & IEEE80211_HW_SIGNAL_DBM) {
int sig = sta->last_signal;
wstats->qual.updated |= IW_QUAL_DBM;
wstats->qual.level = sig;
if (sig < -110)
sig = -110;
else if (sig > -40)
sig = -40;
wstats->qual.qual = sig + 110;
}
if (local->hw.flags & IEEE80211_HW_NOISE_DBM) {
/*
* This assumes that if driver reports noise, it also
* reports signal in dBm.
*/
wstats->qual.noise = sta->last_noise;
wstats->qual.updated |= IW_QUAL_NOISE_UPDATED;
} else {
wstats->qual.updated |= IW_QUAL_NOISE_INVALID;
}
}
rcu_read_unlock();
return wstats;
}
static int ieee80211_ioctl_giwauth(struct net_device *dev,
struct iw_request_info *info,
struct iw_param *data, char *extra)
{
struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
int ret = 0;
switch (data->flags & IW_AUTH_INDEX) {
case IW_AUTH_80211_AUTH_ALG:
if (sdata->vif.type == NL80211_IFTYPE_STATION)
data->value = sdata->u.mgd.auth_algs;
else
ret = -EOPNOTSUPP;
break;
default:
ret = -EOPNOTSUPP;
break;
}
return ret;
}
static int ieee80211_ioctl_siwencodeext(struct net_device *dev,
struct iw_request_info *info,
struct iw_point *erq, char *extra)
{
struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
struct iw_encode_ext *ext = (struct iw_encode_ext *) extra;
int uninitialized_var(alg), idx, i, remove = 0;
switch (ext->alg) {
case IW_ENCODE_ALG_NONE:
remove = 1;
break;
case IW_ENCODE_ALG_WEP:
alg = ALG_WEP;
break;
case IW_ENCODE_ALG_TKIP:
alg = ALG_TKIP;
break;
case IW_ENCODE_ALG_CCMP:
alg = ALG_CCMP;
break;
case IW_ENCODE_ALG_AES_CMAC:
alg = ALG_AES_CMAC;
break;
default:
return -EOPNOTSUPP;
}
if (erq->flags & IW_ENCODE_DISABLED)
remove = 1;
idx = erq->flags & IW_ENCODE_INDEX;
if (alg == ALG_AES_CMAC) {
if (idx < NUM_DEFAULT_KEYS + 1 ||
idx > NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS) {
idx = -1;
if (!sdata->default_mgmt_key)
idx = 0;
else for (i = NUM_DEFAULT_KEYS;
i < NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS;
i++) {
if (sdata->default_mgmt_key == sdata->keys[i])
{
idx = i;
break;
}
}
if (idx < 0)
return -EINVAL;
} else
idx--;
} else {
if (idx < 1 || idx > 4) {
idx = -1;
if (!sdata->default_key)
idx = 0;
else for (i = 0; i < NUM_DEFAULT_KEYS; i++) {
if (sdata->default_key == sdata->keys[i]) {
idx = i;
break;
}
}
if (idx < 0)
return -EINVAL;
} else
idx--;
}
return ieee80211_set_encryption(sdata, ext->addr.sa_data, idx, alg,
remove,
ext->ext_flags &
IW_ENCODE_EXT_SET_TX_KEY,
ext->key, ext->key_len);
}
/* Structures to export the Wireless Handlers */
static const iw_handler ieee80211_handler[] =
{
(iw_handler) NULL, /* SIOCSIWCOMMIT */
(iw_handler) cfg80211_wext_giwname, /* SIOCGIWNAME */
(iw_handler) NULL, /* SIOCSIWNWID */
(iw_handler) NULL, /* SIOCGIWNWID */
(iw_handler) ieee80211_ioctl_siwfreq, /* SIOCSIWFREQ */
(iw_handler) ieee80211_ioctl_giwfreq, /* SIOCGIWFREQ */
(iw_handler) cfg80211_wext_siwmode, /* SIOCSIWMODE */
(iw_handler) cfg80211_wext_giwmode, /* SIOCGIWMODE */
(iw_handler) NULL, /* SIOCSIWSENS */
(iw_handler) NULL, /* SIOCGIWSENS */
(iw_handler) NULL /* not used */, /* SIOCSIWRANGE */
(iw_handler) cfg80211_wext_giwrange, /* SIOCGIWRANGE */
(iw_handler) NULL /* not used */, /* SIOCSIWPRIV */
(iw_handler) NULL /* kernel code */, /* SIOCGIWPRIV */
(iw_handler) NULL /* not used */, /* SIOCSIWSTATS */
(iw_handler) NULL /* kernel code */, /* SIOCGIWSTATS */
(iw_handler) NULL, /* SIOCSIWSPY */
(iw_handler) NULL, /* SIOCGIWSPY */
(iw_handler) NULL, /* SIOCSIWTHRSPY */
(iw_handler) NULL, /* SIOCGIWTHRSPY */
(iw_handler) ieee80211_ioctl_siwap, /* SIOCSIWAP */
(iw_handler) ieee80211_ioctl_giwap, /* SIOCGIWAP */
(iw_handler) cfg80211_wext_siwmlme, /* SIOCSIWMLME */
(iw_handler) NULL, /* SIOCGIWAPLIST */
(iw_handler) cfg80211_wext_siwscan, /* SIOCSIWSCAN */
(iw_handler) cfg80211_wext_giwscan, /* SIOCGIWSCAN */
(iw_handler) ieee80211_ioctl_siwessid, /* SIOCSIWESSID */
(iw_handler) ieee80211_ioctl_giwessid, /* SIOCGIWESSID */
(iw_handler) NULL, /* SIOCSIWNICKN */
(iw_handler) NULL, /* SIOCGIWNICKN */
(iw_handler) NULL, /* -- hole -- */
(iw_handler) NULL, /* -- hole -- */
(iw_handler) ieee80211_ioctl_siwrate, /* SIOCSIWRATE */
(iw_handler) ieee80211_ioctl_giwrate, /* SIOCGIWRATE */
(iw_handler) cfg80211_wext_siwrts, /* SIOCSIWRTS */
(iw_handler) cfg80211_wext_giwrts, /* SIOCGIWRTS */
(iw_handler) cfg80211_wext_siwfrag, /* SIOCSIWFRAG */
(iw_handler) cfg80211_wext_giwfrag, /* SIOCGIWFRAG */
(iw_handler) ieee80211_ioctl_siwtxpower, /* SIOCSIWTXPOW */
(iw_handler) ieee80211_ioctl_giwtxpower, /* SIOCGIWTXPOW */
(iw_handler) cfg80211_wext_siwretry, /* SIOCSIWRETRY */
(iw_handler) cfg80211_wext_giwretry, /* SIOCGIWRETRY */
(iw_handler) ieee80211_ioctl_siwencode, /* SIOCSIWENCODE */
(iw_handler) ieee80211_ioctl_giwencode, /* SIOCGIWENCODE */
(iw_handler) ieee80211_ioctl_siwpower, /* SIOCSIWPOWER */
(iw_handler) ieee80211_ioctl_giwpower, /* SIOCGIWPOWER */
(iw_handler) NULL, /* -- hole -- */
(iw_handler) NULL, /* -- hole -- */
(iw_handler) ieee80211_ioctl_siwgenie, /* SIOCSIWGENIE */
(iw_handler) NULL, /* SIOCGIWGENIE */
(iw_handler) ieee80211_ioctl_siwauth, /* SIOCSIWAUTH */
(iw_handler) ieee80211_ioctl_giwauth, /* SIOCGIWAUTH */
(iw_handler) ieee80211_ioctl_siwencodeext, /* SIOCSIWENCODEEXT */
(iw_handler) NULL, /* SIOCGIWENCODEEXT */
(iw_handler) NULL, /* SIOCSIWPMKSA */
(iw_handler) NULL, /* -- hole -- */
};
const struct iw_handler_def ieee80211_iw_handler_def =
{
.num_standard = ARRAY_SIZE(ieee80211_handler),
.standard = (iw_handler *) ieee80211_handler,
.get_wireless_stats = ieee80211_get_wireless_stats,
};
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