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mac80211: Fix tx power setting

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power_level in ieee80211_conf is being used for more than one
purpose. It being used as user configured power limit and the
final power limit given to the driver. By doing so, except very
first time, the tx power limit is taken from min(chan->max_power,
local->hw.conf.power_level) which is not what we want. This patch
defines a new memeber in ieee80211_conf which is meant only for
user configured power limit.

Signed-off-by: Vasanthakumar Thiagarajan <vasanth@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Vasanthakumar Thiagarajan 2008-12-24 13:53:11 +05:30 committed by John W. Linville
parent a085ff718c
commit e3c92df08c
3 changed files with 6 additions and 5 deletions
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2
include/net/mac80211.h
View file

@ -546,6 +546,7 @@ enum ieee80211_conf_changed {
* @listen_interval: listen interval in units of beacon interval
* @flags: configuration flags defined above
* @power_level: requested transmit power (in dBm)
* @user_power_level: User configured transmit power (in dBm)
* @channel: the channel to tune to
* @ht: the HT configuration for the device
* @long_frame_max_tx_count: Maximum number of transmissions for a "long" frame
@ -559,6 +560,7 @@ struct ieee80211_conf {
int beacon_int;
u32 flags;
int power_level;
int user_power_level;
u16 listen_interval;
bool radio_enabled;

4
net/mac80211/main.c
View file

@ -214,10 +214,10 @@ int ieee80211_hw_config(struct ieee80211_local *local, u32 changed)
changed |= IEEE80211_CONF_CHANGE_CHANNEL;
}
if (!local->hw.conf.power_level)
if (!local->hw.conf.user_power_level)
power = chan->max_power;
else
power = min(chan->max_power, local->hw.conf.power_level);
power = min(chan->max_power, local->hw.conf.user_power_level);
if (local->hw.conf.power_level != power) {
changed |= IEEE80211_CONF_CHANGE_POWER;
local->hw.conf.power_level = power;

5
net/mac80211/wext.c
View file

@ -549,10 +549,9 @@ static int ieee80211_ioctl_siwtxpower(struct net_device *dev,
else /* Automatic power level setting */
new_power_level = chan->max_power;
if (local->hw.conf.power_level != new_power_level) {
local->hw.conf.power_level = new_power_level;
local->hw.conf.user_power_level = new_power_level;
if (local->hw.conf.power_level != new_power_level)
reconf_flags |= IEEE80211_CONF_CHANGE_POWER;
}
if (local->hw.conf.radio_enabled != !(data->txpower.disabled)) {
local->hw.conf.radio_enabled = !(data->txpower.disabled);