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mac80211: fix user antenna gain calculation 

Signed-off-by: Felix Fietkau <nbd@openwrt.org>

SVN-Revision: 40429
lede-17.01
Felix Fietkau 2014-04-08 22:11:23 +00:00
parent fe2c9b4e1d
commit 26b8bb6150
1 changed files with 5 additions and 15 deletions
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20
package/kernel/mac80211/patches/522-mac80211_configure_antenna_gain.patch
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@ -102,34 +102,24 @@
struct cfg80211_chan_def chandef = {};
u32 changed = 0;
- int power;
+ int power, ant_gain, max_power;
+ int power, max_power;
u32 offchannel_flag;
offchannel_flag = local->hw.conf.flags & IEEE80211_CONF_OFFCHANNEL;
@@ -156,8 +156,21 @@ static u32 ieee80211_hw_conf_chan(struct
@@ -156,6 +156,12 @@ static u32 ieee80211_hw_conf_chan(struct
}
rcu_read_unlock();
- if (local->hw.conf.power_level != power) {
+ max_power = chandef.chan->max_reg_power;
+ ant_gain = chandef.chan->max_antenna_gain;
+ if (local->user_antenna_gain > 0) {
+ if (local->user_antenna_gain > ant_gain) {
+ max_power -= local->user_antenna_gain - ant_gain;
+ ant_gain = 0;
+ } else
+ ant_gain -= local->user_antenna_gain;
+ max_power -= local->user_antenna_gain;
+ power = min(power, max_power);
+ }
+
+ if (local->hw.conf.power_level != power ||
+ local->hw.conf.max_antenna_gain != ant_gain) {
if (local->hw.conf.power_level != power) {
changed |= IEEE80211_CONF_CHANGE_POWER;
+ local->hw.conf.max_antenna_gain = ant_gain;
local->hw.cur_power_level = power;
local->hw.conf.power_level = power;
}
@@ -584,6 +597,7 @@ struct ieee80211_hw *ieee80211_alloc_hw(
@@ -584,6 +590,7 @@ struct ieee80211_hw *ieee80211_alloc_hw(
IEEE80211_RADIOTAP_MCS_HAVE_BW;
local->hw.radiotap_vht_details = IEEE80211_RADIOTAP_VHT_KNOWN_GI |
IEEE80211_RADIOTAP_VHT_KNOWN_BANDWIDTH;