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--- a/drivers/net/wireless/ath/ath9k/hw.c
+++ b/drivers/net/wireless/ath/ath9k/hw.c
@@ -1211,6 +1211,7 @@ void ath9k_hw_init_global_settings(struc
{
struct ieee80211_conf *conf = &ath9k_hw_common(ah)->hw->conf;
int acktimeout;
+ int slottime;
int sifstime;
ath_print(ath9k_hw_common(ah), ATH_DBG_RESET, "ah->misc_mode 0x%x\n",
@@ -1225,8 +1226,10 @@ void ath9k_hw_init_global_settings(struc
else
sifstime = 10;
- acktimeout = ah->slottime + sifstime;
- ath9k_hw_setslottime(ah, ah->slottime);
+ /* As defined by IEEE 802.11-2007 17.3.8.6 */
+ slottime = ah->slottime + 3 * ah->coverage_class;
+ acktimeout = slottime + sifstime;
+ ath9k_hw_setslottime(ah, slottime);
ath9k_hw_set_ack_timeout(ah, acktimeout);
ath9k_hw_set_cts_timeout(ah, acktimeout);
if (ah->globaltxtimeout != (u32) -1)
--- a/drivers/net/wireless/ath/ath9k/hw.h
+++ b/drivers/net/wireless/ath/ath9k/hw.h
@@ -551,6 +551,7 @@ struct ath_hw {
u32 *bank6Temp;
int16_t txpower_indexoffset;
+ int coverage_class;
u32 beacon_interval;
u32 slottime;
u32 globaltxtimeout;
--- a/drivers/net/wireless/ath/ath9k/main.c
+++ b/drivers/net/wireless/ath/ath9k/main.c
@@ -2015,6 +2015,18 @@ static void ath9k_sw_scan_complete(struc
mutex_unlock(&sc->mutex);
}
+static void ath9k_set_coverage_class(struct ieee80211_hw *hw, u8 coverage_class)
+{
+ struct ath_wiphy *aphy = hw->priv;
+ struct ath_softc *sc = aphy->sc;
+ struct ath_hw *ah = sc->sc_ah;
+
+ mutex_lock(&sc->mutex);
+ ah->coverage_class = coverage_class;
+ ath9k_hw_init_global_settings(ah);
+ mutex_unlock(&sc->mutex);
+}
+
struct ieee80211_ops ath9k_ops = {
.tx = ath9k_tx,
.start = ath9k_start,
@@ -2034,4 +2046,5 @@ struct ieee80211_ops ath9k_ops = {
.sw_scan_start = ath9k_sw_scan_start,
.sw_scan_complete = ath9k_sw_scan_complete,
.rfkill_poll = ath9k_rfkill_poll_state,
+ .set_coverage_class = ath9k_set_coverage_class,
};
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