ath5k: disable beacon filter when station is not associated

Ath5k driver has too many interrupts per second at idle
http://bugzilla.kernel.org/show_bug.cgi?id=11749

Signed-off-by: Martin Xu <martin.xu@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

diff --git a/drivers/net/wireless/ath5k/base.c b/drivers/net/wireless/ath5k/base.c
index cfd4d05..2d14255 100644 (file)
--- a/drivers/net/wireless/ath5k/base.c
+++ b/drivers/net/wireless/ath5k/base.c
@@ -240,6 +240,10 @@ static u64 ath5k_get_tsf(struct ieee80211_hw *hw);
 static void ath5k_reset_tsf(struct ieee80211_hw *hw);
 static int ath5k_beacon_update(struct ieee80211_hw *hw,
                struct sk_buff *skb);
+static void ath5k_bss_info_changed(struct ieee80211_hw *hw,
+               struct ieee80211_vif *vif,
+               struct ieee80211_bss_conf *bss_conf,
+               u32 changes);
 
 static struct ieee80211_ops ath5k_hw_ops = {
        .tx             = ath5k_tx,
@@ -256,6 +260,7 @@ static struct ieee80211_ops ath5k_hw_ops = {
        .get_tx_stats   = ath5k_get_tx_stats,
        .get_tsf        = ath5k_get_tsf,
        .reset_tsf      = ath5k_reset_tsf,
+       .bss_info_changed = ath5k_bss_info_changed,
 };
 
 /*
@@ -2942,7 +2947,7 @@ static void ath5k_configure_filter(struct ieee80211_hw *hw,
                sc->opmode != NL80211_IFTYPE_MESH_POINT &&
                test_bit(ATH_STAT_PROMISC, sc->status))
                rfilt |= AR5K_RX_FILTER_PROM;
-       if (sc->opmode == NL80211_IFTYPE_STATION ||
+       if ((sc->opmode == NL80211_IFTYPE_STATION && sc->assoc) ||
                sc->opmode == NL80211_IFTYPE_ADHOC) {
                rfilt |= AR5K_RX_FILTER_BEACON;
        }
@@ -3083,4 +3088,32 @@ ath5k_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb)
 end:
        return ret;
 }
+static void
+set_beacon_filter(struct ieee80211_hw *hw, bool enable)
+{
+       struct ath5k_softc *sc = hw->priv;
+       struct ath5k_hw *ah = sc->ah;
+       u32 rfilt;
+       rfilt = ath5k_hw_get_rx_filter(ah);
+       if (enable)
+               rfilt |= AR5K_RX_FILTER_BEACON;
+       else
+               rfilt &= ~AR5K_RX_FILTER_BEACON;
+       ath5k_hw_set_rx_filter(ah, rfilt);
+       sc->filter_flags = rfilt;
+}
 
+static void ath5k_bss_info_changed(struct ieee80211_hw *hw,
+                                   struct ieee80211_vif *vif,
+                                   struct ieee80211_bss_conf *bss_conf,
+                                   u32 changes)
+{
+       struct ath5k_softc *sc = hw->priv;
+       if (changes & BSS_CHANGED_ASSOC) {
+               mutex_lock(&sc->lock);
+               sc->assoc = bss_conf->assoc;
+               if (sc->opmode == NL80211_IFTYPE_STATION)
+                       set_beacon_filter(hw, sc->assoc);
+               mutex_unlock(&sc->lock);
+       }
+}

diff --git a/drivers/net/wireless/ath5k/base.h b/drivers/net/wireless/ath5k/base.h
index 06d1054..facc60d 100644 (file)
--- a/drivers/net/wireless/ath5k/base.h
+++ b/drivers/net/wireless/ath5k/base.h
@@ -179,6 +179,7 @@ struct ath5k_softc {
 
        struct timer_list       calib_tim;      /* calibration timer */
        int                     power_level;    /* Requested tx power in dbm */
+       bool                    assoc;          /* assocate state */
 };
 
 #define ath5k_hw_hasbssidmask(_ah) \