From: Vasanthakumar Thiagarajan <vasanth@atheros.com>
Date: Thu, 19 Feb 2009 10:11:52 +0000 (+0530)
Subject: ath9k: Filter out beacons from other BSS in STA mode
X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=dbaaa147d6396c41d8f31156a777dfdaae2335a4;p=openwrt%2Fstaging%2Fblogic.git

ath9k: Filter out beacons from other BSS in STA mode

Passing beacons received from other BSS to s/w in non-scanning
state is unnecessary in STA mode. This patch filters them out in
h/w.

Signed-off-by: Vasanthakumar Thiagarajan <vasanth@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
---

diff --git a/drivers/net/wireless/ath9k/mac.h b/drivers/net/wireless/ath9k/mac.h
index 74b660ae8add..862a63f7634b 100644
--- a/drivers/net/wireless/ath9k/mac.h
+++ b/drivers/net/wireless/ath9k/mac.h
@@ -566,8 +566,9 @@ enum ath9k_rx_filter {
 	ATH9K_RX_FILTER_BEACON = 0x00000010,
 	ATH9K_RX_FILTER_PROM = 0x00000020,
 	ATH9K_RX_FILTER_PROBEREQ = 0x00000080,
-	ATH9K_RX_FILTER_PSPOLL = 0x00004000,
 	ATH9K_RX_FILTER_PHYERR = 0x00000100,
+	ATH9K_RX_FILTER_MYBEACON = 0x00000200,
+	ATH9K_RX_FILTER_PSPOLL = 0x00004000,
 	ATH9K_RX_FILTER_PHYRADAR = 0x00002000,
 };
 
diff --git a/drivers/net/wireless/ath9k/recv.c b/drivers/net/wireless/ath9k/recv.c
index 28ad1d5af129..23b6f54cde5c 100644
--- a/drivers/net/wireless/ath9k/recv.c
+++ b/drivers/net/wireless/ath9k/recv.c
@@ -375,14 +375,15 @@ u32 ath_calcrxfilter(struct ath_softc *sc)
 	if (sc->rx.rxfilter & FIF_CONTROL)
 		rfilt |= ATH9K_RX_FILTER_CONTROL;
 
-	if (sc->sc_ah->opmode == NL80211_IFTYPE_STATION ||
-	    sc->sc_ah->opmode == NL80211_IFTYPE_ADHOC)
+	if ((sc->sc_ah->opmode == NL80211_IFTYPE_STATION) &&
+	    !(sc->rx.rxfilter & FIF_BCN_PRBRESP_PROMISC))
+		rfilt |= ATH9K_RX_FILTER_MYBEACON;
+	else
 		rfilt |= ATH9K_RX_FILTER_BEACON;
 
-	/* If in HOSTAP mode, want to enable reception of PSPOLL frames
-	   & beacon frames */
+	/* If in HOSTAP mode, want to enable reception of PSPOLL frames */
 	if (sc->sc_ah->opmode == NL80211_IFTYPE_AP)
-		rfilt |= (ATH9K_RX_FILTER_BEACON | ATH9K_RX_FILTER_PSPOLL);
+		rfilt |= ATH9K_RX_FILTER_PSPOLL;
 
 	return rfilt;