From f501dba4c4c5bda1b64c941997ab7ece1d503945 Mon Sep 17 00:00:00 2001
From: Felix Fietkau <nbd@openwrt.org>
Date: Wed, 11 Nov 2009 13:17:36 +0100
Subject: [PATCH] mac80211: fix broadcast frame handling for 4-addr AP VLANs
Without this patch, broadcast frames from the station behind a
4-addr AP VLAN would be reflected back to the source.
Fix this by checking the 4-addr flag before bridging multicast
frames in the cell.
Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
---
net/mac80211/rx.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/net/mac80211/rx.c b/net/mac80211/rx.c
index 006cf89df70b..6bce97ee2534 100644
--- a/net/mac80211/rx.c
+++ b/net/mac80211/rx.c
@@ -1236,7 +1236,7 @@ ieee80211_deliver_skb(struct ieee80211_rx_data *rx)
if ((sdata->vif.type == NL80211_IFTYPE_AP ||
sdata->vif.type == NL80211_IFTYPE_AP_VLAN) &&
!(sdata->flags & IEEE80211_SDATA_DONT_BRIDGE_PACKETS) &&
- (rx->flags & IEEE80211_RX_RA_MATCH)) {
+ (rx->flags & IEEE80211_RX_RA_MATCH) && !rx->sdata->use_4addr) {
if (is_multicast_ether_addr(ehdr->h_dest)) {
/*
* send multicast frames both to higher layers in
--
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