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@xxxxxxxxxxx>
---
I hadn't noticed that v2 of my mac80211 4-addr patch had been
merged already, so here's the fix from v3 as a separate patch
--- a/net/mac80211/rx.c
+++ b/net/mac80211/rx.c
@@ -1292,7 +1292,7 @@ ieee80211_deliver_skb(struct ieee80211_r
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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