Commit 4f312336 authored Feb 05, 2011 by Felix Fietkau Committed by John W. Linville Feb 07, 2011

mac80211: as a 4-addr station, do not receive packets for other stations



Since 4-addr frames completely override the source address which will
make it into the converted 802.3 frames, receiving frames for other
4-addr stations will confuse the bridging code.

To be able to handle traffic for all connected devices, the bridge
code will automatically turn on promiscuous mode, which triggers
this problem.

Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Reported-by: Steve Brown <sbrown@cortland.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

parent 180205bd

net/mac80211/rx.c

+2 −1

Original line number	Diff line number	Diff line
		@@ -2646,7 +2646,8 @@ static int prepare_for_handlers(struct ieee80211_rx_data *rx,
		return 0;
		if (!multicast &&
		compare_ether_addr(sdata->vif.addr, hdr->addr1) != 0) {
		if (!(sdata->dev->flags & IFF_PROMISC))
		if (!(sdata->dev->flags & IFF_PROMISC) \|\|
		sdata->u.mgd.use_4addr)
		return 0;
		status->rx_flags &= ~IEEE80211_RX_RA_MATCH;
		}