On Sat, 2011-02-05 at 23:48 +0100, Felix Fietkau wrote:
> 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@xxxxxxxxxxx>
> Reported-by: Steve Brown <sbrown@xxxxxxxxxxxx>
> ---
> net/mac80211/rx.c | 3 ++-
> 1 files changed, 2 insertions(+), 1 deletions(-)
>
> diff --git a/net/mac80211/rx.c b/net/mac80211/rx.c
> index b5f59ed..50c2c88 100644
> --- a/net/mac80211/rx.c
> +++ b/net/mac80211/rx.c
> @@ -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;
> }
Tested:
computer1->sta1->ap->sta2->computer2
Thanks,
Steve
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