Re: [PATCH net-next] net: dsa: hellcreek: Offload bridge port flags

On Mon Mar 15 2021, Vladimir Oltean wrote:

On Sun, Mar 14, 2021 at 01:52:08PM +0100, Kurt Kanzenbach wrote:

quoted

+	if (enable)
+		val &= ~HR_PTCFG_UUC_FLT;
+	else
+		val |= HR_PTCFG_UUC_FLT;

What does 'unknown unicast filtering' mean/do, exactly?
The semantics of BR_FLOOD are on egress: all unicast packets with an
unknown destination that are received on ports from this bridging domain
can be flooded towards port X if that port has flooding enabled.
When I hear "filtering", I imagine an ingress setting, am I wrong?

It means that frames without matching fdb entries towards this port are
discarded. There's also ingress filtering which works based on VLANs and
is used already.

Thanks,
Kurt