[RFC net-next 1/2] net: dsa: tag_mtk: skip address learning on transmit to standalone ports

[DENG Qingfang]

On Fri, Jul 30, 2021 at 10:07:06PM +0300, Vladimir Oltean wrote:
> > After enabling it, I noticed .port_fdb_{add,del} are called with VID=0
> > (which it does not use now) unless I turn on VLAN filtering. Is that
> > normal?
> 
> They are called with the VID from the learned packet.
> If the bridge is VLAN-unaware, the MAC SA is learned with VID 0.
> Generally, VID 0 is always used for VLAN-unaware bridging. You can
> privately translate VID 0 to whatever VLAN ID you use in VLAN-unaware
> mode.

Now the issue is PVID is always set to the bridge's vlan_default_pvid,
regardless of VLAN awareless.