[PATCH net] net: dsa: mt7530: don't change PVC_EG_TAG when CPU port becomes VLAN-aware

[Vladimir Oltean]

Hi Arınç,

On Sun, Feb 05, 2023 at 10:25:27PM +0300, Arınç ÜNAL wrote:
> Unrelated to this, as in it existed before this patch, port at 0 hasn't been
> working at all on my MT7621AT Unielec U7621-06 board and MT7623NI Bananapi
> BPI-R2.
> 
> Packets are sent out from master eth1 fine, the computer receives them.
> Frames are received on eth1 but nothing shows on the DSA slave interface of
> port at 0. Sounds like malformed frames are received on eth1.

I need to ask, how do the packets look like on the RX path of the DSA
master, as seen by tcpdump -i eth1 -e -n -Q in -XX? If they aren't
received, can you post consecutive outputs from ethtool -S eth1 | grep -v ': 0',
to see what (error) counter increments?