[PATCH net v2] net: dsa: mt7530: fix VLAN traffic leaks

[Florian Fainelli]

On 5/23/2021 7:51 AM, DENG Qingfang wrote:
> PCR_MATRIX field was set to all 1's when VLAN filtering is enabled, but
> was not reset when it is disabled, which may cause traffic leaks:
> 
> 	ip link add br0 type bridge vlan_filtering 1
> 	ip link add br1 type bridge vlan_filtering 1
> 	ip link set swp0 master br0
> 	ip link set swp1 master br1
> 	ip link set br0 type bridge vlan_filtering 0
> 	ip link set br1 type bridge vlan_filtering 0
> 	# traffic in br0 and br1 will start leaking to each other
> 
> As port_bridge_{add,del} have set up PCR_MATRIX properly, remove the
> PCR_MATRIX write from mt7530_port_set_vlan_aware.
> 
> Fixes: 83163f7dca56 ("net: dsa: mediatek: add VLAN support for MT7530")
> Signed-off-by: DENG Qingfang <dqfext at gmail.com>

Reviewed-by: Florian Fainelli <f.fainelli at gmail.com>
-- 
Florian