Re: [PATCH net-next v1 2/2] net: dsa: microchip: Add partial ACL support for ksz9477 switches

[Vladimir Oltean]

On Thu, Apr 13, 2023 at 06:29:36AM +0200, Oleksij Rempel wrote:
> According to KSZ9477S 5.2.8.2 Port Priority Control Register
> "To achieve the desired functionality, do not set more than one bit at a
> time in this register.
> ...
> Bit 6 - OR’ed Priority
> ...
> Bit 2 - 802.1p Priority Classification
> Bit 1 - Diffserv Priority Classification
> Bit 0 - ACL Priority Classification
> "
> @Arun  what will happen if multiple engines are used for packet
> prioritization? For example ACL || Diffserv || 802.1p... ?
> If I see it correctly, it is possible but not recommended. Should I
> prevent usage of multiple prio sources? 

You could try and find out which one takes priority... we support VLAN
PCP and DSCP prioritization through the dcbnl application priority table.