Re: [PATCH net-next 0/2] net: dsa: mv88e6xxx: add support for dcb pcp app

[Luke Howard]

> On 4 Jun 2026, at 6:30 pm, Cedric Jehasse via B4 Relay <devnull+cedric.jehasse.luminex.be@xxxxxxxxxx> wrote:
> 
> There's another patch series [1] on the mailing list that uses the same
> IEEE PRI Mapping table to implement MPQRIO. To me the dcb pcp app feels
> like the natural way to configure the pcp to QPri mappings in the
> switch

I’m not familiar with the API or user tools, but the fact it supports both global and ingress mappings makes it seem like a better option, agreed.

It seems like we maybe could support MQPRIO properly with TCAM but perhaps that isn’t really necessary (certainly not for my all-ports-in-bridge use case, where there isn’t a distinction between ingress and egress priority mappings).

I still need to find a similarly natural way to expose the switch’s AVB capabilities / 802.1Qat admission control. Perhaps there is none and it will need to remain a local patch.