[PATCH net-next v3 2/3] net: stmmac: add tc-mqprio qdisc offload

[Jakub Kicinski]

On Sat, 08 Aug 2026 16:49:58 +0200 Lorenzo Bianconi wrote:
> Subject: [PATCH net-next v3 2/3] net: stmmac: add tc-mqprio qdisc offload
> 
> Implement offload of the tc-mqprio qdisc in the stmmac driver. The MTL TX
> scheduler is switched to strict priority, and the PSTQX/PSTC priority
> bitmask of each TX queue is programmed from the set of frame priorities
> mapped to the owning traffic class (qopt->prio_tc_map).
> 
> The offload requires the DCB feature and a 1:1 TC to TX queue mapping,
> with the queue ranges bounded by the number of queues the MAC implements.
> Configurations with AVB queues are rejected, since forcing strict
> priority conflicts with the CBS algorithm.

Clashiko has a bunch of comments, I assume at least one of them is
actionable. High level - you say "add tc-mqprio qdisc offload"
but the driver already has a bunch of mqprio code. Background
would be useful. You also say "1:1 TC to TX queue mapping", if there's
only one queue per priority why offload mqprio and not prio?
At least a note in the commit message would be useful.