Re: net: dsa: mv88e6xxx architecture

Vladimir Oltean
2024-12-20T22:54:38Z

On Sat, Dec 21, 2024 at 08:43:50AM +1100, Luke Howard Bentata wrote:
> Hi Vladimir,
>
> > I think we need an AVB primer. What identifies an AVB stream? Should the
> > kernel have a database of them? What actions need to be taken for AVB
> > streams different than for best effort traffic? Is it about scheduling
> > priority, or about resource reservations, or? Does the custom behavior
> > pertain only to AVB streams or is it a more widely useful mechanism?
>
> The catch is what to do with frames that share a priority with an AVB
> class but are not negotiated by SRP. These frames could crowd out
> frames from AVB streams. Marvell’s solution is a flag in the ATU which
> indicates that the DA was added by SRP.

Can you please state in a vendor-agnostic way what does the switch do
with that information, how does it treat those streams specially?