Re: [PATCH net-next 08/13] net: dsa: hellcreek: deny tc-taprio changes to per-tc max SDU

Vladimir Oltean
2022-09-15T11:59:47Z

On Thu, Sep 15, 2022 at 08:15:54AM +0200, Kurt Kanzenbach wrote:
> > So the maxSDU hardware register tracks exactly the L2 payload size, like
> > the software variable does, or does it include the Ethernet header size
> > and/or FCS?
>
> This is something I'm not sure about. I'll ask the HW engineer when he's
> back from vacation.

You can also probably figure this out by limiting the max-sdu to a value
like 200 and seeing what frame sizes pass through.