Messages in this thread | | | From | Kurt Kanzenbach <> | Subject | Re: [PATCH net-next 08/13] net: dsa: hellcreek: deny tc-taprio changes to per-tc max SDU | Date | Wed, 21 Sep 2022 13:23:24 +0200 |
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On Thu Sep 15 2022, Vladimir Oltean wrote: > 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.
So, configured to 128 and 132 bytes (including VLAN Ethernet header) is the maximum frame size which passes through.
Thanks, Kurt [unhandled content-type:application/pgp-signature] | |