> On 3 Jun 2026, at 7:12 am, Luke Howard <[email protected]> wrote:
>
>> In case of per port priority mapping, i don't know if this is working as
>> expected, as the IEEE priority mapping is done at ingress.
>> Eg. i think if MQPRIO channel mode is used to configure a pcp to queue
>> mapping
>> on port 1 and a different mapping on port 2. Traffic received on port 1 that
>> gets forwarded to port 2 and egresses port 2 will end up in the queue
>> configured by the mapping on port 1. As mqprio is an egress qdisc, i don't
>> think that's expected.
>
> Good point, it’s interesting there is egress mapping on the 6390 but only for
> FPri to DSCP. The Frame Priority Table set ordinal one would expect for
> egress QPri mapping is “reserved for future use”. (Be nice if it were an
> undocumented feature.)
I misread the data sheet. Egress PCP to FPRI mapping is possible per-port on
the 6390 family. This doesn’t resolve the other issue (MQPRIO-less ports on the
6352 family). But it is good news and I will revise accordingly in the next
patch revision.
