Re: [PATCH net-next v2 5/6] net: dsa: mv88e6xxx: MQPRIO support

[Luke Howard]

>> 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.


I did not misread the data sheet. The 6390 family does not support egress FPri to QPri mapping. It supports egress FPri to _PCP_ mapping (i.e. the internal and wire representations of the priority can differ). Clearly needed a third coffee.

Luke