On Sun, Jul 15, 2018 at 6:30 PM, Chopra, Manish <manish.cho...@cavium.com> wrote: > Hello Folks, > > I am trying to set below command to try mqprio offload on 4.18 kernel. It is > throwing the flowing error. > > # tc qdisc add dev eth0 root mqprio num_tc 2 map 1 1 1 1 0 0 0 0 > RTNETLINK answers: Numerical result out of range > > I can't really make out what's wrong with the above command, since this works > fine with other OS kernels. > Any thoughts if it is something broken on upstream kernel ? > > Thanks, > Manish
You might need to specify the traffic class for the 8 remaining priorities. The full map size is 16 entries, not just 8. The default value for the last 4 mapping entries is TC 3 which would be out of range if you only have 2 TCs specified. - Alex
