[ovs-discuss] High Priority Traffic Path (dscp) for DPDK-OvS

[Bodireddy, Bhanuprakash]

>Hi all
>
>I need to specify a number of classes of service according to DSCP bits. Each
>class of service should be associated with a priority. For example: Packet A is
>sent with a DSCP value of 0 and packet B is sent with a value of 46; 0 has a
>lower priority than 46. Packet A arrives before packet B. If DPDK-OvS has been
>configured as such, Packet B will be transmitted before Packet A.
>
>I know that hardware switches have been designed to ensure certain classes
>of traffic can be scheduled ahead of other classes, also kernel mode OvS has
>the similar behavior coming from Linux kernel (tc, qdisk etc..). However, does
>DPDK-OvS have the same behavior? In master branch, I could not find any
>kind of scheduler to achieve this behavior.

OvS-DPDK in master doesn't prioritize packet based on PCP/DSCP fields. 

Regards,
Bhanuprakash.