TX QOS: Spread traffic across multiple queues

[christophefontaine]

it would be nice to have a rehash on tx so any set of flows from a rx queue can be spread to a wide set of tx queue based on the mbuf' ingress RSS, flow hashes hard coded, flow hashes from any tbd models we could think adding (dynamic .so, userland eBPF, etc...).

Then, on tx it can combined with any of the DPDK tx qos (hardware schedulers, software ones, etc...) ; it would be a perfect benchmarking tools for DPDK and HW TX schedulers.

Originally posted by @vjardin in #153 (comment)

[christophefontaine]

While I'm not a fan (today) of a .so or an eBPF program to compute a hash, let's track this idea.