Re: [net-next v3 1/2] net: sched: use queue_mapping to pick tx queue

On Thu, Dec 9, 2021 at 6:36 PM [off-list ref] wrote:

From: Tonghao Zhang <redacted>

This patch fix issue:
* If we install tc filters with act_skbedit in clsact hook.
  It doesn't work, because netdev_core_pick_tx() overwrites
  queue_mapping.

  $ tc filter ... action skbedit queue_mapping 1

Interesting, but bpf offers a helper (bpf_set_hash()) to overwrite
skb->hash which could _indirectly_ be used to change queue_mapping.
Does it not work?

BTW, for this skbedit action, I guess it is probably because skbedit was
introduced much earlier than clsact.

Thanks.