On Wed, Feb 08, 2023 at 05:18:32AM +0000, Parav Pandit wrote: > > From: Heng Qi <hen...@linux.alibaba.com> > > Sent: Tuesday, February 7, 2023 10:25 PM > > [..] > > >> > > >> Do you think we need both hash_types and hash_tunnel_types? > > > In struct virtio_net_config we need two fields. > > > a. supported_hash_types (already exists) b. supported_hash_tunnel_type > > > -> bitmap indicating for which outer headers, inner hash calculation is > > supported. > > > > Thanks for the suggestion, we seem to have reached an agreement. > > > > > > > > In struct virtio_net_hdr we need two fields. > > > a. hash_report (already exists) > > > b. hash_tunnel_type 8 bits -> absolute value indicating which outer header > > exists when inner header hash calculated. > > > You already have it in your patch named as hash_report_tunnel. > > > May be better to name as hash_report_tunnel_type to make it clearer that > > > its > > type. > > > > Sure. > > > > Thanks for your reply. > > I had one last question. Why do we need to inform the hash_report_tunnel_type > of the outer header in the virtio_net_hdr? > Is this for debug? Or is there a use case that will process this value?
Well we have hash_report which is kind of similar (and also kind of pointless but I think it's there because WHQL wants it). Maybe we can steal some bits from there instead of a new field? I have a follow up question though: are we only hashing the inner header or both inner and outer header? Somewhat confused on this. In fact, CC Yuri for thoughts and suggestions from windows side of things. -- MST --------------------------------------------------------------------- To unsubscribe, e-mail: virtio-dev-unsubscr...@lists.oasis-open.org For additional commands, e-mail: virtio-dev-h...@lists.oasis-open.org
