Re: [virtio-dev] Re: [virtio-comment] Re: [virtio-dev] Re: [virtio-comment] Re: [virtio-dev] Re: [PATCH v9] virtio-net: support inner header hash

[Heng Qi <hengqi@linux.alibaba.com>]

å 2023/4/8 äå6:29, Michael S. Tsirkin åé:
> On Thu, Mar 30, 2023 at 08:37:21PM +0800, Heng Qi wrote:
> > å 2023/3/21 äå3:48, Michael S. Tsirkin åé:
> > > On Wed, Mar 15, 2023 at 08:55:45PM +0800, Heng Qi wrote:
> > > > We use the most basic GRE header fields (not NVGRE), not even optional
> > > > fields.
> > > I'd say yes, the most convincing usecase is with legacy GRE.
> > Yes. But we still have a strong need for VXLAN and GENEVE to do symmetric
> > hashing. Please consider this.
> Using a specific key seems fragile though in that a different one is
> needed for e.g. ipv4 and ipv6.  An issue with VXLAN and GENEVE, yes?

Yes.

> Will support for XOR hashing address this sufficiently or is that not
> acceptable to you? Or alternatively a modified Toeplitz, e.g. this

This is a very good opinion, I will want to follow up on this work and I 
have expressed in other threads.

Thanks.

> https://inbox.dpdk.org/dev/20190731123040.GG4512@6wind.com/
> suggests Mellanox supports that. WDYT?