RE: [virtio-comment] Re: [PATCH v10] virtio-net: support inner header hash

[Parav Pandit <parav@nvidia.com>]

> From: Michael S. Tsirkin <mst@redhat.com>
> Sent: Thursday, March 16, 2023 3:36 AM
> 
> On Wed, Mar 15, 2023 at 07:24:57PM -0400, Parav Pandit wrote:
> > > So what's left, GRE?  GRE is actually different, in that it's not IP
> > > at all.
> > Sorry, I wrongly wrote nvegre above.
> >
> > IPoIP, GRE and NVGRE are left.
> >
> > vxlan and geneve has the udp src entropy.
> >
> > >
> > Not sure I understand "its not IP at all".
> >
> 
> GRE header is distinct from IP header and has its own flow ID.

Yes. GRE is IP header + GRE header.
The latest one has the key in GRE header, the older one has only IP.