Re: [PATCH v11 0/4] virtio-net: define UDP tunnel offload

Michael S. Tsirkin
2025-01-14T15:17:02Z

On Tue, Jan 14, 2025 at 04:04:35PM +0100, Paolo Abeni wrote:
> On 11/27/24 10:48 AM, Paolo Abeni wrote:
> > On 11/27/24 10:36, Paolo Abeni wrote:
> >> UDP tunnel usage is ubiquitous in container deployment, and the ability
> >> to offload UDP encapsulated GSO traffic impacts greatly the performances
> >> and the CPU utilization of such use cases.
> >>
> >> This series includes:
> >> - clarifications on the current semantic of NEEDS_CSUM offload
> >> (patch 1) and DATA_VALID offload (patch 2) to make later changes easier
> >> to follow,
> >> - new features definition to handle both UDP tunnel segmentation
> >> offload (patch 3).
> >> - new features definition to handle UDP tunnel outer checksum offload
> >> (patch 4).
> >>
> >> A PoC implementation is available here:
> >>
> >> https://github.com/pabeni/linux-devel/commits/virtio_tunnel_gso_v10/
> >> https://github.com/pabeni/qemu/tree/virtio_tunnel_gso_v9
> >>
> >> Note that both implementations has not been updated since the previous
> >> iteration, since there are no additional functional changes in v11.
> >>
> >> Changes from v10:
> >> - added patch 2
> >> - clarified only a single encapsulation level is supported (patch 3)
> >> - s/TCP or UDP GSO packets/GSO packets/ (patch 3)
> >> - 'to the outer UDP pseudo header' -> 'to the outer UDP pseudo header
> >> checksum' (patch 4)
> >> https://lore.kernel.org/virtio-comment/cover.1731084277.git.pabeni@redhat.com/
>
> I understand all the points under discussion have been addressed. I'm
> wondering the next steps are and what I could do to move things forward.
>
> Thanks,
>
> Paolo

See
https://github.com/oasis-tcs/virtio-spec?tab=readme-ov-file#use-of-github-issues

for the process to get a change merged once there is concensus.

--
MST