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

Paolo Abeni
2025-01-14T15:04:42Z

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