[virtio-comment] Re: [virtio-dev] Re: [PATCH v11] virtio-net: support inner header hash

["Michael S. Tsirkin" <mst@redhat.com>]

On Tue, Mar 21, 2023 at 04:19:17AM +0000, Parav Pandit wrote:
> One (this proposal) is solving spread to different RSS queues.

Spread is mostly ok with modern protocols though. It seems to
optimize for a specific monitoring solution.

> Another one is finding out which exact packet to drop/pass when queue usage is high. (ebpf/tc other ways to solve it).
> 
> Ebpf sounds cooler than the real offload implementation in the hw device at the current level.
> I remember Jason's good talk on the ebpf a few years back, which is possible when done in sw on the hypervisor.

I was talking about classic bpf though. no state.

> On mlx5 device inner hash is supported for IPnIP and GRE tunnels.

which variants of GRE are supported?

> None of the existing users see tunnel attacks when used as forwarding plane.

good to know.

-- 
MST


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