Re: [PATCH vhost 00/22] virtio-net: support AF_XDP zero copy

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On Wed, 11 Oct 2023 10:00:57 -0700, Jakub Kicinski <kuba@xxxxxxxxxx> wrote:
> On Wed, 11 Oct 2023 17:27:06 +0800 Xuan Zhuo wrote:
> > ## AF_XDP
> >
> > XDP socket(AF_XDP) is an excellent bypass kernel network framework. The zero
> > copy feature of xsk (XDP socket) needs to be supported by the driver. The
> > performance of zero copy is very good. mlx5 and intel ixgbe already support
> > this feature, This patch set allows virtio-net to support xsk's zerocopy xmit
> > feature.
>
> You're moving the driver and adding a major feature.
> This really needs to go via net or bpf.
> If you have dependencies in other trees please wait for
> after the merge window.


If so, I can remove the first two commits.

Then, the sq uses the premapped mode by default.
And we can use the api virtqueue_dma_map_single_attrs to replace the
virtqueue_dma_map_page_attrs.

And then I will fix that on the top.

Hi Micheal and Jason, is that ok for you?

Thanks.




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