On Thu, 17 Jun 2021 11:23:52 +0800, Jason Wang <[email protected]> wrote:
>
> 在 2021/6/10 下午4:22, Xuan Zhuo 写道:
> > Compared to the case of xsk tx, the case of xsk zc rx is more
> > complicated.
> >
> > When we process the buf received by vq, we may encounter ordinary
> > buffers, or xsk buffers. What makes the situation more complicated is
> > that in the case of mergeable, when num_buffer > 1, we may still
> > encounter the case where xsk buffer is mixed with ordinary buffer.
> >
> > Another thing that makes the situation more complicated is that when we
> > get an xsk buffer from vq, the xsk bound to this xsk buffer may have
> > been unbound.
> >
> > Signed-off-by: Xuan Zhuo <[email protected]>
>
>
> This is somehow similar to the case of tx where we don't have per vq reset.
>
> [...]
>
> >
> > -   if (vi->mergeable_rx_bufs)
> > +   if (is_xsk_ctx(ctx))
> > +           skb = receive_xsk(dev, vi, rq, buf, len, xdp_xmit, stats);
> > +   else if (vi->mergeable_rx_bufs)
> >             skb = receive_mergeable(dev, vi, rq, buf, ctx, len, xdp_xmit,
> >                                     stats);
> >     else if (vi->big_packets)
> > @@ -1175,6 +1296,14 @@ static bool try_fill_recv(struct virtnet_info *vi, 
> > struct receive_queue *rq,
> >     int err;
> >     bool oom;
> >
> > +   /* Because virtio-net does not yet support flow direct,
>
>
> Note that this is not the case any more. RSS has been supported by
> virtio spec and qemu/vhost/tap now. We just need some work on the
> virtio-net driver part (e.g the ethool interface).

Oh, are there any plans? Who is doing this work, can I help?

Thanks.

>
> Thanks
>
>
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