Re: [PATCH net-next] tun: use xdp_get_frame_len()

[Jesper Dangaard Brouer]

On 08/05/2025 16.24, Jon Kohler wrote:
> > On May 8, 2025, at 10:16 AM, Jesper Dangaard Brouer <hawk@xxxxxxxxxx> wrote:
[...]
> > AFAICR there is also some dual packet handling code path for XDP in
> > vhost_net/tun.  I'm also willing to take the paper-cut, for cleaning
> > that up.
> >
> > --Jesper
>
> When you say dual packet handling, what are you referring to specifically?

The important part of the sentence was *code path*, as in multiple code 
path for packets.

You tricked me into looking up the code for you...

It was in drivers/net/virtio_net.c where function receive_buf() calls[1]
three different functions based on different checks.  Some cases support
XDP and others don't.  I though you talked about this in another thread?

--Jesper

[1] 
https://elixir.bootlin.com/linux/v6.15-rc5/source/drivers/net/virtio_net.c#L2570-L2573