From: "Michael S. Tsirkin" <mst@redhat.com>
Date: Thu, 31 Jan 2019 10:25:17 -0500

On Thu, Jan 31, 2019 at 08:40:30PM +0900, Toshiaki Makita wrote:

quoted

Previously virtnet_xdp_xmit() did not account for device tx counters,
which caused confusions.
To be consistent with SKBs, account them on freeing xdp_frames.

Reported-by: David Ahern <redacted>
Signed-off-by: Toshiaki Makita <redacted>

Well we count them on receive so I guess it makes sense for consistency

Acked-by: Michael S. Tsirkin <mst@redhat.com>

however, I really wonder whether adding more and more standard net stack
things like this will end up costing most of XDP its speed.

Should we instead make sure *not* to account XDP packets
in any counters at all? XDP programs can use maps
to do their own counting...

This has been definitely a discussion point, and something we should
develop a clear, strong, policy on.

David, Jesper, care to chime in where we ended up in that last thread
discussion this?