Re: [PATCH net-next 0/5] refine virtio-net XDP

On Mon, Jul 17, 2017 at 08:43:56PM +0800, Jason Wang wrote:

Hi:

This series brings two optimizations for virtio-net XDP:

- avoid reset during XDP set
- turn off offloads on demand

I'm glad to see this take shape - this can be
extended to optimize virtnet_get_headroom so we don't
waste room if adjust_head is enabled.

I see a couple of issues, responded to individual patches.

Please review.

Thanks

Jason Wang (5):
  virtio_ring: allow to store zero as the ctx
  virtio-net: pack headroom into ctx for mergeable buffer
  virtio-net: switch to use new ctx API for small buffer
  virtio-net: do not reset during XDP set
  virtio-net: switch off offloads on demand if possible on XDP set

 drivers/net/virtio_net.c     | 325 +++++++++++++++++++++++++------------------
 drivers/virtio/virtio_ring.c |   2 +-
 2 files changed, 194 insertions(+), 133 deletions(-)

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2.7.4