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virtio-net: re enable XDP_REDIRECT for mergeable buffer
authorJason Wang <jasowang@redhat.com>
Fri, 2 Mar 2018 09:29:14 +0000 (17:29 +0800)
committerDavid S. Miller <davem@davemloft.net>
Mon, 5 Mar 2018 03:16:36 +0000 (22:16 -0500)
commit3cc81a9aac43829d86ebf775c388b42d770bc0ac
tree0d0660438a787fd1addd589e5f79c72fc41e7f71
parent77f840e3e5f09c6d7d727e85e6e08276dd813d11
virtio-net: re enable XDP_REDIRECT for mergeable buffer

XDP_REDIRECT support for mergeable buffer was removed since commit
7324f5399b06 ("virtio_net: disable XDP_REDIRECT in receive_mergeable()
case"). This is because we don't reserve enough tailroom for struct
skb_shared_info which breaks XDP assumption. So this patch fixes this
by reserving enough tailroom and using fixed size of rx buffer.

Signed-off-by: Jason Wang <jasowang@redhat.com>
Acked-by: Jesper Dangaard Brouer <brouer@redhat.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
drivers/net/virtio_net.c