virtio-net: correctly transmit XDP buff after linearizing
authorJason Wang <jasowang@redhat.com>
Tue, 22 May 2018 03:44:29 +0000 (11:44 +0800)
committerDavid S. Miller <davem@davemloft.net>
Wed, 23 May 2018 17:36:19 +0000 (13:36 -0400)
commit5d458a13dd59d04b4d6658a6d5b94d42732b15ae
tree27fb76cef17f55beb1c8c498f63849da396e5663
parent6890418bbb780f0ee9cf124055afa79777f1b4f1
virtio-net: correctly transmit XDP buff after linearizing

We should not go for the error path after successfully transmitting a
XDP buffer after linearizing. Since the error path may try to pop and
drop next packet and increase the drop counters. Fixing this by simply
drop the refcnt of original page and go for xmit path.

Fixes: 72979a6c3590 ("virtio_net: xdp, add slowpath case for non contiguous buffers")
Cc: John Fastabend <john.fastabend@gmail.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
drivers/net/virtio_net.c