virtio-net: correctly set xdp_xmit for mergeable buffer

jasowang · davem330 · commit dd5437974964 · 2017-09-22T18:15:33.000-07:00
We should set xdp_xmit only when xdp_do_redirect() succeed.

Cc: John Fastabend &lt;john.fastabend@gmail.com&gt;
Signed-off-by: Jason Wang &lt;jasowang@redhat.com&gt;
Signed-off-by: David S. Miller &lt;davem@davemloft.net&gt;
diff --git a/drivers/net/virtio_net.c b/drivers/net/virtio_net.c
@@ -721,7 +721,7 @@ static struct sk_buff *receive_mergeable(struct net_device *dev,
 			goto xdp_xmit;
 		case XDP_REDIRECT:
 			err = xdp_do_redirect(dev, &xdp, xdp_prog);
-			if (err)
+			if (!err)
 				*xdp_xmit = true;
 			rcu_read_unlock();
 			goto xdp_xmit;
