virtio: fix tx_ stats in virtio_net

get_buf() gives the length written by the other side, which will be
zero.  We want to add the skb length.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>

diff --git a/drivers/net/virtio_net.c b/drivers/net/virtio_net.c
index 555b70c8b8635226a1fa295c7334d5d70c34f939..1fd43e461ba572d750712b00cf5a37ccc1a44998 100644 (file)
--- a/drivers/net/virtio_net.c
+++ b/drivers/net/virtio_net.c
@@ -221,7 +221,7 @@ static void free_old_xmit_skbs(struct virtnet_info *vi)
        while ((skb = vi->svq->vq_ops->get_buf(vi->svq, &len)) != NULL) {
                pr_debug("Sent skb %p\n", skb);
                __skb_unlink(skb, &vi->send);
-               vi->dev->stats.tx_bytes += len;
+               vi->dev->stats.tx_bytes += skb->len;
                vi->dev->stats.tx_packets++;
                kfree_skb(skb);
        }