vhost/vsock: fix packet delivery order to monitoring devices

We want to deliver packets to monitoring devices before it is
put in the virtqueue, to avoid that replies can appear in the
packet capture before the transmitted packet.

Signed-off-by: Stefano Garzarella <sgarzare@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/vhost/vsock.c b/drivers/vhost/vsock.c
index e36aaf9..4f50dcb 100644 (file)
--- a/drivers/vhost/vsock.c
+++ b/drivers/vhost/vsock.c
@@ -181,14 +181,14 @@ vhost_transport_do_send_pkt(struct vhost_vsock *vsock,
                        break;
                }
 
-               vhost_add_used(vq, head, sizeof(pkt->hdr) + payload_len);
-               added = true;
-
-               /* Deliver to monitoring devices all correctly transmitted
-                * packets.
+               /* Deliver to monitoring devices all packets that we
+                * will transmit.
                 */
                virtio_transport_deliver_tap_pkt(pkt);
 
+               vhost_add_used(vq, head, sizeof(pkt->hdr) + payload_len);
+               added = true;
+
                pkt->off += payload_len;
                total_len += payload_len;