virtio-net: remove useless codes

After commit 40bad8f3deba15e2074ff34cfe923c12916b1cc5("virtio-net: fix
used len for tx"), async_tx.len was no longer used afterwards. So
remove useless codes with it.

Signed-off-by: Jason Wang <jasowang@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>

1 files changed, 2 insertions, 6 deletions

diff --git a/hw/net/virtio-net.c b/hw/net/virtio-net.c
index 1510839..8d28e45 100644
--- a/hw/net/virtio-net.c
+++ b/hw/net/virtio-net.c
@@ -1124,7 +1124,7 @@ static void virtio_net_tx_complete(NetClientState *nc, ssize_t len)
     virtqueue_push(q->tx_vq, &q->async_tx.elem, 0);
     virtio_notify(vdev, q->tx_vq);
 
-    q->async_tx.elem.out_num = q->async_tx.len = 0;
+    q->async_tx.elem.out_num = 0;
 
     virtio_queue_set_notification(q->tx_vq, 1);
     virtio_net_flush_tx(q);
@@ -1148,7 +1148,7 @@ static int32_t virtio_net_flush_tx(VirtIONetQueue *q)
     }
 
     while (virtqueue_pop(q->tx_vq, &elem)) {
-        ssize_t ret, len;
+        ssize_t ret;
         unsigned int out_num = elem.out_num;
         struct iovec *out_sg = &elem.out_sg[0];
         struct iovec sg[VIRTQUEUE_MAX_SIZE], sg2[VIRTQUEUE_MAX_SIZE + 1];
@@ -1196,18 +1196,14 @@ static int32_t virtio_net_flush_tx(VirtIONetQueue *q)
             out_sg = sg;
         }
 
-        len = n->guest_hdr_len;
-
         ret = qemu_sendv_packet_async(qemu_get_subqueue(n->nic, queue_index),
                                       out_sg, out_num, virtio_net_tx_complete);
         if (ret == 0) {
             virtio_queue_set_notification(q->tx_vq, 0);
             q->async_tx.elem = elem;
-            q->async_tx.len  = len;
             return -EBUSY;
         }
 
-        len += ret;
 drop:
         virtqueue_push(q->tx_vq, &elem, 0);
         virtio_notify(vdev, q->tx_vq);