virtio-net: remove unused skb_vnet_hdr->num_sg field

[Split from "correct capacity math on ring full" -- Rusty]

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Acked-by: Michael S. Tsirkin <mst@redhat.com>

1 files changed, 3 insertions, 3 deletions

diff --git a/drivers/net/virtio_net.c b/drivers/net/virtio_net.c
index 3db65867895b..6c094c88424e 100644
--- a/drivers/net/virtio_net.c
+++ b/drivers/net/virtio_net.c
@@ -95,7 +95,6 @@ struct skb_vnet_hdr {
                 struct virtio_net_hdr hdr;
                 struct virtio_net_hdr_mrg_rxbuf mhdr;
         };
-        unsigned int num_sg;
 };
 
 struct padded_vnet_hdr {
@@ -579,6 +578,7 @@ static int xmit_skb(struct virtnet_info *vi, struct sk_buff *skb)
 {
         struct skb_vnet_hdr *hdr = skb_vnet_hdr(skb);
         const unsigned char *dest = ((struct ethhdr *)skb->data)->h_dest;
+        unsigned num_sg;
 
         pr_debug("%s: xmit %p %pM\n", vi->dev->name, skb, dest);
 
@@ -617,8 +617,8 @@ static int xmit_skb(struct virtnet_info *vi, struct sk_buff *skb)
         else
                 sg_set_buf(vi->tx_sg, &hdr->hdr, sizeof hdr->hdr);
 
-        hdr->num_sg = skb_to_sgvec(skb, vi->tx_sg + 1, 0, skb->len) + 1;
-        return virtqueue_add_buf(vi->svq, vi->tx_sg, hdr->num_sg,
+        num_sg = skb_to_sgvec(skb, vi->tx_sg + 1, 0, skb->len) + 1;
+        return virtqueue_add_buf(vi->svq, vi->tx_sg, num_sg,
                                  0, skb, GFP_ATOMIC);
 }