summaryrefslogtreecommitdiff
path: root/drivers/net/xen-netback/netback.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/net/xen-netback/netback.c')
-rw-r--r--drivers/net/xen-netback/netback.c15
1 files changed, 12 insertions, 3 deletions
diff --git a/drivers/net/xen-netback/netback.c b/drivers/net/xen-netback/netback.c
index f09948b009dd..1d9940d4e8c7 100644
--- a/drivers/net/xen-netback/netback.c
+++ b/drivers/net/xen-netback/netback.c
@@ -1169,15 +1169,24 @@ static int xenvif_tx_submit(struct xenvif_queue *queue)
continue;
}
- skb_probe_transport_header(skb, 0);
+ skb_probe_transport_header(skb);
/* If the packet is GSO then we will have just set up the
* transport header offset in checksum_setup so it's now
* straightforward to calculate gso_segs.
*/
if (skb_is_gso(skb)) {
- int mss = skb_shinfo(skb)->gso_size;
- int hdrlen = skb_transport_header(skb) -
+ int mss, hdrlen;
+
+ /* GSO implies having the L4 header. */
+ WARN_ON_ONCE(!skb_transport_header_was_set(skb));
+ if (unlikely(!skb_transport_header_was_set(skb))) {
+ kfree_skb(skb);
+ continue;
+ }
+
+ mss = skb_shinfo(skb)->gso_size;
+ hdrlen = skb_transport_header(skb) -
skb_mac_header(skb) +
tcp_hdrlen(skb);