net: bridge: check the length of skb after nf_bridge_maybe_copy_header()
Since nf_bridge_maybe_copy_header() may change the length of skb,
we should check the length of skb after it to handle the ppoe skbs.
Signed-off-by: Changli Gao <xiaosuo@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/bridge/br_forward.c b/net/bridge/br_forward.c
index 2bd11ec..ee64287 100644
--- a/net/bridge/br_forward.c
+++ b/net/bridge/br_forward.c
@@ -41,17 +41,13 @@
int br_dev_queue_push_xmit(struct sk_buff *skb)
{
- /* drop mtu oversized packets except gso */
- if (packet_length(skb) > skb->dev->mtu && !skb_is_gso(skb))
+ /* ip_fragment doesn't copy the MAC header */
+ if (nf_bridge_maybe_copy_header(skb) ||
+ (packet_length(skb) > skb->dev->mtu && !skb_is_gso(skb))) {
kfree_skb(skb);
- else {
- /* ip_fragment doesn't copy the MAC header */
- if (nf_bridge_maybe_copy_header(skb))
- kfree_skb(skb);
- else {
- skb_push(skb, ETH_HLEN);
- dev_queue_xmit(skb);
- }
+ } else {
+ skb_push(skb, ETH_HLEN);
+ dev_queue_xmit(skb);
}
return 0;