Tell upper layer protocols to allocate skb with additional headroom.
This avoids allocation and copy in local packet sends.
Signed-off-by: Stephen Hemminger <redacted>
--- a/drivers/net/vxlan.c 2012-10-09 18:08:35.086431755 -0700
+++ b/drivers/net/vxlan.c 2012-10-09 18:08:36.862414133 -0700
@@ -983,6 +983,7 @@ static void vxlan_setup(struct net_devic
eth_hw_addr_random(dev);
ether_setup(dev);
+ dev->hard_header_len = ETH_HLEN + VXLAN_HEADROOM;
dev->netdev_ops = &vxlan_netdev_ops;
dev->destructor = vxlan_free;