vxlan: add additional headroom

Tell upper layer protocols to allocate skb with additional headroom.
This avoids allocation and copy in local packet sends.

Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 1 insertions, 0 deletions

diff --git a/drivers/net/vxlan.c b/drivers/net/vxlan.c
index 4be2784e7ac2..0b95d5fffce7 100644
--- a/drivers/net/vxlan.c
+++ b/drivers/net/vxlan.c
@@ -983,6 +983,7 @@ static void vxlan_setup(struct net_device *dev)
 
         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;