From: stephen hemminger <shemminger@vyatta.com>
Date: Tue, 9 Oct 2012 20:35:51 +0000 (+0000)
Subject: vxlan: add additional headroom
X-Git-Tag: v3.7-rc1~25^2~19
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=2840bf22866935fe7197582bcbe2cde4503e0bba;p=platform%2Fkernel%2Flinux-3.10.git

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>
---

diff --git a/drivers/net/vxlan.c b/drivers/net/vxlan.c
index 4be2784..0b95d5f 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;