From 79ecb90e65f33d1941ac1f8e43eec34ec3bdbad8 Mon Sep 17 00:00:00 2001
From: Tom Herbert <tom@herbertland.com>
Date: Fri, 29 Apr 2016 17:12:20 -0700
Subject: ipv6: Generic tunnel cleanup
A few generic changes to generalize tunnels in IPv6:
- Export ip6_tnl_change_mtu so that it can be called by ip6_gre
- Add tun_hlen to ip6_tnl structure.
Signed-off-by: Tom Herbert <tom@herbertland.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
net/ipv6/ip6_tunnel.c | 7 +++++--
1 file changed, 5 insertions(+), 2 deletions(-)
(limited to 'net')
diff --git a/net/ipv6/ip6_tunnel.c b/net/ipv6/ip6_tunnel.c
index b1f31d2b17cd..ade55af6ace6 100644
--- a/net/ipv6/ip6_tunnel.c
+++ b/net/ipv6/ip6_tunnel.c
@@ -1540,8 +1540,7 @@ ip6_tnl_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
* %-EINVAL if mtu too small
**/
-static int
-ip6_tnl_change_mtu(struct net_device *dev, int new_mtu)
+int ip6_tnl_change_mtu(struct net_device *dev, int new_mtu)
{
struct ip6_tnl *tnl = netdev_priv(dev);
@@ -1557,6 +1556,7 @@ ip6_tnl_change_mtu(struct net_device *dev, int new_mtu)
dev->mtu = new_mtu;
return 0;
}
+EXPORT_SYMBOL(ip6_tnl_change_mtu);
int ip6_tnl_get_iflink(const struct net_device *dev)
{
@@ -1632,6 +1632,9 @@ ip6_tnl_dev_init_gen(struct net_device *dev)
if (ret)
goto destroy_dst;
+ t->hlen = 0;
+ t->tun_hlen = 0;
+
return 0;
destroy_dst:
--
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