[3.16.y-ckt stable] Patch "ip6_tunnel: Use ip6_tnl_dev_init as the ndo_init function." has been added to staging queue

[Luis Henriques]

This is a note to let you know that I have just added a patch titled

    ip6_tunnel: Use ip6_tnl_dev_init as the ndo_init function.

to the linux-3.16.y-queue branch of the 3.16.y-ckt extended stable tree 
which can be found at:

 http://kernel.ubuntu.com/git?p=ubuntu/linux.git;a=shortlog;h=refs/heads/linux-3.16.y-queue

This patch is scheduled to be released in version 3.16.7-ckt2.

If you, or anyone else, feels it should not be added to this tree, please 
reply to this email.

For more information about the 3.16.y-ckt tree, see
https://wiki.ubuntu.com/Kernel/Dev/ExtendedStable

Thanks.
-Luis

------

>From f4e3960c7e05952d8ee9157289cd87d0d8320c4c Mon Sep 17 00:00:00 2001
From: Steffen Klassert <steffen.klassert at secunet.com>
Date: Mon, 3 Nov 2014 09:19:27 +0100
Subject: ip6_tunnel: Use ip6_tnl_dev_init as the ndo_init function.

commit 6c6151daaf2d8dc2046d9926539feed5f66bf74e upstream.

ip6_tnl_dev_init() sets the dev->iflink via a call to
ip6_tnl_link_config(). After that, register_netdevice()
sets dev->iflink = -1. So we loose the iflink configuration
for ipv6 tunnels. Fix this by using ip6_tnl_dev_init() as the
ndo_init function. Then ip6_tnl_dev_init() is called after
dev->iflink is set to -1 from register_netdevice().

Signed-off-by: Steffen Klassert <steffen.klassert at secunet.com>
Signed-off-by: David S. Miller <davem at davemloft.net>
Signed-off-by: Luis Henriques <luis.henriques at canonical.com>
---
 net/ipv6/ip6_tunnel.c | 10 +---------
 1 file changed, 1 insertion(+), 9 deletions(-)

diff --git a/net/ipv6/ip6_tunnel.c b/net/ipv6/ip6_tunnel.c
index afa082458360..9fd04fff7fea 100644
--- a/net/ipv6/ip6_tunnel.c
+++ b/net/ipv6/ip6_tunnel.c
@@ -272,9 +272,6 @@ static int ip6_tnl_create2(struct net_device *dev)
 	int err;

 	t = netdev_priv(dev);
-	err = ip6_tnl_dev_init(dev);
-	if (err < 0)
-		goto out;

 	err = register_netdevice(dev);
 	if (err < 0)
@@ -1456,6 +1453,7 @@ ip6_tnl_change_mtu(struct net_device *dev, int new_mtu)


 static const struct net_device_ops ip6_tnl_netdev_ops = {
+	.ndo_init	= ip6_tnl_dev_init,
 	.ndo_uninit	= ip6_tnl_dev_uninit,
 	.ndo_start_xmit = ip6_tnl_xmit,
 	.ndo_do_ioctl	= ip6_tnl_ioctl,
@@ -1540,16 +1538,10 @@ static int __net_init ip6_fb_tnl_dev_init(struct net_device *dev)
 	struct ip6_tnl *t = netdev_priv(dev);
 	struct net *net = dev_net(dev);
 	struct ip6_tnl_net *ip6n = net_generic(net, ip6_tnl_net_id);
-	int err = ip6_tnl_dev_init_gen(dev);
-
-	if (err)
-		return err;

 	t->parms.proto = IPPROTO_IPV6;
 	dev_hold(dev);

-	ip6_tnl_link_config(t);
-
 	rcu_assign_pointer(ip6n->tnls_wc[0], t);
 	return 0;
 }
--
2.1.0