3.16.7-ckt2 -stable review patch. If anyone has any objections, please let me know.
------------------
From: Steffen Klassert <steffen.klassert@xxxxxxxxxxx>
commit ebe084aafb7e93adf210e80043c9f69adf56820d upstream.
ipip6_tunnel_init() sets the dev->iflink via a call to
ipip6_tunnel_bind_dev(). After that, register_netdevice()
sets dev->iflink = -1. So we loose the iflink configuration
for ipv6 tunnels. Fix this by using ipip6_tunnel_init() as the
ndo_init function. Then ipip6_tunnel_init() is called after
dev->iflink is set to -1 from register_netdevice().
Signed-off-by: Steffen Klassert <steffen.klassert@xxxxxxxxxxx>
Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
Signed-off-by: Luis Henriques <luis.henriques@xxxxxxxxxxxxx>
---
net/ipv6/sit.c | 15 ++++++---------
1 file changed, 6 insertions(+), 9 deletions(-)
diff --git a/net/ipv6/sit.c b/net/ipv6/sit.c
index 9906535ce9de..051e9c508933 100644
--- a/net/ipv6/sit.c
+++ b/net/ipv6/sit.c
@@ -195,10 +195,8 @@ static int ipip6_tunnel_create(struct net_device *dev)
struct sit_net *sitn = net_generic(net, sit_net_id);
int err;
- err = ipip6_tunnel_init(dev);
- if (err < 0)
- goto out;
- ipip6_tunnel_clone_6rd(dev, sitn);
+ memcpy(dev->dev_addr, &t->parms.iph.saddr, 4);
+ memcpy(dev->broadcast, &t->parms.iph.daddr, 4);
if ((__force u16)t->parms.i_flags & SIT_ISATAP)
dev->priv_flags |= IFF_ISATAP;
@@ -207,7 +205,8 @@ static int ipip6_tunnel_create(struct net_device *dev)
if (err < 0)
goto out;
- strcpy(t->parms.name, dev->name);
+ ipip6_tunnel_clone_6rd(dev, sitn);
+
dev->rtnl_link_ops = &sit_link_ops;
dev_hold(dev);
@@ -1313,6 +1312,7 @@ static int ipip6_tunnel_change_mtu(struct net_device *dev, int new_mtu)
}
static const struct net_device_ops ipip6_netdev_ops = {
+ .ndo_init = ipip6_tunnel_init,
.ndo_uninit = ipip6_tunnel_uninit,
.ndo_start_xmit = sit_tunnel_xmit,
.ndo_do_ioctl = ipip6_tunnel_ioctl,
@@ -1358,9 +1358,7 @@ static int ipip6_tunnel_init(struct net_device *dev)
tunnel->dev = dev;
tunnel->net = dev_net(dev);
-
- memcpy(dev->dev_addr, &tunnel->parms.iph.saddr, 4);
- memcpy(dev->broadcast, &tunnel->parms.iph.daddr, 4);
+ strcpy(tunnel->parms.name, dev->name);
ipip6_tunnel_bind_dev(dev);
dev->tstats = netdev_alloc_pcpu_stats(struct pcpu_sw_netstats);
@@ -1385,7 +1383,6 @@ static int __net_init ipip6_fb_tunnel_init(struct net_device *dev)
tunnel->dev = dev;
tunnel->net = dev_net(dev);
- strcpy(tunnel->parms.name, dev->name);
iph->version = 4;
iph->protocol = IPPROTO_IPV6;
--
2.1.0
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