Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6

Conflicts:
	drivers/net/tokenring/tmspci.c
	drivers/net/ucc_geth_mii.c

2 files changed, 33 insertions, 41 deletions

diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c
index f8f76d6..e83852a 100644
--- a/net/ipv6/addrconf.c
+++ b/net/ipv6/addrconf.c
@@ -493,15 +493,17 @@ static void addrconf_forward_change(struct net *net, __s32 newf)
 	read_unlock(&dev_base_lock);
 }
 
-static void addrconf_fixup_forwarding(struct ctl_table *table, int *p, int old)
+static int addrconf_fixup_forwarding(struct ctl_table *table, int *p, int old)
 {
 	struct net *net;
 
 	net = (struct net *)table->extra2;
 	if (p == &net->ipv6.devconf_dflt->forwarding)
-		return;
+		return 0;
+
+	if (!rtnl_trylock())
+		return -ERESTARTSYS;
 
-	rtnl_lock();
 	if (p == &net->ipv6.devconf_all->forwarding) {
 		__s32 newf = net->ipv6.devconf_all->forwarding;
 		net->ipv6.devconf_dflt->forwarding = newf;
@@ -512,6 +514,7 @@ static void addrconf_fixup_forwarding(struct ctl_table *table, int *p, int old)
 
 	if (*p)
 		rt6_purge_dflt_routers(net);
+	return 1;
 }
 #endif
 
@@ -2599,9 +2602,6 @@ static int addrconf_ifdown(struct net_device *dev, int how)
 
 	ASSERT_RTNL();
 
-	if ((dev->flags & IFF_LOOPBACK) && how == 1)
-		how = 0;
-
 	rt6_ifdown(net, dev);
 	neigh_ifdown(&nd_tbl, dev);
 
@@ -3977,7 +3977,7 @@ int addrconf_sysctl_forward(ctl_table *ctl, int write, struct file * filp,
 	ret = proc_dointvec(ctl, write, filp, buffer, lenp, ppos);
 
 	if (write)
-		addrconf_fixup_forwarding(ctl, valp, val);
+		ret = addrconf_fixup_forwarding(ctl, valp, val);
 	return ret;
 }
 
@@ -4013,8 +4013,7 @@ static int addrconf_sysctl_forward_strategy(ctl_table *table,
 	}
 
 	*valp = new;
-	addrconf_fixup_forwarding(table, valp, val);
-	return 1;
+	return addrconf_fixup_forwarding(table, valp, val);
 }
 
 static struct addrconf_sysctl_table
@@ -4440,25 +4439,6 @@ int unregister_inet6addr_notifier(struct notifier_block *nb)
 
 EXPORT_SYMBOL(unregister_inet6addr_notifier);
 
-static void addrconf_net_exit(struct net *net)
-{
-	struct net_device *dev;
-
-	rtnl_lock();
-	/* clean dev list */
-	for_each_netdev(net, dev) {
-		if (__in6_dev_get(dev) == NULL)
-			continue;
-		addrconf_ifdown(dev, 1);
-	}
-	addrconf_ifdown(net->loopback_dev, 2);
-	rtnl_unlock();
-}
-
-static struct pernet_operations addrconf_net_ops = {
-	.exit = addrconf_net_exit,
-};
-
 /*
  *	Init / cleanup code
  */
@@ -4500,10 +4480,6 @@ int __init addrconf_init(void)
 	if (err)
 		goto errlo;
 
-	err = register_pernet_device(&addrconf_net_ops);
-	if (err)
-		return err;
-
 	register_netdevice_notifier(&ipv6_dev_notf);
 
 	addrconf_verify(0);
@@ -4533,15 +4509,22 @@ errlo:
 void addrconf_cleanup(void)
 {
 	struct inet6_ifaddr *ifa;
+	struct net_device *dev;
 	int i;
 
 	unregister_netdevice_notifier(&ipv6_dev_notf);
-	unregister_pernet_device(&addrconf_net_ops);
-
 	unregister_pernet_subsys(&addrconf_ops);
 
 	rtnl_lock();
 
+	/* clean dev list */
+	for_each_netdev(&init_net, dev) {
+		if (__in6_dev_get(dev) == NULL)
+			continue;
+		addrconf_ifdown(dev, 1);
+	}
+	addrconf_ifdown(init_net.loopback_dev, 2);
+
 	/*
 	 *	Check hash table.
 	 */
@@ -4562,6 +4545,4 @@ void addrconf_cleanup(void)
 
 	del_timer(&addr_chk_timer);
 	rtnl_unlock();
-
-	unregister_pernet_subsys(&addrconf_net_ops);
 }
diff --git a/net/ipv6/af_inet6.c b/net/ipv6/af_inet6.c
index fa2ac7e..57b07da 100644
--- a/net/ipv6/af_inet6.c
+++ b/net/ipv6/af_inet6.c
@@ -72,6 +72,10 @@ MODULE_LICENSE("GPL");
 static struct list_head inetsw6[SOCK_MAX];
 static DEFINE_SPINLOCK(inetsw6_lock);
 
+static int disable_ipv6 = 0;
+module_param_named(disable, disable_ipv6, int, 0);
+MODULE_PARM_DESC(disable, "Disable IPv6 such that it is non-functional");
+
 static __inline__ struct ipv6_pinfo *inet6_sk_generic(struct sock *sk)
 {
 	const int offset = sk->sk_prot->obj_size - sizeof(struct ipv6_pinfo);
@@ -1001,10 +1005,21 @@ static int __init inet6_init(void)
 {
 	struct sk_buff *dummy_skb;
 	struct list_head *r;
-	int err;
+	int err = 0;
 
 	BUILD_BUG_ON(sizeof(struct inet6_skb_parm) > sizeof(dummy_skb->cb));
 
+	/* Register the socket-side information for inet6_create.  */
+	for(r = &inetsw6[0]; r < &inetsw6[SOCK_MAX]; ++r)
+		INIT_LIST_HEAD(r);
+
+	if (disable_ipv6) {
+		printk(KERN_INFO
+		       "IPv6: Loaded, but administratively disabled, "
+		       "reboot required to enable\n");
+		goto out;
+	}
+
 	err = proto_register(&tcpv6_prot, 1);
 	if (err)
 		goto out;
@@ -1022,10 +1037,6 @@ static int __init inet6_init(void)
 		goto out_unregister_udplite_proto;
 
 
-	/* Register the socket-side information for inet6_create.  */
-	for(r = &inetsw6[0]; r < &inetsw6[SOCK_MAX]; ++r)
-		INIT_LIST_HEAD(r);
-
 	/* We MUST register RAW sockets before we create the ICMP6,
 	 * IGMP6, or NDISC control sockets.
 	 */