net: Move all of the network sysctls without a namespace into init_net.

This makes it clearer which sysctls are relative to your current network
namespace.

This makes it a little less error prone by not exposing sysctls for the
initial network namespace in other namespaces.

This is the same way we handle all of our other network interfaces to
userspace and I can't honestly remember why we didn't do this for
sysctls right from the start.

Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
Acked-by: Pavel Emelyanov <xemul@parallels.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/ipv4/netfilter/ip_queue.c b/net/ipv4/netfilter/ip_queue.c
index 94d45e1..766485d 100644
--- a/net/ipv4/netfilter/ip_queue.c
+++ b/net/ipv4/netfilter/ip_queue.c
@@ -586,7 +586,7 @@
 #endif
 	register_netdevice_notifier(&ipq_dev_notifier);
 #ifdef CONFIG_SYSCTL
-	ipq_sysctl_header = register_sysctl_paths(net_ipv4_ctl_path, ipq_table);
+	ipq_sysctl_header = register_net_sysctl_table(&init_net, net_ipv4_ctl_path, ipq_table);
 #endif
 	status = nf_register_queue_handler(NFPROTO_IPV4, &nfqh);
 	if (status < 0) {
@@ -597,7 +597,7 @@
 
 cleanup_sysctl:
 #ifdef CONFIG_SYSCTL
-	unregister_sysctl_table(ipq_sysctl_header);
+	unregister_net_sysctl_table(ipq_sysctl_header);
 #endif
 	unregister_netdevice_notifier(&ipq_dev_notifier);
 	proc_net_remove(&init_net, IPQ_PROC_FS_NAME);
@@ -618,7 +618,7 @@
 	ipq_flush(NULL, 0);
 
 #ifdef CONFIG_SYSCTL
-	unregister_sysctl_table(ipq_sysctl_header);
+	unregister_net_sysctl_table(ipq_sysctl_header);
 #endif
 	unregister_netdevice_notifier(&ipq_dev_notifier);
 	proc_net_remove(&init_net, IPQ_PROC_FS_NAME);
diff --git a/net/ipv4/route.c b/net/ipv4/route.c
index a1c115d..86866a4 100644
--- a/net/ipv4/route.c
+++ b/net/ipv4/route.c
@@ -3515,6 +3515,6 @@
  */
 void __init ip_static_sysctl_init(void)
 {
-	kmemleak_not_leak(register_sysctl_paths(ipv4_path, ipv4_skeleton));
+	kmemleak_not_leak(register_net_sysctl_table(&init_net, ipv4_path, ipv4_skeleton));
 }
 #endif
diff --git a/net/ipv4/sysctl_net_ipv4.c b/net/ipv4/sysctl_net_ipv4.c
index 34a6286..e7a6fa3 100644
--- a/net/ipv4/sysctl_net_ipv4.c
+++ b/net/ipv4/sysctl_net_ipv4.c
@@ -857,12 +857,12 @@
 	if (!i->procname)
 		return -EINVAL;
 
-	hdr = register_sysctl_paths(net_ipv4_ctl_path, ipv4_table);
+	hdr = register_net_sysctl_table(&init_net, net_ipv4_ctl_path, ipv4_table);
 	if (hdr == NULL)
 		return -ENOMEM;
 
 	if (register_pernet_subsys(&ipv4_sysctl_ops)) {
-		unregister_sysctl_table(hdr);
+		unregister_net_sysctl_table(hdr);
 		return -ENOMEM;
 	}