net: Convert all sysctl registrations to register_net_sysctl

This results in code with less boiler plate that is a bit easier
to read.

Additionally stops us from using compatibility code in the sysctl
core, hastening the day when the compatibility code can be removed.

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/sysctl_net_ipv4.c b/net/ipv4/sysctl_net_ipv4.c
index e7a6fa3..56e64f7 100644
--- a/net/ipv4/sysctl_net_ipv4.c
+++ b/net/ipv4/sysctl_net_ipv4.c
@@ -815,8 +815,7 @@
 
 	tcp_init_mem(net);
 
-	net->ipv4.ipv4_hdr = register_net_sysctl_table(net,
-			net_ipv4_ctl_path, table);
+	net->ipv4.ipv4_hdr = register_net_sysctl(net, "net/ipv4", table);
 	if (net->ipv4.ipv4_hdr == NULL)
 		goto err_reg;
 
@@ -857,7 +856,7 @@
 	if (!i->procname)
 		return -EINVAL;
 
-	hdr = register_net_sysctl_table(&init_net, net_ipv4_ctl_path, ipv4_table);
+	hdr = register_net_sysctl(&init_net, "net/ipv4", ipv4_table);
 	if (hdr == NULL)
 		return -ENOMEM;