net: Convert nf_conntrack_proto to use register_net_sysctl

There isn't much advantage here except that strings paths are a bit
easier to read, and converting everything to them allows me to kill off
ctl_path.
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>

include/net/netfilter/nf_conntrack_l3proto.h

@@ -65,7 +65,7 @@ struct nf_conntrack_l3proto {
 
 #ifdef CONFIG_SYSCTL
 	struct ctl_table_header	*ctl_table_header;
-	struct ctl_path		*ctl_table_path;
+	const char		*ctl_table_path;
 	struct ctl_table	*ctl_table;
 #endif /* CONFIG_SYSCTL */
 

net/ipv4/netfilter/nf_conntrack_l3proto_ipv4.c

@@ -365,7 +365,7 @@ struct nf_conntrack_l3proto nf_conntrack_l3proto_ipv4 __read_mostly = {
 	.nla_policy	 = ipv4_nla_policy,
 #endif
 #if defined(CONFIG_SYSCTL) && defined(CONFIG_NF_CONNTRACK_PROC_COMPAT)
-	.ctl_table_path  = nf_net_ipv4_netfilter_sysctl_path,
+	.ctl_table_path  = "net/ipv4/netfilter",
 	.ctl_table	 = ip_ct_sysctl_table,
 #endif
 	.me		 = THIS_MODULE,

net/netfilter/nf_conntrack_proto.c

@@ -36,11 +36,11 @@ static DEFINE_MUTEX(nf_ct_proto_mutex);
 
 #ifdef CONFIG_SYSCTL
 static int
-nf_ct_register_sysctl(struct ctl_table_header **header, struct ctl_path *path,
+nf_ct_register_sysctl(struct ctl_table_header **header, const char *path,
 		      struct ctl_table *table, unsigned int *users)
 {
 	if (*header == NULL) {
-		*header = register_net_sysctl_table(&init_net, path, table);
+		*header = register_net_sysctl(&init_net, path, table);
 		if (*header == NULL)
 			return -ENOMEM;
 	}
@@ -250,7 +250,7 @@ static int nf_ct_l4proto_register_sysctl(struct nf_conntrack_l4proto *l4proto)
 #ifdef CONFIG_SYSCTL
 	if (l4proto->ctl_table != NULL) {
 		err = nf_ct_register_sysctl(l4proto->ctl_table_header,
-					    nf_net_netfilter_sysctl_path,
+					    "net/netfilter",
 					    l4proto->ctl_table,
 					    l4proto->ctl_table_users);
 		if (err < 0)
@@ -259,7 +259,7 @@ static int nf_ct_l4proto_register_sysctl(struct nf_conntrack_l4proto *l4proto)
 #ifdef CONFIG_NF_CONNTRACK_PROC_COMPAT
 	if (l4proto->ctl_compat_table != NULL) {
 		err = nf_ct_register_sysctl(&l4proto->ctl_compat_table_header,
-					    nf_net_ipv4_netfilter_sysctl_path,
+					    "net/ipv4/netfilter",
 					    l4proto->ctl_compat_table, NULL);
 		if (err == 0)
 			goto out;