[NETFILTER]: nf_conntrack: automatic sysctl registation for conntrack protocols
Add helper functions for sysctl registration with optional instantiating
of common path elements (like net/netfilter) and use it for support for
automatic registation of conntrack protocol sysctls.
Signed-off-by: Patrick McHardy <kaber@trash.net>
diff --git a/include/linux/netfilter.h b/include/linux/netfilter.h
index 6ab5e2d..f6f3fcb 100644
--- a/include/linux/netfilter.h
+++ b/include/linux/netfilter.h
@@ -117,6 +117,16 @@
int nf_register_sockopt(struct nf_sockopt_ops *reg);
void nf_unregister_sockopt(struct nf_sockopt_ops *reg);
+#ifdef CONFIG_SYSCTL
+/* Sysctl registration */
+struct ctl_table_header *nf_register_sysctl_table(struct ctl_table *path,
+ struct ctl_table *table);
+void nf_unregister_sysctl_table(struct ctl_table_header *header,
+ struct ctl_table *table);
+extern struct ctl_table nf_net_netfilter_sysctl_path[];
+extern struct ctl_table nf_net_ipv4_netfilter_sysctl_path[];
+#endif /* CONFIG_SYSCTL */
+
extern struct list_head nf_hooks[NPROTO][NF_MAX_HOOKS];
/* those NF_LOG_* defines and struct nf_loginfo are legacy definitios that will