#ifdef __KERNEL__
#include <linux/list.h>
-#include <linux/netfilter_ipv4/lockhelp.h>
/* Protects NAT hash tables, and NAT-private part of conntracks. */
-DECLARE_RWLOCK_EXTERN(ip_nat_lock);
+extern rwlock_t ip_nat_lock;
/* The structure embedded in the conntrack structure. */
struct ip_nat_info