#ifdef __KERNEL__
extern int ip_route_me_harder(struct sk_buff **pskb);
-
+extern int ip_xfrm_me_harder(struct sk_buff **pskb);
+extern unsigned int nf_ip_checksum(struct sk_buff *skb, unsigned int hook,
+ unsigned int dataoff, u_int8_t protocol);
#endif /*__KERNEL__*/
#endif /*__LINUX_IP_NETFILTER_H*/