--- /dev/null
+#ifndef _NF_INTERNALS_H
+#define _NF_INTERNALS_H
+
+#include <linux/list.h>
+#include <linux/skbuff.h>
+#include <linux/netdevice.h>
+
+#ifdef CONFIG_NETFILTER_DEBUG
+#define NFDEBUG(format, args...) printk(KERN_DEBUG format , ## args)
+#else
+#define NFDEBUG(format, args...)
+#endif
+
+
+/* core.c */
+unsigned int nf_iterate(struct list_head *head, struct sk_buff *skb,
+ struct nf_hook_state *state, struct nf_hook_ops **elemp);
+
+/* nf_queue.c */
+int nf_queue(struct sk_buff *skb, struct nf_hook_ops *elem,
+ struct nf_hook_state *state, unsigned int queuenum);
+int __init netfilter_queue_init(void);
+
+/* nf_log.c */
+int __init netfilter_log_init(void);
+
+#endif