/*
 * firewall_list.h
 */
#include<linux/slab.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <stdio.h>
#include <string.h>


#define NULL 0
#define NIPQUAD(addr) \
	((unsigned char *)&addr)[0], \
		((unsigned char *)&addr)[1], \
			((unsigned char *)&addr)[2], \
				((unsigned char *)&addr)[3]


struct gateway_list_node {
	unsigned int n;	
	struct gateway_list_node *next;
};

struct gateway_list_head {
	struct gateway_list_node *head;
	struct gateway_list_node *tail;
};

struct printable_buffer
{
	char *buff;
	int offset;
};

/*list manipulating functions here*/

struct gateway_list_node *create_node(void);

void init_list(struct gateway_list_head **iplh);

void add_to_list(struct gateway_list_head **iplh, struct gateway_list_node *ipln);

void remove_from_list(struct gateway_list_head **iplh, struct gateway_list_node *ipln);

void destroy_list(struct gateway_list_head **iplh);

int apply_function_to_list(struct gateway_list_head **iplh, 
				int (*func)(struct gateway_list_node *, void *), void *param);
int check_list_for_duplicates(struct gateway_list_head **iplh, 
				int (*func)(struct gateway_list_node *, void *), void *param);

int test_func(struct gateway_list_node *, void *);