ip_frag.h revision 92685 
1/*
2 * Copyright (C) 1993-2001 by Darren Reed.
3 *
4 * See the IPFILTER.LICENCE file for details on licencing.
5 *
6 * @(#)ip_frag.h	1.5 3/24/96
7 * $Id: ip_frag.h,v 2.4.2.2 2000/11/10 13:10:54 darrenr Exp $
8 * $FreeBSD: head/sys/contrib/ipfilter/netinet/ip_frag.h 92685 2002-03-19 11:44:16Z darrenr $
9 */
10
11#ifndef	__IP_FRAG_H__
12#define	__IP_FRAG_H__
13
14#define	IPFT_SIZE	257
15
16typedef	struct	ipfr	{
17	struct	ipfr	*ipfr_next, *ipfr_prev;
18	void	*ipfr_data;
19	struct	in_addr	ipfr_src;
20	struct	in_addr	ipfr_dst;
21	void	*ipfr_ifp;
22	u_32_t	ipfr_optmsk;
23	u_short	ipfr_secmsk;
24	u_short	ipfr_auth;
25	u_short	ipfr_id;
26	u_char	ipfr_p;
27	u_char	ipfr_tos;
28	u_short	ipfr_off;
29	u_char	ipfr_ttl;
30	u_char	ipfr_seen0;
31	frentry_t *ipfr_rule;
32} ipfr_t;
33
34
35typedef	struct	ipfrstat {
36	u_long	ifs_exists;	/* add & already exists */
37	u_long	ifs_nomem;
38	u_long	ifs_new;
39	u_long	ifs_hits;
40	u_long	ifs_expire;
41	u_long	ifs_inuse;
42	struct	ipfr	**ifs_table;
43	struct	ipfr	**ifs_nattab;
44} ipfrstat_t;
45
46#define	IPFR_CMPSZ	(offsetof(ipfr_t, ipfr_off) - \
47			 offsetof(ipfr_t, ipfr_src))
48
49extern	int	fr_ipfrttl;
50extern	int	fr_frag_lock;
51extern	ipfrstat_t	*ipfr_fragstats __P((void));
52extern	int	ipfr_newfrag __P((ip_t *, fr_info_t *, u_int));
53extern	int	ipfr_nat_newfrag __P((ip_t *, fr_info_t *, u_int, struct nat *));
54extern	nat_t	*ipfr_nat_knownfrag __P((ip_t *, fr_info_t *));
55extern	frentry_t *ipfr_knownfrag __P((ip_t *, fr_info_t *));
56extern	void	ipfr_forget __P((void *));
57extern	void	ipfr_unload __P((void));
58extern	void	ipfr_fragexpire __P((void));
59
60#ifdef _KERNEL
61# if     (BSD >= 199306) || SOLARIS || defined(__sgi)
62#  if defined(SOLARIS2) && (SOLARIS2 < 7)
63extern	void	ipfr_slowtimer __P((void));
64#  else
65extern	void	ipfr_slowtimer __P((void *));
66#  endif
67# else
68extern	int	ipfr_slowtimer __P((void));
69# endif /* (BSD >= 199306) || SOLARIS */
70#else
71extern	void	ipfr_slowtimer __P((void));
72#endif /* _KERNEL */
73
74#endif	/* __IP_FIL_H__ */
75