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 2.22 2003/06/24 11:13:53 darrenr Exp $
8  *
9  * Copyright 2005 Sun Microsystems, Inc.  All rights reserved.
10  * Use is subject to license terms.
11  */
12 
13 #pragma ident	"%Z%%M%	%I%	%E% SMI"
14 
15 #ifndef	__IP_FRAG_H__
16 #define	__IP_FRAG_H__
17 
18 #define	IPFT_SIZE	257
19 
20 typedef	struct	ipfr	{
21 	struct	ipfr	*ipfr_hnext, **ipfr_hprev;
22 	struct	ipfr	*ipfr_next, **ipfr_prev;
23 	void	*ipfr_data;
24 	void	*ipfr_ifp;
25 	i6addr_t	ipfr_source;
26 	i6addr_t	ipfr_dest;
27 	u_32_t	ipfr_optmsk;
28 	u_short	ipfr_secmsk;
29 	u_short	ipfr_auth;
30 	u_32_t	ipfr_id;
31 	u_char	ipfr_p;
32 	u_char	ipfr_tos;
33 	u_32_t	ipfr_pass;
34 	u_short	ipfr_off;
35 	u_char	ipfr_ttl;
36 	u_char	ipfr_seen0;
37 	u_short ipfr_firstend;
38 	frentry_t *ipfr_rule;
39 } ipfr_t;
40 
41 #define	ipfr_src	ipfr_source.in4
42 #define	ipfr_dst	ipfr_dest.in4
43 
44 typedef	struct	ipfrstat {
45 	u_long	ifs_exists;	/* add & already exists */
46 	u_long	ifs_nomem;
47 	u_long	ifs_new;
48 	u_long	ifs_hits;
49 	u_long	ifs_expire;
50 	u_long	ifs_inuse;
51 	u_long	ifs_retrans0;
52 	u_long	ifs_short;
53 	struct	ipfr	**ifs_table;
54 	struct	ipfr	**ifs_nattab;
55 } ipfrstat_t;
56 
57 #define	IPFR_CMPSZ	(offsetof(ipfr_t, ipfr_tos) - \
58 			 offsetof(ipfr_t, ipfr_ifp))
59 
60 extern	int	ipfr_size;
61 extern	int	fr_ipfrttl;
62 extern	int	fr_frag_lock;
63 extern	int	fr_fraginit __P((void));
64 extern	void	fr_fragunload __P((void));
65 extern	ipfrstat_t	*fr_fragstats __P((void));
66 
67 extern	int	fr_newfrag __P((fr_info_t *, u_32_t));
68 extern	frentry_t *fr_knownfrag __P((fr_info_t *, u_32_t *));
69 
70 extern	int	fr_nat_newfrag __P((fr_info_t *, u_32_t, struct nat *));
71 extern	nat_t	*fr_nat_knownfrag __P((fr_info_t *));
72 
73 extern	int	fr_ipid_newfrag __P((fr_info_t *, u_32_t));
74 extern	u_32_t	fr_ipid_knownfrag __P((fr_info_t *));
75 
76 extern	void	fr_forget __P((void *));
77 extern	void	fr_forgetnat __P((void *));
78 extern	void	fr_fragclear __P((void));
79 extern	void	fr_fragexpire __P((void));
80 
81 #if     defined(_KERNEL) && ((BSD >= 199306) || SOLARIS || defined(__sgi) \
82 	        || defined(__osf__) || (defined(__sgi) && (IRIX >= 605)))
83 # if defined(SOLARIS2) && (SOLARIS2 < 7)
84 extern	void	fr_slowtimer __P((void));
85 # else
86 #ifndef _KERNEL
87 extern	void	fr_slowtimer __P((void *));
88 #endif
89 # endif
90 #else
91 extern	int	fr_slowtimer __P((void));
92 #endif
93 
94 #endif	/* __IP_FRAG_H__ */
95