ip_frag.h revision 266829 
1/*	$FreeBSD: stable/10/sys/contrib/ipfilter/netinet/ip_frag.h 266829 2014-05-29 02:55:07Z cy $	*/
2
3/*
4 * Copyright (C) 2012 by Darren Reed.
5 *
6 * See the IPFILTER.LICENCE file for details on licencing.
7 *
8 * @(#)ip_frag.h	1.5 3/24/96
9 * $FreeBSD: stable/10/sys/contrib/ipfilter/netinet/ip_frag.h 266829 2014-05-29 02:55:07Z cy $
10 * Id: ip_frag.h,v 2.23.2.1 2004/03/29 16:21:56 darrenr Exp
11 */
12
13#ifndef	__IP_FRAG_H__
14#define	__IP_FRAG_H__
15
16#define	IPFT_SIZE	257
17
18typedef	struct	ipfr	{
19	struct	ipfr	*ipfr_hnext, **ipfr_hprev;
20	struct	ipfr	*ipfr_next, **ipfr_prev;
21	void	*ipfr_data;
22	frentry_t *ipfr_rule;
23	u_long	ipfr_ttl;
24	u_int	ipfr_pkts;
25	u_int	ipfr_bytes;
26	u_int	ipfr_badorder;
27	int	ipfr_ref;
28	u_short	ipfr_off;
29	u_short	ipfr_firstend;
30	u_char	ipfr_p;
31	u_char	ipfr_seen0;
32	/*
33	 * All of the fields, from ipfr_ifp to ipfr_pass, are compared
34	 * using bcmp to see if an identical entry is present.  It is
35	 * therefore important for this set to remain together.
36	 */
37	void	*ipfr_ifp;
38	i6addr_t	ipfr_source;
39	i6addr_t	ipfr_dest;
40	u_32_t	ipfr_optmsk;
41	u_short	ipfr_secmsk;
42	u_short	ipfr_auth;
43	u_32_t	ipfr_id;
44	u_32_t	ipfr_pass;
45	int	ipfr_v;
46} ipfr_t;
47
48#define	ipfr_src	ipfr_source.in4
49#define	ipfr_dst	ipfr_dest.in4
50
51
52typedef	struct	ipfrstat {
53	u_long	ifs_exists;	/* add & already exists */
54	u_long	ifs_nomem;
55	u_long	ifs_new;
56	u_long	ifs_hits;
57	u_long	ifs_expire;
58	u_long	ifs_inuse;
59	u_long	ifs_retrans0;
60	u_long	ifs_short;
61	u_long	ifs_bad;
62	u_long	ifs_overlap;
63	u_long	ifs_unordered;
64	u_long	ifs_strict;
65	u_long	ifs_miss;
66	u_long	ifs_maximum;
67	u_long	ifs_newbad;
68	u_long	ifs_newrestrictnot0;
69	struct	ipfr	**ifs_table;
70	struct	ipfr	**ifs_nattab;
71} ipfrstat_t;
72
73typedef struct ipf_frag_softc_s  {
74	ipfrwlock_t	ipfr_ipidfrag;
75	ipfrwlock_t	ipfr_frag;
76	ipfrwlock_t	ipfr_natfrag;
77	int		ipfr_size;
78	int		ipfr_ttl;
79	int		ipfr_lock;
80	int		ipfr_inited;
81	ipfr_t		*ipfr_list;
82	ipfr_t		**ipfr_tail;
83	ipfr_t		*ipfr_natlist;
84	ipfr_t		**ipfr_nattail;
85	ipfr_t		*ipfr_ipidlist;
86	ipfr_t		**ipfr_ipidtail;
87	ipfr_t		**ipfr_heads;
88	ipfr_t		**ipfr_nattab;
89	ipfr_t		**ipfr_ipidtab;
90	ipfrstat_t	ipfr_stats;
91} ipf_frag_softc_t;
92
93#define	IPFR_CMPSZ	(offsetof(ipfr_t, ipfr_pass) - \
94			 offsetof(ipfr_t, ipfr_ifp))
95
96extern	void	*ipf_frag_soft_create __P((ipf_main_softc_t *));
97extern	int	ipf_frag_soft_init __P((ipf_main_softc_t *, void *));
98extern	int	ipf_frag_soft_fini __P((ipf_main_softc_t *, void *));
99extern	void	ipf_frag_soft_destroy __P((ipf_main_softc_t *, void *));
100extern	int	ipf_frag_main_load __P((void));
101extern	int	ipf_frag_main_unload __P((void));
102extern	int	ipf_frag_load __P((void));
103extern	void	ipf_frag_clear __P((ipf_main_softc_t *));
104extern	void	ipf_frag_expire __P((ipf_main_softc_t *));
105extern	void	ipf_frag_forget __P((void *));
106extern	int	ipf_frag_init __P((void));
107extern	u_32_t	ipf_frag_ipidknown __P((fr_info_t *));
108extern	int	ipf_frag_ipidnew __P((fr_info_t *, u_32_t));
109extern	frentry_t *ipf_frag_known __P((fr_info_t *, u_32_t *));
110extern	void	ipf_frag_natforget __P((ipf_main_softc_t *, void *));
111extern	int	ipf_frag_natnew __P((ipf_main_softc_t *, fr_info_t *, u_32_t, struct nat *));
112extern	nat_t	*ipf_frag_natknown __P((fr_info_t *));
113extern	int	ipf_frag_new __P((ipf_main_softc_t *, fr_info_t *, u_32_t));
114extern	ipfrstat_t	*ipf_frag_stats __P((void *));
115extern	void	ipf_frag_setlock __P((void *, int));
116extern	void	ipf_frag_pkt_deref __P((ipf_main_softc_t *, void *));
117extern	int	ipf_frag_pkt_next __P((ipf_main_softc_t *, ipftoken_t *,
118				       ipfgeniter_t *));
119extern	void	ipf_frag_nat_deref __P((ipf_main_softc_t *, void *));
120extern	int	ipf_frag_nat_next __P((ipf_main_softc_t *, ipftoken_t *,
121				       ipfgeniter_t *));
122extern	void	ipf_slowtimer __P((ipf_main_softc_t *));
123
124#endif	/* __IP_FRAG_H__ */
125