ip_frag.h revision 369245 
1/*	$FreeBSD: stable/11/sys/contrib/ipfilter/netinet/ip_frag.h 369245 2021-02-09 13:47:46Z git2svn $	*/
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/11/sys/contrib/ipfilter/netinet/ip_frag.h 369245 2021-02-09 13:47:46Z git2svn $
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	ipftuneable_t	*ipf_frag_tune;
82	ipfr_t		*ipfr_list;
83	ipfr_t		**ipfr_tail;
84	ipfr_t		*ipfr_natlist;
85	ipfr_t		**ipfr_nattail;
86	ipfr_t		*ipfr_ipidlist;
87	ipfr_t		**ipfr_ipidtail;
88	ipfr_t		**ipfr_heads;
89	ipfr_t		**ipfr_nattab;
90	ipfr_t		**ipfr_ipidtab;
91	ipfrstat_t	ipfr_stats;
92} ipf_frag_softc_t;
93
94#define	IPFR_CMPSZ	(offsetof(ipfr_t, ipfr_pass) - \
95			 offsetof(ipfr_t, ipfr_ifp))
96
97extern	void	*ipf_frag_soft_create(ipf_main_softc_t *);
98extern	int	ipf_frag_soft_init(ipf_main_softc_t *, void *);
99extern	int	ipf_frag_soft_fini(ipf_main_softc_t *, void *);
100extern	void	ipf_frag_soft_destroy(ipf_main_softc_t *, void *);
101extern	int	ipf_frag_main_load(void);
102extern	int	ipf_frag_main_unload(void);
103extern	int	ipf_frag_load(void);
104extern	void	ipf_frag_clear(ipf_main_softc_t *);
105extern	void	ipf_frag_expire(ipf_main_softc_t *);
106extern	void	ipf_frag_forget(void *);
107extern	int	ipf_frag_init(void);
108extern	u_32_t	ipf_frag_ipidknown(fr_info_t *);
109extern	int	ipf_frag_ipidnew(fr_info_t *, u_32_t);
110extern	frentry_t *ipf_frag_known(fr_info_t *, u_32_t *);
111extern	void	ipf_frag_natforget(ipf_main_softc_t *, void *);
112extern	int	ipf_frag_natnew(ipf_main_softc_t *, fr_info_t *, u_32_t, struct nat *);
113extern	nat_t	*ipf_frag_natknown(fr_info_t *);
114extern	int	ipf_frag_new(ipf_main_softc_t *, fr_info_t *, u_32_t);
115extern	ipfrstat_t	*ipf_frag_stats(void *);
116extern	void	ipf_frag_setlock(void *, int);
117extern	void	ipf_frag_pkt_deref(ipf_main_softc_t *, void *);
118extern	int	ipf_frag_pkt_next(ipf_main_softc_t *, ipftoken_t *,
119				       ipfgeniter_t *);
120extern	void	ipf_frag_nat_deref(ipf_main_softc_t *, void *);
121extern	int	ipf_frag_nat_next(ipf_main_softc_t *, ipftoken_t *,
122				       ipfgeniter_t *);
123extern	void	ipf_slowtimer(ipf_main_softc_t *);
124
125#endif	/* __IP_FRAG_H__ */
126