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      1 /*	$NetBSD: ip_frag.h,v 1.3 2012/07/22 14:27:51 darrenr Exp $	*/
      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  * Id: ip_frag.h,v 1.1.1.2 2012/07/22 13:45:17 darrenr Exp
     10  */
     11 
     12 #ifndef _NETINET_IP_FRAG_H_
     13 #define _NETINET_IP_FRAG_H_
     14 
     15 #define	IPFT_SIZE	257
     16 
     17 typedef	struct	ipfr	{
     18 	struct	ipfr	*ipfr_hnext, **ipfr_hprev;
     19 	struct	ipfr	*ipfr_next, **ipfr_prev;
     20 	void	*ipfr_data;
     21 	frentry_t *ipfr_rule;
     22 	u_long	ipfr_ttl;
     23 	u_int	ipfr_pkts;
     24 	u_int	ipfr_bytes;
     25 	u_int	ipfr_badorder;
     26 	int	ipfr_ref;
     27 	u_short	ipfr_off;
     28 	u_short	ipfr_firstend;
     29 	u_char	ipfr_p;
     30 	u_char	ipfr_seen0;
     31 	/*
     32 	 * All of the fields, from ipfr_ifp to ipfr_pass, are compared
     33 	 * using bcmp to see if an identical entry is present.  It is
     34 	 * therefore important for this set to remain together.
     35 	 */
     36 	void	*ipfr_ifp;
     37 	i6addr_t	ipfr_source;
     38 	i6addr_t	ipfr_dest;
     39 	u_32_t	ipfr_optmsk;
     40 	u_short	ipfr_secmsk;
     41 	u_short	ipfr_auth;
     42 	u_32_t	ipfr_id;
     43 	u_32_t	ipfr_pass;
     44 	int	ipfr_v;
     45 } ipfr_t;
     46 
     47 #define	ipfr_src	ipfr_source.in4
     48 #define	ipfr_dst	ipfr_dest.in4
     49 
     50 
     51 typedef	struct	ipfrstat {
     52 	u_long	ifs_exists;	/* add & already exists */
     53 	u_long	ifs_nomem;
     54 	u_long	ifs_new;
     55 	u_long	ifs_hits;
     56 	u_long	ifs_expire;
     57 	u_long	ifs_inuse;
     58 	u_long	ifs_retrans0;
     59 	u_long	ifs_short;
     60 	u_long	ifs_bad;
     61 	u_long	ifs_overlap;
     62 	u_long	ifs_unordered;
     63 	u_long	ifs_strict;
     64 	u_long	ifs_miss;
     65 	u_long	ifs_maximum;
     66 	u_long	ifs_newbad;
     67 	u_long	ifs_newrestrictnot0;
     68 	struct	ipfr	**ifs_table;
     69 	struct	ipfr	**ifs_nattab;
     70 } ipfrstat_t;
     71 
     72 #define	IPFR_CMPSZ	(offsetof(ipfr_t, ipfr_pass) - \
     73 			 offsetof(ipfr_t, ipfr_ifp))
     74 
     75 extern	void	*ipf_frag_soft_create(ipf_main_softc_t *);
     76 extern	int	ipf_frag_soft_init(ipf_main_softc_t *, void *);
     77 extern	int	ipf_frag_soft_fini(ipf_main_softc_t *, void *);
     78 extern	void	ipf_frag_soft_destroy(ipf_main_softc_t *, void *);
     79 extern	int	ipf_frag_main_load(void);
     80 extern	int	ipf_frag_main_unload(void);
     81 extern	int	ipf_frag_load(void);
     82 extern	void	ipf_frag_clear(ipf_main_softc_t *);
     83 extern	void	ipf_frag_expire(ipf_main_softc_t *);
     84 extern	void	ipf_frag_forget(void *);
     85 extern	int	ipf_frag_init(void);
     86 extern	u_32_t	ipf_frag_ipidknown(fr_info_t *);
     87 extern	int	ipf_frag_ipidnew(fr_info_t *, u_32_t);
     88 extern	frentry_t *ipf_frag_known(fr_info_t *, u_32_t *);
     89 extern	void	ipf_frag_natforget(ipf_main_softc_t *, void *);
     90 extern	int	ipf_frag_natnew(ipf_main_softc_t *, fr_info_t *, u_32_t, struct nat *);
     91 extern	nat_t	*ipf_frag_natknown(fr_info_t *);
     92 extern	int	ipf_frag_new(ipf_main_softc_t *, fr_info_t *, u_32_t);
     93 extern	ipfrstat_t	*ipf_frag_stats(void *);
     94 extern	void	ipf_frag_setlock(void *, int);
     95 extern	void	ipf_frag_pkt_deref(ipf_main_softc_t *, void *);
     96 extern	int	ipf_frag_pkt_next(ipf_main_softc_t *, ipftoken_t *,
     97 				       ipfgeniter_t *);
     98 extern	void	ipf_frag_nat_deref(ipf_main_softc_t *, void *);
     99 extern	int	ipf_frag_nat_next(ipf_main_softc_t *, ipftoken_t *,
    100 				       ipfgeniter_t *);
    101 extern	void	ipf_slowtimer(ipf_main_softc_t *);
    102 
    103 #endif /* _NETINET_IP_FRAG_H_ */
    104