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/* $FreeBSD: release/9.1.0/sys/contrib/ipfilter/netinet/ip_frag.h 170268 2007-06-04 02:54:36Z darrenr $ */
/*
* Copyright (C) 1993-2001 by Darren Reed.
*
* See the IPFILTER.LICENCE file for details on licencing.
*
* @(#)ip_frag.h 1.5 3/24/96
* $FreeBSD: release/9.1.0/sys/contrib/ipfilter/netinet/ip_frag.h 170268 2007-06-04 02:54:36Z darrenr $
* Id: ip_frag.h,v 2.23.2.1 2004/03/29 16:21:56 darrenr Exp
*/
#ifndef __IP_FRAG_H__
#define __IP_FRAG_H__
#define IPFT_SIZE 257
typedef struct ipfr {
struct ipfr *ipfr_hnext, **ipfr_hprev;
struct ipfr *ipfr_next, **ipfr_prev;
void *ipfr_data;
frentry_t *ipfr_rule;
u_long ipfr_ttl;
int ipfr_ref;
u_short ipfr_off;
u_short ipfr_seen0;
/*
* All of the fields, from ipfr_ifp to ipfr_pass, are compared
* using bcmp to see if an identical entry is present. It is
* therefore important for this set to remain together.
*/
void *ipfr_ifp;
struct in_addr ipfr_src;
struct in_addr ipfr_dst;
u_32_t ipfr_optmsk;
u_short ipfr_secmsk;
u_short ipfr_auth;
u_short ipfr_id;
u_char ipfr_p;
u_char ipfr_tos;
u_32_t ipfr_pass;
} ipfr_t;
typedef struct ipfrstat {
u_long ifs_exists; /* add & already exists */
u_long ifs_nomem;
u_long ifs_new;
u_long ifs_hits;
u_long ifs_expire;
u_long ifs_inuse;
u_long ifs_retrans0;
u_long ifs_short;
struct ipfr **ifs_table;
struct ipfr **ifs_nattab;
} ipfrstat_t;
#define IPFR_CMPSZ (offsetof(ipfr_t, ipfr_pass) - \
offsetof(ipfr_t, ipfr_ifp))
extern ipfr_t *ipfr_list, **ipfr_tail;
extern ipfr_t *ipfr_natlist, **ipfr_nattail;
extern int ipfr_size;
extern int fr_ipfrttl;
extern int fr_frag_lock;
extern int fr_fraginit __P((void));
extern void fr_fragunload __P((void));
extern ipfrstat_t *fr_fragstats __P((void));
extern int fr_newfrag __P((fr_info_t *, u_32_t));
extern frentry_t *fr_knownfrag __P((fr_info_t *, u_32_t *));
extern int fr_nat_newfrag __P((fr_info_t *, u_32_t, struct nat *));
extern nat_t *fr_nat_knownfrag __P((fr_info_t *));
extern int fr_ipid_newfrag __P((fr_info_t *, u_32_t));
extern u_32_t fr_ipid_knownfrag __P((fr_info_t *));
#ifdef USE_MUTEXES
extern void fr_fragderef __P((ipfr_t **, ipfrwlock_t *));
extern int fr_nextfrag __P((ipftoken_t *, ipfgeniter_t *, ipfr_t **, \
ipfr_t ***, ipfrwlock_t *));
#else
extern void fr_fragderef __P((ipfr_t **));
extern int fr_nextfrag __P((ipftoken_t *, ipfgeniter_t *, ipfr_t **, \
ipfr_t ***));
#endif
extern void fr_forget __P((void *));
extern void fr_forgetnat __P((void *));
extern void fr_fragclear __P((void));
extern void fr_fragexpire __P((void));
#if defined(_KERNEL) && ((BSD >= 199306) || SOLARIS || defined(__sgi) \
|| defined(__osf__) || (defined(__sgi) && (IRIX >= 60500)))
# if defined(SOLARIS2) && (SOLARIS2 < 7)
extern void fr_slowtimer __P((void));
# else
extern void fr_slowtimer __P((void *));
# endif
#else
# if defined(linux) && defined(_KERNEL)
extern void fr_slowtimer __P((long));
# else
extern int fr_slowtimer __P((void));
# endif
#endif
#endif /* __IP_FRAG_H__ */