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/*
* Copyright (C) 1993-2001 by Darren Reed.
*
* See the IPFILTER.LICENCE file for details on licencing.
*
* @(#)ip_frag.h 1.5 3/24/96
* $Id$
*/
#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;
u_int ipfr_badorder;
int ipfr_ref;
u_short ipfr_off;
u_short ipfr_firstend;
u_char ipfr_p;
u_char 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;
i6addr_t ipfr_source;
i6addr_t ipfr_dest;
u_32_t ipfr_optmsk;
u_short ipfr_secmsk;
u_short ipfr_auth;
u_32_t ipfr_id;
u_32_t ipfr_pass;
} ipfr_t;
#define ipfr_src ipfr_source.in4
#define ipfr_dst ipfr_dest.in4
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 ipf_ipfrttl;
extern int ipf_frag_lock;
extern void ipf_frag_clear __P((void));
extern void ipf_frag_expire __P((void));
extern void ipf_frag_forget __P((void *));
extern int ipf_frag_init __P((void));
extern u_32_t ipf_frag_ipidknown __P((fr_info_t *));
extern int ipf_frag_ipidnew __P((fr_info_t *, u_32_t));
extern frentry_t *ipf_frag_known __P((fr_info_t *, u_32_t *));
extern void ipf_frag_natforget __P((void *));
extern int ipf_frag_natnew __P((fr_info_t *, u_32_t, struct nat *));
extern nat_t *ipf_frag_natknown __P((fr_info_t *));
extern int ipf_frag_new __P((fr_info_t *, u_32_t));
extern ipfrstat_t *ipf_frag_stats __P((void));
extern void ipf_frag_unload __P((void));
#ifdef USE_MUTEXES
extern void ipf_frag_deref __P((ipfr_t **, ipfrwlock_t *));
extern int ipf_frag_next __P((ipftoken_t *, ipfgeniter_t *, ipfr_t **, \
ipfr_t ***, ipfrwlock_t *));
#else
extern void ipf_frag_deref __P((ipfr_t **));
extern int ipf_frag_next __P((ipftoken_t *, ipfgeniter_t *, ipfr_t **, \
ipfr_t ***));
#endif
#if defined(_KERNEL) && ((BSD >= 199306) || SOLARIS || defined(__sgi) \
|| defined(__osf__) || (defined(__sgi) && (IRIX >= 60500)))
# if defined(SOLARIS2) && (SOLARIS2 < 7)
extern void ipf_slowtimer __P((void));
# else
extern void ipf_slowtimer __P((void *));
# endif
#else
extern int ipf_slowtimer __P((void));
#endif
#endif /* __IP_FRAG_H__ */