/* $NetBSD: ip_frag.h,v 1.5 2008/05/20 07:08:07 darrenr Exp $ */ /* * 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: ip_frag.h,v 2.23.2.6 2008/04/09 10:54:03 darrenr Exp */ #ifndef _NETINET_IP_FRAG_H_ #define _NETINET_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) && ((defined(BSD) && (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 /* _NETINET_IP_FRAG_H_ */