include/netinet/ip_frag.h

   1 /*
   2  * Copyright (C) 1993-2001 by Darren Reed.
   3  *
   4  * See the IPFILTER.LICENCE file for details on licencing.
   5  *
   6  * @(#)ip_frag.h        1.5 3/24/96
   7  * $Id: ip_frag.h,v 2.23.2.2 2005/06/10 18:02:37 darrenr Exp $
   8  *
   9  * Copyright 2009 Sun Microsystems, Inc.  All rights reserved.
  10  * Use is subject to license terms.
  11  */
  12
  13 #ifndef __IP_FRAG_H__
  14 #define __IP_FRAG_H__
  15
  16 #define IPFT_SIZE       257
  17
  18 typedef struct  ipfr    {
  19         struct  ipfr    *ipfr_hnext, **ipfr_hprev;
  20         struct  ipfr    *ipfr_next, **ipfr_prev;
  21         void    *ipfr_data;
  22         void    *ipfr_ifp;
  23         i6addr_t        ipfr_src;
  24         i6addr_t        ipfr_dst;
  25         u_32_t  ipfr_optmsk;
  26         u_short ipfr_secmsk;
  27         u_short ipfr_auth;
  28         u_32_t  ipfr_id;
  29         u_32_t  ipfr_p;
  30         u_32_t  ipfr_tos;
  31         u_32_t  ipfr_pass;
  32         u_short ipfr_off;
  33         u_long  ipfr_ttl;
  34         u_char  ipfr_seen0;
  35         frentry_t *ipfr_rule;
  36         int     ipfr_ref;
  37 } ipfr_t;
  38
  39 typedef struct  ipfrstat {
  40         u_long  ifs_exists;     /* add & already exists */
  41         u_long  ifs_nomem;
  42         u_long  ifs_new;
  43         u_long  ifs_hits;
  44         u_long  ifs_expire;
  45         u_long  ifs_inuse;
  46         u_long  ifs_retrans0;
  47         u_long  ifs_short;
  48         struct  ipfr    **ifs_table;
  49         struct  ipfr    **ifs_nattab;
  50 } ipfrstat_t;
  51
  52 #define IPFR_CMPSZ      (offsetof(ipfr_t, ipfr_tos) - \
  53                          offsetof(ipfr_t, ipfr_ifp))
  54
  55 extern  int     fr_fraginit __P((ipf_stack_t *));
  56 extern  void    fr_fragunload __P((ipf_stack_t *));
  57 extern  ipfrstat_t      *fr_fragstats __P((ipf_stack_t *));
  58
  59 extern  int     fr_newfrag __P((fr_info_t *, u_32_t));
  60 extern  frentry_t *fr_knownfrag __P((fr_info_t *, u_32_t *));
  61
  62 extern  int     fr_nat_newfrag __P((fr_info_t *, u_32_t, struct nat *));
  63 extern  nat_t   *fr_nat_knownfrag __P((fr_info_t *));
  64
  65 extern  int     fr_ipid_newfrag __P((fr_info_t *, u_32_t));
  66 extern  u_32_t  fr_ipid_knownfrag __P((fr_info_t *));
  67 extern  void    fr_fragderef __P((ipfr_t **, ipfrwlock_t *, ipf_stack_t *));
  68
  69 extern  void    fr_forget __P((void *, ipf_stack_t *));
  70 extern  void    fr_forgetnat __P((void *, ipf_stack_t *));
  71 extern  void    fr_fragclear __P((ipf_stack_t *));
  72 extern  void    fr_fragexpire __P((ipf_stack_t *));
  73 extern  int     fr_nextfrag __P((ipftoken_t *, ipfgeniter_t *, ipfr_t **, \
  74                                  ipfr_t ***, ipfrwlock_t *, ipf_stack_t *));
  75
  76 #if     defined(_KERNEL) && ((BSD >= 199306) || defined(SOLARIS) || \
  77         defined(__sgi) || defined(__osf__) || \
  78         (defined(__sgi) && (IRIX >= 60500)))
  79 # if defined(SOLARIS2) && (SOLARIS2 < 7)
  80 extern  void    fr_slowtimer __P((void *));
  81 # else
  82 extern  void    fr_slowtimer __P((void *));
  83 # endif
  84 #else
  85 # if defined(linux) && defined(_KERNEL)
  86 extern  void    fr_slowtimer __P((long));
  87 # else
  88 extern  int     fr_slowtimer __P((void *));
  89 # endif
  90 #endif
  91
  92 #endif  /* __IP_FRAG_H__ */