sys/dist/ipf/netinet/ip_frag.h

   1 /*      $NetBSD$        */
   2
   3 /*
   4  * Copyright (C) 1993-2001 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 2.23.2.7 2009/01/01 03:53:17 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         int     ipfr_ref;
  24         u_short ipfr_off;
  25         u_short ipfr_seen0;
  26         /*
  27          * All of the fields, from ipfr_ifp to ipfr_pass, are compared
  28          * using bcmp to see if an identical entry is present.  It is
  29          * therefore important for this set to remain together.
  30          */
  31         void    *ipfr_ifp;
  32         i6addr_t ipfr_src;
  33         i6addr_t ipfr_dst;
  34         u_32_t  ipfr_optmsk;
  35         u_short ipfr_secmsk;
  36         u_short ipfr_auth;
  37         u_32_t  ipfr_id;
  38         u_32_t  ipfr_p;
  39         u_32_t  ipfr_tos;
  40         u_32_t  ipfr_pass;
  41 } ipfr_t;
  42
  43
  44 typedef struct  ipfrstat {
  45         u_long  ifs_exists;     /* add & already exists */
  46         u_long  ifs_nomem;
  47         u_long  ifs_new;
  48         u_long  ifs_hits;
  49         u_long  ifs_expire;
  50         u_long  ifs_inuse;
  51         u_long  ifs_retrans0;
  52         u_long  ifs_short;
  53         struct  ipfr    **ifs_table;
  54         struct  ipfr    **ifs_nattab;
  55 } ipfrstat_t;
  56
  57 #define IPFR_CMPSZ      (offsetof(ipfr_t, ipfr_pass) - \
  58                          offsetof(ipfr_t, ipfr_ifp))
  59
  60 extern  ipfr_t  *ipfr_list, **ipfr_tail;
  61 extern  ipfr_t  *ipfr_natlist, **ipfr_nattail;
  62 extern  int     ipfr_size;
  63 extern  int     fr_ipfrttl;
  64 extern  int     fr_frag_lock;
  65 extern  int     fr_fraginit __P((void));
  66 extern  void    fr_fragunload __P((void));
  67 extern  ipfrstat_t      *fr_fragstats __P((void));
  68
  69 extern  int     fr_newfrag __P((fr_info_t *, u_32_t));
  70 extern  frentry_t *fr_knownfrag __P((fr_info_t *, u_32_t *));
  71
  72 extern  int     fr_nat_newfrag __P((fr_info_t *, u_32_t, struct nat *));
  73 extern  nat_t   *fr_nat_knownfrag __P((fr_info_t *));
  74
  75 extern  int     fr_ipid_newfrag __P((fr_info_t *, u_32_t));
  76 extern  u_32_t  fr_ipid_knownfrag __P((fr_info_t *));
  77 #ifdef USE_MUTEXES
  78 extern  void    fr_fragderef __P((ipfr_t **, ipfrwlock_t *));
  79 extern  int     fr_nextfrag __P((ipftoken_t *, ipfgeniter_t *, ipfr_t **, \
  80                                  ipfr_t ***, ipfrwlock_t *));
  81 #else
  82 extern  void    fr_fragderef __P((ipfr_t **));
  83 extern  int     fr_nextfrag __P((ipftoken_t *, ipfgeniter_t *, ipfr_t **, \
  84                                  ipfr_t ***));
  85 #endif
  86
  87 extern  void    fr_forget __P((void *));
  88 extern  void    fr_forgetnat __P((void *));
  89 extern  void    fr_fragclear __P((void));
  90 extern  void    fr_fragexpire __P((void));
  91
  92 #if defined(_KERNEL) && ((defined(BSD) && (BSD >= 199306)) || SOLARIS || \
  93     defined(__sgi) || defined(__osf__) || (defined(__sgi) && (IRIX >= 60500)))
  94 # if defined(SOLARIS2) && (SOLARIS2 < 7)
  95 extern  void    fr_slowtimer __P((void));
  96 # else
  97 extern  void    fr_slowtimer __P((void *));
  98 # endif
  99 #else
 100 # if defined(linux) && defined(_KERNEL)
 101 extern  void    fr_slowtimer __P((long));
 102 # else
 103 extern  int     fr_slowtimer __P((void));
 104 # endif
 105 #endif
 106
 107 #endif /* _NETINET_IP_FRAG_H_ */