routed.tproj/table.h

   1 /*
   2  * Copyright (c) 1999 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * Copyright (c) 1999-2003 Apple Computer, Inc.  All Rights Reserved.
   7  *
   8  * This file contains Original Code and/or Modifications of Original Code
   9  * as defined in and that are subject to the Apple Public Source License
  10  * Version 2.0 (the 'License'). You may not use this file except in
  11  * compliance with the License. Please obtain a copy of the License at
  12  * http://www.opensource.apple.com/apsl/ and read it before using this
  13  * file.
  14  *
  15  * The Original Code and all software distributed under the License are
  16  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  17  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  18  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  19  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  20  * Please see the License for the specific language governing rights and
  21  * limitations under the License.
  22  *
  23  * @APPLE_LICENSE_HEADER_END@
  24  */
  25 /*
  26  * Copyright (c) 1983, 1993
  27  *      The Regents of the University of California.  All rights reserved.
  28  *
  29  * Redistribution and use in source and binary forms, with or without
  30  * modification, are permitted provided that the following conditions
  31  * are met:
  32  * 1. Redistributions of source code must retain the above copyright
  33  *    notice, this list of conditions and the following disclaimer.
  34  * 2. Redistributions in binary form must reproduce the above copyright
  35  *    notice, this list of conditions and the following disclaimer in the
  36  *    documentation and/or other materials provided with the distribution.
  37  * 3. All advertising materials mentioning features or use of this software
  38  *    must display the following acknowledgment:
  39  *      This product includes software developed by the University of
  40  *      California, Berkeley and its contributors.
  41  * 4. Neither the name of the University nor the names of its contributors
  42  *    may be used to endorse or promote products derived from this software
  43  *    without specific prior written permission.
  44  *
  45  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  46  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  47  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  48  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  49  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  50  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  51  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  52  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  53  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  54  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  55  * SUCH DAMAGE.
  56  *
  57  *      @(#)defs.h      8.1 (Berkeley) 6/5/93
  58  */
  59
  60 /*
  61  * Routing table management daemon.
  62  */
  63
  64 /*
  65  * Routing table structure; differs a bit from kernel tables.
  66  *
  67  * Note: the union below must agree in the first 4 members
  68  * so the ioctl's will work.
  69  */
  70 struct rthash {
  71         struct  rt_entry *rt_forw;
  72         struct  rt_entry *rt_back;
  73 };
  74 #ifdef RTM_ADD
  75 #define rtentry ortentry
  76 #endif
  77
  78 struct rt_entry {
  79         struct  rt_entry *rt_forw;
  80         struct  rt_entry *rt_back;
  81         union {
  82                 struct  rtentry rtu_rt;
  83                 struct rtuentry {
  84                         u_long  rtu_hash;
  85                         struct  sockaddr rtu_dst;
  86                         struct  sockaddr rtu_router;
  87                         short   rtu_rtflags; /* used by rtioctl */
  88                         short   rtu_wasted[5];
  89                         int     rtu_flags;
  90                         int     rtu_state;
  91                         int     rtu_timer;
  92                         int     rtu_metric;
  93                         int     rtu_ifmetric;
  94                         struct  interface *rtu_ifp;
  95                 } rtu_entry;
  96         } rt_rtu;
  97 };
  98
  99 #define rt_rt           rt_rtu.rtu_entry                /* pass to ioctl */
 100 #define rt_hash         rt_rtu.rtu_entry.rtu_hash       /* for net or host */
 101 #define rt_dst          rt_rtu.rtu_entry.rtu_dst        /* match value */
 102 #define rt_router       rt_rtu.rtu_entry.rtu_router     /* who to forward to */
 103 #define rt_flags        rt_rtu.rtu_entry.rtu_flags      /* kernel flags */
 104 #define rt_timer        rt_rtu.rtu_entry.rtu_timer      /* for invalidation */
 105 #define rt_state        rt_rtu.rtu_entry.rtu_state      /* see below */
 106 #define rt_metric       rt_rtu.rtu_entry.rtu_metric     /* cost of route */
 107 #define rt_ifmetric     rt_rtu.rtu_entry.rtu_ifmetric   /* cost of route if */
 108 #define rt_ifp          rt_rtu.rtu_entry.rtu_ifp        /* interface to take */
 109
 110 #define ROUTEHASHSIZ    32              /* must be a power of 2 */
 111 #define ROUTEHASHMASK   (ROUTEHASHSIZ - 1)
 112
 113 /*
 114  * "State" of routing table entry.
 115  */
 116 #define RTS_CHANGED     0x1             /* route has been altered recently */
 117 #define RTS_EXTERNAL    0x2             /* extern info, not installed or sent */
 118 #define RTS_INTERNAL    0x4             /* internal route, not installed */
 119 #define RTS_PASSIVE     IFF_PASSIVE     /* don't time out route */
 120 #define RTS_INTERFACE   IFF_INTERFACE   /* route is for network interface */
 121 #define RTS_REMOTE      IFF_REMOTE      /* route is for ``remote'' entity */
 122 #define RTS_SUBNET      IFF_SUBNET      /* route is for network subnet */
 123
 124 /*
 125  * Flags are same as kernel, with this addition for af_rtflags:
 126  */
 127 #define RTF_SUBNET      0x80000         /* pseudo: route to subnet */
 128
 129 EXTERN struct   rthash nethash[ROUTEHASHSIZ];
 130 EXTERN struct   rthash hosthash[ROUTEHASHSIZ];
 131 struct  rt_entry *rtlookup();
 132 struct  rt_entry *rtfind();