routed.tproj/table.h

   1 /*
   2  * Copyright (c) 1999 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * "Portions Copyright (c) 1999 Apple Computer, Inc.  All Rights
   7  * Reserved.  This file contains Original Code and/or Modifications of
   8  * Original Code as defined in and that are subject to the Apple Public
   9  * Source License Version 1.0 (the 'License').  You may not use this file
  10  * except in compliance with the License.  Please obtain a copy of the
  11  * License at http://www.apple.com/publicsource and read it before using
  12  * this file.
  13  *
  14  * The Original Code and all software distributed under the License are
  15  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  16  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  17  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  18  * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
  19  * License for the specific language governing rights and limitations
  20  * under the License."
  21  *
  22  * @APPLE_LICENSE_HEADER_END@
  23  */
  24 /*
  25  * Copyright (c) 1983, 1993
  26  *      The Regents of the University of California.  All rights reserved.
  27  *
  28  * Redistribution and use in source and binary forms, with or without
  29  * modification, are permitted provided that the following conditions
  30  * are met:
  31  * 1. Redistributions of source code must retain the above copyright
  32  *    notice, this list of conditions and the following disclaimer.
  33  * 2. Redistributions in binary form must reproduce the above copyright
  34  *    notice, this list of conditions and the following disclaimer in the
  35  *    documentation and/or other materials provided with the distribution.
  36  * 3. All advertising materials mentioning features or use of this software
  37  *    must display the following acknowledgment:
  38  *      This product includes software developed by the University of
  39  *      California, Berkeley and its contributors.
  40  * 4. Neither the name of the University nor the names of its contributors
  41  *    may be used to endorse or promote products derived from this software
  42  *    without specific prior written permission.
  43  *
  44  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  45  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  46  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  47  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  48  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  49  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  50  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  51  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  52  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  53  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  54  * SUCH DAMAGE.
  55  *
  56  *      @(#)defs.h      8.1 (Berkeley) 6/5/93
  57  */
  58
  59 /*
  60  * Routing table management daemon.
  61  */
  62
  63 /*
  64  * Routing table structure; differs a bit from kernel tables.
  65  *
  66  * Note: the union below must agree in the first 4 members
  67  * so the ioctl's will work.
  68  */
  69 struct rthash {
  70         struct  rt_entry *rt_forw;
  71         struct  rt_entry *rt_back;
  72 };
  73 #ifdef RTM_ADD
  74 #define rtentry ortentry
  75 #endif
  76
  77 struct rt_entry {
  78         struct  rt_entry *rt_forw;
  79         struct  rt_entry *rt_back;
  80         union {
  81                 struct  rtentry rtu_rt;
  82                 struct rtuentry {
  83                         u_long  rtu_hash;
  84                         struct  sockaddr rtu_dst;
  85                         struct  sockaddr rtu_router;
  86                         short   rtu_rtflags; /* used by rtioctl */
  87                         short   rtu_wasted[5];
  88                         int     rtu_flags;
  89                         int     rtu_state;
  90                         int     rtu_timer;
  91                         int     rtu_metric;
  92                         int     rtu_ifmetric;
  93                         struct  interface *rtu_ifp;
  94                 } rtu_entry;
  95         } rt_rtu;
  96 };
  97
  98 #define rt_rt           rt_rtu.rtu_entry                /* pass to ioctl */
  99 #define rt_hash         rt_rtu.rtu_entry.rtu_hash       /* for net or host */
 100 #define rt_dst          rt_rtu.rtu_entry.rtu_dst        /* match value */
 101 #define rt_router       rt_rtu.rtu_entry.rtu_router     /* who to forward to */
 102 #define rt_flags        rt_rtu.rtu_entry.rtu_flags      /* kernel flags */
 103 #define rt_timer        rt_rtu.rtu_entry.rtu_timer      /* for invalidation */
 104 #define rt_state        rt_rtu.rtu_entry.rtu_state      /* see below */
 105 #define rt_metric       rt_rtu.rtu_entry.rtu_metric     /* cost of route */
 106 #define rt_ifmetric     rt_rtu.rtu_entry.rtu_ifmetric   /* cost of route if */
 107 #define rt_ifp          rt_rtu.rtu_entry.rtu_ifp        /* interface to take */
 108
 109 #define ROUTEHASHSIZ    32              /* must be a power of 2 */
 110 #define ROUTEHASHMASK   (ROUTEHASHSIZ - 1)
 111
 112 /*
 113  * "State" of routing table entry.
 114  */
 115 #define RTS_CHANGED     0x1             /* route has been altered recently */
 116 #define RTS_EXTERNAL    0x2             /* extern info, not installed or sent */
 117 #define RTS_INTERNAL    0x4             /* internal route, not installed */
 118 #define RTS_PASSIVE     IFF_PASSIVE     /* don't time out route */
 119 #define RTS_INTERFACE   IFF_INTERFACE   /* route is for network interface */
 120 #define RTS_REMOTE      IFF_REMOTE      /* route is for ``remote'' entity */
 121 #define RTS_SUBNET      IFF_SUBNET      /* route is for network subnet */
 122
 123 /*
 124  * Flags are same as kernel, with this addition for af_rtflags:
 125  */
 126 #define RTF_SUBNET      0x80000         /* pseudo: route to subnet */
 127
 128 EXTERN struct   rthash nethash[ROUTEHASHSIZ];
 129 EXTERN struct   rthash hosthash[ROUTEHASHSIZ];
 130
 131 struct rt_entry *rtlookup(struct sockaddr *);
 132 struct rt_entry *rtfind(struct sockaddr *);
 133 void rtadd(struct sockaddr *, struct sockaddr *, int, int);
 134 void rtchange(struct rt_entry *, struct sockaddr *, short);
 135 void rtdelete(struct rt_entry *);
 136 void rtdeleteall(int);
 137 void rtdefault(void);
 138 void rtinit(void);
 139 int rtioctl(int, struct rtuentry *);