| 1 | /* Modified for emx by hv and em 1994,1996
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| 2 | *
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| 3 | * Copyright (c) 1980, 1986 Regents of the University of California.
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| 4 | * All rights reserved.
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| 5 | *
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| 6 | * Redistribution and use in source and binary forms, with or without
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| 7 | * modification, are permitted provided that the following conditions
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| 8 | * are met:
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| 9 | * 1. Redistributions of source code must retain the above copyright
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| 10 | * notice, this list of conditions and the following disclaimer.
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| 11 | * 2. Redistributions in binary form must reproduce the above copyright
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| 12 | * notice, this list of conditions and the following disclaimer in the
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| 13 | * documentation and/or other materials provided with the distribution.
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| 14 | * 3. All advertising materials mentioning features or use of this software
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| 15 | * must display the following acknowledgement:
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| 16 | * This product includes software developed by the University of
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| 17 | * California, Berkeley and its contributors.
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| 18 | * 4. Neither the name of the University nor the names of its contributors
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| 19 | * may be used to endorse or promote products derived from this software
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| 20 | * without specific prior written permission.
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| 21 | *
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| 22 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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| 23 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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| 24 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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| 25 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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| 26 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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| 27 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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| 28 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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| 29 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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| 30 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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| 31 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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| 32 | * SUCH DAMAGE.
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| 33 | *
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| 34 | * from: @(#)route.h 7.13 (Berkeley) 4/25/91
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| 35 | * $Id: route.h,v 1.3 1993/05/20 03:06:10 cgd Exp $
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| 36 | */
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| 37 |
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| 38 | #ifndef _NET_ROUTE_H_
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| 39 | #define _NET_ROUTE_H_
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| 40 |
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| 41 | #include <net/if.h>
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| 42 |
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| 43 | #if defined (__cplusplus)
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| 44 | extern "C" {
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| 45 | #endif
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| 46 |
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| 47 | /*
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| 48 | * Kernel resident routing tables.
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| 49 | *
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| 50 | * The routing tables are initialized when interface addresses
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| 51 | * are set by making entries for all directly connected interfaces.
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| 52 | */
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| 53 |
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| 54 | /*
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| 55 | * A route consists of a destination address and a reference
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| 56 | * to a routing entry. These are often held by protocols
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| 57 | * in their control blocks, e.g. inpcb.
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| 58 | */
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| 59 | struct route {
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| 60 | struct rtentry *ro_rt;
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| 61 | struct sockaddr ro_dst;
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| 62 | };
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| 63 |
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| 64 | /*
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| 65 | * rmx_rtt and rmx_rttvar are stored as microseconds;
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| 66 | * RTTTOPRHZ(rtt) converts to a value suitable for use
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| 67 | * by a protocol slowtimo counter.
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| 68 | */
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| 69 | #define RTM_RTTUNIT 1000000 /* units for rtt, rttvar, as units per sec */
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| 70 | #define RTTTOPRHZ(r) ((r) / (RTM_RTTUNIT / PR_SLOWHZ))
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| 71 |
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| 72 | /*
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| 73 | * We distinguish between routes to hosts and routes to networks,
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| 74 | * preferring the former if available. For each route we infer
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| 75 | * the interface to use from the gateway address supplied when
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| 76 | * the route was entered. Routes that forward packets through
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| 77 | * gateways are marked so that the output routines know to address the
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| 78 | * gateway rather than the ultimate destination.
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| 79 | *
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| 80 | * Following structure necessary for 4.3 compatibility;
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| 81 | */
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| 82 | struct rtentry {
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| 83 | u_long rt_hash; /* to speed lookups */
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| 84 | struct sockaddr rt_dst; /* key */
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| 85 | struct sockaddr rt_gateway; /* value */
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| 86 | short rt_flags; /* up/down?, host/net */
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| 87 | short rt_refcnt; /* # held references */
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| 88 | u_long rt_use; /* raw # packets forwarded */
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| 89 | struct ifnet *rt_ifp; /* the answer: interface to use */
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| 90 | long metric1,metric2,metric3,metric4; /*IBM special */
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| 91 | };
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| 92 |
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| 93 | #define RTF_UP 0x1 /* route useable */
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| 94 | #define RTF_GATEWAY 0x2 /* destination is a gateway */
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| 95 | #define RTF_HOST 0x4 /* host entry (net otherwise) */
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| 96 | #define RTF_REJECT 0x8 /* host or net unreachable */
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| 97 | #define RTF_DYNAMIC 0x10 /* created dynamically (by redirect) */
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| 98 | #define RTF_MODIFIED 0x20 /* modified dynamically (by redirect) */
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| 99 | #define RTF_DONE 0x40 /* message confirmed */
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| 100 | #define RTF_MASK 0x80 /* subnet mask present */
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| 101 | #define RTF_CLONING 0x100 /* generate new routes on use */
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| 102 | #define RTF_XRESOLVE 0x200 /* external daemon resolves name */
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| 103 | #define RTF_LLINFO 0x400 /* generated by ARP or ESIS */
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| 104 | #define RTF_STATIC 0x800 /* route manually added */
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| 105 | #define RTF_BLACKHOLE 0x1000 /* discard packets during updates */
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| 106 | #define RTF_PROTO2 0x4000 /* protocol specific routing flag */
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| 107 | #define RTF_PROTO1 0x8000 /* protocol specific routing flag */
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| 108 |
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| 109 |
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| 110 | /*
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| 111 | * Routing statistics.
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| 112 | */
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| 113 | struct rtstat {
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| 114 | short rts_badredirect; /* bogus redirect calls */
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| 115 | short rts_dynamic; /* routes created by redirects */
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| 116 | short rts_newgateway; /* routes modified by redirects */
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| 117 | short rts_unreach; /* lookups which failed */
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| 118 | short rts_wildcard; /* lookups satisfied by a wildcard */
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| 119 | };
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| 120 | /*
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| 121 | * Structures for routing messages.
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| 122 | */
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| 123 | #ifndef __EMX__
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| 124 | struct rt_msghdr {
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| 125 | u_short rtm_msglen; /* to skip over non-understood messages */
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| 126 | u_char rtm_version; /* future binary compatability */
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| 127 | u_char rtm_type; /* message type */
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| 128 | u_short rtm_index; /* index for associated ifp */
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| 129 | pid_t rtm_pid; /* identify sender */
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| 130 | int rtm_addrs; /* bitmask identifying sockaddrs in msg */
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| 131 | int rtm_seq; /* for sender to identify action */
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| 132 | int rtm_errno; /* why failed */
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| 133 | int rtm_flags; /* flags, incl. kern & message, e.g. DONE */
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| 134 | int rtm_use; /* from rtentry */
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| 135 | u_long rtm_inits; /* which metrics we are initializing */
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| 136 | struct rt_metrics rtm_rmx; /* metrics themselves */
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| 137 | };
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| 138 |
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| 139 | struct route_cb {
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| 140 | int ip_count;
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| 141 | int ns_count;
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| 142 | int iso_count;
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| 143 | int any_count;
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| 144 | };
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| 145 | #define RTM_VERSION 2 /* Up the ante and ignore older versions */
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| 146 |
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| 147 | #define RTM_ADD 0x1 /* Add Route */
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| 148 | #define RTM_DELETE 0x2 /* Delete Route */
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| 149 | #define RTM_CHANGE 0x3 /* Change Metrics or flags */
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| 150 | #define RTM_GET 0x4 /* Report Metrics */
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| 151 | #define RTM_LOSING 0x5 /* Kernel Suspects Partitioning */
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| 152 | #define RTM_REDIRECT 0x6 /* Told to use different route */
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| 153 | #define RTM_MISS 0x7 /* Lookup failed on this address */
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| 154 | #define RTM_LOCK 0x8 /* fix specified metrics */
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| 155 | #define RTM_OLDADD 0x9 /* caused by SIOCADDRT */
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| 156 | #define RTM_OLDDEL 0xa /* caused by SIOCDELRT */
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| 157 | #define RTM_RESOLVE 0xb /* req to resolve dst to LL addr */
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| 158 |
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| 159 | #define RTV_MTU 0x1 /* init or lock _mtu */
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| 160 | #define RTV_HOPCOUNT 0x2 /* init or lock _hopcount */
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| 161 | #define RTV_EXPIRE 0x4 /* init or lock _hopcount */
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| 162 | #define RTV_RPIPE 0x8 /* init or lock _recvpipe */
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| 163 | #define RTV_SPIPE 0x10 /* init or lock _sendpipe */
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| 164 | #define RTV_SSTHRESH 0x20 /* init or lock _ssthresh */
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| 165 | #define RTV_RTT 0x40 /* init or lock _rtt */
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| 166 | #define RTV_RTTVAR 0x80 /* init or lock _rttvar */
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| 167 |
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| 168 | #define RTA_DST 0x1 /* destination sockaddr present */
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| 169 | #define RTA_GATEWAY 0x2 /* gateway sockaddr present */
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| 170 | #define RTA_NETMASK 0x4 /* netmask sockaddr present */
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| 171 | #define RTA_GENMASK 0x8 /* cloning mask sockaddr present */
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| 172 | #define RTA_IFP 0x10 /* interface name sockaddr present */
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| 173 | #define RTA_IFA 0x20 /* interface addr sockaddr present */
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| 174 | #define RTA_AUTHOR 0x40 /* sockaddr for author of redirect */
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| 175 | #endif
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| 176 |
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| 177 | /* IBM: hv: I think this is the internal structure of the RT table of the
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| 178 | * router daemon. Don't think it belongs here, but the toolkit has it as well
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| 179 | */
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| 180 | #define RTENTRY_COUNT 512
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| 181 | struct rtentries {
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| 182 | short hostcount;
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| 183 | short netcount;
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| 184 | struct rtentry rttable[RTENTRY_COUNT];
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| 185 | };
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| 186 |
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| 187 | #if defined (__cplusplus)
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| 188 | }
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| 189 | #endif
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| 190 |
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| 191 | #endif /* !_NET_ROUTE_H_ */
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