| 1 | /*-
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| 2 | * Copyright (c) 1983, 1989, 1993
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| 3 | * The Regents of the University of California. All rights reserved.
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| 4 | *
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| 5 | * Redistribution and use in source and binary forms, with or without
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| 6 | * modification, are permitted provided that the following conditions
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| 7 | * are met:
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| 8 | * 1. Redistributions of source code must retain the above copyright
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| 9 | * notice, this list of conditions and the following disclaimer.
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| 10 | * 2. Redistributions in binary form must reproduce the above copyright
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| 11 | * notice, this list of conditions and the following disclaimer in the
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| 12 | * documentation and/or other materials provided with the distribution.
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| 13 | * 3. All advertising materials mentioning features or use of this software
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| 14 | * must display the following acknowledgment:
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| 15 | * This product includes software developed by the University of
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| 16 | * California, Berkeley and its contributors.
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| 17 | * 4. Neither the name of the University nor the names of its contributors
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| 18 | * may be used to endorse or promote products derived from this software
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| 19 | * without specific prior written permission.
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| 20 | *
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| 21 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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| 22 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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| 23 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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| 24 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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| 25 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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| 26 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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| 27 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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| 28 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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| 29 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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| 30 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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| 31 | * SUCH DAMAGE.
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| 32 | *
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| 33 | * @(#)routed.h 8.1 (Berkeley) 6/2/93
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| 34 | *
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| 35 | * $FreeBSD: src/include/protocols/routed.h,v 1.15 1999/09/05 17:43:31 peter Exp $
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| 36 | *
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| 37 | * @@level FreeBSD 5.1
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| 38 | * @@changed bird: TCPV40HDRS, TIMER_RATE from OS/2 headers.
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| 39 | */
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| 40 |
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| 41 | #ifndef _ROUTED_H_
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| 42 | #define _ROUTED_H_
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| 43 | #ifndef TCPV40HDRS
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| 44 |
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| 45 | #ifdef __cplusplus
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| 46 | extern "C" {
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| 47 | #endif
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| 48 |
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| 49 | /*
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| 50 | * Routing Information Protocol
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| 51 | *
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| 52 | * Derived from Xerox NS Routing Information Protocol
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| 53 | * by changing 32-bit net numbers to sockaddr's and
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| 54 | * padding stuff to 32-bit boundaries.
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| 55 | */
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| 56 |
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| 57 | #define RIPv1 1
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| 58 | #define RIPv2 2
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| 59 | #ifndef RIPVERSION
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| 60 | #define RIPVERSION RIPv1
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| 61 | #endif
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| 62 |
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| 63 | #define RIP_PORT 520
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| 64 |
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| 65 | #if RIPVERSION == 1
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| 66 | /* Note that this so called sockaddr has a 2-byte sa_family and no sa_len.
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| 67 | * It is not a UNIX sockaddr, but the shape of an address as defined
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| 68 | * in RIPv1. It is still defined to allow old versions of programs
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| 69 | * such as `gated` to use this file to define RIPv1.
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| 70 | */
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| 71 | struct netinfo {
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| 72 | struct sockaddr rip_dst; /* destination net/host */
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| 73 | u_int32_t rip_metric; /* cost of route */
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| 74 | };
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| 75 | #else
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| 76 | struct netinfo {
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| 77 | u_int16_t n_family;
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| 78 | #define RIP_AF_INET htons(AF_INET)
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| 79 | #define RIP_AF_UNSPEC 0
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| 80 | #define RIP_AF_AUTH 0xffff
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| 81 | u_int16_t n_tag; /* optional in RIPv2 */
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| 82 | u_int32_t n_dst; /* destination net or host */
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| 83 | #define RIP_DEFAULT 0
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| 84 | u_int32_t n_mask; /* netmask in RIPv2 */
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| 85 | u_int32_t n_nhop; /* optional next hop in RIPv2 */
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| 86 | u_int32_t n_metric; /* cost of route */
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| 87 | };
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| 88 | #endif
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| 89 |
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| 90 | /* RIPv2 authentication */
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| 91 | struct netauth {
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| 92 | u_int16_t a_family; /* always RIP_AF_AUTH */
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| 93 | u_int16_t a_type;
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| 94 | #define RIP_AUTH_NONE 0
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| 95 | #define RIP_AUTH_PW htons(2) /* password type */
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| 96 | #define RIP_AUTH_MD5 htons(3) /* Keyed MD5 */
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| 97 | union {
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| 98 | #define RIP_AUTH_PW_LEN 16
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| 99 | u_int8_t au_pw[RIP_AUTH_PW_LEN];
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| 100 | struct a_md5 {
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| 101 | int16_t md5_pkt_len; /* RIP-II packet length */
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| 102 | int8_t md5_keyid; /* key ID and auth data len */
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| 103 | int8_t md5_auth_len; /* 16 */
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| 104 | u_int32_t md5_seqno; /* sequence number */
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| 105 | u_int32_t rsvd[2]; /* must be 0 */
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| 106 | #define RIP_AUTH_MD5_LEN RIP_AUTH_PW_LEN
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| 107 | } a_md5;
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| 108 | } au;
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| 109 | };
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| 110 |
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| 111 | struct rip {
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| 112 | u_int8_t rip_cmd; /* request/response */
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| 113 | u_int8_t rip_vers; /* protocol version # */
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| 114 | u_int16_t rip_res1; /* pad to 32-bit boundary */
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| 115 | union { /* variable length... */
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| 116 | struct netinfo ru_nets[1];
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| 117 | int8_t ru_tracefile[1];
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| 118 | struct netauth ru_auth[1];
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| 119 | } ripun;
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| 120 | #define rip_nets ripun.ru_nets
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| 121 | #define rip_auths ripun.ru_auth
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| 122 | #define rip_tracefile ripun.ru_tracefile
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| 123 | };
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| 124 |
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| 125 | /* Packet types.
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| 126 | */
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| 127 | #define RIPCMD_REQUEST 1 /* want info */
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| 128 | #define RIPCMD_RESPONSE 2 /* responding to request */
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| 129 | #define RIPCMD_TRACEON 3 /* turn tracing on */
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| 130 | #define RIPCMD_TRACEOFF 4 /* turn it off */
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| 131 |
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| 132 | /* Gated extended RIP to include a "poll" command instead of using
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| 133 | * RIPCMD_REQUEST with (RIP_AF_UNSPEC, RIP_DEFAULT). RFC 1058 says
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| 134 | * command 5 is used by Sun Microsystems for its own purposes.
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| 135 | */
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| 136 | #define RIPCMD_POLL 5
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| 137 |
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| 138 | #define RIPCMD_MAX 6
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| 139 |
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| 140 | #ifdef RIPCMDS
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| 141 | const char *ripcmds[RIPCMD_MAX] = {
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| 142 | "#0", "REQUEST", "RESPONSE", "TRACEON", "TRACEOFF"
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| 143 | };
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| 144 | #endif
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| 145 |
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| 146 | #define HOPCNT_INFINITY 16
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| 147 | #define MAXPACKETSIZE 512 /* max broadcast size */
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| 148 | #define NETS_LEN ((MAXPACKETSIZE-sizeof(struct rip)) \
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| 149 | / sizeof(struct netinfo) +1)
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| 150 |
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| 151 | #define INADDR_RIP_GROUP (u_int32_t)0xe0000009 /* 224.0.0.9 */
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| 152 |
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| 153 |
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| 154 | /* Timer values used in managing the routing table.
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| 155 | *
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| 156 | * Complete tables are broadcast every SUPPLY_INTERVAL seconds.
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| 157 | * If changes occur between updates, dynamic updates containing only changes
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| 158 | * may be sent. When these are sent, a timer is set for a random value
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| 159 | * between MIN_WAITTIME and MAX_WAITTIME, and no additional dynamic updates
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| 160 | * are sent until the timer expires.
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| 161 | *
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| 162 | * Every update of a routing entry forces an entry's timer to be reset.
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| 163 | * After EXPIRE_TIME without updates, the entry is marked invalid,
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| 164 | * but held onto until GARBAGE_TIME so that others may see it, to
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| 165 | * "poison" the bad route.
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| 166 | */
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| 167 | #define SUPPLY_INTERVAL 30 /* time to supply tables */
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| 168 | #define MIN_WAITTIME 2 /* min sec until next flash updates */
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| 169 | #define MAX_WAITTIME 5 /* max sec until flash update */
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| 170 |
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| 171 | #define STALE_TIME 90 /* switch to a new gateway */
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| 172 | #define EXPIRE_TIME 180 /* time to mark entry invalid */
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| 173 | #define GARBAGE_TIME 240 /* time to garbage collect */
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| 174 |
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| 175 | /* OS2 only? SUPPLY_INTERVAL I guess. */
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| 176 | #define TIMER_RATE 30 /* alarm clocks every 30 seconds */
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| 177 |
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| 178 | #ifdef __cplusplus
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| 179 | }
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| 180 | #endif
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| 181 | #endif /*!TCPV40HDRS*/
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| 182 | #endif /* !_ROUTED_H_ */
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