1 /* 2 * Copyright 2002 Sun Microsystems, Inc. All rights reserved. 3 * Use is subject to license terms. 4 */ 5 6 /* Copyright (c) 1983, 1984, 1985, 1986, 1987, 1988, 1989 AT&T */ 7 /* All Rights Reserved */ 8 9 /* 10 * Copyright (c) 1983, 1989, 1993 11 * The Regents of the University of California. All rights reserved. 12 * 13 * Redistribution and use in source and binary forms, with or without 14 * modification, are permitted provided that the following conditions 15 * are met: 16 * 1. Redistributions of source code must retain the above copyright 17 * notice, this list of conditions and the following disclaimer. 18 * 2. Redistributions in binary form must reproduce the above copyright 19 * notice, this list of conditions and the following disclaimer in the 20 * documentation and/or other materials provided with the distribution. 21 * 3. All advertising materials mentioning features or use of this software 22 * must display the following acknowledgment: 23 * This product includes software developed by the University of 24 * California, Berkeley and its contributors. 25 * 4. Neither the name of the University nor the names of its contributors 26 * may be used to endorse or promote products derived from this software 27 * without specific prior written permission. 28 * 29 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 30 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 31 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 32 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 33 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 34 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 35 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 36 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 37 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 38 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 39 * SUCH DAMAGE. 40 */ 41 42 /* 43 * Routing Information Protocol 44 * 45 * Derived from Xerox NS Routing Information Protocol 46 * by changing 32-bit net numbers to sockaddr's and 47 * padding stuff to 32-bit boundaries. 48 */ 49 50 #ifndef _PROTOCOLS_ROUTED_H 51 #define _PROTOCOLS_ROUTED_H 52 53 #pragma ident "%Z%%M% %I% %E% SMI" 54 55 #ifdef __cplusplus 56 extern "C" { 57 #endif 58 59 /* The RIPv2 protocol is described in RFC 2453 */ 60 61 #define RIPv1 1 62 #define RIPv2 2 63 #ifndef RIPVERSION 64 #define RIPVERSION RIPv1 65 #endif 66 67 #define RIP_PORT 520 68 69 #if RIPVERSION == RIPv1 70 struct netinfo { 71 struct sockaddr rip_dst; /* destination net/host */ 72 uint32_t rip_metric; /* cost of route */ 73 }; 74 #else 75 struct netinfo { 76 uint16_t n_family; 77 #define RIP_AF_INET htons(AF_INET) 78 #define RIP_AF_UNSPEC 0 79 #define RIP_AF_AUTH 0xffff 80 uint16_t n_tag; /* optional in RIPv2 */ 81 uint32_t n_dst; /* destination net or host */ 82 #define RIP_DEFAULT 0 83 uint32_t n_mask; /* netmask in RIPv2 */ 84 uint32_t n_nhop; /* optional next hop in RIPv2 */ 85 uint32_t n_metric; /* cost of route */ 86 }; 87 #endif /* RIPv1 */ 88 89 /* RIPv2 authentication */ 90 struct netauth { 91 uint16_t a_family; /* always RIP_AF_AUTH */ 92 uint16_t a_type; 93 #define RIP_AUTH_NONE 0 94 #define RIP_AUTH_TRAILER htons(1) /* authentication data */ 95 #define RIP_AUTH_PW htons(2) /* password type */ 96 #define RIP_AUTH_MD5 htons(3) /* Keyed MD5 */ 97 union { 98 #define RIP_AUTH_PW_LEN 16 99 uint8_t au_pw[RIP_AUTH_PW_LEN]; 100 struct a_md5 { 101 int16_t md5_pkt_len; /* RIP-II packet length */ 102 int8_t md5_keyid; /* key ID and auth data len */ 103 int8_t md5_auth_len; /* 16 */ 104 uint32_t md5_seqno; /* sequence number */ 105 uint32_t rsvd[2]; /* must be 0 */ 106 #define RIP_AUTH_MD5_LEN RIP_AUTH_PW_LEN 107 } a_md5; 108 } au; 109 }; 110 111 struct rip { 112 uint8_t rip_cmd; /* request/response */ 113 uint8_t rip_vers; /* protocol version # */ 114 uint16_t rip_res1; /* pad to 32-bit boundary */ 115 union { /* variable length... */ 116 struct netinfo ru_nets[1]; /* variable length... */ 117 char ru_tracefile[1]; /* ditto ... */ 118 struct netauth ru_auth[1]; 119 } ripun; 120 #define rip_nets ripun.ru_nets 121 #define rip_tracefile ripun.ru_tracefile 122 #define rip_auths ripun.ru_auth 123 }; 124 125 struct entryinfo { 126 struct sockaddr rtu_dst; 127 struct sockaddr rtu_router; 128 short rtu_flags; 129 short rtu_state; 130 int rtu_timer; 131 int rtu_metric; 132 int int_flags; 133 char int_name[16]; 134 }; 135 136 /* 137 * Packet types. 138 */ 139 #define RIPCMD_REQUEST 1 /* want info - from suppliers */ 140 #define RIPCMD_RESPONSE 2 /* responding to request */ 141 #define RIPCMD_TRACEON 3 /* turn tracing on */ 142 #define RIPCMD_TRACEOFF 4 /* turn it off */ 143 144 /* 145 * Gated extended RIP to include a "poll" command instead of using 146 * RIPCMD_REQUEST with (RIP_AF_UNSPEC, RIP_DEFAULT). RFC 1058 says 147 * command 5 is used by Sun Microsystems for its own purposes. 148 */ 149 #define RIPCMD_POLL 5 /* like request, but anyone answers */ 150 #define RIPCMD_POLLENTRY 6 /* like poll, but for entire entry */ 151 152 #define RIPCMD_MAX 7 153 154 #define HOPCNT_INFINITY 16 /* per Xerox NS */ 155 #define MAXPACKETSIZE 512 /* max broadcast size */ 156 #define NETS_LEN ((MAXPACKETSIZE - sizeof (struct rip)) \ 157 / sizeof (struct netinfo) +1) 158 159 #define INADDR_RIP_GROUP 0xe0000009U /* 224.0.0.9 */ 160 161 /* 162 * Timer values used in managing the routing table. 163 * 164 * Complete tables are broadcast every SUPPLY_INTERVAL seconds. 165 * If changes occur between updates, dynamic updates containing only changes 166 * may be sent. When these are sent, a timer is set for a random value 167 * between MIN_WAITTIME and MAX_WAITTIME, and no additional dynamic updates 168 * are sent until the timer expires. 169 * 170 * Every update of a routing entry forces an entry's timer to be reset. 171 * After EXPIRE_TIME without updates, the entry is marked invalid, 172 * but held onto until GARBAGE_TIME so that others may see it, to 173 * "poison" the bad route. 174 */ 175 #define TIMER_RATE 30 /* alarm clocks every 30 seconds */ 176 177 #define SUPPLY_INTERVAL 30 /* time to supply tables */ 178 #define MIN_WAITTIME 2 /* min sec until next flash updates */ 179 #define MAX_WAITTIME 5 /* max sec until flash update */ 180 181 #define STALE_TIME 90 /* switch to a new gateway */ 182 #define EXPIRE_TIME 180 /* time to mark entry invalid */ 183 #define GARBAGE_TIME 300 /* time to garbage collect */ 184 185 #ifdef __cplusplus 186 } 187 #endif 188 189 #endif /* _PROTOCOLS_ROUTED_H */ 190