| /*- |
| * Copyright (c) 1983, 1989, 1993 |
| * The Regents of the University of California. All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * 4. Neither the name of the University nor the names of its contributors |
| * may be used to endorse or promote products derived from this software |
| * without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
| * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
| * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| * SUCH DAMAGE. |
| * |
| * @(#)routed.h 8.1 (Berkeley) 6/2/93 |
| */ |
| |
| #ifndef _PROTOCOLS_ROUTED_H |
| #define _PROTOCOLS_ROUTED_H 1 |
| |
| #include <sys/socket.h> |
| /* |
| * Routing Information Protocol |
| * |
| * Derived from Xerox NS Routing Information Protocol |
| * by changing 32-bit net numbers to sockaddr's and |
| * padding stuff to 32-bit boundaries. |
| */ |
| #define RIPVERSION 1 |
| |
| struct netinfo { |
| struct sockaddr rip_dst; /* destination net/host */ |
| int rip_metric; /* cost of route */ |
| }; |
| |
| struct rip { |
| u_char rip_cmd; /* request/response */ |
| u_char rip_vers; /* protocol version # */ |
| u_char rip_res1[2]; /* pad to 32-bit boundary */ |
| union { |
| struct netinfo ru_nets[1]; /* variable length... */ |
| char ru_tracefile[1]; /* ditto ... */ |
| } ripun; |
| #define rip_nets ripun.ru_nets |
| #define rip_tracefile ripun.ru_tracefile |
| }; |
| |
| /* |
| * Packet types. |
| */ |
| #define RIPCMD_REQUEST 1 /* want info */ |
| #define RIPCMD_RESPONSE 2 /* responding to request */ |
| #define RIPCMD_TRACEON 3 /* turn tracing on */ |
| #define RIPCMD_TRACEOFF 4 /* turn it off */ |
| |
| #define RIPCMD_MAX 5 |
| #ifdef RIPCMDS |
| char *ripcmds[RIPCMD_MAX] = |
| { "#0", "REQUEST", "RESPONSE", "TRACEON", "TRACEOFF" }; |
| #endif |
| |
| #define HOPCNT_INFINITY 16 /* per Xerox NS */ |
| #define MAXPACKETSIZE 512 /* max broadcast size */ |
| |
| /* |
| * Timer values used in managing the routing table. |
| * Complete tables are broadcast every SUPPLY_INTERVAL seconds. |
| * If changes occur between updates, dynamic updates containing only changes |
| * may be sent. When these are sent, a timer is set for a random value |
| * between MIN_WAITTIME and MAX_WAITTIME, and no additional dynamic updates |
| * are sent until the timer expires. |
| * |
| * Every update of a routing entry forces an entry's timer to be reset. |
| * After EXPIRE_TIME without updates, the entry is marked invalid, |
| * but held onto until GARBAGE_TIME so that others may |
| * see it "be deleted". |
| */ |
| #define TIMER_RATE 30 /* alarm clocks every 30 seconds */ |
| |
| #define SUPPLY_INTERVAL 30 /* time to supply tables */ |
| #define MIN_WAITTIME 2 /* min. interval to broadcast changes */ |
| #define MAX_WAITTIME 5 /* max. time to delay changes */ |
| |
| #define EXPIRE_TIME 180 /* time to mark entry invalid */ |
| #define GARBAGE_TIME 240 /* time to garbage collect */ |
| |
| #endif /* protocols/routed.h */ |