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Diffstat (limited to 'include/protocols/routed.h')
| -rw-r--r-- | include/protocols/routed.h | 152 |
1 files changed, 152 insertions, 0 deletions
diff --git a/include/protocols/routed.h b/include/protocols/routed.h new file mode 100644 index 0000000..83331a4 --- /dev/null +++ b/include/protocols/routed.h @@ -0,0 +1,152 @@ +/* $OpenBSD: routed.h,v 1.3 2003/06/02 19:34:12 millert Exp $ */ + +/*- + * 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. + * 3. 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 _ROUTED_H_ +#define _ROUTED_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 RIPv1 1 +#define RIPv2 2 +#ifndef RIPVERSION +#define RIPVERSION RIPv1 +#endif + +#define RIP_PORT 520 + +#if RIPVERSION == 1 +/* Note that this so called sockaddr has a 2-byte sa_family and no sa_len. + * It is not a UNIX sockaddr, but the shape of an address as defined + * in RIPv1. It is still defined to allow old versions of programs + * such as `gated` to use this file to define RIPv1. + */ +struct netinfo { + struct sockaddr rip_dst; /* destination net/host */ + u_int32_t rip_metric; /* cost of route */ +}; +#else +struct netinfo { + u_int16_t n_family; +#define RIP_AF_INET htons(AF_INET) +#define RIP_AF_UNSPEC 0 +#define RIP_AF_AUTH 0xffff + u_int16_t n_tag; /* optional in RIPv2 */ + u_int32_t n_dst; /* destination net or host */ +#define RIP_DEFAULT 0 + u_int32_t n_mask; /* netmask in RIPv2 */ + u_int32_t n_nhop; /* optional next hop in RIPv2 */ + u_int32_t n_metric; /* cost of route */ +}; +#endif + +/* RIPv2 authentication */ +struct netauth { + u_int16_t a_type; +#define RIP_AUTH_PW htons(2) /* password type */ + union { +#define RIP_AUTH_PW_LEN 16 + int8_t au_pw[RIP_AUTH_PW_LEN]; + } au; +}; + +struct rip { + u_int8_t rip_cmd; /* request/response */ + u_int8_t rip_vers; /* protocol version # */ + u_int16_t rip_res1; /* pad to 32-bit boundary */ + union { /* variable length... */ + struct netinfo ru_nets[1]; + int8_t ru_tracefile[1]; + struct netauth ru_auth[1]; + } 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 */ + +/* Gated extended RIP to include a "poll" command instead of using + * RIPCMD_REQUEST with (RIP_AF_UNSPEC, RIP_DEFAULT). RFC 1058 says + * command 5 is used by Sun Microsystems for its own purposes. + */ +#define RIPCMD_POLL 5 + +#define RIPCMD_MAX 6 + +#ifdef RIPCMDS +char *ripcmds[RIPCMD_MAX] = { + "#0", "REQUEST", "RESPONSE", "TRACEON", "TRACEOFF" +}; +#endif + +#define HOPCNT_INFINITY 16 +#define MAXPACKETSIZE 512 /* max broadcast size */ +#define NETS_LEN ((MAXPACKETSIZE-sizeof(struct rip)) \ + / sizeof(struct netinfo) +1) + +#define INADDR_RIP_GROUP __IPADDR(0xe0000009) /* 224.0.0.9 */ + + +/* 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, to + * "poison" the bad route. + */ +#define SUPPLY_INTERVAL 30 /* time to supply tables */ +#define MIN_WAITTIME 2 /* min sec until next flash updates */ +#define MAX_WAITTIME 5 /* max sec until flash update */ + +#define STALE_TIME 90 /* switch to a new gateway */ +#define EXPIRE_TIME 180 /* time to mark entry invalid */ +#define GARBAGE_TIME 240 /* time to garbage collect */ + +#endif /* !_ROUTED_H_ */ |