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/* $OpenBSD: mrt.h,v 1.6 2004/01/02 00:13:32 deraadt Exp $ */
/*
* Copyright (c) 2003 Claudio Jeker <cjeker@diehard.n-r-g.com>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#ifndef __MRT_H__
#define __MRT_H__
#include "bgpd.h"
/*
* MRT binary packet format as used by zebra.
* For more info see:
* http://www.mrtd.net/mrt_doc/html/mrtprogrammer.html#_Toc412283890
* or
* http://www.mrtd.net/mrt_doc/PDF/mrtprogrammer.pdf (Chapter 12)
* and
* http://www.quagga.net/docs/docs-multi/Packet-Binary-Dump-Format.html
*/
struct mrt_header {
u_int32_t timestamp;
u_int16_t type;
u_int16_t subtype;
u_int32_t length; /* length of packet including header */
};
enum MRT_MSG_TYPES {
MSG_NULL,
MSG_START, /* 1 sender is starting up */
MSG_DIE, /* 2 receiver should shut down */
MSG_I_AM_DEAD, /* 3 sender is shutting down */
MSG_PEER_DOWN, /* 4 sender's peer is down */
MSG_PROTOCOL_BGP, /* 5 msg is a BGP packet */
MSG_PROTOCOL_RIP, /* 6 msg is a RIP packet */
MSG_PROTOCOL_IDRP, /* 7 msg is an IDRP packet */
MSG_PROTOCOL_RIPNG, /* 8 msg is a RIPNG packet */
MSG_PROTOCOL_BGP4PLUS, /* 9 msg is a BGP4+ packet */
MSG_PROTOCOL_BGP4PLUS1, /* 10 msg is a BGP4+ (draft 01) packet */
MSG_PROTOCOL_OSPF, /* 11 msg is an OSPF packet */
MSG_TABLE_DUMP, /* 12 routing table dump */
MSG_PROTOCOL_BGP4MP=16 /* 16 zebras own packet format */
};
#define MRT_HEADER_SIZE sizeof(struct mrt_header)
#define MRT_DUMP_HEADER_SIZE 22 /* sizeof(struct mrt_dump_v4_header) */
#define MRT_BGP4MP_HEADER_SIZE \
sizeof(struct mrt_bgp4mp_header) + \
sizeof(struct mrt_bgp4mp_IPv4)
/*
* format for routing table dumps in mrt format.
* Type MSG_TABLE_DUMP and subtype is address family (IPv4)
*/
struct mrt_dump_v4_header {
u_int16_t view; /* normally 0 */
u_int16_t seqnum; /* simple counter for this dump */
u_int32_t prefix;
u_int8_t prefixlen;
u_int8_t status; /* default seems to be 1 */
u_int32_t originated; /* seems to be time of last update */
u_int32_t peer_ip;
u_int16_t peer_as;
u_int16_t attr_len;
/* bgp attributes attr_len bytes long */
};
/*
* format for routing table dumps in mrt format.
* Type MSG_TABLE_DUMP and subtype is address family (IPv6)
*/
struct mrt_dump_v6_header {
u_int16_t view; /* normally 0 */
u_int16_t seqnum; /* simple counter for this dump */
u_int32_t prefix[4];
u_int8_t prefixlen;
u_int8_t status; /* default seems to be 1 */
u_int32_t originated; /* seems to be time of last update */
u_int32_t peer_ip[4];
u_int16_t peer_as;
u_int16_t attr_len;
/* bgp attributes attr_len bytes long */
};
/*
* Main zebra dump format is in MSG_PROTOCOL_BGP4MP exceptions are table dumps
* that are normaly saved as MSG_TABLE_DUMP.
* In most cases this is the format to choose to dump updates et al.
*/
enum MRT_BGP4MP_TYPES {
BGP4MP_STATE_CHANGE=0, /* state change */
BGP4MP_MESSAGE=1, /* bgp message */
BGP4MP_ENTRY=2, /* table dumps */
BGP4MP_SNAPSHOT=3
};
/* if type PROTOCOL_BGP4MP and
* subtype BGP4MP_STATE_CHANGE or BGP4MP_MESSAGE */
struct mrt_bgp4mp_header {
u_int16_t source_as;
u_int16_t dest_as;
u_int16_t if_index;
u_int16_t afi;
/*
* Next comes either a struct mrt_bgp4mp_IPv4 or a
* struct mrt_bgp4mp_IPv6 dependent on afi type.
*
* Last but not least the payload.
*/
};
/* if afi = 4 */
struct mrt_bgp4mp_IPv4 {
u_int32_t source_ip;
u_int32_t dest_ip;
};
/* if afi = 6 */
struct mrt_bgp4mp_IPv6 {
u_int32_t source_ip[4];
u_int32_t dest_ip[4];
};
/*
* payload of a BGP4MP_STATE_CHANGE packet
*/
struct mrt_bgp4mp_state_data {
u_int16_t old_state; /* as in RFC 1771 */
u_int16_t new_state;
};
/*
* The payload of a BGP4MP_MESSAGE is the full bgp message with header.
*/
/* if type PROTOCOL_BGP4MP, subtype BGP4MP_ENTRY */
struct mrt_bgp4mp_entry_header {
u_int16_t view;
u_int16_t status;
u_int32_t originated; /* time last change */
u_int16_t afi;
u_int8_t safi;
u_int8_t nexthop_len;
/*
* u_int32_t nexthop for IPv4 or
* u_int32_t nexthop[4] for IPv6
* u_int8_t prefixlen
* variable prefix (prefixlen bits long rounded to the next octet)
* u_int16_t attrlen
* variable length bgp attributes attrlen bytes long
*/
};
/*
* What is this for?
* if type MSG_PROTOCOL_BGP and subtype MSG_BGP_SYNC OR
* if type MSG_PROTOCOL_BGP4MP and subtype BGP4MP_SNAPSHOT
*/
struct mrt_bgp_sync_header {
u_int16_t view;
char filename[2]; /* variable */
};
/*
* OLD MRT message headers. These structs are here for completion but
* will not be used to generate dumps. It seems that nobody uses those.
*/
/*
* Only for bgp messages (type 5, 9 and 10)
* Nota bene for bgp dumps MSG_PROTOCOL_BGP4MP should be used.
*/
enum MRT_BGP_TYPES {
MSG_BGP_NULL,
MSG_BGP_UPDATE, /* raw update packet (contains both withdraws
and announcements) */
MSG_BGP_PREF_UPDATE, /* tlv preferences followed by raw update */
MSG_BGP_STATE_CHANGE, /* state change */
MSG_BGP_SYNC
};
/* if type MSG_PROTOCOL_BGP and subtype MSG_BGP_UPDATE */
struct mrt_bgp_update_header {
u_int16_t source_as;
u_int32_t source_ip;
u_int16_t dest_as;
u_int32_t dest_ip;
/* bgp update packet */
};
/* if type MSG_PROTOCOL_BGP4PLUS and subtype MSG_BGP_UPDATE */
struct mrt_bgp_update_plus_header {
u_int16_t source_as;
u_int32_t source_ip[4];
u_int16_t dest_as;
u_int32_t dest_ip[4];
/* bgp update packet */
};
/* for subtype MSG_BGP_STATECHANGE (for all BGP types ???) */
struct mrt_bgp_state_header {
u_int16_t source_as;
u_int32_t source_ip[4];
u_int16_t old_state; /* as in RFC 1771 ??? */
u_int16_t new_state;
};
/* pseudo predeclarations */
struct prefix;
struct pt_entry;
struct mrt {
struct msgbuf *msgbuf;
u_int32_t id;
};
/* prototypes */
int mrt_dump_bgp_msg(struct mrt *, void *, u_int16_t, int,
struct peer_config *, struct bgpd_config *);
void mrt_clear_seq(void);
void mrt_dump_upcall(struct pt_entry *, void *);
int mrt_state(struct mrtdump_config *, enum imsg_type, struct imsgbuf *);
int mrt_alrm(struct mrt_config *, struct imsgbuf *);
int mrt_usr1(struct mrt_config *, struct imsgbuf *);
#endif
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