bgp.h revision 3f54fd611f536639ec30dd53c48e5ec1897cc7d9
/***********************************************************************
* *
* This software is part of the ast package *
* Copyright (c) 2000-2012 AT&T Intellectual Property *
* and is licensed under the *
* Eclipse Public License, Version 1.0 *
* by AT&T Intellectual Property *
* *
* A copy of the License is available at *
* http://www.eclipse.org/org/documents/epl-v10.html *
* (with md5 checksum b35adb5213ca9657e911e9befb180842) *
* *
* Information and Software Systems Research *
* AT&T Research *
* Florham Park NJ *
* *
* Glenn Fowler <gsf@research.att.com> *
* Phong Vo <kpv@research.att.com> *
* *
***********************************************************************/
#pragma prototyped
/*
* bgp data interface
*
* Glenn Fowler
* AT&T Research
*/
#ifndef _BGP_H
#define _BGP_H
#include <ast_common.h>
#include <ip6.h>
#define BGP_VERSION 20120515L /* interface version */
#define BGP_SET16 0xffff /* as16 path set marker */
#define BGP_SET32 0xffffffff /* as32 path set marker */
/*
* attributes (even, 1 bit set)
*/
#define BGP_MESSAGE (1<<1)
#define BGP_atomic (1<<2)
#define BGP_best (1<<3)
#define BGP_damped (1<<4)
#define BGP_history (1<<5)
#define BGP_internal (1<<6)
#define BGP_ipv6 (1<<7)
#define BGP_rib_failure (1<<8)
#define BGP_slot (1<<9)
#define BGP_stale (1<<10)
#define BGP_suppressed (1<<11)
#define BGP_valid (1<<12)
#define BGP_PART (1<<15)
/*
* indices (odd, 2 bits set)
*/
#define BGP_afi ((1<<1)|1)
#define BGP_agg_addr ((2<<1)|1)
#define BGP_agg_addr32 ((3<<1)|1)
#define BGP_agg_addr32v4 ((4<<1)|1)
#define BGP_agg_addr32v6 ((5<<1)|1)
#define BGP_agg_addrv4 ((6<<1)|1)
#define BGP_agg_addrv6 ((7<<1)|1)
#define BGP_agg_as ((8<<1)|1)
#define BGP_agg_as16 ((9<<1)|1)
#define BGP_agg_as32 ((10<<1)|1)
#define BGP_bits ((11<<1)|1)
#define BGP_bitsv4 ((12<<1)|1)
#define BGP_bitsv6 ((13<<1)|1)
#define BGP_cluster ((14<<1)|1)
#define BGP_community ((15<<1)|1)
#define BGP_dpa_addr ((16<<1)|1)
#define BGP_dpa_addrv4 ((17<<1)|1)
#define BGP_dpa_addrv6 ((18<<1)|1)
#define BGP_dpa_as ((19<<1)|1)
#define BGP_dpa_as16 ((20<<1)|1)
#define BGP_dpa_as32 ((21<<1)|1)
#define BGP_dst_addr ((22<<1)|1)
#define BGP_dst_addrv4 ((23<<1)|1)
#define BGP_dst_addrv6 ((24<<1)|1)
#define BGP_dst_as ((25<<1)|1)
#define BGP_dst_as16 ((26<<1)|1)
#define BGP_dst_as32 ((27<<1)|1)
#define BGP_extended ((28<<1)|1)
#define BGP_flags ((29<<1)|1)
#define BGP_hop ((30<<1)|1)
#define BGP_hopv4 ((31<<1)|1)
#define BGP_hopv6 ((32<<1)|1)
#define BGP_id ((33<<1)|1)
#define BGP_key ((34<<1)|1)
#define BGP_label ((35<<1)|1)
#define BGP_labels ((36<<1)|1)
#define BGP_local ((37<<1)|1)
#define BGP_med ((38<<1)|1)
#define BGP_message ((39<<1)|1)
#define BGP_mvpn ((40<<1)|1)
#define BGP_new_state ((41<<1)|1)
#define BGP_old_state ((42<<1)|1)
#define BGP_origin ((43<<1)|1)
#define BGP_originator ((44<<1)|1)
#define BGP_path ((45<<1)|1)
#define BGP_path16 ((46<<1)|1)
#define BGP_path32 ((47<<1)|1)
#define BGP_prefix ((48<<1)|1)
#define BGP_prefixv4 ((49<<1)|1)
#define BGP_prefixv6 ((50<<1)|1)
#define BGP_rd_addr ((51<<1)|1)
#define BGP_rd_as ((52<<1)|1)
#define BGP_rd_number ((53<<1)|1)
#define BGP_rd_type ((54<<1)|1)
#define BGP_safi ((55<<1)|1)
#define BGP_src_addr ((56<<1)|1)
#define BGP_src_addrv4 ((57<<1)|1)
#define BGP_src_addrv6 ((58<<1)|1)
#define BGP_src_as ((59<<1)|1)
#define BGP_src_as16 ((60<<1)|1)
#define BGP_src_as32 ((61<<1)|1)
#define BGP_stamp ((62<<1)|1)
#define BGP_time ((63<<1)|1)
#define BGP_type ((64<<1)|1)
#define BGP_unknown ((65<<1)|1)
#define BGP_usec ((66<<1)|1)
#define BGP_weight ((67<<1)|1)
#define BGP_LAST 67
#define BGP_INDEX(x) (((x)>>1)-1)
/*
* field set bits
*/
#define BGP_SET_agg_addr32v4 (1<<0)
#define BGP_SET_agg_addr32v6 (1<<1)
#define BGP_SET_agg_addrv4 (1<<2)
#define BGP_SET_agg_addrv6 (1<<3)
#define BGP_SET_cluster (1<<4)
#define BGP_SET_community (1<<5)
#define BGP_SET_dpa_addrv4 (1<<6)
#define BGP_SET_dpa_addrv6 (1<<7)
#define BGP_SET_dst_addrv4 (1<<8)
#define BGP_SET_dst_addrv6 (1<<9)
#define BGP_SET_extended (1<<10)
#define BGP_SET_hopv4 (1<<11)
#define BGP_SET_hopv6 (1<<12)
#define BGP_SET_mvpn (1<<13)
#define BGP_SET_originatorv6 (1<<14)
#define BGP_SET_path16 (1L<<15)
#define BGP_SET_path32 (1L<<16)
#define BGP_SET_prefixv4 (1L<<17)
#define BGP_SET_prefixv6 (1L<<18)
#define BGP_SET_src_addrv4 (1L<<19)
#define BGP_SET_src_addrv6 (1L<<20)
#define BGP_SET_unknown (1L<<21)
/*
* BGP_type
*/
#define BGP_TYPE_announce 'A'
#define BGP_TYPE_keepalive 'K'
#define BGP_TYPE_notification 'N'
#define BGP_TYPE_open 'O'
#define BGP_TYPE_state_change 'S'
#define BGP_TYPE_table_dump 'T'
#define BGP_TYPE_withdraw 'W'
/*
* BGP_origin
*/
#define BGP_ORIGIN_incomplete '?'
#define BGP_ORIGIN_egp 'e'
#define BGP_ORIGIN_igp 'i'
#define BGPCLUSTER(r) ((Bgpnum_t*)((r)->data+(r)->cluster.offset))
#define BGPCOMMUNITY(r) ((Bgpasn_t*)((r)->data+(r)->community.offset))
#define BGPEXTENDED(r) ((Bgpasn_t*)((r)->data+(r)->extended.offset))
#define BGPLABELS(r) ((Bgpasn_t*)((r)->data+(r)->labels.offset))
#define BGPPATH(r) ((Bgpasn_t*)((r)->data+(r)->path.offset))
#define BGPPATH32(r) ((Bgpnum_t*)((r)->data+(r)->path32.offset))
union Bgpaddr_u; typedef union Bgpaddr_u Bgpaddr_t;
struct Bgproute_s; typedef struct Bgproute_s Bgproute_t;
struct Bgpvec_s; typedef struct Bgpvec_s Bgpvec_t;
typedef uint16_t Bgpasn_t;
typedef uint32_t Bgpnum_t;
struct Bgpvec_s /* vector data */
{
Bgpasn_t offset; /* Bgproute_t.data[] offset */
Bgpasn_t size; /* # elements */
Bgpasn_t maxsize; /* max allocated size */
Bgpasn_t elements; /* sizeof() elements */
Bgpasn_t flags; /* data-specific flags */
Bgpasn_t attr; /* data-specific attribute */
};
union Bgpaddr_u /* ipv4/ipv6 address */
{
Bgpnum_t v4; /* ipv4 addr */
unsigned char v6[16]; /* ipv6 addr */
};
/* BGP_TYPE_state_change */
#define old_state agg_as
#define new_state dpa_as
/* BGP_TYPE_open */
#define open_version med
#define open_as agg_as
#define open_hold dpa_as
#define open_id originator.v4
#define open_size local
/* BGP_TYPE_notification */
#define note_code agg_as
#define note_subcode dpa_as
#define note_size local
struct Bgproute_s
{
/* 128/32 bit members */
Bgpaddr_t addr; /* prefix address */
Bgpaddr_t agg_addr32; /* aggregator as32 addr */
Bgpaddr_t agg_addr; /* aggregator addr */
Bgpaddr_t dpa_addr; /* dpa addr */
Bgpaddr_t dst_addr; /* destination addr */
Bgpaddr_t hop; /* next hop addr */
Bgpaddr_t originator; /* originator addr */
Bgpaddr_t rd_addr; /* nlri rd addr */
Bgpaddr_t src_addr; /* source addr */
/* 32 bit members */
Bgpnum_t size; /* actual record size */
Bgpnum_t local; /* local preference */
Bgpnum_t med; /* med */
Bgpnum_t weight; /* router proprietary weight */
Bgpnum_t time; /* packet event time stamp */
Bgpnum_t usec; /* packet event time stamp usec */
Bgpnum_t stamp; /* data time stamp */
Bgpnum_t message; /* message group index */
Bgpnum_t agg_as32; /* aggregator as32 */
Bgpnum_t dpa_as32; /* dpa as32 */
Bgpnum_t dst_as32; /* destination as32 */
Bgpnum_t src_as32; /* source as32 */
Bgpnum_t set; /* BGP_SET_* bitmask */
Bgpnum_t label; /* nlri label */
Bgpnum_t rd_as; /* nlri rd as number */
Bgpnum_t rd_number; /* nlri rd assigned number */
Bgpnum_t flags; /* aux flags */
Bgpnum_t id; /* aux id */
/* 16 bit members */
Bgpvec_t path; /* as path */
Bgpvec_t cluster; /* clusters */
Bgpvec_t community; /* communities */
Bgpvec_t extended; /* extended communities */
Bgpvec_t labels; /* NLRI labels */
Bgpvec_t path32; /* as32 path */
Bgpvec_t unknown; /* unknown attributes */
Bgpvec_t ped; /* pe discriminator addr.label */
Bgpasn_t attr; /* BGP_[a-z]* route attributes */
Bgpasn_t agg_as; /* aggregator as */
Bgpasn_t dpa_as; /* dpa as */
Bgpasn_t dst_as; /* destination as */
Bgpasn_t src_as; /* source as */
/* 8 bit members */
unsigned char bits; /* prefix bits */
unsigned char type; /* BGP_TYPE_* */
unsigned char origin; /* BGP_ORIGIN_* */
unsigned char blocks; /* # blocks for this record */
unsigned char afi; /* announce afi */
unsigned char safi; /* announce subsequent afi */
unsigned char p1; /* parameter 1 */
unsigned char rd_type; /* nlri rd type */
/* unaligned fixed buffer members */
unsigned char prefixv6[17]; /* prefix */
char pad[5]; /* pad to 8 byte boundary */
char data[1704]; /* vector data (round to 2K) */
};
#endif