/* * Copyright (C) 1998 WIDE Project. * 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 project 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 PROJECT 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 PROJECT 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. *//* *  What we advertise.  *    A Hold Timer value of 4 minutes is suggested. See [Page 32]. */#define BGP_HOLDTIME            240    /*  sec *//* * How long to wait before retrying connect (should be multple of slot size) *//*#define BGPCONN_SHORT           32*/#define BGPCONN_SHORT           10     /*  sec */#define BGP_ADV_DELAY       200000     /* usec *//* * Minimum length of a BGP message is the length of the header.  If you * haven't got this, you haven't got anything. */#define BGP_HEADER_LEN          19#define BGP_HEADER_MARKER_LEN   16struct bgphdr {  u_char     bh_marker[BGP_HEADER_MARKER_LEN];  u_int16_t  bh_length;  u_int8_t   bh_type;};struct bgpoptparm {  u_int8_t     bop_type;  u_int8_t     bop_len;};#define BGP_PORT                179     /* Port number to use with BGP *//*   A message is processed only after it is entirely received.  The maximum   message size is 4096 octets.  All implementations are required to   support this maximum message size.         [draft-ietf-idr-bgp4-08.txt]*/#define BGPMAXPACKETSIZE       4096/* * BGP message types */#define BGP_OPEN        1               /* open message */#define BGP_UPDATE      2               /* update message */#define BGP_NOTIFY      3               /* notification message */#define BGP_KEEPALIVE   4               /* keepalive message */#define BGP_TYPE_VALID(a) (BGP_OPEN      <= (a) &&\			   BGP_KEEPALIVE >= (a))#define BGP_VERSION_4   4/* * BGP error processing is a little tedious.  The following are * the error codes/subcodes we use. */#define BGP_ERR_HEADER          1       /* message header error */#define BGP_ERR_OPEN            2       /* open message error */#define BGP_ERR_UPDATE          3       /* update message error */#define BGP_ERR_HOLDTIME        4       /* hold timer expired */#define BGP_ERR_FSM             5       /* finite state machine error */#define BGP_CEASE               6       /* cease message (not an error) *//* * The unspecified subcode is sent when we don't have anything better. */#define BGP_ERR_UNSPEC          0/* *   Message Header Error subcodes: */#define BGP_ERRHDR_UNSYNC       1     /* Connection Not Synchronized */#define BGP_ERRHDR_LENGTH       2     /* Bad Message Length */#define BGP_ERRHDR_TYPE         3     /* Bad Message Type *//* *   OPEN Message Error subcodes: */#define BGP_ERROPN_VERSION      1       /* Unsupported Version number */#define BGP_ERROPN_AS           2       /* Bad peer AS */#define BGP_ERROPN_BGPID        3       /* Bad BGP Identifier */#define BGP_ERROPN_OPTION       4       /* Unsupported Optional Parameter */#define BGP_ERROPN_AUTH         5       /* Authentication Failure */#define BGP_ERROPN_BADHOLDTIME  6       /* Unacceptable Hold Time */#define BGP_ERROPN_CAPABILITY   7       /* Unsupported Capability *//* *   UPDATE Message Error subcodes: */#define BGP_ERRUPD_ATTRLIST     1      /* Malformed Attribute List */#define BGP_ERRUPD_UNKNOWN      2      /* Unrecognized Well-known Attribute */#define BGP_ERRUPD_MISSING      3      /* Missing Well-known Attribute */#define BGP_ERRUPD_FLAGS        4      /* Attribute Flags Error */#define BGP_ERRUPD_LENGTH       5      /* Attribute Length Error */#define BGP_ERRUPD_ORIGIN       6      /* Invalid ORIGIN Attribute */#define BGP_ERRUPD_ASLOOP       7      /* AS Routing Loop */#define BGP_ERRUPD_NEXTHOP      8      /* Invalid NEXT_HOP Attribute */#define BGP_ERRUPD_OPTATTR      9      /* Optional Attribute Error */#define BGP_ERRUPD_BADNET       10     /* Invalid Network Field */#define BGP_ERRUPD_ASPATH       11     /* Malformed AS_PATH *//* * Protocol States */#define BGPSTATE_IDLE           1       /* idle state - ignore everything */#define BGPSTATE_CONNECT        2       /* connect state - trying to connect */#define BGPSTATE_ACTIVE         3       /* waiting for a connection */#define BGPSTATE_OPENSENT       4       /* open packet has been sent */#define BGPSTATE_OPENCONFIRM    5       /* waiting for a keepalive or notify */#define BGPSTATE_ESTABLISHED    6       /* connection has been established *//* *   Optional Parameter Type in OPEN message */#define BGP_OPTPARAM_AUTH       1       /* Authentication Information */#define BGP_OPTPARAM_CAPA       2       /* Capabilities */