bird/proto/bgp/config.Y

/*
 *	BIRD -- Border Gateway Protocol Configuration
 *
 *	(c) 2000 Martin Mares <mj@ucw.cz>
 *
 *	Can be freely distributed and used under the terms of the GNU GPL.
 */

CF_HDR

#include "proto/bgp/bgp.h"

CF_DEFINES

#define BGP_CFG ((struct bgp_config *) this_proto)

CF_DECLS

CF_KEYWORDS(BGP, LOCAL, NEIGHBOR, AS, HOLD, TIME, CONNECT, RETRY, KEEPALIVE,
	MULTIHOP, STARTUP, VIA, NEXT, HOP, SELF, DEFAULT, PATH, METRIC,
	ERROR, START, DELAY, FORGET, WAIT, DISABLE, AFTER,
	BGP_PATH, BGP_LOCAL_PREF, BGP_MED, BGP_ORIGIN, BGP_NEXT_HOP,
	BGP_ATOMIC_AGGR, BGP_AGGREGATOR, BGP_COMMUNITY, SOURCE, ADDRESS)

CF_GRAMMAR

CF_ADDTO(proto, bgp_proto '}' { bgp_check(BGP_CFG); } )

bgp_proto_start: proto_start BGP {
     this_proto = proto_config_new(&proto_bgp, sizeof(struct bgp_config));
     this_proto->preference = DEF_PREF_BGP;
     BGP_CFG->hold_time = 240;
     BGP_CFG->connect_retry_time = 120;
     BGP_CFG->initial_hold_time = 240;
     BGP_CFG->default_med = ~0;		/* RFC 1771 doesn't specify this, draft-09 says ~0 */
     BGP_CFG->compare_path_lengths = 1;
     BGP_CFG->start_delay_time = 5;
     BGP_CFG->error_amnesia_time = 300;
     BGP_CFG->error_delay_time_min = 60;
     BGP_CFG->error_delay_time_max = 300;
 }
 ;

bgp_proto:
   bgp_proto_start proto_name '{'
 | bgp_proto proto_item ';'
 | bgp_proto LOCAL AS expr ';' { BGP_CFG->local_as = $4; }
 | bgp_proto NEIGHBOR ipa AS expr ';' {
     if (ipa_nonzero(BGP_CFG->remote_ip)) cf_error("Only one neighbor per BGP instance is allowed");

     BGP_CFG->remote_ip = $3;
     BGP_CFG->remote_as = $5;
   }
 | bgp_proto HOLD TIME expr ';' { BGP_CFG->hold_time = $4; }
 | bgp_proto STARTUP HOLD TIME expr ';' { BGP_CFG->initial_hold_time = $5; }
 | bgp_proto CONNECT RETRY TIME expr ';' { BGP_CFG->connect_retry_time = $5; }
 | bgp_proto KEEPALIVE TIME expr ';' { BGP_CFG->keepalive_time = $4; }
 | bgp_proto MULTIHOP expr VIA ipa ';' { BGP_CFG->multihop = $3; BGP_CFG->multihop_via = $5; }
 | bgp_proto NEXT HOP SELF ';' { BGP_CFG->next_hop_self = 1; }
 | bgp_proto PATH METRIC bool ';' { BGP_CFG->compare_path_lengths = $4; }
 | bgp_proto DEFAULT BGP_MED expr ';' { BGP_CFG->default_med = $4; }
 | bgp_proto DEFAULT BGP_LOCAL_PREF expr ';' { BGP_CFG->default_local_pref = $4; }
 | bgp_proto SOURCE ADDRESS ipa ';' { BGP_CFG->source_addr = $4; }
 | bgp_proto START DELAY TIME expr ';' { BGP_CFG->start_delay_time = $5; }
 | bgp_proto ERROR FORGET TIME expr ';' { BGP_CFG->error_amnesia_time = $5; } 
 | bgp_proto ERROR WAIT TIME expr ',' expr ';' { BGP_CFG->error_delay_time_min = $5; BGP_CFG->error_delay_time_max = $7; }
 | bgp_proto DISABLE AFTER ERROR bool ';' { BGP_CFG->disable_after_error = $5; }
 ;

CF_ADDTO(dynamic_attr, BGP_PATH
	{ $$ = f_new_dynamic_attr(EAF_TYPE_AS_PATH, T_PATH, EA_CODE(EAP_BGP, BA_AS_PATH)); })
CF_ADDTO(dynamic_attr, BGP_LOCAL_PREF
	{ $$ = f_new_dynamic_attr(EAF_TYPE_INT, T_INT, EA_CODE(EAP_BGP, BA_LOCAL_PREF)); })
CF_ADDTO(dynamic_attr, BGP_MED
	{ $$ = f_new_dynamic_attr(EAF_TYPE_INT, T_INT, EA_CODE(EAP_BGP, BA_MULTI_EXIT_DISC)); })
CF_ADDTO(dynamic_attr, BGP_ORIGIN
	{ $$ = f_new_dynamic_attr(EAF_TYPE_INT, T_ENUM_BGP_ORIGIN, EA_CODE(EAP_BGP, BA_ORIGIN)); })
CF_ADDTO(dynamic_attr, BGP_NEXT_HOP
	{ $$ = f_new_dynamic_attr(EAF_TYPE_IP_ADDRESS, T_IP, EA_CODE(EAP_BGP, BA_NEXT_HOP)); })
CF_ADDTO(dynamic_attr, BGP_ATOMIC_AGGR
	{ $$ = f_new_dynamic_attr(EAF_TYPE_OPAQUE, T_ENUM_EMPTY, EA_CODE(EAP_BGP, BA_ATOMIC_AGGR)); })
CF_ADDTO(dynamic_attr, BGP_AGGREGATOR
	{ $$ = f_new_dynamic_attr(EAF_TYPE_INT, T_INT, EA_CODE(EAP_BGP, BA_AGGREGATOR)); })
CF_ADDTO(dynamic_attr, BGP_COMMUNITY
	{ $$ = f_new_dynamic_attr(EAF_TYPE_INT_SET, T_CLIST, EA_CODE(EAP_BGP, BA_COMMUNITY)); })

CF_ENUM(T_ENUM_BGP_ORIGIN, ORIGIN_, IGP, EGP, INCOMPLETE)

CF_CODE

CF_END