ef57b70fa5
Covers IPv4/VPNv4 routes with IPv6 next hop (RFC 5549), IPv6 routes with IPv4 next hop (RFC 4798) and VPNv6 routes with IPv4 next hop (RFC 4659). Unfortunately it also makes next hop hooks more messy. Each BGP channel now could have two IGP tables, one for IPv4 next hops, the other for IPv6 next hops.
241 lines
9.8 KiB
Text
241 lines
9.8 KiB
Text
/*
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* BIRD -- Border Gateway Protocol Configuration
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*
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* (c) 2000 Martin Mares <mj@ucw.cz>
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*
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* Can be freely distributed and used under the terms of the GNU GPL.
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*/
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CF_HDR
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#include "proto/bgp/bgp.h"
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CF_DEFINES
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#define BGP_CFG ((struct bgp_config *) this_proto)
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#define BGP_CC ((struct bgp_channel_config *) this_channel)
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CF_DECLS
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CF_KEYWORDS(BGP, LOCAL, NEIGHBOR, AS, HOLD, TIME, CONNECT, RETRY, KEEPALIVE,
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MULTIHOP, STARTUP, VIA, NEXT, HOP, SELF, DEFAULT, PATH, METRIC, ERROR,
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START, DELAY, FORGET, WAIT, ENABLE, DISABLE, AFTER, BGP_PATH,
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BGP_LOCAL_PREF, BGP_MED, BGP_ORIGIN, BGP_NEXT_HOP, BGP_ATOMIC_AGGR,
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BGP_AGGREGATOR, BGP_COMMUNITY, BGP_EXT_COMMUNITY, BGP_LARGE_COMMUNITY,
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SOURCE, ADDRESS, PASSWORD, RR, RS, CLIENT, CLUSTER, ID, AS4, ADVERTISE,
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IPV4, CAPABILITIES, LIMIT, PASSIVE, PREFER, OLDER, MISSING, LLADDR,
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DROP, IGNORE, ROUTE, REFRESH, INTERPRET, COMMUNITIES, BGP_ORIGINATOR_ID,
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BGP_CLUSTER_LIST, IGP, TABLE, GATEWAY, DIRECT, RECURSIVE, MED, TTL,
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SECURITY, DETERMINISTIC, SECONDARY, ALLOW, BFD, ADD, PATHS, RX, TX,
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GRACEFUL, RESTART, AWARE, CHECK, LINK, PORT, EXTENDED, MESSAGES, SETKEY,
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STRICT, BIND, CONFEDERATION, MEMBER, MULTICAST, FLOW4, FLOW6)
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%type <i32> bgp_afi
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CF_GRAMMAR
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CF_ADDTO(proto, bgp_proto '}' )
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bgp_proto_start: proto_start BGP {
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this_proto = proto_config_new(&proto_bgp, $1);
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BGP_CFG->local_port = BGP_PORT;
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BGP_CFG->remote_port = BGP_PORT;
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BGP_CFG->multihop = -1; /* undefined */
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BGP_CFG->hold_time = 240;
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BGP_CFG->initial_hold_time = 240;
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BGP_CFG->compare_path_lengths = 1;
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BGP_CFG->igp_metric = 1;
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BGP_CFG->connect_delay_time = 5;
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BGP_CFG->connect_retry_time = 120;
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BGP_CFG->error_amnesia_time = 300;
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BGP_CFG->error_delay_time_min = 60;
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BGP_CFG->error_delay_time_max = 300;
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BGP_CFG->enable_refresh = 1;
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BGP_CFG->enable_as4 = 1;
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BGP_CFG->capabilities = 2;
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BGP_CFG->interpret_communities = 1;
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BGP_CFG->default_local_pref = 100;
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BGP_CFG->gr_mode = BGP_GR_AWARE;
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BGP_CFG->gr_time = 120;
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BGP_CFG->setkey = 1;
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}
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;
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bgp_loc_opts:
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/* empty */
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| bgp_loc_opts PORT expr { BGP_CFG->local_port = $3; if (($3<1) || ($3>65535)) cf_error("Invalid port number"); }
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| bgp_loc_opts AS expr { BGP_CFG->local_as = $3; }
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;
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bgp_nbr_opts:
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/* empty */
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| bgp_nbr_opts PORT expr { BGP_CFG->remote_port = $3; if (($3<1) || ($3>65535)) cf_error("Invalid port number"); }
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| bgp_nbr_opts AS expr { BGP_CFG->remote_as = $3; }
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;
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bgp_proto:
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bgp_proto_start proto_name '{'
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| bgp_proto proto_item ';'
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| bgp_proto bgp_proto_channel ';'
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| bgp_proto LOCAL bgp_loc_opts ';'
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| bgp_proto LOCAL ipa ipa_scope bgp_loc_opts ';' {
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BGP_CFG->local_ip = $3;
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if ($4) BGP_CFG->iface = $4;
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}
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| bgp_proto NEIGHBOR bgp_nbr_opts ';'
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| bgp_proto NEIGHBOR ipa ipa_scope bgp_nbr_opts ';' {
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if (ipa_nonzero(BGP_CFG->remote_ip))
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cf_error("Only one neighbor per BGP instance is allowed");
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BGP_CFG->remote_ip = $3;
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if ($4) BGP_CFG->iface = $4;
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}
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| bgp_proto INTERFACE TEXT ';' { BGP_CFG->iface = if_get_by_name($3); }
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| bgp_proto RR CLUSTER ID idval ';' { BGP_CFG->rr_cluster_id = $5; }
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| bgp_proto RR CLIENT bool ';' { BGP_CFG->rr_client = $4; }
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| bgp_proto RS CLIENT bool ';' { BGP_CFG->rs_client = $4; }
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| bgp_proto CONFEDERATION expr ';' { BGP_CFG->confederation = $3; }
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| bgp_proto CONFEDERATION MEMBER bool ';' { BGP_CFG->confederation_member = $4; }
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| bgp_proto HOLD TIME expr ';' { BGP_CFG->hold_time = $4; }
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| bgp_proto STARTUP HOLD TIME expr ';' { BGP_CFG->initial_hold_time = $5; }
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| bgp_proto DIRECT ';' { BGP_CFG->multihop = 0; }
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| bgp_proto MULTIHOP ';' { BGP_CFG->multihop = 64; }
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| bgp_proto MULTIHOP expr ';' { BGP_CFG->multihop = $3; if (($3<1) || ($3>255)) cf_error("Multihop must be in range 1-255"); }
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| bgp_proto STRICT BIND bool ';' { BGP_CFG->strict_bind = $4; }
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| bgp_proto PATH METRIC bool ';' { BGP_CFG->compare_path_lengths = $4; }
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| bgp_proto MED METRIC bool ';' { BGP_CFG->med_metric = $4; }
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| bgp_proto IGP METRIC bool ';' { BGP_CFG->igp_metric = $4; }
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| bgp_proto PREFER OLDER bool ';' { BGP_CFG->prefer_older = $4; }
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| bgp_proto DETERMINISTIC MED bool ';' { BGP_CFG->deterministic_med = $4; }
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| bgp_proto DEFAULT BGP_MED expr ';' { BGP_CFG->default_med = $4; }
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| bgp_proto DEFAULT BGP_LOCAL_PREF expr ';' { BGP_CFG->default_local_pref = $4; }
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| bgp_proto SOURCE ADDRESS ipa ';' { BGP_CFG->local_ip = $4; }
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| bgp_proto START DELAY TIME expr ';' { BGP_CFG->connect_delay_time = $5; log(L_WARN "%s: Start delay time option is deprecated, use connect delay time", this_proto->name); }
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| bgp_proto CONNECT DELAY TIME expr ';' { BGP_CFG->connect_delay_time = $5; }
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| bgp_proto CONNECT RETRY TIME expr ';' { BGP_CFG->connect_retry_time = $5; }
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| bgp_proto KEEPALIVE TIME expr ';' { BGP_CFG->keepalive_time = $4; }
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| bgp_proto ERROR FORGET TIME expr ';' { BGP_CFG->error_amnesia_time = $5; }
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| bgp_proto ERROR WAIT TIME expr ',' expr ';' { BGP_CFG->error_delay_time_min = $5; BGP_CFG->error_delay_time_max = $7; }
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| bgp_proto DISABLE AFTER ERROR bool ';' { BGP_CFG->disable_after_error = $5; }
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| bgp_proto ENABLE ROUTE REFRESH bool ';' { BGP_CFG->enable_refresh = $5; }
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| bgp_proto ENABLE AS4 bool ';' { BGP_CFG->enable_as4 = $4; }
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| bgp_proto ENABLE EXTENDED MESSAGES bool ';' { BGP_CFG->enable_extended_messages = $5; }
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| bgp_proto CAPABILITIES bool ';' { BGP_CFG->capabilities = $3; }
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| bgp_proto PASSWORD text ';' { BGP_CFG->password = $3; }
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| bgp_proto SETKEY bool ';' { BGP_CFG->setkey = $3; }
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| bgp_proto PASSIVE bool ';' { BGP_CFG->passive = $3; }
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| bgp_proto INTERPRET COMMUNITIES bool ';' { BGP_CFG->interpret_communities = $4; }
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| bgp_proto ALLOW LOCAL AS ';' { BGP_CFG->allow_local_as = -1; }
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| bgp_proto ALLOW LOCAL AS expr ';' { BGP_CFG->allow_local_as = $5; }
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| bgp_proto GRACEFUL RESTART bool ';' { BGP_CFG->gr_mode = $4; }
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| bgp_proto GRACEFUL RESTART AWARE ';' { BGP_CFG->gr_mode = BGP_GR_AWARE; }
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| bgp_proto GRACEFUL RESTART TIME expr ';' { BGP_CFG->gr_time = $5; }
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| bgp_proto TTL SECURITY bool ';' { BGP_CFG->ttl_security = $4; }
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| bgp_proto CHECK LINK bool ';' { BGP_CFG->check_link = $4; }
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| bgp_proto BFD bool ';' { BGP_CFG->bfd = $3; cf_check_bfd($3); }
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;
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bgp_afi:
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IPV4 { $$ = BGP_AF_IPV4; }
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| IPV6 { $$ = BGP_AF_IPV6; }
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| IPV4 MULTICAST { $$ = BGP_AF_IPV4_MC; }
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| IPV6 MULTICAST { $$ = BGP_AF_IPV6_MC; }
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| IPV4 MPLS { $$ = BGP_AF_IPV4_MPLS; }
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| IPV6 MPLS { $$ = BGP_AF_IPV6_MPLS; }
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| VPN4 MPLS { $$ = BGP_AF_VPN4_MPLS; }
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| VPN6 MPLS { $$ = BGP_AF_VPN6_MPLS; }
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| FLOW4 { $$ = BGP_AF_FLOW4; }
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| FLOW6 { $$ = BGP_AF_FLOW6; }
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;
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bgp_channel_start: bgp_afi
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{
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const struct bgp_af_desc *desc = bgp_get_af_desc($1);
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if (!desc)
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cf_error("Unknown AFI/SAFI");
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this_channel = channel_config_new(&channel_bgp, desc->net, this_proto);
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BGP_CC->c.name = desc->name;
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BGP_CC->c.ra_mode = RA_UNDEF;
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BGP_CC->afi = $1;
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BGP_CC->desc = desc;
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BGP_CC->gr_able = 0xff; /* undefined */
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};
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bgp_channel_item:
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channel_item
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| NEXT HOP ADDRESS ipa { BGP_CC->next_hop_addr = $4; }
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| NEXT HOP SELF { BGP_CC->next_hop_self = 1; BGP_CC->next_hop_keep = 0; }
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| NEXT HOP KEEP { BGP_CC->next_hop_keep = 1; BGP_CC->next_hop_self = 0; }
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| MISSING LLADDR SELF { BGP_CC->missing_lladdr = MLL_SELF; }
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| MISSING LLADDR DROP { BGP_CC->missing_lladdr = MLL_DROP; }
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| MISSING LLADDR IGNORE { BGP_CC->missing_lladdr = MLL_IGNORE; }
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| GATEWAY DIRECT { BGP_CC->gw_mode = GW_DIRECT; }
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| GATEWAY RECURSIVE { BGP_CC->gw_mode = GW_RECURSIVE; }
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| SECONDARY bool { BGP_CC->secondary = $2; }
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| GRACEFUL RESTART bool { BGP_CC->gr_able = $3; }
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| EXTENDED NEXT HOP bool { BGP_CC->ext_next_hop = $4; }
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| ADD PATHS RX { BGP_CC->add_path = BGP_ADD_PATH_RX; }
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| ADD PATHS TX { BGP_CC->add_path = BGP_ADD_PATH_TX; }
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| ADD PATHS bool { BGP_CC->add_path = $3 ? BGP_ADD_PATH_FULL : 0; }
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| IGP TABLE rtable {
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if (bgp_cc_is_ipv4(BGP_CC)) BGP_CC->igp_table_ip4 = $3;
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if (bgp_cc_is_ipv6(BGP_CC)) BGP_CC->igp_table_ip6 = $3;
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}
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| IGP TABLE IPV4 rtable { BGP_CC->igp_table_ip4 = $4; }
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| IGP TABLE IPV6 rtable { BGP_CC->igp_table_ip6 = $4; }
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;
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bgp_channel_opts:
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/* empty */
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| bgp_channel_opts bgp_channel_item ';'
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;
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bgp_channel_opt_list:
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/* empty */
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| '{' bgp_channel_opts '}'
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;
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bgp_channel_end:
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{
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if (!this_channel->table)
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cf_error("Routing table not specified");
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this_channel = NULL;
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};
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bgp_proto_channel: bgp_channel_start bgp_channel_opt_list bgp_channel_end;
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CF_ADDTO(dynamic_attr, BGP_ORIGIN
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{ $$ = f_new_dynamic_attr(EAF_TYPE_INT, T_ENUM_BGP_ORIGIN, EA_CODE(EAP_BGP, BA_ORIGIN)); })
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CF_ADDTO(dynamic_attr, BGP_PATH
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{ $$ = f_new_dynamic_attr(EAF_TYPE_AS_PATH, T_PATH, EA_CODE(EAP_BGP, BA_AS_PATH)); })
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CF_ADDTO(dynamic_attr, BGP_NEXT_HOP
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{ $$ = f_new_dynamic_attr(EAF_TYPE_IP_ADDRESS, T_IP, EA_CODE(EAP_BGP, BA_NEXT_HOP)); })
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CF_ADDTO(dynamic_attr, BGP_MED
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{ $$ = f_new_dynamic_attr(EAF_TYPE_INT, T_INT, EA_CODE(EAP_BGP, BA_MULTI_EXIT_DISC)); })
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CF_ADDTO(dynamic_attr, BGP_LOCAL_PREF
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{ $$ = f_new_dynamic_attr(EAF_TYPE_INT, T_INT, EA_CODE(EAP_BGP, BA_LOCAL_PREF)); })
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CF_ADDTO(dynamic_attr, BGP_ATOMIC_AGGR
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{ $$ = f_new_dynamic_attr(EAF_TYPE_OPAQUE, T_ENUM_EMPTY, EA_CODE(EAP_BGP, BA_ATOMIC_AGGR)); })
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CF_ADDTO(dynamic_attr, BGP_AGGREGATOR
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{ $$ = f_new_dynamic_attr(EAF_TYPE_INT, T_INT, EA_CODE(EAP_BGP, BA_AGGREGATOR)); })
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CF_ADDTO(dynamic_attr, BGP_COMMUNITY
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{ $$ = f_new_dynamic_attr(EAF_TYPE_INT_SET, T_CLIST, EA_CODE(EAP_BGP, BA_COMMUNITY)); })
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CF_ADDTO(dynamic_attr, BGP_ORIGINATOR_ID
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{ $$ = f_new_dynamic_attr(EAF_TYPE_ROUTER_ID, T_QUAD, EA_CODE(EAP_BGP, BA_ORIGINATOR_ID)); })
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CF_ADDTO(dynamic_attr, BGP_CLUSTER_LIST
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{ $$ = f_new_dynamic_attr(EAF_TYPE_INT_SET, T_CLIST, EA_CODE(EAP_BGP, BA_CLUSTER_LIST)); })
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CF_ADDTO(dynamic_attr, BGP_EXT_COMMUNITY
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{ $$ = f_new_dynamic_attr(EAF_TYPE_EC_SET, T_ECLIST, EA_CODE(EAP_BGP, BA_EXT_COMMUNITY)); })
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CF_ADDTO(dynamic_attr, BGP_LARGE_COMMUNITY
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{ $$ = f_new_dynamic_attr(EAF_TYPE_LC_SET, T_LCLIST, EA_CODE(EAP_BGP, BA_LARGE_COMMUNITY)); })
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CF_ENUM(T_ENUM_BGP_ORIGIN, ORIGIN_, IGP, EGP, INCOMPLETE)
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CF_CODE
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CF_END
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