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https://gitlab.nic.cz/labs/bird.git
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f4a60a9bc4
The patch adds support for channels, structures connecting protocols and tables and handling most interactions between them. The documentation is missing yet.
137 lines
3.5 KiB
Plaintext
137 lines
3.5 KiB
Plaintext
/*
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* BIRD -- Static Protocol Configuration
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*
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* (c) 1998--1999 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/static/static.h"
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CF_DEFINES
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#define STATIC_CFG ((struct static_config *) this_proto)
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static struct static_route *this_srt, *this_srt_nh, *last_srt_nh;
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static struct f_inst **this_srt_last_cmd;
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static void
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static_route_finish(void)
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{
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struct static_route *r;
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/* Update undefined use_bfd entries in multipath nexthops */
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if (this_srt->dest == RTD_MULTIPATH)
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for (r = this_srt->mp_next; r; r = r->mp_next)
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if (r->use_bfd < 0)
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r->use_bfd = this_srt->use_bfd;
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}
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CF_DECLS
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CF_KEYWORDS(STATIC, ROUTE, VIA, DROP, REJECT, PROHIBIT, PREFERENCE, CHECK, LINK)
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CF_KEYWORDS(MULTIPATH, WEIGHT, RECURSIVE, IGP, TABLE, BLACKHOLE, UNREACHABLE, BFD)
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CF_GRAMMAR
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CF_ADDTO(proto, static_proto '}')
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static_proto_start: proto_start STATIC
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{
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this_proto = proto_config_new(&proto_static, $1);
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static_init_config(STATIC_CFG);
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};
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static_proto:
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static_proto_start proto_name '{'
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| static_proto proto_item ';'
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| static_proto proto_channel ';' { this_proto->net_type = $2->net_type; }
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| static_proto CHECK LINK bool ';' { STATIC_CFG->check_link = $4; }
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| static_proto IGP TABLE rtable ';' { STATIC_CFG->igp_table = $4; }
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| static_proto stat_route stat_route_opt_list ';' { static_route_finish(); }
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;
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stat_route0: ROUTE net_any {
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this_srt = cfg_allocz(sizeof(struct static_route));
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add_tail(&STATIC_CFG->other_routes, &this_srt->n);
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this_srt->net = $2;
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this_srt_last_cmd = &(this_srt->cmds);
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}
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;
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stat_multipath1:
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VIA ipa ipa_scope {
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last_srt_nh = this_srt_nh;
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this_srt_nh = cfg_allocz(sizeof(struct static_route));
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this_srt_nh->dest = RTD_NONE;
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this_srt_nh->via = $2;
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this_srt_nh->via_if = $3;
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this_srt_nh->if_name = (void *) this_srt; /* really */
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this_srt_nh->use_bfd = -1; /* undefined */
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}
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| stat_multipath1 WEIGHT expr {
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this_srt_nh->weight = $3 - 1;
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if (($3<1) || ($3>256)) cf_error("Weight must be in range 1-256");
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}
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| stat_multipath1 BFD bool {
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this_srt_nh->use_bfd = $3; cf_check_bfd($3);
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}
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;
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stat_multipath:
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stat_multipath1 { this_srt->mp_next = this_srt_nh; }
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| stat_multipath stat_multipath1 { last_srt_nh->mp_next = this_srt_nh; }
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;
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stat_route:
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stat_route0 VIA ipa ipa_scope {
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this_srt->dest = RTD_ROUTER;
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this_srt->via = $3;
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this_srt->via_if = $4;
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}
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| stat_route0 VIA TEXT {
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this_srt->dest = RTD_DEVICE;
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this_srt->if_name = $3;
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rem_node(&this_srt->n);
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add_tail(&STATIC_CFG->iface_routes, &this_srt->n);
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}
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| stat_route0 MULTIPATH stat_multipath {
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this_srt->dest = RTD_MULTIPATH;
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}
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| stat_route0 RECURSIVE ipa {
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this_srt->dest = RTDX_RECURSIVE;
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this_srt->via = $3;
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}
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| stat_route0 DROP { this_srt->dest = RTD_BLACKHOLE; }
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| stat_route0 REJECT { this_srt->dest = RTD_UNREACHABLE; }
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| stat_route0 BLACKHOLE { this_srt->dest = RTD_BLACKHOLE; }
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| stat_route0 UNREACHABLE { this_srt->dest = RTD_UNREACHABLE; }
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| stat_route0 PROHIBIT { this_srt->dest = RTD_PROHIBIT; }
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;
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stat_route_item:
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cmd { *this_srt_last_cmd = $1; this_srt_last_cmd = &($1->next); }
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| BFD bool ';' { this_srt->use_bfd = $2; cf_check_bfd($2); }
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;
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stat_route_opts:
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/* empty */
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| stat_route_opts stat_route_item
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;
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stat_route_opt_list:
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/* empty */
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| '{' stat_route_opts '}'
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;
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CF_CLI(SHOW STATIC, optsym, [<name>], [[Show details of static protocol]])
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{ static_show(proto_get_named($3, &proto_static)); } ;
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CF_CODE
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CF_END
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