4c553c5a5b
This is a major change of how the filters are interpreted. If everything works how it should, it should not affect you unless you are hacking the filters themselves. Anyway, this change should make a huge improvement in the filter performance as previous benchmarks showed that our major problem lies in the recursion itself. There are also some changes in nest and protocols, related mostly to spreading const declarations throughout the whole BIRD and also to refactored dynamic attribute definitions. The need of these came up during the whole work and it is too difficult to split out these not-so-related changes.
160 lines
3.7 KiB
Plaintext
160 lines
3.7 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_snh;
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static struct f_inst *this_srt_cmds, **this_srt_last_cmd;
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static struct static_route *
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static_nexthop_new(void)
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{
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struct static_route *nh = this_srt;
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if (this_snh)
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{
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/* Additional next hop */
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nh = cfg_allocz(sizeof(struct static_route));
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nh->net = this_srt->net;
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this_snh->mp_next = nh;
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}
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nh->dest = RTD_UNICAST;
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nh->mp_head = this_srt;
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return nh;
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};
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static void
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static_route_finish(void)
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{
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if (net_type_match(this_srt->net, NB_DEST) == !this_srt->dest)
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cf_error("Unexpected or missing nexthop/type");
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this_srt->cmds = f_postfixify(this_srt_cmds);
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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(ONLINK, WEIGHT, RECURSIVE, IGP, TABLE, BLACKHOLE, UNREACHABLE, BFD, MPLS)
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CF_GRAMMAR
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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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init_list(&STATIC_CFG->routes);
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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 ';' {
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if ($4->addr_type == NET_IP4)
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STATIC_CFG->igp_table_ip4 = $4;
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else if ($4->addr_type == NET_IP6)
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STATIC_CFG->igp_table_ip6 = $4;
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else
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cf_error("Incompatible IGP table type");
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}
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| static_proto stat_route stat_route_opt_list ';' { static_route_finish(); }
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;
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stat_nexthop:
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VIA ipa ipa_scope {
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this_snh = static_nexthop_new();
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this_snh->via = $2;
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this_snh->iface = $3;
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}
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| VIA TEXT {
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this_snh = static_nexthop_new();
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this_snh->via = IPA_NONE;
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this_snh->iface = if_get_by_name($2);
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}
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| stat_nexthop MPLS label_stack {
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this_snh->mls = $3;
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}
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| stat_nexthop ONLINK bool {
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this_snh->onlink = $3;
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}
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| stat_nexthop WEIGHT expr {
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this_snh->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_nexthop BFD bool {
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this_snh->use_bfd = $3; cf_check_bfd($3);
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}
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;
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stat_nexthops:
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stat_nexthop
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| stat_nexthops stat_nexthop
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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->routes, &this_srt->n);
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this_srt->net = $2;
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this_srt_cmds = NULL;
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this_srt_last_cmd = &this_srt_cmds;
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this_srt->mp_next = NULL;
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this_snh = NULL;
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}
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;
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stat_route:
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stat_route0 stat_nexthops
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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 RECURSIVE ipa MPLS label_stack {
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this_srt->dest = RTDX_RECURSIVE;
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this_srt->via = $3;
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this_srt->mls = $5;
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}
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| stat_route0 { this_srt->dest = RTD_NONE; }
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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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;
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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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