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8d9eef1771
Kernel option 'merge paths' allows to merge routes exported to kernel protocol (currently BGP and static routes) to multipath routes.
85 lines
2.3 KiB
Plaintext
85 lines
2.3 KiB
Plaintext
/*
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* BIRD -- UNIX Kernel Syncer Configuration
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*
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* (c) 1998--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 "lib/krt.h"
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CF_DEFINES
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#define THIS_KRT ((struct krt_config *) this_proto)
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#define THIS_KIF ((struct kif_config *) this_proto)
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CF_DECLS
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CF_KEYWORDS(KERNEL, PERSIST, SCAN, TIME, LEARN, DEVICE, ROUTES, GRACEFUL, RESTART, KRT_SOURCE, KRT_METRIC, MERGE, PATHS)
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CF_GRAMMAR
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/* Kernel syncer protocol */
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CF_ADDTO(proto, kern_proto '}')
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kern_proto_start: proto_start KERNEL { this_proto = krt_init_config($1); }
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;
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CF_ADDTO(kern_proto, kern_proto_start proto_name '{')
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CF_ADDTO(kern_proto, kern_proto proto_item ';')
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CF_ADDTO(kern_proto, kern_proto kern_item ';')
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kern_item:
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PERSIST bool { THIS_KRT->persist = $2; }
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| SCAN TIME expr {
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/* Scan time of 0 means scan on startup only */
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THIS_KRT->scan_time = $3;
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}
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| LEARN bool {
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THIS_KRT->learn = $2;
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#ifndef KRT_ALLOW_LEARN
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if ($2)
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cf_error("Learning of kernel routes not supported in this configuration");
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#endif
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}
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| DEVICE ROUTES bool { THIS_KRT->devroutes = $3; }
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| GRACEFUL RESTART bool { THIS_KRT->graceful_restart = $3; }
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| MERGE PATHS bool { THIS_KRT->merge_paths = $3 ? KRT_DEFAULT_ECMP_LIMIT : 0; }
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| MERGE PATHS bool LIMIT expr { THIS_KRT->merge_paths = $3 ? $5 : 0; if (($5 <= 0) || ($5 > 255)) cf_error("Merge paths limit must be in range 1-255"); }
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;
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/* Kernel interface protocol */
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CF_ADDTO(proto, kif_proto '}')
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kif_proto_start: proto_start DEVICE { this_proto = kif_init_config($1); }
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;
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CF_ADDTO(kif_proto, kif_proto_start proto_name '{')
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CF_ADDTO(kif_proto, kif_proto proto_item ';')
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CF_ADDTO(kif_proto, kif_proto kif_item ';')
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kif_item:
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SCAN TIME expr {
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/* Scan time of 0 means scan on startup only */
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THIS_KIF->scan_time = $3;
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}
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| PRIMARY text_or_none prefix_or_ipa {
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struct kif_primary_item *kpi = cfg_alloc(sizeof (struct kif_primary_item));
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kpi->pattern = $2;
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kpi->prefix = $3.addr;
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kpi->pxlen = $3.len;
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add_tail(&THIS_KIF->primary, &kpi->n);
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}
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;
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CF_ADDTO(dynamic_attr, KRT_SOURCE { $$ = f_new_dynamic_attr(EAF_TYPE_INT | EAF_TEMP, T_INT, EA_KRT_SOURCE); })
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CF_ADDTO(dynamic_attr, KRT_METRIC { $$ = f_new_dynamic_attr(EAF_TYPE_INT | EAF_TEMP, T_INT, EA_KRT_METRIC); })
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CF_CODE
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CF_END
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