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bird/sysdep/bsd/krt-sock.Y
Ondrej Zajicek 7fb23041a5 BSD: Add support for kernel route metric
Add support for kernel route metric/priority, exported as krt_metric
attribute, like in Linux. This should also fix issues with overwriting
or removing system routes.
2023-01-13 13:17:46 +01:00

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/*
* BIRD -- BSD Kernel Syncer Configuration
*
* (c) 1999--2000 Martin Mares <mj@ucw.cz>
*
* Can be freely distributed and used under the terms of the GNU GPL.
*/
CF_HDR
CF_DECLS
CF_KEYWORDS(KERNEL, TABLE, METRIC)
CF_GRAMMAR
kern_proto: kern_proto kern_sys_item ';' ;
kern_sys_item:
KERNEL TABLE expr {
if ($3 && (krt_max_tables == 1))
cf_error("Multiple kernel routing tables not supported");
if ($3 >= krt_max_tables)
cf_error("Kernel table id must be in range 0-%u", krt_max_tables - 1);
THIS_KRT->sys.table_id = $3;
}
| METRIC expr {
if ($2 && !krt_max_metric)
cf_error("Kernel route metric not supported");
if ($2 > krt_max_metric)
cf_error("Kernel table id must be in range 0-%u", krt_max_metric);
THIS_KRT->sys.metric = $2;
}
;
CF_CODE
CF_END