+/* SPDX-License-Identifier: LGPL-2.1+ */
/***
- This file is part of systemd.
-
Copyright 2013 Tom Gundersen <teg@jklm.no>
-
- systemd is free software; you can redistribute it and/or modify it
- under the terms of the GNU Lesser General Public License as published by
- the Free Software Foundation; either version 2.1 of the License, or
- (at your option) any later version.
-
- systemd is distributed in the hope that it will be useful, but
- WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- Lesser General Public License for more details.
-
- You should have received a copy of the GNU Lesser General Public License
- along with systemd; If not, see <http://www.gnu.org/licenses/>.
***/
+#include "condition.h"
#include "conf-parser.h"
#include "networkd-util.h"
#include "parse-util.h"
return 0;
}
+
+/* Router lifetime can be set with netlink interface since kernel >= 4.5
+ * so for the supported kernel we dont need to expire routes in userspace */
+int kernel_route_expiration_supported(void) {
+ static int cached = -1;
+ int r;
+
+ if (cached < 0) {
+ Condition c = {
+ .type = CONDITION_KERNEL_VERSION,
+ .parameter = (char *) ">= 4.5"
+ };
+ r = condition_test(&c);
+ if (r < 0)
+ return r;
+
+ cached = r;
+ }
+ return cached;
+}