Adding upstream version 9.1.upstream/9.1

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 56 insertions, 0 deletions

diff --git a/lib/spf_backoff.h b/lib/spf_backoff.h
new file mode 100644
index 0000000..83f1b76
--- /dev/null
+++ b/lib/spf_backoff.h
@@ -0,0 +1,56 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * This is an implementation of the IETF SPF delay algorithm
+ * as explained in draft-ietf-rtgwg-backoff-algo-04
+ *
+ * Created: 25-01-2017 by S. Litkowski
+ *
+ * Copyright (C) 2017 Orange Labs http://www.orange.com/
+ * Copyright (C) 2017 by Christian Franke, Open Source Routing / NetDEF Inc.
+ *
+ * This file is part of FRRouting (FRR)
+ */
+#ifndef _ZEBRA_SPF_BACKOFF_H
+#define _ZEBRA_SPF_BACKOFF_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+struct spf_backoff;
+struct event_loop;
+struct vty;
+
+struct spf_backoff *spf_backoff_new(struct event_loop *m, const char *name,
+				    long init_delay, long short_delay,
+				    long long_delay, long holddown,
+				    long timetolearn);
+
+void spf_backoff_free(struct spf_backoff *backoff);
+
+/* Called whenever an IGP event is received, returns how many
+ * milliseconds routing table computation should be delayed */
+long spf_backoff_schedule(struct spf_backoff *backoff);
+
+/* Shows status of SPF backoff instance */
+void spf_backoff_show(struct spf_backoff *backoff, struct vty *vty,
+		      const char *prefix);
+
+/* Writes out global SPF backoff debug config */
+int spf_backoff_write_config(struct vty *vty);
+
+/* Registers global SPF backoff debug commands */
+void spf_backoff_cmd_init(void);
+
+/* Accessor functions for SPF backoff parameters */
+long spf_backoff_init_delay(struct spf_backoff *backoff);
+long spf_backoff_short_delay(struct spf_backoff *backoff);
+long spf_backoff_long_delay(struct spf_backoff *backoff);
+long spf_backoff_holddown(struct spf_backoff *backoff);
+long spf_backoff_timetolearn(struct spf_backoff *backoff);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif