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/*
* 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 FreeRangeRouting (FRR)
*
* FRR is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2, or (at your option) any
* later version.
*
* FRR 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
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; see the file COPYING; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef _ZEBRA_SPF_BACKOFF_H
#define _ZEBRA_SPF_BACKOFF_H
struct spf_backoff;
struct thread_master;
struct vty;
struct spf_backoff *spf_backoff_new(struct thread_master *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);
#endif
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