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/*
* ldp_sync.c: LDP-SYNC handling routines
* Copyright (C) 2020 Volta Networks, Inc.
*
* This program 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 of the License, or (at your option)
* any later version.
*
* This program 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
*/
#include <zebra.h>
#include "command.h"
#include "memory.h"
#include "prefix.h"
#include "log.h"
#include "thread.h"
#include "stream.h"
#include "zclient.h"
#include "table.h"
#include "vty.h"
#include "ldp_sync.h"
/* Library code */
DEFINE_MTYPE_STATIC(LIB, LDP_SYNC_INFO, "LDP SYNC info")
/*
* ldp_sync_info_create - Allocate the LDP_SYNC information
*/
struct ldp_sync_info *ldp_sync_info_create(void)
{
struct ldp_sync_info *ldp_sync_info;
ldp_sync_info = XCALLOC(MTYPE_LDP_SYNC_INFO,
sizeof(struct ldp_sync_info));
assert(ldp_sync_info);
ldp_sync_info->flags = 0;
ldp_sync_info->enabled = LDP_IGP_SYNC_DEFAULT;
ldp_sync_info->state = LDP_IGP_SYNC_STATE_NOT_REQUIRED;
ldp_sync_info->holddown = LDP_IGP_SYNC_HOLDDOWN_DEFAULT;
ldp_sync_info->t_holddown = NULL;
return ldp_sync_info;
}
/*
* ldp_sync_info_free - Free the LDP_SYNC information.
*/
void ldp_sync_info_free(struct ldp_sync_info **ldp_sync_info)
{
if (*ldp_sync_info)
XFREE(MTYPE_LDP_SYNC_INFO, *ldp_sync_info);
}
bool ldp_sync_if_is_enabled(struct ldp_sync_info *ldp_sync_info)
{
/* return true if LDP-SYNC is configured on this interface */
if (ldp_sync_info &&
ldp_sync_info->enabled == LDP_IGP_SYNC_ENABLED &&
ldp_sync_info->state == LDP_IGP_SYNC_STATE_REQUIRED_NOT_UP)
return true;
return false;
}
bool ldp_sync_if_down(struct ldp_sync_info *ldp_sync_info)
{
/* Stop LDP-SYNC on this interface:
* if holddown timer is running stop it
* update state
*/
if (ldp_sync_info && ldp_sync_info->enabled == LDP_IGP_SYNC_ENABLED) {
THREAD_OFF(ldp_sync_info->t_holddown);
if (ldp_sync_info->state == LDP_IGP_SYNC_STATE_REQUIRED_UP)
ldp_sync_info->state =
LDP_IGP_SYNC_STATE_REQUIRED_NOT_UP;
return true;
}
return false;
}
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