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/*
* Defines and structures common to LDP-Sync for OSPFv2 and OSPFv3 and ISIS
* 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
*/
#ifndef _LIBLDPSYNC_H
#define _LIBLDPSYNC_H
#ifdef __cplusplus
extern "C" {
#endif
/* LDP-IGP Sync values */
#define LDP_SYNC_FLAG_ENABLE (1 << 0) /* LDP-SYNC enabled */
#define LDP_SYNC_FLAG_HOLDDOWN (1 << 1) /* Holddown timer enabled */
#define LDP_SYNC_FLAG_IF_CONFIG (1 << 2) /* LDP-SYNC enabled on interface */
#define LDP_SYNC_FLAG_SET_METRIC (1 << 3) /* Metric has been set on ISIS intf */
#define LDP_IGP_SYNC_DEFAULT 0
#define LDP_IGP_SYNC_ENABLED 1
#define LDP_IGP_SYNC_STATE_NOT_REQUIRED 0
#define LDP_IGP_SYNC_STATE_REQUIRED_NOT_UP 1
#define LDP_IGP_SYNC_STATE_REQUIRED_UP 2
#define LDP_IGP_SYNC_HOLDDOWN_DEFAULT 0
#define LDP_IGP_SYNC_HELLO_TIMEOUT 1
/* LDP-IGP Sync structures */
struct ldp_sync_info_cmd {
uint16_t flags;
uint16_t holddown; /* timer value */
uint32_t sequence; /* hello sequence number */
struct thread *t_hello; /* hello timer for detecting LDP going down */
};
struct ldp_sync_info {
uint16_t flags; /* indicate if set on interface or globally */
uint8_t enabled; /* enabled */
uint8_t state; /* running state */
uint16_t holddown; /* timer value */
struct thread *t_holddown; /* holddown timer*/
uint32_t metric[2]; /* isis interface metric */
};
/* Prototypes. */
extern struct ldp_sync_info *ldp_sync_info_create(void);
extern bool ldp_sync_if_is_enabled(struct ldp_sync_info *ldp_sync_info);
extern bool ldp_sync_if_down(struct ldp_sync_info *ldp_sync_info);
extern void ldp_sync_info_free(struct ldp_sync_info **ldp_sync_info);
struct ldp_igp_sync_announce {
int proto;
};
struct ldp_igp_sync_if_state {
ifindex_t ifindex;
bool sync_start;
};
struct ldp_igp_sync_if_state_req {
int proto;
ifindex_t ifindex;
char name[INTERFACE_NAMSIZ];
};
struct ldp_igp_sync_hello {
int proto;
unsigned int sequence;
};
#ifdef __cplusplus
}
#endif
#endif /* _LIBLDPSYNC_H */
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