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/*********************************************************************
* Copyright 2017-2018 Network Device Education Foundation, Inc. ("NetDEF")
*
* 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
*
* bfdctl.h: all BFDd control socket protocol definitions.
*
* Authors
* -------
* Rafael Zalamena <rzalamena@opensourcerouting.org>
*/
#ifndef _BFDCTRL_H_
#define _BFDCTRL_H_
#include <netinet/in.h>
#include <stdbool.h>
#include <stdint.h>
/*
* Auxiliary definitions
*/
struct sockaddr_any {
union {
struct sockaddr_in sa_sin;
struct sockaddr_in6 sa_sin6;
};
};
#ifndef MAXNAMELEN
#define MAXNAMELEN 32
#endif
#define BPC_DEF_DETECTMULTIPLIER 3
#define BPC_DEF_RECEIVEINTERVAL 300 /* milliseconds */
#define BPC_DEF_TRANSMITINTERVAL 300 /* milliseconds */
#define BPC_DEF_ECHOINTERVAL 50 /* milliseconds */
/* Peer status */
enum bfd_peer_status {
BPS_SHUTDOWN = 0, /* == PTM_BFD_ADM_DOWN, "adm-down" */
BPS_DOWN = 1, /* == PTM_BFD_DOWN, "down" */
BPS_INIT = 2, /* == PTM_BFD_INIT, "init" */
BPS_UP = 3, /* == PTM_BFD_UP, "up" */
};
struct bfd_peer_cfg {
bool bpc_mhop;
bool bpc_ipv4;
struct sockaddr_any bpc_peer;
struct sockaddr_any bpc_local;
bool bpc_has_label;
char bpc_label[MAXNAMELEN];
bool bpc_has_localif;
char bpc_localif[MAXNAMELEN + 1];
bool bpc_has_vrfname;
char bpc_vrfname[MAXNAMELEN + 1];
bool bpc_has_detectmultiplier;
uint8_t bpc_detectmultiplier;
bool bpc_has_recvinterval;
uint64_t bpc_recvinterval;
bool bpc_has_txinterval;
uint64_t bpc_txinterval;
bool bpc_has_echointerval;
uint64_t bpc_echointerval;
bool bpc_echo;
bool bpc_createonly;
bool bpc_shutdown;
bool bpc_cbit;
/* Status information */
enum bfd_peer_status bpc_bps;
uint32_t bpc_id;
uint32_t bpc_remoteid;
uint8_t bpc_diag;
uint8_t bpc_remotediag;
uint8_t bpc_remote_detectmultiplier;
uint64_t bpc_remote_recvinterval;
uint64_t bpc_remote_txinterval;
uint64_t bpc_remote_echointerval;
uint64_t bpc_lastevent;
};
/*
* Protocol definitions
*/
enum bc_msg_version {
BMV_VERSION_1 = 1,
};
enum bc_msg_type {
BMT_RESPONSE = 1,
BMT_REQUEST_ADD = 2,
BMT_REQUEST_DEL = 3,
BMT_NOTIFY = 4,
BMT_NOTIFY_ADD = 5,
BMT_NOTIFY_DEL = 6,
};
/* Notify flags to use with bcm_notify. */
#define BCM_NOTIFY_ALL ((uint64_t)-1)
#define BCM_NOTIFY_PEER_STATE (1ULL << 0)
#define BCM_NOTIFY_CONFIG (1ULL << 1)
#define BCM_NOTIFY_NONE 0
/* Response 'status' definitions. */
#define BCM_RESPONSE_OK "ok"
#define BCM_RESPONSE_ERROR "error"
/* Notify operation. */
#define BCM_NOTIFY_PEER_STATUS "status"
#define BCM_NOTIFY_CONFIG_ADD "add"
#define BCM_NOTIFY_CONFIG_DELETE "delete"
#define BCM_NOTIFY_CONFIG_UPDATE "update"
/* Notification special ID. */
#define BCM_NOTIFY_ID 0
struct bfd_control_msg {
/* Total length without the header. */
uint32_t bcm_length;
/*
* Message request/response id.
* All requests will have a correspondent response with the
* same id.
*/
uint16_t bcm_id;
/* Message type. */
uint8_t bcm_type;
/* Message version. */
uint8_t bcm_ver;
/* Message payload. */
uint8_t bcm_data[0];
};
#endif
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