/*

 * Soft:        Keepalived is a failover program for the LVS project

 *              <www.linuxvirtualserver.org>. It monitor & manipulate

 *              a loadbalanced server pool using multi-layer checks.

 *

 * Part:        keepalived_netlink.c include file.

 *

 * Author:      Alexandre Cassen, <acassen@linux-vs.org>

 *

 *              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.

 *

 *              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.

 *

 * Copyright (C) 2001-2017 Alexandre Cassen, <acassen@gmail.com>

 */

#ifndef _VRRP_NETLINK_H

#define _VRRP_NETLINK_H 1

#include "config.h"

/* global includes */

#include <stdint.h>

#include <stdbool.h>

#include <sys/types.h>

#include <linux/netlink.h>

#include <linux/rtnetlink.h>

/* local includes */

#include "scheduler.h"

#ifdef _WITH_VRRP_

#include "vrrp_if.h"

#endif

/* types definitions */

typedef struct _nl_handle {

	int			fd;

	uint32_t		nl_pid;

	__u32			seq;

	thread_t		*thread;

} nl_handle_t;

/* Define types */

#ifndef NLMSG_TAIL

#define NLMSG_TAIL(nmsg) (((void *) (nmsg)) + NLMSG_ALIGN((nmsg)->nlmsg_len))

#endif

#if !defined SOL_NETLINK

#define SOL_NETLINK 270

#endif

#define RTA_TAIL(rta)	((struct rtattr *) (((void *) (rta)) + RTA_ALIGN((rta)->rta_len)))

/* Global vars exported */

#ifdef _WITH_VRRP_

extern nl_handle_t nl_cmd;	/* Command channel */

extern int netlink_error_ignore; /* If we get this error, ignore it */

#endif

#ifdef _NETLINK_TIMERS_

extern bool do_netlink_timers;

#endif

/* prototypes */

#ifdef _NETLINK_TIMERS_

extern void report_and_clear_netlink_timers(const char *);

#endif

#ifdef _WITH_VRRP_

extern int addattr_l(struct nlmsghdr *, size_t, unsigned short, void *, size_t);

extern int addattr8(struct nlmsghdr *, size_t, unsigned short, uint8_t);

extern int addattr32(struct nlmsghdr *, size_t, unsigned short, uint32_t);

extern int addattr64(struct nlmsghdr *, size_t, unsigned short, uint64_t);

extern int addattr_l2(struct nlmsghdr *, size_t, unsigned short, void *, size_t, void *, size_t);

extern int addraw_l(struct nlmsghdr *, size_t, const void *, size_t);

extern size_t rta_addattr_l(struct rtattr *, size_t, unsigned short, const void *, size_t);

extern size_t rta_addattr_l2(struct rtattr *, size_t, unsigned short, const void *, size_t, const void*, size_t);

extern size_t rta_addattr64(struct rtattr *, size_t, unsigned short, uint64_t);

extern size_t rta_addattr32(struct rtattr *, size_t, unsigned short, uint32_t);

extern size_t rta_addattr16(struct rtattr *, size_t, unsigned short, uint16_t);

extern size_t rta_addattr8(struct rtattr *, size_t, unsigned short, uint8_t);

extern struct rtattr *rta_nest(struct rtattr *, size_t, unsigned short);

extern size_t rta_nest_end(struct rtattr *, struct rtattr *);

extern ssize_t netlink_talk(nl_handle_t *, struct nlmsghdr *);

extern int netlink_interface_lookup(char *);

extern void kernel_netlink_poll(void);

extern void process_if_status_change(interface_t *);

#endif

extern void kernel_netlink_set_recv_bufs(void);

#ifdef _HAVE_FIB_ROUTING_

extern void set_extra_netlink_monitoring(bool, bool, bool, bool);

#endif

extern void kernel_netlink_init(void);

#if defined _WITH_VRRP_ || defined _WITH_LVS_

extern void kernel_netlink_read_interfaces(void);

#endif

extern void kernel_netlink_close(void);

extern void kernel_netlink_close_monitor(void);

extern void kernel_netlink_close_cmd(void);

#ifdef THREAD_DUMP

extern void register_keepalived_netlink_addresses(void);

#endif

#endif