/*	$NetBSD: route.h,v 1.4 2019/04/29 16:12:30 roy Exp $	*/

/*
 * Copyright (c) 1980, 1986, 1993
 *	The Regents of the University of California.  All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 *
 *	@(#)route.h	8.5 (Berkeley) 2/8/95
 */

#ifndef _COMPAT_NET_ROUTE_H_
#define _COMPAT_NET_ROUTE_H_

#include <sys/queue.h>
#include <sys/socket.h>
#include <sys/types.h>
#include <net/if.h>

#if !(defined(_KERNEL) || defined(_STANDALONE))
#include <stdbool.h>
#endif

/*
 * These numbers are used by reliable protocols for determining
 * retransmission behavior and are included in the routing structure.
 */
struct rt_metrics50 {
	u_long	rmx_locks;	/* Kernel must leave these values alone */
	u_long	rmx_mtu;	/* MTU for this path */
	u_long	rmx_hopcount;	/* max hops expected */
	u_long	rmx_expire;	/* lifetime for route, e.g. redirect */
	u_long	rmx_recvpipe;	/* inbound delay-bandwidth product */
	u_long	rmx_sendpipe;	/* outbound delay-bandwidth product */
	u_long	rmx_ssthresh;	/* outbound gateway buffer limit */
	u_long	rmx_rtt;	/* estimated round trip time */
	u_long	rmx_rttvar;	/* estimated rtt variance */
	u_long	rmx_pksent;	/* packets sent using this route */
};

/*
 * Structures for routing messages.
 */
struct rt_msghdr50 {
	u_short	rtm_msglen;	/* to skip over non-understood messages */
	u_char	rtm_version;	/* future binary compatibility */
	u_char	rtm_type;	/* message type */
	u_short	rtm_index;	/* index for associated ifp */
	int	rtm_flags;	/* flags, incl. kern & message, e.g. DONE */
	int	rtm_addrs;	/* bitmask identifying sockaddrs in msg */
	pid_t	rtm_pid;	/* identify sender */
	int	rtm_seq;	/* for sender to identify action */
	int	rtm_errno;	/* why failed */
	int	rtm_use;	/* from rtentry */
	u_long	rtm_inits;	/* which metrics we are initializing */
	struct	rt_metrics50 rtm_rmx; /* metrics themselves */
};

#ifdef _KERNEL
extern struct route_info compat_50_route_info;
void	compat_50_route_enqueue(struct mbuf *, int);
void	compat_50_rt_ifannouncemsg(struct ifnet *, int);
void	compat_50_rt_ieee80211msg(struct ifnet *, int, void *, size_t);
void	compat_50_rt_ifmsg(struct ifnet *);
void	compat_50_rt_missmsg(int, const struct rt_addrinfo *, int, int);
struct mbuf *
	compat_50_rt_msg1(int, struct rt_addrinfo *, void *, int);
void	compat_50_rt_addrmsg_rt(int, struct ifaddr *, int, struct rtentry *);
void	compat_50_rt_addrmsg_src(int, struct ifaddr *, const struct sockaddr *);
void	compat_50_rt_addrmsg(int, struct ifaddr *);
void	compat_70_rt_newaddrmsg1(int, struct ifaddr *);
#endif

#define RTM_OVERSION	3	/* Up the ante and ignore older versions */

#define RT_OROUNDUP(a)		RT_ROUNDUP2((a), sizeof(long))
#define RT_OADVANCE(x, n)	(x += RT_OROUNDUP((n)->sa_len))

#endif /* !_COMPAT_NET_ROUTE_H_ */