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      1 /*	$NetBSD: route.h,v 1.4 2019/04/29 16:12:30 roy Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 1980, 1986, 1993
      5  *	The Regents of the University of California.  All rights reserved.
      6  *
      7  * Redistribution and use in source and binary forms, with or without
      8  * modification, are permitted provided that the following conditions
      9  * are met:
     10  * 1. Redistributions of source code must retain the above copyright
     11  *    notice, this list of conditions and the following disclaimer.
     12  * 2. Redistributions in binary form must reproduce the above copyright
     13  *    notice, this list of conditions and the following disclaimer in the
     14  *    documentation and/or other materials provided with the distribution.
     15  * 3. Neither the name of the University nor the names of its contributors
     16  *    may be used to endorse or promote products derived from this software
     17  *    without specific prior written permission.
     18  *
     19  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     20  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     21  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     22  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     23  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     24  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     25  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     26  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     27  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     28  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     29  * SUCH DAMAGE.
     30  *
     31  *	@(#)route.h	8.5 (Berkeley) 2/8/95
     32  */
     33 
     34 #ifndef _COMPAT_NET_ROUTE_H_
     35 #define _COMPAT_NET_ROUTE_H_
     36 
     37 #include <sys/queue.h>
     38 #include <sys/socket.h>
     39 #include <sys/types.h>
     40 #include <net/if.h>
     41 
     42 #if !(defined(_KERNEL) || defined(_STANDALONE))
     43 #include <stdbool.h>
     44 #endif
     45 
     46 /*
     47  * These numbers are used by reliable protocols for determining
     48  * retransmission behavior and are included in the routing structure.
     49  */
     50 struct rt_metrics50 {
     51 	u_long	rmx_locks;	/* Kernel must leave these values alone */
     52 	u_long	rmx_mtu;	/* MTU for this path */
     53 	u_long	rmx_hopcount;	/* max hops expected */
     54 	u_long	rmx_expire;	/* lifetime for route, e.g. redirect */
     55 	u_long	rmx_recvpipe;	/* inbound delay-bandwidth product */
     56 	u_long	rmx_sendpipe;	/* outbound delay-bandwidth product */
     57 	u_long	rmx_ssthresh;	/* outbound gateway buffer limit */
     58 	u_long	rmx_rtt;	/* estimated round trip time */
     59 	u_long	rmx_rttvar;	/* estimated rtt variance */
     60 	u_long	rmx_pksent;	/* packets sent using this route */
     61 };
     62 
     63 /*
     64  * Structures for routing messages.
     65  */
     66 struct rt_msghdr50 {
     67 	u_short	rtm_msglen;	/* to skip over non-understood messages */
     68 	u_char	rtm_version;	/* future binary compatibility */
     69 	u_char	rtm_type;	/* message type */
     70 	u_short	rtm_index;	/* index for associated ifp */
     71 	int	rtm_flags;	/* flags, incl. kern & message, e.g. DONE */
     72 	int	rtm_addrs;	/* bitmask identifying sockaddrs in msg */
     73 	pid_t	rtm_pid;	/* identify sender */
     74 	int	rtm_seq;	/* for sender to identify action */
     75 	int	rtm_errno;	/* why failed */
     76 	int	rtm_use;	/* from rtentry */
     77 	u_long	rtm_inits;	/* which metrics we are initializing */
     78 	struct	rt_metrics50 rtm_rmx; /* metrics themselves */
     79 };
     80 
     81 #ifdef _KERNEL
     82 extern struct route_info compat_50_route_info;
     83 void	compat_50_route_enqueue(struct mbuf *, int);
     84 void	compat_50_rt_ifannouncemsg(struct ifnet *, int);
     85 void	compat_50_rt_ieee80211msg(struct ifnet *, int, void *, size_t);
     86 void	compat_50_rt_ifmsg(struct ifnet *);
     87 void	compat_50_rt_missmsg(int, const struct rt_addrinfo *, int, int);
     88 struct mbuf *
     89 	compat_50_rt_msg1(int, struct rt_addrinfo *, void *, int);
     90 void	compat_50_rt_addrmsg_rt(int, struct ifaddr *, int, struct rtentry *);
     91 void	compat_50_rt_addrmsg_src(int, struct ifaddr *, const struct sockaddr *);
     92 void	compat_50_rt_addrmsg(int, struct ifaddr *);
     93 void	compat_70_rt_newaddrmsg1(int, struct ifaddr *);
     94 #endif
     95 
     96 #define RTM_OVERSION	3	/* Up the ante and ignore older versions */
     97 
     98 #define RT_OROUNDUP(a)		RT_ROUNDUP2((a), sizeof(long))
     99 #define RT_OADVANCE(x, n)	(x += RT_OROUNDUP((n)->sa_len))
    100 
    101 #endif /* !_COMPAT_NET_ROUTE_H_ */
    102