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      1 /*
      2  * Copyright (c) 1984, 1985, 1986, 1987, 1993
      3  *	The Regents of the University of California.  All rights reserved.
      4  *
      5  * Redistribution and use in source and binary forms, with or without
      6  * modification, are permitted provided that the following conditions
      7  * are met:
      8  * 1. Redistributions of source code must retain the above copyright
      9  *    notice, this list of conditions and the following disclaimer.
     10  * 2. Redistributions in binary form must reproduce the above copyright
     11  *    notice, this list of conditions and the following disclaimer in the
     12  *    documentation and/or other materials provided with the distribution.
     13  * 3. All advertising materials mentioning features or use of this software
     14  *    must display the following acknowledgement:
     15  *	This product includes software developed by the University of
     16  *	California, Berkeley and its contributors.
     17  * 4. Neither the name of the University nor the names of its contributors
     18  *    may be used to endorse or promote products derived from this software
     19  *    without specific prior written permission.
     20  *
     21  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     22  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     23  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     24  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     25  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     26  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     27  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     28  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     29  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     30  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     31  * SUCH DAMAGE.
     32  *
     33  *	@(#)ns.h	8.1 (Berkeley) 6/10/93
     34  * $Id: ns.h,v 1.1.1.1 2003/11/19 01:48:56 kyu3 Exp $
     35  */
     36 
     37 #ifndef _NETNS_NS_H_
     38 #define _NETNS_NS_H_
     39 
     40 /*
     41  * Constants and Structures defined by the Xerox Network Software
     42  * per "Internet Transport Protocols", XSIS 028112, December 1981
     43  */
     44 
     45 /*
     46  * Protocols
     47  */
     48 #define NSPROTO_RI	1		/* Routing Information */
     49 #define NSPROTO_ECHO	2		/* Echo Protocol */
     50 #define NSPROTO_ERROR	3		/* Error Protocol */
     51 #define NSPROTO_PE	4		/* Packet Exchange */
     52 #define NSPROTO_SPP	5		/* Sequenced Packet */
     53 #define NSPROTO_RAW	255		/* Placemarker*/
     54 #define NSPROTO_MAX	256		/* Placemarker*/
     55 
     56 
     57 /*
     58  * Port/Socket numbers: network standard functions
     59  */
     60 
     61 #define NSPORT_RI	1		/* Routing Information */
     62 #define NSPORT_ECHO	2		/* Echo */
     63 #define NSPORT_RE	3		/* Router Error */
     64 
     65 /*
     66  * Ports < NSPORT_RESERVED are reserved for priveleged
     67  * processes (e.g. root).
     68  */
     69 #define NSPORT_RESERVED		3000
     70 
     71 /* flags passed to ns_output as last parameter */
     72 
     73 #define	NS_FORWARDING		0x1	/* most of idp header exists */
     74 #define	NS_ROUTETOIF		0x10	/* same as SO_DONTROUTE */
     75 #define	NS_ALLOWBROADCAST	SO_BROADCAST	/* can send broadcast packets */
     76 
     77 #define NS_MAXHOPS		15
     78 
     79 /* flags passed to get/set socket option */
     80 #define	SO_HEADERS_ON_INPUT	1
     81 #define	SO_HEADERS_ON_OUTPUT	2
     82 #define	SO_DEFAULT_HEADERS	3
     83 #define	SO_LAST_HEADER		4
     84 #define	SO_NSIP_ROUTE		5
     85 #define SO_SEQNO		6
     86 #define	SO_ALL_PACKETS		7
     87 #define SO_MTU			8
     88 
     89 
     90 /*
     91  * NS addressing
     92  */
     93 union ns_host {
     94 	u_char	c_host[6];
     95 	u_short	s_host[3];
     96 };
     97 
     98 union ns_net {
     99 	u_char	c_net[4];
    100 	u_short	s_net[2];
    101 };
    102 
    103 union ns_net_u {
    104 	union ns_net	net_e;
    105 	u_long		long_e;
    106 };
    107 
    108 struct ns_addr {
    109 	union ns_net	x_net;
    110 	union ns_host	x_host;
    111 	u_short	x_port;
    112 };
    113 
    114 /*
    115  * Socket address, Xerox style
    116  */
    117 struct sockaddr_ns {
    118 	u_char		sns_len;
    119 	u_char		sns_family;
    120 	struct ns_addr	sns_addr;
    121 	char		sns_zero[2];
    122 };
    123 #define sns_port sns_addr.x_port
    124 
    125 #ifdef vax
    126 #define ns_netof(a) (*(long *) & ((a).x_net)) /* XXX - not needed */
    127 #endif
    128 #define ns_neteqnn(a,b) (((a).s_net[0]==(b).s_net[0]) && \
    129 					((a).s_net[1]==(b).s_net[1]))
    130 #define ns_neteq(a,b) ns_neteqnn((a).x_net, (b).x_net)
    131 #define satons_addr(sa)	(((struct sockaddr_ns *)&(sa))->sns_addr)
    132 #define ns_hosteqnh(s,t) ((s).s_host[0] == (t).s_host[0] && \
    133 	(s).s_host[1] == (t).s_host[1] && (s).s_host[2] == (t).s_host[2])
    134 #define ns_hosteq(s,t) (ns_hosteqnh((s).x_host,(t).x_host))
    135 #define ns_nullhost(x) (((x).x_host.s_host[0]==0) && \
    136 	((x).x_host.s_host[1]==0) && ((x).x_host.s_host[2]==0))
    137 
    138 #ifdef KERNEL
    139 extern struct domain nsdomain;
    140 union ns_host ns_thishost;
    141 union ns_host ns_zerohost;
    142 union ns_host ns_broadhost;
    143 union ns_net ns_zeronet;
    144 union ns_net ns_broadnet;
    145 u_short ns_cksum();
    146 #else
    147 
    148 #include <sys/cdefs.h>
    149 
    150 __BEGIN_DECLS
    151 extern struct ns_addr ns_addr (const char *);
    152 extern char *ns_ntoa (struct ns_addr);
    153 __END_DECLS
    154 
    155 #endif
    156 
    157 #endif
    158