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