bsd/netns/ns.h

   1 /*
   2  * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * The contents of this file constitute Original Code as defined in and
   7  * are subject to the Apple Public Source License Version 1.1 (the
   8  * "License").  You may not use this file except in compliance with the
   9  * License.  Please obtain a copy of the License at
  10  * http://www.apple.com/publicsource and read it before using this file.
  11  *
  12  * This Original Code and all software distributed under the License are
  13  * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  14  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  15  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  16  * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
  17  * License for the specific language governing rights and limitations
  18  * under the License.
  19  *
  20  * @APPLE_LICENSE_HEADER_END@
  21  */
  22 /*
  23  * Copyright (c) 1984, 1985, 1986, 1987, 1993
  24  *      The Regents of the University of California.  All rights reserved.
  25  *
  26  * Redistribution and use in source and binary forms, with or without
  27  * modification, are permitted provided that the following conditions
  28  * are met:
  29  * 1. Redistributions of source code must retain the above copyright
  30  *    notice, this list of conditions and the following disclaimer.
  31  * 2. Redistributions in binary form must reproduce the above copyright
  32  *    notice, this list of conditions and the following disclaimer in the
  33  *    documentation and/or other materials provided with the distribution.
  34  * 3. All advertising materials mentioning features or use of this software
  35  *    must display the following acknowledgement:
  36  *      This product includes software developed by the University of
  37  *      California, Berkeley and its contributors.
  38  * 4. Neither the name of the University nor the names of its contributors
  39  *    may be used to endorse or promote products derived from this software
  40  *    without specific prior written permission.
  41  *
  42  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  43  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  44  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  45  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  46  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  47  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  48  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  49  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  50  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  51  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  52  * SUCH DAMAGE.
  53  *
  54  *      @(#)ns.h        8.1 (Berkeley) 6/10/93
  55  */
  56
  57 /*
  58  * Constants and Structures defined by the Xerox Network Software
  59  * per "Internet Transport Protocols", XSIS 028112, December 1981
  60  */
  61
  62 /*
  63  * Protocols
  64  */
  65 #define NSPROTO_RI      1               /* Routing Information */
  66 #define NSPROTO_ECHO    2               /* Echo Protocol */
  67 #define NSPROTO_ERROR   3               /* Error Protocol */
  68 #define NSPROTO_PE      4               /* Packet Exchange */
  69 #define NSPROTO_SPP     5               /* Sequenced Packet */
  70 #define NSPROTO_RAW     255             /* Placemarker*/
  71 #define NSPROTO_MAX     256             /* Placemarker*/
  72
  73
  74 /*
  75  * Port/Socket numbers: network standard functions
  76  */
  77
  78 #define NSPORT_RI       1               /* Routing Information */
  79 #define NSPORT_ECHO     2               /* Echo */
  80 #define NSPORT_RE       3               /* Router Error */
  81
  82 /*
  83  * Ports < NSPORT_RESERVED are reserved for priveleged
  84  * processes (e.g. root).
  85  */
  86 #define NSPORT_RESERVED         3000
  87
  88 /* flags passed to ns_output as last parameter */
  89
  90 #define NS_FORWARDING           0x1     /* most of idp header exists */
  91 #define NS_ROUTETOIF            0x10    /* same as SO_DONTROUTE */
  92 #define NS_ALLOWBROADCAST       SO_BROADCAST    /* can send broadcast packets */
  93
  94 #define NS_MAXHOPS              15
  95
  96 /* flags passed to get/set socket option */
  97 #define SO_HEADERS_ON_INPUT     1
  98 #define SO_HEADERS_ON_OUTPUT    2
  99 #define SO_DEFAULT_HEADERS      3
 100 #define SO_LAST_HEADER          4
 101 #define SO_NSIP_ROUTE           5
 102 #define SO_SEQNO                6
 103 #define SO_ALL_PACKETS          7
 104 #define SO_MTU                  8
 105
 106
 107 /*
 108  * NS addressing
 109  */
 110 union ns_host {
 111         u_char  c_host[6];
 112         u_short s_host[3];
 113 };
 114
 115 union ns_net {
 116         u_char  c_net[4];
 117         u_short s_net[2];
 118 };
 119
 120 union ns_net_u {
 121         union ns_net    net_e;
 122         u_long          long_e;
 123 };
 124
 125 struct ns_addr {
 126         union ns_net    x_net;
 127         union ns_host   x_host;
 128         u_short x_port;
 129 };
 130
 131 /*
 132  * Socket address, Xerox style
 133  */
 134 struct sockaddr_ns {
 135         u_char          sns_len;
 136         u_char          sns_family;
 137         struct ns_addr  sns_addr;
 138         char            sns_zero[2];
 139 };
 140 #define sns_port sns_addr.x_port
 141
 142 #ifdef vax
 143 #define ns_netof(a) (*(long *) & ((a).x_net)) /* XXX - not needed */
 144 #endif
 145 #define ns_neteqnn(a,b) (((a).s_net[0]==(b).s_net[0]) && \
 146                                         ((a).s_net[1]==(b).s_net[1]))
 147 #define ns_neteq(a,b) ns_neteqnn((a).x_net, (b).x_net)
 148 #define satons_addr(sa) (((struct sockaddr_ns *)&(sa))->sns_addr)
 149 #define ns_hosteqnh(s,t) ((s).s_host[0] == (t).s_host[0] && \
 150         (s).s_host[1] == (t).s_host[1] && (s).s_host[2] == (t).s_host[2])
 151 #define ns_hosteq(s,t) (ns_hosteqnh((s).x_host,(t).x_host))
 152 #define ns_nullhost(x) (((x).x_host.s_host[0]==0) && \
 153         ((x).x_host.s_host[1]==0) && ((x).x_host.s_host[2]==0))
 154
 155 #ifdef KERNEL
 156 extern struct domain nsdomain;
 157 union ns_host ns_thishost;
 158 union ns_host ns_zerohost;
 159 union ns_host ns_broadhost;
 160 union ns_net ns_zeronet;
 161 union ns_net ns_broadnet;
 162 u_short ns_cksum();
 163 #else
 164
 165 #include <sys/cdefs.h>
 166
 167 __BEGIN_DECLS
 168 extern struct ns_addr ns_addr __P((const char *));
 169 extern char *ns_ntoa __P((struct ns_addr));
 170 __END_DECLS
 171
 172 #endif