The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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FreeBSD/Linux Kernel Cross Reference
sys/netns/ns.h

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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  * $FreeBSD: stable/3/sys/netns/ns.h 50583 1999-08-29 16:33:42Z peter $
   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 __P((const char *));
  152 extern char *ns_ntoa __P((struct ns_addr));
  153 __END_DECLS
  154 
  155 #endif
  156 
  157 #endif

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