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

     /*      $NetBSD: ns.h,v 1.17 2003/08/07 16:33:45 agc Exp $      */
     
     /*
      * Copyright (c) 1984, 1985, 1986, 1987, 1993
      *      The Regents of the University of California.  All rights reserved.
      *
      * Redistribution and use in source and binary forms, with or without
      * modification, are permitted provided that the following conditions
      * are met:
     * 1. Redistributions of source code must retain the above copyright
     *    notice, this list of conditions and the following disclaimer.
     * 2. Redistributions in binary form must reproduce the above copyright
     *    notice, this list of conditions and the following disclaimer in the
     *    documentation and/or other materials provided with the distribution.
     * 3. Neither the name of the University nor the names of its contributors
     *    may be used to endorse or promote products derived from this software
     *    without specific prior written permission.
     *
     * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     * SUCH DAMAGE.
     *
     *      @(#)ns.h        8.1 (Berkeley) 6/10/93
     */
    
    /*
     * Constants and Structures defined by the Xerox Network Software
     * per "Internet Transport Protocols", XSIS 028112, December 1981
     */
    
    /*
     * Protocols
     */
    #define NSPROTO_RI      1               /* Routing Information */
    #define NSPROTO_ECHO    2               /* Echo Protocol */
    #define NSPROTO_ERROR   3               /* Error Protocol */
    #define NSPROTO_PE      4               /* Packet Exchange */
    #define NSPROTO_SPP     5               /* Sequenced Packet */
    #define NSPROTO_RAW     255             /* Placemarker*/
    #define NSPROTO_MAX     256             /* Placemarker*/
    
    
    /*
     * Port/Socket numbers: network standard functions
     */
    
    #define NSPORT_RI       1               /* Routing Information */
    #define NSPORT_ECHO     2               /* Echo */
    #define NSPORT_RE       3               /* Router Error */
    
    /*
     * Ports < NSPORT_RESERVED are reserved for privileged
     * processes (e.g. root).
     */
    #define NSPORT_RESERVED         3000
    
    /* flags passed to ns_output as last parameter */
    
    #define NS_FORWARDING           0x1             /* most of idp header exists */
    #define NS_ROUTETOIF            SO_DONTROUTE    /* bypass routing tables */
    #define NS_ALLOWBROADCAST       SO_BROADCAST    /* can send broadcast packets */
    
    #define NS_MAXHOPS              15
    
    /* flags passed to get/set socket option */
    #define SO_HEADERS_ON_INPUT     1
    #define SO_HEADERS_ON_OUTPUT    2
    #define SO_DEFAULT_HEADERS      3
    #define SO_LAST_HEADER          4
    #define SO_NSIP_ROUTE           5
    #define SO_SEQNO                6
    #define SO_ALL_PACKETS          7
    #define SO_MTU                  8
    
    
    /*
     * NS addressing
     */
    union ns_host {
            u_int8_t        c_host[6];
            u_int16_t       s_host[3];
    };
    
    union ns_net {
            u_int8_t        c_net[4];
            u_int16_t       s_net[2];
    };
    
    union ns_net_u {
            union ns_net    net_e;
            u_int32_t       long_e;
   };
   
   struct ns_addr {
           union ns_net    x_net;
           union ns_host   x_host;
           u_int16_t       x_port;
   };
   
   /*
    * Socket address, Xerox style
    */
   struct sockaddr_ns {
           u_char          sns_len;
           u_char          sns_family;
           struct ns_addr  sns_addr;
           char            sns_zero[2];
   };
   #define sns_port sns_addr.x_port
   
   #define ns_neteqnn(a,b) (((a).s_net[0]==(b).s_net[0]) && \
                                           ((a).s_net[1]==(b).s_net[1]))
   #define ns_neteq(a,b) ns_neteqnn((a).x_net, (b).x_net)
   #define satons_addr(sa) (((struct sockaddr_ns *)&(sa))->sns_addr)
   #define ns_hosteqnh(s,t) ((s).s_host[0] == (t).s_host[0] && \
           (s).s_host[1] == (t).s_host[1] && (s).s_host[2] == (t).s_host[2])
   #define ns_hosteq(s,t) (ns_hosteqnh((s).x_host,(t).x_host))
   #define ns_nullhost(x) (((x).x_host.s_host[0]==0) && \
           ((x).x_host.s_host[1]==0) && ((x).x_host.s_host[2]==0))
   
   #ifdef _KERNEL
   extern struct domain nsdomain;
   extern union ns_host ns_thishost;
   extern union ns_host ns_zerohost;
   extern union ns_host ns_broadhost;
   extern union ns_net ns_zeronet;
   extern union ns_net ns_broadnet;
   
   #define satosns(sa)     ((struct sockaddr_ns *)(sa))
   #define snstosa(sns)    ((struct sockaddr *)(sns))
   
   extern struct sockaddr_ns ns_netmask, ns_hostmask;
   #else
   
   #include <sys/cdefs.h>
   
   __BEGIN_DECLS
   extern struct ns_addr ns_addr __P((const char *));
   extern char *ns_ntoa __P((struct ns_addr));
   __END_DECLS
   
   #endif

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