sys/netproto/ns/ns.h

   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: src/sys/netns/ns.h,v 1.13.2.1 2002/12/01 14:03:09 sobomax Exp $
  35  * $DragonFly: src/sys/netproto/ns/ns.h,v 1.8 2004/07/27 13:50:15 hmp Exp $
  36  */
  37
  38 #ifndef _NETNS_NS_H_
  39 #define _NETNS_NS_H_
  40
  41 /*
  42  * Constants and Structures defined by the Xerox Network Software
  43  * per "Internet Transport Protocols", XSIS 028112, December 1981
  44  */
  45
  46 /*
  47  * Protocols
  48  */
  49 #define NSPROTO_RI      1               /* Routing Information */
  50 #define NSPROTO_ECHO    2               /* Echo Protocol */
  51 #define NSPROTO_ERROR   3               /* Error Protocol */
  52 #define NSPROTO_PE      4               /* Packet Exchange */
  53 #define NSPROTO_SPP     5               /* Sequenced Packet */
  54 #define NSPROTO_RAW     255             /* Placemarker*/
  55 #define NSPROTO_MAX     256             /* Placemarker*/
  56
  57
  58 /*
  59  * Port/Socket numbers: network standard functions
  60  */
  61
  62 #define NSPORT_RI       1               /* Routing Information */
  63 #define NSPORT_ECHO     2               /* Echo */
  64 #define NSPORT_RE       3               /* Router Error */
  65
  66 /*
  67  * Ports < NSPORT_RESERVED are reserved for priveleged
  68  * processes (e.g. root).
  69  */
  70 #define NSPORT_RESERVED         3000
  71
  72 /* flags passed to ns_output as last parameter */
  73
  74 #define NS_FORWARDING           0x1     /* most of idp header exists */
  75 #define NS_ROUTETOIF            0x10    /* same as SO_DONTROUTE */
  76 #define NS_ALLOWBROADCAST       SO_BROADCAST    /* can send broadcast packets */
  77
  78 #define NS_MAXHOPS              15
  79
  80 /* flags passed to get/set socket option */
  81 #define SO_HEADERS_ON_INPUT     1
  82 #define SO_HEADERS_ON_OUTPUT    2
  83 #define SO_DEFAULT_HEADERS      3
  84 #define SO_LAST_HEADER          4
  85 #define SO_NSIP_ROUTE           5
  86 #define SO_SEQNO                6
  87 #define SO_ALL_PACKETS          7
  88 #define SO_MTU                  8
  89
  90
  91 /*
  92  * NS addressing
  93  */
  94 union ns_host {
  95         u_char  c_host[6];
  96         u_short s_host[3];
  97 };
  98
  99 union ns_net {
 100         u_char  c_net[4];
 101         u_short s_net[2];
 102 };
 103
 104 union ns_net_u {
 105         union ns_net    net_e;
 106         u_long          long_e;
 107 };
 108
 109 struct ns_addr {
 110         union ns_net    x_net;
 111         union ns_host   x_host;
 112         u_short x_port;
 113 };
 114
 115 /*
 116  * Socket address, Xerox style
 117  */
 118 struct sockaddr_ns {
 119         u_char          sns_len;
 120         u_char          sns_family;
 121         struct ns_addr  sns_addr;
 122         char            sns_zero[2];
 123 };
 124 #define sns_port sns_addr.x_port
 125
 126 #define ns_neteqnn(a,b) (((a).s_net[0]==(b).s_net[0]) && \
 127                                         ((a).s_net[1]==(b).s_net[1]))
 128 #define ns_neteq(a,b) ns_neteqnn((a).x_net, (b).x_net)
 129 #define satons_addr(sa) (((struct sockaddr_ns *)&(sa))->sns_addr)
 130 #define ns_hosteqnh(s,t) ((s).s_host[0] == (t).s_host[0] && \
 131         (s).s_host[1] == (t).s_host[1] && (s).s_host[2] == (t).s_host[2])
 132 #define ns_hosteq(s,t) (ns_hosteqnh((s).x_host,(t).x_host))
 133 #define ns_nullhost(x) (((x).x_host.s_host[0]==0) && \
 134         ((x).x_host.s_host[1]==0) && ((x).x_host.s_host[2]==0))
 135
 136 #ifdef _KERNEL
 137 extern struct domain nsdomain;
 138 extern union ns_host ns_thishost;
 139 extern union ns_host ns_zerohost;
 140 extern union ns_host ns_broadhost;
 141 extern union ns_net ns_zeronet;
 142 extern union ns_net ns_broadnet;
 143
 144 struct route;
 145 struct ns_ifaddr;
 146
 147 u_short ns_cksum (struct mbuf *, int);
 148 int ns_output (struct mbuf *, struct route *, int);
 149 int ns_control (struct socket *, u_long, caddr_t, struct ifnet *, struct thread *);
 150 void ns_init (void);
 151 void idp_forward (struct mbuf *);
 152 void idp_ctlinput (int, caddr_t);
 153 int idp_do_route (struct ns_addr *, struct route *);
 154 void idp_undo_route (struct route *);
 155 void ns_watch_output (struct mbuf *, struct ifnet *);
 156 int ns_ifinit (struct ifnet *, struct ns_ifaddr *, struct sockaddr_ns *,
 157                         int);
 158 void ns_ifscrub (struct ifnet *, struct ns_ifaddr *);
 159
 160
 161 #else
 162
 163 #include <sys/cdefs.h>
 164
 165 __BEGIN_DECLS
 166 extern struct ns_addr ns_addr (const char *);
 167 extern char *ns_ntoa (struct ns_addr);
 168 __END_DECLS
 169
 170 #endif
 171
 172 #endif