bsd/net/if_tun.h

   1 /*
   2  * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * Copyright (c) 1999-2003 Apple Computer, Inc.  All Rights Reserved.
   7  *
   8  * This file contains Original Code and/or Modifications of Original Code
   9  * as defined in and that are subject to the Apple Public Source License
  10  * Version 2.0 (the 'License'). You may not use this file except in
  11  * compliance with the License. Please obtain a copy of the License at
  12  * http://www.opensource.apple.com/apsl/ and read it before using this
  13  * file.
  14  *
  15  * The Original Code and all software distributed under the License are
  16  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  17  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  18  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  19  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  20  * Please see the License for the specific language governing rights and
  21  * limitations under the License.
  22  *
  23  * @APPLE_LICENSE_HEADER_END@
  24  */
  25 /*      $NetBSD: if_tun.h,v 1.5 1994/06/29 06:36:27 cgd Exp $   */
  26
  27 /*
  28  * Copyright (c) 1988, Julian Onions <jpo@cs.nott.ac.uk>
  29  * Nottingham University 1987.
  30  *
  31  * This source may be freely distributed, however I would be interested
  32  * in any changes that are made.
  33  *
  34  * This driver takes packets off the IP i/f and hands them up to a
  35  * user process to have its wicked way with. This driver has it's
  36  * roots in a similar driver written by Phil Cockcroft (formerly) at
  37  * UCL. This driver is based much more on read/write/select mode of
  38  * operation though.
  39  *
  40  */
  41
  42 #ifndef _NET_IF_TUN_H_
  43 #define _NET_IF_TUN_H_
  44 #include <sys/appleapiopts.h>
  45 #ifdef __APPLE_API_PRIVATE
  46
  47 /* Refer to if_tunvar.h for the softc stuff */
  48
  49 /* Maximum transmit packet size (default) */
  50 #define TUNMTU          1500
  51
  52 /* Maximum receive packet size (hard limit) */
  53 #define TUNMRU          16384
  54
  55 struct tuninfo {
  56         int     baudrate;               /* linespeed */
  57         short   mtu;                    /* maximum transmission unit */
  58         u_char  type;                   /* ethernet, tokenring, etc. */
  59         u_char  dummy;                  /* place holder */
  60 };
  61
  62 /* ioctl's for get/set debug */
  63 #define TUNSDEBUG       _IOW('t', 90, int)
  64 #define TUNGDEBUG       _IOR('t', 89, int)
  65 #define TUNSIFINFO      _IOW('t', 91, struct tuninfo)
  66 #define TUNGIFINFO      _IOR('t', 92, struct tuninfo)
  67
  68 #endif /* __APPLE_API_PRIVATE */
  69 #endif /* !_NET_IF_TUN_H_ */