bsd/netinet/if_tun.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 /* Copyright (c) 1997 Apple Computer, Inc. All Rights Reserved */
  23 /*
  24  * Copyright (c) 1988, Julian Onions <jpo@cs.nott.ac.uk>
  25  * Nottingham University 1987.
  26  *
  27  * This source may be freely distributed, however I would be interested
  28  * in any changes that are made.
  29  *
  30  * This driver takes packets off the IP i/f and hands them up to a
  31  * user process to have it's wicked way with. This driver has it's
  32  * roots in a similar driver written by Phil Cockcroft (formerly) at
  33  * UCL. This driver is based much more on read/write/select mode of
  34  * operation though.
  35  *
  36  */
  37
  38 #ifndef _NET_IF_TUN_H_
  39 #define _NET_IF_TUN_H_
  40
  41 struct tun_softc {
  42         u_short tun_flags;              /* misc flags */
  43 #define TUN_OPEN        0x0001
  44 #define TUN_INITED      0x0002
  45 #define TUN_RCOLL       0x0004
  46 #define TUN_IASET       0x0008
  47 #define TUN_DSTADDR     0x0010
  48 #define TUN_RWAIT       0x0040
  49 #define TUN_ASYNC       0x0080
  50 #define TUN_NBIO        0x0100
  51
  52 #define TUN_READY       (TUN_OPEN | TUN_INITED | TUN_IASET)
  53
  54         struct  ifnet tun_if;           /* the interface */
  55         int     tun_pgrp;               /* the process group - if any */
  56         struct  selinfo tun_rsel;       /* read select */
  57         struct  selinfo tun_wsel;       /* write select (not used) */
  58 #if NBPFILTER > 0
  59         caddr_t         tun_bpf;
  60 #endif
  61 };
  62
  63 /* Maximum packet size */
  64 #define TUNMTU          1500
  65
  66 /* ioctl's for get/set debug */
  67 #define TUNSDEBUG       _IOW('t', 90, int)
  68 #define TUNGDEBUG       _IOR('t', 89, int)
  69
  70 #endif /* !_NET_IF_TUN_H_ */