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1c79356b 1/*
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2 * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
3 *
2d21ac55 4 * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
0a7de745 5 *
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6 * This file contains Original Code and/or Modifications of Original Code
7 * as defined in and that are subject to the Apple Public Source License
8 * Version 2.0 (the 'License'). You may not use this file except in
9 * compliance with the License. The rights granted to you under the License
10 * may not be used to create, or enable the creation or redistribution of,
11 * unlawful or unlicensed copies of an Apple operating system, or to
12 * circumvent, violate, or enable the circumvention or violation of, any
13 * terms of an Apple operating system software license agreement.
0a7de745 14 *
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15 * Please obtain a copy of the License at
16 * http://www.opensource.apple.com/apsl/ and read it before using this file.
0a7de745 17 *
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18 * The Original Code and all software distributed under the License are
19 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
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20 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
21 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
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22 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
23 * Please see the License for the specific language governing rights and
24 * limitations under the License.
0a7de745 25 *
2d21ac55 26 * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
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27 */
28/* Copyright (c) 1997 Apple Computer, Inc. All Rights Reserved */
29/*
30 * Copyright (c) 1988, Julian Onions <jpo@cs.nott.ac.uk>
31 * Nottingham University 1987.
32 *
33 * This source may be freely distributed, however I would be interested
34 * in any changes that are made.
35 *
36 * This driver takes packets off the IP i/f and hands them up to a
37 * user process to have it's wicked way with. This driver has it's
38 * roots in a similar driver written by Phil Cockcroft (formerly) at
39 * UCL. This driver is based much more on read/write/select mode of
40 * operation though.
41 *
42 */
43
44#ifndef _NET_IF_TUN_H_
45#define _NET_IF_TUN_H_
9bccf70c 46#include <sys/appleapiopts.h>
1c79356b 47
91447636 48#ifdef KERNEL_PRIVATE
1c79356b 49struct tun_softc {
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50 u_short tun_flags; /* misc flags */
51#define TUN_OPEN 0x0001
52#define TUN_INITED 0x0002
53#define TUN_RCOLL 0x0004
54#define TUN_IASET 0x0008
55#define TUN_DSTADDR 0x0010
56#define TUN_RWAIT 0x0040
57#define TUN_ASYNC 0x0080
58#define TUN_NBIO 0x0100
1c79356b 59
0a7de745 60#define TUN_READY (TUN_OPEN | TUN_INITED | TUN_IASET)
1c79356b 61
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62 struct ifnet tun_if; /* the interface */
63 int tun_pgrp; /* the process group - if any */
64 struct selinfo tun_rsel; /* read select */
65 struct selinfo tun_wsel; /* write select (not used) */
1c79356b 66#if NBPFILTER > 0
0a7de745 67 caddr_t tun_bpf;
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68#endif
69};
70
b0d623f7 71#endif /* KERNEL_PRIVATE */
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72
73/* ioctl's for get/set debug */
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74#define TUNSDEBUG _IOW('t', 90, int)
75#define TUNGDEBUG _IOR('t', 89, int)
1c79356b 76
91447636 77/* Maximum packet size */
0a7de745 78#define TUNMTU 1500
91447636 79
1c79356b 80#endif /* !_NET_IF_TUN_H_ */