1 /*
2 * Universal TUN/TAP device driver.
3 * Copyright (C) 1999-2000 Maxim Krasnyansky <max_mk@yahoo.com>
4 *
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 2 of the License, or
8 * (at your option) any later version.
9 *
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
14 *
15 * $Id: if_tun.h,v 1.2 2001/06/01 18:39:47 davem Exp $
16 */
17
18 #ifndef __IF_TUN_H
19 #define __IF_TUN_H
20
21 #include <linux/types.h>
22
23 /* Read queue size */
24 #define TUN_READQ_SIZE 500
25
26 /* TUN device flags */
27 #define TUN_TUN_DEV 0x0001
28 #define TUN_TAP_DEV 0x0002
29 #define TUN_TYPE_MASK 0x000f
30
31 #define TUN_FASYNC 0x0010
32 #define TUN_NOCHECKSUM 0x0020
33 #define TUN_NO_PI 0x0040
34 #define TUN_ONE_QUEUE 0x0080
35 #define TUN_PERSIST 0x0100
36
37 /* Ioctl defines */
38 #define TUNSETNOCSUM _IOW('T', 200, int)
39 #define TUNSETDEBUG _IOW('T', 201, int)
40 #define TUNSETIFF _IOW('T', 202, int)
41 #define TUNSETPERSIST _IOW('T', 203, int)
42 #define TUNSETOWNER _IOW('T', 204, int)
43 #define TUNSETLINK _IOW('T', 205, int)
44 #define TUNSETGROUP _IOW('T', 206, int)
45
46 /* TUNSETIFF ifr flags */
47 #define IFF_TUN 0x0001
48 #define IFF_TAP 0x0002
49 #define IFF_NO_PI 0x1000
50 #define IFF_ONE_QUEUE 0x2000
51
52 struct tun_pi {
53 unsigned short flags;
54 __be16 proto;
55 };
56 #define TUN_PKT_STRIP 0x0001
57
58 #endif /* __IF_TUN_H */
59
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