2 * Universal TUN/TAP device driver.
3 * Copyright (C) 1999-2000 Maxim Krasnyansky <max_mk@yahoo.com>
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.
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.
19 #include <linux/types.h>
22 #define TUN_READQ_SIZE 500
24 /* TUN device flags */
25 #define TUN_TUN_DEV 0x0001
26 #define TUN_TAP_DEV 0x0002
27 #define TUN_TYPE_MASK 0x000f
29 #define TUN_FASYNC 0x0010
30 #define TUN_NOCHECKSUM 0x0020
31 #define TUN_NO_PI 0x0040
32 #define TUN_ONE_QUEUE 0x0080
33 #define TUN_PERSIST 0x0100
34 #define TUN_VNET_HDR 0x0200
37 #define TUNSETNOCSUM _IOW('T', 200, int)
38 #define TUNSETDEBUG _IOW('T', 201, int)
39 #define TUNSETIFF _IOW('T', 202, int)
40 #define TUNSETPERSIST _IOW('T', 203, int)
41 #define TUNSETOWNER _IOW('T', 204, int)
42 #define TUNSETLINK _IOW('T', 205, int)
43 #define TUNSETGROUP _IOW('T', 206, int)
44 #define TUNGETFEATURES _IOR('T', 207, unsigned int)
45 #define TUNSETOFFLOAD _IOW('T', 208, unsigned int)
47 /* TUNSETIFF ifr flags */
48 #define IFF_TUN 0x0001
49 #define IFF_TAP 0x0002
50 #define IFF_NO_PI 0x1000
51 #define IFF_ONE_QUEUE 0x2000
52 #define IFF_VNET_HDR 0x4000
54 /* Features for GSO (TUNSETOFFLOAD). */
55 #define TUN_F_CSUM 0x01 /* You can hand me unchecksummed packets. */
56 #define TUN_F_TSO4 0x02 /* I can handle TSO for IPv4 packets */
57 #define TUN_F_TSO6 0x04 /* I can handle TSO for IPv6 packets */
58 #define TUN_F_TSO_ECN 0x08 /* I can handle TSO with ECN bits. */
64 #define TUN_PKT_STRIP 0x0001
66 #endif /* __IF_TUN_H */