Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 14 | */ |
| 15 | |
| 16 | #ifndef __IF_TUN_H |
| 17 | #define __IF_TUN_H |
| 18 | |
Al Viro | a3edb08 | 2007-12-22 17:52:42 +0000 | [diff] [blame] | 19 | #include <linux/types.h> |
| 20 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 21 | /* Read queue size */ |
| 22 | #define TUN_READQ_SIZE 500 |
| 23 | |
| 24 | /* TUN device flags */ |
| 25 | #define TUN_TUN_DEV 0x0001 |
| 26 | #define TUN_TAP_DEV 0x0002 |
| 27 | #define TUN_TYPE_MASK 0x000f |
| 28 | |
| 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 |
Rusty Russell | f43798c | 2008-07-03 03:48:02 -0700 | [diff] [blame] | 34 | #define TUN_VNET_HDR 0x0200 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 35 | |
| 36 | /* Ioctl defines */ |
| 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) |
Mike Kershaw | ff4cc3a | 2005-09-01 17:40:05 -0700 | [diff] [blame] | 42 | #define TUNSETLINK _IOW('T', 205, int) |
Guido Guenther | 8c64462 | 2007-07-02 22:50:25 -0700 | [diff] [blame] | 43 | #define TUNSETGROUP _IOW('T', 206, int) |
Rusty Russell | 07240fd | 2008-07-03 03:45:32 -0700 | [diff] [blame] | 44 | #define TUNGETFEATURES _IOR('T', 207, unsigned int) |
Rusty Russell | 5228ddc | 2008-07-03 03:46:16 -0700 | [diff] [blame] | 45 | #define TUNSETOFFLOAD _IOW('T', 208, unsigned int) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 46 | |
| 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 |
Rusty Russell | f43798c | 2008-07-03 03:48:02 -0700 | [diff] [blame] | 52 | #define IFF_VNET_HDR 0x4000 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 53 | |
Rusty Russell | 5228ddc | 2008-07-03 03:46:16 -0700 | [diff] [blame] | 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. */ |
| 59 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 60 | struct tun_pi { |
| 61 | unsigned short flags; |
Al Viro | a3edb08 | 2007-12-22 17:52:42 +0000 | [diff] [blame] | 62 | __be16 proto; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 63 | }; |
| 64 | #define TUN_PKT_STRIP 0x0001 |
| 65 | |
| 66 | #endif /* __IF_TUN_H */ |