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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 422 | giacomo | 1 | /* |
| 2 | * Universal TUN/TAP device driver. |
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| 3 | * Copyright (C) 1999-2000 Maxim Krasnyansky <max_mk@yahoo.com> |
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| 4 | * |
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| 5 | * This program is free software; you can redistribute it and/or modify |
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| 6 | * it under the terms of the GNU General Public License as published by |
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| 7 | * the Free Software Foundation; either version 2 of the License, or |
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| 8 | * (at your option) any later version. |
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| 9 | * |
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| 10 | * This program is distributed in the hope that it will be useful, |
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| 11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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| 13 | * GNU General Public License for more details. |
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| 14 | * |
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| 15 | * $Id: if_tun.h,v 1.1 2004-01-28 15:25:37 giacomo Exp $ |
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| 16 | */ |
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| 17 | |||
| 18 | #ifndef __IF_TUN_H |
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| 19 | #define __IF_TUN_H |
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| 20 | |||
| 21 | /* Uncomment to enable debugging */ |
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| 22 | /* #define TUN_DEBUG 1 */ |
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| 23 | |||
| 24 | #ifdef __KERNEL__ |
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| 25 | |||
| 26 | #ifdef TUN_DEBUG |
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| 27 | #define DBG if(tun->debug)printk |
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| 28 | #define DBG1 if(debug==2)printk |
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| 29 | #else |
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| 30 | #define DBG( a... ) |
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| 31 | #define DBG1( a... ) |
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| 32 | #endif |
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| 33 | |||
| 34 | struct tun_struct { |
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| 35 | struct list_head list; |
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| 36 | unsigned long flags; |
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| 37 | int attached; |
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| 38 | uid_t owner; |
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| 39 | |||
| 40 | wait_queue_head_t read_wait; |
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| 41 | struct sk_buff_head readq; |
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| 42 | |||
| 43 | struct net_device *dev; |
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| 44 | struct net_device_stats stats; |
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| 45 | |||
| 46 | struct fasync_struct *fasync; |
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| 47 | |||
| 48 | #ifdef TUN_DEBUG |
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| 49 | int debug; |
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| 50 | #endif |
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| 51 | }; |
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| 52 | |||
| 53 | #endif /* __KERNEL__ */ |
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| 54 | |||
| 55 | /* Read queue size */ |
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| 56 | #define TUN_READQ_SIZE 10 |
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| 57 | |||
| 58 | /* TUN device flags */ |
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| 59 | #define TUN_TUN_DEV 0x0001 |
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| 60 | #define TUN_TAP_DEV 0x0002 |
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| 61 | #define TUN_TYPE_MASK 0x000f |
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| 62 | |||
| 63 | #define TUN_FASYNC 0x0010 |
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| 64 | #define TUN_NOCHECKSUM 0x0020 |
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| 65 | #define TUN_NO_PI 0x0040 |
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| 66 | #define TUN_ONE_QUEUE 0x0080 |
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| 67 | #define TUN_PERSIST 0x0100 |
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| 68 | |||
| 69 | /* Ioctl defines */ |
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| 70 | #define TUNSETNOCSUM _IOW('T', 200, int) |
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| 71 | #define TUNSETDEBUG _IOW('T', 201, int) |
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| 72 | #define TUNSETIFF _IOW('T', 202, int) |
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| 73 | #define TUNSETPERSIST _IOW('T', 203, int) |
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| 74 | #define TUNSETOWNER _IOW('T', 204, int) |
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| 75 | |||
| 76 | /* TUNSETIFF ifr flags */ |
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| 77 | #define IFF_TUN 0x0001 |
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| 78 | #define IFF_TAP 0x0002 |
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| 79 | #define IFF_NO_PI 0x1000 |
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| 80 | #define IFF_ONE_QUEUE 0x2000 |
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| 81 | |||
| 82 | struct tun_pi { |
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| 83 | unsigned short flags; |
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| 84 | unsigned short proto; |
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| 85 | }; |
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| 86 | #define TUN_PKT_STRIP 0x0001 |
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| 87 | |||
| 88 | #endif /* __IF_TUN_H */ |