~mdw / secnet / blame
| Commit | Line | Data |
|---|---|---|
| 4efd681a SE |
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 1.5 2000/10/24 05:13:08 maxk Exp $ | |
| 16 | */ | |
| 17 | ||
| 18 | #ifndef __IF_TUN_H | |
| 19 | #define __IF_TUN_H | |
| 20 | ||
| 21 | /* Uncomment to enable debugging */ | |
| 22 | /* #define TUN_DEBUG 1 */ | |
| 23 | ||
| 24 | #ifdef __KERNEL__ | |
| 25 | ||
| 26 | #ifdef TUN_DEBUG | |
| 27 | #define DBG if(tun->debug)printk | |
| 28 | #define DBG1 if(debug==2)printk | |
| 29 | #else | |
| 30 | #define DBG( a... ) | |
| 31 | #define DBG1( a... ) | |
| 32 | #endif | |
| 33 | ||
| 34 | struct tun_struct { | |
| 35 | char name[8]; | |
| 36 | unsigned long flags; | |
| 37 | ||
| 38 | struct fasync_struct *fasync; | |
| 39 | wait_queue_head_t read_wait; | |
| 40 | ||
| 41 | struct net_device dev; | |
| 42 | struct sk_buff_head txq; | |
| 43 | struct net_device_stats stats; | |
| 44 | ||
| 45 | #ifdef TUN_DEBUG | |
| 46 | int debug; | |
| 47 | #endif | |
| 48 | }; | |
| 49 | ||
| 50 | #ifndef MIN | |
| 51 | #define MIN(a,b) ( (a)<(b) ? (a):(b) ) | |
| 52 | #endif | |
| 53 | ||
| 54 | #endif /* __KERNEL__ */ | |
| 55 | ||
| 56 | /* Number of devices */ | |
| 57 | #define TUN_MAX_DEV 255 | |
| 58 | ||
| 59 | /* TX queue size */ | |
| 60 | #define TUN_TXQ_SIZE 10 | |
| 61 | ||
| 62 | /* Max frame size */ | |
| 63 | #define TUN_MAX_FRAME 4096 | |
| 64 | ||
| 65 | /* TUN device flags */ | |
| 66 | #define TUN_TUN_DEV 0x0001 | |
| 67 | #define TUN_TAP_DEV 0x0002 | |
| 68 | #define TUN_TYPE_MASK 0x000f | |
| 69 | ||
| 70 | #define TUN_FASYNC 0x0010 | |
| 71 | #define TUN_NOCHECKSUM 0x0020 | |
| 72 | #define TUN_NO_PI 0x0040 | |
| 73 | ||
| 74 | #define TUN_IFF_SET 0x1000 | |
| 75 | ||
| 76 | /* Ioctl defines */ | |
| 77 | #define TUNSETNOCSUM (('T'<< 8) | 200) | |
| 78 | #define TUNSETDEBUG (('T'<< 8) | 201) | |
| 79 | #define TUNSETIFF (('T'<< 8) | 202) | |
| 80 | ||
| 81 | /* TUNSETIFF ifr flags */ | |
| 82 | #define IFF_TUN 0x0001 | |
| 83 | #define IFF_TAP 0x0002 | |
| 84 | #define IFF_NO_PI 0x1000 | |
| 85 | ||
| 86 | struct tun_pi { | |
| 87 | unsigned short flags; | |
| 88 | unsigned short proto; | |
| 89 | }; | |
| 90 | #define TUN_PKT_STRIP 0x0001 | |
| 91 | ||
| 92 | #endif /* __IF_TUN_H */ |