~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 | * | |
| ff05a229 | 15 | * $Id: if_tun.h,v 1.1 2001/11/21 14:54:03 steve Exp $ |
| 4efd681a SE |
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 { | |
| df1b18fc | 35 | char *name; |
| 4efd681a | 36 | unsigned long flags; |
| df1b18fc SE |
37 | int attached; |
| 38 | uid_t owner; | |
| 4efd681a | 39 | |
| 4efd681a | 40 | wait_queue_head_t read_wait; |
| df1b18fc | 41 | struct sk_buff_head readq; |
| 4efd681a SE |
42 | |
| 43 | struct net_device dev; | |
| df1b18fc SE |
44 | struct net_device_stats stats; |
| 45 | ||
| 46 | struct fasync_struct *fasync; | |
| 4efd681a SE |
47 | |
| 48 | #ifdef TUN_DEBUG | |
| 49 | int debug; | |
| 50 | #endif | |
| 51 | }; | |
| 52 | ||
| 53 | #ifndef MIN | |
| 54 | #define MIN(a,b) ( (a)<(b) ? (a):(b) ) | |
| 55 | #endif | |
| 56 | ||
| 57 | #endif /* __KERNEL__ */ | |
| 58 | ||
| df1b18fc SE |
59 | /* Read queue size */ |
| 60 | #define TUN_READQ_SIZE 10 | |
| 4efd681a SE |
61 | |
| 62 | /* TUN device flags */ | |
| 63 | #define TUN_TUN_DEV 0x0001 | |
| 64 | #define TUN_TAP_DEV 0x0002 | |
| 65 | #define TUN_TYPE_MASK 0x000f | |
| 66 | ||
| 67 | #define TUN_FASYNC 0x0010 | |
| 68 | #define TUN_NOCHECKSUM 0x0020 | |
| 69 | #define TUN_NO_PI 0x0040 | |
| df1b18fc SE |
70 | #define TUN_ONE_QUEUE 0x0080 |
| 71 | #define TUN_PERSIST 0x0100 | |
| 4efd681a SE |
72 | |
| 73 | /* Ioctl defines */ | |
| df1b18fc SE |
74 | #define TUNSETNOCSUM _IOW('T', 200, int) |
| 75 | #define TUNSETDEBUG _IOW('T', 201, int) | |
| 76 | #define TUNSETIFF _IOW('T', 202, int) | |
| 77 | #define TUNSETPERSIST _IOW('T', 203, int) | |
| 78 | #define TUNSETOWNER _IOW('T', 204, int) | |
| 4efd681a SE |
79 | |
| 80 | /* TUNSETIFF ifr flags */ | |
| 81 | #define IFF_TUN 0x0001 | |
| 82 | #define IFF_TAP 0x0002 | |
| 83 | #define IFF_NO_PI 0x1000 | |
| df1b18fc | 84 | #define IFF_ONE_QUEUE 0x2000 |
| 4efd681a SE |
85 | |
| 86 | struct tun_pi { | |
| df1b18fc SE |
87 | unsigned short flags; |
| 88 | unsigned short proto; | |
| 4efd681a SE |
89 | }; |
| 90 | #define TUN_PKT_STRIP 0x0001 | |
| 91 | ||
| 92 | #endif /* __IF_TUN_H */ |