| | 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 1.1 2001/11/21 14:54:03 steve 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; |
| | 36 | unsigned long flags; |
| | 37 | int attached; |
| | 38 | uid_t owner; |
| | 39 | |
| | 40 | wait_queue_head_t read_wait; |
| | 41 | struct sk_buff_head readq; |
| | 42 | |
| | 43 | struct net_device dev; |
| | 44 | struct net_device_stats stats; |
| | 45 | |
| | 46 | struct fasync_struct *fasync; |
| | 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 | |
| | 59 | /* Read queue size */ |
| | 60 | #define TUN_READQ_SIZE 10 |
| | 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 |
| | 70 | #define TUN_ONE_QUEUE 0x0080 |
| | 71 | #define TUN_PERSIST 0x0100 |
| | 72 | |
| | 73 | /* Ioctl defines */ |
| | 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) |
| | 79 | |
| | 80 | /* TUNSETIFF ifr flags */ |
| | 81 | #define IFF_TUN 0x0001 |
| | 82 | #define IFF_TAP 0x0002 |
| | 83 | #define IFF_NO_PI 0x1000 |
| | 84 | #define IFF_ONE_QUEUE 0x2000 |
| | 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 */ |
~mdw / secnet / blame_incremental