1 /* 2 * Universal TUN/TAP device driver. 3 * Copyright (C) 1999-2000 Maxim Krasnyansky <max_mk (at) 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 1.2 2001/06/01 18:39:47 davem 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 25 /* Read queue size */ 26 #define TUN_READQ_SIZE 500 27 28 /* TUN device flags */ 29 #define TUN_TUN_DEV 0x0001 30 #define TUN_TAP_DEV 0x0002 31 #define TUN_TYPE_MASK 0x000f 32 33 #define TUN_FASYNC 0x0010 34 #define TUN_NOCHECKSUM 0x0020 35 #define TUN_NO_PI 0x0040 36 #define TUN_ONE_QUEUE 0x0080 37 #define TUN_PERSIST 0x0100 38 39 /* Ioctl defines */ 40 #define TUNSETNOCSUM _IOW('T', 200, int) 41 #define TUNSETDEBUG _IOW('T', 201, int) 42 #define TUNSETIFF _IOW('T', 202, int) 43 #define TUNSETPERSIST _IOW('T', 203, int) 44 #define TUNSETOWNER _IOW('T', 204, int) 45 #define TUNSETLINK _IOW('T', 205, int) 46 #define TUNSETGROUP _IOW('T', 206, int) 47 48 /* TUNSETIFF ifr flags */ 49 #define IFF_TUN 0x0001 50 #define IFF_TAP 0x0002 51 #define IFF_NO_PI 0x1000 52 #define IFF_ONE_QUEUE 0x2000 53 54 struct tun_pi { 55 unsigned short flags; 56 unsigned short proto; 57 }; 58 #define TUN_PKT_STRIP 0x0001 59 60 #endif /* __IF_TUN_H */ 61
