if_tun.h
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- /*
- * Universal TUN/TAP device driver.
- * Copyright (C) 1999-2000 Maxim Krasnyansky <max_mk@yahoo.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * $Id: if_tun.h,v 1.2 2001/06/01 18:39:47 davem Exp $
- */
- #ifndef __IF_TUN_H
- #define __IF_TUN_H
- /* Uncomment to enable debugging */
- /* #define TUN_DEBUG 1 */
- #ifdef __KERNEL__
- #ifdef TUN_DEBUG
- #define DBG if(tun->debug)printk
- #define DBG1 if(debug==2)printk
- #else
- #define DBG( a... )
- #define DBG1( a... )
- #endif
- struct tun_struct {
- char *name;
- unsigned long flags;
- int attached;
- uid_t owner;
- wait_queue_head_t read_wait;
- struct sk_buff_head readq;
- struct net_device dev;
- struct net_device_stats stats;
- struct fasync_struct *fasync;
- #ifdef TUN_DEBUG
- int debug;
- #endif
- };
- #ifndef MIN
- #define MIN(a,b) ( (a)<(b) ? (a):(b) )
- #endif
- #endif /* __KERNEL__ */
- /* Read queue size */
- #define TUN_READQ_SIZE 10
- /* TUN device flags */
- #define TUN_TUN_DEV 0x0001
- #define TUN_TAP_DEV 0x0002
- #define TUN_TYPE_MASK 0x000f
- #define TUN_FASYNC 0x0010
- #define TUN_NOCHECKSUM 0x0020
- #define TUN_NO_PI 0x0040
- #define TUN_ONE_QUEUE 0x0080
- #define TUN_PERSIST 0x0100
- /* Ioctl defines */
- #define TUNSETNOCSUM _IOW('T', 200, int)
- #define TUNSETDEBUG _IOW('T', 201, int)
- #define TUNSETIFF _IOW('T', 202, int)
- #define TUNSETPERSIST _IOW('T', 203, int)
- #define TUNSETOWNER _IOW('T', 204, int)
- /* TUNSETIFF ifr flags */
- #define IFF_TUN 0x0001
- #define IFF_TAP 0x0002
- #define IFF_NO_PI 0x1000
- #define IFF_ONE_QUEUE 0x2000
- struct tun_pi {
- unsigned short flags;
- unsigned short proto;
- };
- #define TUN_PKT_STRIP 0x0001
- #endif /* __IF_TUN_H */