2 * Universal TUN/TAP device driver.
3 * Copyright (C) 1999-2000 Maxim Krasnyansky <max_mk@yahoo.com>
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.
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.
15 * $Id: if_tun.h,v 1.2 2001/06/01 18:39:47 davem Exp $
21 /* Uncomment to enable debugging */
22 /* #define TUN_DEBUG 1 */
24 #include <linux/types.h>
29 #define DBG if(tun->debug)printk
30 #define DBG1 if(debug==2)printk
37 struct list_head list;
43 wait_queue_head_t read_wait;
44 struct sk_buff_head readq;
46 struct net_device *dev;
48 struct fasync_struct *fasync;
50 unsigned long if_flags;
51 u8 dev_addr[ETH_ALEN];
60 #endif /* __KERNEL__ */
63 #define TUN_READQ_SIZE 500
65 /* TUN device flags */
66 #define TUN_TUN_DEV 0x0001
67 #define TUN_TAP_DEV 0x0002
68 #define TUN_TYPE_MASK 0x000f
70 #define TUN_FASYNC 0x0010
71 #define TUN_NOCHECKSUM 0x0020
72 #define TUN_NO_PI 0x0040
73 #define TUN_ONE_QUEUE 0x0080
74 #define TUN_PERSIST 0x0100
77 #define TUNSETNOCSUM _IOW('T', 200, int)
78 #define TUNSETDEBUG _IOW('T', 201, int)
79 #define TUNSETIFF _IOW('T', 202, int)
80 #define TUNSETPERSIST _IOW('T', 203, int)
81 #define TUNSETOWNER _IOW('T', 204, int)
82 #define TUNSETLINK _IOW('T', 205, int)
83 #define TUNSETGROUP _IOW('T', 206, int)
85 /* TUNSETIFF ifr flags */
86 #define IFF_TUN 0x0001
87 #define IFF_TAP 0x0002
88 #define IFF_NO_PI 0x1000
89 #define IFF_ONE_QUEUE 0x2000
95 #define TUN_PKT_STRIP 0x0001
97 #endif /* __IF_TUN_H */