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 */
27 #define DBG if(tun->debug)printk
28 #define DBG1 if(debug==2)printk
40 wait_queue_head_t read_wait;
41 struct sk_buff_head readq;
43 struct net_device dev;
44 struct net_device_stats stats;
46 struct fasync_struct *fasync;
54 #define MIN(a,b) ( (a)<(b) ? (a):(b) )
57 #endif /* __KERNEL__ */
60 #define TUN_READQ_SIZE 10
62 /* TUN device flags */
63 #define TUN_TUN_DEV 0x0001
64 #define TUN_TAP_DEV 0x0002
65 #define TUN_TYPE_MASK 0x000f
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
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)
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
90 #define TUN_PKT_STRIP 0x0001
92 #endif /* __IF_TUN_H */