Subversion Repositories shark

Rev

Rev 422 | Details | Compare with Previous | Last modification | View Log | RSS feed

Rev Author Line No. Line
422 giacomo 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 2004-01-28 15:25:37 giacomo 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
        struct list_head        list;
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
#endif /* __KERNEL__ */
54
 
55
/* Read queue size */
56
#define TUN_READQ_SIZE  10
57
 
58
/* TUN device flags */
59
#define TUN_TUN_DEV     0x0001  
60
#define TUN_TAP_DEV     0x0002
61
#define TUN_TYPE_MASK   0x000f
62
 
63
#define TUN_FASYNC      0x0010
64
#define TUN_NOCHECKSUM  0x0020
65
#define TUN_NO_PI       0x0040
66
#define TUN_ONE_QUEUE   0x0080
67
#define TUN_PERSIST     0x0100  
68
 
69
/* Ioctl defines */
70
#define TUNSETNOCSUM  _IOW('T', 200, int) 
71
#define TUNSETDEBUG   _IOW('T', 201, int) 
72
#define TUNSETIFF     _IOW('T', 202, int) 
73
#define TUNSETPERSIST _IOW('T', 203, int) 
74
#define TUNSETOWNER   _IOW('T', 204, int)
75
 
76
/* TUNSETIFF ifr flags */
77
#define IFF_TUN         0x0001
78
#define IFF_TAP         0x0002
79
#define IFF_NO_PI       0x1000
80
#define IFF_ONE_QUEUE   0x2000
81
 
82
struct tun_pi {
83
        unsigned short flags;
84
        unsigned short proto;
85
};
86
#define TUN_PKT_STRIP   0x0001
87
 
88
#endif /* __IF_TUN_H */