Commit | Line | Data |
---|---|---|
1da177e4 LT |
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 1.2 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 | ||
a3edb083 AV |
24 | #include <linux/types.h> |
25 | ||
1da177e4 LT |
26 | #ifdef __KERNEL__ |
27 | ||
28 | #ifdef TUN_DEBUG | |
29 | #define DBG if(tun->debug)printk | |
30 | #define DBG1 if(debug==2)printk | |
31 | #else | |
32 | #define DBG( a... ) | |
33 | #define DBG1( a... ) | |
34 | #endif | |
35 | ||
36 | struct tun_struct { | |
37 | struct list_head list; | |
38 | unsigned long flags; | |
39 | int attached; | |
40 | uid_t owner; | |
8c644623 | 41 | gid_t group; |
1da177e4 LT |
42 | |
43 | wait_queue_head_t read_wait; | |
44 | struct sk_buff_head readq; | |
45 | ||
46 | struct net_device *dev; | |
1da177e4 LT |
47 | |
48 | struct fasync_struct *fasync; | |
49 | ||
50 | unsigned long if_flags; | |
51 | u8 dev_addr[ETH_ALEN]; | |
52 | u32 chr_filter[2]; | |
53 | u32 net_filter[2]; | |
54 | ||
55 | #ifdef TUN_DEBUG | |
56 | int debug; | |
57 | #endif | |
58 | }; | |
59 | ||
60 | #endif /* __KERNEL__ */ | |
61 | ||
62 | /* Read queue size */ | |
63 | #define TUN_READQ_SIZE 500 | |
64 | ||
65 | /* TUN device flags */ | |
66 | #define TUN_TUN_DEV 0x0001 | |
67 | #define TUN_TAP_DEV 0x0002 | |
68 | #define TUN_TYPE_MASK 0x000f | |
69 | ||
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 | |
75 | ||
76 | /* Ioctl defines */ | |
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) | |
ff4cc3ac | 82 | #define TUNSETLINK _IOW('T', 205, int) |
8c644623 | 83 | #define TUNSETGROUP _IOW('T', 206, int) |
1da177e4 LT |
84 | |
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 | |
90 | ||
91 | struct tun_pi { | |
92 | unsigned short flags; | |
a3edb083 | 93 | __be16 proto; |
1da177e4 LT |
94 | }; |
95 | #define TUN_PKT_STRIP 0x0001 | |
96 | ||
97 | #endif /* __IF_TUN_H */ |