projects / mirror_ubuntu-hirsute-kernel.git / blame
| 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. | |
| 1da177e4 LT |
14 | */ |
| 15 | ||
| 16 | #ifndef __IF_TUN_H | |
| 17 | #define __IF_TUN_H | |
| 18 | ||
| a3edb083 | 19 | #include <linux/types.h> |
| f271b2cc | 20 | #include <linux/if_ether.h> |
| a3edb083 | 21 | |
| 1da177e4 LT |
22 | /* Read queue size */ |
| 23 | #define TUN_READQ_SIZE 500 | |
| 24 | ||
| 25 | /* TUN device flags */ | |
| 26 | #define TUN_TUN_DEV 0x0001 | |
| 27 | #define TUN_TAP_DEV 0x0002 | |
| 28 | #define TUN_TYPE_MASK 0x000f | |
| 29 | ||
| 30 | #define TUN_FASYNC 0x0010 | |
| 31 | #define TUN_NOCHECKSUM 0x0020 | |
| 32 | #define TUN_NO_PI 0x0040 | |
| 33 | #define TUN_ONE_QUEUE 0x0080 | |
| 34 | #define TUN_PERSIST 0x0100 | |
| f43798c2 | 35 | #define TUN_VNET_HDR 0x0200 |
| 1da177e4 LT |
36 | |
| 37 | /* Ioctl defines */ | |
| 38 | #define TUNSETNOCSUM _IOW('T', 200, int) | |
| 39 | #define TUNSETDEBUG _IOW('T', 201, int) | |
| 40 | #define TUNSETIFF _IOW('T', 202, int) | |
| 41 | #define TUNSETPERSIST _IOW('T', 203, int) | |
| 42 | #define TUNSETOWNER _IOW('T', 204, int) | |
| ff4cc3ac | 43 | #define TUNSETLINK _IOW('T', 205, int) |
| 8c644623 | 44 | #define TUNSETGROUP _IOW('T', 206, int) |
| 07240fd0 | 45 | #define TUNGETFEATURES _IOR('T', 207, unsigned int) |
| f271b2cc MK |
46 | #define TUNSETOFFLOAD _IOW('T', 208, unsigned int) |
| 47 | #define TUNSETTXFILTER _IOW('T', 209, unsigned int) | |
| e3b99556 | 48 | #define TUNGETIFF _IOR('T', 210, unsigned int) |
| 1da177e4 LT |
49 | |
| 50 | /* TUNSETIFF ifr flags */ | |
| 51 | #define IFF_TUN 0x0001 | |
| 52 | #define IFF_TAP 0x0002 | |
| 53 | #define IFF_NO_PI 0x1000 | |
| 54 | #define IFF_ONE_QUEUE 0x2000 | |
| f43798c2 | 55 | #define IFF_VNET_HDR 0x4000 |
| 1da177e4 | 56 | |
| 5228ddc9 RR |
57 | /* Features for GSO (TUNSETOFFLOAD). */ |
| 58 | #define TUN_F_CSUM 0x01 /* You can hand me unchecksummed packets. */ | |
| 59 | #define TUN_F_TSO4 0x02 /* I can handle TSO for IPv4 packets */ | |
| 60 | #define TUN_F_TSO6 0x04 /* I can handle TSO for IPv6 packets */ | |
| 61 | #define TUN_F_TSO_ECN 0x08 /* I can handle TSO with ECN bits. */ | |
| 62 | ||
| f271b2cc MK |
63 | /* Protocol info prepended to the packets (when IFF_NO_PI is not set) */ |
| 64 | #define TUN_PKT_STRIP 0x0001 | |
| 1da177e4 | 65 | struct tun_pi { |
| f271b2cc | 66 | __u16 flags; |
| a3edb083 | 67 | __be16 proto; |
| 1da177e4 | 68 | }; |
| f271b2cc MK |
69 | |
| 70 | /* | |
| 71 | * Filter spec (used for SETXXFILTER ioctls) | |
| 72 | * This stuff is applicable only to the TAP (Ethernet) devices. | |
| 73 | * If the count is zero the filter is disabled and the driver accepts | |
| 74 | * all packets (promisc mode). | |
| 75 | * If the filter is enabled in order to accept broadcast packets | |
| 76 | * broadcast addr must be explicitly included in the addr list. | |
| 77 | */ | |
| 78 | #define TUN_FLT_ALLMULTI 0x0001 /* Accept all multicast packets */ | |
| 79 | struct tun_filter { | |
| 80 | __u16 flags; /* TUN_FLT_ flags see above */ | |
| 81 | __u16 count; /* Number of addresses */ | |
| 82 | __u8 addr[0][ETH_ALEN]; | |
| 83 | }; | |
| 1da177e4 LT |
84 | |
| 85 | #endif /* __IF_TUN_H */ |