Christopher Ferris | 2598113 | 2017-11-14 16:53:49 -0800 | [diff] [blame^] | 1 | /* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note */ |
Ben Cheng | 224b54f | 2013-10-15 18:26:18 -0700 | [diff] [blame] | 2 | /* |
| 3 | * Universal TUN/TAP device driver. |
| 4 | * Copyright (C) 1999-2000 Maxim Krasnyansky <max_mk@yahoo.com> |
| 5 | * |
| 6 | * This program is free software; you can redistribute it and/or modify |
| 7 | * it under the terms of the GNU General Public License as published by |
| 8 | * the Free Software Foundation; either version 2 of the License, or |
| 9 | * (at your option) any later version. |
| 10 | * |
| 11 | * This program is distributed in the hope that it will be useful, |
| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 14 | * GNU General Public License for more details. |
| 15 | */ |
| 16 | |
| 17 | #ifndef _UAPI__IF_TUN_H |
| 18 | #define _UAPI__IF_TUN_H |
| 19 | |
| 20 | #include <linux/types.h> |
| 21 | #include <linux/if_ether.h> |
| 22 | #include <linux/filter.h> |
| 23 | |
| 24 | /* Read queue size */ |
| 25 | #define TUN_READQ_SIZE 500 |
Christopher Ferris | 12e1f28 | 2016-02-04 12:35:07 -0800 | [diff] [blame] | 26 | /* TUN device type flags: deprecated. Use IFF_TUN/IFF_TAP instead. */ |
| 27 | #define TUN_TUN_DEV IFF_TUN |
| 28 | #define TUN_TAP_DEV IFF_TAP |
Ben Cheng | 224b54f | 2013-10-15 18:26:18 -0700 | [diff] [blame] | 29 | #define TUN_TYPE_MASK 0x000f |
| 30 | |
Ben Cheng | 224b54f | 2013-10-15 18:26:18 -0700 | [diff] [blame] | 31 | /* Ioctl defines */ |
| 32 | #define TUNSETNOCSUM _IOW('T', 200, int) |
| 33 | #define TUNSETDEBUG _IOW('T', 201, int) |
| 34 | #define TUNSETIFF _IOW('T', 202, int) |
| 35 | #define TUNSETPERSIST _IOW('T', 203, int) |
| 36 | #define TUNSETOWNER _IOW('T', 204, int) |
| 37 | #define TUNSETLINK _IOW('T', 205, int) |
| 38 | #define TUNSETGROUP _IOW('T', 206, int) |
| 39 | #define TUNGETFEATURES _IOR('T', 207, unsigned int) |
| 40 | #define TUNSETOFFLOAD _IOW('T', 208, unsigned int) |
| 41 | #define TUNSETTXFILTER _IOW('T', 209, unsigned int) |
| 42 | #define TUNGETIFF _IOR('T', 210, unsigned int) |
| 43 | #define TUNGETSNDBUF _IOR('T', 211, int) |
| 44 | #define TUNSETSNDBUF _IOW('T', 212, int) |
| 45 | #define TUNATTACHFILTER _IOW('T', 213, struct sock_fprog) |
| 46 | #define TUNDETACHFILTER _IOW('T', 214, struct sock_fprog) |
| 47 | #define TUNGETVNETHDRSZ _IOR('T', 215, int) |
| 48 | #define TUNSETVNETHDRSZ _IOW('T', 216, int) |
| 49 | #define TUNSETQUEUE _IOW('T', 217, int) |
Christopher Ferris | e084501 | 2014-07-09 14:58:51 -0700 | [diff] [blame] | 50 | #define TUNSETIFINDEX _IOW('T', 218, unsigned int) |
| 51 | #define TUNGETFILTER _IOR('T', 219, struct sock_fprog) |
Christopher Ferris | 12e1f28 | 2016-02-04 12:35:07 -0800 | [diff] [blame] | 52 | #define TUNSETVNETLE _IOW('T', 220, int) |
| 53 | #define TUNGETVNETLE _IOR('T', 221, int) |
| 54 | /* The TUNSETVNETBE and TUNGETVNETBE ioctls are for cross-endian support on |
| 55 | * little-endian hosts. Not all kernel configurations support them, but all |
| 56 | * configurations that support SET also support GET. |
| 57 | */ |
| 58 | #define TUNSETVNETBE _IOW('T', 222, int) |
| 59 | #define TUNGETVNETBE _IOR('T', 223, int) |
Ben Cheng | 224b54f | 2013-10-15 18:26:18 -0700 | [diff] [blame] | 60 | |
| 61 | /* TUNSETIFF ifr flags */ |
| 62 | #define IFF_TUN 0x0001 |
| 63 | #define IFF_TAP 0x0002 |
| 64 | #define IFF_NO_PI 0x1000 |
| 65 | /* This flag has no real effect */ |
| 66 | #define IFF_ONE_QUEUE 0x2000 |
| 67 | #define IFF_VNET_HDR 0x4000 |
| 68 | #define IFF_TUN_EXCL 0x8000 |
| 69 | #define IFF_MULTI_QUEUE 0x0100 |
| 70 | #define IFF_ATTACH_QUEUE 0x0200 |
| 71 | #define IFF_DETACH_QUEUE 0x0400 |
Christopher Ferris | e084501 | 2014-07-09 14:58:51 -0700 | [diff] [blame] | 72 | /* read-only flag */ |
| 73 | #define IFF_PERSIST 0x0800 |
| 74 | #define IFF_NOFILTER 0x1000 |
| 75 | |
| 76 | /* Socket options */ |
| 77 | #define TUN_TX_TIMESTAMP 1 |
Ben Cheng | 224b54f | 2013-10-15 18:26:18 -0700 | [diff] [blame] | 78 | |
| 79 | /* Features for GSO (TUNSETOFFLOAD). */ |
| 80 | #define TUN_F_CSUM 0x01 /* You can hand me unchecksummed packets. */ |
| 81 | #define TUN_F_TSO4 0x02 /* I can handle TSO for IPv4 packets */ |
| 82 | #define TUN_F_TSO6 0x04 /* I can handle TSO for IPv6 packets */ |
| 83 | #define TUN_F_TSO_ECN 0x08 /* I can handle TSO with ECN bits. */ |
| 84 | #define TUN_F_UFO 0x10 /* I can handle UFO packets */ |
| 85 | |
| 86 | /* Protocol info prepended to the packets (when IFF_NO_PI is not set) */ |
| 87 | #define TUN_PKT_STRIP 0x0001 |
| 88 | struct tun_pi { |
| 89 | __u16 flags; |
| 90 | __be16 proto; |
| 91 | }; |
| 92 | |
| 93 | /* |
| 94 | * Filter spec (used for SETXXFILTER ioctls) |
| 95 | * This stuff is applicable only to the TAP (Ethernet) devices. |
| 96 | * If the count is zero the filter is disabled and the driver accepts |
| 97 | * all packets (promisc mode). |
| 98 | * If the filter is enabled in order to accept broadcast packets |
| 99 | * broadcast addr must be explicitly included in the addr list. |
| 100 | */ |
| 101 | #define TUN_FLT_ALLMULTI 0x0001 /* Accept all multicast packets */ |
| 102 | struct tun_filter { |
| 103 | __u16 flags; /* TUN_FLT_ flags see above */ |
| 104 | __u16 count; /* Number of addresses */ |
| 105 | __u8 addr[0][ETH_ALEN]; |
| 106 | }; |
| 107 | |
| 108 | #endif /* _UAPI__IF_TUN_H */ |