1224b54f69543a5c0ec18f99bd717d2b724582eb6Ben Cheng/* 2224b54f69543a5c0ec18f99bd717d2b724582eb6Ben Cheng * Universal TUN/TAP device driver. 3224b54f69543a5c0ec18f99bd717d2b724582eb6Ben Cheng * Copyright (C) 1999-2000 Maxim Krasnyansky <max_mk@yahoo.com> 4224b54f69543a5c0ec18f99bd717d2b724582eb6Ben Cheng * 5224b54f69543a5c0ec18f99bd717d2b724582eb6Ben Cheng * This program is free software; you can redistribute it and/or modify 6224b54f69543a5c0ec18f99bd717d2b724582eb6Ben Cheng * it under the terms of the GNU General Public License as published by 7224b54f69543a5c0ec18f99bd717d2b724582eb6Ben Cheng * the Free Software Foundation; either version 2 of the License, or 8224b54f69543a5c0ec18f99bd717d2b724582eb6Ben Cheng * (at your option) any later version. 9224b54f69543a5c0ec18f99bd717d2b724582eb6Ben Cheng * 10224b54f69543a5c0ec18f99bd717d2b724582eb6Ben Cheng * This program is distributed in the hope that it will be useful, 11224b54f69543a5c0ec18f99bd717d2b724582eb6Ben Cheng * but WITHOUT ANY WARRANTY; without even the implied warranty of 12224b54f69543a5c0ec18f99bd717d2b724582eb6Ben Cheng * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 13224b54f69543a5c0ec18f99bd717d2b724582eb6Ben Cheng * GNU General Public License for more details. 14224b54f69543a5c0ec18f99bd717d2b724582eb6Ben Cheng */ 15224b54f69543a5c0ec18f99bd717d2b724582eb6Ben Cheng 16224b54f69543a5c0ec18f99bd717d2b724582eb6Ben Cheng#ifndef _UAPI__IF_TUN_H 17224b54f69543a5c0ec18f99bd717d2b724582eb6Ben Cheng#define _UAPI__IF_TUN_H 18224b54f69543a5c0ec18f99bd717d2b724582eb6Ben Cheng 19224b54f69543a5c0ec18f99bd717d2b724582eb6Ben Cheng#include <linux/types.h> 20224b54f69543a5c0ec18f99bd717d2b724582eb6Ben Cheng#include <linux/if_ether.h> 21224b54f69543a5c0ec18f99bd717d2b724582eb6Ben Cheng#include <linux/filter.h> 22224b54f69543a5c0ec18f99bd717d2b724582eb6Ben Cheng 23224b54f69543a5c0ec18f99bd717d2b724582eb6Ben Cheng/* Read queue size */ 24224b54f69543a5c0ec18f99bd717d2b724582eb6Ben Cheng#define TUN_READQ_SIZE 500 25224b54f69543a5c0ec18f99bd717d2b724582eb6Ben Cheng 26224b54f69543a5c0ec18f99bd717d2b724582eb6Ben Cheng/* TUN device flags */ 27224b54f69543a5c0ec18f99bd717d2b724582eb6Ben Cheng#define TUN_TUN_DEV 0x0001 28224b54f69543a5c0ec18f99bd717d2b724582eb6Ben Cheng#define TUN_TAP_DEV 0x0002 29224b54f69543a5c0ec18f99bd717d2b724582eb6Ben Cheng#define TUN_TYPE_MASK 0x000f 30224b54f69543a5c0ec18f99bd717d2b724582eb6Ben Cheng 31224b54f69543a5c0ec18f99bd717d2b724582eb6Ben Cheng#define TUN_FASYNC 0x0010 32224b54f69543a5c0ec18f99bd717d2b724582eb6Ben Cheng#define TUN_NOCHECKSUM 0x0020 33224b54f69543a5c0ec18f99bd717d2b724582eb6Ben Cheng#define TUN_NO_PI 0x0040 34224b54f69543a5c0ec18f99bd717d2b724582eb6Ben Cheng/* This flag has no real effect */ 35224b54f69543a5c0ec18f99bd717d2b724582eb6Ben Cheng#define TUN_ONE_QUEUE 0x0080 36224b54f69543a5c0ec18f99bd717d2b724582eb6Ben Cheng#define TUN_PERSIST 0x0100 37224b54f69543a5c0ec18f99bd717d2b724582eb6Ben Cheng#define TUN_VNET_HDR 0x0200 38224b54f69543a5c0ec18f99bd717d2b724582eb6Ben Cheng#define TUN_TAP_MQ 0x0400 39224b54f69543a5c0ec18f99bd717d2b724582eb6Ben Cheng 40224b54f69543a5c0ec18f99bd717d2b724582eb6Ben Cheng/* Ioctl defines */ 41224b54f69543a5c0ec18f99bd717d2b724582eb6Ben Cheng#define TUNSETNOCSUM _IOW('T', 200, int) 42224b54f69543a5c0ec18f99bd717d2b724582eb6Ben Cheng#define TUNSETDEBUG _IOW('T', 201, int) 43224b54f69543a5c0ec18f99bd717d2b724582eb6Ben Cheng#define TUNSETIFF _IOW('T', 202, int) 44224b54f69543a5c0ec18f99bd717d2b724582eb6Ben Cheng#define TUNSETPERSIST _IOW('T', 203, int) 45224b54f69543a5c0ec18f99bd717d2b724582eb6Ben Cheng#define TUNSETOWNER _IOW('T', 204, int) 46224b54f69543a5c0ec18f99bd717d2b724582eb6Ben Cheng#define TUNSETLINK _IOW('T', 205, int) 47224b54f69543a5c0ec18f99bd717d2b724582eb6Ben Cheng#define TUNSETGROUP _IOW('T', 206, int) 48224b54f69543a5c0ec18f99bd717d2b724582eb6Ben Cheng#define TUNGETFEATURES _IOR('T', 207, unsigned int) 49224b54f69543a5c0ec18f99bd717d2b724582eb6Ben Cheng#define TUNSETOFFLOAD _IOW('T', 208, unsigned int) 50224b54f69543a5c0ec18f99bd717d2b724582eb6Ben Cheng#define TUNSETTXFILTER _IOW('T', 209, unsigned int) 51224b54f69543a5c0ec18f99bd717d2b724582eb6Ben Cheng#define TUNGETIFF _IOR('T', 210, unsigned int) 52224b54f69543a5c0ec18f99bd717d2b724582eb6Ben Cheng#define TUNGETSNDBUF _IOR('T', 211, int) 53224b54f69543a5c0ec18f99bd717d2b724582eb6Ben Cheng#define TUNSETSNDBUF _IOW('T', 212, int) 54224b54f69543a5c0ec18f99bd717d2b724582eb6Ben Cheng#define TUNATTACHFILTER _IOW('T', 213, struct sock_fprog) 55224b54f69543a5c0ec18f99bd717d2b724582eb6Ben Cheng#define TUNDETACHFILTER _IOW('T', 214, struct sock_fprog) 56224b54f69543a5c0ec18f99bd717d2b724582eb6Ben Cheng#define TUNGETVNETHDRSZ _IOR('T', 215, int) 57224b54f69543a5c0ec18f99bd717d2b724582eb6Ben Cheng#define TUNSETVNETHDRSZ _IOW('T', 216, int) 58224b54f69543a5c0ec18f99bd717d2b724582eb6Ben Cheng#define TUNSETQUEUE _IOW('T', 217, int) 59e87eaf040ab639e94ed0a58ff0eac68d1d38fb0aEd Heyl#define TUNSETIFINDEX _IOW('T', 218, unsigned int) 60e87eaf040ab639e94ed0a58ff0eac68d1d38fb0aEd Heyl#define TUNGETFILTER _IOR('T', 219, struct sock_fprog) 61224b54f69543a5c0ec18f99bd717d2b724582eb6Ben Cheng 62224b54f69543a5c0ec18f99bd717d2b724582eb6Ben Cheng/* TUNSETIFF ifr flags */ 63224b54f69543a5c0ec18f99bd717d2b724582eb6Ben Cheng#define IFF_TUN 0x0001 64224b54f69543a5c0ec18f99bd717d2b724582eb6Ben Cheng#define IFF_TAP 0x0002 65224b54f69543a5c0ec18f99bd717d2b724582eb6Ben Cheng#define IFF_NO_PI 0x1000 66224b54f69543a5c0ec18f99bd717d2b724582eb6Ben Cheng/* This flag has no real effect */ 67224b54f69543a5c0ec18f99bd717d2b724582eb6Ben Cheng#define IFF_ONE_QUEUE 0x2000 68224b54f69543a5c0ec18f99bd717d2b724582eb6Ben Cheng#define IFF_VNET_HDR 0x4000 69224b54f69543a5c0ec18f99bd717d2b724582eb6Ben Cheng#define IFF_TUN_EXCL 0x8000 70224b54f69543a5c0ec18f99bd717d2b724582eb6Ben Cheng#define IFF_MULTI_QUEUE 0x0100 71224b54f69543a5c0ec18f99bd717d2b724582eb6Ben Cheng#define IFF_ATTACH_QUEUE 0x0200 72224b54f69543a5c0ec18f99bd717d2b724582eb6Ben Cheng#define IFF_DETACH_QUEUE 0x0400 73e87eaf040ab639e94ed0a58ff0eac68d1d38fb0aEd Heyl/* read-only flag */ 74e87eaf040ab639e94ed0a58ff0eac68d1d38fb0aEd Heyl#define IFF_PERSIST 0x0800 75e87eaf040ab639e94ed0a58ff0eac68d1d38fb0aEd Heyl#define IFF_NOFILTER 0x1000 76e87eaf040ab639e94ed0a58ff0eac68d1d38fb0aEd Heyl 77e87eaf040ab639e94ed0a58ff0eac68d1d38fb0aEd Heyl/* Socket options */ 78e87eaf040ab639e94ed0a58ff0eac68d1d38fb0aEd Heyl#define TUN_TX_TIMESTAMP 1 79224b54f69543a5c0ec18f99bd717d2b724582eb6Ben Cheng 80224b54f69543a5c0ec18f99bd717d2b724582eb6Ben Cheng/* Features for GSO (TUNSETOFFLOAD). */ 81224b54f69543a5c0ec18f99bd717d2b724582eb6Ben Cheng#define TUN_F_CSUM 0x01 /* You can hand me unchecksummed packets. */ 82224b54f69543a5c0ec18f99bd717d2b724582eb6Ben Cheng#define TUN_F_TSO4 0x02 /* I can handle TSO for IPv4 packets */ 83224b54f69543a5c0ec18f99bd717d2b724582eb6Ben Cheng#define TUN_F_TSO6 0x04 /* I can handle TSO for IPv6 packets */ 84224b54f69543a5c0ec18f99bd717d2b724582eb6Ben Cheng#define TUN_F_TSO_ECN 0x08 /* I can handle TSO with ECN bits. */ 85224b54f69543a5c0ec18f99bd717d2b724582eb6Ben Cheng#define TUN_F_UFO 0x10 /* I can handle UFO packets */ 86224b54f69543a5c0ec18f99bd717d2b724582eb6Ben Cheng 87224b54f69543a5c0ec18f99bd717d2b724582eb6Ben Cheng/* Protocol info prepended to the packets (when IFF_NO_PI is not set) */ 88224b54f69543a5c0ec18f99bd717d2b724582eb6Ben Cheng#define TUN_PKT_STRIP 0x0001 89224b54f69543a5c0ec18f99bd717d2b724582eb6Ben Chengstruct tun_pi { 90224b54f69543a5c0ec18f99bd717d2b724582eb6Ben Cheng __u16 flags; 91224b54f69543a5c0ec18f99bd717d2b724582eb6Ben Cheng __be16 proto; 92224b54f69543a5c0ec18f99bd717d2b724582eb6Ben Cheng}; 93224b54f69543a5c0ec18f99bd717d2b724582eb6Ben Cheng 94224b54f69543a5c0ec18f99bd717d2b724582eb6Ben Cheng/* 95224b54f69543a5c0ec18f99bd717d2b724582eb6Ben Cheng * Filter spec (used for SETXXFILTER ioctls) 96224b54f69543a5c0ec18f99bd717d2b724582eb6Ben Cheng * This stuff is applicable only to the TAP (Ethernet) devices. 97224b54f69543a5c0ec18f99bd717d2b724582eb6Ben Cheng * If the count is zero the filter is disabled and the driver accepts 98224b54f69543a5c0ec18f99bd717d2b724582eb6Ben Cheng * all packets (promisc mode). 99224b54f69543a5c0ec18f99bd717d2b724582eb6Ben Cheng * If the filter is enabled in order to accept broadcast packets 100224b54f69543a5c0ec18f99bd717d2b724582eb6Ben Cheng * broadcast addr must be explicitly included in the addr list. 101224b54f69543a5c0ec18f99bd717d2b724582eb6Ben Cheng */ 102224b54f69543a5c0ec18f99bd717d2b724582eb6Ben Cheng#define TUN_FLT_ALLMULTI 0x0001 /* Accept all multicast packets */ 103224b54f69543a5c0ec18f99bd717d2b724582eb6Ben Chengstruct tun_filter { 104224b54f69543a5c0ec18f99bd717d2b724582eb6Ben Cheng __u16 flags; /* TUN_FLT_ flags see above */ 105224b54f69543a5c0ec18f99bd717d2b724582eb6Ben Cheng __u16 count; /* Number of addresses */ 106224b54f69543a5c0ec18f99bd717d2b724582eb6Ben Cheng __u8 addr[0][ETH_ALEN]; 107224b54f69543a5c0ec18f99bd717d2b724582eb6Ben Cheng}; 108224b54f69543a5c0ec18f99bd717d2b724582eb6Ben Cheng 109224b54f69543a5c0ec18f99bd717d2b724582eb6Ben Cheng#endif /* _UAPI__IF_TUN_H */ 110