/* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note *//* *  Universal TUN/TAP device driver. *  Copyright (C) 1999-2000 Maxim Krasnyansky <max_mk@yahoo.com> * *  This program is free software; you can redistribute it and/or modify *  it under the terms of the GNU General Public License as published by *  the Free Software Foundation; either version 2 of the License, or *  (at your option) any later version. * *  This program is distributed in the hope that it will be useful, *  but WITHOUT ANY WARRANTY; without even the implied warranty of *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *  GNU General Public License for more details. */ #ifndef _UAPI__IF_TUN_H#define _UAPI__IF_TUN_H #include <linux/types.h>#include <linux/if_ether.h>#include <linux/filter.h> /* Read queue size */#define TUN_READQ_SIZE	500/* TUN device type flags: deprecated. Use IFF_TUN/IFF_TAP instead. */#define TUN_TUN_DEV 	IFF_TUN#define TUN_TAP_DEV	IFF_TAP#define TUN_TYPE_MASK   0x000f /* Ioctl defines */#define TUNSETNOCSUM  _IOW('T', 200, int) #define TUNSETDEBUG   _IOW('T', 201, int) #define TUNSETIFF     _IOW('T', 202, int) #define TUNSETPERSIST _IOW('T', 203, int) #define TUNSETOWNER   _IOW('T', 204, int)#define TUNSETLINK    _IOW('T', 205, int)#define TUNSETGROUP   _IOW('T', 206, int)#define TUNGETFEATURES _IOR('T', 207, unsigned int)#define TUNSETOFFLOAD  _IOW('T', 208, unsigned int)#define TUNSETTXFILTER _IOW('T', 209, unsigned int)#define TUNGETIFF      _IOR('T', 210, unsigned int)#define TUNGETSNDBUF   _IOR('T', 211, int)#define TUNSETSNDBUF   _IOW('T', 212, int)#define TUNATTACHFILTER _IOW('T', 213, struct sock_fprog)#define TUNDETACHFILTER _IOW('T', 214, struct sock_fprog)#define TUNGETVNETHDRSZ _IOR('T', 215, int)#define TUNSETVNETHDRSZ _IOW('T', 216, int)#define TUNSETQUEUE  _IOW('T', 217, int)#define TUNSETIFINDEX	_IOW('T', 218, unsigned int)#define TUNGETFILTER _IOR('T', 219, struct sock_fprog)#define TUNSETVNETLE _IOW('T', 220, int)#define TUNGETVNETLE _IOR('T', 221, int)/* The TUNSETVNETBE and TUNGETVNETBE ioctls are for cross-endian support on * little-endian hosts. Not all kernel configurations support them, but all * configurations that support SET also support GET. */#define TUNSETVNETBE _IOW('T', 222, int)#define TUNGETVNETBE _IOR('T', 223, int)#define TUNSETSTEERINGEBPF _IOR('T', 224, int)#define TUNSETFILTEREBPF _IOR('T', 225, int)#define TUNSETCARRIER _IOW('T', 226, int)#define TUNGETDEVNETNS _IO('T', 227) /* TUNSETIFF ifr flags */#define IFF_TUN		0x0001#define IFF_TAP		0x0002#define IFF_NAPI	0x0010#define IFF_NAPI_FRAGS	0x0020#define IFF_NO_PI	0x1000/* This flag has no real effect */#define IFF_ONE_QUEUE	0x2000#define IFF_VNET_HDR	0x4000#define IFF_TUN_EXCL	0x8000#define IFF_MULTI_QUEUE 0x0100#define IFF_ATTACH_QUEUE 0x0200#define IFF_DETACH_QUEUE 0x0400/* read-only flag */#define IFF_PERSIST	0x0800#define IFF_NOFILTER	0x1000 /* Socket options */#define TUN_TX_TIMESTAMP 1 /* Features for GSO (TUNSETOFFLOAD). */#define TUN_F_CSUM	0x01	/* You can hand me unchecksummed packets. */#define TUN_F_TSO4	0x02	/* I can handle TSO for IPv4 packets */#define TUN_F_TSO6	0x04	/* I can handle TSO for IPv6 packets */#define TUN_F_TSO_ECN	0x08	/* I can handle TSO with ECN bits. */#define TUN_F_UFO	0x10	/* I can handle UFO packets */ /* Protocol info prepended to the packets (when IFF_NO_PI is not set) */#define TUN_PKT_STRIP	0x0001struct tun_pi {	__u16  flags;	__be16 proto;}; /* * Filter spec (used for SETXXFILTER ioctls) * This stuff is applicable only to the TAP (Ethernet) devices. * If the count is zero the filter is disabled and the driver accepts * all packets (promisc mode). * If the filter is enabled in order to accept broadcast packets * broadcast addr must be explicitly included in the addr list. */#define TUN_FLT_ALLMULTI 0x0001 /* Accept all multicast packets */struct tun_filter {	__u16  flags; /* TUN_FLT_ flags see above */	__u16  count; /* Number of addresses */	__u8   addr[][ETH_ALEN];}; #endif /* _UAPI__IF_TUN_H */