[linux-2.6-block.git] / include / uapi / linux / if_tun.h

/*
 *  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 flags */
#define TUN_TUN_DEV 	0x0001	
#define TUN_TAP_DEV	0x0002
#define TUN_TYPE_MASK   0x000f

#define TUN_FASYNC	0x0010
#define TUN_NOCHECKSUM	0x0020
#define TUN_NO_PI	0x0040
/* This flag has no real effect */
#define TUN_ONE_QUEUE	0x0080
#define TUN_PERSIST 	0x0100	
#define TUN_VNET_HDR 	0x0200
#define TUN_TAP_MQ      0x0400

/* 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)

/* TUNSETIFF ifr flags */
#define IFF_TUN		0x0001
#define IFF_TAP		0x0002
#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	0x0001
struct 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[0][ETH_ALEN];
};

#endif /* _UAPI__IF_TUN_H */
Commit	Line	Data
607ca46e DH	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
	16	#ifndef _UAPI__IF_TUN_H
	17	#define _UAPI__IF_TUN_H
	18
	19	#include <linux/types.h>
	20	#include <linux/if_ether.h>
	21	#include <linux/filter.h>
	22
	23	/* Read queue size */
	24	#define TUN_READQ_SIZE 500
	25
	26	/* TUN device flags */
	27	#define TUN_TUN_DEV 0x0001
	28	#define TUN_TAP_DEV 0x0002
	29	#define TUN_TYPE_MASK 0x000f
	30
	31	#define TUN_FASYNC 0x0010
	32	#define TUN_NOCHECKSUM 0x0020
	33	#define TUN_NO_PI 0x0040
5d097109	34	/* This flag has no real effect */
607ca46e DH	35	#define TUN_ONE_QUEUE 0x0080
	36	#define TUN_PERSIST 0x0100
	37	#define TUN_VNET_HDR 0x0200
bbb00994	38	#define TUN_TAP_MQ 0x0400
607ca46e DH	39
	40	/* Ioctl defines */
	41	#define TUNSETNOCSUM _IOW('T', 200, int)
	42	#define TUNSETDEBUG _IOW('T', 201, int)
	43	#define TUNSETIFF _IOW('T', 202, int)
	44	#define TUNSETPERSIST _IOW('T', 203, int)
	45	#define TUNSETOWNER _IOW('T', 204, int)
	46	#define TUNSETLINK _IOW('T', 205, int)
	47	#define TUNSETGROUP _IOW('T', 206, int)
	48	#define TUNGETFEATURES _IOR('T', 207, unsigned int)
	49	#define TUNSETOFFLOAD _IOW('T', 208, unsigned int)
	50	#define TUNSETTXFILTER _IOW('T', 209, unsigned int)
	51	#define TUNGETIFF _IOR('T', 210, unsigned int)
	52	#define TUNGETSNDBUF _IOR('T', 211, int)
	53	#define TUNSETSNDBUF _IOW('T', 212, int)
	54	#define TUNATTACHFILTER _IOW('T', 213, struct sock_fprog)
	55	#define TUNDETACHFILTER _IOW('T', 214, struct sock_fprog)
	56	#define TUNGETVNETHDRSZ _IOR('T', 215, int)
	57	#define TUNSETVNETHDRSZ _IOW('T', 216, int)
cde8b15f	58	#define TUNSETQUEUE _IOW('T', 217, int)
fb7589a1	59	#define TUNSETIFINDEX _IOW('T', 218, unsigned int)
76975e9c	60	#define TUNGETFILTER _IOR('T', 219, struct sock_fprog)
607ca46e DH	61
	62	/* TUNSETIFF ifr flags */
	63	#define IFF_TUN 0x0001
	64	#define IFF_TAP 0x0002
	65	#define IFF_NO_PI 0x1000
5d097109	66	/* This flag has no real effect */
607ca46e DH	67	#define IFF_ONE_QUEUE 0x2000
	68	#define IFF_VNET_HDR 0x4000
	69	#define IFF_TUN_EXCL 0x8000
bbb00994	70	#define IFF_MULTI_QUEUE 0x0100
cde8b15f JW	71	#define IFF_ATTACH_QUEUE 0x0200
cde8b15f JW	72	#define IFF_DETACH_QUEUE 0x0400
274038f8 PE	73	/* read-only flag */
274038f8 PE	74	#define IFF_PERSIST 0x0800
849c9b6f	75	#define IFF_NOFILTER 0x1000
607ca46e	76
eda29772 RC	77	/* Socket options */
	78	#define TUN_TX_TIMESTAMP 1
	79
607ca46e DH	80	/* Features for GSO (TUNSETOFFLOAD). */
	81	#define TUN_F_CSUM 0x01 /* You can hand me unchecksummed packets. */
	82	#define TUN_F_TSO4 0x02 /* I can handle TSO for IPv4 packets */
	83	#define TUN_F_TSO6 0x04 /* I can handle TSO for IPv6 packets */
	84	#define TUN_F_TSO_ECN 0x08 /* I can handle TSO with ECN bits. */
	85	#define TUN_F_UFO 0x10 /* I can handle UFO packets */
	86
	87	/* Protocol info prepended to the packets (when IFF_NO_PI is not set) */
	88	#define TUN_PKT_STRIP 0x0001
	89	struct tun_pi {
	90	__u16 flags;
	91	__be16 proto;
	92	};
	93
	94	/*
	95	* Filter spec (used for SETXXFILTER ioctls)
	96	* This stuff is applicable only to the TAP (Ethernet) devices.
	97	* If the count is zero the filter is disabled and the driver accepts
	98	* all packets (promisc mode).
	99	* If the filter is enabled in order to accept broadcast packets
	100	* broadcast addr must be explicitly included in the addr list.
	101	*/
	102	#define TUN_FLT_ALLMULTI 0x0001 /* Accept all multicast packets */
	103	struct tun_filter {
	104	__u16 flags; /* TUN_FLT_ flags see above */
	105	__u16 count; /* Number of addresses */
	106	__u8 addr[0][ETH_ALEN];
	107	};
	108
	109	#endif /* _UAPI__IF_TUN_H */