include/uapi/linux/hyperv.h - kernel/quantenna - Git at Google

 /*
  *
  * Copyright (c) 2011, Microsoft Corporation.
  *
  * This program is free software; you can redistribute it and/or modify it
  * under the terms and conditions of the GNU General Public License,
  * version 2, as published by the Free Software Foundation.
  *
  * This program is distributed in the hope 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.
  *
  * You should have received a copy of the GNU General Public License along with
  * this program; if not, write to the Free Software Foundation, Inc., 59 Temple
  * Place - Suite 330, Boston, MA 02111-1307 USA.
  *
  * Authors:
  *   Haiyang Zhang <haiyangz@microsoft.com>
  *   Hank Janssen  <hjanssen@microsoft.com>
  *   K. Y. Srinivasan <kys@microsoft.com>
  *
  */

 #ifndef _UAPI_HYPERV_H
 #define _UAPI_HYPERV_H

 #include <linux/uuid.h>

 /*
  * Framework version for util services.
  */
 #define UTIL_FW_MINOR  0

 #define UTIL_WS2K8_FW_MAJOR  1
 #define UTIL_WS2K8_FW_VERSION     (UTIL_WS2K8_FW_MAJOR << 16 | UTIL_FW_MINOR)

 #define UTIL_FW_MAJOR  3
 #define UTIL_FW_VERSION     (UTIL_FW_MAJOR << 16 | UTIL_FW_MINOR)


 /*
  * Implementation of host controlled snapshot of the guest.
  */

 #define VSS_OP_REGISTER 128

 /*
   Daemon code with full handshake support.
  */
 #define VSS_OP_REGISTER1 129

 enum hv_vss_op {
 	VSS_OP_CREATE = 0,
 	VSS_OP_DELETE,
 	VSS_OP_HOT_BACKUP,
 	VSS_OP_GET_DM_INFO,
 	VSS_OP_BU_COMPLETE,
 	/*
 	 * Following operations are only supported with IC version >= 5.0
 	 */
 	VSS_OP_FREEZE, /* Freeze the file systems in the VM */
 	VSS_OP_THAW, /* Unfreeze the file systems */
 	VSS_OP_AUTO_RECOVER,
 	VSS_OP_COUNT /* Number of operations, must be last */
 };


 /*
  * Header for all VSS messages.
  */
 struct hv_vss_hdr {
 	__u8 operation;
 	__u8 reserved[7];
 } __attribute__((packed));


 /*
  * Flag values for the hv_vss_check_feature. Linux supports only
  * one value.
  */
 #define VSS_HBU_NO_AUTO_RECOVERY	0x00000005

 struct hv_vss_check_feature {
 	__u32 flags;
 } __attribute__((packed));

 struct hv_vss_check_dm_info {
 	__u32 flags;
 } __attribute__((packed));

 struct hv_vss_msg {
 	union {
 		struct hv_vss_hdr vss_hdr;
 		int error;
 	};
 	union {
 		struct hv_vss_check_feature vss_cf;
 		struct hv_vss_check_dm_info dm_info;
 	};
 } __attribute__((packed));

 /*
  * Implementation of a host to guest copy facility.
  */

 #define FCOPY_VERSION_0 0
 #define FCOPY_VERSION_1 1
 #define FCOPY_CURRENT_VERSION FCOPY_VERSION_1
 #define W_MAX_PATH 260

 enum hv_fcopy_op {
 	START_FILE_COPY = 0,
 	WRITE_TO_FILE,
 	COMPLETE_FCOPY,
 	CANCEL_FCOPY,
 };

 struct hv_fcopy_hdr {
 	__u32 operation;
 	uuid_le service_id0; /* currently unused */
 	uuid_le service_id1; /* currently unused */
 } __attribute__((packed));

 #define OVER_WRITE	0x1
 #define CREATE_PATH	0x2

 struct hv_start_fcopy {
 	struct hv_fcopy_hdr hdr;
 	__u16 file_name[W_MAX_PATH];
 	__u16 path_name[W_MAX_PATH];
 	__u32 copy_flags;
 	__u64 file_size;
 } __attribute__((packed));

 /*
  * The file is chunked into fragments.
  */
 #define DATA_FRAGMENT	(6 * 1024)

 struct hv_do_fcopy {
 	struct hv_fcopy_hdr hdr;
 	__u32   pad;
 	__u64	offset;
 	__u32	size;
 	__u8	data[DATA_FRAGMENT];
 } __attribute__((packed));

 /*
  * An implementation of HyperV key value pair (KVP) functionality for Linux.
  *
  *
  * Copyright (C) 2010, Novell, Inc.
  * Author : K. Y. Srinivasan <ksrinivasan@novell.com>
  *
  */

 /*
  * Maximum value size - used for both key names and value data, and includes
  * any applicable NULL terminators.
  *
  * Note:  This limit is somewhat arbitrary, but falls easily within what is
  * supported for all native guests (back to Win 2000) and what is reasonable
  * for the IC KVP exchange functionality.  Note that Windows Me/98/95 are
  * limited to 255 character key names.
  *
  * MSDN recommends not storing data values larger than 2048 bytes in the
  * registry.
  *
  * Note:  This value is used in defining the KVP exchange message - this value
  * cannot be modified without affecting the message size and compatibility.
  */

 /*
  * bytes, including any null terminators
  */
 #define HV_KVP_EXCHANGE_MAX_VALUE_SIZE          (2048)


 /*
  * Maximum key size - the registry limit for the length of an entry name
  * is 256 characters, including the null terminator
  */

 #define HV_KVP_EXCHANGE_MAX_KEY_SIZE            (512)

 /*
  * In Linux, we implement the KVP functionality in two components:
  * 1) The kernel component which is packaged as part of the hv_utils driver
  * is responsible for communicating with the host and responsible for
  * implementing the host/guest protocol. 2) A user level daemon that is
  * responsible for data gathering.
  *
  * Host/Guest Protocol: The host iterates over an index and expects the guest
  * to assign a key name to the index and also return the value corresponding to
  * the key. The host will have atmost one KVP transaction outstanding at any
  * given point in time. The host side iteration stops when the guest returns
  * an error. Microsoft has specified the following mapping of key names to
  * host specified index:
  *
  *	Index		Key Name
  *	0		FullyQualifiedDomainName
  *	1		IntegrationServicesVersion
  *	2		NetworkAddressIPv4
  *	3		NetworkAddressIPv6
  *	4		OSBuildNumber
  *	5		OSName
  *	6		OSMajorVersion
  *	7		OSMinorVersion
  *	8		OSVersion
  *	9		ProcessorArchitecture
  *
  * The Windows host expects the Key Name and Key Value to be encoded in utf16.
  *
  * Guest Kernel/KVP Daemon Protocol: As noted earlier, we implement all of the
  * data gathering functionality in a user mode daemon. The user level daemon
  * is also responsible for binding the key name to the index as well. The
  * kernel and user-level daemon communicate using a connector channel.
  *
  * The user mode component first registers with the
  * the kernel component. Subsequently, the kernel component requests, data
  * for the specified keys. In response to this message the user mode component
  * fills in the value corresponding to the specified key. We overload the
  * sequence field in the cn_msg header to define our KVP message types.
  *
  *
  * The kernel component simply acts as a conduit for communication between the
  * Windows host and the user-level daemon. The kernel component passes up the
  * index received from the Host to the user-level daemon. If the index is
  * valid (supported), the corresponding key as well as its
  * value (both are strings) is returned. If the index is invalid
  * (not supported), a NULL key string is returned.
  */


 /*
  * Registry value types.
  */

 #define REG_SZ 1
 #define REG_U32 4
 #define REG_U64 8

 /*
  * As we look at expanding the KVP functionality to include
  * IP injection functionality, we need to maintain binary
  * compatibility with older daemons.
  *
  * The KVP opcodes are defined by the host and it was unfortunate
  * that I chose to treat the registration operation as part of the
  * KVP operations defined by the host.
  * Here is the level of compatibility
  * (between the user level daemon and the kernel KVP driver) that we
  * will implement:
  *
  * An older daemon will always be supported on a newer driver.
  * A given user level daemon will require a minimal version of the
  * kernel driver.
  * If we cannot handle the version differences, we will fail gracefully
  * (this can happen when we have a user level daemon that is more
  * advanced than the KVP driver.
  *
  * We will use values used in this handshake for determining if we have
  * workable user level daemon and the kernel driver. We begin by taking the
  * registration opcode out of the KVP opcode namespace. We will however,
  * maintain compatibility with the existing user-level daemon code.
  */

 /*
  * Daemon code not supporting IP injection (legacy daemon).
  */

 #define KVP_OP_REGISTER	4

 /*
  * Daemon code supporting IP injection.
  * The KVP opcode field is used to communicate the
  * registration information; so define a namespace that
  * will be distinct from the host defined KVP opcode.
  */

 #define KVP_OP_REGISTER1 100

 enum hv_kvp_exchg_op {
 	KVP_OP_GET = 0,
 	KVP_OP_SET,
 	KVP_OP_DELETE,
 	KVP_OP_ENUMERATE,
 	KVP_OP_GET_IP_INFO,
 	KVP_OP_SET_IP_INFO,
 	KVP_OP_COUNT /* Number of operations, must be last. */
 };

 enum hv_kvp_exchg_pool {
 	KVP_POOL_EXTERNAL = 0,
 	KVP_POOL_GUEST,
 	KVP_POOL_AUTO,
 	KVP_POOL_AUTO_EXTERNAL,
 	KVP_POOL_AUTO_INTERNAL,
 	KVP_POOL_COUNT /* Number of pools, must be last. */
 };

 /*
  * Some Hyper-V status codes.
  */

 #define HV_S_OK				0x00000000
 #define HV_E_FAIL			0x80004005
 #define HV_S_CONT			0x80070103
 #define HV_ERROR_NOT_SUPPORTED		0x80070032
 #define HV_ERROR_MACHINE_LOCKED		0x800704F7
 #define HV_ERROR_DEVICE_NOT_CONNECTED	0x8007048F
 #define HV_INVALIDARG			0x80070057
 #define HV_GUID_NOTFOUND		0x80041002
 #define HV_ERROR_ALREADY_EXISTS		0x80070050
 #define HV_ERROR_DISK_FULL		0x80070070

 #define ADDR_FAMILY_NONE	0x00
 #define ADDR_FAMILY_IPV4	0x01
 #define ADDR_FAMILY_IPV6	0x02

 #define MAX_ADAPTER_ID_SIZE	128
 #define MAX_IP_ADDR_SIZE	1024
 #define MAX_GATEWAY_SIZE	512


 struct hv_kvp_ipaddr_value {
 	__u16	adapter_id[MAX_ADAPTER_ID_SIZE];
 	__u8	addr_family;
 	__u8	dhcp_enabled;
 	__u16	ip_addr[MAX_IP_ADDR_SIZE];
 	__u16	sub_net[MAX_IP_ADDR_SIZE];
 	__u16	gate_way[MAX_GATEWAY_SIZE];
 	__u16	dns_addr[MAX_IP_ADDR_SIZE];
 } __attribute__((packed));


 struct hv_kvp_hdr {
 	__u8 operation;
 	__u8 pool;
 	__u16 pad;
 } __attribute__((packed));

 struct hv_kvp_exchg_msg_value {
 	__u32 value_type;
 	__u32 key_size;
 	__u32 value_size;
 	__u8 key[HV_KVP_EXCHANGE_MAX_KEY_SIZE];
 	union {
 		__u8 value[HV_KVP_EXCHANGE_MAX_VALUE_SIZE];
 		__u32 value_u32;
 		__u64 value_u64;
 	};
 } __attribute__((packed));

 struct hv_kvp_msg_enumerate {
 	__u32 index;
 	struct hv_kvp_exchg_msg_value data;
 } __attribute__((packed));

 struct hv_kvp_msg_get {
 	struct hv_kvp_exchg_msg_value data;
 };

 struct hv_kvp_msg_set {
 	struct hv_kvp_exchg_msg_value data;
 };

 struct hv_kvp_msg_delete {
 	__u32 key_size;
 	__u8 key[HV_KVP_EXCHANGE_MAX_KEY_SIZE];
 };

 struct hv_kvp_register {
 	__u8 version[HV_KVP_EXCHANGE_MAX_KEY_SIZE];
 };

 struct hv_kvp_msg {
 	union {
 		struct hv_kvp_hdr	kvp_hdr;
 		int error;
 	};
 	union {
 		struct hv_kvp_msg_get		kvp_get;
 		struct hv_kvp_msg_set		kvp_set;
 		struct hv_kvp_msg_delete	kvp_delete;
 		struct hv_kvp_msg_enumerate	kvp_enum_data;
 		struct hv_kvp_ipaddr_value      kvp_ip_val;
 		struct hv_kvp_register		kvp_register;
 	} body;
 } __attribute__((packed));

 struct hv_kvp_ip_msg {
 	__u8 operation;
 	__u8 pool;
 	struct hv_kvp_ipaddr_value      kvp_ip_val;
 } __attribute__((packed));

 #endif /* _UAPI_HYPERV_H */
	/*
	*
	* Copyright (c) 2011, Microsoft Corporation.
	*
	* This program is free software; you can redistribute it and/or modify it
	* under the terms and conditions of the GNU General Public License,
	* version 2, as published by the Free Software Foundation.
	*
	* This program is distributed in the hope 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.
	*
	* You should have received a copy of the GNU General Public License along with
	* this program; if not, write to the Free Software Foundation, Inc., 59 Temple
	* Place - Suite 330, Boston, MA 02111-1307 USA.
	*
	* Authors:
	* Haiyang Zhang <haiyangz@microsoft.com>
	* Hank Janssen <hjanssen@microsoft.com>
	* K. Y. Srinivasan <kys@microsoft.com>
	*
	*/

	#ifndef _UAPI_HYPERV_H
	#define _UAPI_HYPERV_H

	#include <linux/uuid.h>

	/*
	* Framework version for util services.
	*/
	#define UTIL_FW_MINOR 0

	#define UTIL_WS2K8_FW_MAJOR 1
	#define UTIL_WS2K8_FW_VERSION (UTIL_WS2K8_FW_MAJOR << 16 \| UTIL_FW_MINOR)

	#define UTIL_FW_MAJOR 3
	#define UTIL_FW_VERSION (UTIL_FW_MAJOR << 16 \| UTIL_FW_MINOR)


	/*
	* Implementation of host controlled snapshot of the guest.
	*/

	#define VSS_OP_REGISTER 128

	/*
	Daemon code with full handshake support.
	*/
	#define VSS_OP_REGISTER1 129

	enum hv_vss_op {
	VSS_OP_CREATE = 0,
	VSS_OP_DELETE,
	VSS_OP_HOT_BACKUP,
	VSS_OP_GET_DM_INFO,
	VSS_OP_BU_COMPLETE,
	/*
	* Following operations are only supported with IC version >= 5.0
	*/
	VSS_OP_FREEZE, /* Freeze the file systems in the VM */
	VSS_OP_THAW, /* Unfreeze the file systems */
	VSS_OP_AUTO_RECOVER,
	VSS_OP_COUNT /* Number of operations, must be last */
	};


	/*
	* Header for all VSS messages.
	*/
	struct hv_vss_hdr {
	__u8 operation;
	__u8 reserved[7];
	} __attribute__((packed));


	/*
	* Flag values for the hv_vss_check_feature. Linux supports only
	* one value.
	*/
	#define VSS_HBU_NO_AUTO_RECOVERY 0x00000005

	struct hv_vss_check_feature {
	__u32 flags;
	} __attribute__((packed));

	struct hv_vss_check_dm_info {
	__u32 flags;
	} __attribute__((packed));

	struct hv_vss_msg {
	union {
	struct hv_vss_hdr vss_hdr;
	int error;
	};
	union {
	struct hv_vss_check_feature vss_cf;
	struct hv_vss_check_dm_info dm_info;
	};
	} __attribute__((packed));

	/*
	* Implementation of a host to guest copy facility.
	*/

	#define FCOPY_VERSION_0 0
	#define FCOPY_VERSION_1 1
	#define FCOPY_CURRENT_VERSION FCOPY_VERSION_1
	#define W_MAX_PATH 260

	enum hv_fcopy_op {
	START_FILE_COPY = 0,
	WRITE_TO_FILE,
	COMPLETE_FCOPY,
	CANCEL_FCOPY,
	};

	struct hv_fcopy_hdr {
	__u32 operation;
	uuid_le service_id0; /* currently unused */
	uuid_le service_id1; /* currently unused */
	} __attribute__((packed));

	#define OVER_WRITE 0x1
	#define CREATE_PATH 0x2

	struct hv_start_fcopy {
	struct hv_fcopy_hdr hdr;
	__u16 file_name[W_MAX_PATH];
	__u16 path_name[W_MAX_PATH];
	__u32 copy_flags;
	__u64 file_size;
	} __attribute__((packed));

	/*
	* The file is chunked into fragments.
	*/
	#define DATA_FRAGMENT (6 * 1024)

	struct hv_do_fcopy {
	struct hv_fcopy_hdr hdr;
	__u32 pad;
	__u64 offset;
	__u32 size;
	__u8 data[DATA_FRAGMENT];
	} __attribute__((packed));

	/*
	* An implementation of HyperV key value pair (KVP) functionality for Linux.
	*
	*
	* Copyright (C) 2010, Novell, Inc.
	* Author : K. Y. Srinivasan <ksrinivasan@novell.com>
	*
	*/

	/*
	* Maximum value size - used for both key names and value data, and includes
	* any applicable NULL terminators.
	*
	* Note: This limit is somewhat arbitrary, but falls easily within what is
	* supported for all native guests (back to Win 2000) and what is reasonable
	* for the IC KVP exchange functionality. Note that Windows Me/98/95 are
	* limited to 255 character key names.
	*
	* MSDN recommends not storing data values larger than 2048 bytes in the
	* registry.
	*
	* Note: This value is used in defining the KVP exchange message - this value
	* cannot be modified without affecting the message size and compatibility.
	*/

	/*
	* bytes, including any null terminators
	*/
	#define HV_KVP_EXCHANGE_MAX_VALUE_SIZE (2048)


	/*
	* Maximum key size - the registry limit for the length of an entry name
	* is 256 characters, including the null terminator
	*/

	#define HV_KVP_EXCHANGE_MAX_KEY_SIZE (512)

	/*
	* In Linux, we implement the KVP functionality in two components:
	* 1) The kernel component which is packaged as part of the hv_utils driver
	* is responsible for communicating with the host and responsible for
	* implementing the host/guest protocol. 2) A user level daemon that is
	* responsible for data gathering.
	*
	* Host/Guest Protocol: The host iterates over an index and expects the guest
	* to assign a key name to the index and also return the value corresponding to
	* the key. The host will have atmost one KVP transaction outstanding at any
	* given point in time. The host side iteration stops when the guest returns
	* an error. Microsoft has specified the following mapping of key names to
	* host specified index:
	*
	* Index Key Name
	* 0 FullyQualifiedDomainName
	* 1 IntegrationServicesVersion
	* 2 NetworkAddressIPv4
	* 3 NetworkAddressIPv6
	* 4 OSBuildNumber
	* 5 OSName
	* 6 OSMajorVersion
	* 7 OSMinorVersion
	* 8 OSVersion
	* 9 ProcessorArchitecture
	*
	* The Windows host expects the Key Name and Key Value to be encoded in utf16.
	*
	* Guest Kernel/KVP Daemon Protocol: As noted earlier, we implement all of the
	* data gathering functionality in a user mode daemon. The user level daemon
	* is also responsible for binding the key name to the index as well. The
	* kernel and user-level daemon communicate using a connector channel.
	*
	* The user mode component first registers with the
	* the kernel component. Subsequently, the kernel component requests, data
	* for the specified keys. In response to this message the user mode component
	* fills in the value corresponding to the specified key. We overload the
	* sequence field in the cn_msg header to define our KVP message types.
	*
	*
	* The kernel component simply acts as a conduit for communication between the
	* Windows host and the user-level daemon. The kernel component passes up the
	* index received from the Host to the user-level daemon. If the index is
	* valid (supported), the corresponding key as well as its
	* value (both are strings) is returned. If the index is invalid
	* (not supported), a NULL key string is returned.
	*/


	/*
	* Registry value types.
	*/

	#define REG_SZ 1
	#define REG_U32 4
	#define REG_U64 8

	/*
	* As we look at expanding the KVP functionality to include
	* IP injection functionality, we need to maintain binary
	* compatibility with older daemons.
	*
	* The KVP opcodes are defined by the host and it was unfortunate
	* that I chose to treat the registration operation as part of the
	* KVP operations defined by the host.
	* Here is the level of compatibility
	* (between the user level daemon and the kernel KVP driver) that we
	* will implement:
	*
	* An older daemon will always be supported on a newer driver.
	* A given user level daemon will require a minimal version of the
	* kernel driver.
	* If we cannot handle the version differences, we will fail gracefully
	* (this can happen when we have a user level daemon that is more
	* advanced than the KVP driver.
	*
	* We will use values used in this handshake for determining if we have
	* workable user level daemon and the kernel driver. We begin by taking the
	* registration opcode out of the KVP opcode namespace. We will however,
	* maintain compatibility with the existing user-level daemon code.
	*/

	/*
	* Daemon code not supporting IP injection (legacy daemon).
	*/

	#define KVP_OP_REGISTER 4

	/*
	* Daemon code supporting IP injection.
	* The KVP opcode field is used to communicate the
	* registration information; so define a namespace that
	* will be distinct from the host defined KVP opcode.
	*/

	#define KVP_OP_REGISTER1 100

	enum hv_kvp_exchg_op {
	KVP_OP_GET = 0,
	KVP_OP_SET,
	KVP_OP_DELETE,
	KVP_OP_ENUMERATE,
	KVP_OP_GET_IP_INFO,
	KVP_OP_SET_IP_INFO,
	KVP_OP_COUNT /* Number of operations, must be last. */
	};

	enum hv_kvp_exchg_pool {
	KVP_POOL_EXTERNAL = 0,
	KVP_POOL_GUEST,
	KVP_POOL_AUTO,
	KVP_POOL_AUTO_EXTERNAL,
	KVP_POOL_AUTO_INTERNAL,
	KVP_POOL_COUNT /* Number of pools, must be last. */
	};

	/*
	* Some Hyper-V status codes.
	*/

	#define HV_S_OK 0x00000000
	#define HV_E_FAIL 0x80004005
	#define HV_S_CONT 0x80070103
	#define HV_ERROR_NOT_SUPPORTED 0x80070032
	#define HV_ERROR_MACHINE_LOCKED 0x800704F7
	#define HV_ERROR_DEVICE_NOT_CONNECTED 0x8007048F
	#define HV_INVALIDARG 0x80070057
	#define HV_GUID_NOTFOUND 0x80041002
	#define HV_ERROR_ALREADY_EXISTS 0x80070050
	#define HV_ERROR_DISK_FULL 0x80070070

	#define ADDR_FAMILY_NONE 0x00
	#define ADDR_FAMILY_IPV4 0x01
	#define ADDR_FAMILY_IPV6 0x02

	#define MAX_ADAPTER_ID_SIZE 128
	#define MAX_IP_ADDR_SIZE 1024
	#define MAX_GATEWAY_SIZE 512


	struct hv_kvp_ipaddr_value {
	__u16 adapter_id[MAX_ADAPTER_ID_SIZE];
	__u8 addr_family;
	__u8 dhcp_enabled;
	__u16 ip_addr[MAX_IP_ADDR_SIZE];
	__u16 sub_net[MAX_IP_ADDR_SIZE];
	__u16 gate_way[MAX_GATEWAY_SIZE];
	__u16 dns_addr[MAX_IP_ADDR_SIZE];
	} __attribute__((packed));


	struct hv_kvp_hdr {
	__u8 operation;
	__u8 pool;
	__u16 pad;
	} __attribute__((packed));

	struct hv_kvp_exchg_msg_value {
	__u32 value_type;
	__u32 key_size;
	__u32 value_size;
	__u8 key[HV_KVP_EXCHANGE_MAX_KEY_SIZE];
	union {
	__u8 value[HV_KVP_EXCHANGE_MAX_VALUE_SIZE];
	__u32 value_u32;
	__u64 value_u64;
	};
	} __attribute__((packed));

	struct hv_kvp_msg_enumerate {
	__u32 index;
	struct hv_kvp_exchg_msg_value data;
	} __attribute__((packed));

	struct hv_kvp_msg_get {
	struct hv_kvp_exchg_msg_value data;
	};

	struct hv_kvp_msg_set {
	struct hv_kvp_exchg_msg_value data;
	};

	struct hv_kvp_msg_delete {
	__u32 key_size;
	__u8 key[HV_KVP_EXCHANGE_MAX_KEY_SIZE];
	};

	struct hv_kvp_register {
	__u8 version[HV_KVP_EXCHANGE_MAX_KEY_SIZE];
	};

	struct hv_kvp_msg {
	union {
	struct hv_kvp_hdr kvp_hdr;
	int error;
	};
	union {
	struct hv_kvp_msg_get kvp_get;
	struct hv_kvp_msg_set kvp_set;
	struct hv_kvp_msg_delete kvp_delete;
	struct hv_kvp_msg_enumerate kvp_enum_data;
	struct hv_kvp_ipaddr_value kvp_ip_val;
	struct hv_kvp_register kvp_register;
	} body;
	} __attribute__((packed));

	struct hv_kvp_ip_msg {
	__u8 operation;
	__u8 pool;
	struct hv_kvp_ipaddr_value kvp_ip_val;
	} __attribute__((packed));

	#endif /* _UAPI_HYPERV_H */