hv: Add hyperv.h to uapi headers

This patch adds the hyperv.h header to the uapi folder, and adds it to the Kbuild file.
Doing this enables compiling userspace Hyper-V tools using the installed headers.

Version 2: Split UAPI parts into new header, instead of duplicating.

Signed-off-by: Bjarke Istrup Pedersen <gurligebis@gentoo.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

3 files changed, 347 insertions, 319 deletions

diff --git a/include/linux/hyperv.h b/include/linux/hyperv.h
index 15da677478dd..167ef47e3d6e 100644
--- a/include/linux/hyperv.h
+++ b/include/linux/hyperv.h
@@ -25,325 +25,9 @@
 #ifndef _HYPERV_H
 #define _HYPERV_H
 
-#include <linux/types.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
-
-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));
-
-/*
- * 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)
+#include <uapi/linux/hyperv.h>
 
-/*
- * 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 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));
-
-#ifdef __KERNEL__
+#include <linux/types.h>
 #include <linux/scatterlist.h>
 #include <linux/list.h>
 #include <linux/uuid.h>
@@ -1465,5 +1149,4 @@ void hv_vss_onchannelcallback(void *);
 
 extern __u32 vmbus_proto_version;
 
-#endif /* __KERNEL__ */
 #endif /* _HYPERV_H */
diff --git a/include/uapi/linux/Kbuild b/include/uapi/linux/Kbuild
index 3ce25b5d75a9..6929571b79b0 100644
--- a/include/uapi/linux/Kbuild
+++ b/include/uapi/linux/Kbuild
@@ -139,6 +139,7 @@ header-y += hid.h
 header-y += hiddev.h
 header-y += hidraw.h
 header-y += hpet.h
+header-y += hyperv.h
 header-y += hysdn_if.h
 header-y += i2c-dev.h
 header-y += i2c.h
diff --git a/include/uapi/linux/hyperv.h b/include/uapi/linux/hyperv.h
new file mode 100644
index 000000000000..1861f8e2ce2b
--- /dev/null
+++ b/include/uapi/linux/hyperv.h
@@ -0,0 +1,344 @@
+/*
+ *
+ * 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
+
+/*
+ * 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
+
+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));
+
+/*
+ * 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 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 */