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Date:	Sun, 19 Jan 2014 05:11:31 +0000
From:	KY Srinivasan <kys@...rosoft.com>
To:	Bjarke Istrup Pedersen <gurligebis@...too.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
CC:	Haiyang Zhang <haiyangz@...rosoft.com>
Subject: RE: [PATCH v2] Adding hyperv.h to uapi headers



> -----Original Message-----
> From: gurligebis@...il.com [mailto:gurligebis@...il.com] On Behalf Of Bjarke
> Istrup Pedersen
> Sent: Saturday, January 18, 2014 4:23 PM
> To: Linux Kernel Mailing List
> Cc: Haiyang Zhang; KY Srinivasan; Bjarke Istrup Pedersen
> Subject: Re: [PATCH v2] Adding hyperv.h to uapi headers
> 
> Could any of you Hyper-V developers take a look at this, and see if
> this split makes sense to you?

Have you compiled the hyper-v drivers with your change. I briefly looked at your
latest patch but I did not see an include of the user level hyper-V driver in the kernel
version of the header; or did I miss it. Please compile the drivers and the tools/hv/
user level daemons to test your patch.

K. Y  
> 
> Thanks :)
> 
> /Bjarke
> 
> 2014/1/19 Bjarke Istrup Pedersen <gurligebis@...too.org>:
> > 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@...too.org>
> > ---
> >  include/linux/hyperv.h      | 321 +----------------------------------------
> >  include/uapi/linux/Kbuild   |   1 +
> >  include/uapi/linux/hyperv.h | 344
> ++++++++++++++++++++++++++++++++++++++++++++
> >  3 files changed, 347 insertions(+), 319 deletions(-)
> >  create mode 100644 include/uapi/linux/hyperv.h
> >
> > diff --git a/include/linux/hyperv.h b/include/linux/hyperv.h
> > index 15da677..167ef47 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@...ell.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 33d2b8f..6389736 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 0000000..1861f8e
> > --- /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@...rosoft.com>
> > + *   Hank Janssen  <hjanssen@...rosoft.com>
> > + *   K. Y. Srinivasan <kys@...rosoft.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@...ell.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 */
> > --
> > 1.8.5.3
> >
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