BluetoothLeConfig.h File Reference

Data Structures
struct	EFI_BLUETOOTH_LE_CONFIG_SCAN_PARAMETER
struct	EFI_BLUETOOTH_LE_SCAN_CALLBACK_INFORMATION
struct	EFI_BLUETOOTH_LE_CONFIG_CONNECT_PARAMETER
struct	_EFI_BLUETOOTH_LE_CONFIG_PROTOCOL

Macros
#define	EFI_BLUETOOTH_LE_CONFIG_PROTOCOL_GUID

Typedefs
typedef struct _EFI_BLUETOOTH_LE_CONFIG_PROTOCOL	EFI_BLUETOOTH_LE_CONFIG_PROTOCOL
typedef EFI_STATUS(EFIAPI *	EFI_BLUETOOTH_LE_CONFIG_INIT )(IN EFI_BLUETOOTH_LE_CONFIG_PROTOCOL *This)
typedef IN VOID *	Context
typedef IN VOID IN EFI_BLUETOOTH_LE_SCAN_CALLBACK_INFORMATION *	CallbackInfo
typedef EFI_STATUS(EFIAPI *	EFI_BLUETOOTH_LE_CONFIG_SCAN )(IN EFI_BLUETOOTH_LE_CONFIG_PROTOCOL *This, IN BOOLEAN ReScan, IN UINT32 Timeout, IN EFI_BLUETOOTH_LE_CONFIG_SCAN_PARAMETER *ScanParameter, IN EFI_BLUETOOTH_LE_CONFIG_SCAN_CALLBACK_FUNCTION Callback, IN VOID *Context)
typedef EFI_STATUS(EFIAPI *	EFI_BLUETOOTH_LE_CONFIG_CONNECT )(IN EFI_BLUETOOTH_LE_CONFIG_PROTOCOL *This, IN BOOLEAN AutoReconnect, IN BOOLEAN DoBonding, IN EFI_BLUETOOTH_LE_CONFIG_CONNECT_PARAMETER *ConnectParameter, IN BLUETOOTH_LE_ADDRESS *BD_ADDR)
typedef EFI_STATUS(EFIAPI *	EFI_BLUETOOTH_LE_CONFIG_DISCONNECT )(IN EFI_BLUETOOTH_LE_CONFIG_PROTOCOL *This, IN BLUETOOTH_LE_ADDRESS *BD_ADDR, IN UINT8 Reason)
typedef IN EFI_BLUETOOTH_CONFIG_DATA_TYPE	DataType
typedef IN EFI_BLUETOOTH_CONFIG_DATA_TYPE IN OUT UINTN *	DataSize
typedef IN EFI_BLUETOOTH_CONFIG_DATA_TYPE IN OUT UINTN IN OUT VOID *	Data
typedef IN EFI_BLUETOOTH_CONFIG_DATA_TYPE IN BLUETOOTH_LE_ADDRESS *	BDAddr
typedef IN VOID IN BLUETOOTH_LE_ADDRESS IN EFI_BLUETOOTH_LE_SMP_EVENT_DATA_TYPE	EventDataType
typedef IN EFI_BLUETOOTH_LE_SMP_CALLBACK	Callback
typedef IN VOID IN BLUETOOTH_LE_ADDRESS IN EFI_BLUETOOTH_LE_SMP_DATA_TYPE	Type
typedef IN VOID IN EFI_BLUETOOTH_CONNECT_COMPLETE_CALLBACK_TYPE	CallbackType
typedef IN VOID IN EFI_BLUETOOTH_CONNECT_COMPLETE_CALLBACK_TYPE IN BLUETOOTH_LE_ADDRESS IN VOID *	InputBuffer
typedef IN VOID IN EFI_BLUETOOTH_CONNECT_COMPLETE_CALLBACK_TYPE IN BLUETOOTH_LE_ADDRESS IN VOID IN UINTN	InputBufferSize

Enumerations
enum	EFI_BLUETOOTH_LE_SMP_EVENT_DATA_TYPE {   EfiBluetoothSmpAuthorizationRequestEvent, EfiBluetoothSmpPasskeyReadyEvent, EfiBluetoothSmpPasskeyRequestEvent, EfiBluetoothSmpOOBDataRequestEvent,   EfiBluetoothSmpNumericComparisonEvent }
enum	EFI_BLUETOOTH_LE_SMP_DATA_TYPE {   EfiBluetoothSmpLocalIR, EfiBluetoothSmpLocalER, EfiBluetoothSmpLocalDHK, EfiBluetoothSmpKeysDistributed = 0x1000,   EfiBluetoothSmpKeySize, EfiBluetoothSmpKeyType, EfiBluetoothSmpPeerLTK, EfiBluetoothSmpPeerIRK,   EfiBluetoothSmpPeerCSRK, EfiBluetoothSmpPeerRand, EfiBluetoothSmpPeerEDIV, EfiBluetoothSmpPeerSignCounter,   EfiBluetoothSmpLocalLTK, EfiBluetoothSmpLocalIRK, EfiBluetoothSmpLocalCSRK, EfiBluetoothSmpLocalSignCounter,   EfiBluetoothSmpLocalDIV, EfiBluetoothSmpPeerAddressList, EfiBluetoothSmpMax }

Functions
typedef	EFI_STATUS (EFIAPI *EFI_BLUETOOTH_LE_CONFIG_SCAN_CALLBACK_FUNCTION)(IN EFI_BLUETOOTH_LE_CONFIG_PROTOCOL *This

Variables
EFI_GUID	gEfiBluetoothLeConfigProtocolGuid

Detailed Description

EFI Bluetooth LE Config Protocol as defined in UEFI 2.7. This protocol abstracts user interface configuration for BluetoothLe device.

Copyright (c) 2017 - 2019, Intel Corporation. All rights reserved.
SPDX-License-Identifier: BSD-2-Clause-Patent

Revision Reference:

This Protocol is introduced in UEFI Specification 2.7

Macro Definition Documentation

#define EFI_BLUETOOTH_LE_CONFIG_PROTOCOL_GUID

Value:

{ \
    0x8f76da58, 0x1f99, 0x4275, { 0xa4, 0xec, 0x47, 0x56, 0x51, 0x5b, 0x1c, 0xe8 } \
  }

Typedef Documentation

typedef IN VOID IN EFI_BLUETOOTH_CONNECT_COMPLETE_CALLBACK_TYPE IN BLUETOOTH_LE_ADDRESS * BDAddr

typedef IN EFI_BLUETOOTH_LE_CONFIG_CONNECT_COMPLETE_CALLBACK Callback

typedef IN VOID IN EFI_BLUETOOTH_LE_SCAN_CALLBACK_INFORMATION* CallbackInfo

typedef IN VOID IN EFI_BLUETOOTH_CONNECT_COMPLETE_CALLBACK_TYPE CallbackType

typedef IN EFI_BLUETOOTH_LE_CONFIG_CONNECT_COMPLETE_CALLBACK IN VOID* Context

typedef IN VOID IN BLUETOOTH_LE_ADDRESS IN EFI_BLUETOOTH_LE_SMP_DATA_TYPE IN UINTN IN VOID* Data

typedef IN VOID IN BLUETOOTH_LE_ADDRESS IN EFI_BLUETOOTH_LE_SMP_DATA_TYPE IN UINTN DataSize

typedef IN VOID IN BLUETOOTH_LE_ADDRESS IN EFI_BLUETOOTH_LE_SMP_DATA_TYPE DataType

typedef EFI_STATUS(EFIAPI * EFI_BLUETOOTH_LE_CONFIG_CONNECT)(IN EFI_BLUETOOTH_LE_CONFIG_PROTOCOL *This, IN BOOLEAN AutoReconnect, IN BOOLEAN DoBonding, IN EFI_BLUETOOTH_LE_CONFIG_CONNECT_PARAMETER *ConnectParameter, IN BLUETOOTH_LE_ADDRESS *BD_ADDR)

Connect a BluetoothLE device.

The Connect() function connects a Bluetooth device. When this function is returned successfully, a new EFI_BLUETOOTH_IO_PROTOCOL is created.

Parameters

[in]	This	Pointer to the EFI_BLUETOOTH_LE_CONFIG_PROTOCOL instance.
[in]	AutoReconnect	If TRUE, the BluetoothLE host controller needs to do an auto reconnect. If FALSE, the BluetoothLE host controller does not do an auto reconnect.
[in]	DoBonding	If TRUE, the BluetoothLE host controller needs to do a bonding. If FALSE, the BluetoothLE host controller does not do a bonding.
[in]	ConnectParameter	If it is not NULL, the ConnectParameter is used to perform a scan by the BluetoothLE bus driver. If it is NULL, the default parameter is used.
[in]	BD_ADDR	The address of the BluetoothLE device to be connected.

Return values

EFI_SUCCESS	The BluetoothLE device is connected successfully.
EFI_ALREADY_STARTED	The BluetoothLE device is already connected.
EFI_NOT_FOUND	The BluetoothLE device is not found.
EFI_DEVICE_ERROR	A hardware error occurred trying to connect the BluetoothLE device.

typedef EFI_STATUS(EFIAPI * EFI_BLUETOOTH_LE_CONFIG_DISCONNECT)(IN EFI_BLUETOOTH_LE_CONFIG_PROTOCOL *This, IN BLUETOOTH_LE_ADDRESS *BD_ADDR, IN UINT8 Reason)

Disconnect a BluetoothLE device.

The Disconnect() function disconnects a BluetoothLE device. When this function is returned successfully, the EFI_BLUETOOTH_ATTRIBUTE_PROTOCOL associated with this device is destroyed and all services associated are stopped.

Parameters

[in]	This	Pointer to the EFI_BLUETOOTH_LE_CONFIG_PROTOCOL instance.
[in]	BD_ADDR	The address of BluetoothLE device to be connected.
[in]	Reason	Bluetooth disconnect reason. See Bluetooth specification for detail.

Return values

EFI_SUCCESS	The BluetoothLE device is disconnected successfully.
EFI_NOT_STARTED	The BluetoothLE device is not connected.
EFI_NOT_FOUND	The BluetoothLE device is not found.
EFI_DEVICE_ERROR	A hardware error occurred trying to disconnect the BluetoothLE device.

typedef EFI_STATUS(EFIAPI * EFI_BLUETOOTH_LE_CONFIG_INIT)(IN EFI_BLUETOOTH_LE_CONFIG_PROTOCOL *This)

Initialize BluetoothLE host controller and local device.

The Init() function initializes BluetoothLE host controller and local device.

Parameters

[in]

This

Pointer to the EFI_BLUETOOTH_LE_CONFIG_PROTOCOL instance.

Return values

EFI_SUCCESS	The BluetoothLE host controller and local device is initialized successfully.
EFI_DEVICE_ERROR	A hardware error occurred trying to initialize the BluetoothLE host controller and local device.

typedef struct _EFI_BLUETOOTH_LE_CONFIG_PROTOCOL EFI_BLUETOOTH_LE_CONFIG_PROTOCOL

typedef EFI_STATUS(EFIAPI * EFI_BLUETOOTH_LE_CONFIG_SCAN)(IN EFI_BLUETOOTH_LE_CONFIG_PROTOCOL *This, IN BOOLEAN ReScan, IN UINT32 Timeout, IN EFI_BLUETOOTH_LE_CONFIG_SCAN_PARAMETER *ScanParameter, IN EFI_BLUETOOTH_LE_CONFIG_SCAN_CALLBACK_FUNCTION Callback, IN VOID *Context)

Scan BluetoothLE device.

The Scan() function scans BluetoothLE device. When this function is returned, it just means scan request is submitted. It does not mean scan process is started or finished. Whenever there is a BluetoothLE device is found, the Callback function will be called. Callback function might be called before this function returns or after this function returns

Parameters

[in]	This	Pointer to the EFI_BLUETOOTH_LE_CONFIG_PROTOCOL instance.
[in]	ReScan	If TRUE, a new scan request is submitted no matter there is scan result before. If FALSE and there is scan result, the previous scan result is returned and no scan request is submitted.
[in]	Timeout	Duration in milliseconds for which to scan.
[in]	ScanParameter	If it is not NULL, the ScanParameter is used to perform a scan by the BluetoothLE bus driver. If it is NULL, the default parameter is used.
[in]	Callback	The callback function. This function is called if a BluetoothLE device is found during scan process.
[in]	Context	Data passed into Callback function. This is optional parameter and may be NULL.

Return values

EFI_SUCCESS	The Bluetooth scan request is submitted.
EFI_DEVICE_ERROR	A hardware error occurred trying to scan the BluetoothLE device.

typedef IN BLUETOOTH_LE_ADDRESS IN EFI_BLUETOOTH_LE_SMP_EVENT_DATA_TYPE EventDataType

typedef IN VOID IN EFI_BLUETOOTH_CONNECT_COMPLETE_CALLBACK_TYPE IN BLUETOOTH_LE_ADDRESS IN VOID* InputBuffer

typedef IN VOID IN EFI_BLUETOOTH_CONNECT_COMPLETE_CALLBACK_TYPE IN BLUETOOTH_LE_ADDRESS IN VOID IN UINTN InputBufferSize

typedef IN VOID IN BLUETOOTH_LE_ADDRESS IN EFI_BLUETOOTH_LE_SMP_DATA_TYPE Type

Enumeration Type Documentation

enum EFI_BLUETOOTH_LE_SMP_DATA_TYPE

Enumerator
EfiBluetoothSmpLocalIR
EfiBluetoothSmpLocalER
EfiBluetoothSmpLocalDHK
EfiBluetoothSmpKeysDistributed
EfiBluetoothSmpKeySize
EfiBluetoothSmpKeyType
EfiBluetoothSmpPeerLTK
EfiBluetoothSmpPeerIRK
EfiBluetoothSmpPeerCSRK
EfiBluetoothSmpPeerRand
EfiBluetoothSmpPeerEDIV
EfiBluetoothSmpPeerSignCounter
EfiBluetoothSmpLocalLTK
EfiBluetoothSmpLocalIRK
EfiBluetoothSmpLocalCSRK
EfiBluetoothSmpLocalSignCounter
EfiBluetoothSmpLocalDIV
EfiBluetoothSmpPeerAddressList
EfiBluetoothSmpMax

enum EFI_BLUETOOTH_LE_SMP_EVENT_DATA_TYPE

Enumerator
EfiBluetoothSmpAuthorizationRequestEvent	It indicates an authorization request. No data is associated with the callback input. In the output data, the application should return the authorization value. The data structure is BOOLEAN. TRUE means YES. FALSE means NO.
EfiBluetoothSmpPasskeyReadyEvent	It indicates that a passkey has been generated locally by the driver, and the same passkey should be entered at the remote device. The callback input data is the passkey of type UINT32, to be displayed by the application. No output data should be returned.
EfiBluetoothSmpPasskeyRequestEvent	It indicates that the driver is requesting for the passkey has been generated at the remote device. No data is associated with the callback input. The output data is the passkey of type UINT32, to be entered by the user.
EfiBluetoothSmpOOBDataRequestEvent	It indicates that the driver is requesting for the passkey that has been pre-shared out-of-band with the remote device. No data is associated with the callback input. The output data is the stored OOB data of type UINT8[16].
EfiBluetoothSmpNumericComparisonEvent	In indicates that a number have been generated locally by the bus driver, and also at the remote device, and the bus driver wants to know if the two numbers match. The callback input data is the number of type UINT32. The output data is confirmation value of type BOOLEAN. TRUE means comparison pass. FALSE means comparison fail.

Function Documentation

typedef EFI_STATUS

(

EFIAPI *

EFI_BLUETOOTH_LE_CONFIG_REGISTER_CONNECT_COMPLETE_CALLBACK

)

Callback function, it is called if a BluetoothLE device is found during scan process.

Parameters

[in]	This	Pointer to the EFI_BLUETOOTH_LE_CONFIG_PROTOCOL instance.
[in]	Context	Context passed from scan request.
[in]	CallbackInfo	Data related to scan result. NULL CallbackInfo means scan complete.

Return values

EFI_SUCCESS

The callback function complete successfully.

Get BluetoothLE configuration data.

The GetData() function returns BluetoothLE configuration data. For remote BluetoothLE device configuration data, please use GetRemoteData() function with valid BD_ADDR.

Parameters

[in]	This	Pointer to the EFI_BLUETOOTH_LE_CONFIG_PROTOCOL instance.
[in]	DataType	Configuration data type.
[in,out]	DataSize	On input, indicates the size, in bytes, of the data buffer specified by Data. On output, indicates the amount of data actually returned.
[in,out]	Data	A pointer to the buffer of data that will be returned.

Return values

EFI_SUCCESS	The BluetoothLE configuration data is returned successfully.
EFI_INVALID_PARAMETER	One or more of the following conditions is TRUE: DataSize is NULL. *DataSize is 0. Data is NULL.
EFI_UNSUPPORTED	The DataType is unsupported.
EFI_NOT_FOUND	The DataType is not found.
EFI_BUFFER_TOO_SMALL	The buffer is too small to hold the buffer.

Set BluetoothLE configuration data.

The SetData() function sets local BluetoothLE device configuration data. Not all DataType can be set.

Parameters

[in]	This	Pointer to the EFI_BLUETOOTH_LE_CONFIG_PROTOCOL instance.
[in]	DataType	Configuration data type.
[in]	DataSize	Indicates the size, in bytes, of the data buffer specified by Data.
[in]	Data	A pointer to the buffer of data that will be set.

Return values

EFI_SUCCESS	The BluetoothLE configuration data is set successfully.
EFI_INVALID_PARAMETER	One or more of the following conditions is TRUE: DataSize is 0. Data is NULL.
EFI_UNSUPPORTED	The DataType is unsupported.
EFI_WRITE_PROTECTED	Cannot set configuration data.

Get remove BluetoothLE device configuration data.

The GetRemoteData() function returns remote BluetoothLE device configuration data.

Parameters

[in]	This	Pointer to the EFI_BLUETOOTH_LE_CONFIG_PROTOCOL instance.
[in]	DataType	Configuration data type.
[in]	BDAddr	Remote BluetoothLE device address.
[in,out]	DataSize	On input, indicates the size, in bytes, of the data buffer specified by Data. On output, indicates the amount of data actually returned.
[in,out]	Data	A pointer to the buffer of data that will be returned.

Return values

EFI_SUCCESS	The remote BluetoothLE device configuration data is returned successfully.
EFI_INVALID_PARAMETER	One or more of the following conditions is TRUE: DataSize is NULL. *DataSize is 0. Data is NULL.
EFI_UNSUPPORTED	The DataType is unsupported.
EFI_NOT_FOUND	The DataType is not found.
EFI_BUFFER_TOO_SMALL	The buffer is too small to hold the buffer.

The callback function for SMP.

Parameters

[in]	This	Pointer to the EFI_BLUETOOTH_LE_CONFIG_PROTOCOL instance.
[in]	Context	Data passed into callback function. This is optional parameter and may be NULL.
[in]	BDAddr	Remote BluetoothLE device address.
[in]	EventDataType	Event data type in EFI_BLUETOOTH_LE_SMP_EVENT_DATA_TYPE.
[in]	DataSize	Indicates the size, in bytes, of the data buffer specified by Data.
[in]	Data	A pointer to the buffer of data.

Return values

EFI_SUCCESS

The callback function complete successfully.

Register Security Manager Protocol callback function for user authentication/authorization.

The RegisterSmpAuthCallback() function register Security Manager Protocol callback function for user authentication/authorization.

Parameters

[in]	This	Pointer to the EFI_BLUETOOTH_LE_CONFIG_PROTOCOL instance.
[in]	Callback	Callback function for user authentication/authorization.
[in]	Context	Data passed into Callback function. This is optional parameter and may be NULL.

Return values

EFI_SUCCESS	The SMP callback function is registered successfully.
EFI_ALREADY_STARTED	A callback function is already registered on the same attribute opcode and attribute handle, when the Callback is not NULL.
EFI_NOT_STARTED	A callback function is not registered on the same attribute opcode and attribute handle, when the Callback is NULL.

Send user authentication/authorization to remote device.

The SendSmpAuthData() function sends user authentication/authorization to remote device. It should be used to send these information after the caller gets the request data from the callback function by RegisterSmpAuthCallback().

Parameters

[in]	This	Pointer to the EFI_BLUETOOTH_LE_CONFIG_PROTOCOL instance.
[in]	BDAddr	Remote BluetoothLE device address.
[in]	EventDataType	Event data type in EFI_BLUETOOTH_LE_SMP_EVENT_DATA_TYPE.
[in]	DataSize	The size of Data in bytes, of the data buffer specified by Data.
[in]	Data	A pointer to the buffer of data that will be sent. The data format depends on the type of SMP event data being responded to.

Return values

EFI_SUCCESS	The SMP authorization data is sent successfully.
EFI_NOT_READY	SMP is not in the correct state to receive the auth data.

The callback function to get SMP data.

Parameters

[in]	This	Pointer to the EFI_BLUETOOTH_LE_CONFIG_PROTOCOL instance.
[in]	Context	Data passed into callback function. This is optional parameter and may be NULL.
[in]	BDAddr	Remote BluetoothLE device address. For Local device setting, it should be NULL.
[in]	DataType	Data type in EFI_BLUETOOTH_LE_SMP_DATA_TYPE.
[in,out]	DataSize	On input, indicates the size, in bytes, of the data buffer specified by Data. On output, indicates the amount of data actually returned.
[out]	Data	A pointer to the buffer of data that will be returned.

Return values

EFI_SUCCESS

The callback function complete successfully.

Register a callback function to get SMP related data.

The RegisterSmpGetDataCallback() function registers a callback function to get SMP related data.

Parameters

[in]	This	Pointer to the EFI_BLUETOOTH_LE_CONFIG_PROTOCOL instance.
[in]	Callback	Callback function for SMP get data.
[in]	Context	Data passed into Callback function. This is optional parameter and may be NULL.

Return values

EFI_SUCCESS	The SMP get data callback function is registered successfully.
EFI_ALREADY_STARTED	A callback function is already registered on the same attribute opcode and attribute handle, when the Callback is not NULL.
EFI_NOT_STARTED	A callback function is not registered on the same attribute opcode and attribute handle, when the Callback is NULL

The callback function to set SMP data.

Parameters

[in]	This	Pointer to the EFI_BLUETOOTH_LE_CONFIG_PROTOCOL instance.
[in]	Context	Data passed into callback function. This is optional parameter and may be NULL.
[in]	BDAddr	Remote BluetoothLE device address.
[in]	DataType	Data type in EFI_BLUETOOTH_LE_SMP_DATA_TYPE.
[in]	DataSize	Indicates the size, in bytes, of the data buffer specified by Data.
[in]	Data	A pointer to the buffer of data.

Return values

EFI_SUCCESS

The callback function complete successfully.

Register a callback function to set SMP related data.

The RegisterSmpSetDataCallback() function registers a callback function to set SMP related data.

Parameters

[in]	This	Pointer to the EFI_BLUETOOTH_LE_CONFIG_PROTOCOL instance.
[in]	Callback	Callback function for SMP set data.
[in]	Context	Data passed into Callback function. This is optional parameter and may be NULL.

Return values

EFI_SUCCESS	The SMP set data callback function is registered successfully.
EFI_ALREADY_STARTED	A callback function is already registered on the same attribute opcode and attribute handle, when the Callback is not NULL.
EFI_NOT_STARTED	A callback function is not registered on the same attribute opcode and attribute handle, when the Callback is NULL

The callback function to hook connect complete event.

Parameters

[in]	This	Pointer to the EFI_BLUETOOTH_LE_CONFIG_PROTOCOL instance.
[in]	Context	Data passed into callback function. This is optional parameter and may be NULL.
[in]	CallbackType	The value defined in EFI_BLUETOOTH_CONNECT_COMPLETE_CALLBACK_TYPE.
[in]	BDAddr	Remote BluetoothLE device address.
[in]	InputBuffer	A pointer to the buffer of data that is input from callback caller.
[in]	InputBufferSize	Indicates the size, in bytes, of the data buffer specified by InputBuffer.

Return values

EFI_SUCCESS

The callback function complete successfully.

Register link connect complete callback function.

The RegisterLinkConnectCompleteCallback() function registers Bluetooth link connect complete callback function. The Bluetooth Configuration driver may call RegisterLinkConnectCompleteCallback() to register a callback function. During pairing, Bluetooth bus driver must trigger this callback function to report device state, if it is registered. Then Bluetooth Configuration driver will get information on device connection, according to CallbackType defined by EFI_BLUETOOTH_CONNECT_COMPLETE_CALLBACK_TYPE

Parameters

[in]	This	Pointer to the EFI_BLUETOOTH_LE_CONFIG_PROTOCOL instance.
[in]	Callback	The callback function. NULL means unregister.
[in]	Context	Data passed into Callback function. This is optional parameter and may be NULL.

Return values

EFI_SUCCESS	The link connect complete callback function is registered successfully.
EFI_ALREADY_STARTED	A callback function is already registered on the same attribute opcode and attribute handle, when the Callback is not NULL.
EFI_NOT_STARTED	A callback function is not registered on the same attribute opcode and attribute handle, when the Callback is NULL

Variable Documentation

EFI_GUID gEfiBluetoothLeConfigProtocolGuid