MdePkg/Include/Protocol/Mtftp4.h - edk2 - Git at Google

 /** @file
   EFI Multicast Trivial File Transfer Protocol Definition

 Copyright (c) 2006 - 2018, Intel Corporation. All rights reserved.<BR>
 SPDX-License-Identifier: BSD-2-Clause-Patent

   @par Revision Reference:
   This Protocol is introduced in UEFI Specification 2.0

 **/

 #ifndef __EFI_MTFTP4_PROTOCOL_H__
 #define __EFI_MTFTP4_PROTOCOL_H__

 #define EFI_MTFTP4_SERVICE_BINDING_PROTOCOL_GUID \
   { \
     0x2FE800BE, 0x8F01, 0x4aa6, {0x94, 0x6B, 0xD7, 0x13, 0x88, 0xE1, 0x83, 0x3F } \
   }

 #define EFI_MTFTP4_PROTOCOL_GUID \
   { \
     0x78247c57, 0x63db, 0x4708, {0x99, 0xc2, 0xa8, 0xb4, 0xa9, 0xa6, 0x1f, 0x6b } \
   }

 typedef struct _EFI_MTFTP4_PROTOCOL  EFI_MTFTP4_PROTOCOL;
 typedef struct _EFI_MTFTP4_TOKEN     EFI_MTFTP4_TOKEN;

 //
 // MTFTP4 packet opcode definition
 //
 #define EFI_MTFTP4_OPCODE_RRQ    1
 #define EFI_MTFTP4_OPCODE_WRQ    2
 #define EFI_MTFTP4_OPCODE_DATA   3
 #define EFI_MTFTP4_OPCODE_ACK    4
 #define EFI_MTFTP4_OPCODE_ERROR  5
 #define EFI_MTFTP4_OPCODE_OACK   6
 #define EFI_MTFTP4_OPCODE_DIR    7
 #define EFI_MTFTP4_OPCODE_DATA8  8
 #define EFI_MTFTP4_OPCODE_ACK8   9

 //
 // MTFTP4 error code definition
 //
 #define EFI_MTFTP4_ERRORCODE_NOT_DEFINED          0
 #define EFI_MTFTP4_ERRORCODE_FILE_NOT_FOUND       1
 #define EFI_MTFTP4_ERRORCODE_ACCESS_VIOLATION     2
 #define EFI_MTFTP4_ERRORCODE_DISK_FULL            3
 #define EFI_MTFTP4_ERRORCODE_ILLEGAL_OPERATION    4
 #define EFI_MTFTP4_ERRORCODE_UNKNOWN_TRANSFER_ID  5
 #define EFI_MTFTP4_ERRORCODE_FILE_ALREADY_EXISTS  6
 #define EFI_MTFTP4_ERRORCODE_NO_SUCH_USER         7
 #define EFI_MTFTP4_ERRORCODE_REQUEST_DENIED       8

 //
 // MTFTP4 pacekt definitions
 //
 #pragma pack(1)

 typedef struct {
   UINT16    OpCode;
   UINT8     Filename[1];
 } EFI_MTFTP4_REQ_HEADER;

 typedef struct {
   UINT16    OpCode;
   UINT8     Data[1];
 } EFI_MTFTP4_OACK_HEADER;

 typedef struct {
   UINT16    OpCode;
   UINT16    Block;
   UINT8     Data[1];
 } EFI_MTFTP4_DATA_HEADER;

 typedef struct {
   UINT16    OpCode;
   UINT16    Block[1];
 } EFI_MTFTP4_ACK_HEADER;

 typedef struct {
   UINT16    OpCode;
   UINT64    Block;
   UINT8     Data[1];
 } EFI_MTFTP4_DATA8_HEADER;

 typedef struct {
   UINT16    OpCode;
   UINT64    Block[1];
 } EFI_MTFTP4_ACK8_HEADER;

 typedef struct {
   UINT16    OpCode;
   UINT16    ErrorCode;
   UINT8     ErrorMessage[1];
 } EFI_MTFTP4_ERROR_HEADER;

 typedef union {
   ///
   /// Type of packets as defined by the MTFTPv4 packet opcodes.
   ///
   UINT16                     OpCode;
   ///
   /// Read request packet header.
   ///
   EFI_MTFTP4_REQ_HEADER      Rrq;
   ///
   /// Write request packet header.
   ///
   EFI_MTFTP4_REQ_HEADER      Wrq;
   ///
   /// Option acknowledge packet header.
   ///
   EFI_MTFTP4_OACK_HEADER     Oack;
   ///
   /// Data packet header.
   ///
   EFI_MTFTP4_DATA_HEADER     Data;
   ///
   /// Acknowledgement packet header.
   ///
   EFI_MTFTP4_ACK_HEADER      Ack;
   ///
   /// Data packet header with big block number.
   ///
   EFI_MTFTP4_DATA8_HEADER    Data8;
   ///
   /// Acknowledgement header with big block num.
   ///
   EFI_MTFTP4_ACK8_HEADER     Ack8;
   ///
   /// Error packet header.
   ///
   EFI_MTFTP4_ERROR_HEADER    Error;
 } EFI_MTFTP4_PACKET;

 #pragma pack()

 ///
 /// MTFTP4 option definition.
 ///
 typedef struct {
   UINT8    *OptionStr;
   UINT8    *ValueStr;
 } EFI_MTFTP4_OPTION;

 typedef struct {
   BOOLEAN             UseDefaultSetting;
   EFI_IPv4_ADDRESS    StationIp;
   EFI_IPv4_ADDRESS    SubnetMask;
   UINT16              LocalPort;
   EFI_IPv4_ADDRESS    GatewayIp;
   EFI_IPv4_ADDRESS    ServerIp;
   UINT16              InitialServerPort;
   UINT16              TryCount;
   UINT16              TimeoutValue;
 } EFI_MTFTP4_CONFIG_DATA;

 typedef struct {
   EFI_MTFTP4_CONFIG_DATA    ConfigData;
   UINT8                     SupportedOptionCount;
   UINT8                     **SupportedOptoins;
   UINT8                     UnsupportedOptionCount;
   UINT8                     **UnsupportedOptoins;
 } EFI_MTFTP4_MODE_DATA;

 typedef struct {
   EFI_IPv4_ADDRESS    GatewayIp;
   EFI_IPv4_ADDRESS    ServerIp;
   UINT16              ServerPort;
   UINT16              TryCount;
   UINT16              TimeoutValue;
 } EFI_MTFTP4_OVERRIDE_DATA;

 //
 // Protocol interfaces definition
 //

 /**
   A callback function that is provided by the caller to intercept
   the EFI_MTFTP4_OPCODE_DATA or EFI_MTFTP4_OPCODE_DATA8 packets processed in the
   EFI_MTFTP4_PROTOCOL.ReadFile() function, and alternatively to intercept
   EFI_MTFTP4_OPCODE_OACK or EFI_MTFTP4_OPCODE_ERROR packets during a call to
   EFI_MTFTP4_PROTOCOL.ReadFile(), WriteFile() or ReadDirectory().

   @param  This        The pointer to the EFI_MTFTP4_PROTOCOL instance.
   @param  Token       The token that the caller provided in the
                       EFI_MTFTP4_PROTOCOL.ReadFile(), WriteFile()
                       or ReadDirectory() function.
   @param  PacketLen   Indicates the length of the packet.
   @param  Packet      The pointer to an MTFTPv4 packet.

   @retval EFI_SUCCESS The operation was successful.
   @retval Others      Aborts the transfer process.

 **/
 typedef
 EFI_STATUS
 (EFIAPI *EFI_MTFTP4_CHECK_PACKET)(
   IN EFI_MTFTP4_PROTOCOL  *This,
   IN EFI_MTFTP4_TOKEN     *Token,
   IN UINT16               PacketLen,
   IN EFI_MTFTP4_PACKET    *Paket
   );

 /**
   Timeout callback function.

   @param  This           The pointer to the EFI_MTFTP4_PROTOCOL instance.
   @param  Token          The token that is provided in the
                          EFI_MTFTP4_PROTOCOL.ReadFile() or
                          EFI_MTFTP4_PROTOCOL.WriteFile() or
                          EFI_MTFTP4_PROTOCOL.ReadDirectory() functions
                          by the caller.

   @retval EFI_SUCCESS   The operation was successful.
   @retval Others        Aborts download process.

 **/
 typedef
 EFI_STATUS
 (EFIAPI *EFI_MTFTP4_TIMEOUT_CALLBACK)(
   IN EFI_MTFTP4_PROTOCOL  *This,
   IN EFI_MTFTP4_TOKEN     *Token
   );

 /**
   A callback function that the caller provides to feed data to the
   EFI_MTFTP4_PROTOCOL.WriteFile() function.

   @param  This   The pointer to the EFI_MTFTP4_PROTOCOL instance.
   @param  Token  The token provided in the
                  EFI_MTFTP4_PROTOCOL.WriteFile() by the caller.
   @param  Length Indicates the length of the raw data wanted on input, and the
                  length the data available on output.
   @param  Buffer The pointer to the buffer where the data is stored.

   @retval EFI_SUCCESS The operation was successful.
   @retval Others      Aborts session.

 **/
 typedef
 EFI_STATUS
 (EFIAPI *EFI_MTFTP4_PACKET_NEEDED)(
   IN  EFI_MTFTP4_PROTOCOL *This,
   IN  EFI_MTFTP4_TOKEN    *Token,
   IN  OUT UINT16          *Length,
   OUT VOID                **Buffer
   );

 /**
   Submits an asynchronous interrupt transfer to an interrupt endpoint of a USB device.

   @param  This     The pointer to the EFI_MTFTP4_PROTOCOL instance.
   @param  ModeData The pointer to storage for the EFI MTFTPv4 Protocol driver mode data.

   @retval EFI_SUCCESS           The configuration data was successfully returned.
   @retval EFI_OUT_OF_RESOURCES  The required mode data could not be allocated.
   @retval EFI_INVALID_PARAMETER This is NULL or ModeData is NULL.

 **/
 typedef
 EFI_STATUS
 (EFIAPI *EFI_MTFTP4_GET_MODE_DATA)(
   IN  EFI_MTFTP4_PROTOCOL     *This,
   OUT EFI_MTFTP4_MODE_DATA    *ModeData
   );

 /**
   Initializes, changes, or resets the default operational setting for this
   EFI MTFTPv4 Protocol driver instance.

   @param  This            The pointer to the EFI_MTFTP4_PROTOCOL instance.
   @param  MtftpConfigData The pointer to the configuration data structure.

   @retval EFI_SUCCESS           The EFI MTFTPv4 Protocol driver was configured successfully.
   @retval EFI_INVALID_PARAMETER One or more parameters are invalid.
   @retval EFI_ACCESS_DENIED     The EFI configuration could not be changed at this time because
                                 there is one MTFTP background operation in progress.
   @retval EFI_NO_MAPPING        When using a default address, configuration (DHCP, BOOTP,
                                 RARP, etc.) has not finished yet.
   @retval EFI_UNSUPPORTED       A configuration protocol (DHCP, BOOTP, RARP, etc.) could not
                                 be located when clients choose to use the default address
                                 settings.
   @retval EFI_OUT_OF_RESOURCES  The EFI MTFTPv4 Protocol driver instance data could not be
                                 allocated.
   @retval EFI_DEVICE_ERROR      An unexpected system or network error occurred. The EFI
                                  MTFTPv4 Protocol driver instance is not configured.

 **/
 typedef
 EFI_STATUS
 (EFIAPI *EFI_MTFTP4_CONFIGURE)(
   IN EFI_MTFTP4_PROTOCOL       *This,
   IN EFI_MTFTP4_CONFIG_DATA    *MtftpConfigData OPTIONAL
   );

 /**
   Gets information about a file from an MTFTPv4 server.

   @param  This         The pointer to the EFI_MTFTP4_PROTOCOL instance.
   @param  OverrideData Data that is used to override the existing parameters. If NULL,
                        the default parameters that were set in the
                        EFI_MTFTP4_PROTOCOL.Configure() function are used.
   @param  Filename     The pointer to null-terminated ASCII file name string.
   @param  ModeStr      The pointer to null-terminated ASCII mode string. If NULL, "octet" will be used.
   @param  OptionCount  Number of option/value string pairs in OptionList.
   @param  OptionList   The pointer to array of option/value string pairs. Ignored if
                        OptionCount is zero.
   @param  PacketLength The number of bytes in the returned packet.
   @param  Packet       The pointer to the received packet. This buffer must be freed by
                        the caller.

   @retval EFI_SUCCESS              An MTFTPv4 OACK packet was received and is in the Packet.
   @retval EFI_INVALID_PARAMETER    One or more of the following conditions is TRUE:
                                    - This is NULL.
                                    - Filename is NULL.
                                    - OptionCount is not zero and OptionList is NULL.
                                    - One or more options in OptionList have wrong format.
                                    - PacketLength is NULL.
                                    - One or more IPv4 addresses in OverrideData are not valid
                                      unicast IPv4 addresses if OverrideData is not NULL.
   @retval EFI_UNSUPPORTED          One or more options in the OptionList are in the
                                    unsupported list of structure EFI_MTFTP4_MODE_DATA.
   @retval EFI_NOT_STARTED          The EFI MTFTPv4 Protocol driver has not been started.
   @retval EFI_NO_MAPPING           When using a default address, configuration (DHCP, BOOTP,
                                    RARP, etc.) has not finished yet.
   @retval EFI_ACCESS_DENIED        The previous operation has not completed yet.
   @retval EFI_OUT_OF_RESOURCES     Required system resources could not be allocated.
   @retval EFI_TFTP_ERROR           An MTFTPv4 ERROR packet was received and is in the Packet.
   @retval EFI_NETWORK_UNREACHABLE  An ICMP network unreachable error packet was received and the Packet is set to NULL.
   @retval EFI_HOST_UNREACHABLE     An ICMP host unreachable error packet was received and the Packet is set to NULL.
   @retval EFI_PROTOCOL_UNREACHABLE An ICMP protocol unreachable error packet was received and the Packet is set to NULL.
   @retval EFI_PORT_UNREACHABLE     An ICMP port unreachable error packet was received and the Packet is set to NULL.
   @retval EFI_ICMP_ERROR           Some other ICMP ERROR packet was received and is in the Buffer.
   @retval EFI_PROTOCOL_ERROR       An unexpected MTFTPv4 packet was received and is in the Packet.
   @retval EFI_TIMEOUT              No responses were received from the MTFTPv4 server.
   @retval EFI_DEVICE_ERROR         An unexpected network error or system error occurred.
   @retval EFI_NO_MEDIA             There was a media error.

 **/
 typedef
 EFI_STATUS
 (EFIAPI *EFI_MTFTP4_GET_INFO)(
   IN  EFI_MTFTP4_PROTOCOL      *This,
   IN  EFI_MTFTP4_OVERRIDE_DATA *OverrideData   OPTIONAL,
   IN  UINT8                    *Filename,
   IN  UINT8                    *ModeStr        OPTIONAL,
   IN  UINT8                    OptionCount,
   IN  EFI_MTFTP4_OPTION        *OptionList,
   OUT UINT32                   *PacketLength,
   OUT EFI_MTFTP4_PACKET        **Packet        OPTIONAL
   );

 /**
   Parses the options in an MTFTPv4 OACK packet.

   @param  This         The pointer to the EFI_MTFTP4_PROTOCOL instance.
   @param  PacketLen    Length of the OACK packet to be parsed.
   @param  Packet       The pointer to the OACK packet to be parsed.
   @param  OptionCount  The pointer to the number of options in following OptionList.
   @param  OptionList   The pointer to EFI_MTFTP4_OPTION storage. Call the EFI Boot
                        Service FreePool() to release the OptionList if the options
                        in this OptionList are not needed any more.

   @retval EFI_SUCCESS           The OACK packet was valid and the OptionCount and
                                 OptionList parameters have been updated.
   @retval EFI_INVALID_PARAMETER One or more of the following conditions is TRUE:
                                 - PacketLen is 0.
                                 - Packet is NULL or Packet is not a valid MTFTPv4 packet.
                                 - OptionCount is NULL.
   @retval EFI_NOT_FOUND         No options were found in the OACK packet.
   @retval EFI_OUT_OF_RESOURCES  Storage for the OptionList array cannot be allocated.
   @retval EFI_PROTOCOL_ERROR    One or more of the option fields is invalid.

 **/
 typedef
 EFI_STATUS
 (EFIAPI *EFI_MTFTP4_PARSE_OPTIONS)(
   IN  EFI_MTFTP4_PROTOCOL      *This,
   IN  UINT32                   PacketLen,
   IN  EFI_MTFTP4_PACKET        *Packet,
   OUT UINT32                   *OptionCount,
   OUT EFI_MTFTP4_OPTION        **OptionList OPTIONAL
   );

 /**
   Downloads a file from an MTFTPv4 server.

   @param  This  The pointer to the EFI_MTFTP4_PROTOCOL instance.
   @param  Token The pointer to the token structure to provide the parameters that are
                 used in this operation.

   @retval EFI_SUCCESS              The data file has been transferred successfully.
   @retval EFI_OUT_OF_RESOURCES     Required system resources could not be allocated.
   @retval EFI_BUFFER_TOO_SMALL     BufferSize is not zero but not large enough to hold the
                                    downloaded data in downloading process.
   @retval EFI_ABORTED              Current operation is aborted by user.
   @retval EFI_NETWORK_UNREACHABLE  An ICMP network unreachable error packet was received.
   @retval EFI_HOST_UNREACHABLE     An ICMP host unreachable error packet was received.
   @retval EFI_PROTOCOL_UNREACHABLE An ICMP protocol unreachable error packet was received.
   @retval EFI_PORT_UNREACHABLE     An ICMP port unreachable error packet was received.
   @retval EFI_ICMP_ERROR           Some other  ICMP ERROR packet was received.
   @retval EFI_TIMEOUT              No responses were received from the MTFTPv4 server.
   @retval EFI_TFTP_ERROR           An MTFTPv4 ERROR packet was received.
   @retval EFI_DEVICE_ERROR         An unexpected network error or system error occurred.
   @retval EFI_NO_MEDIA             There was a media error.

 **/
 typedef
 EFI_STATUS
 (EFIAPI *EFI_MTFTP4_READ_FILE)(
   IN EFI_MTFTP4_PROTOCOL       *This,
   IN EFI_MTFTP4_TOKEN          *Token
   );

 /**
   Sends a file to an MTFTPv4 server.

   @param  This  The pointer to the EFI_MTFTP4_PROTOCOL instance.
   @param  Token The pointer to the token structure to provide the parameters that are
                 used in this operation.

   @retval EFI_SUCCESS           The upload session has started.
   @retval EFI_UNSUPPORTED       The operation is not supported by this implementation.
   @retval EFI_INVALID_PARAMETER One or more parameters are invalid.
   @retval EFI_UNSUPPORTED       One or more options in the Token.OptionList are in
                                 the unsupported list of structure EFI_MTFTP4_MODE_DATA.
   @retval EFI_NOT_STARTED       The EFI MTFTPv4 Protocol driver has not been started.
   @retval EFI_NO_MAPPING        When using a default address, configuration (DHCP, BOOTP,
                                 RARP, etc.) is not finished yet.
   @retval EFI_ALREADY_STARTED   This Token is already being used in another MTFTPv4 session.
   @retval EFI_OUT_OF_RESOURCES  Required system resources could not be allocated.
   @retval EFI_ACCESS_DENIED     The previous operation has not completed yet.
   @retval EFI_DEVICE_ERROR      An unexpected network error or system error occurred.

 **/
 typedef
 EFI_STATUS
 (EFIAPI *EFI_MTFTP4_WRITE_FILE)(
   IN EFI_MTFTP4_PROTOCOL       *This,
   IN EFI_MTFTP4_TOKEN          *Token
   );

 /**
   Downloads a data file "directory" from an MTFTPv4 server. May be unsupported in some EFI
   implementations.

   @param  This  The pointer to the EFI_MTFTP4_PROTOCOL instance.
   @param  Token The pointer to the token structure to provide the parameters that are
                 used in this operation.

   @retval EFI_SUCCESS           The MTFTPv4 related file "directory" has been downloaded.
   @retval EFI_UNSUPPORTED       The operation is not supported by this implementation.
   @retval EFI_INVALID_PARAMETER One or more parameters are invalid.
   @retval EFI_UNSUPPORTED       One or more options in the Token.OptionList are in
                                 the unsupported list of structure EFI_MTFTP4_MODE_DATA.
   @retval EFI_NOT_STARTED       The EFI MTFTPv4 Protocol driver has not been started.
   @retval EFI_NO_MAPPING        When using a default address, configuration (DHCP, BOOTP,
                                 RARP, etc.) is not finished yet.
   @retval EFI_ALREADY_STARTED   This Token is already being used in another MTFTPv4 session.
   @retval EFI_OUT_OF_RESOURCES  Required system resources could not be allocated.
   @retval EFI_ACCESS_DENIED     The previous operation has not completed yet.
   @retval EFI_DEVICE_ERROR      An unexpected network error or system error occurred.

 **/
 typedef
 EFI_STATUS
 (EFIAPI *EFI_MTFTP4_READ_DIRECTORY)(
   IN EFI_MTFTP4_PROTOCOL       *This,
   IN EFI_MTFTP4_TOKEN          *Token
   );

 /**
   Polls for incoming data packets and processes outgoing data packets.

   @param  This The pointer to the EFI_MTFTP4_PROTOCOL instance.

   @retval  EFI_SUCCESS           Incoming or outgoing data was processed.
   @retval  EFI_NOT_STARTED       This EFI MTFTPv4 Protocol instance has not been started.
   @retval  EFI_NO_MAPPING        When using a default address, configuration (DHCP, BOOTP,
                                  RARP, etc.) is not finished yet.
   @retval  EFI_INVALID_PARAMETER This is NULL.
   @retval  EFI_DEVICE_ERROR      An unexpected system or network error occurred.
   @retval  EFI_TIMEOUT           Data was dropped out of the transmit and/or receive queue.
                                  Consider increasing the polling rate.

 **/
 typedef
 EFI_STATUS
 (EFIAPI *EFI_MTFTP4_POLL)(
   IN EFI_MTFTP4_PROTOCOL       *This
   );

 ///
 /// The EFI_MTFTP4_PROTOCOL is designed to be used by UEFI drivers and applications
 /// to transmit and receive data files. The EFI MTFTPv4 Protocol driver uses
 /// the underlying EFI UDPv4 Protocol driver and EFI IPv4 Protocol driver.
 ///
 struct _EFI_MTFTP4_PROTOCOL {
   EFI_MTFTP4_GET_MODE_DATA     GetModeData;
   EFI_MTFTP4_CONFIGURE         Configure;
   EFI_MTFTP4_GET_INFO          GetInfo;
   EFI_MTFTP4_PARSE_OPTIONS     ParseOptions;
   EFI_MTFTP4_READ_FILE         ReadFile;
   EFI_MTFTP4_WRITE_FILE        WriteFile;
   EFI_MTFTP4_READ_DIRECTORY    ReadDirectory;
   EFI_MTFTP4_POLL              Poll;
 };

 struct _EFI_MTFTP4_TOKEN {
   ///
   /// The status that is returned to the caller at the end of the operation
   /// to indicate whether this operation completed successfully.
   ///
   EFI_STATUS                     Status;
   ///
   /// The event that will be signaled when the operation completes. If
   /// set to NULL, the corresponding function will wait until the read or
   /// write operation finishes. The type of Event must be
   /// EVT_NOTIFY_SIGNAL. The Task Priority Level (TPL) of
   /// Event must be lower than or equal to TPL_CALLBACK.
   ///
   EFI_EVENT                      Event;
   ///
   /// If not NULL, the data that will be used to override the existing configure data.
   ///
   EFI_MTFTP4_OVERRIDE_DATA       *OverrideData;
   ///
   /// The pointer to the null-terminated ASCII file name string.
   ///
   UINT8                          *Filename;
   ///
   /// The pointer to the null-terminated ASCII mode string. If NULL, "octet" is used.
   ///
   UINT8                          *ModeStr;
   ///
   /// Number of option/value string pairs.
   ///
   UINT32                         OptionCount;
   ///
   /// The pointer to an array of option/value string pairs. Ignored if OptionCount is zero.
   ///
   EFI_MTFTP4_OPTION              *OptionList;
   ///
   /// The size of the data buffer.
   ///
   UINT64                         BufferSize;
   ///
   /// The pointer to the data buffer. Data that is downloaded from the
   /// MTFTPv4 server is stored here. Data that is uploaded to the
   /// MTFTPv4 server is read from here. Ignored if BufferSize is zero.
   ///
   VOID                           *Buffer;
   ///
   /// The pointer to the context that will be used by CheckPacket,
   /// TimeoutCallback and PacketNeeded.
   ///
   VOID                           *Context;
   ///
   /// The pointer to the callback function to check the contents of the received packet.
   ///
   EFI_MTFTP4_CHECK_PACKET        CheckPacket;
   ///
   /// The pointer to the function to be called when a timeout occurs.
   ///
   EFI_MTFTP4_TIMEOUT_CALLBACK    TimeoutCallback;
   ///
   /// The pointer to the function to provide the needed packet contents.
   ///
   EFI_MTFTP4_PACKET_NEEDED       PacketNeeded;
 };

 extern EFI_GUID  gEfiMtftp4ServiceBindingProtocolGuid;
 extern EFI_GUID  gEfiMtftp4ProtocolGuid;

 #endif
	/** @file
	EFI Multicast Trivial File Transfer Protocol Definition

	Copyright (c) 2006 - 2018, Intel Corporation. All rights reserved.<BR>
	SPDX-License-Identifier: BSD-2-Clause-Patent

	@par Revision Reference:
	This Protocol is introduced in UEFI Specification 2.0

	**/

	#ifndef __EFI_MTFTP4_PROTOCOL_H__
	#define __EFI_MTFTP4_PROTOCOL_H__

	#define EFI_MTFTP4_SERVICE_BINDING_PROTOCOL_GUID \
	{ \
	0x2FE800BE, 0x8F01, 0x4aa6, {0x94, 0x6B, 0xD7, 0x13, 0x88, 0xE1, 0x83, 0x3F } \
	}

	#define EFI_MTFTP4_PROTOCOL_GUID \
	{ \
	0x78247c57, 0x63db, 0x4708, {0x99, 0xc2, 0xa8, 0xb4, 0xa9, 0xa6, 0x1f, 0x6b } \
	}

	typedef struct _EFI_MTFTP4_PROTOCOL EFI_MTFTP4_PROTOCOL;
	typedef struct _EFI_MTFTP4_TOKEN EFI_MTFTP4_TOKEN;

	//
	// MTFTP4 packet opcode definition
	//
	#define EFI_MTFTP4_OPCODE_RRQ 1
	#define EFI_MTFTP4_OPCODE_WRQ 2
	#define EFI_MTFTP4_OPCODE_DATA 3
	#define EFI_MTFTP4_OPCODE_ACK 4
	#define EFI_MTFTP4_OPCODE_ERROR 5
	#define EFI_MTFTP4_OPCODE_OACK 6
	#define EFI_MTFTP4_OPCODE_DIR 7
	#define EFI_MTFTP4_OPCODE_DATA8 8
	#define EFI_MTFTP4_OPCODE_ACK8 9

	//
	// MTFTP4 error code definition
	//
	#define EFI_MTFTP4_ERRORCODE_NOT_DEFINED 0
	#define EFI_MTFTP4_ERRORCODE_FILE_NOT_FOUND 1
	#define EFI_MTFTP4_ERRORCODE_ACCESS_VIOLATION 2
	#define EFI_MTFTP4_ERRORCODE_DISK_FULL 3
	#define EFI_MTFTP4_ERRORCODE_ILLEGAL_OPERATION 4
	#define EFI_MTFTP4_ERRORCODE_UNKNOWN_TRANSFER_ID 5
	#define EFI_MTFTP4_ERRORCODE_FILE_ALREADY_EXISTS 6
	#define EFI_MTFTP4_ERRORCODE_NO_SUCH_USER 7
	#define EFI_MTFTP4_ERRORCODE_REQUEST_DENIED 8

	//
	// MTFTP4 pacekt definitions
	//
	#pragma pack(1)

	typedef struct {
	UINT16 OpCode;
	UINT8 Filename[1];
	} EFI_MTFTP4_REQ_HEADER;

	typedef struct {
	UINT16 OpCode;
	UINT8 Data[1];
	} EFI_MTFTP4_OACK_HEADER;

	typedef struct {
	UINT16 OpCode;
	UINT16 Block;
	UINT8 Data[1];
	} EFI_MTFTP4_DATA_HEADER;

	typedef struct {
	UINT16 OpCode;
	UINT16 Block[1];
	} EFI_MTFTP4_ACK_HEADER;

	typedef struct {
	UINT16 OpCode;
	UINT64 Block;
	UINT8 Data[1];
	} EFI_MTFTP4_DATA8_HEADER;

	typedef struct {
	UINT16 OpCode;
	UINT64 Block[1];
	} EFI_MTFTP4_ACK8_HEADER;

	typedef struct {
	UINT16 OpCode;
	UINT16 ErrorCode;
	UINT8 ErrorMessage[1];
	} EFI_MTFTP4_ERROR_HEADER;

	typedef union {
	///
	/// Type of packets as defined by the MTFTPv4 packet opcodes.
	///
	UINT16 OpCode;
	///
	/// Read request packet header.
	///
	EFI_MTFTP4_REQ_HEADER Rrq;
	///
	/// Write request packet header.
	///
	EFI_MTFTP4_REQ_HEADER Wrq;
	///
	/// Option acknowledge packet header.
	///
	EFI_MTFTP4_OACK_HEADER Oack;
	///
	/// Data packet header.
	///
	EFI_MTFTP4_DATA_HEADER Data;
	///
	/// Acknowledgement packet header.
	///
	EFI_MTFTP4_ACK_HEADER Ack;
	///
	/// Data packet header with big block number.
	///
	EFI_MTFTP4_DATA8_HEADER Data8;
	///
	/// Acknowledgement header with big block num.
	///
	EFI_MTFTP4_ACK8_HEADER Ack8;
	///
	/// Error packet header.
	///
	EFI_MTFTP4_ERROR_HEADER Error;
	} EFI_MTFTP4_PACKET;

	#pragma pack()

	///
	/// MTFTP4 option definition.
	///
	typedef struct {
	UINT8 *OptionStr;
	UINT8 *ValueStr;
	} EFI_MTFTP4_OPTION;

	typedef struct {
	BOOLEAN UseDefaultSetting;
	EFI_IPv4_ADDRESS StationIp;
	EFI_IPv4_ADDRESS SubnetMask;
	UINT16 LocalPort;
	EFI_IPv4_ADDRESS GatewayIp;
	EFI_IPv4_ADDRESS ServerIp;
	UINT16 InitialServerPort;
	UINT16 TryCount;
	UINT16 TimeoutValue;
	} EFI_MTFTP4_CONFIG_DATA;

	typedef struct {
	EFI_MTFTP4_CONFIG_DATA ConfigData;
	UINT8 SupportedOptionCount;
	UINT8 **SupportedOptoins;
	UINT8 UnsupportedOptionCount;
	UINT8 **UnsupportedOptoins;
	} EFI_MTFTP4_MODE_DATA;

	typedef struct {
	EFI_IPv4_ADDRESS GatewayIp;
	EFI_IPv4_ADDRESS ServerIp;
	UINT16 ServerPort;
	UINT16 TryCount;
	UINT16 TimeoutValue;
	} EFI_MTFTP4_OVERRIDE_DATA;

	//
	// Protocol interfaces definition
	//

	/**
	A callback function that is provided by the caller to intercept
	the EFI_MTFTP4_OPCODE_DATA or EFI_MTFTP4_OPCODE_DATA8 packets processed in the
	EFI_MTFTP4_PROTOCOL.ReadFile() function, and alternatively to intercept
	EFI_MTFTP4_OPCODE_OACK or EFI_MTFTP4_OPCODE_ERROR packets during a call to
	EFI_MTFTP4_PROTOCOL.ReadFile(), WriteFile() or ReadDirectory().

	@param This The pointer to the EFI_MTFTP4_PROTOCOL instance.
	@param Token The token that the caller provided in the
	EFI_MTFTP4_PROTOCOL.ReadFile(), WriteFile()
	or ReadDirectory() function.
	@param PacketLen Indicates the length of the packet.
	@param Packet The pointer to an MTFTPv4 packet.

	@retval EFI_SUCCESS The operation was successful.
	@retval Others Aborts the transfer process.

	**/
	typedef
	EFI_STATUS
	(EFIAPI *EFI_MTFTP4_CHECK_PACKET)(
	IN EFI_MTFTP4_PROTOCOL *This,
	IN EFI_MTFTP4_TOKEN *Token,
	IN UINT16 PacketLen,
	IN EFI_MTFTP4_PACKET *Paket
	);

	/**
	Timeout callback function.

	@param This The pointer to the EFI_MTFTP4_PROTOCOL instance.
	@param Token The token that is provided in the
	EFI_MTFTP4_PROTOCOL.ReadFile() or
	EFI_MTFTP4_PROTOCOL.WriteFile() or
	EFI_MTFTP4_PROTOCOL.ReadDirectory() functions
	by the caller.

	@retval EFI_SUCCESS The operation was successful.
	@retval Others Aborts download process.

	**/
	typedef
	EFI_STATUS
	(EFIAPI *EFI_MTFTP4_TIMEOUT_CALLBACK)(
	IN EFI_MTFTP4_PROTOCOL *This,
	IN EFI_MTFTP4_TOKEN *Token
	);

	/**
	A callback function that the caller provides to feed data to the
	EFI_MTFTP4_PROTOCOL.WriteFile() function.

	@param This The pointer to the EFI_MTFTP4_PROTOCOL instance.
	@param Token The token provided in the
	EFI_MTFTP4_PROTOCOL.WriteFile() by the caller.
	@param Length Indicates the length of the raw data wanted on input, and the
	length the data available on output.
	@param Buffer The pointer to the buffer where the data is stored.

	@retval EFI_SUCCESS The operation was successful.
	@retval Others Aborts session.

	**/
	typedef
	EFI_STATUS
	(EFIAPI *EFI_MTFTP4_PACKET_NEEDED)(
	IN EFI_MTFTP4_PROTOCOL *This,
	IN EFI_MTFTP4_TOKEN *Token,
	IN OUT UINT16 *Length,
	OUT VOID **Buffer
	);

	/**
	Submits an asynchronous interrupt transfer to an interrupt endpoint of a USB device.

	@param This The pointer to the EFI_MTFTP4_PROTOCOL instance.
	@param ModeData The pointer to storage for the EFI MTFTPv4 Protocol driver mode data.

	@retval EFI_SUCCESS The configuration data was successfully returned.
	@retval EFI_OUT_OF_RESOURCES The required mode data could not be allocated.
	@retval EFI_INVALID_PARAMETER This is NULL or ModeData is NULL.

	**/
	typedef
	EFI_STATUS
	(EFIAPI *EFI_MTFTP4_GET_MODE_DATA)(
	IN EFI_MTFTP4_PROTOCOL *This,
	OUT EFI_MTFTP4_MODE_DATA *ModeData
	);

	/**
	Initializes, changes, or resets the default operational setting for this
	EFI MTFTPv4 Protocol driver instance.

	@param This The pointer to the EFI_MTFTP4_PROTOCOL instance.
	@param MtftpConfigData The pointer to the configuration data structure.

	@retval EFI_SUCCESS The EFI MTFTPv4 Protocol driver was configured successfully.
	@retval EFI_INVALID_PARAMETER One or more parameters are invalid.
	@retval EFI_ACCESS_DENIED The EFI configuration could not be changed at this time because
	there is one MTFTP background operation in progress.
	@retval EFI_NO_MAPPING When using a default address, configuration (DHCP, BOOTP,
	RARP, etc.) has not finished yet.
	@retval EFI_UNSUPPORTED A configuration protocol (DHCP, BOOTP, RARP, etc.) could not
	be located when clients choose to use the default address
	settings.
	@retval EFI_OUT_OF_RESOURCES The EFI MTFTPv4 Protocol driver instance data could not be
	allocated.
	@retval EFI_DEVICE_ERROR An unexpected system or network error occurred. The EFI
	MTFTPv4 Protocol driver instance is not configured.

	**/
	typedef
	EFI_STATUS
	(EFIAPI *EFI_MTFTP4_CONFIGURE)(
	IN EFI_MTFTP4_PROTOCOL *This,
	IN EFI_MTFTP4_CONFIG_DATA *MtftpConfigData OPTIONAL
	);

	/**
	Gets information about a file from an MTFTPv4 server.

	@param This The pointer to the EFI_MTFTP4_PROTOCOL instance.
	@param OverrideData Data that is used to override the existing parameters. If NULL,
	the default parameters that were set in the
	EFI_MTFTP4_PROTOCOL.Configure() function are used.
	@param Filename The pointer to null-terminated ASCII file name string.
	@param ModeStr The pointer to null-terminated ASCII mode string. If NULL, "octet" will be used.
	@param OptionCount Number of option/value string pairs in OptionList.
	@param OptionList The pointer to array of option/value string pairs. Ignored if
	OptionCount is zero.
	@param PacketLength The number of bytes in the returned packet.
	@param Packet The pointer to the received packet. This buffer must be freed by
	the caller.

	@retval EFI_SUCCESS An MTFTPv4 OACK packet was received and is in the Packet.
	@retval EFI_INVALID_PARAMETER One or more of the following conditions is TRUE:
	- This is NULL.
	- Filename is NULL.
	- OptionCount is not zero and OptionList is NULL.
	- One or more options in OptionList have wrong format.
	- PacketLength is NULL.
	- One or more IPv4 addresses in OverrideData are not valid
	unicast IPv4 addresses if OverrideData is not NULL.
	@retval EFI_UNSUPPORTED One or more options in the OptionList are in the
	unsupported list of structure EFI_MTFTP4_MODE_DATA.
	@retval EFI_NOT_STARTED The EFI MTFTPv4 Protocol driver has not been started.
	@retval EFI_NO_MAPPING When using a default address, configuration (DHCP, BOOTP,
	RARP, etc.) has not finished yet.
	@retval EFI_ACCESS_DENIED The previous operation has not completed yet.
	@retval EFI_OUT_OF_RESOURCES Required system resources could not be allocated.
	@retval EFI_TFTP_ERROR An MTFTPv4 ERROR packet was received and is in the Packet.
	@retval EFI_NETWORK_UNREACHABLE An ICMP network unreachable error packet was received and the Packet is set to NULL.
	@retval EFI_HOST_UNREACHABLE An ICMP host unreachable error packet was received and the Packet is set to NULL.
	@retval EFI_PROTOCOL_UNREACHABLE An ICMP protocol unreachable error packet was received and the Packet is set to NULL.
	@retval EFI_PORT_UNREACHABLE An ICMP port unreachable error packet was received and the Packet is set to NULL.
	@retval EFI_ICMP_ERROR Some other ICMP ERROR packet was received and is in the Buffer.
	@retval EFI_PROTOCOL_ERROR An unexpected MTFTPv4 packet was received and is in the Packet.
	@retval EFI_TIMEOUT No responses were received from the MTFTPv4 server.
	@retval EFI_DEVICE_ERROR An unexpected network error or system error occurred.
	@retval EFI_NO_MEDIA There was a media error.

	**/
	typedef
	EFI_STATUS
	(EFIAPI *EFI_MTFTP4_GET_INFO)(
	IN EFI_MTFTP4_PROTOCOL *This,
	IN EFI_MTFTP4_OVERRIDE_DATA *OverrideData OPTIONAL,
	IN UINT8 *Filename,
	IN UINT8 *ModeStr OPTIONAL,
	IN UINT8 OptionCount,
	IN EFI_MTFTP4_OPTION *OptionList,
	OUT UINT32 *PacketLength,
	OUT EFI_MTFTP4_PACKET **Packet OPTIONAL
	);

	/**
	Parses the options in an MTFTPv4 OACK packet.

	@param This The pointer to the EFI_MTFTP4_PROTOCOL instance.
	@param PacketLen Length of the OACK packet to be parsed.
	@param Packet The pointer to the OACK packet to be parsed.
	@param OptionCount The pointer to the number of options in following OptionList.
	@param OptionList The pointer to EFI_MTFTP4_OPTION storage. Call the EFI Boot
	Service FreePool() to release the OptionList if the options
	in this OptionList are not needed any more.

	@retval EFI_SUCCESS The OACK packet was valid and the OptionCount and
	OptionList parameters have been updated.
	@retval EFI_INVALID_PARAMETER One or more of the following conditions is TRUE:
	- PacketLen is 0.
	- Packet is NULL or Packet is not a valid MTFTPv4 packet.
	- OptionCount is NULL.
	@retval EFI_NOT_FOUND No options were found in the OACK packet.
	@retval EFI_OUT_OF_RESOURCES Storage for the OptionList array cannot be allocated.
	@retval EFI_PROTOCOL_ERROR One or more of the option fields is invalid.

	**/
	typedef
	EFI_STATUS
	(EFIAPI *EFI_MTFTP4_PARSE_OPTIONS)(
	IN EFI_MTFTP4_PROTOCOL *This,
	IN UINT32 PacketLen,
	IN EFI_MTFTP4_PACKET *Packet,
	OUT UINT32 *OptionCount,
	OUT EFI_MTFTP4_OPTION **OptionList OPTIONAL
	);

	/**
	Downloads a file from an MTFTPv4 server.

	@param This The pointer to the EFI_MTFTP4_PROTOCOL instance.
	@param Token The pointer to the token structure to provide the parameters that are
	used in this operation.

	@retval EFI_SUCCESS The data file has been transferred successfully.
	@retval EFI_OUT_OF_RESOURCES Required system resources could not be allocated.
	@retval EFI_BUFFER_TOO_SMALL BufferSize is not zero but not large enough to hold the
	downloaded data in downloading process.
	@retval EFI_ABORTED Current operation is aborted by user.
	@retval EFI_NETWORK_UNREACHABLE An ICMP network unreachable error packet was received.
	@retval EFI_HOST_UNREACHABLE An ICMP host unreachable error packet was received.
	@retval EFI_PROTOCOL_UNREACHABLE An ICMP protocol unreachable error packet was received.
	@retval EFI_PORT_UNREACHABLE An ICMP port unreachable error packet was received.
	@retval EFI_ICMP_ERROR Some other ICMP ERROR packet was received.
	@retval EFI_TIMEOUT No responses were received from the MTFTPv4 server.
	@retval EFI_TFTP_ERROR An MTFTPv4 ERROR packet was received.
	@retval EFI_DEVICE_ERROR An unexpected network error or system error occurred.
	@retval EFI_NO_MEDIA There was a media error.

	**/
	typedef
	EFI_STATUS
	(EFIAPI *EFI_MTFTP4_READ_FILE)(
	IN EFI_MTFTP4_PROTOCOL *This,
	IN EFI_MTFTP4_TOKEN *Token
	);

	/**
	Sends a file to an MTFTPv4 server.

	@param This The pointer to the EFI_MTFTP4_PROTOCOL instance.
	@param Token The pointer to the token structure to provide the parameters that are
	used in this operation.

	@retval EFI_SUCCESS The upload session has started.
	@retval EFI_UNSUPPORTED The operation is not supported by this implementation.
	@retval EFI_INVALID_PARAMETER One or more parameters are invalid.
	@retval EFI_UNSUPPORTED One or more options in the Token.OptionList are in
	the unsupported list of structure EFI_MTFTP4_MODE_DATA.
	@retval EFI_NOT_STARTED The EFI MTFTPv4 Protocol driver has not been started.
	@retval EFI_NO_MAPPING When using a default address, configuration (DHCP, BOOTP,
	RARP, etc.) is not finished yet.
	@retval EFI_ALREADY_STARTED This Token is already being used in another MTFTPv4 session.
	@retval EFI_OUT_OF_RESOURCES Required system resources could not be allocated.
	@retval EFI_ACCESS_DENIED The previous operation has not completed yet.
	@retval EFI_DEVICE_ERROR An unexpected network error or system error occurred.

	**/
	typedef
	EFI_STATUS
	(EFIAPI *EFI_MTFTP4_WRITE_FILE)(
	IN EFI_MTFTP4_PROTOCOL *This,
	IN EFI_MTFTP4_TOKEN *Token
	);

	/**
	Downloads a data file "directory" from an MTFTPv4 server. May be unsupported in some EFI
	implementations.

	@param This The pointer to the EFI_MTFTP4_PROTOCOL instance.
	@param Token The pointer to the token structure to provide the parameters that are
	used in this operation.

	@retval EFI_SUCCESS The MTFTPv4 related file "directory" has been downloaded.
	@retval EFI_UNSUPPORTED The operation is not supported by this implementation.
	@retval EFI_INVALID_PARAMETER One or more parameters are invalid.
	@retval EFI_UNSUPPORTED One or more options in the Token.OptionList are in
	the unsupported list of structure EFI_MTFTP4_MODE_DATA.
	@retval EFI_NOT_STARTED The EFI MTFTPv4 Protocol driver has not been started.
	@retval EFI_NO_MAPPING When using a default address, configuration (DHCP, BOOTP,
	RARP, etc.) is not finished yet.
	@retval EFI_ALREADY_STARTED This Token is already being used in another MTFTPv4 session.
	@retval EFI_OUT_OF_RESOURCES Required system resources could not be allocated.
	@retval EFI_ACCESS_DENIED The previous operation has not completed yet.
	@retval EFI_DEVICE_ERROR An unexpected network error or system error occurred.

	**/
	typedef
	EFI_STATUS
	(EFIAPI *EFI_MTFTP4_READ_DIRECTORY)(
	IN EFI_MTFTP4_PROTOCOL *This,
	IN EFI_MTFTP4_TOKEN *Token
	);

	/**
	Polls for incoming data packets and processes outgoing data packets.

	@param This The pointer to the EFI_MTFTP4_PROTOCOL instance.

	@retval EFI_SUCCESS Incoming or outgoing data was processed.
	@retval EFI_NOT_STARTED This EFI MTFTPv4 Protocol instance has not been started.
	@retval EFI_NO_MAPPING When using a default address, configuration (DHCP, BOOTP,
	RARP, etc.) is not finished yet.
	@retval EFI_INVALID_PARAMETER This is NULL.
	@retval EFI_DEVICE_ERROR An unexpected system or network error occurred.
	@retval EFI_TIMEOUT Data was dropped out of the transmit and/or receive queue.
	Consider increasing the polling rate.

	**/
	typedef
	EFI_STATUS
	(EFIAPI *EFI_MTFTP4_POLL)(
	IN EFI_MTFTP4_PROTOCOL *This
	);

	///
	/// The EFI_MTFTP4_PROTOCOL is designed to be used by UEFI drivers and applications
	/// to transmit and receive data files. The EFI MTFTPv4 Protocol driver uses
	/// the underlying EFI UDPv4 Protocol driver and EFI IPv4 Protocol driver.
	///
	struct _EFI_MTFTP4_PROTOCOL {
	EFI_MTFTP4_GET_MODE_DATA GetModeData;
	EFI_MTFTP4_CONFIGURE Configure;
	EFI_MTFTP4_GET_INFO GetInfo;
	EFI_MTFTP4_PARSE_OPTIONS ParseOptions;
	EFI_MTFTP4_READ_FILE ReadFile;
	EFI_MTFTP4_WRITE_FILE WriteFile;
	EFI_MTFTP4_READ_DIRECTORY ReadDirectory;
	EFI_MTFTP4_POLL Poll;
	};

	struct _EFI_MTFTP4_TOKEN {
	///
	/// The status that is returned to the caller at the end of the operation
	/// to indicate whether this operation completed successfully.
	///
	EFI_STATUS Status;
	///
	/// The event that will be signaled when the operation completes. If
	/// set to NULL, the corresponding function will wait until the read or
	/// write operation finishes. The type of Event must be
	/// EVT_NOTIFY_SIGNAL. The Task Priority Level (TPL) of
	/// Event must be lower than or equal to TPL_CALLBACK.
	///
	EFI_EVENT Event;
	///
	/// If not NULL, the data that will be used to override the existing configure data.
	///
	EFI_MTFTP4_OVERRIDE_DATA *OverrideData;
	///
	/// The pointer to the null-terminated ASCII file name string.
	///
	UINT8 *Filename;
	///
	/// The pointer to the null-terminated ASCII mode string. If NULL, "octet" is used.
	///
	UINT8 *ModeStr;
	///
	/// Number of option/value string pairs.
	///
	UINT32 OptionCount;
	///
	/// The pointer to an array of option/value string pairs. Ignored if OptionCount is zero.
	///
	EFI_MTFTP4_OPTION *OptionList;
	///
	/// The size of the data buffer.
	///
	UINT64 BufferSize;
	///
	/// The pointer to the data buffer. Data that is downloaded from the
	/// MTFTPv4 server is stored here. Data that is uploaded to the
	/// MTFTPv4 server is read from here. Ignored if BufferSize is zero.
	///
	VOID *Buffer;
	///
	/// The pointer to the context that will be used by CheckPacket,
	/// TimeoutCallback and PacketNeeded.
	///
	VOID *Context;
	///
	/// The pointer to the callback function to check the contents of the received packet.
	///
	EFI_MTFTP4_CHECK_PACKET CheckPacket;
	///
	/// The pointer to the function to be called when a timeout occurs.
	///
	EFI_MTFTP4_TIMEOUT_CALLBACK TimeoutCallback;
	///
	/// The pointer to the function to provide the needed packet contents.
	///
	EFI_MTFTP4_PACKET_NEEDED PacketNeeded;
	};

	extern EFI_GUID gEfiMtftp4ServiceBindingProtocolGuid;
	extern EFI_GUID gEfiMtftp4ProtocolGuid;

	#endif