[mirror_edk2.git] / MdePkg / Include / Protocol / Mtftp4.h

/** @file\r
  EFI Multicast Trivial File Tranfer Protocol Definition\r
\r
  Copyright (c) 2006 - 2008, Intel Corporation                                                         \r
  All rights reserved. This program and the accompanying materials                          \r
  are licensed and made available under the terms and conditions of the BSD License         \r
  which accompanies this distribution.  The full text of the license may be found at        \r
  http://opensource.org/licenses/bsd-license.php                                            \r
\r
  THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,                     \r
  WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.             \r
\r
**/\r
\r
#ifndef __EFI_MTFTP4_PROTOCOL_H__\r
#define __EFI_MTFTP4_PROTOCOL_H__\r
\r
#define EFI_MTFTP4_SERVICE_BINDING_PROTOCOL_GUID \\r
  { \\r
    0x2FE800BE, 0x8F01, 0x4aa6, {0x94, 0x6B, 0xD7, 0x13, 0x88, 0xE1, 0x83, 0x3F } \\r
  }\r
\r
#define EFI_MTFTP4_PROTOCOL_GUID \\r
  { \\r
    0x78247c57, 0x63db, 0x4708, {0x99, 0xc2, 0xa8, 0xb4, 0xa9, 0xa6, 0x1f, 0x6b } \\r
  }\r
\r
typedef struct _EFI_MTFTP4_PROTOCOL EFI_MTFTP4_PROTOCOL;\r
typedef struct _EFI_MTFTP4_TOKEN EFI_MTFTP4_TOKEN;\r
\r
//\r
//MTFTP4 packet opcode definition\r
//\r
#define EFI_MTFTP4_OPCODE_RRQ                     1\r
#define EFI_MTFTP4_OPCODE_WRQ                     2\r
#define EFI_MTFTP4_OPCODE_DATA                    3\r
#define EFI_MTFTP4_OPCODE_ACK                     4\r
#define EFI_MTFTP4_OPCODE_ERROR                   5\r
#define EFI_MTFTP4_OPCODE_OACK                    6\r
#define EFI_MTFTP4_OPCODE_DIR                     7\r
#define EFI_MTFTP4_OPCODE_DATA8                   8\r
#define EFI_MTFTP4_OPCODE_ACK8                    9\r
\r
//\r
// MTFTP4 error code definition\r
//\r
#define EFI_MTFTP4_ERRORCODE_NOT_DEFINED          0\r
#define EFI_MTFTP4_ERRORCODE_FILE_NOT_FOUND       1\r
#define EFI_MTFTP4_ERRORCODE_ACCESS_VIOLATION     2\r
#define EFI_MTFTP4_ERRORCODE_DISK_FULL            3\r
#define EFI_MTFTP4_ERRORCODE_ILLEGAL_OPERATION    4\r
#define EFI_MTFTP4_ERRORCODE_UNKNOWN_TRANSFER_ID  5\r
#define EFI_MTFTP4_ERRORCODE_FILE_ALREADY_EXISTS  6\r
#define EFI_MTFTP4_ERRORCODE_NO_SUCH_USER         7\r
#define EFI_MTFTP4_ERRORCODE_REQUEST_DENIED       8\r
\r
//\r
// MTFTP4 pacekt definitions\r
//\r
#pragma pack(1)\r
\r
typedef struct {\r
  UINT16                  OpCode;\r
  UINT8                   Filename[1];\r
} EFI_MTFTP4_REQ_HEADER;\r
\r
typedef struct {\r
  UINT16                  OpCode;\r
  UINT8                   Data[1];\r
} EFI_MTFTP4_OACK_HEADER;\r
\r
typedef struct {\r
  UINT16                  OpCode;\r
  UINT16                  Block;\r
  UINT8                   Data[1];\r
} EFI_MTFTP4_DATA_HEADER;\r
\r
typedef struct {\r
  UINT16                  OpCode;\r
  UINT16                  Block[1];\r
} EFI_MTFTP4_ACK_HEADER;\r
\r
typedef struct {\r
  UINT16                  OpCode;\r
  UINT64                  Block;\r
  UINT8                   Data[1];\r
} EFI_MTFTP4_DATA8_HEADER;\r
\r
typedef struct {\r
  UINT16                  OpCode;\r
  UINT64                  Block[1];\r
} EFI_MTFTP4_ACK8_HEADER;\r
\r
typedef struct {\r
  UINT16                  OpCode;\r
  UINT16                  ErrorCode;\r
  UINT8                   ErrorMessage[1];\r
} EFI_MTFTP4_ERROR_HEADER;\r
\r
typedef union {\r
  ///\r
  /// Type of packets as defined by the MTFTPv4 packet opcodes.\r
  ///\r
  UINT16                  OpCode;\r
  ///\r
  /// Read request packet header.\r
  ///\r
  EFI_MTFTP4_REQ_HEADER   Rrq;\r
  ///\r
  /// Write request packet header.\r
  ///\r
  EFI_MTFTP4_REQ_HEADER   Wrq;\r
  ///\r
  /// Option acknowledge packet header.\r
  ///\r
  EFI_MTFTP4_OACK_HEADER  Oack;\r
  ///\r
  /// Data packet header.\r
  ///\r
  EFI_MTFTP4_DATA_HEADER  Data;\r
  ///\r
  /// Acknowledgement packet header.\r
  ///\r
  EFI_MTFTP4_ACK_HEADER   Ack;\r
  ///\r
  /// Data packet header with big block number.\r
  ///\r
  EFI_MTFTP4_DATA8_HEADER Data8;\r
  ///\r
  /// Acknowledgement header with big block num.\r
  ///\r
  EFI_MTFTP4_ACK8_HEADER  Ack8;\r
  ///\r
  /// Error packet header.\r
  ///\r
  EFI_MTFTP4_ERROR_HEADER Error;\r
} EFI_MTFTP4_PACKET;\r
\r
#pragma pack()\r
\r
///\r
/// MTFTP4 option definition\r
///\r
typedef struct {\r
  UINT8                   *OptionStr;\r
  UINT8                   *ValueStr;\r
} EFI_MTFTP4_OPTION;\r
\r
\r
typedef struct {\r
  BOOLEAN                 UseDefaultSetting;\r
  EFI_IPv4_ADDRESS        StationIp;\r
  EFI_IPv4_ADDRESS        SubnetMask;\r
  UINT16                  LocalPort;\r
  EFI_IPv4_ADDRESS        GatewayIp;\r
  EFI_IPv4_ADDRESS        ServerIp;\r
  UINT16                  InitialServerPort;\r
  UINT16                  TryCount;\r
  UINT16                  TimeoutValue;\r
} EFI_MTFTP4_CONFIG_DATA;\r
\r
\r
typedef struct {\r
  EFI_MTFTP4_CONFIG_DATA  ConfigData;\r
  UINT8                   SupportedOptionCount;  \r
  UINT8                   **SupportedOptoins;\r
  UINT8                   UnsupportedOptionCount;  \r
  UINT8                   **UnsupportedOptoins;\r
} EFI_MTFTP4_MODE_DATA;\r
\r
\r
typedef struct {\r
  EFI_IPv4_ADDRESS        GatewayIp;\r
  EFI_IPv4_ADDRESS        ServerIp;\r
  UINT16                  ServerPort;\r
  UINT16                  TryCount;\r
  UINT16                  TimeoutValue;\r
} EFI_MTFTP4_OVERRIDE_DATA;\r
\r
//\r
// Protocol interfaces definition\r
//\r
\r
/**\r
  A callback function that is provided by the caller to intercept               \r
  the EFI_MTFTP4_OPCODE_DATA or EFI_MTFTP4_OPCODE_DATA8 packets processed in the\r
  EFI_MTFTP4_PROTOCOL.ReadFile() function, and alternatively to intercept       \r
  EFI_MTFTP4_OPCODE_OACK or EFI_MTFTP4_OPCODE_ERROR packets during a call to    \r
  EFI_MTFTP4_PROTOCOL.ReadFile(), WriteFile() or ReadDirectory().                   \r
\r
  @param  This        Pointer to the EFI_MTFTP4_PROTOCOL instance.\r
  @param  Token       The token that the caller provided in the\r
                      EFI_MTFTP4_PROTOCOL.ReadFile(), WriteFile()\r
                      or ReadDirectory() function.\r
  @param  PacketLen   Indicates the length of the packet.\r
  @param  Packet      Pointer to an MTFTPv4 packet.\r
\r
  @retval EFI_SUCCESS Operation sucess\r
  @retval Others      Abort transfer process\r
\r
**/\r
typedef \r
EFI_STATUS \r
(EFIAPI *EFI_MTFTP4_CHECK_PACKET)( \r
  IN EFI_MTFTP4_PROTOCOL  *This,\r
  IN EFI_MTFTP4_TOKEN     *Token,\r
  IN UINT16               PacketLen,\r
  IN EFI_MTFTP4_PACKET    *Paket\r
  );\r
\r
/**\r
  Timeout callback funtion.            \r
\r
  @param  This           Pointer to the EFI_MTFTP4_PROTOCOL instance.\r
  @param  Token          The token that is provided in the\r
                         EFI_MTFTP4_PROTOCOL.ReadFile() or\r
                         EFI_MTFTP4_PROTOCOL.WriteFile() or\r
                         EFI_MTFTP4_PROTOCOL.ReadDirectory() functions\r
                         by the caller.\r
                         \r
  @retval EFI_SUCCESS   Operation sucess\r
  @retval Others        Aborts download process.\r
\r
**/\r
typedef \r
EFI_STATUS \r
(EFIAPI *EFI_MTFTP4_TIMEOUT_CALLBACK)( \r
  IN EFI_MTFTP4_PROTOCOL  *This,\r
  IN EFI_MTFTP4_TOKEN     *Token\r
  );\r
\r
/**\r
  A callback function that the caller provides to feed data to the\r
  EFI_MTFTP4_PROTOCOL.WriteFile() function.\r
\r
  @param  This   Pointer to the EFI_MTFTP4_PROTOCOL instance.\r
  @param  Token  The token provided in the\r
                 EFI_MTFTP4_PROTOCOL.WriteFile() by the caller.\r
  @param  Length Indicates the length of the raw data wanted on input, and the\r
                 length the data available on output.\r
  @param  Buffer Pointer to the buffer where the data is stored.\r
\r
  @retval EFI_SUCCESS Operation sucess\r
  @retval Others      Aborts session.\r
\r
**/\r
typedef \r
EFI_STATUS \r
(EFIAPI *EFI_MTFTP4_PACKET_NEEDED)( \r
  IN  EFI_MTFTP4_PROTOCOL *This,\r
  IN  EFI_MTFTP4_TOKEN    *Token,\r
  IN  OUT UINT16          *Length,\r
  OUT VOID                **Buffer\r
  );\r
\r
\r
/**\r
  Submits an asynchronous interrupt transfer to an interrupt endpoint of a USB device.\r
\r
  @param  This     Pointer to the EFI_MTFTP4_PROTOCOL instance.\r
  @param  ModeData Pointer to storage for the EFI MTFTPv4 Protocol driver mode data.\r
\r
  @retval EFI_SUCCESS           The configuration data was successfully returned.\r
  @retval EFI_OUT_OF_RESOURCES  The required mode data could not be allocated.\r
  @retval EFI_INVALID_PARAMETER This is NULL or ModeData is NULL.\r
\r
**/\r
typedef \r
EFI_STATUS \r
(EFIAPI *EFI_MTFTP4_GET_MODE_DATA)(\r
  IN  EFI_MTFTP4_PROTOCOL     *This,\r
  OUT EFI_MTFTP4_MODE_DATA    *ModeData\r
  );\r
\r
\r
/**\r
  Initializes, changes, or resets the default operational setting for this \r
  EFI MTFTPv4 Protocol driver instance.\r
\r
  @param  This            Pointer to the EFI_MTFTP4_PROTOCOL instance.\r
  @param  MtftpConfigData Pointer to the configuration data structure.\r
\r
  @retval EFI_SUCCESS           The EFI MTFTPv4 Protocol driver was configured successfully.\r
  @retval EFI_INVALID_PARAMETER One or more parameters are invalid.\r
  @retval EFI_ACCESS_DENIED     The EFI configuration could not be changed at this time because\r
                                there is one MTFTP background operation in progress.\r
  @retval EFI_NO_MAPPING        When using a default address, configuration (DHCP, BOOTP,\r
                                RARP, etc.) has not finished yet.\r
  @retval EFI_UNSUPPORTED       A configuration protocol (DHCP, BOOTP, RARP, etc.) could not\r
                                be located when clients choose to use the default address\r
                                settings.\r
  @retval EFI_OUT_OF_RESOURCES  The EFI MTFTPv4 Protocol driver instance data could not be\r
                                allocated.\r
  @retval EFI_DEVICE_ERROR      An unexpected system or network error occurred. The EFI\r
                                 MTFTPv4 Protocol driver instance is not configured.\r
\r
**/\r
typedef \r
EFI_STATUS \r
(EFIAPI *EFI_MTFTP4_CONFIGURE)(\r
  IN EFI_MTFTP4_PROTOCOL       *This,\r
  IN EFI_MTFTP4_CONFIG_DATA    *MtftpConfigData OPTIONAL\r
  );   \r
    \r
    \r
/**\r
  Gets information about a file from an MTFTPv4 server.\r
\r
  @param  This         Pointer to the EFI_MTFTP4_PROTOCOL instance.\r
  @param  OverrideData Data that is used to override the existing parameters. If NULL,\r
                       the default parameters that were set in the\r
                       EFI_MTFTP4_PROTOCOL.Configure() function are used.\r
  @param  Filename     Pointer to ASCIIZ file name string.\r
  @param  ModeStr      Pointer to ASCIIZ mode string. If NULL, "octet" will be used.\r
  @param  OptionCount  Number of option/value string pairs in OptionList.\r
  @param  OptionList   Pointer to array of option/value string pairs. Ignored if\r
                       OptionCount is zero.\r
  @param  PacketLength The number of bytes in the returned packet.\r
  @param  Packet       The pointer to the received packet. This buffer must be freed by\r
                       the caller.\r
\r
  @retval EFI_SUCCESS           An MTFTPv4 OACK packet was received and is in the Buffer.\r
  @retval EFI_INVALID_PARAMETER One or more parameters are invalid.\r
  @retval EFI_UNSUPPORTED       One or more options in the OptionList are in the\r
                                unsupported list of structure EFI_MTFTP4_MODE_DATA.\r
  @retval EFI_NOT_STARTED       The EFI MTFTPv4 Protocol driver has not been started.\r
  @retval EFI_NO_MAPPING        When using a default address, configuration (DHCP, BOOTP,\r
                                RARP, etc.) has not finished yet.\r
  @retval EFI_ACCESS_DENIED     The previous operation has not completed yet.\r
  @retval EFI_OUT_OF_RESOURCES  Required system resources could not be allocated.\r
  @retval EFI_TFTP_ERROR        An MTFTPv4 ERROR packet was received and is in the buffer.\r
  @retval EFI_ICMP_ERROR        An ICMP ERROR packet was received and is in the Buffer.\r
  @retval EFI_PROTOCOL_ERROR    An unexpected MTFTPv4 packet was received and is in the buffer.\r
  @retval EFI_TIMEOUT           No responses were received from the MTFTPv4 server.\r
  @retval EFI_DEVICE_ERROR      An unexpected network error or system error occurred.\r
\r
**/\r
typedef \r
EFI_STATUS \r
(EFIAPI *EFI_MTFTP4_GET_INFO)(\r
  IN  EFI_MTFTP4_PROTOCOL      *This,\r
  IN  EFI_MTFTP4_OVERRIDE_DATA *OverrideData   OPTIONAL,\r
  IN  UINT8                    *Filename,\r
  IN  UINT8                    *ModeStr        OPTIONAL,\r
  IN  UINT8                    OptionCount,\r
  IN  EFI_MTFTP4_OPTION        *OptionList,\r
  OUT UINT32                   *PacketLength,\r
  OUT EFI_MTFTP4_PACKET        **Packet        OPTIONAL\r
  );\r
\r
/**\r
  Parses the options in an MTFTPv4 OACK packet.\r
\r
  @param  This         Pointer to the EFI_MTFTP4_PROTOCOL instance.\r
  @param  PacketLen    Length of the OACK packet to be parsed.\r
  @param  Packet       Pointer to the OACK packet to be parsed.\r
  @param  OptionCount  Pointer to the number of options in following OptionList.\r
  @param  OptionList   Pointer to EFI_MTFTP4_OPTION storage. Call the EFI Boot\r
                       Service FreePool() to release each option if they are not\r
                       needed any more.\r
\r
  @retval EFI_SUCCESS           The OACK packet was valid and the OptionCount and\r
                                OptionList parameters have been updated.\r
  @retval EFI_INVALID_PARAMETER One or more of the following conditions is TRUE:\r
                                - PacketLen is 0.\r
                                - Packet is NULL or Packet is not a valid MTFTPv4 packet.\r
                                - OptionCount is NULL.\r
  @retval EFI_NOT_FOUND         No options were found in the OACK packet.\r
  @retval EFI_OUT_OF_RESOURCES  Storage for the OptionList array cannot be allocated.\r
  @retval EFI_PROTOCOL_ERROR    One or more of the option fields is invalid.\r
\r
**/\r
typedef \r
EFI_STATUS \r
(EFIAPI *EFI_MTFTP4_PARSE_OPTIONS)(\r
  IN  EFI_MTFTP4_PROTOCOL      *This,\r
  IN  UINT32                   PacketLen,\r
  IN  EFI_MTFTP4_PACKET        *Packet,\r
  OUT UINT32                   *OptionCount,\r
  OUT EFI_MTFTP4_OPTION        **OptionList OPTIONAL\r
  );  \r
\r
\r
/**\r
  Downloads a file from an MTFTPv4 server.\r
\r
  @param  This  Pointer to the EFI_MTFTP4_PROTOCOL instance.\r
  @param  Token Pointer to the token structure to provide the parameters that are\r
                used in this operation.\r
\r
  @retval EFI_SUCCESS          The data file has been transferred successfully.\r
  @retval EFI_OUT_OF_RESOURCES Required system resources could not be allocated.\r
  @retval EFI_BUFFER_TOO_SMALL BufferSize is not large enough to hold the downloaded data\r
                               in downloading process.\r
  @retval EFI_ABORTED          Current operation is aborted by user.\r
  @retval EFI_ICMP_ERROR       An ICMP ERROR packet was received.\r
  @retval EFI_TIMEOUT          No responses were received from the MTFTPv4 server.\r
  @retval EFI_TFTP_ERROR       An MTFTPv4 ERROR packet was received.\r
  @retval EFI_DEVICE_ERROR     An unexpected network error or system error occurred.\r
\r
**/\r
typedef \r
EFI_STATUS \r
(EFIAPI *EFI_MTFTP4_READ_FILE)(\r
  IN EFI_MTFTP4_PROTOCOL       *This,\r
  IN EFI_MTFTP4_TOKEN          *Token\r
  );  \r
  \r
\r
\r
/**\r
  Sends a file to an MTFTPv4 server.\r
\r
  @param  This  Pointer to the EFI_MTFTP4_PROTOCOL instance.\r
  @param  Token Pointer to the token structure to provide the parameters that are\r
                used in this operation.\r
\r
  @retval EFI_SUCCESS           The upload session has started.\r
  @retval EFI_UNSUPPORTED       The operation is not supported by this implementation.\r
  @retval EFI_INVALID_PARAMETER One or more parameters are invalid.\r
  @retval EFI_UNSUPPORTED       One or more options in the Token.OptionList are in\r
                                the unsupported list of structure EFI_MTFTP4_MODE_DATA.\r
  @retval EFI_NOT_STARTED       The EFI MTFTPv4 Protocol driver has not been started.\r
  @retval EFI_NO_MAPPING        When using a default address, configuration (DHCP, BOOTP,\r
                                RARP, etc.) is not finished yet.\r
  @retval EFI_ALREADY_STARTED   This Token is already being used in another MTFTPv4 session.\r
  @retval EFI_OUT_OF_RESOURCES  Required system resources could not be allocated.\r
  @retval EFI_ACCESS_DENIED     The previous operation has not completed yet.\r
  @retval EFI_DEVICE_ERROR      An unexpected network error or system error occurred.\r
\r
**/\r
typedef \r
EFI_STATUS \r
(EFIAPI *EFI_MTFTP4_WRITE_FILE)(\r
  IN EFI_MTFTP4_PROTOCOL       *This,\r
  IN EFI_MTFTP4_TOKEN          *Token\r
  );  \r
  \r
\r
/**\r
  Downloads a data file "directory" from an MTFTPv4 server. May be unsupported in some EFI\r
  implementations.                                                                                                                                                                                 \r
\r
  @param  This  Pointer to the EFI_MTFTP4_PROTOCOL instance.\r
  @param  Token Pointer to the token structure to provide the parameters that are\r
                used in this operation.\r
\r
  @retval EFI_SUCCESS           The MTFTPv4 related file "directory" has been downloaded.\r
  @retval EFI_UNSUPPORTED       The operation is not supported by this implementation.\r
  @retval EFI_INVALID_PARAMETER One or more parameters are invalid.\r
  @retval EFI_UNSUPPORTED       One or more options in the Token.OptionList are in\r
                                the unsupported list of structure EFI_MTFTP4_MODE_DATA.\r
  @retval EFI_NOT_STARTED       The EFI MTFTPv4 Protocol driver has not been started.\r
  @retval EFI_NO_MAPPING        When using a default address, configuration (DHCP, BOOTP,\r
                                RARP, etc.) is not finished yet.\r
  @retval EFI_ALREADY_STARTED   This Token is already being used in another MTFTPv4 session.\r
  @retval EFI_OUT_OF_RESOURCES  Required system resources could not be allocated.\r
  @retval EFI_ACCESS_DENIED     The previous operation has not completed yet.\r
  @retval EFI_DEVICE_ERROR      An unexpected network error or system error occurred.\r
\r
**/\r
typedef \r
EFI_STATUS \r
(EFIAPI *EFI_MTFTP4_READ_DIRECTORY)(\r
  IN EFI_MTFTP4_PROTOCOL       *This,\r
  IN EFI_MTFTP4_TOKEN          *Token\r
  );    \r
\r
/**\r
  Polls for incoming data packets and processes outgoing data packets.\r
\r
  @param  This Pointer to the EFI_MTFTP4_PROTOCOL instance.\r
\r
  @retval  EFI_SUCCESS           Incoming or outgoing data was processed.\r
  @retval  EFI_NOT_STARTED       This EFI MTFTPv4 Protocol instance has not been started.\r
  @retval  EFI_NO_MAPPING        When using a default address, configuration (DHCP, BOOTP,\r
                                 RARP, etc.) is not finished yet.\r
  @retval  EFI_INVALID_PARAMETER This is NULL.\r
  @retval  EFI_DEVICE_ERROR      An unexpected system or network error occurred.\r
  @retval  EFI_TIMEOUT           Data was dropped out of the transmit and/or receive queue.\r
                                 Consider increasing the polling rate.\r
\r
**/\r
typedef\r
EFI_STATUS\r
(EFIAPI *EFI_MTFTP4_POLL)(\r
  IN EFI_MTFTP4_PROTOCOL       *This\r
  );                                                                                                                 \r
                                                                                                                  \r
///\r
/// The EFI_MTFTP4_PROTOCOL is designed to be used by UEFI drivers and applications \r
/// to transmit and receive data files. The EFI MTFTPv4 Protocol driver uses \r
/// the underlying EFI UDPv4 Protocol driver and EFI IPv4 Protocol driver.\r
///  \r
struct _EFI_MTFTP4_PROTOCOL {\r
  EFI_MTFTP4_GET_MODE_DATA     GetModeData;\r
  EFI_MTFTP4_CONFIGURE         Configure;\r
  EFI_MTFTP4_GET_INFO          GetInfo;\r
  EFI_MTFTP4_PARSE_OPTIONS     ParseOptions;\r
  EFI_MTFTP4_READ_FILE         ReadFile;\r
  EFI_MTFTP4_WRITE_FILE        WriteFile;\r
  EFI_MTFTP4_READ_DIRECTORY    ReadDirectory;\r
  EFI_MTFTP4_POLL              Poll;\r
};\r
\r
struct _EFI_MTFTP4_TOKEN {\r
  ///\r
  /// The status that is returned to the caller at the end of the operation\r
  /// to indicate whether this operation completed successfully.\r
  ///\r
  EFI_STATUS                  Status;\r
  ///\r
  /// The event that will be signaled when the operation completes. If\r
  /// set to NULL, the corresponding function will wait until the read or\r
  /// write operation finishes. The type of Event must be\r
  /// EVT_NOTIFY_SIGNAL. The Task Priority Level (TPL) of\r
  /// Event must be lower than or equal to TPL_CALLBACK.\r
  ///\r
  EFI_EVENT                   Event;\r
  ///\r
  /// If not NULL, the data that will be used to override the existing configure data.\r
  ///\r
  EFI_MTFTP4_OVERRIDE_DATA    *OverrideData;\r
  ///\r
  /// Pointer to the ASCIIZ file name string.\r
  ///\r
  UINT8                       *Filename;\r
  ///\r
  /// Pointer to the ASCIIZ mode string. If NULL, "octet" is used.\r
  ///\r
  UINT8                       *ModeStr;\r
  ///\r
  /// Number of option/value string pairs.\r
  ///\r
  UINT32                      OptionCount;\r
  ///\r
  /// Pointer to an array of option/value string pairs. Ignored if OptionCount is zero.\r
  ///\r
  EFI_MTFTP4_OPTION           *OptionList;\r
  ///\r
  /// Size of the data buffer.\r
  ///\r
  OUT UINT64                  BufferSize;\r
  ///\r
  /// Pointer to the data buffer. Data that is downloaded from the\r
  /// MTFTPv4 server is stored here. Data that is uploaded to the\r
  /// MTFTPv4 server is read from here. Ignored if BufferSize is zero.\r
  ///\r
  OUT VOID                    *Buffer;\r
  ///\r
  /// Pointer to the callback function to check the contents of the received packet.\r
  ///\r
  EFI_MTFTP4_CHECK_PACKET     CheckPacket;\r
  ///\r
  /// Pointer to the function to be called when a timeout occurs.\r
  ///\r
  EFI_MTFTP4_TIMEOUT_CALLBACK TimeoutCallback;\r
  ///\r
  /// Pointer to the function to provide the needed packet contents.\r
  ///\r
  EFI_MTFTP4_PACKET_NEEDED    PacketNeeded;\r
};\r
\r
extern EFI_GUID gEfiMtftp4ServiceBindingProtocolGuid;\r
extern EFI_GUID gEfiMtftp4ProtocolGuid;  \r
\r
#endif\r
\r