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+/** @file
+ EFI TCPv4(Transmission Control Protocol version 4) Protocol Definition
+ The EFI TCPv4 Service Binding Protocol is used to locate EFI TCPv4 Protocol drivers to create
+ and destroy child of the driver to communicate with other host using TCP protocol.
+ The EFI TCPv4 Protocol provides services to send and receive data stream.
+
+Copyright (c) 2006 - 2014, Intel Corporation. All rights reserved.<BR>
+This program and the accompanying materials are licensed and made available under
+the terms and conditions of the BSD License that accompanies this distribution.
+The full text of the license may be found at
+http://opensource.org/licenses/bsd-license.php.
+
+THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+
+ @par Revision Reference:
+ This Protocol is introduced in UEFI Specification 2.0.
+
+**/
+
+#ifndef __EFI_TCP4_PROTOCOL_H__
+#define __EFI_TCP4_PROTOCOL_H__
+
+#include <Protocol/Ip4.h>
+
+#define EFI_TCP4_SERVICE_BINDING_PROTOCOL_GUID \
+ { \
+ 0x00720665, 0x67EB, 0x4a99, {0xBA, 0xF7, 0xD3, 0xC3, 0x3A, 0x1C, 0x7C, 0xC9 } \
+ }
+
+#define EFI_TCP4_PROTOCOL_GUID \
+ { \
+ 0x65530BC7, 0xA359, 0x410f, {0xB0, 0x10, 0x5A, 0xAD, 0xC7, 0xEC, 0x2B, 0x62 } \
+ }
+
+typedef struct _EFI_TCP4_PROTOCOL EFI_TCP4_PROTOCOL;
+
+///
+/// EFI_TCP4_SERVICE_POINT is deprecated in the UEFI 2.4B and should not be used any more.
+/// The definition in here is only present to provide backwards compatability.
+///
+typedef struct {
+ EFI_HANDLE InstanceHandle;
+ EFI_IPv4_ADDRESS LocalAddress;
+ UINT16 LocalPort;
+ EFI_IPv4_ADDRESS RemoteAddress;
+ UINT16 RemotePort;
+} EFI_TCP4_SERVICE_POINT;
+
+///
+/// EFI_TCP4_VARIABLE_DATA is deprecated in the UEFI 2.4B and should not be used any more.
+/// The definition in here is only present to provide backwards compatability.
+///
+typedef struct {
+ EFI_HANDLE DriverHandle;
+ UINT32 ServiceCount;
+ EFI_TCP4_SERVICE_POINT Services[1];
+} EFI_TCP4_VARIABLE_DATA;
+
+typedef struct {
+ BOOLEAN UseDefaultAddress;
+ EFI_IPv4_ADDRESS StationAddress;
+ EFI_IPv4_ADDRESS SubnetMask;
+ UINT16 StationPort;
+ EFI_IPv4_ADDRESS RemoteAddress;
+ UINT16 RemotePort;
+ BOOLEAN ActiveFlag;
+} EFI_TCP4_ACCESS_POINT;
+
+typedef struct {
+ UINT32 ReceiveBufferSize;
+ UINT32 SendBufferSize;
+ UINT32 MaxSynBackLog;
+ UINT32 ConnectionTimeout;
+ UINT32 DataRetries;
+ UINT32 FinTimeout;
+ UINT32 TimeWaitTimeout;
+ UINT32 KeepAliveProbes;
+ UINT32 KeepAliveTime;
+ UINT32 KeepAliveInterval;
+ BOOLEAN EnableNagle;
+ BOOLEAN EnableTimeStamp;
+ BOOLEAN EnableWindowScaling;
+ BOOLEAN EnableSelectiveAck;
+ BOOLEAN EnablePathMtuDiscovery;
+} EFI_TCP4_OPTION;
+
+typedef struct {
+ //
+ // I/O parameters
+ //
+ UINT8 TypeOfService;
+ UINT8 TimeToLive;
+
+ //
+ // Access Point
+ //
+ EFI_TCP4_ACCESS_POINT AccessPoint;
+
+ //
+ // TCP Control Options
+ //
+ EFI_TCP4_OPTION *ControlOption;
+} EFI_TCP4_CONFIG_DATA;
+
+///
+/// TCP4 connnection state
+///
+typedef enum {
+ Tcp4StateClosed = 0,
+ Tcp4StateListen = 1,
+ Tcp4StateSynSent = 2,
+ Tcp4StateSynReceived = 3,
+ Tcp4StateEstablished = 4,
+ Tcp4StateFinWait1 = 5,
+ Tcp4StateFinWait2 = 6,
+ Tcp4StateClosing = 7,
+ Tcp4StateTimeWait = 8,
+ Tcp4StateCloseWait = 9,
+ Tcp4StateLastAck = 10
+} EFI_TCP4_CONNECTION_STATE;
+
+typedef struct {
+ EFI_EVENT Event;
+ EFI_STATUS Status;
+} EFI_TCP4_COMPLETION_TOKEN;
+
+typedef struct {
+ ///
+ /// The Status in the CompletionToken will be set to one of
+ /// the following values if the active open succeeds or an unexpected
+ /// error happens:
+ /// EFI_SUCCESS: The active open succeeds and the instance's
+ /// state is Tcp4StateEstablished.
+ /// EFI_CONNECTION_RESET: The connect fails because the connection is reset
+ /// either by instance itself or the communication peer.
+ /// EFI_CONNECTION_REFUSED: The connect fails because this connection is initiated with
+ /// an active open and the connection is refused.
+ /// EFI_ABORTED: The active open is aborted.
+ /// EFI_TIMEOUT: The connection establishment timer expires and
+ /// no more specific information is available.
+ /// EFI_NETWORK_UNREACHABLE: The active open fails because
+ /// an ICMP network unreachable error is received.
+ /// EFI_HOST_UNREACHABLE: The active open fails because an
+ /// ICMP host unreachable error is received.
+ /// EFI_PROTOCOL_UNREACHABLE: The active open fails
+ /// because an ICMP protocol unreachable error is received.
+ /// EFI_PORT_UNREACHABLE: The connection establishment
+ /// timer times out and an ICMP port unreachable error is received.
+ /// EFI_ICMP_ERROR: The connection establishment timer timeout and some other ICMP
+ /// error is received.
+ /// EFI_DEVICE_ERROR: An unexpected system or network error occurred.
+ /// EFI_NO_MEDIA: There was a media error.
+ ///
+ EFI_TCP4_COMPLETION_TOKEN CompletionToken;
+} EFI_TCP4_CONNECTION_TOKEN;
+
+typedef struct {
+ EFI_TCP4_COMPLETION_TOKEN CompletionToken;
+ EFI_HANDLE NewChildHandle;
+} EFI_TCP4_LISTEN_TOKEN;
+
+typedef struct {
+ UINT32 FragmentLength;
+ VOID *FragmentBuffer;
+} EFI_TCP4_FRAGMENT_DATA;
+
+typedef struct {
+ BOOLEAN UrgentFlag;
+ UINT32 DataLength;
+ UINT32 FragmentCount;
+ EFI_TCP4_FRAGMENT_DATA FragmentTable[1];
+} EFI_TCP4_RECEIVE_DATA;
+
+typedef struct {
+ BOOLEAN Push;
+ BOOLEAN Urgent;
+ UINT32 DataLength;
+ UINT32 FragmentCount;
+ EFI_TCP4_FRAGMENT_DATA FragmentTable[1];
+} EFI_TCP4_TRANSMIT_DATA;
+
+typedef struct {
+ ///
+ /// When transmission finishes or meets any unexpected error it will
+ /// be set to one of the following values:
+ /// EFI_SUCCESS: The receiving or transmission operation
+ /// completes successfully.
+ /// EFI_CONNECTION_FIN: The receiving operation fails because the communication peer
+ /// has closed the connection and there is no more data in the
+ /// receive buffer of the instance.
+ /// EFI_CONNECTION_RESET: The receiving or transmission operation fails
+ /// because this connection is reset either by instance
+ /// itself or the communication peer.
+ /// EFI_ABORTED: The receiving or transmission is aborted.
+ /// EFI_TIMEOUT: The transmission timer expires and no more
+ /// specific information is available.
+ /// EFI_NETWORK_UNREACHABLE: The transmission fails
+ /// because an ICMP network unreachable error is received.
+ /// EFI_HOST_UNREACHABLE: The transmission fails because an
+ /// ICMP host unreachable error is received.
+ /// EFI_PROTOCOL_UNREACHABLE: The transmission fails
+ /// because an ICMP protocol unreachable error is received.
+ /// EFI_PORT_UNREACHABLE: The transmission fails and an
+ /// ICMP port unreachable error is received.
+ /// EFI_ICMP_ERROR: The transmission fails and some other
+ /// ICMP error is received.
+ /// EFI_DEVICE_ERROR: An unexpected system or network error occurs.
+ /// EFI_NO_MEDIA: There was a media error.
+ ///
+ EFI_TCP4_COMPLETION_TOKEN CompletionToken;
+ union {
+ ///
+ /// When this token is used for receiving, RxData is a pointer to EFI_TCP4_RECEIVE_DATA.
+ ///
+ EFI_TCP4_RECEIVE_DATA *RxData;
+ ///
+ /// When this token is used for transmitting, TxData is a pointer to EFI_TCP4_TRANSMIT_DATA.
+ ///
+ EFI_TCP4_TRANSMIT_DATA *TxData;
+ } Packet;
+} EFI_TCP4_IO_TOKEN;
+
+typedef struct {
+ EFI_TCP4_COMPLETION_TOKEN CompletionToken;
+ BOOLEAN AbortOnClose;
+} EFI_TCP4_CLOSE_TOKEN;
+
+//
+// Interface definition for TCP4 protocol
+//
+
+/**
+ Get the current operational status.
+
+ @param This The pointer to the EFI_TCP4_PROTOCOL instance.
+ @param Tcp4State The pointer to the buffer to receive the current TCP state.
+ @param Tcp4ConfigData The pointer to the buffer to receive the current TCP configuration.
+ @param Ip4ModeData The pointer to the buffer to receive the current IPv4 configuration
+ data used by the TCPv4 instance.
+ @param MnpConfigData The pointer to the buffer to receive the current MNP configuration
+ data used indirectly by the TCPv4 instance.
+ @param SnpModeData The pointer to the buffer to receive the current SNP configuration
+ data used indirectly by the TCPv4 instance.
+
+ @retval EFI_SUCCESS The mode data was read.
+ @retval EFI_INVALID_PARAMETER This is NULL.
+ @retval EFI_NOT_STARTED No configuration data is available because this instance hasn't
+ been started.
+
+**/
+typedef
+EFI_STATUS
+(EFIAPI *EFI_TCP4_GET_MODE_DATA)(
+ IN EFI_TCP4_PROTOCOL *This,
+ OUT EFI_TCP4_CONNECTION_STATE *Tcp4State OPTIONAL,
+ OUT EFI_TCP4_CONFIG_DATA *Tcp4ConfigData OPTIONAL,
+ OUT EFI_IP4_MODE_DATA *Ip4ModeData OPTIONAL,
+ OUT EFI_MANAGED_NETWORK_CONFIG_DATA *MnpConfigData OPTIONAL,
+ OUT EFI_SIMPLE_NETWORK_MODE *SnpModeData OPTIONAL
+ );
+
+/**
+ Initialize or brutally reset the operational parameters for this EFI TCPv4 instance.
+
+ @param This The pointer to the EFI_TCP4_PROTOCOL instance.
+ @param Tcp4ConfigData The pointer to the configure data to configure the instance.
+
+ @retval EFI_SUCCESS The operational settings are set, changed, or reset
+ successfully.
+ @retval EFI_INVALID_PARAMETER Some parameter is invalid.
+ @retval EFI_NO_MAPPING When using a default address, configuration (through
+ DHCP, BOOTP, RARP, etc.) is not finished yet.
+ @retval EFI_ACCESS_DENIED Configuring TCP instance when it is configured without
+ calling Configure() with NULL to reset it.
+ @retval EFI_DEVICE_ERROR An unexpected network or system error occurred.
+ @retval EFI_UNSUPPORTED One or more of the control options are not supported in
+ the implementation.
+ @retval EFI_OUT_OF_RESOURCES Could not allocate enough system resources when
+ executing Configure().
+
+**/
+typedef
+EFI_STATUS
+(EFIAPI *EFI_TCP4_CONFIGURE)(
+ IN EFI_TCP4_PROTOCOL *This,
+ IN EFI_TCP4_CONFIG_DATA *TcpConfigData OPTIONAL
+ );
+
+
+/**
+ Add or delete a route entry to the route table
+
+ @param This The pointer to the EFI_TCP4_PROTOCOL instance.
+ @param DeleteRoute Set it to TRUE to delete this route from the routing table. Set it to
+ FALSE to add this route to the routing table.
+ DestinationAddress and SubnetMask are used as the
+ keywords to search route entry.
+ @param SubnetAddress The destination network.
+ @param SubnetMask The subnet mask of the destination network.
+ @param GatewayAddress The gateway address for this route. It must be on the same
+ subnet with the station address unless a direct route is specified.
+
+ @retval EFI_SUCCESS The operation completed successfully.
+ @retval EFI_NOT_STARTED The EFI TCPv4 Protocol instance has not been configured.
+ @retval EFI_NO_MAPPING When using a default address, configuration (DHCP, BOOTP,
+ RARP, etc.) is not finished yet.
+ @retval EFI_INVALID_PARAMETER One or more of the following conditions is TRUE:
+ - This is NULL.
+ - SubnetAddress is NULL.
+ - SubnetMask is NULL.
+ - GatewayAddress is NULL.
+ - *SubnetAddress is not NULL a valid subnet address.
+ - *SubnetMask is not a valid subnet mask.
+ - *GatewayAddress is not a valid unicast IP address or it
+ is not in the same subnet.
+ @retval EFI_OUT_OF_RESOURCES Could not allocate enough resources to add the entry to the
+ routing table.
+ @retval EFI_NOT_FOUND This route is not in the routing table.
+ @retval EFI_ACCESS_DENIED The route is already defined in the routing table.
+ @retval EFI_UNSUPPORTED The TCP driver does not support this operation.
+
+**/
+typedef
+EFI_STATUS
+(EFIAPI *EFI_TCP4_ROUTES)(
+ IN EFI_TCP4_PROTOCOL *This,
+ IN BOOLEAN DeleteRoute,
+ IN EFI_IPv4_ADDRESS *SubnetAddress,
+ IN EFI_IPv4_ADDRESS *SubnetMask,
+ IN EFI_IPv4_ADDRESS *GatewayAddress
+ );
+
+/**
+ Initiate a nonblocking TCP connection request for an active TCP instance.
+
+ @param This The pointer to the EFI_TCP4_PROTOCOL instance.
+ @param ConnectionToken The pointer to the connection token to return when the TCP three
+ way handshake finishes.
+
+ @retval EFI_SUCCESS The connection request is successfully initiated and the state
+ of this TCPv4 instance has been changed to Tcp4StateSynSent.
+ @retval EFI_NOT_STARTED This EFI TCPv4 Protocol instance has not been configured.
+ @retval EFI_ACCESS_DENIED One or more of the following conditions are TRUE:
+ - This instance is not configured as an active one.
+ - This instance is not in Tcp4StateClosed state.
+ @retval EFI_INVALID_PARAMETER One or more of the following are TRUE:
+ - This is NULL.
+ - ConnectionToken is NULL.
+ - ConnectionToken->CompletionToken.Event is NULL.
+ @retval EFI_OUT_OF_RESOURCES The driver can't allocate enough resource to initiate the activ eopen.
+ @retval EFI_DEVICE_ERROR An unexpected system or network error occurred.
+
+**/
+typedef
+EFI_STATUS
+(EFIAPI *EFI_TCP4_CONNECT)(
+ IN EFI_TCP4_PROTOCOL *This,
+ IN EFI_TCP4_CONNECTION_TOKEN *ConnectionToken
+ );
+
+
+/**
+ Listen on the passive instance to accept an incoming connection request. This is a nonblocking operation.
+
+ @param This The pointer to the EFI_TCP4_PROTOCOL instance.
+ @param ListenToken The pointer to the listen token to return when operation finishes.
+
+ @retval EFI_SUCCESS The listen token has been queued successfully.
+ @retval EFI_NOT_STARTED This EFI TCPv4 Protocol instance has not been configured.
+ @retval EFI_ACCESS_DENIED One or more of the following are TRUE:
+ - This instance is not a passive instance.
+ - This instance is not in Tcp4StateListen state.
+ - The same listen token has already existed in the listen
+ token queue of this TCP instance.
+ @retval EFI_INVALID_PARAMETER One or more of the following are TRUE:
+ - This is NULL.
+ - ListenToken is NULL.
+ - ListentToken->CompletionToken.Event is NULL.
+ @retval EFI_OUT_OF_RESOURCES Could not allocate enough resource to finish the operation.
+ @retval EFI_DEVICE_ERROR Any unexpected and not belonged to above category error.
+
+**/
+typedef
+EFI_STATUS
+(EFIAPI *EFI_TCP4_ACCEPT)(
+ IN EFI_TCP4_PROTOCOL *This,
+ IN EFI_TCP4_LISTEN_TOKEN *ListenToken
+ );
+
+/**
+ Queues outgoing data into the transmit queue.
+
+ @param This The pointer to the EFI_TCP4_PROTOCOL instance.
+ @param Token The pointer to the completion token to queue to the transmit queue.
+
+ @retval EFI_SUCCESS The data has been queued for transmission.
+ @retval EFI_NOT_STARTED This EFI TCPv4 Protocol instance has not been configured.
+ @retval EFI_NO_MAPPING When using a default address, configuration (DHCP, BOOTP,
+ RARP, etc.) is not finished yet.
+ @retval EFI_INVALID_PARAMETER One or more of the following are TRUE:
+ - This is NULL.
+ - Token is NULL.
+ - Token->CompletionToken.Event is NULL.
+ - Token->Packet.TxData is NULL L.
+ - Token->Packet.FragmentCount is zero.
+ - Token->Packet.DataLength is not equal to the sum of fragment lengths.
+ @retval EFI_ACCESS_DENIED One or more of the following conditions is TRUE:
+ - A transmit completion token with the same Token->CompletionToken.Event
+ was already in the transmission queue.
+ - The current instance is in Tcp4StateClosed state.
+ - The current instance is a passive one and it is in
+ Tcp4StateListen state.
+ - User has called Close() to disconnect this connection.
+ @retval EFI_NOT_READY The completion token could not be queued because the
+ transmit queue is full.
+ @retval EFI_OUT_OF_RESOURCES Could not queue the transmit data because of resource
+ shortage.
+ @retval EFI_NETWORK_UNREACHABLE There is no route to the destination network or address.
+
+**/
+typedef
+EFI_STATUS
+(EFIAPI *EFI_TCP4_TRANSMIT)(
+ IN EFI_TCP4_PROTOCOL *This,
+ IN EFI_TCP4_IO_TOKEN *Token
+ );
+
+
+/**
+ Places an asynchronous receive request into the receiving queue.
+
+ @param This The pointer to the EFI_TCP4_PROTOCOL instance.
+ @param Token The pointer to a token that is associated with the receive data
+ descriptor.
+
+ @retval EFI_SUCCESS The receive completion token was cached.
+ @retval EFI_NOT_STARTED This EFI TCPv4 Protocol instance has not been configured.
+ @retval EFI_NO_MAPPING When using a default address, configuration (DHCP, BOOTP, RARP,
+ etc.) is not finished yet.
+ @retval EFI_INVALID_PARAMETER One or more of the following conditions is TRUE:
+ - This is NULL.
+ - Token is NULL.
+ - Token->CompletionToken.Event is NULL.
+ - Token->Packet.RxData is NULL.
+ - Token->Packet.RxData->DataLength is 0.
+ - The Token->Packet.RxData->DataLength is not
+ the sum of all FragmentBuffer length in FragmentTable.
+ @retval EFI_OUT_OF_RESOURCES The receive completion token could not be queued due to a lack of
+ system resources (usually memory).
+ @retval EFI_DEVICE_ERROR An unexpected system or network error occurred.
+ @retval EFI_ACCESS_DENIED One or more of the following conditions is TRUE:
+ - A receive completion token with the same Token-
+ >CompletionToken.Event was already in the receive
+ queue.
+ - The current instance is in Tcp4StateClosed state.
+ - The current instance is a passive one and it is in
+ Tcp4StateListen state.
+ - User has called Close() to disconnect this connection.
+ @retval EFI_CONNECTION_FIN The communication peer has closed the connection and there is
+ no any buffered data in the receive buffer of this instance.
+ @retval EFI_NOT_READY The receive request could not be queued because the receive queue is full.
+
+**/
+typedef
+EFI_STATUS
+(EFIAPI *EFI_TCP4_RECEIVE)(
+ IN EFI_TCP4_PROTOCOL *This,
+ IN EFI_TCP4_IO_TOKEN *Token
+ );
+
+/**
+ Disconnecting a TCP connection gracefully or reset a TCP connection. This function is a
+ nonblocking operation.
+
+ @param This The pointer to the EFI_TCP4_PROTOCOL instance.
+ @param CloseToken The pointer to the close token to return when operation finishes.
+
+ @retval EFI_SUCCESS The Close() is called successfully.
+ @retval EFI_NOT_STARTED This EFI TCPv4 Protocol instance has not been configured.
+ @retval EFI_ACCESS_DENIED One or more of the following are TRUE:
+ - Configure() has been called with
+ TcpConfigData set to NULL and this function has
+ not returned.
+ - Previous Close() call on this instance has not
+ finished.
+ @retval EFI_INVALID_PARAMETER One or more of the following are TRUE:
+ - This is NULL.
+ - CloseToken is NULL.
+ - CloseToken->CompletionToken.Event is NULL.
+ @retval EFI_OUT_OF_RESOURCES Could not allocate enough resource to finish the operation.
+ @retval EFI_DEVICE_ERROR Any unexpected and not belonged to above category error.
+
+**/
+typedef
+EFI_STATUS
+(EFIAPI *EFI_TCP4_CLOSE)(
+ IN EFI_TCP4_PROTOCOL *This,
+ IN EFI_TCP4_CLOSE_TOKEN *CloseToken
+ );
+
+/**
+ Abort an asynchronous connection, listen, transmission or receive request.
+
+ @param This The pointer to the EFI_TCP4_PROTOCOL instance.
+ @param Token The pointer to a token that has been issued by
+ EFI_TCP4_PROTOCOL.Connect(),
+ EFI_TCP4_PROTOCOL.Accept(),
+ EFI_TCP4_PROTOCOL.Transmit() or
+ EFI_TCP4_PROTOCOL.Receive(). If NULL, all pending
+ tokens issued by above four functions will be aborted. Type
+ EFI_TCP4_COMPLETION_TOKEN is defined in
+ EFI_TCP4_PROTOCOL.Connect().
+
+ @retval EFI_SUCCESS The asynchronous I/O request is aborted and Token->Event
+ is signaled.
+ @retval EFI_INVALID_PARAMETER This is NULL.
+ @retval EFI_NOT_STARTED This instance hasn't been configured.
+ @retval EFI_NO_MAPPING When using the default address, configuration
+ (DHCP, BOOTP,RARP, etc.) hasn't finished yet.
+ @retval EFI_NOT_FOUND The asynchronous I/O request isn't found in the
+ transmission or receive queue. It has either
+ completed or wasn't issued by Transmit() and Receive().
+ @retval EFI_UNSUPPORTED The implementation does not support this function.
+
+**/
+typedef
+EFI_STATUS
+(EFIAPI *EFI_TCP4_CANCEL)(
+ IN EFI_TCP4_PROTOCOL *This,
+ IN EFI_TCP4_COMPLETION_TOKEN *Token OPTIONAL
+ );
+
+
+/**
+ Poll to receive incoming data and transmit outgoing segments.
+
+ @param This The pointer to the EFI_TCP4_PROTOCOL instance.
+
+ @retval EFI_SUCCESS Incoming or outgoing data was processed.
+ @retval EFI_INVALID_PARAMETER This is NULL.
+ @retval EFI_DEVICE_ERROR An unexpected system or network error occurred.
+ @retval EFI_NOT_READY No incoming or outgoing data is processed.
+ @retval EFI_TIMEOUT Data was dropped out of the transmission or receive queue.
+ Consider increasing the polling rate.
+
+**/
+typedef
+EFI_STATUS
+(EFIAPI *EFI_TCP4_POLL)(
+ IN EFI_TCP4_PROTOCOL *This
+ );
+
+///
+/// The EFI_TCP4_PROTOCOL defines the EFI TCPv4 Protocol child to be used by
+/// any network drivers or applications to send or receive data stream.
+/// It can either listen on a specified port as a service or actively connected
+/// to remote peer as a client. Each instance has its own independent settings,
+/// such as the routing table.
+///
+struct _EFI_TCP4_PROTOCOL {
+ EFI_TCP4_GET_MODE_DATA GetModeData;
+ EFI_TCP4_CONFIGURE Configure;
+ EFI_TCP4_ROUTES Routes;
+ EFI_TCP4_CONNECT Connect;
+ EFI_TCP4_ACCEPT Accept;
+ EFI_TCP4_TRANSMIT Transmit;
+ EFI_TCP4_RECEIVE Receive;
+ EFI_TCP4_CLOSE Close;
+ EFI_TCP4_CANCEL Cancel;
+ EFI_TCP4_POLL Poll;
+};
+
+extern EFI_GUID gEfiTcp4ServiceBindingProtocolGuid;
+extern EFI_GUID gEfiTcp4ProtocolGuid;
+
+#endif