2. Fix the driver binding Stop() hang issue in the network stack. 3. Add Ip4 raw data support. 4. Add iSCSI Dhcp option 60 support. Signed-off-by: Fu Siyuan <siyuan.fu@intel.com> Reviewed-by: Ye Ting <ting.ye@intel.com> Reviewed-by: Ouyang Qian <qian.ouyang@intel.com> git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@13995 6f19259b-4bc3-4df7-8a09-765794883524
		
			
				
	
	
		
			495 lines
		
	
	
		
			24 KiB
		
	
	
	
		
			C++
		
	
	
	
	
	
			
		
		
	
	
			495 lines
		
	
	
		
			24 KiB
		
	
	
	
		
			C++
		
	
	
	
	
	
/** @file
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  TCP4 protocol services header file.
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Copyright (c) 2005 - 2012, Intel Corporation. All rights reserved.<BR>
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This program and the accompanying materials
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are licensed and made available under the terms and conditions of the BSD License
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which accompanies this distribution.  The full text of the license may be found at
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http://opensource.org/licenses/bsd-license.php<BR>
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THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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**/
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#ifndef _TCP4_MAIN_H_
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#define _TCP4_MAIN_H_
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#include "Socket.h"
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#include "Tcp4Proto.h"
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#include "Tcp4Func.h"
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#include "Tcp4Driver.h"
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extern UINT16  mTcp4RandomPort;
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extern CHAR16  *mTcpStateName[];
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//
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// Driver Produced Protocol Prototypes
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//
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//
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// Function prototype for the Tcp4 socket request handler
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//
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/**
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  The procotol handler provided to the socket layer, used to
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  dispatch the socket level requests by calling the corresponding
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  TCP layer functions.
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  @param  Sock                   Pointer to the socket of this TCP instance.
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  @param  Request                The code of this operation request.
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  @param  Data                   Pointer to the operation specific data passed in
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                                 together with the operation request.
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  @retval EFI_SUCCESS            The socket request is completed successfully.
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  @retval other                  The error status returned by the corresponding TCP
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                                 layer function.
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**/
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EFI_STATUS
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Tcp4Dispatcher (
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  IN SOCKET                  *Sock,
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  IN UINT8                   Request,
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  IN VOID                    *Data    OPTIONAL
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  );
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///
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/// TCP mode data
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///
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typedef struct _TCP4_MODE_DATA {
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  EFI_TCP4_CONNECTION_STATE       *Tcp4State;
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  EFI_TCP4_CONFIG_DATA            *Tcp4ConfigData;
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  EFI_IP4_MODE_DATA               *Ip4ModeData;
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  EFI_MANAGED_NETWORK_CONFIG_DATA *MnpConfigData;
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  EFI_SIMPLE_NETWORK_MODE         *SnpModeData;
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} TCP4_MODE_DATA;
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///
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/// TCP route infomation data
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///
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typedef struct _TCP4_ROUTE_INFO {
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  BOOLEAN           DeleteRoute;
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  EFI_IPv4_ADDRESS  *SubnetAddress;
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  EFI_IPv4_ADDRESS  *SubnetMask;
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  EFI_IPv4_ADDRESS  *GatewayAddress;
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} TCP4_ROUTE_INFO;
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typedef struct {
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  EFI_SERVICE_BINDING_PROTOCOL  *ServiceBinding;
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  UINTN                         NumberOfChildren;
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  EFI_HANDLE                    *ChildHandleBuffer;
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} TCP4_DESTROY_CHILD_IN_HANDLE_BUF_CONTEXT;
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/**
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  Get the current operational status of a TCP instance.
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  The GetModeData() function copies the current operational settings of this 
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  EFI TCPv4 Protocol instance into user-supplied buffers. This function can 
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  also be used to retrieve the operational setting of underlying drivers 
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  such as IPv4, MNP, or SNP.
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  @param  This                     Pointer to the EFI_TCP4_PROTOCOL instance.
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  @param  Tcp4State                Pointer to the buffer to receive the current TCP
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                                   state.
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  @param  Tcp4ConfigData           Pointer to the buffer to receive the current TCP
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                                   configuration.
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  @param  Ip4ModeData              Pointer to the buffer to receive the current IPv4 
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                                   configuration data used by the TCPv4 instance.
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  @param  MnpConfigData            Pointer to the buffer to receive the current MNP
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                                   configuration data indirectly used by the TCPv4
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                                   Instance.
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  @param  SnpModeData              Pointer to the buffer to receive the current SNP
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                                   configuration data indirectly used by the TCPv4
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                                   Instance.
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  @retval EFI_SUCCESS              The mode data was read.
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  @retval EFI_NOT_STARTED          No configuration data is available because this
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                                   instance hasn't been started.
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  @retval EFI_INVALID_PARAMETER    This is NULL.
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**/
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EFI_STATUS
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EFIAPI
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Tcp4GetModeData (
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  IN      EFI_TCP4_PROTOCOL                  *This,
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     OUT  EFI_TCP4_CONNECTION_STATE          *Tcp4State       OPTIONAL,
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     OUT  EFI_TCP4_CONFIG_DATA               *Tcp4ConfigData  OPTIONAL,
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     OUT  EFI_IP4_MODE_DATA                  *Ip4ModeData     OPTIONAL,
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     OUT  EFI_MANAGED_NETWORK_CONFIG_DATA    *MnpConfigData   OPTIONAL,
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     OUT  EFI_SIMPLE_NETWORK_MODE            *SnpModeData     OPTIONAL
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  );
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/**
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  Initialize or brutally reset the operational parameters for
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  this EFI TCPv4 instance.
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  The Configure() function does the following:
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  * Initialize this EFI TCPv4 instance, i.e., initialize the communication end 
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  setting, specify active open or passive open for an instance.
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  * Reset this TCPv4 instance brutally, i.e., cancel all pending asynchronous 
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  tokens, flush transmission and receiving buffer directly without informing 
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  the communication peer.
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  No other TCPv4 Protocol operation can be executed by this instance 
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  until it is configured properly. For an active TCP4 instance, after a proper 
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  configuration it may call Connect() to initiates the three-way handshake. 
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  For a passive TCP4 instance, its state will transit to Tcp4StateListen after 
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  configuration, and Accept() may be called to listen the incoming TCP connection 
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  request. If TcpConfigData is set to NULL, the instance is reset. Resetting 
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  process will be done brutally, the state machine will be set to Tcp4StateClosed 
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  directly, the receive queue and transmit queue will be flushed, and no traffic is 
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  allowed through this instance.
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  @param  This                     Pointer to the EFI_TCP4_PROTOCOL instance.
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  @param  TcpConfigData            Pointer to the configure data to configure the
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                                   instance.
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  @retval EFI_SUCCESS              The operational settings are set, changed, or
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                                   reset successfully.
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  @retval EFI_NO_MAPPING           When using a default address, configuration
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                                   (through DHCP, BOOTP, RARP, etc.) is not
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                                   finished.
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  @retval EFI_INVALID_PARAMETER    One or more parameters are invalid.
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  @retval EFI_ACCESS_DENIED        Configuring TCP instance when it is already
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                                   configured.
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  @retval EFI_DEVICE_ERROR         An unexpected network or system error occurred.
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  @retval EFI_UNSUPPORTED          One or more of the control options are not
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                                   supported in the implementation.
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  @retval EFI_OUT_OF_RESOURCES     Could not allocate enough system resources.
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**/
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EFI_STATUS
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EFIAPI
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Tcp4Configure (
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  IN EFI_TCP4_PROTOCOL        *This,
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  IN EFI_TCP4_CONFIG_DATA     *TcpConfigData     OPTIONAL
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  );
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/**
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  Add or delete routing entries.
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  The Routes() function adds or deletes a route from the instance's routing table.
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  The most specific route is selected by comparing the SubnetAddress with the 
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  destination IP address's arithmetical AND to the SubnetMask.
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  The default route is added with both SubnetAddress and SubnetMask set to 0.0.0.0. 
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  The default route matches all destination IP addresses if there is no more specific route.
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  Direct route is added with GatewayAddress set to 0.0.0.0. Packets are sent to 
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  the destination host if its address can be found in the Address Resolution Protocol (ARP) 
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  cache or it is on the local subnet. If the instance is configured to use default 
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  address, a direct route to the local network will be added automatically.
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  Each TCP instance has its own independent routing table. Instance that uses the 
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  default IP address will have a copy of the EFI_IP4_CONFIG_PROTOCOL's routing table. 
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  The copy will be updated automatically whenever the IP driver reconfigures its 
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  instance. As a result, the previous modification to the instance's local copy 
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  will be lost. The priority of checking the route table is specific with IP 
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  implementation and every IP implementation must comply with RFC 1122.
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  @param  This                     Pointer to the EFI_TCP4_PROTOCOL instance.
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  @param  DeleteRoute              If TRUE, delete the specified route from routing
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                                   table; if FALSE, add the specified route to
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                                   routing table.
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                                   DestinationAddress and SubnetMask are used as 
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                                   the keywords to search route entry.
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  @param  SubnetAddress            The destination network.
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  @param  SubnetMask               The subnet mask for the destination network.
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  @param  GatewayAddress           The gateway address for this route. 
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                                   It must be on the same subnet with the station 
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                                   address unless a direct route is specified.
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  @retval EFI_SUCCESS              The operation completed successfully.
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  @retval EFI_NOT_STARTED          The EFI_TCP4_PROTOCOL instance has not been
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                                   configured.
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  @retval EFI_NO_MAPPING           When using a default address, configuration
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                                   (through DHCP, BOOTP, RARP, etc.) is not
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                                   finished.
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  @retval EFI_INVALID_PARAMETER    One or more parameters are invalid.
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  @retval EFI_OUT_OF_RESOURCES     Could not allocate enough resources to add the
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                                   entry to the routing table.
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  @retval EFI_NOT_FOUND            This route is not in the routing table.
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  @retval EFI_ACCESS_DENIED        This route is already in the routing table.
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  @retval EFI_UNSUPPORTED          The TCP driver does not support this operation.
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**/
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EFI_STATUS
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EFIAPI
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Tcp4Routes (
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  IN EFI_TCP4_PROTOCOL           *This,
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  IN BOOLEAN                     DeleteRoute,
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  IN EFI_IPv4_ADDRESS            *SubnetAddress,
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  IN EFI_IPv4_ADDRESS            *SubnetMask,
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  IN EFI_IPv4_ADDRESS            *GatewayAddress
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  );
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/**
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  Initiate a nonblocking TCP connection request for an active TCP instance.
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  The Connect() function will initiate an active open to the remote peer configured 
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  in current TCP instance if it is configured active. If the connection succeeds 
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  or fails due to any error, the ConnectionToken->CompletionToken.Event will be 
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  signaled and ConnectionToken->CompletionToken.Status will be updated accordingly. 
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  This function can only be called for the TCP instance in Tcp4StateClosed state. 
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  The instance will transfer into Tcp4StateSynSent if the function returns EFI_SUCCESS. 
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  If TCP three way handshake succeeds, its state will become Tcp4StateEstablished, 
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  otherwise, the state will return to Tcp4StateClosed.
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  @param  This                     Pointer to the EFI_TCP4_PROTOCOL instance
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  @param  ConnectionToken          Pointer to the connection token to return when
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                                   the TCP three way handshake finishes.
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  @retval EFI_SUCCESS              The connection request is successfully initiated 
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                                   and the state of this TCPv4 instance has 
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                                   been changed to Tcp4StateSynSent.
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  @retval EFI_NOT_STARTED          This EFI_TCP4_PROTOCOL instance hasn't been
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                                   configured.
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  @retval EFI_ACCESS_DENIED        The instance is not configured as an active one
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                                   or it is not in Tcp4StateClosed state.
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  @retval EFI_INVALID_PARAMETER    One or more parameters are invalid.
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  @retval EFI_OUT_OF_RESOURCES     The driver can't allocate enough resource to
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                                   initiate the active open.
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  @retval EFI_DEVICE_ERROR         An unexpected system or network error occurred.
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**/
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EFI_STATUS
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EFIAPI
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Tcp4Connect (
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  IN EFI_TCP4_PROTOCOL           *This,
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  IN EFI_TCP4_CONNECTION_TOKEN   *ConnectionToken
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  );
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/**
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  Listen on the passive instance to accept an incoming connection request.
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  The Accept() function initiates an asynchronous accept request to wait for an 
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  incoming connection on the passive TCP instance. If a remote peer successfully 
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  establishes a connection with this instance, a new TCP instance will be created 
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  and its handle will be returned in ListenToken->NewChildHandle. The newly created 
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  instance is configured by inheriting the passive instance's configuration and is 
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  ready for use upon return. The instance is in the Tcp4StateEstablished state.
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  The ListenToken->CompletionToken.Event will be signaled when a new connection 
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  is accepted, user aborts the listen or connection is reset. This function only 
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  can be called when current TCP instance is in Tcp4StateListen state.
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  @param  This                     Pointer to the EFI_TCP4_PROTOCOL instance
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  @param  ListenToken              Pointer to the listen token to return when
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                                   operation finishes.
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  @retval EFI_SUCCESS              The listen token has been queued successfully.
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  @retval EFI_NOT_STARTED          The EFI_TCP4_PROTOCOL instance hasn't been
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                                   configured.
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  @retval EFI_ACCESS_DENIED        The instatnce is not a passive one or it is not
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                                   in Tcp4StateListen state or a same listen token
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                                   has already existed in the listen token queue of
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                                   this TCP instance.
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  @retval EFI_INVALID_PARAMETER    One or more parameters are invalid.
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  @retval EFI_OUT_OF_RESOURCES     Could not allocate enough resources to finish
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                                   the operation.
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  @retval EFI_DEVICE_ERROR         Any unexpected and not belonged to above category error.
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**/
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EFI_STATUS
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EFIAPI
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Tcp4Accept (
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  IN EFI_TCP4_PROTOCOL             *This,
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  IN EFI_TCP4_LISTEN_TOKEN         *ListenToken
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  );
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/**
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  Queues outgoing data into the transmit queue.
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						|
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  The Transmit() function queues a sending request to this TCPv4 instance along 
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  with the user data. The status of the token is updated and the event in the token 
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  will be signaled once the data is sent out or some error occurs.
 | 
						|
 | 
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  @param  This                     Pointer to the EFI_TCP4_PROTOCOL instance
 | 
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  @param  Token                    Pointer to the completion token to queue to the
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                                   transmit queue
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						|
 | 
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  @retval EFI_SUCCESS              The data has been queued for transmission.
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						|
  @retval EFI_NOT_STARTED          The EFI_TCP4_PROTOCOL instance hasn't been
 | 
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                                   configured.
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						|
  @retval EFI_NO_MAPPING           When using a default address, configuration
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						|
                                   (DHCP, BOOTP, RARP, etc.) is not finished yet.
 | 
						|
  @retval EFI_INVALID_PARAMETER    One or more parameters are invalid.
 | 
						|
  @retval EFI_ACCESS_DENIED        One or more of the following conditions is TRUE:
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                                   * A transmit completion token with the same
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						|
                                     Token-> CompletionToken.Event was already in the
 | 
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                                     transmission queue. 
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						|
                                   * The current instance is in Tcp4StateClosed state 
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						|
                                   * The current instance is a passive one and 
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                                     it is in Tcp4StateListen state. 
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                                   * User has called Close() to disconnect this 
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                                     connection.
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  @retval EFI_NOT_READY            The completion token could not be queued because
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						|
                                   the transmit queue is full.
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						|
  @retval EFI_OUT_OF_RESOURCES     Could not queue the transmit data because of
 | 
						|
                                   resource shortage.
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						|
  @retval EFI_NETWORK_UNREACHABLE  There is no route to the destination network or
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                                   address.
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						|
 | 
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**/
 | 
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EFI_STATUS
 | 
						|
EFIAPI
 | 
						|
Tcp4Transmit (
 | 
						|
  IN EFI_TCP4_PROTOCOL            *This,
 | 
						|
  IN EFI_TCP4_IO_TOKEN            *Token
 | 
						|
  );
 | 
						|
 | 
						|
/**
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						|
  Place an asynchronous receive request into the receiving queue.
 | 
						|
 | 
						|
  The Receive() function places a completion token into the receive packet queue. 
 | 
						|
  This function is always asynchronous. The caller must allocate the 
 | 
						|
  Token->CompletionToken.Event and the FragmentBuffer used to receive data. He also 
 | 
						|
  must fill the DataLength which represents the whole length of all FragmentBuffer. 
 | 
						|
  When the receive operation completes, the EFI TCPv4 Protocol driver updates the 
 | 
						|
  Token->CompletionToken.Status and Token->Packet.RxData fields and the 
 | 
						|
  Token->CompletionToken.Event is signaled. If got data the data and its length 
 | 
						|
  will be copy into the FragmentTable, in the same time the full length of received 
 | 
						|
  data will be recorded in the DataLength fields. Providing a proper notification 
 | 
						|
  function and context for the event will enable the user to receive the notification 
 | 
						|
  and receiving status. That notification function is guaranteed to not be re-entered.
 | 
						|
 | 
						|
  @param  This                     Pointer to the EFI_TCP4_PROTOCOL instance.
 | 
						|
  @param  Token                    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          The EFI_TCP4_PROTOCOL instance hasn't 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 parameters are invalid.
 | 
						|
  @retval EFI_OUT_OF_RESOURCES     The receive completion token could not be queued
 | 
						|
                                   due to a lack of system resources.
 | 
						|
  @retval EFI_DEVICE_ERROR         An unexpected system or network error occurred.
 | 
						|
                                   The EFI TCPv4 Protocol instance has been reset 
 | 
						|
                                   to startup defaults.
 | 
						|
  @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.
 | 
						|
 | 
						|
**/
 | 
						|
EFI_STATUS
 | 
						|
EFIAPI
 | 
						|
Tcp4Receive (
 | 
						|
  IN EFI_TCP4_PROTOCOL           *This,
 | 
						|
  IN EFI_TCP4_IO_TOKEN           *Token
 | 
						|
  );
 | 
						|
 | 
						|
/**
 | 
						|
  Disconnecting a TCP connection gracefully or reset a TCP connection.
 | 
						|
 | 
						|
  Initiate an asynchronous close token to TCP driver. After Close() is called, 
 | 
						|
  any buffered transmission data will be sent by TCP driver and the current 
 | 
						|
  instance will have a graceful close working flow described as RFC 793 if 
 | 
						|
  AbortOnClose is set to FALSE, otherwise, a rest packet will be sent by TCP 
 | 
						|
  driver to fast disconnect this connection. When the close operation completes 
 | 
						|
  successfully the TCP instance is in Tcp4StateClosed state, all pending 
 | 
						|
  asynchronous operation is signaled and any buffers used for TCP network traffic 
 | 
						|
  is flushed.
 | 
						|
 | 
						|
  @param  This                     Pointer to the EFI_TCP4_PROTOCOL instance.
 | 
						|
  @param  CloseToken               Pointer to the close token to return when
 | 
						|
                                   operation finishes.
 | 
						|
 | 
						|
  @retval EFI_SUCCESS              The operation completed successfully.
 | 
						|
  @retval EFI_NOT_STARTED          The EFI_TCP4_PROTOCOL instance hasn't 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 ore more parameters are invalid.
 | 
						|
  @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.
 | 
						|
 | 
						|
**/
 | 
						|
EFI_STATUS
 | 
						|
EFIAPI
 | 
						|
Tcp4Close (
 | 
						|
  IN EFI_TCP4_PROTOCOL           *This,
 | 
						|
  IN EFI_TCP4_CLOSE_TOKEN        *CloseToken
 | 
						|
  );
 | 
						|
 | 
						|
/**
 | 
						|
  Abort an asynchronous connection, listen, transmission or receive request.
 | 
						|
 | 
						|
  The Cancel() function aborts a pending connection, listen, transmit or receive 
 | 
						|
  request. If Token is not NULL and the token is in the connection, listen, 
 | 
						|
  transmission or receive queue when it is being cancelled, its Token->Status 
 | 
						|
  will be set to EFI_ABORTED and then Token->Event will be signaled. If the token 
 | 
						|
  is not in one of the queues, which usually means that the asynchronous operation 
 | 
						|
  has completed, EFI_NOT_FOUND is returned. If Token is NULL all asynchronous token 
 | 
						|
  issued by Connect(), Accept(), Transmit() and Receive()will be aborted.
 | 
						|
  NOTE: It has not been implemented currently.
 | 
						|
    
 | 
						|
  @param  This                     Pointer to the EFI_TCP4_PROTOCOL instance.
 | 
						|
  @param  Token                    Pointer to a token that has been issued by
 | 
						|
                                   Connect(), Accept(), Transmit() or Receive(). If
 | 
						|
                                   NULL, all pending tokens issued by above four
 | 
						|
                                   functions will be aborted.
 | 
						|
                                   
 | 
						|
  @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's been configured.
 | 
						|
  @retval  EFI_NO_MAPPING          When using the default address, configuration
 | 
						|
                                   (DHCP, BOOTP,RARP, etc.) hasn's finished yet.
 | 
						|
  @retval  EFI_NOT_FOUND           The asynchronous I/O request isn's found in the 
 | 
						|
                                   transmission or receive queue. It has either 
 | 
						|
                                   completed or wasn's issued by Transmit() and Receive().
 | 
						|
  @retval  EFI_UNSUPPORTED         The operation is not supported in current
 | 
						|
                                   implementation.
 | 
						|
  
 | 
						|
**/
 | 
						|
EFI_STATUS
 | 
						|
EFIAPI
 | 
						|
Tcp4Cancel (
 | 
						|
  IN EFI_TCP4_PROTOCOL           *This,
 | 
						|
  IN EFI_TCP4_COMPLETION_TOKEN   *Token    OPTIONAL
 | 
						|
  );
 | 
						|
 | 
						|
/**
 | 
						|
  Poll to receive incoming data and transmit outgoing segments.
 | 
						|
 | 
						|
  The Poll() function increases the rate that data is moved between the network 
 | 
						|
  and application and can be called when the TCP instance is created successfully. 
 | 
						|
  Its use is optional. In some implementations, the periodical timer in the MNP 
 | 
						|
  driver may not poll the underlying communications device fast enough to avoid 
 | 
						|
  drop packets. Drivers and applications that are experiencing packet loss should 
 | 
						|
  try calling the Poll() function in a high frequency.
 | 
						|
 | 
						|
  @param  This                     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 was processed.
 | 
						|
  @retval EFI_TIMEOUT              Data was dropped out of the transmission or
 | 
						|
                                   receive queue. Consider increasing the polling
 | 
						|
                                   rate.
 | 
						|
 | 
						|
**/
 | 
						|
EFI_STATUS
 | 
						|
EFIAPI
 | 
						|
Tcp4Poll (
 | 
						|
  IN EFI_TCP4_PROTOCOL        *This
 | 
						|
  );
 | 
						|
 | 
						|
#endif
 |