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mirror_edk2/MdeModulePkg/Universal/Network/Tcp4Dxe/Tcp4Main.h
erictian db0f0d3c79 Remove CONST modifier to be spec compliance 
Signed-off-by: erictian
Reviewed-by: lgao4

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@12194 6f19259b-4bc3-4df7-8a09-765794883524
2011-08-24 09:38:10 +00:00

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/** @file
TCP4 protocol services header file.
Copyright (c) 2005 - 2011, 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
which accompanies this distribution. The full text of the license may be found at
http://opensource.org/licenses/bsd-license.php<BR>
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
**/
#ifndef _TCP4_MAIN_H_
#define _TCP4_MAIN_H_
#include "Socket.h"
#include "Tcp4Proto.h"
#include "Tcp4Func.h"
#include "Tcp4Driver.h"
extern UINT16 mTcp4RandomPort;
extern CHAR16 *mTcpStateName[];
//
// Driver Produced Protocol Prototypes
//
//
// Function prototype for the Tcp4 socket request handler
//
/**
The procotol handler provided to the socket layer, used to
dispatch the socket level requests by calling the corresponding
TCP layer functions.
@param Sock Pointer to the socket of this TCP instance.
@param Request The code of this operation request.
@param Data Pointer to the operation specific data passed in
together with the operation request.
@retval EFI_SUCCESS The socket request is completed successfully.
@retval other The error status returned by the corresponding TCP
layer function.
**/
EFI_STATUS
Tcp4Dispatcher (
IN SOCKET *Sock,
IN UINT8 Request,
IN VOID *Data OPTIONAL
);
///
/// TCP mode data
///
typedef struct _TCP4_MODE_DATA {
EFI_TCP4_CONNECTION_STATE *Tcp4State;
EFI_TCP4_CONFIG_DATA *Tcp4ConfigData;
EFI_IP4_MODE_DATA *Ip4ModeData;
EFI_MANAGED_NETWORK_CONFIG_DATA *MnpConfigData;
EFI_SIMPLE_NETWORK_MODE *SnpModeData;
} TCP4_MODE_DATA;
///
/// TCP route infomation data
///
typedef struct _TCP4_ROUTE_INFO {
BOOLEAN DeleteRoute;
EFI_IPv4_ADDRESS *SubnetAddress;
EFI_IPv4_ADDRESS *SubnetMask;
EFI_IPv4_ADDRESS *GatewayAddress;
} TCP4_ROUTE_INFO;
/**
Get the current operational status of a TCP instance.
The GetModeData() function copies the current operational settings of this
EFI TCPv4 Protocol instance into user-supplied buffers. This function can
also be used to retrieve the operational setting of underlying drivers
such as IPv4, MNP, or SNP.
@param This Pointer to the EFI_TCP4_PROTOCOL instance.
@param Tcp4State Pointer to the buffer to receive the current TCP
state.
@param Tcp4ConfigData Pointer to the buffer to receive the current TCP
configuration.
@param Ip4ModeData Pointer to the buffer to receive the current IPv4
configuration data used by the TCPv4 instance.
@param MnpConfigData Pointer to the buffer to receive the current MNP
configuration data indirectly used by the TCPv4
Instance.
@param SnpModeData Pointer to the buffer to receive the current SNP
configuration data indirectly used by the TCPv4
Instance.
@retval EFI_SUCCESS The mode data was read.
@retval EFI_NOT_STARTED No configuration data is available because this
instance hasn't been started.
@retval EFI_INVALID_PARAMETER This is NULL.
**/
EFI_STATUS
EFIAPI
Tcp4GetModeData (
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.
The Configure() function does the following:
* Initialize this EFI TCPv4 instance, i.e., initialize the communication end
setting, specify active open or passive open for an instance.
* Reset this TCPv4 instance brutally, i.e., cancel all pending asynchronous
tokens, flush transmission and receiving buffer directly without informing
the communication peer.
No other TCPv4 Protocol operation can be executed by this instance
until it is configured properly. For an active TCP4 instance, after a proper
configuration it may call Connect() to initiates the three-way handshake.
For a passive TCP4 instance, its state will transit to Tcp4StateListen after
configuration, and Accept() may be called to listen the incoming TCP connection
request. If TcpConfigData is set to NULL, the instance is reset. Resetting
process will be done brutally, the state machine will be set to Tcp4StateClosed
directly, the receive queue and transmit queue will be flushed, and no traffic is
allowed through this instance.
@param This Pointer to the EFI_TCP4_PROTOCOL instance.
@param TcpConfigData Pointer to the configure data to configure the
instance.
@retval EFI_SUCCESS The operational settings are set, changed, or
reset successfully.
@retval EFI_NO_MAPPING When using a default address, configuration
(through DHCP, BOOTP, RARP, etc.) is not
finished.
@retval EFI_INVALID_PARAMETER One or more parameters are invalid.
@retval EFI_ACCESS_DENIED Configuring TCP instance when it is already
configured.
@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.
**/
EFI_STATUS
EFIAPI
Tcp4Configure (
IN EFI_TCP4_PROTOCOL *This,
IN EFI_TCP4_CONFIG_DATA *TcpConfigData OPTIONAL
);
/**
Add or delete routing entries.
The Routes() function adds or deletes a route from the instance's routing table.
The most specific route is selected by comparing the SubnetAddress with the
destination IP address's arithmetical AND to the SubnetMask.
The default route is added with both SubnetAddress and SubnetMask set to 0.0.0.0.
The default route matches all destination IP addresses if there is no more specific route.
Direct route is added with GatewayAddress set to 0.0.0.0. Packets are sent to
the destination host if its address can be found in the Address Resolution Protocol (ARP)
cache or it is on the local subnet. If the instance is configured to use default
address, a direct route to the local network will be added automatically.
Each TCP instance has its own independent routing table. Instance that uses the
default IP address will have a copy of the EFI_IP4_CONFIG_PROTOCOL's routing table.
The copy will be updated automatically whenever the IP driver reconfigures its
instance. As a result, the previous modification to the instance's local copy
will be lost. The priority of checking the route table is specific with IP
implementation and every IP implementation must comply with RFC 1122.
@param This Pointer to the EFI_TCP4_PROTOCOL instance.
@param DeleteRoute If TRUE, delete the specified route from routing
table; if FALSE, add the specified route to
routing table.
DestinationAddress and SubnetMask are used as
the keywords to search route entry.
@param SubnetAddress The destination network.
@param SubnetMask The subnet mask for 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_TCP4_PROTOCOL instance has not been
configured.
@retval EFI_NO_MAPPING When using a default address, configuration
(through DHCP, BOOTP, RARP, etc.) is not
finished.
@retval EFI_INVALID_PARAMETER One or more parameters are invalid.
@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 This route is already in the routing table.
@retval EFI_UNSUPPORTED The TCP driver does not support this operation.
**/
EFI_STATUS
EFIAPI
Tcp4Routes (
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.
The Connect() function will initiate an active open to the remote peer configured
in current TCP instance if it is configured active. If the connection succeeds
or fails due to any error, the ConnectionToken->CompletionToken.Event will be
signaled and ConnectionToken->CompletionToken.Status will be updated accordingly.
This function can only be called for the TCP instance in Tcp4StateClosed state.
The instance will transfer into Tcp4StateSynSent if the function returns EFI_SUCCESS.
If TCP three way handshake succeeds, its state will become Tcp4StateEstablished,
otherwise, the state will return to Tcp4StateClosed.
@param This Pointer to the EFI_TCP4_PROTOCOL instance
@param ConnectionToken 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_TCP4_PROTOCOL instance hasn't been
configured.
@retval EFI_ACCESS_DENIED The instance is not configured as an active one
or it is not in Tcp4StateClosed state.
@retval EFI_INVALID_PARAMETER One or more parameters are invalid.
@retval EFI_OUT_OF_RESOURCES The driver can't allocate enough resource to
initiate the active open.
@retval EFI_DEVICE_ERROR An unexpected system or network error occurred.
**/
EFI_STATUS
EFIAPI
Tcp4Connect (
IN EFI_TCP4_PROTOCOL *This,
IN EFI_TCP4_CONNECTION_TOKEN *ConnectionToken
);
/**
Listen on the passive instance to accept an incoming connection request.
The Accept() function initiates an asynchronous accept request to wait for an
incoming connection on the passive TCP instance. If a remote peer successfully
establishes a connection with this instance, a new TCP instance will be created
and its handle will be returned in ListenToken->NewChildHandle. The newly created
instance is configured by inheriting the passive instance's configuration and is
ready for use upon return. The instance is in the Tcp4StateEstablished state.
The ListenToken->CompletionToken.Event will be signaled when a new connection
is accepted, user aborts the listen or connection is reset. This function only
can be called when current TCP instance is in Tcp4StateListen state.
@param This Pointer to the EFI_TCP4_PROTOCOL instance
@param ListenToken Pointer to the listen token to return when
operation finishes.
@retval EFI_SUCCESS The listen token has been queued successfully.
@retval EFI_NOT_STARTED The EFI_TCP4_PROTOCOL instance hasn't been
configured.
@retval EFI_ACCESS_DENIED The instatnce is not a passive one or it is not
in Tcp4StateListen state or a same listen token
has already existed in the listen token queue of
this TCP instance.
@retval EFI_INVALID_PARAMETER One or more parameters are invalid.
@retval EFI_OUT_OF_RESOURCES Could not allocate enough resources to finish
the operation.
@retval EFI_DEVICE_ERROR Any unexpected and not belonged to above category error.
**/
EFI_STATUS
EFIAPI
Tcp4Accept (
IN EFI_TCP4_PROTOCOL *This,
IN EFI_TCP4_LISTEN_TOKEN *ListenToken
);
/**
Queues outgoing data into the transmit queue.
The Transmit() function queues a sending request to this TCPv4 instance along
with the user data. The status of the token is updated and the event in the token
will be signaled once the data is sent out or some error occurs.
@param This Pointer to the EFI_TCP4_PROTOCOL instance
@param Token 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 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_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.
**/
EFI_STATUS
EFIAPI
Tcp4Transmit (
IN EFI_TCP4_PROTOCOL *This,
IN EFI_TCP4_IO_TOKEN *Token
);
/**
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
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