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qemu / edk2 / c1d1910be6e04a8b1a73090cf2881fb698947a6e / . / NetworkPkg / TcpDxe / TcpMain.h
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/** @file
Declaration of protocol interfaces in EFI_TCP4_PROTOCOL and EFI_TCP6_PROTOCOL.
It is the common head file for all Tcp*.c in TCP driver.
Copyright (c) 2009 - 2016, Intel Corporation. All rights reserved.<BR>
Copyright (c) Microsoft Corporation
SPDX-License-Identifier: BSD-2-Clause-Patent
**/
#ifndef _TCP_MAIN_H_
#define _TCP_MAIN_H_
#include <Protocol/ServiceBinding.h>
#include <Protocol/DriverBinding.h>
#include <Protocol/Hash2.h>
#include <Library/IpIoLib.h>
#include <Library/DevicePathLib.h>
#include <Library/PrintLib.h>
#include "Socket.h"
#include "TcpProto.h"
#include "TcpDriver.h"
#include "TcpFunc.h"
extern UINT16 mTcp4RandomPort;
extern UINT16 mTcp6RandomPort;
extern CHAR16 *mTcpStateName[];
extern EFI_COMPONENT_NAME_PROTOCOL gTcpComponentName;
extern EFI_COMPONENT_NAME2_PROTOCOL gTcpComponentName2;
extern EFI_UNICODE_STRING_TABLE *gTcpControllerNameTable;
extern LIST_ENTRY mTcpRunQue;
extern LIST_ENTRY mTcpListenQue;
extern TCP_SEQNO mTcpGlobalSecret;
extern UINT32 mTcpTick;
///
/// 30 seconds.
///
#define TCP6_KEEP_NEIGHBOR_TIME 30
///
/// 5 seconds, since 1 tick equals 200ms.
///
#define TCP6_REFRESH_NEIGHBOR_TICK 25
#define TCP_EXPIRE_TIME 65535
typedef union {
EFI_TCP4_CONFIG_DATA Tcp4CfgData;
EFI_TCP6_CONFIG_DATA Tcp6CfgData;
} TCP_CONFIG_DATA;
typedef union {
EFI_TCP4_ACCESS_POINT Tcp4Ap;
EFI_TCP6_ACCESS_POINT Tcp6Ap;
} TCP_ACCESS_POINT;
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;
typedef struct _TCP6_MODE_DATA {
EFI_TCP6_CONNECTION_STATE *Tcp6State;
EFI_TCP6_CONFIG_DATA *Tcp6ConfigData;
EFI_IP6_MODE_DATA *Ip6ModeData;
EFI_MANAGED_NETWORK_CONFIG_DATA *MnpConfigData;
EFI_SIMPLE_NETWORK_MODE *SnpModeData;
} TCP6_MODE_DATA;
typedef struct _TCP4_ROUTE_INFO {
BOOLEAN DeleteRoute;
EFI_IPv4_ADDRESS *SubnetAddress;
EFI_IPv4_ADDRESS *SubnetMask;
EFI_IPv4_ADDRESS *GatewayAddress;
} TCP4_ROUTE_INFO;
typedef struct {
EFI_SERVICE_BINDING_PROTOCOL *ServiceBinding;
UINTN NumberOfChildren;
EFI_HANDLE *ChildHandleBuffer;
} TCP_DESTROY_CHILD_IN_HANDLE_BUF_CONTEXT;
//
// EFI_TCP4_PROTOCOL definitions.
//
/**
Get the current operational status.
@param[in] This Pointer to the EFI_TCP4_PROTOCOL instance.
@param[out] Tcp4State Pointer to the buffer to receive the current TCP
state. Optional parameter that may be NULL.
@param[out] Tcp4ConfigData Pointer to the buffer to receive the current TCP
configuration. Optional parameter that may be NULL.
@param[out] Ip4ModeData Pointer to the buffer to receive the current
IPv4 configuration. Optional parameter that may be NULL.
@param[out] MnpConfigData Pointer to the buffer to receive the current MNP
configuration data indirectly used by the TCPv4
Instance. Optional parameter that may be NULL.
@param[out] SnpModeData Pointer to the buffer to receive the current SNP
configuration data indirectly used by the TCPv4
Instance. Optional parameter that may be NULL.
@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.
@param[in] This Pointer to the EFI_TCP4_PROTOCOL instance.
@param[in] TcpConfigData Pointer to the configure data to configure the
instance. Optional parameter that may be NULL.
@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 the 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.
@param[in] This Pointer to the EFI_TCP4_PROTOCOL instance.
@param[in] DeleteRoute If TRUE, delete the specified route from routing
table; if FALSE, add the specified route to
routing table.
@param[in] SubnetAddress The destination network.
@param[in] SubnetMask The subnet mask for the destination network.
@param[in] GatewayAddress The gateway address for this route.
@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.
@param[in] This Pointer to the EFI_TCP4_PROTOCOL instance.
@param[in] ConnectionToken Pointer to the connection token to return when
the TCP three way handshake finishes.
@retval EFI_SUCCESS The connection request is successfully
initiated.
@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 resources 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.
@param[in] This Pointer to the EFI_TCP4_PROTOCOL instance.
@param[in] 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 instance 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 An unexpected system or network error occurred.
**/
EFI_STATUS
EFIAPI
Tcp4Accept (
IN EFI_TCP4_PROTOCOL *This,
IN EFI_TCP4_LISTEN_TOKEN *ListenToken
);
/**
Queues outgoing data into the transmit queue
@param[in] This Pointer to the EFI_TCP4_PROTOCOL instance
@param[in] 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 a
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.
@param[in] This Pointer to the EFI_TCP4_PROTOCOL instance.
@param[in] 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.
@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 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.
@param[in] This Pointer to the EFI_TCP4_PROTOCOL instance.
@param[in] 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 resources to finish the
operation.
@retval EFI_DEVICE_ERROR Any unexpected error not belonging to the error
categories given above.
**/
EFI_STATUS
EFIAPI
Tcp4Close (
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().
**/
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.
@param[in] 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
);
//
// EFI_TCP6_PROTOCOL definitions.
//
/**
Get the current operational status.
The GetModeData() function copies the current operational settings of this EFI TCPv6
Protocol instance into user-supplied buffers. This function can also be used to retrieve
the operational setting of underlying drivers such as IPv6, MNP, or SNP.
@param[in] This Pointer to the EFI_TCP6_PROTOCOL instance.
@param[out] Tcp6State The buffer in which the current TCP state is
returned. Optional parameter that may be NULL.
@param[out] Tcp6ConfigData The buffer in which the current TCP configuration
is returned. Optional parameter that may be NULL.
@param[out] Ip6ModeData The buffer in which the current IPv6 configuration
data used by the TCP instance is returned.
Optional parameter that may be NULL.
@param[out] MnpConfigData The buffer in which the current MNP configuration
data used indirectly by the TCP instance is returned.
Optional parameter that may be NULL.
@param[out] SnpModeData The buffer in which the current SNP mode data
used indirectly by the TCP instance is returned.
Optional parameter that may be NULL.
@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
Tcp6GetModeData (
IN EFI_TCP6_PROTOCOL *This,
OUT EFI_TCP6_CONNECTION_STATE *Tcp6State OPTIONAL,
OUT EFI_TCP6_CONFIG_DATA *Tcp6ConfigData OPTIONAL,
OUT EFI_IP6_MODE_DATA *Ip6ModeData 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 TCPv6 instance.
The Configure() function does the following:
- Initialize this TCP instance, i.e., initialize the communication end settings and
specify active open or passive open for an instance.
- Reset this TCP instance brutally, i.e., cancel all pending asynchronous tokens, flush
transmission and receiving buffer directly without informing the communication peer.
No other TCPv6 Protocol operation except Poll() can be executed by this instance until
it is configured properly. For an active TCP instance, after a proper configuration it
may call Connect() to initiates the three-way handshake. For a passive TCP instance,
its state will transit to Tcp6StateListen after configuration, and Accept() may be
called to listen the incoming TCP connection requests. If Tcp6ConfigData is set to NULL,
the instance is reset. Resetting process will be done brutally, the state machine will
be set to Tcp6StateClosed directly, the receive queue and transmit queue will be flushed,
and no traffic is allowed through this instance.
@param[in] This Pointer to the EFI_TCP6_PROTOCOL instance.
@param[in] Tcp6ConfigData Pointer to the configure data to configure the instance.
If Tcp6ConfigData is set to NULL, the instance is reset.
@retval EFI_SUCCESS The operational settings were set, changed, or reset
successfully.
@retval EFI_NO_MAPPING The underlying IPv6 driver was responsible for choosing a source
address for this instance, but no source address was available for
use.
@retval EFI_INVALID_PARAMETER One or more of the following conditions are TRUE:
- This is NULL.
- Tcp6ConfigData->AccessPoint.StationAddress is neither zero nor
one of the configured IP addresses in the underlying IPv6 driver.
- Tcp6ConfigData->AccessPoint.RemoteAddress isn't a valid unicast
IPv6 address.
- Tcp6ConfigData->AccessPoint.RemoteAddress is zero or
Tcp6ConfigData->AccessPoint.RemotePort is zero when
Tcp6ConfigData->AccessPoint.ActiveFlag is TRUE.
- A same access point has been configured in other TCP
instance properly.
@retval EFI_ACCESS_DENIED Configuring TCP instance when it is configured without
calling Configure() with NULL to reset it.
@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().
@retval EFI_DEVICE_ERROR An unexpected network or system error occurred.
**/
EFI_STATUS
EFIAPI
Tcp6Configure (
IN EFI_TCP6_PROTOCOL *This,
IN EFI_TCP6_CONFIG_DATA *Tcp6ConfigData OPTIONAL
);
/**
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 an 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 Tcp6StateClosed state. The
instance will transfer into Tcp6StateSynSent if the function returns EFI_SUCCESS.
If TCP three-way handshake succeeds, its state will become Tcp6StateEstablished;
otherwise, the state will return to Tcp6StateClosed.
@param[in] This Pointer to the EFI_TCP6_PROTOCOL instance.
@param[in] ConnectionToken Pointer to the connection token to return when the TCP
three-way handshake finishes.
@retval EFI_SUCCESS The connection request successfully initiated and the state of
this TCP instance has been changed to Tcp6StateSynSent.
@retval EFI_NOT_STARTED This EFI TCPv6 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 instance.
- This instance is not in Tcp6StateClosed 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 resources to initiate the active open.
@retval EFI_DEVICE_ERROR An unexpected system or network error occurred.
**/
EFI_STATUS
EFIAPI
Tcp6Connect (
IN EFI_TCP6_PROTOCOL *This,
IN EFI_TCP6_CONNECTION_TOKEN *ConnectionToken
);
/**
Listen on the passive instance to accept an incoming connection request. This is a
nonblocking operation.
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 new instance is in the Tcp6StateEstablished 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 the current TCP instance is in Tcp6StateListen state.
@param[in] This Pointer to the EFI_TCP6_PROTOCOL instance.
@param[in] ListenToken Pointer to the listen token to return when the operation finishes.
@retval EFI_SUCCESS The listen token was been queued successfully.
@retval EFI_NOT_STARTED This EFI TCPv6 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 Tcp6StateListen 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.
- ListenToken->CompletionToken.Event is NULL.
@retval EFI_OUT_OF_RESOURCES Could not allocate enough resources to finish the operation.
@retval EFI_DEVICE_ERROR Any unexpected error not belonging to the error
categories given above.
**/
EFI_STATUS
EFIAPI
Tcp6Accept (
IN EFI_TCP6_PROTOCOL *This,
IN EFI_TCP6_LISTEN_TOKEN *ListenToken
);
/**
Queues outgoing data into the transmit queue.
The Transmit() function queues a sending request to this TCP 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[in] This Pointer to the EFI_TCP6_PROTOCOL instance.
@param[in] 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 This EFI TCPv6 Protocol instance has not been configured.
@retval EFI_NO_MAPPING The underlying IPv6 driver was responsible for choosing a
source address for this instance, but no source address was
available for use.
@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.
- 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 are TRUE:
- A transmit completion token with the same Token->
CompletionToken.Event was already in the
transmission queue.
- The current instance is in Tcp6StateClosed state.
- The current instance is a passive one and it is in
Tcp6StateListen 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 a resource
shortage.
@retval EFI_NETWORK_UNREACHABLE There is no route to the destination network or address.
**/
EFI_STATUS
EFIAPI
Tcp6Transmit (
IN EFI_TCP6_PROTOCOL *This,
IN EFI_TCP6_IO_TOKEN *Token
);
/**
Places 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. The caller also must fill the DataLength, which
represents the whole length of all FragmentBuffer. When the receive operation completes, the
EFI TCPv6 Protocol driver updates the Token->CompletionToken.Status and Token->Packet.RxData
fields, and the Token->CompletionToken.Event is signaled. If data is obtained, the data and its length
will be copied into the FragmentTable. At 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 enables the user to receive the notification and receiving status. That
notification function is guaranteed to not be re-entered.
@param[in] This Pointer to the EFI_TCP6_PROTOCOL instance.
@param[in] 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 This EFI TCPv6 Protocol instance has not been configured.
@retval EFI_NO_MAPPING The underlying IPv6 driver was responsible for choosing a source
address for this instance, but no source address was available for use.
@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.
The EFI TCPv6 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 Tcp6StateClosed state.
- The current instance is a passive one and it is in
Tcp6StateListen state.
- The user has called Close() to disconnect this connection.
@retval EFI_CONNECTION_FIN The communication peer has closed the connection, and there is no
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
Tcp6Receive (
IN EFI_TCP6_PROTOCOL *This,
IN EFI_TCP6_IO_TOKEN *Token
);
/**
Disconnecting a TCP connection gracefully or reset a TCP connection. This function is a
nonblocking operation.
Initiate an asynchronous close token to the TCP driver. After Close() is called, any buffered
transmission data will be sent by the 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 Tcp6StateClosed state, all pending asynchronous
operations are signaled, and any buffers used for TCP network traffic are flushed.
@param[in] This Pointer to the EFI_TCP6_PROTOCOL instance.
@param[in] CloseToken Pointer to the close token to return when operation finishes.
@retval EFI_SUCCESS The Close() was called successfully.
@retval EFI_NOT_STARTED This EFI TCPv6 Protocol instance has not been configured.
@retval EFI_ACCESS_DENIED One or more of the following are TRUE:
- CloseToken or CloseToken->CompletionToken.Event is already in use.
- 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 resources to finish the operation.
@retval EFI_DEVICE_ERROR Any unexpected error not belonging to the error categories given above.
**/
EFI_STATUS
EFIAPI
Tcp6Close (
IN EFI_TCP6_PROTOCOL *This,
IN EFI_TCP6_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.
@param[in] This Pointer to the EFI_TCP6_PROTOCOL instance.
@param[in] Token Pointer to a token that has been issued by
EFI_TCP6_PROTOCOL.Connect(),
EFI_TCP6_PROTOCOL.Accept(),
EFI_TCP6_PROTOCOL.Transmit() or
EFI_TCP6_PROTOCOL.Receive(). If NULL, all pending
tokens issued by above four functions will be aborted. Type
EFI_TCP6_COMPLETION_TOKEN is defined in
EFI_TCP_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_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().
**/
EFI_STATUS
EFIAPI
Tcp6Cancel (
IN EFI_TCP6_PROTOCOL *This,
IN EFI_TCP6_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.
@param[in] This Pointer to the EFI_TCP6_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.
**/
EFI_STATUS
EFIAPI
Tcp6Poll (
IN EFI_TCP6_PROTOCOL *This
);
/**
Retrieves the Initial Sequence Number (ISN) for a TCP connection identified by local
and remote IP addresses and ports.
This method is based on https://datatracker.ietf.org/doc/html/rfc9293#section-3.4.1
Where the ISN is computed as follows:
ISN = TimeStamp + MD5(LocalIP, LocalPort, RemoteIP, RemotePort, Secret)
Otherwise:
ISN = M + F(localip, localport, remoteip, remoteport, secretkey)
"Here M is the 4 microsecond timer, and F() is a pseudorandom function (PRF) of the
connection's identifying parameters ("localip, localport, remoteip, remoteport")
and a secret key ("secretkey") (SHLD-1). F() MUST NOT be computable from the
outside (MUST-9), or an attacker could still guess at sequence numbers from the
ISN used for some other connection. The PRF could be implemented as a
cryptographic hash of the concatenation of the TCP connection parameters and some
secret data. For discussion of the selection of a specific hash algorithm and
management of the secret key data."
@param[in] LocalIp A pointer to the local IP address of the TCP connection.
@param[in] LocalIpSize The size, in bytes, of the LocalIp buffer.
@param[in] LocalPort The local port number of the TCP connection.
@param[in] RemoteIp A pointer to the remote IP address of the TCP connection.
@param[in] RemoteIpSize The size, in bytes, of the RemoteIp buffer.
@param[in] RemotePort The remote port number of the TCP connection.
@param[out] Isn A pointer to the variable that will receive the Initial
Sequence Number (ISN).
@retval EFI_SUCCESS The operation completed successfully, and the ISN was
retrieved.
@retval EFI_INVALID_PARAMETER One or more of the input parameters are invalid.
@retval EFI_UNSUPPORTED The operation is not supported.
**/
EFI_STATUS
TcpGetIsn (
IN UINT8 *LocalIp,
IN UINTN LocalIpSize,
IN UINT16 LocalPort,
IN UINT8 *RemoteIp,
IN UINTN RemoteIpSize,
IN UINT16 RemotePort,
OUT TCP_SEQNO *Isn
);
#endif