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audk/NetworkPkg/TcpDxe/TcpMain.c

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/** @file
Implementation of EFI_TCP4_PROTOCOL and EFI_TCP6_PROTOCOL.
(C) Copyright 2014 Hewlett-Packard Development Company, L.P.<BR>
Copyright (c) 2009 - 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.
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
**/
#include "TcpMain.h"
/**
Check the integrity of the data buffer.
@param[in] DataLen The total length of the data buffer.
@param[in] FragmentCount The fragment count of the fragment table.
@param[in] FragmentTable Pointer to the fragment table of the data
buffer.
@retval EFI_SUCCESS The integrity check passed.
@retval EFI_INVALID_PARAMETER The integrity check failed.
**/
EFI_STATUS
TcpChkDataBuf (
IN UINT32 DataLen,
IN UINT32 FragmentCount,
IN EFI_TCP4_FRAGMENT_DATA *FragmentTable
)
{
UINT32 Index;
UINT32 Len;
for (Index = 0, Len = 0; Index < FragmentCount; Index++) {
Len = Len + FragmentTable[Index].FragmentLength;
}
if (DataLen != Len) {
return EFI_INVALID_PARAMETER;
}
return EFI_SUCCESS;
}
/**
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
)
{
TCP4_MODE_DATA TcpMode;
SOCKET *Sock;
if (NULL == This) {
return EFI_INVALID_PARAMETER;
}
Sock = SOCK_FROM_THIS (This);
TcpMode.Tcp4State = Tcp4State;
TcpMode.Tcp4ConfigData = Tcp4ConfigData;
TcpMode.Ip4ModeData = Ip4ModeData;
TcpMode.MnpConfigData = MnpConfigData;
TcpMode.SnpModeData = SnpModeData;
return SockGetMode (Sock, &TcpMode);
}
/**
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 were 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
)
{
EFI_TCP4_OPTION *Option;
SOCKET *Sock;
EFI_STATUS Status;
IP4_ADDR Ip;
IP4_ADDR SubnetMask;
if (NULL == This) {
return EFI_INVALID_PARAMETER;
}
//
// Tcp protocol related parameter check will be conducted here
//
if (NULL != TcpConfigData) {
CopyMem (&Ip, &TcpConfigData->AccessPoint.RemoteAddress, sizeof (IP4_ADDR));
if ((Ip != 0) && !NetIp4IsUnicast (NTOHL (Ip), 0)) {
return EFI_INVALID_PARAMETER;
}
if (TcpConfigData->AccessPoint.ActiveFlag && (0 == TcpConfigData->AccessPoint.RemotePort || (Ip == 0))) {
return EFI_INVALID_PARAMETER;
}
if (!TcpConfigData->AccessPoint.UseDefaultAddress) {
CopyMem (&Ip, &TcpConfigData->AccessPoint.StationAddress, sizeof (IP4_ADDR));
CopyMem (&SubnetMask, &TcpConfigData->AccessPoint.SubnetMask, sizeof (IP4_ADDR));
if (!NetIp4IsUnicast (NTOHL (Ip), 0) || !IP4_IS_VALID_NETMASK (NTOHL (SubnetMask))) {
return EFI_INVALID_PARAMETER;
}
}
Option = TcpConfigData->ControlOption;
if ((NULL != Option) && (Option->EnableSelectiveAck || Option->EnablePathMtuDiscovery)) {
return EFI_UNSUPPORTED;
}
}
Sock = SOCK_FROM_THIS (This);
if (NULL == TcpConfigData) {
return SockFlush (Sock);
}
Status = SockConfigure (Sock, TcpConfigData);
if (EFI_NO_MAPPING == Status) {
Sock->ConfigureState = SO_NO_MAPPING;
}
return Status;
}
/**
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
)
{
SOCKET *Sock;
TCP4_ROUTE_INFO RouteInfo;
if (NULL == This) {
return EFI_INVALID_PARAMETER;
}
Sock = SOCK_FROM_THIS (This);
RouteInfo.DeleteRoute = DeleteRoute;
IP4_COPY_ADDRESS (&RouteInfo.SubnetAddress, &SubnetAddress);
IP4_COPY_ADDRESS (&RouteInfo.SubnetMask, &SubnetMask);
IP4_COPY_ADDRESS (&RouteInfo.GatewayAddress, &GatewayAddress);
return SockRoute (Sock, &RouteInfo);
}
/**
Initiate a non-blocking 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 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
)
{
SOCKET *Sock;
if (NULL == This || NULL == ConnectionToken || NULL == ConnectionToken->CompletionToken.Event) {
return EFI_INVALID_PARAMETER;
}
Sock = SOCK_FROM_THIS (This);
return SockConnect (Sock, 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 was 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 An unexpected system or network error occurred.
**/
EFI_STATUS
EFIAPI
Tcp4Accept (
IN EFI_TCP4_PROTOCOL *This,
IN EFI_TCP4_LISTEN_TOKEN *ListenToken
)
{
SOCKET *Sock;
if (NULL == This || NULL == ListenToken || NULL == ListenToken->CompletionToken.Event) {
return EFI_INVALID_PARAMETER;
}
Sock = SOCK_FROM_THIS (This);
return SockAccept (Sock, 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
)
{
SOCKET *Sock;
EFI_STATUS Status;
if (NULL == This ||
NULL == Token ||
NULL == Token->CompletionToken.Event ||
NULL == Token->Packet.TxData ||
0 == Token->Packet.TxData->FragmentCount ||
0 == Token->Packet.TxData->DataLength
) {
return EFI_INVALID_PARAMETER;
}
Status = TcpChkDataBuf (
Token->Packet.TxData->DataLength,
Token->Packet.TxData->FragmentCount,
Token->Packet.TxData->FragmentTable
);
if (EFI_ERROR (Status)) {
return Status;
}
Sock = SOCK_FROM_THIS (This);
return SockSend (Sock, 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 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
)
{
SOCKET *Sock;
EFI_STATUS Status;
if (NULL == This ||
NULL == Token ||
NULL == Token->CompletionToken.Event ||
NULL == Token->Packet.RxData ||
0 == Token->Packet.RxData->FragmentCount ||
0 == Token->Packet.RxData->DataLength
) {
return EFI_INVALID_PARAMETER;
}
Status = TcpChkDataBuf (
Token->Packet.RxData->DataLength,
Token->Packet.RxData->FragmentCount,
Token->Packet.RxData->FragmentTable
);
if (EFI_ERROR (Status)) {
return Status;
}
Sock = SOCK_FROM_THIS (This);
return SockRcv (Sock, 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 category error not belonging to those
listed above.
**/
EFI_STATUS
EFIAPI
Tcp4Close (
IN EFI_TCP4_PROTOCOL *This,
IN EFI_TCP4_CLOSE_TOKEN *CloseToken
)
{
SOCKET *Sock;
if (NULL == This || NULL == CloseToken || NULL == CloseToken->CompletionToken.Event) {
return EFI_INVALID_PARAMETER;
}
Sock = SOCK_FROM_THIS (This);
return SockClose (Sock, CloseToken, CloseToken->AbortOnClose);
}
/**
Abort an asynchronous connection, listen, transmission or receive request.
@param[in] This Pointer to the EFI_TCP4_PROTOCOL instance.
@param[in] Token Pointer to a token that has been issued by
Connect(), Accept(), Transmit() or Receive(). If
NULL, all pending tokens issued by the four
functions listed above will be aborted.
@retval EFI_UNSUPPORTED The operation is not supported in the current
implementation.
**/
EFI_STATUS
EFIAPI
Tcp4Cancel (
IN EFI_TCP4_PROTOCOL *This,
IN EFI_TCP4_COMPLETION_TOKEN *Token OPTIONAL
)
{
return EFI_UNSUPPORTED;
}
/**
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
)
{
SOCKET *Sock;
EFI_STATUS Status;
if (NULL == This) {
return EFI_INVALID_PARAMETER;
}
Sock = SOCK_FROM_THIS (This);
Status = Sock->ProtoHandler (Sock, SOCK_POLL, NULL);
return Status;
}
/**
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 indirectly used by the TCP instance is returned.
Optional parameter that may be NULL.
@param[out] SnpModeData The buffer in which the current SNP mode data
indirectly used 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
)
{
TCP6_MODE_DATA TcpMode;
SOCKET *Sock;
if (NULL == This) {
return EFI_INVALID_PARAMETER;
}
Sock = SOCK_FROM_THIS (This);
TcpMode.Tcp6State = Tcp6State;
TcpMode.Tcp6ConfigData = Tcp6ConfigData;
TcpMode.Ip6ModeData = Ip6ModeData;
TcpMode.MnpConfigData = MnpConfigData;
TcpMode.SnpModeData = SnpModeData;
return SockGetMode (Sock, &TcpMode);
}
/**
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 initiate a three-way handshake. For a passive TCP instance,
its state transits 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. The 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 a 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
)
{
EFI_TCP6_OPTION *Option;
SOCKET *Sock;
EFI_STATUS Status;
EFI_IPv6_ADDRESS *Ip;
if (NULL == This) {
return EFI_INVALID_PARAMETER;
}
//
// Tcp protocol related parameter check will be conducted here
//
if (NULL != Tcp6ConfigData) {
Ip = &Tcp6ConfigData->AccessPoint.RemoteAddress;
if (!NetIp6IsUnspecifiedAddr (Ip) && !NetIp6IsValidUnicast (Ip)) {
return EFI_INVALID_PARAMETER;
}
if (Tcp6ConfigData->AccessPoint.ActiveFlag &&
(0 == Tcp6ConfigData->AccessPoint.RemotePort || NetIp6IsUnspecifiedAddr (Ip))
) {
return EFI_INVALID_PARAMETER;
}
Ip = &Tcp6ConfigData->AccessPoint.StationAddress;
if (!NetIp6IsUnspecifiedAddr (Ip) && !NetIp6IsValidUnicast (Ip)) {
return EFI_INVALID_PARAMETER;
}
Option = Tcp6ConfigData->ControlOption;
if ((NULL != Option) && (Option->EnableSelectiveAck || Option->EnablePathMtuDiscovery)) {
return EFI_UNSUPPORTED;
}
}
Sock = SOCK_FROM_THIS (This);
if (NULL == Tcp6ConfigData) {
return SockFlush (Sock);
}
Status = SockConfigure (Sock, Tcp6ConfigData);
if (EFI_NO_MAPPING == Status) {
Sock->ConfigureState = SO_NO_MAPPING;
}
return Status;
}
/**
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 a 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 the Tcp6StateClosed state. The
instance will transfer into Tcp6StateSynSent if the function returns EFI_SUCCESS.
If a 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 one.
- 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
)
{
SOCKET *Sock;
if (NULL == This || NULL == ConnectionToken || NULL == ConnectionToken->CompletionToken.Event) {
return EFI_INVALID_PARAMETER;
}
Sock = SOCK_FROM_THIS (This);
return SockConnect (Sock, 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, when a user aborts the listen or when a connection is reset.
This function only can be called when a 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 operation finishes.
@retval EFI_SUCCESS The listen token 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.
- 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 error not belonging to a category listed above.
**/
EFI_STATUS
EFIAPI
Tcp6Accept (
IN EFI_TCP6_PROTOCOL *This,
IN EFI_TCP6_LISTEN_TOKEN *ListenToken
)
{
SOCKET *Sock;
if (NULL == This || NULL == ListenToken || NULL == ListenToken->CompletionToken.Event) {
return EFI_INVALID_PARAMETER;
}
Sock = SOCK_FROM_THIS (This);
return SockAccept (Sock, 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 an 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 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
)
{
SOCKET *Sock;
EFI_STATUS Status;
if (NULL == This ||
NULL == Token ||
NULL == Token->CompletionToken.Event ||
NULL == Token->Packet.TxData ||
0 == Token->Packet.TxData->FragmentCount ||
0 == Token->Packet.TxData->DataLength
) {
return EFI_INVALID_PARAMETER;
}
Status = TcpChkDataBuf (
Token->Packet.TxData->DataLength,
Token->Packet.TxData->FragmentCount,
(EFI_TCP4_FRAGMENT_DATA *) Token->Packet.TxData->FragmentTable
);
if (EFI_ERROR (Status)) {
return Status;
}
Sock = SOCK_FROM_THIS (This);
return SockSend (Sock, 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 that
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 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.
- 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
)
{
SOCKET *Sock;
EFI_STATUS Status;
if (NULL == This ||
NULL == Token ||
NULL == Token->CompletionToken.Event ||
NULL == Token->Packet.RxData ||
0 == Token->Packet.RxData->FragmentCount ||
0 == Token->Packet.RxData->DataLength
) {
return EFI_INVALID_PARAMETER;
}
Status = TcpChkDataBuf (
Token->Packet.RxData->DataLength,
Token->Packet.RxData->FragmentCount,
(EFI_TCP4_FRAGMENT_DATA *) Token->Packet.RxData->FragmentTable
);
if (EFI_ERROR (Status)) {
return Status;
}
Sock = SOCK_FROM_THIS (This);
return SockRcv (Sock, 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 resource to finish the operation.
@retval EFI_DEVICE_ERROR Any unexpected error not belonging to error categories given above.
**/
EFI_STATUS
EFIAPI
Tcp6Close (
IN EFI_TCP6_PROTOCOL *This,
IN EFI_TCP6_CLOSE_TOKEN *CloseToken
)
{
SOCKET *Sock;
if (NULL == This || NULL == CloseToken || NULL == CloseToken->CompletionToken.Event) {
return EFI_INVALID_PARAMETER;
}
Sock = SOCK_FROM_THIS (This);
return SockClose (Sock, CloseToken, CloseToken->AbortOnClose);
}
/**
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_UNSUPPORTED The implementation does not support this function.
**/
EFI_STATUS
EFIAPI
Tcp6Cancel (
IN EFI_TCP6_PROTOCOL *This,
IN EFI_TCP6_COMPLETION_TOKEN *Token OPTIONAL
)
{
return EFI_UNSUPPORTED;
}
/**
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
)
{
SOCKET *Sock;
EFI_STATUS Status;
if (NULL == This) {
return EFI_INVALID_PARAMETER;
}
Sock = SOCK_FROM_THIS (This);
Status = Sock->ProtoHandler (Sock, SOCK_POLL, NULL);
return Status;
}
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