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Insert comments for functions/macros and add the file headers.

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git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@7293 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
niry
2009-01-16 06:56:18 +00:00
parent bd59b46eb4
commit dab714aa11
23 changed files with 1220 additions and 605 deletions
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538
MdeModulePkg/Universal/Network/Mtftp4Dxe/Mtftp4Impl.c
View File

@@ -1,50 +1,41 @@
/** @file
Copyright (c) 2006 - 2007, Intel Corporation
Interface routine for Mtftp4.
Copyright (c) 2006 - 2007, Intel Corporation<BR>
All rights reserved. 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
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.
Module Name:
Mtftp4Impl.c
Abstract:
Interface routine for Mtftp4
**/
#include "Mtftp4Impl.h"
EFI_STATUS
EFIAPI
EfiMtftp4ReadFile (
IN EFI_MTFTP4_PROTOCOL *This,
IN EFI_MTFTP4_TOKEN *Token
);
/**
Get the current operation parameter for the MTFTP session
Reads the current operational settings.
@param This The MTFTP protocol instance
@param ModeData The MTFTP mode data
The GetModeData()function reads the current operational settings of this
EFI MTFTPv4 Protocol driver instance.
@retval EFI_INVALID_PARAMETER This or ModeData is NULL
@retval EFI_SUCCESS The operation parameter is saved in ModeData
@param This Pointer to the EFI_MTFTP4_PROTOCOL instance.
@param ModeData Pointer to storage for the EFI MTFTPv4 Protocol
driver mode data.
@retval EFI_SUCCESS The configuration data was successfully returned.
@retval EFI_OUT_OF_RESOURCES The required mode data could not be allocated.
@retval EFI_INVALID_PARAMETER This is NULL or ModeData is NULL.
**/
EFI_STATUS
EFIAPI
EfiMtftp4GetModeData (
IN EFI_MTFTP4_PROTOCOL *This,
OUT EFI_MTFTP4_MODE_DATA *ModeData
IN EFI_MTFTP4_PROTOCOL *This,
OUT EFI_MTFTP4_MODE_DATA *ModeData
)
{
MTFTP4_PROTOCOL *Instance;
@@ -75,14 +66,11 @@ EfiMtftp4GetModeData (
@param Instance The MTFTP session to clean up
@param Result The result to return to the caller who initiated
the operation.
@return None
**/
VOID
Mtftp4CleanOperation (
IN MTFTP4_PROTOCOL *Instance,
IN EFI_STATUS Result
IN OUT MTFTP4_PROTOCOL *Instance,
IN EFI_STATUS Result
)
{
LIST_ENTRY *Entry;
@@ -145,15 +133,50 @@ Mtftp4CleanOperation (
/**
Configure the MTFTP session for new operation or reset the current
operation if ConfigData is NULL.
Initializes, changes, or resets the default operational setting for this
EFI MTFTPv4 Protocol driver instance.
The Configure() function is used to set and change the configuration data for
this EFI MTFTPv4 Protocol driver instance. The configuration data can be reset
to startup defaults by calling Configure() with MtftpConfigData set to NULL.
Whenever the instance is reset, any pending operation is aborted. By changing
the EFI MTFTPv4 Protocol driver instance configuration data, the client can
connect to different MTFTPv4 servers. The configuration parameters in
MtftpConfigData are used as the default parameters in later MTFTPv4 operations
and can be overridden in later operations.
@param This Pointer to the EFI_MTFTP4_PROTOCOL instance
@param ConfigData MtftpConfigDataPointer to the configuration data
structure
@param This The MTFTP session to configure
@param ConfigData The configure parameters
@retval EFI_INVALID_PARAMETER Some of the parameter is invalid.
@retval EFI_ACCESS_DENIED There is pending operation
@retval EFI_SUCCESS The instance is configured for operation.
@retval EFI_SUCCESS The EFI MTFTPv4 Protocol driver was configured
successfully.
@retval EFI_INVALID_PARAMETER One or more following conditions are TRUE:
1.This is NULL.
2.MtftpConfigData.UseDefaultSetting is FALSE and
MtftpConfigData.StationIp is not a valid IPv4
unicast address.
3.MtftpCofigData.UseDefaultSetting is FALSE and
MtftpConfigData.SubnetMask is invalid.
4.MtftpCofigData.ServerIp is not a valid IPv4
unicast address.
5.MtftpConfigData.UseDefaultSetting is FALSE and
MtftpConfigData.GatewayIp is not a valid IPv4
unicast address or is not in the same subnet
with station address.
@retval EFI_ACCESS_DENIED The EFI configuration could not be changed at this
time because there is one MTFTP background operation
in progress.
@retval EFI_NO_MAPPING When using a default address, configuration
(DHCP, BOOTP, RARP, etc.) has not finished yet.
@retval EFI_UNSUPPORTED A configuration protocol (DHCP, BOOTP, RARP, etc.)
could not be located when clients choose to use
the default address settings.
@retval EFI_OUT_OF_RESOURCES The EFI MTFTPv4 Protocol driver instance data could
not be allocated.
@retval EFI_DEVICE_ERROR An unexpected system or network error occurred.
The EFI MTFTPv4 Protocol driver instance is not
configured.
**/
EFI_STATUS
@@ -213,7 +236,7 @@ EfiMtftp4Configure (
}
if ((Gateway != 0) &&
(!IP4_NET_EQUAL (Gateway, Ip, Netmask) || !Ip4IsUnicast (Gateway, Netmask))) {
(!IP4_NET_EQUAL (Gateway, Ip, Netmask) || !Ip4IsUnicast (Gateway, Netmask))) {
return EFI_INVALID_PARAMETER;
}
@@ -236,9 +259,10 @@ EfiMtftp4Configure (
/**
Check packet for GetInfo. GetInfo is implemented with EfiMtftp4ReadFile.
It use Mtftp4GetInfoCheckPacket to inspect the first packet from server,
then abort the session.
Check packet for GetInfo.
GetInfo is implemented with EfiMtftp4ReadFile. It use Mtftp4GetInfoCheckPacket
to inspect the first packet from server, then abort the session.
@param This The MTFTP4 protocol instance
@param Token The user's token
@@ -300,108 +324,43 @@ Mtftp4GetInfoCheckPacket (
/**
Get the information of the download from the server. It is implemented
with EfiMtftp4ReadFile: build a token, then pass it to EfiMtftp4ReadFile.
In its check packet callback abort the opertions.
Parses the options in an MTFTPv4 OACK packet.
The ParseOptions() function parses the option fields in an MTFTPv4 OACK packet
and returns the number of options that were found and optionally a list of
pointers to the options in the packet.
If one or more of the option fields are not valid, then EFI_PROTOCOL_ERROR is
returned and *OptionCount and *OptionList stop at the last valid option.
The OptionList is allocated by this function, and caller should free it when used.
@param This The MTFTP protocol instance
@param OverrideData The MTFTP override data
@param Filename The file to get information
@param ModeStr The mode to use
@param OptionCount The number of options to append
@param OptionList The options to append
@param PacketLength The variable to receive the packet length
@param Packet The variable to receive the packet.
@param This Pointer to the EFI_MTFTP4_PROTOCOL instance.
@param PacketLen Length of the OACK packet to be parsed.
@param Packet Pointer to the OACK packet to be parsed.
@param OptionCount Pointer to the number of options in following OptionList.
@param OptionList Pointer to EFI_MTFTP4_OPTION storage. Call the
EFI Boot Service FreePool() to release theOptionList
if the options in this OptionList are not needed
any more
@retval EFI_INVALID_PARAMETER The parameter is invaid
@retval EFI_SUCCESS The information is got
@retval Others Failed to get the information.
**/
EFI_STATUS
EFIAPI
EfiMtftp4GetInfo (
IN EFI_MTFTP4_PROTOCOL *This,
IN EFI_MTFTP4_OVERRIDE_DATA *OverrideData, OPTIONAL
IN UINT8 *Filename,
IN UINT8 *ModeStr, OPTIONAL
IN UINT8 OptionCount,
IN EFI_MTFTP4_OPTION *OptionList,
OUT UINT32 *PacketLength,
OUT EFI_MTFTP4_PACKET **Packet OPTIONAL
)
{
EFI_MTFTP4_TOKEN Token;
MTFTP4_PROTOCOL *Instance;
MTFTP4_GETINFO_STATE *State;
EFI_STATUS Status;
if ((This == NULL) || (Filename == NULL) || (PacketLength == NULL) ||
(OptionCount && (OptionList == NULL))) {
return EFI_INVALID_PARAMETER;
}
if (Packet != NULL) {
*Packet = NULL;
}
*PacketLength = 0;
Instance = MTFTP4_PROTOCOL_FROM_THIS (This);
State = &Instance->GetInfoState;
State->Packet = Packet;
State->PacketLen = PacketLength;
State->Status = EFI_SUCCESS;
//
// Fill in the Token to issue an synchronous ReadFile operation
//
Token.Status = EFI_SUCCESS;
Token.Event = NULL;
Token.OverrideData = OverrideData;
Token.Filename = Filename;
Token.ModeStr = ModeStr;
Token.OptionCount = OptionCount;
Token.OptionList = OptionList;
Token.BufferSize = 0;
Token.Buffer = NULL;
Token.CheckPacket = Mtftp4GetInfoCheckPacket;
Token.TimeoutCallback = NULL;
Token.PacketNeeded = NULL;
Status = EfiMtftp4ReadFile (This, &Token);
if (EFI_ABORTED == Status) {
return State->Status;
}
return Status;
}
/**
Parse the packet into an array of options. The OptionList is allocated
by this function, and caller should free it when used.
@param This The MTFTP protocol instance
@param PacketLen The length of the packet
@param Packet The packet to parse
@param OptionCount The size of the OptionList array allocated.
@param OptionList The allocated option array to save the option
addresses.
@retval EFI_INVALID_PARAMETER The parameters are invalid.
@retval EFI_NOT_FOUND There is no valid option in the packet
@retval EFI_SUCCESS The packet is parsed.
@retval EFI_SUCCESS The OACK packet was valid and the OptionCount and
OptionList parameters have been updated.
@retval EFI_INVALID_PARAMETER One or more of the following conditions is TRUE:
1.PacketLen is 0.
2.Packet is NULL or Packet is not a valid MTFTPv4 packet.
3.OptionCount is NULL.
@retval EFI_NOT_FOUND No options were found in the OACK packet.
@retval EFI_OUT_OF_RESOURCES Storage for the OptionList array cannot be allocated.
@retval EFI_PROTOCOL_ERROR One or more of the option fields is invalid.
**/
EFI_STATUS
EFIAPI
EfiMtftp4ParseOptions (
IN EFI_MTFTP4_PROTOCOL *This,
IN UINT32 PacketLen,
IN EFI_MTFTP4_PACKET *Packet,
IN OUT UINT32 *OptionCount,
OUT EFI_MTFTP4_OPTION **OptionList OPTIONAL
IN EFI_MTFTP4_PROTOCOL *This,
IN UINT32 PacketLen,
IN EFI_MTFTP4_PACKET *Packet,
OUT UINT32 *OptionCount,
OUT EFI_MTFTP4_OPTION **OptionList OPTIONAL
)
{
EFI_STATUS Status;
@@ -427,16 +386,18 @@ EfiMtftp4ParseOptions (
/**
Check whether the override data is valid. It will first
validate whether the server is a valid unicast. If a gateway
is provided in the Override, it also check that it is a
unicast on the connected network.
Check whether the override data is valid.
It will first validate whether the server is a valid unicast. If a gateway
is provided in the Override, it also check that it is a unicast on the
connected network.
@param Instance The MTFTP instance
@param Override The override data to validate.
@return TRUE if the override data is valid, otherwise FALSE.
@retval TRUE The override data is valid
@retval FALSE The override data is invalid
**/
BOOLEAN
Mtftp4OverrideValid (
@@ -477,16 +438,18 @@ Mtftp4OverrideValid (
/**
Poll the UDP to get the IP4 default address, which may be retrieved
by DHCP. The default time out value is 5 seconds. If IP has retrieved
the default address, the UDP is reconfigured.
by DHCP.
The default time out value is 5 seconds. If IP has retrieved the default address,
the UDP is reconfigured.
@param Instance The Mtftp instance
@param UdpPort The UDP port to poll
@param UdpCfgData The UDP configure data to reconfigure the UDP
port.
@return TRUE if the default address is retrieved and UDP is reconfigured.
@return Otherwise FALSE.
@retval TRUE The default address is retrieved and UDP is reconfigured.
@retval FALSE Some error occured.
**/
BOOLEAN
@@ -781,15 +744,32 @@ ON_ERROR:
/**
Read a file from the server.
Downloads a file from an MTFTPv4 server.
The ReadFile() function is used to initialize and start an MTFTPv4 download
process and optionally wait for completion. When the download operation completes,
whether successfully or not, the Token.Status field is updated by the EFI MTFTPv4
Protocol driver and then Token.Event is signaled (if it is not NULL).
Data can be downloaded from the MTFTPv4 server into either of the following locations:
1.A fixed buffer that is pointed to by Token.Buffer
2.A download service function that is pointed to by Token.CheckPacket
If both Token.Buffer and Token.CheckPacket are used, then Token.CheckPacket
will be called first. If the call is successful, the packet will be stored in
Token.Buffer.
@param This The Mtftp protocol instance.
@param Token The user's request wrap token.
@param This Pointer to the EFI_MTFTP4_PROTOCOL instance
@param Token Pointer to the token structure to provide the
parameters that are used in this operation.
@retval EFI_SUCCESS The ReadFile has finished, the file has been
downloaded if it is synchronous operation,
otherwise it has been initated.
@retval Others Some error happened.
@retval EFI_SUCCESS The data file has been transferred successfully.
@retval EFI_OUT_OF_RESOURCES Required system resources could not be allocated.
@retval EFI_BUFFER_TOO_SMALL BufferSize is not large enough to hold the downloaded
data in downloading process.
@retval EFI_ABORTED Current operation is aborted by user.
@retval EFI_ICMP_ERROR An ICMP ERROR packet was received.
@retval EFI_TIMEOUT No responses were received from the MTFTPv4 server.
@retval EFI_TFTP_ERROR An MTFTPv4 ERROR packet was received.
@retval EFI_DEVICE_ERROR An unexpected network error or system error occurred.
**/
EFI_STATUS
@@ -804,15 +784,53 @@ EfiMtftp4ReadFile (
/**
Upload a file to the server.
Sends a data file to an MTFTPv4 server. May be unsupported in some EFI implementations
@param This The MTFTP protocol session
@param Token The user's request wrap token.
The WriteFile() function is used to initialize an uploading operation with the
given option list and optionally wait for completion. If one or more of the
options is not supported by the server, the unsupported options are ignored and
a standard TFTP process starts instead. When the upload process completes,
whether successfully or not, Token.Event is signaled, and the EFI MTFTPv4 Protocol
driver updates Token.Status.
The caller can supply the data to be uploaded in the following two modes:
1.Through the user-provided buffer
2.Through a callback function
With the user-provided buffer, the Token.BufferSize field indicates the length
of the buffer, and the driver will upload the data in the buffer. With an
EFI_MTFTP4_PACKET_NEEDED callback function, the driver will call this callback
function to get more data from the user to upload. See the definition of
EFI_MTFTP4_PACKET_NEEDED for more information. These two modes cannot be used at
the same time. The callback function will be ignored if the user provides the buffer.
@retval EFI_SUCCESS The WriteFile has finished, the file has been
uploaded if it is synchronous operation, otherwise
it has been initated.
@retval Others Some error happened.
@param This Pointer to the EFI_MTFTP4_PROTOCOL instance.
@param Token Pointer to the token structure to provide the
parameters that are used in this function
@retval EFI_SUCCESS The upload session has started.
@retval EFI_UNSUPPORTED The operation is not supported by this implementation.
@retval EFI_INVALID_PARAMETER One or more of the following conditions is TRUE:
1. This is NULL.
2. Token is NULL.
3. Token.Filename is NULL.
4. Token.OptionCount is not zero and
Token.OptionList is NULL.
5. One or more options in Token.OptionList have wrong
format.
6. Token.Buffer and Token.PacketNeeded are both
NULL.
7. One or more IPv4 addresses in Token.OverrideData
are not valid unicast IPv4 addresses if
Token.OverrideData is not NULL.
@retval EFI_UNSUPPORTED One or more options in the Token.OptionList are in the
unsupported list of structure EFI_MTFTP4_MODE_DATA.
@retval EFI_NOT_STARTED The EFI MTFTPv4 Protocol driver has not been started.
@retval EFI_NO_MAPPING When using a default address, configuration (DHCP,
BOOTP, RARP, etc.) is not finished yet.
@retval EFI_ALREADY_STARTED This Token is already being used in another MTFTPv4
session.
@retval EFI_OUT_OF_RESOURCES Required system resources could not be allocated.
@retval EFI_ACCESS_DENIED The previous operation has not completed yet.
@retval EFI_DEVICE_ERROR An unexpected network error or system error occurred.
**/
EFI_STATUS
@@ -827,16 +845,62 @@ EfiMtftp4WriteFile (
/**
Read a directory from the server. The only difference
between ReadFile and ReadDirectory is the opcode used.
Downloads a data file "directory" from an MTFTPv4 server.
May be unsupported in some EFI implementations
The ReadDirectory() function is used to return a list of files on the MTFTPv4
server that are logically (or operationally) related to Token.Filename. The
directory request packet that is sent to the server is built with the option
list that was provided by caller, if present.
The file information that the server returns is put into either of the following
locations:
1.A fixed buffer that is pointed to by Token.Buffer
2.A download service function that is pointed to by Token.CheckPacket
If both Token.Buffer and Token.CheckPacket are used, then Token.CheckPacket will
be called first. If the call is successful, the packet will be stored in Token.Buffer.
The returned directory listing in the Token.Buffer or EFI_MTFTP4_PACKET consists
of a list of two or three variable-length ASCII strings, each terminated by a
null character, for each file in the directory. If the multicast option is involved,
the first field of each directory entry is the static multicast IP address and
UDP port number that is associated with the file name. The format of the field
is ip:ip:ip:ip:port. If the multicast option is not involved, this field and its
terminating null character are not present.
The next field of each directory entry is the file name and the last field is
the file information string. The information string contains the file size and
the create/modify timestamp. The format of the information string is filesize
yyyy-mm-dd hh:mm:ss:ffff. The timestamp is Coordinated Universal Time
(UTC; also known as Greenwich Mean Time [GMT]).
The only difference between ReadFile and ReadDirectory is the opcode used.
@param This The MTFTP protocol session
@param Token The user's request wrap token.
@param This Pointer to the EFI_MTFTP4_PROTOCOL instance
@param Token Pointer to the token structure to provide the
parameters that are used in this function
@retval EFI_SUCCESS The ReadDirectory has finished, the directory has
been downloaded as a file if it is synchronous
operation, otherwise it has been initated.
@retval Others Some error happened.
@retval EFI_SUCCESS The MTFTPv4 related file "directory" has been downloaded.
@retval EFI_UNSUPPORTED The operation is not supported by this implementation.
@retval EFI_INVALID_PARAMETER One or more of the following conditions is TRUE:
1. This is NULL.
2. Token is NULL.
3. Token.Filename is NULL.
4. Token.OptionCount is not zero and
Token.OptionList is NULL.
5. One or more options in Token.OptionList have wrong
format.
6. Token.Buffer and Token.PacketNeeded are both
NULL.
7. One or more IPv4 addresses in Token.OverrideData
are not valid unicast IPv4 addresses if
Token.OverrideData is not NULL.
@retval EFI_UNSUPPORTED One or more options in the Token.OptionList are in the
unsupported list of structure EFI_MTFTP4_MODE_DATA.
@retval EFI_NOT_STARTED The EFI MTFTPv4 Protocol driver has not been started.
@retval EFI_NO_MAPPING When using a default address, configuration (DHCP,
BOOTP, RARP, etc.) is not finished yet.
@retval EFI_ALREADY_STARTED This Token is already being used in another MTFTPv4
session.
@retval EFI_OUT_OF_RESOURCES Required system resources could not be allocated.
@retval EFI_ACCESS_DENIED The previous operation has not completed yet.
@retval EFI_DEVICE_ERROR An unexpected network error or system error occurred.
**/
EFI_STATUS
@@ -851,13 +915,139 @@ EfiMtftp4ReadDirectory (
/**
Poll the network stack to accelerate the packet process.
Gets information about a file from an MTFTPv4 server.
The GetInfo() function assembles an MTFTPv4 request packet with options;
sends it to the MTFTPv4 server; and may return an MTFTPv4 OACK, MTFTPv4 ERROR,
or ICMP ERROR packet. Retries occur only if no response packets are received
from the MTFTPv4 server before the timeout expires.
It is implemented with EfiMtftp4ReadFile: build a token, then pass it to
EfiMtftp4ReadFile. In its check packet callback abort the opertions.
@param This The MTFTP protocol instance.
@param This Pointer to the EFI_MTFTP4_PROTOCOL instance
@param OverrideData Data that is used to override the existing
parameters. If NULL, the default parameters that
were set in the EFI_MTFTP4_PROTOCOL.Configure()
function are used
@param Filename Pointer to ASCIIZ file name string
@param ModeStr Pointer to ASCIIZ mode string. If NULL, "octet"
will be used
@param OptionCount Number of option/value string pairs in OptionList
@param OptionList Pointer to array of option/value string pairs.
Ignored if OptionCount is zero
@param PacketLength The number of bytes in the returned packet
@param Packet PacketThe pointer to the received packet. This
buffer must be freed by the caller.
@retval EFI_SUCCESS An MTFTPv4 OACK packet was received and is in
the Buffer.
@retval EFI_INVALID_PARAMETER One or more of the following conditions is TRUE:
1.This is NULL.
2.Filename is NULL.
3.OptionCount is not zero and OptionList is NULL.
4.One or more options in OptionList have wrong format.
5.PacketLength is NULL.
6.One or more IPv4 addresses in OverrideData are
not valid unicast IPv4 addresses if OverrideData
is not NULL.
@retval EFI_UNSUPPORTED One or more options in the OptionList are in the
unsupported list of structure EFI_MTFTP4_MODE_DATA
@retval EFI_NOT_STARTED The EFI MTFTPv4 Protocol driver has not been started.
@retval EFI_NO_MAPPING When using a default address, configuration (DHCP,
BOOTP, RARP, etc.) has not finished yet.
@retval EFI_ACCESS_DENIED The previous operation has not completed yet.
@retval EFI_OUT_OF_RESOURCES Required system resources could not be allocated.
@retval EFI_TFTP_ERROR An MTFTPv4 ERROR packet was received and is in
the Buffer.
@retval EFI_ICMP_ERROR An ICMP ERROR packet was received and the Packet
is set to NULL.
@retval EFI_PROTOCOL_ERROR An unexpected MTFTPv4 packet was received and is
in the Buffer.
@retval EFI_TIMEOUT No responses were received from the MTFTPv4 server.
@retval EFI_DEVICE_ERROR An unexpected network error or system error occurred.
**/
EFI_STATUS
EFIAPI
EfiMtftp4GetInfo (
IN EFI_MTFTP4_PROTOCOL *This,
IN EFI_MTFTP4_OVERRIDE_DATA *OverrideData OPTIONAL,
IN UINT8 *Filename,
IN UINT8 *ModeStr OPTIONAL,
IN UINT8 OptionCount,
IN EFI_MTFTP4_OPTION *OptionList OPTIONAL,
OUT UINT32 *PacketLength,
OUT EFI_MTFTP4_PACKET **Packet OPTIONAL
)
{
EFI_MTFTP4_TOKEN Token;
MTFTP4_PROTOCOL *Instance;
MTFTP4_GETINFO_STATE *State;
EFI_STATUS Status;
if ((This == NULL) || (Filename == NULL) || (PacketLength == NULL) ||
((OptionCount != 0) && (OptionList == NULL))) {
return EFI_INVALID_PARAMETER;
}
if (Packet != NULL) {
*Packet = NULL;
}
*PacketLength = 0;
Instance = MTFTP4_PROTOCOL_FROM_THIS (This);
State = &Instance->GetInfoState;
State->Packet = Packet;
State->PacketLen = PacketLength;
State->Status = EFI_SUCCESS;
//
// Fill in the Token to issue an synchronous ReadFile operation
//
Token.Status = EFI_SUCCESS;
Token.Event = NULL;
Token.OverrideData = OverrideData;
Token.Filename = Filename;
Token.ModeStr = ModeStr;
Token.OptionCount = OptionCount;
Token.OptionList = OptionList;
Token.BufferSize = 0;
Token.Buffer = NULL;
Token.CheckPacket = Mtftp4GetInfoCheckPacket;
Token.TimeoutCallback = NULL;
Token.PacketNeeded = NULL;
Status = EfiMtftp4ReadFile (This, &Token);
if (EFI_ABORTED == Status) {
return State->Status;
}
return Status;
}
/**
Polls for incoming data packets and processes outgoing data packets.
The Poll() function can be used by network drivers and applications to increase
the rate that data packets are moved between the communications device and the
transmit and receive queues.
In some systems, the periodic timer event in the managed network driver may not
poll the underlying communications device fast enough to transmit and/or receive
all data packets without missing incoming packets or dropping outgoing packets.
Drivers and applications that are experiencing packet loss should try calling
the Poll() function more often.
@param This Pointer to the EFI_MTFTP4_PROTOCOL instance
@retval EFI_SUCCESS Incoming or outgoing data was processed.
@retval EFI_NOT_STARTED This EFI MTFTPv4 Protocol instance has not been started.
@retval EFI_NO_MAPPING When using a default address, configuration (DHCP,
BOOTP, RARP, etc.) is not finished yet.
@retval EFI_INVALID_PARAMETER This is NULL.
@retval EFI_NOT_STARTED The MTFTP session hasn't been configured.
@retval EFI_DEVICE_ERROR The MTFTP session has been destoried.
@retval EFI_DEVICE_ERROR An unexpected system or network error occurred.
@retval EFI_TIMEOUT Data was dropped out of the transmit and/or receive
queue. Consider increasing the polling rate.
**/
EFI_STATUS