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- /** @file
- This EFI_MTFTP6_PROTOCOL interface implementation.
- It supports the following RFCs:
- RFC1350 - THE TFTP PROTOCOL (REVISION 2)
- RFC2090 - TFTP Multicast Option
- RFC2347 - TFTP Option Extension
- RFC2348 - TFTP Blocksize Option
- RFC2349 - TFTP Timeout Interval and Transfer Size Options
- Copyright (c) 2009 - 2012, Intel Corporation. All rights reserved.<BR>
- SPDX-License-Identifier: BSD-2-Clause-Patent
- **/
- #include "Mtftp6Impl.h"
- EFI_MTFTP6_PROTOCOL gMtftp6ProtocolTemplate = {
- EfiMtftp6GetModeData,
- EfiMtftp6Configure,
- EfiMtftp6GetInfo,
- EfiMtftp6ParseOptions,
- EfiMtftp6ReadFile,
- EfiMtftp6WriteFile,
- EfiMtftp6ReadDirectory,
- EfiMtftp6Poll
- };
- /**
- Returns the current operating mode data for the MTFTP6 instance.
- The GetModeData() function returns the current operating mode and
- cached data packet for the MTFTP6 instance.
- @param[in] This Pointer to the EFI_MTFTP6_PROTOCOL instance.
- @param[out] ModeData The buffer in which the EFI MTFTPv6 Protocol driver mode
- data is returned.
- @retval EFI_SUCCESS The configuration data was returned successfully.
- @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
- EfiMtftp6GetModeData (
- IN EFI_MTFTP6_PROTOCOL *This,
- OUT EFI_MTFTP6_MODE_DATA *ModeData
- )
- {
- MTFTP6_INSTANCE *Instance;
- EFI_TPL OldTpl;
- if ((This == NULL) || (ModeData == NULL)) {
- return EFI_INVALID_PARAMETER;
- }
- OldTpl = gBS->RaiseTPL (TPL_CALLBACK);
- Instance = MTFTP6_INSTANCE_FROM_THIS (This);
- //
- // Copy back the configure data if the instance already configured.
- //
- if (Instance->Config != NULL) {
- CopyMem (
- &ModeData->ConfigData,
- Instance->Config,
- sizeof (EFI_MTFTP6_CONFIG_DATA)
- );
- } else {
- ZeroMem (
- &ModeData->ConfigData,
- sizeof (EFI_MTFTP6_CONFIG_DATA)
- );
- }
- //
- // Set the current support options in mode data.
- //
- ModeData->SupportedOptionCount = MTFTP6_SUPPORTED_OPTIONS_NUM;
- ModeData->SupportedOptions = (UINT8 **)mMtftp6SupportedOptions;
- gBS->RestoreTPL (OldTpl);
- return EFI_SUCCESS;
- }
- /**
- Initializes, changes, or resets the default operational setting for
- this EFI MTFTPv6 Protocol driver instance.
- The Configure() function is used to set and change the configuration
- data for this EFI MTFTPv6 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 MTFTPv6 Protocol
- driver instance configuration data, the client can connect to
- different MTFTPv6 servers. The configuration parameters in
- MtftpConfigData are used as the default parameters in later MTFTPv6
- operations and can be overridden in later operations.
- @param[in] This Pointer to the EFI_MTFTP6_PROTOCOL instance.
- @param[in] MtftpConfigData Pointer to the configuration data structure.
- @retval EFI_SUCCESS The EFI MTFTPv6 Protocol instance was configured successfully.
- @retval EFI_INVALID_PARAMETER One or more following conditions are TRUE:
- - This is NULL.
- - MtftpConfigData.StationIp is neither zero nor one
- of the configured IP addresses in the underlying IPv6 driver.
- - MtftpConfigData.ServerIp is not a valid IPv6 unicast address.
- Note: It does not match the UEFI 2.3 Specification.
- @retval EFI_ACCESS_DENIED - The configuration could not be changed at this time because there
- is some MTFTP background operation in progress.
- - MtftpConfigData.LocalPort is already in use.
- Note: It does not match the UEFI 2.3 Specification.
- @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_OUT_OF_RESOURCES The EFI MTFTPv6 Protocol driver instance data could not be
- allocated.
- Note: It is not defined in the UEFI 2.3 Specification.
- @retval EFI_DEVICE_ERROR An unexpected system or network error occurred. The EFI
- MTFTPv6 Protocol driver instance is not configured.
- Note: It is not defined in the UEFI 2.3 Specification.
- **/
- EFI_STATUS
- EFIAPI
- EfiMtftp6Configure (
- IN EFI_MTFTP6_PROTOCOL *This,
- IN EFI_MTFTP6_CONFIG_DATA *MtftpConfigData OPTIONAL
- )
- {
- MTFTP6_SERVICE *Service;
- MTFTP6_INSTANCE *Instance;
- EFI_UDP6_PROTOCOL *Udp6;
- EFI_UDP6_CONFIG_DATA Udp6Cfg;
- EFI_STATUS Status;
- EFI_TPL OldTpl;
- if (This == NULL) {
- return EFI_INVALID_PARAMETER;
- }
- if ((MtftpConfigData != NULL) && !NetIp6IsValidUnicast (&MtftpConfigData->ServerIp)) {
- return EFI_INVALID_PARAMETER;
- }
- OldTpl = gBS->RaiseTPL (TPL_CALLBACK);
- Instance = MTFTP6_INSTANCE_FROM_THIS (This);
- Service = Instance->Service;
- Status = EFI_SUCCESS;
- if (MtftpConfigData == NULL) {
- //
- // Configure the instance as NULL to abort the current session.
- //
- Mtftp6OperationClean (Instance, EFI_ABORTED);
- FreePool (Instance->Config);
- Instance->Config = NULL;
- } else {
- //
- // It's not allowed to configure one instance twice without configure null.
- //
- if (Instance->Config != NULL) {
- Status = EFI_ACCESS_DENIED;
- goto ON_EXIT;
- }
- //
- // Allocate the configure buffer of the instance and store the user's data.
- //
- Instance->Config = AllocateZeroPool (sizeof (EFI_MTFTP6_CONFIG_DATA));
- if (Instance->Config == NULL) {
- Status = EFI_OUT_OF_RESOURCES;
- goto ON_EXIT;
- }
- CopyMem (Instance->Config, MtftpConfigData, sizeof (EFI_MTFTP6_CONFIG_DATA));
- //
- // Don't configure the udpio here because each operation might override
- // the configuration, so delay udpio configuration in each operation.
- //
- if (Instance->UdpIo == NULL) {
- Instance->UdpIo = UdpIoCreateIo (
- Service->Controller,
- Service->Image,
- Mtftp6ConfigDummyUdpIo,
- UDP_IO_UDP6_VERSION,
- NULL
- );
- if (Instance->UdpIo != NULL) {
- Status = gBS->OpenProtocol (
- Instance->UdpIo->UdpHandle,
- &gEfiUdp6ProtocolGuid,
- (VOID **)&Udp6,
- Service->Image,
- Instance->Handle,
- EFI_OPEN_PROTOCOL_BY_CHILD_CONTROLLER
- );
- if (EFI_ERROR (Status)) {
- goto ON_EXIT;
- }
- }
- }
- if (Instance->UdpIo == NULL) {
- Status = EFI_OUT_OF_RESOURCES;
- goto ON_EXIT;
- }
- //
- // Continue to configure the downside Udp6 instance by user's data.
- //
- ZeroMem (&Udp6Cfg, sizeof (EFI_UDP6_CONFIG_DATA));
- Udp6Cfg.AcceptPromiscuous = FALSE;
- Udp6Cfg.AcceptAnyPort = FALSE;
- Udp6Cfg.AllowDuplicatePort = FALSE;
- Udp6Cfg.TrafficClass = 0;
- Udp6Cfg.HopLimit = 128;
- Udp6Cfg.ReceiveTimeout = 0;
- Udp6Cfg.TransmitTimeout = 0;
- Udp6Cfg.StationPort = Instance->Config->LocalPort;
- Udp6Cfg.RemotePort = Instance->Config->InitialServerPort;
- CopyMem (
- &Udp6Cfg.StationAddress,
- &Instance->Config->StationIp,
- sizeof (EFI_IPv6_ADDRESS)
- );
- CopyMem (
- &Udp6Cfg.RemoteAddress,
- &Instance->Config->ServerIp,
- sizeof (EFI_IPv6_ADDRESS)
- );
- Udp6 = Instance->UdpIo->Protocol.Udp6;
- Status = Udp6->Configure (Udp6, &Udp6Cfg);
- if (EFI_ERROR (Status)) {
- goto ON_EXIT;
- }
- }
- ON_EXIT:
- if (EFI_ERROR (Status)) {
- if (Instance->Config != NULL) {
- FreePool (Instance->Config);
- Instance->Config = NULL;
- }
- if (Instance->UdpIo != NULL) {
- UdpIoFreeIo (Instance->UdpIo);
- Instance->UdpIo = NULL;
- }
- }
- gBS->RestoreTPL (OldTpl);
- return Status;
- }
- /**
- Get the information of the download from the server.
- The GetInfo() function assembles an MTFTPv6 request packet
- with options, sends it to the MTFTPv6 server, and may return
- an MTFTPv6 OACK, MTFTPv6 ERROR, or ICMP ERROR packet. Retries
- occur only if no response packets are received from the MTFTPv6
- server before the timeout expires.
- @param[in] This Pointer to the EFI_MTFTP6_PROTOCOL instance.
- @param[in] OverrideData Data that is used to override the existing parameters. If NULL, the
- default parameters that were set in the EFI_MTFTP6_PROTOCOL.Configure()
- function are used.
- @param[in] Filename Pointer to null-terminated ASCII file name string.
- @param[in] ModeStr Pointer to null-terminated ASCII mode string. If NULL, octet will be used.
- @param[in] OptionCount Number of option/value string pairs in OptionList.
- @param[in] OptionList Pointer to array of option/value string pairs. Ignored if
- OptionCount is zero.
- @param[out] PacketLength The number of bytes in the returned packet.
- @param[out] Packet The pointer to the received packet. This buffer must be freed by
- the caller.
- @retval EFI_SUCCESS An MTFTPv6 OACK packet was received and is in the Packet.
- Note: It does not match the UEFI 2.3 Specification.
- @retval EFI_INVALID_PARAMETER One or more of the following conditions is TRUE:
- - This is NULL.
- - Filename is NULL.
- - OptionCount is not zero and OptionList is NULL.
- - One or more options in OptionList have wrong format.
- - PacketLength is NULL.
- - OverrideData.ServerIp is not valid unicast IPv6 addresses.
- @retval EFI_UNSUPPORTED One or more options in the OptionList are unsupported by
- this implementation.
- @retval EFI_NOT_STARTED The EFI MTFTPv6 Protocol driver has not been started.
- @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_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 MTFTPv6 ERROR packet was received and is in the Packet.
- @retval EFI_NETWORK_UNREACHABLE An ICMP network unreachable error packet was received and the Packet is set to NULL.
- Note: It is not defined in UEFI 2.3 Specification.
- @retval EFI_HOST_UNREACHABLE An ICMP host unreachable error packet was received and the Packet is set to NULL.
- Note: It is not defined in the UEFI 2.3 Specification.
- @retval EFI_PROTOCOL_UNREACHABLE An ICMP protocol unreachable error packet was received and the Packet is set to NULL.
- Note: It is not defined in the UEFI 2.3 Specification.
- @retval EFI_PORT_UNREACHABLE An ICMP port unreachable error packet was received and the Packet is set to NULL.
- @retval EFI_ICMP_ERROR Some other ICMP ERROR packet was received and the Packet is set to NULL.
- Note: It does not match the UEFI 2.3 Specification.
- @retval EFI_PROTOCOL_ERROR An unexpected MTFTPv6 packet was received and is in the Packet.
- @retval EFI_TIMEOUT No responses were received from the MTFTPv6 server.
- @retval EFI_DEVICE_ERROR An unexpected network error or system error occurred.
- @retval EFI_NO_MEDIA There was a media error.
- **/
- EFI_STATUS
- EFIAPI
- EfiMtftp6GetInfo (
- IN EFI_MTFTP6_PROTOCOL *This,
- IN EFI_MTFTP6_OVERRIDE_DATA *OverrideData OPTIONAL,
- IN UINT8 *Filename,
- IN UINT8 *ModeStr OPTIONAL,
- IN UINT8 OptionCount,
- IN EFI_MTFTP6_OPTION *OptionList OPTIONAL,
- OUT UINT32 *PacketLength,
- OUT EFI_MTFTP6_PACKET **Packet OPTIONAL
- )
- {
- EFI_STATUS Status;
- EFI_MTFTP6_TOKEN Token;
- MTFTP6_GETINFO_CONTEXT Context;
- if ((This == NULL) ||
- (Filename == NULL) ||
- (PacketLength == NULL) ||
- ((OptionCount != 0) && (OptionList == NULL)) ||
- ((OverrideData != NULL) && !NetIp6IsValidUnicast (&OverrideData->ServerIp))
- )
- {
- return EFI_INVALID_PARAMETER;
- }
- if (Packet != NULL) {
- *Packet = NULL;
- }
- *PacketLength = 0;
- Context.Packet = Packet;
- Context.PacketLen = PacketLength;
- Context.Status = EFI_SUCCESS;
- //
- // Fill fields of the Token for GetInfo 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.Context = &Context;
- Token.CheckPacket = Mtftp6CheckPacket;
- Token.TimeoutCallback = NULL;
- Token.PacketNeeded = NULL;
- //
- // Start the GetInfo operation by issue the Token.
- //
- Status = Mtftp6OperationStart (This, &Token, EFI_MTFTP6_OPCODE_RRQ);
- if (Status == EFI_ABORTED) {
- //
- // Return the status if failed to issue.
- //
- return Context.Status;
- }
- return Status;
- }
- /**
- Parse the options in an MTFTPv6 OACK packet.
- The ParseOptions() function parses the option fields in an MTFTPv6 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.
- @param[in] This Pointer to the EFI_MTFTP6_PROTOCOL instance.
- @param[in] PacketLen Length of the OACK packet to be parsed.
- @param[in] Packet Pointer to the OACK packet to be parsed.
- @param[out] OptionCount Pointer to the number of options in the following OptionList.
- @param[out] OptionList Pointer to EFI_MTFTP6_OPTION storage. Each pointer in the
- OptionList points to the corresponding MTFTP option buffer
- in the Packet. Call the EFI Boot Service FreePool() to
- release the OptionList if the options in this OptionList
- are not needed anymore.
- @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:
- - PacketLen is 0.
- - Packet is NULL or Packet is not a valid MTFTPv6 packet.
- - 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 can not be allocated.
- @retval EFI_PROTOCOL_ERROR One or more of the option fields is invalid.
- **/
- EFI_STATUS
- EFIAPI
- EfiMtftp6ParseOptions (
- IN EFI_MTFTP6_PROTOCOL *This,
- IN UINT32 PacketLen,
- IN EFI_MTFTP6_PACKET *Packet,
- OUT UINT32 *OptionCount,
- OUT EFI_MTFTP6_OPTION **OptionList OPTIONAL
- )
- {
- if (This == NULL) {
- return EFI_INVALID_PARAMETER;
- }
- return Mtftp6ParseStart (Packet, PacketLen, OptionCount, OptionList);
- }
- /**
- Download a file from an MTFTPv6 server.
- The ReadFile() function is used to initialize and start an MTFTPv6 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 MTFTPv6 Protocol driver, and then Token.Event is signaled if it
- is not NULL.
- Data can be downloaded from the MTFTPv6 server into either of the following
- locations:
- - A fixed buffer that is pointed to by Token.Buffer
- - 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[in] This Pointer to the EFI_MTFTP6_PROTOCOL instance.
- @param[in] Token Pointer to the token structure to provide the parameters that are
- used in this operation.
- @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 zero but not large enough to hold the
- downloaded data in downloading process.
- Note: It does not match the UEFI 2.3 Specification.
- @retval EFI_ABORTED Current operation is aborted by user.
- @retval EFI_NETWORK_UNREACHABLE An ICMP network unreachable error packet was received.
- Note: It is not defined in the UEFI 2.3 Specification.
- @retval EFI_HOST_UNREACHABLE An ICMP host unreachable error packet was received.
- Note: It is not defined in the UEFI 2.3 Specification.
- @retval EFI_PROTOCOL_UNREACHABLE An ICMP protocol unreachable error packet was received.
- Note: It is not defined in the UEFI 2.3 Specification.
- @retval EFI_PORT_UNREACHABLE An ICMP port unreachable error packet was received.
- Note: It is not defined in the UEFI 2.3 Specification.
- @retval EFI_ICMP_ERROR An ICMP ERROR packet was received.
- @retval EFI_TIMEOUT No responses were received from the MTFTPv6 server.
- @retval EFI_TFTP_ERROR An MTFTPv6 ERROR packet was received.
- @retval EFI_DEVICE_ERROR An unexpected network error or system error occurred.
- @retval EFI_NO_MEDIA There was a media error.
- **/
- EFI_STATUS
- EFIAPI
- EfiMtftp6ReadFile (
- IN EFI_MTFTP6_PROTOCOL *This,
- IN EFI_MTFTP6_TOKEN *Token
- )
- {
- return Mtftp6OperationStart (This, Token, EFI_MTFTP6_OPCODE_RRQ);
- }
- /**
- Send a file to an MTFTPv6 server.
- 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 MTFTPv6 Protocol driver updates Token.Status.
- The caller can supply the data to be uploaded in the following two modes:
- - Through the user-provided buffer
- - 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_MTFTP6_PACKET_NEEDED callback function, the driver
- will call this callback function to get more data from the user to upload.
- @param[in] This Pointer to the EFI_MTFTP6_PROTOCOL instance.
- @param[in] Token Pointer to the token structure to provide the parameters that are
- used in this operation.
- @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:
- - This is NULL.
- - Token is NULL.
- - Token.Filename is NULL.
- - Token.OptionCount is not zero and Token.OptionList is NULL.
- - One or more options in Token.OptionList have wrong format.
- - Token.Buffer and Token.PacketNeeded are both NULL.
- - Token.OverrideData.ServerIp is not a valid unicast IPv6 address.
- @retval EFI_UNSUPPORTED One or more options in the Token.OptionList are not
- supported by this implementation.
- @retval EFI_NOT_STARTED The EFI MTFTPv6 Protocol driver has not been started.
- @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_ALREADY_STARTED This Token is already being used in another MTFTPv6 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
- EFIAPI
- EfiMtftp6WriteFile (
- IN EFI_MTFTP6_PROTOCOL *This,
- IN EFI_MTFTP6_TOKEN *Token
- )
- {
- return Mtftp6OperationStart (This, Token, EFI_MTFTP6_OPCODE_WRQ);
- }
- /**
- Download a data file directory from an MTFTPv6 server.
- The ReadDirectory() function is used to return a list of files on the
- MTFTPv6 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 the caller, if present.
- The file information that the server returns is put into either of
- the following locations:
- - A fixed buffer that is pointed to by Token.Buffer.
- - 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[in] This Pointer to the EFI_MTFTP6_PROTOCOL instance.
- @param[in] Token Pointer to the token structure to provide the parameters that are
- used in this operation.
- @retval EFI_SUCCESS The MTFTPv6 related file "directory" has been downloaded.
- @retval EFI_UNSUPPORTED The EFI MTFTPv6 Protocol driver does not support this function.
- @retval EFI_INVALID_PARAMETER One or more of the following conditions is TRUE:
- - This is NULL.
- - Token is NULL.
- - Token.Filename is NULL.
- - Token.OptionCount is not zero and Token.OptionList is NULL.
- - One or more options in Token.OptionList have wrong format.
- - Token.Buffer and Token.CheckPacket are both NULL.
- - Token.OverrideData.ServerIp is not valid unicast IPv6 addresses.
- @retval EFI_UNSUPPORTED One or more options in the Token.OptionList are not
- supported by this implementation.
- @retval EFI_NOT_STARTED The EFI MTFTPv6 Protocol driver has not been started.
- @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_ALREADY_STARTED This Token is already being used in another MTFTPv6 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
- EFIAPI
- EfiMtftp6ReadDirectory (
- IN EFI_MTFTP6_PROTOCOL *This,
- IN EFI_MTFTP6_TOKEN *Token
- )
- {
- return Mtftp6OperationStart (This, Token, EFI_MTFTP6_OPCODE_DIR);
- }
- /**
- 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[in] This The MTFTP6 protocol instance.
- @retval EFI_SUCCESS Incoming or outgoing data was processed.
- @retval EFI_NOT_STARTED This EFI MTFTPv6 Protocol instance has not been started.
- @retval EFI_INVALID_PARAMETER This is NULL.
- @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
- EFIAPI
- EfiMtftp6Poll (
- IN EFI_MTFTP6_PROTOCOL *This
- )
- {
- MTFTP6_INSTANCE *Instance;
- EFI_UDP6_PROTOCOL *Udp6;
- if (This == NULL) {
- return EFI_INVALID_PARAMETER;
- }
- Instance = MTFTP6_INSTANCE_FROM_THIS (This);
- //
- // Check the instance whether configured or in destroy.
- //
- if (Instance->Config == NULL) {
- return EFI_NOT_STARTED;
- }
- Udp6 = Instance->UdpIo->Protocol.Udp6;
- return Udp6->Poll (Udp6);
- }
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