| /** @file | |
| Tcp driver function. | |
| Copyright (c) 2005 - 2014, Intel Corporation. All rights reserved.<BR> | |
| This program and the accompanying materials | |
| are licensed and made available under the terms and conditions of the BSD License | |
| which accompanies this distribution. The full text of the license may be found at | |
| http://opensource.org/licenses/bsd-license.php<BR> | |
| THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, | |
| WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. | |
| **/ | |
| #include "Tcp4Main.h" | |
| UINT16 mTcp4RandomPort; | |
| extern EFI_COMPONENT_NAME_PROTOCOL gTcp4ComponentName; | |
| extern EFI_COMPONENT_NAME2_PROTOCOL gTcp4ComponentName2; | |
| extern EFI_UNICODE_STRING_TABLE *gTcpControllerNameTable; | |
| TCP4_HEARTBEAT_TIMER mTcp4Timer = { | |
| NULL, | |
| 0 | |
| }; | |
| EFI_TCP4_PROTOCOL mTcp4ProtocolTemplate = { | |
| Tcp4GetModeData, | |
| Tcp4Configure, | |
| Tcp4Routes, | |
| Tcp4Connect, | |
| Tcp4Accept, | |
| Tcp4Transmit, | |
| Tcp4Receive, | |
| Tcp4Close, | |
| Tcp4Cancel, | |
| Tcp4Poll | |
| }; | |
| SOCK_INIT_DATA mTcp4DefaultSockData = { | |
| SockStream, | |
| 0, | |
| NULL, | |
| TCP_BACKLOG, | |
| TCP_SND_BUF_SIZE, | |
| TCP_RCV_BUF_SIZE, | |
| &mTcp4ProtocolTemplate, | |
| Tcp4CreateSocketCallback, | |
| Tcp4DestroySocketCallback, | |
| NULL, | |
| NULL, | |
| 0, | |
| Tcp4Dispatcher, | |
| NULL, | |
| }; | |
| EFI_DRIVER_BINDING_PROTOCOL mTcp4DriverBinding = { | |
| Tcp4DriverBindingSupported, | |
| Tcp4DriverBindingStart, | |
| Tcp4DriverBindingStop, | |
| 0xa, | |
| NULL, | |
| NULL | |
| }; | |
| EFI_SERVICE_BINDING_PROTOCOL mTcp4ServiceBinding = { | |
| Tcp4ServiceBindingCreateChild, | |
| Tcp4ServiceBindingDestroyChild | |
| }; | |
| /** | |
| Create and start the heartbeat timer for TCP driver. | |
| @retval EFI_SUCCESS The timer is successfully created and started. | |
| @retval other The timer is not created. | |
| **/ | |
| EFI_STATUS | |
| Tcp4CreateTimer ( | |
| VOID | |
| ) | |
| { | |
| EFI_STATUS Status; | |
| Status = EFI_SUCCESS; | |
| if (mTcp4Timer.RefCnt == 0) { | |
| Status = gBS->CreateEvent ( | |
| EVT_TIMER | EVT_NOTIFY_SIGNAL, | |
| TPL_NOTIFY, | |
| TcpTicking, | |
| NULL, | |
| &mTcp4Timer.TimerEvent | |
| ); | |
| if (!EFI_ERROR (Status)) { | |
| Status = gBS->SetTimer ( | |
| mTcp4Timer.TimerEvent, | |
| TimerPeriodic, | |
| (UINT64) (TICKS_PER_SECOND / TCP_TICK_HZ) | |
| ); | |
| } | |
| } | |
| if (!EFI_ERROR (Status)) { | |
| mTcp4Timer.RefCnt++; | |
| } | |
| return Status; | |
| } | |
| /** | |
| Stop and destroy the heartbeat timer for TCP driver. | |
| **/ | |
| VOID | |
| Tcp4DestroyTimer ( | |
| VOID | |
| ) | |
| { | |
| ASSERT (mTcp4Timer.RefCnt > 0); | |
| mTcp4Timer.RefCnt--; | |
| if (mTcp4Timer.RefCnt > 0) { | |
| return; | |
| } | |
| gBS->SetTimer (mTcp4Timer.TimerEvent, TimerCancel, 0); | |
| gBS->CloseEvent (mTcp4Timer.TimerEvent); | |
| mTcp4Timer.TimerEvent = NULL; | |
| } | |
| /** | |
| Callback function which provided by user to remove one node in NetDestroyLinkList process. | |
| @param[in] Entry The entry to be removed. | |
| @param[in] Context Pointer to the callback context corresponds to the Context in NetDestroyLinkList. | |
| @retval EFI_SUCCESS The entry has been removed successfully. | |
| @retval Others Fail to remove the entry. | |
| **/ | |
| EFI_STATUS | |
| EFIAPI | |
| Tcp4DestroyChildEntryInHandleBuffer ( | |
| IN LIST_ENTRY *Entry, | |
| IN VOID *Context | |
| ) | |
| { | |
| SOCKET *Sock; | |
| EFI_SERVICE_BINDING_PROTOCOL *ServiceBinding; | |
| UINTN NumberOfChildren; | |
| EFI_HANDLE *ChildHandleBuffer; | |
| if (Entry == NULL || Context == NULL) { | |
| return EFI_INVALID_PARAMETER; | |
| } | |
| Sock = NET_LIST_USER_STRUCT_S (Entry, SOCKET, Link, SOCK_SIGNATURE); | |
| ServiceBinding = ((TCP4_DESTROY_CHILD_IN_HANDLE_BUF_CONTEXT *) Context)->ServiceBinding; | |
| NumberOfChildren = ((TCP4_DESTROY_CHILD_IN_HANDLE_BUF_CONTEXT *) Context)->NumberOfChildren; | |
| ChildHandleBuffer = ((TCP4_DESTROY_CHILD_IN_HANDLE_BUF_CONTEXT *) Context)->ChildHandleBuffer; | |
| if (!NetIsInHandleBuffer (Sock->SockHandle, NumberOfChildren, ChildHandleBuffer)) { | |
| return EFI_SUCCESS; | |
| } | |
| return ServiceBinding->DestroyChild (ServiceBinding, Sock->SockHandle); | |
| } | |
| /** | |
| The entry point for Tcp4 driver, used to install Tcp4 driver on the ImageHandle. | |
| @param ImageHandle The firmware allocated handle for this | |
| driver image. | |
| @param SystemTable Pointer to the EFI system table. | |
| @retval EFI_SUCCESS Driver loaded. | |
| @retval other Driver not loaded. | |
| **/ | |
| EFI_STATUS | |
| EFIAPI | |
| Tcp4DriverEntryPoint ( | |
| IN EFI_HANDLE ImageHandle, | |
| IN EFI_SYSTEM_TABLE *SystemTable | |
| ) | |
| { | |
| EFI_STATUS Status; | |
| UINT32 Seed; | |
| // | |
| // Install the TCP4 Driver Binding Protocol | |
| // | |
| Status = EfiLibInstallDriverBindingComponentName2 ( | |
| ImageHandle, | |
| SystemTable, | |
| &mTcp4DriverBinding, | |
| ImageHandle, | |
| &gTcp4ComponentName, | |
| &gTcp4ComponentName2 | |
| ); | |
| ASSERT_EFI_ERROR (Status); | |
| // | |
| // Initialize ISS and random port. | |
| // | |
| Seed = NetRandomInitSeed (); | |
| mTcpGlobalIss = NET_RANDOM (Seed) % mTcpGlobalIss; | |
| mTcp4RandomPort = (UINT16) (TCP4_PORT_KNOWN + | |
| (UINT16) (NET_RANDOM(Seed) % TCP4_PORT_KNOWN)); | |
| return Status; | |
| } | |
| /** | |
| Tests to see if this driver supports a given controller. | |
| If a child device is provided, it further tests to see if this driver supports | |
| creating a handle for the specified child device. | |
| @param This A pointer to the EFI_DRIVER_BINDING_PROTOCOL instance. | |
| @param ControllerHandle The handle of the controller to test. This handle | |
| must support a protocol interface that supplies | |
| an I/O abstraction to the driver. | |
| @param RemainingDevicePath A pointer to the remaining portion of a device path. | |
| This parameter is ignored by device drivers, and is optional for bus drivers. | |
| @retval EFI_SUCCESS The device specified by ControllerHandle and | |
| RemainingDevicePath is supported by the driver | |
| specified by This. | |
| @retval EFI_ALREADY_STARTED The device specified by ControllerHandle and | |
| RemainingDevicePath is already being managed by | |
| the driver specified by This. | |
| @retval EFI_ACCESS_DENIED The device specified by ControllerHandle and | |
| RemainingDevicePath is already being managed by a | |
| different driver or an application that requires | |
| exclusive access. | |
| @retval EFI_UNSUPPORTED The device specified by ControllerHandle and | |
| RemainingDevicePath is not supported by the driver | |
| specified by This. | |
| **/ | |
| EFI_STATUS | |
| EFIAPI | |
| Tcp4DriverBindingSupported ( | |
| IN EFI_DRIVER_BINDING_PROTOCOL *This, | |
| IN EFI_HANDLE ControllerHandle, | |
| IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath OPTIONAL | |
| ) | |
| { | |
| EFI_STATUS Status; | |
| // | |
| // Test for the Tcp4ServiceBinding Protocol | |
| // | |
| Status = gBS->OpenProtocol ( | |
| ControllerHandle, | |
| &gEfiTcp4ServiceBindingProtocolGuid, | |
| NULL, | |
| This->DriverBindingHandle, | |
| ControllerHandle, | |
| EFI_OPEN_PROTOCOL_TEST_PROTOCOL | |
| ); | |
| if (!EFI_ERROR (Status)) { | |
| return EFI_ALREADY_STARTED; | |
| } | |
| // | |
| // Test for the Ip4 Protocol | |
| // | |
| Status = gBS->OpenProtocol ( | |
| ControllerHandle, | |
| &gEfiIp4ServiceBindingProtocolGuid, | |
| NULL, | |
| This->DriverBindingHandle, | |
| ControllerHandle, | |
| EFI_OPEN_PROTOCOL_TEST_PROTOCOL | |
| ); | |
| return Status; | |
| } | |
| /** | |
| Start this driver on ControllerHandle. | |
| The Start() function is designed to be invoked from the EFI boot service | |
| ConnectController(). As a result, much of the error checking on the parameters | |
| to Start() has been moved into this common boot service. It is legal to call | |
| Start() from other locations, but the following calling restrictions must be | |
| followed or the system behavior will not be deterministic. | |
| 1. ControllerHandle must be a valid EFI_HANDLE. | |
| 2. If RemainingDevicePath is not NULL, then it must be a pointer to a naturally | |
| aligned EFI_DEVICE_PATH_PROTOCOL. | |
| 3. Prior to calling Start(), the Supported() function for the driver specified | |
| by This must have been called with the same calling parameters, and Supported() | |
| must have returned EFI_SUCCESS. | |
| @param This A pointer to the EFI_DRIVER_BINDING_PROTOCOL instance. | |
| @param ControllerHandle The handle of the controller to start. This handle | |
| must support a protocol interface that supplies | |
| an I/O abstraction to the driver. | |
| @param RemainingDevicePath A pointer to the remaining portion of a device path. | |
| This parameter is ignored by device drivers, and is | |
| optional for bus drivers. | |
| @retval EFI_SUCCESS The device was started. | |
| @retval EFI_ALREADY_STARTED The device could not be started due to a device error. | |
| @retval EFI_OUT_OF_RESOURCES The request could not be completed due to a lack | |
| of resources. | |
| **/ | |
| EFI_STATUS | |
| EFIAPI | |
| Tcp4DriverBindingStart ( | |
| IN EFI_DRIVER_BINDING_PROTOCOL *This, | |
| IN EFI_HANDLE ControllerHandle, | |
| IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath OPTIONAL | |
| ) | |
| { | |
| EFI_STATUS Status; | |
| TCP4_SERVICE_DATA *TcpServiceData; | |
| IP_IO_OPEN_DATA OpenData; | |
| TcpServiceData = AllocateZeroPool (sizeof (TCP4_SERVICE_DATA)); | |
| if (NULL == TcpServiceData) { | |
| DEBUG ((EFI_D_ERROR, "Tcp4DriverBindingStart: Have no enough" | |
| " resource to create a Tcp Servcie Data\n")); | |
| return EFI_OUT_OF_RESOURCES; | |
| } | |
| // | |
| // Create a new IP IO to Consume it | |
| // | |
| TcpServiceData->IpIo = IpIoCreate ( | |
| This->DriverBindingHandle, | |
| ControllerHandle, | |
| IP_VERSION_4 | |
| ); | |
| if (NULL == TcpServiceData->IpIo) { | |
| DEBUG ((EFI_D_ERROR, "Tcp4DriverBindingStart: Have no enough" | |
| " resource to create an Ip Io\n")); | |
| Status = EFI_OUT_OF_RESOURCES; | |
| goto ON_ERROR; | |
| } | |
| // | |
| // Configure and start IpIo. | |
| // | |
| ZeroMem (&OpenData, sizeof (IP_IO_OPEN_DATA)); | |
| CopyMem ( | |
| &OpenData.IpConfigData.Ip4CfgData, | |
| &mIp4IoDefaultIpConfigData, | |
| sizeof (EFI_IP4_CONFIG_DATA) | |
| ); | |
| OpenData.IpConfigData.Ip4CfgData.DefaultProtocol = EFI_IP_PROTO_TCP; | |
| OpenData.PktRcvdNotify = Tcp4RxCallback; | |
| Status = IpIoOpen (TcpServiceData->IpIo, &OpenData); | |
| if (EFI_ERROR (Status)) { | |
| goto ON_ERROR; | |
| } | |
| // | |
| // Create the timer event used by TCP driver | |
| // | |
| Status = Tcp4CreateTimer (); | |
| if (EFI_ERROR (Status)) { | |
| DEBUG ((EFI_D_ERROR, "Tcp4DriverBindingStart: Create TcpTimer" | |
| " Event failed with %r\n", Status)); | |
| goto ON_ERROR; | |
| } | |
| // | |
| // Install the Tcp4ServiceBinding Protocol on the | |
| // controller handle | |
| // | |
| TcpServiceData->Tcp4ServiceBinding = mTcp4ServiceBinding; | |
| Status = gBS->InstallMultipleProtocolInterfaces ( | |
| &ControllerHandle, | |
| &gEfiTcp4ServiceBindingProtocolGuid, | |
| &TcpServiceData->Tcp4ServiceBinding, | |
| NULL | |
| ); | |
| if (EFI_ERROR (Status)) { | |
| DEBUG ((EFI_D_ERROR, "Tcp4DriverBindingStart: Install Tcp4 Service Binding" | |
| " Protocol failed for %r\n", Status)); | |
| Tcp4DestroyTimer (); | |
| goto ON_ERROR; | |
| } | |
| // | |
| // Initialize member in TcpServiceData | |
| // | |
| TcpServiceData->ControllerHandle = ControllerHandle; | |
| TcpServiceData->Signature = TCP4_DRIVER_SIGNATURE; | |
| TcpServiceData->DriverBindingHandle = This->DriverBindingHandle; | |
| InitializeListHead (&TcpServiceData->SocketList); | |
| return EFI_SUCCESS; | |
| ON_ERROR: | |
| if (TcpServiceData->IpIo != NULL) { | |
| IpIoDestroy (TcpServiceData->IpIo); | |
| TcpServiceData->IpIo = NULL; | |
| } | |
| FreePool (TcpServiceData); | |
| return Status; | |
| } | |
| /** | |
| Stop this driver on ControllerHandle. | |
| The Stop() function is designed to be invoked from the EFI boot service | |
| DisconnectController(). As a result, much of the error checking on the parameters | |
| to Stop() has been moved into this common boot service. It is legal to call Stop() | |
| from other locations, but the following calling restrictions must be followed | |
| or the system behavior will not be deterministic. | |
| 1. ControllerHandle must be a valid EFI_HANDLE that was used on a previous call | |
| to this same driver's Start() function. | |
| 2. The first NumberOfChildren handles of ChildHandleBuffer must all be a valid | |
| EFI_HANDLE. In addition, all of these handles must have been created in this | |
| driver's Start() function, and the Start() function must have called OpenProtocol() | |
| on ControllerHandle with an Attribute of EFI_OPEN_PROTOCOL_BY_CHILD_CONTROLLER. | |
| @param This A pointer to the EFI_DRIVER_BINDING_PROTOCOL instance. | |
| @param ControllerHandle A handle to the device being stopped. The handle must | |
| support a bus specific I/O protocol for the driver | |
| to use to stop the device. | |
| @param NumberOfChildren The number of child device handles in ChildHandleBuffer. | |
| @param ChildHandleBuffer An array of child handles to be freed. May be NULL if | |
| NumberOfChildren is 0. | |
| @retval EFI_SUCCESS The device was stopped. | |
| @retval EFI_DEVICE_ERROR The device could not be stopped due to a device error. | |
| **/ | |
| EFI_STATUS | |
| EFIAPI | |
| Tcp4DriverBindingStop ( | |
| IN EFI_DRIVER_BINDING_PROTOCOL *This, | |
| IN EFI_HANDLE ControllerHandle, | |
| IN UINTN NumberOfChildren, | |
| IN EFI_HANDLE *ChildHandleBuffer | |
| ) | |
| { | |
| EFI_STATUS Status; | |
| EFI_HANDLE NicHandle; | |
| EFI_SERVICE_BINDING_PROTOCOL *ServiceBinding; | |
| TCP4_SERVICE_DATA *TcpServiceData; | |
| LIST_ENTRY *List; | |
| TCP4_DESTROY_CHILD_IN_HANDLE_BUF_CONTEXT Context; | |
| // Find the NicHandle where Tcp4 ServiceBinding Protocol is installed. | |
| // | |
| NicHandle = NetLibGetNicHandle (ControllerHandle, &gEfiIp4ProtocolGuid); | |
| if (NicHandle == NULL) { | |
| return EFI_SUCCESS; | |
| } | |
| // | |
| // Retrieve the TCP driver Data Structure | |
| // | |
| Status = gBS->OpenProtocol ( | |
| NicHandle, | |
| &gEfiTcp4ServiceBindingProtocolGuid, | |
| (VOID **) &ServiceBinding, | |
| This->DriverBindingHandle, | |
| ControllerHandle, | |
| EFI_OPEN_PROTOCOL_GET_PROTOCOL | |
| ); | |
| if (EFI_ERROR (Status)) { | |
| DEBUG ((EFI_D_ERROR, "Tcp4DriverBindingStop: Locate Tcp4 Service " | |
| " Binding Protocol failed with %r\n", Status)); | |
| return EFI_DEVICE_ERROR; | |
| } | |
| TcpServiceData = TCP4_FROM_THIS (ServiceBinding); | |
| if (NumberOfChildren != 0) { | |
| List = &TcpServiceData->SocketList; | |
| Context.ServiceBinding = ServiceBinding; | |
| Context.NumberOfChildren = NumberOfChildren; | |
| Context.ChildHandleBuffer = ChildHandleBuffer; | |
| Status = NetDestroyLinkList ( | |
| List, | |
| Tcp4DestroyChildEntryInHandleBuffer, | |
| &Context, | |
| NULL | |
| ); | |
| } else if (IsListEmpty (&TcpServiceData->SocketList)) { | |
| // | |
| // Uninstall TCP servicebinding protocol | |
| // | |
| gBS->UninstallMultipleProtocolInterfaces ( | |
| NicHandle, | |
| &gEfiTcp4ServiceBindingProtocolGuid, | |
| ServiceBinding, | |
| NULL | |
| ); | |
| // | |
| // Destroy the IpIO consumed by TCP driver | |
| // | |
| IpIoDestroy (TcpServiceData->IpIo); | |
| TcpServiceData->IpIo = NULL; | |
| // | |
| // Destroy the heartbeat timer. | |
| // | |
| Tcp4DestroyTimer (); | |
| if (gTcpControllerNameTable != NULL) { | |
| FreeUnicodeStringTable (gTcpControllerNameTable); | |
| gTcpControllerNameTable = NULL; | |
| } | |
| // | |
| // Release the TCP service data | |
| // | |
| FreePool (TcpServiceData); | |
| Status = EFI_SUCCESS; | |
| } | |
| return Status; | |
| } | |
| /** | |
| Open Ip4 and device path protocols for a created socket, and insert it in | |
| socket list. | |
| @param This Pointer to the socket just created | |
| @param Context Context of the socket | |
| @retval EFI_SUCCESS This protocol is installed successfully. | |
| @retval other Some error occured. | |
| **/ | |
| EFI_STATUS | |
| Tcp4CreateSocketCallback ( | |
| IN SOCKET *This, | |
| IN VOID *Context | |
| ) | |
| { | |
| EFI_STATUS Status; | |
| TCP4_SERVICE_DATA *TcpServiceData; | |
| EFI_IP4_PROTOCOL *Ip4; | |
| TcpServiceData = ((TCP4_PROTO_DATA *) This->ProtoReserved)->TcpService; | |
| // | |
| // Open the default Ip4 protocol of IP_IO BY_DRIVER. | |
| // | |
| Status = gBS->OpenProtocol ( | |
| TcpServiceData->IpIo->ChildHandle, | |
| &gEfiIp4ProtocolGuid, | |
| (VOID **) &Ip4, | |
| TcpServiceData->DriverBindingHandle, | |
| This->SockHandle, | |
| EFI_OPEN_PROTOCOL_BY_CHILD_CONTROLLER | |
| ); | |
| if (EFI_ERROR (Status)) { | |
| return Status; | |
| } | |
| // | |
| // Open the device path on the handle where service binding resides on. | |
| // | |
| Status = gBS->OpenProtocol ( | |
| TcpServiceData->ControllerHandle, | |
| &gEfiDevicePathProtocolGuid, | |
| (VOID **) &This->ParentDevicePath, | |
| TcpServiceData->DriverBindingHandle, | |
| This->SockHandle, | |
| EFI_OPEN_PROTOCOL_GET_PROTOCOL | |
| ); | |
| if (EFI_ERROR (Status)) { | |
| gBS->CloseProtocol ( | |
| TcpServiceData->IpIo->ChildHandle, | |
| &gEfiIp4ProtocolGuid, | |
| TcpServiceData->DriverBindingHandle, | |
| This->SockHandle | |
| ); | |
| } else { | |
| // | |
| // Insert this socket into the SocketList. | |
| // | |
| InsertTailList (&TcpServiceData->SocketList, &This->Link); | |
| } | |
| return Status; | |
| } | |
| /** | |
| Close Ip4 and device path protocols for a socket, and remove it from socket list. | |
| @param This Pointer to the socket to be removed | |
| @param Context Context of the socket | |
| **/ | |
| VOID | |
| Tcp4DestroySocketCallback ( | |
| IN SOCKET *This, | |
| IN VOID *Context | |
| ) | |
| { | |
| TCP4_SERVICE_DATA *TcpServiceData; | |
| TcpServiceData = ((TCP4_PROTO_DATA *) This->ProtoReserved)->TcpService; | |
| // | |
| // Remove this node from the list. | |
| // | |
| RemoveEntryList (&This->Link); | |
| // | |
| // Close the Ip4 protocol. | |
| // | |
| gBS->CloseProtocol ( | |
| TcpServiceData->IpIo->ChildHandle, | |
| &gEfiIp4ProtocolGuid, | |
| TcpServiceData->DriverBindingHandle, | |
| This->SockHandle | |
| ); | |
| } | |
| /** | |
| Creates a child handle and installs a protocol. | |
| The CreateChild() function installs a protocol on ChildHandle. If ChildHandle | |
| is a pointer to NULL, then a new handle is created and returned in ChildHandle. | |
| If ChildHandle is not a pointer to NULL, then the protocol installs on the existing | |
| ChildHandle. | |
| @param This Pointer to the EFI_SERVICE_BINDING_PROTOCOL instance. | |
| @param ChildHandle Pointer to the handle of the child to create. If it is NULL, then | |
| a new handle is created. If it is a pointer to an existing UEFI | |
| handle, then the protocol is added to the existing UEFI handle. | |
| @retval EFI_SUCCES The protocol was added to ChildHandle. | |
| @retval EFI_INVALID_PARAMETER ChildHandle is NULL. | |
| @retval EFI_OUT_OF_RESOURCES There are not enough resources availabe to create | |
| the child. | |
| @retval other The child handle was not created. | |
| **/ | |
| EFI_STATUS | |
| EFIAPI | |
| Tcp4ServiceBindingCreateChild ( | |
| IN EFI_SERVICE_BINDING_PROTOCOL *This, | |
| IN OUT EFI_HANDLE *ChildHandle | |
| ) | |
| { | |
| SOCKET *Sock; | |
| TCP4_SERVICE_DATA *TcpServiceData; | |
| TCP4_PROTO_DATA TcpProto; | |
| EFI_STATUS Status; | |
| EFI_TPL OldTpl; | |
| if (NULL == This || NULL == ChildHandle) { | |
| return EFI_INVALID_PARAMETER; | |
| } | |
| OldTpl = gBS->RaiseTPL (TPL_CALLBACK); | |
| Status = EFI_SUCCESS; | |
| TcpServiceData = TCP4_FROM_THIS (This); | |
| TcpProto.TcpService = TcpServiceData; | |
| TcpProto.TcpPcb = NULL; | |
| // | |
| // Create a tcp instance with defualt Tcp default | |
| // sock init data and TcpProto | |
| // | |
| mTcp4DefaultSockData.ProtoData = &TcpProto; | |
| mTcp4DefaultSockData.DataSize = sizeof (TCP4_PROTO_DATA); | |
| mTcp4DefaultSockData.DriverBinding = TcpServiceData->DriverBindingHandle; | |
| Sock = SockCreateChild (&mTcp4DefaultSockData); | |
| if (NULL == Sock) { | |
| DEBUG ((EFI_D_ERROR, "Tcp4DriverBindingCreateChild: " | |
| "No resource to create a Tcp Child\n")); | |
| Status = EFI_OUT_OF_RESOURCES; | |
| } else { | |
| *ChildHandle = Sock->SockHandle; | |
| } | |
| mTcp4DefaultSockData.ProtoData = NULL; | |
| gBS->RestoreTPL (OldTpl); | |
| return Status; | |
| } | |
| /** | |
| Destroys a child handle with a protocol installed on it. | |
| The DestroyChild() function does the opposite of CreateChild(). It removes a protocol | |
| that was installed by CreateChild() from ChildHandle. If the removed protocol is the | |
| last protocol on ChildHandle, then ChildHandle is destroyed. | |
| @param This Pointer to the EFI_SERVICE_BINDING_PROTOCOL instance. | |
| @param ChildHandle Handle of the child to destroy | |
| @retval EFI_SUCCES The protocol was removed from ChildHandle. | |
| @retval EFI_UNSUPPORTED ChildHandle does not support the protocol that is | |
| being removed. | |
| @retval EFI_INVALID_PARAMETER Child handle is NULL. | |
| @retval EFI_ACCESS_DENIED The protocol could not be removed from the ChildHandle | |
| because its services are being used. | |
| @retval other The child handle was not destroyed. | |
| **/ | |
| EFI_STATUS | |
| EFIAPI | |
| Tcp4ServiceBindingDestroyChild ( | |
| IN EFI_SERVICE_BINDING_PROTOCOL *This, | |
| IN EFI_HANDLE ChildHandle | |
| ) | |
| { | |
| EFI_STATUS Status; | |
| EFI_TCP4_PROTOCOL *Tcp4; | |
| SOCKET *Sock; | |
| if (NULL == This || NULL == ChildHandle) { | |
| return EFI_INVALID_PARAMETER; | |
| } | |
| // | |
| // retrieve the Tcp4 protocol from ChildHandle | |
| // | |
| Status = gBS->OpenProtocol ( | |
| ChildHandle, | |
| &gEfiTcp4ProtocolGuid, | |
| (VOID **) &Tcp4, | |
| mTcp4DriverBinding.DriverBindingHandle, | |
| ChildHandle, | |
| EFI_OPEN_PROTOCOL_GET_PROTOCOL | |
| ); | |
| if (EFI_ERROR (Status)) { | |
| Status = EFI_UNSUPPORTED; | |
| } else { | |
| // | |
| // destroy this sock and related Tcp protocol control | |
| // block | |
| // | |
| Sock = SOCK_FROM_THIS (Tcp4); | |
| SockDestroyChild (Sock); | |
| } | |
| return Status; | |
| } | |