/** @file\r
\r
-Copyright (c) 2006 - 2011, Intel Corporation. All rights reserved.<BR>\r
+Copyright (c) 2006 - 2016, Intel Corporation. All rights reserved.<BR>\r
This program and the accompanying materials\r
are licensed and made available under the terms and conditions of the BSD License\r
which accompanies this distribution. The full text of the license may be found at\r
\r
\r
/**\r
- Destory the DHCP service. The Dhcp4 service may be partly initialized,\r
+ Destroy the DHCP service. The Dhcp4 service may be partly initialized,\r
or partly destroyed. If a resource is destroyed, it is marked as so in\r
case the destroy failed and being called again later.\r
\r
- @param[in] DhcpSb The DHCP service instance to destory.\r
+ @param[in] DhcpSb The DHCP service instance to destroy.\r
\r
@retval EFI_SUCCESS Always return success.\r
\r
\r
DhcpSb->Signature = DHCP_SERVICE_SIGNATURE;\r
DhcpSb->ServiceState = DHCP_UNCONFIGED;\r
- DhcpSb->InDestory = FALSE;\r
DhcpSb->Controller = Controller;\r
DhcpSb->Image = ImageHandle;\r
InitializeListHead (&DhcpSb->Children);\r
return Status;\r
}\r
\r
+/**\r
+ Callback function which provided by user to remove one node in NetDestroyLinkList process.\r
+ \r
+ @param[in] Entry The entry to be removed.\r
+ @param[in] Context Pointer to the callback context corresponds to the Context in NetDestroyLinkList.\r
+\r
+ @retval EFI_SUCCESS The entry has been removed successfully.\r
+ @retval Others Fail to remove the entry.\r
+\r
+**/\r
+EFI_STATUS\r
+EFIAPI\r
+Dhcp4DestroyChildEntry (\r
+ IN LIST_ENTRY *Entry,\r
+ IN VOID *Context\r
+ )\r
+{\r
+ DHCP_PROTOCOL *Instance;\r
+ EFI_SERVICE_BINDING_PROTOCOL *ServiceBinding;\r
+\r
+ if (Entry == NULL || Context == NULL) {\r
+ return EFI_INVALID_PARAMETER;\r
+ }\r
+\r
+ Instance = NET_LIST_USER_STRUCT_S (Entry, DHCP_PROTOCOL, Link, DHCP_PROTOCOL_SIGNATURE);\r
+ ServiceBinding = (EFI_SERVICE_BINDING_PROTOCOL *) Context;\r
+\r
+ return ServiceBinding->DestroyChild (ServiceBinding, Instance->Handle);\r
+}\r
+\r
\r
/**\r
Stop this driver on ControllerHandle. This service is called by the\r
{\r
EFI_SERVICE_BINDING_PROTOCOL *ServiceBinding;\r
DHCP_SERVICE *DhcpSb;\r
- DHCP_PROTOCOL *Instance;\r
EFI_HANDLE NicHandle;\r
EFI_STATUS Status;\r
- EFI_TPL OldTpl;\r
+ LIST_ENTRY *List;\r
+ UINTN ListLength;\r
\r
//\r
// DHCP driver opens UDP child, So, the ControllerHandle is the\r
NicHandle = NetLibGetNicHandle (ControllerHandle, &gEfiUdp4ProtocolGuid);\r
\r
if (NicHandle == NULL) {\r
- return EFI_DEVICE_ERROR;\r
+ return EFI_SUCCESS;\r
}\r
\r
Status = gBS->OpenProtocol (\r
}\r
\r
DhcpSb = DHCP_SERVICE_FROM_THIS (ServiceBinding);\r
-\r
- if (DhcpSb->InDestory) {\r
- return EFI_SUCCESS;\r
+ if (!IsListEmpty (&DhcpSb->Children)) {\r
+ //\r
+ // Destroy all the children instances before destory the service.\r
+ // \r
+ List = &DhcpSb->Children;\r
+ Status = NetDestroyLinkList (\r
+ List,\r
+ Dhcp4DestroyChildEntry,\r
+ ServiceBinding,\r
+ &ListLength\r
+ );\r
+ if (EFI_ERROR (Status) || ListLength != 0) {\r
+ Status = EFI_DEVICE_ERROR;\r
+ }\r
}\r
\r
- OldTpl = gBS->RaiseTPL (TPL_CALLBACK);\r
-\r
- if (NumberOfChildren == 0) {\r
+ if (NumberOfChildren == 0 && !IsListEmpty (&DhcpSb->Children)) {\r
+ Status = EFI_DEVICE_ERROR;\r
+ }\r
\r
- DhcpSb->InDestory = TRUE;\r
- DhcpSb->ServiceState = DHCP_DESTORY;\r
+ if (NumberOfChildren == 0 && IsListEmpty (&DhcpSb->Children)) {\r
+ //\r
+ // Destroy the service itself if no child instance left.\r
+ //\r
+ DhcpSb->ServiceState = DHCP_DESTROY;\r
\r
gBS->UninstallProtocolInterface (\r
NicHandle,\r
\r
Dhcp4CloseService (DhcpSb);\r
\r
- FreePool (DhcpSb);\r
- } else {\r
- //\r
- // Don't use NET_LIST_FOR_EACH_SAFE here, Dhcp4ServiceBindingDestoryChild\r
- // may cause other child to be deleted.\r
- //\r
- while (!IsListEmpty (&DhcpSb->Children)) {\r
- Instance = NET_LIST_HEAD (&DhcpSb->Children, DHCP_PROTOCOL, Link);\r
- ServiceBinding->DestroyChild (ServiceBinding, Instance->Handle);\r
- }\r
-\r
- if (DhcpSb->NumChildren != 0) {\r
- Status = EFI_DEVICE_ERROR;\r
+ if (gDhcpControllerNameTable != NULL) {\r
+ FreeUnicodeStringTable (gDhcpControllerNameTable);\r
+ gDhcpControllerNameTable = NULL;\r
}\r
+ FreePool (DhcpSb);\r
+ \r
+ Status = EFI_SUCCESS;\r
}\r
\r
- gBS->RestoreTPL (OldTpl);\r
-\r
return Status;\r
}\r
\r
InitializeListHead (&Instance->Link);\r
Instance->Handle = NULL;\r
Instance->Service = DhcpSb;\r
- Instance->InDestory = FALSE;\r
+ Instance->InDestroy = FALSE;\r
Instance->CompletionEvent = NULL;\r
Instance->RenewRebindEvent = NULL;\r
Instance->Token = NULL;\r
Instance->UdpIo = NULL;\r
+ Instance->ElaspedTime = 0;\r
NetbufQueInit (&Instance->ResponseQueue);\r
}\r
\r
\r
@retval EFI_SUCCES The protocol was added to ChildHandle.\r
@retval EFI_INVALID_PARAMETER ChildHandle is NULL.\r
- @retval EFI_OUT_OF_RESOURCES There are not enough resources availabe to create\r
+ @retval EFI_OUT_OF_RESOURCES There are not enough resources available to create\r
the child\r
@retval other The child handle was not created\r
\r
//\r
// A child can be destroyed more than once. For example,\r
// Dhcp4DriverBindingStop will destroy all of its children.\r
- // when caller driver is being stopped, it will destory the\r
+ // when caller driver is being stopped, it will destroy the\r
// dhcp child it opens.\r
//\r
- if (Instance->InDestory) {\r
+ if (Instance->InDestroy) {\r
return EFI_SUCCESS;\r
}\r
\r
OldTpl = gBS->RaiseTPL (TPL_CALLBACK);\r
- Instance->InDestory = TRUE;\r
+ Instance->InDestroy = TRUE;\r
\r
//\r
// Close the Udp4 protocol.\r
//\r
// Uninstall the DHCP4 protocol first to enable a top down destruction.\r
//\r
+ gBS->RestoreTPL (OldTpl);\r
Status = gBS->UninstallProtocolInterface (\r
ChildHandle,\r
&gEfiDhcp4ProtocolGuid,\r
Dhcp\r
);\r
-\r
+ OldTpl = gBS->RaiseTPL (TPL_CALLBACK);\r
if (EFI_ERROR (Status)) {\r
- Instance->InDestory = FALSE;\r
+ Instance->InDestroy = FALSE;\r
\r
gBS->RestoreTPL (OldTpl);\r
return Status;\r
RemoveEntryList (&Instance->Link);\r
DhcpSb->NumChildren--;\r
\r
+ if (Instance->UdpIo != NULL) {\r
+ UdpIoCleanIo (Instance->UdpIo);\r
+ gBS->CloseProtocol (\r
+ Instance->UdpIo->UdpHandle,\r
+ &gEfiUdp4ProtocolGuid,\r
+ Instance->Service->Image,\r
+ Instance->Handle\r
+ );\r
+ UdpIoFreeIo (Instance->UdpIo);\r
+ Instance->UdpIo = NULL;\r
+ Instance->Token = NULL;\r
+ }\r
+\r
gBS->RestoreTPL (OldTpl);\r
\r
FreePool (Instance);\r
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