NetworkPkg: Move Network library and drivers from MdeModulePkg to NetworkPkg
Signed-off-by: Liming Gao <liming.gao@intel.com> Cc: Siyuan Fu <siyuan.fu@intel.com> Cc: Jiaxin Wu <jiaxin.wu@intel.com> Reviewed-by: Jiaxin Wu <jiaxin.wu@intel.com> Reviewed-by: Siyuan Fu <siyuan.fu@intel.com>
This commit is contained in:
Liming Gao
732
NetworkPkg/Dhcp4Dxe/Dhcp4Driver.c
Normal file
732
NetworkPkg/Dhcp4Dxe/Dhcp4Driver.c
Normal file
@@ -0,0 +1,732 @@
|
||||
/** @file
|
||||
|
||||
Copyright (c) 2006 - 2018, Intel Corporation. All rights reserved.<BR>
|
||||
SPDX-License-Identifier: BSD-2-Clause-Patent
|
||||
|
||||
**/
|
||||
|
||||
#include "Dhcp4Impl.h"
|
||||
#include "Dhcp4Driver.h"
|
||||
|
||||
EFI_DRIVER_BINDING_PROTOCOL gDhcp4DriverBinding = {
|
||||
Dhcp4DriverBindingSupported,
|
||||
Dhcp4DriverBindingStart,
|
||||
Dhcp4DriverBindingStop,
|
||||
0xa,
|
||||
NULL,
|
||||
NULL
|
||||
};
|
||||
|
||||
EFI_SERVICE_BINDING_PROTOCOL mDhcp4ServiceBindingTemplate = {
|
||||
Dhcp4ServiceBindingCreateChild,
|
||||
Dhcp4ServiceBindingDestroyChild
|
||||
};
|
||||
|
||||
/**
|
||||
This is the declaration of an EFI image entry point. This entry point is
|
||||
the same for UEFI Applications, UEFI OS Loaders, and UEFI Drivers including
|
||||
both device drivers and bus drivers.
|
||||
|
||||
Entry point of the DHCP driver to install various protocols.
|
||||
|
||||
@param[in] ImageHandle The firmware allocated handle for the UEFI image.
|
||||
@param[in] SystemTable A pointer to the EFI System Table.
|
||||
|
||||
@retval EFI_SUCCESS The operation completed successfully.
|
||||
@retval EFI_OUT_OF_RESOURCES The request could not be completed due to a lack of resources.
|
||||
|
||||
**/
|
||||
EFI_STATUS
|
||||
EFIAPI
|
||||
Dhcp4DriverEntryPoint (
|
||||
IN EFI_HANDLE ImageHandle,
|
||||
IN EFI_SYSTEM_TABLE *SystemTable
|
||||
)
|
||||
{
|
||||
return EfiLibInstallDriverBindingComponentName2 (
|
||||
ImageHandle,
|
||||
SystemTable,
|
||||
&gDhcp4DriverBinding,
|
||||
ImageHandle,
|
||||
&gDhcp4ComponentName,
|
||||
&gDhcp4ComponentName2
|
||||
);
|
||||
}
|
||||
|
||||
|
||||
/**
|
||||
Test to see if this driver supports ControllerHandle. This service
|
||||
is called by the EFI boot service ConnectController(). In
|
||||
order to make drivers as small as possible, there are a few calling
|
||||
restrictions for this service. ConnectController() must
|
||||
follow these calling restrictions. If any other agent wishes to call
|
||||
Supported() it must also follow these calling restrictions.
|
||||
|
||||
@param[in] This Protocol instance pointer.
|
||||
@param[in] ControllerHandle Handle of device to test
|
||||
@param[in] RemainingDevicePath Optional parameter use to pick a specific child
|
||||
device to start.
|
||||
|
||||
@retval EFI_SUCCESS This driver supports this device
|
||||
@retval EFI_ALREADY_STARTED This driver is already running on this device
|
||||
@retval other This driver does not support this device
|
||||
|
||||
**/
|
||||
EFI_STATUS
|
||||
EFIAPI
|
||||
Dhcp4DriverBindingSupported (
|
||||
IN EFI_DRIVER_BINDING_PROTOCOL *This,
|
||||
IN EFI_HANDLE ControllerHandle,
|
||||
IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath OPTIONAL
|
||||
)
|
||||
{
|
||||
EFI_STATUS Status;
|
||||
|
||||
Status = gBS->OpenProtocol (
|
||||
ControllerHandle,
|
||||
&gEfiUdp4ServiceBindingProtocolGuid,
|
||||
NULL,
|
||||
This->DriverBindingHandle,
|
||||
ControllerHandle,
|
||||
EFI_OPEN_PROTOCOL_TEST_PROTOCOL
|
||||
);
|
||||
|
||||
return Status;
|
||||
}
|
||||
|
||||
|
||||
|
||||
/**
|
||||
Configure the default UDP child to receive all the DHCP traffics
|
||||
on this network interface.
|
||||
|
||||
@param[in] UdpIo The UDP IO to configure
|
||||
@param[in] Context The context to the function
|
||||
|
||||
@retval EFI_SUCCESS The UDP IO is successfully configured.
|
||||
@retval Others Failed to configure the UDP child.
|
||||
|
||||
**/
|
||||
EFI_STATUS
|
||||
EFIAPI
|
||||
DhcpConfigUdpIo (
|
||||
IN UDP_IO *UdpIo,
|
||||
IN VOID *Context
|
||||
)
|
||||
{
|
||||
EFI_UDP4_CONFIG_DATA UdpConfigData;
|
||||
|
||||
UdpConfigData.AcceptBroadcast = TRUE;
|
||||
UdpConfigData.AcceptPromiscuous = FALSE;
|
||||
UdpConfigData.AcceptAnyPort = FALSE;
|
||||
UdpConfigData.AllowDuplicatePort = TRUE;
|
||||
UdpConfigData.TypeOfService = 0;
|
||||
UdpConfigData.TimeToLive = 64;
|
||||
UdpConfigData.DoNotFragment = FALSE;
|
||||
UdpConfigData.ReceiveTimeout = 0;
|
||||
UdpConfigData.TransmitTimeout = 0;
|
||||
|
||||
UdpConfigData.UseDefaultAddress = FALSE;
|
||||
UdpConfigData.StationPort = DHCP_CLIENT_PORT;
|
||||
UdpConfigData.RemotePort = DHCP_SERVER_PORT;
|
||||
|
||||
ZeroMem (&UdpConfigData.StationAddress, sizeof (EFI_IPv4_ADDRESS));
|
||||
ZeroMem (&UdpConfigData.SubnetMask, sizeof (EFI_IPv4_ADDRESS));
|
||||
ZeroMem (&UdpConfigData.RemoteAddress, sizeof (EFI_IPv4_ADDRESS));
|
||||
|
||||
return UdpIo->Protocol.Udp4->Configure (UdpIo->Protocol.Udp4, &UdpConfigData);;
|
||||
}
|
||||
|
||||
|
||||
|
||||
/**
|
||||
Destroy the DHCP service. The Dhcp4 service may be partly initialized,
|
||||
or partly destroyed. If a resource is destroyed, it is marked as so in
|
||||
case the destroy failed and being called again later.
|
||||
|
||||
@param[in] DhcpSb The DHCP service instance to destroy.
|
||||
|
||||
@retval EFI_SUCCESS Always return success.
|
||||
|
||||
**/
|
||||
EFI_STATUS
|
||||
Dhcp4CloseService (
|
||||
IN DHCP_SERVICE *DhcpSb
|
||||
)
|
||||
{
|
||||
DhcpCleanLease (DhcpSb);
|
||||
|
||||
if (DhcpSb->UdpIo != NULL) {
|
||||
UdpIoFreeIo (DhcpSb->UdpIo);
|
||||
DhcpSb->UdpIo = NULL;
|
||||
}
|
||||
|
||||
if (DhcpSb->Timer != NULL) {
|
||||
gBS->SetTimer (DhcpSb->Timer, TimerCancel, 0);
|
||||
gBS->CloseEvent (DhcpSb->Timer);
|
||||
|
||||
DhcpSb->Timer = NULL;
|
||||
}
|
||||
|
||||
return EFI_SUCCESS;
|
||||
}
|
||||
|
||||
|
||||
|
||||
/**
|
||||
Create a new DHCP service binding instance for the controller.
|
||||
|
||||
@param[in] Controller The controller to install DHCP service binding
|
||||
protocol onto
|
||||
@param[in] ImageHandle The driver's image handle
|
||||
@param[out] Service The variable to receive the created DHCP service
|
||||
instance.
|
||||
|
||||
@retval EFI_OUT_OF_RESOURCES Failed to allocate resource .
|
||||
@retval EFI_SUCCESS The DHCP service instance is created.
|
||||
@retval other Other error occurs.
|
||||
|
||||
**/
|
||||
EFI_STATUS
|
||||
Dhcp4CreateService (
|
||||
IN EFI_HANDLE Controller,
|
||||
IN EFI_HANDLE ImageHandle,
|
||||
OUT DHCP_SERVICE **Service
|
||||
)
|
||||
{
|
||||
DHCP_SERVICE *DhcpSb;
|
||||
EFI_STATUS Status;
|
||||
|
||||
*Service = NULL;
|
||||
DhcpSb = AllocateZeroPool (sizeof (DHCP_SERVICE));
|
||||
|
||||
if (DhcpSb == NULL) {
|
||||
return EFI_OUT_OF_RESOURCES;
|
||||
}
|
||||
|
||||
DhcpSb->Signature = DHCP_SERVICE_SIGNATURE;
|
||||
DhcpSb->ServiceState = DHCP_UNCONFIGED;
|
||||
DhcpSb->Controller = Controller;
|
||||
DhcpSb->Image = ImageHandle;
|
||||
InitializeListHead (&DhcpSb->Children);
|
||||
DhcpSb->DhcpState = Dhcp4Stopped;
|
||||
DhcpSb->Xid = NET_RANDOM (NetRandomInitSeed ());
|
||||
CopyMem (
|
||||
&DhcpSb->ServiceBinding,
|
||||
&mDhcp4ServiceBindingTemplate,
|
||||
sizeof (EFI_SERVICE_BINDING_PROTOCOL)
|
||||
);
|
||||
//
|
||||
// Create various resources, UdpIo, Timer, and get Mac address
|
||||
//
|
||||
Status = gBS->CreateEvent (
|
||||
EVT_NOTIFY_SIGNAL | EVT_TIMER,
|
||||
TPL_CALLBACK,
|
||||
DhcpOnTimerTick,
|
||||
DhcpSb,
|
||||
&DhcpSb->Timer
|
||||
);
|
||||
|
||||
if (EFI_ERROR (Status)) {
|
||||
goto ON_ERROR;
|
||||
}
|
||||
|
||||
DhcpSb->UdpIo = UdpIoCreateIo (
|
||||
Controller,
|
||||
ImageHandle,
|
||||
DhcpConfigUdpIo,
|
||||
UDP_IO_UDP4_VERSION,
|
||||
NULL
|
||||
);
|
||||
|
||||
if (DhcpSb->UdpIo == NULL) {
|
||||
Status = EFI_OUT_OF_RESOURCES;
|
||||
goto ON_ERROR;
|
||||
}
|
||||
|
||||
DhcpSb->HwLen = (UINT8) DhcpSb->UdpIo->SnpMode.HwAddressSize;
|
||||
DhcpSb->HwType = DhcpSb->UdpIo->SnpMode.IfType;
|
||||
CopyMem (&DhcpSb->Mac, &DhcpSb->UdpIo->SnpMode.CurrentAddress, sizeof (DhcpSb->Mac));
|
||||
|
||||
*Service = DhcpSb;
|
||||
return EFI_SUCCESS;
|
||||
|
||||
ON_ERROR:
|
||||
Dhcp4CloseService (DhcpSb);
|
||||
FreePool (DhcpSb);
|
||||
|
||||
return Status;
|
||||
}
|
||||
|
||||
|
||||
/**
|
||||
Start this driver on ControllerHandle. This service is called by the
|
||||
EFI boot service ConnectController(). In order to make
|
||||
drivers as small as possible, there are a few calling restrictions for
|
||||
this service. ConnectController() must follow these
|
||||
calling restrictions. If any other agent wishes to call Start() it
|
||||
must also follow these calling restrictions.
|
||||
|
||||
@param[in] This Protocol instance pointer.
|
||||
@param[in] ControllerHandle Handle of device to bind driver to
|
||||
@param[in] RemainingDevicePath Optional parameter use to pick a specific child
|
||||
device to start.
|
||||
|
||||
@retval EFI_SUCCESS This driver is added to ControllerHandle
|
||||
@retval EFI_ALREADY_STARTED This driver is already running on ControllerHandle
|
||||
@retval other This driver does not support this device
|
||||
|
||||
**/
|
||||
EFI_STATUS
|
||||
EFIAPI
|
||||
Dhcp4DriverBindingStart (
|
||||
IN EFI_DRIVER_BINDING_PROTOCOL *This,
|
||||
IN EFI_HANDLE ControllerHandle,
|
||||
IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath OPTIONAL
|
||||
)
|
||||
{
|
||||
DHCP_SERVICE *DhcpSb;
|
||||
EFI_STATUS Status;
|
||||
|
||||
//
|
||||
// First: test for the DHCP4 Protocol
|
||||
//
|
||||
Status = gBS->OpenProtocol (
|
||||
ControllerHandle,
|
||||
&gEfiDhcp4ServiceBindingProtocolGuid,
|
||||
NULL,
|
||||
This->DriverBindingHandle,
|
||||
ControllerHandle,
|
||||
EFI_OPEN_PROTOCOL_TEST_PROTOCOL
|
||||
);
|
||||
|
||||
if (Status == EFI_SUCCESS) {
|
||||
return EFI_ALREADY_STARTED;
|
||||
}
|
||||
|
||||
Status = Dhcp4CreateService (ControllerHandle, This->DriverBindingHandle, &DhcpSb);
|
||||
|
||||
if (EFI_ERROR (Status)) {
|
||||
return Status;
|
||||
}
|
||||
ASSERT (DhcpSb != NULL);
|
||||
|
||||
//
|
||||
// Start the receiving
|
||||
//
|
||||
Status = UdpIoRecvDatagram (DhcpSb->UdpIo, DhcpInput, DhcpSb, 0);
|
||||
|
||||
if (EFI_ERROR (Status)) {
|
||||
goto ON_ERROR;
|
||||
}
|
||||
Status = gBS->SetTimer (DhcpSb->Timer, TimerPeriodic, TICKS_PER_SECOND);
|
||||
|
||||
if (EFI_ERROR (Status)) {
|
||||
goto ON_ERROR;
|
||||
}
|
||||
|
||||
//
|
||||
// Install the Dhcp4ServiceBinding Protocol onto ControlerHandle
|
||||
//
|
||||
Status = gBS->InstallMultipleProtocolInterfaces (
|
||||
&ControllerHandle,
|
||||
&gEfiDhcp4ServiceBindingProtocolGuid,
|
||||
&DhcpSb->ServiceBinding,
|
||||
NULL
|
||||
);
|
||||
|
||||
if (EFI_ERROR (Status)) {
|
||||
goto ON_ERROR;
|
||||
}
|
||||
|
||||
return Status;
|
||||
|
||||
ON_ERROR:
|
||||
Dhcp4CloseService (DhcpSb);
|
||||
FreePool (DhcpSb);
|
||||
return Status;
|
||||
}
|
||||
|
||||
/**
|
||||
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
|
||||
Dhcp4DestroyChildEntry (
|
||||
IN LIST_ENTRY *Entry,
|
||||
IN VOID *Context
|
||||
)
|
||||
{
|
||||
DHCP_PROTOCOL *Instance;
|
||||
EFI_SERVICE_BINDING_PROTOCOL *ServiceBinding;
|
||||
|
||||
if (Entry == NULL || Context == NULL) {
|
||||
return EFI_INVALID_PARAMETER;
|
||||
}
|
||||
|
||||
Instance = NET_LIST_USER_STRUCT_S (Entry, DHCP_PROTOCOL, Link, DHCP_PROTOCOL_SIGNATURE);
|
||||
ServiceBinding = (EFI_SERVICE_BINDING_PROTOCOL *) Context;
|
||||
|
||||
return ServiceBinding->DestroyChild (ServiceBinding, Instance->Handle);
|
||||
}
|
||||
|
||||
|
||||
/**
|
||||
Stop this driver on ControllerHandle. This service is called by the
|
||||
EFI boot service DisconnectController(). In order to
|
||||
make drivers as small as possible, there are a few calling
|
||||
restrictions for this service. DisconnectController()
|
||||
must follow these calling restrictions. If any other agent wishes
|
||||
to call Stop() it must also follow these calling restrictions.
|
||||
|
||||
@param[in] This Protocol instance pointer.
|
||||
@param[in] ControllerHandle Handle of device to stop driver on
|
||||
@param[in] NumberOfChildren Number of Handles in ChildHandleBuffer. If number of
|
||||
children is zero stop the entire bus driver.
|
||||
@param[in] ChildHandleBuffer List of Child Handles to Stop.
|
||||
|
||||
@retval EFI_SUCCESS This driver is removed ControllerHandle
|
||||
@retval other This driver was not removed from this device
|
||||
|
||||
**/
|
||||
EFI_STATUS
|
||||
EFIAPI
|
||||
Dhcp4DriverBindingStop (
|
||||
IN EFI_DRIVER_BINDING_PROTOCOL *This,
|
||||
IN EFI_HANDLE ControllerHandle,
|
||||
IN UINTN NumberOfChildren,
|
||||
IN EFI_HANDLE *ChildHandleBuffer
|
||||
)
|
||||
{
|
||||
EFI_SERVICE_BINDING_PROTOCOL *ServiceBinding;
|
||||
DHCP_SERVICE *DhcpSb;
|
||||
EFI_HANDLE NicHandle;
|
||||
EFI_STATUS Status;
|
||||
LIST_ENTRY *List;
|
||||
UINTN ListLength;
|
||||
|
||||
//
|
||||
// DHCP driver opens UDP child, So, the ControllerHandle is the
|
||||
// UDP child handle. locate the Nic handle first.
|
||||
//
|
||||
NicHandle = NetLibGetNicHandle (ControllerHandle, &gEfiUdp4ProtocolGuid);
|
||||
|
||||
if (NicHandle == NULL) {
|
||||
return EFI_SUCCESS;
|
||||
}
|
||||
|
||||
Status = gBS->OpenProtocol (
|
||||
NicHandle,
|
||||
&gEfiDhcp4ServiceBindingProtocolGuid,
|
||||
(VOID **) &ServiceBinding,
|
||||
This->DriverBindingHandle,
|
||||
NicHandle,
|
||||
EFI_OPEN_PROTOCOL_GET_PROTOCOL
|
||||
);
|
||||
|
||||
if (EFI_ERROR (Status)) {
|
||||
return EFI_DEVICE_ERROR;
|
||||
}
|
||||
|
||||
DhcpSb = DHCP_SERVICE_FROM_THIS (ServiceBinding);
|
||||
if (!IsListEmpty (&DhcpSb->Children)) {
|
||||
//
|
||||
// Destroy all the children instances before destory the service.
|
||||
//
|
||||
List = &DhcpSb->Children;
|
||||
Status = NetDestroyLinkList (
|
||||
List,
|
||||
Dhcp4DestroyChildEntry,
|
||||
ServiceBinding,
|
||||
&ListLength
|
||||
);
|
||||
if (EFI_ERROR (Status) || ListLength != 0) {
|
||||
Status = EFI_DEVICE_ERROR;
|
||||
}
|
||||
}
|
||||
|
||||
if (NumberOfChildren == 0 && !IsListEmpty (&DhcpSb->Children)) {
|
||||
Status = EFI_DEVICE_ERROR;
|
||||
}
|
||||
|
||||
if (NumberOfChildren == 0 && IsListEmpty (&DhcpSb->Children)) {
|
||||
//
|
||||
// Destroy the service itself if no child instance left.
|
||||
//
|
||||
DhcpSb->ServiceState = DHCP_DESTROY;
|
||||
|
||||
gBS->UninstallProtocolInterface (
|
||||
NicHandle,
|
||||
&gEfiDhcp4ServiceBindingProtocolGuid,
|
||||
ServiceBinding
|
||||
);
|
||||
|
||||
Dhcp4CloseService (DhcpSb);
|
||||
|
||||
if (gDhcpControllerNameTable != NULL) {
|
||||
FreeUnicodeStringTable (gDhcpControllerNameTable);
|
||||
gDhcpControllerNameTable = NULL;
|
||||
}
|
||||
FreePool (DhcpSb);
|
||||
|
||||
Status = EFI_SUCCESS;
|
||||
}
|
||||
|
||||
return Status;
|
||||
}
|
||||
|
||||
|
||||
/**
|
||||
Initialize a new DHCP instance.
|
||||
|
||||
@param DhcpSb The dhcp service instance
|
||||
@param Instance The dhcp instance to initialize
|
||||
|
||||
**/
|
||||
VOID
|
||||
DhcpInitProtocol (
|
||||
IN DHCP_SERVICE *DhcpSb,
|
||||
IN OUT DHCP_PROTOCOL *Instance
|
||||
)
|
||||
{
|
||||
Instance->Signature = DHCP_PROTOCOL_SIGNATURE;
|
||||
CopyMem (&Instance->Dhcp4Protocol, &mDhcp4ProtocolTemplate, sizeof (Instance->Dhcp4Protocol));
|
||||
InitializeListHead (&Instance->Link);
|
||||
Instance->Handle = NULL;
|
||||
Instance->Service = DhcpSb;
|
||||
Instance->InDestroy = FALSE;
|
||||
Instance->CompletionEvent = NULL;
|
||||
Instance->RenewRebindEvent = NULL;
|
||||
Instance->Token = NULL;
|
||||
Instance->UdpIo = NULL;
|
||||
Instance->ElaspedTime = 0;
|
||||
NetbufQueInit (&Instance->ResponseQueue);
|
||||
}
|
||||
|
||||
|
||||
/**
|
||||
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 available to create
|
||||
the child
|
||||
@retval other The child handle was not created
|
||||
|
||||
**/
|
||||
EFI_STATUS
|
||||
EFIAPI
|
||||
Dhcp4ServiceBindingCreateChild (
|
||||
IN EFI_SERVICE_BINDING_PROTOCOL *This,
|
||||
IN EFI_HANDLE *ChildHandle
|
||||
)
|
||||
{
|
||||
DHCP_SERVICE *DhcpSb;
|
||||
DHCP_PROTOCOL *Instance;
|
||||
EFI_STATUS Status;
|
||||
EFI_TPL OldTpl;
|
||||
VOID *Udp4;
|
||||
|
||||
if ((This == NULL) || (ChildHandle == NULL)) {
|
||||
return EFI_INVALID_PARAMETER;
|
||||
}
|
||||
|
||||
Instance = AllocatePool (sizeof (*Instance));
|
||||
|
||||
if (Instance == NULL) {
|
||||
return EFI_OUT_OF_RESOURCES;
|
||||
}
|
||||
|
||||
DhcpSb = DHCP_SERVICE_FROM_THIS (This);
|
||||
DhcpInitProtocol (DhcpSb, Instance);
|
||||
|
||||
//
|
||||
// Install DHCP4 onto ChildHandle
|
||||
//
|
||||
Status = gBS->InstallMultipleProtocolInterfaces (
|
||||
ChildHandle,
|
||||
&gEfiDhcp4ProtocolGuid,
|
||||
&Instance->Dhcp4Protocol,
|
||||
NULL
|
||||
);
|
||||
|
||||
if (EFI_ERROR (Status)) {
|
||||
FreePool (Instance);
|
||||
return Status;
|
||||
}
|
||||
|
||||
Instance->Handle = *ChildHandle;
|
||||
|
||||
//
|
||||
// Open the Udp4 protocol BY_CHILD.
|
||||
//
|
||||
Status = gBS->OpenProtocol (
|
||||
DhcpSb->UdpIo->UdpHandle,
|
||||
&gEfiUdp4ProtocolGuid,
|
||||
(VOID **) &Udp4,
|
||||
gDhcp4DriverBinding.DriverBindingHandle,
|
||||
Instance->Handle,
|
||||
EFI_OPEN_PROTOCOL_BY_CHILD_CONTROLLER
|
||||
);
|
||||
if (EFI_ERROR (Status)) {
|
||||
gBS->UninstallMultipleProtocolInterfaces (
|
||||
Instance->Handle,
|
||||
&gEfiDhcp4ProtocolGuid,
|
||||
&Instance->Dhcp4Protocol,
|
||||
NULL
|
||||
);
|
||||
|
||||
FreePool (Instance);
|
||||
return Status;
|
||||
}
|
||||
|
||||
OldTpl = gBS->RaiseTPL (TPL_CALLBACK);
|
||||
|
||||
InsertTailList (&DhcpSb->Children, &Instance->Link);
|
||||
DhcpSb->NumChildren++;
|
||||
|
||||
gBS->RestoreTPL (OldTpl);
|
||||
|
||||
return EFI_SUCCESS;
|
||||
}
|
||||
|
||||
|
||||
/**
|
||||
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
|
||||
Dhcp4ServiceBindingDestroyChild (
|
||||
IN EFI_SERVICE_BINDING_PROTOCOL *This,
|
||||
IN EFI_HANDLE ChildHandle
|
||||
)
|
||||
{
|
||||
DHCP_SERVICE *DhcpSb;
|
||||
DHCP_PROTOCOL *Instance;
|
||||
EFI_DHCP4_PROTOCOL *Dhcp;
|
||||
EFI_TPL OldTpl;
|
||||
EFI_STATUS Status;
|
||||
|
||||
if ((This == NULL) || (ChildHandle == NULL)) {
|
||||
return EFI_INVALID_PARAMETER;
|
||||
}
|
||||
|
||||
//
|
||||
// Retrieve the private context data structures
|
||||
//
|
||||
Status = gBS->OpenProtocol (
|
||||
ChildHandle,
|
||||
&gEfiDhcp4ProtocolGuid,
|
||||
(VOID **) &Dhcp,
|
||||
gDhcp4DriverBinding.DriverBindingHandle,
|
||||
ChildHandle,
|
||||
EFI_OPEN_PROTOCOL_GET_PROTOCOL
|
||||
);
|
||||
|
||||
if (EFI_ERROR (Status)) {
|
||||
return EFI_UNSUPPORTED;
|
||||
}
|
||||
|
||||
Instance = DHCP_INSTANCE_FROM_THIS (Dhcp);
|
||||
DhcpSb = DHCP_SERVICE_FROM_THIS (This);
|
||||
|
||||
if (Instance->Service != DhcpSb) {
|
||||
return EFI_INVALID_PARAMETER;
|
||||
}
|
||||
|
||||
//
|
||||
// A child can be destroyed more than once. For example,
|
||||
// Dhcp4DriverBindingStop will destroy all of its children.
|
||||
// when caller driver is being stopped, it will destroy the
|
||||
// dhcp child it opens.
|
||||
//
|
||||
if (Instance->InDestroy) {
|
||||
return EFI_SUCCESS;
|
||||
}
|
||||
|
||||
OldTpl = gBS->RaiseTPL (TPL_CALLBACK);
|
||||
Instance->InDestroy = TRUE;
|
||||
|
||||
//
|
||||
// Close the Udp4 protocol.
|
||||
//
|
||||
gBS->CloseProtocol (
|
||||
DhcpSb->UdpIo->UdpHandle,
|
||||
&gEfiUdp4ProtocolGuid,
|
||||
gDhcp4DriverBinding.DriverBindingHandle,
|
||||
ChildHandle
|
||||
);
|
||||
|
||||
//
|
||||
// Uninstall the DHCP4 protocol first to enable a top down destruction.
|
||||
//
|
||||
gBS->RestoreTPL (OldTpl);
|
||||
Status = gBS->UninstallProtocolInterface (
|
||||
ChildHandle,
|
||||
&gEfiDhcp4ProtocolGuid,
|
||||
Dhcp
|
||||
);
|
||||
OldTpl = gBS->RaiseTPL (TPL_CALLBACK);
|
||||
if (EFI_ERROR (Status)) {
|
||||
Instance->InDestroy = FALSE;
|
||||
|
||||
gBS->RestoreTPL (OldTpl);
|
||||
return Status;
|
||||
}
|
||||
|
||||
if (DhcpSb->ActiveChild == Instance) {
|
||||
DhcpYieldControl (DhcpSb);
|
||||
}
|
||||
|
||||
RemoveEntryList (&Instance->Link);
|
||||
DhcpSb->NumChildren--;
|
||||
|
||||
if (Instance->UdpIo != NULL) {
|
||||
UdpIoCleanIo (Instance->UdpIo);
|
||||
gBS->CloseProtocol (
|
||||
Instance->UdpIo->UdpHandle,
|
||||
&gEfiUdp4ProtocolGuid,
|
||||
Instance->Service->Image,
|
||||
Instance->Handle
|
||||
);
|
||||
UdpIoFreeIo (Instance->UdpIo);
|
||||
Instance->UdpIo = NULL;
|
||||
Instance->Token = NULL;
|
||||
}
|
||||
|
||||
gBS->RestoreTPL (OldTpl);
|
||||
|
||||
FreePool (Instance);
|
||||
return EFI_SUCCESS;
|
||||
}
|
||||
Reference in New Issue
Block a user