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|
/** @file
ARP driver functions.
Copyright (c) 2006 - 2009, 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<BR>
http://opensource.org/licenses/bsd-license.php
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 "ArpDriver.h"
#include "ArpImpl.h"
EFI_DRIVER_BINDING_PROTOCOL gArpDriverBinding = {
ArpDriverBindingSupported,
ArpDriverBindingStart,
ArpDriverBindingStop,
0xa,
NULL,
NULL
};
/**
Create and initialize the arp service context data.
@param[in] ImageHandle The image handle representing the loaded driver
image.
@param[in] ControllerHandle The controller handle the driver binds to.
@param[in, out] ArpService Pointer to the buffer containing the arp service
context data.
@retval EFI_SUCCESS The arp service context is initialized.
@retval EFI_UNSUPPORTED The underlayer Snp mode type is not ethernet.
Failed to initialize the service context.
@retval other Failed to initialize the arp service context.
**/
EFI_STATUS
ArpCreateService (
IN EFI_HANDLE ImageHandle,
IN EFI_HANDLE ControllerHandle,
IN OUT ARP_SERVICE_DATA *ArpService
)
{
EFI_STATUS Status;
ASSERT (ArpService != NULL);
ArpService->Signature = ARP_SERVICE_DATA_SIGNATURE;
//
// Init the servicebinding protocol members.
//
ArpService->ServiceBinding.CreateChild = ArpServiceBindingCreateChild;
ArpService->ServiceBinding.DestroyChild = ArpServiceBindingDestroyChild;
//
// Save the handles.
//
ArpService->ImageHandle = ImageHandle;
ArpService->ControllerHandle = ControllerHandle;
//
// Create a MNP child instance.
//
Status = NetLibCreateServiceChild (
ControllerHandle,
ImageHandle,
&gEfiManagedNetworkServiceBindingProtocolGuid,
&ArpService->MnpChildHandle
);
if (EFI_ERROR (Status)) {
return Status;
}
//
// Open the MNP protocol.
//
Status = gBS->OpenProtocol (
ArpService->MnpChildHandle,
&gEfiManagedNetworkProtocolGuid,
(VOID **)&ArpService->Mnp,
ImageHandle,
ControllerHandle,
EFI_OPEN_PROTOCOL_BY_DRIVER
);
if (EFI_ERROR (Status)) {
goto ERROR_EXIT;
}
//
// Get the underlayer Snp mode data.
//
Status = ArpService->Mnp->GetModeData (ArpService->Mnp, NULL, &ArpService->SnpMode);
if ((Status != EFI_NOT_STARTED) && EFI_ERROR (Status)) {
goto ERROR_EXIT;
}
if (ArpService->SnpMode.IfType != NET_IFTYPE_ETHERNET) {
//
// Only support the ethernet.
//
Status = EFI_UNSUPPORTED;
goto ERROR_EXIT;
}
//
// Set the Mnp config parameters.
//
ArpService->MnpConfigData.ReceivedQueueTimeoutValue = 0;
ArpService->MnpConfigData.TransmitQueueTimeoutValue = 0;
ArpService->MnpConfigData.ProtocolTypeFilter = ARP_ETHER_PROTO_TYPE;
ArpService->MnpConfigData.EnableUnicastReceive = TRUE;
ArpService->MnpConfigData.EnableMulticastReceive = FALSE;
ArpService->MnpConfigData.EnableBroadcastReceive = TRUE;
ArpService->MnpConfigData.EnablePromiscuousReceive = FALSE;
ArpService->MnpConfigData.FlushQueuesOnReset = TRUE;
ArpService->MnpConfigData.EnableReceiveTimestamps = FALSE;
ArpService->MnpConfigData.DisableBackgroundPolling = FALSE;
//
// Configure the Mnp child.
//
Status = ArpService->Mnp->Configure (ArpService->Mnp, &ArpService->MnpConfigData);
if (EFI_ERROR (Status)) {
goto ERROR_EXIT;
}
//
// Create the event used in the RxToken.
//
Status = gBS->CreateEvent (
EVT_NOTIFY_SIGNAL,
TPL_NOTIFY,
ArpOnFrameRcvd,
ArpService,
&ArpService->RxToken.Event
);
if (EFI_ERROR (Status)) {
goto ERROR_EXIT;
}
//
// Create the Arp heartbeat timer.
//
Status = gBS->CreateEvent (
EVT_NOTIFY_SIGNAL | EVT_TIMER,
TPL_CALLBACK,
ArpTimerHandler,
ArpService,
&ArpService->PeriodicTimer
);
if (EFI_ERROR (Status)) {
goto ERROR_EXIT;
}
//
// Start the heartbeat timer.
//
Status = gBS->SetTimer (
ArpService->PeriodicTimer,
TimerPeriodic,
ARP_PERIODIC_TIMER_INTERVAL
);
if (EFI_ERROR (Status)) {
goto ERROR_EXIT;
}
//
// Init the lists.
//
InitializeListHead (&ArpService->ChildrenList);
InitializeListHead (&ArpService->PendingRequestTable);
InitializeListHead (&ArpService->DeniedCacheTable);
InitializeListHead (&ArpService->ResolvedCacheTable);
ERROR_EXIT:
return Status;
}
/**
Clean the arp service context data.
@param[in, out] ArpService Pointer to the buffer containing the arp service
context data.
@return None.
**/
VOID
ArpCleanService (
IN OUT ARP_SERVICE_DATA *ArpService
)
{
NET_CHECK_SIGNATURE (ArpService, ARP_SERVICE_DATA_SIGNATURE);
if (ArpService->PeriodicTimer != NULL) {
//
// Cancle and close the PeriodicTimer.
//
gBS->SetTimer (ArpService->PeriodicTimer, TimerCancel, 0);
gBS->CloseEvent (ArpService->PeriodicTimer);
}
if (ArpService->RxToken.Event != NULL) {
//
// Cancle the RxToken and close the event in the RxToken.
//
ArpService->Mnp->Cancel (ArpService->Mnp, NULL);
gBS->CloseEvent (ArpService->RxToken.Event);
}
if (ArpService->Mnp != NULL) {
//
// Reset the Mnp child and close the Mnp protocol.
//
ArpService->Mnp->Configure (ArpService->Mnp, NULL);
gBS->CloseProtocol (
ArpService->MnpChildHandle,
&gEfiManagedNetworkProtocolGuid,
ArpService->ImageHandle,
ArpService->ControllerHandle
);
}
if (ArpService->MnpChildHandle != NULL) {
//
// Destroy the mnp child.
//
NetLibDestroyServiceChild(
ArpService->ControllerHandle,
ArpService->ImageHandle,
&gEfiManagedNetworkServiceBindingProtocolGuid,
ArpService->MnpChildHandle
);
}
}
/**
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[in] This A pointer to the EFI_DRIVER_BINDING_PROTOCOL instance.
@param[in] 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[in] 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 acces. Currently not implemented.
@retval EFI_UNSUPPORTED The device specified by ControllerHandle and
RemainingDevicePath is not supported by the
driver specified by This.
**/
EFI_STATUS
EFIAPI
ArpDriverBindingSupported (
IN EFI_DRIVER_BINDING_PROTOCOL *This,
IN EFI_HANDLE ControllerHandle,
IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath OPTIONAL
)
{
EFI_STATUS Status;
//
// Test to see if Arp SB is already installed.
//
Status = gBS->OpenProtocol (
ControllerHandle,
&gEfiArpServiceBindingProtocolGuid,
NULL,
This->DriverBindingHandle,
ControllerHandle,
EFI_OPEN_PROTOCOL_TEST_PROTOCOL
);
if (Status == EFI_SUCCESS) {
return EFI_ALREADY_STARTED;
}
//
// Test to see if MNP SB is installed.
//
Status = gBS->OpenProtocol (
ControllerHandle,
&gEfiManagedNetworkServiceBindingProtocolGuid,
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[in] This A pointer to the EFI_DRIVER_BINDING_PROTOCOL instance.
@param[in] 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[in] 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_DEVICE_ERROR The device could not be started due to a device error.
Currently not implemented.
@retval EFI_OUT_OF_RESOURCES The request could not be completed due to a lack of
resources.
@retval Others The driver failded to start the device.
**/
EFI_STATUS
EFIAPI
ArpDriverBindingStart (
IN EFI_DRIVER_BINDING_PROTOCOL *This,
IN EFI_HANDLE ControllerHandle,
IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath OPTIONAL
)
{
EFI_STATUS Status;
ARP_SERVICE_DATA *ArpService;
//
// Allocate a zero pool for ArpService.
//
ArpService = AllocateZeroPool (sizeof(ARP_SERVICE_DATA));
if (ArpService == NULL) {
return EFI_OUT_OF_RESOURCES;
}
//
// Initialize the arp service context data.
//
Status = ArpCreateService (This->DriverBindingHandle, ControllerHandle, ArpService);
if (EFI_ERROR (Status)) {
goto ERROR;
}
//
// Install the ARP service binding protocol.
//
Status = gBS->InstallMultipleProtocolInterfaces (
&ControllerHandle,
&gEfiArpServiceBindingProtocolGuid,
&ArpService->ServiceBinding,
NULL
);
if (EFI_ERROR (Status)) {
goto ERROR;
}
//
// OK, start to receive arp packets from Mnp.
//
Status = ArpService->Mnp->Receive (ArpService->Mnp, &ArpService->RxToken);
if (EFI_ERROR (Status)) {
goto ERROR;
}
return Status;
ERROR:
//
// On error, clean the arp service context data, and free the memory allocated.
//
ArpCleanService (ArpService);
FreePool (ArpService);
return Status;
}
/**
Stop this driver on ControllerHandle.
Release the control of this controller and remove the IScsi functions. 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[in] This A pointer to the EFI_DRIVER_BINDING_PROTOCOL instance.
@param[in] 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[in] NumberOfChildren The number of child device handles in ChildHandleBuffer.
Not used.
@param[in] ChildHandleBuffer An array of child handles to be freed. May be NULL
if NumberOfChildren is 0.Not used.
@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
ArpDriverBindingStop (
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;
ARP_SERVICE_DATA *ArpService;
ARP_INSTANCE_DATA *Instance;
//
// Get the NicHandle which the arp servicebinding is installed on.
//
NicHandle = NetLibGetNicHandle (ControllerHandle, &gEfiManagedNetworkProtocolGuid);
if (NicHandle == NULL) {
return EFI_DEVICE_ERROR;
}
//
// Try to get the arp servicebinding protocol on the NicHandle.
//
Status = gBS->OpenProtocol (
NicHandle,
&gEfiArpServiceBindingProtocolGuid,
(VOID **)&ServiceBinding,
This->DriverBindingHandle,
ControllerHandle,
EFI_OPEN_PROTOCOL_GET_PROTOCOL
);
if (EFI_ERROR (Status)) {
DEBUG ((EFI_D_ERROR, "ArpDriverBindingStop: Open ArpSb failed, %r.\n", Status));
return EFI_DEVICE_ERROR;
}
ArpService = ARP_SERVICE_DATA_FROM_THIS (ServiceBinding);
if (NumberOfChildren == 0) {
//
// Uninstall the ARP ServiceBinding protocol.
//
gBS->UninstallMultipleProtocolInterfaces (
NicHandle,
&gEfiArpServiceBindingProtocolGuid,
&ArpService->ServiceBinding,
NULL
);
//
// Clean the arp servicebinding context data and free the memory allocated.
//
ArpCleanService (ArpService);
FreePool (ArpService);
} else {
while (!IsListEmpty (&ArpService->ChildrenList)) {
Instance = NET_LIST_HEAD (&ArpService->ChildrenList, ARP_INSTANCE_DATA, List);
ServiceBinding->DestroyChild (ServiceBinding, Instance->Handle);
}
ASSERT (IsListEmpty (&ArpService->PendingRequestTable));
ASSERT (IsListEmpty (&ArpService->DeniedCacheTable));
ASSERT (IsListEmpty (&ArpService->ResolvedCacheTable));
}
return EFI_SUCCESS;
}
/**
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
ArpServiceBindingCreateChild (
IN EFI_SERVICE_BINDING_PROTOCOL *This,
IN EFI_HANDLE *ChildHandle
)
{
EFI_STATUS Status;
ARP_SERVICE_DATA *ArpService;
ARP_INSTANCE_DATA *Instance;
VOID *Mnp;
EFI_TPL OldTpl;
if ((This == NULL) || (ChildHandle == NULL)) {
return EFI_INVALID_PARAMETER;
}
ArpService = ARP_SERVICE_DATA_FROM_THIS (This);
//
// Allocate memory for the instance context data.
//
Instance = AllocateZeroPool (sizeof(ARP_INSTANCE_DATA));
if (Instance == NULL) {
DEBUG ((EFI_D_ERROR, "ArpSBCreateChild: Failed to allocate memory for Instance.\n"));
return EFI_OUT_OF_RESOURCES;
}
//
// Init the instance context data.
//
ArpInitInstance (ArpService, Instance);
//
// Install the ARP protocol onto the ChildHandle.
//
Status = gBS->InstallMultipleProtocolInterfaces (
ChildHandle,
&gEfiArpProtocolGuid,
(VOID *)&Instance->ArpProto,
NULL
);
if (EFI_ERROR (Status)) {
DEBUG ((EFI_D_ERROR, "ArpSBCreateChild: faild to install ARP protocol, %r.\n", Status));
FreePool (Instance);
return Status;
}
//
// Save the ChildHandle.
//
Instance->Handle = *ChildHandle;
//
// Open the Managed Network protocol BY_CHILD.
//
Status = gBS->OpenProtocol (
ArpService->MnpChildHandle,
&gEfiManagedNetworkProtocolGuid,
(VOID **) &Mnp,
gArpDriverBinding.DriverBindingHandle,
Instance->Handle,
EFI_OPEN_PROTOCOL_BY_CHILD_CONTROLLER
);
if (EFI_ERROR (Status)) {
goto ERROR;
}
OldTpl = gBS->RaiseTPL (TPL_CALLBACK);
//
// Insert the instance into children list managed by the arp service context data.
//
InsertTailList (&ArpService->ChildrenList, &Instance->List);
ArpService->ChildrenNumber++;
gBS->RestoreTPL (OldTpl);
ERROR:
if (EFI_ERROR (Status)) {
gBS->CloseProtocol (
ArpService->MnpChildHandle,
&gEfiManagedNetworkProtocolGuid,
gArpDriverBinding.DriverBindingHandle,
Instance->Handle
);
gBS->UninstallMultipleProtocolInterfaces (
Instance->Handle,
&gEfiArpProtocolGuid,
&Instance->ArpProto,
NULL
);
//
// Free the allocated memory.
//
FreePool (Instance);
}
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 not a valid UEFI Handle.
@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
ArpServiceBindingDestroyChild (
IN EFI_SERVICE_BINDING_PROTOCOL *This,
IN EFI_HANDLE ChildHandle
)
{
EFI_STATUS Status;
ARP_SERVICE_DATA *ArpService;
ARP_INSTANCE_DATA *Instance;
EFI_ARP_PROTOCOL *Arp;
EFI_TPL OldTpl;
if ((This == NULL) || (ChildHandle == NULL)) {
return EFI_INVALID_PARAMETER;
}
ArpService = ARP_SERVICE_DATA_FROM_THIS (This);
//
// Get the arp protocol.
//
Status = gBS->OpenProtocol (
ChildHandle,
&gEfiArpProtocolGuid,
(VOID **)&Arp,
ArpService->ImageHandle,
ChildHandle,
EFI_OPEN_PROTOCOL_GET_PROTOCOL
);
if (EFI_ERROR (Status)) {
return EFI_UNSUPPORTED;
}
Instance = ARP_INSTANCE_DATA_FROM_THIS (Arp);
if (Instance->Destroyed) {
return EFI_SUCCESS;
}
//
// Use the Destroyed as a flag to avoid re-entrance.
//
Instance->Destroyed = TRUE;
//
// Close the Managed Network protocol.
//
gBS->CloseProtocol (
ArpService->MnpChildHandle,
&gEfiManagedNetworkProtocolGuid,
gArpDriverBinding.DriverBindingHandle,
ChildHandle
);
//
// Uninstall the ARP protocol.
//
Status = gBS->UninstallMultipleProtocolInterfaces (
ChildHandle,
&gEfiArpProtocolGuid,
&Instance->ArpProto,
NULL
);
if (EFI_ERROR (Status)) {
DEBUG ((EFI_D_ERROR, "ArpSBDestroyChild: Failed to uninstall the arp protocol, %r.\n",
Status));
Instance->Destroyed = FALSE;
return Status;
}
OldTpl = gBS->RaiseTPL (TPL_CALLBACK);
if (Instance->Configured) {
//
// Delete the related cache entry.
//
ArpDeleteCacheEntry (Instance, FALSE, NULL, TRUE);
//
// Reset the instance configuration.
//
ArpConfigureInstance (Instance, NULL);
}
//
// Remove this instance from the ChildrenList.
//
RemoveEntryList (&Instance->List);
ArpService->ChildrenNumber--;
gBS->RestoreTPL (OldTpl);
FreePool (Instance);
return Status;
}
/**
The entry point for Arp driver which installs the driver binding and component name
protocol on its ImageHandle.
@param[in] ImageHandle The image handle of the driver.
@param[in] SystemTable The system table.
@retval EFI_SUCCESS if the driver binding and component name protocols
are successfully
@retval Others Failed to install the protocols.
**/
EFI_STATUS
EFIAPI
ArpDriverEntryPoint (
IN EFI_HANDLE ImageHandle,
IN EFI_SYSTEM_TABLE *SystemTable
)
{
return EfiLibInstallDriverBindingComponentName2 (
ImageHandle,
SystemTable,
&gArpDriverBinding,
ImageHandle,
&gArpComponentName,
&gArpComponentName2
);
}
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