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audk/Nt32Pkg/SnpNt32Dxe/SnpNt32.c

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/** @file
Copyright (c) 2006 - 2007, Intel Corporation
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
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.
Module Name:
SnpNt32.c
Abstract:
-**/
#include "SnpNt32.h"
EFI_DRIVER_BINDING_PROTOCOL gSnpNt32DriverBinding = {
SnpNt32DriverBindingSupported,
SnpNt32DriverBindingStart,
SnpNt32DriverBindingStop,
0xa,
NULL,
NULL
};
SNPNT32_GLOBAL_DATA gSnpNt32GlobalData = {
SNP_NT32_DRIVER_SIGNATURE, // Signature
{
NULL,
NULL
}, // InstanceList
NULL, // WinNtThunk
NULL, // NetworkLibraryHandle
{
0
}, // NtNetUtilityTable
{
0,
0,
0
}, // Lock
//
// Private functions
//
SnpNt32InitializeGlobalData, // InitializeGlobalData
SnpNt32InitializeInstanceData, // InitializeInstanceData
SnpNt32CloseInstance // CloseInstance
};
/**
Test to see if this driver supports ControllerHandle.
@param This Protocol instance pointer.
@param ControllerHandle Handle of device to test.
@param RemainingDevicePath Optional parameter use to pick a specific child
device to start.
@retval EFI_SUCCES This driver supports this device.
@retval other This driver does not support this device.
**/
EFI_STATUS
EFIAPI
SnpNt32DriverBindingSupported (
IN EFI_DRIVER_BINDING_PROTOCOL * This,
IN EFI_HANDLE ControllerHandle,
IN EFI_DEVICE_PATH_PROTOCOL * RemainingDevicePath OPTIONAL
)
{
SNPNT32_GLOBAL_DATA *GlobalData;
NET_LIST_ENTRY *Entry;
SNPNT32_INSTANCE_DATA *Instance;
GlobalData = &gSnpNt32GlobalData;
NET_LIST_FOR_EACH (Entry, &GlobalData->InstanceList) {
Instance = NET_LIST_USER_STRUCT_S (Entry, SNPNT32_INSTANCE_DATA, Entry, SNP_NT32_INSTANCE_SIGNATURE);
if (Instance->DeviceHandle == ControllerHandle) {
return EFI_SUCCESS;
}
}
return EFI_UNSUPPORTED;
}
/**
Start this driver on ControllerHandle.
@param This Protocol instance pointer.
@param ControllerHandle Handle of device to bind driver to.
@param RemainingDevicePath Optional parameter use to pick a specific child
device to start.
@retval EFI_SUCCES This driver is added to ControllerHandle.
**/
EFI_STATUS
EFIAPI
SnpNt32DriverBindingStart (
IN EFI_DRIVER_BINDING_PROTOCOL * This,
IN EFI_HANDLE ControllerHandle,
IN EFI_DEVICE_PATH_PROTOCOL * RemainingDevicePath OPTIONAL
)
{
return EFI_SUCCESS;
}
/**
Stop this driver on ControllerHandle.
@param This Protocol instance pointer.
@param ControllerHandle Handle of device to stop driver on.
@param NumberOfChildren Number of Handles in ChildHandleBuffer. If number
of children is zero stop the entire bus driver.
@param ChildHandleBuffer List of Child Handles to Stop.
@retval EFI_SUCCES This driver is removed ControllerHandle.
**/
EFI_STATUS
EFIAPI
SnpNt32DriverBindingStop (
IN EFI_DRIVER_BINDING_PROTOCOL *This,
IN EFI_HANDLE ControllerHandle,
IN UINTN NumberOfChildren,
IN EFI_HANDLE *ChildHandleBuffer
)
{
return EFI_SUCCESS;
}
/**
Start the SnpNt32 interface.
@param This Context pointer.
@retval EFI_SUCCESS The interface is started.
**/
EFI_STATUS
SnpNt32Start (
IN EFI_SIMPLE_NETWORK_PROTOCOL *This
)
{
return EFI_SUCCESS;
}
/**
Stop the SnpNt32 interface.
@param This Context pointer.
@retval EFI_SUCCESS The interface is stopped.
**/
EFI_STATUS
SnpNt32Stop (
IN EFI_SIMPLE_NETWORK_PROTOCOL *This
)
{
return EFI_SUCCESS;
}
/**
Initialize the SnpNt32 interface.
@param This Context pointer.
@param ExtraRxBufferSize Number of extra receive buffer.
@param ExtraTxBufferSize Number of extra transmit buffer.
@retval EFI_SUCCESS The interface is initialized.
**/
EFI_STATUS
SnpNt32Initialize (
IN EFI_SIMPLE_NETWORK_PROTOCOL *This,
IN UINTN ExtraRxBufferSize OPTIONAL,
IN UINTN ExtraTxBufferSize OPTIONAL
)
{
return EFI_SUCCESS;
}
/**
Reset the snpnt32 interface.
@param This Context pointer.
@param ExtendedVerification Not implemented.
@retval EFI_SUCCESS The interface is reseted.
**/
EFI_STATUS
SnpNt32Reset (
IN EFI_SIMPLE_NETWORK_PROTOCOL *This,
IN BOOLEAN ExtendedVerification
)
{
return EFI_SUCCESS;
}
/**
Shut down the snpnt32 interface.
@param This Context pointer.
@retval EFI_SUCCESS The interface is shut down.
**/
EFI_STATUS
SnpNt32Shutdown (
IN EFI_SIMPLE_NETWORK_PROTOCOL *This
)
{
return EFI_SUCCESS;
}
/**
Change the interface's receive filter setting.
@param This Context pointer.
@param EnableBits The receive filters to enable.
@param DisableBits The receive filters to disable
@param ResetMcastFilter Reset the multicast filters or not.
@param McastFilterCount The count of multicast filter to set.
@param McastFilter Pointer to the arrya of multicast addresses to set.
@retval EFI_SUCCESS The receive filter is updated.
@retval EFI_ACCESS_DENIED The snpnt32 lock is already owned by another
routine.
@retval EFI_DEVICE_ERROR Failed to update the receive filter.
**/
EFI_STATUS
SnpNt32ReceiveFilters (
IN EFI_SIMPLE_NETWORK_PROTOCOL *This,
IN UINT32 EnableBits,
IN UINT32 DisableBits,
IN BOOLEAN ResetMcastFilter,
IN UINTN McastFilterCount OPTIONAL,
IN EFI_MAC_ADDRESS *McastFilter OPTIONAL
)
{
SNPNT32_INSTANCE_DATA *Instance;
SNPNT32_GLOBAL_DATA *GlobalData;
INT32 ReturnValue;
Instance = SNP_NT32_INSTANCE_DATA_FROM_SNP_THIS (This);
GlobalData = Instance->GlobalData;
if (EFI_ERROR (NET_TRYLOCK (&GlobalData->Lock))) {
return EFI_ACCESS_DENIED;
}
ReturnValue = GlobalData->NtNetUtilityTable.SetReceiveFilter (
Instance->InterfaceInfo.InterfaceIndex,
EnableBits,
McastFilterCount,
McastFilter
);
NET_UNLOCK (&GlobalData->Lock);
if (ReturnValue <= 0) {
return EFI_DEVICE_ERROR;
}
return EFI_SUCCESS;
}
/**
Change or reset the mac address of the interface.
@param This Context pointer.
@param reset Reset the mac address to the original one or not.
@param NewMacAddr Pointer to the new mac address to set.
@retval EFI_UNSUPPORTED Not supported yet.
**/
EFI_STATUS
SnpNt32StationAddress (
IN EFI_SIMPLE_NETWORK_PROTOCOL *This,
IN BOOLEAN Reset,
IN EFI_MAC_ADDRESS *NewMacAddr OPTIONAL
)
{
return EFI_UNSUPPORTED;
}
/**
Get or reset the statistics data.
@param This Context pointer.
@param Reset Reset the statistics or not.
@param StatisticsSize The size of the buffer used to receive the
statistics data.
@param StatisticsTable Pointer to the table used to receive the statistics
data.
@retval EFI_UNSUPPORTED Not supported yet.
**/
EFI_STATUS
SnpNt32Statistics (
IN EFI_SIMPLE_NETWORK_PROTOCOL * This,
IN BOOLEAN Reset,
IN OUT UINTN *StatisticsSize OPTIONAL,
IN OUT EFI_NETWORK_STATISTICS *StatisticsTable OPTIONAL
)
{
return EFI_UNSUPPORTED;
}
/**
Convert a multicast ip address to the multicast mac address.
@param This Context pointer.
@param Ipv6 The Ip is an Ipv6 address or not.
@param Ip Pointer to the Ip address to convert.
@param Mac Pointer to the buffer used to hold the converted
mac address.
@retval EFI_UNSUPPORTED Not supported yet.
**/
EFI_STATUS
SnpNt32McastIptoMac (
IN EFI_SIMPLE_NETWORK_PROTOCOL *This,
IN BOOLEAN Ipv6,
IN EFI_IP_ADDRESS *Ip,
OUT EFI_MAC_ADDRESS *Mac
)
{
return EFI_UNSUPPORTED;
}
/**
Read or write the nv data.
@param This Context pinter.
@param ReadOrWrite Read or write the nv data.
@param Offset The offset to the start of the nv data.
@param BufferSize Size of the buffer.
@param Buffer Pointer to the buffer containing the data to write
or used to receive the data read.
@retval EFI_UNSUPPORTED Not supported yet.
**/
EFI_STATUS
SnpNt32Nvdata (
IN EFI_SIMPLE_NETWORK_PROTOCOL *This,
IN BOOLEAN ReadOrWrite,
IN UINTN Offset,
IN UINTN BufferSize,
IN OUT VOID *Buffer
)
{
return EFI_UNSUPPORTED;
}
/**
Get the status information of the interface.
@param This Context pointer.
@param InterruptStatus The storage to hold the interrupt status.
@param TxBuffer Pointer to get the list of pointers of previously
transmitted buffers whose transmission was
completed asynchrnously.
@retval EFI_SUCCESS The status is got.
**/
EFI_STATUS
SnpNt32GetStatus (
IN EFI_SIMPLE_NETWORK_PROTOCOL *This,
OUT UINT32 *InterruptStatus,
OUT VOID **TxBuffer
)
{
if (TxBuffer != NULL) {
*((UINT8 **) TxBuffer) = (UINT8 *) 1;
}
if (InterruptStatus != NULL) {
*InterruptStatus = EFI_SIMPLE_NETWORK_TRANSMIT_INTERRUPT;
}
return EFI_SUCCESS;
}
/**
Transmit a packet.
@param This Context pointer.
@param HeaderSize The media header size contained in the packet
buffer.
@param BufferSize The size of the packet buffer.
@param Buffer Pointer to the buffer containing the packet data.
@param SrcAddr If non null, points to the source address of this
packet.
@param DestAddr If non null, points to the destination address of
this packet.
@param Protocol The protocol type of this packet.
@retval EFI_SUCCESS The packet is transmitted or put into the transmit
queue.
@retval other Some error occurs.
**/
EFI_STATUS
SnpNt32Transmit (
IN EFI_SIMPLE_NETWORK_PROTOCOL *This,
IN UINTN HeaderSize,
IN UINTN BufferSize,
IN VOID *Buffer,
IN EFI_MAC_ADDRESS *SrcAddr OPTIONAL,
IN EFI_MAC_ADDRESS *DestAddr OPTIONAL,
IN UINT16 *Protocol OPTIONAL
)
{
SNPNT32_INSTANCE_DATA *Instance;
SNPNT32_GLOBAL_DATA *GlobalData;
INT32 ReturnValue;
Instance = SNP_NT32_INSTANCE_DATA_FROM_SNP_THIS (This);
GlobalData = Instance->GlobalData;
if ((HeaderSize != 0) && (SrcAddr == NULL)) {
SrcAddr = &Instance->Mode.CurrentAddress;
}
if (EFI_ERROR (NET_TRYLOCK (&GlobalData->Lock))) {
return EFI_ACCESS_DENIED;
}
ReturnValue = GlobalData->NtNetUtilityTable.Transmit (
Instance->InterfaceInfo.InterfaceIndex,
HeaderSize,
BufferSize,
Buffer,
SrcAddr,
DestAddr,
Protocol
);
NET_UNLOCK (&GlobalData->Lock);
if (ReturnValue < 0) {
return EFI_DEVICE_ERROR;
}
return EFI_SUCCESS;
}
/**
Receive network data.
@param This Context pointer.
@param HeaderSize Optional parameter and is a pointer to the header
portion of the data received.
@param BuffSize Pointer to the length of the Buffer on entry and
contains the length of the received data on return
@param Buffer Pointer to the memory for the received data
@param SourceAddr Optional parameter, is a pointer to contain the
source ethernet address on return
@param DestinationAddr Optional parameter, is a pointer to contain the
destination ethernet address on return.
@param Protocol Optional parameter, is a pointer to contain the
Protocol type from the ethernet header on return.
@retval EFI_SUCCESS A packet is received and put into the buffer.
@retval EFI_BUFFER_TOO_SMALL The provided buffer is too small to receive the
packet.
@retval EFI_NOT_READY There is no packet received.
**/
EFI_STATUS
SnpNt32Receive (
IN EFI_SIMPLE_NETWORK_PROTOCOL *This,
OUT UINTN *HeaderSize,
IN OUT UINTN *BuffSize,
OUT VOID *Buffer,
OUT EFI_MAC_ADDRESS *SourceAddr,
OUT EFI_MAC_ADDRESS *DestinationAddr,
OUT UINT16 *Protocol
)
{
SNPNT32_INSTANCE_DATA *Instance;
SNPNT32_GLOBAL_DATA *GlobalData;
INT32 ReturnValue;
Instance = SNP_NT32_INSTANCE_DATA_FROM_SNP_THIS (This);
GlobalData = Instance->GlobalData;
ASSERT (GlobalData->NtNetUtilityTable.Receive != NULL);
if (EFI_ERROR (NET_TRYLOCK (&GlobalData->Lock))) {
return EFI_ACCESS_DENIED;
}
ReturnValue = GlobalData->NtNetUtilityTable.Receive (
Instance->InterfaceInfo.InterfaceIndex,
BuffSize,
Buffer
);
NET_UNLOCK (&GlobalData->Lock);
if (ReturnValue < 0) {
if (ReturnValue == -100) {
return EFI_BUFFER_TOO_SMALL;
}
return EFI_DEVICE_ERROR;
} else if (ReturnValue == 0) {
return EFI_NOT_READY;
}
if (HeaderSize != NULL) {
*HeaderSize = 14;
}
if (SourceAddr != NULL) {
NetZeroMem (SourceAddr, sizeof (EFI_MAC_ADDRESS));
NetCopyMem (SourceAddr, ((UINT8 *) Buffer) + 6, 6);
}
if (DestinationAddr != NULL) {
NetZeroMem (DestinationAddr, sizeof (EFI_MAC_ADDRESS));
NetCopyMem (DestinationAddr, ((UINT8 *) Buffer), 6);
}
if (Protocol != NULL) {
*Protocol = NTOHS (*((UINT16 *) (((UINT8 *) Buffer) + 12)));
}
return EFI_SUCCESS;
}
SNPNT32_INSTANCE_DATA gSnpNt32InstanceTemplate = {
SNP_NT32_INSTANCE_SIGNATURE, // Signature
{
NULL,
NULL
}, // Entry
NULL, // GlobalData
NULL, // DeviceHandle
NULL, // DevicePath
{ // Snp
EFI_SIMPLE_NETWORK_PROTOCOL_REVISION, // Revision
SnpNt32Start, // Start
SnpNt32Stop, // Stop
SnpNt32Initialize, // Initialize
SnpNt32Reset, // Reset
SnpNt32Shutdown, // Shutdown
SnpNt32ReceiveFilters, // ReceiveFilters
SnpNt32StationAddress, // StationAddress
SnpNt32Statistics, // Statistics
SnpNt32McastIptoMac, // MCastIpToMac
SnpNt32Nvdata, // NvData
SnpNt32GetStatus, // GetStatus
SnpNt32Transmit, // Transmit
SnpNt32Receive, // Receive
NULL, // WaitForPacket
NULL // Mode
},
{ // Mode
EfiSimpleNetworkInitialized, // State
NET_ETHER_ADDR_LEN, // HwAddressSize
NET_ETHER_HEADER_SIZE, // MediaHeaderSize
1500, // MaxPacketSize
0, // NvRamSize
0, // NvRamAccessSize
0, // ReceiveFilterMask
0, // ReceiveFilterSetting
MAX_MCAST_FILTER_CNT, // MaxMCastFilterCount
0, // MCastFilterCount
{
0
}, // MCastFilter
{
0
}, // CurrentAddress
{
0
}, // BroadcastAddress
{
0
}, // PermanentAddress
NET_IFTYPE_ETHERNET, // IfType
FALSE, // MacAddressChangeable
FALSE, // MultipleTxSupported
FALSE, // MediaPresentSupported
TRUE // MediaPresent
},
{
0
} // InterfaceInfo
};
/**
Initialize the driver's global data.
@param This Pointer to the global context data.
@retval EFI_SUCCESS The global data is initialized.
@retval EFI_NOT_FOUND The required DLL is not found.
**/
EFI_STATUS
SnpNt32InitializeGlobalData (
IN SNPNT32_GLOBAL_DATA *This
)
{
EFI_STATUS Status;
CHAR16 *DllFileNameU;
UINT32 Index;
INT32 ReturnValue;
BOOLEAN NetUtilityLibInitDone;
NT_NET_INTERFACE_INFO NetInterfaceInfoBuffer[MAX_INTERFACE_INFO_NUMBER];
SNPNT32_INSTANCE_DATA *Instance;
NET_LIST_ENTRY *Entry;
UINT32 InterfaceCount;
ASSERT (This != NULL);
NetUtilityLibInitDone = FALSE;
InterfaceCount = MAX_INTERFACE_INFO_NUMBER;
NetListInit (&This->InstanceList);
NET_LOCK_INIT (&This->Lock);
//
// Get the WinNT thunk
//
Status = gBS->LocateProtocol (&gEfiWinNtThunkProtocolGuid, NULL, &This->WinNtThunk);
if (EFI_ERROR (Status)) {
return Status;
}
ASSERT (This->WinNtThunk != NULL);
DllFileNameU = NETWORK_LIBRARY_NAME_U;
//
// Load network utility library
//
This->NetworkLibraryHandle = This->WinNtThunk->LoadLibraryEx (DllFileNameU, NULL, 0);
if (NULL == This->NetworkLibraryHandle) {
return EFI_NOT_FOUND;
}
This->NtNetUtilityTable.Initialize = (NT_NET_INITIALIZE) This->WinNtThunk->GetProcAddress (
This->NetworkLibraryHandle,
NETWORK_LIBRARY_INITIALIZE
);
if (NULL == This->NtNetUtilityTable.Initialize) {
Status = EFI_NOT_FOUND;
goto ErrorReturn;
}
This->NtNetUtilityTable.Finalize = (NT_NET_FINALIZE) This->WinNtThunk->GetProcAddress (
This->NetworkLibraryHandle,
NETWORK_LIBRARY_FINALIZE
);
if (NULL == This->NtNetUtilityTable.Finalize) {
Status = EFI_NOT_FOUND;
goto ErrorReturn;
}
This->NtNetUtilityTable.SetReceiveFilter = (NT_NET_SET_RECEIVE_FILTER) This->WinNtThunk->GetProcAddress (
This->NetworkLibraryHandle,
NETWORK_LIBRARY_SET_RCV_FILTER
);
if (NULL == This->NtNetUtilityTable.SetReceiveFilter) {
Status = EFI_NOT_FOUND;
goto ErrorReturn;
}
This->NtNetUtilityTable.Receive = (NT_NET_RECEIVE) This->WinNtThunk->GetProcAddress (
This->NetworkLibraryHandle,
NETWORK_LIBRARY_RECEIVE
);
if (NULL == This->NtNetUtilityTable.Receive) {
Status = EFI_NOT_FOUND;
goto ErrorReturn;
}
This->NtNetUtilityTable.Transmit = (NT_NET_TRANSMIT) This->WinNtThunk->GetProcAddress (
This->NetworkLibraryHandle,
NETWORK_LIBRARY_TRANSMIT
);
if (NULL == This->NtNetUtilityTable.Transmit) {
Status = EFI_NOT_FOUND;
goto ErrorReturn;
}
//
// Initialize the network utility library
// And enumerate the interfaces in NT32 host
//
ReturnValue = This->NtNetUtilityTable.Initialize (&InterfaceCount, &NetInterfaceInfoBuffer[0]);
if (ReturnValue <= 0) {
Status = EFI_DEVICE_ERROR;
goto ErrorReturn;
}
NetUtilityLibInitDone = TRUE;
if (InterfaceCount == 0) {
Status = EFI_NOT_FOUND;
goto ErrorReturn;
}
//
// Create fake SNP instances
//
for (Index = 0; Index < InterfaceCount; Index++) {
Instance = NetAllocatePool (sizeof (SNPNT32_INSTANCE_DATA));
if (NULL == Instance) {
Status = EFI_OUT_OF_RESOURCES;
goto ErrorReturn;
}
//
// Copy the content from a template
//
NetCopyMem (Instance, &gSnpNt32InstanceTemplate, sizeof (SNPNT32_INSTANCE_DATA));
//
// Set the interface information.
//
Instance->InterfaceInfo = NetInterfaceInfoBuffer[Index];
//
// Initialize this instance
//
Status = This->InitializeInstanceData (This, Instance);
if (EFI_ERROR (Status)) {
NetFreePool (Instance);
goto ErrorReturn;
}
//
// Insert this instance into the instance list
//
NetListInsertTail (&This->InstanceList, &Instance->Entry);
}
return EFI_SUCCESS;
ErrorReturn:
while (!NetListIsEmpty (&This->InstanceList)) {
Entry = This->InstanceList.ForwardLink;
Instance = NET_LIST_USER_STRUCT_S (Entry, SNPNT32_INSTANCE_DATA, Entry, SNP_NT32_INSTANCE_SIGNATURE);
NetListRemoveEntry (Entry);
This->CloseInstance (This, Instance);
NetFreePool (Instance);
}
if (NetUtilityLibInitDone) {
ASSERT (This->WinNtThunk != NULL);
if (This->NtNetUtilityTable.Finalize != NULL) {
This->NtNetUtilityTable.Finalize ();
This->NtNetUtilityTable.Finalize = NULL;
}
}
return Status;
}
/**
Initialize the snpnt32 driver instance.
@param This Pointer to the SnpNt32 global data.
@param Instance Pointer to the instance context data.
@retval EFI_SUCCESS The driver instance is initialized.
**/
EFI_STATUS
SnpNt32InitializeInstanceData (
IN SNPNT32_GLOBAL_DATA *This,
IN SNPNT32_INSTANCE_DATA *Instance
)
{
EFI_STATUS Status;
EFI_DEV_PATH EndNode;
EFI_DEV_PATH Node;
Instance->GlobalData = This;
Instance->Snp.Mode = &Instance->Mode;
//
// Set broadcast address
//
SetMem (&Instance->Mode.BroadcastAddress, sizeof (EFI_MAC_ADDRESS), 0xFF);
//
// Copy Current/PermanentAddress MAC address
//
Instance->Mode.CurrentAddress = Instance->InterfaceInfo.MacAddr;
Instance->Mode.PermanentAddress = Instance->InterfaceInfo.MacAddr;
//
// Since the fake SNP is based on a real NIC, to avoid conflict with the host
// NIC network stack, we use a different MAC address.
// So just change the last byte of the MAC address for the real NIC.
//
Instance->Mode.CurrentAddress.Addr[NET_ETHER_ADDR_LEN - 1]++;
//
// Create a fake device path for the instance
//
NetZeroMem (&Node, sizeof (Node));
Node.DevPath.Type = MESSAGING_DEVICE_PATH;
Node.DevPath.SubType = MSG_MAC_ADDR_DP;
SetDevicePathNodeLength (&Node.DevPath, sizeof (MAC_ADDR_DEVICE_PATH));
NetCopyMem (
&Node.MacAddr.MacAddress,
&Instance->Mode.CurrentAddress,
sizeof (EFI_MAC_ADDRESS)
);
Node.MacAddr.IfType = Instance->Mode.IfType;
SetDevicePathEndNode (&EndNode.DevPath);
Instance->DevicePath = AppendDevicePathNode (
&EndNode.DevPath,
&Node.DevPath
);
//
// Create a fake device handle for the fake SNP
//
Status = gBS->InstallMultipleProtocolInterfaces (
&Instance->DeviceHandle,
&gEfiSimpleNetworkProtocolGuid,
&Instance->Snp,
&gEfiDevicePathProtocolGuid,
Instance->DevicePath,
NULL
);
if (EFI_ERROR (Status)) {
goto ErrorReturn;
}
return EFI_SUCCESS;
ErrorReturn:
return Status;
}
/**
Close the SnpNt32 driver instance.
@param This Pointer to the SnpNt32 global data.
@param Instance Pointer to the instance context data.
@retval EFI_SUCCESS The instance is closed.
**/
EFI_STATUS
SnpNt32CloseInstance (
IN SNPNT32_GLOBAL_DATA *This,
IN SNPNT32_INSTANCE_DATA *Instance
)
{
ASSERT (This != NULL);
ASSERT (Instance != NULL);
gBS->UninstallMultipleProtocolInterfaces (
Instance->DeviceHandle,
&gEfiSimpleNetworkProtocolGuid,
&Instance->Snp,
&gEfiDevicePathProtocolGuid,
Instance->DevicePath,
NULL
);
if (Instance->DevicePath != NULL) {
gBS->FreePool (Instance->DevicePath);
}
return EFI_SUCCESS;
}
/**
Unload the SnpNt32 driver.
@param ImageHandle The handle of the driver image.
@retval EFI_SUCCESS The driver is unloaded.
@retval other Some error occurs.
**/
EFI_STATUS
EFIAPI
SnpNt32Unload (
IN EFI_HANDLE ImageHandle
)
{
EFI_STATUS Status;
SNPNT32_GLOBAL_DATA *This;
NET_LIST_ENTRY *Entry;
SNPNT32_INSTANCE_DATA *Instance;
This = &gSnpNt32GlobalData;
Status = NetLibDefaultUnload (ImageHandle);
if (EFI_ERROR (Status)) {
return Status;
}
while (!NetListIsEmpty (&This->InstanceList)) {
//
// Walkthrough the interfaces and remove all the SNP instance
//
Entry = This->InstanceList.ForwardLink;
Instance = NET_LIST_USER_STRUCT_S (Entry, SNPNT32_INSTANCE_DATA, Entry, SNP_NT32_INSTANCE_SIGNATURE);
NetListRemoveEntry (Entry);
This->CloseInstance (This, Instance);
NetFreePool (Instance);
}
if (This->NtNetUtilityTable.Finalize != NULL) {
This->NtNetUtilityTable.Finalize ();
}
This->WinNtThunk->FreeLibrary (This->NetworkLibraryHandle);
return EFI_SUCCESS;
}
EFI_STATUS
InitializeSnpNt32river (
IN EFI_HANDLE ImageHandle,
IN EFI_SYSTEM_TABLE *SystemTable
)
/*++
Routine Description:
Install DriverBinding Protocol for the Win NT Bus driver on the drivers
image handle.
Arguments:
ImageHandle - The handle of this image.
SystemTable - Pointer to the EFI system table.
Returns:
EFI_SUCEESS - The protocols are installed and the SnpNt32 is initialized.
other - Some error occurs.
--*/
{
EFI_STATUS Status;
//
// Install the Driver Protocols
//
Status = EfiLibInstallDriverBindingComponentName2 (
ImageHandle,
SystemTable,
&gSnpNt32DriverBinding,
ImageHandle,
&gSnpNt32DriverComponentName,
&gSnpNt32DriverComponentName2
);
if (EFI_ERROR (Status)) {
return Status;
}
//
// Initialize the global data
//
Status = SnpNt32InitializeGlobalData (&gSnpNt32GlobalData);
if (EFI_ERROR (Status)) {
SnpNt32Unload (ImageHandle);
}
return Status;
}
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