Ndis 协议驱动-Packet源码
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/*++
Copyright (c) 1990-2000 Microsoft Corporation
Module Name:
packet.c
Abstract:
Author:
Environment:
Kernel mode only.
Notes:
Future:
Revision History:
Fixed bugs and converted to NDIS 5.0. This driver handles
dynamic binding and unbinding to underlying NICs, receives
pnp and power management callbacks, and implements
ReceivePacketHandler.
- Eliyas Yakub June, 1999
--*/
#include "ntddk.h"
#include "ndis.h"
#include "ntddpack.h"
#include "packet.h"
#include "stdio.h"
NTSTATUS
DriverEntry(
IN PDRIVER_OBJECT DriverObject,
IN PUNICODE_STRING RegistryPath
)
/*++
Routine Description:
This routine initializes the Packet driver.
Arguments:
DriverObject - Pointer to driver object created by system.
RegistryPath - Pointer to the Unicode name of the registry path
for this driver.
Return Value:
NT Status code
--*/
{
NDIS_PROTOCOL_CHARACTERISTICS protocolChar;
NTSTATUS status = STATUS_SUCCESS;
NDIS_STRING protoName = NDIS_STRING_CONST("Packet");
UNICODE_STRING ntDeviceName;
UNICODE_STRING win32DeviceName;
BOOLEAN fSymbolicLink = FALSE;
PDEVICE_OBJECT deviceObject;
DebugPrint(("/n/nDriverEntry/n"));
Globals.DriverObject = DriverObject;
//
// Save the RegistryPath.
//
Globals.RegistryPath.MaximumLength = RegistryPath->Length +
sizeof(UNICODE_NULL);
Globals.RegistryPath.Length = RegistryPath->Length;
Globals.RegistryPath.Buffer = ExAllocatePool(
PagedPool,
Globals.RegistryPath.MaximumLength
);
if (!Globals.RegistryPath.Buffer) {
DebugPrint (("Couldn't allocate pool for registry path."));
return STATUS_INSUFFICIENT_RESOURCES;
}
RtlCopyUnicodeString(&Globals.RegistryPath, RegistryPath);
RtlInitUnicodeString(&ntDeviceName, NT_DEVICE_NAME);
//
// Create a control device object for this driver.
// Application can send an IOCTL to this device to get
// bound adapter information.
//
status = IoCreateDevice (DriverObject,
0,
&ntDeviceName,
FILE_DEVICE_UNKNOWN,
0,
FALSE,
&deviceObject);
if (!NT_SUCCESS (status)) {
//
// Either not enough memory to create a deviceobject or another
// deviceobject with the same name exits. This could happen
// if you install another instance of this device.
//
goto ERROR;
}
RtlInitUnicodeString(&win32DeviceName, DOS_DEVICE_NAME);
status = IoCreateSymbolicLink( &win32DeviceName, &ntDeviceName );
if (!NT_SUCCESS(status)) // If we couldn't create the link then
{ // abort installation.
goto ERROR;
}
fSymbolicLink = TRUE; // symboliclink is created
deviceObject->Flags |= DO_BUFFERED_IO;
Globals.ControlDeviceObject = deviceObject;
InitializeListHead(&Globals.AdapterList);
KeInitializeSpinLock(&Globals.GlobalLock);
//
// Initialize the protocol characterstic structure
//
NdisZeroMemory(&protocolChar,sizeof(NDIS_PROTOCOL_CHARACTERISTICS));
protocolChar.MajorNdisVersion = 5;
protocolChar.MinorNdisVersion = 0;
protocolChar.Name = protoName;
protocolChar.OpenAdapterCompleteHandler = PacketOpenAdapterComplete;
protocolChar.CloseAdapterCompleteHandler = PacketCloseAdapterComplete;
protocolChar.SendCompleteHandler = PacketSendComplete;
protocolChar.TransferDataCompleteHandler = PacketTransferDataComplete;
protocolChar.ResetCompleteHandler = PacketResetComplete;
protocolChar.RequestCompleteHandler = PacketRequestComplete;
protocolChar.ReceiveHandler = PacketReceiveIndicate;
protocolChar.ReceiveCompleteHandler = PacketReceiveComplete;
protocolChar.StatusHandler = PacketStatus;
protocolChar.StatusCompleteHandler = PacketStatusComplete;
protocolChar.BindAdapterHandler = PacketBindAdapter;
protocolChar.UnbindAdapterHandler = PacketUnbindAdapter;
protocolChar.UnloadHandler = NULL;
protocolChar.ReceivePacketHandler = PacketReceivePacket;
protocolChar.PnPEventHandler = PacketPNPHandler;
//
// Register as a protocol driver
//
NdisRegisterProtocol(
&status,
&Globals.NdisProtocolHandle,
&protocolChar,
sizeof(NDIS_PROTOCOL_CHARACTERISTICS));
if (status != NDIS_STATUS_SUCCESS) {
DebugPrint(("Failed to register protocol with NDIS/n"));
status = STATUS_UNSUCCESSFUL;
goto ERROR;
}
//
// Now set only the dispatch points we would like to handle.
//
DriverObject->MajorFunction[IRP_MJ_CREATE] = PacketOpen;
DriverObject->MajorFunction[IRP_MJ_CLOSE] = PacketClose;
DriverObject->MajorFunction[IRP_MJ_READ] = PacketRead;
DriverObject->MajorFunction[IRP_MJ_WRITE] = PacketWrite;
DriverObject->MajorFunction[IRP_MJ_CLEANUP] = PacketCleanup;
DriverObject->MajorFunction[IRP_MJ_DEVICE_CONTROL] = PacketIoControl;
DriverObject->DriverUnload = PacketUnload;
return(STATUS_SUCCESS);
ERROR:
if(deviceObject)
IoDeleteDevice(deviceObject);
if(fSymbolicLink)
IoDeleteSymbolicLink(&win32DeviceName);
if(Globals.RegistryPath.Buffer)
ExFreePool(Globals.RegistryPath.Buffer);
return status;
}
VOID
PacketUnload(
IN PDRIVER_OBJECT DriverObject
)
/*++
Routine Description:
Free all the allocated resources, etc.
Arguments:
DriverObject - pointer to a driver object.
Return Value:
VOID.
--*/
{
NDIS_STATUS status;
UNICODE_STRING win32DeviceName;
DebugPrint(("Unload Enter/n"));
//
// First delete the Control deviceobject and the corresponding
// symbolicLink
//
RtlInitUnicodeString(&win32DeviceName, DOS_DEVICE_NAME);
IoDeleteSymbolicLink(&win32DeviceName);
if(Globals.ControlDeviceObject)
IoDeleteDevice(Globals.ControlDeviceObject);
//
// Unbind from all the adapters. The system removes the driver code
// pages from the memory as soon as the unload returns. So you
// must wait for all the CloseAdapterCompleteHandler to finish
// before returning from the unload routine. You don't any callbacks
// to trigger after the driver is unloaded.
//
while(DriverObject->DeviceObject)
{
PacketUnbindAdapter(&status,
DriverObject->DeviceObject->DeviceExtension,
NULL);
}
if(Globals.RegistryPath.Buffer)
ExFreePool(Globals.RegistryPath.Buffer);
DebugPrint(("Deregister/n"));
NdisDeregisterProtocol(
&status,
Globals.NdisProtocolHandle
);
DebugPrint(("Unload Exit/n"));
}
NTSTATUS
PacketIoControl(
IN PDEVICE_OBJECT DeviceObject,
IN PIRP Irp
)
/*++
Routine Description:
This is the dispatch routine for Filter OID and Reset requests.
Arguments:
DeviceObject - Pointer to the device object.
Irp - Pointer to the request packet.
Return Value:
Status is returned.
--*/
{
POPEN_INSTANCE open;
PIO_STACK_LOCATION irpSp;
PINTERNAL_REQUEST pRequest;
ULONG functionCode;
NDIS_STATUS status;
ULONG dataLength =0;
DebugPrint(("IoControl/n"));
irpSp = IoGetCurrentIrpStackLocation(Irp);
functionCode=irpSp->Parameters.DeviceIoControl.IoControlCode;
//
// Check whether this request is to get bound adapter list.
//
if (functionCode == IOCTL_ENUM_ADAPTERS) {
//
// If the request is not made to the controlobject, fail
// the request.
//
if(DeviceObject != Globals.ControlDeviceObject) {
status = STATUS_INVALID_DEVICE_REQUEST;
} else {
status = PacketGetAdapterList(
Irp->AssociatedIrp.SystemBuffer,
irpSp->Parameters.DeviceIoControl.OutputBufferLength,
&dataLength
);
}
Irp->IoStatus.Status = status;
Irp->IoStatus.Information = dataLength;
IoCompleteRequest(Irp, IO_NO_INCREMENT);
return status;
}
//
// Increment the outstanding IRP count.
//
open = DeviceObject->DeviceExtension;
IoIncrement(open);
//
// Check to see whether you are still bound to the adapter
//
if(!open->Bound)
{
Irp->IoStatus.Status = status = STATUS_UNSUCCESSFUL;
IoCompleteRequest(Irp, IO_NO_INCREMENT);
IoDecrement(open);
return status;
}
DebugPrint(("Function code is %08lx buff size=%08lx %08lx/n",
functionCode,irpSp->Parameters.DeviceIoControl.InputBufferLength,
irpSp->Parameters.DeviceIoControl.OutputBufferLength));
//
// Important: Since we have marked the IRP pending, we must return
// STATUS_PENDING even we happen to complete the IRP synchronously.
//
IoMarkIrpPending(Irp);
if (functionCode == IOCTL_PROTOCOL_RESET) {
DebugPrint(("IoControl - Reset request/n"));
//
// Since NDIS doesn't have an interface to cancel a request
// pending at miniport, we cannot set a cancel routine.
// As a result if the application that made the request
// terminates, we wait in the Cleanup routine for all pending
// NDIS requests to complete.
//
ExInterlockedInsertTailList(
&open->ResetIrpList,
&Irp->Tail.Overlay.ListEntry,
&open->ResetQueueLock);
NdisReset(
&status,
open->AdapterHandle
);
if (status != NDIS_STATUS_PENDING) {
DebugPrint(("IoControl - ResetComplete being called/n"));
PacketResetComplete(
open,
status
);
}
} else {
//
// See if it is an Ndis request
//
PPACKET_OID_DATA OidData=Irp->AssociatedIrp.SystemBuffer;
pRequest = ExAllocatePool(NonPagedPool, sizeof(INTERNAL_REQUEST));
if(NULL == pRequest)
{
Irp->IoStatus.Status = STATUS_INSUFFICIENT_RESOURCES;
IoCompleteRequest (Irp, IO_NO_INCREMENT);
IoDecrement(open);
return STATUS_PENDING;
}
pRequest->Irp=Irp;
if (((functionCode == IOCTL_PROTOCOL_SET_OID)
|| (functionCode == IOCTL_PROTOCOL_QUERY_OID))
&&
(irpSp->Parameters.DeviceIoControl.InputBufferLength
== irpSp->Parameters.DeviceIoControl.OutputBufferLength)
&&
(irpSp->Parameters.DeviceIoControl.InputBufferLength
>= sizeof(PACKET_OID_DATA))
&&
(irpSp->Parameters.DeviceIoControl.InputBufferLength
>= sizeof(PACKET_OID_DATA)-1+OidData->Length)) {
DebugPrint(("IoControl: Request: Oid=%08lx, Length=%08lx/n",
OidData->Oid,OidData->Length));
//
// The buffer is valid
//
if (functionCode == IOCTL_PROTOCOL_SET_OID) {
pRequest->Request.RequestType=NdisRequestSetInformation;
pRequest->Request.DATA.SET_INFORMATION.Oid=OidData->Oid;
pRequest->Request.DATA.SET_INFORMATION.InformationBuffer=
OidData->Data;
pRequest->Request.DATA.SET_INFORMATION.InformationBufferLength=
OidData->Length;
} else {
pRequest->Request.RequestType=NdisRequestQueryInformation;
pRequest->Request.DATA.QUERY_INFORMATION.Oid= OidData->Oid;
pRequest->Request.DATA.QUERY_INFORMATION.InformationBuffer=
OidData->Data;
pRequest->Request.DATA.QUERY_INFORMATION.InformationBufferLength=
OidData->Length;
}
//
// submit the request
//
NdisRequest(
&status,
open->AdapterHandle,
&pRequest->Request
);
} else {
//
// Buffer too small. The irp is completed by
// PacketRequestComplete routine.
//
status=NDIS_STATUS_FAILURE;
pRequest->Request.DATA.SET_INFORMATION.BytesRead=0;
pRequest->Request.DATA.QUERY_INFORMATION.BytesWritten=0;
}
if (status != NDIS_STATUS_PENDING) {
DebugPrint(("Calling RequestCompleteHandler/n"));
PacketRequestComplete(
open,
&pRequest->Request,
status
);
}
}
return STATUS_PENDING;
}
VOID
PacketRequestComplete(
IN NDIS_HANDLE ProtocolBindingContext,
IN PNDIS_REQUEST NdisRequest,
IN NDIS_STATUS Status
)
/*++
Routine Description:
This routine is called when a protocol-initiated query or set
operation, begun with a call to NdisRequest that returned
NDIS_STATUS_PENDING, is completed.
Arguments:
Return Value:
--*/
{
POPEN_INSTANCE open;
PIO_STACK_LOCATION irpSp;
PIRP irp;
PINTERNAL_REQUEST pRequest;
UINT functionCode;
PPACKET_OID_DATA OidData;
DebugPrint(("RequestComplete/n"));
open = (POPEN_INSTANCE)ProtocolBindingContext;
pRequest=CONTAINING_RECORD(NdisRequest,INTERNAL_REQUEST,Request);
irp = pRequest->Irp;
if(Status == NDIS_STATUS_SUCCESS)
{
irpSp = IoGetCurrentIrpStackLocation(irp);
functionCode=irpSp->Parameters.DeviceIoControl.IoControlCode;
OidData = irp->AssociatedIrp.SystemBuffer;
if (functionCode == IOCTL_PROTOCOL_SET_OID) {
OidData->Length=pRequest->Request.DATA.SET_INFORMATION.BytesRead;
} else {
if (functionCode == IOCTL_PROTOCOL_QUERY_OID) {
OidData->Length=pRequest->Request.DATA.QUERY_INFORMATION.BytesWritten;
}
}
irp->IoStatus.Status = STATUS_SUCCESS;
irp->IoStatus.Information=irpSp->Parameters.DeviceIoControl.InputBufferLength;
} else {
irp->IoStatus.Status = STATUS_UNSUCCESSFUL;
irp->IoStatus.Information = 0;
}
ExFreePool(pRequest);
IoCompleteRequest(irp, IO_NO_INCREMENT);
IoDecrement(open);
return;
}
VOID
PacketStatus(
IN NDIS_HANDLE ProtocolBindingContext,
IN NDIS_STATUS Status,
IN PVOID StatusBuffer,
IN UINT StatusBufferSize
)
/*++
Routine Description:
This routine is called to handle status changes indicated
by the underlying NDIS driver.
Arguments:
Return Value:
--*/
{
DebugPrint(("Indication Status: %0x, StatusBufferSize: %d/n",
Status, StatusBufferSize));
return;
}
VOID
PacketStatusComplete(
IN NDIS_HANDLE ProtocolBindingContext
)
/*++
Routine Description:
This routine is called by NDIS, along with PacketStatus,
to report the start and end of an NDIS- or NIC-driver-
initiated status indicate operation.
Arguments:
Return Value:
--*/
{
DebugPrint(("StatusIndicationComplete/n"));
return;
}
NTSTATUS
PacketGetAdapterList(
IN PVOID Buffer,
IN ULONG Length,
IN OUT PULONG DataLength
)
/*++
Routine Description:
This routine walks the adapter list and gets the symbolic
link and NIC description and fills it in the Buffer.
The format of the information is given below.
Arguments:
Return Value:
--*/
{
ULONG requiredLength = 0, numOfAdapters = 0;
KIRQL oldIrql;
PLIST_ENTRY thisEntry, listHead;
POPEN_INSTANCE open;
DebugPrint(("Enter PacketGetAdapterList/n"));
KeAcquireSpinLock(&Globals.GlobalLock, &oldIrql);
//
// Walks the list to find out total space required for AdapterName
// and Symbolic Link.
//
listHead = &Globals.AdapterList;
for(thisEntry = listHead->Flink;
thisEntry != listHead;
thisEntry = thisEntry->Flink)
{
open = CONTAINING_RECORD(thisEntry, OPEN_INSTANCE, AdapterListEntry);
requiredLength += open->AdapterName.Length + sizeof(UNICODE_NULL);
requiredLength += open->SymbolicLink.Length + sizeof(UNICODE_NULL);
numOfAdapters++;
}
//
// We will return the data in the following format:
// numOfAdapters + One_Or_More("AdapterName/0" + "SymbolicLink/0") + UNICODE_NULL
// So let's include the numOfAdapters and UNICODE_NULL size
// to the total length.
//
requiredLength += sizeof(ULONG) + sizeof(UNICODE_NULL);
*DataLength = requiredLength;
if(requiredLength > Length) {
KeReleaseSpinLock(&Globals.GlobalLock, oldIrql);
return STATUS_BUFFER_TOO_SMALL;
}
*(PULONG)Buffer = numOfAdapters;
(PCHAR)Buffer += sizeof(ULONG);
//
// Copy the name and symbolic link of each adapter.
//
for(thisEntry = listHead->Flink;
thisEntry != listHead;
thisEntry = thisEntry->Flink)
{
open = CONTAINING_RECORD(thisEntry, OPEN_INSTANCE, AdapterListEntry);
RtlCopyMemory(Buffer, open->AdapterName.Buffer,
open->AdapterName.Length+sizeof(WCHAR));
(PCHAR)Buffer += open->AdapterName.Length+sizeof(WCHAR);
RtlCopyMemory(Buffer, open->SymbolicLink.Buffer,
open->SymbolicLink.Length+sizeof(WCHAR));
(PCHAR)Buffer += open->SymbolicLink.Length+sizeof(WCHAR);
}
*(PWCHAR)Buffer = UNICODE_NULL;
KeReleaseSpinLock(&Globals.GlobalLock, oldIrql);
return STATUS_SUCCESS;
}
VOID
PacketBindAdapter(
OUT PNDIS_STATUS Status,
IN NDIS_HANDLE BindContext,
IN PNDIS_STRING DeviceName,
IN PVOID SystemSpecific1,
IN PVOID SystemSpecific2
)
/*++
Routine Description:
Called by NDIS to bind to a miniport below.
Arguments:
Status - Return status of bind here.
BindContext - Can be passed to NdisCompleteBindAdapter
if this call is pended.
DeviceName - Device name to bind to. This is passed to
NdisOpenAdapter.
SystemSpecific1 - Can be passed to NdisOpenProtocolConfiguration to
read per-binding information
SystemSpecific2 - Unused for NDIS 4.0.
Return Value:
NDIS_STATUS_PENDING if this call is pended. In this case call
NdisCompleteBindAdapter to complete.
Anything else Completes this call synchronously
--*/
{
NDIS_STATUS status;
UINT mediumIndex;
USHORT length;
POPEN_INSTANCE open = NULL;
UNICODE_STRING unicodeDeviceName;
PDEVICE_OBJECT deviceObject = NULL;
PWSTR symbolicLink = NULL, deviceNameStr = NULL;
NDIS_MEDIUM mediumArray=NdisMedium802_3;// This sample only
//supports Ethernet medium.
DebugPrint(("Binding DeviceName %ws/n", DeviceName->Buffer));
do{
//
// Create a deviceobject for every adapter we bind to.
// To make a name for the deviceObject, we will append Packet_
// to the name portion of the input DeviceName.
//
unicodeDeviceName.Buffer = NULL;
length = DeviceName->Length + 7 * sizeof(WCHAR) + sizeof(UNICODE_NULL);
deviceNameStr = ExAllocatePool(NonPagedPool, length);
if (!deviceNameStr) {
DebugPrint(("Memory allocation for create symbolic failed/n"));
*Status = NDIS_STATUS_FAILURE;
break;
}
swprintf(deviceNameStr, L"//Device//Packet_%ws", &DeviceName->Buffer[8]);
RtlInitUnicodeString(&unicodeDeviceName, deviceNameStr);
DebugPrint(("Exported DeviceName %ws/n", unicodeDeviceName.Buffer));
//
// Create the deviceobject
//
status = IoCreateDevice(
Globals.DriverObject,
sizeof(OPEN_INSTANCE),
&unicodeDeviceName,
FILE_DEVICE_PROTOCOL,
0,
TRUE, // only one handle to the device at a time.
&deviceObject
);
if (status != STATUS_SUCCESS) {
DebugPrint(("CreateDevice Failed: %x/n", status));
*Status = NDIS_STATUS_FAILURE;
break;
}
deviceObject->Flags |= DO_DIRECT_IO;
open = (POPEN_INSTANCE) deviceObject->DeviceExtension;
open->DeviceObject = deviceObject;
//
// Create a symbolic link.
// We need to replace Device from /Device/Packet_{GUID} with DosDevices
// to create a symbolic link of the form /DosDevices/Packet_{GUID}
// There is a four character difference between these two
// strings.
//
length = unicodeDeviceName.Length + sizeof(UNICODE_NULL) +
(4 * sizeof(WCHAR));
symbolicLink = ExAllocatePool(NonPagedPool, length);
if (!symbolicLink) {
DebugPrint(("Memory allocation for create symbolic failed/n"));
*Status = NDIS_STATUS_FAILURE;
break;
}
swprintf(symbolicLink, L"//DosDevices//%ws",
&unicodeDeviceName.Buffer[8]);
RtlInitUnicodeString(&open->SymbolicLink,symbolicLink);
DebugPrint(("Symbolic Link: %ws/n", open->SymbolicLink.Buffer));
status = IoCreateSymbolicLink(
(PUNICODE_STRING) &open->SymbolicLink,
(PUNICODE_STRING) &unicodeDeviceName
);
if (status != STATUS_SUCCESS) {
DebugPrint(("Create symbolic failed/n"));
*Status = NDIS_STATUS_FAILURE;
break;
}
ExFreePool(unicodeDeviceName.Buffer);
unicodeDeviceName.Buffer = NULL;
//
// Allocate a packet pool for our xmit and receive packets
//
NdisAllocatePacketPool(
&status,
&open->PacketPool,
TRANSMIT_PACKETS,
sizeof(PACKET_RESERVED));
if (status != NDIS_STATUS_SUCCESS) {
DebugPrint(("Packet: Failed to allocate packet pool/n"));
break;
}
//
// Initializing the Event used for synchronizing open and close.
//
NdisInitializeEvent(&open->Event);
//
// List to hold irp's want to reset the adapter
//
InitializeListHead(&open->ResetIrpList);
//
// Initialize the spinlock used for synchronizing access
// to the reset list.
//
KeInitializeSpinLock(&open->ResetQueueLock);
//
// Initialize list for holding pending read requests
//
KeInitializeSpinLock(&open->RcvQSpinLock);
InitializeListHead(&open->RcvList);
//
// Now open the adapter below and complete the initialization
//
NdisOpenAdapter(Status,
&status,
&open->AdapterHandle,
&mediumIndex,
&mediumArray,
sizeof(mediumArray)/sizeof(NDIS_MEDIUM),
Globals.NdisProtocolHandle,
open,
DeviceName,
0,
NULL);
if(*Status == NDIS_STATUS_PENDING)
{
NdisWaitEvent(&open->Event, 0);
*Status = open->Status;
}
if(*Status != NDIS_STATUS_SUCCESS)
{
DebugPrint(("Failed to openAdapter/n"));
break;
}
open->IrpCount = 0;
InterlockedExchange( (PLONG)&open->Bound, TRUE );
NdisInitializeEvent(&open->CleanupEvent);
//
// Let the initial state of the event to be signalled state.
//
NdisSetEvent(&open->CleanupEvent);
//
// Save the the friendly name of the MAC driver
//
NdisQueryAdapterInstanceName(&open->AdapterName,
open->AdapterHandle);
DebugPrint(("Bound AdapterName %ws/n", open->AdapterName.Buffer));
open->Medium = mediumArray;
//
// Link this instance to the global adapterlist.
//
InitializeListHead(&open->AdapterListEntry);
ExInterlockedInsertTailList(&Globals.AdapterList,
&open->AdapterListEntry,
&Globals.GlobalLock);
//
// Clear the DO_DEVICE_INITIALIZING flag. This is required
// if you create deviceobjects outside of DriverEntry.
// Untill you do this, application cannot send I/O request.
//
deviceObject->Flags &= ~DO_DEVICE_INITIALIZING;
} while(FALSE);
if (*Status != NDIS_STATUS_SUCCESS)
{
if (open && open->PacketPool != NULL) {
NdisFreePacketPool(open->PacketPool);
}
if (deviceObject != NULL) {
IoDeleteDevice(deviceObject);
}
if(unicodeDeviceName.Buffer)
ExFreePool(unicodeDeviceName.Buffer);
if(symbolicLink) {
IoDeleteSymbolicLink(&open->SymbolicLink);
ExFreePool(open->SymbolicLink.Buffer);
}
}
DebugPrint(("Return BindAdapter :0x%x/n", *Status));
}
VOID
PacketUnbindAdapter(
OUT PNDIS_STATUS Status,
IN NDIS_HANDLE ProtocolBindingContext,
IN NDIS_HANDLE UnbindContext
)
/*++
Routine Description:
Called by NDIS when we are required to unbind to the adapter below.
Arguments:
Status Placeholder for return status
ProtocolBindingContext Pointer to the adapter structure
UnbindContext Context for NdisUnbindComplete() if this pends
Return Value:
--*/
{
POPEN_INSTANCE open =(POPEN_INSTANCE)ProtocolBindingContext;
KIRQL oldIrql;
DebugPrint(("PacketUnbindAdapter :%ws/n", open->AdapterName.Buffer));
if(open->AdapterHandle != NULL)
{
NdisResetEvent(&open->Event);
//
// Your are no longer bound to any adapter
//
InterlockedExchange( (PLONG) &open->Bound, FALSE );
//
// Cancel all the pending reads.
//
PacketCancelReadIrps(open->DeviceObject);
//
// Wait for all the outstanding IRPs to complete
//
DebugPrint(("Waiting on CleanupEvent/n"));
NdisWaitEvent(&open->CleanupEvent, 0);
NdisCloseAdapter(Status, open->AdapterHandle);
//
// Wait for it to complete
//
if(*Status == NDIS_STATUS_PENDING)
{
NdisWaitEvent(&open->Event, 0);
*Status = open->Status;
}
else
{
*Status = NDIS_STATUS_FAILURE;
ASSERT(0);
}
//
// Delink this instance from the global adapter list.
//
KeAcquireSpinLock(&Globals.GlobalLock, &oldIrql);
RemoveEntryList(&open->AdapterListEntry);
KeReleaseSpinLock(&Globals.GlobalLock, oldIrql);
NdisFreePacketPool(open->PacketPool);
NdisFreeMemory(open->AdapterName.Buffer, open->AdapterName.Length, 0);
IoDeleteSymbolicLink(&open->SymbolicLink);
ExFreePool(open->SymbolicLink.Buffer);
IoDeleteDevice(open->DeviceObject);
}
DebugPrint(("Exit PacketUnbindAdapter/n"));
}
VOID
PacketOpenAdapterComplete(
IN NDIS_HANDLE ProtocolBindingContext,
IN NDIS_STATUS Status,
IN NDIS_STATUS OpenErrorStatus
)
/*++
Routine Description:
Completion routine for NdisOpenAdapter issued from within the
PacketBindAdapter. Simply unblock the caller.
Arguments:
ProtocolBindingContext Pointer to the adapter
Status Status of the NdisOpenAdapter call
OpenErrorStatus Secondary status(ignored by us).
Return Value:
None
--*/
{
POPEN_INSTANCE open = ProtocolBindingContext;
DebugPrint(("Packet: OpenAdapterComplete/n"));
open->Status = Status;
NdisSetEvent(&open->Event);
return;
}
VOID
PacketCloseAdapterComplete(
IN NDIS_HANDLE ProtocolBindingContext,
IN NDIS_STATUS Status
)
/*++
Routine Description:
Completion routine for NdisCloseAdapter issued from within the
PacketUnBindAdapter. Simply unblock the caller.
Arguments:
ProtocolBindingContext Pointer to the adapter
Status Status of the NdisOpenAdapter call
Return Value:
None
--*/
{
POPEN_INSTANCE open = ProtocolBindingContext;
DebugPrint(("CloseAdapterComplete/n"));
open->Status = Status;
NdisSetEvent(&open->Event);
return;
}
NDIS_STATUS
PacketPNPHandler(
IN NDIS_HANDLE ProtocolBindingContext,
IN PNET_PNP_EVENT NetPnPEvent
)
/*++
Routine Description:
NDIS calls ProtocolPnPEvent to indicate a Plug and Play
event or a Power Management event.
All PNP Related OIDS(requests) are routed to this function.
Arguments:
ProtocolBindingContext Pointer to our adapter structure.
NetPnPEvent Pointer to a Net_PnP_Event
Return Value:
NDIS_STATUS_SUCCESS: as we do not do much here
--*/
{
POPEN_INSTANCE open =(POPEN_INSTANCE)ProtocolBindingContext;
NDIS_STATUS Status = NDIS_STATUS_SUCCESS;
PNET_DEVICE_POWER_STATE powerState;
DebugPrint(("PacketPNPHandler/n"));
powerState = (PNET_DEVICE_POWER_STATE)NetPnPEvent->Buffer;
//
// This will happen when all entities in the system need to be notified
//
//if(open == NULL)
//{
// return Status;
//}
switch(NetPnPEvent->NetEvent)
{
case NetEventSetPower :
DebugPrint(("NetEventSetPower/n"));
switch (*powerState) {
case NetDeviceStateD0:
Status = NDIS_STATUS_SUCCESS;
break;
default:
//
// We can't suspend, so we ask NDIS to Unbind us by
// returning this status:
//
Status = NDIS_STATUS_NOT_SUPPORTED;
break;
}
break;
case NetEventQueryPower :
DebugPrint(("NetEventQueryPower/n"));
break;
case NetEventQueryRemoveDevice :
DebugPrint(("NetEventQueryRemoveDevice /n"));
break;
case NetEventCancelRemoveDevice :
DebugPrint(("NetEventCancelRemoveDevice /n"));
break;
case NetEventReconfigure :
//
// The protocol should always succeed this event
// by returning NDIS_STATUS_SUCCESS
//
DebugPrint(("NetEventReconfigure/n"));
break;
case NetEventBindsComplete :
DebugPrint(("NetEventBindsComplete /n"));
break;
case NetEventPnPCapabilities :
DebugPrint(("NetEventPnPCapabilities /n"));
case NetEventBindList:
DebugPrint(("NetEventBindList /n"));
default:
Status = NDIS_STATUS_NOT_SUPPORTED;
break;
}
return Status;
}
VOID
IoIncrement (
IN OUT POPEN_INSTANCE Open
)
/*++
Routine Description:
This routine increments the number of requests the device receives
Arguments:
Open - pointer to the device extension.
Return Value:
--*/
{
LONG result;
result = InterlockedIncrement(&Open->IrpCount);
//DebugPrint(("IoIncrement %d/n", result));
//
// Need to clear event (when IrpCount bumps from 0 to 1)
//
if (result == 1) {
//
// We need to clear the event
//
NdisResetEvent(&Open->CleanupEvent);
}
return;
}
VOID
IoDecrement (
IN OUT POPEN_INSTANCE Open
)
/*++
Routine Description:
This routine decrements as it complete the request it receives
Arguments:
Open - pointer to the device extension.
Return Value:
--*/
{
LONG result;
result = InterlockedDecrement(&Open->IrpCount);
//DebugPrint(("IoDecrement %d/n", result));
if (result == 0) {
//
// Set the event when the count transition from 1 to 0.
//
NdisSetEvent (&Open->CleanupEvent);
}
return;
}
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