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/*++ BUILD Version: 0000 // Increment this if a change has global effects
Copyright (c) 1994 Microsoft Corporation
Module Name:
private.h
Abstract:
Private definitions for NdisTapi.sys
Author:
Dan Knudson (DanKn) 20-Feb-1994
Revision History:
--*/
//
// Various definitions
//
typedef enum _PROVIDER_STATUS
{
PROVIDER_STATUS_ONLINE,
PROVIDER_STATUS_OFFLINE,
PROVIDER_STATUS_PENDING_INIT
} PROVIDER_STATUS, *PPROVIDER_STATUS;
typedef NDIS_STATUS (*REQUEST_PROC)(NDIS_HANDLE, PNDIS_REQUEST);
typedef struct _PROVIDER_INFO
{
PROVIDER_STATUS Status;
NDIS_HANDLE ProviderHandle;
REQUEST_PROC RequestProc;
ULONG ProviderID;
ULONG NumDevices;
ULONG DeviceIDBase;
struct _PROVIDER_INFO *Next;
} PROVIDER_INFO, *PPROVIDER_INFO;
typedef enum _NDISTAPI_STATUS
{
NDISTAPI_STATUS_CONNECTED,
NDISTAPI_STATUS_DISCONNECTED,
NDISTAPI_STATUS_CONNECTING,
NDISTAPI_STATUS_DISCONNECTING
} NDISTAPI_STATUS, *PNDISTAPI_STATUS;
typedef struct _DEVICE_EXTENSION
{
//
// The following are set only in DriverEntry and are not
// modified elsewhere
//
//
// Pointer to the NdisTapi device object
//
PDEVICE_OBJECT DeviceObject;
//
// Length in bytes of the event data buf
//
ULONG EventDataQueueLength;
//
// Pointer to a circular event data buf
//
PCHAR EventData;
//
// Synchronizes access to the device extension following fields
//
KSPIN_LOCK SpinLock;
//
// Whether TAPI has the the connection wrapper open
//
NDISTAPI_STATUS Status;
//
// Event we use for synchronizing provider inits
//
KEVENT SyncEvent;
//
// The connection wrapper's device ID base as passed down by TAPI
// when it connected.
//
ULONG NdisTapiDeviceIDBase;
//
// The number of line devices we told told TAPI we supported when
// it opened us (some of which may not actually be online at any
// given time)
//
ULONG NdisTapiNumDevices;
//
// Whether we have an outstanding provider init request
//
BOOLEAN ProviderInitPending;
//
// Pointer to a list of registered providers. (Some may actually
// not be currently registered, but they were at one point so we've
// saved a placeholder for them should they come back online at some
// point.)
//
PPROVIDER_INFO Providers;
//
//
//
BOOLEAN CleanupWasInitiated;
//
// A special queue for QUERY/SET_INFO requests
//
KDEVICE_QUEUE DeviceQueue;
//
// Synchronizes access to the events buffer & related fields
//
KSPIN_LOCK EventSpinLock;
//
// Value return to provider for next NEWCALL msg
//
ULONG htCall;
//
// Outstanding get-events request
//
PIRP EventsRequestIrp;
//
// Pointer to next place to PUT event data (from provider)
//
PCHAR DataIn;
//
// Pointer to next place to GET event data (for user-mode request)
//
PCHAR DataOut;
//
// Number of valid events in queue
//
ULONG EventCount;
//
//
//
PFILE_OBJECT TapiSrvFileObject;
//
//
//
PFILE_OBJECT NCPAFileObject;
} DEVICE_EXTENSION, *PDEVICE_EXTENSION;
typedef struct _PROVIDER_REQUEST
{
NDIS_REQUEST NdisRequest;
PPROVIDER_INFO Provider;
//
// This field is a placeholder for an NDIS_TAPI_XXX structure, the
// first ULONG of which is always a request ID.
//
ULONG Data[1];
} PROVIDER_REQUEST, *PPROVIDER_REQUEST;
//
// Our global device extension
//
PDEVICE_EXTENSION DeviceExtension;
#if DBG
//
// A var which determines the verboseness of the msgs printed by DBGOUT()
//
//
ULONG NdisTapiDebugLevel = 0;
//
// DbgPrint wrapper
//
#define DBGOUT(arg) DbgPrt arg
#else
#define DBGOUT(arg)
#endif
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