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/*++
Copyright (c) Microsoft Corporation. All Rights Reserved.
Module Name:
SxBase.h
Abstract:
This file contains the common code for building a switch extension. This
file includes all the standard NDIS handling and exposes a function based
interface for the control path and data path. This also has reusable code
for basic operations such as pause/resume handling etc.
--*/
extern NDIS_STRING SxExtensionFriendlyName;
extern NDIS_STRING SxExtensionGuid;
typedef enum _SX_SWITCH_DATAFLOW_STATE
{
SxSwitchPaused,
SxSwitchRunning
} SX_SWITCH_DATAFLOW_STATE, *PSX_SWITCH_DATAFLOW_STATE;
typedef enum _SX_SWITCH_CONTROFLOW_STATE
{
SxSwitchUnknown,
SxSwitchAttached,
SxSwitchDetached
} SX_SWITCH_CONTROLFLOW_STATE, *PSX_SWITCH_CONTROLFLOW_STATE;
typedef struct _SX_SWITCH_OBJECT
{
//
// The Link *must* always be the first field.
//
LIST_ENTRY Link;
//
// The extension context is the context used in the specific logic
// of this extension.
// This is allocated and returned in SxExtSwitchCreate
//
PNDIS_HANDLE ExtensionContext;
//
// Ndis related fields.
//
NDIS_HANDLE NdisFilterHandle;
NDIS_SWITCH_CONTEXT NdisSwitchContext;
NDIS_SWITCH_OPTIONAL_HANDLERS NdisSwitchHandlers;
//
// Switch state.
//
SX_SWITCH_DATAFLOW_STATE DataFlowState;
SX_SWITCH_CONTROLFLOW_STATE ControlFlowState;
//
// Management fields.
//
volatile LONG PendingInjectedNblCount;
volatile LONG PendingOidCount;
//
// Control Path Management.
//
PNDIS_SWITCH_NIC_OID_REQUEST OldNicRequest;
} SX_SWITCH_OBJECT, *PSX_SWITCH_OBJECT;
typedef struct _SX_OID_REQUEST
{
NDIS_OID_REQUEST NdisOidRequest;
NDIS_EVENT ReqEvent;
NDIS_STATUS Status;
ULONG BytesNeeded;
} SX_OID_REQUEST, *PSX_OID_REQUEST;
typedef struct _FILTER_DEVICE_EXTENSION
{
ULONG Signature;
NDIS_HANDLE Handle;
} FILTER_DEVICE_EXTENSION, *PFILTER_DEVICE_EXTENSION;
//
// Function prototypes
//
DRIVER_INITIALIZE DriverEntry;
DRIVER_UNLOAD SxNdisUnload;
FILTER_SET_OPTIONS SxNdisSetOptions;
FILTER_SET_MODULE_OPTIONS SxNdisSetFilterModuleOptions;
FILTER_ATTACH SxNdisAttach;
FILTER_DETACH SxNdisDetach;
FILTER_PAUSE SxNdisPause;
FILTER_RESTART SxNdisRestart;
FILTER_OID_REQUEST SxNdisOidRequest;
FILTER_CANCEL_OID_REQUEST SxNdisCancelOidRequest;
FILTER_OID_REQUEST_COMPLETE SxNdisOidRequestComplete;
FILTER_SEND_NET_BUFFER_LISTS SxNdisSendNetBufferLists;
FILTER_RETURN_NET_BUFFER_LISTS SxNdisReturnNetBufferLists;
FILTER_SEND_NET_BUFFER_LISTS_COMPLETE SxNdisSendNetBufferListsComplete;
FILTER_RECEIVE_NET_BUFFER_LISTS SxNdisReceiveNetBufferLists;
FILTER_CANCEL_SEND_NET_BUFFER_LISTS SxNdisCancelSendNetBufferLists;
FILTER_STATUS SxNdisStatus;
FILTER_NET_PNP_EVENT SxNdisNetPnPEvent;
VOID
SxpNdisCompleteInternalOidRequest(
_In_ PSX_SWITCH_OBJECT Switch,
_In_ PNDIS_OID_REQUEST NdisRequest,
_In_ NDIS_STATUS Status
);
//
// Some debug stuff.
//
#define DL_EXTRA_LOUD 20
#define DL_VERY_LOUD 10
#define DL_LOUD 8
#define DL_INFO 6
#define DL_TRACE 5
#define DL_WARN 4
#define DL_ERROR 2
#define DL_FATAL 0
#if DBG
extern ULONG SxDebugLevel;
#define DEBUGP(lev, stmt) \
{ \
if ((lev) <= SxDebugLevel) \
{ \
DbgPrint("%S: ",SxExtServiceName); DbgPrint stmt; \
} \
}
#else
#define DEBUGP(lev, stmt)
#endif
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