211 lines
7 KiB
C
211 lines
7 KiB
C
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/*++
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Copyright (c) 1989-1993 Microsoft Corporation
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Module Name:
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spxdev.h
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Abstract:
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This module contains definitions specific to the
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SPX module of the ISN transport.
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Author:
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Adam Barr (adamba ) Original Version
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Nikhil Kamkolkar (nikhilk) 17-November-1993
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Environment:
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Kernel mode
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Revision History:
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--*/
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// Hash buckets for SPX_ADDR done using socket number
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#define NUM_SPXADDR_HASH_BUCKETS 8
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#define NUM_SPXADDR_HASH_MASK 7
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#define NUM_SPXCONN_HASH_BUCKETS 8
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#define NUM_SPXCONN_HASH_MASK 7
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// This structure defines the per-device structure for SPX
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// (one of these is allocated globally).
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#define DREF_CREATE 0
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#define DREF_LOADED 1
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#define DREF_ADAPTER 2
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#define DREF_ADDRESS 3
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#define DREF_ORPHAN 4
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#define DREF_TOTAL 5
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typedef struct _DEVICE {
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PDEVICE_OBJECT dev_DevObj; // the I/O system's device object.
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#if DBG
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ULONG dev_RefTypes[DREF_TOTAL];
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#endif
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CSHORT dev_Type; // type of this structure
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USHORT dev_Size; // size of this structure
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#if DBG
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UCHAR dev_Signature1[4]; // contains "SPX1"
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#endif
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// activity count/this provider.
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LONG dev_RefCount;
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UCHAR dev_State;
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// number of adapters IPX is bound to.
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USHORT dev_Adapters;
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// GLOBAL lock for reference count (used in ExInterlockedXxx calls).
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CTELock dev_Interlock;
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CTELock dev_Lock;
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// Hash table of lists of addresses opened on this device
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struct _SPX_ADDR * dev_AddrHashTable[NUM_SPXADDR_HASH_BUCKETS];
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// List of all active connections, later this be a tree.
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struct _SPX_CONN_FILE * dev_GlobalActiveConnList[NUM_SPXCONN_HASH_BUCKETS];
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USHORT dev_NextConnId;
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// Other configuration parameters.
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// Where the current socket allocation is.
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USHORT dev_CurrentSocket;
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// Our node and network.
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UCHAR dev_Network[4];
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UCHAR dev_Node[6];
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// Pointer to the config information from registry
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PCONFIG dev_ConfigInfo;
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// Control channel identifier
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ULONG dev_CcId;
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// These are kept around for error logging, and stored right
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// after this structure.
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PWCHAR dev_DeviceName;
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#if defined(_PNP_POWER)
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USHORT dev_DeviceNameLen;
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#else
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ULONG dev_DeviceNameLen;
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#endif _PNP_POWER
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#if DBG
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UCHAR dev_Signature2[4]; // contains "SPX2"
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#endif
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// Handle to ndis buffer pool for spx stack.
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NDIS_HANDLE dev_NdisBufferPoolHandle;
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// registration handle with tdi clients.
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#if defined(_PNP_POWER)
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HANDLE dev_TdiRegistrationHandle;
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#endif _PNP_POWER
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// This interlock is used to guard access to the statistics
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// define below.
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KSPIN_LOCK dev_StatInterlock; // for ULONG quantities
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KSPIN_LOCK dev_StatSpinLock; // for LARGE_INTEGER quantities
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// Counters for most of the statistics that SPX maintains;
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// some of these are kept elsewhere. Including the structure
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// itself wastes a little space but ensures that the alignment
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// inside the structure is correct.
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TDI_PROVIDER_STATISTICS dev_Stat;
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// This resource guards access to the ShareAccess
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// and SecurityDescriptor fields in addresses.
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ERESOURCE dev_AddrResource;
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// The following structure contains statistics counters for use
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// by TdiQueryInformation and TdiSetInformation. They should not
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// be used for maintenance of internal data structures.
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TDI_PROVIDER_INFO dev_ProviderInfo; // information about this provider.
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} DEVICE, * PDEVICE;
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//
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// As part of "doing it ourselves" theme as opposed to the DeviceExtension code,
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// we declare a global SpxDevice that will be used by all.
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//
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//PDEVICE SpxDevice;
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//PDEVICE_OBJECT DeviceObject;
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// device state definitions
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#if defined(_PNP_POWER)
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#define DEVICE_STATE_CLOSED 0x00 // Initial state
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#define DEVICE_STATE_LOADED 0x01 // Loaded and bound to IPX but no adapters
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#define DEVICE_STATE_OPEN 0x02 // Fully operational
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#define DEVICE_STATE_STOPPING 0x03 // Unload has been initiated, The I/O system
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// will not call us until nobody above has Netbios open.
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#else
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#define DEVICE_STATE_CLOSED 0x00
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#define DEVICE_STATE_OPEN 0x01
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#define DEVICE_STATE_STOPPING 0x02
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#endif _PNP_POWER
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// SPX device name
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#define SPX_DEVICE_NAME L"\\Device\\NwlnkSpx"
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#define SPX_TDI_RESOURCES 9
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// MACROS
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#if DBG
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#define SpxReferenceDevice(_Device, _Type) \
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{ \
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(VOID)SPX_ADD_ULONG ( \
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&(_Device)->dev_RefTypes[_Type], \
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1, \
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&SpxGlobalInterlock); \
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\
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(VOID)InterlockedIncrement ( \
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&(_Device)->dev_RefCount); \
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}
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#define SpxDereferenceDevice(_Device, _Type) \
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{ \
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(VOID)SPX_ADD_ULONG ( \
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&(_Device)->dev_RefTypes[_Type], \
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(ULONG)-1, \
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&SpxGlobalInterlock); \
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SpxDerefDevice (_Device); \
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}
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#else
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#define SpxReferenceDevice(_Device, _Type) \
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{ \
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(VOID)InterlockedIncrement ( \
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&(_Device)->dev_RefCount); \
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}
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#define SpxDereferenceDevice(_Device, _Type) \
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SpxDerefDevice (_Device)
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#endif
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// EXPORTED ROUTINES
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VOID
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SpxDestroyDevice(
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IN PDEVICE Device);
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VOID
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SpxDerefDevice(
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IN PDEVICE Device);
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NTSTATUS
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SpxInitCreateDevice(
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IN PDRIVER_OBJECT DriverObject,
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IN PUNICODE_STRING DeviceName);
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