WinPcap: _OPEN_INSTANCE Struct Reference

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2023-12-01

Contains the state of a running instance of the NPF driver.
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#include <Packet.h>


Data Fields
PDEVICE_EXTENSION	DeviceExtension
NDIS_HANDLE	AdapterHandle
	NDIS idetifier of the adapter used by this instance.
UINT	Medium
NDIS_HANDLE	PacketPool
	Pool of NDIS_PACKET structures used to transfer the packets from and to the NIC driver.
KSPIN_LOCK	RequestSpinLock
	SpinLock used to synchronize the OID requests.
LIST_ENTRY	RequestList
	List of pending OID requests.
LIST_ENTRY	ResetIrpList
	List of pending adapter reset requests.
INTERNAL_REQUEST	Requests [MAX_REQUESTS]
	Array of structures that wrap every single OID request.
PMDL	BufferMdl
	Pointer to a Memory descriptor list (MDL) that maps the circular buffer's memory.
PKEVENT	ReadEvent
	Pointer to the event on which the read calls on this instance must wait.
PUCHAR	bpfprogram
UINT	MinToCopy
LARGE_INTEGER	TimeOut
int	mode
	Working mode of the driver. See PacketSetMode() for details.
LARGE_INTEGER	Nbytes
	Amount of bytes accepted by the filter when this instance is in statistical mode.
LARGE_INTEGER	Npackets
	Number of packets accepted by the filter when this instance is in statistical mode.
NDIS_SPIN_LOCK	CountersLock
	SpinLock that protects the statistical mode counters.
UINT	Nwrites
ULONG	Multiple_Write_Counter
	Counts the number of times a single write has already physically repeated.
NDIS_EVENT	WriteEvent
	Event used to synchronize the multiple write process.
BOOLEAN	WriteInProgress
NDIS_SPIN_LOCK	WriteLock
	SpinLock that protects the WriteInProgress variable.
NDIS_EVENT	NdisRequestEvent
	Event used to synchronize I/O requests with the callback structure of NDIS.
BOOLEAN	SkipSentPackets
	True if this instance should not capture back the packets that it transmits.
NDIS_STATUS	IOStatus
	Maintains the status of and OID request call, that will be passed to the application.
HANDLE	DumpFileHandle
	Handle of the file used in dump mode.
PFILE_OBJECT	DumpFileObject
	Pointer to the object of the file used in dump mode.
PKTHREAD	DumpThreadObject
	Pointer to the object of the thread used in dump mode.
HANDLE	DumpThreadHandle
	Handle of the thread created by dump mode to asynchronously move the buffer to disk.
NDIS_EVENT	DumpEvent
	Event used to synchronize the dump thread with the tap when the instance is in dump mode.
LARGE_INTEGER	DumpOffset
	Current offset in the dump file.
UNICODE_STRING	DumpFileName
	String containing the name of the dump file.
UINT	MaxDumpBytes
UINT	MaxDumpPacks
BOOLEAN	DumpLimitReached
MEM_TYPE	mem_ex
	Memory used by the TME virtual co-processor.
TME_CORE	tme
	Data structure containing the virtualization of the TME co-processor.
NDIS_SPIN_LOCK	MachineLock
	SpinLock that protects the BPF filter and the TME engine, if in use.
UINT	MaxFrameSize
CpuPrivateData	CpuData [32]
	Pool of kernel buffer structures, one for each CPU.
ULONG	ReaderSN
	Sequence number of the next packet to be read from the pool of kernel buffers.
ULONG	WriterSN
ULONG	Size
	Size of each kernel buffer contained in the CpuData field.
ULONG	AdapterHandleUsageCounter
NDIS_SPIN_LOCK	AdapterHandleLock
ULONG	AdapterBindingStatus
	Specifies if NPF is still bound to the adapter used by this instance, it's unbinding or it's not bound.
NDIS_EVENT	NdisOpenCloseCompleteEvent
NDIS_EVENT	NdisWriteCompleteEvent
	Event that is signalled when all the packets have been successfully sent by NdisSend (and corresponfing sendComplete has been called).
NTSTATUS	OpenCloseStatus
ULONG	TransmitPendingPackets
	Specifies the number of packets that are pending to be transmitted, i.e. have been submitted to NdisSendXXX but the SendComplete has not been called yet.

WinPcap: _OPEN_INSTANCE Struct Reference

Data Fields