This function is called by an NIC driver to indicate a received packet to all filter library database bindings associated with an Ethernet address.

VOID EthFilterIndicateReceive(
IN PETH_FILTER
Filter
,
IN NDIS_HANDLE
MacReceiveContext
,
IN PCHAR
Address
,
IN PVOID
HeaderBuffer
,
IN UINT
HeaderBufferSize
,
IN PVOID
LookaheadBuffer
,
IN UINT
LookaheadBufferSize
,
IN UINT
PacketSize
);

Parameters

Filter

Pointer to a previously created and initialized filter library database.

MacReceiveContext

Specifies a context that the NIC driver associates with a packet received from the network.

Address

Pointer to the destination address that the NIC driver has already extracted from the received packet.

HeaderBuffer

Pointer to the virtual address of the virtually contiguous buffer containing the packet header. The buffer is valid only within the current call to this function.

HeaderBufferSize

Indicates the length, in bytes, of the packet header.

LookaheadBuffer

Pointer to the virtual address of the virtually contiguous buffer containing the first bytes of packet data. The packet buffer is valid only for the current call to this function.

LookaheadBufferSize

Specifies the size, in bytes, of the look-ahead buffer.

PacketSize

Specifies the size, in bytes, of the received packet data. This parameter number is not related to the look-ahead buffer, but rather indicates the size of the received packet data. This allows a protocol driver to call the NdisTransferDatafunction and to transfer data in the packet, as necessary. The data length does not include the packet header length.

Remarks

Instead of calling NdisIndicateReceivewithout filtering, the NIC driver calls this function to filter a received packet so that only the appropriate bindings receive it. This function then calls the ProtocolReceivefunction of each protocol driver to which the binding filter applies.

In its calls to ProtocolReceive, this function passes each protocol driver a pointer to the packet header as well as a pointer to some or all of the packet data. The protocol driver can inspect the header and data in the packet, optionally copy as much of the header or data as is visible, or optionally call NdisTransferDatato instruct the NIC driver to copy the data into a protocol-supplied packet.

A driver that calls this function runs at IRQL <= DISPATCH_LEVEL.

Requirements

Runs on	Versions	Defined in	Include	Link to
Windows CE OS	2.0 and later	Ndis.h

Note   This API is part of the complete Windows CE OS package as provided by Microsoft. The functionality of a particular platform is determined by the original equipment manufacturer (OEM) and some devices may not support this API.

See Also

EthFilterIndicateReceiveComplete, NdisMEthIndicateReceive, NdisTransferData

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 Last updated on Tuesday, July 13, 2004

© 2004 Microsoft Corporation. All rights reserved.