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NdisUnchainBufferAtFront function

Note   NDIS 5. x has been deprecated and is superseded by NDIS 6. x. For new NDIS driver development, see Network Drivers Starting with Windows Vista. For information about porting NDIS 5. x drivers to NDIS 6. x, see Porting NDIS 5.x Drivers to NDIS 6.0.

NdisUnchainBufferAtFront removes the buffer descriptor at the head of the chain of buffer descriptors for a given packet.

Syntax


VOID NdisUnchainBufferAtFront(
  _Inout_ PNDIS_PACKET Packet,
  _Out_   PNDIS_BUFFER *Buffer
);

Parameters

Packet [in, out]

Pointer to the packet descriptor.

Buffer [out]

Pointer to a caller-supplied variable in which this function returns a pointer to the removed buffer descriptor. If no buffer is chained to the given packet, this variable is set to NULL.

Return value

None

Remarks

NdisUnchainBufferAtFront returns a pointer to the buffer descriptor it removed from the buffer descriptor chain of the given packet.

It also resets the valid counts for the packet to FALSE, thereby forcing NdisQueryPacket to recalculate information about the given packet if it is called subsequently with that packet.

Requirements

Target platform

Universal

Version

Not supported for NDIS 6.0 drivers in Windows Vista. Supported for NDIS 5.1 drivers in Windows Vista and Windows XP.

Header

Ndis.h (include Ndis.h)

Library

Ndis.lib

IRQL

Any level

See also

NdisChainBufferAtFront
NdisQueryPacket
NdisUnchainBufferAtBack

 

 

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