NdisReinitializePacket
This function removes any chained buffers from a given packet and reinitializes it for reuse.
VOID NdisReinitializePacket(
IN OUT PNDIS_PACKET Packet );
Parameters
- Packet
Pointer to the packet descriptor allocated by the caller.
Remarks
This function reinitializes a packet descriptor so that the MiniportReserved and ProtocolReserved arrays contain all 0s and the head of the buffer chain is set to NULL.
A driver can call this function only with packet descriptors allocated by that driver. For example, a MiniportReturnPacket function is likely to call this function to prepare a driver-allocated packet for use in a subsequent receive indication.
Before calling this function, a driver must call the NdisFreeBuffer or the NdisUnchainBufferAtXXX functions as many times as necessary to release or to save all buffer descriptors chained to the packet. Otherwise, a call to this function causes a memory leak: all memory associated with the buffer descriptor chain cannot be used by NDIS or by the driver until the system is rebooted.
A driver can call the NdisQueryPacket function to determine how many buffer descriptors are chained to a given packet and, therefore, how many calls to NdisFreeBuffer or NdisUnchainBufferAtXXX are required. It can call the NdisGetNextBuffer function to retrieve each buffer descriptor pointer to pass to NdisFreeBuffer.
A call to this function has no effect on the NDIS_PACKET_OOB_DATA structure associated with the packet descriptor. To prepare this block for reuse, the allocating driver can reset the relevant members with the appropriate **NDIS_SET_PACKET_**XXX macro(s).
A driver that calls this function can run at any IRQL.
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
NDIS_SET_PACKET_HEADER_SIZE, NDIS_SET_PACKET_MEDIA_SPECIFIC_INFO, NDIS_SET_PACKET_STATUS, NDIS_SET_PACKET_TIME_RECEIVED, NDIS_SET_PACKET_TIME_TO_SEND, NdisAllocatePacket, NdisFreeBuffer, NdisGetNextBuffer, NdisQueryPacket, NdisUnchainBufferAtBack, NdisUnchainBufferAtFront, NdisZeroMemory
Last updated on Tuesday, July 13, 2004
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