NdisFreePacket 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 x has been deprecated and is superseded by NDIS 6.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.
NdisFreePacket releases a packet that was allocated from packet pool with NdisAllocatePacket and returns it to the free list.
Syntax
VOID NdisFreePacket(
_In_ PNDIS_PACKET Packet
);
Parameters
- Packet [in]
Pointer to the packet descriptor returned by NdisAllocatePacket or NdisDprAllocatePacket.
Return value
None
Remarks
Before calling NdisFreePacket, the driver either must call NdisFreeBuffer as many times as necessary to release all buffer descriptors chained to the packet, or it must call an NdisUnchainBufferAtXxx function as many times as necessary to save all pointers to buffer descriptors. Otherwise, memory associated with buffer descriptors in the chain remains unusable by the driver and by NDIS until the system is rebooted.
The driver must release any spin lock it is holding before calling NdisFreePacket.
Requirements
Target platform |
Universal |
Version |
Not supported for NDIS 6.0 drivers in Windows Vista. Use NdisFreeNetBuffer instead. Supported for NDIS 5.1 drivers in Windows Vista and Windows XP. |
Header |
Ndis.h (include Ndis.h) |
Library |
Ndis.lib |
IRQL |
<= DISPATCH_LEVEL |
See also