NdisAdvanceNetBufferListDataStart - NtDoc
Native API online documentation, based on the System Informer
(formerly Process Hacker) phnt
headers
// nblapi.h
NDIS_EXPORTED_ROUTINE VOID NdisAdvanceNetBufferListDataStart(
[in] NET_BUFFER_LIST *NetBufferList,
[in] ULONG DataOffsetDelta,
[in] BOOLEAN FreeMdl,
NET_BUFFER_FREE_MDL *FreeMdlMdlHandler
);
View the official Windows Driver Kit DDI referenceNo description available.
Call the NdisAdvanceNetBufferListDataStart function to release data space that was claimed in previous calls to the NdisRetreatNetBufferListDataStart function.
NetBufferList [in]A pointer to a previously allocated NET_BUFFER_LIST structure.
DataOffsetDelta [in]The amount of used data space to release.
FreeMdl [in]If TRUE and NDIS allocated memory to satisfy the corresponding NdisRetreatNetBufferListDataStart call, this function frees the memory that was allocated and the associated MDL.
FreeMdlMdlHandlerAn optional entry point for an NetFreeMdl function. If the caller specifies an entry point for the NetFreeMdl function, NDIS calls NetFreeMdl to free an MDL and memory.
NdisAdvanceNetBufferListDataStart releases used data space for all the NET_BUFFER structures in a NET_BUFFER_LIST structure. If FreeMdl is TRUE and NdisRetreatNetBufferListDataStart allocated memory to satisfy the corresponding allocation request, NdisAdvanceNetBufferListDataStart frees the allocated memory. Calling this function is equivalent to calling NdisAdvanceNetBufferDataStart for every NET_BUFFER structure on the NET_BUFFER_LIST structure. However, calling NdisAdvanceNetBufferListDataStart is more efficient.
When protocol drivers call NdisAdvanceNetBufferListDataStart on the receive path to access the various transport headers, the MDL chain should not be modified and FreeMdl is FALSE.
NdisRetreatNetBufferListDataStart