NET_BUFFER_DATA_OFFSET macro (ndis/nblaccessors.h)
NET_BUFFER_DATA_OFFSET is a macro that NDIS drivers use to get the current offset from the beginning of the data space to the start of the used data space in a NET_BUFFER structure.
Syntax
#define NET_BUFFER_DATA_OFFSET(_NB) ((_NB)->DataOffset)
Parameters
_NB
A pointer to a NET_BUFFER structure.
Return value
NET_BUFFER_DATA_OFFSET returns the offset, in bytes, from the beginning of the data space to the start of the used data space of the indicated NET_BUFFER structure. This value also represents the size of the unused data space (available backfill).
Remarks
NET_BUFFER_DATA_OFFSET gets the return value from the DataOffset member of the NET_BUFFER structure.
Requirements
| Requirement | Value |
|---|---|
| Minimum supported client | Supported in NDIS 6.0 and later. |
| Target Platform | Universal |
| Header | ndis/nblaccessors.h (include ndis.h) |