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MmGetMdlByteOffset macro (wdm.h)

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The MmGetMdlByteOffset macro returns the byte offset within the initial page of the buffer described by the given MDL.

Syntax

void MmGetMdlByteOffset(
  [in]  Mdl
);

Parameters

[in] Mdl

Pointer to an MDL.

Return value

None

Remarks

MmGetMdlByteOffset returns the offset in bytes.

Callers of MmGetMdlByteOffset can be running at any IRQL. Usually, callers are running at IRQL <= DISPATCH_LEVEL.

Requirements

Requirement Value
Minimum supported client Windows 2000
Header wdm.h
IRQL Any level (see Remarks)
DDI compliance rules MdlAfterReqCompletedIntIoctlA(kmdf), MdlAfterReqCompletedIoctlA(kmdf), MdlAfterReqCompletedReadA(kmdf), MdlAfterReqCompletedWriteA(kmdf)