// storport.h

ULONG StorPortGetHighestNodeNumber(
  [in]  PVOID  HwDeviceExtension,
  [out] PULONG HighestNode
);
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Windows Driver Kit DDI reference (nf-storport-storportgethighestnodenumber)

StorPortGetHighestNodeNumber function

Description

The StorPortGetHighestNodeNumber routine returns the largest possible node number on the system.

Parameters

`HwDeviceExtension` [in]

A pointer to the hardware device extension for the host bus adapter (HBA).

`HighestNode` [out]

A pointer to a variable that holds the highest-numbered node.

Return value

The StorPortGetHighestNodeNumberroutine returns one of the following status codes:

Return code	Description
STOR_STATUS_NOT_IMPLEMENTED	This function is not implemented on the active operating system.
STOR_STATUS_SUCCESS	The operation was successful.
STOR_STATUS_INVALID_PARAMETER	The operation fails with this return value if one or more of the parameters are invalid, for example, if HighestNode is set to NULL.

View the official Windows Driver Kit DDI reference