StorPortGetGroupAffinity - NtDoc

Native API online documentation, based on the System Informer (formerly Process Hacker) phnt headers
// storport.h

ULONG StorPortGetGroupAffinity(
  [in]  PVOID      HwDeviceExtension,
  [in]  USHORT     GroupNumber,
  [out] PKAFFINITY GroupAffinityMask
);
View the official Windows Driver Kit DDI reference

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Windows Driver Kit DDI reference (nf-storport-storportgetgroupaffinity)

StorPortGetGroupAffinity function

Description

The StorPortGetGroupAffinity routine constructs a mask of the active processors in a requested group.

Parameters

HwDeviceExtension [in]

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

GroupNumber [in]

The group from which to return the processor mask.

GroupAffinityMask [out]

A pointer to a variable that holds the affinity mask of the given group.

Return value

The StorPortGetGroupAffinity routine 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 GroupAffinityMask is set to NULL.
STOR_STATUS_UNSUCCESSFUL The operation fails with this return value if one or more of the parameters are invalid, for example, if GroupNumber is set to a value greater than the active group count.