StorPortMaskMsixInterrupt function (storport.h)

Article
02/22/2024

StorPortMaskMsixInterrupt masks or unmasks an interrupt in the MSI-X hardware interrupt table.

Syntax

ULONG StorPortMaskMsixInterrupt(
  [in] PVOID   HwDeviceExtension,
  [in] ULONG   MessageId,
  [in] BOOLEAN Mask
);

Parameters

[in] HwDeviceExtension

A pointer to the miniport's device extension.

[in] MessageId

The index of the table entry in the MSI-X hardware interrupt table.

[in] Mask

Indicates whether to mask (TRUE) or unmask (FALSE) the interrupt.

Return value

This function returns one of the following status codes.

Return code	Description
STOR_STATUS_SUCCESS	The specified MSI-X interrupt was successfully enabled/disabled.
STOR_STATUS_INVALID_PARAMETER	A parameter is invalid; for example, MessageId is not a valid table index value.
STOR_STATUS_UNSUCCESSFUL	Returned for other internal system reasons.

Remarks

A miniport can call StorPortMaskMsixInterrupt to mask or unmask the specified interrupt in the MSI-X hardware interrupt table. If a table entry is masked, the device does not generate interrupts that correspond to that table entry.

Requirements

Requirement	Value
Minimum supported server	Windows Server 2022
Header	storport.h

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