IOCTL_SRIOV_INVALIDATE_BLOCK - NtDoc

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

// CTL_CODE(0x0022, 0x815, METHOD_BUFFERED, FILE_READ_ACCESS)
#define IOCTL_SRIOV_INVALIDATE_BLOCK 0x00226054
View the official Windows Driver Kit DDI reference

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Windows Driver Kit DDI reference (ni-pcivirt-ioctl_sriov_invalidate_block)

IOCTL_SRIOV_INVALIDATE_BLOCK IOCTL

Major Code:

IRP_MJ_DEVICE_CONTROL

Description

The IOCTL_SRIOV_INVALIDATE_BLOCK request indicates that the virtualization stack wants to reset the contents of the specified configuration block.

Parameters

Major code

Input buffer

A pointer to a SRIOV_INVALIDATE_BLOCK structure that contains the configuration block to invalidate.

Input buffer length

The size of the SRIOV_INVALIDATE_BLOCK structure.

Output buffer

Output buffer length

Input/output buffer

Input/output buffer length

Status block

Irp->IoStatus.Status is set to STATUS_SUCCESS if the request is successful. Otherwise, Status to the appropriate error condition as a NTSTATUS code.

Remarks

This IOCTL request is sent by the virtualization stack to the PCI Express SR-IOV Physical Function (PF) driver that exposes GUID_DEVINTERFACE_VIRTUALIZABLE_DEVICE.

The request is sent to the physical function (PF) driver by VSP. The PF driver completes the request when the driver wants to indicate to the virtual function (VF) driver that one or more of the configuration blocks need to be read again.

View the official Windows Driver Kit DDI reference

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