WDC_PciSriovGetNumVFs()

DWORD DLLCALLCONV WDC_PciSriovGetNumVFs	(	_In_ WDC_DEVICE_HANDLE	hDev,
		_Outptr_ DWORD *	pdwNumVFs
	)

Gets the number of virtual functions assigned to a supported device.

Parameters

[in]	hDev	Handle to a PlugandPlay WDC device, returned by WDC_PciDeviceOpen()
[out]	pdwNumVFs	A pointer to a DWORD to store the number of VFs assigned

Returns

Returns WD_STATUS_SUCCESS (0) on success, or an appropriate error code otherwise

 
void SriovExample(WDC_DEVICE_HANDLE hDev)
{
    DWORD dwStatus, dwNumVFs = 3;
 
    dwStatus = WDC_PciSriovEnable(hDev, dwNumVFs);
    if (dwStatus)
    {
        printf("Error! Could not enable SRIOV\n");
        return;
    }
 
    dwNumVFs = 0;
    dwStatus = WDC_PciSriovGetNumVFs(hDev, &dwNumVFs);
    if (dwStatus)
    {
        printf("Error! Could not get number of virtual functions\n");
        goto Error;
    }
 
    // Should be 3
    printf("Number of virtual functions: %ld\n", dwNumVFs);
 
    /*
        More code...
    */
 
Error:
    dwStatus = WDC_PciSriovDisable(hDev);
    if (dwStatus)
    {
        printf("Error! Could not disable SRIOV\n");
    }
}