NDIS_STATUS
otLwfTunInitialize(
_In_ PMS_FILTER pFilter
)
{
NDIS_STATUS Status = NDIS_STATUS_SUCCESS;
HANDLE threadHandle = NULL;
LogFuncEntry(DRIVER_DEFAULT);
NT_ASSERT(pFilter->DeviceCapabilities & OTLWF_DEVICE_CAP_THREAD_1_0);
KeInitializeEvent(
&pFilter->TunWorkerThreadStopEvent,
SynchronizationEvent, // auto-clearing event
FALSE // event initially non-signalled
);
KeInitializeEvent(
&pFilter->TunWorkerThreadAddressChangedEvent,
SynchronizationEvent, // auto-clearing event
FALSE // event initially non-signalled
);
// Start the worker thread
Status = PsCreateSystemThread(
&threadHandle, // ThreadHandle
THREAD_ALL_ACCESS, // DesiredAccess
NULL, // ObjectAttributes
NULL, // ProcessHandle
NULL, // ClientId
otLwfTunWorkerThread, // StartRoutine
pFilter // StartContext
);
if (!NT_SUCCESS(Status))
{
LogError(DRIVER_DEFAULT, "PsCreateSystemThread failed, %!STATUS!", Status);
goto error;
}
// Grab the object reference to the worker thread
Status = ObReferenceObjectByHandle(
threadHandle,
THREAD_ALL_ACCESS,
*PsThreadType,
KernelMode,
&pFilter->TunWorkerThread,
NULL
);
if (!NT_VERIFYMSG("ObReferenceObjectByHandle can't fail with a valid kernel handle", NT_SUCCESS(Status)))
{
LogError(DRIVER_DEFAULT, "ObReferenceObjectByHandle failed, %!STATUS!", Status);
KeSetEvent(&pFilter->TunWorkerThreadStopEvent, IO_NO_INCREMENT, FALSE);
}
// Make sure to enable RLOC passthrough
Status =
otLwfCmdSetProp(
pFilter,
SPINEL_PROP_THREAD_RLOC16_DEBUG_PASSTHRU,
SPINEL_DATATYPE_BOOL_S,
TRUE
);
if (!NT_SUCCESS(Status))
{
LogError(DRIVER_DEFAULT, "Enabling RLOC pass through failed, %!STATUS!", Status);
goto error;
}
// TODO - Query other values and capabilities
error:
if (!NT_SUCCESS(Status))
{
otLwfTunUninitialize(pFilter);
}
LogFuncExitNDIS(DRIVER_DEFAULT, Status);
return Status;
}
NTSTATUS
otLwfEventProcessingStart(
_In_ PMS_FILTER pFilter
)
{
NTSTATUS status = STATUS_SUCCESS;
HANDLE threadHandle = NULL;
LogFuncEntryMsg(DRIVER_DEFAULT, "Filter: %p, TimeIncrement = %u", pFilter, KeQueryTimeIncrement());
pFilter->NextAlarmTickCount.QuadPart = 0;
NT_ASSERT(pFilter->EventWorkerThread == NULL);
if (pFilter->EventWorkerThread != NULL)
{
status = STATUS_ALREADY_REGISTERED;
goto error;
}
// Make sure to reset the necessary events
KeResetEvent(&pFilter->EventWorkerThreadStopEvent);
KeResetEvent(&pFilter->SendNetBufferListComplete);
KeResetEvent(&pFilter->EventWorkerThreadEnergyScanComplete);
// Start the worker thread
status = PsCreateSystemThread(
&threadHandle, // ThreadHandle
THREAD_ALL_ACCESS, // DesiredAccess
NULL, // ObjectAttributes
NULL, // ProcessHandle
NULL, // ClientId
otLwfEventWorkerThread, // StartRoutine
pFilter // StartContext
);
if (!NT_SUCCESS(status))
{
LogError(DRIVER_DEFAULT, "PsCreateSystemThread failed, %!STATUS!", status);
goto error;
}
// Grab the object reference to the worker thread
status = ObReferenceObjectByHandle(
threadHandle,
THREAD_ALL_ACCESS,
*PsThreadType,
KernelMode,
&pFilter->EventWorkerThread,
NULL
);
if (!NT_VERIFYMSG("ObReferenceObjectByHandle can't fail with a valid kernel handle", NT_SUCCESS(status)))
{
LogError(DRIVER_DEFAULT, "ObReferenceObjectByHandle failed, %!STATUS!", status);
KeSetEvent(&pFilter->EventWorkerThreadStopEvent, IO_NO_INCREMENT, FALSE);
}
ZwClose(threadHandle);
error:
if (!NT_SUCCESS(status))
{
ExSetTimerResolution(0, FALSE);
}
LogFuncExitNT(DRIVER_DEFAULT, status);
return status;
}
