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//
// NtDeviceIoControlFile IoControlCode values for this device.
...
#define IOCTL_NDIS_ADD_TDI_DEVICE       _NDIS_CONTROL_CODE(5, METHOD_B
+UFFERED)
#define IOCTL_NDIS_GET_LOG_DATA         _NDIS_CONTROL_CODE(7, METHOD_O
+UT_DIRECT)
#define IOCTL_NDIS_GET_VERSION          _NDIS_CONTROL_CODE(8, METHOD_O
+UT_DIRECT)

#define CTL_CODE(devType, func, meth, acc) (((devType) << 16) | ((acc)
+ << 14) | ((func) << 2) | (meth))