import ctypes


def ktime():
    return ctypes.c_int64(0)


def pid():
    return ctypes.c_int32(0)


def deref(ptr):
    "dereference a pointer"
    result = ctypes.cast(ptr, ctypes.POINTER(ctypes.c_void_p)).contents.value
    return result if result is not None else 0


XDP_DROP = ctypes.c_int64(1)
XDP_PASS = ctypes.c_int64(2)
