code: func (t tPacketHdr) tpStatus() uint32 {
  	hdr := unsafe.Pointer(&t[0])
  	statusPtr := unsafe.Pointer(uintptr(hdr) + uintptr(tpStatusOffset))
  	return atomic.LoadUint32((*uint32)(statusPtr))
  }
docs: // tpStatus returns the frame status field.
  // The status is concurrently updated by the kernel as a result we must
  // use atomic operations to prevent races.