code: def strip_ssc(payload):
          
          ssc = struct.unpack('H', payload)[0]
          ssc_seq = ssc >> 4
          ssc_frag = ssc & 0x000f
          return ssc_seq, ssc_frag
docs: strip(2 byte) wlan_mgt.fixed.ssc
          :payload: ctypes.structure
          :return: int
              ssc_seq (starting sequence control sequence)
          :return: int
              ssc_frag (starting sequence control fragment number)