TCPS_CLOSED
s->dst.state = TCPS_CLOSED;
TCPS_CLOSED;
(*state)->src.state = (*state)->dst.state = TCPS_CLOSED;
if (tp->t_state == TCPS_CLOSED)
tp->t_state = TCPS_CLOSED;
tp->t_state = TCPS_CLOSED;
case TCPS_CLOSED:
tp->t_state = TCPS_CLOSED;
tp->t_state = TCPS_CLOSED;