Function sctp_shutdown_timer

freebsd/netinet/sctp_timer.c:1300–1321

* For the shutdown and shutdown-ack, we do not keep one around on the * control queue. This means we must generate a new one and call the general * chunk output routine, AFTER having done threshold management. * It is assumed that net is non-NULL. */

 * It is assumed that net is non-NULL.
 */
int
sctp_shutdown_timer(struct sctp_inpcb *inp, struct sctp_tcb *stcb,
    struct sctp_nets *net)
{
	struct sctp_nets *alt;

	/* first threshold management */
	if (sctp_threshold_management(inp, stcb, net, stcb->asoc.max_send_times)) {
		/* Assoc is over */
		return (1);
	}
	sctp_backoff_on_timeout(stcb, net, 1, 0, 0);
	/* second select an alternative */
	alt = sctp_find_alternate_net(stcb, net, 0);

	/* third generate a shutdown into the queue for out net */
	sctp_send_shutdown(stcb, alt);

	/* fourth restart timer */
	sctp_timer_start(SCTP_TIMER_TYPE_SHUTDOWN, inp, stcb, alt);
	return (0);
}

int
sctp_shutdownack_timer(struct sctp_inpcb *inp, struct sctp_tcb *stcb,