static void
nsm_notice_state_change (struct ospf_neighbor *nbr, int next_state, int event)
{
/* Logging change of status. */
if (IS_DEBUG_OSPF (nsm, NSM_STATUS))
zlog_debug ("NSM[%s:%s]: State change %s -> %s (%s)",
IF_NAME (nbr->oi), inet_ntoa (nbr->router_id),
LOOKUP (ospf_nsm_state_msg, nbr->state),
LOOKUP (ospf_nsm_state_msg, next_state),
ospf_nsm_event_str [event]);
/* Optionally notify about adjacency changes */
if (CHECK_FLAG(nbr->oi->ospf->config, OSPF_LOG_ADJACENCY_CHANGES) &&
(CHECK_FLAG(nbr->oi->ospf->config, OSPF_LOG_ADJACENCY_DETAIL) ||
(next_state == NSM_Full) || (next_state < nbr->state)))
zlog_notice("AdjChg: Nbr %s on %s: %s -> %s (%s)",
inet_ntoa (nbr->router_id), IF_NAME (nbr->oi),
LOOKUP (ospf_nsm_state_msg, nbr->state),
LOOKUP (ospf_nsm_state_msg, next_state),
ospf_nsm_event_str [event]);
/* Advance in NSM */
if (next_state > nbr->state)
nbr->ts_last_progress = recent_relative_time ();
else /* regression in NSM */
{
nbr->ts_last_regress = recent_relative_time ();
nbr->last_regress_str = ospf_nsm_event_str [event];
}
#ifdef HAVE_SNMP
/* Terminal state or regression */
if ((next_state == NSM_Full)
|| (next_state == NSM_TwoWay)
|| (next_state < nbr->state))
{
/* ospfVirtNbrStateChange */
if (nbr->oi->type == OSPF_IFTYPE_VIRTUALLINK)
ospfTrapVirtNbrStateChange(nbr);
/* ospfNbrStateChange trap */
else
/* To/From FULL, only managed by DR */
if (((next_state != NSM_Full) && (nbr->state != NSM_Full))
|| (nbr->oi->state == ISM_DR))
ospfTrapNbrStateChange(nbr);
}
#endif
}
/* Add schedule for SPF calculation. To avoid frequenst SPF calc, we
set timer for SPF calc. */
void
ospf6_spf_schedule (struct ospf6 *ospf6, unsigned int reason)
{
unsigned long delay, elapsed, ht;
struct timeval now, result;
ospf6_set_spf_reason(ospf6, reason);
if (IS_OSPF6_DEBUG_SPF(PROCESS) || IS_OSPF6_DEBUG_SPF (TIME))
{
char rbuf[32];
ospf6_spf_reason_string(reason, rbuf, sizeof(rbuf));
zlog_debug ("SPF: calculation timer scheduled (reason %s)", rbuf);
}
/* OSPF instance does not exist. */
if (ospf6 == NULL)
return;
/* SPF calculation timer is already scheduled. */
if (ospf6->t_spf_calc)
{
if (IS_OSPF6_DEBUG_SPF(PROCESS) || IS_OSPF6_DEBUG_SPF (TIME))
zlog_debug ("SPF: calculation timer is already scheduled: %p",
(void *)ospf6->t_spf_calc);
return;
}
/* XXX Monotic timers: we only care about relative time here. */
now = recent_relative_time ();
timersub (&now, &ospf6->ts_spf, &result);
elapsed = (result.tv_sec * 1000) + (result.tv_usec / 1000);
ht = ospf6->spf_holdtime * ospf6->spf_hold_multiplier;
if (ht > ospf6->spf_max_holdtime)
ht = ospf6->spf_max_holdtime;
/* Get SPF calculation delay time. */
if (elapsed < ht)
{
/* Got an event within the hold time of last SPF. We need to
* increase the hold_multiplier, if it's not already at/past
* maximum value, and wasn't already increased..
*/
if (ht < ospf6->spf_max_holdtime)
ospf6->spf_hold_multiplier++;
/* always honour the SPF initial delay */
if ( (ht - elapsed) < ospf6->spf_delay)
delay = ospf6->spf_delay;
else
delay = ht - elapsed;
}
else
{
/* Event is past required hold-time of last SPF */
delay = ospf6->spf_delay;
ospf6->spf_hold_multiplier = 1;
}
if (IS_OSPF6_DEBUG_SPF(PROCESS) || IS_OSPF6_DEBUG_SPF (TIME))
zlog_debug ("SPF: calculation timer delay = %ld", delay);
zlog_info ("SPF: Scheduled in %ld msec", delay);
ospf6->t_spf_calc =
thread_add_timer_msec (master, ospf6_spf_calculation_thread, ospf6, delay);
}
