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Merge pull request #8291 from volta-networks/isis_timer_unstable

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isisd: avoid lsp_sched loop when unstable
This commit is contained in:
Donald Sharp 2021-03-20 19:52:01 -04:00 committed by GitHub
commit cd28e264a3
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1 changed files with 15 additions and 5 deletions
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14
isisd/isis_lsp.c
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@ -1561,15 +1561,25 @@ int _lsp_regenerate_schedule(struct isis_area *area, int level,
/*
* Schedule LSP refresh ASAP
*/
timeout = 0;
if (area->bfd_signalled_down) {
sched_debug(
"ISIS (%s): Scheduling immediately due to BDF 'down' message.",
area->area_tag);
area->bfd_signalled_down = false;
area->bfd_force_spf_refresh = true;
timeout = 0;
} else {
int64_t time_since_last = monotime_since(
&area->last_lsp_refresh_event[lvl - 1],
NULL);
timeout = time_since_last < 100000L
? (100000L - time_since_last)/1000
: 0;
if (timeout > 0)
sched_debug(
"ISIS (%s): Last generation was more than lsp_gen_interval ago. Scheduling for execution in %ld ms due to the instability timer.",
area->area_tag, timeout);
else
sched_debug(
"ISIS (%s): Last generation was more than lsp_gen_interval ago. Scheduling for execution now.",
area->area_tag);