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Hostentry: fix pool locking

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This commit is contained in:
Maria Matejka 2023-05-01 14:20:27 +02:00
parent 7d8e541057
commit ed91d884d3
1 changed files with 15 additions and 21 deletions
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36
nest/rt-table.c
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@ -4592,34 +4592,28 @@ hc_notify_export_one(struct rt_export_request *req, const net_addr *net, struct
{
struct hostcache *hc = SKIP_BACK(struct hostcache, req, req);
/* No interest in this update, mark seen only */
int interested = 1;
RT_LOCKED((rtable *) hc->update.data, tab)
if (ev_active(&hc->update) || !trie_match_net(hc->trie, net))
{
/* No interest in this update, mark seen only */
rpe_mark_seen_all(req->hook, first, NULL, NULL);
interested = 0;
}
else
{
/* This net may affect some hostentries, check the actual change */
rte *o = RTE_VALID_OR_NULL(first->old_best);
struct rte_storage *new_best = first->new_best;
if (!interested)
return;
RPE_WALK(first, rpe, NULL)
{
rpe_mark_seen(req->hook, rpe);
new_best = rpe->new_best;
}
/* This net may affect some hostentries, check the actual change */
rte *o = RTE_VALID_OR_NULL(first->old_best);
struct rte_storage *new_best = first->new_best;
RPE_WALK(first, rpe, NULL)
{
rpe_mark_seen(req->hook, rpe);
new_best = rpe->new_best;
}
/* Yes, something has actually changed. Do the hostcache update. */
if (o != RTE_VALID_OR_NULL(new_best))
RT_LOCKED((rtable *) hc->update.data, tab)
if ((atomic_load_explicit(&req->hook->export_state, memory_order_acquire) == TES_READY)
/* Yes, something has actually changed. Do the hostcache update. */
if ((o != RTE_VALID_OR_NULL(new_best))
&& (atomic_load_explicit(&req->hook->export_state, memory_order_acquire) == TES_READY)
&& !ev_active(&hc->update))
ev_send_loop(tab->loop, &hc->update);
}
}