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https://gitlab.nic.cz/labs/bird.git
synced 2025-03-11 17:08:46 +00:00
Fixed export hook stopping in some corner cases.
Notably, it's in a corked state and also when refeed is pending.
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6abef2b20b
commit
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@ -739,7 +739,9 @@ channel_do_pause(struct channel *c)
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}
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/* Stop export */
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if (c->out_req.hook)
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if (c->refeed_pending)
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c->refeed_pending = 0;
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else if (c->out_req.hook)
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rt_stop_export(&c->out_req, channel_export_stopped);
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channel_roa_unsubscribe_all(c);
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@ -863,6 +865,9 @@ channel_request_feeding(struct channel *c)
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{
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ASSERT(c->out_req.hook);
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if (c->refeed_pending)
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return;
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c->refeed_pending = 1;
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rt_stop_export(&c->out_req, channel_export_stopped);
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}
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@ -2073,8 +2073,11 @@ rt_table_export_uncork(void *_hook)
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{
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case TES_HUNGRY:
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RT_LOCKED(RT_PUB(SKIP_BACK(struct rtable_private, exporter, hook->table)), tab)
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rt_table_export_start_feed(tab, hook);
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break;
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if ((state = atomic_load_explicit(&hook->h.export_state, memory_order_relaxed)) == TES_HUNGRY)
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rt_table_export_start_feed(tab, hook);
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if (state != TES_STOP)
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break;
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/* fall through */
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case TES_STOP:
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rt_stop_export_common(&hook->h);
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break;
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@ -2181,19 +2184,19 @@ rt_alloc_export(struct rt_exporter *re, uint size)
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hook->pool = p;
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hook->table = re;
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hook->n = (node) {};
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add_tail(&re->hooks, &hook->n);
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return hook;
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}
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void
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rt_init_export(struct rt_exporter *re, struct rt_export_hook *hook)
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rt_init_export(struct rt_exporter *re UNUSED, struct rt_export_hook *hook)
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{
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hook->event.data = hook;
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bmap_init(&hook->seq_map, hook->pool, 1024);
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hook->n = (node) {};
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add_tail(&re->hooks, &hook->n);
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/* Regular export */
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rt_set_export_state(hook, TES_FEEDING);
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rt_send_export_event(hook);
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@ -2208,6 +2211,7 @@ rt_table_export_stop_locked(struct rt_export_hook *hh)
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switch (atomic_load_explicit(&hh->export_state, memory_order_relaxed))
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{
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case TES_HUNGRY:
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rt_trace(tab, D_EVENTS, "Stopping export hook %s must wait for uncorking; %p", hook->h.req->name, hook->h.n.next);
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return 0;
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case TES_FEEDING:
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switch (hh->req->addr_mode)
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@ -2228,6 +2232,8 @@ rt_table_export_stop_locked(struct rt_export_hook *hh)
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}
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}
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rt_trace(tab, D_EVENTS, "Stopping export hook %s right now", hook->h.req->name);
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return 1;
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}
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@ -4001,7 +4007,7 @@ rt_check_cork_low(struct rtable_private *tab)
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if (!tab->cork_active)
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return;
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if (!tab->exporter.first || (tab->exporter.first->seq + tab->cork_threshold.low > tab->exporter.next_seq))
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if (tab->deleted || !tab->exporter.first || (tab->exporter.first->seq + tab->cork_threshold.low > tab->exporter.next_seq))
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{
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tab->cork_active = 0;
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rt_cork_release();
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@ -4013,7 +4019,7 @@ rt_check_cork_low(struct rtable_private *tab)
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static void
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rt_check_cork_high(struct rtable_private *tab)
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{
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if (!tab->cork_active && tab->exporter.first && (tab->exporter.first->seq + tab->cork_threshold.high <= tab->exporter.next_seq))
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if (!tab->deleted && !tab->cork_active && tab->exporter.first && (tab->exporter.first->seq + tab->cork_threshold.high <= tab->exporter.next_seq))
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{
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tab->cork_active = 1;
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rt_cork_acquire();
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@ -4111,6 +4117,7 @@ rt_commit(struct config *new, struct config *old)
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ev_postpone(&tab->hostcache->update);
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}
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rt_check_cork_low(tab);
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rt_unlock_table(tab);
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RT_UNLOCK(tab);
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