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tcp: update persist timer if data acked

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Update persist timer if data sent during snd_wnd < snd_mss was acked.

Type: fix

Signed-off-by: Florin Coras <fcoras@cisco.com>
Change-Id: I5c75ff8ddc0e49750b2088237d32afa4eda99e7f
This commit is contained in:
Florin Coras 2022-03-14 14:23:39 -07:00 committed by Damjan Marion
parent 3a36682017
commit c6a2f1f76f
1 changed files with 7 additions and 3 deletions
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10
src/vnet/tcp/tcp_input.c
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@ -629,11 +629,15 @@ tcp_update_snd_wnd (tcp_connection_t * tc, u32 seq, u32 ack, u32 snd_wnd)
if (PREDICT_FALSE (tc->snd_wnd < tc->snd_mss))
{
/* Set persist timer if not set and we just got 0 wnd */
if (!tcp_timer_is_active (tc, TCP_TIMER_PERSIST)
&& !tcp_timer_is_active (tc, TCP_TIMER_RETRANSMIT))
if (!tcp_timer_is_active (tc, TCP_TIMER_RETRANSMIT))
{
tcp_worker_ctx_t *wrk = tcp_get_worker (tc->c_thread_index);
/* Set persist timer if we just got 0 wnd. If already set,
* update it because some data sent with snd_wnd < snd_mss was
* acked. */
if (tcp_timer_is_active (tc, TCP_TIMER_PERSIST))
tcp_persist_timer_reset (&wrk->timer_wheel, tc);
tcp_persist_timer_set (&wrk->timer_wheel, tc);
}
}