tcp: update persist timer if data acked
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
diff --git a/src/vnet/tcp/tcp_input.c b/src/vnet/tcp/tcp_input.c
index 64b9334..c15c328 100644
--- a/src/vnet/tcp/tcp_input.c
+++ b/src/vnet/tcp/tcp_input.c
@@ -629,11 +629,15 @@
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);
}
}