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authorFlorin Coras <fcoras@cisco.com>2017-04-03 18:00:00 -0700
committerFlorin Coras <fcoras@cisco.com>2017-04-15 12:15:35 -0700
commit5921f98635cbaa065b583d7520e0582f68218e70 (patch)
treea723a052294c7eaf329184bb45e93baf4c4099a3 /src/vnet/tcp/tcp.h
parent6cf260cb2a8b41450850a1578c708e1dd5af699f (diff)
Set lower bound on persist timer
Change-Id: Ie98ecb8944e4d27e943797948fad41ec074d6720 Signed-off-by: Florin Coras <fcoras@cisco.com>
Diffstat (limited to 'src/vnet/tcp/tcp.h')
-rw-r--r--src/vnet/tcp/tcp.h7
1 files changed, 5 insertions, 2 deletions
diff --git a/src/vnet/tcp/tcp.h b/src/vnet/tcp/tcp.h
index 93f3245de5c..225b26da0c2 100644
--- a/src/vnet/tcp/tcp.h
+++ b/src/vnet/tcp/tcp.h
@@ -94,6 +94,7 @@ extern timer_expiration_handler tcp_timer_retransmit_syn_handler;
#define TCP_2MSL_TIME 300 /* 30s */
#define TCP_CLOSEWAIT_TIME 1 /* 0.1s */
#define TCP_CLEANUP_TIME 5 /* 0.5s Time to wait before cleanup */
+#define TCP_TIMER_PERSIST_MIN 2 /* 0.2s */
#define TCP_RTO_MAX 60 * THZ /* Min max RTO (60s) as per RFC6298 */
#define TCP_RTT_MAX 30 * THZ /* 30s (probably too much) */
@@ -561,14 +562,16 @@ tcp_persist_timer_set (tcp_connection_t * tc)
{
/* Reuse RTO. It's backed off in handler */
tcp_timer_set (tc, TCP_TIMER_PERSIST,
- clib_max (tc->rto * TCP_TO_TIMER_TICK, 1));
+ clib_max (tc->rto * TCP_TO_TIMER_TICK,
+ TCP_TIMER_PERSIST_MIN));
}
always_inline void
tcp_persist_timer_update (tcp_connection_t * tc)
{
tcp_timer_update (tc, TCP_TIMER_PERSIST,
- clib_max (tc->rto * TCP_TO_TIMER_TICK, 1));
+ clib_max (tc->rto * TCP_TO_TIMER_TICK,
+ TCP_TIMER_PERSIST_MIN));
}
always_inline void