From 04b5a939c6a29cdbc733b1113ee8baf400b601bb Mon Sep 17 00:00:00 2001
From: Dimitri Staessens <dimitri@ouroboros.rocks>
Date: Thu, 30 Apr 2020 21:21:36 +0200
Subject: lib: Fix updating retransmission wheel

Fixes infinite rescheduling with RTO getting lower than the timerwheel
resolution. For very low RTO values we'd need a big packet buffer with
the current memory allocator implementation (rdrbuff). Setting a
(configurable) minimum RTO (250 us) reduces this need.

Signed-off-by: Dimitri Staessens <dimitri@ouroboros.rocks>
Signed-off-by: Sander Vrijders <sander@ouroboros.rocks>
---
 src/lib/config.h.in | 2 ++
 1 file changed, 2 insertions(+)

(limited to 'src/lib/config.h.in')

diff --git a/src/lib/config.h.in b/src/lib/config.h.in
index b6e49100..7cac76a6 100644
--- a/src/lib/config.h.in
+++ b/src/lib/config.h.in
@@ -66,3 +66,5 @@
 
 #define DU_BUFF_HEADSPACE   @DU_BUFF_HEADSPACE@
 #define DU_BUFF_TAILSPACE   @DU_BUFF_TAILSPACE@
+
+#define RTO_MIN             @FRCT_RTO_MIN@
-- 
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