From f06c203488d8bfd26c227a1f5eae10f1e03e5e70 Mon Sep 17 00:00:00 2001
From: Jeremy Lakeman <Jeremy.Lakeman@gmail.com>
Date: Thu, 29 Aug 2013 16:51:50 +0930
Subject: [PATCH] Send successful, in-order ACK's based on link RTT

---
 route_link.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/route_link.c b/route_link.c
index 2ac8e366..77e435f6 100644
--- a/route_link.c
+++ b/route_link.c
@@ -964,8 +964,11 @@ int link_state_ack_soon(struct subscriber *subscriber){
     RETURN(0);
 
   time_ms_t now = gettime_ms();
-  if (neighbour->using_us && neighbour->next_neighbour_update > now + 80){
-    neighbour->next_neighbour_update = now + 80;
+  if (neighbour->using_us 
+    && subscriber->reachable & REACHABLE_DIRECT 
+    && subscriber->destination){
+    if (neighbour->next_neighbour_update > now + subscriber->destination->min_rtt)
+      neighbour->next_neighbour_update = now + subscriber->destination->min_rtt;
   }
   update_alarm(neighbour->next_neighbour_update);
   OUT();