From dd206b7d0bc4a7de739b6dbccbac5b5ffcae9024 Mon Sep 17 00:00:00 2001
From: Florian Eckert <fe@dev.tdt.de>
Date: Tue, 15 Jan 2019 10:20:02 +0100
Subject: [PATCH] mwan3: lock critical mwan3rtmon section

Signed-off-by: Florian Eckert <fe@dev.tdt.de>
---
 net/mwan3/files/usr/sbin/mwan3rtmon | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/net/mwan3/files/usr/sbin/mwan3rtmon b/net/mwan3/files/usr/sbin/mwan3rtmon
index afdc96d1a..f8e6ec081 100755
--- a/net/mwan3/files/usr/sbin/mwan3rtmon
+++ b/net/mwan3/files/usr/sbin/mwan3rtmon
@@ -23,11 +23,16 @@ main() {
 	config_get rtmon_interval globals rtmon_interval '5'
 
 	sleep 3
-	while mwan3_rtmon_ipv4 || mwan3_rtmon_ipv6; do
+	while true; do
+		mwan3_lock
+		[ mwan3_remon_ipv4 = "1" ] || \
+		[ mwan3_rtmon_ipv6 = "1" ] && break
+		mwan3_unlock
 		[ "$rtmon_interval" = "0" ] && break
 		sleep "$rtmon_interval" &
 		wait
 	done
+	mwan3_unlock
 }
 
 main "$@"