From ec284233ea2aa801376690313ab97473f84fc2f6 Mon Sep 17 00:00:00 2001
From: Christof Schulze <christof.schulze@gmx.net>
Date: Wed, 15 Feb 2017 20:30:36 +0100
Subject: [PATCH] gluon-core: limit memory that may be used by fq_codel to 1MB
 per AP on devices with less than 48MB RAM to avoid OOM

---
 .../etc/hotplug.d/ieee80211/01-gluon-core-codel-memusage  | 8 ++++++++
 1 file changed, 8 insertions(+)
 create mode 100755 package/gluon-core/files/etc/hotplug.d/ieee80211/01-gluon-core-codel-memusage

diff --git a/package/gluon-core/files/etc/hotplug.d/ieee80211/01-gluon-core-codel-memusage b/package/gluon-core/files/etc/hotplug.d/ieee80211/01-gluon-core-codel-memusage
new file mode 100755
index 00000000..ba37b142
--- /dev/null
+++ b/package/gluon-core/files/etc/hotplug.d/ieee80211/01-gluon-core-codel-memusage
@@ -0,0 +1,8 @@
+#!/bin/sh
+if [ "${ACTION}" = "add" ]; then
+
+	RAM=$(grep MemTotal /proc/meminfo |awk '{print $2}')
+	if [ "$RAM" -lt $((48*1024)) ]; then
+		echo "fq_memory_limit 1048576" > "/sys/kernel/debug/ieee80211/$DEVICENAME/aqm"
+	fi
+fi