net/mwan3: add mwan3.user hotplug script

Signed-off-by: Florian Eckert <fe@dev.tdt.de>

net/mwan3/files/etc/hotplug.d/iface/16-mwan3-user

@@ -0,0 +1,12 @@
+#!/bin/sh
+
+[ -f "/etc/mwan3.user" ] && {
+	. /lib/functions.sh
+
+	config_load mwan3
+	config_get enabled $INTERFACE enabled 0
+	[ "${enabled}" = "1" ] || exit 0
+	/bin/sh /etc/mwan3.user $ACTION $INTERFACE $DEVICE
+}
+
+exit 0

net/mwan3/files/etc/mwan3.user

@@ -0,0 +1,11 @@
+#!/bin/sh
+#
+# This file is interpreted as shell script.
+# Put your custom mwan3 action here, they will
+# be executed with each netifd hotplug interface event
+# on interfaces for which mwan3 is enabled.
+#
+# Parameter values from hotplug.d
+# $1 = ACTION (ifup/ifdown)
+# $2 = INTERFACE (wan/lan/...)
+# $3 = DEVICE (eth0/wwan0/...)