net/mwan3: move mwan3track clean up to mwan3 cmd

This is usefull to see the last state of the interface with ubus.

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

net/mwan3/files/lib/mwan3/mwan3.sh

@@ -8,6 +8,8 @@ IPT6="ip6tables -t mangle -w"
 LOG="logger -t mwan3[$$] -p"
 CONNTRACK_FILE="/proc/net/nf_conntrack"
 
+MWAN3_STATUS_DIR="/var/run/mwan3track"
+
 # mwan3's MARKing mask (at least 3 bits should be set)
 MMX_MASK=0xff00
 
@@ -65,6 +67,10 @@ mwan3_unlock() {
 	lock -u /var/run/mwan3.lock
 }
 
+mwan3_lock_clean() {
+	rm -rf /var/run/mwan3.lock
+}
+
 mwan3_get_iface_id()
 {
 	local _tmp _iface _iface_count
@@ -919,3 +925,13 @@ mwan3_flush_conntrack()
 		$LOG warning "connection tracking not enabled"
 	fi
 }
+
+mwan3_track_clean()
+{
+	rm -rf "$MWAN3_STATUS_DIR/${1}" &> /dev/null
+	[ -d "$MWAN3_STATUS_DIR" ] && {
+		if [ -z "$(ls -A "$MWAN3_STATUS_DIR")" ]; then
+			rm -rf "$MWAN3_STATUS_DIR"
+		fi
+	}
+}