mwan3: refactoring mwan3track action handling

Refactoring the score handling, so that only one action could take place
during run. The behaviour should be more comprehensible, since several
score actions are not processed at the same time.

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

net/mwan3/files/usr/sbin/mwan3track

@@ -351,34 +351,32 @@ main() {
 			if [ $score -lt $up ]; then
 				score=0
 				[ ${keep_failure_interval} -eq 1 ] && sleep_time=$failure_interval
-			else
+			elif [ $score -eq $up ]; then
+				disconnecting
+				sleep_time=$failure_interval
+				disconnected
+			elif [ $score -gt $up ]; then
 				disconnecting
 				sleep_time=$failure_interval
 			fi
-
-			if [ $score -eq $up ]; then
-				disconnected
-				score=0
-			fi
 		else
 			if [ $score -lt $((down+up)) ] && [ $lost -gt 0 ]; then
-				connecting
 				LOG info "Lost $((lost*count)) ping(s) on interface $INTERFACE ($DEVICE). Current score: $score"
 			fi
 
 			let score++
 			lost=0
 
-			if [ $score -gt $up ]; then
+			if [ $score -lt $up ]; then
-				echo "online" > $MWAN3TRACK_STATUS_DIR/$INTERFACE/STATUS
+				connecting
-				score=$((down+up))
+				sleep_time=$recovery_interval
-			elif [ $score -le $up ]; then
+			elif [ $score -eq $up ]; then
 				connecting
 				sleep_time=$recovery_interval
-			fi
-
-			if [ $score -eq $up ]; then
 				connected
+			elif [ $score -gt $up ]; then
+				echo "online" > $MWAN3TRACK_STATUS_DIR/$INTERFACE/STATUS
+				score=$((down+up))
 			fi
 		fi