mwan3: make it clearer who initiated the start

It was somewhat opaque how the variable a is questioned. To show this
better the variable is now a string and not a boolean. So you can see
directly what should happen. With a boolean you always have to think
about what it means when 0 or 1 is used.

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

net/mwan3/files/etc/hotplug.d/iface/15-mwan3

@@ -23,7 +23,7 @@ fi
 
 config_load mwan3
 /etc/init.d/mwan3 running || {
-	[ "$MWAN3_STARTUP" = 1 ] || procd_lock
+	[ "$MWAN3_STARTUP" = "init" ] || procd_lock
 	LOG notice "mwan3 hotplug $ACTION on $INTERFACE not called because globally disabled"
 	mwan3_flush_conntrack "$INTERFACE" "$ACTION"
 	exit 0
@@ -69,7 +69,7 @@ case "$ACTION" in
 		mwan3_create_iface_iptables $INTERFACE $DEVICE
 		mwan3_create_iface_rules $INTERFACE $DEVICE
 		mwan3_set_iface_hotplug_state $INTERFACE "$status"
-		if [ "$MWAN3_STARTUP" != 1 ]; then
+		if [ "$MWAN3_STARTUP" = "cmd" ]; then
 			mwan3_create_iface_route $INTERFACE $DEVICE
 	                mwan3_set_general_rules
 			[ "$status" = "online" ] && mwan3_set_policies_iptables

net/mwan3/files/etc/init.d/mwan3

@@ -36,7 +36,7 @@ start_service() {
 	mwan3_set_custom_ipset
 	mwan3_set_general_rules
 	mwan3_set_general_iptables
-	config_foreach mwan3_ifup interface 1
+	config_foreach mwan3_ifup interface "init"
 	wait $hotplug_pids
 	mwan3_set_policies_iptables
 	mwan3_set_user_rules

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

@@ -955,12 +955,12 @@ mwan3_interface_shutdown()
 
 mwan3_ifup()
 {
-	local up l3_device status interface true_iface mwan3_startup
+	local interface=$1
+	local caller=$2
 
-	interface=$1
-	mwan3_startup=$2
+	local up l3_device status true_iface
 
-	if [ "${mwan3_startup}" != 1 ]; then
+	if [ "${caller}" = "cmd" ]; then
 		# It is not necessary to obtain a lock here, because it is obtained in the hotplug
 		# script, but we still want to do the check to print a useful error message
 		/etc/init.d/mwan3 running || {
@@ -979,7 +979,7 @@ mwan3_ifup()
 	}
 	hotplug_startup()
 	{
-		env -i MWAN3_STARTUP=$mwan3_startup ACTION=ifup \
+		env -i MWAN3_STARTUP=$caller ACTION=ifup \
 		    INTERFACE=$interface DEVICE=$l3_device \
 		    sh /etc/hotplug.d/iface/15-mwan3
 	}
@@ -988,7 +988,7 @@ mwan3_ifup()
 		return
 	fi
 
-	if [ "${mwan3_startup}" = 1 ]; then
+	if [ "${caller}" = "init" ]; then
 		hotplug_startup &
 		hotplug_pids="$hotplug_pids $!"
 	else

net/mwan3/files/usr/sbin/mwan3

@@ -54,7 +54,7 @@ ifup() {
 		exit 0
 	fi
 
-	mwan3_ifup "$1"
+	mwan3_ifup "$1" "cmd"
 }
 
 interfaces()