alfred: Support multiple listening interfaces

The alfred daemon allows to be started with multiple interfaces. The first
interface is used for communication and to calculate the source mac
address. The rest of the interfaces are only used for communication.

Signed-off-by: Sven Eckelmann <sven@narfation.org>

alfred/Makefile

@@ -9,7 +9,7 @@ include $(TOPDIR)/rules.mk
 
 PKG_NAME:=alfred
 PKG_VERSION:=2019.3
-PKG_RELEASE:=0
+PKG_RELEASE:=1
 PKG_HASH:=a4c37920de497701680abb55c49cdcd11e4e7135e0e7e79259c35492a3df4766
 
 PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.gz

alfred/files/alfred.config

@@ -1,5 +1,5 @@
 config 'alfred' 'alfred'
-	option interface 'br-lan'
+	list interface 'br-lan'
 	option mode 'master'
 	option batmanif 'bat0'
 	option start_vis '1'

alfred/files/alfred.init

@@ -54,10 +54,17 @@ wait_for_ll_address() {
 	exit 1
 }
 
+append_interface()
+{
+	append "interfaces" "$1" ","
+	wait_for_ll_address "$1"
+}
+
 alfred_start() {
 	local args=""
 	local section="$1"
 	local disabled interface mode
+	local interfaces
 
 	# check if section is disabled
 	config_get_bool disabled "$section" disabled 0
@@ -65,8 +72,12 @@ alfred_start() {
 
 	args=""
 
-	config_get interface "$section" interface
+	config_list_foreach "$section" "interface" append_interface
-	append args "-i $interface"
+	if [ -z "$interfaces" ]; then
+		config_get interface "$section" interface
+		append_interface "$interface"
+	fi
+	append args "-i $interfaces"
 
 	config_get mode "$section" mode
 	[ "$mode" = "master" ] && append args "-m"
@@ -78,8 +89,6 @@ alfred_start() {
 		wait_for_dir "$batmanif" "/sys/class/net/$batmanif/mesh"
 	fi
 
-	wait_for_ll_address "$interface"
-
 	append alfred_args "$args"
 	enable=1