hostapd: parametrize hostapd init script per interface

The original init script hardcodes the configuration file to use so it
cannot be re-utilized for concurrent AP/AP mode where two interfaces can
be used as SoftAP.

This commit uses the variable ${IFACE} to:
- select a specific configuration file per interface:
  /etc/hostapd_${IFACE}.conf
- create a specific PID file per interface:
  /var/run/hostapd.${IFACE}.pid

With this, the /etc/network/interfaces can use the script for using SoftAP
in different wireless interfaces.

Signed-off-by: Hector Palacios <hector.palacios@digi.com>

meta-digi-dey/recipes-connectivity/hostapd/hostapd/ccimx6ul/hostapd_wlan1.conf

@@ -4,7 +4,7 @@ interface=wlan1
 driver=nl80211
 
 # WPA2-AES encryption
-ssid=ap-wpa2aes_a
+ssid=ap-wlan1-wpa2aes_a
 auth_algs=1
 wpa=2
 wpa_key_mgmt=WPA-PSK

meta-digi-dey/recipes-connectivity/hostapd/hostapd/hostapd_wlan0.conf

@@ -4,7 +4,7 @@ interface=wlan0
 driver=nl80211
 
 # WPA2-AES encryption
-ssid=ap-wpa2aes_a
+ssid=ap-wlan0-wpa2aes_a
 auth_algs=1
 wpa=2
 wpa_key_mgmt=WPA-PSK

meta-digi-dey/recipes-connectivity/hostapd/hostapd/init

@@ -0,0 +1,59 @@
+#!/bin/sh
+DAEMON=/usr/sbin/hostapd
+NAME=hostapd
+DESC="HOSTAP Daemon"
+PIDFILE="/var/run/hostapd.${IFACE}.pid"
+ARGS="/etc/hostapd_${IFACE}.conf -B -P ${PIDFILE}"
+
+test -f $DAEMON || exit 0
+
+set -e
+
+# source function library
+. /etc/init.d/functions
+
+delay_stop() {
+	count=0
+	while [ $count -lt 9 ] ; do
+	        if pidof $DAEMON >/dev/null; then
+	                sleep 1
+	        else
+	                return 0
+	        fi
+		count=`expr $count + 1`
+	done
+	echo "Failed to stop $DESC."
+	return 1
+}
+
+case "$1" in
+    start)
+	echo -n "Starting $DESC: "
+	start-stop-daemon -S -x $DAEMON -- $ARGS
+	echo "$NAME."
+	;;
+    stop)
+	echo -n "Stopping $DESC: "
+	start-stop-daemon -K --oknodo -x $DAEMON -p ${PIDFILE}
+	echo "$NAME."
+	;;
+    restart)
+	$0 stop
+	delay_stop && $0 start
+	;;
+    reload)
+	echo -n "Reloading $DESC: "
+	killall -HUP $(basename ${DAEMON})
+	echo "$NAME."
+	;;
+    status)
+	status $DAEMON
+	exit $?
+	;;
+    *)
+	echo "Usage: $0 {start|stop|restart|reload|status}"
+	exit 1
+	;;
+esac
+
+exit 0

meta-digi-dey/recipes-connectivity/hostapd/hostapd_%.bbappend

@@ -2,11 +2,19 @@
 
 FILESEXTRAPATHS_prepend := "${THISDIR}/${BPN}:"
 
-SRC_URI += "file://hostapd.conf"
+SRC_URI_append = " file://hostapd_wlan0.conf"
+SRC_URI_append_ccimx6ul = " file://hostapd_wlan1.conf"
 
 do_install_append() {
-	# Overwrite the default hostapd.conf with our custom file
-	install -m 0644 ${WORKDIR}/hostapd.conf ${D}${sysconfdir}
+	# Remove the default hostapd.conf
+	rm -f ${WORKDIR}/hostapd.conf
+	# Install custom hostapd_IFACE.conf file
+	install -m 0644 ${WORKDIR}/hostapd_wlan0.conf ${D}${sysconfdir}
+}
+
+do_install_append_ccimx6ul() {
+	# Install custom hostapd_IFACE.conf file
+	install -m 0644 ${WORKDIR}/hostapd_wlan1.conf ${D}${sysconfdir}
 }
 
 # Do not autostart hostapd daemon, it will conflict with wpa-supplicant.