interface log

log.sh

#!/bin/sh

# cron script for checking wlan connectivity
# change xxx to whatever IP you want to check.
IP_FOR_TEST="xxx"
PING_COUNT=1

PING="/bin/ping"
IFUP="/sbin/ifup"
IFDOWN="/sbin/ifdown --force"

INTERFACE="wimax0"

FFLAG="/opt/check_lan/stuck.fflg"

# Red LED - uses GPIO17
echo "17" > /sys/class/gpio/export
echo "out" > /sys/class/gpio/gpio17/direction

# Green LED - uses GPIO22
echo "22" > /sys/class/gpio/export
echo "out" > /sys/class/gpio/gpio22/direction

# ping test
$PING -c $PING_COUNT $IP_FOR_TEST > /dev/null 2> /dev/null
if [ $? -ge 1 ]
then
	logger "$INTERFACE seems to be down, trying to bring it up..."

	echo "1" > /sys/class/gpio/gpio17/value # lit the red led since the interface is down
	echo "0" > /sys/class/gpio/gpio22/value

	if [ -e $FFLAG ]
		then
		logger "$INTERFACE is still down, REBOOT to recover ..."
		rm -f $FFLAG 2>/dev/null
		sudo reboot
	else
		touch $FFLAG
		logger $(sudo $IFDOWN $INTERFACE)
		sleep 10
		logger $(sudo $IFUP $INTERFACE)
	fi
else
	echo "0" > /sys/class/gpio/gpio17/value
	echo "1" > /sys/class/gpio/gpio22/value

	# logger "$INTERFACE is up"
	rm -f $FFLAG 2>/dev/null
fi