#!/bin/bash

TESTIP="192.168.1.1" # AP IP is reasonably choice

if [ "$1" = "-h"  ]; then
    echo "-r	only remove modules"
    echo "-w	watchdog mode"
    exit 0
fi

while [ 1 -eq 1 ]; do
	ITERATOR=0
	lsmod | grep r8180 > /dev/null
	while [ $ITERATOR -le 3 -a $? -eq 0 ]; do
		iwconfig wlan0 rate 5.5M
		iwconfig wlan0 rate 1M
		iwconfig wlan0 rate 2M
		iwconfig wlan0 rate 11M	
		iwconfig wlan0 ap off
		iwpriv wlan0 resetstats 1
		ITERATOR=$((ITERATOR+1))
	done
	
	UNLOAD_MODULES="r8180 ieee80211_rtl ieee80211_crypt_tkip_rtl ieee80211_crypt_wep_rtl ieee80211_crypt_ccmp_rtl ieee80211_crypt_rtl"
	for MODULE in ${UNLOAD_MODULES}; do
	    lsmod | grep ${MODULE} > /dev/null && rmmod ${MODULE}
	done

	if [ "$1" = "-r"  ]; then
		exit 0
	fi

	sleep 0.5s
	modprobe -v r8180
	sleep 0.5s
	iwconfig wlan0 rate 11M fixed
	sudo iwconfig wlan0 ap auto
	iwconfig wlan0 rate auto

	if [ "$1" != "-w" ]; then
		exit 0
	fi

	while [ 1 -eq 1 ]; do
		sleep 5m;
		ping -c 6 ${TESTIP}
		if [ $? -ne 0 ]; then
			break;
		fi
	done
done