clear

K_VER=$(uname -r)
K_FLAG=2$(echo ${K_VER} | sed -ne 's/^2\.[4]\..*/4/p')x
driver_name=${1}

if [ -z "${driver_name}" ]; then
	echo "The Linux driver supports RTL8168B and RTL8100E."
	echo "Usage: ./build driver_name"
	exit 1
elif [ \( "${driver_name}" != 'RTL8168B' \) -a \
       \( "${driver_name}" != 'RTL8100E' \) ]; then
	echo "The Linux driver for ${driver_name} is not supported."
	exit 1
fi

if [ "${K_FLAG}" != '24x' ]; then
	cat ./src/Makefile_linux26x | sed "s/RTL81[0-9][0-9][BE]/${driver_name}/g" >| ./src/Makefile_linux26x.tmp
	rm ./src/Makefile_linux26x
	mv ./src/Makefile_linux26x.tmp ./src/Makefile_linux26x
fi

make clean modules

if [ "${K_FLAG}" = '24x' ]; then
	mv ./src/rtl_ethernet.o ./src/${driver_name}.o
fi

rtl_nic=$(lsmod | grep 'RTL81[0-9][0-9][A-Z]' | sed -e 's/\(RTL81[0-9][0-9][A-Z]\)\(.*\)/\1/g')
inserted=$(lsmod | grep 'RTL81[0-9][0-9][A-Z]' | sed -e 's/\(RTL81[0-9][0-9][A-Z]\)\(.*\)\([0-9]\)/\3/g')

if [ -n "${rtl_nic}" ]; then
	if [ "${inserted}" != '0' ]; then
		ifconfig eth0 down
	fi
	rmmod ${rtl_nic}
fi

if [ "${K_FLAG}" != '24x' ]; then
	insmod ./src/${driver_name}.ko
else
	insmod ./src/${driver_name}.o
fi