# Copyright (c) 2007-2008 Roy Marples <roy@marples.name>
# All rights reserved. Released under the 2-clause BSD license.

_config_vars="$_config_vars ccwgroup"

ccwgroup_depend()
{
	before interface 
}

ccwgroup_pre_start()
{
	local ccwgroup="$(_get_array "ccwgroup_${IFVAR}")"
	[ -z "${ccwgroup}" ] && return 0

	if [ ! -d /sys/bus/ccwgroup ]; then
		modprobe qeth
		if [ ! -d /sys/bus/ccwgroup ]; then
			eerror "ccwgroup support missing in kernel"
			return 1
		fi
	fi

	einfo "Enabling ccwgroup on ${IFACE}"
	local x= ccw= first= layer2=
	for x in ${ccwgroup}; do
		[ -z "${first}" ] && first=${x}
		ccw="${ccw}${ccw:+,}${x}"
	done
	if [ -e /sys/devices/qeth/"${first}" ]; then
		echo "0" >/sys/devices/qeth/"${first}"/online
	else
		echo "${ccw}" >/sys/bus/ccwgroup/drivers/qeth/group
	fi
	eval layer2=\$qeth_layer2_${IFVAR}
	echo "${layer2:-0}" > /sys/devices/qeth/"${first}"/layer2
	echo "1" >/sys/devices/qeth/"${first}"/online
	eend $?
}

ccwgroup_pre_stop()
{
	# Erase any existing ccwgroup to be safe
	service_set_value ccwgroup_device ""
	
	[ ! -L /sys/class/net/"${FACE}"/driver ] && return 0
	local driver="$(readlink /sys/class/net/"${IFACE}"/driver)"
	case "${diver}" in
		*/bus/ccwgroup/*);;
		*) return 0;;
	esac

	local device="$(readlink /sys/class/net/"${IFACE}"/device)"
	device=${device##*/}
	service_set_value ccwgroup_device "${device}"
}

ccwgroup_post_stop()
{
	local device="$(service_get_value ccwgroup_device)"
	[ -z "${device}" ] && return 0
	
	einfo "Disabling ccwgroup on ${iface}"
	echo "0" >/sys/devices/qeth/"${device}"/online
	echo "1" >/sys/devices/qeth/"${device}"/ungroup
	eend $?
}