#!/bin/sh
set -e

# gather params for a given prefix, based on executor-scripts/linux/tunnel.
gather_params() {
	set | sed -E "
		s/^IF_${1}_([A-Z0-9_]+)=(.+)/\1\n\2/
		ta
		d
		:a
		h
		y/ABCDEFGHIJKLMNOPQRSTUVWXYZ/abcdefghijklmnopqrstuvwxyz/
		P
		g
	        s/.*\n//" | sed -E "s/_/-/g"
}

case "$PHASE" in
pre-up)
	settings="\
	${IF_ETHTOOL_ETHERNET_PORT:+ port $IF_ETHTOOL_ETHERNET_PORT}
	${IF_ETHTOOL_MSGLVL:+ msglvl $IF_ETHTOOL_MSGLVL}
	"
	[ -z "$settings" ] || $MOCK ethtool --change "$IFACE" $settings
	;;
up)
	# first do the link settings.
	link_settings="${IF_ETHTOOL_LINK_SPEED:+ speed $IF_ETHTOOL_LINK_SPEED}${IF_ETHTOOL_LINK_DUPLEX:+ duplex $IF_ETHTOOL_LINK_DUPLEX}"

	# ethernet-wol can have a second arg (key), split into $1 and $2
	set -- $IF_ETHTOOL_ETHERNET_WOL
	link_settings="$link_settings${1:+ wol $1}${2:+ sopass $2}"

	# handle ethtool-ethernet-autoneg like Debian would
	case "$IF_ETHTOOL_ETHERNET_AUTONEG" in
	'')
		;;
	on|off)
		link_settings="$link_settings autoneg $IF_ETHTOOL_ETHERNET_AUTONEG"
		;;
	*)
		link_settings="$link_settings autoneg on advertise $IF_ETHTOOL_ETHERNET_AUTONEG"
		;;
	esac

	[ -z "$link_settings" ] || $MOCK ethtool --change "$IFACE" $link_settings

	pause_settings=$(gather_params ETHTOOL_PAUSE)
	[ -z "$pause_settings" ] || $MOCK ethtool --pause "$IFACE" $pause_settings

	offload_settings=$(gather_params ETHTOOL_OFFLOAD)
	[ -z "$offload_settings" ] || $MOCK ethtool --offload "$IFACE" $offload_settings

	dma_settings=$(gather_params ETHTOOL_DMA_RING)
	[ -z "$dma_settings" ] || $MOCK ethtool --set-ring "$IFACE" $dma_settings

	coalesce_settings=$(gather_params ETHTOOL_COALESCE)
	[ -z "$coalesce_settings" ] || $MOCK ethtool --coalesce "$IFACE" $coalesce_settings
	;;
esac