#!/bin/sh /etc/rc.common
# Copyright (C) 2006-2011 OpenWrt.org

START=95

disable_gro_gso() {
	for eth in $(ifconfig | grep "^eth\|^dsa|^lan|^wan" | awk '{print $1}' | sort | uniq); do
		ethtool -k "$eth" | grep -q "generic-receive-offload: off" || ethtool -K "$eth" gro off
		ethtool -k "$eth" | grep -q "generic-segmentation-offload: off" || ethtool -K "$eth" gso off
	done
}

enable_gro_gso() {
	for eth in $(ifconfig | grep "^eth\|^dsa|^lan|^wan" | awk '{print $1}' | sort | uniq); do
		[[ "$(uname -m)" != arm* ]] && ethtool -k "$eth" | grep -q "generic-receive-offload: on" || ethtool -K "$eth" gro on
		ethtool -k "$eth" | grep -q "generic-segmentation-offload: on" || ethtool -K "$eth" gso on
	done
}

start() {
	test -c /dev/natflow_ctl || return 0
	[ "$(uci -q get firewall.@defaults[0].natflow)" != 1 ] && return 0
	disable_gro_gso
	delay_pkts=$(uci -q get firewall.@defaults[0].natflow_delay_pkts || echo 0)
	echo disabled=0 >/dev/natflow_ctl
	echo "delay_pkts=$delay_pkts" >/dev/natflow_ctl
	echo ifname_clear >/dev/natflow_ctl
	logger -t natflow "natflow has been enabled"
}

stop() {
	test -c /dev/natflow_ctl || return 0
	enable_gro_gso
	echo disabled=1 >/dev/natflow_ctl
	logger -t natflow "natflow has been disabled"
}

restart() {
	stop
	start
}