使用tc编写流量控制脚本

TC="tc"
IFCONFIG="ifconfig"
if [ "$2" = "" ];
then
	echo error
	exit 1
fi
IF=$1
IFIN="ifb0"

case $2 in
	start)
		$TC qdisc del dev $IF root
		$TC qdisc del dev $IF handle ffff: ingress
        $TC qdisc del dev $IFIN root

		BW=$3
		if [ "$BW" != "0" -a "$BW" != "-1" ]
		then
		BW=$BW"bit"
		$TC qdisc add dev $IF root handle 1: htb default 10
		$TC class add dev $IF parent 1: classid 1:1 htb rate $BW
		$TC class add dev $IF parent 1:1 classid 1:10 htb rate $BW
		fi
		BWIN=$4
		if [ "$BWIN" != "0" -a "$BWIN" != "-1" ]
		then
		BWIN=$BWIN"bit"
		$IFCONFIG $IFIN up
		$TC qdisc add dev $IF handle ffff: ingress
		$TC qdisc add dev $IFIN root handle 1: htb default 10
		$TC class add dev $IFIN parent 1: classid 1:1 htb rate $BWIN
		$TC class add dev $IFIN parent 1:1 classid 1:10 htb rate $BWIN
		$TC filter add dev $IF parent ffff: protocol ip u32 match u32 0 0 action mirred egress redirect dev $IFIN
		fi
		;;
	stop)
		$TC qdisc del dev $IF root
		$TC qdisc del dev $IF handle ffff: ingress		
		$TC qdisc del dev $IFIN root
		$IFCONFIG $IFIN down
		;;
	update)
		BW=$3
		if [ "$BW" = "" ]
		then
			echo error
			exit 1;
		fi
		BW=$BW"bit"
		$TC class change dev $IF parent 1: classid 1:1 htb rate $BW
		$TC class change dev $IF parent 1:1 classid 1:10 htb rate $BW
		;;
	*)
		echo error
		exit 1
		;;
esac
exit 0