#! /bin/bash
controller=`hostname`
switches=`ifconfig -a | grep sw |grep -v eth | awk '{print $1}'`

function host2ip (){
   ip=`grep $1 /etc/hosts |grep -v "ip6"|  awk '{print $1}'`
   echo $ip
}

# link.sh 00:00:00:00:ba:5e:ba:11 1 up

if [ $# != 3 ];then
 echo "usage: $0 <dpid> <port> <up|down>"
fi

src_dpid="dpid:"`echo $1 | sed s'/://g'`
src_port=$2
cmd=$3

for s in $switches; do
    dpid=`sudo ovs-ofctl  show  $s |grep dpid | awk '{print $4}'`
    if [  "x$dpid" == "x$src_dpid" ]; then
        intfs=`sudo ovs-ofctl show $s |grep addr | awk '{print $1}' | sed 's/.*(//g' | sed 's/):$//g'`
	intf_list=()
	for i in $intfs; do
	  intf_list+=($i)
        done
	intf=${intf_list[$src_port]}
        if [ x$cmd == "xup" ]; then
	    echo "sudo ifconfig ${intf}  up"
	    sudo ifconfig ${intf}  up
        elif [ x$cmd == "xdown" ]; then
	    echo "sudo ifconfig ${intf}  down"
	    sudo ifconfig ${intf}  down
        else
	    echo "sudo ifconfig ${intf}"
	    sudo ifconfig ${intf} 
        fi
    fi
done