#!/bin/sh

set -e

. $(dirname $0)/Config.sh
. $(dirname $0)/utils.sh

error=

# used by run
cleanup()
{
  local if

  for if in $wired_lan $wired_wan; do
    isNFS=$(isNFS $if)

    if [ "$isNFS" -eq 0 ]; then
      dhclient_stop $if || echo but no matter
    fi
  done
}

testswitch()
{
  local if isNFS server done

  for if in $wired_lan $wired_wan; do
    isNFS=$(isNFS $if)

    # don't flap the network if we're using it for nfs
    if [ "$isNFS" -eq 0 ]; then
      run dhclient_start $if
    fi

    server=$(eval echo \${iperf_server_$if})
    echo "server is $server, override with iperf_server_$if=$server $0 ..."

    ifconfig $if || echo but no matter
    run ping -c 3 $server

    if [ "$type" != quick ]; then
      while true; do
	echo "Running iperf -c $server on $if"
	speed=$(iperf -c $server -f M | grep "MBytes/sec")
	echo $speed

	# trim down to the integer number of MBytes/sec
	speed=${speed% MBytes/sec*}
	speed=${speed##* }
	speed=${speed%.*}
	
	thisresult="$if=$speed"
	result="$result $thisresult"
	echo "Speed for $if is '$speed'"

	minspeed=$(eval echo \${iperf_min_$if})
      
	if [ -z "$speed" ] || [ "$speed" -lt "$minspeed" ]; then
	  error="$if speed '$speed' is below required '$minspeed' MBytes/sec"
	  cleanup
	  return 1
	fi

	echo "<<< $thisresult -- Press enter if done or any text to run iperf on $if again"
	read done
	if [ "$done" = "" ]; then
	  break
	fi

      done
    fi

    if [ "$isNFS" -eq 0 ]; then
      run dhclient_stop $if
    fi
  done
  cleanup
}

case "$1" in
  diag | quick)
    type=$1
    if testswitch; then
      echo PASS $result
    else
      echo FAIL "$error"
    fi
    ;;
  *)
    echo "Usage: $0 {diag|quick}"
    exit 1
esac