#!/bin/bash

#************************************************************************************
# $1 netcard name [ETH0 | ETH1] 
# $2 netcard speed [10 | 100 | 1000 ]
# $3 netcard duplex [half | full]
# $4 auto negotiation [on | off]

if [ -z "$1" ]; then
  echo "Netcard name is not given."
  exit 1
fi

DEVICE_NAME=$(/root/eth_alias_omu.sh | awk ‘{if($3=="’${1}’"){print $1}}’)
if [ -z "$DEVICE_NAME" ]; then
  echo "No such device"
  exit 1
fi

if [ "$2" != "10" ] && [ "$2" != "100" ] && [ "$2" != "1000" ];then
  echo "The value of netcard speed is invalid." 
  exit 1
fi

if [ "$3" != "half" ] && [ "$3" != "full" ];then
  echo "The value of netcard duplex is invalid." 
  exit 1
fi

if [ "$4" != "on" ] && [ "$4" != "off" ];then
  echo "The value of auto negotiation is invalid." 
  exit 1
fi

NETCARD_SPEED=$(ethtool $DEVICE_NAME | grep "Speed" | awk -F’:’ ‘{print $2}’ | sed "s/.* \([0-9]*\)Mb.*/\1/")
NETCARD_DUPLEX=$(ethtool $DEVICE_NAME | grep "Duplex" | awk -F’:’ ‘{print $2}’)
AUTO_NEG=$(ethtool $DEVICE_NAME | grep "Auto-negotiation" | awk -F’:’ ‘{print $2}’)

if [ "$2" = "$NETCARD_SPEED" ] && [ "$3" = "$NETCARD_DUPLEX" ] && [ "$4" = "$AUTO_NEG" ]; then
  echo "No data modifyed." 
  exit 1
fi

ETHTOOL_MODESET=$(grep "ethtool -s $DEVICE_NAME" /etc/rc.d/rc.local)
if [ -z "$ETHTOOL_MODESET" ]; then
  echo "ethtool -s ${DEVICE_NAME} speed $2 duplex $3 autoneg $4" >> /etc/rc.d/rc.local
else
  sed -i -e "/ethtool -s ${DEVICE_NAME}/c\\ethtool -s ${DEVICE_NAME} speed $2 duplex $3 autoneg $4" /etc/rc.d/rc.local  
fi

ethtool -s "$DEVICE_NAME" speed "$2" duplex "$3" autoneg "$4"
if [ $? -eq 0 ]; then
  echo "Succeed to set netcard workmode."
else
  echo "Failed to set netcard workmode."
fi