scripts/sta_reset_parm

#!/usr/bin/env sh

#
# Copyright (c) 2016 Wi-Fi Alliance
#
# Permission to use, copy, modify, and/or distribute this software for any
# purpose with or without fee is hereby granted, provided that the above
# copyright notice and this permission notice appear in all copies.
#
# THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
# SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER
# RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT,
# NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE
# USE OR PERFORMANCE OF THIS SOFTWARE.
#
#rm nul

declare -a array_list
index=0
i=0
st=0
tmp=""
interfacename=" "
ipaddress=" "

if [ $# -lt 2 ]
then
  echo "usage: sta_reset_parm /interface <ifName> /arp <all | ipAddr>"
  echo "2 -Command format error"
  exit
fi

# i is as parameters here
for i in $*
do
  array_list[$index]=$i
  #echo ${array_list[$index]}
  ((index++))
done

# i is as index here
for (( i = 0 ; i < $# ;  ))  ##### for params in $* do loop
do
    tmp=${array_list[$i]}
    if [ ${tmp,,} = "/interface" ] ; then
      ((i++))
      tmp=${array_list[$i]}  # find next arg
      interfacename=${tmp,,}
      #echo "find interface $interfacename"
    fi

    if [ ${tmp,,} = "/arp" ] ; then
      ((i++))
      if [ $i = $# ] ; then
         ipaddress="x"
         st=2
         ##echo " find empty arp param $ipaddress D"
      else
        tmp=${array_list[$i]}  ## find next arg
        ipaddress=${tmp,,}
      fi
      ##echo "find ipaddress $ipaddress"
    fi

    ((i++))
done

if [ $interfacename = " " -o $ipaddress = "x" ] ; then
   st=2
else

  if [ $ipaddress = "all" ] ; then
    for (( i = 0 ; i < 2 ;  ))
    do
      ip neigh flush dev $interfacename
      #echo " for all $i"
      sleep 2 ;
      ((i++))
    done
  else
    arp -i $interfacename -d $ipaddress
  fi
fi
##arp -a
if [ $st = 0 ] ; then
  echo "$st -Reset parm OK"
else
  echo "$st -Error command"
fi