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      1 #!/bin/sh
      2 
      3 # Copyright (c) 2015 Oracle and/or its affiliates. All Rights Reserved.
      4 # Copyright (c) International Business Machines  Corp., 2005
      5 #
      6 # This program is free software; you can redistribute it and/or
      7 # modify it under the terms of the GNU General Public License as
      8 # published by the Free Software Foundation; either version 2 of
      9 # the License, or (at your option) any later version.
     10 #
     11 # This program is distributed in the hope that it would be useful,
     12 # but WITHOUT ANY WARRANTY; without even the implied warranty of
     13 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
     14 # GNU General Public License for more details.
     15 #
     16 # You should have received a copy of the GNU General Public License
     17 # along with this program; if not, write the Free Software Foundation,
     18 # Inc.,  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
     19 #
     20 # Author: Mitsuru Chinen <mitch (at] jp.ibm.com>
     21 
     22 TCID=dns-stress01-rmt
     23 TST_TOTAL=1
     24 
     25 . test.sh
     26 
     27 # Check the arguments
     28 if [ $# -ne 7 ]; then
     29 	tst_brkm TBROK "Usage: $0 ip_ver srv_ipaddr port domain \
     30 min_id max_id connect_quantity"
     31 fi
     32 
     33 ip_ver="$1"
     34 srv_ipaddr="$2"
     35 port="$3"
     36 domain="$4"
     37 min_id="$5"
     38 max_id="$6"
     39 connect_quantity="$7"
     40 
     41 # Specify the record of dns accoring to the version of IP
     42 case $ip_ver in
     43 4)
     44 	record="A" ;;
     45 6)
     46 	record="AAAA" ;;
     47 *)
     48 	tst_brkm TBROK "$ver_opt is unknown IP version" ;;
     49 esac
     50 
     51 # Check the connectivity first
     52 dig @$srv_ipaddr -p $port node${min_id}.${domain} $record > /dev/null || \
     53 	tst_brkm TBROK "Failed to connect $srv_ipaddr"
     54 
     55 # Loop for a large number of name lookup queries
     56 num=0
     57 id=$min_id
     58 while [ $num -lt $connect_quantity ]; do
     59 	dig @$srv_ipaddr -p $port node${id}.${domain} $record > /dev/null
     60 	id=$(($id + 1))
     61 	[ $id -gt $max_id ] && id=$min_id
     62 	num=$(($num + 1))
     63 done
     64 
     65 # Check the connectivity again
     66 dig @$srv_ipaddr -p $port node${min_id}.${domain} $record > /dev/null || \
     67 	tst_brkm TBROK "Failed to connect $srv_ipaddr. dns server seems down."
     68 
     69 tst_exit
     70