testcases/network/stress/ssh/ssh4-stress - chromiumos/third_party/ltp - Git at Google

 #!/bin/sh

 ################################################################################
 ##                                                                            ##
 ## Copyright (c) International Business Machines  Corp., 2005                 ##
 ##                                                                            ##
 ## This program is free software;  you can redistribute it and#or modify      ##
 ## it under the terms of the GNU General Public License as published by       ##
 ## the Free Software Foundation; either version 2 of the License, or          ##
 ## (at your option) any later version.                                        ##
 ##                                                                            ##
 ## This program is distributed in the hope that it will be useful, but        ##
 ## WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY ##
 ## or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License   ##
 ## for more details.                                                          ##
 ##                                                                            ##
 ## You should have received a copy of the GNU General Public License          ##
 ## along with this program;  if not, write to the Free Software               ##
 ## Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA    ##
 ##                                                                            ##
 ##                                                                            ##
 ################################################################################
 #
 # File:
 #   ssh4-stress
 #
 # Description:
 #   Stress test for SSH over IPv4
 #   test01 - Verify the ssh server or the kernel is not down after a large
 #            number of ssh sessions are created.
 #   test02 - Verify the ssh server or the kernel is not down after a large
 #            number of clients log in/out asynchronously for a long time.
 #   test03 - Verify the ssh server or the kernek is not down after a TCP
 #            traffic is forwarded via ssh port-forwarding for a long time
 #
 # Author:
 #   Mitsuru Chinen <mitch@jp.ibm.com>
 #
 # History:
 #	Oct 19 2005 - Created (Mitsuru Chinen)
 #
 #-----------------------------------------------------------------------
 # Uncomment line below for debug output.
 #trace_logic=${trace_logic:-"set -x"}
 $trace_logic

 # Make sure the value of LTPROOT
 LTPROOT=${LTPROOT:-`(cd ../../../../ ; pwd)`}
 export LTPROOT

 # Total number of the test case
 TST_TOTAL=3
 export TST_TOTAL

 # The version of IP
 IP_VER=${IP_VER:-4}

 # Default of the test case ID and the test case count
 TCID=ssh${IP_VER}-stress
 TST_COUNT=0
 export TCID
 export TST_COUNT

 # Check the environmanet variable
 . check_envval || exit $TST_TOTAL

 # Dulation of the test [sec]
 NS_DURATION=${NS_DURATION:-3600}      # 1 hour

 # Quantity of the connection for multi connection test
 CONNECTION_TOTAL=${CONNECTION_TOTAL:-4000}

 # Temporary direcotry to store sshd setting or ssh key
 # Note: ssh doesn't work when those directory are under /tmp.
 SSH_TMPDIR_PARENT="/root"

 # The number of the test link where tests run
 LINK_NUM=${LINK_NUM:-0}

 # Network portion of the IPv4 address
 IPV4_NETWORK=${IPV4_NETWORK:-"10.0.0"}

 # Host portion of the IPv4 address on the local host
 LHOST_IPV4_HOST=${LHOST_IPV4_HOST:-"2"}

 # Host portion of the IPv4 address on the remote host
 RHOST_IPV4_HOST=${RHOST_IPV4_HOST:-"1"}

 # Network portion of the IPv6 address
 IPV6_NETWORK="fd00:1:1:1"

 # Host portion of the IPv6 address of the local host
 LHOST_IPV6_HOST=":2"

 # Host portion of the IPv6 address of the remote host
 RHOST_IPV6_HOST=":1"

 #-----------------------------------------------------------------------
 #
 # Function:
 #   do_cleanup
 #
 # Description:
 #   Clean up after running ssh stress test
 #
 #-----------------------------------------------------------------------
 do_cleanup()
 {
     # Stop the ssh daemon
     kill `cat ${sshd_dir}/sshd.pid`

     # Delete the dictory that stores configuration files
     rm -rf $sshd_dir
     $LTP_RSH $RHOST "rm -rf $rhost_ssh_dir"

     # Delete the temporary files
     rm -f $message_file

     # Initialize the interface
     initialize_if lhost ${LINK_NUM}
     initialize_if rhost ${LINK_NUM}

     # Kill the tcp traffic server
     killall_tcp_traffic
 }


 #-----------------------------------------------------------------------
 #
 # Function:
 #   do_setup
 #
 # Description:
 #   Setup for the ssh stress tests
 #   - Assign IP address to the interfaces belong to the specified Link
 #   - Run a sshd daemon for testing
 #   - Create keys for password-less login
 #
 # Set Values:
 #   lhost_addr:   IP address of the local host
 #   rhost_addr:   IP address of the remote host
 #   rhost_config: ssh_config at the remote host
 #
 #-----------------------------------------------------------------------
 do_setup()
 {
     trap do_cleanup 0

     # Get the sshd command with absolute path
     SSHD=`which sshd`
     if [ x"${SSHD}" = x ]; then
 	tst_resm TBROK "sshd daemon is not found"
 	exit $TST_TOTAL
     fi

     # Kill the tcp traffic server
     killall_tcp_traffic

     # Initialize the interface
     initialize_if lhost ${LINK_NUM}
     initialize_if rhost ${LINK_NUM}

     # Get the Interface name
     lhost_ifname=`get_ifname lhost ${LINK_NUM}`
     if [ $? -ne 0 ]; then
 	tst_resm TBROK "Failed to get the interface name at the local host"
 	exit $TST_TOTAL
     fi

     case $IP_VER in
 	4)
 	# Set IPv4 address to the interfaces
 	set_ipv4addr lhost $LINK_NUM ${IPV4_NETWORK} ${LHOST_IPV4_HOST}
 	if [ $? -ne 0 ]; then
 	    tst_resm TBROK "Failed to add any IP address at the local host"
 	    exit 1
 	fi
 	set_ipv4addr rhost $LINK_NUM ${IPV4_NETWORK} ${RHOST_IPV4_HOST}
 	if [ $? -ne 0 ]; then
 	    tst_resm TBROK "Failed to add any IP address at the remote host"
 	    exit 1
 	fi

 	lhost_addr="${IPV4_NETWORK}.${LHOST_IPV4_HOST}"
 	rhost_addr="${IPV4_NETWORK}.${RHOST_IPV4_HOST}"
 	check_icmpv4_connectivity $lhost_ifname $rhost_addr
 	if [ $? -ne 0 ]; then
 	    tst_resm TBROK "Failed to ping to $rhost_addr"
 	    exit 1
 	fi
 	;;

 	6)
 	# Set IPv6 address to the interfaces
 	add_ipv6addr lhost $LINK_NUM ${IPV6_NETWORK} ${LHOST_IPV6_HOST}
 	if [ $? -ne 0 ]; then
 	    tst_resm TBROK "Failed to add any IP address at the local host"
 	    exit 1
 	fi
 	add_ipv6addr rhost $LINK_NUM ${IPV6_NETWORK} ${RHOST_IPV6_HOST}
 	if [ $? -ne 0 ]; then
 	    tst_resm TBROK "Failed to add any IP address at the remote host"
 	    exit 1
 	fi

 	lhost_addr="${IPV6_NETWORK}:${LHOST_IPV6_HOST}"
 	rhost_addr="${IPV6_NETWORK}:${RHOST_IPV6_HOST}"
 	check_icmpv6_connectivity $lhost_ifname $rhost_addr
 	if [ $? -ne 0 ]; then
 	    tst_resm TBROK "Failed to ping to $rhost_addr"
 	    exit 1
 	fi
 	;;

 	*)
 	tst_resm TBROK "Unknown IP version: $IP_VER"
 	exit 1
 	;;
     esac

     #
     # Start sshd for testing
     #
     port=`find_portbundle tcp 1025 1`
     if [ $? -ne 0 ]; then
 	tst_resm TFAIL "No port is available."
 	exit 1
     fi
     sshd_dir=`TMPDIR="$SSH_TMPDIR_PARENT" mktemp -d`
     cat << EOD > ${sshd_dir}/sshd_config
 Port $port
 ListenAddress $lhost_addr
 PermitRootLogin yes
 AuthorizedKeysFile ${sshd_dir}/authorized_keys
 PasswordAuthentication no
 AllowTcpForwarding yes
 TCPKeepAlive yes
 UseDNS no
 PidFile ${sshd_dir}/sshd.pid
 EOD


     $SSHD -f ${sshd_dir}/sshd_config
     if [ $? -ne 0 ]; then
 	tst_resm TBROK "Failed to run sshd daemon."
 	exit 1
     fi

     #
     # Generate configuration file and key at the remote host
     #
     rhost_ssh_dir=`$LTP_RSH $RHOST "mktemp -d -p $SSH_TMPDIR_PARENT"`
     ret=`$LTP_RSH $RHOST '( cd '$rhost_ssh_dir' && ssh-keygen -t rsa -N "" -f id_rsa ) >/dev/null 2>&1 ; echo $?'`
     if [ $ret -ne 0 ]; then
 	tst_resm TBROK "Failed to generate key."
 	exit 1
     fi

     rhost_config=${rhost_ssh_dir}/ssh_config
     rmtshell="$LTP_RSH"
     echo $LTP_RSH | grep "rsh.*-n" >/dev/null 2>&1
     if [ $? -eq 0 ]; then
 	rmtshell="`echo $LTP_RSH | sed "s/-n//"`"
     fi

     cat << EOD | $rmtshell $RHOST "cat > $rhost_config"
 Port $port
 StrictHostKeyChecking no
 PasswordAuthentication no
 UserKnownHostsFile $rhost_ssh_dir/known_hosts
 IdentityFile $rhost_ssh_dir/id_rsa
 EOD
     $LTP_RSH $RHOST "cd $rhost_ssh_dir && cat id_rsa.pub" > ${sshd_dir}/authorized_keys
     $LTP_RSH $RHOST "chmod 700 $rhost_ssh_dir ; chmod 600 $rhost_ssh_dir/*"

     chmod 700 $sshd_dir
     chmod 600 $sshd_dir/*
 }


 #-----------------------------------------------------------------------
 #
 # Function:
 #   test01
 #
 # Description:
 #   Verify the ssh connectivity is not broken after creating a large
 #   number of ssh sessions
 #
 #-----------------------------------------------------------------------
 test01()
 {
     TCID=ssh${IP_VER}-stress01
     TST_COUNT=1
     tst_resm TINFO "Verify the ssh connectivity over IPv${IP_VER} is not broken after creating ${CONNECTION_TOTAL} ssh sessions"

     # Script name at the remote host
     rmtscript="ssh-stress01-rmt"

     # Run the script at the remote host
     message_file=`mktemp -p $TMPDIR`
     not_run_rmtscript=true
     for rmtdir in ${LTPROOT}/testcases/bin ${PWD} ; do
 	ret=`$LTP_RSH $RHOST 'test -x '${rmtdir}/${rmtscript}' ; echo $?'`
 	if [ $ret -eq 0 ]; then
 	    not_run_rmtscript=false
 	    $LTP_RSH $RHOST "${rmtdir}/${rmtscript} $IP_VER $lhost_addr $rhost_config $CONNECTION_TOTAL" > $message_file
 	    break
 	fi
     done
     if $not_run_rmtscript ; then
 	tst_resm TBROK "Failed to run the test script at the remote host"
 	rm -f $message_file
 	exit 1
     fi

     if [ -s $message_file ]; then
 	tst_resm TFAIL "`cat $message_file`"
 	rm -f $message_file
 	return 1
     else
 	tst_resm TPASS "Test is finished successfully."
 	rm -f $message_file
 	return 0
     fi

 }


 #-----------------------------------------------------------------------
 #
 # Function:
 #   test02
 #
 # Description:
 #   Verify the ssh connectivity is not broken after logged in/out
 #   by many clients asynchronously for a long time
 #
 #-----------------------------------------------------------------------
 test02()
 {
     TCID=ssh${IP_VER}-stress02
     TST_COUNT=2
     tst_resm TINFO "Verify the ssh connectivity over IPv${IP_VER} is not broken after logged in/out by many clients asynchronously in ${NS_DURATION}[sec]"
     tst_resm TINFO "The number of client is not over $CONNECTION_TOTAL"

     # Script name at the remote host
     rmtscript="ssh-stress02-rmt"

     # Run the script at the remote host
     message_file=`mktemp -p $TMPDIR`
     not_run_rmtscript=true
     for rmtdir in ${LTPROOT}/testcases/bin ${PWD} ; do
 	ret=`$LTP_RSH $RHOST 'test -x '${rmtdir}/${rmtscript}' ; echo $?'`
 	if [ $ret -eq 0 ]; then
 	    not_run_rmtscript=false
 	    $LTP_RSH $RHOST "${rmtdir}/${rmtscript} $IP_VER $lhost_addr $rhost_config $CONNECTION_TOTAL $NS_DURATION" > $message_file
 	    break
 	fi
     done
     if $not_run_rmtscript ; then
 	tst_resm TBROK "Failed to run the test script at the remote host"
 	rm -f $message_file
 	exit 1
     fi

     if [ -s $message_file ]; then
 	tst_resm TFAIL "`cat $message_file`"
 	rm -f $message_file
 	return 1
     else
 	tst_resm TPASS "Test is finished successfully."
 	rm -f $message_file
 	return 0
     fi
 }


 #-----------------------------------------------------------------------
 #
 # Function:
 #   test03
 #
 # Description:
 #   Verify the ssh connectivity is not broken after forwarding TCP traffic
 #   for a long time
 #
 #-----------------------------------------------------------------------
 test03()
 {
     TCID=ssh${IP_VER}-stress03
     TST_COUNT=3
     tst_resm TINFO "Verify the ssh connectivity over IPv${IP_VER} is not broken after forwarding TCP traffic in ${NS_DURATION}[sec]"

     # Script name at the remote host
     rmtscript="ssh-stress03-rmt"

     # Run a TCP traffic server
     traffic_port=`find_portbundle tcp 1025 1` || exit 1
     info_file=`mktemp -p $TMPDIR`
     ns-tcpserver -b -f $IP_VER -p $traffic_port -o $info_file
     if [ $? -ne 0 ]; then
 	tst_resm TFAIL "Failed to run a tcp traffic server."
 	rm -f $info_file
 	exit 1
     fi

     while true ; do
 	if [ -s $info_file ]; then
 	    break
 	fi
     done

     server_pid=`grep PID: $info_file | cut -f 2 -d ' '`
     rm -f $info_file

     # Run the script at the remote host
     message_file=`mktemp -p $TMPDIR`
     not_run_rmtscript=true
     for rmtdir in ${LTPROOT}/testcases/bin ${PWD} ; do
 	ret=`$LTP_RSH $RHOST 'test -x '${rmtdir}/${rmtscript}' ; echo $?'`
 	if [ $ret -eq 0 ]; then
 	    not_run_rmtscript=false
 	    $LTP_RSH $RHOST "${rmtdir}/${rmtscript} $LTPROOT $IP_VER $lhost_addr $rhost_config $traffic_port $NS_DURATION" > $message_file
 	    break
 	fi
     done
     if $not_run_rmtscript ; then
 	tst_resm TBROK "Failed to run the test script at the remote host"
 	rm -f $message_file
 	exit 1
     fi

     if [ -s $message_file ]; then
 	tst_resm TFAIL "`cat $message_file`"
 	rm -f $message_file
 	return 1
     else
 	tst_resm TPASS "Test is finished successfully."
 	rm -f $message_file
 	return 0
     fi
 }


 #-----------------------------------------------------------------------
 #
 # Main
 #
 # Exit Value:
 #   The number of the failure
 #
 #-----------------------------------------------------------------------

 RC=0
 do_setup
 test01 || RC=`expr $RC + 1`
 test02 || RC=`expr $RC + 1`
 test03 || RC=`expr $RC + 1`

 exit $RC
	#!/bin/sh

	################################################################################
	## ##
	## Copyright (c) International Business Machines Corp., 2005 ##
	## ##
	## This program is free software; you can redistribute it and#or modify ##
	## it under the terms of the GNU General Public License as published by ##
	## the Free Software Foundation; either version 2 of the License, or ##
	## (at your option) any later version. ##
	## ##
	## This program is distributed in the hope that it will be useful, but ##
	## WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY ##
	## or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License ##
	## for more details. ##
	## ##
	## You should have received a copy of the GNU General Public License ##
	## along with this program; if not, write to the Free Software ##
	## Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA ##
	## ##
	## ##
	################################################################################
	#
	# File:
	# ssh4-stress
	#
	# Description:
	# Stress test for SSH over IPv4
	# test01 - Verify the ssh server or the kernel is not down after a large
	# number of ssh sessions are created.
	# test02 - Verify the ssh server or the kernel is not down after a large
	# number of clients log in/out asynchronously for a long time.
	# test03 - Verify the ssh server or the kernek is not down after a TCP
	# traffic is forwarded via ssh port-forwarding for a long time
	#
	# Author:
	# Mitsuru Chinen <mitch@jp.ibm.com>
	#
	# History:
	# Oct 19 2005 - Created (Mitsuru Chinen)
	#
	#-----------------------------------------------------------------------
	# Uncomment line below for debug output.
	#trace_logic=${trace_logic:-"set -x"}
	$trace_logic

	# Make sure the value of LTPROOT
	LTPROOT=${LTPROOT:-`(cd ../../../../ ; pwd)`}
	export LTPROOT

	# Total number of the test case
	TST_TOTAL=3
	export TST_TOTAL

	# The version of IP
	IP_VER=${IP_VER:-4}

	# Default of the test case ID and the test case count
	TCID=ssh${IP_VER}-stress
	TST_COUNT=0
	export TCID
	export TST_COUNT

	# Check the environmanet variable
	. check_envval \|\| exit $TST_TOTAL

	# Dulation of the test [sec]
	NS_DURATION=${NS_DURATION:-3600} # 1 hour

	# Quantity of the connection for multi connection test
	CONNECTION_TOTAL=${CONNECTION_TOTAL:-4000}

	# Temporary direcotry to store sshd setting or ssh key
	# Note: ssh doesn't work when those directory are under /tmp.
	SSH_TMPDIR_PARENT="/root"

	# The number of the test link where tests run
	LINK_NUM=${LINK_NUM:-0}

	# Network portion of the IPv4 address
	IPV4_NETWORK=${IPV4_NETWORK:-"10.0.0"}

	# Host portion of the IPv4 address on the local host
	LHOST_IPV4_HOST=${LHOST_IPV4_HOST:-"2"}

	# Host portion of the IPv4 address on the remote host
	RHOST_IPV4_HOST=${RHOST_IPV4_HOST:-"1"}

	# Network portion of the IPv6 address
	IPV6_NETWORK="fd00:1:1:1"

	# Host portion of the IPv6 address of the local host
	LHOST_IPV6_HOST=":2"

	# Host portion of the IPv6 address of the remote host
	RHOST_IPV6_HOST=":1"

	#-----------------------------------------------------------------------
	#
	# Function:
	# do_cleanup
	#
	# Description:
	# Clean up after running ssh stress test
	#
	#-----------------------------------------------------------------------
	do_cleanup()
	{
	# Stop the ssh daemon
	kill `cat ${sshd_dir}/sshd.pid`

	# Delete the dictory that stores configuration files
	rm -rf $sshd_dir
	$LTP_RSH $RHOST "rm -rf $rhost_ssh_dir"

	# Delete the temporary files
	rm -f $message_file

	# Initialize the interface
	initialize_if lhost ${LINK_NUM}
	initialize_if rhost ${LINK_NUM}

	# Kill the tcp traffic server
	killall_tcp_traffic
	}


	#-----------------------------------------------------------------------
	#
	# Function:
	# do_setup
	#
	# Description:
	# Setup for the ssh stress tests
	# - Assign IP address to the interfaces belong to the specified Link
	# - Run a sshd daemon for testing
	# - Create keys for password-less login
	#
	# Set Values:
	# lhost_addr: IP address of the local host
	# rhost_addr: IP address of the remote host
	# rhost_config: ssh_config at the remote host
	#
	#-----------------------------------------------------------------------
	do_setup()
	{
	trap do_cleanup 0

	# Get the sshd command with absolute path
	SSHD=`which sshd`
	if [ x"${SSHD}" = x ]; then
	tst_resm TBROK "sshd daemon is not found"
	exit $TST_TOTAL
	fi

	# Kill the tcp traffic server
	killall_tcp_traffic

	# Initialize the interface
	initialize_if lhost ${LINK_NUM}
	initialize_if rhost ${LINK_NUM}

	# Get the Interface name
	lhost_ifname=`get_ifname lhost ${LINK_NUM}`
	if [ $? -ne 0 ]; then
	tst_resm TBROK "Failed to get the interface name at the local host"
	exit $TST_TOTAL
	fi

	case $IP_VER in
	4)
	# Set IPv4 address to the interfaces
	set_ipv4addr lhost $LINK_NUM ${IPV4_NETWORK} ${LHOST_IPV4_HOST}
	if [ $? -ne 0 ]; then
	tst_resm TBROK "Failed to add any IP address at the local host"
	exit 1
	fi
	set_ipv4addr rhost $LINK_NUM ${IPV4_NETWORK} ${RHOST_IPV4_HOST}
	if [ $? -ne 0 ]; then
	tst_resm TBROK "Failed to add any IP address at the remote host"
	exit 1
	fi

	lhost_addr="${IPV4_NETWORK}.${LHOST_IPV4_HOST}"
	rhost_addr="${IPV4_NETWORK}.${RHOST_IPV4_HOST}"
	check_icmpv4_connectivity $lhost_ifname $rhost_addr
	if [ $? -ne 0 ]; then
	tst_resm TBROK "Failed to ping to $rhost_addr"
	exit 1
	fi
	;;

	6)
	# Set IPv6 address to the interfaces
	add_ipv6addr lhost $LINK_NUM ${IPV6_NETWORK} ${LHOST_IPV6_HOST}
	if [ $? -ne 0 ]; then
	tst_resm TBROK "Failed to add any IP address at the local host"
	exit 1
	fi
	add_ipv6addr rhost $LINK_NUM ${IPV6_NETWORK} ${RHOST_IPV6_HOST}
	if [ $? -ne 0 ]; then
	tst_resm TBROK "Failed to add any IP address at the remote host"
	exit 1
	fi

	lhost_addr="${IPV6_NETWORK}:${LHOST_IPV6_HOST}"
	rhost_addr="${IPV6_NETWORK}:${RHOST_IPV6_HOST}"
	check_icmpv6_connectivity $lhost_ifname $rhost_addr
	if [ $? -ne 0 ]; then
	tst_resm TBROK "Failed to ping to $rhost_addr"
	exit 1
	fi
	;;

	*)
	tst_resm TBROK "Unknown IP version: $IP_VER"
	exit 1
	;;
	esac

	#
	# Start sshd for testing
	#
	port=`find_portbundle tcp 1025 1`
	if [ $? -ne 0 ]; then
	tst_resm TFAIL "No port is available."
	exit 1
	fi
	sshd_dir=`TMPDIR="$SSH_TMPDIR_PARENT" mktemp -d`
	cat << EOD > ${sshd_dir}/sshd_config
	Port $port
	ListenAddress $lhost_addr
	PermitRootLogin yes
	AuthorizedKeysFile ${sshd_dir}/authorized_keys
	PasswordAuthentication no
	AllowTcpForwarding yes
	TCPKeepAlive yes
	UseDNS no
	PidFile ${sshd_dir}/sshd.pid
	EOD


	$SSHD -f ${sshd_dir}/sshd_config
	if [ $? -ne 0 ]; then
	tst_resm TBROK "Failed to run sshd daemon."
	exit 1
	fi

	#
	# Generate configuration file and key at the remote host
	#
	rhost_ssh_dir=`$LTP_RSH $RHOST "mktemp -d -p $SSH_TMPDIR_PARENT"`
	ret=`$LTP_RSH $RHOST '( cd '$rhost_ssh_dir' && ssh-keygen -t rsa -N "" -f id_rsa ) >/dev/null 2>&1 ; echo $?'`
	if [ $ret -ne 0 ]; then
	tst_resm TBROK "Failed to generate key."
	exit 1
	fi

	rhost_config=${rhost_ssh_dir}/ssh_config
	rmtshell="$LTP_RSH"
	echo $LTP_RSH \| grep "rsh.*-n" >/dev/null 2>&1
	if [ $? -eq 0 ]; then
	rmtshell="`echo $LTP_RSH \| sed "s/-n//"`"
	fi

	cat << EOD \| $rmtshell $RHOST "cat > $rhost_config"
	Port $port
	StrictHostKeyChecking no
	PasswordAuthentication no
	UserKnownHostsFile $rhost_ssh_dir/known_hosts
	IdentityFile $rhost_ssh_dir/id_rsa
	EOD
	$LTP_RSH $RHOST "cd $rhost_ssh_dir && cat id_rsa.pub" > ${sshd_dir}/authorized_keys
	$LTP_RSH $RHOST "chmod 700 $rhost_ssh_dir ; chmod 600 $rhost_ssh_dir/*"

	chmod 700 $sshd_dir
	chmod 600 $sshd_dir/*
	}


	#-----------------------------------------------------------------------
	#
	# Function:
	# test01
	#
	# Description:
	# Verify the ssh connectivity is not broken after creating a large
	# number of ssh sessions
	#
	#-----------------------------------------------------------------------
	test01()
	{
	TCID=ssh${IP_VER}-stress01
	TST_COUNT=1
	tst_resm TINFO "Verify the ssh connectivity over IPv${IP_VER} is not broken after creating ${CONNECTION_TOTAL} ssh sessions"

	# Script name at the remote host
	rmtscript="ssh-stress01-rmt"

	# Run the script at the remote host
	message_file=`mktemp -p $TMPDIR`
	not_run_rmtscript=true
	for rmtdir in ${LTPROOT}/testcases/bin ${PWD} ; do
	ret=`$LTP_RSH $RHOST 'test -x '${rmtdir}/${rmtscript}' ; echo $?'`
	if [ $ret -eq 0 ]; then
	not_run_rmtscript=false
	$LTP_RSH $RHOST "${rmtdir}/${rmtscript} $IP_VER $lhost_addr $rhost_config $CONNECTION_TOTAL" > $message_file
	break
	fi
	done
	if $not_run_rmtscript ; then
	tst_resm TBROK "Failed to run the test script at the remote host"
	rm -f $message_file
	exit 1
	fi

	if [ -s $message_file ]; then
	tst_resm TFAIL "`cat $message_file`"
	rm -f $message_file
	return 1
	else
	tst_resm TPASS "Test is finished successfully."
	rm -f $message_file
	return 0
	fi

	}


	#-----------------------------------------------------------------------
	#
	# Function:
	# test02
	#
	# Description:
	# Verify the ssh connectivity is not broken after logged in/out
	# by many clients asynchronously for a long time
	#
	#-----------------------------------------------------------------------
	test02()
	{
	TCID=ssh${IP_VER}-stress02
	TST_COUNT=2
	tst_resm TINFO "Verify the ssh connectivity over IPv${IP_VER} is not broken after logged in/out by many clients asynchronously in ${NS_DURATION}[sec]"
	tst_resm TINFO "The number of client is not over $CONNECTION_TOTAL"

	# Script name at the remote host
	rmtscript="ssh-stress02-rmt"

	# Run the script at the remote host
	message_file=`mktemp -p $TMPDIR`
	not_run_rmtscript=true
	for rmtdir in ${LTPROOT}/testcases/bin ${PWD} ; do
	ret=`$LTP_RSH $RHOST 'test -x '${rmtdir}/${rmtscript}' ; echo $?'`
	if [ $ret -eq 0 ]; then
	not_run_rmtscript=false
	$LTP_RSH $RHOST "${rmtdir}/${rmtscript} $IP_VER $lhost_addr $rhost_config $CONNECTION_TOTAL $NS_DURATION" > $message_file
	break
	fi
	done
	if $not_run_rmtscript ; then
	tst_resm TBROK "Failed to run the test script at the remote host"
	rm -f $message_file
	exit 1
	fi

	if [ -s $message_file ]; then
	tst_resm TFAIL "`cat $message_file`"
	rm -f $message_file
	return 1
	else
	tst_resm TPASS "Test is finished successfully."
	rm -f $message_file
	return 0
	fi
	}


	#-----------------------------------------------------------------------
	#
	# Function:
	# test03
	#
	# Description:
	# Verify the ssh connectivity is not broken after forwarding TCP traffic
	# for a long time
	#
	#-----------------------------------------------------------------------
	test03()
	{
	TCID=ssh${IP_VER}-stress03
	TST_COUNT=3
	tst_resm TINFO "Verify the ssh connectivity over IPv${IP_VER} is not broken after forwarding TCP traffic in ${NS_DURATION}[sec]"

	# Script name at the remote host
	rmtscript="ssh-stress03-rmt"

	# Run a TCP traffic server
	traffic_port=`find_portbundle tcp 1025 1` \|\| exit 1
	info_file=`mktemp -p $TMPDIR`
	ns-tcpserver -b -f $IP_VER -p $traffic_port -o $info_file
	if [ $? -ne 0 ]; then
	tst_resm TFAIL "Failed to run a tcp traffic server."
	rm -f $info_file
	exit 1
	fi

	while true ; do
	if [ -s $info_file ]; then
	break
	fi
	done

	server_pid=`grep PID: $info_file \| cut -f 2 -d ' '`
	rm -f $info_file

	# Run the script at the remote host
	message_file=`mktemp -p $TMPDIR`
	not_run_rmtscript=true
	for rmtdir in ${LTPROOT}/testcases/bin ${PWD} ; do
	ret=`$LTP_RSH $RHOST 'test -x '${rmtdir}/${rmtscript}' ; echo $?'`
	if [ $ret -eq 0 ]; then
	not_run_rmtscript=false
	$LTP_RSH $RHOST "${rmtdir}/${rmtscript} $LTPROOT $IP_VER $lhost_addr $rhost_config $traffic_port $NS_DURATION" > $message_file
	break
	fi
	done
	if $not_run_rmtscript ; then
	tst_resm TBROK "Failed to run the test script at the remote host"
	rm -f $message_file
	exit 1
	fi

	if [ -s $message_file ]; then
	tst_resm TFAIL "`cat $message_file`"
	rm -f $message_file
	return 1
	else
	tst_resm TPASS "Test is finished successfully."
	rm -f $message_file
	return 0
	fi
	}


	#-----------------------------------------------------------------------
	#
	# Main
	#
	# Exit Value:
	# The number of the failure
	#
	#-----------------------------------------------------------------------

	RC=0
	do_setup
	test01 \|\| RC=`expr $RC + 1`
	test02 \|\| RC=`expr $RC + 1`
	test03 \|\| RC=`expr $RC + 1`

	exit $RC