#!/bin/sh
################################################################################
## ##
## Copyright (c) International Business Machines Corp., 2006 ##
## ##
## 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 ##
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## (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. ##
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## 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA ##
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## ##
################################################################################
#
# File:
# route4-change-gw
#
# Description:
# Verify the kernel is not crashed when the gateway of an IPv4 route is
# changed frequently
# test01 - by route command
# test02 - by ip command
#
# Setup:
# See ltp-yyyymmdd/testcases/network/stress/README
#
# Author:
# Mitsuru Chinen <mitch@jp.ibm.com>
#
# History:
# Mar 16 2006 - 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=2
export TST_TOTAL
# Default of the test case ID and the test case count
TCID=route4-change-gw
TST_COUNT=0
export TCID
export TST_COUNT
# Check the environmanet variable
. check_envval || exit $TST_TOTAL
# The number of times where route is changed
NS_TIMES=${NS_TIMES:-10000}
# 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"}
# Netmask of for the tested network
IPV4_NETMASK_NUM=24
# Broadcast address of the tested network
IPV4_BROADCAST=${IPV4_NETWORK}.255
# Host portion of the IPv4 address
LHOST_IPV4_HOST=${LHOST_IPV4_HOST:-"1"} # src
RHOST_IPV4_HOST_TOP="10" # gateway
RHOST_IPV4_HOST_LAST=19
# The destination network
DST_NETWORK="10.10.0" # destination network would be 10.10.0.0/24
DST_HOST="5"
DST_PORT="7"
#-----------------------------------------------------------------------
#
# NAME:
# do_setup
#
# DESCRIPTION:
# Make a IPv4 connectivity
#
# SET VALUES:
# rhost_ipv4addr - IPv4 Address of the remote host
# lhost_ifname - Interface name of the local host
# rhost_ifname - Interface name of the remote host
#
#-----------------------------------------------------------------------
do_setup()
{
TCID=route4-change-gw
TST_COUNT=0
# Get the Interface name of local host
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
# Get the Interface name of remote host
rhost_ifname=`get_ifname rhost ${LINK_NUM}`
if [ $? -ne 0 ]; then
tst_resm TBROK "Failed to get the interface name at the remote host"
exit $TST_TOTAL
fi
# Initialize the interfaces of the remote host
initialize_if rhost ${LINK_NUM}
# Set IPv4 address to the interface of the remote host
rhost_part=$RHOST_IPV4_HOST_TOP
while [ $rhost_part -le $RHOST_IPV4_HOST_LAST ]; do
ret=`$LTP_RSH $RHOST '( PATH=/sbin:/usr/sbin:$PATH ; ip addr add '${IPV4_NETWORK}.${rhost_part}/${IPV4_NETMASK_NUM}' broadcast '${IPV4_NETWORK}'.255 dev '$rhost_ifname' ) > /dev/null ; echo $?'`
if [ $ret -ne 0 ]; then
tst_resm TBROK "Failed to assign IP address to the interface at the remote host"
exit $TST_TOTAL
fi
rhost_part=`expr $rhost_part + 1`
done
}
#-----------------------------------------------------------------------
#
# NAME:
# do_cleanup
#
# DESCRIPTION:
# Recover the tested interfaces
#
#-----------------------------------------------------------------------
do_cleanup()
{
killall -SIGHUP ns-udpsender >/dev/null 2>&1
# Initialize the interfaces
initialize_if lhost ${LINK_NUM}
initialize_if rhost ${LINK_NUM}
}
#-----------------------------------------------------------------------
#
# FUNCTION:
# test_body
#
# DESCRIPTION:
# main code of the test
#
# Arguments:
# $1: define the test type
# 1 - route command case
# 2 - ip command case
#
#-----------------------------------------------------------------------
test_body()
{
test_type=$1
TCID=route4-change-gw0${test_type}
TST_COUNT=$test_type
case $test_type in
1)
test_command="route"
;;
2)
test_command="ip"
;;
*)
tst_resm TBROK "unspecified case"
return 1
;;
esac
tst_resm TINFO "Verify the kernel is not crashed when the gateway of an IPv4 route is changed frequently by $test_command command in $NS_TIMES times"
# Initialize the interface of the local host
initialize_if lhost ${LINK_NUM}
# Assign IPv4 address to the interface of the local host
set_ipv4addr lhost ${LINK_NUM} ${IPV4_NETWORK} ${LHOST_IPV4_HOST}
if [ $? -ne 0 ]; then
tst_resm TBROK "Failed to assign an IPv4 address at the local host"
return 1
fi
# Check the connectivity to the gateway
rhost_part=$RHOST_IPV4_HOST_TOP
check_icmpv4_connectivity $lhost_ifname ${IPV4_NETWORK}.${rhost_part}
if [ $? -ne 0 ]; then
tst_resm TBROK "Test Link $LINK_NUM is somthing wrong."
return 1
fi
# Set the variables regarding the destination host
dst_addr=${DST_NETWORK}.${DST_HOST}
dst_network=${DST_NETWORK}.0
# Set the first route
case $test_type in
1)
route add -net $dst_network netmask 255.255.255.0 gw ${IPV4_NETWORK}.${rhost_part} dev $lhost_ifname
;;
2)
ip route add ${dst_network}/24 via ${IPV4_NETWORK}.${rhost_part} dev $lhost_ifname
;;
esac
# Load the route with UDP traffic
ns-udpsender -f 4 -D $dst_addr -p $DST_PORT -b -s 1472
if [ $? -ne 0 ]; then
tst_resm TFAIL "Failed to run a UDP datagram sender"
return 1
fi
# Loop for changing the route
cnt=0
while [ $cnt -lt $NS_TIMES ]; do
pre_rhost_part=$rhost_part
rhost_part=`expr $rhost_part + 1`
if [ $rhost_part -gt $RHOST_IPV4_HOST_LAST ]; then
rhost_part=$RHOST_IPV4_HOST_TOP
fi
case $test_type in
1)
route add -net $dst_network netmask 255.255.255.0 gw ${IPV4_NETWORK}.${rhost_part} dev $lhost_ifname
route del -net $dst_network netmask 255.255.255.0 gw ${IPV4_NETWORK}.${pre_rhost_part} dev $lhost_ifname
;;
2)
ip route change ${dst_network}/24 via ${IPV4_NETWORK}.${rhost_part} dev $lhost_ifname
;;
esac
if [ $? -ne 0 ]; then
tst_resm TFAIL "Failed to change the gateway to ${IPV4_NETWORK}.${rhost_part}"
return 1
fi
# Rerun if udp datagram sender is dead
ps auxw | fgrep -v grep | grep ns-udpsender > /dev/null
if [ $? -ne 0 ]; then
ns-udpsender -f 4 -D $dst_addr -p $DST_PORT -b -s 1472
if [ $? -ne 0 ]; then
tst_resm TFAIL "Failed to run a UDP datagram sender"
return 1
fi
fi
cnt=`expr $cnt + 1`
done
# Kill the udp datagram sender
killall -SIGHUP ns-udpsender >/dev/null 2>&1
tst_resm TPASS "Test is finished correctly."
return 0
}
#-----------------------------------------------------------------------
#
# Main
#
# Exit Value:
# The number of the failure
#
#-----------------------------------------------------------------------
RC=0
do_setup
test_body 1 || RC=`expr $RC + 1` # Case of route command
test_body 2 || RC=`expr $RC + 1` # Case of ip command
do_cleanup
exit $RC