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#!/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 ##
## 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA ##
## ##
## ##
################################################################################
#
# File:
# route4-redirect
#
# Description:
# Verify the kernel is not crashed when the IPv4 route is modified by
# ICMP Redirects frequently
#
# Setup:
# See testcases/network/stress/README
#
# Author:
# Mitsuru Chinen <mitch@jp.ibm.com>
#
# History:
# Apr 07 2006 - Created (Mitsuru Chinen)
#
#-----------------------------------------------------------------------
# Uncomment line below for debug output.
#trace_logic=${trace_logic:-"set -x"}
$trace_logic
# The test case ID, the test case count and the total number of test case
TCID=route4-redirect01
TST_TOTAL=1
TST_COUNT=1
export TCID
export TST_COUNT
export TST_TOTAL
# Test description
tst_resm TINFO "Verify the kernel is not crashed when the IPv4 route is modified by ICMP Redirects frequently"
# Make sure the value of LTPROOT
LTPROOT=${LTPROOT:-`(cd ../../../.. ; pwd)`}
export LTPROOT
# 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="2" # gateway
# 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_cleanup
#
# DESCRIPTION:
# Recover the tested interfaces
#
#-----------------------------------------------------------------------
do_cleanup()
{
# Kill the redirector utility
$LTP_RSH $RHOST killall -SIGHUP ns-icmp_redirector >/dev/null 2>&1
# Initialize the interfaces
initialize_if lhost ${LINK_NUM}
initialize_if rhost ${LINK_NUM}
}
#-----------------------------------------------------------------------
#
# NAME:
# do_setup
#
# DESCRIPTION:
# Set the initial route and start icmp redirect on the remote host
#
# 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()
{
# Make sure to clean up
do_cleanup
# 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
# Remove the link-local address of the remote host
sleep 3
$LTP_RSH $RHOST "ip addr flush dev $rhost_ifname" > /dev/null
# 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
# Add route to the initial gateway
route add -net ${DST_NETWORK}.0 netmask 255.255.255.0 gw ${IPV4_NETWORK}.${RHOST_IPV4_HOST} dev $lhost_ifname
# Make sure the sysctl value is set for accepting the redirect
sysctl -w net.ipv4.conf.${lhost_ifname}.accept_redirects=1 >/dev/null
sysctl -w net.ipv4.conf.${lhost_ifname}.secure_redirects=0 >/dev/null
# Run the redirector utility at the remote host
ret=`$LTP_RSH $RHOST "${LTPROOT}/testcases/bin/ns-icmp_redirector -I $rhost_ifname -b ; "'echo $?'`
if [ $ret -ne 0 ]; then
tst_resm TBROK "Failed to run icmp redirector at the remote host"
exit $TST_TOTAL
fi
}
#-----------------------------------------------------------------------
#
# FUNCTION:
# test_body
#
# DESCRIPTION:
# main code of the test
#
# Arguments:
# None
#
#-----------------------------------------------------------------------
test_body()
{
# Loop for changing the route
cnt=0
while [ $cnt -lt $NS_TIMES ]; do
ns-udpsender -f 4 -D ${DST_NETWORK}.${DST_HOST} -p $DST_PORT -o -s 8
if [ $? -ne 0 ]; then
tst_resm TBROK "Failed to run udp packet sender"
return 1
fi
cnt=`expr $cnt + 1`
done
tst_resm TPASS "Test is finished correctly."
return 0
}
#-----------------------------------------------------------------------
#
# Main
#
# Exit Value:
# The number of the failure
#
#-----------------------------------------------------------------------
RC=0
do_setup
test_body || RC=`expr $RC + 1`
do_cleanup
exit $RC
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