#!/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:
#   mcast4-grpope01
#
# Description:
#   Verify that the kernel is not crashed when joining lots of IPv4 multicast
#   groups on a single socket
#
# Setup:
#   See ltp-yyyymmdd/testcases/network/stress/README
#
# Author:
#   Mitsuru Chinen <mitch@jp.ibm.com>
#
# History:
#	May 1 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=mcast4-grpope01
TST_TOTAL=1
TST_COUNT=1
export TCID
export TST_COUNT
export TST_TOTAL

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

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

# Number of the group
MCASTNUM_HEAVY=${MCASTNUM_HEAVY:-40000}

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

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

# Netmask of the IPv4 network
NETWORK_MASK=24

# Host portion of the IPv4 address
LHOST_HOST_PART=${LHOST_IPV4_HOST:-"2"}     # local host
RHOST_HOST_PART=${RHOST_IPV4_HOST:-"1"}     # remote host

# Prefix of the Multicast Address
MCAST_ADDR_PREFIX=224.10


#-----------------------------------------------------------------------
#
# Function: do_cleanup
#
# Description:
#   Recover the system configuration
#
#-----------------------------------------------------------------------
do_cleanup()
{
    # Make sure to kill the multicast receiver and sender
    killall -SIGHUP ns-mcast_join >/dev/null 2>&1
    $LTP_RSH $RHOST killall -SIGHUP ns-igmp_querier >/dev/null 2>&1

    # Clean up each interface
    initialize_if lhost ${LINK_NUM}
    initialize_if rhost ${LINK_NUM}
}


#-----------------------------------------------------------------------
#
# Function: do_setup
#
# Description:
#   Configure the ssystem for the test
#
#-----------------------------------------------------------------------
do_setup()
{
    # Initialize the system configuration
    do_cleanup

    # Call do_cleanup function before exit
    trap do_cleanup 0

    # name of interface of the local/remote 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

    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

    # Set IPv4 addresses to the interfaces
    set_ipv4addr lhost $LINK_NUM $NETWORK_PART $LHOST_HOST_PART
    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 $NETWORK_PART $RHOST_HOST_PART
    if [ $? -ne 0 ]; then
	tst_resm TBROK "Failed to add any IP address at the remote host"
	exit 1
    fi

    # IPv4 address of the local/remote host
    lhost_addr="${NETWORK_PART}.${LHOST_HOST_PART}"
    rhost_addr="${NETWORK_PART}.${RHOST_HOST_PART}"

    # Make sure the connectvity
    check_icmpv4_connectivity $lhost_ifname $rhost_addr
    if [ $? -ne 0 ]; then
	tst_resm TBROK "There is no IPv4 connectivity."
	exit 1
    fi

    # Make sure the sysctl values
    sysctl -w net.ipv4.igmp_max_memberships=$MCASTNUM_HEAVY >/dev/null
    if [ $? -ne 0 ]; then
	tst_resm TBROK "Failed to set the sysctl value regarding multicast"
	exit $TST_TOTAL
    fi

    sysctl -w net.ipv4.igmp_max_msf=10 >/dev/null
    sysctl -w net.ipv4.conf.${lhost_ifname}.force_igmp_version=0 >/dev/null
    sysctl -w net.ipv4.conf.all.force_igmp_version=0 >/dev/null
}


#-----------------------------------------------------------------------
#
# Main
#
#

# Test description
tst_resm TINFO "Verify that the kernel is not crashed when joining $MCASTNUM_HEAVY IPv4 multicast groups on a single socket"

do_setup

# Run a multicast join tool
tmpfile=$TMPDIR/ns-mcast_join.$$
ns-mcast_join -f 4 -I $lhost_ifname -n $MCASTNUM_HEAVY -p $MCAST_ADDR_PREFIX > $tmpfile
if [ $? -ne 0 ]; then
    tst_resm TBROK "Failed to start multicast joining tool Please check the environment"
    rm -f $tmpfile
    exit 1
fi
msg=`cat $tmpfile | grep groups`
tst_resm TINFO "Joined $msg"
rm -f $tmpfile

# Send IGMP General Query from the remote host
ret=`$LTP_RSH $RHOST ${LTPROOT}/testcases/bin/ns-igmp_querier -I $rhost_ifname -o -r 1' ; echo $?'`
if [ $ret -ne 0 ]; then
    tst_resm TBROK "Failed to start IGMP querier"
    exit 1
fi

#-----------------------------------------------------------------------
#
# Clean up
#

killall -SIGHUP ns-mcast_join >/dev/null 2>&1
while true ; do
    ps auxw | grep -v grep | grep ns-mcast_join > /dev/null
    if [ $? -ne 0 ] ; then
  	break
    fi
done

tst_resm TPASS "Test is finished successfully."

exit 0