1 #!/bin/sh 2 3 ################################################################################ 4 ## ## 5 ## Copyright (c) International Business Machines Corp., 2006 ## 6 ## ## 7 ## This program is free software; you can redistribute it and#or modify ## 8 ## it under the terms of the GNU General Public License as published by ## 9 ## the Free Software Foundation; either version 2 of the License, or ## 10 ## (at your option) any later version. ## 11 ## ## 12 ## This program is distributed in the hope that it will be useful, but ## 13 ## WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY ## 14 ## or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License ## 15 ## for more details. ## 16 ## ## 17 ## You should have received a copy of the GNU General Public License ## 18 ## along with this program; if not, write to the Free Software ## 19 ## Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA ## 20 ## ## 21 ## ## 22 ################################################################################ 23 # 24 # File: 25 # route4-change-if 26 # 27 # Description: 28 # Verify the kernel is not crashed when the interface of an IPv4 route is 29 # changed frequently 30 # test01 - by route command 31 # test02 - by ip command 32 # 33 # Setup: 34 # See ltp-yyyymmdd/testcases/network/stress/README 35 # 36 # Author: 37 # Mitsuru Chinen <mitch (at] jp.ibm.com> 38 # 39 # History: 40 # Mar 17 2006 - Created (Mitsuru Chinen) 41 # 42 #----------------------------------------------------------------------- 43 # Uncomment line below for debug output. 44 #trace_logic=${trace_logic:-"set -x"} 45 $trace_logic 46 47 # Make sure the value of LTPROOT 48 LTPROOT=${LTPROOT:-`(cd ../../../../ ; pwd)`} 49 export LTPROOT 50 51 # Total number of the test case 52 TST_TOTAL=2 53 export TST_TOTAL 54 55 # Default of the test case ID and the test case count 56 TCID=route4-change-if 57 TST_COUNT=0 58 export TCID 59 export TST_COUNT 60 61 # Check the environmanet variable 62 . check_envval || exit $TST_TOTAL 63 64 # The number of times where route is changed 65 NS_TIMES=${NS_TIMES:-10000} 66 67 # The first 2 ocnted of the Network portion of the gateway address 68 IPV4_NETWORK_PRE=${IPV4_NETWORK_PRE:-"10.0"} 69 70 # Netmask of for the gateway 71 IPV4_NETMASK_NUM=24 72 73 # Host portion of the IPv4 address 74 LHOST_IPV4_HOST=${LHOST_IPV4_HOST:-"2"} # src 75 RHOST_IPV4_HOST=${RHOST_IPV4_HOST:-"1"} # gateway 76 77 # The destination network 78 DST_NETWORK="10.10.0" # destination network would be 10.10.0.0/24 79 DST_HOST="5" 80 DST_PORT="7" 81 82 83 #----------------------------------------------------------------------- 84 # 85 # NAME: 86 # do_setup 87 # 88 # DESCRIPTION: 89 # Make a IPv4 connectivity 90 # 91 # SET VALUES: 92 # rhost_ipv4addr - IPv4 Address of the remote host 93 # lhost_ifname - Interface name of the local host 94 # rhost_ifname - Interface name of the remote host 95 # 96 #----------------------------------------------------------------------- 97 do_setup() 98 { 99 TCID=route4-change-if 100 TST_COUNT=0 101 102 # Get the number of the test links 103 link_total=`echo $LHOST_HWADDRS | wc -w` 104 rhost_link_total=`echo $RHOST_HWADDRS | wc -w` 105 if [ $link_total -ne $rhost_link_total ]; then 106 tst_resm TBROK "The number of element in LHOST_HWADDRS differs from RHOST_HWADDRS" 107 exit $TST_TOTAL 108 fi 109 if [ $link_total -lt 2 ]; then 110 tst_resm TBROK "This test case requires plural Test Links" 111 exit $TST_TOTAL 112 fi 113 114 lhost_ifname_array="" 115 rhost_ifname_array="" 116 link_num=0 117 while [ $link_num -lt $link_total ]; do 118 # Get the Interface names of the local host 119 lhost_ifname=`get_ifname lhost ${link_num}` 120 if [ $? -ne 0 ]; then 121 tst_resm TBROK "Failed to get the interface name at the local host" 122 exit $TST_TOTAL 123 fi 124 lhost_ifname_array="$lhost_ifname_array $lhost_ifname" 125 126 # Get the Interface names of the remote host 127 rhost_ifname=`get_ifname rhost ${link_num}` 128 if [ $? -ne 0 ]; then 129 tst_resm TBROK "Failed to get the interface name at the remote host" 130 exit $TST_TOTAL 131 fi 132 rhost_ifname_array="$rhost_ifname_array $rhost_ifname" 133 134 # Initialize the interfaces of the remote host 135 initialize_if rhost ${link_num} 136 137 # Set IPv4 address to the interface of the remote host 138 set_ipv4addr rhost ${link_num} "${IPV4_NETWORK_PRE}.${link_num}" ${RHOST_IPV4_HOST} 139 if [ $? -ne 0 ]; then 140 tst_resm TBROK "Failed to assign IP address to the interface $rhost_ifname at the remote host" 141 exit $TST_TOTAL 142 fi 143 144 link_num=`expr $link_num + 1` 145 done 146 } 147 148 149 150 151 #----------------------------------------------------------------------- 152 # 153 # NAME: 154 # do_cleanup 155 # 156 # DESCRIPTION: 157 # Recover the tested interfaces 158 # 159 #----------------------------------------------------------------------- 160 do_cleanup() 161 { 162 # Make sure to kill the udp datagram sender 163 killall -SIGHUP ns-udpsender >/dev/null 2>&1 164 165 # Initialize the interfaces 166 link_num=0 167 while [ $link_num -lt $link_total ]; do 168 initialize_if lhost ${link_num} 169 initialize_if rhost ${link_num} 170 link_num=`expr $link_num + 1` 171 done 172 } 173 174 175 #----------------------------------------------------------------------- 176 # 177 # FUNCTION: 178 # test_body 179 # 180 # DESCRIPTION: 181 # main code of the test 182 # 183 # Arguments: 184 # $1: define the test type 185 # 1 - route command case 186 # 2 - ip command case 187 # 188 #----------------------------------------------------------------------- 189 test_body() 190 { 191 test_type=$1 192 193 TCID=route4-change-if0${test_type} 194 TST_COUNT=$test_type 195 196 case $test_type in 197 1) 198 test_command="route" 199 ;; 200 2) 201 test_command="ip" 202 ;; 203 *) 204 tst_resm TBROK "unspecified case" 205 return 1 206 ;; 207 esac 208 209 tst_resm TINFO "Verify the kernel is not crashed when the interface of an IPv4 route is changed frequently by $test_command command in $NS_TIMES times" 210 211 link_num=0 212 while [ $link_num -lt $link_total ]; do 213 # Initialize the interface of the local host 214 initialize_if lhost ${link_num} 215 216 # Assign IPv4 address to the interface of the local host 217 set_ipv4addr lhost ${link_num} "${IPV4_NETWORK_PRE}.${link_num}" ${LHOST_IPV4_HOST} 218 if [ $? -ne 0 ]; then 219 tst_resm TBROK "Failed to assign an IPv4 address at the local host" 220 return 1 221 fi 222 223 # Check the connectivity to the gateway 224 field=`expr $link_num + 1` 225 lhost_ifname=`echo $lhost_ifname_array | cut -d ' ' -f $field` 226 check_icmpv4_connectivity $lhost_ifname "${IPV4_NETWORK_PRE}.${link_num}.${LHOST_IPV4_HOST}" 227 if [ $? -ne 0 ]; then 228 tst_resm TBROK "Test Link $link_num is somthing wrong." 229 return 1 230 fi 231 link_num=`expr $link_num + 1` 232 done 233 234 # Set the variables regarding the destination host 235 dst_addr=${DST_NETWORK}.${DST_HOST} 236 dst_network=${DST_NETWORK}.0 237 238 # Set the first route 239 link_num=0 240 field=`expr $link_num + 1` 241 lhost_ifname=`echo $lhost_ifname_array | cut -d ' ' -f $field` 242 gateway="${IPV4_NETWORK_PRE}.${link_num}.${RHOST_IPV4_HOST}" 243 case $test_type in 244 1) 245 route add -net $dst_network netmask 255.255.255.0 gw $gateway dev $lhost_ifname 246 ;; 247 2) 248 ip route add ${dst_network}/24 via $gateway dev $lhost_ifname 249 ;; 250 esac 251 252 # Load the route with UDP traffic 253 ns-udpsender -f 4 -D $dst_addr -p $DST_PORT -b -s 1472 254 if [ $? -ne 0 ]; then 255 tst_resm TFAIL "Failed to run a UDP datagram sender" 256 return 1 257 fi 258 259 # Loop for changing the route 260 cnt=0 261 while [ $cnt -lt $NS_TIMES ]; do 262 link_num=`expr $link_num + 1` 263 if [ $link_num -ge $link_total ]; then 264 link_num=0 265 fi 266 267 pre_lhost_ifname=$lhost_ifname 268 pre_gateway=$gateway 269 270 field=`expr $link_num + 1` 271 lhost_ifname=`echo $lhost_ifname_array | cut -d ' ' -f $field` 272 gateway="${IPV4_NETWORK_PRE}.${link_num}.${RHOST_IPV4_HOST}" 273 274 case $test_type in 275 1) 276 route add -net $dst_network netmask 255.255.255.0 gw $gateway dev $lhost_ifname 277 route del -net $dst_network netmask 255.255.255.0 gw $pre_gateway dev $pre_lhost_ifname 278 ;; 279 2) 280 ip route change ${dst_network}/24 via $gateway dev $lhost_ifname 281 ;; 282 esac 283 if [ $? -ne 0 ]; then 284 tst_resm TFAIL "Failed to change the gateway to $gateway" 285 return 1 286 fi 287 288 # Rerun if udp datagram sender is dead 289 ps auxw | fgrep -v grep | grep ns-udpsender > /dev/null 290 if [ $? -ne 0 ]; then 291 ns-udpsender -f 4 -D $dst_addr -p $DST_PORT -b -s 1472 292 if [ $? -ne 0 ]; then 293 tst_resm TFAIL "Failed to run a UDP datagram sender" 294 return 1 295 fi 296 fi 297 298 cnt=`expr $cnt + 1` 299 done 300 301 # Kill the udp datagram sender 302 killall -SIGHUP ns-udpsender 303 304 tst_resm TPASS "Test is finished correctly." 305 return 0 306 } 307 308 309 #----------------------------------------------------------------------- 310 # 311 # Main 312 # 313 # Exit Value: 314 # The number of the failure 315 # 316 #----------------------------------------------------------------------- 317 318 RC=0 319 do_setup 320 test_body 1 || RC=`expr $RC + 1` # Case of route command 321 test_body 2 || RC=`expr $RC + 1` # Case of ip command 322 do_cleanup 323 324 exit $RC 325
