fibs_test.sh revision 267186
1# 2# Copyright (c) 2014 Spectra Logic Corporation 3# All rights reserved. 4# 5# Redistribution and use in source and binary forms, with or without 6# modification, are permitted provided that the following conditions 7# are met: 8# 1. Redistributions of source code must retain the above copyright 9# notice, this list of conditions, and the following disclaimer, 10# without modification. 11# 2. Redistributions in binary form must reproduce at minimum a disclaimer 12# substantially similar to the "NO WARRANTY" disclaimer below 13# ("Disclaimer") and any redistribution must be conditioned upon 14# including a substantially similar Disclaimer requirement for further 15# binary redistribution. 16# 17# NO WARRANTY 18# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 19# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 20# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR 21# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 22# HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 23# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 24# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 25# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 26# STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING 27# IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 28# POSSIBILITY OF SUCH DAMAGES. 29# 30# Authors: Alan Somers (Spectra Logic Corporation) 31# 32# $FreeBSD: stable/10/tests/sys/netinet/fibs_test.sh 267186 2014-06-06 20:35:40Z asomers $ 33 34# All of the tests in this file requires the test-suite config variable "fibs" 35# to be defined to a space-delimited list of FIBs that may be used for testing. 36 37# arpresolve should check the interface fib for routes to a target when 38# creating an ARP table entry. This is a regression for kern/167947, where 39# arpresolve only checked the default route. 40# 41# Outline: 42# Create two tap(4) interfaces 43# Simulate a crossover cable between them by using net/socat 44# Use nping (from security/nmap) to send an ICMP echo request from one 45# interface to the other, spoofing the source IP. The source IP must be 46# spoofed, or else it will already have an entry in the arp table. 47# Check whether an arp entry exists for the spoofed IP 48atf_test_case arpresolve_checks_interface_fib cleanup 49arpresolve_checks_interface_fib_head() 50{ 51 atf_set "descr" "arpresolve should check the interface fib, not the default fib, for routes" 52 atf_set "require.user" "root" 53 atf_set "require.config" "fibs" 54 atf_set "require.progs" "socat nping" 55} 56arpresolve_checks_interface_fib_body() 57{ 58 # Configure the TAP interfaces to use a RFC5737 nonrouteable addresses 59 # and a non-default fib 60 ADDR0="192.0.2.2" 61 ADDR1="192.0.2.3" 62 SUBNET="192.0.2.0" 63 # Due to bug TBD (regressed by multiple_fibs_on_same_subnet) we need 64 # diffferent subnet masks, or FIB1 won't have a subnet route. 65 MASK0="24" 66 MASK1="25" 67 # Spoof a MAC that is reserved per RFC7042 68 SPOOF_ADDR="192.0.2.4" 69 SPOOF_MAC="00:00:5E:00:53:00" 70 71 # Check system configuration 72 if [ 0 != `sysctl -n net.add_addr_allfibs` ]; then 73 atf_skip "This test requires net.add_addr_allfibs=0" 74 fi 75 get_fibs 2 76 77 # Configure TAP interfaces 78 setup_tap "$FIB0" ${ADDR0} ${MASK0} 79 TAP0=$TAP 80 setup_tap "$FIB1" ${ADDR1} ${MASK1} 81 TAP1=$TAP 82 83 # Simulate a crossover cable 84 socat /dev/${TAP0} /dev/${TAP1} & 85 SOCAT_PID=$! 86 echo ${SOCAT_PID} >> "processes_to_kill" 87 88 # Send an ICMP echo request with a spoofed source IP 89 setfib 2 nping -c 1 -e ${TAP0} -S ${SPOOF_ADDR} \ 90 --source-mac ${SPOOF_MAC} --icmp --icmp-type "echo-request" \ 91 --icmp-code 0 --icmp-id 0xdead --icmp-seq 1 --data 0xbeef \ 92 ${ADDR1} 93 # For informational and debugging purposes only, look for the 94 # characteristic error message 95 dmesg | grep "llinfo.*${SPOOF_ADDR}" 96 # Check that the ARP entry exists 97 atf_check -o match:"${SPOOF_ADDR}.*expires" setfib 3 arp ${SPOOF_ADDR} 98} 99arpresolve_checks_interface_fib_cleanup() 100{ 101 for PID in `cat "processes_to_kill"`; do 102 kill $PID 103 done 104 cleanup_tap 105} 106 107 108# Regression test for kern/187549 109atf_test_case loopback_and_network_routes_on_nondefault_fib cleanup 110loopback_and_network_routes_on_nondefault_fib_head() 111{ 112 atf_set "descr" "When creating and deleting loopback routes, use the interface's fib" 113 atf_set "require.user" "root" 114 atf_set "require.config" "fibs" 115} 116 117loopback_and_network_routes_on_nondefault_fib_body() 118{ 119 atf_expect_fail "kern/187549 Host and network routes for a new interface appear in the wrong FIB" 120 # Configure the TAP interface to use an RFC5737 nonrouteable address 121 # and a non-default fib 122 ADDR="192.0.2.2" 123 SUBNET="192.0.2.0" 124 MASK="24" 125 126 # Check system configuration 127 if [ 0 != `sysctl -n net.add_addr_allfibs` ]; then 128 atf_skip "This test requires net.add_addr_allfibs=0" 129 fi 130 get_fibs 1 131 132 # Configure a TAP interface 133 setup_tap ${FIB0} ${ADDR} ${MASK} 134 135 # Check whether the host route exists in only the correct FIB 136 setfib ${FIB0} netstat -rn -f inet | grep -q "^${ADDR}.*UHS.*lo0" 137 if [ 0 -ne $? ]; then 138 setfib ${FIB0} netstat -rn -f inet 139 atf_fail "Host route did not appear in the correct FIB" 140 fi 141 setfib 0 netstat -rn -f inet | grep -q "^${ADDR}.*UHS.*lo0" 142 if [ 0 -eq $? ]; then 143 setfib 0 netstat -rn -f inet 144 atf_fail "Host route appeared in the wrong FIB" 145 fi 146 147 # Check whether the network route exists in only the correct FIB 148 setfib ${FIB0} netstat -rn -f inet | \ 149 grep -q "^${SUBNET}/${MASK}.*${TAPD}" 150 if [ 0 -ne $? ]; then 151 setfib ${FIB0} netstat -rn -f inet 152 atf_fail "Network route did not appear in the correct FIB" 153 fi 154 setfib 0 netstat -rn -f inet | \ 155 grep -q "^${SUBNET}/${MASK}.*${TAPD}" 156 if [ 0 -eq $? ]; then 157 setfib ${FIB0} netstat -rn -f inet 158 atf_fail "Network route appeared in the wrong FIB" 159 fi 160} 161 162loopback_and_network_routes_on_nondefault_fib_cleanup() 163{ 164 cleanup_tap 165} 166 167 168# Regression test for kern/187552 169atf_test_case default_route_with_multiple_fibs_on_same_subnet cleanup 170default_route_with_multiple_fibs_on_same_subnet_head() 171{ 172 atf_set "descr" "Multiple interfaces on the same subnet but with different fibs can both have default routes" 173 atf_set "require.user" "root" 174 atf_set "require.config" "fibs" 175} 176 177default_route_with_multiple_fibs_on_same_subnet_body() 178{ 179 # Configure the TAP interfaces to use a RFC5737 nonrouteable addresses 180 # and a non-default fib 181 ADDR0="192.0.2.2" 182 ADDR1="192.0.2.3" 183 GATEWAY="192.0.2.1" 184 SUBNET="192.0.2.0" 185 MASK="24" 186 187 # Check system configuration 188 if [ 0 != `sysctl -n net.add_addr_allfibs` ]; then 189 atf_skip "This test requires net.add_addr_allfibs=0" 190 fi 191 get_fibs 2 192 193 # Configure TAP interfaces 194 setup_tap "$FIB0" ${ADDR0} ${MASK} 195 TAP0=$TAP 196 setup_tap "$FIB1" ${ADDR1} ${MASK} 197 TAP1=$TAP 198 199 # Attempt to add default routes 200 setfib ${FIB0} route add default ${GATEWAY} 201 setfib ${FIB1} route add default ${GATEWAY} 202 203 # Verify that the default route exists for both fibs, with their 204 # respective interfaces. 205 atf_check -o match:"^default.*${TAP0}$" \ 206 setfib ${FIB0} netstat -rn -f inet 207 atf_check -o match:"^default.*${TAP1}$" \ 208 setfib ${FIB1} netstat -rn -f inet 209} 210 211default_route_with_multiple_fibs_on_same_subnet_cleanup() 212{ 213 cleanup_tap 214} 215 216 217# Regression test for kern/187550 218atf_test_case subnet_route_with_multiple_fibs_on_same_subnet cleanup 219subnet_route_with_multiple_fibs_on_same_subnet_head() 220{ 221 atf_set "descr" "Multiple FIBs can have subnet routes for the same subnet" 222 atf_set "require.user" "root" 223 atf_set "require.config" "fibs" 224} 225 226subnet_route_with_multiple_fibs_on_same_subnet_body() 227{ 228 # Configure the TAP interfaces to use a RFC5737 nonrouteable addresses 229 # and a non-default fib 230 ADDR0="192.0.2.2" 231 ADDR1="192.0.2.3" 232 SUBNET="192.0.2.0" 233 MASK="24" 234 235 # Check system configuration 236 if [ 0 != `sysctl -n net.add_addr_allfibs` ]; then 237 atf_skip "This test requires net.add_addr_allfibs=0" 238 fi 239 get_fibs 2 240 241 # Configure TAP interfaces 242 setup_tap "$FIB0" ${ADDR0} ${MASK} 243 setup_tap "$FIB1" ${ADDR1} ${MASK} 244 245 # Check that a subnet route exists on both fibs 246 atf_check -o ignore setfib "$FIB0" route get $ADDR1 247 atf_check -o ignore setfib "$FIB1" route get $ADDR0 248} 249 250subnet_route_with_multiple_fibs_on_same_subnet_cleanup() 251{ 252 cleanup_tap 253} 254 255# Test that source address selection works correctly for UDP packets with 256# SO_DONTROUTE set that are sent on non-default FIBs. 257# This bug was discovered with "setfib 1 netperf -t UDP_STREAM -H some_host" 258# Regression test for kern/187553 259# 260# The root cause was that ifa_ifwithnet() did not have a fib argument. It 261# would return an address from an interface on any FIB that had a subnet route 262# for the destination. If more than one were available, it would choose the 263# most specific. This is most easily tested by creating a FIB without a 264# default route, then trying to send a UDP packet with SO_DONTROUTE set to an 265# address which is not routable on that FIB. Absent the fix for this bug, 266# in_pcbladdr would choose an interface on any FIB with a default route. With 267# the fix, you will get EUNREACH or ENETUNREACH. 268atf_test_case udp_dontroute cleanup 269udp_dontroute_head() 270{ 271 atf_set "descr" "Source address selection for UDP packets with SO_DONTROUTE on non-default FIBs works" 272 atf_set "require.user" "root" 273 atf_set "require.config" "fibs" 274} 275 276udp_dontroute_body() 277{ 278 atf_expect_fail "kern/187553 Source address selection for UDP packets with SO_DONTROUTE uses the default FIB" 279 # Configure the TAP interface to use an RFC5737 nonrouteable address 280 # and a non-default fib 281 ADDR0="192.0.2.2" 282 ADDR1="192.0.2.3" 283 SUBNET="192.0.2.0" 284 MASK="24" 285 # Use a different IP on the same subnet as the target 286 TARGET="192.0.2.100" 287 SRCDIR=`atf_get_srcdir` 288 289 # Check system configuration 290 if [ 0 != `sysctl -n net.add_addr_allfibs` ]; then 291 atf_skip "This test requires net.add_addr_allfibs=0" 292 fi 293 get_fibs 2 294 295 # Configure the TAP interfaces 296 setup_tap ${FIB0} ${ADDR0} ${MASK} 297 TARGET_TAP=${TAP} 298 setup_tap ${FIB1} ${ADDR1} ${MASK} 299 300 # Send a UDP packet with SO_DONTROUTE. In the failure case, it will 301 # return ENETUNREACH, or send the packet to the wrong tap 302 atf_check -o ignore setfib ${FIB0} \ 303 ${SRCDIR}/udp_dontroute ${TARGET} /dev/${TARGET_TAP} 304 cleanup_tap 305 306 # Repeat, but this time target the other tap 307 setup_tap ${FIB0} ${ADDR0} ${MASK} 308 setup_tap ${FIB1} ${ADDR1} ${MASK} 309 TARGET_TAP=${TAP} 310 311 atf_check -o ignore setfib ${FIB1} \ 312 ${SRCDIR}/udp_dontroute ${TARGET} /dev/${TARGET_TAP} 313} 314 315udp_dontroute_cleanup() 316{ 317 cleanup_tap 318} 319 320 321atf_init_test_cases() 322{ 323 atf_add_test_case arpresolve_checks_interface_fib 324 atf_add_test_case loopback_and_network_routes_on_nondefault_fib 325 atf_add_test_case default_route_with_multiple_fibs_on_same_subnet 326 atf_add_test_case subnet_route_with_multiple_fibs_on_same_subnet 327 atf_add_test_case udp_dontroute 328} 329 330# Looks up one or more fibs from the configuration data and validates them. 331# Returns the results in the env varilables FIB0, FIB1, etc. 332 333# parameter numfibs The number of fibs to lookup 334get_fibs() 335{ 336 NUMFIBS=$1 337 net_fibs=`sysctl -n net.fibs` 338 i=0 339 while [ $i -lt "$NUMFIBS" ]; do 340 fib=`atf_config_get "fibs" | \ 341 awk -v i=$(( i + 1 )) '{print $i}'` 342 echo "fib is ${fib}" 343 eval FIB${i}=${fib} 344 if [ "$fib" -ge "$net_fibs" ]; then 345 atf_skip "The ${i}th configured fib is ${fib}, which is not less than net.fibs, which is ${net_fibs}" 346 fi 347 i=$(( $i + 1 )) 348 done 349} 350 351# Creates a new tap(4) interface, registers it for cleanup, and returns the 352# name via the environment variable TAP 353get_tap() 354{ 355 local TAPN=0 356 while ! ifconfig tap${TAPN} create > /dev/null 2>&1; do 357 if [ "$TAPN" -ge 8 ]; then 358 atf_skip "Could not create a tap(4) interface" 359 else 360 TAPN=$(($TAPN + 1)) 361 fi 362 done 363 local TAPD=tap${TAPN} 364 # Record the TAP device so we can clean it up later 365 echo ${TAPD} >> "tap_devices_to_cleanup" 366 TAP=${TAPD} 367} 368 369# Create a tap(4) interface, configure it, and register it for cleanup. 370# parameters: 371# fib 372# IP address 373# Netmask in number of bits (eg 24 or 8) 374# Return: the tap interface name as the env variable TAP 375setup_tap() 376{ 377 local FIB=$1 378 local ADDR=$2 379 local MASK=$3 380 get_tap 381 echo setfib ${FIB} ifconfig $TAP ${ADDR}/${MASK} fib $FIB 382 setfib ${FIB} ifconfig $TAP ${ADDR}/${MASK} fib $FIB 383} 384 385cleanup_tap() 386{ 387 for TAPD in `cat "tap_devices_to_cleanup"`; do 388 ifconfig ${TAPD} destroy 389 done 390 rm "tap_devices_to_cleanup" 391} 392