2 # SPDX-License-Identifier: GPL-2.0
4 # Run traceroute/traceroute6 tests
10 ################################################################################
18 if [ ${rc} -eq ${expected} ]; then
19 printf "TEST: %-60s [ OK ]\n" "${msg}"
20 nsuccess=$((nsuccess+1))
24 printf "TEST: %-60s [FAIL]\n" "${msg}"
25 if [ "${PAUSE_ON_FAIL}" = "yes" ]; then
27 echo "hit enter to continue, 'q' to quit"
29 [ "$a" = "q" ] && exit 1
45 if [ "$VERBOSE" = "1" ]; then
46 printf " COMMAND: $cmd\n"
49 out=$(eval ip netns exec ${ns} ${cmd} 2>&1)
51 if [ "$VERBOSE" = "1" -a -n "$out" ]; then
55 [ "$VERBOSE" = "1" ] && echo
60 ################################################################################
61 # create namespaces and interconnects
69 [ -z "${addr}" ] && addr="-"
70 [ -z "${addr6}" ] && addr6="-"
74 ip netns exec ${ns} ip link set lo up
75 if [ "${addr}" != "-" ]; then
76 ip netns exec ${ns} ip addr add dev lo ${addr}
78 if [ "${addr6}" != "-" ]; then
79 ip netns exec ${ns} ip -6 addr add dev lo ${addr6}
82 ip netns exec ${ns} ip ro add unreachable default metric 8192
83 ip netns exec ${ns} ip -6 ro add unreachable default metric 8192
85 ip netns exec ${ns} sysctl -qw net.ipv4.ip_forward=1
86 ip netns exec ${ns} sysctl -qw net.ipv6.conf.all.keep_addr_on_down=1
87 ip netns exec ${ns} sysctl -qw net.ipv6.conf.all.forwarding=1
88 ip netns exec ${ns} sysctl -qw net.ipv6.conf.default.forwarding=1
89 ip netns exec ${ns} sysctl -qw net.ipv6.conf.default.accept_dad=0
92 # create veth pair to connect namespaces and apply addresses.
104 ip netns exec ${ns1} ip li add ${ns1_dev} type veth peer name tmp
105 ip netns exec ${ns1} ip li set ${ns1_dev} up
106 ip netns exec ${ns1} ip li set tmp netns ${ns2} name ${ns2_dev}
107 ip netns exec ${ns2} ip li set ${ns2_dev} up
109 if [ "${ns1_addr}" != "-" ]; then
110 ip netns exec ${ns1} ip addr add dev ${ns1_dev} ${ns1_addr}
113 if [ "${ns2_addr}" != "-" ]; then
114 ip netns exec ${ns2} ip addr add dev ${ns2_dev} ${ns2_addr}
117 if [ "${ns1_addr6}" != "-" ]; then
118 ip netns exec ${ns1} ip addr add dev ${ns1_dev} ${ns1_addr6}
121 if [ "${ns2_addr6}" != "-" ]; then
122 ip netns exec ${ns2} ip addr add dev ${ns2_dev} ${ns2_addr6}
126 ################################################################################
129 # Verify that in this scenario
131 # ------------------------ N2
133 # ------ ------ N3 ----
134 # | R1 | | R2 |------|H2|
137 # ------------------------ N1
143 # where H1's default route goes through R1 and R1's default route goes
144 # through R2 over N2, traceroute6 from H1 to H2 reports R2's address
147 # Addresses are assigned as follows:
153 # R1's host part of address: 1
154 # R2's host part of address: 2
155 # H1's host part of address: 3
156 # H2's host part of address: 4
159 # the IPv6 address of R1's interface on N2 is 2000:102::1/64
161 cleanup_traceroute6()
165 for ns in host-1 host-2 router-1 router-2
167 ip netns del ${ns} 2>/dev/null
185 connect_ns router-2 eth3 - 2000:103::2/64 host-2 eth3 - 2000:103::4/64
186 ip netns exec host-2 ip route add default via 2000:103::2
189 connect_ns router-1 eth2 - 2000:102::1/64 router-2 eth2 - 2000:102::2/64
190 ip netns exec router-1 ip route add default via 2000:102::2
192 # Setup N1. host-1 and router-2 connect to a bridge in router-1.
193 ip netns exec router-1 ip link add name ${brdev} type bridge
194 ip netns exec router-1 ip link set ${brdev} up
195 ip netns exec router-1 ip addr add 2000:101::1/64 dev ${brdev}
197 connect_ns host-1 eth0 - 2000:101::3/64 router-1 eth0 - -
198 ip netns exec router-1 ip link set dev eth0 master ${brdev}
199 ip netns exec host-1 ip route add default via 2000:101::1
201 connect_ns router-2 eth1 - 2000:101::2/64 router-1 eth1 - -
202 ip netns exec router-1 ip link set dev eth1 master ${brdev}
205 ip netns exec host-1 ping6 -c5 2000:103::4 >/dev/null 2>&1
212 if [ ! -x "$(command -v traceroute6)" ]; then
213 echo "SKIP: Could not run IPV6 test without traceroute6"
219 # traceroute6 host-2 from host-1 (expects 2000:102::2)
220 run_cmd host-1 "traceroute6 2000:103::4 | grep -q 2000:102::2"
221 log_test $? 0 "IPV6 traceroute"
226 ################################################################################
229 # Verify that traceroute from H1 to H2 shows 1.0.1.1 in this scenario
232 # ---- 1.0.1.3/24 1.0.1.1/24 ---- 1.0.2.1/24 1.0.2.4/24 ----
233 # |H1|--------------------------|R1|--------------------------|H2|
234 # ---- N1 ---- N2 ----
236 # where net.ipv4.icmp_errors_use_inbound_ifaddr is set on R1 and
237 # 1.0.3.1/24 and 1.0.1.1/24 are respectively R1's primary and secondary
245 for ns in host-1 host-2 router
247 ip netns del ${ns} 2>/dev/null
261 connect_ns host-1 eth0 1.0.1.3/24 - \
262 router eth1 1.0.3.1/24 -
263 ip netns exec host-1 ip route add default via 1.0.1.1
265 ip netns exec router ip addr add 1.0.1.1/24 dev eth1
266 ip netns exec router sysctl -qw \
267 net.ipv4.icmp_errors_use_inbound_ifaddr=1
269 connect_ns host-2 eth0 1.0.2.4/24 - \
270 router eth2 1.0.2.1/24 -
271 ip netns exec host-2 ip route add default via 1.0.2.1
274 ip netns exec host-1 ping -c5 1.0.2.4 >/dev/null 2>&1
281 if [ ! -x "$(command -v traceroute)" ]; then
282 echo "SKIP: Could not run IPV4 test without traceroute"
288 # traceroute host-2 from host-1 (expects 1.0.1.1). Takes a while.
289 run_cmd host-1 "traceroute 1.0.2.4 | grep -q 1.0.1.1"
290 log_test $? 0 "IPV4 traceroute"
295 ################################################################################
304 ################################################################################
308 declare -i nsuccess=0
313 p) PAUSE_ON_FAIL=yes;;
314 v) VERBOSE=$(($VERBOSE + 1));;
321 printf "\nTests passed: %3d\n" ${nsuccess}
322 printf "Tests failed: %3d\n" ${nfail}