1 #!/bin/bash 1 #!/bin/bash
2 # SPDX-License-Identifier: GPL-2.0 2 # SPDX-License-Identifier: GPL-2.0
3 # 3 #
4 # Run traceroute/traceroute6 tests 4 # Run traceroute/traceroute6 tests
5 # 5 #
6 6
7 source lib.sh <<
8 VERBOSE=0 7 VERBOSE=0
9 PAUSE_ON_FAIL=no 8 PAUSE_ON_FAIL=no
10 9
11 ############################################## 10 ################################################################################
12 # 11 #
13 log_test() 12 log_test()
14 { 13 {
15 local rc=$1 14 local rc=$1
16 local expected=$2 15 local expected=$2
17 local msg="$3" 16 local msg="$3"
18 17
19 if [ ${rc} -eq ${expected} ]; then 18 if [ ${rc} -eq ${expected} ]; then
20 printf "TEST: %-60s [ OK ]\n" 19 printf "TEST: %-60s [ OK ]\n" "${msg}"
21 nsuccess=$((nsuccess+1)) 20 nsuccess=$((nsuccess+1))
22 else 21 else
23 ret=1 22 ret=1
24 nfail=$((nfail+1)) 23 nfail=$((nfail+1))
25 printf "TEST: %-60s [FAIL]\n" 24 printf "TEST: %-60s [FAIL]\n" "${msg}"
26 if [ "${PAUSE_ON_FAIL}" = "yes 25 if [ "${PAUSE_ON_FAIL}" = "yes" ]; then
27 echo 26 echo
28 echo "hit enter to con 27 echo "hit enter to continue, 'q' to quit"
29 read a 28 read a
30 [ "$a" = "q" ] && exit 29 [ "$a" = "q" ] && exit 1
31 fi 30 fi
32 fi 31 fi
33 } 32 }
34 33
35 run_cmd() 34 run_cmd()
36 { 35 {
37 local ns 36 local ns
38 local cmd 37 local cmd
39 local out 38 local out
40 local rc 39 local rc
41 40
42 ns="$1" 41 ns="$1"
43 shift 42 shift
44 cmd="$*" 43 cmd="$*"
45 44
46 if [ "$VERBOSE" = "1" ]; then 45 if [ "$VERBOSE" = "1" ]; then
47 printf " COMMAND: $cmd\n" 46 printf " COMMAND: $cmd\n"
48 fi 47 fi
49 48
50 out=$(eval ip netns exec ${ns} ${cmd} 49 out=$(eval ip netns exec ${ns} ${cmd} 2>&1)
51 rc=$? 50 rc=$?
52 if [ "$VERBOSE" = "1" -a -n "$out" ]; 51 if [ "$VERBOSE" = "1" -a -n "$out" ]; then
53 echo " $out" 52 echo " $out"
54 fi 53 fi
55 54
56 [ "$VERBOSE" = "1" ] && echo 55 [ "$VERBOSE" = "1" ] && echo
57 56
58 return $rc 57 return $rc
59 } 58 }
60 59
61 ############################################## 60 ################################################################################
62 # create namespaces and interconnects 61 # create namespaces and interconnects
63 62
64 create_ns() 63 create_ns()
65 { 64 {
66 local ns=$1 65 local ns=$1
67 local addr=$2 66 local addr=$2
68 local addr6=$3 67 local addr6=$3
69 68
70 [ -z "${addr}" ] && addr="-" 69 [ -z "${addr}" ] && addr="-"
71 [ -z "${addr6}" ] && addr6="-" 70 [ -z "${addr6}" ] && addr6="-"
72 71
>> 72 ip netns add ${ns}
>> 73
>> 74 ip netns exec ${ns} ip link set lo up
73 if [ "${addr}" != "-" ]; then 75 if [ "${addr}" != "-" ]; then
74 ip netns exec ${ns} ip addr ad 76 ip netns exec ${ns} ip addr add dev lo ${addr}
75 fi 77 fi
76 if [ "${addr6}" != "-" ]; then 78 if [ "${addr6}" != "-" ]; then
77 ip netns exec ${ns} ip -6 addr 79 ip netns exec ${ns} ip -6 addr add dev lo ${addr6}
78 fi 80 fi
79 81
80 ip netns exec ${ns} ip ro add unreacha 82 ip netns exec ${ns} ip ro add unreachable default metric 8192
81 ip netns exec ${ns} ip -6 ro add unrea 83 ip netns exec ${ns} ip -6 ro add unreachable default metric 8192
82 84
83 ip netns exec ${ns} sysctl -qw net.ipv 85 ip netns exec ${ns} sysctl -qw net.ipv4.ip_forward=1
84 ip netns exec ${ns} sysctl -qw net.ipv 86 ip netns exec ${ns} sysctl -qw net.ipv6.conf.all.keep_addr_on_down=1
85 ip netns exec ${ns} sysctl -qw net.ipv 87 ip netns exec ${ns} sysctl -qw net.ipv6.conf.all.forwarding=1
86 ip netns exec ${ns} sysctl -qw net.ipv 88 ip netns exec ${ns} sysctl -qw net.ipv6.conf.default.forwarding=1
87 ip netns exec ${ns} sysctl -qw net.ipv 89 ip netns exec ${ns} sysctl -qw net.ipv6.conf.default.accept_dad=0
88 } 90 }
89 91
90 # create veth pair to connect namespaces and a 92 # create veth pair to connect namespaces and apply addresses.
91 connect_ns() 93 connect_ns()
92 { 94 {
93 local ns1=$1 95 local ns1=$1
94 local ns1_dev=$2 96 local ns1_dev=$2
95 local ns1_addr=$3 97 local ns1_addr=$3
96 local ns1_addr6=$4 98 local ns1_addr6=$4
97 local ns2=$5 99 local ns2=$5
98 local ns2_dev=$6 100 local ns2_dev=$6
99 local ns2_addr=$7 101 local ns2_addr=$7
100 local ns2_addr6=$8 102 local ns2_addr6=$8
101 103
102 ip netns exec ${ns1} ip li add ${ns1_d 104 ip netns exec ${ns1} ip li add ${ns1_dev} type veth peer name tmp
103 ip netns exec ${ns1} ip li set ${ns1_d 105 ip netns exec ${ns1} ip li set ${ns1_dev} up
104 ip netns exec ${ns1} ip li set tmp net 106 ip netns exec ${ns1} ip li set tmp netns ${ns2} name ${ns2_dev}
105 ip netns exec ${ns2} ip li set ${ns2_d 107 ip netns exec ${ns2} ip li set ${ns2_dev} up
106 108
107 if [ "${ns1_addr}" != "-" ]; then 109 if [ "${ns1_addr}" != "-" ]; then
108 ip netns exec ${ns1} ip addr a 110 ip netns exec ${ns1} ip addr add dev ${ns1_dev} ${ns1_addr}
109 fi 111 fi
110 112
111 if [ "${ns2_addr}" != "-" ]; then 113 if [ "${ns2_addr}" != "-" ]; then
112 ip netns exec ${ns2} ip addr a 114 ip netns exec ${ns2} ip addr add dev ${ns2_dev} ${ns2_addr}
113 fi 115 fi
114 116
115 if [ "${ns1_addr6}" != "-" ]; then 117 if [ "${ns1_addr6}" != "-" ]; then
116 ip netns exec ${ns1} ip addr a 118 ip netns exec ${ns1} ip addr add dev ${ns1_dev} ${ns1_addr6}
117 fi 119 fi
118 120
119 if [ "${ns2_addr6}" != "-" ]; then 121 if [ "${ns2_addr6}" != "-" ]; then
120 ip netns exec ${ns2} ip addr a 122 ip netns exec ${ns2} ip addr add dev ${ns2_dev} ${ns2_addr6}
121 fi 123 fi
122 } 124 }
123 125
124 ############################################## 126 ################################################################################
125 # traceroute6 test 127 # traceroute6 test
126 # 128 #
127 # Verify that in this scenario 129 # Verify that in this scenario
128 # 130 #
129 # ------------------------ N2 131 # ------------------------ N2
130 # | | 132 # | |
131 # ------ ------ N3 ---- 133 # ------ ------ N3 ----
132 # | R1 | | R2 |------|H2| 134 # | R1 | | R2 |------|H2|
133 # ------ ------ ---- 135 # ------ ------ ----
134 # | | 136 # | |
135 # ------------------------ N1 137 # ------------------------ N1
136 # | 138 # |
137 # ---- 139 # ----
138 # |H1| 140 # |H1|
139 # ---- 141 # ----
140 # 142 #
141 # where H1's default route goes through R1 and 143 # where H1's default route goes through R1 and R1's default route goes
142 # through R2 over N2, traceroute6 from H1 to H 144 # through R2 over N2, traceroute6 from H1 to H2 reports R2's address
143 # on N2 and not N1. 145 # on N2 and not N1.
144 # 146 #
145 # Addresses are assigned as follows: 147 # Addresses are assigned as follows:
146 # 148 #
147 # N1: 2000:101::/64 149 # N1: 2000:101::/64
148 # N2: 2000:102::/64 150 # N2: 2000:102::/64
149 # N3: 2000:103::/64 151 # N3: 2000:103::/64
150 # 152 #
151 # R1's host part of address: 1 153 # R1's host part of address: 1
152 # R2's host part of address: 2 154 # R2's host part of address: 2
153 # H1's host part of address: 3 155 # H1's host part of address: 3
154 # H2's host part of address: 4 156 # H2's host part of address: 4
155 # 157 #
156 # For example: 158 # For example:
157 # the IPv6 address of R1's interface on N2 is 159 # the IPv6 address of R1's interface on N2 is 2000:102::1/64
158 160
159 cleanup_traceroute6() 161 cleanup_traceroute6()
160 { 162 {
161 cleanup_ns $h1 $h2 $r1 $r2 !! 163 local ns
>> 164
>> 165 for ns in host-1 host-2 router-1 router-2
>> 166 do
>> 167 ip netns del ${ns} 2>/dev/null
>> 168 done
162 } 169 }
163 170
164 setup_traceroute6() 171 setup_traceroute6()
165 { 172 {
166 brdev=br0 173 brdev=br0
167 174
168 # start clean 175 # start clean
169 cleanup_traceroute6 176 cleanup_traceroute6
170 177
171 set -e 178 set -e
172 setup_ns h1 h2 r1 r2 !! 179 create_ns host-1
173 create_ns $h1 !! 180 create_ns host-2
174 create_ns $h2 !! 181 create_ns router-1
175 create_ns $r1 !! 182 create_ns router-2
176 create_ns $r2 <<
177 183
178 # Setup N3 184 # Setup N3
179 connect_ns $r2 eth3 - 2000:103::2/64 $ !! 185 connect_ns router-2 eth3 - 2000:103::2/64 host-2 eth3 - 2000:103::4/64
180 ip netns exec $h2 ip route add default !! 186 ip netns exec host-2 ip route add default via 2000:103::2
181 187
182 # Setup N2 188 # Setup N2
183 connect_ns $r1 eth2 - 2000:102::1/64 $ !! 189 connect_ns router-1 eth2 - 2000:102::1/64 router-2 eth2 - 2000:102::2/64
184 ip netns exec $r1 ip route add default !! 190 ip netns exec router-1 ip route add default via 2000:102::2
185 191
186 # Setup N1. host-1 and router-2 connec 192 # Setup N1. host-1 and router-2 connect to a bridge in router-1.
187 ip netns exec $r1 ip link add name ${b !! 193 ip netns exec router-1 ip link add name ${brdev} type bridge
188 ip netns exec $r1 ip link set ${brdev} !! 194 ip netns exec router-1 ip link set ${brdev} up
189 ip netns exec $r1 ip addr add 2000:101 !! 195 ip netns exec router-1 ip addr add 2000:101::1/64 dev ${brdev}
190 !! 196
191 connect_ns $h1 eth0 - 2000:101::3/64 $ !! 197 connect_ns host-1 eth0 - 2000:101::3/64 router-1 eth0 - -
192 ip netns exec $r1 ip link set dev eth0 !! 198 ip netns exec router-1 ip link set dev eth0 master ${brdev}
193 ip netns exec $h1 ip route add default !! 199 ip netns exec host-1 ip route add default via 2000:101::1
194 200
195 connect_ns $r2 eth1 - 2000:101::2/64 $ !! 201 connect_ns router-2 eth1 - 2000:101::2/64 router-1 eth1 - -
196 ip netns exec $r1 ip link set dev eth1 !! 202 ip netns exec router-1 ip link set dev eth1 master ${brdev}
197 203
198 # Prime the network 204 # Prime the network
199 ip netns exec $h1 ping6 -c5 2000:103:: !! 205 ip netns exec host-1 ping6 -c5 2000:103::4 >/dev/null 2>&1
200 206
201 set +e 207 set +e
202 } 208 }
203 209
204 run_traceroute6() 210 run_traceroute6()
205 { 211 {
206 if [ ! -x "$(command -v traceroute6)" 212 if [ ! -x "$(command -v traceroute6)" ]; then
207 echo "SKIP: Could not run IPV6 213 echo "SKIP: Could not run IPV6 test without traceroute6"
208 return 214 return
209 fi 215 fi
210 216
211 setup_traceroute6 217 setup_traceroute6
212 218
213 # traceroute6 host-2 from host-1 (expe 219 # traceroute6 host-2 from host-1 (expects 2000:102::2)
214 run_cmd $h1 "traceroute6 2000:103::4 | !! 220 run_cmd host-1 "traceroute6 2000:103::4 | grep -q 2000:102::2"
215 log_test $? 0 "IPV6 traceroute" 221 log_test $? 0 "IPV6 traceroute"
216 222
217 cleanup_traceroute6 223 cleanup_traceroute6
218 } 224 }
219 225
220 ############################################## 226 ################################################################################
221 # traceroute test 227 # traceroute test
222 # 228 #
223 # Verify that traceroute from H1 to H2 shows 1 229 # Verify that traceroute from H1 to H2 shows 1.0.1.1 in this scenario
224 # 230 #
225 # 1.0.3.1/24 231 # 1.0.3.1/24
226 # ---- 1.0.1.3/24 1.0.1.1/24 ---- 1.0.2.1/2 232 # ---- 1.0.1.3/24 1.0.1.1/24 ---- 1.0.2.1/24 1.0.2.4/24 ----
227 # |H1|--------------------------|R1|---------- 233 # |H1|--------------------------|R1|--------------------------|H2|
228 # ---- N1 ---- 234 # ---- N1 ---- N2 ----
229 # 235 #
230 # where net.ipv4.icmp_errors_use_inbound_ifadd 236 # where net.ipv4.icmp_errors_use_inbound_ifaddr is set on R1 and
231 # 1.0.3.1/24 and 1.0.1.1/24 are respectively R 237 # 1.0.3.1/24 and 1.0.1.1/24 are respectively R1's primary and secondary
232 # address on N1. 238 # address on N1.
233 # 239 #
234 240
235 cleanup_traceroute() 241 cleanup_traceroute()
236 { 242 {
237 cleanup_ns $h1 $h2 $router !! 243 local ns
>> 244
>> 245 for ns in host-1 host-2 router
>> 246 do
>> 247 ip netns del ${ns} 2>/dev/null
>> 248 done
238 } 249 }
239 250
240 setup_traceroute() 251 setup_traceroute()
241 { 252 {
242 # start clean 253 # start clean
243 cleanup_traceroute 254 cleanup_traceroute
244 255
245 set -e 256 set -e
246 setup_ns h1 h2 router !! 257 create_ns host-1
247 create_ns $h1 !! 258 create_ns host-2
248 create_ns $h2 !! 259 create_ns router
249 create_ns $router !! 260
250 !! 261 connect_ns host-1 eth0 1.0.1.3/24 - \
251 connect_ns $h1 eth0 1.0.1.3/24 - \ !! 262 router eth1 1.0.3.1/24 -
252 $router eth1 1.0.3.1/24 - !! 263 ip netns exec host-1 ip route add default via 1.0.1.1
253 ip netns exec $h1 ip route add default <<
254 264
255 ip netns exec $router ip addr add 1.0. !! 265 ip netns exec router ip addr add 1.0.1.1/24 dev eth1
256 ip netns exec $router sysctl -qw \ !! 266 ip netns exec router sysctl -qw \
257 net.ipv4.icmp_ 267 net.ipv4.icmp_errors_use_inbound_ifaddr=1
258 268
259 connect_ns $h2 eth0 1.0.2.4/24 - \ !! 269 connect_ns host-2 eth0 1.0.2.4/24 - \
260 $router eth2 1.0.2.1/24 - !! 270 router eth2 1.0.2.1/24 -
261 ip netns exec $h2 ip route add default !! 271 ip netns exec host-2 ip route add default via 1.0.2.1
262 272
263 # Prime the network 273 # Prime the network
264 ip netns exec $h1 ping -c5 1.0.2.4 >/d !! 274 ip netns exec host-1 ping -c5 1.0.2.4 >/dev/null 2>&1
265 275
266 set +e 276 set +e
267 } 277 }
268 278
269 run_traceroute() 279 run_traceroute()
270 { 280 {
271 if [ ! -x "$(command -v traceroute)" ] 281 if [ ! -x "$(command -v traceroute)" ]; then
272 echo "SKIP: Could not run IPV4 282 echo "SKIP: Could not run IPV4 test without traceroute"
273 return 283 return
274 fi 284 fi
275 285
276 setup_traceroute 286 setup_traceroute
277 287
278 # traceroute host-2 from host-1 (expec 288 # traceroute host-2 from host-1 (expects 1.0.1.1). Takes a while.
279 run_cmd $h1 "traceroute 1.0.2.4 | grep !! 289 run_cmd host-1 "traceroute 1.0.2.4 | grep -q 1.0.1.1"
280 log_test $? 0 "IPV4 traceroute" 290 log_test $? 0 "IPV4 traceroute"
281 291
282 cleanup_traceroute 292 cleanup_traceroute
283 } 293 }
284 294
285 ############################################## 295 ################################################################################
286 # Run tests 296 # Run tests
287 297
288 run_tests() 298 run_tests()
289 { 299 {
290 run_traceroute6 300 run_traceroute6
291 run_traceroute 301 run_traceroute
292 } 302 }
293 303
294 ############################################## 304 ################################################################################
295 # main 305 # main
296 306
297 declare -i nfail=0 307 declare -i nfail=0
298 declare -i nsuccess=0 308 declare -i nsuccess=0
299 309
300 while getopts :pv o 310 while getopts :pv o
301 do 311 do
302 case $o in 312 case $o in
303 p) PAUSE_ON_FAIL=yes;; 313 p) PAUSE_ON_FAIL=yes;;
304 v) VERBOSE=$(($VERBOSE + 1));; 314 v) VERBOSE=$(($VERBOSE + 1));;
305 *) exit 1;; 315 *) exit 1;;
306 esac 316 esac
307 done 317 done
308 318
309 run_tests 319 run_tests
310 320
311 printf "\nTests passed: %3d\n" ${nsuccess} 321 printf "\nTests passed: %3d\n" ${nsuccess}
312 printf "Tests failed: %3d\n" ${nfail} 322 printf "Tests failed: %3d\n" ${nfail}
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