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