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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 | #!/bin/bash # SPDX-License-Identifier: GPL-2.0 ALL_TESTS=" ping_ipv4 ping_ipv6 multipath_test ping_ipv4_blackhole ping_ipv6_blackhole " NUM_NETIFS=8 source lib.sh h1_create() { vrf_create "vrf-h1" ip link set dev $h1 master vrf-h1 ip link set dev vrf-h1 up ip link set dev $h1 up ip address add 192.0.2.2/24 dev $h1 ip address add 2001:db8:1::2/64 dev $h1 ip route add 198.51.100.0/24 vrf vrf-h1 nexthop via 192.0.2.1 ip route add 2001:db8:2::/64 vrf vrf-h1 nexthop via 2001:db8:1::1 } h1_destroy() { ip route del 2001:db8:2::/64 vrf vrf-h1 ip route del 198.51.100.0/24 vrf vrf-h1 ip address del 2001:db8:1::2/64 dev $h1 ip address del 192.0.2.2/24 dev $h1 ip link set dev $h1 down vrf_destroy "vrf-h1" } h2_create() { vrf_create "vrf-h2" ip link set dev $h2 master vrf-h2 ip link set dev vrf-h2 up ip link set dev $h2 up ip address add 198.51.100.2/24 dev $h2 ip address add 2001:db8:2::2/64 dev $h2 ip route add 192.0.2.0/24 vrf vrf-h2 nexthop via 198.51.100.1 ip route add 2001:db8:1::/64 vrf vrf-h2 nexthop via 2001:db8:2::1 } h2_destroy() { ip route del 2001:db8:1::/64 vrf vrf-h2 ip route del 192.0.2.0/24 vrf vrf-h2 ip address del 2001:db8:2::2/64 dev $h2 ip address del 198.51.100.2/24 dev $h2 ip link set dev $h2 down vrf_destroy "vrf-h2" } router1_create() { vrf_create "vrf-r1" ip link set dev $rp11 master vrf-r1 ip link set dev $rp12 master vrf-r1 ip link set dev $rp13 master vrf-r1 ip link set dev vrf-r1 up ip link set dev $rp11 up ip link set dev $rp12 up ip link set dev $rp13 up ip address add 192.0.2.1/24 dev $rp11 ip address add 2001:db8:1::1/64 dev $rp11 ip address add 169.254.2.12/24 dev $rp12 ip address add fe80:2::12/64 dev $rp12 ip address add 169.254.3.13/24 dev $rp13 ip address add fe80:3::13/64 dev $rp13 } router1_destroy() { ip route del 2001:db8:2::/64 vrf vrf-r1 ip route del 198.51.100.0/24 vrf vrf-r1 ip address del fe80:3::13/64 dev $rp13 ip address del 169.254.3.13/24 dev $rp13 ip address del fe80:2::12/64 dev $rp12 ip address del 169.254.2.12/24 dev $rp12 ip address del 2001:db8:1::1/64 dev $rp11 ip address del 192.0.2.1/24 dev $rp11 ip nexthop del id 103 ip nexthop del id 101 ip nexthop del id 102 ip nexthop del id 106 ip nexthop del id 104 ip nexthop del id 105 ip link set dev $rp13 down ip link set dev $rp12 down ip link set dev $rp11 down vrf_destroy "vrf-r1" } router2_create() { vrf_create "vrf-r2" ip link set dev $rp21 master vrf-r2 ip link set dev $rp22 master vrf-r2 ip link set dev $rp23 master vrf-r2 ip link set dev vrf-r2 up ip link set dev $rp21 up ip link set dev $rp22 up ip link set dev $rp23 up ip address add 198.51.100.1/24 dev $rp21 ip address add 2001:db8:2::1/64 dev $rp21 ip address add 169.254.2.22/24 dev $rp22 ip address add fe80:2::22/64 dev $rp22 ip address add 169.254.3.23/24 dev $rp23 ip address add fe80:3::23/64 dev $rp23 } router2_destroy() { ip route del 2001:db8:1::/64 vrf vrf-r2 ip route del 192.0.2.0/24 vrf vrf-r2 ip address del fe80:3::23/64 dev $rp23 ip address del 169.254.3.23/24 dev $rp23 ip address del fe80:2::22/64 dev $rp22 ip address del 169.254.2.22/24 dev $rp22 ip address del 2001:db8:2::1/64 dev $rp21 ip address del 198.51.100.1/24 dev $rp21 ip nexthop del id 201 ip nexthop del id 202 ip nexthop del id 204 ip nexthop del id 205 ip link set dev $rp23 down ip link set dev $rp22 down ip link set dev $rp21 down vrf_destroy "vrf-r2" } routing_nh_obj() { ip nexthop add id 101 via 169.254.2.22 dev $rp12 ip nexthop add id 102 via 169.254.3.23 dev $rp13 ip nexthop add id 103 group 101/102 ip route add 198.51.100.0/24 vrf vrf-r1 nhid 103 ip nexthop add id 104 via fe80:2::22 dev $rp12 ip nexthop add id 105 via fe80:3::23 dev $rp13 ip nexthop add id 106 group 104/105 ip route add 2001:db8:2::/64 vrf vrf-r1 nhid 106 ip nexthop add id 201 via 169.254.2.12 dev $rp22 ip nexthop add id 202 via 169.254.3.13 dev $rp23 ip nexthop add id 203 group 201/202 ip route add 192.0.2.0/24 vrf vrf-r2 nhid 203 ip nexthop add id 204 via fe80:2::12 dev $rp22 ip nexthop add id 205 via fe80:3::13 dev $rp23 ip nexthop add id 206 group 204/205 ip route add 2001:db8:1::/64 vrf vrf-r2 nhid 206 } multipath4_test() { local desc="$1" local weight_rp12=$2 local weight_rp13=$3 local t0_rp12 t0_rp13 t1_rp12 t1_rp13 local packets_rp12 packets_rp13 # Transmit multiple flows from h1 to h2 and make sure they are # distributed between both multipath links (rp12 and rp13) # according to the configured weights. sysctl_set net.ipv4.fib_multipath_hash_policy 1 ip nexthop replace id 103 group 101,$weight_rp12/102,$weight_rp13 t0_rp12=$(link_stats_tx_packets_get $rp12) t0_rp13=$(link_stats_tx_packets_get $rp13) ip vrf exec vrf-h1 $MZ $h1 -q -p 64 -A 192.0.2.2 -B 198.51.100.2 \ -d 1msec -t udp "sp=1024,dp=0-32768" t1_rp12=$(link_stats_tx_packets_get $rp12) t1_rp13=$(link_stats_tx_packets_get $rp13) let "packets_rp12 = $t1_rp12 - $t0_rp12" let "packets_rp13 = $t1_rp13 - $t0_rp13" multipath_eval "$desc" $weight_rp12 $weight_rp13 $packets_rp12 $packets_rp13 # Restore settings. ip nexthop replace id 103 group 101/102 sysctl_restore net.ipv4.fib_multipath_hash_policy } multipath6_l4_test() { local desc="$1" local weight_rp12=$2 local weight_rp13=$3 local t0_rp12 t0_rp13 t1_rp12 t1_rp13 local packets_rp12 packets_rp13 # Transmit multiple flows from h1 to h2 and make sure they are # distributed between both multipath links (rp12 and rp13) # according to the configured weights. sysctl_set net.ipv6.fib_multipath_hash_policy 1 ip nexthop replace id 106 group 104,$weight_rp12/105,$weight_rp13 t0_rp12=$(link_stats_tx_packets_get $rp12) t0_rp13=$(link_stats_tx_packets_get $rp13) $MZ $h1 -6 -q -p 64 -A 2001:db8:1::2 -B 2001:db8:2::2 \ -d 1msec -t udp "sp=1024,dp=0-32768" t1_rp12=$(link_stats_tx_packets_get $rp12) t1_rp13=$(link_stats_tx_packets_get $rp13) let "packets_rp12 = $t1_rp12 - $t0_rp12" let "packets_rp13 = $t1_rp13 - $t0_rp13" multipath_eval "$desc" $weight_rp12 $weight_rp13 $packets_rp12 $packets_rp13 ip nexthop replace id 106 group 104/105 sysctl_restore net.ipv6.fib_multipath_hash_policy } multipath6_test() { local desc="$1" local weight_rp12=$2 local weight_rp13=$3 local t0_rp12 t0_rp13 t1_rp12 t1_rp13 local packets_rp12 packets_rp13 ip nexthop replace id 106 group 104,$weight_rp12/105,$weight_rp13 t0_rp12=$(link_stats_tx_packets_get $rp12) t0_rp13=$(link_stats_tx_packets_get $rp13) # Generate 16384 echo requests, each with a random flow label. for _ in $(seq 1 16384); do ip vrf exec vrf-h1 $PING6 2001:db8:2::2 -F 0 -c 1 -q >/dev/null 2>&1 done t1_rp12=$(link_stats_tx_packets_get $rp12) t1_rp13=$(link_stats_tx_packets_get $rp13) let "packets_rp12 = $t1_rp12 - $t0_rp12" let "packets_rp13 = $t1_rp13 - $t0_rp13" multipath_eval "$desc" $weight_rp12 $weight_rp13 $packets_rp12 $packets_rp13 ip nexthop replace id 106 group 104/105 } multipath_test() { log_info "Running IPv4 multipath tests" multipath4_test "ECMP" 1 1 multipath4_test "Weighted MP 2:1" 2 1 multipath4_test "Weighted MP 11:45" 11 45 log_info "Running IPv4 multipath tests with IPv6 link-local nexthops" ip nexthop replace id 101 via fe80:2::22 dev $rp12 ip nexthop replace id 102 via fe80:3::23 dev $rp13 multipath4_test "ECMP" 1 1 multipath4_test "Weighted MP 2:1" 2 1 multipath4_test "Weighted MP 11:45" 11 45 ip nexthop replace id 102 via 169.254.3.23 dev $rp13 ip nexthop replace id 101 via 169.254.2.22 dev $rp12 log_info "Running IPv6 multipath tests" multipath6_test "ECMP" 1 1 multipath6_test "Weighted MP 2:1" 2 1 multipath6_test "Weighted MP 11:45" 11 45 log_info "Running IPv6 L4 hash multipath tests" multipath6_l4_test "ECMP" 1 1 multipath6_l4_test "Weighted MP 2:1" 2 1 multipath6_l4_test "Weighted MP 11:45" 11 45 } ping_ipv4_blackhole() { RET=0 ip nexthop add id 1001 blackhole ip nexthop add id 1002 group 1001 ip route replace 198.51.100.0/24 vrf vrf-r1 nhid 1001 ping_do $h1 198.51.100.2 check_fail $? "ping did not fail when using a blackhole nexthop" ip route replace 198.51.100.0/24 vrf vrf-r1 nhid 1002 ping_do $h1 198.51.100.2 check_fail $? "ping did not fail when using a blackhole nexthop group" ip route replace 198.51.100.0/24 vrf vrf-r1 nhid 103 ping_do $h1 198.51.100.2 check_err $? "ping failed with a valid nexthop" log_test "IPv4 blackhole ping" ip nexthop del id 1002 ip nexthop del id 1001 } ping_ipv6_blackhole() { RET=0 ip -6 nexthop add id 1001 blackhole ip nexthop add id 1002 group 1001 ip route replace 2001:db8:2::/64 vrf vrf-r1 nhid 1001 ping6_do $h1 2001:db8:2::2 check_fail $? "ping did not fail when using a blackhole nexthop" ip route replace 2001:db8:2::/64 vrf vrf-r1 nhid 1002 ping6_do $h1 2001:db8:2::2 check_fail $? "ping did not fail when using a blackhole nexthop group" ip route replace 2001:db8:2::/64 vrf vrf-r1 nhid 106 ping6_do $h1 2001:db8:2::2 check_err $? "ping failed with a valid nexthop" log_test "IPv6 blackhole ping" ip nexthop del id 1002 ip -6 nexthop del id 1001 } setup_prepare() { h1=${NETIFS[p1]} rp11=${NETIFS[p2]} rp12=${NETIFS[p3]} rp22=${NETIFS[p4]} rp13=${NETIFS[p5]} rp23=${NETIFS[p6]} rp21=${NETIFS[p7]} h2=${NETIFS[p8]} vrf_prepare h1_create h2_create router1_create router2_create forwarding_enable } cleanup() { pre_cleanup forwarding_restore router2_destroy router1_destroy h2_destroy h1_destroy vrf_cleanup } ping_ipv4() { ping_test $h1 198.51.100.2 } ping_ipv6() { ping6_test $h1 2001:db8:2::2 } ip nexthop ls >/dev/null 2>&1 if [ $? -ne 0 ]; then echo "Nexthop objects not supported; skipping tests" exit $ksft_skip fi trap cleanup EXIT setup_prepare setup_wait routing_nh_obj tests_run exit $EXIT_STATUS |