1#!/bin/bash 2# SPDX-License-Identifier: GPL-2.0 3 4ALL_TESTS=" 5 ping_ipv4 6 ping_ipv6 7 multipath_test 8 ping_ipv4_blackhole 9 ping_ipv6_blackhole 10" 11NUM_NETIFS=8 12source lib.sh 13 14h1_create() 15{ 16 vrf_create "vrf-h1" 17 ip link set dev $h1 master vrf-h1 18 19 ip link set dev vrf-h1 up 20 ip link set dev $h1 up 21 22 ip address add 192.0.2.2/24 dev $h1 23 ip address add 2001:db8:1::2/64 dev $h1 24 25 ip route add 198.51.100.0/24 vrf vrf-h1 nexthop via 192.0.2.1 26 ip route add 2001:db8:2::/64 vrf vrf-h1 nexthop via 2001:db8:1::1 27} 28 29h1_destroy() 30{ 31 ip route del 2001:db8:2::/64 vrf vrf-h1 32 ip route del 198.51.100.0/24 vrf vrf-h1 33 34 ip address del 2001:db8:1::2/64 dev $h1 35 ip address del 192.0.2.2/24 dev $h1 36 37 ip link set dev $h1 down 38 vrf_destroy "vrf-h1" 39} 40 41h2_create() 42{ 43 vrf_create "vrf-h2" 44 ip link set dev $h2 master vrf-h2 45 46 ip link set dev vrf-h2 up 47 ip link set dev $h2 up 48 49 ip address add 198.51.100.2/24 dev $h2 50 ip address add 2001:db8:2::2/64 dev $h2 51 52 ip route add 192.0.2.0/24 vrf vrf-h2 nexthop via 198.51.100.1 53 ip route add 2001:db8:1::/64 vrf vrf-h2 nexthop via 2001:db8:2::1 54} 55 56h2_destroy() 57{ 58 ip route del 2001:db8:1::/64 vrf vrf-h2 59 ip route del 192.0.2.0/24 vrf vrf-h2 60 61 ip address del 2001:db8:2::2/64 dev $h2 62 ip address del 198.51.100.2/24 dev $h2 63 64 ip link set dev $h2 down 65 vrf_destroy "vrf-h2" 66} 67 68router1_create() 69{ 70 vrf_create "vrf-r1" 71 ip link set dev $rp11 master vrf-r1 72 ip link set dev $rp12 master vrf-r1 73 ip link set dev $rp13 master vrf-r1 74 75 ip link set dev vrf-r1 up 76 ip link set dev $rp11 up 77 ip link set dev $rp12 up 78 ip link set dev $rp13 up 79 80 ip address add 192.0.2.1/24 dev $rp11 81 ip address add 2001:db8:1::1/64 dev $rp11 82 83 ip address add 169.254.2.12/24 dev $rp12 84 ip address add fe80:2::12/64 dev $rp12 85 86 ip address add 169.254.3.13/24 dev $rp13 87 ip address add fe80:3::13/64 dev $rp13 88} 89 90router1_destroy() 91{ 92 ip route del 2001:db8:2::/64 vrf vrf-r1 93 ip route del 198.51.100.0/24 vrf vrf-r1 94 95 ip address del fe80:3::13/64 dev $rp13 96 ip address del 169.254.3.13/24 dev $rp13 97 98 ip address del fe80:2::12/64 dev $rp12 99 ip address del 169.254.2.12/24 dev $rp12 100 101 ip address del 2001:db8:1::1/64 dev $rp11 102 ip address del 192.0.2.1/24 dev $rp11 103 104 ip nexthop del id 103 105 ip nexthop del id 101 106 ip nexthop del id 102 107 ip nexthop del id 106 108 ip nexthop del id 104 109 ip nexthop del id 105 110 111 ip link set dev $rp13 down 112 ip link set dev $rp12 down 113 ip link set dev $rp11 down 114 115 vrf_destroy "vrf-r1" 116} 117 118router2_create() 119{ 120 vrf_create "vrf-r2" 121 ip link set dev $rp21 master vrf-r2 122 ip link set dev $rp22 master vrf-r2 123 ip link set dev $rp23 master vrf-r2 124 125 ip link set dev vrf-r2 up 126 ip link set dev $rp21 up 127 ip link set dev $rp22 up 128 ip link set dev $rp23 up 129 130 ip address add 198.51.100.1/24 dev $rp21 131 ip address add 2001:db8:2::1/64 dev $rp21 132 133 ip address add 169.254.2.22/24 dev $rp22 134 ip address add fe80:2::22/64 dev $rp22 135 136 ip address add 169.254.3.23/24 dev $rp23 137 ip address add fe80:3::23/64 dev $rp23 138} 139 140router2_destroy() 141{ 142 ip route del 2001:db8:1::/64 vrf vrf-r2 143 ip route del 192.0.2.0/24 vrf vrf-r2 144 145 ip address del fe80:3::23/64 dev $rp23 146 ip address del 169.254.3.23/24 dev $rp23 147 148 ip address del fe80:2::22/64 dev $rp22 149 ip address del 169.254.2.22/24 dev $rp22 150 151 ip address del 2001:db8:2::1/64 dev $rp21 152 ip address del 198.51.100.1/24 dev $rp21 153 154 ip nexthop del id 201 155 ip nexthop del id 202 156 ip nexthop del id 204 157 ip nexthop del id 205 158 159 ip link set dev $rp23 down 160 ip link set dev $rp22 down 161 ip link set dev $rp21 down 162 163 vrf_destroy "vrf-r2" 164} 165 166routing_nh_obj() 167{ 168 ip nexthop add id 101 via 169.254.2.22 dev $rp12 169 ip nexthop add id 102 via 169.254.3.23 dev $rp13 170 ip nexthop add id 103 group 101/102 171 ip route add 198.51.100.0/24 vrf vrf-r1 nhid 103 172 173 ip nexthop add id 104 via fe80:2::22 dev $rp12 174 ip nexthop add id 105 via fe80:3::23 dev $rp13 175 ip nexthop add id 106 group 104/105 176 ip route add 2001:db8:2::/64 vrf vrf-r1 nhid 106 177 178 ip nexthop add id 201 via 169.254.2.12 dev $rp22 179 ip nexthop add id 202 via 169.254.3.13 dev $rp23 180 ip nexthop add id 203 group 201/202 181 ip route add 192.0.2.0/24 vrf vrf-r2 nhid 203 182 183 ip nexthop add id 204 via fe80:2::12 dev $rp22 184 ip nexthop add id 205 via fe80:3::13 dev $rp23 185 ip nexthop add id 206 group 204/205 186 ip route add 2001:db8:1::/64 vrf vrf-r2 nhid 206 187} 188 189multipath4_test() 190{ 191 local desc="$1" 192 local weight_rp12=$2 193 local weight_rp13=$3 194 local t0_rp12 t0_rp13 t1_rp12 t1_rp13 195 local packets_rp12 packets_rp13 196 197 # Transmit multiple flows from h1 to h2 and make sure they are 198 # distributed between both multipath links (rp12 and rp13) 199 # according to the configured weights. 200 sysctl_set net.ipv4.fib_multipath_hash_policy 1 201 ip nexthop replace id 103 group 101,$weight_rp12/102,$weight_rp13 202 203 t0_rp12=$(link_stats_tx_packets_get $rp12) 204 t0_rp13=$(link_stats_tx_packets_get $rp13) 205 206 ip vrf exec vrf-h1 $MZ $h1 -q -p 64 -A 192.0.2.2 -B 198.51.100.2 \ 207 -d 1msec -t udp "sp=1024,dp=0-32768" 208 209 t1_rp12=$(link_stats_tx_packets_get $rp12) 210 t1_rp13=$(link_stats_tx_packets_get $rp13) 211 212 let "packets_rp12 = $t1_rp12 - $t0_rp12" 213 let "packets_rp13 = $t1_rp13 - $t0_rp13" 214 multipath_eval "$desc" $weight_rp12 $weight_rp13 $packets_rp12 $packets_rp13 215 216 # Restore settings. 217 ip nexthop replace id 103 group 101/102 218 sysctl_restore net.ipv4.fib_multipath_hash_policy 219} 220 221multipath6_l4_test() 222{ 223 local desc="$1" 224 local weight_rp12=$2 225 local weight_rp13=$3 226 local t0_rp12 t0_rp13 t1_rp12 t1_rp13 227 local packets_rp12 packets_rp13 228 229 # Transmit multiple flows from h1 to h2 and make sure they are 230 # distributed between both multipath links (rp12 and rp13) 231 # according to the configured weights. 232 sysctl_set net.ipv6.fib_multipath_hash_policy 1 233 234 ip nexthop replace id 106 group 104,$weight_rp12/105,$weight_rp13 235 236 t0_rp12=$(link_stats_tx_packets_get $rp12) 237 t0_rp13=$(link_stats_tx_packets_get $rp13) 238 239 $MZ $h1 -6 -q -p 64 -A 2001:db8:1::2 -B 2001:db8:2::2 \ 240 -d 1msec -t udp "sp=1024,dp=0-32768" 241 242 t1_rp12=$(link_stats_tx_packets_get $rp12) 243 t1_rp13=$(link_stats_tx_packets_get $rp13) 244 245 let "packets_rp12 = $t1_rp12 - $t0_rp12" 246 let "packets_rp13 = $t1_rp13 - $t0_rp13" 247 multipath_eval "$desc" $weight_rp12 $weight_rp13 $packets_rp12 $packets_rp13 248 249 ip nexthop replace id 106 group 104/105 250 251 sysctl_restore net.ipv6.fib_multipath_hash_policy 252} 253 254multipath6_test() 255{ 256 local desc="$1" 257 local weight_rp12=$2 258 local weight_rp13=$3 259 local t0_rp12 t0_rp13 t1_rp12 t1_rp13 260 local packets_rp12 packets_rp13 261 262 ip nexthop replace id 106 group 104,$weight_rp12/105,$weight_rp13 263 264 t0_rp12=$(link_stats_tx_packets_get $rp12) 265 t0_rp13=$(link_stats_tx_packets_get $rp13) 266 267 # Generate 16384 echo requests, each with a random flow label. 268 for _ in $(seq 1 16384); do 269 ip vrf exec vrf-h1 $PING6 2001:db8:2::2 -F 0 -c 1 -q >/dev/null 2>&1 270 done 271 272 t1_rp12=$(link_stats_tx_packets_get $rp12) 273 t1_rp13=$(link_stats_tx_packets_get $rp13) 274 275 let "packets_rp12 = $t1_rp12 - $t0_rp12" 276 let "packets_rp13 = $t1_rp13 - $t0_rp13" 277 multipath_eval "$desc" $weight_rp12 $weight_rp13 $packets_rp12 $packets_rp13 278 279 ip nexthop replace id 106 group 104/105 280} 281 282multipath_test() 283{ 284 log_info "Running IPv4 multipath tests" 285 multipath4_test "ECMP" 1 1 286 multipath4_test "Weighted MP 2:1" 2 1 287 multipath4_test "Weighted MP 11:45" 11 45 288 289 log_info "Running IPv4 multipath tests with IPv6 link-local nexthops" 290 ip nexthop replace id 101 via fe80:2::22 dev $rp12 291 ip nexthop replace id 102 via fe80:3::23 dev $rp13 292 293 multipath4_test "ECMP" 1 1 294 multipath4_test "Weighted MP 2:1" 2 1 295 multipath4_test "Weighted MP 11:45" 11 45 296 297 ip nexthop replace id 102 via 169.254.3.23 dev $rp13 298 ip nexthop replace id 101 via 169.254.2.22 dev $rp12 299 300 log_info "Running IPv6 multipath tests" 301 multipath6_test "ECMP" 1 1 302 multipath6_test "Weighted MP 2:1" 2 1 303 multipath6_test "Weighted MP 11:45" 11 45 304 305 log_info "Running IPv6 L4 hash multipath tests" 306 multipath6_l4_test "ECMP" 1 1 307 multipath6_l4_test "Weighted MP 2:1" 2 1 308 multipath6_l4_test "Weighted MP 11:45" 11 45 309} 310 311ping_ipv4_blackhole() 312{ 313 RET=0 314 315 ip nexthop add id 1001 blackhole 316 ip nexthop add id 1002 group 1001 317 318 ip route replace 198.51.100.0/24 vrf vrf-r1 nhid 1001 319 ping_do $h1 198.51.100.2 320 check_fail $? "ping did not fail when using a blackhole nexthop" 321 322 ip route replace 198.51.100.0/24 vrf vrf-r1 nhid 1002 323 ping_do $h1 198.51.100.2 324 check_fail $? "ping did not fail when using a blackhole nexthop group" 325 326 ip route replace 198.51.100.0/24 vrf vrf-r1 nhid 103 327 ping_do $h1 198.51.100.2 328 check_err $? "ping failed with a valid nexthop" 329 330 log_test "IPv4 blackhole ping" 331 332 ip nexthop del id 1002 333 ip nexthop del id 1001 334} 335 336ping_ipv6_blackhole() 337{ 338 RET=0 339 340 ip -6 nexthop add id 1001 blackhole 341 ip nexthop add id 1002 group 1001 342 343 ip route replace 2001:db8:2::/64 vrf vrf-r1 nhid 1001 344 ping6_do $h1 2001:db8:2::2 345 check_fail $? "ping did not fail when using a blackhole nexthop" 346 347 ip route replace 2001:db8:2::/64 vrf vrf-r1 nhid 1002 348 ping6_do $h1 2001:db8:2::2 349 check_fail $? "ping did not fail when using a blackhole nexthop group" 350 351 ip route replace 2001:db8:2::/64 vrf vrf-r1 nhid 106 352 ping6_do $h1 2001:db8:2::2 353 check_err $? "ping failed with a valid nexthop" 354 355 log_test "IPv6 blackhole ping" 356 357 ip nexthop del id 1002 358 ip -6 nexthop del id 1001 359} 360 361setup_prepare() 362{ 363 h1=${NETIFS[p1]} 364 rp11=${NETIFS[p2]} 365 366 rp12=${NETIFS[p3]} 367 rp22=${NETIFS[p4]} 368 369 rp13=${NETIFS[p5]} 370 rp23=${NETIFS[p6]} 371 372 rp21=${NETIFS[p7]} 373 h2=${NETIFS[p8]} 374 375 vrf_prepare 376 377 h1_create 378 h2_create 379 380 router1_create 381 router2_create 382 383 forwarding_enable 384} 385 386cleanup() 387{ 388 pre_cleanup 389 390 forwarding_restore 391 392 router2_destroy 393 router1_destroy 394 395 h2_destroy 396 h1_destroy 397 398 vrf_cleanup 399} 400 401ping_ipv4() 402{ 403 ping_test $h1 198.51.100.2 404} 405 406ping_ipv6() 407{ 408 ping6_test $h1 2001:db8:2::2 409} 410 411ip nexthop ls >/dev/null 2>&1 412if [ $? -ne 0 ]; then 413 echo "Nexthop objects not supported; skipping tests" 414 exit $ksft_skip 415fi 416 417trap cleanup EXIT 418 419setup_prepare 420setup_wait 421routing_nh_obj 422 423tests_run 424 425exit $EXIT_STATUS 426