tools/testing/selftests/net/forwarding/router_mpath_nh_res.sh

   1 #!/bin/bash
   2 # SPDX-License-Identifier: GPL-2.0
   3
   4 # +-------------------------+
   5 # |  H1                     |
   6 # |               $h1 +     |
   7 # |      192.0.2.2/24 |     |
   8 # |  2001:db8:1::2/64 |     |
   9 # +-------------------|-----+
  10 #                     |
  11 # +-------------------|----------------------+
  12 # |                   |                   R1 |
  13 # |             $rp11 +                      |
  14 # |      192.0.2.1/24                        |
  15 # |  2001:db8:1::1/64                        |
  16 # |                                          |
  17 # |  + $rp12              + $rp13            |
  18 # |  | 169.254.2.12/24    | 169.254.3.13/24  |
  19 # |  | fe80:2::12/64      | fe80:3::13/64    |
  20 # +--|--------------------|------------------+
  21 #    |                    |
  22 # +--|--------------------|------------------+
  23 # |  + $rp22              + $rp23            |
  24 # |    169.254.2.22/24      169.254.3.23/24  |
  25 # |    fe80:2::22/64        fe80:3::23/64    |
  26 # |                                          |
  27 # |             $rp21 +                      |
  28 # |   198.51.100.1/24 |                      |
  29 # |  2001:db8:2::1/64 |                   R2 |
  30 # +-------------------|----------------------+
  31 #                     |
  32 # +-------------------|-----+
  33 # |                   |     |
  34 # |               $h2 +     |
  35 # |   198.51.100.2/24       |
  36 # |  2001:db8:2::2/64    H2 |
  37 # +-------------------------+
  38
  39 ALL_TESTS="
  40         ping_ipv4
  41         ping_ipv6
  42         multipath_test
  43         multipath16_test
  44         nh_stats_test_v4
  45         nh_stats_test_v6
  46 "
  47 NUM_NETIFS=8
  48 source lib.sh
  49 source router_mpath_nh_lib.sh
  50
  51 h1_create()
  52 {
  53         vrf_create "vrf-h1"
  54         ip link set dev $h1 master vrf-h1
  55
  56         ip link set dev vrf-h1 up
  57         ip link set dev $h1 up
  58
  59         ip address add 192.0.2.2/24 dev $h1
  60         ip address add 2001:db8:1::2/64 dev $h1
  61
  62         ip route add 198.51.100.0/24 vrf vrf-h1 nexthop via 192.0.2.1
  63         ip route add 2001:db8:2::/64 vrf vrf-h1 nexthop via 2001:db8:1::1
  64 }
  65
  66 h1_destroy()
  67 {
  68         ip route del 2001:db8:2::/64 vrf vrf-h1
  69         ip route del 198.51.100.0/24 vrf vrf-h1
  70
  71         ip address del 2001:db8:1::2/64 dev $h1
  72         ip address del 192.0.2.2/24 dev $h1
  73
  74         ip link set dev $h1 down
  75         vrf_destroy "vrf-h1"
  76 }
  77
  78 h2_create()
  79 {
  80         vrf_create "vrf-h2"
  81         ip link set dev $h2 master vrf-h2
  82
  83         ip link set dev vrf-h2 up
  84         ip link set dev $h2 up
  85
  86         ip address add 198.51.100.2/24 dev $h2
  87         ip address add 2001:db8:2::2/64 dev $h2
  88
  89         ip route add 192.0.2.0/24 vrf vrf-h2 nexthop via 198.51.100.1
  90         ip route add 2001:db8:1::/64 vrf vrf-h2 nexthop via 2001:db8:2::1
  91 }
  92
  93 h2_destroy()
  94 {
  95         ip route del 2001:db8:1::/64 vrf vrf-h2
  96         ip route del 192.0.2.0/24 vrf vrf-h2
  97
  98         ip address del 2001:db8:2::2/64 dev $h2
  99         ip address del 198.51.100.2/24 dev $h2
 100
 101         ip link set dev $h2 down
 102         vrf_destroy "vrf-h2"
 103 }
 104
 105 router1_create()
 106 {
 107         vrf_create "vrf-r1"
 108         ip link set dev $rp11 master vrf-r1
 109         ip link set dev $rp12 master vrf-r1
 110         ip link set dev $rp13 master vrf-r1
 111
 112         ip link set dev vrf-r1 up
 113         ip link set dev $rp11 up
 114         ip link set dev $rp12 up
 115         ip link set dev $rp13 up
 116
 117         ip address add 192.0.2.1/24 dev $rp11
 118         ip address add 2001:db8:1::1/64 dev $rp11
 119
 120         ip address add 169.254.2.12/24 dev $rp12
 121         ip address add fe80:2::12/64 dev $rp12
 122
 123         ip address add 169.254.3.13/24 dev $rp13
 124         ip address add fe80:3::13/64 dev $rp13
 125 }
 126
 127 router1_destroy()
 128 {
 129         ip route del 2001:db8:2::/64 vrf vrf-r1
 130         ip route del 198.51.100.0/24 vrf vrf-r1
 131
 132         ip address del fe80:3::13/64 dev $rp13
 133         ip address del 169.254.3.13/24 dev $rp13
 134
 135         ip address del fe80:2::12/64 dev $rp12
 136         ip address del 169.254.2.12/24 dev $rp12
 137
 138         ip address del 2001:db8:1::1/64 dev $rp11
 139         ip address del 192.0.2.1/24 dev $rp11
 140
 141         ip nexthop del id 103
 142         ip nexthop del id 101
 143         ip nexthop del id 102
 144         ip nexthop del id 106
 145         ip nexthop del id 104
 146         ip nexthop del id 105
 147
 148         ip link set dev $rp13 down
 149         ip link set dev $rp12 down
 150         ip link set dev $rp11 down
 151
 152         vrf_destroy "vrf-r1"
 153 }
 154
 155 router2_create()
 156 {
 157         vrf_create "vrf-r2"
 158         ip link set dev $rp21 master vrf-r2
 159         ip link set dev $rp22 master vrf-r2
 160         ip link set dev $rp23 master vrf-r2
 161
 162         ip link set dev vrf-r2 up
 163         ip link set dev $rp21 up
 164         ip link set dev $rp22 up
 165         ip link set dev $rp23 up
 166
 167         ip address add 198.51.100.1/24 dev $rp21
 168         ip address add 2001:db8:2::1/64 dev $rp21
 169
 170         ip address add 169.254.2.22/24 dev $rp22
 171         ip address add fe80:2::22/64 dev $rp22
 172
 173         ip address add 169.254.3.23/24 dev $rp23
 174         ip address add fe80:3::23/64 dev $rp23
 175 }
 176
 177 router2_destroy()
 178 {
 179         ip route del 2001:db8:1::/64 vrf vrf-r2
 180         ip route del 192.0.2.0/24 vrf vrf-r2
 181
 182         ip address del fe80:3::23/64 dev $rp23
 183         ip address del 169.254.3.23/24 dev $rp23
 184
 185         ip address del fe80:2::22/64 dev $rp22
 186         ip address del 169.254.2.22/24 dev $rp22
 187
 188         ip address del 2001:db8:2::1/64 dev $rp21
 189         ip address del 198.51.100.1/24 dev $rp21
 190
 191         ip nexthop del id 201
 192         ip nexthop del id 202
 193         ip nexthop del id 204
 194         ip nexthop del id 205
 195
 196         ip link set dev $rp23 down
 197         ip link set dev $rp22 down
 198         ip link set dev $rp21 down
 199
 200         vrf_destroy "vrf-r2"
 201 }
 202
 203 routing_nh_obj()
 204 {
 205         ip nexthop add id 101 via 169.254.2.22 dev $rp12
 206         ip nexthop add id 102 via 169.254.3.23 dev $rp13
 207         ip nexthop add id 103 group 101/102 type resilient buckets 512 \
 208                 idle_timer 0
 209         ip route add 198.51.100.0/24 vrf vrf-r1 nhid 103
 210
 211         ip nexthop add id 104 via fe80:2::22 dev $rp12
 212         ip nexthop add id 105 via fe80:3::23 dev $rp13
 213         ip nexthop add id 106 group 104/105 type resilient buckets 512 \
 214                 idle_timer 0
 215         ip route add 2001:db8:2::/64 vrf vrf-r1 nhid 106
 216
 217         ip nexthop add id 201 via 169.254.2.12 dev $rp22
 218         ip nexthop add id 202 via 169.254.3.13 dev $rp23
 219         ip nexthop add id 203 group 201/202 type resilient buckets 512 \
 220                 idle_timer 0
 221         ip route add 192.0.2.0/24 vrf vrf-r2 nhid 203
 222
 223         ip nexthop add id 204 via fe80:2::12 dev $rp22
 224         ip nexthop add id 205 via fe80:3::13 dev $rp23
 225         ip nexthop add id 206 group 204/205 type resilient buckets 512 \
 226                 idle_timer 0
 227         ip route add 2001:db8:1::/64 vrf vrf-r2 nhid 206
 228 }
 229
 230 multipath4_test()
 231 {
 232         local desc=$1; shift
 233         local weight_rp12=$1; shift
 234         local weight_rp13=$1; shift
 235         local ports=${1-sp=1024,dp=0-32768}; shift
 236
 237         local t0_rp12 t0_rp13 t1_rp12 t1_rp13
 238         local packets_rp12 packets_rp13
 239
 240         # Transmit multiple flows from h1 to h2 and make sure they are
 241         # distributed between both multipath links (rp12 and rp13)
 242         # according to the provided weights.
 243         sysctl_set net.ipv4.fib_multipath_hash_policy 1
 244
 245         t0_rp12=$(link_stats_tx_packets_get $rp12)
 246         t0_rp13=$(link_stats_tx_packets_get $rp13)
 247
 248         ip vrf exec vrf-h1 $MZ $h1 -q -p 64 -A 192.0.2.2 -B 198.51.100.2 \
 249                 -d $MZ_DELAY -t udp "$ports"
 250         sleep 1
 251
 252         t1_rp12=$(link_stats_tx_packets_get $rp12)
 253         t1_rp13=$(link_stats_tx_packets_get $rp13)
 254
 255         let "packets_rp12 = $t1_rp12 - $t0_rp12"
 256         let "packets_rp13 = $t1_rp13 - $t0_rp13"
 257         multipath_eval "$desc" $weight_rp12 $weight_rp13 $packets_rp12 $packets_rp13
 258
 259         # Restore settings.
 260         sysctl_restore net.ipv4.fib_multipath_hash_policy
 261 }
 262
 263 multipath6_l4_test()
 264 {
 265         local desc=$1; shift
 266         local weight_rp12=$1; shift
 267         local weight_rp13=$1; shift
 268         local ports=${1-sp=1024,dp=0-32768}; shift
 269
 270         local t0_rp12 t0_rp13 t1_rp12 t1_rp13
 271         local packets_rp12 packets_rp13
 272
 273         # Transmit multiple flows from h1 to h2 and make sure they are
 274         # distributed between both multipath links (rp12 and rp13)
 275         # according to the provided weights.
 276         sysctl_set net.ipv6.fib_multipath_hash_policy 1
 277
 278         t0_rp12=$(link_stats_tx_packets_get $rp12)
 279         t0_rp13=$(link_stats_tx_packets_get $rp13)
 280
 281         $MZ $h1 -6 -q -p 64 -A 2001:db8:1::2 -B 2001:db8:2::2 \
 282                 -d $MZ_DELAY -t udp "$ports"
 283         sleep 1
 284
 285         t1_rp12=$(link_stats_tx_packets_get $rp12)
 286         t1_rp13=$(link_stats_tx_packets_get $rp13)
 287
 288         let "packets_rp12 = $t1_rp12 - $t0_rp12"
 289         let "packets_rp13 = $t1_rp13 - $t0_rp13"
 290         multipath_eval "$desc" $weight_rp12 $weight_rp13 $packets_rp12 $packets_rp13
 291
 292         sysctl_restore net.ipv6.fib_multipath_hash_policy
 293 }
 294
 295 multipath_test()
 296 {
 297         # Without an idle timer, weight replacement should happen immediately.
 298         log_info "Running multipath tests without an idle timer"
 299         ip nexthop replace id 103 group 101/102 type resilient idle_timer 0
 300         ip nexthop replace id 106 group 104/105 type resilient idle_timer 0
 301
 302         log_info "Running IPv4 multipath tests"
 303         ip nexthop replace id 103 group 101,1/102,1 type resilient
 304         multipath4_test "ECMP" 1 1
 305         ip nexthop replace id 103 group 101,2/102,1 type resilient
 306         multipath4_test "Weighted MP 2:1" 2 1
 307         ip nexthop replace id 103 group 101,11/102,45 type resilient
 308         multipath4_test "Weighted MP 11:45" 11 45
 309
 310         ip nexthop replace id 103 group 101,1/102,1 type resilient
 311
 312         log_info "Running IPv6 L4 hash multipath tests"
 313         ip nexthop replace id 106 group 104,1/105,1 type resilient
 314         multipath6_l4_test "ECMP" 1 1
 315         ip nexthop replace id 106 group 104,2/105,1 type resilient
 316         multipath6_l4_test "Weighted MP 2:1" 2 1
 317         ip nexthop replace id 106 group 104,11/105,45 type resilient
 318         multipath6_l4_test "Weighted MP 11:45" 11 45
 319
 320         ip nexthop replace id 106 group 104,1/105,1 type resilient
 321
 322         # With an idle timer, weight replacement should not happen, so the
 323         # expected ratio should always be the initial one (1:1).
 324         log_info "Running multipath tests with an idle timer of 120 seconds"
 325         ip nexthop replace id 103 group 101/102 type resilient idle_timer 120
 326         ip nexthop replace id 106 group 104/105 type resilient idle_timer 120
 327
 328         log_info "Running IPv4 multipath tests"
 329         ip nexthop replace id 103 group 101,1/102,1 type resilient
 330         multipath4_test "ECMP" 1 1
 331         ip nexthop replace id 103 group 101,2/102,1 type resilient
 332         multipath4_test "Weighted MP 2:1" 1 1
 333         ip nexthop replace id 103 group 101,11/102,45 type resilient
 334         multipath4_test "Weighted MP 11:45" 1 1
 335
 336         ip nexthop replace id 103 group 101,1/102,1 type resilient
 337
 338         log_info "Running IPv6 L4 hash multipath tests"
 339         ip nexthop replace id 106 group 104,1/105,1 type resilient
 340         multipath6_l4_test "ECMP" 1 1
 341         ip nexthop replace id 106 group 104,2/105,1 type resilient
 342         multipath6_l4_test "Weighted MP 2:1" 1 1
 343         ip nexthop replace id 106 group 104,11/105,45 type resilient
 344         multipath6_l4_test "Weighted MP 11:45" 1 1
 345
 346         ip nexthop replace id 106 group 104,1/105,1 type resilient
 347
 348         # With a short idle timer and enough idle time, weight replacement
 349         # should happen.
 350         log_info "Running multipath tests with an idle timer of 5 seconds"
 351         ip nexthop replace id 103 group 101/102 type resilient idle_timer 5
 352         ip nexthop replace id 106 group 104/105 type resilient idle_timer 5
 353
 354         log_info "Running IPv4 multipath tests"
 355         sleep 10
 356         ip nexthop replace id 103 group 101,1/102,1 type resilient
 357         multipath4_test "ECMP" 1 1
 358         sleep 10
 359         ip nexthop replace id 103 group 101,2/102,1 type resilient
 360         multipath4_test "Weighted MP 2:1" 2 1
 361         sleep 10
 362         ip nexthop replace id 103 group 101,11/102,45 type resilient
 363         multipath4_test "Weighted MP 11:45" 11 45
 364
 365         ip nexthop replace id 103 group 101,1/102,1 type resilient
 366
 367         log_info "Running IPv6 L4 hash multipath tests"
 368         sleep 10
 369         ip nexthop replace id 106 group 104,1/105,1 type resilient
 370         multipath6_l4_test "ECMP" 1 1
 371         sleep 10
 372         ip nexthop replace id 106 group 104,2/105,1 type resilient
 373         multipath6_l4_test "Weighted MP 2:1" 2 1
 374         sleep 10
 375         ip nexthop replace id 106 group 104,11/105,45 type resilient
 376         multipath6_l4_test "Weighted MP 11:45" 11 45
 377
 378         ip nexthop replace id 106 group 104,1/105,1 type resilient
 379 }
 380
 381 multipath16_test()
 382 {
 383         check_nhgw16 104 || return
 384
 385         log_info "Running 16-bit IPv4 multipath tests"
 386         ip nexthop replace id 103 group 101/102 type resilient idle_timer 0
 387
 388         ip nexthop replace id 103 group 101,65535/102,65535 type resilient
 389         multipath4_test "65535:65535" 65535 65535
 390
 391         ip nexthop replace id 103 group 101,128/102,512 type resilient
 392         multipath4_test "128:512" 128 512
 393
 394         ip nexthop replace id 103 group 101,255/102,65535 type resilient
 395         omit_on_slow \
 396                 multipath4_test "255:65535" 255 65535 sp=1024-1026,dp=0-65535
 397
 398         ip nexthop replace id 103 group 101,1/102,1 type resilient
 399
 400         log_info "Running 16-bit IPv6 L4 hash multipath tests"
 401         ip nexthop replace id 106 group 104/105 type resilient idle_timer 0
 402
 403         ip nexthop replace id 106 group 104,65535/105,65535 type resilient
 404         multipath6_l4_test "65535:65535" 65535 65535
 405
 406         ip nexthop replace id 106 group 104,128/105,512 type resilient
 407         multipath6_l4_test "128:512" 128 512
 408
 409         ip nexthop replace id 106 group 104,255/105,65535 type resilient
 410         omit_on_slow \
 411                 multipath6_l4_test "255:65535" 255 65535 sp=1024-1026,dp=0-65535
 412
 413         ip nexthop replace id 106 group 104,1/105,1 type resilient
 414 }
 415
 416 nh_stats_test_v4()
 417 {
 418         __nh_stats_test_v4 resilient
 419 }
 420
 421 nh_stats_test_v6()
 422 {
 423         __nh_stats_test_v6 resilient
 424 }
 425
 426 setup_prepare()
 427 {
 428         h1=${NETIFS[p1]}
 429         rp11=${NETIFS[p2]}
 430
 431         rp12=${NETIFS[p3]}
 432         rp22=${NETIFS[p4]}
 433
 434         rp13=${NETIFS[p5]}
 435         rp23=${NETIFS[p6]}
 436
 437         rp21=${NETIFS[p7]}
 438         h2=${NETIFS[p8]}
 439
 440         vrf_prepare
 441
 442         h1_create
 443         h2_create
 444
 445         router1_create
 446         router2_create
 447
 448         forwarding_enable
 449 }
 450
 451 cleanup()
 452 {
 453         pre_cleanup
 454
 455         forwarding_restore
 456
 457         router2_destroy
 458         router1_destroy
 459
 460         h2_destroy
 461         h1_destroy
 462
 463         vrf_cleanup
 464 }
 465
 466 ping_ipv4()
 467 {
 468         ping_test $h1 198.51.100.2
 469 }
 470
 471 ping_ipv6()
 472 {
 473         ping6_test $h1 2001:db8:2::2
 474 }
 475
 476 ip nexthop ls >/dev/null 2>&1
 477 if [ $? -ne 0 ]; then
 478         echo "Nexthop objects not supported; skipping tests"
 479         exit $ksft_skip
 480 fi
 481
 482 trap cleanup EXIT
 483
 484 setup_prepare
 485 setup_wait
 486 routing_nh_obj
 487
 488 tests_run
 489
 490 exit $EXIT_STATUS