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

   1 #!/bin/bash
   2 # SPDX-License-Identifier: GPL-2.0
   3
   4 # +------------------+
   5 # | H1 (v$h1)        |
   6 # | 2001:db8:1::2/64 |
   7 # | 198.51.100.2/28  |
   8 # |         $h1 +    |
   9 # +-------------|----+
  10 #               |
  11 # +-------------|-------------------------------+
  12 # | SW1         |                               |
  13 # |        $rp1 +                               |
  14 # | 198.51.100.1/28                             |
  15 # | 2001:db8:1::1/64                            |
  16 # |                                             |
  17 # | 2001:db8:2::1/64           2001:db8:3::1/64 |
  18 # | 198.51.100.17/28           198.51.100.33/28 |
  19 # |         $rp2 +                     $rp3 +   |
  20 # +--------------|--------------------------|---+
  21 #                |                          |
  22 #                |                          |
  23 # +--------------|---+       +--------------|---+
  24 # | H2 (v$h2)    |   |       | H3 (v$h3)    |   |
  25 # |          $h2 +   |       |          $h3 +   |
  26 # | 198.51.100.18/28 |       | 198.51.100.34/28 |
  27 # | 2001:db8:2::2/64 |       | 2001:db8:3::2/64 |
  28 # +------------------+       +------------------+
  29 #
  30
  31 ALL_TESTS="mcast_v4 mcast_v6 rpf_v4 rpf_v6"
  32 NUM_NETIFS=6
  33 source lib.sh
  34 source tc_common.sh
  35
  36 require_command $MCD
  37 require_command $MC_CLI
  38 table_name=selftests
  39
  40 h1_create()
  41 {
  42         simple_if_init $h1 198.51.100.2/28 2001:db8:1::2/64
  43
  44         ip route add 198.51.100.16/28 vrf v$h1 nexthop via 198.51.100.1
  45         ip route add 198.51.100.32/28 vrf v$h1 nexthop via 198.51.100.1
  46
  47         ip route add 2001:db8:2::/64 vrf v$h1 nexthop via 2001:db8:1::1
  48         ip route add 2001:db8:3::/64 vrf v$h1 nexthop via 2001:db8:1::1
  49
  50         tc qdisc add dev $h1 ingress
  51 }
  52
  53 h1_destroy()
  54 {
  55         tc qdisc del dev $h1 ingress
  56
  57         ip route del 2001:db8:3::/64 vrf v$h1
  58         ip route del 2001:db8:2::/64 vrf v$h1
  59
  60         ip route del 198.51.100.32/28 vrf v$h1
  61         ip route del 198.51.100.16/28 vrf v$h1
  62
  63         simple_if_fini $h1 198.51.100.2/28 2001:db8:1::2/64
  64 }
  65
  66 h2_create()
  67 {
  68         simple_if_init $h2 198.51.100.18/28 2001:db8:2::2/64
  69
  70         ip route add 198.51.100.0/28 vrf v$h2 nexthop via 198.51.100.17
  71         ip route add 198.51.100.32/28 vrf v$h2 nexthop via 198.51.100.17
  72
  73         ip route add 2001:db8:1::/64 vrf v$h2 nexthop via 2001:db8:2::1
  74         ip route add 2001:db8:3::/64 vrf v$h2 nexthop via 2001:db8:2::1
  75
  76         tc qdisc add dev $h2 ingress
  77 }
  78
  79 h2_destroy()
  80 {
  81         tc qdisc del dev $h2 ingress
  82
  83         ip route del 2001:db8:3::/64 vrf v$h2
  84         ip route del 2001:db8:1::/64 vrf v$h2
  85
  86         ip route del 198.51.100.32/28 vrf v$h2
  87         ip route del 198.51.100.0/28 vrf v$h2
  88
  89         simple_if_fini $h2 198.51.100.18/28 2001:db8:2::2/64
  90 }
  91
  92 h3_create()
  93 {
  94         simple_if_init $h3 198.51.100.34/28 2001:db8:3::2/64
  95
  96         ip route add 198.51.100.0/28 vrf v$h3 nexthop via 198.51.100.33
  97         ip route add 198.51.100.16/28 vrf v$h3 nexthop via 198.51.100.33
  98
  99         ip route add 2001:db8:1::/64 vrf v$h3 nexthop via 2001:db8:3::1
 100         ip route add 2001:db8:2::/64 vrf v$h3 nexthop via 2001:db8:3::1
 101
 102         tc qdisc add dev $h3 ingress
 103 }
 104
 105 h3_destroy()
 106 {
 107         tc qdisc del dev $h3 ingress
 108
 109         ip route del 2001:db8:2::/64 vrf v$h3
 110         ip route del 2001:db8:1::/64 vrf v$h3
 111
 112         ip route del 198.51.100.16/28 vrf v$h3
 113         ip route del 198.51.100.0/28 vrf v$h3
 114
 115         simple_if_fini $h3 198.51.100.34/28 2001:db8:3::2/64
 116 }
 117
 118 router_create()
 119 {
 120         ip link set dev $rp1 up
 121         ip link set dev $rp2 up
 122         ip link set dev $rp3 up
 123
 124         ip address add 198.51.100.1/28 dev $rp1
 125         ip address add 198.51.100.17/28 dev $rp2
 126         ip address add 198.51.100.33/28 dev $rp3
 127
 128         ip address add 2001:db8:1::1/64 dev $rp1
 129         ip address add 2001:db8:2::1/64 dev $rp2
 130         ip address add 2001:db8:3::1/64 dev $rp3
 131
 132         tc qdisc add dev $rp3 ingress
 133 }
 134
 135 router_destroy()
 136 {
 137         tc qdisc del dev $rp3 ingress
 138
 139         ip address del 2001:db8:3::1/64 dev $rp3
 140         ip address del 2001:db8:2::1/64 dev $rp2
 141         ip address del 2001:db8:1::1/64 dev $rp1
 142
 143         ip address del 198.51.100.33/28 dev $rp3
 144         ip address del 198.51.100.17/28 dev $rp2
 145         ip address del 198.51.100.1/28 dev $rp1
 146
 147         ip link set dev $rp3 down
 148         ip link set dev $rp2 down
 149         ip link set dev $rp1 down
 150 }
 151
 152 start_mcd()
 153 {
 154         SMCROUTEDIR="$(mktemp -d)"
 155
 156         for ((i = 1; i <= $NUM_NETIFS; ++i)); do
 157                 echo "phyint ${NETIFS[p$i]} enable" >> \
 158                         $SMCROUTEDIR/$table_name.conf
 159         done
 160
 161         $MCD -N -I $table_name -f $SMCROUTEDIR/$table_name.conf \
 162                 -P $SMCROUTEDIR/$table_name.pid
 163 }
 164
 165 kill_mcd()
 166 {
 167         pkill $MCD
 168         rm -rf $SMCROUTEDIR
 169 }
 170
 171 setup_prepare()
 172 {
 173         h1=${NETIFS[p1]}
 174         rp1=${NETIFS[p2]}
 175
 176         rp2=${NETIFS[p3]}
 177         h2=${NETIFS[p4]}
 178
 179         rp3=${NETIFS[p5]}
 180         h3=${NETIFS[p6]}
 181
 182         start_mcd
 183
 184         vrf_prepare
 185
 186         h1_create
 187         h2_create
 188         h3_create
 189
 190         router_create
 191
 192         forwarding_enable
 193 }
 194
 195 cleanup()
 196 {
 197         pre_cleanup
 198
 199         forwarding_restore
 200
 201         router_destroy
 202
 203         h3_destroy
 204         h2_destroy
 205         h1_destroy
 206
 207         vrf_cleanup
 208
 209         kill_mcd
 210 }
 211
 212 create_mcast_sg()
 213 {
 214         local if_name=$1; shift
 215         local s_addr=$1; shift
 216         local mcast=$1; shift
 217         local dest_ifs=${@}
 218
 219         $MC_CLI -I $table_name add $if_name $s_addr $mcast $dest_ifs
 220 }
 221
 222 delete_mcast_sg()
 223 {
 224         local if_name=$1; shift
 225         local s_addr=$1; shift
 226         local mcast=$1; shift
 227         local dest_ifs=${@}
 228
 229         $MC_CLI -I $table_name remove $if_name $s_addr $mcast $dest_ifs
 230 }
 231
 232 mcast_v4()
 233 {
 234         # Add two interfaces to an MC group, send a packet to the MC group and
 235         # verify packets are received on both. Then delete the route and verify
 236         # packets are no longer received.
 237
 238         RET=0
 239
 240         tc filter add dev $h2 ingress protocol ip pref 1 handle 122 flower \
 241                 dst_ip 225.1.2.3 action drop
 242         tc filter add dev $h3 ingress protocol ip pref 1 handle 133 flower \
 243                 dst_ip 225.1.2.3 action drop
 244
 245         create_mcast_sg $rp1 198.51.100.2 225.1.2.3 $rp2 $rp3
 246
 247         # Send frames with the corresponding L2 destination address.
 248         $MZ $h1 -c 5 -p 128 -t udp -a 00:11:22:33:44:55 -b 01:00:5e:01:02:03 \
 249                 -A 198.51.100.2 -B 225.1.2.3 -q
 250
 251         tc_check_packets "dev $h2 ingress" 122 5
 252         check_err $? "Multicast not received on first host"
 253         tc_check_packets "dev $h3 ingress" 133 5
 254         check_err $? "Multicast not received on second host"
 255
 256         delete_mcast_sg $rp1 198.51.100.2 225.1.2.3 $rp2 $rp3
 257
 258         $MZ $h1 -c 5 -p 128 -t udp -a 00:11:22:33:44:55 -b 01:00:5e:01:02:03 \
 259                 -A 198.51.100.2 -B 225.1.2.3 -q
 260
 261         tc_check_packets "dev $h2 ingress" 122 5
 262         check_err $? "Multicast received on host although deleted"
 263         tc_check_packets "dev $h3 ingress" 133 5
 264         check_err $? "Multicast received on second host although deleted"
 265
 266         tc filter del dev $h3 ingress protocol ip pref 1 handle 133 flower
 267         tc filter del dev $h2 ingress protocol ip pref 1 handle 122 flower
 268
 269         log_test "mcast IPv4"
 270 }
 271
 272 mcast_v6()
 273 {
 274         # Add two interfaces to an MC group, send a packet to the MC group and
 275         # verify packets are received on both. Then delete the route and verify
 276         # packets are no longer received.
 277
 278         RET=0
 279
 280         tc filter add dev $h2 ingress protocol ipv6 pref 1 handle 122 flower \
 281                 dst_ip ff0e::3 action drop
 282         tc filter add dev $h3 ingress protocol ipv6 pref 1 handle 133 flower \
 283                 dst_ip ff0e::3 action drop
 284
 285         create_mcast_sg $rp1 2001:db8:1::2 ff0e::3 $rp2 $rp3
 286
 287         # Send frames with the corresponding L2 destination address.
 288         $MZ $h1 -6 -c 5 -p 128 -t udp -a 00:11:22:33:44:55 \
 289                 -b 33:33:00:00:00:03 -A 2001:db8:1::2 -B ff0e::3 -q
 290
 291         tc_check_packets "dev $h2 ingress" 122 5
 292         check_err $? "Multicast not received on first host"
 293         tc_check_packets "dev $h3 ingress" 133 5
 294         check_err $? "Multicast not received on second host"
 295
 296         delete_mcast_sg $rp1 2001:db8:1::2 ff0e::3 $rp2 $rp3
 297
 298         $MZ $h1 -6 -c 5 -p 128 -t udp -a 00:11:22:33:44:55 \
 299                 -b 33:33:00:00:00:03 -A 2001:db8:1::2 -B ff0e::3 -q
 300
 301         tc_check_packets "dev $h2 ingress" 122 5
 302         check_err $? "Multicast received on first host although deleted"
 303         tc_check_packets "dev $h3 ingress" 133 5
 304         check_err $? "Multicast received on second host although deleted"
 305
 306         tc filter del dev $h3 ingress protocol ipv6 pref 1 handle 133 flower
 307         tc filter del dev $h2 ingress protocol ipv6 pref 1 handle 122 flower
 308
 309         log_test "mcast IPv6"
 310 }
 311
 312 rpf_v4()
 313 {
 314         # Add a multicast route from first router port to the other two. Send
 315         # matching packets and test that both hosts receive them. Then, send
 316         # the same packets via the third router port and test that they do not
 317         # reach any host due to RPF check. A filter with 'skip_hw' is added to
 318         # test that devices capable of multicast routing offload trap those
 319         # packets. The filter is essentialy a NOP in other scenarios.
 320
 321         RET=0
 322
 323         tc filter add dev $h1 ingress protocol ip pref 1 handle 1 flower \
 324                 dst_ip 225.1.2.3 ip_proto udp dst_port 12345 action drop
 325         tc filter add dev $h2 ingress protocol ip pref 1 handle 1 flower \
 326                 dst_ip 225.1.2.3 ip_proto udp dst_port 12345 action drop
 327         tc filter add dev $h3 ingress protocol ip pref 1 handle 1 flower \
 328                 dst_ip 225.1.2.3 ip_proto udp dst_port 12345 action drop
 329         tc filter add dev $rp3 ingress protocol ip pref 1 handle 1 flower \
 330                 skip_hw dst_ip 225.1.2.3 ip_proto udp dst_port 12345 action pass
 331
 332         create_mcast_sg $rp1 198.51.100.2 225.1.2.3 $rp2 $rp3
 333
 334         $MZ $h1 -c 5 -p 128 -t udp "ttl=10,sp=54321,dp=12345" \
 335                 -a 00:11:22:33:44:55 -b 01:00:5e:01:02:03 \
 336                 -A 198.51.100.2 -B 225.1.2.3 -q
 337
 338         tc_check_packets "dev $h2 ingress" 1 5
 339         check_err $? "Multicast not received on first host"
 340         tc_check_packets "dev $h3 ingress" 1 5
 341         check_err $? "Multicast not received on second host"
 342
 343         $MZ $h3 -c 5 -p 128 -t udp "ttl=10,sp=54321,dp=12345" \
 344                 -a 00:11:22:33:44:55 -b 01:00:5e:01:02:03 \
 345                 -A 198.51.100.2 -B 225.1.2.3 -q
 346
 347         tc_check_packets "dev $h1 ingress" 1 0
 348         check_err $? "Multicast received on first host when should not"
 349         tc_check_packets "dev $h2 ingress" 1 5
 350         check_err $? "Multicast received on second host when should not"
 351         tc_check_packets "dev $rp3 ingress" 1 5
 352         check_err $? "Packets not trapped due to RPF check"
 353
 354         delete_mcast_sg $rp1 198.51.100.2 225.1.2.3 $rp2 $rp3
 355
 356         tc filter del dev $rp3 ingress protocol ip pref 1 handle 1 flower
 357         tc filter del dev $h3 ingress protocol ip pref 1 handle 1 flower
 358         tc filter del dev $h2 ingress protocol ip pref 1 handle 1 flower
 359         tc filter del dev $h1 ingress protocol ip pref 1 handle 1 flower
 360
 361         log_test "RPF IPv4"
 362 }
 363
 364 rpf_v6()
 365 {
 366         RET=0
 367
 368         tc filter add dev $h1 ingress protocol ipv6 pref 1 handle 1 flower \
 369                 dst_ip ff0e::3 ip_proto udp dst_port 12345 action drop
 370         tc filter add dev $h2 ingress protocol ipv6 pref 1 handle 1 flower \
 371                 dst_ip ff0e::3 ip_proto udp dst_port 12345 action drop
 372         tc filter add dev $h3 ingress protocol ipv6 pref 1 handle 1 flower \
 373                 dst_ip ff0e::3 ip_proto udp dst_port 12345 action drop
 374         tc filter add dev $rp3 ingress protocol ipv6 pref 1 handle 1 flower \
 375                 skip_hw dst_ip ff0e::3 ip_proto udp dst_port 12345 action pass
 376
 377         create_mcast_sg $rp1 2001:db8:1::2 ff0e::3 $rp2 $rp3
 378
 379         $MZ $h1 -6 -c 5 -p 128 -t udp "ttl=10,sp=54321,dp=12345" \
 380                 -a 00:11:22:33:44:55 -b 33:33:00:00:00:03 \
 381                 -A 2001:db8:1::2 -B ff0e::3 -q
 382
 383         tc_check_packets "dev $h2 ingress" 1 5
 384         check_err $? "Multicast not received on first host"
 385         tc_check_packets "dev $h3 ingress" 1 5
 386         check_err $? "Multicast not received on second host"
 387
 388         $MZ $h3 -6 -c 5 -p 128 -t udp "ttl=10,sp=54321,dp=12345" \
 389                 -a 00:11:22:33:44:55 -b 33:33:00:00:00:03 \
 390                 -A 2001:db8:1::2 -B ff0e::3 -q
 391
 392         tc_check_packets "dev $h1 ingress" 1 0
 393         check_err $? "Multicast received on first host when should not"
 394         tc_check_packets "dev $h2 ingress" 1 5
 395         check_err $? "Multicast received on second host when should not"
 396         tc_check_packets "dev $rp3 ingress" 1 5
 397         check_err $? "Packets not trapped due to RPF check"
 398
 399         delete_mcast_sg $rp1 2001:db8:1::2 ff0e::3 $rp2 $rp3
 400
 401         tc filter del dev $rp3 ingress protocol ipv6 pref 1 handle 1 flower
 402         tc filter del dev $h3 ingress protocol ipv6 pref 1 handle 1 flower
 403         tc filter del dev $h2 ingress protocol ipv6 pref 1 handle 1 flower
 404         tc filter del dev $h1 ingress protocol ipv6 pref 1 handle 1 flower
 405
 406         log_test "RPF IPv6"
 407 }
 408
 409 trap cleanup EXIT
 410
 411 setup_prepare
 412 setup_wait
 413
 414 tests_run
 415
 416 exit $EXIT_STATUS