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0001 #!/bin/bash
0002 # SPDX-License-Identifier: GPL-2.0
0003 #
0004 # Test that packets are sampled when tc-sample is used and that reported
0005 # metadata is correct. Two sets of hosts (with and without LAG) are used, since
0006 # metadata extraction in mlxsw is a bit different when LAG is involved.
0007 #
0008 # +---------------------------------+       +---------------------------------+
0009 # | H1 (vrf)                        |       | H3 (vrf)                        |
0010 # |    + $h1                        |       |    + $h3_lag                    |
0011 # |    | 192.0.2.1/28               |       |    | 192.0.2.17/28              |
0012 # |    |                            |       |    |                            |
0013 # |    |  default via 192.0.2.2     |       |    |  default via 192.0.2.18    |
0014 # +----|----------------------------+       +----|----------------------------+
0015 #      |                                         |
0016 # +----|-----------------------------------------|----------------------------+
0017 # |    | 192.0.2.2/28                            | 192.0.2.18/28              |
0018 # |    + $rp1                                    + $rp3_lag                   |
0019 # |                                                                           |
0020 # |    + $rp2                                    + $rp4_lag                   |
0021 # |    | 198.51.100.2/28                         | 198.51.100.18/28           |
0022 # +----|-----------------------------------------|----------------------------+
0023 #      |                                         |
0024 # +----|----------------------------+       +----|----------------------------+
0025 # |    |  default via 198.51.100.2  |       |    |  default via 198.51.100.18 |
0026 # |    |                            |       |    |                            |
0027 # |    | 198.51.100.1/28            |       |    | 198.51.100.17/28           |
0028 # |    + $h2                        |       |    + $h4_lag                    |
0029 # | H2 (vrf)                        |       | H4 (vrf)                        |
0030 # +---------------------------------+       +---------------------------------+
0031 
0032 lib_dir=$(dirname $0)/../../../net/forwarding
0033 
0034 ALL_TESTS="
0035         tc_sample_rate_test
0036         tc_sample_max_rate_test
0037         tc_sample_conflict_test
0038         tc_sample_group_conflict_test
0039         tc_sample_md_iif_test
0040         tc_sample_md_lag_iif_test
0041         tc_sample_md_oif_test
0042         tc_sample_md_lag_oif_test
0043         tc_sample_md_out_tc_test
0044         tc_sample_md_out_tc_occ_test
0045         tc_sample_md_latency_test
0046         tc_sample_acl_group_conflict_test
0047         tc_sample_acl_rate_test
0048         tc_sample_acl_max_rate_test
0049 "
0050 NUM_NETIFS=8
0051 CAPTURE_FILE=$(mktemp)
0052 source $lib_dir/lib.sh
0053 source $lib_dir/devlink_lib.sh
0054 source mlxsw_lib.sh
0055 
0056 # Available at https://github.com/Mellanox/libpsample
0057 require_command psample
0058 
0059 h1_create()
0060 {
0061         simple_if_init $h1 192.0.2.1/28
0062 
0063         ip -4 route add default vrf v$h1 nexthop via 192.0.2.2
0064 }
0065 
0066 h1_destroy()
0067 {
0068         ip -4 route del default vrf v$h1 nexthop via 192.0.2.2
0069 
0070         simple_if_fini $h1 192.0.2.1/28
0071 }
0072 
0073 h2_create()
0074 {
0075         simple_if_init $h2 198.51.100.1/28
0076 
0077         ip -4 route add default vrf v$h2 nexthop via 198.51.100.2
0078 }
0079 
0080 h2_destroy()
0081 {
0082         ip -4 route del default vrf v$h2 nexthop via 198.51.100.2
0083 
0084         simple_if_fini $h2 198.51.100.1/28
0085 }
0086 
0087 h3_create()
0088 {
0089         ip link set dev $h3 down
0090         ip link add name ${h3}_bond type bond mode 802.3ad
0091         ip link set dev $h3 master ${h3}_bond
0092 
0093         simple_if_init ${h3}_bond 192.0.2.17/28
0094 
0095         ip -4 route add default vrf v${h3}_bond nexthop via 192.0.2.18
0096 }
0097 
0098 h3_destroy()
0099 {
0100         ip -4 route del default vrf v${h3}_bond nexthop via 192.0.2.18
0101 
0102         simple_if_fini ${h3}_bond 192.0.2.17/28
0103 
0104         ip link set dev $h3 nomaster
0105         ip link del dev ${h3}_bond
0106 }
0107 
0108 h4_create()
0109 {
0110         ip link set dev $h4 down
0111         ip link add name ${h4}_bond type bond mode 802.3ad
0112         ip link set dev $h4 master ${h4}_bond
0113 
0114         simple_if_init ${h4}_bond 198.51.100.17/28
0115 
0116         ip -4 route add default vrf v${h4}_bond nexthop via 198.51.100.18
0117 }
0118 
0119 h4_destroy()
0120 {
0121         ip -4 route del default vrf v${h4}_bond nexthop via 198.51.100.18
0122 
0123         simple_if_fini ${h4}_bond 198.51.100.17/28
0124 
0125         ip link set dev $h4 nomaster
0126         ip link del dev ${h4}_bond
0127 }
0128 
0129 router_create()
0130 {
0131         ip link set dev $rp1 up
0132         __addr_add_del $rp1 add 192.0.2.2/28
0133         tc qdisc add dev $rp1 clsact
0134 
0135         ip link set dev $rp2 up
0136         __addr_add_del $rp2 add 198.51.100.2/28
0137         tc qdisc add dev $rp2 clsact
0138 
0139         ip link add name ${rp3}_bond type bond mode 802.3ad
0140         ip link set dev $rp3 master ${rp3}_bond
0141         __addr_add_del ${rp3}_bond add 192.0.2.18/28
0142         tc qdisc add dev $rp3 clsact
0143         ip link set dev ${rp3}_bond up
0144 
0145         ip link add name ${rp4}_bond type bond mode 802.3ad
0146         ip link set dev $rp4 master ${rp4}_bond
0147         __addr_add_del ${rp4}_bond add 198.51.100.18/28
0148         tc qdisc add dev $rp4 clsact
0149         ip link set dev ${rp4}_bond up
0150 }
0151 
0152 router_destroy()
0153 {
0154         ip link set dev ${rp4}_bond down
0155         tc qdisc del dev $rp4 clsact
0156         __addr_add_del ${rp4}_bond del 198.51.100.18/28
0157         ip link set dev $rp4 nomaster
0158         ip link del dev ${rp4}_bond
0159 
0160         ip link set dev ${rp3}_bond down
0161         tc qdisc del dev $rp3 clsact
0162         __addr_add_del ${rp3}_bond del 192.0.2.18/28
0163         ip link set dev $rp3 nomaster
0164         ip link del dev ${rp3}_bond
0165 
0166         tc qdisc del dev $rp2 clsact
0167         __addr_add_del $rp2 del 198.51.100.2/28
0168         ip link set dev $rp2 down
0169 
0170         tc qdisc del dev $rp1 clsact
0171         __addr_add_del $rp1 del 192.0.2.2/28
0172         ip link set dev $rp1 down
0173 }
0174 
0175 setup_prepare()
0176 {
0177         h1=${NETIFS[p1]}
0178         rp1=${NETIFS[p2]}
0179         rp2=${NETIFS[p3]}
0180         h2=${NETIFS[p4]}
0181         h3=${NETIFS[p5]}
0182         rp3=${NETIFS[p6]}
0183         h4=${NETIFS[p7]}
0184         rp4=${NETIFS[p8]}
0185 
0186         vrf_prepare
0187 
0188         h1_create
0189         h2_create
0190         h3_create
0191         h4_create
0192         router_create
0193 }
0194 
0195 cleanup()
0196 {
0197         pre_cleanup
0198 
0199         rm -f $CAPTURE_FILE
0200 
0201         router_destroy
0202         h4_destroy
0203         h3_destroy
0204         h2_destroy
0205         h1_destroy
0206 
0207         vrf_cleanup
0208 }
0209 
0210 psample_capture_start()
0211 {
0212         rm -f $CAPTURE_FILE
0213 
0214         psample &> $CAPTURE_FILE &
0215 
0216         sleep 1
0217 }
0218 
0219 psample_capture_stop()
0220 {
0221         { kill %% && wait %%; } 2>/dev/null
0222 }
0223 
0224 __tc_sample_rate_test()
0225 {
0226         local desc=$1; shift
0227         local dip=$1; shift
0228         local pkts pct
0229 
0230         RET=0
0231 
0232         tc filter add dev $rp1 ingress protocol all pref 1 handle 101 matchall \
0233                 skip_sw action sample rate 32 group 1
0234         check_err $? "Failed to configure sampling rule"
0235 
0236         psample_capture_start
0237 
0238         ip vrf exec v$h1 $MZ $h1 -c 320000 -d 100usec -p 64 -A 192.0.2.1 \
0239                 -B $dip -t udp dp=52768,sp=42768 -q
0240 
0241         psample_capture_stop
0242 
0243         pkts=$(grep -e "group 1 " $CAPTURE_FILE | wc -l)
0244         pct=$((100 * (pkts - 10000) / 10000))
0245         (( -25 <= pct && pct <= 25))
0246         check_err $? "Expected 10000 packets, got $pkts packets, which is $pct% off. Required accuracy is +-25%"
0247 
0248         log_test "tc sample rate ($desc)"
0249 
0250         tc filter del dev $rp1 ingress protocol all pref 1 handle 101 matchall
0251 }
0252 
0253 tc_sample_rate_test()
0254 {
0255         __tc_sample_rate_test "forward" 198.51.100.1
0256         __tc_sample_rate_test "local receive" 192.0.2.2
0257 }
0258 
0259 tc_sample_max_rate_test()
0260 {
0261         RET=0
0262 
0263         tc filter add dev $rp1 ingress protocol all pref 1 handle 101 matchall \
0264                 skip_sw action sample rate $((35 * 10 ** 8)) group 1
0265         check_err $? "Failed to configure sampling rule with max rate"
0266 
0267         tc filter del dev $rp1 ingress protocol all pref 1 handle 101 matchall
0268 
0269         tc filter add dev $rp1 ingress protocol all pref 1 handle 101 matchall \
0270                 skip_sw action sample rate $((35 * 10 ** 8 + 1)) \
0271                 group 1 &> /dev/null
0272         check_fail $? "Managed to configure sampling rate above maximum"
0273 
0274         log_test "tc sample maximum rate"
0275 }
0276 
0277 tc_sample_conflict_test()
0278 {
0279         RET=0
0280 
0281         # Test that two sampling rules cannot be configured on the same port,
0282         # even when they share the same parameters.
0283 
0284         tc filter add dev $rp1 ingress protocol all pref 1 handle 101 matchall \
0285                 skip_sw action sample rate 1024 group 1
0286         check_err $? "Failed to configure sampling rule"
0287 
0288         tc filter add dev $rp1 ingress protocol all pref 2 handle 102 matchall \
0289                 skip_sw action sample rate 1024 group 1 &> /dev/null
0290         check_fail $? "Managed to configure second sampling rule"
0291 
0292         # Delete the first rule and make sure the second rule can now be
0293         # configured.
0294 
0295         tc filter del dev $rp1 ingress protocol all pref 1 handle 101 matchall
0296 
0297         tc filter add dev $rp1 ingress protocol all pref 2 handle 102 matchall \
0298                 skip_sw action sample rate 1024 group 1
0299         check_err $? "Failed to configure sampling rule after deletion"
0300 
0301         log_test "tc sample conflict test"
0302 
0303         tc filter del dev $rp1 ingress protocol all pref 2 handle 102 matchall
0304 }
0305 
0306 tc_sample_group_conflict_test()
0307 {
0308         RET=0
0309 
0310         # Test that two sampling rules cannot be configured on the same port
0311         # with different groups.
0312 
0313         tc filter add dev $rp1 ingress protocol all pref 1 handle 101 matchall \
0314                 skip_sw action sample rate 1024 group 1
0315         check_err $? "Failed to configure sampling rule"
0316 
0317         tc filter add dev $rp1 ingress protocol all pref 2 handle 102 matchall \
0318                 skip_sw action sample rate 1024 group 2 &> /dev/null
0319         check_fail $? "Managed to configure sampling rule with conflicting group"
0320 
0321         log_test "tc sample group conflict test"
0322 
0323         tc filter del dev $rp1 ingress protocol all pref 1 handle 101 matchall
0324 }
0325 
0326 tc_sample_md_iif_test()
0327 {
0328         local rp1_ifindex
0329 
0330         RET=0
0331 
0332         tc filter add dev $rp1 ingress protocol all pref 1 handle 101 matchall \
0333                 skip_sw action sample rate 5 group 1
0334         check_err $? "Failed to configure sampling rule"
0335 
0336         psample_capture_start
0337 
0338         ip vrf exec v$h1 $MZ $h1 -c 3200 -d 1msec -p 64 -A 192.0.2.1 \
0339                 -B 198.51.100.1 -t udp dp=52768,sp=42768 -q
0340 
0341         psample_capture_stop
0342 
0343         rp1_ifindex=$(ip -j -p link show dev $rp1 | jq '.[]["ifindex"]')
0344         grep -q -e "in-ifindex $rp1_ifindex " $CAPTURE_FILE
0345         check_err $? "Sampled packets do not have expected in-ifindex"
0346 
0347         log_test "tc sample iif"
0348 
0349         tc filter del dev $rp1 ingress protocol all pref 1 handle 101 matchall
0350 }
0351 
0352 tc_sample_md_lag_iif_test()
0353 {
0354         local rp3_ifindex
0355 
0356         RET=0
0357 
0358         tc filter add dev $rp3 ingress protocol all pref 1 handle 101 matchall \
0359                 skip_sw action sample rate 5 group 1
0360         check_err $? "Failed to configure sampling rule"
0361 
0362         psample_capture_start
0363 
0364         ip vrf exec v${h3}_bond $MZ ${h3}_bond -c 3200 -d 1msec -p 64 \
0365                 -A 192.0.2.17 -B 198.51.100.17 -t udp dp=52768,sp=42768 -q
0366 
0367         psample_capture_stop
0368 
0369         rp3_ifindex=$(ip -j -p link show dev $rp3 | jq '.[]["ifindex"]')
0370         grep -q -e "in-ifindex $rp3_ifindex " $CAPTURE_FILE
0371         check_err $? "Sampled packets do not have expected in-ifindex"
0372 
0373         log_test "tc sample lag iif"
0374 
0375         tc filter del dev $rp3 ingress protocol all pref 1 handle 101 matchall
0376 }
0377 
0378 tc_sample_md_oif_test()
0379 {
0380         local rp2_ifindex
0381 
0382         RET=0
0383 
0384         tc filter add dev $rp1 ingress protocol all pref 1 handle 101 matchall \
0385                 skip_sw action sample rate 5 group 1
0386         check_err $? "Failed to configure sampling rule"
0387 
0388         psample_capture_start
0389 
0390         ip vrf exec v$h1 $MZ $h1 -c 3200 -d 1msec -p 64 -A 192.0.2.1 \
0391                 -B 198.51.100.1 -t udp dp=52768,sp=42768 -q
0392 
0393         psample_capture_stop
0394 
0395         rp2_ifindex=$(ip -j -p link show dev $rp2 | jq '.[]["ifindex"]')
0396         grep -q -e "out-ifindex $rp2_ifindex " $CAPTURE_FILE
0397         check_err $? "Sampled packets do not have expected out-ifindex"
0398 
0399         log_test "tc sample oif"
0400 
0401         tc filter del dev $rp1 ingress protocol all pref 1 handle 101 matchall
0402 }
0403 
0404 tc_sample_md_lag_oif_test()
0405 {
0406         local rp4_ifindex
0407 
0408         RET=0
0409 
0410         tc filter add dev $rp3 ingress protocol all pref 1 handle 101 matchall \
0411                 skip_sw action sample rate 5 group 1
0412         check_err $? "Failed to configure sampling rule"
0413 
0414         psample_capture_start
0415 
0416         ip vrf exec v${h3}_bond $MZ ${h3}_bond -c 3200 -d 1msec -p 64 \
0417                 -A 192.0.2.17 -B 198.51.100.17 -t udp dp=52768,sp=42768 -q
0418 
0419         psample_capture_stop
0420 
0421         rp4_ifindex=$(ip -j -p link show dev $rp4 | jq '.[]["ifindex"]')
0422         grep -q -e "out-ifindex $rp4_ifindex " $CAPTURE_FILE
0423         check_err $? "Sampled packets do not have expected out-ifindex"
0424 
0425         log_test "tc sample lag oif"
0426 
0427         tc filter del dev $rp3 ingress protocol all pref 1 handle 101 matchall
0428 }
0429 
0430 tc_sample_md_out_tc_test()
0431 {
0432         RET=0
0433 
0434         # Output traffic class is not supported on Spectrum-1.
0435         mlxsw_only_on_spectrum 2+ || return
0436 
0437         tc filter add dev $rp1 ingress protocol all pref 1 handle 101 matchall \
0438                 skip_sw action sample rate 5 group 1
0439         check_err $? "Failed to configure sampling rule"
0440 
0441         # By default, all the packets should go to the same traffic class (0).
0442 
0443         psample_capture_start
0444 
0445         ip vrf exec v$h1 $MZ $h1 -c 3200 -d 1msec -p 64 -A 192.0.2.1 \
0446                 -B 198.51.100.1 -t udp dp=52768,sp=42768 -q
0447 
0448         psample_capture_stop
0449 
0450         grep -q -e "out-tc 0 " $CAPTURE_FILE
0451         check_err $? "Sampled packets do not have expected out-tc (0)"
0452 
0453         # Map all priorities to highest traffic class (7) and check reported
0454         # out-tc.
0455         tc qdisc replace dev $rp2 root handle 1: \
0456                 prio bands 3 priomap 0 0 0 0 0 0 0 0
0457 
0458         psample_capture_start
0459 
0460         ip vrf exec v$h1 $MZ $h1 -c 3200 -d 1msec -p 64 -A 192.0.2.1 \
0461                 -B 198.51.100.1 -t udp dp=52768,sp=42768 -q
0462 
0463         psample_capture_stop
0464 
0465         grep -q -e "out-tc 7 " $CAPTURE_FILE
0466         check_err $? "Sampled packets do not have expected out-tc (7)"
0467 
0468         log_test "tc sample out-tc"
0469 
0470         tc qdisc del dev $rp2 root handle 1:
0471         tc filter del dev $rp1 ingress protocol all pref 1 handle 101 matchall
0472 }
0473 
0474 tc_sample_md_out_tc_occ_test()
0475 {
0476         local backlog pct occ
0477 
0478         RET=0
0479 
0480         # Output traffic class occupancy is not supported on Spectrum-1.
0481         mlxsw_only_on_spectrum 2+ || return
0482 
0483         tc filter add dev $rp1 ingress protocol all pref 1 handle 101 matchall \
0484                 skip_sw action sample rate 1024 group 1
0485         check_err $? "Failed to configure sampling rule"
0486 
0487         # Configure a shaper on egress to create congestion.
0488         tc qdisc replace dev $rp2 root handle 1: \
0489                 tbf rate 1Mbit burst 256k limit 1M
0490 
0491         psample_capture_start
0492 
0493         ip vrf exec v$h1 $MZ $h1 -c 0 -d 1usec -p 1400 -A 192.0.2.1 \
0494                 -B 198.51.100.1 -t udp dp=52768,sp=42768 -q &
0495 
0496         # Allow congestion to reach steady state.
0497         sleep 10
0498 
0499         backlog=$(tc -j -p -s qdisc show dev $rp2 | jq '.[0]["backlog"]')
0500 
0501         # Kill mausezahn.
0502         { kill %% && wait %%; } 2>/dev/null
0503 
0504         psample_capture_stop
0505 
0506         # Record last congestion sample.
0507         occ=$(grep -e "out-tc-occ " $CAPTURE_FILE | tail -n 1 | \
0508                 cut -d ' ' -f 16)
0509 
0510         pct=$((100 * (occ - backlog) / backlog))
0511         (( -1 <= pct && pct <= 1))
0512         check_err $? "Recorded a congestion of $backlog bytes, but sampled congestion is $occ bytes, which is $pct% off. Required accuracy is +-5%"
0513 
0514         log_test "tc sample out-tc-occ"
0515 
0516         tc qdisc del dev $rp2 root handle 1:
0517         tc filter del dev $rp1 ingress protocol all pref 1 handle 101 matchall
0518 }
0519 
0520 tc_sample_md_latency_test()
0521 {
0522         RET=0
0523 
0524         # Egress sampling not supported on Spectrum-1.
0525         mlxsw_only_on_spectrum 2+ || return
0526 
0527         tc filter add dev $rp2 egress protocol all pref 1 handle 101 matchall \
0528                 skip_sw action sample rate 5 group 1
0529         check_err $? "Failed to configure sampling rule"
0530 
0531         psample_capture_start
0532 
0533         ip vrf exec v$h1 $MZ $h1 -c 3200 -d 1msec -p 64 -A 192.0.2.1 \
0534                 -B 198.51.100.1 -t udp dp=52768,sp=42768 -q
0535 
0536         psample_capture_stop
0537 
0538         grep -q -e "latency " $CAPTURE_FILE
0539         check_err $? "Sampled packets do not have latency attribute"
0540 
0541         log_test "tc sample latency"
0542 
0543         tc filter del dev $rp2 egress protocol all pref 1 handle 101 matchall
0544 }
0545 
0546 tc_sample_acl_group_conflict_test()
0547 {
0548         RET=0
0549 
0550         # Test that two flower sampling rules cannot be configured on the same
0551         # port with different groups.
0552 
0553         # Policy-based sampling is not supported on Spectrum-1.
0554         mlxsw_only_on_spectrum 2+ || return
0555 
0556         tc filter add dev $rp1 ingress protocol ip pref 1 handle 101 flower \
0557                 skip_sw action sample rate 1024 group 1
0558         check_err $? "Failed to configure sampling rule"
0559 
0560         tc filter add dev $rp1 ingress protocol ip pref 2 handle 102 flower \
0561                 skip_sw action sample rate 1024 group 1
0562         check_err $? "Failed to configure sampling rule with same group"
0563 
0564         tc filter add dev $rp1 ingress protocol ip pref 3 handle 103 flower \
0565                 skip_sw action sample rate 1024 group 2 &> /dev/null
0566         check_fail $? "Managed to configure sampling rule with conflicting group"
0567 
0568         log_test "tc sample (w/ flower) group conflict test"
0569 
0570         tc filter del dev $rp1 ingress protocol ip pref 2 handle 102 flower
0571         tc filter del dev $rp1 ingress protocol ip pref 1 handle 101 flower
0572 }
0573 
0574 __tc_sample_acl_rate_test()
0575 {
0576         local bind=$1; shift
0577         local port=$1; shift
0578         local pkts pct
0579 
0580         RET=0
0581 
0582         # Policy-based sampling is not supported on Spectrum-1.
0583         mlxsw_only_on_spectrum 2+ || return
0584 
0585         tc filter add dev $port $bind protocol ip pref 1 handle 101 flower \
0586                 skip_sw dst_ip 198.51.100.1 action sample rate 32 group 1
0587         check_err $? "Failed to configure sampling rule"
0588 
0589         psample_capture_start
0590 
0591         ip vrf exec v$h1 $MZ $h1 -c 320000 -d 100usec -p 64 -A 192.0.2.1 \
0592                 -B 198.51.100.1 -t udp dp=52768,sp=42768 -q
0593 
0594         psample_capture_stop
0595 
0596         pkts=$(grep -e "group 1 " $CAPTURE_FILE | wc -l)
0597         pct=$((100 * (pkts - 10000) / 10000))
0598         (( -25 <= pct && pct <= 25))
0599         check_err $? "Expected 10000 packets, got $pkts packets, which is $pct% off. Required accuracy is +-25%"
0600 
0601         # Setup a filter that should not match any packet and make sure packets
0602         # are not sampled.
0603         tc filter del dev $port $bind protocol ip pref 1 handle 101 flower
0604 
0605         tc filter add dev $port $bind protocol ip pref 1 handle 101 flower \
0606                 skip_sw dst_ip 198.51.100.10 action sample rate 32 group 1
0607         check_err $? "Failed to configure sampling rule"
0608 
0609         psample_capture_start
0610 
0611         ip vrf exec v$h1 $MZ $h1 -c 3200 -d 1msec -p 64 -A 192.0.2.1 \
0612                 -B 198.51.100.1 -t udp dp=52768,sp=42768 -q
0613 
0614         psample_capture_stop
0615 
0616         grep -q -e "group 1 " $CAPTURE_FILE
0617         check_fail $? "Sampled packets when should not"
0618 
0619         log_test "tc sample (w/ flower) rate ($bind)"
0620 
0621         tc filter del dev $port $bind protocol ip pref 1 handle 101 flower
0622 }
0623 
0624 tc_sample_acl_rate_test()
0625 {
0626         __tc_sample_acl_rate_test ingress $rp1
0627         __tc_sample_acl_rate_test egress $rp2
0628 }
0629 
0630 tc_sample_acl_max_rate_test()
0631 {
0632         RET=0
0633 
0634         # Policy-based sampling is not supported on Spectrum-1.
0635         mlxsw_only_on_spectrum 2+ || return
0636 
0637         tc filter add dev $rp1 ingress protocol ip pref 1 handle 101 flower \
0638                 skip_sw action sample rate $((2 ** 24 - 1)) group 1
0639         check_err $? "Failed to configure sampling rule with max rate"
0640 
0641         tc filter del dev $rp1 ingress protocol ip pref 1 handle 101 flower
0642 
0643         tc filter add dev $rp1 ingress protocol ip pref 1 handle 101 flower \
0644                 skip_sw action sample rate $((2 ** 24)) \
0645                 group 1 &> /dev/null
0646         check_fail $? "Managed to configure sampling rate above maximum"
0647 
0648         log_test "tc sample (w/ flower) maximum rate"
0649 }
0650 
0651 trap cleanup EXIT
0652 
0653 setup_prepare
0654 setup_wait
0655 
0656 tests_run
0657 
0658 exit $EXIT_STATUS
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