forked from Minki/linux
selftests: mlxsw: Add tc sample tests for new triggers
Test that packets are sampled when tc-sample is used with matchall egress binding and flower classifier. Verify that when performing sampling on egress the end-to-end latency is reported as metadata. Signed-off-by: Ido Schimmel <idosch@nvidia.com> Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Ido Schimmel
David S. Miller
parent
45aad0b704
commit
f0b692c4ee
@ -41,6 +41,10 @@ ALL_TESTS="
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tc_sample_md_lag_oif_test
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tc_sample_md_out_tc_test
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tc_sample_md_out_tc_occ_test
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tc_sample_md_latency_test
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tc_sample_acl_group_conflict_test
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tc_sample_acl_rate_test
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tc_sample_acl_max_rate_test
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"
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NUM_NETIFS=8
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CAPTURE_FILE=$(mktemp)
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@ -482,6 +486,137 @@ tc_sample_md_out_tc_occ_test()
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tc filter del dev $rp1 ingress protocol all pref 1 handle 101 matchall
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}
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tc_sample_md_latency_test()
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{
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RET=0
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# Egress sampling not supported on Spectrum-1.
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[[ "$DEVLINK_VIDDID" == "15b3:cb84" ]] && return
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tc filter add dev $rp2 egress protocol all pref 1 handle 101 matchall \
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skip_sw action sample rate 5 group 1
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check_err $? "Failed to configure sampling rule"
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psample_capture_start
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ip vrf exec v$h1 $MZ $h1 -c 3200 -d 1msec -p 64 -A 192.0.2.1 \
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-B 198.51.100.1 -t udp dp=52768,sp=42768 -q
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psample_capture_stop
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grep -q -e "latency " $CAPTURE_FILE
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check_err $? "Sampled packets do not have latency attribute"
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log_test "tc sample latency"
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tc filter del dev $rp2 egress protocol all pref 1 handle 101 matchall
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}
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tc_sample_acl_group_conflict_test()
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{
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RET=0
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# Test that two flower sampling rules cannot be configured on the same
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# port with different groups.
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# Policy-based sampling is not supported on Spectrum-1.
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[[ "$DEVLINK_VIDDID" == "15b3:cb84" ]] && return
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tc filter add dev $rp1 ingress protocol ip pref 1 handle 101 flower \
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skip_sw action sample rate 1024 group 1
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check_err $? "Failed to configure sampling rule"
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tc filter add dev $rp1 ingress protocol ip pref 2 handle 102 flower \
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skip_sw action sample rate 1024 group 1
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check_err $? "Failed to configure sampling rule with same group"
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tc filter add dev $rp1 ingress protocol ip pref 3 handle 103 flower \
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skip_sw action sample rate 1024 group 2 &> /dev/null
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check_fail $? "Managed to configure sampling rule with conflicting group"
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log_test "tc sample (w/ flower) group conflict test"
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tc filter del dev $rp1 ingress protocol ip pref 2 handle 102 flower
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tc filter del dev $rp1 ingress protocol ip pref 1 handle 101 flower
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}
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__tc_sample_acl_rate_test()
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{
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local bind=$1; shift
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local port=$1; shift
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local pkts pct
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RET=0
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# Policy-based sampling is not supported on Spectrum-1.
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[[ "$DEVLINK_VIDDID" == "15b3:cb84" ]] && return
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tc filter add dev $port $bind protocol ip pref 1 handle 101 flower \
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skip_sw dst_ip 198.51.100.1 action sample rate 32 group 1
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check_err $? "Failed to configure sampling rule"
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psample_capture_start
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ip vrf exec v$h1 $MZ $h1 -c 3200 -d 1msec -p 64 -A 192.0.2.1 \
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-B 198.51.100.1 -t udp dp=52768,sp=42768 -q
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psample_capture_stop
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pkts=$(grep -e "group 1 " $CAPTURE_FILE | wc -l)
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pct=$((100 * (pkts - 100) / 100))
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(( -25 <= pct && pct <= 25))
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check_err $? "Expected 100 packets, got $pkts packets, which is $pct% off. Required accuracy is +-25%"
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# Setup a filter that should not match any packet and make sure packets
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# are not sampled.
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tc filter del dev $port $bind protocol ip pref 1 handle 101 flower
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tc filter add dev $port $bind protocol ip pref 1 handle 101 flower \
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skip_sw dst_ip 198.51.100.10 action sample rate 32 group 1
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check_err $? "Failed to configure sampling rule"
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psample_capture_start
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ip vrf exec v$h1 $MZ $h1 -c 3200 -d 1msec -p 64 -A 192.0.2.1 \
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-B 198.51.100.1 -t udp dp=52768,sp=42768 -q
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psample_capture_stop
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grep -q -e "group 1 " $CAPTURE_FILE
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check_fail $? "Sampled packets when should not"
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log_test "tc sample (w/ flower) rate ($bind)"
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tc filter del dev $port $bind protocol ip pref 1 handle 101 flower
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}
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tc_sample_acl_rate_test()
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{
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__tc_sample_acl_rate_test ingress $rp1
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__tc_sample_acl_rate_test egress $rp2
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}
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tc_sample_acl_max_rate_test()
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{
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RET=0
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# Policy-based sampling is not supported on Spectrum-1.
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[[ "$DEVLINK_VIDDID" == "15b3:cb84" ]] && return
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tc filter add dev $rp1 ingress protocol ip pref 1 handle 101 flower \
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skip_sw action sample rate $((2 ** 24 - 1)) group 1
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check_err $? "Failed to configure sampling rule with max rate"
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tc filter del dev $rp1 ingress protocol ip pref 1 handle 101 flower
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tc filter add dev $rp1 ingress protocol ip pref 1 handle 101 flower \
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skip_sw action sample rate $((2 ** 24)) \
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group 1 &> /dev/null
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check_fail $? "Managed to configure sampling rate above maximum"
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log_test "tc sample (w/ flower) maximum rate"
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}
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trap cleanup EXIT
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setup_prepare
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