Commit f0b692c4 authored by Ido Schimmel's avatar Ido Schimmel Committed by David S. Miller
Browse files

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: default avatarIdo Schimmel <idosch@nvidia.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 45aad0b7

tools/testing/selftests/drivers/net/mlxsw/tc_sample.sh

+135 −0
Original line number Diff line number Diff line
@@ -41,6 +41,10 @@ ALL_TESTS=" 
	tc_sample_md_lag_oif_test

	tc_sample_md_out_tc_test

	tc_sample_md_out_tc_occ_test

	tc_sample_md_latency_test

	tc_sample_acl_group_conflict_test

	tc_sample_acl_rate_test

	tc_sample_acl_max_rate_test

"

NUM_NETIFS=8

CAPTURE_FILE=$(mktemp)
@@ -482,6 +486,137 @@ tc_sample_md_out_tc_occ_test() 
	tc filter del dev $rp1 ingress protocol all pref 1 handle 101 matchall

}



tc_sample_md_latency_test()

{

	RET=0



	# Egress sampling not supported on Spectrum-1.

	[[ "$DEVLINK_VIDDID" == "15b3:cb84" ]] && return



	tc filter add dev $rp2 egress protocol all pref 1 handle 101 matchall \

		skip_sw action sample rate 5 group 1

	check_err $? "Failed to configure sampling rule"



	psample_capture_start



	ip vrf exec v$h1 $MZ $h1 -c 3200 -d 1msec -p 64 -A 192.0.2.1 \

		-B 198.51.100.1 -t udp dp=52768,sp=42768 -q



	psample_capture_stop



	grep -q -e "latency " $CAPTURE_FILE

	check_err $? "Sampled packets do not have latency attribute"



	log_test "tc sample latency"



	tc filter del dev $rp2 egress protocol all pref 1 handle 101 matchall

}



tc_sample_acl_group_conflict_test()

{

	RET=0



	# Test that two flower sampling rules cannot be configured on the same

	# port with different groups.



	# Policy-based sampling is not supported on Spectrum-1.

	[[ "$DEVLINK_VIDDID" == "15b3:cb84" ]] && return



	tc filter add dev $rp1 ingress protocol ip pref 1 handle 101 flower \

		skip_sw action sample rate 1024 group 1

	check_err $? "Failed to configure sampling rule"



	tc filter add dev $rp1 ingress protocol ip pref 2 handle 102 flower \

		skip_sw action sample rate 1024 group 1

	check_err $? "Failed to configure sampling rule with same group"



	tc filter add dev $rp1 ingress protocol ip pref 3 handle 103 flower \

		skip_sw action sample rate 1024 group 2 &> /dev/null

	check_fail $? "Managed to configure sampling rule with conflicting group"



	log_test "tc sample (w/ flower) group conflict test"



	tc filter del dev $rp1 ingress protocol ip pref 2 handle 102 flower

	tc filter del dev $rp1 ingress protocol ip pref 1 handle 101 flower

}



__tc_sample_acl_rate_test()

{

	local bind=$1; shift

	local port=$1; shift

	local pkts pct



	RET=0



	# Policy-based sampling is not supported on Spectrum-1.

	[[ "$DEVLINK_VIDDID" == "15b3:cb84" ]] && return



	tc filter add dev $port $bind protocol ip pref 1 handle 101 flower \

		skip_sw dst_ip 198.51.100.1 action sample rate 32 group 1

	check_err $? "Failed to configure sampling rule"



	psample_capture_start



	ip vrf exec v$h1 $MZ $h1 -c 3200 -d 1msec -p 64 -A 192.0.2.1 \

		-B 198.51.100.1 -t udp dp=52768,sp=42768 -q



	psample_capture_stop



	pkts=$(grep -e "group 1 " $CAPTURE_FILE | wc -l)

	pct=$((100 * (pkts - 100) / 100))

	(( -25 <= pct && pct <= 25))

	check_err $? "Expected 100 packets, got $pkts packets, which is $pct% off. Required accuracy is +-25%"



	# Setup a filter that should not match any packet and make sure packets

	# are not sampled.

	tc filter del dev $port $bind protocol ip pref 1 handle 101 flower



	tc filter add dev $port $bind protocol ip pref 1 handle 101 flower \

		skip_sw dst_ip 198.51.100.10 action sample rate 32 group 1

	check_err $? "Failed to configure sampling rule"



	psample_capture_start



	ip vrf exec v$h1 $MZ $h1 -c 3200 -d 1msec -p 64 -A 192.0.2.1 \

		-B 198.51.100.1 -t udp dp=52768,sp=42768 -q



	psample_capture_stop



	grep -q -e "group 1 " $CAPTURE_FILE

	check_fail $? "Sampled packets when should not"



	log_test "tc sample (w/ flower) rate ($bind)"



	tc filter del dev $port $bind protocol ip pref 1 handle 101 flower

}



tc_sample_acl_rate_test()

{

	__tc_sample_acl_rate_test ingress $rp1

	__tc_sample_acl_rate_test egress $rp2

}



tc_sample_acl_max_rate_test()

{

	RET=0



	# Policy-based sampling is not supported on Spectrum-1.

	[[ "$DEVLINK_VIDDID" == "15b3:cb84" ]] && return



	tc filter add dev $rp1 ingress protocol ip pref 1 handle 101 flower \

		skip_sw action sample rate $((2 ** 24 - 1)) group 1

	check_err $? "Failed to configure sampling rule with max rate"



	tc filter del dev $rp1 ingress protocol ip pref 1 handle 101 flower



	tc filter add dev $rp1 ingress protocol ip pref 1 handle 101 flower \

		skip_sw action sample rate $((2 ** 24)) \

		group 1 &> /dev/null

	check_fail $? "Managed to configure sampling rate above maximum"



	log_test "tc sample (w/ flower) maximum rate"

}



trap cleanup EXIT



setup_prepare