diff options
Diffstat (limited to 'tools')
| -rw-r--r-- | tools/testing/selftests/drivers/net/mlxsw/qos_lib.sh | 98 | ||||
| -rwxr-xr-x | tools/testing/selftests/drivers/net/mlxsw/qos_mc_aware.sh | 103 |
2 files changed, 109 insertions, 92 deletions
diff --git a/tools/testing/selftests/drivers/net/mlxsw/qos_lib.sh b/tools/testing/selftests/drivers/net/mlxsw/qos_lib.sh new file mode 100644 index 000000000000..e80be65799ad --- /dev/null +++ b/tools/testing/selftests/drivers/net/mlxsw/qos_lib.sh @@ -0,0 +1,98 @@ +# SPDX-License-Identifier: GPL-2.0 + +humanize() +{ + local speed=$1; shift + + for unit in bps Kbps Mbps Gbps; do + if (($(echo "$speed < 1024" | bc))); then + break + fi + + speed=$(echo "scale=1; $speed / 1024" | bc) + done + + echo "$speed${unit}" +} + +rate() +{ + local t0=$1; shift + local t1=$1; shift + local interval=$1; shift + + echo $((8 * (t1 - t0) / interval)) +} + +start_traffic() +{ + local h_in=$1; shift # Where the traffic egresses the host + local sip=$1; shift + local dip=$1; shift + local dmac=$1; shift + + $MZ $h_in -p 8000 -A $sip -B $dip -c 0 \ + -a own -b $dmac -t udp -q & + sleep 1 +} + +stop_traffic() +{ + # Suppress noise from killing mausezahn. + { kill %% && wait %%; } 2>/dev/null +} + +check_rate() +{ + local rate=$1; shift + local min=$1; shift + local what=$1; shift + + if ((rate > min)); then + return 0 + fi + + echo "$what $(humanize $ir) < $(humanize $min)" > /dev/stderr + return 1 +} + +measure_rate() +{ + local sw_in=$1; shift # Where the traffic ingresses the switch + local host_in=$1; shift # Where it ingresses another host + local counter=$1; shift # Counter to use for measurement + local what=$1; shift + + local interval=10 + local i + local ret=0 + + # Dips in performance might cause momentary ingress rate to drop below + # 1Gbps. That wouldn't saturate egress and MC would thus get through, + # seemingly winning bandwidth on account of UC. Demand at least 2Gbps + # average ingress rate to somewhat mitigate this. + local min_ingress=2147483648 + + for i in {5..0}; do + local t0=$(ethtool_stats_get $host_in $counter) + local u0=$(ethtool_stats_get $sw_in $counter) + sleep $interval + local t1=$(ethtool_stats_get $host_in $counter) + local u1=$(ethtool_stats_get $sw_in $counter) + + local ir=$(rate $u0 $u1 $interval) + local er=$(rate $t0 $t1 $interval) + + if check_rate $ir $min_ingress "$what ingress rate"; then + break + fi + + # Fail the test if we can't get the throughput. + if ((i == 0)); then + ret=1 + fi + done + + echo $ir $er + return $ret +} diff --git a/tools/testing/selftests/drivers/net/mlxsw/qos_mc_aware.sh b/tools/testing/selftests/drivers/net/mlxsw/qos_mc_aware.sh index 2e17fe3b4872..71231ad2dbfb 100755 --- a/tools/testing/selftests/drivers/net/mlxsw/qos_mc_aware.sh +++ b/tools/testing/selftests/drivers/net/mlxsw/qos_mc_aware.sh @@ -68,6 +68,7 @@ lib_dir=$(dirname $0)/../../../net/forwarding NUM_NETIFS=6 source $lib_dir/lib.sh source $lib_dir/devlink_lib.sh +source qos_lib.sh h1_create() { @@ -220,107 +221,28 @@ ping_ipv4() ping_test $h2 192.0.2.130 } -humanize() -{ - local speed=$1; shift - - for unit in bps Kbps Mbps Gbps; do - if (($(echo "$speed < 1024" | bc))); then - break - fi - - speed=$(echo "scale=1; $speed / 1024" | bc) - done - - echo "$speed${unit}" -} - -rate() -{ - local t0=$1; shift - local t1=$1; shift - local interval=$1; shift - - echo $((8 * (t1 - t0) / interval)) -} - -check_rate() -{ - local rate=$1; shift - local min=$1; shift - local what=$1; shift - - if ((rate > min)); then - return 0 - fi - - echo "$what $(humanize $ir) < $(humanize $min_ingress)" > /dev/stderr - return 1 -} - -measure_uc_rate() -{ - local what=$1; shift - - local interval=10 - local i - local ret=0 - - # Dips in performance might cause momentary ingress rate to drop below - # 1Gbps. That wouldn't saturate egress and MC would thus get through, - # seemingly winning bandwidth on account of UC. Demand at least 2Gbps - # average ingress rate to somewhat mitigate this. - local min_ingress=2147483648 - - $MZ $h2.111 -p 8000 -A 192.0.2.129 -B 192.0.2.130 -c 0 \ - -a own -b $h3mac -t udp -q & - sleep 1 - - for i in {5..0}; do - local t0=$(ethtool_stats_get $h3 rx_octets_prio_1) - local u0=$(ethtool_stats_get $swp2 rx_octets_prio_1) - sleep $interval - local t1=$(ethtool_stats_get $h3 rx_octets_prio_1) - local u1=$(ethtool_stats_get $swp2 rx_octets_prio_1) - - local ir=$(rate $u0 $u1 $interval) - local er=$(rate $t0 $t1 $interval) - - if check_rate $ir $min_ingress "$what ingress rate"; then - break - fi - - # Fail the test if we can't get the throughput. - if ((i == 0)); then - ret=1 - fi - done - - # Suppress noise from killing mausezahn. - { kill %% && wait; } 2>/dev/null - - echo $ir $er - exit $ret -} - test_mc_aware() { RET=0 local -a uc_rate - uc_rate=($(measure_uc_rate "UC-only")) + start_traffic $h2.111 192.0.2.129 192.0.2.130 $h3mac + uc_rate=($(measure_rate $swp2 $h3 rx_octets_prio_1 "UC-only")) check_err $? "Could not get high enough UC-only ingress rate" + stop_traffic local ucth1=${uc_rate[1]} - $MZ $h1 -p 8000 -c 0 -a own -b bc -t udp -q & + start_traffic $h1 own bc bc local d0=$(date +%s) local t0=$(ethtool_stats_get $h3 rx_octets_prio_0) local u0=$(ethtool_stats_get $swp1 rx_octets_prio_0) local -a uc_rate_2 - uc_rate_2=($(measure_uc_rate "UC+MC")) + start_traffic $h2.111 192.0.2.129 192.0.2.130 $h3mac + uc_rate_2=($(measure_rate $swp2 $h3 rx_octets_prio_1 "UC+MC")) check_err $? "Could not get high enough UC+MC ingress rate" + stop_traffic local ucth2=${uc_rate_2[1]} local d1=$(date +%s) @@ -338,8 +260,7 @@ test_mc_aware() local mc_ir=$(rate $u0 $u1 $interval) local mc_er=$(rate $t0 $t1 $interval) - # Suppress noise from killing mausezahn. - { kill %% && wait; } 2>/dev/null + stop_traffic log_test "UC performace under MC overload" @@ -363,8 +284,7 @@ test_uc_aware() { RET=0 - $MZ $h2.111 -p 8000 -A 192.0.2.129 -B 192.0.2.130 -c 0 \ - -a own -b $h3mac -t udp -q & + start_traffic $h2.111 192.0.2.129 192.0.2.130 $h3mac local d0=$(date +%s) local t0=$(ethtool_stats_get $h3 rx_octets_prio_1) @@ -394,8 +314,7 @@ test_uc_aware() ((attempts == passes)) check_err $? - # Suppress noise from killing mausezahn. - { kill %% && wait; } 2>/dev/null + stop_traffic log_test "MC performace under UC overload" echo " ingress UC throughput $(humanize ${uc_ir})" |