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Date: Wed, 13 Oct 2021 13:37:48 +0300
From: Ido Schimmel <idosch@...sch.org>
To: netdev@...r.kernel.org
Cc: davem@...emloft.net, kuba@...nel.org, jiri@...dia.com,
petrm@...dia.com, mlxsw@...dia.com,
Ido Schimmel <idosch@...dia.com>
Subject: [PATCH net-next 5/5] selftests: mlxsw: RED: Test per-TC ECN counters
From: Petr Machata <petrm@...dia.com>
Add a variant of ECN test that uses qdisc marked counter (supported on
Spectrum-3 and above) instead of the aggregate ethtool ecn_marked counter.
Signed-off-by: Petr Machata <petrm@...dia.com>
Signed-off-by: Ido Schimmel <idosch@...dia.com>
---
.../drivers/net/mlxsw/sch_red_core.sh | 51 +++++++++++++++----
.../drivers/net/mlxsw/sch_red_ets.sh | 11 ++++
.../drivers/net/mlxsw/sch_red_root.sh | 8 +++
3 files changed, 60 insertions(+), 10 deletions(-)
diff --git a/tools/testing/selftests/drivers/net/mlxsw/sch_red_core.sh b/tools/testing/selftests/drivers/net/mlxsw/sch_red_core.sh
index eea3e5ad3f38..dd90cd87d4f9 100644
--- a/tools/testing/selftests/drivers/net/mlxsw/sch_red_core.sh
+++ b/tools/testing/selftests/drivers/net/mlxsw/sch_red_core.sh
@@ -331,6 +331,14 @@ get_nmarked()
ethtool_stats_get $swp3 ecn_marked
}
+get_qdisc_nmarked()
+{
+ local vlan=$1; shift
+
+ busywait_for_counter 1100 +1 \
+ qdisc_stats_get $swp3 $(get_qdisc_handle $vlan) .marked
+}
+
get_qdisc_npackets()
{
local vlan=$1; shift
@@ -384,14 +392,15 @@ build_backlog()
check_marking()
{
+ local get_nmarked=$1; shift
local vlan=$1; shift
local cond=$1; shift
local npackets_0=$(get_qdisc_npackets $vlan)
- local nmarked_0=$(get_nmarked $vlan)
+ local nmarked_0=$($get_nmarked $vlan)
sleep 5
local npackets_1=$(get_qdisc_npackets $vlan)
- local nmarked_1=$(get_nmarked $vlan)
+ local nmarked_1=$($get_nmarked $vlan)
local nmarked_d=$((nmarked_1 - nmarked_0))
local npackets_d=$((npackets_1 - npackets_0))
@@ -404,6 +413,7 @@ check_marking()
ecn_test_common()
{
local name=$1; shift
+ local get_nmarked=$1; shift
local vlan=$1; shift
local limit=$1; shift
local backlog
@@ -416,7 +426,7 @@ ecn_test_common()
RET=0
backlog=$(build_backlog $vlan $((2 * limit / 3)) udp)
check_err $? "Could not build the requested backlog"
- pct=$(check_marking $vlan "== 0")
+ pct=$(check_marking "$get_nmarked" $vlan "== 0")
check_err $? "backlog $backlog / $limit Got $pct% marked packets, expected == 0."
log_test "TC $((vlan - 10)): $name backlog < limit"
@@ -426,22 +436,23 @@ ecn_test_common()
RET=0
backlog=$(build_backlog $vlan $((3 * limit / 2)) tcp tos=0x01)
check_err $? "Could not build the requested backlog"
- pct=$(check_marking $vlan ">= 95")
+ pct=$(check_marking "$get_nmarked" $vlan ">= 95")
check_err $? "backlog $backlog / $limit Got $pct% marked packets, expected >= 95."
log_test "TC $((vlan - 10)): $name backlog > limit"
}
-do_ecn_test()
+__do_ecn_test()
{
+ local get_nmarked=$1; shift
local vlan=$1; shift
local limit=$1; shift
- local name=ECN
+ local name=${1-ECN}; shift
start_tcp_traffic $h1.$vlan $(ipaddr 1 $vlan) $(ipaddr 3 $vlan) \
$h3_mac tos=0x01
sleep 1
- ecn_test_common "$name" $vlan $limit
+ ecn_test_common "$name" "$get_nmarked" $vlan $limit
# Up there we saw that UDP gets accepted when backlog is below the
# limit. Now that it is above, it should all get dropped, and backlog
@@ -455,6 +466,26 @@ do_ecn_test()
sleep 1
}
+do_ecn_test()
+{
+ local vlan=$1; shift
+ local limit=$1; shift
+
+ __do_ecn_test get_nmarked "$vlan" "$limit"
+}
+
+do_ecn_test_perband()
+{
+ local vlan=$1; shift
+ local limit=$1; shift
+
+ # Per-band ECN counters are not supported on Spectrum-1 and Spectrum-2.
+ [[ "$DEVLINK_VIDDID" == "15b3:cb84" ||
+ "$DEVLINK_VIDDID" == "15b3:cf6c" ]] && return
+
+ __do_ecn_test get_qdisc_nmarked "$vlan" "$limit" "per-band ECN"
+}
+
do_ecn_nodrop_test()
{
local vlan=$1; shift
@@ -465,7 +496,7 @@ do_ecn_nodrop_test()
$h3_mac tos=0x01
sleep 1
- ecn_test_common "$name" $vlan $limit
+ ecn_test_common "$name" get_nmarked $vlan $limit
# Up there we saw that UDP gets accepted when backlog is below the
# limit. Now that it is above, in nodrop mode, make sure it goes to
@@ -495,7 +526,7 @@ do_red_test()
RET=0
backlog=$(build_backlog $vlan $((2 * limit / 3)) tcp tos=0x01)
check_err $? "Could not build the requested backlog"
- pct=$(check_marking $vlan "== 0")
+ pct=$(check_marking get_nmarked $vlan "== 0")
check_err $? "backlog $backlog / $limit Got $pct% marked packets, expected == 0."
log_test "TC $((vlan - 10)): RED backlog < limit"
@@ -503,7 +534,7 @@ do_red_test()
RET=0
backlog=$(build_backlog $vlan $((3 * limit / 2)) tcp tos=0x01)
check_fail $? "Traffic went into backlog instead of being early-dropped"
- pct=$(check_marking $vlan "== 0")
+ pct=$(check_marking get_nmarked $vlan "== 0")
check_err $? "backlog $backlog / $limit Got $pct% marked packets, expected == 0."
local diff=$((limit - backlog))
pct=$((100 * diff / limit))
diff --git a/tools/testing/selftests/drivers/net/mlxsw/sch_red_ets.sh b/tools/testing/selftests/drivers/net/mlxsw/sch_red_ets.sh
index b58b4cf9dc13..1e5ad3209436 100755
--- a/tools/testing/selftests/drivers/net/mlxsw/sch_red_ets.sh
+++ b/tools/testing/selftests/drivers/net/mlxsw/sch_red_ets.sh
@@ -4,6 +4,7 @@
ALL_TESTS="
ping_ipv4
ecn_test
+ ecn_test_perband
ecn_nodrop_test
red_test
mc_backlog_test
@@ -86,6 +87,16 @@ ecn_test()
uninstall_qdisc
}
+ecn_test_perband()
+{
+ install_qdisc ecn
+
+ do_ecn_test_perband 10 $BACKLOG1
+ do_ecn_test_perband 11 $BACKLOG2
+
+ uninstall_qdisc
+}
+
ecn_nodrop_test()
{
install_qdisc ecn nodrop
diff --git a/tools/testing/selftests/drivers/net/mlxsw/sch_red_root.sh b/tools/testing/selftests/drivers/net/mlxsw/sch_red_root.sh
index ede9c38d3eff..d79a82f317d2 100755
--- a/tools/testing/selftests/drivers/net/mlxsw/sch_red_root.sh
+++ b/tools/testing/selftests/drivers/net/mlxsw/sch_red_root.sh
@@ -4,6 +4,7 @@
ALL_TESTS="
ping_ipv4
ecn_test
+ ecn_test_perband
ecn_nodrop_test
red_test
mc_backlog_test
@@ -35,6 +36,13 @@ ecn_test()
uninstall_qdisc
}
+ecn_test_perband()
+{
+ install_qdisc ecn
+ do_ecn_test_perband 10 $BACKLOG
+ uninstall_qdisc
+}
+
ecn_nodrop_test()
{
install_qdisc ecn nodrop
--
2.31.1
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