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Date: Tue, 19 Oct 2021 11:07:12 +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, jhs@...atatu.com, xiyou.wangcong@...il.com,
mlxsw@...dia.com, Ido Schimmel <idosch@...dia.com>
Subject: [PATCH net-next 9/9] selftests: mlxsw: Add a test for un/offloadable qdisc trees
From: Petr Machata <petrm@...dia.com>
This checks that various qdisc configurations either are or are not
offloaded.
Signed-off-by: Petr Machata <petrm@...dia.com>
Signed-off-by: Ido Schimmel <idosch@...dia.com>
---
.../drivers/net/mlxsw/sch_offload.sh | 276 ++++++++++++++++++
1 file changed, 276 insertions(+)
create mode 100755 tools/testing/selftests/drivers/net/mlxsw/sch_offload.sh
diff --git a/tools/testing/selftests/drivers/net/mlxsw/sch_offload.sh b/tools/testing/selftests/drivers/net/mlxsw/sch_offload.sh
new file mode 100755
index 000000000000..ade79ef08de3
--- /dev/null
+++ b/tools/testing/selftests/drivers/net/mlxsw/sch_offload.sh
@@ -0,0 +1,276 @@
+#!/bin/bash
+# SPDX-License-Identifier: GPL-2.0
+#
+# Test qdisc offload indication
+
+
+ALL_TESTS="
+ test_root
+ test_etsprio
+"
+NUM_NETIFS=1
+lib_dir=$(dirname $0)/../../../net/forwarding
+source $lib_dir/lib.sh
+
+check_not_offloaded()
+{
+ local handle=$1; shift
+ local h
+ local offloaded
+
+ h=$(qdisc_stats_get $h1 "$handle" .handle)
+ [[ $h == '"'$handle'"' ]]
+ check_err $? "Qdisc with handle $handle does not exist"
+
+ offloaded=$(qdisc_stats_get $h1 "$handle" .offloaded)
+ [[ $offloaded == true ]]
+ check_fail $? "Qdisc with handle $handle offloaded, but should not be"
+}
+
+check_all_offloaded()
+{
+ local handle=$1; shift
+
+ if [[ ! -z $handle ]]; then
+ local offloaded=$(qdisc_stats_get $h1 "$handle" .offloaded)
+ [[ $offloaded == true ]]
+ check_err $? "Qdisc with handle $handle not offloaded"
+ fi
+
+ local unoffloaded=$(tc q sh dev $h1 invisible |
+ grep -v offloaded |
+ sed s/root/parent\ root/ |
+ cut -d' ' -f 5)
+ [[ -z $unoffloaded ]]
+ check_err $? "Qdiscs with following parents not offloaded: $unoffloaded"
+
+ pre_cleanup
+}
+
+with_ets()
+{
+ local handle=$1; shift
+ local locus=$1; shift
+
+ tc qdisc add dev $h1 $locus handle $handle \
+ ets bands 8 priomap 7 6 5 4 3 2 1 0
+ "$@"
+ tc qdisc del dev $h1 $locus
+}
+
+with_prio()
+{
+ local handle=$1; shift
+ local locus=$1; shift
+
+ tc qdisc add dev $h1 $locus handle $handle \
+ prio bands 8 priomap 7 6 5 4 3 2 1 0
+ "$@"
+ tc qdisc del dev $h1 $locus
+}
+
+with_red()
+{
+ local handle=$1; shift
+ local locus=$1; shift
+
+ tc qdisc add dev $h1 $locus handle $handle \
+ red limit 1000000 min 200000 max 300000 probability 0.5 avpkt 1500
+ "$@"
+ tc qdisc del dev $h1 $locus
+}
+
+with_tbf()
+{
+ local handle=$1; shift
+ local locus=$1; shift
+
+ tc qdisc add dev $h1 $locus handle $handle \
+ tbf rate 400Mbit burst 128K limit 1M
+ "$@"
+ tc qdisc del dev $h1 $locus
+}
+
+with_pfifo()
+{
+ local handle=$1; shift
+ local locus=$1; shift
+
+ tc qdisc add dev $h1 $locus handle $handle pfifo limit 100K
+ "$@"
+ tc qdisc del dev $h1 $locus
+}
+
+with_bfifo()
+{
+ local handle=$1; shift
+ local locus=$1; shift
+
+ tc qdisc add dev $h1 $locus handle $handle bfifo limit 100K
+ "$@"
+ tc qdisc del dev $h1 $locus
+}
+
+with_drr()
+{
+ local handle=$1; shift
+ local locus=$1; shift
+
+ tc qdisc add dev $h1 $locus handle $handle drr
+ "$@"
+ tc qdisc del dev $h1 $locus
+}
+
+with_qdiscs()
+{
+ local handle=$1; shift
+ local parent=$1; shift
+ local kind=$1; shift
+ local next_handle=$((handle * 2))
+ local locus;
+
+ if [[ $kind == "--" ]]; then
+ local cmd=$1; shift
+ $cmd $(printf %x: $parent) "$@"
+ else
+ if ((parent == 0)); then
+ locus=root
+ else
+ locus=$(printf "parent %x:1" $parent)
+ fi
+
+ with_$kind $(printf %x: $handle) "$locus" \
+ with_qdiscs $next_handle $handle "$@"
+ fi
+}
+
+get_name()
+{
+ local parent=$1; shift
+ local name=$(echo "" "${@^^}" | tr ' ' -)
+
+ if ((parent != 0)); then
+ kind=$(qdisc_stats_get $h1 $parent: .kind)
+ kind=${kind%\"}
+ kind=${kind#\"}
+ name="-${kind^^}$name"
+ fi
+
+ echo root$name
+}
+
+do_test_offloaded()
+{
+ local handle=$1; shift
+ local parent=$1; shift
+
+ RET=0
+ with_qdiscs $handle $parent "$@" -- check_all_offloaded
+ log_test $(get_name $parent "$@")" offloaded"
+}
+
+do_test_nooffload()
+{
+ local handle=$1; shift
+ local parent=$1; shift
+
+ local name=$(echo "${@^^}" | tr ' ' -)
+ local kind
+
+ RET=0
+ with_qdiscs $handle $parent "$@" -- check_not_offloaded
+ log_test $(get_name $parent "$@")" not offloaded"
+}
+
+do_test_combinations()
+{
+ local handle=$1; shift
+ local parent=$1; shift
+
+ local cont
+ local leaf
+ local fifo
+
+ for cont in "" ets prio; do
+ for leaf in "" red tbf "red tbf" "tbf red"; do
+ for fifo in "" pfifo bfifo; do
+ if [[ -z "$cont$leaf$fifo" ]]; then
+ continue
+ fi
+ do_test_offloaded $handle $parent \
+ $cont $leaf $fifo
+ done
+ done
+ done
+
+ for cont in ets prio; do
+ for leaf in red tbf; do
+ do_test_nooffload $handle $parent $cont red tbf $leaf
+ do_test_nooffload $handle $parent $cont tbf red $leaf
+ done
+ for leaf in "red red" "tbf tbf"; do
+ do_test_nooffload $handle $parent $cont $leaf
+ done
+ done
+
+ do_test_nooffload $handle $parent drr
+}
+
+test_root()
+{
+ do_test_combinations 1 0
+}
+
+do_test_etsprio()
+{
+ local parent=$1; shift
+ local tbfpfx=$1; shift
+ local cont
+
+ for cont in ets prio; do
+ RET=0
+ with_$cont 8: "$parent" \
+ with_red 11: "parent 8:1" \
+ with_red 12: "parent 8:2" \
+ with_tbf 13: "parent 8:3" \
+ with_tbf 14: "parent 8:4" \
+ check_all_offloaded
+ log_test "root$tbfpfx-ETS-{RED,TBF} offloaded"
+
+ RET=0
+ with_$cont 8: "$parent" \
+ with_red 81: "parent 8:1" \
+ with_tbf 811: "parent 81:1" \
+ with_tbf 84: "parent 8:4" \
+ with_red 841: "parent 84:1" \
+ check_all_offloaded
+ log_test "root$tbfpfx-ETS-{RED-TBF,TBF-RED} offloaded"
+
+ RET=0
+ with_$cont 8: "$parent" \
+ with_red 81: "parent 8:1" \
+ with_tbf 811: "parent 81:1" \
+ with_bfifo 8111: "parent 811:1" \
+ with_tbf 82: "parent 8:2" \
+ with_red 821: "parent 82:1" \
+ with_bfifo 8211: "parent 821:1" \
+ check_all_offloaded
+ log_test "root$tbfpfx-ETS-{RED-TBF-bFIFO,TBF-RED-bFIFO} offloaded"
+ done
+}
+
+test_etsprio()
+{
+ do_test_etsprio root ""
+}
+
+cleanup()
+{
+ tc qdisc del dev $h1 root &>/dev/null
+}
+
+trap cleanup EXIT
+h1=${NETIFS[p1]}
+tests_run
+
+exit $EXIT_STATUS
--
2.31.1
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