Commit 29c1eac2 authored by Petr Machata's avatar Petr Machata Committed by David S. Miller
Browse files

selftests: mlxsw: Add a test for un/offloadable qdisc trees 



This checks that various qdisc configurations either are or are not
offloaded.

Signed-off-by: default avatarPetr Machata <petrm@nvidia.com>
Signed-off-by: default avatarIdo Schimmel <idosch@nvidia.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 2a18c08d

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

0 → 100755
+276 −0
Original line number Diff line number Diff line 
#!/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