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Commit b030c338 authored by Yuval Mintz's avatar Yuval Mintz Committed by David S. Miller
Browse files

selftests: mlxsw: Add devlink KVD resource test 



Add a selftest that can be used to perform basic sanity of the devlink
resource API as well as test the behavior of KVD manipulation in the
driver.

This is the first case of a HW-only test - in order to test the devlink
resource a driver capable of exposing resources has to be provided
first.

Signed-off-by: default avatarYuval Mintz <yuvalm@mellanox.com>
[petrm@mellanox.com: Extracted two patches out of this patch. Tweaked
commit message.]
Signed-off-by: default avatarPetr Machata <petrm@mellanox.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 5aeba3e8

tools/testing/selftests/drivers/net/mlxsw/spectrum/devlink_resources.sh

0 → 100755
+117 −0
Original line number Diff line number Diff line 
#!/bin/bash

# SPDX-License-Identifier: GPL-2.0



NUM_NETIFS=1

source devlink_lib_spectrum.sh



setup_prepare()

{

	devlink_sp_read_kvd_defaults

}



cleanup()

{

	pre_cleanup

	devlink_sp_size_kvd_to_default

}



trap cleanup EXIT



setup_prepare



profiles_test()

{

	local i



	log_info "Running profile tests"



	for i in $KVD_PROFILES; do

		RET=0

		devlink_sp_resource_kvd_profile_set $i

		log_test "'$i' profile"

	done



	# Default is explicitly tested at end to ensure it's actually applied

	RET=0

	devlink_sp_resource_kvd_profile_set "default"

	log_test "'default' profile"

}



resources_min_test()

{

	local size

	local i

	local j



	log_info "Running KVD-minimum tests"



	for i in $KVD_CHILDREN; do

		RET=0

		size=$(devlink_resource_get kvd "$i" | jq '.["size_min"]')

		devlink_resource_size_set "$size" kvd "$i"



		# In case of linear, need to minimize sub-resources as well

		if [[ "$i" == "linear" ]]; then

			for j in $KVDL_CHILDREN; do

				devlink_resource_size_set 0 kvd linear "$j"

			done

		fi



		devlink_reload

		devlink_sp_size_kvd_to_default

		log_test "'$i' minimize [$size]"

	done

}



resources_max_test()

{

	local min_size

	local size

	local i

	local j



	log_info "Running KVD-maximum tests"

	for i in $KVD_CHILDREN; do

		RET=0

		devlink_sp_resource_minimize



		# Calculate the maximum possible size for the given partition

		size=$(devlink_resource_size_get kvd)

		for j in $KVD_CHILDREN; do

			if [ "$i" != "$j" ]; then

				min_size=$(devlink_resource_get kvd "$j" | \

					   jq '.["size_min"]')

				size=$((size - min_size))

			fi

		done



		# Test almost maximum size

		devlink_resource_size_set "$((size - 128))" kvd "$i"

		devlink_reload

		log_test "'$i' almost maximize [$((size - 128))]"



		# Test above maximum size

		devlink resource set "$DEVLINK_DEV" \

			path "kvd/$i" size $((size + 128)) &> /dev/null

		check_fail $? "Set kvd/$i to size $((size + 128)) should fail"

		log_test "'$i' Overflow rejection [$((size + 128))]"



		# Test maximum size

		if [ "$i" == "hash_single" ] || [ "$i" == "hash_double" ]; then

			echo "SKIP: Observed problem with exact max $i"

			continue

		fi



		devlink_resource_size_set "$size" kvd "$i"

		devlink_reload

		log_test "'$i' maximize [$size]"



		devlink_sp_size_kvd_to_default

	done

}



profiles_test

resources_min_test

resources_max_test



exit "$RET"