selftests: mlxsw: Add devlink KVD resource test

#!/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"