linux/linux-5.4.31/tools/testing/selftests/drivers/net/netdevsim/devlink.sh

#!/bin/bash
# SPDX-License-Identifier: GPL-2.0

lib_dir=$(dirname $0)/../../../net/forwarding

ALL_TESTS="fw_flash_test params_test regions_test"
NUM_NETIFS=0
source $lib_dir/lib.sh

BUS_ADDR=10
PORT_COUNT=4
DEV_NAME=netdevsim$BUS_ADDR
SYSFS_NET_DIR=/sys/bus/netdevsim/devices/$DEV_NAME/net/
DEBUGFS_DIR=/sys/kernel/debug/netdevsim/$DEV_NAME/
DL_HANDLE=netdevsim/$DEV_NAME

fw_flash_test()
{
	RET=0

	devlink dev flash $DL_HANDLE file dummy
	check_err $? "Failed to flash with status updates on"

	echo "n"> $DEBUGFS_DIR/fw_update_status
	check_err $? "Failed to disable status updates"

	devlink dev flash $DL_HANDLE file dummy
	check_err $? "Failed to flash with status updates off"

	log_test "fw flash test"
}

param_get()
{
	local name=$1

	cmd_jq "devlink dev param show $DL_HANDLE name $name -j" \
	       '.[][][].values[] | select(.cmode == "driverinit").value'
}

param_set()
{
	local name=$1
	local value=$2

	devlink dev param set $DL_HANDLE name $name cmode driverinit value $value
}

check_value()
{
	local name=$1
	local phase_name=$2
	local expected_param_value=$3
	local expected_debugfs_value=$4
	local value

	value=$(param_get $name)
	check_err $? "Failed to get $name param value"
	[ "$value" == "$expected_param_value" ]
	check_err $? "Unexpected $phase_name $name param value"
	value=$(<$DEBUGFS_DIR/$name)
	check_err $? "Failed to get $name debugfs value"
	[ "$value" == "$expected_debugfs_value" ]
	check_err $? "Unexpected $phase_name $name debugfs value"
}

params_test()
{
	RET=0

	local max_macs
	local test1

	check_value max_macs initial 32 32
	check_value test1 initial true Y

	param_set max_macs 16
	check_err $? "Failed to set max_macs param value"
	param_set test1 false
	check_err $? "Failed to set test1 param value"

	check_value max_macs post-set 16 32
	check_value test1 post-set false Y

	devlink dev reload $DL_HANDLE

	check_value max_macs post-reload 16 16
	check_value test1 post-reload false N

	log_test "params test"
}

check_region_size()
{
	local name=$1
	local size

	size=$(devlink region show $DL_HANDLE/$name -j | jq -e -r '.[][].size')
	check_err $? "Failed to get $name region size"
	[ $size -eq 32768 ]
	check_err $? "Invalid $name region size"
}

check_region_snapshot_count()
{
	local name=$1
	local phase_name=$2
	local expected_count=$3
	local count

	count=$(devlink region show $DL_HANDLE/$name -j | jq -e -r '.[][].snapshot | length')
	[ $count -eq $expected_count ]
	check_err $? "Unexpected $phase_name snapshot count"
}

regions_test()
{
	RET=0

	local count

	check_region_size dummy
	check_region_snapshot_count dummy initial 0

	echo ""> $DEBUGFS_DIR/take_snapshot
	check_err $? "Failed to take first dummy region snapshot"
	check_region_snapshot_count dummy post-first-snapshot 1

	echo ""> $DEBUGFS_DIR/take_snapshot
	check_err $? "Failed to take second dummy region snapshot"
	check_region_snapshot_count dummy post-second-snapshot 2

	echo ""> $DEBUGFS_DIR/take_snapshot
	check_err $? "Failed to take third dummy region snapshot"
	check_region_snapshot_count dummy post-third-snapshot 3

	devlink region del $DL_HANDLE/dummy snapshot 1
	check_err $? "Failed to delete first dummy region snapshot"

	check_region_snapshot_count dummy post-first-delete 2

	log_test "regions test"
}

setup_prepare()
{
	modprobe netdevsim
	echo "$BUS_ADDR $PORT_COUNT" > /sys/bus/netdevsim/new_device
	while [ ! -d $SYSFS_NET_DIR ] ; do :; done
}

cleanup()
{
	pre_cleanup
	echo "$BUS_ADDR" > /sys/bus/netdevsim/del_device
	modprobe -r netdevsim
}

trap cleanup EXIT

setup_prepare

tests_run

exit $EXIT_STATUS