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

Source file repositories/reference/linux-study-clean/tools/testing/selftests/drivers/net/mlxsw/ethtool_lanes.sh

File Facts

System
Linux kernel
Corpus path
tools/testing/selftests/drivers/net/mlxsw/ethtool_lanes.sh
Extension
.sh
Size
4121 bytes
Lines
191
Domain
Support Tooling And Documentation
Bucket
tools
Inferred role
Support Tooling And Documentation: tools
Status
atlas-only

Why This File Exists

Repository support layer: documentation, build tooling, samples, user-space helper tools, generated initramfs support, licenses, and validation utilities.

Dependency Surface

Detected Declarations

Annotated Snippet

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

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

ALL_TESTS="
	autoneg
	autoneg_force_mode
"

NUM_NETIFS=2
: ${TIMEOUT:=30000} # ms
source $lib_dir/lib.sh
source $ethtool_lib_dir/ethtool_lib.sh

setup_prepare()
{
	swp1=${NETIFS[p1]}
	swp2=${NETIFS[p2]}

	ip link set dev $swp1 up
	ip link set dev $swp2 up

	busywait "$TIMEOUT" wait_for_port_up ethtool $swp2
	check_err $? "ports did not come up"

	busywait $TIMEOUT sh -c "ethtool $swp1 | grep -q Lanes:"
	if [[ $? -ne 0 ]]; then
		log_test "SKIP: driver does not support lanes setting"
		exit 1
	fi

	ip link set dev $swp2 down
	ip link set dev $swp1 down
}

check_lanes()
{
	local dev=$1; shift
	local lanes=$1; shift
	local max_speed=$1; shift
	local chosen_lanes

	chosen_lanes=$(ethtool $dev | grep 'Lanes:')
	chosen_lanes=${chosen_lanes#*"Lanes: "}

	((chosen_lanes == lanes))
	check_err $? "swp1 advertise $max_speed and $lanes, devs sync to $chosen_lanes"
}

check_unsupported_lanes()
{
	local dev=$1; shift
	local max_speed=$1; shift
	local max_lanes=$1; shift
	local autoneg=$1; shift
	local autoneg_str=""

	local unsupported_lanes=$((max_lanes *= 2))

	if [[ $autoneg -eq 0 ]]; then
		autoneg_str="autoneg off"
	fi

	ethtool -s $swp1 speed $max_speed lanes $unsupported_lanes $autoneg_str &> /dev/null
	check_fail $? "Unsuccessful $unsupported_lanes lanes setting was expected"
}

max_speed_and_lanes_get()

Annotation

Implementation Notes