diff options
Diffstat (limited to 'tools/testing/selftests/drivers/net/mlxsw/ethtool_lanes.sh')
| -rwxr-xr-x | tools/testing/selftests/drivers/net/mlxsw/ethtool_lanes.sh | 187 |
1 files changed, 187 insertions, 0 deletions
diff --git a/tools/testing/selftests/drivers/net/mlxsw/ethtool_lanes.sh b/tools/testing/selftests/drivers/net/mlxsw/ethtool_lanes.sh new file mode 100755 index 000000000..91891b941 --- /dev/null +++ b/tools/testing/selftests/drivers/net/mlxsw/ethtool_lanes.sh @@ -0,0 +1,187 @@ +#!/bin/bash +# SPDX-License-Identifier: GPL-2.0 + +lib_dir=$(dirname $0)/../../../net/forwarding + +ALL_TESTS=" + autoneg + autoneg_force_mode +" + +NUM_NETIFS=2 +: ${TIMEOUT:=30000} # ms +source $lib_dir/lib.sh +source $lib_dir/ethtool_lib.sh + +setup_prepare() +{ + swp1=${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 $? "ports did not come up" + + local lanes_exist=$(ethtool $swp1 | grep 'Lanes:') + if [[ -z $lanes_exist ]]; 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() +{ + local dev=$1; shift + local arr=("$@") + local max_lanes + local max_speed + local -a lanes_arr + local -a speeds_arr + local -a max_values + + for ((i=0; i<${#arr[@]}; i+=2)); do + speeds_arr+=("${arr[$i]}") + lanes_arr+=("${arr[i+1]}") + done + + max_values+=($(get_max "${speeds_arr[@]}")) + max_values+=($(get_max "${lanes_arr[@]}")) + + echo ${max_values[@]} +} + +search_linkmode() +{ + local speed=$1; shift + local lanes=$1; shift + local arr=("$@") + + for ((i=0; i<${#arr[@]}; i+=2)); do + if [[ $speed -eq ${arr[$i]} && $lanes -eq ${arr[i+1]} ]]; then + return 1 + fi + done + return 0 +} + +autoneg() +{ + RET=0 + + local lanes + local max_speed + local max_lanes + + local -a linkmodes_params=($(dev_linkmodes_params_get $swp1 1)) + local -a max_values=($(max_speed_and_lanes_get $swp1 "${linkmodes_params[@]}")) + max_speed=${max_values[0]} + max_lanes=${max_values[1]} + + lanes=$max_lanes + + while [[ $lanes -ge 1 ]]; do + search_linkmode $max_speed $lanes "${linkmodes_params[@]}" + if [[ $? -eq 1 ]]; then + ethtool_set $swp1 speed $max_speed lanes $lanes + 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" + + check_lanes $swp1 $lanes $max_speed + log_test "$lanes lanes is autonegotiated" + fi + let $((lanes /= 2)) + done + + check_unsupported_lanes $swp1 $max_speed $max_lanes 1 + log_test "Lanes number larger than max width is not set" + + ip link set dev $swp2 down + ip link set dev $swp1 down +} + +autoneg_force_mode() +{ + RET=0 + + local lanes + local max_speed + local max_lanes + + local -a linkmodes_params=($(dev_linkmodes_params_get $swp1 1)) + local -a max_values=($(max_speed_and_lanes_get $swp1 "${linkmodes_params[@]}")) + max_speed=${max_values[0]} + max_lanes=${max_values[1]} + + lanes=$max_lanes + + while [[ $lanes -ge 1 ]]; do + search_linkmode $max_speed $lanes "${linkmodes_params[@]}" + if [[ $? -eq 1 ]]; then + ethtool_set $swp1 speed $max_speed lanes $lanes autoneg off + ethtool_set $swp2 speed $max_speed lanes $lanes autoneg off + 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" + + check_lanes $swp1 $lanes $max_speed + log_test "Autoneg off, $lanes lanes detected during force mode" + fi + let $((lanes /= 2)) + done + + check_unsupported_lanes $swp1 $max_speed $max_lanes 0 + log_test "Lanes number larger than max width is not set" + + ip link set dev $swp2 down + ip link set dev $swp1 down + + ethtool -s $swp2 autoneg on + ethtool -s $swp1 autoneg on +} + +check_ethtool_lanes_support +setup_prepare + +tests_run + +exit $EXIT_STATUS |