name : ethtool_lanes.sh #!/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