| Current File : //usr/src/linux-headers-6.8.0-60-generic/tools/testing/selftests/drivers/net/mlxsw/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