selftests: forwarding: Add speed and auto-negotiation test

Check configurations and packets transference with different variations
of autoneg and speed.

Test plan:
1. Test force of same speed with autoneg off
2. Test force of different speeds with autoneg off (should fail)
3. One side is autoneg on and other side sets force of common speeds
4. One side is autoneg on and other side only advertises a subset of the
   common speeds (one speed of the subset)
5. One side is autoneg on and other side only advertises a subset of the
   common speeds. Check that highest speed is negotiated
6. Test autoneg on, but each side advertises different speeds (should
   fail)

Signed-off-by: Amit Cohen <amitc@mellanox.com>
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Amit Cohen 2019-11-18 09:50:02 +02:00 committed by David S. Miller
parent 8f72a9cf36
commit 64916b57c0

View File

@ -0,0 +1,318 @@
#!/bin/bash
# SPDX-License-Identifier: GPL-2.0
ALL_TESTS="
same_speeds_autoneg_off
different_speeds_autoneg_off
combination_of_neg_on_and_off
advertise_subset_of_speeds
check_highest_speed_is_chosen
different_speeds_autoneg_on
"
NUM_NETIFS=2
source lib.sh
source ethtool_lib.sh
h1_create()
{
simple_if_init $h1 192.0.2.1/24
}
h1_destroy()
{
simple_if_fini $h1 192.0.2.1/24
}
h2_create()
{
simple_if_init $h2 192.0.2.2/24
}
h2_destroy()
{
simple_if_fini $h2 192.0.2.2/24
}
setup_prepare()
{
h1=${NETIFS[p1]}
h2=${NETIFS[p2]}
h1_create
h2_create
}
cleanup()
{
pre_cleanup
h2_destroy
h1_destroy
}
different_speeds_get()
{
local dev1=$1; shift
local dev2=$1; shift
local with_mode=$1; shift
local adver=$1; shift
local -a speeds_arr
speeds_arr=($(common_speeds_get $dev1 $dev2 $with_mode $adver))
if [[ ${#speeds_arr[@]} < 2 ]]; then
check_err 1 "cannot check different speeds. There are not enough speeds"
fi
echo ${speeds_arr[0]} ${speeds_arr[1]}
}
same_speeds_autoneg_off()
{
# Check that when each of the reported speeds is forced, the links come
# up and are operational.
local -a speeds_arr=($(common_speeds_get $h1 $h2 0 0))
for speed in "${speeds_arr[@]}"; do
RET=0
ethtool_set $h1 speed $speed autoneg off
ethtool_set $h2 speed $speed autoneg off
setup_wait_dev_with_timeout $h1
setup_wait_dev_with_timeout $h2
ping_do $h1 192.0.2.2
check_err $? "speed $speed autoneg off"
log_test "force of same speed autoneg off"
log_info "speed = $speed"
done
ethtool -s $h2 autoneg on
ethtool -s $h1 autoneg on
}
different_speeds_autoneg_off()
{
# Test that when we force different speeds, links are not up and ping
# fails.
RET=0
local -a speeds_arr=($(different_speeds_get $h1 $h2 0 0))
local speed1=${speeds_arr[0]}
local speed2=${speeds_arr[1]}
ethtool_set $h1 speed $speed1 autoneg off
ethtool_set $h2 speed $speed2 autoneg off
setup_wait_dev_with_timeout $h1
setup_wait_dev_with_timeout $h2
ping_do $h1 192.0.2.2
check_fail $? "ping with different speeds"
log_test "force of different speeds autoneg off"
ethtool -s $h2 autoneg on
ethtool -s $h1 autoneg on
}
combination_of_neg_on_and_off()
{
# Test that when one device is forced to a speed supported by both
# endpoints and the other device is configured to autoneg on, the links
# are up and ping passes.
local -a speeds_arr=($(common_speeds_get $h1 $h2 0 1))
for speed in "${speeds_arr[@]}"; do
RET=0
ethtool_set $h1 speed $speed autoneg off
setup_wait_dev_with_timeout $h1
setup_wait_dev_with_timeout $h2
ping_do $h1 192.0.2.2
check_err $? "h1-speed=$speed autoneg off, h2 autoneg on"
log_test "one side with autoneg off and another with autoneg on"
log_info "force speed = $speed"
done
ethtool -s $h1 autoneg on
}
hex_speed_value_get()
{
local speed=$1; shift
local shift_size=${speed_values[$speed]}
speed=$((0x1 << $"shift_size"))
printf "%#x" "$speed"
}
subset_of_common_speeds_get()
{
local dev1=$1; shift
local dev2=$1; shift
local adver=$1; shift
local -a speeds_arr=($(common_speeds_get $dev1 $dev2 0 $adver))
local speed_to_advertise=0
local speed_to_remove=${speeds_arr[0]}
speed_to_remove+='base'
local -a speeds_mode_arr=($(common_speeds_get $dev1 $dev2 1 $adver))
for speed in ${speeds_mode_arr[@]}; do
if [[ $speed != $speed_to_remove* ]]; then
speed=$(hex_speed_value_get $speed)
speed_to_advertise=$(($speed_to_advertise | \
$speed))
fi
done
# Convert to hex.
printf "%#x" "$speed_to_advertise"
}
speed_to_advertise_get()
{
# The function returns the hex number that is composed by OR-ing all
# the modes corresponding to the provided speed.
local speed_without_mode=$1; shift
local supported_speeds=("$@"); shift
local speed_to_advertise=0
speed_without_mode+='base'
for speed in ${supported_speeds[@]}; do
if [[ $speed == $speed_without_mode* ]]; then
speed=$(hex_speed_value_get $speed)
speed_to_advertise=$(($speed_to_advertise | \
$speed))
fi
done
# Convert to hex.
printf "%#x" "$speed_to_advertise"
}
advertise_subset_of_speeds()
{
# Test that when one device advertises a subset of speeds and another
# advertises a specific speed (but all modes of this speed), the links
# are up and ping passes.
RET=0
local speed_1_to_advertise=$(subset_of_common_speeds_get $h1 $h2 1)
ethtool_set $h1 advertise $speed_1_to_advertise
if [ $RET != 0 ]; then
log_test "advertise subset of speeds"
return
fi
local -a speeds_arr_without_mode=($(common_speeds_get $h1 $h2 0 1))
# Check only speeds that h1 advertised. Remove the first speed.
unset speeds_arr_without_mode[0]
local -a speeds_arr_with_mode=($(common_speeds_get $h1 $h2 1 1))
for speed_value in ${speeds_arr_without_mode[@]}; do
RET=0
local speed_2_to_advertise=$(speed_to_advertise_get $speed_value \
"${speeds_arr_with_mode[@]}")
ethtool_set $h2 advertise $speed_2_to_advertise
setup_wait_dev_with_timeout $h1
setup_wait_dev_with_timeout $h2
ping_do $h1 192.0.2.2
check_err $? "h1=$speed_1_to_advertise, h2=$speed_2_to_advertise ($speed_value)"
log_test "advertise subset of speeds"
log_info "h1=$speed_1_to_advertise, h2=$speed_2_to_advertise"
done
ethtool -s $h2 autoneg on
ethtool -s $h1 autoneg on
}
check_highest_speed_is_chosen()
{
# Test that when one device advertises a subset of speeds, the other
# chooses the highest speed. This test checks configuration without
# traffic.
RET=0
local max_speed
local chosen_speed
local speed_to_advertise=$(subset_of_common_speeds_get $h1 $h2 1)
ethtool_set $h1 advertise $speed_to_advertise
if [ $RET != 0 ]; then
log_test "check highest speed"
return
fi
local -a speeds_arr=($(common_speeds_get $h1 $h2 0 1))
# Remove the first speed, h1 does not advertise this speed.
unset speeds_arr[0]
max_speed=${speeds_arr[0]}
for current in ${speeds_arr[@]}; do
if [[ $current -gt $max_speed ]]; then
max_speed=$current
fi
done
setup_wait_dev_with_timeout $h1
setup_wait_dev_with_timeout $h2
chosen_speed=$(ethtool $h1 | grep 'Speed:')
chosen_speed=${chosen_speed%"Mb/s"*}
chosen_speed=${chosen_speed#*"Speed: "}
((chosen_speed == max_speed))
check_err $? "h1 advertise $speed_to_advertise, h2 sync to speed $chosen_speed"
log_test "check highest speed"
ethtool -s $h2 autoneg on
ethtool -s $h1 autoneg on
}
different_speeds_autoneg_on()
{
# Test that when we configure links to advertise different speeds,
# links are not up and ping fails.
RET=0
local -a speeds=($(different_speeds_get $h1 $h2 1 1))
local speed1=${speeds[0]}
local speed2=${speeds[1]}
speed1=$(hex_speed_value_get $speed1)
speed2=$(hex_speed_value_get $speed2)
ethtool_set $h1 advertise $speed1
ethtool_set $h2 advertise $speed2
if (($RET)); then
setup_wait_dev_with_timeout $h1
setup_wait_dev_with_timeout $h2
ping_do $h1 192.0.2.2
check_fail $? "ping with different speeds autoneg on"
fi
log_test "advertise different speeds autoneg on"
ethtool -s $h2 autoneg on
ethtool -s $h1 autoneg on
}
trap cleanup EXIT
setup_prepare
setup_wait
declare -gA speed_values
eval "speed_values=($(speeds_arr_get))"
tests_run
exit $EXIT_STATUS