Commit 64916b57 authored by Amit Cohen's avatar Amit Cohen Committed by David S. Miller
Browse files

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: default avatarAmit Cohen <amitc@mellanox.com>
Signed-off-by: default avatarIdo Schimmel <idosch@mellanox.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 8f72a9cf

tools/testing/selftests/net/forwarding/ethtool.sh

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+318 −0
Original line number Diff line number Diff line 
#!/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

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