Commit 21584e6a authored by Ido Schimmel's avatar Ido Schimmel Committed by Jakub Kicinski
Browse files

selftests: netdevsim: Add test for nexthop offload API 



Test various aspects of the nexthop offload API on top of the netdevsim
implementation. Both good and bad flows are tested.

Signed-off-by: default avatarIdo Schimmel <idosch@nvidia.com>
Signed-off-by: default avatarJakub Kicinski <kuba@kernel.org>
parent 66e58bf0

tools/testing/selftests/drivers/net/netdevsim/nexthop.sh

0 → 100755
+436 −0
Original line number Diff line number Diff line 
#!/bin/bash

# SPDX-License-Identifier: GPL-2.0

#

# This test is for checking the nexthop offload API. It makes use of netdevsim

# which registers a listener to the nexthop notification chain.



lib_dir=$(dirname $0)/../../../net/forwarding



ALL_TESTS="

	nexthop_single_add_test

	nexthop_single_add_err_test

	nexthop_group_add_test

	nexthop_group_add_err_test

	nexthop_group_replace_test

	nexthop_group_replace_err_test

	nexthop_single_replace_test

	nexthop_single_replace_err_test

	nexthop_single_in_group_replace_test

	nexthop_single_in_group_replace_err_test

	nexthop_single_in_group_delete_test

	nexthop_single_in_group_delete_err_test

	nexthop_replay_test

	nexthop_replay_err_test

"

NETDEVSIM_PATH=/sys/bus/netdevsim/

DEV_ADDR=1337

DEV=netdevsim${DEV_ADDR}

DEVLINK_DEV=netdevsim/${DEV}

SYSFS_NET_DIR=/sys/bus/netdevsim/devices/$DEV/net/

NUM_NETIFS=0

source $lib_dir/lib.sh

source $lib_dir/devlink_lib.sh



nexthop_check()

{

	local nharg="$1"; shift

	local expected="$1"; shift



	out=$($IP nexthop show ${nharg} | sed -e 's/ *$//')

	if [[ "$out" != "$expected" ]]; then

		return 1

	fi



	return 0

}



nexthop_resource_check()

{

	local expected_occ=$1; shift



	occ=$($DEVLINK -jp resource show $DEVLINK_DEV \

		| jq '.[][][] | select(.name=="nexthops") | .["occ"]')



	if [ $expected_occ -ne $occ ]; then

		return 1

	fi



	return 0

}



nexthop_resource_set()

{

	local size=$1; shift



	$DEVLINK resource set $DEVLINK_DEV path nexthops size $size

	$DEVLINK dev reload $DEVLINK_DEV

}



nexthop_single_add_test()

{

	RET=0



	$IP nexthop add id 1 via 192.0.2.2 dev dummy1

	nexthop_check "id 1" "id 1 via 192.0.2.2 dev dummy1 scope link trap"

	check_err $? "Unexpected nexthop entry"



	nexthop_resource_check 1

	check_err $? "Wrong nexthop occupancy"



	$IP nexthop del id 1

	nexthop_resource_check 0

	check_err $? "Wrong nexthop occupancy after delete"



	log_test "Single nexthop add and delete"

}



nexthop_single_add_err_test()

{

	RET=0



	nexthop_resource_set 1



	$IP nexthop add id 1 via 192.0.2.2 dev dummy1



	$IP nexthop add id 2 via 192.0.2.3 dev dummy1 &> /dev/null

	check_fail $? "Nexthop addition succeeded when should fail"



	nexthop_resource_check 1

	check_err $? "Wrong nexthop occupancy"



	log_test "Single nexthop add failure"



	$IP nexthop flush &> /dev/null

	nexthop_resource_set 9999

}



nexthop_group_add_test()

{

	RET=0



	$IP nexthop add id 1 via 192.0.2.2 dev dummy1

	$IP nexthop add id 2 via 192.0.2.3 dev dummy1



	$IP nexthop add id 10 group 1/2

	nexthop_check "id 10" "id 10 group 1/2 trap"

	check_err $? "Unexpected nexthop group entry"



	nexthop_resource_check 4

	check_err $? "Wrong nexthop occupancy"



	$IP nexthop del id 10

	nexthop_resource_check 2

	check_err $? "Wrong nexthop occupancy after delete"



	$IP nexthop add id 10 group 1,20/2,39

	nexthop_check "id 10" "id 10 group 1,20/2,39 trap"

	check_err $? "Unexpected weighted nexthop group entry"



	nexthop_resource_check 61

	check_err $? "Wrong weighted nexthop occupancy"



	$IP nexthop del id 10

	nexthop_resource_check 2

	check_err $? "Wrong nexthop occupancy after delete"



	log_test "Nexthop group add and delete"



	$IP nexthop flush &> /dev/null

}



nexthop_group_add_err_test()

{

	RET=0



	nexthop_resource_set 2



	$IP nexthop add id 1 via 192.0.2.2 dev dummy1

	$IP nexthop add id 2 via 192.0.2.3 dev dummy1



	$IP nexthop add id 10 group 1/2 &> /dev/null

	check_fail $? "Nexthop group addition succeeded when should fail"



	nexthop_resource_check 2

	check_err $? "Wrong nexthop occupancy"



	log_test "Nexthop group add failure"



	$IP nexthop flush &> /dev/null

	nexthop_resource_set 9999

}



nexthop_group_replace_test()

{

	RET=0



	$IP nexthop add id 1 via 192.0.2.2 dev dummy1

	$IP nexthop add id 2 via 192.0.2.3 dev dummy1

	$IP nexthop add id 3 via 192.0.2.4 dev dummy1

	$IP nexthop add id 10 group 1/2



	$IP nexthop replace id 10 group 1/2/3

	nexthop_check "id 10" "id 10 group 1/2/3 trap"

	check_err $? "Unexpected nexthop group entry"



	nexthop_resource_check 6

	check_err $? "Wrong nexthop occupancy"



	log_test "Nexthop group replace"



	$IP nexthop flush &> /dev/null

}



nexthop_group_replace_err_test()

{

	RET=0



	nexthop_resource_set 5



	$IP nexthop add id 1 via 192.0.2.2 dev dummy1

	$IP nexthop add id 2 via 192.0.2.3 dev dummy1

	$IP nexthop add id 3 via 192.0.2.4 dev dummy1

	$IP nexthop add id 10 group 1/2



	$IP nexthop replace id 10 group 1/2/3 &> /dev/null

	check_fail $? "Nexthop group replacement succeeded when should fail"



	nexthop_check "id 10" "id 10 group 1/2 trap"

	check_err $? "Unexpected nexthop group entry after failure"



	nexthop_resource_check 5

	check_err $? "Wrong nexthop occupancy after failure"



	log_test "Nexthop group replace failure"



	$IP nexthop flush &> /dev/null

	nexthop_resource_set 9999

}



nexthop_single_replace_test()

{

	RET=0



	$IP nexthop add id 1 via 192.0.2.2 dev dummy1



	$IP nexthop replace id 1 via 192.0.2.3 dev dummy1

	nexthop_check "id 1" "id 1 via 192.0.2.3 dev dummy1 scope link trap"

	check_err $? "Unexpected nexthop entry"



	nexthop_resource_check 1

	check_err $? "Wrong nexthop occupancy"



	log_test "Single nexthop replace"



	$IP nexthop flush &> /dev/null

}



nexthop_single_replace_err_test()

{

	RET=0



	# This is supposed to cause the replace to fail because the new nexthop

	# is programmed before deleting the replaced one.

	nexthop_resource_set 1



	$IP nexthop add id 1 via 192.0.2.2 dev dummy1



	$IP nexthop replace id 1 via 192.0.2.3 dev dummy1 &> /dev/null

	check_fail $? "Nexthop replace succeeded when should fail"



	nexthop_check "id 1" "id 1 via 192.0.2.2 dev dummy1 scope link trap"

	check_err $? "Unexpected nexthop entry after failure"



	nexthop_resource_check 1

	check_err $? "Wrong nexthop occupancy after failure"



	log_test "Single nexthop replace failure"



	$IP nexthop flush &> /dev/null

	nexthop_resource_set 9999

}



nexthop_single_in_group_replace_test()

{

	RET=0



	$IP nexthop add id 1 via 192.0.2.2 dev dummy1

	$IP nexthop add id 2 via 192.0.2.3 dev dummy1

	$IP nexthop add id 10 group 1/2



	$IP nexthop replace id 1 via 192.0.2.4 dev dummy1

	check_err $? "Failed to replace nexthop when should not"



	nexthop_check "id 10" "id 10 group 1/2 trap"

	check_err $? "Unexpected nexthop group entry"



	nexthop_resource_check 4

	check_err $? "Wrong nexthop occupancy"



	log_test "Single nexthop replace while in group"



	$IP nexthop flush &> /dev/null

}



nexthop_single_in_group_replace_err_test()

{

	RET=0



	nexthop_resource_set 5



	$IP nexthop add id 1 via 192.0.2.2 dev dummy1

	$IP nexthop add id 2 via 192.0.2.3 dev dummy1

	$IP nexthop add id 10 group 1/2



	$IP nexthop replace id 1 via 192.0.2.4 dev dummy1 &> /dev/null

	check_fail $? "Nexthop replacement succeeded when should fail"



	nexthop_check "id 1" "id 1 via 192.0.2.2 dev dummy1 scope link trap"

	check_err $? "Unexpected nexthop entry after failure"



	nexthop_check "id 10" "id 10 group 1/2 trap"

	check_err $? "Unexpected nexthop group entry after failure"



	nexthop_resource_check 4

	check_err $? "Wrong nexthop occupancy"



	log_test "Single nexthop replace while in group failure"



	$IP nexthop flush &> /dev/null

	nexthop_resource_set 9999

}



nexthop_single_in_group_delete_test()

{

	RET=0



	$IP nexthop add id 1 via 192.0.2.2 dev dummy1

	$IP nexthop add id 2 via 192.0.2.3 dev dummy1

	$IP nexthop add id 10 group 1/2



	$IP nexthop del id 1

	nexthop_check "id 10" "id 10 group 2 trap"

	check_err $? "Unexpected nexthop group entry"



	nexthop_resource_check 2

	check_err $? "Wrong nexthop occupancy"



	log_test "Single nexthop delete while in group"



	$IP nexthop flush &> /dev/null

}



nexthop_single_in_group_delete_err_test()

{

	RET=0



	# First, nexthop 1 will be deleted, which will reduce the occupancy to

	# 5. Afterwards, a replace notification will be sent for nexthop group

	# 10 with only two nexthops. Since the new group is allocated before

	# the old is deleted, the replacement will fail as it will result in an

	# occupancy of 7.

	nexthop_resource_set 6



	$IP nexthop add id 1 via 192.0.2.2 dev dummy1

	$IP nexthop add id 2 via 192.0.2.3 dev dummy1

	$IP nexthop add id 3 via 192.0.2.4 dev dummy1

	$IP nexthop add id 10 group 1/2/3



	$IP nexthop del id 1



	nexthop_resource_check 5

	check_err $? "Wrong nexthop occupancy"



	log_test "Single nexthop delete while in group failure"



	$IP nexthop flush &> /dev/null

	nexthop_resource_set 9999

}



nexthop_replay_test()

{

	RET=0



	$IP nexthop add id 1 via 192.0.2.2 dev dummy1

	$IP nexthop add id 2 via 192.0.2.3 dev dummy1

	$IP nexthop add id 10 group 1/2



	$DEVLINK dev reload $DEVLINK_DEV

	check_err $? "Failed to reload when should not"



	nexthop_check "id 1" "id 1 via 192.0.2.2 dev dummy1 scope link trap"

	check_err $? "Unexpected nexthop entry after reload"



	nexthop_check "id 2" "id 2 via 192.0.2.3 dev dummy1 scope link trap"

	check_err $? "Unexpected nexthop entry after reload"



	nexthop_check "id 10" "id 10 group 1/2 trap"

	check_err $? "Unexpected nexthop group entry after reload"



	nexthop_resource_check 4

	check_err $? "Wrong nexthop occupancy"



	log_test "Nexthop replay"



	$IP nexthop flush &> /dev/null

}



nexthop_replay_err_test()

{

	RET=0



	$IP nexthop add id 1 via 192.0.2.2 dev dummy1

	$IP nexthop add id 2 via 192.0.2.3 dev dummy1

	$IP nexthop add id 10 group 1/2



	# Reduce size of nexthop resource so that reload will fail.

	$DEVLINK resource set $DEVLINK_DEV path nexthops size 3

	$DEVLINK dev reload $DEVLINK_DEV &> /dev/null

	check_fail $? "Reload succeeded when should fail"



	$DEVLINK resource set $DEVLINK_DEV path nexthops size 9999

	$DEVLINK dev reload $DEVLINK_DEV

	check_err $? "Failed to reload when should not"



	log_test "Nexthop replay failure"



	$IP nexthop flush &> /dev/null

}



setup_prepare()

{

	local netdev



	modprobe netdevsim &> /dev/null



	echo "$DEV_ADDR 1" > ${NETDEVSIM_PATH}/new_device

	while [ ! -d $SYSFS_NET_DIR ] ; do :; done



	set -e



	ip netns add testns1

	devlink dev reload $DEVLINK_DEV netns testns1



	IP="ip -netns testns1"

	DEVLINK="devlink -N testns1"



	$IP link add name dummy1 up type dummy

	$IP address add 192.0.2.1/24 dev dummy1



	set +e

}



cleanup()

{

	pre_cleanup

	ip netns del testns1

	echo "$DEV_ADDR" > ${NETDEVSIM_PATH}/del_device

	modprobe -r netdevsim &> /dev/null

}



trap cleanup EXIT



setup_prepare



tests_run



exit $EXIT_STATUS