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Commit 17027032 authored by Ido Schimmel's avatar Ido Schimmel Committed by David S. Miller
Browse files

selftests: mlxsw: Add test cases for devlink-trap L2 drops 



Test that each supported packet trap is triggered under the right
conditions and that packets are indeed dropped and not forwarded.

Signed-off-by: default avatarIdo Schimmel <idosch@mellanox.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent b5ce611f

tools/testing/selftests/drivers/net/mlxsw/devlink_trap_l2_drops.sh

0 → 100755
+484 −0
Original line number Diff line number Diff line 
#!/bin/bash

# SPDX-License-Identifier: GPL-2.0

#

# Test devlink-trap L2 drops functionality over mlxsw. Each registered L2 drop

# packet trap is tested to make sure it is triggered under the right

# conditions.



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



ALL_TESTS="

	source_mac_is_multicast_test

	vlan_tag_mismatch_test

	ingress_vlan_filter_test

	ingress_stp_filter_test

	port_list_is_empty_test

	port_loopback_filter_test

"

NUM_NETIFS=4

source $lib_dir/tc_common.sh

source $lib_dir/lib.sh

source $lib_dir/devlink_lib.sh



h1_create()

{

	simple_if_init $h1

}



h1_destroy()

{

	simple_if_fini $h1

}



h2_create()

{

	simple_if_init $h2

}



h2_destroy()

{

	simple_if_fini $h2

}



switch_create()

{

	ip link add dev br0 type bridge vlan_filtering 1 mcast_snooping 0



	ip link set dev $swp1 master br0

	ip link set dev $swp2 master br0



	ip link set dev br0 up

	ip link set dev $swp1 up

	ip link set dev $swp2 up



	tc qdisc add dev $swp2 clsact

}



switch_destroy()

{

	tc qdisc del dev $swp2 clsact



	ip link set dev $swp2 down

	ip link set dev $swp1 down



	ip link del dev br0

}



setup_prepare()

{

	h1=${NETIFS[p1]}

	swp1=${NETIFS[p2]}



	swp2=${NETIFS[p3]}

	h2=${NETIFS[p4]}



	vrf_prepare



	h1_create

	h2_create



	switch_create

}



cleanup()

{

	pre_cleanup



	switch_destroy



	h2_destroy

	h1_destroy



	vrf_cleanup

}



l2_drops_test()

{

	local trap_name=$1; shift

	local group_name=$1; shift



	# This is the common part of all the tests. It checks that stats are

	# initially idle, then non-idle after changing the trap action and

	# finally idle again. It also makes sure the packets are dropped and

	# never forwarded.

	devlink_trap_stats_idle_test $trap_name

	check_err $? "Trap stats not idle with initial drop action"

	devlink_trap_group_stats_idle_test $group_name

	check_err $? "Trap group stats not idle with initial drop action"



	devlink_trap_action_set $trap_name "trap"



	devlink_trap_stats_idle_test $trap_name

	check_fail $? "Trap stats idle after setting action to trap"

	devlink_trap_group_stats_idle_test $group_name

	check_fail $? "Trap group stats idle after setting action to trap"



	devlink_trap_action_set $trap_name "drop"



	devlink_trap_stats_idle_test $trap_name

	check_err $? "Trap stats not idle after setting action to drop"

	devlink_trap_group_stats_idle_test $group_name

	check_err $? "Trap group stats not idle after setting action to drop"



	tc_check_packets "dev $swp2 egress" 101 0

	check_err $? "Packets were not dropped"

}



l2_drops_cleanup()

{

	local mz_pid=$1; shift



	kill $mz_pid && wait $mz_pid &> /dev/null

	tc filter del dev $swp2 egress protocol ip pref 1 handle 101 flower

}



source_mac_is_multicast_test()

{

	local trap_name="source_mac_is_multicast"

	local smac=01:02:03:04:05:06

	local group_name="l2_drops"

	local mz_pid



	tc filter add dev $swp2 egress protocol ip pref 1 handle 101 \

		flower src_mac $smac action drop



	$MZ $h1 -c 0 -p 100 -a $smac -b bcast -t ip -d 1msec -q &

	mz_pid=$!



	RET=0



	l2_drops_test $trap_name $group_name



	log_test "Source MAC is multicast"



	l2_drops_cleanup $mz_pid

}



__vlan_tag_mismatch_test()

{

	local trap_name="vlan_tag_mismatch"

	local dmac=de:ad:be:ef:13:37

	local group_name="l2_drops"

	local opt=$1; shift

	local mz_pid



	# Remove PVID flag. This should prevent untagged and prio-tagged

	# packets from entering the bridge.

	bridge vlan add vid 1 dev $swp1 untagged master



	tc filter add dev $swp2 egress protocol ip pref 1 handle 101 \

		flower dst_mac $dmac action drop



	$MZ $h1 "$opt" -c 0 -p 100 -a own -b $dmac -t ip -d 1msec -q &

	mz_pid=$!



	l2_drops_test $trap_name $group_name



	# Add PVID and make sure packets are no longer dropped.

	bridge vlan add vid 1 dev $swp1 pvid untagged master

	devlink_trap_action_set $trap_name "trap"



	devlink_trap_stats_idle_test $trap_name

	check_err $? "Trap stats not idle when packets should not be dropped"

	devlink_trap_group_stats_idle_test $group_name

	check_err $? "Trap group stats not idle with when packets should not be dropped"



	tc_check_packets "dev $swp2 egress" 101 0

	check_fail $? "Packets not forwarded when should"



	devlink_trap_action_set $trap_name "drop"



	l2_drops_cleanup $mz_pid

}



vlan_tag_mismatch_untagged_test()

{

	RET=0



	__vlan_tag_mismatch_test



	log_test "VLAN tag mismatch - untagged packets"

}



vlan_tag_mismatch_vid_0_test()

{

	RET=0



	__vlan_tag_mismatch_test "-Q 0"



	log_test "VLAN tag mismatch - prio-tagged packets"

}



vlan_tag_mismatch_test()

{

	vlan_tag_mismatch_untagged_test

	vlan_tag_mismatch_vid_0_test

}



ingress_vlan_filter_test()

{

	local trap_name="ingress_vlan_filter"

	local dmac=de:ad:be:ef:13:37

	local group_name="l2_drops"

	local mz_pid

	local vid=10



	bridge vlan add vid $vid dev $swp2 master

	# During initialization the firmware enables all the VLAN filters and

	# the driver does not turn them off since the traffic will be discarded

	# by the STP filter whose default is DISCARD state. Add the VID on the

	# ingress bridge port and then remove it to make sure it is not member

	# in the VLAN.

	bridge vlan add vid $vid dev $swp1 master

	bridge vlan del vid $vid dev $swp1 master



	RET=0



	tc filter add dev $swp2 egress protocol ip pref 1 handle 101 \

		flower dst_mac $dmac action drop



	$MZ $h1 -Q $vid -c 0 -p 100 -a own -b $dmac -t ip -d 1msec -q &

	mz_pid=$!



	l2_drops_test $trap_name $group_name



	# Add the VLAN on the bridge port and make sure packets are no longer

	# dropped.

	bridge vlan add vid $vid dev $swp1 master

	devlink_trap_action_set $trap_name "trap"



	devlink_trap_stats_idle_test $trap_name

	check_err $? "Trap stats not idle when packets should not be dropped"

	devlink_trap_group_stats_idle_test $group_name

	check_err $? "Trap group stats not idle with when packets should not be dropped"



	tc_check_packets "dev $swp2 egress" 101 0

	check_fail $? "Packets not forwarded when should"



	devlink_trap_action_set $trap_name "drop"



	log_test "Ingress VLAN filter"



	l2_drops_cleanup $mz_pid



	bridge vlan del vid $vid dev $swp1 master

	bridge vlan del vid $vid dev $swp2 master

}



__ingress_stp_filter_test()

{

	local trap_name="ingress_spanning_tree_filter"

	local dmac=de:ad:be:ef:13:37

	local group_name="l2_drops"

	local state=$1; shift

	local mz_pid

	local vid=20



	bridge vlan add vid $vid dev $swp2 master

	bridge vlan add vid $vid dev $swp1 master

	ip link set dev $swp1 type bridge_slave state $state



	tc filter add dev $swp2 egress protocol ip pref 1 handle 101 \

		flower dst_mac $dmac action drop



	$MZ $h1 -Q $vid -c 0 -p 100 -a own -b $dmac -t ip -d 1msec -q &

	mz_pid=$!



	l2_drops_test $trap_name $group_name



	# Change STP state to forwarding and make sure packets are no longer

	# dropped.

	ip link set dev $swp1 type bridge_slave state 3

	devlink_trap_action_set $trap_name "trap"



	devlink_trap_stats_idle_test $trap_name

	check_err $? "Trap stats not idle when packets should not be dropped"

	devlink_trap_group_stats_idle_test $group_name

	check_err $? "Trap group stats not idle with when packets should not be dropped"



	tc_check_packets "dev $swp2 egress" 101 0

	check_fail $? "Packets not forwarded when should"



	devlink_trap_action_set $trap_name "drop"



	l2_drops_cleanup $mz_pid



	bridge vlan del vid $vid dev $swp1 master

	bridge vlan del vid $vid dev $swp2 master

}



ingress_stp_filter_listening_test()

{

	local state=$1; shift



	RET=0



	__ingress_stp_filter_test $state



	log_test "Ingress STP filter - listening state"

}



ingress_stp_filter_learning_test()

{

	local state=$1; shift



	RET=0



	__ingress_stp_filter_test $state



	log_test "Ingress STP filter - learning state"

}



ingress_stp_filter_test()

{

	ingress_stp_filter_listening_test 1

	ingress_stp_filter_learning_test 2

}



port_list_is_empty_uc_test()

{

	local trap_name="port_list_is_empty"

	local dmac=de:ad:be:ef:13:37

	local group_name="l2_drops"

	local mz_pid



	# Disable unicast flooding on both ports, so that packets cannot egress

	# any port.

	ip link set dev $swp1 type bridge_slave flood off

	ip link set dev $swp2 type bridge_slave flood off



	RET=0



	tc filter add dev $swp2 egress protocol ip pref 1 handle 101 \

		flower dst_mac $dmac action drop



	$MZ $h1 -c 0 -p 100 -a own -b $dmac -t ip -d 1msec -q &

	mz_pid=$!



	l2_drops_test $trap_name $group_name



	# Allow packets to be flooded to one port.

	ip link set dev $swp2 type bridge_slave flood on

	devlink_trap_action_set $trap_name "trap"



	devlink_trap_stats_idle_test $trap_name

	check_err $? "Trap stats not idle when packets should not be dropped"

	devlink_trap_group_stats_idle_test $group_name

	check_err $? "Trap group stats not idle with when packets should not be dropped"



	tc_check_packets "dev $swp2 egress" 101 0

	check_fail $? "Packets not forwarded when should"



	devlink_trap_action_set $trap_name "drop"



	log_test "Port list is empty - unicast"



	l2_drops_cleanup $mz_pid



	ip link set dev $swp1 type bridge_slave flood on

}



port_list_is_empty_mc_test()

{

	local trap_name="port_list_is_empty"

	local dmac=01:00:5e:00:00:01

	local group_name="l2_drops"

	local dip=239.0.0.1

	local mz_pid



	# Disable multicast flooding on both ports, so that packets cannot

	# egress any port. We also need to flush IP addresses from the bridge

	# in order to prevent packets from being flooded to the router port.

	ip link set dev $swp1 type bridge_slave mcast_flood off

	ip link set dev $swp2 type bridge_slave mcast_flood off

	ip address flush dev br0



	RET=0



	tc filter add dev $swp2 egress protocol ip pref 1 handle 101 \

		flower dst_mac $dmac action drop



	$MZ $h1 -c 0 -p 100 -a own -b $dmac -t ip -B $dip -d 1msec -q &

	mz_pid=$!



	l2_drops_test $trap_name $group_name



	# Allow packets to be flooded to one port.

	ip link set dev $swp2 type bridge_slave mcast_flood on

	devlink_trap_action_set $trap_name "trap"



	devlink_trap_stats_idle_test $trap_name

	check_err $? "Trap stats not idle when packets should not be dropped"

	devlink_trap_group_stats_idle_test $group_name

	check_err $? "Trap group stats not idle with when packets should not be dropped"



	tc_check_packets "dev $swp2 egress" 101 0

	check_fail $? "Packets not forwarded when should"



	devlink_trap_action_set $trap_name "drop"



	log_test "Port list is empty - multicast"



	l2_drops_cleanup $mz_pid



	ip link set dev $swp1 type bridge_slave mcast_flood on

}



port_list_is_empty_test()

{

	port_list_is_empty_uc_test

	port_list_is_empty_mc_test

}



port_loopback_filter_uc_test()

{

	local trap_name="port_loopback_filter"

	local dmac=de:ad:be:ef:13:37

	local group_name="l2_drops"

	local mz_pid



	# Make sure packets can only egress the input port.

	ip link set dev $swp2 type bridge_slave flood off



	RET=0



	tc filter add dev $swp2 egress protocol ip pref 1 handle 101 \

		flower dst_mac $dmac action drop



	$MZ $h1 -c 0 -p 100 -a own -b $dmac -t ip -d 1msec -q &

	mz_pid=$!



	l2_drops_test $trap_name $group_name



	# Allow packets to be flooded.

	ip link set dev $swp2 type bridge_slave flood on

	devlink_trap_action_set $trap_name "trap"



	devlink_trap_stats_idle_test $trap_name

	check_err $? "Trap stats not idle when packets should not be dropped"

	devlink_trap_group_stats_idle_test $group_name

	check_err $? "Trap group stats not idle with when packets should not be dropped"



	tc_check_packets "dev $swp2 egress" 101 0

	check_fail $? "Packets not forwarded when should"



	devlink_trap_action_set $trap_name "drop"



	log_test "Port loopback filter - unicast"



	l2_drops_cleanup $mz_pid

}



port_loopback_filter_test()

{

	port_loopback_filter_uc_test

}



trap cleanup EXIT



setup_prepare

setup_wait



tests_run



exit $EXIT_STATUS