selftests: mlxsw: Add a test case for devlink-trap

#!/bin/bash

# SPDX-License-Identifier: GPL-2.0

#

# Test generic devlink-trap functionality over mlxsw. These tests are not

# specific to a single trap, but do not check the devlink-trap common

# infrastructure either.

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

ALL_TESTS="

	dev_del_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

}

switch_destroy()

{

	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

}

dev_del_test()

{

	local trap_name="source_mac_is_multicast"

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

	local num_iter=5

	local mz_pid

	local i

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

	mz_pid=$!

	# The purpose of this test is to make sure we correctly dismantle a

	# port while packets are trapped from it. This is done by reloading the

	# the driver while the 'ingress_smac_mc_drop' trap is triggered.

	RET=0

	for i in $(seq 1 $num_iter); do

		log_info "Iteration $i / $num_iter"

		devlink_trap_action_set $trap_name "trap"

		sleep 1

		devlink_reload

		# Allow netdevices to be re-created following the reload

		sleep 20

		cleanup

		setup_prepare

		setup_wait

	done

	log_test "Device delete"

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

}

trap cleanup EXIT

setup_prepare

setup_wait

tests_run

exit $EXIT_STATUS