path: root/tools/testing/selftests/drivers/net/mlxsw/rtnetlink.sh

#!/bin/bash
# SPDX-License-Identifier: GPL-2.0
#
# Test various interface configuration scenarios. Observe that configurations
# deemed valid by mlxsw succeed, invalid configurations fail and that no traces
# are produced. To prevent the test from passing in case traces are produced,
# the user can set the 'kernel.panic_on_warn' and 'kernel.panic_on_oops'
# sysctls in its environment.

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

ALL_TESTS="
	rif_vrf_set_addr_test
	rif_non_inherit_bridge_addr_test
	vlan_interface_deletion_test
	bridge_deletion_test
	bridge_vlan_flags_test
	vlan_1_test
	duplicate_vlans_test
	vlan_rif_refcount_test
	subport_rif_refcount_test
	subport_rif_lag_join_test
	vlan_dev_deletion_test
	lag_unlink_slaves_test
	lag_dev_deletion_test
	vlan_interface_uppers_test
	bridge_extern_learn_test
	neigh_offload_test
	nexthop_offload_test
	nexthop_obj_invalid_test
	nexthop_obj_offload_test
	nexthop_obj_group_offload_test
	nexthop_obj_bucket_offload_test
	nexthop_obj_blackhole_offload_test
	nexthop_obj_route_offload_test
	bridge_locked_port_test
	devlink_reload_test
"
NUM_NETIFS=2
: ${TIMEOUT:=20000} # ms
source $lib_dir/lib.sh
source $lib_dir/devlink_lib.sh

setup_prepare()
{
	swp1=${NETIFS[p1]}
	swp2=${NETIFS[p2]}

	ip link set dev $swp1 up
	ip link set dev $swp2 up
}

cleanup()
{
	pre_cleanup

	ip link set dev $swp2 down
	ip link set dev $swp1 down
}

rif_vrf_set_addr_test()
{
	# Test that it is possible to set an IP address on a VRF upper despite
	# its random MAC address.
	RET=0

	ip link add name vrf-test type vrf table 10
	ip link set dev $swp1 master vrf-test

	ip -4 address add 192.0.2.1/24 dev vrf-test
	check_err $? "failed to set IPv4 address on VRF"
	ip -6 address add 2001:db8:1::1/64 dev vrf-test
	check_err $? "failed to set IPv6 address on VRF"

	log_test "RIF - setting IP address on VRF"

	ip link del dev vrf-test
}

rif_non_inherit_bridge_addr_test()
{
	local swp2_mac=$(mac_get $swp2)

	RET=0

	# Create first RIF
	ip addr add dev $swp1 192.0.2.1/28
	check_err $?

	# Create a FID RIF
	ip link add name br1 up type bridge vlan_filtering 0
	ip link set dev br1 addr $swp2_mac
	ip link set dev $swp2 master br1
	ip addr add dev br1 192.0.2.17/28
	check_err $?

	# Prepare a device with a low MAC address
	ip link add name d up type dummy
	ip link set dev d addr 00:11:22:33:44:55

	# Attach the device to br1. Since the bridge address was set, it should
	# work.
	ip link set dev d master br1 &>/dev/null
	check_err $? "Could not attach a device with low MAC to a bridge with RIF"

	# Port MAC address change should be allowed for a bridge with set MAC.
	ip link set dev $swp2 addr 00:11:22:33:44:55
	check_err $? "Changing swp2's MAC address not permitted"

	log_test "RIF - attach port with bad MAC to bridge with set MAC"

	ip link set dev $swp2 addr $swp2_mac
	ip link del dev d
	ip link del dev br1
	ip addr del dev $swp1 192.0.2.1/28
}

vlan_interface_deletion_test()
{
	# Test that when a VLAN interface is deleted, its associated router
	# interface (RIF) is correctly deleted and not leaked. See commit
	# c360867ec46a ("mlxsw: spectrum: Delete RIF when VLAN device is
	# removed") for more details
	RET=0

	ip link add name br0 type bridge vlan_filtering 1
	ip link set dev $swp1 master br0

	ip link add link br0 name br0.10 type vlan id 10
	ip -6 address add 2001:db8:1::1/64 dev br0.10
	ip link del dev br0.10

	# If we leaked the previous RIF, then this should produce a trace
	ip link add link br0 name br0.20 type vlan id 20
	ip -6 address add 2001:db8:1::1/64 dev br0.20
	ip link del dev br0.20

	log_test "vlan interface deletion"

	ip link del dev br0
}

bridge_deletion_test()
{
	# Test that when a bridge with VLAN interfaces is deleted, we correctly
	# delete the associated RIFs. See commit 602b74eda813 ("mlxsw:
	# spectrum_switchdev: Do not leak RIFs when removing bridge") for more
	# details
	RET=0

	ip link add name br0 type bridge vlan_filtering 1
	ip link set dev $swp1 master br0
	ip -6 address add 2001:db8::1/64 dev br0

	ip link add link br0 name br0.10 type vlan id 10
	ip -6 address add 2001:db8:1::1/64 dev br0.10

	ip link add link br0 name br0.20 type vlan id 20
	ip -6 address add 2001:db8:2::1/64 dev br0.20

	ip link del dev br0

	# If we leaked previous RIFs, then this should produce a trace
	ip -6 address add 2001:db8:1::1/64 dev $swp1
	ip -6 address del 2001:db8:1::1/64 dev $swp1

	log_test "bridge deletion"
}

bridge_vlan_flags_test()
{
	# Test that when bridge VLAN flags are toggled, we do not take
	# unnecessary references on related structs. See commit 9e25826ffc94
	# ("mlxsw: spectrum_switchdev: Fix port_vlan refcounting") for more
	# details
	RET=0

	ip link add name br0 type bridge vlan_filtering 1
	ip link set dev $swp1 master br0

	bridge vlan add vid 10 dev $swp1 pvid untagged
	bridge vlan add vid 10 dev $swp1 untagged
	bridge vlan add vid 10 dev $swp1 pvid
	bridge vlan add vid 10 dev $swp1
	ip link del dev br0

	# If we did not handle references correctly, then this should produce a
	# trace
	devlink_reload

	log_test "bridge vlan flags"
}

vlan_1_test()
{
	# Test that VLAN 1 can be configured over mlxsw ports. In the past it
	# was used internally for untagged traffic. See commit 47bf9df2e820
	# ("mlxsw: spectrum: Forbid creation of VLAN 1 over port/LAG") for more
	# details
	RET=0

	ip link add link $swp1 name $swp1.1 type vlan id 1
	check_err $? "did not manage to create vlan 1 when should"

	log_test "vlan 1"

	ip link del dev $swp1.1
}

duplicate_vlans_test()
{
	# Test that on a given port a VLAN is only used once. Either as VLAN
	# in a VLAN-aware bridge or as a VLAN device
	RET=0

	ip link add name br0 type bridge vlan_filtering 1
	ip link set dev $swp1 master br0
	bridge vlan add vid 10 dev $swp1

	ip link add link $swp1 name $swp1.10 type vlan id 10 &> /dev/null
	check_fail $? "managed to create vlan device when should not"

	bridge vlan del vid 10 dev $swp1
	ip link add link $swp1 name $swp1.10 type vlan id 10
	check_err $? "did not manage to create vlan de