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selftests: router_bridge_lag: Add a new selftest
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Add a selftest to verify that routing through a bridge works when LAG is
used instead of physical ports.

Signed-off-by: Petr Machata <petrm@nvidia.com>
Reviewed-by: Danielle Ratson <danieller@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Petr Machata authored and David S. Miller committed Aug 2, 2023
1 parent 49e15de commit 3f0c4e7
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1 change: 1 addition & 0 deletions tools/testing/selftests/net/forwarding/Makefile
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Expand Up @@ -65,6 +65,7 @@ TEST_PROGS = bridge_igmp.sh \
q_in_vni.sh \
router_bridge.sh \
router_bridge_1d.sh \
router_bridge_lag.sh \
router_bridge_vlan.sh \
router_bridge_vlan_upper.sh \
router_bridge_pvid_vlan_upper.sh \
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323 changes: 323 additions & 0 deletions tools/testing/selftests/net/forwarding/router_bridge_lag.sh
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#!/bin/bash
# SPDX-License-Identifier: GPL-2.0

# +----------------------------+ +--------------------------+
# | H1 (vrf) | | H2 (vrf) |
# | | | |
# | + LAG1 (team) | | + LAG4 (team) |
# | | 192.0.2.1/28 | | | 192.0.2.130/28 |
# | | 2001:db8:1::1/64 | | | 2001:db8:2::2/64 |
# | __^___ | | __^_____ |
# | / \ | | / \ |
# | + $h1 + $h4 | | + $h2 + $h3 |
# | | | | | | | |
# +----|--------|--------------+ +-|----------|-------------+
# | | | |
# +----|--------|------------------------------------|----------|-------------+
# | SW | | | | |
# | + $swp1 + $swp4 + $swp2 + $swp3 |
# | \__ ___/ \__ _____/ |
# | v v |
# | +------|-------------------------------+ | |
# | | + LAG2 BR1 (802.1q) | + LAG3 (team) |
# | | (team) 192.0.2.2/28 | 192.0.2.129/28 |
# | | 2001:db8:1::2/64 | 2001:db8:2::1/64 |
# | | | |
# | +--------------------------------------+ |
# +---------------------------------------------------------------------------+

: ${ALL_TESTS:="
ping_ipv4
ping_ipv6
$(: exercise remastering of LAG2 slaves )
config_deslave_swp4
config_wait
ping_ipv4
ping_ipv6
config_enslave_swp4
config_deslave_swp1
config_wait
ping_ipv4
ping_ipv6
config_deslave_swp4
config_enslave_swp1
config_enslave_swp4
config_wait
ping_ipv4
ping_ipv6
$(: exercise remastering of LAG2 itself )
config_remaster_lag2
config_wait
ping_ipv4
ping_ipv6
$(: exercise remastering of LAG3 slaves )
config_deslave_swp2
config_wait
ping_ipv4
ping_ipv6
config_enslave_swp2
config_deslave_swp3
config_wait
ping_ipv4
ping_ipv6
config_deslave_swp2
config_enslave_swp3
config_enslave_swp2
config_wait
ping_ipv4
ping_ipv6
$(: move LAG3 to a bridge and then out )
config_remaster_lag3
config_wait
ping_ipv4
ping_ipv6
"}
NUM_NETIFS=8
: ${lib_dir:=.}
source $lib_dir/lib.sh
$EXTRA_SOURCE

h1_create()
{
team_create lag1 lacp
ip link set dev lag1 address $(mac_get $h1)
ip link set dev $h1 master lag1
ip link set dev $h4 master lag1
simple_if_init lag1 192.0.2.1/28 2001:db8:1::1/64
ip link set dev $h1 up
ip link set dev $h4 up
ip -4 route add 192.0.2.128/28 vrf vlag1 nexthop via 192.0.2.2
ip -6 route add 2001:db8:2::/64 vrf vlag1 nexthop via 2001:db8:1::2
}

h1_destroy()
{
ip -6 route del 2001:db8:2::/64 vrf vlag1
ip -4 route del 192.0.2.128/28 vrf vlag1
ip link set dev $h4 down
ip link set dev $h1 down
simple_if_fini lag1 192.0.2.1/28 2001:db8:1::1/64
ip link set dev $h4 nomaster
ip link set dev $h1 nomaster
team_destroy lag1
}

h2_create()
{
team_create lag4 lacp
ip link set dev lag4 address $(mac_get $h2)
ip link set dev $h2 master lag4
ip link set dev $h3 master lag4
simple_if_init lag4 192.0.2.130/28 2001:db8:2::2/64
ip link set dev $h2 up
ip link set dev $h3 up
ip -4 route add 192.0.2.0/28 vrf vlag4 nexthop via 192.0.2.129
ip -6 route add 2001:db8:1::/64 vrf vlag4 nexthop via 2001:db8:2::1
}

h2_destroy()
{
ip -6 route del 2001:db8:1::/64 vrf vlag4
ip -4 route del 192.0.2.0/28 vrf vlag4
ip link set dev $h3 down
ip link set dev $h2 down
simple_if_fini lag4 192.0.2.130/28 2001:db8:2::2/64
ip link set dev $h3 nomaster
ip link set dev $h2 nomaster
team_destroy lag4
}

router_create()
{
team_create lag2 lacp
ip link set dev lag2 address $(mac_get $swp1)
ip link set dev $swp1 master lag2
ip link set dev $swp4 master lag2

ip link add name br1 address $(mac_get lag2) \
type bridge vlan_filtering 1
ip link set dev lag2 master br1

ip link set dev $swp1 up
ip link set dev $swp4 up
ip link set dev br1 up

__addr_add_del br1 add 192.0.2.2/28 2001:db8:1::2/64

team_create lag3 lacp
ip link set dev lag3 address $(mac_get $swp2)
ip link set dev $swp2 master lag3
ip link set dev $swp3 master lag3
ip link set dev $swp2 up
ip link set dev $swp3 up
__addr_add_del lag3 add 192.0.2.129/28 2001:db8:2::1/64
}

router_destroy()
{
__addr_add_del lag3 del 192.0.2.129/28 2001:db8:2::1/64
ip link set dev $swp3 down
ip link set dev $swp2 down
ip link set dev $swp3 nomaster
ip link set dev $swp2 nomaster
team_destroy lag3

__addr_add_del br1 del 192.0.2.2/28 2001:db8:1::2/64

ip link set dev $swp4 down
ip link set dev $swp1 down
ip link set dev br1 down

ip link set dev lag2 nomaster
ip link del dev br1

ip link set dev $swp4 nomaster
ip link set dev $swp1 nomaster
team_destroy lag2
}

config_remaster_lag2()
{
log_info "Remaster bridge slave"

ip link set dev lag2 nomaster
sleep 2
ip link set dev lag2 master br1
}

config_remaster_lag3()
{
log_info "Move lag3 to the bridge, then out again"

ip link set dev lag3 master br1
sleep 2
ip link set dev lag3 nomaster
}

config_deslave()
{
local netdev=$1; shift

log_info "Deslave $netdev"
ip link set dev $netdev down
ip link set dev $netdev nomaster
ip link set dev $netdev up
}

config_deslave_swp1()
{
config_deslave $swp1
}

config_deslave_swp2()
{
config_deslave $swp2
}

config_deslave_swp3()
{
config_deslave $swp3
}

config_deslave_swp4()
{
config_deslave $swp4
}

config_enslave()
{
local netdev=$1; shift
local master=$1; shift

log_info "Enslave $netdev to $master"
ip link set dev $netdev down
ip link set dev $netdev master $master
ip link set dev $netdev up
}

config_enslave_swp1()
{
config_enslave $swp1 lag2
}

config_enslave_swp2()
{
config_enslave $swp2 lag3
}

config_enslave_swp3()
{
config_enslave $swp3 lag3
}

config_enslave_swp4()
{
config_enslave $swp4 lag2
}

config_wait()
{
setup_wait_dev lag2
setup_wait_dev lag3
}

setup_prepare()
{
h1=${NETIFS[p1]}
swp1=${NETIFS[p2]}

swp2=${NETIFS[p3]}
h2=${NETIFS[p4]}

swp3=${NETIFS[p5]}
h3=${NETIFS[p6]}

h4=${NETIFS[p7]}
swp4=${NETIFS[p8]}

vrf_prepare

h1_create
h2_create

router_create

forwarding_enable
}

cleanup()
{
pre_cleanup

forwarding_restore

router_destroy

h2_destroy
h1_destroy

vrf_cleanup
}

ping_ipv4()
{
ping_test lag1 192.0.2.130
}

ping_ipv6()
{
ping6_test lag1 2001:db8:2::2
}

trap cleanup EXIT

setup_prepare
setup_wait

tests_run

exit $EXIT_STATUS

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