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selftests: forwarding: Test mirror-to-gretap w/ UL team LACP
This tests mirror-to-gretap when an underlay packet path includes a team device which is not in loadbalance mode, but in LACP mode. The test manipulates LAG membership to achieve changes in txability, thus making sure that a driver that offloads mirror-to-gretap doesn't just consider upness of a device. Signed-off-by: Petr Machata <[email protected]> Signed-off-by: David S. Miller <[email protected]>
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‎tools/testing/selftests/net/forwarding/mirror_gre_lag_lacp.sh

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#!/bin/bash
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# SPDX-License-Identifier: GPL-2.0
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# Test for "tc action mirred egress mirror" when the underlay route points at a
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# team device.
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#
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# +----------------------+ +----------------------+
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# | H1 | | H2 |
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# | + $h1.333 | | $h1.555 + |
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# | | 192.0.2.1/28 | | 192.0.2.18/28 | |
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# +----|-----------------+ +----------------|-----+
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# | $h1 |
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# +---------------------------------+------------------------------+
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# |
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# +--------------------------------------|------------------------------------+
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# | SW o---> mirror |
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# | | |
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# | +----------------------------------+------------------------------+ |
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# | | $swp1 | |
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# | + $swp1.333 $swp1.555 + |
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# | 192.0.2.2/28 192.0.2.17/28 |
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# | |
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# | |
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# | + gt4 (gretap) ,-> + lag1 (team) |
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# | loc=192.0.2.129 | | 192.0.2.129/28 |
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# | rem=192.0.2.130 --' | |
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# | ttl=100 | |
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# | tos=inherit | |
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# | _____________________|______________________ |
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# | / \ |
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# | / \ |
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# | + $swp3 + $swp4 |
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# +---|------------------------------------------------|----------------------+
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# | |
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# +---|------------------------------------------------|----------------------+
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# | + $h3 + $h4 H3 |
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# | \ / |
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# | \____________________________________________/ |
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# | | |
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# | + lag2 (team) |
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# | 192.0.2.130/28 |
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# | |
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# +---------------------------------------------------------------------------+
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ALL_TESTS="
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test_mirror_gretap_first
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test_mirror_gretap_second
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"
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NUM_NETIFS=6
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source lib.sh
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source mirror_lib.sh
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source mirror_gre_lib.sh
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require_command $ARPING
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vlan_host_create()
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{
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local if_name=$1; shift
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local vid=$1; shift
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local vrf_name=$1; shift
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local ips=("${@}")
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vrf_create $vrf_name
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ip link set dev $vrf_name up
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vlan_create $if_name $vid $vrf_name "${ips[@]}"
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}
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vlan_host_destroy()
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{
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local if_name=$1; shift
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local vid=$1; shift
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local vrf_name=$1; shift
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vlan_destroy $if_name $vid
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ip link set dev $vrf_name down
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vrf_destroy $vrf_name
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}
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h1_create()
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{
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vlan_host_create $h1 333 vrf-h1 192.0.2.1/28
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ip -4 route add 192.0.2.16/28 vrf vrf-h1 nexthop via 192.0.2.2
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}
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h1_destroy()
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{
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ip -4 route del 192.0.2.16/28 vrf vrf-h1
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vlan_host_destroy $h1 333 vrf-h1
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}
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h2_create()
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{
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vlan_host_create $h1 555 vrf-h2 192.0.2.18/28
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ip -4 route add 192.0.2.0/28 vrf vrf-h2 nexthop via 192.0.2.17
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}
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h2_destroy()
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{
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ip -4 route del 192.0.2.0/28 vrf vrf-h2
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vlan_host_destroy $h1 555 vrf-h2
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}
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h3_create_team()
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{
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team_create lag2 lacp $h3 $h4
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__simple_if_init lag2 vrf-h3 192.0.2.130/32
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ip -4 route add vrf vrf-h3 192.0.2.129/32 dev lag2
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}
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h3_destroy_team()
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{
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ip -4 route del vrf vrf-h3 192.0.2.129/32 dev lag2
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__simple_if_fini lag2 192.0.2.130/32
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team_destroy lag2
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ip link set dev $h3 down
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ip link set dev $h4 down
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}
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h3_create()
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{
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vrf_create vrf-h3
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ip link set dev vrf-h3 up
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tc qdisc add dev $h3 clsact
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tc qdisc add dev $h4 clsact
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h3_create_team
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}
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h3_destroy()
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{
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h3_destroy_team
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tc qdisc del dev $h4 clsact
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tc qdisc del dev $h3 clsact
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ip link set dev vrf-h3 down
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vrf_destroy vrf-h3
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}
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switch_create()
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{
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ip link set dev $swp1 up
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tc qdisc add dev $swp1 clsact
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vlan_create $swp1 333 "" 192.0.2.2/28
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vlan_create $swp1 555 "" 192.0.2.17/28
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tunnel_create gt4 gretap 192.0.2.129 192.0.2.130 \
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ttl 100 tos inherit
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ip link set dev $swp3 up
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ip link set dev $swp4 up
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team_create lag1 lacp $swp3 $swp4
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__addr_add_del lag1 add 192.0.2.129/32
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ip -4 route add 192.0.2.130/32 dev lag1
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}
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switch_destroy()
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{
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ip -4 route del 192.0.2.130/32 dev lag1
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__addr_add_del lag1 del 192.0.2.129/32
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team_destroy lag1
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ip link set dev $swp4 down
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ip link set dev $swp3 down
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tunnel_destroy gt4
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vlan_destroy $swp1 555
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vlan_destroy $swp1 333
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tc qdisc del dev $swp1 clsact
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ip link set dev $swp1 down
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}
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setup_prepare()
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{
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h1=${NETIFS[p1]}
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swp1=${NETIFS[p2]}
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swp3=${NETIFS[p3]}
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h3=${NETIFS[p4]}
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swp4=${NETIFS[p5]}
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h4=${NETIFS[p6]}
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vrf_prepare
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ip link set dev $h1 up
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h1_create
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h2_create
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h3_create
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switch_create
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trap_install $h3 ingress
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trap_install $h4 ingress
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}
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cleanup()
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{
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pre_cleanup
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trap_uninstall $h4 ingress
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trap_uninstall $h3 ingress
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switch_destroy
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h3_destroy
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h2_destroy
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h1_destroy
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ip link set dev $h1 down
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vrf_cleanup
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}
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test_lag_slave()
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{
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local up_dev=$1; shift
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local down_dev=$1; shift
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local what=$1; shift
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RET=0
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mirror_install $swp1 ingress gt4 \
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"proto 802.1q flower vlan_id 333 $tcflags"
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# Move $down_dev away from the team. That will prompt change in
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# txability of the connected device, without changing its upness. The
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# driver should notice the txability change and move the traffic to the
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# other slave.
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ip link set dev $down_dev nomaster
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sleep 2
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mirror_test vrf-h1 192.0.2.1 192.0.2.18 $up_dev 1 10
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# Test lack of connectivity when neither slave is txable.
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ip link set dev $up_dev nomaster
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sleep 2
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mirror_test vrf-h1 192.0.2.1 192.0.2.18 $h3 1 0
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mirror_test vrf-h1 192.0.2.1 192.0.2.18 $h4 1 0
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mirror_uninstall $swp1 ingress
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# Recreate H3's team device, because mlxsw, which this test is
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# predominantly mean to test, requires a bottom-up construction and
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# doesn't allow enslavement to a device that already has an upper.
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h3_destroy_team
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h3_create_team
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# Wait for ${h,swp}{3,4}.
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setup_wait
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log_test "$what ($tcflags)"
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}
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test_mirror_gretap_first()
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{
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test_lag_slave $h3 $h4 "mirror to gretap: LAG first slave"
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}
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test_mirror_gretap_second()
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{
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test_lag_slave $h4 $h3 "mirror to gretap: LAG second slave"
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}
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test_all()
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{
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slow_path_trap_install $swp1 ingress
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slow_path_trap_install $swp1 egress
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tests_run
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slow_path_trap_uninstall $swp1 egress
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slow_path_trap_uninstall $swp1 ingress
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}
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trap cleanup EXIT
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setup_prepare
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setup_wait
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tcflags="skip_hw"
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test_all
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if ! tc_offload_check; then
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echo "WARN: Could not test offloaded functionality"
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else
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tcflags="skip_sw"
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test_all
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fi
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exit $EXIT_STATUS

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