[PATCH net-next mlxsw] selftests: forwarding: Test mirror-to-gretap w/ UL team LACP
Petr Machata
petrm at mellanox.com
Fri Jun 29 01:08:23 AEST 2018
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 <petrm at mellanox.com>
---
Notes:
This is a test for the recently-posted ERSPAN LACP patchset. I'll post
this directly upstream together with the other LAG test when the LACP
fixes are accepted.
.../net/forwarding/mirror_gre_lag_lacp.sh | 285 +++++++++++++++++++++
1 file changed, 285 insertions(+)
create mode 100755 tools/testing/selftests/net/forwarding/mirror_gre_lag_lacp.sh
diff --git a/tools/testing/selftests/net/forwarding/mirror_gre_lag_lacp.sh b/tools/testing/selftests/net/forwarding/mirror_gre_lag_lacp.sh
new file mode 100755
index 000000000000..9edf4cb104a8
--- /dev/null
+++ b/tools/testing/selftests/net/forwarding/mirror_gre_lag_lacp.sh
@@ -0,0 +1,285 @@
+#!/bin/bash
+# SPDX-License-Identifier: GPL-2.0
+
+# Test for "tc action mirred egress mirror" when the underlay route points at a
+# team device.
+#
+# +----------------------+ +----------------------+
+# | H1 | | H2 |
+# | + $h1.333 | | $h1.555 + |
+# | | 192.0.2.1/28 | | 192.0.2.18/28 | |
+# +----|-----------------+ +----------------|-----+
+# | $h1 |
+# +---------------------------------+------------------------------+
+# |
+# +--------------------------------------|------------------------------------+
+# | SW o---> mirror |
+# | | |
+# | +----------------------------------+------------------------------+ |
+# | | $swp1 | |
+# | + $swp1.333 $swp1.555 + |
+# | 192.0.2.2/28 192.0.2.17/28 |
+# | |
+# | |
+# | + gt4 (gretap) ,-> + lag1 (team) |
+# | loc=192.0.2.129 | | 192.0.2.129/28 |
+# | rem=192.0.2.130 --' | |
+# | ttl=100 | |
+# | tos=inherit | |
+# | _____________________|______________________ |
+# | / \ |
+# | / \ |
+# | + $swp3 + $swp4 |
+# +---|------------------------------------------------|----------------------+
+# | |
+# +---|------------------------------------------------|----------------------+
+# | + $h3 + $h4 H3 |
+# | \ / |
+# | \____________________________________________/ |
+# | | |
+# | + lag2 (team) |
+# | 192.0.2.130/28 |
+# | |
+# +---------------------------------------------------------------------------+
+
+ALL_TESTS="
+ test_mirror_gretap_first
+ test_mirror_gretap_second
+"
+
+NUM_NETIFS=6
+source lib.sh
+source mirror_lib.sh
+source mirror_gre_lib.sh
+
+require_command $ARPING
+
+vlan_host_create()
+{
+ local if_name=$1; shift
+ local vid=$1; shift
+ local vrf_name=$1; shift
+ local ips=("${@}")
+
+ vrf_create $vrf_name
+ ip link set dev $vrf_name up
+ vlan_create $if_name $vid $vrf_name "${ips[@]}"
+}
+
+vlan_host_destroy()
+{
+ local if_name=$1; shift
+ local vid=$1; shift
+ local vrf_name=$1; shift
+
+ vlan_destroy $if_name $vid
+ ip link set dev $vrf_name down
+ vrf_destroy $vrf_name
+}
+
+h1_create()
+{
+ vlan_host_create $h1 333 vrf-h1 192.0.2.1/28
+ ip -4 route add 192.0.2.16/28 vrf vrf-h1 nexthop via 192.0.2.2
+}
+
+h1_destroy()
+{
+ ip -4 route del 192.0.2.16/28 vrf vrf-h1
+ vlan_host_destroy $h1 333 vrf-h1
+}
+
+h2_create()
+{
+ vlan_host_create $h1 555 vrf-h2 192.0.2.18/28
+ ip -4 route add 192.0.2.0/28 vrf vrf-h2 nexthop via 192.0.2.17
+}
+
+h2_destroy()
+{
+ ip -4 route del 192.0.2.0/28 vrf vrf-h2
+ vlan_host_destroy $h1 555 vrf-h2
+}
+
+h3_create_team()
+{
+ team_create lag2 lacp $h3 $h4
+ __simple_if_init lag2 vrf-h3 192.0.2.130/32
+ ip -4 route add vrf vrf-h3 192.0.2.129/32 dev lag2
+}
+
+h3_destroy_team()
+{
+ ip -4 route del vrf vrf-h3 192.0.2.129/32 dev lag2
+ __simple_if_fini lag2 192.0.2.130/32
+ team_destroy lag2
+
+ ip link set dev $h3 down
+ ip link set dev $h4 down
+}
+
+h3_create()
+{
+ vrf_create vrf-h3
+ ip link set dev vrf-h3 up
+ tc qdisc add dev $h3 clsact
+ tc qdisc add dev $h4 clsact
+ h3_create_team
+}
+
+h3_destroy()
+{
+ h3_destroy_team
+ tc qdisc del dev $h4 clsact
+ tc qdisc del dev $h3 clsact
+ ip link set dev vrf-h3 down
+ vrf_destroy vrf-h3
+}
+
+switch_create()
+{
+ ip link set dev $swp1 up
+ tc qdisc add dev $swp1 clsact
+ vlan_create $swp1 333 "" 192.0.2.2/28
+ vlan_create $swp1 555 "" 192.0.2.17/28
+
+ tunnel_create gt4 gretap 192.0.2.129 192.0.2.130 \
+ ttl 100 tos inherit
+
+ ip link set dev $swp3 up
+ ip link set dev $swp4 up
+ team_create lag1 lacp $swp3 $swp4
+ __addr_add_del lag1 add 192.0.2.129/32
+ ip -4 route add 192.0.2.130/32 dev lag1
+}
+
+switch_destroy()
+{
+ ip -4 route del 192.0.2.130/32 dev lag1
+ __addr_add_del lag1 del 192.0.2.129/32
+ team_destroy lag1
+
+ ip link set dev $swp4 down
+ ip link set dev $swp3 down
+
+ tunnel_destroy gt4
+
+ vlan_destroy $swp1 555
+ vlan_destroy $swp1 333
+ tc qdisc del dev $swp1 clsact
+ ip link set dev $swp1 down
+}
+
+setup_prepare()
+{
+ h1=${NETIFS[p1]}
+ swp1=${NETIFS[p2]}
+
+ swp3=${NETIFS[p3]}
+ h3=${NETIFS[p4]}
+
+ swp4=${NETIFS[p5]}
+ h4=${NETIFS[p6]}
+
+ vrf_prepare
+
+ ip link set dev $h1 up
+ h1_create
+ h2_create
+ h3_create
+ switch_create
+
+ trap_install $h3 ingress
+ trap_install $h4 ingress
+}
+
+cleanup()
+{
+ pre_cleanup
+
+ trap_uninstall $h4 ingress
+ trap_uninstall $h3 ingress
+
+ switch_destroy
+ h3_destroy
+ h2_destroy
+ h1_destroy
+ ip link set dev $h1 down
+
+ vrf_cleanup
+}
+
+test_lag_slave()
+{
+ local up_dev=$1; shift
+ local down_dev=$1; shift
+ local what=$1; shift
+
+ RET=0
+
+ mirror_install $swp1 ingress gt4 \
+ "proto 802.1q flower vlan_id 333 $tcflags"
+
+ # Move $down_dev away from the team. That will prompt change in
+ # txability of the connected device, without changing its upness. The
+ # driver should notice the txability change and move the traffic to the
+ # other slave.
+ ip link set dev $down_dev nomaster
+ sleep 2
+ mirror_test vrf-h1 192.0.2.1 192.0.2.18 $up_dev 1 10
+
+ # Test lack of connectivity when neither slave is txable.
+ ip link set dev $up_dev nomaster
+ sleep 2
+ mirror_test vrf-h1 192.0.2.1 192.0.2.18 $h3 1 0
+ mirror_test vrf-h1 192.0.2.1 192.0.2.18 $h4 1 0
+ mirror_uninstall $swp1 ingress
+
+ # Recreate H3's team device, because mlxsw, which this test is
+ # predominantly mean to test, requires a bottom-up construction and
+ # doesn't allow enslavement to a device that already has an upper.
+ h3_destroy_team
+ h3_create_team
+ # Wait for ${h,swp}{3,4}.
+ setup_wait
+
+ log_test "$what ($tcflags)"
+}
+
+test_mirror_gretap_first()
+{
+ test_lag_slave $h3 $h4 "mirror to gretap: LAG first slave"
+}
+
+test_mirror_gretap_second()
+{
+ test_lag_slave $h4 $h3 "mirror to gretap: LAG second slave"
+}
+
+test_all()
+{
+ slow_path_trap_install $swp1 ingress
+ slow_path_trap_install $swp1 egress
+
+ tests_run
+
+ slow_path_trap_uninstall $swp1 egress
+ slow_path_trap_uninstall $swp1 ingress
+}
+
+trap cleanup EXIT
+
+setup_prepare
+setup_wait
+
+tcflags="skip_hw"
+test_all
+
+if ! tc_offload_check; then
+ echo "WARN: Could not test offloaded functionality"
+else
+ tcflags="skip_sw"
+ test_all
+fi
+
+exit $EXIT_STATUS
--
2.4.11
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