selftests: net: Add a VLAN bridge binding selftest

Add a test that exercises bridge binding.

Signed-off-by: Petr Machata <petrm@nvidia.com>
Reviewed-by: Ido Schimmel <idosch@nvidia.com>
Acked-by: Nikolay Aleksandrov <razor@blackwall.org>
Link: https://patch.msgid.link/baf7244fd1fe223a6d93e027584fa9f99dee982c.1734540770.git.petrm@nvidia.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

diff --git a/tools/testing/selftests/net/Makefile b/tools/testing/selftests/net/Makefile
index f09bd96cc978b39f2b8c5be0ddfcccff4721471f..73ee88d6b043004be23b444de667a1d99a6045de 100644 (file)
--- a/tools/testing/selftests/net/Makefile
+++ b/tools/testing/selftests/net/Makefile
@@ -96,6 +96,7 @@ TEST_PROGS += test_bridge_backup_port.sh
 TEST_PROGS += fdb_flush.sh fdb_notify.sh
 TEST_PROGS += fq_band_pktlimit.sh
 TEST_PROGS += vlan_hw_filter.sh
+TEST_PROGS += vlan_bridge_binding.sh
 TEST_PROGS += bpf_offload.py
 TEST_PROGS += ipv6_route_update_soft_lockup.sh
 TEST_PROGS += busy_poll_test.sh

diff --git a/tools/testing/selftests/net/vlan_bridge_binding.sh b/tools/testing/selftests/net/vlan_bridge_binding.sh
new file mode 100755 (executable)
index 0000000..e7cb8c6
--- /dev/null
+++ b/tools/testing/selftests/net/vlan_bridge_binding.sh
@@ -0,0 +1,256 @@
+#!/bin/bash
+# SPDX-License-Identifier: GPL-2.0
+
+source lib.sh
+
+ALL_TESTS="
+       test_binding_on
+       test_binding_off
+       test_binding_toggle_on
+       test_binding_toggle_off
+       test_binding_toggle_on_when_upper_down
+       test_binding_toggle_off_when_upper_down
+       test_binding_toggle_on_when_lower_down
+       test_binding_toggle_off_when_lower_down
+"
+
+setup_prepare()
+{
+       local port
+
+       ip_link_add br up type bridge vlan_filtering 1
+
+       for port in d1 d2 d3; do
+               ip_link_add $port type veth peer name r$port
+               ip_link_set_up $port
+               ip_link_set_up r$port
+               ip_link_set_master $port br
+       done
+
+       bridge_vlan_add vid 11 dev br self
+       bridge_vlan_add vid 11 dev d1 master
+
+       bridge_vlan_add vid 12 dev br self
+       bridge_vlan_add vid 12 dev d2 master
+
+       bridge_vlan_add vid 13 dev br self
+       bridge_vlan_add vid 13 dev d1 master
+       bridge_vlan_add vid 13 dev d2 master
+
+       bridge_vlan_add vid 14 dev br self
+       bridge_vlan_add vid 14 dev d1 master
+       bridge_vlan_add vid 14 dev d2 master
+       bridge_vlan_add vid 14 dev d3 master
+}
+
+operstate_is()
+{
+       local dev=$1; shift
+       local expect=$1; shift
+
+       local operstate=$(ip -j link show $dev | jq -r .[].operstate)
+       if [[ $operstate == UP ]]; then
+               operstate=1
+       elif [[ $operstate == DOWN || $operstate == LOWERLAYERDOWN ]]; then
+               operstate=0
+       fi
+       echo -n $operstate
+       [[ $operstate == $expect ]]
+}
+
+check_operstate()
+{
+       local dev=$1; shift
+       local expect=$1; shift
+       local operstate
+
+       operstate=$(busywait 1000 \
+                       operstate_is "$dev" "$expect")
+       check_err $? "Got operstate of $operstate, expected $expect"
+}
+
+add_one_vlan()
+{
+       local link=$1; shift
+       local id=$1; shift
+
+       ip_link_add $link.$id link $link type vlan id $id "$@"
+}
+
+add_vlans()
+{
+       add_one_vlan br 11 "$@"
+       add_one_vlan br 12 "$@"
+       add_one_vlan br 13 "$@"
+       add_one_vlan br 14 "$@"
+}
+
+set_vlans()
+{
+       ip link set dev br.11 "$@"
+       ip link set dev br.12 "$@"
+       ip link set dev br.13 "$@"
+       ip link set dev br.14 "$@"
+}
+
+down_netdevs()
+{
+       local dev
+
+       for dev in "$@"; do
+               ip_link_set_down $dev
+       done
+}
+
+check_operstates()
+{
+       local opst_11=$1; shift
+       local opst_12=$1; shift
+       local opst_13=$1; shift
+       local opst_14=$1; shift
+
+       check_operstate br.11 $opst_11
+       check_operstate br.12 $opst_12
+       check_operstate br.13 $opst_13
+       check_operstate br.14 $opst_14
+}
+
+do_test_binding()
+{
+       local inject=$1; shift
+       local what=$1; shift
+       local opsts_d1=$1; shift
+       local opsts_d2=$1; shift
+       local opsts_d12=$1; shift
+       local opsts_d123=$1; shift
+
+       RET=0
+
+       defer_scope_push
+               down_netdevs d1
+               $inject
+               check_operstates $opsts_d1
+       defer_scope_pop
+
+       defer_scope_push
+               down_netdevs d2
+               $inject
+               check_operstates $opsts_d2
+       defer_scope_pop
+
+       defer_scope_push
+               down_netdevs d1 d2
+               $inject
+               check_operstates $opsts_d12
+       defer_scope_pop
+
+       defer_scope_push
+               down_netdevs d1 d2 d3
+               $inject
+               check_operstates $opsts_d123
+       defer_scope_pop
+
+       log_test "Test bridge_binding $what"
+}
+
+do_test_binding_on()
+{
+       local inject=$1; shift
+       local what=$1; shift
+
+       do_test_binding "$inject" "$what"       \
+                       "0 1 1 1"               \
+                       "1 0 1 1"               \
+                       "0 0 0 1"               \
+                       "0 0 0 0"
+}
+
+do_test_binding_off()
+{
+       local inject=$1; shift
+       local what=$1; shift
+
+       do_test_binding "$inject" "$what"       \
+                       "1 1 1 1"               \
+                       "1 1 1 1"               \
+                       "1 1 1 1"               \
+                       "0 0 0 0"
+}
+
+test_binding_on()
+{
+       add_vlans bridge_binding on
+       set_vlans up
+       do_test_binding_on : "on"
+}
+
+test_binding_off()
+{
+       add_vlans bridge_binding off
+       set_vlans up
+       do_test_binding_off : "off"
+}
+
+test_binding_toggle_on()
+{
+       add_vlans bridge_binding off
+       set_vlans up
+       set_vlans type vlan bridge_binding on
+       do_test_binding_on : "off->on"
+}
+
+test_binding_toggle_off()
+{
+       add_vlans bridge_binding on
+       set_vlans up
+       set_vlans type vlan bridge_binding off
+       do_test_binding_off : "on->off"
+}
+
+dfr_set_binding_on()
+{
+       set_vlans type vlan bridge_binding on
+       defer set_vlans type vlan bridge_binding off
+}
+
+dfr_set_binding_off()
+{
+       set_vlans type vlan bridge_binding off
+       defer set_vlans type vlan bridge_binding on
+}
+
+test_binding_toggle_on_when_lower_down()
+{
+       add_vlans bridge_binding off
+       set_vlans up
+       do_test_binding_on dfr_set_binding_on "off->on when lower down"
+}
+
+test_binding_toggle_off_when_lower_down()
+{
+       add_vlans bridge_binding on
+       set_vlans up
+       do_test_binding_off dfr_set_binding_off "on->off when lower down"
+}
+
+test_binding_toggle_on_when_upper_down()
+{
+       add_vlans bridge_binding off
+       set_vlans type vlan bridge_binding on
+       set_vlans up
+       do_test_binding_on : "off->on when upper down"
+}
+
+test_binding_toggle_off_when_upper_down()
+{
+       add_vlans bridge_binding on
+       set_vlans type vlan bridge_binding off
+       set_vlans up
+       do_test_binding_off : "on->off when upper down"
+}
+
+trap defer_scopes_cleanup EXIT
+setup_prepare
+tests_run
+
+exit $EXIT_STATUS