[PATCH net-next 3/3] selftests: bonding: add test for LACP actor port priority

[Hangbin Liu <liuhangbin@gmail.com>]

Add a selftest to verify that per-port actor priority (ad_actor_port_prio)
is correctly applied and affects aggregator selection as expected.

Move cmd_jq from forwarding/lib.sh to net/lib.sh.

Signed-off-by: Hangbin Liu <liuhangbin@gmail.com>
---
 .../selftests/drivers/net/bonding/Makefile    |  3 +-
 .../drivers/net/bonding/bond_lacp_prio.sh     | 73 +++++++++++++++++++
 tools/testing/selftests/net/forwarding/lib.sh | 24 ------
 tools/testing/selftests/net/lib.sh            | 24 ++++++
 4 files changed, 99 insertions(+), 25 deletions(-)
 create mode 100755 tools/testing/selftests/drivers/net/bonding/bond_lacp_prio.sh

diff --git a/tools/testing/selftests/drivers/net/bonding/Makefile b/tools/testing/selftests/drivers/net/bonding/Makefile
index 2b10854e4b1e..32617a834a6b 100644
--- a/tools/testing/selftests/drivers/net/bonding/Makefile
+++ b/tools/testing/selftests/drivers/net/bonding/Makefile
@@ -10,7 +10,8 @@ TEST_PROGS := \
 	mode-2-recovery-updelay.sh \
 	bond_options.sh \
 	bond-eth-type-change.sh \
-	bond_macvlan_ipvlan.sh
+	bond_macvlan_ipvlan.sh \
+	bond_lacp_prio.sh
 
 TEST_FILES := \
 	lag_lib.sh \
diff --git a/tools/testing/selftests/drivers/net/bonding/bond_lacp_prio.sh b/tools/testing/selftests/drivers/net/bonding/bond_lacp_prio.sh
new file mode 100755
index 000000000000..a3f939d12143
--- /dev/null
+++ b/tools/testing/selftests/drivers/net/bonding/bond_lacp_prio.sh
@@ -0,0 +1,73 @@
+#!/bin/bash
+# SPDX-License-Identifier: GPL-2.0
+#
+# Testing if bond lacp per port priority works
+
+lib_dir=$(dirname "$0")
+# shellcheck disable=SC1091
+source "$lib_dir"/../../../net/lib.sh
+
+# create client, switch, backup switch netns
+setup_ns c_ns s_ns b_ns
+defer cleanup_all_ns
+
+# setup links
+# shellcheck disable=SC2154
+ip -n "${c_ns}" link add eth0 type veth peer name eth0 netns "${s_ns}"
+ip -n "${c_ns}" link add eth1 type veth peer name eth1 netns "${s_ns}"
+# shellcheck disable=SC2154
+ip -n "${c_ns}" link add eth2 type veth peer name eth0 netns "${b_ns}"
+ip -n "${c_ns}" link add eth3 type veth peer name eth1 netns "${b_ns}"
+
+ip -n "${c_ns}" link add bond0 type bond mode 802.3ad miimon 100 lacp_rate fast ad_select prio
+ip -n "${s_ns}" link add bond0 type bond mode 802.3ad miimon 100 lacp_rate fast
+ip -n "${b_ns}" link add bond0 type bond mode 802.3ad miimon 100 lacp_rate fast
+
+ip -n "${c_ns}" link set eth0 master bond0
+ip -n "${c_ns}" link set eth1 master bond0
+ip -n "${c_ns}" link set eth2 master bond0
+ip -n "${c_ns}" link set eth3 master bond0
+ip -n "${s_ns}" link set eth0 master bond0
+ip -n "${s_ns}" link set eth1 master bond0
+ip -n "${b_ns}" link set eth0 master bond0
+ip -n "${b_ns}" link set eth1 master bond0
+
+ip -n "${c_ns}" link set bond0 up
+ip -n "${s_ns}" link set bond0 up
+ip -n "${b_ns}" link set bond0 up
+
+# set ad actor port priority, default 255
+ip -n "${c_ns}" link set eth0 type bond_slave ad_actor_port_prio 1000
+prio=$(cmd_jq "ip -n ${c_ns} -d -j link show eth0" ".[].linkinfo.info_slave_data.ad_actor_port_prio")
+[ "$prio" -ne 1000 ] && RET=1
+ip -n "${c_ns}" link set eth2 type bond_slave ad_actor_port_prio 10
+prio=$(cmd_jq "ip -n ${c_ns} -d -j link show eth2" ".[].linkinfo.info_slave_data.ad_actor_port_prio")
+[ "$prio" -ne 10 ] && RET=1
+log_test "bond 802.3ad" "ad_actor_port_prio setting"
+
+# Trigger link state change to reselect the aggregator
+ip -n "${c_ns}" link set eth1 down
+ip -n "${c_ns}" link set eth1 up
+# the active agg should be connect to switch
+bond_agg_id=$(cmd_jq "ip -n ${c_ns} -d -j link show bond0" ".[].linkinfo.info_data.ad_info.aggregator")
+eth0_agg_id=$(cmd_jq "ip -n ${c_ns} -d -j link show eth0" ".[].linkinfo.info_slave_data.ad_aggregator_id")
+if [ "${bond_agg_id}" -ne "${eth0_agg_id}" ]; then
+	RET=1
+fi
+
+# Change the actor port prio and re-test
+ip -n "${c_ns}" link set eth0 type bond_slave ad_actor_port_prio 10
+ip -n "${c_ns}" link set eth2 type bond_slave ad_actor_port_prio 1000
+# Trigger link state change to reselect the aggregator
+ip -n "${c_ns}" link set eth1 down
+ip -n "${c_ns}" link set eth1 up
+# now the active agg should be connect to backup switch
+bond_agg_id=$(cmd_jq "ip -n ${c_ns} -d -j link show bond0" ".[].linkinfo.info_data.ad_info.aggregator")
+eth2_agg_id=$(cmd_jq "ip -n ${c_ns} -d -j link show eth2" ".[].linkinfo.info_slave_data.ad_aggregator_id")
+# shellcheck disable=SC2034
+if [ "${bond_agg_id}" -ne "${eth2_agg_id}" ]; then
+	RET=1
+fi
+log_test "bond 802.3ad" "ad_actor_port_prio switch"
+
+exit "${EXIT_STATUS}"
diff --git a/tools/testing/selftests/net/forwarding/lib.sh b/tools/testing/selftests/net/forwarding/lib.sh
index 508f3c700d71..09b63c6f3dbd 100644
--- a/tools/testing/selftests/net/forwarding/lib.sh
+++ b/tools/testing/selftests/net/forwarding/lib.sh
@@ -551,30 +551,6 @@ wait_for_dev()
         fi
 }
 
-cmd_jq()
-{
-	local cmd=$1
-	local jq_exp=$2
-	local jq_opts=$3
-	local ret
-	local output
-
-	output="$($cmd)"
-	# it the command fails, return error right away
-	ret=$?
-	if [[ $ret -ne 0 ]]; then
-		return $ret
-	fi
-	output=$(echo $output | jq -r $jq_opts "$jq_exp")
-	ret=$?
-	if [[ $ret -ne 0 ]]; then
-		return $ret
-	fi
-	echo $output
-	# return success only in case of non-empty output
-	[ ! -z "$output" ]
-}
-
 pre_cleanup()
 {
 	if [ "${PAUSE_ON_CLEANUP}" = "yes" ]; then
diff --git a/tools/testing/selftests/net/lib.sh b/tools/testing/selftests/net/lib.sh
index 006fdadcc4b9..4c278829e04c 100644
--- a/tools/testing/selftests/net/lib.sh
+++ b/tools/testing/selftests/net/lib.sh
@@ -616,3 +616,27 @@ wait_local_port_listen()
 		sleep 0.1
 	done
 }
+
+cmd_jq()
+{
+	local cmd=$1
+	local jq_exp=$2
+	local jq_opts=$3
+	local ret
+	local output
+
+	output="$($cmd)"
+	# it the command fails, return error right away
+	ret=$?
+	if [[ $ret -ne 0 ]]; then
+		return $ret
+	fi
+	output=$(echo $output | jq -r $jq_opts "$jq_exp")
+	ret=$?
+	if [[ $ret -ne 0 ]]; then
+		return $ret
+	fi
+	echo $output
+	# return success only in case of non-empty output
+	[ ! -z "$output" ]
+}
-- 
2.46.0