netdev - [PATCHv4 net-next 3/4] selftests: bonding: reduce garp_test/arp

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Date: Sun,  4 Feb 2024 16:51:27 +0800
From: Hangbin Liu <liuhangbin@...il.com>
To: netdev@...r.kernel.org
Cc: Jay Vosburgh <j.vosburgh@...il.com>,
	"David S . Miller" <davem@...emloft.net>,
	Jakub Kicinski <kuba@...nel.org>,
	Paolo Abeni <pabeni@...hat.com>,
	Eric Dumazet <edumazet@...gle.com>,
	Liang Li <liali@...hat.com>,
	Przemek Kitszel <przemyslaw.kitszel@...el.com>,
	Hangbin Liu <liuhangbin@...il.com>
Subject: [PATCHv4 net-next 3/4] selftests: bonding: reduce garp_test/arp_validate test time

The purpose of grat_arp is testing commit 9949e2efb54e ("bonding: fix
send_peer_notif overflow"). As the send_peer_notif was defined to u8,
to overflow it, we need to

send_peer_notif = num_peer_notif * peer_notif_delay = num_grat_arp * peer_notify_delay / miimon > 255
  (kernel)           (kernel parameter)                   (user parameter)

e.g. 30 (num_grat_arp) * 1000 (peer_notify_delay) / 100 (miimon) > 255.

Which need 30s to complete sending garp messages. To save the testing time,
the only way is reduce the miimon number. Something like
30 (num_grat_arp) * 100 (peer_notify_delay) / 10 (miimon) > 255.

To save more time, the 50 num_grat_arp testing could be removed.

The arp_validate_test also need to check the mii_status, which sleep
too long. Use slowwait to save some time.

For other connection checkings, make sure active slave changed first.

Reviewed-by: Przemek Kitszel <przemyslaw.kitszel@...el.com>
Signed-off-by: Hangbin Liu <liuhangbin@...il.com>
---
 .../drivers/net/bonding/bond_options.sh       | 38 ++++++++++++++-----
 1 file changed, 29 insertions(+), 9 deletions(-)

diff --git a/tools/testing/selftests/drivers/net/bonding/bond_options.sh b/tools/testing/selftests/drivers/net/bonding/bond_options.sh
index d508486cc0bd..6fd0cff3e1e9 100755
--- a/tools/testing/selftests/drivers/net/bonding/bond_options.sh
+++ b/tools/testing/selftests/drivers/net/bonding/bond_options.sh
@@ -45,15 +45,23 @@ skip_ns()
 }
 
 active_slave=""
+active_slave_changed()
+{
+	local old_active_slave=$1
+	local new_active_slave=$(cmd_jq "ip -n ${s_ns} -d -j link show bond0" \
+				".[].linkinfo.info_data.active_slave")
+	test "$old_active_slave" != "$new_active_slave"
+}
+
 check_active_slave()
 {
 	local target_active_slave=$1
+	slowwait 2 active_slave_changed $active_slave
 	active_slave=$(cmd_jq "ip -n ${s_ns} -d -j link show bond0" ".[].linkinfo.info_data.active_slave")
 	test "$active_slave" = "$target_active_slave"
 	check_err $? "Current active slave is $active_slave but not $target_active_slave"
 }
 
-
 # Test bonding prio option
 prio_test()
 {
@@ -84,13 +92,13 @@ prio_test()
 
 	# active slave should be the higher prio slave
 	ip -n ${s_ns} link set $active_slave down
-	bond_check_connection "fail over"
 	check_active_slave eth2
+	bond_check_connection "fail over"
 
 	# when only 1 slave is up
 	ip -n ${s_ns} link set $active_slave down
-	bond_check_connection "only 1 slave up"
 	check_active_slave eth0
+	bond_check_connection "only 1 slave up"
 
 	# when a higher prio slave change to up
 	ip -n ${s_ns} link set eth2 up
@@ -140,8 +148,8 @@ prio_test()
 		check_active_slave "eth1"
 
 		ip -n ${s_ns} link set $active_slave down
-		bond_check_connection "change slave prio"
 		check_active_slave "eth0"
+		bond_check_connection "change slave prio"
 	fi
 }
 
@@ -199,6 +207,15 @@ prio()
 	prio_ns "active-backup"
 }
 
+wait_mii_up()
+{
+	for i in $(seq 0 2); do
+		mii_status=$(cmd_jq "ip -n ${s_ns} -j -d link show eth$i" ".[].linkinfo.info_slave_data.mii_status")
+		[ ${mii_status} != "UP" ] && return 1
+	done
+	return 0
+}
+
 arp_validate_test()
 {
 	local param="$1"
@@ -211,7 +228,7 @@ arp_validate_test()
 	[ $RET -ne 0 ] && log_test "arp_validate" "$retmsg"
 
 	# wait for a while to make sure the mii status stable
-	sleep 5
+	slowwait 5 wait_mii_up
 	for i in $(seq 0 2); do
 		mii_status=$(cmd_jq "ip -n ${s_ns} -j -d link show eth$i" ".[].linkinfo.info_slave_data.mii_status")
 		if [ ${mii_status} != "UP" ]; then
@@ -276,10 +293,13 @@ garp_test()
 	active_slave=$(cmd_jq "ip -n ${s_ns} -d -j link show bond0" ".[].linkinfo.info_data.active_slave")
 	ip -n ${s_ns} link set ${active_slave} down
 
-	exp_num=$(echo "${param}" | cut -f6 -d ' ')
-	sleep $((exp_num + 2))
+	# wait for active link change
+	slowwait 2 active_slave_changed $active_slave
 
+	exp_num=$(echo "${param}" | cut -f6 -d ' ')
 	active_slave=$(cmd_jq "ip -n ${s_ns} -d -j link show bond0" ".[].linkinfo.info_data.active_slave")
+	slowwait_for_counter $((exp_num + 5)) $exp_num \
+		tc_rule_handle_stats_get "dev s${active_slave#eth} ingress" 101 ".packets" "-n ${g_ns}"
 
 	# check result
 	real_num=$(tc_rule_handle_stats_get "dev s${active_slave#eth} ingress" 101 ".packets" "-n ${g_ns}")
@@ -296,8 +316,8 @@ garp_test()
 num_grat_arp()
 {
 	local val
-	for val in 10 20 30 50; do
-		garp_test "mode active-backup miimon 100 num_grat_arp $val peer_notify_delay 1000"
+	for val in 10 20 30; do
+		garp_test "mode active-backup miimon 10 num_grat_arp $val peer_notify_delay 100"
 		log_test "num_grat_arp" "active-backup miimon num_grat_arp $val"
 	done
 }
-- 
2.43.0