linux-kernel - [PATCH net 2/2] selftests: bonding: add test for passive LACP mode

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Message-ID: <20250709090344.88242-3-liuhangbin@gmail.com>
Date: Wed,  9 Jul 2025 09:03:44 +0000
From: Hangbin Liu <liuhangbin@...il.com>
To: netdev@...r.kernel.org
Cc: Jay Vosburgh <jv@...sburgh.net>,
	Andrew Lunn <andrew+netdev@...n.ch>,
	"David S. Miller" <davem@...emloft.net>,
	Eric Dumazet <edumazet@...gle.com>,
	Jakub Kicinski <kuba@...nel.org>,
	Paolo Abeni <pabeni@...hat.com>,
	Nikolay Aleksandrov <razor@...ckwall.org>,
	Simon Horman <horms@...nel.org>,
	Shuah Khan <shuah@...nel.org>,
	linux-kselftest@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	Hangbin Liu <liuhangbin@...il.com>
Subject: [PATCH net 2/2] selftests: bonding: add test for passive LACP mode

Add a selftest to verify bonding behavior when lacp_active is set to off.

Signed-off-by: Hangbin Liu <liuhangbin@...il.com>
---
 .../drivers/net/bonding/bond_passive_lacp.sh  | 21 +++++
 .../drivers/net/bonding/bond_topo_lacp.sh     | 77 +++++++++++++++++++
 2 files changed, 98 insertions(+)
 create mode 100755 tools/testing/selftests/drivers/net/bonding/bond_passive_lacp.sh
 create mode 100644 tools/testing/selftests/drivers/net/bonding/bond_topo_lacp.sh

diff --git a/tools/testing/selftests/drivers/net/bonding/bond_passive_lacp.sh b/tools/testing/selftests/drivers/net/bonding/bond_passive_lacp.sh
new file mode 100755
index 000000000000..4cf8a5999aaa
--- /dev/null
+++ b/tools/testing/selftests/drivers/net/bonding/bond_passive_lacp.sh
@@ -0,0 +1,21 @@
+#!/bin/sh
+# SPDX-License-Identifier: GPL-2.0
+#
+# Testing if bond works with lacp_active = off
+
+lib_dir=$(dirname "$0")
+source ${lib_dir}/bond_topo_lacp.sh
+
+trap cleanup EXIT
+setup_topo_lacp
+
+lacp_bond_reset "${c_ns}" "lacp_active off"
+# make sure the switch state is not expired [A,T,G,S,Ex]
+if slowwait 15 ip netns exec ${s_ns} grep -q 'port state: 143' /proc/net/bonding/bond0; then
+	RET=1
+else
+	RET=0
+fi
+log_test "bond 802.3ad" "lacp_active off"
+
+exit $EXIT_STATUS
diff --git a/tools/testing/selftests/drivers/net/bonding/bond_topo_lacp.sh b/tools/testing/selftests/drivers/net/bonding/bond_topo_lacp.sh
new file mode 100644
index 000000000000..33dca6ebdc4b
--- /dev/null
+++ b/tools/testing/selftests/drivers/net/bonding/bond_topo_lacp.sh
@@ -0,0 +1,77 @@
+#!/bin/bash
+# SPDX-License-Identifier: GPL-2.0
+#
+# Topology for Bond mode 802.3ad testing
+#
+#  +-------------------------+
+#  |          bond0          |  Switch
+#  |            +            |  192.0.2.254/24
+#  |      eth0  |  eth1      |  2001:db8::254/24
+#  |        +---+---+        |
+#  |        |       |        |
+#  +-------------------------+
+#           |       |
+#  +-------------------------+
+#  |        |       |        |
+#  |        +---+---+        |  Client
+#  |      eth0  |  eth1      |  192.0.2.1/24
+#  |            +            |  2001:db8::1/24
+#  |          bond0          |
+#  +-------------------------+
+
+REQUIRE_MZ=no
+NUM_NETIFS=0
+lib_dir=$(dirname "$0")
+source "$lib_dir"/../../../net/forwarding/lib.sh
+
+s_ip4="192.0.2.254"
+c_ip4="192.0.2.1"
+s_ip6="2001:db8::254"
+c_ip6="2001:db8::1"
+
+switch_create()
+{
+	ip netns exec ${s_ns} sysctl -q net.ipv6.conf.default.keep_addr_on_down=1
+	ip -n ${s_ns} link add eth0 type veth peer name eth0 netns ${c_ns}
+	ip -n ${s_ns} link add eth1 type veth peer name eth1 netns ${c_ns}
+	ip -n ${s_ns} link add bond0 type bond mode 802.3ad miimon 100 lacp_active on lacp_rate fast
+	ip -n ${s_ns} link set eth0 master bond0
+	ip -n ${s_ns} link set eth1 master bond0
+	ip -n ${s_ns} addr add ${s_ip4}/24 dev bond0
+	ip -n ${s_ns} addr add ${s_ip6}/24 dev bond0
+	ip -n ${s_ns} link set bond0 up
+}
+
+client_create()
+{
+	ip netns exec ${c_ns} sysctl -q net.ipv6.conf.default.keep_addr_on_down=1
+	ip -n ${c_ns} link add bond0 type bond mode 802.3ad miimon 100 lacp_active on 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} addr add ${c_ip4}/24 dev bond0
+	ip -n ${c_ns} addr add ${c_ip6}/24 dev bond0
+	ip -n ${c_ns} link set bond0 up
+}
+
+setup_topo_lacp()
+{
+	setup_ns s_ns c_ns
+	defer cleanup_all_ns
+
+	switch_create
+	client_create
+}
+
+# Reset bond with and options
+lacp_bond_reset()
+{
+	local netns="$1"
+	local param="$2"
+
+	ip -n ${netns} link set bond0 down
+	ip -n ${netns} link set bond0 type bond $param
+	ip -n ${netns} link set bond0 up
+
+	# Wait for IPv6 address ready as it needs DAD
+	slowwait 10 ip netns exec ${c_ns} ping6 ${s_ip6} -c 1 -W 0.1 &> /dev/null
+}
-- 
2.46.0