netdev - [PATCH net-next 4/4] selftests: forwarding: Add test case for traffic redirection from a locked port

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Date: Fri, 11 Aug 2023 17:13:58 +0200
From: Petr Machata <petrm@...dia.com>
To: "David S. Miller" <davem@...emloft.net>, Eric Dumazet
	<edumazet@...gle.com>, Jakub Kicinski <kuba@...nel.org>, Paolo Abeni
	<pabeni@...hat.com>, <netdev@...r.kernel.org>
CC: Ido Schimmel <idosch@...dia.com>, Petr Machata <petrm@...dia.com>,
	<mlxsw@...dia.com>, "Hans J . Schultz" <netdev@...io-technology.com>
Subject: [PATCH net-next 4/4] selftests: forwarding: Add test case for traffic redirection from a locked port

From: Ido Schimmel <idosch@...dia.com>

Check that traffic can be redirected from a locked bridge port and that
it does not create locked FDB entries.

Cc: Hans J. Schultz <netdev@...io-technology.com>
Signed-off-by: Ido Schimmel <idosch@...dia.com>
Reviewed-by: Petr Machata <petrm@...dia.com>
Signed-off-by: Petr Machata <petrm@...dia.com>
---
 .../net/forwarding/bridge_locked_port.sh      | 36 +++++++++++++++++++
 1 file changed, 36 insertions(+)

diff --git a/tools/testing/selftests/net/forwarding/bridge_locked_port.sh b/tools/testing/selftests/net/forwarding/bridge_locked_port.sh
index dc92d32464f6..9af9f6964808 100755
--- a/tools/testing/selftests/net/forwarding/bridge_locked_port.sh
+++ b/tools/testing/selftests/net/forwarding/bridge_locked_port.sh
@@ -9,6 +9,7 @@ ALL_TESTS="
 	locked_port_mab_roam
 	locked_port_mab_config
 	locked_port_mab_flush
+	locked_port_mab_redirect
 "
 
 NUM_NETIFS=4
@@ -319,6 +320,41 @@ locked_port_mab_flush()
 	log_test "Locked port MAB FDB flush"
 }
 
+# Check that traffic can be redirected from a locked bridge port and that it
+# does not create locked FDB entries.
+locked_port_mab_redirect()
+{
+	RET=0
+	check_port_mab_support || return 0
+
+	bridge link set dev $swp1 learning on locked on mab on
+	tc qdisc add dev $swp1 clsact
+	tc filter add dev $swp1 ingress protocol all pref 1 handle 101 flower \
+		action mirred egress redirect dev $swp2
+
+	ping_do $h1 192.0.2.2
+	check_err $? "Ping did not work with redirection"
+
+	bridge fdb get `mac_get $h1` br br0 vlan 1 2> /dev/null | \
+		grep "dev $swp1" | grep -q "locked"
+	check_fail $? "Locked entry created for redirected traffic"
+
+	tc filter del dev $swp1 ingress protocol all pref 1 handle 101 flower
+
+	ping_do $h1 192.0.2.2
+	check_fail $? "Ping worked without redirection"
+
+	bridge fdb get `mac_get $h1` br br0 vlan 1 2> /dev/null | \
+		grep "dev $swp1" | grep -q "locked"
+	check_err $? "Locked entry not created after deleting filter"
+
+	bridge fdb del `mac_get $h1` vlan 1 dev $swp1 master
+	tc qdisc del dev $swp1 clsact
+	bridge link set dev $swp1 learning off locked off mab off
+
+	log_test "Locked port MAB redirect"
+}
+
 trap cleanup EXIT
 
 setup_prepare
-- 
2.41.0