netdev - [PATCH v2 net-next 6/6] selftests: forwarding: add dynamic FDB test

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Date:   Sat, 18 Mar 2023 15:10:10 +0100
From:   "Hans J. Schultz" <netdev@...io-technology.com>
To:     davem@...emloft.net, kuba@...nel.org
Cc:     netdev@...r.kernel.org,
        "Hans J. Schultz" <netdev@...io-technology.com>,
        Florian Fainelli <f.fainelli@...il.com>,
        Andrew Lunn <andrew@...n.ch>,
        Vladimir Oltean <olteanv@...il.com>,
        Eric Dumazet <edumazet@...gle.com>,
        Paolo Abeni <pabeni@...hat.com>,
        Kurt Kanzenbach <kurt@...utronix.de>,
        Hauke Mehrtens <hauke@...ke-m.de>,
        Woojung Huh <woojung.huh@...rochip.com>,
        UNGLinuxDriver@...rochip.com (maintainer:MICROCHIP KSZ SERIES ETHERNET
        SWITCH DRIVER), Sean Wang <sean.wang@...iatek.com>,
        Landen Chao <Landen.Chao@...iatek.com>,
        DENG Qingfang <dqfext@...il.com>,
        Matthias Brugger <matthias.bgg@...il.com>,
        AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@...labora.com>,
        Claudiu Manoil <claudiu.manoil@....com>,
        Alexandre Belloni <alexandre.belloni@...tlin.com>,
        Clément Léger <clement.leger@...tlin.com>,
        Jiri Pirko <jiri@...nulli.us>,
        Ivan Vecera <ivecera@...hat.com>,
        Roopa Prabhu <roopa@...dia.com>,
        Nikolay Aleksandrov <razor@...ckwall.org>,
        Shuah Khan <shuah@...nel.org>,
        Christian Marangi <ansuelsmth@...il.com>,
        Ido Schimmel <idosch@...dia.com>,
        linux-kernel@...r.kernel.org (open list),
        linux-arm-kernel@...ts.infradead.org (moderated list:ARM/Mediatek SoC
        support),
        linux-mediatek@...ts.infradead.org (moderated list:ARM/Mediatek SoC
        support),
        linux-renesas-soc@...r.kernel.org (open list:RENESAS RZ/N1 A5PSW SWITCH
        DRIVER),
        bridge@...ts.linux-foundation.org (moderated list:ETHERNET BRIDGE),
        linux-kselftest@...r.kernel.org (open list:KERNEL SELFTEST FRAMEWORK)
Subject: [PATCH v2 net-next 6/6] selftests: forwarding: add dynamic FDB test

Test FDB ageing of user entry created by

bridge fdb replace ADDR dev <DEV> master dynamic

Use LOW_AGEING_TIME variable in forwarding.config to set a low ageing time.
Beware, DSA might not accept the ageing time you want. Check the
age_time_coeff value for your driver.

Signed-off-by: Hans J. Schultz <netdev@...io-technology.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..dbc7017fd45d 100755
--- a/tools/testing/selftests/net/forwarding/bridge_locked_port.sh
+++ b/tools/testing/selftests/net/forwarding/bridge_locked_port.sh
@@ -14,6 +14,7 @@ ALL_TESTS="
 NUM_NETIFS=4
 CHECK_TC="no"
 source lib.sh
+source tc_common.sh
 
 h1_create()
 {
@@ -319,6 +320,41 @@ locked_port_mab_flush()
 	log_test "Locked port MAB FDB flush"
 }
 
+# Test of dynamic FDB entries.
+locked_port_dyn_fdb()
+{
+	local mac=00:01:02:03:04:05
+	local ageing_time
+
+	RET=0
+	ageing_time=$(bridge_ageing_time_get br0)
+	tc qdisc add dev $swp2 clsact
+	ip link set dev br0 type bridge ageing_time $LOW_AGEING_TIME
+	bridge link set dev $swp1 learning on locked on
+
+	bridge fdb replace $mac dev $swp1 master dynamic
+	tc filter add dev $swp2 egress protocol ip pref 1 handle 1 flower \
+		dst_ip 192.0.2.2 ip_proto udp dst_port 12345 action pass
+
+	$MZ $swp1 -c 1 -p 128 -t udp "sp=54321,dp=12345" \
+		-a $mac -b `mac_get $h2` -A 192.0.2.1 -B 192.0.2.2 -q
+	tc_check_packets "dev $swp2 egress" 1 1
+	check_err $? "Packet not seen on egress after adding dynamic FDB"
+
+	sleep $((LOW_AGEING_TIME / 100 + 10))
+
+	$MZ $swp1 -c 1 -p 128 -t udp "sp=54321,dp=12345" \
+		-a $mac -b `mac_get $h2` -A 192.0.2.1 -B 192.0.2.2 -q
+	tc_check_packets "dev $swp2 egress" 1 1
+	check_fail $? "Dynamic FDB entry did not age out"
+
+	ip link set dev br0 type bridge ageing_time $ageing_time
+	bridge link set dev $swp1 learning off locked off
+	tc qdisc del dev $swp2 clsact
+
+	log_test "Locked port dyn FDB"
+}
+
 trap cleanup EXIT
 
 setup_prepare
-- 
2.34.1