The bridge VLAN implementation w.r.t. VLAN protocol is described in
merge commit 1a0b20b25732 ("Merge branch 'bridge-next'"). We are only
sensitive to those VLAN tags whose TPID is equal to the bridge's
vlan_protocol. Thus, an 802.1ad VLAN should be treated as 802.1Q-untagged.
Add 3 tests which validate that:
- 802.1ad-tagged traffic is learned into the PVID of an 802.1Q-aware
bridge
- Double-tagged traffic is forwarded when just the PVID of the port is
present in the VLAN group of the ports
- Double-tagged traffic is not forwarded when the PVID of the port is
absent from the VLAN group of the ports
The test passes with both veth and ocelot.
Signed-off-by: Vladimir Oltean <vladimir.oltean@xxxxxxx>
---
.../net/forwarding/bridge_vlan_aware.sh | 54 ++++++++++++++++++-
1 file changed, 53 insertions(+), 1 deletion(-)
diff --git a/tools/testing/selftests/net/forwarding/bridge_vlan_aware.sh b/tools/testing/selftests/net/forwarding/bridge_vlan_aware.sh
index 64bd00fe9a4f..90f8a244ea90 100755
--- a/tools/testing/selftests/net/forwarding/bridge_vlan_aware.sh
+++ b/tools/testing/selftests/net/forwarding/bridge_vlan_aware.sh
@@ -1,7 +1,7 @@
#!/bin/bash
# SPDX-License-Identifier: GPL-2.0
-ALL_TESTS="ping_ipv4 ping_ipv6 learning flooding vlan_deletion extern_learn"
+ALL_TESTS="ping_ipv4 ping_ipv6 learning flooding vlan_deletion extern_learn other_tpid"
NUM_NETIFS=4
CHECK_TC="yes"
source lib.sh
@@ -142,6 +142,58 @@ extern_learn()
bridge fdb del de:ad:be:ef:13:37 dev $swp1 master vlan 1 &> /dev/null
}
+other_tpid()
+{
+ local mac=de:ad:be:ef:13:37
+
+ # Test that packets with TPID 802.1ad VID 3 + TPID 802.1Q VID 5 are
+ # classified as untagged by a bridge with vlan_protocol 802.1Q, and
+ # are processed in the PVID of the ingress port (here 1). Not VID 3,
+ # and not VID 5.
+ RET=0
+
+ tc qdisc add dev $h2 clsact
+ tc filter add dev $h2 ingress protocol all pref 1 handle 101 \
+ flower dst_mac $mac action drop
+ ip link set $h2 promisc on
+ ethtool -K $h2 rx-vlan-filter off rx-vlan-stag-filter off
+
+ $MZ -q $h1 -c 1 -b $mac -a own "88:a8 00:03 81:00 00:05 08:00 aa-aa-aa-aa-aa-aa-aa-aa-aa"
+ sleep 1
+
+ # Match on 'self' addresses as well, for those drivers which
+ # do not push their learned addresses to the bridge software
+ # database
+ bridge -j fdb show $swp1 | \
+ jq -e ".[] | select(.mac == \"$(mac_get $h1)\") | select(.vlan == 1)" &> /dev/null
+ check_err $? "FDB entry was not learned when it should"
+
+ log_test "FDB entry in PVID for VLAN-tagged with other TPID"
+
+ RET=0
+ tc -j -s filter show dev $h2 ingress \
+ | jq -e ".[] | select(.options.handle == 101) \
+ | select(.options.actions[0].stats.packets == 1)" &> /dev/null
+ check_err $? "Packet was not forwarded when it should"
+ log_test "Reception of VLAN with other TPID as untagged"
+
+ bridge vlan del dev $swp1 vid 1
+
+ $MZ -q $h1 -c 1 -b $mac -a own "88:a8 00:03 81:00 00:05 08:00 aa-aa-aa-aa-aa-aa-aa-aa-aa"
+ sleep 1
+
+ RET=0
+ tc -j -s filter show dev $h2 ingress \
+ | jq -e ".[] | select(.options.handle == 101) \
+ | select(.options.actions[0].stats.packets == 1)" &> /dev/null
+ check_err $? "Packet was forwarded when should not"
+ log_test "Reception of VLAN with other TPID as untagged (no PVID)"
+
+ bridge vlan add dev $swp1 vid 1 pvid untagged
+ ip link set $h2 promisc off
+ tc qdisc del dev $h2 clsact
+}
+
trap cleanup EXIT
setup_prepare
--
2.34.1
