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selftests: net: bridge_vlan_aware: test that other TPIDs are seen as untagged

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The bridge VLAN implementation w.r.t. VLAN protocol is described in
merge commit 1a0b20b257 ("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@nxp.com>
Reviewed-by: Ido Schimmel <idosch@nvidia.com>
Tested-by: Ido Schimmel <idosch@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Vladimir Oltean 2024-08-15 03:07:01 +03:00 committed by David S. Miller
parent 2379795042
commit e29b82ef27
1 changed files with 53 additions and 1 deletions
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54
tools/testing/selftests/net/forwarding/bridge_vlan_aware.sh
View File

@ -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