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selftests: bridge_fdb_local_vlan_0: Test FDB vs. NET_ADDR_SET behavior

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The previous patch fixed an issue whereby no FDB entry would be created for
the bridge itself on VLAN 0 under some circumstances. This could break
forwarding. Add a test for the fix.

Signed-off-by: Petr Machata <petrm@nvidia.com>
Acked-by: Nikolay Aleksandrov <razor@blackwall.org>
Link: https://patch.msgid.link/137cc25396f5a4f407267af895a14bc45552ba5f.1758550408.git.petrm@nvidia.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Petr Machata 2025-09-22 16:14:49 +02:00 committed by Jakub Kicinski
parent cd9a9562b2
commit f67e9ae72d
1 changed files with 24 additions and 4 deletions
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28
tools/testing/selftests/net/forwarding/bridge_fdb_local_vlan_0.sh
View File

@ -27,6 +27,7 @@ ALL_TESTS="
test_d_sharing
test_q_no_sharing
test_q_sharing
test_addr_set
"
NUM_NETIFS=6
@ -110,13 +111,10 @@ setup_prepare()
switch_create
}
adf_bridge_create()
adf_bridge_configure()
{
local dev
local mac
ip_link_add br up type bridge vlan_default_pvid 0 "$@"
mac=$(mac_get br)
ip_addr_add br 192.0.2.3/28
ip_addr_add br 2001:db8:1::3/64
@ -130,7 +128,15 @@ adf_bridge_create()
bridge_vlan_add dev "$dev" vid 2
bridge_vlan_add dev "$dev" vid 3
done
}
adf_bridge_create()
{
local mac
ip_link_add br up type bridge vlan_default_pvid 0 "$@"
mac=$(mac_get br)
adf_bridge_configure
ip_link_set_addr br "$mac"
}
@ -367,6 +373,20 @@ test_q_sharing()
do_test_sharing 1
}
adf_addr_set_bridge_create()
{
ip_link_add br up type bridge vlan_filtering 0
ip_link_set_addr br "$(mac_get br)"
adf_bridge_configure
}
test_addr_set()
{
adf_addr_set_bridge_create
setup_wait
do_end_to_end_test "$(mac_get br)" "NET_ADDR_SET: end to end, br MAC"
}
trap cleanup EXIT