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net: bridge: BROPT_FDB_LOCAL_VLAN_0: Skip local FDBs on VLAN creation

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When BROPT_FDB_LOCAL_VLAN_0 is enabled, the local FDB entries for the
member ports as well as the bridge itself should not be created per-VLAN,
but instead only on VLAN 0.

Thus when a VLAN is added for a port or the bridge itself, a local FDB
entry with the corresponding address should not be added when in the VLAN-0
mode.

Reviewed-by: Ido Schimmel <idosch@nvidia.com>
Signed-off-by: Petr Machata <petrm@nvidia.com>
Acked-by: Nikolay Aleksandrov <razor@blackwall.org>
Link: https://patch.msgid.link/bb13ba01d58ed6d5d700e012c519d38ee6806d22.1757004393.git.petrm@nvidia.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Petr Machata
2025-09-04 19:07:22 +02:00
committed by Jakub Kicinski
parent 40df3b8e90
commit a29aba64e0
1 changed files with 6 additions and 4 deletions
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10
net/bridge/br_vlan.c
View File

@@ -331,10 +331,12 @@ static int __vlan_add(struct net_bridge_vlan *v, u16 flags,
/* Add the dev mac and count the vlan only if it's usable */
if (br_vlan_should_use(v)) {
err = br_fdb_add_local(br, p, dev->dev_addr, v->vid);
if (err) {
br_err(br, "failed insert local address into bridge forwarding table\n");
goto out_filt;
if (!br_opt_get(br, BROPT_FDB_LOCAL_VLAN_0)) {
err = br_fdb_add_local(br, p, dev->dev_addr, v->vid);
if (err) {
br_err(br, "failed insert local address into bridge forwarding table\n");
goto out_filt;
}
}
vg->num_vlans++;
}