From: Petr Machata Date: Thu, 4 Sep 2025 17:07:22 +0000 (+0200) Subject: net: bridge: BROPT_FDB_LOCAL_VLAN_0: Skip local FDBs on VLAN creation X-Git-Url: https://www.infradead.org/git/?a=commitdiff_plain;h=a29aba64e022072eb1388e9bf041fbec6902553e;p=users%2Fhch%2Fmisc.git net: bridge: BROPT_FDB_LOCAL_VLAN_0: Skip local FDBs on VLAN creation 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 Signed-off-by: Petr Machata Acked-by: Nikolay Aleksandrov Link: https://patch.msgid.link/bb13ba01d58ed6d5d700e012c519d38ee6806d22.1757004393.git.petrm@nvidia.com Signed-off-by: Jakub Kicinski --- diff --git a/net/bridge/br_vlan.c b/net/bridge/br_vlan.c index 939a3aa78d5c..ae911220cb3c 100644 --- a/net/bridge/br_vlan.c +++ b/net/bridge/br_vlan.c @@ -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++; }