| From ec5be4f79026282925ae383caa431a8d41e3456a Mon Sep 17 00:00:00 2001 |
| From: Tobias Waldekranz <tobias@waldekranz.com> |
| Date: Sat, 16 Jan 2021 02:25:10 +0100 |
| Subject: [PATCH] net: bridge: switchdev: Include local flag in FDB |
| notifications |
| |
| Some switchdev drivers, notably DSA, ignore all dynamically learned |
| address notifications (!added_by_user) as these are autonomously added |
| by the switch. Previously, such a notification was indistinguishable |
| from a local address notification. Include a local bit in the |
| notification so that the two classes can be discriminated. |
| |
| This allows DSA-like devices to add local addresses to the hardware |
| FDB (with the CPU as the destination), thereby avoiding flows towards |
| the CPU being flooded by the switch as unknown unicast. |
| |
| Signed-off-by: Tobias Waldekranz <tobias@waldekranz.com> |
| --- |
| include/net/switchdev.h | 1 + |
| net/bridge/br_switchdev.c | 1 + |
| 2 files changed, 2 insertions(+) |
| |
| --- a/include/net/switchdev.h |
| +++ b/include/net/switchdev.h |
| @@ -124,6 +124,7 @@ struct switchdev_notifier_fdb_info { |
| const unsigned char *addr; |
| u16 vid; |
| u8 added_by_user:1, |
| + local:1, |
| offloaded:1; |
| }; |
| |
| --- a/net/bridge/br_switchdev.c |
| +++ b/net/bridge/br_switchdev.c |
| @@ -109,6 +109,7 @@ br_switchdev_fdb_notify(const struct net |
| .addr = fdb->key.addr.addr, |
| .vid = fdb->key.vlan_id, |
| .added_by_user = fdb->added_by_user, |
| + .local = fdb->is_local, |
| .offloaded = fdb->offloaded, |
| }; |
| |