[RFC net-next 6/7] net: dsa: Sync static FDB entries on foreign interfaces to hardware
flat view
From: Tobias Waldekranz <tobias@waldekranz.com>
Date: 2021-01-16 01:27:24
Subsystem:
networking [dsa], networking [general], the rest · Maintainers:
Andrew Lunn, Vladimir Oltean, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
Reuse the "assisted_learning_on_cpu_port" functionality to always add entries for user-configured entries on foreign interfaces, even if assisted_learning_on_cpu_port is not enabled. E.g. in this situation: br0 / \ swp0 dummy0 $ bridge fdb add 02:00:de:ad:00:01 dev dummy0 vlan 1 master Results in DSA adding an entry in the hardware FDB, pointing this address towards the CPU port. The same is true for entries added to the bridge itself, e.g: $ bridge fdb add 02:00:de:ad:00:01 dev br0 vlan 1 self Signed-off-by: Tobias Waldekranz <tobias@waldekranz.com> --- net/dsa/slave.c | 12 ++++++++---- 1 file changed, 8 insertions(+), 4 deletions(-)
diff --git a/net/dsa/slave.c b/net/dsa/slave.c
index 1ac46ad4a846..f89b5eb4d2d6 100644
--- a/net/dsa/slave.c
+++ b/net/dsa/slave.c@@ -2181,9 +2181,12 @@ static int dsa_slave_switchdev_event(struct notifier_block *unused, else if (!fdb_info->added_by_user) return NOTIFY_OK; } else { - /* Snoop addresses learnt on foreign interfaces - * bridged with us, for switches that don't - * automatically learn SA from CPU-injected traffic + /* Snoop addresses added to foreign interfaces + * bridged with us, or the bridge + * itself. Dynamically learned addresses can + * also be added for switches that don't + * automatically learn SA from CPU-injected + * traffic. */ struct net_device *br_dev; struct dsa_slave_priv *p;
@@ -2205,7 +2208,8 @@ static int dsa_slave_switchdev_event(struct notifier_block *unused, dp = p->dp->cpu_dp; - if (!dp->ds->assisted_learning_on_cpu_port) + if (!fdb_info->added_by_user && + !dp->ds->assisted_learning_on_cpu_port) return NOTIFY_DONE; }
--
2.17.1