net: dsa: Add support for learning FDB through notification
Add support for learning FDB through notification. The driver defers
the hardware update via ordered work queue. In case of a successful
FDB add a notification is sent back to bridge.
In case of hw FDB del failure the static FDB will be deleted from
the bridge, thus, the interface is moved to down state in order to
indicate inconsistent situation.
Signed-off-by: Arkadi Sharshevsky <arkadis@mellanox.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/dsa/dsa.c b/net/dsa/dsa.c
index 4118848..99e38af 100644
--- a/net/dsa/dsa.c
+++ b/net/dsa/dsa.c
@@ -282,10 +282,22 @@ static struct packet_type dsa_pack_type __read_mostly = {
.func = dsa_switch_rcv,
};
+static struct workqueue_struct *dsa_owq;
+
+bool dsa_schedule_work(struct work_struct *work)
+{
+ return queue_work(dsa_owq, work);
+}
+
static int __init dsa_init_module(void)
{
int rc;
+ dsa_owq = alloc_ordered_workqueue("dsa_ordered",
+ WQ_MEM_RECLAIM);
+ if (!dsa_owq)
+ return -ENOMEM;
+
rc = dsa_slave_register_notifier();
if (rc)
return rc;
@@ -305,6 +317,7 @@ static void __exit dsa_cleanup_module(void)
dsa_slave_unregister_notifier();
dev_remove_pack(&dsa_pack_type);
dsa_legacy_unregister();
+ destroy_workqueue(dsa_owq);
}
module_exit(dsa_cleanup_module);