net/mlx5: Rename events notifier header

Change the naming of events notifier head to clarify that it handles
only firmware events. Coming patches in the set, add event notifier for
software events.
Signed-off-by: Aya Levin <ayal@nvidia.com>
Reviewed-by: Tariq Toukan <tariqt@nvidia.com>
Signed-off-by: Tariq Toukan <tariqt@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

drivers/net/ethernet/mellanox/mlx5/core/events.c

@@ -23,7 +23,7 @@ static int temp_warn(struct notifier_block *, unsigned long, void *);
 static int port_module(struct notifier_block *, unsigned long, void *);
 static int pcie_core(struct notifier_block *, unsigned long, void *);
 
-/* handler which forwards the event to events->nh, driver notifiers */
+/* handler which forwards the event to events->fw_nh, driver notifiers */
 static int forward_event(struct notifier_block *, unsigned long, void *);
 
 static struct mlx5_nb events_nbs_ref[] = {
@@ -55,8 +55,8 @@ struct mlx5_events {
 	struct mlx5_core_dev *dev;
 	struct workqueue_struct *wq;
 	struct mlx5_event_nb  notifiers[ARRAY_SIZE(events_nbs_ref)];
-	/* driver notifier chain */
-	struct atomic_notifier_head nh;
+	/* driver notifier chain for fw events */
+	struct atomic_notifier_head fw_nh;
 	/* port module events stats */
 	struct mlx5_pme_stats pme_stats;
 	/*pcie_core*/
@@ -331,7 +331,7 @@ static int forward_event(struct notifier_block *nb, unsigned long event, void *d
 
 	mlx5_core_dbg(events->dev, "Async eqe type %s, subtype (%d) forward to interfaces\n",
 		      eqe_type_str(eqe->type), eqe->sub_type);
-	atomic_notifier_call_chain(&events->nh, event, data);
+	atomic_notifier_call_chain(&events->fw_nh, event, data);
 	return NOTIFY_OK;
 }
 
@@ -342,7 +342,7 @@ int mlx5_events_init(struct mlx5_core_dev *dev)
 	if (!events)
 		return -ENOMEM;
 
-	ATOMIC_INIT_NOTIFIER_HEAD(&events->nh);
+	ATOMIC_INIT_NOTIFIER_HEAD(&events->fw_nh);
 	events->dev = dev;
 	dev->priv.events = events;
 	events->wq = create_singlethread_workqueue("mlx5_events");
@@ -383,11 +383,14 @@ void mlx5_events_stop(struct mlx5_core_dev *dev)
 	flush_workqueue(events->wq);
 }
 
+/* This API is used only for processing and forwarding firmware
+ * events to mlx5 consumer.
+ */
 int mlx5_notifier_register(struct mlx5_core_dev *dev, struct notifier_block *nb)
 {
 	struct mlx5_events *events = dev->priv.events;
 
-	return atomic_notifier_chain_register(&events->nh, nb);
+	return atomic_notifier_chain_register(&events->fw_nh, nb);
 }
 EXPORT_SYMBOL(mlx5_notifier_register);
 
@@ -395,11 +398,11 @@ int mlx5_notifier_unregister(struct mlx5_core_dev *dev, struct notifier_block *n
 {
 	struct mlx5_events *events = dev->priv.events;
 
-	return atomic_notifier_chain_unregister(&events->nh, nb);
+	return atomic_notifier_chain_unregister(&events->fw_nh, nb);
 }
 EXPORT_SYMBOL(mlx5_notifier_unregister);
 
 int mlx5_notifier_call_chain(struct mlx5_events *events, unsigned int event, void *data)
 {
-	return atomic_notifier_call_chain(&events->nh, event, data);
+	return atomic_notifier_call_chain(&events->fw_nh, event, data);
 }