netdevsim: add all ports in nsim_dev_create() and del them in destroy()

Currently the probe/remove function does this separately. Put the
addition an deletion of ports into nsim_dev_create() and
nsim_dev_destroy().
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Acked-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/netdevsim/dev.c

@@ -603,8 +603,92 @@ static const struct devlink_ops nsim_dev_devlink_ops = {
 #define NSIM_DEV_MAX_MACS_DEFAULT 32
 #define NSIM_DEV_TEST1_DEFAULT true
 
+static int __nsim_dev_port_add(struct nsim_dev *nsim_dev,
+			       unsigned int port_index)
+{
+	struct nsim_dev_port *nsim_dev_port;
+	struct devlink_port *devlink_port;
+	int err;
+
+	nsim_dev_port = kzalloc(sizeof(*nsim_dev_port), GFP_KERNEL);
+	if (!nsim_dev_port)
+		return -ENOMEM;
+	nsim_dev_port->port_index = port_index;
+
+	devlink_port = &nsim_dev_port->devlink_port;
+	devlink_port_attrs_set(devlink_port, DEVLINK_PORT_FLAVOUR_PHYSICAL,
+			       port_index + 1, 0, 0,
+			       nsim_dev->switch_id.id,
+			       nsim_dev->switch_id.id_len);
+	err = devlink_port_register(priv_to_devlink(nsim_dev), devlink_port,
+				    port_index);
+	if (err)
+		goto err_port_free;
+
+	err = nsim_dev_port_debugfs_init(nsim_dev, nsim_dev_port);
+	if (err)
+		goto err_dl_port_unregister;
+
+	nsim_dev_port->ns = nsim_create(nsim_dev, nsim_dev_port);
+	if (IS_ERR(nsim_dev_port->ns)) {
+		err = PTR_ERR(nsim_dev_port->ns);
+		goto err_port_debugfs_exit;
+	}
+
+	devlink_port_type_eth_set(devlink_port, nsim_dev_port->ns->netdev);
+	list_add(&nsim_dev_port->list, &nsim_dev->port_list);
+
+	return 0;
+
+err_port_debugfs_exit:
+	nsim_dev_port_debugfs_exit(nsim_dev_port);
+err_dl_port_unregister:
+	devlink_port_unregister(devlink_port);
+err_port_free:
+	kfree(nsim_dev_port);
+	return err;
+}
+
+static void __nsim_dev_port_del(struct nsim_dev_port *nsim_dev_port)
+{
+	struct devlink_port *devlink_port = &nsim_dev_port->devlink_port;
+
+	list_del(&nsim_dev_port->list);
+	devlink_port_type_clear(devlink_port);
+	nsim_destroy(nsim_dev_port->ns);
+	nsim_dev_port_debugfs_exit(nsim_dev_port);
+	devlink_port_unregister(devlink_port);
+	kfree(nsim_dev_port);
+}
+
+static void nsim_dev_port_del_all(struct nsim_dev *nsim_dev)
+{
+	struct nsim_dev_port *nsim_dev_port, *tmp;
+
+	list_for_each_entry_safe(nsim_dev_port, tmp,
+				 &nsim_dev->port_list, list)
+		__nsim_dev_port_del(nsim_dev_port);
+}
+
+static int nsim_dev_port_add_all(struct nsim_dev *nsim_dev,
+				 unsigned int port_count)
+{
+	int i, err;
+
+	for (i = 0; i < port_count; i++) {
+		err = __nsim_dev_port_add(nsim_dev, i);
+		if (err)
+			goto err_port_del_all;
+	}
+	return 0;
+
+err_port_del_all:
+	nsim_dev_port_del_all(nsim_dev);
+	return err;
+}
+
 static struct nsim_dev *
-nsim_dev_create(struct nsim_bus_dev *nsim_bus_dev, unsigned int port_count)
+nsim_dev_create(struct nsim_bus_dev *nsim_bus_dev)
 {
 	struct nsim_dev *nsim_dev;
 	struct devlink *devlink;
@@ -659,9 +743,15 @@ nsim_dev_create(struct nsim_bus_dev *nsim_bus_dev, unsigned int port_count)
 	if (err)
 		goto err_debugfs_exit;
 
+	err = nsim_dev_port_add_all(nsim_dev, nsim_bus_dev->port_count);
+	if (err)
+		goto err_bpf_dev_exit;
+
 	devlink_params_publish(devlink);
 	return nsim_dev;
 
+err_bpf_dev_exit:
+	nsim_bpf_dev_exit(nsim_dev);
 err_debugfs_exit:
 	nsim_dev_debugfs_exit(nsim_dev);
 err_traps_exit:
@@ -686,6 +776,7 @@ static void nsim_dev_destroy(struct nsim_dev *nsim_dev)
 {
 	struct devlink *devlink = priv_to_devlink(nsim_dev);
 
+	nsim_dev_port_del_all(nsim_dev);
 	nsim_bpf_dev_exit(nsim_dev);
 	nsim_dev_debugfs_exit(nsim_dev);
 	nsim_dev_traps_exit(devlink);
@@ -699,102 +790,22 @@ static void nsim_dev_destroy(struct nsim_dev *nsim_dev)
 	devlink_free(devlink);
 }
 
-static int __nsim_dev_port_add(struct nsim_dev *nsim_dev,
-			       unsigned int port_index)
-{
-	struct nsim_dev_port *nsim_dev_port;
-	struct devlink_port *devlink_port;
-	int err;
-
-	nsim_dev_port = kzalloc(sizeof(*nsim_dev_port), GFP_KERNEL);
-	if (!nsim_dev_port)
-		return -ENOMEM;
-	nsim_dev_port->port_index = port_index;
-
-	devlink_port = &nsim_dev_port->devlink_port;
-	devlink_port_attrs_set(devlink_port, DEVLINK_PORT_FLAVOUR_PHYSICAL,
-			       port_index + 1, 0, 0,
-			       nsim_dev->switch_id.id,
-			       nsim_dev->switch_id.id_len);
-	err = devlink_port_register(priv_to_devlink(nsim_dev), devlink_port,
-				    port_index);
-	if (err)
-		goto err_port_free;
-
-	err = nsim_dev_port_debugfs_init(nsim_dev, nsim_dev_port);
-	if (err)
-		goto err_dl_port_unregister;
-
-	nsim_dev_port->ns = nsim_create(nsim_dev, nsim_dev_port);
-	if (IS_ERR(nsim_dev_port->ns)) {
-		err = PTR_ERR(nsim_dev_port->ns);
-		goto err_port_debugfs_exit;
-	}
-
-	devlink_port_type_eth_set(devlink_port, nsim_dev_port->ns->netdev);
-	list_add(&nsim_dev_port->list, &nsim_dev->port_list);
-
-	return 0;
-
-err_port_debugfs_exit:
-	nsim_dev_port_debugfs_exit(nsim_dev_port);
-err_dl_port_unregister:
-	devlink_port_unregister(devlink_port);
-err_port_free:
-	kfree(nsim_dev_port);
-	return err;
-}
-
-static void __nsim_dev_port_del(struct nsim_dev_port *nsim_dev_port)
-{
-	struct devlink_port *devlink_port = &nsim_dev_port->devlink_port;
-
-	list_del(&nsim_dev_port->list);
-	devlink_port_type_clear(devlink_port);
-	nsim_destroy(nsim_dev_port->ns);
-	nsim_dev_port_debugfs_exit(nsim_dev_port);
-	devlink_port_unregister(devlink_port);
-	kfree(nsim_dev_port);
-}
-
-static void nsim_dev_port_del_all(struct nsim_dev *nsim_dev)
-{
-	struct nsim_dev_port *nsim_dev_port, *tmp;
-
-	list_for_each_entry_safe(nsim_dev_port, tmp,
-				 &nsim_dev->port_list, list)
-		__nsim_dev_port_del(nsim_dev_port);
-}
-
 int nsim_dev_probe(struct nsim_bus_dev *nsim_bus_dev)
 {
 	struct nsim_dev *nsim_dev;
-	int i;
-	int err;
 
-	nsim_dev = nsim_dev_create(nsim_bus_dev, nsim_bus_dev->port_count);
+	nsim_dev = nsim_dev_create(nsim_bus_dev);
 	if (IS_ERR(nsim_dev))
 		return PTR_ERR(nsim_dev);
 	dev_set_drvdata(&nsim_bus_dev->dev, nsim_dev);
 
-	for (i = 0; i < nsim_bus_dev->port_count; i++) {
-		err = __nsim_dev_port_add(nsim_dev, i);
-		if (err)
-			goto err_port_del_all;
-	}
 	return 0;
-
-err_port_del_all:
-	nsim_dev_port_del_all(nsim_dev);
-	nsim_dev_destroy(nsim_dev);
-	return err;
 }
 
 void nsim_dev_remove(struct nsim_bus_dev *nsim_bus_dev)
 {
 	struct nsim_dev *nsim_dev = dev_get_drvdata(&nsim_bus_dev->dev);
 
-	nsim_dev_port_del_all(nsim_dev);
 	nsim_dev_destroy(nsim_dev);
 }