goto err_fib_destroy; 	err = nsim_dev_traps_init(devlink);	if (err)		goto err_dummy_region_exit; 	err = nsim_dev_health_init(nsim_dev, devlink);	if (err)		goto err_traps_exit; 	err = nsim_dev_port_add_all(nsim_dev, nsim_bus_dev->port_count);	if (err)		goto err_health_exit; 	nsim_dev->take_snapshot = debugfs_create_file("take_snapshot",						      0200,						      nsim_dev->ddir,						      nsim_dev,						&nsim_dev_take_snapshot_fops);	return 0; err_health_exit:	nsim_dev_health_exit(nsim_dev);err_traps_exit:	nsim_dev_traps_exit(devlink);err_dummy_region_exit:	nsim_dev_dummy_region_exit(nsim_dev);err_fib_destroy:	nsim_fib_destroy(devlink, nsim_dev->fib_data);	return err;} int nsim_dev_probe(struct nsim_bus_dev *nsim_bus_dev){	struct nsim_dev *nsim_dev;	struct devlink *devlink;	int err; 	devlink = devlink_alloc(&nsim_dev_devlink_ops, sizeof(*nsim_dev));	if (!devlink)		return -ENOMEM;	devlink_net_set(devlink, nsim_bus_dev->initial_net);	nsim_dev = devlink_priv(devlink);	nsim_dev->nsim_bus_dev = nsim_bus_dev;	nsim_dev->switch_id.id_len = sizeof(nsim_dev->switch_id.id);	get_random_bytes(nsim_dev->switch_id.id, nsim_dev->switch_id.id_len);	INIT_LIST_HEAD(&nsim_dev->port_list);	mutex_init(&nsim_dev->port_list_lock);	nsim_dev->fw_update_status = true;	nsim_dev->max_macs = NSIM_DEV_MAX_MACS_DEFAULT;	nsim_dev->test1 = NSIM_DEV_TEST1_DEFAULT;	spin_lock_init(&nsim_dev->fa_cookie_lock); 	dev_set_drvdata(&nsim_bus_dev->dev, nsim_dev); 	err = nsim_dev_resources_register(devlink);	if (err)		goto err_devlink_free; 	nsim_dev->fib_data = nsim_fib_create(devlink, NULL);	if (IS_ERR(nsim_dev->fib_data)) {		err = PTR_ERR(nsim_dev->fib_data);		goto err_resources_unregister;	} 	err = devlink_register(devlink, &nsim_bus_dev->dev);	if (err)		goto err_fib_destroy; 	err = devlink_params_register(devlink, nsim_devlink_params,				      ARRAY_SIZE(nsim_devlink_params));	if (err)		goto err_dl_unregister;	nsim_devlink_set_params_init_values(nsim_dev, devlink); 	err = nsim_dev_dummy_region_init(nsim_dev, devlink);	if (err)		goto err_params_unregister; 	err = nsim_dev_traps_init(devlink);	if (err)		goto err_dummy_region_exit; 	err = nsim_dev_debugfs_init(nsim_dev);	if (err)		goto err_traps_exit; 	err = nsim_dev_health_init(nsim_dev, devlink);	if (err)		goto err_debugfs_exit; 	err = nsim_bpf_dev_init(nsim_dev);	if (err)		goto err_health_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);	devlink_reload_enable(devlink);	return 0; err_bpf_dev_exit:	nsim_bpf_dev_exit(nsim_dev);err_health_exit:	nsim_dev_health_exit(nsim_dev);err_debugfs_exit:	nsim_dev_debugfs_exit(nsim_dev);err_traps_exit:	nsim_dev_traps_exit(devlink);err_dummy_region_exit:	nsim_dev_dummy_region_exit(nsim_dev);err_params_unregister:	devlink_params_unregister(devlink, nsim_devlink_params,				  ARRAY_SIZE(nsim_devlink_params));err_dl_unregister:	devlink_unregister(devlink);err_fib_destroy:	nsim_fib_destroy(devlink, nsim_dev->fib_data);err_resources_unregister:	devlink_resources_unregister(devlink, NULL);err_devlink_free:	devlink_free(devlink);	return err;} static void nsim_dev_reload_destroy(struct nsim_dev *nsim_dev){	struct devlink *devlink = priv_to_devlink(nsim_dev); 	if (devlink_is_reload_failed(devlink))		return;	debugfs_remove(nsim_dev->take_snapshot);	nsim_dev_port_del_all(nsim_dev);	nsim_dev_health_exit(nsim_dev);	nsim_dev_traps_exit(devlink);	nsim_dev_dummy_region_exit(nsim_dev);	mutex_destroy(&nsim_dev->port_list_lock);	nsim_fib_destroy(devlink, nsim_dev->fib_data);} void nsim_dev_remove(struct nsim_bus_dev *nsim_bus_dev){	struct nsim_dev *nsim_dev = dev_get_drvdata(&nsim_bus_dev->dev);	struct devlink *devlink = priv_to_devlink(nsim_dev); 	devlink_reload_disable(devlink); 	nsim_dev_reload_destroy(nsim_dev); 	nsim_bpf_dev_exit(nsim_dev);	nsim_dev_debugfs_exit(nsim_dev);	devlink_params_unregister(devlink, nsim_devlink_params,				  ARRAY_SIZE(nsim_devlink_params));	devlink_unregister(devlink);	devlink_resources_unregister(devlink, NULL);	devlink_free(devlink);} static struct nsim_dev_port *__nsim_dev_port_lookup(struct nsim_dev *nsim_dev, unsigned int port_index){	struct nsim_dev_port *nsim_dev_port; 	list_for_each_entry(nsim_dev_port, &nsim_dev->port_list, list)		if (nsim_dev_port->port_index == port_index)			return nsim_dev_port;	return NULL;} int nsim_dev_port_add(struct nsim_bus_dev *nsim_bus_dev,		      unsigned int port_index){	struct nsim_dev *nsim_dev = dev_get_drvdata(&nsim_bus_dev->dev);	int err; 	mutex_lock(&nsim_dev->port_list_lock);	if (__nsim_dev_port_lookup(nsim_dev, port_index))		err = -EEXIST;	else		err = __nsim_dev_port_add(nsim_dev, port_index);	mutex_unlock(&nsim_dev->port_list_lock);	return err;} int nsim_dev_port_del(struct nsim_bus_dev *nsim_bus_dev,		      unsigned int port_index){	struct nsim_dev *nsim_dev = dev_get_drvdata(&nsim_bus_dev->dev);	struct nsim_dev_port *nsim_dev_port;	int err = 0; 	mutex_lock(&nsim_dev->port_list_lock);	nsim_dev_port = __nsim_dev_port_lookup(nsim_dev, port_index);	if (!nsim_dev_port)		err = -ENOENT;	else		__nsim_dev_port_del(nsim_dev_port);	mutex_unlock(&nsim_dev->port_list_lock);	return err;} int nsim_dev_init(void){	nsim_dev_ddir = debugfs_create_dir(DRV_NAME, NULL);	return PTR_ERR_OR_ZERO(nsim_dev_ddir);} void nsim_dev_exit(void){	debugfs_remove_recursive(nsim_dev_ddir);}

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