static int gve_setup_device_resources()

in build/gve_main.c [716:790]

• 70 lines of code
• 10 McCabe index (conditional complexity)

static int gve_setup_device_resources(struct gve_priv *priv)
{
	int err;

	err = gve_alloc_flow_rule_caches(priv);
	if (err)
		return err;
	err = gve_alloc_counter_array(priv);
	if (err)
		goto abort_with_flow_rule_caches;
	err = gve_alloc_notify_blocks(priv);
	if (err)
		goto abort_with_counter;
	err = gve_alloc_stats_report(priv);
	if (err)
		goto abort_with_ntfy_blocks;
	err = gve_adminq_configure_device_resources(priv,
						    priv->counter_array_bus,
						    priv->num_event_counters,
						    priv->irq_db_indices_bus,
						    priv->num_ntfy_blks);
	if (unlikely(err)) {
		dev_err(&priv->pdev->dev,
			"could not setup device_resources: err=%d\n", err);
		err = -ENXIO;
		goto abort_with_stats_report;
	}

	if (!gve_is_gqi(priv)) {
#if LINUX_VERSION_CODE >= KERNEL_VERSION(4,18,0)
		priv->ptype_lut_dqo = kvzalloc(sizeof(*priv->ptype_lut_dqo),
					       GFP_KERNEL);
#else /* LINUX_VERSION_CODE >= KERNEL_VERSION(4,18,0) */
		priv->ptype_lut_dqo = kcalloc(1, sizeof(*priv->ptype_lut_dqo),
					      GFP_KERNEL);
#endif /* LINUX_VERSION_CODE >= KERNEL_VERSION(4,18,0) */
		if (!priv->ptype_lut_dqo) {
			err = -ENOMEM;
			goto abort_with_stats_report;
		}
		err = gve_adminq_get_ptype_map_dqo(priv, priv->ptype_lut_dqo);
		if (err) {
			dev_err(&priv->pdev->dev,
				"Failed to get ptype map: err=%d\n", err);
			goto abort_with_ptype_lut;
		}
	}

	err = gve_adminq_report_stats(priv, priv->stats_report_len,
				      priv->stats_report_bus,
				      GVE_STATS_REPORT_TIMER_PERIOD);
	if (err)
		dev_err(&priv->pdev->dev,
			"Failed to report stats: err=%d\n", err);
	gve_set_device_resources_ok(priv);
	return 0;

abort_with_ptype_lut:
#if LINUX_VERSION_CODE >= KERNEL_VERSION(4,18,0)
	kvfree(priv->ptype_lut_dqo);
#else /* LINUX_VERSION_CODE >= KERNEL_VERSION(4,18,0) */
	kfree(priv->ptype_lut_dqo);
#endif /* LINUX_VERSION_CODE >= KERNEL_VERSION(4,18,0) */
	priv->ptype_lut_dqo = NULL;
abort_with_stats_report:
	gve_free_stats_report(priv);
abort_with_ntfy_blocks:
	gve_free_notify_blocks(priv);
abort_with_counter:
	gve_free_counter_array(priv);
abort_with_flow_rule_caches:
	gve_free_flow_rule_caches(priv);

	return err;
}