Function mlx4_flow_sync

dpdk/drivers/net/mlx4/mlx4_flow.c:1533–1565

* Synchronize flow rules. * * This function synchronizes flow rules with the state of the device by * taking into account isolated mode and whether target queues are * configured. * * @param priv * Pointer to private structure. * @param[out] error * Perform verbose error reporting if not NULL. * * @return * 0 on success, a negative errno value otherwise and rte_errno is set. */

 *   0 on success, a negative errno value otherwise and rte_errno is set.
 */
int
mlx4_flow_sync(struct mlx4_priv *priv, struct rte_flow_error *error)
{
	struct rte_flow *flow;
	int ret;

	/* Internal flow rules are guaranteed to come first in the list. */
	if (priv->isolated) {
		/*
		 * Get rid of them in isolated mode, stop at the first
		 * non-internal rule found.
		 */
		for (flow = LIST_FIRST(&priv->flows);
		     flow && flow->internal;
		     flow = LIST_FIRST(&priv->flows))
			claim_zero(mlx4_flow_destroy(ETH_DEV(priv), flow,
						     error));
	} else {
		/* Refresh internal rules. */
		ret = mlx4_flow_internal(priv, error);
		if (ret)
			return ret;
	}
	/* Toggle the remaining flow rules . */
	LIST_FOREACH(flow, &priv->flows, next) {
		ret = mlx4_flow_toggle(priv, flow, priv->started, error);
		if (ret)
			return ret;
	}
	if (!priv->started)
		MLX4_ASSERT(!priv->drop);
	return 0;
}

/**
 * Clean up all flow rules.