Function mlx5_dev_rss_reta_update

dpdk/drivers/net/mlx5/mlx5_rss.c:195–223

* DPDK callback to update the RETA indirection table. * * @param dev * Pointer to Ethernet device structure. * @param reta_conf * Pointer to RETA configuration structure array. * @param reta_size * Size of the RETA table. * * @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
mlx5_dev_rss_reta_update(struct rte_eth_dev *dev,
			 struct rte_eth_rss_reta_entry64 *reta_conf,
			 uint16_t reta_size)
{
	int ret;
	struct mlx5_priv *priv = dev->data->dev_private;
	unsigned int idx;
	unsigned int i;
	unsigned int pos;

	if (!reta_size) {
		rte_errno = EINVAL;
		return -rte_errno;
	}
	ret = mlx5_rss_reta_index_resize(dev, reta_size);
	if (ret)
		return ret;
	for (idx = 0, i = 0; (i != reta_size); ++i) {
		idx = i / RTE_ETH_RETA_GROUP_SIZE;
		pos = i % RTE_ETH_RETA_GROUP_SIZE;
		if (((reta_conf[idx].mask >> pos) & 0x1) == 0)
			continue;
		MLX5_ASSERT(reta_conf[idx].reta[pos] < priv->rxqs_n);
		(*priv->reta_idx)[i] = reta_conf[idx].reta[pos];
	}
	priv->skip_default_rss_reta = 1;
	return mlx5_traffic_restart(dev);
}