+ /* force tx_rs_thresh to adapt an aggresive tx_free_thresh */
+ tx_rs_thresh = (DEFAULT_TX_RS_THRESH + tx_free_thresh > nb_desc) ?
+ nb_desc - tx_free_thresh : DEFAULT_TX_RS_THRESH;
+ if (tx_conf->tx_rs_thresh > 0)
+ tx_rs_thresh = tx_conf->tx_rs_thresh;
+ if (tx_rs_thresh + tx_free_thresh > nb_desc) {
+ PMD_INIT_LOG(ERR, "tx_rs_thresh + tx_free_thresh must not "
+ "exceed nb_desc. (tx_rs_thresh=%u "
+ "tx_free_thresh=%u nb_desc=%u port = %d queue=%d)",
+ (unsigned int)tx_rs_thresh,
+ (unsigned int)tx_free_thresh,
+ (unsigned int)nb_desc,
+ (int)dev->data->port_id,
+ (int)queue_idx);
+ return -(EINVAL);
+ }