net/dpaa2: change Tx queue congestion settings

Change the Tx queue congestion notification to
the ratio of current queue size instead of fixed.

Signed-off-by: Hemant Agrawal <hemant.agrawal@nxp.com>

diff --git a/drivers/net/dpaa2/dpaa2_ethdev.c b/drivers/net/dpaa2/dpaa2_ethdev.c
index 412f970..586d116 100644 (file)
--- a/drivers/net/dpaa2/dpaa2_ethdev.c
+++ b/drivers/net/dpaa2/dpaa2_ethdev.c
@@ -922,9 +922,9 @@ dpaa2_dev_tx_queue_setup(struct rte_eth_dev *dev,
                cong_notif_cfg.units = DPNI_CONGESTION_UNIT_FRAMES;
                cong_notif_cfg.threshold_entry = nb_tx_desc;
                /* Notify that the queue is not congested when the data in
-                * the queue is below this thershold.
+                * the queue is below this thershold.(90% of value)
                 */
-               cong_notif_cfg.threshold_exit = nb_tx_desc - 24;
+               cong_notif_cfg.threshold_exit = (nb_tx_desc * 9) / 10;
                cong_notif_cfg.message_ctx = 0;
                cong_notif_cfg.message_iova =
                                (size_t)DPAA2_VADDR_TO_IOVA(dpaa2_q->cscn);