net/dpaa2: configure per-class distribution size

TC distribution size is set with dist_queues or

nb_rx_queues % dist_queues in order of TC priority.

Signed-off-by: Jun Yang <jun.yang@nxp.com>
Acked-by: Hemant Agrawal <hemant.agrawal@nxp.com>

diff --git a/drivers/net/dpaa2/base/dpaa2_hw_dpni.c b/drivers/net/dpaa2/base/dpaa2_hw_dpni.c
index d69156b..25b1d2b 100644 (file)
--- a/drivers/net/dpaa2/base/dpaa2_hw_dpni.c
+++ b/drivers/net/dpaa2/base/dpaa2_hw_dpni.c
@@ -88,7 +88,21 @@ dpaa2_setup_flow_dist(struct rte_eth_dev *eth_dev,
        struct dpni_rx_dist_cfg tc_cfg;
        struct dpkg_profile_cfg kg_cfg;
        void *p_params;
-       int ret;
+       int ret, tc_dist_queues;
+
+       /*TC distribution size is set with dist_queues or
+        * nb_rx_queues % dist_queues in order of TC priority index.
+        * Calculating dist size for this tc_index:-
+        */
+       tc_dist_queues = eth_dev->data->nb_rx_queues -
+               tc_index * priv->dist_queues;
+       if (tc_dist_queues <= 0) {
+               DPAA2_PMD_INFO("No distribution on TC%d", tc_index);
+               return 0;
+       }
+
+       if (tc_dist_queues > priv->dist_queues)
+               tc_dist_queues = priv->dist_queues;
 
        p_params = rte_malloc(
                NULL, DIST_PARAM_IOVA_SIZE, RTE_CACHE_LINE_SIZE);
@@ -109,7 +123,7 @@ dpaa2_setup_flow_dist(struct rte_eth_dev *eth_dev,
        }
 
        tc_cfg.key_cfg_iova = (uint64_t)(DPAA2_VADDR_TO_IOVA(p_params));
-       tc_cfg.dist_size = priv->dist_queues;
+       tc_cfg.dist_size = tc_dist_queues;
        tc_cfg.enable = true;
        tc_cfg.tc = tc_index;