net/mlx5: add Direct Verbs translate items

[dpdk.git] / drivers / net / mlx5 / mlx5_flow.c

diff --git a/drivers/net/mlx5/mlx5_flow.c b/drivers/net/mlx5/mlx5_flow.c
index 6c30466..69523ab 100644 (file)
--- a/drivers/net/mlx5/mlx5_flow.c
+++ b/drivers/net/mlx5/mlx5_flow.c
@@ -444,6 +444,42 @@ mlx5_flow_item_acceptable(const struct rte_flow_item *item,
        return 0;
 }
 
+/**
+ * Adjust the hash fields according to the @p flow information.
+ *
+ * @param[in] dev_flow.
+ *   Pointer to the mlx5_flow.
+ * @param[in] tunnel
+ *   1 when the hash field is for a tunnel item.
+ * @param[in] layer_types
+ *   ETH_RSS_* types.
+ * @param[in] hash_fields
+ *   Item hash fields.
+ *
+ * @return
+ *   The hash fileds that should be used.
+ */
+uint64_t
+mlx5_flow_hashfields_adjust(struct mlx5_flow *dev_flow,
+                           int tunnel __rte_unused, uint32_t layer_types,
+                           uint64_t hash_fields)
+{
+       struct rte_flow *flow = dev_flow->flow;
+#ifdef HAVE_IBV_DEVICE_TUNNEL_SUPPORT
+       int rss_request_inner = flow->rss.level >= 2;
+
+       /* Check RSS hash level for tunnel. */
+       if (tunnel && rss_request_inner)
+               hash_fields |= IBV_RX_HASH_INNER;
+       else if (tunnel || rss_request_inner)
+               return 0;
+#endif
+       /* Check if requested layer matches RSS hash fields. */
+       if (!(flow->rss.types & layer_types))
+               return 0;
+       return hash_fields;
+}
+
 /**
  * Lookup and set the ptype in the data Rx part.  A single Ptype can be used,
  * if several tunnel rules are used on this queue, the tunnel ptype will be