[dpdk-dev] [PATCH 1/5] net/mlx5: add warning message for Direct Verbs flow

[Yongseok Koh <yskoh@mellanox.com>]

In case that the library doesn't support DV flow, if enabled by
'dv_flow_en=1', print out a warning message and disable it.

Fixes: 51e72d386c99 ("net/mlx5: add runtime parameter to enable Direct Verbs")
Cc: orika@mellanox.com

Signed-off-by: Yongseok Koh <yskoh@mellanox.com>
Acked-by: Ori Kam <orika@mellanox.com>
---
 drivers/net/mlx5/mlx5.c      |  6 ++++++
 drivers/net/mlx5/mlx5_flow.c | 20 +++++++-------------
 2 files changed, 13 insertions(+), 13 deletions(-)

diff --git a/drivers/net/mlx5/mlx5.c b/drivers/net/mlx5/mlx5.c
index 795a219771..70b8626126 100644
--- a/drivers/net/mlx5/mlx5.c
+++ b/drivers/net/mlx5/mlx5.c
@@ -1016,6 +1016,12 @@ mlx5_dev_spawn(struct rte_device *dpdk_dev,
 		cs_desc.counter_type, cs_desc.num_of_cs,
 		cs_desc.attributes);
 #endif
+#ifndef HAVE_IBV_FLOW_DV_SUPPORT
+	if (config.dv_flow_en) {
+		DRV_LOG(WARNING, "DV flow is not supported");
+		config.dv_flow_en = 0;
+	}
+#endif
 	config.ind_table_max_size =
 		attr.rss_caps.max_rwq_indirection_table_size;
 	/*
diff --git a/drivers/net/mlx5/mlx5_flow.c b/drivers/net/mlx5/mlx5_flow.c
index bd70fce248..04e287f160 100644
--- a/drivers/net/mlx5/mlx5_flow.c
+++ b/drivers/net/mlx5/mlx5_flow.c
@@ -1673,25 +1673,19 @@ const struct mlx5_flow_driver_ops mlx5_flow_null_drv_ops = {
  *   Pointer to the flow attributes.
  *
  * @return
- *   flow driver type if supported, MLX5_FLOW_TYPE_MAX otherwise.
+ *   flow driver type, MLX5_FLOW_TYPE_MAX otherwise.
  */
 static enum mlx5_flow_drv_type
-flow_get_drv_type(struct rte_eth_dev *dev __rte_unused,
-		  const struct rte_flow_attr *attr)
+flow_get_drv_type(struct rte_eth_dev *dev, const struct rte_flow_attr *attr)
 {
-	struct priv *priv __rte_unused = dev->data->dev_private;
+	struct priv *priv = dev->data->dev_private;
 	enum mlx5_flow_drv_type type = MLX5_FLOW_TYPE_MAX;
 
-	if (attr->transfer) {
+	if (attr->transfer)
 		type = MLX5_FLOW_TYPE_TCF;
-	} else {
-#ifdef HAVE_IBV_FLOW_DV_SUPPORT
-		type = priv->config.dv_flow_en ?  MLX5_FLOW_TYPE_DV :
-						  MLX5_FLOW_TYPE_VERBS;
-#else
-		type = MLX5_FLOW_TYPE_VERBS;
-#endif
-	}
+	else
+		type = priv->config.dv_flow_en ? MLX5_FLOW_TYPE_DV :
+						 MLX5_FLOW_TYPE_VERBS;
 	return type;
 }
 
-- 
2.11.0