[dpdk-dev] [PATCH v2 8/8] net/mlx5: check DevX to support more Verbs ports

[Xueming Li <xuemingl@nvidia.com>]

Verbs API doesn't support device port number larger than 255 by design.

To support more VF or SubFunction port representors, forces DevX API
check when max Verbs device link ports larger than 255.

Signed-off-by: Xueming Li <xuemingl@nvidia.com>
---
 drivers/net/mlx5/linux/mlx5_os.c | 11 +++++------
 1 file changed, 5 insertions(+), 6 deletions(-)

diff --git a/drivers/net/mlx5/linux/mlx5_os.c b/drivers/net/mlx5/linux/mlx5_os.c
index 93ee9318ebc..39a9722d869 100644
--- a/drivers/net/mlx5/linux/mlx5_os.c
+++ b/drivers/net/mlx5/linux/mlx5_os.c
@@ -1299,12 +1299,6 @@ mlx5_dev_spawn(struct rte_device *dpdk_dev,
 		config->dv_flow_en = 0;
 	}
 #endif
-	if (spawn->max_port > UINT8_MAX) {
-		/* Verbs can't support ports larger than 255 by design. */
-		DRV_LOG(ERR, "can't support IB ports > UINT8_MAX");
-		err = EINVAL;
-		goto error;
-	}
 	config->ind_table_max_size =
 		sh->device_attr.max_rwq_indirection_table_size;
 	/*
@@ -1767,6 +1761,11 @@ mlx5_dev_spawn(struct rte_device *dpdk_dev,
 					mlx5_rxq_ibv_obj_dummy_lb_create;
 		priv->obj_ops.lb_dummy_queue_release =
 					mlx5_rxq_ibv_obj_dummy_lb_release;
+	} else if (spawn->max_port > UINT8_MAX) {
+		/* Verbs can't support ports larger than 255 by design. */
+		DRV_LOG(ERR, "must enable DV and ESW when RDMA link ports > 255");
+		err = ENOTSUP;
+		goto error;
 	} else {
 		priv->obj_ops = ibv_obj_ops;
 	}
-- 
2.33.0