net/mlx4: support a device removal check operation

[dpdk.git] / drivers / net / mlx4 / mlx4_ethdev.c

diff --git a/drivers/net/mlx4/mlx4_ethdev.c b/drivers/net/mlx4/mlx4_ethdev.c
index c80eab5..5318b56 100644 (file)
--- a/drivers/net/mlx4/mlx4_ethdev.c
+++ b/drivers/net/mlx4/mlx4_ethdev.c
@@ -1052,3 +1052,23 @@ mlx4_dev_supported_ptypes_get(struct rte_eth_dev *dev)
        }
        return NULL;
 }
+
+/**
+ * Check if mlx4 device was removed.
+ *
+ * @param dev
+ *   Pointer to Ethernet device structure.
+ *
+ * @return
+ *   1 when device is removed, otherwise 0.
+ */
+int
+mlx4_is_removed(struct rte_eth_dev *dev)
+{
+       struct ibv_device_attr device_attr;
+       struct priv *priv = dev->data->dev_private;
+
+       if (ibv_query_device(priv->ctx, &device_attr) == EIO)
+               return 1;
+       return 0;
+}