[PATCH v5 3/6] net/mlx5: support a device removal check operation

[Matan Azrad <matan@mellanox.com>]

Add support to get removal status of mlx5 device.
It is not supported in secondary process.

Signed-off-by: Matan Azrad <matan@mellanox.com>
---
 drivers/net/mlx5/mlx5.c        |  2 ++
 drivers/net/mlx5/mlx5.h        |  1 +
 drivers/net/mlx5/mlx5_ethdev.c | 20 ++++++++++++++++++++
 3 files changed, 23 insertions(+)

diff --git a/drivers/net/mlx5/mlx5.c b/drivers/net/mlx5/mlx5.c
index 1c95f35..c13a2d3 100644
--- a/drivers/net/mlx5/mlx5.c
+++ b/drivers/net/mlx5/mlx5.c
@@ -284,6 +284,7 @@
 	.tx_descriptor_status = mlx5_tx_descriptor_status,
 	.rx_queue_intr_enable = mlx5_rx_intr_enable,
 	.rx_queue_intr_disable = mlx5_rx_intr_disable,
+	.is_removed = mlx5_is_removed,
 };
 
 static const struct eth_dev_ops mlx5_dev_sec_ops = {
@@ -331,6 +332,7 @@
 	.tx_descriptor_status = mlx5_tx_descriptor_status,
 	.rx_queue_intr_enable = mlx5_rx_intr_enable,
 	.rx_queue_intr_disable = mlx5_rx_intr_disable,
+	.is_removed = mlx5_is_removed,
 };
 
 static struct {
diff --git a/drivers/net/mlx5/mlx5.h b/drivers/net/mlx5/mlx5.h
index e740a4e..aaff180 100644
--- a/drivers/net/mlx5/mlx5.h
+++ b/drivers/net/mlx5/mlx5.h
@@ -237,6 +237,7 @@ int mlx5_ibv_device_to_pci_addr(const struct ibv_device *,
 void priv_dev_interrupt_handler_install(struct priv *, struct rte_eth_dev *);
 int mlx5_set_link_down(struct rte_eth_dev *dev);
 int mlx5_set_link_up(struct rte_eth_dev *dev);
+int mlx5_is_removed(struct rte_eth_dev *dev);
 eth_tx_burst_t priv_select_tx_function(struct priv *, struct rte_eth_dev *);
 eth_rx_burst_t priv_select_rx_function(struct priv *, struct rte_eth_dev *);
 
diff --git a/drivers/net/mlx5/mlx5_ethdev.c b/drivers/net/mlx5/mlx5_ethdev.c
index 6f78adc..1c067ca 100644
--- a/drivers/net/mlx5/mlx5_ethdev.c
+++ b/drivers/net/mlx5/mlx5_ethdev.c
@@ -1453,3 +1453,23 @@ struct ethtool_link_settings {
 	}
 	return rx_pkt_burst;
 }
+
+/**
+ * Check if mlx5 device was removed.
+ *
+ * @param dev
+ *   Pointer to Ethernet device structure.
+ *
+ * @return
+ *   1 when device is removed, otherwise 0.
+ */
+int
+mlx5_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;
+}
-- 
1.8.3.1