net/mlx5: support link update on Windows

Add support for mlx5_link_update() to get link speed and link state.
Other parameters are currently hard-coded.

Signed-off-by: Tal Shnaiderman <talshn@nvidia.com>
Acked-by: Matan Azrad <matan@nvidia.com>

diff --git a/drivers/net/mlx5/windows/mlx5_ethdev_os.c b/drivers/net/mlx5/windows/mlx5_ethdev_os.c
index 4925fd8..c99eac9 100644 (file)
--- a/drivers/net/mlx5/windows/mlx5_ethdev_os.c
+++ b/drivers/net/mlx5/windows/mlx5_ethdev_os.c
@@ -170,6 +170,50 @@ mlx5_os_read_dev_counters(struct rte_eth_dev *dev, uint64_t *stats)
        return -ENOTSUP;
 }
 
+/**
+ * DPDK callback to retrieve physical link information.
+ *
+ * @param dev
+ *   Pointer to Ethernet device structure.
+ * @param wait_to_complete
+ *   Wait for request completion.
+ *
+ * @return
+ *   0 if link status was not updated, positive if it was, a negative errno
+ *   value otherwise and rte_errno is set.
+ */
+int
+mlx5_link_update(struct rte_eth_dev *dev, int wait_to_complete)
+{
+       RTE_SET_USED(wait_to_complete);
+       struct mlx5_priv *priv;
+       mlx5_context_st *context_obj;
+       struct rte_eth_link dev_link;
+       int ret;
+
+       ret = 0;
+       if (!dev) {
+               rte_errno = EINVAL;
+               return -rte_errno;
+       }
+       priv = dev->data->dev_private;
+       context_obj = (mlx5_context_st *)priv->sh->ctx;
+       dev_link.link_speed = context_obj->mlx5_dev.link_speed / (1024 * 1024);
+       dev_link.link_status =
+             (context_obj->mlx5_dev.link_state == 1 && !mlx5_is_removed(dev))
+             ? 1 : 0;
+       dev_link.link_duplex = 1;
+       if (dev->data->dev_link.link_speed != dev_link.link_speed ||
+           dev->data->dev_link.link_duplex != dev_link.link_duplex ||
+           dev->data->dev_link.link_autoneg != dev_link.link_autoneg ||
+           dev->data->dev_link.link_status != dev_link.link_status)
+               ret = 1;
+       else
+               ret = 0;
+       dev->data->dev_link = dev_link;
+       return ret;
+}
+
 /**
  * DPDK callback to bring the link DOWN.
  *