mlx5i_attach that creates the resources of IB network device.
mlx5i_detach cleans resources for IB device.

Signed-off-by: Erez Shitrit <ere...@mellanox.com>
---
 drivers/net/ethernet/mellanox/mlx5/core/en_main.c | 122 +++++++++++++++-------
 1 file changed, 87 insertions(+), 35 deletions(-)

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_main.c 
b/drivers/net/ethernet/mellanox/mlx5/core/en_main.c
index 87881f9ddf35..5b3c2e67607f 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_main.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_main.c
@@ -3844,6 +3844,54 @@ static void mlx5e_nic_disable(struct mlx5e_priv *priv)
        mlx5_lag_remove(mdev);
 }
 
+static int mlx5n_attach_netdev_common(struct mlx5_core_dev *mdev,
+                                     struct mlx5e_priv *priv)
+{
+       const struct mlx5e_profile *profile;
+       struct net_device *netdev;
+       int err;
+
+       netdev = priv->netdev;
+       profile = priv->profile;
+       clear_bit(MLX5E_STATE_DESTROYING, &priv->state);
+
+       err = profile->init_tx(priv);
+       if (err)
+               goto out;
+
+       err = mlx5e_open_drop_rq(priv);
+       if (err) {
+               mlx5_core_err(mdev, "open drop rq failed, %d\n", err);
+               goto err_cleanup_tx;
+       }
+
+       err = profile->init_rx(priv);
+       if (err)
+               goto err_close_drop_rq;
+
+       mlx5e_create_q_counter(priv);
+
+       if (profile->enable)
+               profile->enable(priv);
+
+       rtnl_lock();
+       if (netif_running(netdev))
+               mlx5e_open(netdev);
+       netif_device_attach(netdev);
+       rtnl_unlock();
+
+       return 0;
+
+err_close_drop_rq:
+       mlx5e_close_drop_rq(priv);
+
+err_cleanup_tx:
+       profile->cleanup_tx(priv);
+
+out:
+       return err;
+}
+
 static void mlx5i_nic_init(struct mlx5_core_dev *mdev,
                           struct net_device *netdev,
                           const struct mlx5e_profile *profile,
@@ -3942,6 +3990,42 @@ struct net_device *mlx5i_create_netdev(struct 
mlx5_core_dev *mdev,
 }
 EXPORT_SYMBOL(mlx5i_create_netdev);
 
+int mlx5i_attach(struct mlx5_core_dev *mdev, void *vpriv)
+{
+       struct mlx5e_priv *priv = vpriv;
+       struct net_device *netdev = priv->netdev;
+       int err;
+
+       if (netif_device_present(netdev))
+               return 0;
+
+       err = mlx5e_create_mdev_resources(mdev);
+       if (err)
+               return err;
+
+       err = mlx5n_attach_netdev_common(mdev, priv);
+       if (err) {
+               mlx5e_destroy_mdev_resources(mdev);
+               return err;
+       }
+
+       return 0;
+}
+EXPORT_SYMBOL(mlx5i_attach);
+
+void mlx5i_detach(struct mlx5_core_dev *mdev, void *vpriv)
+{
+       struct mlx5e_priv *priv = vpriv;
+       struct net_device *netdev = priv->netdev;
+
+       if (!netif_device_present(netdev))
+               return;
+
+       mlx5e_detach_netdev(mdev, netdev);
+       mlx5e_destroy_mdev_resources(mdev);
+}
+EXPORT_SYMBOL(mlx5i_detach);
+
 static const struct mlx5e_profile mlx5e_nic_profile = {
        .init              = mlx5e_nic_init,
        .cleanup           = mlx5e_nic_cleanup,
@@ -3996,31 +4080,17 @@ struct net_device *mlx5e_create_netdev(struct 
mlx5_core_dev *mdev,
 
 int mlx5e_attach_netdev(struct mlx5_core_dev *mdev, struct mlx5e_priv *priv)
 {
-       const struct mlx5e_profile *profile;
        struct net_device *netdev;
        u16 max_mtu;
        int err;
 
        netdev = priv->netdev;
-       profile = priv->profile;
-       clear_bit(MLX5E_STATE_DESTROYING, &priv->state);
-
-       err = profile->init_tx(priv);
-       if (err)
-               goto out;
 
-       err = mlx5e_open_drop_rq(priv);
+       err = mlx5n_attach_netdev_common(mdev, priv);
        if (err) {
-               mlx5_core_err(mdev, "open drop rq failed, %d\n", err);
-               goto err_cleanup_tx;
+               mlx5_core_err(mdev, "failed attach netdev %d\n", err);
+               return err;
        }
-
-       err = profile->init_rx(priv);
-       if (err)
-               goto err_close_drop_rq;
-
-       mlx5e_create_q_counter(priv);
-       //TBD do i need to change that?
        mlx5e_init_l2_addr(priv);
 
        /* MTU range: 68 - hw-specific max */
@@ -4030,25 +4100,7 @@ int mlx5e_attach_netdev(struct mlx5_core_dev *mdev, 
struct mlx5e_priv *priv)
 
        mlx5e_set_dev_port_mtu(netdev);
 
-       if (profile->enable)
-               profile->enable(priv);
-
-       rtnl_lock();
-       if (netif_running(netdev))
-               mlx5e_open(netdev);
-       netif_device_attach(netdev);
-       rtnl_unlock();
-
        return 0;
-
-err_close_drop_rq:
-       mlx5e_close_drop_rq(priv);
-
-err_cleanup_tx:
-       profile->cleanup_tx(priv);
-
-out:
-       return err;
 }
 
 static void mlx5e_register_vport_rep(struct mlx5_core_dev *mdev)
-- 
1.8.3.1

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