[PATCH net-next V4 6/6] net/mlx5: Apply devlink eswitch mode boot default on probe

[Mark Bloch <mbloch@nvidia.com>]

Apply devlink_eswitch_mode= boot defaults for mlx5 after the initial
probe finishes device initialization while holding the devlink instance
lock.

At this point the devlink instance is registered and mlx5 can perform an
eswitch mode change. Calling devl_apply_default_esw_mode() also clears
any pending default apply work queued by devl_register(), so the queued
work will not apply the same default again.

Keep this call in mlx5_init_one() rather than the lower-level
devl-locked init helper. That helper is also used by devlink reload, and
devlink core already applies the boot default after a successful
DRIVER_REINIT reload.

Signed-off-by: Mark Bloch <mbloch@nvidia.com>
---
 drivers/net/ethernet/mellanox/mlx5/core/main.c | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/main.c b/drivers/net/ethernet/mellanox/mlx5/core/main.c
index 643b4aac2033..0712efea74cc 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/main.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/main.c
@@ -1392,6 +1392,17 @@ static void mlx5_unload(struct mlx5_core_dev *dev)
 	mlx5_free_bfreg(dev, &dev->priv.bfreg);
 }
 
+static void mlx5_devl_apply_default_esw_mode(struct mlx5_core_dev *dev)
+{
+	struct devlink *devlink = priv_to_devlink(dev);
+
+	if (!MLX5_ESWITCH_MANAGER(dev))
+		return;
+
+	devl_assert_locked(devlink);
+	devl_apply_default_esw_mode(devlink);
+}
+
 int mlx5_init_one_devl_locked(struct mlx5_core_dev *dev)
 {
 	bool light_probe = mlx5_dev_is_lightweight(dev);
@@ -1471,6 +1482,8 @@ int mlx5_init_one(struct mlx5_core_dev *dev)
 	err = mlx5_init_one_devl_locked(dev);
 	if (err)
 		devl_unregister(devlink);
+	else
+		mlx5_devl_apply_default_esw_mode(dev);
 unlock:
 	devl_unlock(devlink);
 	return err;
-- 
2.43.0