devlink: remove devlink features

Devlink features were introduced to disallow devlink reload calls of
userspace before the devlink was fully initialized. The reason for this
workaround was the fact that devlink reload was originally called
without devlink instance lock held.

However, with recent changes that converted devlink reload to be
performed under devlink instance lock, this is redundant so remove
devlink features entirely.

Note that mlx5 used this to enable devlink reload conditionally only
when device didn't act as multi port slave. Move the multi port check
into mlx5_devlink_reload_down() callback alongside with the other
checks preventing the device from reload in certain states.

Signed-off-by: Jiri Pirko <jiri@nvidia.com>
Reviewed-by: Jacob Keller <jacob.e.keller@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

8 files changed, 5 insertions, 11 deletions

diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt_devlink.c b/drivers/net/ethernet/broadcom/bnxt/bnxt_devlink.c
index 26913dc816d3..8b3e7697390f 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt_devlink.c
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt_devlink.c
@@ -1303,7 +1303,6 @@ int bnxt_dl_register(struct bnxt *bp)
 	if (rc)
 		goto err_dl_port_unreg;
 
-	devlink_set_features(dl, DEVLINK_F_RELOAD);
 out:
 	devlink_register(dl);
 	return 0;
diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_devlink.c b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_devlink.c
index 3d3b69605423..9a939c0b217f 100644
--- a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_devlink.c
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_devlink.c
@@ -114,7 +114,6 @@ int hclge_devlink_init(struct hclge_dev *hdev)
 	priv->hdev = hdev;
 	hdev->devlink = devlink;
 
-	devlink_set_features(devlink, DEVLINK_F_RELOAD);
 	devlink_register(devlink);
 	return 0;
 }
diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3vf/hclgevf_devlink.c b/drivers/net/ethernet/hisilicon/hns3/hns3vf/hclgevf_devlink.c
index a6c3c5e8f0ab..1b535142c65a 100644
--- a/drivers/net/ethernet/hisilicon/hns3/hns3vf/hclgevf_devlink.c
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3vf/hclgevf_devlink.c
@@ -116,7 +116,6 @@ int hclgevf_devlink_init(struct hclgevf_dev *hdev)
 	priv->hdev = hdev;
 	hdev->devlink = devlink;
 
-	devlink_set_features(devlink, DEVLINK_F_RELOAD);
 	devlink_register(devlink);
 	return 0;
 }
diff --git a/drivers/net/ethernet/intel/ice/ice_devlink.c b/drivers/net/ethernet/intel/ice/ice_devlink.c
index ce753d23aba9..88497363fc4c 100644
--- a/drivers/net/ethernet/intel/ice/ice_devlink.c
+++ b/drivers/net/ethernet/intel/ice/ice_devlink.c
@@ -1376,7 +1376,6 @@ void ice_devlink_register(struct ice_pf *pf)
 {
 	struct devlink *devlink = priv_to_devlink(pf);
 
-	devlink_set_features(devlink, DEVLINK_F_RELOAD);
 	devlink_register(devlink);
 }
 
diff --git a/drivers/net/ethernet/mellanox/mlx4/main.c b/drivers/net/ethernet/mellanox/mlx4/main.c
index 6152f77dcfd8..277738c50c56 100644
--- a/drivers/net/ethernet/mellanox/mlx4/main.c
+++ b/drivers/net/ethernet/mellanox/mlx4/main.c
@@ -4031,7 +4031,6 @@ static int mlx4_init_one(struct pci_dev *pdev, const struct pci_device_id *id)
 		goto err_params_unregister;
 
 	pci_save_state(pdev);
-	devlink_set_features(devlink, DEVLINK_F_RELOAD);
 	devl_unlock(devlink);
 	devlink_register(devlink);
 	return 0;
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/devlink.c b/drivers/net/ethernet/mellanox/mlx5/core/devlink.c
index 95a69544a685..63fb7912b032 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/devlink.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/devlink.c
@@ -156,6 +156,11 @@ static int mlx5_devlink_reload_down(struct devlink *devlink, bool netns_change,
 		return -EOPNOTSUPP;
 	}
 
+	if (mlx5_core_is_mp_slave(dev)) {
+		NL_SET_ERR_MSG_MOD(extack, "reload is unsupported for multi port slave");
+		return -EOPNOTSUPP;
+	}
+
 	if (pci_num_vf(pdev)) {
 		NL_SET_ERR_MSG_MOD(extack, "reload while VFs are present is unfavorable");
 	}
@@ -744,7 +749,6 @@ void mlx5_devlink_traps_unregister(struct devlink *devlink)
 
 int mlx5_devlink_params_register(struct devlink *devlink)
 {
-	struct mlx5_core_dev *dev = devlink_priv(devlink);
 	int err;
 
 	err = devl_params_register(devlink, mlx5_devlink_params,
@@ -762,9 +766,6 @@ int mlx5_devlink_params_register(struct devlink *devlink)
 	if (err)
 		goto max_uc_list_err;
 
-	if (!mlx5_core_is_mp_slave(dev))
-		devlink_set_features(devlink, DEVLINK_F_RELOAD);
-
 	return 0;
 
 max_uc_list_err:
diff --git a/drivers/net/ethernet/mellanox/mlxsw/core.c b/drivers/net/ethernet/mellanox/mlxsw/core.c
index f8623e8388c8..42422a106433 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/core.c
+++ b/drivers/net/ethernet/mellanox/mlxsw/core.c
@@ -2285,7 +2285,6 @@ __mlxsw_core_bus_device_register(const struct mlxsw_bus_info *mlxsw_bus_info,
 	}
 
 	if (!reload) {
-		devlink_set_features(devlink, DEVLINK_F_RELOAD);
 		devl_unlock(devlink);
 		devlink_register(devlink);
 	}
diff --git a/drivers/net/netdevsim/dev.c b/drivers/net/netdevsim/dev.c
index f88095b0f836..6045bece2654 100644
--- a/drivers/net/netdevsim/dev.c
+++ b/drivers/net/netdevsim/dev.c
@@ -1609,7 +1609,6 @@ int nsim_drv_probe(struct nsim_bus_dev *nsim_bus_dev)
 		goto err_hwstats_exit;
 
 	nsim_dev->esw_mode = DEVLINK_ESWITCH_MODE_LEGACY;
-	devlink_set_features(devlink, DEVLINK_F_RELOAD);
 	devl_unlock(devlink);
 	return 0;