Merge branch 'devlink-move-reload-fail-indication-to-devlink-core-and-expose-to-user'

Jiri Pirko says:

====================
net: devlink: move reload fail indication to devlink core and expose to user

First two patches are dependencies of the last one. That moves devlink
reload failure indication to the devlink code, so the drivers do not
have to track it themselves. Currently it is only mlxsw, but I will send
a follow-up patchset that introduces this in netdevsim too.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 36 insertions, 8 deletions

diff --git a/drivers/net/ethernet/mellanox/mlx4/main.c b/drivers/net/ethernet/mellanox/mlx4/main.c
index 07c204bd3fc4..ef3f3d06ff1e 100644
--- a/drivers/net/ethernet/mellanox/mlx4/main.c
+++ b/drivers/net/ethernet/mellanox/mlx4/main.c
@@ -3931,26 +3931,43 @@ static void mlx4_devlink_param_load_driverinit_values(struct devlink *devlink)
 	}
 }
 
-static int mlx4_devlink_reload(struct devlink *devlink,
-			       struct netlink_ext_ack *extack)
+static void mlx4_restart_one_down(struct pci_dev *pdev);
+static int mlx4_restart_one_up(struct pci_dev *pdev, bool reload,
+			       struct devlink *devlink);
+
+static int mlx4_devlink_reload_down(struct devlink *devlink,
+				    struct netlink_ext_ack *extack)
 {
 	struct mlx4_priv *priv = devlink_priv(devlink);
 	struct mlx4_dev *dev = &priv->dev;
 	struct mlx4_dev_persistent *persist = dev->persist;
-	int err;
 
 	if (persist->num_vfs)
 		mlx4_warn(persist->dev, "Reload performed on PF, will cause reset on operating Virtual Functions\n");
-	err = mlx4_restart_one(persist->pdev, true, devlink);
+	mlx4_restart_one_down(persist->pdev);
+	return 0;
+}
+
+static int mlx4_devlink_reload_up(struct devlink *devlink,
+				  struct netlink_ext_ack *extack)
+{
+	struct mlx4_priv *priv = devlink_priv(devlink);
+	struct mlx4_dev *dev = &priv->dev;
+	struct mlx4_dev_persistent *persist = dev->persist;
+	int err;
+
+	err = mlx4_restart_one_up(persist->pdev, true, devlink);
 	if (err)
-		mlx4_err(persist->dev, "mlx4_restart_one failed, ret=%d\n", err);
+		mlx4_err(persist->dev, "mlx4_restart_one_up failed, ret=%d\n",
+			 err);
 
 	return err;
 }
 
 static const struct devlink_ops mlx4_devlink_ops = {
 	.port_type_set	= mlx4_devlink_port_type_set,
-	.reload		= mlx4_devlink_reload,
+	.reload_down	= mlx4_devlink_reload_down,
+	.reload_up	= mlx4_devlink_reload_up,
 };
 
 static int mlx4_init_one(struct pci_dev *pdev, const struct pci_device_id *id)
@@ -4163,7 +4180,13 @@ static int restore_current_port_types(struct mlx4_dev *dev,
 	return err;
 }
 
-int mlx4_restart_one(struct pci_dev *pdev, bool reload, struct devlink *devlink)
+static void mlx4_restart_one_down(struct pci_dev *pdev)
+{
+	mlx4_unload_one(pdev);
+}
+
+static int mlx4_restart_one_up(struct pci_dev *pdev, bool reload,
+			       struct devlink *devlink)
 {
 	struct mlx4_dev_persistent *persist = pci_get_drvdata(pdev);
 	struct mlx4_dev	 *dev  = persist->dev;
@@ -4175,7 +4198,6 @@ int mlx4_restart_one(struct pci_dev *pdev, bool reload, struct devlink *devlink)
 	total_vfs = dev->persist->num_vfs;
 	memcpy(nvfs, dev->persist->nvfs, sizeof(dev->persist->nvfs));
 
-	mlx4_unload_one(pdev);
 	if (reload)
 		mlx4_devlink_param_load_driverinit_values(devlink);
 	err = mlx4_load_one(pdev, pci_dev_data, total_vfs, nvfs, priv, 1);
@@ -4194,6 +4216,12 @@ int mlx4_restart_one(struct pci_dev *pdev, bool reload, struct devlink *devlink)
 	return err;
 }
 
+int mlx4_restart_one(struct pci_dev *pdev)
+{
+	mlx4_restart_one_down(pdev);
+	return mlx4_restart_one_up(pdev, false, NULL);
+}
+
 #define MLX_SP(id) { PCI_VDEVICE(MELLANOX, id), MLX4_PCI_DEV_FORCE_SENSE_PORT }
 #define MLX_VF(id) { PCI_VDEVICE(MELLANOX, id), MLX4_PCI_DEV_IS_VF }
 #define MLX_GN(id) { PCI_VDEVICE(MELLANOX, id), 0 }