net/mlx5: Add devlink reload

Implement devlink reload for mlx5.

Usage example:
devlink dev reload pci/0000:06:00.0

Signed-off-by: Michael Guralnik <michaelgur@mellanox.com>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/devlink.c b/drivers/net/ethernet/mellanox/mlx5/core/devlink.c
index b2c26388edb1c1104deca0c84a33cb4aa5b20a60..ac108f1e5bd618aa01297c23c541c1ba45b5cf65 100644 (file)
--- a/drivers/net/ethernet/mellanox/mlx5/core/devlink.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/devlink.c
@@ -85,6 +85,22 @@ mlx5_devlink_info_get(struct devlink *devlink, struct devlink_info_req *req,
        return 0;
 }
 
+static int mlx5_devlink_reload_down(struct devlink *devlink, bool netns_change,
+                                   struct netlink_ext_ack *extack)
+{
+       struct mlx5_core_dev *dev = devlink_priv(devlink);
+
+       return mlx5_unload_one(dev, false);
+}
+
+static int mlx5_devlink_reload_up(struct devlink *devlink,
+                                 struct netlink_ext_ack *extack)
+{
+       struct mlx5_core_dev *dev = devlink_priv(devlink);
+
+       return mlx5_load_one(dev, false);
+}
+
 static const struct devlink_ops mlx5_devlink_ops = {
 #ifdef CONFIG_MLX5_ESWITCH
        .eswitch_mode_set = mlx5_devlink_eswitch_mode_set,
@@ -96,6 +112,8 @@ static const struct devlink_ops mlx5_devlink_ops = {
 #endif
        .flash_update = mlx5_devlink_flash_update,
        .info_get = mlx5_devlink_info_get,
+       .reload_down = mlx5_devlink_reload_down,
+       .reload_up = mlx5_devlink_reload_up,
 };
 
 struct devlink *mlx5_devlink_alloc(void)
@@ -235,6 +253,7 @@ int mlx5_devlink_register(struct devlink *devlink, struct device *dev)
                goto params_reg_err;
        mlx5_devlink_set_params_init_values(devlink);
        devlink_params_publish(devlink);
+       devlink_reload_enable(devlink);
        return 0;
 
 params_reg_err:
@@ -244,6 +263,7 @@ params_reg_err:
 
 void mlx5_devlink_unregister(struct devlink *devlink)
 {
+       devlink_reload_disable(devlink);
        devlink_params_unregister(devlink, mlx5_devlink_params,
                                  ARRAY_SIZE(mlx5_devlink_params));
        devlink_unregister(devlink);

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/main.c b/drivers/net/ethernet/mellanox/mlx5/core/main.c
index c9a091d3226ccbadd7b0dbca3fcd6a01b3cf5a88..31fbfd6e8bb9a75e0a61fbbf030a954c693d17bc 100644 (file)
--- a/drivers/net/ethernet/mellanox/mlx5/core/main.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/main.c
@@ -1168,7 +1168,7 @@ static void mlx5_unload(struct mlx5_core_dev *dev)
        mlx5_put_uars_page(dev, dev->priv.uar);
 }
 
-static int mlx5_load_one(struct mlx5_core_dev *dev, bool boot)
+int mlx5_load_one(struct mlx5_core_dev *dev, bool boot)
 {
        int err = 0;
 
@@ -1226,7 +1226,7 @@ function_teardown:
        return err;
 }
 
-static int mlx5_unload_one(struct mlx5_core_dev *dev, bool cleanup)
+int mlx5_unload_one(struct mlx5_core_dev *dev, bool cleanup)
 {
        if (cleanup) {
                mlx5_unregister_device(dev);

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/mlx5_core.h b/drivers/net/ethernet/mellanox/mlx5/core/mlx5_core.h
index b100489dc85c86fecedf7290683ab98a9bcf7c54..da67b28d6e23e621bac2c014b26cf811274ed10f 100644 (file)
--- a/drivers/net/ethernet/mellanox/mlx5/core/mlx5_core.h
+++ b/drivers/net/ethernet/mellanox/mlx5/core/mlx5_core.h
@@ -243,4 +243,7 @@ enum {
 
 u8 mlx5_get_nic_state(struct mlx5_core_dev *dev);
 void mlx5_set_nic_state(struct mlx5_core_dev *dev, u8 state);
+
+int mlx5_unload_one(struct mlx5_core_dev *dev, bool cleanup);
+int mlx5_load_one(struct mlx5_core_dev *dev, bool boot);
 #endif /* __MLX5_CORE_H__ */