devlink: Add APIs to publish, unpublish individual parameter

Enable drivers to publish/unpublish individual parameter.

Signed-off-by: Parav Pandit <parav@nvidia.com>
Reviewed-by: Jiri Pirko <jiri@nvidia.com>
Reviewed-by: Leon Romanovsky <leonro@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/include/net/devlink.h b/include/net/devlink.h
index f6459ee..1151497 100644 (file)
--- a/include/net/devlink.h
+++ b/include/net/devlink.h
@@ -1651,6 +1651,10 @@ void devlink_param_unregister(struct devlink *devlink,
                              const struct devlink_param *param);
 void devlink_params_publish(struct devlink *devlink);
 void devlink_params_unpublish(struct devlink *devlink);
+void devlink_param_publish(struct devlink *devlink,
+                          const struct devlink_param *param);
+void devlink_param_unpublish(struct devlink *devlink,
+                            const struct devlink_param *param);
 int devlink_port_params_register(struct devlink_port *devlink_port,
                                 const struct devlink_param *params,
                                 size_t params_count);

diff --git a/net/core/devlink.c b/net/core/devlink.c
index 6292911..ee97873 100644 (file)
--- a/net/core/devlink.c
+++ b/net/core/devlink.c
@@ -9982,6 +9982,54 @@ void devlink_params_unpublish(struct devlink *devlink)
 }
 EXPORT_SYMBOL_GPL(devlink_params_unpublish);
 
+/**
+ * devlink_param_publish - publish one configuration parameter
+ *
+ * @devlink: devlink
+ * @param: one configuration parameter
+ *
+ * Publish previously registered configuration parameter.
+ */
+void devlink_param_publish(struct devlink *devlink,
+                          const struct devlink_param *param)
+{
+       struct devlink_param_item *param_item;
+
+       list_for_each_entry(param_item, &devlink->param_list, list) {
+               if (param_item->param != param || param_item->published)
+                       continue;
+               param_item->published = true;
+               devlink_param_notify(devlink, 0, param_item,
+                                    DEVLINK_CMD_PARAM_NEW);
+               break;
+       }
+}
+EXPORT_SYMBOL_GPL(devlink_param_publish);
+
+/**
+ * devlink_param_unpublish - unpublish one configuration parameter
+ *
+ * @devlink: devlink
+ * @param: one configuration parameter
+ *
+ * Unpublish previously registered configuration parameter.
+ */
+void devlink_param_unpublish(struct devlink *devlink,
+                            const struct devlink_param *param)
+{
+       struct devlink_param_item *param_item;
+
+       list_for_each_entry(param_item, &devlink->param_list, list) {
+               if (param_item->param != param || !param_item->published)
+                       continue;
+               param_item->published = false;
+               devlink_param_notify(devlink, 0, param_item,
+                                    DEVLINK_CMD_PARAM_DEL);
+               break;
+       }
+}
+EXPORT_SYMBOL_GPL(devlink_param_unpublish);
+
 /**
  *     devlink_port_params_register - register port configuration parameters
  *