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Message-ID: <20210810132424.9129-7-parav@nvidia.com>
Date:   Tue, 10 Aug 2021 16:24:20 +0300
From:   Parav Pandit <parav@...dia.com>
To:     <davem@...emloft.net>, <kuba@...nel.org>, <netdev@...r.kernel.org>
CC:     <linux-rdma@...r.kernel.org>,
        <virtualization@...ts.linux-foundation.org>,
        Parav Pandit <parav@...dia.com>, Jiri Pirko <jiri@...dia.com>,
        "Leon Romanovsky" <leonro@...dia.com>
Subject: [PATCH RESEND net-next 06/10] devlink: Add APIs to publish, unpublish individual parameter

Enable drivers to publish/unpublish individual parameter.

Signed-off-by: Parav Pandit <parav@...dia.com>
Reviewed-by: Jiri Pirko <jiri@...dia.com>
Reviewed-by: Leon Romanovsky <leonro@...dia.com>
---
 include/net/devlink.h |  4 ++++
 net/core/devlink.c    | 48 +++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 52 insertions(+)

diff --git a/include/net/devlink.h b/include/net/devlink.h
index f6459ee77114..1151497c0ec5 100644
--- 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 629291175af3..ee9787314cff 100644
--- 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
  *
-- 
2.26.2

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