devlink: remove duplicate port notification

The notification about created port is send from devl_port_register()
function called from ops->port_new(). No need to send it again here,
so remove the call and the helper function.
Signed-off-by: Jiri Pirko <jiri@nvidia.com>
Reviewed-by: Simon Horman <simon.horman@corigine.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/mellanox/mlx5/core/sf/devlink.c

@@ -282,8 +282,7 @@ int mlx5_devlink_sf_port_fn_state_set(struct devlink_port *dl_port,
 
 static int mlx5_sf_add(struct mlx5_core_dev *dev, struct mlx5_sf_table *table,
 		       const struct devlink_port_new_attrs *new_attr,
-		       struct netlink_ext_ack *extack,
-		       unsigned int *new_port_index)
+		       struct netlink_ext_ack *extack)
 {
 	struct mlx5_eswitch *esw = dev->priv.eswitch;
 	struct mlx5_sf *sf;
@@ -297,7 +296,6 @@ static int mlx5_sf_add(struct mlx5_core_dev *dev, struct mlx5_sf_table *table,
 						new_attr->controller, new_attr->sfnum);
 	if (err)
 		goto esw_err;
-	*new_port_index = sf->port_index;
 	trace_mlx5_sf_add(dev, sf->port_index, sf->controller, sf->hw_fn_id, new_attr->sfnum);
 	return 0;
 
@@ -338,8 +336,7 @@ mlx5_sf_new_check_attr(struct mlx5_core_dev *dev, const struct devlink_port_new_
 
 int mlx5_devlink_sf_port_new(struct devlink *devlink,
 			     const struct devlink_port_new_attrs *new_attr,
-			     struct netlink_ext_ack *extack,
-			     unsigned int *new_port_index)
+			     struct netlink_ext_ack *extack)
 {
 	struct mlx5_core_dev *dev = devlink_priv(devlink);
 	struct mlx5_sf_table *table;
@@ -355,7 +352,7 @@ int mlx5_devlink_sf_port_new(struct devlink *devlink,
 				   "Port add is only supported in eswitch switchdev mode or SF ports are disabled.");
 		return -EOPNOTSUPP;
 	}
-	err = mlx5_sf_add(dev, table, new_attr, extack, new_port_index);
+	err = mlx5_sf_add(dev, table, new_attr, extack);
 	mlx5_sf_table_put(table);
 	return err;
 }

drivers/net/ethernet/mellanox/mlx5/core/sf/sf.h

@@ -20,8 +20,7 @@ void mlx5_sf_table_cleanup(struct mlx5_core_dev *dev);
 
 int mlx5_devlink_sf_port_new(struct devlink *devlink,
 			     const struct devlink_port_new_attrs *add_attr,
-			     struct netlink_ext_ack *extack,
-			     unsigned int *new_port_index);
+			     struct netlink_ext_ack *extack);
 int mlx5_devlink_sf_port_del(struct devlink *devlink, unsigned int port_index,
 			     struct netlink_ext_ack *extack);
 int mlx5_devlink_sf_port_fn_state_get(struct devlink_port *dl_port,

include/net/devlink.h

@@ -1500,7 +1500,6 @@ struct devlink_ops {
 	 * @devlink: Devlink instance
 	 * @attrs: attributes of the new port
 	 * @extack: extack for reporting error messages
-	 * @new_port_index: index of the new port
 	 *
 	 * Devlink core will call this device driver function upon user request
 	 * to create a new port function of a specified flavor and optional
@@ -1515,8 +1514,7 @@ struct devlink_ops {
 	 */
 	int (*port_new)(struct devlink *devlink,
 			const struct devlink_port_new_attrs *attrs,
-			struct netlink_ext_ack *extack,
-			unsigned int *new_port_index);
+			struct netlink_ext_ack *extack);
 	/**
 	 * port_del() - Delete a port function
 	 * @devlink: Devlink instance

net/devlink/leftover.c

@@ -1354,45 +1354,12 @@ static int devlink_nl_cmd_port_unsplit_doit(struct sk_buff *skb,
 	return devlink->ops->port_unsplit(devlink, devlink_port, info->extack);
 }
 
-static int devlink_port_new_notify(struct devlink *devlink,
-				   unsigned int port_index,
-				   struct genl_info *info)
-{
-	struct devlink_port *devlink_port;
-	struct sk_buff *msg;
-	int err;
-
-	msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
-	if (!msg)
-		return -ENOMEM;
-
-	lockdep_assert_held(&devlink->lock);
-	devlink_port = devlink_port_get_by_index(devlink, port_index);
-	if (!devlink_port) {
-		err = -ENODEV;
-		goto out;
-	}
-
-	err = devlink_nl_port_fill(msg, devlink_port, DEVLINK_CMD_NEW,
-				   info->snd_portid, info->snd_seq, 0, NULL);
-	if (err)
-		goto out;
-
-	return genlmsg_reply(msg, info);
-
-out:
-	nlmsg_free(msg);
-	return err;
-}
-
 static int devlink_nl_cmd_port_new_doit(struct sk_buff *skb,
 					struct genl_info *info)
 {
 	struct netlink_ext_ack *extack = info->extack;
 	struct devlink_port_new_attrs new_attrs = {};
 	struct devlink *devlink = info->user_ptr[0];
-	unsigned int new_port_index;
-	int err;
 
 	if (!devlink->ops->port_new || !devlink->ops->port_del)
 		return -EOPNOTSUPP;
@@ -1423,17 +1390,7 @@ static int devlink_nl_cmd_port_new_doit(struct sk_buff *skb,
 		new_attrs.sfnum_valid = true;
 	}
 
-	err = devlink->ops->port_new(devlink, &new_attrs, extack,
-				     &new_port_index);
-	if (err)
-		return err;
-
-	err = devlink_port_new_notify(devlink, new_port_index, info);
-	if (err && err != -ENODEV) {
-		/* Fail to send the response; destroy newly created port. */
-		devlink->ops->port_del(devlink, new_port_index, extack);
-	}
-	return err;
+	return devlink->ops->port_new(devlink, &new_attrs, extack);
 }
 
 static int devlink_nl_cmd_port_del_doit(struct sk_buff *skb,