NETDEV_MASTER_UPPER_(9)               Network device support              NETDEV_MASTER_UPPER_(9)



NAME
       netdev_master_upper_dev_link - Add a master link to the upper device

SYNOPSIS
       int netdev_master_upper_dev_link(struct net_device * dev, struct net_device * upper_dev,
                                        void * upper_priv, void * upper_info);

ARGUMENTS
       dev
           device

       upper_dev
           new upper device

       upper_priv
           upper device private

       upper_info
           upper info to be passed down via notifier

DESCRIPTION
       Adds a link to device which is upper to this one. In this case, only one master upper
       device can be linked, although other non-master devices might be linked as well. The
       caller must hold the RTNL lock. On a failure a negative errno code is returned. On success
       the reference counts are adjusted and the function returns zero.

COPYRIGHT
Kernel Hackers Manual 4.8.                 January 2017                   NETDEV_MASTER_UPPER_(9)