NETDEV_HAS_UPPER_DEV(9)               Network device support              NETDEV_HAS_UPPER_DEV(9)



NAME
       netdev_has_upper_dev - Check if device is linked to an upper device

SYNOPSIS
       bool netdev_has_upper_dev(struct net_device * dev, struct net_device * upper_dev);

ARGUMENTS
       dev
           device

       upper_dev
           upper device to check

DESCRIPTION
       Find out if a device is linked to specified upper device and return true in case it is.
       Note that this checks only immediate upper device, not through a complete stack of
       devices. The caller must hold the RTNL lock.

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