netdev_upper_dev_link (9) Linux Manual Page
netdev_upper_dev_link – Add a link to the upper device
Synopsis
int netdev_upper_dev_link(struct net_device *dev, struct net_device *upper_dev);Arguments
dev
-
- device
upper_dev
- new upper device
Description
Adds a link to device which is upper to this one. 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.