centos man page for register_netdevice_notifier

REGISTER_NETDEVICE_N(9) 				      Network device support					   REGISTER_NETDEVICE_N(9)

NAME
       register_netdevice_notifier - register a network notifier block

SYNOPSIS
       int register_netdevice_notifier(struct notifier_block * nb);

ARGUMENTS
       nb
	   notifier

DESCRIPTION
       Register a notifier to be called when network device events occur. The notifier passed is linked into the kernel structures and must not be
       reused until it has been unregistered. A negative errno code is returned on a failure.

       When registered all registration and up events are replayed to the new notifier to allow device to have a race free view of the network
       device list.

COPYRIGHT
Kernel Hackers Manual 3.10					     June 2014						   REGISTER_NETDEVICE_N(9)