1.. SPDX-License-Identifier: GPL-2.0
 2
 3========
 4FAILOVER
 5========
 6
 7Overview
 8========
 9
10The failover module provides a generic interface for paravirtual drivers
11to register a netdev and a set of ops with a failover instance. The ops
12are used as event handlers that get called to handle netdev register/
13unregister/link change/name change events on slave pci ethernet devices
14with the same mac address as the failover netdev.
15
16This enables paravirtual drivers to use a VF as an accelerated low latency
17datapath. It also allows live migration of VMs with direct attached VFs by
18failing over to the paravirtual datapath when the VF is unplugged.