0001 .. SPDX-License-Identifier: GPL-2.0
0002
0003 ========
0004 FAILOVER
0005 ========
0006
0007 Overview
0008 ========
0009
0010 The failover module provides a generic interface for paravirtual drivers
0011 to register a netdev and a set of ops with a failover instance. The ops
0012 are used as event handlers that get called to handle netdev register/
0013 unregister/link change/name change events on slave pci ethernet devices
0014 with the same mac address as the failover netdev.
0015
0016 This enables paravirtual drivers to use a VF as an accelerated low latency
0017 datapath. It also allows live migration of VMs with direct attached VFs by
0018 failing over to the paravirtual datapath when the VF is unplugged.
