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