Revision 8c2ffd9174779014c3fe1f96d9dc3641d9175f00 authored by Linus Torvalds on 24 March 2019, 21:02:26 UTC, committed by Linus Torvalds on 24 March 2019, 21:02:26 UTC
1 parent 17403fa
failover.rst
.. SPDX-License-Identifier: GPL-2.0
========
FAILOVER
========
Overview
========
The failover module provides a generic interface for paravirtual drivers
to register a netdev and a set of ops with a failover instance. The ops
are used as event handlers that get called to handle netdev register/
unregister/link change/name change events on slave pci ethernet devices
with the same mac address as the failover netdev.
This enables paravirtual drivers to use a VF as an accelerated low latency
datapath. It also allows live migration of VMs with direct attached VFs by
failing over to the paravirtual datapath when the VF is unplugged.
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