| .. 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. |
