| .. 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. |