From 30c8bd5aa8b2c78546c3e52337101b9c85879320 Mon Sep 17 00:00:00 2001 From: Sridhar Samudrala Date: Thu, 24 May 2018 09:55:13 -0700 Subject: net: Introduce generic failover module 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 migration of VMs with direct attached VFs by failing over to the paravirtual datapath when the VF is unplugged. Signed-off-by: Sridhar Samudrala Signed-off-by: David S. Miller --- net/Kconfig | 13 +++++++++++++ 1 file changed, 13 insertions(+) (limited to 'net/Kconfig') diff --git a/net/Kconfig b/net/Kconfig index ba554cedb615..f738a6f27665 100644 --- a/net/Kconfig +++ b/net/Kconfig @@ -432,6 +432,19 @@ config MAY_USE_DEVLINK config PAGE_POOL bool +config FAILOVER + tristate "Generic failover module" + help + 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. + endif # if NET # Used by archs to tell that they support BPF JIT compiler plus which flavour. -- cgit v1.2.3-59-g8ed1b