ich777/linux_media
1
0
Fork 0
mirror of https://github.com/tbsdtv/linux_media.git synced 2025-07-23 04:33:26 +02:00
Code Issues Packages Projects Releases Wiki Activity

net: Introduce generic failover module

Browse Source 
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 <sridhar.samudrala@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Sridhar Samudrala
2018-05-24 09:55:13 -07:00
committed by David S. Miller
parent cb1603948a
commit 30c8bd5aa8
7 changed files with 407 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

13
net/Kconfig
View File

@@ -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.