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authorSridhar Samudrala <sridhar.samudrala@intel.com>2018-05-24 19:55:13 +0300
committerDavid S. Miller <davem@davemloft.net>2018-05-29 05:59:54 +0300
commit30c8bd5aa8b2c78546c3e52337101b9c85879320 (patch)
tree25da9be5c372249e23b95eeda081fdad34417dc4 /net/Kconfig
parentcb1603948a0b80f27d2525bb7ac0d4bbb3849926 (diff)
downloadlinux-30c8bd5aa8b2c78546c3e52337101b9c85879320.tar.xz
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 <sridhar.samudrala@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/Kconfig')
-rw-r--r--net/Kconfig13
1 files changed, 13 insertions, 0 deletions
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.