Bug 1462592 - RFE: Mellanox hardware offload support for openvswitch
RFE: Mellanox hardware offload support for openvswitch
Status: ON_QA
Product: Red Hat OpenStack
Classification: Red Hat
Component: openstack-nova (Show other bugs)
Unspecified Unspecified
medium Severity medium
: Upstream M2
: 13.0 (Queens)
Assigned To: Stephen Finucane
Joe H. Rahme
: FutureFeature, OtherQA, Triaged
: 1468329 (view as bug list)
Depends On: 1467356 1469552 1470100 1383792 1467354 1467359
Blocks: 1419948 1474827
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Reported: 2017-06-18 22:57 EDT by Moshe Levi
Modified: 2018-03-14 11:12 EDT (History)
20 users (show)

See Also:
Fixed In Version: openstack-nova-17.0.0-0.20180123163703.27eadbc.el7ost
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External Trackers
Tracker ID Priority Status Summary Last Updated
OpenStack gerrit 398265 None master: MERGED nova: hardware offload support for openvswitch (I3f38954bc5cf7b1690182dc8af45078eea275aa4) 2018-02-07 08:53 EST

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Description Moshe Levi 2017-06-18 22:57:04 EDT
In Kernel 4.8 we introduced Traffic Control (TC see [1]) hardware offloads
framework for SR-IOV VFs which allows us to configure the NIC [2].
Subsequent OVS patches [3] allow us to use the TC framework
to offload OVS datapath rules. The feature is merged in ovs upstream. 

To allow the support in openstack we need the following changes:
os-vif - https://review.openstack.org/#/c/460278/
This patch adds plug/unplug when using ovs vif 'OVS_ACCELERATION'. The
plug method will lookup the VF representor and connect it to 'br-int',
while the unplug method will remove the VF representor from 'br-int'.

nova- https://review.openstack.org/#/c/398265/
This patch add support for  VIF_TYPE_OVS_ACCELERATION

neutron patches - https://review.openstack.org/#/c/275616/ & https://review.openstack.org/#/c/452530/
This patch allow OVS mech driver to bind direct (SR-IOV) port.
This will allow to offload the OVS flows using tc to the SR-IOV NIC
and gain accelerate OVS.

The current support is for ovs mechanism driver we will extend the support to other mechanism drivers such odl and ovn.

[1] https://linux.die.net/man/8/tc
[2] http://netdevconf.org/1.2/papers/efraim-gerlitz-sriov-ovs-final.pdf
[3] https://mail.openvswitch.org/pipermail/ovs-dev/2017-April/330606.html
Comment 2 Slava Shwartsman 2017-07-03 09:46:58 EDT
This BZ depends on:
Bug 1467356 - [Mellanox Pike FEAT] openstack-neutron: Add support for OVS HW offload
Bug 1467354 - [Mellanox Pike FEAT] openstack-nova: add support for VIF_TYPE_OVS_ACCELERATION
Bug 1467220 - [Mellanox Pike FEAT] openvswitch: update package
Bug 1467359 - [Mellanox Pike FEAT] python-os-vif: update package
Comment 6 Lee Yarwood 2017-12-07 12:22:42 EST
*** Bug 1468329 has been marked as a duplicate of this bug. ***

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