Bug 1467914 - Neutron support for VNIC_VIRTIO_FORWARDER
Summary: Neutron support for VNIC_VIRTIO_FORWARDER
Alias: None
Product: Red Hat OpenStack
Classification: Red Hat
Component: python-neutron-lib
Version: 12.0 (Pike)
Hardware: Unspecified
OS: Unspecified
Target Milestone: beta
: 12.0 (Pike)
Assignee: Ihar Hrachyshka
QA Contact: Toni Freger
Depends On:
Blocks: 1389435 1467916 1467918 1467926
TreeView+ depends on / blocked
Reported: 2017-07-05 13:41 UTC by Jan Gutter (Netronome)
Modified: 2018-02-05 19:10 UTC (History)
15 users (show)

Fixed In Version: python-neutron-lib-1.9.0-0.20170720214524.7581af4.el7ost
Doc Type: If docs needed, set a value
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Clone Of:
Last Closed: 2017-12-13 21:37:25 UTC
Target Upstream Version:

Attachments (Terms of Use)

System ID Private Priority Status Summary Last Updated
OpenStack gerrit 483530 0 None None None 2017-07-17 14:04:30 UTC
Red Hat Product Errata RHEA-2017:3462 0 normal SHIPPED_LIVE Red Hat OpenStack Platform 12.0 Enhancement Advisory 2018-02-16 01:43:25 UTC

Description Jan Gutter (Netronome) 2017-07-05 13:41:29 UTC

The intention of this bug is to provide insight into a feature proposed by Netronome for inclusion in RHOSP12.


Work is underway to extend the list of supported VNIC types in OpenStack in order to support a lightweight VF-to-vhostuser virtio proxy. This mechanism would allow a VM to boot with a vhostuser interface where the proxy on the hypervisor does not itself to complex switching.

The key difference between standard vhostuser plugs is that VNIC_VIRTIO_FORWARDER will consume a VF resource.

This provides another plugging method into accelerated and offloaded NICs.


Patches are in internal testing, RFE+patches will be submitted by 07/07 2017 to Neutron.

Comment 1 Ihar Hrachyshka 2017-07-11 14:05:33 UTC
Were patches submitted?

Comment 2 Jan Gutter (Netronome) 2017-07-14 16:46:56 UTC
(In reply to Ihar Hrachyshka from comment #1)
> Were patches submitted?

Apologies, late in the dev cycle it was discovered that a new VIF type would be required. The patches are submitted at:


End-to-end testing with Nova, Neutron, OS-VIF and the external plugins have verified that these changes to core Neutron are sufficient.

Comment 3 Jan Gutter (Netronome) 2017-07-20 10:19:15 UTC
The review was merged and landed in neutron-lib 1.9.0

Comment 6 Ihar Hrachyshka 2017-11-06 21:57:10 UTC
Verified that the symbol is shipped with neutron-lib. Note that support for the new vif type is a broader request and is out of scope for this particular bug.

Comment 9 errata-xmlrpc 2017-12-13 21:37:25 UTC
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.


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