Bug 702228

Summary:	RFE: Multiqueue virtio-net support in libvirt
Product:	Red Hat Enterprise Linux 6	Reporter:	jason wang <jasowang>
Component:	libvirt	Assignee:	Michal Privoznik <mprivozn>
Status:	CLOSED WONTFIX	QA Contact:	Virtualization Bugs <virt-bugs>
Severity:	unspecified	Docs Contact:
Priority:	unspecified
Version:	6.3	CC:	bsarathy, dallan, mst
Target Milestone:	rc	Keywords:	FutureFeature
Target Release:	---
Hardware:	Unspecified
OS:	Unspecified
Whiteboard:
Fixed In Version:		Doc Type:	Enhancement
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2011-11-10 21:07:58 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:

Description jason wang 2011-05-05 06:27:59 UTC

Description of problem:
The multiqueue virtio-net features was expected to be added in 6.3, so need the libvirt support for this.

Two steps many need:
1) Setup the file descriptors for the backend (tap/macvtap) of a mutiqueue capable device

Only macvtap support multiqueue now and it was implemented by opening the same tap device many times. TAP does not have multiqueue support but would be added in the future. But the API used by macvtap could not used, new ioctl() maybe added. To keep the API compatible, the same ioctl() maybe added to macvtap to create new queue.

2) Pass the many file descriptors to qemu

The cli is not determined yet, but libvirt need to have a way to pass many fds to a netdev of qemu.

Version-Release number of selected component (if applicable):

Possibly 6.3

How reproducible:


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