[ovs-discuss] OVS DPDK and VFIO/UIO

[Chandran, Sugesh]

Please see the link below for difference between VFIO and UIO drivers in DPDK

http://dpdk-guide.gitlab.io/dpdk-guide/setup/binding.html


Regards
_Sugesh

From: Shivaram Mysore [mailto:shivaram.mysore at gmail.com]
Sent: Thursday, March 23, 2017 1:04 PM
To: Chandran, Sugesh <sugesh.chandran at intel.com>
Cc: ovs-discuss at openvswitch.org
Subject: Re: [ovs-discuss] OVS DPDK and VFIO/UIO

Nope.  I meant OVS as the switching fabric for a virtualized infrastructure - need VFIO

If using OVS as a hardware switch (server with NICS where clients are connected to raw ethernet ports for switching), then UIO is the way to go. --> this is my assertion needing validation.

Thanks

On Thu, Mar 23, 2017 at 12:59 PM, Chandran, Sugesh <sugesh.chandran at intel.com<mailto:sugesh.chandran at intel.com>> wrote:


Regards
_Sugesh

From: Shivaram Mysore [mailto:shivaram.mysore at gmail.com<mailto:shivaram.mysore at gmail.com>]
Sent: Thursday, March 23, 2017 12:56 PM
To: Chandran, Sugesh <sugesh.chandran at intel.com<mailto:sugesh.chandran at intel.com>>
Cc: ovs-discuss at openvswitch.org<mailto:ovs-discuss at openvswitch.org>
Subject: Re: [ovs-discuss] OVS DPDK and VFIO/UIO

Thanks Sugesh.

Is VFIO required only when we have a virtualized infrastructure?
[Sugesh] Do you mean running OVS-DPDK inside VM/Connecting VMs to the OVS-DPDK?In either case,  you need only uio driver.


Thanks

On Thu, Mar 23, 2017 at 12:52 PM, Chandran, Sugesh <sugesh.chandran at intel.com<mailto:sugesh.chandran at intel.com>> wrote:


Regards
_Sugesh

From: ovs-discuss-bounces at openvswitch.org<mailto:ovs-discuss-bounces at openvswitch.org> [mailto:ovs-discuss-bounces at openvswitch.org<mailto:ovs-discuss-bounces at openvswitch.org>] On Behalf Of Shivaram Mysore
Sent: Thursday, March 23, 2017 10:54 AM
To: ovs-discuss at openvswitch.org<mailto:ovs-discuss at openvswitch.org>
Subject: [ovs-discuss] OVS DPDK and VFIO/UIO

Hello,

If one is setting up a OVS Switch with DPDK on a Intel Server with Intel NICs on Ubuntu 16.10, they could just use the UIO drivers right?  Do they don't need VFIO configuration [1] correct?  Assume that they Intel Server here is mainly acting as a hardware soft-switch is not running any virtualization.

Am I correct in my understanding?

[1] http://docs.openvswitch.org/en/latest/intro/install/dpdk/
[Sugesh] Yes, You can use the only UIO drivers to make it work


Thanks

/Shivaram


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