Re: vhost [query] : support for multiple ports and non VMDQ devices in vhost switch

On 8/16/2016 8:26 AM, Yuanhan Liu wrote:

On Tue, Aug 09, 2016 at 04:42:33PM +0530, Pankaj Chauhan wrote:

quoted

Hi,

I am working on an NXP platform where we intend to use user space vhost
switch (examples/vhost) as backend for VIRTIO devices. But there are two
limitations in current vhost-switch (examples/vhost)that are restricting my
use case:

1. The vhost-switch application is tightly integrated with Intel VMDQ. Since
my device doesn't have VMDQ i can not use this application directly.

Sorry being late (I was on biz trip last week).

Yes, a vhost example should not do that. We have an internal TODO to
remove it. Actually, to make it optional, and Jianfeng was working on
that. Well, seems that you two have already had some discussions.

Yes I had a discussion with Jianfeng and he has sent the work items on the list.

quoted

2. The vhost-switch application supports only one external or physical port
(non virtio devices), but my requirement is to have multiple physical ports
and multiple virtio devices.

What are you going to achieve? BTW, have you tried testpmd (with vhost-pmd)?
I'm with impression that it might be a better option to you.

	--yliu

My use case is that my machine/board which is not sitting as end node of network but somewhere in between like an router. So the traffic looks something like this:

Physical port 1 -> Enter VM(s) through virtio -> exit from physical port 2

For above use case i need a vhost-back-end which supports multiple physical ports.

Thanks for the suggestion of vhost-pmd ( i was not aware of that), i'll explore possibility of using it for my use case of multiple physical ports.

thanks,
Pankaj