Re: [opencontrail-dev] vrouter dpdk support - both vhost and IVSHMEM?

[Joo Kim]

After receiving packet via PMD,   does dpdk-vRouter demux between overlay
and non-overlay using  vr_pkt_type_is_overlay()?  And does demux happen
before or after route lookup?   -thanks-


On Mon, Oct 10, 2016 at 12:13 PM, Rajagopalan Sivaramakrishnan <
r...@juniper.net> wrote:

> Yes. Non-overlay packets (for example, ping/ssh to the compute node) are
> sent to the host network stack.
>
>
>
> Raja
>
>
>
> *From: *Joo Kim <itsolut...@gmail.com>
> *Date: *Monday, October 10, 2016 at 11:52 AM
>
> *To: *Raja Sivaramakrishnan <r...@juniper.net>
> *Cc: *"dev@lists.opencontrail.org" <dev@lists.opencontrail.org>
> *Subject: *Re: [opencontrail-dev] vrouter dpdk support - both vhost and
> IVSHMEM?
>
>
>
> What types of traffic is sent to host network stack?  For network
> applications  on Host machine ?
>
>
>
> On Mon, Oct 10, 2016 at 9:29 AM, Rajagopalan Sivaramakrishnan <
> r...@juniper.net> wrote:
>
> vrouter uses KNI to send packets to the host network stack. There is a
> vhost0 interface which is created for this purpose and it uses KNI.
>
>
>
> Raja
>
>
>
> *From: *Joo Kim <itsolut...@gmail.com>
> *Date: *Monday, October 10, 2016 at 1:31 AM
> *To: *Raja Sivaramakrishnan <r...@juniper.net>
> *Cc: *"dev@lists.opencontrail.org" <dev@lists.opencontrail.org>
> *Subject: *Re: [opencontrail-dev] vrouter dpdk support - both vhost and
> IVSHMEM?
>
>
>
> Raja,
>
>
>
> Thanks for the clarification.
>
>
>
> BTW, as a related query, why(for what purpose) dpdk kni  is used in
> userspace dpdk vrouter? Since userspace vrouter receives/transmits
> packet via poll mode driver and then sends/receives to/from VM via
> userspace dpdk vhost-net,I don't see why KNI is necessary in userspace
> vrouter...
>
> As I understand, KNI is just for improving the performance of the existing
> applications going through Linux kernel network stack.
>
>
>
> Thanks
>
>
>
> On Wed, Oct 5, 2016 at 2:11 PM, Rajagopalan Sivaramakrishnan <
> r...@juniper.net> wrote:
>
> We don’t have a plan to support ivshmem at the moment.
>
>
>
> Raja
>
>
>
> *From: *Dev <dev-boun...@lists.opencontrail.org> on behalf of Joo Kim <
> itsolut...@gmail.com>
> *Date: *Sunday, October 2, 2016 at 2:59 AM
> *To: *"dev@lists.opencontrail.org" <dev@lists.opencontrail.org>
> *Subject: *[opencontrail-dev] vrouter dpdk support - both vhost and
> IVSHMEM?
>
>
>
> Hello,
>
>
>
> Regarding vrouter dpdk support for host and vm (data packet)communication,
>
>
>
> looks like vrouter code uses vHost mechanism
>
> (
>
> http://images.slideplayer.com/11/3319449/slides/slide_11.jpg
>
> )
>
>
>
> Then, any plan on supporting IVSHMEM mechanism also?
>
>
>
> -Thanks-
>
>
>
>
>
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Re: [opencontrail-dev] vrouter dpdk support - both vhost and IVSHMEM?

[Rajagopalan Sivaramakrishnan]

Yes. Non-overlay packets (for example, ping/ssh to the compute node) are sent 
to the host network stack.

Raja

From: Joo Kim <itsolut...@gmail.com>
Date: Monday, October 10, 2016 at 11:52 AM
To: Raja Sivaramakrishnan <r...@juniper.net>
Cc: "dev@lists.opencontrail.org" <dev@lists.opencontrail.org>
Subject: Re: [opencontrail-dev] vrouter dpdk support - both vhost and IVSHMEM?

What types of traffic is sent to host network stack?  For network applications  
on Host machine ?

On Mon, Oct 10, 2016 at 9:29 AM, Rajagopalan Sivaramakrishnan 
<r...@juniper.net<mailto:r...@juniper.net>> wrote:
vrouter uses KNI to send packets to the host network stack. There is a vhost0 
interface which is created for this purpose and it uses KNI.

Raja

From: Joo Kim <itsolut...@gmail.com<mailto:itsolut...@gmail.com>>
Date: Monday, October 10, 2016 at 1:31 AM
To: Raja Sivaramakrishnan <r...@juniper.net<mailto:r...@juniper.net>>
Cc: "dev@lists.opencontrail.org<mailto:dev@lists.opencontrail.org>" 
<dev@lists.opencontrail.org<mailto:dev@lists.opencontrail.org>>
Subject: Re: [opencontrail-dev] vrouter dpdk support - both vhost and IVSHMEM?

Raja,

Thanks for the clarification.

BTW, as a related query, why(for what purpose) dpdk kni  is used in userspace 
dpdk vrouter? Since userspace vrouter receives/transmits packet via poll 
mode driver and then sends/receives to/from VM via  userspace dpdk vhost-net,   
 I don't see why KNI is necessary in userspace vrouter...
As I understand, KNI is just for improving the performance of the existing 
applications going through Linux kernel network stack.

Thanks

On Wed, Oct 5, 2016 at 2:11 PM, Rajagopalan Sivaramakrishnan 
<r...@juniper.net<mailto:r...@juniper.net>> wrote:
We don’t have a plan to support ivshmem at the moment.

Raja

From: Dev 
<dev-boun...@lists.opencontrail.org<mailto:dev-boun...@lists.opencontrail.org>> 
on behalf of Joo Kim <itsolut...@gmail.com<mailto:itsolut...@gmail.com>>
Date: Sunday, October 2, 2016 at 2:59 AM
To: "dev@lists.opencontrail.org<mailto:dev@lists.opencontrail.org>" 
<dev@lists.opencontrail.org<mailto:dev@lists.opencontrail.org>>
Subject: [opencontrail-dev] vrouter dpdk support - both vhost and IVSHMEM?

Hello,

Regarding vrouter dpdk support for host and vm (data packet)communication,

looks like vrouter code uses vHost mechanism
(
http://images.slideplayer.com/11/3319449/slides/slide_11.jpg
)

Then, any plan on supporting IVSHMEM mechanism also?

-Thanks-


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Re: [opencontrail-dev] vrouter dpdk support - both vhost and IVSHMEM?

[Rajagopalan Sivaramakrishnan]

vrouter uses KNI to send packets to the host network stack. There is a vhost0 
interface which is created for this purpose and it uses KNI.

Raja

From: Joo Kim <itsolut...@gmail.com>
Date: Monday, October 10, 2016 at 1:31 AM
To: Raja Sivaramakrishnan <r...@juniper.net>
Cc: "dev@lists.opencontrail.org" <dev@lists.opencontrail.org>
Subject: Re: [opencontrail-dev] vrouter dpdk support - both vhost and IVSHMEM?

Raja,

Thanks for the clarification.

BTW, as a related query, why(for what purpose) dpdk kni  is used in userspace 
dpdk vrouter? Since userspace vrouter receives/transmits packet via poll 
mode driver and then sends/receives to/from VM via  userspace dpdk vhost-net,   
 I don't see why KNI is necessary in userspace vrouter...
As I understand, KNI is just for improving the performance of the existing 
applications going through Linux kernel network stack.

Thanks

On Wed, Oct 5, 2016 at 2:11 PM, Rajagopalan Sivaramakrishnan 
<r...@juniper.net<mailto:r...@juniper.net>> wrote:
We don’t have a plan to support ivshmem at the moment.

Raja

From: Dev 
<dev-boun...@lists.opencontrail.org<mailto:dev-boun...@lists.opencontrail.org>> 
on behalf of Joo Kim <itsolut...@gmail.com<mailto:itsolut...@gmail.com>>
Date: Sunday, October 2, 2016 at 2:59 AM
To: "dev@lists.opencontrail.org<mailto:dev@lists.opencontrail.org>" 
<dev@lists.opencontrail.org<mailto:dev@lists.opencontrail.org>>
Subject: [opencontrail-dev] vrouter dpdk support - both vhost and IVSHMEM?

Hello,

Regarding vrouter dpdk support for host and vm (data packet)communication,

looks like vrouter code uses vHost mechanism
(
http://images.slideplayer.com/11/3319449/slides/slide_11.jpg
)

Then, any plan on supporting IVSHMEM mechanism also?

-Thanks-

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Re: [opencontrail-dev] vrouter dpdk support - both vhost and IVSHMEM?

[Joo Kim]

Raja,

Thanks for the clarification.

BTW, as a related query, why(for what purpose) dpdk kni  is used in
userspace dpdk vrouter? Since userspace vrouter receives/transmits
packet via poll mode driver and then sends/receives to/from VM via
userspace dpdk vhost-net,I don't see why KNI is necessary in userspace
vrouter...
As I understand, KNI is just for improving the performance of the existing
applications going through Linux kernel network stack.

Thanks

On Wed, Oct 5, 2016 at 2:11 PM, Rajagopalan Sivaramakrishnan <
r...@juniper.net> wrote:

> We don’t have a plan to support ivshmem at the moment.
>
>
>
> Raja
>
>
>
> *From: *Dev  on behalf of Joo Kim <
> itsolut...@gmail.com>
> *Date: *Sunday, October 2, 2016 at 2:59 AM
> *To: *"dev@lists.opencontrail.org" 
> *Subject: *[opencontrail-dev] vrouter dpdk support - both vhost and
> IVSHMEM?
>
>
>
> Hello,
>
>
>
> Regarding vrouter dpdk support for host and vm (data packet)communication,
>
>
>
> looks like vrouter code uses vHost mechanism
>
> (
>
> http://images.slideplayer.com/11/3319449/slides/slide_11.jpg
>
> )
>
>
>
> Then, any plan on supporting IVSHMEM mechanism also?
>
>
>
> -Thanks-
>
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Re: [opencontrail-dev] vrouter dpdk support - both vhost and IVSHMEM?

[Rajagopalan Sivaramakrishnan]

We don’t have a plan to support ivshmem at the moment.

Raja

From: Dev  on behalf of Joo Kim 

Date: Sunday, October 2, 2016 at 2:59 AM
To: "dev@lists.opencontrail.org" 
Subject: [opencontrail-dev] vrouter dpdk support - both vhost and IVSHMEM?

Hello,

Regarding vrouter dpdk support for host and vm (data packet)communication,

looks like vrouter code uses vHost mechanism
(
http://images.slideplayer.com/11/3319449/slides/slide_11.jpg
)

Then, any plan on supporting IVSHMEM mechanism also?

-Thanks-
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