[dpdk-users] How to receive packets from non-DPDK requests?

[dpdk-users] How to receive packets from non-DPDK requests?

[Sungho Hong]

Hello DPDK users,

I am trying to receive the packets from non-DPDK requests,
Currently, I am trying to send ARP requests, but it seems that DPDK
application only understands the packets that are sent by DPDK.

Is there some configuration that needs to be done in order to receive
non-DPDK requests?

Re: [dpdk-users] How to receive packets from non-DPDK requests?

[Wiles, Keith]

> On Nov 14, 2018, at 11:35 AM, Sungho Hong <maverickjin88@gmail.com> wrote:
> 
> Hello DPDK users,
> 
> I am trying to receive the packets from non-DPDK requests,
> Currently, I am trying to send ARP requests, but it seems that DPDK
> application only understands the packets that are sent by DPDK.
> 
> Is there some configuration that needs to be done in order to receive
> non-DPDK requests?

Not sure what you are asking here, but DPDK does not have a ARP or network stack of any kind. There are a few network stacks for DPDK just google it.

If you want to detect ARP packets then you need to look at the L2 header and then you would need to write the ARP protocol handling code.

HTH

Regards,
Keith

Re: [dpdk-users] How to receive packets from non-DPDK requests?

[Sungho Hong]

Thanks for the reply, but excluding  the ARP,
Is it possible to receive POSIX TCP or UDP packets using DPDK-application?

Because DPDK application for me right now, only recognizes the packets sent
from DPDK only. But by the sound of it, and based on your reply

DPDK can receive packets from non-DPDK correct (POSIX, UDP, TCP)?
How can we receive any packets at all from non-DPDK?

Re: [dpdk-users] How to receive packets from non-DPDK requests?

[Wiles, Keith]

> On Nov 14, 2018, at 1:05 PM, Sungho Hong <maverickjin88@gmail.com> wrote:
> 
> Thanks for the reply, but excluding  the ARP, 
> Is it possible to receive POSIX TCP or UDP packets using DPDK-application? 
> 
> Because DPDK application for me right now, only recognizes the packets sent from DPDK only. But by the sound of it, and based on your reply 
> 
> DPDK can receive packets from non-DPDK correct (POSIX, UDP, TCP)? 
> How can we receive any packets at all from non-DPDK? 

DPDK is just a high speed packet I/O system on top of normal NICs in most cases.

DPDK can receive any packet that is on the wire if you enable promiscuous mode for that port. If you do not have promiscuous mode enabled then the destination MAC address in the L3 header must match the NIC’s MAC address.
> 
> 

Regards,
Keith

Re: [dpdk-users] How to receive packets from non-DPDK requests?

[Wiles, Keith]

> On Nov 14, 2018, at 1:09 PM, Wiles, Keith <keith.wiles@intel.com> wrote:
> 
> 
> 
>> On Nov 14, 2018, at 1:05 PM, Sungho Hong <maverickjin88@gmail.com> wrote:
>> 
>> Thanks for the reply, but excluding  the ARP, 
>> Is it possible to receive POSIX TCP or UDP packets using DPDK-application? 
>> 
>> Because DPDK application for me right now, only recognizes the packets sent from DPDK only. But by the sound of it, and based on your reply 
>> 
>> DPDK can receive packets from non-DPDK correct (POSIX, UDP, TCP)? 
>> How can we receive any packets at all from non-DPDK? 
> 
> DPDK is just a high speed packet I/O system on top of normal NICs in most cases.
> 
> DPDK can receive any packet that is on the wire if you enable promiscuous mode for that port. If you do not have promiscuous mode enabled then the destination MAC address in the L3 header must match the NIC’s MAC address.

Mistype L2 header.
>> 
>> 
> 
> Regards,
> Keith
> 

Regards,
Keith

Re: [dpdk-users] How to receive packets from non-DPDK requests?

[Sungho Hong]

Thank you!

On Wed, Nov 14, 2018 at 12:11 PM Wiles, Keith <keith.wiles@intel.com> wrote:

>
>
> > On Nov 14, 2018, at 1:09 PM, Wiles, Keith <keith.wiles@intel.com> wrote:
> >
> >
> >
> >> On Nov 14, 2018, at 1:05 PM, Sungho Hong <maverickjin88@gmail.com>
> wrote:
> >>
> >> Thanks for the reply, but excluding  the ARP,
> >> Is it possible to receive POSIX TCP or UDP packets using
> DPDK-application?
> >>
> >> Because DPDK application for me right now, only recognizes the packets
> sent from DPDK only. But by the sound of it, and based on your reply
> >>
> >> DPDK can receive packets from non-DPDK correct (POSIX, UDP, TCP)?
> >> How can we receive any packets at all from non-DPDK?
> >
> > DPDK is just a high speed packet I/O system on top of normal NICs in
> most cases.
> >
> > DPDK can receive any packet that is on the wire if you enable
> promiscuous mode for that port. If you do not have promiscuous mode enabled
> then the destination MAC address in the L3 header must match the NIC’s MAC
> address.
>
> Mistype L2 header.
> >>
> >>
> >
> > Regards,
> > Keith
> >
>
> Regards,
> Keith
>
>