[dpdk-users] Dealing with pcaps

[dpdk-users] Dealing with pcaps

[Victor Boudon]

Hi,

I'm trying to build an application based on dpdk, but I'm a little lost,
and I
feel like I'm not in the traditional use case:

The idea is that i can have pcaps that a are "dropped" into my application.

What I was thinking of doing:
Build a new driver based on the one in net/pcap. It will read on a queue:
"what pcap should I read", and send the packets through the rx_queue.


- How does the threading model works ? For what I understand, the driver is
a
  "producer", that push the datas to worker thought the rx_queue.
- Can I add add additional metadata for the packet into the rx_queue ? Stuff
  like a pcapid, and the offset of the packet in the pcap.
- Can I detect "are all packet processed" and aggregate statistics based on
that
  ?
- In which case should I use one or multiple rx_queues ?
- Should I implement the tx_queues parts, event if I'm not going to use this
  driver for dumping ?

Thanks,
Victor

Re: [dpdk-users] Dealing with pcaps

[Upendra Pathrikar]

Hi Victor,

I think this page
Libpcap and Ring Based Poll Mode Drivers

http://dpdk.org/doc/guides/nics/pcap_ring.html?highlight=pcap

can help you.

On Fri, May 6, 2016 at 3:11 AM, Victor Boudon <vctrhb@gmail.com> wrote:

> Hi,
>
> I'm trying to build an application based on dpdk, but I'm a little lost,
> and I
> feel like I'm not in the traditional use case:
>
> The idea is that i can have pcaps that a are "dropped" into my application.
>
> What I was thinking of doing:
> Build a new driver based on the one in net/pcap. It will read on a queue:
> "what pcap should I read", and send the packets through the rx_queue.
>
>
> - How does the threading model works ? For what I understand, the driver is
> a
>   "producer", that push the datas to worker thought the rx_queue.
> - Can I add add additional metadata for the packet into the rx_queue ?
> Stuff
>   like a pcapid, and the offset of the packet in the pcap.
> - Can I detect "are all packet processed" and aggregate statistics based on
> that
>   ?
> - In which case should I use one or multiple rx_queues ?
> - Should I implement the tx_queues parts, event if I'm not going to use
> this
>   driver for dumping ?
>
> Thanks,
> Victor
>



-- 





*Regards,Upendra Sunil PathrikarBharti School of Telecom Technology and
Management,Indian Institute of Technology, Delhi.*