Re: [dpdk-users] Query on handling packets

[Harsh Patel <thadodaharsh10@gmail.com>]

We have implemented the logic for Tx/Rx as you suggested. We compared the
obtained throughput with another version of same application that uses
Linux raw sockets.
Unfortunately, the throughput we receive in our DPDK application is less by
a good margin. Is this any way we can optimize our implementation or
anything that we are missing?

Thanks and regards
Harsh & Hrishikesh

On Thu, 8 Nov 2018 at 23:14, Wiles, Keith <keith.wiles@intel.com> wrote:

>
>
> On Nov 8, 2018, at 4:58 PM, Harsh Patel <thadodaharsh10@gmail.com> wrote:
>
> Thanks for your insight on the topic. Transmission is working with the
> functions you mentioned. We tried to search for some similar functions for
> handling incoming packets but could not find anything. Can you help us on
> that as well?
>
>
> I do not know if a DPDK API set for RX side. But in the DAPI (DPDK API)
> PoC I was working on and presented at the DPDK Summit last Sept. In the PoC
> I did create a RX side version. The issues it has a bit of tangled up in
> the DAPI PoC.
>
> The basic concept is a call to RX a single packet does a rx_burst of N
> number of packets keeping then in a mbuf list. The code would spin waiting
> for mbufs to arrive or return quickly if a flag was set. When it did find
> RX mbufs it would just return the single mbuf and keep the list of mbufs
> for later requests until the list is empty then do another rx_burst call.
>
> Sorry this is a really quick note on how it works. If you need more
> details we can talk more later.
>
>
> Regards,
> Harsh and Hrishikesh.
>
> On Thu, 8 Nov 2018 at 14:26, Wiles, Keith <keith.wiles@intel.com> wrote:
>
>>
>>
>> > On Nov 8, 2018, at 8:24 AM, Harsh Patel <thadodaharsh10@gmail.com>
>> wrote:
>> >
>> > Hi,
>> > We are working on a project where we are trying to integrate DPDK with
>> > another software. We are able to obtain packets from the other
>> environment
>> > to DPDK environment in one-by-one fashion. On the other hand DPDK
>> allows to
>> > send/receive burst of data packets. We want to know if there is any
>> > functionality in DPDK to achieve this conversion of single incoming
>> packet
>> > to a burst of packets sent on NIC and similarly, conversion of burst
>> read
>> > packets from NIC to send it to other environment sequentially?
>>
>>
>> Search in the docs or lib/librte_ethdev directory on
>> rte_eth_tx_buffer_init, rte_eth_tx_buffer, ...
>>
>>
>>
>> > Thanks and regards
>> > Harsh Patel, Hrishikesh Hiraskar
>> > NITK Surathkal
>>
>> Regards,
>> Keith
>>
>>
> Regards,
> Keith
>
>