Re: [dpdk-dev] DPDK: receive single packet at a time

["Wiles, Keith" <keith.wiles@intel.com>]

From:  Mohan Prasad <kcmohanprasad@gmail.com>
Date:  Thursday, March 31, 2016 at 6:42 AM
To:  Bruce Richardson <bruce.richardson@intel.com>
Cc:  Keith Wiles <keith.wiles@intel.com>, "dev@dpdk.org" <dev@dpdk.org>
Subject:  Re: [dpdk-dev] DPDK: receive single packet at a time


>Could not get it working by disabling the vector PMD, Do you have any example where it works?
>
>
>

I would expect the examples like l2fwd or l2fwd work in this way if the PMD is not enabled. The pktgen-dpdk I know will work with a single packet send and received. The code is on the dpdk.org/download directory.

>
>Thanks,
>Mohan
>
>
>On Wed, Mar 30, 2016 at 11:06 AM, Mohan Prasad 
><kcmohanprasad@gmail.com> wrote:
>
>Hi Bruce,
>
>Could not get it working by disabling the vector PMD, Do you have any example where it works?
>
>Thanks,
>Mohan
>
>
>On Tue, Mar 29, 2016 at 6:46 PM, Bruce Richardson 
><bruce.richardson@intel.com> wrote:
>
>On Tue, Mar 29, 2016 at 06:31:58PM +0530, Mohan Prasad wrote:
>> Hi,
>>
>> I have tried this and it does not work
>>
>
>What type of NIC are you using. If you are using ixgbe or i40e, try disabling
>the vector PMD in your build-time configuration to see if it makes a difference.
>
>However, why do you want to receive just a single packet at a time. Why not just
>receive a burst of packets and then process them one at a time? It's much more
>efficient that way, and you should get better performance from your application.
>
>/Bruce
>
>
>> Thanks,
>> Mohan
>> On Mar 29, 2016 6:26 PM, "Wiles, Keith" <keith.wiles@intel.com> wrote:
>>
>> > >Hi,
>> > >
>> > >Is there any option to receive single packet at a time with dpdk?
>> >
>> > Not sure if this is the answer you are looking for, but if you just
>> > request a single packet with
>> >
>> > struct rte_mbuf *mbuf;
>> > rte_eth_rx_burst(port_id, queue_id, &mbuf, 1);
>> >
>> > will return only one packet as a time.
>> > >
>> > >Thanks,
>> > >Mohan
>> > >
>> >
>> >
>> > Regards,
>> > Keith
>> >
>> >
>> >
>> >
>> >
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>


Regards,
Keith