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

[Wiles, Keith]

>
>From:  Mohan Prasad <kcmohanprasad at gmail.com>
>Date:  Thursday, March 31, 2016 at 6:42 AM
>To:  Bruce Richardson <bruce.richardson at intel.com>
>Cc:  Keith Wiles <keith.wiles at intel.com>, "dev at dpdk.org" <dev at 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.

Another possible debug is to run one of the l2fwd, l3fwd or pktgen and verify they work or not.
>
>>
>>Thanks,
>>Mohan
>>
>>
>>On Wed, Mar 30, 2016 at 11:06 AM, Mohan Prasad 
>><kcmohanprasad at 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 at 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 at 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
>>> >
>>> >
>>> >
>>> >
>>> >
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>Regards,
>Keith
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Regards,
Keith