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From: Nipun Gupta <nipun.gupta@nxp.com>
To: Pavan Nikhilesh Bhagavatula <pbhagavatula@marvell.com>,
	Jerin Jacob Kollanukkaran <jerinj@marvell.com>,
	Marko Kovacevic <marko.kovacevic@intel.com>,
	Ori Kam <orika@mellanox.com>,
	Bruce Richardson <bruce.richardson@intel.com>,
	Radu Nicolau <radu.nicolau@intel.com>,
	Akhil Goyal <akhil.goyal@nxp.com>,
	Tomasz Kantecki <tomasz.kantecki@intel.com>,
	Sunil Kumar Kori <skori@marvell.com>,
	Hemant Agrawal <hemant.agrawal@nxp.com>
Cc: "dev@dpdk.org" <dev@dpdk.org>
Subject: Re: [dpdk-dev] [PATCH v2 04/11] examples/l3fwd: add ethdev setup based	on eventdev
Date: Thu, 2 Jan 2020 08:49:58 +0000	[thread overview]
Message-ID: <VI1PR04MB4480945387DFC2B55EEE9C28E6200@VI1PR04MB4480.eurprd04.prod.outlook.com> (raw)
In-Reply-To: <CY4PR1801MB186321AB926CBF098F4F604EDE200@CY4PR1801MB1863.namprd18.prod.outlook.com>



> -----Original Message-----
> From: Pavan Nikhilesh Bhagavatula <pbhagavatula@marvell.com>
> Sent: Thursday, January 2, 2020 11:52 AM
> To: Nipun Gupta <nipun.gupta@nxp.com>; Jerin Jacob Kollanukkaran
> <jerinj@marvell.com>; Marko Kovacevic <marko.kovacevic@intel.com>; Ori
> Kam <orika@mellanox.com>; Bruce Richardson
> <bruce.richardson@intel.com>; Radu Nicolau <radu.nicolau@intel.com>;
> Akhil Goyal <akhil.goyal@nxp.com>; Tomasz Kantecki
> <tomasz.kantecki@intel.com>; Sunil Kumar Kori <skori@marvell.com>;
> Hemant Agrawal <hemant.agrawal@nxp.com>
> Cc: dev@dpdk.org
> Subject: RE: [dpdk-dev] [PATCH v2 04/11] examples/l3fwd: add ethdev setup
> based on eventdev
> 
> >> >&local_port_conf);
> >> >> +		if (ret < 0)
> >> >> +			rte_exit(EXIT_FAILURE,
> >> >> +				 "Cannot configure device: err=%d,
> >> >> port=%d\n",
> >> >> +				 ret, port_id);
> >> >> +
> >> >
> >> >We should be using number of RX queues as per the config option
> >> >provided in the arguments.
> >> >L3fwd is supposed to support multiple queue. Right?
> >>
> >> The entire premise of using event device is to showcase packet
> >scheduling to
> >> cores
> >> without the need for splitting packets across multiple queues.
> >>
> >> Queue config is ignored when event mode is selected.
> >
> >For atomic queues, we have single queue providing packets to a single
> >core at a time till processing on that core is completed, irrespective of
> >the flows on that hardware queue.
> >And multiple queues are required to distribute separate packets on
> >separate cores, with these atomic queues maintaining the ordering and
> >not scheduling on other core, until processing core has completed its
> >job.
> >To have this solution generic, we should also take config parameter -
> >(port, number of queues) to enable multiple ethernet RX queues.
> >
> 
> Not sure I follow we connect Rx queue to an event queue which is then
> linked to multiple event ports which are polled on
> by respective cores.

This is what we too support, but with atomic queue case the scenario gets little complex.
Each atomic queue can be scheduled only to one event port at a time, until all the events from
that event port are processed. Then only it can move to other event port.

To have separate event ports process packets at same time in atomic scenario, multiple queues
are required. As l3fwd supports multiple queues, it seems legitimate to add the support.

Thanks,
Nipun

> How would increasing Rx queues help? Distributing flows from single event
> queue to multiple event ports is the responsibility
> of Event device as per spec.
> Does DPAA/2 function differently?
> 
> Regards,
> Pavan.
> 
> >Regards,
> >Nipun
> >
> >>
> >> >
> >> >Regards,
> >> >Nipun
> >> >
> >>
> >> Regards,
> >> Pavan.

  reply	other threads:[~2020-01-02  8:50 UTC|newest]

Thread overview: 78+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-12-04 14:43 [dpdk-dev] [PATCH v2 00/11] example/l3fwd: introduce event device support pbhagavatula
2019-12-04 14:43 ` [dpdk-dev] [PATCH v2 01/11] examples/l3fwd: add framework for event device pbhagavatula
2020-01-03 12:49   ` Ananyev, Konstantin
2020-01-06  4:27     ` Pavan Nikhilesh Bhagavatula
2020-01-06 12:32       ` Ananyev, Konstantin
2020-01-07 16:34         ` Pavan Nikhilesh Bhagavatula
2019-12-04 14:43 ` [dpdk-dev] [PATCH v2 02/11] examples/l3fwd: split pipelines based on capability pbhagavatula
2019-12-04 14:43 ` [dpdk-dev] [PATCH v2 03/11] examples/l3fwd: add event device configuration pbhagavatula
2019-12-04 14:43 ` [dpdk-dev] [PATCH v2 04/11] examples/l3fwd: add ethdev setup based on eventdev pbhagavatula
2019-12-27 13:33   ` Nipun Gupta
2019-12-29 15:42     ` Pavan Nikhilesh Bhagavatula
2019-12-30  7:40       ` Nipun Gupta
2020-01-02  6:21         ` Pavan Nikhilesh Bhagavatula
2020-01-02  8:49           ` Nipun Gupta [this message]
2020-01-02  9:33             ` Jerin Jacob
2020-01-03  9:06               ` Nipun Gupta
2020-01-03  9:09                 ` Jerin Jacob
2019-12-04 14:43 ` [dpdk-dev] [PATCH v2 05/11] examples/l3fwd: add event port and queue setup pbhagavatula
2019-12-04 14:43 ` [dpdk-dev] [PATCH v2 06/11] examples/l3fwd: add event eth Rx/Tx adapter setup pbhagavatula
2019-12-04 14:43 ` [dpdk-dev] [PATCH v2 07/11] examples/l3fwd: add service core setup based on caps pbhagavatula
2020-01-03 13:07   ` Ananyev, Konstantin
2020-01-06  4:29     ` Pavan Nikhilesh Bhagavatula
2019-12-04 14:43 ` [dpdk-dev] [PATCH v2 08/11] examples/l3fwd: add event lpm main loop pbhagavatula
2020-01-03 13:16   ` Ananyev, Konstantin
2020-01-06  4:43     ` Pavan Nikhilesh Bhagavatula
2019-12-04 14:43 ` [dpdk-dev] [PATCH v2 09/11] examples/l3fwd: add event em " pbhagavatula
2020-01-03 13:45   ` Ananyev, Konstantin
2020-01-06  4:44     ` Pavan Nikhilesh Bhagavatula
2020-01-06 12:27       ` Ananyev, Konstantin
2019-12-04 14:43 ` [dpdk-dev] [PATCH v2 10/11] examples/l3fwd: add graceful teardown for eventdevice pbhagavatula
2020-01-03 13:52   ` Ananyev, Konstantin
2020-01-06  4:50     ` Pavan Nikhilesh Bhagavatula
2020-01-06 12:12       ` Ananyev, Konstantin
2020-01-07 16:28         ` Pavan Nikhilesh Bhagavatula
2019-12-04 14:43 ` [dpdk-dev] [PATCH v2 11/11] doc: update l3fwd user guide to support eventdev pbhagavatula
2019-12-04 15:16 ` [dpdk-dev] [PATCH v2 00/11] example/l3fwd: introduce event device support Jerin Jacob
2020-01-11 13:47 ` [dpdk-dev] [PATCH v3 " pbhagavatula
2020-01-11 13:47   ` [dpdk-dev] [PATCH v3 01/11] examples/l3fwd: add framework for event device pbhagavatula
2020-01-21  8:44     ` Jerin Jacob
2020-01-11 13:47   ` [dpdk-dev] [PATCH v3 02/11] examples/l3fwd: split pipelines based on capability pbhagavatula
2020-01-21  8:46     ` Jerin Jacob
2020-01-11 13:47   ` [dpdk-dev] [PATCH v3 03/11] examples/l3fwd: add event device configuration pbhagavatula
2020-01-21  8:51     ` Jerin Jacob
2020-01-11 13:47   ` [dpdk-dev] [PATCH v3 04/11] examples/l3fwd: add ethdev setup based on eventdev pbhagavatula
2020-01-11 13:47   ` [dpdk-dev] [PATCH v3 05/11] examples/l3fwd: add event port and queue setup pbhagavatula
2020-01-11 13:47   ` [dpdk-dev] [PATCH v3 06/11] examples/l3fwd: add event eth Rx/Tx adapter setup pbhagavatula
2020-01-11 13:47   ` [dpdk-dev] [PATCH v3 07/11] examples/l3fwd: add service core setup based on caps pbhagavatula
2020-01-11 13:47   ` [dpdk-dev] [PATCH v3 08/11] examples/l3fwd: add event lpm main loop pbhagavatula
2020-01-11 13:47   ` [dpdk-dev] [PATCH v3 09/11] examples/l3fwd: add event em " pbhagavatula
2020-01-11 13:47   ` [dpdk-dev] [PATCH v3 10/11] examples/l3fwd: add graceful teardown for eventdevice pbhagavatula
2020-01-11 13:47   ` [dpdk-dev] [PATCH v3 11/11] doc: update l3fwd user guide to support eventdev pbhagavatula
2020-01-13 12:02   ` [dpdk-dev] [PATCH v3 00/11] example/l3fwd: introduce event device support Nipun Gupta
2020-01-22 18:28   ` [dpdk-dev] [PATCH v4 " pbhagavatula
2020-01-22 18:28     ` [dpdk-dev] [PATCH v4 01/11] examples/l3fwd: add framework for event device pbhagavatula
2020-01-22 18:28     ` [dpdk-dev] [PATCH v4 02/11] examples/l3fwd: split pipelines based on capability pbhagavatula
2020-01-22 18:28     ` [dpdk-dev] [PATCH v4 03/11] examples/l3fwd: add event device configuration pbhagavatula
2020-01-22 18:28     ` [dpdk-dev] [PATCH v4 04/11] examples/l3fwd: add ethdev setup based on eventdev pbhagavatula
2020-01-22 18:28     ` [dpdk-dev] [PATCH v4 05/11] examples/l3fwd: add event port and queue setup pbhagavatula
2020-01-22 18:28     ` [dpdk-dev] [PATCH v4 06/11] examples/l3fwd: add event eth Rx/Tx adapter setup pbhagavatula
2020-01-22 18:28     ` [dpdk-dev] [PATCH v4 07/11] examples/l3fwd: add service core setup based on caps pbhagavatula
2020-01-22 18:28     ` [dpdk-dev] [PATCH v4 08/11] examples/l3fwd: add event lpm main loop pbhagavatula
2020-01-22 18:28     ` [dpdk-dev] [PATCH v4 09/11] examples/l3fwd: add event em " pbhagavatula
2020-01-22 18:28     ` [dpdk-dev] [PATCH v4 10/11] examples/l3fwd: add graceful teardown for eventdevice pbhagavatula
2020-01-22 18:28     ` [dpdk-dev] [PATCH v4 11/11] doc: update l3fwd user guide to support eventdev pbhagavatula
2020-01-23  5:25       ` Jerin Jacob
2020-01-24  4:05     ` [dpdk-dev] [PATCH v5 00/11] example/l3fwd: introduce event device support pbhagavatula
2020-01-24  4:05       ` [dpdk-dev] [PATCH v5 01/11] examples/l3fwd: add framework for event device pbhagavatula
2020-01-24  4:05       ` [dpdk-dev] [PATCH v5 02/11] examples/l3fwd: split pipelines based on capability pbhagavatula
2020-01-24  4:05       ` [dpdk-dev] [PATCH v5 03/11] examples/l3fwd: add event device configuration pbhagavatula
2020-01-24  4:05       ` [dpdk-dev] [PATCH v5 04/11] examples/l3fwd: add ethdev setup based on eventdev pbhagavatula
2020-01-24  4:05       ` [dpdk-dev] [PATCH v5 05/11] examples/l3fwd: add event port and queue setup pbhagavatula
2020-01-24  4:05       ` [dpdk-dev] [PATCH v5 06/11] examples/l3fwd: add event eth Rx/Tx adapter setup pbhagavatula
2020-01-24  4:05       ` [dpdk-dev] [PATCH v5 07/11] examples/l3fwd: add service core setup based on caps pbhagavatula
2020-01-24  4:05       ` [dpdk-dev] [PATCH v5 08/11] examples/l3fwd: add event lpm main loop pbhagavatula
2020-01-24  4:05       ` [dpdk-dev] [PATCH v5 09/11] examples/l3fwd: add event em " pbhagavatula
2020-01-24  4:05       ` [dpdk-dev] [PATCH v5 10/11] examples/l3fwd: add graceful teardown for eventdevice pbhagavatula
2020-01-24  4:05       ` [dpdk-dev] [PATCH v5 11/11] doc: update l3fwd user guide to support eventdev pbhagavatula
2020-01-27 16:17       ` [dpdk-dev] [PATCH v5 00/11] example/l3fwd: introduce event device support Jerin Jacob

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