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From: "Varghese, Vipin" <vipin.varghese@intel.com>
To: Pavan Nikhilesh Bhagavatula <pbhagavatula@marvell.com>,
	"Jerin Jacob Kollanukkaran" <jerinj@marvell.com>,
	"Richardson, Bruce" <bruce.richardson@intel.com>,
	"hemant.agrawal@nxp.com" <hemant.agrawal@nxp.com>
Cc: "dev@dpdk.org" <dev@dpdk.org>
Subject: Re: [dpdk-dev] [PATCH v6 00/10] example/l2fwd-event: introduce	l2fwd-event example
Date: Tue, 22 Oct 2019 02:57:08 +0000	[thread overview]
Message-ID: <4C9E0AB70F954A408CC4ADDBF0F8FA7D4D3DE2D0@BGSMSX101.gar.corp.intel.com> (raw)
In-Reply-To: <CY4PR1801MB18630D832CA934A1C60F1C39DE690@CY4PR1801MB1863.namprd18.prod.outlook.com>

Hi Pavan,

snipped
> >>
> >> Based on event device capability the configuration is done as follows:
> >>     - A single event device is enabled.
> >>     - The number of event ports is equal to the number of worker
> >>       cores enabled in the core mask. Additional event ports might
> >>       be configured based on Rx/Tx adapter capability.
> >>     - The number of event queues is equal to the number of ethernet
> >>       ports. If Tx adapter doesn't have internal port capability then
> >>       an additional single link event queue is used to enqueue events
> >>       to Tx adapter.
> >1. Are we support per port function as 'mac_updating' and
> >'non_macupdating'?
> No, its global.
Thanks for confirming, so all ports behaviour are affected by this flag.

> 
> >2. If no for above, why is that each port should have ` number of event
> >queues is equal to the number of ethernet`?
> 
> It's not a quantifier of each port, It across the eventdevice that the number of
> event queues is equal to number of ethdevices used.
> 
> This is to prevent event queues being overcrowded i.e. in case there is only one
> event queue and multiple Eth devices then SW/HW will have a bottleneck in
> enqueueing all the mbufs to a single event queue.
Yes you are correct, but here is my confusion 

1. let us assume there are 2 ports, ie: port 0 <==> port 1.
2. We have 4 workers and 2 event queue (2 ports, so Q-0 for port-0 and Q-11 for port-1)
3. The event mode (SW or HW) is parallel.
4. In this case we need to rely of Q-2 which can absorb the events for single-event TX adapter for L2FWD_EVENT_TX_ENQ.
5. But for L2FWD_EVENT_TX_DIRECT (which is to send packets out directly) this is not right form as multiple parallel workers may concurrently send out same destination port queue (as there is 1 TX configured).

Can you help me understand, how this is worked around?

> 
> >3. With this work for vdev ports, if no are we adding check for the
> >same in `main` function?
> 
> I have verified the functionality for --vdev=event_sw0 and it seems to work fine.
Thanks, so whether it is physical or virtual ethernet device all packets has to come to worker cores for 'no-mac-updating'.

> 
> >
> >snipped


  reply	other threads:[~2019-10-22  2:57 UTC|newest]

Thread overview: 107+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-09-19  9:25 [dpdk-dev] [PATCH v2 " pbhagavatula
2019-09-19  9:25 ` [dpdk-dev] [PATCH v2 01/10] examples/l2fwd-event: add default poll mode routines pbhagavatula
2019-09-19  9:43   ` Sunil Kumar Kori
2019-09-19 10:13   ` [dpdk-dev] [PATCH v3 00/10] example/l2fwd-event: introduce l2fwd-event example pbhagavatula
2019-09-19 10:13     ` [dpdk-dev] [PATCH v3 01/10] examples/l2fwd-event: add default poll mode routines pbhagavatula
2019-09-19 10:13     ` [dpdk-dev] [PATCH v3 02/10] examples/l2fwd-event: add infra for eventdev pbhagavatula
2019-09-19 10:13     ` [dpdk-dev] [PATCH v3 03/10] examples/l2fwd-event: add infra to split eventdev framework pbhagavatula
2019-09-19 10:13     ` [dpdk-dev] [PATCH v3 04/10] examples/l2fwd-event: add eth port setup for eventdev pbhagavatula
2019-09-19 10:13     ` [dpdk-dev] [PATCH v3 05/10] examples/l2fwd-event: add eventdev queue and port setup pbhagavatula
2019-09-19 10:35       ` Sunil Kumar Kori
2019-09-19 10:13     ` [dpdk-dev] [PATCH v3 06/10] examples/l2fwd-event: add event Rx/Tx adapter setup pbhagavatula
2019-09-19 10:13     ` [dpdk-dev] [PATCH v3 07/10] examples/l2fwd-event: add service core setup pbhagavatula
2019-09-19 10:13     ` [dpdk-dev] [PATCH v3 08/10] examples/l2fwd-event: add eventdev main loop pbhagavatula
2019-09-19 10:13     ` [dpdk-dev] [PATCH v3 09/10] examples/l2fwd-event: add graceful teardown pbhagavatula
2019-09-19 10:13     ` [dpdk-dev] [PATCH v3 10/10] doc: add application usage guide for l2fwd-event pbhagavatula
2019-09-24  9:41     ` [dpdk-dev] [PATCH v4 00/10] example/l2fwd-event: introduce l2fwd-event example pbhagavatula
2019-09-24  9:42       ` [dpdk-dev] [PATCH v4 01/10] examples/l2fwd-event: add default poll mode routines pbhagavatula
2019-09-26 17:28         ` Jerin Jacob
2019-09-24  9:42       ` [dpdk-dev] [PATCH v4 02/10] examples/l2fwd-event: add infra for eventdev pbhagavatula
2019-09-26 17:33         ` Jerin Jacob
2019-09-27 13:08         ` Nipun Gupta
2019-09-24  9:42       ` [dpdk-dev] [PATCH v4 03/10] examples/l2fwd-event: add infra to split eventdev framework pbhagavatula
2019-09-24  9:42       ` [dpdk-dev] [PATCH v4 04/10] examples/l2fwd-event: add eth port setup for eventdev pbhagavatula
2019-09-27 13:15         ` Nipun Gupta
2019-09-27 14:45           ` Pavan Nikhilesh Bhagavatula
2019-09-24  9:42       ` [dpdk-dev] [PATCH v4 05/10] examples/l2fwd-event: add eventdev queue and port setup pbhagavatula
2019-09-27 13:22         ` Nipun Gupta
2019-09-27 14:43           ` Pavan Nikhilesh Bhagavatula
2019-09-24  9:42       ` [dpdk-dev] [PATCH v4 06/10] examples/l2fwd-event: add event Rx/Tx adapter setup pbhagavatula
2019-09-24  9:42       ` [dpdk-dev] [PATCH v4 07/10] examples/l2fwd-event: add service core setup pbhagavatula
2019-09-24  9:42       ` [dpdk-dev] [PATCH v4 08/10] examples/l2fwd-event: add eventdev main loop pbhagavatula
2019-09-27 13:28         ` Nipun Gupta
2019-09-27 14:35           ` Pavan Nikhilesh Bhagavatula
2019-09-30  5:38             ` Nipun Gupta
2019-09-30  6:38               ` Jerin Jacob
2019-09-30  7:46                 ` Nipun Gupta
2019-09-30  8:09                   ` Pavan Nikhilesh Bhagavatula
2019-09-30 17:50                     ` Nipun Gupta
2019-10-01  5:59                       ` Pavan Nikhilesh Bhagavatula
2019-09-24  9:42       ` [dpdk-dev] [PATCH v4 09/10] examples/l2fwd-event: add graceful teardown pbhagavatula
2019-09-24  9:42       ` [dpdk-dev] [PATCH v4 10/10] doc: add application usage guide for l2fwd-event pbhagavatula
2019-09-26 17:42         ` Jerin Jacob
2019-10-02 20:57       ` [dpdk-dev] [PATCH v5 00/10] example/l2fwd-event: introduce l2fwd-event example pbhagavatula
2019-10-02 20:57         ` [dpdk-dev] [PATCH v5 01/10] examples/l2fwd-event: add default poll mode routines pbhagavatula
2019-10-11 14:41           ` Jerin Jacob
2019-10-02 20:57         ` [dpdk-dev] [PATCH v5 02/10] examples/l2fwd-event: add infra for eventdev pbhagavatula
2019-10-04 12:30           ` Nipun Gupta
2019-10-02 20:57         ` [dpdk-dev] [PATCH v5 03/10] examples/l2fwd-event: add infra to split eventdev framework pbhagavatula
2019-10-02 20:57         ` [dpdk-dev] [PATCH v5 04/10] examples/l2fwd-event: add event device setup pbhagavatula
2019-10-02 20:57         ` [dpdk-dev] [PATCH v5 05/10] examples/l2fwd-event: add eventdev queue and port setup pbhagavatula
2019-10-02 20:57         ` [dpdk-dev] [PATCH v5 06/10] examples/l2fwd-event: add event Rx/Tx adapter setup pbhagavatula
2019-10-02 20:57         ` [dpdk-dev] [PATCH v5 07/10] examples/l2fwd-event: add service core setup pbhagavatula
2019-10-02 20:57         ` [dpdk-dev] [PATCH v5 08/10] examples/l2fwd-event: add eventdev main loop pbhagavatula
2019-10-11 14:52           ` Jerin Jacob
2019-10-02 20:57         ` [dpdk-dev] [PATCH v5 09/10] examples/l2fwd-event: add graceful teardown pbhagavatula
2019-10-02 20:57         ` [dpdk-dev] [PATCH v5 10/10] doc: add application usage guide for l2fwd-event pbhagavatula
2019-10-11 14:11           ` Jerin Jacob
2019-10-03 10:33         ` [dpdk-dev] [PATCH v5 00/10] example/l2fwd-event: introduce l2fwd-event example Jerin Jacob
2019-10-03 12:40           ` Hemant Agrawal
2019-10-03 12:47             ` Jerin Jacob
2019-10-09  7:50         ` Nipun Gupta
2019-10-14 18:22         ` [dpdk-dev] [PATCH v6 " pbhagavatula
2019-10-14 18:22           ` [dpdk-dev] [PATCH v6 01/10] examples/l2fwd-event: add default poll mode routines pbhagavatula
2019-10-16 19:07             ` Stephen Hemminger
2019-10-21  3:29             ` Varghese, Vipin
2019-10-14 18:22           ` [dpdk-dev] [PATCH v6 02/10] examples/l2fwd-event: add infra for eventdev pbhagavatula
2019-10-14 18:22           ` [dpdk-dev] [PATCH v6 03/10] examples/l2fwd-event: add infra to split eventdev framework pbhagavatula
2019-10-14 18:22           ` [dpdk-dev] [PATCH v6 04/10] examples/l2fwd-event: add event device setup pbhagavatula
2019-10-14 18:22           ` [dpdk-dev] [PATCH v6 05/10] examples/l2fwd-event: add eventdev queue and port setup pbhagavatula
2019-10-14 18:22           ` [dpdk-dev] [PATCH v6 06/10] examples/l2fwd-event: add event Rx/Tx adapter setup pbhagavatula
2019-10-14 18:22           ` [dpdk-dev] [PATCH v6 07/10] examples/l2fwd-event: add service core setup pbhagavatula
2019-10-14 18:22           ` [dpdk-dev] [PATCH v6 08/10] examples/l2fwd-event: add eventdev main loop pbhagavatula
2019-10-21  3:19             ` Varghese, Vipin
2019-10-21 16:53               ` Pavan Nikhilesh Bhagavatula
2019-10-22  3:13                 ` Varghese, Vipin
2019-10-22 17:02                   ` Pavan Nikhilesh Bhagavatula
2019-10-14 18:22           ` [dpdk-dev] [PATCH v6 09/10] examples/l2fwd-event: add graceful teardown pbhagavatula
2019-10-21  3:12             ` Varghese, Vipin
2019-10-21 16:56               ` Pavan Nikhilesh Bhagavatula
2019-10-22  2:48                 ` Varghese, Vipin
2019-10-14 18:22           ` [dpdk-dev] [PATCH v6 10/10] doc: add application usage guide for l2fwd-event pbhagavatula
2019-10-16 12:38           ` [dpdk-dev] [PATCH v6 00/10] example/l2fwd-event: introduce l2fwd-event example Jerin Jacob
2019-10-21  3:25           ` Varghese, Vipin
2019-10-21 17:02             ` Pavan Nikhilesh Bhagavatula
2019-10-22  2:57               ` Varghese, Vipin [this message]
2019-10-22 15:55                 ` Pavan Nikhilesh Bhagavatula
2019-10-26 11:10           ` [dpdk-dev] [PATCH v7 " pbhagavatula
2019-10-26 11:10             ` [dpdk-dev] [PATCH v7 01/10] examples/l2fwd-event: add default poll mode routines pbhagavatula
2019-10-26 11:10             ` [dpdk-dev] [PATCH v7 02/10] examples/l2fwd-event: add infra for eventdev pbhagavatula
2019-10-26 11:10             ` [dpdk-dev] [PATCH v7 03/10] examples/l2fwd-event: add infra to split eventdev framework pbhagavatula
2019-10-26 11:10             ` [dpdk-dev] [PATCH v7 04/10] examples/l2fwd-event: add event device setup pbhagavatula
2019-10-26 11:10             ` [dpdk-dev] [PATCH v7 05/10] examples/l2fwd-event: add eventdev queue and port setup pbhagavatula
2019-10-26 11:10             ` [dpdk-dev] [PATCH v7 06/10] examples/l2fwd-event: add event Rx/Tx adapter setup pbhagavatula
2019-10-26 11:10             ` [dpdk-dev] [PATCH v7 07/10] examples/l2fwd-event: add service core setup pbhagavatula
2019-10-26 11:10             ` [dpdk-dev] [PATCH v7 08/10] examples/l2fwd-event: add eventdev main loop pbhagavatula
2019-10-26 11:10             ` [dpdk-dev] [PATCH v7 09/10] examples/l2fwd-event: add graceful teardown pbhagavatula
2019-10-26 11:10             ` [dpdk-dev] [PATCH v7 10/10] doc: add application usage guide for l2fwd-event pbhagavatula
2019-10-30 13:19               ` Jerin Jacob
2019-10-30 12:58             ` [dpdk-dev] [PATCH v7 00/10] example/l2fwd-event: introduce l2fwd-event example Jerin Jacob
2019-09-19  9:25 ` [dpdk-dev] [PATCH v2 02/10] examples/l2fwd-event: add infra for eventdev pbhagavatula
2019-09-19  9:25 ` [dpdk-dev] [PATCH v2 03/10] examples/l2fwd-event: add infra to split eventdev framework pbhagavatula
2019-09-19  9:25 ` [dpdk-dev] [PATCH v2 04/10] examples/l2fwd-event: add eth port setup for eventdev pbhagavatula
2019-09-19  9:25 ` [dpdk-dev] [PATCH v2 05/10] examples/l2fwd-event: add eventdev queue and port setup pbhagavatula
2019-09-19  9:26 ` [dpdk-dev] [PATCH v2 06/10] examples/l2fwd-event: add event Rx/Tx adapter setup pbhagavatula
2019-09-19  9:26 ` [dpdk-dev] [PATCH v2 07/10] examples/l2fwd-event: add service core setup pbhagavatula
2019-09-19  9:26 ` [dpdk-dev] [PATCH v2 08/10] examples/l2fwd-event: add eventdev main loop pbhagavatula
2019-09-19  9:26 ` [dpdk-dev] [PATCH v2 09/10] examples/l2fwd-event: add graceful teardown pbhagavatula

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