From: Hanumanth Reddy Pothula <hpothula@marvell.com>
To: Ferruh Yigit <ferruh.yigit@amd.com>,
Aman Singh <aman.deep.singh@intel.com>,
Yuying Zhang <yuying.zhang@intel.com>,
Ivan Malov <ivan.malov@oktetlabs.ru>,
Andrew Rybchenko <andrew.rybchenko@oktetlabs.ru>
Cc: "dev@dpdk.org" <dev@dpdk.org>,
"andrew.rybchenko@oktetlabs.ru" <andrew.rybchenko@oktetlabs.ru>,
"viacheslavo@nvidia.com" <viacheslavo@nvidia.com>,
Jerin Jacob Kollanukkaran <jerinj@marvell.com>,
Nithin Kumar Dabilpuram <ndabilpuram@marvell.com>
Subject: RE: [EXT] Re: [PATCH v5 2/2] app/testpmd: add command to process Rx metadata negotiation
Date: Wed, 25 Jan 2023 09:30:13 +0000 [thread overview]
Message-ID: <PH0PR18MB47507AAB867DF2197B7DC055CBCE9@PH0PR18MB4750.namprd18.prod.outlook.com> (raw)
In-Reply-To: <11fa3448-7348-09d6-b7e0-321aef1d8953@amd.com>
++ Ivan Malov and Andrew Rybchenko
> -----Original Message-----
> From: Ferruh Yigit <ferruh.yigit@amd.com>
> Sent: Tuesday, January 24, 2023 11:34 PM
> To: Hanumanth Reddy Pothula <hpothula@marvell.com>; Aman Singh
> <aman.deep.singh@intel.com>; Yuying Zhang <yuying.zhang@intel.com>
> Cc: dev@dpdk.org; andrew.rybchenko@oktetlabs.ru;
> viacheslavo@nvidia.com; Jerin Jacob Kollanukkaran <jerinj@marvell.com>;
> Nithin Kumar Dabilpuram <ndabilpuram@marvell.com>
> Subject: [EXT] Re: [PATCH v5 2/2] app/testpmd: add command to process
> Rx metadata negotiation
>
> External Email
>
> ----------------------------------------------------------------------
> On 12/21/2022 2:07 AM, Hanumanth Pothula wrote:
> > Presently, Rx metadata is sent to PMD by default, leading to a
> > performance drop as processing for the same in Rx path takes extra
> > cycles.
> >
> > Hence, add new testpmd command,
> > 'enable port <port_id> nic_to_pmd_rx_metadata'
> >
> > This command helps in sending Rx metadata to PMD and thereby Rx
> > metadata flow command requests are processed.
> >
> > Signed-off-by: Hanumanth Pothula <hpothula@marvell.com>
>
> Hi Hanumanth,
>
> I agree with Thomas for the patch.
>
> 'eth_rx_metadata_negotiate_mp()' requests all Rx metadata offloads to be
> enabled, but at this stage if there is no flow rule for Rx metadata why it is
> consuming extra cycles?
>
> Can you update driver code to process Rx metadata when it is enabled by
> application (via 'rte_eth_rx_metadata_negotiate()') AND there is at least
> one flow rule for it?
#1 What is the purpose of rte_eth_rx_metadata_negotiate() API if it is always called by testpmd.
We thought it was added so that when that metadata is not needed, application need not call this
thereby saving cycles/bandwidth.
#2 We use this API similar to Rx/Tx offload flags so that we can set things up before device is
configured. We thought that is the purpose of having this negotiate API and avoid depleting offload flags.
#3 Generally any new offloads added to DPDK would be in disabled state in testpmd and we would have
an option to enable it. In this case, testpmd is by default calling this negotiation.
We can update the driver if the purpose of this API is clear.
next prev parent reply other threads:[~2023-01-25 9:30 UTC|newest]
Thread overview: 73+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-08-01 4:41 [PATCH] app/testpmd: add command line argument 'rx-metadata' Hanumanth Pothula
2022-08-01 13:11 ` Hanumanth Pothula
2022-08-01 13:13 ` Hanumanth Pothula
2022-08-01 19:41 ` Ivan Malov
2022-08-02 16:45 ` [PATCH] app/testpmd: add command line argument 'nic-to-pmd-rx-metadata' Hanumanth Pothula
2022-08-02 16:45 ` [PATCH v2 1/2] version: 22.11-rc0 Hanumanth Pothula
2022-08-02 16:45 ` [PATCH v2 2/2] app/testpmd: add command line argument 'nic-to-pmd-rx-metadata' Hanumanth Pothula
2022-08-02 17:51 ` [PATCH v2 1/1] " Hanumanth Pothula
2022-08-30 12:36 ` Hanumanth Reddy Pothula
2022-09-01 8:03 ` Singh, Aman Deep
2022-10-04 14:48 ` Andrew Rybchenko
2022-10-06 18:35 ` [PATCH v3 1/1] app/testpmd: control passing Rx metadata to PMD Hanumanth Pothula
2022-10-17 8:32 ` Andrew Rybchenko
2022-10-27 7:34 ` Thomas Monjalon
2022-10-27 12:54 ` Thomas Monjalon
2022-12-02 16:14 ` [EXT] " Hanumanth Reddy Pothula
2022-12-02 19:41 ` Thomas Monjalon
2022-12-05 7:59 ` Hanumanth Reddy Pothula
2022-12-05 8:28 ` Thomas Monjalon
2022-12-05 9:43 ` Slava Ovsiienko
2022-12-20 20:02 ` [PATCH v4 1/2] ethdev: control Rx metadata negotiation Hanumanth Pothula
2022-12-20 20:02 ` [PATCH v4 2/2] app/testpmd: add command to process " Hanumanth Pothula
2022-12-20 21:23 ` Stephen Hemminger
2022-12-21 2:07 ` [PATCH v5 1/2] ethdev: fix ethdev configuration state on reset Hanumanth Pothula
2022-12-21 2:07 ` [PATCH v5 2/2] app/testpmd: add command to process Rx metadata negotiation Hanumanth Pothula
2023-01-18 10:32 ` Thomas Monjalon
2023-01-19 10:33 ` [EXT] " Hanumanth Reddy Pothula
2023-01-25 12:51 ` Thomas Monjalon
2023-01-24 18:04 ` Ferruh Yigit
2023-01-25 9:30 ` Hanumanth Reddy Pothula [this message]
2023-01-25 12:55 ` [EXT] " Thomas Monjalon
2023-01-25 13:55 ` Ferruh Yigit
2023-01-25 13:59 ` Thomas Monjalon
2023-01-25 14:42 ` Nithin Kumar Dabilpuram
2023-01-26 11:03 ` Thomas Monjalon
2023-01-27 5:02 ` Nithin Kumar Dabilpuram
2023-01-27 8:54 ` Thomas Monjalon
2023-01-27 10:42 ` Nithin Kumar Dabilpuram
2023-01-27 15:01 ` Thomas Monjalon
2023-01-31 16:17 ` Jerin Jacob
2023-01-31 23:03 ` Thomas Monjalon
2023-02-01 6:10 ` Ivan Malov
2023-02-01 7:16 ` Andrew Rybchenko
2023-02-01 8:53 ` Jerin Jacob
2023-02-01 9:00 ` Ori Kam
2023-02-01 9:05 ` Thomas Monjalon
2023-02-01 9:07 ` Andrew Rybchenko
2023-02-01 9:14 ` Jerin Jacob
2023-02-01 9:29 ` Andrew Rybchenko
2023-02-01 10:48 ` Jerin Jacob
2023-02-01 10:58 ` Andrew Rybchenko
2023-02-01 11:04 ` Thomas Monjalon
2023-02-01 11:15 ` Jerin Jacob
2023-02-01 11:35 ` Ferruh Yigit
2023-02-01 13:48 ` Jerin Jacob
2023-02-01 14:50 ` Ferruh Yigit
2023-02-01 15:22 ` Jerin Jacob
2023-02-02 8:43 ` Ferruh Yigit
2023-02-02 8:50 ` Ivan Malov
2023-02-02 9:17 ` Ferruh Yigit
2023-02-02 10:41 ` Ivan Malov
2023-02-02 10:48 ` Ivan Malov
2023-02-02 11:41 ` Thomas Monjalon
2023-02-02 11:55 ` Ivan Malov
2023-02-02 12:03 ` Thomas Monjalon
2023-02-02 12:21 ` Andrew Rybchenko
2023-02-01 11:20 ` Ivan Malov
2023-01-25 13:17 ` Ferruh Yigit
2023-01-25 13:21 ` Ferruh Yigit
2023-01-25 13:21 ` Ferruh Yigit
2023-01-16 10:43 ` [PATCH v5 1/2] ethdev: fix ethdev configuration state on reset Hanumanth Reddy Pothula
2023-01-18 10:29 ` Thomas Monjalon
2023-01-24 18:14 ` Ferruh Yigit
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