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From: Simei Su <simei.su@intel.com>
To: thomas@monjalon.net, ferruh.yigit@amd.com,
	andrew.rybchenko@oktetlabs.ru, kirill.rybalchenko@intel.com,
	qi.z.zhang@intel.com
Cc: dev@dpdk.org, wenjun1.wu@intel.com, Simei Su <simei.su@intel.com>
Subject: [RFC v2 0/3] add frequency adjustment support for PTP timesync
Date: Mon,  3 Apr 2023 17:22:45 +0800	[thread overview]
Message-ID: <20230403092248.81551-1-simei.su@intel.com> (raw)
In-Reply-To: <20230331022258.382085-1-simei.su@intel.com>

This patchset cover below parts:
(1)Introduce a new timesync API called "rte_eth_timesync_adjust_freq" that
   enables frequency adjustment during PTP timesync. This new API aligns with
   the kernel PTP which already supports frequency adjustment. It brings DPDK
   closer in alignment with the kernel's best practice.

(2)Refine the ptpclient application by applying a PI algorithm that leverages
   the new API to further improve timesync accuracy. These changes doesn't break
   original solution and creates a more accurate solution for DPDK-based high
   accuracy PTP. We have provided significant improvements for timesync accuracy
   on e810 and we believe these improvements will also benefit other devices.

The original command for starting ptpclient is:
./build/examples/dpdk-ptpclient -a 0000:81:00.0 -c 1 -n 3 -- -T 0 -p 0x1

The command with PI algorithm is:
./build/examples/dpdk-ptpclient -a 0000:81:00.0 -c 1 -n 3 -- -T 0 -p 0x1 -- controller=pi

[RFC v2 1/3] ethdev: add frequency adjustment API.
[RFC v2 2/3] examples/ptpclient: refine application.
[RFC v2 3/3] examples/ptpclient: add frequency adjustment support.

v2:
* Remove the ice PMD part from the RFC.
* Add description in cover letter.
* Refine commit log in patch.

Simei Su (3):
  ethdev: add frequency adjustment API
  examples/ptpclient: refine application
  examples/ptpclient: add frequency adjustment support

 examples/ptpclient/ptpclient.c   | 222 +++++++++++++++++++++++++++++++++------
 lib/ethdev/ethdev_driver.h       |   5 +
 lib/ethdev/ethdev_trace.h        |   9 ++
 lib/ethdev/ethdev_trace_points.c |   3 +
 lib/ethdev/rte_ethdev.c          |  18 ++++
 lib/ethdev/rte_ethdev.h          |  19 ++++
 6 files changed, 245 insertions(+), 31 deletions(-)

-- 
2.9.5


  parent reply	other threads:[~2023-04-03  9:24 UTC|newest]

Thread overview: 22+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-03-31  2:22 [RFC 0/4] add frequency adjustment support for PTP Simei Su
2023-03-31  2:22 ` [RFC 1/4] ethdev: add frequency adjustment API Simei Su
2023-03-31  2:22 ` [RFC 2/4] net/ice: add frequency adjustment support for PTP Simei Su
2023-03-31  2:22 ` [RFC 3/4] examples/ptpclient: refine application Simei Su
2023-03-31  2:22 ` [RFC 4/4] examples/ptpclient: add frequency adjustment support Simei Su
2023-04-03  9:22 ` Simei Su [this message]
2023-04-03  9:22   ` [RFC v2 1/3] ethdev: add frequency adjustment API Simei Su
2023-05-15 14:18     ` Thomas Monjalon
2023-05-24  9:25       ` Su, Simei
2023-04-03  9:22   ` [RFC v2 2/3] examples/ptpclient: refine application Simei Su
2023-04-03  9:22   ` [RFC v2 3/3] examples/ptpclient: add frequency adjustment support Simei Su
2023-05-22 13:23   ` [RFC v3 0/3] add frequency adjustment support for PTP timesync Simei Su
2023-05-22 13:23     ` [RFC v3 1/3] ethdev: add frequency adjustment API Simei Su
2023-05-22 13:23     ` [RFC v3 2/3] examples/ptpclient: refine application Simei Su
2023-06-02 19:45       ` Ferruh Yigit
2023-05-22 13:23     ` [RFC v3 3/3] examples/ptpclient: add frequency adjustment support Simei Su
2023-06-02 19:52       ` Ferruh Yigit
2023-06-07 10:04         ` Su, Simei
2023-06-02 19:44     ` [RFC v3 0/3] add frequency adjustment support for PTP timesync Ferruh Yigit
2023-06-07  8:19       ` Su, Simei
2023-06-07 18:29         ` Ferruh Yigit
2023-06-08  4:05           ` Su, Simei

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