From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mails.dpdk.org (mails.dpdk.org [217.70.189.124]) by inbox.dpdk.org (Postfix) with ESMTP id 8E394489EF; Mon, 27 Oct 2025 18:27:59 +0100 (CET) Received: from mails.dpdk.org (localhost [127.0.0.1]) by mails.dpdk.org (Postfix) with ESMTP id 3F9C3409FA; Mon, 27 Oct 2025 18:27:46 +0100 (CET) Received: from mgamail.intel.com (mgamail.intel.com [192.198.163.9]) by mails.dpdk.org (Postfix) with ESMTP id 9A16E4067D for ; Mon, 27 Oct 2025 18:27:43 +0100 (CET) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1761586064; x=1793122064; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=fuY/st23pf4MSqLypCS2/ADsw2zq/cD8bCchVSc2WwE=; b=N68tIE+Gz96gv1COYCUNnILGha/x2qwwGx1dv81ISvHgjtihJ333INWF u/0iLp43LLfFhLX+PUrWNqL4XluBiVc6SQOJ30ZQ1OuclGeG9omNfmq5K BFCOtUocmD6AQxFHdaKb464omd4QPpE/wuNGwlbMH1jlIgxwcN/Sc2E9a diJ4jlngNPiZBSK5rIpPruPKdbphhUAGZNRYGPZ3/K3zLDbqRDjWz/utv trk/GjmTpmG0Q4vsZcN51uRck1KJpYCEBuJAt9uF4OSiTeRZp8/OljP/w iuRUos0UWG307Bzfw0ScqUpy/cXFj95xXDmu837YZbNHMuDxmLOHud39a w==; X-CSE-ConnectionGUID: I7uRFEPOQF6mfSxN6Md9vw== X-CSE-MsgGUID: 5YVmQB2JTceM58r7U9G1ww== X-IronPort-AV: E=McAfee;i="6800,10657,11586"; a="74350897" X-IronPort-AV: E=Sophos;i="6.19,259,1754982000"; d="scan'208";a="74350897" Received: from orviesa003.jf.intel.com ([10.64.159.143]) by fmvoesa103.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 27 Oct 2025 10:27:43 -0700 X-CSE-ConnectionGUID: 0z/NO+fwR6iBOWTawq+7Ow== X-CSE-MsgGUID: sgPJ03W0Q5u0SYwmIaneZw== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.19,259,1754982000"; d="scan'208";a="189140765" Received: from fenlix-mobl.ccr.corp.intel.com ([10.239.252.5]) by orviesa003.jf.intel.com with ESMTP; 27 Oct 2025 10:27:42 -0700 From: Soumyadeep Hore To: dev@dpdk.org, bruce.richardson@intel.com Cc: rajesh3.kumar@intel.com, aman.deep.singh@intel.com, manoj.kumar.subbarao@intel.com Subject: [PATCH v2 4/4] doc: add PTP IDPF documentation Date: Tue, 28 Oct 2025 02:07:58 -0400 Message-ID: <20251028060758.233929-5-soumyadeep.hore@intel.com> X-Mailer: git-send-email 2.47.1 In-Reply-To: <20251028060758.233929-1-soumyadeep.hore@intel.com> References: <20251024120840.420016-5-soumyadeep.hore@intel.com> <20251028060758.233929-1-soumyadeep.hore@intel.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org Updated the IDPF Documentation with PTP feature. Signed-off-by: Soumyadeep Hore --- doc/guides/nics/idpf.rst | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) diff --git a/doc/guides/nics/idpf.rst b/doc/guides/nics/idpf.rst index b99cc18188..e76632904b 100644 --- a/doc/guides/nics/idpf.rst +++ b/doc/guides/nics/idpf.rst @@ -109,3 +109,19 @@ The paths are chosen based on 2 conditions: A value "P" means the offload feature is not supported by vector path. If any not supported features are used, idpf vector PMD is disabled and the scalar paths are chosen. + +Time Synchronisation +~~~~~~~~~~~~~~~~~~~~ + +The system operator can run a PTP (Precision Time Protocol) client application +to synchronise the time on the network card in ACC +(and optionally the time on the system) to the PTP master. + +IDPF PMD supports PTP client applications that use the DPDK IEEE 1588 API +to communicate with the PTP master clock. +Note that PTP client application needs to run on PF in ACC +and add the ``--force-max-simd-bitwidth=64`` startup parameter to disable vector mode. + +.. code-block:: console + + examples/dpdk-ptpclient -l 0-3 -n 3 -a 0000:ec:00.1 --force-max-simd-bitwidth=64 -- -T 1 -p 0x1 -c 1 -- 2.47.1