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 16D6C489C4; Fri, 24 Oct 2025 13:53:30 +0200 (CEST) Received: from mails.dpdk.org (localhost [127.0.0.1]) by mails.dpdk.org (Postfix) with ESMTP id 05F9E4068A; Fri, 24 Oct 2025 13:53:11 +0200 (CEST) Received: from mgamail.intel.com (mgamail.intel.com [192.198.163.17]) by mails.dpdk.org (Postfix) with ESMTP id EC5664060F for ; Fri, 24 Oct 2025 13:53:08 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1761306789; x=1792842789; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=3qsKTNEQInhDJTeZSoJEWrY7laHt0PDoQGLK9RJjVWA=; b=lNPKa8LbCGCzzpZUcYWegyjwmfQ9PjNnnPHyWW5YZQTTSkqV1BsbKdBd N1iGvLhe2zk3fKjarC8WCSDfKnflh1LBZLUelpYOG594YUFHhQYQZ7TF3 Fbt+1F+JJPTNJdphv4I0SFG7o9UAsqsi1QCwyLLgyv+2xEYIOMikHs9VZ JpQZ6KEMiNrENOE7iV9NrDQYcodbHc+pq3X9g+1KbOSsD/gaEJ0ai5iJN XFY1dDlWAuViQkPo5OZuB3fB4/AyRK9y4Djz1jcV6LDvUCGRWcAKFIzml AtpNXcM7WVSyVRv/MN8aFROGGXVgv2qedahNECe1gGlSjuToKYgfwEPZ9 Q==; X-CSE-ConnectionGUID: ltJQ3ZrtQn+YGK++On7QwQ== X-CSE-MsgGUID: pYFRT5wOShWPTjRfRsZ3Wg== X-IronPort-AV: E=McAfee;i="6800,10657,11586"; a="63394273" X-IronPort-AV: E=Sophos;i="6.19,252,1754982000"; d="scan'208";a="63394273" Received: from orviesa004.jf.intel.com ([10.64.159.144]) by fmvoesa111.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 24 Oct 2025 04:53:08 -0700 X-CSE-ConnectionGUID: Np+vmt+4R1G4Z0wAHuatTA== X-CSE-MsgGUID: sO0vO/G5R/2/PcmvU0+wHQ== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.19,252,1754982000"; d="scan'208";a="188709805" Received: from npg-npf-wlpr-srv12.iind.intel.com ([10.190.212.197]) by orviesa004.jf.intel.com with ESMTP; 24 Oct 2025 04:53:07 -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 v1 4/4] doc: add PTP IDPF documentation Date: Fri, 24 Oct 2025 17:38:40 +0530 Message-Id: <20251024120840.420016-5-soumyadeep.hore@intel.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20251024120840.420016-1-soumyadeep.hore@intel.com> References: <20251024120840.420016-1-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 -- 2.34.1