From patchwork Thu Sep 10 10:16:50 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Yangbo Lu X-Patchwork-Id: 1361429 Return-Path: X-Original-To: patchwork-incoming-netdev@ozlabs.org Delivered-To: patchwork-incoming-netdev@ozlabs.org Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org (client-ip=23.128.96.18; helo=vger.kernel.org; envelope-from=netdev-owner@vger.kernel.org; receiver=) Authentication-Results: ozlabs.org; dmarc=fail (p=none dis=none) header.from=nxp.com Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by ozlabs.org (Postfix) with ESMTP id 4BnFR11Hh4z9sTd for ; Thu, 10 Sep 2020 20:26:05 +1000 (AEST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730719AbgIJK0A (ORCPT ); Thu, 10 Sep 2020 06:26:00 -0400 Received: from inva021.nxp.com ([92.121.34.21]:52598 "EHLO inva021.nxp.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725971AbgIJKZF (ORCPT ); Thu, 10 Sep 2020 06:25:05 -0400 Received: from inva021.nxp.com (localhost [127.0.0.1]) by inva021.eu-rdc02.nxp.com (Postfix) with ESMTP id 49B4A2005CA; Thu, 10 Sep 2020 12:24:57 +0200 (CEST) Received: from invc005.ap-rdc01.nxp.com (invc005.ap-rdc01.nxp.com [165.114.16.14]) by inva021.eu-rdc02.nxp.com (Postfix) with ESMTP id 3873D200774; Thu, 10 Sep 2020 12:24:54 +0200 (CEST) Received: from localhost.localdomain (mega.ap.freescale.net [10.192.208.232]) by invc005.ap-rdc01.nxp.com (Postfix) with ESMTP id 1620F402C1; Thu, 10 Sep 2020 12:24:50 +0200 (CEST) From: Yangbo Lu To: netdev@vger.kernel.org Cc: Yangbo Lu , "David S . Miller" , Jakub Kicinski , Ioana Ciornei , Ioana Radulescu , Richard Cochran Subject: [v2, 0/5] dpaa2_eth: support 1588 one-step timestamping Date: Thu, 10 Sep 2020 18:16:50 +0800 Message-Id: <20200910101655.13904-1-yangbo.lu@nxp.com> X-Mailer: git-send-email 2.17.1 X-Virus-Scanned: ClamAV using ClamSMTP Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org This patch-set is to add MC APIs of 1588 one-step timestamping, and support one-step timestamping for PTP Sync packet on DPAA2. Before egress, one-step timestamping enablement needs, - Enabling timestamp and FAS (Frame Annotation Status) in dpni buffer layout. - Write timestamp to frame annotation and set PTP bit in FAS to mark as one-step timestamping event. - Enabling one-step timestamping by dpni_set_single_step_cfg() API, with offset provided to insert correction time on frame. The offset must respect all MAC headers, VLAN tags and other protocol headers accordingly. The correction field update can consider delays up to one second. So PTP frame needs to be filtered and parsed, and written timestamp into Sync frame originTimestamp field. The operation of API dpni_set_single_step_cfg() has to be done when no one-step timestamping frames are in flight. So we have to make sure the last one-step timestamping frame has already been transmitted on hardware before starting to send the current one. The resolution is, - Utilize skb->cb[0] to mark timestamping request per packet. If it is one-step timestamping PTP sync packet, queue to skb queue. If not, transmit immediately. - Schedule a work to transmit skbs in skb queue. - mutex lock is used to ensure the last one-step timestamping packet has already been transmitted on hardware through TX confirmation queue before transmitting current packet. Change for v2: - Removed unused variable priv in dpaa2_eth_xdp_create_fd(). Yangbo Lu (5): dpaa2-eth: add APIs of 1588 single step timestamping dpaa2-eth: define a global ptp_qoriq structure pointer dpaa2-eth: invoke dpaa2_eth_enable_tx_tstamp() once in code dpaa2-eth: utilize skb->cb[0] for hardware timestamping dpaa2-eth: support PTP Sync packet one-step timestamping drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.c | 247 ++++++++++++++++++--- drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.h | 43 +++- .../net/ethernet/freescale/dpaa2/dpaa2-ethtool.c | 4 +- drivers/net/ethernet/freescale/dpaa2/dpaa2-ptp.c | 3 +- drivers/net/ethernet/freescale/dpaa2/dpaa2-ptp.h | 4 + drivers/net/ethernet/freescale/dpaa2/dpni-cmd.h | 21 ++ drivers/net/ethernet/freescale/dpaa2/dpni.c | 73 ++++++ drivers/net/ethernet/freescale/dpaa2/dpni.h | 31 +++ 8 files changed, 389 insertions(+), 37 deletions(-)