netdev - [net-next, v2, 0/2] enetc: support PTP Sync packet one-step timestamping

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Message-Id: <20210408111350.3817-1-yangbo.lu@nxp.com>
Date:   Thu,  8 Apr 2021 19:13:48 +0800
From:   Yangbo Lu <yangbo.lu@....com>
To:     netdev@...r.kernel.org
Cc:     Yangbo Lu <yangbo.lu@....com>,
        "David S . Miller" <davem@...emloft.net>,
        Richard Cochran <richardcochran@...il.com>,
        Claudiu Manoil <claudiu.manoil@....com>,
        Jakub Kicinski <kuba@...nel.org>,
        Vladimir Oltean <vladimir.oltean@....com>,
        Russell King <linux@...linux.org.uk>
Subject: [net-next, v2, 0/2] enetc: support PTP Sync packet one-step timestamping

This patch-set is to add one-step timestamping support for PTP Sync
packet. Since ENETC single-step register has to be configured dynamically
per packet for correctionField offeset and UDP checksum update, current
one-step timestamping packet has to be sent only when the last one
completes transmitting on hardware. So, on the TX the patch implements
below process:

- For one-step timestamping packet, queue to skb queue.
- Start a work to transmit skbs in queue.
- For other skbs, transmit immediately.
- mutex lock used to ensure the last one-step timestamping packet has
  already been transmitted on hardware before transmitting current one.

Changes for v2:
	- Rebased.
	- Fixed issues from patchwork checks.
	- netif_tx_lock for one-step timestamping packet sending.

Yangbo Lu (2):
  enetc: mark TX timestamp type per skb
  enetc: support PTP Sync packet one-step timestamping

 drivers/net/ethernet/freescale/enetc/enetc.c  | 212 ++++++++++++++++--
 drivers/net/ethernet/freescale/enetc/enetc.h  |  24 +-
 .../ethernet/freescale/enetc/enetc_ethtool.c  |   3 +-
 .../net/ethernet/freescale/enetc/enetc_hw.h   |   7 +
 4 files changed, 220 insertions(+), 26 deletions(-)


base-commit: 3cd52c1e32fe7dfee09815ced702db9ee9f84ec9
-- 
2.25.1