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[5.89.66.224]) by smtp.gmail.com with ESMTPSA id s1-20020a5d4ec1000000b002882600e8a0sm7192839wrv.12.2023.01.08.16.09.07 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 08 Jan 2023 16:09:07 -0800 (PST) Date: Mon, 9 Jan 2023 01:09:06 +0100 From: Piergiorgio Beruto To: Andrew Lunn , Heiner Kallweit , Russell King , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni Cc: linux-kernel@vger.kernel.org, netdev@vger.kernel.org, Oleksij Rempel , mailhol.vincent@wanadoo.fr, sudheer.mogilappagari@intel.com, sbhatta@marvell.com, linux-doc@vger.kernel.org, wangjie125@huawei.com, corbet@lwn.net, lkp@intel.com, gal@nvidia.com, gustavoars@kernel.org, bagasdotme@gmail.com Subject: [PATCH v3 net-next 0/5] add PLCA RS support and onsemi NCN26000 Message-ID: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org This patchset adds support for getting/setting the Physical Layer Collision Avoidace (PLCA) Reconciliation Sublayer (RS) configuration and status on Ethernet PHYs that supports it. PLCA is a feature that provides improved media-access performance in terms of throughput, latency and fairness for multi-drop (P2MP) half-duplex PHYs. PLCA is defined in Clause 148 of the IEEE802.3 specifications as amended by 802.3cg-2019. Currently, PLCA is supported by the 10BASE-T1S single-pair Ethernet PHY defined in the same standard and related amendments. The OPEN Alliance SIG TC14 defines additional specifications for the 10BASE-T1S PHY, including a standard register map for PHYs that embeds the PLCA RS (see PLCA management registers at https://www.opensig.org/about/specifications/). The changes proposed herein add the appropriate ethtool netlink interface for configuring the PLCA RS on PHYs that supports it. A separate patchset further modifies the ethtool userspace program to show and modify the configuration/status of the PLCA RS. Additionally, this patchset adds support for the onsemi NCN26000 Industrial Ethernet 10BASE-T1S PHY that uses the newly added PLCA infrastructure. Piergiorgio Beruto (5): net/ethtool: add netlink interface for the PLCA RS drivers/net/phy: add the link modes for the 10BASE-T1S Ethernet PHY drivers/net/phy: add connection between ethtool and phylib for PLCA drivers/net/phy: add helpers to get/set PLCA configuration drivers/net/phy: add driver for the onsemi NCN26000 10BASE-T1S PHY Documentation/networking/ethtool-netlink.rst | 138 +++++++++ MAINTAINERS | 14 + drivers/net/phy/Kconfig | 7 + drivers/net/phy/Makefile | 1 + drivers/net/phy/mdio-open-alliance.h | 46 +++ drivers/net/phy/ncn26000.c | 171 ++++++++++++ drivers/net/phy/phy-c45.c | 191 +++++++++++++ drivers/net/phy/phy-core.c | 5 +- drivers/net/phy/phy.c | 192 +++++++++++++ drivers/net/phy/phy_device.c | 17 ++ drivers/net/phy/phylink.c | 6 +- include/linux/ethtool.h | 12 + include/linux/phy.h | 84 ++++++ include/uapi/linux/ethtool.h | 3 + include/uapi/linux/ethtool_netlink.h | 25 ++ net/ethtool/Makefile | 2 +- net/ethtool/common.c | 8 + net/ethtool/netlink.c | 29 ++ net/ethtool/netlink.h | 6 + net/ethtool/plca.c | 277 +++++++++++++++++++ 20 files changed, 1231 insertions(+), 3 deletions(-) create mode 100644 drivers/net/phy/mdio-open-alliance.h create mode 100644 drivers/net/phy/ncn26000.c create mode 100644 net/ethtool/plca.c -- 2.37.4