[PATCH net-next v11 00/13] Introduce PHY listing and link_topology tracking

From: Maxime Chevallier
Date: Thu Apr 04 2024 - 05:30:44 EST


Hello everyone,

This is V11 for the link topology addition, allowing to track all PHYs
that are linked to netdevices.

This V11 addresses the various netlink-related issues that were raised
by Jakub, and fixes some typos in the documentation.

As a remainder, here's what the PHY listings would look like :
- eth0 has a 88x3310 acting as media converter, and an SFP module with
an embedded 88e1111 PHY
- eth2 has a 88e1510 PHY

# ethtool --show-phys *

PHY for eth0:
PHY index: 1
Driver name: mv88x3310
PHY device name: f212a600.mdio-mii:00
Downstream SFP bus name: sfp-eth0
PHY id: 0
Upstream type: MAC

PHY for eth0:
PHY index: 2
Driver name: Marvell 88E1111
PHY device name: i2c:sfp-eth0:16
PHY id: 21040322
Upstream type: PHY
Upstream PHY index: 1
Upstream SFP name: sfp-eth0

PHY for eth2:
PHY index: 1
Driver name: Marvell 88E1510
PHY device name: f212a200.mdio-mii:00
PHY id: 21040593
Upstream type: MAC

Ethtool patches : https://github.com/minimaxwell/ethtool/tree/link-topo-v6

Link to V10: https://lore.kernel.org/netdev/20240304151011.1610175-1-maxime.chevallier@xxxxxxxxxxx/
Link to V9: https://lore.kernel.org/netdev/20240228114728.51861-1-maxime.chevallier@xxxxxxxxxxx/
Link to V8: https://lore.kernel.org/netdev/20240220184217.3689988-1-maxime.chevallier@xxxxxxxxxxx/
Link to V7: https://lore.kernel.org/netdev/20240213150431.1796171-1-maxime.chevallier@xxxxxxxxxxx/
Link to V6: https://lore.kernel.org/netdev/20240126183851.2081418-1-maxime.chevallier@xxxxxxxxxxx/
Link to V5: https://lore.kernel.org/netdev/20231221180047.1924733-1-maxime.chevallier@xxxxxxxxxxx/
Link to V4: https://lore.kernel.org/netdev/20231215171237.1152563-1-maxime.chevallier@xxxxxxxxxxx/
Link to V3: https://lore.kernel.org/netdev/20231201163704.1306431-1-maxime.chevallier@xxxxxxxxxxx/
Link to V2: https://lore.kernel.org/netdev/20231117162323.626979-1-maxime.chevallier@xxxxxxxxxxx/
Link to V1: https://lore.kernel.org/netdev/20230907092407.647139-1-maxime.chevallier@xxxxxxxxxxx/

Maxime Chevallier (13):
net: phy: Introduce ethernet link topology representation
net: sfp: pass the phy_device when disconnecting an sfp module's PHY
net: phy: add helpers to handle sfp phy connect/disconnect
net: sfp: Add helper to return the SFP bus name
net: ethtool: Allow passing a phy index for some commands
netlink: specs: add phy-index as a header parameter
net: ethtool: Introduce a command to list PHYs on an interface
netlink: specs: add ethnl PHY_GET command set
net: ethtool: plca: Target the command to the requested PHY
net: ethtool: pse-pd: Target the command to the requested PHY
net: ethtool: cable-test: Target the command to the requested PHY
net: ethtool: strset: Allow querying phy stats by index
Documentation: networking: document phy_link_topology

Documentation/netlink/specs/ethtool.yaml | 62 ++++
Documentation/networking/ethtool-netlink.rst | 52 +++
Documentation/networking/index.rst | 1 +
.../networking/phy-link-topology.rst | 120 +++++++
MAINTAINERS | 2 +
drivers/net/phy/Makefile | 2 +-
drivers/net/phy/marvell-88x2222.c | 2 +
drivers/net/phy/marvell.c | 2 +
drivers/net/phy/marvell10g.c | 2 +
drivers/net/phy/phy_device.c | 55 ++++
drivers/net/phy/phy_link_topology.c | 105 ++++++
drivers/net/phy/phylink.c | 3 +-
drivers/net/phy/qcom/at803x.c | 2 +
drivers/net/phy/qcom/qca807x.c | 2 +
drivers/net/phy/sfp-bus.c | 15 +-
include/linux/netdevice.h | 4 +-
include/linux/phy.h | 6 +
include/linux/phy_link_topology.h | 72 +++++
include/linux/phy_link_topology_core.h | 25 ++
include/linux/sfp.h | 8 +-
include/uapi/linux/ethtool.h | 16 +
include/uapi/linux/ethtool_netlink.h | 21 ++
net/core/dev.c | 9 +
net/ethtool/Makefile | 2 +-
net/ethtool/cabletest.c | 16 +-
net/ethtool/netlink.c | 57 +++-
net/ethtool/netlink.h | 10 +
net/ethtool/phy.c | 300 ++++++++++++++++++
net/ethtool/plca.c | 19 +-
net/ethtool/pse-pd.c | 13 +-
net/ethtool/strset.c | 17 +-
31 files changed, 979 insertions(+), 43 deletions(-)
create mode 100644 Documentation/networking/phy-link-topology.rst
create mode 100644 drivers/net/phy/phy_link_topology.c
create mode 100644 include/linux/phy_link_topology.h
create mode 100644 include/linux/phy_link_topology_core.h
create mode 100644 net/ethtool/phy.c

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2.44.0