linux.git/include/uapi/linux/ethtool.h, branch v6.12.80

net: phy: Introduce ethernet link topology representation

2024-08-23T12:04:34+00:00

Link topologies containing multiple network PHYs attached to the same
net_device can be found when using a PHY as a media converter for use
with an SFP connector, on which an SFP transceiver containing a PHY can
be used.

With the current model, the transceiver's PHY can't be used for
operations such as cable testing, timestamping, macsec offload, etc.

The reason being that most of the logic for these configuration, coming
from either ethtool netlink or ioctls tend to use netdev->phydev, which
in multi-phy systems will reference the PHY closest to the MAC.

Introduce a numbering scheme allowing to enumerate PHY devices that
belong to any netdev, which can in turn allow userspace to take more
precise decisions with regard to each PHY's configuration.

The numbering is maintained per-netdev, in a phy_device_list.
The numbering works similarly to a netdevice's ifindex, with
identifiers that are only recycled once INT_MAX has been reached.

This prevents races that could occur between PHY listing and SFP
transceiver removal/insertion.

The identifiers are assigned at phy_attach time, as the numbering
depends on the netdevice the phy is attached to. The PHY index can be
re-used for PHYs that are persistent.

Signed-off-by: Maxime Chevallier 
Reviewed-by: Christophe Leroy 
Tested-by: Christophe Leroy 
Signed-off-by: David S. Miller

net: phy: bcm54811: New link mode for BroadR-Reach

2024-07-15T03:38:34+00:00

Introduce a new link mode necessary for 10 MBit single-pair
connection in BroadR-Reach mode on bcm5481x PHY by Broadcom.
This new link mode, 10baseT1BRR, is known as 1BR10 in the Broadcom
terminology. Another link mode to be used is 1BR100 and it is already
present as 100baseT1, because Broadcom's 1BR100 became 100baseT1
(IEEE 802.3bw).

Signed-off-by: Kamil Horák (2N) 
Reviewed-by: Florian Fainelli 
Reviewed-by: Andrew Lunn 
Link: https://patch.msgid.link/20240712150709.3134474-2-kamilh@axis.com
Signed-off-by: Jakub Kicinski

net: ethtool: pse-pd: Expand C33 PSE status with class, power and extended state

2024-07-06T01:30:00+00:00

This update expands the status information provided by ethtool for PSE c33.
It includes details such as the detected class, current power delivered,
and extended state information.

Reviewed-by: Oleksij Rempel 
Signed-off-by: Kory Maincent 
Link: https://patch.msgid.link/20240704-feature_poe_power_cap-v6-1-320003204264@bootlin.com
Signed-off-by: Jakub Kicinski

ethtool: Add an interface for flashing transceiver modules' firmware

2024-06-28T09:48:22+00:00

CMIS compliant modules such as QSFP-DD might be running a firmware that
can be updated in a vendor-neutral way by exchanging messages between
the host and the module as described in section 7.3.1 of revision 5.2 of
the CMIS standard.

Add a pair of new ethtool messages that allow:

* User space to trigger firmware update of transceiver modules

* The kernel to notify user space about the progress of the process

The user interface is designed to be asynchronous in order to avoid
RTNL being held for too long and to allow several modules to be
updated simultaneously. The interface is designed with CMIS compliant
modules in mind, but kept generic enough to accommodate future use
cases, if these arise.

Signed-off-by: Danielle Ratson 
Reviewed-by: Petr Machata 
Reviewed-by: Andrew Lunn 
Signed-off-by: David S. Miller

net: revert partially applied PHY topology series

2024-05-14T01:35:02+00:00

The series is causing issues with PHY drivers built as modules.
Since it was only partially applied and the merge window has
opened let's revert and try again for v6.11.

Revert 6916e461e793 ("net: phy: Introduce ethernet link topology representation")
Revert 0ec5ed6c130e ("net: sfp: pass the phy_device when disconnecting an sfp module's PHY")
Revert e75e4e074c44 ("net: phy: add helpers to handle sfp phy connect/disconnect")
Revert fdd353965b52 ("net: sfp: Add helper to return the SFP bus name")
Revert 841942bc6212 ("net: ethtool: Allow passing a phy index for some commands")

Link: https://lore.kernel.org/all/171242462917.4000.9759453824684907063.git-patchwork-notify@kernel.org/
Link: https://lore.kernel.org/all/20240507102822.2023826-1-maxime.chevallier@bootlin.com/
Link: https://lore.kernel.org/r/20240513154156.104281-1-kuba@kernel.org
Signed-off-by: Jakub Kicinski

net: pse-pd: Introduce PSE types enumeration

2024-04-19T01:27:01+00:00

Introduce an enumeration to define PSE types (C33 or PoDL),
utilizing a bitfield for potential future support of both types.
Include 'pse_get_types' helper for external access to PSE type info.

Reviewed-by: Andrew Lunn 
Signed-off-by: Kory Maincent 
Link: https://lore.kernel.org/r/20240417-feature_poe-v9-2-242293fd1900@bootlin.com
Signed-off-by: Jakub Kicinski

ethtool: Expand Ethernet Power Equipment with c33 (PoE) alongside PoDL

2024-04-19T01:27:01+00:00

In the current PSE interface for Ethernet Power Equipment, support is
limited to PoDL. This patch extends the interface to accommodate the
objects specified in IEEE 802.3-2022 145.2 for Power sourcing
Equipment (PSE).

The following objects are now supported and considered mandatory:
- IEEE 802.3-2022 30.9.1.1.5 aPSEPowerDetectionStatus
- IEEE 802.3-2022 30.9.1.1.2 aPSEAdminState
- IEEE 802.3-2022 30.9.1.2.1 aPSEAdminControl

To avoid confusion between "PoDL PSE" and "PoE PSE", which have similar
names but distinct values, we have followed the suggestion of Oleksij
Rempel and Andrew Lunn to maintain separate naming schemes for each,
using c33 (clause 33) prefix for "PoE PSE".
You can find more details in the discussion threads here:
https://lore.kernel.org/netdev/20230912110637.GI780075@pengutronix.de/
https://lore.kernel.org/netdev/2539b109-72ad-470a-9dae-9f53de4f64ec@lunn.ch/

Reviewed-by: Andrew Lunn 
Reviewed-by: Oleksij Rempel 
Signed-off-by: Kory Maincent 
Link: https://lore.kernel.org/r/20240417-feature_poe-v9-1-242293fd1900@bootlin.com
Signed-off-by: Jakub Kicinski

net: phy: Introduce ethernet link topology representation

2024-04-06T17:25:14+00:00

Link topologies containing multiple network PHYs attached to the same
net_device can be found when using a PHY as a media converter for use
with an SFP connector, on which an SFP transceiver containing a PHY can
be used.

With the current model, the transceiver's PHY can't be used for
operations such as cable testing, timestamping, macsec offload, etc.

The reason being that most of the logic for these configuration, coming
from either ethtool netlink or ioctls tend to use netdev->phydev, which
in multi-phy systems will reference the PHY closest to the MAC.

Introduce a numbering scheme allowing to enumerate PHY devices that
belong to any netdev, which can in turn allow userspace to take more
precise decisions with regard to each PHY's configuration.

The numbering is maintained per-netdev, in a phy_device_list.
The numbering works similarly to a netdevice's ifindex, with
identifiers that are only recycled once INT_MAX has been reached.

This prevents races that could occur between PHY listing and SFP
transceiver removal/insertion.

The identifiers are assigned at phy_attach time, as the numbering
depends on the netdevice the phy is attached to. The PHY index can be
re-used for PHYs that are persistent.

Signed-off-by: Maxime Chevallier 
Reviewed-by: Andrew Lunn 
Signed-off-by: David S. Miller

ethtool: Add GTP RSS hash options to ethtool.h

2024-03-06T17:24:41+00:00

This is a patch that enables RSS functionality for GTP packets using ethtool.

A user can include TEID and make RSS work for GTP-U over IPv4 by doing the
following:`ethtool -N ens3 rx-flow-hash gtpu4 sde`

In addition to gtpu(4|6), we now support gtpc(4|6),gtpc(4|6)t,gtpu(4|6)e,
gtpu(4|6)u, and gtpu(4|6)d.

gtpc(4|6): Used for GTP-C in IPv4 and IPv6, where the GTP header format does
not include a TEID.
gtpc(4|6)t: Used for GTP-C in IPv4 and IPv6, with a GTP header format that
includes a TEID.
gtpu(4|6): Used for GTP-U in both IPv4 and IPv6 scenarios.
gtpu(4|6)e: Used for GTP-U with extended headers in both IPv4 and IPv6.
gtpu(4|6)u: Used when the PSC (PDU session container) in the GTP-U extended
header includes Uplink, applicable to both IPv4 and IPv6.
gtpu(4|6)d: Used when the PSC in the GTP-U extended header includes Downlink,
for both IPv4 and IPv6.

GTP generates a flow that includes an ID called TEID to identify the tunnel.
This tunnel is created for each UE (User Equipment).By performing RSS based on
this flow, it is possible to apply RSS for each communication unit from the UE.
Without this, RSS would only be effective within the range of IP addresses. For
instance, the PGW can only perform RSS within the IP range of the SGW.
Problematic from a load distribution perspective, especially if there's a bias
in the terminals connected to a particular base station.This case can be
solved by using this patch.

Signed-off-by: Takeru Hayasaka 
Reviewed-by: Marcin Szycik 
Tested-by: Pucha Himasekhar Reddy  (A Contingent worker at Intel)
Signed-off-by: Tony Nguyen

Revert "Introduce PHY listing and link_topology tracking"

2024-01-05T00:05:47+00:00

This reverts commit 32bb4515e34469975abc936deb0a116c4a445817.
This reverts commit d078d480639a4f3b5fc2d56247afa38e0956483a.
This reverts commit fcc4b105caa4b844bf043375bf799c20a9c99db1.
This reverts commit 345237dbc1bdbb274c9fb9ec38976261ff4a40b8.
This reverts commit 7db69ec9cfb8b4ab50420262631fb2d1908b25bf.
This reverts commit 95132a018f00f5dad38bdcfd4180d1af955d46f6.
This reverts commit 63d5eaf35ac36cad00cfb3809d794ef0078c822b.
This reverts commit c29451aefcb42359905d18678de38e52eccb3bb5.
This reverts commit 2ab0edb505faa9ac90dee1732571390f074e8113.
This reverts commit dedd702a35793ab462fce4c737eeba0badf9718e.
This reverts commit 034fcc210349b873ece7356905be5c6ca11eef2a.
This reverts commit 9c5625f559ad6fe9f6f733c11475bf470e637d34.
This reverts commit 02018c544ef113e980a2349eba89003d6f399d22.

Looks like we need more time for reviews, and incremental
changes will be hard to make sense of. So revert.

Link: https://lore.kernel.org/all/ZZP6FV5sXEf+xd58@shell.armlinux.org.uk/
Signed-off-by: Jakub Kicinski