Re: [RFC PATCH net-next 0/2] ethtool: add interface capabilities and PHY test

[Maxime Chevallier <maxime.chevallier@bootlin.com>]

Hi,

On 8/25/26 06:37, Shubham Das wrote:
> This series adds two new ethtool netlink commands:
> 
> 1. intf-caps-get: Discovers the functional block layout of a network
>    interface. Each block represents a hardware point (MAC/PHY/MODULE)
>    at a specific 802.3 sublayer (RS/PCS/FEC/PMA/PMD) with its
>    supported capabilities (loopback, test patterns, BERT, error
>    injection).
> 
> 2. phy-test-get / phy-test-act: Per-block, per-lane PHY testing using
>    test patterns, BERT (Bit Error Ratio Test), and error injection.
>    The block_id from intf-caps-get identifies which hardware point
>    to test.
> 
> The block model uses:
>   - component: which hardware entity (MAC, PHY, MODULE)
>   - sublayer: which 802.3 layer (RS, PCS, FEC, PMA, PMD)
>   - instance: identifies multiple instances of the same component
>     (e.g., internal vs external PHY)
>   - depth: host-side vs line-side within the same sublayer

+Björn,

I'll try to give this a read/test in the next days, 

Maxime

> 
> Prior discussion on this proposal:
> Link: https://lore.kernel.org/netdev/SN7PR11MB810923BBDEC398E860099150FF1B2@SN7PR11MB8109.namprd11.prod.outlook.com/
> 
> Shubham Das (2):
>   ethtool: add interface capabilities query (intf-caps-get)
>   ethtool: add PHY test framework (phy-test-get, phy-test-act)
> 
>  Documentation/netlink/specs/ethtool.yaml      | 206 ++++++++++++++++++
>  include/linux/ethtool.h                       |  92 ++++++++
>  .../uapi/linux/ethtool_netlink_generated.h    | 104 +++++++++
>  net/ethtool/Makefile                          |   2 +-
>  net/ethtool/intf_caps.c                       | 130 +++++++++++
>  net/ethtool/netlink.c                         |  24 ++
>  net/ethtool/netlink.h                         |   7 +
>  net/ethtool/phytest.c                         | 171 +++++++++++++++
>  8 files changed, 735 insertions(+), 1 deletion(-)
>  create mode 100644 net/ethtool/intf_caps.c
>  create mode 100644 net/ethtool/phytest.c
>