Re: [PATCH net-next 3/3] net: hns3: add support for link diagnosis info in debugfs

[Jakub Kicinski]

On Thu, 24 Jun 2021 22:36:45 +0800 Guangbin Huang wrote:
> In order to know reason why link down, add a debugfs file
> "link_diagnosis_info" to get link faults from firmware, and each bit
> represents one kind of fault.
> 
> usage example:
> $ cat link_diagnosis_info
> Reference clock lost

Please use ethtool->get_link_ext_state instead.