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

On 2021/6/25 3:25, Jakub Kicinski wrote:

On Thu, 24 Jun 2021 22:36:45 +0800 Guangbin Huang wrote:

quoted

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.
.

Ok, thanks.