[PATCH] lib: add get/set link settings interface

[Thomas Monjalon]

03/04/2024 15:59, Marek Pazdan:
>  There are link settings parameters available from PMD drivers level
>  which are currently not exposed to the user via consistent interface.
>  When interface is available for system level those information can
>  be acquired with 'ethtool DEVNAME' (ioctl: ETHTOOL_SLINKSETTINGS/
>  ETHTOOL_GLINKSETTINGS). There are use cases where
>  physical interface is passthrough to dpdk driver and is not available
>  from system level. Information provided by ioctl carries information
>  useful for link auto negotiation settings among others.

Which information is missing exactly?
Why are you trying to mimic ethtool API?

Please let's add what is missing instead of adding a full new API.