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

[Marek Pazdan]

I can remove this part (rte_eth_config), but the new API provides other
link information which is not available from the existing API, like
supported/advertising/partner_advertising link modes.
Additionally from what I see, rte_eth_confg is available from
rte_eth_dev_conf_get API and it's copy of requested configuration:
`memcpy(dev_conf, &dev->data->dev_conf, sizeof(struct rte_eth_conf));`


On Wed, Apr 3, 2024 at 7:23 PM Stephen Hemminger <stephen at networkplumber.org>
wrote:

> On Wed, 3 Apr 2024 16:59:08 +0200
> Marek Pazdan <mpazdan at arista.com> wrote:
>
> > Hi Thomas,
> >
> > Information like advertising: speed, pause, autonegotiation etc. and that
> > same for link partner advertising.
> > I try to mimic ethtool since it's a common, well known and widely used
> tool
> > so adding an API which provides the same set of information in case the
> > interface is passthrough to dpdk will be useful I think.
> > I've 2 more patches dependent on the one we are discussing now, but I
> need
> > patchwork id to add dependency information. I need moderator approval for
> > the current patch.
> >
> > Regards,
> > Marek
>
> DPDK already had this info under rte_eth_conf and it is supported
> on all drivers. Why introduce yet another API and only for some drivers?
>
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