RE: [EXT] Re: Phylink flow control support on ports with MLO_AN_FIXED auto negotiation

[Stefan Chulski <stefanc@marvell.com>]

> > Hi,
> >
> > Armada has options for 1G/10G ports without PHY's(for example
> community board Macchiato single shot).
> > This port doesn't have PHY's and cannot negotiate Flow Control support,
> but we can for example connect two ports without PHY's and manually(by
> ethtool) configure FC.
> 
> On the Macchiatobin single shot, you use the existing SFP support rather
> than forcing them to fixed link.
> 
> > Current phylink return error if I do this on ports with
> MLO_AN_FIXED(callback phylink_ethtool_set_pauseparam):
> > if (pl->cur_link_an_mode == MLO_AN_FIXED)
> >                 return -EOPNOTSUPP;
> >
> > How can we enable FC configurations for these ports? Do you have any
> suggestions or should I post my proposal as an RFC patch?
> 
> If you really must use fixed-link, you specify the pause modes via firmware,
> just as you specify the speed and duplex - you specify the link partner's flow
> control abilities.

In this case we cannot change this by ethtool during runtime?

Regards,
Stefan.