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

quoted

Hi,

Armada has options for 1G/10G ports without PHY's(for example

community board Macchiato single shot).

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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.

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Current phylink return error if I do this on ports with

MLO_AN_FIXED(callback phylink_ethtool_set_pauseparam):

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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.