> >>                                 100000baseKR2/Full
> >>                                 100000baseSR2/Full
> >>                                 100000baseCR2/Full
> >>                                 100000baseLR2_ER2_FR2/Full
> >>                                 100000baseDR2/Full
> >
> >I'm not sure i fully understand all these different link modes, but i
> >thought these 5 are all 100G using 2 lanes? So why cannot the user
> >simply do
> >
> >ethtool -s swp1 advertise 100000baseKR2/Full
> >
> >and the driver can figure out it needs to use two lanes at 50G?
> 
> 100000baseKR2 is 2 lanes. No need to figure anything out. What do you
> mean by that?

I'm just thinking, rather than add a new UAPI for the number of lanes,
why not use one we already have, if the number of lanes is implied by
the link mode.

    Andrew

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