Re: [PATCH 0 of 20] [RFC] ipath - PathScale InfiniPath driver

Arjan van de Ven
2006-01-03T20:57:38Z

On Tue, 2006-01-03 at 12:54 -0800, Bryan O'Sullivan wrote:
> On Tue, 2006-01-03 at 09:27 -0800, Greg KH wrote:
>
> > Idealy, nothing should be new ioctls. But in the end, it all depends on
> > exactly what you are trying to do with each different one.
>
> Fair enough.
>
> > I really don't know what the subnet management stuff involves, sorry.
> > But doesn't the open-ib layer handle that all for you already?
>
> It does when our OpenIB driver is being used. But our lower level
> driver is independent of OpenIB (and is often used without the
> infiniband stuff even configured into the kernel), and needs to provide
> some way for a userspace subnet management agent to send and receive
> packets.

that sounds like your driver should mimic the openIB userspace ABI for
this *exactly* so that you can use the same management tools for either
scenario...