Re: Linux 2.6.35/TIPC 2.0 ABI breaking changes

From: Leandro Lucarella
Date: Wed Oct 20 2010 - 18:59:42 EST


Leandro Lucarella, el 20 de octubre a las 16:23 me escribiste:
> Leandro Lucarella, el 20 de octubre a las 15:28 me escribiste:
> > Jon Maloy, el 20 de octubre a las 14:10 me escribiste:
> > > <...>
> > > > >
> > > > > Remember, permitting both is a superset of the current one
> > > > (NBO only)
> > > > > so it is fully backwards compatible. We break absolutly nothing by
> > > > > permitting this.
> > > > >
> > > > Thats effectively reverting both our patches though, isn't it
> > > > (not that I'm disagreeing with it, just looking for
> > > > clarification). If we revert my patch and reintroduce the
> > > > htohl mechanism which tracks endianess, we might as well
> > > > revert the TIPC_SUB_SERVICE flag as well, yeah?
> > >
> > > Absolutely. I think it was a mistake to change that value.
> > > But I don't think we need to reintroduce the htohl(). That
> > > was just one way of doing it. If I understood your suggestion
> > > from yesterday correctly you converted the whole message within
> > > one if()clause, without any htohl(). I have have no problem with
> > > that approach.
> >
> > There is a difference between both solutions, the htohl() version
> > tracked the need for swap as a struct subscription member (which was
> > used when sending back events). Neils patch doesn't do that tracking.
> > I don't really know the implications of this, but maybe it would be
> > a wise idea to stay in the safe side and revert both patches for now.
>
> BTW, I tried 2.6.37 reverting both offending patches and everything
> seems to work well.

I meant 2.6.35.7.

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Leandro Lucarella (AKA luca) http://llucax.com.ar/
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