GPRS support for Ofono

[Denis Kenzior]

Hi Remi,

> ----- Message d'origine -----
>
> > I already told you I'm open to fixing it.  However 27.007 is the only
> > standard we have right now.
>
> That's easy to fix. Remove those from the GPRS status.

The core only reports these attributes, it doesn't actually use them for 
anything.  When attached you can simply send a status=registered, LAC, CellId 
and Tech set to -1.  We can see about removing these a bit later.

>
> > Different network probably not, but different base station?  Again I'm
> > not the expert here either.  The API was posted for review back in early
> > September, and Nokia participated in the design.
>
> That is not possible either to our understanding. If it were possible, the
> ISI modems would expose that data separately, which they don't.

I suspect you're right.

> > I believe the current API already covers this.  Context active state and
> > attached state are tracked separately.  Thus you can be attached with no
> > active context, I do it all the time.  Can't you just turn on your 'auto-
> > attach' mode when oFono calls 'set_attached' with TRUE and turn off
> > attachment when oFono calls 'set_attached' with FALSE?
>
> That is different. If you are outside of coverage, or in a non-GPRS area,
> you can turn auto-attach on. That will make some operators happy but it
> wont't attach just yet.

Sorry I don't see a practical difference.  You set 'Powered' to TRUE, gprs atom 
issues a 'set_attached' with TRUE.  Once you have attached the driver sends 
out a ofono_gprs_status_notify.  Whether this happens in 1 second or 2 hours 
doesn't really matter.

Regards,
-Denis