Hi Marcel,
> why to do you bother making this a configurable option? What isthe
> benefit here?
The maximum context count is a compile time option for the ISI modem. Having
this option in oFono makes it possible to optimize the APE side resource usage
instead of overallocating drivers and contexts. Not a huge benefit, I guess,
but the cost is not huge either.
Not a big deal, though. I'll try to see if the context limit could be probed
somehow.
> Personally I think that always enabling 4 context if the hardware
> supports it should be enough. If you do support more then just enable
> more all the time. There are no real resources used in context of ISI
> anyway. The AT command based modems have a different problem since for
> most of them we need an extra TTY/DLC and an extra GAtChat object, but
> ISI does not have that problem.
I don't see the difference. The AT modem resources should be allocated
dynamically as well, at context activation time. (Maybe that's the case
already, I didn't really check.) In any case, I believe oFono has to allow
things like external AT command processors and vendor specific modem tools to
access the TTY's directly bypassing oFono. This means the mux channels should
not be preallocated.
MikaL
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