Location of rmnet setup

Daniele Palmas dnlplm at gmail.com
Fri Oct 9 06:02:37 UTC 2020

Hi Michal,

Il ven 9 ott 2020, 04:05 Michał Mazur <mkm at semihalf.com> ha scritto:

> Hi Aleksander,
> Thank you for the reply. As you suggested I created MMPortRmnet to handle
> data port setup:
> https://gitlab.freedesktop.org/mkm/ModemManager/-/commit/b25310666e41a19150fe2b18ff3b7cce73f9129a
> It includes all the code that uses the rmnet library to configure devices
> but it is not probed yet.

Can you please post a link for the official librmnetctl code repository?

I can find many, but I'm not sure of the correct one.


> Regards,
> Michal
> sob., 3 paź 2020 o 14:34 Aleksander Morgado <aleksander at aleksander.es>
> napisał(a):
>> Hey Michał!
>> >
>> > We've decided to move the rmnet configuration to libqmi. It seems to be
>> a better place because there is already a class for QRTR control socket.
>> I would suggest discussing in the public mailing list or in gitlab
>> issues this kind of thing, so that everyone can participate in the
>> discussion.
>> >
>> >
>> https://gitlab.freedesktop.org/mkm/libqmi/-/commit/3e063884efd6cc217e91be4601ee3b
>> > This patch adds a new class for QRTR data port. During initialization
>> it opens an INET socket to bring up the rmnet_ipa device and uses the
>> rmnetctl library to create a virtual network device (rmnet_data0). This new
>> device will be used in ModemManager.
>> How is it that the "QRTR data port" does nothing with the QRTR
>> protocol? Yes, this rmnet data port is the one that would be used for
>> data while QRTR is used for control, but I don't think libqrtr would
>> be the place to add this. From an outsider perspective, you could say
>> you need libqmi+libqrtr for control, and rmnetctl to bring up the data
>> network interface, but I wouldn't add this new object in libqrtr, as
>> it really has nothing to do with the QRTR protocol itself.
>> If you ask me, ModemManager is a better place for this, e.g. a let's
>> say a MMPortRmnet object which would map the virtual network interface
>> created with rmnetctl. Oh wait, I did already suggest something like
>> this in a previous email that was never replied...
>> --
>> Aleksander
>> https://aleksander.es
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>> ModemManager-devel at lists.freedesktop.org
>> https://lists.freedesktop.org/mailman/listinfo/modemmanager-devel
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