Hi, Il giorno gio 4 apr 2019 alle ore 11:00 Johannes Berg <johan...@sipsolutions.net> ha scritto:
> > > (2) Channels are created using sysfs (qmi_wwan) > > > > > > This feels almost worse - channels are created using sysfs and > > > just *bam* new netdev shows up, no networking APIs are used to > > > create them at all, and I suppose you can't even query the channel > > > ID for each netdev if you rename them or so. Actually, maybe you > > > can in sysfs, not sure I understand the code fully. > > > > This time I was, and I tried to learn from the MBIM mistake. So I asked > > the users (ModemManager developers++), proposing a netlink API as a > > possible solution: > > > > https://lists.freedesktop.org/archives/libqmi-devel/2017-January/001900.html > > > > The options I presented were those I saw at the time: VLANs like > > cdc_mbim, a new netlink API, or sysfs. There wasn't much feedback, but > > sysfs "won". So this was a decision made by the users of the API, FWIW. > > Fair point. Dan pointed out that no (default) userspace actually exists > to do this though, and users kinda of have to do it manually - he says > modem manager and libmbim all just use the default channel today. So not > sure they really went on to become users of this ;-) > the qmi_wwan sysfs qmap feature, being very easy to use, is serving well for me and customers of the company I work for (mainly directly with libqmi, not ModemManager), but I understand the need to have a common framework and will gladly test and provide feedback for any new development related to this. Regards, Daniele > > johannes >
