On Fri, Nov 2, 2018, 22:11 Warner Losh <i...@bsdimp.com> wrote: > On Fri, Nov 2, 2018 at 8:04 AM Andrey V. Elsukov <bu7c...@yandex.ru> > wrote: > > > On 02.11.2018 16:59, Warner Losh wrote: > > > All the commands for USB modems should be described here: > > > > > > https://www.usb.org/sites/default/files/CDC_EEM10.pdf > > > > > > I'm sorry, but I don't have time currently to decode the Linux > traces > > > and compare with FreeBSD. > > > > > > > > > One thing to also note about the Linux driver. "it just works" is only > > > because people have inserted a crap-ton of special cases and dealt with > > > weird quirks of different devices, and devices that are only kinda > sorta > > > standards conforming, but easy enough to hack the driver to make work. > > > Chances are quite good you'll have to, as hps points out, puzzle > through > > > the traces to find where it's non-conformant and/or our driver is > > > non-compliant. > > > > So, when it "just work" under Linux, Windows and Mac OS, but doesn't > > work under FreeBSD, I suspect we need fix FreeBSD :) > > > > We need to add support for this device yes. However, my point is that the > other systems may have quirks and kinks in their drivers to cope with the > non-conformity of a device that doesn't quite conform to the standards. > This was to answer an earlier assertion that the device was standard, which > I don't believe to be supported by the facts. There's some quirk or special > driver needed for this odd-ball device. Since it can be almost impossible > to do this work from pure traces alone, the person with the device needs to > puzzle it out, or pay someone to puzzle it out... > > Warner > Lol
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