K5160

[nietzsche at lysator.liu.se]

Digging more into it it seems like I'm getting 32-bit frames from the
modem but sending 16-bit frames as you suggested.

//M

> OK, this is the pcap dump of the start and connect sequence on Windows 10
> with Telenor SE.
>
> //Markus
>
>> Ive added the NDP fixup to the driver to no avail.
>>
>> I'll do some USB-dumping on Windows. Good news is that it support the
>> huawei embedded AT commands.
>>
>> //M
>>
>> Den 1 mar 2016 11:57 skrev Bjørn Mork <bjorn at mork.no>:
>>>
>>> Markus Gothe <nietzsche at lysator.liu.se> writes:
>>>
>>> > Bjørn, what's the status of this device? Did people get it working
>>> with NDP fixes???
>>>
>>> No, not as far as I know.  You have probably seen this thread, which
>>> is
>>> without success so far:
>>> http://www.draisberghof.de/usb_modeswitch/bb/viewtopic.php?f=4&t=2485
>>>
>>> There are similar (or the same?) issues with the E3372:
>>> https://bugs.freedesktop.org/show_bug.cgi?id=94340
>>>
>>> I don't really know what is going on here.  Looks like "NDP to end" is
>>> not the (only) problem.  The symptoms are similar to what we saw when
>>> I
>>> messed up the setup sequence: The modem silently ignores our
>>> SET_NTB_FORMAT reuquest and continues to operate in 32bit mode.  So I
>>> am
>>> wondering if it might be a problem with our setup.  Maybe the modem
>>> doesn't like being told to do 16bit mode while the buffers are > 2^16?
>>>
>>> If you have the hardware and can reproduce the problem, then it might
>>> be
>>> worth trying to move the initial buffer setup before the
>>> SET_NTB_FORMAT.
>>> Maybe cdc_ncm_setup(dev) can be moved into cdc_ncm_init(dev)?  I don't
>>> remember why I split it like that...  Might have been a good reason.
>>> Or not.
>>>
>>>
>>> Bjørn
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