netdev - Re: [PATCH] net: qmi_wwan: MC73xx interface 10 is not QMI

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Date:	Tue, 10 Feb 2015 09:43:09 +0100
From:	Aleksander Morgado <aleksander@...ksander.es>
To:	Bjørn Mork <bjorn@...k.no>
Cc:	David Miller <davem@...hat.com>,
	Kristian Evensen <kristian.evensen@...il.com>,
	"netdev@...r.kernel.org" <netdev@...r.kernel.org>
Subject: Re: [PATCH] net: qmi_wwan: MC73xx interface 10 is not QMI

On Tue, Feb 10, 2015 at 8:49 AM, Bjørn Mork <bjorn@...k.no> wrote:
>>> On Mon, Feb 9, 2015 at 2:33 PM, Bjørn Mork <bjorn@...k.no> wrote:
>>>> That is pretty old relative to this hardware. First commercial release?
>>>> I don't really want to push you to do an upgrade, but it would sure be
>>>> nice to have this test repeated on a recent firmware version.  Not that
>>>> I can spot anything particularily promising in the release notes.
>>>
>>> I updated firmware now, but still see the same behavior.
>>>
>>>> I did find our previous discussions about these two RMNET1 and RMNET2
>>>> functions, e.g:
>>>> http://lists.freedesktop.org/archives/libqmi-devel/2014-July/000875.html
>>>> and it seems to indicate that both work as long as you configure them
>>>> for 802.3 framing. But that could just be an information feedback
>>>> loop...
>>>
>>> That is correct. In order for this device to accept network traffic
>>> (or driver to accept packets from device), I have to set the transfer
>>> mode to 802.3.
>>
>> So what are we going to do with this patch?
>
> I am hoping to get a second opinion from Aleksander.

I have a MC7304 and a MC7354 and both work with interfaces #8 and #10,
the only difference being that #10 ends up being raw-ip by default
instead of 802.3. I previously had old firmware in both, from early
last year IIRC, but last week I upgraded both to the latest firmware
available.

The only case in which I've seen such a modem (a MC7304) with 1 single
valid QMI interface (actually being #8) is when the modem is put in
"single-qmi" interface mode, which you can do forcing it to get the
MC7710 PID, e.g. AT!UDPID=68A2. But otherwise, if the modem was
exposed as 0x68c0, if#10 always worked for me...

-- 
Aleksander
https://aleksander.es
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