[LEDE-DEV] [PATCH v2] uqmi: fix raw-ip mode for newer lte modems

[Nicholas Smith]

Here is the VID:PID of the MC7430, if it helps.
Bus 001 Device 002: ID 1199:9071 Sierra Wireless, Inc. 


> On 30 Nov 2017, at 1:49 pm, Nicholas Smith <smith.nicholas910 at gmail.com> wrote:
> 
> Hi Koen,
> 
> I would like to report that it is attempting, but it is unable to change /sys/class/wwan0/qmi/raw_ip to a “Y” on it’s own.  I have to bring the interface down myself, set raw_ip to Y, then bring it back up.  Manual, but it works every time.
> 
> [   40.455550] qmi_wwan 1-2:1.8 wwan0: Cannot change a running device
> 
> Here’s what I do to work around:
> 
> In LuCI go to wwan0 and stop the interface.
> echo “Y” > /sys/class/wwan0/qmi/raw_ip
> In LuCI go to wwan0 and connect the interface.
> 
> 
> 
>> On 28 Nov 2017, at 6:27 pm, Koen Vandeputte <koen.vandeputte at ncentric.com> wrote:
>> 
>> 
>> 
>> On 2017-11-27 23:38, Nicholas Smith wrote:
>>> Hi!
>>> 
>>> Will this also apply to the Sierra MC7430, as it is also raw-ip only?  If I am not mistaken it is the same as the MC7455, just for the Asia/Pacific region.  I would be able to verify this patch on the device.  To verify that it works, do I just look for /sys/class/net/$ifname/qmi/raw_ip ?
>>> 
>>> Nicholas
>>> smith.nicholas910 at gmail.com
>>> 
>> <snip>
>> 
>> Judging by the datasheet compared to the MC7455 and some other resources online:  most likely yes.
>> Keep in mind that this will not work on the 17.01 branch as kernel 4.5 or better is required which contains the needed driver parts and fixes.
>> 
>> If you would like to evaluate, please use master branch.
>> 
>> Testing the patch in full checking connectivity is always better than just checking if that particular file is present.
>> You should see a print referring to raw-ip popping up using logread. (see patch contents)
>> 
>> 
>> Regards,
>> 
>> Koen
>