[OpenWrt-Devel] [PATCH 1/2] wwan: Add support for CDC (Huawei 'HiLink') Modems

John Crispin blogic at openwrt.org
Tue Mar 1 03:43:18 EST 2016

On 26/02/2016 08:50, John Crispin wrote:
> On 25/02/2016 08:23, John Crispin wrote:
>> On 24/02/2016 09:08, Bruno Randolf wrote:
>>> On 02/24/2016 06:11 AM, Matti Laakso wrote:
>>>>> The reason is that I want different types of Modems to work with the
>>>>> same interface configuration, using 'wwan'. E.g. it's configured like
>>>>> this (/etc/config/network):
>>>>> config interface 'umts'
>>>>> option proto wwan
>>>>> option apn internet.eplus.de
>>>>> option metric 4
>>>>> And it will work with PPP, QMI, MBIM, HiLink or whatever modem supported
>>>>> by "wwan" (which are hopefully more and more)... Doesn't that make
>>>>> sense? It would help the user who doesn't want to guess wether QMI works
>>>>> better than PPP for a specific modem and which serial port to use, etc...
>>>> That's a good goal, but I think it's confusing for the user when apn and
>>>> pin options don't work with HiLink modems but do work with all other
>>>> modems handled by wwan.
>>> Well, you can see it the other way round: they are not needed for HiLink
>>> modems and it will "just work"... :)
>>> bruno
>> i have to say i agree most with bruno but i need to think about this a
>> bit and i'll test it with the 2 hilinks i have here. i believe that
>> having the wwan proto handle most of the options is desirable as it will
>> not only unify the code path but also the config path which at the end
>> will increase usability.
>> 	John
> Hi,
> this only works if the sim card has no pin set. correct ? i tried it and
> without logging into the webui and adding my pin/apn/ ... there it wont
> go online
> 	John

i have spent ages thinking about this. the main problem is that the unit
wont go online unless we previously set the apn/pin, ... in the webui.
although having a unified wwan proto is great and we should have hilink
support in it, i fear that this will be rather ambiguous to users as
they set the pin in uci and then it wont get applied. so i have heavy
heartedly decided to NAK this. i wish i had more time so we could hack
up a tiny tool to set the webui setting from uci. although that is
really would be an ugly hack.

sorry but i hope that the explanation makes sense.

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