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

[Bruno Randolf]

On 03/01/2016 08:43 AM, John Crispin wrote:
> 
> 
> 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.

Well, it makes sense only when you need to set APN and PIN. But this
seems to depend on the Provider and SIM card settings.

I know two cases where this is not necessary: "eplus.de" and
"vodafone.es" (PIN lock was disabled manually before in the vodafone.es
case).

Anyhow, this is maybe not a generic enough situation to merit adding
this to OpenWRT...

bruno
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