[OpenWrt-Devel] Advice needed - Proper approach to port 5G/LTE modem into OpenWRT

Jeonghum Joh oosaprogrammer at gmail.com
Mon Apr 27 22:44:50 EDT 2020

Hello Michael,

Thank you for sharing the helpful url. I guess mwan3[1] would deal such
daemons - netifd and hotplug.d. Isn't it? If mwan3 deals with those, I
guess I only need to utilize mwan3. Am I right?

Thank you for answering my questions.

[1] https://openwrt.org/docs/guide-user/network/wan/multiwan/mwan3

2020년 4월 28일 (화) 오전 1:12, Michael Jones <mike at meshplusplus.com>님이 작성:

> On Mon, Apr 27, 2020 at 7:42 AM Bjørn Mork <bjorn at mork.no> wrote:
>> Jeonghum Joh <oosaprogrammer at gmail.com> writes:
>> > I am porting a 5G/LTE modem into OpenWRT.
>> Follow the instructions for LTE modems.  A 5G modem is pretty much the
>> same wrt drivers and basic management.  At least for Qualcomm based
>> modems on a USB bus.  Have no experience with anything else.  The Intel
>> and Huawei modems are competely unknown to me, and most likely
>> unsupported for the forseeable future.  And I'm also blank on the magic
>> of Qualcomms PCIe interface. Qualcomm did work on a driver, but it's
>> been a long time since I saw any update on that.  I guess no one cares
>> enough.  SuperSpeed USB is fine for most users for now.
>> Anyway, several X55 based modems are already supported out of the box in
>> OpenWrt master.  There is no need to reinvent the wheel if you are using
>> one of those.
>> You may obviously decide to implement your own alternative solutions,
>> like using some vendor software. But that will limit the user community
>> severely. At least until the solution attracts more users.  And
>> community support depends on users, which I believe is something you
>> should consider since you have ended up in this forum.  You are unlikely
>> to find anyone here who have any experience with your particular vendor
>> software version.
>> Personally, I am happy to give advice about anything regardless of
>> experience.  But the quality of that advice is probably a tiny bit
>> better when it is based on something I've tried myself.  Or maybe not?
>> Is probably bad in any case.
>> Bjørn
> @Jeonghum Joh
> If you decide to use the connection management software that the vendor
> supplied, you'll want to integrate it into Netifd and Hotplug.d to ensure
> appropriate cross communication with things in the OpenWRT system.
> Please look at this file to see an example of how that is done:
> https://github.com/openwrt/packages/blob/master/net/modemmanager/files/modemmanager.proto There's
> a whole rabbit hole that you can follow on this topic to get every detail
> right, but it's probably sufficient for your purposes to get the high level
> details, and then let the OpenWRT stack take care of the rest.
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