linux-kernel - Query on how WWAN and Modem interact

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-ID: <CAHP4M8VDaAQF=5DTNX2SoMmytNwjsa82i1qfx3FnFvpjH4eYVg@mail.gmail.com>
Date:   Fri, 29 Mar 2019 10:05:36 +0530
From:   Ajay Garg <ajaygargnsit@...il.com>
To:     linux-kernel@...r.kernel.org
Subject: Query on how WWAN and Modem interact

Hi All.

I am sorry upfront if this might seem like a stupid question.
I am wanting to have some insight on how a modem plugs into the
linux-kernel at architecture level.

First a bit of history.
I have prior experience of using an onboard-modem on a ubuntu, via
support from modem-manager. There, after the modem was (successfully)
set up via "mmcli", the "wwan" interface started showing in
"ifconfig", which then presented itself to be used just like any other
wifi/ethernet listings in "ifconfig".

Now, we are in a bit of situation, where only the AT-interface (of the
modem) might be available to us (via a serial /dev/tty interface).
Also, using AT-commands to actually set up sockets is also fine.

Now, my query is once the AT-commands succesfully set up a socket, how
does that link to "wwan" interface in "ifconfig" listings.

Will be grateful to have the experts throw some light on this.

Thanks and Regards,
Ajay