<p dir="ltr"></p>
<p dir="ltr">Am 13.08.2016 17:28 schrieb Ajay Garg <ajaygargnsit@gmail.com>:<br>
><br>
> Thanks Thomas.<br>
><br>
><br>
> Question 2 :<br>
> =========<br>
><br>
> Let's take a modem working in QMI-mode.<br>
><br>
> With the "qcserial" and "qmi_wwan" drivers installed, and NO OTHER<br>
> VENDOR-SPECIFIC drivers (sierra/zte/huawei/any-other) required or<br>
> installed, the modem (after it is inserted in the USB-slot), will have<br>
> the following two created ::<br>
><br>
> * /dev/cdc-... device-identifier<br>
> * a wwan network-interface (visible via "ifconfig" command)<br>
><br>
> Above two will be created, irrespective of whether or not<br>
> ModemManager/mmcli is compiled/running with<br>
> QMI_DEVICE_OPEN_FLAGS_PROXY set or not.<br>
><br>
> Is my understanding correct?<br>
></p>
<p dir="ltr">The creation of the device files is made by the kernel/udev. Sometimes "option" is also loaded, so you have some additional serial ports.</p>
<p dir="ltr">Modemmanager uses these device files.<br></p>
<p dir="ltr">The qmi-proxy is used for concurrent qmi-accesses e.g. by modemmanager<br>
and qmicli. </p>
<p dir="ltr">https://sigquit.wordpress.com/2013/09/13/sharing-a-qmi-port-between-processes/<br></p>
<p dir="ltr">Ifconfig is obsoleted by ip. Please use ip a or ip l instead.</p>
<p dir="ltr">Thomas<br></p>