[OpenWrt-Devel] QMI data mode cannot set raw-ip due to active device

[Andre Valentin]

Hi Shannon,

I use a hotplug script to change the driver to raw-ip. This works fine for me.

Kind regars,

André

On 23.09.19 19:16, Shannon Barber wrote:
> I'm doing several builds and testing different devices and this issue is persistent on the x86_64 build for the PC Engine APU hardware.
> (I did not encounter it on the Espressobin v7 hardware.)
> 
> I have several modems but I am testing with a Sierra Wireless MC7455 which seems to be a popular one that is also raw-ip only.
> As a quick-fix bringing the interface down and back up where the /lib/netifd/proto/qmi.sh script attempts to change-over to raw-ip seems to work but I'm not certain if its "the right way" to fix this
> issue. It seems to take a while so I think it's retrying later and working the second time.
> 
> 
>                 echo "Device does not support 802.3 mode. Informing driver of raw-ip only for $ifname .."
>                 ifconfig $ifname down
>                 echo "Y" > /sys/class/net/$ifname/qmi/raw_ip
>                 ifconfig $ifname up
> 
> 
> Some snippets from the kernel log:
> 
> [    8.744638] qmi_wwan 1-1.3:1.8: cdc-wdm0: USB WDM device
> [    8.751778] qmi_wwan 1-1.3:1.8 wwan0: register 'qmi_wwan' at usb-0000:00:13.0-1.3, WWAN/QMI device, fa:8c:eb:d2:d5:df
> [    8.765196] qmi_wwan 1-1.3:1.10: cdc-wdm1: USB WDM device
> [    8.772501] qmi_wwan 1-1.3:1.10 wwan1: register 'qmi_wwan' at usb-0000:00:13.0-1.3, WWAN/QMI device, fa:8c:eb:d2:d5:df
> [    8.784460] usbcore: registered new interface driver qmi_wwan
> [    8.793076] usbcore: registered new interface driver rndis_host
> [    8.800987] usbcore: registered new interface driver sierra
> [    8.806989] usbserial: USB Serial support registered for Sierra USB modem
> ...
> [   13.569617] qmi_wwan 1-1.3:1.8 wwan0: Cannot change a running device
> 
> 
> 
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> 

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