Re: 答复: MM: Non QMI Huawei modems without PPP support?

[Bjørn Mork <bjorn mork no>]

Olof Ermis <olof ermis gmail com> writes:

> Hi!
>
> I can just verify that on the Huawei E3276 modem i can connect,
> disconnect and query using the AT commands below.
>
> I however don't get any network. I have patched cdc_ncm with:
>
> 	/* Huawei NCM devices disguised as vendor specific */
> 	{ USB_VENDOR_AND_INTERFACE_INFO(0x12d1, 0xff, 0x02, 0x16),
> 	  .driver_info = (unsigned long)&wwan_info,
> 	},
> 	{ USB_VENDOR_AND_INTERFACE_INFO(0x12d1, 0xff, 0x02, 0x46),
> 	  .driver_info = (unsigned long)&wwan_info,
> 	},
>
> Any recommendations on what to debug / configure?

Verify that you have built and installed the patched cdc_ncm by
e.g. doing "modinfo cdc_ncm".  You should see something like this:

filename:       /lib/modules/3.7.0-rc3+/kernel/drivers/net/usb/cdc_ncm.ko
license:        Dual BSD/GPL
description:    USB CDC NCM host driver
author:         Hans Petter Selasky
alias:          usb:v*p*d*dc*dsc*dp*ic02isc0Dip00in*
alias:          usb:v12D1p*d*dc*dsc*dp*icFFisc02ip46in*
alias:          usb:v12D1p*d*dc*dsc*dp*icFFisc02ip16in*
alias:          usb:v0930p*d*dc*dsc*dp*ic02isc0Dip00in*
alias:          usb:v413Cp*d*dc*dsc*dp*ic02isc0Dip00in*
alias:          usb:v0BDBp*d*dc*dsc*dp*ic02isc0Dip00in*
depends:        usbnet,usbcore
vermagic:       3.7.0-rc3+ SMP mod_unload modversions 


The interesting part is of course the two aliases with 12D1.  You can do a

  grep . /sys/bus/usb/devices/*/modalias

and verify that the "usb:v12D1p*d*dc*dsc*dp*icFFisc02ip16in*" one does
in fact match the network function on your modem.  Hmm, is there some
smart shell utility which will do glob matching against a text file?

Anything interesting in the logs if you load cdc_ncm manually?


> I can help out with testing an updated ModemManager as well I you
> decide to do that.

Did you try the "AT+CLAC" command and send the result of that to
Aleksander?



Bjørn