Overview

This is a simple shellscript to make the internet connection with your QMI (Qualcomm MSM Interface) supported wwan device like Sierra Wireless Inc. Gobi 3000. QMI supported devices are listed in the source of Linux kernel (check drivers/net/usb/qmi_wwan.c with your device id). These devices are also listed at http://www.freedesktop.org/wiki/Software/ModemManager/SupportedDevices/ but not the all devices there.

Type following command to start, stop and restart the internet connection, and check your device status.

% sudo ./qmi_setup.sh start
Password: 
[/dev/cdc-wdm0] Operating mode set successfully
Loading profile...
    APN: mopera.net
Starting network with 'qmicli -d /dev/cdc-wdm0 --wds-start-network=mopera.net  --client-no-release-cid'...
Saving state... (CID: 14)
Saving state... (PDH: 19777600)
Network started successfully
dhcpcd[23821]: version 5.6.4 starting
dhcpcd[23821]: wwp0s29u1u4: sending IPv6 Router Solicitation
dhcpcd[23821]: wwp0s29u1u4: broadcasting for a lease
dhcpcd[23821]: wwp0s29u1u4: offered 1.67.135.xx from 1.67.135.xx
dhcpcd[23821]: wwp0s29u1u4: acknowledged 1.67.135.xx from 1.67.135.xx
dhcpcd[23821]: wwp0s29u1u4: checking for 1.67.135.xx
dhcpcd[23821]: wwp0s29u1u4: sending IPv6 Router Solicitation
dhcpcd[23821]: wwp0s29u1u4: leased 1.67.135.xx for 7200 seconds
dhcpcd[23821]: forked to background, child pid 23863

% sudo ./qmi_setup.sh status
Password: 
Loading profile...
    APN: mopera.net
Loading previous state...
    Previous CID: 14
    Previous PDH: 19777600
Getting status with 'qmicli -d /dev/cdc-wdm0 --wds-get-packet-service-status --client-cid=14 --client-no-release-cid'...
Status: connected
Signal strength is Good (-79 dBm)

% sudo ./qmi_setup.sh stop
Password: 
Loading profile...
    APN: mopera.net
Loading previous state...
    Previous CID: 14
    Previous PDH: 19777600
Stopping network with 'qmicli -d /dev/cdc-wdm0 --wds-stop-network=19777600 --client-cid=14'...
Network stopped successfully
Clearing state...

$ sudo ./qmi_setup.sh status
Password: 
Loading profile...
APN: mopera.net
Getting status with 'qmicli -d /dev/cdc-wdm0 --wds-get-packet-service-status '...
Status: disconnected
Signal strength is Good (-79 dBm)

Tested environment

• ThinkPad X220 (4286-CTO)
• Gentoo/Linux, Linux Kernel 3.9.6
• Sierra Wireless, Inc. Gobi 3000 wireless wan module (FRU 60Y3257) I recommend to check if your wwan module works fine for your mobile broadband provider with Windows especially if you imported the device from other country. You may have to initialize your device for your region.
• NTT Docomo UIM card (Xi LTE SIM)

Requirements

• You have to prepare the kernel modules
  • qmi_wwan (CONFIG_USB_NET_QMI_WWAN)
  • qcserial (CONFIG_USB_SERIAL_QUALCOMM)
• QMI commands qmicli and qmi-network cmmand are required. Install them.
• APN settings APN settings are written to /etc/qmi-network.conf. In my environment, I put only a line.

  % cat /etc/qmi-network.conf
  APN=mopera.net
      

For more detailed information

You can see the script source or ask Google.