USB network interface driver for Samsung Kalmia based USB LTE modems like GT-B3730 / GT-B3710 / GT-B3740
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option
.gitignore
Makefile
README
build.sh
chat.sh
chatscript.txt
chatscript_nonlte.txt
connect_lte.sh
connect_nonlte.sh

README

**********************
How to get the sources
**********************

Kernel 3.0+:
------------
Get kalmia.c from:
https://github.com/mkotsbak/linux-2.6/blob/Samsung_kalmia_driver-3.0/drivers/net/usb/kalmia.c

Option.c is already patched in that version.

Or the whole kernel from https://github.com/mkotsbak/linux-2.6/tree/Samsung_kalmia_driver-mainline

Kernel 2.6.38 (Ubuntu Natty):
-----------------------------
Get kalmia.c from:
https://github.com/mkotsbak/linux-2.6/blob/Samsung_kalmia_driver-2.6.38/drivers/net/usb/kalmia.c

Get option.c from (latest stable 2.6.38.x): http://git.kernel.org/?p=linux/kernel/git/stable/linux-2.6.38.y.git;a=blob_plain;f=drivers/usb/serial/option.c;hb=HEAD

Or the whole kernel from https://github.com/mkotsbak/linux-2.6/tree/Samsung_kalmia_driver-2.6.38

Kernel 2.6.35 (Ubuntu Maverick):
-------------------------------
Get kalmia.c from:
https://github.com/mkotsbak/linux-2.6/blob/Samsung_kalmia_driver-2.6.35/drivers/net/usb/kalmia.c

Get option.c from 
https://github.com/mkotsbak/linux-2.6/blob/Samsung_kalmia_driver-2.6.35/drivers/usb/serial/option.c

Or the whole kernel from https://github.com/mkotsbak/linux-2.6/tree/Samsung_kalmia_driver-2.6.35

Kernel 2.6.32 (Ubuntu 10.04 LTS):
---------------------------------
Get kalmia.c from:
https://github.com/mkotsbak/linux-2.6/blob/Samsung_kalmia_driver/drivers/net/usb/kalmia.c

Get option.c from 
https://github.com/mkotsbak/linux-2.6/blob/Samsung_kalmia_driver/drivers/usb/serial/option.c

Or the whole kernel from https://github.com/mkotsbak/linux-2.6/tree/Samsung_kalmia_driver

Submitted patches for option.c are available as option_1.patch and option_2.patch in "option" subdir.

************
How to build
************

In root dir:

* sh build.sh

In option directory:

* sh build.sh

****************
How to configure
****************

* In /etc/usb_modeswitch.d/04e8:689a, ensure this line is enabled:

  NoDriverLoading=1

There should be no rule for product="6889".

* Set up wwan0 as dhcp interface. E.g. in Debian/Ubuntu, add this line to "/etc/network/interfaces":

iface wwan0 inet dhcp

**************
How to connect
**************

* sudo modprobe option && sudo rmmod option (to get module deps)
* sudo insmod ./option/option.ko
* Connect modem
* Run connect_lte.sh

or:

* sudo modprobe usbnet
* sudo insmod ./kalmia.ko
* sh chat.sh
* Monitor connection using: "minicom -o -D /dev/ttyUSB0" (NB! this seems to be required, else the modem stops)
* sudo ifup wwan0

**************
How to reconnect
**************

* sudo ifdown wwan0
* Unplug and plug modem (bug in firmware, "ATE1" does not work. Same with windows driver).
* If /var/log/messages indicate error in driver, rmmod kalmia, then insmod again.
* sh chat.sh
* sudo ifup wwan0