答复: [MM] Huawei E1820 and NDISDUP

["Fangxiaozhi (Franko)" <fangxiaozhi huawei com>]

Dear Graham:
        I am sorry, E1820 and E3276 cannot support the NDISDUP feature through the PCUI port (AT port).

    In fact, the Huawei data card device can not support the NDISDUP feature through the PCUI port, unless it 
can expose the standard ECM port(bInterfaceClass==0x02, bInterfaceSubClass==0x06, bInterfaceProtocol==0x00).
        So please don't add the additional flags in the .rules, such as:
                SUBSYSTEMS=="usb", ATTRS{bInterfaceClass}=="02", 
ATTRS{bInterfaceSubClass}=="06",ATTRS{bInterfaceProtocol}=="ff", ENV{ID_MM_HUAWEI_NDISDUP_SUPPORTED}="1"

        It is not allowed.
        
        Hope this can help you.
        Thank you very much.

Best Regards,
Franko Fang
-----邮件原件-----
发件人: networkmanager-list [mailto:networkmanager-list-bounces gnome org] 代表 Graham Inggs
发送时间: 2013年6月4日 5:32
收件人: networkmanager-list gnome org
主题: [MM] Huawei E1820 and NDISDUP

My Huawei E1820 works fine with ModemManager in PPP mode.
I tried to get it to work with NDISDUP.  I added the following lines to 
plugins/huawei/77-mm-huawei-net-port-types.rules:

# Huawei E1820 firmware 11.831.03.00.00
SUBSYSTEMS=="usb", ATTRS{bInterfaceClass}=="02", 
ATTRS{bInterfaceSubClass}=="06",ATTRS{bInterfaceProtocol}=="ff", ENV{ID_MM_HUAWEI_NDISDUP_SUPPORTED}="1"

ModemManager was then able to connect using the AT^NDISDUP command.
I received an IP address and DNS settings, but I didn't seem to be getting any traffic over the connection.

I noticed the following line in the output of dmesg:

[13317.359566] cdc_ether 2-5:1.1 wwan0: CDC: unexpected notification 01!

I searched for this error and came across the following post:

http://linux.derkeiler.com/Newsgroups/comp.os.linux.hardware/2011-09/msg00042.html

Sure enough, changing the MAC address of wwan0 to 00:01:02:03:04:05 solved the problem!
I am using an Ubuntu 3.8 kernel.  The modem works fine with AT^NDISDUP in Windows.
Is this a problem with the cdc_ether driver, or something that could be fixed in ModemManager?
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