Re: Re:Re: about ppp0 and Networkmanager

[Dan Williams <dcbw redhat com>]

On Sun, 2009-09-20 at 23:41 +0800, tommy.hong wrote:
> hi,dan!i have tested nm0.7.1 in my ARM11 board,use usbserial driver,it
> can 
> probe 3g modem and can connect 3G network successfully!
> But it connect successfully the first time ,init modem timeout the
> next time ,unless reinsert 3g wirless card and intilialize !
> I have found that it caused by havn't ATH before reconnect!

Could be the case, yeah.  So to fix that, we want to pass the reason
code to nm_device_deactivate_quickly() from nm_device_deactivate() and
let the subclasses handle it appropriately.  We do this so that we can
distinguish between a manual disconnection, and an unplug.  On unplug,
we can't try to talk to the modem because it's not there anymore.  We
can use the reason code to detect that, it will be
NM_DEVICE_STATE_REASON_REMOVED when the device was unplugged.

If it's not NM_DEVICE_STATE_REASON_REMOVED, then we can flash the device
to bring it into command mode, and issue the ATH, then continue.

Any chance you could try to create that patch?  Let me know if you have
any questions.

Dan

> 
> 
> 
> 
> 
> 在2009-09-20 22:36:32，"Dan Williams" <dcbw redhat com> 写道：
> >On Thu, 2009-09-10 at 17:32 +0800, tommy tommy wrote:
> >> hi,Dear Dan!
> >> 
> >> Now i met a problem with usb evdo card!
> >> 
> >> When i insmod usbserial with vendor id and product id,pppd connect OK
> >> with ttyUSB1 and can access internet with ppp0!
> >> 
> >> But I want to use Networkmanager with ppp,because ppp0 isn't a
> >> standard platform device ,it is kernel virtual net
> >> (/sys/device/virtual/net/ppp0),causes HAL can't know it is a real
> >> network,Networkmanager depend on HAL!
> >> 
> >> Serveral days ago i have fix marvell8686 driver kernel hotplug
> >> bug,does usbserial driver miss similiar issue ?
> >
> >NM 0.7.1 and later probe modems dynamically to figure out their
> >capabilities.  But it doesn't probe devices driven by 'usbserial' since
> >they are not generally supposed to be 3G modems.
> >
> >Your 3G modem USB ids should be added to 'option' (for Option, ZTE,
> >Huawei, Novatel, etc devices) or 'sierra' (for Sierra devices), because
> >those drivers enable the high-speed communication that 3G devices are
> >used for.
> >
> >usbserial is not built for high-speed communication and thus your
> >transfer rates will be quite limited.  If you add your modems IDs to a
> >known mobile broadband driver (like 'option') it should get picked up by
> >NM.
> >
> >Dan
> >
> >
> >> Thanks all!
> >> 
> >> Platform :ARM11
> >> Linux kernel version:2.6.24.2
> >> 
> >> Tommy China
> >
> 
> 
> 
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