init is catching the kernel uevents. take a look at file devices.c in
system/init directory

hedwin

On Wed, Jul 6, 2011 at 3:15 PM, Ryan Barnett <ryanbarne...@gmail.com> wrote:

> Thanks! Running netcfg worked...that totally slipped my mind. Is there
> a way to automate this mapping besides having a service daemon script
> running looking for device to connect? Busybox is currently installed
> on the phone which includes mdev. mdev doesn't handle any of the
> device initialization since if I run "mdev -s" the phone will reboot.
> How does the Android kernel handle new device connections and how
> would I be able to have this USB ethernet device be automatically
> registered as a network interface?
>
> Thanks,
> -Ryan
>
> On Jul 1, 6:10 pm, Steve Modica <mod...@small-tree.com> wrote:
> > Did you run netcfg?
> >
> > Sent from my iPhone
> >
> > On Jul 1, 2011, at 4:16 PM, Ryan Barnett <ryanbarne...@gmail.com> wrote:
> >
> >
> >
> > > Hi,
> >
> > > I'm currently trying to get a USB ethernet device to appear as an
> > > interface on a rooted Motorola Atrix 4G from AT&T. The build number
> > > for this software is OLYFR_U4_1.2.6 with a kernel version of 2.6.32.9.
> > > I have the multimedia docking station (which has USB ports available)
> > > that Motorola has available for the phone.  The USB ethernet device
> > > that I'm plugging into the phone registers correctly on a laptop that
> > > is running Ubuntu 10.10 and uses the generic cdc_ether driver.
> >
> > > Information I have gather thus far is from dmesg in which the
> > > following shows up:
> >
> > > <6>[   77.227517] usb 1-1.3: new high speed USB device using tegra-
> > > ehci and address 4
> > > <6>[   77.276658] usb 1-1.3: New USB device found, idVendor=0525,
> > > idProduct=a4a2
> > > <6>[   77.276669] usb 1-1.3: New USB device strings: Mfr=1, Product=2,
> > > SerialNumber=0
> > > <6>[   77.276679] usb 1-1.3: Product: RNDIS/Ethernet Gadget
> > > <6>[   77.276687] usb 1-1.3: Manufacturer: Linux 2.6.33.7-rt29 with
> > > musb_hdrc
> > > <6>[   77.277117] usb 1-1.3: configuration #1 chosen from 2 choices
> > > <6>[   77.288180] usb1: register 'cdc_ether' at usb-tegra-ehci.0-1.3,
> > > CDC Ethernet Device, fa:b5:e8:b3:5c:34
> >
> > > Also I have found that the device is created at /sys/class/net/usb1
> > > which really maps to /sys/devices/platform/tegra-ehci.0/
> > > usb1/1-1/1-1.4/1-1.4:1.0/. If I do a cd into device (/sys/devices/
> > > platform/tegra-ehci.0/usb1/1-1/1-1.4/1-1.4:1.0/net/usb1) the following
> > > information is in uevent:
> >
> > > DEVTYPE=usb_interface
> > > DRIVER=cdc_ether
> > > DEVICE=/proc/bus/usb/001/021
> > > PRODUCT=525/a4a2/316
> > > TYPE=2/0/0
> > > INTERFACE=2/6/0
> > > MODALIAS=usb:v0525pA4A2d0316dc02dsc00dp00ic02isc06ip00
> >
> > > It seems that the cdc_ether driver is working correctly it is just
> > > that it is not being mapped as an interface (as far as ifconfig is
> > > concerned) since it doesn't appear if "busybox ifconfig" (or just
> > > ifconfig) is run. I know with most embedded systems mdev is used to do
> > > the mappings for the interface however it doesn't appear android uses
> > > mdev. My question is how does Android do the equilivant of mdev or
> > > mapping of interfaces? Or if that isn't pharse properly enough, how do
> > > I get this USB ethernet device to show up as an interface? I
> > > ultimately want these USB ethernet device to show up as "usb1" when I
> > > run "ifconfig" and right now it doesn't and I don't know how to get it
> > > to.
> >
> > > Thanks,
> > > -Ryan
> >
> > > --
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