Quoting "Luis R. Rodriguez" <mcgrof@xxxxxxxxx>:
Ok I added cdc_ether.c and it compiles now if you use
compat-wireless.git and wireles-testing.git to pull. I tested this
only on 2.6.24 though, 2.6.22 compile may be broken now. We'll have
to test that.
OK so regardless I ran into issues with a 13b1:0026 Linksys
(WUSB54GSC). Either I'm really not understanding this driver well or
it wasn't tested well. I take it its the first... The first oops I
run into is with access to the net_device on rndis_wext_bind(). I fixed
that (patch at the bottom) but then I run into a bug on
generic_rndis_bind() when accessing the net_device ....
I just didn't get that as I am sure to be setting it.
I then note that somehow generic_rndis_bind() is being run first
than rndis_wext_bind()! How is this happening?
Ok, I'll try to explain usbnet framework. usbnet framework allows usb
netdevices to share common code. Drivers depend depend on usbnet.c as
tree:
usbnet
|
|\------------cdc_ether-----------rndis_host
| | |
drivers drivers that drivers that
that only need cdc_ether need rndis_host
need usbnet (and usbnet) functions (rndis_wlan)
functions functions
Drivers depending on usbnet are called minidriver in usbnet framework. Each
minidriver has list of devices supported and points probe function to
usbnet:usbnet_probe(). If minidriver needs quirks over usbnet, this
done in bind function. rndis_wlan, rndis_host and cdc_ether all have
own modified bind function. So when rndis_wlan is loaded,
usbnet:usbnet_probe() calls rndis_wext:rndis_wext_bind() calls
rndis_host:generic_rndis_bind() which finally calls
cdc_ether:usbnet_generic_cdc_bind(). Netdevice (and struct usbnet) is
allocated in usbnet:usbnet_probe().
So usbnet.c should be included to compat-wireless, but modified
usbnet.c would cause problems to other minidriver that aren't included
in compat-wireless. Maybe this could be worked around with compat.diff
and #ifdef's (?)
Because there isn't standard way to detect wireless RNDIS device from
non-wireless, rndis_host and rndis_wext both have same usb_device_id.
When rndis_host is loaded on wireless device,
rndis_host:generic_rndis_bind() fails and lets rndis_wlan probe next.
If rndis_wlan is loaded on non-wireless device,
rndis_host:generic_rndis_bind() fails and lets rndis_host be probed.
Detection is done with checking device media type with RNDIS command.
- Jussi
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