USB ethernet adapter support

[Roland Smith]

On Fri, Aug 29, 2014 at 11:34:02PM -0700, Ross Penner wrote:
> I have a USB ethernet adapter that doesn't seem to work out of the box
> on my 10.0 system. I'm hoping somebody can help me figure out what
> driver to load, or if there even is a driver available.
> 
> When I plug the device into the FreeBSD machine the only line on dmesg
> is:
> ugen4.2: <Linksys> at usbus4
> 
> It does work with my Ubuntu 14.04 system. I've added the dmesg output in
> the hopes that it will be helpful:
> [137513.415146] usb 1-1.5: new high-speed USB device number 6 using
> ehci-pci
> [137513.508489] usb 1-1.5: New USB device found, idVendor=13b1,
> idProduct=0041
> [137513.508493] usb 1-1.5: New USB device strings: Mfr=1, Product=2,
> SerialNumber=6
> [137513.508494] usb 1-1.5: Product: Linksys USB3GIGV1
> [137513.508495] usb 1-1.5: Manufacturer: Linksys
> [137513.508497] usb 1-1.5: SerialNumber: 000001000000
> [137513.528939] cdc_ether 1-1.5:2.0 eth1: register 'cdc_ether' at
> usb-0000:00:1a.0-1.5, CDC Ethernet Device, b4:75:0e:8f:5e:90
> [137513.528960] usbcore: registered new interface driver cdc_ether
> [137518.015729] IPv6: ADDRCONF(NETDEV_UP): eth1: link is not ready

You might get it to work with cdce(4). From the manual page:

    Many USB devices notoriously fail to report their class and interfaces
    correctly.  Undetected products might work flawlessly when their vendor
    and product IDs are added to the driver manually.

You will have to patch the files /usr/src/sys/dev/usb/usbdevs and
/usr/src/sys/dev/usb/net/if_cdce.c to add this device. Everything *between*
the lines starting with “+++++” is the patch;

+++++ patch for /usr/src/sys/dev/usb/usbdevs +++++
--- usbdevs.orig	2014-08-30 10:40:43.000000000 +0200
+++ usbdevs	2014-08-30 10:42:58.000000000 +0200
@@ -1402,6 +1402,7 @@
 product CISCOLINKSYS WUSB54GR	0x0023	WUSB54GR
 product CISCOLINKSYS WUSBF54G	0x0024	WUSBF54G
 product CISCOLINKSYS AE1000	0x002f	AE1000
+product CISCOLINKSYS USB3GIGV	0x0041	USB3GIGV
 product CISCOLINKSYS2 RT3070	0x4001	RT3070
 product CISCOLINKSYS3 RT3070	0x0101	RT3070
+++++ patch for /usr/src/sys/dev/usb/usbdevs +++++

Save this patch to a file (e.g. usbdevs.diff) and use the patch(1) utility to apply it;

    # cd /usr/src/sys/dev/usb/
    # patch </path/to/patch/usbdevs.diff

Then you'll have to patch /usr/src/sys/dev/usb/net/if_cdce.c to do the same;

+++++ patch for /usr/src/sys/dev/usb/net/if_cdce.c +++++
--- if_cdce.c.orig	2014-08-30 11:07:02.000000000 +0200
+++ if_cdce.c	2014-08-30 11:09:56.000000000 +0200
@@ -277,6 +277,7 @@
 	{USB_VPI(USB_VENDOR_SHARP, USB_PRODUCT_SHARP_SLA300, CDCE_FLAG_ZAURUS | CDCE_FLAG_NO_UNION)},
 	{USB_VPI(USB_VENDOR_SHARP, USB_PRODUCT_SHARP_SLC700, CDCE_FLAG_ZAURUS | CDCE_FLAG_NO_UNION)},
 	{USB_VPI(USB_VENDOR_SHARP, USB_PRODUCT_SHARP_SLC750, CDCE_FLAG_ZAURUS | CDCE_FLAG_NO_UNION)},
+	{USB_VPI(USB_VENDOR_CISCOLINKSYS, USB_PRODUCT_CISCOLINKSYS_USB3GIGV, CDCE_FLAG_NO_UNION)},
 };
 
 static const STRUCT_USB_DUAL_ID cdce_dual_devs[] = {
+++++ patch for /usr/src/sys/dev/usb/net/if_cdce.c +++++

Note that these patches were prepared on a 10-STABLE system; the files might
differ slightly from those on 10.0-RELEASE. If applying the patches fails,
edit the files by hand.

Now you have to rebuild and install the cdce module;

    # cd /usr/src/sys/modules/usb/cdce
    # make
    # cp if_cdce.ko /boot/kernel/
    # make cleandir

If the old if_cdce module is loaded, unload it;

    # kldunload if_cdce.ko


IIRC, required modules are loaded automatically, but to be sure you can load
the module before plugging the device in;

    # kldload if_cdce.ko

Now plug in the device and see if it works. Note that I don't have access to
this hardware so I don't know if it works.

While I don't think this will crash your system, you never know. So make sure you
have up-to-date backups.


Roland
-- 
R.F.Smith                                   http://rsmith.home.xs4all.nl/
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