Hi all, I am considering writing a gadget device driver which would act as both a USB host and device, for use as a USB sniffer. My intention is to use a simple, low cost ARM development board like the Olimex SAM9-L9260, which has both usb host and device capabilities. I have seen this idea proposed as a Beagleboard SoC project (http://elinux.org/BeagleBoard/Ideas-2009#USB_sniffer), but otherwise have not found any evidence that someone else is actively working on such a capability. I have driver and some USB experience, so am happy to just get hacking and see how it goes, but I am keen to avoid duplicating effort if something similar has been attempted already. Can anyone provide any thoughts, links or ideas related to this before I start? I'm guessing I will need to start with skeleton USB host and gadget drivers, and the host driver will have to talk to the gadget driver such that the gadget mimics the vendor/product IDs and EP topology of the device under test. Then URBs in each direction will require forwarding in an efficient manner such that the USB data is fairly transparently "passed through" the driver/drivers. For the actual sniffing, I just expect to use the usbmon module. Any thoughts appreciated! Thanks, Steve Hardy -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
