Re: [Libusb-win32-devel] Linux USB sniffer app ?

[Xiaofan C. <xia...@gm...>]

On 12/30/06, linuxguy <lin...@gm...> wrote:
> Can someone recommend a good USB sniffer application for Linux ?
> Something like ethereal (wireshark now...) except for USB instead of
> Ethernet.
>

Try usbmon. You need to recompile your kernel (enable debugfs
and build usbmon as module). I do not think it is as mature as the
USB sniffers under Windows.

There are some documentations about usbmon.
http://people.redhat.com/zaitcev/linux/index.html

>From Linux 2.19.1 Documentations/usb/usbmon.txt:
*******************************
* Introduction

The name "usbmon" in lowercase refers to a facility in kernel which is
used to collect traces of I/O on the USB bus. This function is analogous
to a packet socket used by network monitoring tools such as tcpdump(1)
or Ethereal. Similarly, it is expected that a tool such as usbdump or
USBMon (with uppercase letters) is used to examine raw traces produced
by usbmon.

The usbmon reports requests made by peripheral-specific drivers to Host
Controller Drivers (HCD). So, if HCD is buggy, the traces reported by
usbmon may not correspond to bus transactions precisely. This is the same
situation as with tcpdump.
...
* Raw binary format and API

TBD
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