Hi Sarah,
Thanks for your kind reply.
I did homework and I think we do NOT need to change anything in usbmon
(drivers/usb/mon/*) code to make it work with USB3.0
By design, usbmon hooks its functions into hcd.c file. So that hook is
in "USB Host Controller Driver framework".
Call sequence would be something like,
USB Class Specific Driver
----> USB core driver
----> USB HCD framework (plugged into core)
|----> Also submit urb to usbmon
|----> enqueue URB to HCD driver or root hub
As evidently, urbs are given to usbmon from a generic layer of hcds and
so it doesnt matter what HCD as a hardware we are using beneath.
So, I feel like we do not need any code change to usbmon. This should
directly work for USB3.0 capturing.
I needed to go and look at the code beforehand ;)
--
Thanks, Viral Mehta, Embedded Software Engineer, www.einfochips.com
I CCed Pete, too if I missed something and needs some comment here.
Sarah Sharp wrote:
On Tue, Jun 09, 2009 at 10:42:58AM +0530, Viral Mehta wrote:
Hi Sarah,
I am planning to incorporate code changes in usbmon (USB monitoring tool
that comes with kernel source) to support USB3.0 capturing.
I am following all code changes that you recently submitted to mainline
kernel.
The unfortunate thing is I do not have any access to any USB3.0 devices.
I am just doing it as self-learning exercise since I am very much into
USB3.0
Will it be possible for you to help me in anyway to get that code tested
if I happen to submit it to you?
Sure, you should send the code to the linux-usb mailing list as an RFC,
and I'll test it with the USB devices I have. I only have bulk and
control transfers working, so I won't be able to test other transfer
types. But it would be very useful to have USBMon working for USB 3.0
devices.
Or you already have those changes but yet not submitted ? In that case,
I may define some other exercise for myself.
Any help would be more than welcome.
No, I haven't made changes to the USBMon for USB 3.0. I haven't really
tried using it with USB 3.0 devices, so I don't know if there's any
changes necessary. But I will certainly test any patches you send me.
Sarah Sharp
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