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From: Hans Petter Selasky <hselasky@c2i.net>
To: Andrew Thompson <thompsa@freebsd.org>
Date: Sun, 1 Feb 2009 11:23:46 +0100
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Cc: freebsd-usb@freebsd.org
Subject: Re: USB2 patches
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Hi Andrew,

First of all thanks for helping out. I will spend some time now to go through 
your changes.

One thing about the taskqueue. How does it work? I mean, if multiple events 
gets queued on the same handler, how will the events get executed? In 
parallell, in serial. I never fully understood that.

--HPS

On Sunday 01 February 2009, Andrew Thompson wrote:
> Hi,
>
>
> I have several patches in my svn user branch that I would like to see
> committed to HEAD. Some of these change the usb2 core code so I am
> interested in feedback or shootdowns. I am right behind the change to
> USB2 and this is an effort to help.
>
> The patch can be found here,
>  http://people.freebsd.org/~thompsa/usb_head1.diff
>  73 files changed, 9229 insertions(+), 13261 deletions(-)
>
> but its rather large so it may be easier to look at the various changes
> via the svn web interface.
>
> http://svn.freebsd.org/viewvc/base/user/thompsa/usb/
>
>
> r187750
>   http://svn.freebsd.org/viewvc/base?view=revision&revision=187750
>
>   Change over to using taskqueue(9) instead of hand rolled threads and
>   the config_td system. This removes the config_td code and makes the
>   API much simpler to use.
>
> r187751, r187752, r187753, r187754, r187755, r187756
>   http://svn.freebsd.org/viewvc/base?view=revision&revision=187751
>
>   Change over to usb2_proc w/ taskqueues for the usb2/ethernet,
>   usb2/serial and usb2/wlan code.
>
> r187965
>   http://svn.freebsd.org/viewvc/base?view=revision&revision=187965
>
>   Move most of the ifnet logic into the usb2_ethernet module, this
> includes, - make all usb ethernet interfaces named ue%d
>    - handle all threading in usb2_ethernet
>    - provide default ioctl handler
>    - handle mbuf rx
>    - provide locked callbacks for init,start,stop,etc
>
>   The drivers are not much more than data pushers now.
>
>
> regards,
> Andrew