Sean Bruno - Implementation of TARGET_MODE applications
Source: BSDCan - The Technical BSD Conference
Added: 25 May 2009
Tags: bsdcan, bsdcan2009, presentation, freebsd, firewire, sean bruno
Slides (72 Kb, 22 pages)
Implementation of TARGET_MODE applications
How we used TARGET_MODE in the kernel to create and
interesting product
This presentation will cover a real world implementation
of the TARGET_MODE infrastructure in the kernel
(stable/6). Topics to include: drivers used (isp,
aic7xxx, firewire). scsi_target userland code vs
kernel drivers missing drivers (4/8G isp support,
iSCSI target)
Target Mode describes a feature within certain
drivers that allows a FreeBSD system to emulate a
Target in the SCSI sense of the word. By recompiling
your kernel with this feature enabled, it permits
one to turn a FreeBSD system into an external hard
disk. This feature of the FreeBSD kernel provides
many interesting implementations and is highly
desirable to many organizations whom run FreeBSD
as their platform.
I have been tasked with the maintenance of a
proprietary target driver that interfaces with the
FreeBSD kernel to do offsite data mirroring at the
block level. This talk will discuss the implementation
of that kernel mode driver and the process my
employer went through to implement a robust and
flexible appliance.
Since I took over the implementation, we have
implemented U160 SCSI(via aic7xxx), 2G Fibre
Channel(via isp) and Firewire 400 (via sbp_targ).
Each driver has it's own subtleties and requirements.
I personally enhanced the existing Firewire target
driver and was able to get some interesting results.
I hope to demonstrate a functional Firewire 400/800
target and show how useful this application can be
for the embedded space. Also, I wish to demonstrate
the need for iSCSI. USB and 4/8G Fibre Channel
target implementations that use the TARGET_MODE
infrastructure that is currently in place to allow
others to expand their various interface types.
The presentation should consist of a high level
overview, followed by detailed implementation
instructions with regards to the Firewire implementation
and finish up with a hands-on demonstration with a
FreeBSD PC flipped into TARGET_MODE and a Mac.
Sean Bruno - Firewire BoF Plugfest
Source: BSDCan - The Technical BSD Conference
Added: 25 May 2009
Tags: bsdcan, bsdcan2009, presentation, firewire, plugfest, sean bruno
Slides (37 Kb, 1 page)
Firewire BoF Plugfest
Debugging and testing of Firewire products with FreeBSD
Come one come all to a Firewire plugfest. Let's
debug and test together and see if we can't knock
out some features and bugs.
A hands-on testing and debugging session of the
Firewire stack in FreeBSD.
Everyone who wishes to attend should bring their
Firewire devices, ext Drives and Cameras, and their
Laptops. I will be debugging and capturing data
points to enhance and improve features in the
Firewire stack.
We should be able to knock out quite a bunch of
bugs if folks can bring their various Firewire
devices along with their various PCs.
Even if your Firewire device works perfectly, bring
it by so it can be documented as supported by the
Firewire team!