Re: [PATCH 0/3] New firewire stack

Benjamin Herrenschmidt
2006-12-05T05:42:56Z

On Tue, 2006-12-05 at 00:22 -0500, Kristian Høgsberg wrote:
> Hi,
>
> I'm announcing an alternative firewire stack that I've been working on
> the last few weeks. I'm aiming to implement feature parity with the
> current firewire stack, but not necessarily interface compatibility.
> For now, I have the low-level OHCI driver done, the mid-level
> transaction logic done, and the SBP-2 (storage) driver is basically
> done. What's missing is a streaming interface (in progress) to allow
> reception and transmission of isochronous data and a userspace
> interface for controlling devices (much like raw1394 or libusb for
> usb). I'm working out of this git repository:

A very very very quick look at the code shows that:

- It looks nice / clear
- It's horribly broken in at least two area :

DO NOT USE BITFIELDS FOR DATA ON THE WIRE !!!

and

Where do you handle endianness ? (no need to shout for
that one).

(Or in general, do not use bitfields period ....)

bitfields format is not guaranteed, and is not endian consistent.

Ben.