newer broadcom chip support

On Sun, Dec 17, 2006 at 01:15:48PM -0500, Thor Lancelot
Simon wrote:
> On Sun, Dec 17, 2006 at 10:48:17AM +0100, Quentin
Garnier wrote:
> > On Sat, Dec 16, 2006 at 06:46:16PM +0100, Manuel
Bouyer wrote:
> > > Hi,
> > > I have a new server which has a new broadcom
chip (5708), not supported by
> > > NetBSD. What is the best approach; porting
the bce(4) driver from FreeBSD or
> > > trying to integrate support to our bge(4) ?
Has someone already looked at
> > > this ?
> > 
> > I have a port of OpenBSD's bnx(4) (which is a port
of FreeBSD's bce(4)).
> 
> I know the OpenBSD manual page says that bnx/bce can do
full TCP offload;
> I'm not sure I believe that (or that we'd want it if it
actually could).

I asked the author about TSO, he replied that he didn't
think FreeBSD
supported it, so it's not in the driver anyway.

> But do you know if it can do header splitting?  The
newer Intel cards can,
> and using it gives a significant performance boost
under Linux by allowing
> zero-copy receive to userspace.

The author of the driver was very nice and replied very
quickly to my
questions;  you'd better ask him directly.

-- 
Quentin Garnier - cubecubidou.net - cubeNetBSD.org
"You could have made it, spitting out benchmarks
Owe it to yourself not to fail"
Amplifico, Spitting Out Benchmarks, Hometakes Vol. 2, 2005.