[ixp1200] forwarding packet to host kernel

[Scott Karlin]

The PCI bus transfers in our SOSP paper were from the IXP1200
evaluation board (no non-transparent bridge) to the Pentium.
The StrongARM was not running Linux; however, the Pentium was
running Linux.

For my thesis I did make measurements using a PowerPC based
line card (RAMiX PMC694) which has a 21554 non-transparent
bridge.  The is the 32-bit version of the bridge on the
Bridalveil board.  If the Bridalveil board were installed in
a 32-bit PCI system, I would expect the behavior of the
bridges to be similar.  The PMC694 code (with 21554 code) and
links to papers are here: http://www.cs.princeton.edu/nsg/vera/

Scott


On Wed, Jan 29, 2003 at 02:32:19AM -0700, Abhijeet Joglekar wrote:
> Andrew,
> 
> The Princeton SOSP paper, "Building a Robust software-based
> router using NPs" has some measurements for forwarding rate
> from the IXP to the host PC. But this system is not linux based,
> if that is what you are looking for.
> 
> There was some discussion regarding this on this mailing list
> sometime earlier which you can get in the archives.
> 
> Also, I think Georgia Tech group had presented some numbers
> at the IXA 2002 workshop on moving packets between the IXP and host,
> I think.
> 
> -- abhijeet
> 
> On Tue, 28 Jan 2003, Andrew Putra Jauri wrote:
> 
> > Hi,
> >
> > I was wondering if anyone has looked into passing the
> > packet from ixp board from and to the host linux kernel through
> > the pci bridge? I know it seems ridiculous since that
> > will waste all the resources we have in the ixp board,
> > anyway I'm just curious.
> >
> >
> > Andrew Putra Jauri
> > College of Engineering and Computer Science
> > Portland State University
> >