Re: [PATCH] Fix TCP/UDP checksums on the Broadcom SB-1

[Ralf Baechle <ralf@linux-mips.org>]

On Tue, Sep 20, 2005 at 01:00:04PM +0200, Matej Kupljen wrote:

> > > This caused incorrect checksums in some UDP packets for NFS root.  The
> > > problem was mild when using a 10.0.1.x IP address, but severe when
> > > using 192.168.1.x.
> > 
> >  Ah!  So *that* is the reason for the absolutely abysmal NFS performance 
> > of the SWARM with 2.6!  I have had no time to track it down -- thanks a 
> > lot!
> 
> Is this for MIPS64 only?
> Because, on dbau1200 we also have poor NFS performance :-(

It's for 64-bit kernels only.  Note the difference, I didn't say MIPS64.

Also, since this bug did result in an operation that has undefined
behaviour it likely may will only have impacted some 64-bit processors -
such as the SB1 - but others may have been unaffected.

  Ralf