netdev - Re: [PATCH] spidernet: Fix problem sending IP fragments

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Message-ID: <Pine.LNX.4.62.0703120927570.15144@pademelon.sonytel.be>
Date:	Mon, 12 Mar 2007 09:28:59 +0100 (CET)
From:	Geert Uytterhoeven <Geert.Uytterhoeven@...ycom.com>
To:	Norbert Eicker <n.eicker@...juelich.de>
cc:	Jeff Garzik <jgarzik@...ox.com>, linuxppc-dev@...abs.org,
	netdev@...r.kernel.org
Subject: Re: [PATCH] spidernet: Fix problem sending IP fragments

On Sat, 10 Mar 2007, Norbert Eicker wrote:
> On Friday, 9. March 2007 17:53, Jeff Garzik wrote:
> > Linas Vepstas wrote:
> > > Please apply. The rather long patch description is from the submitter,
> > > Norbert Eicker, I don't know if that's alright, or if I should ask to
> > > have it trimmed.
> > >
> > > Thanks,
> > > --linas
> > >
> > > From: Norbert Eicker <n.eicker@...juelich.de>
> > >
> > >
> > > Signed-off-by: Norbert Eicker <n.eicker@...juelich.de>
> > > Signed-off-by: Linas Vepstas <linas@...tin.ibm.com>
> >
> > are you sure it can't send out fragmented IP frames?  what's really
> > going on here?
> 
> Pretty sure that fragmented IP frames are not send out. Here's a small test 
> using ttcp and tcpdump reproducing the problem (I assume a MTU of 1500):

Hence if I understand that correctly, NFS over UDP doesn't work at all as NFS
uses 8 KiB UDP packets by default?

Gr{oetje,eeting}s,

						Geert

--
Geert Uytterhoeven -- Sony Network and Software Technology Center Europe (NSCE)
Geert.Uytterhoeven@...ycom.com ------- The Corporate Village, Da Vincilaan 7-D1
Voice +32-2-7008453 Fax +32-2-7008622 ---------------- B-1935 Zaventem, Belgium
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