From: "\"Thomas B. Rücker\"" <dm8tbr@openpma.org>
To: "Stephen Hemminger" <shemminger@linux-foundation.org>,
"Philipp Gühring" <pg@futureware.at>,
netdev@vger.kernel.org
Subject: Re: UDP checksum broken since 2.6.18?
Date: Tue, 22 May 2007 23:33:30 +0000 [thread overview]
Message-ID: <46537DCA.7060603@openpma.org> (raw)
In-Reply-To: <20070522161217.20875c39@freepuppy>
Stephen Hemminger wrote:
> The packet passed to packet capture programs may not have a valid checksum
> if you have checksum offload configured on the device. What kind of hardware
> do you have on sender and receiver?
The c-snippet uses 127.x.x.x --> loopback
I think Philipp tested this on real NICs too.
I just proxied this information to this list because I don't have the
indepth knowledge about IP, UDP and the kernel. I had a Chat with Ralf
Baechle and he recommended sending a report to netdev@. Maybe Philipp
can give some more information. He discovered this.
Cheers
Thomas
next prev parent reply other threads:[~2007-05-22 23:33 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-05-22 21:47 UDP checksum broken since 2.6.18? "Thomas B. Rücker"
2007-05-22 23:12 ` Stephen Hemminger
2007-05-22 23:33 ` "Thomas B. Rücker" [this message]
2007-05-23 10:01 ` Herbert Xu
2007-05-23 10:33 ` "Thomas B. Rücker"
2007-05-23 11:50 ` Herbert Xu
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