From: "YOSHIFUJI Hideaki / 吉藤英明" <yoshfuji@linux-ipv6.org>
To: dada1@cosmosbay.com
Cc: webmaster@poweraudio.de, linux-kernel@vger.kernel.org,
netdev@vger.kernel.org, yoshfuji@linux-ipv6.org
Subject: Re: TCP_MD5 and Intel e1000
Date: Tue, 22 May 2007 18:36:47 +0900 (JST) [thread overview]
Message-ID: <20070522.183647.75785266.yoshfuji@linux-ipv6.org> (raw)
In-Reply-To: <20070522105738.f03cb83b.dada1@cosmosbay.com>
In article <20070522105738.f03cb83b.dada1@cosmosbay.com> (at Tue, 22 May 2007 10:57:38 +0200), Eric Dumazet <dada1@cosmosbay.com> says:
> > I have tried to set up quagga with tcp-md5 support from kernel. All seems ok
> > with a intel e100 NIC, but as i testetd with a intel e1000 NIC the tcp
> > packets have an invalid md5 digest.
> > If i run tcpdump on the mashine the packets are generated, it shows on the
> > outgoing interface invalid md5 digests.
> > Are there known issues about tcp-md5 and e1000 NICs?
:
> You could try "ethtool -K tx off", and/or other ethtool -K settings
Disabling offloading should help; currently tcp-md5 stack
blindly copy md5-signature from the first segment
which is not appropriate for rest of segments.
--yoshfuji
next prev parent reply other threads:[~2007-05-22 9:37 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-05-22 7:33 Marc Donner
2007-05-22 8:57 ` Eric Dumazet
2007-05-22 9:04 ` Dunc
2007-05-22 9:36 ` YOSHIFUJI Hideaki / 吉藤英明 [this message]
2007-05-22 10:14 ` David Miller
2007-05-22 10:33 ` Marc Donner
2007-06-12 21:39 ` David Miller
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