From: Andrea Arcangeli <andrea@suse.de>
To: linux-kernel@vger.kernel.org
Subject: Re: 2.4.19pre10aa3
Date: Thu, 20 Jun 2002 15:19:51 +0200 [thread overview]
Message-ID: <20020620131951.GD10718@dualathlon.random> (raw)
In-Reply-To: <20020620114459.GA13532@spylog.ru>
On Thu, Jun 20, 2002 at 03:44:59PM +0400, Andrey Nekrasov wrote:
> Hello Andrea Arcangeli,
>
>
> Kernel 2.4.19pre10aa3 + hidden_arp (from LVS)
>
>
>
> ...
> Intel(R) PRO/100 Fast Ethernet Adapter - Loadable driver, ver 1.8.38
> Copyright (c) 2002 Intel Corporation
>
> eth0: Intel(R) 8255x-based Ethernet Adapter
> Mem:0xfb101000 IRQ:18 Speed:100 Mbps Dx:Full
> Hardware receive checksums enabled
> cpu cycle saver enabled
> ...
>
> ...
> eth0 e100_wait_exec_cmd: Wait failed.
> hw tcp v4 csum failed
> hw tcp v4 csum failed
> hw tcp v4 csum failed
> hw tcp v4 csum failed
> hw tcp v4 csum failed
> hw tcp v4 csum failed
> hw tcp v4 csum failed
> ...
>
>
> Than this message is caused? It something serious also can be problems?
probably a driver issue with hw checksum. btw interestingly the stack
computes the cksum by hand for every tcp incoming packet (unless
ip_summed is set by the driver to CHECKSUM_UNNECESSARY), this is how it
noticed the hw checksum was wrong. I guess it's either an e100 driver
issue, or an hardware issue. Maybe it's setting DF_CSUM_OFFLOAD for your
card despite your hardware doesn't support that feature, or maybe
there's something wrong in the logic that sets the skb->csum.
Andrea
next prev parent reply other threads:[~2002-06-20 13:18 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-06-20 5:59 2.4.19pre10aa3 Andrea Arcangeli
2002-06-20 6:04 ` 2.4.19pre10aa3 David S. Miller
2002-06-20 6:30 ` 2.4.19pre10aa3 Andrea Arcangeli
2002-06-20 11:44 ` 2.4.19pre10aa3 Andrey Nekrasov
2002-06-20 13:19 ` Andrea Arcangeli [this message]
2002-06-20 17:03 ` 2.4.19pre10aa3 Andrea Arcangeli
2002-06-20 13:05 ` 2.4.19pre10aa3 J.A. Magallon
2002-06-20 13:32 ` 2.4.19pre10aa3 Andrea Arcangeli
2002-06-20 14:07 ` 2.4.19pre10aa3 Andrea Arcangeli
2002-06-20 14:05 ` 2.4.19pre10aa3 Ingo Molnar
2002-06-20 14:40 ` 2.4.19pre10aa3 Andrea Arcangeli
2002-06-20 14:44 ` 2.4.19pre10aa3 Andrea Arcangeli
2002-06-20 15:40 ` 2.4.19pre10aa3 Heinz Diehl
2002-06-20 22:48 ` 2.4.19pre10aa3 J.A. Magallon
2002-06-21 4:31 ` 2.4.19pre10aa3 Andrea Arcangeli
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