Re: hw tcp v4 csum failed on 2.4.23-rc2 with e100

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On Sun, Nov 23, 2003 at 09:12:23PM +0200, Felix Radensky wrote:
> Hi, Rask
> 
> Rask Ingemann Lambertsen wrote:
> 
> >It could be neither. It just means that the checksum in the packet was in
> >disagreement (for lack of better word) with the checksum calculated by the
> >hardware. If I read the tcp_ipv4 code right, then all it takes for that
> >message to be printed is a packet with an incorrect checksum to be received
> >by a device which supports hardware checksum calculation.
[cut]
> It's a plain IP over Ethernet, WWW traffic.

Are you receiving data from a WWW server? If so, what is the URL? I should
be getting the same error when receiving from it since I use an i82559 for
my Internet connection.

> >What does "netstat -s | grep -F -e 'bad segments received'" give (with and
> >without hardware checksumming)?
> >
> I get nonzero value with and without  hardware checksumming.

What I should have asked for, is: Do they increase?

I think the problem here is with the sender of those packets, not with your
box.

-- 
Regards,
Rask Ingemann Lambertsen
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