[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Message-Id: <E1Ib79E-0006CN-00@gondolin.me.apana.org.au>
Date: Fri, 28 Sep 2007 12:08:16 +0800
From: Herbert Xu <herbert@...dor.apana.org.au>
To: jonsmirl@...il.com (Jon Smirl)
Cc: netdev@...r.kernel.org
Subject: Re: e1000 tcp checksum incorrect, x86 64b
Jon Smirl <jonsmirl@...il.com> wrote:
>
> App is writing seven bytes to the socket. Socket write timeout expires
> and the seven bytes are sent. The checksum is not getting inserted
> into the packet. It is set to a constant 0x8389 instead of the right
> value. App is gmpc 0.15.4.95, Revision: 6794
>
> Attached Wireshark packet trace show the problem. e1000 is 192.168.1.4
> 64bit, Q6600. Dell Dimension 9200
Wireshark is broken. It needs to know TP_STATUS_CSUMNOTREADY
means that the checksum is partial and will only be completed
when the hardware sends the packet out.
Alternatively disable checksum offload with ethtool.
Cheers,
--
Visit Openswan at http://www.openswan.org/
Email: Herbert Xu ~{PmV>HI~} <herbert@...dor.apana.org.au>
Home Page: http://gondor.apana.org.au/~herbert/
PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt
-
To unsubscribe from this list: send the line "unsubscribe netdev" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Powered by blists - more mailing lists