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Date: Sun, 02 Dec 2007 17:00:03 +0100 From: "Holger Hoffstaette" <holger@...ards.de> To: netdev@...r.kernel.org Cc: linux-kernel@...r.kernel.org Subject: Re: Reproducible data corruption with sendfile+vsftp - splice regression? On Fri, 30 Nov 2007 10:26:54 -0800, Rick Jones wrote: > Could the corruption be seen in a tcpdump trace prior to transmission (ie > taken on the sender) or was it only seen after the data passed out the > NIC? I did the following: 1) turn on tso on the server's r8169: ethtool --offload eth0 tso on 2) on the server: tcpdump -i eth0 -s 0 -w <file> 3) ftp'ed file to 100mbit client As expected the file was corrupted, and the various corrupted byte sequences also show up in the tcpdump file at the corresponding offsets. I did this with 2.6.22.14, so it does not seem to be a recent regression in .23/.24. All files can be found here: http://hoho.dyndns.org/~holger/dist/r8169-tso/ I will gladly try out any other tweaks but need some guidance as I don't know what exactly to change - maybe without NAPI for the r8169? thank you Holger -- 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
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