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Date: Tue, 18 Sep 2007 15:39:59 +0200 From: Florian Weimer <fweimer@....de> To: Urs Thuermann <urs@...ogud.escape.de> Cc: Bill Fink <billfink@...dspring.com>, "Brandeburg, Jesse" <jesse.brandeburg@...el.com>, "L F" <lfabio.linux@...il.com>, "Kok, Auke-jan H" <auke-jan.h.kok@...el.com>, "James Chapman" <jchapman@...alix.com>, <netdev@...r.kernel.org> Subject: Re: e1000 driver and samba * Urs Thuermann: > How can a corrupted frame pass the TCP checksum check? The TCP/IP checksums are extremely weak. If the corruption is due to defective SRAM or something like that, it's likely that it causes an error pattern which is 16-bit-aligned. And an even number of 16-bit-aligned bit flips is not detected by the TCP checksum. 8-( Actually, nobody should use TCP without application-level checksums for that reason. But of course, there is HTTP. -- Florian Weimer <fweimer@....de> BFK edv-consulting GmbH http://www.bfk.de/ Kriegsstraße 100 tel: +49-721-96201-1 D-76133 Karlsruhe fax: +49-721-96201-99 - 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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