Date: Thu, 11 Jan 2007 13:00:18 +0100 From: "Pietro Cerutti" <pietro.cerutti@gmail.com> To: "FreeBSD Questions" <freebsd-questions@freebsd.org>, freebsd-hackers@freebsd.org Subject: Fwd: [SOLVED] re(4) incorrect checksum Message-ID: <e572718c0701110400k6565d099s8e1dbef6d3d26c60@mail.gmail.com> In-Reply-To: <e572718c0701110358x6a8a8bb3lcbc765e8b4794d7f@mail.gmail.com> References: <e572718c0701110229q60a66d32o68f789c889b4a06@mail.gmail.com> <e572718c0701110251l23ffa961w1851f19347daf845@mail.gmail.com> <20070111114402.GX80390@cicely12.cicely.de> <e572718c0701110358x6a8a8bb3lcbc765e8b4794d7f@mail.gmail.com>
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On 1/11/07, Bernd Walter <ticso@cicely12.cicely.de> wrote: > On Thu, Jan 11, 2007 at 11:51:51AM +0100, Pietro Cerutti wrote: > > Hi lists, > > ifconfig re0 -txcsum -rxcsum solved the problem.... > > > > Anyway, is this a bug in the driver or in the interface itself? > > That is how checksum offloading works. > tcpdump can't see a correct checksum, because it is not calculated > by the kernel and left for the hardware. Yes, I got it. > However checksum offloading is broken for re(4) based cards, therefor > it is disabled by default. I don't think so.... at least, I did nothing to enable it, but it were indeed enabled (RXCSUM,TXCSU showed up in the options field shown by ifconfig) > > -- > B.Walter http://www.bwct.de http://www.fizon.de > bernd@bwct.de info@bwct.de support@fizon.de > -- Pietro Cerutti ICQ: 117293691 PGP: 0x9571F78E - ASCII Ribbon Campaign - against HTML e-mail and proprietary attachments www.asciiribbon.org
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