Date: Mon, 09 Jul 2007 11:56:37 +0200 From: Alexander Leidinger <Alexander@Leidinger.net> To: zhouyi zhou <zhouzhouyi@FreeBSD.org> Cc: freebsd-hackers@FreeBSD.org, freebsd-current@FreeBSD.org Subject: Re: rewrite src/sys/i386/i386/in_cksum.c Message-ID: <20070709115637.sapzl5uq3osw4gc4@webmail.leidinger.net> In-Reply-To: <20070709105547.71827eb8.zhouzhouyi@FreeBSD.org> References: <20070709105547.71827eb8.zhouzhouyi@FreeBSD.org>
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Quoting zhouyi zhou <zhouzhouyi@FreeBSD.org> (from Mon, 9 Jul 2007 =20 10:55:47 +0800): > Hey, > Since FreeBSD update gcc from 3.4.x to 4.2.0, the FreeBSD gdb =20 > remote debugger in i386 platform > will find the TCP/UPD checksum will not be computed right, when =20 > calling macro in_cksum > which calls in_cksum_skip in src/sys/i386/i386/in_cksum.c in case of =20 > getting rid of -O flag > supplied to gcc when compiling(The optimize will interfere with =20 > comfortable gdb debugging). > If someone is interested in it, he can lend me a hand to rewrite =20 > all of the similiar cases. A rewrite (port from DFly) of the IP checksum code exists since a long =20 time. ATM I don't remember who ported it (sorry!). I know that Andre =20 wanted to review the code as part of his network-fundraising work, but =20 I don't remember the outcome (or if there's an outcome at all). Search the archives of net/current/arch, maybe you can find it there =20 and test if it solves your problem. Bye, Alexander. --=20 Ignorance should be painful. http://www.Leidinger.net Alexander @ Leidinger.net: PGP ID =3D B0063FE7 http://www.FreeBSD.org netchild @ FreeBSD.org : PGP ID =3D 72077137
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