Date: Mon, 9 Jul 2007 20:09:54 +0800 From: "Zhouyi Zhou" <zhouzhouyi@FreeBSD.org> To: "Alexander Leidinger" <Alexander@Leidinger.net> Cc: freebsd-hackers@FreeBSD.org, freebsd-current@FreeBSD.org Subject: Re: rewrite src/sys/i386/i386/in_cksum.c Message-ID: <00d901c7c222$109cb310$f100a8c0@iosdf17a8152bc> References: <20070709105547.71827eb8.zhouzhouyi@FreeBSD.org> <20070709115637.sapzl5uq3osw4gc4@webmail.leidinger.net>
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The patch supplied by Gordon http://generic.0xfce3.net/20060524-ipchecksum.patch no longer exists, but I take a look at DragonFlyBSD, I feel that modification follows my idea is modestly to FreeBSD implementation. Zhouyi ----- Original Message ----- From: "Alexander Leidinger" <Alexander@Leidinger.net> To: "zhouyi zhou" <zhouzhouyi@FreeBSD.org> Cc: <freebsd-hackers@FreeBSD.org>; <freebsd-current@FreeBSD.org> Sent: Monday, July 09, 2007 5:56 PM Subject: Re: rewrite src/sys/i386/i386/in_cksum.c Quoting zhouyi zhou <zhouzhouyi@FreeBSD.org> (from Mon, 9 Jul 2007 10:55:47 +0800): > Hey, > Since FreeBSD update gcc from 3.4.x to 4.2.0, the FreeBSD gdb remote > debugger in i386 platform > will find the TCP/UPD checksum will not be computed right, when calling > macro in_cksum > which calls in_cksum_skip in src/sys/i386/i386/in_cksum.c in case of > getting rid of -O flag > supplied to gcc when compiling(The optimize will interfere with > comfortable gdb debugging). > If someone is interested in it, he can lend me a hand to rewrite all > of the similiar cases. A rewrite (port from DFly) of the IP checksum code exists since a long time. ATM I don't remember who ported it (sorry!). I know that Andre wanted to review the code as part of his network-fundraising work, but 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 and test if it solves your problem. Bye, Alexander. -- Ignorance should be painful. http://www.Leidinger.net Alexander @ Leidinger.net: PGP ID = B0063FE7 http://www.FreeBSD.org netchild @ FreeBSD.org : PGP ID = 72077137
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