From owner-freebsd-hackers@FreeBSD.ORG Mon Sep 19 17:47:31 2011 Return-Path: Delivered-To: freebsd-hackers@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 9008B106564A; Mon, 19 Sep 2011 17:47:31 +0000 (UTC) (envelope-from lacombar@gmail.com) Received: from mail-ww0-f50.google.com (mail-ww0-f50.google.com [74.125.82.50]) by mx1.freebsd.org (Postfix) with ESMTP id BCFA18FC16; Mon, 19 Sep 2011 17:47:30 +0000 (UTC) Received: by wwe3 with SMTP id 3so7793997wwe.31 for ; Mon, 19 Sep 2011 10:47:29 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :cc:content-type; bh=CMiY0Iolp27w33Kbt/bAJuZgPdM87SgugvCEYZJUE44=; b=p/I+LH5yXlS8Bty1mags0kzQ76dwtfkeKYK7lB+vqL1AfkoZcR4mFuoN1CDMClwSMH jv6yTG55CljrSiMY1BhUxc41ONDLjYiab7EGe4+s3+7T1EIi5hWPXrZmItSUkJ2bprLH oWzPCqJ7QP6ggnyJHSC4f5jdRZrVW+v8awg+M= MIME-Version: 1.0 Received: by 10.216.172.75 with SMTP id s53mr3024029wel.38.1316454449053; Mon, 19 Sep 2011 10:47:29 -0700 (PDT) Received: by 10.180.95.169 with HTTP; Mon, 19 Sep 2011 10:47:29 -0700 (PDT) In-Reply-To: <20110919165920.GA4202@michelle.cdnetworks.com> References: <20110917203218.GC13993@michelle.cdnetworks.com> <20110918210647.GA8930@onelab2.iet.unipi.it> <20110919020131.GA11657@onelab2.iet.unipi.it> <4E76E5B9.9080301@sepehrs.com> <20110919165920.GA4202@michelle.cdnetworks.com> Date: Mon, 19 Sep 2011 13:47:29 -0400 Message-ID: From: Arnaud Lacombe To: pyunyh@gmail.com Content-Type: text/plain; charset=ISO-8859-1 Cc: Adrian Chadd , freebsd-hackers@freebsd.org, Hooman Fazaeli , Jack Vogel , jfv@freebsd.org, Luigi Rizzo Subject: Re: intel checksum offload X-BeenThere: freebsd-hackers@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Technical Discussions relating to FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 19 Sep 2011 17:47:31 -0000 Hi, On Mon, Sep 19, 2011 at 12:59 PM, YongHyeon PYUN wrote: > On Mon, Sep 19, 2011 at 10:17:22AM -0400, Arnaud Lacombe wrote: >> Hi, >> >> On Mon, Sep 19, 2011 at 5:28 AM, Adrian Chadd wrote: >> > Arnaud (and others), >> > >> > Liaising with vendors is not an easy task. The reason why Intel (and >> > other vendors) don't supply detailed history and reasoning for their >> > development efforts is that their engineers are likely tasked with >> > "making it work" versus "writing lots of stuff down for public >> > release." In some instances, the vendor support of FreeBSD (and "free" >> > open source in general) is done as a side-project by some of the >> > engineers inside the company. >> > >> > So in this case, you may find that Jack and the other engineers at >> > Intel just don't have the time or resources to dedicate the kinds of >> > feedback and support you seem to be after. He and others likely have a >> > huge set of tasks to do at work and none of them officially include >> > "support FreeBSD/Linux developers by providing detailed feedback and >> > assistance." So whenever Jack pops up to help out, he's likely doing >> > it in his spare time. :-) >> > >> Yes, and he seems to really like to waste his spare time by repeating >> me for two months to increase `kern.ipc.nmbclusters' to fix issue I >> was seeing, when the code was clearly buggy, even when I sent him >> patchs fixing issues. >> > > If you think you encountered a driver bug, could you share it with > us? I didn't closely follow em(4)/lem(4)/igb(4) changes for a long > time so I'm not sure whether I can come up with reasonable fix for > the issue but I may be able to help you. > They ended up being fixed, thanks :-) Now, up until next week, we were struggle on the mbuf corruption I reported on freebsd-net@, but I do not think it is a driver issue per-se. - Arnaud