From owner-freebsd-stable@FreeBSD.ORG Thu May 14 08:19:12 2009 Return-Path: Delivered-To: freebsd-stable@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 73D97106568A for ; Thu, 14 May 2009 08:19:12 +0000 (UTC) (envelope-from pyunyh@gmail.com) Received: from rv-out-0506.google.com (rv-out-0506.google.com [209.85.198.228]) by mx1.freebsd.org (Postfix) with ESMTP id 3DFE98FC27 for ; Thu, 14 May 2009 08:19:11 +0000 (UTC) (envelope-from pyunyh@gmail.com) Received: by rv-out-0506.google.com with SMTP id k40so731806rvb.43 for ; Thu, 14 May 2009 01:19:11 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:received:received:received:from:date:to:cc :subject:message-id:reply-to:references:mime-version:content-type :content-disposition:in-reply-to:user-agent; bh=nu9SCrXEjckl2IX9qeL8biKeAk80ErS0Agcwt63XUb4=; b=lLieQLcAiku3dZV6Gw9hK1KC8q6rVQOPGZW7sU2/DrSZLzswRPq58u7pj5HT4NH/Ln DgudGOF/CvS+vIncojfTwxsHbPeM+HIpt/xaofe3BBkqfFNF2uU8ufXllLYe+Ex/To5a zJ/UNEpbCWfo0OGb4SDRXIGXVXMqmNn4fDZEg= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=from:date:to:cc:subject:message-id:reply-to:references:mime-version :content-type:content-disposition:in-reply-to:user-agent; b=de/jFnlVSRStnQ5v97p2MCG5WByASKWc/G1/5n1/MR7a0KSFmn9QAs9c5lXQkvbGif aGLKp9NtzyUP62i8uX21wvFMYDgVgF3/yKGLkInyaecme4i13V6zMfxR9H1xKvlxDPeK BH0HT67uWzciVxRP0kZSspqSx4ae4sj1P4Qk4= Received: by 10.140.144.1 with SMTP id r1mr734516rvd.131.1242289151761; Thu, 14 May 2009 01:19:11 -0700 (PDT) Received: from michelle.cdnetworks.co.kr ([114.111.62.249]) by mx.google.com with ESMTPS id c20sm2673749rvf.20.2009.05.14.01.19.09 (version=SSLv3 cipher=RC4-MD5); Thu, 14 May 2009 01:19:10 -0700 (PDT) Received: by michelle.cdnetworks.co.kr (sSMTP sendmail emulation); Thu, 14 May 2009 17:27:50 +0900 From: Pyun YongHyeon Date: Thu, 14 May 2009 17:27:50 +0900 To: Lars Eggert Message-ID: <20090514082750.GU65350@michelle.cdnetworks.co.kr> References: <4A09DEF1.2010202@delphij.net> <4A09FDB2.5080307@eyede.com> <20090513004131.GP65350@michelle.cdnetworks.co.kr> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.4.2.3i Cc: "d@delphij.net" , "freebsd-stable@freebsd.org" , "nigel@eyede.com" Subject: Re: TCP differences in 7.2 vs 7.1 X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list Reply-To: pyunyh@gmail.com List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 14 May 2009 08:19:12 -0000 On Thu, May 14, 2009 at 10:10:12AM +0300, Lars Eggert wrote: > Hi, > > I've been seeing similar issues ("IP bad-len 0" packets in tcpdump > traces") since 7.2-STABLE and em interfaces. Turning off TSO seems to > do the trick here, too. So at least from where I'm sitting, this is > not only an fxp problem. > Then you're seeing different problem on em(4). Last time I checked em(4) TSO code in em(4) didn't use m_pullup and just returned ENXIO to caller. I'm not sure that is related with your issue but would you tell us your network configuration? If you can easily reproduce the issue would you let us know? > Lars