From owner-freebsd-current@FreeBSD.ORG Tue Mar 11 09:35:34 2008 Return-Path: Delivered-To: freebsd-current@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 6DE791065675 for ; Tue, 11 Mar 2008 09:35:34 +0000 (UTC) (envelope-from qpadla@gmail.com) Received: from fg-out-1718.google.com (fg-out-1718.google.com [72.14.220.156]) by mx1.freebsd.org (Postfix) with ESMTP id D79078FC26 for ; Tue, 11 Mar 2008 09:35:33 +0000 (UTC) (envelope-from qpadla@gmail.com) Received: by fg-out-1718.google.com with SMTP id 16so2001485fgg.35 for ; Tue, 11 Mar 2008 02:35:32 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:received:received:from:reply-to:to:subject:date:user-agent:cc:references:in-reply-to:mime-version:content-type:content-transfer-encoding:content-disposition:message-id; bh=Lq7ORneA0wP+wPeNUGWzQJpXR/vQ/E7ougA3Q+ql9jA=; b=Em3VDkUW3z2g5Uwfsd31eC6azEfFQmdzT+eEXEU18itwleCmSTWsj8zR2ngHYlNiOUYmqtzxa5GBtTUZ52yV+sHj1rkPgwrgbElH+YwtRuW/hb6bB8MnBLtO7JrvAALZkRJZ154ow7spnQN/1s/BBQpDP1buCjkeln+4krSzwNE= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=from:reply-to:to:subject:date:user-agent:cc:references:in-reply-to:mime-version:content-type:content-transfer-encoding:content-disposition:message-id; b=nvmxIIHkxMyUaQsXmtQVp9hRxsMh19CpPKDXMaY9rGruN0kiyy//N6d9lelfgUzjlj3Tl8yTAKHfFrX2SuTGZjp+O2/IQX8DYl1uAJdnT3zWVOAT0yoIjP6t3F50jWUZuPdX4AmCe2hk3VcAi7ZQOXxMf0iCvpWLzEc1aA4nA6U= Received: by 10.86.53.8 with SMTP id b8mr7974493fga.64.1205228132607; Tue, 11 Mar 2008 02:35:32 -0700 (PDT) Received: from atlas ( [89.162.141.1]) by mx.google.com with ESMTPS id b17sm15996980fka.4.2008.03.11.02.35.30 (version=TLSv1/SSLv3 cipher=OTHER); Tue, 11 Mar 2008 02:35:31 -0700 (PDT) From: Nikolay Pavlov To: freebsd-current@freebsd.org Date: Tue, 11 Mar 2008 11:35:28 +0200 User-Agent: KMail/1.9.6 (enterprise 0.20070907.709405) References: <200802042142.38606.qpadla@gmail.com> <006801c87f19$a14d8060$b6db87d4@multiplay.co.uk> <47D5A78F.1050403@vnovy.net> In-Reply-To: <47D5A78F.1050403@vnovy.net> MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Content-Disposition: inline Message-Id: <200803111135.28626.qpadla@gmail.com> Cc: Vitezslav Novy , Steven Hartland , jfvogel@gmail.com Subject: Re: IP bad-len 0 ( on em0 ) X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list Reply-To: qpadla@gmail.com List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 11 Mar 2008 09:35:34 -0000 On Monday 10 March 2008 23:26:39 Vitezslav Novy wrote: > Steven Hartland wrote: > > Did you ever get anywhere with this? Did Jack respond? > > > > ----- Original Message ----- From: "Nikolay Pavlov" > > > > On Wednesday 06 February 2008 19:12:20 Vitezslav Novy wrote: > >> >> Do you have set TSO flag on interface? > >> > > >> > Good catch. The problem is gone with net.inet.tcp.tso set to 0. > >> > But TSO is enabled by default in 7.0. Could this be a em driver > >> > bug? > >> > >> I don't know. I only saw this when researched another TSO related > >> problem. > >> > >> vita > > > > May be Jack could say something about this? > > It is TSO related problem of em driver. > Affects only cards with adapter->hw.mac.type < e1000_82575. > During transmit function em_tso_setup is called and this function sets > packet ip_len field to zero. (also ip csum) > > After successful transmit, packet is injected to BPF with zeroed ip_len > field. So this is driver or hardware problem? Should i change a network card? -- ====================================================================== - Best regards, Nikolay Pavlov. <<<----------------------------------- ======================================================================