From owner-freebsd-net@FreeBSD.ORG Thu May 31 00:14:23 2007 Return-Path: X-Original-To: freebsd-net@freebsd.org Delivered-To: freebsd-net@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [69.147.83.52]) by hub.freebsd.org (Postfix) with ESMTP id 38BF816A400 for ; Thu, 31 May 2007 00:14:23 +0000 (UTC) (envelope-from kip.macy@gmail.com) Received: from wr-out-0506.google.com (wr-out-0506.google.com [64.233.184.229]) by mx1.freebsd.org (Postfix) with ESMTP id EE25A13C45A for ; Thu, 31 May 2007 00:14:22 +0000 (UTC) (envelope-from kip.macy@gmail.com) Received: by wr-out-0506.google.com with SMTP id 70so966502wra for ; Wed, 30 May 2007 17:14:22 -0700 (PDT) DKIM-Signature: a=rsa-sha1; c=relaxed/relaxed; d=gmail.com; s=beta; h=domainkey-signature:received:received:message-id:date:from:to:subject:cc:in-reply-to:mime-version:content-type:content-transfer-encoding:content-disposition:references; b=Grs1IRFQEw2z+Pmm3+/nOvEbohDs3+AuTz0kC0JfRgY1U9rP0O1zE80pocjtrsqDm3Se8UuBnWMnmEYj7B0fKTXYqubrQAueA1HX/8JoJ2qKT6TPuXZ0Yo2+uAOl3J+IGQZn6CQwQ377FR25tKL9uQ1IEABj17VGp5pdw9CTKT8= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=beta; h=received:message-id:date:from:to:subject:cc:in-reply-to:mime-version:content-type:content-transfer-encoding:content-disposition:references; b=jYKNsBMMS1DjRx2A0xvejoXgEil1VVrIHk2JYX+jNs3RTnIAnydegmqBo9BMNxQjyOzsIfyrmvGteeTeuw83/Eidn467KVxYp+kthSrIgEUBaXl7o5HDpggZLaoxKP3wW7VZvTn1trRV2T6r6U7NG13GpoqEK59D/ko9znY1Mt8= Received: by 10.78.160.4 with SMTP id i4mr1930hue.1180570461443; Wed, 30 May 2007 17:14:21 -0700 (PDT) Received: by 10.78.107.13 with HTTP; Wed, 30 May 2007 17:14:21 -0700 (PDT) Message-ID: Date: Wed, 30 May 2007 17:14:21 -0700 From: "Kip Macy" To: "Jack Vogel" In-Reply-To: <2a41acea0705301645x65e68e8q23c1b91d5f460ea3@mail.gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Content-Disposition: inline References: <2a41acea0705301645x65e68e8q23c1b91d5f460ea3@mail.gmail.com> Cc: freebsd-net Subject: Re: driver packet coalesce X-BeenThere: freebsd-net@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Networking and TCP/IP with FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 31 May 2007 00:14:23 -0000 On 5/30/07, Jack Vogel wrote: > Does any driver do this now? And if a driver were to coalesce > packets and send something up the stack that violates mss > will it barf? mxge has a working implementation, cxgb's is bit-rotted at this instant. I'm going to add an mbuf flag to bypass the MTU check. Andre says he intends to add generalized support for this in ifnet at some point, but I think he is very busy right now. -Kip