From owner-freebsd-net@FreeBSD.ORG Thu May 31 00:09:35 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 F337016A469 for ; Thu, 31 May 2007 00:09:34 +0000 (UTC) (envelope-from thompsa@FreeBSD.org) Received: from heff.fud.org.nz (203-109-251-39.static.bliink.ihug.co.nz [203.109.251.39]) by mx1.freebsd.org (Postfix) with ESMTP id A444513C458 for ; Thu, 31 May 2007 00:09:34 +0000 (UTC) (envelope-from thompsa@FreeBSD.org) Received: by heff.fud.org.nz (Postfix, from userid 1001) id EC3B11CC5A; Thu, 31 May 2007 11:54:56 +1200 (NZST) Date: Thu, 31 May 2007 11:54:56 +1200 From: Andrew Thompson To: Jack Vogel Message-ID: <20070530235456.GA67464@heff.fud.org.nz> References: <2a41acea0705301645x65e68e8q23c1b91d5f460ea3@mail.gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <2a41acea0705301645x65e68e8q23c1b91d5f460ea3@mail.gmail.com> User-Agent: Mutt/1.5.13 (2006-08-11) 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 00:09:35 -0000 On Wed, May 30, 2007 at 04:45:05PM -0700, 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? It would barf for things like bridging where the packet gets spit out a different interface. The bridge driver already has code to disable txcsum so it could be made to handle that too. Andrew