From: "Talpey, Thomas" Subject: Re: [RFC,PATCH 0/14] A transport switch for knfsd Date: Thu, 17 May 2007 08:11:49 -0400 Message-ID: References: <20070516191821.GF9626@sgi.com> <20070516205316.GC18927@fieldses.org> <20070517070004.GC27247@sgi.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Cc: nfs@lists.sourceforge.net To: Greg Banks Return-path: Received: from sc8-sf-mx2-b.sourceforge.net ([10.3.1.92] helo=mail.sourceforge.net) by sc8-sf-list2-new.sourceforge.net with esmtp (Exim 4.43) id 1Hoept-0005gL-Ia for nfs@lists.sourceforge.net; Thu, 17 May 2007 05:12:01 -0700 Received: from mx2.netapp.com ([216.240.18.37]) by mail.sourceforge.net with esmtp (Exim 4.44) id 1Hoept-0004mn-BB for nfs@lists.sourceforge.net; Thu, 17 May 2007 05:12:04 -0700 In-Reply-To: <20070517070004.GC27247@sgi.com> References: <20070516191821.GF9626@sgi.com> <20070516205316.GC18927@fieldses.org> <20070517070004.GC27247@sgi.com> List-Id: "Discussion of NFS under Linux development, interoperability, and testing." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: nfs-bounces@lists.sourceforge.net Errors-To: nfs-bounces@lists.sourceforge.net At 03:00 AM 5/17/2007, Greg Banks wrote: >It's intertesting to note that ipv6 support was added without a >serverside transport switch; on Irix the addition of ipv6 was what >justified a transport switch. At the moment, the client-side support doesn't use it either, though it did in earlier experiments. Right now it seems that simply passing in a AF_INET6 address is sufficient to trigger its use. I think the key thing about a "transport" in the NFS context is that it's really a "transport API", i.e. it uses sockets, or RDMA, or has some special property that requires special interface handling. For example, while SCTP in its basic single-stream mode uses sockets and might be a relatively close match to TCP, there are a lot of other aspects to the protocol which are nothing like it and won't be visible pretending it's just TCP (e.g. associations, integrity, etc). Having a bottom-edge transport abstraction helps a lot in taking advantage of them. Tom. ------------------------------------------------------------------------- This SF.net email is sponsored by DB2 Express Download DB2 Express C - the FREE version of DB2 express and take control of your XML. No limits. Just data. Click to get it now. http://sourceforge.net/powerbar/db2/ _______________________________________________ NFS maillist - NFS@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/nfs