From: "J. Bruce Fields" Subject: Re: [PATCH,RFC 00/09] svcrdma: Fast Memory Registration Support Date: Mon, 18 Aug 2008 18:39:53 -0400 Message-ID: <20080818223953.GB32543@fieldses.org> References: <48A30685.6050301@opengridcomputing.com> <20080813211953.GN26765@fieldses.org> <48A36004.1030304@opengridcomputing.com> <20080814194847.GH23859@fieldses.org> <48A4A23D.8040702@opengridcomputing.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: linux-nfs@vger.kernel.org To: Tom Tucker Return-path: Received: from mail.fieldses.org ([66.93.2.214]:55588 "EHLO fieldses.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753414AbYHRWkF (ORCPT ); Mon, 18 Aug 2008 18:40:05 -0400 In-Reply-To: <48A4A23D.8040702@opengridcomputing.com> Sender: linux-nfs-owner@vger.kernel.org List-ID: On Thu, Aug 14, 2008 at 04:23:09PM -0500, Tom Tucker wrote: > Here are the relevant specs: > > Unfortunately, the IB specs are private to the IBTA. > http://www.infinibandta.org/home > > The OFA verbs most closely resemble IB verbs. > > Here are the iWARP protocol specs: > > http://www.ietf.org/rfc/rfc5040.txt > http://www.ietf.org/rfc/rfc5041.txt > http://www.ietf.org/rfc/rfc5044.txt > > Here are the iWARP verbs specs. This is what the adapters where written to. > > http://www.rdmaconsortium.org/home/RNIC_Verbs_Overview2.pdf > http://www.rdmaconsortium.org/home/draft-hilland-iwarp-verbs-v1.0-RDMAC.pdf OK, thanks very much to you and James for all the explanation. And actually the IB specs do appear to be available if you give them your name and address? So could one of you add some of this (the explanation of the security issues, at least) to Documentation/filesystems/nfs-rdma.txt? I'm worried about the fact that the amount of trust required in the network will vary so much depending on exactly which hardware and kernel version the user has. As long as this is relatively specialized hardware, perhaps it's not such a big deal.... But at the very least I think we should make sure this is carefully documented. --b.