Date: Fri, 24 Feb 2017 11:03:23 -0700
From: Jason Gunthorpe <jgunthorpe@obsidianresearch.com>
To: Jeff Layton <jlayton@redhat.com>
Cc: Tom Talpey <tom@talpey.com>, "J. Bruce Fields" <bfields@fieldses.org>,
        trond.myklebust@primarydata.com, schumaker.anna@gmail.com,
        linux-nfs@vger.kernel.org, Chuck Lever <chuck.lever@oracle.com>,
        linux-rdma@vger.kernel.org
Subject: Re: [PATCH 1/4] sunrpc: flag transports as using IETF approved
 congestion control protocols
Message-ID: <20170224180323.GA22491@obsidianresearch.com>
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Sender: linux-nfs-owner@vger.kernel.org

> I'd rather rely on those attributes instead of any sort of IETF
> approval anyway. Do all RDMA transports (RoCEv2, in particular) have
> those characteristics?

The NFS-RDMA driver only works with RDMA RC transports which are
defined to provide all those characteristics.

> In any case, for now I think we should just give all RDMA transports a
> pass, and clean that up later. I'm mostly interested in excluding UDP
> over IP for now -- being more strict with RDMA can come later.

Makes sense to me. At the end of the day I think everything supported
by NFS-RDMA should be permitted to use NFSv4, and we should ignore
sketchy spec language that suggests otherwise.

Jason