From: Jason Gunthorpe <jgunthorpe-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>
To: Ira Weiny <weiny2-i2BcT+NCU+M@public.gmane.org>
Cc: Hal Rosenstock
<hal-LDSdmyG8hGV8YrgS2mwiifqBs+8SCbDb@public.gmane.org>,
"linux-rdma-u79uwXL29TY76Z2rM5mHXA@public.gmane.org"
<linux-rdma-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>,
Hal Rosenstock
<hal.rosenstock-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
Subject: Re: [PATCH 2/3] infiniband-diags: libibnetdisc Allow a DR Path partial fabric query starting at a CA
Date: Fri, 22 Jul 2011 16:13:49 -0600 [thread overview]
Message-ID: <20110722221349.GT18090@obsidianresearch.com> (raw)
In-Reply-To: <20110722150049.ba8e592f.weiny2-i2BcT+NCU+M@public.gmane.org>
On Fri, Jul 22, 2011 at 03:00:49PM -0700, Ira Weiny wrote:
> I agree it would be nice if one could issue a combined path and "scan through"
> any xCA on the fabric. However, I don't think it is allowed, nor correct to
> do so.
Well, it is explicitly not allowed:
2) If Hop Count is non zero and Hop Pointer is in the range 1 Hop
Pointer < Hop Count, this SMI is an intermediate hop in the directed
route portion of the path. If the node is not a switch, the SMI shall
discard the SMP, otherwise the SMI shall alter the contents of the
directed route SMP as follows:
> Even if this is considered vague there would be a problem a xCA was allowed.
That sort of behavior is explicitly disallowed in other cases, like
reading port info.
Jason
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next prev parent reply other threads:[~2011-07-22 22:13 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-07-20 23:16 [PATCH 2/3] infiniband-diags: libibnetdisc Allow a DR Path partial fabric query starting at a CA Ira Weiny
[not found] ` <20110720161655.1ed38052.weiny2-i2BcT+NCU+M@public.gmane.org>
2011-07-20 23:34 ` Jason Gunthorpe
[not found] ` <20110720233451.GL18090-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>
2011-07-20 23:53 ` Ira Weiny
[not found] ` <20110720165336.894b1298.weiny2-i2BcT+NCU+M@public.gmane.org>
2011-07-21 3:17 ` Jason Gunthorpe
2011-07-22 13:21 ` Hal Rosenstock
[not found] ` <4E297949.2000607-LDSdmyG8hGV8YrgS2mwiifqBs+8SCbDb@public.gmane.org>
2011-07-22 17:29 ` Jason Gunthorpe
[not found] ` <20110722172945.GP18090-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>
2011-07-22 22:00 ` Ira Weiny
[not found] ` <20110722150049.ba8e592f.weiny2-i2BcT+NCU+M@public.gmane.org>
2011-07-22 22:13 ` Jason Gunthorpe [this message]
[not found] ` <20110722221349.GT18090-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>
2011-07-22 22:26 ` Ira Weiny
2011-07-22 22:02 ` Hal Rosenstock
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