Re: [PATCH] infiniband-diags: Add SMP/QP0 usage explanation to general man page

[Ira Weiny <weiny2-i2BcT+NCU+M@public.gmane.org>]

On Thu, 31 May 2012 19:35:32 -0400
Hal Rosenstock <hal-LDSdmyG8hGV8YrgS2mwiifqBs+8SCbDb@public.gmane.org> wrote:

> On 5/31/2012 7:02 PM, Ira Weiny wrote:
> > 
> > 
> > Signed-off-by: Ira Weiny <weiny2-i2BcT+NCU+M@public.gmane.org>
> > ---
> >  doc/rst/infiniband-diags.8.in.rst |   12 ++++++++++++
> >  1 files changed, 12 insertions(+), 0 deletions(-)
> > 
> > diff --git a/doc/rst/infiniband-diags.8.in.rst b/doc/rst/infiniband-diags.8.in.rst
> > index 6a86ae2..9cd4524 100644
> > --- a/doc/rst/infiniband-diags.8.in.rst
> > +++ b/doc/rst/infiniband-diags.8.in.rst
> > @@ -23,6 +23,18 @@ may therefore work even in unconfigured subnets.  Other, higher level
> >  utilities, require LID routed MAD's and to some extent SA/SM access.
> >  
> >  
> > +THE USE OF SMP's (QP0)
> > +======================
> > +
> > +Many of the tools in this package rely on the use of SMP's via QP0 to acquire
> 
> SMPs

done

> 
> > +data directly from hardware.  
> 
> SMA rather than hardware

done.

> 
> > While this mode of operation is not technically
> > +in compliance with the InfiniBand specification, 
> 
> I think this is a grey area.

I agree.  However, I thought with SRIOV support and MKey support it was worth mentioning this.

Ira

> 
> -- Hal
> 
> > practical experience has found
> > +that this level of diagnostics is valuable when working with a fabric which is
> > +broken or only partially configured.  For this reason many of these tools may
> > +require the use of an MKey or operation from Virtual Machines may be restricted
> > +for security reasons.
> > +
> > +
> >  COMMON OPTIONS
> >  ==============
> >  
> 


-- 
Ira Weiny
Member of Technical Staff
Lawrence Livermore National Lab
925-423-8008
weiny2-i2BcT+NCU+M@public.gmane.org
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