From mboxrd@z Thu Jan 1 00:00:00 1970 From: Hal Rosenstock Subject: Re: [PATCH] infiniband-diags: Add SMP/QP0 usage explanation to general man page Date: Thu, 31 May 2012 21:06:03 -0400 Message-ID: <4FC8157B.7040107@dev.mellanox.co.il> References: <20120531160249.f23247ea.weiny2@llnl.gov> <4FC80044.8010508@dev.mellanox.co.il> <20120531165831.7282b711.weiny2@llnl.gov> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <20120531165831.7282b711.weiny2-i2BcT+NCU+M@public.gmane.org> Sender: linux-rdma-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: Ira Weiny Cc: "linux-rdma-u79uwXL29TY76Z2rM5mHXA@public.gmane.org" List-Id: linux-rdma@vger.kernel.org On 5/31/2012 7:58 PM, Ira Weiny wrote: > On Thu, 31 May 2012 19:35:32 -0400 > Hal Rosenstock wrote: > >> On 5/31/2012 7:02 PM, Ira Weiny wrote: >>> >>> >>> Signed-off-by: Ira Weiny >>> --- >>> 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. For SRIOV (guests), the only diags are ibstat and ibstatus right now. Should there be a separate guest package with just those and their man pages ? -- Hal > > 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 >>> ============== >>> >> > > -- To unsubscribe from this list: send the line "unsubscribe linux-rdma" in the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org More majordomo info at http://vger.kernel.org/majordomo-info.html