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From: Jason Gunthorpe <jgunthorpe-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>
To: Sasha Khapyorsky <sashak-smomgflXvOZWk0Htik3J/w@public.gmane.org>
Cc: Ira Weiny <weiny2-i2BcT+NCU+M@public.gmane.org>,
	Hal Rosenstock
	<hal.rosenstock-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>,
	"linux-rdma-u79uwXL29TY76Z2rM5mHXA@public.gmane.org"
	<linux-rdma-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>
Subject: Re: SRP issues with OpenSM 3.3.3
Date: Tue, 15 Dec 2009 10:15:32 -0700	[thread overview]
Message-ID: <20091215171532.GA8288@obsidianresearch.com> (raw)
In-Reply-To: <20091215170317.GV5262@me>

> > However, I don't understand the comment "Only set HopLimit if going through a
> > router"?
> 
> This is from '#ifdef ROUTER_EXP' days - as far as I could understand
> HopLimit should be set to IB_HOPLIMIT_MAX for inter-subnet MADs.

If HopLimit is 0 then no GRH is required, if it is non 0 then the user
of that path needs to apply a GRH. IIRC there are already a few things
in the kernel that follow this?

Jason
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  parent reply	other threads:[~2009-12-15 17:15 UTC|newest]

Thread overview: 22+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2009-12-15  0:43 SRP issues with OpenSM 3.3.3 Ira Weiny
     [not found] ` <20091214164334.064102f0.weiny2-i2BcT+NCU+M@public.gmane.org>
2009-12-15 15:16   ` Hal Rosenstock
     [not found]     ` <f0e08f230912150716y392cf1f1t4cd640b6663f7fea-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2009-12-15 17:09       ` Ira Weiny
     [not found]         ` <20091215090942.b33ddc1e.weiny2-i2BcT+NCU+M@public.gmane.org>
2009-12-15 17:53           ` Hal Rosenstock
2009-12-15 17:12       ` Sasha Khapyorsky
2009-12-15 17:03   ` Sasha Khapyorsky
2009-12-15 17:14     ` Ira Weiny
2009-12-15 17:15     ` Jason Gunthorpe [this message]
     [not found]       ` <20091215171532.GA8288-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>
2009-12-15 17:18         ` Ira Weiny
     [not found]           ` <20091215091819.c217cf36.weiny2-i2BcT+NCU+M@public.gmane.org>
2009-12-15 17:31             ` Jason Gunthorpe
     [not found]               ` <20091215173140.GB8288-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>
2009-12-15 17:48                 ` Ira Weiny
2009-12-15 17:59             ` Hal Rosenstock
     [not found]               ` <f0e08f230912150959j536667bbg51b8381724681880-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2009-12-16  2:55                 ` [RFC PATCH] Set HopLimit based on off subnet " Ira Weiny
     [not found]                   ` <20091215185511.3ae458cc.weiny2-i2BcT+NCU+M@public.gmane.org>
2009-12-16 13:29                     ` Hal Rosenstock
     [not found]                       ` <f0e08f230912160529h64424ba7id5c57dffb770380c-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2009-12-18  2:18                         ` Ira Weiny
     [not found]                           ` <20091217181800.a1ee6b9b.weiny2-i2BcT+NCU+M@public.gmane.org>
2009-12-18 15:20                             ` Hal Rosenstock
2009-12-20 19:57                             ` Sasha Khapyorsky
2009-12-22 11:37                               ` [PATCH] opensm/osm_sa_path_record.c: MGID must be specified explicitly Sasha Khapyorsky
2009-12-22 11:38                                 ` [PATCH] osm_sa_path_record.c: separate mutlicast processing code Sasha Khapyorsky
2009-12-22 11:57                                   ` [PATCH] osm_sa_path_record.c: use PR DGID by reference Sasha Khapyorsky
2010-01-04 19:11                                 ` [PATCH] opensm/osm_sa_path_record.c: MGID must be specified explicitly Hal Rosenstock
2009-12-15 17:56         ` SRP issues with OpenSM 3.3.3 Hal Rosenstock

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