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From: Jason Gunthorpe <jgunthorpe-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>
To: Or Gerlitz <ogerlitz-hKgKHo2Ms0FWk0Htik3J/w@public.gmane.org>
Cc: Todd Rimmer <todd.rimmer-h88ZbnxC6KDQT0dZR+AlfA@public.gmane.org>,
	Mike Heinz
	<michael.heinz-h88ZbnxC6KDQT0dZR+AlfA@public.gmane.org>,
	"linux-rdma-u79uwXL29TY76Z2rM5mHXA@public.gmane.org"
	<linux-rdma-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>,
	Roland Dreier <rdreier-FYB4Gu1CFyUAvxtiuMwx3w@public.gmane.org>
Subject: Re: [ewg] [PATCH] pkey fix for ipoib - resubmission
Date: Tue, 22 Jun 2010 08:46:07 -0600	[thread overview]
Message-ID: <20100622144607.GA7767@obsidianresearch.com> (raw)
In-Reply-To: <4C20537D.5080903-hKgKHo2Ms0FWk0Htik3J/w@public.gmane.org>

On Tue, Jun 22, 2010 at 09:09:01AM +0300, Or Gerlitz wrote:
> Jason Gunthorpe wrote:
> > Be aware that mainline and OFED are different in this regard, OFED overrides 
> > the pkey unconditionally for multicast addresses, while mainline doesn't
>  
> Can you clarify this, please?

Hmm.. OFED works on kernels that have compiled-in inline'd multicast
map functions that do not include the pkey copy, while mainline's
multicast map functions do. So to work around this there is a bit of
code in OFED to overwrite the pkey in the multicast hw address. This
means on OFED with those kernels ip maddr returns the wrong hw
address sometimes..

Jason
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  parent reply	other threads:[~2010-06-22 14:46 UTC|newest]

Thread overview: 14+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2010-06-16 13:59 [PATCH] pkey fix for ipoib - resubmission Mike Heinz
     [not found] ` <4C2744E8AD2982428C5BFE523DF8CDCB49D09E7A43-amwN6d8PyQWXx9kJd3VG2h2eb7JE58TQ@public.gmane.org>
2010-06-17 16:36   ` Eli Cohen
     [not found]     ` <AANLkTimLfiuWMpiUFGIvotG0aWiebXC5jv5kfgKUmG4a-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2010-06-17 16:39       ` Mike Heinz
2010-06-18 17:09   ` Mike Heinz
     [not found]     ` <4C2744E8AD2982428C5BFE523DF8CDCB49D09E7C6D-amwN6d8PyQWXx9kJd3VG2h2eb7JE58TQ@public.gmane.org>
2010-06-18 17:22       ` Jason Gunthorpe
     [not found]         ` <20100618172216.GK4630-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>
2010-06-18 17:32           ` [ewg] " Todd Rimmer
     [not found]             ` <5AEC2602AE03EB46BFC16C6B9B200DA816B75308EF-e4KNYiSEog6Xx9kJd3VG2h2eb7JE58TQ@public.gmane.org>
2010-06-18 17:46               ` Jason Gunthorpe
     [not found]                 ` <20100618174650.GL4630-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>
2010-06-18 17:56                   ` Todd Rimmer
     [not found]                     ` <5AEC2602AE03EB46BFC16C6B9B200DA816B75308F7-e4KNYiSEog6Xx9kJd3VG2h2eb7JE58TQ@public.gmane.org>
2010-06-18 18:19                       ` Jason Gunthorpe
     [not found]                         ` <20100618181921.GM4630-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>
2010-06-18 18:38                           ` Todd Rimmer
     [not found]                             ` <5AEC2602AE03EB46BFC16C6B9B200DA816B7530901-e4KNYiSEog6Xx9kJd3VG2h2eb7JE58TQ@public.gmane.org>
2010-06-18 21:46                               ` Jason Gunthorpe
2010-06-22  6:09                           ` Or Gerlitz
     [not found]                             ` <4C20537D.5080903-hKgKHo2Ms0FWk0Htik3J/w@public.gmane.org>
2010-06-22 14:46                               ` Jason Gunthorpe [this message]
     [not found]                                 ` <20100622144607.GA7767-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>
2010-06-23  6:58                                   ` Or Gerlitz

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