From: Or Gerlitz <ogerlitz-smomgflXvOZWk0Htik3J/w@public.gmane.org>
To: Jason Gunthorpe
<jgunthorpe-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>
Cc: "Hefty,
Sean" <sean.hefty-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>,
"linux-rdma-u79uwXL29TY76Z2rM5mHXA@public.gmane.org"
<linux-rdma-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>
Subject: Re: using same IP subnet on multiple interfaces
Date: Wed, 18 Aug 2010 09:02:50 +0300 [thread overview]
Message-ID: <4C6B778A.4070000@voltaire.com> (raw)
In-Reply-To: <20100817031945.GA5251-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>
Jason Gunthorpe wrote:
>> As for the original issue we were discussing here, the conclusion is that with upstream 2.6.35 bits for the rdma connection to go from hca1 port1 to hca1 port2 (or from hca1 port1 to hca2 port1), the rdma-cm needs a neighbour, similarly to a ping -I ib0 to ib1 address. A neighbour isn't created unless the responding NIC (ib1 in my example) has both rp_filter set to 0 and accept_local set to 1,
>> does this makes sense?
> This description seemed reasonable to me. It is pretty confusing what binding means in RDMA CM, it is different then sockets, and is some combination of SO_BINDTODEVICE and bind to address.
I was thinking that one of the things taken care by the patch set to
addr.c/cma.c you, David and Sean did last year was to make binding in
rdma-cm to be bind to address by-the-book, in what aspect it is
different now?
Or.
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prev parent reply other threads:[~2010-08-18 6:02 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-08-12 15:42 dual HCAs with upstream kernel Hefty, Sean
[not found] ` <CF9C39F99A89134C9CF9C4CCB68B8DDF25A9687B2B-osO9UTpF0USkrb+BlOpmy7fspsVTdybXVpNB7YpNyf8@public.gmane.org>
2010-08-15 7:50 ` using same IP subnet on multiple interfaces (was: dual HCAs with upstream kernel) Or Gerlitz
[not found] ` <4C679C39.8060709-hKgKHo2Ms0FWk0Htik3J/w@public.gmane.org>
2010-08-15 16:59 ` Jason Gunthorpe
[not found] ` <20100815165946.GA2861-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>
2010-08-16 15:30 ` using same IP subnet on multiple interfaces Or Gerlitz
[not found] ` <4C69597C.2040008-hKgKHo2Ms0FWk0Htik3J/w@public.gmane.org>
2010-08-17 3:19 ` Jason Gunthorpe
[not found] ` <20100817031945.GA5251-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>
2010-08-18 6:02 ` Or Gerlitz [this message]
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