From: Jason Gunthorpe <jgunthorpe-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>
To: Steve Wise <swise-7bPotxP6k4+P2YhJcF5u+vpXobYPEAuW@public.gmane.org>
Cc: Roland Dreier <rdreier-FYB4Gu1CFyUAvxtiuMwx3w@public.gmane.org>,
"Tung,
Chien Tin"
<chien.tin.tung-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>,
"linux-rdma-u79uwXL29TY76Z2rM5mHXA@public.gmane.org"
<linux-rdma-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>,
"Waskiewicz Jr,
Peter P"
<peter.p.waskiewicz.jr-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
Subject: Re: [PATCH v2] RDMA/CMA: fix iWARP adapter TCP port space usage
Date: Fri, 11 Jun 2010 19:56:52 -0600 [thread overview]
Message-ID: <20100612015652.GA7648@obsidianresearch.com> (raw)
In-Reply-To: <4C12E073.2040008-7bPotxP6k4+P2YhJcF5u+vpXobYPEAuW@public.gmane.org>
On Fri, Jun 11, 2010 at 08:18:43PM -0500, Steve Wise wrote:
> Further, its not even needed for IB, just iWARP. That's an unnecessary
> admin pain IMO.
IB already completely seperates from the host stack, that is why it
isn't effected by this problem. It has both a seperate port numbering
space (in rdma cm) and a separate addressing space (GID).
The entire problem with iWARP is that it is trying to not be
seperate, unlike IB. So.. simple answer: use a seperate IP, or use a
seperate port space (ie don't use the TCP protocol number).
ROCEE won't have this problem either..
> iWARP should and can easily co-exist with the host TCP by sharing
> the port space. But, as Roland stated already, maybe the only way
> forward it to get end-user pressure applied at the appropriate
> places! :)
*shrug* This isn't going to happen until netdev decides to design-in
statefull offload. I doubt that is going to happen any time
soon. I've already seen Linux max out 40GE on benchmarks, so it is
hard to see what the driver would be.
Jason
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next prev parent reply other threads:[~2010-06-12 1:56 UTC|newest]
Thread overview: 57+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-06-11 12:47 [PATCH v2] RDMA/CMA: fix iWARP adapter TCP port space usage Chien Tung
2010-06-11 16:03 ` Roland Dreier
[not found] ` <adapqzxy2sb.fsf-BjVyx320WGW9gfZ95n9DRSW4+XlvGpQz@public.gmane.org>
2010-06-11 19:49 ` Tung, Chien Tin
[not found] ` <2EFBCAEF10980645BBCFB605689E08E904924CCE42-uLM7Qlg6MbdZtRGVdHMbwrfspsVTdybXVpNB7YpNyf8@public.gmane.org>
2010-06-11 21:13 ` Steve Wise
[not found] ` <4C12A6E8.5040400-7bPotxP6k4+P2YhJcF5u+vpXobYPEAuW@public.gmane.org>
2010-06-11 22:08 ` Roland Dreier
[not found] ` <adamxv1w7cb.fsf-BjVyx320WGW9gfZ95n9DRSW4+XlvGpQz@public.gmane.org>
2010-06-11 22:41 ` Jason Gunthorpe
[not found] ` <20100611224126.GA4630-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>
2010-06-11 22:47 ` Hefty, Sean
[not found] ` <CF9C39F99A89134C9CF9C4CCB68B8DDF255F6BB9B7-osO9UTpF0USkrb+BlOpmy7fspsVTdybXVpNB7YpNyf8@public.gmane.org>
2010-06-11 22:55 ` Jason Gunthorpe
2010-06-11 23:40 ` Steve Wise
[not found] ` <4C12C971.4000909-7bPotxP6k4+P2YhJcF5u+vpXobYPEAuW@public.gmane.org>
2010-06-12 0:04 ` Jason Gunthorpe
[not found] ` <20100612000431.GC4630-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>
2010-06-12 1:18 ` Steve Wise
[not found] ` <4C12E073.2040008-7bPotxP6k4+P2YhJcF5u+vpXobYPEAuW@public.gmane.org>
2010-06-12 1:56 ` Jason Gunthorpe [this message]
[not found] ` <20100612015652.GA7648-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>
2010-06-12 2:10 ` Steve Wise
[not found] ` <4C12EC89.1030305-7bPotxP6k4+P2YhJcF5u+vpXobYPEAuW@public.gmane.org>
2010-06-12 4:34 ` Peter P Waskiewicz Jr
[not found] ` <Pine.WNT.4.64.1006112117160.6192-sfjRBClDQW9noNDWh8xLylnYeNYlB/vhral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
2010-06-12 4:46 ` Roland Dreier
[not found] ` <adaeigcx3hw.fsf-BjVyx320WGW9gfZ95n9DRSW4+XlvGpQz@public.gmane.org>
2010-06-12 6:30 ` Pradeep Satyanarayana
2010-06-12 15:17 ` Steve Wise
[not found] ` <4C13A526.3040500-7bPotxP6k4+P2YhJcF5u+vpXobYPEAuW@public.gmane.org>
2010-06-17 14:14 ` Bernard Metzler
[not found] ` <OF026C9B22.332F6F2C-ONC1257745.00429E02-C1257745.004E411D-Xeyd2O9EBijQT0dZR+AlfA@public.gmane.org>
2010-06-17 14:56 ` Steve Wise
[not found] ` <4C1A378B.9030509-7bPotxP6k4+P2YhJcF5u+vpXobYPEAuW@public.gmane.org>
2010-06-17 16:13 ` Bernard Metzler
2010-06-23 17:30 ` Roland Dreier
[not found] ` <ada8w65veq4.fsf-BjVyx320WGW9gfZ95n9DRSW4+XlvGpQz@public.gmane.org>
2010-06-23 17:37 ` Steve Wise
[not found] ` <4C224652.2060601-7bPotxP6k4+P2YhJcF5u+vpXobYPEAuW@public.gmane.org>
2010-06-23 18:33 ` Tung, Chien Tin
[not found] ` <2EFBCAEF10980645BBCFB605689E08E90492696E76-uLM7Qlg6MbdZtRGVdHMbwrfspsVTdybXVpNB7YpNyf8@public.gmane.org>
2010-06-23 18:48 ` Steve Wise
2010-06-23 18:20 ` Steve Wise
[not found] ` <4C225078.6050001-7bPotxP6k4+P2YhJcF5u+vpXobYPEAuW@public.gmane.org>
2010-06-23 18:28 ` Roland Dreier
[not found] ` <adar5jxtxho.fsf-BjVyx320WGW9gfZ95n9DRSW4+XlvGpQz@public.gmane.org>
2010-06-23 18:46 ` Steve Wise
[not found] ` <4C225697.6060702-7bPotxP6k4+P2YhJcF5u+vpXobYPEAuW@public.gmane.org>
2010-06-23 18:45 ` Roland Dreier
2010-06-23 19:29 ` Jason Gunthorpe
[not found] ` <20100623192909.GT4630-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>
2010-06-23 19:42 ` Steve Wise
[not found] ` <4C2263B3.9010608-7bPotxP6k4+P2YhJcF5u+vpXobYPEAuW@public.gmane.org>
2010-06-23 19:45 ` Steve Wise
[not found] ` <4C226441.5000904-7bPotxP6k4+P2YhJcF5u+vpXobYPEAuW@public.gmane.org>
2010-06-23 19:49 ` Steve Wise
2010-06-23 19:52 ` Jason Gunthorpe
[not found] ` <20100623195210.GU4630-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>
2010-06-23 20:01 ` Roland Dreier
[not found] ` <adawrtpsem5.fsf-BjVyx320WGW9gfZ95n9DRSW4+XlvGpQz@public.gmane.org>
2010-06-23 20:13 ` Steve Wise
2010-06-23 20:11 ` Steve Wise
[not found] ` <4C226A6F.4000801-7bPotxP6k4+P2YhJcF5u+vpXobYPEAuW@public.gmane.org>
2010-06-23 20:09 ` Jason Gunthorpe
[not found] ` <20100623200937.GV4630-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>
2010-06-23 20:19 ` Steve Wise
[not found] ` <4C226C53.7080802-7bPotxP6k4+P2YhJcF5u+vpXobYPEAuW@public.gmane.org>
2010-06-23 20:26 ` Jason Gunthorpe
[not found] ` <20100623202607.GW4630-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>
2010-06-23 20:39 ` Steve Wise
2010-06-23 20:29 ` Steve Wise
2010-06-23 19:17 ` Tung, Chien Tin
[not found] ` <2EFBCAEF10980645BBCFB605689E08E90492696EF7-uLM7Qlg6MbdZtRGVdHMbwrfspsVTdybXVpNB7YpNyf8@public.gmane.org>
2010-06-23 19:50 ` Roland Dreier
[not found] ` <ada6319ttnj.fsf-BjVyx320WGW9gfZ95n9DRSW4+XlvGpQz@public.gmane.org>
2010-06-23 20:51 ` Tung, Chien Tin
2010-06-25 16:46 ` Bernard Metzler
[not found] ` <OFE69DF7DF.E7AB1B1F-ONC125774D.0035CCED-C125774D.005C2F46-Xeyd2O9EBijQT0dZR+AlfA@public.gmane.org>
2010-06-25 20:14 ` Tung, Chien Tin
[not found] ` <2EFBCAEF10980645BBCFB605689E08E904926FF2A4-uLM7Qlg6MbdZtRGVdHMbwrfspsVTdybXVpNB7YpNyf8@public.gmane.org>
2010-07-06 20:52 ` Tung, Chien Tin
[not found] ` <2EFBCAEF10980645BBCFB605689E08E904928D9C9B-uLM7Qlg6MbdZtRGVdHMbwrfspsVTdybXVpNB7YpNyf8@public.gmane.org>
2010-07-06 21:03 ` Steve Wise
[not found] ` <4C339A13.3030802-7bPotxP6k4+P2YhJcF5u+vpXobYPEAuW@public.gmane.org>
2010-07-07 15:37 ` Bernard Metzler
[not found] ` <OF9B577A15.49E0F3EB-ONC1257759.005129F2-C1257759.0055D7D7-Xeyd2O9EBijQT0dZR+AlfA@public.gmane.org>
2010-07-07 16:26 ` Steve Wise
[not found] ` <4C34AAA6.2080909-7bPotxP6k4+P2YhJcF5u+vpXobYPEAuW@public.gmane.org>
2010-07-07 18:10 ` Tung, Chien Tin
[not found] ` <2EFBCAEF10980645BBCFB605689E08E904928DA373-uLM7Qlg6MbdZtRGVdHMbwrfspsVTdybXVpNB7YpNyf8@public.gmane.org>
2010-07-07 18:12 ` Steve Wise
2010-06-12 5:22 ` Jason Gunthorpe
[not found] ` <20100612052242.GA17793-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>
2010-06-12 14:51 ` Tung, Chien Tin
2010-06-11 23:45 ` Steve Wise
2010-06-11 19:40 ` Or Gerlitz
[not found] ` <AANLkTinDsfGtQZUc6kfW2-pWK51V2SK3CLjE-8jDjfzN-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2010-06-11 19:52 ` Tung, Chien Tin
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