From: Jason Gunthorpe <jgunthorpe-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>
To: Steve Wise <swise-7bPotxP6k4+P2YhJcF5u+vpXobYPEAuW@public.gmane.org>
Cc: Jeff Squyres <jsquyres-FYB4Gu1CFyUAvxtiuMwx3w@public.gmane.org>,
"Roland Dreier (rdreier)"
<rdreier-FYB4Gu1CFyUAvxtiuMwx3w@public.gmane.org>,
sean.hefty-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org,
linux-rdma-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
ewg-G2znmakfqn7U1rindQTSdQ@public.gmane.org
Subject: Re: bug 1918 - openmpi broken due to rdma-cm changes
Date: Fri, 5 Feb 2010 11:56:17 -0700 [thread overview]
Message-ID: <20100205185616.GS16490@obsidianresearch.com> (raw)
In-Reply-To: <4B6C6453.9090706-7bPotxP6k4+P2YhJcF5u+vpXobYPEAuW@public.gmane.org>
On Fri, Feb 05, 2010 at 12:32:51PM -0600, Steve Wise wrote:
> I think we should remove the feature of allowing binds to 127.0.0.1
> altogether based on Jeff's arguments and my assertion that 127.0.0.1 is
> a sw-loopback mechanism anyway...
I don't agree, the kernel should be free to provide a loop back
service any way it likes, and if that means using one of the HW
adaptors to accelerate the work, then fine. Consider if we see the
RDMAoE (soft RDMA) patches then it would be reasonable for all
kernels to support RDMA on the loopback.
At a minimum, RDMA CM is an IP service, so whatever logic you use to
determine addresses for TCP must also be done after determining a list
of valid RDMA IPs. Trying to do RDMA CM bind just gives you the list
of candidate addreses, no different than netlink does for TCP.
One of those steps must be at least filtering 127.0.0.0/8. The user
should also be able to have some input into the IP filter - software
RDMAoE for instance really make this important.
Jason
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next prev parent reply other threads:[~2010-02-05 18:56 UTC|newest]
Thread overview: 84+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-02-05 11:32 bug 1918 - openmpi broken due to rdma-cm changes Jeff Squyres (jsquyres)
[not found] ` <58D723FE08DC6A4398E6596E38F3FA170566DA-2KNrN6/GZtCAsgjym8flbKBKnGwkPULj@public.gmane.org>
2010-02-05 16:16 ` Steve Wise
[not found] ` <4B6C4460.3050908-7bPotxP6k4+P2YhJcF5u+vpXobYPEAuW@public.gmane.org>
2010-02-05 16:45 ` Steve Wise
2010-02-05 17:51 ` Roland Dreier
[not found] ` <ada4olvefl4.fsf-BjVyx320WGW9gfZ95n9DRSW4+XlvGpQz@public.gmane.org>
2010-02-05 17:58 ` Jeff Squyres
[not found] ` <324EFA68-12F6-46E9-B876-7F4847B53224-FYB4Gu1CFyUAvxtiuMwx3w@public.gmane.org>
2010-02-05 18:32 ` Steve Wise
[not found] ` <4B6C6453.9090706-7bPotxP6k4+P2YhJcF5u+vpXobYPEAuW@public.gmane.org>
2010-02-05 18:49 ` Roland Dreier
2010-02-05 18:56 ` Jason Gunthorpe [this message]
[not found] ` <20100205185616.GS16490-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>
2010-02-05 20:08 ` Jeff Squyres
[not found] ` <E8FF8BD1-80AC-4AA7-BC2A-CE7547FB9ABA-FYB4Gu1CFyUAvxtiuMwx3w@public.gmane.org>
2010-02-05 21:14 ` Jason Gunthorpe
[not found] ` <20100205211455.GT16490-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>
2010-02-05 21:40 ` Jeff Squyres
[not found] ` <697C6107-13A9-48E3-B451-02529305100D-FYB4Gu1CFyUAvxtiuMwx3w@public.gmane.org>
2010-02-05 21:53 ` Steve Wise
[not found] ` <4B6C9369.1070208-7bPotxP6k4+P2YhJcF5u+vpXobYPEAuW@public.gmane.org>
2010-02-05 22:15 ` Sean Hefty
[not found] ` <77E29960440B4806B112A7158F4FA1C4-Zpru7NauK7drdx17CPfAsdBPR1lH4CV8@public.gmane.org>
2010-02-05 22:21 ` Steve Wise
2010-02-06 16:18 ` Steve Wise
2010-02-05 22:20 ` Jeff Squyres
2010-02-06 0:54 ` Roland Dreier
2010-02-05 18:42 ` Sean Hefty
[not found] ` <3762D25FD9474444A4B3E2240EFB8D0E-Zpru7NauK7drdx17CPfAsdBPR1lH4CV8@public.gmane.org>
2010-02-05 19:01 ` Steve Wise
[not found] ` <4B6C6B23.4010704-7bPotxP6k4+P2YhJcF5u+vpXobYPEAuW@public.gmane.org>
2010-02-05 19:24 ` Roland Dreier
2010-02-05 17:57 ` Jeff Squyres
2010-02-05 16:22 ` Sean Hefty
[not found] ` <0D5487526204477AA2ABED06E46768E2-Zpru7NauK7drdx17CPfAsdBPR1lH4CV8@public.gmane.org>
2010-02-05 16:38 ` Steve Wise
[not found] ` <4B6C498F.3060708-7bPotxP6k4+P2YhJcF5u+vpXobYPEAuW@public.gmane.org>
2010-02-05 16:52 ` Sean Hefty
[not found] ` <F6DF49B759AD49EEB44BECD99FE26DCF-Zpru7NauK7drdx17CPfAsdBPR1lH4CV8@public.gmane.org>
2010-02-05 17:08 ` Steve Wise
2010-02-07 21:44 ` [ewg] " Tziporet Koren
[not found] ` <4B6F3451.2070304-VPRAkNaXOzVS1MOuV/RT9w@public.gmane.org>
2010-02-08 5:38 ` Steve Wise
2010-02-05 20:09 ` Sean Hefty
[not found] ` <38B735478FE94F40BBA3E8BFD794B10F-Zpru7NauK7drdx17CPfAsdBPR1lH4CV8@public.gmane.org>
2010-02-06 16:31 ` Steve Wise
[not found] ` <4B6D9948.6040007-7bPotxP6k4+P2YhJcF5u+vpXobYPEAuW@public.gmane.org>
2010-02-06 16:45 ` Steve Wise
2010-02-07 0:12 ` Sean Hefty
[not found] ` <B41CA82E76BB439B892B4874D38EA652-Zpru7NauK7drdx17CPfAsdBPR1lH4CV8@public.gmane.org>
2010-02-07 1:22 ` Steve Wise
[not found] ` <4B6E15C4.9020703-7bPotxP6k4+P2YhJcF5u+vpXobYPEAuW@public.gmane.org>
2010-02-07 11:56 ` [ewg] " Tziporet Koren
[not found] ` <4B6EAA5F.1000208-VPRAkNaXOzVS1MOuV/RT9w@public.gmane.org>
2010-02-07 16:39 ` Steve Wise
[not found] ` <4B6EECBE.6020509-7bPotxP6k4+P2YhJcF5u+vpXobYPEAuW@public.gmane.org>
2010-02-07 16:48 ` Roland Dreier
[not found] ` <ada4oltxa8j.fsf-BjVyx320WGW9gfZ95n9DRSW4+XlvGpQz@public.gmane.org>
2010-02-07 17:42 ` Steve Wise
2010-02-08 5:27 ` [ewg] " Sean Hefty
2010-02-08 11:52 ` Tziporet Koren
[not found] ` <4B6FFB07.1070701-VPRAkNaXOzVS1MOuV/RT9w@public.gmane.org>
2010-02-08 14:29 ` Steve Wise
2010-02-08 6:02 ` [PATCH] [for-2.6.33] rdma/cm: disallow loopback address for iwarp devices Sean Hefty
[not found] ` <79BAA34231304F1E84C5A5A53C50A207-Zpru7NauK7drdx17CPfAsdBPR1lH4CV8@public.gmane.org>
2010-02-08 11:52 ` [ewg] " Tziporet Koren
[not found] ` <4B6FFB1B.40905-VPRAkNaXOzVS1MOuV/RT9w@public.gmane.org>
2010-02-08 14:29 ` Steve Wise
[not found] ` <4B701FE6.60302-7bPotxP6k4+P2YhJcF5u+vpXobYPEAuW@public.gmane.org>
2010-02-08 16:52 ` [ewg] " Roland Dreier
[not found] ` <adawrynwtz9.fsf-BjVyx320WGW9gfZ95n9DRSW4+XlvGpQz@public.gmane.org>
2010-02-08 19:19 ` Jason Gunthorpe
[not found] ` <20100208191927.GU16490-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>
2010-02-08 20:02 ` Steve Wise
[not found] ` <4B706DED.9080403-7bPotxP6k4+P2YhJcF5u+vpXobYPEAuW@public.gmane.org>
2010-02-08 20:33 ` Sean Hefty
[not found] ` <C8A2C57AD5FA4141860DBFF60BFDE2DC-Zpru7NauK7drdx17CPfAsdBPR1lH4CV8@public.gmane.org>
2010-02-08 21:16 ` Steve Wise
[not found] ` <4B707F2D.3030508-7bPotxP6k4+P2YhJcF5u+vpXobYPEAuW@public.gmane.org>
2010-02-08 21:56 ` [ewg] " Jeff Squyres
[not found] ` <41CC15C4-0200-4C9E-9E10-3D2A9B76D16B-FYB4Gu1CFyUAvxtiuMwx3w@public.gmane.org>
2010-02-08 22:09 ` Jason Gunthorpe
[not found] ` <20100208220903.GW16490-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>
2010-02-08 22:11 ` Jeff Squyres
2010-02-08 22:13 ` Sean Hefty
[not found] ` <7CC17592BE414EFCA00A1CB6033D047A-Zpru7NauK7drdx17CPfAsdBPR1lH4CV8@public.gmane.org>
2010-02-08 22:17 ` [ewg] " Jeff Squyres
[not found] ` <44864D85-03D1-412E-906C-D6FF9 04157C8@cisco.com>
[not found] ` <44864D85-03D1-412E-906C-D6FF904157C8-FYB4Gu1CFyUAvxtiuMwx3w@public.gmane.org>
2010-02-08 22:26 ` Sean Hefty
[not found] ` <F533284C543140B0994C54C83C4AFF2B-Zpru7NauK7drdx17CPfAsdBPR1lH4CV8@public.gmane.org>
2010-02-08 22:28 ` Steve Wise
[not found] ` <4B709008.9020902-7bPotxP6k4+P2YhJcF5u+vpXobYPEAuW@public.gmane.org>
2010-02-08 23:48 ` Sean Hefty
[not found] ` <1966FBDAD40C4EAC8611372D2B15AE84-Zpru7NauK7drdx17CPfAsdBPR1lH4CV8@public.gmane.org>
2010-02-09 0:28 ` Jeff Squyres
2010-02-09 0:30 ` Pradeep Satyanarayana
[not found] ` <4B70ACB6.5070008-23VcF4HTsmIX0ybBhKVfKdBPR1lH4CV8@public.gmane.org>
2010-02-09 0:45 ` Jeff Squyres
[not found] ` <FE273021-D385-45EE-9376-6479A92211AF-FYB4Gu1CFyUAvxtiuMwx3w@public.gmane.org>
2010-02-09 0:50 ` Pradeep Satyanarayana
[not found] ` <4B70B152.4080308-23VcF4HTsmIX0ybBhKVfKdBPR1lH4CV8@public.gmane.org>
2010-02-09 1:02 ` Jeff Squyres
2010-02-09 0:41 ` [PATCH] [for-2.6.33] rdma/cm: revert associating an RDMA device when binding to loopback Sean Hefty
[not found] ` <421D3D6710E847C5B7CAC00EB73117C4-Zpru7NauK7drdx17CPfAsdBPR1lH4CV8@public.gmane.org>
2010-02-09 15:29 ` Steve Wise
[not found] ` <4B717F5D.8020403-7bPotxP6k4+P2YhJcF5u+vpXobYPEAuW@public.gmane.org>
2010-02-09 16:15 ` Pradeep Satyanarayana
[not found] ` <4B718A2C.2030602-23VcF4HTsmIX0ybBhKVfKdBPR1lH4CV8@public.gmane.org>
2010-02-09 16:18 ` Steve Wise
[not found] ` <4B718ADB.5020602-7bPotxP6k4+P2YhJcF5u+vpXobYPEAuW@public.gmane.org>
2010-02-09 16:23 ` Sean Hefty
2010-02-09 22:01 ` Jeff Squyres
[not found] ` <4FA7F42E-308A-4A4D-82D8-87794CB8C4DE-FYB4Gu1CFyUAvxtiuMwx3w@public.gmane.org>
2010-02-09 22:17 ` [ewg] " Jason Gunthorpe
2010-02-09 22:20 ` Sean Hefty
2010-02-10 18:10 ` [PATCH] [for-2.6.33] " Roland Dreier
[not found] ` <ada6365hsgm.fsf-BjVyx320WGW9gfZ95n9DRSW4+XlvGpQz@public.gmane.org>
2010-02-10 18:18 ` Steve Wise
2010-02-10 19:13 ` Sean Hefty
2010-02-09 16:32 ` [PATCH] [for-2.6.33] rdma/cm: disallow loopback address for iwarp devices Sean Hefty
[not found] <4B6B47D0.9030507@aoot.com>
[not found] ` <4B6B47D0.9030507-10udUCx4aRo@public.gmane.org>
2010-02-04 22:33 ` bug 1918 - openmpi broken due to rdma-cm changes Sean Hefty
[not found] ` <DE586AB7003E4FC4B3850004A0B3CAF6-Zpru7NauK7drdx17CPfAsdBPR1lH4CV8@public.gmane.org>
2010-02-04 22:39 ` Steve Wise
[not found] ` <4B6B4C9B.8070804-7bPotxP6k4+P2YhJcF5u+vpXobYPEAuW@public.gmane.org>
2010-02-04 22:42 ` Sean Hefty
[not found] ` <EEF75E01C32544C688989E66FECDC422-Zpru7NauK7drdx17CPfAsdBPR1lH4CV8@public.gmane.org>
2010-02-04 22:49 ` Steve Wise
[not found] ` <4B6B4EFE.3010205-7bPotxP6k4+P2YhJcF5u+vpXobYPEAuW@public.gmane.org>
2010-02-04 22:54 ` Sean Hefty
[not found] ` <DB361897EE7C40C5AB494AAC2D8625AC-Zpru7NauK7drdx17CPfAsdBPR1lH4CV8@public.gmane.org>
2010-02-04 23:04 ` Steve Wise
[not found] ` <4B6B5277.80307-7bPotxP6k4+P2YhJcF5u+vpXobYPEAuW@public.gmane.org>
2010-02-04 23:35 ` Roland Dreier
[not found] ` <aday6j8efqs.fsf-BjVyx320WGW9gfZ95n9DRSW4+XlvGpQz@public.gmane.org>
2010-02-04 23:44 ` Steve Wise
[not found] ` <4B6B5BD7.9090301-7bPotxP6k4+P2YhJcF5u+vpXobYPEAuW@public.gmane.org>
2010-02-04 23:50 ` Roland Dreier
[not found] ` <adatytwef1i.fsf-BjVyx320WGW9gfZ95n9DRSW4+XlvGpQz@public.gmane.org>
2010-02-05 0:03 ` Paul Grun
2010-02-04 22:55 ` Steve Wise
[not found] ` <4B6B5048.5020707-7bPotxP6k4+P2YhJcF5u+vpXobYPEAuW@public.gmane.org>
2010-02-04 22:56 ` Sean Hefty
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