From: "Hefty, Sean" <sean.hefty-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
To: Liran Liss <liranl-VPRAkNaXOzVS1MOuV/RT9w@public.gmane.org>,
Roland Dreier <rdreier-FYB4Gu1CFyUAvxtiuMwx3w@public.gmane.org>,
Aleksey Senin <aleksey-192fA4vuk7xBDLzU/O5InQ@public.gmane.org>
Cc: linux-rdma <linux-rdma-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>,
"monis-smomgflXvOZWk0Htik3J/w@public.gmane.org"
<monis-smomgflXvOZWk0Htik3J/w@public.gmane.org>,
"alekseys-smomgflXvOZWk0Htik3J/w@public.gmane.org"
<alekseys-smomgflXvOZWk0Htik3J/w@public.gmane.org>,
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<yiftahs-smomgflXvOZWk0Htik3J/w@public.gmane.org>,
Tziporet Koren <tziporet-VPRAkNaXOzVS1MOuV/RT9w@public.gmane.org>,
"alexr-smomgflXvOZWk0Htik3J/w@public.gmane.org"
<alexr-smomgflXvOZWk0Htik3J/w@public.gmane.org>
Subject: RE: When IBoE will be merged to upstream?
Date: Thu, 24 Jun 2010 11:05:30 -0700 [thread overview]
Message-ID: <CF9C39F99A89134C9CF9C4CCB68B8DDF259E7DE3D0@orsmsx501.amr.corp.intel.com> (raw)
In-Reply-To: <E113D394D7C5DB4F8FF691FA7EE9DB4439A78AFE88-WQlSmcKwN8Te+A/uUDamNg@public.gmane.org>
> Regarding GID to Eth mappings, we discussed using the standard create_ah()
> Verb for this.
> In the kernel, create_ah() will call a generic address resolution function
> in the cma.
> The returned information will be copied back to user-space in a device-
> specific structure (since address handles are device-specific).
>
> This eliminates adding a new get_eth_l2_addr() ABI call (device-specific or
> not).
> In fact, this approach eliminates adding new ABIs for any kind of address
> translation...
>
> Does this seem reasonable?
The current behavior of ibv_create_ah() requires that the caller provide the L2, and if needed, L3 addressing. Any translation between the L3 and L2 addressing must be done before the call is made. E.g. ibv_create_ah does not use the GID to query the SA to obtain LIDs. Why doesn't IBoE follow this same model?
Callers can use some out of band mechanism for the mapping, call rdma_resolve_addr, or use some standard networking routine.
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next prev parent reply other threads:[~2010-06-24 18:05 UTC|newest]
Thread overview: 40+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-06-20 6:18 When IBoE will be merged to upstream? Aleksey Senin
[not found] ` <AANLkTikXzoaRl61ivsc7fm8EdO9Ucz4iGGfclFOQl3kK-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2010-06-23 23:23 ` Roland Dreier
[not found] ` <adabpb1s58c.fsf-BjVyx320WGW9gfZ95n9DRSW4+XlvGpQz@public.gmane.org>
2010-06-24 15:42 ` Liran Liss
[not found] ` <E113D394D7C5DB4F8FF691FA7EE9DB4439A78AFE88-WQlSmcKwN8Te+A/uUDamNg@public.gmane.org>
2010-06-24 18:05 ` Hefty, Sean [this message]
[not found] ` <CF9C39F99A89134C9CF9C4CCB68B8DDF259E7DE3D0-osO9UTpF0USkrb+BlOpmy7fspsVTdybXVpNB7YpNyf8@public.gmane.org>
2010-06-24 18:41 ` Liran Liss
[not found] ` <E113D394D7C5DB4F8FF691FA7EE9DB4439A78AFF16-WQlSmcKwN8Te+A/uUDamNg@public.gmane.org>
2010-06-24 20:37 ` Jason Gunthorpe
[not found] ` <20100624203701.GA4630-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>
2010-06-25 8:04 ` Liran Liss
[not found] ` <E113D394D7C5DB4F8FF691FA7EE9DB4439A78B0042-WQlSmcKwN8Te+A/uUDamNg@public.gmane.org>
2010-06-25 15:57 ` Jason Gunthorpe
[not found] ` <20100625155755.GC4630-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>
2010-06-25 16:54 ` Hefty, Sean
2010-07-01 11:50 ` Liran Liss
[not found] ` <E113D394D7C5DB4F8FF691FA7EE9DB4439BA54B70E-WQlSmcKwN8Te+A/uUDamNg@public.gmane.org>
2010-07-02 0:20 ` Hefty, Sean
[not found] ` <CF9C39F99A89134C9CF9C4CCB68B8DDF25A1002175-osO9UTpF0USkrb+BlOpmy7fspsVTdybXVpNB7YpNyf8@public.gmane.org>
2010-07-02 7:42 ` Jason Gunthorpe
2010-07-02 7:35 ` Jason Gunthorpe
2010-07-03 20:34 ` Roland Dreier
[not found] ` <adak4pcnw3c.fsf-BjVyx320WGW9gfZ95n9DRSW4+XlvGpQz@public.gmane.org>
2010-07-04 17:03 ` Liran Liss
[not found] ` <E113D394D7C5DB4F8FF691FA7EE9DB443A8E048000-WQlSmcKwN8Te+A/uUDamNg@public.gmane.org>
2010-07-06 6:44 ` Or Gerlitz
[not found] ` <4C32D0BD.3030902-hKgKHo2Ms0FWk0Htik3J/w@public.gmane.org>
2010-07-06 11:01 ` Liran Liss
[not found] ` <E113D394D7C5DB4F8FF691FA7EE9DB443A8E2E552A-WQlSmcKwN8Te+A/uUDamNg@public.gmane.org>
2010-07-07 6:00 ` Or Gerlitz
[not found] ` <4C3417FA.7000600-hKgKHo2Ms0FWk0Htik3J/w@public.gmane.org>
2010-07-07 6:13 ` Jason Gunthorpe
2010-07-10 8:55 ` Liran Liss
[not found] ` <E113D394D7C5DB4F8FF691FA7EE9DB443AAB6D59C0-WQlSmcKwN8Te+A/uUDamNg@public.gmane.org>
2010-07-11 4:34 ` Jason Gunthorpe
[not found] ` <20100711043449.GA31404-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>
2010-07-12 7:58 ` Liran Liss
[not found] ` <E113D394D7C5DB4F8FF691FA7EE9DB443AACB08EA5-WQlSmcKwN8Te+A/uUDamNg@public.gmane.org>
2010-07-12 16:21 ` Jason Gunthorpe
[not found] ` <20100712162131.GB15392-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>
2010-07-13 8:26 ` Liran Liss
[not found] ` <E113D394D7C5DB4F8FF691FA7EE9DB443AACDEE865-WQlSmcKwN8Te+A/uUDamNg@public.gmane.org>
2010-07-13 19:31 ` Jason Gunthorpe
[not found] ` <20100713193138.GA12614-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>
2010-07-15 10:55 ` Liran Liss
[not found] ` <E113D394D7C5DB4F8FF691FA7EE9DB443ABB321006-WQlSmcKwN8Te+A/uUDamNg@public.gmane.org>
2010-07-15 16:59 ` Jason Gunthorpe
2010-07-20 5:28 ` Paul Grun
2010-07-20 17:06 ` Jason Gunthorpe
2010-07-12 16:43 ` Hefty, Sean
2010-07-12 21:20 ` Roland Dreier
[not found] ` <adatyo4xuqx.fsf-BjVyx320WGW9gfZ95n9DRSW4+XlvGpQz@public.gmane.org>
2010-07-13 19:38 ` Jason Gunthorpe
[not found] ` <20100713193828.GB12614-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>
2010-07-13 21:20 ` Roland Dreier
[not found] ` <ada8w5fxenn.fsf-BjVyx320WGW9gfZ95n9DRSW4+XlvGpQz@public.gmane.org>
2010-07-15 11:14 ` Liran Liss
[not found] ` <E113D394D7C5DB4F8FF691FA7EE9DB443ABB321050-WQlSmcKwN8Te+A/uUDamNg@public.gmane.org>
2010-07-15 17:21 ` Roland Dreier
[not found] ` <adalj9cveyd.fsf-BjVyx320WGW9gfZ95n9DRSW4+XlvGpQz@public.gmane.org>
2010-07-15 17:53 ` Roland Dreier
2010-07-15 19:20 ` Alex Rosenbaum
[not found] ` <7E95F01E94AB484F83061FCFA35B39F87A7D2C-QfUkFaTmzUSUvQqKE/ONIwC/G2K4zDHf@public.gmane.org>
2010-07-15 20:03 ` Roland Dreier
[not found] ` <ada1vb4v7fl.fsf-BjVyx320WGW9gfZ95n9DRSW4+XlvGpQz@public.gmane.org>
2010-07-20 20:50 ` Liran Liss
2010-07-15 11:00 ` Liran Liss
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