From: Roland Dreier <rdreier-FYB4Gu1CFyUAvxtiuMwx3w@public.gmane.org>
To: Suresh Shelvapille
<suri-lFb5ksp6isWhEniVeURVKkEOCMrvLtNR@public.gmane.org>
Cc: 'Ralph Campbell'
<ralph.campbell-h88ZbnxC6KDQT0dZR+AlfA@public.gmane.org>,
linux-rdma-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
Subject: Re: How to know if SRQ is being used in SRP?
Date: Thu, 05 Aug 2010 11:16:02 -0700 [thread overview]
Message-ID: <adar5id3oyl.fsf@roland-alpha.cisco.com> (raw)
In-Reply-To: <D8F95421ED674F1DAC3A9A471854A748-+IkoAhRkys/CbFgIbBqbbjGjJy/sRE9J@public.gmane.org> (Suresh Shelvapille's message of "Thu, 5 Aug 2010 14:05:56 -0400")
> I am told that the customer has modified the SRP code, which is why I cannot go by the ib_srp.c code.
Can you not ask the customer?? Or if you have the object code, look for
calls to srq functions in the binary??
> 1. Would the Syndrome field show CC INVALID if SRQ were being used?
> If so, in which IB message would it show---RDMA read response, or in
> an initial RC SEND message or both?
As I said before, the implication is only one way. If end-to-end flow
control is not used, that does not imply anything -- the CM protocol
allows flow control to be turned off even if an SRQ is not used.
- R.
--
Roland Dreier <rolandd-FYB4Gu1CFyUAvxtiuMwx3w@public.gmane.org> || For corporate legal information go to:
http://www.cisco.com/web/about/doing_business/legal/cri/index.html
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next prev parent reply other threads:[~2010-08-05 18:16 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-08-03 14:02 [PATCH v2] IB/srp: use multiple CPU cores more effectively Bart Van Assche
[not found] ` <201008031602.37294.bvanassche-HInyCGIudOg@public.gmane.org>
2010-08-04 19:45 ` Vladislav Bolkhovitin
[not found] ` <4C59C34F.2000400-d+Crzxg7Rs0@public.gmane.org>
2010-08-04 20:40 ` Roland Dreier
[not found] ` <adak4o66rir.fsf-BjVyx320WGW9gfZ95n9DRSW4+XlvGpQz@public.gmane.org>
2010-08-05 10:55 ` Bart Van Assche
[not found] ` <AANLkTikswdOfqoZOmSqmug4ue3KLv3V8NH9W1ME4tnfQ-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2010-08-05 16:38 ` How to know if SRQ is being used in SRP? Suresh Shelvapille
[not found] ` <8BAAFD34FEF6492A8E3B43698E454B3D-+IkoAhRkys/CbFgIbBqbbjGjJy/sRE9J@public.gmane.org>
2010-08-05 17:42 ` Ralph Campbell
[not found] ` <1281030129.7414.16.camel-/vjeY7uYZjrPXfVEPVhPGq6RkeBMCJyt@public.gmane.org>
2010-08-05 18:05 ` Suresh Shelvapille
[not found] ` <D8F95421ED674F1DAC3A9A471854A748-+IkoAhRkys/CbFgIbBqbbjGjJy/sRE9J@public.gmane.org>
2010-08-05 18:16 ` Roland Dreier [this message]
2010-08-05 18:08 ` Roland Dreier
2010-08-05 16:58 ` [PATCH v2] IB/srp: use multiple CPU cores more effectively Roland Dreier
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