From: Bob Pearson <rpearson-klaOcWyJdxkshyMvu7JE4pqQE7yCjDx5@public.gmane.org>
To: Or Gerlitz <ogerlitz-smomgflXvOZWk0Htik3J/w@public.gmane.org>
Cc: "linux-rdma-u79uwXL29TY76Z2rM5mHXA@public.gmane.org"
<linux-rdma-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>
Subject: Re: [PATCH v2] rdma/ib_pack.h: add new bth opcodes
Date: Mon, 16 Aug 2010 11:23:06 -0500 [thread overview]
Message-ID: <4C6965EA.2050208@systemfabricworks.com> (raw)
In-Reply-To: <4C639635.4090704-smomgflXvOZWk0Htik3J/w@public.gmane.org>
On 08/12/2010 01:35 AM, Or Gerlitz wrote:
> Bob Pearson wrote:
>> I was wondering if I could use this to cause ConnectX RDMAoE senders
>> to slow down in response to these packets. There is a challenge
>> managing fast ROCE senders in networks that may not fully implement
>> per priority pause.
> Hi Bob,
>
> QCN (IEEE 802.1 based Ethernet congestion control mechanism) can apply
> for IBoE traffic, in the same manner it would for FCoE, IP etc. Is
> there a specific reason you wanted to apply the IB mechanism and not
> use the Ethernet one? Yep, PFC is helpful.
>
> Or.
>
Hi Or,
As I mentioned I did not pursue this. I was curious to see if I could
force a ConnectX device to slow down from a remote application. But
since the MADs have been crippled for IBOE there is no way to configure it.
Bob
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next prev parent reply other threads:[~2010-08-16 16:23 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <4C62F86C.6060504@systemfabricworks.com>
[not found] ` <4C62F86C.6060504-klaOcWyJdxkshyMvu7JE4pqQE7yCjDx5@public.gmane.org>
2010-08-12 6:35 ` [PATCH v2] rdma/ib_pack.h: add new bth opcodes Or Gerlitz
[not found] ` <4C639635.4090704-smomgflXvOZWk0Htik3J/w@public.gmane.org>
2010-08-16 16:23 ` Bob Pearson [this message]
[not found] ` <4C6965EA.2050208-klaOcWyJdxkshyMvu7JE4pqQE7yCjDx5@public.gmane.org>
2010-08-19 8:54 ` Or Gerlitz
[not found] ` <4C6CF139.1020405-hKgKHo2Ms0FWk0Htik3J/w@public.gmane.org>
2010-08-19 9:34 ` Eli Cohen
[not found] ` <OFD964C280.7B7E4A90-ONC1257784.0038AAF8-C1257784.0039E842@ch.ibm.com>
[not found] ` <OFD964C280.7B7E4A90-ONC1257784.0038AAF8-C1257784.0039E842-Xeyd2O9EBijQT0dZR+AlfA@public.gmane.org>
2010-08-19 10:41 ` IBoE and congestion management Or Gerlitz
2010-08-09 5:39 FW: [PATCH v2] rdma/ib_pack.h: add new bth opcodes Robert Pearson
2010-08-09 23:36 ` Hefty, Sean
[not found] ` <CF9C39F99A89134C9CF9C4CCB68B8DDF25A954BCAF-osO9UTpF0USkrb+BlOpmy7fspsVTdybXVpNB7YpNyf8@public.gmane.org>
2010-08-10 15:16 ` Bob Pearson
[not found] ` <4C616D38.7090506-klaOcWyJdxkshyMvu7JE4pqQE7yCjDx5@public.gmane.org>
2010-08-11 7:12 ` Or Gerlitz
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