From mboxrd@z Thu Jan 1 00:00:00 1970 From: Bob Pearson Subject: Re: [PATCH v2] rdma/ib_pack.h: add new bth opcodes Date: Mon, 16 Aug 2010 11:23:06 -0500 Message-ID: <4C6965EA.2050208@systemfabricworks.com> References: <4C62F86C.6060504@systemfabricworks.com> <4C639635.4090704@voltaire.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <4C639635.4090704-smomgflXvOZWk0Htik3J/w@public.gmane.org> Sender: linux-rdma-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: Or Gerlitz Cc: "linux-rdma-u79uwXL29TY76Z2rM5mHXA@public.gmane.org" List-Id: linux-rdma@vger.kernel.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 -- To unsubscribe from this list: send the line "unsubscribe linux-rdma" in the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org More majordomo info at http://vger.kernel.org/majordomo-info.html