From mboxrd@z Thu Jan 1 00:00:00 1970 From: Tom Tucker Subject: Re: RDMA will be reverted Date: Thu, 06 Jul 2006 12:36:24 -0500 Message-ID: <1152207384.20248.104.camel@trinity.ogc.int> References: Mime-Version: 1.0 Content-Type: text/plain Content-Transfer-Encoding: 7bit Cc: davem@davemloft.net, rdreier@cisco.com, netdev@vger.kernel.org, akpm@osdl.org Return-path: Received: from es335.com ([67.65.19.105]:54870 "EHLO mail.es335.com") by vger.kernel.org with ESMTP id S1030336AbWGFRg2 (ORCPT ); Thu, 6 Jul 2006 13:36:28 -0400 To: Herbert Xu In-Reply-To: Sender: netdev-owner@vger.kernel.org List-Id: netdev.vger.kernel.org On Fri, 2006-07-07 at 00:08 +1000, Herbert Xu wrote: > Tom Tucker wrote: > > > > All that said, the proposed patch helps not only iWARP, but other > > transports (iSCSI, IB) as well. It is not large, invasive, > > Care to explain on how it helps those other technologies? The RDMA CMA uses IP addresses and port numbers to create a uniform addressing scheme across all transport types. For IB, it is necessary to resolve IP addresses to IB GIDs. The ARP protocol is used to do this and a netfilter rule is installed to snoop the incoming ARP replies. This would not be necessary if ARP events were provided as in the patch. Unified wire iSCSI adapters have the same issue as iWARP wrt to managing IP addresses and ports. > > Cheers,