From mboxrd@z Thu Jan 1 00:00:00 1970 From: Roland Dreier Subject: Re: [RFC][PATCH 1/1] cxgb3i: cxgb3 iSCSI initiator Date: Mon, 11 Aug 2008 14:37:59 -0700 Message-ID: References: <20080809.224725.130946315.davem@davemloft.net> <20080811.140918.213422266.davem@davemloft.net> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: jgarzik@pobox.com, swise@opengridcomputing.com, divy@chelsio.com, kxie@chelsio.com, netdev@vger.kernel.org, open-iscsi@googlegroups.com, michaelc@cs.wisc.edu, daisyc@us.ibm.com, wenxiong@us.ibm.com, bhua@us.ibm.com, dm@chelsio.com, leedom@chelsio.com, linux-scsi@vger.kernel.org, linux-kernel@vger.kernel.org To: David Miller Return-path: Received: from sj-iport-6.cisco.com ([171.71.176.117]:21545 "EHLO sj-iport-6.cisco.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751933AbYHKViF (ORCPT ); Mon, 11 Aug 2008 17:38:05 -0400 In-Reply-To: <20080811.140918.213422266.davem@davemloft.net> (David Miller's message of "Mon, 11 Aug 2008 14:09:18 -0700 (PDT)") Sender: netdev-owner@vger.kernel.org List-ID: > But as Herbert says, we can make LRO such that turning it off > isn't necessary. > > Can we shape the iSCSI offload traffic without turning it off? Sure... the same way we can ask the HW vendors to keep old headers around when aggregating for LRO, we can ask HW vendors for hooks for shaping iSCSI traffic. And the Chelsio TCP speed record seems to show that they already have pretty sophisticated queueing/shaping in their current HW. - R.