From mboxrd@z Thu Jan 1 00:00:00 1970 From: David Miller Subject: Re: [net-next PATCH 1/3] ixgbe: Add support for multiple Tx queues for FCoE in 82599 Date: Thu, 03 Sep 2009 20:08:09 -0700 (PDT) Message-ID: <20090903.200809.212485138.davem@davemloft.net> References: <20090904005549.14869.66878.stgit@localhost.localdomain> Mime-Version: 1.0 Content-Type: Text/Plain; charset=us-ascii Content-Transfer-Encoding: 7bit Cc: netdev@vger.kernel.org, gospo@redhat.com, yi.zou@intel.com To: jeffrey.t.kirsher@intel.com Return-path: Received: from 74-93-104-97-Washington.hfc.comcastbusiness.net ([74.93.104.97]:51015 "EHLO sunset.davemloft.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932823AbZIDDHy (ORCPT ); Thu, 3 Sep 2009 23:07:54 -0400 In-Reply-To: <20090904005549.14869.66878.stgit@localhost.localdomain> Sender: netdev-owner@vger.kernel.org List-ID: From: Jeff Kirsher Date: Thu, 03 Sep 2009 17:55:50 -0700 > From: Yi Zou > > This patch adds support for multiple transmit queues to the Fiber Channel > over Ethernet (FCoE) feature found in 82599. Currently, FCoE has multiple > Rx queues available, along with a redirection table, that helps distribute > the I/O load across multiple CPUs based on the FC exchange ID. To make > this the most effective, we need to provide the same layout of transmit > queues to match receive. > > Particularly, when Data Center Bridging (DCB) is enabled, the designated > traffic class for FCoE can have dedicated queues for just FCoE traffic, > while not affecting any other type of traffic flow. > > Signed-off-by: Yi Zou > Signed-off-by: Jeff Kirsher Applied. So does this eat into the TX queues available to non-FCOE traffic or is this a shared setup?