From mboxrd@z Thu Jan 1 00:00:00 1970 From: Ben Hutchings Subject: Re: [PATCH 1/2] igb.txt: Add igb documentation Date: Wed, 04 Aug 2010 03:34:34 +0100 Message-ID: <1280889274.13192.565.camel@localhost> References: <20100804001429.6571.95116.stgit@localhost.localdomain> Mime-Version: 1.0 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 7bit Cc: davem@davemloft.net, netdev@vger.kernel.org, linux-kernel@vger.kernel.org, gospo@redhat.com, bphilips@novell.com To: Jeff Kirsher Return-path: Received: from exchange.solarflare.com ([216.237.3.220]:5958 "EHLO exchange.solarflare.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756860Ab0HDCek (ORCPT ); Tue, 3 Aug 2010 22:34:40 -0400 In-Reply-To: <20100804001429.6571.95116.stgit@localhost.localdomain> Sender: netdev-owner@vger.kernel.org List-ID: On Tue, 2010-08-03 at 17:15 -0700, Jeff Kirsher wrote: [...] > + Jumbo Frames > + ------------ > + Jumbo Frames support is enabled by changing the MTU to a value larger than > + the default of 1500. Use the ifconfig command to increase the MTU size. > + For example: > + > + ifconfig eth mtu 9000 up > + > + This setting is not saved across reboots. Not igb-specific. [...] > + Ethtool > + ------- > + The driver utilizes the ethtool interface for driver configuration and > + diagnostics, as well as displaying statistical information. Ethtool > + version 3.0 or later is required for this functionality, although we > + strongly recommend downloading the latest version at: > + > + http://sourceforge.net/projects/gkernel. Not igb-specific, and seriously - 3.0? > + Enabling Wake on LAN* (WoL) > + --------------------------- > + WoL is configured through the Ethtool* utility. Not igb-specific. [...] > + LRO > + --- > + Large Receive Offload (LRO) is a technique for increasing inbound throughput > + of high-bandwidth network connections by reducing CPU overhead. It works by > + aggregating multiple incoming packets from a single stream into a larger > + buffer before they are passed higher up the networking stack, thus reducing > + the number of packets that have to be processed. LRO combines multiple > + Ethernet frames into a single receive in the stack, thereby potentially > + decreasing CPU utilization for receives. Not igb-specific. > + NOTE: LRO requires 2.6.24 or later kernel version. [...] Which is irrelevant to an in-tree driver. Ben. -- Ben Hutchings, Senior Software Engineer, Solarflare Communications Not speaking for my employer; that's the marketing department's job. They asked us to note that Solarflare product names are trademarked.