From mboxrd@z Thu Jan 1 00:00:00 1970 From: Stephen Hemminger Subject: Re: [PATCH] sky2: safer transmit ring cleaning Date: Tue, 12 Jan 2010 09:02:02 -0800 Message-ID: <20100112090202.6adf2370@nehalam> References: <20100112.000804.186755338.davem@davemloft.net> <20100112085633.GB6628@ff.dom.local> <20100112.014218.112731835.davem@davemloft.net> <20100112.025620.210305029.davem@davemloft.net> <20100112081513.0175d579@nehalam> <4B4CA42D.5020305@majjas.com> Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Cc: David Miller , jarkao2@gmail.com, mikem@ring3k.org, flyboy@gmail.com, rjw@sisk.pl, netdev@vger.kernel.org To: Michael Breuer Return-path: Received: from mail.vyatta.com ([76.74.103.46]:46312 "EHLO mail.vyatta.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752082Ab0ALRCe (ORCPT ); Tue, 12 Jan 2010 12:02:34 -0500 In-Reply-To: <4B4CA42D.5020305@majjas.com> Sender: netdev-owner@vger.kernel.org List-ID: On Tue, 12 Jan 2010 11:32:45 -0500 Michael Breuer wrote: > On 01/12/2010 11:15 AM, Stephen Hemminger wrote: > > This code makes transmit path and transmit reset safer by: > > * adding memory barrier before checking available ring slots > > * reseting state of tx ring elements after free > > * seperate cleanup function from ring done function > > * removing mostly unused tx_next element > > > > > > > Stephen, > > Just want to confirm that this supersedes both of the patches I'm > currently running with: > > 1. skb_may_pull > 2. Nash patch You want: 1. AF_PACKET patch that makes sure skb is not modified after send 2. This patch.