From mboxrd@z Thu Jan 1 00:00:00 1970 From: Christoph Lameter Subject: Re: [IPoIB] Identify multicast packets and fix IGMP breakage V3 Date: Thu, 26 Aug 2010 18:57:09 -0500 (CDT) Message-ID: References: <20100826.151553.242147157.davem@davemloft.net> <20100826222146.GA23025@obsidianresearch.com> <20100826234342.GA24333@obsidianresearch.com> Mime-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Cc: rdreier@cisco.com, linux-rdma@vger.kernel.org, ogerlitz@voltaire.com, yosefe@voltaire.com, netdev@vger.kernel.org To: Jason Gunthorpe Return-path: Received: from smtp102.prem.mail.ac4.yahoo.com ([76.13.13.41]:48178 "HELO smtp102.prem.mail.ac4.yahoo.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with SMTP id S1753906Ab0HZX5N (ORCPT ); Thu, 26 Aug 2010 19:57:13 -0400 In-Reply-To: <20100826234342.GA24333@obsidianresearch.com> Sender: netdev-owner@vger.kernel.org List-ID: On Thu, 26 Aug 2010, Jason Gunthorpe wrote: > I think doing the memcmp only in the multicast path should be > reasonable overhead wise. Thats is not always possible. Here the multicast path is the default path that is taken 99% of the time.