From mboxrd@z Thu Jan 1 00:00:00 1970 From: YOSHIFUJI Hideaki Subject: Re: [RFC:] struct net_device_ops: Add function pointer to fill device specific ndisc information Date: Mon, 21 Jan 2013 11:29:57 +0900 Message-ID: <50FCA825.7070609@linux-ipv6.org> References: <50FC2EE4.3080705@gmail.com> <50FC3BB1.4070005@linux-ipv6.org> <50FC6068.3020302@gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Cc: linux1394-devel@lists.sourceforge.net, netdev , David Miller To: stephan.gatzka@gmail.com Return-path: Received: from 94.43.138.210.xn.2iij.net ([210.138.43.94]:49423 "EHLO mail.st-paulia.net" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1752568Ab3AUC37 (ORCPT ); Sun, 20 Jan 2013 21:29:59 -0500 In-Reply-To: <50FC6068.3020302@gmail.com> Sender: netdev-owner@vger.kernel.org List-ID: Stephan Gatzka wrote: > On 01/20/2013 07:47 PM, YOSHIFUJI Hideaki wrote: > >> My current position is to change "mac address" to >> >> struct fwnet_hwaddr { >> u8 guid[8]; >> u8 max_rec; >> u8 sspd; >> u8 fifo[6]; >> }; >> > > That is something I'm not really convinced of. As Stefan Richter pointed out clearly, the fifo address might be different between IPv4 and IPv6 communication. We could have multiple "net_device"s per single physical interface at the same time, then. Multicast is a big issue. Because IPv6 is fan of multicast, and it uses link-local multicast as its core infrastructure. Without infrastructure to support it, I'm not going to agree. And, firewire driver does not seem to support zerocopy (fragmented skb) support. It help performance. --yoshfuji