Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933760AbXINQJ0 (ORCPT ); Fri, 14 Sep 2007 12:09:26 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1759168AbXINQJQ (ORCPT ); Fri, 14 Sep 2007 12:09:16 -0400 Received: from sj-iport-3-in.cisco.com ([171.71.176.72]:20757 "EHLO sj-iport-3.cisco.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754077AbXINQJO (ORCPT ); Fri, 14 Sep 2007 12:09:14 -0400 X-IronPort-AV: E=Sophos;i="4.20,256,1186383600"; d="scan'208";a="524063503" To: Shirley Ma Cc: general@lists.openfabrics.org, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, netdev-owner@vger.kernel.org Subject: Re: InfiniBand/RDMA merge plans for 2.6.24 X-Message-Flag: Warning: May contain useful information References: From: Roland Dreier Date: Fri, 14 Sep 2007 09:09:13 -0700 In-Reply-To: (Shirley Ma's message of "Thu, 13 Sep 2007 15:16:40 -0700") Message-ID: User-Agent: Gnus/5.1008 (Gnus v5.10.8) XEmacs/21.4.20 (linux) MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-OriginalArrivalTime: 14 Sep 2007 16:09:13.0512 (UTC) FILETIME=[97A1BA80:01C7F6E9] Authentication-Results: sj-dkim-4; header.From=rdreier@cisco.com; dkim=pass ( sig from cisco.com/sjdkim4002 verified; ); Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 732 Lines: 17 > The patch is just needed to pick up broadcast MTU size instead of hard > coding 2K right now. SKB allocation shouldn't be different with Ethernet > Jambo Frame and IPoIB-CM which 64K MTU. I don't understand why it's > different. Could you please explain this? It's exactly the same problem as ethernet jumbo frames. A web search for '"order 1" failure e1000' might be interesting. IPoIB CM handles this properly by gathering together single pages in skbs' fragment lists. - R. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/