Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S964781AbWHCPX7 (ORCPT ); Thu, 3 Aug 2006 11:23:59 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S964780AbWHCPX7 (ORCPT ); Thu, 3 Aug 2006 11:23:59 -0400 Received: from relay.2ka.mipt.ru ([194.85.82.65]:15814 "EHLO 2ka.mipt.ru") by vger.kernel.org with ESMTP id S964777AbWHCPX6 (ORCPT ); Thu, 3 Aug 2006 11:23:58 -0400 Date: Thu, 3 Aug 2006 19:23:42 +0400 From: Evgeniy Polyakov To: Krzysztof Oledzki Cc: Arnd Hannemann , linux-kernel@vger.kernel.org, netdev@vger.kernel.org Subject: Re: problems with e1000 and jumboframes Message-ID: <20060803152342.GC14774@2ka.mipt.ru> References: <44D1FEB7.2050703@arndnet.de> <20060803135925.GA28348@2ka.mipt.ru> <44D20A2F.3090005@arndnet.de> <20060803150330.GB12915@2ka.mipt.ru> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: User-Agent: Mutt/1.5.9i X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-1.7.5 (2ka.mipt.ru [0.0.0.0]); Thu, 03 Aug 2006 19:23:43 +0400 (MSD) Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 786 Lines: 23 On Thu, Aug 03, 2006 at 05:08:51PM +0200, Krzysztof Oledzki (olel@ans.pl) wrote: > >then skb_alloc adds a little > >(sizeof(struct skb_shared_info)) at the end, and this ends up > >in 32k request just for 9k jumbo frame. > > Strange, why this skb_shared_info cannon be added before first alignment? > And what about smaller frames like 1500, does this driver behave similar > (first align then add)? e1000 aligns it to 2k, which will be transformed into 4k allocation. > Best regards, > > Krzysztof Olędzki -- Evgeniy Polyakov - 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/