From mboxrd@z Thu Jan 1 00:00:00 1970 From: David Miller Subject: Re: [PATCH] chelsio: add headroom in RX path Date: Wed, 20 Mar 2013 13:29:52 -0400 (EDT) Message-ID: <20130320.132952.1733436957649049289.davem@davemloft.net> References: <1363797199.3333.18.camel@edumazet-glaptop> Mime-Version: 1.0 Content-Type: Text/Plain; charset=us-ascii Content-Transfer-Encoding: 7bit Cc: netdev@vger.kernel.org To: eric.dumazet@gmail.com Return-path: Received: from shards.monkeyblade.net ([149.20.54.216]:59123 "EHLO shards.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751539Ab3CTR3z (ORCPT ); Wed, 20 Mar 2013 13:29:55 -0400 In-Reply-To: <1363797199.3333.18.camel@edumazet-glaptop> Sender: netdev-owner@vger.kernel.org List-ID: From: Eric Dumazet Date: Wed, 20 Mar 2013 09:33:19 -0700 > From: Eric Dumazet > > Drivers should reserve some headroom in skb used in receive path, > to avoid future head reallocation. > > One possible way to do that is to use dev_alloc_skb() instead > of alloc_skb(), so that NET_SKB_PAD bytes are reserved. > > Signed-off-by: Eric Dumazet Applied, thanks Eric.