From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from ozlabs.org (ozlabs.org [203.10.76.45]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client CN "mx.ozlabs.org", Issuer "CA Cert Signing Authority" (verified OK)) by bilbo.ozlabs.org (Postfix) with ESMTPS id 8A51AB7067 for ; Wed, 8 Jul 2009 04:57:31 +1000 (EST) Received: from g5t0008.atlanta.hp.com (g5t0008.atlanta.hp.com [15.192.0.45]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client CN "bastion.smtp.hp.com", Issuer "VeriSign Class 3 Secure Server CA" (verified OK)) by ozlabs.org (Postfix) with ESMTPS id 3DABBDDD1B for ; Wed, 8 Jul 2009 04:57:31 +1000 (EST) Message-ID: <4A53984A.4050002@hp.com> Date: Tue, 07 Jul 2009 11:47:38 -0700 From: Rick Jones MIME-Version: 1.0 To: Anton Vorontsov Subject: Re: [PATCH] ucc_geth: Add support for skb recycling References: <20090707183842.GA8425@oksana.dev.rtsoft.ru> In-Reply-To: <20090707183842.GA8425@oksana.dev.rtsoft.ru> Content-Type: text/plain; charset=us-ascii; format=flowed Cc: netdev@vger.kernel.org, Li Yang , Andy Fleming , David Miller , linuxppc-dev@ozlabs.org List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Anton Vorontsov wrote: > We can reclaim transmitted skbs to use in the receive path, so-called > skb recycling support. > > Also reorder ucc_geth_poll() steps, so that we'll clean tx ring firstly, > thus maybe reclaim some skbs for rx. Admittedly, all the world is not TCP, but a big chunk is, so are you likely to have reference counts go to zero on the tx queue for anything other than small standalone TCP ACK segments? rick jones