From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jarek Poplawski Subject: Re: [PATCH] TX_RING and packet mmap Date: Wed, 6 May 2009 07:07:10 +0000 Message-ID: <20090506070710.GB4571@ff.dom.local> References: <1241559489.5921.13.camel@bender> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: netdev@vger.kernel.org, Herbert Xu , "David S. Miller" , Patrick McHardy , jamal , Christoph Lameter , Evgeniy Polyakov To: Johann Baudy Return-path: Received: from qw-out-2122.google.com ([74.125.92.26]:19210 "EHLO qw-out-2122.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751014AbZEFHHS (ORCPT ); Wed, 6 May 2009 03:07:18 -0400 Received: by qw-out-2122.google.com with SMTP id 5so4080222qwd.37 for ; Wed, 06 May 2009 00:07:18 -0700 (PDT) Content-Disposition: inline In-Reply-To: <1241559489.5921.13.camel@bender> Sender: netdev-owner@vger.kernel.org List-ID: On 05-05-2009 23:38, Johann Baudy wrote: > From: Johann Baudy > > New packet socket feature that makes packet socket more efficient for transmission. > - It reduces number of system call through a PACKET_TX_RING mechanism, based on PACKET_RX_RING (Circular buffer allocated in kernel space which is mmapped from user space). > - It minimizes CPU copy using fragmented SKB (almost zero copy). > > Signed-off-by: Johann Baudy > > -- > Update: FYI, this patch is malformed by your mta. Jarek P.