From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <chrisw@redhat.com>
Received: from mx1.redhat.com (mx1.redhat.com [209.132.183.28])
 by dpdk.org (Postfix) with ESMTP id AA2675323
 for <dev@dpdk.org>; Fri,  6 Jun 2014 22:06:08 +0200 (CEST)
Received: from int-mx14.intmail.prod.int.phx2.redhat.com
 (int-mx14.intmail.prod.int.phx2.redhat.com [10.5.11.27])
 by mx1.redhat.com (8.14.4/8.14.4) with ESMTP id s56K6L8R032164
 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK);
 Fri, 6 Jun 2014 16:06:21 -0400
Received: from x220.localdomain ([10.3.113.19])
 by int-mx14.intmail.prod.int.phx2.redhat.com (8.14.4/8.14.4) with SMTP id
 s56K6Koj000457; Fri, 6 Jun 2014 16:06:21 -0400
Date: Fri, 6 Jun 2014 13:06:20 -0700
From: Chris Wright <chrisw@redhat.com>
To: "John W. Linville" <linville@tuxdriver.com>
Message-ID: <20140606200620.GU16092@x220.localdomain>
References: <1402082754-12921-1-git-send-email-linville@tuxdriver.com>
 <20140606194748.GT16092@x220.localdomain>
 <20140606195706.GB13595@tuxdriver.com>
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <20140606195706.GB13595@tuxdriver.com>
User-Agent: Mutt/1.5.21+63 (2f2ebc24920d) (2011-07-01)
X-Scanned-By: MIMEDefang 2.68 on 10.5.11.27
Cc: dev@dpdk.org
Subject: Re: [dpdk-dev] [RFC] librte_pmd_packet: add PMD for AF_PACKET-based
 virtual devices
X-BeenThere: dev@dpdk.org
X-Mailman-Version: 2.1.15
Precedence: list
List-Id: patches and discussions about DPDK <dev.dpdk.org>
List-Unsubscribe: <http://dpdk.org/ml/options/dev>,
 <mailto:dev-request@dpdk.org?subject=unsubscribe>
List-Archive: <http://dpdk.org/ml/archives/dev/>
List-Post: <mailto:dev@dpdk.org>
List-Help: <mailto:dev-request@dpdk.org?subject=help>
List-Subscribe: <http://dpdk.org/ml/listinfo/dev>,
 <mailto:dev-request@dpdk.org?subject=subscribe>
X-List-Received-Date: Fri, 06 Jun 2014 20:06:09 -0000

* John W. Linville (linville@tuxdriver.com) wrote:
> On Fri, Jun 06, 2014 at 12:47:48PM -0700, Chris Wright wrote:
> > * John W. Linville (linville@tuxdriver.com) wrote:
> > > This is a Linux-specific virtual PMD driver backed by an AF_PACKET
> > > socket.  The current implementation uses mmap'ed ring buffers to
> > > limit copying and user/kernel transitions.  The intent is also to take
> > > advantage of fanout and any future AF_PACKET optimizations as well.
> > > 
> > > This is intended to provide a means for using DPDK on a broad range
> > > of hardware without hardware-specifi PMDs and hopefully with better
> > > performance than what PCAP offers in Linux.  This might be useful
> > > as a development platform for DPDK applications when DPDK-supported
> > > hardware is expensive or unavailable.
> > 
> > Nice, have you compared yet w/ PCAP numbers?
> 
> No, sorry -- definitely needs more testing, including performance numbers...

No worries, just curious ;)