From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mga02.intel.com (mga02.intel.com [134.134.136.20]) by dpdk.org (Postfix) with ESMTP id C6B44B3BB for ; Fri, 11 Jul 2014 20:02:25 +0200 (CEST) Received: from orsmga002.jf.intel.com ([10.7.209.21]) by orsmga101.jf.intel.com with ESMTP; 11 Jul 2014 11:02:53 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.01,644,1400050800"; d="scan'208";a="571845962" Received: from fmsmsx107.amr.corp.intel.com ([10.19.9.54]) by orsmga002.jf.intel.com with ESMTP; 11 Jul 2014 11:01:30 -0700 Received: from fmsmsx117.amr.corp.intel.com (10.18.116.17) by FMSMSX107.amr.corp.intel.com (10.19.9.54) with Microsoft SMTP Server (TLS) id 14.3.123.3; Fri, 11 Jul 2014 11:01:29 -0700 Received: from shsmsx102.ccr.corp.intel.com (10.239.4.154) by fmsmsx117.amr.corp.intel.com (10.18.116.17) with Microsoft SMTP Server (TLS) id 14.3.123.3; Fri, 11 Jul 2014 11:01:30 -0700 Received: from shsmsx104.ccr.corp.intel.com ([169.254.5.122]) by shsmsx102.ccr.corp.intel.com ([169.254.2.21]) with mapi id 14.03.0123.003; Sat, 12 Jul 2014 02:01:28 +0800 From: "Zhou, Danny" To: "John W. Linville" Thread-Topic: [dpdk-dev] [PATCH] librte_pmd_packet: add PMD for AF_PACKET-based virtual devices Thread-Index: AQHPnH/oRaQYxTj0SU2+uC1eGA1pJJubHZdggAAAcLD//4FWgIAAikNw Date: Fri, 11 Jul 2014 18:01:27 +0000 Message-ID: References: <1405024369-30058-1-git-send-email-linville@tuxdriver.com> <20140711174042.GE25478@tuxdriver.com> In-Reply-To: <20140711174042.GE25478@tuxdriver.com> Accept-Language: zh-CN, en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [10.239.127.40] Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Cc: "dev@dpdk.org" Subject: Re: [dpdk-dev] [PATCH] 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 List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 11 Jul 2014 18:02:26 -0000 Tried on 3.12, both of them are undefined. Anyway, will comment them out an= d see what performance it could achieve. > -----Original Message----- > From: John W. Linville [mailto:linville@tuxdriver.com] > Sent: Saturday, July 12, 2014 1:41 AM > To: Zhou, Danny > Cc: dev@dpdk.org > Subject: Re: [dpdk-dev] [PATCH] librte_pmd_packet: add PMD for > AF_PACKET-based virtual devices >=20 > On Fri, Jul 11, 2014 at 05:20:42PM +0000, Zhou, Danny wrote: > > Looks like you used a pretty new kernel version with new socket options= that old > kernel like my 3.12 does not support. When I tried this patch, it just ca= nnot build, and > compiler complains like below. Which Linux distribution does this patch w= ork for? > How to ensure it works for old kernels? > > > > /home/danny/dpdk.org/dpdk/lib/librte_pmd_packet/rte_eth_packet.c: In fu= nction > rte_pmd_init_internals: > > /home/danny/dpdk.org/dpdk/lib/librte_pmd_packet/rte_eth_packet.c:524:1 > > 7: error: PACKET_FANOUT_FLAG_ROLLOVER undeclared (first use in this > > function) > > /home/danny/dpdk.org/dpdk/lib/librte_pmd_packet/rte_eth_packet.c:524:1 > > 7: note: each undeclared identifier is reported only once for each > > function it appears in > > /home/danny/dpdk.org/dpdk/lib/librte_pmd_packet/rte_eth_packet.c:557:3 > > 3: error: PACKET_QDISC_BYPASS undeclared (first use in this function) >=20 > Both of them are isolated, so for playing with it you could just comment = those out. > It looks like PACKET_FANOUT_FLAG_ROLLOVER should have been in 3.10, while > PACKET_QDISC_BYPASS didn't show-up until 3.14... >=20 > /home/linville/git/linux > [linville-x1.hq.tuxdriver.com]:> git annotate include/uapi/linux/if_packe= t.h | grep > PACKET_FANOUT_FLAG_ROLLOVER > 77f65ebdca506 (Willem de Bruijn 2013-03-19 10:18:11 +0000 64)#define > PACKET_FANOUT_FLAG_ROLLOVER 0x1000 >=20 > /home/linville/git/linux > [linville-x1.hq.tuxdriver.com]:> git show -s --format=3Dshort 77f65ebdca5= 06 commit > 77f65ebdca506870d99bfabe52bde222511022ec > Author: Willem de Bruijn >=20 > packet: packet fanout rollover during socket overload >=20 > /home/linville/git/linux > [linville-x1.hq.tuxdriver.com]:> git describe --contains 77f65ebdca506 > v3.10-rc1~66^2~423 >=20 > /home/linville/git/linux > [linville-x1.hq.tuxdriver.com]:> git annotate include/uapi/linux/if_packe= t.h | grep > PACKET_QDISC_BYPASS > d346a3fae3ff1 (Daniel Borkmann 2013-12-06 11:36:17 +0100 56)#define > PACKET_QDISC_BYPASS 20 >=20 > /home/linville/git/linux > [linville-x1.hq.tuxdriver.com]:> git show -s --format=3Dshort d346a3fae3f= f1 commit > d346a3fae3ff1d99f5d0c819bf86edf9094a26a1 > Author: Daniel Borkmann >=20 > packet: introduce PACKET_QDISC_BYPASS socket option >=20 > /home/linville/git/linux > [linville-x1.hq.tuxdriver.com]:> git describe --contains d346a3fae3ff1 > v3.14-rc1~94^2~564 >=20 > Is there an example of code in DPDK that requires specific kernel version= s? What is > the preferred method for coding such dependencies? >=20 > John > -- > John W. Linville Someday the world will need a hero, and you > linville@tuxdriver.com might be all we have. Be ready.