From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mga03.intel.com (mga03.intel.com [134.134.136.65]) by dpdk.org (Postfix) with ESMTP id 3FC31805E for ; Tue, 16 Dec 2014 01:58:20 +0100 (CET) Received: from orsmga001.jf.intel.com ([10.7.209.18]) by orsmga103.jf.intel.com with ESMTP; 15 Dec 2014 16:56:05 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.07,583,1413270000"; d="scan'208";a="624287242" Received: from kmsmsx153.gar.corp.intel.com ([172.21.73.88]) by orsmga001.jf.intel.com with ESMTP; 15 Dec 2014 16:58:18 -0800 Received: from kmsmsx154.gar.corp.intel.com (172.21.73.14) by KMSMSX153.gar.corp.intel.com (172.21.73.88) with Microsoft SMTP Server (TLS) id 14.3.195.1; Tue, 16 Dec 2014 08:58:17 +0800 Received: from shsmsx151.ccr.corp.intel.com (10.239.6.50) by KMSMSX154.gar.corp.intel.com (172.21.73.14) with Microsoft SMTP Server (TLS) id 14.3.195.1; Tue, 16 Dec 2014 08:58:16 +0800 Received: from shsmsx102.ccr.corp.intel.com ([169.254.2.216]) by SHSMSX151.ccr.corp.intel.com ([169.254.3.67]) with mapi id 14.03.0195.001; Tue, 16 Dec 2014 08:58:16 +0800 From: "Ouyang, Changchun" To: "Richardson, Bruce" Thread-Topic: [dpdk-dev] [PATCH 0/6] Enable VF RSS for Niantic Thread-Index: AQHQGBLhIqFrSXpyAEKrboFfEBMi1JyP9PoAgAFuFgA= Date: Tue, 16 Dec 2014 00:58:15 +0000 Message-ID: References: <1418612225-6095-1-git-send-email-changchun.ouyang@intel.com> <20141215105518.GC11332@bricha3-MOBL3> In-Reply-To: <20141215105518.GC11332@bricha3-MOBL3> 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 0/6] Enable VF RSS for Niantic 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: Tue, 16 Dec 2014 00:58:20 -0000 Hi Bruce, > -----Original Message----- > From: Richardson, Bruce > Sent: Monday, December 15, 2014 6:55 PM > To: Ouyang, Changchun > Cc: dev@dpdk.org > Subject: Re: [dpdk-dev] [PATCH 0/6] Enable VF RSS for Niantic >=20 > On Mon, Dec 15, 2014 at 10:56:59AM +0800, Ouyang Changchun wrote: > > This patch enables VF RSS for Niantic, which allow each VF having at mo= st 4 > queues. > > The actual queue number per VF depends on the number of VF: > > VF number from 1~32: 4 queues per VF; > > VF number from 33~max vf num: 2 queues per VF; > > > > On host, to enable VF RSS functionality, mq mode should be set as > > ETH_MQ_RX_VMDQ_RSS or ETH_MQ_RX_RSS mode, and SRIOV mode > should be activated. > > It also needs config VF RSS information like hash function, RSS key, RS= S key > length. > > >=20 > Hi Changchun, >=20 > are there limitations to this support, as I understood that that RSS supp= ort for > VFs was not fully available in Niantic-based hardware? >=20 The limitation here is RETA table, RSS key, Hash function are shared by pf = and vf, This is not like FVL, in FVL each VF may has its own RETA. DPDK can setup 4 queues per vf while Linux ixgbe driver setup only 2 queues= per vf. This is a little advantage in DPDK over Linux driver . Thanks Changchun