From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mga14.intel.com (mga14.intel.com [192.55.52.115]) by dpdk.org (Postfix) with ESMTP id 26456234 for ; Fri, 27 Mar 2015 06:30:45 +0100 (CET) Received: from fmsmga003.fm.intel.com ([10.253.24.29]) by fmsmga103.fm.intel.com with ESMTP; 26 Mar 2015 22:30:46 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.11,477,1422950400"; d="scan'208";a="473381520" Received: from pgsmsx103.gar.corp.intel.com ([10.221.44.82]) by FMSMGA003.fm.intel.com with ESMTP; 26 Mar 2015 22:30:44 -0700 Received: from shsmsx102.ccr.corp.intel.com (10.239.4.154) by PGSMSX103.gar.corp.intel.com (10.221.44.82) with Microsoft SMTP Server (TLS) id 14.3.224.2; Fri, 27 Mar 2015 13:30:27 +0800 Received: from shsmsx104.ccr.corp.intel.com ([169.254.5.149]) by shsmsx102.ccr.corp.intel.com ([169.254.2.198]) with mapi id 14.03.0224.002; Fri, 27 Mar 2015 13:30:26 +0800 From: "Zhang, Helin" To: Matthew Hall , Thomas Monjalon Thread-Topic: [dpdk-dev] Symmetric RSS Hashing, Part 2 Thread-Index: AQHQZXronBqgSfiC1UmxTnBJwAweq50pqL2AgABmeYCABcN4EA== Date: Fri, 27 Mar 2015 05:30:25 +0000 Message-ID: References: <4212375A-A998-48A6-A41E-599E9A35410B@mhcomputing.net> <4378294.bYFEcjd8Sh@xps13> <20150323212719.GB5502@mhcomputing.net> In-Reply-To: <20150323212719.GB5502@mhcomputing.net> Accept-Language: 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] Symmetric RSS Hashing, Part 2 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, 27 Mar 2015 05:30:46 -0000 Hi guys Did you guys talk about symmetric hash in software or in hardware? If about hardware, I have one comment. I40e supports symmetric hash by hardware, which was enabled in i40e PMD rec= ently. You can have a try. Regards, Helin > -----Original Message----- > From: dev [mailto:dev-bounces@dpdk.org] On Behalf Of Matthew Hall > Sent: Tuesday, March 24, 2015 5:27 AM > To: Thomas Monjalon > Cc: dev@dpdk.org > Subject: Re: [dpdk-dev] Symmetric RSS Hashing, Part 2 >=20 > On Mon, Mar 23, 2015 at 04:20:33PM +0100, Thomas Monjalon wrote: > > 2015-03-23 10:05, Matt Laswell: > > > Hey Folks, > > > > > > I have essentially the same question as Matthew. Has there been > > > progress in this area? > > > > No, AFAIK. > > Submitting a patch would be a good start I think. >=20 > Hi Thomas, >=20 > We did have somebody in the past thread who tried the key recommended in = a > scientific paper to get a symmetric hash, 0x6d5a I believe. However it di= dn't > seem to get the expected results when tested in real life. >=20 > We're happy to make patches but we're not sure of the content to put in t= here > if the only such RSS key we heard about didn't work when it was tested. I= s there > a subject matter expert in RSS who would be able to assist in more detail= to > figure out what went wrong? >=20 > Matthew.