From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-wi0-f172.google.com (mail-wi0-f172.google.com [209.85.212.172]) by dpdk.org (Postfix) with ESMTP id 52A2A5A6B for ; Mon, 2 Mar 2015 13:56:24 +0100 (CET) Received: by wivr20 with SMTP id r20so14566759wiv.2 for ; Mon, 02 Mar 2015 04:56:24 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:date:from:to:cc:subject:message-id:references :mime-version:content-type:content-disposition:in-reply-to; bh=m9UkgMjiKDY93zDGWvq1QnWp02fbYYqif7d7yLpqU/g=; b=DgJiaU52Y6jt+jSgovdmeZhZ2QV0MVFa/7wsxdyGXWQjJeIBSWd+NavY/qb1O8LIpP rUzzgOAqqcMIBb2xbDeYsQw7I770HiYJZva6E5Ik/rt3bBYhHVJIH9zGS5v5+pO5xbG1 cYEvKLsysAcJKPGP+zL4SR7xqldsvNZfJoPFLLqrR+DTvkguGLxN/mn1af2x9AAcW7L6 yOInLKNFZe/prcPLy6AwGc8eEJN0knjWLlhENEB0YHss4FtxnxL3pfC/7k1c0m2E8fbn Fc7MMZohEnsDxbadZR0apisnd65qi2xEcwj9SMUWsR/ib2fjFH6cd994ScI4lGS9ls2V 0rcw== X-Gm-Message-State: ALoCoQnHsrvcxezIoozIjUBVuKtnltrw2W/n8rO5T1Zm9RpPUBrG5GCLBWtb/VpPfl8lF6RMEKzV X-Received: by 10.180.39.33 with SMTP id m1mr35744557wik.26.1425300984124; Mon, 02 Mar 2015 04:56:24 -0800 (PST) Received: from trex.cloudius-systems.com ([212.143.139.214]) by mx.google.com with ESMTPSA id j7sm15983087wix.4.2015.03.02.04.56.22 (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Mon, 02 Mar 2015 04:56:22 -0800 (PST) Received: by trex.cloudius-systems.com (Postfix, from userid 1042) id CDF6083EC1; Mon, 2 Mar 2015 14:56:19 +0200 (IST) Date: Mon, 2 Mar 2015 14:56:19 +0200 From: Gleb Natapov To: dev@dpdk.org Message-ID: <20150302125619.GE3806@cloudius-systems.com> References: <20150216133654.GQ24740@cloudius-systems.com> <20150219145010.GB29513@cloudius-systems.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20150219145010.GB29513@cloudius-systems.com> Subject: Re: [dpdk-dev] i40e and RSS woes 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: Mon, 02 Mar 2015 12:56:24 -0000 Ping. On Thu, Feb 19, 2015 at 04:50:10PM +0200, Gleb Natapov wrote: > CCing i40e driver author in a hope to get an answer. > > On Mon, Feb 16, 2015 at 03:36:54PM +0200, Gleb Natapov wrote: > > I have an application that works reasonably well with ixgbe driver, but > > when I try to use it with i40e I encounter various RSS related issues. > > > > First one is that for some reason i40e, when it builds default reta > > table, round down number of queues to power of two. Why is this? If I > > configure reta by my own using all of the queues everything seams to be > > working. To add insult to injury I do not get any errors during > > configuration some queues just do not receive any traffic. > > > > The second problem is that for some reason i40e does not use 40 byte > > toeplitz hash key like any other driver, but it expects the key to be 52 > > bytes. And it would have being fine (if we ignore the fact that it > > contradicts MS spec), but how my high level code suppose to know that? > > And again, device configuration does not fail when wrong key length is > > provided, it just uses some other key. Guys this kind of error handling > > is completely unacceptable. > > > > The last one is more of a question. Why interface to change RSS hash > > function (XOR or toeplitz) is part of a filter configuration and not rss > > config? > > > > -- > > Gleb. > > -- > Gleb. -- Gleb.