From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from minas.ics.muni.cz (minas.ics.muni.cz [147.251.4.46]) by dpdk.org (Postfix) with ESMTP id CF0DF58D8 for ; Tue, 1 Sep 2015 16:37:26 +0200 (CEST) Received: from [147.251.17.13] (dhcp17-13.ics.muni.cz [147.251.17.13]) (authenticated user=98998@is.muni.cz bits=0) by minas.ics.muni.cz (8.14.4/8.14.4/Debian-4) with ESMTP id t81EbP3f015157 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NOT) for ; Tue, 1 Sep 2015 16:37:26 +0200 To: dev@dpdk.org References: <55E44563.5050208@ics.muni.cz> From: =?UTF-8?Q?Martin_Dra=c5=a1ar?= X-Enigmail-Draft-Status: N1110 Message-ID: <55E5B81E.8010601@ics.muni.cz> Date: Tue, 1 Sep 2015 16:37:18 +0200 User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:38.0) Gecko/20100101 Thunderbird/38.2.0 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=iso-8859-2 Content-Transfer-Encoding: 8bit X-Muni-Envelope-From: drasar@ics.muni.cz X-Muni-Spam-TestIP: 147.251.17.13 X-Muni-Local-IP: yes X-Muni-Local-Auth: yes X-Greylist: Sender succeeded SMTP AUTH, not delayed by milter-greylist-4.3.9 (minas.ics.muni.cz [147.251.4.35]); Tue, 01 Sep 2015 16:37:26 +0200 (CEST) X-Virus-Scanned: clamav-milter 0.98.7 at minas X-Virus-Status: Clean Subject: Re: [dpdk-dev] Broken RSS hash computation on Intel 82574L 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, 01 Sep 2015 14:37:27 -0000 Dne 1.9.2015 v 15:45 De Lara Guarch, Pablo napsal(a): > 82574L NIC uses em PMD, which does not support more than 1 queue. > Therefore RSS is disabled in the NIC and then you cannot have RSS hashes. > > Thanks, > Pablo Hi Pablo, that is an interesting information. I read the rationale in em_ethdev.c and I was wondering, what would have to be done to enable RSS hash computation on that card. I can live with just one RX queue, but hashes would help me a lot. The computer which is using those NICs is not that powerful and every bit of offloaded computation counts... Thanks, Martin