From patchwork Fri Nov 4 12:48:17 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "De Lara Guarch, Pablo" X-Patchwork-Id: 16937 Return-Path: X-Original-To: patchwork@dpdk.org Delivered-To: patchwork@dpdk.org Received: from [92.243.14.124] (localhost [IPv6:::1]) by dpdk.org (Postfix) with ESMTP id 675BB3978; Fri, 4 Nov 2016 13:46:51 +0100 (CET) Received: from mga06.intel.com (mga06.intel.com [134.134.136.31]) by dpdk.org (Postfix) with ESMTP id 78AB63277 for ; Fri, 4 Nov 2016 13:46:48 +0100 (CET) Received: from orsmga005.jf.intel.com ([10.7.209.41]) by orsmga104.jf.intel.com with ESMTP; 04 Nov 2016 05:46:47 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.31,443,1473145200"; d="scan'208";a="27524093" Received: from sie-lab-214-036.ir.intel.com (HELO silpixa00394365.ir.intel.com) ([10.237.214.36]) by orsmga005.jf.intel.com with ESMTP; 04 Nov 2016 05:46:46 -0700 From: Pablo de Lara To: dev@dpdk.org Cc: Pablo de Lara Date: Fri, 4 Nov 2016 12:48:17 +0000 Message-Id: <1478263697-57575-1-git-send-email-pablo.de.lara.guarch@intel.com> X-Mailer: git-send-email 2.7.4 Subject: [dpdk-dev] [PATCH] doc: add limitation for L3fwd-power app 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: , Errors-To: dev-bounces@dpdk.org Sender: "dev" L3fwd-power app needs vector mode to be disabled in order to work properly. The app used to work previously, because it was using Rx scalar function, but now it uses vector function. Vector mode needs to be disabled to make the app works, which has been documented in release notes. Signed-off-by: Pablo de Lara Acked-by: John McNamara --- doc/guides/rel_notes/release_16_11.rst | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/doc/guides/rel_notes/release_16_11.rst b/doc/guides/rel_notes/release_16_11.rst index aa0c09a..cb4ec97 100644 --- a/doc/guides/rel_notes/release_16_11.rst +++ b/doc/guides/rel_notes/release_16_11.rst @@ -178,6 +178,17 @@ Known Issues This section is a comment. Make sure to start the actual text at the margin. +* **L3fwd-power app does not work properly when Rx vector is enabled.** + + Using some drivers with vector enabled, makes L3fwd-power app not work + properly, since the queue monitoring works differently when using + scalar compared to vector, making the frequency scaling not to work correctly. + In addition, L3fwd-power requires the mbuf to have correct packet type, + but in some drivers, the vector mode must be disabled for this. + + Therefore, in order to use L3fwd-power, vector mode should be disabled + from the config file. + API Changes -----------