From patchwork Thu Nov 10 16:46:50 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Fiona Trahe X-Patchwork-Id: 16996 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 1391BD4D6; Thu, 10 Nov 2016 17:48:28 +0100 (CET) Received: from mga01.intel.com (mga01.intel.com [192.55.52.88]) by dpdk.org (Postfix) with ESMTP id 1C1425599 for ; Thu, 10 Nov 2016 17:48:26 +0100 (CET) Received: from fmsmga006.fm.intel.com ([10.253.24.20]) by fmsmga101.fm.intel.com with ESMTP; 10 Nov 2016 08:46:55 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.31,619,1473145200"; d="scan'208";a="29766745" Received: from sivswdev01.ir.intel.com (HELO localhost.localdomain) ([10.237.217.45]) by fmsmga006.fm.intel.com with ESMTP; 10 Nov 2016 08:46:54 -0800 From: Fiona Trahe To: dev@dpdk.org Cc: pablo.de.lara.guarch@intel.com, fiona.trahe@intel.com, john.griffin@intel.com Date: Thu, 10 Nov 2016 16:46:50 +0000 Message-Id: <1478796410-15004-1-git-send-email-fiona.trahe@intel.com> X-Mailer: git-send-email 1.7.0.7 Subject: [dpdk-dev] [PATCH] doc: add known issue on QAT PMD into release notes 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" Issue is with the digest appended feature on QAT PMD. A workaround is also documented. Signed-off-by: Fiona Trahe Acked-by: John McNamara --- doc/guides/rel_notes/release_16_11.rst | 13 ++++++++++++- 1 file changed, 12 insertions(+), 1 deletion(-) diff --git a/doc/guides/rel_notes/release_16_11.rst b/doc/guides/rel_notes/release_16_11.rst index 365b5a3..5f925b5 100644 --- a/doc/guides/rel_notes/release_16_11.rst +++ b/doc/guides/rel_notes/release_16_11.rst @@ -213,7 +213,18 @@ Known Issues Therefore, in order to use L3fwd-power, vector mode should be disabled from the config file. - +* **Digest address must be supplied for crypto auth operation on QAT PMD.** + + The cryptodev API specifies that if the rte_crypto_sym_op.digest.data field, + and by inference the digest.phys_addr field which points to the same location, + is not set for an auth operation the driver is to understand that the digest + result is located immediately following the region over which the digest is + computed. The QAT PMD doesn't correctly handle this case and reads and writes + to an incorrect location. + + Callers can workaround this by always supplying the digest virtual and + physical address fields in the rte_crypto_sym_op for an auth operation. + API Changes -----------