From patchwork Fri Jan 15 02:40:32 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Zhang, Helin" X-Patchwork-Id: 9876 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 1560691AD; Fri, 15 Jan 2016 03:41:22 +0100 (CET) Received: from mga01.intel.com (mga01.intel.com [192.55.52.88]) by dpdk.org (Postfix) with ESMTP id 287688E99 for ; Fri, 15 Jan 2016 03:41:20 +0100 (CET) Received: from orsmga003.jf.intel.com ([10.7.209.27]) by fmsmga101.fm.intel.com with ESMTP; 14 Jan 2016 18:41:19 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.22,297,1449561600"; d="scan'208";a="727383385" Received: from shvmail01.sh.intel.com ([10.239.29.42]) by orsmga003.jf.intel.com with ESMTP; 14 Jan 2016 18:41:18 -0800 Received: from shecgisg004.sh.intel.com (shecgisg004.sh.intel.com [10.239.29.89]) by shvmail01.sh.intel.com with ESMTP id u0F2fFqV002424; Fri, 15 Jan 2016 10:41:15 +0800 Received: from shecgisg004.sh.intel.com (localhost [127.0.0.1]) by shecgisg004.sh.intel.com (8.13.6/8.13.6/SuSE Linux 0.8) with ESMTP id u0F2fCmW000715; Fri, 15 Jan 2016 10:41:14 +0800 Received: (from hzhan75@localhost) by shecgisg004.sh.intel.com (8.13.6/8.13.6/Submit) id u0F2fCom000711; Fri, 15 Jan 2016 10:41:12 +0800 From: Helin Zhang To: dev@dpdk.org Date: Fri, 15 Jan 2016 10:40:32 +0800 Message-Id: <1452825653-623-9-git-send-email-helin.zhang@intel.com> X-Mailer: git-send-email 1.7.4.1 In-Reply-To: <1452825653-623-1-git-send-email-helin.zhang@intel.com> References: <1452825653-623-1-git-send-email-helin.zhang@intel.com> Subject: [dpdk-dev] [PATCH 08/29] i40e/base: clean event descriptor before use 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" In one obscure corner case, it was possible to clear the NVM update wait flag when no update_done message was actually received. This patch cleans the event descriptor before use, and moves the opcode check to where it won't get done if there was no event to clean. Signed-off-by: Helin Zhang --- drivers/net/i40e/base/i40e_adminq.c | 17 ++++++++++------- 1 file changed, 10 insertions(+), 7 deletions(-) diff --git a/drivers/net/i40e/base/i40e_adminq.c b/drivers/net/i40e/base/i40e_adminq.c index ee563e4..222add4 100644 --- a/drivers/net/i40e/base/i40e_adminq.c +++ b/drivers/net/i40e/base/i40e_adminq.c @@ -1032,6 +1032,9 @@ enum i40e_status_code i40e_clean_arq_element(struct i40e_hw *hw, u16 flags; u16 ntu; + /* pre-clean the event info */ + i40e_memset(&e->desc, 0, sizeof(e->desc), I40E_NONDMA_MEM); + /* take the lock before we start messing with the ring */ i40e_acquire_spinlock(&hw->aq.arq_spinlock); @@ -1116,13 +1119,6 @@ enum i40e_status_code i40e_clean_arq_element(struct i40e_hw *hw, hw->aq.arq.next_to_clean = ntc; hw->aq.arq.next_to_use = ntu; -clean_arq_element_out: - /* Set pending if needed, unlock and return */ - if (pending != NULL) - *pending = (ntc > ntu ? hw->aq.arq.count : 0) + (ntu - ntc); -clean_arq_element_err: - i40e_release_spinlock(&hw->aq.arq_spinlock); - #ifdef PF_DRIVER if (i40e_is_nvm_update_op(&e->desc)) { if (hw->aq.nvm_release_on_done) { @@ -1145,6 +1141,13 @@ clean_arq_element_err: } #endif +clean_arq_element_out: + /* Set pending if needed, unlock and return */ + if (pending != NULL) + *pending = (ntc > ntu ? hw->aq.arq.count : 0) + (ntu - ntc); +clean_arq_element_err: + i40e_release_spinlock(&hw->aq.arq_spinlock); + return ret_code; }