From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from dpdk.org (dpdk.org [92.243.14.124]) by inbox.dpdk.org (Postfix) with ESMTP id 1286AA04B1; Thu, 27 Aug 2020 18:15:04 +0200 (CEST) Received: from [92.243.14.124] (localhost [127.0.0.1]) by dpdk.org (Postfix) with ESMTP id 2DE981C10C; Thu, 27 Aug 2020 18:13:51 +0200 (CEST) Received: from mga07.intel.com (mga07.intel.com [134.134.136.100]) by dpdk.org (Postfix) with ESMTP id A8BC51C08C for ; Thu, 27 Aug 2020 18:13:40 +0200 (CEST) IronPort-SDR: RpsqJqDOMISqR2vCh4w8QXCJ+eZsQqxMaIfRoC3J7tRzpIIIr+/DG+ktrDYjTovBlwuD9bSpuw Dacn74jx1i5g== X-IronPort-AV: E=McAfee;i="6000,8403,9726"; a="220767025" X-IronPort-AV: E=Sophos;i="5.76,360,1592895600"; d="scan'208";a="220767025" X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga007.fm.intel.com ([10.253.24.52]) by orsmga105.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 27 Aug 2020 09:13:28 -0700 IronPort-SDR: IZs+ucnv+imOBAdsBH7HIZH5FfZPLQvwiYGg+EjKssho2sT/0rjHArdcWCus9VZFf8ua2wuQOz H7Wpz9hNrUbA== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.76,360,1592895600"; d="scan'208";a="280681518" Received: from silpixa00399953.ir.intel.com (HELO silpixa00399953.ger.corp.intel.com) ([10.237.222.53]) by fmsmga007.fm.intel.com with ESMTP; 27 Aug 2020 09:13:27 -0700 From: Ciara Power To: dev@dpdk.org Cc: Ciara Power , Jingjing Wu , Beilei Xing Date: Thu, 27 Aug 2020 17:12:56 +0100 Message-Id: <20200827161304.32300-10-ciara.power@intel.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20200827161304.32300-1-ciara.power@intel.com> References: <20200807155859.63888-1-ciara.power@intel.com> <20200827161304.32300-1-ciara.power@intel.com> Subject: [dpdk-dev] [PATCH v2 09/17] net/iavf: add checks for max SIMD bitwidth X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org Sender: "dev" When choosing a vector path to take, an extra condition must be satisfied to ensure the max SIMD bitwidth allows for the CPU enabled path. Cc: Jingjing Wu Cc: Beilei Xing Signed-off-by: Ciara Power --- drivers/net/iavf/iavf_rxtx.c | 16 ++++++++++------ 1 file changed, 10 insertions(+), 6 deletions(-) diff --git a/drivers/net/iavf/iavf_rxtx.c b/drivers/net/iavf/iavf_rxtx.c index 05a7dd898a..b798d082a2 100644 --- a/drivers/net/iavf/iavf_rxtx.c +++ b/drivers/net/iavf/iavf_rxtx.c @@ -2105,14 +2105,16 @@ iavf_set_rx_function(struct rte_eth_dev *dev) int i; bool use_avx2 = false; - if (!iavf_rx_vec_dev_check(dev)) { + if (!iavf_rx_vec_dev_check(dev) && + rte_get_max_simd_bitwidth() >= RTE_MAX_128_SIMD) { for (i = 0; i < dev->data->nb_rx_queues; i++) { rxq = dev->data->rx_queues[i]; (void)iavf_rxq_vec_setup(rxq); } - if (rte_cpu_get_flag_enabled(RTE_CPUFLAG_AVX2) == 1 || - rte_cpu_get_flag_enabled(RTE_CPUFLAG_AVX512F) == 1) + if ((rte_cpu_get_flag_enabled(RTE_CPUFLAG_AVX2) == 1 || + rte_cpu_get_flag_enabled(RTE_CPUFLAG_AVX512F) == 1) && + rte_get_max_simd_bitwidth() >= RTE_MAX_256_SIMD) use_avx2 = true; if (dev->data->scattered_rx) { @@ -2178,7 +2180,8 @@ iavf_set_tx_function(struct rte_eth_dev *dev) int i; bool use_avx2 = false; - if (!iavf_tx_vec_dev_check(dev)) { + if (!iavf_tx_vec_dev_check(dev) && + rte_get_max_simd_bitwidth() >= RTE_MAX_128_SIMD) { for (i = 0; i < dev->data->nb_tx_queues; i++) { txq = dev->data->tx_queues[i]; if (!txq) @@ -2186,8 +2189,9 @@ iavf_set_tx_function(struct rte_eth_dev *dev) iavf_txq_vec_setup(txq); } - if (rte_cpu_get_flag_enabled(RTE_CPUFLAG_AVX2) == 1 || - rte_cpu_get_flag_enabled(RTE_CPUFLAG_AVX512F) == 1) + if ((rte_cpu_get_flag_enabled(RTE_CPUFLAG_AVX2) == 1 || + rte_cpu_get_flag_enabled(RTE_CPUFLAG_AVX512F) == 1) && + rte_get_max_simd_bitwidth() >= RTE_MAX_256_SIMD) use_avx2 = true; PMD_DRV_LOG(DEBUG, "Using %sVector Tx (port %d).", -- 2.17.1