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 07D31A04B5; Wed, 30 Sep 2020 15:10:54 +0200 (CEST) Received: from [92.243.14.124] (localhost [127.0.0.1]) by dpdk.org (Postfix) with ESMTP id 492CC1DB54; Wed, 30 Sep 2020 15:08:28 +0200 (CEST) Received: from mga18.intel.com (mga18.intel.com [134.134.136.126]) by dpdk.org (Postfix) with ESMTP id 63EEE1DAF8 for ; Wed, 30 Sep 2020 15:08:17 +0200 (CEST) IronPort-SDR: ABT3E2Ny6ruD+Twg0BAr3SVvslq6xqnhS+nBK+oATyIQa/fTcvE5m0p3oKLBXxXTH3/qfNEsHq u3gSk95PUjFg== X-IronPort-AV: E=McAfee;i="6000,8403,9759"; a="150223477" X-IronPort-AV: E=Sophos;i="5.77,322,1596524400"; d="scan'208";a="150223477" X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga008.fm.intel.com ([10.253.24.58]) by orsmga106.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 30 Sep 2020 06:08:17 -0700 IronPort-SDR: my4Fdnqv1TvcgTu3ig48ABfBBhTY/ub9Xa9QX3UY/zvCLcg05S3UuhrE9Lz5byvzt2LlI8mh+t S1cM46l2ObTQ== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.77,322,1596524400"; d="scan'208";a="294603224" Received: from silpixa00399953.ir.intel.com (HELO silpixa00399953.ger.corp.intel.com) ([10.237.222.53]) by fmsmga008.fm.intel.com with ESMTP; 30 Sep 2020 06:08:15 -0700 From: Ciara Power To: dev@dpdk.org Cc: Ciara Power , Jingjing Wu , Beilei Xing Date: Wed, 30 Sep 2020 14:04:05 +0100 Message-Id: <20200930130415.11211-10-ciara.power@intel.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20200930130415.11211-1-ciara.power@intel.com> References: <20200807155859.63888-1-ciara.power@intel.com> <20200930130415.11211-1-ciara.power@intel.com> Subject: [dpdk-dev] [PATCH v3 09/18] 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" Archived-At: List-Archive: 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