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 9C503A04B1; Thu, 27 Aug 2020 18:14:05 +0200 (CEST) Received: from [92.243.14.124] (localhost [127.0.0.1]) by dpdk.org (Postfix) with ESMTP id 0E4981C0B7; Thu, 27 Aug 2020 18:13:45 +0200 (CEST) Received: from mga07.intel.com (mga07.intel.com [134.134.136.100]) by dpdk.org (Postfix) with ESMTP id 45DFA1C065 for ; Thu, 27 Aug 2020 18:13:39 +0200 (CEST) IronPort-SDR: 4wq64OiMpfsFCfYW2WyLKEQKdZ52ysWlCKYSwzwgOszrID04OLtCY7V1nHbBVe25+hSP1JMrV2 Z2aY6D2IfbKw== X-IronPort-AV: E=McAfee;i="6000,8403,9726"; a="220767001" X-IronPort-AV: E=Sophos;i="5.76,360,1592895600"; d="scan'208";a="220767001" 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 09:13:22 -0700 IronPort-SDR: t90duYw3tDTXzCsf3WZXl93GAEOIkJ86itjlAEQEDdHj0s18HmKrFRbsrav+oOmiAoLZ7Oc3aO /Ico3rLhkC+w== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.76,360,1592895600"; d="scan'208";a="280681467" 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 09:13:20 -0700 From: Ciara Power To: dev@dpdk.org Cc: Ciara Power , Beilei Xing , Jeff Guo Date: Thu, 27 Aug 2020 17:12:51 +0100 Message-Id: <20200827161304.32300-5-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 04/17] net/i40e: 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: Beilei Xing Cc: Jeff Guo Signed-off-by: Ciara Power --- drivers/net/i40e/i40e_rxtx.c | 19 +++++++++++++------ 1 file changed, 13 insertions(+), 6 deletions(-) diff --git a/drivers/net/i40e/i40e_rxtx.c b/drivers/net/i40e/i40e_rxtx.c index fe7f9200c1..90f4e26fb8 100644 --- a/drivers/net/i40e/i40e_rxtx.c +++ b/drivers/net/i40e/i40e_rxtx.c @@ -3098,7 +3098,8 @@ static eth_rx_burst_t i40e_get_latest_rx_vec(bool scatter) { #if defined(RTE_ARCH_X86) && defined(CC_AVX2_SUPPORT) - if (rte_cpu_get_flag_enabled(RTE_CPUFLAG_AVX2)) + if (rte_cpu_get_flag_enabled(RTE_CPUFLAG_AVX2) && + rte_get_max_simd_bitwidth() >= RTE_MAX_256_SIMD) return scatter ? i40e_recv_scattered_pkts_vec_avx2 : i40e_recv_pkts_vec_avx2; #endif @@ -3115,7 +3116,8 @@ i40e_get_recommend_rx_vec(bool scatter) * use of AVX2 version to later plaforms, not all those that could * theoretically run it. */ - if (rte_cpu_get_flag_enabled(RTE_CPUFLAG_AVX512F)) + if (rte_cpu_get_flag_enabled(RTE_CPUFLAG_AVX512F) && + rte_get_max_simd_bitwidth() >= RTE_MAX_256_SIMD) return scatter ? i40e_recv_scattered_pkts_vec_avx2 : i40e_recv_pkts_vec_avx2; #endif @@ -3154,7 +3156,8 @@ i40e_set_rx_function(struct rte_eth_dev *dev) } } - if (ad->rx_vec_allowed) { + if (ad->rx_vec_allowed && rte_get_max_simd_bitwidth() + >= RTE_MAX_128_SIMD) { /* Vec Rx path */ PMD_INIT_LOG(DEBUG, "Vector Rx path will be used on port=%d.", dev->data->port_id); @@ -3268,7 +3271,8 @@ static eth_tx_burst_t i40e_get_latest_tx_vec(void) { #if defined(RTE_ARCH_X86) && defined(CC_AVX2_SUPPORT) - if (rte_cpu_get_flag_enabled(RTE_CPUFLAG_AVX2)) + if (rte_cpu_get_flag_enabled(RTE_CPUFLAG_AVX2) && + rte_get_max_simd_bitwidth() >= RTE_MAX_256_SIMD) return i40e_xmit_pkts_vec_avx2; #endif return i40e_xmit_pkts_vec; @@ -3283,7 +3287,8 @@ i40e_get_recommend_tx_vec(void) * use of AVX2 version to later plaforms, not all those that could * theoretically run it. */ - if (rte_cpu_get_flag_enabled(RTE_CPUFLAG_AVX512F)) + if (rte_cpu_get_flag_enabled(RTE_CPUFLAG_AVX512F) && + rte_get_max_simd_bitwidth() >= RTE_MAX_256_SIMD) return i40e_xmit_pkts_vec_avx2; #endif return i40e_xmit_pkts_vec; @@ -3311,7 +3316,9 @@ i40e_set_tx_function(struct rte_eth_dev *dev) } if (ad->tx_simple_allowed) { - if (ad->tx_vec_allowed) { + if (ad->tx_vec_allowed && + rte_get_max_simd_bitwidth() + >= RTE_MAX_128_SIMD) { PMD_INIT_LOG(DEBUG, "Vector tx finally be used."); if (ad->use_latest_vec) dev->tx_pkt_burst = -- 2.17.1