From patchwork Fri Aug 5 09:06:23 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jianbo Liu X-Patchwork-Id: 15131 X-Patchwork-Delegate: bruce.richardson@intel.com 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 5D9312B9A; Fri, 5 Aug 2016 11:06:44 +0200 (CEST) Received: from foss.arm.com (foss.arm.com [217.140.101.70]) by dpdk.org (Postfix) with ESMTP id 3DE192B98 for ; Fri, 5 Aug 2016 11:06:43 +0200 (CEST) Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.72.51.249]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 6C24B28; Fri, 5 Aug 2016 02:08:05 -0700 (PDT) Received: from Overdrive.amd.com.com (usa-sjc-imap-foss1.foss.arm.com [10.72.51.249]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPA id 3021C3F387; Fri, 5 Aug 2016 02:06:41 -0700 (PDT) From: Jianbo Liu To: dev@dpdk.org, helin.zhang@intel.com, jingjing.wu@intel.com Cc: Jianbo Liu Date: Fri, 5 Aug 2016 14:36:23 +0530 Message-Id: <1470387983-12713-1-git-send-email-jianbo.liu@linaro.org> X-Mailer: git-send-email 2.4.11 In-Reply-To: <1470121107-7622-1-git-send-email-jianbo.liu@linaro.org> References: <1470121107-7622-1-git-send-email-jianbo.liu@linaro.org> Subject: [dpdk-dev] [PATCH v3] i40e: enable i40e pmd on ARM platform 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" And add read memory barrier to avoid status inconsistency between two RX descriptors readings. Signed-off-by: Jianbo Liu --- config/defconfig_arm64-armv8a-linuxapp-gcc | 2 +- doc/guides/nics/features/i40e.ini | 1 + drivers/net/i40e/i40e_rxtx.c | 2 ++ 3 files changed, 4 insertions(+), 1 deletion(-) diff --git a/config/defconfig_arm64-armv8a-linuxapp-gcc b/config/defconfig_arm64-armv8a-linuxapp-gcc index 1a17126..08f282b 100644 --- a/config/defconfig_arm64-armv8a-linuxapp-gcc +++ b/config/defconfig_arm64-armv8a-linuxapp-gcc @@ -46,6 +46,6 @@ CONFIG_RTE_EAL_IGB_UIO=n CONFIG_RTE_LIBRTE_IVSHMEM=n CONFIG_RTE_LIBRTE_FM10K_PMD=n -CONFIG_RTE_LIBRTE_I40E_PMD=n +CONFIG_RTE_LIBRTE_I40E_INC_VECTOR=n CONFIG_RTE_SCHED_VECTOR=n diff --git a/doc/guides/nics/features/i40e.ini b/doc/guides/nics/features/i40e.ini index fb3fb60..0d143bc 100644 --- a/doc/guides/nics/features/i40e.ini +++ b/doc/guides/nics/features/i40e.ini @@ -45,3 +45,4 @@ Linux UIO = Y Linux VFIO = Y x86-32 = Y x86-64 = Y +ARMv8 = Y diff --git a/drivers/net/i40e/i40e_rxtx.c b/drivers/net/i40e/i40e_rxtx.c index 554d167..57825fb 100644 --- a/drivers/net/i40e/i40e_rxtx.c +++ b/drivers/net/i40e/i40e_rxtx.c @@ -994,6 +994,8 @@ i40e_rx_scan_hw_ring(struct i40e_rx_queue *rxq) I40E_RXD_QW1_STATUS_SHIFT; } + rte_smp_rmb(); + /* Compute how many status bits were set */ for (j = 0, nb_dd = 0; j < I40E_LOOK_AHEAD; j++) nb_dd += s[j] & (1 << I40E_RX_DESC_STATUS_DD_SHIFT);