From patchwork Tue Aug 13 10:40:51 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Xiao Zhang X-Patchwork-Id: 57634 X-Patchwork-Delegate: qi.z.zhang@intel.com Return-Path: X-Original-To: patchwork@dpdk.org Delivered-To: patchwork@dpdk.org Received: from [92.243.14.124] (localhost [127.0.0.1]) by dpdk.org (Postfix) with ESMTP id 36B2D1BDFD; Tue, 13 Aug 2019 03:46:42 +0200 (CEST) Received: from mga07.intel.com (mga07.intel.com [134.134.136.100]) by dpdk.org (Postfix) with ESMTP id 3673A1B952; Tue, 13 Aug 2019 03:46:40 +0200 (CEST) X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga004.fm.intel.com ([10.253.24.48]) by orsmga105.jf.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 12 Aug 2019 18:46:06 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.64,379,1559545200"; d="scan'208";a="200326987" Received: from npg-dpdk-zhangxiao.sh.intel.com ([10.67.110.190]) by fmsmga004.fm.intel.com with ESMTP; 12 Aug 2019 18:46:05 -0700 From: Xiao Zhang To: dev@dpdk.org Cc: beilei.xing@intel.com, Xiao Zhang , stable@dpdk.org Date: Tue, 13 Aug 2019 18:40:51 +0800 Message-Id: <1565692851-36962-1-git-send-email-xiao.zhang@intel.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1565631812-3136-1-git-send-email-xiao.zhang@intel.com> References: <1565631812-3136-1-git-send-email-xiao.zhang@intel.com> Subject: [dpdk-dev] [v5] net/i40e: fix vf runtime queues rss config 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" I40evf queue can not work properly with kernel pf driver. Eg. when configure 8 queues pair, only 4 queues can receive packets, and half packets will be lost if using 2 queues pair. This issue is caused by misconfiguration of look up table, use aq command to setup the lut to make it work properly. Fixes: cea7a51c1750 ("i40evf: support RSS") Cc: stable@dpdk.org Signed-off-by: Xiao Zhang Acked-by: Beilei Xing --- v5 fix compile issue v4 move local variable definition to the begin of the function v3 move LUT configuration in to i40evf_configure_rss v2 change for loop format to avoid build patch issue --- drivers/net/i40e/i40e_ethdev_vf.c | 32 ++++++++++++++++++++++++++------ 1 file changed, 26 insertions(+), 6 deletions(-) diff --git a/drivers/net/i40e/i40e_ethdev_vf.c b/drivers/net/i40e/i40e_ethdev_vf.c index 308fb98..c77b30c 100644 --- a/drivers/net/i40e/i40e_ethdev_vf.c +++ b/drivers/net/i40e/i40e_ethdev_vf.c @@ -2598,7 +2598,10 @@ i40evf_config_rss(struct i40e_vf *vf) struct i40e_hw *hw = I40E_VF_TO_HW(vf); struct rte_eth_rss_conf rss_conf; uint32_t i, j, lut = 0, nb_q = (I40E_VFQF_HLUT_MAX_INDEX + 1) * 4; + uint32_t rss_lut_size = (I40E_VFQF_HLUT1_MAX_INDEX + 1) * 4; uint16_t num; + uint8_t *lut_info; + int ret; if (vf->dev_data->dev_conf.rxmode.mq_mode != ETH_MQ_RX_RSS) { i40evf_disable_rss(vf); @@ -2608,12 +2611,29 @@ i40evf_config_rss(struct i40e_vf *vf) num = RTE_MIN(vf->dev_data->nb_rx_queues, I40E_MAX_QP_NUM_PER_VF); /* Fill out the look up table */ - for (i = 0, j = 0; i < nb_q; i++, j++) { - if (j >= num) - j = 0; - lut = (lut << 8) | j; - if ((i & 3) == 3) - I40E_WRITE_REG(hw, I40E_VFQF_HLUT(i >> 2), lut); + if (!(vf->flags & I40E_FLAG_RSS_AQ_CAPABLE)) { + for (i = 0, j = 0; i < nb_q; i++, j++) { + if (j >= num) + j = 0; + lut = (lut << 8) | j; + if ((i & 3) == 3) + I40E_WRITE_REG(hw, I40E_VFQF_HLUT(i >> 2), lut); + } + } else { + lut_info = rte_zmalloc("i40e_rss_lut", rss_lut_size, 0); + if (!lut_info) { + PMD_DRV_LOG(ERR, "No memory can be allocated"); + return -ENOMEM; + } + + for (i = 0; i < rss_lut_size; i++) + lut_info[i] = i % vf->num_queue_pairs; + + ret = i40evf_set_rss_lut(&vf->vsi, lut_info, + rss_lut_size); + rte_free(lut_info); + if (ret) + return ret; } rss_conf = vf->dev_data->dev_conf.rx_adv_conf.rss_conf;