From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mga17.intel.com (mga17.intel.com [192.55.52.151]) by dpdk.org (Postfix) with ESMTP id 575625B30 for ; Thu, 22 Nov 2018 09:45:37 +0100 (CET) X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga001.jf.intel.com ([10.7.209.18]) by fmsmga107.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 22 Nov 2018 00:45:36 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.56,264,1539673200"; d="scan'208";a="110385318" Received: from dpdk-server.sh.intel.com ([10.67.110.151]) by orsmga001.jf.intel.com with ESMTP; 22 Nov 2018 00:45:35 -0800 From: Zhirun Yan To: dev@dpdk.org Cc: qi.z.zhang@intel.com, haiyue.wang@intel.com, jingjing.wu@intel.com, Zhirun Yan Date: Thu, 22 Nov 2018 16:23:19 +0000 Message-Id: <20181122162319.87507-1-zhirun.yan@intel.com> X-Mailer: git-send-email 2.17.1 Subject: [dpdk-dev] [PATCH v1 3/4] net/i40e: support VF request more queues 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: , X-List-Received-Date: Thu, 22 Nov 2018 08:45:37 -0000 Before this patch, VF gets a default number of queues from the PF This patch enables VF requests a different number. When VF configures more queues, it will send VIRTCHNL_OP_REQUEST_QUEUES msg to PF to request more queues, if success, PF will reset the VF. User can run "port stop all", "port config port_id rxq/txq queue_num" and "port start all" to reconfigure queue number. Signed-off-by: Zhirun Yan --- drivers/net/i40e/i40e_ethdev_vf.c | 59 ++++++++++++++++++++++++++++--- 1 file changed, 55 insertions(+), 4 deletions(-) diff --git a/drivers/net/i40e/i40e_ethdev_vf.c b/drivers/net/i40e/i40e_ethdev_vf.c index cecedc91f..691ab99bb 100644 --- a/drivers/net/i40e/i40e_ethdev_vf.c +++ b/drivers/net/i40e/i40e_ethdev_vf.c @@ -343,6 +343,7 @@ i40evf_execute_vf_cmd(struct rte_eth_dev *dev, struct vf_cmd_info *args) err = 0; break; case VIRTCHNL_OP_VERSION: + case VIRTCHNL_OP_REQUEST_QUEUES: case VIRTCHNL_OP_GET_VF_RESOURCES: /* for init adminq commands, need to poll the response */ err = -1; @@ -350,8 +351,15 @@ i40evf_execute_vf_cmd(struct rte_eth_dev *dev, struct vf_cmd_info *args) ret = i40evf_read_pfmsg(dev, &info); vf->cmd_retval = info.result; if (ret == I40EVF_MSG_CMD) { - err = 0; + if (info.ops != VIRTCHNL_OP_REQUEST_QUEUES) + err = 0; break; + } else if (ret == I40EVF_MSG_SYS) { + if (args->ops == VIRTCHNL_OP_REQUEST_QUEUES && + vf->vf_reset) { + err = 0; + break; + } } else if (ret == I40EVF_MSG_ERR) break; rte_delay_ms(ASQ_DELAY_MS); @@ -1012,6 +1020,28 @@ i40evf_add_vlan(struct rte_eth_dev *dev, uint16_t vlanid) return err; } +static int +i40evf_request_queues(struct rte_eth_dev *dev, uint16_t num) +{ + struct i40e_vf *vf = I40EVF_DEV_PRIVATE_TO_VF(dev->data->dev_private); + struct virtchnl_vf_res_request vfres; + struct vf_cmd_info args; + int err; + + vfres.num_queue_pairs = num; + + args.ops = VIRTCHNL_OP_REQUEST_QUEUES; + args.in_args = (u8 *)&vfres; + args.in_args_size = sizeof(vfres); + args.out_buffer = vf->aq_resp; + args.out_size = I40E_AQ_BUF_SZ; + err = i40evf_execute_vf_cmd(dev, &args); + if (err) + PMD_DRV_LOG(ERR, "fail to execute command OP_REQUEST_QUEUES"); + + return err; +} + static int i40evf_del_vlan(struct rte_eth_dev *dev, uint16_t vlanid) { @@ -1515,8 +1545,12 @@ RTE_PMD_REGISTER_KMOD_DEP(net_i40e_vf, "* igb_uio | vfio-pci"); static int i40evf_dev_configure(struct rte_eth_dev *dev) { + struct i40e_vf *vf = I40EVF_DEV_PRIVATE_TO_VF(dev->data->dev_private); struct i40e_adapter *ad = I40E_DEV_PRIVATE_TO_ADAPTER(dev->data->dev_private); + uint16_t num_queue_pairs = RTE_MAX(dev->data->nb_rx_queues, + dev->data->nb_tx_queues); + int ret = 0; /* Initialize to TRUE. If any of Rx queues doesn't meet the bulk * allocation or vector Rx preconditions we will reset it. @@ -1526,7 +1560,24 @@ i40evf_dev_configure(struct rte_eth_dev *dev) ad->tx_simple_allowed = true; ad->tx_vec_allowed = true; - return i40evf_init_vlan(dev); + if (num_queue_pairs != vf->vsi_res->num_queue_pairs) { + PMD_DRV_LOG(INFO, "change queue pairs from %u to %u", + vf->vsi_res->num_queue_pairs, num_queue_pairs); + ret = i40evf_request_queues(dev, num_queue_pairs); + if (ret != 0) + return ret; + + ret = i40evf_dev_reset(dev); + vf->vf_reset = false; + vf->pend_msg &= ~PFMSG_RESET_IMPENDING; + + if (ret != 0) + return ret; + } + + i40evf_init_vlan(dev); + + return ret; } static int @@ -2137,8 +2188,8 @@ i40evf_dev_info_get(struct rte_eth_dev *dev, struct rte_eth_dev_info *dev_info) { struct i40e_vf *vf = I40EVF_DEV_PRIVATE_TO_VF(dev->data->dev_private); - dev_info->max_rx_queues = vf->vsi_res->num_queue_pairs; - dev_info->max_tx_queues = vf->vsi_res->num_queue_pairs; + dev_info->max_rx_queues = I40E_MAX_QP_NUM_PER_VF; + dev_info->max_tx_queues = I40E_MAX_QP_NUM_PER_VF; dev_info->min_rx_bufsize = I40E_BUF_SIZE_MIN; dev_info->max_rx_pktlen = I40E_FRAME_SIZE_MAX; dev_info->hash_key_size = (I40E_VFQF_HKEY_MAX_INDEX + 1) * sizeof(uint32_t); -- 2.17.1