From patchwork Fri Dec 8 01:53:46 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Wei Dai X-Patchwork-Id: 31996 X-Patchwork-Delegate: helin.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 E8B407CE7; Fri, 8 Dec 2017 03:08:59 +0100 (CET) Received: from mga12.intel.com (mga12.intel.com [192.55.52.136]) by dpdk.org (Postfix) with ESMTP id 8FADF2B89 for ; Fri, 8 Dec 2017 03:08:58 +0100 (CET) Received: from orsmga003.jf.intel.com ([10.7.209.27]) by fmsmga106.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 07 Dec 2017 18:08:57 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.45,375,1508828400"; d="scan'208";a="10533029" Received: from dpdk6.bj.intel.com ([172.16.182.87]) by orsmga003.jf.intel.com with ESMTP; 07 Dec 2017 18:08:55 -0800 From: Wei Dai To: konstantin.ananyev@intel.com, jingjing.wu@intel.com, beilei.xing@intel.com, yuan.peng@intel.com Cc: dev@dpdk.org, Wei Dai Date: Fri, 8 Dec 2017 09:53:46 +0800 Message-Id: <1512698026-52834-1-git-send-email-wei.dai@intel.com> X-Mailer: git-send-email 2.7.5 In-Reply-To: <1511770139-48286-1-git-send-email-wei.dai@intel.com> References: <1511770139-48286-1-git-send-email-wei.dai@intel.com> Subject: [dpdk-dev] [PATCH v7] net/i40e: determine number of queues per VF during run time 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" Without this patch, the number of queues per i40e VF is defined as 4 by CONFIG_RTE_LIBRTE_I40E_QUEUE_NUM_PER_VF=4 in config/common_base. It is fixed value determined in building time and can't be changed during run time. With this patch, the number of queues per i40e VF can be determinated during run time. For example, if the PCI address of an i40e PF is aaaa:bb.cc, with the EAL parameter -w aaaa:bb.cc,queue-num-per-vf=8 , the number of queues per VF created from this PF is 8. If there is no "queue-num-per-vf" setting in EAL parameters, it is 4 by default as before. And if the value after the "queue-num-per-vf" is invalid, it is set as 4 forcibly. The valid values include 1, 2, 4, 8, 16 . Signed-off-by: Wei Dai Acked-by: Konstantin Ananyev --- v7: use the macro instead of natural number correct git log message as the EAL parameter is only valid for PF v6: fix a small bug when detecting end character of strtoul v5: fix git log message and WARNING of coding stype v4: use rte_kvargs instead of pervious parsing function; use malloc/free instead of rte_zmalloc/rte_free. v3: fix WARNING of coding style issues from checkpatch@dpdk.org v2: fix WARNING of coding style issues from checkpatch@dpdk.org --- config/common_base | 1 - drivers/net/i40e/i40e_ethdev.c | 67 ++++++++++++++++++++++++++++++++++++++++-- 2 files changed, 65 insertions(+), 3 deletions(-) diff --git a/config/common_base b/config/common_base index e74febe..4e20389 100644 --- a/config/common_base +++ b/config/common_base @@ -208,7 +208,6 @@ CONFIG_RTE_LIBRTE_I40E_RX_ALLOW_BULK_ALLOC=y CONFIG_RTE_LIBRTE_I40E_INC_VECTOR=y CONFIG_RTE_LIBRTE_I40E_16BYTE_RX_DESC=n CONFIG_RTE_LIBRTE_I40E_QUEUE_NUM_PER_PF=64 -CONFIG_RTE_LIBRTE_I40E_QUEUE_NUM_PER_VF=4 CONFIG_RTE_LIBRTE_I40E_QUEUE_NUM_PER_VM=4 # interval up to 8160 us, aligned to 2 (or default value) CONFIG_RTE_LIBRTE_I40E_ITR_INTERVAL=-1 diff --git a/drivers/net/i40e/i40e_ethdev.c b/drivers/net/i40e/i40e_ethdev.c index 811cc9f..9295e1b 100644 --- a/drivers/net/i40e/i40e_ethdev.c +++ b/drivers/net/i40e/i40e_ethdev.c @@ -3971,6 +3971,67 @@ i40e_get_cap(struct i40e_hw *hw) return ret; } +#define RTE_LIBRTE_I40E_QUEUE_NUM_PER_VF 4 +#define QUEUE_NUM_PER_VF_ARG "queue-num-per-vf" +static int i40e_pf_parse_vf_queue_number_handler(const char *key, + const char *value, + void *opaque) +{ + struct i40e_pf *pf; + unsigned long num; + char *end; + + pf = (struct i40e_pf *)opaque; + RTE_SET_USED(key); + + errno = 0; + num = strtoul(value, &end, 0); + if (errno != 0 || end == value || *end != 0) { + PMD_DRV_LOG(WARNING, "Wrong VF queue number = %s, Now it is " + "kept the value = %hu", value, pf->vf_nb_qp_max); + return -(EINVAL); + } + + if (num <= I40E_MAX_QP_NUM_PER_VF && rte_is_power_of_2(num)) + pf->vf_nb_qp_max = (uint16_t)num; + else + /* here return 0 to make next valid same argument work */ + PMD_DRV_LOG(WARNING, "Wrong VF queue number = %lu, it must be " + "power of 2 and equal or less than 16 !, Now it is " + "kept the value = %hu", num, pf->vf_nb_qp_max); + + return 0; +} + +static int i40e_pf_config_vf_rxq_number(struct rte_eth_dev *dev) +{ + static const char * const valid_keys[] = {QUEUE_NUM_PER_VF_ARG, ""}; + struct i40e_pf *pf = I40E_DEV_PRIVATE_TO_PF(dev->data->dev_private); + struct rte_kvargs *kvlist; + + /* set default queue number per VF as 4 */ + pf->vf_nb_qp_max = RTE_LIBRTE_I40E_QUEUE_NUM_PER_VF; + + if (dev->device->devargs == NULL) + return 0; + + kvlist = rte_kvargs_parse(dev->device->devargs->args, valid_keys); + if (kvlist == NULL) + return -(EINVAL); + + if (rte_kvargs_count(kvlist, QUEUE_NUM_PER_VF_ARG) > 1) + PMD_DRV_LOG(WARNING, "More than one argument \"%s\" and only " + "the first invalid or last valid one is used !", + QUEUE_NUM_PER_VF_ARG); + + rte_kvargs_process(kvlist, QUEUE_NUM_PER_VF_ARG, + i40e_pf_parse_vf_queue_number_handler, pf); + + rte_kvargs_free(kvlist); + + return 0; +} + static int i40e_pf_parameter_init(struct rte_eth_dev *dev) { @@ -3983,6 +4044,9 @@ i40e_pf_parameter_init(struct rte_eth_dev *dev) PMD_INIT_LOG(ERR, "HW configuration doesn't support SRIOV"); return -EINVAL; } + + i40e_pf_config_vf_rxq_number(dev); + /* Add the parameter init for LFC */ pf->fc_conf.pause_time = I40E_DEFAULT_PAUSE_TIME; pf->fc_conf.high_water[I40E_MAX_TRAFFIC_CLASS] = I40E_DEFAULT_HIGH_WATER; @@ -3992,7 +4056,6 @@ i40e_pf_parameter_init(struct rte_eth_dev *dev) pf->max_num_vsi = hw->func_caps.num_vsis; pf->lan_nb_qp_max = RTE_LIBRTE_I40E_QUEUE_NUM_PER_PF; pf->vmdq_nb_qp_max = RTE_LIBRTE_I40E_QUEUE_NUM_PER_VM; - pf->vf_nb_qp_max = RTE_LIBRTE_I40E_QUEUE_NUM_PER_VF; /* FDir queue/VSI allocation */ pf->fdir_qp_offset = 0; @@ -4022,7 +4085,7 @@ i40e_pf_parameter_init(struct rte_eth_dev *dev) pf->vf_qp_offset = pf->lan_qp_offset + pf->lan_nb_qps; if (hw->func_caps.sr_iov_1_1 && pci_dev->max_vfs) { pf->flags |= I40E_FLAG_SRIOV; - pf->vf_nb_qps = RTE_LIBRTE_I40E_QUEUE_NUM_PER_VF; + pf->vf_nb_qps = pf->vf_nb_qp_max; pf->vf_num = pci_dev->max_vfs; PMD_DRV_LOG(DEBUG, "%u VF VSIs, %u queues per VF VSI, in total %u queues",