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 E19DEA058E; Thu, 26 Mar 2020 04:11:54 +0100 (CET) Received: from [92.243.14.124] (localhost [127.0.0.1]) by dpdk.org (Postfix) with ESMTP id AF40C1C0B1; Thu, 26 Mar 2020 04:11:47 +0100 (CET) Received: from mga12.intel.com (mga12.intel.com [192.55.52.136]) by dpdk.org (Postfix) with ESMTP id B2EE61C05C for ; Thu, 26 Mar 2020 04:11:42 +0100 (CET) IronPort-SDR: UKfkorYFzjpIcUN9XZ83Ae/38OmAgvT7Lc7k/qpUL15V9l+eEdfxQLqyhVlJtKJJh0+J2C87jC EbMOaHFCZDGQ== X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga003.jf.intel.com ([10.7.209.27]) by fmsmga106.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 25 Mar 2020 20:11:42 -0700 IronPort-SDR: CxvY9PM14P9lJmrTKYd154+ju68dVcbUmQGFDLv5tbMH37ViY5MAE/nKZYSu/OrYPY9ID81tcE A0iDEfYtUumA== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.72,306,1580803200"; d="scan'208";a="247406842" Received: from npg-dpdk-haiyue-1.sh.intel.com ([10.67.119.213]) by orsmga003.jf.intel.com with ESMTP; 25 Mar 2020 20:11:40 -0700 From: Haiyue Wang To: dev@dpdk.org, xiaolong.ye@intel.com, qi.z.zhang@intel.com, qiming.yang@intel.com, beilei.xing@intel.com Cc: wei.zhao1@intel.com, Haiyue Wang Date: Thu, 26 Mar 2020 11:03:40 +0800 Message-Id: <20200326030346.32907-2-haiyue.wang@intel.com> X-Mailer: git-send-email 2.26.0 In-Reply-To: <20200326030346.32907-1-haiyue.wang@intel.com> References: <20200309141437.11800-1-haiyue.wang@intel.com> <20200326030346.32907-1-haiyue.wang@intel.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Subject: [dpdk-dev] [PATCH v4 1/7] net/iavf: stop the PCI probe in DCF mode 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" A new DCF PMD will be introduced, which runs on Intel VF hardware, and it is a pure software design to control the advance functionality (such as switch, ACL) for rest of the VFs. So if the DCF (Device Config Function) mode is specified by the devarg 'cap=dcf', then it will stop the PCI probe in the iavf PMD. Signed-off-by: Haiyue Wang Reviewed-by: Xiaolong Ye --- drivers/net/iavf/iavf_ethdev.c | 43 ++++++++++++++++++++++++++++++++++ 1 file changed, 43 insertions(+) diff --git a/drivers/net/iavf/iavf_ethdev.c b/drivers/net/iavf/iavf_ethdev.c index 34913f9c4..c0b95e169 100644 --- a/drivers/net/iavf/iavf_ethdev.c +++ b/drivers/net/iavf/iavf_ethdev.c @@ -1416,9 +1416,51 @@ iavf_dev_uninit(struct rte_eth_dev *dev) return 0; } +static int +iavf_dcf_cap_check_handler(__rte_unused const char *key, + const char *value, __rte_unused void *opaque) +{ + if (strcmp(value, "dcf")) + return -1; + + return 0; +} + +static int +iavf_dcf_cap_selected(struct rte_devargs *devargs) +{ + struct rte_kvargs *kvlist; + const char *key = "cap"; + int ret = 0; + + if (devargs == NULL) + return 0; + + kvlist = rte_kvargs_parse(devargs->args, NULL); + if (kvlist == NULL) + return 0; + + if (!rte_kvargs_count(kvlist, key)) + goto exit; + + /* dcf capability selected when there's a key-value pair: cap=dcf */ + if (rte_kvargs_process(kvlist, key, + iavf_dcf_cap_check_handler, NULL) < 0) + goto exit; + + ret = 1; + +exit: + rte_kvargs_free(kvlist); + return ret; +} + static int eth_iavf_pci_probe(struct rte_pci_driver *pci_drv __rte_unused, struct rte_pci_device *pci_dev) { + if (iavf_dcf_cap_selected(pci_dev->device.devargs)) + return 1; + return rte_eth_dev_pci_generic_probe(pci_dev, sizeof(struct iavf_adapter), iavf_dev_init); } @@ -1439,6 +1481,7 @@ static struct rte_pci_driver rte_iavf_pmd = { RTE_PMD_REGISTER_PCI(net_iavf, rte_iavf_pmd); RTE_PMD_REGISTER_PCI_TABLE(net_iavf, pci_id_iavf_map); RTE_PMD_REGISTER_KMOD_DEP(net_iavf, "* igb_uio | vfio-pci"); +RTE_PMD_REGISTER_PARAM_STRING(net_iavf, "cap=dcf"); RTE_INIT(iavf_init_log) { iavf_logtype_init = rte_log_register("pmd.net.iavf.init"); -- 2.26.0