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 982A9A057C; Thu, 26 Mar 2020 08:23:30 +0100 (CET) Received: from [92.243.14.124] (localhost [127.0.0.1]) by dpdk.org (Postfix) with ESMTP id A28391C07E; Thu, 26 Mar 2020 08:23:27 +0100 (CET) Received: from mga11.intel.com (mga11.intel.com [192.55.52.93]) by dpdk.org (Postfix) with ESMTP id 87BF54CA7 for ; Thu, 26 Mar 2020 08:23:21 +0100 (CET) IronPort-SDR: jjSbSJW4+vwoRdr4WU6soyR6ZBVvFI0SimHQv/IVV0di5r97tHUvU6fNgtHfm+6GMSfKa9QN35 fbSqVlrf2cYw== X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga003.fm.intel.com ([10.253.24.29]) by fmsmga102.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 26 Mar 2020 00:23:21 -0700 IronPort-SDR: eEMCkXtf6mjGRDx0vopxEsMtJl8Fkazb6lw5SeemiluXE5sjQruL8vOlsKNsw0S1KlYQyLH8cw Qe4fDWkldzAw== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.72,307,1580803200"; d="scan'208";a="293555570" Received: from npg-dpdk-haiyue-1.sh.intel.com ([10.67.119.213]) by FMSMGA003.fm.intel.com with ESMTP; 26 Mar 2020 00:23:19 -0700 From: Haiyue Wang To: dev@dpdk.org, xiaolong.ye@intel.com, qi.z.zhang@intel.com, jingjing.wu@intel.com, qiming.yang@intel.com, beilei.xing@intel.com Cc: wei.zhao1@intel.com, Haiyue Wang Date: Thu, 26 Mar 2020 15:15:19 +0800 Message-Id: <20200326071525.4088-2-haiyue.wang@intel.com> X-Mailer: git-send-email 2.26.0 In-Reply-To: <20200326071525.4088-1-haiyue.wang@intel.com> References: <20200309141437.11800-1-haiyue.wang@intel.com> <20200326071525.4088-1-haiyue.wang@intel.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Subject: [dpdk-dev] [PATCH v5 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 Acked-by: Jingjing Wu Acked-by: Qi Zhang --- 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