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GET /api/patches/133669/?format=api
{ "id": 133669, "url": "http://patches.dpdk.org/api/patches/133669/?format=api", "web_url": "http://patches.dpdk.org/project/dpdk/patch/20231031142733.2009166-5-dsosnowski@nvidia.com/", "project": { "id": 1, "url": "http://patches.dpdk.org/api/projects/1/?format=api", "name": "DPDK", "link_name": "dpdk", "list_id": "dev.dpdk.org", "list_email": "dev@dpdk.org", "web_url": "http://core.dpdk.org", "scm_url": "git://dpdk.org/dpdk", "webscm_url": "http://git.dpdk.org/dpdk", "list_archive_url": "https://inbox.dpdk.org/dev", "list_archive_url_format": "https://inbox.dpdk.org/dev/{}", "commit_url_format": "" }, "msgid": "<20231031142733.2009166-5-dsosnowski@nvidia.com>", "list_archive_url": "https://inbox.dpdk.org/dev/20231031142733.2009166-5-dsosnowski@nvidia.com", "date": "2023-10-31T14:27:29", "name": "[4/8] net/mlx5: add sysfs check for Multiport E-Switch", "commit_ref": null, "pull_url": null, "state": "accepted", "archived": true, "hash": "a0f8950c69516f536a920b4083e4737ca3ff9e5c", "submitter": { "id": 2386, "url": "http://patches.dpdk.org/api/people/2386/?format=api", "name": "Dariusz Sosnowski", "email": "dsosnowski@nvidia.com" }, "delegate": { "id": 3268, "url": "http://patches.dpdk.org/api/users/3268/?format=api", "username": "rasland", "first_name": "Raslan", "last_name": "Darawsheh", "email": "rasland@nvidia.com" }, "mbox": "http://patches.dpdk.org/project/dpdk/patch/20231031142733.2009166-5-dsosnowski@nvidia.com/mbox/", "series": [ { "id": 30075, "url": "http://patches.dpdk.org/api/series/30075/?format=api", "web_url": "http://patches.dpdk.org/project/dpdk/list/?series=30075", "date": "2023-10-31T14:27:26", "name": "net/mlx5: add Multiport E-Switch support", "version": 1, "mbox": "http://patches.dpdk.org/series/30075/mbox/" } ], "comments": "http://patches.dpdk.org/api/patches/133669/comments/", "check": "success", "checks": "http://patches.dpdk.org/api/patches/133669/checks/", "tags": {}, "related": [], "headers": { "Return-Path": "<dev-bounces@dpdk.org>", "X-Original-To": "patchwork@inbox.dpdk.org", "Delivered-To": "patchwork@inbox.dpdk.org", "Received": [ "from mails.dpdk.org (mails.dpdk.org [217.70.189.124])\n\tby inbox.dpdk.org (Postfix) with ESMTP id 81D4E43252;\n\tTue, 31 Oct 2023 15:28:15 +0100 (CET)", "from mails.dpdk.org (localhost [127.0.0.1])\n\tby mails.dpdk.org (Postfix) with ESMTP id 97075406A2;\n\tTue, 31 Oct 2023 15:28:14 +0100 (CET)", "from NAM11-CO1-obe.outbound.protection.outlook.com\n (mail-co1nam11on2067.outbound.protection.outlook.com [40.107.220.67])\n by mails.dpdk.org (Postfix) with ESMTP id DED6D40284\n for <dev@dpdk.org>; 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helo=mail.nvidia.com; pr=C", "From": "Dariusz Sosnowski <dsosnowski@nvidia.com>", "To": "Matan Azrad <matan@nvidia.com>, Viacheslav Ovsiienko\n <viacheslavo@nvidia.com>, Ori Kam <orika@nvidia.com>, Suanming Mou\n <suanmingm@nvidia.com>", "CC": "<dev@dpdk.org>, Raslan Darawsheh <rasland@nvidia.com>", "Subject": "[PATCH 4/8] net/mlx5: add sysfs check for Multiport E-Switch", "Date": "Tue, 31 Oct 2023 16:27:29 +0200", "Message-ID": "<20231031142733.2009166-5-dsosnowski@nvidia.com>", "X-Mailer": "git-send-email 2.25.1", "In-Reply-To": "<20231031142733.2009166-1-dsosnowski@nvidia.com>", "References": "<20231031142733.2009166-1-dsosnowski@nvidia.com>", "MIME-Version": "1.0", "Content-Transfer-Encoding": "8bit", "Content-Type": "text/plain", "X-Originating-IP": "[10.126.231.35]", "X-ClientProxiedBy": "rnnvmail202.nvidia.com (10.129.68.7) To\n rnnvmail201.nvidia.com (10.129.68.8)", "X-EOPAttributedMessage": "0", "X-MS-PublicTrafficType": "Email", "X-MS-TrafficTypeDiagnostic": "CY4PEPF0000EDD2:EE_|CY8PR12MB8194:EE_", "X-MS-Office365-Filtering-Correlation-Id": "23bd9477-7c79-4f4f-60b2-08dbda1d9c0a", "X-MS-Exchange-SenderADCheck": "1", "X-MS-Exchange-AntiSpam-Relay": "0", "X-Microsoft-Antispam": "BCL:0;", "X-Microsoft-Antispam-Message-Info": "\n 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", "X-Forefront-Antispam-Report": "CIP:216.228.117.161; CTRY:US; LANG:en; SCL:1;\n SRV:;\n IPV:NLI; SFV:NSPM; H:mail.nvidia.com; PTR:dc6edge2.nvidia.com; CAT:NONE;\n SFS:(13230031)(4636009)(396003)(346002)(376002)(136003)(39860400002)(230922051799003)(82310400011)(1800799009)(186009)(64100799003)(451199024)(36840700001)(46966006)(40470700004)(426003)(6286002)(16526019)(26005)(1076003)(55016003)(40460700003)(86362001)(36756003)(40480700001)(82740400003)(356005)(7636003)(6666004)(83380400001)(2906002)(5660300002)(7696005)(107886003)(36860700001)(478600001)(336012)(47076005)(8936002)(8676002)(316002)(4326008)(6636002)(54906003)(70586007)(41300700001)(2616005)(110136005)(70206006);\n DIR:OUT; SFP:1101;", "X-OriginatorOrg": "Nvidia.com", "X-MS-Exchange-CrossTenant-OriginalArrivalTime": "31 Oct 2023 14:28:10.8639 (UTC)", "X-MS-Exchange-CrossTenant-Network-Message-Id": "\n 23bd9477-7c79-4f4f-60b2-08dbda1d9c0a", "X-MS-Exchange-CrossTenant-Id": "43083d15-7273-40c1-b7db-39efd9ccc17a", "X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp": "\n TenantId=43083d15-7273-40c1-b7db-39efd9ccc17a; Ip=[216.228.117.161];\n Helo=[mail.nvidia.com]", "X-MS-Exchange-CrossTenant-AuthSource": "\n CY4PEPF0000EDD2.namprd03.prod.outlook.com", "X-MS-Exchange-CrossTenant-AuthAs": "Anonymous", "X-MS-Exchange-CrossTenant-FromEntityHeader": "HybridOnPrem", "X-MS-Exchange-Transport-CrossTenantHeadersStamped": "CY8PR12MB8194", "X-BeenThere": "dev@dpdk.org", "X-Mailman-Version": "2.1.29", "Precedence": "list", "List-Id": "DPDK patches and discussions <dev.dpdk.org>", "List-Unsubscribe": "<https://mails.dpdk.org/options/dev>,\n <mailto:dev-request@dpdk.org?subject=unsubscribe>", "List-Archive": "<http://mails.dpdk.org/archives/dev/>", "List-Post": "<mailto:dev@dpdk.org>", "List-Help": "<mailto:dev-request@dpdk.org?subject=help>", "List-Subscribe": "<https://mails.dpdk.org/listinfo/dev>,\n <mailto:dev-request@dpdk.org?subject=subscribe>", "Errors-To": "dev-bounces@dpdk.org" }, "content": "This patch implements checking if Multiport E-Switch is enabled\non a given PCI device, using sysfs Linux kernel interface.\nThis facility will be used in follow up commits,\nwhich add support for such configuration to mlx5 PMD.\n\nMLNX_OFED mlx5_core kernel module versions which support\nMultiport E-Switch do not expose this configuration through Devlink,\nbut through sysfs interface.\nIf such a version is used, then Multiport E-Switch can be enabled\n(or its state can be probed) through a sysfs file under path:\n\n # <ifname> should be substituted with Linux interface name.\n /sys/class/net/<ifname>/compat/devlink/lag_port_select_mode\n\nWriting \"multiport_esw\" to this file enables Multiport E-Switch.\nIf \"multiport_esw\" is read from this file, then\nMultiport E-Switch is enabled.\n\nIf this file does not exist or writing \"multiport_esw\" to this file,\nraises an error, then Multiport E-Switch is not supported.\n\nSigned-off-by: Dariusz Sosnowski <dsosnowski@nvidia.com>\nAcked-by: Viacheslav Ovsiienko <viacheslavo@nvidia.com>\n---\n drivers/net/mlx5/linux/mlx5_os.c | 69 ++++++++++++++++++++++++++++++++\n 1 file changed, 69 insertions(+)", "diff": "diff --git a/drivers/net/mlx5/linux/mlx5_os.c b/drivers/net/mlx5/linux/mlx5_os.c\nindex 2f08f2354e..7a656a7237 100644\n--- a/drivers/net/mlx5/linux/mlx5_os.c\n+++ b/drivers/net/mlx5/linux/mlx5_os.c\n@@ -1931,6 +1931,75 @@ mlx5_device_bond_pci_match(const char *ibdev_name,\n \treturn pf;\n }\n \n+#define SYSFS_MPESW_PARAM_MAX_LEN 16\n+\n+static __rte_unused int\n+mlx5_sysfs_esw_multiport_get(struct ibv_device *ibv, struct rte_pci_addr *pci_addr, int *enabled)\n+{\n+\tint nl_rdma;\n+\tunsigned int n_ports;\n+\tunsigned int i;\n+\tint ret;\n+\n+\t/* Provide correct value to have defined enabled state in case of an error. */\n+\t*enabled = 0;\n+\tnl_rdma = mlx5_nl_init(NETLINK_RDMA, 0);\n+\tif (nl_rdma < 0)\n+\t\treturn nl_rdma;\n+\tn_ports = mlx5_nl_portnum(nl_rdma, ibv->name);\n+\tif (!n_ports) {\n+\t\tret = -rte_errno;\n+\t\tgoto close_nl_rdma;\n+\t}\n+\tfor (i = 1; i <= n_ports; ++i) {\n+\t\tunsigned int ifindex;\n+\t\tchar ifname[IF_NAMESIZE + 1];\n+\t\tstruct rte_pci_addr if_pci_addr;\n+\t\tchar mpesw[SYSFS_MPESW_PARAM_MAX_LEN + 1];\n+\t\tFILE *sysfs;\n+\t\tint n;\n+\n+\t\tifindex = mlx5_nl_ifindex(nl_rdma, ibv->name, i);\n+\t\tif (!ifindex)\n+\t\t\tcontinue;\n+\t\tif (!if_indextoname(ifindex, ifname))\n+\t\t\tcontinue;\n+\t\tMKSTR(sysfs_if_path, \"/sys/class/net/%s\", ifname);\n+\t\tif (mlx5_get_pci_addr(sysfs_if_path, &if_pci_addr))\n+\t\t\tcontinue;\n+\t\tif (pci_addr->domain != if_pci_addr.domain ||\n+\t\t pci_addr->bus != if_pci_addr.bus ||\n+\t\t pci_addr->devid != if_pci_addr.devid ||\n+\t\t pci_addr->function != if_pci_addr.function)\n+\t\t\tcontinue;\n+\t\tMKSTR(sysfs_mpesw_path,\n+\t\t \"/sys/class/net/%s/compat/devlink/lag_port_select_mode\", ifname);\n+\t\tsysfs = fopen(sysfs_mpesw_path, \"r\");\n+\t\tif (!sysfs)\n+\t\t\tcontinue;\n+\t\tn = fscanf(sysfs, \"%\" RTE_STR(SYSFS_MPESW_PARAM_MAX_LEN) \"s\", mpesw);\n+\t\tfclose(sysfs);\n+\t\tif (n != 1)\n+\t\t\tcontinue;\n+\t\tret = 0;\n+\t\tif (strcmp(mpesw, \"multiport_esw\") == 0) {\n+\t\t\t*enabled = 1;\n+\t\t\tbreak;\n+\t\t}\n+\t\t*enabled = 0;\n+\t\tbreak;\n+\t}\n+\tif (i > n_ports) {\n+\t\tDRV_LOG(DEBUG, \"Unable to get Multiport E-Switch state by sysfs.\");\n+\t\trte_errno = ENOENT;\n+\t\tret = -rte_errno;\n+\t}\n+\n+close_nl_rdma:\n+\tclose(nl_rdma);\n+\treturn ret;\n+}\n+\n /**\n * Register a PCI device within bonding.\n *\n", "prefixes": [ "4/8" ] }