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GET /api/patches/108186/?format=api
{ "id": 108186, "url": "http://patches.dpdk.org/api/patches/108186/?format=api", "web_url": "http://patches.dpdk.org/project/dpdk/patch/20220223164333.3834590-2-dkozlyuk@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": "<20220223164333.3834590-2-dkozlyuk@nvidia.com>", "list_archive_url": "https://inbox.dpdk.org/dev/20220223164333.3834590-2-dkozlyuk@nvidia.com", "date": "2022-02-23T16:43:31", "name": "[1/3] common/mlx5: add Netlink event helpers", "commit_ref": null, "pull_url": null, "state": "superseded", "archived": true, "hash": "c9413f1e913579322bb2a2d29865840b5915d833", "submitter": { "id": 2248, "url": "http://patches.dpdk.org/api/people/2248/?format=api", "name": "Dmitry Kozlyuk", "email": "dkozlyuk@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/20220223164333.3834590-2-dkozlyuk@nvidia.com/mbox/", "series": [ { "id": 21833, "url": "http://patches.dpdk.org/api/series/21833/?format=api", "web_url": "http://patches.dpdk.org/project/dpdk/list/?series=21833", "date": "2022-02-23T16:43:30", "name": "net/mlx5: fix link state detection", "version": 1, "mbox": "http://patches.dpdk.org/series/21833/mbox/" } ], "comments": "http://patches.dpdk.org/api/patches/108186/comments/", "check": "success", "checks": "http://patches.dpdk.org/api/patches/108186/checks/", "tags": {}, "related": [], "headers": { "Return-Path": "<dev-bounces@dpdk.org>", "X-Original-To": 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b=KR5Dx2pQXISiMQLW7C07os4azePck13aNo19x3PNGuO/dFheDHqqXUW73SaVf49HSr2Tmo/BQf2uCtkS9thQO31Rci+/HMfylyKHVRyQ8eIiRzWU4wiT1yS2gwPL2FY73OwcfLc2wnPw7sUtqlIhTay4f4yLQSkH8RbaV9RZ9hSZRBu/2ELAo7xgMSrgVSLG1zu22IFTyIGp+DntKvBZ6cAp5ZyVeGUCuYJp/ST3xrgfz1ZD7TYJ7LLa7y37Ujk7i5xdz2y2jL0sBeG3km6/+aATCdwY9+WCJ5/ba21QFA7MTe9PDCWQU2/7hpbfj3TSgWY49GlXXd3IqdLOiauIaQ==", "X-MS-Exchange-Authentication-Results": "spf=pass (sender IP is 12.22.5.234)\n smtp.mailfrom=nvidia.com; dkim=none (message not signed)\n header.d=none;dmarc=pass action=none header.from=nvidia.com;", "Received-SPF": "Pass (protection.outlook.com: domain of nvidia.com designates\n 12.22.5.234 as permitted sender) receiver=protection.outlook.com;\n client-ip=12.22.5.234; helo=mail.nvidia.com;", "From": "Dmitry Kozlyuk <dkozlyuk@nvidia.com>", "To": "<dev@dpdk.org>", "CC": "<stable@dpdk.org>, Viacheslav Ovsiienko <viacheslavo@nvidia.com>, \"Matan\n Azrad\" <matan@nvidia.com>, Ray Kinsella <mdr@ashroe.eu>", "Subject": "[PATCH 1/3] common/mlx5: add Netlink event helpers", "Date": "Wed, 23 Feb 2022 18:43:31 +0200", "Message-ID": "<20220223164333.3834590-2-dkozlyuk@nvidia.com>", "X-Mailer": "git-send-email 2.25.1", "In-Reply-To": "<20220223164333.3834590-1-dkozlyuk@nvidia.com>", "References": "<20220223164333.3834590-1-dkozlyuk@nvidia.com>", "MIME-Version": "1.0", "Content-Transfer-Encoding": "8bit", "Content-Type": "text/plain", "X-EOPAttributedMessage": "0", "X-MS-PublicTrafficType": "Email", "X-MS-Office365-Filtering-Correlation-Id": "62969588-6275-41c3-48b2-08d9f6eba5fd", "X-MS-TrafficTypeDiagnostic": "MWHPR1201MB2476:EE_", "X-Microsoft-Antispam-PRVS": "\n <MWHPR1201MB2476C2EA78831F75169F7516B93C9@MWHPR1201MB2476.namprd12.prod.outlook.com>", "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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SFS:(13230001)(4636009)(40470700004)(36840700001)(46966006)(36860700001)(426003)(6286002)(1076003)(336012)(6916009)(316002)(2616005)(55016003)(86362001)(36756003)(54906003)(5660300002)(40460700003)(83380400001)(26005)(186003)(47076005)(82310400004)(8936002)(2906002)(8676002)(6666004)(81166007)(70206006)(508600001)(4326008)(70586007)(356005)(7696005)(36900700001)(309714004);\n DIR:OUT; SFP:1101;", "X-OriginatorOrg": "Nvidia.com", "X-MS-Exchange-CrossTenant-OriginalArrivalTime": "23 Feb 2022 16:43:41.1129 (UTC)", "X-MS-Exchange-CrossTenant-Network-Message-Id": "\n 62969588-6275-41c3-48b2-08d9f6eba5fd", "X-MS-Exchange-CrossTenant-Id": "43083d15-7273-40c1-b7db-39efd9ccc17a", "X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp": "\n TenantId=43083d15-7273-40c1-b7db-39efd9ccc17a; Ip=[12.22.5.234];\n Helo=[mail.nvidia.com]", "X-MS-Exchange-CrossTenant-AuthSource": "\n CO1NAM11FT055.eop-nam11.prod.protection.outlook.com", "X-MS-Exchange-CrossTenant-AuthAs": "Anonymous", "X-MS-Exchange-CrossTenant-FromEntityHeader": "HybridOnPrem", "X-MS-Exchange-Transport-CrossTenantHeadersStamped": "MWHPR1201MB2476", "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": "Introduce mlx5_nl_read_events() to read Netlink events\n(technically, messages) from a socket that was configured\nto listen for them via a new mlx5_nl_init() parameter.\nAdd mlx5_nl_parse_link_status_update() helper\nto extract information from link-related events.\nThis patch is a shared base for later fixes.\n\nCc: stable@dpdk.org\n\nSigned-off-by: Dmitry Kozlyuk <dkozlyuk@nvidia.com>\nReviewed-by: Viacheslav Ovsiienko <viacheslavo@nvidia.com>\n---\n drivers/common/mlx5/linux/mlx5_common_os.c | 2 +-\n drivers/common/mlx5/linux/mlx5_nl.c | 102 ++++++++++++++++++++-\n drivers/common/mlx5/linux/mlx5_nl.h | 8 +-\n drivers/common/mlx5/version.map | 2 +\n drivers/net/mlx5/linux/mlx5_os.c | 8 +-\n drivers/net/mlx5/linux/mlx5_vlan_os.c | 2 +-\n 6 files changed, 116 insertions(+), 8 deletions(-)", "diff": "diff --git a/drivers/common/mlx5/linux/mlx5_common_os.c b/drivers/common/mlx5/linux/mlx5_common_os.c\nindex 0d3e24e04e..25e09bb55b 100644\n--- a/drivers/common/mlx5/linux/mlx5_common_os.c\n+++ b/drivers/common/mlx5/linux/mlx5_common_os.c\n@@ -487,7 +487,7 @@ mlx5_os_get_ibv_device(const struct rte_pci_addr *addr)\n static int\n mlx5_nl_roce_disable(const char *addr)\n {\n-\tint nlsk_fd = mlx5_nl_init(NETLINK_GENERIC);\n+\tint nlsk_fd = mlx5_nl_init(NETLINK_GENERIC, 0);\n \tint devlink_id;\n \tint enable;\n \tint ret;\ndiff --git a/drivers/common/mlx5/linux/mlx5_nl.c b/drivers/common/mlx5/linux/mlx5_nl.c\nindex fd4c2d2625..5d04857b38 100644\n--- a/drivers/common/mlx5/linux/mlx5_nl.c\n+++ b/drivers/common/mlx5/linux/mlx5_nl.c\n@@ -185,19 +185,22 @@ uint32_t atomic_sn;\n *\n * @param protocol\n * Netlink protocol (e.g. NETLINK_ROUTE, NETLINK_RDMA).\n+ * @param groups\n+ * Groups to listen (e.g. RTMGRP_LINK), can be 0.\n *\n * @return\n * A file descriptor on success, a negative errno value otherwise and\n * rte_errno is set.\n */\n int\n-mlx5_nl_init(int protocol)\n+mlx5_nl_init(int protocol, int groups)\n {\n \tint fd;\n \tint buf_size;\n \tsocklen_t opt_size;\n \tstruct sockaddr_nl local = {\n \t\t.nl_family = AF_NETLINK,\n+\t\t.nl_groups = groups,\n \t};\n \tint ret;\n \n@@ -1862,3 +1865,100 @@ mlx5_nl_enable_roce_set(int nlsk_fd, int family_id, const char *pci_addr,\n \t/* Now, need to reload the driver. */\n \treturn mlx5_nl_driver_reload(nlsk_fd, family_id, pci_addr);\n }\n+\n+/**\n+ * Try to parse a Netlink message as a link status update.\n+ *\n+ * @param hdr\n+ * Netlink message header.\n+ * @param[out] ifindex\n+ * Index of the updated interface.\n+ *\n+ * @return\n+ * 0 on success, negative on failure.\n+ */\n+int\n+mlx5_nl_parse_link_status_update(struct nlmsghdr *hdr, uint32_t *ifindex)\n+{\n+\tstruct ifinfomsg *info;\n+\n+\tswitch (hdr->nlmsg_type) {\n+\tcase RTM_NEWLINK:\n+\tcase RTM_DELLINK:\n+\tcase RTM_GETLINK:\n+\tcase RTM_SETLINK:\n+\t\tinfo = NLMSG_DATA(hdr);\n+\t\t*ifindex = info->ifi_index;\n+\t\treturn 0;\n+\t}\n+\treturn -1;\n+}\n+\n+/**\n+ * Read pending events from a Netlink socket.\n+ *\n+ * @param nlsk_fd\n+ * Netlink socket.\n+ * @param cb\n+ * Callback invoked for each of the events.\n+ * @param cb_arg\n+ * User data for the callback.\n+ *\n+ * @return\n+ * 0 on success, including the case when there are no events.\n+ * Negative on failure and rte_errno is set.\n+ */\n+int\n+mlx5_nl_read_events(int nlsk_fd, mlx5_nl_event_cb *cb, void *cb_arg)\n+{\n+\tchar buf[8192];\n+\tstruct sockaddr_nl addr;\n+\tstruct iovec iov = {\n+\t\t.iov_base = buf,\n+\t\t.iov_len = sizeof(buf),\n+\t};\n+\tstruct msghdr msg = {\n+\t\t.msg_name = &addr,\n+\t\t.msg_namelen = sizeof(addr),\n+\t\t.msg_iov = &iov,\n+\t\t.msg_iovlen = 1,\n+\t};\n+\tstruct nlmsghdr *hdr;\n+\tssize_t size;\n+\n+\twhile (1) {\n+\t\tsize = recvmsg(nlsk_fd, &msg, MSG_DONTWAIT);\n+\t\tif (size < 0) {\n+\t\t\tif (errno == EAGAIN)\n+\t\t\t\treturn 0;\n+\t\t\tif (errno == EINTR)\n+\t\t\t\tcontinue;\n+\t\t\tDRV_LOG(DEBUG, \"Failed to receive netlink message: %s\",\n+\t\t\t\tstrerror(errno));\n+\t\t\trte_errno = errno;\n+\t\t\treturn -rte_errno;\n+\t\t}\n+\t\thdr = (struct nlmsghdr *)buf;\n+\t\twhile (size >= (ssize_t)sizeof(*hdr)) {\n+\t\t\tssize_t msg_len = hdr->nlmsg_len;\n+\t\t\tssize_t data_len = msg_len - sizeof(*hdr);\n+\t\t\tssize_t aligned_len;\n+\n+\t\t\tif (data_len < 0) {\n+\t\t\t\tDRV_LOG(DEBUG, \"Netlink message too short\");\n+\t\t\t\trte_errno = EINVAL;\n+\t\t\t\treturn -rte_errno;\n+\t\t\t}\n+\t\t\taligned_len = NLMSG_ALIGN(msg_len);\n+\t\t\tif (aligned_len > size) {\n+\t\t\t\tDRV_LOG(DEBUG, \"Netlink message too long\");\n+\t\t\t\trte_errno = EINVAL;\n+\t\t\t\treturn -rte_errno;\n+\t\t\t}\n+\t\t\tcb(hdr, cb_arg);\n+\t\t\thdr = RTE_PTR_ADD(hdr, aligned_len);\n+\t\t\tsize -= aligned_len;\n+\t\t}\n+\t}\n+\treturn 0;\n+}\ndiff --git a/drivers/common/mlx5/linux/mlx5_nl.h b/drivers/common/mlx5/linux/mlx5_nl.h\nindex 2063c0deeb..0b7552338a 100644\n--- a/drivers/common/mlx5/linux/mlx5_nl.h\n+++ b/drivers/common/mlx5/linux/mlx5_nl.h\n@@ -11,6 +11,7 @@\n \n #include \"mlx5_common.h\"\n \n+typedef void (mlx5_nl_event_cb)(struct nlmsghdr *hdr, void *user_data);\n \n /* VLAN netdev for VLAN workaround. */\n struct mlx5_nl_vlan_dev {\n@@ -30,7 +31,7 @@ struct mlx5_nl_vlan_vmwa_context {\n };\n \n __rte_internal\n-int mlx5_nl_init(int protocol);\n+int mlx5_nl_init(int protocol, int groups);\n __rte_internal\n int mlx5_nl_mac_addr_add(int nlsk_fd, unsigned int iface_idx, uint64_t *mac_own,\n \t\t\t struct rte_ether_addr *mac, uint32_t index);\n@@ -75,4 +76,9 @@ int mlx5_nl_enable_roce_get(int nlsk_fd, int family_id, const char *pci_addr,\n int mlx5_nl_enable_roce_set(int nlsk_fd, int family_id, const char *pci_addr,\n \t\t\t int enable);\n \n+__rte_internal\n+int mlx5_nl_read_events(int nlsk_fd, mlx5_nl_event_cb *cb, void *cb_arg);\n+__rte_internal\n+int mlx5_nl_parse_link_status_update(struct nlmsghdr *hdr, uint32_t *ifindex);\n+\n #endif /* RTE_PMD_MLX5_NL_H_ */\ndiff --git a/drivers/common/mlx5/version.map b/drivers/common/mlx5/version.map\nindex 462b7cea5e..d9b7ccacde 100644\n--- a/drivers/common/mlx5/version.map\n+++ b/drivers/common/mlx5/version.map\n@@ -123,9 +123,11 @@ INTERNAL {\n \tmlx5_nl_mac_addr_flush; # WINDOWS_NO_EXPORT\n \tmlx5_nl_mac_addr_remove; # WINDOWS_NO_EXPORT\n \tmlx5_nl_mac_addr_sync; # WINDOWS_NO_EXPORT\n+\tmlx5_nl_parse_link_status_update; # WINDOWS_NO_EXPORT\n \tmlx5_nl_port_state; # WINDOWS_NO_EXPORT\n \tmlx5_nl_portnum; # WINDOWS_NO_EXPORT\n \tmlx5_nl_promisc; # WINDOWS_NO_EXPORT\n+\tmlx5_nl_read_events; # WINDOWS_NO_EXPORT\n \tmlx5_nl_switch_info; # WINDOWS_NO_EXPORT\n \tmlx5_nl_vf_mac_addr_modify; # WINDOWS_NO_EXPORT\n \tmlx5_nl_vlan_vmwa_create; # WINDOWS_NO_EXPORT\ndiff --git a/drivers/net/mlx5/linux/mlx5_os.c b/drivers/net/mlx5/linux/mlx5_os.c\nindex bbe05bb837..602473e8f7 100644\n--- a/drivers/net/mlx5/linux/mlx5_os.c\n+++ b/drivers/net/mlx5/linux/mlx5_os.c\n@@ -1086,7 +1086,7 @@ mlx5_dev_spawn(struct rte_device *dpdk_dev,\n \t\t\" old OFED/rdma-core version or firmware configuration\");\n #endif\n \tconfig->mpls_en = mpls_en;\n-\tnl_rdma = mlx5_nl_init(NETLINK_RDMA);\n+\tnl_rdma = mlx5_nl_init(NETLINK_RDMA, 0);\n \t/* Check port status. */\n \tif (spawn->phys_port <= UINT8_MAX) {\n \t\t/* Legacy Verbs api only support u8 port number. */\n@@ -1133,7 +1133,7 @@ mlx5_dev_spawn(struct rte_device *dpdk_dev,\n \tpriv->mtu = RTE_ETHER_MTU;\n \t/* Some internal functions rely on Netlink sockets, open them now. */\n \tpriv->nl_socket_rdma = nl_rdma;\n-\tpriv->nl_socket_route =\tmlx5_nl_init(NETLINK_ROUTE);\n+\tpriv->nl_socket_route =\tmlx5_nl_init(NETLINK_ROUTE, 0);\n \tpriv->representor = !!switch_info->representor;\n \tpriv->master = !!switch_info->master;\n \tpriv->domain_id = RTE_ETH_DEV_SWITCH_DOMAIN_ID_INVALID;\n@@ -2130,8 +2130,8 @@ mlx5_os_pci_probe_pf(struct mlx5_common_device *cdev,\n \t * matching ones, gathering into the list.\n \t */\n \tstruct ibv_device *ibv_match[ret + 1];\n-\tint nl_route = mlx5_nl_init(NETLINK_ROUTE);\n-\tint nl_rdma = mlx5_nl_init(NETLINK_RDMA);\n+\tint nl_route = mlx5_nl_init(NETLINK_ROUTE, 0);\n+\tint nl_rdma = mlx5_nl_init(NETLINK_RDMA, 0);\n \tunsigned int i;\n \n \twhile (ret-- > 0) {\ndiff --git a/drivers/net/mlx5/linux/mlx5_vlan_os.c b/drivers/net/mlx5/linux/mlx5_vlan_os.c\nindex 005904bdfe..7ee2460a23 100644\n--- a/drivers/net/mlx5/linux/mlx5_vlan_os.c\n+++ b/drivers/net/mlx5/linux/mlx5_vlan_os.c\n@@ -136,7 +136,7 @@ mlx5_vlan_vmwa_init(struct rte_eth_dev *dev, uint32_t ifindex)\n \t\treturn NULL;\n \t}\n \trte_spinlock_init(&vmwa->sl);\n-\tvmwa->nl_socket = mlx5_nl_init(NETLINK_ROUTE);\n+\tvmwa->nl_socket = mlx5_nl_init(NETLINK_ROUTE, 0);\n \tif (vmwa->nl_socket < 0) {\n \t\tDRV_LOG(WARNING,\n \t\t\t\"Can not create Netlink socket\"\n", "prefixes": [ "1/3" ] }