From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from dpdk.org (dpdk.org [92.243.14.124]) by dpdk.space (Postfix) with ESMTP id 03B74A05D3 for ; Tue, 26 Mar 2019 16:38:15 +0100 (CET) Received: from [92.243.14.124] (localhost [127.0.0.1]) by dpdk.org (Postfix) with ESMTP id D0FE11B137; Tue, 26 Mar 2019 16:36:31 +0100 (CET) Received: from mellanox.co.il (mail-il-dmz.mellanox.com [193.47.165.129]) by dpdk.org (Postfix) with ESMTP id 83D681B13C for ; Tue, 26 Mar 2019 16:36:05 +0100 (CET) Received: from Internal Mail-Server by MTLPINE1 (envelope-from viacheslavo@mellanox.com) with ESMTPS (AES256-SHA encrypted); 26 Mar 2019 17:36:02 +0200 Received: from pegasus12.mtr.labs.mlnx. (pegasus12.mtr.labs.mlnx [10.210.17.40]) by labmailer.mlnx (8.13.8/8.13.8) with ESMTP id x2QFa1wY019637; Tue, 26 Mar 2019 17:36:02 +0200 From: Viacheslav Ovsiienko To: dev@dpdk.org Cc: shahafs@mellanox.com Date: Tue, 26 Mar 2019 15:35:20 +0000 Message-Id: <1553614522-12151-12-git-send-email-viacheslavo@mellanox.com> X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <1553614522-12151-1-git-send-email-viacheslavo@mellanox.com> References: <1553533414-9911-1-git-send-email-viacheslavo@mellanox.com> <1553614522-12151-1-git-send-email-viacheslavo@mellanox.com> Subject: [dpdk-dev] [PATCH v3 11/13] net/mlx5: update install/uninstall int handler routines 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" Content-Type: text/plain; charset="UTF-8" Message-ID: <20190326153520.F0HsfMmnPFA7pCRAqAj0Z98G2fcQg3OQc8HU9EmSa3g@z> We are implementing the support for multport Infiniband device withj representors attached to these multiple ports. Asynchronous device event notifications (link status change, removal event, etc.) should be shared between ports. We are going to implement shared event handler and this patch introduces appropriate device structure changes and updated event handler install and uninstall routines. Signed-off-by: Viacheslav Ovsiienko Acked-by: Shahaf Shuler --- drivers/net/mlx5/mlx5.c | 19 ++++++- drivers/net/mlx5/mlx5.h | 3 +- drivers/net/mlx5/mlx5_ethdev.c | 118 ++++++++++++++++++++++++++++++++--------- 3 files changed, 112 insertions(+), 28 deletions(-) diff --git a/drivers/net/mlx5/mlx5.c b/drivers/net/mlx5/mlx5.c index 8f35546..0c81fda 100644 --- a/drivers/net/mlx5/mlx5.c +++ b/drivers/net/mlx5/mlx5.c @@ -166,6 +166,7 @@ struct mlx5_dev_spawn_data { { struct mlx5_ibv_shared *sh; int err = 0; + uint32_t i; assert(spawn); /* Secondary process should not create the shared context. */ @@ -215,6 +216,14 @@ struct mlx5_dev_spawn_data { sizeof(sh->ibdev_name)); strncpy(sh->ibdev_path, sh->ctx->device->ibdev_path, sizeof(sh->ibdev_path)); + pthread_mutex_init(&sh->intr_mutex, NULL); + /* + * Setting port_id to max unallowed value means + * there is no interrupt subhandler installed for + * the given port index i. + */ + for (i = 0; i < sh->max_port; i++) + sh->port[i].ih_port_id = RTE_MAX_ETHPORTS; sh->pd = mlx5_glue->alloc_pd(sh->ctx); if (sh->pd == NULL) { DRV_LOG(ERR, "PD allocation failure"); @@ -269,6 +278,15 @@ struct mlx5_dev_spawn_data { if (--sh->refcnt) goto exit; LIST_REMOVE(sh, next); + /* + * Ensure there is no async event handler installed. + * Only primary process handles async device events. + **/ + assert(!sh->intr_cnt); + if (sh->intr_cnt) + rte_intr_callback_unregister + (&sh->intr_handle, mlx5_dev_interrupt_handler, sh); + pthread_mutex_destroy(&sh->intr_mutex); if (sh->pd) claim_zero(mlx5_glue->dealloc_pd(sh->pd)); if (sh->ctx) @@ -278,7 +296,6 @@ struct mlx5_dev_spawn_data { pthread_mutex_unlock(&mlx5_ibv_list_mutex); } - /** * Prepare shared data between primary and secondary process. */ diff --git a/drivers/net/mlx5/mlx5.h b/drivers/net/mlx5/mlx5.h index 573629a..23f3e34 100644 --- a/drivers/net/mlx5/mlx5.h +++ b/drivers/net/mlx5/mlx5.h @@ -222,6 +222,8 @@ struct mlx5_ibv_shared { char ibdev_name[IBV_SYSFS_NAME_MAX]; /* IB device name. */ char ibdev_path[IBV_SYSFS_PATH_MAX]; /* IB device path for secondary */ struct ibv_device_attr_ex device_attr; /* Device properties. */ + pthread_mutex_t intr_mutex; /* Interrupt config mutex. */ + uint32_t intr_cnt; /* Interrupt handler reference counter. */ struct rte_intr_handle intr_handle; /* Interrupt handler for device. */ struct mlx5_ibv_shared_port port[]; /* per device port data array. */ }; @@ -252,7 +254,6 @@ struct mlx5_priv { struct mlx5_txq_data *(*txqs)[]; /* TX queues. */ struct rte_mempool *mprq_mp; /* Mempool for Multi-Packet RQ. */ struct rte_eth_rss_conf rss_conf; /* RSS configuration. */ - struct rte_intr_handle intr_handle; /* Interrupt handler. */ unsigned int (*reta_idx)[]; /* RETA index table. */ unsigned int reta_idx_n; /* RETA index size. */ struct mlx5_drop drop_queue; /* Flow drop queues. */ diff --git a/drivers/net/mlx5/mlx5_ethdev.c b/drivers/net/mlx5/mlx5_ethdev.c index 2ad3231..0e588da 100644 --- a/drivers/net/mlx5/mlx5_ethdev.c +++ b/drivers/net/mlx5/mlx5_ethdev.c @@ -1109,6 +1109,96 @@ int mlx5_fw_version_get(struct rte_eth_dev *dev, char *fw_ver, size_t fw_size) } /** + * Uninstall shared asynchronous device events handler. + * This function is implemeted to support event sharing + * between multiple ports of single IB device. + * + * @param dev + * Pointer to Ethernet device. + */ +static void +mlx5_dev_shared_handler_uninstall(struct rte_eth_dev *dev) +{ + struct mlx5_priv *priv = dev->data->dev_private; + struct mlx5_ibv_shared *sh = priv->sh; + + if (rte_eal_process_type() != RTE_PROC_PRIMARY) + return; + pthread_mutex_lock(&sh->intr_mutex); + assert(priv->ibv_port); + assert(priv->ibv_port <= sh->max_port); + assert(dev->data->port_id < RTE_MAX_ETHPORTS); + if (sh->port[priv->ibv_port - 1].ih_port_id >= RTE_MAX_ETHPORTS) + goto exit; + assert(sh->port[priv->ibv_port - 1].port_id == + (uint32_t)dev->data->port_id); + assert(sh->intr_cnt); + sh->port[priv->ibv_port - 1].ih_port_id = RTE_MAX_ETHPORTS; + if (!sh->intr_cnt || --sh->intr_cnt) + goto exit; + rte_intr_callback_unregister(&sh->intr_handle, + mlx5_dev_interrupt_handler, sh); + sh->intr_handle.fd = 0; + sh->intr_handle.type = RTE_INTR_HANDLE_UNKNOWN; +exit: + pthread_mutex_unlock(&sh->intr_mutex); +} + +/** + * Install shared asyncronous device events handler. + * This function is implemeted to support event sharing + * between multiple ports of single IB device. + * + * @param dev + * Pointer to Ethernet device. + */ +static void +mlx5_dev_shared_handler_install(struct rte_eth_dev *dev) +{ + struct mlx5_priv *priv = dev->data->dev_private; + struct mlx5_ibv_shared *sh = priv->sh; + int ret; + int flags; + + if (rte_eal_process_type() != RTE_PROC_PRIMARY) + return; + pthread_mutex_lock(&sh->intr_mutex); + assert(priv->ibv_port); + assert(priv->ibv_port <= sh->max_port); + assert(dev->data->port_id < RTE_MAX_ETHPORTS); + if (sh->port[priv->ibv_port - 1].ih_port_id < RTE_MAX_ETHPORTS) { + /* The handler is already installed for this port. */ + assert(sh->intr_cnt); + goto exit; + } + sh->port[priv->ibv_port - 1].ih_port_id = (uint32_t)dev->data->port_id; + if (sh->intr_cnt) { + sh->intr_cnt++; + goto exit; + } + /* No shared handler installed. */ + assert(sh->ctx->async_fd > 0); + flags = fcntl(sh->ctx->async_fd, F_GETFL); + ret = fcntl(sh->ctx->async_fd, F_SETFL, flags | O_NONBLOCK); + if (ret) { + DRV_LOG(INFO, "failed to change file descriptor" + " async event queue"); + /* Indicate there will be no interrupts. */ + dev->data->dev_conf.intr_conf.lsc = 0; + dev->data->dev_conf.intr_conf.rmv = 0; + sh->port[priv->ibv_port - 1].ih_port_id = RTE_MAX_ETHPORTS; + goto exit; + } + sh->intr_handle.fd = sh->ctx->async_fd; + sh->intr_handle.type = RTE_INTR_HANDLE_EXT; + rte_intr_callback_register(&sh->intr_handle, + mlx5_dev_interrupt_handler, sh); + sh->intr_cnt++; +exit: + pthread_mutex_unlock(&sh->intr_mutex); +} + +/** * Uninstall interrupt handler. * * @param dev @@ -1119,15 +1209,10 @@ int mlx5_fw_version_get(struct rte_eth_dev *dev, char *fw_ver, size_t fw_size) { struct mlx5_priv *priv = dev->data->dev_private; - if (dev->data->dev_conf.intr_conf.lsc || - dev->data->dev_conf.intr_conf.rmv) - rte_intr_callback_unregister(&priv->intr_handle, - mlx5_dev_interrupt_handler, dev); + mlx5_dev_shared_handler_uninstall(dev); if (priv->primary_socket) rte_intr_callback_unregister(&priv->intr_handle_socket, mlx5_dev_handler_socket, dev); - priv->intr_handle.fd = 0; - priv->intr_handle.type = RTE_INTR_HANDLE_UNKNOWN; priv->intr_handle_socket.fd = 0; priv->intr_handle_socket.type = RTE_INTR_HANDLE_UNKNOWN; } @@ -1142,28 +1227,9 @@ int mlx5_fw_version_get(struct rte_eth_dev *dev, char *fw_ver, size_t fw_size) mlx5_dev_interrupt_handler_install(struct rte_eth_dev *dev) { struct mlx5_priv *priv = dev->data->dev_private; - struct ibv_context *ctx = priv->sh->ctx; int ret; - int flags; - assert(ctx->async_fd > 0); - flags = fcntl(ctx->async_fd, F_GETFL); - ret = fcntl(ctx->async_fd, F_SETFL, flags | O_NONBLOCK); - if (ret) { - DRV_LOG(INFO, - "port %u failed to change file descriptor async event" - " queue", - dev->data->port_id); - dev->data->dev_conf.intr_conf.lsc = 0; - dev->data->dev_conf.intr_conf.rmv = 0; - } - if (dev->data->dev_conf.intr_conf.lsc || - dev->data->dev_conf.intr_conf.rmv) { - priv->intr_handle.fd = ctx->async_fd; - priv->intr_handle.type = RTE_INTR_HANDLE_EXT; - rte_intr_callback_register(&priv->intr_handle, - mlx5_dev_interrupt_handler, dev); - } + mlx5_dev_shared_handler_install(dev); ret = mlx5_socket_init(dev); if (ret) DRV_LOG(ERR, "port %u cannot initialise socket: %s", -- 1.8.3.1