From patchwork Wed Feb 21 10:32:15 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Bruce Richardson X-Patchwork-Id: 136962 X-Patchwork-Delegate: jerinj@marvell.com Return-Path: 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]) by inbox.dpdk.org (Postfix) with ESMTP id C5D4343B61; Wed, 21 Feb 2024 11:33:08 +0100 (CET) Received: from mails.dpdk.org (localhost [127.0.0.1]) by mails.dpdk.org (Postfix) with ESMTP id E377540A84; Wed, 21 Feb 2024 11:32:40 +0100 (CET) Received: from mgamail.intel.com (mgamail.intel.com [192.198.163.15]) by mails.dpdk.org (Postfix) with ESMTP id 112C140DF8 for ; Wed, 21 Feb 2024 11:32:37 +0100 (CET) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1708511558; x=1740047558; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=E5lgokCpFZxGM6/+sYC4TOAG9S+EOmghoIYbmy37+tY=; b=hyVn8H2RqwIp9G9tIGeqIIM1UC0Ktb5yrHyG5M4Ob787iKsqfPYNZKRj yNtD3zBx7AhclWgx52va8J/w6Wd3XsxVlDVh3QVQ3LBbVkLmkUjjuIlQa sW4Lr7zJPT8WYgPQ8Xag5h/KVMt4BhElpVd5P8ZQWdC1bKA7pF9fZR5dI vwRfX16VxpwvfV4C6Rjx0yciyPBlrxpwxgEGt1e83Yz0ByS32Vl/d3j63 GaeMoC8OJ2yavit+NMd+mZ/OrAfgQmmH0m2CDJWxyHgyxSLUtuvqGsVCz hu5zUKrMEu++t/B6lT+/WVexLt1mtmYTpISw8GuPKssnOPaBSLZFcYGuN g==; X-IronPort-AV: E=McAfee;i="6600,9927,10990"; a="2800726" X-IronPort-AV: E=Sophos;i="6.06,175,1705392000"; d="scan'208";a="2800726" Received: from orviesa007.jf.intel.com ([10.64.159.147]) by fmvoesa109.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 21 Feb 2024 02:32:38 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.06,175,1705392000"; d="scan'208";a="5393013" Received: from silpixa00401385.ir.intel.com ([10.237.214.38]) by orviesa007.jf.intel.com with ESMTP; 21 Feb 2024 02:32:36 -0800 From: Bruce Richardson To: dev@dpdk.org, jerinj@marvell.com, mattias.ronnblom@ericsson.com Cc: Bruce Richardson Subject: [PATCH v4 06/12] eventdev: improve doxygen comments on configure struct Date: Wed, 21 Feb 2024 10:32:15 +0000 Message-Id: <20240221103221.933238-7-bruce.richardson@intel.com> X-Mailer: git-send-email 2.40.1 In-Reply-To: <20240221103221.933238-1-bruce.richardson@intel.com> References: <20240119174346.108905-1-bruce.richardson@intel.com> <20240221103221.933238-1-bruce.richardson@intel.com> MIME-Version: 1.0 X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org General rewording and cleanup on the rte_event_dev_config structure. Improved the wording of some sentences and created linked cross-references out of the existing references to the dev_info structure. As part of the rework, fix issue with how single-link port-queue pairs were counted in the rte_event_dev_config structure. This did not match the actual implementation and, if following the documentation, certain valid port/queue configurations would have been impossible to configure. Fix this by changing the documentation to match the implementation Bugzilla ID: 1368 Fixes: 75d113136f38 ("eventdev: express DLB/DLB2 PMD constraints") Signed-off-by: Bruce Richardson Acked-by: Pavan Nikhilesh --- V3: - minor tweaks following review - merged in doc fix for bugzilla 1368 into this patch, since it fit with other clarifications to the config struct. --- lib/eventdev/rte_eventdev.h | 61 ++++++++++++++++++++++--------------- 1 file changed, 37 insertions(+), 24 deletions(-) diff --git a/lib/eventdev/rte_eventdev.h b/lib/eventdev/rte_eventdev.h index 9d286168b1..73cc6b6688 100644 --- a/lib/eventdev/rte_eventdev.h +++ b/lib/eventdev/rte_eventdev.h @@ -684,9 +684,9 @@ rte_event_dev_attr_get(uint8_t dev_id, uint32_t attr_id, struct rte_event_dev_config { uint32_t dequeue_timeout_ns; /**< rte_event_dequeue_burst() timeout on this device. - * This value should be in the range of *min_dequeue_timeout_ns* and - * *max_dequeue_timeout_ns* which previously provided in - * rte_event_dev_info_get() + * This value should be in the range of @ref rte_event_dev_info.min_dequeue_timeout_ns and + * @ref rte_event_dev_info.max_dequeue_timeout_ns returned by + * @ref rte_event_dev_info_get() * The value 0 is allowed, in which case, default dequeue timeout used. * @see RTE_EVENT_DEV_CFG_PER_DEQUEUE_TIMEOUT */ @@ -694,40 +694,53 @@ struct rte_event_dev_config { /**< In a *closed system* this field is the limit on maximum number of * events that can be inflight in the eventdev at a given time. The * limit is required to ensure that the finite space in a closed system - * is not overwhelmed. The value cannot exceed the *max_num_events* - * as provided by rte_event_dev_info_get(). - * This value should be set to -1 for *open system*. + * is not exhausted. + * The value cannot exceed @ref rte_event_dev_info.max_num_events + * returned by rte_event_dev_info_get(). + * + * This value should be set to -1 for *open systems*, that is, + * those systems returning -1 in @ref rte_event_dev_info.max_num_events. + * + * @see rte_event_port_conf.new_event_threshold */ uint8_t nb_event_queues; /**< Number of event queues to configure on this device. - * This value cannot exceed the *max_event_queues* which previously - * provided in rte_event_dev_info_get() + * This value *includes* any single-link queue-port pairs to be used. + * This value cannot exceed @ref rte_event_dev_info.max_event_queues + + * @ref rte_event_dev_info.max_single_link_event_port_queue_pairs + * returned by rte_event_dev_info_get(). + * The number of non-single-link queues i.e. this value less + * *nb_single_link_event_port_queues* in this struct, cannot exceed + * @ref rte_event_dev_info.max_event_queues */ uint8_t nb_event_ports; /**< Number of event ports to configure on this device. - * This value cannot exceed the *max_event_ports* which previously - * provided in rte_event_dev_info_get() + * This value *includes* any single-link queue-port pairs to be used. + * This value cannot exceed @ref rte_event_dev_info.max_event_ports + + * @ref rte_event_dev_info.max_single_link_event_port_queue_pairs + * returned by rte_event_dev_info_get(). + * The number of non-single-link ports i.e. this value less + * *nb_single_link_event_port_queues* in this struct, cannot exceed + * @ref rte_event_dev_info.max_event_ports */ uint32_t nb_event_queue_flows; - /**< Number of flows for any event queue on this device. - * This value cannot exceed the *max_event_queue_flows* which previously - * provided in rte_event_dev_info_get() + /**< Max number of flows needed for a single event queue on this device. + * This value cannot exceed @ref rte_event_dev_info.max_event_queue_flows + * returned by rte_event_dev_info_get() */ uint32_t nb_event_port_dequeue_depth; - /**< Maximum number of events can be dequeued at a time from an - * event port by this device. - * This value cannot exceed the *max_event_port_dequeue_depth* - * which previously provided in rte_event_dev_info_get(). + /**< Max number of events that can be dequeued at a time from an event port on this device. + * This value cannot exceed @ref rte_event_dev_info.max_event_port_dequeue_depth + * returned by rte_event_dev_info_get(). * Ignored when device is not RTE_EVENT_DEV_CAP_BURST_MODE capable. - * @see rte_event_port_setup() + * @see rte_event_port_setup() rte_event_dequeue_burst() */ uint32_t nb_event_port_enqueue_depth; - /**< Maximum number of events can be enqueued at a time from an - * event port by this device. - * This value cannot exceed the *max_event_port_enqueue_depth* - * which previously provided in rte_event_dev_info_get(). + /**< Maximum number of events can be enqueued at a time to an event port on this device. + * This value cannot exceed @ref rte_event_dev_info.max_event_port_enqueue_depth + * returned by rte_event_dev_info_get(). * Ignored when device is not RTE_EVENT_DEV_CAP_BURST_MODE capable. - * @see rte_event_port_setup() + * @see rte_event_port_setup() rte_event_enqueue_burst() */ uint32_t event_dev_cfg; /**< Event device config flags(RTE_EVENT_DEV_CFG_)*/ @@ -737,7 +750,7 @@ struct rte_event_dev_config { * queues; this value cannot exceed *nb_event_ports* or * *nb_event_queues*. If the device has ports and queues that are * optimized for single-link usage, this field is a hint for how many - * to allocate; otherwise, regular event ports and queues can be used. + * to allocate; otherwise, regular event ports and queues will be used. */ };