From mboxrd@z Thu Jan 1 00:00:00 1970 From: Qi Zhang Subject: [PATCH v2 1/4] ether: support deferred queue setup Date: Fri, 2 Mar 2018 12:13:03 +0800 Message-ID: <20180302041306.90324-2-qi.z.zhang@intel.com> References: <20180212045314.171616-1-qi.z.zhang@intel.com> <20180302041306.90324-1-qi.z.zhang@intel.com> Cc: dev@dpdk.org, beilei.xing@intel.com, jingjing.wu@intel.com, wenzhuo.lu@intel.com, Qi Zhang To: thomas@monjalon.net Return-path: Received: from mga04.intel.com (mga04.intel.com [192.55.52.120]) by dpdk.org (Postfix) with ESMTP id 1A63E4C7F for ; Fri, 2 Mar 2018 05:13:10 +0100 (CET) In-Reply-To: <20180302041306.90324-1-qi.z.zhang@intel.com> List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org Sender: "dev" The patch let etherdev driver expose the capability flag through rte_eth_dev_info_get when it support deferred queue configuraiton, then base on the flag rte_eth_[rx|tx]_queue_setup could decide continue to setup the queue or just return fail when device already started. Signed-off-by: Qi Zhang --- doc/guides/nics/features.rst | 8 ++++++++ lib/librte_ether/rte_ethdev.c | 30 ++++++++++++++++++------------ lib/librte_ether/rte_ethdev.h | 11 +++++++++++ 3 files changed, 37 insertions(+), 12 deletions(-) diff --git a/doc/guides/nics/features.rst b/doc/guides/nics/features.rst index 1b4fb979f..36ad21a1f 100644 --- a/doc/guides/nics/features.rst +++ b/doc/guides/nics/features.rst @@ -892,7 +892,15 @@ Documentation describes performance values. See ``dpdk.org/doc/perf/*``. +.. _nic_features_queue_deferred_setup_capabilities: +Queue deferred setup capabilities +--------------------------------- + +Supports queue setup / release after device started. + +* **[provides] rte_eth_dev_info**: ``deferred_queue_config_capa:DEV_DEFERRED_RX_QUEUE_SETUP,DEV_DEFERRED_TX_QUEUE_SETUP,DEV_DEFERRED_RX_QUEUE_RELEASE,DEV_DEFERRED_TX_QUEUE_RELEASE``. +* **[related] API**: ``rte_eth_dev_info_get()``. .. _nic_features_other: diff --git a/lib/librte_ether/rte_ethdev.c b/lib/librte_ether/rte_ethdev.c index a6ce2a5ba..6c906c4df 100644 --- a/lib/librte_ether/rte_ethdev.c +++ b/lib/librte_ether/rte_ethdev.c @@ -1425,12 +1425,6 @@ rte_eth_rx_queue_setup(uint16_t port_id, uint16_t rx_queue_id, return -EINVAL; } - if (dev->data->dev_started) { - RTE_PMD_DEBUG_TRACE( - "port %d must be stopped to allow configuration\n", port_id); - return -EBUSY; - } - RTE_FUNC_PTR_OR_ERR_RET(*dev->dev_ops->dev_infos_get, -ENOTSUP); RTE_FUNC_PTR_OR_ERR_RET(*dev->dev_ops->rx_queue_setup, -ENOTSUP); @@ -1474,10 +1468,19 @@ rte_eth_rx_queue_setup(uint16_t port_id, uint16_t rx_queue_id, return -EINVAL; } + if (dev->data->dev_started && + !(dev_info.deferred_queue_config_capa & + DEV_DEFERRED_RX_QUEUE_SETUP)) + return -EINVAL; + rxq = dev->data->rx_queues; if (rxq[rx_queue_id]) { RTE_FUNC_PTR_OR_ERR_RET(*dev->dev_ops->rx_queue_release, -ENOTSUP); + if (dev->data->dev_started && + !(dev_info.deferred_queue_config_capa & + DEV_DEFERRED_RX_QUEUE_RELEASE)) + return -EINVAL; (*dev->dev_ops->rx_queue_release)(rxq[rx_queue_id]); rxq[rx_queue_id] = NULL; } @@ -1573,12 +1576,6 @@ rte_eth_tx_queue_setup(uint16_t port_id, uint16_t tx_queue_id, return -EINVAL; } - if (dev->data->dev_started) { - RTE_PMD_DEBUG_TRACE( - "port %d must be stopped to allow configuration\n", port_id); - return -EBUSY; - } - RTE_FUNC_PTR_OR_ERR_RET(*dev->dev_ops->dev_infos_get, -ENOTSUP); RTE_FUNC_PTR_OR_ERR_RET(*dev->dev_ops->tx_queue_setup, -ENOTSUP); @@ -1596,10 +1593,19 @@ rte_eth_tx_queue_setup(uint16_t port_id, uint16_t tx_queue_id, return -EINVAL; } + if (dev->data->dev_started && + !(dev_info.deferred_queue_config_capa & + DEV_DEFERRED_TX_QUEUE_SETUP)) + return -EINVAL; + txq = dev->data->tx_queues; if (txq[tx_queue_id]) { RTE_FUNC_PTR_OR_ERR_RET(*dev->dev_ops->tx_queue_release, -ENOTSUP); + if (dev->data->dev_started && + !(dev_info.deferred_queue_config_capa & + DEV_DEFERRED_TX_QUEUE_RELEASE)) + return -EINVAL; (*dev->dev_ops->tx_queue_release)(txq[tx_queue_id]); txq[tx_queue_id] = NULL; } diff --git a/lib/librte_ether/rte_ethdev.h b/lib/librte_ether/rte_ethdev.h index 036153306..410e58c50 100644 --- a/lib/librte_ether/rte_ethdev.h +++ b/lib/librte_ether/rte_ethdev.h @@ -981,6 +981,15 @@ struct rte_eth_conf { */ #define DEV_TX_OFFLOAD_SECURITY 0x00020000 +#define DEV_DEFERRED_RX_QUEUE_SETUP 0x00000001 +/**< Deferred setup rx queue */ +#define DEV_DEFERRED_TX_QUEUE_SETUP 0x00000002 +/**< Deferred setup tx queue */ +#define DEV_DEFERRED_RX_QUEUE_RELEASE 0x00000004 +/**< Deferred release rx queue */ +#define DEV_DEFERRED_TX_QUEUE_RELEASE 0x00000008 +/**< Deferred release tx queue */ + /* * If new Tx offload capabilities are defined, they also must be * mentioned in rte_tx_offload_names in rte_ethdev.c file. @@ -1029,6 +1038,8 @@ struct rte_eth_dev_info { /** Configured number of rx/tx queues */ uint16_t nb_rx_queues; /**< Number of RX queues. */ uint16_t nb_tx_queues; /**< Number of TX queues. */ + uint64_t deferred_queue_config_capa; + /**< queues can be setup/release after dev_start (DEV_DEFERRED_). */ }; /** -- 2.13.6