From patchwork Wed Jan 28 09:50:27 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Zhou, Danny" X-Patchwork-Id: 2621 Return-Path: X-Original-To: patchwork@dpdk.org Delivered-To: patchwork@dpdk.org Received: from [92.243.14.124] (localhost [IPv6:::1]) by dpdk.org (Postfix) with ESMTP id CB2555A78; Wed, 28 Jan 2015 10:50:45 +0100 (CET) Received: from mga02.intel.com (mga02.intel.com [134.134.136.20]) by dpdk.org (Postfix) with ESMTP id 3397F1F5 for ; Wed, 28 Jan 2015 10:50:43 +0100 (CET) Received: from fmsmga002.fm.intel.com ([10.253.24.26]) by orsmga101.jf.intel.com with ESMTP; 28 Jan 2015 01:50:41 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.09,480,1418112000"; d="scan'208";a="668892545" Received: from shvmail01.sh.intel.com ([10.239.29.42]) by fmsmga002.fm.intel.com with ESMTP; 28 Jan 2015 01:50:40 -0800 Received: from shecgisg004.sh.intel.com (shecgisg004.sh.intel.com [10.239.29.89]) by shvmail01.sh.intel.com with ESMTP id t0S9ocNS011354; Wed, 28 Jan 2015 17:50:38 +0800 Received: from shecgisg004.sh.intel.com (localhost [127.0.0.1]) by shecgisg004.sh.intel.com (8.13.6/8.13.6/SuSE Linux 0.8) with ESMTP id t0S9oYsO007895; Wed, 28 Jan 2015 17:50:36 +0800 Received: (from dyzhou@localhost) by shecgisg004.sh.intel.com (8.13.6/8.13.6/Submit) id t0S9oYK6007891; Wed, 28 Jan 2015 17:50:34 +0800 From: Danny Zhou To: dev@dpdk.org Date: Wed, 28 Jan 2015 17:50:27 +0800 Message-Id: <1422438631-7853-2-git-send-email-danny.zhou@intel.com> X-Mailer: git-send-email 1.7.4.1 In-Reply-To: <1422438631-7853-1-git-send-email-danny.zhou@intel.com> References: <1422438631-7853-1-git-send-email-danny.zhou@intel.com> Subject: [dpdk-dev] [PATCH v1 1/5] ethdev: add rx interrupt enable/disable functions X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: patches and discussions about DPDK List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org Sender: "dev" Signed-off-by: Danny Zhou --- lib/librte_ether/rte_ethdev.c | 45 ++++++++++++++++++++++++++++++++++ lib/librte_ether/rte_ethdev.h | 57 +++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 102 insertions(+) diff --git a/lib/librte_ether/rte_ethdev.c b/lib/librte_ether/rte_ethdev.c index ea3a1fb..dd66cd9 100644 --- a/lib/librte_ether/rte_ethdev.c +++ b/lib/librte_ether/rte_ethdev.c @@ -2825,6 +2825,51 @@ _rte_eth_dev_callback_process(struct rte_eth_dev *dev, } rte_spinlock_unlock(&rte_eth_dev_cb_lock); } + +int +rte_eth_dev_rx_queue_intr_enable(uint8_t port_id, + uint16_t queue_id) +{ + struct rte_eth_dev *dev; + + if (port_id >= nb_ports) { + PMD_DEBUG_TRACE("Invalid port_id=%d\n", port_id); + return (-ENODEV); + } + + dev = &rte_eth_devices[port_id]; + if (dev == NULL) { + PMD_DEBUG_TRACE("Invalid port device\n"); + return (-ENODEV); + } + + FUNC_PTR_OR_ERR_RET(*dev->dev_ops->rx_queue_intr_enable, -ENOTSUP); + (*dev->dev_ops->rx_queue_intr_enable)(dev, queue_id); + return 0; +} + +int +rte_eth_dev_rx_queue_intr_disable(uint8_t port_id, + uint16_t queue_id) +{ + struct rte_eth_dev *dev; + + if (port_id >= nb_ports) { + PMD_DEBUG_TRACE("Invalid port_id=%d\n", port_id); + return (-ENODEV); + } + + dev = &rte_eth_devices[port_id]; + if (dev == NULL) { + PMD_DEBUG_TRACE("Invalid port device\n"); + return (-ENODEV); + } + + FUNC_PTR_OR_ERR_RET(*dev->dev_ops->rx_queue_intr_disable, -ENOTSUP); + (*dev->dev_ops->rx_queue_intr_disable)(dev, queue_id); + return 0; +} + #ifdef RTE_NIC_BYPASS int rte_eth_dev_bypass_init(uint8_t port_id) { diff --git a/lib/librte_ether/rte_ethdev.h b/lib/librte_ether/rte_ethdev.h index 1200c1c..c080039 100644 --- a/lib/librte_ether/rte_ethdev.h +++ b/lib/librte_ether/rte_ethdev.h @@ -848,6 +848,8 @@ struct rte_eth_fdir { struct rte_intr_conf { /** enable/disable lsc interrupt. 0 (default) - disable, 1 enable */ uint16_t lsc; + /** enable/disable rxq interrupt. 0 (default) - disable, 1 enable */ + uint16_t rxq; }; /** @@ -1108,6 +1110,14 @@ typedef int (*eth_tx_queue_setup_t)(struct rte_eth_dev *dev, const struct rte_eth_txconf *tx_conf); /**< @internal Setup a transmit queue of an Ethernet device. */ +typedef int (*eth_rx_enable_intr_t)(struct rte_eth_dev *dev, + uint16_t rx_queue_id); +/**< @internal Enable interrupt of a receive queue of an Ethernet device. */ + +typedef int (*eth_rx_disable_intr_t)(struct rte_eth_dev *dev, + uint16_t rx_queue_id); +/**< @internal Disable interrupt of a receive queue of an Ethernet device. */ + typedef void (*eth_queue_release_t)(void *queue); /**< @internal Release memory resources allocated by given RX/TX queue. */ @@ -1444,6 +1454,8 @@ struct eth_dev_ops { eth_queue_start_t tx_queue_start;/**< Start TX for a queue.*/ eth_queue_stop_t tx_queue_stop;/**< Stop TX for a queue.*/ eth_rx_queue_setup_t rx_queue_setup;/**< Set up device RX queue.*/ + eth_rx_enable_intr_t rx_queue_intr_enable; /**< Enable Rx queue interrupt. */ + eth_rx_disable_intr_t rx_queue_intr_disable; /**< Disable Rx queue interrupt.*/ eth_queue_release_t rx_queue_release;/**< Release RX queue.*/ eth_rx_queue_count_t rx_queue_count; /**< Get Rx queue count. */ eth_rx_descriptor_done_t rx_descriptor_done; /**< Check rxd DD bit */ @@ -2810,6 +2822,51 @@ void _rte_eth_dev_callback_process(struct rte_eth_dev *dev, enum rte_eth_event_type event); /** + * When there is no rx packet coming in Rx Queue for a long time, we can + * sleep lcore related to RX Queue for power saving, and enable rx interrupt + * to be triggered when rx packect arrives. + * + * The rte_eth_dev_rx_queue_intr_enable() function enables rx queue + * interrupt on specific rx queue of a port. + * + * @param port_id + * The port identifier of the Ethernet device. + * @param queue_id + * The index of the receive queue from which to retrieve input packets. + * The value must be in the range [0, nb_rx_queue - 1] previously supplied + * to rte_eth_dev_configure(). + * @return + * - (0) if successful. + * - (-ENOTSUP) if underlying hardware OR driver doesn't support + * that operation. + * - (-ENODEV) if *port_id* invalid. + */ +int rte_eth_dev_rx_queue_intr_enable(uint8_t port_id, + uint16_t queue_id); + +/** + * When lcore wakes up from rx interrupt indicating packet coming, disable rx + * interrupt and returns to polling mode. + * + * The rte_eth_dev_rx_queue_intr_disable() function disables rx queue + * interrupt on specific rx queue of a port. + * + * @param port_id + * The port identifier of the Ethernet device. + * @param queue_id + * The index of the receive queue from which to retrieve input packets. + * The value must be in the range [0, nb_rx_queue - 1] previously supplied + * to rte_eth_dev_configure(). + * @return + * - (0) if successful. + * - (-ENOTSUP) if underlying hardware OR driver doesn't support + * that operation. + * - (-ENODEV) if *port_id* invalid. + */ +int rte_eth_dev_rx_queue_intr_disable(uint8_t port_id, + uint16_t queue_id); + +/** * Turn on the LED on the Ethernet device. * This function turns on the LED on the Ethernet device. *