From a201b45fb878faf3b6f73a84a4454fe199012760 Mon Sep 17 00:00:00 2001 From: Cunming Liang Date: Mon, 20 Jul 2015 11:02:26 +0800 Subject: [PATCH] ethdev: add Rx interrupt control functions The patch adds two dev_ops functions to enable and disable rx queue interrupts. In addition, it adds rte_eth_dev_rx_intr_ctl/rx_intr_q to support per port or per queue rx intr event set. Signed-off-by: Danny Zhou Signed-off-by: Cunming Liang --- lib/librte_ether/rte_ethdev.c | 147 +++++++++++++++++++++++++ lib/librte_ether/rte_ethdev.h | 104 +++++++++++++++++ lib/librte_ether/rte_ether_version.map | 4 + 3 files changed, 255 insertions(+) diff --git a/lib/librte_ether/rte_ethdev.c b/lib/librte_ether/rte_ethdev.c index 8751801c30..5fe19061d2 100644 --- a/lib/librte_ether/rte_ethdev.c +++ b/lib/librte_ether/rte_ethdev.c @@ -3032,6 +3032,153 @@ _rte_eth_dev_callback_process(struct rte_eth_dev *dev, } rte_spinlock_unlock(&rte_eth_dev_cb_lock); } + +#ifdef RTE_NEXT_ABI +int +rte_eth_dev_rx_intr_ctl(uint8_t port_id, int epfd, int op, void *data) +{ + uint32_t vec; + struct rte_eth_dev *dev; + struct rte_intr_handle *intr_handle; + uint16_t qid; + int rc; + + if (!rte_eth_dev_is_valid_port(port_id)) { + PMD_DEBUG_TRACE("Invalid port_id=%u\n", port_id); + return -ENODEV; + } + + dev = &rte_eth_devices[port_id]; + intr_handle = &dev->pci_dev->intr_handle; + if (!intr_handle->intr_vec) { + PMD_DEBUG_TRACE("RX Intr vector unset\n"); + return -EPERM; + } + + for (qid = 0; qid < dev->data->nb_rx_queues; qid++) { + vec = intr_handle->intr_vec[qid]; + rc = rte_intr_rx_ctl(intr_handle, epfd, op, vec, data); + if (rc && rc != -EEXIST) { + PMD_DEBUG_TRACE("p %u q %u rx ctl error" + " op %d epfd %d vec %u\n", + port_id, qid, op, epfd, vec); + } + } + + return 0; +} + +int +rte_eth_dev_rx_intr_ctl_q(uint8_t port_id, uint16_t queue_id, + int epfd, int op, void *data) +{ + uint32_t vec; + struct rte_eth_dev *dev; + struct rte_intr_handle *intr_handle; + int rc; + + if (!rte_eth_dev_is_valid_port(port_id)) { + PMD_DEBUG_TRACE("Invalid port_id=%u\n", port_id); + return -ENODEV; + } + + dev = &rte_eth_devices[port_id]; + if (queue_id >= dev->data->nb_rx_queues) { + PMD_DEBUG_TRACE("Invalid RX queue_id=%u\n", queue_id); + return -EINVAL; + } + + intr_handle = &dev->pci_dev->intr_handle; + if (!intr_handle->intr_vec) { + PMD_DEBUG_TRACE("RX Intr vector unset\n"); + return -EPERM; + } + + vec = intr_handle->intr_vec[queue_id]; + rc = rte_intr_rx_ctl(intr_handle, epfd, op, vec, data); + if (rc && rc != -EEXIST) { + PMD_DEBUG_TRACE("p %u q %u rx ctl error" + " op %d epfd %d vec %u\n", + port_id, queue_id, op, epfd, vec); + return rc; + } + + return 0; +} + +int +rte_eth_dev_rx_intr_enable(uint8_t port_id, + uint16_t queue_id) +{ + struct rte_eth_dev *dev; + + if (!rte_eth_dev_is_valid_port(port_id)) { + PMD_DEBUG_TRACE("Invalid port_id=%d\n", port_id); + return -ENODEV; + } + + dev = &rte_eth_devices[port_id]; + + FUNC_PTR_OR_ERR_RET(*dev->dev_ops->rx_queue_intr_enable, -ENOTSUP); + return (*dev->dev_ops->rx_queue_intr_enable)(dev, queue_id); +} + +int +rte_eth_dev_rx_intr_disable(uint8_t port_id, + uint16_t queue_id) +{ + struct rte_eth_dev *dev; + + if (!rte_eth_dev_is_valid_port(port_id)) { + PMD_DEBUG_TRACE("Invalid port_id=%d\n", port_id); + return -ENODEV; + } + + dev = &rte_eth_devices[port_id]; + + FUNC_PTR_OR_ERR_RET(*dev->dev_ops->rx_queue_intr_disable, -ENOTSUP); + return (*dev->dev_ops->rx_queue_intr_disable)(dev, queue_id); +} +#else +int +rte_eth_dev_rx_intr_enable(uint8_t port_id, uint16_t queue_id) +{ + RTE_SET_USED(port_id); + RTE_SET_USED(queue_id); + return -ENOTSUP; +} + +int +rte_eth_dev_rx_intr_disable(uint8_t port_id, uint16_t queue_id) +{ + RTE_SET_USED(port_id); + RTE_SET_USED(queue_id); + return -ENOTSUP; +} + +int +rte_eth_dev_rx_intr_ctl(uint8_t port_id, int epfd, int op, void *data) +{ + RTE_SET_USED(port_id); + RTE_SET_USED(epfd); + RTE_SET_USED(op); + RTE_SET_USED(data); + return -1; +} + +int +rte_eth_dev_rx_intr_ctl_q(uint8_t port_id, uint16_t queue_id, + int epfd, int op, void *data) +{ + RTE_SET_USED(port_id); + RTE_SET_USED(queue_id); + RTE_SET_USED(epfd); + RTE_SET_USED(op); + RTE_SET_USED(data); + return -1; +} +#endif + #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 62c166e0d2..f1e622b110 100644 --- a/lib/librte_ether/rte_ethdev.h +++ b/lib/librte_ether/rte_ethdev.h @@ -845,6 +845,10 @@ struct rte_eth_fdir { struct rte_intr_conf { /** enable/disable lsc interrupt. 0 (default) - disable, 1 enable */ uint16_t lsc; +#ifdef RTE_NEXT_ABI + /** enable/disable rxq interrupt. 0 (default) - disable, 1 enable */ + uint16_t rxq; +#endif }; /** @@ -1053,6 +1057,14 @@ 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. */ @@ -1380,6 +1392,12 @@ struct eth_dev_ops { 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 */ +#ifdef RTE_NEXT_ABI + /**< Enable Rx queue interrupt. */ + eth_rx_enable_intr_t rx_queue_intr_enable; + /**< Disable Rx queue interrupt.*/ + eth_rx_disable_intr_t rx_queue_intr_disable; +#endif eth_tx_queue_setup_t tx_queue_setup;/**< Set up device TX queue.*/ eth_queue_release_t tx_queue_release;/**< Release TX queue.*/ eth_dev_led_on_t dev_led_on; /**< Turn on LED. */ @@ -2956,6 +2974,92 @@ int rte_eth_dev_callback_unregister(uint8_t port_id, 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_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_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_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_intr_disable(uint8_t port_id, uint16_t queue_id); + +/** + * RX Interrupt control per port. + * + * @param port_id + * The port identifier of the Ethernet device. + * @param epfd + * Epoll instance fd which the intr vector associated to. + * Using RTE_EPOLL_PER_THREAD allows to use per thread epoll instance. + * @param op + * The operation be performed for the vector. + * Operation type of {RTE_INTR_EVENT_ADD, RTE_INTR_EVENT_DEL}. + * @param data + * User raw data. + * @return + * - On success, zero. + * - On failure, a negative value. + */ +int rte_eth_dev_rx_intr_ctl(uint8_t port_id, int epfd, int op, void *data); + +/** + * RX Interrupt control per queue. + * + * @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(). + * @param epfd + * Epoll instance fd which the intr vector associated to. + * Using RTE_EPOLL_PER_THREAD allows to use per thread epoll instance. + * @param op + * The operation be performed for the vector. + * Operation type of {RTE_INTR_EVENT_ADD, RTE_INTR_EVENT_DEL}. + * @param data + * User raw data. + * @return + * - On success, zero. + * - On failure, a negative value. + */ +int rte_eth_dev_rx_intr_ctl_q(uint8_t port_id, uint16_t queue_id, + int epfd, int op, void *data); + /** * Turn on the LED on the Ethernet device. * This function turns on the LED on the Ethernet device. diff --git a/lib/librte_ether/rte_ether_version.map b/lib/librte_ether/rte_ether_version.map index 23cfee9b91..8345a6c3e1 100644 --- a/lib/librte_ether/rte_ether_version.map +++ b/lib/librte_ether/rte_ether_version.map @@ -115,6 +115,10 @@ DPDK_2.1 { rte_eth_dev_get_reg_info; rte_eth_dev_get_reg_length; rte_eth_dev_is_valid_port; + rte_eth_dev_rx_intr_ctl; + rte_eth_dev_rx_intr_ctl_q; + rte_eth_dev_rx_intr_disable; + rte_eth_dev_rx_intr_enable; rte_eth_dev_set_eeprom; rte_eth_dev_set_mc_addr_list; rte_eth_timesync_disable; -- 2.20.1