From 80a1deb4c77aca0ddc402c888f3c67216373f5e0 Mon Sep 17 00:00:00 2001 From: Konstantin Ananyev Date: Tue, 27 Oct 2015 12:51:43 +0000 Subject: [PATCH] ethdev: add API to retrieve queue information Add the ability for the upper layer to query RX/TX queue information. Add into rte_eth_dev_info new fields to represent information about RX/TX descriptors min/max/alig nnumbers per queue for the device. Add new structures: struct rte_eth_rxq_info struct rte_eth_txq_info new functions: rte_eth_rx_queue_info_get rte_eth_tx_queue_info_get into rte_etdev API. Left extra free space in the queue info structures, so extra fields could be added later without ABI breakage. Add new fields: rx_desc_lim tx_desc_lim into rte_eth_dev_info. Signed-off-by: Konstantin Ananyev Acked-by: Remy Horton --- doc/guides/rel_notes/release_2_2.rst | 9 +++ lib/librte_ether/rte_ethdev.c | 68 +++++++++++++++++++++ lib/librte_ether/rte_ethdev.h | 85 +++++++++++++++++++++++++- lib/librte_ether/rte_ether_version.map | 2 + 4 files changed, 162 insertions(+), 2 deletions(-) diff --git a/doc/guides/rel_notes/release_2_2.rst b/doc/guides/rel_notes/release_2_2.rst index 03d93d61f9..cf510e9a32 100644 --- a/doc/guides/rel_notes/release_2_2.rst +++ b/doc/guides/rel_notes/release_2_2.rst @@ -4,6 +4,12 @@ DPDK Release 2.2 New Features ------------ +* **Added API in ethdev to retrieve RX/TX queue information.** + + * Add the ability for the upper layer to query RX/TX queue information. + * Add into rte_eth_dev_info new fields to represent information about + RX/TX descriptors min/max/align numbers per queue for the device. + * **Added RSS dynamic configuration to bonding.** * **Added e1000 Rx interrupt support.** @@ -158,6 +164,9 @@ ABI Changes * The ethdev flow director entries for SCTP were changed. It was already done in 2.1 for CONFIG_RTE_NEXT_ABI. +* The new fields rx_desc_lim and tx_desc_lim are added into rte_eth_dev_info + structure. + * The mbuf structure was changed to support unified packet type. It was already done in 2.1 for CONFIG_RTE_NEXT_ABI. diff --git a/lib/librte_ether/rte_ethdev.c b/lib/librte_ether/rte_ethdev.c index 721cef67b3..39f65bfadb 100644 --- a/lib/librte_ether/rte_ethdev.c +++ b/lib/librte_ether/rte_ethdev.c @@ -1248,6 +1248,19 @@ rte_eth_rx_queue_setup(uint8_t port_id, uint16_t rx_queue_id, return -EINVAL; } + if (nb_rx_desc > dev_info.rx_desc_lim.nb_max || + nb_rx_desc < dev_info.rx_desc_lim.nb_min || + nb_rx_desc % dev_info.rx_desc_lim.nb_align != 0) { + + PMD_DEBUG_TRACE("Invalid value for nb_rx_desc(=%hu), " + "should be: <= %hu, = %hu, and a product of %hu\n", + nb_rx_desc, + dev_info.rx_desc_lim.nb_max, + dev_info.rx_desc_lim.nb_min, + dev_info.rx_desc_lim.nb_align); + return -EINVAL; + } + if (rx_conf == NULL) rx_conf = &dev_info.default_rxconf; @@ -1587,11 +1600,18 @@ void rte_eth_dev_info_get(uint8_t port_id, struct rte_eth_dev_info *dev_info) { struct rte_eth_dev *dev; + const struct rte_eth_desc_lim lim = { + .nb_max = UINT16_MAX, + .nb_min = 0, + .nb_align = 1, + }; VALID_PORTID_OR_RET(port_id); dev = &rte_eth_devices[port_id]; memset(dev_info, 0, sizeof(struct rte_eth_dev_info)); + dev_info->rx_desc_lim = lim; + dev_info->tx_desc_lim = lim; FUNC_PTR_OR_RET(*dev->dev_ops->dev_infos_get); (*dev->dev_ops->dev_infos_get)(dev, dev_info); @@ -3021,6 +3041,54 @@ rte_eth_remove_tx_callback(uint8_t port_id, uint16_t queue_id, return -EINVAL; } +int +rte_eth_rx_queue_info_get(uint8_t port_id, uint16_t queue_id, + struct rte_eth_rxq_info *qinfo) +{ + struct rte_eth_dev *dev; + + VALID_PORTID_OR_ERR_RET(port_id, -ENODEV); + + if (qinfo == NULL) + return -EINVAL; + + dev = &rte_eth_devices[port_id]; + if (queue_id >= dev->data->nb_rx_queues) { + PMD_DEBUG_TRACE("Invalid RX queue_id=%d\n", queue_id); + return -EINVAL; + } + + FUNC_PTR_OR_ERR_RET(*dev->dev_ops->rxq_info_get, -ENOTSUP); + + memset(qinfo, 0, sizeof(*qinfo)); + dev->dev_ops->rxq_info_get(dev, queue_id, qinfo); + return 0; +} + +int +rte_eth_tx_queue_info_get(uint8_t port_id, uint16_t queue_id, + struct rte_eth_txq_info *qinfo) +{ + struct rte_eth_dev *dev; + + VALID_PORTID_OR_ERR_RET(port_id, -ENODEV); + + if (qinfo == NULL) + return -EINVAL; + + dev = &rte_eth_devices[port_id]; + if (queue_id >= dev->data->nb_tx_queues) { + PMD_DEBUG_TRACE("Invalid TX queue_id=%d\n", queue_id); + return -EINVAL; + } + + FUNC_PTR_OR_ERR_RET(*dev->dev_ops->txq_info_get, -ENOTSUP); + + memset(qinfo, 0, sizeof(*qinfo)); + dev->dev_ops->txq_info_get(dev, queue_id, qinfo); + return 0; +} + int rte_eth_dev_set_mc_addr_list(uint8_t port_id, struct ether_addr *mc_addr_set, diff --git a/lib/librte_ether/rte_ethdev.h b/lib/librte_ether/rte_ethdev.h index 2e0518984d..c835a2f565 100644 --- a/lib/librte_ether/rte_ethdev.h +++ b/lib/librte_ether/rte_ethdev.h @@ -652,6 +652,15 @@ struct rte_eth_txconf { uint8_t tx_deferred_start; /**< Do not start queue with rte_eth_dev_start(). */ }; +/** + * A structure contains information about HW descriptor ring limitations. + */ +struct rte_eth_desc_lim { + uint16_t nb_max; /**< Max allowed number of descriptors. */ + uint16_t nb_min; /**< Min allowed number of descriptors. */ + uint16_t nb_align; /**< Number of descriptors should be aligned to. */ +}; + /** * This enum indicates the flow control mode */ @@ -837,8 +846,30 @@ struct rte_eth_dev_info { uint16_t vmdq_queue_base; /**< First queue ID for VMDQ pools. */ uint16_t vmdq_queue_num; /**< Queue number for VMDQ pools. */ uint16_t vmdq_pool_base; /**< First ID of VMDQ pools. */ + struct rte_eth_desc_lim rx_desc_lim; /**< RX descriptors limits */ + struct rte_eth_desc_lim tx_desc_lim; /**< TX descriptors limits */ }; +/** + * Ethernet device RX queue information structure. + * Used to retieve information about configured queue. + */ +struct rte_eth_rxq_info { + struct rte_mempool *mp; /**< mempool used by that queue. */ + struct rte_eth_rxconf conf; /**< queue config parameters. */ + uint8_t scattered_rx; /**< scattered packets RX supported. */ + uint16_t nb_desc; /**< configured number of RXDs. */ +} __rte_cache_aligned; + +/** + * Ethernet device TX queue information structure. + * Used to retieve information about configured queue. + */ +struct rte_eth_txq_info { + struct rte_eth_txconf conf; /**< queue config parameters. */ + uint16_t nb_desc; /**< configured number of TXDs. */ +} __rte_cache_aligned; + /** Maximum name length for extended statistics counters */ #define RTE_ETH_XSTATS_NAME_SIZE 64 @@ -997,6 +1028,12 @@ typedef uint32_t (*eth_rx_queue_count_t)(struct rte_eth_dev *dev, typedef int (*eth_rx_descriptor_done_t)(void *rxq, uint16_t offset); /**< @internal Check DD bit of specific RX descriptor */ +typedef void (*eth_rxq_info_get_t)(struct rte_eth_dev *dev, + uint16_t rx_queue_id, struct rte_eth_rxq_info *qinfo); + +typedef void (*eth_txq_info_get_t)(struct rte_eth_dev *dev, + uint16_t tx_queue_id, struct rte_eth_txq_info *qinfo); + typedef int (*mtu_set_t)(struct rte_eth_dev *dev, uint16_t mtu); /**< @internal Set MTU. */ @@ -1337,9 +1374,13 @@ struct eth_dev_ops { rss_hash_update_t rss_hash_update; /** Get current RSS hash configuration. */ rss_hash_conf_get_t rss_hash_conf_get; - eth_filter_ctrl_t filter_ctrl; /**< common filter control*/ + eth_filter_ctrl_t filter_ctrl; + /**< common filter control. */ eth_set_mc_addr_list_t set_mc_addr_list; /**< set list of mcast addrs */ - + eth_rxq_info_get_t rxq_info_get; + /**< retrieve RX queue information. */ + eth_txq_info_get_t txq_info_get; + /**< retrieve TX queue information. */ /** Turn IEEE1588/802.1AS timestamping on. */ eth_timesync_enable_t timesync_enable; /** Turn IEEE1588/802.1AS timestamping off. */ @@ -3495,6 +3536,46 @@ int rte_eth_remove_tx_callback(uint8_t port_id, uint16_t queue_id, struct rte_eth_rxtx_callback *user_cb); /** + * Retrieve information about given port's RX queue. + * + * @param port_id + * The port identifier of the Ethernet device. + * @param queue_id + * The RX queue on the Ethernet device for which information + * will be retrieved. + * @param qinfo + * A pointer to a structure of type *rte_eth_rxq_info_info* to be filled with + * the information of the Ethernet device. + * + * @return + * - 0: Success + * - -ENOTSUP: routine is not supported by the device PMD. + * - -EINVAL: The port_id or the queue_id is out of range. + */ +int rte_eth_rx_queue_info_get(uint8_t port_id, uint16_t queue_id, + struct rte_eth_rxq_info *qinfo); + +/** + * Retrieve information about given port's TX queue. + * + * @param port_id + * The port identifier of the Ethernet device. + * @param queue_id + * The TX queue on the Ethernet device for which information + * will be retrieved. + * @param qinfo + * A pointer to a structure of type *rte_eth_txq_info_info* to be filled with + * the information of the Ethernet device. + * + * @return + * - 0: Success + * - -ENOTSUP: routine is not supported by the device PMD. + * - -EINVAL: The port_id or the queue_id is out of range. + */ +int rte_eth_tx_queue_info_get(uint8_t port_id, uint16_t queue_id, + struct rte_eth_txq_info *qinfo); + +/* * Retrieve number of available registers for access * * @param port_id diff --git a/lib/librte_ether/rte_ether_version.map b/lib/librte_ether/rte_ether_version.map index 3c4dc2db5f..7b04e95491 100644 --- a/lib/librte_ether/rte_ether_version.map +++ b/lib/librte_ether/rte_ether_version.map @@ -132,5 +132,7 @@ DPDK_2.2 { global: rte_eth_dev_get_dcb_info; + rte_eth_rx_queue_info_get; + rte_eth_tx_queue_info_get; } DPDK_2.1; -- 2.20.1