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This patch implements the function. This API is used to query the device about the count of queues it has been configured with. Fixes: c88b3f2558ed ("rawdev: introduce raw device library") Cc: shreyansh.jain@nxp.com Signed-off-by: Shreyansh Jain Suggested-by: Keith Wiles --- lib/librte_rawdev/rte_rawdev.c | 12 ++++++++++++ lib/librte_rawdev/rte_rawdev.h | 1 + lib/librte_rawdev/rte_rawdev_pmd.h | 20 ++++++++++++++++++++ lib/librte_rawdev/rte_rawdev_version.map | 1 + 4 files changed, 34 insertions(+) diff --git a/lib/librte_rawdev/rte_rawdev.c b/lib/librte_rawdev/rte_rawdev.c index 7378bfede..62b6b97ef 100644 --- a/lib/librte_rawdev/rte_rawdev.c +++ b/lib/librte_rawdev/rte_rawdev.c @@ -172,6 +172,18 @@ rte_rawdev_queue_release(uint16_t dev_id, uint16_t queue_id) return (*dev->dev_ops->queue_release)(dev, queue_id); } +uint16_t +rte_rawdev_queue_count(uint16_t dev_id) +{ + struct rte_rawdev *dev; + + RTE_RAWDEV_VALID_DEVID_OR_ERR_RET(dev_id, -EINVAL); + dev = &rte_rawdevs[dev_id]; + + RTE_FUNC_PTR_OR_ERR_RET(*dev->dev_ops->queue_count, -ENOTSUP); + return (*dev->dev_ops->queue_count)(dev); +} + int rte_rawdev_get_attr(uint16_t dev_id, const char *attr_name, diff --git a/lib/librte_rawdev/rte_rawdev.h b/lib/librte_rawdev/rte_rawdev.h index 7988e76af..684bfdb81 100644 --- a/lib/librte_rawdev/rte_rawdev.h +++ b/lib/librte_rawdev/rte_rawdev.h @@ -182,6 +182,7 @@ rte_rawdev_queue_setup(uint16_t dev_id, */ int rte_rawdev_queue_release(uint16_t dev_id, uint16_t queue_id); + /** * Get the number of raw queues on a specific raw device * diff --git a/lib/librte_rawdev/rte_rawdev_pmd.h b/lib/librte_rawdev/rte_rawdev_pmd.h index 6d6cf14a1..bb9bbc350 100644 --- a/lib/librte_rawdev/rte_rawdev_pmd.h +++ b/lib/librte_rawdev/rte_rawdev_pmd.h @@ -250,6 +250,24 @@ typedef int (*rawdev_queue_setup_t)(struct rte_rawdev *dev, typedef int (*rawdev_queue_release_t)(struct rte_rawdev *dev, uint16_t queue_id); +/** + * Get the count of number of queues configured on this device. + * + * Another way to fetch this information is to fetch the device configuration. + * But, that assumes that the device configuration managed by the driver has + * that kind of information. + * + * This function helps in getting queue count supported, independently. It + * can help in cases where iterator needs to be implemented. + * + * @param + * Raw device pointer + * @return + * Number of queues; 0 is assumed to be a valid response. + * + */ +typedef uint16_t (*rawdev_queue_count_t)(struct rte_rawdev *dev); + /** * Enqueue an array of raw buffers to the device. * @@ -506,6 +524,8 @@ struct rte_rawdev_ops { rawdev_queue_setup_t queue_setup; /**< Release an raw queue. */ rawdev_queue_release_t queue_release; + /**< Get the number of queues attached to the device */ + rawdev_queue_count_t queue_count; /**< Enqueue an array of raw buffers to device. */ rawdev_enqueue_bufs_t enqueue_bufs; diff --git a/lib/librte_rawdev/rte_rawdev_version.map b/lib/librte_rawdev/rte_rawdev_version.map index f5be52df9..b61dbff11 100644 --- a/lib/librte_rawdev/rte_rawdev_version.map +++ b/lib/librte_rawdev/rte_rawdev_version.map @@ -16,6 +16,7 @@ DPDK_18.08 { rte_rawdev_pmd_allocate; rte_rawdev_pmd_release; rte_rawdev_queue_conf_get; + rte_rawdev_queue_count; rte_rawdev_queue_setup; rte_rawdev_queue_release; rte_rawdev_reset;