[dpdk-dev] [PATCH v2] cryptodev: add function to check if qp was setup

[Arek Kusztal]

From: Fiona Trahe <fiona.trahe at intel.com>

This patch adds function that can check if queue pair
was already setup. This may be useful when dealing with
multi process approach in cryptodev.

Signed-off-by: Fiona Trahe <fiona.trahe at intel.com>
---
v2:
- changed return values
- added function to map file

 lib/librte_cryptodev/rte_cryptodev.c           | 29 ++++++++++++++++++++++++++
 lib/librte_cryptodev/rte_cryptodev.h           | 17 +++++++++++++++
 lib/librte_cryptodev/rte_cryptodev_version.map |  3 +++
 3 files changed, 49 insertions(+)

diff --git a/lib/librte_cryptodev/rte_cryptodev.c b/lib/librte_cryptodev/rte_cryptodev.c
index e37b83a..6f556c3 100644
--- a/lib/librte_cryptodev/rte_cryptodev.c
+++ b/lib/librte_cryptodev/rte_cryptodev.c
@@ -1080,6 +1080,35 @@ rte_cryptodev_close(uint8_t dev_id)
 }
 
 int
+rte_cryptodev_get_qp_status(uint8_t dev_id, uint16_t queue_pair_id)
+{
+	struct rte_cryptodev *dev;
+
+	if (!rte_cryptodev_pmd_is_valid_dev(dev_id)) {
+		CDEV_LOG_ERR("Invalid dev_id=%" PRIu8, dev_id);
+		return -EINVAL;
+	}
+
+	dev = &rte_crypto_devices[dev_id];
+	if (queue_pair_id >= dev->data->nb_queue_pairs) {
+		CDEV_LOG_ERR("Invalid queue_pair_id=%d", queue_pair_id);
+		return -EINVAL;
+	}
+	void **qps = dev->data->queue_pairs;
+
+	if (qps[queue_pair_id])	{
+		CDEV_LOG_DEBUG("qp %d on dev %d is initialised",
+			queue_pair_id, dev_id);
+		return 1;
+	}
+
+	CDEV_LOG_DEBUG("qp %d on dev %d is not initialised",
+		queue_pair_id, dev_id);
+
+	return 0;
+}
+
+int
 rte_cryptodev_queue_pair_setup(uint8_t dev_id, uint16_t queue_pair_id,
 		const struct rte_cryptodev_qp_conf *qp_conf, int socket_id)
 
diff --git a/lib/librte_cryptodev/rte_cryptodev.h b/lib/librte_cryptodev/rte_cryptodev.h
index 4aaee73..7b3ebc2 100644
--- a/lib/librte_cryptodev/rte_cryptodev.h
+++ b/lib/librte_cryptodev/rte_cryptodev.h
@@ -727,6 +727,23 @@ rte_cryptodev_queue_pair_setup(uint8_t dev_id, uint16_t queue_pair_id,
 		const struct rte_cryptodev_qp_conf *qp_conf, int socket_id);
 
 /**
+ * Get the status of queue pairs setup on a specific crypto device
+ *
+ * @param	dev_id		Crypto device identifier.
+ * @param	queue_pair_id	The index of the queue pairs to set up. The
+ *				value must be in the range [0, nb_queue_pair
+ *				- 1] previously supplied to
+ *				rte_cryptodev_configure().
+ * @return
+ *   - 0: qp was not configured
+ *	 - 1: qp was configured
+ *	 - -EINVAL: device was not configured
+ */
+__rte_experimental
+int
+rte_cryptodev_get_qp_status(uint8_t dev_id, uint16_t queue_pair_id);
+
+/**
  * Get the number of queue pairs on a specific crypto device
  *
  * @param	dev_id		Crypto device identifier.
diff --git a/lib/librte_cryptodev/rte_cryptodev_version.map b/lib/librte_cryptodev/rte_cryptodev_version.map
index 07a2d2f..a7a78dc 100644
--- a/lib/librte_cryptodev/rte_cryptodev_version.map
+++ b/lib/librte_cryptodev/rte_cryptodev_version.map
@@ -103,4 +103,7 @@ EXPERIMENTAL {
 	__rte_cryptodev_trace_asym_session_clear;
 	__rte_cryptodev_trace_dequeue_burst;
 	__rte_cryptodev_trace_enqueue_burst;
+
+	# added in 20.08
+	rte_cryptodev_get_qp_status;
 };
-- 
2.1.0