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

[Arek Kusztal]

From: Fiona Trahe <fiona.tr...@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.tr...@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