[PATCH 1/2] cryptodev: add queue pair priority

[Akhil Goyal <gakhil@marvell.com>]

Added a new field priority in `rte_cryptodev_qp_conf`,
to set the queue pair priority while setting up.
The priorities can be set between
`RTE_CRYPTODEV_QP_PRIORITY_HIGHEST` and
`RTE_CRYPTODEV_QP_PRIORITY_LOWEST`.
The underlying implementation may normalize the value
as per the supported priority levels.
If the implementation does not support setting up
priority, all queue pairs will be on same priority level
and this field will be ignored.

Signed-off-by: Akhil Goyal <gakhil@marvell.com>
Change-Id: Ida87d0f354901013f3321cfa9ada443f39b00e0f
---
 lib/cryptodev/rte_cryptodev.h | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)

diff --git a/lib/cryptodev/rte_cryptodev.h b/lib/cryptodev/rte_cryptodev.h
index bec947f6d5..0a9cd718ea 100644
--- a/lib/cryptodev/rte_cryptodev.h
+++ b/lib/cryptodev/rte_cryptodev.h
@@ -608,12 +608,34 @@ enum rte_cryptodev_event_type {
 	RTE_CRYPTODEV_EVENT_MAX		/**< max value of this enum */
 };
 
+/* Crypto queue pair priority levels */
+#define RTE_CRYPTODEV_QP_PRIORITY_HIGHEST   0
+/**< Highest priority of a cryptodev queue pair
+ * @see rte_cryptodev_queue_pair_setup(), rte_cryptodev_enqueue_burst()
+ */
+#define RTE_CRYPTODEV_QP_PRIORITY_NORMAL    128
+/**< Normal priority of a cryptodev queue pair
+ * @see rte_cryptodev_queue_pair_setup(), rte_cryptodev_enqueue_burst()
+ */
+#define RTE_CRYPTODEV_QP_PRIORITY_LOWEST    255
+/**< Lowest priority of a cryptodev queue pair
+ * @see rte_cryptodev_queue_pair_setup(), rte_cryptodev_enqueue_burst()
+ */
+
 /** Crypto device queue pair configuration structure. */
 /* Structure rte_cryptodev_qp_conf 8<*/
 struct rte_cryptodev_qp_conf {
 	uint32_t nb_descriptors; /**< Number of descriptors per queue pair */
 	struct rte_mempool *mp_session;
 	/**< The mempool for creating session in sessionless mode */
+	uint8_t priority;
+	/**< Priority for this queue pair relative to other queue pairs.
+	 *
+	 * The requested priority should in the range of
+	 * [@ref RTE_CRYPTODEV_QP_PRIORITY_HIGHEST, @ref RTE_CRYPTODEV_QP_PRIORITY_LOWEST].
+	 * The implementation may normalize the requested priority to
+	 * device supported priority value.
+	 */
 };
 /* >8 End of structure rte_cryptodev_qp_conf. */
 
-- 
2.25.1