[PATCH v10 6/7] bbdev: add queue related warning and status information

[Nicolas Chautru <nicolas.chautru@intel.com>]

This allows to expose more information with regards to any
queue related failure and warning which cannot be supported
in existing API.

Signed-off-by: Nicolas Chautru <nicolas.chautru@intel.com>
Acked-by: Maxime Coquelin <maxime.coquelin@redhat.com>
---
 app/test-bbdev/test_bbdev_perf.c |  2 ++
 lib/bbdev/rte_bbdev.c            | 19 +++++++++++++++
 lib/bbdev/rte_bbdev.h            | 41 ++++++++++++++++++++++++++++++++
 lib/bbdev/version.map            |  1 +
 4 files changed, 63 insertions(+)

diff --git a/app/test-bbdev/test_bbdev_perf.c b/app/test-bbdev/test_bbdev_perf.c
index 1abda2d995..653b21fcde 100644
--- a/app/test-bbdev/test_bbdev_perf.c
+++ b/app/test-bbdev/test_bbdev_perf.c
@@ -4360,6 +4360,8 @@ get_bbdev_queue_stats(uint16_t dev_id, uint16_t queue_id,
 	stats->dequeued_count = q_stats->dequeued_count;
 	stats->enqueue_err_count = q_stats->enqueue_err_count;
 	stats->dequeue_err_count = q_stats->dequeue_err_count;
+	stats->enqueue_warning_count = q_stats->enqueue_warning_count;
+	stats->dequeue_warning_count = q_stats->dequeue_warning_count;
 	stats->acc_offload_cycles = q_stats->acc_offload_cycles;
 
 	return 0;
diff --git a/lib/bbdev/rte_bbdev.c b/lib/bbdev/rte_bbdev.c
index 9d65ba8cd3..bdd7c2f00d 100644
--- a/lib/bbdev/rte_bbdev.c
+++ b/lib/bbdev/rte_bbdev.c
@@ -721,6 +721,8 @@ get_stats_from_queues(struct rte_bbdev *dev, struct rte_bbdev_stats *stats)
 		stats->dequeued_count += q_stats->dequeued_count;
 		stats->enqueue_err_count += q_stats->enqueue_err_count;
 		stats->dequeue_err_count += q_stats->dequeue_err_count;
+		stats->enqueue_warn_count += q_stats->enqueue_warn_count;
+		stats->dequeue_warn_count += q_stats->dequeue_warn_count;
 	}
 	rte_bbdev_log_debug("Got stats on %u", dev->data->dev_id);
 }
@@ -1163,3 +1165,20 @@ rte_bbdev_device_status_str(enum rte_bbdev_device_status status)
 	rte_bbdev_log(ERR, "Invalid device status");
 	return NULL;
 }
+
+const char *
+rte_bbdev_enqueue_status_str(enum rte_bbdev_enqueue_status status)
+{
+	static const char * const enq_sta_string[] = {
+		"RTE_BBDEV_ENQ_STATUS_NONE",
+		"RTE_BBDEV_ENQ_STATUS_QUEUE_FULL",
+		"RTE_BBDEV_ENQ_STATUS_RING_FULL",
+		"RTE_BBDEV_ENQ_STATUS_INVALID_OP",
+	};
+
+	if (status < sizeof(enq_sta_string) / sizeof(char *))
+		return enq_sta_string[status];
+
+	rte_bbdev_log(ERR, "Invalid enqueue status");
+	return NULL;
+}
diff --git a/lib/bbdev/rte_bbdev.h b/lib/bbdev/rte_bbdev.h
index 0ac863ce4d..dcac4c220c 100644
--- a/lib/bbdev/rte_bbdev.h
+++ b/lib/bbdev/rte_bbdev.h
@@ -35,6 +35,12 @@ extern "C" {
 #define RTE_BBDEV_MAX_DEVS 128  /**< Max number of devices */
 #endif
 
+/*
+ * Maximum size to be used to manage the enum rte_bbdev_enqueue_status including padding for future
+ * enum insertion
+ */
+#define RTE_BBDEV_ENQ_STATUS_SIZE_MAX 6
+
 /** Flags indicate current state of BBDEV device */
 enum rte_bbdev_state {
 	RTE_BBDEV_UNUSED,
@@ -223,6 +229,20 @@ rte_bbdev_queue_start(uint16_t dev_id, uint16_t queue_id);
 int
 rte_bbdev_queue_stop(uint16_t dev_id, uint16_t queue_id);
 
+/**
+ * Flags indicate the reason why a previous enqueue may not have
+ * consumed all requested operations
+ * In case of multiple reasons the latter supersedes a previous one.
+ * The related macro RTE_BBDEV_ENQ_STATUS_SIZE_MAX can be used as an absolute maximum for
+ * notably sizing array while allowing for future enumeration insertion.
+ */
+enum rte_bbdev_enqueue_status {
+	RTE_BBDEV_ENQ_STATUS_NONE,             /**< Nothing to report */
+	RTE_BBDEV_ENQ_STATUS_QUEUE_FULL,       /**< Not enough room in queue */
+	RTE_BBDEV_ENQ_STATUS_RING_FULL,        /**< Not enough room in ring */
+	RTE_BBDEV_ENQ_STATUS_INVALID_OP,       /**< Operation was rejected as invalid */
+};
+
 /**
  * Flags indicate the status of the device
  */
@@ -246,6 +266,12 @@ struct rte_bbdev_stats {
 	uint64_t enqueue_err_count;
 	/** Total error count on operations dequeued */
 	uint64_t dequeue_err_count;
+	/** Total warning count on operations enqueued */
+	uint64_t enqueue_warn_count;
+	/** Total warning count on operations dequeued */
+	uint64_t dequeue_warn_count;
+	/** Total enqueue status count based on rte_bbdev_enqueue_status enum */
+	uint64_t enqueue_status_count[RTE_BBDEV_ENQ_STATUS_SIZE_MAX];
 	/** CPU cycles consumed by the (HW/SW) accelerator device to offload
 	 *  the enqueue request to its internal queues.
 	 *  - For a HW device this is the cycles consumed in MMIO write
@@ -386,6 +412,7 @@ struct rte_bbdev_queue_data {
 	void *queue_private;  /**< Driver-specific per-queue data */
 	struct rte_bbdev_queue_conf conf;  /**< Current configuration */
 	struct rte_bbdev_stats queue_stats;  /**< Queue statistics */
+	enum rte_bbdev_enqueue_status enqueue_status; /**< Enqueue status when op is rejected */
 	bool started;  /**< Queue state */
 };
 
@@ -938,6 +965,20 @@ __rte_experimental
 const char*
 rte_bbdev_device_status_str(enum rte_bbdev_device_status status);
 
+/**
+ * Converts queue status from enum to string
+ *
+ * @param status
+ *   Queue status as enum
+ *
+ * @returns
+ *  Queue status as string or NULL if op_type is invalid
+ *
+ */
+__rte_experimental
+const char*
+rte_bbdev_enqueue_status_str(enum rte_bbdev_enqueue_status status);
+
 #ifdef __cplusplus
 }
 #endif
diff --git a/lib/bbdev/version.map b/lib/bbdev/version.map
index 0cbeab3d47..f5e2dd742e 100644
--- a/lib/bbdev/version.map
+++ b/lib/bbdev/version.map
@@ -45,6 +45,7 @@ EXPERIMENTAL {
 
 	# added in 22.11
 	rte_bbdev_device_status_str;
+	rte_bbdev_enqueue_status_str;
 	rte_bbdev_enqueue_fft_ops;
 	rte_bbdev_dequeue_fft_ops;
 	rte_bbdev_fft_op_alloc_bulk;
-- 
2.37.1