[PATCH 21.11 v1] event/dlb2: handle enqueuing more than maximum depth

[Abdullah Sevincer]

[ upstream commit 9c9e72326bd28cd456509d60bcbe38a15a0bb7d0 ]

This patch addresses an issue of enqueuing more than
max_enq_depth and not able to dequeuing events equal
to max_cq_depth in a single call of rte_event_enqueue_burst
and rte_event_dequeue_burst.

Apply fix for restricting enqueue of events to max_enq_depth
so that in a single rte_event_enqueue_burst() call at most
max_enq_depth events are enqueued.

Also set per port and domain history list sizes based on
cq_depth. This results in dequeuing correct number of
events as set by max_cq_depth.

Fixes: f3cad285bb88 ("event/dlb2: add infos get and configure")

Signed-off-by: Abdullah Sevincer <abdullah.sevincer at intel.com>
---
 drivers/event/dlb2/dlb2.c | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/drivers/event/dlb2/dlb2.c b/drivers/event/dlb2/dlb2.c
index 543f793ed1..2e0f617b9c 100644
--- a/drivers/event/dlb2/dlb2.c
+++ b/drivers/event/dlb2/dlb2.c
@@ -627,7 +627,7 @@ dlb2_hw_create_sched_domain(struct dlb2_hw_dev *handle,
 		cfg->num_ldb_queues;
 
 	cfg->num_hist_list_entries = resources_asked->num_ldb_ports *
-		DLB2_NUM_HIST_LIST_ENTRIES_PER_LDB_PORT;
+		evdev_dlb2_default_info.max_event_port_dequeue_depth;
 
 	if (device_version == DLB2_HW_V2_5) {
 		DLB2_LOG_DBG("sched domain create - ldb_qs=%d, ldb_ports=%d, dir_ports=%d, atomic_inflights=%d, hist_list_entries=%d, credits=%d\n",
@@ -1350,7 +1350,7 @@ dlb2_hw_create_ldb_port(struct dlb2_eventdev *dlb2,
 	cfg.cq_depth = rte_align32pow2(dequeue_depth);
 	cfg.cq_depth_threshold = 1;
 
-	cfg.cq_history_list_size = DLB2_NUM_HIST_LIST_ENTRIES_PER_LDB_PORT;
+	cfg.cq_history_list_size = cfg.cq_depth;
 
 	if (handle->cos_id == DLB2_COS_DEFAULT)
 		cfg.cos_id = 0;
@@ -2937,6 +2937,7 @@ __dlb2_event_enqueue_burst(void *event_port,
 	struct dlb2_eventdev_port *ev_port = event_port;
 	struct dlb2_port *qm_port = &ev_port->qm_port;
 	struct process_local_port_data *port_data;
+	int num_tx;
 	int i;
 
 	RTE_ASSERT(ev_port->enq_configured);
@@ -2946,7 +2947,8 @@ __dlb2_event_enqueue_burst(void *event_port,
 
 	port_data = &dlb2_port[qm_port->id][PORT_TYPE(qm_port)];
 
-	while (i < num) {
+	num_tx = RTE_MIN(num, ev_port->conf.enqueue_depth);
+	while (i <  num_tx) {
 		uint8_t sched_types[DLB2_NUM_QES_PER_CACHE_LINE];
 		uint8_t queue_ids[DLB2_NUM_QES_PER_CACHE_LINE];
 		int pop_offs = 0;
-- 
2.25.1