[dpdk-dev] [PATCH] eventdev: define the default value for dequeue timeout

[Jerin Jacob <jerin.jacob@caviumnetworks.com>]

Defining the value 0 as default value for dequeue timeout
will help the application reduce the configuration setup
if the application is interested only in default
timeout value.

Signed-off-by: Jerin Jacob <jerin.jacob@caviumnetworks.com>
---
This patch will fix following error found in the event_pipeline RFC application
http://dpdk.org/dev/patchwork/patch/23799/ with event_octeontx HW driver.

EVENTDEV: rte_event_dev_configure() line 379: dev0 invalid
dequeue_timeout_ns=0 min_dequeue_timeout_ns=853 max_dequeue_timeout_ns=873813
---
 drivers/event/octeontx/ssovf_evdev.c | 2 ++
 lib/librte_eventdev/rte_eventdev.c   | 5 +++--
 lib/librte_eventdev/rte_eventdev.h   | 1 +
 3 files changed, 6 insertions(+), 2 deletions(-)

diff --git a/drivers/event/octeontx/ssovf_evdev.c b/drivers/event/octeontx/ssovf_evdev.c
index c80a44379..5499b1bf7 100644
--- a/drivers/event/octeontx/ssovf_evdev.c
+++ b/drivers/event/octeontx/ssovf_evdev.c
@@ -194,6 +194,8 @@ ssovf_configure(const struct rte_eventdev *dev)
 
 	ssovf_func_trace();
 	deq_tmo_ns = conf->dequeue_timeout_ns;
+	if (deq_tmo_ns == 0)
+		deq_tmo_ns = edev->min_deq_timeout_ns;
 
 	if (conf->event_dev_cfg & RTE_EVENT_DEV_CFG_PER_DEQUEUE_TIMEOUT) {
 		edev->is_timeout_deq = 1;
diff --git a/lib/librte_eventdev/rte_eventdev.c b/lib/librte_eventdev/rte_eventdev.c
index 20afc3f0e..8cafffe03 100644
--- a/lib/librte_eventdev/rte_eventdev.c
+++ b/lib/librte_eventdev/rte_eventdev.c
@@ -369,9 +369,10 @@ rte_event_dev_configure(uint8_t dev_id,
 
 	/* Check dequeue_timeout_ns value is in limit */
 	if (!(dev_conf->event_dev_cfg & RTE_EVENT_DEV_CFG_PER_DEQUEUE_TIMEOUT)) {
-		if (dev_conf->dequeue_timeout_ns < info.min_dequeue_timeout_ns
+		if (dev_conf->dequeue_timeout_ns &&
+		    (dev_conf->dequeue_timeout_ns < info.min_dequeue_timeout_ns
 			|| dev_conf->dequeue_timeout_ns >
-				 info.max_dequeue_timeout_ns) {
+				 info.max_dequeue_timeout_ns)) {
 			RTE_EDEV_LOG_ERR("dev%d invalid dequeue_timeout_ns=%d"
 			" min_dequeue_timeout_ns=%d max_dequeue_timeout_ns=%d",
 			dev_id, dev_conf->dequeue_timeout_ns,
diff --git a/lib/librte_eventdev/rte_eventdev.h b/lib/librte_eventdev/rte_eventdev.h
index 94284337d..f39fbc6b9 100644
--- a/lib/librte_eventdev/rte_eventdev.h
+++ b/lib/librte_eventdev/rte_eventdev.h
@@ -409,6 +409,7 @@ struct rte_event_dev_config {
 	 * This value should be in the range of *min_dequeue_timeout_ns* and
 	 * *max_dequeue_timeout_ns* which previously provided in
 	 * rte_event_dev_info_get()
+	 * The value 0 is allowed, in which case, default dequeue timeout used.
 	 * @see RTE_EVENT_DEV_CFG_PER_DEQUEUE_TIMEOUT
 	 */
 	int32_t nb_events_limit;
-- 
2.13.0