[dpdk-dev] [RFC 2/3] event/dsw: make use of eventdev maintenance facility

["Mattias Rönnblom" <mattias.ronnblom@ericsson.com>]

Set the RTE_EVENT_DEV_CAP_REQUIRES_MAINT flag, and perform DSW
background tasks on rte_event_maintain() calls.

Signed-off-by: Mattias Rönnblom <mattias.ronnblom@ericsson.com>
---
 drivers/event/dsw/dsw_evdev.c      | 4 +++-
 drivers/event/dsw/dsw_evdev.h      | 1 +
 drivers/event/dsw/dsw_event.c      | 8 ++++++++
 lib/librte_eventdev/rte_eventdev.h | 2 +-
 4 files changed, 13 insertions(+), 2 deletions(-)

diff --git a/drivers/event/dsw/dsw_evdev.c b/drivers/event/dsw/dsw_evdev.c
index 7798a38ad..ebacad2d6 100644
--- a/drivers/event/dsw/dsw_evdev.c
+++ b/drivers/event/dsw/dsw_evdev.c
@@ -223,7 +223,8 @@ dsw_info_get(struct rte_eventdev *dev __rte_unused,
 		.event_dev_cap = RTE_EVENT_DEV_CAP_BURST_MODE|
 		RTE_EVENT_DEV_CAP_DISTRIBUTED_SCHED|
 		RTE_EVENT_DEV_CAP_NONSEQ_MODE|
-		RTE_EVENT_DEV_CAP_MULTIPLE_QUEUE_PORT
+		RTE_EVENT_DEV_CAP_MULTIPLE_QUEUE_PORT|
+		RTE_EVENT_DEV_CAP_REQUIRES_MAINT
 	};
 }
 
@@ -411,6 +412,7 @@ dsw_probe(struct rte_vdev_device *vdev)
 	dev->enqueue_forward_burst = dsw_event_enqueue_forward_burst;
 	dev->dequeue = dsw_event_dequeue;
 	dev->dequeue_burst = dsw_event_dequeue_burst;
+	dev->maintain = dsw_event_maintain;
 
 	if (rte_eal_process_type() != RTE_PROC_PRIMARY)
 		return 0;
diff --git a/drivers/event/dsw/dsw_evdev.h b/drivers/event/dsw/dsw_evdev.h
index 5c7b6108d..deef5061a 100644
--- a/drivers/event/dsw/dsw_evdev.h
+++ b/drivers/event/dsw/dsw_evdev.h
@@ -246,6 +246,7 @@ uint16_t dsw_event_enqueue_forward_burst(void *port,
 uint16_t dsw_event_dequeue(void *port, struct rte_event *ev, uint64_t wait);
 uint16_t dsw_event_dequeue_burst(void *port, struct rte_event *events,
 				 uint16_t num, uint64_t wait);
+void dsw_event_maintain(void *port);
 
 int dsw_xstats_get_names(const struct rte_eventdev *dev,
 			 enum rte_event_dev_xstats_mode mode,
diff --git a/drivers/event/dsw/dsw_event.c b/drivers/event/dsw/dsw_event.c
index d68b71b98..9c0669e1d 100644
--- a/drivers/event/dsw/dsw_event.c
+++ b/drivers/event/dsw/dsw_event.c
@@ -1254,3 +1254,11 @@ dsw_event_dequeue_burst(void *port, struct rte_event *events, uint16_t num,
 
 	return dequeued;
 }
+
+void dsw_event_maintain(void *port)
+{
+	struct dsw_port *source_port = port;
+	struct dsw_evdev *dsw = source_port->dsw;
+
+	dsw_port_bg_process(dsw, source_port);
+}
diff --git a/lib/librte_eventdev/rte_eventdev.h b/lib/librte_eventdev/rte_eventdev.h
index d69150792..00a9380d9 100644
--- a/lib/librte_eventdev/rte_eventdev.h
+++ b/lib/librte_eventdev/rte_eventdev.h
@@ -1235,7 +1235,7 @@ typedef uint16_t (*event_dequeue_burst_t)(void *port, struct rte_event ev[],
 		uint16_t nb_events, uint64_t timeout_ticks);
 /**< @internal Dequeue burst of events from port of a device */
 
-typedef void (*maintain_t)(void *port);
+typedef void (*event_maintain_t)(void *port);
 /**< @internal Maintains a port */
 
 typedef uint16_t (*event_tx_adapter_enqueue)(void *port,
-- 
2.20.1