[dpdk-stable] [PATCH v3] eventdev: fix Rx adapter event flush logic

[Nikhil Rao]

The Rx adapter flushes events only if it has BATCH_SIZE
events buffered where BATCH_SIZE is set to 32, e.g., if a
single packet is sent, it is never passed to
eventdev. Fix this issue by adding an event buffer flush
either when a Rx queue is found to be empty or the adapter service
function has processed the max number of packets for an invocation.

Bugzilla ID: 277

Fixes: 6b83f5935543 ("eventdev: add event buffer flush in Rx adapter")

Reported-by: Matias Elo <matias.elo at nokia.com>

CC: stable at dpdk.org

Signed-off-by: Nikhil Rao <nikhil.rao at intel.com>
---
 lib/librte_eventdev/rte_event_eth_rx_adapter.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

v2:
* add Bugzilla ID

v3:
* add stable CC
* replace boolean check with check for > 0

diff --git a/lib/librte_eventdev/rte_event_eth_rx_adapter.c b/lib/librte_eventdev/rte_event_eth_rx_adapter.c
index 8b6e69d..b60674b 100644
--- a/lib/librte_eventdev/rte_event_eth_rx_adapter.c
+++ b/lib/librte_eventdev/rte_event_eth_rx_adapter.c
@@ -872,7 +872,7 @@ static uint16_t rxa_gcd_u16(uint16_t a, uint16_t b)
 			break;
 	}
 
-	if (buf->count >= BATCH_SIZE)
+	if (buf->count > 0)
 		rxa_flush_event_buffer(rx_adapter);
 
 	return nb_rx;
-- 
1.8.3.1