[dpdk-stable] patch 'eventdev: fix Rx adapter event flush' has been queued to LTS release 18.11.2

[Kevin Traynor]

Hi,

FYI, your patch has been queued to LTS release 18.11.2

Note it hasn't been pushed to http://dpdk.org/browse/dpdk-stable yet.
It will be pushed if I get no objections before 05/20/19. So please
shout if anyone has objections.

Also note that after the patch there's a diff of the upstream commit vs the
patch applied to the branch. This will indicate if there was any rebasing
needed to apply to the stable branch. If there were code changes for rebasing
(ie: not only metadata diffs), please double check that the rebase was
correctly done.

Queued patches are on a temporary branch at:
https://github.com/kevintraynor/dpdk-stable-queue

This queued commit can be viewed at:
https://github.com/kevintraynor/dpdk-stable-queue/commit/897b241d2d5baaf6de15133608b573da241d8e4e

Thanks.

Kevin Traynor

---
>From 897b241d2d5baaf6de15133608b573da241d8e4e Mon Sep 17 00:00:00 2001
From: Nikhil Rao <nikhil.rao at intel.com>
Date: Fri, 10 May 2019 13:38:10 +0530
Subject: [PATCH] eventdev: fix Rx adapter event flush
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

[ upstream commit 339677f87023ccfa8d96b88dd4469a0dc25f813d ]

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>
Signed-off-by: Nikhil Rao <nikhil.rao at intel.com>
Reviewed-by: Mattias Rönnblom <mattias.ronnblom at ericsson.com>
Tested-by: Matias Elo <matias.elo at nokia.com>
---
 lib/librte_eventdev/rte_event_eth_rx_adapter.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/librte_eventdev/rte_event_eth_rx_adapter.c b/lib/librte_eventdev/rte_event_eth_rx_adapter.c
index 8d178be15..627875a95 100644
--- a/lib/librte_eventdev/rte_event_eth_rx_adapter.c
+++ b/lib/librte_eventdev/rte_event_eth_rx_adapter.c
@@ -873,5 +873,5 @@ rxa_eth_rx(struct rte_event_eth_rx_adapter *rx_adapter,
 	}
 
-	if (buf->count >= BATCH_SIZE)
+	if (buf->count > 0)
 		rxa_flush_event_buffer(rx_adapter);
 
-- 
2.20.1

---
  Diff of the applied patch vs upstream commit (please double-check if non-empty:
---
--- -	2019-05-14 15:39:08.216116484 +0100
+++ 0019-eventdev-fix-Rx-adapter-event-flush.patch	2019-05-14 15:39:07.321558651 +0100
@@ -1 +1 @@
-From 339677f87023ccfa8d96b88dd4469a0dc25f813d Mon Sep 17 00:00:00 2001
+From 897b241d2d5baaf6de15133608b573da241d8e4e Mon Sep 17 00:00:00 2001
@@ -8,0 +9,2 @@
+[ upstream commit 339677f87023ccfa8d96b88dd4469a0dc25f813d ]
+
@@ -18 +19,0 @@
-Cc: stable at dpdk.org
@@ -29 +30 @@
-index 8b6e69daf..b60674b61 100644
+index 8d178be15..627875a95 100644