[dpdk-stable] patch 'examples/l3fwd-power: fix Rx interrupt disabling' has been queued to LTS release 18.11.6

[Kevin Traynor]

Hi,

FYI, your patch has been queued to LTS release 18.11.6

Note it hasn't been pushed to http://dpdk.org/browse/dpdk-stable yet.
It will be pushed if I get no objections before 12/16/19. 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/fbf65ffa07f781f3d590e2ed3ae1d6a3dfdd2143

Thanks.

Kevin.

---
>From fbf65ffa07f781f3d590e2ed3ae1d6a3dfdd2143 Mon Sep 17 00:00:00 2001
From: Xiao Zhang <xiao.zhang at intel.com>
Date: Wed, 11 Sep 2019 00:10:14 +0800
Subject: [PATCH] examples/l3fwd-power: fix Rx interrupt disabling

[ upstream commit 0412cfeff907bb9102a2ca834e95ef8c6767f538 ]

Interrupt will not be received when disabling RX interrupt without
synchronization mechanism sometimes which leads to wake up issue.
Add spinlock to fix it.

Fixes: b736d64787 ("examples/l3fwd-power: disable Rx interrupt when waking up")

Signed-off-by: Xiao Zhang <xiao.zhang at intel.com>
Reviewed-by: Marvin Liu <yong.liu at intel.com>
Acked-by: David Hunt <david.hunt at intel.com>
---
 examples/l3fwd-power/main.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/examples/l3fwd-power/main.c b/examples/l3fwd-power/main.c
index 3421de8ec..ec06129c1 100644
--- a/examples/l3fwd-power/main.c
+++ b/examples/l3fwd-power/main.c
@@ -815,5 +815,7 @@ sleep_until_rx_interrupt(int num)
 		queue_id = ((uintptr_t)data) &
 			RTE_LEN2MASK(CHAR_BIT, uint8_t);
+		rte_spinlock_lock(&(locks[port_id]));
 		rte_eth_dev_rx_intr_disable(port_id, queue_id);
+		rte_spinlock_unlock(&(locks[port_id]));
 		RTE_LOG(INFO, L3FWD_POWER,
 			"lcore %u is waked up from rx interrupt on"
-- 
2.21.0

---
  Diff of the applied patch vs upstream commit (please double-check if non-empty:
---
--- -	2019-12-10 14:49:41.906673061 +0000
+++ 0042-examples-l3fwd-power-fix-Rx-interrupt-disabling.patch	2019-12-10 14:49:39.074457357 +0000
@@ -1 +1 @@
-From 0412cfeff907bb9102a2ca834e95ef8c6767f538 Mon Sep 17 00:00:00 2001
+From fbf65ffa07f781f3d590e2ed3ae1d6a3dfdd2143 Mon Sep 17 00:00:00 2001
@@ -5,0 +6,2 @@
+[ upstream commit 0412cfeff907bb9102a2ca834e95ef8c6767f538 ]
+
@@ -11 +12,0 @@
-Cc: stable at dpdk.org
@@ -21 +22 @@
-index a03f64a1a..d049d8a5d 100644
+index 3421de8ec..ec06129c1 100644
@@ -24 +25 @@
-@@ -881,5 +881,7 @@ sleep_until_rx_interrupt(int num)
+@@ -815,5 +815,7 @@ sleep_until_rx_interrupt(int num)