[dpdk-stable] patch 'net/qede: fix slow path completion timeout' has been queued to stable release 18.02.2

[luca.boccassi at gmail.com]

Hi,

FYI, your patch has been queued to stable release 18.02.2

Note it hasn't been pushed to http://dpdk.org/browse/dpdk-stable yet.
It will be pushed if I get no objections before 05/31/18. So please
shout if anyone has objections.

Thanks.

Luca Boccassi

---
>From e6d531b7aef43ffc4e5331d822d94ddf073172e6 Mon Sep 17 00:00:00 2001
From: Shahed Shaikh <shahed.shaikh at cavium.com>
Date: Wed, 23 May 2018 11:48:53 -0700
Subject: [PATCH] net/qede: fix slow path completion timeout

[ upstream commit 0833120f20f0aeae8496d39bddaad0c1a70b0bfc ]

In 100G mode, we poll firmware slow path completion for every 1 second,
which is not enough and may result in completion timeout if
driver misses that window.

Patch "eal: set affinity for control threads" exposed this issue since
alarm callback runs in control thread context.

Fix this issue by update polling period to 100ms.

Fixes: d651ee4919cd ("eal: set affinity for control threads")
Fixes: 2af14ca79c0a ("net/qede: support 100G")

Signed-off-by: Shahed Shaikh <shahed.shaikh at cavium.com>
---
 drivers/net/qede/qede_ethdev.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/net/qede/qede_ethdev.c b/drivers/net/qede/qede_ethdev.c
index 65eb33e73..6dfff07e2 100644
--- a/drivers/net/qede/qede_ethdev.c
+++ b/drivers/net/qede/qede_ethdev.c
@@ -16,7 +16,7 @@ int qede_logtype_init;
 int qede_logtype_driver;
 
 static const struct qed_eth_ops *qed_ops;
-static int64_t timer_period = 1;
+#define QEDE_SP_TIMER_PERIOD	10000 /* 100ms */
 
 /* VXLAN tunnel classification mapping */
 const struct _qede_udp_tunn_types {
@@ -1649,7 +1649,7 @@ static void qede_poll_sp_sb_cb(void *param)
 	qede_interrupt_action(ECORE_LEADING_HWFN(edev));
 	qede_interrupt_action(&edev->hwfns[1]);
 
-	rc = rte_eal_alarm_set(timer_period * US_PER_S,
+	rc = rte_eal_alarm_set(QEDE_SP_TIMER_PERIOD,
 			       qede_poll_sp_sb_cb,
 			       (void *)eth_dev);
 	if (rc != 0) {
@@ -3046,7 +3046,7 @@ static int qede_common_dev_init(struct rte_eth_dev *eth_dev, bool is_vf)
 	 * interrupt vector but we need one for each engine.
 	 */
 	if (ECORE_IS_CMT(edev) && IS_PF(edev)) {
-		rc = rte_eal_alarm_set(timer_period * US_PER_S,
+		rc = rte_eal_alarm_set(QEDE_SP_TIMER_PERIOD,
 				       qede_poll_sp_sb_cb,
 				       (void *)eth_dev);
 		if (rc != 0) {
-- 
2.17.0