[dpdk-stable] patch 'net/qede: fix setting MTU' 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 12/17/19. 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/9e72106d516ab1d4c5372ef71afb1c0398dfeba5

Thanks.

Kevin.

---
>From 9e72106d516ab1d4c5372ef71afb1c0398dfeba5 Mon Sep 17 00:00:00 2001
From: Shahed Shaikh <shshaikh at marvell.com>
Date: Sat, 19 Oct 2019 22:20:50 -0700
Subject: [PATCH] net/qede: fix setting MTU

[ upstream commit 29bb154ff047d7fd7b0d4f08ce3ca25f1abfd1fe ]

New MTU value is not propagated to vport in HW when MTU update request
is sent while ports are stopped.

This patch fixes the logic error for above mentioned condition.

Fixes: d121a6b5f781 ("net/qede: fix VF MTU update")

Signed-off-by: Shahed Shaikh <shshaikh at marvell.com>
Reviewed-by: Rasesh Mody <rmody at marvell.com>
---
 drivers/net/qede/qede_ethdev.c | 8 +++++---
 drivers/net/qede/qede_ethdev.h | 1 +
 2 files changed, 6 insertions(+), 3 deletions(-)

diff --git a/drivers/net/qede/qede_ethdev.c b/drivers/net/qede/qede_ethdev.c
index 97d991cad..acb61cc21 100644
--- a/drivers/net/qede/qede_ethdev.c
+++ b/drivers/net/qede/qede_ethdev.c
@@ -1021,7 +1021,9 @@ static int qede_dev_start(struct rte_eth_dev *eth_dev)
 
 	/* Update MTU only if it has changed */
-	if (eth_dev->data->mtu != qdev->mtu) {
-		if (qede_update_mtu(eth_dev, qdev->mtu))
+	if (qdev->new_mtu && qdev->new_mtu != qdev->mtu) {
+		if (qede_update_mtu(eth_dev, qdev->new_mtu))
 			goto err;
+		qdev->mtu = qdev->new_mtu;
+		qdev->new_mtu = 0;
 	}
 
@@ -2207,5 +2209,5 @@ static int qede_set_mtu(struct rte_eth_dev *dev, uint16_t mtu)
 	}
 	rte_delay_ms(1000);
-	qdev->mtu = mtu;
+	qdev->new_mtu = mtu;
 
 	/* Fix up RX buf size for all queues of the port */
diff --git a/drivers/net/qede/qede_ethdev.h b/drivers/net/qede/qede_ethdev.h
index 735dfdb66..1a426cf00 100644
--- a/drivers/net/qede/qede_ethdev.h
+++ b/drivers/net/qede/qede_ethdev.h
@@ -218,4 +218,5 @@ struct qede_dev {
 	struct qede_fastpath_cmt *fp_array_cmt;
 	uint16_t mtu;
+	uint16_t new_mtu;
 	bool enable_tx_switching;
 	bool rss_enable;
-- 
2.21.0

---
  Diff of the applied patch vs upstream commit (please double-check if non-empty:
---
--- -	2019-12-11 21:24:12.810348176 +0000
+++ 0001-net-qede-fix-setting-MTU.patch	2019-12-11 21:24:12.506654545 +0000
@@ -1 +1 @@
-From 29bb154ff047d7fd7b0d4f08ce3ca25f1abfd1fe Mon Sep 17 00:00:00 2001
+From 9e72106d516ab1d4c5372ef71afb1c0398dfeba5 Mon Sep 17 00:00:00 2001
@@ -5,0 +6,2 @@
+[ upstream commit 29bb154ff047d7fd7b0d4f08ce3ca25f1abfd1fe ]
+
@@ -12 +13,0 @@
-Cc: stable at dpdk.org
@@ -22 +23 @@
-index 53fdfde9a..42e2b5083 100644
+index 97d991cad..acb61cc21 100644
@@ -25 +26 @@
-@@ -1039,7 +1039,9 @@ static int qede_dev_start(struct rte_eth_dev *eth_dev)
+@@ -1021,7 +1021,9 @@ static int qede_dev_start(struct rte_eth_dev *eth_dev)
@@ -37 +38 @@
-@@ -2249,5 +2251,5 @@ static int qede_set_mtu(struct rte_eth_dev *dev, uint16_t mtu)
+@@ -2207,5 +2209,5 @@ static int qede_set_mtu(struct rte_eth_dev *dev, uint16_t mtu)
@@ -45 +46 @@
-index 21115a077..b988a73f2 100644
+index 735dfdb66..1a426cf00 100644
@@ -48 +49 @@
-@@ -226,4 +226,5 @@ struct qede_dev {
+@@ -218,4 +218,5 @@ struct qede_dev {