[dpdk-stable] patch 'net/enetc: fix crash at high speed traffic' 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 05/13/19. 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/b63e66626ce3b462dda963eeea5e6940ecf5af28

Thanks.

Kevin Traynor

---
>From b63e66626ce3b462dda963eeea5e6940ecf5af28 Mon Sep 17 00:00:00 2001
From: Gagandeep Singh <g.singh at nxp.com>
Date: Fri, 12 Apr 2019 12:29:11 +0000
Subject: [PATCH] net/enetc: fix crash at high speed traffic

[ upstream commit e091c6915e3ed468d4f5299e409afa4a89436735 ]

On xmit side, there should be a check whether BD ring
has free BDs available before transmit a packet to avoid
data corruption and buffer leak issue.

Fixes: 469c6111a799 ("net/enetc: enable Rx and Tx")

Signed-off-by: Gagandeep Singh <g.singh at nxp.com>
---
 drivers/net/enetc/enetc_rxtx.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/drivers/net/enetc/enetc_rxtx.c b/drivers/net/enetc/enetc_rxtx.c
index ce43a9efe..ce5a542a7 100644
--- a/drivers/net/enetc/enetc_rxtx.c
+++ b/drivers/net/enetc/enetc_rxtx.c
@@ -50,9 +50,14 @@ enetc_xmit_pkts(void *tx_queue,
 {
 	struct enetc_swbd *tx_swbd;
-	int i, start;
+	int i, start, bds_to_use;
 	struct enetc_tx_bd *txbd;
 	struct enetc_bdr *tx_ring = (struct enetc_bdr *)tx_queue;
 
 	i = tx_ring->next_to_use;
+
+	bds_to_use = enetc_bd_unused(tx_ring);
+	if (bds_to_use < nb_pkts)
+		nb_pkts = bds_to_use;
+
 	start = 0;
 	while (nb_pkts--) {
-- 
2.20.1

---
  Diff of the applied patch vs upstream commit (please double-check if non-empty:
---
--- -	2019-05-08 11:05:06.368391695 +0100
+++ 0010-net-enetc-fix-crash-at-high-speed-traffic.patch	2019-05-08 11:05:05.769934017 +0100
@@ -1 +1 @@
-From e091c6915e3ed468d4f5299e409afa4a89436735 Mon Sep 17 00:00:00 2001
+From b63e66626ce3b462dda963eeea5e6940ecf5af28 Mon Sep 17 00:00:00 2001
@@ -5,0 +6,2 @@
+[ upstream commit e091c6915e3ed468d4f5299e409afa4a89436735 ]
+
@@ -11 +12,0 @@
-Cc: stable at dpdk.org
@@ -19 +20 @@
-index 0ce7dbee7..81b0ef3b1 100644
+index ce43a9efe..ce5a542a7 100644