[dpdk-stable] patch 'net/bnxt: fix buffer allocation reattempt' has been queued to LTS release 18.11.7

[Kevin Traynor]

Hi,

FYI, your patch has been queued to LTS release 18.11.7

Note it hasn't been pushed to http://dpdk.org/browse/dpdk-stable yet.
It will be pushed if I get no objections before 02/25/20. 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/19562f083ea2f118b61820482416db47aa88be19

Thanks.

Kevin.

---
>From 19562f083ea2f118b61820482416db47aa88be19 Mon Sep 17 00:00:00 2001
From: Santoshkumar Karanappa Rastapur <santosh.rastapur at broadcom.com>
Date: Thu, 6 Feb 2020 22:03:14 +0530
Subject: [PATCH] net/bnxt: fix buffer allocation reattempt

[ upstream commit 01829dea7303bc91063c461a675856dbbbcc6460 ]

In case of a buffer allocation failure, we reattempt buffer allocation
before the Rx handler exits. We were not attempting this when producer
index is greater than the number of buffers to allocate. Fixed it with
correct checks.

Fixes: d9dd0b29ed31 ("net/bnxt: fix Rx handling and buffer allocation logic")

Signed-off-by: Santoshkumar Karanappa Rastapur <santosh.rastapur at broadcom.com>
Reviewed-by: Somnath Kotur <somnath.kotur at broadcom.com>
---
 drivers/net/bnxt/bnxt_rxr.c | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/drivers/net/bnxt/bnxt_rxr.c b/drivers/net/bnxt/bnxt_rxr.c
index bcfbad135e..3a1d22354d 100644
--- a/drivers/net/bnxt/bnxt_rxr.c
+++ b/drivers/net/bnxt/bnxt_rxr.c
@@ -609,8 +609,9 @@ uint16_t bnxt_recv_pkts(void *rx_queue, struct rte_mbuf **rx_pkts,
 	/* Attempt to alloc Rx buf in case of a previous allocation failure. */
 	if (rc == -ENOMEM) {
-		int i;
+		int i = RING_NEXT(rxr->rx_ring_struct, prod);
+		int cnt = nb_rx_pkts;
 
-		for (i = prod; i <= nb_rx_pkts;
-			i = RING_NEXT(rxr->rx_ring_struct, i)) {
+		for (; cnt;
+			i = RING_NEXT(rxr->rx_ring_struct, i), cnt--) {
 			struct bnxt_sw_rx_bd *rx_buf = &rxr->rx_buf_ring[i];
 
-- 
2.21.1

---
  Diff of the applied patch vs upstream commit (please double-check if non-empty:
---
--- -	2020-02-19 15:43:50.347081103 +0000
+++ 0012-net-bnxt-fix-buffer-allocation-reattempt.patch	2020-02-19 15:43:49.734141932 +0000
@@ -1 +1 @@
-From 01829dea7303bc91063c461a675856dbbbcc6460 Mon Sep 17 00:00:00 2001
+From 19562f083ea2f118b61820482416db47aa88be19 Mon Sep 17 00:00:00 2001
@@ -5,0 +6,2 @@
+[ upstream commit 01829dea7303bc91063c461a675856dbbbcc6460 ]
+
@@ -12 +13,0 @@
-Cc: stable at dpdk.org
@@ -21 +22 @@
-index 1f47db97ba..bef9720f59 100644
+index bcfbad135e..3a1d22354d 100644
@@ -24 +25 @@
-@@ -679,8 +679,9 @@ uint16_t bnxt_recv_pkts(void *rx_queue, struct rte_mbuf **rx_pkts,
+@@ -609,8 +609,9 @@ uint16_t bnxt_recv_pkts(void *rx_queue, struct rte_mbuf **rx_pkts,