[dpdk-stable] patch 'net/bnxt: fix size of Tx ring in HW' has been queued to LTS release 16.11.5

[luca.boccassi at gmail.com]

Hi,

FYI, your patch has been queued to LTS release 16.11.5

Note it hasn't been pushed to http://dpdk.org/browse/dpdk-stable yet.
It will be pushed if I get no objections before 02/09/18. So please
shout if anyone has objections.

Thanks.

Luca Boccassi

---
>From 2d84edbe49ac36d94c87598345ab330fa5e17f9a Mon Sep 17 00:00:00 2001
From: Ajit Khaparde <ajit.khaparde at broadcom.com>
Date: Fri, 26 Jan 2018 09:31:54 -0800
Subject: [PATCH] net/bnxt: fix size of Tx ring in HW

[ upstream commit c771d289cb6295dd0d4abd37cc1689f0bc87cfcb ]

During Tx ring allocation, the actual ring size configured in the HW
ends up being twice the number of txd parameter specified to the driver.
The power of 2 ring size wrongly adds a +1 while sending the ring
create command to the FW.

Fixes: 6eb3cc2294fd ("net/bnxt: add initial Tx code")

Signed-off-by: Ajit Khaparde <ajit.khaparde at broadcom.com>
---
 drivers/net/bnxt/bnxt_txr.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/bnxt/bnxt_txr.c b/drivers/net/bnxt/bnxt_txr.c
index 4518538f7..9cd44a93c 100644
--- a/drivers/net/bnxt/bnxt_txr.c
+++ b/drivers/net/bnxt/bnxt_txr.c
@@ -101,7 +101,7 @@ int bnxt_init_tx_ring_struct(struct bnxt_tx_queue *txq, unsigned int socket_id)
 	if (ring == NULL)
 		return -ENOMEM;
 	txr->tx_ring_struct = ring;
-	ring->ring_size = rte_align32pow2(txq->nb_tx_desc + 1);
+	ring->ring_size = rte_align32pow2(txq->nb_tx_desc);
 	ring->ring_mask = ring->ring_size - 1;
 	ring->bd = (void *)txr->tx_desc_ring;
 	ring->bd_dma = txr->tx_desc_mapping;
-- 
2.14.2