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From: Yuanhan Liu <yliu@fridaylinux.org>
To: Ajit Khaparde <ajit.khaparde@broadcom.com>
Cc: dpdk stable <stable@dpdk.org>
Date: Thu, 1 Feb 2018 17:47:44 +0800
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Subject: [dpdk-stable] patch 'net/bnxt: fix size of Tx ring in HW' has been
queued to LTS release 17.11.1
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Hi,
FYI, your patch has been queued to LTS release 17.11.1
Note it hasn't been pushed to http://dpdk.org/browse/dpdk-stable yet.
It will be pushed if I get no objections before 02/03/18. So please
shout if anyone has objections.
Thanks.
--yliu
---
>>From 601ef07d8547a90e3f7c2224e106f559a538cb2f Mon Sep 17 00:00:00 2001
From: Ajit Khaparde <ajit.khaparde@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@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 4a152aa..03d2652 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;
--
2.7.4