patch 'net/i40e: fix Rx data buffer size' has been queued to stable release 21.11.5

[Kevin Traynor]

Hi,

FYI, your patch has been queued to stable release 21.11.5

Note it hasn't been pushed to http://dpdk.org/browse/dpdk-stable yet.
It will be pushed if I get no objections before 07/25/23. 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

This queued commit can be viewed at:
https://github.com/kevintraynor/dpdk-stable/commit/d5755af28b88ef9b9a072d74412e803f54e57eaa

Thanks.

Kevin

---
>From d5755af28b88ef9b9a072d74412e803f54e57eaa Mon Sep 17 00:00:00 2001
From: Wenjun Wu <wenjun1.wu at intel.com>
Date: Fri, 14 Apr 2023 13:47:40 +0800
Subject: [PATCH] net/i40e: fix Rx data buffer size

[ upstream commit ff2ec0ce04739240205628207881a91e1e330cb7 ]

According to hardware spec, the data buffer size should not
be greater than 16K - 128.

Fixes: 4861cde46116 ("i40e: new poll mode driver")

Signed-off-by: Wenjun Wu <wenjun1.wu at intel.com>
Acked-by: Qi Zhang <qi.z.zhang at intel.com>
---
 drivers/net/i40e/i40e_rxtx.c | 2 ++
 drivers/net/i40e/i40e_rxtx.h | 3 +++
 2 files changed, 5 insertions(+)

diff --git a/drivers/net/i40e/i40e_rxtx.c b/drivers/net/i40e/i40e_rxtx.c
index 9a00a9b71e..aa188bff14 100644
--- a/drivers/net/i40e/i40e_rxtx.c
+++ b/drivers/net/i40e/i40e_rxtx.c
@@ -2905,4 +2905,6 @@ i40e_rx_queue_config(struct i40e_rx_queue *rxq)
 		rxq->rx_buf_len = RTE_ALIGN_FLOOR(buf_size,
 			(1 << I40E_RXQ_CTX_DBUFF_SHIFT));
+		rxq->rx_buf_len = RTE_MIN(rxq->rx_buf_len,
+					  I40E_RX_MAX_DATA_BUF_SIZE);
 		rxq->hs_mode = i40e_header_split_none;
 		break;
diff --git a/drivers/net/i40e/i40e_rxtx.h b/drivers/net/i40e/i40e_rxtx.h
index 5e6eecc501..0376c219be 100644
--- a/drivers/net/i40e/i40e_rxtx.h
+++ b/drivers/net/i40e/i40e_rxtx.h
@@ -22,4 +22,7 @@
 #define	I40E_ALIGN_RING_DESC	32
 
+/* Max data buffer size must be 16K - 128 bytes */
+#define I40E_RX_MAX_DATA_BUF_SIZE	(16 * 1024 - 128)
+
 #define	I40E_MIN_RING_DESC	64
 #define	I40E_MAX_RING_DESC	4096
-- 
2.41.0

---
  Diff of the applied patch vs upstream commit (please double-check if non-empty:
---
--- -	2023-07-20 16:18:02.809025104 +0100
+++ 0065-net-i40e-fix-Rx-data-buffer-size.patch	2023-07-20 16:17:54.847751267 +0100
@@ -1 +1 @@
-From ff2ec0ce04739240205628207881a91e1e330cb7 Mon Sep 17 00:00:00 2001
+From d5755af28b88ef9b9a072d74412e803f54e57eaa Mon Sep 17 00:00:00 2001
@@ -5,0 +6,2 @@
+[ upstream commit ff2ec0ce04739240205628207881a91e1e330cb7 ]
+
@@ -10 +11,0 @@
-Cc: stable at dpdk.org
@@ -20 +21 @@
-index 788ffb51c2..fbbefb5015 100644
+index 9a00a9b71e..aa188bff14 100644