patch 'regex/mlx5: fix doorbell record' has been queued to stable release 22.11.2

[Xueming Li]

Hi,

FYI, your patch has been queued to stable release 22.11.2

Note it hasn't been pushed to http://dpdk.org/browse/dpdk-stable yet.
It will be pushed if I get no objections before 04/11/23. 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://git.dpdk.org/dpdk-stable/log/?h=22.11-staging

This queued commit can be viewed at:
https://git.dpdk.org/dpdk-stable/log/?h=22.11-staging/commit/4224d5f5218a792143a45d30aeef594ccaade5cf

Thanks.

Xueming Li <xuemingl at nvidia.com>

---
>From 4224d5f5218a792143a45d30aeef594ccaade5cf Mon Sep 17 00:00:00 2001
From: Gerry Gribbon <ggribbon at nvidia.com>
Date: Tue, 21 Feb 2023 07:49:57 +0000
Subject: [PATCH] regex/mlx5: fix doorbell record
Cc: Xueming Li <xuemingl at nvidia.com>

[ upstream commit b15d75b2872efce397d827dac78692a919358302 ]

We were writing a value that should represent the number of items to be
processed by hardware. The value being written was off by 1 (N*4)+3;
The value should be (N*4) + 4 simplified to (N+1)*4

Fixes: 5dfa003db53f ("common/mlx5: fix post doorbell barrier")

Signed-off-by: Gerry Gribbon <ggribbon at nvidia.com>
---
 drivers/regex/mlx5/mlx5_regex_fastpath.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/regex/mlx5/mlx5_regex_fastpath.c b/drivers/regex/mlx5/mlx5_regex_fastpath.c
index 6c87afa923..8e5f8c9c95 100644
--- a/drivers/regex/mlx5/mlx5_regex_fastpath.c
+++ b/drivers/regex/mlx5/mlx5_regex_fastpath.c
@@ -211,8 +211,8 @@ send_doorbell(struct mlx5_regex_priv *priv, struct mlx5_regex_hw_qp *qp)
 			    (MLX5_SEND_WQE_BB << (priv->has_umr ? 2 : 0)) +
 			    (priv->has_umr ? MLX5_REGEX_UMR_WQE_SIZE : 0);
 	uint8_t *wqe = (uint8_t *)(uintptr_t)qp->qp_obj.wqes + wqe_offset;
-	uint32_t actual_pi = (priv->has_umr ? (qp->db_pi * 4 + 3) : qp->db_pi) &
-			     MLX5_REGEX_MAX_WQE_INDEX;
+	uint32_t actual_pi = (priv->has_umr ? ((1 + qp->db_pi) * 4) : qp->db_pi)
+			     & MLX5_REGEX_MAX_WQE_INDEX;
 
 	/* Or the fm_ce_se instead of set, avoid the fence be cleared. */
 	((struct mlx5_wqe_ctrl_seg *)wqe)->fm_ce_se |= MLX5_WQE_CTRL_CQ_UPDATE;
-- 
2.25.1

---
  Diff of the applied patch vs upstream commit (please double-check if non-empty:
---
--- -	2023-04-09 21:45:40.420181000 +0800
+++ 0064-regex-mlx5-fix-doorbell-record.patch	2023-04-09 21:45:38.669042200 +0800
@@ -1 +1 @@
-From b15d75b2872efce397d827dac78692a919358302 Mon Sep 17 00:00:00 2001
+From 4224d5f5218a792143a45d30aeef594ccaade5cf Mon Sep 17 00:00:00 2001
@@ -4,0 +5,3 @@
+Cc: Xueming Li <xuemingl at nvidia.com>
+
+[ upstream commit b15d75b2872efce397d827dac78692a919358302 ]
@@ -11 +13,0 @@
-Cc: stable at dpdk.org