[dpdk-stable] patch 'bus/dpaa: fix statistics reading' has been queued to stable release 20.11.2

[Xueming Li]

Hi,

FYI, your patch has been queued to stable release 20.11.2

Note it hasn't been pushed to http://dpdk.org/browse/dpdk-stable yet.
It will be pushed if I get no objections before 05/12/21. 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/steevenlee/dpdk

This queued commit can be viewed at:
https://github.com/steevenlee/dpdk/commit/e518710835e10174e0dfe74ebcce73507046a0c6

Thanks.

Xueming Li <xuemingl at nvidia.com>

---
>From e518710835e10174e0dfe74ebcce73507046a0c6 Mon Sep 17 00:00:00 2001
From: Nipun Gupta <nipun.gupta at nxp.com>
Date: Wed, 24 Feb 2021 18:12:50 +0530
Subject: [PATCH] bus/dpaa: fix statistics reading
Cc: Luca Boccassi <bluca at debian.org>

[ upstream commit e62a3f4183f14a91f0dd63e9ea39e749406b5653 ]

Reading of word un-aligned values after reading word aligned
values lead to corruption of memory.
This patch make changes such that word aligned access is made,
before making an un-aligned access

Fixes: 6d6b4f49a155 ("bus/dpaa: add FMAN hardware operations")

Signed-off-by: Nipun Gupta <nipun.gupta at nxp.com>
Acked-by: Hemant Agrawal <hemant.agrawal at nxp.com>
---
 drivers/bus/dpaa/base/fman/fman_hw.c | 33 ++++++++++++++--------------
 1 file changed, 16 insertions(+), 17 deletions(-)

diff --git a/drivers/bus/dpaa/base/fman/fman_hw.c b/drivers/bus/dpaa/base/fman/fman_hw.c
index 4ab49f7853..af9bac76c2 100644
--- a/drivers/bus/dpaa/base/fman/fman_hw.c
+++ b/drivers/bus/dpaa/base/fman/fman_hw.c
@@ -1,6 +1,6 @@
 /* SPDX-License-Identifier: BSD-3-Clause
  *
- * Copyright 2017 NXP
+ * Copyright 2017,2020 NXP
  *
  */
 
@@ -219,20 +219,20 @@ fman_if_stats_get(struct fman_if *p, struct rte_eth_stats *stats)
 	struct memac_regs *regs = m->ccsr_map;
 
 	/* read recved packet count */
-	stats->ipackets = ((u64)in_be32(&regs->rfrm_u)) << 32 |
-			in_be32(&regs->rfrm_l);
-	stats->ibytes = ((u64)in_be32(&regs->roct_u)) << 32 |
-			in_be32(&regs->roct_l);
-	stats->ierrors = ((u64)in_be32(&regs->rerr_u)) << 32 |
-			in_be32(&regs->rerr_l);
+	stats->ipackets = (u64)in_be32(&regs->rfrm_l) |
+			((u64)in_be32(&regs->rfrm_u)) << 32;
+	stats->ibytes = (u64)in_be32(&regs->roct_l) |
+			((u64)in_be32(&regs->roct_u)) << 32;
+	stats->ierrors = (u64)in_be32(&regs->rerr_l) |
+			((u64)in_be32(&regs->rerr_u)) << 32;
 
 	/* read xmited packet count */
-	stats->opackets = ((u64)in_be32(&regs->tfrm_u)) << 32 |
-			in_be32(&regs->tfrm_l);
-	stats->obytes = ((u64)in_be32(&regs->toct_u)) << 32 |
-			in_be32(&regs->toct_l);
-	stats->oerrors = ((u64)in_be32(&regs->terr_u)) << 32 |
-			in_be32(&regs->terr_l);
+	stats->opackets = (u64)in_be32(&regs->tfrm_l) |
+			((u64)in_be32(&regs->tfrm_u)) << 32;
+	stats->obytes = (u64)in_be32(&regs->toct_l) |
+			((u64)in_be32(&regs->toct_u)) << 32;
+	stats->oerrors = (u64)in_be32(&regs->terr_l) |
+			((u64)in_be32(&regs->terr_u)) << 32;
 }
 
 void
@@ -244,10 +244,9 @@ fman_if_stats_get_all(struct fman_if *p, uint64_t *value, int n)
 	uint64_t base_offset = offsetof(struct memac_regs, reoct_l);
 
 	for (i = 0; i < n; i++)
-		value[i] = ((u64)in_be32((char *)regs
-				+ base_offset + 8 * i + 4)) << 32 |
-				((u64)in_be32((char *)regs
-				+ base_offset + 8 * i));
+		value[i] = (((u64)in_be32((char *)regs + base_offset + 8 * i) |
+				(u64)in_be32((char *)regs + base_offset +
+				8 * i + 4)) << 32);
 }
 
 void
-- 
2.25.1

---
  Diff of the applied patch vs upstream commit (please double-check if non-empty:
---
--- -	2021-05-10 23:59:27.037765100 +0800
+++ 0013-bus-dpaa-fix-statistics-reading.patch	2021-05-10 23:59:26.330000000 +0800
@@ -1 +1 @@
-From e62a3f4183f14a91f0dd63e9ea39e749406b5653 Mon Sep 17 00:00:00 2001
+From e518710835e10174e0dfe74ebcce73507046a0c6 Mon Sep 17 00:00:00 2001
@@ -4,0 +5,3 @@
+Cc: Luca Boccassi <bluca at debian.org>
+
+[ upstream commit e62a3f4183f14a91f0dd63e9ea39e749406b5653 ]
@@ -12 +14,0 @@
-Cc: stable at dpdk.org