patch 'net/hns3: disable SCTP verification tag for RSS hash input' has been queued to stable release 23.11.2

[Xueming Li]

Hi,

FYI, your patch has been queued to stable release 23.11.2

Note it hasn't been pushed to http://dpdk.org/browse/dpdk-stable yet.
It will be pushed if I get no objections before 07/14/24. 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=23.11-staging

This queued commit can be viewed at:
https://git.dpdk.org/dpdk-stable/commit/?h=23.11-staging&id=94cdd81ce0bf3175e02bceb5e996f1bc3e7f31f7

Thanks.

Xueming Li <xuemingl at nvidia.com>

---
>From 94cdd81ce0bf3175e02bceb5e996f1bc3e7f31f7 Mon Sep 17 00:00:00 2001
From: Jie Hai <haijie1 at huawei.com>
Date: Wed, 3 Apr 2024 18:16:23 +0800
Subject: [PATCH] net/hns3: disable SCTP verification tag for RSS hash input
Cc: Xueming Li <xuemingl at nvidia.com>

[ upstream commit bb1f4717636f5b7d27f4f2fe30469b69d8910bd0 ]

When the symmetric RSS algorithm is used, the same packet is
expected to be hashed to the same queue in the upstream and
downstream directions.

The problem is that it could map the packets in the same SCTP
connection to different NIC RX queues depending on the direction
of packets. This is because the verification Tag is used as the
RSS hash input for the SCTP packets, and the value depends on the
peer end of the SCTP connection and could not be symmetrically
used in the hardware-implemented RSS algorithm.

In addition, the ethdev framework doesn't support setting SCTP
V-tag as the RSS hash input. So disable it for all RSS hash
algorithms.

Signed-off-by: Jie Hai <haijie1 at huawei.com>
---
 drivers/net/hns3/hns3_rss.c | 6 ++----
 drivers/net/hns3/hns3_rss.h | 6 ++----
 2 files changed, 4 insertions(+), 8 deletions(-)

diff --git a/drivers/net/hns3/hns3_rss.c b/drivers/net/hns3/hns3_rss.c
index 15feb26043..3eae4caf52 100644
--- a/drivers/net/hns3/hns3_rss.c
+++ b/drivers/net/hns3/hns3_rss.c
@@ -153,8 +153,7 @@ static const struct {
 	  BIT_ULL(HNS3_RSS_FIELD_IPV4_SCTP_EN_IP_S) |
 	  BIT_ULL(HNS3_RSS_FIELD_IPV4_SCTP_EN_IP_D) |
 	  BIT_ULL(HNS3_RSS_FIELD_IPV4_SCTP_EN_SCTP_S) |
-	  BIT_ULL(HNS3_RSS_FIELD_IPV4_SCTP_EN_SCTP_D) |
-	  BIT_ULL(HNS3_RSS_FIELD_IPV4_SCTP_EN_SCTP_VER),
+	  BIT_ULL(HNS3_RSS_FIELD_IPV4_SCTP_EN_SCTP_D),
 	  HNS3_RSS_TUPLE_IPV4_SCTP_M },
 
 	/* IPV6-FRAG */
@@ -274,8 +273,7 @@ static const struct {
 	  BIT_ULL(HNS3_RSS_FIELD_IPV6_SCTP_EN_IP_S) |
 	  BIT_ULL(HNS3_RSS_FIELD_IPV6_SCTP_EN_IP_D) |
 	  BIT_ULL(HNS3_RSS_FIELD_IPV6_SCTP_EN_SCTP_D) |
-	  BIT_ULL(HNS3_RSS_FIELD_IPV6_SCTP_EN_SCTP_S) |
-	  BIT_ULL(HNS3_RSS_FIELD_IPV6_SCTP_EN_SCTP_VER),
+	  BIT_ULL(HNS3_RSS_FIELD_IPV6_SCTP_EN_SCTP_S),
 	  HNS3_RSS_TUPLE_IPV6_SCTP_M },
 };
 
diff --git a/drivers/net/hns3/hns3_rss.h b/drivers/net/hns3/hns3_rss.h
index 9d182a8025..0755760b45 100644
--- a/drivers/net/hns3/hns3_rss.h
+++ b/drivers/net/hns3/hns3_rss.h
@@ -49,7 +49,6 @@ enum hns3_tuple_field {
 	HNS3_RSS_FIELD_IPV4_SCTP_EN_SCTP_S,
 	HNS3_RSS_FIELD_IPV4_SCTP_EN_IP_D,
 	HNS3_RSS_FIELD_IPV4_SCTP_EN_IP_S,
-	HNS3_RSS_FIELD_IPV4_SCTP_EN_SCTP_VER,
 
 	/* IPV4 ENABLE FIELD */
 	HNS3_RSS_FIELD_IPV4_EN_NONFRAG_IP_D = 24,
@@ -74,7 +73,6 @@ enum hns3_tuple_field {
 	HNS3_RSS_FIELD_IPV6_SCTP_EN_SCTP_S,
 	HNS3_RSS_FIELD_IPV6_SCTP_EN_IP_D,
 	HNS3_RSS_FIELD_IPV6_SCTP_EN_IP_S,
-	HNS3_RSS_FIELD_IPV6_SCTP_EN_SCTP_VER,
 
 	/* IPV6 ENABLE FIELD */
 	HNS3_RSS_FIELD_IPV6_NONFRAG_IP_D = 56,
@@ -96,12 +94,12 @@ enum hns3_tuple_field {
 
 #define HNS3_RSS_TUPLE_IPV4_TCP_M	GENMASK(3, 0)
 #define HNS3_RSS_TUPLE_IPV4_UDP_M	GENMASK(11, 8)
-#define HNS3_RSS_TUPLE_IPV4_SCTP_M	GENMASK(20, 16)
+#define HNS3_RSS_TUPLE_IPV4_SCTP_M	GENMASK(19, 16)
 #define HNS3_RSS_TUPLE_IPV4_NONF_M	GENMASK(25, 24)
 #define HNS3_RSS_TUPLE_IPV4_FLAG_M	GENMASK(27, 26)
 #define HNS3_RSS_TUPLE_IPV6_TCP_M	GENMASK(35, 32)
 #define HNS3_RSS_TUPLE_IPV6_UDP_M	GENMASK(43, 40)
-#define HNS3_RSS_TUPLE_IPV6_SCTP_M	GENMASK(52, 48)
+#define HNS3_RSS_TUPLE_IPV6_SCTP_M	GENMASK(51, 48)
 #define HNS3_RSS_TUPLE_IPV6_NONF_M	GENMASK(57, 56)
 #define HNS3_RSS_TUPLE_IPV6_FLAG_M	GENMASK(59, 58)
 
-- 
2.34.1

---
  Diff of the applied patch vs upstream commit (please double-check if non-empty:
---
--- -	2024-07-12 18:40:14.978124522 +0800
+++ 0015-net-hns3-disable-SCTP-verification-tag-for-RSS-hash-.patch	2024-07-12 18:40:13.936594247 +0800
@@ -1 +1 @@
-From bb1f4717636f5b7d27f4f2fe30469b69d8910bd0 Mon Sep 17 00:00:00 2001
+From 94cdd81ce0bf3175e02bceb5e996f1bc3e7f31f7 Mon Sep 17 00:00:00 2001
@@ -4,0 +5,3 @@
+Cc: Xueming Li <xuemingl at nvidia.com>
+
+[ upstream commit bb1f4717636f5b7d27f4f2fe30469b69d8910bd0 ]
@@ -20,2 +22,0 @@
-
-Cc: stable at dpdk.org