patch 'net/mlx5: fix next protocol validation after flex item' has been queued to stable release 23.11.3

[Xueming Li]

Hi,

FYI, your patch has been queued to stable release 23.11.3

Note it hasn't been pushed to http://dpdk.org/browse/dpdk-stable yet.
It will be pushed if I get no objections before 11/30/24. 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=e03621f4c4a16e42b913431bcb86caecd3240865

Thanks.

Xueming Li <xuemingl at nvidia.com>

---
>From e03621f4c4a16e42b913431bcb86caecd3240865 Mon Sep 17 00:00:00 2001
From: Viacheslav Ovsiienko <viacheslavo at nvidia.com>
Date: Wed, 18 Sep 2024 16:46:21 +0300
Subject: [PATCH] net/mlx5: fix next protocol validation after flex item
Cc: Xueming Li <xuemingl at nvidia.com>

[ upstream commit 3847a3b192315491118eab9830e695eb2c9946e2 ]

On the flow validation some items may check the preceding protocols.
In case of flex item the next protocol is opaque (or can be multiple
ones) we should set neutral value and allow successful validation,
for example, for the combination of flex and following ESP items.

Fixes: a23e9b6e3ee9 ("net/mlx5: handle flex item in flows")

Signed-off-by: Viacheslav Ovsiienko <viacheslavo at nvidia.com>
Acked-by: Dariusz Sosnowski <dsosnowski at nvidia.com>
---
 drivers/net/mlx5/mlx5_flow_dv.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/net/mlx5/mlx5_flow_dv.c b/drivers/net/mlx5/mlx5_flow_dv.c
index 863737ceba..af6bf7e411 100644
--- a/drivers/net/mlx5/mlx5_flow_dv.c
+++ b/drivers/net/mlx5/mlx5_flow_dv.c
@@ -7850,6 +7850,8 @@ flow_dv_validate(struct rte_eth_dev *dev, const struct rte_flow_attr *attr,
 							 tunnel != 0, error);
 			if (ret < 0)
 				return ret;
+			/* Reset for next proto, it is unknown. */
+			next_protocol = 0xff;
 			break;
 		case RTE_FLOW_ITEM_TYPE_METER_COLOR:
 			ret = flow_dv_validate_item_meter_color(dev, items,
--
2.34.1

---
  Diff of the applied patch vs upstream commit (please double-check if non-empty:
---
--- -	2024-11-11 14:23:10.231892736 +0800
+++ 0110-net-mlx5-fix-next-protocol-validation-after-flex-ite.patch	2024-11-11 14:23:05.332192835 +0800
@@ -1 +1 @@
-From 3847a3b192315491118eab9830e695eb2c9946e2 Mon Sep 17 00:00:00 2001
+From e03621f4c4a16e42b913431bcb86caecd3240865 Mon Sep 17 00:00:00 2001
@@ -4,0 +5,3 @@
+Cc: Xueming Li <xuemingl at nvidia.com>
+
+[ upstream commit 3847a3b192315491118eab9830e695eb2c9946e2 ]
@@ -12 +14,0 @@
-Cc: stable at dpdk.org
@@ -21 +23 @@
-index e8ca2b3ed6..4451b114ae 100644
+index 863737ceba..af6bf7e411 100644
@@ -24 +26 @@
-@@ -8194,6 +8194,8 @@ flow_dv_validate(struct rte_eth_dev *dev, const struct rte_flow_attr *attr,
+@@ -7850,6 +7850,8 @@ flow_dv_validate(struct rte_eth_dev *dev, const struct rte_flow_attr *attr,