[dpdk-stable] patch 'net/mlx5: fix metadata item validation for ingress flows' 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/58200ed66af5bfec99190f6e9eba6ffa4031c733

Thanks.

Xueming Li <xuemingl at nvidia.com>

---
>From 58200ed66af5bfec99190f6e9eba6ffa4031c733 Mon Sep 17 00:00:00 2001
From: Viacheslav Ovsiienko <viacheslavo at nvidia.com>
Date: Wed, 10 Feb 2021 11:30:51 +0200
Subject: [PATCH] net/mlx5: fix metadata item validation for ingress flows
Cc: Luca Boccassi <bluca at debian.org>

[ upstream commit aa1c17f1d8202a1a6e64e813103cdbe6b357b0ba ]

In legacy metadata mode the metadata register B is engaged to
handle the metadata item. In the ingress domain the hardware
supports the register setting only, the match on register B
is not supported.

Due to this limitation only the SET_META action can be supported
for the ingress flows, the META item should be rejected on
flow validation.

Fixes: 5f3541724e08 ("net/mlx5: fix flow META item validation")

Signed-off-by: Viacheslav Ovsiienko <viacheslavo at nvidia.com>
---
 drivers/net/mlx5/mlx5_flow_dv.c | 11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)

diff --git a/drivers/net/mlx5/mlx5_flow_dv.c b/drivers/net/mlx5/mlx5_flow_dv.c
index 3fdc3ffe16..353a8df24c 100644
--- a/drivers/net/mlx5/mlx5_flow_dv.c
+++ b/drivers/net/mlx5/mlx5_flow_dv.c
@@ -1450,13 +1450,20 @@ flow_dv_validate_item_meta(struct rte_eth_dev *dev __rte_unused,
 					  "isn't supported");
 		if (reg != REG_A)
 			nic_mask.data = priv->sh->dv_meta_mask;
-	} else if (attr->transfer) {
-		return rte_flow_error_set(error, ENOTSUP,
+	} else {
+		if (attr->transfer)
+			return rte_flow_error_set(error, ENOTSUP,
 					RTE_FLOW_ERROR_TYPE_ITEM, item,
 					"extended metadata feature "
 					"should be enabled when "
 					"meta item is requested "
 					"with e-switch mode ");
+		if (attr->ingress)
+			return rte_flow_error_set(error, ENOTSUP,
+					RTE_FLOW_ERROR_TYPE_ITEM, item,
+					"match on metadata for ingress "
+					"is not supported in legacy "
+					"metadata mode");
 	}
 	if (!mask)
 		mask = &rte_flow_item_meta_mask;
-- 
2.25.1

---
  Diff of the applied patch vs upstream commit (please double-check if non-empty:
---
--- -	2021-05-10 23:59:26.985944800 +0800
+++ 0011-net-mlx5-fix-metadata-item-validation-for-ingress-fl.patch	2021-05-10 23:59:26.320000000 +0800
@@ -1 +1 @@
-From aa1c17f1d8202a1a6e64e813103cdbe6b357b0ba Mon Sep 17 00:00:00 2001
+From 58200ed66af5bfec99190f6e9eba6ffa4031c733 Mon Sep 17 00:00:00 2001
@@ -4,0 +5,3 @@
+Cc: Luca Boccassi <bluca at debian.org>
+
+[ upstream commit aa1c17f1d8202a1a6e64e813103cdbe6b357b0ba ]
@@ -16 +18,0 @@
-Cc: stable at dpdk.org
@@ -24 +26 @@
-index a44291a3c9..1a74d5ac2b 100644
+index 3fdc3ffe16..353a8df24c 100644
@@ -27 +29 @@
-@@ -1960,13 +1960,20 @@ flow_dv_validate_item_meta(struct rte_eth_dev *dev __rte_unused,
+@@ -1450,13 +1450,20 @@ flow_dv_validate_item_meta(struct rte_eth_dev *dev __rte_unused,