[dpdk-stable] patch 'net/mlx5: remove unsupported flow item MPLS over IP' has been queued to stable release 20.11.3

[luca.boccassi at gmail.com]

Hi,

FYI, your patch has been queued to stable release 20.11.3

Note it hasn't been pushed to http://dpdk.org/browse/dpdk-stable yet.
It will be pushed if I get no objections before 07/14/21. 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/bluca/dpdk-stable

This queued commit can be viewed at:
https://github.com/bluca/dpdk-stable/commit/c66f74e42606307ac3303bfea3cb0f69cc794ddf

Thanks.

Luca Boccassi

---
>From c66f74e42606307ac3303bfea3cb0f69cc794ddf Mon Sep 17 00:00:00 2001
From: Xiaoyu Min <jackmin at nvidia.com>
Date: Fri, 2 Jul 2021 16:34:46 +0800
Subject: [PATCH] net/mlx5: remove unsupported flow item MPLS over IP

[ upstream commit 14ad99d78a466bd5fb796cb9c147d2a315cbe318 ]

HW doesn't support match MPLS over IP traffic.

Remove related code.

Fixes: d1abe664ddde ("net/mlx5: add MPLS to Direct Verbs flow engine")

Signed-off-by: Xiaoyu Min <jackmin at nvidia.com>
Acked-by: Matan Azrad <matan at nvidia.com>
---
 drivers/net/mlx5/mlx5_flow.c    | 5 ++---
 drivers/net/mlx5/mlx5_flow_dv.c | 3 ---
 2 files changed, 2 insertions(+), 6 deletions(-)

diff --git a/drivers/net/mlx5/mlx5_flow.c b/drivers/net/mlx5/mlx5_flow.c
index 5e64a674d3..e11652a467 100644
--- a/drivers/net/mlx5/mlx5_flow.c
+++ b/drivers/net/mlx5/mlx5_flow.c
@@ -2700,9 +2700,8 @@ mlx5_flow_validate_item_mpls(struct rte_eth_dev *dev __rte_unused,
 					  "MPLS not supported or"
 					  " disabled in firmware"
 					  " configuration.");
-	/* MPLS over IP, UDP, GRE is allowed */
-	if (!(prev_layer & (MLX5_FLOW_LAYER_OUTER_L3 |
-			    MLX5_FLOW_LAYER_OUTER_L4_UDP |
+	/* MPLS over UDP, GRE is allowed */
+	if (!(prev_layer & (MLX5_FLOW_LAYER_OUTER_L4_UDP |
 			    MLX5_FLOW_LAYER_GRE |
 			    MLX5_FLOW_LAYER_GRE_KEY)))
 		return rte_flow_error_set(error, EINVAL,
diff --git a/drivers/net/mlx5/mlx5_flow_dv.c b/drivers/net/mlx5/mlx5_flow_dv.c
index 3dd9c0d52b..0ffbdb4ab7 100644
--- a/drivers/net/mlx5/mlx5_flow_dv.c
+++ b/drivers/net/mlx5/mlx5_flow_dv.c
@@ -7349,9 +7349,6 @@ flow_dv_translate_item_mpls(void *matcher, void *key,
 			 RTE_ETHER_TYPE_MPLS);
 		break;
 	default:
-		MLX5_SET(fte_match_set_lyr_2_4, headers_m, ip_protocol, 0xff);
-		MLX5_SET(fte_match_set_lyr_2_4, headers_v, ip_protocol,
-			 IPPROTO_MPLS);
 		break;
 	}
 	if (!in_mpls_v)
-- 
2.30.2

---
  Diff of the applied patch vs upstream commit (please double-check if non-empty:
---
--- -	2021-07-12 13:41:41.748695542 +0100
+++ 0100-net-mlx5-remove-unsupported-flow-item-MPLS-over-IP.patch	2021-07-12 13:41:36.854130193 +0100
@@ -1 +1 @@
-From 14ad99d78a466bd5fb796cb9c147d2a315cbe318 Mon Sep 17 00:00:00 2001
+From c66f74e42606307ac3303bfea3cb0f69cc794ddf Mon Sep 17 00:00:00 2001
@@ -5,0 +6,2 @@
+[ upstream commit 14ad99d78a466bd5fb796cb9c147d2a315cbe318 ]
+
@@ -11 +12,0 @@
-Cc: stable at dpdk.org
@@ -21 +22 @@
-index 667ae3fd97..dc41e8b1b7 100644
+index 5e64a674d3..e11652a467 100644
@@ -24 +25 @@
-@@ -2923,9 +2923,8 @@ mlx5_flow_validate_item_mpls(struct rte_eth_dev *dev __rte_unused,
+@@ -2700,9 +2700,8 @@ mlx5_flow_validate_item_mpls(struct rte_eth_dev *dev __rte_unused,
@@ -37 +38 @@
-index 6ffdaf188c..6c8adb3481 100644
+index 3dd9c0d52b..0ffbdb4ab7 100644
@@ -40 +41 @@
-@@ -9076,9 +9076,6 @@ flow_dv_translate_item_mpls(void *matcher, void *key,
+@@ -7349,9 +7349,6 @@ flow_dv_translate_item_mpls(void *matcher, void *key,