[dpdk-stable] patch 'net/mlx5: fix unnecessary checking for RSS action' has been queued to stable release 20.11.1

[luca.boccassi at gmail.com]

Hi,

FYI, your patch has been queued to stable release 20.11.1

Note it hasn't been pushed to http://dpdk.org/browse/dpdk-stable yet.
It will be pushed if I get no objections before 02/07/21. 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/27250328c7b66146b45f997831dfdce2ce3f10be

Thanks.

Luca Boccassi

---
>From 27250328c7b66146b45f997831dfdce2ce3f10be Mon Sep 17 00:00:00 2001
From: Jiawei Wang <jiaweiw at nvidia.com>
Date: Thu, 14 Jan 2021 09:24:46 +0200
Subject: [PATCH] net/mlx5: fix unnecessary checking for RSS action

[ upstream commit 6c2a3a90496527affc566bda518b8c33908b00d2 ]

RSS action is valid only in NIC-RX domain, this fix bypass
the function that getting RSS action from the flow action list
under no NIC-RX domain.

Fixes: e745f900072e ("net/mlx5: optimize flow RSS struct")

Signed-off-by: Jiawei Wang <jiaweiw at nvidia.com>
Acked-by: Viacheslav Ovsiienko <viacheslavo at nvidia.com>
---
 drivers/net/mlx5/mlx5_flow.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/drivers/net/mlx5/mlx5_flow.c b/drivers/net/mlx5/mlx5_flow.c
index bceecdb902..ba9a90210f 100644
--- a/drivers/net/mlx5/mlx5_flow.c
+++ b/drivers/net/mlx5/mlx5_flow.c
@@ -5268,7 +5268,7 @@ flow_list_create(struct rte_eth_dev *dev, uint32_t *list,
 	struct mlx5_priv *priv = dev->data->dev_private;
 	struct rte_flow *flow = NULL;
 	struct mlx5_flow *dev_flow;
-	const struct rte_flow_action_rss *rss;
+	const struct rte_flow_action_rss *rss = NULL;
 	struct mlx5_translated_shared_action
 		shared_actions[MLX5_MAX_SHARED_ACTIONS];
 	int shared_actions_n = MLX5_MAX_SHARED_ACTIONS;
@@ -5346,7 +5346,9 @@ flow_list_create(struct rte_eth_dev *dev, uint32_t *list,
 	MLX5_ASSERT(flow->drv_type > MLX5_FLOW_TYPE_MIN &&
 		    flow->drv_type < MLX5_FLOW_TYPE_MAX);
 	memset(rss_desc, 0, offsetof(struct mlx5_flow_rss_desc, queue));
-	rss = flow_get_rss_action(p_actions_rx);
+	/* RSS Action only works on NIC RX domain */
+	if (attr->ingress && !attr->transfer)
+		rss = flow_get_rss_action(p_actions_rx);
 	if (rss) {
 		if (flow_rss_workspace_adjust(wks, rss_desc, rss->queue_num))
 			return 0;
-- 
2.29.2

---
  Diff of the applied patch vs upstream commit (please double-check if non-empty:
---
--- -	2021-02-05 11:18:37.074307884 +0000
+++ 0175-net-mlx5-fix-unnecessary-checking-for-RSS-action.patch	2021-02-05 11:18:29.138697432 +0000
@@ -1 +1 @@
-From 6c2a3a90496527affc566bda518b8c33908b00d2 Mon Sep 17 00:00:00 2001
+From 27250328c7b66146b45f997831dfdce2ce3f10be Mon Sep 17 00:00:00 2001
@@ -5,0 +6,2 @@
+[ upstream commit 6c2a3a90496527affc566bda518b8c33908b00d2 ]
+
@@ -11 +12,0 @@
-Cc: stable at dpdk.org
@@ -20 +21 @@
-index 3c4ef6d7d2..e656ad6cd6 100644
+index bceecdb902..ba9a90210f 100644
@@ -23 +24 @@
-@@ -5416,7 +5416,7 @@ flow_list_create(struct rte_eth_dev *dev, uint32_t *list,
+@@ -5268,7 +5268,7 @@ flow_list_create(struct rte_eth_dev *dev, uint32_t *list,
@@ -32 +33 @@
-@@ -5494,7 +5494,9 @@ flow_list_create(struct rte_eth_dev *dev, uint32_t *list,
+@@ -5346,7 +5346,9 @@ flow_list_create(struct rte_eth_dev *dev, uint32_t *list,