patch 'net/mlx5: reject jump to root table' has been queued to stable release 20.11.5

[luca.boccassi at gmail.com]

Hi,

FYI, your patch has been queued to stable release 20.11.5

Note it hasn't been pushed to http://dpdk.org/browse/dpdk-stable yet.
It will be pushed if I get no objections before 02/20/22. 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/12eaf885f5d033b7d15fa98ba9a0d37b4b9ff9fb

Thanks.

Luca Boccassi

---
>From 12eaf885f5d033b7d15fa98ba9a0d37b4b9ff9fb Mon Sep 17 00:00:00 2001
From: Xiaoyu Min <jackmin at nvidia.com>
Date: Tue, 18 Jan 2022 19:38:50 +0800
Subject: [PATCH] net/mlx5: reject jump to root table

[ upstream commit 87b26522f7ff65375fb1d773a7f93c70bf857b96 ]

Currently root table as destination is not supported.
The jump action which finally be translated to underlying root table in
rdma-core should be rejected.

Fixes: f78f747f41d0 ("net/mlx5: allow jump to group lower than current")

Signed-off-by: Xiaoyu Min <jackmin at nvidia.com>
Acked-by: Viacheslav Ovsiienko <viacheslavo at nvidia.com>
---
 drivers/net/mlx5/mlx5_flow_dv.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/drivers/net/mlx5/mlx5_flow_dv.c b/drivers/net/mlx5/mlx5_flow_dv.c
index 977072ba32..35c87e1fc5 100644
--- a/drivers/net/mlx5/mlx5_flow_dv.c
+++ b/drivers/net/mlx5/mlx5_flow_dv.c
@@ -3977,7 +3977,7 @@ flow_dv_validate_action_jump(struct rte_eth_dev *dev,
 			     const struct rte_flow_attr *attributes,
 			     bool external, struct rte_flow_error *error)
 {
-	uint32_t target_group, table;
+	uint32_t target_group, table = 0;
 	int ret = 0;
 	struct flow_grp_info grp_info = {
 		.external = !!external,
@@ -4018,6 +4018,10 @@ flow_dv_validate_action_jump(struct rte_eth_dev *dev,
 					  RTE_FLOW_ERROR_TYPE_ACTION, NULL,
 					  "target group must be other than"
 					  " the current flow group");
+	if (table == 0)
+		return rte_flow_error_set(error, EINVAL,
+					  RTE_FLOW_ERROR_TYPE_ACTION_CONF,
+					  NULL, "root table shouldn't be destination");
 	return 0;
 }
 
-- 
2.30.2

---
  Diff of the applied patch vs upstream commit (please double-check if non-empty:
---
--- -	2022-02-18 12:37:40.527893562 +0000
+++ 0066-net-mlx5-reject-jump-to-root-table.patch	2022-02-18 12:37:37.738792992 +0000
@@ -1 +1 @@
-From 87b26522f7ff65375fb1d773a7f93c70bf857b96 Mon Sep 17 00:00:00 2001
+From 12eaf885f5d033b7d15fa98ba9a0d37b4b9ff9fb Mon Sep 17 00:00:00 2001
@@ -5,0 +6,2 @@
+[ upstream commit 87b26522f7ff65375fb1d773a7f93c70bf857b96 ]
+
@@ -11 +12,0 @@
-Cc: stable at dpdk.org
@@ -20 +21 @@
-index 18992b1e26..af90a7fd0a 100644
+index 977072ba32..35c87e1fc5 100644
@@ -23 +24 @@
-@@ -4968,7 +4968,7 @@ flow_dv_validate_action_jump(struct rte_eth_dev *dev,
+@@ -3977,7 +3977,7 @@ flow_dv_validate_action_jump(struct rte_eth_dev *dev,
@@ -32 +33 @@
-@@ -4999,6 +4999,10 @@ flow_dv_validate_action_jump(struct rte_eth_dev *dev,
+@@ -4018,6 +4018,10 @@ flow_dv_validate_action_jump(struct rte_eth_dev *dev,