[PATCH v4] net/mlx5/hws: add check for modify-header actions

[Erez Shitrit]

Allow only actions that are currently supported.

A check for each action in the modify-header list was added to
verify that is a know action, otherwise the modify-header is
failed.

Signed-off-by: Erez Shitrit <erezsh at nvidia.com>
Reviewed-by: Alex Vesker <valex at nvidia.com>
Acked-by: Matan Azrad <matan at nvidia.com>
---
 drivers/common/mlx5/mlx5_prm.h        |  1 +
 drivers/net/mlx5/hws/mlx5dr_action.c  |  6 ++++++
 drivers/net/mlx5/hws/mlx5dr_pat_arg.c | 16 ++++++++++++++++
 drivers/net/mlx5/hws/mlx5dr_pat_arg.h |  2 ++
 4 files changed, 25 insertions(+)

diff --git a/drivers/common/mlx5/mlx5_prm.h b/drivers/common/mlx5/mlx5_prm.h
index 4b0a56f4e5..0b6dc43752 100644
--- a/drivers/common/mlx5/mlx5_prm.h
+++ b/drivers/common/mlx5/mlx5_prm.h
@@ -715,6 +715,7 @@ enum {
 	MLX5_MODIFICATION_TYPE_REMOVE = 0x5,
 	MLX5_MODIFICATION_TYPE_NOP = 0x6,
 	MLX5_MODIFICATION_TYPE_REMOVE_WORDS = 0x7,
+	MLX5_MODIFICATION_TYPE_MAX,
 };
 
 /* The field of packet to be modified. */
diff --git a/drivers/net/mlx5/hws/mlx5dr_action.c b/drivers/net/mlx5/hws/mlx5dr_action.c
index 77cf1f5132..2d93be717f 100644
--- a/drivers/net/mlx5/hws/mlx5dr_action.c
+++ b/drivers/net/mlx5/hws/mlx5dr_action.c
@@ -1603,6 +1603,12 @@ mlx5dr_action_create_modify_header(struct mlx5dr_context *ctx,
 		goto free_action;
 	}
 
+	if (!mlx5dr_pat_arg_verify_actions(pattern, pattern_sz / MLX5DR_MODIFY_ACTION_SIZE)) {
+		DR_LOG(ERR, "One of the actions is not supported\n");
+		rte_errno = EINVAL;
+		goto free_action;
+	}
+
 	if (pattern_sz / MLX5DR_MODIFY_ACTION_SIZE == 1) {
 		/* Optimize single modiy action to be used inline */
 		action->modify_header.single_action = pattern[0];
diff --git a/drivers/net/mlx5/hws/mlx5dr_pat_arg.c b/drivers/net/mlx5/hws/mlx5dr_pat_arg.c
index 6ed04dac6d..830bc08678 100644
--- a/drivers/net/mlx5/hws/mlx5dr_pat_arg.c
+++ b/drivers/net/mlx5/hws/mlx5dr_pat_arg.c
@@ -441,6 +441,22 @@ mlx5dr_arg_create_modify_header_arg(struct mlx5dr_context *ctx,
 	return 0;
 }
 
+bool mlx5dr_pat_arg_verify_actions(__be64 pattern[], uint16_t num_of_actions)
+{
+	int i;
+
+	for (i = 0; i < num_of_actions; i++) {
+		u8 action_id =
+			MLX5_GET(set_action_in, &pattern[i], action_type);
+		if (action_id >= MLX5_MODIFICATION_TYPE_MAX) {
+			DR_LOG(ERR, "Invalid action %u\n", action_id);
+			return false;
+		}
+	}
+
+	return true;
+}
+
 int mlx5dr_pat_arg_create_modify_header(struct mlx5dr_context *ctx,
 					struct mlx5dr_action *action,
 					size_t pattern_sz,
diff --git a/drivers/net/mlx5/hws/mlx5dr_pat_arg.h b/drivers/net/mlx5/hws/mlx5dr_pat_arg.h
index 92db6d6aee..ec467dbb4b 100644
--- a/drivers/net/mlx5/hws/mlx5dr_pat_arg.h
+++ b/drivers/net/mlx5/hws/mlx5dr_pat_arg.h
@@ -53,6 +53,8 @@ int mlx5dr_pat_init_pattern_cache(struct mlx5dr_pattern_cache **cache);
 
 void mlx5dr_pat_uninit_pattern_cache(struct mlx5dr_pattern_cache *cache);
 
+bool mlx5dr_pat_arg_verify_actions(__be64 pattern[], uint16_t num_of_actions);
+
 int mlx5dr_pat_arg_create_modify_header(struct mlx5dr_context *ctx,
 					struct mlx5dr_action *action,
 					size_t pattern_sz,
-- 
2.18.2