[PATCH 2/9] net/mlx5: add flex item query tunnel mode routine

[Viacheslav Ovsiienko <viacheslavo@nvidia.com>]

Once parsing the RTE item array the PMD needs to know
whether the flex item represents the tunnel header.
The appropriate tunnel mode query API is added.

Signed-off-by: Viacheslav Ovsiienko <viacheslavo@nvidia.com>
---
 drivers/net/mlx5/mlx5.h           |  2 ++
 drivers/net/mlx5/mlx5_flow_flex.c | 27 +++++++++++++++++++++++++++
 2 files changed, 29 insertions(+)

diff --git a/drivers/net/mlx5/mlx5.h b/drivers/net/mlx5/mlx5.h
index 869aac032b..6d163996e4 100644
--- a/drivers/net/mlx5/mlx5.h
+++ b/drivers/net/mlx5/mlx5.h
@@ -2605,6 +2605,8 @@ int mlx5_flex_get_sample_id(const struct mlx5_flex_item *tp,
 int mlx5_flex_get_parser_value_per_byte_off(const struct rte_flow_item_flex *item,
 					    void *flex, uint32_t byte_off,
 					    bool is_mask, bool tunnel, uint32_t *value);
+int mlx5_flex_get_tunnel_mode(const struct rte_flow_item *item,
+			      enum rte_flow_item_flex_tunnel_mode *tunnel_mode);
 int mlx5_flex_acquire_index(struct rte_eth_dev *dev,
 			    struct rte_flow_item_flex_handle *handle,
 			    bool acquire);
diff --git a/drivers/net/mlx5/mlx5_flow_flex.c b/drivers/net/mlx5/mlx5_flow_flex.c
index 5b104d583c..0c41b956b0 100644
--- a/drivers/net/mlx5/mlx5_flow_flex.c
+++ b/drivers/net/mlx5/mlx5_flow_flex.c
@@ -291,6 +291,33 @@ mlx5_flex_get_parser_value_per_byte_off(const struct rte_flow_item_flex *item,
 	return 0;
 }
 
+/**
+ * Get the flex parser tunnel mode.
+ *
+ * @param[in] item
+ *   RTE Flex item.
+ * @param[in, out] tunnel_mode
+ *   Pointer to return tunnel mode.
+ *
+ * @return
+ *   0 on success, otherwise negative error code.
+ */
+int
+mlx5_flex_get_tunnel_mode(const struct rte_flow_item *item,
+			  enum rte_flow_item_flex_tunnel_mode *tunnel_mode)
+{
+	if (item && item->spec && tunnel_mode) {
+		const struct rte_flow_item_flex *spec = item->spec;
+		struct mlx5_flex_item *flex = (struct mlx5_flex_item *)spec->handle;
+
+		if (flex) {
+			*tunnel_mode = flex->tunnel_mode;
+			return 0;
+		}
+	}
+	return -EINVAL;
+}
+
 /**
  * Translate item pattern into matcher fields according to translation
  * array.
-- 
2.34.1