[PATCH 1/2] net/mlx5: fix non template flow validation on validate

[Maayan Kashani <mkashani@nvidia.com>]

For non template API on top of HWS,
it’s validation function pointed to SWS legacy validation function,
which does not match HWS restrictions.

Added HWS validation function for non template rules.

Fixes: e38776c36c8a ("net/mlx5: introduce HWS for non-template flow API")
Cc: stable@dpdk.org

Signed-off-by: Maayan Kashani <mkashani@nvidia.com>
Acked-by: Dariusz Sosnowski <dsosnowski@nvidia.com>
---
 drivers/net/mlx5/mlx5_flow_hw.c | 56 ++++++++++++++++++++++++++++++++-
 1 file changed, 55 insertions(+), 1 deletion(-)

diff --git a/drivers/net/mlx5/mlx5_flow_hw.c b/drivers/net/mlx5/mlx5_flow_hw.c
index 03cbf53f492..9efe41b1127 100644
--- a/drivers/net/mlx5/mlx5_flow_hw.c
+++ b/drivers/net/mlx5/mlx5_flow_hw.c
@@ -210,6 +210,13 @@ flow_hw_allocate_actions(struct rte_eth_dev *dev,
 			 uint64_t action_flags,
 			 struct rte_flow_error *error);
 
+static int
+flow_hw_validate(struct rte_eth_dev *dev, const struct rte_flow_attr *attr,
+		 const struct rte_flow_item items[],
+		 const struct rte_flow_action actions[],
+		 bool external __rte_unused, int hairpin __rte_unused,
+		 struct rte_flow_error *error);
+
 bool
 mlx5_hw_ctx_validate(const struct rte_eth_dev *dev, struct rte_flow_error *error)
 {
@@ -15385,10 +15392,57 @@ flow_hw_update_resized(struct rte_eth_dev *dev, uint32_t queue,
 	return 0;
 }
 
+/**
+ * Internal validation function. For validating both actions and items.
+ *
+ * @param[in] dev
+ *   Pointer to the rte_eth_dev structure.
+ * @param[in] attr
+ *   Pointer to the flow attributes.
+ * @param[in] items
+ *   Pointer to the list of items.
+ * @param[in] actions
+ *   Pointer to the list of actions.
+ * @param[in] external
+ *   This flow rule is created by request external to PMD.
+ * @param[in] hairpin
+ *   Number of hairpin TX actions, 0 means classic flow.
+ * @param[out] error
+ *   Pointer to the error structure.
+ *
+ * @return
+ *   0 on success, a negative errno value otherwise and rte_errno is set.
+ */
+static int
+flow_hw_validate(struct rte_eth_dev *dev, const struct rte_flow_attr *attr,
+		 const struct rte_flow_item items[],
+		 const struct rte_flow_action actions[] __rte_unused,
+		 bool external, int hairpin __rte_unused,
+		 struct rte_flow_error *error)
+{
+	const struct rte_flow_pattern_template_attr pattern_template_attr = {
+		.relaxed_matching = 0,
+		.ingress = attr->ingress,
+		.egress = attr->egress,
+		.transfer = attr->transfer,
+	};
+	uint64_t item_flags = 0;
+	int ret = 0;
+
+	if (external) {
+		/* Validate application items only */
+		ret = flow_hw_pattern_validate(dev, &pattern_template_attr, items,
+						    &item_flags, error);
+		if (ret < 0)
+			return -rte_errno;
+	}
+	return 0;
+}
+
 const struct mlx5_flow_driver_ops mlx5_flow_hw_drv_ops = {
 	.list_create = flow_hw_list_create,
 	.list_destroy = flow_hw_list_destroy,
-	.validate = flow_dv_validate,
+	.validate = flow_hw_validate,
 	.info_get = flow_hw_info_get,
 	.configure = flow_hw_configure,
 	.pattern_validate = flow_hw_pattern_validate,
-- 
2.21.0