[PATCH v3 2/3] net/ice: add traffic management node query function

[Bruce Richardson <bruce.richardson@intel.com>]

Implement the new node querying function for the "ice" net driver.

Signed-off-by: Bruce Richardson <bruce.richardson@intel.com>
---
 drivers/net/ice/ice_tm.c | 52 ++++++++++++++++++++++++++++++++++++++++
 1 file changed, 52 insertions(+)

diff --git a/drivers/net/ice/ice_tm.c b/drivers/net/ice/ice_tm.c
index 7239ab53f1..35bc26ad47 100644
--- a/drivers/net/ice/ice_tm.c
+++ b/drivers/net/ice/ice_tm.c
@@ -17,6 +17,11 @@ static int ice_tm_node_add(struct rte_eth_dev *dev, uint32_t node_id,
 	      uint32_t weight, uint32_t level_id,
 	      struct rte_tm_node_params *params,
 	      struct rte_tm_error *error);
+static int ice_node_query(const struct rte_eth_dev *dev, uint32_t node_id,
+		uint32_t *parent_node_id, uint32_t *priority,
+		uint32_t *weight, uint32_t *level_id,
+		struct rte_tm_node_params *params,
+		struct rte_tm_error *error);
 static int ice_tm_node_delete(struct rte_eth_dev *dev, uint32_t node_id,
 			    struct rte_tm_error *error);
 static int ice_node_type_get(struct rte_eth_dev *dev, uint32_t node_id,
@@ -35,6 +40,7 @@ const struct rte_tm_ops ice_tm_ops = {
 	.node_add = ice_tm_node_add,
 	.node_delete = ice_tm_node_delete,
 	.node_type_get = ice_node_type_get,
+	.node_query = ice_node_query,
 	.hierarchy_commit = ice_hierarchy_commit,
 };
 
@@ -219,6 +225,52 @@ ice_node_type_get(struct rte_eth_dev *dev, uint32_t node_id,
 	return 0;
 }
 
+static int
+ice_node_query(const struct rte_eth_dev *dev, uint32_t node_id,
+		uint32_t *parent_node_id, uint32_t *priority,
+		uint32_t *weight, uint32_t *level_id,
+		struct rte_tm_node_params *params,
+		struct rte_tm_error *error)
+{
+	struct ice_pf *pf = ICE_DEV_PRIVATE_TO_PF(dev->data->dev_private);
+	struct ice_tm_node *tm_node;
+
+	if (node_id == RTE_TM_NODE_ID_NULL) {
+		error->type = RTE_TM_ERROR_TYPE_NODE_ID;
+		error->message = "invalid node id";
+		return -EINVAL;
+	}
+
+	/* check if the node id exists */
+	tm_node = find_node(pf->tm_conf.root, node_id);
+	if (!tm_node) {
+		error->type = RTE_TM_ERROR_TYPE_NODE_ID;
+		error->message = "no such node";
+		return -EEXIST;
+	}
+
+	if (parent_node_id != NULL) {
+		if (tm_node->parent != NULL)
+			*parent_node_id = tm_node->parent->id;
+		else
+			*parent_node_id = RTE_TM_NODE_ID_NULL;
+	}
+
+	if (priority != NULL)
+		*priority = tm_node->priority;
+
+	if (weight != NULL)
+		*weight = tm_node->weight;
+
+	if (level_id != NULL)
+		*level_id = tm_node->level;
+
+	if (params != NULL)
+		*params = tm_node->params;
+
+	return 0;
+}
+
 static inline struct ice_tm_shaper_profile *
 ice_shaper_profile_search(struct rte_eth_dev *dev,
 			   uint32_t shaper_profile_id)
-- 
2.43.0