net/ixgbe: support deleting TM node

Add the support of the Traffic Management API,
rte_tm_node_delete.

Signed-off-by: Wenzhuo Lu <wenzhuo.lu@intel.com>

diff --git a/drivers/net/ixgbe/ixgbe_tm.c b/drivers/net/ixgbe/ixgbe_tm.c
index ab0df75..0aae66b 100644 (file)
--- a/drivers/net/ixgbe/ixgbe_tm.c
+++ b/drivers/net/ixgbe/ixgbe_tm.c
@@ -50,12 +50,15 @@ static int ixgbe_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 ixgbe_node_delete(struct rte_eth_dev *dev, uint32_t node_id,
+                            struct rte_tm_error *error);
 
 const struct rte_tm_ops ixgbe_tm_ops = {
        .capabilities_get = ixgbe_tm_capabilities_get,
        .shaper_profile_add = ixgbe_shaper_profile_add,
        .shaper_profile_delete = ixgbe_shaper_profile_del,
        .node_add = ixgbe_node_add,
+       .node_delete = ixgbe_node_delete,
 };
 
 int
@@ -737,3 +740,67 @@ ixgbe_node_add(struct rte_eth_dev *dev, uint32_t node_id,
 
        return 0;
 }
+
+static int
+ixgbe_node_delete(struct rte_eth_dev *dev, uint32_t node_id,
+                 struct rte_tm_error *error)
+{
+       struct ixgbe_tm_conf *tm_conf =
+               IXGBE_DEV_PRIVATE_TO_TM_CONF(dev->data->dev_private);
+       enum ixgbe_tm_node_type node_type = IXGBE_TM_NODE_TYPE_MAX;
+       struct ixgbe_tm_node *tm_node;
+
+       if (!error)
+               return -EINVAL;
+
+       /* if already committed */
+       if (tm_conf->committed) {
+               error->type = RTE_TM_ERROR_TYPE_UNSPECIFIED;
+               error->message = "already committed";
+               return -EINVAL;
+       }
+
+       if (node_id == RTE_TM_NODE_ID_NULL) {
+               error->type = RTE_TM_ERROR_TYPE_NODE_ID;
+               error->message = "invalid node id";
+               return -EINVAL;
+       }
+
+       /* check the if the node id exists */
+       tm_node = ixgbe_tm_node_search(dev, node_id, &node_type);
+       if (!tm_node) {
+               error->type = RTE_TM_ERROR_TYPE_NODE_ID;
+               error->message = "no such node";
+               return -EINVAL;
+       }
+
+       /* the node should have no child */
+       if (tm_node->reference_count) {
+               error->type = RTE_TM_ERROR_TYPE_NODE_ID;
+               error->message =
+                       "cannot delete a node which has children";
+               return -EINVAL;
+       }
+
+       /* root node */
+       if (node_type == IXGBE_TM_NODE_TYPE_PORT) {
+               tm_node->shaper_profile->reference_count--;
+               rte_free(tm_node);
+               tm_conf->root = NULL;
+               return 0;
+       }
+
+       /* TC or queue node */
+       tm_node->shaper_profile->reference_count--;
+       tm_node->parent->reference_count--;
+       if (node_type == IXGBE_TM_NODE_TYPE_TC) {
+               TAILQ_REMOVE(&tm_conf->tc_list, tm_node, node);
+               tm_conf->nb_tc_node--;
+       } else {
+               TAILQ_REMOVE(&tm_conf->queue_list, tm_node, node);
+               tm_conf->nb_queue_node--;
+       }
+       rte_free(tm_node);
+
+       return 0;
+}