net/i40e: support getting TM node capability

Add the support of the Traffic Management API,
rte_tm_node_capabilities_get.

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

diff --git a/drivers/net/i40e/i40e_tm.c b/drivers/net/i40e/i40e_tm.c
index 8a19b5e..35c3b32 100644 (file)
--- a/drivers/net/i40e/i40e_tm.c
+++ b/drivers/net/i40e/i40e_tm.c
@@ -59,6 +59,10 @@ static int i40e_level_capabilities_get(struct rte_eth_dev *dev,
                                       uint32_t level_id,
                                       struct rte_tm_level_capabilities *cap,
                                       struct rte_tm_error *error);
+static int i40e_node_capabilities_get(struct rte_eth_dev *dev,
+                                     uint32_t node_id,
+                                     struct rte_tm_node_capabilities *cap,
+                                     struct rte_tm_error *error);
 
 const struct rte_tm_ops i40e_tm_ops = {
        .capabilities_get = i40e_tm_capabilities_get,
@@ -68,6 +72,7 @@ const struct rte_tm_ops i40e_tm_ops = {
        .node_delete = i40e_node_delete,
        .node_type_get = i40e_node_type_get,
        .level_capabilities_get = i40e_level_capabilities_get,
+       .node_capabilities_get = i40e_node_capabilities_get,
 };
 
 int
@@ -790,3 +795,59 @@ i40e_level_capabilities_get(struct rte_eth_dev *dev,
 
        return 0;
 }
+
+static int
+i40e_node_capabilities_get(struct rte_eth_dev *dev,
+                          uint32_t node_id,
+                          struct rte_tm_node_capabilities *cap,
+                          struct rte_tm_error *error)
+{
+       struct i40e_hw *hw = I40E_DEV_PRIVATE_TO_HW(dev->data->dev_private);
+       enum i40e_tm_node_type node_type;
+       struct i40e_tm_node *tm_node;
+
+       if (!cap || !error)
+               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 if the node id exists */
+       tm_node = i40e_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;
+       }
+
+       cap->shaper_private_supported = true;
+       cap->shaper_private_dual_rate_supported = false;
+       cap->shaper_private_rate_min = 0;
+       /* 40Gbps -> 5GBps */
+       cap->shaper_private_rate_max = 5000000000ull;
+       cap->shaper_shared_n_max = 0;
+
+       if (node_type == I40E_TM_NODE_TYPE_QUEUE) {
+               cap->leaf.cman_head_drop_supported = false;
+               cap->leaf.cman_wred_context_private_supported = true;
+               cap->leaf.cman_wred_context_shared_n_max = 0;
+       } else {
+               if (node_type == I40E_TM_NODE_TYPE_PORT)
+                       cap->nonleaf.sched_n_children_max =
+                               I40E_MAX_TRAFFIC_CLASS;
+               else
+                       cap->nonleaf.sched_n_children_max =
+                               hw->func_caps.num_tx_qp;
+               cap->nonleaf.sched_sp_n_priorities_max = 1;
+               cap->nonleaf.sched_wfq_n_children_per_group_max = 0;
+               cap->nonleaf.sched_wfq_n_groups_max = 0;
+               cap->nonleaf.sched_wfq_weight_max = 1;
+       }
+
+       cap->stats_mask = 0;
+
+       return 0;
+}