net/ixgbe: support getting TM capability

Add the support of the Traffic Management API,
rte_tm_capabilities_get.

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 0a222a1..f47a60d 100644 (file)
--- a/drivers/net/ixgbe/ixgbe_tm.c
+++ b/drivers/net/ixgbe/ixgbe_tm.c
@@ -33,8 +33,12 @@
 
 #include "ixgbe_ethdev.h"
 
+static int ixgbe_tm_capabilities_get(struct rte_eth_dev *dev,
+                                    struct rte_tm_capabilities *cap,
+                                    struct rte_tm_error *error);
+
 const struct rte_tm_ops ixgbe_tm_ops = {
-       NULL,
+       .capabilities_get = ixgbe_tm_capabilities_get,
 };
 
 int
@@ -48,3 +52,92 @@ ixgbe_tm_ops_get(struct rte_eth_dev *dev __rte_unused,
 
        return 0;
 }
+
+static inline uint8_t
+ixgbe_tc_nb_get(struct rte_eth_dev *dev)
+{
+       struct rte_eth_conf *eth_conf;
+       uint8_t nb_tcs = 0;
+
+       eth_conf = &dev->data->dev_conf;
+       if (eth_conf->txmode.mq_mode == ETH_MQ_TX_DCB) {
+               nb_tcs = eth_conf->tx_adv_conf.dcb_tx_conf.nb_tcs;
+       } else if (eth_conf->txmode.mq_mode == ETH_MQ_TX_VMDQ_DCB) {
+               if (eth_conf->tx_adv_conf.vmdq_dcb_tx_conf.nb_queue_pools ==
+                   ETH_32_POOLS)
+                       nb_tcs = ETH_4_TCS;
+               else
+                       nb_tcs = ETH_8_TCS;
+       } else {
+               nb_tcs = 1;
+       }
+
+       return nb_tcs;
+}
+
+static int
+ixgbe_tm_capabilities_get(struct rte_eth_dev *dev,
+                         struct rte_tm_capabilities *cap,
+                         struct rte_tm_error *error)
+{
+       struct ixgbe_hw *hw = IXGBE_DEV_PRIVATE_TO_HW(dev->data->dev_private);
+       uint8_t tc_nb = ixgbe_tc_nb_get(dev);
+
+       if (!cap || !error)
+               return -EINVAL;
+
+       if (tc_nb > hw->mac.max_tx_queues)
+               return -EINVAL;
+
+       error->type = RTE_TM_ERROR_TYPE_NONE;
+
+       /* set all the parameters to 0 first. */
+       memset(cap, 0, sizeof(struct rte_tm_capabilities));
+
+       /**
+        * here is the max capability not the current configuration.
+        */
+       /* port + TCs + queues */
+       cap->n_nodes_max = 1 + IXGBE_DCB_MAX_TRAFFIC_CLASS +
+                          hw->mac.max_tx_queues;
+       cap->n_levels_max = 3;
+       cap->non_leaf_nodes_identical = 1;
+       cap->leaf_nodes_identical = 1;
+       cap->shaper_n_max = cap->n_nodes_max;
+       cap->shaper_private_n_max = cap->n_nodes_max;
+       cap->shaper_private_dual_rate_n_max = 0;
+       cap->shaper_private_rate_min = 0;
+       /* 10Gbps -> 1.25GBps */
+       cap->shaper_private_rate_max = 1250000000ull;
+       cap->shaper_shared_n_max = 0;
+       cap->shaper_shared_n_nodes_per_shaper_max = 0;
+       cap->shaper_shared_n_shapers_per_node_max = 0;
+       cap->shaper_shared_dual_rate_n_max = 0;
+       cap->shaper_shared_rate_min = 0;
+       cap->shaper_shared_rate_max = 0;
+       cap->sched_n_children_max = hw->mac.max_tx_queues;
+       /**
+        * HW supports SP. But no plan to support it now.
+        * So, all the nodes should have the same priority.
+        */
+       cap->sched_sp_n_priorities_max = 1;
+       cap->sched_wfq_n_children_per_group_max = 0;
+       cap->sched_wfq_n_groups_max = 0;
+       /**
+        * SW only supports fair round robin now.
+        * So, all the nodes should have the same weight.
+        */
+       cap->sched_wfq_weight_max = 1;
+       cap->cman_head_drop_supported = 0;
+       cap->dynamic_update_mask = 0;
+       cap->shaper_pkt_length_adjust_min = RTE_TM_ETH_FRAMING_OVERHEAD;
+       cap->shaper_pkt_length_adjust_max = RTE_TM_ETH_FRAMING_OVERHEAD_FCS;
+       cap->cman_wred_context_n_max = 0;
+       cap->cman_wred_context_private_n_max = 0;
+       cap->cman_wred_context_shared_n_max = 0;
+       cap->cman_wred_context_shared_n_nodes_per_context_max = 0;
+       cap->cman_wred_context_shared_n_contexts_per_node_max = 0;
+       cap->stats_mask = 0;
+
+       return 0;
+}