From 2b546d23b86a00c4bdfefc145913c2e44834aa56 Mon Sep 17 00:00:00 2001 From: Wenzhuo Lu Date: Thu, 29 Jun 2017 12:23:39 +0800 Subject: [PATCH] net/i40e: support getting TM capability Add the support of the Traffic Management API, rte_tm_capabilities_get. Signed-off-by: Wenzhuo Lu --- drivers/net/i40e/i40e_tm.c | 88 +++++++++++++++++++++++++++++++++++++- 1 file changed, 87 insertions(+), 1 deletion(-) diff --git a/drivers/net/i40e/i40e_tm.c b/drivers/net/i40e/i40e_tm.c index 2f4c86613c..9fc2f453e8 100644 --- a/drivers/net/i40e/i40e_tm.c +++ b/drivers/net/i40e/i40e_tm.c @@ -34,8 +34,12 @@ #include "base/i40e_prototype.h" #include "i40e_ethdev.h" +static int i40e_tm_capabilities_get(struct rte_eth_dev *dev, + struct rte_tm_capabilities *cap, + struct rte_tm_error *error); + const struct rte_tm_ops i40e_tm_ops = { - NULL, + .capabilities_get = i40e_tm_capabilities_get, }; int @@ -49,3 +53,85 @@ i40e_tm_ops_get(struct rte_eth_dev *dev __rte_unused, return 0; } + +static inline uint16_t +i40e_tc_nb_get(struct rte_eth_dev *dev) +{ + struct i40e_pf *pf = I40E_DEV_PRIVATE_TO_PF(dev->data->dev_private); + struct i40e_vsi *main_vsi = pf->main_vsi; + uint16_t sum = 0; + int i; + + for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) { + if (main_vsi->enabled_tc & BIT_ULL(i)) + sum++; + } + + return sum; +} + +static int +i40e_tm_capabilities_get(struct rte_eth_dev *dev, + struct rte_tm_capabilities *cap, + struct rte_tm_error *error) +{ + struct i40e_hw *hw = I40E_DEV_PRIVATE_TO_HW(dev->data->dev_private); + uint16_t tc_nb = i40e_tc_nb_get(dev); + + if (!cap || !error) + return -EINVAL; + + if (tc_nb > hw->func_caps.num_tx_qp) + return -EINVAL; + + error->type = RTE_TM_ERROR_TYPE_NONE; + + /* set all the parameters to 0 first. */ + memset(cap, 0, sizeof(struct rte_tm_capabilities)); + + /** + * support port + TCs + queues + * here shows the max capability not the current configuration. + */ + cap->n_nodes_max = 1 + I40E_MAX_TRAFFIC_CLASS + hw->func_caps.num_tx_qp; + cap->n_levels_max = 3; /* port, TC, queue */ + 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; + /* 40Gbps -> 5GBps */ + cap->shaper_private_rate_max = 5000000000ull; + 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->func_caps.num_tx_qp; + /** + * 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; +} -- 2.20.1