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net/i40e: support getting TM capability

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Add the support of the Traffic Management API,
rte_tm_capabilities_get.

Signed-off-by: Wenzhuo Lu <wenzhuo.lu@intel.com>
This commit is contained in:
Wenzhuo Lu 2017-06-29 12:23:39 +08:00 committed by Cristian Dumitrescu
parent b979301340
commit 2b546d23b8
1 changed files with 87 additions and 1 deletions
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88
drivers/net/i40e/i40e_tm.c
View File

@ -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;
}