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// SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB
/* Copyright (c) 2020, Mellanox Technologies inc. All rights reserved. */
#include "qos.h"
#define MLX5_QOS_DEFAULT_DWRR_UID 0
bool mlx5_qos_is_supported(struct mlx5_core_dev *mdev)
{
if (!MLX5_CAP_GEN(mdev, qos))
return false;
if (!MLX5_CAP_QOS(mdev, nic_sq_scheduling))
return false;
if (!MLX5_CAP_QOS(mdev, nic_bw_share))
return false;
if (!MLX5_CAP_QOS(mdev, nic_rate_limit))
return false;
return true;
}
int mlx5_qos_max_leaf_nodes(struct mlx5_core_dev *mdev)
{
return 1 << MLX5_CAP_QOS(mdev, log_max_qos_nic_queue_group);
}
int mlx5_qos_create_leaf_node(struct mlx5_core_dev *mdev, u32 parent_id,
u32 bw_share, u32 max_avg_bw, u32 *id)
{
u32 sched_ctx[MLX5_ST_SZ_DW(scheduling_context)] = {0};
MLX5_SET(scheduling_context, sched_ctx, parent_element_id, parent_id);
MLX5_SET(scheduling_context, sched_ctx, element_type,
SCHEDULING_CONTEXT_ELEMENT_TYPE_QUEUE_GROUP);
MLX5_SET(scheduling_context, sched_ctx, bw_share, bw_share);
MLX5_SET(scheduling_context, sched_ctx, max_average_bw, max_avg_bw);
return mlx5_create_scheduling_element_cmd(mdev, SCHEDULING_HIERARCHY_NIC,
sched_ctx, id);
}
int mlx5_qos_create_inner_node(struct mlx5_core_dev *mdev, u32 parent_id,
u32 bw_share, u32 max_avg_bw, u32 *id)
{
u32 sched_ctx[MLX5_ST_SZ_DW(scheduling_context)] = {0};
void *attr;
MLX5_SET(scheduling_context, sched_ctx, parent_element_id, parent_id);
MLX5_SET(scheduling_context, sched_ctx, element_type,
SCHEDULING_CONTEXT_ELEMENT_TYPE_TSAR);
MLX5_SET(scheduling_context, sched_ctx, bw_share, bw_share);
MLX5_SET(scheduling_context, sched_ctx, max_average_bw, max_avg_bw);
attr = MLX5_ADDR_OF(scheduling_context, sched_ctx, element_attributes);
MLX5_SET(tsar_element, attr, tsar_type, TSAR_ELEMENT_TSAR_TYPE_DWRR);
return mlx5_create_scheduling_element_cmd(mdev, SCHEDULING_HIERARCHY_NIC,
sched_ctx, id);
}
int mlx5_qos_create_root_node(struct mlx5_core_dev *mdev, u32 *id)
{
return mlx5_qos_create_inner_node(mdev, MLX5_QOS_DEFAULT_DWRR_UID, 0, 0, id);
}
int mlx5_qos_update_node(struct mlx5_core_dev *mdev, u32 parent_id,
u32 bw_share, u32 max_avg_bw, u32 id)
{
u32 sched_ctx[MLX5_ST_SZ_DW(scheduling_context)] = {0};
u32 bitmask = 0;
MLX5_SET(scheduling_context, sched_ctx, parent_element_id, parent_id);
MLX5_SET(scheduling_context, sched_ctx, bw_share, bw_share);
MLX5_SET(scheduling_context, sched_ctx, max_average_bw, max_avg_bw);
bitmask |= MODIFY_SCHEDULING_ELEMENT_IN_MODIFY_BITMASK_BW_SHARE;
bitmask |= MODIFY_SCHEDULING_ELEMENT_IN_MODIFY_BITMASK_MAX_AVERAGE_BW;
return mlx5_modify_scheduling_element_cmd(mdev, SCHEDULING_HIERARCHY_NIC,
sched_ctx, id, bitmask);
}
int mlx5_qos_destroy_node(struct mlx5_core_dev *mdev, u32 id)
{
return mlx5_destroy_scheduling_element_cmd(mdev, SCHEDULING_HIERARCHY_NIC, id);
}
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