linux/drivers/net/ethernet/mellanox/mlx5/core/rl.c

/*
 * Copyright (c) 2013-2016, Mellanox Technologies. All rights reserved.
 *
 * This software is available to you under a choice of one of two
 * licenses.  You may choose to be licensed under the terms of the GNU
 * General Public License (GPL) Version 2, available from the file
 * COPYING in the main directory of this source tree, or the
 * OpenIB.org BSD license below:
 *
 *     Redistribution and use in source and binary forms, with or
 *     without modification, are permitted provided that the following
 *     conditions are met:
 *
 *      - Redistributions of source code must retain the above
 *        copyright notice, this list of conditions and the following
 *        disclaimer.
 *
 *      - Redistributions in binary form must reproduce the above
 *        copyright notice, this list of conditions and the following
 *        disclaimer in the documentation and/or other materials
 *        provided with the distribution.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */

#include <linux/kernel.h>
#include <linux/mlx5/driver.h>
#include "mlx5_core.h"

/* Scheduling element fw management */
int mlx5_create_scheduling_element_cmd(struct mlx5_core_dev *dev, u8 hierarchy,
				       void *ctx, u32 *element_id)
{ … }

int mlx5_modify_scheduling_element_cmd(struct mlx5_core_dev *dev, u8 hierarchy,
				       void *ctx, u32 element_id,
				       u32 modify_bitmask)
{ … }

int mlx5_destroy_scheduling_element_cmd(struct mlx5_core_dev *dev, u8 hierarchy,
					u32 element_id)
{ … }

static bool mlx5_rl_are_equal_raw(struct mlx5_rl_entry *entry, void *rl_in,
				  u16 uid)
{ … }

/* Finds an entry where we can register the given rate
 * If the rate already exists, return the entry where it is registered,
 * otherwise return the first available entry.
 * If the table is full, return NULL
 */
static struct mlx5_rl_entry *find_rl_entry(struct mlx5_rl_table *table,
					   void *rl_in, u16 uid, bool dedicated)
{ … }

static int mlx5_set_pp_rate_limit_cmd(struct mlx5_core_dev *dev,
				      struct mlx5_rl_entry *entry, bool set)
{ … }

bool mlx5_rl_is_in_range(struct mlx5_core_dev *dev, u32 rate)
{ … }
EXPORT_SYMBOL(…);

bool mlx5_rl_are_equal(struct mlx5_rate_limit *rl_0,
		       struct mlx5_rate_limit *rl_1)
{ … }
EXPORT_SYMBOL(…);

static int mlx5_rl_table_get(struct mlx5_rl_table *table)
{ … }

static void mlx5_rl_table_put(struct mlx5_rl_table *table)
{ … }

static void mlx5_rl_table_free(struct mlx5_core_dev *dev, struct mlx5_rl_table *table)
{ … }

static void mlx5_rl_entry_get(struct mlx5_rl_entry *entry)
{ … }

static void
mlx5_rl_entry_put(struct mlx5_core_dev *dev, struct mlx5_rl_entry *entry)
{ … }

int mlx5_rl_add_rate_raw(struct mlx5_core_dev *dev, void *rl_in, u16 uid,
			 bool dedicated_entry, u16 *index)
{ … }
EXPORT_SYMBOL(…);

void mlx5_rl_remove_rate_raw(struct mlx5_core_dev *dev, u16 index)
{ … }
EXPORT_SYMBOL(…);

int mlx5_rl_add_rate(struct mlx5_core_dev *dev, u16 *index,
		     struct mlx5_rate_limit *rl)
{ … }
EXPORT_SYMBOL(…);

void mlx5_rl_remove_rate(struct mlx5_core_dev *dev, struct mlx5_rate_limit *rl)
{ … }
EXPORT_SYMBOL(…);

int mlx5_init_rl_table(struct mlx5_core_dev *dev)
{ … }

void mlx5_cleanup_rl_table(struct mlx5_core_dev *dev)
{ … }