linux/drivers/infiniband/hw/mlx5/cong.c

/*
 * Copyright (c) 2013-2017, 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/debugfs.h>

#include "mlx5_ib.h"
#include "cmd.h"

enum mlx5_ib_cong_node_type { … };

static const char * const mlx5_ib_dbg_cc_name[] = …;

#define MLX5_IB_RP_CLAMP_TGT_RATE_ATTR …
#define MLX5_IB_RP_CLAMP_TGT_RATE_ATI_ATTR …
#define MLX5_IB_RP_TIME_RESET_ATTR …
#define MLX5_IB_RP_BYTE_RESET_ATTR …
#define MLX5_IB_RP_THRESHOLD_ATTR …
#define MLX5_IB_RP_MAX_RATE_ATTR …
#define MLX5_IB_RP_AI_RATE_ATTR …
#define MLX5_IB_RP_HAI_RATE_ATTR …
#define MLX5_IB_RP_MIN_DEC_FAC_ATTR …
#define MLX5_IB_RP_MIN_RATE_ATTR …
#define MLX5_IB_RP_RATE_TO_SET_ON_FIRST_CNP_ATTR …
#define MLX5_IB_RP_DCE_TCP_G_ATTR …
#define MLX5_IB_RP_DCE_TCP_RTT_ATTR …
#define MLX5_IB_RP_RATE_REDUCE_MONITOR_PERIOD_ATTR …
#define MLX5_IB_RP_INITIAL_ALPHA_VALUE_ATTR …
#define MLX5_IB_RP_GD_ATTR …

#define MLX5_IB_NP_MIN_TIME_BETWEEN_CNPS_ATTR …
#define MLX5_IB_NP_CNP_DSCP_ATTR …
#define MLX5_IB_NP_CNP_PRIO_MODE_ATTR …

#define MLX5_IB_GENERAL_RTT_RESP_DSCP_ATTR …

static enum mlx5_ib_cong_node_type
mlx5_ib_param_to_node(enum mlx5_ib_dbg_cc_types param_offset)
{ … }

static u32 mlx5_get_cc_param_val(void *field, int offset)
{ … }

static void mlx5_ib_set_cc_param_mask_val(void *field, int offset,
					  u32 var, u32 *attr_mask)
{ … }

static int mlx5_ib_get_cc_params(struct mlx5_ib_dev *dev, u32 port_num,
				 int offset, u32 *var)
{ … }

static int mlx5_ib_set_cc_params(struct mlx5_ib_dev *dev, u32 port_num,
				 int offset, u32 var)
{ … }

static ssize_t set_param(struct file *filp, const char __user *buf,
			 size_t count, loff_t *pos)
{ … }

static ssize_t get_param(struct file *filp, char __user *buf, size_t count,
			 loff_t *pos)
{ … }

static const struct file_operations dbg_cc_fops = …;

void mlx5_ib_cleanup_cong_debugfs(struct mlx5_ib_dev *dev, u32 port_num)
{ … }

void mlx5_ib_init_cong_debugfs(struct mlx5_ib_dev *dev, u32 port_num)
{ … }