freebsd-dev/sys/dev/mlx5/mlx5_en/port_buffer.h
Hans Petter Selasky c28ef24918 Import Linux code to query/set buffer state in mlx5en(4).
Submitted by:	kib@
MFC after:	3 days
Sponsored by:	Mellanox Technologies
2019-10-02 10:05:34 +00:00

83 lines
2.6 KiB
C

/*-
* Copyright (c) 2018 Mellanox Technologies. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. 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.
*
* THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS `AS IS' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $FreeBSD$
*/
#ifndef __MLX5_EN_PORT_BUFFER_H__
#define __MLX5_EN_PORT_BUFFER_H__
#include "en.h"
#include <dev/mlx5/port.h>
#define MLX5E_MAX_BUFFER 8
#define MLX5E_BUFFER_CELL_SHIFT 7
#define MLX5E_DEFAULT_CABLE_LEN 7 /* 7 meters */
#define MLX5_BUFFER_SUPPORTED(mdev) (MLX5_CAP_GEN(mdev, pcam_reg) && \
MLX5_CAP_PCAM_REG(mdev, pbmc) && \
MLX5_CAP_PCAM_REG(mdev, pptb))
enum {
MLX5E_PORT_BUFFER_CABLE_LEN = BIT(0),
MLX5E_PORT_BUFFER_PFC = BIT(1),
MLX5E_PORT_BUFFER_PRIO2BUFFER = BIT(2),
MLX5E_PORT_BUFFER_SIZE = BIT(3),
};
struct mlx5e_bufferx_reg {
u8 lossy;
u8 epsb;
u32 size;
u32 xoff;
u32 xon;
};
struct mlx5e_port_buffer {
u32 port_buffer_size;
u32 spare_buffer_size;
struct mlx5e_bufferx_reg buffer[MLX5E_MAX_BUFFER];
};
#define IEEE_8021QAZ_MAX_TCS 8
struct ieee_pfc {
__u8 pfc_cap;
__u8 pfc_en;
__u8 mbc;
__u16 delay;
__u64 requests[IEEE_8021QAZ_MAX_TCS];
__u64 indications[IEEE_8021QAZ_MAX_TCS];
};
int mlx5e_port_manual_buffer_config(struct mlx5e_priv *priv,
u32 change, unsigned int mtu,
struct ieee_pfc *pfc,
u32 *buffer_size,
u8 *prio2buffer);
int mlx5e_port_query_buffer(struct mlx5e_priv *priv,
struct mlx5e_port_buffer *port_buffer);
#endif