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