Commit 75a54396 authored by Tariq Toukan's avatar Tariq Toukan Committed by Saeed Mahameed
Browse files

net/mlx5: SD, Introduce SD lib 



Add Socket-Direct API with empty/minimal implementation.
We fill-in the implementation gradually in downstream patches.

Signed-off-by: default avatarTariq Toukan <tariqt@nvidia.com>
Reviewed-by: default avatarGal Pressman <gal@nvidia.com>
Signed-off-by: default avatarSaeed Mahameed <saeedm@nvidia.com>
parent a0873a5d

drivers/net/ethernet/mellanox/mlx5/core/Makefile

+1 −1
Original line number Diff line number Diff line
@@ -29,7 +29,7 @@ mlx5_core-$(CONFIG_MLX5_CORE_EN) += en/rqt.o en/tir.o en/rss.o en/rx_res.o \ 
		en/reporter_tx.o en/reporter_rx.o en/params.o en/xsk/pool.o \

		en/xsk/setup.o en/xsk/rx.o en/xsk/tx.o en/devlink.o en/ptp.o \

		en/qos.o en/htb.o en/trap.o en/fs_tt_redirect.o en/selq.o \

		lib/crypto.o

		lib/crypto.o lib/sd.o



#

# Netdev extra

drivers/net/ethernet/mellanox/mlx5/core/lib/mlx5.h

+11 −0
Original line number Diff line number Diff line
@@ -54,4 +54,15 @@ static inline struct net_device *mlx5_uplink_netdev_get(struct mlx5_core_dev *md 
{

	return mdev->mlx5e_res.uplink_netdev;

}



struct mlx5_sd;



static inline struct mlx5_sd *mlx5_get_sd(struct mlx5_core_dev *dev)

{

	return NULL;

}



static inline void mlx5_set_sd(struct mlx5_core_dev *dev, struct mlx5_sd *sd)

{

}

#endif

drivers/net/ethernet/mellanox/mlx5/core/lib/sd.c

0 → 100644
+60 −0
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// SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB

/* Copyright (c) 2023, NVIDIA CORPORATION & AFFILIATES. All rights reserved. */



#include "lib/sd.h"

#include "mlx5_core.h"



#define sd_info(__dev, format, ...) \

	dev_info((__dev)->device, "Socket-Direct: " format, ##__VA_ARGS__)

#define sd_warn(__dev, format, ...) \

	dev_warn((__dev)->device, "Socket-Direct: " format, ##__VA_ARGS__)



struct mlx5_sd {

};



static int mlx5_sd_get_host_buses(struct mlx5_core_dev *dev)

{

	return 1;

}



struct mlx5_core_dev *

mlx5_sd_primary_get_peer(struct mlx5_core_dev *primary, int idx)

{

	if (idx == 0)

		return primary;



	return NULL;

}



int mlx5_sd_ch_ix_get_dev_ix(struct mlx5_core_dev *dev, int ch_ix)

{

	return ch_ix % mlx5_sd_get_host_buses(dev);

}



int mlx5_sd_ch_ix_get_vec_ix(struct mlx5_core_dev *dev, int ch_ix)

{

	return ch_ix / mlx5_sd_get_host_buses(dev);

}



struct mlx5_core_dev *mlx5_sd_ch_ix_get_dev(struct mlx5_core_dev *primary, int ch_ix)

{

	int mdev_idx = mlx5_sd_ch_ix_get_dev_ix(primary, ch_ix);



	return mlx5_sd_primary_get_peer(primary, mdev_idx);

}



int mlx5_sd_init(struct mlx5_core_dev *dev)

{

	return 0;

}



void mlx5_sd_cleanup(struct mlx5_core_dev *dev)

{

}



struct auxiliary_device *mlx5_sd_get_adev(struct mlx5_core_dev *dev,

					  struct auxiliary_device *adev,

					  int idx)

{

	return adev;

}

drivers/net/ethernet/mellanox/mlx5/core/lib/sd.h

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Original line number Diff line number Diff line 
/* SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB */

/* Copyright (c) 2023, NVIDIA CORPORATION & AFFILIATES. All rights reserved. */



#ifndef __MLX5_LIB_SD_H__

#define __MLX5_LIB_SD_H__



#define MLX5_SD_MAX_GROUP_SZ 2



struct mlx5_sd;



struct mlx5_core_dev *mlx5_sd_primary_get_peer(struct mlx5_core_dev *primary, int idx);

int mlx5_sd_ch_ix_get_dev_ix(struct mlx5_core_dev *dev, int ch_ix);

int mlx5_sd_ch_ix_get_vec_ix(struct mlx5_core_dev *dev, int ch_ix);

struct mlx5_core_dev *mlx5_sd_ch_ix_get_dev(struct mlx5_core_dev *primary, int ch_ix);

struct auxiliary_device *mlx5_sd_get_adev(struct mlx5_core_dev *dev,

					  struct auxiliary_device *adev,

					  int idx);



int mlx5_sd_init(struct mlx5_core_dev *dev);

void mlx5_sd_cleanup(struct mlx5_core_dev *dev);



#define mlx5_sd_for_each_dev_from_to(i, primary, ix_from, to, pos)	\

	for (i = ix_from;							\

	     (pos = mlx5_sd_primary_get_peer(primary, i)) && pos != (to); i++)



#define mlx5_sd_for_each_dev(i, primary, pos)				\

	mlx5_sd_for_each_dev_from_to(i, primary, 0, NULL, pos)



#define mlx5_sd_for_each_dev_to(i, primary, to, pos)			\

	mlx5_sd_for_each_dev_from_to(i, primary, 0, to, pos)



#define mlx5_sd_for_each_secondary(i, primary, pos)			\

	mlx5_sd_for_each_dev_from_to(i, primary, 1, NULL, pos)



#define mlx5_sd_for_each_secondary_to(i, primary, to, pos)		\

	mlx5_sd_for_each_dev_from_to(i, primary, 1, to, pos)



#endif /* __MLX5_LIB_SD_H__ */