Commit 6c5e6825 authored by Yevgeny Kliteynik's avatar Yevgeny Kliteynik Committed by Saeed Mahameed
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net/mlx5: HWS, added vport handling 



Vport is a virtual eswitch port that is associated with its virtual
function (VF), physical function (PF) or sub-function (SF).
This patch adds handling of vports in HWS.

Reviewed-by: default avatarHamdan Agbariya <hamdani@nvidia.com>
Signed-off-by: default avatarYevgeny Kliteynik <kliteyn@nvidia.com>
Signed-off-by: default avatarSaeed Mahameed <saeedm@nvidia.com>
parent aefc15a0

drivers/net/ethernet/mellanox/mlx5/core/steering/hws/mlx5hws_vport.c

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// SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB

/* Copyright (c) 2024 NVIDIA Corporation & Affiliates */



#include "mlx5hws_internal.h"



int mlx5hws_vport_init_vports(struct mlx5hws_context *ctx)

{

	int ret;



	if (!ctx->caps->eswitch_manager)

		return 0;



	xa_init(&ctx->vports.vport_gvmi_xa);



	/* Set gvmi for eswitch manager and uplink vports only. Rest of the vports

	 * (vport 0 of other function, VFs and SFs) will be queried dynamically.

	 */



	ret = mlx5hws_cmd_query_gvmi(ctx->mdev, false, 0, &ctx->vports.esw_manager_gvmi);

	if (ret)

		return ret;



	ctx->vports.uplink_gvmi = 0;

	return 0;

}



void mlx5hws_vport_uninit_vports(struct mlx5hws_context *ctx)

{

	if (ctx->caps->eswitch_manager)

		xa_destroy(&ctx->vports.vport_gvmi_xa);

}



static int hws_vport_add_gvmi(struct mlx5hws_context *ctx, u16 vport)

{

	u16 vport_gvmi;

	int ret;



	ret = mlx5hws_cmd_query_gvmi(ctx->mdev, true, vport, &vport_gvmi);

	if (ret)

		return -EINVAL;



	ret = xa_insert(&ctx->vports.vport_gvmi_xa, vport,

			xa_mk_value(vport_gvmi), GFP_KERNEL);

	if (ret)

		mlx5hws_dbg(ctx, "Couldn't insert new vport gvmi into xarray (%d)\n", ret);



	return ret;

}



static bool hws_vport_is_esw_mgr_vport(struct mlx5hws_context *ctx, u16 vport)

{

	return ctx->caps->is_ecpf ? vport == MLX5_VPORT_ECPF :

				    vport == MLX5_VPORT_PF;

}



int mlx5hws_vport_get_gvmi(struct mlx5hws_context *ctx, u16 vport, u16 *vport_gvmi)

{

	void *entry;

	int ret;



	if (!ctx->caps->eswitch_manager)

		return -EINVAL;



	if (hws_vport_is_esw_mgr_vport(ctx, vport)) {

		*vport_gvmi = ctx->vports.esw_manager_gvmi;

		return 0;

	}



	if (vport == MLX5_VPORT_UPLINK) {

		*vport_gvmi = ctx->vports.uplink_gvmi;

		return 0;

	}



load_entry:

	entry = xa_load(&ctx->vports.vport_gvmi_xa, vport);



	if (!xa_is_value(entry)) {

		ret = hws_vport_add_gvmi(ctx, vport);

		if (ret && ret != -EBUSY)

			return ret;

		goto load_entry;

	}



	*vport_gvmi = (u16)xa_to_value(entry);

	return 0;

}

drivers/net/ethernet/mellanox/mlx5/core/steering/hws/mlx5hws_vport.h

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/* SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB */

/* Copyright (c) 2024 NVIDIA Corporation & Affiliates */



#ifndef MLX5HWS_VPORT_H_

#define MLX5HWS_VPORT_H_



int mlx5hws_vport_init_vports(struct mlx5hws_context *ctx);



void mlx5hws_vport_uninit_vports(struct mlx5hws_context *ctx);



int mlx5hws_vport_get_gvmi(struct mlx5hws_context *ctx, u16 vport, u16 *vport_gvmi);



#endif /* MLX5HWS_VPORT_H_ */