Commit cbfdefc4 authored by Moshe Shemesh's avatar Moshe Shemesh Committed by Jakub Kicinski
Browse files

net/mlx5: fs, add HWS root namespace functions 



Add flow steering commands structure for HW steering. Implement create,
destroy and set peer HW steering root namespace functions.

Signed-off-by: default avatarMoshe Shemesh <moshe@nvidia.com>
Reviewed-by: default avatarYevgeny Kliteynik <kliteyn@nvidia.com>
Reviewed-by: default avatarMark Bloch <mbloch@nvidia.com>
Signed-off-by: default avatarTariq Toukan <tariqt@nvidia.com>
Link: https://patch.msgid.link/20250109160546.1733647-2-tariqt@nvidia.com


Signed-off-by: default avatarJakub Kicinski <kuba@kernel.org>
parent afc66498

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

+2 −2
Original line number Diff line number Diff line
@@ -151,8 +151,8 @@ mlx5_core-$(CONFIG_MLX5_HW_STEERING) += steering/hws/cmd.o \ 
					steering/hws/bwc.o \

					steering/hws/debug.o \

					steering/hws/vport.o \

					steering/hws/bwc_complex.o



					steering/hws/bwc_complex.o \

					steering/hws/fs_hws.o



#

# SF device

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

+7 −2
Original line number Diff line number Diff line
@@ -38,6 +38,7 @@ 
#include <linux/rhashtable.h>

#include <linux/llist.h>

#include <steering/sws/fs_dr.h>

#include <steering/hws/fs_hws.h>



#define FDB_TC_MAX_CHAIN 3

#define FDB_FT_CHAIN (FDB_TC_MAX_CHAIN + 1)
@@ -126,7 +127,8 @@ enum fs_fte_status { 


enum mlx5_flow_steering_mode {

	MLX5_FLOW_STEERING_MODE_DMFS,

	MLX5_FLOW_STEERING_MODE_SMFS

	MLX5_FLOW_STEERING_MODE_SMFS,

	MLX5_FLOW_STEERING_MODE_HMFS,

};



enum mlx5_flow_steering_capabilty {
@@ -293,7 +295,10 @@ struct mlx5_flow_group { 
struct mlx5_flow_root_namespace {

	struct mlx5_flow_namespace	ns;

	enum   mlx5_flow_steering_mode	mode;

	union {

		struct mlx5_fs_dr_domain	fs_dr_domain;

		struct mlx5_fs_hws_context	fs_hws_context;

	};

	enum   fs_flow_table_type	table_type;

	struct mlx5_core_dev		*dev;

	struct mlx5_flow_table		*root_ft;

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

0 → 100644
+56 −0
Original line number Diff line number Diff line 
// SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB

/* Copyright (c) 2025 NVIDIA Corporation & Affiliates */



#include <mlx5_core.h>

#include <fs_core.h>

#include <fs_cmd.h>

#include "mlx5hws.h"



#define MLX5HWS_CTX_MAX_NUM_OF_QUEUES 16

#define MLX5HWS_CTX_QUEUE_SIZE 256



static int mlx5_cmd_hws_create_ns(struct mlx5_flow_root_namespace *ns)

{

	struct mlx5hws_context_attr hws_ctx_attr = {};



	hws_ctx_attr.queues = min_t(int, num_online_cpus(),

				    MLX5HWS_CTX_MAX_NUM_OF_QUEUES);

	hws_ctx_attr.queue_size = MLX5HWS_CTX_QUEUE_SIZE;



	ns->fs_hws_context.hws_ctx =

		mlx5hws_context_open(ns->dev, &hws_ctx_attr);

	if (!ns->fs_hws_context.hws_ctx) {

		mlx5_core_err(ns->dev, "Failed to create hws flow namespace\n");

		return -EINVAL;

	}

	return 0;

}



static int mlx5_cmd_hws_destroy_ns(struct mlx5_flow_root_namespace *ns)

{

	return mlx5hws_context_close(ns->fs_hws_context.hws_ctx);

}



static int mlx5_cmd_hws_set_peer(struct mlx5_flow_root_namespace *ns,

				 struct mlx5_flow_root_namespace *peer_ns,

				 u16 peer_vhca_id)

{

	struct mlx5hws_context *peer_ctx = NULL;



	if (peer_ns)

		peer_ctx = peer_ns->fs_hws_context.hws_ctx;

	mlx5hws_context_set_peer(ns->fs_hws_context.hws_ctx, peer_ctx,

				 peer_vhca_id);

	return 0;

}



static const struct mlx5_flow_cmds mlx5_flow_cmds_hws = {

	.create_ns = mlx5_cmd_hws_create_ns,

	.destroy_ns = mlx5_cmd_hws_destroy_ns,

	.set_peer = mlx5_cmd_hws_set_peer,

};



const struct mlx5_flow_cmds *mlx5_fs_cmd_get_hws_cmds(void)

{

	return &mlx5_flow_cmds_hws;

}

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

0 → 100644
+25 −0
Original line number Diff line number Diff line 
/* SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB */

/* Copyright (c) 2025 NVIDIA Corporation & Affiliates */



#ifndef _MLX5_FS_HWS_

#define _MLX5_FS_HWS_



#include "mlx5hws.h"



struct mlx5_fs_hws_context {

	struct mlx5hws_context	*hws_ctx;

};



#ifdef CONFIG_MLX5_HW_STEERING



const struct mlx5_flow_cmds *mlx5_fs_cmd_get_hws_cmds(void);



#else



static inline const struct mlx5_flow_cmds *mlx5_fs_cmd_get_hws_cmds(void)

{

	return NULL;

}



#endif /* CONFIG_MLX5_HWS_STEERING */

#endif