Commit 0f3ecf5c authored by Moshe Shemesh's avatar Moshe Shemesh Committed by Jakub Kicinski
Browse files

net/mlx5: fs, add HWS flow table API functions 



Add API functions to create, modify and destroy HW Steering flow tables.
Modify table enables change, connect or disconnect default miss table.
Add update root flow table API function.

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/20250109160546.1733647-3-tariqt@nvidia.com


Signed-off-by: default avatarJakub Kicinski <kuba@kernel.org>
parent cbfdefc4

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

+4 −1
Original line number Diff line number Diff line
@@ -192,7 +192,10 @@ struct mlx5_flow_handle { 
/* Type of children is mlx5_flow_group */

struct mlx5_flow_table {

	struct fs_node			node;

	union {

		struct mlx5_fs_dr_table		fs_dr_table;

		struct mlx5_fs_hws_table	fs_hws_table;

	};

	u32				id;

	u16				vport;

	unsigned int			max_fte;

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

+113 −0
Original line number Diff line number Diff line
@@ -44,7 +44,120 @@ static int mlx5_cmd_hws_set_peer(struct mlx5_flow_root_namespace *ns, 
	return 0;

}



static int mlx5_fs_set_ft_default_miss(struct mlx5_flow_root_namespace *ns,

				       struct mlx5_flow_table *ft,

				       struct mlx5_flow_table *next_ft)

{

	struct mlx5hws_table *next_tbl;

	int err;



	if (!ns->fs_hws_context.hws_ctx)

		return -EINVAL;



	/* if no change required, return */

	if (!next_ft && !ft->fs_hws_table.miss_ft_set)

		return 0;



	next_tbl = next_ft ? next_ft->fs_hws_table.hws_table : NULL;

	err = mlx5hws_table_set_default_miss(ft->fs_hws_table.hws_table, next_tbl);

	if (err) {

		mlx5_core_err(ns->dev, "Failed setting FT default miss (%d)\n", err);

		return err;

	}

	ft->fs_hws_table.miss_ft_set = !!next_tbl;

	return 0;

}



static int mlx5_cmd_hws_create_flow_table(struct mlx5_flow_root_namespace *ns,

					  struct mlx5_flow_table *ft,

					  struct mlx5_flow_table_attr *ft_attr,

					  struct mlx5_flow_table *next_ft)

{

	struct mlx5hws_context *ctx = ns->fs_hws_context.hws_ctx;

	struct mlx5hws_table_attr tbl_attr = {};

	struct mlx5hws_table *tbl;

	int err;



	if (mlx5_fs_cmd_is_fw_term_table(ft))

		return mlx5_fs_cmd_get_fw_cmds()->create_flow_table(ns, ft, ft_attr,

								    next_ft);



	if (ns->table_type != FS_FT_FDB) {

		mlx5_core_err(ns->dev, "Table type %d not supported for HWS\n",

			      ns->table_type);

		return -EOPNOTSUPP;

	}



	tbl_attr.type = MLX5HWS_TABLE_TYPE_FDB;

	tbl_attr.level = ft_attr->level;

	tbl = mlx5hws_table_create(ctx, &tbl_attr);

	if (!tbl) {

		mlx5_core_err(ns->dev, "Failed creating hws flow_table\n");

		return -EINVAL;

	}



	ft->fs_hws_table.hws_table = tbl;

	ft->id = mlx5hws_table_get_id(tbl);



	if (next_ft) {

		err = mlx5_fs_set_ft_default_miss(ns, ft, next_ft);

		if (err)

			goto destroy_table;

	}



	ft->max_fte = INT_MAX;



	return 0;



destroy_table:

	mlx5hws_table_destroy(tbl);

	ft->fs_hws_table.hws_table = NULL;

	return err;

}



static int mlx5_cmd_hws_destroy_flow_table(struct mlx5_flow_root_namespace *ns,

					   struct mlx5_flow_table *ft)

{

	int err;



	if (mlx5_fs_cmd_is_fw_term_table(ft))

		return mlx5_fs_cmd_get_fw_cmds()->destroy_flow_table(ns, ft);



	err = mlx5_fs_set_ft_default_miss(ns, ft, NULL);

	if (err)

		mlx5_core_err(ns->dev, "Failed to disconnect next table (%d)\n", err);



	err = mlx5hws_table_destroy(ft->fs_hws_table.hws_table);

	if (err)

		mlx5_core_err(ns->dev, "Failed to destroy flow_table (%d)\n", err);



	return err;

}



static int mlx5_cmd_hws_modify_flow_table(struct mlx5_flow_root_namespace *ns,

					  struct mlx5_flow_table *ft,

					  struct mlx5_flow_table *next_ft)

{

	if (mlx5_fs_cmd_is_fw_term_table(ft))

		return mlx5_fs_cmd_get_fw_cmds()->modify_flow_table(ns, ft, next_ft);



	return mlx5_fs_set_ft_default_miss(ns, ft, next_ft);

}



static int mlx5_cmd_hws_update_root_ft(struct mlx5_flow_root_namespace *ns,

				       struct mlx5_flow_table *ft,

				       u32 underlay_qpn,

				       bool disconnect)

{

	return mlx5_fs_cmd_get_fw_cmds()->update_root_ft(ns, ft, underlay_qpn,

							 disconnect);

}



static const struct mlx5_flow_cmds mlx5_flow_cmds_hws = {

	.create_flow_table = mlx5_cmd_hws_create_flow_table,

	.destroy_flow_table = mlx5_cmd_hws_destroy_flow_table,

	.modify_flow_table = mlx5_cmd_hws_modify_flow_table,

	.update_root_ft = mlx5_cmd_hws_update_root_ft,

	.create_ns = mlx5_cmd_hws_create_ns,

	.destroy_ns = mlx5_cmd_hws_destroy_ns,

	.set_peer = mlx5_cmd_hws_set_peer,

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

+5 −0
Original line number Diff line number Diff line
@@ -10,6 +10,11 @@ struct mlx5_fs_hws_context { 
	struct mlx5hws_context	*hws_ctx;

};



struct mlx5_fs_hws_table {

	struct mlx5hws_table *hws_table;

	bool miss_ft_set;

};



#ifdef CONFIG_MLX5_HW_STEERING



const struct mlx5_flow_cmds *mlx5_fs_cmd_get_hws_cmds(void);