mod_hdr.h

 1/* SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB */
 2/* Copyright (c) 2020 Mellanox Technologies */
 3
 4#ifndef __MLX5E_EN_MOD_HDR_H__
 5#define __MLX5E_EN_MOD_HDR_H__
 6
 7#include <linux/hashtable.h>
 8#include <linux/mlx5/fs.h>
 9
10#define MLX5_MH_ACT_SZ MLX5_UN_SZ_BYTES(set_add_copy_action_in_auto)
11
12struct mlx5e_mod_hdr_handle;
13
14struct mlx5e_tc_mod_hdr_acts {
15	int num_actions;
16	int max_actions;
17	bool is_static;
18	void *actions;
19};
20
21#define DECLARE_MOD_HDR_ACTS_ACTIONS(name, len) \
22	u8 name[len][MLX5_MH_ACT_SZ] = {}
23
24#define DECLARE_MOD_HDR_ACTS(name, acts_arr) \
25	struct mlx5e_tc_mod_hdr_acts name = { \
26		.max_actions = ARRAY_SIZE(acts_arr), \
27		.is_static = true, \
28		.actions = acts_arr, \
29	}
30
31char *mlx5e_mod_hdr_alloc(struct mlx5_core_dev *mdev, int namespace,
32			  struct mlx5e_tc_mod_hdr_acts *mod_hdr_acts);
33void mlx5e_mod_hdr_dealloc(struct mlx5e_tc_mod_hdr_acts *mod_hdr_acts);
34char *mlx5e_mod_hdr_get_item(struct mlx5e_tc_mod_hdr_acts *mod_hdr_acts, int pos);
35
36struct mlx5e_mod_hdr_handle *
37mlx5e_mod_hdr_attach(struct mlx5_core_dev *mdev,
38		     struct mod_hdr_tbl *tbl,
39		     enum mlx5_flow_namespace_type namespace,
40		     struct mlx5e_tc_mod_hdr_acts *mod_hdr_acts);
41void mlx5e_mod_hdr_detach(struct mlx5_core_dev *mdev,
42			  struct mod_hdr_tbl *tbl,
43			  struct mlx5e_mod_hdr_handle *mh);
44struct mlx5_modify_hdr *mlx5e_mod_hdr_get(struct mlx5e_mod_hdr_handle *mh);
45
46void mlx5e_mod_hdr_tbl_init(struct mod_hdr_tbl *tbl);
47void mlx5e_mod_hdr_tbl_destroy(struct mod_hdr_tbl *tbl);
48
49static inline int mlx5e_mod_hdr_max_actions(struct mlx5_core_dev *mdev, int namespace)
50{
51	if (namespace == MLX5_FLOW_NAMESPACE_FDB) /* FDB offloading */
52		return MLX5_CAP_ESW_FLOWTABLE_FDB(mdev, max_modify_header_actions);
53	else /* namespace is MLX5_FLOW_NAMESPACE_KERNEL - NIC offloading */
54		return MLX5_CAP_FLOWTABLE_NIC_RX(mdev, max_modify_header_actions);
55}
56
57#endif /* __MLX5E_EN_MOD_HDR_H__ */