tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1/* SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause) */
2/*
3 * Copyright (c) 2018 Mellanox Technologies. All rights reserved.
4 */
5
6#ifndef _MLX5_ESWITCH_
7#define _MLX5_ESWITCH_
8
9#include <linux/mlx5/driver.h>
10#include <net/devlink.h>
11
12#define MLX5_ESWITCH_MANAGER(mdev) MLX5_CAP_GEN(mdev, eswitch_manager)
13
14enum {
15 MLX5_ESWITCH_NONE,
16 MLX5_ESWITCH_LEGACY,
17 MLX5_ESWITCH_OFFLOADS
18};
19
20enum {
21 REP_ETH,
22 REP_IB,
23 NUM_REP_TYPES,
24};
25
26enum {
27 REP_UNREGISTERED,
28 REP_REGISTERED,
29 REP_LOADED,
30};
31
32struct mlx5_eswitch_rep;
33struct mlx5_eswitch_rep_ops {
34 int (*load)(struct mlx5_core_dev *dev, struct mlx5_eswitch_rep *rep);
35 void (*unload)(struct mlx5_eswitch_rep *rep);
36 void *(*get_proto_dev)(struct mlx5_eswitch_rep *rep);
37};
38
39struct mlx5_eswitch_rep_data {
40 void *priv;
41 atomic_t state;
42};
43
44struct mlx5_eswitch_rep {
45 struct mlx5_eswitch_rep_data rep_data[NUM_REP_TYPES];
46 u16 vport;
47 u16 vlan;
48 /* Only IB rep is using vport_index */
49 u16 vport_index;
50 u32 vlan_refcount;
51};
52
53void mlx5_eswitch_register_vport_reps(struct mlx5_eswitch *esw,
54 const struct mlx5_eswitch_rep_ops *ops,
55 u8 rep_type);
56void mlx5_eswitch_unregister_vport_reps(struct mlx5_eswitch *esw, u8 rep_type);
57void *mlx5_eswitch_get_proto_dev(struct mlx5_eswitch *esw,
58 u16 vport_num,
59 u8 rep_type);
60struct mlx5_eswitch_rep *mlx5_eswitch_vport_rep(struct mlx5_eswitch *esw,
61 u16 vport_num);
62void *mlx5_eswitch_uplink_get_proto_dev(struct mlx5_eswitch *esw, u8 rep_type);
63struct mlx5_flow_handle *
64mlx5_eswitch_add_send_to_vport_rule(struct mlx5_eswitch *esw,
65 u16 vport_num, u32 sqn);
66
67u16 mlx5_eswitch_get_total_vports(const struct mlx5_core_dev *dev);
68
69#ifdef CONFIG_MLX5_ESWITCH
70enum devlink_eswitch_encap_mode
71mlx5_eswitch_get_encap_mode(const struct mlx5_core_dev *dev);
72
73bool mlx5_eswitch_reg_c1_loopback_enabled(const struct mlx5_eswitch *esw);
74bool mlx5_eswitch_vport_match_metadata_enabled(const struct mlx5_eswitch *esw);
75
76/* Reg C0 usage:
77 * Reg C0 = < ESW_PFNUM_BITS(4) | ESW_VPORT BITS(12) | ESW_CHAIN_TAG(16) >
78 *
79 * Highest 4 bits of the reg c0 is the PF_NUM (range 0-15), 12 bits of
80 * unique non-zero vport id (range 1-4095). The rest (lowest 16 bits) is left
81 * for tc chain tag restoration.
82 * PFNUM + VPORT comprise the SOURCE_PORT matching.
83 */
84#define ESW_VPORT_BITS 12
85#define ESW_PFNUM_BITS 4
86#define ESW_SOURCE_PORT_METADATA_BITS (ESW_PFNUM_BITS + ESW_VPORT_BITS)
87#define ESW_SOURCE_PORT_METADATA_OFFSET (32 - ESW_SOURCE_PORT_METADATA_BITS)
88#define ESW_CHAIN_TAG_METADATA_BITS (32 - ESW_SOURCE_PORT_METADATA_BITS)
89#define ESW_CHAIN_TAG_METADATA_MASK GENMASK(ESW_CHAIN_TAG_METADATA_BITS - 1,\
90 0)
91
92static inline u32 mlx5_eswitch_get_vport_metadata_mask(void)
93{
94 return GENMASK(31, 32 - ESW_SOURCE_PORT_METADATA_BITS);
95}
96
97u32 mlx5_eswitch_get_vport_metadata_for_match(struct mlx5_eswitch *esw,
98 u16 vport_num);
99u8 mlx5_eswitch_mode(struct mlx5_core_dev *dev);
100#else /* CONFIG_MLX5_ESWITCH */
101
102static inline u8 mlx5_eswitch_mode(struct mlx5_core_dev *dev)
103{
104 return MLX5_ESWITCH_NONE;
105}
106
107static inline enum devlink_eswitch_encap_mode
108mlx5_eswitch_get_encap_mode(const struct mlx5_core_dev *dev)
109{
110 return DEVLINK_ESWITCH_ENCAP_MODE_NONE;
111}
112
113static inline bool
114mlx5_eswitch_reg_c1_loopback_enabled(const struct mlx5_eswitch *esw)
115{
116 return false;
117};
118
119static inline bool
120mlx5_eswitch_vport_match_metadata_enabled(const struct mlx5_eswitch *esw)
121{
122 return false;
123};
124
125static inline u32
126mlx5_eswitch_get_vport_metadata_for_match(struct mlx5_eswitch *esw,
127 int vport_num)
128{
129 return 0;
130};
131
132static inline u32
133mlx5_eswitch_get_vport_metadata_mask(void)
134{
135 return 0;
136}
137#endif /* CONFIG_MLX5_ESWITCH */
138
139static inline bool is_mdev_switchdev_mode(struct mlx5_core_dev *dev)
140{
141 return mlx5_eswitch_mode(dev) == MLX5_ESWITCH_OFFLOADS;
142}
143#endif