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_VHCA_ID_BITS(8) | ESW_VPORT BITS(8) | ESW_CHAIN_TAG(16) >
 78 *
 79 * Highest 8 bits of the reg c0 is the vhca_id, next 8 bits is vport_num,
 80 * the rest (lowest 16 bits) is left for tc chain tag restoration.
 81 * VHCA_ID + VPORT comprise the SOURCE_PORT matching.
 82 */
 83#define ESW_VHCA_ID_BITS 8
 84#define ESW_VPORT_BITS 8
 85#define ESW_SOURCE_PORT_METADATA_BITS (ESW_VHCA_ID_BITS + ESW_VPORT_BITS)
 86#define ESW_SOURCE_PORT_METADATA_OFFSET (32 - ESW_SOURCE_PORT_METADATA_BITS)
 87#define ESW_CHAIN_TAG_METADATA_BITS (32 - ESW_SOURCE_PORT_METADATA_BITS)
 88#define ESW_CHAIN_TAG_METADATA_MASK GENMASK(ESW_CHAIN_TAG_METADATA_BITS - 1,\
 89					    0)
 90
 91static inline u32 mlx5_eswitch_get_vport_metadata_mask(void)
 92{
 93	return GENMASK(31, 32 - ESW_SOURCE_PORT_METADATA_BITS);
 94}
 95
 96u32 mlx5_eswitch_get_vport_metadata_for_match(struct mlx5_eswitch *esw,
 97					      u16 vport_num);
 98u8 mlx5_eswitch_mode(struct mlx5_eswitch *esw);
 99#else  /* CONFIG_MLX5_ESWITCH */
100
101static inline u8 mlx5_eswitch_mode(struct mlx5_eswitch *esw)
102{
103	return MLX5_ESWITCH_NONE;
104}
105
106static inline enum devlink_eswitch_encap_mode
107mlx5_eswitch_get_encap_mode(const struct mlx5_core_dev *dev)
108{
109	return DEVLINK_ESWITCH_ENCAP_MODE_NONE;
110}
111
112static inline bool
113mlx5_eswitch_reg_c1_loopback_enabled(const struct mlx5_eswitch *esw)
114{
115	return false;
116};
117
118static inline bool
119mlx5_eswitch_vport_match_metadata_enabled(const struct mlx5_eswitch *esw)
120{
121	return false;
122};
123
124static inline u32
125mlx5_eswitch_get_vport_metadata_for_match(struct mlx5_eswitch *esw,
126					  int vport_num)
127{
128	return 0;
129};
130
131static inline u32
132mlx5_eswitch_get_vport_metadata_mask(void)
133{
134	return 0;
135}
136#endif /* CONFIG_MLX5_ESWITCH */
137
138#endif