LXR linux/include/linux/mlx5/eswitch.h

   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
 139