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 14 enum { 15 MLX5_ESWITCH_NONE, 16 MLX5_ESWITCH_LEGACY, 17 MLX5_ESWITCH_OFFLOADS 18 }; 19 20 enum { 21 REP_ETH, 22 REP_IB, 23 NUM_REP_TYPES, 24 }; 25 26 enum { 27 REP_UNREGISTERED, 28 REP_REGISTERED, 29 REP_LOADED, 30 }; 31 32 struct mlx5_eswitch_rep; 33 struct 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 39 struct mlx5_eswitch_rep_data { 40 void *priv; 41 atomic_t state; 42 }; 43 44 struct 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 53 void mlx5_eswitch_register_vport_reps(struct mlx5_eswitch *esw, 54 const struct mlx5_eswitch_rep_ops *ops, 55 u8 rep_type); 56 void mlx5_eswitch_unregister_vport_reps(struct mlx5_eswitch *esw, u8 rep_type); 57 void *mlx5_eswitch_get_proto_dev(struct mlx5_eswitch *esw, 58 u16 vport_num, 59 u8 rep_type); 60 struct mlx5_eswitch_rep *mlx5_eswitch_vport_rep(struct mlx5_eswitch *esw, 61 u16 vport_num); 62 void *mlx5_eswitch_uplink_get_proto_dev(struct mlx5_eswitch *esw, u8 rep_type); 63 struct mlx5_flow_handle * 64 mlx5_eswitch_add_send_to_vport_rule(struct mlx5_eswitch *esw, 65 u16 vport_num, u32 sqn); 66 67 u16 mlx5_eswitch_get_total_vports(const struct mlx5_core_dev *dev); 68 69 #ifdef CONFIG_MLX5_ESWITCH 70 enum devlink_eswitch_encap_mode 71 mlx5_eswitch_get_encap_mode(const struct mlx5_core_dev *dev); 72 73 bool mlx5_eswitch_reg_c1_loopback_enabled(const struct mlx5_eswitch *esw); 74 bool 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 91 static inline u32 mlx5_eswitch_get_vport_metadata_mask(void) 92 { 93 return GENMASK(31, 32 - ESW_SOURCE_PORT_METADATA_BITS); 94 } 95 96 u32 mlx5_eswitch_get_vport_metadata_for_match(struct mlx5_eswitch *esw, 97 u16 vport_num); 98 u8 mlx5_eswitch_mode(struct mlx5_eswitch *esw); 99 #else /* CONFIG_MLX5_ESWITCH */ 100 101 static inline u8 mlx5_eswitch_mode(struct mlx5_eswitch *esw) 102 { 103 return MLX5_ESWITCH_NONE; 104 } 105 106 static inline enum devlink_eswitch_encap_mode 107 mlx5_eswitch_get_encap_mode(const struct mlx5_core_dev *dev) 108 { 109 return DEVLINK_ESWITCH_ENCAP_MODE_NONE; 110 } 111 112 static inline bool 113 mlx5_eswitch_reg_c1_loopback_enabled(const struct mlx5_eswitch *esw) 114 { 115 return false; 116 }; 117 118 static inline bool 119 mlx5_eswitch_vport_match_metadata_enabled(const struct mlx5_eswitch *esw) 120 { 121 return false; 122 }; 123 124 static inline u32 125 mlx5_eswitch_get_vport_metadata_for_match(struct mlx5_eswitch *esw, 126 int vport_num) 127 { 128 return 0; 129 }; 130 131 static inline u32 132 mlx5_eswitch_get_vport_metadata_mask(void) 133 { 134 return 0; 135 } 136 #endif /* CONFIG_MLX5_ESWITCH */ 137 138 #endif 139